Commit | Line | Data |
---|---|---|
d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, |
3 | 1996, 1998, 1999, 2001, 2002, 2003, 2004, | |
8cabe764 | 4 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 10 | the Free Software Foundation; either version 3, or (at your option) |
d0d6b7c5 JB |
11 | any later version. |
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 | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
d0d6b7c5 JB |
22 | |
23 | ||
18160b98 | 24 | #include <config.h> |
68c45bf0 PE |
25 | #include <signal.h> |
26 | ||
6720a7fb JB |
27 | /* This file is split into two parts by the following preprocessor |
28 | conditional. The 'then' clause contains all of the support for | |
29 | asynchronous subprocesses. The 'else' clause contains stub | |
30 | versions of some of the asynchronous subprocess routines that are | |
31 | often called elsewhere in Emacs, so we don't have to #ifdef the | |
32 | sections that call them. */ | |
33 | ||
34 | \f | |
d0d6b7c5 | 35 | #ifdef subprocesses |
d0d6b7c5 JB |
36 | |
37 | #include <stdio.h> | |
38 | #include <errno.h> | |
39 | #include <setjmp.h> | |
40 | #include <sys/types.h> /* some typedefs are used in sys/file.h */ | |
41 | #include <sys/file.h> | |
42 | #include <sys/stat.h> | |
2026418c YM |
43 | #ifdef HAVE_INTTYPES_H |
44 | #include <inttypes.h> | |
45 | #endif | |
93b4f699 RS |
46 | #ifdef HAVE_UNISTD_H |
47 | #include <unistd.h> | |
48 | #endif | |
d0d6b7c5 | 49 | |
f22ac298 | 50 | #if defined(WINDOWSNT) || defined(UNIX98_PTYS) |
e98d950b RS |
51 | #include <stdlib.h> |
52 | #include <fcntl.h> | |
53 | #endif /* not WINDOWSNT */ | |
54 | ||
d0d6b7c5 JB |
55 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
56 | #include <sys/socket.h> | |
57 | #include <netdb.h> | |
58 | #include <netinet/in.h> | |
59 | #include <arpa/inet.h> | |
e690ca94 KS |
60 | |
61 | /* Are local (unix) sockets supported? */ | |
4624371d | 62 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
63 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
64 | #define AF_LOCAL AF_UNIX | |
65 | #endif | |
66 | #ifdef AF_LOCAL | |
67 | #define HAVE_LOCAL_SOCKETS | |
68 | #include <sys/un.h> | |
69 | #endif | |
70 | #endif | |
d0d6b7c5 JB |
71 | #endif /* HAVE_SOCKETS */ |
72 | ||
827a1788 | 73 | /* TERM is a poor-man's SLIP, used on GNU/Linux. */ |
1d2c16fa RS |
74 | #ifdef TERM |
75 | #include <client.h> | |
76 | #endif | |
77 | ||
e39a993c | 78 | #if defined(BSD_SYSTEM) |
d0d6b7c5 | 79 | #include <sys/ioctl.h> |
0ad77c54 | 80 | #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5) |
d0d6b7c5 JB |
81 | #include <fcntl.h> |
82 | #endif /* HAVE_PTYS and no O_NDELAY */ | |
e39a993c | 83 | #endif /* BSD_SYSTEM */ |
d0d6b7c5 | 84 | |
99e3d726 RS |
85 | #ifdef BROKEN_O_NONBLOCK |
86 | #undef O_NONBLOCK | |
87 | #endif /* BROKEN_O_NONBLOCK */ | |
88 | ||
d0d6b7c5 JB |
89 | #ifdef NEED_BSDTTY |
90 | #include <bsdtty.h> | |
91 | #endif | |
92 | ||
6b61353c KH |
93 | /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */ |
94 | #ifdef HAVE_SOCKETS | |
95 | #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H) | |
96 | /* sys/ioctl.h may have been included already */ | |
97 | #ifndef SIOCGIFADDR | |
98 | #include <sys/ioctl.h> | |
99 | #endif | |
100 | #include <net/if.h> | |
101 | #endif | |
102 | #endif | |
103 | ||
d0d6b7c5 JB |
104 | #ifdef IRIS |
105 | #include <sys/sysmacros.h> /* for "minor" */ | |
106 | #endif /* not IRIS */ | |
177c0ea7 | 107 | |
e62cab61 DL |
108 | #ifdef HAVE_SYS_WAIT |
109 | #include <sys/wait.h> | |
110 | #endif | |
d0d6b7c5 | 111 | |
08116b48 CY |
112 | #ifdef HAVE_RES_INIT |
113 | #include <netinet/in.h> | |
114 | #include <arpa/nameser.h> | |
115 | #include <resolv.h> | |
116 | #endif | |
117 | ||
fa8459a3 | 118 | #include "lisp.h" |
d0d6b7c5 | 119 | #include "systime.h" |
36ebaafa | 120 | #include "systty.h" |
d0d6b7c5 | 121 | |
d0d6b7c5 JB |
122 | #include "window.h" |
123 | #include "buffer.h" | |
5bbf78c1 | 124 | #include "character.h" |
0fa1789e | 125 | #include "coding.h" |
d0d6b7c5 | 126 | #include "process.h" |
428a555e | 127 | #include "frame.h" |
d0d6b7c5 JB |
128 | #include "termhooks.h" |
129 | #include "termopts.h" | |
130 | #include "commands.h" | |
3ec68006 | 131 | #include "keyboard.h" |
ececcbec | 132 | #include "blockinput.h" |
dfcf069d | 133 | #include "dispextern.h" |
e0016554 | 134 | #include "composite.h" |
30904ab7 | 135 | #include "atimer.h" |
d0d6b7c5 | 136 | |
dd2281ae | 137 | Lisp_Object Qprocessp; |
324e68ba | 138 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 139 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
e1652a86 KS |
140 | Lisp_Object Qlocal, Qipv4, Qdatagram; |
141 | #ifdef AF_INET6 | |
142 | Lisp_Object Qipv6; | |
143 | #endif | |
9057ff80 | 144 | Lisp_Object QCname, QCbuffer, QChost, QCservice, QCtype; |
e690ca94 | 145 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 146 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 147 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
7392e23c | 148 | Lisp_Object QCfilter_multibyte; |
6545aada | 149 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
150 | /* QCfamily is declared and initialized in xfaces.c, |
151 | QCfilter in keyboard.c. */ | |
152 | extern Lisp_Object QCfamily, QCfilter; | |
153 | ||
d0d6b7c5 JB |
154 | /* Qexit is declared and initialized in eval.c. */ |
155 | ||
e0f712ba AC |
156 | /* QCfamily is defined in xfaces.c. */ |
157 | extern Lisp_Object QCfamily; | |
158 | /* QCfilter is defined in keyboard.c. */ | |
159 | extern Lisp_Object QCfilter; | |
160 | ||
d0d6b7c5 | 161 | /* a process object is a network connection when its childp field is neither |
365aee82 | 162 | Qt nor Qnil but is instead a property list (KEY VAL ...). */ |
d0d6b7c5 JB |
163 | |
164 | #ifdef HAVE_SOCKETS | |
8e50cc2d SM |
165 | #define NETCONN_P(p) (CONSP (XPROCESS (p)->childp)) |
166 | #define NETCONN1_P(p) (CONSP ((p)->childp)) | |
d0d6b7c5 JB |
167 | #else |
168 | #define NETCONN_P(p) 0 | |
e690ca94 | 169 | #define NETCONN1_P(p) 0 |
d0d6b7c5 JB |
170 | #endif /* HAVE_SOCKETS */ |
171 | ||
172 | /* Define first descriptor number available for subprocesses. */ | |
173 | #ifdef VMS | |
174 | #define FIRST_PROC_DESC 1 | |
175 | #else /* Not VMS */ | |
176 | #define FIRST_PROC_DESC 3 | |
177 | #endif | |
178 | ||
179 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
180 | testing SIGCHLD. */ | |
181 | ||
182 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
183 | #define SIGCHLD SIGCLD | |
184 | #endif /* SIGCLD */ | |
185 | ||
186 | #include "syssignal.h" | |
187 | ||
889255b4 | 188 | #include "syswait.h" |
d0d6b7c5 | 189 | |
d9e7c622 | 190 | extern char *get_operating_system_release (); |
41d03b9a | 191 | |
3ec68006 | 192 | #ifndef USE_CRT_DLL |
b062d1fe | 193 | extern int errno; |
3ec68006 | 194 | #endif |
b062d1fe | 195 | #ifdef VMS |
d0d6b7c5 | 196 | extern char *sys_errlist[]; |
b062d1fe | 197 | #endif |
d0d6b7c5 | 198 | |
5f0929a7 RS |
199 | #ifndef HAVE_H_ERRNO |
200 | extern int h_errno; | |
201 | #endif | |
202 | ||
d0d6b7c5 JB |
203 | /* t means use pty, nil means use a pipe, |
204 | maybe other values to come. */ | |
dd2281ae | 205 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 | 206 | |
17d02632 KH |
207 | /* These next two vars are non-static since sysdep.c uses them in the |
208 | emulation of `select'. */ | |
d0d6b7c5 | 209 | /* Number of events of change of status of a process. */ |
17d02632 | 210 | int process_tick; |
d0d6b7c5 | 211 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 212 | int update_tick; |
d0d6b7c5 | 213 | |
dd2a17ab KS |
214 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
215 | ||
216 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
217 | #undef NON_BLOCKING_CONNECT | |
218 | #else | |
219 | #ifndef NON_BLOCKING_CONNECT | |
220 | #ifdef HAVE_SOCKETS | |
221 | #ifdef HAVE_SELECT | |
222 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
223 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
224 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
225 | #define NON_BLOCKING_CONNECT | |
226 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
227 | #endif /* O_NONBLOCK || O_NDELAY */ | |
228 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
229 | #endif /* HAVE_SELECT */ | |
230 | #endif /* HAVE_SOCKETS */ | |
231 | #endif /* NON_BLOCKING_CONNECT */ | |
232 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
233 | ||
e690ca94 KS |
234 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
235 | this system. We need to read full packets, so we need a | |
236 | "non-destructive" select. So we require either native select, | |
237 | or emulation of select using FIONREAD. */ | |
238 | ||
e690ca94 KS |
239 | #ifdef BROKEN_DATAGRAM_SOCKETS |
240 | #undef DATAGRAM_SOCKETS | |
241 | #else | |
242 | #ifndef DATAGRAM_SOCKETS | |
243 | #ifdef HAVE_SOCKETS | |
244 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
245 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
246 | #define DATAGRAM_SOCKETS | |
247 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
248 | #endif /* HAVE_SELECT || FIONREAD */ | |
249 | #endif /* HAVE_SOCKETS */ | |
250 | #endif /* DATAGRAM_SOCKETS */ | |
251 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
252 | ||
dd2a17ab KS |
253 | #ifdef TERM |
254 | #undef NON_BLOCKING_CONNECT | |
e690ca94 | 255 | #undef DATAGRAM_SOCKETS |
dd2a17ab KS |
256 | #endif |
257 | ||
6b61353c KH |
258 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
259 | #ifdef EMACS_HAS_USECS | |
260 | #define ADAPTIVE_READ_BUFFERING | |
261 | #endif | |
262 | #endif | |
263 | ||
264 | #ifdef ADAPTIVE_READ_BUFFERING | |
265 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
266 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
267 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
268 | ||
db853b7a KS |
269 | /* Number of processes which have a non-zero read_output_delay, |
270 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
271 | |
272 | static int process_output_delay_count; | |
273 | ||
db853b7a | 274 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
275 | |
276 | static int process_output_skip; | |
277 | ||
278 | /* Non-nil means to delay reading process output to improve buffering. | |
279 | A value of t means that delay is reset after each send, any other | |
db853b7a KS |
280 | non-nil value does not reset the delay. A value of nil disables |
281 | adaptive read buffering completely. */ | |
6b61353c KH |
282 | static Lisp_Object Vprocess_adaptive_read_buffering; |
283 | #else | |
284 | #define process_output_delay_count 0 | |
285 | #endif | |
286 | ||
e690ca94 | 287 | |
5886acf9 | 288 | #include "sysselect.h" |
d0d6b7c5 | 289 | |
ff6daed3 KS |
290 | static int keyboard_bit_set P_ ((SELECT_TYPE *)); |
291 | static void deactivate_process P_ ((Lisp_Object)); | |
292 | static void status_notify P_ ((struct Lisp_Process *)); | |
293 | static int read_process_output P_ ((Lisp_Object, int)); | |
41d03b9a | 294 | |
583dcae4 | 295 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 296 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 297 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
298 | #define POLL_FOR_INPUT |
299 | #endif | |
300 | ||
84af9896 RS |
301 | static Lisp_Object get_process (); |
302 | static void exec_sentinel (); | |
303 | ||
304 | extern EMACS_TIME timer_check (); | |
305 | extern int timers_run; | |
306 | \f | |
a69281ff | 307 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 308 | |
dd2281ae RS |
309 | static SELECT_TYPE input_wait_mask; |
310 | ||
994d9841 | 311 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
312 | |
313 | static SELECT_TYPE non_keyboard_wait_mask; | |
314 | ||
994d9841 | 315 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
316 | |
317 | static SELECT_TYPE non_process_wait_mask; | |
318 | ||
994d9841 NR |
319 | /* Mask for the gpm mouse input descriptor. */ |
320 | ||
321 | static SELECT_TYPE gpm_wait_mask; | |
322 | ||
bad49fc7 | 323 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
324 | /* Mask of bits indicating the descriptors that we wait for connect to |
325 | complete on. Once they complete, they are removed from this mask | |
326 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
327 | ||
328 | static SELECT_TYPE connect_wait_mask; | |
329 | ||
330 | /* Number of bits set in connect_wait_mask. */ | |
331 | static int num_pending_connects; | |
332 | ||
bad49fc7 KS |
333 | #define IF_NON_BLOCKING_CONNECT(s) s |
334 | #else | |
335 | #define IF_NON_BLOCKING_CONNECT(s) | |
336 | #endif | |
337 | ||
7d0e672e RS |
338 | /* The largest descriptor currently in use for a process object. */ |
339 | static int max_process_desc; | |
340 | ||
a69281ff RS |
341 | /* The largest descriptor currently in use for keyboard input. */ |
342 | static int max_keyboard_desc; | |
d0d6b7c5 | 343 | |
994d9841 NR |
344 | /* The largest descriptor currently in use for gpm mouse input. */ |
345 | static int max_gpm_desc; | |
346 | ||
dd2281ae RS |
347 | /* Nonzero means delete a process right away if it exits. */ |
348 | static int delete_exited_processes; | |
d0d6b7c5 JB |
349 | |
350 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 351 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
352 | |
353 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 354 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
355 | |
356 | /* Buffered-ahead input char from process, indexed by channel. | |
357 | -1 means empty (no char is buffered). | |
358 | Used on sys V where the only way to tell if there is any | |
359 | output from the process is to read at least one char. | |
360 | Always -1 on systems that support FIONREAD. */ | |
361 | ||
e98d950b RS |
362 | /* Don't make static; need to access externally. */ |
363 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 364 | |
0fa1789e | 365 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
366 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
367 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 368 | |
e690ca94 KS |
369 | #ifdef DATAGRAM_SOCKETS |
370 | /* Table of `partner address' for datagram sockets. */ | |
371 | struct sockaddr_and_len { | |
372 | struct sockaddr *sa; | |
373 | int len; | |
374 | } datagram_address[MAXDESC]; | |
375 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 376 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
377 | #else |
378 | #define DATAGRAM_CHAN_P(chan) (0) | |
379 | #define DATAGRAM_CONN_P(proc) (0) | |
380 | #endif | |
381 | ||
93b4f699 RS |
382 | /* Maximum number of bytes to send to a pty without an eof. */ |
383 | static int pty_max_bytes; | |
3b9a3dfa | 384 | |
84af9896 RS |
385 | /* Nonzero means don't run process sentinels. This is used |
386 | when exiting. */ | |
387 | int inhibit_sentinels; | |
388 | ||
875e6b94 | 389 | #ifdef HAVE_PTYS |
e62cab61 DL |
390 | #ifdef HAVE_PTY_H |
391 | #include <pty.h> | |
392 | #endif | |
875e6b94 | 393 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
394 | |
395 | static char pty_name[24]; | |
875e6b94 | 396 | #endif |
d0d6b7c5 JB |
397 | \f |
398 | /* Compute the Lisp form of the process status, p->status, from | |
399 | the numeric status that was returned by `wait'. */ | |
400 | ||
ff6daed3 | 401 | static Lisp_Object status_convert (); |
f9738840 | 402 | |
ff6daed3 | 403 | static void |
d0d6b7c5 JB |
404 | update_status (p) |
405 | struct Lisp_Process *p; | |
406 | { | |
407 | union { int i; WAITTYPE wt; } u; | |
6bfd98e7 SM |
408 | eassert (p->raw_status_new); |
409 | u.i = p->raw_status; | |
d0d6b7c5 | 410 | p->status = status_convert (u.wt); |
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 |
d0d6b7c5 JB |
418 | status_convert (w) |
419 | WAITTYPE w; | |
420 | { | |
421 | if (WIFSTOPPED (w)) | |
422 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
423 | else if (WIFEXITED (w)) | |
424 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
425 | WCOREDUMP (w) ? Qt : Qnil)); | |
426 | else if (WIFSIGNALED (w)) | |
427 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
428 | WCOREDUMP (w) ? Qt : Qnil)); | |
429 | else | |
430 | return Qrun; | |
431 | } | |
432 | ||
433 | /* Given a status-list, extract the three pieces of information | |
434 | and store them individually through the three pointers. */ | |
435 | ||
ff6daed3 | 436 | static void |
d0d6b7c5 JB |
437 | decode_status (l, symbol, code, coredump) |
438 | Lisp_Object l; | |
439 | Lisp_Object *symbol; | |
440 | int *code; | |
441 | int *coredump; | |
442 | { | |
443 | Lisp_Object tem; | |
444 | ||
bcd69aea | 445 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
446 | { |
447 | *symbol = l; | |
448 | *code = 0; | |
449 | *coredump = 0; | |
450 | } | |
451 | else | |
452 | { | |
70949dac KR |
453 | *symbol = XCAR (l); |
454 | tem = XCDR (l); | |
455 | *code = XFASTINT (XCAR (tem)); | |
456 | tem = XCDR (tem); | |
d0d6b7c5 JB |
457 | *coredump = !NILP (tem); |
458 | } | |
459 | } | |
460 | ||
461 | /* Return a string describing a process status list. */ | |
462 | ||
116c423c KS |
463 | static Lisp_Object |
464 | status_message (p) | |
465 | struct Lisp_Process *p; | |
d0d6b7c5 | 466 | { |
116c423c | 467 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
468 | Lisp_Object symbol; |
469 | int code, coredump; | |
470 | Lisp_Object string, string2; | |
471 | ||
472 | decode_status (status, &symbol, &code, &coredump); | |
473 | ||
474 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
475 | { | |
68c45bf0 | 476 | char *signame; |
ca9c0567 | 477 | synchronize_system_messages_locale (); |
68c45bf0 | 478 | signame = strsignal (code); |
b97ad9ea RS |
479 | if (signame == 0) |
480 | signame = "unknown"; | |
481 | string = build_string (signame); | |
d0d6b7c5 | 482 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
a814cc69 | 483 | SSET (string, 0, DOWNCASE (SREF (string, 0))); |
d0d6b7c5 JB |
484 | return concat2 (string, string2); |
485 | } | |
486 | else if (EQ (symbol, Qexit)) | |
487 | { | |
116c423c KS |
488 | if (NETCONN1_P (p)) |
489 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
490 | if (code == 0) |
491 | return build_string ("finished\n"); | |
f2980264 | 492 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 493 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
494 | return concat3 (build_string ("exited abnormally with code "), |
495 | string, string2); | |
d0d6b7c5 | 496 | } |
dd2a17ab KS |
497 | else if (EQ (symbol, Qfailed)) |
498 | { | |
499 | string = Fnumber_to_string (make_number (code)); | |
500 | string2 = build_string ("\n"); | |
e690ca94 KS |
501 | return concat3 (build_string ("failed with code "), |
502 | string, string2); | |
dd2a17ab | 503 | } |
d0d6b7c5 JB |
504 | else |
505 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
506 | } | |
507 | \f | |
508 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 509 | |
875e6b94 KH |
510 | /* Open an available pty, returning a file descriptor. |
511 | Return -1 on failure. | |
512 | The file name of the terminal corresponding to the pty | |
513 | is left in the variable pty_name. */ | |
514 | ||
ff6daed3 | 515 | static int |
d0d6b7c5 JB |
516 | allocate_pty () |
517 | { | |
dfcf069d | 518 | register int c, i; |
d0d6b7c5 JB |
519 | int fd; |
520 | ||
521 | #ifdef PTY_ITERATION | |
522 | PTY_ITERATION | |
523 | #else | |
524 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
525 | for (i = 0; i < 16; i++) | |
526 | #endif | |
527 | { | |
26d7389d | 528 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
529 | #ifdef PTY_NAME_SPRINTF |
530 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
531 | #else |
532 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
533 | #endif /* no PTY_NAME_SPRINTF */ |
534 | ||
4d7c105e RS |
535 | #ifdef PTY_OPEN |
536 | PTY_OPEN; | |
537 | #else /* no PTY_OPEN */ | |
34967d0f | 538 | { |
34967d0f SM |
539 | # ifdef IRIS |
540 | /* Unusual IRIS code */ | |
541 | *ptyv = emacs_open ("/dev/ptc", O_RDWR | O_NDELAY, 0); | |
542 | if (fd < 0) | |
543 | return -1; | |
544 | if (fstat (fd, &stb) < 0) | |
545 | return -1; | |
546 | # else /* not IRIS */ | |
547 | { /* Some systems name their pseudoterminals so that there are gaps in | |
548 | the usual sequence - for example, on HP9000/S700 systems, there | |
549 | are no pseudoterminals with names ending in 'f'. So we wait for | |
550 | three failures in a row before deciding that we've reached the | |
551 | end of the ptys. */ | |
552 | int failed_count = 0; | |
f3d9532b | 553 | |
34967d0f SM |
554 | if (stat (pty_name, &stb) < 0) |
555 | { | |
556 | failed_count++; | |
557 | if (failed_count >= 3) | |
558 | return -1; | |
559 | } | |
560 | else | |
561 | failed_count = 0; | |
32676c08 | 562 | } |
34967d0f SM |
563 | # ifdef O_NONBLOCK |
564 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
565 | # else | |
566 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
567 | # endif | |
568 | # endif /* not IRIS */ | |
569 | } | |
4d7c105e | 570 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
571 | |
572 | if (fd >= 0) | |
573 | { | |
574 | /* check to make certain that both sides are available | |
575 | this avoids a nasty yet stupid bug in rlogins */ | |
576 | #ifdef PTY_TTY_NAME_SPRINTF | |
577 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 JB |
578 | #else |
579 | sprintf (pty_name, "/dev/tty%c%x", c, i); | |
d0d6b7c5 | 580 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
581 | if (access (pty_name, 6) != 0) |
582 | { | |
68c45bf0 | 583 | emacs_close (fd); |
34967d0f | 584 | # if !defined(IRIS) && !defined(__sgi) |
d0d6b7c5 | 585 | continue; |
34967d0f | 586 | # else |
d0d6b7c5 | 587 | return -1; |
34967d0f | 588 | # endif /* IRIS */ |
d0d6b7c5 | 589 | } |
d0d6b7c5 JB |
590 | setup_pty (fd); |
591 | return fd; | |
592 | } | |
593 | } | |
594 | return -1; | |
595 | } | |
596 | #endif /* HAVE_PTYS */ | |
597 | \f | |
ff6daed3 | 598 | static Lisp_Object |
d0d6b7c5 JB |
599 | make_process (name) |
600 | Lisp_Object name; | |
601 | { | |
602 | register Lisp_Object val, tem, name1; | |
603 | register struct Lisp_Process *p; | |
604 | char suffix[10]; | |
605 | register int i; | |
606 | ||
98423852 | 607 | p = allocate_process (); |
23d6bb9c | 608 | |
60f0fb11 SM |
609 | p->infd = -1; |
610 | p->outfd = -1; | |
611 | p->tick = 0; | |
612 | p->update_tick = 0; | |
6bfd98e7 | 613 | p->pid = 0; |
fd41ad98 | 614 | p->pty_flag = 0; |
6bfd98e7 | 615 | p->raw_status_new = 0; |
d0d6b7c5 JB |
616 | p->status = Qrun; |
617 | p->mark = Fmake_marker (); | |
618 | ||
6b61353c | 619 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
620 | p->adaptive_read_buffering = 0; |
621 | p->read_output_delay = 0; | |
622 | p->read_output_skip = 0; | |
6b61353c KH |
623 | #endif |
624 | ||
d0d6b7c5 JB |
625 | /* If name is already in use, modify it until it is unused. */ |
626 | ||
627 | name1 = name; | |
628 | for (i = 1; ; i++) | |
629 | { | |
630 | tem = Fget_process (name1); | |
631 | if (NILP (tem)) break; | |
632 | sprintf (suffix, "<%d>", i); | |
633 | name1 = concat2 (name, build_string (suffix)); | |
634 | } | |
635 | name = name1; | |
636 | p->name = name; | |
23d6bb9c | 637 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
638 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
639 | return val; | |
640 | } | |
641 | ||
ff6daed3 | 642 | static void |
d0d6b7c5 JB |
643 | remove_process (proc) |
644 | register Lisp_Object proc; | |
645 | { | |
646 | register Lisp_Object pair; | |
647 | ||
648 | pair = Frassq (proc, Vprocess_alist); | |
649 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
650 | |
651 | deactivate_process (proc); | |
652 | } | |
03f04413 KH |
653 | |
654 | /* Setup coding systems of PROCESS. */ | |
655 | ||
656 | void | |
657 | setup_process_coding_systems (process) | |
658 | Lisp_Object process; | |
659 | { | |
660 | struct Lisp_Process *p = XPROCESS (process); | |
60f0fb11 SM |
661 | int inch = p->infd; |
662 | int outch = p->outfd; | |
8f924df7 | 663 | Lisp_Object coding_system; |
03f04413 | 664 | |
20f1ef2e KH |
665 | if (inch < 0 || outch < 0) |
666 | return; | |
667 | ||
03f04413 KH |
668 | if (!proc_decode_coding_system[inch]) |
669 | proc_decode_coding_system[inch] | |
670 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
8f924df7 | 671 | coding_system = p->decode_coding_system; |
03f04413 KH |
672 | if (! NILP (p->filter)) |
673 | { | |
60f0fb11 | 674 | if (!p->filter_multibyte) |
8f924df7 | 675 | coding_system = raw_text_coding_system (coding_system); |
03f04413 KH |
676 | } |
677 | else if (BUFFERP (p->buffer)) | |
678 | { | |
679 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
8f924df7 | 680 | coding_system = raw_text_coding_system (coding_system); |
03f04413 | 681 | } |
8f924df7 | 682 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); |
03f04413 KH |
683 | |
684 | if (!proc_encode_coding_system[outch]) | |
685 | proc_encode_coding_system[outch] | |
686 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
687 | setup_coding_system (p->encode_coding_system, | |
688 | proc_encode_coding_system[outch]); | |
689 | } | |
d0d6b7c5 JB |
690 | \f |
691 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
692 | doc: /* Return t if OBJECT is a process. */) |
693 | (object) | |
4ee3e309 | 694 | Lisp_Object object; |
d0d6b7c5 | 695 | { |
4ee3e309 | 696 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
697 | } |
698 | ||
699 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
700 | doc: /* Return the process named NAME, or nil if there is none. */) |
701 | (name) | |
d0d6b7c5 JB |
702 | register Lisp_Object name; |
703 | { | |
bcd69aea | 704 | if (PROCESSP (name)) |
d0d6b7c5 | 705 | return name; |
b7826503 | 706 | CHECK_STRING (name); |
d0d6b7c5 JB |
707 | return Fcdr (Fassoc (name, Vprocess_alist)); |
708 | } | |
709 | ||
710 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
711 | doc: /* Return the (or a) process associated with BUFFER. |
712 | BUFFER may be a buffer or the name of one. */) | |
713 | (buffer) | |
4ee3e309 | 714 | register Lisp_Object buffer; |
d0d6b7c5 JB |
715 | { |
716 | register Lisp_Object buf, tail, proc; | |
717 | ||
4ee3e309 EN |
718 | if (NILP (buffer)) return Qnil; |
719 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
720 | if (NILP (buf)) return Qnil; |
721 | ||
99784d63 | 722 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 723 | { |
99784d63 | 724 | proc = Fcdr (XCAR (tail)); |
bcd69aea | 725 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
726 | return proc; |
727 | } | |
728 | return Qnil; | |
729 | } | |
730 | ||
ebb9e16f JB |
731 | /* This is how commands for the user decode process arguments. It |
732 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
733 | Buffers denote the first process in the buffer, and nil denotes the | |
734 | current buffer. */ | |
d0d6b7c5 | 735 | |
77b221b1 | 736 | static Lisp_Object |
d0d6b7c5 JB |
737 | get_process (name) |
738 | register Lisp_Object name; | |
739 | { | |
1619761d KH |
740 | register Lisp_Object proc, obj; |
741 | if (STRINGP (name)) | |
742 | { | |
743 | obj = Fget_process (name); | |
744 | if (NILP (obj)) | |
745 | obj = Fget_buffer (name); | |
746 | if (NILP (obj)) | |
d5db4077 | 747 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
748 | } |
749 | else if (NILP (name)) | |
750 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 751 | else |
1619761d KH |
752 | obj = name; |
753 | ||
754 | /* Now obj should be either a buffer object or a process object. | |
755 | */ | |
756 | if (BUFFERP (obj)) | |
d0d6b7c5 | 757 | { |
1619761d | 758 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 759 | if (NILP (proc)) |
d5db4077 | 760 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 761 | } |
d0d6b7c5 | 762 | else |
1619761d | 763 | { |
b7826503 | 764 | CHECK_PROCESS (obj); |
1619761d KH |
765 | proc = obj; |
766 | } | |
767 | return proc; | |
d0d6b7c5 JB |
768 | } |
769 | ||
a5cfdda8 KS |
770 | |
771 | #ifdef SIGCHLD | |
772 | /* Fdelete_process promises to immediately forget about the process, but in | |
773 | reality, Emacs needs to remember those processes until they have been | |
774 | treated by sigchld_handler; otherwise this handler would consider the | |
775 | process as being synchronous and say that the synchronous process is | |
776 | dead. */ | |
777 | static Lisp_Object deleted_pid_list; | |
778 | #endif | |
779 | ||
d0d6b7c5 | 780 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
781 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
782 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
783 | nil, indicating the current buffer's process. */) | |
784 | (process) | |
4ee3e309 | 785 | register Lisp_Object process; |
d0d6b7c5 | 786 | { |
ff6daed3 KS |
787 | register struct Lisp_Process *p; |
788 | ||
4ee3e309 | 789 | process = get_process (process); |
ff6daed3 KS |
790 | p = XPROCESS (process); |
791 | ||
6bfd98e7 | 792 | p->raw_status_new = 0; |
ff6daed3 | 793 | if (NETCONN1_P (p)) |
d0d6b7c5 | 794 | { |
ff6daed3 | 795 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
60f0fb11 | 796 | p->tick = ++process_tick; |
ff6daed3 | 797 | status_notify (p); |
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 KS |
828 | status_notify (p); |
829 | } | |
d0d6b7c5 | 830 | } |
4ee3e309 | 831 | remove_process (process); |
d0d6b7c5 JB |
832 | return Qnil; |
833 | } | |
834 | \f | |
835 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
836 | doc: /* Return the status of PROCESS. |
837 | The returned value is one of the following symbols: | |
838 | run -- for a process that is running. | |
839 | stop -- for a process stopped but continuable. | |
840 | exit -- for a process that has exited. | |
841 | signal -- for a process that has got a fatal signal. | |
842 | open -- for a network stream connection that is open. | |
e690ca94 | 843 | listen -- for a network stream server that is listening. |
fdb82f93 | 844 | closed -- for a network stream connection that is closed. |
e4984112 KS |
845 | connect -- when waiting for a non-blocking connection to complete. |
846 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
847 | nil -- if arg is a process name and no such process exists. |
848 | PROCESS may be a process, a buffer, the name of a process, or | |
849 | nil, indicating the current buffer's process. */) | |
850 | (process) | |
4ee3e309 | 851 | register Lisp_Object process; |
d0d6b7c5 JB |
852 | { |
853 | register struct Lisp_Process *p; | |
854 | register Lisp_Object status; | |
343f4114 | 855 | |
4ee3e309 EN |
856 | if (STRINGP (process)) |
857 | process = Fget_process (process); | |
343f4114 | 858 | else |
4ee3e309 | 859 | process = get_process (process); |
343f4114 | 860 | |
4ee3e309 EN |
861 | if (NILP (process)) |
862 | return process; | |
343f4114 | 863 | |
4ee3e309 | 864 | p = XPROCESS (process); |
6bfd98e7 | 865 | if (p->raw_status_new) |
d0d6b7c5 JB |
866 | update_status (p); |
867 | status = p->status; | |
bcd69aea | 868 | if (CONSP (status)) |
70949dac | 869 | status = XCAR (status); |
e690ca94 | 870 | if (NETCONN1_P (p)) |
d0d6b7c5 | 871 | { |
e690ca94 | 872 | if (EQ (status, Qexit)) |
d0d6b7c5 | 873 | status = Qclosed; |
e690ca94 KS |
874 | else if (EQ (p->command, Qt)) |
875 | status = Qstop; | |
876 | else if (EQ (status, Qrun)) | |
877 | status = Qopen; | |
d0d6b7c5 JB |
878 | } |
879 | return status; | |
880 | } | |
881 | ||
882 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
883 | 1, 1, 0, | |
fdb82f93 PJ |
884 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
885 | If PROCESS has not yet exited or died, return 0. */) | |
886 | (process) | |
4ee3e309 | 887 | register Lisp_Object process; |
d0d6b7c5 | 888 | { |
b7826503 | 889 | CHECK_PROCESS (process); |
6bfd98e7 | 890 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 EN |
891 | update_status (XPROCESS (process)); |
892 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 893 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
894 | return make_number (0); |
895 | } | |
896 | ||
897 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 898 | doc: /* Return the process id of PROCESS. |
f3d9532b | 899 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 PJ |
900 | For a network connection, this value is nil. */) |
901 | (process) | |
4ee3e309 | 902 | register Lisp_Object process; |
d0d6b7c5 | 903 | { |
d30fe779 EZ |
904 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
905 | data type. */ | |
906 | EMACS_INT pid; | |
907 | ||
b7826503 | 908 | CHECK_PROCESS (process); |
d30fe779 EZ |
909 | pid = XPROCESS (process)->pid; |
910 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
911 | } |
912 | ||
913 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
914 | doc: /* Return the name of PROCESS, as a string. |
915 | This is the name of the program invoked in PROCESS, | |
916 | possibly modified to make it unique among process names. */) | |
917 | (process) | |
4ee3e309 | 918 | register Lisp_Object process; |
d0d6b7c5 | 919 | { |
b7826503 | 920 | CHECK_PROCESS (process); |
4ee3e309 | 921 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
922 | } |
923 | ||
924 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
925 | doc: /* Return the command that was executed to start PROCESS. |
926 | This is a list of strings, the first string being the program executed | |
927 | and the rest of the strings being the arguments given to it. | |
928 | For a non-child channel, this is nil. */) | |
929 | (process) | |
4ee3e309 | 930 | register Lisp_Object process; |
d0d6b7c5 | 931 | { |
b7826503 | 932 | CHECK_PROCESS (process); |
4ee3e309 | 933 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
934 | } |
935 | ||
3b9a3dfa | 936 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
937 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
938 | This is the terminal that the process itself reads and writes on, | |
939 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
940 | (process) | |
4ee3e309 | 941 | register Lisp_Object process; |
3b9a3dfa | 942 | { |
b7826503 | 943 | CHECK_PROCESS (process); |
4ee3e309 | 944 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
945 | } |
946 | ||
d0d6b7c5 | 947 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
948 | 2, 2, 0, |
949 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
950 | (process, buffer) | |
4ee3e309 | 951 | register Lisp_Object process, buffer; |
d0d6b7c5 | 952 | { |
e690ca94 KS |
953 | struct Lisp_Process *p; |
954 | ||
b7826503 | 955 | CHECK_PROCESS (process); |
d0d6b7c5 | 956 | if (!NILP (buffer)) |
b7826503 | 957 | CHECK_BUFFER (buffer); |
e690ca94 KS |
958 | p = XPROCESS (process); |
959 | p->buffer = buffer; | |
960 | if (NETCONN1_P (p)) | |
961 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); | |
03f04413 | 962 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
963 | return buffer; |
964 | } | |
965 | ||
966 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
967 | 1, 1, 0, |
968 | doc: /* Return the buffer PROCESS is associated with. | |
969 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
970 | (process) | |
4ee3e309 | 971 | register Lisp_Object process; |
d0d6b7c5 | 972 | { |
b7826503 | 973 | CHECK_PROCESS (process); |
4ee3e309 | 974 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
975 | } |
976 | ||
977 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
978 | 1, 1, 0, |
979 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
980 | (process) | |
4ee3e309 | 981 | register Lisp_Object process; |
d0d6b7c5 | 982 | { |
b7826503 | 983 | CHECK_PROCESS (process); |
4ee3e309 | 984 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
985 | } |
986 | ||
987 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
988 | 2, 2, 0, |
989 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 990 | A value of t means stop accepting output from the process. |
3452df9e KS |
991 | |
992 | When a process has a filter, its buffer is not used for output. | |
993 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 994 | passed to the filter. |
3452df9e | 995 | |
fdb82f93 | 996 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
997 | The string argument is normally a multibyte string, except: |
998 | - if the process' input coding system is no-conversion or raw-text, | |
999 | it is a unibyte string (the non-converted input), or else | |
1000 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
1001 | string (the result of converting the decoded input multibyte | |
1002 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 1003 | (process, filter) |
4ee3e309 | 1004 | register Lisp_Object process, filter; |
d0d6b7c5 | 1005 | { |
471f86b9 | 1006 | struct Lisp_Process *p; |
177c0ea7 | 1007 | |
b7826503 | 1008 | CHECK_PROCESS (process); |
471f86b9 GM |
1009 | p = XPROCESS (process); |
1010 | ||
1011 | /* Don't signal an error if the process' input file descriptor | |
1012 | is closed. This could make debugging Lisp more difficult, | |
1013 | for example when doing something like | |
1014 | ||
1015 | (setq process (start-process ...)) | |
1016 | (debug) | |
1017 | (set-process-filter process ...) */ | |
177c0ea7 | 1018 | |
60f0fb11 | 1019 | if (p->infd >= 0) |
a69281ff | 1020 | { |
e690ca94 | 1021 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 1022 | { |
60f0fb11 SM |
1023 | FD_CLR (p->infd, &input_wait_mask); |
1024 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1025 | } |
e690ca94 KS |
1026 | else if (EQ (p->filter, Qt) |
1027 | && !EQ (p->command, Qt)) /* Network process not stopped. */ | |
471f86b9 | 1028 | { |
60f0fb11 SM |
1029 | FD_SET (p->infd, &input_wait_mask); |
1030 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1031 | } |
a69281ff | 1032 | } |
177c0ea7 | 1033 | |
471f86b9 | 1034 | p->filter = filter; |
e690ca94 KS |
1035 | if (NETCONN1_P (p)) |
1036 | p->childp = Fplist_put (p->childp, QCfilter, filter); | |
03f04413 | 1037 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1038 | return filter; |
1039 | } | |
1040 | ||
1041 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1042 | 1, 1, 0, |
1043 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1044 | See `set-process-filter' for more info on filter functions. */) | |
1045 | (process) | |
4ee3e309 | 1046 | register Lisp_Object process; |
d0d6b7c5 | 1047 | { |
b7826503 | 1048 | CHECK_PROCESS (process); |
4ee3e309 | 1049 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1050 | } |
1051 | ||
1052 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1053 | 2, 2, 0, |
1054 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1055 | The sentinel is called as a function when the process changes state. | |
1056 | It gets two arguments: the process, and a string describing the change. */) | |
1057 | (process, sentinel) | |
4ee3e309 | 1058 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 1059 | { |
6b61353c KH |
1060 | struct Lisp_Process *p; |
1061 | ||
b7826503 | 1062 | CHECK_PROCESS (process); |
6b61353c KH |
1063 | p = XPROCESS (process); |
1064 | ||
1065 | p->sentinel = sentinel; | |
1066 | if (NETCONN1_P (p)) | |
1067 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); | |
d0d6b7c5 JB |
1068 | return sentinel; |
1069 | } | |
1070 | ||
1071 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1072 | 1, 1, 0, |
1073 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1074 | See `set-process-sentinel' for more info on sentinels. */) | |
1075 | (process) | |
4ee3e309 | 1076 | register Lisp_Object process; |
d0d6b7c5 | 1077 | { |
b7826503 | 1078 | CHECK_PROCESS (process); |
4ee3e309 | 1079 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1080 | } |
1081 | ||
396df322 | 1082 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1083 | Sset_process_window_size, 3, 3, 0, |
1084 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
1085 | (process, height, width) | |
4ee3e309 | 1086 | register Lisp_Object process, height, width; |
396df322 | 1087 | { |
b7826503 PJ |
1088 | CHECK_PROCESS (process); |
1089 | CHECK_NATNUM (height); | |
1090 | CHECK_NATNUM (width); | |
177c0ea7 | 1091 | |
60f0fb11 SM |
1092 | if (XPROCESS (process)->infd < 0 |
1093 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1094 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1095 | return Qnil; |
1096 | else | |
1097 | return Qt; | |
1098 | } | |
1099 | ||
52a1b894 | 1100 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1101 | Fset_process_inherit_coding_system_flag, |
1102 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1103 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1104 | If the second argument FLAG is non-nil, then the variable | |
1105 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1106 | will be bound to the value of the coding system used to decode | |
1107 | the process output. | |
1108 | ||
1109 | This is useful when the coding system specified for the process buffer | |
1110 | leaves either the character code conversion or the end-of-line conversion | |
1111 | unspecified, or if the coding system used to decode the process output | |
1112 | is more appropriate for saving the process buffer. | |
1113 | ||
1114 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1115 | starting the process is an alternative way of setting the inherit flag | |
1116 | for the process which will run. */) | |
1117 | (process, flag) | |
52a1b894 EZ |
1118 | register Lisp_Object process, flag; |
1119 | { | |
b7826503 | 1120 | CHECK_PROCESS (process); |
60f0fb11 | 1121 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1122 | return flag; |
1123 | } | |
1124 | ||
1125 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1126 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1127 | 1, 1, 0, | |
1128 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1129 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1130 | associated with PROCESS will inherit the coding system used to decode | |
1131 | the process output. */) | |
1132 | (process) | |
52a1b894 EZ |
1133 | register Lisp_Object process; |
1134 | { | |
b7826503 | 1135 | CHECK_PROCESS (process); |
60f0fb11 | 1136 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; |
52a1b894 EZ |
1137 | } |
1138 | ||
e690ca94 KS |
1139 | DEFUN ("set-process-query-on-exit-flag", |
1140 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1141 | 2, 2, 0, | |
1142 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1143 | If the second argument FLAG is non-nil, Emacs will query the user before |
e690ca94 KS |
1144 | exiting if PROCESS is running. */) |
1145 | (process, flag) | |
1146 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1147 | { |
b7826503 | 1148 | CHECK_PROCESS (process); |
60f0fb11 | 1149 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1150 | return flag; |
d0d6b7c5 | 1151 | } |
312c9964 | 1152 | |
e690ca94 KS |
1153 | DEFUN ("process-query-on-exit-flag", |
1154 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1155 | 1, 1, 0, |
f3d9532b | 1156 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
fdb82f93 | 1157 | (process) |
de282a05 RS |
1158 | register Lisp_Object process; |
1159 | { | |
b7826503 | 1160 | CHECK_PROCESS (process); |
60f0fb11 | 1161 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1162 | } |
1163 | ||
1164 | #ifdef DATAGRAM_SOCKETS | |
1165 | Lisp_Object Fprocess_datagram_address (); | |
1166 | #endif | |
1167 | ||
1168 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1169 | 1, 2, 0, | |
1170 | doc: /* Return the contact info of PROCESS; t for a real child. | |
1171 | For a net connection, the value depends on the optional KEY arg. | |
1172 | If KEY is nil, value is a cons cell of the form (HOST SERVICE), | |
1173 | if KEY is t, the complete contact information for the connection is | |
1174 | returned, else the specific value for the keyword KEY is returned. | |
1175 | See `make-network-process' for a list of keywords. */) | |
1176 | (process, key) | |
1177 | register Lisp_Object process, key; | |
1178 | { | |
1179 | Lisp_Object contact; | |
1180 | ||
1181 | CHECK_PROCESS (process); | |
1182 | contact = XPROCESS (process)->childp; | |
1183 | ||
1184 | #ifdef DATAGRAM_SOCKETS | |
1185 | if (DATAGRAM_CONN_P (process) | |
1186 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1187 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1188 | Fprocess_datagram_address (process)); |
1189 | #endif | |
1190 | ||
1191 | if (!NETCONN_P (process) || EQ (key, Qt)) | |
1192 | return contact; | |
1193 | if (NILP (key)) | |
1194 | return Fcons (Fplist_get (contact, QChost), | |
1195 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
1196 | return Fplist_get (contact, key); | |
de282a05 RS |
1197 | } |
1198 | ||
faa7db08 KS |
1199 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1200 | 1, 1, 0, | |
1201 | doc: /* Return the plist of PROCESS. */) | |
1202 | (process) | |
1203 | register Lisp_Object process; | |
365aee82 | 1204 | { |
ac4a7584 | 1205 | CHECK_PROCESS (process); |
faa7db08 | 1206 | return XPROCESS (process)->plist; |
ac4a7584 | 1207 | } |
365aee82 | 1208 | |
faa7db08 KS |
1209 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1210 | 2, 2, 0, | |
26a086c6 | 1211 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1212 | (process, plist) |
1213 | register Lisp_Object process, plist; | |
ac4a7584 | 1214 | { |
365aee82 | 1215 | CHECK_PROCESS (process); |
faa7db08 | 1216 | CHECK_LIST (plist); |
365aee82 | 1217 | |
faa7db08 | 1218 | XPROCESS (process)->plist = plist; |
26a086c6 | 1219 | return plist; |
365aee82 KS |
1220 | } |
1221 | ||
312c9964 RS |
1222 | #if 0 /* Turned off because we don't currently record this info |
1223 | in the process. Perhaps add it. */ | |
1224 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1225 | doc: /* Return the connection type of PROCESS. |
1226 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1227 | a socket connection. */) | |
1228 | (process) | |
312c9964 RS |
1229 | Lisp_Object process; |
1230 | { | |
1231 | return XPROCESS (process)->type; | |
1232 | } | |
1233 | #endif | |
991234f0 KS |
1234 | |
1235 | #ifdef HAVE_SOCKETS | |
1236 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1237 | 1, 2, 0, |
991234f0 | 1238 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1239 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1240 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1241 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1242 | number in the string, even when present in ADDRESS. |
1243 | Returns nil if format of ADDRESS is invalid. */) | |
0dccee41 KS |
1244 | (address, omit_port) |
1245 | Lisp_Object address, omit_port; | |
991234f0 | 1246 | { |
991234f0 KS |
1247 | if (NILP (address)) |
1248 | return Qnil; | |
1249 | ||
1250 | if (STRINGP (address)) /* AF_LOCAL */ | |
1251 | return address; | |
1252 | ||
e1652a86 | 1253 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1254 | { |
1255 | register struct Lisp_Vector *p = XVECTOR (address); | |
ded83665 | 1256 | Lisp_Object args[10]; |
0dccee41 | 1257 | int nargs, i; |
991234f0 | 1258 | |
e1652a86 | 1259 | if (p->size == 4 || (p->size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1260 | { |
1261 | args[0] = build_string ("%d.%d.%d.%d"); | |
1262 | nargs = 4; | |
1263 | } | |
1264 | else if (p->size == 5) | |
1265 | { | |
1266 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1267 | nargs = 5; | |
1268 | } | |
e1652a86 KS |
1269 | else if (p->size == 8 || (p->size == 9 && !NILP (omit_port))) |
1270 | { | |
1271 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1272 | nargs = 8; | |
1273 | } | |
1274 | else if (p->size == 9) | |
1275 | { | |
1276 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1277 | nargs = 9; | |
1278 | } | |
0dccee41 | 1279 | else |
991234f0 KS |
1280 | return Qnil; |
1281 | ||
0dccee41 | 1282 | for (i = 0; i < nargs; i++) |
cbf23adb JB |
1283 | { |
1284 | EMACS_INT element = XINT (p->contents[i]); | |
1285 | ||
1286 | if (element < 0 || element > 65535) | |
1287 | return Qnil; | |
1288 | ||
1289 | if (nargs <= 5 /* IPv4 */ | |
1290 | && i < 4 /* host, not port */ | |
1291 | && element > 255) | |
1292 | return Qnil; | |
1293 | ||
1294 | args[i+1] = p->contents[i]; | |
1295 | } | |
1296 | ||
0dccee41 | 1297 | return Fformat (nargs+1, args); |
991234f0 KS |
1298 | } |
1299 | ||
1300 | if (CONSP (address)) | |
1301 | { | |
1302 | Lisp_Object args[2]; | |
1303 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1304 | args[1] = Fcar (address); |
991234f0 | 1305 | return Fformat (2, args); |
991234f0 KS |
1306 | } |
1307 | ||
1308 | return Qnil; | |
1309 | } | |
1310 | #endif | |
d0d6b7c5 | 1311 | \f |
ff6daed3 | 1312 | static Lisp_Object |
e690ca94 KS |
1313 | list_processes_1 (query_only) |
1314 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1315 | { |
1316 | register Lisp_Object tail, tem; | |
1317 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1318 | register struct Lisp_Process *p; |
e690ca94 KS |
1319 | char tembuf[300]; |
1320 | int w_proc, w_buffer, w_tty; | |
1eed3bdc | 1321 | int exited = 0; |
e690ca94 KS |
1322 | Lisp_Object i_status, i_buffer, i_tty, i_command; |
1323 | ||
1324 | w_proc = 4; /* Proc */ | |
1325 | w_buffer = 6; /* Buffer */ | |
1326 | w_tty = 0; /* Omit if no ttys */ | |
1327 | ||
99784d63 | 1328 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
e690ca94 KS |
1329 | { |
1330 | int i; | |
1331 | ||
99784d63 | 1332 | proc = Fcdr (XCAR (tail)); |
e690ca94 KS |
1333 | p = XPROCESS (proc); |
1334 | if (NILP (p->childp)) | |
1335 | continue; | |
60f0fb11 | 1336 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 KS |
1337 | continue; |
1338 | if (STRINGP (p->name) | |
d5db4077 | 1339 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1340 | w_proc = i; |
1341 | if (!NILP (p->buffer)) | |
1342 | { | |
e69c4cae SM |
1343 | if (NILP (XBUFFER (p->buffer)->name)) |
1344 | { | |
1345 | if (w_buffer < 8) | |
1346 | w_buffer = 8; /* (Killed) */ | |
1347 | } | |
d5db4077 | 1348 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1349 | w_buffer = i; |
1350 | } | |
1351 | if (STRINGP (p->tty_name) | |
d5db4077 | 1352 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1353 | w_tty = i; |
1354 | } | |
1355 | ||
1356 | XSETFASTINT (i_status, w_proc + 1); | |
1357 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1358 | if (w_tty) | |
1359 | { | |
1360 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
d3c0009d AS |
1361 | XSETFASTINT (i_command, XFASTINT (i_tty) + w_tty + 1); |
1362 | } | |
1363 | else | |
1364 | { | |
e690ca94 KS |
1365 | i_tty = Qnil; |
1366 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1367 | } | |
d0d6b7c5 | 1368 | |
22719df2 | 1369 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1370 | |
1371 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1372 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1373 | |
1374 | current_buffer->truncate_lines = Qt; | |
1375 | ||
e690ca94 KS |
1376 | write_string ("Proc", -1); |
1377 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1378 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1379 | if (!NILP (i_tty)) | |
1380 | { | |
1381 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1382 | } | |
1383 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1384 | write_string ("\n", -1); | |
1385 | ||
1386 | write_string ("----", -1); | |
1387 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1388 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1389 | if (!NILP (i_tty)) | |
1390 | { | |
1391 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1392 | } | |
1393 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1394 | write_string ("\n", -1); | |
d0d6b7c5 | 1395 | |
99784d63 | 1396 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 JB |
1397 | { |
1398 | Lisp_Object symbol; | |
1399 | ||
99784d63 | 1400 | proc = Fcdr (XCAR (tail)); |
d0d6b7c5 JB |
1401 | p = XPROCESS (proc); |
1402 | if (NILP (p->childp)) | |
1403 | continue; | |
60f0fb11 | 1404 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 | 1405 | continue; |
d0d6b7c5 JB |
1406 | |
1407 | Finsert (1, &p->name); | |
e690ca94 | 1408 | Findent_to (i_status, minspace); |
d0d6b7c5 | 1409 | |
6bfd98e7 | 1410 | if (p->raw_status_new) |
d0d6b7c5 JB |
1411 | update_status (p); |
1412 | symbol = p->status; | |
bcd69aea | 1413 | if (CONSP (p->status)) |
70949dac | 1414 | symbol = XCAR (p->status); |
d0d6b7c5 | 1415 | |
d0d6b7c5 JB |
1416 | if (EQ (symbol, Qsignal)) |
1417 | { | |
1418 | Lisp_Object tem; | |
1419 | tem = Fcar (Fcdr (p->status)); | |
1420 | #ifdef VMS | |
1421 | if (XINT (tem) < NSIG) | |
b0310da4 | 1422 | write_string (sys_errlist [XINT (tem)], -1); |
d0d6b7c5 JB |
1423 | else |
1424 | #endif | |
1425 | Fprinc (symbol, Qnil); | |
1426 | } | |
e690ca94 | 1427 | else if (NETCONN1_P (p)) |
d0d6b7c5 | 1428 | { |
e690ca94 | 1429 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1430 | write_string ("closed", -1); |
e690ca94 KS |
1431 | else if (EQ (p->command, Qt)) |
1432 | write_string ("stopped", -1); | |
1433 | else if (EQ (symbol, Qrun)) | |
1434 | write_string ("open", -1); | |
d0d6b7c5 JB |
1435 | else |
1436 | Fprinc (symbol, Qnil); | |
1437 | } | |
1438 | else | |
1439 | Fprinc (symbol, Qnil); | |
1440 | ||
1441 | if (EQ (symbol, Qexit)) | |
1442 | { | |
1443 | Lisp_Object tem; | |
1444 | tem = Fcar (Fcdr (p->status)); | |
1445 | if (XFASTINT (tem)) | |
1446 | { | |
3162bafa | 1447 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1448 | write_string (tembuf, -1); |
1449 | } | |
1450 | } | |
1451 | ||
1eed3bdc KS |
1452 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) || EQ (symbol, Qclosed)) |
1453 | exited++; | |
d0d6b7c5 | 1454 | |
e690ca94 | 1455 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1456 | if (NILP (p->buffer)) |
1457 | insert_string ("(none)"); | |
1458 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1459 | insert_string ("(Killed)"); | |
1460 | else | |
1461 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1462 | ||
e690ca94 KS |
1463 | if (!NILP (i_tty)) |
1464 | { | |
1465 | Findent_to (i_tty, minspace); | |
1466 | if (STRINGP (p->tty_name)) | |
1467 | Finsert (1, &p->tty_name); | |
1468 | } | |
a9fde32e | 1469 | |
e690ca94 | 1470 | Findent_to (i_command, minspace); |
a9fde32e | 1471 | |
e690ca94 KS |
1472 | if (EQ (p->status, Qlisten)) |
1473 | { | |
1474 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1475 | if (INTEGERP (port)) | |
1476 | port = Fnumber_to_string (port); | |
991234f0 | 1477 | if (NILP (port)) |
0dccee41 | 1478 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1479 | sprintf (tembuf, "(network %s server on %s)\n", |
60f0fb11 | 1480 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1481 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1482 | insert_string (tembuf); |
1483 | } | |
1484 | else if (NETCONN1_P (p)) | |
d0d6b7c5 | 1485 | { |
e690ca94 KS |
1486 | /* For a local socket, there is no host name, |
1487 | so display service instead. */ | |
1488 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1489 | if (!STRINGP (host)) | |
1490 | { | |
1491 | host = Fplist_get (p->childp, QCservice); | |
1492 | if (INTEGERP (host)) | |
1493 | host = Fnumber_to_string (host); | |
1494 | } | |
991234f0 | 1495 | if (NILP (host)) |
0dccee41 | 1496 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1497 | sprintf (tembuf, "(network %s connection to %s)\n", |
60f0fb11 | 1498 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1499 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 JB |
1500 | insert_string (tembuf); |
1501 | } | |
177c0ea7 | 1502 | else |
d0d6b7c5 JB |
1503 | { |
1504 | tem = p->command; | |
1505 | while (1) | |
1506 | { | |
1507 | tem1 = Fcar (tem); | |
1508 | Finsert (1, &tem1); | |
1509 | tem = Fcdr (tem); | |
1510 | if (NILP (tem)) | |
1511 | break; | |
1512 | insert_string (" "); | |
1513 | } | |
1514 | insert_string ("\n"); | |
1515 | } | |
1516 | } | |
1eed3bdc KS |
1517 | if (exited) |
1518 | status_notify (NULL); | |
d0d6b7c5 JB |
1519 | return Qnil; |
1520 | } | |
1521 | ||
e690ca94 | 1522 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1523 | doc: /* Display a list of all processes. |
e690ca94 KS |
1524 | If optional argument QUERY-ONLY is non-nil, only processes with |
1525 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1526 | Any process listed as exited or signaled is actually eliminated |
1527 | after the listing is made. */) | |
e690ca94 KS |
1528 | (query_only) |
1529 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1530 | { |
1531 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1532 | list_processes_1, query_only); |
d0d6b7c5 JB |
1533 | return Qnil; |
1534 | } | |
1535 | ||
1536 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1537 | doc: /* Return a list of all processes. */) |
1538 | () | |
d0d6b7c5 JB |
1539 | { |
1540 | return Fmapcar (Qcdr, Vprocess_alist); | |
1541 | } | |
1542 | \f | |
b0310da4 JB |
1543 | /* Starting asynchronous inferior processes. */ |
1544 | ||
1545 | static Lisp_Object start_process_unwind (); | |
1546 | ||
d0d6b7c5 | 1547 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1548 | doc: /* Start a program in a subprocess. Return the process object for it. |
1549 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1550 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1551 | |
1552 | Process output (both standard output and standard error streams) goes | |
1553 | at end of BUFFER, unless you specify an output stream or filter | |
1554 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1555 | this process is not associated with any buffer. |
1556 | ||
553acde5 | 1557 | PROGRAM is the program file name. It is searched for in PATH. |
3ecdf100 | 1558 | Remaining arguments are strings to give program as arguments. |
320aebc9 | 1559 | |
4b6c5eee EZ |
1560 | If you want to separate standard output from standard error, invoke |
1561 | the command through a shell and redirect one of them using the shell | |
1562 | syntax. | |
320aebc9 | 1563 | |
3ecdf100 | 1564 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1565 | (nargs, args) |
d0d6b7c5 JB |
1566 | int nargs; |
1567 | register Lisp_Object *args; | |
1568 | { | |
1e30af70 | 1569 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 JB |
1570 | #ifdef VMS |
1571 | register unsigned char *new_argv; | |
1572 | int len; | |
1573 | #else | |
1574 | register unsigned char **new_argv; | |
1575 | #endif | |
1576 | register int i; | |
aed13378 | 1577 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1578 | |
1579 | buffer = args[1]; | |
1580 | if (!NILP (buffer)) | |
1581 | buffer = Fget_buffer_create (buffer); | |
1582 | ||
1e30af70 JB |
1583 | /* Make sure that the child will be able to chdir to the current |
1584 | buffer's current directory, or its unhandled equivalent. We | |
1585 | can't just have the child check for an error when it does the | |
1586 | chdir, since it's in a vfork. | |
1587 | ||
1588 | We have to GCPRO around this because Fexpand_file_name and | |
1589 | Funhandled_file_name_directory might call a file name handling | |
1590 | function. The argument list is protected by the caller, so all | |
1591 | we really have to worry about is buffer. */ | |
1592 | { | |
1593 | struct gcpro gcpro1, gcpro2; | |
1594 | ||
1595 | current_dir = current_buffer->directory; | |
1596 | ||
1597 | GCPRO2 (buffer, current_dir); | |
1598 | ||
ca319910 SM |
1599 | current_dir = Funhandled_file_name_directory (current_dir); |
1600 | if (NILP (current_dir)) | |
1601 | /* If the file name handler says that current_dir is unreachable, use | |
1602 | a sensible default. */ | |
1603 | current_dir = build_string ("~/"); | |
1604 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1605 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1606 | report_file_error ("Setting current directory", | |
1607 | Fcons (current_buffer->directory, Qnil)); | |
1608 | ||
1609 | UNGCPRO; | |
1610 | } | |
1611 | ||
d0d6b7c5 | 1612 | name = args[0]; |
b7826503 | 1613 | CHECK_STRING (name); |
d0d6b7c5 JB |
1614 | |
1615 | program = args[2]; | |
1616 | ||
b7826503 | 1617 | CHECK_STRING (program); |
d0d6b7c5 | 1618 | |
d0d6b7c5 | 1619 | proc = make_process (name); |
b0310da4 JB |
1620 | /* If an error occurs and we can't start the process, we want to |
1621 | remove it from the process list. This means that each error | |
1622 | check in create_process doesn't need to call remove_process | |
1623 | itself; it's all taken care of here. */ | |
1624 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1625 | |
1626 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1627 | XPROCESS (proc)->plist = Qnil; |
d0d6b7c5 JB |
1628 | XPROCESS (proc)->buffer = buffer; |
1629 | XPROCESS (proc)->sentinel = Qnil; | |
1630 | XPROCESS (proc)->filter = Qnil; | |
03f04413 | 1631 | XPROCESS (proc)->filter_multibyte |
60f0fb11 | 1632 | = !NILP (buffer_defaults.enable_multibyte_characters); |
d0d6b7c5 JB |
1633 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); |
1634 | ||
6b61353c | 1635 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1636 | XPROCESS (proc)->adaptive_read_buffering |
1637 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1638 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1639 | #endif |
1640 | ||
7af71e17 | 1641 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1642 | if (BUFFERP (buffer)) |
d8a2934e RS |
1643 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1644 | BUF_ZV (XBUFFER (buffer)), | |
1645 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1646 | |
67918941 | 1647 | { |
d5d4ae71 KH |
1648 | /* Decide coding systems for communicating with the process. Here |
1649 | we don't setup the structure coding_system nor pay attention to | |
1650 | unibyte mode. They are done in create_process. */ | |
1651 | ||
67918941 RS |
1652 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1653 | Lisp_Object coding_systems = Qt; | |
1654 | Lisp_Object val, *args2; | |
a4a37e65 | 1655 | struct gcpro gcpro1, gcpro2; |
67918941 | 1656 | |
d5d4ae71 KH |
1657 | val = Vcoding_system_for_read; |
1658 | if (NILP (val)) | |
67918941 RS |
1659 | { |
1660 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1661 | args2[0] = Qstart_process; | |
1662 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1663 | GCPRO2 (proc, current_dir); |
67918941 RS |
1664 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1665 | UNGCPRO; | |
1666 | if (CONSP (coding_systems)) | |
70949dac | 1667 | val = XCAR (coding_systems); |
67918941 | 1668 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1669 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1670 | } |
1671 | XPROCESS (proc)->decode_coding_system = val; | |
1672 | ||
d5d4ae71 KH |
1673 | val = Vcoding_system_for_write; |
1674 | if (NILP (val)) | |
67918941 RS |
1675 | { |
1676 | if (EQ (coding_systems, Qt)) | |
1677 | { | |
1678 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1679 | args2[0] = Qstart_process; | |
1680 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1681 | GCPRO2 (proc, current_dir); |
67918941 RS |
1682 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1683 | UNGCPRO; | |
1684 | } | |
1685 | if (CONSP (coding_systems)) | |
70949dac | 1686 | val = XCDR (coding_systems); |
67918941 | 1687 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1688 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1689 | } |
1690 | XPROCESS (proc)->encode_coding_system = val; | |
1691 | } | |
0fa1789e | 1692 | |
a4a37e65 KH |
1693 | #ifdef VMS |
1694 | /* Make a one member argv with all args concatenated | |
1695 | together separated by a blank. */ | |
d5db4077 | 1696 | len = SBYTES (program) + 2; |
a4a37e65 KH |
1697 | for (i = 3; i < nargs; i++) |
1698 | { | |
1699 | tem = args[i]; | |
b7826503 | 1700 | CHECK_STRING (tem); |
d5db4077 | 1701 | len += SBYTES (tem) + 1; /* count the blank */ |
a4a37e65 KH |
1702 | } |
1703 | new_argv = (unsigned char *) alloca (len); | |
d5db4077 | 1704 | strcpy (new_argv, SDATA (program)); |
a4a37e65 KH |
1705 | for (i = 3; i < nargs; i++) |
1706 | { | |
1707 | tem = args[i]; | |
b7826503 | 1708 | CHECK_STRING (tem); |
a4a37e65 | 1709 | strcat (new_argv, " "); |
d5db4077 | 1710 | strcat (new_argv, SDATA (tem)); |
a4a37e65 KH |
1711 | } |
1712 | /* Need to add code here to check for program existence on VMS */ | |
177c0ea7 | 1713 | |
a4a37e65 KH |
1714 | #else /* not VMS */ |
1715 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1716 | ||
ed30cf85 RS |
1717 | /* If program file name is not absolute, search our path for it. |
1718 | Put the name we will really use in TEM. */ | |
d5db4077 KR |
1719 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) |
1720 | && !(SCHARS (program) > 1 | |
1721 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
a4a37e65 KH |
1722 | { |
1723 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1724 | ||
1725 | tem = Qnil; | |
1726 | GCPRO4 (name, program, buffer, current_dir); | |
cc4db0c7 | 1727 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); |
a4a37e65 KH |
1728 | UNGCPRO; |
1729 | if (NILP (tem)) | |
1730 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1731 | tem = Fexpand_file_name (tem, Qnil); | |
a4a37e65 KH |
1732 | } |
1733 | else | |
1734 | { | |
1735 | if (!NILP (Ffile_directory_p (program))) | |
1736 | error ("Specified program for new process is a directory"); | |
ed30cf85 | 1737 | tem = program; |
a4a37e65 KH |
1738 | } |
1739 | ||
ed30cf85 RS |
1740 | /* If program file name starts with /: for quoting a magic name, |
1741 | discard that. */ | |
1742 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1743 | && SREF (tem, 1) == ':') | |
1744 | tem = Fsubstring (tem, make_number (2), Qnil); | |
1745 | ||
1746 | /* Encode the file name and put it in NEW_ARGV. | |
1747 | That's where the child will use it to execute the program. */ | |
1748 | tem = ENCODE_FILE (tem); | |
1749 | new_argv[0] = SDATA (tem); | |
1750 | ||
a4a37e65 KH |
1751 | /* Here we encode arguments by the coding system used for sending |
1752 | data to the process. We don't support using different coding | |
1753 | systems for encoding arguments and for encoding data sent to the | |
1754 | process. */ | |
1755 | ||
1756 | for (i = 3; i < nargs; i++) | |
1757 | { | |
1758 | tem = args[i]; | |
b7826503 | 1759 | CHECK_STRING (tem); |
a4a37e65 KH |
1760 | if (STRING_MULTIBYTE (tem)) |
1761 | tem = (code_convert_string_norecord | |
1762 | (tem, XPROCESS (proc)->encode_coding_system, 1)); | |
d5db4077 | 1763 | new_argv[i - 2] = SDATA (tem); |
a4a37e65 KH |
1764 | } |
1765 | new_argv[i - 2] = 0; | |
1766 | #endif /* not VMS */ | |
1767 | ||
0fa1789e | 1768 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
60f0fb11 | 1769 | XPROCESS (proc)->decoding_carryover = 0; |
0fa1789e KH |
1770 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); |
1771 | ||
52a1b894 | 1772 | XPROCESS (proc)->inherit_coding_system_flag |
e6fca843 | 1773 | = !(NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 1774 | |
6b53bb85 | 1775 | create_process (proc, (char **) new_argv, current_dir); |
d0d6b7c5 | 1776 | |
b0310da4 | 1777 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1778 | } |
1779 | ||
b0310da4 | 1780 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1781 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1782 | an error and the process wasn't started successfully, so we should |
1783 | remove it from the process list. */ | |
1784 | static Lisp_Object | |
1785 | start_process_unwind (proc) | |
1786 | Lisp_Object proc; | |
1787 | { | |
bcd69aea | 1788 | if (!PROCESSP (proc)) |
b0310da4 JB |
1789 | abort (); |
1790 | ||
1791 | /* Was PROC started successfully? */ | |
6bfd98e7 | 1792 | if (XPROCESS (proc)->pid <= 0) |
b0310da4 JB |
1793 | remove_process (proc); |
1794 | ||
1795 | return Qnil; | |
1796 | } | |
1797 | ||
ff6daed3 | 1798 | static void |
30904ab7 GM |
1799 | create_process_1 (timer) |
1800 | struct atimer *timer; | |
d0d6b7c5 | 1801 | { |
30904ab7 | 1802 | /* Nothing to do. */ |
d0d6b7c5 JB |
1803 | } |
1804 | ||
30904ab7 | 1805 | |
d0d6b7c5 JB |
1806 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1807 | #ifdef USG | |
1808 | #ifdef SIGCHLD | |
1809 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1810 | ||
1811 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1812 | int sigchld_deferred; | |
1813 | ||
1814 | SIGTYPE | |
1815 | create_process_sigchld () | |
1816 | { | |
1817 | signal (SIGCHLD, create_process_sigchld); | |
1818 | ||
1819 | sigchld_deferred = 1; | |
1820 | } | |
1821 | #endif | |
1822 | #endif | |
1823 | #endif | |
1824 | ||
1825 | #ifndef VMS /* VMS version of this function is in vmsproc.c. */ | |
6b53bb85 | 1826 | void |
1e30af70 | 1827 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1828 | Lisp_Object process; |
1829 | char **new_argv; | |
1e30af70 | 1830 | Lisp_Object current_dir; |
d0d6b7c5 | 1831 | { |
29ed4d51 CY |
1832 | int inchannel, outchannel; |
1833 | pid_t pid; | |
d0d6b7c5 | 1834 | int sv[2]; |
0dc70c33 KH |
1835 | #ifdef POSIX_SIGNALS |
1836 | sigset_t procmask; | |
1837 | sigset_t blocked; | |
1838 | struct sigaction sigint_action; | |
1839 | struct sigaction sigquit_action; | |
1840 | #ifdef AIX | |
1841 | struct sigaction sighup_action; | |
1842 | #endif | |
1843 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1844 | #if 0 |
d0d6b7c5 JB |
1845 | #ifdef SIGCHLD |
1846 | SIGTYPE (*sigchld)(); | |
1847 | #endif | |
41d03b9a | 1848 | #endif /* 0 */ |
0dc70c33 | 1849 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1850 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1851 | volatile int forkin, forkout; | |
1852 | volatile int pty_flag = 0; | |
3ec68006 | 1853 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1854 | extern char **environ; |
3ec68006 | 1855 | #endif |
d0d6b7c5 | 1856 | |
d0d6b7c5 JB |
1857 | inchannel = outchannel = -1; |
1858 | ||
1859 | #ifdef HAVE_PTYS | |
fe45da4e | 1860 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1861 | outchannel = inchannel = allocate_pty (); |
1862 | ||
d0d6b7c5 JB |
1863 | if (inchannel >= 0) |
1864 | { | |
2af70a0c RS |
1865 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1866 | /* On most USG systems it does not work to open the pty's tty here, | |
1867 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1868 | #ifdef O_NOCTTY |
1869 | /* Don't let this terminal become our controlling terminal | |
1870 | (in case we don't have one). */ | |
68c45bf0 | 1871 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1872 | #else |
68c45bf0 | 1873 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1874 | #endif |
1875 | if (forkin < 0) | |
1876 | report_file_error ("Opening pty", Qnil); | |
e39a993c | 1877 | #if defined (DONT_REOPEN_PTY) |
21375f1e YM |
1878 | /* In the case that vfork is defined as fork, the parent process |
1879 | (Emacs) may send some data before the child process completes | |
1880 | tty options setup. So we setup tty before forking. */ | |
1881 | child_setup_tty (forkout); | |
e39a993c | 1882 | #endif /* DONT_REOPEN_PTY */ |
d0d6b7c5 JB |
1883 | #else |
1884 | forkin = forkout = -1; | |
2af70a0c | 1885 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1886 | pty_flag = 1; |
1887 | } | |
1888 | else | |
1889 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1890 | { |
fc14013c KH |
1891 | int tem; |
1892 | tem = pipe (sv); | |
1893 | if (tem < 0) | |
1894 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1895 | inchannel = sv[0]; |
1896 | forkout = sv[1]; | |
fc14013c KH |
1897 | tem = pipe (sv); |
1898 | if (tem < 0) | |
1899 | { | |
68c45bf0 PE |
1900 | emacs_close (inchannel); |
1901 | emacs_close (forkout); | |
fc14013c KH |
1902 | report_file_error ("Creating pipe", Qnil); |
1903 | } | |
d0d6b7c5 JB |
1904 | outchannel = sv[1]; |
1905 | forkin = sv[0]; | |
1906 | } | |
d0d6b7c5 JB |
1907 | |
1908 | #if 0 | |
1909 | /* Replaced by close_process_descs */ | |
1910 | set_exclusive_use (inchannel); | |
1911 | set_exclusive_use (outchannel); | |
1912 | #endif | |
1913 | ||
d0d6b7c5 JB |
1914 | #ifdef O_NONBLOCK |
1915 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1916 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1917 | #else |
1918 | #ifdef O_NDELAY | |
1919 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1920 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1921 | #endif |
1922 | #endif | |
1923 | ||
1924 | /* Record this as an active process, with its channels. | |
1925 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1926 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1927 | XPROCESS (process)->infd = inchannel; |
1928 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1929 | |
1930 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1931 | It was only used for getting the foreground tty process, so now | |
1932 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1933 | more portable (see USG_SUBTTY_WORKS above). */ | |
1934 | ||
60f0fb11 | 1935 | XPROCESS (process)->pty_flag = pty_flag; |
d0d6b7c5 | 1936 | XPROCESS (process)->status = Qrun; |
03f04413 | 1937 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1938 | |
1939 | /* Delay interrupts until we have a chance to store | |
1940 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1941 | #ifdef POSIX_SIGNALS |
1942 | sigemptyset (&blocked); | |
1943 | #ifdef SIGCHLD | |
1944 | sigaddset (&blocked, SIGCHLD); | |
1945 | #endif | |
351e611f | 1946 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1947 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1948 | this sets the parent's signal handlers as well as the child's. | |
1949 | So delay all interrupts whose handlers the child might munge, | |
1950 | and record the current handlers so they can be restored later. */ | |
1951 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1952 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1953 | #ifdef AIX | |
1954 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1955 | #endif | |
351e611f | 1956 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
1957 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
1958 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
1959 | #ifdef SIGCHLD |
1960 | #ifdef BSD4_1 | |
1961 | sighold (SIGCHLD); | |
1962 | #else /* not BSD4_1 */ | |
e39a993c | 1963 | #if defined (BSD_SYSTEM) || defined (HPUX) |
d0d6b7c5 JB |
1964 | sigsetmask (sigmask (SIGCHLD)); |
1965 | #else /* ordinary USG */ | |
1966 | #if 0 | |
1967 | sigchld_deferred = 0; | |
1968 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
1969 | #endif | |
1970 | #endif /* ordinary USG */ | |
1971 | #endif /* not BSD4_1 */ | |
1972 | #endif /* SIGCHLD */ | |
0dc70c33 | 1973 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 1974 | |
3081bf8d | 1975 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1976 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1977 | if (inchannel > max_process_desc) |
1978 | max_process_desc = inchannel; | |
1979 | ||
d0d6b7c5 JB |
1980 | /* Until we store the proper pid, enable sigchld_handler |
1981 | to recognize an unknown pid as standing for this process. | |
1982 | It is very important not to let this `marker' value stay | |
1983 | in the table after this function has returned; if it does | |
1984 | it might cause call-process to hang and subsequent asynchronous | |
1985 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1986 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1987 | |
ececcbec | 1988 | BLOCK_INPUT; |
177c0ea7 | 1989 | |
d0d6b7c5 JB |
1990 | { |
1991 | /* child_setup must clobber environ on systems with true vfork. | |
1992 | Protect it from permanent change. */ | |
1993 | char **save_environ = environ; | |
1994 | ||
14dc6093 | 1995 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1996 | |
e98d950b | 1997 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1998 | pid = vfork (); |
1999 | if (pid == 0) | |
e98d950b | 2000 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2001 | { |
2002 | int xforkin = forkin; | |
2003 | int xforkout = forkout; | |
2004 | ||
2005 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
2006 | but fails to handle all the cases. */ | |
2007 | /* Make sure SIGCHLD is not blocked in the child. */ | |
2008 | sigsetmask (SIGEMPTYMASK); | |
2009 | #endif | |
2010 | ||
2011 | /* Make the pty be the controlling terminal of the process. */ | |
2012 | #ifdef HAVE_PTYS | |
2013 | /* First, disconnect its current controlling terminal. */ | |
2014 | #ifdef HAVE_SETSID | |
7ce48618 RS |
2015 | /* We tried doing setsid only if pty_flag, but it caused |
2016 | process_set_signal to fail on SGI when using a pipe. */ | |
2017 | setsid (); | |
ce4c9c90 | 2018 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 2019 | if (pty_flag) |
39e9ebcd | 2020 | { |
39e9ebcd RS |
2021 | #ifdef TIOCSCTTY |
2022 | /* We ignore the return value | |
2023 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
2024 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 2025 | #endif |
39e9ebcd | 2026 | } |
d0d6b7c5 | 2027 | #else /* not HAVE_SETSID */ |
c14e53a4 | 2028 | #ifdef USG |
000ab717 | 2029 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
2030 | afterwards. Otherwise, we lose our controlling tty which |
2031 | is set when we open the pty. */ | |
2032 | setpgrp (); | |
2033 | #endif /* USG */ | |
2034 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
2035 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
2036 | if (pty_flag && xforkin >= 0) | |
2037 | { | |
2038 | struct termios t; | |
2039 | tcgetattr (xforkin, &t); | |
2040 | t.c_lflag = LDISC1; | |
2041 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 2042 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
2043 | } |
2044 | #else | |
aafadd9f | 2045 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 2046 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
2047 | { |
2048 | /* Use new line discipline. */ | |
2049 | int ldisc = NTTYDISC; | |
4458f555 | 2050 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 2051 | } |
000ab717 | 2052 | #endif |
9bcf8ec6 | 2053 | #endif |
177c0ea7 | 2054 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
2055 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
2056 | can do TIOCSPGRP only to the process's controlling tty. */ | |
2057 | if (pty_flag) | |
2058 | { | |
177c0ea7 | 2059 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 2060 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 2061 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 2062 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 2063 | emacs_close (j); |
5a570e37 | 2064 | #ifndef USG |
d0d6b7c5 JB |
2065 | /* In order to get a controlling terminal on some versions |
2066 | of BSD, it is necessary to put the process in pgrp 0 | |
2067 | before it opens the terminal. */ | |
99c1aeca | 2068 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
2069 | setpgid (0, 0); |
2070 | #else | |
d0d6b7c5 | 2071 | setpgrp (0, 0); |
3ea1d291 | 2072 | #endif |
d0d6b7c5 JB |
2073 | #endif |
2074 | } | |
2075 | #endif /* TIOCNOTTY */ | |
2076 | ||
e39a993c | 2077 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 2078 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
2079 | conditional on TIOCSPGRP, |
2080 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
2081 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
2082 | that system does seem to need this code, even though | |
2083 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
2084 | /* Now close the pty (if we had it open) and reopen it. |
2085 | This makes the pty the controlling terminal of the subprocess. */ | |
2086 | if (pty_flag) | |
2087 | { | |
99e3d726 RS |
2088 | #ifdef SET_CHILD_PTY_PGRP |
2089 | int pgrp = getpid (); | |
2090 | #endif | |
2091 | ||
68c45bf0 PE |
2092 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2093 | would work? */ | |
d0d6b7c5 | 2094 | if (xforkin >= 0) |
68c45bf0 PE |
2095 | emacs_close (xforkin); |
2096 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2097 | |
4aa54ba8 RS |
2098 | if (xforkin < 0) |
2099 | { | |
68c45bf0 PE |
2100 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2101 | emacs_write (1, pty_name, strlen (pty_name)); | |
2102 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2103 | _exit (1); |
2104 | } | |
2105 | ||
99e3d726 RS |
2106 | #ifdef SET_CHILD_PTY_PGRP |
2107 | ioctl (xforkin, TIOCSPGRP, &pgrp); | |
2108 | ioctl (xforkout, TIOCSPGRP, &pgrp); | |
2109 | #endif | |
d0d6b7c5 | 2110 | } |
e39a993c | 2111 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 2112 | |
d0d6b7c5 | 2113 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2114 | if (pty_flag) |
2115 | { | |
2116 | SETUP_SLAVE_PTY; | |
2117 | } | |
d0d6b7c5 JB |
2118 | #endif /* SETUP_SLAVE_PTY */ |
2119 | #ifdef AIX | |
2120 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2121 | Now reenable it in the child, so it will die when we want it to. */ | |
2122 | if (pty_flag) | |
2123 | signal (SIGHUP, SIG_DFL); | |
2124 | #endif | |
2125 | #endif /* HAVE_PTYS */ | |
2126 | ||
0dc70c33 KH |
2127 | signal (SIGINT, SIG_DFL); |
2128 | signal (SIGQUIT, SIG_DFL); | |
2129 | ||
2130 | /* Stop blocking signals in the child. */ | |
2131 | #ifdef POSIX_SIGNALS | |
2132 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2133 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2134 | #ifdef SIGCHLD |
2135 | #ifdef BSD4_1 | |
2136 | sigrelse (SIGCHLD); | |
2137 | #else /* not BSD4_1 */ | |
e39a993c | 2138 | #if defined (BSD_SYSTEM) || defined (HPUX) |
d0d6b7c5 JB |
2139 | sigsetmask (SIGEMPTYMASK); |
2140 | #else /* ordinary USG */ | |
63528b78 | 2141 | #if 0 |
d0d6b7c5 | 2142 | signal (SIGCHLD, sigchld); |
63528b78 | 2143 | #endif |
d0d6b7c5 JB |
2144 | #endif /* ordinary USG */ |
2145 | #endif /* not BSD4_1 */ | |
2146 | #endif /* SIGCHLD */ | |
0dc70c33 | 2147 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2148 | |
e39a993c | 2149 | #if !defined (DONT_REOPEN_PTY) |
ab01d0a8 RS |
2150 | if (pty_flag) |
2151 | child_setup_tty (xforkout); | |
e39a993c | 2152 | #endif /* not DONT_REOPEN_PTY */ |
e98d950b RS |
2153 | #ifdef WINDOWSNT |
2154 | pid = child_setup (xforkin, xforkout, xforkout, | |
2155 | new_argv, 1, current_dir); | |
177c0ea7 | 2156 | #else /* not WINDOWSNT */ |
d0d6b7c5 | 2157 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2158 | new_argv, 1, current_dir); |
e98d950b | 2159 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2160 | } |
2161 | environ = save_environ; | |
2162 | } | |
2163 | ||
ececcbec RS |
2164 | UNBLOCK_INPUT; |
2165 | ||
4a127b3b | 2166 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2167 | if (pid < 0) |
6311cf58 RS |
2168 | { |
2169 | if (forkin >= 0) | |
68c45bf0 | 2170 | emacs_close (forkin); |
6311cf58 | 2171 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2172 | emacs_close (forkout); |
6311cf58 | 2173 | } |
4a127b3b KH |
2174 | else |
2175 | { | |
2176 | /* vfork succeeded. */ | |
6bfd98e7 | 2177 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 2178 | |
e98d950b | 2179 | #ifdef WINDOWSNT |
4a127b3b | 2180 | register_child (pid, inchannel); |
e98d950b RS |
2181 | #endif /* WINDOWSNT */ |
2182 | ||
4a127b3b KH |
2183 | /* If the subfork execv fails, and it exits, |
2184 | this close hangs. I don't know why. | |
2185 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2186 | { |
2187 | struct atimer *timer; | |
2188 | EMACS_TIME offset; | |
177c0ea7 | 2189 | |
30904ab7 GM |
2190 | stop_polling (); |
2191 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2192 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2193 | |
30904ab7 GM |
2194 | if (forkin >= 0) |
2195 | emacs_close (forkin); | |
2196 | ||
2197 | cancel_atimer (timer); | |
2198 | start_polling (); | |
2199 | } | |
177c0ea7 | 2200 | |
4a127b3b | 2201 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2202 | emacs_close (forkout); |
d0d6b7c5 | 2203 | |
875e6b94 | 2204 | #ifdef HAVE_PTYS |
4a127b3b KH |
2205 | if (pty_flag) |
2206 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2207 | else | |
875e6b94 | 2208 | #endif |
4a127b3b KH |
2209 | XPROCESS (process)->tty_name = Qnil; |
2210 | } | |
3b9a3dfa | 2211 | |
4a127b3b KH |
2212 | /* Restore the signal state whether vfork succeeded or not. |
2213 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2214 | #ifdef POSIX_SIGNALS |
351e611f | 2215 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2216 | /* Restore the parent's signal handlers. */ |
2217 | sigaction (SIGINT, &sigint_action, 0); | |
2218 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2219 | #ifdef AIX | |
2220 | sigaction (SIGHUP, &sighup_action, 0); | |
2221 | #endif | |
351e611f | 2222 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2223 | /* Stop blocking signals in the parent. */ |
2224 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2225 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2226 | #ifdef SIGCHLD |
2227 | #ifdef BSD4_1 | |
2228 | sigrelse (SIGCHLD); | |
2229 | #else /* not BSD4_1 */ | |
e39a993c | 2230 | #if defined (BSD_SYSTEM) || defined (HPUX) |
d0d6b7c5 JB |
2231 | sigsetmask (SIGEMPTYMASK); |
2232 | #else /* ordinary USG */ | |
2233 | #if 0 | |
2234 | signal (SIGCHLD, sigchld); | |
2235 | /* Now really handle any of these signals | |
2236 | that came in during this function. */ | |
2237 | if (sigchld_deferred) | |
2238 | kill (getpid (), SIGCHLD); | |
2239 | #endif | |
2240 | #endif /* ordinary USG */ | |
2241 | #endif /* not BSD4_1 */ | |
2242 | #endif /* SIGCHLD */ | |
0dc70c33 | 2243 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2244 | |
2245 | /* Now generate the error if vfork failed. */ | |
2246 | if (pid < 0) | |
2247 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 JB |
2248 | } |
2249 | #endif /* not VMS */ | |
2250 | ||
e690ca94 | 2251 | \f |
d0d6b7c5 JB |
2252 | #ifdef HAVE_SOCKETS |
2253 | ||
e690ca94 KS |
2254 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2255 | The address family of sa is not included in the result. */ | |
2256 | ||
2257 | static Lisp_Object | |
2258 | conv_sockaddr_to_lisp (sa, len) | |
2259 | struct sockaddr *sa; | |
2260 | int len; | |
2261 | { | |
2262 | Lisp_Object address; | |
2263 | int i; | |
2264 | unsigned char *cp; | |
2265 | register struct Lisp_Vector *p; | |
2266 | ||
2267 | switch (sa->sa_family) | |
2268 | { | |
2269 | case AF_INET: | |
2270 | { | |
2271 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2272 | len = sizeof (sin->sin_addr) + 1; | |
2273 | address = Fmake_vector (make_number (len), Qnil); | |
2274 | p = XVECTOR (address); | |
2275 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
2276 | cp = (unsigned char *)&sin->sin_addr; | |
2277 | break; | |
2278 | } | |
e1652a86 KS |
2279 | #ifdef AF_INET6 |
2280 | case AF_INET6: | |
2281 | { | |
2282 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2283 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2284 | len = sizeof (sin6->sin6_addr)/2 + 1; | |
2285 | address = Fmake_vector (make_number (len), Qnil); | |
2286 | p = XVECTOR (address); | |
2287 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2288 | for (i = 0; i < len; i++) | |
2289 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2290 | return address; | |
2291 | } | |
2292 | #endif | |
e690ca94 KS |
2293 | #ifdef HAVE_LOCAL_SOCKETS |
2294 | case AF_LOCAL: | |
2295 | { | |
fb23673a EZ |
2296 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2297 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2298 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2299 | break; |
fb23673a | 2300 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2301 | } |
2302 | #endif | |
2303 | default: | |
2304 | len -= sizeof (sa->sa_family); | |
2305 | address = Fcons (make_number (sa->sa_family), | |
2306 | Fmake_vector (make_number (len), Qnil)); | |
2307 | p = XVECTOR (XCDR (address)); | |
2308 | cp = (unsigned char *) sa + sizeof (sa->sa_family); | |
2309 | break; | |
2310 | } | |
2311 | ||
2312 | i = 0; | |
2313 | while (i < len) | |
2314 | p->contents[i++] = make_number (*cp++); | |
2315 | ||
2316 | return address; | |
2317 | } | |
2318 | ||
2319 | ||
2320 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2321 | ||
2322 | static int | |
2323 | get_lisp_to_sockaddr_size (address, familyp) | |
2324 | Lisp_Object address; | |
2325 | int *familyp; | |
2326 | { | |
2327 | register struct Lisp_Vector *p; | |
2328 | ||
2329 | if (VECTORP (address)) | |
2330 | { | |
2331 | p = XVECTOR (address); | |
2332 | if (p->size == 5) | |
2333 | { | |
2334 | *familyp = AF_INET; | |
2335 | return sizeof (struct sockaddr_in); | |
2336 | } | |
e1652a86 KS |
2337 | #ifdef AF_INET6 |
2338 | else if (p->size == 9) | |
2339 | { | |
2340 | *familyp = AF_INET6; | |
2341 | return sizeof (struct sockaddr_in6); | |
2342 | } | |
2343 | #endif | |
e690ca94 KS |
2344 | } |
2345 | #ifdef HAVE_LOCAL_SOCKETS | |
2346 | else if (STRINGP (address)) | |
2347 | { | |
2348 | *familyp = AF_LOCAL; | |
2349 | return sizeof (struct sockaddr_un); | |
2350 | } | |
2351 | #endif | |
2352 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2353 | { | |
2354 | struct sockaddr *sa; | |
2355 | *familyp = XINT (XCAR (address)); | |
2356 | p = XVECTOR (XCDR (address)); | |
2357 | return p->size + sizeof (sa->sa_family); | |
2358 | } | |
2359 | return 0; | |
2360 | } | |
2361 | ||
2362 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2363 | |
2364 | The address format has been basically validated by | |
2365 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2366 | it could have come from user data. So if FAMILY is not valid, | |
2367 | we return after zeroing *SA. */ | |
e690ca94 KS |
2368 | |
2369 | static void | |
2370 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2371 | int family; | |
2372 | Lisp_Object address; | |
2373 | struct sockaddr *sa; | |
2374 | int len; | |
2375 | { | |
2376 | register struct Lisp_Vector *p; | |
34967d0f | 2377 | register unsigned char *cp = NULL; |
e690ca94 KS |
2378 | register int i; |
2379 | ||
2380 | bzero (sa, len); | |
e690ca94 KS |
2381 | |
2382 | if (VECTORP (address)) | |
2383 | { | |
2384 | p = XVECTOR (address); | |
2385 | if (family == AF_INET) | |
2386 | { | |
2387 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2388 | len = sizeof (sin->sin_addr) + 1; | |
2389 | i = XINT (p->contents[--len]); | |
2390 | sin->sin_port = htons (i); | |
2391 | cp = (unsigned char *)&sin->sin_addr; | |
9d1a8e5d | 2392 | sa->sa_family = family; |
e690ca94 | 2393 | } |
e1652a86 KS |
2394 | #ifdef AF_INET6 |
2395 | else if (family == AF_INET6) | |
2396 | { | |
2397 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2398 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2399 | len = sizeof (sin6->sin6_addr) + 1; | |
2400 | i = XINT (p->contents[--len]); | |
2401 | sin6->sin6_port = htons (i); | |
2402 | for (i = 0; i < len; i++) | |
2403 | if (INTEGERP (p->contents[i])) | |
2404 | { | |
2405 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2406 | ip6[i] = ntohs (j); | |
2407 | } | |
9d1a8e5d | 2408 | sa->sa_family = family; |
e1652a86 KS |
2409 | } |
2410 | #endif | |
6bf890d7 | 2411 | return; |
e690ca94 KS |
2412 | } |
2413 | else if (STRINGP (address)) | |
2414 | { | |
2415 | #ifdef HAVE_LOCAL_SOCKETS | |
2416 | if (family == AF_LOCAL) | |
2417 | { | |
fb23673a | 2418 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2419 | cp = SDATA (address); |
fb23673a EZ |
2420 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2421 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2422 | sa->sa_family = family; |
e690ca94 KS |
2423 | } |
2424 | #endif | |
2425 | return; | |
2426 | } | |
2427 | else | |
2428 | { | |
2429 | p = XVECTOR (XCDR (address)); | |
2430 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2431 | } | |
2432 | ||
2433 | for (i = 0; i < len; i++) | |
2434 | if (INTEGERP (p->contents[i])) | |
2435 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2436 | } | |
2437 | ||
2438 | #ifdef DATAGRAM_SOCKETS | |
2439 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2440 | 1, 1, 0, | |
2441 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2442 | (process) | |
2443 | Lisp_Object process; | |
2444 | { | |
2445 | int channel; | |
2446 | ||
2447 | CHECK_PROCESS (process); | |
2448 | ||
2449 | if (!DATAGRAM_CONN_P (process)) | |
2450 | return Qnil; | |
2451 | ||
60f0fb11 | 2452 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2453 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2454 | datagram_address[channel].len); | |
2455 | } | |
2456 | ||
2457 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2458 | 2, 2, 0, | |
2459 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2460 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2461 | (process, address) | |
2462 | Lisp_Object process, address; | |
2463 | { | |
2464 | int channel; | |
2465 | int family, len; | |
2466 | ||
2467 | CHECK_PROCESS (process); | |
2468 | ||
2469 | if (!DATAGRAM_CONN_P (process)) | |
2470 | return Qnil; | |
2471 | ||
60f0fb11 | 2472 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2473 | |
2474 | len = get_lisp_to_sockaddr_size (address, &family); | |
2475 | if (datagram_address[channel].len != len) | |
2476 | return Qnil; | |
2477 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2478 | return address; | |
2479 | } | |
2480 | #endif | |
2481 | \f | |
2482 | ||
2483 | static struct socket_options { | |
2484 | /* The name of this option. Should be lowercase version of option | |
177c0ea7 | 2485 | name without SO_ prefix. */ |
e690ca94 | 2486 | char *name; |
e690ca94 KS |
2487 | /* Option level SOL_... */ |
2488 | int optlevel; | |
2489 | /* Option number SO_... */ | |
2490 | int optnum; | |
6b61353c KH |
2491 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2492 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2493 | } socket_options[] = |
2494 | { | |
2495 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2496 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2497 | #endif |
2498 | #ifdef SO_BROADCAST | |
6b61353c | 2499 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2500 | #endif |
2501 | #ifdef SO_DONTROUTE | |
6b61353c | 2502 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2503 | #endif |
2504 | #ifdef SO_KEEPALIVE | |
6b61353c | 2505 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2506 | #endif |
2507 | #ifdef SO_LINGER | |
6b61353c | 2508 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2509 | #endif |
2510 | #ifdef SO_OOBINLINE | |
6b61353c | 2511 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2512 | #endif |
2513 | #ifdef SO_PRIORITY | |
6b61353c | 2514 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2515 | #endif |
2516 | #ifdef SO_REUSEADDR | |
6b61353c | 2517 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2518 | #endif |
6b61353c | 2519 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2520 | }; |
2521 | ||
6b61353c | 2522 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2523 | |
6b61353c KH |
2524 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2525 | Signals an error if setting a known option fails. | |
2526 | */ | |
e690ca94 KS |
2527 | |
2528 | static int | |
6b61353c | 2529 | set_socket_option (s, opt, val) |
e690ca94 | 2530 | int s; |
6b61353c | 2531 | Lisp_Object opt, val; |
e690ca94 | 2532 | { |
6b61353c KH |
2533 | char *name; |
2534 | struct socket_options *sopt; | |
2535 | int ret = 0; | |
e690ca94 | 2536 | |
6b61353c | 2537 | CHECK_SYMBOL (opt); |
e690ca94 | 2538 | |
6b61353c KH |
2539 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2540 | for (sopt = socket_options; sopt->name; sopt++) | |
2541 | if (strcmp (name, sopt->name) == 0) | |
2542 | break; | |
e690ca94 | 2543 | |
6b61353c KH |
2544 | switch (sopt->opttype) |
2545 | { | |
2546 | case SOPT_BOOL: | |
2547 | { | |
2548 | int optval; | |
2549 | optval = NILP (val) ? 0 : 1; | |
2550 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2551 | &optval, sizeof (optval)); | |
2552 | break; | |
2553 | } | |
e690ca94 | 2554 | |
6b61353c KH |
2555 | case SOPT_INT: |
2556 | { | |
2557 | int optval; | |
2558 | if (INTEGERP (val)) | |
2559 | optval = XINT (val); | |
2560 | else | |
2561 | error ("Bad option value for %s", name); | |
2562 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2563 | &optval, sizeof (optval)); | |
2564 | break; | |
2565 | } | |
e690ca94 | 2566 | |
6b61353c KH |
2567 | #ifdef SO_BINDTODEVICE |
2568 | case SOPT_IFNAME: | |
2569 | { | |
2570 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2571 | |
6b61353c KH |
2572 | /* This is broken, at least in the Linux 2.4 kernel. |
2573 | To unbind, the arg must be a zero integer, not the empty string. | |
2574 | This should work on all systems. KFS. 2003-09-23. */ | |
2575 | bzero (devname, sizeof devname); | |
2576 | if (STRINGP (val)) | |
e690ca94 | 2577 | { |
6b61353c KH |
2578 | char *arg = (char *) SDATA (val); |
2579 | int len = min (strlen (arg), IFNAMSIZ); | |
2580 | bcopy (arg, devname, len); | |
e690ca94 | 2581 | } |
6b61353c KH |
2582 | else if (!NILP (val)) |
2583 | error ("Bad option value for %s", name); | |
2584 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2585 | devname, IFNAMSIZ); | |
2586 | break; | |
2587 | } | |
2588 | #endif | |
e690ca94 | 2589 | |
177c0ea7 | 2590 | #ifdef SO_LINGER |
6b61353c KH |
2591 | case SOPT_LINGER: |
2592 | { | |
2593 | struct linger linger; | |
e690ca94 | 2594 | |
6b61353c KH |
2595 | linger.l_onoff = 1; |
2596 | linger.l_linger = 0; | |
2597 | if (INTEGERP (val)) | |
2598 | linger.l_linger = XINT (val); | |
2599 | else | |
2600 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2601 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2602 | &linger, sizeof (linger)); | |
2603 | break; | |
2604 | } | |
e690ca94 | 2605 | #endif |
6b61353c KH |
2606 | |
2607 | default: | |
2608 | return 0; | |
e690ca94 | 2609 | } |
6b61353c KH |
2610 | |
2611 | if (ret < 0) | |
2612 | report_file_error ("Cannot set network option", | |
2613 | Fcons (opt, Fcons (val, Qnil))); | |
2614 | return (1 << sopt->optbit); | |
e690ca94 KS |
2615 | } |
2616 | ||
6b61353c KH |
2617 | |
2618 | DEFUN ("set-network-process-option", | |
2619 | Fset_network_process_option, Sset_network_process_option, | |
2620 | 3, 4, 0, | |
2621 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2622 | See `make-network-process' for a list of options and values. | |
2623 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2624 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2625 | (process, option, value, no_error) | |
2626 | Lisp_Object process, option, value; | |
2627 | Lisp_Object no_error; | |
e690ca94 | 2628 | { |
6b61353c KH |
2629 | int s; |
2630 | struct Lisp_Process *p; | |
e690ca94 | 2631 | |
e690ca94 | 2632 | CHECK_PROCESS (process); |
6b61353c KH |
2633 | p = XPROCESS (process); |
2634 | if (!NETCONN1_P (p)) | |
2635 | error ("Process is not a network process"); | |
2636 | ||
60f0fb11 | 2637 | s = p->infd; |
6b61353c KH |
2638 | if (s < 0) |
2639 | error ("Process is not running"); | |
2640 | ||
2641 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2642 | { |
6b61353c KH |
2643 | p->childp = Fplist_put (p->childp, option, value); |
2644 | return Qt; | |
e690ca94 | 2645 | } |
6b61353c KH |
2646 | |
2647 | if (NILP (no_error)) | |
2648 | error ("Unknown or unsupported option"); | |
2649 | ||
2650 | return Qnil; | |
e690ca94 | 2651 | } |
6b61353c | 2652 | |
e690ca94 | 2653 | \f |
e690ca94 KS |
2654 | /* A version of request_sigio suitable for a record_unwind_protect. */ |
2655 | ||
98228e72 | 2656 | #ifdef __ultrix__ |
ff6daed3 | 2657 | static Lisp_Object |
e690ca94 KS |
2658 | unwind_request_sigio (dummy) |
2659 | Lisp_Object dummy; | |
2660 | { | |
2661 | if (interrupt_input) | |
2662 | request_sigio (); | |
2663 | return Qnil; | |
2664 | } | |
98228e72 | 2665 | #endif |
e690ca94 KS |
2666 | |
2667 | /* Create a network stream/datagram client/server process. Treated | |
2668 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2669 | differences are in status display and process deletion. A network |
2670 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2671 | stop/continue it and deactivate/close it via delete-process */ |
2672 | ||
177c0ea7 JB |
2673 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2674 | 0, MANY, 0, | |
e690ca94 KS |
2675 | doc: /* Create and return a network server or client process. |
2676 | ||
fa9d4315 | 2677 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2678 | input and output work as for subprocesses and `delete-process' closes |
2679 | a network connection. However, a network process has no process id, | |
d22426e1 | 2680 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2681 | processes. |
2682 | ||
2683 | Arguments are specified as keyword/argument pairs. The following | |
2684 | arguments are defined: | |
2685 | ||
2686 | :name NAME -- NAME is name for process. It is modified if necessary | |
2687 | to make it unique. | |
2688 | ||
2689 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2690 | with the process. Process output goes at end of that buffer, unless | |
2691 | you specify an output stream or filter function to handle the output. | |
2692 | BUFFER may be also nil, meaning that this process is not associated | |
2693 | with any buffer. | |
2694 | ||
2695 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2696 | address. The symbol `local' specifies the local host. If specified | |
2697 | for a server process, it must be a valid name or address for the local | |
2698 | host, and only clients connecting to that address will be accepted. | |
2699 | ||
2700 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2701 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2702 | a random port number is selected for the server. (If Emacs was |
2703 | compiled with getaddrinfo, a port number can also be specified as a | |
2704 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2705 | |
9057ff80 KS |
2706 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
2707 | stream type connection, `datagram' creates a datagram type connection. | |
2708 | ||
e690ca94 | 2709 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2710 | service specified by HOST and SERVICE. The default (nil) is to use |
2711 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2712 | and port number specified by HOST and SERVICE. Other address families | |
2713 | supported are: | |
e690ca94 | 2714 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2715 | ipv4 -- use IPv4 address family only. |
2716 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2717 | |
2718 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2719 | This parameter is ignored when opening a client process. When specified | |
2720 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2721 | ||
2722 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2723 | connection. This parameter is ignored when opening a stream server | |
2724 | process. For a datagram server process, it specifies the initial | |
2725 | setting of the remote datagram address. When specified for a client | |
2726 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2727 | ||
2728 | The format of ADDRESS depends on the address family: | |
2729 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2730 | corresponding to numeric IP address A.B.C.D and port number P. | |
2731 | - A local address is represented as a string with the address in the | |
2732 | local address space. | |
2733 | - An "unsupported family" address is represented by a cons (F . AV) | |
2734 | where F is the family number and AV is a vector containing the socket | |
2735 | address data with one element per address data byte. Do not rely on | |
2736 | this format in portable code, as it may depend on implementation | |
2737 | defined constants, data sizes, and data structure alignment. | |
2738 | ||
6b61353c KH |
2739 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2740 | system used for both reading and writing for this process. If CODING | |
2741 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2742 | ENCODING is used for writing. | |
e690ca94 KS |
2743 | |
2744 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2745 | return without waiting for the connection to complete; instead, the | |
2746 | sentinel function will be called with second arg matching "open" (if | |
2747 | successful) or "failed" when the connect completes. Default is to use | |
2748 | a blocking connect (i.e. wait) for stream type connections. | |
2749 | ||
2750 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2751 | running when Emacs is exited. |
e690ca94 KS |
2752 | |
2753 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2754 | In the stopped state, a server process does not accept new | |
2755 | connections, and a client process does not handle incoming traffic. | |
2756 | The stopped state is cleared by `continue-process' and set by | |
2757 | `stop-process'. | |
2758 | ||
2759 | :filter FILTER -- Install FILTER as the process filter. | |
2760 | ||
7392e23c KS |
2761 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2762 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2763 | If this keyword is not specified, the strings are multibyte if |
03f04413 KH |
2764 | `default-enable-multibyte-characters' is non-nil. |
2765 | ||
e690ca94 KS |
2766 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2767 | ||
2768 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2769 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2770 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2771 | is the server process, CLIENT is the new process for the connection, | |
2772 | and MESSAGE is a string. | |
2773 | ||
faa7db08 | 2774 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2775 | |
6b61353c | 2776 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2777 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2778 | If QLEN is an integer, it is used as the max. length of the server's |
2779 | pending connection queue (also known as the backlog); the default | |
2780 | queue length is 5. Default is to create a client process. | |
2781 | ||
2782 | The following network options can be specified for this connection: | |
2783 | ||
2784 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2785 | :dontroute BOOL -- Only send to directly connected hosts. | |
2786 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2787 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2788 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2789 | :priority INT -- Set protocol defined priority for sent packets. | |
2790 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2791 | (this is allowed by default for a server process). | |
2792 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2793 | special privileges on some systems. | |
2794 | ||
2795 | Consult the relevant system programmer's manual pages for more | |
2796 | information on using these options. | |
2797 | ||
2798 | ||
2799 | A server process will listen for and accept connections from clients. | |
2800 | When a client connection is accepted, a new network process is created | |
2801 | for the connection with the following parameters: | |
e690ca94 | 2802 | |
e690ca94 KS |
2803 | - The client's process name is constructed by concatenating the server |
2804 | process' NAME and a client identification string. | |
2805 | - If the FILTER argument is non-nil, the client process will not get a | |
2806 | separate process buffer; otherwise, the client's process buffer is a newly | |
2807 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2808 | NAME concatenated with the client identification string. |
e690ca94 KS |
2809 | - The connection type and the process filter and sentinel parameters are |
2810 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2811 | - The client process' contact info is set according to the client's | |
2812 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2813 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2814 | |
2815 | Notice that the FILTER and SENTINEL args are never used directly by | |
2816 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2817 | the server process, but via the optional :log function, accepted (and |
2818 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2819 | |
365aee82 KS |
2820 | The original argument list, modified with the actual connection |
2821 | information, is available via the `process-contact' function. | |
365aee82 | 2822 | |
fa9d4315 | 2823 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
2824 | (nargs, args) |
2825 | int nargs; | |
2826 | Lisp_Object *args; | |
d0d6b7c5 JB |
2827 | { |
2828 | Lisp_Object proc; | |
e690ca94 KS |
2829 | Lisp_Object contact; |
2830 | struct Lisp_Process *p; | |
70dbdb36 | 2831 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2832 | struct addrinfo ai, *res, *lres; |
e1652a86 KS |
2833 | struct addrinfo hints; |
2834 | char *portstring, portbuf[128]; | |
70dbdb36 | 2835 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2836 | struct _emacs_addrinfo |
2837 | { | |
2838 | int ai_family; | |
2839 | int ai_socktype; | |
2840 | int ai_protocol; | |
2841 | int ai_addrlen; | |
2842 | struct sockaddr *ai_addr; | |
2843 | struct _emacs_addrinfo *ai_next; | |
2844 | } ai, *res, *lres; | |
418b48fd | 2845 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2846 | struct sockaddr_in address_in; |
2847 | #ifdef HAVE_LOCAL_SOCKETS | |
2848 | struct sockaddr_un address_un; | |
2849 | #endif | |
2850 | int port; | |
dd2a17ab KS |
2851 | int ret = 0; |
2852 | int xerrno = 0; | |
418b48fd | 2853 | int s = -1, outch, inch; |
e690ca94 | 2854 | struct gcpro gcpro1; |
aed13378 | 2855 | int count = SPECPDL_INDEX (); |
5684cd6e | 2856 | int count1; |
e690ca94 KS |
2857 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2858 | Lisp_Object tem; | |
2859 | Lisp_Object name, buffer, host, service, address; | |
2860 | Lisp_Object filter, sentinel; | |
2861 | int is_non_blocking_client = 0; | |
6b61353c | 2862 | int is_server = 0, backlog = 5; |
9057ff80 | 2863 | int socktype; |
e690ca94 KS |
2864 | int family = -1; |
2865 | ||
2866 | if (nargs == 0) | |
2867 | return Qnil; | |
dd2a17ab | 2868 | |
e690ca94 KS |
2869 | /* Save arguments for process-contact and clone-process. */ |
2870 | contact = Flist (nargs, args); | |
2871 | GCPRO1 (contact); | |
2872 | ||
bff3ed0a RS |
2873 | #ifdef WINDOWSNT |
2874 | /* Ensure socket support is loaded if available. */ | |
2875 | init_winsock (TRUE); | |
2876 | #endif | |
2877 | ||
9057ff80 KS |
2878 | /* :type TYPE (nil: stream, datagram */ |
2879 | tem = Fplist_get (contact, QCtype); | |
2880 | if (NILP (tem)) | |
2881 | socktype = SOCK_STREAM; | |
2882 | #ifdef DATAGRAM_SOCKETS | |
2883 | else if (EQ (tem, Qdatagram)) | |
2884 | socktype = SOCK_DGRAM; | |
e690ca94 | 2885 | #endif |
9057ff80 KS |
2886 | else |
2887 | error ("Unsupported connection type"); | |
e690ca94 KS |
2888 | |
2889 | /* :server BOOL */ | |
2890 | tem = Fplist_get (contact, QCserver); | |
2891 | if (!NILP (tem)) | |
2892 | { | |
75728599 JR |
2893 | /* Don't support network sockets when non-blocking mode is |
2894 | not available, since a blocked Emacs is not useful. */ | |
2895 | #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY)) | |
e690ca94 KS |
2896 | error ("Network servers not supported"); |
2897 | #else | |
2898 | is_server = 1; | |
6b61353c KH |
2899 | if (INTEGERP (tem)) |
2900 | backlog = XINT (tem); | |
e690ca94 KS |
2901 | #endif |
2902 | } | |
2903 | ||
2904 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2905 | QCaddress = is_server ? QClocal : QCremote; | |
2906 | ||
d7e344cd | 2907 | /* :nowait BOOL */ |
e690ca94 KS |
2908 | if (!is_server && socktype == SOCK_STREAM |
2909 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) | |
2910 | { | |
2911 | #ifndef NON_BLOCKING_CONNECT | |
2912 | error ("Non-blocking connect not supported"); | |
2913 | #else | |
2914 | is_non_blocking_client = 1; | |
2915 | #endif | |
2916 | } | |
2917 | ||
2918 | name = Fplist_get (contact, QCname); | |
2919 | buffer = Fplist_get (contact, QCbuffer); | |
2920 | filter = Fplist_get (contact, QCfilter); | |
2921 | sentinel = Fplist_get (contact, QCsentinel); | |
2922 | ||
b7826503 | 2923 | CHECK_STRING (name); |
e690ca94 KS |
2924 | |
2925 | #ifdef TERM | |
2926 | /* Let's handle TERM before things get complicated ... */ | |
2927 | host = Fplist_get (contact, QChost); | |
b7826503 | 2928 | CHECK_STRING (host); |
177c0ea7 | 2929 | |
e690ca94 KS |
2930 | service = Fplist_get (contact, QCservice); |
2931 | if (INTEGERP (service)) | |
2932 | port = htons ((unsigned short) XINT (service)); | |
2933 | else | |
2934 | { | |
2935 | struct servent *svc_info; | |
2936 | CHECK_STRING (service); | |
d5db4077 | 2937 | svc_info = getservbyname (SDATA (service), "tcp"); |
e690ca94 | 2938 | if (svc_info == 0) |
d5db4077 | 2939 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2940 | port = svc_info->s_port; |
2941 | } | |
2942 | ||
2943 | s = connect_server (0); | |
2944 | if (s < 0) | |
2945 | report_file_error ("error creating socket", Fcons (name, Qnil)); | |
d5db4077 | 2946 | send_command (s, C_PORT, 0, "%s:%d", SDATA (host), ntohs (port)); |
e690ca94 KS |
2947 | send_command (s, C_DUMB, 1, 0); |
2948 | ||
2949 | #else /* not TERM */ | |
2950 | ||
2951 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ | |
2952 | ai.ai_socktype = socktype; | |
2953 | ai.ai_protocol = 0; | |
2954 | ai.ai_next = NULL; | |
2955 | res = &ai; | |
a319f7c1 | 2956 | |
e690ca94 KS |
2957 | /* :local ADDRESS or :remote ADDRESS */ |
2958 | address = Fplist_get (contact, QCaddress); | |
2959 | if (!NILP (address)) | |
a319f7c1 | 2960 | { |
e690ca94 KS |
2961 | host = service = Qnil; |
2962 | ||
2963 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2964 | error ("Malformed :address"); | |
2965 | ai.ai_family = family; | |
2966 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2967 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2968 | goto open_socket; | |
a319f7c1 | 2969 | } |
e690ca94 KS |
2970 | |
2971 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2972 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 2973 | if (NILP (tem)) |
a319f7c1 | 2974 | { |
87b6ca8d | 2975 | #if defined(HAVE_GETADDRINFO) && defined(AF_INET6) |
e1652a86 KS |
2976 | family = AF_UNSPEC; |
2977 | #else | |
2978 | family = AF_INET; | |
e690ca94 | 2979 | #endif |
a319f7c1 | 2980 | } |
e1652a86 KS |
2981 | #ifdef HAVE_LOCAL_SOCKETS |
2982 | else if (EQ (tem, Qlocal)) | |
2983 | family = AF_LOCAL; | |
2984 | #endif | |
2985 | #ifdef AF_INET6 | |
2986 | else if (EQ (tem, Qipv6)) | |
2987 | family = AF_INET6; | |
2988 | #endif | |
2989 | else if (EQ (tem, Qipv4)) | |
2990 | family = AF_INET; | |
2991 | else if (INTEGERP (tem)) | |
2992 | family = XINT (tem); | |
2993 | else | |
e690ca94 | 2994 | error ("Unknown address family"); |
e1652a86 | 2995 | |
e690ca94 KS |
2996 | ai.ai_family = family; |
2997 | ||
2998 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2999 | service = Fplist_get (contact, QCservice); | |
3000 | ||
3001 | #ifdef HAVE_LOCAL_SOCKETS | |
3002 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3003 | { |
e690ca94 KS |
3004 | /* Host is not used. */ |
3005 | host = Qnil; | |
b7826503 | 3006 | CHECK_STRING (service); |
e690ca94 KS |
3007 | bzero (&address_un, sizeof address_un); |
3008 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 3009 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
3010 | ai.ai_addr = (struct sockaddr *) &address_un; |
3011 | ai.ai_addrlen = sizeof address_un; | |
3012 | goto open_socket; | |
d0d6b7c5 | 3013 | } |
e690ca94 | 3014 | #endif |
a319f7c1 | 3015 | |
e690ca94 KS |
3016 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3017 | host = Fplist_get (contact, QChost); | |
3018 | if (!NILP (host)) | |
3019 | { | |
3020 | if (EQ (host, Qlocal)) | |
3021 | host = build_string ("localhost"); | |
3022 | CHECK_STRING (host); | |
3023 | } | |
d0d6b7c5 | 3024 | |
798b64bb KH |
3025 | /* Slow down polling to every ten seconds. |
3026 | Some kernels have a bug which causes retrying connect to fail | |
3027 | after a connect. Polling can interfere with gethostbyname too. */ | |
3028 | #ifdef POLL_FOR_INPUT | |
e690ca94 KS |
3029 | if (socktype == SOCK_STREAM) |
3030 | { | |
3031 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3032 | bind_polling_period (10); | |
3033 | } | |
798b64bb KH |
3034 | #endif |
3035 | ||
a319f7c1 | 3036 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3037 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3038 | Otherwise, use getservbyname to lookup the service. */ | |
3039 | if (!NILP (host)) | |
3040 | { | |
3041 | ||
3042 | /* SERVICE can either be a string or int. | |
3043 | Convert to a C string for later use by getaddrinfo. */ | |
3044 | if (EQ (service, Qt)) | |
3045 | portstring = "0"; | |
3046 | else if (INTEGERP (service)) | |
3047 | { | |
3048 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
3049 | portstring = portbuf; | |
3050 | } | |
3051 | else | |
3052 | { | |
3053 | CHECK_STRING (service); | |
d5db4077 | 3054 | portstring = SDATA (service); |
e690ca94 KS |
3055 | } |
3056 | ||
3057 | immediate_quit = 1; | |
3058 | QUIT; | |
3059 | memset (&hints, 0, sizeof (hints)); | |
3060 | hints.ai_flags = 0; | |
e1652a86 | 3061 | hints.ai_family = family; |
e690ca94 KS |
3062 | hints.ai_socktype = socktype; |
3063 | hints.ai_protocol = 0; | |
08116b48 CY |
3064 | |
3065 | #ifdef HAVE_RES_INIT | |
3066 | res_init (); | |
3067 | #endif | |
3068 | ||
d5db4077 | 3069 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 3070 | if (ret) |
f6270f62 | 3071 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 3072 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 3073 | #else |
d5db4077 | 3074 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 3075 | #endif |
e690ca94 | 3076 | immediate_quit = 0; |
a319f7c1 | 3077 | |
e690ca94 KS |
3078 | goto open_socket; |
3079 | } | |
3080 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3081 | |
e690ca94 KS |
3082 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3083 | has been specified (e.g. for a local server process). */ | |
3084 | ||
3085 | if (EQ (service, Qt)) | |
3086 | port = 0; | |
3087 | else if (INTEGERP (service)) | |
3088 | port = htons ((unsigned short) XINT (service)); | |
3089 | else | |
616da37c | 3090 | { |
e690ca94 KS |
3091 | struct servent *svc_info; |
3092 | CHECK_STRING (service); | |
177c0ea7 | 3093 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
3094 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3095 | if (svc_info == 0) | |
d5db4077 | 3096 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3097 | port = svc_info->s_port; |
3098 | } | |
3099 | ||
3100 | bzero (&address_in, sizeof address_in); | |
3101 | address_in.sin_family = family; | |
3102 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3103 | address_in.sin_port = port; | |
3104 | ||
3105 | #ifndef HAVE_GETADDRINFO | |
3106 | if (!NILP (host)) | |
3107 | { | |
3108 | struct hostent *host_info_ptr; | |
3109 | ||
3110 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 3111 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3112 | immediate_quit = 1; |
3113 | QUIT; | |
08116b48 CY |
3114 | |
3115 | #ifdef HAVE_RES_INIT | |
3116 | res_init (); | |
3117 | #endif | |
3118 | ||
d5db4077 | 3119 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3120 | immediate_quit = 0; |
177c0ea7 | 3121 | |
e690ca94 KS |
3122 | if (host_info_ptr) |
3123 | { | |
3124 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
3125 | host_info_ptr->h_length); | |
3126 | family = host_info_ptr->h_addrtype; | |
3127 | address_in.sin_family = family; | |
3128 | } | |
3129 | else | |
3130 | /* Attempt to interpret host as numeric inet address */ | |
3131 | { | |
4624371d | 3132 | unsigned long numeric_addr; |
d5db4077 | 3133 | numeric_addr = inet_addr ((char *) SDATA (host)); |
4624371d | 3134 | if (numeric_addr == -1) |
d5db4077 | 3135 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3136 | |
e690ca94 KS |
3137 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
3138 | sizeof (address_in.sin_addr)); | |
3139 | } | |
d0d6b7c5 | 3140 | |
e690ca94 | 3141 | } |
dd2a17ab | 3142 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3143 | |
e690ca94 KS |
3144 | ai.ai_family = family; |
3145 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3146 | ai.ai_addrlen = sizeof address_in; | |
3147 | ||
3148 | open_socket: | |
3149 | ||
6bbba5a6 KL |
3150 | #ifdef __ultrix__ |
3151 | /* Previously this was compiled unconditionally, but that seems | |
3152 | unnecessary on modern systems, and `unrequest_sigio' was a noop | |
3153 | under X anyway. --lorentey */ | |
e690ca94 KS |
3154 | /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR) |
3155 | when connect is interrupted. So let's not let it get interrupted. | |
3156 | Note we do not turn off polling, because polling is only used | |
3157 | when not interrupt_input, and thus not normally used on the systems | |
3158 | which have this bug. On systems which use polling, there's no way | |
3159 | to quit if polling is turned off. */ | |
3160 | if (interrupt_input | |
3161 | && !is_server && socktype == SOCK_STREAM) | |
3162 | { | |
3163 | /* Comment from KFS: The original open-network-stream code | |
3164 | didn't unwind protect this, but it seems like the proper | |
3165 | thing to do. In any case, I don't see how it could harm to | |
3166 | do this -- and it makes cleanup (using unbind_to) easier. */ | |
3167 | record_unwind_protect (unwind_request_sigio, Qnil); | |
3168 | unrequest_sigio (); | |
3169 | } | |
6bbba5a6 | 3170 | #endif |
e690ca94 | 3171 | |
dd2a17ab | 3172 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3173 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3174 | s = -1; |
457a9bee | 3175 | |
dd2a17ab KS |
3176 | for (lres = res; lres; lres = lres->ai_next) |
3177 | { | |
6b61353c KH |
3178 | int optn, optbits; |
3179 | ||
4e9dd03b KS |
3180 | retry_connect: |
3181 | ||
dd2a17ab KS |
3182 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3183 | if (s < 0) | |
3184 | { | |
3185 | xerrno = errno; | |
3186 | continue; | |
3187 | } | |
0f2ee0c1 | 3188 | |
e690ca94 KS |
3189 | #ifdef DATAGRAM_SOCKETS |
3190 | if (!is_server && socktype == SOCK_DGRAM) | |
3191 | break; | |
3192 | #endif /* DATAGRAM_SOCKETS */ | |
3193 | ||
dd2a17ab | 3194 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3195 | if (is_non_blocking_client) |
dd2a17ab KS |
3196 | { |
3197 | #ifdef O_NONBLOCK | |
3198 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3199 | #else | |
3200 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3201 | #endif | |
3202 | if (ret < 0) | |
3203 | { | |
3204 | xerrno = errno; | |
3205 | emacs_close (s); | |
3206 | s = -1; | |
3207 | continue; | |
3208 | } | |
3209 | } | |
3210 | #endif | |
177c0ea7 | 3211 | |
dd2a17ab | 3212 | /* Make us close S if quit. */ |
dd2a17ab KS |
3213 | record_unwind_protect (close_file_unwind, make_number (s)); |
3214 | ||
6b61353c KH |
3215 | /* Parse network options in the arg list. |
3216 | We simply ignore anything which isn't a known option (including other keywords). | |
3217 | An error is signalled if setting a known option fails. */ | |
3218 | for (optn = optbits = 0; optn < nargs-1; optn += 2) | |
3219 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3220 | ||
e690ca94 KS |
3221 | if (is_server) |
3222 | { | |
3223 | /* Configure as a server socket. */ | |
6b61353c KH |
3224 | |
3225 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3226 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3227 | #ifdef HAVE_LOCAL_SOCKETS |
3228 | if (family != AF_LOCAL) | |
3229 | #endif | |
6b61353c KH |
3230 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3231 | { | |
3232 | int optval = 1; | |
3233 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3234 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3235 | } | |
177c0ea7 | 3236 | |
e690ca94 KS |
3237 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3238 | report_file_error ("Cannot bind server socket", Qnil); | |
3239 | ||
3240 | #ifdef HAVE_GETSOCKNAME | |
3241 | if (EQ (service, Qt)) | |
3242 | { | |
3243 | struct sockaddr_in sa1; | |
3244 | int len1 = sizeof (sa1); | |
3245 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3246 | { | |
3247 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3248 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3249 | contact = Fplist_put (contact, QCservice, service); |
3250 | } | |
3251 | } | |
3252 | #endif | |
3253 | ||
6b61353c | 3254 | if (socktype == SOCK_STREAM && listen (s, backlog)) |
e690ca94 KS |
3255 | report_file_error ("Cannot listen on server socket", Qnil); |
3256 | ||
3257 | break; | |
3258 | } | |
3259 | ||
dd2a17ab KS |
3260 | immediate_quit = 1; |
3261 | QUIT; | |
3262 | ||
3263 | /* This turns off all alarm-based interrupts; the | |
3264 | bind_polling_period call above doesn't always turn all the | |
3265 | short-interval ones off, especially if interrupt_input is | |
3266 | set. | |
3267 | ||
3268 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3269 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3270 | |
3271 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3272 | ||
f40f9848 | 3273 | turn_on_atimers (0); |
dd2a17ab KS |
3274 | |
3275 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3276 | xerrno = errno; | |
3277 | ||
f40f9848 | 3278 | turn_on_atimers (1); |
dd2a17ab KS |
3279 | |
3280 | if (ret == 0 || xerrno == EISCONN) | |
3281 | { | |
dd2a17ab KS |
3282 | /* The unwind-protect will be discarded afterwards. |
3283 | Likewise for immediate_quit. */ | |
3284 | break; | |
3285 | } | |
3286 | ||
3287 | #ifdef NON_BLOCKING_CONNECT | |
3288 | #ifdef EINPROGRESS | |
e690ca94 | 3289 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3290 | break; |
3291 | #else | |
3292 | #ifdef EWOULDBLOCK | |
e690ca94 | 3293 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3294 | break; |
3295 | #endif | |
3296 | #endif | |
3297 | #endif | |
e333e864 | 3298 | |
0f2ee0c1 RS |
3299 | immediate_quit = 0; |
3300 | ||
dd2a17ab | 3301 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3302 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3303 | emacs_close (s); |
dd2a17ab | 3304 | s = -1; |
4e9dd03b KS |
3305 | |
3306 | if (xerrno == EINTR) | |
3307 | goto retry_connect; | |
dd2a17ab | 3308 | } |
457a9bee | 3309 | |
e690ca94 KS |
3310 | if (s >= 0) |
3311 | { | |
3312 | #ifdef DATAGRAM_SOCKETS | |
3313 | if (socktype == SOCK_DGRAM) | |
3314 | { | |
3315 | if (datagram_address[s].sa) | |
3316 | abort (); | |
3317 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3318 | datagram_address[s].len = lres->ai_addrlen; | |
3319 | if (is_server) | |
3320 | { | |
3321 | Lisp_Object remote; | |
3322 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3323 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3324 | { | |
3325 | int rfamily, rlen; | |
3326 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3327 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3328 | conv_lisp_to_sockaddr (rfamily, remote, | |
3329 | datagram_address[s].sa, rlen); | |
3330 | } | |
3331 | } | |
3332 | else | |
3333 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3334 | } | |
3335 | #endif | |
177c0ea7 | 3336 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3337 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3338 | #ifdef HAVE_GETSOCKNAME |
3339 | if (!is_server) | |
3340 | { | |
3341 | struct sockaddr_in sa1; | |
3342 | int len1 = sizeof (sa1); | |
3343 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3344 | contact = Fplist_put (contact, QClocal, | |
3345 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3346 | } | |
3347 | #endif | |
e690ca94 KS |
3348 | } |
3349 | ||
54b3b62f YM |
3350 | immediate_quit = 0; |
3351 | ||
dd2a17ab | 3352 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3353 | if (res != &ai) |
54b3b62f YM |
3354 | { |
3355 | BLOCK_INPUT; | |
3356 | freeaddrinfo (res); | |
3357 | UNBLOCK_INPUT; | |
3358 | } | |
dd2a17ab KS |
3359 | #endif |
3360 | ||
e690ca94 KS |
3361 | /* Discard the unwind protect for closing S, if any. */ |
3362 | specpdl_ptr = specpdl + count1; | |
3363 | ||
3364 | /* Unwind bind_polling_period and request_sigio. */ | |
3365 | unbind_to (count, Qnil); | |
3366 | ||
dd2a17ab KS |
3367 | if (s < 0) |
3368 | { | |
dd2a17ab KS |
3369 | /* If non-blocking got this far - and failed - assume non-blocking is |
3370 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3371 | the normal blocking calls to open-network-stream handles this error |
3372 | better. */ | |
3373 | if (is_non_blocking_client) | |
dd2a17ab | 3374 | return Qnil; |
dd2a17ab | 3375 | |
d0d6b7c5 | 3376 | errno = xerrno; |
e690ca94 KS |
3377 | if (is_server) |
3378 | report_file_error ("make server process failed", contact); | |
3379 | else | |
3380 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3381 | } |
44ade2e9 | 3382 | |
e690ca94 | 3383 | #endif /* not TERM */ |
d0d6b7c5 JB |
3384 | |
3385 | inch = s; | |
59f23005 | 3386 | outch = s; |
d0d6b7c5 JB |
3387 | |
3388 | if (!NILP (buffer)) | |
3389 | buffer = Fget_buffer_create (buffer); | |
3390 | proc = make_process (name); | |
3391 | ||
3392 | chan_process[inch] = proc; | |
3393 | ||
3394 | #ifdef O_NONBLOCK | |
3395 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3396 | #else | |
3397 | #ifdef O_NDELAY | |
3398 | fcntl (inch, F_SETFL, O_NDELAY); | |
3399 | #endif | |
3400 | #endif | |
3401 | ||
e690ca94 KS |
3402 | p = XPROCESS (proc); |
3403 | ||
3404 | p->childp = contact; | |
faa7db08 | 3405 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
177c0ea7 | 3406 | |
e690ca94 KS |
3407 | p->buffer = buffer; |
3408 | p->sentinel = sentinel; | |
3409 | p->filter = filter; | |
60f0fb11 | 3410 | p->filter_multibyte = !NILP (buffer_defaults.enable_multibyte_characters); |
03f04413 KH |
3411 | /* Override the above only if :filter-multibyte is specified. */ |
3412 | if (! NILP (Fplist_member (contact, QCfilter_multibyte))) | |
60f0fb11 | 3413 | p->filter_multibyte = !NILP (Fplist_get (contact, QCfilter_multibyte)); |
e690ca94 KS |
3414 | p->log = Fplist_get (contact, QClog); |
3415 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
60f0fb11 | 3416 | p->kill_without_query = 1; |
e690ca94 KS |
3417 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
3418 | p->command = Qt; | |
6bfd98e7 | 3419 | p->pid = 0; |
60f0fb11 SM |
3420 | p->infd = inch; |
3421 | p->outfd = outch; | |
e690ca94 KS |
3422 | if (is_server && socktype == SOCK_STREAM) |
3423 | p->status = Qlisten; | |
dd2a17ab | 3424 | |
f523e0c3 SM |
3425 | /* Make the process marker point into the process buffer (if any). */ |
3426 | if (BUFFERP (buffer)) | |
3427 | set_marker_both (p->mark, buffer, | |
3428 | BUF_ZV (XBUFFER (buffer)), | |
3429 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3430 | ||
dd2a17ab | 3431 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3432 | if (is_non_blocking_client) |
dd2a17ab KS |
3433 | { |
3434 | /* We may get here if connect did succeed immediately. However, | |
3435 | in that case, we still need to signal this like a non-blocking | |
3436 | connection. */ | |
e690ca94 | 3437 | p->status = Qconnect; |
dd2a17ab KS |
3438 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3439 | { | |
3440 | FD_SET (inch, &connect_wait_mask); | |
3441 | num_pending_connects++; | |
3442 | } | |
3443 | } | |
3444 | else | |
3445 | #endif | |
e690ca94 KS |
3446 | /* A server may have a client filter setting of Qt, but it must |
3447 | still listen for incoming connects unless it is stopped. */ | |
3448 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3449 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3450 | { |
3451 | FD_SET (inch, &input_wait_mask); | |
3452 | FD_SET (inch, &non_keyboard_wait_mask); | |
3453 | } | |
3454 | ||
7d0e672e RS |
3455 | if (inch > max_process_desc) |
3456 | max_process_desc = inch; | |
d0d6b7c5 | 3457 | |
e690ca94 KS |
3458 | tem = Fplist_member (contact, QCcoding); |
3459 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3460 | tem = Qnil; /* No error message (too late!). */ | |
3461 | ||
67918941 RS |
3462 | { |
3463 | /* Setup coding systems for communicating with the network stream. */ | |
3464 | struct gcpro gcpro1; | |
3465 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3466 | Lisp_Object coding_systems = Qt; | |
3467 | Lisp_Object args[5], val; | |
3468 | ||
e690ca94 | 3469 | if (!NILP (tem)) |
6b61353c KH |
3470 | { |
3471 | val = XCAR (XCDR (tem)); | |
3472 | if (CONSP (val)) | |
3473 | val = XCAR (val); | |
3474 | } | |
e690ca94 | 3475 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3476 | val = Vcoding_system_for_read; |
41d03b9a GM |
3477 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3478 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3479 | /* We dare not decode end-of-line format by setting VAL to |
3480 | Qraw_text, because the existing Emacs Lisp libraries | |
3481 | assume that they receive bare code including a sequene of | |
3482 | CR LF. */ | |
3483 | val = Qnil; | |
3484 | else | |
3485 | { | |
991234f0 KS |
3486 | if (NILP (host) || NILP (service)) |
3487 | coding_systems = Qnil; | |
3488 | else | |
3489 | { | |
3490 | args[0] = Qopen_network_stream, args[1] = name, | |
3491 | args[2] = buffer, args[3] = host, args[4] = service; | |
3492 | GCPRO1 (proc); | |
3493 | coding_systems = Ffind_operation_coding_system (5, args); | |
3494 | UNGCPRO; | |
3495 | } | |
67918941 | 3496 | if (CONSP (coding_systems)) |
70949dac | 3497 | val = XCAR (coding_systems); |
67918941 | 3498 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3499 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3500 | else |
3501 | val = Qnil; | |
3502 | } | |
e690ca94 | 3503 | p->decode_coding_system = val; |
0fa1789e | 3504 | |
e690ca94 | 3505 | if (!NILP (tem)) |
6b61353c KH |
3506 | { |
3507 | val = XCAR (XCDR (tem)); | |
3508 | if (CONSP (val)) | |
3509 | val = XCDR (val); | |
3510 | } | |
e690ca94 | 3511 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3512 | val = Vcoding_system_for_write; |
3513 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3514 | val = Qnil; | |
3515 | else | |
3516 | { | |
3517 | if (EQ (coding_systems, Qt)) | |
3518 | { | |
991234f0 KS |
3519 | if (NILP (host) || NILP (service)) |
3520 | coding_systems = Qnil; | |
3521 | else | |
3522 | { | |
3523 | args[0] = Qopen_network_stream, args[1] = name, | |
3524 | args[2] = buffer, args[3] = host, args[4] = service; | |
3525 | GCPRO1 (proc); | |
3526 | coding_systems = Ffind_operation_coding_system (5, args); | |
3527 | UNGCPRO; | |
3528 | } | |
67918941 RS |
3529 | } |
3530 | if (CONSP (coding_systems)) | |
70949dac | 3531 | val = XCDR (coding_systems); |
67918941 | 3532 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3533 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3534 | else |
3535 | val = Qnil; | |
3536 | } | |
e690ca94 | 3537 | p->encode_coding_system = val; |
67918941 | 3538 | } |
03f04413 | 3539 | setup_process_coding_systems (proc); |
0fa1789e | 3540 | |
e690ca94 | 3541 | p->decoding_buf = make_uninit_string (0); |
60f0fb11 | 3542 | p->decoding_carryover = 0; |
e690ca94 | 3543 | p->encoding_buf = make_uninit_string (0); |
0fa1789e | 3544 | |
e690ca94 | 3545 | p->inherit_coding_system_flag |
e6fca843 | 3546 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3547 | |
d0d6b7c5 JB |
3548 | UNGCPRO; |
3549 | return proc; | |
3550 | } | |
3551 | #endif /* HAVE_SOCKETS */ | |
3552 | ||
6b61353c KH |
3553 | \f |
3554 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
3555 | ||
3556 | #ifdef SIOCGIFCONF | |
3557 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3558 | doc: /* Return an alist of all network interfaces and their network address. | |
3559 | Each element is a cons, the car of which is a string containing the | |
3560 | interface name, and the cdr is the network address in internal | |
3561 | format; see the description of ADDRESS in `make-network-process'. */) | |
3562 | () | |
3563 | { | |
3564 | struct ifconf ifconf; | |
3565 | struct ifreq *ifreqs = NULL; | |
3566 | int ifaces = 0; | |
3567 | int buf_size, s; | |
3568 | Lisp_Object res; | |
3569 | ||
3570 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3571 | if (s < 0) | |
3572 | return Qnil; | |
3573 | ||
3574 | again: | |
3575 | ifaces += 25; | |
3576 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3577 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3578 | if (!ifreqs) | |
3579 | { | |
3580 | close (s); | |
3581 | return Qnil; | |
3582 | } | |
3583 | ||
3584 | ifconf.ifc_len = buf_size; | |
3585 | ifconf.ifc_req = ifreqs; | |
3586 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3587 | { | |
3588 | close (s); | |
3589 | return Qnil; | |
3590 | } | |
3591 | ||
3592 | if (ifconf.ifc_len == buf_size) | |
3593 | goto again; | |
3594 | ||
3595 | close (s); | |
3596 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3597 | ||
3598 | res = Qnil; | |
3599 | while (--ifaces >= 0) | |
3600 | { | |
3601 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3602 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3603 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3604 | continue; | |
3605 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3606 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3607 | res = Fcons (Fcons (build_string (namebuf), | |
3608 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3609 | sizeof (struct sockaddr))), | |
3610 | res); | |
3611 | } | |
3612 | ||
3613 | return res; | |
3614 | } | |
3615 | #endif /* SIOCGIFCONF */ | |
3616 | ||
3617 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3618 | ||
3619 | struct ifflag_def { | |
3620 | int flag_bit; | |
3621 | char *flag_sym; | |
3622 | }; | |
3623 | ||
3624 | static struct ifflag_def ifflag_table[] = { | |
3625 | #ifdef IFF_UP | |
3626 | { IFF_UP, "up" }, | |
3627 | #endif | |
3628 | #ifdef IFF_BROADCAST | |
3629 | { IFF_BROADCAST, "broadcast" }, | |
3630 | #endif | |
3631 | #ifdef IFF_DEBUG | |
3632 | { IFF_DEBUG, "debug" }, | |
3633 | #endif | |
3634 | #ifdef IFF_LOOPBACK | |
3635 | { IFF_LOOPBACK, "loopback" }, | |
3636 | #endif | |
3637 | #ifdef IFF_POINTOPOINT | |
3638 | { IFF_POINTOPOINT, "pointopoint" }, | |
3639 | #endif | |
3640 | #ifdef IFF_RUNNING | |
3641 | { IFF_RUNNING, "running" }, | |
3642 | #endif | |
3643 | #ifdef IFF_NOARP | |
3644 | { IFF_NOARP, "noarp" }, | |
3645 | #endif | |
3646 | #ifdef IFF_PROMISC | |
3647 | { IFF_PROMISC, "promisc" }, | |
3648 | #endif | |
3649 | #ifdef IFF_NOTRAILERS | |
3650 | { IFF_NOTRAILERS, "notrailers" }, | |
3651 | #endif | |
3652 | #ifdef IFF_ALLMULTI | |
3653 | { IFF_ALLMULTI, "allmulti" }, | |
3654 | #endif | |
3655 | #ifdef IFF_MASTER | |
3656 | { IFF_MASTER, "master" }, | |
3657 | #endif | |
3658 | #ifdef IFF_SLAVE | |
3659 | { IFF_SLAVE, "slave" }, | |
3660 | #endif | |
3661 | #ifdef IFF_MULTICAST | |
3662 | { IFF_MULTICAST, "multicast" }, | |
3663 | #endif | |
3664 | #ifdef IFF_PORTSEL | |
3665 | { IFF_PORTSEL, "portsel" }, | |
3666 | #endif | |
3667 | #ifdef IFF_AUTOMEDIA | |
3668 | { IFF_AUTOMEDIA, "automedia" }, | |
3669 | #endif | |
3670 | #ifdef IFF_DYNAMIC | |
3671 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3672 | #endif |
2026418c YM |
3673 | #ifdef IFF_OACTIVE |
3674 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3675 | #endif |
3676 | #ifdef IFF_SIMPLEX | |
3677 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3678 | #endif | |
3679 | #ifdef IFF_LINK0 | |
3680 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3681 | #endif | |
3682 | #ifdef IFF_LINK1 | |
3683 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3684 | #endif | |
3685 | #ifdef IFF_LINK2 | |
3686 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3687 | #endif |
3688 | { 0, 0 } | |
3689 | }; | |
3690 | ||
3691 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3692 | doc: /* Return information about network interface named IFNAME. | |
3693 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3694 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3695 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3696 | FLAGS is the current flags of the interface. */) | |
3697 | (ifname) | |
3698 | Lisp_Object ifname; | |
3699 | { | |
3700 | struct ifreq rq; | |
3701 | Lisp_Object res = Qnil; | |
3702 | Lisp_Object elt; | |
3703 | int s; | |
3704 | int any = 0; | |
3705 | ||
3706 | CHECK_STRING (ifname); | |
3707 | ||
3708 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
3709 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
3710 | ||
3711 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3712 | if (s < 0) | |
3713 | return Qnil; | |
3714 | ||
3715 | elt = Qnil; | |
3716 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) | |
3717 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) | |
3718 | { | |
3719 | int flags = rq.ifr_flags; | |
3720 | struct ifflag_def *fp; | |
3721 | int fnum; | |
3722 | ||
3723 | any++; | |
82a80058 | 3724 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3725 | { |
3726 | if (flags & fp->flag_bit) | |
3727 | { | |
3728 | elt = Fcons (intern (fp->flag_sym), elt); | |
3729 | flags -= fp->flag_bit; | |
3730 | } | |
3731 | } | |
3732 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3733 | { | |
3734 | if (flags & (1 << fnum)) | |
3735 | { | |
3736 | elt = Fcons (make_number (fnum), elt); | |
3737 | } | |
3738 | } | |
3739 | } | |
3740 | #endif | |
3741 | res = Fcons (elt, res); | |
3742 | ||
3743 | elt = Qnil; | |
3744 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) | |
3745 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) | |
3746 | { | |
3747 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3748 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3749 | int n; | |
3750 | ||
3751 | any++; | |
3752 | for (n = 0; n < 6; n++) | |
3753 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3754 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3755 | } | |
3756 | #endif | |
3757 | res = Fcons (elt, res); | |
3758 | ||
3759 | elt = Qnil; | |
2026418c | 3760 | #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3761 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3762 | { | |
3763 | any++; | |
2026418c | 3764 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3765 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3766 | #else |
3767 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3768 | #endif | |
6b61353c KH |
3769 | } |
3770 | #endif | |
3771 | res = Fcons (elt, res); | |
3772 | ||
3773 | elt = Qnil; | |
3774 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) | |
3775 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) | |
3776 | { | |
3777 | any++; | |
3778 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3779 | } | |
3780 | #endif | |
3781 | res = Fcons (elt, res); | |
3782 | ||
3783 | elt = Qnil; | |
3784 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) | |
3785 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) | |
3786 | { | |
3787 | any++; | |
3788 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3789 | } | |
3790 | #endif | |
3791 | res = Fcons (elt, res); | |
3792 | ||
3793 | close (s); | |
3794 | ||
3795 | return any ? res : Qnil; | |
3796 | } | |
3797 | #endif | |
3798 | #endif /* HAVE_SOCKETS */ | |
3799 | ||
04391069 RS |
3800 | /* Turn off input and output for process PROC. */ |
3801 | ||
6b53bb85 | 3802 | void |
d0d6b7c5 JB |
3803 | deactivate_process (proc) |
3804 | Lisp_Object proc; | |
3805 | { | |
3806 | register int inchannel, outchannel; | |
3807 | register struct Lisp_Process *p = XPROCESS (proc); | |
3808 | ||
60f0fb11 SM |
3809 | inchannel = p->infd; |
3810 | outchannel = p->outfd; | |
d0d6b7c5 | 3811 | |
6b61353c | 3812 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3813 | if (p->read_output_delay > 0) |
6b61353c KH |
3814 | { |
3815 | if (--process_output_delay_count < 0) | |
3816 | process_output_delay_count = 0; | |
60f0fb11 SM |
3817 | p->read_output_delay = 0; |
3818 | p->read_output_skip = 0; | |
6b61353c KH |
3819 | } |
3820 | #endif | |
f3d9532b | 3821 | |
a9f2c884 | 3822 | if (inchannel >= 0) |
d0d6b7c5 JB |
3823 | { |
3824 | /* Beware SIGCHLD hereabouts. */ | |
3825 | flush_pending_output (inchannel); | |
3826 | #ifdef VMS | |
3827 | { | |
3828 | VMS_PROC_STUFF *get_vms_process_pointer (), *vs; | |
3829 | sys$dassgn (outchannel); | |
c6c6865d | 3830 | vs = get_vms_process_pointer (p->pid); |
d0d6b7c5 JB |
3831 | if (vs) |
3832 | give_back_vms_process_stuff (vs); | |
3833 | } | |
3834 | #else | |
68c45bf0 | 3835 | emacs_close (inchannel); |
a9f2c884 | 3836 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3837 | emacs_close (outchannel); |
d0d6b7c5 JB |
3838 | #endif |
3839 | ||
60f0fb11 SM |
3840 | p->infd = -1; |
3841 | p->outfd = -1; | |
e690ca94 KS |
3842 | #ifdef DATAGRAM_SOCKETS |
3843 | if (DATAGRAM_CHAN_P (inchannel)) | |
3844 | { | |
3845 | xfree (datagram_address[inchannel].sa); | |
3846 | datagram_address[inchannel].sa = 0; | |
3847 | datagram_address[inchannel].len = 0; | |
3848 | } | |
3849 | #endif | |
d0d6b7c5 JB |
3850 | chan_process[inchannel] = Qnil; |
3851 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3852 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3853 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3854 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3855 | { | |
3856 | FD_CLR (inchannel, &connect_wait_mask); | |
3857 | if (--num_pending_connects < 0) | |
3858 | abort (); | |
3859 | } | |
bad49fc7 | 3860 | #endif |
7d0e672e RS |
3861 | if (inchannel == max_process_desc) |
3862 | { | |
3863 | int i; | |
3864 | /* We just closed the highest-numbered process input descriptor, | |
3865 | so recompute the highest-numbered one now. */ | |
3866 | max_process_desc = 0; | |
3867 | for (i = 0; i < MAXDESC; i++) | |
3868 | if (!NILP (chan_process[i])) | |
3869 | max_process_desc = i; | |
3870 | } | |
d0d6b7c5 JB |
3871 | } |
3872 | } | |
3873 | ||
3874 | /* Close all descriptors currently in use for communication | |
3875 | with subprocess. This is used in a newly-forked subprocess | |
3876 | to get rid of irrelevant descriptors. */ | |
3877 | ||
6b53bb85 | 3878 | void |
d0d6b7c5 JB |
3879 | close_process_descs () |
3880 | { | |
e98d950b | 3881 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
3882 | int i; |
3883 | for (i = 0; i < MAXDESC; i++) | |
3884 | { | |
3885 | Lisp_Object process; | |
3886 | process = chan_process[i]; | |
3887 | if (!NILP (process)) | |
3888 | { | |
60f0fb11 SM |
3889 | int in = XPROCESS (process)->infd; |
3890 | int out = XPROCESS (process)->outfd; | |
a9f2c884 | 3891 | if (in >= 0) |
68c45bf0 | 3892 | emacs_close (in); |
a9f2c884 | 3893 | if (out >= 0 && in != out) |
68c45bf0 | 3894 | emacs_close (out); |
d0d6b7c5 JB |
3895 | } |
3896 | } | |
e98d950b | 3897 | #endif |
d0d6b7c5 JB |
3898 | } |
3899 | \f | |
3900 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3901 | 0, 4, 0, |
fdb82f93 PJ |
3902 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3903 | It is read into the process' buffers or given to their filter functions. | |
3904 | Non-nil arg PROCESS means do not return until some output has been received | |
3905 | from PROCESS. | |
5088da42 KS |
3906 | |
3907 | Non-nil second arg SECONDS and third arg MILLISEC are number of | |
3908 | seconds and milliseconds to wait; return after that much time whether | |
3909 | or not there is input. If SECONDS is a floating point number, | |
3910 | it specifies a fractional number of seconds to wait. | |
3911 | ||
107ed38d KS |
3912 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3913 | from PROCESS, suspending reading output from other processes. | |
3914 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 3915 | Return non-nil if we received any output before the timeout expired. */) |
5088da42 KS |
3916 | (process, seconds, millisec, just_this_one) |
3917 | register Lisp_Object process, seconds, millisec, just_this_one; | |
d0d6b7c5 | 3918 | { |
5088da42 | 3919 | int secs, usecs = 0; |
d0d6b7c5 | 3920 | |
0748d150 | 3921 | if (! NILP (process)) |
b7826503 | 3922 | CHECK_PROCESS (process); |
107ed38d KS |
3923 | else |
3924 | just_this_one = Qnil; | |
0748d150 | 3925 | |
5088da42 | 3926 | if (!NILP (seconds)) |
d0d6b7c5 | 3927 | { |
5088da42 KS |
3928 | if (INTEGERP (seconds)) |
3929 | secs = XINT (seconds); | |
3930 | else if (FLOATP (seconds)) | |
3931 | { | |
3932 | double timeout = XFLOAT_DATA (seconds); | |
3933 | secs = (int) timeout; | |
3934 | usecs = (int) ((timeout - (double) secs) * 1000000); | |
3935 | } | |
3936 | else | |
3937 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 3938 | |
5088da42 KS |
3939 | if (INTEGERP (millisec)) |
3940 | { | |
3941 | int carry; | |
3942 | usecs += XINT (millisec) * 1000; | |
3943 | carry = usecs / 1000000; | |
3944 | secs += carry; | |
3945 | if ((usecs -= carry * 1000000) < 0) | |
3946 | { | |
3947 | secs--; | |
3948 | usecs += 1000000; | |
3949 | } | |
3950 | } | |
d0d6b7c5 | 3951 | |
5088da42 KS |
3952 | if (secs < 0 || (secs == 0 && usecs == 0)) |
3953 | secs = -1, usecs = 0; | |
d0d6b7c5 JB |
3954 | } |
3955 | else | |
5088da42 | 3956 | secs = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
3957 | |
3958 | return | |
5088da42 | 3959 | (wait_reading_process_output (secs, usecs, 0, 0, |
214d6069 KS |
3960 | Qnil, |
3961 | !NILP (process) ? XPROCESS (process) : NULL, | |
3962 | NILP (just_this_one) ? 0 : | |
3963 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3964 | ? Qt : Qnil); |
3965 | } | |
3966 | ||
e690ca94 KS |
3967 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3968 | ||
3969 | static int connect_counter = 0; | |
3970 | ||
3971 | static void | |
3972 | server_accept_connection (server, channel) | |
3973 | Lisp_Object server; | |
3974 | int channel; | |
3975 | { | |
3976 | Lisp_Object proc, caller, name, buffer; | |
3977 | Lisp_Object contact, host, service; | |
3978 | struct Lisp_Process *ps= XPROCESS (server); | |
3979 | struct Lisp_Process *p; | |
3980 | int s; | |
3981 | union u_sockaddr { | |
3982 | struct sockaddr sa; | |
3983 | struct sockaddr_in in; | |
e1652a86 KS |
3984 | #ifdef AF_INET6 |
3985 | struct sockaddr_in6 in6; | |
3986 | #endif | |
e690ca94 KS |
3987 | #ifdef HAVE_LOCAL_SOCKETS |
3988 | struct sockaddr_un un; | |
3989 | #endif | |
3990 | } saddr; | |
3991 | int len = sizeof saddr; | |
3992 | ||
3993 | s = accept (channel, &saddr.sa, &len); | |
3994 | ||
3995 | if (s < 0) | |
3996 | { | |
3997 | int code = errno; | |
3998 | ||
3999 | if (code == EAGAIN) | |
4000 | return; | |
4001 | #ifdef EWOULDBLOCK | |
4002 | if (code == EWOULDBLOCK) | |
4003 | return; | |
4004 | #endif | |
4005 | ||
4006 | if (!NILP (ps->log)) | |
4007 | call3 (ps->log, server, Qnil, | |
4008 | concat3 (build_string ("accept failed with code"), | |
4009 | Fnumber_to_string (make_number (code)), | |
4010 | build_string ("\n"))); | |
4011 | return; | |
4012 | } | |
4013 | ||
4014 | connect_counter++; | |
4015 | ||
4016 | /* Setup a new process to handle the connection. */ | |
4017 | ||
4018 | /* Generate a unique identification of the caller, and build contact | |
4019 | information for this process. */ | |
4020 | host = Qt; | |
4021 | service = Qnil; | |
4022 | switch (saddr.sa.sa_family) | |
4023 | { | |
4024 | case AF_INET: | |
4025 | { | |
4026 | Lisp_Object args[5]; | |
4027 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4028 | args[0] = build_string ("%d.%d.%d.%d"); | |
4029 | args[1] = make_number (*ip++); | |
4030 | args[2] = make_number (*ip++); | |
4031 | args[3] = make_number (*ip++); | |
4032 | args[4] = make_number (*ip++); | |
4033 | host = Fformat (5, args); | |
4034 | service = make_number (ntohs (saddr.in.sin_port)); | |
4035 | ||
4036 | args[0] = build_string (" <%s:%d>"); | |
4037 | args[1] = host; | |
4038 | args[2] = service; | |
4039 | caller = Fformat (3, args); | |
4040 | } | |
4041 | break; | |
4042 | ||
e1652a86 KS |
4043 | #ifdef AF_INET6 |
4044 | case AF_INET6: | |
4045 | { | |
4046 | Lisp_Object args[9]; | |
4047 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4048 | int i; | |
4049 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4050 | for (i = 0; i < 8; i++) | |
4051 | args[i+1] = make_number (ntohs(ip6[i])); | |
4052 | host = Fformat (9, args); | |
4053 | service = make_number (ntohs (saddr.in.sin_port)); | |
4054 | ||
4055 | args[0] = build_string (" <[%s]:%d>"); | |
4056 | args[1] = host; | |
4057 | args[2] = service; | |
4058 | caller = Fformat (3, args); | |
4059 | } | |
4060 | break; | |
4061 | #endif | |
4062 | ||
e690ca94 KS |
4063 | #ifdef HAVE_LOCAL_SOCKETS |
4064 | case AF_LOCAL: | |
4065 | #endif | |
4066 | default: | |
4067 | caller = Fnumber_to_string (make_number (connect_counter)); | |
4068 | caller = concat3 (build_string (" <*"), caller, build_string ("*>")); | |
4069 | break; | |
4070 | } | |
4071 | ||
4072 | /* Create a new buffer name for this process if it doesn't have a | |
4073 | filter. The new buffer name is based on the buffer name or | |
4074 | process name of the server process concatenated with the caller | |
4075 | identification. */ | |
4076 | ||
4077 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4078 | buffer = Qnil; | |
4079 | else | |
4080 | { | |
4081 | buffer = ps->buffer; | |
4082 | if (!NILP (buffer)) | |
4083 | buffer = Fbuffer_name (buffer); | |
4084 | else | |
4085 | buffer = ps->name; | |
4086 | if (!NILP (buffer)) | |
4087 | { | |
4088 | buffer = concat2 (buffer, caller); | |
4089 | buffer = Fget_buffer_create (buffer); | |
4090 | } | |
4091 | } | |
4092 | ||
4093 | /* Generate a unique name for the new server process. Combine the | |
4094 | server process name with the caller identification. */ | |
4095 | ||
4096 | name = concat2 (ps->name, caller); | |
4097 | proc = make_process (name); | |
4098 | ||
4099 | chan_process[s] = proc; | |
4100 | ||
4101 | #ifdef O_NONBLOCK | |
4102 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4103 | #else | |
4104 | #ifdef O_NDELAY | |
4105 | fcntl (s, F_SETFL, O_NDELAY); | |
4106 | #endif | |
4107 | #endif | |
4108 | ||
4109 | p = XPROCESS (proc); | |
4110 | ||
4111 | /* Build new contact information for this setup. */ | |
4112 | contact = Fcopy_sequence (ps->childp); | |
4113 | contact = Fplist_put (contact, QCserver, Qnil); | |
4114 | contact = Fplist_put (contact, QChost, host); | |
4115 | if (!NILP (service)) | |
4116 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4117 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4118 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4119 | #ifdef HAVE_GETSOCKNAME | |
4120 | len = sizeof saddr; | |
2185db04 | 4121 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4122 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4123 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4124 | #endif | |
4125 | ||
4126 | p->childp = contact; | |
faa7db08 | 4127 | p->plist = Fcopy_sequence (ps->plist); |
ac4a7584 | 4128 | |
e690ca94 KS |
4129 | p->buffer = buffer; |
4130 | p->sentinel = ps->sentinel; | |
4131 | p->filter = ps->filter; | |
4132 | p->command = Qnil; | |
6bfd98e7 | 4133 | p->pid = 0; |
60f0fb11 SM |
4134 | p->infd = s; |
4135 | p->outfd = s; | |
e690ca94 KS |
4136 | p->status = Qrun; |
4137 | ||
4138 | /* Client processes for accepted connections are not stopped initially. */ | |
4139 | if (!EQ (p->filter, Qt)) | |
4140 | { | |
4141 | FD_SET (s, &input_wait_mask); | |
4142 | FD_SET (s, &non_keyboard_wait_mask); | |
4143 | } | |
4144 | ||
4145 | if (s > max_process_desc) | |
4146 | max_process_desc = s; | |
4147 | ||
177c0ea7 | 4148 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4149 | This seems to be the proper thing to do, as the coding system |
4150 | of the new process should reflect the settings at the time the | |
4151 | server socket was opened; not the current settings. */ | |
4152 | ||
4153 | p->decode_coding_system = ps->decode_coding_system; | |
4154 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4155 | setup_process_coding_systems (proc); |
e690ca94 KS |
4156 | |
4157 | p->decoding_buf = make_uninit_string (0); | |
60f0fb11 | 4158 | p->decoding_carryover = 0; |
e690ca94 | 4159 | p->encoding_buf = make_uninit_string (0); |
e690ca94 KS |
4160 | |
4161 | p->inherit_coding_system_flag | |
60f0fb11 | 4162 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 KS |
4163 | |
4164 | if (!NILP (ps->log)) | |
4165 | call3 (ps->log, server, proc, | |
4166 | concat3 (build_string ("accept from "), | |
4167 | (STRINGP (host) ? host : build_string ("-")), | |
4168 | build_string ("\n"))); | |
4169 | ||
bed9664a | 4170 | if (!NILP (p->sentinel)) |
177c0ea7 | 4171 | exec_sentinel (proc, |
e690ca94 KS |
4172 | concat3 (build_string ("open from "), |
4173 | (STRINGP (host) ? host : build_string ("-")), | |
4174 | build_string ("\n"))); | |
4175 | } | |
4176 | ||
d0d6b7c5 JB |
4177 | /* This variable is different from waiting_for_input in keyboard.c. |
4178 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4179 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4180 | for user-input when that process-filter was called. |
4181 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4182 | lisp code is being evalled. |
4183 | This is also used in record_asynch_buffer_change. | |
4184 | For that purpose, this must be 0 | |
214d6069 | 4185 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4186 | static int waiting_for_user_input_p; |
4187 | ||
2beb96f9 KS |
4188 | static Lisp_Object |
4189 | wait_reading_process_output_unwind (data) | |
4190 | Lisp_Object data; | |
4191 | { | |
4192 | waiting_for_user_input_p = XINT (data); | |
4193 | return Qnil; | |
4194 | } | |
4195 | ||
c573ae8e | 4196 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4197 | static void |
214d6069 | 4198 | wait_reading_process_output_1 () |
c573ae8e RS |
4199 | { |
4200 | } | |
4201 | ||
e1e541bd KS |
4202 | /* Use a wrapper around select to work around a bug in gdb 5.3. |
4203 | Normally, the wrapper is optimzed away by inlining. | |
4204 | ||
4205 | If emacs is stopped inside select, the gdb backtrace doesn't | |
4206 | show the function which called select, so it is practically | |
4207 | impossible to step through wait_reading_process_output. */ | |
4208 | ||
4209 | #ifndef select | |
4210 | static INLINE int | |
4211 | select_wrapper (n, rfd, wfd, xfd, tmo) | |
4212 | int n; | |
4213 | SELECT_TYPE *rfd, *wfd, *xfd; | |
4214 | EMACS_TIME *tmo; | |
4215 | { | |
4216 | return select (n, rfd, wfd, xfd, tmo); | |
4217 | } | |
4218 | #define select select_wrapper | |
4219 | #endif | |
4220 | ||
d0d6b7c5 JB |
4221 | /* Read and dispose of subprocess output while waiting for timeout to |
4222 | elapse and/or keyboard input to be available. | |
4223 | ||
de6fd4b9 | 4224 | TIME_LIMIT is: |
d0d6b7c5 JB |
4225 | timeout in seconds, or |
4226 | zero for no limit, or | |
4227 | -1 means gobble data immediately available but don't wait for any. | |
4228 | ||
de6fd4b9 RS |
4229 | MICROSECS is: |
4230 | an additional duration to wait, measured in microseconds. | |
4231 | If this is nonzero and time_limit is 0, then the timeout | |
4232 | consists of MICROSECS only. | |
6e4f3667 | 4233 | |
de6fd4b9 | 4234 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4235 | 0 to ignore keyboard input, or |
4236 | 1 to return when input is available, or | |
84aa3ace | 4237 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4238 | the quit handler, or |
d0d6b7c5 | 4239 | |
de6fd4b9 | 4240 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4241 | output that arrives. |
d0d6b7c5 | 4242 | |
b89a415a KS |
4243 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4244 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4245 | |
b89a415a | 4246 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4247 | process. The return value is true if we read some input from |
b89a415a KS |
4248 | that process. |
4249 | ||
4250 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4251 | (suspending output from other processes). A negative value | |
4252 | means don't run any timers either. | |
4253 | ||
e0f24100 | 4254 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4255 | received input from that process before the timeout elapsed. |
e0f24100 | 4256 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4257 | |
dfcf069d | 4258 | int |
214d6069 KS |
4259 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
4260 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
4261 | int time_limit, microsecs, read_kbd, do_display; |
4262 | Lisp_Object wait_for_cell; | |
4263 | struct Lisp_Process *wait_proc; | |
4264 | int just_wait_proc; | |
d0d6b7c5 | 4265 | { |
41d03b9a | 4266 | register int channel, nfds; |
855448dc | 4267 | SELECT_TYPE Available; |
bad49fc7 | 4268 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4269 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4270 | int check_connect; |
4271 | #endif | |
4272 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4273 | int xerrno; |
4274 | Lisp_Object proc; | |
41d03b9a | 4275 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4276 | int wait_channel = -1; |
d0d6b7c5 | 4277 | int got_some_input = 0; |
2beb96f9 | 4278 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4279 | |
4280 | FD_ZERO (&Available); | |
bad49fc7 | 4281 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4282 | FD_ZERO (&Connecting); |
bad49fc7 | 4283 | #endif |
d0d6b7c5 | 4284 | |
b89a415a KS |
4285 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4286 | if (wait_proc != NULL) | |
60f0fb11 | 4287 | wait_channel = wait_proc->infd; |
84aa3ace | 4288 | |
2beb96f9 KS |
4289 | record_unwind_protect (wait_reading_process_output_unwind, |
4290 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4291 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4292 | |
4293 | /* Since we may need to wait several times, | |
4294 | compute the absolute time to return at. */ | |
4295 | if (time_limit || microsecs) | |
4296 | { | |
4297 | EMACS_GET_TIME (end_time); | |
4298 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4299 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4300 | } | |
19310311 | 4301 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4302 | /* AlainF 5-Jul-1996 |
4303 | HP-UX 10.10 seem to have problems with signals coming in | |
4304 | Causes "poll: interrupted system call" messages when Emacs is run | |
4305 | in an X window | |
75eb23f1 RS |
4306 | Turn off periodic alarms (in case they are in use), |
4307 | and then turn off any other atimers. */ | |
4308 | stop_polling (); | |
30904ab7 | 4309 | turn_on_atimers (0); |
19310311 | 4310 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
d0d6b7c5 | 4311 | |
d0d6b7c5 JB |
4312 | while (1) |
4313 | { | |
c0239a0b RS |
4314 | int timeout_reduced_for_timers = 0; |
4315 | ||
d0d6b7c5 JB |
4316 | /* If calling from keyboard input, do not quit |
4317 | since we want to return C-g as an input character. | |
4318 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4319 | if (read_kbd >= 0) |
d0d6b7c5 | 4320 | QUIT; |
6b61353c KH |
4321 | #ifdef SYNC_INPUT |
4322 | else if (interrupt_input_pending) | |
4323 | handle_async_input (); | |
4324 | #endif | |
d0d6b7c5 | 4325 | |
889255b4 | 4326 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4327 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4328 | break; |
4329 | ||
d0d6b7c5 JB |
4330 | /* Compute time from now till when time limit is up */ |
4331 | /* Exit if already run out */ | |
4332 | if (time_limit == -1) | |
4333 | { | |
4334 | /* -1 specified for timeout means | |
4335 | gobble output available now | |
4336 | but don't wait at all. */ | |
4337 | ||
4338 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4339 | } | |
4340 | else if (time_limit || microsecs) | |
4341 | { | |
4342 | EMACS_GET_TIME (timeout); | |
4343 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4344 | if (EMACS_TIME_NEG_P (timeout)) | |
4345 | break; | |
4346 | } | |
4347 | else | |
4348 | { | |
4349 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4350 | } | |
4351 | ||
f854a00b RS |
4352 | /* Normally we run timers here. |
4353 | But not if wait_for_cell; in those cases, | |
4354 | the wait is supposed to be short, | |
4355 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4356 | if (NILP (wait_for_cell) |
b89a415a | 4357 | && just_wait_proc >= 0) |
fb4c3627 | 4358 | { |
c0239a0b | 4359 | EMACS_TIME timer_delay; |
c573ae8e | 4360 | |
9baacf76 | 4361 | do |
c573ae8e | 4362 | { |
9baacf76 | 4363 | int old_timers_run = timers_run; |
c88164fe | 4364 | struct buffer *old_buffer = current_buffer; |
177c0ea7 | 4365 | |
9baacf76 | 4366 | timer_delay = timer_check (1); |
a2fab450 GM |
4367 | |
4368 | /* If a timer has run, this might have changed buffers | |
4369 | an alike. Make read_key_sequence aware of that. */ | |
4370 | if (timers_run != old_timers_run | |
c88164fe | 4371 | && old_buffer != current_buffer |
a2fab450 GM |
4372 | && waiting_for_user_input_p == -1) |
4373 | record_asynch_buffer_change (); | |
177c0ea7 | 4374 | |
9baacf76 GM |
4375 | if (timers_run != old_timers_run && do_display) |
4376 | /* We must retry, since a timer may have requeued itself | |
4377 | and that could alter the time_delay. */ | |
3007ebfb | 4378 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4379 | else |
4380 | break; | |
c573ae8e | 4381 | } |
9baacf76 | 4382 | while (!detect_input_pending ()); |
c573ae8e | 4383 | |
69645afc | 4384 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4385 | if (read_kbd != 0 |
69645afc RS |
4386 | && requeued_events_pending_p ()) |
4387 | break; | |
4388 | ||
c0239a0b | 4389 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4390 | { |
4391 | EMACS_TIME difference; | |
4392 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4393 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4394 | { |
4395 | timeout = timer_delay; | |
4396 | timeout_reduced_for_timers = 1; | |
4397 | } | |
fb4c3627 | 4398 | } |
4abca5e7 RS |
4399 | /* If time_limit is -1, we are not going to wait at all. */ |
4400 | else if (time_limit != -1) | |
c573ae8e RS |
4401 | { |
4402 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4403 | wait_reading_process_output_1 (); |
c573ae8e | 4404 | } |
fb4c3627 RS |
4405 | } |
4406 | ||
90ab1a81 JB |
4407 | /* Cause C-g and alarm signals to take immediate action, |
4408 | and cause input available signals to zero out timeout. | |
4409 | ||
4410 | It is important that we do this before checking for process | |
4411 | activity. If we get a SIGCHLD after the explicit checks for | |
4412 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4413 | if (read_kbd < 0) |
90ab1a81 JB |
4414 | set_waiting_for_input (&timeout); |
4415 | ||
6be429b1 JB |
4416 | /* If status of something has changed, and no input is |
4417 | available, notify the user of the change right away. After | |
4418 | this explicit check, we'll let the SIGCHLD handler zap | |
4419 | timeout to get our attention. */ | |
4420 | if (update_tick != process_tick && do_display) | |
4421 | { | |
bad49fc7 KS |
4422 | SELECT_TYPE Atemp; |
4423 | #ifdef NON_BLOCKING_CONNECT | |
4424 | SELECT_TYPE Ctemp; | |
4425 | #endif | |
dd2a17ab | 4426 | |
6be429b1 | 4427 | Atemp = input_wait_mask; |
e082ac9d ST |
4428 | #if 0 |
4429 | /* On Mac OS X 10.0, the SELECT system call always says input is | |
e0f712ba | 4430 | present (for reading) at stdin, even when none is. This |
aa87aafc | 4431 | causes the call to SELECT below to return 1 and |
e0f712ba | 4432 | status_notify not to be called. As a result output of |
39b1da20 | 4433 | subprocesses are incorrectly discarded. |
e082ac9d | 4434 | */ |
e0f712ba AC |
4435 | FD_CLR (0, &Atemp); |
4436 | #endif | |
bad49fc7 KS |
4437 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4438 | ||
6be429b1 | 4439 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
994d9841 NR |
4440 | if ((select (max (max (max_process_desc, max_keyboard_desc), |
4441 | max_gpm_desc) + 1, | |
177c0ea7 | 4442 | &Atemp, |
bad49fc7 | 4443 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4444 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4445 | #else |
4446 | (SELECT_TYPE *)0, | |
4447 | #endif | |
dd2a17ab | 4448 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4449 | <= 0)) |
90ab1a81 JB |
4450 | { |
4451 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4452 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4453 | clear_waiting_for_input (); |
ff6daed3 | 4454 | status_notify (NULL); |
90ab1a81 | 4455 | } |
6be429b1 JB |
4456 | } |
4457 | ||
dd2a17ab KS |
4458 | /* Don't wait for output from a non-running process. Just |
4459 | read whatever data has already been received. */ | |
6bfd98e7 | 4460 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4461 | update_status (wait_proc); |
6bfd98e7 | 4462 | if (wait_proc |
dd2a17ab KS |
4463 | && ! EQ (wait_proc->status, Qrun) |
4464 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4465 | { |
215b45e9 | 4466 | int nread, total_nread = 0; |
7ce63188 | 4467 | |
9aa2a7f4 | 4468 | clear_waiting_for_input (); |
7ce63188 RS |
4469 | XSETPROCESS (proc, wait_proc); |
4470 | ||
4471 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4472 | while (wait_proc->infd >= 0) |
215b45e9 | 4473 | { |
60f0fb11 | 4474 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4475 | |
4476 | if (nread == 0) | |
4477 | break; | |
4478 | ||
177c0ea7 | 4479 | if (0 < nread) |
215b45e9 RS |
4480 | total_nread += nread; |
4481 | #ifdef EIO | |
4482 | else if (nread == -1 && EIO == errno) | |
4483 | break; | |
e1b37c34 GM |
4484 | #endif |
4485 | #ifdef EAGAIN | |
4486 | else if (nread == -1 && EAGAIN == errno) | |
4487 | break; | |
4488 | #endif | |
4489 | #ifdef EWOULDBLOCK | |
4490 | else if (nread == -1 && EWOULDBLOCK == errno) | |
4491 | break; | |
215b45e9 RS |
4492 | #endif |
4493 | } | |
7ce63188 | 4494 | if (total_nread > 0 && do_display) |
3007ebfb | 4495 | redisplay_preserve_echo_area (10); |
7ce63188 | 4496 | |
9aa2a7f4 JB |
4497 | break; |
4498 | } | |
6be429b1 | 4499 | |
d0d6b7c5 JB |
4500 | /* Wait till there is something to do */ |
4501 | ||
b89a415a | 4502 | if (wait_proc && just_wait_proc) |
107ed38d | 4503 | { |
60f0fb11 | 4504 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4505 | break; |
60f0fb11 | 4506 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 KS |
4507 | check_delay = 0; |
4508 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4509 | } |
4510 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4511 | { |
4512 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4513 | check_delay = 0; |
4514 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4515 | } |
a69281ff | 4516 | else |
dd2a17ab | 4517 | { |
b89a415a | 4518 | if (! read_kbd) |
dd2a17ab KS |
4519 | Available = non_keyboard_wait_mask; |
4520 | else | |
4521 | Available = input_wait_mask; | |
bad49fc7 | 4522 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
6b61353c | 4523 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4524 | } |
d0d6b7c5 | 4525 | |
ff11dfa1 | 4526 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4527 | redisplay now, before we start to wait. There is a race |
4528 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4529 | and indicates that a frame is trashed, the select may block |
4530 | displaying a trashed screen. */ | |
5164ee8e | 4531 | if (frame_garbaged && do_display) |
7286affd RS |
4532 | { |
4533 | clear_waiting_for_input (); | |
3007ebfb | 4534 | redisplay_preserve_echo_area (11); |
b89a415a | 4535 | if (read_kbd < 0) |
7efe788e | 4536 | set_waiting_for_input (&timeout); |
7286affd | 4537 | } |
ffd56f97 | 4538 | |
dd2a17ab | 4539 | no_avail = 0; |
b89a415a | 4540 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4541 | { |
4542 | nfds = 0; | |
dd2a17ab | 4543 | no_avail = 1; |
0a65b032 RS |
4544 | } |
4545 | else | |
dd2a17ab | 4546 | { |
bad49fc7 | 4547 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4548 | if (check_connect) |
4549 | Connecting = connect_wait_mask; | |
bad49fc7 | 4550 | #endif |
6b61353c KH |
4551 | |
4552 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4553 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4554 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4555 | read_output_delay, and we are not reading output for a |
4556 | specific wait_channel. It is not executed if | |
4557 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4558 | if (process_output_skip && check_delay > 0) |
4559 | { | |
4560 | int usecs = EMACS_USECS (timeout); | |
4561 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4562 | usecs = READ_OUTPUT_DELAY_MAX; | |
4563 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4564 | { | |
4565 | proc = chan_process[channel]; | |
4566 | if (NILP (proc)) | |
4567 | continue; | |
db853b7a | 4568 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4569 | processes with non-zero read_output_skip. */ |
4570 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4571 | { |
4572 | check_delay--; | |
60f0fb11 | 4573 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4574 | continue; |
4575 | FD_CLR (channel, &Available); | |
60f0fb11 SM |
4576 | XPROCESS (proc)->read_output_skip = 0; |
4577 | if (XPROCESS (proc)->read_output_delay < usecs) | |
4578 | usecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4579 | } |
4580 | } | |
4581 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4582 | process_output_skip = 0; | |
4583 | } | |
4584 | #endif | |
4585 | ||
994d9841 NR |
4586 | nfds = select (max (max (max_process_desc, max_keyboard_desc), |
4587 | max_gpm_desc) + 1, | |
177c0ea7 | 4588 | &Available, |
bad49fc7 | 4589 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4590 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4591 | #else |
4592 | (SELECT_TYPE *)0, | |
4593 | #endif | |
dd2a17ab KS |
4594 | (SELECT_TYPE *)0, &timeout); |
4595 | } | |
6720a7fb | 4596 | |
d0d6b7c5 JB |
4597 | xerrno = errno; |
4598 | ||
4599 | /* Make C-g and alarm signals set flags again */ | |
4600 | clear_waiting_for_input (); | |
4601 | ||
4602 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4603 | do_pending_window_change (0); |
d0d6b7c5 | 4604 | |
c0239a0b RS |
4605 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4606 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4607 | break; |
4608 | if (nfds < 0) | |
4609 | { | |
4610 | if (xerrno == EINTR) | |
dd2a17ab | 4611 | no_avail = 1; |
b0310da4 JB |
4612 | #ifdef ultrix |
4613 | /* Ultrix select seems to return ENOMEM when it is | |
4614 | interrupted. Treat it just like EINTR. Bleah. Note | |
4615 | that we want to test for the "ultrix" CPP symbol, not | |
4616 | "__ultrix__"; the latter is only defined under GCC, but | |
4617 | not by DEC's bundled CC. -JimB */ | |
8058415c | 4618 | else if (xerrno == ENOMEM) |
dd2a17ab | 4619 | no_avail = 1; |
d0d6b7c5 JB |
4620 | #endif |
4621 | else if (xerrno == EBADF) | |
4622 | { | |
4623 | #ifdef AIX | |
4624 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4625 | the child's closure of the pts gives the parent a SIGHUP, and | |
4626 | the ptc file descriptor is automatically closed, | |
4627 | yielding EBADF here or at select() call above. | |
4628 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4629 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4630 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4631 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4632 | #else |
4633 | abort (); | |
4634 | #endif | |
4635 | } | |
4636 | else | |
68c45bf0 | 4637 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4638 | } |
dd2a17ab KS |
4639 | |
4640 | if (no_avail) | |
4641 | { | |
4642 | FD_ZERO (&Available); | |
bad49fc7 | 4643 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4644 | } |
4645 | ||
26ec91de | 4646 | #if defined(sun) && !defined(USG5_4) |
dd2a17ab KS |
4647 | if (nfds > 0 && keyboard_bit_set (&Available) |
4648 | && interrupt_input) | |
e0109153 JB |
4649 | /* System sometimes fails to deliver SIGIO. |
4650 | ||
4651 | David J. Mackenzie says that Emacs doesn't compile under | |
4652 | Solaris if this code is enabled, thus the USG5_4 in the CPP | |
4653 | conditional. "I haven't noticed any ill effects so far. | |
4654 | If you find a Solaris expert somewhere, they might know | |
4655 | better." */ | |
d0d6b7c5 JB |
4656 | kill (getpid (), SIGIO); |
4657 | #endif | |
4658 | ||
5d5beb62 RS |
4659 | #if 0 /* When polling is used, interrupt_input is 0, |
4660 | so get_input_pending should read the input. | |
4661 | So this should not be needed. */ | |
4662 | /* If we are using polling for input, | |
4663 | and we see input available, make it get read now. | |
4664 | Otherwise it might not actually get read for a second. | |
214d6069 | 4665 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4666 | it might never get read at all if we don't spend much time |
214d6069 | 4667 | outside of wait_reading_process_output. */ |
b89a415a | 4668 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4669 | && keyboard_bit_set (&Available) |
4670 | && input_polling_used ()) | |
4671 | kill (getpid (), SIGALRM); | |
4672 | #endif | |
4673 | ||
d0d6b7c5 JB |
4674 | /* Check for keyboard input */ |
4675 | /* If there is any, return immediately | |
4676 | to give it higher priority than subprocesses */ | |
4677 | ||
b89a415a | 4678 | if (read_kbd != 0) |
6ed6233b | 4679 | { |
a2fab450 | 4680 | int old_timers_run = timers_run; |
c88164fe | 4681 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4682 | Lisp_Object old_window = selected_window; |
a2fab450 | 4683 | int leave = 0; |
177c0ea7 | 4684 | |
5d6c2aa3 | 4685 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4686 | { |
4687 | swallow_events (do_display); | |
4688 | if (detect_input_pending_run_timers (do_display)) | |
4689 | leave = 1; | |
4690 | } | |
6ed6233b | 4691 | |
a2fab450 GM |
4692 | /* If a timer has run, this might have changed buffers |
4693 | an alike. Make read_key_sequence aware of that. */ | |
4694 | if (timers_run != old_timers_run | |
c88164fe | 4695 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4696 | && (old_buffer != current_buffer |
4697 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4698 | record_asynch_buffer_change (); |
4699 | ||
4700 | if (leave) | |
4701 | break; | |
177c0ea7 JB |
4702 | } |
4703 | ||
69645afc | 4704 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4705 | if (read_kbd != 0 |
69645afc RS |
4706 | && requeued_events_pending_p ()) |
4707 | break; | |
4708 | ||
77e1b3d4 RS |
4709 | /* If we are not checking for keyboard input now, |
4710 | do process events (but don't run any timers). | |
4711 | This is so that X events will be processed. | |
0c9960e9 | 4712 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4713 | That would causes delays in pasting selections, for example. |
4714 | ||
4715 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4716 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4717 | { |
4718 | swallow_events (do_display); | |
0c9960e9 | 4719 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4720 | if (detect_input_pending ()) |
4721 | break; | |
5d5beb62 | 4722 | #endif |
0c9960e9 | 4723 | } |
f854a00b | 4724 | |
84aa3ace | 4725 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4726 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4727 | break; |
4728 | ||
4746118a | 4729 | #ifdef SIGIO |
5d5beb62 | 4730 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4731 | go read it. This can happen with X on BSD after logging out. |
4732 | In that case, there really is no input and no SIGIO, | |
4733 | but select says there is input. */ | |
4734 | ||
b89a415a | 4735 | if (read_kbd && interrupt_input |
2601f59e | 4736 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4737 | kill (getpid (), SIGIO); |
4746118a | 4738 | #endif |
d0d6b7c5 | 4739 | |
d0d6b7c5 JB |
4740 | if (! wait_proc) |
4741 | got_some_input |= nfds > 0; | |
4742 | ||
32676c08 JB |
4743 | /* If checking input just got us a size-change event from X, |
4744 | obey it now if we should. */ | |
b89a415a | 4745 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4746 | do_pending_window_change (0); |
32676c08 | 4747 | |
a9f2c884 | 4748 | /* Check for data from a process. */ |
dd2a17ab KS |
4749 | if (no_avail || nfds == 0) |
4750 | continue; | |
4751 | ||
a9f2c884 RS |
4752 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4753 | but this is safer in the short run. */ | |
a69281ff | 4754 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4755 | { |
a69281ff RS |
4756 | if (FD_ISSET (channel, &Available) |
4757 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4758 | { |
4759 | int nread; | |
4760 | ||
4761 | /* If waiting for this channel, arrange to return as | |
4762 | soon as no more input to be processed. No more | |
4763 | waiting. */ | |
4764 | if (wait_channel == channel) | |
4765 | { | |
a9f2c884 | 4766 | wait_channel = -1; |
d0d6b7c5 JB |
4767 | time_limit = -1; |
4768 | got_some_input = 1; | |
4769 | } | |
4770 | proc = chan_process[channel]; | |
4771 | if (NILP (proc)) | |
4772 | continue; | |
4773 | ||
e690ca94 KS |
4774 | /* If this is a server stream socket, accept connection. */ |
4775 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4776 | { | |
4777 | server_accept_connection (proc, channel); | |
4778 | continue; | |
4779 | } | |
4780 | ||
d0d6b7c5 JB |
4781 | /* Read data from the process, starting with our |
4782 | buffered-ahead character if we have one. */ | |
4783 | ||
4784 | nread = read_process_output (proc, channel); | |
4785 | if (nread > 0) | |
4786 | { | |
4787 | /* Since read_process_output can run a filter, | |
4788 | which can call accept-process-output, | |
4789 | don't try to read from any other processes | |
4790 | before doing the select again. */ | |
4791 | FD_ZERO (&Available); | |
4792 | ||
4793 | if (do_display) | |
3007ebfb | 4794 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4795 | } |
4796 | #ifdef EWOULDBLOCK | |
4797 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4798 | ; | |
0b75e9a4 | 4799 | #endif |
89d7280d RS |
4800 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4801 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4802 | #ifdef O_NONBLOCK |
4803 | else if (nread == -1 && errno == EAGAIN) | |
4804 | ; | |
4805 | #else | |
4806 | #ifdef O_NDELAY | |
4807 | else if (nread == -1 && errno == EAGAIN) | |
4808 | ; | |
4809 | /* Note that we cannot distinguish between no input | |
4810 | available now and a closed pipe. | |
4811 | With luck, a closed pipe will be accompanied by | |
4812 | subprocess termination and SIGCHLD. */ | |
4813 | else if (nread == 0 && !NETCONN_P (proc)) | |
4814 | ; | |
4740825c KS |
4815 | #endif /* O_NDELAY */ |
4816 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4817 | #ifdef HAVE_PTYS |
4818 | /* On some OSs with ptys, when the process on one end of | |
4819 | a pty exits, the other end gets an error reading with | |
4820 | errno = EIO instead of getting an EOF (0 bytes read). | |
4821 | Therefore, if we get an error reading and errno = | |
4822 | EIO, just continue, because the child process has | |
4823 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4824 | get a SIGCHLD). |
4825 | ||
4826 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4827 | got lost. So raise the signal again just in case. |
5651af6d | 4828 | It can't hurt. */ |
d0d6b7c5 | 4829 | else if (nread == -1 && errno == EIO) |
4740825c KS |
4830 | { |
4831 | /* Clear the descriptor now, so we only raise the signal once. */ | |
4832 | FD_CLR (channel, &input_wait_mask); | |
4833 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4834 | ||
4835 | kill (getpid (), SIGCHLD); | |
4836 | } | |
4837 | #endif /* HAVE_PTYS */ | |
ffd56f97 JB |
4838 | /* If we can detect process termination, don't consider the process |
4839 | gone just because its pipe is closed. */ | |
d0d6b7c5 JB |
4840 | #ifdef SIGCHLD |
4841 | else if (nread == 0 && !NETCONN_P (proc)) | |
4842 | ; | |
4843 | #endif | |
4844 | else | |
4845 | { | |
4846 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4847 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4848 | deactivate_process (proc); |
6bfd98e7 | 4849 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 JB |
4850 | update_status (XPROCESS (proc)); |
4851 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4852 | XPROCESS (proc)->status | |
4853 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4854 | } | |
4855 | } | |
177c0ea7 | 4856 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
4857 | if (check_connect && FD_ISSET (channel, &Connecting) |
4858 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
4859 | { |
4860 | struct Lisp_Process *p; | |
dd2a17ab KS |
4861 | |
4862 | FD_CLR (channel, &connect_wait_mask); | |
4863 | if (--num_pending_connects < 0) | |
4864 | abort (); | |
4865 | ||
4866 | proc = chan_process[channel]; | |
4867 | if (NILP (proc)) | |
4868 | continue; | |
4869 | ||
4870 | p = XPROCESS (proc); | |
4871 | ||
4872 | #ifdef GNU_LINUX | |
4873 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
4874 | So only use it on systems where it is known to work. */ | |
4875 | { | |
e690ca94 | 4876 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
4877 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
4878 | xerrno = errno; | |
4879 | } | |
4880 | #else | |
44c887be PJ |
4881 | { |
4882 | struct sockaddr pname; | |
4883 | int pnamelen = sizeof(pname); | |
4884 | ||
4885 | /* If connection failed, getpeername will fail. */ | |
4886 | xerrno = 0; | |
4887 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
4888 | { | |
4889 | /* Obtain connect failure code through error slippage. */ | |
4890 | char dummy; | |
dd2a17ab | 4891 | xerrno = errno; |
44c887be PJ |
4892 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
4893 | xerrno = errno; | |
4894 | } | |
4895 | } | |
dd2a17ab KS |
4896 | #endif |
4897 | if (xerrno) | |
4898 | { | |
60f0fb11 | 4899 | p->tick = ++process_tick; |
dd2a17ab KS |
4900 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); |
4901 | deactivate_process (proc); | |
4902 | } | |
4903 | else | |
4904 | { | |
4905 | p->status = Qrun; | |
4906 | /* Execute the sentinel here. If we had relied on | |
4907 | status_notify to do it later, it will read input | |
4908 | from the process before calling the sentinel. */ | |
4909 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4910 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 4911 | { |
60f0fb11 SM |
4912 | FD_SET (p->infd, &input_wait_mask); |
4913 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
4914 | } |
4915 | } | |
4916 | } | |
4917 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4918 | } /* end for each file descriptor */ |
4919 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4920 | |
2beb96f9 | 4921 | unbind_to (count, Qnil); |
d430ee71 | 4922 | |
ffd56f97 JB |
4923 | /* If calling from keyboard input, do not quit |
4924 | since we want to return C-g as an input character. | |
4925 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4926 | if (read_kbd >= 0) |
ffd56f97 JB |
4927 | { |
4928 | /* Prevent input_pending from remaining set if we quit. */ | |
4929 | clear_input_pending (); | |
4930 | QUIT; | |
4931 | } | |
19310311 | 4932 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4933 | /* AlainF 5-Jul-1996 |
4934 | HP-UX 10.10 seems to have problems with signals coming in | |
4935 | Causes "poll: interrupted system call" messages when Emacs is run | |
4936 | in an X window | |
4937 | Turn periodic alarms back on */ | |
5d5beb62 | 4938 | start_polling (); |
19310311 | 4939 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
efa2a55c | 4940 | |
d0d6b7c5 JB |
4941 | return got_some_input; |
4942 | } | |
4943 | \f | |
3b9a3dfa RS |
4944 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4945 | ||
4946 | static Lisp_Object | |
4947 | read_process_output_call (fun_and_args) | |
4948 | Lisp_Object fun_and_args; | |
4949 | { | |
70949dac | 4950 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4951 | } |
4952 | ||
4953 | static Lisp_Object | |
4954 | read_process_output_error_handler (error) | |
4955 | Lisp_Object error; | |
4956 | { | |
4957 | cmd_error_internal (error, "error in process filter: "); | |
4958 | Vinhibit_quit = Qt; | |
4959 | update_echo_area (); | |
833ba342 | 4960 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4961 | return Qt; |
3b9a3dfa RS |
4962 | } |
4963 | ||
d0d6b7c5 JB |
4964 | /* Read pending output from the process channel, |
4965 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 4966 | Yield number of decoded characters read. |
d0d6b7c5 | 4967 | |
116c423c | 4968 | This function reads at most 4096 characters. |
d0d6b7c5 | 4969 | If you want to read all available subprocess output, |
0fa1789e KH |
4970 | you must call it repeatedly until it returns zero. |
4971 | ||
4972 | The characters read are decoded according to PROC's coding-system | |
4973 | for decoding. */ | |
d0d6b7c5 | 4974 | |
ff6daed3 | 4975 | static int |
d0d6b7c5 JB |
4976 | read_process_output (proc, channel) |
4977 | Lisp_Object proc; | |
4978 | register int channel; | |
4979 | { | |
8f924df7 | 4980 | register int nbytes; |
d0d6b7c5 | 4981 | char *chars; |
d0d6b7c5 JB |
4982 | register Lisp_Object outstream; |
4983 | register struct buffer *old = current_buffer; | |
4984 | register struct Lisp_Process *p = XPROCESS (proc); | |
4985 | register int opoint; | |
c7580538 | 4986 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 4987 | int carryover = p->decoding_carryover; |
116c423c | 4988 | int readmax = 4096; |
d0d6b7c5 JB |
4989 | |
4990 | #ifdef VMS | |
4991 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); | |
4992 | ||
4993 | vs = get_vms_process_pointer (p->pid); | |
4994 | if (vs) | |
4995 | { | |
4996 | if (!vs->iosb[0]) | |
a319f7c1 | 4997 | return (0); /* Really weird if it does this */ |
d0d6b7c5 JB |
4998 | if (!(vs->iosb[0] & 1)) |
4999 | return -1; /* I/O error */ | |
5000 | } | |
5001 | else | |
5002 | error ("Could not get VMS process pointer"); | |
5003 | chars = vs->inputBuffer; | |
1d2fc612 RS |
5004 | nbytes = clean_vms_buffer (chars, vs->iosb[1]); |
5005 | if (nbytes <= 0) | |
d0d6b7c5 JB |
5006 | { |
5007 | start_vms_process_read (vs); /* Crank up the next read on the process */ | |
5008 | return 1; /* Nothing worth printing, say we got 1 */ | |
5009 | } | |
e7fbaa65 | 5010 | if (carryover > 0) |
0fa1789e | 5011 | { |
e7fbaa65 KH |
5012 | /* The data carried over in the previous decoding (which are at |
5013 | the tail of decoding buffer) should be prepended to the new | |
5014 | data read to decode all together. */ | |
ed7a4b2d | 5015 | chars = (char *) alloca (nbytes + carryover); |
d5db4077 | 5016 | bcopy (SDATA (p->decoding_buf), buf, carryover); |
ed7a4b2d | 5017 | bcopy (vs->inputBuffer, chars + carryover, nbytes); |
0fa1789e | 5018 | } |
d0d6b7c5 | 5019 | #else /* not VMS */ |
e690ca94 | 5020 | |
e690ca94 | 5021 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
5022 | if (carryover) |
5023 | /* See the comment above. */ | |
d5db4077 | 5024 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 5025 | |
e690ca94 KS |
5026 | #ifdef DATAGRAM_SOCKETS |
5027 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5028 | if (DATAGRAM_CHAN_P (channel)) | |
5029 | { | |
5030 | int len = datagram_address[channel].len; | |
39b1da20 | 5031 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5032 | 0, datagram_address[channel].sa, &len); |
5033 | } | |
5034 | else | |
5035 | #endif | |
d0d6b7c5 | 5036 | if (proc_buffered_char[channel] < 0) |
6b61353c | 5037 | { |
39b1da20 | 5038 | nbytes = emacs_read (channel, chars + carryover, readmax); |
6b61353c | 5039 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5040 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5041 | { |
60f0fb11 | 5042 | int delay = p->read_output_delay; |
6b61353c KH |
5043 | if (nbytes < 256) |
5044 | { | |
5045 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5046 | { | |
5047 | if (delay == 0) | |
5048 | process_output_delay_count++; | |
5049 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5050 | } | |
5051 | } | |
39b1da20 | 5052 | else if (delay > 0 && (nbytes == readmax)) |
6b61353c KH |
5053 | { |
5054 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5055 | if (delay == 0) | |
5056 | process_output_delay_count--; | |
5057 | } | |
60f0fb11 | 5058 | p->read_output_delay = delay; |
6b61353c KH |
5059 | if (delay) |
5060 | { | |
60f0fb11 | 5061 | p->read_output_skip = 1; |
6b61353c KH |
5062 | process_output_skip = 1; |
5063 | } | |
5064 | } | |
5065 | #endif | |
5066 | } | |
d0d6b7c5 JB |
5067 | else |
5068 | { | |
ed7a4b2d | 5069 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 5070 | proc_buffered_char[channel] = -1; |
39b1da20 | 5071 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
5072 | if (nbytes < 0) |
5073 | nbytes = 1; | |
d0d6b7c5 | 5074 | else |
1d2fc612 | 5075 | nbytes = nbytes + 1; |
d0d6b7c5 JB |
5076 | } |
5077 | #endif /* not VMS */ | |
5078 | ||
60f0fb11 | 5079 | p->decoding_carryover = 0; |
ca65341e | 5080 | |
ed7a4b2d | 5081 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5082 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5083 | if (nbytes <= 0) |
5084 | { | |
5085 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5086 | return nbytes; | |
5087 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5088 | } | |
d0d6b7c5 | 5089 | |
1d2fc612 | 5090 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5091 | nbytes += carryover; |
0fa1789e | 5092 | |
1d2fc612 | 5093 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
5094 | outstream = p->filter; |
5095 | if (!NILP (outstream)) | |
5096 | { | |
177c0ea7 | 5097 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
5098 | hitting ^G when a filter happens to be running won't screw |
5099 | it up. */ | |
aed13378 | 5100 | int count = SPECPDL_INDEX (); |
30c78175 | 5101 | Lisp_Object odeactivate; |
dfc21838 | 5102 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 5103 | Lisp_Object text; |
4da2f5be | 5104 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5105 | int waiting = waiting_for_user_input_p; |
30c78175 | 5106 | |
dfc21838 RS |
5107 | /* No need to gcpro these, because all we do with them later |
5108 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 5109 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
5110 | XSETBUFFER (obuffer, current_buffer); |
5111 | okeymap = current_buffer->keymap; | |
30c78175 | 5112 | |
d0d6b7c5 | 5113 | specbind (Qinhibit_quit, Qt); |
6545aada | 5114 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5115 | |
4da2f5be RS |
5116 | /* In case we get recursively called, |
5117 | and we already saved the match data nonrecursively, | |
5118 | save the same match data in safely recursive fashion. */ | |
5119 | if (outer_running_asynch_code) | |
5120 | { | |
5121 | Lisp_Object tem; | |
5122 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5123 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5124 | restore_search_regs (); | |
5125 | record_unwind_save_match_data (); | |
5126 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5127 | } |
5128 | ||
5129 | /* For speed, if a search happens within this code, | |
5130 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5131 | running_asynch_code = 1; |
4da2f5be | 5132 | |
5bbf78c1 KH |
5133 | decode_coding_c_string (coding, chars, nbytes, Qt); |
5134 | text = coding->dst_object; | |
5bbf78c1 | 5135 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5136 | /* A new coding system might be found. */ |
5bbf78c1 | 5137 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5138 | { |
5bbf78c1 | 5139 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d KH |
5140 | |
5141 | /* Don't call setup_coding_system for | |
5142 | proc_decode_coding_system[channel] here. It is done in | |
5143 | detect_coding called via decode_coding above. */ | |
5144 | ||
5145 | /* If a coding system for encoding is not yet decided, we set | |
5146 | it as the same as coding-system for decoding. | |
5147 | ||
5148 | But, before doing that we must check if | |
5149 | proc_encode_coding_system[p->outfd] surely points to a | |
5150 | valid memory because p->outfd will be changed once EOF is | |
5151 | sent to the process. */ | |
5152 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5153 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5154 | { |
76d812bb KH |
5155 | p->encode_coding_system |
5156 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5157 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5158 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5159 | } |
5160 | } | |
51c6067d | 5161 | |
dd8c7a53 KH |
5162 | if (coding->carryover_bytes > 0) |
5163 | { | |
04961398 KH |
5164 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5165 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
8f924df7 | 5166 | bcopy (coding->carryover, SDATA (p->decoding_buf), |
dd8c7a53 | 5167 | coding->carryover_bytes); |
8c406a9b | 5168 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5169 | } |
03f04413 | 5170 | /* Adjust the multibyteness of TEXT to that of the filter. */ |
e6fca843 | 5171 | if (!p->filter_multibyte != !STRING_MULTIBYTE (text)) |
03f04413 KH |
5172 | text = (STRING_MULTIBYTE (text) |
5173 | ? Fstring_as_unibyte (text) | |
5174 | : Fstring_to_multibyte (text)); | |
e430e5ba | 5175 | if (SBYTES (text) > 0) |
dd97db06 KH |
5176 | internal_condition_case_1 (read_process_output_call, |
5177 | Fcons (outstream, | |
5178 | Fcons (proc, Fcons (text, Qnil))), | |
5179 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5180 | read_process_output_error_handler); | |
4da2f5be RS |
5181 | |
5182 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5183 | restore_search_regs (); |
4da2f5be | 5184 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5185 | |
592ce97f | 5186 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5187 | Vdeactivate_mark = odeactivate; |
5188 | ||
bbce7d72 RS |
5189 | /* Restore waiting_for_user_input_p as it was |
5190 | when we were called, in case the filter clobbered it. */ | |
5191 | waiting_for_user_input_p = waiting; | |
5192 | ||
7973cfa8 RS |
5193 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5194 | because we might have changed minor modes or other things | |
5195 | that affect key bindings. */ | |
dfc21838 RS |
5196 | if (! EQ (Fcurrent_buffer (), obuffer) |
5197 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5198 | #endif |
927e08be RS |
5199 | /* But do it only if the caller is actually going to read events. |
5200 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5201 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5202 | if (waiting_for_user_input_p == -1) |
5203 | record_asynch_buffer_change (); | |
d72534ba | 5204 | |
d0d6b7c5 JB |
5205 | #ifdef VMS |
5206 | start_vms_process_read (vs); | |
5207 | #endif | |
2ea6d561 | 5208 | unbind_to (count, Qnil); |
e430e5ba | 5209 | return nbytes; |
d0d6b7c5 JB |
5210 | } |
5211 | ||
5212 | /* If no filter, write into buffer if it isn't dead. */ | |
5213 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
5214 | { | |
b0310da4 | 5215 | Lisp_Object old_read_only; |
12ca5cdf | 5216 | int old_begv, old_zv; |
d8a2934e | 5217 | int old_begv_byte, old_zv_byte; |
30c78175 | 5218 | Lisp_Object odeactivate; |
d8a2934e RS |
5219 | int before, before_byte; |
5220 | int opoint_byte; | |
ed7a4b2d | 5221 | Lisp_Object text; |
926b7e5e | 5222 | struct buffer *b; |
30c78175 RS |
5223 | |
5224 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 JB |
5225 | |
5226 | Fset_buffer (p->buffer); | |
6ec8bbd2 | 5227 | opoint = PT; |
d8a2934e | 5228 | opoint_byte = PT_BYTE; |
b0310da4 | 5229 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
5230 | old_begv = BEGV; |
5231 | old_zv = ZV; | |
d8a2934e RS |
5232 | old_begv_byte = BEGV_BYTE; |
5233 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
5234 | |
5235 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
5236 | |
5237 | /* Insert new output into buffer | |
5238 | at the current end-of-output marker, | |
5239 | thus preserving logical ordering of input and output. */ | |
5240 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5241 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5242 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5243 | ZV_BYTE)); | |
d0d6b7c5 | 5244 | else |
d8a2934e | 5245 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5246 | before = PT; |
d8a2934e | 5247 | before_byte = PT_BYTE; |
b0310da4 JB |
5248 | |
5249 | /* If the output marker is outside of the visible region, save | |
5250 | the restriction and widen. */ | |
6ec8bbd2 | 5251 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5252 | Fwiden (); |
5253 | ||
5bbf78c1 KH |
5254 | decode_coding_c_string (coding, chars, nbytes, Qt); |
5255 | text = coding->dst_object; | |
5256 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5257 | /* A new coding system might be found. See the comment in the |
5258 | similar code in the previous `if' block. */ | |
5bbf78c1 | 5259 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5260 | { |
5bbf78c1 | 5261 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d | 5262 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5263 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5264 | { |
76d812bb KH |
5265 | p->encode_coding_system |
5266 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5267 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5268 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5269 | } |
5270 | } | |
dd8c7a53 KH |
5271 | if (coding->carryover_bytes > 0) |
5272 | { | |
04961398 KH |
5273 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5274 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
8f924df7 | 5275 | bcopy (coding->carryover, SDATA (p->decoding_buf), |
dd8c7a53 | 5276 | coding->carryover_bytes); |
8c406a9b | 5277 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5278 | } |
d69864bf KH |
5279 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5280 | if (NILP (current_buffer->enable_multibyte_characters) | |
5281 | != ! STRING_MULTIBYTE (text)) | |
5282 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5283 | ? Fstring_as_unibyte (text) |
03f04413 | 5284 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5285 | /* Insert before markers in case we are inserting where |
5286 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5287 | insert_from_string_before_markers (text, 0, 0, |
5288 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5289 | |
926b7e5e GM |
5290 | /* Make sure the process marker's position is valid when the |
5291 | process buffer is changed in the signal_after_change above. | |
5292 | W3 is known to do that. */ | |
5293 | if (BUFFERP (p->buffer) | |
5294 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5295 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5296 | else | |
5297 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5298 | |
d0d6b7c5 JB |
5299 | update_mode_lines++; |
5300 | ||
12ca5cdf RS |
5301 | /* Make sure opoint and the old restrictions |
5302 | float ahead of any new text just as point would. */ | |
5303 | if (opoint >= before) | |
d8a2934e RS |
5304 | { |
5305 | opoint += PT - before; | |
5306 | opoint_byte += PT_BYTE - before_byte; | |
5307 | } | |
12ca5cdf | 5308 | if (old_begv > before) |
d8a2934e RS |
5309 | { |
5310 | old_begv += PT - before; | |
5311 | old_begv_byte += PT_BYTE - before_byte; | |
5312 | } | |
12ca5cdf | 5313 | if (old_zv >= before) |
d8a2934e RS |
5314 | { |
5315 | old_zv += PT - before; | |
5316 | old_zv_byte += PT_BYTE - before_byte; | |
5317 | } | |
12ca5cdf | 5318 | |
b0310da4 | 5319 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5320 | if (old_begv != BEGV || old_zv != ZV) |
5321 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5322 | |
592ce97f | 5323 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5324 | Vdeactivate_mark = odeactivate; |
5325 | ||
b0310da4 | 5326 | current_buffer->read_only = old_read_only; |
d8a2934e | 5327 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 JB |
5328 | set_buffer_internal (old); |
5329 | } | |
5330 | #ifdef VMS | |
5331 | start_vms_process_read (vs); | |
5332 | #endif | |
1d2fc612 | 5333 | return nbytes; |
d0d6b7c5 JB |
5334 | } |
5335 | ||
5336 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
5337 | 0, 0, 0, | |
f3d9532b | 5338 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
fdb82f93 PJ |
5339 | This is intended for use by asynchronous process output filters and sentinels. */) |
5340 | () | |
d0d6b7c5 | 5341 | { |
8b4d685f | 5342 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
5343 | } |
5344 | \f | |
5345 | /* Sending data to subprocess */ | |
5346 | ||
5347 | jmp_buf send_process_frame; | |
0daad115 | 5348 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5349 | |
5350 | SIGTYPE | |
5351 | send_process_trap () | |
5352 | { | |
333f1b6f | 5353 | SIGNAL_THREAD_CHECK (SIGPIPE); |
d0d6b7c5 JB |
5354 | #ifdef BSD4_1 |
5355 | sigrelse (SIGPIPE); | |
5356 | sigrelse (SIGALRM); | |
5357 | #endif /* BSD4_1 */ | |
c8f44005 | 5358 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5359 | longjmp (send_process_frame, 1); |
5360 | } | |
5361 | ||
4556b700 RS |
5362 | /* Send some data to process PROC. |
5363 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5364 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5365 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5366 | |
a92e4183 KH |
5367 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5368 | for encoding before it is sent. | |
1fb0098c GM |
5369 | |
5370 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5371 | |
ff6daed3 | 5372 | static void |
4556b700 | 5373 | send_process (proc, buf, len, object) |
ecd1f654 | 5374 | volatile Lisp_Object proc; |
0daad115 GM |
5375 | unsigned char *volatile buf; |
5376 | volatile int len; | |
5377 | volatile Lisp_Object object; | |
d0d6b7c5 | 5378 | { |
ecd1f654 | 5379 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5380 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5381 | int rv; |
0fa1789e | 5382 | struct coding_system *coding; |
6044e593 | 5383 | struct gcpro gcpro1; |
41c4895c | 5384 | SIGTYPE (*volatile old_sigpipe) (); |
6044e593 RS |
5385 | |
5386 | GCPRO1 (object); | |
d0d6b7c5 | 5387 | |
d0d6b7c5 | 5388 | #ifdef VMS |
d0d6b7c5 JB |
5389 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); |
5390 | #endif /* VMS */ | |
5391 | ||
6bfd98e7 | 5392 | if (p->raw_status_new) |
6b61353c KH |
5393 | update_status (p); |
5394 | if (! EQ (p->status, Qrun)) | |
5395 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5396 | if (p->outfd < 0) |
6b61353c | 5397 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5398 | |
60f0fb11 | 5399 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5400 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5401 | |
ed7a4b2d KH |
5402 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5403 | || (BUFFERP (object) | |
a92e4183 KH |
5404 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5405 | || EQ (object, Qt)) | |
278bfdd6 | 5406 | { |
6b61353c | 5407 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
278bfdd6 KH |
5408 | /* The coding system for encoding was changed to raw-text |
5409 | because we sent a unibyte text previously. Now we are | |
5410 | sending a multibyte text, thus we must encode it by the | |
6b61353c KH |
5411 | original coding system specified for the current process. */ |
5412 | setup_coding_system (p->encode_coding_system, coding); | |
e08bbb84 | 5413 | coding->src_multibyte = 1; |
278bfdd6 KH |
5414 | } |
5415 | else | |
5416 | { | |
a92e4183 KH |
5417 | /* For sending a unibyte text, character code conversion should |
5418 | not take place but EOL conversion should. So, setup raw-text | |
5419 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5420 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5421 | { |
5422 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5423 | { | |
5424 | /* But, before changing the coding, we must flush out data. */ | |
5425 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5426 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5427 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5428 | } |
5bbf78c1 KH |
5429 | setup_coding_system (raw_text_coding_system |
5430 | (Vlast_coding_system_used), | |
5431 | coding); | |
e08bbb84 | 5432 | coding->src_multibyte = 0; |
a92e4183 | 5433 | } |
278bfdd6 | 5434 | } |
a4a37e65 KH |
5435 | coding->dst_multibyte = 0; |
5436 | ||
ed7a4b2d | 5437 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5438 | { |
5bbf78c1 | 5439 | coding->dst_object = Qt; |
ed7a4b2d | 5440 | if (BUFFERP (object)) |
0fa1789e | 5441 | { |
5bbf78c1 KH |
5442 | int from_byte, from, to; |
5443 | int save_pt, save_pt_byte; | |
5444 | struct buffer *cur = current_buffer; | |
5445 | ||
5446 | set_buffer_internal (XBUFFER (object)); | |
5447 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5448 | ||
5449 | from_byte = PTR_BYTE_POS (buf); | |
5450 | from = BYTE_TO_CHAR (from_byte); | |
5451 | to = BYTE_TO_CHAR (from_byte + len); | |
5452 | TEMP_SET_PT_BOTH (from, from_byte); | |
5453 | encode_coding_object (coding, object, from, from_byte, | |
5454 | to, from_byte + len, Qt); | |
5455 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5456 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5457 | } |
5458 | else if (STRINGP (object)) | |
5459 | { | |
5bbf78c1 | 5460 | encode_coding_string (coding, object, 1); |
0fa1789e | 5461 | } |
5bbf78c1 | 5462 | else |
452294c2 | 5463 | { |
5bbf78c1 KH |
5464 | coding->dst_object = make_unibyte_string (buf, len); |
5465 | coding->produced = len; | |
452294c2 | 5466 | } |
ed7a4b2d | 5467 | |
e7fbaa65 | 5468 | len = coding->produced; |
8f924df7 | 5469 | buf = SDATA (coding->dst_object); |
0fa1789e | 5470 | } |
d0d6b7c5 JB |
5471 | |
5472 | #ifdef VMS | |
5473 | vs = get_vms_process_pointer (p->pid); | |
5474 | if (vs == 0) | |
5475 | error ("Could not find this process: %x", p->pid); | |
5476 | else if (write_to_vms_process (vs, buf, len)) | |
5477 | ; | |
0daad115 | 5478 | #else /* not VMS */ |
4556b700 RS |
5479 | |
5480 | if (pty_max_bytes == 0) | |
5481 | { | |
5482 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5483 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5484 | if (pty_max_bytes < 0) |
5485 | pty_max_bytes = 250; | |
5486 | #else | |
5487 | pty_max_bytes = 250; | |
5488 | #endif | |
5489 | /* Deduct one, to leave space for the eof. */ | |
5490 | pty_max_bytes--; | |
5491 | } | |
5492 | ||
0daad115 GM |
5493 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5494 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5495 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5496 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5497 | { |
5498 | process_sent_to = proc; | |
5499 | while (len > 0) | |
5500 | { | |
5501 | int this = len; | |
93b4f699 | 5502 | |
0daad115 GM |
5503 | /* Decide how much data we can send in one batch. |
5504 | Long lines need to be split into multiple batches. */ | |
60f0fb11 | 5505 | if (p->pty_flag) |
0daad115 | 5506 | { |
c0ec53ad SM |
5507 | /* Starting this at zero is always correct when not the first |
5508 | iteration because the previous iteration ended by sending C-d. | |
0daad115 GM |
5509 | It may not be correct for the first iteration |
5510 | if a partial line was sent in a separate send_process call. | |
5511 | If that proves worth handling, we need to save linepos | |
5512 | in the process object. */ | |
5513 | int linepos = 0; | |
5514 | unsigned char *ptr = (unsigned char *) buf; | |
5515 | unsigned char *end = (unsigned char *) buf + len; | |
5516 | ||
5517 | /* Scan through this text for a line that is too long. */ | |
5518 | while (ptr != end && linepos < pty_max_bytes) | |
5519 | { | |
5520 | if (*ptr == '\n') | |
5521 | linepos = 0; | |
5522 | else | |
5523 | linepos++; | |
5524 | ptr++; | |
5525 | } | |
5526 | /* If we found one, break the line there | |
5527 | and put in a C-d to force the buffer through. */ | |
5528 | this = ptr - buf; | |
5529 | } | |
93b4f699 | 5530 | |
0daad115 GM |
5531 | /* Send this batch, using one or more write calls. */ |
5532 | while (this > 0) | |
5533 | { | |
60f0fb11 | 5534 | int outfd = p->outfd; |
0daad115 | 5535 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5536 | #ifdef DATAGRAM_SOCKETS |
5537 | if (DATAGRAM_CHAN_P (outfd)) | |
5538 | { | |
5539 | rv = sendto (outfd, (char *) buf, this, | |
5540 | 0, datagram_address[outfd].sa, | |
5541 | datagram_address[outfd].len); | |
5542 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5543 | { |
5544 | signal (SIGPIPE, old_sigpipe); | |
5545 | report_file_error ("sending datagram", | |
5546 | Fcons (proc, Qnil)); | |
5547 | } | |
e690ca94 KS |
5548 | } |
5549 | else | |
5550 | #endif | |
6b61353c KH |
5551 | { |
5552 | rv = emacs_write (outfd, (char *) buf, this); | |
5553 | #ifdef ADAPTIVE_READ_BUFFERING | |
60f0fb11 SM |
5554 | if (p->read_output_delay > 0 |
5555 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5556 | { |
60f0fb11 | 5557 | p->read_output_delay = 0; |
6b61353c | 5558 | process_output_delay_count--; |
60f0fb11 | 5559 | p->read_output_skip = 0; |
6b61353c KH |
5560 | } |
5561 | #endif | |
5562 | } | |
0daad115 | 5563 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5564 | |
0daad115 GM |
5565 | if (rv < 0) |
5566 | { | |
5567 | if (0 | |
d0d6b7c5 | 5568 | #ifdef EWOULDBLOCK |
0daad115 | 5569 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5570 | #endif |
5571 | #ifdef EAGAIN | |
0daad115 | 5572 | || errno == EAGAIN |
d0d6b7c5 | 5573 | #endif |
0daad115 | 5574 | ) |
177c0ea7 | 5575 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5576 | that may allow the program |
5577 | to finish doing output and read more. */ | |
5578 | { | |
0daad115 | 5579 | int offset = 0; |
4556b700 | 5580 | |
3433b6bd | 5581 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5582 | /* A gross hack to work around a bug in FreeBSD. |
5583 | In the following sequence, read(2) returns | |
5584 | bogus data: | |
5585 | ||
5586 | write(2) 1022 bytes | |
5587 | write(2) 954 bytes, get EAGAIN | |
5588 | read(2) 1024 bytes in process_read_output | |
5589 | read(2) 11 bytes in process_read_output | |
5590 | ||
5591 | That is, read(2) returns more bytes than have | |
5592 | ever been written successfully. The 1033 bytes | |
5593 | read are the 1022 bytes written successfully | |
5594 | after processing (for example with CRs added if | |
5595 | the terminal is set up that way which it is | |
5596 | here). The same bytes will be seen again in a | |
5597 | later read(2), without the CRs. */ | |
177c0ea7 | 5598 | |
0daad115 GM |
5599 | if (errno == EAGAIN) |
5600 | { | |
5601 | int flags = FWRITE; | |
60f0fb11 | 5602 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5603 | } |
3433b6bd | 5604 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5605 | |
0daad115 GM |
5606 | /* Running filters might relocate buffers or strings. |
5607 | Arrange to relocate BUF. */ | |
5608 | if (BUFFERP (object)) | |
5609 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); | |
5610 | else if (STRINGP (object)) | |
d5db4077 | 5611 | offset = buf - SDATA (object); |
0daad115 | 5612 | |
f3e6605c | 5613 | #ifdef EMACS_HAS_USECS |
214d6069 | 5614 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5615 | #else |
214d6069 | 5616 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5617 | #endif |
4556b700 | 5618 | |
0daad115 GM |
5619 | if (BUFFERP (object)) |
5620 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); | |
5621 | else if (STRINGP (object)) | |
d5db4077 | 5622 | buf = offset + SDATA (object); |
4556b700 | 5623 | |
0daad115 GM |
5624 | rv = 0; |
5625 | } | |
5626 | else | |
5627 | /* This is a real error. */ | |
5628 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5629 | } | |
5630 | buf += rv; | |
5631 | len -= rv; | |
5632 | this -= rv; | |
5633 | } | |
f76475ad | 5634 | |
0daad115 GM |
5635 | /* If we sent just part of the string, put in an EOF |
5636 | to force it through, before we send the rest. */ | |
5637 | if (len > 0) | |
5638 | Fprocess_send_eof (proc); | |
5639 | } | |
5640 | } | |
5641 | #endif /* not VMS */ | |
d0d6b7c5 JB |
5642 | else |
5643 | { | |
0ff69270 | 5644 | signal (SIGPIPE, old_sigpipe); |
0daad115 GM |
5645 | #ifndef VMS |
5646 | proc = process_sent_to; | |
6b61353c | 5647 | p = XPROCESS (proc); |
0daad115 | 5648 | #endif |
6bfd98e7 | 5649 | p->raw_status_new = 0; |
6b61353c | 5650 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); |
60f0fb11 | 5651 | p->tick = ++process_tick; |
d0d6b7c5 JB |
5652 | deactivate_process (proc); |
5653 | #ifdef VMS | |
6b61353c | 5654 | error ("Error writing to process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5655 | #else |
6b61353c | 5656 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5657 | #endif |
5658 | } | |
6044e593 RS |
5659 | |
5660 | UNGCPRO; | |
d0d6b7c5 JB |
5661 | } |
5662 | ||
5663 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5664 | 3, 3, 0, |
5665 | doc: /* Send current contents of region as input to PROCESS. | |
5666 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5667 | nil, indicating the current buffer's process. | |
5668 | Called from program, takes three arguments, PROCESS, START and END. | |
5669 | If the region is more than 500 characters long, | |
5670 | it is sent in several bunches. This may happen even for shorter regions. | |
5671 | Output from processes can arrive in between bunches. */) | |
5672 | (process, start, end) | |
d0d6b7c5 JB |
5673 | Lisp_Object process, start, end; |
5674 | { | |
5675 | Lisp_Object proc; | |
1b234f64 | 5676 | int start1, end1; |
d0d6b7c5 JB |
5677 | |
5678 | proc = get_process (process); | |
5679 | validate_region (&start, &end); | |
1b234f64 KH |
5680 | |
5681 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5682 | move_gap (XINT (start)); | |
5683 | ||
5684 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5685 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5686 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
5687 | Fcurrent_buffer ()); | |
5688 | ||
d0d6b7c5 JB |
5689 | return Qnil; |
5690 | } | |
5691 | ||
5692 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5693 | 2, 2, 0, |
5694 | doc: /* Send PROCESS the contents of STRING as input. | |
5695 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5696 | nil, indicating the current buffer's process. | |
5697 | If STRING is more than 500 characters long, | |
5698 | it is sent in several bunches. This may happen even for shorter strings. | |
5699 | Output from processes can arrive in between bunches. */) | |
5700 | (process, string) | |
d0d6b7c5 JB |
5701 | Lisp_Object process, string; |
5702 | { | |
5703 | Lisp_Object proc; | |
b7826503 | 5704 | CHECK_STRING (string); |
d0d6b7c5 | 5705 | proc = get_process (process); |
1b234f64 KH |
5706 | send_process (proc, SDATA (string), |
5707 | SBYTES (string), string); | |
d0d6b7c5 JB |
5708 | return Qnil; |
5709 | } | |
5710 | \f | |
16782258 JD |
5711 | /* Return the foreground process group for the tty/pty that |
5712 | the process P uses. */ | |
5713 | static int | |
5714 | emacs_get_tty_pgrp (p) | |
5715 | struct Lisp_Process *p; | |
5716 | { | |
5717 | int gid = -1; | |
5718 | ||
f3d9532b | 5719 | #ifdef TIOCGPGRP |
60f0fb11 | 5720 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5721 | { |
5722 | int fd; | |
5723 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5724 | master side. Try the slave side. */ | |
5725 | fd = emacs_open (XSTRING (p->tty_name)->data, O_RDONLY, 0); | |
5726 | ||
5727 | if (fd != -1) | |
5728 | { | |
5729 | ioctl (fd, TIOCGPGRP, &gid); | |
5730 | emacs_close (fd); | |
5731 | } | |
5732 | } | |
5733 | #endif /* defined (TIOCGPGRP ) */ | |
5734 | ||
5735 | return gid; | |
5736 | } | |
5737 | ||
b81ea5ef RS |
5738 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5739 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5740 | doc: /* Return t if PROCESS has given the terminal to a child. |
5741 | If the operating system does not make it possible to find out, | |
5742 | return t unconditionally. */) | |
5743 | (process) | |
b81ea5ef RS |
5744 | Lisp_Object process; |
5745 | { | |
5746 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5747 | in a way that will cause returning t. */ | |
16782258 | 5748 | int gid; |
b81ea5ef RS |
5749 | Lisp_Object proc; |
5750 | struct Lisp_Process *p; | |
5751 | ||
5752 | proc = get_process (process); | |
5753 | p = XPROCESS (proc); | |
5754 | ||
5755 | if (!EQ (p->childp, Qt)) | |
5756 | error ("Process %s is not a subprocess", | |
d5db4077 | 5757 | SDATA (p->name)); |
60f0fb11 | 5758 | if (p->infd < 0) |
b81ea5ef | 5759 | error ("Process %s is not active", |
d5db4077 | 5760 | SDATA (p->name)); |
b81ea5ef | 5761 | |
16782258 | 5762 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5763 | |
6bfd98e7 | 5764 | if (gid == p->pid) |
b81ea5ef RS |
5765 | return Qnil; |
5766 | return Qt; | |
5767 | } | |
5768 | \f | |
d0d6b7c5 | 5769 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5770 | If CURRENT_GROUP is t, that means send to the process group |
5771 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5772 | This is used for various commands in shell mode. |
b81ea5ef RS |
5773 | If CURRENT_GROUP is lambda, that means send to the process group |
5774 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5775 | ||
d0d6b7c5 | 5776 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5777 | right away. |
5778 | ||
5779 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5780 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5781 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5782 | |
f9738840 | 5783 | static void |
d0d6b7c5 JB |
5784 | process_send_signal (process, signo, current_group, nomsg) |
5785 | Lisp_Object process; | |
5786 | int signo; | |
5787 | Lisp_Object current_group; | |
5788 | int nomsg; | |
5789 | { | |
5790 | Lisp_Object proc; | |
5791 | register struct Lisp_Process *p; | |
5792 | int gid; | |
5793 | int no_pgrp = 0; | |
5794 | ||
5795 | proc = get_process (process); | |
5796 | p = XPROCESS (proc); | |
5797 | ||
5798 | if (!EQ (p->childp, Qt)) | |
5799 | error ("Process %s is not a subprocess", | |
d5db4077 | 5800 | SDATA (p->name)); |
60f0fb11 | 5801 | if (p->infd < 0) |
d0d6b7c5 | 5802 | error ("Process %s is not active", |
d5db4077 | 5803 | SDATA (p->name)); |
d0d6b7c5 | 5804 | |
60f0fb11 | 5805 | if (!p->pty_flag) |
d0d6b7c5 JB |
5806 | current_group = Qnil; |
5807 | ||
d0d6b7c5 | 5808 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5809 | if (NILP (current_group)) |
5810 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5811 | gid = p->pid; |
2af70a0c | 5812 | else |
d0d6b7c5 | 5813 | { |
b0310da4 | 5814 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5815 | /* If possible, send signals to the entire pgrp |
5816 | by sending an input character to it. */ | |
b0310da4 | 5817 | |
6be429b1 JB |
5818 | /* TERMIOS is the latest and bestest, and seems most likely to |
5819 | work. If the system has it, use it. */ | |
5820 | #ifdef HAVE_TERMIOS | |
5821 | struct termios t; | |
7f916a36 RS |
5822 | cc_t *sig_char = NULL; |
5823 | ||
60f0fb11 | 5824 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5825 | |
5826 | switch (signo) | |
5827 | { | |
5828 | case SIGINT: | |
7f916a36 RS |
5829 | sig_char = &t.c_cc[VINTR]; |
5830 | break; | |
6be429b1 JB |
5831 | |
5832 | case SIGQUIT: | |
7f916a36 RS |
5833 | sig_char = &t.c_cc[VQUIT]; |
5834 | break; | |
6be429b1 JB |
5835 | |
5836 | case SIGTSTP: | |
d0adf46f | 5837 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5838 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5839 | #else |
7f916a36 | 5840 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5841 | #endif |
7f916a36 | 5842 | break; |
6be429b1 JB |
5843 | } |
5844 | ||
ca4313d5 | 5845 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5846 | { |
5847 | send_process (proc, sig_char, 1, Qnil); | |
5848 | return; | |
5849 | } | |
5850 | /* If we can't send the signal with a character, | |
5851 | fall through and send it another way. */ | |
6be429b1 JB |
5852 | #else /* ! HAVE_TERMIOS */ |
5853 | ||
b0310da4 JB |
5854 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5855 | current control characters. */ | |
d0d6b7c5 | 5856 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5857 | |
d0d6b7c5 JB |
5858 | struct tchars c; |
5859 | struct ltchars lc; | |
5860 | ||
5861 | switch (signo) | |
5862 | { | |
5863 | case SIGINT: | |
60f0fb11 | 5864 | ioctl (p->infd, TIOCGETC, &c); |
4556b700 | 5865 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 5866 | return; |
d0d6b7c5 | 5867 | case SIGQUIT: |
60f0fb11 | 5868 | ioctl (p->infd, TIOCGETC, &c); |
4556b700 | 5869 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 5870 | return; |
0ad77c54 | 5871 | #ifdef SIGTSTP |
d0d6b7c5 | 5872 | case SIGTSTP: |
60f0fb11 | 5873 | ioctl (p->infd, TIOCGLTC, &lc); |
4556b700 | 5874 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 5875 | return; |
b0310da4 | 5876 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5877 | } |
b0310da4 JB |
5878 | |
5879 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
5880 | ||
5881 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
5882 | characters. */ | |
5883 | #ifdef TCGETA | |
d0d6b7c5 JB |
5884 | struct termio t; |
5885 | switch (signo) | |
5886 | { | |
5887 | case SIGINT: | |
60f0fb11 | 5888 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 5889 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 5890 | return; |
d0d6b7c5 | 5891 | case SIGQUIT: |
60f0fb11 | 5892 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 5893 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 5894 | return; |
7d79e3b4 | 5895 | #ifdef SIGTSTP |
d0d6b7c5 | 5896 | case SIGTSTP: |
60f0fb11 | 5897 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 5898 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 5899 | return; |
b0310da4 | 5900 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5901 | } |
b0310da4 JB |
5902 | #else /* ! defined (TCGETA) */ |
5903 | Your configuration files are messed up. | |
5904 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
5905 | you'd better be using one of the alternatives above! */ | |
5906 | #endif /* ! defined (TCGETA) */ | |
5907 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
f1c206fc | 5908 | /* In this case, the code above should alway returns. */ |
20505336 | 5909 | abort (); |
f1c206fc RS |
5910 | #endif /* ! defined HAVE_TERMIOS */ |
5911 | ||
5912 | /* The code above may fall through if it can't | |
5913 | handle the signal. */ | |
20505336 | 5914 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5915 | |
177c0ea7 | 5916 | #ifdef TIOCGPGRP |
2af70a0c | 5917 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5918 | Otherwise, use the pty to get the pgrp. |
5919 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5920 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5921 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5922 | His patch indicates that if TIOCGPGRP returns an error, then |
5923 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5924 | |
16782258 | 5925 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5926 | |
16782258 JD |
5927 | if (gid == -1) |
5928 | /* If we can't get the information, assume | |
5929 | the shell owns the tty. */ | |
6bfd98e7 | 5930 | gid = p->pid; |
2af70a0c RS |
5931 | |
5932 | /* It is not clear whether anything really can set GID to -1. | |
5933 | Perhaps on some system one of those ioctls can or could do so. | |
5934 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5935 | if (gid == -1) |
5936 | no_pgrp = 1; | |
b0310da4 | 5937 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5938 | /* Can't select pgrps on this system, so we know that |
5939 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5940 | gid = p->pid; |
301c3fe4 | 5941 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5942 | |
5943 | /* If current_group is lambda, and the shell owns the terminal, | |
5944 | don't send any signal. */ | |
6bfd98e7 | 5945 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5946 | return; |
d0d6b7c5 | 5947 | } |
d0d6b7c5 JB |
5948 | |
5949 | switch (signo) | |
5950 | { | |
5951 | #ifdef SIGCONT | |
5952 | case SIGCONT: | |
6bfd98e7 | 5953 | p->raw_status_new = 0; |
d0d6b7c5 | 5954 | p->status = Qrun; |
60f0fb11 | 5955 | p->tick = ++process_tick; |
d0d6b7c5 | 5956 | if (!nomsg) |
ff6daed3 | 5957 | status_notify (NULL); |
d0d6b7c5 | 5958 | break; |
301c3fe4 | 5959 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 JB |
5960 | case SIGINT: |
5961 | #ifdef VMS | |
4556b700 | 5962 | send_process (proc, "\003", 1, Qnil); /* ^C */ |
d0d6b7c5 JB |
5963 | goto whoosh; |
5964 | #endif | |
5965 | case SIGQUIT: | |
5966 | #ifdef VMS | |
4556b700 | 5967 | send_process (proc, "\031", 1, Qnil); /* ^Y */ |
d0d6b7c5 JB |
5968 | goto whoosh; |
5969 | #endif | |
5970 | case SIGKILL: | |
5971 | #ifdef VMS | |
6bfd98e7 | 5972 | sys$forcex (&(p->pid), 0, 1); |
d0d6b7c5 JB |
5973 | whoosh: |
5974 | #endif | |
60f0fb11 | 5975 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5976 | break; |
5977 | } | |
5978 | ||
5979 | /* If we don't have process groups, send the signal to the immediate | |
5980 | subprocess. That isn't really right, but it's better than any | |
5981 | obvious alternative. */ | |
5982 | if (no_pgrp) | |
5983 | { | |
6bfd98e7 | 5984 | kill (p->pid, signo); |
d0d6b7c5 JB |
5985 | return; |
5986 | } | |
5987 | ||
5988 | /* gid may be a pid, or minus a pgrp's number */ | |
5989 | #ifdef TIOCSIGSEND | |
5990 | if (!NILP (current_group)) | |
16782258 | 5991 | { |
60f0fb11 | 5992 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
5993 | EMACS_KILLPG (gid, signo); |
5994 | } | |
d0d6b7c5 JB |
5995 | else |
5996 | { | |
6bfd98e7 | 5997 | gid = - p->pid; |
d0d6b7c5 JB |
5998 | kill (gid, signo); |
5999 | } | |
301c3fe4 | 6000 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 6001 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 6002 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
6003 | } |
6004 | ||
6005 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
6006 | doc: /* Interrupt process PROCESS. |
6007 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 6008 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
6009 | Second arg CURRENT-GROUP non-nil means send signal to |
6010 | the current process-group of the process's controlling terminal | |
6011 | rather than to the process's own process group. | |
6012 | If the process is a shell, this means interrupt current subjob | |
6013 | rather than the shell. | |
6014 | ||
6015 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
6016 | don't send the signal. */) | |
6017 | (process, current_group) | |
d0d6b7c5 JB |
6018 | Lisp_Object process, current_group; |
6019 | { | |
6020 | process_send_signal (process, SIGINT, current_group, 0); | |
6021 | return process; | |
6022 | } | |
6023 | ||
6024 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
6025 | doc: /* Kill process PROCESS. May be process or name of one. |
6026 | See function `interrupt-process' for more details on usage. */) | |
6027 | (process, current_group) | |
d0d6b7c5 JB |
6028 | Lisp_Object process, current_group; |
6029 | { | |
6030 | process_send_signal (process, SIGKILL, current_group, 0); | |
6031 | return process; | |
6032 | } | |
6033 | ||
6034 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
6035 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
6036 | See function `interrupt-process' for more details on usage. */) | |
6037 | (process, current_group) | |
d0d6b7c5 JB |
6038 | Lisp_Object process, current_group; |
6039 | { | |
6040 | process_send_signal (process, SIGQUIT, current_group, 0); | |
6041 | return process; | |
6042 | } | |
6043 | ||
6044 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6045 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6046 | See function `interrupt-process' for more details on usage. |
e690ca94 | 6047 | If PROCESS is a network process, inhibit handling of incoming traffic. */) |
fdb82f93 | 6048 | (process, current_group) |
d0d6b7c5 JB |
6049 | Lisp_Object process, current_group; |
6050 | { | |
e690ca94 KS |
6051 | #ifdef HAVE_SOCKETS |
6052 | if (PROCESSP (process) && NETCONN_P (process)) | |
6053 | { | |
6054 | struct Lisp_Process *p; | |
177c0ea7 | 6055 | |
e690ca94 KS |
6056 | p = XPROCESS (process); |
6057 | if (NILP (p->command) | |
60f0fb11 | 6058 | && p->infd >= 0) |
e690ca94 | 6059 | { |
60f0fb11 SM |
6060 | FD_CLR (p->infd, &input_wait_mask); |
6061 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
6062 | } |
6063 | p->command = Qt; | |
6064 | return process; | |
6065 | } | |
6066 | #endif | |
d0d6b7c5 | 6067 | #ifndef SIGTSTP |
a9a73d6c | 6068 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6069 | #else |
6070 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6071 | #endif | |
6072 | return process; | |
6073 | } | |
6074 | ||
6075 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6076 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6077 | See function `interrupt-process' for more details on usage. |
e690ca94 | 6078 | If PROCESS is a network process, resume handling of incoming traffic. */) |
fdb82f93 | 6079 | (process, current_group) |
d0d6b7c5 JB |
6080 | Lisp_Object process, current_group; |
6081 | { | |
e690ca94 KS |
6082 | #ifdef HAVE_SOCKETS |
6083 | if (PROCESSP (process) && NETCONN_P (process)) | |
6084 | { | |
6085 | struct Lisp_Process *p; | |
6086 | ||
6087 | p = XPROCESS (process); | |
6088 | if (EQ (p->command, Qt) | |
60f0fb11 | 6089 | && p->infd >= 0 |
e690ca94 KS |
6090 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
6091 | { | |
60f0fb11 SM |
6092 | FD_SET (p->infd, &input_wait_mask); |
6093 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
6094 | } |
6095 | p->command = Qnil; | |
6096 | return process; | |
6097 | } | |
6098 | #endif | |
d0d6b7c5 JB |
6099 | #ifdef SIGCONT |
6100 | process_send_signal (process, SIGCONT, current_group, 0); | |
6101 | #else | |
a9a73d6c | 6102 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6103 | #endif |
6104 | return process; | |
6105 | } | |
6106 | ||
6107 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6108 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6109 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6110 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6111 | process to signal; in this case, the process need not be a child of |
6112 | this Emacs. | |
fdb82f93 | 6113 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
6114 | (process, sigcode) |
6115 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 6116 | { |
6bfd98e7 | 6117 | pid_t pid; |
cdd5ea86 KS |
6118 | |
6119 | if (INTEGERP (process)) | |
6120 | { | |
6bfd98e7 SM |
6121 | pid = XINT (process); |
6122 | goto got_it; | |
6123 | } | |
6124 | ||
6125 | if (FLOATP (process)) | |
6126 | { | |
648f6edf | 6127 | pid = (pid_t) XFLOAT_DATA (process); |
cdd5ea86 KS |
6128 | goto got_it; |
6129 | } | |
6130 | ||
6131 | if (STRINGP (process)) | |
6132 | { | |
6133 | Lisp_Object tem; | |
6134 | if (tem = Fget_process (process), NILP (tem)) | |
6135 | { | |
6bfd98e7 SM |
6136 | pid = XINT (Fstring_to_number (process, make_number (10))); |
6137 | if (pid > 0) | |
cdd5ea86 KS |
6138 | goto got_it; |
6139 | } | |
6140 | process = tem; | |
6141 | } | |
6142 | else | |
6143 | process = get_process (process); | |
177c0ea7 | 6144 | |
cdd5ea86 KS |
6145 | if (NILP (process)) |
6146 | return process; | |
6147 | ||
6148 | CHECK_PROCESS (process); | |
6149 | pid = XPROCESS (process)->pid; | |
6bfd98e7 | 6150 | if (pid <= 0) |
cdd5ea86 KS |
6151 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
6152 | ||
6153 | got_it: | |
4766242d | 6154 | |
59324b1d | 6155 | #define parse_signal(NAME, VALUE) \ |
ec0f21f4 | 6156 | else if (!xstricmp (name, NAME)) \ |
4766242d RS |
6157 | XSETINT (sigcode, VALUE) |
6158 | ||
6159 | if (INTEGERP (sigcode)) | |
6160 | ; | |
6161 | else | |
6162 | { | |
6163 | unsigned char *name; | |
6164 | ||
b7826503 | 6165 | CHECK_SYMBOL (sigcode); |
d5db4077 | 6166 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6167 | |
ec0f21f4 | 6168 | if (!strncmp(name, "SIG", 3) || !strncmp(name, "sig", 3)) |
675984ed KS |
6169 | name += 3; |
6170 | ||
4766242d RS |
6171 | if (0) |
6172 | ; | |
59324b1d KS |
6173 | #ifdef SIGUSR1 |
6174 | parse_signal ("usr1", SIGUSR1); | |
6175 | #endif | |
6176 | #ifdef SIGUSR2 | |
6177 | parse_signal ("usr2", SIGUSR2); | |
6178 | #endif | |
6179 | #ifdef SIGTERM | |
6180 | parse_signal ("term", SIGTERM); | |
6181 | #endif | |
4766242d | 6182 | #ifdef SIGHUP |
59324b1d | 6183 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6184 | #endif |
6185 | #ifdef SIGINT | |
59324b1d | 6186 | parse_signal ("int", SIGINT); |
4766242d RS |
6187 | #endif |
6188 | #ifdef SIGQUIT | |
59324b1d | 6189 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6190 | #endif |
6191 | #ifdef SIGILL | |
59324b1d | 6192 | parse_signal ("ill", SIGILL); |
4766242d RS |
6193 | #endif |
6194 | #ifdef SIGABRT | |
59324b1d | 6195 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6196 | #endif |
6197 | #ifdef SIGEMT | |
59324b1d | 6198 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6199 | #endif |
6200 | #ifdef SIGKILL | |
59324b1d | 6201 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6202 | #endif |
6203 | #ifdef SIGFPE | |
59324b1d | 6204 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6205 | #endif |
6206 | #ifdef SIGBUS | |
59324b1d | 6207 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6208 | #endif |
6209 | #ifdef SIGSEGV | |
59324b1d | 6210 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6211 | #endif |
6212 | #ifdef SIGSYS | |
59324b1d | 6213 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6214 | #endif |
6215 | #ifdef SIGPIPE | |
59324b1d | 6216 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6217 | #endif |
6218 | #ifdef SIGALRM | |
59324b1d | 6219 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6220 | #endif |
6221 | #ifdef SIGURG | |
59324b1d | 6222 | parse_signal ("urg", SIGURG); |
4766242d RS |
6223 | #endif |
6224 | #ifdef SIGSTOP | |
59324b1d | 6225 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6226 | #endif |
6227 | #ifdef SIGTSTP | |
59324b1d | 6228 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6229 | #endif |
6230 | #ifdef SIGCONT | |
59324b1d | 6231 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6232 | #endif |
6233 | #ifdef SIGCHLD | |
59324b1d | 6234 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6235 | #endif |
6236 | #ifdef SIGTTIN | |
59324b1d | 6237 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6238 | #endif |
6239 | #ifdef SIGTTOU | |
59324b1d | 6240 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6241 | #endif |
6242 | #ifdef SIGIO | |
59324b1d | 6243 | parse_signal ("io", SIGIO); |
4766242d RS |
6244 | #endif |
6245 | #ifdef SIGXCPU | |
59324b1d | 6246 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6247 | #endif |
6248 | #ifdef SIGXFSZ | |
59324b1d | 6249 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6250 | #endif |
6251 | #ifdef SIGVTALRM | |
59324b1d | 6252 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6253 | #endif |
6254 | #ifdef SIGPROF | |
59324b1d | 6255 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6256 | #endif |
6257 | #ifdef SIGWINCH | |
59324b1d | 6258 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6259 | #endif |
6260 | #ifdef SIGINFO | |
59324b1d | 6261 | parse_signal ("info", SIGINFO); |
4766242d RS |
6262 | #endif |
6263 | else | |
9fa195a2 | 6264 | error ("Undefined signal name %s", name); |
4766242d RS |
6265 | } |
6266 | ||
59324b1d | 6267 | #undef parse_signal |
4766242d | 6268 | |
6bfd98e7 | 6269 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6270 | } |
6271 | ||
6272 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6273 | doc: /* Make PROCESS see end-of-file in its input. |
6274 | EOF comes after any text already sent to it. | |
6275 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6276 | nil, indicating the current buffer's process. | |
6277 | If PROCESS is a network connection, or is a process communicating | |
6278 | through a pipe (as opposed to a pty), then you cannot send any more | |
6279 | text to PROCESS after you call this function. */) | |
6280 | (process) | |
d0d6b7c5 JB |
6281 | Lisp_Object process; |
6282 | { | |
6283 | Lisp_Object proc; | |
de7fbd09 | 6284 | struct coding_system *coding; |
d0d6b7c5 | 6285 | |
e690ca94 KS |
6286 | if (DATAGRAM_CONN_P (process)) |
6287 | return process; | |
6288 | ||
d0d6b7c5 | 6289 | proc = get_process (process); |
60f0fb11 | 6290 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6291 | |
6292 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6293 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 RS |
6294 | update_status (XPROCESS (proc)); |
6295 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6296 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6297 | |
de7fbd09 KH |
6298 | if (CODING_REQUIRE_FLUSHING (coding)) |
6299 | { | |
6300 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6301 | send_process (proc, "", 0, Qnil); | |
6302 | } | |
6303 | ||
d0d6b7c5 | 6304 | #ifdef VMS |
4556b700 | 6305 | send_process (proc, "\032", 1, Qnil); /* ^z */ |
d0d6b7c5 | 6306 | #else |
60f0fb11 | 6307 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6308 | send_process (proc, "\004", 1, Qnil); |
d0d6b7c5 JB |
6309 | else |
6310 | { | |
4525f571 RS |
6311 | int old_outfd, new_outfd; |
6312 | ||
93853f3d | 6313 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6314 | /* If this is a network connection, or socketpair is used |
6315 | for communication with the subprocess, call shutdown to cause EOF. | |
6316 | (In some old system, shutdown to socketpair doesn't work. | |
6317 | Then we just can't win.) */ | |
6bfd98e7 | 6318 | if (XPROCESS (proc)->pid == 0 |
60f0fb11 SM |
6319 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6320 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6321 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6322 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6323 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6324 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6325 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6326 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6327 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6328 | if (new_outfd < 0) |
6329 | abort (); | |
60f0fb11 | 6330 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6331 | |
6332 | if (!proc_encode_coding_system[new_outfd]) | |
6333 | proc_encode_coding_system[new_outfd] | |
6334 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6335 | bcopy (proc_encode_coding_system[old_outfd], | |
6336 | proc_encode_coding_system[new_outfd], | |
6337 | sizeof (struct coding_system)); | |
6338 | bzero (proc_encode_coding_system[old_outfd], | |
6339 | sizeof (struct coding_system)); | |
6340 | ||
60f0fb11 | 6341 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 JB |
6342 | } |
6343 | #endif /* VMS */ | |
d0d6b7c5 JB |
6344 | return process; |
6345 | } | |
6346 | ||
6347 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 6348 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 6349 | |
6b53bb85 | 6350 | void |
d0d6b7c5 JB |
6351 | kill_buffer_processes (buffer) |
6352 | Lisp_Object buffer; | |
6353 | { | |
6354 | Lisp_Object tail, proc; | |
6355 | ||
8e50cc2d | 6356 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6357 | { |
70949dac | 6358 | proc = XCDR (XCAR (tail)); |
8e50cc2d | 6359 | if (PROCESSP (proc) |
d0d6b7c5 JB |
6360 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
6361 | { | |
6362 | if (NETCONN_P (proc)) | |
e1ab4959 | 6363 | Fdelete_process (proc); |
60f0fb11 | 6364 | else if (XPROCESS (proc)->infd >= 0) |
d0d6b7c5 JB |
6365 | process_send_signal (proc, SIGHUP, Qnil, 1); |
6366 | } | |
6367 | } | |
6368 | } | |
6369 | \f | |
3fed8ad5 GM |
6370 | /* On receipt of a signal that a child status has changed, loop asking |
6371 | about children with changed statuses until the system says there | |
6372 | are no more. | |
177c0ea7 | 6373 | |
3fed8ad5 GM |
6374 | All we do is change the status; we do not run sentinels or print |
6375 | notifications. That is saved for the next time keyboard input is | |
6376 | done, in order to avoid timing errors. | |
6377 | ||
6378 | ** WARNING: this can be called during garbage collection. | |
6379 | Therefore, it must not be fooled by the presence of mark bits in | |
6380 | Lisp objects. | |
6381 | ||
6382 | ** USG WARNING: Although it is not obvious from the documentation | |
6383 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6384 | signal() before executing at least one wait(), otherwise the | |
6385 | handler will be called again, resulting in an infinite loop. The | |
6386 | relevant portion of the documentation reads "SIGCLD signals will be | |
6387 | queued and the signal-catching function will be continually | |
6388 | reentered until the queue is empty". Invoking signal() causes the | |
6389 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6390 | Inc. |
6391 | ||
6392 | ** Malloc WARNING: This should never call malloc either directly or | |
6393 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6394 | |
a5cfdda8 | 6395 | #ifdef SIGCHLD |
d0d6b7c5 JB |
6396 | SIGTYPE |
6397 | sigchld_handler (signo) | |
6398 | int signo; | |
6399 | { | |
6400 | int old_errno = errno; | |
6401 | Lisp_Object proc; | |
6402 | register struct Lisp_Process *p; | |
6be429b1 | 6403 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 | 6404 | |
333f1b6f JD |
6405 | SIGNAL_THREAD_CHECK (signo); |
6406 | ||
d0d6b7c5 JB |
6407 | #ifdef BSD4_1 |
6408 | extern int sigheld; | |
6409 | sigheld |= sigbit (SIGCHLD); | |
6410 | #endif | |
6411 | ||
6412 | while (1) | |
6413 | { | |
8e050977 | 6414 | pid_t pid; |
d0d6b7c5 JB |
6415 | WAITTYPE w; |
6416 | Lisp_Object tail; | |
6417 | ||
6418 | #ifdef WNOHANG | |
6419 | #ifndef WUNTRACED | |
6420 | #define WUNTRACED 0 | |
6421 | #endif /* no WUNTRACED */ | |
6422 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 SS |
6423 | do |
6424 | { | |
29ed4d51 CY |
6425 | errno = 0; |
6426 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
29ed4d51 | 6427 | } |
e7d4a904 | 6428 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6429 | |
6430 | if (pid <= 0) | |
6431 | { | |
3fed8ad5 GM |
6432 | /* PID == 0 means no processes found, PID == -1 means a real |
6433 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6434 | |
6435 | /* USG systems forget handlers when they are used; | |
6436 | must reestablish each time */ | |
3c0ee47b | 6437 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6438 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
6439 | #endif | |
6440 | #ifdef BSD4_1 | |
6441 | sigheld &= ~sigbit (SIGCHLD); | |
6442 | sigrelse (SIGCHLD); | |
6443 | #endif | |
6444 | errno = old_errno; | |
6445 | return; | |
6446 | } | |
6447 | #else | |
6448 | pid = wait (&w); | |
6449 | #endif /* no WNOHANG */ | |
6450 | ||
6451 | /* Find the process that signaled us, and record its status. */ | |
6452 | ||
a5cfdda8 | 6453 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6454 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6455 | { |
8e050977 | 6456 | Lisp_Object xpid = XCAR (tail); |
8e50cc2d SM |
6457 | if ((INTEGERP (xpid) && pid == (pid_t) XINT (xpid)) |
6458 | || (FLOATP (xpid) && pid == (pid_t) XFLOAT_DATA (xpid))) | |
8e050977 CY |
6459 | { |
6460 | XSETCAR (tail, Qnil); | |
6461 | goto sigchld_end_of_loop; | |
6462 | } | |
a5cfdda8 KS |
6463 | } |
6464 | ||
6465 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6466 | p = 0; |
8e50cc2d | 6467 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6468 | { |
70949dac | 6469 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6470 | p = XPROCESS (proc); |
8e50cc2d | 6471 | if (EQ (p->childp, Qt) && p->pid == pid) |
d0d6b7c5 JB |
6472 | break; |
6473 | p = 0; | |
6474 | } | |
6475 | ||
6476 | /* Look for an asynchronous process whose pid hasn't been filled | |
6477 | in yet. */ | |
6478 | if (p == 0) | |
8e50cc2d | 6479 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6480 | { |
70949dac | 6481 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6482 | p = XPROCESS (proc); |
6bfd98e7 | 6483 | if (p->pid == -1) |
d0d6b7c5 JB |
6484 | break; |
6485 | p = 0; | |
6486 | } | |
177c0ea7 | 6487 | |
d0d6b7c5 JB |
6488 | /* Change the status of the process that was found. */ |
6489 | if (p != 0) | |
6490 | { | |
6491 | union { int i; WAITTYPE wt; } u; | |
e98d950b | 6492 | int clear_desc_flag = 0; |
177c0ea7 | 6493 | |
60f0fb11 | 6494 | p->tick = ++process_tick; |
d0d6b7c5 | 6495 | u.wt = w; |
6bfd98e7 SM |
6496 | p->raw_status = u.i; |
6497 | p->raw_status_new = 1; | |
177c0ea7 | 6498 | |
d0d6b7c5 | 6499 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6500 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6501 | && p->infd >= 0) |
e98d950b RS |
6502 | clear_desc_flag = 1; |
6503 | ||
6504 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6505 | if (clear_desc_flag) | |
6506 | { | |
60f0fb11 SM |
6507 | FD_CLR (p->infd, &input_wait_mask); |
6508 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6509 | } |
6be429b1 | 6510 | |
214d6069 | 6511 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6512 | look around. */ |
6513 | if (input_available_clear_time) | |
6514 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6515 | } |
6516 | ||
a5cfdda8 KS |
6517 | /* There was no asynchronous process found for that pid: we have |
6518 | a synchronous process. */ | |
d0d6b7c5 JB |
6519 | else |
6520 | { | |
6521 | synch_process_alive = 0; | |
6522 | ||
6523 | /* Report the status of the synchronous process. */ | |
6524 | if (WIFEXITED (w)) | |
6525 | synch_process_retcode = WRETCODE (w); | |
6526 | else if (WIFSIGNALED (w)) | |
6b61353c | 6527 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6528 | |
214d6069 | 6529 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6530 | look around. */ |
6531 | if (input_available_clear_time) | |
6532 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6533 | } |
6534 | ||
a5cfdda8 KS |
6535 | sigchld_end_of_loop: |
6536 | ; | |
6537 | ||
d0d6b7c5 JB |
6538 | /* On some systems, we must return right away. |
6539 | If any more processes want to signal us, we will | |
6540 | get another signal. | |
6541 | Otherwise (on systems that have WNOHANG), loop around | |
6542 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6543 | #if (defined WINDOWSNT \ |
8a2a6032 | 6544 | || (defined USG && !defined GNU_LINUX \ |
4e6277d8 | 6545 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6546 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6547 | signal (signo, sigchld_handler); |
6548 | #endif | |
6549 | errno = old_errno; | |
6550 | return; | |
6551 | #endif /* USG, but not HPUX with WNOHANG */ | |
6552 | } | |
6553 | } | |
a5cfdda8 | 6554 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6555 | \f |
6556 | ||
6557 | static Lisp_Object | |
6558 | exec_sentinel_unwind (data) | |
6559 | Lisp_Object data; | |
6560 | { | |
70949dac | 6561 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6562 | return Qnil; |
6563 | } | |
6564 | ||
3b9a3dfa RS |
6565 | static Lisp_Object |
6566 | exec_sentinel_error_handler (error) | |
6567 | Lisp_Object error; | |
6568 | { | |
6569 | cmd_error_internal (error, "error in process sentinel: "); | |
6570 | Vinhibit_quit = Qt; | |
6571 | update_echo_area (); | |
833ba342 | 6572 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6573 | return Qt; |
3b9a3dfa RS |
6574 | } |
6575 | ||
d0d6b7c5 JB |
6576 | static void |
6577 | exec_sentinel (proc, reason) | |
6578 | Lisp_Object proc, reason; | |
6579 | { | |
dfc21838 | 6580 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6581 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6582 | int count = SPECPDL_INDEX (); |
4da2f5be | 6583 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6584 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6585 | |
84af9896 RS |
6586 | if (inhibit_sentinels) |
6587 | return; | |
6588 | ||
dfc21838 RS |
6589 | /* No need to gcpro these, because all we do with them later |
6590 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6591 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6592 | XSETBUFFER (obuffer, current_buffer); |
6593 | okeymap = current_buffer->keymap; | |
6594 | ||
d0d6b7c5 JB |
6595 | sentinel = p->sentinel; |
6596 | if (NILP (sentinel)) | |
6597 | return; | |
6598 | ||
6599 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6600 | assure that it gets restored no matter how the sentinel exits. */ | |
6601 | p->sentinel = Qnil; | |
6602 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6603 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6604 | specbind (Qinhibit_quit, Qt); | |
6545aada | 6605 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 6606 | |
4da2f5be RS |
6607 | /* In case we get recursively called, |
6608 | and we already saved the match data nonrecursively, | |
6609 | save the same match data in safely recursive fashion. */ | |
6610 | if (outer_running_asynch_code) | |
6611 | { | |
6612 | Lisp_Object tem; | |
89f2614d KS |
6613 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6614 | restore_search_regs (); | |
6615 | record_unwind_save_match_data (); | |
6616 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6617 | } |
6618 | ||
6619 | /* For speed, if a search happens within this code, | |
6620 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6621 | running_asynch_code = 1; |
4da2f5be | 6622 | |
3b9a3dfa RS |
6623 | internal_condition_case_1 (read_process_output_call, |
6624 | Fcons (sentinel, | |
6625 | Fcons (proc, Fcons (reason, Qnil))), | |
6626 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6627 | exec_sentinel_error_handler); | |
4da2f5be RS |
6628 | |
6629 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6630 | restore_search_regs (); |
4da2f5be | 6631 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6632 | |
6633 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6634 | |
6635 | /* Restore waiting_for_user_input_p as it was | |
6636 | when we were called, in case the filter clobbered it. */ | |
6637 | waiting_for_user_input_p = waiting; | |
6638 | ||
7973cfa8 | 6639 | #if 0 |
dfc21838 RS |
6640 | if (! EQ (Fcurrent_buffer (), obuffer) |
6641 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6642 | #endif |
927e08be RS |
6643 | /* But do it only if the caller is actually going to read events. |
6644 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6645 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6646 | if (waiting_for_user_input_p == -1) |
6647 | record_asynch_buffer_change (); | |
8fb3cf64 | 6648 | |
2ea6d561 | 6649 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6650 | } |
6651 | ||
6652 | /* Report all recent events of a change in process status | |
6653 | (either run the sentinel or output a message). | |
b50fe468 RS |
6654 | This is usually done while Emacs is waiting for keyboard input |
6655 | but can be done at other times. */ | |
d0d6b7c5 | 6656 | |
ff6daed3 KS |
6657 | static void |
6658 | status_notify (deleting_process) | |
6659 | struct Lisp_Process *deleting_process; | |
d0d6b7c5 JB |
6660 | { |
6661 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6662 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6663 | struct gcpro gcpro1, gcpro2; |
6664 | ||
2e4149a8 KH |
6665 | tail = Qnil; |
6666 | msg = Qnil; | |
d0d6b7c5 JB |
6667 | /* We need to gcpro tail; if read_process_output calls a filter |
6668 | which deletes a process and removes the cons to which tail points | |
6669 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6670 | reference. */ | |
6671 | GCPRO2 (tail, msg); | |
6672 | ||
30623085 RS |
6673 | /* Set this now, so that if new processes are created by sentinels |
6674 | that we run, we get called again to handle their status changes. */ | |
6675 | update_tick = process_tick; | |
6676 | ||
99784d63 | 6677 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6678 | { |
30623085 RS |
6679 | Lisp_Object symbol; |
6680 | register struct Lisp_Process *p; | |
6681 | ||
99784d63 | 6682 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6683 | p = XPROCESS (proc); |
6684 | ||
60f0fb11 | 6685 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6686 | { |
60f0fb11 | 6687 | p->update_tick = p->tick; |
d0d6b7c5 | 6688 | |
30623085 | 6689 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6690 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6691 | && ! EQ (p->status, Qconnect) |
e690ca94 KS |
6692 | && ! EQ (p->status, Qlisten) |
6693 | && ! EQ (p->command, Qt) /* Network process not stopped. */ | |
60f0fb11 | 6694 | && p->infd >= 0 |
ff6daed3 | 6695 | && p != deleting_process |
60f0fb11 | 6696 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6697 | |
30623085 | 6698 | buffer = p->buffer; |
d0d6b7c5 | 6699 | |
30623085 | 6700 | /* Get the text to use for the message. */ |
6bfd98e7 | 6701 | if (p->raw_status_new) |
30623085 | 6702 | update_status (p); |
116c423c | 6703 | msg = status_message (p); |
d0d6b7c5 | 6704 | |
30623085 RS |
6705 | /* If process is terminated, deactivate it or delete it. */ |
6706 | symbol = p->status; | |
6707 | if (CONSP (p->status)) | |
70949dac | 6708 | symbol = XCAR (p->status); |
d0d6b7c5 | 6709 | |
30623085 RS |
6710 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6711 | || EQ (symbol, Qclosed)) | |
6712 | { | |
6713 | if (delete_exited_processes) | |
6714 | remove_process (proc); | |
6715 | else | |
6716 | deactivate_process (proc); | |
6717 | } | |
d0d6b7c5 | 6718 | |
0ad61fe7 RS |
6719 | /* The actions above may have further incremented p->tick. |
6720 | So set p->update_tick again | |
6721 | so that an error in the sentinel will not cause | |
6722 | this code to be run again. */ | |
60f0fb11 | 6723 | p->update_tick = p->tick; |
30623085 RS |
6724 | /* Now output the message suitably. */ |
6725 | if (!NILP (p->sentinel)) | |
6726 | exec_sentinel (proc, msg); | |
6727 | /* Don't bother with a message in the buffer | |
6728 | when a process becomes runnable. */ | |
6729 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6730 | { | |
6731 | Lisp_Object ro, tem; | |
6732 | struct buffer *old = current_buffer; | |
d8a2934e RS |
6733 | int opoint, opoint_byte; |
6734 | int before, before_byte; | |
2e4149a8 | 6735 | |
30623085 | 6736 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 6737 | |
30623085 RS |
6738 | /* Avoid error if buffer is deleted |
6739 | (probably that's why the process is dead, too) */ | |
6740 | if (NILP (XBUFFER (buffer)->name)) | |
6741 | continue; | |
6742 | Fset_buffer (buffer); | |
12ca5cdf | 6743 | |
6ec8bbd2 | 6744 | opoint = PT; |
d8a2934e | 6745 | opoint_byte = PT_BYTE; |
30623085 RS |
6746 | /* Insert new output into buffer |
6747 | at the current end-of-output marker, | |
6748 | thus preserving logical ordering of input and output. */ | |
6749 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6750 | Fgoto_char (p->mark); |
30623085 | 6751 | else |
d8a2934e | 6752 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6753 | |
6754 | before = PT; | |
d8a2934e | 6755 | before_byte = PT_BYTE; |
30623085 RS |
6756 | |
6757 | tem = current_buffer->read_only; | |
6758 | current_buffer->read_only = Qnil; | |
6759 | insert_string ("\nProcess "); | |
6760 | Finsert (1, &p->name); | |
6761 | insert_string (" "); | |
6762 | Finsert (1, &msg); | |
6763 | current_buffer->read_only = tem; | |
d8a2934e | 6764 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6765 | |
12ca5cdf | 6766 | if (opoint >= before) |
d8a2934e RS |
6767 | SET_PT_BOTH (opoint + (PT - before), |
6768 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6769 | else |
d8a2934e | 6770 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6771 | |
30623085 | 6772 | set_buffer_internal (old); |
d0d6b7c5 | 6773 | } |
30623085 RS |
6774 | } |
6775 | } /* end for */ | |
d0d6b7c5 JB |
6776 | |
6777 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
3007ebfb | 6778 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 6779 | |
d0d6b7c5 JB |
6780 | UNGCPRO; |
6781 | } | |
0fa1789e KH |
6782 | |
6783 | \f | |
6784 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6785 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6786 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6787 | DECODING will be used to decode subprocess output and ENCODING to | |
6788 | encode subprocess input. */) | |
f3d9532b JB |
6789 | (process, decoding, encoding) |
6790 | register Lisp_Object process, decoding, encoding; | |
0fa1789e KH |
6791 | { |
6792 | register struct Lisp_Process *p; | |
6793 | ||
f3d9532b JB |
6794 | CHECK_PROCESS (process); |
6795 | p = XPROCESS (process); | |
60f0fb11 | 6796 | if (p->infd < 0) |
d5db4077 | 6797 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6798 | if (p->outfd < 0) |
d5db4077 | 6799 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6800 | Fcheck_coding_system (decoding); |
6801 | Fcheck_coding_system (encoding); | |
76d812bb | 6802 | encoding = coding_inherit_eol_type (encoding, Qnil); |
03f04413 KH |
6803 | p->decode_coding_system = decoding; |
6804 | p->encode_coding_system = encoding; | |
f3d9532b | 6805 | setup_process_coding_systems (process); |
0fa1789e KH |
6806 | |
6807 | return Qnil; | |
6808 | } | |
6809 | ||
6810 | DEFUN ("process-coding-system", | |
6811 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6812 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
f3d9532b JB |
6813 | (process) |
6814 | register Lisp_Object process; | |
0fa1789e | 6815 | { |
f3d9532b JB |
6816 | CHECK_PROCESS (process); |
6817 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6818 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6819 | } |
03f04413 KH |
6820 | |
6821 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6822 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6823 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6824 | If FLAG is non-nil, the filter is given multibyte strings. | |
6825 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6826 | all character code conversion except for end-of-line conversion is |
6827 | suppressed. */) | |
f3d9532b JB |
6828 | (process, flag) |
6829 | Lisp_Object process, flag; | |
03f04413 KH |
6830 | { |
6831 | register struct Lisp_Process *p; | |
6832 | ||
f3d9532b JB |
6833 | CHECK_PROCESS (process); |
6834 | p = XPROCESS (process); | |
60f0fb11 | 6835 | p->filter_multibyte = !NILP (flag); |
f3d9532b | 6836 | setup_process_coding_systems (process); |
03f04413 KH |
6837 | |
6838 | return Qnil; | |
6839 | } | |
6840 | ||
6841 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6842 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6843 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
f3d9532b JB |
6844 | (process) |
6845 | Lisp_Object process; | |
03f04413 KH |
6846 | { |
6847 | register struct Lisp_Process *p; | |
6848 | ||
f3d9532b JB |
6849 | CHECK_PROCESS (process); |
6850 | p = XPROCESS (process); | |
03f04413 | 6851 | |
60f0fb11 | 6852 | return (p->filter_multibyte ? Qt : Qnil); |
03f04413 KH |
6853 | } |
6854 | ||
6855 | ||
d0d6b7c5 | 6856 | \f |
da8e1115 | 6857 | /* Add DESC to the set of keyboard input descriptors. */ |
a69281ff RS |
6858 | |
6859 | void | |
6860 | add_keyboard_wait_descriptor (desc) | |
6861 | int desc; | |
6862 | { | |
a69281ff | 6863 | FD_SET (desc, &input_wait_mask); |
b5dc1c83 | 6864 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
6865 | if (desc > max_keyboard_desc) |
6866 | max_keyboard_desc = desc; | |
6867 | } | |
6868 | ||
994d9841 NR |
6869 | static int add_gpm_wait_descriptor_called_flag; |
6870 | ||
6871 | void | |
6872 | add_gpm_wait_descriptor (desc) | |
6873 | int desc; | |
6874 | { | |
6875 | if (! add_gpm_wait_descriptor_called_flag) | |
6876 | FD_CLR (0, &input_wait_mask); | |
6877 | add_gpm_wait_descriptor_called_flag = 1; | |
6878 | FD_SET (desc, &input_wait_mask); | |
6879 | FD_SET (desc, &gpm_wait_mask); | |
6880 | if (desc > max_gpm_desc) | |
6881 | max_gpm_desc = desc; | |
6882 | } | |
6883 | ||
a69281ff RS |
6884 | /* From now on, do not expect DESC to give keyboard input. */ |
6885 | ||
6886 | void | |
6887 | delete_keyboard_wait_descriptor (desc) | |
6888 | int desc; | |
6889 | { | |
6890 | int fd; | |
6891 | int lim = max_keyboard_desc; | |
6892 | ||
6893 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 6894 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
6895 | |
6896 | if (desc == max_keyboard_desc) | |
6897 | for (fd = 0; fd < lim; fd++) | |
6898 | if (FD_ISSET (fd, &input_wait_mask) | |
994d9841 NR |
6899 | && !FD_ISSET (fd, &non_keyboard_wait_mask) |
6900 | && !FD_ISSET (fd, &gpm_wait_mask)) | |
a69281ff RS |
6901 | max_keyboard_desc = fd; |
6902 | } | |
6903 | ||
994d9841 NR |
6904 | void |
6905 | delete_gpm_wait_descriptor (desc) | |
6906 | int desc; | |
6907 | { | |
6908 | int fd; | |
6909 | int lim = max_gpm_desc; | |
6910 | ||
6911 | FD_CLR (desc, &input_wait_mask); | |
6912 | FD_CLR (desc, &non_process_wait_mask); | |
6913 | ||
6914 | if (desc == max_gpm_desc) | |
6915 | for (fd = 0; fd < lim; fd++) | |
6916 | if (FD_ISSET (fd, &input_wait_mask) | |
6917 | && !FD_ISSET (fd, &non_keyboard_wait_mask) | |
6918 | && !FD_ISSET (fd, &non_process_wait_mask)) | |
6919 | max_gpm_desc = fd; | |
6920 | } | |
6921 | ||
a69281ff RS |
6922 | /* Return nonzero if *MASK has a bit set |
6923 | that corresponds to one of the keyboard input descriptors. */ | |
6924 | ||
ff6daed3 | 6925 | static int |
a69281ff RS |
6926 | keyboard_bit_set (mask) |
6927 | SELECT_TYPE *mask; | |
6928 | { | |
6929 | int fd; | |
6930 | ||
ee8e09af | 6931 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
6932 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6933 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6934 | return 1; | |
6935 | ||
6936 | return 0; | |
6937 | } | |
6938 | \f | |
dfcf069d | 6939 | void |
d0d6b7c5 JB |
6940 | init_process () |
6941 | { | |
6942 | register int i; | |
6943 | ||
84af9896 RS |
6944 | inhibit_sentinels = 0; |
6945 | ||
d0d6b7c5 JB |
6946 | #ifdef SIGCHLD |
6947 | #ifndef CANNOT_DUMP | |
6948 | if (! noninteractive || initialized) | |
6949 | #endif | |
6950 | signal (SIGCHLD, sigchld_handler); | |
6951 | #endif | |
6952 | ||
6953 | FD_ZERO (&input_wait_mask); | |
a69281ff | 6954 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 6955 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 6956 | max_process_desc = 0; |
dd2281ae | 6957 | |
bad49fc7 KS |
6958 | #ifdef NON_BLOCKING_CONNECT |
6959 | FD_ZERO (&connect_wait_mask); | |
6960 | num_pending_connects = 0; | |
6961 | #endif | |
6962 | ||
6b61353c KH |
6963 | #ifdef ADAPTIVE_READ_BUFFERING |
6964 | process_output_delay_count = 0; | |
6965 | process_output_skip = 0; | |
6966 | #endif | |
6967 | ||
c0707982 KL |
6968 | /* Don't do this, it caused infinite select loops. The display |
6969 | method should call add_keyboard_wait_descriptor on stdin if it | |
6970 | needs that. */ | |
6971 | #if 0 | |
a69281ff | 6972 | FD_SET (0, &input_wait_mask); |
c0707982 | 6973 | #endif |
dd2281ae | 6974 | |
d0d6b7c5 | 6975 | Vprocess_alist = Qnil; |
a5cfdda8 KS |
6976 | #ifdef SIGCHLD |
6977 | deleted_pid_list = Qnil; | |
6978 | #endif | |
d0d6b7c5 JB |
6979 | for (i = 0; i < MAXDESC; i++) |
6980 | { | |
6981 | chan_process[i] = Qnil; | |
6982 | proc_buffered_char[i] = -1; | |
6983 | } | |
c7580538 KH |
6984 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
6985 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
6986 | #ifdef DATAGRAM_SOCKETS |
6987 | bzero (datagram_address, sizeof datagram_address); | |
6988 | #endif | |
9057ff80 | 6989 | |
c2bd2c26 KS |
6990 | #ifdef HAVE_SOCKETS |
6991 | { | |
6992 | Lisp_Object subfeatures = Qnil; | |
6b61353c KH |
6993 | struct socket_options *sopt; |
6994 | ||
9057ff80 KS |
6995 | #define ADD_SUBFEATURE(key, val) \ |
6996 | subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures) | |
6997 | ||
9057ff80 | 6998 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 6999 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
7000 | #endif |
7001 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 7002 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 KS |
7003 | #endif |
7004 | #ifdef HAVE_LOCAL_SOCKETS | |
c2bd2c26 | 7005 | ADD_SUBFEATURE (QCfamily, Qlocal); |
e1652a86 KS |
7006 | #endif |
7007 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7008 | #ifdef AF_INET6 | |
7009 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
9057ff80 KS |
7010 | #endif |
7011 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 7012 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 7013 | #endif |
a8e8ea61 | 7014 | #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY)) |
c2bd2c26 | 7015 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 7016 | #endif |
6b61353c KH |
7017 | |
7018 | for (sopt = socket_options; sopt->name; sopt++) | |
7019 | subfeatures = Fcons (intern (sopt->name), subfeatures); | |
7020 | ||
c2bd2c26 KS |
7021 | Fprovide (intern ("make-network-process"), subfeatures); |
7022 | } | |
7023 | #endif /* HAVE_SOCKETS */ | |
d9e7c622 | 7024 | |
ecc175e2 | 7025 | #if defined (DARWIN) || defined (MAC_OSX) |
db853b7a | 7026 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive |
d9e7c622 ST |
7027 | processes. As such, we only change the default value. */ |
7028 | if (initialized) | |
7029 | { | |
7030 | char *release = get_operating_system_release(); | |
7031 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION | |
7032 | && release[1] == '.')) { | |
7033 | Vprocess_connection_type = Qnil; | |
7034 | } | |
7035 | } | |
7036 | #endif | |
d0d6b7c5 | 7037 | } |
312c9964 | 7038 | |
dfcf069d | 7039 | void |
d0d6b7c5 JB |
7040 | syms_of_process () |
7041 | { | |
d0d6b7c5 JB |
7042 | Qprocessp = intern ("processp"); |
7043 | staticpro (&Qprocessp); | |
7044 | Qrun = intern ("run"); | |
7045 | staticpro (&Qrun); | |
7046 | Qstop = intern ("stop"); | |
7047 | staticpro (&Qstop); | |
324e68ba KS |
7048 | Qsignal = intern ("signal"); |
7049 | staticpro (&Qsignal); | |
d0d6b7c5 JB |
7050 | |
7051 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7052 | here again. | |
7053 | ||
7054 | Qexit = intern ("exit"); | |
7055 | staticpro (&Qexit); */ | |
7056 | ||
7057 | Qopen = intern ("open"); | |
7058 | staticpro (&Qopen); | |
7059 | Qclosed = intern ("closed"); | |
7060 | staticpro (&Qclosed); | |
dd2a17ab KS |
7061 | Qconnect = intern ("connect"); |
7062 | staticpro (&Qconnect); | |
7063 | Qfailed = intern ("failed"); | |
7064 | staticpro (&Qfailed); | |
e690ca94 KS |
7065 | Qlisten = intern ("listen"); |
7066 | staticpro (&Qlisten); | |
7067 | Qlocal = intern ("local"); | |
7068 | staticpro (&Qlocal); | |
e1652a86 KS |
7069 | Qipv4 = intern ("ipv4"); |
7070 | staticpro (&Qipv4); | |
7071 | #ifdef AF_INET6 | |
7072 | Qipv6 = intern ("ipv6"); | |
7073 | staticpro (&Qipv6); | |
7074 | #endif | |
9057ff80 KS |
7075 | Qdatagram = intern ("datagram"); |
7076 | staticpro (&Qdatagram); | |
e690ca94 KS |
7077 | |
7078 | QCname = intern (":name"); | |
7079 | staticpro (&QCname); | |
7080 | QCbuffer = intern (":buffer"); | |
7081 | staticpro (&QCbuffer); | |
7082 | QChost = intern (":host"); | |
7083 | staticpro (&QChost); | |
7084 | QCservice = intern (":service"); | |
7085 | staticpro (&QCservice); | |
9057ff80 KS |
7086 | QCtype = intern (":type"); |
7087 | staticpro (&QCtype); | |
e690ca94 KS |
7088 | QClocal = intern (":local"); |
7089 | staticpro (&QClocal); | |
7090 | QCremote = intern (":remote"); | |
7091 | staticpro (&QCremote); | |
7092 | QCcoding = intern (":coding"); | |
7093 | staticpro (&QCcoding); | |
7094 | QCserver = intern (":server"); | |
7095 | staticpro (&QCserver); | |
e690ca94 KS |
7096 | QCnowait = intern (":nowait"); |
7097 | staticpro (&QCnowait); | |
e690ca94 KS |
7098 | QCsentinel = intern (":sentinel"); |
7099 | staticpro (&QCsentinel); | |
7100 | QClog = intern (":log"); | |
7101 | staticpro (&QClog); | |
7102 | QCnoquery = intern (":noquery"); | |
7103 | staticpro (&QCnoquery); | |
7104 | QCstop = intern (":stop"); | |
7105 | staticpro (&QCstop); | |
7106 | QCoptions = intern (":options"); | |
7107 | staticpro (&QCoptions); | |
faa7db08 KS |
7108 | QCplist = intern (":plist"); |
7109 | staticpro (&QCplist); | |
7392e23c KS |
7110 | QCfilter_multibyte = intern (":filter-multibyte"); |
7111 | staticpro (&QCfilter_multibyte); | |
177c0ea7 | 7112 | |
6545aada RS |
7113 | Qlast_nonmenu_event = intern ("last-nonmenu-event"); |
7114 | staticpro (&Qlast_nonmenu_event); | |
7115 | ||
d0d6b7c5 | 7116 | staticpro (&Vprocess_alist); |
a5cfdda8 KS |
7117 | #ifdef SIGCHLD |
7118 | staticpro (&deleted_pid_list); | |
7119 | #endif | |
d0d6b7c5 JB |
7120 | |
7121 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
fdb82f93 | 7122 | doc: /* *Non-nil means delete processes immediately when they exit. |
d4e83d5c | 7123 | A value of nil means don't delete them until `list-processes' is run. */); |
d0d6b7c5 JB |
7124 | |
7125 | delete_exited_processes = 1; | |
7126 | ||
7127 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
7128 | doc: /* Control type of device used to communicate with subprocesses. |
7129 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7130 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7131 | then a pipe is used in any case. | |
7132 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
7133 | Vprocess_connection_type = Qt; |
7134 | ||
6b61353c KH |
7135 | #ifdef ADAPTIVE_READ_BUFFERING |
7136 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
7137 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
f3d9532b | 7138 | On some systems, when Emacs reads the output from a subprocess, the output data |
6b61353c | 7139 | is read in very small blocks, potentially resulting in very poor performance. |
2de35a25 | 7140 | This behavior can be remedied to some extent by setting this variable to a |
6b61353c | 7141 | non-nil value, as it will automatically delay reading from such processes, to |
635a3496 | 7142 | allow them to produce more output before Emacs tries to read it. |
6b61353c KH |
7143 | If the value is t, the delay is reset after each write to the process; any other |
7144 | non-nil value means that the delay is not reset on write. | |
7145 | The variable takes effect when `start-process' is called. */); | |
7146 | Vprocess_adaptive_read_buffering = Qt; | |
7147 | #endif | |
7148 | ||
d0d6b7c5 JB |
7149 | defsubr (&Sprocessp); |
7150 | defsubr (&Sget_process); | |
7151 | defsubr (&Sget_buffer_process); | |
7152 | defsubr (&Sdelete_process); | |
7153 | defsubr (&Sprocess_status); | |
7154 | defsubr (&Sprocess_exit_status); | |
7155 | defsubr (&Sprocess_id); | |
7156 | defsubr (&Sprocess_name); | |
3b9a3dfa | 7157 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
7158 | defsubr (&Sprocess_command); |
7159 | defsubr (&Sset_process_buffer); | |
7160 | defsubr (&Sprocess_buffer); | |
7161 | defsubr (&Sprocess_mark); | |
7162 | defsubr (&Sset_process_filter); | |
7163 | defsubr (&Sprocess_filter); | |
7164 | defsubr (&Sset_process_sentinel); | |
7165 | defsubr (&Sprocess_sentinel); | |
de282a05 | 7166 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
7167 | defsubr (&Sset_process_inherit_coding_system_flag); |
7168 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
7169 | defsubr (&Sset_process_query_on_exit_flag); |
7170 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 7171 | defsubr (&Sprocess_contact); |
faa7db08 KS |
7172 | defsubr (&Sprocess_plist); |
7173 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
7174 | defsubr (&Slist_processes); |
7175 | defsubr (&Sprocess_list); | |
7176 | defsubr (&Sstart_process); | |
7177 | #ifdef HAVE_SOCKETS | |
6b61353c | 7178 | defsubr (&Sset_network_process_option); |
e690ca94 | 7179 | defsubr (&Smake_network_process); |
991234f0 | 7180 | defsubr (&Sformat_network_address); |
d0d6b7c5 | 7181 | #endif /* HAVE_SOCKETS */ |
6b61353c KH |
7182 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
7183 | #ifdef SIOCGIFCONF | |
7184 | defsubr (&Snetwork_interface_list); | |
7185 | #endif | |
7186 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
7187 | defsubr (&Snetwork_interface_info); | |
7188 | #endif | |
7189 | #endif /* HAVE_SOCKETS ... */ | |
e690ca94 KS |
7190 | #ifdef DATAGRAM_SOCKETS |
7191 | defsubr (&Sprocess_datagram_address); | |
7192 | defsubr (&Sset_process_datagram_address); | |
7193 | #endif | |
d0d6b7c5 JB |
7194 | defsubr (&Saccept_process_output); |
7195 | defsubr (&Sprocess_send_region); | |
7196 | defsubr (&Sprocess_send_string); | |
7197 | defsubr (&Sinterrupt_process); | |
7198 | defsubr (&Skill_process); | |
7199 | defsubr (&Squit_process); | |
7200 | defsubr (&Sstop_process); | |
7201 | defsubr (&Scontinue_process); | |
b81ea5ef | 7202 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
7203 | defsubr (&Sprocess_send_eof); |
7204 | defsubr (&Ssignal_process); | |
7205 | defsubr (&Swaiting_for_user_input_p); | |
7206 | /* defsubr (&Sprocess_connection); */ | |
0fa1789e KH |
7207 | defsubr (&Sset_process_coding_system); |
7208 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
7209 | defsubr (&Sset_process_filter_multibyte); |
7210 | defsubr (&Sprocess_filter_multibyte_p); | |
d0d6b7c5 JB |
7211 | } |
7212 | ||
6720a7fb JB |
7213 | \f |
7214 | #else /* not subprocesses */ | |
7215 | ||
7216 | #include <sys/types.h> | |
7217 | #include <errno.h> | |
7218 | ||
7219 | #include "lisp.h" | |
7220 | #include "systime.h" | |
5bbf78c1 | 7221 | #include "character.h" |
52a1b894 | 7222 | #include "coding.h" |
6720a7fb | 7223 | #include "termopts.h" |
81afb6d1 | 7224 | #include "sysselect.h" |
6720a7fb | 7225 | |
ff11dfa1 | 7226 | extern int frame_garbaged; |
6720a7fb | 7227 | |
f694e5d2 KH |
7228 | extern EMACS_TIME timer_check (); |
7229 | extern int timers_run; | |
6720a7fb | 7230 | |
9057ff80 KS |
7231 | Lisp_Object QCtype; |
7232 | ||
6720a7fb JB |
7233 | /* As described above, except assuming that there are no subprocesses: |
7234 | ||
7235 | Wait for timeout to elapse and/or keyboard input to be available. | |
7236 | ||
7237 | time_limit is: | |
7238 | timeout in seconds, or | |
7239 | zero for no limit, or | |
7240 | -1 means gobble data immediately available but don't wait for any. | |
7241 | ||
f76475ad | 7242 | read_kbd is a Lisp_Object: |
6720a7fb JB |
7243 | 0 to ignore keyboard input, or |
7244 | 1 to return when input is available, or | |
7245 | -1 means caller will actually read the input, so don't throw to | |
7246 | the quit handler. | |
b89a415a KS |
7247 | |
7248 | see full version for other parameters. We know that wait_proc will | |
7249 | always be NULL, since `subprocesses' isn't defined. | |
6720a7fb JB |
7250 | |
7251 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 7252 | output that arrives. |
6720a7fb | 7253 | |
e0f24100 | 7254 | Return true if we received input from any process. */ |
6720a7fb JB |
7255 | |
7256 | int | |
214d6069 KS |
7257 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
7258 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
7259 | int time_limit, microsecs, read_kbd, do_display; |
7260 | Lisp_Object wait_for_cell; | |
7261 | struct Lisp_Process *wait_proc; | |
7262 | int just_wait_proc; | |
6720a7fb | 7263 | { |
52fd88d3 | 7264 | register int nfds; |
f694e5d2 | 7265 | EMACS_TIME end_time, timeout; |
8db121c4 | 7266 | SELECT_TYPE waitchannels; |
f694e5d2 | 7267 | int xerrno; |
6720a7fb JB |
7268 | |
7269 | /* What does time_limit really mean? */ | |
7270 | if (time_limit || microsecs) | |
7271 | { | |
6720a7fb | 7272 | EMACS_GET_TIME (end_time); |
52fd88d3 | 7273 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
7274 | EMACS_ADD_TIME (end_time, end_time, timeout); |
7275 | } | |
6720a7fb JB |
7276 | |
7277 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 7278 | and then turn off any other atimers, |
6720a7fb | 7279 | because the select emulator uses alarms. */ |
75eb23f1 | 7280 | stop_polling (); |
30904ab7 | 7281 | turn_on_atimers (0); |
6720a7fb | 7282 | |
52fd88d3 | 7283 | while (1) |
6720a7fb | 7284 | { |
bae8d137 | 7285 | int timeout_reduced_for_timers = 0; |
6720a7fb | 7286 | |
6720a7fb JB |
7287 | /* If calling from keyboard input, do not quit |
7288 | since we want to return C-g as an input character. | |
7289 | Otherwise, do pending quit if requested. */ | |
b89a415a | 7290 | if (read_kbd >= 0) |
6720a7fb JB |
7291 | QUIT; |
7292 | ||
0a65b032 | 7293 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7294 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
7295 | break; |
7296 | ||
bae8d137 RS |
7297 | /* Compute time from now till when time limit is up */ |
7298 | /* Exit if already run out */ | |
52fd88d3 EZ |
7299 | if (time_limit == -1) |
7300 | { | |
7301 | /* -1 specified for timeout means | |
7302 | gobble output available now | |
7303 | but don't wait at all. */ | |
7304 | ||
7305 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
7306 | } | |
7307 | else if (time_limit || microsecs) | |
6720a7fb | 7308 | { |
f694e5d2 KH |
7309 | EMACS_GET_TIME (timeout); |
7310 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
7311 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
7312 | break; |
7313 | } | |
52fd88d3 EZ |
7314 | else |
7315 | { | |
7316 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
7317 | } | |
6720a7fb | 7318 | |
bae8d137 RS |
7319 | /* If our caller will not immediately handle keyboard events, |
7320 | run timer events directly. | |
7321 | (Callers that will immediately read keyboard events | |
7322 | call timer_delay on their own.) */ | |
f3fbd155 | 7323 | if (NILP (wait_for_cell)) |
bae8d137 RS |
7324 | { |
7325 | EMACS_TIME timer_delay; | |
0a65b032 | 7326 | |
9baacf76 | 7327 | do |
0a65b032 | 7328 | { |
9baacf76 GM |
7329 | int old_timers_run = timers_run; |
7330 | timer_delay = timer_check (1); | |
7331 | if (timers_run != old_timers_run && do_display) | |
7332 | /* We must retry, since a timer may have requeued itself | |
7333 | and that could alter the time delay. */ | |
3007ebfb | 7334 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
7335 | else |
7336 | break; | |
0a65b032 | 7337 | } |
9baacf76 | 7338 | while (!detect_input_pending ()); |
0a65b032 | 7339 | |
52fd88d3 | 7340 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7341 | if (read_kbd != 0 |
52fd88d3 EZ |
7342 | && requeued_events_pending_p ()) |
7343 | break; | |
7344 | ||
f694e5d2 | 7345 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
7346 | { |
7347 | EMACS_TIME difference; | |
f694e5d2 | 7348 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
7349 | if (EMACS_TIME_NEG_P (difference)) |
7350 | { | |
f694e5d2 | 7351 | timeout = timer_delay; |
bae8d137 RS |
7352 | timeout_reduced_for_timers = 1; |
7353 | } | |
7354 | } | |
7355 | } | |
7356 | ||
6720a7fb JB |
7357 | /* Cause C-g and alarm signals to take immediate action, |
7358 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7359 | if (read_kbd < 0) |
6720a7fb JB |
7360 | set_waiting_for_input (&timeout); |
7361 | ||
0a65b032 RS |
7362 | /* Wait till there is something to do. */ |
7363 | ||
b89a415a | 7364 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
7365 | FD_ZERO (&waitchannels); |
7366 | else | |
7367 | FD_SET (0, &waitchannels); | |
7368 | ||
ff11dfa1 | 7369 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7370 | reprocess its display stuff. */ |
5164ee8e | 7371 | if (frame_garbaged && do_display) |
0a65b032 RS |
7372 | { |
7373 | clear_waiting_for_input (); | |
3007ebfb | 7374 | redisplay_preserve_echo_area (15); |
b89a415a | 7375 | if (read_kbd < 0) |
0a65b032 RS |
7376 | set_waiting_for_input (&timeout); |
7377 | } | |
6720a7fb | 7378 | |
b89a415a | 7379 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
7380 | { |
7381 | nfds = 0; | |
7382 | FD_ZERO (&waitchannels); | |
7383 | } | |
7384 | else | |
7385 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7386 | &timeout); | |
f694e5d2 KH |
7387 | |
7388 | xerrno = errno; | |
6720a7fb JB |
7389 | |
7390 | /* Make C-g and alarm signals set flags again */ | |
7391 | clear_waiting_for_input (); | |
7392 | ||
7393 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7394 | do_pending_window_change (0); |
6720a7fb | 7395 | |
f694e5d2 KH |
7396 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7397 | /* We waited the full specified time, so return now. */ | |
7398 | break; | |
7399 | ||
6720a7fb JB |
7400 | if (nfds == -1) |
7401 | { | |
7402 | /* If the system call was interrupted, then go around the | |
7403 | loop again. */ | |
f694e5d2 | 7404 | if (xerrno == EINTR) |
8db121c4 | 7405 | FD_ZERO (&waitchannels); |
f694e5d2 | 7406 | else |
68c45bf0 | 7407 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb JB |
7408 | } |
7409 | #ifdef sun | |
7410 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) | |
7411 | /* System sometimes fails to deliver SIGIO. */ | |
7412 | kill (getpid (), SIGIO); | |
7413 | #endif | |
7324d660 | 7414 | #ifdef SIGIO |
b89a415a | 7415 | if (read_kbd && interrupt_input && (waitchannels & 1)) |
e643c5be | 7416 | kill (getpid (), SIGIO); |
7324d660 | 7417 | #endif |
6720a7fb | 7418 | |
f694e5d2 KH |
7419 | /* Check for keyboard input */ |
7420 | ||
b89a415a | 7421 | if (read_kbd |
78c1afb6 | 7422 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7423 | { |
78c1afb6 | 7424 | swallow_events (do_display); |
f694e5d2 | 7425 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7426 | break; |
78c1afb6 EZ |
7427 | } |
7428 | ||
52fd88d3 | 7429 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7430 | if (read_kbd |
52fd88d3 EZ |
7431 | && requeued_events_pending_p ()) |
7432 | break; | |
7433 | ||
f854a00b RS |
7434 | /* If wait_for_cell. check for keyboard input |
7435 | but don't run any timers. | |
7436 | ??? (It seems wrong to me to check for keyboard | |
7437 | input at all when wait_for_cell, but the code | |
7438 | has been this way since July 1994. | |
7439 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7440 | if (! NILP (wait_for_cell) |
f854a00b RS |
7441 | && detect_input_pending ()) |
7442 | { | |
7443 | swallow_events (do_display); | |
7444 | if (detect_input_pending ()) | |
7445 | break; | |
7446 | } | |
7447 | ||
0a65b032 | 7448 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7449 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7450 | break; |
6720a7fb JB |
7451 | } |
7452 | ||
a87b802f JB |
7453 | start_polling (); |
7454 | ||
6720a7fb JB |
7455 | return 0; |
7456 | } | |
7457 | ||
7458 | ||
e2ba787b PJ |
7459 | /* Don't confuse make-docfile by having two doc strings for this function. |
7460 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 7461 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
7462 | 0) |
7463 | (name) | |
6720a7fb JB |
7464 | register Lisp_Object name; |
7465 | { | |
7466 | return Qnil; | |
7467 | } | |
7468 | ||
e2ba787b PJ |
7469 | /* Don't confuse make-docfile by having two doc strings for this function. |
7470 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 7471 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7472 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7473 | 1, 1, 0, | |
7474 | 0) | |
7475 | (process) | |
52a1b894 EZ |
7476 | register Lisp_Object process; |
7477 | { | |
7478 | /* Ignore the argument and return the value of | |
7479 | inherit-process-coding-system. */ | |
7480 | return inherit_process_coding_system ? Qt : Qnil; | |
7481 | } | |
7482 | ||
6720a7fb JB |
7483 | /* Kill all processes associated with `buffer'. |
7484 | If `buffer' is nil, kill all processes. | |
7485 | Since we have no subprocesses, this does nothing. */ | |
7486 | ||
d9bb0c32 | 7487 | void |
6720a7fb JB |
7488 | kill_buffer_processes (buffer) |
7489 | Lisp_Object buffer; | |
7490 | { | |
7491 | } | |
7492 | ||
02b9b4fd | 7493 | void |
6720a7fb JB |
7494 | init_process () |
7495 | { | |
7496 | } | |
7497 | ||
02b9b4fd | 7498 | void |
6720a7fb JB |
7499 | syms_of_process () |
7500 | { | |
9057ff80 KS |
7501 | QCtype = intern (":type"); |
7502 | staticpro (&QCtype); | |
7503 | ||
6720a7fb | 7504 | defsubr (&Sget_buffer_process); |
52a1b894 | 7505 | defsubr (&Sprocess_inherit_coding_system_flag); |
6720a7fb JB |
7506 | } |
7507 | ||
7508 | \f | |
7509 | #endif /* not subprocesses */ | |
6b61353c KH |
7510 | |
7511 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
7512 | (do not change this comment) */ |