Commit | Line | Data |
---|---|---|
d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, |
3 | 1996, 1998, 1999, 2001, 2002, 2003, 2004, | |
8cabe764 | 4 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
d0d6b7c5 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
d0d6b7c5 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d0d6b7c5 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
68c45bf0 PE |
23 | #include <signal.h> |
24 | ||
6720a7fb JB |
25 | /* This file is split into two parts by the following preprocessor |
26 | conditional. The 'then' clause contains all of the support for | |
27 | asynchronous subprocesses. The 'else' clause contains stub | |
28 | versions of some of the asynchronous subprocess routines that are | |
29 | often called elsewhere in Emacs, so we don't have to #ifdef the | |
30 | sections that call them. */ | |
31 | ||
32 | \f | |
d0d6b7c5 | 33 | #ifdef subprocesses |
d0d6b7c5 JB |
34 | |
35 | #include <stdio.h> | |
934e2a68 EZ |
36 | #include <stdlib.h> |
37 | #include <ctype.h> | |
d0d6b7c5 JB |
38 | #include <errno.h> |
39 | #include <setjmp.h> | |
40 | #include <sys/types.h> /* some typedefs are used in sys/file.h */ | |
41 | #include <sys/file.h> | |
42 | #include <sys/stat.h> | |
2026418c YM |
43 | #ifdef HAVE_INTTYPES_H |
44 | #include <inttypes.h> | |
45 | #endif | |
934e2a68 EZ |
46 | |
47 | #ifdef HAVE_PWD_H | |
48 | #include <pwd.h> | |
49 | #include <grp.h> | |
50 | #endif | |
51 | ||
93b4f699 RS |
52 | #ifdef HAVE_UNISTD_H |
53 | #include <unistd.h> | |
54 | #endif | |
e98d950b | 55 | #include <fcntl.h> |
e98d950b | 56 | |
d0d6b7c5 JB |
57 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
58 | #include <sys/socket.h> | |
59 | #include <netdb.h> | |
60 | #include <netinet/in.h> | |
61 | #include <arpa/inet.h> | |
e690ca94 KS |
62 | |
63 | /* Are local (unix) sockets supported? */ | |
4624371d | 64 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
65 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
66 | #define AF_LOCAL AF_UNIX | |
67 | #endif | |
68 | #ifdef AF_LOCAL | |
69 | #define HAVE_LOCAL_SOCKETS | |
70 | #include <sys/un.h> | |
71 | #endif | |
72 | #endif | |
d0d6b7c5 JB |
73 | #endif /* HAVE_SOCKETS */ |
74 | ||
e39a993c | 75 | #if defined(BSD_SYSTEM) |
d0d6b7c5 | 76 | #include <sys/ioctl.h> |
0ad77c54 | 77 | #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5) |
d0d6b7c5 JB |
78 | #include <fcntl.h> |
79 | #endif /* HAVE_PTYS and no O_NDELAY */ | |
e39a993c | 80 | #endif /* BSD_SYSTEM */ |
d0d6b7c5 JB |
81 | |
82 | #ifdef NEED_BSDTTY | |
83 | #include <bsdtty.h> | |
84 | #endif | |
85 | ||
6b61353c KH |
86 | /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */ |
87 | #ifdef HAVE_SOCKETS | |
88 | #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H) | |
89 | /* sys/ioctl.h may have been included already */ | |
90 | #ifndef SIOCGIFADDR | |
91 | #include <sys/ioctl.h> | |
92 | #endif | |
93 | #include <net/if.h> | |
94 | #endif | |
95 | #endif | |
96 | ||
e62cab61 DL |
97 | #ifdef HAVE_SYS_WAIT |
98 | #include <sys/wait.h> | |
99 | #endif | |
d0d6b7c5 | 100 | |
08116b48 CY |
101 | #ifdef HAVE_RES_INIT |
102 | #include <netinet/in.h> | |
103 | #include <arpa/nameser.h> | |
104 | #include <resolv.h> | |
105 | #endif | |
106 | ||
fa8459a3 | 107 | #include "lisp.h" |
d0d6b7c5 | 108 | #include "systime.h" |
36ebaafa | 109 | #include "systty.h" |
d0d6b7c5 | 110 | |
d0d6b7c5 JB |
111 | #include "window.h" |
112 | #include "buffer.h" | |
5bbf78c1 | 113 | #include "character.h" |
0fa1789e | 114 | #include "coding.h" |
d0d6b7c5 | 115 | #include "process.h" |
428a555e | 116 | #include "frame.h" |
d0d6b7c5 JB |
117 | #include "termhooks.h" |
118 | #include "termopts.h" | |
119 | #include "commands.h" | |
3ec68006 | 120 | #include "keyboard.h" |
ececcbec | 121 | #include "blockinput.h" |
dfcf069d | 122 | #include "dispextern.h" |
e0016554 | 123 | #include "composite.h" |
30904ab7 | 124 | #include "atimer.h" |
d0d6b7c5 | 125 | |
dd2281ae | 126 | Lisp_Object Qprocessp; |
324e68ba | 127 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 128 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
e1652a86 | 129 | Lisp_Object Qlocal, Qipv4, Qdatagram; |
d888760c | 130 | Lisp_Object Qreal, Qnetwork, Qserial; |
e1652a86 KS |
131 | #ifdef AF_INET6 |
132 | Lisp_Object Qipv6; | |
133 | #endif | |
d888760c GM |
134 | Lisp_Object QCport, QCspeed, QCprocess; |
135 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; | |
136 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
9057ff80 | 137 | Lisp_Object QCname, QCbuffer, QChost, QCservice, QCtype; |
e690ca94 | 138 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 139 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 140 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
6545aada | 141 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
142 | /* QCfamily is declared and initialized in xfaces.c, |
143 | QCfilter in keyboard.c. */ | |
144 | extern Lisp_Object QCfamily, QCfilter; | |
145 | ||
d0d6b7c5 JB |
146 | /* Qexit is declared and initialized in eval.c. */ |
147 | ||
e0f712ba AC |
148 | /* QCfamily is defined in xfaces.c. */ |
149 | extern Lisp_Object QCfamily; | |
150 | /* QCfilter is defined in keyboard.c. */ | |
151 | extern Lisp_Object QCfilter; | |
152 | ||
934e2a68 EZ |
153 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
154 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
155 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
156 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem; | |
157 | ||
d0d6b7c5 | 158 | #ifdef HAVE_SOCKETS |
d888760c GM |
159 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
160 | #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork)) | |
161 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
162 | #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial)) | |
d0d6b7c5 JB |
163 | #else |
164 | #define NETCONN_P(p) 0 | |
e690ca94 | 165 | #define NETCONN1_P(p) 0 |
d888760c GM |
166 | #define SERIALCONN_P(p) 0 |
167 | #define SERIALCONN1_P(p) 0 | |
d0d6b7c5 JB |
168 | #endif /* HAVE_SOCKETS */ |
169 | ||
170 | /* Define first descriptor number available for subprocesses. */ | |
d0d6b7c5 | 171 | #define FIRST_PROC_DESC 3 |
d0d6b7c5 JB |
172 | |
173 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
174 | testing SIGCHLD. */ | |
175 | ||
176 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
177 | #define SIGCHLD SIGCLD | |
178 | #endif /* SIGCLD */ | |
179 | ||
180 | #include "syssignal.h" | |
181 | ||
889255b4 | 182 | #include "syswait.h" |
d0d6b7c5 | 183 | |
d9e7c622 | 184 | extern char *get_operating_system_release (); |
41d03b9a | 185 | |
d888760c GM |
186 | /* Serial processes require termios or Windows. */ |
187 | #if defined (HAVE_TERMIOS) || defined (WINDOWSNT) | |
188 | #define HAVE_SERIAL | |
189 | #endif | |
190 | ||
191 | #ifdef HAVE_SERIAL | |
192 | /* From sysdep.c or w32.c */ | |
193 | extern int serial_open (char *port); | |
194 | extern void serial_configure (struct Lisp_Process *p, Lisp_Object contact); | |
195 | #endif | |
196 | ||
3ec68006 | 197 | #ifndef USE_CRT_DLL |
b062d1fe | 198 | extern int errno; |
3ec68006 | 199 | #endif |
d0d6b7c5 | 200 | |
5f0929a7 RS |
201 | #ifndef HAVE_H_ERRNO |
202 | extern int h_errno; | |
203 | #endif | |
204 | ||
d0d6b7c5 JB |
205 | /* t means use pty, nil means use a pipe, |
206 | maybe other values to come. */ | |
dd2281ae | 207 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 | 208 | |
17d02632 KH |
209 | /* These next two vars are non-static since sysdep.c uses them in the |
210 | emulation of `select'. */ | |
d0d6b7c5 | 211 | /* Number of events of change of status of a process. */ |
17d02632 | 212 | int process_tick; |
d0d6b7c5 | 213 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 214 | int update_tick; |
d0d6b7c5 | 215 | |
dd2a17ab KS |
216 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
217 | ||
218 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
219 | #undef NON_BLOCKING_CONNECT | |
220 | #else | |
221 | #ifndef NON_BLOCKING_CONNECT | |
222 | #ifdef HAVE_SOCKETS | |
223 | #ifdef HAVE_SELECT | |
224 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
225 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
226 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
227 | #define NON_BLOCKING_CONNECT | |
228 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
229 | #endif /* O_NONBLOCK || O_NDELAY */ | |
230 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
231 | #endif /* HAVE_SELECT */ | |
232 | #endif /* HAVE_SOCKETS */ | |
233 | #endif /* NON_BLOCKING_CONNECT */ | |
234 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
235 | ||
e690ca94 KS |
236 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
237 | this system. We need to read full packets, so we need a | |
238 | "non-destructive" select. So we require either native select, | |
239 | or emulation of select using FIONREAD. */ | |
240 | ||
e690ca94 KS |
241 | #ifdef BROKEN_DATAGRAM_SOCKETS |
242 | #undef DATAGRAM_SOCKETS | |
243 | #else | |
244 | #ifndef DATAGRAM_SOCKETS | |
245 | #ifdef HAVE_SOCKETS | |
246 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
247 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
248 | #define DATAGRAM_SOCKETS | |
249 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
250 | #endif /* HAVE_SELECT || FIONREAD */ | |
251 | #endif /* HAVE_SOCKETS */ | |
252 | #endif /* DATAGRAM_SOCKETS */ | |
253 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
254 | ||
6b61353c KH |
255 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
256 | #ifdef EMACS_HAS_USECS | |
257 | #define ADAPTIVE_READ_BUFFERING | |
258 | #endif | |
259 | #endif | |
260 | ||
261 | #ifdef ADAPTIVE_READ_BUFFERING | |
262 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
263 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
264 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
265 | ||
db853b7a KS |
266 | /* Number of processes which have a non-zero read_output_delay, |
267 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
268 | |
269 | static int process_output_delay_count; | |
270 | ||
db853b7a | 271 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
272 | |
273 | static int process_output_skip; | |
274 | ||
275 | /* Non-nil means to delay reading process output to improve buffering. | |
276 | A value of t means that delay is reset after each send, any other | |
db853b7a KS |
277 | non-nil value does not reset the delay. A value of nil disables |
278 | adaptive read buffering completely. */ | |
6b61353c KH |
279 | static Lisp_Object Vprocess_adaptive_read_buffering; |
280 | #else | |
281 | #define process_output_delay_count 0 | |
282 | #endif | |
283 | ||
e690ca94 | 284 | |
5886acf9 | 285 | #include "sysselect.h" |
d0d6b7c5 | 286 | |
ff6daed3 KS |
287 | static int keyboard_bit_set P_ ((SELECT_TYPE *)); |
288 | static void deactivate_process P_ ((Lisp_Object)); | |
289 | static void status_notify P_ ((struct Lisp_Process *)); | |
290 | static int read_process_output P_ ((Lisp_Object, int)); | |
41d03b9a | 291 | |
583dcae4 | 292 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 293 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 294 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
295 | #define POLL_FOR_INPUT |
296 | #endif | |
297 | ||
84af9896 RS |
298 | static Lisp_Object get_process (); |
299 | static void exec_sentinel (); | |
300 | ||
301 | extern EMACS_TIME timer_check (); | |
302 | extern int timers_run; | |
303 | \f | |
a69281ff | 304 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 305 | |
dd2281ae RS |
306 | static SELECT_TYPE input_wait_mask; |
307 | ||
994d9841 | 308 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
309 | |
310 | static SELECT_TYPE non_keyboard_wait_mask; | |
311 | ||
994d9841 | 312 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
313 | |
314 | static SELECT_TYPE non_process_wait_mask; | |
315 | ||
994d9841 NR |
316 | /* Mask for the gpm mouse input descriptor. */ |
317 | ||
318 | static SELECT_TYPE gpm_wait_mask; | |
319 | ||
bad49fc7 | 320 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
321 | /* Mask of bits indicating the descriptors that we wait for connect to |
322 | complete on. Once they complete, they are removed from this mask | |
323 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
324 | ||
325 | static SELECT_TYPE connect_wait_mask; | |
326 | ||
327 | /* Number of bits set in connect_wait_mask. */ | |
328 | static int num_pending_connects; | |
329 | ||
bad49fc7 KS |
330 | #define IF_NON_BLOCKING_CONNECT(s) s |
331 | #else | |
332 | #define IF_NON_BLOCKING_CONNECT(s) | |
333 | #endif | |
334 | ||
7d0e672e RS |
335 | /* The largest descriptor currently in use for a process object. */ |
336 | static int max_process_desc; | |
337 | ||
a69281ff RS |
338 | /* The largest descriptor currently in use for keyboard input. */ |
339 | static int max_keyboard_desc; | |
d0d6b7c5 | 340 | |
994d9841 NR |
341 | /* The largest descriptor currently in use for gpm mouse input. */ |
342 | static int max_gpm_desc; | |
343 | ||
dd2281ae RS |
344 | /* Nonzero means delete a process right away if it exits. */ |
345 | static int delete_exited_processes; | |
d0d6b7c5 JB |
346 | |
347 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 348 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
349 | |
350 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 351 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
352 | |
353 | /* Buffered-ahead input char from process, indexed by channel. | |
354 | -1 means empty (no char is buffered). | |
355 | Used on sys V where the only way to tell if there is any | |
356 | output from the process is to read at least one char. | |
357 | Always -1 on systems that support FIONREAD. */ | |
358 | ||
e98d950b RS |
359 | /* Don't make static; need to access externally. */ |
360 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 361 | |
0fa1789e | 362 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
363 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
364 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 365 | |
e690ca94 KS |
366 | #ifdef DATAGRAM_SOCKETS |
367 | /* Table of `partner address' for datagram sockets. */ | |
368 | struct sockaddr_and_len { | |
369 | struct sockaddr *sa; | |
370 | int len; | |
371 | } datagram_address[MAXDESC]; | |
372 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 373 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
374 | #else |
375 | #define DATAGRAM_CHAN_P(chan) (0) | |
376 | #define DATAGRAM_CONN_P(proc) (0) | |
377 | #endif | |
378 | ||
93b4f699 RS |
379 | /* Maximum number of bytes to send to a pty without an eof. */ |
380 | static int pty_max_bytes; | |
3b9a3dfa | 381 | |
84af9896 RS |
382 | /* Nonzero means don't run process sentinels. This is used |
383 | when exiting. */ | |
384 | int inhibit_sentinels; | |
385 | ||
875e6b94 | 386 | #ifdef HAVE_PTYS |
e62cab61 DL |
387 | #ifdef HAVE_PTY_H |
388 | #include <pty.h> | |
389 | #endif | |
875e6b94 | 390 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
391 | |
392 | static char pty_name[24]; | |
875e6b94 | 393 | #endif |
d0d6b7c5 JB |
394 | \f |
395 | /* Compute the Lisp form of the process status, p->status, from | |
396 | the numeric status that was returned by `wait'. */ | |
397 | ||
bba104c1 | 398 | static Lisp_Object status_convert (int); |
f9738840 | 399 | |
ff6daed3 | 400 | static void |
d0d6b7c5 JB |
401 | update_status (p) |
402 | struct Lisp_Process *p; | |
403 | { | |
6bfd98e7 | 404 | eassert (p->raw_status_new); |
bba104c1 | 405 | p->status = status_convert (p->raw_status); |
6bfd98e7 | 406 | p->raw_status_new = 0; |
d0d6b7c5 JB |
407 | } |
408 | ||
177c0ea7 | 409 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
410 | the list that we use internally. */ |
411 | ||
ff6daed3 | 412 | static Lisp_Object |
bba104c1 | 413 | status_convert (int w) |
d0d6b7c5 JB |
414 | { |
415 | if (WIFSTOPPED (w)) | |
416 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
417 | else if (WIFEXITED (w)) | |
418 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
419 | WCOREDUMP (w) ? Qt : Qnil)); | |
420 | else if (WIFSIGNALED (w)) | |
421 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
422 | WCOREDUMP (w) ? Qt : Qnil)); | |
423 | else | |
424 | return Qrun; | |
425 | } | |
426 | ||
427 | /* Given a status-list, extract the three pieces of information | |
428 | and store them individually through the three pointers. */ | |
429 | ||
ff6daed3 | 430 | static void |
d0d6b7c5 JB |
431 | decode_status (l, symbol, code, coredump) |
432 | Lisp_Object l; | |
433 | Lisp_Object *symbol; | |
434 | int *code; | |
435 | int *coredump; | |
436 | { | |
437 | Lisp_Object tem; | |
438 | ||
bcd69aea | 439 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
440 | { |
441 | *symbol = l; | |
442 | *code = 0; | |
443 | *coredump = 0; | |
444 | } | |
445 | else | |
446 | { | |
70949dac KR |
447 | *symbol = XCAR (l); |
448 | tem = XCDR (l); | |
449 | *code = XFASTINT (XCAR (tem)); | |
450 | tem = XCDR (tem); | |
d0d6b7c5 JB |
451 | *coredump = !NILP (tem); |
452 | } | |
453 | } | |
454 | ||
455 | /* Return a string describing a process status list. */ | |
456 | ||
116c423c KS |
457 | static Lisp_Object |
458 | status_message (p) | |
459 | struct Lisp_Process *p; | |
d0d6b7c5 | 460 | { |
116c423c | 461 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
462 | Lisp_Object symbol; |
463 | int code, coredump; | |
464 | Lisp_Object string, string2; | |
465 | ||
466 | decode_status (status, &symbol, &code, &coredump); | |
467 | ||
468 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
469 | { | |
68c45bf0 | 470 | char *signame; |
ca9c0567 | 471 | synchronize_system_messages_locale (); |
68c45bf0 | 472 | signame = strsignal (code); |
b97ad9ea RS |
473 | if (signame == 0) |
474 | signame = "unknown"; | |
475 | string = build_string (signame); | |
d0d6b7c5 | 476 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
a814cc69 | 477 | SSET (string, 0, DOWNCASE (SREF (string, 0))); |
d0d6b7c5 JB |
478 | return concat2 (string, string2); |
479 | } | |
480 | else if (EQ (symbol, Qexit)) | |
481 | { | |
116c423c KS |
482 | if (NETCONN1_P (p)) |
483 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
484 | if (code == 0) |
485 | return build_string ("finished\n"); | |
f2980264 | 486 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 487 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
488 | return concat3 (build_string ("exited abnormally with code "), |
489 | string, string2); | |
d0d6b7c5 | 490 | } |
dd2a17ab KS |
491 | else if (EQ (symbol, Qfailed)) |
492 | { | |
493 | string = Fnumber_to_string (make_number (code)); | |
494 | string2 = build_string ("\n"); | |
e690ca94 KS |
495 | return concat3 (build_string ("failed with code "), |
496 | string, string2); | |
dd2a17ab | 497 | } |
d0d6b7c5 JB |
498 | else |
499 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
500 | } | |
501 | \f | |
502 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 503 | |
875e6b94 KH |
504 | /* Open an available pty, returning a file descriptor. |
505 | Return -1 on failure. | |
506 | The file name of the terminal corresponding to the pty | |
507 | is left in the variable pty_name. */ | |
508 | ||
ff6daed3 | 509 | static int |
d0d6b7c5 JB |
510 | allocate_pty () |
511 | { | |
dfcf069d | 512 | register int c, i; |
d0d6b7c5 JB |
513 | int fd; |
514 | ||
515 | #ifdef PTY_ITERATION | |
516 | PTY_ITERATION | |
517 | #else | |
518 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
519 | for (i = 0; i < 16; i++) | |
520 | #endif | |
521 | { | |
26d7389d | 522 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
523 | #ifdef PTY_NAME_SPRINTF |
524 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
525 | #else |
526 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
527 | #endif /* no PTY_NAME_SPRINTF */ |
528 | ||
4d7c105e RS |
529 | #ifdef PTY_OPEN |
530 | PTY_OPEN; | |
531 | #else /* no PTY_OPEN */ | |
34967d0f | 532 | { |
34967d0f SM |
533 | { /* Some systems name their pseudoterminals so that there are gaps in |
534 | the usual sequence - for example, on HP9000/S700 systems, there | |
535 | are no pseudoterminals with names ending in 'f'. So we wait for | |
536 | three failures in a row before deciding that we've reached the | |
537 | end of the ptys. */ | |
538 | int failed_count = 0; | |
f3d9532b | 539 | |
34967d0f SM |
540 | if (stat (pty_name, &stb) < 0) |
541 | { | |
542 | failed_count++; | |
543 | if (failed_count >= 3) | |
544 | return -1; | |
545 | } | |
546 | else | |
547 | failed_count = 0; | |
32676c08 | 548 | } |
34967d0f SM |
549 | # ifdef O_NONBLOCK |
550 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
551 | # else | |
552 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
553 | # endif | |
34967d0f | 554 | } |
4d7c105e | 555 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
556 | |
557 | if (fd >= 0) | |
558 | { | |
559 | /* check to make certain that both sides are available | |
560 | this avoids a nasty yet stupid bug in rlogins */ | |
561 | #ifdef PTY_TTY_NAME_SPRINTF | |
562 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 JB |
563 | #else |
564 | sprintf (pty_name, "/dev/tty%c%x", c, i); | |
d0d6b7c5 | 565 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
566 | if (access (pty_name, 6) != 0) |
567 | { | |
68c45bf0 | 568 | emacs_close (fd); |
132d0475 | 569 | # ifndef __sgi |
d0d6b7c5 | 570 | continue; |
34967d0f | 571 | # else |
d0d6b7c5 | 572 | return -1; |
132d0475 | 573 | # endif /* __sgi */ |
d0d6b7c5 | 574 | } |
d0d6b7c5 JB |
575 | setup_pty (fd); |
576 | return fd; | |
577 | } | |
578 | } | |
579 | return -1; | |
580 | } | |
581 | #endif /* HAVE_PTYS */ | |
582 | \f | |
ff6daed3 | 583 | static Lisp_Object |
d0d6b7c5 JB |
584 | make_process (name) |
585 | Lisp_Object name; | |
586 | { | |
587 | register Lisp_Object val, tem, name1; | |
588 | register struct Lisp_Process *p; | |
589 | char suffix[10]; | |
590 | register int i; | |
591 | ||
98423852 | 592 | p = allocate_process (); |
23d6bb9c | 593 | |
60f0fb11 SM |
594 | p->infd = -1; |
595 | p->outfd = -1; | |
596 | p->tick = 0; | |
597 | p->update_tick = 0; | |
6bfd98e7 | 598 | p->pid = 0; |
fd41ad98 | 599 | p->pty_flag = 0; |
6bfd98e7 | 600 | p->raw_status_new = 0; |
d0d6b7c5 JB |
601 | p->status = Qrun; |
602 | p->mark = Fmake_marker (); | |
847c048e | 603 | p->kill_without_query = 0; |
d0d6b7c5 | 604 | |
6b61353c | 605 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
606 | p->adaptive_read_buffering = 0; |
607 | p->read_output_delay = 0; | |
608 | p->read_output_skip = 0; | |
6b61353c KH |
609 | #endif |
610 | ||
d0d6b7c5 JB |
611 | /* If name is already in use, modify it until it is unused. */ |
612 | ||
613 | name1 = name; | |
614 | for (i = 1; ; i++) | |
615 | { | |
616 | tem = Fget_process (name1); | |
617 | if (NILP (tem)) break; | |
618 | sprintf (suffix, "<%d>", i); | |
619 | name1 = concat2 (name, build_string (suffix)); | |
620 | } | |
621 | name = name1; | |
622 | p->name = name; | |
23d6bb9c | 623 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
624 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
625 | return val; | |
626 | } | |
627 | ||
ff6daed3 | 628 | static void |
d0d6b7c5 JB |
629 | remove_process (proc) |
630 | register Lisp_Object proc; | |
631 | { | |
632 | register Lisp_Object pair; | |
633 | ||
634 | pair = Frassq (proc, Vprocess_alist); | |
635 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
636 | |
637 | deactivate_process (proc); | |
638 | } | |
03f04413 KH |
639 | |
640 | /* Setup coding systems of PROCESS. */ | |
641 | ||
642 | void | |
643 | setup_process_coding_systems (process) | |
644 | Lisp_Object process; | |
645 | { | |
646 | struct Lisp_Process *p = XPROCESS (process); | |
60f0fb11 SM |
647 | int inch = p->infd; |
648 | int outch = p->outfd; | |
8f924df7 | 649 | Lisp_Object coding_system; |
03f04413 | 650 | |
20f1ef2e KH |
651 | if (inch < 0 || outch < 0) |
652 | return; | |
653 | ||
03f04413 KH |
654 | if (!proc_decode_coding_system[inch]) |
655 | proc_decode_coding_system[inch] | |
656 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
8f924df7 | 657 | coding_system = p->decode_coding_system; |
03f04413 | 658 | if (! NILP (p->filter)) |
5431bd6a | 659 | ; |
03f04413 KH |
660 | else if (BUFFERP (p->buffer)) |
661 | { | |
662 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
8f924df7 | 663 | coding_system = raw_text_coding_system (coding_system); |
03f04413 | 664 | } |
8f924df7 | 665 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); |
03f04413 KH |
666 | |
667 | if (!proc_encode_coding_system[outch]) | |
668 | proc_encode_coding_system[outch] | |
669 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
670 | setup_coding_system (p->encode_coding_system, | |
671 | proc_encode_coding_system[outch]); | |
672 | } | |
d0d6b7c5 JB |
673 | \f |
674 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
675 | doc: /* Return t if OBJECT is a process. */) |
676 | (object) | |
4ee3e309 | 677 | Lisp_Object object; |
d0d6b7c5 | 678 | { |
4ee3e309 | 679 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
680 | } |
681 | ||
682 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
683 | doc: /* Return the process named NAME, or nil if there is none. */) |
684 | (name) | |
d0d6b7c5 JB |
685 | register Lisp_Object name; |
686 | { | |
bcd69aea | 687 | if (PROCESSP (name)) |
d0d6b7c5 | 688 | return name; |
b7826503 | 689 | CHECK_STRING (name); |
d0d6b7c5 JB |
690 | return Fcdr (Fassoc (name, Vprocess_alist)); |
691 | } | |
692 | ||
693 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
694 | doc: /* Return the (or a) process associated with BUFFER. |
695 | BUFFER may be a buffer or the name of one. */) | |
696 | (buffer) | |
4ee3e309 | 697 | register Lisp_Object buffer; |
d0d6b7c5 JB |
698 | { |
699 | register Lisp_Object buf, tail, proc; | |
700 | ||
4ee3e309 EN |
701 | if (NILP (buffer)) return Qnil; |
702 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
703 | if (NILP (buf)) return Qnil; |
704 | ||
99784d63 | 705 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 706 | { |
99784d63 | 707 | proc = Fcdr (XCAR (tail)); |
bcd69aea | 708 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
709 | return proc; |
710 | } | |
711 | return Qnil; | |
712 | } | |
713 | ||
ebb9e16f JB |
714 | /* This is how commands for the user decode process arguments. It |
715 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
716 | Buffers denote the first process in the buffer, and nil denotes the | |
717 | current buffer. */ | |
d0d6b7c5 | 718 | |
77b221b1 | 719 | static Lisp_Object |
d0d6b7c5 JB |
720 | get_process (name) |
721 | register Lisp_Object name; | |
722 | { | |
1619761d KH |
723 | register Lisp_Object proc, obj; |
724 | if (STRINGP (name)) | |
725 | { | |
726 | obj = Fget_process (name); | |
727 | if (NILP (obj)) | |
728 | obj = Fget_buffer (name); | |
729 | if (NILP (obj)) | |
d5db4077 | 730 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
731 | } |
732 | else if (NILP (name)) | |
733 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 734 | else |
1619761d KH |
735 | obj = name; |
736 | ||
737 | /* Now obj should be either a buffer object or a process object. | |
738 | */ | |
739 | if (BUFFERP (obj)) | |
d0d6b7c5 | 740 | { |
1619761d | 741 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 742 | if (NILP (proc)) |
d5db4077 | 743 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 744 | } |
d0d6b7c5 | 745 | else |
1619761d | 746 | { |
b7826503 | 747 | CHECK_PROCESS (obj); |
1619761d KH |
748 | proc = obj; |
749 | } | |
750 | return proc; | |
d0d6b7c5 JB |
751 | } |
752 | ||
a5cfdda8 KS |
753 | |
754 | #ifdef SIGCHLD | |
755 | /* Fdelete_process promises to immediately forget about the process, but in | |
756 | reality, Emacs needs to remember those processes until they have been | |
757 | treated by sigchld_handler; otherwise this handler would consider the | |
758 | process as being synchronous and say that the synchronous process is | |
759 | dead. */ | |
760 | static Lisp_Object deleted_pid_list; | |
761 | #endif | |
762 | ||
d0d6b7c5 | 763 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
764 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
765 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
766 | nil, indicating the current buffer's process. */) | |
767 | (process) | |
4ee3e309 | 768 | register Lisp_Object process; |
d0d6b7c5 | 769 | { |
ff6daed3 KS |
770 | register struct Lisp_Process *p; |
771 | ||
4ee3e309 | 772 | process = get_process (process); |
ff6daed3 KS |
773 | p = XPROCESS (process); |
774 | ||
6bfd98e7 | 775 | p->raw_status_new = 0; |
d888760c | 776 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 777 | { |
ff6daed3 | 778 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
60f0fb11 | 779 | p->tick = ++process_tick; |
ff6daed3 | 780 | status_notify (p); |
d0d6b7c5 | 781 | } |
60f0fb11 | 782 | else if (p->infd >= 0) |
d0d6b7c5 | 783 | { |
a5cfdda8 KS |
784 | #ifdef SIGCHLD |
785 | Lisp_Object symbol; | |
d30fe779 EZ |
786 | /* Assignment to EMACS_INT stops GCC whining about limited range |
787 | of data type. */ | |
29ed4d51 | 788 | EMACS_INT pid = p->pid; |
a5cfdda8 KS |
789 | |
790 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 791 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
792 | /* GC treated elements set to nil. */ |
793 | Fdelq (Qnil, deleted_pid_list)); | |
794 | /* If the process has already signaled, remove it from the list. */ | |
795 | if (p->raw_status_new) | |
796 | update_status (p); | |
797 | symbol = p->status; | |
798 | if (CONSP (p->status)) | |
799 | symbol = XCAR (p->status); | |
800 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
29ed4d51 CY |
801 | deleted_pid_list |
802 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
803 | else |
804 | #endif | |
805 | { | |
806 | Fkill_process (process, Qnil); | |
807 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ | |
808 | p->status | |
809 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); | |
60f0fb11 | 810 | p->tick = ++process_tick; |
a5cfdda8 KS |
811 | status_notify (p); |
812 | } | |
d0d6b7c5 | 813 | } |
4ee3e309 | 814 | remove_process (process); |
d0d6b7c5 JB |
815 | return Qnil; |
816 | } | |
817 | \f | |
818 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
819 | doc: /* Return the status of PROCESS. |
820 | The returned value is one of the following symbols: | |
821 | run -- for a process that is running. | |
822 | stop -- for a process stopped but continuable. | |
823 | exit -- for a process that has exited. | |
824 | signal -- for a process that has got a fatal signal. | |
825 | open -- for a network stream connection that is open. | |
e690ca94 | 826 | listen -- for a network stream server that is listening. |
fdb82f93 | 827 | closed -- for a network stream connection that is closed. |
e4984112 KS |
828 | connect -- when waiting for a non-blocking connection to complete. |
829 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
830 | nil -- if arg is a process name and no such process exists. |
831 | PROCESS may be a process, a buffer, the name of a process, or | |
832 | nil, indicating the current buffer's process. */) | |
833 | (process) | |
4ee3e309 | 834 | register Lisp_Object process; |
d0d6b7c5 JB |
835 | { |
836 | register struct Lisp_Process *p; | |
837 | register Lisp_Object status; | |
343f4114 | 838 | |
4ee3e309 EN |
839 | if (STRINGP (process)) |
840 | process = Fget_process (process); | |
343f4114 | 841 | else |
4ee3e309 | 842 | process = get_process (process); |
343f4114 | 843 | |
4ee3e309 EN |
844 | if (NILP (process)) |
845 | return process; | |
343f4114 | 846 | |
4ee3e309 | 847 | p = XPROCESS (process); |
6bfd98e7 | 848 | if (p->raw_status_new) |
d0d6b7c5 JB |
849 | update_status (p); |
850 | status = p->status; | |
bcd69aea | 851 | if (CONSP (status)) |
70949dac | 852 | status = XCAR (status); |
d888760c | 853 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 854 | { |
e690ca94 | 855 | if (EQ (status, Qexit)) |
d0d6b7c5 | 856 | status = Qclosed; |
e690ca94 KS |
857 | else if (EQ (p->command, Qt)) |
858 | status = Qstop; | |
859 | else if (EQ (status, Qrun)) | |
860 | status = Qopen; | |
d0d6b7c5 JB |
861 | } |
862 | return status; | |
863 | } | |
864 | ||
865 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
866 | 1, 1, 0, | |
fdb82f93 PJ |
867 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
868 | If PROCESS has not yet exited or died, return 0. */) | |
869 | (process) | |
4ee3e309 | 870 | register Lisp_Object process; |
d0d6b7c5 | 871 | { |
b7826503 | 872 | CHECK_PROCESS (process); |
6bfd98e7 | 873 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 EN |
874 | update_status (XPROCESS (process)); |
875 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 876 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
877 | return make_number (0); |
878 | } | |
879 | ||
880 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 881 | doc: /* Return the process id of PROCESS. |
f3d9532b | 882 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 PJ |
883 | For a network connection, this value is nil. */) |
884 | (process) | |
4ee3e309 | 885 | register Lisp_Object process; |
d0d6b7c5 | 886 | { |
d30fe779 EZ |
887 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
888 | data type. */ | |
889 | EMACS_INT pid; | |
890 | ||
b7826503 | 891 | CHECK_PROCESS (process); |
d30fe779 EZ |
892 | pid = XPROCESS (process)->pid; |
893 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
894 | } |
895 | ||
896 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
897 | doc: /* Return the name of PROCESS, as a string. |
898 | This is the name of the program invoked in PROCESS, | |
899 | possibly modified to make it unique among process names. */) | |
900 | (process) | |
4ee3e309 | 901 | register Lisp_Object process; |
d0d6b7c5 | 902 | { |
b7826503 | 903 | CHECK_PROCESS (process); |
4ee3e309 | 904 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
905 | } |
906 | ||
907 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
908 | doc: /* Return the command that was executed to start PROCESS. |
909 | This is a list of strings, the first string being the program executed | |
910 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
911 | For a network or serial process, this is nil (process is running) or t |
912 | \(process is stopped). */) | |
fdb82f93 | 913 | (process) |
4ee3e309 | 914 | register Lisp_Object process; |
d0d6b7c5 | 915 | { |
b7826503 | 916 | CHECK_PROCESS (process); |
4ee3e309 | 917 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
918 | } |
919 | ||
3b9a3dfa | 920 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
921 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
922 | This is the terminal that the process itself reads and writes on, | |
923 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
924 | (process) | |
4ee3e309 | 925 | register Lisp_Object process; |
3b9a3dfa | 926 | { |
b7826503 | 927 | CHECK_PROCESS (process); |
4ee3e309 | 928 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
929 | } |
930 | ||
d0d6b7c5 | 931 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
932 | 2, 2, 0, |
933 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
934 | (process, buffer) | |
4ee3e309 | 935 | register Lisp_Object process, buffer; |
d0d6b7c5 | 936 | { |
e690ca94 KS |
937 | struct Lisp_Process *p; |
938 | ||
b7826503 | 939 | CHECK_PROCESS (process); |
d0d6b7c5 | 940 | if (!NILP (buffer)) |
b7826503 | 941 | CHECK_BUFFER (buffer); |
e690ca94 KS |
942 | p = XPROCESS (process); |
943 | p->buffer = buffer; | |
d888760c | 944 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 945 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); |
03f04413 | 946 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
947 | return buffer; |
948 | } | |
949 | ||
950 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
951 | 1, 1, 0, |
952 | doc: /* Return the buffer PROCESS is associated with. | |
953 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
954 | (process) | |
4ee3e309 | 955 | register Lisp_Object process; |
d0d6b7c5 | 956 | { |
b7826503 | 957 | CHECK_PROCESS (process); |
4ee3e309 | 958 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
959 | } |
960 | ||
961 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
962 | 1, 1, 0, |
963 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
964 | (process) | |
4ee3e309 | 965 | register Lisp_Object process; |
d0d6b7c5 | 966 | { |
b7826503 | 967 | CHECK_PROCESS (process); |
4ee3e309 | 968 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
969 | } |
970 | ||
971 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
972 | 2, 2, 0, |
973 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 974 | A value of t means stop accepting output from the process. |
3452df9e KS |
975 | |
976 | When a process has a filter, its buffer is not used for output. | |
977 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 978 | passed to the filter. |
3452df9e | 979 | |
fdb82f93 | 980 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
981 | The string argument is normally a multibyte string, except: |
982 | - if the process' input coding system is no-conversion or raw-text, | |
983 | it is a unibyte string (the non-converted input), or else | |
984 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
985 | string (the result of converting the decoded input multibyte | |
986 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 987 | (process, filter) |
4ee3e309 | 988 | register Lisp_Object process, filter; |
d0d6b7c5 | 989 | { |
471f86b9 | 990 | struct Lisp_Process *p; |
177c0ea7 | 991 | |
b7826503 | 992 | CHECK_PROCESS (process); |
471f86b9 GM |
993 | p = XPROCESS (process); |
994 | ||
995 | /* Don't signal an error if the process' input file descriptor | |
996 | is closed. This could make debugging Lisp more difficult, | |
997 | for example when doing something like | |
998 | ||
999 | (setq process (start-process ...)) | |
1000 | (debug) | |
1001 | (set-process-filter process ...) */ | |
177c0ea7 | 1002 | |
60f0fb11 | 1003 | if (p->infd >= 0) |
a69281ff | 1004 | { |
e690ca94 | 1005 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 1006 | { |
60f0fb11 SM |
1007 | FD_CLR (p->infd, &input_wait_mask); |
1008 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1009 | } |
e690ca94 | 1010 | else if (EQ (p->filter, Qt) |
d888760c GM |
1011 | /* Network or serial process not stopped: */ |
1012 | && !EQ (p->command, Qt)) | |
471f86b9 | 1013 | { |
60f0fb11 SM |
1014 | FD_SET (p->infd, &input_wait_mask); |
1015 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1016 | } |
a69281ff | 1017 | } |
177c0ea7 | 1018 | |
471f86b9 | 1019 | p->filter = filter; |
d888760c | 1020 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 1021 | p->childp = Fplist_put (p->childp, QCfilter, filter); |
03f04413 | 1022 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1023 | return filter; |
1024 | } | |
1025 | ||
1026 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1027 | 1, 1, 0, |
1028 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1029 | See `set-process-filter' for more info on filter functions. */) | |
1030 | (process) | |
4ee3e309 | 1031 | register Lisp_Object process; |
d0d6b7c5 | 1032 | { |
b7826503 | 1033 | CHECK_PROCESS (process); |
4ee3e309 | 1034 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1035 | } |
1036 | ||
1037 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1038 | 2, 2, 0, |
1039 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1040 | The sentinel is called as a function when the process changes state. | |
1041 | It gets two arguments: the process, and a string describing the change. */) | |
1042 | (process, sentinel) | |
4ee3e309 | 1043 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 1044 | { |
6b61353c KH |
1045 | struct Lisp_Process *p; |
1046 | ||
b7826503 | 1047 | CHECK_PROCESS (process); |
6b61353c KH |
1048 | p = XPROCESS (process); |
1049 | ||
1050 | p->sentinel = sentinel; | |
d888760c | 1051 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6b61353c | 1052 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); |
d0d6b7c5 JB |
1053 | return sentinel; |
1054 | } | |
1055 | ||
1056 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1057 | 1, 1, 0, |
1058 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1059 | See `set-process-sentinel' for more info on sentinels. */) | |
1060 | (process) | |
4ee3e309 | 1061 | register Lisp_Object process; |
d0d6b7c5 | 1062 | { |
b7826503 | 1063 | CHECK_PROCESS (process); |
4ee3e309 | 1064 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1065 | } |
1066 | ||
396df322 | 1067 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1068 | Sset_process_window_size, 3, 3, 0, |
1069 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
1070 | (process, height, width) | |
4ee3e309 | 1071 | register Lisp_Object process, height, width; |
396df322 | 1072 | { |
b7826503 PJ |
1073 | CHECK_PROCESS (process); |
1074 | CHECK_NATNUM (height); | |
1075 | CHECK_NATNUM (width); | |
177c0ea7 | 1076 | |
60f0fb11 SM |
1077 | if (XPROCESS (process)->infd < 0 |
1078 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1079 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1080 | return Qnil; |
1081 | else | |
1082 | return Qt; | |
1083 | } | |
1084 | ||
52a1b894 | 1085 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1086 | Fset_process_inherit_coding_system_flag, |
1087 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1088 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1089 | If the second argument FLAG is non-nil, then the variable | |
1090 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1091 | will be bound to the value of the coding system used to decode | |
1092 | the process output. | |
1093 | ||
1094 | This is useful when the coding system specified for the process buffer | |
1095 | leaves either the character code conversion or the end-of-line conversion | |
1096 | unspecified, or if the coding system used to decode the process output | |
1097 | is more appropriate for saving the process buffer. | |
1098 | ||
1099 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1100 | starting the process is an alternative way of setting the inherit flag | |
1101 | for the process which will run. */) | |
1102 | (process, flag) | |
52a1b894 EZ |
1103 | register Lisp_Object process, flag; |
1104 | { | |
b7826503 | 1105 | CHECK_PROCESS (process); |
60f0fb11 | 1106 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1107 | return flag; |
1108 | } | |
1109 | ||
1110 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1111 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1112 | 1, 1, 0, | |
1113 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1114 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1115 | associated with PROCESS will inherit the coding system used to decode | |
1116 | the process output. */) | |
1117 | (process) | |
52a1b894 EZ |
1118 | register Lisp_Object process; |
1119 | { | |
b7826503 | 1120 | CHECK_PROCESS (process); |
60f0fb11 | 1121 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; |
52a1b894 EZ |
1122 | } |
1123 | ||
e690ca94 KS |
1124 | DEFUN ("set-process-query-on-exit-flag", |
1125 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1126 | 2, 2, 0, | |
1127 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1128 | If the second argument FLAG is non-nil, Emacs will query the user before |
e690ca94 KS |
1129 | exiting if PROCESS is running. */) |
1130 | (process, flag) | |
1131 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1132 | { |
b7826503 | 1133 | CHECK_PROCESS (process); |
60f0fb11 | 1134 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1135 | return flag; |
d0d6b7c5 | 1136 | } |
312c9964 | 1137 | |
e690ca94 KS |
1138 | DEFUN ("process-query-on-exit-flag", |
1139 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1140 | 1, 1, 0, |
f3d9532b | 1141 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
fdb82f93 | 1142 | (process) |
de282a05 RS |
1143 | register Lisp_Object process; |
1144 | { | |
b7826503 | 1145 | CHECK_PROCESS (process); |
60f0fb11 | 1146 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1147 | } |
1148 | ||
1149 | #ifdef DATAGRAM_SOCKETS | |
1150 | Lisp_Object Fprocess_datagram_address (); | |
1151 | #endif | |
1152 | ||
1153 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1154 | 1, 2, 0, | |
1155 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1156 | For a network or serial connection, the value depends on the optional |
1157 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1158 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1159 | connection. If KEY is t, the complete contact information for the | |
1160 | connection is returned, else the specific value for the keyword KEY is | |
1161 | returned. See `make-network-process' or `make-serial-process' for a | |
1162 | list of keywords. */) | |
e690ca94 KS |
1163 | (process, key) |
1164 | register Lisp_Object process, key; | |
1165 | { | |
1166 | Lisp_Object contact; | |
1167 | ||
1168 | CHECK_PROCESS (process); | |
1169 | contact = XPROCESS (process)->childp; | |
1170 | ||
1171 | #ifdef DATAGRAM_SOCKETS | |
1172 | if (DATAGRAM_CONN_P (process) | |
1173 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1174 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1175 | Fprocess_datagram_address (process)); |
1176 | #endif | |
1177 | ||
d888760c | 1178 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1179 | return contact; |
d888760c | 1180 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1181 | return Fcons (Fplist_get (contact, QChost), |
1182 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1183 | if (NILP (key) && SERIALCONN_P (process)) |
1184 | return Fcons (Fplist_get (contact, QCport), | |
1185 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1186 | return Fplist_get (contact, key); |
de282a05 RS |
1187 | } |
1188 | ||
faa7db08 KS |
1189 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1190 | 1, 1, 0, | |
1191 | doc: /* Return the plist of PROCESS. */) | |
1192 | (process) | |
1193 | register Lisp_Object process; | |
365aee82 | 1194 | { |
ac4a7584 | 1195 | CHECK_PROCESS (process); |
faa7db08 | 1196 | return XPROCESS (process)->plist; |
ac4a7584 | 1197 | } |
365aee82 | 1198 | |
faa7db08 KS |
1199 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1200 | 2, 2, 0, | |
26a086c6 | 1201 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1202 | (process, plist) |
1203 | register Lisp_Object process, plist; | |
ac4a7584 | 1204 | { |
365aee82 | 1205 | CHECK_PROCESS (process); |
faa7db08 | 1206 | CHECK_LIST (plist); |
365aee82 | 1207 | |
faa7db08 | 1208 | XPROCESS (process)->plist = plist; |
26a086c6 | 1209 | return plist; |
365aee82 KS |
1210 | } |
1211 | ||
312c9964 RS |
1212 | #if 0 /* Turned off because we don't currently record this info |
1213 | in the process. Perhaps add it. */ | |
1214 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1215 | doc: /* Return the connection type of PROCESS. |
1216 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1217 | a socket connection. */) | |
1218 | (process) | |
312c9964 RS |
1219 | Lisp_Object process; |
1220 | { | |
1221 | return XPROCESS (process)->type; | |
1222 | } | |
1223 | #endif | |
d888760c GM |
1224 | |
1225 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, | |
1226 | doc: /* Return the connection type of PROCESS. | |
1227 | The value is either the symbol `real', `network', or `serial'. | |
1228 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1229 | nil, indicating the current buffer's process. */) | |
1230 | (process) | |
1231 | Lisp_Object process; | |
1232 | { | |
1233 | Lisp_Object proc; | |
1234 | proc = get_process (process); | |
1235 | return XPROCESS (proc)->type; | |
1236 | } | |
991234f0 KS |
1237 | |
1238 | #ifdef HAVE_SOCKETS | |
1239 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1240 | 1, 2, 0, |
991234f0 | 1241 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1242 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1243 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1244 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1245 | number in the string, even when present in ADDRESS. |
1246 | Returns nil if format of ADDRESS is invalid. */) | |
0dccee41 KS |
1247 | (address, omit_port) |
1248 | Lisp_Object address, omit_port; | |
991234f0 | 1249 | { |
991234f0 KS |
1250 | if (NILP (address)) |
1251 | return Qnil; | |
1252 | ||
1253 | if (STRINGP (address)) /* AF_LOCAL */ | |
1254 | return address; | |
1255 | ||
e1652a86 | 1256 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1257 | { |
1258 | register struct Lisp_Vector *p = XVECTOR (address); | |
ded83665 | 1259 | Lisp_Object args[10]; |
0dccee41 | 1260 | int nargs, i; |
991234f0 | 1261 | |
e1652a86 | 1262 | if (p->size == 4 || (p->size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1263 | { |
1264 | args[0] = build_string ("%d.%d.%d.%d"); | |
1265 | nargs = 4; | |
1266 | } | |
1267 | else if (p->size == 5) | |
1268 | { | |
1269 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1270 | nargs = 5; | |
1271 | } | |
e1652a86 KS |
1272 | else if (p->size == 8 || (p->size == 9 && !NILP (omit_port))) |
1273 | { | |
1274 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1275 | nargs = 8; | |
1276 | } | |
1277 | else if (p->size == 9) | |
1278 | { | |
1279 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1280 | nargs = 9; | |
1281 | } | |
0dccee41 | 1282 | else |
991234f0 KS |
1283 | return Qnil; |
1284 | ||
0dccee41 | 1285 | for (i = 0; i < nargs; i++) |
cbf23adb JB |
1286 | { |
1287 | EMACS_INT element = XINT (p->contents[i]); | |
1288 | ||
1289 | if (element < 0 || element > 65535) | |
1290 | return Qnil; | |
1291 | ||
1292 | if (nargs <= 5 /* IPv4 */ | |
1293 | && i < 4 /* host, not port */ | |
1294 | && element > 255) | |
1295 | return Qnil; | |
1296 | ||
1297 | args[i+1] = p->contents[i]; | |
1298 | } | |
1299 | ||
0dccee41 | 1300 | return Fformat (nargs+1, args); |
991234f0 KS |
1301 | } |
1302 | ||
1303 | if (CONSP (address)) | |
1304 | { | |
1305 | Lisp_Object args[2]; | |
1306 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1307 | args[1] = Fcar (address); |
991234f0 | 1308 | return Fformat (2, args); |
991234f0 KS |
1309 | } |
1310 | ||
1311 | return Qnil; | |
1312 | } | |
1313 | #endif | |
d0d6b7c5 | 1314 | \f |
ff6daed3 | 1315 | static Lisp_Object |
e690ca94 KS |
1316 | list_processes_1 (query_only) |
1317 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1318 | { |
1319 | register Lisp_Object tail, tem; | |
1320 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1321 | register struct Lisp_Process *p; |
e690ca94 KS |
1322 | char tembuf[300]; |
1323 | int w_proc, w_buffer, w_tty; | |
1eed3bdc | 1324 | int exited = 0; |
e690ca94 KS |
1325 | Lisp_Object i_status, i_buffer, i_tty, i_command; |
1326 | ||
1327 | w_proc = 4; /* Proc */ | |
1328 | w_buffer = 6; /* Buffer */ | |
1329 | w_tty = 0; /* Omit if no ttys */ | |
1330 | ||
99784d63 | 1331 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
e690ca94 KS |
1332 | { |
1333 | int i; | |
1334 | ||
99784d63 | 1335 | proc = Fcdr (XCAR (tail)); |
e690ca94 | 1336 | p = XPROCESS (proc); |
d888760c | 1337 | if (NILP (p->type)) |
e690ca94 | 1338 | continue; |
60f0fb11 | 1339 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 KS |
1340 | continue; |
1341 | if (STRINGP (p->name) | |
d5db4077 | 1342 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1343 | w_proc = i; |
1344 | if (!NILP (p->buffer)) | |
1345 | { | |
e69c4cae SM |
1346 | if (NILP (XBUFFER (p->buffer)->name)) |
1347 | { | |
1348 | if (w_buffer < 8) | |
1349 | w_buffer = 8; /* (Killed) */ | |
1350 | } | |
d5db4077 | 1351 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1352 | w_buffer = i; |
1353 | } | |
1354 | if (STRINGP (p->tty_name) | |
d5db4077 | 1355 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1356 | w_tty = i; |
1357 | } | |
1358 | ||
1359 | XSETFASTINT (i_status, w_proc + 1); | |
1360 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1361 | if (w_tty) | |
1362 | { | |
1363 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
d3c0009d AS |
1364 | XSETFASTINT (i_command, XFASTINT (i_tty) + w_tty + 1); |
1365 | } | |
1366 | else | |
1367 | { | |
e690ca94 KS |
1368 | i_tty = Qnil; |
1369 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1370 | } | |
d0d6b7c5 | 1371 | |
22719df2 | 1372 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1373 | |
1374 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1375 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1376 | |
1377 | current_buffer->truncate_lines = Qt; | |
1378 | ||
e690ca94 KS |
1379 | write_string ("Proc", -1); |
1380 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1381 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1382 | if (!NILP (i_tty)) | |
1383 | { | |
1384 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1385 | } | |
1386 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1387 | write_string ("\n", -1); | |
1388 | ||
1389 | write_string ("----", -1); | |
1390 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1391 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1392 | if (!NILP (i_tty)) | |
1393 | { | |
1394 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1395 | } | |
1396 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1397 | write_string ("\n", -1); | |
d0d6b7c5 | 1398 | |
99784d63 | 1399 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 JB |
1400 | { |
1401 | Lisp_Object symbol; | |
1402 | ||
99784d63 | 1403 | proc = Fcdr (XCAR (tail)); |
d0d6b7c5 | 1404 | p = XPROCESS (proc); |
d888760c | 1405 | if (NILP (p->type)) |
d0d6b7c5 | 1406 | continue; |
60f0fb11 | 1407 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 | 1408 | continue; |
d0d6b7c5 JB |
1409 | |
1410 | Finsert (1, &p->name); | |
e690ca94 | 1411 | Findent_to (i_status, minspace); |
d0d6b7c5 | 1412 | |
6bfd98e7 | 1413 | if (p->raw_status_new) |
d0d6b7c5 JB |
1414 | update_status (p); |
1415 | symbol = p->status; | |
bcd69aea | 1416 | if (CONSP (p->status)) |
70949dac | 1417 | symbol = XCAR (p->status); |
d0d6b7c5 | 1418 | |
d0d6b7c5 JB |
1419 | if (EQ (symbol, Qsignal)) |
1420 | { | |
1421 | Lisp_Object tem; | |
1422 | tem = Fcar (Fcdr (p->status)); | |
7c2fb837 | 1423 | Fprinc (symbol, Qnil); |
d0d6b7c5 | 1424 | } |
d888760c | 1425 | else if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 1426 | { |
e690ca94 | 1427 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1428 | write_string ("closed", -1); |
e690ca94 KS |
1429 | else if (EQ (p->command, Qt)) |
1430 | write_string ("stopped", -1); | |
1431 | else if (EQ (symbol, Qrun)) | |
1432 | write_string ("open", -1); | |
d0d6b7c5 JB |
1433 | else |
1434 | Fprinc (symbol, Qnil); | |
1435 | } | |
d888760c GM |
1436 | else if (SERIALCONN1_P (p)) |
1437 | { | |
1438 | write_string ("running", -1); | |
1439 | } | |
d0d6b7c5 JB |
1440 | else |
1441 | Fprinc (symbol, Qnil); | |
1442 | ||
1443 | if (EQ (symbol, Qexit)) | |
1444 | { | |
1445 | Lisp_Object tem; | |
1446 | tem = Fcar (Fcdr (p->status)); | |
1447 | if (XFASTINT (tem)) | |
1448 | { | |
3162bafa | 1449 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1450 | write_string (tembuf, -1); |
1451 | } | |
1452 | } | |
1453 | ||
1eed3bdc KS |
1454 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) || EQ (symbol, Qclosed)) |
1455 | exited++; | |
d0d6b7c5 | 1456 | |
e690ca94 | 1457 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1458 | if (NILP (p->buffer)) |
1459 | insert_string ("(none)"); | |
1460 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1461 | insert_string ("(Killed)"); | |
1462 | else | |
1463 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1464 | ||
e690ca94 KS |
1465 | if (!NILP (i_tty)) |
1466 | { | |
1467 | Findent_to (i_tty, minspace); | |
1468 | if (STRINGP (p->tty_name)) | |
1469 | Finsert (1, &p->tty_name); | |
1470 | } | |
a9fde32e | 1471 | |
e690ca94 | 1472 | Findent_to (i_command, minspace); |
a9fde32e | 1473 | |
e690ca94 KS |
1474 | if (EQ (p->status, Qlisten)) |
1475 | { | |
1476 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1477 | if (INTEGERP (port)) | |
1478 | port = Fnumber_to_string (port); | |
991234f0 | 1479 | if (NILP (port)) |
0dccee41 | 1480 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1481 | sprintf (tembuf, "(network %s server on %s)\n", |
60f0fb11 | 1482 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1483 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1484 | insert_string (tembuf); |
1485 | } | |
1486 | else if (NETCONN1_P (p)) | |
d0d6b7c5 | 1487 | { |
e690ca94 KS |
1488 | /* For a local socket, there is no host name, |
1489 | so display service instead. */ | |
1490 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1491 | if (!STRINGP (host)) | |
1492 | { | |
1493 | host = Fplist_get (p->childp, QCservice); | |
1494 | if (INTEGERP (host)) | |
1495 | host = Fnumber_to_string (host); | |
1496 | } | |
991234f0 | 1497 | if (NILP (host)) |
0dccee41 | 1498 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1499 | sprintf (tembuf, "(network %s connection to %s)\n", |
60f0fb11 | 1500 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1501 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 JB |
1502 | insert_string (tembuf); |
1503 | } | |
d888760c GM |
1504 | else if (SERIALCONN1_P (p)) |
1505 | { | |
1506 | Lisp_Object port = Fplist_get (p->childp, QCport); | |
1507 | Lisp_Object speed = Fplist_get (p->childp, QCspeed); | |
1508 | insert_string ("(serial port "); | |
1509 | if (STRINGP (port)) | |
1510 | insert_string (SDATA (port)); | |
1511 | else | |
1512 | insert_string ("?"); | |
1513 | if (INTEGERP (speed)) | |
1514 | { | |
1515 | sprintf (tembuf, " at %d b/s", XINT (speed)); | |
1516 | insert_string (tembuf); | |
1517 | } | |
1518 | insert_string (")\n"); | |
1519 | } | |
177c0ea7 | 1520 | else |
d0d6b7c5 JB |
1521 | { |
1522 | tem = p->command; | |
1523 | while (1) | |
1524 | { | |
1525 | tem1 = Fcar (tem); | |
1526 | Finsert (1, &tem1); | |
1527 | tem = Fcdr (tem); | |
1528 | if (NILP (tem)) | |
1529 | break; | |
1530 | insert_string (" "); | |
1531 | } | |
1532 | insert_string ("\n"); | |
1533 | } | |
1534 | } | |
1eed3bdc KS |
1535 | if (exited) |
1536 | status_notify (NULL); | |
d0d6b7c5 JB |
1537 | return Qnil; |
1538 | } | |
1539 | ||
e690ca94 | 1540 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1541 | doc: /* Display a list of all processes. |
e690ca94 KS |
1542 | If optional argument QUERY-ONLY is non-nil, only processes with |
1543 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1544 | Any process listed as exited or signaled is actually eliminated |
1545 | after the listing is made. */) | |
e690ca94 KS |
1546 | (query_only) |
1547 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1548 | { |
1549 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1550 | list_processes_1, query_only); |
d0d6b7c5 JB |
1551 | return Qnil; |
1552 | } | |
1553 | ||
1554 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1555 | doc: /* Return a list of all processes. */) |
1556 | () | |
d0d6b7c5 JB |
1557 | { |
1558 | return Fmapcar (Qcdr, Vprocess_alist); | |
1559 | } | |
1560 | \f | |
b0310da4 JB |
1561 | /* Starting asynchronous inferior processes. */ |
1562 | ||
1563 | static Lisp_Object start_process_unwind (); | |
1564 | ||
d0d6b7c5 | 1565 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1566 | doc: /* Start a program in a subprocess. Return the process object for it. |
1567 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1568 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1569 | |
1570 | Process output (both standard output and standard error streams) goes | |
1571 | at end of BUFFER, unless you specify an output stream or filter | |
1572 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1573 | this process is not associated with any buffer. |
1574 | ||
553acde5 | 1575 | PROGRAM is the program file name. It is searched for in PATH. |
3ecdf100 | 1576 | Remaining arguments are strings to give program as arguments. |
320aebc9 | 1577 | |
4b6c5eee EZ |
1578 | If you want to separate standard output from standard error, invoke |
1579 | the command through a shell and redirect one of them using the shell | |
1580 | syntax. | |
320aebc9 | 1581 | |
3ecdf100 | 1582 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1583 | (nargs, args) |
d0d6b7c5 JB |
1584 | int nargs; |
1585 | register Lisp_Object *args; | |
1586 | { | |
1e30af70 | 1587 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1588 | register unsigned char **new_argv; |
d0d6b7c5 | 1589 | register int i; |
aed13378 | 1590 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1591 | |
1592 | buffer = args[1]; | |
1593 | if (!NILP (buffer)) | |
1594 | buffer = Fget_buffer_create (buffer); | |
1595 | ||
1e30af70 JB |
1596 | /* Make sure that the child will be able to chdir to the current |
1597 | buffer's current directory, or its unhandled equivalent. We | |
1598 | can't just have the child check for an error when it does the | |
1599 | chdir, since it's in a vfork. | |
1600 | ||
1601 | We have to GCPRO around this because Fexpand_file_name and | |
1602 | Funhandled_file_name_directory might call a file name handling | |
1603 | function. The argument list is protected by the caller, so all | |
1604 | we really have to worry about is buffer. */ | |
1605 | { | |
1606 | struct gcpro gcpro1, gcpro2; | |
1607 | ||
1608 | current_dir = current_buffer->directory; | |
1609 | ||
1610 | GCPRO2 (buffer, current_dir); | |
1611 | ||
ca319910 SM |
1612 | current_dir = Funhandled_file_name_directory (current_dir); |
1613 | if (NILP (current_dir)) | |
1614 | /* If the file name handler says that current_dir is unreachable, use | |
1615 | a sensible default. */ | |
1616 | current_dir = build_string ("~/"); | |
1617 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1618 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1619 | report_file_error ("Setting current directory", | |
1620 | Fcons (current_buffer->directory, Qnil)); | |
1621 | ||
1622 | UNGCPRO; | |
1623 | } | |
1624 | ||
d0d6b7c5 | 1625 | name = args[0]; |
b7826503 | 1626 | CHECK_STRING (name); |
d0d6b7c5 JB |
1627 | |
1628 | program = args[2]; | |
1629 | ||
b7826503 | 1630 | CHECK_STRING (program); |
d0d6b7c5 | 1631 | |
d0d6b7c5 | 1632 | proc = make_process (name); |
b0310da4 JB |
1633 | /* If an error occurs and we can't start the process, we want to |
1634 | remove it from the process list. This means that each error | |
1635 | check in create_process doesn't need to call remove_process | |
1636 | itself; it's all taken care of here. */ | |
1637 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1638 | |
1639 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1640 | XPROCESS (proc)->plist = Qnil; |
d888760c | 1641 | XPROCESS (proc)->type = Qreal; |
d0d6b7c5 JB |
1642 | XPROCESS (proc)->buffer = buffer; |
1643 | XPROCESS (proc)->sentinel = Qnil; | |
1644 | XPROCESS (proc)->filter = Qnil; | |
1645 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); | |
1646 | ||
6b61353c | 1647 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1648 | XPROCESS (proc)->adaptive_read_buffering |
1649 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1650 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1651 | #endif |
1652 | ||
7af71e17 | 1653 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1654 | if (BUFFERP (buffer)) |
d8a2934e RS |
1655 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1656 | BUF_ZV (XBUFFER (buffer)), | |
1657 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1658 | |
67918941 | 1659 | { |
d5d4ae71 KH |
1660 | /* Decide coding systems for communicating with the process. Here |
1661 | we don't setup the structure coding_system nor pay attention to | |
1662 | unibyte mode. They are done in create_process. */ | |
1663 | ||
67918941 RS |
1664 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1665 | Lisp_Object coding_systems = Qt; | |
1666 | Lisp_Object val, *args2; | |
a4a37e65 | 1667 | struct gcpro gcpro1, gcpro2; |
67918941 | 1668 | |
d5d4ae71 KH |
1669 | val = Vcoding_system_for_read; |
1670 | if (NILP (val)) | |
67918941 RS |
1671 | { |
1672 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1673 | args2[0] = Qstart_process; | |
1674 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1675 | GCPRO2 (proc, current_dir); |
67918941 RS |
1676 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1677 | UNGCPRO; | |
1678 | if (CONSP (coding_systems)) | |
70949dac | 1679 | val = XCAR (coding_systems); |
67918941 | 1680 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1681 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1682 | } |
1683 | XPROCESS (proc)->decode_coding_system = val; | |
1684 | ||
d5d4ae71 KH |
1685 | val = Vcoding_system_for_write; |
1686 | if (NILP (val)) | |
67918941 RS |
1687 | { |
1688 | if (EQ (coding_systems, Qt)) | |
1689 | { | |
1690 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1691 | args2[0] = Qstart_process; | |
1692 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1693 | GCPRO2 (proc, current_dir); |
67918941 RS |
1694 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1695 | UNGCPRO; | |
1696 | } | |
1697 | if (CONSP (coding_systems)) | |
70949dac | 1698 | val = XCDR (coding_systems); |
67918941 | 1699 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1700 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1701 | } |
1702 | XPROCESS (proc)->encode_coding_system = val; | |
1703 | } | |
0fa1789e | 1704 | |
a4a37e65 KH |
1705 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); |
1706 | ||
ed30cf85 RS |
1707 | /* If program file name is not absolute, search our path for it. |
1708 | Put the name we will really use in TEM. */ | |
d5db4077 KR |
1709 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) |
1710 | && !(SCHARS (program) > 1 | |
1711 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
a4a37e65 KH |
1712 | { |
1713 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1714 | ||
1715 | tem = Qnil; | |
1716 | GCPRO4 (name, program, buffer, current_dir); | |
cc4db0c7 | 1717 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); |
a4a37e65 KH |
1718 | UNGCPRO; |
1719 | if (NILP (tem)) | |
1720 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1721 | tem = Fexpand_file_name (tem, Qnil); | |
a4a37e65 KH |
1722 | } |
1723 | else | |
1724 | { | |
1725 | if (!NILP (Ffile_directory_p (program))) | |
1726 | error ("Specified program for new process is a directory"); | |
ed30cf85 | 1727 | tem = program; |
a4a37e65 KH |
1728 | } |
1729 | ||
ed30cf85 RS |
1730 | /* If program file name starts with /: for quoting a magic name, |
1731 | discard that. */ | |
1732 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1733 | && SREF (tem, 1) == ':') | |
1734 | tem = Fsubstring (tem, make_number (2), Qnil); | |
1735 | ||
1736 | /* Encode the file name and put it in NEW_ARGV. | |
1737 | That's where the child will use it to execute the program. */ | |
1738 | tem = ENCODE_FILE (tem); | |
1739 | new_argv[0] = SDATA (tem); | |
1740 | ||
a4a37e65 KH |
1741 | /* Here we encode arguments by the coding system used for sending |
1742 | data to the process. We don't support using different coding | |
1743 | systems for encoding arguments and for encoding data sent to the | |
1744 | process. */ | |
1745 | ||
1746 | for (i = 3; i < nargs; i++) | |
1747 | { | |
1748 | tem = args[i]; | |
b7826503 | 1749 | CHECK_STRING (tem); |
a4a37e65 KH |
1750 | if (STRING_MULTIBYTE (tem)) |
1751 | tem = (code_convert_string_norecord | |
1752 | (tem, XPROCESS (proc)->encode_coding_system, 1)); | |
d5db4077 | 1753 | new_argv[i - 2] = SDATA (tem); |
a4a37e65 KH |
1754 | } |
1755 | new_argv[i - 2] = 0; | |
a4a37e65 | 1756 | |
0fa1789e | 1757 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
60f0fb11 | 1758 | XPROCESS (proc)->decoding_carryover = 0; |
0fa1789e KH |
1759 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); |
1760 | ||
52a1b894 | 1761 | XPROCESS (proc)->inherit_coding_system_flag |
e6fca843 | 1762 | = !(NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 1763 | |
6b53bb85 | 1764 | create_process (proc, (char **) new_argv, current_dir); |
d0d6b7c5 | 1765 | |
b0310da4 | 1766 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1767 | } |
1768 | ||
b0310da4 | 1769 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1770 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1771 | an error and the process wasn't started successfully, so we should |
1772 | remove it from the process list. */ | |
1773 | static Lisp_Object | |
1774 | start_process_unwind (proc) | |
1775 | Lisp_Object proc; | |
1776 | { | |
bcd69aea | 1777 | if (!PROCESSP (proc)) |
b0310da4 JB |
1778 | abort (); |
1779 | ||
1780 | /* Was PROC started successfully? */ | |
6bfd98e7 | 1781 | if (XPROCESS (proc)->pid <= 0) |
b0310da4 JB |
1782 | remove_process (proc); |
1783 | ||
1784 | return Qnil; | |
1785 | } | |
1786 | ||
ff6daed3 | 1787 | static void |
30904ab7 GM |
1788 | create_process_1 (timer) |
1789 | struct atimer *timer; | |
d0d6b7c5 | 1790 | { |
30904ab7 | 1791 | /* Nothing to do. */ |
d0d6b7c5 JB |
1792 | } |
1793 | ||
30904ab7 | 1794 | |
d0d6b7c5 JB |
1795 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1796 | #ifdef USG | |
1797 | #ifdef SIGCHLD | |
1798 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1799 | ||
1800 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1801 | int sigchld_deferred; | |
1802 | ||
1803 | SIGTYPE | |
1804 | create_process_sigchld () | |
1805 | { | |
1806 | signal (SIGCHLD, create_process_sigchld); | |
1807 | ||
1808 | sigchld_deferred = 1; | |
1809 | } | |
1810 | #endif | |
1811 | #endif | |
1812 | #endif | |
1813 | ||
6b53bb85 | 1814 | void |
1e30af70 | 1815 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1816 | Lisp_Object process; |
1817 | char **new_argv; | |
1e30af70 | 1818 | Lisp_Object current_dir; |
d0d6b7c5 | 1819 | { |
29ed4d51 CY |
1820 | int inchannel, outchannel; |
1821 | pid_t pid; | |
d0d6b7c5 | 1822 | int sv[2]; |
2c4df143 YM |
1823 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1824 | int wait_child_setup[2]; | |
1825 | #endif | |
0dc70c33 KH |
1826 | #ifdef POSIX_SIGNALS |
1827 | sigset_t procmask; | |
1828 | sigset_t blocked; | |
1829 | struct sigaction sigint_action; | |
1830 | struct sigaction sigquit_action; | |
1831 | #ifdef AIX | |
1832 | struct sigaction sighup_action; | |
1833 | #endif | |
1834 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1835 | #if 0 |
d0d6b7c5 JB |
1836 | #ifdef SIGCHLD |
1837 | SIGTYPE (*sigchld)(); | |
1838 | #endif | |
41d03b9a | 1839 | #endif /* 0 */ |
0dc70c33 | 1840 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1841 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1842 | volatile int forkin, forkout; | |
1843 | volatile int pty_flag = 0; | |
3ec68006 | 1844 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1845 | extern char **environ; |
3ec68006 | 1846 | #endif |
d0d6b7c5 | 1847 | |
d0d6b7c5 JB |
1848 | inchannel = outchannel = -1; |
1849 | ||
1850 | #ifdef HAVE_PTYS | |
fe45da4e | 1851 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1852 | outchannel = inchannel = allocate_pty (); |
1853 | ||
d0d6b7c5 JB |
1854 | if (inchannel >= 0) |
1855 | { | |
2af70a0c RS |
1856 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1857 | /* On most USG systems it does not work to open the pty's tty here, | |
1858 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1859 | #ifdef O_NOCTTY |
1860 | /* Don't let this terminal become our controlling terminal | |
1861 | (in case we don't have one). */ | |
68c45bf0 | 1862 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1863 | #else |
68c45bf0 | 1864 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1865 | #endif |
1866 | if (forkin < 0) | |
1867 | report_file_error ("Opening pty", Qnil); | |
e39a993c | 1868 | #if defined (DONT_REOPEN_PTY) |
21375f1e YM |
1869 | /* In the case that vfork is defined as fork, the parent process |
1870 | (Emacs) may send some data before the child process completes | |
1871 | tty options setup. So we setup tty before forking. */ | |
1872 | child_setup_tty (forkout); | |
e39a993c | 1873 | #endif /* DONT_REOPEN_PTY */ |
d0d6b7c5 JB |
1874 | #else |
1875 | forkin = forkout = -1; | |
2af70a0c | 1876 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1877 | pty_flag = 1; |
1878 | } | |
1879 | else | |
1880 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1881 | { |
fc14013c KH |
1882 | int tem; |
1883 | tem = pipe (sv); | |
1884 | if (tem < 0) | |
1885 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1886 | inchannel = sv[0]; |
1887 | forkout = sv[1]; | |
fc14013c KH |
1888 | tem = pipe (sv); |
1889 | if (tem < 0) | |
1890 | { | |
68c45bf0 PE |
1891 | emacs_close (inchannel); |
1892 | emacs_close (forkout); | |
fc14013c KH |
1893 | report_file_error ("Creating pipe", Qnil); |
1894 | } | |
d0d6b7c5 JB |
1895 | outchannel = sv[1]; |
1896 | forkin = sv[0]; | |
1897 | } | |
d0d6b7c5 | 1898 | |
2c4df143 YM |
1899 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1900 | { | |
1901 | int tem; | |
1902 | ||
1903 | tem = pipe (wait_child_setup); | |
1904 | if (tem < 0) | |
1905 | report_file_error ("Creating pipe", Qnil); | |
1906 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1907 | if (tem >= 0) | |
1908 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1909 | if (tem < 0) | |
1910 | { | |
1911 | emacs_close (wait_child_setup[0]); | |
1912 | emacs_close (wait_child_setup[1]); | |
1913 | report_file_error ("Setting file descriptor flags", Qnil); | |
1914 | } | |
1915 | } | |
1916 | #endif | |
1917 | ||
d0d6b7c5 JB |
1918 | #if 0 |
1919 | /* Replaced by close_process_descs */ | |
1920 | set_exclusive_use (inchannel); | |
1921 | set_exclusive_use (outchannel); | |
1922 | #endif | |
1923 | ||
d0d6b7c5 JB |
1924 | #ifdef O_NONBLOCK |
1925 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1926 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1927 | #else |
1928 | #ifdef O_NDELAY | |
1929 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1930 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1931 | #endif |
1932 | #endif | |
1933 | ||
1934 | /* Record this as an active process, with its channels. | |
1935 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1936 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1937 | XPROCESS (process)->infd = inchannel; |
1938 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1939 | |
1940 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1941 | It was only used for getting the foreground tty process, so now | |
1942 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1943 | more portable (see USG_SUBTTY_WORKS above). */ | |
1944 | ||
60f0fb11 | 1945 | XPROCESS (process)->pty_flag = pty_flag; |
d0d6b7c5 | 1946 | XPROCESS (process)->status = Qrun; |
03f04413 | 1947 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1948 | |
1949 | /* Delay interrupts until we have a chance to store | |
1950 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1951 | #ifdef POSIX_SIGNALS |
1952 | sigemptyset (&blocked); | |
1953 | #ifdef SIGCHLD | |
1954 | sigaddset (&blocked, SIGCHLD); | |
1955 | #endif | |
351e611f | 1956 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1957 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1958 | this sets the parent's signal handlers as well as the child's. | |
1959 | So delay all interrupts whose handlers the child might munge, | |
1960 | and record the current handlers so they can be restored later. */ | |
1961 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1962 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1963 | #ifdef AIX | |
1964 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1965 | #endif | |
351e611f | 1966 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
1967 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
1968 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 | 1969 | #ifdef SIGCHLD |
e39a993c | 1970 | #if defined (BSD_SYSTEM) || defined (HPUX) |
d0d6b7c5 JB |
1971 | sigsetmask (sigmask (SIGCHLD)); |
1972 | #else /* ordinary USG */ | |
1973 | #if 0 | |
1974 | sigchld_deferred = 0; | |
1975 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
1976 | #endif | |
1977 | #endif /* ordinary USG */ | |
d0d6b7c5 | 1978 | #endif /* SIGCHLD */ |
0dc70c33 | 1979 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 1980 | |
3081bf8d | 1981 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1982 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1983 | if (inchannel > max_process_desc) |
1984 | max_process_desc = inchannel; | |
1985 | ||
d0d6b7c5 JB |
1986 | /* Until we store the proper pid, enable sigchld_handler |
1987 | to recognize an unknown pid as standing for this process. | |
1988 | It is very important not to let this `marker' value stay | |
1989 | in the table after this function has returned; if it does | |
1990 | it might cause call-process to hang and subsequent asynchronous | |
1991 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1992 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1993 | |
ececcbec | 1994 | BLOCK_INPUT; |
177c0ea7 | 1995 | |
d0d6b7c5 JB |
1996 | { |
1997 | /* child_setup must clobber environ on systems with true vfork. | |
1998 | Protect it from permanent change. */ | |
1999 | char **save_environ = environ; | |
2000 | ||
14dc6093 | 2001 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 2002 | |
e98d950b | 2003 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
2004 | pid = vfork (); |
2005 | if (pid == 0) | |
e98d950b | 2006 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2007 | { |
2008 | int xforkin = forkin; | |
2009 | int xforkout = forkout; | |
2010 | ||
2011 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
2012 | but fails to handle all the cases. */ | |
2013 | /* Make sure SIGCHLD is not blocked in the child. */ | |
2014 | sigsetmask (SIGEMPTYMASK); | |
2015 | #endif | |
2016 | ||
2017 | /* Make the pty be the controlling terminal of the process. */ | |
2018 | #ifdef HAVE_PTYS | |
2019 | /* First, disconnect its current controlling terminal. */ | |
2020 | #ifdef HAVE_SETSID | |
7ce48618 RS |
2021 | /* We tried doing setsid only if pty_flag, but it caused |
2022 | process_set_signal to fail on SGI when using a pipe. */ | |
2023 | setsid (); | |
ce4c9c90 | 2024 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 2025 | if (pty_flag) |
39e9ebcd | 2026 | { |
39e9ebcd RS |
2027 | #ifdef TIOCSCTTY |
2028 | /* We ignore the return value | |
2029 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
2030 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 2031 | #endif |
39e9ebcd | 2032 | } |
d0d6b7c5 | 2033 | #else /* not HAVE_SETSID */ |
c14e53a4 | 2034 | #ifdef USG |
000ab717 | 2035 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
2036 | afterwards. Otherwise, we lose our controlling tty which |
2037 | is set when we open the pty. */ | |
2038 | setpgrp (); | |
2039 | #endif /* USG */ | |
2040 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
2041 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
2042 | if (pty_flag && xforkin >= 0) | |
2043 | { | |
2044 | struct termios t; | |
2045 | tcgetattr (xforkin, &t); | |
2046 | t.c_lflag = LDISC1; | |
2047 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 2048 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
2049 | } |
2050 | #else | |
aafadd9f | 2051 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 2052 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
2053 | { |
2054 | /* Use new line discipline. */ | |
2055 | int ldisc = NTTYDISC; | |
4458f555 | 2056 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 2057 | } |
000ab717 | 2058 | #endif |
9bcf8ec6 | 2059 | #endif |
177c0ea7 | 2060 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
2061 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
2062 | can do TIOCSPGRP only to the process's controlling tty. */ | |
2063 | if (pty_flag) | |
2064 | { | |
177c0ea7 | 2065 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 2066 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 2067 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 2068 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 2069 | emacs_close (j); |
5a570e37 | 2070 | #ifndef USG |
d0d6b7c5 JB |
2071 | /* In order to get a controlling terminal on some versions |
2072 | of BSD, it is necessary to put the process in pgrp 0 | |
2073 | before it opens the terminal. */ | |
99c1aeca | 2074 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
2075 | setpgid (0, 0); |
2076 | #else | |
d0d6b7c5 | 2077 | setpgrp (0, 0); |
3ea1d291 | 2078 | #endif |
d0d6b7c5 JB |
2079 | #endif |
2080 | } | |
2081 | #endif /* TIOCNOTTY */ | |
2082 | ||
e39a993c | 2083 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 2084 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
2085 | conditional on TIOCSPGRP, |
2086 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
2087 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
2088 | that system does seem to need this code, even though | |
2089 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
2090 | /* Now close the pty (if we had it open) and reopen it. |
2091 | This makes the pty the controlling terminal of the subprocess. */ | |
2092 | if (pty_flag) | |
2093 | { | |
99e3d726 | 2094 | |
68c45bf0 PE |
2095 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2096 | would work? */ | |
d0d6b7c5 | 2097 | if (xforkin >= 0) |
68c45bf0 PE |
2098 | emacs_close (xforkin); |
2099 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2100 | |
4aa54ba8 RS |
2101 | if (xforkin < 0) |
2102 | { | |
68c45bf0 PE |
2103 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2104 | emacs_write (1, pty_name, strlen (pty_name)); | |
2105 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2106 | _exit (1); |
2107 | } | |
2108 | ||
d0d6b7c5 | 2109 | } |
e39a993c | 2110 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 2111 | |
d0d6b7c5 | 2112 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2113 | if (pty_flag) |
2114 | { | |
2115 | SETUP_SLAVE_PTY; | |
2116 | } | |
d0d6b7c5 JB |
2117 | #endif /* SETUP_SLAVE_PTY */ |
2118 | #ifdef AIX | |
2119 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2120 | Now reenable it in the child, so it will die when we want it to. */ | |
2121 | if (pty_flag) | |
2122 | signal (SIGHUP, SIG_DFL); | |
2123 | #endif | |
2124 | #endif /* HAVE_PTYS */ | |
2125 | ||
0dc70c33 KH |
2126 | signal (SIGINT, SIG_DFL); |
2127 | signal (SIGQUIT, SIG_DFL); | |
2128 | ||
2129 | /* Stop blocking signals in the child. */ | |
2130 | #ifdef POSIX_SIGNALS | |
2131 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2132 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 | 2133 | #ifdef SIGCHLD |
e39a993c | 2134 | #if defined (BSD_SYSTEM) || defined (HPUX) |
d0d6b7c5 JB |
2135 | sigsetmask (SIGEMPTYMASK); |
2136 | #else /* ordinary USG */ | |
63528b78 | 2137 | #if 0 |
d0d6b7c5 | 2138 | signal (SIGCHLD, sigchld); |
63528b78 | 2139 | #endif |
d0d6b7c5 | 2140 | #endif /* ordinary USG */ |
d0d6b7c5 | 2141 | #endif /* SIGCHLD */ |
0dc70c33 | 2142 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2143 | |
e39a993c | 2144 | #if !defined (DONT_REOPEN_PTY) |
ab01d0a8 RS |
2145 | if (pty_flag) |
2146 | child_setup_tty (xforkout); | |
e39a993c | 2147 | #endif /* not DONT_REOPEN_PTY */ |
e98d950b RS |
2148 | #ifdef WINDOWSNT |
2149 | pid = child_setup (xforkin, xforkout, xforkout, | |
2150 | new_argv, 1, current_dir); | |
177c0ea7 | 2151 | #else /* not WINDOWSNT */ |
2c4df143 YM |
2152 | #ifdef FD_CLOEXEC |
2153 | emacs_close (wait_child_setup[0]); | |
2154 | #endif | |
d0d6b7c5 | 2155 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2156 | new_argv, 1, current_dir); |
e98d950b | 2157 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2158 | } |
2159 | environ = save_environ; | |
2160 | } | |
2161 | ||
ececcbec RS |
2162 | UNBLOCK_INPUT; |
2163 | ||
4a127b3b | 2164 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2165 | if (pid < 0) |
6311cf58 RS |
2166 | { |
2167 | if (forkin >= 0) | |
68c45bf0 | 2168 | emacs_close (forkin); |
6311cf58 | 2169 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2170 | emacs_close (forkout); |
6311cf58 | 2171 | } |
4a127b3b KH |
2172 | else |
2173 | { | |
2174 | /* vfork succeeded. */ | |
6bfd98e7 | 2175 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 2176 | |
e98d950b | 2177 | #ifdef WINDOWSNT |
4a127b3b | 2178 | register_child (pid, inchannel); |
e98d950b RS |
2179 | #endif /* WINDOWSNT */ |
2180 | ||
4a127b3b KH |
2181 | /* If the subfork execv fails, and it exits, |
2182 | this close hangs. I don't know why. | |
2183 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2184 | { |
2185 | struct atimer *timer; | |
2186 | EMACS_TIME offset; | |
177c0ea7 | 2187 | |
30904ab7 GM |
2188 | stop_polling (); |
2189 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2190 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2191 | |
30904ab7 GM |
2192 | if (forkin >= 0) |
2193 | emacs_close (forkin); | |
2194 | ||
2195 | cancel_atimer (timer); | |
2196 | start_polling (); | |
2197 | } | |
177c0ea7 | 2198 | |
4a127b3b | 2199 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2200 | emacs_close (forkout); |
d0d6b7c5 | 2201 | |
875e6b94 | 2202 | #ifdef HAVE_PTYS |
4a127b3b KH |
2203 | if (pty_flag) |
2204 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2205 | else | |
875e6b94 | 2206 | #endif |
4a127b3b | 2207 | XPROCESS (process)->tty_name = Qnil; |
2c4df143 YM |
2208 | |
2209 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
2210 | /* Wait for child_setup to complete in case that vfork is | |
2211 | actually defined as fork. The descriptor wait_child_setup[1] | |
2212 | of a pipe is closed at the child side either by close-on-exec | |
2213 | on successful execvp or the _exit call in child_setup. */ | |
2214 | { | |
2215 | char dummy; | |
2216 | ||
2217 | emacs_close (wait_child_setup[1]); | |
2218 | emacs_read (wait_child_setup[0], &dummy, 1); | |
2219 | emacs_close (wait_child_setup[0]); | |
2220 | } | |
2221 | #endif | |
4a127b3b | 2222 | } |
3b9a3dfa | 2223 | |
4a127b3b KH |
2224 | /* Restore the signal state whether vfork succeeded or not. |
2225 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2226 | #ifdef POSIX_SIGNALS |
351e611f | 2227 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2228 | /* Restore the parent's signal handlers. */ |
2229 | sigaction (SIGINT, &sigint_action, 0); | |
2230 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2231 | #ifdef AIX | |
2232 | sigaction (SIGHUP, &sighup_action, 0); | |
2233 | #endif | |
351e611f | 2234 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2235 | /* Stop blocking signals in the parent. */ |
2236 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2237 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 | 2238 | #ifdef SIGCHLD |
e39a993c | 2239 | #if defined (BSD_SYSTEM) || defined (HPUX) |
d0d6b7c5 JB |
2240 | sigsetmask (SIGEMPTYMASK); |
2241 | #else /* ordinary USG */ | |
2242 | #if 0 | |
2243 | signal (SIGCHLD, sigchld); | |
2244 | /* Now really handle any of these signals | |
2245 | that came in during this function. */ | |
2246 | if (sigchld_deferred) | |
2247 | kill (getpid (), SIGCHLD); | |
2248 | #endif | |
2249 | #endif /* ordinary USG */ | |
d0d6b7c5 | 2250 | #endif /* SIGCHLD */ |
0dc70c33 | 2251 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2252 | |
2253 | /* Now generate the error if vfork failed. */ | |
2254 | if (pid < 0) | |
2255 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 2256 | } |
d0d6b7c5 | 2257 | |
e690ca94 | 2258 | \f |
d0d6b7c5 JB |
2259 | #ifdef HAVE_SOCKETS |
2260 | ||
e690ca94 KS |
2261 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2262 | The address family of sa is not included in the result. */ | |
2263 | ||
2264 | static Lisp_Object | |
2265 | conv_sockaddr_to_lisp (sa, len) | |
2266 | struct sockaddr *sa; | |
2267 | int len; | |
2268 | { | |
2269 | Lisp_Object address; | |
2270 | int i; | |
2271 | unsigned char *cp; | |
2272 | register struct Lisp_Vector *p; | |
2273 | ||
2274 | switch (sa->sa_family) | |
2275 | { | |
2276 | case AF_INET: | |
2277 | { | |
2278 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2279 | len = sizeof (sin->sin_addr) + 1; | |
2280 | address = Fmake_vector (make_number (len), Qnil); | |
2281 | p = XVECTOR (address); | |
2282 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
2283 | cp = (unsigned char *)&sin->sin_addr; | |
2284 | break; | |
2285 | } | |
e1652a86 KS |
2286 | #ifdef AF_INET6 |
2287 | case AF_INET6: | |
2288 | { | |
2289 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2290 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2291 | len = sizeof (sin6->sin6_addr)/2 + 1; | |
2292 | address = Fmake_vector (make_number (len), Qnil); | |
2293 | p = XVECTOR (address); | |
2294 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2295 | for (i = 0; i < len; i++) | |
2296 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2297 | return address; | |
2298 | } | |
2299 | #endif | |
e690ca94 KS |
2300 | #ifdef HAVE_LOCAL_SOCKETS |
2301 | case AF_LOCAL: | |
2302 | { | |
fb23673a EZ |
2303 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2304 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2305 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2306 | break; |
fb23673a | 2307 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2308 | } |
2309 | #endif | |
2310 | default: | |
2311 | len -= sizeof (sa->sa_family); | |
2312 | address = Fcons (make_number (sa->sa_family), | |
2313 | Fmake_vector (make_number (len), Qnil)); | |
2314 | p = XVECTOR (XCDR (address)); | |
2315 | cp = (unsigned char *) sa + sizeof (sa->sa_family); | |
2316 | break; | |
2317 | } | |
2318 | ||
2319 | i = 0; | |
2320 | while (i < len) | |
2321 | p->contents[i++] = make_number (*cp++); | |
2322 | ||
2323 | return address; | |
2324 | } | |
2325 | ||
2326 | ||
2327 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2328 | ||
2329 | static int | |
2330 | get_lisp_to_sockaddr_size (address, familyp) | |
2331 | Lisp_Object address; | |
2332 | int *familyp; | |
2333 | { | |
2334 | register struct Lisp_Vector *p; | |
2335 | ||
2336 | if (VECTORP (address)) | |
2337 | { | |
2338 | p = XVECTOR (address); | |
2339 | if (p->size == 5) | |
2340 | { | |
2341 | *familyp = AF_INET; | |
2342 | return sizeof (struct sockaddr_in); | |
2343 | } | |
e1652a86 KS |
2344 | #ifdef AF_INET6 |
2345 | else if (p->size == 9) | |
2346 | { | |
2347 | *familyp = AF_INET6; | |
2348 | return sizeof (struct sockaddr_in6); | |
2349 | } | |
2350 | #endif | |
e690ca94 KS |
2351 | } |
2352 | #ifdef HAVE_LOCAL_SOCKETS | |
2353 | else if (STRINGP (address)) | |
2354 | { | |
2355 | *familyp = AF_LOCAL; | |
2356 | return sizeof (struct sockaddr_un); | |
2357 | } | |
2358 | #endif | |
2359 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2360 | { | |
2361 | struct sockaddr *sa; | |
2362 | *familyp = XINT (XCAR (address)); | |
2363 | p = XVECTOR (XCDR (address)); | |
2364 | return p->size + sizeof (sa->sa_family); | |
2365 | } | |
2366 | return 0; | |
2367 | } | |
2368 | ||
2369 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2370 | |
2371 | The address format has been basically validated by | |
2372 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2373 | it could have come from user data. So if FAMILY is not valid, | |
2374 | we return after zeroing *SA. */ | |
e690ca94 KS |
2375 | |
2376 | static void | |
2377 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2378 | int family; | |
2379 | Lisp_Object address; | |
2380 | struct sockaddr *sa; | |
2381 | int len; | |
2382 | { | |
2383 | register struct Lisp_Vector *p; | |
34967d0f | 2384 | register unsigned char *cp = NULL; |
e690ca94 KS |
2385 | register int i; |
2386 | ||
2387 | bzero (sa, len); | |
e690ca94 KS |
2388 | |
2389 | if (VECTORP (address)) | |
2390 | { | |
2391 | p = XVECTOR (address); | |
2392 | if (family == AF_INET) | |
2393 | { | |
2394 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2395 | len = sizeof (sin->sin_addr) + 1; | |
2396 | i = XINT (p->contents[--len]); | |
2397 | sin->sin_port = htons (i); | |
2398 | cp = (unsigned char *)&sin->sin_addr; | |
9d1a8e5d | 2399 | sa->sa_family = family; |
e690ca94 | 2400 | } |
e1652a86 KS |
2401 | #ifdef AF_INET6 |
2402 | else if (family == AF_INET6) | |
2403 | { | |
2404 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2405 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2406 | len = sizeof (sin6->sin6_addr) + 1; | |
2407 | i = XINT (p->contents[--len]); | |
2408 | sin6->sin6_port = htons (i); | |
2409 | for (i = 0; i < len; i++) | |
2410 | if (INTEGERP (p->contents[i])) | |
2411 | { | |
2412 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2413 | ip6[i] = ntohs (j); | |
2414 | } | |
9d1a8e5d | 2415 | sa->sa_family = family; |
e1652a86 KS |
2416 | } |
2417 | #endif | |
6bf890d7 | 2418 | return; |
e690ca94 KS |
2419 | } |
2420 | else if (STRINGP (address)) | |
2421 | { | |
2422 | #ifdef HAVE_LOCAL_SOCKETS | |
2423 | if (family == AF_LOCAL) | |
2424 | { | |
fb23673a | 2425 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2426 | cp = SDATA (address); |
fb23673a EZ |
2427 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2428 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2429 | sa->sa_family = family; |
e690ca94 KS |
2430 | } |
2431 | #endif | |
2432 | return; | |
2433 | } | |
2434 | else | |
2435 | { | |
2436 | p = XVECTOR (XCDR (address)); | |
2437 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2438 | } | |
2439 | ||
2440 | for (i = 0; i < len; i++) | |
2441 | if (INTEGERP (p->contents[i])) | |
2442 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2443 | } | |
2444 | ||
2445 | #ifdef DATAGRAM_SOCKETS | |
2446 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2447 | 1, 1, 0, | |
2448 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2449 | (process) | |
2450 | Lisp_Object process; | |
2451 | { | |
2452 | int channel; | |
2453 | ||
2454 | CHECK_PROCESS (process); | |
2455 | ||
2456 | if (!DATAGRAM_CONN_P (process)) | |
2457 | return Qnil; | |
2458 | ||
60f0fb11 | 2459 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2460 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2461 | datagram_address[channel].len); | |
2462 | } | |
2463 | ||
2464 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2465 | 2, 2, 0, | |
2466 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2467 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2468 | (process, address) | |
2469 | Lisp_Object process, address; | |
2470 | { | |
2471 | int channel; | |
2472 | int family, len; | |
2473 | ||
2474 | CHECK_PROCESS (process); | |
2475 | ||
2476 | if (!DATAGRAM_CONN_P (process)) | |
2477 | return Qnil; | |
2478 | ||
60f0fb11 | 2479 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2480 | |
2481 | len = get_lisp_to_sockaddr_size (address, &family); | |
2482 | if (datagram_address[channel].len != len) | |
2483 | return Qnil; | |
2484 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2485 | return address; | |
2486 | } | |
2487 | #endif | |
2488 | \f | |
2489 | ||
2490 | static struct socket_options { | |
2491 | /* The name of this option. Should be lowercase version of option | |
177c0ea7 | 2492 | name without SO_ prefix. */ |
e690ca94 | 2493 | char *name; |
e690ca94 KS |
2494 | /* Option level SOL_... */ |
2495 | int optlevel; | |
2496 | /* Option number SO_... */ | |
2497 | int optnum; | |
6b61353c KH |
2498 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2499 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2500 | } socket_options[] = |
2501 | { | |
2502 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2503 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2504 | #endif |
2505 | #ifdef SO_BROADCAST | |
6b61353c | 2506 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2507 | #endif |
2508 | #ifdef SO_DONTROUTE | |
6b61353c | 2509 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2510 | #endif |
2511 | #ifdef SO_KEEPALIVE | |
6b61353c | 2512 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2513 | #endif |
2514 | #ifdef SO_LINGER | |
6b61353c | 2515 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2516 | #endif |
2517 | #ifdef SO_OOBINLINE | |
6b61353c | 2518 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2519 | #endif |
2520 | #ifdef SO_PRIORITY | |
6b61353c | 2521 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2522 | #endif |
2523 | #ifdef SO_REUSEADDR | |
6b61353c | 2524 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2525 | #endif |
6b61353c | 2526 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2527 | }; |
2528 | ||
6b61353c | 2529 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2530 | |
6b61353c KH |
2531 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2532 | Signals an error if setting a known option fails. | |
2533 | */ | |
e690ca94 KS |
2534 | |
2535 | static int | |
6b61353c | 2536 | set_socket_option (s, opt, val) |
e690ca94 | 2537 | int s; |
6b61353c | 2538 | Lisp_Object opt, val; |
e690ca94 | 2539 | { |
6b61353c KH |
2540 | char *name; |
2541 | struct socket_options *sopt; | |
2542 | int ret = 0; | |
e690ca94 | 2543 | |
6b61353c | 2544 | CHECK_SYMBOL (opt); |
e690ca94 | 2545 | |
6b61353c KH |
2546 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2547 | for (sopt = socket_options; sopt->name; sopt++) | |
2548 | if (strcmp (name, sopt->name) == 0) | |
2549 | break; | |
e690ca94 | 2550 | |
6b61353c KH |
2551 | switch (sopt->opttype) |
2552 | { | |
2553 | case SOPT_BOOL: | |
2554 | { | |
2555 | int optval; | |
2556 | optval = NILP (val) ? 0 : 1; | |
2557 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2558 | &optval, sizeof (optval)); | |
2559 | break; | |
2560 | } | |
e690ca94 | 2561 | |
6b61353c KH |
2562 | case SOPT_INT: |
2563 | { | |
2564 | int optval; | |
2565 | if (INTEGERP (val)) | |
2566 | optval = XINT (val); | |
2567 | else | |
2568 | error ("Bad option value for %s", name); | |
2569 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2570 | &optval, sizeof (optval)); | |
2571 | break; | |
2572 | } | |
e690ca94 | 2573 | |
6b61353c KH |
2574 | #ifdef SO_BINDTODEVICE |
2575 | case SOPT_IFNAME: | |
2576 | { | |
2577 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2578 | |
6b61353c KH |
2579 | /* This is broken, at least in the Linux 2.4 kernel. |
2580 | To unbind, the arg must be a zero integer, not the empty string. | |
2581 | This should work on all systems. KFS. 2003-09-23. */ | |
2582 | bzero (devname, sizeof devname); | |
2583 | if (STRINGP (val)) | |
e690ca94 | 2584 | { |
6b61353c KH |
2585 | char *arg = (char *) SDATA (val); |
2586 | int len = min (strlen (arg), IFNAMSIZ); | |
2587 | bcopy (arg, devname, len); | |
e690ca94 | 2588 | } |
6b61353c KH |
2589 | else if (!NILP (val)) |
2590 | error ("Bad option value for %s", name); | |
2591 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2592 | devname, IFNAMSIZ); | |
2593 | break; | |
2594 | } | |
2595 | #endif | |
e690ca94 | 2596 | |
177c0ea7 | 2597 | #ifdef SO_LINGER |
6b61353c KH |
2598 | case SOPT_LINGER: |
2599 | { | |
2600 | struct linger linger; | |
e690ca94 | 2601 | |
6b61353c KH |
2602 | linger.l_onoff = 1; |
2603 | linger.l_linger = 0; | |
2604 | if (INTEGERP (val)) | |
2605 | linger.l_linger = XINT (val); | |
2606 | else | |
2607 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2608 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2609 | &linger, sizeof (linger)); | |
2610 | break; | |
2611 | } | |
e690ca94 | 2612 | #endif |
6b61353c KH |
2613 | |
2614 | default: | |
2615 | return 0; | |
e690ca94 | 2616 | } |
6b61353c KH |
2617 | |
2618 | if (ret < 0) | |
2619 | report_file_error ("Cannot set network option", | |
2620 | Fcons (opt, Fcons (val, Qnil))); | |
2621 | return (1 << sopt->optbit); | |
e690ca94 KS |
2622 | } |
2623 | ||
6b61353c KH |
2624 | |
2625 | DEFUN ("set-network-process-option", | |
2626 | Fset_network_process_option, Sset_network_process_option, | |
2627 | 3, 4, 0, | |
2628 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2629 | See `make-network-process' for a list of options and values. | |
2630 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2631 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2632 | (process, option, value, no_error) | |
2633 | Lisp_Object process, option, value; | |
2634 | Lisp_Object no_error; | |
e690ca94 | 2635 | { |
6b61353c KH |
2636 | int s; |
2637 | struct Lisp_Process *p; | |
e690ca94 | 2638 | |
e690ca94 | 2639 | CHECK_PROCESS (process); |
6b61353c KH |
2640 | p = XPROCESS (process); |
2641 | if (!NETCONN1_P (p)) | |
2642 | error ("Process is not a network process"); | |
2643 | ||
60f0fb11 | 2644 | s = p->infd; |
6b61353c KH |
2645 | if (s < 0) |
2646 | error ("Process is not running"); | |
2647 | ||
2648 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2649 | { |
6b61353c KH |
2650 | p->childp = Fplist_put (p->childp, option, value); |
2651 | return Qt; | |
e690ca94 | 2652 | } |
6b61353c KH |
2653 | |
2654 | if (NILP (no_error)) | |
2655 | error ("Unknown or unsupported option"); | |
2656 | ||
2657 | return Qnil; | |
e690ca94 | 2658 | } |
6b61353c | 2659 | |
e690ca94 | 2660 | \f |
d888760c GM |
2661 | #ifdef HAVE_SERIAL |
2662 | DEFUN ("serial-process-configure", | |
2663 | Fserial_process_configure, | |
2664 | Sserial_process_configure, | |
2665 | 0, MANY, 0, | |
2666 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2667 | ||
2668 | Arguments are specified as keyword/argument pairs. Attributes that | |
2669 | are not given are re-initialized from the process's current | |
2670 | configuration (available via the function `process-contact') or set to | |
2671 | reasonable default values. The following arguments are defined: | |
2672 | ||
2673 | :process PROCESS | |
2674 | :name NAME | |
2675 | :buffer BUFFER | |
2676 | :port PORT | |
2677 | -- Any of these arguments can be given to identify the process that is | |
2678 | to be configured. If none of these arguments is given, the current | |
2679 | buffer's process is used. | |
2680 | ||
2681 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2682 | second, also called baud rate. Any value can be given for SPEED, but | |
2683 | most serial ports work only at a few defined values between 1200 and | |
2684 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2685 | serial port is not configured any further, i.e., all other arguments | |
2686 | are ignored. This may be useful for special serial ports such as | |
2687 | Bluetooth-to-serial converters which can only be configured through AT | |
2688 | commands. A value of nil for SPEED can be used only when passed | |
2689 | through `make-serial-process' or `serial-term'. | |
2690 | ||
2691 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2692 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2693 | ||
2694 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2695 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2696 | PARITY is not given, no parity is used. | |
2697 | ||
2698 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2699 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2700 | is not given or nil, 1 stopbit is used. | |
2701 | ||
2702 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2703 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2704 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2705 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2706 | flowcontrol is used. | |
2707 | ||
2708 | `serial-process-configure' is called by `make-serial-process' for the | |
2709 | initial configuration of the serial port. | |
2710 | ||
2711 | Examples: | |
2712 | ||
2713 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2714 | ||
2715 | \(serial-process-configure | |
2716 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2717 | ||
2718 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2719 | ||
2720 | usage: (serial-process-configure &rest ARGS) */) | |
2721 | (nargs, args) | |
2722 | int nargs; | |
2723 | Lisp_Object *args; | |
2724 | { | |
2725 | struct Lisp_Process *p; | |
2726 | Lisp_Object contact = Qnil; | |
2727 | Lisp_Object proc = Qnil; | |
2728 | struct gcpro gcpro1; | |
2729 | ||
2730 | contact = Flist (nargs, args); | |
2731 | GCPRO1 (contact); | |
2732 | ||
2733 | proc = Fplist_get (contact, QCprocess); | |
2734 | if (NILP (proc)) | |
2735 | proc = Fplist_get (contact, QCname); | |
2736 | if (NILP (proc)) | |
2737 | proc = Fplist_get (contact, QCbuffer); | |
2738 | if (NILP (proc)) | |
2739 | proc = Fplist_get (contact, QCport); | |
2740 | proc = get_process (proc); | |
2741 | p = XPROCESS (proc); | |
a879ee6f | 2742 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2743 | error ("Not a serial process"); |
2744 | ||
2745 | if (NILP (Fplist_get (p->childp, QCspeed))) | |
2746 | { | |
2747 | UNGCPRO; | |
2748 | return Qnil; | |
2749 | } | |
2750 | ||
2751 | serial_configure (p, contact); | |
2752 | ||
2753 | UNGCPRO; | |
2754 | return Qnil; | |
2755 | } | |
d888760c | 2756 | |
d888760c GM |
2757 | /* Used by make-serial-process to recover from errors. */ |
2758 | Lisp_Object make_serial_process_unwind (Lisp_Object proc) | |
2759 | { | |
2760 | if (!PROCESSP (proc)) | |
2761 | abort (); | |
2762 | remove_process (proc); | |
2763 | return Qnil; | |
2764 | } | |
d888760c | 2765 | |
d888760c GM |
2766 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2767 | 0, MANY, 0, | |
2768 | doc: /* Create and return a serial port process. | |
2769 | ||
2770 | In Emacs, serial port connections are represented by process objects, | |
2771 | so input and output work as for subprocesses, and `delete-process' | |
2772 | closes a serial port connection. However, a serial process has no | |
2773 | process id, it cannot be signaled, and the status codes are different | |
2774 | from normal processes. | |
2775 | ||
2776 | `make-serial-process' creates a process and a buffer, on which you | |
2777 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2778 | an interactive terminal. See below for examples. | |
2779 | ||
2780 | Arguments are specified as keyword/argument pairs. The following | |
2781 | arguments are defined: | |
2782 | ||
2783 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2784 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2785 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2786 | the backslashes in strings). | |
2787 | ||
2788 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
2789 | which is called by `make-serial-process'. | |
2790 | ||
2791 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2792 | the value of PORT is used. | |
2793 | ||
2794 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2795 | with the process. Process output goes at the end of that buffer, | |
2796 | unless you specify an output stream or filter function to handle the | |
2797 | output. If BUFFER is not given, the value of NAME is used. | |
2798 | ||
2799 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2800 | system used for both reading and writing for this process. If CODING | |
2801 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2802 | ENCODING is used for writing. | |
2803 | ||
2804 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2805 | the process is running. If BOOL is not given, query before exiting. | |
2806 | ||
2807 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2808 | In the stopped state, a serial process does not accept incoming data, | |
2809 | but you can send outgoing data. The stopped state is cleared by | |
2810 | `continue-process' and set by `stop-process'. | |
2811 | ||
2812 | :filter FILTER -- Install FILTER as the process filter. | |
2813 | ||
2814 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2815 | ||
2816 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2817 | ||
2818 | :speed | |
2819 | :bytesize | |
2820 | :parity | |
2821 | :stopbits | |
2822 | :flowcontrol | |
2823 | -- These arguments are handled by `serial-process-configure', which is | |
2824 | called by `make-serial-process'. | |
2825 | ||
2826 | The original argument list, possibly modified by later configuration, | |
2827 | is available via the function `process-contact'. | |
2828 | ||
2829 | Examples: | |
2830 | ||
2831 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2832 | ||
2833 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2834 | ||
2835 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2836 | ||
2837 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2838 | ||
2839 | usage: (make-serial-process &rest ARGS) */) | |
2840 | (nargs, args) | |
2841 | int nargs; | |
2842 | Lisp_Object *args; | |
2843 | { | |
2844 | int fd = -1; | |
2845 | Lisp_Object proc, contact, port; | |
2846 | struct Lisp_Process *p; | |
2847 | struct gcpro gcpro1; | |
2848 | Lisp_Object name, buffer; | |
2849 | Lisp_Object tem, val; | |
2850 | int specpdl_count = -1; | |
2851 | ||
2852 | if (nargs == 0) | |
2853 | return Qnil; | |
2854 | ||
2855 | contact = Flist (nargs, args); | |
2856 | GCPRO1 (contact); | |
2857 | ||
2858 | port = Fplist_get (contact, QCport); | |
2859 | if (NILP (port)) | |
2860 | error ("No port specified"); | |
2861 | CHECK_STRING (port); | |
2862 | ||
2863 | if (NILP (Fplist_member (contact, QCspeed))) | |
2864 | error (":speed not specified"); | |
2865 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2866 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2867 | ||
2868 | name = Fplist_get (contact, QCname); | |
2869 | if (NILP (name)) | |
2870 | name = port; | |
2871 | CHECK_STRING (name); | |
2872 | proc = make_process (name); | |
2873 | specpdl_count = SPECPDL_INDEX (); | |
2874 | record_unwind_protect (make_serial_process_unwind, proc); | |
2875 | p = XPROCESS (proc); | |
2876 | ||
2877 | fd = serial_open ((char*) SDATA (port)); | |
2878 | p->infd = fd; | |
2879 | p->outfd = fd; | |
2880 | if (fd > max_process_desc) | |
2881 | max_process_desc = fd; | |
2882 | chan_process[fd] = proc; | |
2883 | ||
2884 | buffer = Fplist_get (contact, QCbuffer); | |
2885 | if (NILP (buffer)) | |
2886 | buffer = name; | |
2887 | buffer = Fget_buffer_create (buffer); | |
2888 | p->buffer = buffer; | |
2889 | ||
2890 | p->childp = contact; | |
2891 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); | |
2892 | p->type = Qserial; | |
2893 | p->sentinel = Fplist_get (contact, QCsentinel); | |
2894 | p->filter = Fplist_get (contact, QCfilter); | |
2895 | p->log = Qnil; | |
2896 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
2897 | p->kill_without_query = 1; | |
2898 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
2899 | p->command = Qt; | |
2900 | p->pty_flag = 0; | |
2901 | ||
2902 | if (!EQ (p->command, Qt)) | |
2903 | { | |
2904 | FD_SET (fd, &input_wait_mask); | |
2905 | FD_SET (fd, &non_keyboard_wait_mask); | |
2906 | } | |
2907 | ||
2908 | if (BUFFERP (buffer)) | |
2909 | { | |
2910 | set_marker_both (p->mark, buffer, | |
2911 | BUF_ZV (XBUFFER (buffer)), | |
2912 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2913 | } | |
2914 | ||
2915 | tem = Fplist_member (contact, QCcoding); | |
2916 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2917 | tem = Qnil; | |
2918 | ||
2919 | val = Qnil; | |
2920 | if (!NILP (tem)) | |
2921 | { | |
2922 | val = XCAR (XCDR (tem)); | |
2923 | if (CONSP (val)) | |
2924 | val = XCAR (val); | |
2925 | } | |
2926 | else if (!NILP (Vcoding_system_for_read)) | |
2927 | val = Vcoding_system_for_read; | |
2928 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) | |
2929 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
2930 | val = Qnil; | |
2931 | p->decode_coding_system = val; | |
2932 | ||
2933 | val = Qnil; | |
2934 | if (!NILP (tem)) | |
2935 | { | |
2936 | val = XCAR (XCDR (tem)); | |
2937 | if (CONSP (val)) | |
2938 | val = XCDR (val); | |
2939 | } | |
2940 | else if (!NILP (Vcoding_system_for_write)) | |
2941 | val = Vcoding_system_for_write; | |
2942 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) | |
2943 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
2944 | val = Qnil; | |
2945 | p->encode_coding_system = val; | |
2946 | ||
2947 | setup_process_coding_systems (proc); | |
2948 | p->decoding_buf = make_uninit_string (0); | |
2949 | p->decoding_carryover = 0; | |
2950 | p->encoding_buf = make_uninit_string (0); | |
2951 | p->inherit_coding_system_flag | |
2952 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2953 | ||
2954 | Fserial_process_configure(nargs, args); | |
2955 | ||
2956 | specpdl_ptr = specpdl + specpdl_count; | |
2957 | ||
2958 | UNGCPRO; | |
2959 | return proc; | |
2960 | } | |
2961 | #endif /* HAVE_SERIAL */ | |
2962 | ||
e690ca94 KS |
2963 | /* Create a network stream/datagram client/server process. Treated |
2964 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2965 | differences are in status display and process deletion. A network |
2966 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2967 | stop/continue it and deactivate/close it via delete-process */ |
2968 | ||
177c0ea7 JB |
2969 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2970 | 0, MANY, 0, | |
e690ca94 KS |
2971 | doc: /* Create and return a network server or client process. |
2972 | ||
fa9d4315 | 2973 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2974 | input and output work as for subprocesses and `delete-process' closes |
2975 | a network connection. However, a network process has no process id, | |
d22426e1 | 2976 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2977 | processes. |
2978 | ||
2979 | Arguments are specified as keyword/argument pairs. The following | |
2980 | arguments are defined: | |
2981 | ||
2982 | :name NAME -- NAME is name for process. It is modified if necessary | |
2983 | to make it unique. | |
2984 | ||
2985 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2986 | with the process. Process output goes at end of that buffer, unless | |
2987 | you specify an output stream or filter function to handle the output. | |
2988 | BUFFER may be also nil, meaning that this process is not associated | |
2989 | with any buffer. | |
2990 | ||
2991 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2992 | address. The symbol `local' specifies the local host. If specified | |
2993 | for a server process, it must be a valid name or address for the local | |
2994 | host, and only clients connecting to that address will be accepted. | |
2995 | ||
2996 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2997 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2998 | a random port number is selected for the server. (If Emacs was |
2999 | compiled with getaddrinfo, a port number can also be specified as a | |
3000 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 3001 | |
9057ff80 KS |
3002 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
3003 | stream type connection, `datagram' creates a datagram type connection. | |
3004 | ||
e690ca94 | 3005 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
3006 | service specified by HOST and SERVICE. The default (nil) is to use |
3007 | whatever address family (IPv4 or IPv6) that is defined for the host | |
3008 | and port number specified by HOST and SERVICE. Other address families | |
3009 | supported are: | |
e690ca94 | 3010 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
3011 | ipv4 -- use IPv4 address family only. |
3012 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
3013 | |
3014 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
3015 | This parameter is ignored when opening a client process. When specified | |
3016 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
3017 | ||
3018 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
3019 | connection. This parameter is ignored when opening a stream server | |
3020 | process. For a datagram server process, it specifies the initial | |
3021 | setting of the remote datagram address. When specified for a client | |
3022 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
3023 | ||
3024 | The format of ADDRESS depends on the address family: | |
3025 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
3026 | corresponding to numeric IP address A.B.C.D and port number P. | |
3027 | - A local address is represented as a string with the address in the | |
3028 | local address space. | |
3029 | - An "unsupported family" address is represented by a cons (F . AV) | |
3030 | where F is the family number and AV is a vector containing the socket | |
3031 | address data with one element per address data byte. Do not rely on | |
3032 | this format in portable code, as it may depend on implementation | |
3033 | defined constants, data sizes, and data structure alignment. | |
3034 | ||
6b61353c KH |
3035 | :coding CODING -- If CODING is a symbol, it specifies the coding |
3036 | system used for both reading and writing for this process. If CODING | |
3037 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
3038 | ENCODING is used for writing. | |
e690ca94 KS |
3039 | |
3040 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
3041 | return without waiting for the connection to complete; instead, the | |
3042 | sentinel function will be called with second arg matching "open" (if | |
3043 | successful) or "failed" when the connect completes. Default is to use | |
3044 | a blocking connect (i.e. wait) for stream type connections. | |
3045 | ||
3046 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 3047 | running when Emacs is exited. |
e690ca94 KS |
3048 | |
3049 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
3050 | In the stopped state, a server process does not accept new | |
3051 | connections, and a client process does not handle incoming traffic. | |
3052 | The stopped state is cleared by `continue-process' and set by | |
3053 | `stop-process'. | |
3054 | ||
3055 | :filter FILTER -- Install FILTER as the process filter. | |
3056 | ||
7392e23c KS |
3057 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
3058 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 3059 | If this keyword is not specified, the strings are multibyte if |
03f04413 KH |
3060 | `default-enable-multibyte-characters' is non-nil. |
3061 | ||
e690ca94 KS |
3062 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
3063 | ||
3064 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 3065 | function is called when the server accepts a network connection from a |
e690ca94 KS |
3066 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
3067 | is the server process, CLIENT is the new process for the connection, | |
3068 | and MESSAGE is a string. | |
3069 | ||
faa7db08 | 3070 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 3071 | |
6b61353c | 3072 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 3073 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
3074 | If QLEN is an integer, it is used as the max. length of the server's |
3075 | pending connection queue (also known as the backlog); the default | |
3076 | queue length is 5. Default is to create a client process. | |
3077 | ||
3078 | The following network options can be specified for this connection: | |
3079 | ||
3080 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
3081 | :dontroute BOOL -- Only send to directly connected hosts. | |
3082 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
3083 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
3084 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
3085 | :priority INT -- Set protocol defined priority for sent packets. | |
3086 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
3087 | (this is allowed by default for a server process). | |
3088 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
3089 | special privileges on some systems. | |
3090 | ||
3091 | Consult the relevant system programmer's manual pages for more | |
3092 | information on using these options. | |
3093 | ||
3094 | ||
3095 | A server process will listen for and accept connections from clients. | |
3096 | When a client connection is accepted, a new network process is created | |
3097 | for the connection with the following parameters: | |
e690ca94 | 3098 | |
e690ca94 KS |
3099 | - The client's process name is constructed by concatenating the server |
3100 | process' NAME and a client identification string. | |
3101 | - If the FILTER argument is non-nil, the client process will not get a | |
3102 | separate process buffer; otherwise, the client's process buffer is a newly | |
3103 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 3104 | NAME concatenated with the client identification string. |
e690ca94 KS |
3105 | - The connection type and the process filter and sentinel parameters are |
3106 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
3107 | - The client process' contact info is set according to the client's | |
3108 | addressing information (typically an IP address and a port number). | |
faa7db08 | 3109 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
3110 | |
3111 | Notice that the FILTER and SENTINEL args are never used directly by | |
3112 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
3113 | the server process, but via the optional :log function, accepted (and |
3114 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 3115 | |
365aee82 KS |
3116 | The original argument list, modified with the actual connection |
3117 | information, is available via the `process-contact' function. | |
365aee82 | 3118 | |
fa9d4315 | 3119 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
3120 | (nargs, args) |
3121 | int nargs; | |
3122 | Lisp_Object *args; | |
d0d6b7c5 JB |
3123 | { |
3124 | Lisp_Object proc; | |
e690ca94 KS |
3125 | Lisp_Object contact; |
3126 | struct Lisp_Process *p; | |
70dbdb36 | 3127 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3128 | struct addrinfo ai, *res, *lres; |
e1652a86 KS |
3129 | struct addrinfo hints; |
3130 | char *portstring, portbuf[128]; | |
70dbdb36 | 3131 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
3132 | struct _emacs_addrinfo |
3133 | { | |
3134 | int ai_family; | |
3135 | int ai_socktype; | |
3136 | int ai_protocol; | |
3137 | int ai_addrlen; | |
3138 | struct sockaddr *ai_addr; | |
3139 | struct _emacs_addrinfo *ai_next; | |
3140 | } ai, *res, *lres; | |
418b48fd | 3141 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
3142 | struct sockaddr_in address_in; |
3143 | #ifdef HAVE_LOCAL_SOCKETS | |
3144 | struct sockaddr_un address_un; | |
3145 | #endif | |
3146 | int port; | |
dd2a17ab KS |
3147 | int ret = 0; |
3148 | int xerrno = 0; | |
418b48fd | 3149 | int s = -1, outch, inch; |
e690ca94 | 3150 | struct gcpro gcpro1; |
aed13378 | 3151 | int count = SPECPDL_INDEX (); |
5684cd6e | 3152 | int count1; |
e690ca94 KS |
3153 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
3154 | Lisp_Object tem; | |
3155 | Lisp_Object name, buffer, host, service, address; | |
3156 | Lisp_Object filter, sentinel; | |
3157 | int is_non_blocking_client = 0; | |
6b61353c | 3158 | int is_server = 0, backlog = 5; |
9057ff80 | 3159 | int socktype; |
e690ca94 KS |
3160 | int family = -1; |
3161 | ||
3162 | if (nargs == 0) | |
3163 | return Qnil; | |
dd2a17ab | 3164 | |
e690ca94 KS |
3165 | /* Save arguments for process-contact and clone-process. */ |
3166 | contact = Flist (nargs, args); | |
3167 | GCPRO1 (contact); | |
3168 | ||
bff3ed0a RS |
3169 | #ifdef WINDOWSNT |
3170 | /* Ensure socket support is loaded if available. */ | |
3171 | init_winsock (TRUE); | |
3172 | #endif | |
3173 | ||
9057ff80 KS |
3174 | /* :type TYPE (nil: stream, datagram */ |
3175 | tem = Fplist_get (contact, QCtype); | |
3176 | if (NILP (tem)) | |
3177 | socktype = SOCK_STREAM; | |
3178 | #ifdef DATAGRAM_SOCKETS | |
3179 | else if (EQ (tem, Qdatagram)) | |
3180 | socktype = SOCK_DGRAM; | |
e690ca94 | 3181 | #endif |
9057ff80 KS |
3182 | else |
3183 | error ("Unsupported connection type"); | |
e690ca94 KS |
3184 | |
3185 | /* :server BOOL */ | |
3186 | tem = Fplist_get (contact, QCserver); | |
3187 | if (!NILP (tem)) | |
3188 | { | |
75728599 JR |
3189 | /* Don't support network sockets when non-blocking mode is |
3190 | not available, since a blocked Emacs is not useful. */ | |
132d0475 | 3191 | #if !defined(O_NONBLOCK) && !defined(O_NDELAY) |
e690ca94 KS |
3192 | error ("Network servers not supported"); |
3193 | #else | |
3194 | is_server = 1; | |
6b61353c KH |
3195 | if (INTEGERP (tem)) |
3196 | backlog = XINT (tem); | |
e690ca94 KS |
3197 | #endif |
3198 | } | |
3199 | ||
3200 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
3201 | QCaddress = is_server ? QClocal : QCremote; | |
3202 | ||
d7e344cd | 3203 | /* :nowait BOOL */ |
e690ca94 KS |
3204 | if (!is_server && socktype == SOCK_STREAM |
3205 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) | |
3206 | { | |
3207 | #ifndef NON_BLOCKING_CONNECT | |
3208 | error ("Non-blocking connect not supported"); | |
3209 | #else | |
3210 | is_non_blocking_client = 1; | |
3211 | #endif | |
3212 | } | |
3213 | ||
3214 | name = Fplist_get (contact, QCname); | |
3215 | buffer = Fplist_get (contact, QCbuffer); | |
3216 | filter = Fplist_get (contact, QCfilter); | |
3217 | sentinel = Fplist_get (contact, QCsentinel); | |
3218 | ||
b7826503 | 3219 | CHECK_STRING (name); |
e690ca94 | 3220 | |
e690ca94 KS |
3221 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
3222 | ai.ai_socktype = socktype; | |
3223 | ai.ai_protocol = 0; | |
3224 | ai.ai_next = NULL; | |
3225 | res = &ai; | |
a319f7c1 | 3226 | |
e690ca94 KS |
3227 | /* :local ADDRESS or :remote ADDRESS */ |
3228 | address = Fplist_get (contact, QCaddress); | |
3229 | if (!NILP (address)) | |
a319f7c1 | 3230 | { |
e690ca94 KS |
3231 | host = service = Qnil; |
3232 | ||
3233 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
3234 | error ("Malformed :address"); | |
3235 | ai.ai_family = family; | |
3236 | ai.ai_addr = alloca (ai.ai_addrlen); | |
3237 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
3238 | goto open_socket; | |
a319f7c1 | 3239 | } |
e690ca94 KS |
3240 | |
3241 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
3242 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 3243 | if (NILP (tem)) |
a319f7c1 | 3244 | { |
87b6ca8d | 3245 | #if defined(HAVE_GETADDRINFO) && defined(AF_INET6) |
e1652a86 KS |
3246 | family = AF_UNSPEC; |
3247 | #else | |
3248 | family = AF_INET; | |
e690ca94 | 3249 | #endif |
a319f7c1 | 3250 | } |
e1652a86 KS |
3251 | #ifdef HAVE_LOCAL_SOCKETS |
3252 | else if (EQ (tem, Qlocal)) | |
3253 | family = AF_LOCAL; | |
3254 | #endif | |
3255 | #ifdef AF_INET6 | |
3256 | else if (EQ (tem, Qipv6)) | |
3257 | family = AF_INET6; | |
3258 | #endif | |
3259 | else if (EQ (tem, Qipv4)) | |
3260 | family = AF_INET; | |
3261 | else if (INTEGERP (tem)) | |
3262 | family = XINT (tem); | |
3263 | else | |
e690ca94 | 3264 | error ("Unknown address family"); |
e1652a86 | 3265 | |
e690ca94 KS |
3266 | ai.ai_family = family; |
3267 | ||
3268 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3269 | service = Fplist_get (contact, QCservice); | |
3270 | ||
3271 | #ifdef HAVE_LOCAL_SOCKETS | |
3272 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3273 | { |
e690ca94 KS |
3274 | /* Host is not used. */ |
3275 | host = Qnil; | |
b7826503 | 3276 | CHECK_STRING (service); |
e690ca94 KS |
3277 | bzero (&address_un, sizeof address_un); |
3278 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 3279 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
3280 | ai.ai_addr = (struct sockaddr *) &address_un; |
3281 | ai.ai_addrlen = sizeof address_un; | |
3282 | goto open_socket; | |
d0d6b7c5 | 3283 | } |
e690ca94 | 3284 | #endif |
a319f7c1 | 3285 | |
e690ca94 KS |
3286 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3287 | host = Fplist_get (contact, QChost); | |
3288 | if (!NILP (host)) | |
3289 | { | |
3290 | if (EQ (host, Qlocal)) | |
3291 | host = build_string ("localhost"); | |
3292 | CHECK_STRING (host); | |
3293 | } | |
d0d6b7c5 | 3294 | |
798b64bb KH |
3295 | /* Slow down polling to every ten seconds. |
3296 | Some kernels have a bug which causes retrying connect to fail | |
3297 | after a connect. Polling can interfere with gethostbyname too. */ | |
3298 | #ifdef POLL_FOR_INPUT | |
e690ca94 KS |
3299 | if (socktype == SOCK_STREAM) |
3300 | { | |
3301 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3302 | bind_polling_period (10); | |
3303 | } | |
798b64bb KH |
3304 | #endif |
3305 | ||
a319f7c1 | 3306 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3307 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3308 | Otherwise, use getservbyname to lookup the service. */ | |
3309 | if (!NILP (host)) | |
3310 | { | |
3311 | ||
3312 | /* SERVICE can either be a string or int. | |
3313 | Convert to a C string for later use by getaddrinfo. */ | |
3314 | if (EQ (service, Qt)) | |
3315 | portstring = "0"; | |
3316 | else if (INTEGERP (service)) | |
3317 | { | |
3318 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
3319 | portstring = portbuf; | |
3320 | } | |
3321 | else | |
3322 | { | |
3323 | CHECK_STRING (service); | |
d5db4077 | 3324 | portstring = SDATA (service); |
e690ca94 KS |
3325 | } |
3326 | ||
3327 | immediate_quit = 1; | |
3328 | QUIT; | |
3329 | memset (&hints, 0, sizeof (hints)); | |
3330 | hints.ai_flags = 0; | |
e1652a86 | 3331 | hints.ai_family = family; |
e690ca94 KS |
3332 | hints.ai_socktype = socktype; |
3333 | hints.ai_protocol = 0; | |
08116b48 CY |
3334 | |
3335 | #ifdef HAVE_RES_INIT | |
3336 | res_init (); | |
3337 | #endif | |
3338 | ||
d5db4077 | 3339 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 3340 | if (ret) |
f6270f62 | 3341 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 3342 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 3343 | #else |
d5db4077 | 3344 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 3345 | #endif |
e690ca94 | 3346 | immediate_quit = 0; |
a319f7c1 | 3347 | |
e690ca94 KS |
3348 | goto open_socket; |
3349 | } | |
3350 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3351 | |
e690ca94 KS |
3352 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3353 | has been specified (e.g. for a local server process). */ | |
3354 | ||
3355 | if (EQ (service, Qt)) | |
3356 | port = 0; | |
3357 | else if (INTEGERP (service)) | |
3358 | port = htons ((unsigned short) XINT (service)); | |
3359 | else | |
616da37c | 3360 | { |
e690ca94 KS |
3361 | struct servent *svc_info; |
3362 | CHECK_STRING (service); | |
177c0ea7 | 3363 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
3364 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3365 | if (svc_info == 0) | |
d5db4077 | 3366 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3367 | port = svc_info->s_port; |
3368 | } | |
3369 | ||
3370 | bzero (&address_in, sizeof address_in); | |
3371 | address_in.sin_family = family; | |
3372 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3373 | address_in.sin_port = port; | |
3374 | ||
3375 | #ifndef HAVE_GETADDRINFO | |
3376 | if (!NILP (host)) | |
3377 | { | |
3378 | struct hostent *host_info_ptr; | |
3379 | ||
3380 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 3381 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3382 | immediate_quit = 1; |
3383 | QUIT; | |
08116b48 CY |
3384 | |
3385 | #ifdef HAVE_RES_INIT | |
3386 | res_init (); | |
3387 | #endif | |
3388 | ||
d5db4077 | 3389 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3390 | immediate_quit = 0; |
177c0ea7 | 3391 | |
e690ca94 KS |
3392 | if (host_info_ptr) |
3393 | { | |
3394 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
3395 | host_info_ptr->h_length); | |
3396 | family = host_info_ptr->h_addrtype; | |
3397 | address_in.sin_family = family; | |
3398 | } | |
3399 | else | |
3400 | /* Attempt to interpret host as numeric inet address */ | |
3401 | { | |
4624371d | 3402 | unsigned long numeric_addr; |
d5db4077 | 3403 | numeric_addr = inet_addr ((char *) SDATA (host)); |
4624371d | 3404 | if (numeric_addr == -1) |
d5db4077 | 3405 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3406 | |
e690ca94 KS |
3407 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
3408 | sizeof (address_in.sin_addr)); | |
3409 | } | |
d0d6b7c5 | 3410 | |
e690ca94 | 3411 | } |
dd2a17ab | 3412 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3413 | |
e690ca94 KS |
3414 | ai.ai_family = family; |
3415 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3416 | ai.ai_addrlen = sizeof address_in; | |
3417 | ||
3418 | open_socket: | |
3419 | ||
dd2a17ab | 3420 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3421 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3422 | s = -1; |
457a9bee | 3423 | |
dd2a17ab KS |
3424 | for (lres = res; lres; lres = lres->ai_next) |
3425 | { | |
6b61353c KH |
3426 | int optn, optbits; |
3427 | ||
4e9dd03b KS |
3428 | retry_connect: |
3429 | ||
dd2a17ab KS |
3430 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3431 | if (s < 0) | |
3432 | { | |
3433 | xerrno = errno; | |
3434 | continue; | |
3435 | } | |
0f2ee0c1 | 3436 | |
e690ca94 KS |
3437 | #ifdef DATAGRAM_SOCKETS |
3438 | if (!is_server && socktype == SOCK_DGRAM) | |
3439 | break; | |
3440 | #endif /* DATAGRAM_SOCKETS */ | |
3441 | ||
dd2a17ab | 3442 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3443 | if (is_non_blocking_client) |
dd2a17ab KS |
3444 | { |
3445 | #ifdef O_NONBLOCK | |
3446 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3447 | #else | |
3448 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3449 | #endif | |
3450 | if (ret < 0) | |
3451 | { | |
3452 | xerrno = errno; | |
3453 | emacs_close (s); | |
3454 | s = -1; | |
3455 | continue; | |
3456 | } | |
3457 | } | |
3458 | #endif | |
177c0ea7 | 3459 | |
dd2a17ab | 3460 | /* Make us close S if quit. */ |
dd2a17ab KS |
3461 | record_unwind_protect (close_file_unwind, make_number (s)); |
3462 | ||
6b61353c KH |
3463 | /* Parse network options in the arg list. |
3464 | We simply ignore anything which isn't a known option (including other keywords). | |
04bf5b65 | 3465 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3466 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3467 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3468 | ||
e690ca94 KS |
3469 | if (is_server) |
3470 | { | |
3471 | /* Configure as a server socket. */ | |
6b61353c KH |
3472 | |
3473 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3474 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3475 | #ifdef HAVE_LOCAL_SOCKETS |
3476 | if (family != AF_LOCAL) | |
3477 | #endif | |
6b61353c KH |
3478 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3479 | { | |
3480 | int optval = 1; | |
3481 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3482 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3483 | } | |
177c0ea7 | 3484 | |
e690ca94 KS |
3485 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3486 | report_file_error ("Cannot bind server socket", Qnil); | |
3487 | ||
3488 | #ifdef HAVE_GETSOCKNAME | |
3489 | if (EQ (service, Qt)) | |
3490 | { | |
3491 | struct sockaddr_in sa1; | |
3492 | int len1 = sizeof (sa1); | |
3493 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3494 | { | |
3495 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3496 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3497 | contact = Fplist_put (contact, QCservice, service); |
3498 | } | |
3499 | } | |
3500 | #endif | |
3501 | ||
6b61353c | 3502 | if (socktype == SOCK_STREAM && listen (s, backlog)) |
e690ca94 KS |
3503 | report_file_error ("Cannot listen on server socket", Qnil); |
3504 | ||
3505 | break; | |
3506 | } | |
3507 | ||
dd2a17ab KS |
3508 | immediate_quit = 1; |
3509 | QUIT; | |
3510 | ||
3511 | /* This turns off all alarm-based interrupts; the | |
3512 | bind_polling_period call above doesn't always turn all the | |
3513 | short-interval ones off, especially if interrupt_input is | |
3514 | set. | |
3515 | ||
3516 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3517 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3518 | |
3519 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3520 | ||
f40f9848 | 3521 | turn_on_atimers (0); |
dd2a17ab KS |
3522 | |
3523 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3524 | xerrno = errno; | |
3525 | ||
f40f9848 | 3526 | turn_on_atimers (1); |
dd2a17ab KS |
3527 | |
3528 | if (ret == 0 || xerrno == EISCONN) | |
3529 | { | |
dd2a17ab KS |
3530 | /* The unwind-protect will be discarded afterwards. |
3531 | Likewise for immediate_quit. */ | |
3532 | break; | |
3533 | } | |
3534 | ||
3535 | #ifdef NON_BLOCKING_CONNECT | |
3536 | #ifdef EINPROGRESS | |
e690ca94 | 3537 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3538 | break; |
3539 | #else | |
3540 | #ifdef EWOULDBLOCK | |
e690ca94 | 3541 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3542 | break; |
3543 | #endif | |
3544 | #endif | |
3545 | #endif | |
e333e864 | 3546 | |
0f2ee0c1 RS |
3547 | immediate_quit = 0; |
3548 | ||
dd2a17ab | 3549 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3550 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3551 | emacs_close (s); |
dd2a17ab | 3552 | s = -1; |
4e9dd03b KS |
3553 | |
3554 | if (xerrno == EINTR) | |
3555 | goto retry_connect; | |
dd2a17ab | 3556 | } |
457a9bee | 3557 | |
e690ca94 KS |
3558 | if (s >= 0) |
3559 | { | |
3560 | #ifdef DATAGRAM_SOCKETS | |
3561 | if (socktype == SOCK_DGRAM) | |
3562 | { | |
3563 | if (datagram_address[s].sa) | |
3564 | abort (); | |
3565 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3566 | datagram_address[s].len = lres->ai_addrlen; | |
3567 | if (is_server) | |
3568 | { | |
3569 | Lisp_Object remote; | |
3570 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3571 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3572 | { | |
3573 | int rfamily, rlen; | |
3574 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3575 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3576 | conv_lisp_to_sockaddr (rfamily, remote, | |
3577 | datagram_address[s].sa, rlen); | |
3578 | } | |
3579 | } | |
3580 | else | |
3581 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3582 | } | |
3583 | #endif | |
177c0ea7 | 3584 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3585 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3586 | #ifdef HAVE_GETSOCKNAME |
3587 | if (!is_server) | |
3588 | { | |
3589 | struct sockaddr_in sa1; | |
3590 | int len1 = sizeof (sa1); | |
3591 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3592 | contact = Fplist_put (contact, QClocal, | |
3593 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3594 | } | |
3595 | #endif | |
e690ca94 KS |
3596 | } |
3597 | ||
54b3b62f YM |
3598 | immediate_quit = 0; |
3599 | ||
dd2a17ab | 3600 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3601 | if (res != &ai) |
54b3b62f YM |
3602 | { |
3603 | BLOCK_INPUT; | |
3604 | freeaddrinfo (res); | |
3605 | UNBLOCK_INPUT; | |
3606 | } | |
dd2a17ab KS |
3607 | #endif |
3608 | ||
e690ca94 KS |
3609 | /* Discard the unwind protect for closing S, if any. */ |
3610 | specpdl_ptr = specpdl + count1; | |
3611 | ||
3612 | /* Unwind bind_polling_period and request_sigio. */ | |
3613 | unbind_to (count, Qnil); | |
3614 | ||
dd2a17ab KS |
3615 | if (s < 0) |
3616 | { | |
dd2a17ab KS |
3617 | /* If non-blocking got this far - and failed - assume non-blocking is |
3618 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3619 | the normal blocking calls to open-network-stream handles this error |
3620 | better. */ | |
3621 | if (is_non_blocking_client) | |
dd2a17ab | 3622 | return Qnil; |
dd2a17ab | 3623 | |
d0d6b7c5 | 3624 | errno = xerrno; |
e690ca94 KS |
3625 | if (is_server) |
3626 | report_file_error ("make server process failed", contact); | |
3627 | else | |
3628 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3629 | } |
44ade2e9 | 3630 | |
d0d6b7c5 | 3631 | inch = s; |
59f23005 | 3632 | outch = s; |
d0d6b7c5 JB |
3633 | |
3634 | if (!NILP (buffer)) | |
3635 | buffer = Fget_buffer_create (buffer); | |
3636 | proc = make_process (name); | |
3637 | ||
3638 | chan_process[inch] = proc; | |
3639 | ||
3640 | #ifdef O_NONBLOCK | |
3641 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3642 | #else | |
3643 | #ifdef O_NDELAY | |
3644 | fcntl (inch, F_SETFL, O_NDELAY); | |
3645 | #endif | |
3646 | #endif | |
3647 | ||
e690ca94 KS |
3648 | p = XPROCESS (proc); |
3649 | ||
3650 | p->childp = contact; | |
faa7db08 | 3651 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
d888760c | 3652 | p->type = Qnetwork; |
177c0ea7 | 3653 | |
e690ca94 KS |
3654 | p->buffer = buffer; |
3655 | p->sentinel = sentinel; | |
3656 | p->filter = filter; | |
3657 | p->log = Fplist_get (contact, QClog); | |
3658 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
60f0fb11 | 3659 | p->kill_without_query = 1; |
e690ca94 KS |
3660 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
3661 | p->command = Qt; | |
6bfd98e7 | 3662 | p->pid = 0; |
60f0fb11 SM |
3663 | p->infd = inch; |
3664 | p->outfd = outch; | |
e690ca94 KS |
3665 | if (is_server && socktype == SOCK_STREAM) |
3666 | p->status = Qlisten; | |
dd2a17ab | 3667 | |
f523e0c3 SM |
3668 | /* Make the process marker point into the process buffer (if any). */ |
3669 | if (BUFFERP (buffer)) | |
3670 | set_marker_both (p->mark, buffer, | |
3671 | BUF_ZV (XBUFFER (buffer)), | |
3672 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3673 | ||
dd2a17ab | 3674 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3675 | if (is_non_blocking_client) |
dd2a17ab KS |
3676 | { |
3677 | /* We may get here if connect did succeed immediately. However, | |
3678 | in that case, we still need to signal this like a non-blocking | |
3679 | connection. */ | |
e690ca94 | 3680 | p->status = Qconnect; |
dd2a17ab KS |
3681 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3682 | { | |
3683 | FD_SET (inch, &connect_wait_mask); | |
3684 | num_pending_connects++; | |
3685 | } | |
3686 | } | |
3687 | else | |
3688 | #endif | |
e690ca94 KS |
3689 | /* A server may have a client filter setting of Qt, but it must |
3690 | still listen for incoming connects unless it is stopped. */ | |
3691 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3692 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3693 | { |
3694 | FD_SET (inch, &input_wait_mask); | |
3695 | FD_SET (inch, &non_keyboard_wait_mask); | |
3696 | } | |
3697 | ||
7d0e672e RS |
3698 | if (inch > max_process_desc) |
3699 | max_process_desc = inch; | |
d0d6b7c5 | 3700 | |
e690ca94 KS |
3701 | tem = Fplist_member (contact, QCcoding); |
3702 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3703 | tem = Qnil; /* No error message (too late!). */ | |
3704 | ||
67918941 RS |
3705 | { |
3706 | /* Setup coding systems for communicating with the network stream. */ | |
3707 | struct gcpro gcpro1; | |
3708 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3709 | Lisp_Object coding_systems = Qt; | |
3710 | Lisp_Object args[5], val; | |
3711 | ||
e690ca94 | 3712 | if (!NILP (tem)) |
6b61353c KH |
3713 | { |
3714 | val = XCAR (XCDR (tem)); | |
3715 | if (CONSP (val)) | |
3716 | val = XCAR (val); | |
3717 | } | |
e690ca94 | 3718 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3719 | val = Vcoding_system_for_read; |
41d03b9a GM |
3720 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3721 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3722 | /* We dare not decode end-of-line format by setting VAL to |
3723 | Qraw_text, because the existing Emacs Lisp libraries | |
3724 | assume that they receive bare code including a sequene of | |
3725 | CR LF. */ | |
3726 | val = Qnil; | |
3727 | else | |
3728 | { | |
991234f0 KS |
3729 | if (NILP (host) || NILP (service)) |
3730 | coding_systems = Qnil; | |
3731 | else | |
3732 | { | |
3733 | args[0] = Qopen_network_stream, args[1] = name, | |
3734 | args[2] = buffer, args[3] = host, args[4] = service; | |
3735 | GCPRO1 (proc); | |
3736 | coding_systems = Ffind_operation_coding_system (5, args); | |
3737 | UNGCPRO; | |
3738 | } | |
67918941 | 3739 | if (CONSP (coding_systems)) |
70949dac | 3740 | val = XCAR (coding_systems); |
67918941 | 3741 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3742 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3743 | else |
3744 | val = Qnil; | |
3745 | } | |
e690ca94 | 3746 | p->decode_coding_system = val; |
0fa1789e | 3747 | |
e690ca94 | 3748 | if (!NILP (tem)) |
6b61353c KH |
3749 | { |
3750 | val = XCAR (XCDR (tem)); | |
3751 | if (CONSP (val)) | |
3752 | val = XCDR (val); | |
3753 | } | |
e690ca94 | 3754 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3755 | val = Vcoding_system_for_write; |
3756 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3757 | val = Qnil; | |
3758 | else | |
3759 | { | |
3760 | if (EQ (coding_systems, Qt)) | |
3761 | { | |
991234f0 KS |
3762 | if (NILP (host) || NILP (service)) |
3763 | coding_systems = Qnil; | |
3764 | else | |
3765 | { | |
3766 | args[0] = Qopen_network_stream, args[1] = name, | |
3767 | args[2] = buffer, args[3] = host, args[4] = service; | |
3768 | GCPRO1 (proc); | |
3769 | coding_systems = Ffind_operation_coding_system (5, args); | |
3770 | UNGCPRO; | |
3771 | } | |
67918941 RS |
3772 | } |
3773 | if (CONSP (coding_systems)) | |
70949dac | 3774 | val = XCDR (coding_systems); |
67918941 | 3775 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3776 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3777 | else |
3778 | val = Qnil; | |
3779 | } | |
e690ca94 | 3780 | p->encode_coding_system = val; |
67918941 | 3781 | } |
03f04413 | 3782 | setup_process_coding_systems (proc); |
0fa1789e | 3783 | |
e690ca94 | 3784 | p->decoding_buf = make_uninit_string (0); |
60f0fb11 | 3785 | p->decoding_carryover = 0; |
e690ca94 | 3786 | p->encoding_buf = make_uninit_string (0); |
0fa1789e | 3787 | |
e690ca94 | 3788 | p->inherit_coding_system_flag |
e6fca843 | 3789 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3790 | |
d0d6b7c5 JB |
3791 | UNGCPRO; |
3792 | return proc; | |
3793 | } | |
3794 | #endif /* HAVE_SOCKETS */ | |
3795 | ||
6b61353c KH |
3796 | \f |
3797 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
3798 | ||
3799 | #ifdef SIOCGIFCONF | |
3800 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3801 | doc: /* Return an alist of all network interfaces and their network address. | |
3802 | Each element is a cons, the car of which is a string containing the | |
3803 | interface name, and the cdr is the network address in internal | |
3804 | format; see the description of ADDRESS in `make-network-process'. */) | |
3805 | () | |
3806 | { | |
3807 | struct ifconf ifconf; | |
3808 | struct ifreq *ifreqs = NULL; | |
3809 | int ifaces = 0; | |
3810 | int buf_size, s; | |
3811 | Lisp_Object res; | |
3812 | ||
3813 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3814 | if (s < 0) | |
3815 | return Qnil; | |
3816 | ||
3817 | again: | |
3818 | ifaces += 25; | |
3819 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3820 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3821 | if (!ifreqs) | |
3822 | { | |
3823 | close (s); | |
3824 | return Qnil; | |
3825 | } | |
3826 | ||
3827 | ifconf.ifc_len = buf_size; | |
3828 | ifconf.ifc_req = ifreqs; | |
3829 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3830 | { | |
3831 | close (s); | |
3832 | return Qnil; | |
3833 | } | |
3834 | ||
3835 | if (ifconf.ifc_len == buf_size) | |
3836 | goto again; | |
3837 | ||
3838 | close (s); | |
3839 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3840 | ||
3841 | res = Qnil; | |
3842 | while (--ifaces >= 0) | |
3843 | { | |
3844 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3845 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3846 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3847 | continue; | |
3848 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3849 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3850 | res = Fcons (Fcons (build_string (namebuf), | |
3851 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3852 | sizeof (struct sockaddr))), | |
3853 | res); | |
3854 | } | |
3855 | ||
3856 | return res; | |
3857 | } | |
3858 | #endif /* SIOCGIFCONF */ | |
3859 | ||
3860 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3861 | ||
3862 | struct ifflag_def { | |
3863 | int flag_bit; | |
3864 | char *flag_sym; | |
3865 | }; | |
3866 | ||
3867 | static struct ifflag_def ifflag_table[] = { | |
3868 | #ifdef IFF_UP | |
3869 | { IFF_UP, "up" }, | |
3870 | #endif | |
3871 | #ifdef IFF_BROADCAST | |
3872 | { IFF_BROADCAST, "broadcast" }, | |
3873 | #endif | |
3874 | #ifdef IFF_DEBUG | |
3875 | { IFF_DEBUG, "debug" }, | |
3876 | #endif | |
3877 | #ifdef IFF_LOOPBACK | |
3878 | { IFF_LOOPBACK, "loopback" }, | |
3879 | #endif | |
3880 | #ifdef IFF_POINTOPOINT | |
3881 | { IFF_POINTOPOINT, "pointopoint" }, | |
3882 | #endif | |
3883 | #ifdef IFF_RUNNING | |
3884 | { IFF_RUNNING, "running" }, | |
3885 | #endif | |
3886 | #ifdef IFF_NOARP | |
3887 | { IFF_NOARP, "noarp" }, | |
3888 | #endif | |
3889 | #ifdef IFF_PROMISC | |
3890 | { IFF_PROMISC, "promisc" }, | |
3891 | #endif | |
3892 | #ifdef IFF_NOTRAILERS | |
3893 | { IFF_NOTRAILERS, "notrailers" }, | |
3894 | #endif | |
3895 | #ifdef IFF_ALLMULTI | |
3896 | { IFF_ALLMULTI, "allmulti" }, | |
3897 | #endif | |
3898 | #ifdef IFF_MASTER | |
3899 | { IFF_MASTER, "master" }, | |
3900 | #endif | |
3901 | #ifdef IFF_SLAVE | |
3902 | { IFF_SLAVE, "slave" }, | |
3903 | #endif | |
3904 | #ifdef IFF_MULTICAST | |
3905 | { IFF_MULTICAST, "multicast" }, | |
3906 | #endif | |
3907 | #ifdef IFF_PORTSEL | |
3908 | { IFF_PORTSEL, "portsel" }, | |
3909 | #endif | |
3910 | #ifdef IFF_AUTOMEDIA | |
3911 | { IFF_AUTOMEDIA, "automedia" }, | |
3912 | #endif | |
3913 | #ifdef IFF_DYNAMIC | |
3914 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3915 | #endif |
2026418c YM |
3916 | #ifdef IFF_OACTIVE |
3917 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3918 | #endif |
3919 | #ifdef IFF_SIMPLEX | |
3920 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3921 | #endif | |
3922 | #ifdef IFF_LINK0 | |
3923 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3924 | #endif | |
3925 | #ifdef IFF_LINK1 | |
3926 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3927 | #endif | |
3928 | #ifdef IFF_LINK2 | |
3929 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3930 | #endif |
3931 | { 0, 0 } | |
3932 | }; | |
3933 | ||
3934 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3935 | doc: /* Return information about network interface named IFNAME. | |
3936 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3937 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3938 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3939 | FLAGS is the current flags of the interface. */) | |
3940 | (ifname) | |
3941 | Lisp_Object ifname; | |
3942 | { | |
3943 | struct ifreq rq; | |
3944 | Lisp_Object res = Qnil; | |
3945 | Lisp_Object elt; | |
3946 | int s; | |
3947 | int any = 0; | |
3948 | ||
3949 | CHECK_STRING (ifname); | |
3950 | ||
3951 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
3952 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
3953 | ||
3954 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3955 | if (s < 0) | |
3956 | return Qnil; | |
3957 | ||
3958 | elt = Qnil; | |
3959 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) | |
3960 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) | |
3961 | { | |
3962 | int flags = rq.ifr_flags; | |
3963 | struct ifflag_def *fp; | |
3964 | int fnum; | |
3965 | ||
3966 | any++; | |
82a80058 | 3967 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3968 | { |
3969 | if (flags & fp->flag_bit) | |
3970 | { | |
3971 | elt = Fcons (intern (fp->flag_sym), elt); | |
3972 | flags -= fp->flag_bit; | |
3973 | } | |
3974 | } | |
3975 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3976 | { | |
3977 | if (flags & (1 << fnum)) | |
3978 | { | |
3979 | elt = Fcons (make_number (fnum), elt); | |
3980 | } | |
3981 | } | |
3982 | } | |
3983 | #endif | |
3984 | res = Fcons (elt, res); | |
3985 | ||
3986 | elt = Qnil; | |
3987 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) | |
3988 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) | |
3989 | { | |
3990 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3991 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3992 | int n; | |
3993 | ||
3994 | any++; | |
3995 | for (n = 0; n < 6; n++) | |
3996 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3997 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3998 | } | |
3999 | #endif | |
4000 | res = Fcons (elt, res); | |
4001 | ||
4002 | elt = Qnil; | |
2026418c | 4003 | #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
4004 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
4005 | { | |
4006 | any++; | |
2026418c | 4007 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 4008 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
4009 | #else |
4010 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
4011 | #endif | |
6b61353c KH |
4012 | } |
4013 | #endif | |
4014 | res = Fcons (elt, res); | |
4015 | ||
4016 | elt = Qnil; | |
4017 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) | |
4018 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) | |
4019 | { | |
4020 | any++; | |
4021 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
4022 | } | |
4023 | #endif | |
4024 | res = Fcons (elt, res); | |
4025 | ||
4026 | elt = Qnil; | |
4027 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) | |
4028 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) | |
4029 | { | |
4030 | any++; | |
4031 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
4032 | } | |
4033 | #endif | |
4034 | res = Fcons (elt, res); | |
4035 | ||
4036 | close (s); | |
4037 | ||
4038 | return any ? res : Qnil; | |
4039 | } | |
4040 | #endif | |
4041 | #endif /* HAVE_SOCKETS */ | |
4042 | ||
04391069 RS |
4043 | /* Turn off input and output for process PROC. */ |
4044 | ||
6b53bb85 | 4045 | void |
d0d6b7c5 JB |
4046 | deactivate_process (proc) |
4047 | Lisp_Object proc; | |
4048 | { | |
4049 | register int inchannel, outchannel; | |
4050 | register struct Lisp_Process *p = XPROCESS (proc); | |
4051 | ||
60f0fb11 SM |
4052 | inchannel = p->infd; |
4053 | outchannel = p->outfd; | |
d0d6b7c5 | 4054 | |
6b61353c | 4055 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 4056 | if (p->read_output_delay > 0) |
6b61353c KH |
4057 | { |
4058 | if (--process_output_delay_count < 0) | |
4059 | process_output_delay_count = 0; | |
60f0fb11 SM |
4060 | p->read_output_delay = 0; |
4061 | p->read_output_skip = 0; | |
6b61353c KH |
4062 | } |
4063 | #endif | |
f3d9532b | 4064 | |
a9f2c884 | 4065 | if (inchannel >= 0) |
d0d6b7c5 JB |
4066 | { |
4067 | /* Beware SIGCHLD hereabouts. */ | |
4068 | flush_pending_output (inchannel); | |
68c45bf0 | 4069 | emacs_close (inchannel); |
a9f2c884 | 4070 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 4071 | emacs_close (outchannel); |
d0d6b7c5 | 4072 | |
60f0fb11 SM |
4073 | p->infd = -1; |
4074 | p->outfd = -1; | |
e690ca94 KS |
4075 | #ifdef DATAGRAM_SOCKETS |
4076 | if (DATAGRAM_CHAN_P (inchannel)) | |
4077 | { | |
4078 | xfree (datagram_address[inchannel].sa); | |
4079 | datagram_address[inchannel].sa = 0; | |
4080 | datagram_address[inchannel].len = 0; | |
4081 | } | |
4082 | #endif | |
d0d6b7c5 JB |
4083 | chan_process[inchannel] = Qnil; |
4084 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 4085 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 4086 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4087 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
4088 | { | |
4089 | FD_CLR (inchannel, &connect_wait_mask); | |
4090 | if (--num_pending_connects < 0) | |
4091 | abort (); | |
4092 | } | |
bad49fc7 | 4093 | #endif |
7d0e672e RS |
4094 | if (inchannel == max_process_desc) |
4095 | { | |
4096 | int i; | |
4097 | /* We just closed the highest-numbered process input descriptor, | |
4098 | so recompute the highest-numbered one now. */ | |
4099 | max_process_desc = 0; | |
4100 | for (i = 0; i < MAXDESC; i++) | |
4101 | if (!NILP (chan_process[i])) | |
4102 | max_process_desc = i; | |
4103 | } | |
d0d6b7c5 JB |
4104 | } |
4105 | } | |
4106 | ||
4107 | /* Close all descriptors currently in use for communication | |
4108 | with subprocess. This is used in a newly-forked subprocess | |
4109 | to get rid of irrelevant descriptors. */ | |
4110 | ||
6b53bb85 | 4111 | void |
d0d6b7c5 JB |
4112 | close_process_descs () |
4113 | { | |
e98d950b | 4114 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
4115 | int i; |
4116 | for (i = 0; i < MAXDESC; i++) | |
4117 | { | |
4118 | Lisp_Object process; | |
4119 | process = chan_process[i]; | |
4120 | if (!NILP (process)) | |
4121 | { | |
60f0fb11 SM |
4122 | int in = XPROCESS (process)->infd; |
4123 | int out = XPROCESS (process)->outfd; | |
a9f2c884 | 4124 | if (in >= 0) |
68c45bf0 | 4125 | emacs_close (in); |
a9f2c884 | 4126 | if (out >= 0 && in != out) |
68c45bf0 | 4127 | emacs_close (out); |
d0d6b7c5 JB |
4128 | } |
4129 | } | |
e98d950b | 4130 | #endif |
d0d6b7c5 JB |
4131 | } |
4132 | \f | |
4133 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 4134 | 0, 4, 0, |
fdb82f93 PJ |
4135 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
4136 | It is read into the process' buffers or given to their filter functions. | |
4137 | Non-nil arg PROCESS means do not return until some output has been received | |
4138 | from PROCESS. | |
5088da42 KS |
4139 | |
4140 | Non-nil second arg SECONDS and third arg MILLISEC are number of | |
4141 | seconds and milliseconds to wait; return after that much time whether | |
4142 | or not there is input. If SECONDS is a floating point number, | |
4143 | it specifies a fractional number of seconds to wait. | |
891bd142 | 4144 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 4145 | |
107ed38d KS |
4146 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
4147 | from PROCESS, suspending reading output from other processes. | |
4148 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 4149 | Return non-nil if we received any output before the timeout expired. */) |
5088da42 KS |
4150 | (process, seconds, millisec, just_this_one) |
4151 | register Lisp_Object process, seconds, millisec, just_this_one; | |
d0d6b7c5 | 4152 | { |
5088da42 | 4153 | int secs, usecs = 0; |
d0d6b7c5 | 4154 | |
0748d150 | 4155 | if (! NILP (process)) |
b7826503 | 4156 | CHECK_PROCESS (process); |
107ed38d KS |
4157 | else |
4158 | just_this_one = Qnil; | |
0748d150 | 4159 | |
891bd142 SM |
4160 | if (!NILP (millisec)) |
4161 | { /* Obsolete calling convention using integers rather than floats. */ | |
4162 | CHECK_NUMBER (millisec); | |
4163 | if (NILP (seconds)) | |
4164 | seconds = make_float (XINT (millisec) / 1000.0); | |
4165 | else | |
4166 | { | |
4167 | CHECK_NUMBER (seconds); | |
4168 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
4169 | } | |
4170 | } | |
4171 | ||
5088da42 | 4172 | if (!NILP (seconds)) |
d0d6b7c5 | 4173 | { |
5088da42 KS |
4174 | if (INTEGERP (seconds)) |
4175 | secs = XINT (seconds); | |
4176 | else if (FLOATP (seconds)) | |
4177 | { | |
4178 | double timeout = XFLOAT_DATA (seconds); | |
4179 | secs = (int) timeout; | |
4180 | usecs = (int) ((timeout - (double) secs) * 1000000); | |
4181 | } | |
4182 | else | |
4183 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 4184 | |
5088da42 KS |
4185 | if (secs < 0 || (secs == 0 && usecs == 0)) |
4186 | secs = -1, usecs = 0; | |
d0d6b7c5 JB |
4187 | } |
4188 | else | |
5088da42 | 4189 | secs = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
4190 | |
4191 | return | |
5088da42 | 4192 | (wait_reading_process_output (secs, usecs, 0, 0, |
214d6069 KS |
4193 | Qnil, |
4194 | !NILP (process) ? XPROCESS (process) : NULL, | |
4195 | NILP (just_this_one) ? 0 : | |
4196 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
4197 | ? Qt : Qnil); |
4198 | } | |
4199 | ||
e690ca94 KS |
4200 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4201 | ||
4202 | static int connect_counter = 0; | |
4203 | ||
4204 | static void | |
4205 | server_accept_connection (server, channel) | |
4206 | Lisp_Object server; | |
4207 | int channel; | |
4208 | { | |
4209 | Lisp_Object proc, caller, name, buffer; | |
4210 | Lisp_Object contact, host, service; | |
4211 | struct Lisp_Process *ps= XPROCESS (server); | |
4212 | struct Lisp_Process *p; | |
4213 | int s; | |
4214 | union u_sockaddr { | |
4215 | struct sockaddr sa; | |
4216 | struct sockaddr_in in; | |
e1652a86 KS |
4217 | #ifdef AF_INET6 |
4218 | struct sockaddr_in6 in6; | |
4219 | #endif | |
e690ca94 KS |
4220 | #ifdef HAVE_LOCAL_SOCKETS |
4221 | struct sockaddr_un un; | |
4222 | #endif | |
4223 | } saddr; | |
4224 | int len = sizeof saddr; | |
4225 | ||
4226 | s = accept (channel, &saddr.sa, &len); | |
4227 | ||
4228 | if (s < 0) | |
4229 | { | |
4230 | int code = errno; | |
4231 | ||
4232 | if (code == EAGAIN) | |
4233 | return; | |
4234 | #ifdef EWOULDBLOCK | |
4235 | if (code == EWOULDBLOCK) | |
4236 | return; | |
4237 | #endif | |
4238 | ||
4239 | if (!NILP (ps->log)) | |
4240 | call3 (ps->log, server, Qnil, | |
4241 | concat3 (build_string ("accept failed with code"), | |
4242 | Fnumber_to_string (make_number (code)), | |
4243 | build_string ("\n"))); | |
4244 | return; | |
4245 | } | |
4246 | ||
4247 | connect_counter++; | |
4248 | ||
4249 | /* Setup a new process to handle the connection. */ | |
4250 | ||
4251 | /* Generate a unique identification of the caller, and build contact | |
4252 | information for this process. */ | |
4253 | host = Qt; | |
4254 | service = Qnil; | |
4255 | switch (saddr.sa.sa_family) | |
4256 | { | |
4257 | case AF_INET: | |
4258 | { | |
4259 | Lisp_Object args[5]; | |
4260 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4261 | args[0] = build_string ("%d.%d.%d.%d"); | |
4262 | args[1] = make_number (*ip++); | |
4263 | args[2] = make_number (*ip++); | |
4264 | args[3] = make_number (*ip++); | |
4265 | args[4] = make_number (*ip++); | |
4266 | host = Fformat (5, args); | |
4267 | service = make_number (ntohs (saddr.in.sin_port)); | |
4268 | ||
4269 | args[0] = build_string (" <%s:%d>"); | |
4270 | args[1] = host; | |
4271 | args[2] = service; | |
4272 | caller = Fformat (3, args); | |
4273 | } | |
4274 | break; | |
4275 | ||
e1652a86 KS |
4276 | #ifdef AF_INET6 |
4277 | case AF_INET6: | |
4278 | { | |
4279 | Lisp_Object args[9]; | |
4280 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4281 | int i; | |
4282 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4283 | for (i = 0; i < 8; i++) | |
4284 | args[i+1] = make_number (ntohs(ip6[i])); | |
4285 | host = Fformat (9, args); | |
4286 | service = make_number (ntohs (saddr.in.sin_port)); | |
4287 | ||
4288 | args[0] = build_string (" <[%s]:%d>"); | |
4289 | args[1] = host; | |
4290 | args[2] = service; | |
4291 | caller = Fformat (3, args); | |
4292 | } | |
4293 | break; | |
4294 | #endif | |
4295 | ||
e690ca94 KS |
4296 | #ifdef HAVE_LOCAL_SOCKETS |
4297 | case AF_LOCAL: | |
4298 | #endif | |
4299 | default: | |
4300 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4301 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4302 | break; |
4303 | } | |
4304 | ||
4305 | /* Create a new buffer name for this process if it doesn't have a | |
4306 | filter. The new buffer name is based on the buffer name or | |
4307 | process name of the server process concatenated with the caller | |
4308 | identification. */ | |
4309 | ||
4310 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4311 | buffer = Qnil; | |
4312 | else | |
4313 | { | |
4314 | buffer = ps->buffer; | |
4315 | if (!NILP (buffer)) | |
4316 | buffer = Fbuffer_name (buffer); | |
4317 | else | |
4318 | buffer = ps->name; | |
4319 | if (!NILP (buffer)) | |
4320 | { | |
4321 | buffer = concat2 (buffer, caller); | |
4322 | buffer = Fget_buffer_create (buffer); | |
4323 | } | |
4324 | } | |
4325 | ||
4326 | /* Generate a unique name for the new server process. Combine the | |
4327 | server process name with the caller identification. */ | |
4328 | ||
4329 | name = concat2 (ps->name, caller); | |
4330 | proc = make_process (name); | |
4331 | ||
4332 | chan_process[s] = proc; | |
4333 | ||
4334 | #ifdef O_NONBLOCK | |
4335 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4336 | #else | |
4337 | #ifdef O_NDELAY | |
4338 | fcntl (s, F_SETFL, O_NDELAY); | |
4339 | #endif | |
4340 | #endif | |
4341 | ||
4342 | p = XPROCESS (proc); | |
4343 | ||
4344 | /* Build new contact information for this setup. */ | |
4345 | contact = Fcopy_sequence (ps->childp); | |
4346 | contact = Fplist_put (contact, QCserver, Qnil); | |
4347 | contact = Fplist_put (contact, QChost, host); | |
4348 | if (!NILP (service)) | |
4349 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4350 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4351 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4352 | #ifdef HAVE_GETSOCKNAME | |
4353 | len = sizeof saddr; | |
2185db04 | 4354 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4355 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4356 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4357 | #endif | |
4358 | ||
4359 | p->childp = contact; | |
faa7db08 | 4360 | p->plist = Fcopy_sequence (ps->plist); |
d888760c | 4361 | p->type = Qnetwork; |
ac4a7584 | 4362 | |
e690ca94 KS |
4363 | p->buffer = buffer; |
4364 | p->sentinel = ps->sentinel; | |
4365 | p->filter = ps->filter; | |
4366 | p->command = Qnil; | |
6bfd98e7 | 4367 | p->pid = 0; |
60f0fb11 SM |
4368 | p->infd = s; |
4369 | p->outfd = s; | |
e690ca94 KS |
4370 | p->status = Qrun; |
4371 | ||
4372 | /* Client processes for accepted connections are not stopped initially. */ | |
4373 | if (!EQ (p->filter, Qt)) | |
4374 | { | |
4375 | FD_SET (s, &input_wait_mask); | |
4376 | FD_SET (s, &non_keyboard_wait_mask); | |
4377 | } | |
4378 | ||
4379 | if (s > max_process_desc) | |
4380 | max_process_desc = s; | |
4381 | ||
177c0ea7 | 4382 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4383 | This seems to be the proper thing to do, as the coding system |
4384 | of the new process should reflect the settings at the time the | |
4385 | server socket was opened; not the current settings. */ | |
4386 | ||
4387 | p->decode_coding_system = ps->decode_coding_system; | |
4388 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4389 | setup_process_coding_systems (proc); |
e690ca94 KS |
4390 | |
4391 | p->decoding_buf = make_uninit_string (0); | |
60f0fb11 | 4392 | p->decoding_carryover = 0; |
e690ca94 | 4393 | p->encoding_buf = make_uninit_string (0); |
e690ca94 KS |
4394 | |
4395 | p->inherit_coding_system_flag | |
60f0fb11 | 4396 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 KS |
4397 | |
4398 | if (!NILP (ps->log)) | |
4399 | call3 (ps->log, server, proc, | |
4400 | concat3 (build_string ("accept from "), | |
4401 | (STRINGP (host) ? host : build_string ("-")), | |
4402 | build_string ("\n"))); | |
4403 | ||
bed9664a | 4404 | if (!NILP (p->sentinel)) |
177c0ea7 | 4405 | exec_sentinel (proc, |
e690ca94 KS |
4406 | concat3 (build_string ("open from "), |
4407 | (STRINGP (host) ? host : build_string ("-")), | |
4408 | build_string ("\n"))); | |
4409 | } | |
4410 | ||
d0d6b7c5 JB |
4411 | /* This variable is different from waiting_for_input in keyboard.c. |
4412 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4413 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4414 | for user-input when that process-filter was called. |
4415 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4416 | lisp code is being evalled. |
4417 | This is also used in record_asynch_buffer_change. | |
4418 | For that purpose, this must be 0 | |
214d6069 | 4419 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4420 | static int waiting_for_user_input_p; |
4421 | ||
2beb96f9 KS |
4422 | static Lisp_Object |
4423 | wait_reading_process_output_unwind (data) | |
4424 | Lisp_Object data; | |
4425 | { | |
4426 | waiting_for_user_input_p = XINT (data); | |
4427 | return Qnil; | |
4428 | } | |
4429 | ||
c573ae8e | 4430 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4431 | static void |
214d6069 | 4432 | wait_reading_process_output_1 () |
c573ae8e RS |
4433 | { |
4434 | } | |
4435 | ||
e1e541bd KS |
4436 | /* Use a wrapper around select to work around a bug in gdb 5.3. |
4437 | Normally, the wrapper is optimzed away by inlining. | |
4438 | ||
4439 | If emacs is stopped inside select, the gdb backtrace doesn't | |
4440 | show the function which called select, so it is practically | |
4441 | impossible to step through wait_reading_process_output. */ | |
4442 | ||
4443 | #ifndef select | |
4444 | static INLINE int | |
4445 | select_wrapper (n, rfd, wfd, xfd, tmo) | |
4446 | int n; | |
4447 | SELECT_TYPE *rfd, *wfd, *xfd; | |
4448 | EMACS_TIME *tmo; | |
4449 | { | |
4450 | return select (n, rfd, wfd, xfd, tmo); | |
4451 | } | |
4452 | #define select select_wrapper | |
4453 | #endif | |
4454 | ||
d0d6b7c5 JB |
4455 | /* Read and dispose of subprocess output while waiting for timeout to |
4456 | elapse and/or keyboard input to be available. | |
4457 | ||
de6fd4b9 | 4458 | TIME_LIMIT is: |
d0d6b7c5 JB |
4459 | timeout in seconds, or |
4460 | zero for no limit, or | |
4461 | -1 means gobble data immediately available but don't wait for any. | |
4462 | ||
de6fd4b9 RS |
4463 | MICROSECS is: |
4464 | an additional duration to wait, measured in microseconds. | |
4465 | If this is nonzero and time_limit is 0, then the timeout | |
4466 | consists of MICROSECS only. | |
6e4f3667 | 4467 | |
de6fd4b9 | 4468 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4469 | 0 to ignore keyboard input, or |
4470 | 1 to return when input is available, or | |
84aa3ace | 4471 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4472 | the quit handler, or |
d0d6b7c5 | 4473 | |
de6fd4b9 | 4474 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4475 | output that arrives. |
d0d6b7c5 | 4476 | |
b89a415a KS |
4477 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4478 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4479 | |
b89a415a | 4480 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4481 | process. The return value is true if we read some input from |
b89a415a KS |
4482 | that process. |
4483 | ||
4484 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4485 | (suspending output from other processes). A negative value | |
4486 | means don't run any timers either. | |
4487 | ||
e0f24100 | 4488 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4489 | received input from that process before the timeout elapsed. |
e0f24100 | 4490 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4491 | |
dfcf069d | 4492 | int |
214d6069 KS |
4493 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
4494 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
4495 | int time_limit, microsecs, read_kbd, do_display; |
4496 | Lisp_Object wait_for_cell; | |
4497 | struct Lisp_Process *wait_proc; | |
4498 | int just_wait_proc; | |
d0d6b7c5 | 4499 | { |
41d03b9a | 4500 | register int channel, nfds; |
855448dc | 4501 | SELECT_TYPE Available; |
bad49fc7 | 4502 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4503 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4504 | int check_connect; |
4505 | #endif | |
4506 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4507 | int xerrno; |
4508 | Lisp_Object proc; | |
41d03b9a | 4509 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4510 | int wait_channel = -1; |
d0d6b7c5 | 4511 | int got_some_input = 0; |
2beb96f9 | 4512 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4513 | |
4514 | FD_ZERO (&Available); | |
bad49fc7 | 4515 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4516 | FD_ZERO (&Connecting); |
bad49fc7 | 4517 | #endif |
d0d6b7c5 | 4518 | |
b89a415a KS |
4519 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4520 | if (wait_proc != NULL) | |
60f0fb11 | 4521 | wait_channel = wait_proc->infd; |
84aa3ace | 4522 | |
2beb96f9 KS |
4523 | record_unwind_protect (wait_reading_process_output_unwind, |
4524 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4525 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4526 | |
4527 | /* Since we may need to wait several times, | |
4528 | compute the absolute time to return at. */ | |
4529 | if (time_limit || microsecs) | |
4530 | { | |
4531 | EMACS_GET_TIME (end_time); | |
4532 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4533 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4534 | } | |
4535 | ||
d0d6b7c5 JB |
4536 | while (1) |
4537 | { | |
c0239a0b RS |
4538 | int timeout_reduced_for_timers = 0; |
4539 | ||
d0d6b7c5 JB |
4540 | /* If calling from keyboard input, do not quit |
4541 | since we want to return C-g as an input character. | |
4542 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4543 | if (read_kbd >= 0) |
d0d6b7c5 | 4544 | QUIT; |
6b61353c | 4545 | #ifdef SYNC_INPUT |
ef5eb925 JD |
4546 | else |
4547 | { | |
4548 | if (interrupt_input_pending) | |
4549 | handle_async_input (); | |
4550 | if (pending_atimers) | |
4551 | do_pending_atimers (); | |
4552 | } | |
6b61353c | 4553 | #endif |
d0d6b7c5 | 4554 | |
889255b4 | 4555 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4556 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4557 | break; |
4558 | ||
d0d6b7c5 JB |
4559 | /* Compute time from now till when time limit is up */ |
4560 | /* Exit if already run out */ | |
4561 | if (time_limit == -1) | |
4562 | { | |
4563 | /* -1 specified for timeout means | |
4564 | gobble output available now | |
4565 | but don't wait at all. */ | |
4566 | ||
4567 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4568 | } | |
4569 | else if (time_limit || microsecs) | |
4570 | { | |
4571 | EMACS_GET_TIME (timeout); | |
4572 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4573 | if (EMACS_TIME_NEG_P (timeout)) | |
4574 | break; | |
4575 | } | |
4576 | else | |
4577 | { | |
4578 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4579 | } | |
4580 | ||
f854a00b RS |
4581 | /* Normally we run timers here. |
4582 | But not if wait_for_cell; in those cases, | |
4583 | the wait is supposed to be short, | |
4584 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4585 | if (NILP (wait_for_cell) |
b89a415a | 4586 | && just_wait_proc >= 0) |
fb4c3627 | 4587 | { |
c0239a0b | 4588 | EMACS_TIME timer_delay; |
c573ae8e | 4589 | |
9baacf76 | 4590 | do |
c573ae8e | 4591 | { |
9baacf76 | 4592 | int old_timers_run = timers_run; |
c88164fe | 4593 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4594 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4595 | |
9baacf76 | 4596 | timer_delay = timer_check (1); |
a2fab450 GM |
4597 | |
4598 | /* If a timer has run, this might have changed buffers | |
4599 | an alike. Make read_key_sequence aware of that. */ | |
4600 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4601 | && (old_buffer != current_buffer |
4602 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4603 | && waiting_for_user_input_p == -1) |
4604 | record_asynch_buffer_change (); | |
177c0ea7 | 4605 | |
9baacf76 GM |
4606 | if (timers_run != old_timers_run && do_display) |
4607 | /* We must retry, since a timer may have requeued itself | |
4608 | and that could alter the time_delay. */ | |
3007ebfb | 4609 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4610 | else |
4611 | break; | |
c573ae8e | 4612 | } |
9baacf76 | 4613 | while (!detect_input_pending ()); |
c573ae8e | 4614 | |
69645afc | 4615 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4616 | if (read_kbd != 0 |
69645afc RS |
4617 | && requeued_events_pending_p ()) |
4618 | break; | |
4619 | ||
c0239a0b | 4620 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4621 | { |
4622 | EMACS_TIME difference; | |
4623 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4624 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4625 | { |
4626 | timeout = timer_delay; | |
4627 | timeout_reduced_for_timers = 1; | |
4628 | } | |
fb4c3627 | 4629 | } |
4abca5e7 RS |
4630 | /* If time_limit is -1, we are not going to wait at all. */ |
4631 | else if (time_limit != -1) | |
c573ae8e RS |
4632 | { |
4633 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4634 | wait_reading_process_output_1 (); |
c573ae8e | 4635 | } |
fb4c3627 RS |
4636 | } |
4637 | ||
90ab1a81 JB |
4638 | /* Cause C-g and alarm signals to take immediate action, |
4639 | and cause input available signals to zero out timeout. | |
4640 | ||
4641 | It is important that we do this before checking for process | |
4642 | activity. If we get a SIGCHLD after the explicit checks for | |
4643 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4644 | if (read_kbd < 0) |
90ab1a81 JB |
4645 | set_waiting_for_input (&timeout); |
4646 | ||
6be429b1 JB |
4647 | /* If status of something has changed, and no input is |
4648 | available, notify the user of the change right away. After | |
4649 | this explicit check, we'll let the SIGCHLD handler zap | |
61bd39a3 CY |
4650 | timeout to get our attention. When Emacs is run |
4651 | interactively, only do this with a nonzero DO_DISPLAY | |
4652 | argument, because status_notify triggers redisplay. */ | |
4653 | if (update_tick != process_tick | |
4654 | && (do_display || noninteractive)) | |
6be429b1 | 4655 | { |
bad49fc7 KS |
4656 | SELECT_TYPE Atemp; |
4657 | #ifdef NON_BLOCKING_CONNECT | |
4658 | SELECT_TYPE Ctemp; | |
4659 | #endif | |
dd2a17ab | 4660 | |
6be429b1 | 4661 | Atemp = input_wait_mask; |
bad49fc7 KS |
4662 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4663 | ||
6be429b1 | 4664 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
994d9841 NR |
4665 | if ((select (max (max (max_process_desc, max_keyboard_desc), |
4666 | max_gpm_desc) + 1, | |
177c0ea7 | 4667 | &Atemp, |
bad49fc7 | 4668 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4669 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4670 | #else |
4671 | (SELECT_TYPE *)0, | |
4672 | #endif | |
dd2a17ab | 4673 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4674 | <= 0)) |
90ab1a81 JB |
4675 | { |
4676 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4677 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4678 | clear_waiting_for_input (); |
ff6daed3 | 4679 | status_notify (NULL); |
90ab1a81 | 4680 | } |
6be429b1 JB |
4681 | } |
4682 | ||
dd2a17ab KS |
4683 | /* Don't wait for output from a non-running process. Just |
4684 | read whatever data has already been received. */ | |
6bfd98e7 | 4685 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4686 | update_status (wait_proc); |
6bfd98e7 | 4687 | if (wait_proc |
dd2a17ab KS |
4688 | && ! EQ (wait_proc->status, Qrun) |
4689 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4690 | { |
215b45e9 | 4691 | int nread, total_nread = 0; |
7ce63188 | 4692 | |
9aa2a7f4 | 4693 | clear_waiting_for_input (); |
7ce63188 RS |
4694 | XSETPROCESS (proc, wait_proc); |
4695 | ||
4696 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4697 | while (wait_proc->infd >= 0) |
215b45e9 | 4698 | { |
60f0fb11 | 4699 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4700 | |
4701 | if (nread == 0) | |
4702 | break; | |
4703 | ||
177c0ea7 | 4704 | if (0 < nread) |
891bd142 SM |
4705 | { |
4706 | total_nread += nread; | |
4707 | got_some_input = 1; | |
4708 | } | |
215b45e9 RS |
4709 | #ifdef EIO |
4710 | else if (nread == -1 && EIO == errno) | |
4711 | break; | |
e1b37c34 GM |
4712 | #endif |
4713 | #ifdef EAGAIN | |
4714 | else if (nread == -1 && EAGAIN == errno) | |
4715 | break; | |
4716 | #endif | |
4717 | #ifdef EWOULDBLOCK | |
4718 | else if (nread == -1 && EWOULDBLOCK == errno) | |
4719 | break; | |
215b45e9 RS |
4720 | #endif |
4721 | } | |
7ce63188 | 4722 | if (total_nread > 0 && do_display) |
3007ebfb | 4723 | redisplay_preserve_echo_area (10); |
7ce63188 | 4724 | |
9aa2a7f4 JB |
4725 | break; |
4726 | } | |
6be429b1 | 4727 | |
d0d6b7c5 JB |
4728 | /* Wait till there is something to do */ |
4729 | ||
b89a415a | 4730 | if (wait_proc && just_wait_proc) |
107ed38d | 4731 | { |
60f0fb11 | 4732 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4733 | break; |
60f0fb11 | 4734 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 KS |
4735 | check_delay = 0; |
4736 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4737 | } |
4738 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4739 | { |
4740 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4741 | check_delay = 0; |
4742 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4743 | } |
a69281ff | 4744 | else |
dd2a17ab | 4745 | { |
b89a415a | 4746 | if (! read_kbd) |
dd2a17ab KS |
4747 | Available = non_keyboard_wait_mask; |
4748 | else | |
4749 | Available = input_wait_mask; | |
bad49fc7 | 4750 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
6b61353c | 4751 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4752 | } |
d0d6b7c5 | 4753 | |
ff11dfa1 | 4754 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4755 | redisplay now, before we start to wait. There is a race |
4756 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4757 | and indicates that a frame is trashed, the select may block |
4758 | displaying a trashed screen. */ | |
5164ee8e | 4759 | if (frame_garbaged && do_display) |
7286affd RS |
4760 | { |
4761 | clear_waiting_for_input (); | |
3007ebfb | 4762 | redisplay_preserve_echo_area (11); |
b89a415a | 4763 | if (read_kbd < 0) |
7efe788e | 4764 | set_waiting_for_input (&timeout); |
7286affd | 4765 | } |
ffd56f97 | 4766 | |
dd2a17ab | 4767 | no_avail = 0; |
b89a415a | 4768 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4769 | { |
4770 | nfds = 0; | |
dd2a17ab | 4771 | no_avail = 1; |
0a65b032 RS |
4772 | } |
4773 | else | |
dd2a17ab | 4774 | { |
bad49fc7 | 4775 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4776 | if (check_connect) |
4777 | Connecting = connect_wait_mask; | |
bad49fc7 | 4778 | #endif |
6b61353c KH |
4779 | |
4780 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4781 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4782 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4783 | read_output_delay, and we are not reading output for a |
4784 | specific wait_channel. It is not executed if | |
4785 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4786 | if (process_output_skip && check_delay > 0) |
4787 | { | |
4788 | int usecs = EMACS_USECS (timeout); | |
4789 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4790 | usecs = READ_OUTPUT_DELAY_MAX; | |
4791 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4792 | { | |
4793 | proc = chan_process[channel]; | |
4794 | if (NILP (proc)) | |
4795 | continue; | |
db853b7a | 4796 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4797 | processes with non-zero read_output_skip. */ |
4798 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4799 | { |
4800 | check_delay--; | |
60f0fb11 | 4801 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4802 | continue; |
4803 | FD_CLR (channel, &Available); | |
60f0fb11 SM |
4804 | XPROCESS (proc)->read_output_skip = 0; |
4805 | if (XPROCESS (proc)->read_output_delay < usecs) | |
4806 | usecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4807 | } |
4808 | } | |
4809 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4810 | process_output_skip = 0; | |
4811 | } | |
4812 | #endif | |
edfda783 AR |
4813 | #ifdef HAVE_NS |
4814 | nfds = ns_select | |
4815 | #else | |
4816 | nfds = select | |
4817 | #endif | |
4818 | (max (max (max_process_desc, max_keyboard_desc), | |
994d9841 | 4819 | max_gpm_desc) + 1, |
177c0ea7 | 4820 | &Available, |
bad49fc7 | 4821 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4822 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4823 | #else |
4824 | (SELECT_TYPE *)0, | |
4825 | #endif | |
dd2a17ab KS |
4826 | (SELECT_TYPE *)0, &timeout); |
4827 | } | |
6720a7fb | 4828 | |
d0d6b7c5 JB |
4829 | xerrno = errno; |
4830 | ||
4831 | /* Make C-g and alarm signals set flags again */ | |
4832 | clear_waiting_for_input (); | |
4833 | ||
4834 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4835 | do_pending_window_change (0); |
d0d6b7c5 | 4836 | |
c0239a0b RS |
4837 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4838 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4839 | break; |
4840 | if (nfds < 0) | |
4841 | { | |
4842 | if (xerrno == EINTR) | |
dd2a17ab | 4843 | no_avail = 1; |
d0d6b7c5 JB |
4844 | else if (xerrno == EBADF) |
4845 | { | |
4846 | #ifdef AIX | |
4847 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4848 | the child's closure of the pts gives the parent a SIGHUP, and | |
4849 | the ptc file descriptor is automatically closed, | |
4850 | yielding EBADF here or at select() call above. | |
4851 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4852 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4853 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4854 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4855 | #else |
4856 | abort (); | |
4857 | #endif | |
4858 | } | |
4859 | else | |
68c45bf0 | 4860 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4861 | } |
dd2a17ab KS |
4862 | |
4863 | if (no_avail) | |
4864 | { | |
4865 | FD_ZERO (&Available); | |
bad49fc7 | 4866 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4867 | } |
4868 | ||
5d5beb62 RS |
4869 | #if 0 /* When polling is used, interrupt_input is 0, |
4870 | so get_input_pending should read the input. | |
4871 | So this should not be needed. */ | |
4872 | /* If we are using polling for input, | |
4873 | and we see input available, make it get read now. | |
4874 | Otherwise it might not actually get read for a second. | |
214d6069 | 4875 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4876 | it might never get read at all if we don't spend much time |
214d6069 | 4877 | outside of wait_reading_process_output. */ |
b89a415a | 4878 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4879 | && keyboard_bit_set (&Available) |
4880 | && input_polling_used ()) | |
4881 | kill (getpid (), SIGALRM); | |
4882 | #endif | |
4883 | ||
d0d6b7c5 JB |
4884 | /* Check for keyboard input */ |
4885 | /* If there is any, return immediately | |
4886 | to give it higher priority than subprocesses */ | |
4887 | ||
b89a415a | 4888 | if (read_kbd != 0) |
6ed6233b | 4889 | { |
a2fab450 | 4890 | int old_timers_run = timers_run; |
c88164fe | 4891 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4892 | Lisp_Object old_window = selected_window; |
a2fab450 | 4893 | int leave = 0; |
177c0ea7 | 4894 | |
5d6c2aa3 | 4895 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4896 | { |
4897 | swallow_events (do_display); | |
4898 | if (detect_input_pending_run_timers (do_display)) | |
4899 | leave = 1; | |
4900 | } | |
6ed6233b | 4901 | |
a2fab450 GM |
4902 | /* If a timer has run, this might have changed buffers |
4903 | an alike. Make read_key_sequence aware of that. */ | |
4904 | if (timers_run != old_timers_run | |
c88164fe | 4905 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4906 | && (old_buffer != current_buffer |
4907 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4908 | record_asynch_buffer_change (); |
4909 | ||
4910 | if (leave) | |
4911 | break; | |
177c0ea7 JB |
4912 | } |
4913 | ||
69645afc | 4914 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4915 | if (read_kbd != 0 |
69645afc RS |
4916 | && requeued_events_pending_p ()) |
4917 | break; | |
4918 | ||
77e1b3d4 RS |
4919 | /* If we are not checking for keyboard input now, |
4920 | do process events (but don't run any timers). | |
4921 | This is so that X events will be processed. | |
0c9960e9 | 4922 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4923 | That would causes delays in pasting selections, for example. |
4924 | ||
4925 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4926 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4927 | { |
4928 | swallow_events (do_display); | |
0c9960e9 | 4929 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4930 | if (detect_input_pending ()) |
4931 | break; | |
5d5beb62 | 4932 | #endif |
0c9960e9 | 4933 | } |
f854a00b | 4934 | |
84aa3ace | 4935 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4936 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4937 | break; |
4938 | ||
4746118a | 4939 | #ifdef SIGIO |
5d5beb62 | 4940 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4941 | go read it. This can happen with X on BSD after logging out. |
4942 | In that case, there really is no input and no SIGIO, | |
4943 | but select says there is input. */ | |
4944 | ||
b89a415a | 4945 | if (read_kbd && interrupt_input |
2601f59e | 4946 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4947 | kill (getpid (), SIGIO); |
4746118a | 4948 | #endif |
d0d6b7c5 | 4949 | |
d0d6b7c5 JB |
4950 | if (! wait_proc) |
4951 | got_some_input |= nfds > 0; | |
4952 | ||
32676c08 JB |
4953 | /* If checking input just got us a size-change event from X, |
4954 | obey it now if we should. */ | |
b89a415a | 4955 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4956 | do_pending_window_change (0); |
32676c08 | 4957 | |
a9f2c884 | 4958 | /* Check for data from a process. */ |
dd2a17ab KS |
4959 | if (no_avail || nfds == 0) |
4960 | continue; | |
4961 | ||
a9f2c884 RS |
4962 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4963 | but this is safer in the short run. */ | |
a69281ff | 4964 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4965 | { |
a69281ff RS |
4966 | if (FD_ISSET (channel, &Available) |
4967 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4968 | { |
4969 | int nread; | |
4970 | ||
4971 | /* If waiting for this channel, arrange to return as | |
4972 | soon as no more input to be processed. No more | |
4973 | waiting. */ | |
4974 | if (wait_channel == channel) | |
4975 | { | |
a9f2c884 | 4976 | wait_channel = -1; |
d0d6b7c5 JB |
4977 | time_limit = -1; |
4978 | got_some_input = 1; | |
4979 | } | |
4980 | proc = chan_process[channel]; | |
4981 | if (NILP (proc)) | |
4982 | continue; | |
4983 | ||
e690ca94 KS |
4984 | /* If this is a server stream socket, accept connection. */ |
4985 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4986 | { | |
4987 | server_accept_connection (proc, channel); | |
4988 | continue; | |
4989 | } | |
4990 | ||
d0d6b7c5 JB |
4991 | /* Read data from the process, starting with our |
4992 | buffered-ahead character if we have one. */ | |
4993 | ||
4994 | nread = read_process_output (proc, channel); | |
4995 | if (nread > 0) | |
4996 | { | |
4997 | /* Since read_process_output can run a filter, | |
4998 | which can call accept-process-output, | |
4999 | don't try to read from any other processes | |
5000 | before doing the select again. */ | |
5001 | FD_ZERO (&Available); | |
5002 | ||
5003 | if (do_display) | |
3007ebfb | 5004 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
5005 | } |
5006 | #ifdef EWOULDBLOCK | |
5007 | else if (nread == -1 && errno == EWOULDBLOCK) | |
5008 | ; | |
0b75e9a4 | 5009 | #endif |
89d7280d RS |
5010 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
5011 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
5012 | #ifdef O_NONBLOCK |
5013 | else if (nread == -1 && errno == EAGAIN) | |
5014 | ; | |
5015 | #else | |
5016 | #ifdef O_NDELAY | |
5017 | else if (nread == -1 && errno == EAGAIN) | |
5018 | ; | |
5019 | /* Note that we cannot distinguish between no input | |
5020 | available now and a closed pipe. | |
5021 | With luck, a closed pipe will be accompanied by | |
5022 | subprocess termination and SIGCHLD. */ | |
d888760c | 5023 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 5024 | ; |
4740825c KS |
5025 | #endif /* O_NDELAY */ |
5026 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
5027 | #ifdef HAVE_PTYS |
5028 | /* On some OSs with ptys, when the process on one end of | |
5029 | a pty exits, the other end gets an error reading with | |
5030 | errno = EIO instead of getting an EOF (0 bytes read). | |
5031 | Therefore, if we get an error reading and errno = | |
5032 | EIO, just continue, because the child process has | |
5033 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
5034 | get a SIGCHLD). |
5035 | ||
5036 | However, it has been known to happen that the SIGCHLD | |
4740825c | 5037 | got lost. So raise the signal again just in case. |
5651af6d | 5038 | It can't hurt. */ |
d0d6b7c5 | 5039 | else if (nread == -1 && errno == EIO) |
4740825c KS |
5040 | { |
5041 | /* Clear the descriptor now, so we only raise the signal once. */ | |
5042 | FD_CLR (channel, &input_wait_mask); | |
5043 | FD_CLR (channel, &non_keyboard_wait_mask); | |
5044 | ||
5045 | kill (getpid (), SIGCHLD); | |
5046 | } | |
5047 | #endif /* HAVE_PTYS */ | |
ffd56f97 JB |
5048 | /* If we can detect process termination, don't consider the process |
5049 | gone just because its pipe is closed. */ | |
d0d6b7c5 | 5050 | #ifdef SIGCHLD |
d888760c | 5051 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
5052 | ; |
5053 | #endif | |
5054 | else | |
5055 | { | |
5056 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 5057 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 5058 | deactivate_process (proc); |
6bfd98e7 | 5059 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 JB |
5060 | update_status (XPROCESS (proc)); |
5061 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
5062 | XPROCESS (proc)->status | |
5063 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5064 | } | |
5065 | } | |
177c0ea7 | 5066 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
5067 | if (check_connect && FD_ISSET (channel, &Connecting) |
5068 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
5069 | { |
5070 | struct Lisp_Process *p; | |
dd2a17ab KS |
5071 | |
5072 | FD_CLR (channel, &connect_wait_mask); | |
5073 | if (--num_pending_connects < 0) | |
5074 | abort (); | |
5075 | ||
5076 | proc = chan_process[channel]; | |
5077 | if (NILP (proc)) | |
5078 | continue; | |
5079 | ||
5080 | p = XPROCESS (proc); | |
5081 | ||
5082 | #ifdef GNU_LINUX | |
5083 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
5084 | So only use it on systems where it is known to work. */ | |
5085 | { | |
e690ca94 | 5086 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
5087 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
5088 | xerrno = errno; | |
5089 | } | |
5090 | #else | |
44c887be PJ |
5091 | { |
5092 | struct sockaddr pname; | |
5093 | int pnamelen = sizeof(pname); | |
5094 | ||
5095 | /* If connection failed, getpeername will fail. */ | |
5096 | xerrno = 0; | |
5097 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
5098 | { | |
5099 | /* Obtain connect failure code through error slippage. */ | |
5100 | char dummy; | |
dd2a17ab | 5101 | xerrno = errno; |
44c887be PJ |
5102 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
5103 | xerrno = errno; | |
5104 | } | |
5105 | } | |
dd2a17ab KS |
5106 | #endif |
5107 | if (xerrno) | |
5108 | { | |
60f0fb11 | 5109 | p->tick = ++process_tick; |
dd2a17ab KS |
5110 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); |
5111 | deactivate_process (proc); | |
5112 | } | |
5113 | else | |
5114 | { | |
5115 | p->status = Qrun; | |
5116 | /* Execute the sentinel here. If we had relied on | |
5117 | status_notify to do it later, it will read input | |
5118 | from the process before calling the sentinel. */ | |
5119 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 5120 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 5121 | { |
60f0fb11 SM |
5122 | FD_SET (p->infd, &input_wait_mask); |
5123 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
5124 | } |
5125 | } | |
5126 | } | |
5127 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
5128 | } /* end for each file descriptor */ |
5129 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 5130 | |
2beb96f9 | 5131 | unbind_to (count, Qnil); |
d430ee71 | 5132 | |
ffd56f97 JB |
5133 | /* If calling from keyboard input, do not quit |
5134 | since we want to return C-g as an input character. | |
5135 | Otherwise, do pending quit if requested. */ | |
b89a415a | 5136 | if (read_kbd >= 0) |
ffd56f97 JB |
5137 | { |
5138 | /* Prevent input_pending from remaining set if we quit. */ | |
5139 | clear_input_pending (); | |
5140 | QUIT; | |
5141 | } | |
efa2a55c | 5142 | |
d0d6b7c5 JB |
5143 | return got_some_input; |
5144 | } | |
5145 | \f | |
3b9a3dfa RS |
5146 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
5147 | ||
5148 | static Lisp_Object | |
5149 | read_process_output_call (fun_and_args) | |
5150 | Lisp_Object fun_and_args; | |
5151 | { | |
70949dac | 5152 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5153 | } |
5154 | ||
5155 | static Lisp_Object | |
5156 | read_process_output_error_handler (error) | |
5157 | Lisp_Object error; | |
5158 | { | |
5159 | cmd_error_internal (error, "error in process filter: "); | |
5160 | Vinhibit_quit = Qt; | |
5161 | update_echo_area (); | |
833ba342 | 5162 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5163 | return Qt; |
3b9a3dfa RS |
5164 | } |
5165 | ||
d0d6b7c5 JB |
5166 | /* Read pending output from the process channel, |
5167 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5168 | Yield number of decoded characters read. |
d0d6b7c5 | 5169 | |
116c423c | 5170 | This function reads at most 4096 characters. |
d0d6b7c5 | 5171 | If you want to read all available subprocess output, |
0fa1789e KH |
5172 | you must call it repeatedly until it returns zero. |
5173 | ||
5174 | The characters read are decoded according to PROC's coding-system | |
5175 | for decoding. */ | |
d0d6b7c5 | 5176 | |
ff6daed3 | 5177 | static int |
d0d6b7c5 JB |
5178 | read_process_output (proc, channel) |
5179 | Lisp_Object proc; | |
5180 | register int channel; | |
5181 | { | |
8f924df7 | 5182 | register int nbytes; |
d0d6b7c5 | 5183 | char *chars; |
d0d6b7c5 JB |
5184 | register Lisp_Object outstream; |
5185 | register struct buffer *old = current_buffer; | |
5186 | register struct Lisp_Process *p = XPROCESS (proc); | |
5187 | register int opoint; | |
c7580538 | 5188 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5189 | int carryover = p->decoding_carryover; |
116c423c | 5190 | int readmax = 4096; |
d0d6b7c5 | 5191 | |
e690ca94 | 5192 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
5193 | if (carryover) |
5194 | /* See the comment above. */ | |
d5db4077 | 5195 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 5196 | |
e690ca94 KS |
5197 | #ifdef DATAGRAM_SOCKETS |
5198 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5199 | if (DATAGRAM_CHAN_P (channel)) | |
5200 | { | |
5201 | int len = datagram_address[channel].len; | |
39b1da20 | 5202 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5203 | 0, datagram_address[channel].sa, &len); |
5204 | } | |
5205 | else | |
5206 | #endif | |
d0d6b7c5 | 5207 | if (proc_buffered_char[channel] < 0) |
6b61353c | 5208 | { |
39b1da20 | 5209 | nbytes = emacs_read (channel, chars + carryover, readmax); |
6b61353c | 5210 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5211 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5212 | { |
60f0fb11 | 5213 | int delay = p->read_output_delay; |
6b61353c KH |
5214 | if (nbytes < 256) |
5215 | { | |
5216 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5217 | { | |
5218 | if (delay == 0) | |
5219 | process_output_delay_count++; | |
5220 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5221 | } | |
5222 | } | |
39b1da20 | 5223 | else if (delay > 0 && (nbytes == readmax)) |
6b61353c KH |
5224 | { |
5225 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5226 | if (delay == 0) | |
5227 | process_output_delay_count--; | |
5228 | } | |
60f0fb11 | 5229 | p->read_output_delay = delay; |
6b61353c KH |
5230 | if (delay) |
5231 | { | |
60f0fb11 | 5232 | p->read_output_skip = 1; |
6b61353c KH |
5233 | process_output_skip = 1; |
5234 | } | |
5235 | } | |
5236 | #endif | |
5237 | } | |
d0d6b7c5 JB |
5238 | else |
5239 | { | |
ed7a4b2d | 5240 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 5241 | proc_buffered_char[channel] = -1; |
39b1da20 | 5242 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
5243 | if (nbytes < 0) |
5244 | nbytes = 1; | |
d0d6b7c5 | 5245 | else |
1d2fc612 | 5246 | nbytes = nbytes + 1; |
d0d6b7c5 | 5247 | } |
d0d6b7c5 | 5248 | |
60f0fb11 | 5249 | p->decoding_carryover = 0; |
ca65341e | 5250 | |
ed7a4b2d | 5251 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5252 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5253 | if (nbytes <= 0) |
5254 | { | |
5255 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5256 | return nbytes; | |
5257 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5258 | } | |
d0d6b7c5 | 5259 | |
1d2fc612 | 5260 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5261 | nbytes += carryover; |
0fa1789e | 5262 | |
1d2fc612 | 5263 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
5264 | outstream = p->filter; |
5265 | if (!NILP (outstream)) | |
5266 | { | |
177c0ea7 | 5267 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
5268 | hitting ^G when a filter happens to be running won't screw |
5269 | it up. */ | |
aed13378 | 5270 | int count = SPECPDL_INDEX (); |
30c78175 | 5271 | Lisp_Object odeactivate; |
dfc21838 | 5272 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 5273 | Lisp_Object text; |
4da2f5be | 5274 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5275 | int waiting = waiting_for_user_input_p; |
30c78175 | 5276 | |
dfc21838 RS |
5277 | /* No need to gcpro these, because all we do with them later |
5278 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 5279 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
5280 | XSETBUFFER (obuffer, current_buffer); |
5281 | okeymap = current_buffer->keymap; | |
30c78175 | 5282 | |
d0d6b7c5 | 5283 | specbind (Qinhibit_quit, Qt); |
6545aada | 5284 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5285 | |
4da2f5be RS |
5286 | /* In case we get recursively called, |
5287 | and we already saved the match data nonrecursively, | |
5288 | save the same match data in safely recursive fashion. */ | |
5289 | if (outer_running_asynch_code) | |
5290 | { | |
5291 | Lisp_Object tem; | |
5292 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5293 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5294 | restore_search_regs (); | |
5295 | record_unwind_save_match_data (); | |
5296 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5297 | } |
5298 | ||
5299 | /* For speed, if a search happens within this code, | |
5300 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5301 | running_asynch_code = 1; |
4da2f5be | 5302 | |
5bbf78c1 KH |
5303 | decode_coding_c_string (coding, chars, nbytes, Qt); |
5304 | text = coding->dst_object; | |
5bbf78c1 | 5305 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5306 | /* A new coding system might be found. */ |
5bbf78c1 | 5307 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5308 | { |
5bbf78c1 | 5309 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d KH |
5310 | |
5311 | /* Don't call setup_coding_system for | |
5312 | proc_decode_coding_system[channel] here. It is done in | |
5313 | detect_coding called via decode_coding above. */ | |
5314 | ||
5315 | /* If a coding system for encoding is not yet decided, we set | |
5316 | it as the same as coding-system for decoding. | |
5317 | ||
5318 | But, before doing that we must check if | |
5319 | proc_encode_coding_system[p->outfd] surely points to a | |
5320 | valid memory because p->outfd will be changed once EOF is | |
5321 | sent to the process. */ | |
5322 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5323 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5324 | { |
76d812bb KH |
5325 | p->encode_coding_system |
5326 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5327 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5328 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5329 | } |
5330 | } | |
51c6067d | 5331 | |
dd8c7a53 KH |
5332 | if (coding->carryover_bytes > 0) |
5333 | { | |
04961398 KH |
5334 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5335 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
8f924df7 | 5336 | bcopy (coding->carryover, SDATA (p->decoding_buf), |
dd8c7a53 | 5337 | coding->carryover_bytes); |
8c406a9b | 5338 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5339 | } |
e430e5ba | 5340 | if (SBYTES (text) > 0) |
dd97db06 KH |
5341 | internal_condition_case_1 (read_process_output_call, |
5342 | Fcons (outstream, | |
5343 | Fcons (proc, Fcons (text, Qnil))), | |
5344 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5345 | read_process_output_error_handler); | |
4da2f5be RS |
5346 | |
5347 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5348 | restore_search_regs (); |
4da2f5be | 5349 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5350 | |
592ce97f | 5351 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5352 | Vdeactivate_mark = odeactivate; |
5353 | ||
bbce7d72 RS |
5354 | /* Restore waiting_for_user_input_p as it was |
5355 | when we were called, in case the filter clobbered it. */ | |
5356 | waiting_for_user_input_p = waiting; | |
5357 | ||
7973cfa8 RS |
5358 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5359 | because we might have changed minor modes or other things | |
5360 | that affect key bindings. */ | |
dfc21838 RS |
5361 | if (! EQ (Fcurrent_buffer (), obuffer) |
5362 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5363 | #endif |
927e08be RS |
5364 | /* But do it only if the caller is actually going to read events. |
5365 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5366 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5367 | if (waiting_for_user_input_p == -1) |
5368 | record_asynch_buffer_change (); | |
d72534ba | 5369 | |
2ea6d561 | 5370 | unbind_to (count, Qnil); |
e430e5ba | 5371 | return nbytes; |
d0d6b7c5 JB |
5372 | } |
5373 | ||
5374 | /* If no filter, write into buffer if it isn't dead. */ | |
5375 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
5376 | { | |
b0310da4 | 5377 | Lisp_Object old_read_only; |
12ca5cdf | 5378 | int old_begv, old_zv; |
d8a2934e | 5379 | int old_begv_byte, old_zv_byte; |
30c78175 | 5380 | Lisp_Object odeactivate; |
d8a2934e RS |
5381 | int before, before_byte; |
5382 | int opoint_byte; | |
ed7a4b2d | 5383 | Lisp_Object text; |
926b7e5e | 5384 | struct buffer *b; |
30c78175 RS |
5385 | |
5386 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 JB |
5387 | |
5388 | Fset_buffer (p->buffer); | |
6ec8bbd2 | 5389 | opoint = PT; |
d8a2934e | 5390 | opoint_byte = PT_BYTE; |
b0310da4 | 5391 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
5392 | old_begv = BEGV; |
5393 | old_zv = ZV; | |
d8a2934e RS |
5394 | old_begv_byte = BEGV_BYTE; |
5395 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
5396 | |
5397 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
5398 | |
5399 | /* Insert new output into buffer | |
5400 | at the current end-of-output marker, | |
5401 | thus preserving logical ordering of input and output. */ | |
5402 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5403 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5404 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5405 | ZV_BYTE)); | |
d0d6b7c5 | 5406 | else |
d8a2934e | 5407 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5408 | before = PT; |
d8a2934e | 5409 | before_byte = PT_BYTE; |
b0310da4 JB |
5410 | |
5411 | /* If the output marker is outside of the visible region, save | |
5412 | the restriction and widen. */ | |
6ec8bbd2 | 5413 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5414 | Fwiden (); |
5415 | ||
5bbf78c1 KH |
5416 | decode_coding_c_string (coding, chars, nbytes, Qt); |
5417 | text = coding->dst_object; | |
5418 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5419 | /* A new coding system might be found. See the comment in the |
5420 | similar code in the previous `if' block. */ | |
5bbf78c1 | 5421 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5422 | { |
5bbf78c1 | 5423 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d | 5424 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5425 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5426 | { |
76d812bb KH |
5427 | p->encode_coding_system |
5428 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5429 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5430 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5431 | } |
5432 | } | |
dd8c7a53 KH |
5433 | if (coding->carryover_bytes > 0) |
5434 | { | |
04961398 KH |
5435 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5436 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
8f924df7 | 5437 | bcopy (coding->carryover, SDATA (p->decoding_buf), |
dd8c7a53 | 5438 | coding->carryover_bytes); |
8c406a9b | 5439 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5440 | } |
d69864bf KH |
5441 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5442 | if (NILP (current_buffer->enable_multibyte_characters) | |
5443 | != ! STRING_MULTIBYTE (text)) | |
5444 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5445 | ? Fstring_as_unibyte (text) |
03f04413 | 5446 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5447 | /* Insert before markers in case we are inserting where |
5448 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5449 | insert_from_string_before_markers (text, 0, 0, |
5450 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5451 | |
926b7e5e GM |
5452 | /* Make sure the process marker's position is valid when the |
5453 | process buffer is changed in the signal_after_change above. | |
5454 | W3 is known to do that. */ | |
5455 | if (BUFFERP (p->buffer) | |
5456 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5457 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5458 | else | |
5459 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5460 | |
d0d6b7c5 JB |
5461 | update_mode_lines++; |
5462 | ||
12ca5cdf RS |
5463 | /* Make sure opoint and the old restrictions |
5464 | float ahead of any new text just as point would. */ | |
5465 | if (opoint >= before) | |
d8a2934e RS |
5466 | { |
5467 | opoint += PT - before; | |
5468 | opoint_byte += PT_BYTE - before_byte; | |
5469 | } | |
12ca5cdf | 5470 | if (old_begv > before) |
d8a2934e RS |
5471 | { |
5472 | old_begv += PT - before; | |
5473 | old_begv_byte += PT_BYTE - before_byte; | |
5474 | } | |
12ca5cdf | 5475 | if (old_zv >= before) |
d8a2934e RS |
5476 | { |
5477 | old_zv += PT - before; | |
5478 | old_zv_byte += PT_BYTE - before_byte; | |
5479 | } | |
12ca5cdf | 5480 | |
b0310da4 | 5481 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5482 | if (old_begv != BEGV || old_zv != ZV) |
5483 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5484 | |
592ce97f | 5485 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5486 | Vdeactivate_mark = odeactivate; |
5487 | ||
b0310da4 | 5488 | current_buffer->read_only = old_read_only; |
d8a2934e | 5489 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 JB |
5490 | set_buffer_internal (old); |
5491 | } | |
1d2fc612 | 5492 | return nbytes; |
d0d6b7c5 JB |
5493 | } |
5494 | ||
5495 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
5496 | 0, 0, 0, | |
f3d9532b | 5497 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
fdb82f93 PJ |
5498 | This is intended for use by asynchronous process output filters and sentinels. */) |
5499 | () | |
d0d6b7c5 | 5500 | { |
8b4d685f | 5501 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
5502 | } |
5503 | \f | |
5504 | /* Sending data to subprocess */ | |
5505 | ||
5506 | jmp_buf send_process_frame; | |
0daad115 | 5507 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5508 | |
5509 | SIGTYPE | |
5510 | send_process_trap () | |
5511 | { | |
333f1b6f | 5512 | SIGNAL_THREAD_CHECK (SIGPIPE); |
c8f44005 | 5513 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5514 | longjmp (send_process_frame, 1); |
5515 | } | |
5516 | ||
4556b700 RS |
5517 | /* Send some data to process PROC. |
5518 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5519 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5520 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5521 | |
a92e4183 KH |
5522 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5523 | for encoding before it is sent. | |
1fb0098c GM |
5524 | |
5525 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5526 | |
ff6daed3 | 5527 | static void |
4556b700 | 5528 | send_process (proc, buf, len, object) |
ecd1f654 | 5529 | volatile Lisp_Object proc; |
0daad115 GM |
5530 | unsigned char *volatile buf; |
5531 | volatile int len; | |
5532 | volatile Lisp_Object object; | |
d0d6b7c5 | 5533 | { |
ecd1f654 | 5534 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5535 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5536 | int rv; |
0fa1789e | 5537 | struct coding_system *coding; |
6044e593 | 5538 | struct gcpro gcpro1; |
41c4895c | 5539 | SIGTYPE (*volatile old_sigpipe) (); |
6044e593 RS |
5540 | |
5541 | GCPRO1 (object); | |
d0d6b7c5 | 5542 | |
6bfd98e7 | 5543 | if (p->raw_status_new) |
6b61353c KH |
5544 | update_status (p); |
5545 | if (! EQ (p->status, Qrun)) | |
5546 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5547 | if (p->outfd < 0) |
6b61353c | 5548 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5549 | |
60f0fb11 | 5550 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5551 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5552 | |
ed7a4b2d KH |
5553 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5554 | || (BUFFERP (object) | |
a92e4183 KH |
5555 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5556 | || EQ (object, Qt)) | |
278bfdd6 | 5557 | { |
6b61353c | 5558 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
278bfdd6 KH |
5559 | /* The coding system for encoding was changed to raw-text |
5560 | because we sent a unibyte text previously. Now we are | |
5561 | sending a multibyte text, thus we must encode it by the | |
6b61353c KH |
5562 | original coding system specified for the current process. */ |
5563 | setup_coding_system (p->encode_coding_system, coding); | |
e08bbb84 | 5564 | coding->src_multibyte = 1; |
278bfdd6 KH |
5565 | } |
5566 | else | |
5567 | { | |
a92e4183 KH |
5568 | /* For sending a unibyte text, character code conversion should |
5569 | not take place but EOL conversion should. So, setup raw-text | |
5570 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5571 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5572 | { |
5573 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5574 | { | |
5575 | /* But, before changing the coding, we must flush out data. */ | |
5576 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5577 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5578 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5579 | } |
5bbf78c1 KH |
5580 | setup_coding_system (raw_text_coding_system |
5581 | (Vlast_coding_system_used), | |
5582 | coding); | |
e08bbb84 | 5583 | coding->src_multibyte = 0; |
a92e4183 | 5584 | } |
278bfdd6 | 5585 | } |
a4a37e65 KH |
5586 | coding->dst_multibyte = 0; |
5587 | ||
ed7a4b2d | 5588 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5589 | { |
5bbf78c1 | 5590 | coding->dst_object = Qt; |
ed7a4b2d | 5591 | if (BUFFERP (object)) |
0fa1789e | 5592 | { |
5bbf78c1 KH |
5593 | int from_byte, from, to; |
5594 | int save_pt, save_pt_byte; | |
5595 | struct buffer *cur = current_buffer; | |
5596 | ||
5597 | set_buffer_internal (XBUFFER (object)); | |
5598 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5599 | ||
5600 | from_byte = PTR_BYTE_POS (buf); | |
5601 | from = BYTE_TO_CHAR (from_byte); | |
5602 | to = BYTE_TO_CHAR (from_byte + len); | |
5603 | TEMP_SET_PT_BOTH (from, from_byte); | |
5604 | encode_coding_object (coding, object, from, from_byte, | |
5605 | to, from_byte + len, Qt); | |
5606 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5607 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5608 | } |
5609 | else if (STRINGP (object)) | |
5610 | { | |
5bbf78c1 | 5611 | encode_coding_string (coding, object, 1); |
0fa1789e | 5612 | } |
5bbf78c1 | 5613 | else |
452294c2 | 5614 | { |
5bbf78c1 KH |
5615 | coding->dst_object = make_unibyte_string (buf, len); |
5616 | coding->produced = len; | |
452294c2 | 5617 | } |
ed7a4b2d | 5618 | |
e7fbaa65 | 5619 | len = coding->produced; |
8f924df7 | 5620 | buf = SDATA (coding->dst_object); |
0fa1789e | 5621 | } |
d0d6b7c5 | 5622 | |
4556b700 RS |
5623 | if (pty_max_bytes == 0) |
5624 | { | |
5625 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5626 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5627 | if (pty_max_bytes < 0) |
5628 | pty_max_bytes = 250; | |
5629 | #else | |
5630 | pty_max_bytes = 250; | |
5631 | #endif | |
5632 | /* Deduct one, to leave space for the eof. */ | |
5633 | pty_max_bytes--; | |
5634 | } | |
5635 | ||
0daad115 GM |
5636 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5637 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5638 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5639 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5640 | { |
5641 | process_sent_to = proc; | |
5642 | while (len > 0) | |
5643 | { | |
5644 | int this = len; | |
93b4f699 | 5645 | |
0daad115 GM |
5646 | /* Decide how much data we can send in one batch. |
5647 | Long lines need to be split into multiple batches. */ | |
60f0fb11 | 5648 | if (p->pty_flag) |
0daad115 | 5649 | { |
c0ec53ad SM |
5650 | /* Starting this at zero is always correct when not the first |
5651 | iteration because the previous iteration ended by sending C-d. | |
0daad115 GM |
5652 | It may not be correct for the first iteration |
5653 | if a partial line was sent in a separate send_process call. | |
5654 | If that proves worth handling, we need to save linepos | |
5655 | in the process object. */ | |
5656 | int linepos = 0; | |
5657 | unsigned char *ptr = (unsigned char *) buf; | |
5658 | unsigned char *end = (unsigned char *) buf + len; | |
5659 | ||
5660 | /* Scan through this text for a line that is too long. */ | |
5661 | while (ptr != end && linepos < pty_max_bytes) | |
5662 | { | |
5663 | if (*ptr == '\n') | |
5664 | linepos = 0; | |
5665 | else | |
5666 | linepos++; | |
5667 | ptr++; | |
5668 | } | |
5669 | /* If we found one, break the line there | |
5670 | and put in a C-d to force the buffer through. */ | |
5671 | this = ptr - buf; | |
5672 | } | |
93b4f699 | 5673 | |
0daad115 GM |
5674 | /* Send this batch, using one or more write calls. */ |
5675 | while (this > 0) | |
5676 | { | |
60f0fb11 | 5677 | int outfd = p->outfd; |
0daad115 | 5678 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5679 | #ifdef DATAGRAM_SOCKETS |
5680 | if (DATAGRAM_CHAN_P (outfd)) | |
5681 | { | |
5682 | rv = sendto (outfd, (char *) buf, this, | |
5683 | 0, datagram_address[outfd].sa, | |
5684 | datagram_address[outfd].len); | |
5685 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5686 | { |
5687 | signal (SIGPIPE, old_sigpipe); | |
5688 | report_file_error ("sending datagram", | |
5689 | Fcons (proc, Qnil)); | |
5690 | } | |
e690ca94 KS |
5691 | } |
5692 | else | |
5693 | #endif | |
6b61353c KH |
5694 | { |
5695 | rv = emacs_write (outfd, (char *) buf, this); | |
5696 | #ifdef ADAPTIVE_READ_BUFFERING | |
60f0fb11 SM |
5697 | if (p->read_output_delay > 0 |
5698 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5699 | { |
60f0fb11 | 5700 | p->read_output_delay = 0; |
6b61353c | 5701 | process_output_delay_count--; |
60f0fb11 | 5702 | p->read_output_skip = 0; |
6b61353c KH |
5703 | } |
5704 | #endif | |
5705 | } | |
0daad115 | 5706 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5707 | |
0daad115 GM |
5708 | if (rv < 0) |
5709 | { | |
5710 | if (0 | |
d0d6b7c5 | 5711 | #ifdef EWOULDBLOCK |
0daad115 | 5712 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5713 | #endif |
5714 | #ifdef EAGAIN | |
0daad115 | 5715 | || errno == EAGAIN |
d0d6b7c5 | 5716 | #endif |
0daad115 | 5717 | ) |
177c0ea7 | 5718 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5719 | that may allow the program |
5720 | to finish doing output and read more. */ | |
5721 | { | |
0daad115 | 5722 | int offset = 0; |
4556b700 | 5723 | |
3433b6bd | 5724 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5725 | /* A gross hack to work around a bug in FreeBSD. |
5726 | In the following sequence, read(2) returns | |
5727 | bogus data: | |
5728 | ||
5729 | write(2) 1022 bytes | |
5730 | write(2) 954 bytes, get EAGAIN | |
5731 | read(2) 1024 bytes in process_read_output | |
5732 | read(2) 11 bytes in process_read_output | |
5733 | ||
5734 | That is, read(2) returns more bytes than have | |
5735 | ever been written successfully. The 1033 bytes | |
5736 | read are the 1022 bytes written successfully | |
5737 | after processing (for example with CRs added if | |
5738 | the terminal is set up that way which it is | |
5739 | here). The same bytes will be seen again in a | |
5740 | later read(2), without the CRs. */ | |
177c0ea7 | 5741 | |
0daad115 GM |
5742 | if (errno == EAGAIN) |
5743 | { | |
5744 | int flags = FWRITE; | |
60f0fb11 | 5745 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5746 | } |
3433b6bd | 5747 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5748 | |
0daad115 GM |
5749 | /* Running filters might relocate buffers or strings. |
5750 | Arrange to relocate BUF. */ | |
5751 | if (BUFFERP (object)) | |
5752 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); | |
5753 | else if (STRINGP (object)) | |
d5db4077 | 5754 | offset = buf - SDATA (object); |
0daad115 | 5755 | |
f3e6605c | 5756 | #ifdef EMACS_HAS_USECS |
214d6069 | 5757 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5758 | #else |
214d6069 | 5759 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5760 | #endif |
4556b700 | 5761 | |
0daad115 GM |
5762 | if (BUFFERP (object)) |
5763 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); | |
5764 | else if (STRINGP (object)) | |
d5db4077 | 5765 | buf = offset + SDATA (object); |
4556b700 | 5766 | |
0daad115 GM |
5767 | rv = 0; |
5768 | } | |
5769 | else | |
5770 | /* This is a real error. */ | |
5771 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5772 | } | |
5773 | buf += rv; | |
5774 | len -= rv; | |
5775 | this -= rv; | |
5776 | } | |
f76475ad | 5777 | |
d888760c | 5778 | /* If we sent just part of the string, put in an EOF (C-d) |
0daad115 GM |
5779 | to force it through, before we send the rest. */ |
5780 | if (len > 0) | |
5781 | Fprocess_send_eof (proc); | |
5782 | } | |
5783 | } | |
d0d6b7c5 JB |
5784 | else |
5785 | { | |
0ff69270 | 5786 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5787 | proc = process_sent_to; |
6b61353c | 5788 | p = XPROCESS (proc); |
6bfd98e7 | 5789 | p->raw_status_new = 0; |
6b61353c | 5790 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); |
60f0fb11 | 5791 | p->tick = ++process_tick; |
d0d6b7c5 | 5792 | deactivate_process (proc); |
6b61353c | 5793 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5794 | } |
6044e593 RS |
5795 | |
5796 | UNGCPRO; | |
d0d6b7c5 JB |
5797 | } |
5798 | ||
5799 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5800 | 3, 3, 0, |
5801 | doc: /* Send current contents of region as input to PROCESS. | |
5802 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5803 | nil, indicating the current buffer's process. | |
5804 | Called from program, takes three arguments, PROCESS, START and END. | |
5805 | If the region is more than 500 characters long, | |
5806 | it is sent in several bunches. This may happen even for shorter regions. | |
5807 | Output from processes can arrive in between bunches. */) | |
5808 | (process, start, end) | |
d0d6b7c5 JB |
5809 | Lisp_Object process, start, end; |
5810 | { | |
5811 | Lisp_Object proc; | |
1b234f64 | 5812 | int start1, end1; |
d0d6b7c5 JB |
5813 | |
5814 | proc = get_process (process); | |
5815 | validate_region (&start, &end); | |
1b234f64 KH |
5816 | |
5817 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5818 | move_gap (XINT (start)); | |
5819 | ||
5820 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5821 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5822 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
5823 | Fcurrent_buffer ()); | |
5824 | ||
d0d6b7c5 JB |
5825 | return Qnil; |
5826 | } | |
5827 | ||
5828 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5829 | 2, 2, 0, |
5830 | doc: /* Send PROCESS the contents of STRING as input. | |
5831 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5832 | nil, indicating the current buffer's process. | |
5833 | If STRING is more than 500 characters long, | |
5834 | it is sent in several bunches. This may happen even for shorter strings. | |
5835 | Output from processes can arrive in between bunches. */) | |
5836 | (process, string) | |
d0d6b7c5 JB |
5837 | Lisp_Object process, string; |
5838 | { | |
5839 | Lisp_Object proc; | |
b7826503 | 5840 | CHECK_STRING (string); |
d0d6b7c5 | 5841 | proc = get_process (process); |
1b234f64 KH |
5842 | send_process (proc, SDATA (string), |
5843 | SBYTES (string), string); | |
d0d6b7c5 JB |
5844 | return Qnil; |
5845 | } | |
5846 | \f | |
16782258 JD |
5847 | /* Return the foreground process group for the tty/pty that |
5848 | the process P uses. */ | |
5849 | static int | |
5850 | emacs_get_tty_pgrp (p) | |
5851 | struct Lisp_Process *p; | |
5852 | { | |
5853 | int gid = -1; | |
5854 | ||
f3d9532b | 5855 | #ifdef TIOCGPGRP |
60f0fb11 | 5856 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5857 | { |
5858 | int fd; | |
5859 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5860 | master side. Try the slave side. */ | |
eef60308 | 5861 | fd = emacs_open (SDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5862 | |
5863 | if (fd != -1) | |
5864 | { | |
5865 | ioctl (fd, TIOCGPGRP, &gid); | |
5866 | emacs_close (fd); | |
5867 | } | |
5868 | } | |
5869 | #endif /* defined (TIOCGPGRP ) */ | |
5870 | ||
5871 | return gid; | |
5872 | } | |
5873 | ||
b81ea5ef RS |
5874 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5875 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5876 | doc: /* Return t if PROCESS has given the terminal to a child. |
5877 | If the operating system does not make it possible to find out, | |
5878 | return t unconditionally. */) | |
5879 | (process) | |
b81ea5ef RS |
5880 | Lisp_Object process; |
5881 | { | |
5882 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5883 | in a way that will cause returning t. */ | |
16782258 | 5884 | int gid; |
b81ea5ef RS |
5885 | Lisp_Object proc; |
5886 | struct Lisp_Process *p; | |
5887 | ||
5888 | proc = get_process (process); | |
5889 | p = XPROCESS (proc); | |
5890 | ||
d888760c | 5891 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5892 | error ("Process %s is not a subprocess", |
d5db4077 | 5893 | SDATA (p->name)); |
60f0fb11 | 5894 | if (p->infd < 0) |
b81ea5ef | 5895 | error ("Process %s is not active", |
d5db4077 | 5896 | SDATA (p->name)); |
b81ea5ef | 5897 | |
16782258 | 5898 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5899 | |
6bfd98e7 | 5900 | if (gid == p->pid) |
b81ea5ef RS |
5901 | return Qnil; |
5902 | return Qt; | |
5903 | } | |
5904 | \f | |
d0d6b7c5 | 5905 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5906 | If CURRENT_GROUP is t, that means send to the process group |
5907 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5908 | This is used for various commands in shell mode. |
b81ea5ef RS |
5909 | If CURRENT_GROUP is lambda, that means send to the process group |
5910 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5911 | ||
d0d6b7c5 | 5912 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5913 | right away. |
5914 | ||
5915 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5916 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5917 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5918 | |
f9738840 | 5919 | static void |
d0d6b7c5 JB |
5920 | process_send_signal (process, signo, current_group, nomsg) |
5921 | Lisp_Object process; | |
5922 | int signo; | |
5923 | Lisp_Object current_group; | |
5924 | int nomsg; | |
5925 | { | |
5926 | Lisp_Object proc; | |
5927 | register struct Lisp_Process *p; | |
5928 | int gid; | |
5929 | int no_pgrp = 0; | |
5930 | ||
5931 | proc = get_process (process); | |
5932 | p = XPROCESS (proc); | |
5933 | ||
d888760c | 5934 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5935 | error ("Process %s is not a subprocess", |
d5db4077 | 5936 | SDATA (p->name)); |
60f0fb11 | 5937 | if (p->infd < 0) |
d0d6b7c5 | 5938 | error ("Process %s is not active", |
d5db4077 | 5939 | SDATA (p->name)); |
d0d6b7c5 | 5940 | |
60f0fb11 | 5941 | if (!p->pty_flag) |
d0d6b7c5 JB |
5942 | current_group = Qnil; |
5943 | ||
d0d6b7c5 | 5944 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5945 | if (NILP (current_group)) |
5946 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5947 | gid = p->pid; |
2af70a0c | 5948 | else |
d0d6b7c5 | 5949 | { |
b0310da4 | 5950 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5951 | /* If possible, send signals to the entire pgrp |
5952 | by sending an input character to it. */ | |
b0310da4 | 5953 | |
6be429b1 JB |
5954 | /* TERMIOS is the latest and bestest, and seems most likely to |
5955 | work. If the system has it, use it. */ | |
5956 | #ifdef HAVE_TERMIOS | |
5957 | struct termios t; | |
7f916a36 RS |
5958 | cc_t *sig_char = NULL; |
5959 | ||
60f0fb11 | 5960 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5961 | |
5962 | switch (signo) | |
5963 | { | |
5964 | case SIGINT: | |
7f916a36 RS |
5965 | sig_char = &t.c_cc[VINTR]; |
5966 | break; | |
6be429b1 JB |
5967 | |
5968 | case SIGQUIT: | |
7f916a36 RS |
5969 | sig_char = &t.c_cc[VQUIT]; |
5970 | break; | |
6be429b1 JB |
5971 | |
5972 | case SIGTSTP: | |
d0adf46f | 5973 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5974 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5975 | #else |
7f916a36 | 5976 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5977 | #endif |
7f916a36 | 5978 | break; |
6be429b1 JB |
5979 | } |
5980 | ||
ca4313d5 | 5981 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5982 | { |
5983 | send_process (proc, sig_char, 1, Qnil); | |
5984 | return; | |
5985 | } | |
5986 | /* If we can't send the signal with a character, | |
5987 | fall through and send it another way. */ | |
6be429b1 JB |
5988 | #else /* ! HAVE_TERMIOS */ |
5989 | ||
b0310da4 JB |
5990 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5991 | current control characters. */ | |
d0d6b7c5 | 5992 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5993 | |
d0d6b7c5 JB |
5994 | struct tchars c; |
5995 | struct ltchars lc; | |
5996 | ||
5997 | switch (signo) | |
5998 | { | |
5999 | case SIGINT: | |
60f0fb11 | 6000 | ioctl (p->infd, TIOCGETC, &c); |
4556b700 | 6001 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 6002 | return; |
d0d6b7c5 | 6003 | case SIGQUIT: |
60f0fb11 | 6004 | ioctl (p->infd, TIOCGETC, &c); |
4556b700 | 6005 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 6006 | return; |
0ad77c54 | 6007 | #ifdef SIGTSTP |
d0d6b7c5 | 6008 | case SIGTSTP: |
60f0fb11 | 6009 | ioctl (p->infd, TIOCGLTC, &lc); |
4556b700 | 6010 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 6011 | return; |
b0310da4 | 6012 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 6013 | } |
b0310da4 JB |
6014 | |
6015 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
6016 | ||
6017 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
6018 | characters. */ | |
6019 | #ifdef TCGETA | |
d0d6b7c5 JB |
6020 | struct termio t; |
6021 | switch (signo) | |
6022 | { | |
6023 | case SIGINT: | |
60f0fb11 | 6024 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 6025 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 6026 | return; |
d0d6b7c5 | 6027 | case SIGQUIT: |
60f0fb11 | 6028 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 6029 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 6030 | return; |
7d79e3b4 | 6031 | #ifdef SIGTSTP |
d0d6b7c5 | 6032 | case SIGTSTP: |
60f0fb11 | 6033 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 6034 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 6035 | return; |
b0310da4 | 6036 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 6037 | } |
b0310da4 JB |
6038 | #else /* ! defined (TCGETA) */ |
6039 | Your configuration files are messed up. | |
6040 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
6041 | you'd better be using one of the alternatives above! */ | |
6042 | #endif /* ! defined (TCGETA) */ | |
6043 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
eef60308 | 6044 | /* In this case, the code above should alway return. */ |
20505336 | 6045 | abort (); |
f1c206fc RS |
6046 | #endif /* ! defined HAVE_TERMIOS */ |
6047 | ||
6048 | /* The code above may fall through if it can't | |
6049 | handle the signal. */ | |
20505336 | 6050 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 6051 | |
177c0ea7 | 6052 | #ifdef TIOCGPGRP |
2af70a0c | 6053 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
6054 | Otherwise, use the pty to get the pgrp. |
6055 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
6056 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
6057 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
6058 | His patch indicates that if TIOCGPGRP returns an error, then |
6059 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 6060 | |
16782258 | 6061 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 6062 | |
16782258 JD |
6063 | if (gid == -1) |
6064 | /* If we can't get the information, assume | |
6065 | the shell owns the tty. */ | |
6bfd98e7 | 6066 | gid = p->pid; |
2af70a0c RS |
6067 | |
6068 | /* It is not clear whether anything really can set GID to -1. | |
6069 | Perhaps on some system one of those ioctls can or could do so. | |
6070 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
6071 | if (gid == -1) |
6072 | no_pgrp = 1; | |
b0310da4 | 6073 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
6074 | /* Can't select pgrps on this system, so we know that |
6075 | the child itself heads the pgrp. */ | |
6bfd98e7 | 6076 | gid = p->pid; |
301c3fe4 | 6077 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
6078 | |
6079 | /* If current_group is lambda, and the shell owns the terminal, | |
6080 | don't send any signal. */ | |
6bfd98e7 | 6081 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 6082 | return; |
d0d6b7c5 | 6083 | } |
d0d6b7c5 JB |
6084 | |
6085 | switch (signo) | |
6086 | { | |
6087 | #ifdef SIGCONT | |
6088 | case SIGCONT: | |
6bfd98e7 | 6089 | p->raw_status_new = 0; |
d0d6b7c5 | 6090 | p->status = Qrun; |
60f0fb11 | 6091 | p->tick = ++process_tick; |
d0d6b7c5 | 6092 | if (!nomsg) |
ff6daed3 | 6093 | status_notify (NULL); |
d0d6b7c5 | 6094 | break; |
301c3fe4 | 6095 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 6096 | case SIGINT: |
d0d6b7c5 | 6097 | case SIGQUIT: |
d0d6b7c5 | 6098 | case SIGKILL: |
60f0fb11 | 6099 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
6100 | break; |
6101 | } | |
6102 | ||
6103 | /* If we don't have process groups, send the signal to the immediate | |
6104 | subprocess. That isn't really right, but it's better than any | |
6105 | obvious alternative. */ | |
6106 | if (no_pgrp) | |
6107 | { | |
6bfd98e7 | 6108 | kill (p->pid, signo); |
d0d6b7c5 JB |
6109 | return; |
6110 | } | |
6111 | ||
6112 | /* gid may be a pid, or minus a pgrp's number */ | |
6113 | #ifdef TIOCSIGSEND | |
6114 | if (!NILP (current_group)) | |
16782258 | 6115 | { |
60f0fb11 | 6116 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
6117 | EMACS_KILLPG (gid, signo); |
6118 | } | |
d0d6b7c5 JB |
6119 | else |
6120 | { | |
6bfd98e7 | 6121 | gid = - p->pid; |
d0d6b7c5 JB |
6122 | kill (gid, signo); |
6123 | } | |
301c3fe4 | 6124 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 6125 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 6126 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
6127 | } |
6128 | ||
6129 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
6130 | doc: /* Interrupt process PROCESS. |
6131 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 6132 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
6133 | Second arg CURRENT-GROUP non-nil means send signal to |
6134 | the current process-group of the process's controlling terminal | |
6135 | rather than to the process's own process group. | |
6136 | If the process is a shell, this means interrupt current subjob | |
6137 | rather than the shell. | |
6138 | ||
6139 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
6140 | don't send the signal. */) | |
6141 | (process, current_group) | |
d0d6b7c5 JB |
6142 | Lisp_Object process, current_group; |
6143 | { | |
6144 | process_send_signal (process, SIGINT, current_group, 0); | |
6145 | return process; | |
6146 | } | |
6147 | ||
6148 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
6149 | doc: /* Kill process PROCESS. May be process or name of one. |
6150 | See function `interrupt-process' for more details on usage. */) | |
6151 | (process, current_group) | |
d0d6b7c5 JB |
6152 | Lisp_Object process, current_group; |
6153 | { | |
6154 | process_send_signal (process, SIGKILL, current_group, 0); | |
6155 | return process; | |
6156 | } | |
6157 | ||
6158 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
6159 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
6160 | See function `interrupt-process' for more details on usage. */) | |
6161 | (process, current_group) | |
d0d6b7c5 JB |
6162 | Lisp_Object process, current_group; |
6163 | { | |
6164 | process_send_signal (process, SIGQUIT, current_group, 0); | |
6165 | return process; | |
6166 | } | |
6167 | ||
6168 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6169 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6170 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6171 | If PROCESS is a network or serial process, inhibit handling of incoming |
6172 | traffic. */) | |
fdb82f93 | 6173 | (process, current_group) |
d0d6b7c5 JB |
6174 | Lisp_Object process, current_group; |
6175 | { | |
e690ca94 | 6176 | #ifdef HAVE_SOCKETS |
d888760c | 6177 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6178 | { |
6179 | struct Lisp_Process *p; | |
177c0ea7 | 6180 | |
e690ca94 KS |
6181 | p = XPROCESS (process); |
6182 | if (NILP (p->command) | |
60f0fb11 | 6183 | && p->infd >= 0) |
e690ca94 | 6184 | { |
60f0fb11 SM |
6185 | FD_CLR (p->infd, &input_wait_mask); |
6186 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
6187 | } |
6188 | p->command = Qt; | |
6189 | return process; | |
6190 | } | |
6191 | #endif | |
d0d6b7c5 | 6192 | #ifndef SIGTSTP |
a9a73d6c | 6193 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6194 | #else |
6195 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6196 | #endif | |
6197 | return process; | |
6198 | } | |
6199 | ||
6200 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6201 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6202 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6203 | If PROCESS is a network or serial process, resume handling of incoming |
6204 | traffic. */) | |
fdb82f93 | 6205 | (process, current_group) |
d0d6b7c5 JB |
6206 | Lisp_Object process, current_group; |
6207 | { | |
e690ca94 | 6208 | #ifdef HAVE_SOCKETS |
d888760c | 6209 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6210 | { |
6211 | struct Lisp_Process *p; | |
6212 | ||
6213 | p = XPROCESS (process); | |
6214 | if (EQ (p->command, Qt) | |
60f0fb11 | 6215 | && p->infd >= 0 |
e690ca94 KS |
6216 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
6217 | { | |
60f0fb11 SM |
6218 | FD_SET (p->infd, &input_wait_mask); |
6219 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6220 | #ifdef WINDOWSNT |
6221 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6222 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
6223 | #endif | |
6224 | #ifdef HAVE_TERMIOS | |
6225 | tcflush (p->infd, TCIFLUSH); | |
6226 | #endif | |
e690ca94 KS |
6227 | } |
6228 | p->command = Qnil; | |
6229 | return process; | |
6230 | } | |
6231 | #endif | |
d0d6b7c5 JB |
6232 | #ifdef SIGCONT |
6233 | process_send_signal (process, SIGCONT, current_group, 0); | |
6234 | #else | |
a9a73d6c | 6235 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6236 | #endif |
6237 | return process; | |
6238 | } | |
6239 | ||
6240 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6241 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6242 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6243 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6244 | process to signal; in this case, the process need not be a child of |
6245 | this Emacs. | |
fdb82f93 | 6246 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
6247 | (process, sigcode) |
6248 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 6249 | { |
6bfd98e7 | 6250 | pid_t pid; |
cdd5ea86 KS |
6251 | |
6252 | if (INTEGERP (process)) | |
6253 | { | |
6bfd98e7 SM |
6254 | pid = XINT (process); |
6255 | goto got_it; | |
6256 | } | |
6257 | ||
6258 | if (FLOATP (process)) | |
6259 | { | |
648f6edf | 6260 | pid = (pid_t) XFLOAT_DATA (process); |
cdd5ea86 KS |
6261 | goto got_it; |
6262 | } | |
6263 | ||
6264 | if (STRINGP (process)) | |
6265 | { | |
6266 | Lisp_Object tem; | |
6267 | if (tem = Fget_process (process), NILP (tem)) | |
6268 | { | |
6bfd98e7 SM |
6269 | pid = XINT (Fstring_to_number (process, make_number (10))); |
6270 | if (pid > 0) | |
cdd5ea86 KS |
6271 | goto got_it; |
6272 | } | |
6273 | process = tem; | |
6274 | } | |
6275 | else | |
6276 | process = get_process (process); | |
177c0ea7 | 6277 | |
cdd5ea86 KS |
6278 | if (NILP (process)) |
6279 | return process; | |
6280 | ||
6281 | CHECK_PROCESS (process); | |
6282 | pid = XPROCESS (process)->pid; | |
6bfd98e7 | 6283 | if (pid <= 0) |
cdd5ea86 KS |
6284 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
6285 | ||
6286 | got_it: | |
4766242d | 6287 | |
59324b1d | 6288 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6289 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6290 | XSETINT (sigcode, VALUE) |
6291 | ||
6292 | if (INTEGERP (sigcode)) | |
6293 | ; | |
6294 | else | |
6295 | { | |
6296 | unsigned char *name; | |
6297 | ||
b7826503 | 6298 | CHECK_SYMBOL (sigcode); |
d5db4077 | 6299 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6300 | |
ec0f21f4 | 6301 | if (!strncmp(name, "SIG", 3) || !strncmp(name, "sig", 3)) |
675984ed KS |
6302 | name += 3; |
6303 | ||
4766242d RS |
6304 | if (0) |
6305 | ; | |
59324b1d KS |
6306 | #ifdef SIGUSR1 |
6307 | parse_signal ("usr1", SIGUSR1); | |
6308 | #endif | |
6309 | #ifdef SIGUSR2 | |
6310 | parse_signal ("usr2", SIGUSR2); | |
6311 | #endif | |
6312 | #ifdef SIGTERM | |
6313 | parse_signal ("term", SIGTERM); | |
6314 | #endif | |
4766242d | 6315 | #ifdef SIGHUP |
59324b1d | 6316 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6317 | #endif |
6318 | #ifdef SIGINT | |
59324b1d | 6319 | parse_signal ("int", SIGINT); |
4766242d RS |
6320 | #endif |
6321 | #ifdef SIGQUIT | |
59324b1d | 6322 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6323 | #endif |
6324 | #ifdef SIGILL | |
59324b1d | 6325 | parse_signal ("ill", SIGILL); |
4766242d RS |
6326 | #endif |
6327 | #ifdef SIGABRT | |
59324b1d | 6328 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6329 | #endif |
6330 | #ifdef SIGEMT | |
59324b1d | 6331 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6332 | #endif |
6333 | #ifdef SIGKILL | |
59324b1d | 6334 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6335 | #endif |
6336 | #ifdef SIGFPE | |
59324b1d | 6337 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6338 | #endif |
6339 | #ifdef SIGBUS | |
59324b1d | 6340 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6341 | #endif |
6342 | #ifdef SIGSEGV | |
59324b1d | 6343 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6344 | #endif |
6345 | #ifdef SIGSYS | |
59324b1d | 6346 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6347 | #endif |
6348 | #ifdef SIGPIPE | |
59324b1d | 6349 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6350 | #endif |
6351 | #ifdef SIGALRM | |
59324b1d | 6352 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6353 | #endif |
6354 | #ifdef SIGURG | |
59324b1d | 6355 | parse_signal ("urg", SIGURG); |
4766242d RS |
6356 | #endif |
6357 | #ifdef SIGSTOP | |
59324b1d | 6358 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6359 | #endif |
6360 | #ifdef SIGTSTP | |
59324b1d | 6361 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6362 | #endif |
6363 | #ifdef SIGCONT | |
59324b1d | 6364 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6365 | #endif |
6366 | #ifdef SIGCHLD | |
59324b1d | 6367 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6368 | #endif |
6369 | #ifdef SIGTTIN | |
59324b1d | 6370 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6371 | #endif |
6372 | #ifdef SIGTTOU | |
59324b1d | 6373 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6374 | #endif |
6375 | #ifdef SIGIO | |
59324b1d | 6376 | parse_signal ("io", SIGIO); |
4766242d RS |
6377 | #endif |
6378 | #ifdef SIGXCPU | |
59324b1d | 6379 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6380 | #endif |
6381 | #ifdef SIGXFSZ | |
59324b1d | 6382 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6383 | #endif |
6384 | #ifdef SIGVTALRM | |
59324b1d | 6385 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6386 | #endif |
6387 | #ifdef SIGPROF | |
59324b1d | 6388 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6389 | #endif |
6390 | #ifdef SIGWINCH | |
59324b1d | 6391 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6392 | #endif |
6393 | #ifdef SIGINFO | |
59324b1d | 6394 | parse_signal ("info", SIGINFO); |
4766242d RS |
6395 | #endif |
6396 | else | |
9fa195a2 | 6397 | error ("Undefined signal name %s", name); |
4766242d RS |
6398 | } |
6399 | ||
59324b1d | 6400 | #undef parse_signal |
4766242d | 6401 | |
6bfd98e7 | 6402 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6403 | } |
6404 | ||
6405 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6406 | doc: /* Make PROCESS see end-of-file in its input. |
6407 | EOF comes after any text already sent to it. | |
6408 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6409 | nil, indicating the current buffer's process. | |
6410 | If PROCESS is a network connection, or is a process communicating | |
6411 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6412 | text to PROCESS after you call this function. |
6413 | If PROCESS is a serial process, wait until all output written to the | |
6414 | process has been transmitted to the serial port. */) | |
fdb82f93 | 6415 | (process) |
d0d6b7c5 JB |
6416 | Lisp_Object process; |
6417 | { | |
6418 | Lisp_Object proc; | |
de7fbd09 | 6419 | struct coding_system *coding; |
d0d6b7c5 | 6420 | |
e690ca94 KS |
6421 | if (DATAGRAM_CONN_P (process)) |
6422 | return process; | |
6423 | ||
d0d6b7c5 | 6424 | proc = get_process (process); |
60f0fb11 | 6425 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6426 | |
6427 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6428 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 RS |
6429 | update_status (XPROCESS (proc)); |
6430 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6431 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6432 | |
de7fbd09 KH |
6433 | if (CODING_REQUIRE_FLUSHING (coding)) |
6434 | { | |
6435 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6436 | send_process (proc, "", 0, Qnil); | |
6437 | } | |
6438 | ||
60f0fb11 | 6439 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6440 | send_process (proc, "\004", 1, Qnil); |
a879ee6f | 6441 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c GM |
6442 | { |
6443 | #ifdef HAVE_TERMIOS | |
6444 | if (tcdrain (XPROCESS (proc)->outfd) != 0) | |
6445 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
6446 | #endif | |
6447 | /* Do nothing on Windows because writes are blocking. */ | |
6448 | } | |
d0d6b7c5 JB |
6449 | else |
6450 | { | |
4525f571 RS |
6451 | int old_outfd, new_outfd; |
6452 | ||
93853f3d | 6453 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6454 | /* If this is a network connection, or socketpair is used |
6455 | for communication with the subprocess, call shutdown to cause EOF. | |
6456 | (In some old system, shutdown to socketpair doesn't work. | |
6457 | Then we just can't win.) */ | |
a879ee6f | 6458 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6459 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6460 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6461 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6462 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6463 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6464 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6465 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6466 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6467 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6468 | if (new_outfd < 0) |
6469 | abort (); | |
60f0fb11 | 6470 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6471 | |
6472 | if (!proc_encode_coding_system[new_outfd]) | |
6473 | proc_encode_coding_system[new_outfd] | |
6474 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6475 | bcopy (proc_encode_coding_system[old_outfd], | |
6476 | proc_encode_coding_system[new_outfd], | |
6477 | sizeof (struct coding_system)); | |
6478 | bzero (proc_encode_coding_system[old_outfd], | |
6479 | sizeof (struct coding_system)); | |
6480 | ||
60f0fb11 | 6481 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6482 | } |
d0d6b7c5 JB |
6483 | return process; |
6484 | } | |
6485 | ||
6486 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 6487 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 6488 | |
6b53bb85 | 6489 | void |
d0d6b7c5 JB |
6490 | kill_buffer_processes (buffer) |
6491 | Lisp_Object buffer; | |
6492 | { | |
6493 | Lisp_Object tail, proc; | |
6494 | ||
8e50cc2d | 6495 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6496 | { |
70949dac | 6497 | proc = XCDR (XCAR (tail)); |
8e50cc2d | 6498 | if (PROCESSP (proc) |
d0d6b7c5 JB |
6499 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
6500 | { | |
d888760c | 6501 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) |
e1ab4959 | 6502 | Fdelete_process (proc); |
60f0fb11 | 6503 | else if (XPROCESS (proc)->infd >= 0) |
d0d6b7c5 JB |
6504 | process_send_signal (proc, SIGHUP, Qnil, 1); |
6505 | } | |
6506 | } | |
6507 | } | |
6508 | \f | |
3fed8ad5 GM |
6509 | /* On receipt of a signal that a child status has changed, loop asking |
6510 | about children with changed statuses until the system says there | |
6511 | are no more. | |
177c0ea7 | 6512 | |
3fed8ad5 GM |
6513 | All we do is change the status; we do not run sentinels or print |
6514 | notifications. That is saved for the next time keyboard input is | |
6515 | done, in order to avoid timing errors. | |
6516 | ||
6517 | ** WARNING: this can be called during garbage collection. | |
6518 | Therefore, it must not be fooled by the presence of mark bits in | |
6519 | Lisp objects. | |
6520 | ||
6521 | ** USG WARNING: Although it is not obvious from the documentation | |
6522 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6523 | signal() before executing at least one wait(), otherwise the | |
6524 | handler will be called again, resulting in an infinite loop. The | |
6525 | relevant portion of the documentation reads "SIGCLD signals will be | |
6526 | queued and the signal-catching function will be continually | |
6527 | reentered until the queue is empty". Invoking signal() causes the | |
6528 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6529 | Inc. |
6530 | ||
6531 | ** Malloc WARNING: This should never call malloc either directly or | |
6532 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6533 | |
a5cfdda8 | 6534 | #ifdef SIGCHLD |
d0d6b7c5 JB |
6535 | SIGTYPE |
6536 | sigchld_handler (signo) | |
6537 | int signo; | |
6538 | { | |
6539 | int old_errno = errno; | |
6540 | Lisp_Object proc; | |
6541 | register struct Lisp_Process *p; | |
6be429b1 | 6542 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 | 6543 | |
333f1b6f JD |
6544 | SIGNAL_THREAD_CHECK (signo); |
6545 | ||
d0d6b7c5 JB |
6546 | while (1) |
6547 | { | |
8e050977 | 6548 | pid_t pid; |
bba104c1 | 6549 | int w; |
d0d6b7c5 JB |
6550 | Lisp_Object tail; |
6551 | ||
6552 | #ifdef WNOHANG | |
6553 | #ifndef WUNTRACED | |
6554 | #define WUNTRACED 0 | |
6555 | #endif /* no WUNTRACED */ | |
6556 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 SS |
6557 | do |
6558 | { | |
29ed4d51 CY |
6559 | errno = 0; |
6560 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
29ed4d51 | 6561 | } |
e7d4a904 | 6562 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6563 | |
6564 | if (pid <= 0) | |
6565 | { | |
3fed8ad5 GM |
6566 | /* PID == 0 means no processes found, PID == -1 means a real |
6567 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6568 | |
6569 | /* USG systems forget handlers when they are used; | |
6570 | must reestablish each time */ | |
3c0ee47b | 6571 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 | 6572 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
d0d6b7c5 JB |
6573 | #endif |
6574 | errno = old_errno; | |
6575 | return; | |
6576 | } | |
6577 | #else | |
6578 | pid = wait (&w); | |
6579 | #endif /* no WNOHANG */ | |
6580 | ||
6581 | /* Find the process that signaled us, and record its status. */ | |
6582 | ||
a5cfdda8 | 6583 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6584 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6585 | { |
8e050977 | 6586 | Lisp_Object xpid = XCAR (tail); |
8e50cc2d SM |
6587 | if ((INTEGERP (xpid) && pid == (pid_t) XINT (xpid)) |
6588 | || (FLOATP (xpid) && pid == (pid_t) XFLOAT_DATA (xpid))) | |
8e050977 CY |
6589 | { |
6590 | XSETCAR (tail, Qnil); | |
6591 | goto sigchld_end_of_loop; | |
6592 | } | |
a5cfdda8 KS |
6593 | } |
6594 | ||
6595 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6596 | p = 0; |
8e50cc2d | 6597 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6598 | { |
70949dac | 6599 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6600 | p = XPROCESS (proc); |
d888760c | 6601 | if (EQ (p->type, Qreal) && p->pid == pid) |
d0d6b7c5 JB |
6602 | break; |
6603 | p = 0; | |
6604 | } | |
6605 | ||
6606 | /* Look for an asynchronous process whose pid hasn't been filled | |
6607 | in yet. */ | |
6608 | if (p == 0) | |
8e50cc2d | 6609 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6610 | { |
70949dac | 6611 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6612 | p = XPROCESS (proc); |
6bfd98e7 | 6613 | if (p->pid == -1) |
d0d6b7c5 JB |
6614 | break; |
6615 | p = 0; | |
6616 | } | |
177c0ea7 | 6617 | |
d0d6b7c5 JB |
6618 | /* Change the status of the process that was found. */ |
6619 | if (p != 0) | |
6620 | { | |
e98d950b | 6621 | int clear_desc_flag = 0; |
177c0ea7 | 6622 | |
60f0fb11 | 6623 | p->tick = ++process_tick; |
bba104c1 | 6624 | p->raw_status = w; |
6bfd98e7 | 6625 | p->raw_status_new = 1; |
177c0ea7 | 6626 | |
d0d6b7c5 | 6627 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6628 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6629 | && p->infd >= 0) |
e98d950b RS |
6630 | clear_desc_flag = 1; |
6631 | ||
6632 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6633 | if (clear_desc_flag) | |
6634 | { | |
60f0fb11 SM |
6635 | FD_CLR (p->infd, &input_wait_mask); |
6636 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6637 | } |
6be429b1 | 6638 | |
214d6069 | 6639 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6640 | look around. */ |
6641 | if (input_available_clear_time) | |
6642 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6643 | } |
6644 | ||
a5cfdda8 KS |
6645 | /* There was no asynchronous process found for that pid: we have |
6646 | a synchronous process. */ | |
d0d6b7c5 JB |
6647 | else |
6648 | { | |
6649 | synch_process_alive = 0; | |
6650 | ||
6651 | /* Report the status of the synchronous process. */ | |
6652 | if (WIFEXITED (w)) | |
6653 | synch_process_retcode = WRETCODE (w); | |
6654 | else if (WIFSIGNALED (w)) | |
6b61353c | 6655 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6656 | |
214d6069 | 6657 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6658 | look around. */ |
6659 | if (input_available_clear_time) | |
6660 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6661 | } |
6662 | ||
a5cfdda8 KS |
6663 | sigchld_end_of_loop: |
6664 | ; | |
6665 | ||
d0d6b7c5 JB |
6666 | /* On some systems, we must return right away. |
6667 | If any more processes want to signal us, we will | |
6668 | get another signal. | |
6669 | Otherwise (on systems that have WNOHANG), loop around | |
6670 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6671 | #if (defined WINDOWSNT \ |
8a2a6032 | 6672 | || (defined USG && !defined GNU_LINUX \ |
4e6277d8 | 6673 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6674 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6675 | signal (signo, sigchld_handler); |
6676 | #endif | |
6677 | errno = old_errno; | |
6678 | return; | |
6679 | #endif /* USG, but not HPUX with WNOHANG */ | |
6680 | } | |
6681 | } | |
a5cfdda8 | 6682 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6683 | \f |
6684 | ||
6685 | static Lisp_Object | |
6686 | exec_sentinel_unwind (data) | |
6687 | Lisp_Object data; | |
6688 | { | |
70949dac | 6689 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6690 | return Qnil; |
6691 | } | |
6692 | ||
3b9a3dfa RS |
6693 | static Lisp_Object |
6694 | exec_sentinel_error_handler (error) | |
6695 | Lisp_Object error; | |
6696 | { | |
6697 | cmd_error_internal (error, "error in process sentinel: "); | |
6698 | Vinhibit_quit = Qt; | |
6699 | update_echo_area (); | |
833ba342 | 6700 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6701 | return Qt; |
3b9a3dfa RS |
6702 | } |
6703 | ||
d0d6b7c5 JB |
6704 | static void |
6705 | exec_sentinel (proc, reason) | |
6706 | Lisp_Object proc, reason; | |
6707 | { | |
dfc21838 | 6708 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6709 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6710 | int count = SPECPDL_INDEX (); |
4da2f5be | 6711 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6712 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6713 | |
84af9896 RS |
6714 | if (inhibit_sentinels) |
6715 | return; | |
6716 | ||
dfc21838 RS |
6717 | /* No need to gcpro these, because all we do with them later |
6718 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6719 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6720 | XSETBUFFER (obuffer, current_buffer); |
6721 | okeymap = current_buffer->keymap; | |
6722 | ||
d0d6b7c5 JB |
6723 | sentinel = p->sentinel; |
6724 | if (NILP (sentinel)) | |
6725 | return; | |
6726 | ||
6727 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6728 | assure that it gets restored no matter how the sentinel exits. */ | |
6729 | p->sentinel = Qnil; | |
6730 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6731 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6732 | specbind (Qinhibit_quit, Qt); | |
6545aada | 6733 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 6734 | |
4da2f5be RS |
6735 | /* In case we get recursively called, |
6736 | and we already saved the match data nonrecursively, | |
6737 | save the same match data in safely recursive fashion. */ | |
6738 | if (outer_running_asynch_code) | |
6739 | { | |
6740 | Lisp_Object tem; | |
89f2614d KS |
6741 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6742 | restore_search_regs (); | |
6743 | record_unwind_save_match_data (); | |
6744 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6745 | } |
6746 | ||
6747 | /* For speed, if a search happens within this code, | |
6748 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6749 | running_asynch_code = 1; |
4da2f5be | 6750 | |
3b9a3dfa RS |
6751 | internal_condition_case_1 (read_process_output_call, |
6752 | Fcons (sentinel, | |
6753 | Fcons (proc, Fcons (reason, Qnil))), | |
6754 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6755 | exec_sentinel_error_handler); | |
4da2f5be RS |
6756 | |
6757 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6758 | restore_search_regs (); |
4da2f5be | 6759 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6760 | |
6761 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6762 | |
6763 | /* Restore waiting_for_user_input_p as it was | |
6764 | when we were called, in case the filter clobbered it. */ | |
6765 | waiting_for_user_input_p = waiting; | |
6766 | ||
7973cfa8 | 6767 | #if 0 |
dfc21838 RS |
6768 | if (! EQ (Fcurrent_buffer (), obuffer) |
6769 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6770 | #endif |
927e08be RS |
6771 | /* But do it only if the caller is actually going to read events. |
6772 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6773 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6774 | if (waiting_for_user_input_p == -1) |
6775 | record_asynch_buffer_change (); | |
8fb3cf64 | 6776 | |
2ea6d561 | 6777 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6778 | } |
6779 | ||
6780 | /* Report all recent events of a change in process status | |
6781 | (either run the sentinel or output a message). | |
b50fe468 RS |
6782 | This is usually done while Emacs is waiting for keyboard input |
6783 | but can be done at other times. */ | |
d0d6b7c5 | 6784 | |
ff6daed3 KS |
6785 | static void |
6786 | status_notify (deleting_process) | |
6787 | struct Lisp_Process *deleting_process; | |
d0d6b7c5 JB |
6788 | { |
6789 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6790 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6791 | struct gcpro gcpro1, gcpro2; |
6792 | ||
2e4149a8 KH |
6793 | tail = Qnil; |
6794 | msg = Qnil; | |
d0d6b7c5 JB |
6795 | /* We need to gcpro tail; if read_process_output calls a filter |
6796 | which deletes a process and removes the cons to which tail points | |
6797 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6798 | reference. */ | |
6799 | GCPRO2 (tail, msg); | |
6800 | ||
30623085 RS |
6801 | /* Set this now, so that if new processes are created by sentinels |
6802 | that we run, we get called again to handle their status changes. */ | |
6803 | update_tick = process_tick; | |
6804 | ||
99784d63 | 6805 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6806 | { |
30623085 RS |
6807 | Lisp_Object symbol; |
6808 | register struct Lisp_Process *p; | |
6809 | ||
99784d63 | 6810 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6811 | p = XPROCESS (proc); |
6812 | ||
60f0fb11 | 6813 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6814 | { |
60f0fb11 | 6815 | p->update_tick = p->tick; |
d0d6b7c5 | 6816 | |
30623085 | 6817 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6818 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6819 | && ! EQ (p->status, Qconnect) |
e690ca94 | 6820 | && ! EQ (p->status, Qlisten) |
d888760c GM |
6821 | /* Network or serial process not stopped: */ |
6822 | && ! EQ (p->command, Qt) | |
60f0fb11 | 6823 | && p->infd >= 0 |
ff6daed3 | 6824 | && p != deleting_process |
60f0fb11 | 6825 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6826 | |
30623085 | 6827 | buffer = p->buffer; |
d0d6b7c5 | 6828 | |
30623085 | 6829 | /* Get the text to use for the message. */ |
6bfd98e7 | 6830 | if (p->raw_status_new) |
30623085 | 6831 | update_status (p); |
116c423c | 6832 | msg = status_message (p); |
d0d6b7c5 | 6833 | |
30623085 RS |
6834 | /* If process is terminated, deactivate it or delete it. */ |
6835 | symbol = p->status; | |
6836 | if (CONSP (p->status)) | |
70949dac | 6837 | symbol = XCAR (p->status); |
d0d6b7c5 | 6838 | |
30623085 RS |
6839 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6840 | || EQ (symbol, Qclosed)) | |
6841 | { | |
6842 | if (delete_exited_processes) | |
6843 | remove_process (proc); | |
6844 | else | |
6845 | deactivate_process (proc); | |
6846 | } | |
d0d6b7c5 | 6847 | |
0ad61fe7 RS |
6848 | /* The actions above may have further incremented p->tick. |
6849 | So set p->update_tick again | |
6850 | so that an error in the sentinel will not cause | |
6851 | this code to be run again. */ | |
60f0fb11 | 6852 | p->update_tick = p->tick; |
30623085 RS |
6853 | /* Now output the message suitably. */ |
6854 | if (!NILP (p->sentinel)) | |
6855 | exec_sentinel (proc, msg); | |
6856 | /* Don't bother with a message in the buffer | |
6857 | when a process becomes runnable. */ | |
6858 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6859 | { | |
6860 | Lisp_Object ro, tem; | |
6861 | struct buffer *old = current_buffer; | |
d8a2934e RS |
6862 | int opoint, opoint_byte; |
6863 | int before, before_byte; | |
2e4149a8 | 6864 | |
30623085 | 6865 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 6866 | |
30623085 RS |
6867 | /* Avoid error if buffer is deleted |
6868 | (probably that's why the process is dead, too) */ | |
6869 | if (NILP (XBUFFER (buffer)->name)) | |
6870 | continue; | |
6871 | Fset_buffer (buffer); | |
12ca5cdf | 6872 | |
6ec8bbd2 | 6873 | opoint = PT; |
d8a2934e | 6874 | opoint_byte = PT_BYTE; |
30623085 RS |
6875 | /* Insert new output into buffer |
6876 | at the current end-of-output marker, | |
6877 | thus preserving logical ordering of input and output. */ | |
6878 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6879 | Fgoto_char (p->mark); |
30623085 | 6880 | else |
d8a2934e | 6881 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6882 | |
6883 | before = PT; | |
d8a2934e | 6884 | before_byte = PT_BYTE; |
30623085 RS |
6885 | |
6886 | tem = current_buffer->read_only; | |
6887 | current_buffer->read_only = Qnil; | |
6888 | insert_string ("\nProcess "); | |
6889 | Finsert (1, &p->name); | |
6890 | insert_string (" "); | |
6891 | Finsert (1, &msg); | |
6892 | current_buffer->read_only = tem; | |
d8a2934e | 6893 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6894 | |
12ca5cdf | 6895 | if (opoint >= before) |
d8a2934e RS |
6896 | SET_PT_BOTH (opoint + (PT - before), |
6897 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6898 | else |
d8a2934e | 6899 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6900 | |
30623085 | 6901 | set_buffer_internal (old); |
d0d6b7c5 | 6902 | } |
30623085 RS |
6903 | } |
6904 | } /* end for */ | |
d0d6b7c5 JB |
6905 | |
6906 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
3007ebfb | 6907 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 6908 | |
d0d6b7c5 JB |
6909 | UNGCPRO; |
6910 | } | |
0fa1789e KH |
6911 | |
6912 | \f | |
6913 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6914 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6915 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6916 | DECODING will be used to decode subprocess output and ENCODING to | |
6917 | encode subprocess input. */) | |
f3d9532b JB |
6918 | (process, decoding, encoding) |
6919 | register Lisp_Object process, decoding, encoding; | |
0fa1789e KH |
6920 | { |
6921 | register struct Lisp_Process *p; | |
6922 | ||
f3d9532b JB |
6923 | CHECK_PROCESS (process); |
6924 | p = XPROCESS (process); | |
60f0fb11 | 6925 | if (p->infd < 0) |
d5db4077 | 6926 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6927 | if (p->outfd < 0) |
d5db4077 | 6928 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6929 | Fcheck_coding_system (decoding); |
6930 | Fcheck_coding_system (encoding); | |
76d812bb | 6931 | encoding = coding_inherit_eol_type (encoding, Qnil); |
03f04413 KH |
6932 | p->decode_coding_system = decoding; |
6933 | p->encode_coding_system = encoding; | |
f3d9532b | 6934 | setup_process_coding_systems (process); |
0fa1789e KH |
6935 | |
6936 | return Qnil; | |
6937 | } | |
6938 | ||
6939 | DEFUN ("process-coding-system", | |
6940 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6941 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
f3d9532b JB |
6942 | (process) |
6943 | register Lisp_Object process; | |
0fa1789e | 6944 | { |
f3d9532b JB |
6945 | CHECK_PROCESS (process); |
6946 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6947 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6948 | } |
03f04413 KH |
6949 | |
6950 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6951 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6952 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6953 | If FLAG is non-nil, the filter is given multibyte strings. | |
6954 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6955 | all character code conversion except for end-of-line conversion is |
6956 | suppressed. */) | |
f3d9532b JB |
6957 | (process, flag) |
6958 | Lisp_Object process, flag; | |
03f04413 KH |
6959 | { |
6960 | register struct Lisp_Process *p; | |
6961 | ||
f3d9532b JB |
6962 | CHECK_PROCESS (process); |
6963 | p = XPROCESS (process); | |
5431bd6a SM |
6964 | if (NILP (flag)) |
6965 | p->decode_coding_system = raw_text_coding_system (p->decode_coding_system); | |
f3d9532b | 6966 | setup_process_coding_systems (process); |
03f04413 KH |
6967 | |
6968 | return Qnil; | |
6969 | } | |
6970 | ||
6971 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6972 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6973 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
f3d9532b JB |
6974 | (process) |
6975 | Lisp_Object process; | |
03f04413 KH |
6976 | { |
6977 | register struct Lisp_Process *p; | |
5431bd6a | 6978 | struct coding_system *coding; |
03f04413 | 6979 | |
f3d9532b JB |
6980 | CHECK_PROCESS (process); |
6981 | p = XPROCESS (process); | |
5431bd6a SM |
6982 | coding = proc_decode_coding_system[p->infd]; |
6983 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6984 | } |
6985 | ||
6986 | ||
d0d6b7c5 | 6987 | \f |
da8e1115 | 6988 | /* Add DESC to the set of keyboard input descriptors. */ |
a69281ff RS |
6989 | |
6990 | void | |
6991 | add_keyboard_wait_descriptor (desc) | |
6992 | int desc; | |
6993 | { | |
a69281ff | 6994 | FD_SET (desc, &input_wait_mask); |
b5dc1c83 | 6995 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
6996 | if (desc > max_keyboard_desc) |
6997 | max_keyboard_desc = desc; | |
6998 | } | |
6999 | ||
994d9841 NR |
7000 | static int add_gpm_wait_descriptor_called_flag; |
7001 | ||
7002 | void | |
7003 | add_gpm_wait_descriptor (desc) | |
7004 | int desc; | |
7005 | { | |
7006 | if (! add_gpm_wait_descriptor_called_flag) | |
7007 | FD_CLR (0, &input_wait_mask); | |
7008 | add_gpm_wait_descriptor_called_flag = 1; | |
7009 | FD_SET (desc, &input_wait_mask); | |
7010 | FD_SET (desc, &gpm_wait_mask); | |
7011 | if (desc > max_gpm_desc) | |
7012 | max_gpm_desc = desc; | |
7013 | } | |
7014 | ||
a69281ff RS |
7015 | /* From now on, do not expect DESC to give keyboard input. */ |
7016 | ||
7017 | void | |
7018 | delete_keyboard_wait_descriptor (desc) | |
7019 | int desc; | |
7020 | { | |
7021 | int fd; | |
7022 | int lim = max_keyboard_desc; | |
7023 | ||
7024 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 7025 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
7026 | |
7027 | if (desc == max_keyboard_desc) | |
7028 | for (fd = 0; fd < lim; fd++) | |
7029 | if (FD_ISSET (fd, &input_wait_mask) | |
994d9841 NR |
7030 | && !FD_ISSET (fd, &non_keyboard_wait_mask) |
7031 | && !FD_ISSET (fd, &gpm_wait_mask)) | |
a69281ff RS |
7032 | max_keyboard_desc = fd; |
7033 | } | |
7034 | ||
994d9841 NR |
7035 | void |
7036 | delete_gpm_wait_descriptor (desc) | |
7037 | int desc; | |
7038 | { | |
7039 | int fd; | |
7040 | int lim = max_gpm_desc; | |
7041 | ||
7042 | FD_CLR (desc, &input_wait_mask); | |
7043 | FD_CLR (desc, &non_process_wait_mask); | |
7044 | ||
7045 | if (desc == max_gpm_desc) | |
7046 | for (fd = 0; fd < lim; fd++) | |
7047 | if (FD_ISSET (fd, &input_wait_mask) | |
7048 | && !FD_ISSET (fd, &non_keyboard_wait_mask) | |
7049 | && !FD_ISSET (fd, &non_process_wait_mask)) | |
7050 | max_gpm_desc = fd; | |
7051 | } | |
7052 | ||
a69281ff RS |
7053 | /* Return nonzero if *MASK has a bit set |
7054 | that corresponds to one of the keyboard input descriptors. */ | |
7055 | ||
ff6daed3 | 7056 | static int |
a69281ff RS |
7057 | keyboard_bit_set (mask) |
7058 | SELECT_TYPE *mask; | |
7059 | { | |
7060 | int fd; | |
7061 | ||
ee8e09af | 7062 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
7063 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
7064 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
7065 | return 1; | |
7066 | ||
7067 | return 0; | |
7068 | } | |
7069 | \f | |
934e2a68 EZ |
7070 | /* Enumeration of and access to system processes a-la ps(1). */ |
7071 | ||
7072 | #if HAVE_PROCFS | |
7073 | ||
7074 | /* Process enumeration and access via /proc. */ | |
7075 | ||
7076 | static Lisp_Object | |
7077 | procfs_list_system_processes () | |
7078 | { | |
7079 | Lisp_Object procdir, match, proclist, next; | |
7080 | struct gcpro gcpro1, gcpro2; | |
7081 | register Lisp_Object tail; | |
7082 | ||
7083 | GCPRO2 (procdir, match); | |
7084 | /* For every process on the system, there's a directory in the | |
7085 | "/proc" pseudo-directory whose name is the numeric ID of that | |
7086 | process. */ | |
7087 | procdir = build_string ("/proc"); | |
7088 | match = build_string ("[0-9]+"); | |
7089 | proclist = directory_files_internal (procdir, Qnil, match, Qt, 0, Qnil); | |
7090 | ||
7091 | /* `proclist' gives process IDs as strings. Destructively convert | |
7092 | each string into a number. */ | |
7093 | for (tail = proclist; CONSP (tail); tail = next) | |
7094 | { | |
7095 | next = XCDR (tail); | |
7096 | XSETCAR (tail, Fstring_to_number (XCAR (tail), Qnil)); | |
7097 | } | |
7098 | UNGCPRO; | |
7099 | ||
7100 | /* directory_files_internal returns the files in reverse order; undo | |
7101 | that. */ | |
7102 | proclist = Fnreverse (proclist); | |
7103 | return proclist; | |
7104 | } | |
7105 | ||
7106 | static void | |
7107 | time_from_jiffies (unsigned long long tval, long hz, | |
7108 | time_t *sec, unsigned *usec) | |
7109 | { | |
7110 | unsigned long long ullsec; | |
7111 | ||
7112 | *sec = tval / hz; | |
7113 | ullsec = *sec; | |
7114 | tval -= ullsec * hz; | |
7115 | /* Careful: if HZ > 1 million, then integer division by it yields zero. */ | |
7116 | if (hz <= 1000000) | |
7117 | *usec = tval * 1000000 / hz; | |
7118 | else | |
7119 | *usec = tval / (hz / 1000000); | |
7120 | } | |
7121 | ||
7122 | static Lisp_Object | |
7123 | ltime_from_jiffies (unsigned long long tval, long hz) | |
7124 | { | |
7125 | time_t sec; | |
7126 | unsigned usec; | |
7127 | ||
7128 | time_from_jiffies (tval, hz, &sec, &usec); | |
7129 | ||
7130 | return list3 (make_number ((sec >> 16) & 0xffff), | |
7131 | make_number (sec & 0xffff), | |
7132 | make_number (usec)); | |
7133 | } | |
7134 | ||
7135 | static void | |
7136 | get_up_time (time_t *sec, unsigned *usec) | |
7137 | { | |
7138 | FILE *fup; | |
7139 | ||
7140 | *sec = *usec = 0; | |
7141 | ||
7142 | BLOCK_INPUT; | |
7143 | fup = fopen ("/proc/uptime", "r"); | |
7144 | ||
7145 | if (fup) | |
7146 | { | |
7147 | double uptime, idletime; | |
7148 | ||
7149 | /* The numbers in /proc/uptime use C-locale decimal point, but | |
7150 | we already set ourselves to the C locale (see `fixup_locale' | |
7151 | in emacs.c). */ | |
7152 | if (2 <= fscanf (fup, "%lf %lf", &uptime, &idletime)) | |
7153 | { | |
7154 | *sec = uptime; | |
7155 | *usec = (uptime - *sec) * 1000000; | |
7156 | } | |
7157 | fclose (fup); | |
7158 | } | |
7159 | UNBLOCK_INPUT; | |
7160 | } | |
7161 | ||
7162 | #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff) | |
7163 | #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12)) | |
7164 | ||
7165 | static Lisp_Object | |
7166 | procfs_ttyname (rdev) | |
7167 | { | |
7168 | FILE *fdev = NULL; | |
7169 | char name[PATH_MAX]; | |
7170 | ||
7171 | BLOCK_INPUT; | |
7172 | fdev = fopen ("/proc/tty/drivers", "r"); | |
7173 | ||
7174 | if (fdev) | |
7175 | { | |
7176 | unsigned major; | |
7177 | unsigned long minor_beg, minor_end; | |
7178 | char minor[25]; /* 2 32-bit numbers + dash */ | |
7179 | char *endp; | |
7180 | ||
7181 | while (!feof (fdev) && !ferror (fdev)) | |
7182 | { | |
7183 | if (3 <= fscanf (fdev, "%*s %s %u %s %*s\n", name, &major, minor) | |
7184 | && major == MAJOR (rdev)) | |
7185 | { | |
7186 | minor_beg = strtoul (minor, &endp, 0); | |
7187 | if (*endp == '\0') | |
7188 | minor_end = minor_beg; | |
7189 | else if (*endp == '-') | |
7190 | minor_end = strtoul (endp + 1, &endp, 0); | |
7191 | else | |
7192 | continue; | |
7193 | ||
7194 | if (MINOR (rdev) >= minor_beg && MINOR (rdev) <= minor_end) | |
7195 | { | |
7196 | sprintf (name + strlen (name), "%lu", MINOR (rdev)); | |
7197 | break; | |
7198 | } | |
7199 | } | |
7200 | } | |
7201 | fclose (fdev); | |
7202 | } | |
7203 | UNBLOCK_INPUT; | |
7204 | return build_string (name); | |
7205 | } | |
7206 | ||
7207 | static unsigned long | |
7208 | procfs_get_total_memory (void) | |
7209 | { | |
7210 | FILE *fmem = NULL; | |
7211 | unsigned long retval = 2 * 1024 * 1024; /* default: 2GB */ | |
7212 | ||
7213 | BLOCK_INPUT; | |
7214 | fmem = fopen ("/proc/meminfo", "r"); | |
7215 | ||
7216 | if (fmem) | |
7217 | { | |
7218 | unsigned long entry_value; | |
7219 | char entry_name[20]; /* the longest I saw is 13+1 */ | |
7220 | ||
7221 | while (!feof (fmem) && !ferror (fmem)) | |
7222 | { | |
7223 | if (2 <= fscanf (fmem, "%s %lu kB\n", entry_name, &entry_value) | |
7224 | && strcmp (entry_name, "MemTotal:") == 0) | |
7225 | { | |
7226 | retval = entry_value; | |
7227 | break; | |
7228 | } | |
7229 | } | |
7230 | fclose (fmem); | |
7231 | } | |
7232 | UNBLOCK_INPUT; | |
7233 | return retval; | |
7234 | } | |
7235 | ||
7236 | static Lisp_Object | |
7237 | procfs_system_process_attributes (pid) | |
7238 | Lisp_Object pid; | |
7239 | { | |
7240 | char procfn[PATH_MAX], fn[PATH_MAX]; | |
7241 | struct stat st; | |
7242 | struct passwd *pw; | |
7243 | struct group *gr; | |
7244 | long clocks_per_sec; | |
7245 | char *procfn_end; | |
7246 | char procbuf[1025], *p, *q; | |
7247 | int fd; | |
7248 | ssize_t nread; | |
7249 | char cmd[PATH_MAX]; | |
7250 | char *cmdline = NULL; | |
7251 | size_t cmdsize; | |
7252 | int c; | |
7253 | int proc_id, ppid, uid, gid, pgrp, sess, tty, tpgid, thcount; | |
7254 | unsigned long long utime, stime, cutime, cstime, start; | |
7255 | long priority, nice, rss; | |
7256 | unsigned long minflt, majflt, cminflt, cmajflt, vsize; | |
7257 | time_t sec; | |
7258 | unsigned usec; | |
7259 | EMACS_TIME tnow, tstart, tboot, telapsed,ttotal; | |
7260 | double pcpu, pmem; | |
7261 | Lisp_Object attrs = Qnil; | |
7262 | Lisp_Object cmd_str, decoded_cmd, tem; | |
7263 | struct gcpro gcpro1, gcpro2; | |
27bef0c8 | 7264 | EMACS_INT uid_eint, gid_eint; |
934e2a68 EZ |
7265 | |
7266 | CHECK_NUMBER_OR_FLOAT (pid); | |
7267 | proc_id = FLOATP (pid) ? XFLOAT_DATA (pid) : XINT (pid); | |
7268 | sprintf (procfn, "/proc/%lu", proc_id); | |
7269 | if (stat (procfn, &st) < 0) | |
7270 | return attrs; | |
7271 | ||
7272 | GCPRO2 (attrs, decoded_cmd); | |
7273 | ||
7274 | /* euid egid */ | |
7275 | uid = st.st_uid; | |
27bef0c8 GM |
7276 | /* Use of EMACS_INT stops GCC whining about limited range of data type. */ |
7277 | uid_eint = uid; | |
7278 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid_eint)), attrs); | |
934e2a68 EZ |
7279 | BLOCK_INPUT; |
7280 | pw = (struct passwd *) getpwuid (uid); | |
7281 | UNBLOCK_INPUT; | |
7282 | if (pw) | |
7283 | attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs); | |
27bef0c8 | 7284 | |
934e2a68 | 7285 | gid = st.st_gid; |
27bef0c8 GM |
7286 | gid_eint = gid; |
7287 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid_eint)), attrs); | |
934e2a68 EZ |
7288 | BLOCK_INPUT; |
7289 | gr = (struct group *) getgrgid (gid); | |
7290 | UNBLOCK_INPUT; | |
7291 | if (gr) | |
7292 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); | |
7293 | ||
7294 | strcpy (fn, procfn); | |
7295 | procfn_end = fn + strlen (fn); | |
7296 | strcpy (procfn_end, "/stat"); | |
7297 | fd = emacs_open (fn, O_RDONLY, 0); | |
7298 | if (fd >= 0 && (nread = emacs_read (fd, procbuf, sizeof(procbuf) - 1)) > 0) | |
7299 | { | |
7300 | procbuf[nread] = '\0'; | |
7301 | p = procbuf; | |
7302 | ||
7303 | p = strchr (p, '(') + 1; | |
7304 | q = strchr (p, ')'); | |
7305 | /* comm */ | |
7306 | if (q > p) | |
7307 | { | |
7308 | memcpy (cmd, p, q - p); | |
7309 | cmd[q - p] = '\0'; | |
7310 | } | |
7311 | else | |
7312 | strcpy (cmd, "???"); | |
7313 | /* Command name is encoded in locale-coding-system; decode it. */ | |
7314 | cmd_str = make_unibyte_string (cmd, q ? q - p : 3); | |
7315 | decoded_cmd = code_convert_string_norecord (cmd_str, | |
7316 | Vlocale_coding_system, 0); | |
7317 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
7318 | ||
7319 | if (q) | |
7320 | { | |
27bef0c8 | 7321 | EMACS_INT ppid_eint, pgrp_eint, sess_eint, tpgid_eint, thcount_eint; |
934e2a68 EZ |
7322 | p = q + 2; |
7323 | /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */ | |
7324 | sscanf (p, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld", | |
7325 | &c, &ppid, &pgrp, &sess, &tty, &tpgid, | |
7326 | &minflt, &cminflt, &majflt, &cmajflt, | |
7327 | &utime, &stime, &cutime, &cstime, | |
7328 | &priority, &nice, &thcount, &start, &vsize, &rss); | |
7329 | { | |
7330 | char state_str[2]; | |
7331 | ||
7332 | state_str[0] = c; | |
7333 | state_str[1] = '\0'; | |
7334 | tem = build_string (state_str); | |
7335 | attrs = Fcons (Fcons (Qstate, tem), attrs); | |
7336 | } | |
27bef0c8 GM |
7337 | /* Stops GCC whining about limited range of data type. */ |
7338 | ppid_eint = ppid; | |
7339 | pgrp_eint = pgrp; | |
7340 | sess_eint = sess; | |
7341 | tpgid_eint = tpgid; | |
7342 | thcount_eint = thcount; | |
7343 | attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (ppid_eint)), attrs); | |
7344 | attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pgrp_eint)), attrs); | |
7345 | attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (sess_eint)), attrs); | |
934e2a68 | 7346 | attrs = Fcons (Fcons (Qttname, procfs_ttyname (tty)), attrs); |
27bef0c8 | 7347 | attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (tpgid_eint)), attrs); |
934e2a68 EZ |
7348 | attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (minflt)), attrs); |
7349 | attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (majflt)), attrs); | |
7350 | attrs = Fcons (Fcons (Qcminflt, make_fixnum_or_float (cminflt)), attrs); | |
7351 | attrs = Fcons (Fcons (Qcmajflt, make_fixnum_or_float (cmajflt)), attrs); | |
7352 | clocks_per_sec = sysconf (_SC_CLK_TCK); | |
7353 | if (clocks_per_sec < 0) | |
7354 | clocks_per_sec = 100; | |
7355 | attrs = Fcons (Fcons (Qutime, | |
7356 | ltime_from_jiffies (utime, clocks_per_sec)), | |
7357 | attrs); | |
7358 | attrs = Fcons (Fcons (Qstime, | |
7359 | ltime_from_jiffies (stime, clocks_per_sec)), | |
7360 | attrs); | |
7361 | attrs = Fcons (Fcons (Qcutime, | |
7362 | ltime_from_jiffies (cutime, clocks_per_sec)), | |
7363 | attrs); | |
7364 | attrs = Fcons (Fcons (Qcstime, | |
7365 | ltime_from_jiffies (cstime, clocks_per_sec)), | |
7366 | attrs); | |
7367 | attrs = Fcons (Fcons (Qpri, make_number (priority)), attrs); | |
7368 | attrs = Fcons (Fcons (Qnice, make_number (nice)), attrs); | |
27bef0c8 | 7369 | attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (thcount_eint)), attrs); |
934e2a68 EZ |
7370 | EMACS_GET_TIME (tnow); |
7371 | get_up_time (&sec, &usec); | |
7372 | EMACS_SET_SECS (telapsed, sec); | |
7373 | EMACS_SET_USECS (telapsed, usec); | |
7374 | EMACS_SUB_TIME (tboot, tnow, telapsed); | |
7375 | time_from_jiffies (start, clocks_per_sec, &sec, &usec); | |
7376 | EMACS_SET_SECS (tstart, sec); | |
7377 | EMACS_SET_USECS (tstart, usec); | |
7378 | EMACS_ADD_TIME (tstart, tboot, tstart); | |
7379 | attrs = Fcons (Fcons (Qstart, | |
7380 | list3 (make_number | |
7381 | ((EMACS_SECS (tstart) >> 16) & 0xffff), | |
7382 | make_number | |
7383 | (EMACS_SECS (tstart) & 0xffff), | |
7384 | make_number | |
7385 | (EMACS_USECS (tstart)))), | |
7386 | attrs); | |
7387 | attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (vsize/1024)), attrs); | |
7388 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (4*rss)), attrs); | |
7389 | EMACS_SUB_TIME (telapsed, tnow, tstart); | |
7390 | attrs = Fcons (Fcons (Qetime, | |
7391 | list3 (make_number | |
7392 | ((EMACS_SECS (telapsed) >> 16) & 0xffff), | |
7393 | make_number | |
7394 | (EMACS_SECS (telapsed) & 0xffff), | |
7395 | make_number | |
7396 | (EMACS_USECS (telapsed)))), | |
7397 | attrs); | |
7398 | time_from_jiffies (utime + stime, clocks_per_sec, &sec, &usec); | |
7399 | pcpu = (sec + usec / 1000000.0) / (EMACS_SECS (telapsed) + EMACS_USECS (telapsed) / 1000000.0); | |
7400 | attrs = Fcons (Fcons (Qpcpu, make_float (pcpu)), attrs); | |
7401 | pmem = 4.0 * 100 * rss / procfs_get_total_memory (); | |
7402 | if (pmem > 100) | |
7403 | pmem = 100; | |
7404 | attrs = Fcons (Fcons (Qpmem, make_float (pmem)), attrs); | |
7405 | } | |
7406 | } | |
7407 | if (fd >= 0) | |
7408 | emacs_close (fd); | |
7409 | ||
7410 | /* args */ | |
7411 | strcpy (procfn_end, "/cmdline"); | |
7412 | fd = emacs_open (fn, O_RDONLY, 0); | |
7413 | if (fd >= 0) | |
7414 | { | |
7415 | for (cmdsize = 0; emacs_read (fd, (char *)&c, 1) == 1; cmdsize++) | |
7416 | { | |
7417 | if (isspace (c) || c == '\\') | |
7418 | cmdsize++; /* for later quoting, see below */ | |
7419 | } | |
7420 | if (cmdsize) | |
7421 | { | |
7422 | cmdline = xmalloc (cmdsize + 1); | |
7423 | lseek (fd, 0L, SEEK_SET); | |
7424 | cmdline[0] = '\0'; | |
7425 | if ((nread = read (fd, cmdline, cmdsize)) >= 0) | |
7426 | cmdline[nread++] = '\0'; | |
7427 | /* We don't want trailing null characters. */ | |
7428 | for (p = cmdline + nread - 1; p > cmdline && !*p; p--) | |
7429 | nread--; | |
7430 | for (p = cmdline; p < cmdline + nread; p++) | |
7431 | { | |
7432 | /* Escape-quote whitespace and backslashes. */ | |
7433 | if (isspace (*p) || *p == '\\') | |
7434 | { | |
7435 | memmove (p + 1, p, nread - (p - cmdline)); | |
7436 | nread++; | |
7437 | *p++ = '\\'; | |
7438 | } | |
7439 | else if (*p == '\0') | |
7440 | *p = ' '; | |
7441 | } | |
7442 | cmdsize = nread; | |
7443 | } | |
7444 | else | |
7445 | { | |
7446 | cmdsize = strlen (cmd) + 2; | |
7447 | cmdline = xmalloc (cmdsize + 1); | |
7448 | strcpy (cmdline, "["); | |
7449 | strcat (strcat (cmdline, cmd), "]"); | |
7450 | } | |
7451 | emacs_close (fd); | |
7452 | /* Command line is encoded in locale-coding-system; decode it. */ | |
7453 | cmd_str = make_unibyte_string (cmdline, cmdsize); | |
7454 | decoded_cmd = code_convert_string_norecord (cmd_str, | |
7455 | Vlocale_coding_system, 0); | |
7456 | xfree (cmdline); | |
7457 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); | |
7458 | } | |
7459 | ||
7460 | UNGCPRO; | |
7461 | return attrs; | |
7462 | } | |
7463 | ||
7464 | #endif /* !HAVE_PROCFS */ | |
7465 | ||
7466 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, | |
7467 | 0, 0, 0, | |
7468 | doc: /* Return a list of numerical process IDs of all running processes. | |
7469 | If this functionality is unsupported, return nil. | |
7470 | ||
7471 | See `system-process-attributes' for getting attributes of a process | |
7472 | given its ID. */) | |
7473 | () | |
7474 | { | |
7475 | #ifdef LISTPROC | |
7476 | return LISTPROC (); | |
7477 | #else | |
7478 | return Qnil; | |
7479 | #endif | |
7480 | } | |
7481 | ||
7482 | DEFUN ("system-process-attributes", Fsystem_process_attributes, | |
7483 | Ssystem_process_attributeses, 1, 1, 0, | |
7484 | doc: /* Return attributes of the process given by its PID, a number. | |
7485 | ||
7486 | Value is an alist where each element is a cons cell of the form | |
7487 | ||
7488 | \(ATTR . VALUE) | |
7489 | ||
7490 | If this functionality is unsupported, the value is nil. | |
7491 | ||
7492 | See `list-system-processes' for getting a list of all process IDs. | |
7493 | ||
7494 | The attributes that this function may return are listed below, | |
7495 | together with the type of the associated value (in parentheses). | |
8f8b082a EZ |
7496 | Not all platforms support all of these attributes; unsupported |
7497 | attributes will not appear in the returned alist. | |
934e2a68 EZ |
7498 | Unless explicitly indicated otherwise, numbers can have either |
7499 | integer or floating point values. | |
7500 | ||
7501 | euid -- Effective user User ID of the process (number) | |
7502 | user -- User name corresponding to euid (string) | |
7503 | egid -- Effective user Group ID of the process (number) | |
7504 | group -- Group name corresponding to egid (string) | |
7505 | comm -- Command name (executable name only) (string) | |
7506 | state -- Process state code, such as "S", "R", or "T" (string) | |
7507 | ppid -- Parent process ID (number) | |
7508 | pgrp -- Process group ID (number) | |
7509 | sess -- Session ID, i.e. process ID of session leader (number) | |
7510 | ttname -- Controlling tty name (string) | |
7511 | tpgid -- ID of foreground process group on the process's tty (number) | |
7512 | minflt -- number of minor page faults (number) | |
7513 | majflt -- number of major page faults (number) | |
7514 | cminflt -- cumulative number of minor page faults (number) | |
7515 | cmajflt -- cumulative number of major page faults (number) | |
7516 | utime -- user time used by the process, in the (HIGH LOW USEC) format | |
7517 | stime -- system time used by the process, in the (HIGH LOW USEC) format | |
7518 | cutime -- user time used by the process and its children, (HIGH LOW USEC) | |
7519 | cstime -- system time used by the process and its children, (HIGH LOW USEC) | |
7520 | pri -- priority of the process (number) | |
7521 | nice -- nice value of the process (number) | |
7522 | thcount -- process thread count (number) | |
7523 | start -- time the process started, in the (HIGH LOW USEC) format | |
7524 | vsize -- virtual memory size of the process in KB's (number) | |
7525 | rss -- resident set size of the process in KB's (number) | |
7526 | etime -- elapsed time the process is running, in (HIGH LOW USEC) format | |
7527 | pcpu -- percents of CPU time used by the process (floating-point number) | |
7528 | pmem -- percents of total physical memory used by process's resident set | |
7529 | (floating-point number) | |
7530 | args -- command line which invoked the process (string). */) | |
7531 | (pid) | |
7532 | ||
7533 | Lisp_Object pid; | |
7534 | { | |
7535 | #ifdef PROCATTR | |
7536 | return PROCATTR (pid); | |
7537 | #else | |
7538 | return Qnil; | |
7539 | #endif | |
7540 | } | |
7541 | \f | |
dfcf069d | 7542 | void |
d0d6b7c5 JB |
7543 | init_process () |
7544 | { | |
7545 | register int i; | |
7546 | ||
84af9896 RS |
7547 | inhibit_sentinels = 0; |
7548 | ||
d0d6b7c5 JB |
7549 | #ifdef SIGCHLD |
7550 | #ifndef CANNOT_DUMP | |
7551 | if (! noninteractive || initialized) | |
7552 | #endif | |
7553 | signal (SIGCHLD, sigchld_handler); | |
7554 | #endif | |
7555 | ||
7556 | FD_ZERO (&input_wait_mask); | |
a69281ff | 7557 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 7558 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 7559 | max_process_desc = 0; |
dd2281ae | 7560 | |
bad49fc7 KS |
7561 | #ifdef NON_BLOCKING_CONNECT |
7562 | FD_ZERO (&connect_wait_mask); | |
7563 | num_pending_connects = 0; | |
7564 | #endif | |
7565 | ||
6b61353c KH |
7566 | #ifdef ADAPTIVE_READ_BUFFERING |
7567 | process_output_delay_count = 0; | |
7568 | process_output_skip = 0; | |
7569 | #endif | |
7570 | ||
c0707982 KL |
7571 | /* Don't do this, it caused infinite select loops. The display |
7572 | method should call add_keyboard_wait_descriptor on stdin if it | |
7573 | needs that. */ | |
7574 | #if 0 | |
a69281ff | 7575 | FD_SET (0, &input_wait_mask); |
c0707982 | 7576 | #endif |
dd2281ae | 7577 | |
d0d6b7c5 | 7578 | Vprocess_alist = Qnil; |
a5cfdda8 KS |
7579 | #ifdef SIGCHLD |
7580 | deleted_pid_list = Qnil; | |
7581 | #endif | |
d0d6b7c5 JB |
7582 | for (i = 0; i < MAXDESC; i++) |
7583 | { | |
7584 | chan_process[i] = Qnil; | |
7585 | proc_buffered_char[i] = -1; | |
7586 | } | |
c7580538 KH |
7587 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
7588 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
7589 | #ifdef DATAGRAM_SOCKETS |
7590 | bzero (datagram_address, sizeof datagram_address); | |
7591 | #endif | |
9057ff80 | 7592 | |
c2bd2c26 KS |
7593 | #ifdef HAVE_SOCKETS |
7594 | { | |
7595 | Lisp_Object subfeatures = Qnil; | |
6b61353c KH |
7596 | struct socket_options *sopt; |
7597 | ||
9057ff80 KS |
7598 | #define ADD_SUBFEATURE(key, val) \ |
7599 | subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures) | |
7600 | ||
9057ff80 | 7601 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 7602 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
7603 | #endif |
7604 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 7605 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 KS |
7606 | #endif |
7607 | #ifdef HAVE_LOCAL_SOCKETS | |
c2bd2c26 | 7608 | ADD_SUBFEATURE (QCfamily, Qlocal); |
e1652a86 KS |
7609 | #endif |
7610 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7611 | #ifdef AF_INET6 | |
7612 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
9057ff80 KS |
7613 | #endif |
7614 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 7615 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 7616 | #endif |
132d0475 | 7617 | #if defined(O_NONBLOCK) || defined(O_NDELAY) |
c2bd2c26 | 7618 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 7619 | #endif |
6b61353c KH |
7620 | |
7621 | for (sopt = socket_options; sopt->name; sopt++) | |
7622 | subfeatures = Fcons (intern (sopt->name), subfeatures); | |
7623 | ||
c2bd2c26 KS |
7624 | Fprovide (intern ("make-network-process"), subfeatures); |
7625 | } | |
7626 | #endif /* HAVE_SOCKETS */ | |
d9e7c622 | 7627 | |
14145fa3 | 7628 | #if defined (DARWIN_OS) |
db853b7a | 7629 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive |
d9e7c622 ST |
7630 | processes. As such, we only change the default value. */ |
7631 | if (initialized) | |
7632 | { | |
7633 | char *release = get_operating_system_release(); | |
7634 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION | |
7635 | && release[1] == '.')) { | |
7636 | Vprocess_connection_type = Qnil; | |
7637 | } | |
7638 | } | |
7639 | #endif | |
d0d6b7c5 | 7640 | } |
312c9964 | 7641 | |
dfcf069d | 7642 | void |
d0d6b7c5 JB |
7643 | syms_of_process () |
7644 | { | |
d0d6b7c5 JB |
7645 | Qprocessp = intern ("processp"); |
7646 | staticpro (&Qprocessp); | |
7647 | Qrun = intern ("run"); | |
7648 | staticpro (&Qrun); | |
7649 | Qstop = intern ("stop"); | |
7650 | staticpro (&Qstop); | |
324e68ba KS |
7651 | Qsignal = intern ("signal"); |
7652 | staticpro (&Qsignal); | |
d0d6b7c5 JB |
7653 | |
7654 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7655 | here again. | |
7656 | ||
7657 | Qexit = intern ("exit"); | |
7658 | staticpro (&Qexit); */ | |
7659 | ||
7660 | Qopen = intern ("open"); | |
7661 | staticpro (&Qopen); | |
7662 | Qclosed = intern ("closed"); | |
7663 | staticpro (&Qclosed); | |
dd2a17ab KS |
7664 | Qconnect = intern ("connect"); |
7665 | staticpro (&Qconnect); | |
7666 | Qfailed = intern ("failed"); | |
7667 | staticpro (&Qfailed); | |
e690ca94 KS |
7668 | Qlisten = intern ("listen"); |
7669 | staticpro (&Qlisten); | |
7670 | Qlocal = intern ("local"); | |
7671 | staticpro (&Qlocal); | |
e1652a86 KS |
7672 | Qipv4 = intern ("ipv4"); |
7673 | staticpro (&Qipv4); | |
7674 | #ifdef AF_INET6 | |
7675 | Qipv6 = intern ("ipv6"); | |
7676 | staticpro (&Qipv6); | |
7677 | #endif | |
9057ff80 KS |
7678 | Qdatagram = intern ("datagram"); |
7679 | staticpro (&Qdatagram); | |
e690ca94 | 7680 | |
d888760c GM |
7681 | QCport = intern (":port"); |
7682 | staticpro (&QCport); | |
7683 | QCspeed = intern (":speed"); | |
7684 | staticpro (&QCspeed); | |
7685 | QCprocess = intern (":process"); | |
7686 | staticpro (&QCprocess); | |
7687 | ||
7688 | QCbytesize = intern (":bytesize"); | |
7689 | staticpro (&QCbytesize); | |
7690 | QCstopbits = intern (":stopbits"); | |
7691 | staticpro (&QCstopbits); | |
7692 | QCparity = intern (":parity"); | |
7693 | staticpro (&QCparity); | |
7694 | Qodd = intern ("odd"); | |
7695 | staticpro (&Qodd); | |
7696 | Qeven = intern ("even"); | |
7697 | staticpro (&Qeven); | |
7698 | QCflowcontrol = intern (":flowcontrol"); | |
7699 | staticpro (&QCflowcontrol); | |
7700 | Qhw = intern ("hw"); | |
7701 | staticpro (&Qhw); | |
7702 | Qsw = intern ("sw"); | |
7703 | staticpro (&Qsw); | |
7704 | QCsummary = intern (":summary"); | |
7705 | staticpro (&QCsummary); | |
7706 | ||
7707 | Qreal = intern ("real"); | |
7708 | staticpro (&Qreal); | |
7709 | Qnetwork = intern ("network"); | |
7710 | staticpro (&Qnetwork); | |
7711 | Qserial = intern ("serial"); | |
7712 | staticpro (&Qserial); | |
7713 | ||
e690ca94 KS |
7714 | QCname = intern (":name"); |
7715 | staticpro (&QCname); | |
7716 | QCbuffer = intern (":buffer"); | |
7717 | staticpro (&QCbuffer); | |
7718 | QChost = intern (":host"); | |
7719 | staticpro (&QChost); | |
7720 | QCservice = intern (":service"); | |
7721 | staticpro (&QCservice); | |
9057ff80 KS |
7722 | QCtype = intern (":type"); |
7723 | staticpro (&QCtype); | |
e690ca94 KS |
7724 | QClocal = intern (":local"); |
7725 | staticpro (&QClocal); | |
7726 | QCremote = intern (":remote"); | |
7727 | staticpro (&QCremote); | |
7728 | QCcoding = intern (":coding"); | |
7729 | staticpro (&QCcoding); | |
7730 | QCserver = intern (":server"); | |
7731 | staticpro (&QCserver); | |
e690ca94 KS |
7732 | QCnowait = intern (":nowait"); |
7733 | staticpro (&QCnowait); | |
e690ca94 KS |
7734 | QCsentinel = intern (":sentinel"); |
7735 | staticpro (&QCsentinel); | |
7736 | QClog = intern (":log"); | |
7737 | staticpro (&QClog); | |
7738 | QCnoquery = intern (":noquery"); | |
7739 | staticpro (&QCnoquery); | |
7740 | QCstop = intern (":stop"); | |
7741 | staticpro (&QCstop); | |
7742 | QCoptions = intern (":options"); | |
7743 | staticpro (&QCoptions); | |
faa7db08 KS |
7744 | QCplist = intern (":plist"); |
7745 | staticpro (&QCplist); | |
177c0ea7 | 7746 | |
6545aada RS |
7747 | Qlast_nonmenu_event = intern ("last-nonmenu-event"); |
7748 | staticpro (&Qlast_nonmenu_event); | |
7749 | ||
d0d6b7c5 | 7750 | staticpro (&Vprocess_alist); |
a5cfdda8 KS |
7751 | #ifdef SIGCHLD |
7752 | staticpro (&deleted_pid_list); | |
7753 | #endif | |
d0d6b7c5 | 7754 | |
934e2a68 EZ |
7755 | Qeuid = intern ("euid"); |
7756 | staticpro (&Qeuid); | |
7757 | Qegid = intern ("egid"); | |
7758 | staticpro (&Qegid); | |
7759 | Quser = intern ("user"); | |
7760 | staticpro (&Quser); | |
7761 | Qgroup = intern ("group"); | |
7762 | staticpro (&Qgroup); | |
7763 | Qcomm = intern ("comm"); | |
7764 | staticpro (&Qcomm); | |
7765 | Qstate = intern ("state"); | |
7766 | staticpro (&Qstate); | |
7767 | Qppid = intern ("ppid"); | |
7768 | staticpro (&Qppid); | |
7769 | Qpgrp = intern ("pgrp"); | |
7770 | staticpro (&Qpgrp); | |
7771 | Qsess = intern ("sess"); | |
7772 | staticpro (&Qsess); | |
7773 | Qttname = intern ("ttname"); | |
7774 | staticpro (&Qttname); | |
7775 | Qtpgid = intern ("tpgid"); | |
7776 | staticpro (&Qtpgid); | |
7777 | Qminflt = intern ("minflt"); | |
7778 | staticpro (&Qminflt); | |
7779 | Qmajflt = intern ("majflt"); | |
7780 | staticpro (&Qmajflt); | |
7781 | Qcminflt = intern ("cminflt"); | |
7782 | staticpro (&Qcminflt); | |
7783 | Qcmajflt = intern ("cmajflt"); | |
7784 | staticpro (&Qcmajflt); | |
7785 | Qutime = intern ("utime"); | |
7786 | staticpro (&Qutime); | |
7787 | Qstime = intern ("stime"); | |
7788 | staticpro (&Qstime); | |
7789 | Qcutime = intern ("cutime"); | |
7790 | staticpro (&Qcutime); | |
7791 | Qcstime = intern ("cstime"); | |
7792 | staticpro (&Qcstime); | |
7793 | Qpri = intern ("pri"); | |
7794 | staticpro (&Qpri); | |
7795 | Qnice = intern ("nice"); | |
7796 | staticpro (&Qnice); | |
7797 | Qthcount = intern ("thcount"); | |
7798 | staticpro (&Qthcount); | |
7799 | Qstart = intern ("start"); | |
7800 | staticpro (&Qstart); | |
7801 | Qvsize = intern ("vsize"); | |
7802 | staticpro (&Qvsize); | |
7803 | Qrss = intern ("rss"); | |
7804 | staticpro (&Qrss); | |
7805 | Qetime = intern ("etime"); | |
7806 | staticpro (&Qetime); | |
7807 | Qpcpu = intern ("pcpu"); | |
7808 | staticpro (&Qpcpu); | |
7809 | Qpmem = intern ("pmem"); | |
7810 | staticpro (&Qpmem); | |
7811 | Qargs = intern ("args"); | |
7812 | staticpro (&Qargs); | |
7813 | ||
d0d6b7c5 | 7814 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, |
fdb82f93 | 7815 | doc: /* *Non-nil means delete processes immediately when they exit. |
d4e83d5c | 7816 | A value of nil means don't delete them until `list-processes' is run. */); |
d0d6b7c5 JB |
7817 | |
7818 | delete_exited_processes = 1; | |
7819 | ||
7820 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
7821 | doc: /* Control type of device used to communicate with subprocesses. |
7822 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7823 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7824 | then a pipe is used in any case. | |
7825 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
7826 | Vprocess_connection_type = Qt; |
7827 | ||
6b61353c KH |
7828 | #ifdef ADAPTIVE_READ_BUFFERING |
7829 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
7830 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
f3d9532b | 7831 | On some systems, when Emacs reads the output from a subprocess, the output data |
6b61353c | 7832 | is read in very small blocks, potentially resulting in very poor performance. |
2de35a25 | 7833 | This behavior can be remedied to some extent by setting this variable to a |
6b61353c | 7834 | non-nil value, as it will automatically delay reading from such processes, to |
635a3496 | 7835 | allow them to produce more output before Emacs tries to read it. |
6b61353c KH |
7836 | If the value is t, the delay is reset after each write to the process; any other |
7837 | non-nil value means that the delay is not reset on write. | |
7838 | The variable takes effect when `start-process' is called. */); | |
7839 | Vprocess_adaptive_read_buffering = Qt; | |
7840 | #endif | |
7841 | ||
d0d6b7c5 JB |
7842 | defsubr (&Sprocessp); |
7843 | defsubr (&Sget_process); | |
7844 | defsubr (&Sget_buffer_process); | |
7845 | defsubr (&Sdelete_process); | |
7846 | defsubr (&Sprocess_status); | |
7847 | defsubr (&Sprocess_exit_status); | |
7848 | defsubr (&Sprocess_id); | |
7849 | defsubr (&Sprocess_name); | |
3b9a3dfa | 7850 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
7851 | defsubr (&Sprocess_command); |
7852 | defsubr (&Sset_process_buffer); | |
7853 | defsubr (&Sprocess_buffer); | |
7854 | defsubr (&Sprocess_mark); | |
7855 | defsubr (&Sset_process_filter); | |
7856 | defsubr (&Sprocess_filter); | |
7857 | defsubr (&Sset_process_sentinel); | |
7858 | defsubr (&Sprocess_sentinel); | |
de282a05 | 7859 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
7860 | defsubr (&Sset_process_inherit_coding_system_flag); |
7861 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
7862 | defsubr (&Sset_process_query_on_exit_flag); |
7863 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 7864 | defsubr (&Sprocess_contact); |
faa7db08 KS |
7865 | defsubr (&Sprocess_plist); |
7866 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
7867 | defsubr (&Slist_processes); |
7868 | defsubr (&Sprocess_list); | |
7869 | defsubr (&Sstart_process); | |
d888760c GM |
7870 | #ifdef HAVE_SERIAL |
7871 | defsubr (&Sserial_process_configure); | |
7872 | defsubr (&Smake_serial_process); | |
7873 | #endif /* HAVE_SERIAL */ | |
d0d6b7c5 | 7874 | #ifdef HAVE_SOCKETS |
6b61353c | 7875 | defsubr (&Sset_network_process_option); |
e690ca94 | 7876 | defsubr (&Smake_network_process); |
991234f0 | 7877 | defsubr (&Sformat_network_address); |
d0d6b7c5 | 7878 | #endif /* HAVE_SOCKETS */ |
6b61353c KH |
7879 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
7880 | #ifdef SIOCGIFCONF | |
7881 | defsubr (&Snetwork_interface_list); | |
7882 | #endif | |
7883 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
7884 | defsubr (&Snetwork_interface_info); | |
7885 | #endif | |
7886 | #endif /* HAVE_SOCKETS ... */ | |
e690ca94 KS |
7887 | #ifdef DATAGRAM_SOCKETS |
7888 | defsubr (&Sprocess_datagram_address); | |
7889 | defsubr (&Sset_process_datagram_address); | |
7890 | #endif | |
d0d6b7c5 JB |
7891 | defsubr (&Saccept_process_output); |
7892 | defsubr (&Sprocess_send_region); | |
7893 | defsubr (&Sprocess_send_string); | |
7894 | defsubr (&Sinterrupt_process); | |
7895 | defsubr (&Skill_process); | |
7896 | defsubr (&Squit_process); | |
7897 | defsubr (&Sstop_process); | |
7898 | defsubr (&Scontinue_process); | |
b81ea5ef | 7899 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
7900 | defsubr (&Sprocess_send_eof); |
7901 | defsubr (&Ssignal_process); | |
7902 | defsubr (&Swaiting_for_user_input_p); | |
d888760c | 7903 | defsubr (&Sprocess_type); |
0fa1789e KH |
7904 | defsubr (&Sset_process_coding_system); |
7905 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
7906 | defsubr (&Sset_process_filter_multibyte); |
7907 | defsubr (&Sprocess_filter_multibyte_p); | |
934e2a68 EZ |
7908 | defsubr (&Slist_system_processes); |
7909 | defsubr (&Ssystem_process_attributeses); | |
d0d6b7c5 JB |
7910 | } |
7911 | ||
6720a7fb JB |
7912 | \f |
7913 | #else /* not subprocesses */ | |
7914 | ||
7915 | #include <sys/types.h> | |
7916 | #include <errno.h> | |
934e2a68 EZ |
7917 | #include <sys/stat.h> |
7918 | #include <stdlib.h> | |
7919 | #include <fcntl.h> | |
7920 | #ifdef HAVE_UNISTD_H | |
7921 | #include <unistd.h> | |
7922 | #endif | |
6720a7fb JB |
7923 | |
7924 | #include "lisp.h" | |
7925 | #include "systime.h" | |
5bbf78c1 | 7926 | #include "character.h" |
52a1b894 | 7927 | #include "coding.h" |
6720a7fb | 7928 | #include "termopts.h" |
81afb6d1 | 7929 | #include "sysselect.h" |
6720a7fb | 7930 | |
ff11dfa1 | 7931 | extern int frame_garbaged; |
6720a7fb | 7932 | |
f694e5d2 KH |
7933 | extern EMACS_TIME timer_check (); |
7934 | extern int timers_run; | |
6720a7fb | 7935 | |
8c57b2e5 | 7936 | Lisp_Object QCtype, QCname; |
9057ff80 | 7937 | |
6720a7fb JB |
7938 | /* As described above, except assuming that there are no subprocesses: |
7939 | ||
7940 | Wait for timeout to elapse and/or keyboard input to be available. | |
7941 | ||
7942 | time_limit is: | |
7943 | timeout in seconds, or | |
7944 | zero for no limit, or | |
7945 | -1 means gobble data immediately available but don't wait for any. | |
7946 | ||
f76475ad | 7947 | read_kbd is a Lisp_Object: |
6720a7fb JB |
7948 | 0 to ignore keyboard input, or |
7949 | 1 to return when input is available, or | |
7950 | -1 means caller will actually read the input, so don't throw to | |
7951 | the quit handler. | |
b89a415a KS |
7952 | |
7953 | see full version for other parameters. We know that wait_proc will | |
7954 | always be NULL, since `subprocesses' isn't defined. | |
6720a7fb JB |
7955 | |
7956 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 7957 | output that arrives. |
6720a7fb | 7958 | |
e0f24100 | 7959 | Return true if we received input from any process. */ |
6720a7fb JB |
7960 | |
7961 | int | |
214d6069 KS |
7962 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
7963 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
7964 | int time_limit, microsecs, read_kbd, do_display; |
7965 | Lisp_Object wait_for_cell; | |
7966 | struct Lisp_Process *wait_proc; | |
7967 | int just_wait_proc; | |
6720a7fb | 7968 | { |
52fd88d3 | 7969 | register int nfds; |
f694e5d2 | 7970 | EMACS_TIME end_time, timeout; |
8db121c4 | 7971 | SELECT_TYPE waitchannels; |
f694e5d2 | 7972 | int xerrno; |
6720a7fb JB |
7973 | |
7974 | /* What does time_limit really mean? */ | |
7975 | if (time_limit || microsecs) | |
7976 | { | |
6720a7fb | 7977 | EMACS_GET_TIME (end_time); |
52fd88d3 | 7978 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
7979 | EMACS_ADD_TIME (end_time, end_time, timeout); |
7980 | } | |
6720a7fb JB |
7981 | |
7982 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 7983 | and then turn off any other atimers, |
6720a7fb | 7984 | because the select emulator uses alarms. */ |
75eb23f1 | 7985 | stop_polling (); |
30904ab7 | 7986 | turn_on_atimers (0); |
6720a7fb | 7987 | |
52fd88d3 | 7988 | while (1) |
6720a7fb | 7989 | { |
bae8d137 | 7990 | int timeout_reduced_for_timers = 0; |
6720a7fb | 7991 | |
6720a7fb JB |
7992 | /* If calling from keyboard input, do not quit |
7993 | since we want to return C-g as an input character. | |
7994 | Otherwise, do pending quit if requested. */ | |
b89a415a | 7995 | if (read_kbd >= 0) |
6720a7fb JB |
7996 | QUIT; |
7997 | ||
0a65b032 | 7998 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7999 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
8000 | break; |
8001 | ||
bae8d137 RS |
8002 | /* Compute time from now till when time limit is up */ |
8003 | /* Exit if already run out */ | |
52fd88d3 EZ |
8004 | if (time_limit == -1) |
8005 | { | |
8006 | /* -1 specified for timeout means | |
8007 | gobble output available now | |
8008 | but don't wait at all. */ | |
8009 | ||
8010 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
8011 | } | |
8012 | else if (time_limit || microsecs) | |
6720a7fb | 8013 | { |
f694e5d2 KH |
8014 | EMACS_GET_TIME (timeout); |
8015 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
8016 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
8017 | break; |
8018 | } | |
52fd88d3 EZ |
8019 | else |
8020 | { | |
8021 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
8022 | } | |
6720a7fb | 8023 | |
bae8d137 RS |
8024 | /* If our caller will not immediately handle keyboard events, |
8025 | run timer events directly. | |
8026 | (Callers that will immediately read keyboard events | |
8027 | call timer_delay on their own.) */ | |
f3fbd155 | 8028 | if (NILP (wait_for_cell)) |
bae8d137 RS |
8029 | { |
8030 | EMACS_TIME timer_delay; | |
0a65b032 | 8031 | |
9baacf76 | 8032 | do |
0a65b032 | 8033 | { |
9baacf76 GM |
8034 | int old_timers_run = timers_run; |
8035 | timer_delay = timer_check (1); | |
8036 | if (timers_run != old_timers_run && do_display) | |
8037 | /* We must retry, since a timer may have requeued itself | |
8038 | and that could alter the time delay. */ | |
3007ebfb | 8039 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
8040 | else |
8041 | break; | |
0a65b032 | 8042 | } |
9baacf76 | 8043 | while (!detect_input_pending ()); |
0a65b032 | 8044 | |
52fd88d3 | 8045 | /* If there is unread keyboard input, also return. */ |
b89a415a | 8046 | if (read_kbd != 0 |
52fd88d3 EZ |
8047 | && requeued_events_pending_p ()) |
8048 | break; | |
8049 | ||
f694e5d2 | 8050 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
8051 | { |
8052 | EMACS_TIME difference; | |
f694e5d2 | 8053 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
8054 | if (EMACS_TIME_NEG_P (difference)) |
8055 | { | |
f694e5d2 | 8056 | timeout = timer_delay; |
bae8d137 RS |
8057 | timeout_reduced_for_timers = 1; |
8058 | } | |
8059 | } | |
8060 | } | |
8061 | ||
6720a7fb JB |
8062 | /* Cause C-g and alarm signals to take immediate action, |
8063 | and cause input available signals to zero out timeout. */ | |
b89a415a | 8064 | if (read_kbd < 0) |
6720a7fb JB |
8065 | set_waiting_for_input (&timeout); |
8066 | ||
0a65b032 RS |
8067 | /* Wait till there is something to do. */ |
8068 | ||
b89a415a | 8069 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
8070 | FD_ZERO (&waitchannels); |
8071 | else | |
8072 | FD_SET (0, &waitchannels); | |
8073 | ||
ff11dfa1 | 8074 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 8075 | reprocess its display stuff. */ |
5164ee8e | 8076 | if (frame_garbaged && do_display) |
0a65b032 RS |
8077 | { |
8078 | clear_waiting_for_input (); | |
3007ebfb | 8079 | redisplay_preserve_echo_area (15); |
b89a415a | 8080 | if (read_kbd < 0) |
0a65b032 RS |
8081 | set_waiting_for_input (&timeout); |
8082 | } | |
6720a7fb | 8083 | |
b89a415a | 8084 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
8085 | { |
8086 | nfds = 0; | |
8087 | FD_ZERO (&waitchannels); | |
8088 | } | |
8089 | else | |
8090 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
8091 | &timeout); | |
f694e5d2 KH |
8092 | |
8093 | xerrno = errno; | |
6720a7fb JB |
8094 | |
8095 | /* Make C-g and alarm signals set flags again */ | |
8096 | clear_waiting_for_input (); | |
8097 | ||
8098 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 8099 | do_pending_window_change (0); |
6720a7fb | 8100 | |
f694e5d2 KH |
8101 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
8102 | /* We waited the full specified time, so return now. */ | |
8103 | break; | |
8104 | ||
6720a7fb JB |
8105 | if (nfds == -1) |
8106 | { | |
8107 | /* If the system call was interrupted, then go around the | |
8108 | loop again. */ | |
f694e5d2 | 8109 | if (xerrno == EINTR) |
8db121c4 | 8110 | FD_ZERO (&waitchannels); |
f694e5d2 | 8111 | else |
68c45bf0 | 8112 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 8113 | } |
89f1e540 | 8114 | #ifdef SOLARIS2 |
6720a7fb JB |
8115 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) |
8116 | /* System sometimes fails to deliver SIGIO. */ | |
8117 | kill (getpid (), SIGIO); | |
8118 | #endif | |
7324d660 | 8119 | #ifdef SIGIO |
b89a415a | 8120 | if (read_kbd && interrupt_input && (waitchannels & 1)) |
e643c5be | 8121 | kill (getpid (), SIGIO); |
7324d660 | 8122 | #endif |
6720a7fb | 8123 | |
f694e5d2 KH |
8124 | /* Check for keyboard input */ |
8125 | ||
b89a415a | 8126 | if (read_kbd |
78c1afb6 | 8127 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 8128 | { |
78c1afb6 | 8129 | swallow_events (do_display); |
f694e5d2 | 8130 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 8131 | break; |
78c1afb6 EZ |
8132 | } |
8133 | ||
52fd88d3 | 8134 | /* If there is unread keyboard input, also return. */ |
b89a415a | 8135 | if (read_kbd |
52fd88d3 EZ |
8136 | && requeued_events_pending_p ()) |
8137 | break; | |
8138 | ||
f854a00b RS |
8139 | /* If wait_for_cell. check for keyboard input |
8140 | but don't run any timers. | |
8141 | ??? (It seems wrong to me to check for keyboard | |
8142 | input at all when wait_for_cell, but the code | |
8143 | has been this way since July 1994. | |
8144 | Try changing this after version 19.31.) */ | |
f3fbd155 | 8145 | if (! NILP (wait_for_cell) |
f854a00b RS |
8146 | && detect_input_pending ()) |
8147 | { | |
8148 | swallow_events (do_display); | |
8149 | if (detect_input_pending ()) | |
8150 | break; | |
8151 | } | |
8152 | ||
0a65b032 | 8153 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 8154 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 8155 | break; |
6720a7fb JB |
8156 | } |
8157 | ||
a87b802f JB |
8158 | start_polling (); |
8159 | ||
6720a7fb JB |
8160 | return 0; |
8161 | } | |
8162 | ||
8163 | ||
e2ba787b PJ |
8164 | /* Don't confuse make-docfile by having two doc strings for this function. |
8165 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 8166 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
8167 | 0) |
8168 | (name) | |
6720a7fb JB |
8169 | register Lisp_Object name; |
8170 | { | |
8171 | return Qnil; | |
8172 | } | |
8173 | ||
e2ba787b PJ |
8174 | /* Don't confuse make-docfile by having two doc strings for this function. |
8175 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 8176 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
8177 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
8178 | 1, 1, 0, | |
8179 | 0) | |
8180 | (process) | |
52a1b894 EZ |
8181 | register Lisp_Object process; |
8182 | { | |
8183 | /* Ignore the argument and return the value of | |
8184 | inherit-process-coding-system. */ | |
8185 | return inherit_process_coding_system ? Qt : Qnil; | |
8186 | } | |
8187 | ||
6720a7fb JB |
8188 | /* Kill all processes associated with `buffer'. |
8189 | If `buffer' is nil, kill all processes. | |
8190 | Since we have no subprocesses, this does nothing. */ | |
8191 | ||
d9bb0c32 | 8192 | void |
6720a7fb JB |
8193 | kill_buffer_processes (buffer) |
8194 | Lisp_Object buffer; | |
8195 | { | |
8196 | } | |
8197 | ||
934e2a68 EZ |
8198 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
8199 | 0, 0, 0, | |
8200 | doc: /* Return a list of numerical process IDs of all running processes. | |
8201 | If this functionality is unsupported, return nil. | |
8202 | ||
8203 | See `system-process-attributes' for getting attributes of a process | |
8204 | given its ID. */) | |
8205 | () | |
8206 | { | |
8207 | return Qnil; | |
8208 | } | |
8209 | ||
8210 | DEFUN ("system-process-attributes", Fsystem_process_attributes, | |
8211 | Ssystem_process_attributeses, 1, 1, 0, | |
8212 | doc: /* Return attributes of the process given by its PID, a number. | |
8213 | ||
8214 | Value is an alist where each element is a cons cell of the form | |
8215 | ||
8216 | \(ATTR . VALUE) | |
8217 | ||
8218 | If this functionality is unsupported, the value is nil. | |
8219 | ||
8220 | See `list-system-processes' for getting a list of all process IDs. | |
8221 | ||
8222 | The attributes that this function may return are listed below, | |
8223 | together with the type of the associated value (in parentheses). | |
8f8b082a EZ |
8224 | Not all platforms support all of these attributes; unsupported |
8225 | attributes will not appear in the returned alist. | |
934e2a68 EZ |
8226 | Unless explicitly indicated otherwise, numbers can have either |
8227 | integer or floating point values. | |
8228 | ||
8229 | euid -- Effective user User ID of the process (number) | |
8230 | user -- User name corresponding to euid (string) | |
8231 | egid -- Effective user Group ID of the process (number) | |
8232 | group -- Group name corresponding to egid (string) | |
8233 | comm -- Command name (executable name only) (string) | |
8234 | state -- Process state code, such as "S", "R", or "T" (string) | |
8235 | ppid -- Parent process ID (number) | |
8236 | pgrp -- Process group ID (number) | |
8237 | sess -- Session ID, i.e. process ID of session leader (number) | |
8238 | ttname -- Controlling tty name (string) | |
8239 | tpgid -- ID of foreground process group on the process's tty (number) | |
8240 | minflt -- number of minor page faults (number) | |
8241 | majflt -- number of major page faults (number) | |
8242 | cminflt -- cumulative number of minor page faults (number) | |
8243 | cmajflt -- cumulative number of major page faults (number) | |
8244 | utime -- user time used by the process, in the (HIGH LOW USEC) format | |
8245 | stime -- system time used by the process, in the (HIGH LOW USEC) format | |
8246 | cutime -- user time used by the process and its children, (HIGH LOW USEC) | |
8247 | cstime -- system time used by the process and its children, (HIGH LOW USEC) | |
8248 | pri -- priority of the process (number) | |
8249 | nice -- nice value of the process (number) | |
8250 | thcount -- process thread count (number) | |
8251 | start -- time the process started, in the (HIGH LOW USEC) format | |
8252 | vsize -- virtual memory size of the process in KB's (number) | |
8253 | rss -- resident set size of the process in KB's (number) | |
8254 | etime -- elapsed time the process is running, in (HIGH LOW USEC) format | |
8255 | pcpu -- percents of CPU time used by the process (floating-point number) | |
8256 | pmem -- percents of total physical memory used by process's resident set | |
8257 | (floating-point number) | |
8258 | args -- command line which invoked the process (string). */) | |
8259 | (pid) | |
8260 | ||
8261 | Lisp_Object pid; | |
8262 | { | |
8263 | return Qnil; | |
8264 | } | |
8265 | ||
02b9b4fd | 8266 | void |
6720a7fb JB |
8267 | init_process () |
8268 | { | |
8269 | } | |
8270 | ||
02b9b4fd | 8271 | void |
6720a7fb JB |
8272 | syms_of_process () |
8273 | { | |
9057ff80 KS |
8274 | QCtype = intern (":type"); |
8275 | staticpro (&QCtype); | |
8c57b2e5 EZ |
8276 | QCname = intern (":name"); |
8277 | staticpro (&QCname); | |
9057ff80 | 8278 | |
6720a7fb | 8279 | defsubr (&Sget_buffer_process); |
52a1b894 | 8280 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 EZ |
8281 | defsubr (&Slist_system_processes); |
8282 | defsubr (&Ssystem_process_attributeses); | |
6720a7fb JB |
8283 | } |
8284 | ||
8285 | \f | |
8286 | #endif /* not subprocesses */ | |
6b61353c KH |
8287 | |
8288 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
8289 | (do not change this comment) */ |