Commit | Line | Data |
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d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
0b5538bd | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, |
63136da6 | 3 | 1996, 1998, 1999, 2001, 2002, 2003, 2004, |
6a1bab0e | 4 | 2005, 2006, 2007, 2008, 2009 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> | |
36 | #include <errno.h> | |
37 | #include <setjmp.h> | |
38 | #include <sys/types.h> /* some typedefs are used in sys/file.h */ | |
39 | #include <sys/file.h> | |
40 | #include <sys/stat.h> | |
d7306fe6 | 41 | #include <setjmp.h> |
2026418c YM |
42 | #ifdef HAVE_INTTYPES_H |
43 | #include <inttypes.h> | |
44 | #endif | |
63136da6 AS |
45 | #ifdef STDC_HEADERS |
46 | #include <stdlib.h> | |
47 | #endif | |
934e2a68 | 48 | |
93b4f699 RS |
49 | #ifdef HAVE_UNISTD_H |
50 | #include <unistd.h> | |
51 | #endif | |
e98d950b | 52 | #include <fcntl.h> |
e98d950b | 53 | |
d0d6b7c5 JB |
54 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
55 | #include <sys/socket.h> | |
56 | #include <netdb.h> | |
57 | #include <netinet/in.h> | |
58 | #include <arpa/inet.h> | |
e690ca94 KS |
59 | |
60 | /* Are local (unix) sockets supported? */ | |
4624371d | 61 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
62 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
63 | #define AF_LOCAL AF_UNIX | |
64 | #endif | |
65 | #ifdef AF_LOCAL | |
66 | #define HAVE_LOCAL_SOCKETS | |
67 | #include <sys/un.h> | |
68 | #endif | |
69 | #endif | |
d0d6b7c5 JB |
70 | #endif /* HAVE_SOCKETS */ |
71 | ||
e39a993c | 72 | #if defined(BSD_SYSTEM) |
d0d6b7c5 | 73 | #include <sys/ioctl.h> |
0ad77c54 | 74 | #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5) |
d0d6b7c5 JB |
75 | #include <fcntl.h> |
76 | #endif /* HAVE_PTYS and no O_NDELAY */ | |
e39a993c | 77 | #endif /* BSD_SYSTEM */ |
d0d6b7c5 JB |
78 | |
79 | #ifdef NEED_BSDTTY | |
80 | #include <bsdtty.h> | |
81 | #endif | |
82 | ||
6b61353c KH |
83 | /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */ |
84 | #ifdef HAVE_SOCKETS | |
85 | #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H) | |
86 | /* sys/ioctl.h may have been included already */ | |
87 | #ifndef SIOCGIFADDR | |
88 | #include <sys/ioctl.h> | |
89 | #endif | |
90 | #include <net/if.h> | |
91 | #endif | |
92 | #endif | |
93 | ||
e62cab61 DL |
94 | #ifdef HAVE_SYS_WAIT |
95 | #include <sys/wait.h> | |
96 | #endif | |
d0d6b7c5 | 97 | |
08116b48 CY |
98 | #ifdef HAVE_RES_INIT |
99 | #include <netinet/in.h> | |
100 | #include <arpa/nameser.h> | |
101 | #include <resolv.h> | |
102 | #endif | |
103 | ||
fa8459a3 | 104 | #include "lisp.h" |
d0d6b7c5 | 105 | #include "systime.h" |
36ebaafa | 106 | #include "systty.h" |
d0d6b7c5 | 107 | |
d0d6b7c5 JB |
108 | #include "window.h" |
109 | #include "buffer.h" | |
5bbf78c1 | 110 | #include "character.h" |
0fa1789e | 111 | #include "coding.h" |
d0d6b7c5 | 112 | #include "process.h" |
428a555e | 113 | #include "frame.h" |
d0d6b7c5 JB |
114 | #include "termhooks.h" |
115 | #include "termopts.h" | |
116 | #include "commands.h" | |
3ec68006 | 117 | #include "keyboard.h" |
ececcbec | 118 | #include "blockinput.h" |
dfcf069d | 119 | #include "dispextern.h" |
e0016554 | 120 | #include "composite.h" |
30904ab7 | 121 | #include "atimer.h" |
d0d6b7c5 | 122 | |
872870b2 JD |
123 | #if defined (USE_GTK) || defined (HAVE_GCONF) |
124 | #include "xgselect.h" | |
125 | #endif /* defined (USE_GTK) || defined (HAVE_GCONF) */ | |
126 | ||
dd2281ae | 127 | Lisp_Object Qprocessp; |
324e68ba | 128 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 129 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
f00c449b | 130 | Lisp_Object Qlocal, Qipv4, Qdatagram, Qseqpacket; |
d888760c | 131 | Lisp_Object Qreal, Qnetwork, Qserial; |
e1652a86 KS |
132 | #ifdef AF_INET6 |
133 | Lisp_Object Qipv6; | |
134 | #endif | |
d888760c GM |
135 | Lisp_Object QCport, QCspeed, QCprocess; |
136 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; | |
137 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
9057ff80 | 138 | Lisp_Object QCname, QCbuffer, QChost, QCservice, QCtype; |
e690ca94 | 139 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 140 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 141 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
6545aada | 142 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
143 | /* QCfamily is declared and initialized in xfaces.c, |
144 | QCfilter in keyboard.c. */ | |
145 | extern Lisp_Object QCfamily, QCfilter; | |
146 | ||
d0d6b7c5 JB |
147 | /* Qexit is declared and initialized in eval.c. */ |
148 | ||
e0f712ba AC |
149 | /* QCfamily is defined in xfaces.c. */ |
150 | extern Lisp_Object QCfamily; | |
151 | /* QCfilter is defined in keyboard.c. */ | |
152 | extern Lisp_Object QCfilter; | |
153 | ||
934e2a68 EZ |
154 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
155 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
156 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
89c874cf | 157 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; |
934e2a68 | 158 | |
d0d6b7c5 | 159 | #ifdef HAVE_SOCKETS |
d888760c GM |
160 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
161 | #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork)) | |
162 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
163 | #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial)) | |
d0d6b7c5 JB |
164 | #else |
165 | #define NETCONN_P(p) 0 | |
e690ca94 | 166 | #define NETCONN1_P(p) 0 |
d888760c GM |
167 | #define SERIALCONN_P(p) 0 |
168 | #define SERIALCONN1_P(p) 0 | |
d0d6b7c5 JB |
169 | #endif /* HAVE_SOCKETS */ |
170 | ||
171 | /* Define first descriptor number available for subprocesses. */ | |
d0d6b7c5 | 172 | #define FIRST_PROC_DESC 3 |
d0d6b7c5 JB |
173 | |
174 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
175 | testing SIGCHLD. */ | |
176 | ||
177 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
178 | #define SIGCHLD SIGCLD | |
179 | #endif /* SIGCLD */ | |
180 | ||
181 | #include "syssignal.h" | |
182 | ||
889255b4 | 183 | #include "syswait.h" |
d0d6b7c5 | 184 | |
d9e7c622 | 185 | extern char *get_operating_system_release (); |
41d03b9a | 186 | |
d888760c GM |
187 | /* Serial processes require termios or Windows. */ |
188 | #if defined (HAVE_TERMIOS) || defined (WINDOWSNT) | |
189 | #define HAVE_SERIAL | |
190 | #endif | |
191 | ||
192 | #ifdef HAVE_SERIAL | |
193 | /* From sysdep.c or w32.c */ | |
194 | extern int serial_open (char *port); | |
195 | extern void serial_configure (struct Lisp_Process *p, Lisp_Object contact); | |
196 | #endif | |
197 | ||
3ec68006 | 198 | #ifndef USE_CRT_DLL |
b062d1fe | 199 | extern int errno; |
3ec68006 | 200 | #endif |
d0d6b7c5 | 201 | |
5f0929a7 RS |
202 | #ifndef HAVE_H_ERRNO |
203 | extern int h_errno; | |
204 | #endif | |
205 | ||
d0d6b7c5 JB |
206 | /* t means use pty, nil means use a pipe, |
207 | maybe other values to come. */ | |
dd2281ae | 208 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 | 209 | |
17d02632 KH |
210 | /* These next two vars are non-static since sysdep.c uses them in the |
211 | emulation of `select'. */ | |
d0d6b7c5 | 212 | /* Number of events of change of status of a process. */ |
17d02632 | 213 | int process_tick; |
d0d6b7c5 | 214 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 215 | int update_tick; |
d0d6b7c5 | 216 | |
dd2a17ab KS |
217 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
218 | ||
219 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
220 | #undef NON_BLOCKING_CONNECT | |
221 | #else | |
222 | #ifndef NON_BLOCKING_CONNECT | |
223 | #ifdef HAVE_SOCKETS | |
224 | #ifdef HAVE_SELECT | |
225 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
226 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
227 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
228 | #define NON_BLOCKING_CONNECT | |
229 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
230 | #endif /* O_NONBLOCK || O_NDELAY */ | |
231 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
232 | #endif /* HAVE_SELECT */ | |
233 | #endif /* HAVE_SOCKETS */ | |
234 | #endif /* NON_BLOCKING_CONNECT */ | |
235 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
236 | ||
e690ca94 KS |
237 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
238 | this system. We need to read full packets, so we need a | |
239 | "non-destructive" select. So we require either native select, | |
240 | or emulation of select using FIONREAD. */ | |
241 | ||
e690ca94 KS |
242 | #ifdef BROKEN_DATAGRAM_SOCKETS |
243 | #undef DATAGRAM_SOCKETS | |
244 | #else | |
245 | #ifndef DATAGRAM_SOCKETS | |
246 | #ifdef HAVE_SOCKETS | |
247 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
248 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
249 | #define DATAGRAM_SOCKETS | |
250 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
251 | #endif /* HAVE_SELECT || FIONREAD */ | |
252 | #endif /* HAVE_SOCKETS */ | |
253 | #endif /* DATAGRAM_SOCKETS */ | |
254 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
255 | ||
f00c449b SM |
256 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
257 | # define HAVE_SEQPACKET | |
258 | #endif | |
259 | ||
6b61353c KH |
260 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
261 | #ifdef EMACS_HAS_USECS | |
262 | #define ADAPTIVE_READ_BUFFERING | |
263 | #endif | |
264 | #endif | |
265 | ||
266 | #ifdef ADAPTIVE_READ_BUFFERING | |
267 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
268 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
269 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
270 | ||
db853b7a KS |
271 | /* Number of processes which have a non-zero read_output_delay, |
272 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
273 | |
274 | static int process_output_delay_count; | |
275 | ||
db853b7a | 276 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
277 | |
278 | static int process_output_skip; | |
279 | ||
280 | /* Non-nil means to delay reading process output to improve buffering. | |
281 | A value of t means that delay is reset after each send, any other | |
db853b7a KS |
282 | non-nil value does not reset the delay. A value of nil disables |
283 | adaptive read buffering completely. */ | |
6b61353c KH |
284 | static Lisp_Object Vprocess_adaptive_read_buffering; |
285 | #else | |
286 | #define process_output_delay_count 0 | |
287 | #endif | |
288 | ||
e690ca94 | 289 | |
5886acf9 | 290 | #include "sysselect.h" |
d0d6b7c5 | 291 | |
ff6daed3 KS |
292 | static int keyboard_bit_set P_ ((SELECT_TYPE *)); |
293 | static void deactivate_process P_ ((Lisp_Object)); | |
294 | static void status_notify P_ ((struct Lisp_Process *)); | |
295 | static int read_process_output P_ ((Lisp_Object, int)); | |
850d0752 | 296 | static void create_pty P_ ((Lisp_Object)); |
41d03b9a | 297 | |
583dcae4 | 298 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 299 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 300 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
301 | #define POLL_FOR_INPUT |
302 | #endif | |
303 | ||
84af9896 RS |
304 | static Lisp_Object get_process (); |
305 | static void exec_sentinel (); | |
306 | ||
84af9896 RS |
307 | extern int timers_run; |
308 | \f | |
a69281ff | 309 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 310 | |
dd2281ae RS |
311 | static SELECT_TYPE input_wait_mask; |
312 | ||
994d9841 | 313 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
314 | |
315 | static SELECT_TYPE non_keyboard_wait_mask; | |
316 | ||
994d9841 | 317 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
318 | |
319 | static SELECT_TYPE non_process_wait_mask; | |
320 | ||
994d9841 NR |
321 | /* Mask for the gpm mouse input descriptor. */ |
322 | ||
323 | static SELECT_TYPE gpm_wait_mask; | |
324 | ||
bad49fc7 | 325 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
326 | /* Mask of bits indicating the descriptors that we wait for connect to |
327 | complete on. Once they complete, they are removed from this mask | |
328 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
329 | ||
330 | static SELECT_TYPE connect_wait_mask; | |
331 | ||
332 | /* Number of bits set in connect_wait_mask. */ | |
333 | static int num_pending_connects; | |
334 | ||
bad49fc7 KS |
335 | #define IF_NON_BLOCKING_CONNECT(s) s |
336 | #else | |
337 | #define IF_NON_BLOCKING_CONNECT(s) | |
338 | #endif | |
339 | ||
7d0e672e RS |
340 | /* The largest descriptor currently in use for a process object. */ |
341 | static int max_process_desc; | |
342 | ||
a69281ff RS |
343 | /* The largest descriptor currently in use for keyboard input. */ |
344 | static int max_keyboard_desc; | |
d0d6b7c5 | 345 | |
994d9841 NR |
346 | /* The largest descriptor currently in use for gpm mouse input. */ |
347 | static int max_gpm_desc; | |
348 | ||
dd2281ae RS |
349 | /* Nonzero means delete a process right away if it exits. */ |
350 | static int delete_exited_processes; | |
d0d6b7c5 JB |
351 | |
352 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 353 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
354 | |
355 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 356 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
357 | |
358 | /* Buffered-ahead input char from process, indexed by channel. | |
359 | -1 means empty (no char is buffered). | |
360 | Used on sys V where the only way to tell if there is any | |
361 | output from the process is to read at least one char. | |
362 | Always -1 on systems that support FIONREAD. */ | |
363 | ||
e98d950b RS |
364 | /* Don't make static; need to access externally. */ |
365 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 366 | |
0fa1789e | 367 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
368 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
369 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 370 | |
e690ca94 KS |
371 | #ifdef DATAGRAM_SOCKETS |
372 | /* Table of `partner address' for datagram sockets. */ | |
373 | struct sockaddr_and_len { | |
374 | struct sockaddr *sa; | |
375 | int len; | |
376 | } datagram_address[MAXDESC]; | |
377 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 378 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
379 | #else |
380 | #define DATAGRAM_CHAN_P(chan) (0) | |
381 | #define DATAGRAM_CONN_P(proc) (0) | |
382 | #endif | |
383 | ||
93b4f699 RS |
384 | /* Maximum number of bytes to send to a pty without an eof. */ |
385 | static int pty_max_bytes; | |
3b9a3dfa | 386 | |
84af9896 RS |
387 | /* Nonzero means don't run process sentinels. This is used |
388 | when exiting. */ | |
389 | int inhibit_sentinels; | |
390 | ||
875e6b94 | 391 | #ifdef HAVE_PTYS |
e62cab61 DL |
392 | #ifdef HAVE_PTY_H |
393 | #include <pty.h> | |
394 | #endif | |
875e6b94 | 395 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
396 | |
397 | static char pty_name[24]; | |
875e6b94 | 398 | #endif |
d0d6b7c5 JB |
399 | \f |
400 | /* Compute the Lisp form of the process status, p->status, from | |
401 | the numeric status that was returned by `wait'. */ | |
402 | ||
bba104c1 | 403 | static Lisp_Object status_convert (int); |
f9738840 | 404 | |
ff6daed3 | 405 | static void |
d0d6b7c5 JB |
406 | update_status (p) |
407 | struct Lisp_Process *p; | |
408 | { | |
6bfd98e7 | 409 | eassert (p->raw_status_new); |
bba104c1 | 410 | p->status = status_convert (p->raw_status); |
6bfd98e7 | 411 | p->raw_status_new = 0; |
d0d6b7c5 JB |
412 | } |
413 | ||
177c0ea7 | 414 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
415 | the list that we use internally. */ |
416 | ||
ff6daed3 | 417 | static Lisp_Object |
bba104c1 | 418 | status_convert (int w) |
d0d6b7c5 JB |
419 | { |
420 | if (WIFSTOPPED (w)) | |
421 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
422 | else if (WIFEXITED (w)) | |
423 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
424 | WCOREDUMP (w) ? Qt : Qnil)); | |
425 | else if (WIFSIGNALED (w)) | |
426 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
427 | WCOREDUMP (w) ? Qt : Qnil)); | |
428 | else | |
429 | return Qrun; | |
430 | } | |
431 | ||
432 | /* Given a status-list, extract the three pieces of information | |
433 | and store them individually through the three pointers. */ | |
434 | ||
ff6daed3 | 435 | static void |
d0d6b7c5 JB |
436 | decode_status (l, symbol, code, coredump) |
437 | Lisp_Object l; | |
438 | Lisp_Object *symbol; | |
439 | int *code; | |
440 | int *coredump; | |
441 | { | |
442 | Lisp_Object tem; | |
443 | ||
bcd69aea | 444 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
445 | { |
446 | *symbol = l; | |
447 | *code = 0; | |
448 | *coredump = 0; | |
449 | } | |
450 | else | |
451 | { | |
70949dac KR |
452 | *symbol = XCAR (l); |
453 | tem = XCDR (l); | |
454 | *code = XFASTINT (XCAR (tem)); | |
455 | tem = XCDR (tem); | |
d0d6b7c5 JB |
456 | *coredump = !NILP (tem); |
457 | } | |
458 | } | |
459 | ||
460 | /* Return a string describing a process status list. */ | |
461 | ||
116c423c KS |
462 | static Lisp_Object |
463 | status_message (p) | |
464 | struct Lisp_Process *p; | |
d0d6b7c5 | 465 | { |
116c423c | 466 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
467 | Lisp_Object symbol; |
468 | int code, coredump; | |
469 | Lisp_Object string, string2; | |
470 | ||
471 | decode_status (status, &symbol, &code, &coredump); | |
472 | ||
473 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
474 | { | |
68c45bf0 | 475 | char *signame; |
ca9c0567 | 476 | synchronize_system_messages_locale (); |
68c45bf0 | 477 | signame = strsignal (code); |
b97ad9ea | 478 | if (signame == 0) |
66bd43d1 KH |
479 | string = build_string ("unknown"); |
480 | else | |
481 | { | |
482 | int c1, c2; | |
483 | ||
484 | string = make_unibyte_string (signame, strlen (signame)); | |
485 | if (! NILP (Vlocale_coding_system)) | |
486 | string = (code_convert_string_norecord | |
487 | (string, Vlocale_coding_system, 0)); | |
62a6e103 | 488 | c1 = STRING_CHAR ((char *) SDATA (string)); |
66bd43d1 KH |
489 | c2 = DOWNCASE (c1); |
490 | if (c1 != c2) | |
4735b74e | 491 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 492 | } |
d0d6b7c5 | 493 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
494 | return concat2 (string, string2); |
495 | } | |
496 | else if (EQ (symbol, Qexit)) | |
497 | { | |
116c423c KS |
498 | if (NETCONN1_P (p)) |
499 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
500 | if (code == 0) |
501 | return build_string ("finished\n"); | |
f2980264 | 502 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 503 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
504 | return concat3 (build_string ("exited abnormally with code "), |
505 | string, string2); | |
d0d6b7c5 | 506 | } |
dd2a17ab KS |
507 | else if (EQ (symbol, Qfailed)) |
508 | { | |
509 | string = Fnumber_to_string (make_number (code)); | |
510 | string2 = build_string ("\n"); | |
e690ca94 KS |
511 | return concat3 (build_string ("failed with code "), |
512 | string, string2); | |
dd2a17ab | 513 | } |
d0d6b7c5 JB |
514 | else |
515 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
516 | } | |
517 | \f | |
518 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 519 | |
875e6b94 KH |
520 | /* Open an available pty, returning a file descriptor. |
521 | Return -1 on failure. | |
522 | The file name of the terminal corresponding to the pty | |
523 | is left in the variable pty_name. */ | |
524 | ||
ff6daed3 | 525 | static int |
d0d6b7c5 JB |
526 | allocate_pty () |
527 | { | |
dfcf069d | 528 | register int c, i; |
d0d6b7c5 JB |
529 | int fd; |
530 | ||
531 | #ifdef PTY_ITERATION | |
532 | PTY_ITERATION | |
533 | #else | |
534 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
535 | for (i = 0; i < 16; i++) | |
536 | #endif | |
537 | { | |
26d7389d | 538 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
539 | #ifdef PTY_NAME_SPRINTF |
540 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
541 | #else |
542 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
543 | #endif /* no PTY_NAME_SPRINTF */ |
544 | ||
4d7c105e RS |
545 | #ifdef PTY_OPEN |
546 | PTY_OPEN; | |
547 | #else /* no PTY_OPEN */ | |
34967d0f | 548 | { |
34967d0f SM |
549 | { /* Some systems name their pseudoterminals so that there are gaps in |
550 | the usual sequence - for example, on HP9000/S700 systems, there | |
551 | are no pseudoterminals with names ending in 'f'. So we wait for | |
552 | three failures in a row before deciding that we've reached the | |
553 | end of the ptys. */ | |
554 | int failed_count = 0; | |
f3d9532b | 555 | |
34967d0f SM |
556 | if (stat (pty_name, &stb) < 0) |
557 | { | |
558 | failed_count++; | |
559 | if (failed_count >= 3) | |
560 | return -1; | |
561 | } | |
562 | else | |
563 | failed_count = 0; | |
32676c08 | 564 | } |
34967d0f SM |
565 | # ifdef O_NONBLOCK |
566 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
567 | # else | |
568 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
569 | # endif | |
34967d0f | 570 | } |
4d7c105e | 571 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
572 | |
573 | if (fd >= 0) | |
574 | { | |
575 | /* check to make certain that both sides are available | |
576 | this avoids a nasty yet stupid bug in rlogins */ | |
577 | #ifdef PTY_TTY_NAME_SPRINTF | |
578 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 579 | #else |
63136da6 | 580 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 581 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
582 | if (access (pty_name, 6) != 0) |
583 | { | |
68c45bf0 | 584 | emacs_close (fd); |
132d0475 | 585 | # ifndef __sgi |
d0d6b7c5 | 586 | continue; |
34967d0f | 587 | # else |
d0d6b7c5 | 588 | return -1; |
132d0475 | 589 | # endif /* __sgi */ |
d0d6b7c5 | 590 | } |
d0d6b7c5 JB |
591 | setup_pty (fd); |
592 | return fd; | |
593 | } | |
594 | } | |
595 | return -1; | |
596 | } | |
597 | #endif /* HAVE_PTYS */ | |
598 | \f | |
ff6daed3 | 599 | static Lisp_Object |
d0d6b7c5 JB |
600 | make_process (name) |
601 | Lisp_Object name; | |
602 | { | |
603 | register Lisp_Object val, tem, name1; | |
604 | register struct Lisp_Process *p; | |
605 | char suffix[10]; | |
606 | register int i; | |
607 | ||
98423852 | 608 | p = allocate_process (); |
23d6bb9c | 609 | |
60f0fb11 SM |
610 | p->infd = -1; |
611 | p->outfd = -1; | |
612 | p->tick = 0; | |
613 | p->update_tick = 0; | |
6bfd98e7 | 614 | p->pid = 0; |
fd41ad98 | 615 | p->pty_flag = 0; |
6bfd98e7 | 616 | p->raw_status_new = 0; |
d0d6b7c5 JB |
617 | p->status = Qrun; |
618 | p->mark = Fmake_marker (); | |
847c048e | 619 | p->kill_without_query = 0; |
d0d6b7c5 | 620 | |
6b61353c | 621 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
622 | p->adaptive_read_buffering = 0; |
623 | p->read_output_delay = 0; | |
624 | p->read_output_skip = 0; | |
6b61353c KH |
625 | #endif |
626 | ||
d0d6b7c5 JB |
627 | /* If name is already in use, modify it until it is unused. */ |
628 | ||
629 | name1 = name; | |
630 | for (i = 1; ; i++) | |
631 | { | |
632 | tem = Fget_process (name1); | |
633 | if (NILP (tem)) break; | |
634 | sprintf (suffix, "<%d>", i); | |
635 | name1 = concat2 (name, build_string (suffix)); | |
636 | } | |
637 | name = name1; | |
638 | p->name = name; | |
23d6bb9c | 639 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
640 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
641 | return val; | |
642 | } | |
643 | ||
ff6daed3 | 644 | static void |
d0d6b7c5 JB |
645 | remove_process (proc) |
646 | register Lisp_Object proc; | |
647 | { | |
648 | register Lisp_Object pair; | |
649 | ||
650 | pair = Frassq (proc, Vprocess_alist); | |
651 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
652 | |
653 | deactivate_process (proc); | |
654 | } | |
03f04413 KH |
655 | |
656 | /* Setup coding systems of PROCESS. */ | |
657 | ||
658 | void | |
659 | setup_process_coding_systems (process) | |
660 | Lisp_Object process; | |
661 | { | |
662 | struct Lisp_Process *p = XPROCESS (process); | |
60f0fb11 SM |
663 | int inch = p->infd; |
664 | int outch = p->outfd; | |
8f924df7 | 665 | Lisp_Object coding_system; |
03f04413 | 666 | |
20f1ef2e KH |
667 | if (inch < 0 || outch < 0) |
668 | return; | |
669 | ||
03f04413 KH |
670 | if (!proc_decode_coding_system[inch]) |
671 | proc_decode_coding_system[inch] | |
672 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
8f924df7 | 673 | coding_system = p->decode_coding_system; |
03f04413 | 674 | if (! NILP (p->filter)) |
5431bd6a | 675 | ; |
03f04413 KH |
676 | else if (BUFFERP (p->buffer)) |
677 | { | |
678 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
8f924df7 | 679 | coding_system = raw_text_coding_system (coding_system); |
03f04413 | 680 | } |
8f924df7 | 681 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); |
03f04413 KH |
682 | |
683 | if (!proc_encode_coding_system[outch]) | |
684 | proc_encode_coding_system[outch] | |
685 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
686 | setup_coding_system (p->encode_coding_system, | |
687 | proc_encode_coding_system[outch]); | |
688 | } | |
d0d6b7c5 JB |
689 | \f |
690 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
691 | doc: /* Return t if OBJECT is a process. */) |
692 | (object) | |
4ee3e309 | 693 | Lisp_Object object; |
d0d6b7c5 | 694 | { |
4ee3e309 | 695 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
696 | } |
697 | ||
698 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
699 | doc: /* Return the process named NAME, or nil if there is none. */) |
700 | (name) | |
d0d6b7c5 JB |
701 | register Lisp_Object name; |
702 | { | |
bcd69aea | 703 | if (PROCESSP (name)) |
d0d6b7c5 | 704 | return name; |
b7826503 | 705 | CHECK_STRING (name); |
d0d6b7c5 JB |
706 | return Fcdr (Fassoc (name, Vprocess_alist)); |
707 | } | |
708 | ||
709 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
710 | doc: /* Return the (or a) process associated with BUFFER. |
711 | BUFFER may be a buffer or the name of one. */) | |
712 | (buffer) | |
4ee3e309 | 713 | register Lisp_Object buffer; |
d0d6b7c5 JB |
714 | { |
715 | register Lisp_Object buf, tail, proc; | |
716 | ||
4ee3e309 EN |
717 | if (NILP (buffer)) return Qnil; |
718 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
719 | if (NILP (buf)) return Qnil; |
720 | ||
99784d63 | 721 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 722 | { |
99784d63 | 723 | proc = Fcdr (XCAR (tail)); |
bcd69aea | 724 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
725 | return proc; |
726 | } | |
727 | return Qnil; | |
728 | } | |
729 | ||
ebb9e16f JB |
730 | /* This is how commands for the user decode process arguments. It |
731 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
732 | Buffers denote the first process in the buffer, and nil denotes the | |
733 | current buffer. */ | |
d0d6b7c5 | 734 | |
77b221b1 | 735 | static Lisp_Object |
d0d6b7c5 JB |
736 | get_process (name) |
737 | register Lisp_Object name; | |
738 | { | |
1619761d KH |
739 | register Lisp_Object proc, obj; |
740 | if (STRINGP (name)) | |
741 | { | |
742 | obj = Fget_process (name); | |
743 | if (NILP (obj)) | |
744 | obj = Fget_buffer (name); | |
745 | if (NILP (obj)) | |
d5db4077 | 746 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
747 | } |
748 | else if (NILP (name)) | |
749 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 750 | else |
1619761d KH |
751 | obj = name; |
752 | ||
753 | /* Now obj should be either a buffer object or a process object. | |
754 | */ | |
755 | if (BUFFERP (obj)) | |
d0d6b7c5 | 756 | { |
1619761d | 757 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 758 | if (NILP (proc)) |
d5db4077 | 759 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 760 | } |
d0d6b7c5 | 761 | else |
1619761d | 762 | { |
b7826503 | 763 | CHECK_PROCESS (obj); |
1619761d KH |
764 | proc = obj; |
765 | } | |
766 | return proc; | |
d0d6b7c5 JB |
767 | } |
768 | ||
a5cfdda8 KS |
769 | |
770 | #ifdef SIGCHLD | |
771 | /* Fdelete_process promises to immediately forget about the process, but in | |
772 | reality, Emacs needs to remember those processes until they have been | |
773 | treated by sigchld_handler; otherwise this handler would consider the | |
774 | process as being synchronous and say that the synchronous process is | |
775 | dead. */ | |
776 | static Lisp_Object deleted_pid_list; | |
777 | #endif | |
778 | ||
d0d6b7c5 | 779 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
780 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
781 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
782 | nil, indicating the current buffer's process. */) | |
783 | (process) | |
4ee3e309 | 784 | register Lisp_Object process; |
d0d6b7c5 | 785 | { |
ff6daed3 KS |
786 | register struct Lisp_Process *p; |
787 | ||
4ee3e309 | 788 | process = get_process (process); |
ff6daed3 KS |
789 | p = XPROCESS (process); |
790 | ||
6bfd98e7 | 791 | p->raw_status_new = 0; |
d888760c | 792 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 793 | { |
ff6daed3 | 794 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
60f0fb11 | 795 | p->tick = ++process_tick; |
ff6daed3 | 796 | status_notify (p); |
e42bdf01 | 797 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 798 | } |
60f0fb11 | 799 | else if (p->infd >= 0) |
d0d6b7c5 | 800 | { |
a5cfdda8 KS |
801 | #ifdef SIGCHLD |
802 | Lisp_Object symbol; | |
d30fe779 EZ |
803 | /* Assignment to EMACS_INT stops GCC whining about limited range |
804 | of data type. */ | |
29ed4d51 | 805 | EMACS_INT pid = p->pid; |
a5cfdda8 KS |
806 | |
807 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 808 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
809 | /* GC treated elements set to nil. */ |
810 | Fdelq (Qnil, deleted_pid_list)); | |
811 | /* If the process has already signaled, remove it from the list. */ | |
812 | if (p->raw_status_new) | |
813 | update_status (p); | |
814 | symbol = p->status; | |
815 | if (CONSP (p->status)) | |
816 | symbol = XCAR (p->status); | |
817 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
29ed4d51 CY |
818 | deleted_pid_list |
819 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
820 | else |
821 | #endif | |
822 | { | |
823 | Fkill_process (process, Qnil); | |
824 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ | |
825 | p->status | |
826 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); | |
60f0fb11 | 827 | p->tick = ++process_tick; |
a5cfdda8 | 828 | status_notify (p); |
e42bdf01 | 829 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 830 | } |
d0d6b7c5 | 831 | } |
4ee3e309 | 832 | remove_process (process); |
d0d6b7c5 JB |
833 | return Qnil; |
834 | } | |
835 | \f | |
836 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
837 | doc: /* Return the status of PROCESS. |
838 | The returned value is one of the following symbols: | |
839 | run -- for a process that is running. | |
840 | stop -- for a process stopped but continuable. | |
841 | exit -- for a process that has exited. | |
842 | signal -- for a process that has got a fatal signal. | |
843 | open -- for a network stream connection that is open. | |
e690ca94 | 844 | listen -- for a network stream server that is listening. |
fdb82f93 | 845 | closed -- for a network stream connection that is closed. |
e4984112 KS |
846 | connect -- when waiting for a non-blocking connection to complete. |
847 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
848 | nil -- if arg is a process name and no such process exists. |
849 | PROCESS may be a process, a buffer, the name of a process, or | |
850 | nil, indicating the current buffer's process. */) | |
851 | (process) | |
4ee3e309 | 852 | register Lisp_Object process; |
d0d6b7c5 JB |
853 | { |
854 | register struct Lisp_Process *p; | |
855 | register Lisp_Object status; | |
343f4114 | 856 | |
4ee3e309 EN |
857 | if (STRINGP (process)) |
858 | process = Fget_process (process); | |
343f4114 | 859 | else |
4ee3e309 | 860 | process = get_process (process); |
343f4114 | 861 | |
4ee3e309 EN |
862 | if (NILP (process)) |
863 | return process; | |
343f4114 | 864 | |
4ee3e309 | 865 | p = XPROCESS (process); |
6bfd98e7 | 866 | if (p->raw_status_new) |
d0d6b7c5 JB |
867 | update_status (p); |
868 | status = p->status; | |
bcd69aea | 869 | if (CONSP (status)) |
70949dac | 870 | status = XCAR (status); |
d888760c | 871 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 872 | { |
e690ca94 | 873 | if (EQ (status, Qexit)) |
d0d6b7c5 | 874 | status = Qclosed; |
e690ca94 KS |
875 | else if (EQ (p->command, Qt)) |
876 | status = Qstop; | |
877 | else if (EQ (status, Qrun)) | |
878 | status = Qopen; | |
d0d6b7c5 JB |
879 | } |
880 | return status; | |
881 | } | |
882 | ||
883 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
884 | 1, 1, 0, | |
fdb82f93 PJ |
885 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
886 | If PROCESS has not yet exited or died, return 0. */) | |
887 | (process) | |
4ee3e309 | 888 | register Lisp_Object process; |
d0d6b7c5 | 889 | { |
b7826503 | 890 | CHECK_PROCESS (process); |
6bfd98e7 | 891 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 EN |
892 | update_status (XPROCESS (process)); |
893 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 894 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
895 | return make_number (0); |
896 | } | |
897 | ||
898 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 899 | doc: /* Return the process id of PROCESS. |
f3d9532b | 900 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 PJ |
901 | For a network connection, this value is nil. */) |
902 | (process) | |
4ee3e309 | 903 | register Lisp_Object process; |
d0d6b7c5 | 904 | { |
d30fe779 EZ |
905 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
906 | data type. */ | |
907 | EMACS_INT pid; | |
908 | ||
b7826503 | 909 | CHECK_PROCESS (process); |
d30fe779 EZ |
910 | pid = XPROCESS (process)->pid; |
911 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
912 | } |
913 | ||
914 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
915 | doc: /* Return the name of PROCESS, as a string. |
916 | This is the name of the program invoked in PROCESS, | |
917 | possibly modified to make it unique among process names. */) | |
918 | (process) | |
4ee3e309 | 919 | register Lisp_Object process; |
d0d6b7c5 | 920 | { |
b7826503 | 921 | CHECK_PROCESS (process); |
4ee3e309 | 922 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
923 | } |
924 | ||
925 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
926 | doc: /* Return the command that was executed to start PROCESS. |
927 | This is a list of strings, the first string being the program executed | |
928 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
929 | For a network or serial process, this is nil (process is running) or t |
930 | \(process is stopped). */) | |
fdb82f93 | 931 | (process) |
4ee3e309 | 932 | register Lisp_Object process; |
d0d6b7c5 | 933 | { |
b7826503 | 934 | CHECK_PROCESS (process); |
4ee3e309 | 935 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
936 | } |
937 | ||
3b9a3dfa | 938 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
939 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
940 | This is the terminal that the process itself reads and writes on, | |
941 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
942 | (process) | |
4ee3e309 | 943 | register Lisp_Object process; |
3b9a3dfa | 944 | { |
b7826503 | 945 | CHECK_PROCESS (process); |
4ee3e309 | 946 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
947 | } |
948 | ||
d0d6b7c5 | 949 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
950 | 2, 2, 0, |
951 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
952 | (process, buffer) | |
4ee3e309 | 953 | register Lisp_Object process, buffer; |
d0d6b7c5 | 954 | { |
e690ca94 KS |
955 | struct Lisp_Process *p; |
956 | ||
b7826503 | 957 | CHECK_PROCESS (process); |
d0d6b7c5 | 958 | if (!NILP (buffer)) |
b7826503 | 959 | CHECK_BUFFER (buffer); |
e690ca94 KS |
960 | p = XPROCESS (process); |
961 | p->buffer = buffer; | |
d888760c | 962 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 963 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); |
03f04413 | 964 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
965 | return buffer; |
966 | } | |
967 | ||
968 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
969 | 1, 1, 0, |
970 | doc: /* Return the buffer PROCESS is associated with. | |
971 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
972 | (process) | |
4ee3e309 | 973 | register Lisp_Object process; |
d0d6b7c5 | 974 | { |
b7826503 | 975 | CHECK_PROCESS (process); |
4ee3e309 | 976 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
977 | } |
978 | ||
979 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
980 | 1, 1, 0, |
981 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
982 | (process) | |
4ee3e309 | 983 | register Lisp_Object process; |
d0d6b7c5 | 984 | { |
b7826503 | 985 | CHECK_PROCESS (process); |
4ee3e309 | 986 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
987 | } |
988 | ||
989 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
990 | 2, 2, 0, |
991 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 992 | A value of t means stop accepting output from the process. |
3452df9e KS |
993 | |
994 | When a process has a filter, its buffer is not used for output. | |
995 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 996 | passed to the filter. |
3452df9e | 997 | |
fdb82f93 | 998 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
999 | The string argument is normally a multibyte string, except: |
1000 | - if the process' input coding system is no-conversion or raw-text, | |
1001 | it is a unibyte string (the non-converted input), or else | |
1002 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
1003 | string (the result of converting the decoded input multibyte | |
1004 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 1005 | (process, filter) |
4ee3e309 | 1006 | register Lisp_Object process, filter; |
d0d6b7c5 | 1007 | { |
471f86b9 | 1008 | struct Lisp_Process *p; |
177c0ea7 | 1009 | |
b7826503 | 1010 | CHECK_PROCESS (process); |
471f86b9 GM |
1011 | p = XPROCESS (process); |
1012 | ||
1013 | /* Don't signal an error if the process' input file descriptor | |
1014 | is closed. This could make debugging Lisp more difficult, | |
1015 | for example when doing something like | |
1016 | ||
1017 | (setq process (start-process ...)) | |
1018 | (debug) | |
1019 | (set-process-filter process ...) */ | |
177c0ea7 | 1020 | |
60f0fb11 | 1021 | if (p->infd >= 0) |
a69281ff | 1022 | { |
e690ca94 | 1023 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 1024 | { |
60f0fb11 SM |
1025 | FD_CLR (p->infd, &input_wait_mask); |
1026 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1027 | } |
e690ca94 | 1028 | else if (EQ (p->filter, Qt) |
d888760c GM |
1029 | /* Network or serial process not stopped: */ |
1030 | && !EQ (p->command, Qt)) | |
471f86b9 | 1031 | { |
60f0fb11 SM |
1032 | FD_SET (p->infd, &input_wait_mask); |
1033 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1034 | } |
a69281ff | 1035 | } |
177c0ea7 | 1036 | |
471f86b9 | 1037 | p->filter = filter; |
d888760c | 1038 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 1039 | p->childp = Fplist_put (p->childp, QCfilter, filter); |
03f04413 | 1040 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1041 | return filter; |
1042 | } | |
1043 | ||
1044 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1045 | 1, 1, 0, |
1046 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1047 | See `set-process-filter' for more info on filter functions. */) | |
1048 | (process) | |
4ee3e309 | 1049 | register Lisp_Object process; |
d0d6b7c5 | 1050 | { |
b7826503 | 1051 | CHECK_PROCESS (process); |
4ee3e309 | 1052 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1053 | } |
1054 | ||
1055 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1056 | 2, 2, 0, |
1057 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1058 | The sentinel is called as a function when the process changes state. | |
1059 | It gets two arguments: the process, and a string describing the change. */) | |
1060 | (process, sentinel) | |
4ee3e309 | 1061 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 1062 | { |
6b61353c KH |
1063 | struct Lisp_Process *p; |
1064 | ||
b7826503 | 1065 | CHECK_PROCESS (process); |
6b61353c KH |
1066 | p = XPROCESS (process); |
1067 | ||
1068 | p->sentinel = sentinel; | |
d888760c | 1069 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6b61353c | 1070 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); |
d0d6b7c5 JB |
1071 | return sentinel; |
1072 | } | |
1073 | ||
1074 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1075 | 1, 1, 0, |
1076 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1077 | See `set-process-sentinel' for more info on sentinels. */) | |
1078 | (process) | |
4ee3e309 | 1079 | register Lisp_Object process; |
d0d6b7c5 | 1080 | { |
b7826503 | 1081 | CHECK_PROCESS (process); |
4ee3e309 | 1082 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1083 | } |
1084 | ||
396df322 | 1085 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1086 | Sset_process_window_size, 3, 3, 0, |
1087 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
1088 | (process, height, width) | |
4ee3e309 | 1089 | register Lisp_Object process, height, width; |
396df322 | 1090 | { |
b7826503 PJ |
1091 | CHECK_PROCESS (process); |
1092 | CHECK_NATNUM (height); | |
1093 | CHECK_NATNUM (width); | |
177c0ea7 | 1094 | |
60f0fb11 SM |
1095 | if (XPROCESS (process)->infd < 0 |
1096 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1097 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1098 | return Qnil; |
1099 | else | |
1100 | return Qt; | |
1101 | } | |
1102 | ||
52a1b894 | 1103 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1104 | Fset_process_inherit_coding_system_flag, |
1105 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1106 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1107 | If the second argument FLAG is non-nil, then the variable | |
1108 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1109 | will be bound to the value of the coding system used to decode | |
1110 | the process output. | |
1111 | ||
1112 | This is useful when the coding system specified for the process buffer | |
1113 | leaves either the character code conversion or the end-of-line conversion | |
1114 | unspecified, or if the coding system used to decode the process output | |
1115 | is more appropriate for saving the process buffer. | |
1116 | ||
1117 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1118 | starting the process is an alternative way of setting the inherit flag | |
1119 | for the process which will run. */) | |
1120 | (process, flag) | |
52a1b894 EZ |
1121 | register Lisp_Object process, flag; |
1122 | { | |
b7826503 | 1123 | CHECK_PROCESS (process); |
60f0fb11 | 1124 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1125 | return flag; |
1126 | } | |
1127 | ||
1128 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1129 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1130 | 1, 1, 0, | |
1131 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1132 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1133 | associated with PROCESS will inherit the coding system used to decode | |
1134 | the process output. */) | |
1135 | (process) | |
52a1b894 EZ |
1136 | register Lisp_Object process; |
1137 | { | |
b7826503 | 1138 | CHECK_PROCESS (process); |
60f0fb11 | 1139 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; |
52a1b894 EZ |
1140 | } |
1141 | ||
e690ca94 KS |
1142 | DEFUN ("set-process-query-on-exit-flag", |
1143 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1144 | 2, 2, 0, | |
1145 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1146 | If the second argument FLAG is non-nil, Emacs will query the user before |
10be7e0d | 1147 | exiting or killing a buffer if PROCESS is running. */) |
e690ca94 KS |
1148 | (process, flag) |
1149 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1150 | { |
b7826503 | 1151 | CHECK_PROCESS (process); |
60f0fb11 | 1152 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1153 | return flag; |
d0d6b7c5 | 1154 | } |
312c9964 | 1155 | |
e690ca94 KS |
1156 | DEFUN ("process-query-on-exit-flag", |
1157 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1158 | 1, 1, 0, |
f3d9532b | 1159 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
fdb82f93 | 1160 | (process) |
de282a05 RS |
1161 | register Lisp_Object process; |
1162 | { | |
b7826503 | 1163 | CHECK_PROCESS (process); |
60f0fb11 | 1164 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1165 | } |
1166 | ||
1167 | #ifdef DATAGRAM_SOCKETS | |
1168 | Lisp_Object Fprocess_datagram_address (); | |
1169 | #endif | |
1170 | ||
1171 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1172 | 1, 2, 0, | |
1173 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1174 | For a network or serial connection, the value depends on the optional |
1175 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1176 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1177 | connection. If KEY is t, the complete contact information for the | |
1178 | connection is returned, else the specific value for the keyword KEY is | |
1179 | returned. See `make-network-process' or `make-serial-process' for a | |
1180 | list of keywords. */) | |
e690ca94 KS |
1181 | (process, key) |
1182 | register Lisp_Object process, key; | |
1183 | { | |
1184 | Lisp_Object contact; | |
1185 | ||
1186 | CHECK_PROCESS (process); | |
1187 | contact = XPROCESS (process)->childp; | |
1188 | ||
1189 | #ifdef DATAGRAM_SOCKETS | |
1190 | if (DATAGRAM_CONN_P (process) | |
1191 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1192 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1193 | Fprocess_datagram_address (process)); |
1194 | #endif | |
1195 | ||
d888760c | 1196 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1197 | return contact; |
d888760c | 1198 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1199 | return Fcons (Fplist_get (contact, QChost), |
1200 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1201 | if (NILP (key) && SERIALCONN_P (process)) |
1202 | return Fcons (Fplist_get (contact, QCport), | |
1203 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1204 | return Fplist_get (contact, key); |
de282a05 RS |
1205 | } |
1206 | ||
faa7db08 KS |
1207 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1208 | 1, 1, 0, | |
1209 | doc: /* Return the plist of PROCESS. */) | |
1210 | (process) | |
1211 | register Lisp_Object process; | |
365aee82 | 1212 | { |
ac4a7584 | 1213 | CHECK_PROCESS (process); |
faa7db08 | 1214 | return XPROCESS (process)->plist; |
ac4a7584 | 1215 | } |
365aee82 | 1216 | |
faa7db08 KS |
1217 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1218 | 2, 2, 0, | |
26a086c6 | 1219 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1220 | (process, plist) |
1221 | register Lisp_Object process, plist; | |
ac4a7584 | 1222 | { |
365aee82 | 1223 | CHECK_PROCESS (process); |
faa7db08 | 1224 | CHECK_LIST (plist); |
365aee82 | 1225 | |
faa7db08 | 1226 | XPROCESS (process)->plist = plist; |
26a086c6 | 1227 | return plist; |
365aee82 KS |
1228 | } |
1229 | ||
312c9964 RS |
1230 | #if 0 /* Turned off because we don't currently record this info |
1231 | in the process. Perhaps add it. */ | |
1232 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1233 | doc: /* Return the connection type of PROCESS. |
1234 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1235 | a socket connection. */) | |
1236 | (process) | |
312c9964 RS |
1237 | Lisp_Object process; |
1238 | { | |
1239 | return XPROCESS (process)->type; | |
1240 | } | |
1241 | #endif | |
2a7bb882 | 1242 | |
d888760c GM |
1243 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1244 | doc: /* Return the connection type of PROCESS. | |
1245 | The value is either the symbol `real', `network', or `serial'. | |
1246 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1247 | nil, indicating the current buffer's process. */) | |
1248 | (process) | |
1249 | Lisp_Object process; | |
1250 | { | |
1251 | Lisp_Object proc; | |
1252 | proc = get_process (process); | |
1253 | return XPROCESS (proc)->type; | |
1254 | } | |
991234f0 KS |
1255 | |
1256 | #ifdef HAVE_SOCKETS | |
1257 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1258 | 1, 2, 0, |
991234f0 | 1259 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1260 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1261 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1262 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1263 | number in the string, even when present in ADDRESS. |
1264 | Returns nil if format of ADDRESS is invalid. */) | |
0dccee41 KS |
1265 | (address, omit_port) |
1266 | Lisp_Object address, omit_port; | |
991234f0 | 1267 | { |
991234f0 KS |
1268 | if (NILP (address)) |
1269 | return Qnil; | |
1270 | ||
1271 | if (STRINGP (address)) /* AF_LOCAL */ | |
1272 | return address; | |
1273 | ||
e1652a86 | 1274 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1275 | { |
1276 | register struct Lisp_Vector *p = XVECTOR (address); | |
ded83665 | 1277 | Lisp_Object args[10]; |
0dccee41 | 1278 | int nargs, i; |
991234f0 | 1279 | |
e1652a86 | 1280 | if (p->size == 4 || (p->size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1281 | { |
1282 | args[0] = build_string ("%d.%d.%d.%d"); | |
1283 | nargs = 4; | |
1284 | } | |
1285 | else if (p->size == 5) | |
1286 | { | |
1287 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1288 | nargs = 5; | |
1289 | } | |
e1652a86 KS |
1290 | else if (p->size == 8 || (p->size == 9 && !NILP (omit_port))) |
1291 | { | |
1292 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1293 | nargs = 8; | |
1294 | } | |
1295 | else if (p->size == 9) | |
1296 | { | |
1297 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1298 | nargs = 9; | |
1299 | } | |
0dccee41 | 1300 | else |
991234f0 KS |
1301 | return Qnil; |
1302 | ||
0dccee41 | 1303 | for (i = 0; i < nargs; i++) |
cbf23adb JB |
1304 | { |
1305 | EMACS_INT element = XINT (p->contents[i]); | |
1306 | ||
1307 | if (element < 0 || element > 65535) | |
1308 | return Qnil; | |
1309 | ||
1310 | if (nargs <= 5 /* IPv4 */ | |
1311 | && i < 4 /* host, not port */ | |
1312 | && element > 255) | |
1313 | return Qnil; | |
1314 | ||
1315 | args[i+1] = p->contents[i]; | |
1316 | } | |
1317 | ||
0dccee41 | 1318 | return Fformat (nargs+1, args); |
991234f0 KS |
1319 | } |
1320 | ||
1321 | if (CONSP (address)) | |
1322 | { | |
1323 | Lisp_Object args[2]; | |
1324 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1325 | args[1] = Fcar (address); |
991234f0 | 1326 | return Fformat (2, args); |
991234f0 KS |
1327 | } |
1328 | ||
1329 | return Qnil; | |
1330 | } | |
1331 | #endif | |
d0d6b7c5 | 1332 | \f |
ff6daed3 | 1333 | static Lisp_Object |
e690ca94 KS |
1334 | list_processes_1 (query_only) |
1335 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1336 | { |
1337 | register Lisp_Object tail, tem; | |
1338 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1339 | register struct Lisp_Process *p; |
e690ca94 KS |
1340 | char tembuf[300]; |
1341 | int w_proc, w_buffer, w_tty; | |
1eed3bdc | 1342 | int exited = 0; |
e690ca94 KS |
1343 | Lisp_Object i_status, i_buffer, i_tty, i_command; |
1344 | ||
1345 | w_proc = 4; /* Proc */ | |
1346 | w_buffer = 6; /* Buffer */ | |
1347 | w_tty = 0; /* Omit if no ttys */ | |
1348 | ||
99784d63 | 1349 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
e690ca94 KS |
1350 | { |
1351 | int i; | |
1352 | ||
99784d63 | 1353 | proc = Fcdr (XCAR (tail)); |
e690ca94 | 1354 | p = XPROCESS (proc); |
d888760c | 1355 | if (NILP (p->type)) |
e690ca94 | 1356 | continue; |
60f0fb11 | 1357 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 KS |
1358 | continue; |
1359 | if (STRINGP (p->name) | |
d5db4077 | 1360 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1361 | w_proc = i; |
1362 | if (!NILP (p->buffer)) | |
1363 | { | |
e69c4cae SM |
1364 | if (NILP (XBUFFER (p->buffer)->name)) |
1365 | { | |
1366 | if (w_buffer < 8) | |
1367 | w_buffer = 8; /* (Killed) */ | |
1368 | } | |
d5db4077 | 1369 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1370 | w_buffer = i; |
1371 | } | |
1372 | if (STRINGP (p->tty_name) | |
d5db4077 | 1373 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1374 | w_tty = i; |
1375 | } | |
1376 | ||
1377 | XSETFASTINT (i_status, w_proc + 1); | |
1378 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1379 | if (w_tty) | |
1380 | { | |
1381 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
d3c0009d AS |
1382 | XSETFASTINT (i_command, XFASTINT (i_tty) + w_tty + 1); |
1383 | } | |
1384 | else | |
1385 | { | |
e690ca94 KS |
1386 | i_tty = Qnil; |
1387 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1388 | } | |
d0d6b7c5 | 1389 | |
22719df2 | 1390 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1391 | |
1392 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1393 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1394 | |
1395 | current_buffer->truncate_lines = Qt; | |
1396 | ||
e690ca94 KS |
1397 | write_string ("Proc", -1); |
1398 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1399 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1400 | if (!NILP (i_tty)) | |
1401 | { | |
1402 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1403 | } | |
1404 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1405 | write_string ("\n", -1); | |
1406 | ||
1407 | write_string ("----", -1); | |
1408 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1409 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1410 | if (!NILP (i_tty)) | |
1411 | { | |
1412 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1413 | } | |
1414 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1415 | write_string ("\n", -1); | |
d0d6b7c5 | 1416 | |
99784d63 | 1417 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 JB |
1418 | { |
1419 | Lisp_Object symbol; | |
1420 | ||
99784d63 | 1421 | proc = Fcdr (XCAR (tail)); |
d0d6b7c5 | 1422 | p = XPROCESS (proc); |
d888760c | 1423 | if (NILP (p->type)) |
d0d6b7c5 | 1424 | continue; |
60f0fb11 | 1425 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 | 1426 | continue; |
d0d6b7c5 JB |
1427 | |
1428 | Finsert (1, &p->name); | |
e690ca94 | 1429 | Findent_to (i_status, minspace); |
d0d6b7c5 | 1430 | |
6bfd98e7 | 1431 | if (p->raw_status_new) |
d0d6b7c5 JB |
1432 | update_status (p); |
1433 | symbol = p->status; | |
bcd69aea | 1434 | if (CONSP (p->status)) |
70949dac | 1435 | symbol = XCAR (p->status); |
d0d6b7c5 | 1436 | |
d0d6b7c5 JB |
1437 | if (EQ (symbol, Qsignal)) |
1438 | { | |
1439 | Lisp_Object tem; | |
1440 | tem = Fcar (Fcdr (p->status)); | |
7c2fb837 | 1441 | Fprinc (symbol, Qnil); |
d0d6b7c5 | 1442 | } |
d888760c | 1443 | else if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 1444 | { |
e690ca94 | 1445 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1446 | write_string ("closed", -1); |
e690ca94 KS |
1447 | else if (EQ (p->command, Qt)) |
1448 | write_string ("stopped", -1); | |
1449 | else if (EQ (symbol, Qrun)) | |
1450 | write_string ("open", -1); | |
d0d6b7c5 JB |
1451 | else |
1452 | Fprinc (symbol, Qnil); | |
1453 | } | |
d888760c GM |
1454 | else if (SERIALCONN1_P (p)) |
1455 | { | |
1456 | write_string ("running", -1); | |
1457 | } | |
d0d6b7c5 JB |
1458 | else |
1459 | Fprinc (symbol, Qnil); | |
1460 | ||
1461 | if (EQ (symbol, Qexit)) | |
1462 | { | |
1463 | Lisp_Object tem; | |
1464 | tem = Fcar (Fcdr (p->status)); | |
1465 | if (XFASTINT (tem)) | |
1466 | { | |
3162bafa | 1467 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1468 | write_string (tembuf, -1); |
1469 | } | |
1470 | } | |
1471 | ||
1eed3bdc KS |
1472 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) || EQ (symbol, Qclosed)) |
1473 | exited++; | |
d0d6b7c5 | 1474 | |
e690ca94 | 1475 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1476 | if (NILP (p->buffer)) |
1477 | insert_string ("(none)"); | |
1478 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1479 | insert_string ("(Killed)"); | |
1480 | else | |
1481 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1482 | ||
e690ca94 KS |
1483 | if (!NILP (i_tty)) |
1484 | { | |
1485 | Findent_to (i_tty, minspace); | |
1486 | if (STRINGP (p->tty_name)) | |
1487 | Finsert (1, &p->tty_name); | |
1488 | } | |
a9fde32e | 1489 | |
e690ca94 | 1490 | Findent_to (i_command, minspace); |
a9fde32e | 1491 | |
e690ca94 KS |
1492 | if (EQ (p->status, Qlisten)) |
1493 | { | |
1494 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1495 | if (INTEGERP (port)) | |
1496 | port = Fnumber_to_string (port); | |
991234f0 | 1497 | if (NILP (port)) |
0dccee41 | 1498 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1499 | sprintf (tembuf, "(network %s server on %s)\n", |
60f0fb11 | 1500 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1501 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1502 | insert_string (tembuf); |
1503 | } | |
1504 | else if (NETCONN1_P (p)) | |
63136da6 | 1505 | { |
e690ca94 KS |
1506 | /* For a local socket, there is no host name, |
1507 | so display service instead. */ | |
1508 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1509 | if (!STRINGP (host)) | |
1510 | { | |
1511 | host = Fplist_get (p->childp, QCservice); | |
1512 | if (INTEGERP (host)) | |
1513 | host = Fnumber_to_string (host); | |
1514 | } | |
991234f0 | 1515 | if (NILP (host)) |
0dccee41 | 1516 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1517 | sprintf (tembuf, "(network %s connection to %s)\n", |
60f0fb11 | 1518 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1519 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 | 1520 | insert_string (tembuf); |
63136da6 | 1521 | } |
d888760c GM |
1522 | else if (SERIALCONN1_P (p)) |
1523 | { | |
1524 | Lisp_Object port = Fplist_get (p->childp, QCport); | |
1525 | Lisp_Object speed = Fplist_get (p->childp, QCspeed); | |
1526 | insert_string ("(serial port "); | |
1527 | if (STRINGP (port)) | |
1528 | insert_string (SDATA (port)); | |
1529 | else | |
1530 | insert_string ("?"); | |
1531 | if (INTEGERP (speed)) | |
1532 | { | |
fa24b114 | 1533 | sprintf (tembuf, " at %ld b/s", (long) XINT (speed)); |
d888760c GM |
1534 | insert_string (tembuf); |
1535 | } | |
1536 | insert_string (")\n"); | |
1537 | } | |
177c0ea7 | 1538 | else |
d0d6b7c5 JB |
1539 | { |
1540 | tem = p->command; | |
1541 | while (1) | |
1542 | { | |
1543 | tem1 = Fcar (tem); | |
850d0752 NR |
1544 | if (NILP (tem1)) |
1545 | break; | |
d0d6b7c5 JB |
1546 | Finsert (1, &tem1); |
1547 | tem = Fcdr (tem); | |
1548 | if (NILP (tem)) | |
1549 | break; | |
1550 | insert_string (" "); | |
1551 | } | |
1552 | insert_string ("\n"); | |
1553 | } | |
1554 | } | |
1eed3bdc | 1555 | if (exited) |
e42bdf01 CY |
1556 | { |
1557 | status_notify (NULL); | |
1558 | redisplay_preserve_echo_area (13); | |
1559 | } | |
d0d6b7c5 JB |
1560 | return Qnil; |
1561 | } | |
1562 | ||
e690ca94 | 1563 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1564 | doc: /* Display a list of all processes. |
e690ca94 KS |
1565 | If optional argument QUERY-ONLY is non-nil, only processes with |
1566 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1567 | Any process listed as exited or signaled is actually eliminated |
1568 | after the listing is made. */) | |
e690ca94 KS |
1569 | (query_only) |
1570 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1571 | { |
1572 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1573 | list_processes_1, query_only); |
d0d6b7c5 JB |
1574 | return Qnil; |
1575 | } | |
1576 | ||
1577 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1578 | doc: /* Return a list of all processes. */) |
1579 | () | |
d0d6b7c5 JB |
1580 | { |
1581 | return Fmapcar (Qcdr, Vprocess_alist); | |
1582 | } | |
1583 | \f | |
b0310da4 JB |
1584 | /* Starting asynchronous inferior processes. */ |
1585 | ||
1586 | static Lisp_Object start_process_unwind (); | |
1587 | ||
d0d6b7c5 | 1588 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1589 | doc: /* Start a program in a subprocess. Return the process object for it. |
1590 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1591 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1592 | |
1593 | Process output (both standard output and standard error streams) goes | |
1594 | at end of BUFFER, unless you specify an output stream or filter | |
1595 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1596 | this process is not associated with any buffer. |
1597 | ||
850d0752 NR |
1598 | PROGRAM is the program file name. It is searched for in PATH. If |
1599 | nil, just associate a pty with the buffer. Remaining arguments are | |
1600 | strings to give program as arguments. | |
320aebc9 | 1601 | |
4b6c5eee EZ |
1602 | If you want to separate standard output from standard error, invoke |
1603 | the command through a shell and redirect one of them using the shell | |
1604 | syntax. | |
320aebc9 | 1605 | |
3ecdf100 | 1606 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1607 | (nargs, args) |
d0d6b7c5 JB |
1608 | int nargs; |
1609 | register Lisp_Object *args; | |
1610 | { | |
1e30af70 | 1611 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1612 | register unsigned char **new_argv; |
d0d6b7c5 | 1613 | register int i; |
aed13378 | 1614 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1615 | |
1616 | buffer = args[1]; | |
1617 | if (!NILP (buffer)) | |
1618 | buffer = Fget_buffer_create (buffer); | |
1619 | ||
1e30af70 JB |
1620 | /* Make sure that the child will be able to chdir to the current |
1621 | buffer's current directory, or its unhandled equivalent. We | |
1622 | can't just have the child check for an error when it does the | |
1623 | chdir, since it's in a vfork. | |
1624 | ||
1625 | We have to GCPRO around this because Fexpand_file_name and | |
1626 | Funhandled_file_name_directory might call a file name handling | |
1627 | function. The argument list is protected by the caller, so all | |
1628 | we really have to worry about is buffer. */ | |
1629 | { | |
1630 | struct gcpro gcpro1, gcpro2; | |
1631 | ||
1632 | current_dir = current_buffer->directory; | |
1633 | ||
1634 | GCPRO2 (buffer, current_dir); | |
1635 | ||
ca319910 SM |
1636 | current_dir = Funhandled_file_name_directory (current_dir); |
1637 | if (NILP (current_dir)) | |
1638 | /* If the file name handler says that current_dir is unreachable, use | |
1639 | a sensible default. */ | |
1640 | current_dir = build_string ("~/"); | |
1641 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1642 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1643 | report_file_error ("Setting current directory", | |
1644 | Fcons (current_buffer->directory, Qnil)); | |
1645 | ||
1646 | UNGCPRO; | |
1647 | } | |
1648 | ||
d0d6b7c5 | 1649 | name = args[0]; |
b7826503 | 1650 | CHECK_STRING (name); |
d0d6b7c5 JB |
1651 | |
1652 | program = args[2]; | |
1653 | ||
850d0752 NR |
1654 | if (!NILP (program)) |
1655 | CHECK_STRING (program); | |
d0d6b7c5 | 1656 | |
d0d6b7c5 | 1657 | proc = make_process (name); |
b0310da4 JB |
1658 | /* If an error occurs and we can't start the process, we want to |
1659 | remove it from the process list. This means that each error | |
1660 | check in create_process doesn't need to call remove_process | |
1661 | itself; it's all taken care of here. */ | |
1662 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1663 | |
1664 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1665 | XPROCESS (proc)->plist = Qnil; |
d888760c | 1666 | XPROCESS (proc)->type = Qreal; |
d0d6b7c5 JB |
1667 | XPROCESS (proc)->buffer = buffer; |
1668 | XPROCESS (proc)->sentinel = Qnil; | |
1669 | XPROCESS (proc)->filter = Qnil; | |
1670 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); | |
1671 | ||
6b61353c | 1672 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1673 | XPROCESS (proc)->adaptive_read_buffering |
1674 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1675 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1676 | #endif |
1677 | ||
7af71e17 | 1678 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1679 | if (BUFFERP (buffer)) |
d8a2934e RS |
1680 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1681 | BUF_ZV (XBUFFER (buffer)), | |
1682 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1683 | |
67918941 | 1684 | { |
d5d4ae71 KH |
1685 | /* Decide coding systems for communicating with the process. Here |
1686 | we don't setup the structure coding_system nor pay attention to | |
1687 | unibyte mode. They are done in create_process. */ | |
1688 | ||
67918941 RS |
1689 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1690 | Lisp_Object coding_systems = Qt; | |
1691 | Lisp_Object val, *args2; | |
a4a37e65 | 1692 | struct gcpro gcpro1, gcpro2; |
67918941 | 1693 | |
d5d4ae71 KH |
1694 | val = Vcoding_system_for_read; |
1695 | if (NILP (val)) | |
67918941 RS |
1696 | { |
1697 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1698 | args2[0] = Qstart_process; | |
1699 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1700 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1701 | if (!NILP (program)) |
1702 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1703 | UNGCPRO; |
1704 | if (CONSP (coding_systems)) | |
70949dac | 1705 | val = XCAR (coding_systems); |
67918941 | 1706 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1707 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1708 | } |
1709 | XPROCESS (proc)->decode_coding_system = val; | |
1710 | ||
d5d4ae71 KH |
1711 | val = Vcoding_system_for_write; |
1712 | if (NILP (val)) | |
67918941 RS |
1713 | { |
1714 | if (EQ (coding_systems, Qt)) | |
1715 | { | |
1716 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1717 | args2[0] = Qstart_process; | |
1718 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1719 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1720 | if (!NILP (program)) |
1721 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1722 | UNGCPRO; |
1723 | } | |
1724 | if (CONSP (coding_systems)) | |
70949dac | 1725 | val = XCDR (coding_systems); |
67918941 | 1726 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1727 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1728 | } |
1729 | XPROCESS (proc)->encode_coding_system = val; | |
1730 | } | |
0fa1789e | 1731 | |
a4a37e65 | 1732 | |
850d0752 NR |
1733 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
1734 | XPROCESS (proc)->decoding_carryover = 0; | |
1735 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); | |
ed30cf85 | 1736 | |
850d0752 NR |
1737 | XPROCESS (proc)->inherit_coding_system_flag |
1738 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1739 | |
850d0752 NR |
1740 | if (!NILP (program)) |
1741 | { | |
1742 | /* If program file name is not absolute, search our path for it. | |
1743 | Put the name we will really use in TEM. */ | |
1744 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1745 | && !(SCHARS (program) > 1 | |
1746 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1747 | { | |
1748 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1749 | ||
1750 | tem = Qnil; | |
1751 | GCPRO4 (name, program, buffer, current_dir); | |
1752 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1753 | UNGCPRO; | |
1754 | if (NILP (tem)) | |
1755 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1756 | tem = Fexpand_file_name (tem, Qnil); | |
1757 | } | |
1758 | else | |
1759 | { | |
1760 | if (!NILP (Ffile_directory_p (program))) | |
1761 | error ("Specified program for new process is a directory"); | |
1762 | tem = program; | |
1763 | } | |
ed30cf85 | 1764 | |
850d0752 NR |
1765 | /* If program file name starts with /: for quoting a magic name, |
1766 | discard that. */ | |
1767 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1768 | && SREF (tem, 1) == ':') | |
1769 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1770 | |
77bf07e1 | 1771 | { |
850d0752 NR |
1772 | struct gcpro gcpro1; |
1773 | GCPRO1 (tem); | |
a4a37e65 | 1774 | |
850d0752 NR |
1775 | /* Encode the file name and put it in NEW_ARGV. |
1776 | That's where the child will use it to execute the program. */ | |
1777 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1778 | |
850d0752 NR |
1779 | /* Here we encode arguments by the coding system used for sending |
1780 | data to the process. We don't support using different coding | |
1781 | systems for encoding arguments and for encoding data sent to the | |
1782 | process. */ | |
77bf07e1 | 1783 | |
850d0752 NR |
1784 | for (i = 3; i < nargs; i++) |
1785 | { | |
1786 | tem = Fcons (args[i], tem); | |
1787 | CHECK_STRING (XCAR (tem)); | |
1788 | if (STRING_MULTIBYTE (XCAR (tem))) | |
1789 | XSETCAR (tem, | |
1790 | code_convert_string_norecord | |
1791 | (XCAR (tem), XPROCESS (proc)->encode_coding_system, 1)); | |
1792 | } | |
a4a37e65 | 1793 | |
850d0752 NR |
1794 | UNGCPRO; |
1795 | } | |
0fa1789e | 1796 | |
850d0752 NR |
1797 | /* Now that everything is encoded we can collect the strings into |
1798 | NEW_ARGV. */ | |
1799 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1800 | new_argv[nargs - 2] = 0; | |
52a1b894 | 1801 | |
850d0752 NR |
1802 | for (i = nargs - 3; i >= 0; i--) |
1803 | { | |
1804 | new_argv[i] = SDATA (XCAR (tem)); | |
1805 | tem = XCDR (tem); | |
1806 | } | |
1807 | ||
1808 | create_process (proc, (char **) new_argv, current_dir); | |
1809 | } | |
1810 | else | |
1811 | create_pty (proc); | |
d0d6b7c5 | 1812 | |
b0310da4 | 1813 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1814 | } |
1815 | ||
b0310da4 | 1816 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1817 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1818 | an error and the process wasn't started successfully, so we should |
1819 | remove it from the process list. */ | |
1820 | static Lisp_Object | |
1821 | start_process_unwind (proc) | |
1822 | Lisp_Object proc; | |
1823 | { | |
bcd69aea | 1824 | if (!PROCESSP (proc)) |
b0310da4 JB |
1825 | abort (); |
1826 | ||
1827 | /* Was PROC started successfully? */ | |
850d0752 | 1828 | if (XPROCESS (proc)->pid == -1) |
b0310da4 JB |
1829 | remove_process (proc); |
1830 | ||
1831 | return Qnil; | |
1832 | } | |
1833 | ||
ff6daed3 | 1834 | static void |
30904ab7 GM |
1835 | create_process_1 (timer) |
1836 | struct atimer *timer; | |
d0d6b7c5 | 1837 | { |
30904ab7 | 1838 | /* Nothing to do. */ |
d0d6b7c5 JB |
1839 | } |
1840 | ||
30904ab7 | 1841 | |
d0d6b7c5 JB |
1842 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1843 | #ifdef USG | |
1844 | #ifdef SIGCHLD | |
1845 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1846 | ||
1847 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1848 | int sigchld_deferred; | |
1849 | ||
1850 | SIGTYPE | |
1851 | create_process_sigchld () | |
1852 | { | |
1853 | signal (SIGCHLD, create_process_sigchld); | |
1854 | ||
1855 | sigchld_deferred = 1; | |
1856 | } | |
1857 | #endif | |
1858 | #endif | |
1859 | #endif | |
1860 | ||
6b53bb85 | 1861 | void |
1e30af70 | 1862 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1863 | Lisp_Object process; |
1864 | char **new_argv; | |
1e30af70 | 1865 | Lisp_Object current_dir; |
d0d6b7c5 | 1866 | { |
29ed4d51 CY |
1867 | int inchannel, outchannel; |
1868 | pid_t pid; | |
d0d6b7c5 | 1869 | int sv[2]; |
2c4df143 YM |
1870 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1871 | int wait_child_setup[2]; | |
1872 | #endif | |
0dc70c33 KH |
1873 | #ifdef POSIX_SIGNALS |
1874 | sigset_t procmask; | |
1875 | sigset_t blocked; | |
1876 | struct sigaction sigint_action; | |
1877 | struct sigaction sigquit_action; | |
1878 | #ifdef AIX | |
1879 | struct sigaction sighup_action; | |
1880 | #endif | |
1881 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1882 | #if 0 |
d0d6b7c5 JB |
1883 | #ifdef SIGCHLD |
1884 | SIGTYPE (*sigchld)(); | |
1885 | #endif | |
41d03b9a | 1886 | #endif /* 0 */ |
0dc70c33 | 1887 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1888 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1889 | volatile int forkin, forkout; | |
1890 | volatile int pty_flag = 0; | |
3ec68006 | 1891 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1892 | extern char **environ; |
3ec68006 | 1893 | #endif |
d0d6b7c5 | 1894 | |
d0d6b7c5 JB |
1895 | inchannel = outchannel = -1; |
1896 | ||
1897 | #ifdef HAVE_PTYS | |
fe45da4e | 1898 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1899 | outchannel = inchannel = allocate_pty (); |
1900 | ||
d0d6b7c5 JB |
1901 | if (inchannel >= 0) |
1902 | { | |
2af70a0c RS |
1903 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1904 | /* On most USG systems it does not work to open the pty's tty here, | |
1905 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1906 | #ifdef O_NOCTTY |
1907 | /* Don't let this terminal become our controlling terminal | |
1908 | (in case we don't have one). */ | |
68c45bf0 | 1909 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1910 | #else |
68c45bf0 | 1911 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1912 | #endif |
1913 | if (forkin < 0) | |
1914 | report_file_error ("Opening pty", Qnil); | |
1915 | #else | |
1916 | forkin = forkout = -1; | |
2af70a0c | 1917 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1918 | pty_flag = 1; |
1919 | } | |
1920 | else | |
1921 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1922 | { |
fc14013c KH |
1923 | int tem; |
1924 | tem = pipe (sv); | |
1925 | if (tem < 0) | |
1926 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1927 | inchannel = sv[0]; |
1928 | forkout = sv[1]; | |
fc14013c KH |
1929 | tem = pipe (sv); |
1930 | if (tem < 0) | |
1931 | { | |
68c45bf0 PE |
1932 | emacs_close (inchannel); |
1933 | emacs_close (forkout); | |
fc14013c KH |
1934 | report_file_error ("Creating pipe", Qnil); |
1935 | } | |
d0d6b7c5 JB |
1936 | outchannel = sv[1]; |
1937 | forkin = sv[0]; | |
1938 | } | |
d0d6b7c5 | 1939 | |
2c4df143 YM |
1940 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1941 | { | |
1942 | int tem; | |
1943 | ||
1944 | tem = pipe (wait_child_setup); | |
1945 | if (tem < 0) | |
1946 | report_file_error ("Creating pipe", Qnil); | |
1947 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1948 | if (tem >= 0) | |
1949 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1950 | if (tem < 0) | |
1951 | { | |
1952 | emacs_close (wait_child_setup[0]); | |
1953 | emacs_close (wait_child_setup[1]); | |
1954 | report_file_error ("Setting file descriptor flags", Qnil); | |
1955 | } | |
1956 | } | |
1957 | #endif | |
1958 | ||
d0d6b7c5 JB |
1959 | #if 0 |
1960 | /* Replaced by close_process_descs */ | |
1961 | set_exclusive_use (inchannel); | |
1962 | set_exclusive_use (outchannel); | |
1963 | #endif | |
1964 | ||
d0d6b7c5 JB |
1965 | #ifdef O_NONBLOCK |
1966 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1967 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1968 | #else |
1969 | #ifdef O_NDELAY | |
1970 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1971 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1972 | #endif |
1973 | #endif | |
1974 | ||
1975 | /* Record this as an active process, with its channels. | |
1976 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1977 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1978 | XPROCESS (process)->infd = inchannel; |
1979 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1980 | |
1981 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1982 | It was only used for getting the foreground tty process, so now | |
1983 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1984 | more portable (see USG_SUBTTY_WORKS above). */ | |
1985 | ||
60f0fb11 | 1986 | XPROCESS (process)->pty_flag = pty_flag; |
d0d6b7c5 | 1987 | XPROCESS (process)->status = Qrun; |
03f04413 | 1988 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1989 | |
1990 | /* Delay interrupts until we have a chance to store | |
1991 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1992 | #ifdef POSIX_SIGNALS |
1993 | sigemptyset (&blocked); | |
1994 | #ifdef SIGCHLD | |
1995 | sigaddset (&blocked, SIGCHLD); | |
1996 | #endif | |
351e611f | 1997 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1998 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1999 | this sets the parent's signal handlers as well as the child's. | |
2000 | So delay all interrupts whose handlers the child might munge, | |
2001 | and record the current handlers so they can be restored later. */ | |
2002 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
2003 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
2004 | #ifdef AIX | |
2005 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
2006 | #endif | |
351e611f | 2007 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2008 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
2009 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 | 2010 | #ifdef SIGCHLD |
e39a993c | 2011 | #if defined (BSD_SYSTEM) || defined (HPUX) |
d0d6b7c5 JB |
2012 | sigsetmask (sigmask (SIGCHLD)); |
2013 | #else /* ordinary USG */ | |
2014 | #if 0 | |
2015 | sigchld_deferred = 0; | |
2016 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
2017 | #endif | |
2018 | #endif /* ordinary USG */ | |
d0d6b7c5 | 2019 | #endif /* SIGCHLD */ |
0dc70c33 | 2020 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 2021 | |
3081bf8d | 2022 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 2023 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
2024 | if (inchannel > max_process_desc) |
2025 | max_process_desc = inchannel; | |
2026 | ||
d0d6b7c5 JB |
2027 | /* Until we store the proper pid, enable sigchld_handler |
2028 | to recognize an unknown pid as standing for this process. | |
2029 | It is very important not to let this `marker' value stay | |
2030 | in the table after this function has returned; if it does | |
2031 | it might cause call-process to hang and subsequent asynchronous | |
2032 | processes to get their return values scrambled. */ | |
6bfd98e7 | 2033 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 2034 | |
ececcbec | 2035 | BLOCK_INPUT; |
177c0ea7 | 2036 | |
d0d6b7c5 JB |
2037 | { |
2038 | /* child_setup must clobber environ on systems with true vfork. | |
2039 | Protect it from permanent change. */ | |
2040 | char **save_environ = environ; | |
2041 | ||
14dc6093 | 2042 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 2043 | |
e98d950b | 2044 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
2045 | pid = vfork (); |
2046 | if (pid == 0) | |
e98d950b | 2047 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2048 | { |
2049 | int xforkin = forkin; | |
2050 | int xforkout = forkout; | |
2051 | ||
2052 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
2053 | but fails to handle all the cases. */ | |
2054 | /* Make sure SIGCHLD is not blocked in the child. */ | |
2055 | sigsetmask (SIGEMPTYMASK); | |
2056 | #endif | |
2057 | ||
2058 | /* Make the pty be the controlling terminal of the process. */ | |
2059 | #ifdef HAVE_PTYS | |
2060 | /* First, disconnect its current controlling terminal. */ | |
2061 | #ifdef HAVE_SETSID | |
7ce48618 RS |
2062 | /* We tried doing setsid only if pty_flag, but it caused |
2063 | process_set_signal to fail on SGI when using a pipe. */ | |
2064 | setsid (); | |
ce4c9c90 | 2065 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 2066 | if (pty_flag) |
39e9ebcd | 2067 | { |
39e9ebcd RS |
2068 | #ifdef TIOCSCTTY |
2069 | /* We ignore the return value | |
2070 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
2071 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 2072 | #endif |
39e9ebcd | 2073 | } |
d0d6b7c5 | 2074 | #else /* not HAVE_SETSID */ |
c14e53a4 | 2075 | #ifdef USG |
000ab717 | 2076 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
2077 | afterwards. Otherwise, we lose our controlling tty which |
2078 | is set when we open the pty. */ | |
2079 | setpgrp (); | |
2080 | #endif /* USG */ | |
2081 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
2082 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
2083 | if (pty_flag && xforkin >= 0) | |
2084 | { | |
2085 | struct termios t; | |
2086 | tcgetattr (xforkin, &t); | |
2087 | t.c_lflag = LDISC1; | |
2088 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 2089 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
2090 | } |
2091 | #else | |
aafadd9f | 2092 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 2093 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
2094 | { |
2095 | /* Use new line discipline. */ | |
2096 | int ldisc = NTTYDISC; | |
4458f555 | 2097 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 2098 | } |
000ab717 | 2099 | #endif |
9bcf8ec6 | 2100 | #endif |
177c0ea7 | 2101 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
2102 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
2103 | can do TIOCSPGRP only to the process's controlling tty. */ | |
2104 | if (pty_flag) | |
2105 | { | |
177c0ea7 | 2106 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 2107 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 2108 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 2109 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 2110 | emacs_close (j); |
5a570e37 | 2111 | #ifndef USG |
d0d6b7c5 JB |
2112 | /* In order to get a controlling terminal on some versions |
2113 | of BSD, it is necessary to put the process in pgrp 0 | |
2114 | before it opens the terminal. */ | |
99c1aeca | 2115 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
2116 | setpgid (0, 0); |
2117 | #else | |
d0d6b7c5 | 2118 | setpgrp (0, 0); |
3ea1d291 | 2119 | #endif |
d0d6b7c5 JB |
2120 | #endif |
2121 | } | |
2122 | #endif /* TIOCNOTTY */ | |
2123 | ||
e39a993c | 2124 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 2125 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
2126 | conditional on TIOCSPGRP, |
2127 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
2128 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
2129 | that system does seem to need this code, even though | |
2130 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
2131 | /* Now close the pty (if we had it open) and reopen it. |
2132 | This makes the pty the controlling terminal of the subprocess. */ | |
2133 | if (pty_flag) | |
2134 | { | |
99e3d726 | 2135 | |
68c45bf0 PE |
2136 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2137 | would work? */ | |
d0d6b7c5 | 2138 | if (xforkin >= 0) |
68c45bf0 PE |
2139 | emacs_close (xforkin); |
2140 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2141 | |
4aa54ba8 RS |
2142 | if (xforkin < 0) |
2143 | { | |
68c45bf0 PE |
2144 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2145 | emacs_write (1, pty_name, strlen (pty_name)); | |
2146 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2147 | _exit (1); |
2148 | } | |
2149 | ||
d0d6b7c5 | 2150 | } |
e39a993c | 2151 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 2152 | |
d0d6b7c5 | 2153 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2154 | if (pty_flag) |
2155 | { | |
2156 | SETUP_SLAVE_PTY; | |
2157 | } | |
d0d6b7c5 JB |
2158 | #endif /* SETUP_SLAVE_PTY */ |
2159 | #ifdef AIX | |
2160 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2161 | Now reenable it in the child, so it will die when we want it to. */ | |
2162 | if (pty_flag) | |
2163 | signal (SIGHUP, SIG_DFL); | |
2164 | #endif | |
2165 | #endif /* HAVE_PTYS */ | |
2166 | ||
0dc70c33 KH |
2167 | signal (SIGINT, SIG_DFL); |
2168 | signal (SIGQUIT, SIG_DFL); | |
2169 | ||
2170 | /* Stop blocking signals in the child. */ | |
2171 | #ifdef POSIX_SIGNALS | |
2172 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2173 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 | 2174 | #ifdef SIGCHLD |
e39a993c | 2175 | #if defined (BSD_SYSTEM) || defined (HPUX) |
d0d6b7c5 JB |
2176 | sigsetmask (SIGEMPTYMASK); |
2177 | #else /* ordinary USG */ | |
63528b78 | 2178 | #if 0 |
d0d6b7c5 | 2179 | signal (SIGCHLD, sigchld); |
63528b78 | 2180 | #endif |
d0d6b7c5 | 2181 | #endif /* ordinary USG */ |
d0d6b7c5 | 2182 | #endif /* SIGCHLD */ |
0dc70c33 | 2183 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2184 | |
ab01d0a8 RS |
2185 | if (pty_flag) |
2186 | child_setup_tty (xforkout); | |
e98d950b RS |
2187 | #ifdef WINDOWSNT |
2188 | pid = child_setup (xforkin, xforkout, xforkout, | |
2189 | new_argv, 1, current_dir); | |
177c0ea7 | 2190 | #else /* not WINDOWSNT */ |
2c4df143 YM |
2191 | #ifdef FD_CLOEXEC |
2192 | emacs_close (wait_child_setup[0]); | |
2193 | #endif | |
d0d6b7c5 | 2194 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2195 | new_argv, 1, current_dir); |
e98d950b | 2196 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2197 | } |
2198 | environ = save_environ; | |
2199 | } | |
2200 | ||
ececcbec RS |
2201 | UNBLOCK_INPUT; |
2202 | ||
4a127b3b | 2203 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2204 | if (pid < 0) |
6311cf58 RS |
2205 | { |
2206 | if (forkin >= 0) | |
68c45bf0 | 2207 | emacs_close (forkin); |
6311cf58 | 2208 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2209 | emacs_close (forkout); |
6311cf58 | 2210 | } |
4a127b3b KH |
2211 | else |
2212 | { | |
2213 | /* vfork succeeded. */ | |
6bfd98e7 | 2214 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 2215 | |
e98d950b | 2216 | #ifdef WINDOWSNT |
4a127b3b | 2217 | register_child (pid, inchannel); |
e98d950b RS |
2218 | #endif /* WINDOWSNT */ |
2219 | ||
4a127b3b KH |
2220 | /* If the subfork execv fails, and it exits, |
2221 | this close hangs. I don't know why. | |
2222 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2223 | { |
2224 | struct atimer *timer; | |
2225 | EMACS_TIME offset; | |
177c0ea7 | 2226 | |
30904ab7 GM |
2227 | stop_polling (); |
2228 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2229 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2230 | |
30904ab7 GM |
2231 | if (forkin >= 0) |
2232 | emacs_close (forkin); | |
2233 | ||
2234 | cancel_atimer (timer); | |
2235 | start_polling (); | |
2236 | } | |
177c0ea7 | 2237 | |
4a127b3b | 2238 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2239 | emacs_close (forkout); |
d0d6b7c5 | 2240 | |
875e6b94 | 2241 | #ifdef HAVE_PTYS |
4a127b3b KH |
2242 | if (pty_flag) |
2243 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2244 | else | |
875e6b94 | 2245 | #endif |
4a127b3b | 2246 | XPROCESS (process)->tty_name = Qnil; |
2c4df143 YM |
2247 | |
2248 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
2249 | /* Wait for child_setup to complete in case that vfork is | |
2250 | actually defined as fork. The descriptor wait_child_setup[1] | |
2251 | of a pipe is closed at the child side either by close-on-exec | |
2252 | on successful execvp or the _exit call in child_setup. */ | |
2253 | { | |
2254 | char dummy; | |
2255 | ||
2256 | emacs_close (wait_child_setup[1]); | |
2257 | emacs_read (wait_child_setup[0], &dummy, 1); | |
2258 | emacs_close (wait_child_setup[0]); | |
2259 | } | |
2260 | #endif | |
4a127b3b | 2261 | } |
3b9a3dfa | 2262 | |
4a127b3b KH |
2263 | /* Restore the signal state whether vfork succeeded or not. |
2264 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2265 | #ifdef POSIX_SIGNALS |
351e611f | 2266 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2267 | /* Restore the parent's signal handlers. */ |
2268 | sigaction (SIGINT, &sigint_action, 0); | |
2269 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2270 | #ifdef AIX | |
2271 | sigaction (SIGHUP, &sighup_action, 0); | |
2272 | #endif | |
351e611f | 2273 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2274 | /* Stop blocking signals in the parent. */ |
2275 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2276 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 | 2277 | #ifdef SIGCHLD |
e39a993c | 2278 | #if defined (BSD_SYSTEM) || defined (HPUX) |
d0d6b7c5 JB |
2279 | sigsetmask (SIGEMPTYMASK); |
2280 | #else /* ordinary USG */ | |
2281 | #if 0 | |
2282 | signal (SIGCHLD, sigchld); | |
2283 | /* Now really handle any of these signals | |
2284 | that came in during this function. */ | |
2285 | if (sigchld_deferred) | |
2286 | kill (getpid (), SIGCHLD); | |
2287 | #endif | |
2288 | #endif /* ordinary USG */ | |
d0d6b7c5 | 2289 | #endif /* SIGCHLD */ |
0dc70c33 | 2290 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2291 | |
2292 | /* Now generate the error if vfork failed. */ | |
2293 | if (pid < 0) | |
2294 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 2295 | } |
d0d6b7c5 | 2296 | |
850d0752 NR |
2297 | void |
2298 | create_pty (process) | |
2299 | Lisp_Object process; | |
2300 | { | |
2301 | int inchannel, outchannel; | |
2302 | ||
2303 | /* Use volatile to protect variables from being clobbered by longjmp. */ | |
2304 | volatile int forkin, forkout; | |
2305 | volatile int pty_flag = 0; | |
2306 | ||
2307 | inchannel = outchannel = -1; | |
2308 | ||
2309 | #ifdef HAVE_PTYS | |
2310 | if (!NILP (Vprocess_connection_type)) | |
2311 | outchannel = inchannel = allocate_pty (); | |
2312 | ||
2313 | if (inchannel >= 0) | |
2314 | { | |
2315 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
2316 | /* On most USG systems it does not work to open the pty's tty here, | |
2317 | then close it and reopen it in the child. */ | |
2318 | #ifdef O_NOCTTY | |
2319 | /* Don't let this terminal become our controlling terminal | |
2320 | (in case we don't have one). */ | |
2321 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); | |
2322 | #else | |
2323 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); | |
2324 | #endif | |
2325 | if (forkin < 0) | |
2326 | report_file_error ("Opening pty", Qnil); | |
019d2c4c | 2327 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
2328 | /* In the case that vfork is defined as fork, the parent process |
2329 | (Emacs) may send some data before the child process completes | |
2330 | tty options setup. So we setup tty before forking. */ | |
2331 | child_setup_tty (forkout); | |
019d2c4c | 2332 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
2333 | #else |
2334 | forkin = forkout = -1; | |
2335 | #endif /* not USG, or USG_SUBTTY_WORKS */ | |
2336 | pty_flag = 1; | |
2337 | } | |
2338 | #endif /* HAVE_PTYS */ | |
2339 | ||
2340 | #ifdef O_NONBLOCK | |
2341 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
2342 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
2343 | #else | |
2344 | #ifdef O_NDELAY | |
2345 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
2346 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
2347 | #endif | |
2348 | #endif | |
2349 | ||
2350 | /* Record this as an active process, with its channels. | |
2351 | As a result, child_setup will close Emacs's side of the pipes. */ | |
2352 | chan_process[inchannel] = process; | |
2353 | XPROCESS (process)->infd = inchannel; | |
2354 | XPROCESS (process)->outfd = outchannel; | |
2355 | ||
2356 | /* Previously we recorded the tty descriptor used in the subprocess. | |
2357 | It was only used for getting the foreground tty process, so now | |
2358 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
2359 | more portable (see USG_SUBTTY_WORKS above). */ | |
2360 | ||
2361 | XPROCESS (process)->pty_flag = pty_flag; | |
2362 | XPROCESS (process)->status = Qrun; | |
2363 | setup_process_coding_systems (process); | |
2364 | ||
2365 | FD_SET (inchannel, &input_wait_mask); | |
2366 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
2367 | if (inchannel > max_process_desc) | |
2368 | max_process_desc = inchannel; | |
2369 | ||
2370 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
2371 | #ifdef HAVE_PTYS |
2372 | if (pty_flag) | |
2373 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2374 | else | |
2375 | #endif | |
2376 | XPROCESS (process)->tty_name = Qnil; | |
850d0752 NR |
2377 | } |
2378 | ||
e690ca94 | 2379 | \f |
d0d6b7c5 JB |
2380 | #ifdef HAVE_SOCKETS |
2381 | ||
e690ca94 KS |
2382 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2383 | The address family of sa is not included in the result. */ | |
2384 | ||
2385 | static Lisp_Object | |
2386 | conv_sockaddr_to_lisp (sa, len) | |
2387 | struct sockaddr *sa; | |
2388 | int len; | |
2389 | { | |
2390 | Lisp_Object address; | |
2391 | int i; | |
2392 | unsigned char *cp; | |
2393 | register struct Lisp_Vector *p; | |
2394 | ||
63136da6 AS |
2395 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2396 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2397 | a zero length name. */ | |
2398 | if (len < OFFSETOF (struct sockaddr, sa_family) + sizeof (sa->sa_family)) | |
fff4e459 | 2399 | return empty_unibyte_string; |
63136da6 | 2400 | |
e690ca94 KS |
2401 | switch (sa->sa_family) |
2402 | { | |
2403 | case AF_INET: | |
2404 | { | |
2405 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2406 | len = sizeof (sin->sin_addr) + 1; | |
2407 | address = Fmake_vector (make_number (len), Qnil); | |
2408 | p = XVECTOR (address); | |
2409 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2410 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2411 | break; |
2412 | } | |
e1652a86 KS |
2413 | #ifdef AF_INET6 |
2414 | case AF_INET6: | |
2415 | { | |
2416 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2417 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2418 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2419 | address = Fmake_vector (make_number (len), Qnil); | |
2420 | p = XVECTOR (address); | |
2421 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2422 | for (i = 0; i < len; i++) | |
2423 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2424 | return address; | |
2425 | } | |
2426 | #endif | |
e690ca94 KS |
2427 | #ifdef HAVE_LOCAL_SOCKETS |
2428 | case AF_LOCAL: | |
2429 | { | |
fb23673a EZ |
2430 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2431 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2432 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2433 | break; |
fb23673a | 2434 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2435 | } |
2436 | #endif | |
2437 | default: | |
63136da6 | 2438 | len -= OFFSETOF (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2439 | address = Fcons (make_number (sa->sa_family), |
2440 | Fmake_vector (make_number (len), Qnil)); | |
2441 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2442 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2443 | break; |
2444 | } | |
2445 | ||
2446 | i = 0; | |
2447 | while (i < len) | |
2448 | p->contents[i++] = make_number (*cp++); | |
2449 | ||
2450 | return address; | |
2451 | } | |
2452 | ||
2453 | ||
2454 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2455 | ||
2456 | static int | |
2457 | get_lisp_to_sockaddr_size (address, familyp) | |
2458 | Lisp_Object address; | |
2459 | int *familyp; | |
2460 | { | |
2461 | register struct Lisp_Vector *p; | |
2462 | ||
2463 | if (VECTORP (address)) | |
2464 | { | |
2465 | p = XVECTOR (address); | |
2466 | if (p->size == 5) | |
2467 | { | |
2468 | *familyp = AF_INET; | |
2469 | return sizeof (struct sockaddr_in); | |
2470 | } | |
e1652a86 KS |
2471 | #ifdef AF_INET6 |
2472 | else if (p->size == 9) | |
2473 | { | |
2474 | *familyp = AF_INET6; | |
2475 | return sizeof (struct sockaddr_in6); | |
2476 | } | |
2477 | #endif | |
e690ca94 KS |
2478 | } |
2479 | #ifdef HAVE_LOCAL_SOCKETS | |
2480 | else if (STRINGP (address)) | |
2481 | { | |
2482 | *familyp = AF_LOCAL; | |
2483 | return sizeof (struct sockaddr_un); | |
2484 | } | |
2485 | #endif | |
2486 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2487 | { | |
2488 | struct sockaddr *sa; | |
2489 | *familyp = XINT (XCAR (address)); | |
2490 | p = XVECTOR (XCDR (address)); | |
2491 | return p->size + sizeof (sa->sa_family); | |
2492 | } | |
2493 | return 0; | |
2494 | } | |
2495 | ||
2496 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2497 | |
2498 | The address format has been basically validated by | |
2499 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2500 | it could have come from user data. So if FAMILY is not valid, | |
2501 | we return after zeroing *SA. */ | |
e690ca94 KS |
2502 | |
2503 | static void | |
2504 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2505 | int family; | |
2506 | Lisp_Object address; | |
2507 | struct sockaddr *sa; | |
2508 | int len; | |
2509 | { | |
2510 | register struct Lisp_Vector *p; | |
34967d0f | 2511 | register unsigned char *cp = NULL; |
e690ca94 KS |
2512 | register int i; |
2513 | ||
2514 | bzero (sa, len); | |
e690ca94 KS |
2515 | |
2516 | if (VECTORP (address)) | |
2517 | { | |
2518 | p = XVECTOR (address); | |
2519 | if (family == AF_INET) | |
2520 | { | |
2521 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2522 | len = sizeof (sin->sin_addr) + 1; | |
2523 | i = XINT (p->contents[--len]); | |
2524 | sin->sin_port = htons (i); | |
2525 | cp = (unsigned char *)&sin->sin_addr; | |
9d1a8e5d | 2526 | sa->sa_family = family; |
e690ca94 | 2527 | } |
e1652a86 KS |
2528 | #ifdef AF_INET6 |
2529 | else if (family == AF_INET6) | |
2530 | { | |
2531 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2532 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2533 | len = sizeof (sin6->sin6_addr) + 1; | |
2534 | i = XINT (p->contents[--len]); | |
2535 | sin6->sin6_port = htons (i); | |
2536 | for (i = 0; i < len; i++) | |
2537 | if (INTEGERP (p->contents[i])) | |
2538 | { | |
2539 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2540 | ip6[i] = ntohs (j); | |
2541 | } | |
9d1a8e5d | 2542 | sa->sa_family = family; |
e1652a86 KS |
2543 | } |
2544 | #endif | |
6bf890d7 | 2545 | return; |
e690ca94 KS |
2546 | } |
2547 | else if (STRINGP (address)) | |
2548 | { | |
2549 | #ifdef HAVE_LOCAL_SOCKETS | |
2550 | if (family == AF_LOCAL) | |
2551 | { | |
fb23673a | 2552 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2553 | cp = SDATA (address); |
fb23673a EZ |
2554 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2555 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2556 | sa->sa_family = family; |
e690ca94 KS |
2557 | } |
2558 | #endif | |
2559 | return; | |
2560 | } | |
2561 | else | |
2562 | { | |
2563 | p = XVECTOR (XCDR (address)); | |
2564 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2565 | } | |
2566 | ||
2567 | for (i = 0; i < len; i++) | |
2568 | if (INTEGERP (p->contents[i])) | |
2569 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2570 | } | |
2571 | ||
2572 | #ifdef DATAGRAM_SOCKETS | |
2573 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2574 | 1, 1, 0, | |
2575 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2576 | (process) | |
2577 | Lisp_Object process; | |
2578 | { | |
2579 | int channel; | |
2580 | ||
2581 | CHECK_PROCESS (process); | |
2582 | ||
2583 | if (!DATAGRAM_CONN_P (process)) | |
2584 | return Qnil; | |
2585 | ||
60f0fb11 | 2586 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2587 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2588 | datagram_address[channel].len); | |
2589 | } | |
2590 | ||
2591 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2592 | 2, 2, 0, | |
2593 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2594 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2595 | (process, address) | |
2596 | Lisp_Object process, address; | |
2597 | { | |
2598 | int channel; | |
2599 | int family, len; | |
2600 | ||
2601 | CHECK_PROCESS (process); | |
2602 | ||
2603 | if (!DATAGRAM_CONN_P (process)) | |
2604 | return Qnil; | |
2605 | ||
60f0fb11 | 2606 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2607 | |
2608 | len = get_lisp_to_sockaddr_size (address, &family); | |
2609 | if (datagram_address[channel].len != len) | |
2610 | return Qnil; | |
2611 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2612 | return address; | |
2613 | } | |
2614 | #endif | |
2615 | \f | |
2616 | ||
5e2327cf | 2617 | static const struct socket_options { |
e690ca94 | 2618 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2619 | name without SO_ prefix. */ |
e690ca94 | 2620 | char *name; |
e690ca94 KS |
2621 | /* Option level SOL_... */ |
2622 | int optlevel; | |
2623 | /* Option number SO_... */ | |
2624 | int optnum; | |
6b61353c KH |
2625 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2626 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2627 | } socket_options[] = |
2628 | { | |
2629 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2630 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2631 | #endif |
2632 | #ifdef SO_BROADCAST | |
6b61353c | 2633 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2634 | #endif |
2635 | #ifdef SO_DONTROUTE | |
6b61353c | 2636 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2637 | #endif |
2638 | #ifdef SO_KEEPALIVE | |
6b61353c | 2639 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2640 | #endif |
2641 | #ifdef SO_LINGER | |
6b61353c | 2642 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2643 | #endif |
2644 | #ifdef SO_OOBINLINE | |
6b61353c | 2645 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2646 | #endif |
2647 | #ifdef SO_PRIORITY | |
6b61353c | 2648 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2649 | #endif |
2650 | #ifdef SO_REUSEADDR | |
6b61353c | 2651 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2652 | #endif |
6b61353c | 2653 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2654 | }; |
2655 | ||
6b61353c | 2656 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2657 | |
6b61353c KH |
2658 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2659 | Signals an error if setting a known option fails. | |
2660 | */ | |
e690ca94 KS |
2661 | |
2662 | static int | |
6b61353c | 2663 | set_socket_option (s, opt, val) |
e690ca94 | 2664 | int s; |
6b61353c | 2665 | Lisp_Object opt, val; |
e690ca94 | 2666 | { |
6b61353c | 2667 | char *name; |
5e2327cf | 2668 | const struct socket_options *sopt; |
6b61353c | 2669 | int ret = 0; |
e690ca94 | 2670 | |
6b61353c | 2671 | CHECK_SYMBOL (opt); |
e690ca94 | 2672 | |
6b61353c KH |
2673 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2674 | for (sopt = socket_options; sopt->name; sopt++) | |
2675 | if (strcmp (name, sopt->name) == 0) | |
2676 | break; | |
e690ca94 | 2677 | |
6b61353c KH |
2678 | switch (sopt->opttype) |
2679 | { | |
2680 | case SOPT_BOOL: | |
2681 | { | |
2682 | int optval; | |
2683 | optval = NILP (val) ? 0 : 1; | |
2684 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2685 | &optval, sizeof (optval)); | |
2686 | break; | |
2687 | } | |
e690ca94 | 2688 | |
6b61353c KH |
2689 | case SOPT_INT: |
2690 | { | |
2691 | int optval; | |
2692 | if (INTEGERP (val)) | |
2693 | optval = XINT (val); | |
2694 | else | |
2695 | error ("Bad option value for %s", name); | |
2696 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2697 | &optval, sizeof (optval)); | |
2698 | break; | |
2699 | } | |
e690ca94 | 2700 | |
6b61353c KH |
2701 | #ifdef SO_BINDTODEVICE |
2702 | case SOPT_IFNAME: | |
2703 | { | |
2704 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2705 | |
6b61353c KH |
2706 | /* This is broken, at least in the Linux 2.4 kernel. |
2707 | To unbind, the arg must be a zero integer, not the empty string. | |
2708 | This should work on all systems. KFS. 2003-09-23. */ | |
2709 | bzero (devname, sizeof devname); | |
2710 | if (STRINGP (val)) | |
e690ca94 | 2711 | { |
6b61353c KH |
2712 | char *arg = (char *) SDATA (val); |
2713 | int len = min (strlen (arg), IFNAMSIZ); | |
2714 | bcopy (arg, devname, len); | |
e690ca94 | 2715 | } |
6b61353c KH |
2716 | else if (!NILP (val)) |
2717 | error ("Bad option value for %s", name); | |
2718 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2719 | devname, IFNAMSIZ); | |
2720 | break; | |
2721 | } | |
2722 | #endif | |
e690ca94 | 2723 | |
177c0ea7 | 2724 | #ifdef SO_LINGER |
6b61353c KH |
2725 | case SOPT_LINGER: |
2726 | { | |
2727 | struct linger linger; | |
e690ca94 | 2728 | |
6b61353c KH |
2729 | linger.l_onoff = 1; |
2730 | linger.l_linger = 0; | |
2731 | if (INTEGERP (val)) | |
2732 | linger.l_linger = XINT (val); | |
2733 | else | |
2734 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2735 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2736 | &linger, sizeof (linger)); | |
2737 | break; | |
2738 | } | |
e690ca94 | 2739 | #endif |
6b61353c KH |
2740 | |
2741 | default: | |
2742 | return 0; | |
e690ca94 | 2743 | } |
6b61353c KH |
2744 | |
2745 | if (ret < 0) | |
2746 | report_file_error ("Cannot set network option", | |
2747 | Fcons (opt, Fcons (val, Qnil))); | |
2748 | return (1 << sopt->optbit); | |
e690ca94 KS |
2749 | } |
2750 | ||
6b61353c KH |
2751 | |
2752 | DEFUN ("set-network-process-option", | |
2753 | Fset_network_process_option, Sset_network_process_option, | |
2754 | 3, 4, 0, | |
2755 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2756 | See `make-network-process' for a list of options and values. | |
2757 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2758 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2759 | (process, option, value, no_error) | |
2760 | Lisp_Object process, option, value; | |
2761 | Lisp_Object no_error; | |
e690ca94 | 2762 | { |
6b61353c KH |
2763 | int s; |
2764 | struct Lisp_Process *p; | |
e690ca94 | 2765 | |
e690ca94 | 2766 | CHECK_PROCESS (process); |
6b61353c KH |
2767 | p = XPROCESS (process); |
2768 | if (!NETCONN1_P (p)) | |
2769 | error ("Process is not a network process"); | |
2770 | ||
60f0fb11 | 2771 | s = p->infd; |
6b61353c KH |
2772 | if (s < 0) |
2773 | error ("Process is not running"); | |
2774 | ||
2775 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2776 | { |
6b61353c KH |
2777 | p->childp = Fplist_put (p->childp, option, value); |
2778 | return Qt; | |
e690ca94 | 2779 | } |
6b61353c KH |
2780 | |
2781 | if (NILP (no_error)) | |
2782 | error ("Unknown or unsupported option"); | |
2783 | ||
2784 | return Qnil; | |
e690ca94 | 2785 | } |
6b61353c | 2786 | |
e690ca94 | 2787 | \f |
d888760c GM |
2788 | #ifdef HAVE_SERIAL |
2789 | DEFUN ("serial-process-configure", | |
2790 | Fserial_process_configure, | |
2791 | Sserial_process_configure, | |
2792 | 0, MANY, 0, | |
2793 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2794 | ||
2795 | Arguments are specified as keyword/argument pairs. Attributes that | |
2796 | are not given are re-initialized from the process's current | |
2797 | configuration (available via the function `process-contact') or set to | |
2798 | reasonable default values. The following arguments are defined: | |
2799 | ||
2800 | :process PROCESS | |
2801 | :name NAME | |
2802 | :buffer BUFFER | |
2803 | :port PORT | |
2804 | -- Any of these arguments can be given to identify the process that is | |
2805 | to be configured. If none of these arguments is given, the current | |
2806 | buffer's process is used. | |
2807 | ||
2808 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2809 | second, also called baud rate. Any value can be given for SPEED, but | |
2810 | most serial ports work only at a few defined values between 1200 and | |
2811 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2812 | serial port is not configured any further, i.e., all other arguments | |
2813 | are ignored. This may be useful for special serial ports such as | |
2814 | Bluetooth-to-serial converters which can only be configured through AT | |
2815 | commands. A value of nil for SPEED can be used only when passed | |
2816 | through `make-serial-process' or `serial-term'. | |
2817 | ||
2818 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2819 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2820 | ||
2821 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2822 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2823 | PARITY is not given, no parity is used. | |
2824 | ||
2825 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2826 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2827 | is not given or nil, 1 stopbit is used. | |
2828 | ||
2829 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2830 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2831 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2832 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2833 | flowcontrol is used. | |
2834 | ||
2835 | `serial-process-configure' is called by `make-serial-process' for the | |
2836 | initial configuration of the serial port. | |
2837 | ||
2838 | Examples: | |
2839 | ||
2840 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2841 | ||
2842 | \(serial-process-configure | |
2843 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2844 | ||
2845 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2846 | ||
2847 | usage: (serial-process-configure &rest ARGS) */) | |
2848 | (nargs, args) | |
2849 | int nargs; | |
2850 | Lisp_Object *args; | |
2851 | { | |
2852 | struct Lisp_Process *p; | |
2853 | Lisp_Object contact = Qnil; | |
2854 | Lisp_Object proc = Qnil; | |
2855 | struct gcpro gcpro1; | |
2856 | ||
2857 | contact = Flist (nargs, args); | |
2858 | GCPRO1 (contact); | |
2859 | ||
2860 | proc = Fplist_get (contact, QCprocess); | |
2861 | if (NILP (proc)) | |
2862 | proc = Fplist_get (contact, QCname); | |
2863 | if (NILP (proc)) | |
2864 | proc = Fplist_get (contact, QCbuffer); | |
2865 | if (NILP (proc)) | |
2866 | proc = Fplist_get (contact, QCport); | |
2867 | proc = get_process (proc); | |
2868 | p = XPROCESS (proc); | |
a879ee6f | 2869 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2870 | error ("Not a serial process"); |
2871 | ||
2872 | if (NILP (Fplist_get (p->childp, QCspeed))) | |
2873 | { | |
2874 | UNGCPRO; | |
2875 | return Qnil; | |
2876 | } | |
2877 | ||
2878 | serial_configure (p, contact); | |
2879 | ||
2880 | UNGCPRO; | |
2881 | return Qnil; | |
2882 | } | |
d888760c | 2883 | |
d888760c GM |
2884 | /* Used by make-serial-process to recover from errors. */ |
2885 | Lisp_Object make_serial_process_unwind (Lisp_Object proc) | |
2886 | { | |
2887 | if (!PROCESSP (proc)) | |
2888 | abort (); | |
2889 | remove_process (proc); | |
2890 | return Qnil; | |
2891 | } | |
d888760c | 2892 | |
d888760c GM |
2893 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2894 | 0, MANY, 0, | |
2895 | doc: /* Create and return a serial port process. | |
2896 | ||
2897 | In Emacs, serial port connections are represented by process objects, | |
2898 | so input and output work as for subprocesses, and `delete-process' | |
2899 | closes a serial port connection. However, a serial process has no | |
2900 | process id, it cannot be signaled, and the status codes are different | |
2901 | from normal processes. | |
2902 | ||
2903 | `make-serial-process' creates a process and a buffer, on which you | |
2904 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2905 | an interactive terminal. See below for examples. | |
2906 | ||
2907 | Arguments are specified as keyword/argument pairs. The following | |
2908 | arguments are defined: | |
2909 | ||
2910 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2911 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2912 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2913 | the backslashes in strings). | |
2914 | ||
2915 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
2916 | which is called by `make-serial-process'. | |
2917 | ||
2918 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2919 | the value of PORT is used. | |
2920 | ||
2921 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2922 | with the process. Process output goes at the end of that buffer, | |
2923 | unless you specify an output stream or filter function to handle the | |
2924 | output. If BUFFER is not given, the value of NAME is used. | |
2925 | ||
2926 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2927 | system used for both reading and writing for this process. If CODING | |
2928 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2929 | ENCODING is used for writing. | |
2930 | ||
2931 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2932 | the process is running. If BOOL is not given, query before exiting. | |
2933 | ||
2934 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2935 | In the stopped state, a serial process does not accept incoming data, | |
2936 | but you can send outgoing data. The stopped state is cleared by | |
2937 | `continue-process' and set by `stop-process'. | |
2938 | ||
2939 | :filter FILTER -- Install FILTER as the process filter. | |
2940 | ||
2941 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2942 | ||
2943 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2944 | ||
2945 | :speed | |
2946 | :bytesize | |
2947 | :parity | |
2948 | :stopbits | |
2949 | :flowcontrol | |
2950 | -- These arguments are handled by `serial-process-configure', which is | |
2951 | called by `make-serial-process'. | |
2952 | ||
2953 | The original argument list, possibly modified by later configuration, | |
2954 | is available via the function `process-contact'. | |
2955 | ||
2956 | Examples: | |
2957 | ||
2958 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2959 | ||
2960 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2961 | ||
2962 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2963 | ||
2964 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2965 | ||
2966 | usage: (make-serial-process &rest ARGS) */) | |
2967 | (nargs, args) | |
2968 | int nargs; | |
2969 | Lisp_Object *args; | |
2970 | { | |
2971 | int fd = -1; | |
2972 | Lisp_Object proc, contact, port; | |
2973 | struct Lisp_Process *p; | |
2974 | struct gcpro gcpro1; | |
2975 | Lisp_Object name, buffer; | |
2976 | Lisp_Object tem, val; | |
2977 | int specpdl_count = -1; | |
2978 | ||
2979 | if (nargs == 0) | |
2980 | return Qnil; | |
2981 | ||
2982 | contact = Flist (nargs, args); | |
2983 | GCPRO1 (contact); | |
2984 | ||
2985 | port = Fplist_get (contact, QCport); | |
2986 | if (NILP (port)) | |
2987 | error ("No port specified"); | |
2988 | CHECK_STRING (port); | |
2989 | ||
2990 | if (NILP (Fplist_member (contact, QCspeed))) | |
2991 | error (":speed not specified"); | |
2992 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2993 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2994 | ||
2995 | name = Fplist_get (contact, QCname); | |
2996 | if (NILP (name)) | |
2997 | name = port; | |
2998 | CHECK_STRING (name); | |
2999 | proc = make_process (name); | |
3000 | specpdl_count = SPECPDL_INDEX (); | |
3001 | record_unwind_protect (make_serial_process_unwind, proc); | |
3002 | p = XPROCESS (proc); | |
3003 | ||
3004 | fd = serial_open ((char*) SDATA (port)); | |
3005 | p->infd = fd; | |
3006 | p->outfd = fd; | |
3007 | if (fd > max_process_desc) | |
3008 | max_process_desc = fd; | |
3009 | chan_process[fd] = proc; | |
3010 | ||
3011 | buffer = Fplist_get (contact, QCbuffer); | |
3012 | if (NILP (buffer)) | |
3013 | buffer = name; | |
3014 | buffer = Fget_buffer_create (buffer); | |
3015 | p->buffer = buffer; | |
3016 | ||
3017 | p->childp = contact; | |
3018 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); | |
3019 | p->type = Qserial; | |
3020 | p->sentinel = Fplist_get (contact, QCsentinel); | |
3021 | p->filter = Fplist_get (contact, QCfilter); | |
3022 | p->log = Qnil; | |
3023 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
3024 | p->kill_without_query = 1; | |
3025 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
3026 | p->command = Qt; | |
3027 | p->pty_flag = 0; | |
3028 | ||
3029 | if (!EQ (p->command, Qt)) | |
3030 | { | |
3031 | FD_SET (fd, &input_wait_mask); | |
3032 | FD_SET (fd, &non_keyboard_wait_mask); | |
3033 | } | |
3034 | ||
3035 | if (BUFFERP (buffer)) | |
3036 | { | |
3037 | set_marker_both (p->mark, buffer, | |
3038 | BUF_ZV (XBUFFER (buffer)), | |
3039 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3040 | } | |
3041 | ||
3042 | tem = Fplist_member (contact, QCcoding); | |
3043 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3044 | tem = Qnil; | |
3045 | ||
3046 | val = Qnil; | |
3047 | if (!NILP (tem)) | |
3048 | { | |
3049 | val = XCAR (XCDR (tem)); | |
3050 | if (CONSP (val)) | |
3051 | val = XCAR (val); | |
3052 | } | |
3053 | else if (!NILP (Vcoding_system_for_read)) | |
3054 | val = Vcoding_system_for_read; | |
3055 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) | |
3056 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
3057 | val = Qnil; | |
3058 | p->decode_coding_system = val; | |
3059 | ||
3060 | val = Qnil; | |
3061 | if (!NILP (tem)) | |
3062 | { | |
3063 | val = XCAR (XCDR (tem)); | |
3064 | if (CONSP (val)) | |
3065 | val = XCDR (val); | |
3066 | } | |
3067 | else if (!NILP (Vcoding_system_for_write)) | |
3068 | val = Vcoding_system_for_write; | |
3069 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) | |
3070 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
3071 | val = Qnil; | |
3072 | p->encode_coding_system = val; | |
3073 | ||
3074 | setup_process_coding_systems (proc); | |
3075 | p->decoding_buf = make_uninit_string (0); | |
3076 | p->decoding_carryover = 0; | |
3077 | p->encoding_buf = make_uninit_string (0); | |
3078 | p->inherit_coding_system_flag | |
3079 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
3080 | ||
3081 | Fserial_process_configure(nargs, args); | |
3082 | ||
3083 | specpdl_ptr = specpdl + specpdl_count; | |
3084 | ||
3085 | UNGCPRO; | |
3086 | return proc; | |
3087 | } | |
3088 | #endif /* HAVE_SERIAL */ | |
3089 | ||
e690ca94 KS |
3090 | /* Create a network stream/datagram client/server process. Treated |
3091 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
3092 | differences are in status display and process deletion. A network |
3093 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
3094 | stop/continue it and deactivate/close it via delete-process */ |
3095 | ||
177c0ea7 JB |
3096 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
3097 | 0, MANY, 0, | |
e690ca94 KS |
3098 | doc: /* Create and return a network server or client process. |
3099 | ||
fa9d4315 | 3100 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
3101 | input and output work as for subprocesses and `delete-process' closes |
3102 | a network connection. However, a network process has no process id, | |
d22426e1 | 3103 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
3104 | processes. |
3105 | ||
3106 | Arguments are specified as keyword/argument pairs. The following | |
3107 | arguments are defined: | |
3108 | ||
3109 | :name NAME -- NAME is name for process. It is modified if necessary | |
3110 | to make it unique. | |
3111 | ||
3112 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
3113 | with the process. Process output goes at end of that buffer, unless | |
3114 | you specify an output stream or filter function to handle the output. | |
3115 | BUFFER may be also nil, meaning that this process is not associated | |
3116 | with any buffer. | |
3117 | ||
3118 | :host HOST -- HOST is name of the host to connect to, or its IP | |
3119 | address. The symbol `local' specifies the local host. If specified | |
3120 | for a server process, it must be a valid name or address for the local | |
3121 | host, and only clients connecting to that address will be accepted. | |
3122 | ||
3123 | :service SERVICE -- SERVICE is name of the service desired, or an | |
3124 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
3125 | a random port number is selected for the server. (If Emacs was |
3126 | compiled with getaddrinfo, a port number can also be specified as a | |
3127 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 3128 | |
9057ff80 | 3129 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
3130 | stream type connection, `datagram' creates a datagram type connection, |
3131 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 3132 | |
e690ca94 | 3133 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
3134 | service specified by HOST and SERVICE. The default (nil) is to use |
3135 | whatever address family (IPv4 or IPv6) that is defined for the host | |
3136 | and port number specified by HOST and SERVICE. Other address families | |
3137 | supported are: | |
e690ca94 | 3138 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
3139 | ipv4 -- use IPv4 address family only. |
3140 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
3141 | |
3142 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
3143 | This parameter is ignored when opening a client process. When specified | |
3144 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
3145 | ||
3146 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
3147 | connection. This parameter is ignored when opening a stream server | |
3148 | process. For a datagram server process, it specifies the initial | |
3149 | setting of the remote datagram address. When specified for a client | |
3150 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
3151 | ||
3152 | The format of ADDRESS depends on the address family: | |
3153 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
3154 | corresponding to numeric IP address A.B.C.D and port number P. | |
3155 | - A local address is represented as a string with the address in the | |
3156 | local address space. | |
3157 | - An "unsupported family" address is represented by a cons (F . AV) | |
3158 | where F is the family number and AV is a vector containing the socket | |
3159 | address data with one element per address data byte. Do not rely on | |
3160 | this format in portable code, as it may depend on implementation | |
3161 | defined constants, data sizes, and data structure alignment. | |
3162 | ||
6b61353c KH |
3163 | :coding CODING -- If CODING is a symbol, it specifies the coding |
3164 | system used for both reading and writing for this process. If CODING | |
3165 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
3166 | ENCODING is used for writing. | |
e690ca94 KS |
3167 | |
3168 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
3169 | return without waiting for the connection to complete; instead, the | |
3170 | sentinel function will be called with second arg matching "open" (if | |
3171 | successful) or "failed" when the connect completes. Default is to use | |
3172 | a blocking connect (i.e. wait) for stream type connections. | |
3173 | ||
3174 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 3175 | running when Emacs is exited. |
e690ca94 KS |
3176 | |
3177 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
3178 | In the stopped state, a server process does not accept new | |
3179 | connections, and a client process does not handle incoming traffic. | |
3180 | The stopped state is cleared by `continue-process' and set by | |
3181 | `stop-process'. | |
3182 | ||
3183 | :filter FILTER -- Install FILTER as the process filter. | |
3184 | ||
7392e23c KS |
3185 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
3186 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 3187 | If this keyword is not specified, the strings are multibyte if |
03f04413 KH |
3188 | `default-enable-multibyte-characters' is non-nil. |
3189 | ||
e690ca94 KS |
3190 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
3191 | ||
3192 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 3193 | function is called when the server accepts a network connection from a |
e690ca94 KS |
3194 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
3195 | is the server process, CLIENT is the new process for the connection, | |
3196 | and MESSAGE is a string. | |
3197 | ||
faa7db08 | 3198 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 3199 | |
6b61353c | 3200 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 3201 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
3202 | If QLEN is an integer, it is used as the max. length of the server's |
3203 | pending connection queue (also known as the backlog); the default | |
3204 | queue length is 5. Default is to create a client process. | |
3205 | ||
3206 | The following network options can be specified for this connection: | |
3207 | ||
3208 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
3209 | :dontroute BOOL -- Only send to directly connected hosts. | |
3210 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
3211 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
3212 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
3213 | :priority INT -- Set protocol defined priority for sent packets. | |
3214 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
3215 | (this is allowed by default for a server process). | |
3216 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
3217 | special privileges on some systems. | |
3218 | ||
3219 | Consult the relevant system programmer's manual pages for more | |
3220 | information on using these options. | |
3221 | ||
3222 | ||
3223 | A server process will listen for and accept connections from clients. | |
3224 | When a client connection is accepted, a new network process is created | |
3225 | for the connection with the following parameters: | |
e690ca94 | 3226 | |
e690ca94 KS |
3227 | - The client's process name is constructed by concatenating the server |
3228 | process' NAME and a client identification string. | |
3229 | - If the FILTER argument is non-nil, the client process will not get a | |
3230 | separate process buffer; otherwise, the client's process buffer is a newly | |
3231 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 3232 | NAME concatenated with the client identification string. |
e690ca94 KS |
3233 | - The connection type and the process filter and sentinel parameters are |
3234 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
3235 | - The client process' contact info is set according to the client's | |
3236 | addressing information (typically an IP address and a port number). | |
faa7db08 | 3237 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
3238 | |
3239 | Notice that the FILTER and SENTINEL args are never used directly by | |
3240 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
3241 | the server process, but via the optional :log function, accepted (and |
3242 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 3243 | |
365aee82 KS |
3244 | The original argument list, modified with the actual connection |
3245 | information, is available via the `process-contact' function. | |
365aee82 | 3246 | |
fa9d4315 | 3247 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
3248 | (nargs, args) |
3249 | int nargs; | |
3250 | Lisp_Object *args; | |
d0d6b7c5 JB |
3251 | { |
3252 | Lisp_Object proc; | |
e690ca94 KS |
3253 | Lisp_Object contact; |
3254 | struct Lisp_Process *p; | |
70dbdb36 | 3255 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3256 | struct addrinfo ai, *res, *lres; |
e1652a86 KS |
3257 | struct addrinfo hints; |
3258 | char *portstring, portbuf[128]; | |
70dbdb36 | 3259 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
3260 | struct _emacs_addrinfo |
3261 | { | |
3262 | int ai_family; | |
3263 | int ai_socktype; | |
3264 | int ai_protocol; | |
3265 | int ai_addrlen; | |
3266 | struct sockaddr *ai_addr; | |
3267 | struct _emacs_addrinfo *ai_next; | |
3268 | } ai, *res, *lres; | |
418b48fd | 3269 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
3270 | struct sockaddr_in address_in; |
3271 | #ifdef HAVE_LOCAL_SOCKETS | |
3272 | struct sockaddr_un address_un; | |
3273 | #endif | |
3274 | int port; | |
dd2a17ab KS |
3275 | int ret = 0; |
3276 | int xerrno = 0; | |
418b48fd | 3277 | int s = -1, outch, inch; |
e690ca94 | 3278 | struct gcpro gcpro1; |
aed13378 | 3279 | int count = SPECPDL_INDEX (); |
5684cd6e | 3280 | int count1; |
e690ca94 KS |
3281 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
3282 | Lisp_Object tem; | |
3283 | Lisp_Object name, buffer, host, service, address; | |
3284 | Lisp_Object filter, sentinel; | |
3285 | int is_non_blocking_client = 0; | |
6b61353c | 3286 | int is_server = 0, backlog = 5; |
9057ff80 | 3287 | int socktype; |
e690ca94 KS |
3288 | int family = -1; |
3289 | ||
3290 | if (nargs == 0) | |
3291 | return Qnil; | |
dd2a17ab | 3292 | |
e690ca94 KS |
3293 | /* Save arguments for process-contact and clone-process. */ |
3294 | contact = Flist (nargs, args); | |
3295 | GCPRO1 (contact); | |
3296 | ||
bff3ed0a RS |
3297 | #ifdef WINDOWSNT |
3298 | /* Ensure socket support is loaded if available. */ | |
3299 | init_winsock (TRUE); | |
3300 | #endif | |
3301 | ||
9057ff80 KS |
3302 | /* :type TYPE (nil: stream, datagram */ |
3303 | tem = Fplist_get (contact, QCtype); | |
3304 | if (NILP (tem)) | |
3305 | socktype = SOCK_STREAM; | |
3306 | #ifdef DATAGRAM_SOCKETS | |
3307 | else if (EQ (tem, Qdatagram)) | |
3308 | socktype = SOCK_DGRAM; | |
f00c449b SM |
3309 | #endif |
3310 | #ifdef HAVE_SEQPACKET | |
3311 | else if (EQ (tem, Qseqpacket)) | |
3312 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 3313 | #endif |
9057ff80 KS |
3314 | else |
3315 | error ("Unsupported connection type"); | |
e690ca94 KS |
3316 | |
3317 | /* :server BOOL */ | |
3318 | tem = Fplist_get (contact, QCserver); | |
3319 | if (!NILP (tem)) | |
3320 | { | |
75728599 JR |
3321 | /* Don't support network sockets when non-blocking mode is |
3322 | not available, since a blocked Emacs is not useful. */ | |
132d0475 | 3323 | #if !defined(O_NONBLOCK) && !defined(O_NDELAY) |
e690ca94 KS |
3324 | error ("Network servers not supported"); |
3325 | #else | |
3326 | is_server = 1; | |
6b61353c KH |
3327 | if (INTEGERP (tem)) |
3328 | backlog = XINT (tem); | |
e690ca94 KS |
3329 | #endif |
3330 | } | |
3331 | ||
3332 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
3333 | QCaddress = is_server ? QClocal : QCremote; | |
3334 | ||
d7e344cd | 3335 | /* :nowait BOOL */ |
84b31826 | 3336 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
3337 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
3338 | { | |
3339 | #ifndef NON_BLOCKING_CONNECT | |
3340 | error ("Non-blocking connect not supported"); | |
3341 | #else | |
3342 | is_non_blocking_client = 1; | |
3343 | #endif | |
3344 | } | |
3345 | ||
3346 | name = Fplist_get (contact, QCname); | |
3347 | buffer = Fplist_get (contact, QCbuffer); | |
3348 | filter = Fplist_get (contact, QCfilter); | |
3349 | sentinel = Fplist_get (contact, QCsentinel); | |
3350 | ||
b7826503 | 3351 | CHECK_STRING (name); |
e690ca94 | 3352 | |
e690ca94 KS |
3353 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
3354 | ai.ai_socktype = socktype; | |
3355 | ai.ai_protocol = 0; | |
3356 | ai.ai_next = NULL; | |
3357 | res = &ai; | |
a319f7c1 | 3358 | |
e690ca94 KS |
3359 | /* :local ADDRESS or :remote ADDRESS */ |
3360 | address = Fplist_get (contact, QCaddress); | |
3361 | if (!NILP (address)) | |
a319f7c1 | 3362 | { |
e690ca94 KS |
3363 | host = service = Qnil; |
3364 | ||
3365 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
3366 | error ("Malformed :address"); | |
3367 | ai.ai_family = family; | |
3368 | ai.ai_addr = alloca (ai.ai_addrlen); | |
3369 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
3370 | goto open_socket; | |
a319f7c1 | 3371 | } |
e690ca94 KS |
3372 | |
3373 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
3374 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 3375 | if (NILP (tem)) |
a319f7c1 | 3376 | { |
87b6ca8d | 3377 | #if defined(HAVE_GETADDRINFO) && defined(AF_INET6) |
e1652a86 KS |
3378 | family = AF_UNSPEC; |
3379 | #else | |
3380 | family = AF_INET; | |
e690ca94 | 3381 | #endif |
a319f7c1 | 3382 | } |
e1652a86 KS |
3383 | #ifdef HAVE_LOCAL_SOCKETS |
3384 | else if (EQ (tem, Qlocal)) | |
3385 | family = AF_LOCAL; | |
3386 | #endif | |
3387 | #ifdef AF_INET6 | |
3388 | else if (EQ (tem, Qipv6)) | |
3389 | family = AF_INET6; | |
3390 | #endif | |
3391 | else if (EQ (tem, Qipv4)) | |
3392 | family = AF_INET; | |
3393 | else if (INTEGERP (tem)) | |
3394 | family = XINT (tem); | |
3395 | else | |
e690ca94 | 3396 | error ("Unknown address family"); |
e1652a86 | 3397 | |
e690ca94 KS |
3398 | ai.ai_family = family; |
3399 | ||
3400 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3401 | service = Fplist_get (contact, QCservice); | |
3402 | ||
3403 | #ifdef HAVE_LOCAL_SOCKETS | |
3404 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3405 | { |
e690ca94 KS |
3406 | /* Host is not used. */ |
3407 | host = Qnil; | |
b7826503 | 3408 | CHECK_STRING (service); |
e690ca94 KS |
3409 | bzero (&address_un, sizeof address_un); |
3410 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 3411 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
3412 | ai.ai_addr = (struct sockaddr *) &address_un; |
3413 | ai.ai_addrlen = sizeof address_un; | |
3414 | goto open_socket; | |
d0d6b7c5 | 3415 | } |
e690ca94 | 3416 | #endif |
a319f7c1 | 3417 | |
e690ca94 KS |
3418 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3419 | host = Fplist_get (contact, QChost); | |
3420 | if (!NILP (host)) | |
3421 | { | |
3422 | if (EQ (host, Qlocal)) | |
3423 | host = build_string ("localhost"); | |
3424 | CHECK_STRING (host); | |
3425 | } | |
d0d6b7c5 | 3426 | |
798b64bb KH |
3427 | /* Slow down polling to every ten seconds. |
3428 | Some kernels have a bug which causes retrying connect to fail | |
3429 | after a connect. Polling can interfere with gethostbyname too. */ | |
3430 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3431 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3432 | { |
3433 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3434 | bind_polling_period (10); | |
3435 | } | |
798b64bb KH |
3436 | #endif |
3437 | ||
a319f7c1 | 3438 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3439 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3440 | Otherwise, use getservbyname to lookup the service. */ | |
3441 | if (!NILP (host)) | |
3442 | { | |
3443 | ||
3444 | /* SERVICE can either be a string or int. | |
3445 | Convert to a C string for later use by getaddrinfo. */ | |
3446 | if (EQ (service, Qt)) | |
3447 | portstring = "0"; | |
3448 | else if (INTEGERP (service)) | |
3449 | { | |
3450 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
3451 | portstring = portbuf; | |
3452 | } | |
3453 | else | |
3454 | { | |
3455 | CHECK_STRING (service); | |
d5db4077 | 3456 | portstring = SDATA (service); |
e690ca94 KS |
3457 | } |
3458 | ||
3459 | immediate_quit = 1; | |
3460 | QUIT; | |
3461 | memset (&hints, 0, sizeof (hints)); | |
3462 | hints.ai_flags = 0; | |
e1652a86 | 3463 | hints.ai_family = family; |
e690ca94 KS |
3464 | hints.ai_socktype = socktype; |
3465 | hints.ai_protocol = 0; | |
08116b48 CY |
3466 | |
3467 | #ifdef HAVE_RES_INIT | |
3468 | res_init (); | |
3469 | #endif | |
3470 | ||
d5db4077 | 3471 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 3472 | if (ret) |
f6270f62 | 3473 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 3474 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 3475 | #else |
63136da6 | 3476 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 3477 | #endif |
e690ca94 | 3478 | immediate_quit = 0; |
a319f7c1 | 3479 | |
e690ca94 KS |
3480 | goto open_socket; |
3481 | } | |
3482 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3483 | |
e690ca94 KS |
3484 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3485 | has been specified (e.g. for a local server process). */ | |
3486 | ||
3487 | if (EQ (service, Qt)) | |
3488 | port = 0; | |
3489 | else if (INTEGERP (service)) | |
3490 | port = htons ((unsigned short) XINT (service)); | |
3491 | else | |
616da37c | 3492 | { |
e690ca94 KS |
3493 | struct servent *svc_info; |
3494 | CHECK_STRING (service); | |
177c0ea7 | 3495 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
3496 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3497 | if (svc_info == 0) | |
d5db4077 | 3498 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3499 | port = svc_info->s_port; |
3500 | } | |
3501 | ||
3502 | bzero (&address_in, sizeof address_in); | |
3503 | address_in.sin_family = family; | |
3504 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3505 | address_in.sin_port = port; | |
3506 | ||
3507 | #ifndef HAVE_GETADDRINFO | |
3508 | if (!NILP (host)) | |
3509 | { | |
3510 | struct hostent *host_info_ptr; | |
3511 | ||
3512 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 3513 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3514 | immediate_quit = 1; |
3515 | QUIT; | |
08116b48 CY |
3516 | |
3517 | #ifdef HAVE_RES_INIT | |
3518 | res_init (); | |
3519 | #endif | |
3520 | ||
d5db4077 | 3521 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3522 | immediate_quit = 0; |
177c0ea7 | 3523 | |
e690ca94 KS |
3524 | if (host_info_ptr) |
3525 | { | |
3526 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
3527 | host_info_ptr->h_length); | |
3528 | family = host_info_ptr->h_addrtype; | |
3529 | address_in.sin_family = family; | |
3530 | } | |
3531 | else | |
3532 | /* Attempt to interpret host as numeric inet address */ | |
3533 | { | |
4624371d | 3534 | unsigned long numeric_addr; |
d5db4077 | 3535 | numeric_addr = inet_addr ((char *) SDATA (host)); |
4624371d | 3536 | if (numeric_addr == -1) |
d5db4077 | 3537 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3538 | |
e690ca94 KS |
3539 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
3540 | sizeof (address_in.sin_addr)); | |
3541 | } | |
d0d6b7c5 | 3542 | |
e690ca94 | 3543 | } |
dd2a17ab | 3544 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3545 | |
e690ca94 KS |
3546 | ai.ai_family = family; |
3547 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3548 | ai.ai_addrlen = sizeof address_in; | |
3549 | ||
3550 | open_socket: | |
3551 | ||
dd2a17ab | 3552 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3553 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3554 | s = -1; |
457a9bee | 3555 | |
dd2a17ab KS |
3556 | for (lres = res; lres; lres = lres->ai_next) |
3557 | { | |
6b61353c KH |
3558 | int optn, optbits; |
3559 | ||
4e9dd03b KS |
3560 | retry_connect: |
3561 | ||
dd2a17ab KS |
3562 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3563 | if (s < 0) | |
3564 | { | |
3565 | xerrno = errno; | |
3566 | continue; | |
3567 | } | |
0f2ee0c1 | 3568 | |
e690ca94 KS |
3569 | #ifdef DATAGRAM_SOCKETS |
3570 | if (!is_server && socktype == SOCK_DGRAM) | |
3571 | break; | |
3572 | #endif /* DATAGRAM_SOCKETS */ | |
3573 | ||
dd2a17ab | 3574 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3575 | if (is_non_blocking_client) |
dd2a17ab KS |
3576 | { |
3577 | #ifdef O_NONBLOCK | |
3578 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3579 | #else | |
3580 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3581 | #endif | |
3582 | if (ret < 0) | |
3583 | { | |
3584 | xerrno = errno; | |
3585 | emacs_close (s); | |
3586 | s = -1; | |
3587 | continue; | |
3588 | } | |
3589 | } | |
3590 | #endif | |
177c0ea7 | 3591 | |
dd2a17ab | 3592 | /* Make us close S if quit. */ |
dd2a17ab KS |
3593 | record_unwind_protect (close_file_unwind, make_number (s)); |
3594 | ||
6b61353c KH |
3595 | /* Parse network options in the arg list. |
3596 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3597 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3598 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3599 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3600 | ||
e690ca94 KS |
3601 | if (is_server) |
3602 | { | |
3603 | /* Configure as a server socket. */ | |
6b61353c KH |
3604 | |
3605 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3606 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3607 | #ifdef HAVE_LOCAL_SOCKETS |
3608 | if (family != AF_LOCAL) | |
3609 | #endif | |
6b61353c KH |
3610 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3611 | { | |
3612 | int optval = 1; | |
3613 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3614 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3615 | } | |
177c0ea7 | 3616 | |
e690ca94 KS |
3617 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3618 | report_file_error ("Cannot bind server socket", Qnil); | |
3619 | ||
3620 | #ifdef HAVE_GETSOCKNAME | |
3621 | if (EQ (service, Qt)) | |
3622 | { | |
3623 | struct sockaddr_in sa1; | |
3624 | int len1 = sizeof (sa1); | |
3625 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3626 | { | |
3627 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3628 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3629 | contact = Fplist_put (contact, QCservice, service); |
3630 | } | |
3631 | } | |
3632 | #endif | |
3633 | ||
84b31826 | 3634 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3635 | report_file_error ("Cannot listen on server socket", Qnil); |
3636 | ||
3637 | break; | |
3638 | } | |
3639 | ||
dd2a17ab KS |
3640 | immediate_quit = 1; |
3641 | QUIT; | |
3642 | ||
3643 | /* This turns off all alarm-based interrupts; the | |
3644 | bind_polling_period call above doesn't always turn all the | |
3645 | short-interval ones off, especially if interrupt_input is | |
3646 | set. | |
3647 | ||
3648 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3649 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3650 | |
3651 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3652 | ||
f40f9848 | 3653 | turn_on_atimers (0); |
dd2a17ab KS |
3654 | |
3655 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3656 | xerrno = errno; | |
3657 | ||
f40f9848 | 3658 | turn_on_atimers (1); |
dd2a17ab KS |
3659 | |
3660 | if (ret == 0 || xerrno == EISCONN) | |
3661 | { | |
dd2a17ab KS |
3662 | /* The unwind-protect will be discarded afterwards. |
3663 | Likewise for immediate_quit. */ | |
3664 | break; | |
3665 | } | |
3666 | ||
3667 | #ifdef NON_BLOCKING_CONNECT | |
3668 | #ifdef EINPROGRESS | |
e690ca94 | 3669 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3670 | break; |
3671 | #else | |
3672 | #ifdef EWOULDBLOCK | |
e690ca94 | 3673 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3674 | break; |
3675 | #endif | |
3676 | #endif | |
3677 | #endif | |
e333e864 | 3678 | |
0f2ee0c1 RS |
3679 | immediate_quit = 0; |
3680 | ||
dd2a17ab | 3681 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3682 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3683 | emacs_close (s); |
dd2a17ab | 3684 | s = -1; |
4e9dd03b KS |
3685 | |
3686 | if (xerrno == EINTR) | |
3687 | goto retry_connect; | |
dd2a17ab | 3688 | } |
457a9bee | 3689 | |
e690ca94 KS |
3690 | if (s >= 0) |
3691 | { | |
3692 | #ifdef DATAGRAM_SOCKETS | |
3693 | if (socktype == SOCK_DGRAM) | |
3694 | { | |
3695 | if (datagram_address[s].sa) | |
3696 | abort (); | |
3697 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3698 | datagram_address[s].len = lres->ai_addrlen; | |
3699 | if (is_server) | |
3700 | { | |
3701 | Lisp_Object remote; | |
3702 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3703 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3704 | { | |
3705 | int rfamily, rlen; | |
3706 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3707 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3708 | conv_lisp_to_sockaddr (rfamily, remote, | |
3709 | datagram_address[s].sa, rlen); | |
3710 | } | |
3711 | } | |
3712 | else | |
3713 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3714 | } | |
3715 | #endif | |
177c0ea7 | 3716 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3717 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3718 | #ifdef HAVE_GETSOCKNAME |
3719 | if (!is_server) | |
3720 | { | |
3721 | struct sockaddr_in sa1; | |
3722 | int len1 = sizeof (sa1); | |
3723 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3724 | contact = Fplist_put (contact, QClocal, | |
3725 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3726 | } | |
3727 | #endif | |
e690ca94 KS |
3728 | } |
3729 | ||
54b3b62f YM |
3730 | immediate_quit = 0; |
3731 | ||
dd2a17ab | 3732 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3733 | if (res != &ai) |
54b3b62f YM |
3734 | { |
3735 | BLOCK_INPUT; | |
3736 | freeaddrinfo (res); | |
3737 | UNBLOCK_INPUT; | |
3738 | } | |
dd2a17ab KS |
3739 | #endif |
3740 | ||
e690ca94 KS |
3741 | /* Discard the unwind protect for closing S, if any. */ |
3742 | specpdl_ptr = specpdl + count1; | |
3743 | ||
3744 | /* Unwind bind_polling_period and request_sigio. */ | |
3745 | unbind_to (count, Qnil); | |
3746 | ||
dd2a17ab KS |
3747 | if (s < 0) |
3748 | { | |
dd2a17ab KS |
3749 | /* If non-blocking got this far - and failed - assume non-blocking is |
3750 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3751 | the normal blocking calls to open-network-stream handles this error |
3752 | better. */ | |
3753 | if (is_non_blocking_client) | |
dd2a17ab | 3754 | return Qnil; |
dd2a17ab | 3755 | |
d0d6b7c5 | 3756 | errno = xerrno; |
e690ca94 KS |
3757 | if (is_server) |
3758 | report_file_error ("make server process failed", contact); | |
3759 | else | |
3760 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3761 | } |
44ade2e9 | 3762 | |
d0d6b7c5 | 3763 | inch = s; |
59f23005 | 3764 | outch = s; |
d0d6b7c5 JB |
3765 | |
3766 | if (!NILP (buffer)) | |
3767 | buffer = Fget_buffer_create (buffer); | |
3768 | proc = make_process (name); | |
3769 | ||
3770 | chan_process[inch] = proc; | |
3771 | ||
3772 | #ifdef O_NONBLOCK | |
3773 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3774 | #else | |
3775 | #ifdef O_NDELAY | |
3776 | fcntl (inch, F_SETFL, O_NDELAY); | |
3777 | #endif | |
3778 | #endif | |
3779 | ||
e690ca94 KS |
3780 | p = XPROCESS (proc); |
3781 | ||
3782 | p->childp = contact; | |
faa7db08 | 3783 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
d888760c | 3784 | p->type = Qnetwork; |
177c0ea7 | 3785 | |
e690ca94 KS |
3786 | p->buffer = buffer; |
3787 | p->sentinel = sentinel; | |
3788 | p->filter = filter; | |
3789 | p->log = Fplist_get (contact, QClog); | |
3790 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
60f0fb11 | 3791 | p->kill_without_query = 1; |
e690ca94 KS |
3792 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
3793 | p->command = Qt; | |
6bfd98e7 | 3794 | p->pid = 0; |
60f0fb11 SM |
3795 | p->infd = inch; |
3796 | p->outfd = outch; | |
84b31826 | 3797 | if (is_server && socktype != SOCK_DGRAM) |
e690ca94 | 3798 | p->status = Qlisten; |
dd2a17ab | 3799 | |
f523e0c3 SM |
3800 | /* Make the process marker point into the process buffer (if any). */ |
3801 | if (BUFFERP (buffer)) | |
3802 | set_marker_both (p->mark, buffer, | |
3803 | BUF_ZV (XBUFFER (buffer)), | |
3804 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3805 | ||
dd2a17ab | 3806 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3807 | if (is_non_blocking_client) |
dd2a17ab KS |
3808 | { |
3809 | /* We may get here if connect did succeed immediately. However, | |
3810 | in that case, we still need to signal this like a non-blocking | |
3811 | connection. */ | |
e690ca94 | 3812 | p->status = Qconnect; |
dd2a17ab KS |
3813 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3814 | { | |
3815 | FD_SET (inch, &connect_wait_mask); | |
3816 | num_pending_connects++; | |
3817 | } | |
3818 | } | |
3819 | else | |
3820 | #endif | |
e690ca94 KS |
3821 | /* A server may have a client filter setting of Qt, but it must |
3822 | still listen for incoming connects unless it is stopped. */ | |
3823 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3824 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3825 | { |
3826 | FD_SET (inch, &input_wait_mask); | |
3827 | FD_SET (inch, &non_keyboard_wait_mask); | |
3828 | } | |
3829 | ||
7d0e672e RS |
3830 | if (inch > max_process_desc) |
3831 | max_process_desc = inch; | |
d0d6b7c5 | 3832 | |
e690ca94 KS |
3833 | tem = Fplist_member (contact, QCcoding); |
3834 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3835 | tem = Qnil; /* No error message (too late!). */ | |
3836 | ||
67918941 RS |
3837 | { |
3838 | /* Setup coding systems for communicating with the network stream. */ | |
3839 | struct gcpro gcpro1; | |
3840 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3841 | Lisp_Object coding_systems = Qt; | |
3842 | Lisp_Object args[5], val; | |
3843 | ||
e690ca94 | 3844 | if (!NILP (tem)) |
6b61353c KH |
3845 | { |
3846 | val = XCAR (XCDR (tem)); | |
3847 | if (CONSP (val)) | |
3848 | val = XCAR (val); | |
3849 | } | |
e690ca94 | 3850 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3851 | val = Vcoding_system_for_read; |
41d03b9a GM |
3852 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3853 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3854 | /* We dare not decode end-of-line format by setting VAL to |
3855 | Qraw_text, because the existing Emacs Lisp libraries | |
3856 | assume that they receive bare code including a sequene of | |
3857 | CR LF. */ | |
3858 | val = Qnil; | |
3859 | else | |
3860 | { | |
991234f0 KS |
3861 | if (NILP (host) || NILP (service)) |
3862 | coding_systems = Qnil; | |
3863 | else | |
3864 | { | |
3865 | args[0] = Qopen_network_stream, args[1] = name, | |
3866 | args[2] = buffer, args[3] = host, args[4] = service; | |
3867 | GCPRO1 (proc); | |
3868 | coding_systems = Ffind_operation_coding_system (5, args); | |
3869 | UNGCPRO; | |
3870 | } | |
67918941 | 3871 | if (CONSP (coding_systems)) |
70949dac | 3872 | val = XCAR (coding_systems); |
67918941 | 3873 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3874 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3875 | else |
3876 | val = Qnil; | |
3877 | } | |
e690ca94 | 3878 | p->decode_coding_system = val; |
0fa1789e | 3879 | |
e690ca94 | 3880 | if (!NILP (tem)) |
6b61353c KH |
3881 | { |
3882 | val = XCAR (XCDR (tem)); | |
3883 | if (CONSP (val)) | |
3884 | val = XCDR (val); | |
3885 | } | |
e690ca94 | 3886 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3887 | val = Vcoding_system_for_write; |
3888 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3889 | val = Qnil; | |
3890 | else | |
3891 | { | |
3892 | if (EQ (coding_systems, Qt)) | |
3893 | { | |
991234f0 KS |
3894 | if (NILP (host) || NILP (service)) |
3895 | coding_systems = Qnil; | |
3896 | else | |
3897 | { | |
3898 | args[0] = Qopen_network_stream, args[1] = name, | |
3899 | args[2] = buffer, args[3] = host, args[4] = service; | |
3900 | GCPRO1 (proc); | |
3901 | coding_systems = Ffind_operation_coding_system (5, args); | |
3902 | UNGCPRO; | |
3903 | } | |
67918941 RS |
3904 | } |
3905 | if (CONSP (coding_systems)) | |
70949dac | 3906 | val = XCDR (coding_systems); |
67918941 | 3907 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3908 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3909 | else |
3910 | val = Qnil; | |
3911 | } | |
e690ca94 | 3912 | p->encode_coding_system = val; |
67918941 | 3913 | } |
03f04413 | 3914 | setup_process_coding_systems (proc); |
0fa1789e | 3915 | |
e690ca94 | 3916 | p->decoding_buf = make_uninit_string (0); |
60f0fb11 | 3917 | p->decoding_carryover = 0; |
e690ca94 | 3918 | p->encoding_buf = make_uninit_string (0); |
0fa1789e | 3919 | |
e690ca94 | 3920 | p->inherit_coding_system_flag |
e6fca843 | 3921 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3922 | |
d0d6b7c5 JB |
3923 | UNGCPRO; |
3924 | return proc; | |
3925 | } | |
3926 | #endif /* HAVE_SOCKETS */ | |
3927 | ||
6b61353c KH |
3928 | \f |
3929 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
3930 | ||
3931 | #ifdef SIOCGIFCONF | |
3932 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3933 | doc: /* Return an alist of all network interfaces and their network address. | |
3934 | Each element is a cons, the car of which is a string containing the | |
3935 | interface name, and the cdr is the network address in internal | |
3936 | format; see the description of ADDRESS in `make-network-process'. */) | |
3937 | () | |
3938 | { | |
3939 | struct ifconf ifconf; | |
3940 | struct ifreq *ifreqs = NULL; | |
3941 | int ifaces = 0; | |
3942 | int buf_size, s; | |
3943 | Lisp_Object res; | |
3944 | ||
3945 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3946 | if (s < 0) | |
3947 | return Qnil; | |
3948 | ||
3949 | again: | |
3950 | ifaces += 25; | |
3951 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3952 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3953 | if (!ifreqs) | |
3954 | { | |
3955 | close (s); | |
3956 | return Qnil; | |
3957 | } | |
3958 | ||
3959 | ifconf.ifc_len = buf_size; | |
3960 | ifconf.ifc_req = ifreqs; | |
3961 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3962 | { | |
3963 | close (s); | |
3964 | return Qnil; | |
3965 | } | |
3966 | ||
3967 | if (ifconf.ifc_len == buf_size) | |
3968 | goto again; | |
3969 | ||
3970 | close (s); | |
3971 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3972 | ||
3973 | res = Qnil; | |
3974 | while (--ifaces >= 0) | |
3975 | { | |
3976 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3977 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3978 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3979 | continue; | |
3980 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3981 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3982 | res = Fcons (Fcons (build_string (namebuf), | |
3983 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3984 | sizeof (struct sockaddr))), | |
3985 | res); | |
3986 | } | |
3987 | ||
3988 | return res; | |
3989 | } | |
3990 | #endif /* SIOCGIFCONF */ | |
3991 | ||
3992 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3993 | ||
3994 | struct ifflag_def { | |
3995 | int flag_bit; | |
91433552 | 3996 | const char *flag_sym; |
6b61353c KH |
3997 | }; |
3998 | ||
91433552 | 3999 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
4000 | #ifdef IFF_UP |
4001 | { IFF_UP, "up" }, | |
4002 | #endif | |
4003 | #ifdef IFF_BROADCAST | |
4004 | { IFF_BROADCAST, "broadcast" }, | |
4005 | #endif | |
4006 | #ifdef IFF_DEBUG | |
4007 | { IFF_DEBUG, "debug" }, | |
4008 | #endif | |
4009 | #ifdef IFF_LOOPBACK | |
4010 | { IFF_LOOPBACK, "loopback" }, | |
4011 | #endif | |
4012 | #ifdef IFF_POINTOPOINT | |
4013 | { IFF_POINTOPOINT, "pointopoint" }, | |
4014 | #endif | |
4015 | #ifdef IFF_RUNNING | |
4016 | { IFF_RUNNING, "running" }, | |
4017 | #endif | |
4018 | #ifdef IFF_NOARP | |
4019 | { IFF_NOARP, "noarp" }, | |
4020 | #endif | |
4021 | #ifdef IFF_PROMISC | |
4022 | { IFF_PROMISC, "promisc" }, | |
4023 | #endif | |
4024 | #ifdef IFF_NOTRAILERS | |
4025 | { IFF_NOTRAILERS, "notrailers" }, | |
4026 | #endif | |
4027 | #ifdef IFF_ALLMULTI | |
4028 | { IFF_ALLMULTI, "allmulti" }, | |
4029 | #endif | |
4030 | #ifdef IFF_MASTER | |
4031 | { IFF_MASTER, "master" }, | |
4032 | #endif | |
4033 | #ifdef IFF_SLAVE | |
4034 | { IFF_SLAVE, "slave" }, | |
4035 | #endif | |
4036 | #ifdef IFF_MULTICAST | |
4037 | { IFF_MULTICAST, "multicast" }, | |
4038 | #endif | |
4039 | #ifdef IFF_PORTSEL | |
4040 | { IFF_PORTSEL, "portsel" }, | |
4041 | #endif | |
4042 | #ifdef IFF_AUTOMEDIA | |
4043 | { IFF_AUTOMEDIA, "automedia" }, | |
4044 | #endif | |
4045 | #ifdef IFF_DYNAMIC | |
4046 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 4047 | #endif |
2026418c YM |
4048 | #ifdef IFF_OACTIVE |
4049 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
4050 | #endif |
4051 | #ifdef IFF_SIMPLEX | |
4052 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
4053 | #endif | |
4054 | #ifdef IFF_LINK0 | |
4055 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
4056 | #endif | |
4057 | #ifdef IFF_LINK1 | |
4058 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
4059 | #endif | |
4060 | #ifdef IFF_LINK2 | |
4061 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
4062 | #endif |
4063 | { 0, 0 } | |
4064 | }; | |
4065 | ||
4066 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
4067 | doc: /* Return information about network interface named IFNAME. | |
4068 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
4069 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
4070 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
4071 | FLAGS is the current flags of the interface. */) | |
4072 | (ifname) | |
4073 | Lisp_Object ifname; | |
4074 | { | |
4075 | struct ifreq rq; | |
4076 | Lisp_Object res = Qnil; | |
4077 | Lisp_Object elt; | |
4078 | int s; | |
4079 | int any = 0; | |
4080 | ||
4081 | CHECK_STRING (ifname); | |
4082 | ||
4083 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
4084 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
4085 | ||
4086 | s = socket (AF_INET, SOCK_STREAM, 0); | |
4087 | if (s < 0) | |
4088 | return Qnil; | |
4089 | ||
4090 | elt = Qnil; | |
4091 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) | |
4092 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) | |
4093 | { | |
4094 | int flags = rq.ifr_flags; | |
91433552 | 4095 | const struct ifflag_def *fp; |
6b61353c KH |
4096 | int fnum; |
4097 | ||
4098 | any++; | |
82a80058 | 4099 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
4100 | { |
4101 | if (flags & fp->flag_bit) | |
4102 | { | |
4103 | elt = Fcons (intern (fp->flag_sym), elt); | |
4104 | flags -= fp->flag_bit; | |
4105 | } | |
4106 | } | |
4107 | for (fnum = 0; flags && fnum < 32; fnum++) | |
4108 | { | |
4109 | if (flags & (1 << fnum)) | |
4110 | { | |
4111 | elt = Fcons (make_number (fnum), elt); | |
4112 | } | |
4113 | } | |
4114 | } | |
4115 | #endif | |
4116 | res = Fcons (elt, res); | |
4117 | ||
4118 | elt = Qnil; | |
4119 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) | |
4120 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) | |
4121 | { | |
4122 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
4123 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
4124 | int n; | |
4125 | ||
4126 | any++; | |
4127 | for (n = 0; n < 6; n++) | |
4128 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
4129 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
4130 | } | |
4131 | #endif | |
4132 | res = Fcons (elt, res); | |
4133 | ||
4134 | elt = Qnil; | |
2026418c | 4135 | #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
4136 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
4137 | { | |
4138 | any++; | |
2026418c | 4139 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 4140 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
4141 | #else |
4142 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
4143 | #endif | |
6b61353c KH |
4144 | } |
4145 | #endif | |
4146 | res = Fcons (elt, res); | |
4147 | ||
4148 | elt = Qnil; | |
4149 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) | |
4150 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) | |
4151 | { | |
4152 | any++; | |
4153 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
4154 | } | |
4155 | #endif | |
4156 | res = Fcons (elt, res); | |
4157 | ||
4158 | elt = Qnil; | |
4159 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) | |
4160 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) | |
4161 | { | |
4162 | any++; | |
4163 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
4164 | } | |
4165 | #endif | |
4166 | res = Fcons (elt, res); | |
4167 | ||
4168 | close (s); | |
4169 | ||
4170 | return any ? res : Qnil; | |
4171 | } | |
4172 | #endif | |
4173 | #endif /* HAVE_SOCKETS */ | |
4174 | ||
04391069 RS |
4175 | /* Turn off input and output for process PROC. */ |
4176 | ||
6b53bb85 | 4177 | void |
d0d6b7c5 JB |
4178 | deactivate_process (proc) |
4179 | Lisp_Object proc; | |
4180 | { | |
4181 | register int inchannel, outchannel; | |
4182 | register struct Lisp_Process *p = XPROCESS (proc); | |
4183 | ||
60f0fb11 SM |
4184 | inchannel = p->infd; |
4185 | outchannel = p->outfd; | |
d0d6b7c5 | 4186 | |
6b61353c | 4187 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 4188 | if (p->read_output_delay > 0) |
6b61353c KH |
4189 | { |
4190 | if (--process_output_delay_count < 0) | |
4191 | process_output_delay_count = 0; | |
60f0fb11 SM |
4192 | p->read_output_delay = 0; |
4193 | p->read_output_skip = 0; | |
6b61353c KH |
4194 | } |
4195 | #endif | |
f3d9532b | 4196 | |
a9f2c884 | 4197 | if (inchannel >= 0) |
d0d6b7c5 JB |
4198 | { |
4199 | /* Beware SIGCHLD hereabouts. */ | |
4200 | flush_pending_output (inchannel); | |
68c45bf0 | 4201 | emacs_close (inchannel); |
a9f2c884 | 4202 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 4203 | emacs_close (outchannel); |
d0d6b7c5 | 4204 | |
60f0fb11 SM |
4205 | p->infd = -1; |
4206 | p->outfd = -1; | |
e690ca94 KS |
4207 | #ifdef DATAGRAM_SOCKETS |
4208 | if (DATAGRAM_CHAN_P (inchannel)) | |
4209 | { | |
4210 | xfree (datagram_address[inchannel].sa); | |
4211 | datagram_address[inchannel].sa = 0; | |
4212 | datagram_address[inchannel].len = 0; | |
4213 | } | |
4214 | #endif | |
d0d6b7c5 JB |
4215 | chan_process[inchannel] = Qnil; |
4216 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 4217 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 4218 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4219 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
4220 | { | |
4221 | FD_CLR (inchannel, &connect_wait_mask); | |
4222 | if (--num_pending_connects < 0) | |
4223 | abort (); | |
4224 | } | |
bad49fc7 | 4225 | #endif |
7d0e672e RS |
4226 | if (inchannel == max_process_desc) |
4227 | { | |
4228 | int i; | |
4229 | /* We just closed the highest-numbered process input descriptor, | |
4230 | so recompute the highest-numbered one now. */ | |
4231 | max_process_desc = 0; | |
4232 | for (i = 0; i < MAXDESC; i++) | |
4233 | if (!NILP (chan_process[i])) | |
4234 | max_process_desc = i; | |
4235 | } | |
d0d6b7c5 JB |
4236 | } |
4237 | } | |
4238 | ||
4239 | /* Close all descriptors currently in use for communication | |
4240 | with subprocess. This is used in a newly-forked subprocess | |
4241 | to get rid of irrelevant descriptors. */ | |
4242 | ||
6b53bb85 | 4243 | void |
d0d6b7c5 JB |
4244 | close_process_descs () |
4245 | { | |
e98d950b | 4246 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
4247 | int i; |
4248 | for (i = 0; i < MAXDESC; i++) | |
4249 | { | |
4250 | Lisp_Object process; | |
4251 | process = chan_process[i]; | |
4252 | if (!NILP (process)) | |
4253 | { | |
60f0fb11 SM |
4254 | int in = XPROCESS (process)->infd; |
4255 | int out = XPROCESS (process)->outfd; | |
a9f2c884 | 4256 | if (in >= 0) |
68c45bf0 | 4257 | emacs_close (in); |
a9f2c884 | 4258 | if (out >= 0 && in != out) |
68c45bf0 | 4259 | emacs_close (out); |
d0d6b7c5 JB |
4260 | } |
4261 | } | |
e98d950b | 4262 | #endif |
d0d6b7c5 JB |
4263 | } |
4264 | \f | |
4265 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 4266 | 0, 4, 0, |
fdb82f93 PJ |
4267 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
4268 | It is read into the process' buffers or given to their filter functions. | |
4269 | Non-nil arg PROCESS means do not return until some output has been received | |
4270 | from PROCESS. | |
5088da42 | 4271 | |
2a7bb882 MR |
4272 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
4273 | and milliseconds to wait; return after that much time whether or not | |
4274 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 4275 | it specifies a fractional number of seconds to wait. |
891bd142 | 4276 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 4277 | |
107ed38d KS |
4278 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
4279 | from PROCESS, suspending reading output from other processes. | |
4280 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 4281 | Return non-nil if we received any output before the timeout expired. */) |
5088da42 KS |
4282 | (process, seconds, millisec, just_this_one) |
4283 | register Lisp_Object process, seconds, millisec, just_this_one; | |
d0d6b7c5 | 4284 | { |
5088da42 | 4285 | int secs, usecs = 0; |
d0d6b7c5 | 4286 | |
0748d150 | 4287 | if (! NILP (process)) |
b7826503 | 4288 | CHECK_PROCESS (process); |
107ed38d KS |
4289 | else |
4290 | just_this_one = Qnil; | |
0748d150 | 4291 | |
891bd142 SM |
4292 | if (!NILP (millisec)) |
4293 | { /* Obsolete calling convention using integers rather than floats. */ | |
4294 | CHECK_NUMBER (millisec); | |
4295 | if (NILP (seconds)) | |
4296 | seconds = make_float (XINT (millisec) / 1000.0); | |
4297 | else | |
4298 | { | |
4299 | CHECK_NUMBER (seconds); | |
4300 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
4301 | } | |
4302 | } | |
4303 | ||
5088da42 | 4304 | if (!NILP (seconds)) |
d0d6b7c5 | 4305 | { |
5088da42 KS |
4306 | if (INTEGERP (seconds)) |
4307 | secs = XINT (seconds); | |
4308 | else if (FLOATP (seconds)) | |
4309 | { | |
4310 | double timeout = XFLOAT_DATA (seconds); | |
4311 | secs = (int) timeout; | |
4312 | usecs = (int) ((timeout - (double) secs) * 1000000); | |
4313 | } | |
4314 | else | |
4315 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 4316 | |
5088da42 KS |
4317 | if (secs < 0 || (secs == 0 && usecs == 0)) |
4318 | secs = -1, usecs = 0; | |
d0d6b7c5 JB |
4319 | } |
4320 | else | |
5088da42 | 4321 | secs = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
4322 | |
4323 | return | |
5088da42 | 4324 | (wait_reading_process_output (secs, usecs, 0, 0, |
214d6069 KS |
4325 | Qnil, |
4326 | !NILP (process) ? XPROCESS (process) : NULL, | |
4327 | NILP (just_this_one) ? 0 : | |
4328 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
4329 | ? Qt : Qnil); |
4330 | } | |
4331 | ||
e690ca94 KS |
4332 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4333 | ||
4334 | static int connect_counter = 0; | |
4335 | ||
4336 | static void | |
4337 | server_accept_connection (server, channel) | |
4338 | Lisp_Object server; | |
4339 | int channel; | |
4340 | { | |
4341 | Lisp_Object proc, caller, name, buffer; | |
4342 | Lisp_Object contact, host, service; | |
4343 | struct Lisp_Process *ps= XPROCESS (server); | |
4344 | struct Lisp_Process *p; | |
4345 | int s; | |
4346 | union u_sockaddr { | |
4347 | struct sockaddr sa; | |
4348 | struct sockaddr_in in; | |
e1652a86 KS |
4349 | #ifdef AF_INET6 |
4350 | struct sockaddr_in6 in6; | |
4351 | #endif | |
e690ca94 KS |
4352 | #ifdef HAVE_LOCAL_SOCKETS |
4353 | struct sockaddr_un un; | |
4354 | #endif | |
4355 | } saddr; | |
4356 | int len = sizeof saddr; | |
4357 | ||
4358 | s = accept (channel, &saddr.sa, &len); | |
4359 | ||
4360 | if (s < 0) | |
4361 | { | |
4362 | int code = errno; | |
4363 | ||
4364 | if (code == EAGAIN) | |
4365 | return; | |
4366 | #ifdef EWOULDBLOCK | |
4367 | if (code == EWOULDBLOCK) | |
4368 | return; | |
4369 | #endif | |
4370 | ||
4371 | if (!NILP (ps->log)) | |
4372 | call3 (ps->log, server, Qnil, | |
4373 | concat3 (build_string ("accept failed with code"), | |
4374 | Fnumber_to_string (make_number (code)), | |
4375 | build_string ("\n"))); | |
4376 | return; | |
4377 | } | |
4378 | ||
4379 | connect_counter++; | |
4380 | ||
4381 | /* Setup a new process to handle the connection. */ | |
4382 | ||
4383 | /* Generate a unique identification of the caller, and build contact | |
4384 | information for this process. */ | |
4385 | host = Qt; | |
4386 | service = Qnil; | |
4387 | switch (saddr.sa.sa_family) | |
4388 | { | |
4389 | case AF_INET: | |
4390 | { | |
4391 | Lisp_Object args[5]; | |
4392 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4393 | args[0] = build_string ("%d.%d.%d.%d"); | |
4394 | args[1] = make_number (*ip++); | |
4395 | args[2] = make_number (*ip++); | |
4396 | args[3] = make_number (*ip++); | |
4397 | args[4] = make_number (*ip++); | |
4398 | host = Fformat (5, args); | |
4399 | service = make_number (ntohs (saddr.in.sin_port)); | |
4400 | ||
4401 | args[0] = build_string (" <%s:%d>"); | |
4402 | args[1] = host; | |
4403 | args[2] = service; | |
4404 | caller = Fformat (3, args); | |
4405 | } | |
4406 | break; | |
4407 | ||
e1652a86 KS |
4408 | #ifdef AF_INET6 |
4409 | case AF_INET6: | |
4410 | { | |
4411 | Lisp_Object args[9]; | |
4412 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4413 | int i; | |
4414 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4415 | for (i = 0; i < 8; i++) | |
4416 | args[i+1] = make_number (ntohs(ip6[i])); | |
4417 | host = Fformat (9, args); | |
4418 | service = make_number (ntohs (saddr.in.sin_port)); | |
4419 | ||
4420 | args[0] = build_string (" <[%s]:%d>"); | |
4421 | args[1] = host; | |
4422 | args[2] = service; | |
4423 | caller = Fformat (3, args); | |
4424 | } | |
4425 | break; | |
4426 | #endif | |
4427 | ||
e690ca94 KS |
4428 | #ifdef HAVE_LOCAL_SOCKETS |
4429 | case AF_LOCAL: | |
4430 | #endif | |
4431 | default: | |
4432 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4433 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4434 | break; |
4435 | } | |
4436 | ||
4437 | /* Create a new buffer name for this process if it doesn't have a | |
4438 | filter. The new buffer name is based on the buffer name or | |
4439 | process name of the server process concatenated with the caller | |
4440 | identification. */ | |
4441 | ||
4442 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4443 | buffer = Qnil; | |
4444 | else | |
4445 | { | |
4446 | buffer = ps->buffer; | |
4447 | if (!NILP (buffer)) | |
4448 | buffer = Fbuffer_name (buffer); | |
4449 | else | |
4450 | buffer = ps->name; | |
4451 | if (!NILP (buffer)) | |
4452 | { | |
4453 | buffer = concat2 (buffer, caller); | |
4454 | buffer = Fget_buffer_create (buffer); | |
4455 | } | |
4456 | } | |
4457 | ||
4458 | /* Generate a unique name for the new server process. Combine the | |
4459 | server process name with the caller identification. */ | |
4460 | ||
4461 | name = concat2 (ps->name, caller); | |
4462 | proc = make_process (name); | |
4463 | ||
4464 | chan_process[s] = proc; | |
4465 | ||
4466 | #ifdef O_NONBLOCK | |
4467 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4468 | #else | |
4469 | #ifdef O_NDELAY | |
4470 | fcntl (s, F_SETFL, O_NDELAY); | |
4471 | #endif | |
4472 | #endif | |
4473 | ||
4474 | p = XPROCESS (proc); | |
4475 | ||
4476 | /* Build new contact information for this setup. */ | |
4477 | contact = Fcopy_sequence (ps->childp); | |
4478 | contact = Fplist_put (contact, QCserver, Qnil); | |
4479 | contact = Fplist_put (contact, QChost, host); | |
4480 | if (!NILP (service)) | |
4481 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4482 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4483 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4484 | #ifdef HAVE_GETSOCKNAME | |
4485 | len = sizeof saddr; | |
2185db04 | 4486 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4487 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4488 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4489 | #endif | |
4490 | ||
4491 | p->childp = contact; | |
faa7db08 | 4492 | p->plist = Fcopy_sequence (ps->plist); |
d888760c | 4493 | p->type = Qnetwork; |
ac4a7584 | 4494 | |
e690ca94 KS |
4495 | p->buffer = buffer; |
4496 | p->sentinel = ps->sentinel; | |
4497 | p->filter = ps->filter; | |
4498 | p->command = Qnil; | |
6bfd98e7 | 4499 | p->pid = 0; |
60f0fb11 SM |
4500 | p->infd = s; |
4501 | p->outfd = s; | |
e690ca94 KS |
4502 | p->status = Qrun; |
4503 | ||
4504 | /* Client processes for accepted connections are not stopped initially. */ | |
4505 | if (!EQ (p->filter, Qt)) | |
4506 | { | |
4507 | FD_SET (s, &input_wait_mask); | |
4508 | FD_SET (s, &non_keyboard_wait_mask); | |
4509 | } | |
4510 | ||
4511 | if (s > max_process_desc) | |
4512 | max_process_desc = s; | |
4513 | ||
177c0ea7 | 4514 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4515 | This seems to be the proper thing to do, as the coding system |
4516 | of the new process should reflect the settings at the time the | |
4517 | server socket was opened; not the current settings. */ | |
4518 | ||
4519 | p->decode_coding_system = ps->decode_coding_system; | |
4520 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4521 | setup_process_coding_systems (proc); |
e690ca94 KS |
4522 | |
4523 | p->decoding_buf = make_uninit_string (0); | |
60f0fb11 | 4524 | p->decoding_carryover = 0; |
e690ca94 | 4525 | p->encoding_buf = make_uninit_string (0); |
e690ca94 KS |
4526 | |
4527 | p->inherit_coding_system_flag | |
60f0fb11 | 4528 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 KS |
4529 | |
4530 | if (!NILP (ps->log)) | |
4531 | call3 (ps->log, server, proc, | |
4532 | concat3 (build_string ("accept from "), | |
4533 | (STRINGP (host) ? host : build_string ("-")), | |
4534 | build_string ("\n"))); | |
4535 | ||
bed9664a | 4536 | if (!NILP (p->sentinel)) |
177c0ea7 | 4537 | exec_sentinel (proc, |
e690ca94 KS |
4538 | concat3 (build_string ("open from "), |
4539 | (STRINGP (host) ? host : build_string ("-")), | |
4540 | build_string ("\n"))); | |
4541 | } | |
4542 | ||
d0d6b7c5 JB |
4543 | /* This variable is different from waiting_for_input in keyboard.c. |
4544 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4545 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4546 | for user-input when that process-filter was called. |
4547 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4548 | lisp code is being evalled. |
4549 | This is also used in record_asynch_buffer_change. | |
4550 | For that purpose, this must be 0 | |
214d6069 | 4551 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4552 | static int waiting_for_user_input_p; |
4553 | ||
2beb96f9 KS |
4554 | static Lisp_Object |
4555 | wait_reading_process_output_unwind (data) | |
4556 | Lisp_Object data; | |
4557 | { | |
4558 | waiting_for_user_input_p = XINT (data); | |
4559 | return Qnil; | |
4560 | } | |
4561 | ||
c573ae8e | 4562 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4563 | static void |
214d6069 | 4564 | wait_reading_process_output_1 () |
c573ae8e RS |
4565 | { |
4566 | } | |
4567 | ||
e1e541bd KS |
4568 | /* Use a wrapper around select to work around a bug in gdb 5.3. |
4569 | Normally, the wrapper is optimzed away by inlining. | |
4570 | ||
4571 | If emacs is stopped inside select, the gdb backtrace doesn't | |
4572 | show the function which called select, so it is practically | |
4573 | impossible to step through wait_reading_process_output. */ | |
4574 | ||
4575 | #ifndef select | |
4576 | static INLINE int | |
4577 | select_wrapper (n, rfd, wfd, xfd, tmo) | |
4578 | int n; | |
4579 | SELECT_TYPE *rfd, *wfd, *xfd; | |
4580 | EMACS_TIME *tmo; | |
4581 | { | |
4582 | return select (n, rfd, wfd, xfd, tmo); | |
4583 | } | |
4584 | #define select select_wrapper | |
4585 | #endif | |
4586 | ||
d0d6b7c5 JB |
4587 | /* Read and dispose of subprocess output while waiting for timeout to |
4588 | elapse and/or keyboard input to be available. | |
4589 | ||
de6fd4b9 | 4590 | TIME_LIMIT is: |
d0d6b7c5 JB |
4591 | timeout in seconds, or |
4592 | zero for no limit, or | |
4593 | -1 means gobble data immediately available but don't wait for any. | |
4594 | ||
de6fd4b9 RS |
4595 | MICROSECS is: |
4596 | an additional duration to wait, measured in microseconds. | |
4597 | If this is nonzero and time_limit is 0, then the timeout | |
4598 | consists of MICROSECS only. | |
6e4f3667 | 4599 | |
de6fd4b9 | 4600 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4601 | 0 to ignore keyboard input, or |
4602 | 1 to return when input is available, or | |
84aa3ace | 4603 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4604 | the quit handler, or |
d0d6b7c5 | 4605 | |
de6fd4b9 | 4606 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4607 | output that arrives. |
d0d6b7c5 | 4608 | |
b89a415a KS |
4609 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4610 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4611 | |
b89a415a | 4612 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4613 | process. The return value is true if we read some input from |
b89a415a KS |
4614 | that process. |
4615 | ||
4616 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4617 | (suspending output from other processes). A negative value | |
4618 | means don't run any timers either. | |
4619 | ||
e0f24100 | 4620 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4621 | received input from that process before the timeout elapsed. |
e0f24100 | 4622 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4623 | |
dfcf069d | 4624 | int |
214d6069 KS |
4625 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
4626 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
4627 | int time_limit, microsecs, read_kbd, do_display; |
4628 | Lisp_Object wait_for_cell; | |
4629 | struct Lisp_Process *wait_proc; | |
4630 | int just_wait_proc; | |
d0d6b7c5 | 4631 | { |
41d03b9a | 4632 | register int channel, nfds; |
855448dc | 4633 | SELECT_TYPE Available; |
bad49fc7 | 4634 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4635 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4636 | int check_connect; |
4637 | #endif | |
4638 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4639 | int xerrno; |
4640 | Lisp_Object proc; | |
41d03b9a | 4641 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4642 | int wait_channel = -1; |
d0d6b7c5 | 4643 | int got_some_input = 0; |
2beb96f9 | 4644 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4645 | |
4646 | FD_ZERO (&Available); | |
bad49fc7 | 4647 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4648 | FD_ZERO (&Connecting); |
bad49fc7 | 4649 | #endif |
d0d6b7c5 | 4650 | |
b89a415a KS |
4651 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4652 | if (wait_proc != NULL) | |
60f0fb11 | 4653 | wait_channel = wait_proc->infd; |
84aa3ace | 4654 | |
2beb96f9 KS |
4655 | record_unwind_protect (wait_reading_process_output_unwind, |
4656 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4657 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4658 | |
4659 | /* Since we may need to wait several times, | |
4660 | compute the absolute time to return at. */ | |
4661 | if (time_limit || microsecs) | |
4662 | { | |
4663 | EMACS_GET_TIME (end_time); | |
4664 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4665 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4666 | } | |
4667 | ||
d0d6b7c5 JB |
4668 | while (1) |
4669 | { | |
c0239a0b RS |
4670 | int timeout_reduced_for_timers = 0; |
4671 | ||
d0d6b7c5 JB |
4672 | /* If calling from keyboard input, do not quit |
4673 | since we want to return C-g as an input character. | |
4674 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4675 | if (read_kbd >= 0) |
d0d6b7c5 | 4676 | QUIT; |
6b61353c | 4677 | #ifdef SYNC_INPUT |
ef5eb925 | 4678 | else |
c3eff1b0 | 4679 | process_pending_signals (); |
6b61353c | 4680 | #endif |
d0d6b7c5 | 4681 | |
889255b4 | 4682 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4683 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4684 | break; |
4685 | ||
d0d6b7c5 JB |
4686 | /* Compute time from now till when time limit is up */ |
4687 | /* Exit if already run out */ | |
4688 | if (time_limit == -1) | |
4689 | { | |
4690 | /* -1 specified for timeout means | |
4691 | gobble output available now | |
4692 | but don't wait at all. */ | |
4693 | ||
4694 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4695 | } | |
4696 | else if (time_limit || microsecs) | |
4697 | { | |
4698 | EMACS_GET_TIME (timeout); | |
4699 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4700 | if (EMACS_TIME_NEG_P (timeout)) | |
4701 | break; | |
4702 | } | |
4703 | else | |
4704 | { | |
4705 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4706 | } | |
4707 | ||
f854a00b RS |
4708 | /* Normally we run timers here. |
4709 | But not if wait_for_cell; in those cases, | |
4710 | the wait is supposed to be short, | |
4711 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4712 | if (NILP (wait_for_cell) |
b89a415a | 4713 | && just_wait_proc >= 0) |
fb4c3627 | 4714 | { |
c0239a0b | 4715 | EMACS_TIME timer_delay; |
c573ae8e | 4716 | |
9baacf76 | 4717 | do |
c573ae8e | 4718 | { |
9baacf76 | 4719 | int old_timers_run = timers_run; |
c88164fe | 4720 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4721 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4722 | |
9baacf76 | 4723 | timer_delay = timer_check (1); |
a2fab450 GM |
4724 | |
4725 | /* If a timer has run, this might have changed buffers | |
4726 | an alike. Make read_key_sequence aware of that. */ | |
4727 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4728 | && (old_buffer != current_buffer |
4729 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4730 | && waiting_for_user_input_p == -1) |
4731 | record_asynch_buffer_change (); | |
177c0ea7 | 4732 | |
9baacf76 GM |
4733 | if (timers_run != old_timers_run && do_display) |
4734 | /* We must retry, since a timer may have requeued itself | |
4735 | and that could alter the time_delay. */ | |
3007ebfb | 4736 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4737 | else |
4738 | break; | |
c573ae8e | 4739 | } |
9baacf76 | 4740 | while (!detect_input_pending ()); |
c573ae8e | 4741 | |
69645afc | 4742 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4743 | if (read_kbd != 0 |
69645afc RS |
4744 | && requeued_events_pending_p ()) |
4745 | break; | |
4746 | ||
c0239a0b | 4747 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4748 | { |
4749 | EMACS_TIME difference; | |
4750 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4751 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4752 | { |
4753 | timeout = timer_delay; | |
4754 | timeout_reduced_for_timers = 1; | |
4755 | } | |
fb4c3627 | 4756 | } |
4abca5e7 RS |
4757 | /* If time_limit is -1, we are not going to wait at all. */ |
4758 | else if (time_limit != -1) | |
c573ae8e RS |
4759 | { |
4760 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4761 | wait_reading_process_output_1 (); |
c573ae8e | 4762 | } |
fb4c3627 RS |
4763 | } |
4764 | ||
90ab1a81 JB |
4765 | /* Cause C-g and alarm signals to take immediate action, |
4766 | and cause input available signals to zero out timeout. | |
4767 | ||
4768 | It is important that we do this before checking for process | |
4769 | activity. If we get a SIGCHLD after the explicit checks for | |
4770 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4771 | if (read_kbd < 0) |
90ab1a81 JB |
4772 | set_waiting_for_input (&timeout); |
4773 | ||
6be429b1 JB |
4774 | /* If status of something has changed, and no input is |
4775 | available, notify the user of the change right away. After | |
4776 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4777 | timeout to get our attention. */ |
4778 | if (update_tick != process_tick) | |
6be429b1 | 4779 | { |
bad49fc7 KS |
4780 | SELECT_TYPE Atemp; |
4781 | #ifdef NON_BLOCKING_CONNECT | |
4782 | SELECT_TYPE Ctemp; | |
4783 | #endif | |
dd2a17ab | 4784 | |
6be429b1 | 4785 | Atemp = input_wait_mask; |
bad49fc7 KS |
4786 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4787 | ||
6be429b1 | 4788 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
994d9841 NR |
4789 | if ((select (max (max (max_process_desc, max_keyboard_desc), |
4790 | max_gpm_desc) + 1, | |
177c0ea7 | 4791 | &Atemp, |
bad49fc7 | 4792 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4793 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4794 | #else |
4795 | (SELECT_TYPE *)0, | |
4796 | #endif | |
dd2a17ab | 4797 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4798 | <= 0)) |
90ab1a81 JB |
4799 | { |
4800 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4801 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4802 | clear_waiting_for_input (); |
ff6daed3 | 4803 | status_notify (NULL); |
e42bdf01 | 4804 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4805 | } |
6be429b1 JB |
4806 | } |
4807 | ||
dd2a17ab | 4808 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4809 | read whatever data has already been received. */ |
6bfd98e7 | 4810 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4811 | update_status (wait_proc); |
6bfd98e7 | 4812 | if (wait_proc |
dd2a17ab KS |
4813 | && ! EQ (wait_proc->status, Qrun) |
4814 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4815 | { |
215b45e9 | 4816 | int nread, total_nread = 0; |
7ce63188 | 4817 | |
9aa2a7f4 | 4818 | clear_waiting_for_input (); |
7ce63188 RS |
4819 | XSETPROCESS (proc, wait_proc); |
4820 | ||
4821 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4822 | while (wait_proc->infd >= 0) |
215b45e9 | 4823 | { |
60f0fb11 | 4824 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4825 | |
4826 | if (nread == 0) | |
4827 | break; | |
4828 | ||
63136da6 AS |
4829 | if (0 < nread) |
4830 | { | |
891bd142 SM |
4831 | total_nread += nread; |
4832 | got_some_input = 1; | |
4833 | } | |
215b45e9 RS |
4834 | #ifdef EIO |
4835 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4836 | break; |
e1b37c34 GM |
4837 | #endif |
4838 | #ifdef EAGAIN | |
4839 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4840 | break; |
e1b37c34 GM |
4841 | #endif |
4842 | #ifdef EWOULDBLOCK | |
4843 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4844 | break; |
215b45e9 RS |
4845 | #endif |
4846 | } | |
7ce63188 | 4847 | if (total_nread > 0 && do_display) |
3007ebfb | 4848 | redisplay_preserve_echo_area (10); |
7ce63188 | 4849 | |
9aa2a7f4 JB |
4850 | break; |
4851 | } | |
6be429b1 | 4852 | |
d0d6b7c5 JB |
4853 | /* Wait till there is something to do */ |
4854 | ||
b89a415a | 4855 | if (wait_proc && just_wait_proc) |
107ed38d | 4856 | { |
60f0fb11 | 4857 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4858 | break; |
60f0fb11 | 4859 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 KS |
4860 | check_delay = 0; |
4861 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4862 | } |
4863 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4864 | { |
4865 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4866 | check_delay = 0; |
4867 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4868 | } |
a69281ff | 4869 | else |
dd2a17ab | 4870 | { |
b89a415a | 4871 | if (! read_kbd) |
dd2a17ab KS |
4872 | Available = non_keyboard_wait_mask; |
4873 | else | |
4874 | Available = input_wait_mask; | |
bad49fc7 | 4875 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
6b61353c | 4876 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4877 | } |
d0d6b7c5 | 4878 | |
ff11dfa1 | 4879 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4880 | redisplay now, before we start to wait. There is a race |
4881 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4882 | and indicates that a frame is trashed, the select may block |
4883 | displaying a trashed screen. */ | |
5164ee8e | 4884 | if (frame_garbaged && do_display) |
7286affd RS |
4885 | { |
4886 | clear_waiting_for_input (); | |
3007ebfb | 4887 | redisplay_preserve_echo_area (11); |
b89a415a | 4888 | if (read_kbd < 0) |
7efe788e | 4889 | set_waiting_for_input (&timeout); |
7286affd | 4890 | } |
ffd56f97 | 4891 | |
dd2a17ab | 4892 | no_avail = 0; |
b89a415a | 4893 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4894 | { |
4895 | nfds = 0; | |
dd2a17ab | 4896 | no_avail = 1; |
0a65b032 RS |
4897 | } |
4898 | else | |
dd2a17ab | 4899 | { |
bad49fc7 | 4900 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4901 | if (check_connect) |
4902 | Connecting = connect_wait_mask; | |
bad49fc7 | 4903 | #endif |
6b61353c KH |
4904 | |
4905 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4906 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4907 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4908 | read_output_delay, and we are not reading output for a |
4909 | specific wait_channel. It is not executed if | |
4910 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4911 | if (process_output_skip && check_delay > 0) |
4912 | { | |
4913 | int usecs = EMACS_USECS (timeout); | |
4914 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4915 | usecs = READ_OUTPUT_DELAY_MAX; | |
4916 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4917 | { | |
4918 | proc = chan_process[channel]; | |
4919 | if (NILP (proc)) | |
4920 | continue; | |
db853b7a | 4921 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4922 | processes with non-zero read_output_skip. */ |
4923 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4924 | { |
4925 | check_delay--; | |
60f0fb11 | 4926 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4927 | continue; |
4928 | FD_CLR (channel, &Available); | |
60f0fb11 SM |
4929 | XPROCESS (proc)->read_output_skip = 0; |
4930 | if (XPROCESS (proc)->read_output_delay < usecs) | |
4931 | usecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4932 | } |
4933 | } | |
4934 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4935 | process_output_skip = 0; | |
4936 | } | |
4937 | #endif | |
872870b2 JD |
4938 | #if defined (USE_GTK) || defined (HAVE_GCONF) |
4939 | nfds = xg_select | |
4940 | #elif defined (HAVE_NS) | |
63136da6 | 4941 | nfds = ns_select |
edfda783 | 4942 | #else |
63136da6 | 4943 | nfds = select |
edfda783 | 4944 | #endif |
63136da6 | 4945 | (max (max (max_process_desc, max_keyboard_desc), |
994d9841 | 4946 | max_gpm_desc) + 1, |
177c0ea7 | 4947 | &Available, |
bad49fc7 | 4948 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4949 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4950 | #else |
4951 | (SELECT_TYPE *)0, | |
4952 | #endif | |
dd2a17ab KS |
4953 | (SELECT_TYPE *)0, &timeout); |
4954 | } | |
6720a7fb | 4955 | |
d0d6b7c5 JB |
4956 | xerrno = errno; |
4957 | ||
4958 | /* Make C-g and alarm signals set flags again */ | |
4959 | clear_waiting_for_input (); | |
4960 | ||
4961 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4962 | do_pending_window_change (0); |
d0d6b7c5 | 4963 | |
c0239a0b RS |
4964 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4965 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4966 | break; |
4967 | if (nfds < 0) | |
4968 | { | |
4969 | if (xerrno == EINTR) | |
dd2a17ab | 4970 | no_avail = 1; |
d0d6b7c5 JB |
4971 | else if (xerrno == EBADF) |
4972 | { | |
4973 | #ifdef AIX | |
4974 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4975 | the child's closure of the pts gives the parent a SIGHUP, and | |
4976 | the ptc file descriptor is automatically closed, | |
4977 | yielding EBADF here or at select() call above. | |
4978 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4979 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4980 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4981 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4982 | #else |
4983 | abort (); | |
4984 | #endif | |
4985 | } | |
4986 | else | |
68c45bf0 | 4987 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4988 | } |
dd2a17ab KS |
4989 | |
4990 | if (no_avail) | |
4991 | { | |
4992 | FD_ZERO (&Available); | |
bad49fc7 | 4993 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4994 | } |
4995 | ||
5d5beb62 RS |
4996 | #if 0 /* When polling is used, interrupt_input is 0, |
4997 | so get_input_pending should read the input. | |
4998 | So this should not be needed. */ | |
4999 | /* If we are using polling for input, | |
5000 | and we see input available, make it get read now. | |
5001 | Otherwise it might not actually get read for a second. | |
214d6069 | 5002 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 5003 | it might never get read at all if we don't spend much time |
214d6069 | 5004 | outside of wait_reading_process_output. */ |
b89a415a | 5005 | if (read_kbd && interrupt_input |
5d5beb62 RS |
5006 | && keyboard_bit_set (&Available) |
5007 | && input_polling_used ()) | |
5008 | kill (getpid (), SIGALRM); | |
5009 | #endif | |
5010 | ||
d0d6b7c5 JB |
5011 | /* Check for keyboard input */ |
5012 | /* If there is any, return immediately | |
5013 | to give it higher priority than subprocesses */ | |
5014 | ||
b89a415a | 5015 | if (read_kbd != 0) |
6ed6233b | 5016 | { |
a2fab450 | 5017 | int old_timers_run = timers_run; |
c88164fe | 5018 | struct buffer *old_buffer = current_buffer; |
c0323133 | 5019 | Lisp_Object old_window = selected_window; |
a2fab450 | 5020 | int leave = 0; |
177c0ea7 | 5021 | |
5d6c2aa3 | 5022 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
5023 | { |
5024 | swallow_events (do_display); | |
5025 | if (detect_input_pending_run_timers (do_display)) | |
5026 | leave = 1; | |
5027 | } | |
6ed6233b | 5028 | |
a2fab450 GM |
5029 | /* If a timer has run, this might have changed buffers |
5030 | an alike. Make read_key_sequence aware of that. */ | |
5031 | if (timers_run != old_timers_run | |
c88164fe | 5032 | && waiting_for_user_input_p == -1 |
c0323133 GM |
5033 | && (old_buffer != current_buffer |
5034 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
5035 | record_asynch_buffer_change (); |
5036 | ||
5037 | if (leave) | |
5038 | break; | |
177c0ea7 JB |
5039 | } |
5040 | ||
69645afc | 5041 | /* If there is unread keyboard input, also return. */ |
b89a415a | 5042 | if (read_kbd != 0 |
69645afc RS |
5043 | && requeued_events_pending_p ()) |
5044 | break; | |
5045 | ||
77e1b3d4 RS |
5046 | /* If we are not checking for keyboard input now, |
5047 | do process events (but don't run any timers). | |
5048 | This is so that X events will be processed. | |
0c9960e9 | 5049 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
5050 | That would causes delays in pasting selections, for example. |
5051 | ||
5052 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 5053 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
5054 | { |
5055 | swallow_events (do_display); | |
0c9960e9 | 5056 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
5057 | if (detect_input_pending ()) |
5058 | break; | |
5d5beb62 | 5059 | #endif |
0c9960e9 | 5060 | } |
f854a00b | 5061 | |
84aa3ace | 5062 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 5063 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
5064 | break; |
5065 | ||
4746118a | 5066 | #ifdef SIGIO |
5d5beb62 | 5067 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
5068 | go read it. This can happen with X on BSD after logging out. |
5069 | In that case, there really is no input and no SIGIO, | |
5070 | but select says there is input. */ | |
5071 | ||
b89a415a | 5072 | if (read_kbd && interrupt_input |
2601f59e | 5073 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 5074 | kill (getpid (), SIGIO); |
4746118a | 5075 | #endif |
d0d6b7c5 | 5076 | |
d0d6b7c5 JB |
5077 | if (! wait_proc) |
5078 | got_some_input |= nfds > 0; | |
5079 | ||
32676c08 JB |
5080 | /* If checking input just got us a size-change event from X, |
5081 | obey it now if we should. */ | |
b89a415a | 5082 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 5083 | do_pending_window_change (0); |
32676c08 | 5084 | |
a9f2c884 | 5085 | /* Check for data from a process. */ |
dd2a17ab KS |
5086 | if (no_avail || nfds == 0) |
5087 | continue; | |
5088 | ||
a9f2c884 RS |
5089 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
5090 | but this is safer in the short run. */ | |
a69281ff | 5091 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 5092 | { |
a69281ff RS |
5093 | if (FD_ISSET (channel, &Available) |
5094 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
5095 | { |
5096 | int nread; | |
5097 | ||
5098 | /* If waiting for this channel, arrange to return as | |
5099 | soon as no more input to be processed. No more | |
5100 | waiting. */ | |
5101 | if (wait_channel == channel) | |
5102 | { | |
a9f2c884 | 5103 | wait_channel = -1; |
d0d6b7c5 JB |
5104 | time_limit = -1; |
5105 | got_some_input = 1; | |
5106 | } | |
5107 | proc = chan_process[channel]; | |
5108 | if (NILP (proc)) | |
5109 | continue; | |
5110 | ||
e690ca94 KS |
5111 | /* If this is a server stream socket, accept connection. */ |
5112 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
5113 | { | |
5114 | server_accept_connection (proc, channel); | |
5115 | continue; | |
5116 | } | |
5117 | ||
d0d6b7c5 JB |
5118 | /* Read data from the process, starting with our |
5119 | buffered-ahead character if we have one. */ | |
5120 | ||
5121 | nread = read_process_output (proc, channel); | |
5122 | if (nread > 0) | |
5123 | { | |
5124 | /* Since read_process_output can run a filter, | |
5125 | which can call accept-process-output, | |
5126 | don't try to read from any other processes | |
5127 | before doing the select again. */ | |
5128 | FD_ZERO (&Available); | |
5129 | ||
5130 | if (do_display) | |
3007ebfb | 5131 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
5132 | } |
5133 | #ifdef EWOULDBLOCK | |
5134 | else if (nread == -1 && errno == EWOULDBLOCK) | |
5135 | ; | |
0b75e9a4 | 5136 | #endif |
89d7280d RS |
5137 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
5138 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
5139 | #ifdef O_NONBLOCK |
5140 | else if (nread == -1 && errno == EAGAIN) | |
5141 | ; | |
5142 | #else | |
5143 | #ifdef O_NDELAY | |
5144 | else if (nread == -1 && errno == EAGAIN) | |
5145 | ; | |
5146 | /* Note that we cannot distinguish between no input | |
5147 | available now and a closed pipe. | |
5148 | With luck, a closed pipe will be accompanied by | |
5149 | subprocess termination and SIGCHLD. */ | |
d888760c | 5150 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 5151 | ; |
4740825c KS |
5152 | #endif /* O_NDELAY */ |
5153 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
5154 | #ifdef HAVE_PTYS |
5155 | /* On some OSs with ptys, when the process on one end of | |
5156 | a pty exits, the other end gets an error reading with | |
5157 | errno = EIO instead of getting an EOF (0 bytes read). | |
5158 | Therefore, if we get an error reading and errno = | |
5159 | EIO, just continue, because the child process has | |
5160 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
5161 | get a SIGCHLD). |
5162 | ||
5163 | However, it has been known to happen that the SIGCHLD | |
4740825c | 5164 | got lost. So raise the signal again just in case. |
5651af6d | 5165 | It can't hurt. */ |
d0d6b7c5 | 5166 | else if (nread == -1 && errno == EIO) |
4740825c | 5167 | { |
a70d5371 | 5168 | /* Clear the descriptor now, so we only raise the |
42371deb | 5169 | signal once. Don't do this if `process' is only |
a70d5371 NR |
5170 | a pty. */ |
5171 | if (XPROCESS (proc)->pid != -2) | |
5172 | { | |
5173 | FD_CLR (channel, &input_wait_mask); | |
5174 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4740825c | 5175 | |
a70d5371 NR |
5176 | kill (getpid (), SIGCHLD); |
5177 | } | |
4740825c KS |
5178 | } |
5179 | #endif /* HAVE_PTYS */ | |
ffd56f97 JB |
5180 | /* If we can detect process termination, don't consider the process |
5181 | gone just because its pipe is closed. */ | |
d0d6b7c5 | 5182 | #ifdef SIGCHLD |
d888760c | 5183 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
5184 | ; |
5185 | #endif | |
5186 | else | |
5187 | { | |
5188 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 5189 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 5190 | deactivate_process (proc); |
6bfd98e7 | 5191 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 JB |
5192 | update_status (XPROCESS (proc)); |
5193 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
5194 | XPROCESS (proc)->status | |
5195 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5196 | } | |
5197 | } | |
177c0ea7 | 5198 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
5199 | if (check_connect && FD_ISSET (channel, &Connecting) |
5200 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
5201 | { |
5202 | struct Lisp_Process *p; | |
dd2a17ab KS |
5203 | |
5204 | FD_CLR (channel, &connect_wait_mask); | |
5205 | if (--num_pending_connects < 0) | |
5206 | abort (); | |
5207 | ||
5208 | proc = chan_process[channel]; | |
5209 | if (NILP (proc)) | |
5210 | continue; | |
5211 | ||
5212 | p = XPROCESS (proc); | |
5213 | ||
5214 | #ifdef GNU_LINUX | |
5215 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 5216 | So only use it on systems where it is known to work. */ |
dd2a17ab | 5217 | { |
e690ca94 | 5218 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
5219 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
5220 | xerrno = errno; | |
5221 | } | |
5222 | #else | |
44c887be PJ |
5223 | { |
5224 | struct sockaddr pname; | |
5225 | int pnamelen = sizeof(pname); | |
5226 | ||
5227 | /* If connection failed, getpeername will fail. */ | |
5228 | xerrno = 0; | |
5229 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
5230 | { | |
5231 | /* Obtain connect failure code through error slippage. */ | |
5232 | char dummy; | |
dd2a17ab | 5233 | xerrno = errno; |
44c887be PJ |
5234 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
5235 | xerrno = errno; | |
5236 | } | |
5237 | } | |
dd2a17ab KS |
5238 | #endif |
5239 | if (xerrno) | |
5240 | { | |
60f0fb11 | 5241 | p->tick = ++process_tick; |
dd2a17ab KS |
5242 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); |
5243 | deactivate_process (proc); | |
5244 | } | |
5245 | else | |
5246 | { | |
5247 | p->status = Qrun; | |
5248 | /* Execute the sentinel here. If we had relied on | |
5249 | status_notify to do it later, it will read input | |
5250 | from the process before calling the sentinel. */ | |
5251 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 5252 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 5253 | { |
60f0fb11 SM |
5254 | FD_SET (p->infd, &input_wait_mask); |
5255 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
5256 | } |
5257 | } | |
5258 | } | |
5259 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
5260 | } /* end for each file descriptor */ |
5261 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 5262 | |
2beb96f9 | 5263 | unbind_to (count, Qnil); |
d430ee71 | 5264 | |
ffd56f97 JB |
5265 | /* If calling from keyboard input, do not quit |
5266 | since we want to return C-g as an input character. | |
5267 | Otherwise, do pending quit if requested. */ | |
b89a415a | 5268 | if (read_kbd >= 0) |
ffd56f97 JB |
5269 | { |
5270 | /* Prevent input_pending from remaining set if we quit. */ | |
5271 | clear_input_pending (); | |
5272 | QUIT; | |
5273 | } | |
efa2a55c | 5274 | |
d0d6b7c5 JB |
5275 | return got_some_input; |
5276 | } | |
5277 | \f | |
3b9a3dfa RS |
5278 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
5279 | ||
5280 | static Lisp_Object | |
5281 | read_process_output_call (fun_and_args) | |
5282 | Lisp_Object fun_and_args; | |
5283 | { | |
70949dac | 5284 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5285 | } |
5286 | ||
5287 | static Lisp_Object | |
5288 | read_process_output_error_handler (error) | |
5289 | Lisp_Object error; | |
5290 | { | |
5291 | cmd_error_internal (error, "error in process filter: "); | |
5292 | Vinhibit_quit = Qt; | |
5293 | update_echo_area (); | |
833ba342 | 5294 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5295 | return Qt; |
3b9a3dfa RS |
5296 | } |
5297 | ||
d0d6b7c5 JB |
5298 | /* Read pending output from the process channel, |
5299 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5300 | Yield number of decoded characters read. |
d0d6b7c5 | 5301 | |
116c423c | 5302 | This function reads at most 4096 characters. |
d0d6b7c5 | 5303 | If you want to read all available subprocess output, |
0fa1789e KH |
5304 | you must call it repeatedly until it returns zero. |
5305 | ||
5306 | The characters read are decoded according to PROC's coding-system | |
5307 | for decoding. */ | |
d0d6b7c5 | 5308 | |
ff6daed3 | 5309 | static int |
d0d6b7c5 JB |
5310 | read_process_output (proc, channel) |
5311 | Lisp_Object proc; | |
5312 | register int channel; | |
5313 | { | |
8f924df7 | 5314 | register int nbytes; |
d0d6b7c5 | 5315 | char *chars; |
d0d6b7c5 | 5316 | register Lisp_Object outstream; |
d0d6b7c5 JB |
5317 | register struct Lisp_Process *p = XPROCESS (proc); |
5318 | register int opoint; | |
c7580538 | 5319 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5320 | int carryover = p->decoding_carryover; |
116c423c | 5321 | int readmax = 4096; |
d0d6b7c5 | 5322 | |
e690ca94 | 5323 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
5324 | if (carryover) |
5325 | /* See the comment above. */ | |
d5db4077 | 5326 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 5327 | |
e690ca94 KS |
5328 | #ifdef DATAGRAM_SOCKETS |
5329 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5330 | if (DATAGRAM_CHAN_P (channel)) | |
5331 | { | |
5332 | int len = datagram_address[channel].len; | |
39b1da20 | 5333 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5334 | 0, datagram_address[channel].sa, &len); |
5335 | } | |
5336 | else | |
5337 | #endif | |
d0d6b7c5 | 5338 | if (proc_buffered_char[channel] < 0) |
6b61353c | 5339 | { |
39b1da20 | 5340 | nbytes = emacs_read (channel, chars + carryover, readmax); |
6b61353c | 5341 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5342 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5343 | { |
60f0fb11 | 5344 | int delay = p->read_output_delay; |
6b61353c KH |
5345 | if (nbytes < 256) |
5346 | { | |
5347 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5348 | { | |
5349 | if (delay == 0) | |
5350 | process_output_delay_count++; | |
5351 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5352 | } | |
5353 | } | |
39b1da20 | 5354 | else if (delay > 0 && (nbytes == readmax)) |
6b61353c KH |
5355 | { |
5356 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5357 | if (delay == 0) | |
5358 | process_output_delay_count--; | |
5359 | } | |
60f0fb11 | 5360 | p->read_output_delay = delay; |
6b61353c KH |
5361 | if (delay) |
5362 | { | |
60f0fb11 | 5363 | p->read_output_skip = 1; |
6b61353c KH |
5364 | process_output_skip = 1; |
5365 | } | |
5366 | } | |
5367 | #endif | |
5368 | } | |
d0d6b7c5 JB |
5369 | else |
5370 | { | |
ed7a4b2d | 5371 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 5372 | proc_buffered_char[channel] = -1; |
39b1da20 | 5373 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
5374 | if (nbytes < 0) |
5375 | nbytes = 1; | |
d0d6b7c5 | 5376 | else |
1d2fc612 | 5377 | nbytes = nbytes + 1; |
d0d6b7c5 | 5378 | } |
d0d6b7c5 | 5379 | |
60f0fb11 | 5380 | p->decoding_carryover = 0; |
ca65341e | 5381 | |
ed7a4b2d | 5382 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5383 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5384 | if (nbytes <= 0) |
5385 | { | |
5386 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5387 | return nbytes; | |
5388 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5389 | } | |
d0d6b7c5 | 5390 | |
1d2fc612 | 5391 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5392 | nbytes += carryover; |
0fa1789e | 5393 | |
1d2fc612 | 5394 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
5395 | outstream = p->filter; |
5396 | if (!NILP (outstream)) | |
5397 | { | |
177c0ea7 | 5398 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
5399 | hitting ^G when a filter happens to be running won't screw |
5400 | it up. */ | |
aed13378 | 5401 | int count = SPECPDL_INDEX (); |
30c78175 | 5402 | Lisp_Object odeactivate; |
dfc21838 | 5403 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 5404 | Lisp_Object text; |
4da2f5be | 5405 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5406 | int waiting = waiting_for_user_input_p; |
30c78175 | 5407 | |
dfc21838 RS |
5408 | /* No need to gcpro these, because all we do with them later |
5409 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 5410 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
5411 | XSETBUFFER (obuffer, current_buffer); |
5412 | okeymap = current_buffer->keymap; | |
30c78175 | 5413 | |
d0d6b7c5 | 5414 | specbind (Qinhibit_quit, Qt); |
6545aada | 5415 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5416 | |
4da2f5be RS |
5417 | /* In case we get recursively called, |
5418 | and we already saved the match data nonrecursively, | |
5419 | save the same match data in safely recursive fashion. */ | |
5420 | if (outer_running_asynch_code) | |
5421 | { | |
5422 | Lisp_Object tem; | |
5423 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5424 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5425 | restore_search_regs (); | |
5426 | record_unwind_save_match_data (); | |
5427 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5428 | } |
5429 | ||
5430 | /* For speed, if a search happens within this code, | |
5431 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5432 | running_asynch_code = 1; |
4da2f5be | 5433 | |
5bbf78c1 KH |
5434 | decode_coding_c_string (coding, chars, nbytes, Qt); |
5435 | text = coding->dst_object; | |
5bbf78c1 | 5436 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5437 | /* A new coding system might be found. */ |
5bbf78c1 | 5438 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5439 | { |
5bbf78c1 | 5440 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d KH |
5441 | |
5442 | /* Don't call setup_coding_system for | |
5443 | proc_decode_coding_system[channel] here. It is done in | |
5444 | detect_coding called via decode_coding above. */ | |
5445 | ||
5446 | /* If a coding system for encoding is not yet decided, we set | |
5447 | it as the same as coding-system for decoding. | |
5448 | ||
5449 | But, before doing that we must check if | |
5450 | proc_encode_coding_system[p->outfd] surely points to a | |
5451 | valid memory because p->outfd will be changed once EOF is | |
5452 | sent to the process. */ | |
5453 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5454 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5455 | { |
76d812bb KH |
5456 | p->encode_coding_system |
5457 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5458 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5459 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5460 | } |
5461 | } | |
51c6067d | 5462 | |
dd8c7a53 KH |
5463 | if (coding->carryover_bytes > 0) |
5464 | { | |
04961398 KH |
5465 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5466 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
8f924df7 | 5467 | bcopy (coding->carryover, SDATA (p->decoding_buf), |
dd8c7a53 | 5468 | coding->carryover_bytes); |
8c406a9b | 5469 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5470 | } |
e430e5ba | 5471 | if (SBYTES (text) > 0) |
dd97db06 KH |
5472 | internal_condition_case_1 (read_process_output_call, |
5473 | Fcons (outstream, | |
5474 | Fcons (proc, Fcons (text, Qnil))), | |
5475 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5476 | read_process_output_error_handler); | |
4da2f5be RS |
5477 | |
5478 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5479 | restore_search_regs (); |
4da2f5be | 5480 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5481 | |
592ce97f | 5482 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5483 | Vdeactivate_mark = odeactivate; |
5484 | ||
bbce7d72 RS |
5485 | /* Restore waiting_for_user_input_p as it was |
5486 | when we were called, in case the filter clobbered it. */ | |
5487 | waiting_for_user_input_p = waiting; | |
5488 | ||
7973cfa8 RS |
5489 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5490 | because we might have changed minor modes or other things | |
5491 | that affect key bindings. */ | |
dfc21838 RS |
5492 | if (! EQ (Fcurrent_buffer (), obuffer) |
5493 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5494 | #endif |
927e08be RS |
5495 | /* But do it only if the caller is actually going to read events. |
5496 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5497 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5498 | if (waiting_for_user_input_p == -1) |
5499 | record_asynch_buffer_change (); | |
d72534ba | 5500 | |
2ea6d561 | 5501 | unbind_to (count, Qnil); |
e430e5ba | 5502 | return nbytes; |
d0d6b7c5 JB |
5503 | } |
5504 | ||
5505 | /* If no filter, write into buffer if it isn't dead. */ | |
5506 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
5507 | { | |
b0310da4 | 5508 | Lisp_Object old_read_only; |
12ca5cdf | 5509 | int old_begv, old_zv; |
d8a2934e | 5510 | int old_begv_byte, old_zv_byte; |
30c78175 | 5511 | Lisp_Object odeactivate; |
d8a2934e RS |
5512 | int before, before_byte; |
5513 | int opoint_byte; | |
ed7a4b2d | 5514 | Lisp_Object text; |
926b7e5e | 5515 | struct buffer *b; |
59c4c60f | 5516 | int count = SPECPDL_INDEX (); |
30c78175 RS |
5517 | |
5518 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 | 5519 | |
59c4c60f | 5520 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
d0d6b7c5 | 5521 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5522 | opoint = PT; |
d8a2934e | 5523 | opoint_byte = PT_BYTE; |
b0310da4 | 5524 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
5525 | old_begv = BEGV; |
5526 | old_zv = ZV; | |
d8a2934e RS |
5527 | old_begv_byte = BEGV_BYTE; |
5528 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
5529 | |
5530 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
5531 | |
5532 | /* Insert new output into buffer | |
5533 | at the current end-of-output marker, | |
5534 | thus preserving logical ordering of input and output. */ | |
5535 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5536 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5537 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5538 | ZV_BYTE)); | |
d0d6b7c5 | 5539 | else |
d8a2934e | 5540 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5541 | before = PT; |
d8a2934e | 5542 | before_byte = PT_BYTE; |
b0310da4 JB |
5543 | |
5544 | /* If the output marker is outside of the visible region, save | |
5545 | the restriction and widen. */ | |
6ec8bbd2 | 5546 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5547 | Fwiden (); |
5548 | ||
5bbf78c1 KH |
5549 | decode_coding_c_string (coding, chars, nbytes, Qt); |
5550 | text = coding->dst_object; | |
5551 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5552 | /* A new coding system might be found. See the comment in the |
5553 | similar code in the previous `if' block. */ | |
5bbf78c1 | 5554 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5555 | { |
5bbf78c1 | 5556 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d | 5557 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5558 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5559 | { |
76d812bb KH |
5560 | p->encode_coding_system |
5561 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5562 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5563 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5564 | } |
5565 | } | |
dd8c7a53 KH |
5566 | if (coding->carryover_bytes > 0) |
5567 | { | |
04961398 KH |
5568 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5569 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
8f924df7 | 5570 | bcopy (coding->carryover, SDATA (p->decoding_buf), |
dd8c7a53 | 5571 | coding->carryover_bytes); |
8c406a9b | 5572 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5573 | } |
d69864bf KH |
5574 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5575 | if (NILP (current_buffer->enable_multibyte_characters) | |
5576 | != ! STRING_MULTIBYTE (text)) | |
5577 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5578 | ? Fstring_as_unibyte (text) |
03f04413 | 5579 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5580 | /* Insert before markers in case we are inserting where |
5581 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5582 | insert_from_string_before_markers (text, 0, 0, |
5583 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5584 | |
926b7e5e GM |
5585 | /* Make sure the process marker's position is valid when the |
5586 | process buffer is changed in the signal_after_change above. | |
5587 | W3 is known to do that. */ | |
5588 | if (BUFFERP (p->buffer) | |
5589 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5590 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5591 | else | |
5592 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5593 | |
d0d6b7c5 JB |
5594 | update_mode_lines++; |
5595 | ||
12ca5cdf RS |
5596 | /* Make sure opoint and the old restrictions |
5597 | float ahead of any new text just as point would. */ | |
5598 | if (opoint >= before) | |
d8a2934e RS |
5599 | { |
5600 | opoint += PT - before; | |
5601 | opoint_byte += PT_BYTE - before_byte; | |
5602 | } | |
12ca5cdf | 5603 | if (old_begv > before) |
d8a2934e RS |
5604 | { |
5605 | old_begv += PT - before; | |
5606 | old_begv_byte += PT_BYTE - before_byte; | |
5607 | } | |
12ca5cdf | 5608 | if (old_zv >= before) |
d8a2934e RS |
5609 | { |
5610 | old_zv += PT - before; | |
5611 | old_zv_byte += PT_BYTE - before_byte; | |
5612 | } | |
12ca5cdf | 5613 | |
b0310da4 | 5614 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5615 | if (old_begv != BEGV || old_zv != ZV) |
5616 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5617 | |
592ce97f | 5618 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5619 | Vdeactivate_mark = odeactivate; |
5620 | ||
b0310da4 | 5621 | current_buffer->read_only = old_read_only; |
d8a2934e | 5622 | SET_PT_BOTH (opoint, opoint_byte); |
59c4c60f | 5623 | unbind_to (count, Qnil); |
d0d6b7c5 | 5624 | } |
1d2fc612 | 5625 | return nbytes; |
d0d6b7c5 JB |
5626 | } |
5627 | ||
5628 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
5629 | 0, 0, 0, | |
f3d9532b | 5630 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
fdb82f93 PJ |
5631 | This is intended for use by asynchronous process output filters and sentinels. */) |
5632 | () | |
d0d6b7c5 | 5633 | { |
8b4d685f | 5634 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
5635 | } |
5636 | \f | |
5637 | /* Sending data to subprocess */ | |
5638 | ||
5639 | jmp_buf send_process_frame; | |
0daad115 | 5640 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5641 | |
5642 | SIGTYPE | |
5643 | send_process_trap () | |
5644 | { | |
333f1b6f | 5645 | SIGNAL_THREAD_CHECK (SIGPIPE); |
c8f44005 | 5646 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5647 | longjmp (send_process_frame, 1); |
5648 | } | |
5649 | ||
4556b700 RS |
5650 | /* Send some data to process PROC. |
5651 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5652 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5653 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5654 | |
a92e4183 KH |
5655 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5656 | for encoding before it is sent. | |
1fb0098c GM |
5657 | |
5658 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5659 | |
ff6daed3 | 5660 | static void |
4556b700 | 5661 | send_process (proc, buf, len, object) |
ecd1f654 | 5662 | volatile Lisp_Object proc; |
0daad115 GM |
5663 | unsigned char *volatile buf; |
5664 | volatile int len; | |
5665 | volatile Lisp_Object object; | |
d0d6b7c5 | 5666 | { |
ecd1f654 | 5667 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5668 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5669 | int rv; |
0fa1789e | 5670 | struct coding_system *coding; |
347f3cd3 | 5671 | struct gcpro gcpro1; |
41c4895c | 5672 | SIGTYPE (*volatile old_sigpipe) (); |
6044e593 | 5673 | |
347f3cd3 | 5674 | GCPRO1 (object); |
d0d6b7c5 | 5675 | |
6bfd98e7 | 5676 | if (p->raw_status_new) |
6b61353c KH |
5677 | update_status (p); |
5678 | if (! EQ (p->status, Qrun)) | |
5679 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5680 | if (p->outfd < 0) |
6b61353c | 5681 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5682 | |
60f0fb11 | 5683 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5684 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5685 | |
ed7a4b2d KH |
5686 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5687 | || (BUFFERP (object) | |
a92e4183 KH |
5688 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5689 | || EQ (object, Qt)) | |
278bfdd6 | 5690 | { |
6b61353c | 5691 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
278bfdd6 KH |
5692 | /* The coding system for encoding was changed to raw-text |
5693 | because we sent a unibyte text previously. Now we are | |
5694 | sending a multibyte text, thus we must encode it by the | |
6b61353c KH |
5695 | original coding system specified for the current process. */ |
5696 | setup_coding_system (p->encode_coding_system, coding); | |
e08bbb84 | 5697 | coding->src_multibyte = 1; |
278bfdd6 KH |
5698 | } |
5699 | else | |
5700 | { | |
a92e4183 KH |
5701 | /* For sending a unibyte text, character code conversion should |
5702 | not take place but EOL conversion should. So, setup raw-text | |
5703 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5704 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5705 | { |
5706 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5707 | { | |
5708 | /* But, before changing the coding, we must flush out data. */ | |
5709 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5710 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5711 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5712 | } |
5bbf78c1 KH |
5713 | setup_coding_system (raw_text_coding_system |
5714 | (Vlast_coding_system_used), | |
5715 | coding); | |
e08bbb84 | 5716 | coding->src_multibyte = 0; |
a92e4183 | 5717 | } |
278bfdd6 | 5718 | } |
a4a37e65 KH |
5719 | coding->dst_multibyte = 0; |
5720 | ||
ed7a4b2d | 5721 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5722 | { |
5bbf78c1 | 5723 | coding->dst_object = Qt; |
ed7a4b2d | 5724 | if (BUFFERP (object)) |
0fa1789e | 5725 | { |
5bbf78c1 KH |
5726 | int from_byte, from, to; |
5727 | int save_pt, save_pt_byte; | |
5728 | struct buffer *cur = current_buffer; | |
5729 | ||
5730 | set_buffer_internal (XBUFFER (object)); | |
5731 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5732 | ||
5733 | from_byte = PTR_BYTE_POS (buf); | |
5734 | from = BYTE_TO_CHAR (from_byte); | |
5735 | to = BYTE_TO_CHAR (from_byte + len); | |
5736 | TEMP_SET_PT_BOTH (from, from_byte); | |
5737 | encode_coding_object (coding, object, from, from_byte, | |
5738 | to, from_byte + len, Qt); | |
5739 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5740 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5741 | } |
5742 | else if (STRINGP (object)) | |
5743 | { | |
550c8289 KH |
5744 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5745 | SBYTES (object), Qt); | |
0fa1789e | 5746 | } |
5bbf78c1 | 5747 | else |
452294c2 | 5748 | { |
5bbf78c1 KH |
5749 | coding->dst_object = make_unibyte_string (buf, len); |
5750 | coding->produced = len; | |
452294c2 | 5751 | } |
ed7a4b2d | 5752 | |
e7fbaa65 | 5753 | len = coding->produced; |
347f3cd3 AS |
5754 | object = coding->dst_object; |
5755 | buf = SDATA (object); | |
0fa1789e | 5756 | } |
d0d6b7c5 | 5757 | |
4556b700 RS |
5758 | if (pty_max_bytes == 0) |
5759 | { | |
5760 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5761 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5762 | if (pty_max_bytes < 0) |
5763 | pty_max_bytes = 250; | |
5764 | #else | |
5765 | pty_max_bytes = 250; | |
5766 | #endif | |
5767 | /* Deduct one, to leave space for the eof. */ | |
5768 | pty_max_bytes--; | |
5769 | } | |
5770 | ||
0daad115 GM |
5771 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5772 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5773 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5774 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5775 | { |
5776 | process_sent_to = proc; | |
5777 | while (len > 0) | |
5778 | { | |
5779 | int this = len; | |
93b4f699 | 5780 | |
0daad115 GM |
5781 | /* Decide how much data we can send in one batch. |
5782 | Long lines need to be split into multiple batches. */ | |
60f0fb11 | 5783 | if (p->pty_flag) |
0daad115 | 5784 | { |
c0ec53ad | 5785 | /* Starting this at zero is always correct when not the first |
63136da6 | 5786 | iteration because the previous iteration ended by sending C-d. |
0daad115 GM |
5787 | It may not be correct for the first iteration |
5788 | if a partial line was sent in a separate send_process call. | |
5789 | If that proves worth handling, we need to save linepos | |
5790 | in the process object. */ | |
5791 | int linepos = 0; | |
5792 | unsigned char *ptr = (unsigned char *) buf; | |
5793 | unsigned char *end = (unsigned char *) buf + len; | |
5794 | ||
5795 | /* Scan through this text for a line that is too long. */ | |
5796 | while (ptr != end && linepos < pty_max_bytes) | |
5797 | { | |
5798 | if (*ptr == '\n') | |
5799 | linepos = 0; | |
5800 | else | |
5801 | linepos++; | |
5802 | ptr++; | |
5803 | } | |
5804 | /* If we found one, break the line there | |
5805 | and put in a C-d to force the buffer through. */ | |
5806 | this = ptr - buf; | |
5807 | } | |
93b4f699 | 5808 | |
0daad115 GM |
5809 | /* Send this batch, using one or more write calls. */ |
5810 | while (this > 0) | |
5811 | { | |
60f0fb11 | 5812 | int outfd = p->outfd; |
0daad115 | 5813 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5814 | #ifdef DATAGRAM_SOCKETS |
5815 | if (DATAGRAM_CHAN_P (outfd)) | |
5816 | { | |
5817 | rv = sendto (outfd, (char *) buf, this, | |
5818 | 0, datagram_address[outfd].sa, | |
5819 | datagram_address[outfd].len); | |
5820 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5821 | { |
5822 | signal (SIGPIPE, old_sigpipe); | |
5823 | report_file_error ("sending datagram", | |
5824 | Fcons (proc, Qnil)); | |
5825 | } | |
e690ca94 KS |
5826 | } |
5827 | else | |
5828 | #endif | |
6b61353c KH |
5829 | { |
5830 | rv = emacs_write (outfd, (char *) buf, this); | |
5831 | #ifdef ADAPTIVE_READ_BUFFERING | |
60f0fb11 SM |
5832 | if (p->read_output_delay > 0 |
5833 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5834 | { |
60f0fb11 | 5835 | p->read_output_delay = 0; |
6b61353c | 5836 | process_output_delay_count--; |
60f0fb11 | 5837 | p->read_output_skip = 0; |
6b61353c KH |
5838 | } |
5839 | #endif | |
5840 | } | |
0daad115 | 5841 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5842 | |
0daad115 GM |
5843 | if (rv < 0) |
5844 | { | |
5845 | if (0 | |
d0d6b7c5 | 5846 | #ifdef EWOULDBLOCK |
0daad115 | 5847 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5848 | #endif |
5849 | #ifdef EAGAIN | |
0daad115 | 5850 | || errno == EAGAIN |
d0d6b7c5 | 5851 | #endif |
0daad115 | 5852 | ) |
177c0ea7 | 5853 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5854 | that may allow the program |
5855 | to finish doing output and read more. */ | |
5856 | { | |
0daad115 | 5857 | int offset = 0; |
4556b700 | 5858 | |
3433b6bd | 5859 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5860 | /* A gross hack to work around a bug in FreeBSD. |
5861 | In the following sequence, read(2) returns | |
5862 | bogus data: | |
5863 | ||
5864 | write(2) 1022 bytes | |
5865 | write(2) 954 bytes, get EAGAIN | |
5866 | read(2) 1024 bytes in process_read_output | |
5867 | read(2) 11 bytes in process_read_output | |
5868 | ||
5869 | That is, read(2) returns more bytes than have | |
5870 | ever been written successfully. The 1033 bytes | |
5871 | read are the 1022 bytes written successfully | |
5872 | after processing (for example with CRs added if | |
5873 | the terminal is set up that way which it is | |
5874 | here). The same bytes will be seen again in a | |
5875 | later read(2), without the CRs. */ | |
177c0ea7 | 5876 | |
0daad115 GM |
5877 | if (errno == EAGAIN) |
5878 | { | |
5879 | int flags = FWRITE; | |
60f0fb11 | 5880 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5881 | } |
3433b6bd | 5882 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5883 | |
0daad115 GM |
5884 | /* Running filters might relocate buffers or strings. |
5885 | Arrange to relocate BUF. */ | |
347f3cd3 | 5886 | if (BUFFERP (object)) |
0daad115 GM |
5887 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5888 | else if (STRINGP (object)) | |
d5db4077 | 5889 | offset = buf - SDATA (object); |
0daad115 | 5890 | |
f3e6605c | 5891 | #ifdef EMACS_HAS_USECS |
214d6069 | 5892 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5893 | #else |
214d6069 | 5894 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5895 | #endif |
4556b700 | 5896 | |
347f3cd3 | 5897 | if (BUFFERP (object)) |
0daad115 GM |
5898 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); |
5899 | else if (STRINGP (object)) | |
d5db4077 | 5900 | buf = offset + SDATA (object); |
4556b700 | 5901 | |
0daad115 GM |
5902 | rv = 0; |
5903 | } | |
5904 | else | |
5905 | /* This is a real error. */ | |
5906 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5907 | } | |
5908 | buf += rv; | |
5909 | len -= rv; | |
5910 | this -= rv; | |
5911 | } | |
f76475ad | 5912 | |
d888760c | 5913 | /* If we sent just part of the string, put in an EOF (C-d) |
0daad115 GM |
5914 | to force it through, before we send the rest. */ |
5915 | if (len > 0) | |
5916 | Fprocess_send_eof (proc); | |
5917 | } | |
5918 | } | |
d0d6b7c5 JB |
5919 | else |
5920 | { | |
0ff69270 | 5921 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5922 | proc = process_sent_to; |
6b61353c | 5923 | p = XPROCESS (proc); |
6bfd98e7 | 5924 | p->raw_status_new = 0; |
6b61353c | 5925 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); |
60f0fb11 | 5926 | p->tick = ++process_tick; |
d0d6b7c5 | 5927 | deactivate_process (proc); |
6b61353c | 5928 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5929 | } |
6044e593 RS |
5930 | |
5931 | UNGCPRO; | |
d0d6b7c5 JB |
5932 | } |
5933 | ||
5934 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5935 | 3, 3, 0, |
5936 | doc: /* Send current contents of region as input to PROCESS. | |
5937 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5938 | nil, indicating the current buffer's process. | |
5939 | Called from program, takes three arguments, PROCESS, START and END. | |
5940 | If the region is more than 500 characters long, | |
5941 | it is sent in several bunches. This may happen even for shorter regions. | |
5942 | Output from processes can arrive in between bunches. */) | |
5943 | (process, start, end) | |
d0d6b7c5 JB |
5944 | Lisp_Object process, start, end; |
5945 | { | |
5946 | Lisp_Object proc; | |
1b234f64 | 5947 | int start1, end1; |
d0d6b7c5 JB |
5948 | |
5949 | proc = get_process (process); | |
5950 | validate_region (&start, &end); | |
1b234f64 KH |
5951 | |
5952 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5953 | move_gap (XINT (start)); | |
5954 | ||
5955 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5956 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5957 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
5958 | Fcurrent_buffer ()); | |
5959 | ||
d0d6b7c5 JB |
5960 | return Qnil; |
5961 | } | |
5962 | ||
5963 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5964 | 2, 2, 0, |
5965 | doc: /* Send PROCESS the contents of STRING as input. | |
5966 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5967 | nil, indicating the current buffer's process. | |
5968 | If STRING is more than 500 characters long, | |
5969 | it is sent in several bunches. This may happen even for shorter strings. | |
5970 | Output from processes can arrive in between bunches. */) | |
5971 | (process, string) | |
d0d6b7c5 JB |
5972 | Lisp_Object process, string; |
5973 | { | |
5974 | Lisp_Object proc; | |
b7826503 | 5975 | CHECK_STRING (string); |
d0d6b7c5 | 5976 | proc = get_process (process); |
1b234f64 KH |
5977 | send_process (proc, SDATA (string), |
5978 | SBYTES (string), string); | |
d0d6b7c5 JB |
5979 | return Qnil; |
5980 | } | |
5981 | \f | |
16782258 JD |
5982 | /* Return the foreground process group for the tty/pty that |
5983 | the process P uses. */ | |
5984 | static int | |
5985 | emacs_get_tty_pgrp (p) | |
5986 | struct Lisp_Process *p; | |
5987 | { | |
5988 | int gid = -1; | |
5989 | ||
f3d9532b | 5990 | #ifdef TIOCGPGRP |
60f0fb11 | 5991 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5992 | { |
5993 | int fd; | |
5994 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5995 | master side. Try the slave side. */ | |
eef60308 | 5996 | fd = emacs_open (SDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5997 | |
5998 | if (fd != -1) | |
5999 | { | |
6000 | ioctl (fd, TIOCGPGRP, &gid); | |
6001 | emacs_close (fd); | |
6002 | } | |
6003 | } | |
6004 | #endif /* defined (TIOCGPGRP ) */ | |
6005 | ||
6006 | return gid; | |
6007 | } | |
6008 | ||
b81ea5ef RS |
6009 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
6010 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
6011 | doc: /* Return t if PROCESS has given the terminal to a child. |
6012 | If the operating system does not make it possible to find out, | |
6013 | return t unconditionally. */) | |
6014 | (process) | |
b81ea5ef RS |
6015 | Lisp_Object process; |
6016 | { | |
6017 | /* Initialize in case ioctl doesn't exist or gives an error, | |
6018 | in a way that will cause returning t. */ | |
16782258 | 6019 | int gid; |
b81ea5ef RS |
6020 | Lisp_Object proc; |
6021 | struct Lisp_Process *p; | |
6022 | ||
6023 | proc = get_process (process); | |
6024 | p = XPROCESS (proc); | |
6025 | ||
d888760c | 6026 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 6027 | error ("Process %s is not a subprocess", |
d5db4077 | 6028 | SDATA (p->name)); |
60f0fb11 | 6029 | if (p->infd < 0) |
b81ea5ef | 6030 | error ("Process %s is not active", |
d5db4077 | 6031 | SDATA (p->name)); |
b81ea5ef | 6032 | |
16782258 | 6033 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 6034 | |
6bfd98e7 | 6035 | if (gid == p->pid) |
b81ea5ef RS |
6036 | return Qnil; |
6037 | return Qt; | |
6038 | } | |
6039 | \f | |
d0d6b7c5 | 6040 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
6041 | If CURRENT_GROUP is t, that means send to the process group |
6042 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 6043 | This is used for various commands in shell mode. |
b81ea5ef RS |
6044 | If CURRENT_GROUP is lambda, that means send to the process group |
6045 | that currently owns the terminal, but only if it is NOT the shell itself. | |
6046 | ||
d0d6b7c5 | 6047 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
6048 | right away. |
6049 | ||
6050 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 6051 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 6052 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 6053 | |
f9738840 | 6054 | static void |
d0d6b7c5 JB |
6055 | process_send_signal (process, signo, current_group, nomsg) |
6056 | Lisp_Object process; | |
6057 | int signo; | |
6058 | Lisp_Object current_group; | |
6059 | int nomsg; | |
6060 | { | |
6061 | Lisp_Object proc; | |
6062 | register struct Lisp_Process *p; | |
6063 | int gid; | |
6064 | int no_pgrp = 0; | |
6065 | ||
6066 | proc = get_process (process); | |
6067 | p = XPROCESS (proc); | |
6068 | ||
d888760c | 6069 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 6070 | error ("Process %s is not a subprocess", |
d5db4077 | 6071 | SDATA (p->name)); |
60f0fb11 | 6072 | if (p->infd < 0) |
d0d6b7c5 | 6073 | error ("Process %s is not active", |
d5db4077 | 6074 | SDATA (p->name)); |
d0d6b7c5 | 6075 | |
60f0fb11 | 6076 | if (!p->pty_flag) |
d0d6b7c5 JB |
6077 | current_group = Qnil; |
6078 | ||
d0d6b7c5 | 6079 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
6080 | if (NILP (current_group)) |
6081 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 6082 | gid = p->pid; |
2af70a0c | 6083 | else |
d0d6b7c5 | 6084 | { |
b0310da4 | 6085 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
6086 | /* If possible, send signals to the entire pgrp |
6087 | by sending an input character to it. */ | |
b0310da4 | 6088 | |
6be429b1 | 6089 | /* TERMIOS is the latest and bestest, and seems most likely to |
63136da6 | 6090 | work. If the system has it, use it. */ |
6be429b1 JB |
6091 | #ifdef HAVE_TERMIOS |
6092 | struct termios t; | |
7f916a36 RS |
6093 | cc_t *sig_char = NULL; |
6094 | ||
60f0fb11 | 6095 | tcgetattr (p->infd, &t); |
6be429b1 JB |
6096 | |
6097 | switch (signo) | |
6098 | { | |
6099 | case SIGINT: | |
7f916a36 RS |
6100 | sig_char = &t.c_cc[VINTR]; |
6101 | break; | |
6be429b1 JB |
6102 | |
6103 | case SIGQUIT: | |
7f916a36 RS |
6104 | sig_char = &t.c_cc[VQUIT]; |
6105 | break; | |
6be429b1 JB |
6106 | |
6107 | case SIGTSTP: | |
d0adf46f | 6108 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 6109 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 6110 | #else |
7f916a36 | 6111 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 6112 | #endif |
7f916a36 | 6113 | break; |
6be429b1 JB |
6114 | } |
6115 | ||
ca4313d5 | 6116 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
6117 | { |
6118 | send_process (proc, sig_char, 1, Qnil); | |
6119 | return; | |
6120 | } | |
6121 | /* If we can't send the signal with a character, | |
6122 | fall through and send it another way. */ | |
6be429b1 JB |
6123 | #else /* ! HAVE_TERMIOS */ |
6124 | ||
b0310da4 JB |
6125 | /* On Berkeley descendants, the following IOCTL's retrieve the |
6126 | current control characters. */ | |
d0d6b7c5 | 6127 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 6128 | |
d0d6b7c5 JB |
6129 | struct tchars c; |
6130 | struct ltchars lc; | |
6131 | ||
6132 | switch (signo) | |
6133 | { | |
6134 | case SIGINT: | |
60f0fb11 | 6135 | ioctl (p->infd, TIOCGETC, &c); |
4556b700 | 6136 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 6137 | return; |
d0d6b7c5 | 6138 | case SIGQUIT: |
60f0fb11 | 6139 | ioctl (p->infd, TIOCGETC, &c); |
4556b700 | 6140 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 6141 | return; |
0ad77c54 | 6142 | #ifdef SIGTSTP |
d0d6b7c5 | 6143 | case SIGTSTP: |
60f0fb11 | 6144 | ioctl (p->infd, TIOCGLTC, &lc); |
4556b700 | 6145 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 6146 | return; |
b0310da4 | 6147 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 6148 | } |
b0310da4 JB |
6149 | |
6150 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
6151 | ||
6152 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
6153 | characters. */ | |
6154 | #ifdef TCGETA | |
d0d6b7c5 JB |
6155 | struct termio t; |
6156 | switch (signo) | |
6157 | { | |
6158 | case SIGINT: | |
60f0fb11 | 6159 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 6160 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 6161 | return; |
d0d6b7c5 | 6162 | case SIGQUIT: |
60f0fb11 | 6163 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 6164 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 6165 | return; |
7d79e3b4 | 6166 | #ifdef SIGTSTP |
d0d6b7c5 | 6167 | case SIGTSTP: |
60f0fb11 | 6168 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 6169 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 6170 | return; |
b0310da4 | 6171 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 6172 | } |
b0310da4 JB |
6173 | #else /* ! defined (TCGETA) */ |
6174 | Your configuration files are messed up. | |
6175 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
6176 | you'd better be using one of the alternatives above! */ | |
6177 | #endif /* ! defined (TCGETA) */ | |
6178 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
eef60308 | 6179 | /* In this case, the code above should alway return. */ |
20505336 | 6180 | abort (); |
f1c206fc RS |
6181 | #endif /* ! defined HAVE_TERMIOS */ |
6182 | ||
6183 | /* The code above may fall through if it can't | |
6184 | handle the signal. */ | |
20505336 | 6185 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 6186 | |
177c0ea7 | 6187 | #ifdef TIOCGPGRP |
2af70a0c | 6188 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
6189 | Otherwise, use the pty to get the pgrp. |
6190 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
6191 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
6192 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
6193 | His patch indicates that if TIOCGPGRP returns an error, then |
6194 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 6195 | |
16782258 | 6196 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 6197 | |
16782258 JD |
6198 | if (gid == -1) |
6199 | /* If we can't get the information, assume | |
6200 | the shell owns the tty. */ | |
6bfd98e7 | 6201 | gid = p->pid; |
2af70a0c RS |
6202 | |
6203 | /* It is not clear whether anything really can set GID to -1. | |
6204 | Perhaps on some system one of those ioctls can or could do so. | |
6205 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
6206 | if (gid == -1) |
6207 | no_pgrp = 1; | |
b0310da4 | 6208 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
6209 | /* Can't select pgrps on this system, so we know that |
6210 | the child itself heads the pgrp. */ | |
6bfd98e7 | 6211 | gid = p->pid; |
301c3fe4 | 6212 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
6213 | |
6214 | /* If current_group is lambda, and the shell owns the terminal, | |
6215 | don't send any signal. */ | |
6bfd98e7 | 6216 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 6217 | return; |
d0d6b7c5 | 6218 | } |
d0d6b7c5 JB |
6219 | |
6220 | switch (signo) | |
6221 | { | |
6222 | #ifdef SIGCONT | |
6223 | case SIGCONT: | |
6bfd98e7 | 6224 | p->raw_status_new = 0; |
d0d6b7c5 | 6225 | p->status = Qrun; |
60f0fb11 | 6226 | p->tick = ++process_tick; |
d0d6b7c5 | 6227 | if (!nomsg) |
e42bdf01 CY |
6228 | { |
6229 | status_notify (NULL); | |
6230 | redisplay_preserve_echo_area (13); | |
6231 | } | |
d0d6b7c5 | 6232 | break; |
301c3fe4 | 6233 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 6234 | case SIGINT: |
d0d6b7c5 | 6235 | case SIGQUIT: |
d0d6b7c5 | 6236 | case SIGKILL: |
60f0fb11 | 6237 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
6238 | break; |
6239 | } | |
6240 | ||
6241 | /* If we don't have process groups, send the signal to the immediate | |
6242 | subprocess. That isn't really right, but it's better than any | |
6243 | obvious alternative. */ | |
6244 | if (no_pgrp) | |
6245 | { | |
6bfd98e7 | 6246 | kill (p->pid, signo); |
d0d6b7c5 JB |
6247 | return; |
6248 | } | |
6249 | ||
6250 | /* gid may be a pid, or minus a pgrp's number */ | |
6251 | #ifdef TIOCSIGSEND | |
6252 | if (!NILP (current_group)) | |
16782258 | 6253 | { |
60f0fb11 | 6254 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
6255 | EMACS_KILLPG (gid, signo); |
6256 | } | |
d0d6b7c5 JB |
6257 | else |
6258 | { | |
6bfd98e7 | 6259 | gid = - p->pid; |
d0d6b7c5 JB |
6260 | kill (gid, signo); |
6261 | } | |
301c3fe4 | 6262 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 6263 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 6264 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
6265 | } |
6266 | ||
6267 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
6268 | doc: /* Interrupt process PROCESS. |
6269 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 6270 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
6271 | Second arg CURRENT-GROUP non-nil means send signal to |
6272 | the current process-group of the process's controlling terminal | |
6273 | rather than to the process's own process group. | |
6274 | If the process is a shell, this means interrupt current subjob | |
6275 | rather than the shell. | |
6276 | ||
6277 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
6278 | don't send the signal. */) | |
6279 | (process, current_group) | |
d0d6b7c5 JB |
6280 | Lisp_Object process, current_group; |
6281 | { | |
6282 | process_send_signal (process, SIGINT, current_group, 0); | |
6283 | return process; | |
6284 | } | |
6285 | ||
6286 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
6287 | doc: /* Kill process PROCESS. May be process or name of one. |
6288 | See function `interrupt-process' for more details on usage. */) | |
6289 | (process, current_group) | |
d0d6b7c5 JB |
6290 | Lisp_Object process, current_group; |
6291 | { | |
6292 | process_send_signal (process, SIGKILL, current_group, 0); | |
6293 | return process; | |
6294 | } | |
6295 | ||
6296 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
6297 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
6298 | See function `interrupt-process' for more details on usage. */) | |
6299 | (process, current_group) | |
d0d6b7c5 JB |
6300 | Lisp_Object process, current_group; |
6301 | { | |
6302 | process_send_signal (process, SIGQUIT, current_group, 0); | |
6303 | return process; | |
6304 | } | |
6305 | ||
6306 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6307 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6308 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6309 | If PROCESS is a network or serial process, inhibit handling of incoming |
6310 | traffic. */) | |
fdb82f93 | 6311 | (process, current_group) |
d0d6b7c5 JB |
6312 | Lisp_Object process, current_group; |
6313 | { | |
e690ca94 | 6314 | #ifdef HAVE_SOCKETS |
d888760c | 6315 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6316 | { |
6317 | struct Lisp_Process *p; | |
177c0ea7 | 6318 | |
e690ca94 KS |
6319 | p = XPROCESS (process); |
6320 | if (NILP (p->command) | |
60f0fb11 | 6321 | && p->infd >= 0) |
e690ca94 | 6322 | { |
60f0fb11 SM |
6323 | FD_CLR (p->infd, &input_wait_mask); |
6324 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
6325 | } |
6326 | p->command = Qt; | |
6327 | return process; | |
6328 | } | |
6329 | #endif | |
d0d6b7c5 | 6330 | #ifndef SIGTSTP |
a9a73d6c | 6331 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6332 | #else |
6333 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6334 | #endif | |
6335 | return process; | |
6336 | } | |
6337 | ||
6338 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6339 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6340 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6341 | If PROCESS is a network or serial process, resume handling of incoming |
6342 | traffic. */) | |
fdb82f93 | 6343 | (process, current_group) |
d0d6b7c5 JB |
6344 | Lisp_Object process, current_group; |
6345 | { | |
e690ca94 | 6346 | #ifdef HAVE_SOCKETS |
d888760c | 6347 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6348 | { |
6349 | struct Lisp_Process *p; | |
6350 | ||
6351 | p = XPROCESS (process); | |
6352 | if (EQ (p->command, Qt) | |
60f0fb11 | 6353 | && p->infd >= 0 |
e690ca94 KS |
6354 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
6355 | { | |
60f0fb11 SM |
6356 | FD_SET (p->infd, &input_wait_mask); |
6357 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6358 | #ifdef WINDOWSNT |
6359 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6360 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
6361 | #endif | |
6362 | #ifdef HAVE_TERMIOS | |
6363 | tcflush (p->infd, TCIFLUSH); | |
6364 | #endif | |
e690ca94 KS |
6365 | } |
6366 | p->command = Qnil; | |
6367 | return process; | |
6368 | } | |
6369 | #endif | |
d0d6b7c5 JB |
6370 | #ifdef SIGCONT |
6371 | process_send_signal (process, SIGCONT, current_group, 0); | |
6372 | #else | |
a9a73d6c | 6373 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6374 | #endif |
6375 | return process; | |
6376 | } | |
6377 | ||
6378 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6379 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6380 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6381 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6382 | process to signal; in this case, the process need not be a child of |
6383 | this Emacs. | |
fdb82f93 | 6384 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
6385 | (process, sigcode) |
6386 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 6387 | { |
6bfd98e7 | 6388 | pid_t pid; |
cdd5ea86 KS |
6389 | |
6390 | if (INTEGERP (process)) | |
6391 | { | |
6bfd98e7 SM |
6392 | pid = XINT (process); |
6393 | goto got_it; | |
6394 | } | |
6395 | ||
6396 | if (FLOATP (process)) | |
6397 | { | |
648f6edf | 6398 | pid = (pid_t) XFLOAT_DATA (process); |
cdd5ea86 KS |
6399 | goto got_it; |
6400 | } | |
6401 | ||
6402 | if (STRINGP (process)) | |
6403 | { | |
6404 | Lisp_Object tem; | |
6405 | if (tem = Fget_process (process), NILP (tem)) | |
6406 | { | |
6bfd98e7 SM |
6407 | pid = XINT (Fstring_to_number (process, make_number (10))); |
6408 | if (pid > 0) | |
cdd5ea86 KS |
6409 | goto got_it; |
6410 | } | |
6411 | process = tem; | |
6412 | } | |
6413 | else | |
6414 | process = get_process (process); | |
177c0ea7 | 6415 | |
cdd5ea86 KS |
6416 | if (NILP (process)) |
6417 | return process; | |
6418 | ||
6419 | CHECK_PROCESS (process); | |
6420 | pid = XPROCESS (process)->pid; | |
6bfd98e7 | 6421 | if (pid <= 0) |
cdd5ea86 KS |
6422 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
6423 | ||
6424 | got_it: | |
4766242d | 6425 | |
59324b1d | 6426 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6427 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6428 | XSETINT (sigcode, VALUE) |
6429 | ||
6430 | if (INTEGERP (sigcode)) | |
6431 | ; | |
6432 | else | |
6433 | { | |
6434 | unsigned char *name; | |
6435 | ||
b7826503 | 6436 | CHECK_SYMBOL (sigcode); |
d5db4077 | 6437 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6438 | |
ec0f21f4 | 6439 | if (!strncmp(name, "SIG", 3) || !strncmp(name, "sig", 3)) |
675984ed KS |
6440 | name += 3; |
6441 | ||
4766242d RS |
6442 | if (0) |
6443 | ; | |
59324b1d KS |
6444 | #ifdef SIGUSR1 |
6445 | parse_signal ("usr1", SIGUSR1); | |
6446 | #endif | |
6447 | #ifdef SIGUSR2 | |
6448 | parse_signal ("usr2", SIGUSR2); | |
6449 | #endif | |
6450 | #ifdef SIGTERM | |
6451 | parse_signal ("term", SIGTERM); | |
6452 | #endif | |
4766242d | 6453 | #ifdef SIGHUP |
59324b1d | 6454 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6455 | #endif |
6456 | #ifdef SIGINT | |
59324b1d | 6457 | parse_signal ("int", SIGINT); |
4766242d RS |
6458 | #endif |
6459 | #ifdef SIGQUIT | |
59324b1d | 6460 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6461 | #endif |
6462 | #ifdef SIGILL | |
59324b1d | 6463 | parse_signal ("ill", SIGILL); |
4766242d RS |
6464 | #endif |
6465 | #ifdef SIGABRT | |
59324b1d | 6466 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6467 | #endif |
6468 | #ifdef SIGEMT | |
59324b1d | 6469 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6470 | #endif |
6471 | #ifdef SIGKILL | |
59324b1d | 6472 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6473 | #endif |
6474 | #ifdef SIGFPE | |
59324b1d | 6475 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6476 | #endif |
6477 | #ifdef SIGBUS | |
59324b1d | 6478 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6479 | #endif |
6480 | #ifdef SIGSEGV | |
59324b1d | 6481 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6482 | #endif |
6483 | #ifdef SIGSYS | |
59324b1d | 6484 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6485 | #endif |
6486 | #ifdef SIGPIPE | |
59324b1d | 6487 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6488 | #endif |
6489 | #ifdef SIGALRM | |
59324b1d | 6490 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6491 | #endif |
6492 | #ifdef SIGURG | |
59324b1d | 6493 | parse_signal ("urg", SIGURG); |
4766242d RS |
6494 | #endif |
6495 | #ifdef SIGSTOP | |
59324b1d | 6496 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6497 | #endif |
6498 | #ifdef SIGTSTP | |
59324b1d | 6499 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6500 | #endif |
6501 | #ifdef SIGCONT | |
59324b1d | 6502 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6503 | #endif |
6504 | #ifdef SIGCHLD | |
59324b1d | 6505 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6506 | #endif |
6507 | #ifdef SIGTTIN | |
59324b1d | 6508 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6509 | #endif |
6510 | #ifdef SIGTTOU | |
59324b1d | 6511 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6512 | #endif |
6513 | #ifdef SIGIO | |
59324b1d | 6514 | parse_signal ("io", SIGIO); |
4766242d RS |
6515 | #endif |
6516 | #ifdef SIGXCPU | |
59324b1d | 6517 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6518 | #endif |
6519 | #ifdef SIGXFSZ | |
59324b1d | 6520 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6521 | #endif |
6522 | #ifdef SIGVTALRM | |
59324b1d | 6523 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6524 | #endif |
6525 | #ifdef SIGPROF | |
59324b1d | 6526 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6527 | #endif |
6528 | #ifdef SIGWINCH | |
59324b1d | 6529 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6530 | #endif |
6531 | #ifdef SIGINFO | |
59324b1d | 6532 | parse_signal ("info", SIGINFO); |
4766242d RS |
6533 | #endif |
6534 | else | |
9fa195a2 | 6535 | error ("Undefined signal name %s", name); |
4766242d RS |
6536 | } |
6537 | ||
59324b1d | 6538 | #undef parse_signal |
4766242d | 6539 | |
6bfd98e7 | 6540 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6541 | } |
6542 | ||
6543 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6544 | doc: /* Make PROCESS see end-of-file in its input. |
6545 | EOF comes after any text already sent to it. | |
6546 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6547 | nil, indicating the current buffer's process. | |
6548 | If PROCESS is a network connection, or is a process communicating | |
6549 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6550 | text to PROCESS after you call this function. |
6551 | If PROCESS is a serial process, wait until all output written to the | |
6552 | process has been transmitted to the serial port. */) | |
fdb82f93 | 6553 | (process) |
d0d6b7c5 JB |
6554 | Lisp_Object process; |
6555 | { | |
6556 | Lisp_Object proc; | |
de7fbd09 | 6557 | struct coding_system *coding; |
d0d6b7c5 | 6558 | |
e690ca94 KS |
6559 | if (DATAGRAM_CONN_P (process)) |
6560 | return process; | |
6561 | ||
d0d6b7c5 | 6562 | proc = get_process (process); |
60f0fb11 | 6563 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6564 | |
6565 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6566 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 RS |
6567 | update_status (XPROCESS (proc)); |
6568 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6569 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6570 | |
de7fbd09 KH |
6571 | if (CODING_REQUIRE_FLUSHING (coding)) |
6572 | { | |
6573 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6574 | send_process (proc, "", 0, Qnil); | |
6575 | } | |
6576 | ||
60f0fb11 | 6577 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6578 | send_process (proc, "\004", 1, Qnil); |
a879ee6f | 6579 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c GM |
6580 | { |
6581 | #ifdef HAVE_TERMIOS | |
6582 | if (tcdrain (XPROCESS (proc)->outfd) != 0) | |
6583 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
6584 | #endif | |
6585 | /* Do nothing on Windows because writes are blocking. */ | |
6586 | } | |
d0d6b7c5 JB |
6587 | else |
6588 | { | |
4525f571 RS |
6589 | int old_outfd, new_outfd; |
6590 | ||
93853f3d | 6591 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6592 | /* If this is a network connection, or socketpair is used |
6593 | for communication with the subprocess, call shutdown to cause EOF. | |
6594 | (In some old system, shutdown to socketpair doesn't work. | |
6595 | Then we just can't win.) */ | |
a879ee6f | 6596 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6597 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6598 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6599 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6600 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6601 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6602 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6603 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6604 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6605 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6606 | if (new_outfd < 0) |
6607 | abort (); | |
60f0fb11 | 6608 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6609 | |
6610 | if (!proc_encode_coding_system[new_outfd]) | |
6611 | proc_encode_coding_system[new_outfd] | |
6612 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6613 | bcopy (proc_encode_coding_system[old_outfd], | |
6614 | proc_encode_coding_system[new_outfd], | |
6615 | sizeof (struct coding_system)); | |
6616 | bzero (proc_encode_coding_system[old_outfd], | |
6617 | sizeof (struct coding_system)); | |
6618 | ||
60f0fb11 | 6619 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6620 | } |
d0d6b7c5 JB |
6621 | return process; |
6622 | } | |
6623 | ||
6624 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 6625 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 6626 | |
6b53bb85 | 6627 | void |
d0d6b7c5 JB |
6628 | kill_buffer_processes (buffer) |
6629 | Lisp_Object buffer; | |
6630 | { | |
6631 | Lisp_Object tail, proc; | |
6632 | ||
8e50cc2d | 6633 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6634 | { |
70949dac | 6635 | proc = XCDR (XCAR (tail)); |
8e50cc2d | 6636 | if (PROCESSP (proc) |
d0d6b7c5 JB |
6637 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
6638 | { | |
d888760c | 6639 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) |
e1ab4959 | 6640 | Fdelete_process (proc); |
60f0fb11 | 6641 | else if (XPROCESS (proc)->infd >= 0) |
d0d6b7c5 JB |
6642 | process_send_signal (proc, SIGHUP, Qnil, 1); |
6643 | } | |
6644 | } | |
6645 | } | |
6646 | \f | |
3fed8ad5 GM |
6647 | /* On receipt of a signal that a child status has changed, loop asking |
6648 | about children with changed statuses until the system says there | |
6649 | are no more. | |
177c0ea7 | 6650 | |
3fed8ad5 GM |
6651 | All we do is change the status; we do not run sentinels or print |
6652 | notifications. That is saved for the next time keyboard input is | |
6653 | done, in order to avoid timing errors. | |
6654 | ||
6655 | ** WARNING: this can be called during garbage collection. | |
6656 | Therefore, it must not be fooled by the presence of mark bits in | |
6657 | Lisp objects. | |
6658 | ||
6659 | ** USG WARNING: Although it is not obvious from the documentation | |
6660 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6661 | signal() before executing at least one wait(), otherwise the | |
6662 | handler will be called again, resulting in an infinite loop. The | |
6663 | relevant portion of the documentation reads "SIGCLD signals will be | |
6664 | queued and the signal-catching function will be continually | |
6665 | reentered until the queue is empty". Invoking signal() causes the | |
6666 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6667 | Inc. |
6668 | ||
6669 | ** Malloc WARNING: This should never call malloc either directly or | |
6670 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6671 | |
a5cfdda8 | 6672 | #ifdef SIGCHLD |
d0d6b7c5 JB |
6673 | SIGTYPE |
6674 | sigchld_handler (signo) | |
6675 | int signo; | |
6676 | { | |
6677 | int old_errno = errno; | |
6678 | Lisp_Object proc; | |
6679 | register struct Lisp_Process *p; | |
6be429b1 | 6680 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 | 6681 | |
333f1b6f JD |
6682 | SIGNAL_THREAD_CHECK (signo); |
6683 | ||
d0d6b7c5 JB |
6684 | while (1) |
6685 | { | |
8e050977 | 6686 | pid_t pid; |
bba104c1 | 6687 | int w; |
d0d6b7c5 JB |
6688 | Lisp_Object tail; |
6689 | ||
6690 | #ifdef WNOHANG | |
6691 | #ifndef WUNTRACED | |
6692 | #define WUNTRACED 0 | |
6693 | #endif /* no WUNTRACED */ | |
6694 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 | 6695 | do |
63136da6 | 6696 | { |
29ed4d51 CY |
6697 | errno = 0; |
6698 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
29ed4d51 | 6699 | } |
e7d4a904 | 6700 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6701 | |
6702 | if (pid <= 0) | |
6703 | { | |
3fed8ad5 GM |
6704 | /* PID == 0 means no processes found, PID == -1 means a real |
6705 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6706 | |
6707 | /* USG systems forget handlers when they are used; | |
6708 | must reestablish each time */ | |
3c0ee47b | 6709 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 | 6710 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
d0d6b7c5 JB |
6711 | #endif |
6712 | errno = old_errno; | |
6713 | return; | |
6714 | } | |
6715 | #else | |
6716 | pid = wait (&w); | |
6717 | #endif /* no WNOHANG */ | |
6718 | ||
6719 | /* Find the process that signaled us, and record its status. */ | |
6720 | ||
a5cfdda8 | 6721 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6722 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6723 | { |
8e050977 | 6724 | Lisp_Object xpid = XCAR (tail); |
8e50cc2d SM |
6725 | if ((INTEGERP (xpid) && pid == (pid_t) XINT (xpid)) |
6726 | || (FLOATP (xpid) && pid == (pid_t) XFLOAT_DATA (xpid))) | |
8e050977 CY |
6727 | { |
6728 | XSETCAR (tail, Qnil); | |
6729 | goto sigchld_end_of_loop; | |
6730 | } | |
a5cfdda8 KS |
6731 | } |
6732 | ||
6733 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6734 | p = 0; |
8e50cc2d | 6735 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6736 | { |
70949dac | 6737 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6738 | p = XPROCESS (proc); |
d888760c | 6739 | if (EQ (p->type, Qreal) && p->pid == pid) |
d0d6b7c5 JB |
6740 | break; |
6741 | p = 0; | |
6742 | } | |
6743 | ||
6744 | /* Look for an asynchronous process whose pid hasn't been filled | |
6745 | in yet. */ | |
6746 | if (p == 0) | |
8e50cc2d | 6747 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6748 | { |
70949dac | 6749 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6750 | p = XPROCESS (proc); |
6bfd98e7 | 6751 | if (p->pid == -1) |
d0d6b7c5 JB |
6752 | break; |
6753 | p = 0; | |
6754 | } | |
177c0ea7 | 6755 | |
d0d6b7c5 JB |
6756 | /* Change the status of the process that was found. */ |
6757 | if (p != 0) | |
6758 | { | |
e98d950b | 6759 | int clear_desc_flag = 0; |
177c0ea7 | 6760 | |
60f0fb11 | 6761 | p->tick = ++process_tick; |
bba104c1 | 6762 | p->raw_status = w; |
6bfd98e7 | 6763 | p->raw_status_new = 1; |
177c0ea7 | 6764 | |
d0d6b7c5 | 6765 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6766 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6767 | && p->infd >= 0) |
e98d950b RS |
6768 | clear_desc_flag = 1; |
6769 | ||
6770 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6771 | if (clear_desc_flag) | |
6772 | { | |
60f0fb11 SM |
6773 | FD_CLR (p->infd, &input_wait_mask); |
6774 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6775 | } |
6be429b1 | 6776 | |
214d6069 | 6777 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6778 | look around. */ |
6779 | if (input_available_clear_time) | |
6780 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6781 | } |
6782 | ||
a5cfdda8 KS |
6783 | /* There was no asynchronous process found for that pid: we have |
6784 | a synchronous process. */ | |
d0d6b7c5 JB |
6785 | else |
6786 | { | |
6787 | synch_process_alive = 0; | |
6788 | ||
6789 | /* Report the status of the synchronous process. */ | |
6790 | if (WIFEXITED (w)) | |
6791 | synch_process_retcode = WRETCODE (w); | |
6792 | else if (WIFSIGNALED (w)) | |
63136da6 | 6793 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6794 | |
214d6069 | 6795 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6796 | look around. */ |
6797 | if (input_available_clear_time) | |
6798 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6799 | } |
6800 | ||
a5cfdda8 KS |
6801 | sigchld_end_of_loop: |
6802 | ; | |
6803 | ||
d0d6b7c5 JB |
6804 | /* On some systems, we must return right away. |
6805 | If any more processes want to signal us, we will | |
6806 | get another signal. | |
6807 | Otherwise (on systems that have WNOHANG), loop around | |
6808 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6809 | #if (defined WINDOWSNT \ |
8a2a6032 | 6810 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6811 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6812 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6813 | signal (signo, sigchld_handler); |
6814 | #endif | |
6815 | errno = old_errno; | |
6816 | return; | |
6817 | #endif /* USG, but not HPUX with WNOHANG */ | |
6818 | } | |
6819 | } | |
a5cfdda8 | 6820 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6821 | \f |
6822 | ||
6823 | static Lisp_Object | |
6824 | exec_sentinel_unwind (data) | |
6825 | Lisp_Object data; | |
6826 | { | |
70949dac | 6827 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6828 | return Qnil; |
6829 | } | |
6830 | ||
3b9a3dfa RS |
6831 | static Lisp_Object |
6832 | exec_sentinel_error_handler (error) | |
6833 | Lisp_Object error; | |
6834 | { | |
6835 | cmd_error_internal (error, "error in process sentinel: "); | |
6836 | Vinhibit_quit = Qt; | |
6837 | update_echo_area (); | |
833ba342 | 6838 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6839 | return Qt; |
3b9a3dfa RS |
6840 | } |
6841 | ||
d0d6b7c5 JB |
6842 | static void |
6843 | exec_sentinel (proc, reason) | |
6844 | Lisp_Object proc, reason; | |
6845 | { | |
dfc21838 | 6846 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6847 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6848 | int count = SPECPDL_INDEX (); |
4da2f5be | 6849 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6850 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6851 | |
84af9896 RS |
6852 | if (inhibit_sentinels) |
6853 | return; | |
6854 | ||
dfc21838 RS |
6855 | /* No need to gcpro these, because all we do with them later |
6856 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6857 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6858 | XSETBUFFER (obuffer, current_buffer); |
6859 | okeymap = current_buffer->keymap; | |
6860 | ||
d0d6b7c5 JB |
6861 | sentinel = p->sentinel; |
6862 | if (NILP (sentinel)) | |
6863 | return; | |
6864 | ||
6865 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6866 | assure that it gets restored no matter how the sentinel exits. */ | |
6867 | p->sentinel = Qnil; | |
6868 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6869 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6870 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6871 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6872 | |
4da2f5be RS |
6873 | /* In case we get recursively called, |
6874 | and we already saved the match data nonrecursively, | |
6875 | save the same match data in safely recursive fashion. */ | |
6876 | if (outer_running_asynch_code) | |
6877 | { | |
6878 | Lisp_Object tem; | |
89f2614d KS |
6879 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6880 | restore_search_regs (); | |
6881 | record_unwind_save_match_data (); | |
6882 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6883 | } |
6884 | ||
6885 | /* For speed, if a search happens within this code, | |
6886 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6887 | running_asynch_code = 1; |
4da2f5be | 6888 | |
3b9a3dfa RS |
6889 | internal_condition_case_1 (read_process_output_call, |
6890 | Fcons (sentinel, | |
6891 | Fcons (proc, Fcons (reason, Qnil))), | |
6892 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6893 | exec_sentinel_error_handler); | |
4da2f5be RS |
6894 | |
6895 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6896 | restore_search_regs (); |
4da2f5be | 6897 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6898 | |
6899 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6900 | |
6901 | /* Restore waiting_for_user_input_p as it was | |
6902 | when we were called, in case the filter clobbered it. */ | |
6903 | waiting_for_user_input_p = waiting; | |
6904 | ||
7973cfa8 | 6905 | #if 0 |
dfc21838 RS |
6906 | if (! EQ (Fcurrent_buffer (), obuffer) |
6907 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6908 | #endif |
927e08be RS |
6909 | /* But do it only if the caller is actually going to read events. |
6910 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6911 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6912 | if (waiting_for_user_input_p == -1) |
6913 | record_asynch_buffer_change (); | |
8fb3cf64 | 6914 | |
2ea6d561 | 6915 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6916 | } |
6917 | ||
6918 | /* Report all recent events of a change in process status | |
6919 | (either run the sentinel or output a message). | |
b50fe468 RS |
6920 | This is usually done while Emacs is waiting for keyboard input |
6921 | but can be done at other times. */ | |
d0d6b7c5 | 6922 | |
ff6daed3 KS |
6923 | static void |
6924 | status_notify (deleting_process) | |
6925 | struct Lisp_Process *deleting_process; | |
d0d6b7c5 JB |
6926 | { |
6927 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6928 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6929 | struct gcpro gcpro1, gcpro2; |
6930 | ||
2e4149a8 KH |
6931 | tail = Qnil; |
6932 | msg = Qnil; | |
d0d6b7c5 JB |
6933 | /* We need to gcpro tail; if read_process_output calls a filter |
6934 | which deletes a process and removes the cons to which tail points | |
6935 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6936 | reference. */ | |
6937 | GCPRO2 (tail, msg); | |
6938 | ||
30623085 RS |
6939 | /* Set this now, so that if new processes are created by sentinels |
6940 | that we run, we get called again to handle their status changes. */ | |
6941 | update_tick = process_tick; | |
6942 | ||
99784d63 | 6943 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6944 | { |
30623085 RS |
6945 | Lisp_Object symbol; |
6946 | register struct Lisp_Process *p; | |
6947 | ||
99784d63 | 6948 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6949 | p = XPROCESS (proc); |
6950 | ||
60f0fb11 | 6951 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6952 | { |
60f0fb11 | 6953 | p->update_tick = p->tick; |
d0d6b7c5 | 6954 | |
30623085 | 6955 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6956 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6957 | && ! EQ (p->status, Qconnect) |
e690ca94 | 6958 | && ! EQ (p->status, Qlisten) |
d888760c GM |
6959 | /* Network or serial process not stopped: */ |
6960 | && ! EQ (p->command, Qt) | |
60f0fb11 | 6961 | && p->infd >= 0 |
ff6daed3 | 6962 | && p != deleting_process |
60f0fb11 | 6963 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6964 | |
30623085 | 6965 | buffer = p->buffer; |
d0d6b7c5 | 6966 | |
30623085 | 6967 | /* Get the text to use for the message. */ |
6bfd98e7 | 6968 | if (p->raw_status_new) |
30623085 | 6969 | update_status (p); |
116c423c | 6970 | msg = status_message (p); |
d0d6b7c5 | 6971 | |
30623085 RS |
6972 | /* If process is terminated, deactivate it or delete it. */ |
6973 | symbol = p->status; | |
6974 | if (CONSP (p->status)) | |
70949dac | 6975 | symbol = XCAR (p->status); |
d0d6b7c5 | 6976 | |
30623085 RS |
6977 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6978 | || EQ (symbol, Qclosed)) | |
6979 | { | |
6980 | if (delete_exited_processes) | |
6981 | remove_process (proc); | |
6982 | else | |
6983 | deactivate_process (proc); | |
6984 | } | |
d0d6b7c5 | 6985 | |
0ad61fe7 RS |
6986 | /* The actions above may have further incremented p->tick. |
6987 | So set p->update_tick again | |
6988 | so that an error in the sentinel will not cause | |
6989 | this code to be run again. */ | |
60f0fb11 | 6990 | p->update_tick = p->tick; |
30623085 RS |
6991 | /* Now output the message suitably. */ |
6992 | if (!NILP (p->sentinel)) | |
6993 | exec_sentinel (proc, msg); | |
6994 | /* Don't bother with a message in the buffer | |
6995 | when a process becomes runnable. */ | |
6996 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6997 | { | |
6998 | Lisp_Object ro, tem; | |
6999 | struct buffer *old = current_buffer; | |
d8a2934e RS |
7000 | int opoint, opoint_byte; |
7001 | int before, before_byte; | |
2e4149a8 | 7002 | |
30623085 | 7003 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 7004 | |
30623085 RS |
7005 | /* Avoid error if buffer is deleted |
7006 | (probably that's why the process is dead, too) */ | |
7007 | if (NILP (XBUFFER (buffer)->name)) | |
7008 | continue; | |
7009 | Fset_buffer (buffer); | |
12ca5cdf | 7010 | |
6ec8bbd2 | 7011 | opoint = PT; |
d8a2934e | 7012 | opoint_byte = PT_BYTE; |
30623085 RS |
7013 | /* Insert new output into buffer |
7014 | at the current end-of-output marker, | |
7015 | thus preserving logical ordering of input and output. */ | |
7016 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 7017 | Fgoto_char (p->mark); |
30623085 | 7018 | else |
d8a2934e | 7019 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
7020 | |
7021 | before = PT; | |
d8a2934e | 7022 | before_byte = PT_BYTE; |
30623085 RS |
7023 | |
7024 | tem = current_buffer->read_only; | |
7025 | current_buffer->read_only = Qnil; | |
7026 | insert_string ("\nProcess "); | |
7027 | Finsert (1, &p->name); | |
7028 | insert_string (" "); | |
7029 | Finsert (1, &msg); | |
7030 | current_buffer->read_only = tem; | |
d8a2934e | 7031 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 7032 | |
12ca5cdf | 7033 | if (opoint >= before) |
d8a2934e RS |
7034 | SET_PT_BOTH (opoint + (PT - before), |
7035 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 7036 | else |
d8a2934e | 7037 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 7038 | |
30623085 | 7039 | set_buffer_internal (old); |
d0d6b7c5 | 7040 | } |
30623085 RS |
7041 | } |
7042 | } /* end for */ | |
d0d6b7c5 JB |
7043 | |
7044 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
7045 | UNGCPRO; |
7046 | } | |
0fa1789e KH |
7047 | |
7048 | \f | |
7049 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
7050 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
7051 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
7052 | DECODING will be used to decode subprocess output and ENCODING to | |
7053 | encode subprocess input. */) | |
f3d9532b JB |
7054 | (process, decoding, encoding) |
7055 | register Lisp_Object process, decoding, encoding; | |
0fa1789e KH |
7056 | { |
7057 | register struct Lisp_Process *p; | |
7058 | ||
f3d9532b JB |
7059 | CHECK_PROCESS (process); |
7060 | p = XPROCESS (process); | |
60f0fb11 | 7061 | if (p->infd < 0) |
d5db4077 | 7062 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 7063 | if (p->outfd < 0) |
d5db4077 | 7064 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
7065 | Fcheck_coding_system (decoding); |
7066 | Fcheck_coding_system (encoding); | |
76d812bb | 7067 | encoding = coding_inherit_eol_type (encoding, Qnil); |
03f04413 KH |
7068 | p->decode_coding_system = decoding; |
7069 | p->encode_coding_system = encoding; | |
f3d9532b | 7070 | setup_process_coding_systems (process); |
0fa1789e KH |
7071 | |
7072 | return Qnil; | |
7073 | } | |
7074 | ||
7075 | DEFUN ("process-coding-system", | |
7076 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 7077 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
f3d9532b JB |
7078 | (process) |
7079 | register Lisp_Object process; | |
0fa1789e | 7080 | { |
f3d9532b JB |
7081 | CHECK_PROCESS (process); |
7082 | return Fcons (XPROCESS (process)->decode_coding_system, | |
7083 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 7084 | } |
03f04413 KH |
7085 | |
7086 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
7087 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
7088 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
7089 | If FLAG is non-nil, the filter is given multibyte strings. | |
7090 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
7091 | all character code conversion except for end-of-line conversion is |
7092 | suppressed. */) | |
f3d9532b JB |
7093 | (process, flag) |
7094 | Lisp_Object process, flag; | |
03f04413 KH |
7095 | { |
7096 | register struct Lisp_Process *p; | |
7097 | ||
f3d9532b JB |
7098 | CHECK_PROCESS (process); |
7099 | p = XPROCESS (process); | |
5431bd6a SM |
7100 | if (NILP (flag)) |
7101 | p->decode_coding_system = raw_text_coding_system (p->decode_coding_system); | |
f3d9532b | 7102 | setup_process_coding_systems (process); |
03f04413 KH |
7103 | |
7104 | return Qnil; | |
7105 | } | |
7106 | ||
7107 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
7108 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
7109 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
f3d9532b JB |
7110 | (process) |
7111 | Lisp_Object process; | |
03f04413 KH |
7112 | { |
7113 | register struct Lisp_Process *p; | |
5431bd6a | 7114 | struct coding_system *coding; |
03f04413 | 7115 | |
f3d9532b JB |
7116 | CHECK_PROCESS (process); |
7117 | p = XPROCESS (process); | |
5431bd6a SM |
7118 | coding = proc_decode_coding_system[p->infd]; |
7119 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
7120 | } |
7121 | ||
7122 | ||
d0d6b7c5 | 7123 | \f |
da8e1115 | 7124 | /* Add DESC to the set of keyboard input descriptors. */ |
a69281ff RS |
7125 | |
7126 | void | |
7127 | add_keyboard_wait_descriptor (desc) | |
7128 | int desc; | |
7129 | { | |
a69281ff | 7130 | FD_SET (desc, &input_wait_mask); |
b5dc1c83 | 7131 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
7132 | if (desc > max_keyboard_desc) |
7133 | max_keyboard_desc = desc; | |
7134 | } | |
7135 | ||
994d9841 NR |
7136 | static int add_gpm_wait_descriptor_called_flag; |
7137 | ||
7138 | void | |
7139 | add_gpm_wait_descriptor (desc) | |
7140 | int desc; | |
7141 | { | |
7142 | if (! add_gpm_wait_descriptor_called_flag) | |
7143 | FD_CLR (0, &input_wait_mask); | |
7144 | add_gpm_wait_descriptor_called_flag = 1; | |
7145 | FD_SET (desc, &input_wait_mask); | |
7146 | FD_SET (desc, &gpm_wait_mask); | |
7147 | if (desc > max_gpm_desc) | |
7148 | max_gpm_desc = desc; | |
7149 | } | |
7150 | ||
a69281ff RS |
7151 | /* From now on, do not expect DESC to give keyboard input. */ |
7152 | ||
7153 | void | |
7154 | delete_keyboard_wait_descriptor (desc) | |
7155 | int desc; | |
7156 | { | |
7157 | int fd; | |
7158 | int lim = max_keyboard_desc; | |
7159 | ||
7160 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 7161 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
7162 | |
7163 | if (desc == max_keyboard_desc) | |
7164 | for (fd = 0; fd < lim; fd++) | |
7165 | if (FD_ISSET (fd, &input_wait_mask) | |
994d9841 NR |
7166 | && !FD_ISSET (fd, &non_keyboard_wait_mask) |
7167 | && !FD_ISSET (fd, &gpm_wait_mask)) | |
a69281ff RS |
7168 | max_keyboard_desc = fd; |
7169 | } | |
7170 | ||
994d9841 NR |
7171 | void |
7172 | delete_gpm_wait_descriptor (desc) | |
7173 | int desc; | |
7174 | { | |
7175 | int fd; | |
7176 | int lim = max_gpm_desc; | |
7177 | ||
7178 | FD_CLR (desc, &input_wait_mask); | |
7179 | FD_CLR (desc, &non_process_wait_mask); | |
7180 | ||
7181 | if (desc == max_gpm_desc) | |
7182 | for (fd = 0; fd < lim; fd++) | |
7183 | if (FD_ISSET (fd, &input_wait_mask) | |
7184 | && !FD_ISSET (fd, &non_keyboard_wait_mask) | |
7185 | && !FD_ISSET (fd, &non_process_wait_mask)) | |
7186 | max_gpm_desc = fd; | |
7187 | } | |
7188 | ||
a69281ff RS |
7189 | /* Return nonzero if *MASK has a bit set |
7190 | that corresponds to one of the keyboard input descriptors. */ | |
7191 | ||
ff6daed3 | 7192 | static int |
a69281ff RS |
7193 | keyboard_bit_set (mask) |
7194 | SELECT_TYPE *mask; | |
7195 | { | |
7196 | int fd; | |
7197 | ||
ee8e09af | 7198 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
7199 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
7200 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
7201 | return 1; | |
7202 | ||
7203 | return 0; | |
7204 | } | |
7205 | \f | |
934e2a68 EZ |
7206 | /* Enumeration of and access to system processes a-la ps(1). */ |
7207 | ||
934e2a68 EZ |
7208 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7209 | 0, 0, 0, | |
7210 | doc: /* Return a list of numerical process IDs of all running processes. | |
7211 | If this functionality is unsupported, return nil. | |
7212 | ||
a20878b6 | 7213 | See `process-attributes' for getting attributes of a process given its ID. */) |
934e2a68 EZ |
7214 | () |
7215 | { | |
06e111a6 | 7216 | return list_system_processes (); |
934e2a68 EZ |
7217 | } |
7218 | ||
a20878b6 MB |
7219 | DEFUN ("process-attributes", Fprocess_attributes, |
7220 | Sprocess_attributes, 1, 1, 0, | |
934e2a68 EZ |
7221 | doc: /* Return attributes of the process given by its PID, a number. |
7222 | ||
7223 | Value is an alist where each element is a cons cell of the form | |
7224 | ||
ea92add1 | 7225 | \(KEY . VALUE) |
934e2a68 EZ |
7226 | |
7227 | If this functionality is unsupported, the value is nil. | |
7228 | ||
7229 | See `list-system-processes' for getting a list of all process IDs. | |
7230 | ||
ea92add1 RW |
7231 | The KEYs of the attributes that this function may return are listed |
7232 | below, together with the type of the associated VALUE (in parentheses). | |
8f8b082a EZ |
7233 | Not all platforms support all of these attributes; unsupported |
7234 | attributes will not appear in the returned alist. | |
934e2a68 EZ |
7235 | Unless explicitly indicated otherwise, numbers can have either |
7236 | integer or floating point values. | |
7237 | ||
7238 | euid -- Effective user User ID of the process (number) | |
7239 | user -- User name corresponding to euid (string) | |
7240 | egid -- Effective user Group ID of the process (number) | |
7241 | group -- Group name corresponding to egid (string) | |
7242 | comm -- Command name (executable name only) (string) | |
7243 | state -- Process state code, such as "S", "R", or "T" (string) | |
7244 | ppid -- Parent process ID (number) | |
7245 | pgrp -- Process group ID (number) | |
7246 | sess -- Session ID, i.e. process ID of session leader (number) | |
7247 | ttname -- Controlling tty name (string) | |
7248 | tpgid -- ID of foreground process group on the process's tty (number) | |
7249 | minflt -- number of minor page faults (number) | |
7250 | majflt -- number of major page faults (number) | |
7251 | cminflt -- cumulative number of minor page faults (number) | |
7252 | cmajflt -- cumulative number of major page faults (number) | |
7253 | utime -- user time used by the process, in the (HIGH LOW USEC) format | |
7254 | stime -- system time used by the process, in the (HIGH LOW USEC) format | |
89c874cf | 7255 | time -- sum of utime and stime, in the (HIGH LOW USEC) format |
934e2a68 EZ |
7256 | cutime -- user time used by the process and its children, (HIGH LOW USEC) |
7257 | cstime -- system time used by the process and its children, (HIGH LOW USEC) | |
89c874cf | 7258 | ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format |
934e2a68 EZ |
7259 | pri -- priority of the process (number) |
7260 | nice -- nice value of the process (number) | |
7261 | thcount -- process thread count (number) | |
7262 | start -- time the process started, in the (HIGH LOW USEC) format | |
7263 | vsize -- virtual memory size of the process in KB's (number) | |
7264 | rss -- resident set size of the process in KB's (number) | |
7265 | etime -- elapsed time the process is running, in (HIGH LOW USEC) format | |
7266 | pcpu -- percents of CPU time used by the process (floating-point number) | |
7267 | pmem -- percents of total physical memory used by process's resident set | |
7268 | (floating-point number) | |
7269 | args -- command line which invoked the process (string). */) | |
7270 | (pid) | |
7271 | ||
7272 | Lisp_Object pid; | |
7273 | { | |
06e111a6 | 7274 | return system_process_attributes (pid); |
934e2a68 EZ |
7275 | } |
7276 | \f | |
dfcf069d | 7277 | void |
d0d6b7c5 JB |
7278 | init_process () |
7279 | { | |
7280 | register int i; | |
7281 | ||
84af9896 RS |
7282 | inhibit_sentinels = 0; |
7283 | ||
d0d6b7c5 JB |
7284 | #ifdef SIGCHLD |
7285 | #ifndef CANNOT_DUMP | |
7286 | if (! noninteractive || initialized) | |
7287 | #endif | |
7288 | signal (SIGCHLD, sigchld_handler); | |
7289 | #endif | |
7290 | ||
7291 | FD_ZERO (&input_wait_mask); | |
a69281ff | 7292 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 7293 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 7294 | max_process_desc = 0; |
dd2281ae | 7295 | |
bad49fc7 KS |
7296 | #ifdef NON_BLOCKING_CONNECT |
7297 | FD_ZERO (&connect_wait_mask); | |
7298 | num_pending_connects = 0; | |
7299 | #endif | |
7300 | ||
6b61353c KH |
7301 | #ifdef ADAPTIVE_READ_BUFFERING |
7302 | process_output_delay_count = 0; | |
7303 | process_output_skip = 0; | |
7304 | #endif | |
7305 | ||
c0707982 KL |
7306 | /* Don't do this, it caused infinite select loops. The display |
7307 | method should call add_keyboard_wait_descriptor on stdin if it | |
7308 | needs that. */ | |
7309 | #if 0 | |
a69281ff | 7310 | FD_SET (0, &input_wait_mask); |
c0707982 | 7311 | #endif |
dd2281ae | 7312 | |
d0d6b7c5 | 7313 | Vprocess_alist = Qnil; |
a5cfdda8 KS |
7314 | #ifdef SIGCHLD |
7315 | deleted_pid_list = Qnil; | |
7316 | #endif | |
d0d6b7c5 JB |
7317 | for (i = 0; i < MAXDESC; i++) |
7318 | { | |
7319 | chan_process[i] = Qnil; | |
7320 | proc_buffered_char[i] = -1; | |
7321 | } | |
c7580538 KH |
7322 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
7323 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
7324 | #ifdef DATAGRAM_SOCKETS |
7325 | bzero (datagram_address, sizeof datagram_address); | |
7326 | #endif | |
9057ff80 | 7327 | |
c2bd2c26 KS |
7328 | #ifdef HAVE_SOCKETS |
7329 | { | |
7330 | Lisp_Object subfeatures = Qnil; | |
5e2327cf | 7331 | const struct socket_options *sopt; |
6b61353c | 7332 | |
9057ff80 | 7333 | #define ADD_SUBFEATURE(key, val) \ |
d67b4f80 | 7334 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) |
9057ff80 | 7335 | |
9057ff80 | 7336 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 7337 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
7338 | #endif |
7339 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 7340 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 | 7341 | #endif |
f00c449b SM |
7342 | #ifdef HAVE_SEQPACKET |
7343 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7344 | #endif | |
9057ff80 | 7345 | #ifdef HAVE_LOCAL_SOCKETS |
c2bd2c26 | 7346 | ADD_SUBFEATURE (QCfamily, Qlocal); |
e1652a86 KS |
7347 | #endif |
7348 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7349 | #ifdef AF_INET6 | |
7350 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
9057ff80 KS |
7351 | #endif |
7352 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 7353 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 7354 | #endif |
132d0475 | 7355 | #if defined(O_NONBLOCK) || defined(O_NDELAY) |
c2bd2c26 | 7356 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 7357 | #endif |
6b61353c KH |
7358 | |
7359 | for (sopt = socket_options; sopt->name; sopt++) | |
d67b4f80 | 7360 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); |
6b61353c | 7361 | |
d67b4f80 | 7362 | Fprovide (intern_c_string ("make-network-process"), subfeatures); |
c2bd2c26 KS |
7363 | } |
7364 | #endif /* HAVE_SOCKETS */ | |
d9e7c622 | 7365 | |
14145fa3 | 7366 | #if defined (DARWIN_OS) |
db853b7a | 7367 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive |
d9e7c622 ST |
7368 | processes. As such, we only change the default value. */ |
7369 | if (initialized) | |
7370 | { | |
7371 | char *release = get_operating_system_release(); | |
7372 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION | |
7373 | && release[1] == '.')) { | |
7374 | Vprocess_connection_type = Qnil; | |
7375 | } | |
7376 | } | |
7377 | #endif | |
d0d6b7c5 | 7378 | } |
312c9964 | 7379 | |
dfcf069d | 7380 | void |
d0d6b7c5 JB |
7381 | syms_of_process () |
7382 | { | |
d67b4f80 | 7383 | Qprocessp = intern_c_string ("processp"); |
d0d6b7c5 | 7384 | staticpro (&Qprocessp); |
d67b4f80 | 7385 | Qrun = intern_c_string ("run"); |
d0d6b7c5 | 7386 | staticpro (&Qrun); |
d67b4f80 | 7387 | Qstop = intern_c_string ("stop"); |
d0d6b7c5 | 7388 | staticpro (&Qstop); |
d67b4f80 | 7389 | Qsignal = intern_c_string ("signal"); |
324e68ba | 7390 | staticpro (&Qsignal); |
d0d6b7c5 JB |
7391 | |
7392 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7393 | here again. | |
7394 | ||
d67b4f80 | 7395 | Qexit = intern_c_string ("exit"); |
d0d6b7c5 JB |
7396 | staticpro (&Qexit); */ |
7397 | ||
d67b4f80 | 7398 | Qopen = intern_c_string ("open"); |
d0d6b7c5 | 7399 | staticpro (&Qopen); |
d67b4f80 | 7400 | Qclosed = intern_c_string ("closed"); |
d0d6b7c5 | 7401 | staticpro (&Qclosed); |
d67b4f80 | 7402 | Qconnect = intern_c_string ("connect"); |
dd2a17ab | 7403 | staticpro (&Qconnect); |
d67b4f80 | 7404 | Qfailed = intern_c_string ("failed"); |
dd2a17ab | 7405 | staticpro (&Qfailed); |
d67b4f80 | 7406 | Qlisten = intern_c_string ("listen"); |
e690ca94 | 7407 | staticpro (&Qlisten); |
d67b4f80 | 7408 | Qlocal = intern_c_string ("local"); |
e690ca94 | 7409 | staticpro (&Qlocal); |
d67b4f80 | 7410 | Qipv4 = intern_c_string ("ipv4"); |
e1652a86 KS |
7411 | staticpro (&Qipv4); |
7412 | #ifdef AF_INET6 | |
d67b4f80 | 7413 | Qipv6 = intern_c_string ("ipv6"); |
e1652a86 KS |
7414 | staticpro (&Qipv6); |
7415 | #endif | |
d67b4f80 | 7416 | Qdatagram = intern_c_string ("datagram"); |
9057ff80 | 7417 | staticpro (&Qdatagram); |
f00c449b SM |
7418 | Qseqpacket = intern_c_string ("seqpacket"); |
7419 | staticpro (&Qseqpacket); | |
e690ca94 | 7420 | |
d67b4f80 | 7421 | QCport = intern_c_string (":port"); |
d888760c | 7422 | staticpro (&QCport); |
d67b4f80 | 7423 | QCspeed = intern_c_string (":speed"); |
d888760c | 7424 | staticpro (&QCspeed); |
d67b4f80 | 7425 | QCprocess = intern_c_string (":process"); |
d888760c GM |
7426 | staticpro (&QCprocess); |
7427 | ||
d67b4f80 | 7428 | QCbytesize = intern_c_string (":bytesize"); |
d888760c | 7429 | staticpro (&QCbytesize); |
d67b4f80 | 7430 | QCstopbits = intern_c_string (":stopbits"); |
d888760c | 7431 | staticpro (&QCstopbits); |
d67b4f80 | 7432 | QCparity = intern_c_string (":parity"); |
d888760c | 7433 | staticpro (&QCparity); |
d67b4f80 | 7434 | Qodd = intern_c_string ("odd"); |
d888760c | 7435 | staticpro (&Qodd); |
d67b4f80 | 7436 | Qeven = intern_c_string ("even"); |
d888760c | 7437 | staticpro (&Qeven); |
d67b4f80 | 7438 | QCflowcontrol = intern_c_string (":flowcontrol"); |
d888760c | 7439 | staticpro (&QCflowcontrol); |
d67b4f80 | 7440 | Qhw = intern_c_string ("hw"); |
d888760c | 7441 | staticpro (&Qhw); |
d67b4f80 | 7442 | Qsw = intern_c_string ("sw"); |
d888760c | 7443 | staticpro (&Qsw); |
d67b4f80 | 7444 | QCsummary = intern_c_string (":summary"); |
d888760c GM |
7445 | staticpro (&QCsummary); |
7446 | ||
d67b4f80 | 7447 | Qreal = intern_c_string ("real"); |
d888760c | 7448 | staticpro (&Qreal); |
d67b4f80 | 7449 | Qnetwork = intern_c_string ("network"); |
d888760c | 7450 | staticpro (&Qnetwork); |
d67b4f80 | 7451 | Qserial = intern_c_string ("serial"); |
d888760c GM |
7452 | staticpro (&Qserial); |
7453 | ||
d67b4f80 | 7454 | QCname = intern_c_string (":name"); |
e690ca94 | 7455 | staticpro (&QCname); |
d67b4f80 | 7456 | QCbuffer = intern_c_string (":buffer"); |
e690ca94 | 7457 | staticpro (&QCbuffer); |
d67b4f80 | 7458 | QChost = intern_c_string (":host"); |
e690ca94 | 7459 | staticpro (&QChost); |
d67b4f80 | 7460 | QCservice = intern_c_string (":service"); |
e690ca94 | 7461 | staticpro (&QCservice); |
d67b4f80 | 7462 | QCtype = intern_c_string (":type"); |
9057ff80 | 7463 | staticpro (&QCtype); |
d67b4f80 | 7464 | QClocal = intern_c_string (":local"); |
e690ca94 | 7465 | staticpro (&QClocal); |
d67b4f80 | 7466 | QCremote = intern_c_string (":remote"); |
e690ca94 | 7467 | staticpro (&QCremote); |
d67b4f80 | 7468 | QCcoding = intern_c_string (":coding"); |
e690ca94 | 7469 | staticpro (&QCcoding); |
d67b4f80 | 7470 | QCserver = intern_c_string (":server"); |
e690ca94 | 7471 | staticpro (&QCserver); |
d67b4f80 | 7472 | QCnowait = intern_c_string (":nowait"); |
e690ca94 | 7473 | staticpro (&QCnowait); |
d67b4f80 | 7474 | QCsentinel = intern_c_string (":sentinel"); |
e690ca94 | 7475 | staticpro (&QCsentinel); |
d67b4f80 | 7476 | QClog = intern_c_string (":log"); |
e690ca94 | 7477 | staticpro (&QClog); |
d67b4f80 | 7478 | QCnoquery = intern_c_string (":noquery"); |
e690ca94 | 7479 | staticpro (&QCnoquery); |
d67b4f80 | 7480 | QCstop = intern_c_string (":stop"); |
e690ca94 | 7481 | staticpro (&QCstop); |
d67b4f80 | 7482 | QCoptions = intern_c_string (":options"); |
e690ca94 | 7483 | staticpro (&QCoptions); |
d67b4f80 | 7484 | QCplist = intern_c_string (":plist"); |
faa7db08 | 7485 | staticpro (&QCplist); |
177c0ea7 | 7486 | |
d67b4f80 | 7487 | Qlast_nonmenu_event = intern_c_string ("last-nonmenu-event"); |
6545aada RS |
7488 | staticpro (&Qlast_nonmenu_event); |
7489 | ||
d0d6b7c5 | 7490 | staticpro (&Vprocess_alist); |
a5cfdda8 KS |
7491 | #ifdef SIGCHLD |
7492 | staticpro (&deleted_pid_list); | |
7493 | #endif | |
d0d6b7c5 | 7494 | |
d67b4f80 | 7495 | Qeuid = intern_c_string ("euid"); |
934e2a68 | 7496 | staticpro (&Qeuid); |
d67b4f80 | 7497 | Qegid = intern_c_string ("egid"); |
934e2a68 | 7498 | staticpro (&Qegid); |
d67b4f80 | 7499 | Quser = intern_c_string ("user"); |
934e2a68 | 7500 | staticpro (&Quser); |
d67b4f80 | 7501 | Qgroup = intern_c_string ("group"); |
934e2a68 | 7502 | staticpro (&Qgroup); |
d67b4f80 | 7503 | Qcomm = intern_c_string ("comm"); |
934e2a68 | 7504 | staticpro (&Qcomm); |
d67b4f80 | 7505 | Qstate = intern_c_string ("state"); |
934e2a68 | 7506 | staticpro (&Qstate); |
d67b4f80 | 7507 | Qppid = intern_c_string ("ppid"); |
934e2a68 | 7508 | staticpro (&Qppid); |
d67b4f80 | 7509 | Qpgrp = intern_c_string ("pgrp"); |
934e2a68 | 7510 | staticpro (&Qpgrp); |
d67b4f80 | 7511 | Qsess = intern_c_string ("sess"); |
934e2a68 | 7512 | staticpro (&Qsess); |
d67b4f80 | 7513 | Qttname = intern_c_string ("ttname"); |
934e2a68 | 7514 | staticpro (&Qttname); |
d67b4f80 | 7515 | Qtpgid = intern_c_string ("tpgid"); |
934e2a68 | 7516 | staticpro (&Qtpgid); |
d67b4f80 | 7517 | Qminflt = intern_c_string ("minflt"); |
934e2a68 | 7518 | staticpro (&Qminflt); |
d67b4f80 | 7519 | Qmajflt = intern_c_string ("majflt"); |
934e2a68 | 7520 | staticpro (&Qmajflt); |
d67b4f80 | 7521 | Qcminflt = intern_c_string ("cminflt"); |
934e2a68 | 7522 | staticpro (&Qcminflt); |
d67b4f80 | 7523 | Qcmajflt = intern_c_string ("cmajflt"); |
934e2a68 | 7524 | staticpro (&Qcmajflt); |
d67b4f80 | 7525 | Qutime = intern_c_string ("utime"); |
934e2a68 | 7526 | staticpro (&Qutime); |
d67b4f80 | 7527 | Qstime = intern_c_string ("stime"); |
934e2a68 | 7528 | staticpro (&Qstime); |
d67b4f80 | 7529 | Qtime = intern_c_string ("time"); |
89c874cf | 7530 | staticpro (&Qtime); |
d67b4f80 | 7531 | Qcutime = intern_c_string ("cutime"); |
934e2a68 | 7532 | staticpro (&Qcutime); |
d67b4f80 | 7533 | Qcstime = intern_c_string ("cstime"); |
934e2a68 | 7534 | staticpro (&Qcstime); |
d67b4f80 | 7535 | Qctime = intern_c_string ("ctime"); |
89c874cf | 7536 | staticpro (&Qctime); |
d67b4f80 | 7537 | Qpri = intern_c_string ("pri"); |
934e2a68 | 7538 | staticpro (&Qpri); |
d67b4f80 | 7539 | Qnice = intern_c_string ("nice"); |
934e2a68 | 7540 | staticpro (&Qnice); |
d67b4f80 | 7541 | Qthcount = intern_c_string ("thcount"); |
934e2a68 | 7542 | staticpro (&Qthcount); |
d67b4f80 | 7543 | Qstart = intern_c_string ("start"); |
934e2a68 | 7544 | staticpro (&Qstart); |
d67b4f80 | 7545 | Qvsize = intern_c_string ("vsize"); |
934e2a68 | 7546 | staticpro (&Qvsize); |
d67b4f80 | 7547 | Qrss = intern_c_string ("rss"); |
934e2a68 | 7548 | staticpro (&Qrss); |
d67b4f80 | 7549 | Qetime = intern_c_string ("etime"); |
934e2a68 | 7550 | staticpro (&Qetime); |
d67b4f80 | 7551 | Qpcpu = intern_c_string ("pcpu"); |
934e2a68 | 7552 | staticpro (&Qpcpu); |
d67b4f80 | 7553 | Qpmem = intern_c_string ("pmem"); |
934e2a68 | 7554 | staticpro (&Qpmem); |
d67b4f80 | 7555 | Qargs = intern_c_string ("args"); |
934e2a68 EZ |
7556 | staticpro (&Qargs); |
7557 | ||
d0d6b7c5 | 7558 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, |
fdb82f93 | 7559 | doc: /* *Non-nil means delete processes immediately when they exit. |
d4e83d5c | 7560 | A value of nil means don't delete them until `list-processes' is run. */); |
d0d6b7c5 JB |
7561 | |
7562 | delete_exited_processes = 1; | |
7563 | ||
7564 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
7565 | doc: /* Control type of device used to communicate with subprocesses. |
7566 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7567 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7568 | then a pipe is used in any case. | |
7569 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
7570 | Vprocess_connection_type = Qt; |
7571 | ||
6b61353c KH |
7572 | #ifdef ADAPTIVE_READ_BUFFERING |
7573 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
7574 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
f3d9532b | 7575 | On some systems, when Emacs reads the output from a subprocess, the output data |
6b61353c | 7576 | is read in very small blocks, potentially resulting in very poor performance. |
2de35a25 | 7577 | This behavior can be remedied to some extent by setting this variable to a |
6b61353c | 7578 | non-nil value, as it will automatically delay reading from such processes, to |
635a3496 | 7579 | allow them to produce more output before Emacs tries to read it. |
6b61353c KH |
7580 | If the value is t, the delay is reset after each write to the process; any other |
7581 | non-nil value means that the delay is not reset on write. | |
7582 | The variable takes effect when `start-process' is called. */); | |
7583 | Vprocess_adaptive_read_buffering = Qt; | |
7584 | #endif | |
7585 | ||
d0d6b7c5 JB |
7586 | defsubr (&Sprocessp); |
7587 | defsubr (&Sget_process); | |
7588 | defsubr (&Sget_buffer_process); | |
7589 | defsubr (&Sdelete_process); | |
7590 | defsubr (&Sprocess_status); | |
7591 | defsubr (&Sprocess_exit_status); | |
7592 | defsubr (&Sprocess_id); | |
7593 | defsubr (&Sprocess_name); | |
3b9a3dfa | 7594 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
7595 | defsubr (&Sprocess_command); |
7596 | defsubr (&Sset_process_buffer); | |
7597 | defsubr (&Sprocess_buffer); | |
7598 | defsubr (&Sprocess_mark); | |
7599 | defsubr (&Sset_process_filter); | |
7600 | defsubr (&Sprocess_filter); | |
7601 | defsubr (&Sset_process_sentinel); | |
7602 | defsubr (&Sprocess_sentinel); | |
de282a05 | 7603 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
7604 | defsubr (&Sset_process_inherit_coding_system_flag); |
7605 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
7606 | defsubr (&Sset_process_query_on_exit_flag); |
7607 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 7608 | defsubr (&Sprocess_contact); |
faa7db08 KS |
7609 | defsubr (&Sprocess_plist); |
7610 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
7611 | defsubr (&Slist_processes); |
7612 | defsubr (&Sprocess_list); | |
7613 | defsubr (&Sstart_process); | |
d888760c GM |
7614 | #ifdef HAVE_SERIAL |
7615 | defsubr (&Sserial_process_configure); | |
7616 | defsubr (&Smake_serial_process); | |
7617 | #endif /* HAVE_SERIAL */ | |
d0d6b7c5 | 7618 | #ifdef HAVE_SOCKETS |
6b61353c | 7619 | defsubr (&Sset_network_process_option); |
e690ca94 | 7620 | defsubr (&Smake_network_process); |
991234f0 | 7621 | defsubr (&Sformat_network_address); |
d0d6b7c5 | 7622 | #endif /* HAVE_SOCKETS */ |
6b61353c KH |
7623 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
7624 | #ifdef SIOCGIFCONF | |
7625 | defsubr (&Snetwork_interface_list); | |
7626 | #endif | |
7627 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
7628 | defsubr (&Snetwork_interface_info); | |
7629 | #endif | |
7630 | #endif /* HAVE_SOCKETS ... */ | |
e690ca94 KS |
7631 | #ifdef DATAGRAM_SOCKETS |
7632 | defsubr (&Sprocess_datagram_address); | |
7633 | defsubr (&Sset_process_datagram_address); | |
7634 | #endif | |
d0d6b7c5 JB |
7635 | defsubr (&Saccept_process_output); |
7636 | defsubr (&Sprocess_send_region); | |
7637 | defsubr (&Sprocess_send_string); | |
7638 | defsubr (&Sinterrupt_process); | |
7639 | defsubr (&Skill_process); | |
7640 | defsubr (&Squit_process); | |
7641 | defsubr (&Sstop_process); | |
7642 | defsubr (&Scontinue_process); | |
b81ea5ef | 7643 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
7644 | defsubr (&Sprocess_send_eof); |
7645 | defsubr (&Ssignal_process); | |
7646 | defsubr (&Swaiting_for_user_input_p); | |
d888760c | 7647 | defsubr (&Sprocess_type); |
0fa1789e KH |
7648 | defsubr (&Sset_process_coding_system); |
7649 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
7650 | defsubr (&Sset_process_filter_multibyte); |
7651 | defsubr (&Sprocess_filter_multibyte_p); | |
934e2a68 | 7652 | defsubr (&Slist_system_processes); |
a20878b6 | 7653 | defsubr (&Sprocess_attributes); |
d0d6b7c5 JB |
7654 | } |
7655 | ||
6720a7fb JB |
7656 | \f |
7657 | #else /* not subprocesses */ | |
7658 | ||
7659 | #include <sys/types.h> | |
7660 | #include <errno.h> | |
934e2a68 EZ |
7661 | #include <sys/stat.h> |
7662 | #include <stdlib.h> | |
7663 | #include <fcntl.h> | |
d7306fe6 | 7664 | #include <setjmp.h> |
934e2a68 EZ |
7665 | #ifdef HAVE_UNISTD_H |
7666 | #include <unistd.h> | |
7667 | #endif | |
6720a7fb JB |
7668 | |
7669 | #include "lisp.h" | |
7670 | #include "systime.h" | |
5bbf78c1 | 7671 | #include "character.h" |
52a1b894 | 7672 | #include "coding.h" |
6720a7fb | 7673 | #include "termopts.h" |
81afb6d1 | 7674 | #include "sysselect.h" |
6720a7fb | 7675 | |
ff11dfa1 | 7676 | extern int frame_garbaged; |
6720a7fb | 7677 | |
f694e5d2 KH |
7678 | extern EMACS_TIME timer_check (); |
7679 | extern int timers_run; | |
6720a7fb | 7680 | |
8c57b2e5 | 7681 | Lisp_Object QCtype, QCname; |
9057ff80 | 7682 | |
6a1bab0e EZ |
7683 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
7684 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
7685 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
7686 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
7687 | ||
6720a7fb JB |
7688 | /* As described above, except assuming that there are no subprocesses: |
7689 | ||
7690 | Wait for timeout to elapse and/or keyboard input to be available. | |
7691 | ||
7692 | time_limit is: | |
7693 | timeout in seconds, or | |
7694 | zero for no limit, or | |
7695 | -1 means gobble data immediately available but don't wait for any. | |
7696 | ||
f76475ad | 7697 | read_kbd is a Lisp_Object: |
6720a7fb JB |
7698 | 0 to ignore keyboard input, or |
7699 | 1 to return when input is available, or | |
7700 | -1 means caller will actually read the input, so don't throw to | |
7701 | the quit handler. | |
b89a415a KS |
7702 | |
7703 | see full version for other parameters. We know that wait_proc will | |
7704 | always be NULL, since `subprocesses' isn't defined. | |
6720a7fb JB |
7705 | |
7706 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 7707 | output that arrives. |
6720a7fb | 7708 | |
e0f24100 | 7709 | Return true if we received input from any process. */ |
6720a7fb JB |
7710 | |
7711 | int | |
214d6069 KS |
7712 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
7713 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
7714 | int time_limit, microsecs, read_kbd, do_display; |
7715 | Lisp_Object wait_for_cell; | |
7716 | struct Lisp_Process *wait_proc; | |
7717 | int just_wait_proc; | |
6720a7fb | 7718 | { |
52fd88d3 | 7719 | register int nfds; |
f694e5d2 | 7720 | EMACS_TIME end_time, timeout; |
8db121c4 | 7721 | SELECT_TYPE waitchannels; |
f694e5d2 | 7722 | int xerrno; |
6720a7fb JB |
7723 | |
7724 | /* What does time_limit really mean? */ | |
7725 | if (time_limit || microsecs) | |
7726 | { | |
6720a7fb | 7727 | EMACS_GET_TIME (end_time); |
52fd88d3 | 7728 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
7729 | EMACS_ADD_TIME (end_time, end_time, timeout); |
7730 | } | |
6720a7fb JB |
7731 | |
7732 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 7733 | and then turn off any other atimers, |
6720a7fb | 7734 | because the select emulator uses alarms. */ |
75eb23f1 | 7735 | stop_polling (); |
30904ab7 | 7736 | turn_on_atimers (0); |
6720a7fb | 7737 | |
52fd88d3 | 7738 | while (1) |
6720a7fb | 7739 | { |
bae8d137 | 7740 | int timeout_reduced_for_timers = 0; |
6720a7fb | 7741 | |
6720a7fb JB |
7742 | /* If calling from keyboard input, do not quit |
7743 | since we want to return C-g as an input character. | |
7744 | Otherwise, do pending quit if requested. */ | |
b89a415a | 7745 | if (read_kbd >= 0) |
6720a7fb JB |
7746 | QUIT; |
7747 | ||
0a65b032 | 7748 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7749 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
7750 | break; |
7751 | ||
bae8d137 RS |
7752 | /* Compute time from now till when time limit is up */ |
7753 | /* Exit if already run out */ | |
52fd88d3 EZ |
7754 | if (time_limit == -1) |
7755 | { | |
7756 | /* -1 specified for timeout means | |
7757 | gobble output available now | |
7758 | but don't wait at all. */ | |
7759 | ||
7760 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
7761 | } | |
7762 | else if (time_limit || microsecs) | |
6720a7fb | 7763 | { |
f694e5d2 KH |
7764 | EMACS_GET_TIME (timeout); |
7765 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
7766 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
7767 | break; |
7768 | } | |
52fd88d3 EZ |
7769 | else |
7770 | { | |
7771 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
7772 | } | |
6720a7fb | 7773 | |
bae8d137 RS |
7774 | /* If our caller will not immediately handle keyboard events, |
7775 | run timer events directly. | |
7776 | (Callers that will immediately read keyboard events | |
7777 | call timer_delay on their own.) */ | |
f3fbd155 | 7778 | if (NILP (wait_for_cell)) |
bae8d137 RS |
7779 | { |
7780 | EMACS_TIME timer_delay; | |
0a65b032 | 7781 | |
9baacf76 | 7782 | do |
0a65b032 | 7783 | { |
9baacf76 GM |
7784 | int old_timers_run = timers_run; |
7785 | timer_delay = timer_check (1); | |
7786 | if (timers_run != old_timers_run && do_display) | |
7787 | /* We must retry, since a timer may have requeued itself | |
7788 | and that could alter the time delay. */ | |
3007ebfb | 7789 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
7790 | else |
7791 | break; | |
0a65b032 | 7792 | } |
9baacf76 | 7793 | while (!detect_input_pending ()); |
0a65b032 | 7794 | |
52fd88d3 | 7795 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7796 | if (read_kbd != 0 |
52fd88d3 EZ |
7797 | && requeued_events_pending_p ()) |
7798 | break; | |
7799 | ||
f694e5d2 | 7800 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
7801 | { |
7802 | EMACS_TIME difference; | |
f694e5d2 | 7803 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
7804 | if (EMACS_TIME_NEG_P (difference)) |
7805 | { | |
f694e5d2 | 7806 | timeout = timer_delay; |
bae8d137 RS |
7807 | timeout_reduced_for_timers = 1; |
7808 | } | |
7809 | } | |
7810 | } | |
7811 | ||
6720a7fb JB |
7812 | /* Cause C-g and alarm signals to take immediate action, |
7813 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7814 | if (read_kbd < 0) |
6720a7fb JB |
7815 | set_waiting_for_input (&timeout); |
7816 | ||
0a65b032 RS |
7817 | /* Wait till there is something to do. */ |
7818 | ||
b89a415a | 7819 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
7820 | FD_ZERO (&waitchannels); |
7821 | else | |
7822 | FD_SET (0, &waitchannels); | |
7823 | ||
ff11dfa1 | 7824 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7825 | reprocess its display stuff. */ |
5164ee8e | 7826 | if (frame_garbaged && do_display) |
0a65b032 RS |
7827 | { |
7828 | clear_waiting_for_input (); | |
3007ebfb | 7829 | redisplay_preserve_echo_area (15); |
b89a415a | 7830 | if (read_kbd < 0) |
0a65b032 RS |
7831 | set_waiting_for_input (&timeout); |
7832 | } | |
6720a7fb | 7833 | |
b89a415a | 7834 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
7835 | { |
7836 | nfds = 0; | |
7837 | FD_ZERO (&waitchannels); | |
7838 | } | |
7839 | else | |
7840 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7841 | &timeout); | |
f694e5d2 KH |
7842 | |
7843 | xerrno = errno; | |
6720a7fb JB |
7844 | |
7845 | /* Make C-g and alarm signals set flags again */ | |
7846 | clear_waiting_for_input (); | |
7847 | ||
7848 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7849 | do_pending_window_change (0); |
6720a7fb | 7850 | |
f694e5d2 KH |
7851 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7852 | /* We waited the full specified time, so return now. */ | |
7853 | break; | |
7854 | ||
6720a7fb JB |
7855 | if (nfds == -1) |
7856 | { | |
7857 | /* If the system call was interrupted, then go around the | |
7858 | loop again. */ | |
f694e5d2 | 7859 | if (xerrno == EINTR) |
8db121c4 | 7860 | FD_ZERO (&waitchannels); |
f694e5d2 | 7861 | else |
68c45bf0 | 7862 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 7863 | } |
89f1e540 | 7864 | #ifdef SOLARIS2 |
6720a7fb JB |
7865 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) |
7866 | /* System sometimes fails to deliver SIGIO. */ | |
7867 | kill (getpid (), SIGIO); | |
7868 | #endif | |
7324d660 | 7869 | #ifdef SIGIO |
b89a415a | 7870 | if (read_kbd && interrupt_input && (waitchannels & 1)) |
e643c5be | 7871 | kill (getpid (), SIGIO); |
7324d660 | 7872 | #endif |
6720a7fb | 7873 | |
f694e5d2 KH |
7874 | /* Check for keyboard input */ |
7875 | ||
b89a415a | 7876 | if (read_kbd |
78c1afb6 | 7877 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7878 | { |
78c1afb6 | 7879 | swallow_events (do_display); |
f694e5d2 | 7880 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7881 | break; |
78c1afb6 EZ |
7882 | } |
7883 | ||
52fd88d3 | 7884 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7885 | if (read_kbd |
52fd88d3 EZ |
7886 | && requeued_events_pending_p ()) |
7887 | break; | |
7888 | ||
f854a00b RS |
7889 | /* If wait_for_cell. check for keyboard input |
7890 | but don't run any timers. | |
7891 | ??? (It seems wrong to me to check for keyboard | |
7892 | input at all when wait_for_cell, but the code | |
7893 | has been this way since July 1994. | |
7894 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7895 | if (! NILP (wait_for_cell) |
f854a00b RS |
7896 | && detect_input_pending ()) |
7897 | { | |
7898 | swallow_events (do_display); | |
7899 | if (detect_input_pending ()) | |
7900 | break; | |
7901 | } | |
7902 | ||
0a65b032 | 7903 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7904 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7905 | break; |
6720a7fb JB |
7906 | } |
7907 | ||
a87b802f JB |
7908 | start_polling (); |
7909 | ||
6720a7fb JB |
7910 | return 0; |
7911 | } | |
7912 | ||
7913 | ||
e2ba787b PJ |
7914 | /* Don't confuse make-docfile by having two doc strings for this function. |
7915 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 7916 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
7917 | 0) |
7918 | (name) | |
6720a7fb JB |
7919 | register Lisp_Object name; |
7920 | { | |
7921 | return Qnil; | |
7922 | } | |
7923 | ||
e2ba787b PJ |
7924 | /* Don't confuse make-docfile by having two doc strings for this function. |
7925 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 7926 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7927 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7928 | 1, 1, 0, | |
7929 | 0) | |
7930 | (process) | |
52a1b894 EZ |
7931 | register Lisp_Object process; |
7932 | { | |
7933 | /* Ignore the argument and return the value of | |
7934 | inherit-process-coding-system. */ | |
7935 | return inherit_process_coding_system ? Qt : Qnil; | |
7936 | } | |
7937 | ||
6720a7fb JB |
7938 | /* Kill all processes associated with `buffer'. |
7939 | If `buffer' is nil, kill all processes. | |
7940 | Since we have no subprocesses, this does nothing. */ | |
7941 | ||
d9bb0c32 | 7942 | void |
6720a7fb JB |
7943 | kill_buffer_processes (buffer) |
7944 | Lisp_Object buffer; | |
7945 | { | |
7946 | } | |
7947 | ||
934e2a68 EZ |
7948 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7949 | 0, 0, 0, | |
7950 | doc: /* Return a list of numerical process IDs of all running processes. | |
7951 | If this functionality is unsupported, return nil. | |
7952 | ||
a20878b6 | 7953 | See `process-attributes' for getting attributes of a process given its ID. */) |
934e2a68 EZ |
7954 | () |
7955 | { | |
6a1bab0e | 7956 | return list_system_processes (); |
934e2a68 EZ |
7957 | } |
7958 | ||
a20878b6 MB |
7959 | DEFUN ("process-attributes", Fprocess_attributes, |
7960 | Sprocess_attributes, 1, 1, 0, | |
934e2a68 EZ |
7961 | doc: /* Return attributes of the process given by its PID, a number. |
7962 | ||
7963 | Value is an alist where each element is a cons cell of the form | |
7964 | ||
a7713d66 | 7965 | \(KEY . VALUE) |
934e2a68 EZ |
7966 | |
7967 | If this functionality is unsupported, the value is nil. | |
7968 | ||
7969 | See `list-system-processes' for getting a list of all process IDs. | |
7970 | ||
a7713d66 RW |
7971 | The KEYs of the attributes that this function may return are listed |
7972 | below, together with the type of the associated VALUE (in parentheses). | |
8f8b082a EZ |
7973 | Not all platforms support all of these attributes; unsupported |
7974 | attributes will not appear in the returned alist. | |
934e2a68 EZ |
7975 | Unless explicitly indicated otherwise, numbers can have either |
7976 | integer or floating point values. | |
7977 | ||
7978 | euid -- Effective user User ID of the process (number) | |
7979 | user -- User name corresponding to euid (string) | |
7980 | egid -- Effective user Group ID of the process (number) | |
7981 | group -- Group name corresponding to egid (string) | |
7982 | comm -- Command name (executable name only) (string) | |
7983 | state -- Process state code, such as "S", "R", or "T" (string) | |
7984 | ppid -- Parent process ID (number) | |
7985 | pgrp -- Process group ID (number) | |
7986 | sess -- Session ID, i.e. process ID of session leader (number) | |
7987 | ttname -- Controlling tty name (string) | |
7988 | tpgid -- ID of foreground process group on the process's tty (number) | |
7989 | minflt -- number of minor page faults (number) | |
7990 | majflt -- number of major page faults (number) | |
7991 | cminflt -- cumulative number of minor page faults (number) | |
7992 | cmajflt -- cumulative number of major page faults (number) | |
7993 | utime -- user time used by the process, in the (HIGH LOW USEC) format | |
7994 | stime -- system time used by the process, in the (HIGH LOW USEC) format | |
89c874cf | 7995 | time -- sum of utime and stime, in the (HIGH LOW USEC) format |
934e2a68 EZ |
7996 | cutime -- user time used by the process and its children, (HIGH LOW USEC) |
7997 | cstime -- system time used by the process and its children, (HIGH LOW USEC) | |
89c874cf | 7998 | ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format |
934e2a68 EZ |
7999 | pri -- priority of the process (number) |
8000 | nice -- nice value of the process (number) | |
8001 | thcount -- process thread count (number) | |
8002 | start -- time the process started, in the (HIGH LOW USEC) format | |
8003 | vsize -- virtual memory size of the process in KB's (number) | |
8004 | rss -- resident set size of the process in KB's (number) | |
8005 | etime -- elapsed time the process is running, in (HIGH LOW USEC) format | |
8006 | pcpu -- percents of CPU time used by the process (floating-point number) | |
8007 | pmem -- percents of total physical memory used by process's resident set | |
8008 | (floating-point number) | |
8009 | args -- command line which invoked the process (string). */) | |
8010 | (pid) | |
8011 | ||
8012 | Lisp_Object pid; | |
8013 | { | |
6a1bab0e | 8014 | return system_process_attributes (pid); |
934e2a68 EZ |
8015 | } |
8016 | ||
02b9b4fd | 8017 | void |
6720a7fb JB |
8018 | init_process () |
8019 | { | |
8020 | } | |
8021 | ||
02b9b4fd | 8022 | void |
6720a7fb JB |
8023 | syms_of_process () |
8024 | { | |
d67b4f80 | 8025 | QCtype = intern_c_string (":type"); |
9057ff80 | 8026 | staticpro (&QCtype); |
d67b4f80 | 8027 | QCname = intern_c_string (":name"); |
8c57b2e5 | 8028 | staticpro (&QCname); |
d67b4f80 | 8029 | QCtype = intern_c_string (":type"); |
6a1bab0e | 8030 | staticpro (&QCtype); |
d67b4f80 | 8031 | QCname = intern_c_string (":name"); |
6a1bab0e | 8032 | staticpro (&QCname); |
d67b4f80 | 8033 | Qeuid = intern_c_string ("euid"); |
6a1bab0e | 8034 | staticpro (&Qeuid); |
d67b4f80 | 8035 | Qegid = intern_c_string ("egid"); |
6a1bab0e | 8036 | staticpro (&Qegid); |
d67b4f80 | 8037 | Quser = intern_c_string ("user"); |
6a1bab0e | 8038 | staticpro (&Quser); |
d67b4f80 | 8039 | Qgroup = intern_c_string ("group"); |
6a1bab0e | 8040 | staticpro (&Qgroup); |
d67b4f80 | 8041 | Qcomm = intern_c_string ("comm"); |
6a1bab0e | 8042 | staticpro (&Qcomm); |
d67b4f80 | 8043 | Qstate = intern_c_string ("state"); |
6a1bab0e | 8044 | staticpro (&Qstate); |
d67b4f80 | 8045 | Qppid = intern_c_string ("ppid"); |
6a1bab0e | 8046 | staticpro (&Qppid); |
d67b4f80 | 8047 | Qpgrp = intern_c_string ("pgrp"); |
6a1bab0e | 8048 | staticpro (&Qpgrp); |
d67b4f80 | 8049 | Qsess = intern_c_string ("sess"); |
6a1bab0e | 8050 | staticpro (&Qsess); |
d67b4f80 | 8051 | Qttname = intern_c_string ("ttname"); |
6a1bab0e | 8052 | staticpro (&Qttname); |
d67b4f80 | 8053 | Qtpgid = intern_c_string ("tpgid"); |
6a1bab0e | 8054 | staticpro (&Qtpgid); |
d67b4f80 | 8055 | Qminflt = intern_c_string ("minflt"); |
6a1bab0e | 8056 | staticpro (&Qminflt); |
d67b4f80 | 8057 | Qmajflt = intern_c_string ("majflt"); |
6a1bab0e | 8058 | staticpro (&Qmajflt); |
d67b4f80 | 8059 | Qcminflt = intern_c_string ("cminflt"); |
6a1bab0e | 8060 | staticpro (&Qcminflt); |
d67b4f80 | 8061 | Qcmajflt = intern_c_string ("cmajflt"); |
6a1bab0e | 8062 | staticpro (&Qcmajflt); |
d67b4f80 | 8063 | Qutime = intern_c_string ("utime"); |
6a1bab0e | 8064 | staticpro (&Qutime); |
d67b4f80 | 8065 | Qstime = intern_c_string ("stime"); |
6a1bab0e | 8066 | staticpro (&Qstime); |
d67b4f80 | 8067 | Qtime = intern_c_string ("time"); |
6a1bab0e | 8068 | staticpro (&Qtime); |
d67b4f80 | 8069 | Qcutime = intern_c_string ("cutime"); |
6a1bab0e | 8070 | staticpro (&Qcutime); |
d67b4f80 | 8071 | Qcstime = intern_c_string ("cstime"); |
6a1bab0e | 8072 | staticpro (&Qcstime); |
d67b4f80 | 8073 | Qctime = intern_c_string ("ctime"); |
6a1bab0e | 8074 | staticpro (&Qctime); |
d67b4f80 | 8075 | Qpri = intern_c_string ("pri"); |
6a1bab0e | 8076 | staticpro (&Qpri); |
d67b4f80 | 8077 | Qnice = intern_c_string ("nice"); |
6a1bab0e | 8078 | staticpro (&Qnice); |
d67b4f80 | 8079 | Qthcount = intern_c_string ("thcount"); |
6a1bab0e | 8080 | staticpro (&Qthcount); |
d67b4f80 | 8081 | Qstart = intern_c_string ("start"); |
6a1bab0e | 8082 | staticpro (&Qstart); |
d67b4f80 | 8083 | Qvsize = intern_c_string ("vsize"); |
6a1bab0e | 8084 | staticpro (&Qvsize); |
d67b4f80 | 8085 | Qrss = intern_c_string ("rss"); |
6a1bab0e | 8086 | staticpro (&Qrss); |
d67b4f80 | 8087 | Qetime = intern_c_string ("etime"); |
6a1bab0e | 8088 | staticpro (&Qetime); |
d67b4f80 | 8089 | Qpcpu = intern_c_string ("pcpu"); |
6a1bab0e | 8090 | staticpro (&Qpcpu); |
d67b4f80 | 8091 | Qpmem = intern_c_string ("pmem"); |
6a1bab0e | 8092 | staticpro (&Qpmem); |
d67b4f80 | 8093 | Qargs = intern_c_string ("args"); |
6a1bab0e | 8094 | staticpro (&Qargs); |
9057ff80 | 8095 | |
6720a7fb | 8096 | defsubr (&Sget_buffer_process); |
52a1b894 | 8097 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 8098 | defsubr (&Slist_system_processes); |
a20878b6 | 8099 | defsubr (&Sprocess_attributes); |
6720a7fb JB |
8100 | } |
8101 | ||
8102 | \f | |
8103 | #endif /* not subprocesses */ | |
6b61353c KH |
8104 | |
8105 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
8106 | (do not change this comment) */ |