Commit | Line | Data |
---|---|---|
d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
dd2a17ab | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95, 96, 98, 1999, |
34967d0f | 3 | 2001, 2002, 2003 Free Software Foundation, Inc. |
d0d6b7c5 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
1dc77cc3 | 9 | the Free Software Foundation; either version 2, or (at your option) |
d0d6b7c5 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
d0d6b7c5 JB |
21 | |
22 | ||
18160b98 | 23 | #include <config.h> |
68c45bf0 PE |
24 | #include <signal.h> |
25 | ||
6720a7fb JB |
26 | /* This file is split into two parts by the following preprocessor |
27 | conditional. The 'then' clause contains all of the support for | |
28 | asynchronous subprocesses. The 'else' clause contains stub | |
29 | versions of some of the asynchronous subprocess routines that are | |
30 | often called elsewhere in Emacs, so we don't have to #ifdef the | |
31 | sections that call them. */ | |
32 | ||
33 | \f | |
d0d6b7c5 | 34 | #ifdef subprocesses |
d0d6b7c5 JB |
35 | |
36 | #include <stdio.h> | |
37 | #include <errno.h> | |
38 | #include <setjmp.h> | |
39 | #include <sys/types.h> /* some typedefs are used in sys/file.h */ | |
40 | #include <sys/file.h> | |
41 | #include <sys/stat.h> | |
93b4f699 RS |
42 | #ifdef HAVE_UNISTD_H |
43 | #include <unistd.h> | |
44 | #endif | |
d0d6b7c5 | 45 | |
f22ac298 | 46 | #if defined(WINDOWSNT) || defined(UNIX98_PTYS) |
e98d950b RS |
47 | #include <stdlib.h> |
48 | #include <fcntl.h> | |
49 | #endif /* not WINDOWSNT */ | |
50 | ||
d0d6b7c5 JB |
51 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
52 | #include <sys/socket.h> | |
53 | #include <netdb.h> | |
54 | #include <netinet/in.h> | |
55 | #include <arpa/inet.h> | |
f2cfa9a6 RS |
56 | #ifdef NEED_NET_ERRNO_H |
57 | #include <net/errno.h> | |
58 | #endif /* NEED_NET_ERRNO_H */ | |
e690ca94 KS |
59 | |
60 | /* Are local (unix) sockets supported? */ | |
28c6e94f | 61 | #if defined (HAVE_SYS_UN_H) && !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
e690ca94 KS |
62 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
63 | #define AF_LOCAL AF_UNIX | |
64 | #endif | |
65 | #ifdef AF_LOCAL | |
66 | #define HAVE_LOCAL_SOCKETS | |
67 | #include <sys/un.h> | |
68 | #endif | |
69 | #endif | |
d0d6b7c5 JB |
70 | #endif /* HAVE_SOCKETS */ |
71 | ||
827a1788 | 72 | /* TERM is a poor-man's SLIP, used on GNU/Linux. */ |
1d2c16fa RS |
73 | #ifdef TERM |
74 | #include <client.h> | |
75 | #endif | |
76 | ||
cf32fea0 PR |
77 | /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */ |
78 | #ifdef HAVE_BROKEN_INET_ADDR | |
79967d5e RS |
79 | #define IN_ADDR struct in_addr |
80 | #define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1) | |
81 | #else | |
82 | #define IN_ADDR unsigned long | |
83 | #define NUMERIC_ADDR_ERROR (numeric_addr == -1) | |
84 | #endif | |
85 | ||
6df54671 | 86 | #if defined(BSD_SYSTEM) || defined(STRIDE) |
d0d6b7c5 | 87 | #include <sys/ioctl.h> |
0ad77c54 | 88 | #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5) |
d0d6b7c5 JB |
89 | #include <fcntl.h> |
90 | #endif /* HAVE_PTYS and no O_NDELAY */ | |
6df54671 | 91 | #endif /* BSD_SYSTEM || STRIDE */ |
d0d6b7c5 | 92 | |
99e3d726 RS |
93 | #ifdef BROKEN_O_NONBLOCK |
94 | #undef O_NONBLOCK | |
95 | #endif /* BROKEN_O_NONBLOCK */ | |
96 | ||
d0d6b7c5 JB |
97 | #ifdef NEED_BSDTTY |
98 | #include <bsdtty.h> | |
99 | #endif | |
100 | ||
161933c7 KS |
101 | /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */ |
102 | #ifdef HAVE_SOCKETS | |
103 | #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H) | |
104 | /* sys/ioctl.h may have been included already */ | |
105 | #ifndef SIOCGIFADDR | |
106 | #include <sys/ioctl.h> | |
107 | #endif | |
108 | #include <net/if.h> | |
109 | #endif | |
110 | #endif | |
111 | ||
d0d6b7c5 JB |
112 | #ifdef IRIS |
113 | #include <sys/sysmacros.h> /* for "minor" */ | |
114 | #endif /* not IRIS */ | |
177c0ea7 | 115 | |
e62cab61 DL |
116 | #ifdef HAVE_SYS_WAIT |
117 | #include <sys/wait.h> | |
118 | #endif | |
d0d6b7c5 JB |
119 | |
120 | #include "systime.h" | |
36ebaafa | 121 | #include "systty.h" |
d0d6b7c5 JB |
122 | |
123 | #include "lisp.h" | |
124 | #include "window.h" | |
125 | #include "buffer.h" | |
0fa1789e KH |
126 | #include "charset.h" |
127 | #include "coding.h" | |
d0d6b7c5 JB |
128 | #include "process.h" |
129 | #include "termhooks.h" | |
130 | #include "termopts.h" | |
131 | #include "commands.h" | |
3ec68006 | 132 | #include "keyboard.h" |
1dc77cc3 | 133 | #include "frame.h" |
ececcbec | 134 | #include "blockinput.h" |
dfcf069d | 135 | #include "dispextern.h" |
e0016554 | 136 | #include "composite.h" |
30904ab7 | 137 | #include "atimer.h" |
d0d6b7c5 | 138 | |
dd2281ae | 139 | Lisp_Object Qprocessp; |
dd2a17ab | 140 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 141 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
9057ff80 KS |
142 | Lisp_Object Qlocal, Qdatagram; |
143 | Lisp_Object QCname, QCbuffer, QChost, QCservice, QCtype; | |
e690ca94 | 144 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 145 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 146 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
7392e23c | 147 | Lisp_Object QCfilter_multibyte; |
6545aada | 148 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
149 | /* QCfamily is declared and initialized in xfaces.c, |
150 | QCfilter in keyboard.c. */ | |
151 | extern Lisp_Object QCfamily, QCfilter; | |
152 | ||
d0d6b7c5 JB |
153 | /* Qexit is declared and initialized in eval.c. */ |
154 | ||
e0f712ba AC |
155 | /* QCfamily is defined in xfaces.c. */ |
156 | extern Lisp_Object QCfamily; | |
157 | /* QCfilter is defined in keyboard.c. */ | |
158 | extern Lisp_Object QCfilter; | |
159 | ||
d0d6b7c5 | 160 | /* a process object is a network connection when its childp field is neither |
365aee82 | 161 | Qt nor Qnil but is instead a property list (KEY VAL ...). */ |
d0d6b7c5 JB |
162 | |
163 | #ifdef HAVE_SOCKETS | |
de282a05 | 164 | #define NETCONN_P(p) (GC_CONSP (XPROCESS (p)->childp)) |
e690ca94 | 165 | #define NETCONN1_P(p) (GC_CONSP ((p)->childp)) |
d0d6b7c5 JB |
166 | #else |
167 | #define NETCONN_P(p) 0 | |
e690ca94 | 168 | #define NETCONN1_P(p) 0 |
d0d6b7c5 JB |
169 | #endif /* HAVE_SOCKETS */ |
170 | ||
171 | /* Define first descriptor number available for subprocesses. */ | |
172 | #ifdef VMS | |
173 | #define FIRST_PROC_DESC 1 | |
174 | #else /* Not VMS */ | |
175 | #define FIRST_PROC_DESC 3 | |
176 | #endif | |
177 | ||
178 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
179 | testing SIGCHLD. */ | |
180 | ||
181 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
182 | #define SIGCHLD SIGCLD | |
183 | #endif /* SIGCLD */ | |
184 | ||
185 | #include "syssignal.h" | |
186 | ||
889255b4 | 187 | #include "syswait.h" |
d0d6b7c5 | 188 | |
41d03b9a GM |
189 | extern void set_waiting_for_input P_ ((EMACS_TIME *)); |
190 | ||
3ec68006 | 191 | #ifndef USE_CRT_DLL |
b062d1fe | 192 | extern int errno; |
3ec68006 | 193 | #endif |
b062d1fe | 194 | #ifdef VMS |
d0d6b7c5 | 195 | extern char *sys_errlist[]; |
b062d1fe | 196 | #endif |
d0d6b7c5 | 197 | |
5f0929a7 RS |
198 | #ifndef HAVE_H_ERRNO |
199 | extern int h_errno; | |
200 | #endif | |
201 | ||
d0d6b7c5 JB |
202 | /* t means use pty, nil means use a pipe, |
203 | maybe other values to come. */ | |
dd2281ae | 204 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 JB |
205 | |
206 | #ifdef SKTPAIR | |
207 | #ifndef HAVE_SOCKETS | |
208 | #include <sys/socket.h> | |
209 | #endif | |
210 | #endif /* SKTPAIR */ | |
211 | ||
17d02632 KH |
212 | /* These next two vars are non-static since sysdep.c uses them in the |
213 | emulation of `select'. */ | |
d0d6b7c5 | 214 | /* Number of events of change of status of a process. */ |
17d02632 | 215 | int process_tick; |
d0d6b7c5 | 216 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 217 | int update_tick; |
d0d6b7c5 | 218 | |
dd2a17ab KS |
219 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
220 | ||
221 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
222 | #undef NON_BLOCKING_CONNECT | |
223 | #else | |
224 | #ifndef NON_BLOCKING_CONNECT | |
225 | #ifdef HAVE_SOCKETS | |
226 | #ifdef HAVE_SELECT | |
227 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
228 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
229 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
230 | #define NON_BLOCKING_CONNECT | |
231 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
232 | #endif /* O_NONBLOCK || O_NDELAY */ | |
233 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
234 | #endif /* HAVE_SELECT */ | |
235 | #endif /* HAVE_SOCKETS */ | |
236 | #endif /* NON_BLOCKING_CONNECT */ | |
237 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
238 | ||
e690ca94 KS |
239 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
240 | this system. We need to read full packets, so we need a | |
241 | "non-destructive" select. So we require either native select, | |
242 | or emulation of select using FIONREAD. */ | |
243 | ||
e690ca94 KS |
244 | #ifdef BROKEN_DATAGRAM_SOCKETS |
245 | #undef DATAGRAM_SOCKETS | |
246 | #else | |
247 | #ifndef DATAGRAM_SOCKETS | |
248 | #ifdef HAVE_SOCKETS | |
249 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
250 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
251 | #define DATAGRAM_SOCKETS | |
252 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
253 | #endif /* HAVE_SELECT || FIONREAD */ | |
254 | #endif /* HAVE_SOCKETS */ | |
255 | #endif /* DATAGRAM_SOCKETS */ | |
256 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
257 | ||
dd2a17ab KS |
258 | #ifdef TERM |
259 | #undef NON_BLOCKING_CONNECT | |
e690ca94 | 260 | #undef DATAGRAM_SOCKETS |
dd2a17ab KS |
261 | #endif |
262 | ||
e690ca94 | 263 | |
5886acf9 | 264 | #include "sysselect.h" |
d0d6b7c5 | 265 | |
41d03b9a GM |
266 | extern int keyboard_bit_set P_ ((SELECT_TYPE *)); |
267 | ||
583dcae4 | 268 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 269 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 270 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
271 | #define POLL_FOR_INPUT |
272 | #endif | |
273 | ||
a69281ff | 274 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 275 | |
dd2281ae RS |
276 | static SELECT_TYPE input_wait_mask; |
277 | ||
a69281ff RS |
278 | /* Mask that excludes keyboard input descriptor (s). */ |
279 | ||
280 | static SELECT_TYPE non_keyboard_wait_mask; | |
281 | ||
b5dc1c83 RS |
282 | /* Mask that excludes process input descriptor (s). */ |
283 | ||
284 | static SELECT_TYPE non_process_wait_mask; | |
285 | ||
dd2a17ab KS |
286 | /* Mask of bits indicating the descriptors that we wait for connect to |
287 | complete on. Once they complete, they are removed from this mask | |
288 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
289 | ||
290 | static SELECT_TYPE connect_wait_mask; | |
291 | ||
292 | /* Number of bits set in connect_wait_mask. */ | |
293 | static int num_pending_connects; | |
294 | ||
7d0e672e RS |
295 | /* The largest descriptor currently in use for a process object. */ |
296 | static int max_process_desc; | |
297 | ||
a69281ff RS |
298 | /* The largest descriptor currently in use for keyboard input. */ |
299 | static int max_keyboard_desc; | |
d0d6b7c5 | 300 | |
dd2281ae RS |
301 | /* Nonzero means delete a process right away if it exits. */ |
302 | static int delete_exited_processes; | |
d0d6b7c5 JB |
303 | |
304 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 305 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
306 | |
307 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 308 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
309 | |
310 | /* Buffered-ahead input char from process, indexed by channel. | |
311 | -1 means empty (no char is buffered). | |
312 | Used on sys V where the only way to tell if there is any | |
313 | output from the process is to read at least one char. | |
314 | Always -1 on systems that support FIONREAD. */ | |
315 | ||
e98d950b RS |
316 | /* Don't make static; need to access externally. */ |
317 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 318 | |
0fa1789e | 319 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
320 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
321 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 322 | |
e690ca94 KS |
323 | #ifdef DATAGRAM_SOCKETS |
324 | /* Table of `partner address' for datagram sockets. */ | |
325 | struct sockaddr_and_len { | |
326 | struct sockaddr *sa; | |
327 | int len; | |
328 | } datagram_address[MAXDESC]; | |
329 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
bed9664a | 330 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0) |
e690ca94 KS |
331 | #else |
332 | #define DATAGRAM_CHAN_P(chan) (0) | |
333 | #define DATAGRAM_CONN_P(proc) (0) | |
334 | #endif | |
335 | ||
dd2281ae | 336 | static Lisp_Object get_process (); |
dd2a17ab | 337 | static void exec_sentinel (); |
93b4f699 | 338 | |
fb4c3627 | 339 | extern EMACS_TIME timer_check (); |
5de50bfb | 340 | extern int timers_run; |
fb4c3627 | 341 | |
93b4f699 RS |
342 | /* Maximum number of bytes to send to a pty without an eof. */ |
343 | static int pty_max_bytes; | |
3b9a3dfa | 344 | |
14dc6093 | 345 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
a932f187 | 346 | |
875e6b94 | 347 | #ifdef HAVE_PTYS |
e62cab61 DL |
348 | #ifdef HAVE_PTY_H |
349 | #include <pty.h> | |
350 | #endif | |
875e6b94 | 351 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
352 | |
353 | static char pty_name[24]; | |
875e6b94 | 354 | #endif |
d0d6b7c5 JB |
355 | \f |
356 | /* Compute the Lisp form of the process status, p->status, from | |
357 | the numeric status that was returned by `wait'. */ | |
358 | ||
f9738840 JB |
359 | Lisp_Object status_convert (); |
360 | ||
dfcf069d | 361 | void |
d0d6b7c5 JB |
362 | update_status (p) |
363 | struct Lisp_Process *p; | |
364 | { | |
365 | union { int i; WAITTYPE wt; } u; | |
366 | u.i = XFASTINT (p->raw_status_low) + (XFASTINT (p->raw_status_high) << 16); | |
367 | p->status = status_convert (u.wt); | |
368 | p->raw_status_low = Qnil; | |
369 | p->raw_status_high = Qnil; | |
370 | } | |
371 | ||
177c0ea7 | 372 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
373 | the list that we use internally. */ |
374 | ||
375 | Lisp_Object | |
376 | status_convert (w) | |
377 | WAITTYPE w; | |
378 | { | |
379 | if (WIFSTOPPED (w)) | |
380 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
381 | else if (WIFEXITED (w)) | |
382 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
383 | WCOREDUMP (w) ? Qt : Qnil)); | |
384 | else if (WIFSIGNALED (w)) | |
385 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
386 | WCOREDUMP (w) ? Qt : Qnil)); | |
387 | else | |
388 | return Qrun; | |
389 | } | |
390 | ||
391 | /* Given a status-list, extract the three pieces of information | |
392 | and store them individually through the three pointers. */ | |
393 | ||
394 | void | |
395 | decode_status (l, symbol, code, coredump) | |
396 | Lisp_Object l; | |
397 | Lisp_Object *symbol; | |
398 | int *code; | |
399 | int *coredump; | |
400 | { | |
401 | Lisp_Object tem; | |
402 | ||
bcd69aea | 403 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
404 | { |
405 | *symbol = l; | |
406 | *code = 0; | |
407 | *coredump = 0; | |
408 | } | |
409 | else | |
410 | { | |
70949dac KR |
411 | *symbol = XCAR (l); |
412 | tem = XCDR (l); | |
413 | *code = XFASTINT (XCAR (tem)); | |
414 | tem = XCDR (tem); | |
d0d6b7c5 JB |
415 | *coredump = !NILP (tem); |
416 | } | |
417 | } | |
418 | ||
419 | /* Return a string describing a process status list. */ | |
420 | ||
177c0ea7 | 421 | Lisp_Object |
d0d6b7c5 JB |
422 | status_message (status) |
423 | Lisp_Object status; | |
424 | { | |
425 | Lisp_Object symbol; | |
426 | int code, coredump; | |
427 | Lisp_Object string, string2; | |
428 | ||
429 | decode_status (status, &symbol, &code, &coredump); | |
430 | ||
431 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
432 | { | |
68c45bf0 | 433 | char *signame; |
ca9c0567 | 434 | synchronize_system_messages_locale (); |
68c45bf0 | 435 | signame = strsignal (code); |
b97ad9ea RS |
436 | if (signame == 0) |
437 | signame = "unknown"; | |
438 | string = build_string (signame); | |
d0d6b7c5 | 439 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
a814cc69 | 440 | SSET (string, 0, DOWNCASE (SREF (string, 0))); |
d0d6b7c5 JB |
441 | return concat2 (string, string2); |
442 | } | |
443 | else if (EQ (symbol, Qexit)) | |
444 | { | |
445 | if (code == 0) | |
446 | return build_string ("finished\n"); | |
f2980264 | 447 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 448 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
449 | return concat3 (build_string ("exited abnormally with code "), |
450 | string, string2); | |
d0d6b7c5 | 451 | } |
dd2a17ab KS |
452 | else if (EQ (symbol, Qfailed)) |
453 | { | |
454 | string = Fnumber_to_string (make_number (code)); | |
455 | string2 = build_string ("\n"); | |
e690ca94 KS |
456 | return concat3 (build_string ("failed with code "), |
457 | string, string2); | |
dd2a17ab | 458 | } |
d0d6b7c5 JB |
459 | else |
460 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
461 | } | |
462 | \f | |
463 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 464 | |
875e6b94 KH |
465 | /* Open an available pty, returning a file descriptor. |
466 | Return -1 on failure. | |
467 | The file name of the terminal corresponding to the pty | |
468 | is left in the variable pty_name. */ | |
469 | ||
d0d6b7c5 JB |
470 | int |
471 | allocate_pty () | |
472 | { | |
dfcf069d | 473 | register int c, i; |
d0d6b7c5 JB |
474 | int fd; |
475 | ||
476 | #ifdef PTY_ITERATION | |
477 | PTY_ITERATION | |
478 | #else | |
479 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
480 | for (i = 0; i < 16; i++) | |
481 | #endif | |
482 | { | |
26d7389d | 483 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
484 | #ifdef PTY_NAME_SPRINTF |
485 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
486 | #else |
487 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
488 | #endif /* no PTY_NAME_SPRINTF */ |
489 | ||
4d7c105e RS |
490 | #ifdef PTY_OPEN |
491 | PTY_OPEN; | |
492 | #else /* no PTY_OPEN */ | |
34967d0f | 493 | { |
34967d0f SM |
494 | # ifdef IRIS |
495 | /* Unusual IRIS code */ | |
496 | *ptyv = emacs_open ("/dev/ptc", O_RDWR | O_NDELAY, 0); | |
497 | if (fd < 0) | |
498 | return -1; | |
499 | if (fstat (fd, &stb) < 0) | |
500 | return -1; | |
501 | # else /* not IRIS */ | |
502 | { /* Some systems name their pseudoterminals so that there are gaps in | |
503 | the usual sequence - for example, on HP9000/S700 systems, there | |
504 | are no pseudoterminals with names ending in 'f'. So we wait for | |
505 | three failures in a row before deciding that we've reached the | |
506 | end of the ptys. */ | |
507 | int failed_count = 0; | |
508 | ||
509 | if (stat (pty_name, &stb) < 0) | |
510 | { | |
511 | failed_count++; | |
512 | if (failed_count >= 3) | |
513 | return -1; | |
514 | } | |
515 | else | |
516 | failed_count = 0; | |
32676c08 | 517 | } |
34967d0f SM |
518 | # ifdef O_NONBLOCK |
519 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
520 | # else | |
521 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
522 | # endif | |
523 | # endif /* not IRIS */ | |
524 | } | |
4d7c105e | 525 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
526 | |
527 | if (fd >= 0) | |
528 | { | |
529 | /* check to make certain that both sides are available | |
530 | this avoids a nasty yet stupid bug in rlogins */ | |
531 | #ifdef PTY_TTY_NAME_SPRINTF | |
532 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 JB |
533 | #else |
534 | sprintf (pty_name, "/dev/tty%c%x", c, i); | |
d0d6b7c5 JB |
535 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
536 | #ifndef UNIPLUS | |
537 | if (access (pty_name, 6) != 0) | |
538 | { | |
68c45bf0 | 539 | emacs_close (fd); |
34967d0f | 540 | # if !defined(IRIS) && !defined(__sgi) |
d0d6b7c5 | 541 | continue; |
34967d0f | 542 | # else |
d0d6b7c5 | 543 | return -1; |
34967d0f | 544 | # endif /* IRIS */ |
d0d6b7c5 JB |
545 | } |
546 | #endif /* not UNIPLUS */ | |
547 | setup_pty (fd); | |
548 | return fd; | |
549 | } | |
550 | } | |
551 | return -1; | |
552 | } | |
553 | #endif /* HAVE_PTYS */ | |
554 | \f | |
555 | Lisp_Object | |
556 | make_process (name) | |
557 | Lisp_Object name; | |
558 | { | |
559 | register Lisp_Object val, tem, name1; | |
560 | register struct Lisp_Process *p; | |
561 | char suffix[10]; | |
562 | register int i; | |
563 | ||
98423852 | 564 | p = allocate_process (); |
23d6bb9c | 565 | |
1d056e64 KH |
566 | XSETINT (p->infd, -1); |
567 | XSETINT (p->outfd, -1); | |
22719df2 KH |
568 | XSETFASTINT (p->pid, 0); |
569 | XSETFASTINT (p->tick, 0); | |
570 | XSETFASTINT (p->update_tick, 0); | |
d0d6b7c5 JB |
571 | p->raw_status_low = Qnil; |
572 | p->raw_status_high = Qnil; | |
573 | p->status = Qrun; | |
574 | p->mark = Fmake_marker (); | |
575 | ||
576 | /* If name is already in use, modify it until it is unused. */ | |
577 | ||
578 | name1 = name; | |
579 | for (i = 1; ; i++) | |
580 | { | |
581 | tem = Fget_process (name1); | |
582 | if (NILP (tem)) break; | |
583 | sprintf (suffix, "<%d>", i); | |
584 | name1 = concat2 (name, build_string (suffix)); | |
585 | } | |
586 | name = name1; | |
587 | p->name = name; | |
23d6bb9c | 588 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
589 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
590 | return val; | |
591 | } | |
592 | ||
dfcf069d | 593 | void |
d0d6b7c5 JB |
594 | remove_process (proc) |
595 | register Lisp_Object proc; | |
596 | { | |
597 | register Lisp_Object pair; | |
598 | ||
599 | pair = Frassq (proc, Vprocess_alist); | |
600 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
601 | |
602 | deactivate_process (proc); | |
603 | } | |
03f04413 KH |
604 | |
605 | /* Setup coding systems of PROCESS. */ | |
606 | ||
607 | void | |
608 | setup_process_coding_systems (process) | |
609 | Lisp_Object process; | |
610 | { | |
611 | struct Lisp_Process *p = XPROCESS (process); | |
612 | int inch = XINT (p->infd); | |
613 | int outch = XINT (p->outfd); | |
614 | ||
20f1ef2e KH |
615 | if (inch < 0 || outch < 0) |
616 | return; | |
617 | ||
03f04413 KH |
618 | if (!proc_decode_coding_system[inch]) |
619 | proc_decode_coding_system[inch] | |
620 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
621 | setup_coding_system (p->decode_coding_system, | |
622 | proc_decode_coding_system[inch]); | |
623 | if (! NILP (p->filter)) | |
624 | { | |
625 | if (NILP (p->filter_multibyte)) | |
626 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
627 | } | |
628 | else if (BUFFERP (p->buffer)) | |
629 | { | |
630 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
631 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
632 | } | |
633 | ||
634 | if (!proc_encode_coding_system[outch]) | |
635 | proc_encode_coding_system[outch] | |
636 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
637 | setup_coding_system (p->encode_coding_system, | |
638 | proc_encode_coding_system[outch]); | |
639 | } | |
d0d6b7c5 JB |
640 | \f |
641 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
642 | doc: /* Return t if OBJECT is a process. */) |
643 | (object) | |
4ee3e309 | 644 | Lisp_Object object; |
d0d6b7c5 | 645 | { |
4ee3e309 | 646 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
647 | } |
648 | ||
649 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
650 | doc: /* Return the process named NAME, or nil if there is none. */) |
651 | (name) | |
d0d6b7c5 JB |
652 | register Lisp_Object name; |
653 | { | |
bcd69aea | 654 | if (PROCESSP (name)) |
d0d6b7c5 | 655 | return name; |
b7826503 | 656 | CHECK_STRING (name); |
d0d6b7c5 JB |
657 | return Fcdr (Fassoc (name, Vprocess_alist)); |
658 | } | |
659 | ||
660 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
661 | doc: /* Return the (or a) process associated with BUFFER. |
662 | BUFFER may be a buffer or the name of one. */) | |
663 | (buffer) | |
4ee3e309 | 664 | register Lisp_Object buffer; |
d0d6b7c5 JB |
665 | { |
666 | register Lisp_Object buf, tail, proc; | |
667 | ||
4ee3e309 EN |
668 | if (NILP (buffer)) return Qnil; |
669 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
670 | if (NILP (buf)) return Qnil; |
671 | ||
672 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
673 | { | |
674 | proc = Fcdr (Fcar (tail)); | |
bcd69aea | 675 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
676 | return proc; |
677 | } | |
678 | return Qnil; | |
679 | } | |
680 | ||
ebb9e16f JB |
681 | /* This is how commands for the user decode process arguments. It |
682 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
683 | Buffers denote the first process in the buffer, and nil denotes the | |
684 | current buffer. */ | |
d0d6b7c5 | 685 | |
77b221b1 | 686 | static Lisp_Object |
d0d6b7c5 JB |
687 | get_process (name) |
688 | register Lisp_Object name; | |
689 | { | |
1619761d KH |
690 | register Lisp_Object proc, obj; |
691 | if (STRINGP (name)) | |
692 | { | |
693 | obj = Fget_process (name); | |
694 | if (NILP (obj)) | |
695 | obj = Fget_buffer (name); | |
696 | if (NILP (obj)) | |
d5db4077 | 697 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
698 | } |
699 | else if (NILP (name)) | |
700 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 701 | else |
1619761d KH |
702 | obj = name; |
703 | ||
704 | /* Now obj should be either a buffer object or a process object. | |
705 | */ | |
706 | if (BUFFERP (obj)) | |
d0d6b7c5 | 707 | { |
1619761d | 708 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 709 | if (NILP (proc)) |
d5db4077 | 710 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 711 | } |
d0d6b7c5 | 712 | else |
1619761d | 713 | { |
b7826503 | 714 | CHECK_PROCESS (obj); |
1619761d KH |
715 | proc = obj; |
716 | } | |
717 | return proc; | |
d0d6b7c5 JB |
718 | } |
719 | ||
720 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, | |
fdb82f93 PJ |
721 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
722 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
723 | nil, indicating the current buffer's process. */) | |
724 | (process) | |
4ee3e309 | 725 | register Lisp_Object process; |
d0d6b7c5 | 726 | { |
4ee3e309 EN |
727 | process = get_process (process); |
728 | XPROCESS (process)->raw_status_low = Qnil; | |
729 | XPROCESS (process)->raw_status_high = Qnil; | |
730 | if (NETCONN_P (process)) | |
d0d6b7c5 | 731 | { |
4ee3e309 EN |
732 | XPROCESS (process)->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
733 | XSETINT (XPROCESS (process)->tick, ++process_tick); | |
d0d6b7c5 | 734 | } |
4ee3e309 | 735 | else if (XINT (XPROCESS (process)->infd) >= 0) |
d0d6b7c5 | 736 | { |
4ee3e309 | 737 | Fkill_process (process, Qnil); |
d0d6b7c5 | 738 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ |
177c0ea7 | 739 | XPROCESS (process)->status |
d0d6b7c5 | 740 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); |
4ee3e309 | 741 | XSETINT (XPROCESS (process)->tick, ++process_tick); |
d0d6b7c5 JB |
742 | status_notify (); |
743 | } | |
4ee3e309 | 744 | remove_process (process); |
d0d6b7c5 JB |
745 | return Qnil; |
746 | } | |
747 | \f | |
748 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
749 | doc: /* Return the status of PROCESS. |
750 | The returned value is one of the following symbols: | |
751 | run -- for a process that is running. | |
752 | stop -- for a process stopped but continuable. | |
753 | exit -- for a process that has exited. | |
754 | signal -- for a process that has got a fatal signal. | |
755 | open -- for a network stream connection that is open. | |
e690ca94 | 756 | listen -- for a network stream server that is listening. |
fdb82f93 | 757 | closed -- for a network stream connection that is closed. |
e4984112 KS |
758 | connect -- when waiting for a non-blocking connection to complete. |
759 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
760 | nil -- if arg is a process name and no such process exists. |
761 | PROCESS may be a process, a buffer, the name of a process, or | |
762 | nil, indicating the current buffer's process. */) | |
763 | (process) | |
4ee3e309 | 764 | register Lisp_Object process; |
d0d6b7c5 JB |
765 | { |
766 | register struct Lisp_Process *p; | |
767 | register Lisp_Object status; | |
343f4114 | 768 | |
4ee3e309 EN |
769 | if (STRINGP (process)) |
770 | process = Fget_process (process); | |
343f4114 | 771 | else |
4ee3e309 | 772 | process = get_process (process); |
343f4114 | 773 | |
4ee3e309 EN |
774 | if (NILP (process)) |
775 | return process; | |
343f4114 | 776 | |
4ee3e309 | 777 | p = XPROCESS (process); |
d0d6b7c5 JB |
778 | if (!NILP (p->raw_status_low)) |
779 | update_status (p); | |
780 | status = p->status; | |
bcd69aea | 781 | if (CONSP (status)) |
70949dac | 782 | status = XCAR (status); |
e690ca94 | 783 | if (NETCONN1_P (p)) |
d0d6b7c5 | 784 | { |
e690ca94 | 785 | if (EQ (status, Qexit)) |
d0d6b7c5 | 786 | status = Qclosed; |
e690ca94 KS |
787 | else if (EQ (p->command, Qt)) |
788 | status = Qstop; | |
789 | else if (EQ (status, Qrun)) | |
790 | status = Qopen; | |
d0d6b7c5 JB |
791 | } |
792 | return status; | |
793 | } | |
794 | ||
795 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
796 | 1, 1, 0, | |
fdb82f93 PJ |
797 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
798 | If PROCESS has not yet exited or died, return 0. */) | |
799 | (process) | |
4ee3e309 | 800 | register Lisp_Object process; |
d0d6b7c5 | 801 | { |
b7826503 | 802 | CHECK_PROCESS (process); |
4ee3e309 EN |
803 | if (!NILP (XPROCESS (process)->raw_status_low)) |
804 | update_status (XPROCESS (process)); | |
805 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 806 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
807 | return make_number (0); |
808 | } | |
809 | ||
810 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 PJ |
811 | doc: /* Return the process id of PROCESS. |
812 | This is the pid of the Unix process which PROCESS uses or talks to. | |
813 | For a network connection, this value is nil. */) | |
814 | (process) | |
4ee3e309 | 815 | register Lisp_Object process; |
d0d6b7c5 | 816 | { |
b7826503 | 817 | CHECK_PROCESS (process); |
4ee3e309 | 818 | return XPROCESS (process)->pid; |
d0d6b7c5 JB |
819 | } |
820 | ||
821 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
822 | doc: /* Return the name of PROCESS, as a string. |
823 | This is the name of the program invoked in PROCESS, | |
824 | possibly modified to make it unique among process names. */) | |
825 | (process) | |
4ee3e309 | 826 | register Lisp_Object process; |
d0d6b7c5 | 827 | { |
b7826503 | 828 | CHECK_PROCESS (process); |
4ee3e309 | 829 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
830 | } |
831 | ||
832 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
833 | doc: /* Return the command that was executed to start PROCESS. |
834 | This is a list of strings, the first string being the program executed | |
835 | and the rest of the strings being the arguments given to it. | |
836 | For a non-child channel, this is nil. */) | |
837 | (process) | |
4ee3e309 | 838 | register Lisp_Object process; |
d0d6b7c5 | 839 | { |
b7826503 | 840 | CHECK_PROCESS (process); |
4ee3e309 | 841 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
842 | } |
843 | ||
3b9a3dfa | 844 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
845 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
846 | This is the terminal that the process itself reads and writes on, | |
847 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
848 | (process) | |
4ee3e309 | 849 | register Lisp_Object process; |
3b9a3dfa | 850 | { |
b7826503 | 851 | CHECK_PROCESS (process); |
4ee3e309 | 852 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
853 | } |
854 | ||
d0d6b7c5 | 855 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
856 | 2, 2, 0, |
857 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
858 | (process, buffer) | |
4ee3e309 | 859 | register Lisp_Object process, buffer; |
d0d6b7c5 | 860 | { |
e690ca94 KS |
861 | struct Lisp_Process *p; |
862 | ||
b7826503 | 863 | CHECK_PROCESS (process); |
d0d6b7c5 | 864 | if (!NILP (buffer)) |
b7826503 | 865 | CHECK_BUFFER (buffer); |
e690ca94 KS |
866 | p = XPROCESS (process); |
867 | p->buffer = buffer; | |
868 | if (NETCONN1_P (p)) | |
869 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); | |
03f04413 | 870 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
871 | return buffer; |
872 | } | |
873 | ||
874 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
875 | 1, 1, 0, |
876 | doc: /* Return the buffer PROCESS is associated with. | |
877 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
878 | (process) | |
4ee3e309 | 879 | register Lisp_Object process; |
d0d6b7c5 | 880 | { |
b7826503 | 881 | CHECK_PROCESS (process); |
4ee3e309 | 882 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
883 | } |
884 | ||
885 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
886 | 1, 1, 0, |
887 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
888 | (process) | |
4ee3e309 | 889 | register Lisp_Object process; |
d0d6b7c5 | 890 | { |
b7826503 | 891 | CHECK_PROCESS (process); |
4ee3e309 | 892 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
893 | } |
894 | ||
895 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
896 | 2, 2, 0, |
897 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
898 | t means stop accepting output from the process. | |
3452df9e KS |
899 | |
900 | When a process has a filter, its buffer is not used for output. | |
901 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 902 | passed to the filter. |
3452df9e | 903 | |
fdb82f93 | 904 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
905 | The string argument is normally a multibyte string, except: |
906 | - if the process' input coding system is no-conversion or raw-text, | |
907 | it is a unibyte string (the non-converted input), or else | |
908 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
909 | string (the result of converting the decoded input multibyte | |
910 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 911 | (process, filter) |
4ee3e309 | 912 | register Lisp_Object process, filter; |
d0d6b7c5 | 913 | { |
471f86b9 | 914 | struct Lisp_Process *p; |
177c0ea7 | 915 | |
b7826503 | 916 | CHECK_PROCESS (process); |
471f86b9 GM |
917 | p = XPROCESS (process); |
918 | ||
919 | /* Don't signal an error if the process' input file descriptor | |
920 | is closed. This could make debugging Lisp more difficult, | |
921 | for example when doing something like | |
922 | ||
923 | (setq process (start-process ...)) | |
924 | (debug) | |
925 | (set-process-filter process ...) */ | |
177c0ea7 | 926 | |
471f86b9 | 927 | if (XINT (p->infd) >= 0) |
a69281ff | 928 | { |
e690ca94 | 929 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 GM |
930 | { |
931 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
932 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
933 | } | |
e690ca94 KS |
934 | else if (EQ (p->filter, Qt) |
935 | && !EQ (p->command, Qt)) /* Network process not stopped. */ | |
471f86b9 GM |
936 | { |
937 | FD_SET (XINT (p->infd), &input_wait_mask); | |
938 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
939 | } | |
a69281ff | 940 | } |
177c0ea7 | 941 | |
471f86b9 | 942 | p->filter = filter; |
e690ca94 KS |
943 | if (NETCONN1_P (p)) |
944 | p->childp = Fplist_put (p->childp, QCfilter, filter); | |
03f04413 | 945 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
946 | return filter; |
947 | } | |
948 | ||
949 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
950 | 1, 1, 0, |
951 | doc: /* Returns the filter function of PROCESS; nil if none. | |
952 | See `set-process-filter' for more info on filter functions. */) | |
953 | (process) | |
4ee3e309 | 954 | register Lisp_Object process; |
d0d6b7c5 | 955 | { |
b7826503 | 956 | CHECK_PROCESS (process); |
4ee3e309 | 957 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
958 | } |
959 | ||
960 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
961 | 2, 2, 0, |
962 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
963 | The sentinel is called as a function when the process changes state. | |
964 | It gets two arguments: the process, and a string describing the change. */) | |
965 | (process, sentinel) | |
4ee3e309 | 966 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 967 | { |
2ccf3102 KS |
968 | struct Lisp_Process *p; |
969 | ||
b7826503 | 970 | CHECK_PROCESS (process); |
2ccf3102 KS |
971 | p = XPROCESS (process); |
972 | ||
973 | p->sentinel = sentinel; | |
974 | if (NETCONN1_P (p)) | |
975 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); | |
d0d6b7c5 JB |
976 | return sentinel; |
977 | } | |
978 | ||
979 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
980 | 1, 1, 0, |
981 | doc: /* Return the sentinel of PROCESS; nil if none. | |
982 | See `set-process-sentinel' for more info on sentinels. */) | |
983 | (process) | |
4ee3e309 | 984 | register Lisp_Object process; |
d0d6b7c5 | 985 | { |
b7826503 | 986 | CHECK_PROCESS (process); |
4ee3e309 | 987 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
988 | } |
989 | ||
396df322 | 990 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
991 | Sset_process_window_size, 3, 3, 0, |
992 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
993 | (process, height, width) | |
4ee3e309 | 994 | register Lisp_Object process, height, width; |
396df322 | 995 | { |
b7826503 PJ |
996 | CHECK_PROCESS (process); |
997 | CHECK_NATNUM (height); | |
998 | CHECK_NATNUM (width); | |
177c0ea7 | 999 | |
989521fd | 1000 | if (XINT (XPROCESS (process)->infd) < 0 |
471f86b9 GM |
1001 | || set_window_size (XINT (XPROCESS (process)->infd), |
1002 | XINT (height), XINT (width)) <= 0) | |
396df322 RS |
1003 | return Qnil; |
1004 | else | |
1005 | return Qt; | |
1006 | } | |
1007 | ||
52a1b894 | 1008 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1009 | Fset_process_inherit_coding_system_flag, |
1010 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1011 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1012 | If the second argument FLAG is non-nil, then the variable | |
1013 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1014 | will be bound to the value of the coding system used to decode | |
1015 | the process output. | |
1016 | ||
1017 | This is useful when the coding system specified for the process buffer | |
1018 | leaves either the character code conversion or the end-of-line conversion | |
1019 | unspecified, or if the coding system used to decode the process output | |
1020 | is more appropriate for saving the process buffer. | |
1021 | ||
1022 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1023 | starting the process is an alternative way of setting the inherit flag | |
1024 | for the process which will run. */) | |
1025 | (process, flag) | |
52a1b894 EZ |
1026 | register Lisp_Object process, flag; |
1027 | { | |
b7826503 | 1028 | CHECK_PROCESS (process); |
aa91317a | 1029 | XPROCESS (process)->inherit_coding_system_flag = flag; |
52a1b894 EZ |
1030 | return flag; |
1031 | } | |
1032 | ||
1033 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1034 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1035 | 1, 1, 0, | |
1036 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1037 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1038 | associated with PROCESS will inherit the coding system used to decode | |
1039 | the process output. */) | |
1040 | (process) | |
52a1b894 EZ |
1041 | register Lisp_Object process; |
1042 | { | |
b7826503 | 1043 | CHECK_PROCESS (process); |
aa91317a | 1044 | return XPROCESS (process)->inherit_coding_system_flag; |
52a1b894 EZ |
1045 | } |
1046 | ||
e690ca94 KS |
1047 | DEFUN ("set-process-query-on-exit-flag", |
1048 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1049 | 2, 2, 0, | |
1050 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
1051 | If the second argument FLAG is non-nil, emacs will query the user before | |
1052 | exiting if PROCESS is running. */) | |
1053 | (process, flag) | |
1054 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1055 | { |
b7826503 | 1056 | CHECK_PROCESS (process); |
e690ca94 KS |
1057 | XPROCESS (process)->kill_without_query = Fnull (flag); |
1058 | return flag; | |
d0d6b7c5 | 1059 | } |
312c9964 | 1060 | |
e690ca94 KS |
1061 | DEFUN ("process-query-on-exit-flag", |
1062 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1063 | 1, 1, 0, |
e690ca94 | 1064 | doc: /* Return the current value of query on exit flag for PROCESS. */) |
fdb82f93 | 1065 | (process) |
de282a05 RS |
1066 | register Lisp_Object process; |
1067 | { | |
b7826503 | 1068 | CHECK_PROCESS (process); |
e690ca94 KS |
1069 | return Fnull (XPROCESS (process)->kill_without_query); |
1070 | } | |
1071 | ||
1072 | #ifdef DATAGRAM_SOCKETS | |
1073 | Lisp_Object Fprocess_datagram_address (); | |
1074 | #endif | |
1075 | ||
1076 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1077 | 1, 2, 0, | |
1078 | doc: /* Return the contact info of PROCESS; t for a real child. | |
1079 | For a net connection, the value depends on the optional KEY arg. | |
1080 | If KEY is nil, value is a cons cell of the form (HOST SERVICE), | |
1081 | if KEY is t, the complete contact information for the connection is | |
1082 | returned, else the specific value for the keyword KEY is returned. | |
1083 | See `make-network-process' for a list of keywords. */) | |
1084 | (process, key) | |
1085 | register Lisp_Object process, key; | |
1086 | { | |
1087 | Lisp_Object contact; | |
1088 | ||
1089 | CHECK_PROCESS (process); | |
1090 | contact = XPROCESS (process)->childp; | |
1091 | ||
1092 | #ifdef DATAGRAM_SOCKETS | |
1093 | if (DATAGRAM_CONN_P (process) | |
1094 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1095 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1096 | Fprocess_datagram_address (process)); |
1097 | #endif | |
1098 | ||
1099 | if (!NETCONN_P (process) || EQ (key, Qt)) | |
1100 | return contact; | |
1101 | if (NILP (key)) | |
1102 | return Fcons (Fplist_get (contact, QChost), | |
1103 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
1104 | return Fplist_get (contact, key); | |
de282a05 RS |
1105 | } |
1106 | ||
faa7db08 KS |
1107 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1108 | 1, 1, 0, | |
1109 | doc: /* Return the plist of PROCESS. */) | |
1110 | (process) | |
1111 | register Lisp_Object process; | |
365aee82 | 1112 | { |
ac4a7584 | 1113 | CHECK_PROCESS (process); |
faa7db08 | 1114 | return XPROCESS (process)->plist; |
ac4a7584 | 1115 | } |
365aee82 | 1116 | |
faa7db08 KS |
1117 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1118 | 2, 2, 0, | |
26a086c6 | 1119 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1120 | (process, plist) |
1121 | register Lisp_Object process, plist; | |
ac4a7584 | 1122 | { |
365aee82 | 1123 | CHECK_PROCESS (process); |
faa7db08 | 1124 | CHECK_LIST (plist); |
365aee82 | 1125 | |
faa7db08 | 1126 | XPROCESS (process)->plist = plist; |
26a086c6 | 1127 | return plist; |
365aee82 KS |
1128 | } |
1129 | ||
312c9964 RS |
1130 | #if 0 /* Turned off because we don't currently record this info |
1131 | in the process. Perhaps add it. */ | |
1132 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1133 | doc: /* Return the connection type of PROCESS. |
1134 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1135 | a socket connection. */) | |
1136 | (process) | |
312c9964 RS |
1137 | Lisp_Object process; |
1138 | { | |
1139 | return XPROCESS (process)->type; | |
1140 | } | |
1141 | #endif | |
991234f0 KS |
1142 | |
1143 | #ifdef HAVE_SOCKETS | |
1144 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1145 | 1, 2, 0, |
991234f0 | 1146 | doc: /* Convert network ADDRESS from internal format to a string. |
0dccee41 KS |
1147 | If optional second argument OMIT-PORT is non-nil, don't include a port |
1148 | number in the string; in this case, interpret a 4 element vector as an | |
1149 | IP address. Returns nil if format of ADDRESS is invalid. */) | |
1150 | (address, omit_port) | |
1151 | Lisp_Object address, omit_port; | |
991234f0 | 1152 | { |
991234f0 KS |
1153 | if (NILP (address)) |
1154 | return Qnil; | |
1155 | ||
1156 | if (STRINGP (address)) /* AF_LOCAL */ | |
1157 | return address; | |
1158 | ||
1159 | if (VECTORP (address)) /* AF_INET */ | |
1160 | { | |
1161 | register struct Lisp_Vector *p = XVECTOR (address); | |
1162 | Lisp_Object args[6]; | |
0dccee41 | 1163 | int nargs, i; |
991234f0 | 1164 | |
0dccee41 KS |
1165 | if (!NILP (omit_port) && (p->size == 4 || p->size == 5)) |
1166 | { | |
1167 | args[0] = build_string ("%d.%d.%d.%d"); | |
1168 | nargs = 4; | |
1169 | } | |
1170 | else if (p->size == 5) | |
1171 | { | |
1172 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1173 | nargs = 5; | |
1174 | } | |
1175 | else | |
991234f0 KS |
1176 | return Qnil; |
1177 | ||
0dccee41 KS |
1178 | for (i = 0; i < nargs; i++) |
1179 | args[i+1] = p->contents[i]; | |
1180 | return Fformat (nargs+1, args); | |
991234f0 KS |
1181 | } |
1182 | ||
1183 | if (CONSP (address)) | |
1184 | { | |
1185 | Lisp_Object args[2]; | |
1186 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1187 | args[1] = Fcar (address); |
991234f0 | 1188 | return Fformat (2, args); |
177c0ea7 | 1189 | |
991234f0 KS |
1190 | } |
1191 | ||
1192 | return Qnil; | |
1193 | } | |
1194 | #endif | |
d0d6b7c5 JB |
1195 | \f |
1196 | Lisp_Object | |
e690ca94 KS |
1197 | list_processes_1 (query_only) |
1198 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1199 | { |
1200 | register Lisp_Object tail, tem; | |
1201 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1202 | register struct Lisp_Process *p; |
e690ca94 KS |
1203 | char tembuf[300]; |
1204 | int w_proc, w_buffer, w_tty; | |
1205 | Lisp_Object i_status, i_buffer, i_tty, i_command; | |
1206 | ||
1207 | w_proc = 4; /* Proc */ | |
1208 | w_buffer = 6; /* Buffer */ | |
1209 | w_tty = 0; /* Omit if no ttys */ | |
1210 | ||
1211 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1212 | { | |
1213 | int i; | |
1214 | ||
1215 | proc = Fcdr (Fcar (tail)); | |
1216 | p = XPROCESS (proc); | |
1217 | if (NILP (p->childp)) | |
1218 | continue; | |
1219 | if (!NILP (query_only) && !NILP (p->kill_without_query)) | |
1220 | continue; | |
1221 | if (STRINGP (p->name) | |
d5db4077 | 1222 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1223 | w_proc = i; |
1224 | if (!NILP (p->buffer)) | |
1225 | { | |
1226 | if (NILP (XBUFFER (p->buffer)->name) && w_buffer < 8) | |
1227 | w_buffer = 8; /* (Killed) */ | |
d5db4077 | 1228 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1229 | w_buffer = i; |
1230 | } | |
1231 | if (STRINGP (p->tty_name) | |
d5db4077 | 1232 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1233 | w_tty = i; |
1234 | } | |
1235 | ||
1236 | XSETFASTINT (i_status, w_proc + 1); | |
1237 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1238 | if (w_tty) | |
1239 | { | |
1240 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
1241 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_tty + 1); | |
1242 | } else { | |
1243 | i_tty = Qnil; | |
1244 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1245 | } | |
d0d6b7c5 | 1246 | |
22719df2 | 1247 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1248 | |
1249 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
1250 | Fbuffer_disable_undo (Vstandard_output); | |
1251 | ||
1252 | current_buffer->truncate_lines = Qt; | |
1253 | ||
e690ca94 KS |
1254 | write_string ("Proc", -1); |
1255 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1256 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1257 | if (!NILP (i_tty)) | |
1258 | { | |
1259 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1260 | } | |
1261 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1262 | write_string ("\n", -1); | |
1263 | ||
1264 | write_string ("----", -1); | |
1265 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1266 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1267 | if (!NILP (i_tty)) | |
1268 | { | |
1269 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1270 | } | |
1271 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1272 | write_string ("\n", -1); | |
d0d6b7c5 JB |
1273 | |
1274 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1275 | { | |
1276 | Lisp_Object symbol; | |
1277 | ||
1278 | proc = Fcdr (Fcar (tail)); | |
1279 | p = XPROCESS (proc); | |
1280 | if (NILP (p->childp)) | |
1281 | continue; | |
e690ca94 KS |
1282 | if (!NILP (query_only) && !NILP (p->kill_without_query)) |
1283 | continue; | |
d0d6b7c5 JB |
1284 | |
1285 | Finsert (1, &p->name); | |
e690ca94 | 1286 | Findent_to (i_status, minspace); |
d0d6b7c5 JB |
1287 | |
1288 | if (!NILP (p->raw_status_low)) | |
1289 | update_status (p); | |
1290 | symbol = p->status; | |
bcd69aea | 1291 | if (CONSP (p->status)) |
70949dac | 1292 | symbol = XCAR (p->status); |
d0d6b7c5 | 1293 | |
177c0ea7 | 1294 | |
d0d6b7c5 JB |
1295 | if (EQ (symbol, Qsignal)) |
1296 | { | |
1297 | Lisp_Object tem; | |
1298 | tem = Fcar (Fcdr (p->status)); | |
1299 | #ifdef VMS | |
1300 | if (XINT (tem) < NSIG) | |
b0310da4 | 1301 | write_string (sys_errlist [XINT (tem)], -1); |
d0d6b7c5 JB |
1302 | else |
1303 | #endif | |
1304 | Fprinc (symbol, Qnil); | |
1305 | } | |
e690ca94 | 1306 | else if (NETCONN1_P (p)) |
d0d6b7c5 | 1307 | { |
e690ca94 | 1308 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1309 | write_string ("closed", -1); |
e690ca94 KS |
1310 | else if (EQ (p->command, Qt)) |
1311 | write_string ("stopped", -1); | |
1312 | else if (EQ (symbol, Qrun)) | |
1313 | write_string ("open", -1); | |
d0d6b7c5 JB |
1314 | else |
1315 | Fprinc (symbol, Qnil); | |
1316 | } | |
1317 | else | |
1318 | Fprinc (symbol, Qnil); | |
1319 | ||
1320 | if (EQ (symbol, Qexit)) | |
1321 | { | |
1322 | Lisp_Object tem; | |
1323 | tem = Fcar (Fcdr (p->status)); | |
1324 | if (XFASTINT (tem)) | |
1325 | { | |
3162bafa | 1326 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1327 | write_string (tembuf, -1); |
1328 | } | |
1329 | } | |
1330 | ||
1331 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
1332 | remove_process (proc); | |
1333 | ||
e690ca94 | 1334 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1335 | if (NILP (p->buffer)) |
1336 | insert_string ("(none)"); | |
1337 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1338 | insert_string ("(Killed)"); | |
1339 | else | |
1340 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1341 | ||
e690ca94 KS |
1342 | if (!NILP (i_tty)) |
1343 | { | |
1344 | Findent_to (i_tty, minspace); | |
1345 | if (STRINGP (p->tty_name)) | |
1346 | Finsert (1, &p->tty_name); | |
1347 | } | |
a9fde32e | 1348 | |
e690ca94 | 1349 | Findent_to (i_command, minspace); |
a9fde32e | 1350 | |
e690ca94 KS |
1351 | if (EQ (p->status, Qlisten)) |
1352 | { | |
1353 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1354 | if (INTEGERP (port)) | |
1355 | port = Fnumber_to_string (port); | |
991234f0 | 1356 | if (NILP (port)) |
0dccee41 | 1357 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1358 | sprintf (tembuf, "(network %s server on %s)\n", |
bed9664a | 1359 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1360 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1361 | insert_string (tembuf); |
1362 | } | |
1363 | else if (NETCONN1_P (p)) | |
d0d6b7c5 | 1364 | { |
e690ca94 KS |
1365 | /* For a local socket, there is no host name, |
1366 | so display service instead. */ | |
1367 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1368 | if (!STRINGP (host)) | |
1369 | { | |
1370 | host = Fplist_get (p->childp, QCservice); | |
1371 | if (INTEGERP (host)) | |
1372 | host = Fnumber_to_string (host); | |
1373 | } | |
991234f0 | 1374 | if (NILP (host)) |
0dccee41 | 1375 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1376 | sprintf (tembuf, "(network %s connection to %s)\n", |
bed9664a | 1377 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1378 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 JB |
1379 | insert_string (tembuf); |
1380 | } | |
177c0ea7 | 1381 | else |
d0d6b7c5 JB |
1382 | { |
1383 | tem = p->command; | |
1384 | while (1) | |
1385 | { | |
1386 | tem1 = Fcar (tem); | |
1387 | Finsert (1, &tem1); | |
1388 | tem = Fcdr (tem); | |
1389 | if (NILP (tem)) | |
1390 | break; | |
1391 | insert_string (" "); | |
1392 | } | |
1393 | insert_string ("\n"); | |
1394 | } | |
1395 | } | |
1396 | return Qnil; | |
1397 | } | |
1398 | ||
e690ca94 | 1399 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1400 | doc: /* Display a list of all processes. |
e690ca94 KS |
1401 | If optional argument QUERY-ONLY is non-nil, only processes with |
1402 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1403 | Any process listed as exited or signaled is actually eliminated |
1404 | after the listing is made. */) | |
e690ca94 KS |
1405 | (query_only) |
1406 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1407 | { |
1408 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1409 | list_processes_1, query_only); |
d0d6b7c5 JB |
1410 | return Qnil; |
1411 | } | |
1412 | ||
1413 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1414 | doc: /* Return a list of all processes. */) |
1415 | () | |
d0d6b7c5 JB |
1416 | { |
1417 | return Fmapcar (Qcdr, Vprocess_alist); | |
1418 | } | |
1419 | \f | |
b0310da4 JB |
1420 | /* Starting asynchronous inferior processes. */ |
1421 | ||
1422 | static Lisp_Object start_process_unwind (); | |
1423 | ||
d0d6b7c5 | 1424 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1425 | doc: /* Start a program in a subprocess. Return the process object for it. |
1426 | NAME is name for process. It is modified if necessary to make it unique. | |
1427 | BUFFER is the buffer or (buffer-name) to associate with the process. | |
1428 | Process output goes at end of that buffer, unless you specify | |
1429 | an output stream or filter function to handle the output. | |
1430 | BUFFER may be also nil, meaning that this process is not associated | |
1431 | with any buffer. | |
1432 | Third arg is program file name. It is searched for in PATH. | |
3ecdf100 | 1433 | Remaining arguments are strings to give program as arguments. |
320aebc9 | 1434 | |
3ecdf100 | 1435 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1436 | (nargs, args) |
d0d6b7c5 JB |
1437 | int nargs; |
1438 | register Lisp_Object *args; | |
1439 | { | |
1e30af70 | 1440 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 JB |
1441 | #ifdef VMS |
1442 | register unsigned char *new_argv; | |
1443 | int len; | |
1444 | #else | |
1445 | register unsigned char **new_argv; | |
1446 | #endif | |
1447 | register int i; | |
aed13378 | 1448 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1449 | |
1450 | buffer = args[1]; | |
1451 | if (!NILP (buffer)) | |
1452 | buffer = Fget_buffer_create (buffer); | |
1453 | ||
1e30af70 JB |
1454 | /* Make sure that the child will be able to chdir to the current |
1455 | buffer's current directory, or its unhandled equivalent. We | |
1456 | can't just have the child check for an error when it does the | |
1457 | chdir, since it's in a vfork. | |
1458 | ||
1459 | We have to GCPRO around this because Fexpand_file_name and | |
1460 | Funhandled_file_name_directory might call a file name handling | |
1461 | function. The argument list is protected by the caller, so all | |
1462 | we really have to worry about is buffer. */ | |
1463 | { | |
1464 | struct gcpro gcpro1, gcpro2; | |
1465 | ||
1466 | current_dir = current_buffer->directory; | |
1467 | ||
1468 | GCPRO2 (buffer, current_dir); | |
1469 | ||
177c0ea7 | 1470 | current_dir |
7af71e17 RS |
1471 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), |
1472 | Qnil); | |
1e30af70 JB |
1473 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1474 | report_file_error ("Setting current directory", | |
1475 | Fcons (current_buffer->directory, Qnil)); | |
1476 | ||
1477 | UNGCPRO; | |
1478 | } | |
1479 | ||
d0d6b7c5 | 1480 | name = args[0]; |
b7826503 | 1481 | CHECK_STRING (name); |
d0d6b7c5 JB |
1482 | |
1483 | program = args[2]; | |
1484 | ||
b7826503 | 1485 | CHECK_STRING (program); |
d0d6b7c5 | 1486 | |
d0d6b7c5 | 1487 | proc = make_process (name); |
b0310da4 JB |
1488 | /* If an error occurs and we can't start the process, we want to |
1489 | remove it from the process list. This means that each error | |
1490 | check in create_process doesn't need to call remove_process | |
1491 | itself; it's all taken care of here. */ | |
1492 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1493 | |
1494 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1495 | XPROCESS (proc)->plist = Qnil; |
d0d6b7c5 JB |
1496 | XPROCESS (proc)->command_channel_p = Qnil; |
1497 | XPROCESS (proc)->buffer = buffer; | |
1498 | XPROCESS (proc)->sentinel = Qnil; | |
1499 | XPROCESS (proc)->filter = Qnil; | |
03f04413 KH |
1500 | XPROCESS (proc)->filter_multibyte |
1501 | = buffer_defaults.enable_multibyte_characters; | |
d0d6b7c5 JB |
1502 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); |
1503 | ||
7af71e17 RS |
1504 | /* Make the process marker point into the process buffer (if any). */ |
1505 | if (!NILP (buffer)) | |
d8a2934e RS |
1506 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1507 | BUF_ZV (XBUFFER (buffer)), | |
1508 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1509 | |
67918941 | 1510 | { |
d5d4ae71 KH |
1511 | /* Decide coding systems for communicating with the process. Here |
1512 | we don't setup the structure coding_system nor pay attention to | |
1513 | unibyte mode. They are done in create_process. */ | |
1514 | ||
67918941 RS |
1515 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1516 | Lisp_Object coding_systems = Qt; | |
1517 | Lisp_Object val, *args2; | |
a4a37e65 | 1518 | struct gcpro gcpro1, gcpro2; |
67918941 | 1519 | |
d5d4ae71 KH |
1520 | val = Vcoding_system_for_read; |
1521 | if (NILP (val)) | |
67918941 RS |
1522 | { |
1523 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1524 | args2[0] = Qstart_process; | |
1525 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1526 | GCPRO2 (proc, current_dir); |
67918941 RS |
1527 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1528 | UNGCPRO; | |
1529 | if (CONSP (coding_systems)) | |
70949dac | 1530 | val = XCAR (coding_systems); |
67918941 | 1531 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1532 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1533 | } |
1534 | XPROCESS (proc)->decode_coding_system = val; | |
1535 | ||
d5d4ae71 KH |
1536 | val = Vcoding_system_for_write; |
1537 | if (NILP (val)) | |
67918941 RS |
1538 | { |
1539 | if (EQ (coding_systems, Qt)) | |
1540 | { | |
1541 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1542 | args2[0] = Qstart_process; | |
1543 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1544 | GCPRO2 (proc, current_dir); |
67918941 RS |
1545 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1546 | UNGCPRO; | |
1547 | } | |
1548 | if (CONSP (coding_systems)) | |
70949dac | 1549 | val = XCDR (coding_systems); |
67918941 | 1550 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1551 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1552 | } |
1553 | XPROCESS (proc)->encode_coding_system = val; | |
1554 | } | |
0fa1789e | 1555 | |
a4a37e65 KH |
1556 | #ifdef VMS |
1557 | /* Make a one member argv with all args concatenated | |
1558 | together separated by a blank. */ | |
d5db4077 | 1559 | len = SBYTES (program) + 2; |
a4a37e65 KH |
1560 | for (i = 3; i < nargs; i++) |
1561 | { | |
1562 | tem = args[i]; | |
b7826503 | 1563 | CHECK_STRING (tem); |
d5db4077 | 1564 | len += SBYTES (tem) + 1; /* count the blank */ |
a4a37e65 KH |
1565 | } |
1566 | new_argv = (unsigned char *) alloca (len); | |
d5db4077 | 1567 | strcpy (new_argv, SDATA (program)); |
a4a37e65 KH |
1568 | for (i = 3; i < nargs; i++) |
1569 | { | |
1570 | tem = args[i]; | |
b7826503 | 1571 | CHECK_STRING (tem); |
a4a37e65 | 1572 | strcat (new_argv, " "); |
d5db4077 | 1573 | strcat (new_argv, SDATA (tem)); |
a4a37e65 KH |
1574 | } |
1575 | /* Need to add code here to check for program existence on VMS */ | |
177c0ea7 | 1576 | |
a4a37e65 KH |
1577 | #else /* not VMS */ |
1578 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1579 | ||
ed30cf85 RS |
1580 | /* If program file name is not absolute, search our path for it. |
1581 | Put the name we will really use in TEM. */ | |
d5db4077 KR |
1582 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) |
1583 | && !(SCHARS (program) > 1 | |
1584 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
a4a37e65 KH |
1585 | { |
1586 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1587 | ||
1588 | tem = Qnil; | |
1589 | GCPRO4 (name, program, buffer, current_dir); | |
cc4db0c7 | 1590 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); |
a4a37e65 KH |
1591 | UNGCPRO; |
1592 | if (NILP (tem)) | |
1593 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1594 | tem = Fexpand_file_name (tem, Qnil); | |
a4a37e65 KH |
1595 | } |
1596 | else | |
1597 | { | |
1598 | if (!NILP (Ffile_directory_p (program))) | |
1599 | error ("Specified program for new process is a directory"); | |
ed30cf85 | 1600 | tem = program; |
a4a37e65 KH |
1601 | } |
1602 | ||
ed30cf85 RS |
1603 | /* If program file name starts with /: for quoting a magic name, |
1604 | discard that. */ | |
1605 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1606 | && SREF (tem, 1) == ':') | |
1607 | tem = Fsubstring (tem, make_number (2), Qnil); | |
1608 | ||
1609 | /* Encode the file name and put it in NEW_ARGV. | |
1610 | That's where the child will use it to execute the program. */ | |
1611 | tem = ENCODE_FILE (tem); | |
1612 | new_argv[0] = SDATA (tem); | |
1613 | ||
a4a37e65 KH |
1614 | /* Here we encode arguments by the coding system used for sending |
1615 | data to the process. We don't support using different coding | |
1616 | systems for encoding arguments and for encoding data sent to the | |
1617 | process. */ | |
1618 | ||
1619 | for (i = 3; i < nargs; i++) | |
1620 | { | |
1621 | tem = args[i]; | |
b7826503 | 1622 | CHECK_STRING (tem); |
a4a37e65 KH |
1623 | if (STRING_MULTIBYTE (tem)) |
1624 | tem = (code_convert_string_norecord | |
1625 | (tem, XPROCESS (proc)->encode_coding_system, 1)); | |
d5db4077 | 1626 | new_argv[i - 2] = SDATA (tem); |
a4a37e65 KH |
1627 | } |
1628 | new_argv[i - 2] = 0; | |
1629 | #endif /* not VMS */ | |
1630 | ||
0fa1789e | 1631 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
e7fbaa65 | 1632 | XPROCESS (proc)->decoding_carryover = make_number (0); |
0fa1789e | 1633 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); |
e7fbaa65 | 1634 | XPROCESS (proc)->encoding_carryover = make_number (0); |
0fa1789e | 1635 | |
52a1b894 | 1636 | XPROCESS (proc)->inherit_coding_system_flag |
aa91317a RS |
1637 | = (NILP (buffer) || !inherit_process_coding_system |
1638 | ? Qnil : Qt); | |
52a1b894 | 1639 | |
6b53bb85 | 1640 | create_process (proc, (char **) new_argv, current_dir); |
d0d6b7c5 | 1641 | |
b0310da4 | 1642 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1643 | } |
1644 | ||
b0310da4 | 1645 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1646 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1647 | an error and the process wasn't started successfully, so we should |
1648 | remove it from the process list. */ | |
1649 | static Lisp_Object | |
1650 | start_process_unwind (proc) | |
1651 | Lisp_Object proc; | |
1652 | { | |
bcd69aea | 1653 | if (!PROCESSP (proc)) |
b0310da4 JB |
1654 | abort (); |
1655 | ||
1656 | /* Was PROC started successfully? */ | |
188d6c4e | 1657 | if (XINT (XPROCESS (proc)->pid) <= 0) |
b0310da4 JB |
1658 | remove_process (proc); |
1659 | ||
1660 | return Qnil; | |
1661 | } | |
1662 | ||
30904ab7 GM |
1663 | void |
1664 | create_process_1 (timer) | |
1665 | struct atimer *timer; | |
d0d6b7c5 | 1666 | { |
30904ab7 | 1667 | /* Nothing to do. */ |
d0d6b7c5 JB |
1668 | } |
1669 | ||
30904ab7 | 1670 | |
d0d6b7c5 JB |
1671 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1672 | #ifdef USG | |
1673 | #ifdef SIGCHLD | |
1674 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1675 | ||
1676 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1677 | int sigchld_deferred; | |
1678 | ||
1679 | SIGTYPE | |
1680 | create_process_sigchld () | |
1681 | { | |
1682 | signal (SIGCHLD, create_process_sigchld); | |
1683 | ||
1684 | sigchld_deferred = 1; | |
1685 | } | |
1686 | #endif | |
1687 | #endif | |
1688 | #endif | |
1689 | ||
1690 | #ifndef VMS /* VMS version of this function is in vmsproc.c. */ | |
6b53bb85 | 1691 | void |
1e30af70 | 1692 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1693 | Lisp_Object process; |
1694 | char **new_argv; | |
1e30af70 | 1695 | Lisp_Object current_dir; |
d0d6b7c5 | 1696 | { |
ecd1f654 | 1697 | int pid, inchannel, outchannel; |
d0d6b7c5 | 1698 | int sv[2]; |
0dc70c33 KH |
1699 | #ifdef POSIX_SIGNALS |
1700 | sigset_t procmask; | |
1701 | sigset_t blocked; | |
1702 | struct sigaction sigint_action; | |
1703 | struct sigaction sigquit_action; | |
1704 | #ifdef AIX | |
1705 | struct sigaction sighup_action; | |
1706 | #endif | |
1707 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1708 | #if 0 |
d0d6b7c5 JB |
1709 | #ifdef SIGCHLD |
1710 | SIGTYPE (*sigchld)(); | |
1711 | #endif | |
41d03b9a | 1712 | #endif /* 0 */ |
0dc70c33 | 1713 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1714 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1715 | volatile int forkin, forkout; | |
1716 | volatile int pty_flag = 0; | |
3ec68006 | 1717 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1718 | extern char **environ; |
3ec68006 | 1719 | #endif |
d0d6b7c5 | 1720 | |
d0d6b7c5 JB |
1721 | inchannel = outchannel = -1; |
1722 | ||
1723 | #ifdef HAVE_PTYS | |
fe45da4e | 1724 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1725 | outchannel = inchannel = allocate_pty (); |
1726 | ||
d0d6b7c5 JB |
1727 | if (inchannel >= 0) |
1728 | { | |
2af70a0c RS |
1729 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1730 | /* On most USG systems it does not work to open the pty's tty here, | |
1731 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1732 | #ifdef O_NOCTTY |
1733 | /* Don't let this terminal become our controlling terminal | |
1734 | (in case we don't have one). */ | |
68c45bf0 | 1735 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1736 | #else |
68c45bf0 | 1737 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1738 | #endif |
1739 | if (forkin < 0) | |
1740 | report_file_error ("Opening pty", Qnil); | |
1741 | #else | |
1742 | forkin = forkout = -1; | |
2af70a0c | 1743 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1744 | pty_flag = 1; |
1745 | } | |
1746 | else | |
1747 | #endif /* HAVE_PTYS */ | |
1748 | #ifdef SKTPAIR | |
1749 | { | |
1750 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv) < 0) | |
1751 | report_file_error ("Opening socketpair", Qnil); | |
1752 | outchannel = inchannel = sv[0]; | |
1753 | forkout = forkin = sv[1]; | |
1754 | } | |
1755 | #else /* not SKTPAIR */ | |
1756 | { | |
fc14013c KH |
1757 | int tem; |
1758 | tem = pipe (sv); | |
1759 | if (tem < 0) | |
1760 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1761 | inchannel = sv[0]; |
1762 | forkout = sv[1]; | |
fc14013c KH |
1763 | tem = pipe (sv); |
1764 | if (tem < 0) | |
1765 | { | |
68c45bf0 PE |
1766 | emacs_close (inchannel); |
1767 | emacs_close (forkout); | |
fc14013c KH |
1768 | report_file_error ("Creating pipe", Qnil); |
1769 | } | |
d0d6b7c5 JB |
1770 | outchannel = sv[1]; |
1771 | forkin = sv[0]; | |
1772 | } | |
1773 | #endif /* not SKTPAIR */ | |
1774 | ||
1775 | #if 0 | |
1776 | /* Replaced by close_process_descs */ | |
1777 | set_exclusive_use (inchannel); | |
1778 | set_exclusive_use (outchannel); | |
1779 | #endif | |
1780 | ||
1781 | /* Stride people say it's a mystery why this is needed | |
1782 | as well as the O_NDELAY, but that it fails without this. */ | |
1783 | #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) | |
1784 | { | |
1785 | int one = 1; | |
1786 | ioctl (inchannel, FIONBIO, &one); | |
1787 | } | |
1788 | #endif | |
1789 | ||
1790 | #ifdef O_NONBLOCK | |
1791 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1792 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1793 | #else |
1794 | #ifdef O_NDELAY | |
1795 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1796 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1797 | #endif |
1798 | #endif | |
1799 | ||
1800 | /* Record this as an active process, with its channels. | |
1801 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1802 | chan_process[inchannel] = process; | |
1d056e64 KH |
1803 | XSETINT (XPROCESS (process)->infd, inchannel); |
1804 | XSETINT (XPROCESS (process)->outfd, outchannel); | |
16782258 JD |
1805 | |
1806 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1807 | It was only used for getting the foreground tty process, so now | |
1808 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1809 | more portable (see USG_SUBTTY_WORKS above). */ | |
1810 | ||
d0d6b7c5 JB |
1811 | XPROCESS (process)->pty_flag = (pty_flag ? Qt : Qnil); |
1812 | XPROCESS (process)->status = Qrun; | |
03f04413 | 1813 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1814 | |
1815 | /* Delay interrupts until we have a chance to store | |
1816 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1817 | #ifdef POSIX_SIGNALS |
1818 | sigemptyset (&blocked); | |
1819 | #ifdef SIGCHLD | |
1820 | sigaddset (&blocked, SIGCHLD); | |
1821 | #endif | |
351e611f | 1822 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1823 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1824 | this sets the parent's signal handlers as well as the child's. | |
1825 | So delay all interrupts whose handlers the child might munge, | |
1826 | and record the current handlers so they can be restored later. */ | |
1827 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1828 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1829 | #ifdef AIX | |
1830 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1831 | #endif | |
351e611f | 1832 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
1833 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
1834 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
1835 | #ifdef SIGCHLD |
1836 | #ifdef BSD4_1 | |
1837 | sighold (SIGCHLD); | |
1838 | #else /* not BSD4_1 */ | |
6df54671 | 1839 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
1840 | sigsetmask (sigmask (SIGCHLD)); |
1841 | #else /* ordinary USG */ | |
1842 | #if 0 | |
1843 | sigchld_deferred = 0; | |
1844 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
1845 | #endif | |
1846 | #endif /* ordinary USG */ | |
1847 | #endif /* not BSD4_1 */ | |
1848 | #endif /* SIGCHLD */ | |
0dc70c33 | 1849 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 1850 | |
3081bf8d | 1851 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1852 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1853 | if (inchannel > max_process_desc) |
1854 | max_process_desc = inchannel; | |
1855 | ||
d0d6b7c5 JB |
1856 | /* Until we store the proper pid, enable sigchld_handler |
1857 | to recognize an unknown pid as standing for this process. | |
1858 | It is very important not to let this `marker' value stay | |
1859 | in the table after this function has returned; if it does | |
1860 | it might cause call-process to hang and subsequent asynchronous | |
1861 | processes to get their return values scrambled. */ | |
1862 | XSETINT (XPROCESS (process)->pid, -1); | |
1863 | ||
ececcbec | 1864 | BLOCK_INPUT; |
177c0ea7 | 1865 | |
d0d6b7c5 JB |
1866 | { |
1867 | /* child_setup must clobber environ on systems with true vfork. | |
1868 | Protect it from permanent change. */ | |
1869 | char **save_environ = environ; | |
1870 | ||
14dc6093 | 1871 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1872 | |
e98d950b | 1873 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1874 | pid = vfork (); |
1875 | if (pid == 0) | |
e98d950b | 1876 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1877 | { |
1878 | int xforkin = forkin; | |
1879 | int xforkout = forkout; | |
1880 | ||
1881 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1882 | but fails to handle all the cases. */ | |
1883 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1884 | sigsetmask (SIGEMPTYMASK); | |
1885 | #endif | |
1886 | ||
1887 | /* Make the pty be the controlling terminal of the process. */ | |
1888 | #ifdef HAVE_PTYS | |
1889 | /* First, disconnect its current controlling terminal. */ | |
1890 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1891 | /* We tried doing setsid only if pty_flag, but it caused |
1892 | process_set_signal to fail on SGI when using a pipe. */ | |
1893 | setsid (); | |
ce4c9c90 | 1894 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 1895 | if (pty_flag) |
39e9ebcd | 1896 | { |
39e9ebcd RS |
1897 | #ifdef TIOCSCTTY |
1898 | /* We ignore the return value | |
1899 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1900 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1901 | #endif |
39e9ebcd | 1902 | } |
d0d6b7c5 | 1903 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1904 | #ifdef USG |
000ab717 | 1905 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1906 | afterwards. Otherwise, we lose our controlling tty which |
1907 | is set when we open the pty. */ | |
1908 | setpgrp (); | |
1909 | #endif /* USG */ | |
1910 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
1911 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
1912 | if (pty_flag && xforkin >= 0) | |
1913 | { | |
1914 | struct termios t; | |
1915 | tcgetattr (xforkin, &t); | |
1916 | t.c_lflag = LDISC1; | |
1917 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1918 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1919 | } |
1920 | #else | |
aafadd9f | 1921 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1922 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1923 | { |
1924 | /* Use new line discipline. */ | |
1925 | int ldisc = NTTYDISC; | |
4458f555 | 1926 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1927 | } |
000ab717 | 1928 | #endif |
9bcf8ec6 | 1929 | #endif |
177c0ea7 | 1930 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1931 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1932 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1933 | if (pty_flag) | |
1934 | { | |
177c0ea7 | 1935 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1936 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1937 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 1938 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 1939 | emacs_close (j); |
5a570e37 | 1940 | #ifndef USG |
d0d6b7c5 JB |
1941 | /* In order to get a controlling terminal on some versions |
1942 | of BSD, it is necessary to put the process in pgrp 0 | |
1943 | before it opens the terminal. */ | |
99c1aeca | 1944 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1945 | setpgid (0, 0); |
1946 | #else | |
d0d6b7c5 | 1947 | setpgrp (0, 0); |
3ea1d291 | 1948 | #endif |
d0d6b7c5 JB |
1949 | #endif |
1950 | } | |
1951 | #endif /* TIOCNOTTY */ | |
1952 | ||
99153b9e | 1953 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1954 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1955 | conditional on TIOCSPGRP, |
1956 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1957 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1958 | that system does seem to need this code, even though | |
1959 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1960 | /* Now close the pty (if we had it open) and reopen it. |
1961 | This makes the pty the controlling terminal of the subprocess. */ | |
1962 | if (pty_flag) | |
1963 | { | |
99e3d726 RS |
1964 | #ifdef SET_CHILD_PTY_PGRP |
1965 | int pgrp = getpid (); | |
1966 | #endif | |
1967 | ||
68c45bf0 PE |
1968 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1969 | would work? */ | |
d0d6b7c5 | 1970 | if (xforkin >= 0) |
68c45bf0 PE |
1971 | emacs_close (xforkin); |
1972 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1973 | |
4aa54ba8 RS |
1974 | if (xforkin < 0) |
1975 | { | |
68c45bf0 PE |
1976 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
1977 | emacs_write (1, pty_name, strlen (pty_name)); | |
1978 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
1979 | _exit (1); |
1980 | } | |
1981 | ||
99e3d726 RS |
1982 | #ifdef SET_CHILD_PTY_PGRP |
1983 | ioctl (xforkin, TIOCSPGRP, &pgrp); | |
1984 | ioctl (xforkout, TIOCSPGRP, &pgrp); | |
1985 | #endif | |
d0d6b7c5 | 1986 | } |
99153b9e | 1987 | #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */ |
e9bf058b | 1988 | |
d0d6b7c5 | 1989 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
1990 | if (pty_flag) |
1991 | { | |
1992 | SETUP_SLAVE_PTY; | |
1993 | } | |
d0d6b7c5 JB |
1994 | #endif /* SETUP_SLAVE_PTY */ |
1995 | #ifdef AIX | |
1996 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
1997 | Now reenable it in the child, so it will die when we want it to. */ | |
1998 | if (pty_flag) | |
1999 | signal (SIGHUP, SIG_DFL); | |
2000 | #endif | |
2001 | #endif /* HAVE_PTYS */ | |
2002 | ||
0dc70c33 KH |
2003 | signal (SIGINT, SIG_DFL); |
2004 | signal (SIGQUIT, SIG_DFL); | |
2005 | ||
2006 | /* Stop blocking signals in the child. */ | |
2007 | #ifdef POSIX_SIGNALS | |
2008 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2009 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2010 | #ifdef SIGCHLD |
2011 | #ifdef BSD4_1 | |
2012 | sigrelse (SIGCHLD); | |
2013 | #else /* not BSD4_1 */ | |
6df54671 | 2014 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2015 | sigsetmask (SIGEMPTYMASK); |
2016 | #else /* ordinary USG */ | |
63528b78 | 2017 | #if 0 |
d0d6b7c5 | 2018 | signal (SIGCHLD, sigchld); |
63528b78 | 2019 | #endif |
d0d6b7c5 JB |
2020 | #endif /* ordinary USG */ |
2021 | #endif /* not BSD4_1 */ | |
2022 | #endif /* SIGCHLD */ | |
0dc70c33 | 2023 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2024 | |
ab01d0a8 RS |
2025 | if (pty_flag) |
2026 | child_setup_tty (xforkout); | |
e98d950b RS |
2027 | #ifdef WINDOWSNT |
2028 | pid = child_setup (xforkin, xforkout, xforkout, | |
2029 | new_argv, 1, current_dir); | |
177c0ea7 | 2030 | #else /* not WINDOWSNT */ |
d0d6b7c5 | 2031 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2032 | new_argv, 1, current_dir); |
e98d950b | 2033 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2034 | } |
2035 | environ = save_environ; | |
2036 | } | |
2037 | ||
ececcbec RS |
2038 | UNBLOCK_INPUT; |
2039 | ||
4a127b3b | 2040 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2041 | if (pid < 0) |
6311cf58 RS |
2042 | { |
2043 | if (forkin >= 0) | |
68c45bf0 | 2044 | emacs_close (forkin); |
6311cf58 | 2045 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2046 | emacs_close (forkout); |
6311cf58 | 2047 | } |
4a127b3b KH |
2048 | else |
2049 | { | |
2050 | /* vfork succeeded. */ | |
2051 | XSETFASTINT (XPROCESS (process)->pid, pid); | |
d0d6b7c5 | 2052 | |
e98d950b | 2053 | #ifdef WINDOWSNT |
4a127b3b | 2054 | register_child (pid, inchannel); |
e98d950b RS |
2055 | #endif /* WINDOWSNT */ |
2056 | ||
4a127b3b KH |
2057 | /* If the subfork execv fails, and it exits, |
2058 | this close hangs. I don't know why. | |
2059 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2060 | { |
2061 | struct atimer *timer; | |
2062 | EMACS_TIME offset; | |
177c0ea7 | 2063 | |
30904ab7 GM |
2064 | stop_polling (); |
2065 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2066 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2067 | |
30904ab7 GM |
2068 | if (forkin >= 0) |
2069 | emacs_close (forkin); | |
2070 | ||
2071 | cancel_atimer (timer); | |
2072 | start_polling (); | |
2073 | } | |
177c0ea7 | 2074 | |
4a127b3b | 2075 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2076 | emacs_close (forkout); |
d0d6b7c5 | 2077 | |
875e6b94 | 2078 | #ifdef HAVE_PTYS |
4a127b3b KH |
2079 | if (pty_flag) |
2080 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2081 | else | |
875e6b94 | 2082 | #endif |
4a127b3b KH |
2083 | XPROCESS (process)->tty_name = Qnil; |
2084 | } | |
3b9a3dfa | 2085 | |
4a127b3b KH |
2086 | /* Restore the signal state whether vfork succeeded or not. |
2087 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2088 | #ifdef POSIX_SIGNALS |
351e611f | 2089 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2090 | /* Restore the parent's signal handlers. */ |
2091 | sigaction (SIGINT, &sigint_action, 0); | |
2092 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2093 | #ifdef AIX | |
2094 | sigaction (SIGHUP, &sighup_action, 0); | |
2095 | #endif | |
351e611f | 2096 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2097 | /* Stop blocking signals in the parent. */ |
2098 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2099 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2100 | #ifdef SIGCHLD |
2101 | #ifdef BSD4_1 | |
2102 | sigrelse (SIGCHLD); | |
2103 | #else /* not BSD4_1 */ | |
6df54671 | 2104 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2105 | sigsetmask (SIGEMPTYMASK); |
2106 | #else /* ordinary USG */ | |
2107 | #if 0 | |
2108 | signal (SIGCHLD, sigchld); | |
2109 | /* Now really handle any of these signals | |
2110 | that came in during this function. */ | |
2111 | if (sigchld_deferred) | |
2112 | kill (getpid (), SIGCHLD); | |
2113 | #endif | |
2114 | #endif /* ordinary USG */ | |
2115 | #endif /* not BSD4_1 */ | |
2116 | #endif /* SIGCHLD */ | |
0dc70c33 | 2117 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2118 | |
2119 | /* Now generate the error if vfork failed. */ | |
2120 | if (pid < 0) | |
2121 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 JB |
2122 | } |
2123 | #endif /* not VMS */ | |
2124 | ||
e690ca94 | 2125 | \f |
d0d6b7c5 JB |
2126 | #ifdef HAVE_SOCKETS |
2127 | ||
e690ca94 KS |
2128 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2129 | The address family of sa is not included in the result. */ | |
2130 | ||
2131 | static Lisp_Object | |
2132 | conv_sockaddr_to_lisp (sa, len) | |
2133 | struct sockaddr *sa; | |
2134 | int len; | |
2135 | { | |
2136 | Lisp_Object address; | |
2137 | int i; | |
2138 | unsigned char *cp; | |
2139 | register struct Lisp_Vector *p; | |
2140 | ||
2141 | switch (sa->sa_family) | |
2142 | { | |
2143 | case AF_INET: | |
2144 | { | |
2145 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2146 | len = sizeof (sin->sin_addr) + 1; | |
2147 | address = Fmake_vector (make_number (len), Qnil); | |
2148 | p = XVECTOR (address); | |
2149 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
2150 | cp = (unsigned char *)&sin->sin_addr; | |
2151 | break; | |
2152 | } | |
2153 | #ifdef HAVE_LOCAL_SOCKETS | |
2154 | case AF_LOCAL: | |
2155 | { | |
fb23673a EZ |
2156 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2157 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2158 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2159 | break; |
fb23673a | 2160 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2161 | } |
2162 | #endif | |
2163 | default: | |
2164 | len -= sizeof (sa->sa_family); | |
2165 | address = Fcons (make_number (sa->sa_family), | |
2166 | Fmake_vector (make_number (len), Qnil)); | |
2167 | p = XVECTOR (XCDR (address)); | |
2168 | cp = (unsigned char *) sa + sizeof (sa->sa_family); | |
2169 | break; | |
2170 | } | |
2171 | ||
2172 | i = 0; | |
2173 | while (i < len) | |
2174 | p->contents[i++] = make_number (*cp++); | |
2175 | ||
2176 | return address; | |
2177 | } | |
2178 | ||
2179 | ||
2180 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2181 | ||
2182 | static int | |
2183 | get_lisp_to_sockaddr_size (address, familyp) | |
2184 | Lisp_Object address; | |
2185 | int *familyp; | |
2186 | { | |
2187 | register struct Lisp_Vector *p; | |
2188 | ||
2189 | if (VECTORP (address)) | |
2190 | { | |
2191 | p = XVECTOR (address); | |
2192 | if (p->size == 5) | |
2193 | { | |
2194 | *familyp = AF_INET; | |
2195 | return sizeof (struct sockaddr_in); | |
2196 | } | |
2197 | } | |
2198 | #ifdef HAVE_LOCAL_SOCKETS | |
2199 | else if (STRINGP (address)) | |
2200 | { | |
2201 | *familyp = AF_LOCAL; | |
2202 | return sizeof (struct sockaddr_un); | |
2203 | } | |
2204 | #endif | |
2205 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2206 | { | |
2207 | struct sockaddr *sa; | |
2208 | *familyp = XINT (XCAR (address)); | |
2209 | p = XVECTOR (XCDR (address)); | |
2210 | return p->size + sizeof (sa->sa_family); | |
2211 | } | |
2212 | return 0; | |
2213 | } | |
2214 | ||
2215 | /* Convert an address object (vector or string) to an internal sockaddr. | |
2216 | Format of address has already been validated by size_lisp_to_sockaddr. */ | |
2217 | ||
2218 | static void | |
2219 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2220 | int family; | |
2221 | Lisp_Object address; | |
2222 | struct sockaddr *sa; | |
2223 | int len; | |
2224 | { | |
2225 | register struct Lisp_Vector *p; | |
34967d0f | 2226 | register unsigned char *cp = NULL; |
e690ca94 KS |
2227 | register int i; |
2228 | ||
2229 | bzero (sa, len); | |
2230 | sa->sa_family = family; | |
2231 | ||
2232 | if (VECTORP (address)) | |
2233 | { | |
2234 | p = XVECTOR (address); | |
2235 | if (family == AF_INET) | |
2236 | { | |
2237 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2238 | len = sizeof (sin->sin_addr) + 1; | |
2239 | i = XINT (p->contents[--len]); | |
2240 | sin->sin_port = htons (i); | |
2241 | cp = (unsigned char *)&sin->sin_addr; | |
2242 | } | |
2243 | } | |
2244 | else if (STRINGP (address)) | |
2245 | { | |
2246 | #ifdef HAVE_LOCAL_SOCKETS | |
2247 | if (family == AF_LOCAL) | |
2248 | { | |
fb23673a | 2249 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2250 | cp = SDATA (address); |
fb23673a EZ |
2251 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2252 | sockun->sun_path[i] = *cp++; | |
e690ca94 KS |
2253 | } |
2254 | #endif | |
2255 | return; | |
2256 | } | |
2257 | else | |
2258 | { | |
2259 | p = XVECTOR (XCDR (address)); | |
2260 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2261 | } | |
2262 | ||
2263 | for (i = 0; i < len; i++) | |
2264 | if (INTEGERP (p->contents[i])) | |
2265 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2266 | } | |
2267 | ||
2268 | #ifdef DATAGRAM_SOCKETS | |
2269 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2270 | 1, 1, 0, | |
2271 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2272 | (process) | |
2273 | Lisp_Object process; | |
2274 | { | |
2275 | int channel; | |
2276 | ||
2277 | CHECK_PROCESS (process); | |
2278 | ||
2279 | if (!DATAGRAM_CONN_P (process)) | |
2280 | return Qnil; | |
2281 | ||
bed9664a | 2282 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2283 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2284 | datagram_address[channel].len); | |
2285 | } | |
2286 | ||
2287 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2288 | 2, 2, 0, | |
2289 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2290 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2291 | (process, address) | |
2292 | Lisp_Object process, address; | |
2293 | { | |
2294 | int channel; | |
2295 | int family, len; | |
2296 | ||
2297 | CHECK_PROCESS (process); | |
2298 | ||
2299 | if (!DATAGRAM_CONN_P (process)) | |
2300 | return Qnil; | |
2301 | ||
bed9664a | 2302 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2303 | |
2304 | len = get_lisp_to_sockaddr_size (address, &family); | |
2305 | if (datagram_address[channel].len != len) | |
2306 | return Qnil; | |
2307 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2308 | return address; | |
2309 | } | |
2310 | #endif | |
2311 | \f | |
2312 | ||
2313 | static struct socket_options { | |
2314 | /* The name of this option. Should be lowercase version of option | |
177c0ea7 | 2315 | name without SO_ prefix. */ |
e690ca94 | 2316 | char *name; |
e690ca94 KS |
2317 | /* Option level SOL_... */ |
2318 | int optlevel; | |
2319 | /* Option number SO_... */ | |
2320 | int optnum; | |
151ec9e2 | 2321 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2ccf3102 | 2322 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; |
e690ca94 KS |
2323 | } socket_options[] = |
2324 | { | |
2325 | #ifdef SO_BINDTODEVICE | |
151ec9e2 | 2326 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2327 | #endif |
2328 | #ifdef SO_BROADCAST | |
2ccf3102 | 2329 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2330 | #endif |
2331 | #ifdef SO_DONTROUTE | |
2ccf3102 | 2332 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2333 | #endif |
2334 | #ifdef SO_KEEPALIVE | |
2ccf3102 | 2335 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2336 | #endif |
2337 | #ifdef SO_LINGER | |
2ccf3102 | 2338 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2339 | #endif |
2340 | #ifdef SO_OOBINLINE | |
2ccf3102 | 2341 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2342 | #endif |
2343 | #ifdef SO_PRIORITY | |
2ccf3102 | 2344 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2345 | #endif |
2346 | #ifdef SO_REUSEADDR | |
2ccf3102 | 2347 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2348 | #endif |
2ccf3102 | 2349 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2350 | }; |
2351 | ||
2ccf3102 | 2352 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2353 | |
2ccf3102 KS |
2354 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2355 | Signals an error if setting a known option fails. | |
2356 | */ | |
e690ca94 KS |
2357 | |
2358 | static int | |
2ccf3102 | 2359 | set_socket_option (s, opt, val) |
e690ca94 | 2360 | int s; |
2ccf3102 | 2361 | Lisp_Object opt, val; |
e690ca94 | 2362 | { |
2ccf3102 KS |
2363 | char *name; |
2364 | struct socket_options *sopt; | |
2365 | int ret = 0; | |
e690ca94 | 2366 | |
2ccf3102 | 2367 | CHECK_SYMBOL (opt); |
e690ca94 | 2368 | |
2ccf3102 KS |
2369 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2370 | for (sopt = socket_options; sopt->name; sopt++) | |
2371 | if (strcmp (name, sopt->name) == 0) | |
2372 | break; | |
e690ca94 | 2373 | |
2ccf3102 KS |
2374 | switch (sopt->opttype) |
2375 | { | |
2376 | case SOPT_BOOL: | |
2377 | { | |
2378 | int optval; | |
2379 | optval = NILP (val) ? 0 : 1; | |
2380 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2381 | &optval, sizeof (optval)); | |
2382 | break; | |
2383 | } | |
e690ca94 | 2384 | |
2ccf3102 KS |
2385 | case SOPT_INT: |
2386 | { | |
2387 | int optval; | |
2388 | if (INTEGERP (val)) | |
2389 | optval = XINT (val); | |
2390 | else | |
2391 | error ("Bad option value for %s", name); | |
2392 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2393 | &optval, sizeof (optval)); | |
2394 | break; | |
2395 | } | |
e690ca94 | 2396 | |
151ec9e2 KS |
2397 | #ifdef SO_BINDTODEVICE |
2398 | case SOPT_IFNAME: | |
2ccf3102 | 2399 | { |
151ec9e2 KS |
2400 | char devname[IFNAMSIZ+1]; |
2401 | ||
2402 | /* This is broken, at least in the Linux 2.4 kernel. | |
2403 | To unbind, the arg must be a zero integer, not the empty string. | |
2404 | This should work on all systems. KFS. 2003-09-23. */ | |
2405 | bzero (devname, sizeof devname); | |
2406 | if (STRINGP (val)) | |
2407 | { | |
2408 | char *arg = (char *) SDATA (val); | |
2409 | int len = min (strlen (arg), IFNAMSIZ); | |
2410 | bcopy (arg, devname, len); | |
2411 | } | |
2412 | else if (!NILP (val)) | |
2ccf3102 KS |
2413 | error ("Bad option value for %s", name); |
2414 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
151ec9e2 KS |
2415 | devname, IFNAMSIZ); |
2416 | break; | |
2ccf3102 | 2417 | } |
151ec9e2 | 2418 | #endif |
e690ca94 | 2419 | |
177c0ea7 | 2420 | #ifdef SO_LINGER |
2ccf3102 KS |
2421 | case SOPT_LINGER: |
2422 | { | |
2423 | struct linger linger; | |
e690ca94 | 2424 | |
2ccf3102 KS |
2425 | linger.l_onoff = 1; |
2426 | linger.l_linger = 0; | |
2427 | if (INTEGERP (val)) | |
2428 | linger.l_linger = XINT (val); | |
2429 | else | |
2430 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2431 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2432 | &linger, sizeof (linger)); | |
2433 | break; | |
2434 | } | |
e690ca94 | 2435 | #endif |
2ccf3102 KS |
2436 | |
2437 | default: | |
2438 | return 0; | |
e690ca94 | 2439 | } |
2ccf3102 KS |
2440 | |
2441 | if (ret < 0) | |
2442 | report_file_error ("Cannot set network option", | |
2443 | Fcons (opt, Fcons (val, Qnil))); | |
2444 | return (1 << sopt->optbit); | |
e690ca94 KS |
2445 | } |
2446 | ||
2ccf3102 KS |
2447 | |
2448 | DEFUN ("set-network-process-option", | |
2449 | Fset_network_process_option, Sset_network_process_option, | |
2450 | 3, 4, 0, | |
2451 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2452 | See `make-network-process' for a list of options and values. | |
2453 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2454 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2455 | (process, option, value, no_error) | |
2456 | Lisp_Object process, option, value; | |
2457 | Lisp_Object no_error; | |
e690ca94 | 2458 | { |
e1283999 | 2459 | int s; |
151ec9e2 | 2460 | struct Lisp_Process *p; |
e690ca94 | 2461 | |
e690ca94 | 2462 | CHECK_PROCESS (process); |
151ec9e2 KS |
2463 | p = XPROCESS (process); |
2464 | if (!NETCONN1_P (p)) | |
2465 | error ("Process is not a network process"); | |
2ccf3102 | 2466 | |
151ec9e2 | 2467 | s = XINT (p->infd); |
2ccf3102 KS |
2468 | if (s < 0) |
2469 | error ("Process is not running"); | |
2470 | ||
2471 | if (set_socket_option (s, option, value)) | |
151ec9e2 KS |
2472 | { |
2473 | p->childp = Fplist_put (p->childp, option, value); | |
2474 | return Qt; | |
2475 | } | |
2ccf3102 KS |
2476 | |
2477 | if (NILP (no_error)) | |
2478 | error ("Unknown or unsupported option"); | |
2479 | ||
2480 | return Qnil; | |
e690ca94 | 2481 | } |
2ccf3102 | 2482 | |
e690ca94 | 2483 | \f |
e690ca94 KS |
2484 | /* A version of request_sigio suitable for a record_unwind_protect. */ |
2485 | ||
2486 | Lisp_Object | |
2487 | unwind_request_sigio (dummy) | |
2488 | Lisp_Object dummy; | |
2489 | { | |
2490 | if (interrupt_input) | |
2491 | request_sigio (); | |
2492 | return Qnil; | |
2493 | } | |
2494 | ||
2495 | /* Create a network stream/datagram client/server process. Treated | |
2496 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2497 | differences are in status display and process deletion. A network |
2498 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2499 | stop/continue it and deactivate/close it via delete-process */ |
2500 | ||
177c0ea7 JB |
2501 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2502 | 0, MANY, 0, | |
e690ca94 KS |
2503 | doc: /* Create and return a network server or client process. |
2504 | ||
fa9d4315 | 2505 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2506 | input and output work as for subprocesses and `delete-process' closes |
2507 | a network connection. However, a network process has no process id, | |
2508 | it cannot be signalled, and the status codes are different from normal | |
2509 | processes. | |
2510 | ||
2511 | Arguments are specified as keyword/argument pairs. The following | |
2512 | arguments are defined: | |
2513 | ||
2514 | :name NAME -- NAME is name for process. It is modified if necessary | |
2515 | to make it unique. | |
2516 | ||
2517 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2518 | with the process. Process output goes at end of that buffer, unless | |
2519 | you specify an output stream or filter function to handle the output. | |
2520 | BUFFER may be also nil, meaning that this process is not associated | |
2521 | with any buffer. | |
2522 | ||
2523 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2524 | address. The symbol `local' specifies the local host. If specified | |
2525 | for a server process, it must be a valid name or address for the local | |
2526 | host, and only clients connecting to that address will be accepted. | |
2527 | ||
2528 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2529 | integer specifying a port number to connect to. If SERVICE is t, | |
2530 | a random port number is selected for the server. | |
2531 | ||
9057ff80 KS |
2532 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
2533 | stream type connection, `datagram' creates a datagram type connection. | |
2534 | ||
e690ca94 KS |
2535 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
2536 | service specified by HOST and SERVICE. The default address family is | |
2537 | Inet (or IPv4) for the host and port number specified by HOST and | |
2538 | SERVICE. Other address families supported are: | |
2539 | local -- for a local (i.e. UNIX) address specified by SERVICE. | |
2540 | ||
2541 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2542 | This parameter is ignored when opening a client process. When specified | |
2543 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2544 | ||
2545 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2546 | connection. This parameter is ignored when opening a stream server | |
2547 | process. For a datagram server process, it specifies the initial | |
2548 | setting of the remote datagram address. When specified for a client | |
2549 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2550 | ||
2551 | The format of ADDRESS depends on the address family: | |
2552 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2553 | corresponding to numeric IP address A.B.C.D and port number P. | |
2554 | - A local address is represented as a string with the address in the | |
2555 | local address space. | |
2556 | - An "unsupported family" address is represented by a cons (F . AV) | |
2557 | where F is the family number and AV is a vector containing the socket | |
2558 | address data with one element per address data byte. Do not rely on | |
2559 | this format in portable code, as it may depend on implementation | |
2560 | defined constants, data sizes, and data structure alignment. | |
2561 | ||
2ccf3102 KS |
2562 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2563 | system used for both reading and writing for this process. If CODING | |
2564 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2565 | ENCODING is used for writing. | |
e690ca94 KS |
2566 | |
2567 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2568 | return without waiting for the connection to complete; instead, the | |
2569 | sentinel function will be called with second arg matching "open" (if | |
2570 | successful) or "failed" when the connect completes. Default is to use | |
2571 | a blocking connect (i.e. wait) for stream type connections. | |
2572 | ||
2573 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
2574 | running when emacs is exited. | |
2575 | ||
2576 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2577 | In the stopped state, a server process does not accept new | |
2578 | connections, and a client process does not handle incoming traffic. | |
2579 | The stopped state is cleared by `continue-process' and set by | |
2580 | `stop-process'. | |
2581 | ||
2582 | :filter FILTER -- Install FILTER as the process filter. | |
2583 | ||
7392e23c KS |
2584 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2585 | process filter are multibyte, otherwise they are unibyte. | |
2586 | If this keyword is not specified, the strings are multibyte iff | |
03f04413 KH |
2587 | `default-enable-multibyte-characters' is non-nil. |
2588 | ||
e690ca94 KS |
2589 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2590 | ||
2591 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2592 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2593 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2594 | is the server process, CLIENT is the new process for the connection, | |
2595 | and MESSAGE is a string. | |
2596 | ||
faa7db08 | 2597 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2598 | |
2ccf3102 | 2599 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2600 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
2ccf3102 KS |
2601 | If QLEN is an integer, it is used as the max. length of the server's |
2602 | pending connection queue (also known as the backlog); the default | |
2603 | queue length is 5. Default is to create a client process. | |
2604 | ||
2605 | The following network options can be specified for this connection: | |
2606 | ||
2ccf3102 KS |
2607 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. |
2608 | :dontroute BOOL -- Only send to directly connected hosts. | |
2609 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2610 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2611 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2612 | :priority INT -- Set protocol defined priority for sent packets. | |
2613 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2614 | (this is allowed by default for a server process). | |
151ec9e2 KS |
2615 | :bindtodevice NAME -- bind to interface NAME. Using this may require |
2616 | special privileges on some systems. | |
2ccf3102 KS |
2617 | |
2618 | Consult the relevant system programmer's manual pages for more | |
2619 | information on using these options. | |
2620 | ||
2621 | ||
2622 | A server process will listen for and accept connections from clients. | |
2623 | When a client connection is accepted, a new network process is created | |
2624 | for the connection with the following parameters: | |
e690ca94 | 2625 | |
e690ca94 KS |
2626 | - The client's process name is constructed by concatenating the server |
2627 | process' NAME and a client identification string. | |
2628 | - If the FILTER argument is non-nil, the client process will not get a | |
2629 | separate process buffer; otherwise, the client's process buffer is a newly | |
2630 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2631 | NAME concatenated with the client identification string. |
e690ca94 KS |
2632 | - The connection type and the process filter and sentinel parameters are |
2633 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2634 | - The client process' contact info is set according to the client's | |
2635 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2636 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2637 | |
2638 | Notice that the FILTER and SENTINEL args are never used directly by | |
2639 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2640 | the server process, but via the optional :log function, accepted (and |
2641 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2642 | |
365aee82 KS |
2643 | The original argument list, modified with the actual connection |
2644 | information, is available via the `process-contact' function. | |
365aee82 | 2645 | |
fa9d4315 | 2646 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
2647 | (nargs, args) |
2648 | int nargs; | |
2649 | Lisp_Object *args; | |
d0d6b7c5 JB |
2650 | { |
2651 | Lisp_Object proc; | |
e690ca94 KS |
2652 | Lisp_Object contact; |
2653 | struct Lisp_Process *p; | |
70dbdb36 | 2654 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2655 | struct addrinfo ai, *res, *lres; |
2656 | struct addrinfo hints; | |
2657 | char *portstring, portbuf[128]; | |
70dbdb36 | 2658 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2659 | struct _emacs_addrinfo |
2660 | { | |
2661 | int ai_family; | |
2662 | int ai_socktype; | |
2663 | int ai_protocol; | |
2664 | int ai_addrlen; | |
2665 | struct sockaddr *ai_addr; | |
2666 | struct _emacs_addrinfo *ai_next; | |
2667 | } ai, *res, *lres; | |
418b48fd | 2668 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2669 | struct sockaddr_in address_in; |
2670 | #ifdef HAVE_LOCAL_SOCKETS | |
2671 | struct sockaddr_un address_un; | |
2672 | #endif | |
2673 | int port; | |
dd2a17ab KS |
2674 | int ret = 0; |
2675 | int xerrno = 0; | |
418b48fd | 2676 | int s = -1, outch, inch; |
e690ca94 | 2677 | struct gcpro gcpro1; |
e333e864 | 2678 | int retry = 0; |
aed13378 | 2679 | int count = SPECPDL_INDEX (); |
5684cd6e | 2680 | int count1; |
e690ca94 KS |
2681 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2682 | Lisp_Object tem; | |
2683 | Lisp_Object name, buffer, host, service, address; | |
2684 | Lisp_Object filter, sentinel; | |
2685 | int is_non_blocking_client = 0; | |
2ccf3102 | 2686 | int is_server = 0, backlog = 5; |
9057ff80 | 2687 | int socktype; |
e690ca94 KS |
2688 | int family = -1; |
2689 | ||
2690 | if (nargs == 0) | |
2691 | return Qnil; | |
dd2a17ab | 2692 | |
e690ca94 KS |
2693 | /* Save arguments for process-contact and clone-process. */ |
2694 | contact = Flist (nargs, args); | |
2695 | GCPRO1 (contact); | |
2696 | ||
bff3ed0a RS |
2697 | #ifdef WINDOWSNT |
2698 | /* Ensure socket support is loaded if available. */ | |
2699 | init_winsock (TRUE); | |
2700 | #endif | |
2701 | ||
9057ff80 KS |
2702 | /* :type TYPE (nil: stream, datagram */ |
2703 | tem = Fplist_get (contact, QCtype); | |
2704 | if (NILP (tem)) | |
2705 | socktype = SOCK_STREAM; | |
2706 | #ifdef DATAGRAM_SOCKETS | |
2707 | else if (EQ (tem, Qdatagram)) | |
2708 | socktype = SOCK_DGRAM; | |
e690ca94 | 2709 | #endif |
9057ff80 KS |
2710 | else |
2711 | error ("Unsupported connection type"); | |
e690ca94 KS |
2712 | |
2713 | /* :server BOOL */ | |
2714 | tem = Fplist_get (contact, QCserver); | |
2715 | if (!NILP (tem)) | |
2716 | { | |
75728599 JR |
2717 | /* Don't support network sockets when non-blocking mode is |
2718 | not available, since a blocked Emacs is not useful. */ | |
2719 | #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY)) | |
e690ca94 KS |
2720 | error ("Network servers not supported"); |
2721 | #else | |
2722 | is_server = 1; | |
2ccf3102 KS |
2723 | if (INTEGERP (tem)) |
2724 | backlog = XINT (tem); | |
e690ca94 KS |
2725 | #endif |
2726 | } | |
2727 | ||
2728 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2729 | QCaddress = is_server ? QClocal : QCremote; | |
2730 | ||
2731 | /* :wait BOOL */ | |
2732 | if (!is_server && socktype == SOCK_STREAM | |
2733 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) | |
2734 | { | |
2735 | #ifndef NON_BLOCKING_CONNECT | |
2736 | error ("Non-blocking connect not supported"); | |
2737 | #else | |
2738 | is_non_blocking_client = 1; | |
2739 | #endif | |
2740 | } | |
2741 | ||
2742 | name = Fplist_get (contact, QCname); | |
2743 | buffer = Fplist_get (contact, QCbuffer); | |
2744 | filter = Fplist_get (contact, QCfilter); | |
2745 | sentinel = Fplist_get (contact, QCsentinel); | |
2746 | ||
b7826503 | 2747 | CHECK_STRING (name); |
e690ca94 KS |
2748 | |
2749 | #ifdef TERM | |
2750 | /* Let's handle TERM before things get complicated ... */ | |
2751 | host = Fplist_get (contact, QChost); | |
b7826503 | 2752 | CHECK_STRING (host); |
177c0ea7 | 2753 | |
e690ca94 KS |
2754 | service = Fplist_get (contact, QCservice); |
2755 | if (INTEGERP (service)) | |
2756 | port = htons ((unsigned short) XINT (service)); | |
2757 | else | |
2758 | { | |
2759 | struct servent *svc_info; | |
2760 | CHECK_STRING (service); | |
d5db4077 | 2761 | svc_info = getservbyname (SDATA (service), "tcp"); |
e690ca94 | 2762 | if (svc_info == 0) |
d5db4077 | 2763 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2764 | port = svc_info->s_port; |
2765 | } | |
2766 | ||
2767 | s = connect_server (0); | |
2768 | if (s < 0) | |
2769 | report_file_error ("error creating socket", Fcons (name, Qnil)); | |
d5db4077 | 2770 | send_command (s, C_PORT, 0, "%s:%d", SDATA (host), ntohs (port)); |
e690ca94 KS |
2771 | send_command (s, C_DUMB, 1, 0); |
2772 | ||
2773 | #else /* not TERM */ | |
2774 | ||
2775 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ | |
2776 | ai.ai_socktype = socktype; | |
2777 | ai.ai_protocol = 0; | |
2778 | ai.ai_next = NULL; | |
2779 | res = &ai; | |
a319f7c1 | 2780 | |
e690ca94 KS |
2781 | /* :local ADDRESS or :remote ADDRESS */ |
2782 | address = Fplist_get (contact, QCaddress); | |
2783 | if (!NILP (address)) | |
a319f7c1 | 2784 | { |
e690ca94 KS |
2785 | host = service = Qnil; |
2786 | ||
2787 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2788 | error ("Malformed :address"); | |
2789 | ai.ai_family = family; | |
2790 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2791 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2792 | goto open_socket; | |
a319f7c1 | 2793 | } |
e690ca94 KS |
2794 | |
2795 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2796 | tem = Fplist_get (contact, QCfamily); | |
2797 | if (INTEGERP (tem)) | |
2798 | family = XINT (tem); | |
a319f7c1 KH |
2799 | else |
2800 | { | |
e690ca94 KS |
2801 | if (NILP (tem)) |
2802 | family = AF_INET; | |
2803 | #ifdef HAVE_LOCAL_SOCKETS | |
2804 | else if (EQ (tem, Qlocal)) | |
2805 | family = AF_LOCAL; | |
2806 | #endif | |
a319f7c1 | 2807 | } |
e690ca94 KS |
2808 | if (family < 0) |
2809 | error ("Unknown address family"); | |
2810 | ai.ai_family = family; | |
2811 | ||
2812 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2813 | service = Fplist_get (contact, QCservice); | |
2814 | ||
2815 | #ifdef HAVE_LOCAL_SOCKETS | |
2816 | if (family == AF_LOCAL) | |
d0d6b7c5 | 2817 | { |
e690ca94 KS |
2818 | /* Host is not used. */ |
2819 | host = Qnil; | |
b7826503 | 2820 | CHECK_STRING (service); |
e690ca94 KS |
2821 | bzero (&address_un, sizeof address_un); |
2822 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 2823 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
2824 | ai.ai_addr = (struct sockaddr *) &address_un; |
2825 | ai.ai_addrlen = sizeof address_un; | |
2826 | goto open_socket; | |
d0d6b7c5 | 2827 | } |
e690ca94 | 2828 | #endif |
a319f7c1 | 2829 | |
e690ca94 KS |
2830 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
2831 | host = Fplist_get (contact, QChost); | |
2832 | if (!NILP (host)) | |
2833 | { | |
2834 | if (EQ (host, Qlocal)) | |
2835 | host = build_string ("localhost"); | |
2836 | CHECK_STRING (host); | |
2837 | } | |
d0d6b7c5 | 2838 | |
798b64bb KH |
2839 | /* Slow down polling to every ten seconds. |
2840 | Some kernels have a bug which causes retrying connect to fail | |
2841 | after a connect. Polling can interfere with gethostbyname too. */ | |
2842 | #ifdef POLL_FOR_INPUT | |
e690ca94 KS |
2843 | if (socktype == SOCK_STREAM) |
2844 | { | |
2845 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
2846 | bind_polling_period (10); | |
2847 | } | |
798b64bb KH |
2848 | #endif |
2849 | ||
a319f7c1 | 2850 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2851 | /* If we have a host, use getaddrinfo to resolve both host and service. |
2852 | Otherwise, use getservbyname to lookup the service. */ | |
2853 | if (!NILP (host)) | |
2854 | { | |
2855 | ||
2856 | /* SERVICE can either be a string or int. | |
2857 | Convert to a C string for later use by getaddrinfo. */ | |
2858 | if (EQ (service, Qt)) | |
2859 | portstring = "0"; | |
2860 | else if (INTEGERP (service)) | |
2861 | { | |
2862 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
2863 | portstring = portbuf; | |
2864 | } | |
2865 | else | |
2866 | { | |
2867 | CHECK_STRING (service); | |
d5db4077 | 2868 | portstring = SDATA (service); |
e690ca94 KS |
2869 | } |
2870 | ||
2871 | immediate_quit = 1; | |
2872 | QUIT; | |
2873 | memset (&hints, 0, sizeof (hints)); | |
2874 | hints.ai_flags = 0; | |
2875 | hints.ai_family = NILP (Fplist_member (contact, QCfamily)) ? AF_UNSPEC : family; | |
2876 | hints.ai_socktype = socktype; | |
2877 | hints.ai_protocol = 0; | |
d5db4077 | 2878 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 2879 | if (ret) |
f6270f62 | 2880 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 2881 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 2882 | #else |
d5db4077 | 2883 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 2884 | #endif |
e690ca94 | 2885 | immediate_quit = 0; |
a319f7c1 | 2886 | |
e690ca94 KS |
2887 | goto open_socket; |
2888 | } | |
2889 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 2890 | |
e690ca94 KS |
2891 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
2892 | has been specified (e.g. for a local server process). */ | |
2893 | ||
2894 | if (EQ (service, Qt)) | |
2895 | port = 0; | |
2896 | else if (INTEGERP (service)) | |
2897 | port = htons ((unsigned short) XINT (service)); | |
2898 | else | |
616da37c | 2899 | { |
e690ca94 KS |
2900 | struct servent *svc_info; |
2901 | CHECK_STRING (service); | |
177c0ea7 | 2902 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
2903 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
2904 | if (svc_info == 0) | |
d5db4077 | 2905 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2906 | port = svc_info->s_port; |
2907 | } | |
2908 | ||
2909 | bzero (&address_in, sizeof address_in); | |
2910 | address_in.sin_family = family; | |
2911 | address_in.sin_addr.s_addr = INADDR_ANY; | |
2912 | address_in.sin_port = port; | |
2913 | ||
2914 | #ifndef HAVE_GETADDRINFO | |
2915 | if (!NILP (host)) | |
2916 | { | |
2917 | struct hostent *host_info_ptr; | |
2918 | ||
2919 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
2920 | as it may `hang' emacs for a very long time. */ | |
5d6c2aa3 RS |
2921 | immediate_quit = 1; |
2922 | QUIT; | |
d5db4077 | 2923 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 2924 | immediate_quit = 0; |
177c0ea7 | 2925 | |
e690ca94 KS |
2926 | if (host_info_ptr) |
2927 | { | |
2928 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
2929 | host_info_ptr->h_length); | |
2930 | family = host_info_ptr->h_addrtype; | |
2931 | address_in.sin_family = family; | |
2932 | } | |
2933 | else | |
2934 | /* Attempt to interpret host as numeric inet address */ | |
2935 | { | |
2936 | IN_ADDR numeric_addr; | |
d5db4077 | 2937 | numeric_addr = inet_addr ((char *) SDATA (host)); |
e690ca94 | 2938 | if (NUMERIC_ADDR_ERROR) |
d5db4077 | 2939 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 2940 | |
e690ca94 KS |
2941 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
2942 | sizeof (address_in.sin_addr)); | |
2943 | } | |
d0d6b7c5 | 2944 | |
e690ca94 | 2945 | } |
dd2a17ab | 2946 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 2947 | |
e690ca94 KS |
2948 | ai.ai_family = family; |
2949 | ai.ai_addr = (struct sockaddr *) &address_in; | |
2950 | ai.ai_addrlen = sizeof address_in; | |
2951 | ||
2952 | open_socket: | |
2953 | ||
2954 | /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR) | |
2955 | when connect is interrupted. So let's not let it get interrupted. | |
2956 | Note we do not turn off polling, because polling is only used | |
2957 | when not interrupt_input, and thus not normally used on the systems | |
2958 | which have this bug. On systems which use polling, there's no way | |
2959 | to quit if polling is turned off. */ | |
2960 | if (interrupt_input | |
2961 | && !is_server && socktype == SOCK_STREAM) | |
2962 | { | |
2963 | /* Comment from KFS: The original open-network-stream code | |
2964 | didn't unwind protect this, but it seems like the proper | |
2965 | thing to do. In any case, I don't see how it could harm to | |
2966 | do this -- and it makes cleanup (using unbind_to) easier. */ | |
2967 | record_unwind_protect (unwind_request_sigio, Qnil); | |
2968 | unrequest_sigio (); | |
2969 | } | |
2970 | ||
dd2a17ab | 2971 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 2972 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 2973 | s = -1; |
457a9bee | 2974 | |
dd2a17ab KS |
2975 | for (lres = res; lres; lres = lres->ai_next) |
2976 | { | |
2ccf3102 KS |
2977 | int optn, optbits; |
2978 | ||
dd2a17ab KS |
2979 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
2980 | if (s < 0) | |
2981 | { | |
2982 | xerrno = errno; | |
2983 | continue; | |
2984 | } | |
0f2ee0c1 | 2985 | |
e690ca94 KS |
2986 | #ifdef DATAGRAM_SOCKETS |
2987 | if (!is_server && socktype == SOCK_DGRAM) | |
2988 | break; | |
2989 | #endif /* DATAGRAM_SOCKETS */ | |
2990 | ||
dd2a17ab | 2991 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 2992 | if (is_non_blocking_client) |
dd2a17ab KS |
2993 | { |
2994 | #ifdef O_NONBLOCK | |
2995 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
2996 | #else | |
2997 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
2998 | #endif | |
2999 | if (ret < 0) | |
3000 | { | |
3001 | xerrno = errno; | |
3002 | emacs_close (s); | |
3003 | s = -1; | |
3004 | continue; | |
3005 | } | |
3006 | } | |
3007 | #endif | |
177c0ea7 | 3008 | |
dd2a17ab | 3009 | /* Make us close S if quit. */ |
dd2a17ab KS |
3010 | record_unwind_protect (close_file_unwind, make_number (s)); |
3011 | ||
2ccf3102 KS |
3012 | /* Parse network options in the arg list. |
3013 | We simply ignore anything which isn't a known option (including other keywords). | |
3014 | An error is signalled if setting a known option fails. */ | |
3015 | for (optn = optbits = 0; optn < nargs-1; optn += 2) | |
3016 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3017 | ||
e690ca94 KS |
3018 | if (is_server) |
3019 | { | |
3020 | /* Configure as a server socket. */ | |
2ccf3102 KS |
3021 | |
3022 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3023 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3024 | #ifdef HAVE_LOCAL_SOCKETS |
3025 | if (family != AF_LOCAL) | |
3026 | #endif | |
2ccf3102 KS |
3027 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3028 | { | |
3029 | int optval = 1; | |
3030 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3031 | report_file_error ("Cannot set reuse option on server socket.", Qnil); | |
3032 | } | |
177c0ea7 | 3033 | |
e690ca94 KS |
3034 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3035 | report_file_error ("Cannot bind server socket", Qnil); | |
3036 | ||
3037 | #ifdef HAVE_GETSOCKNAME | |
3038 | if (EQ (service, Qt)) | |
3039 | { | |
3040 | struct sockaddr_in sa1; | |
3041 | int len1 = sizeof (sa1); | |
3042 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3043 | { | |
3044 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3045 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3046 | contact = Fplist_put (contact, QCservice, service); |
3047 | } | |
3048 | } | |
3049 | #endif | |
3050 | ||
2ccf3102 | 3051 | if (socktype == SOCK_STREAM && listen (s, backlog)) |
e690ca94 KS |
3052 | report_file_error ("Cannot listen on server socket", Qnil); |
3053 | ||
3054 | break; | |
3055 | } | |
3056 | ||
3057 | retry_connect: | |
dd2a17ab KS |
3058 | |
3059 | immediate_quit = 1; | |
3060 | QUIT; | |
3061 | ||
3062 | /* This turns off all alarm-based interrupts; the | |
3063 | bind_polling_period call above doesn't always turn all the | |
3064 | short-interval ones off, especially if interrupt_input is | |
3065 | set. | |
3066 | ||
3067 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3068 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3069 | |
3070 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3071 | ||
f40f9848 | 3072 | turn_on_atimers (0); |
dd2a17ab KS |
3073 | |
3074 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3075 | xerrno = errno; | |
3076 | ||
f40f9848 | 3077 | turn_on_atimers (1); |
dd2a17ab KS |
3078 | |
3079 | if (ret == 0 || xerrno == EISCONN) | |
3080 | { | |
dd2a17ab KS |
3081 | /* The unwind-protect will be discarded afterwards. |
3082 | Likewise for immediate_quit. */ | |
3083 | break; | |
3084 | } | |
3085 | ||
3086 | #ifdef NON_BLOCKING_CONNECT | |
3087 | #ifdef EINPROGRESS | |
e690ca94 | 3088 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3089 | break; |
3090 | #else | |
3091 | #ifdef EWOULDBLOCK | |
e690ca94 | 3092 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3093 | break; |
3094 | #endif | |
3095 | #endif | |
3096 | #endif | |
e333e864 | 3097 | |
0f2ee0c1 RS |
3098 | immediate_quit = 0; |
3099 | ||
dd2a17ab | 3100 | if (xerrno == EINTR) |
e690ca94 | 3101 | goto retry_connect; |
dd2a17ab | 3102 | if (xerrno == EADDRINUSE && retry < 20) |
e333e864 | 3103 | { |
4590788a RS |
3104 | /* A delay here is needed on some FreeBSD systems, |
3105 | and it is harmless, since this retrying takes time anyway | |
3106 | and should be infrequent. */ | |
3107 | Fsleep_for (make_number (1), Qnil); | |
e333e864 | 3108 | retry++; |
e690ca94 | 3109 | goto retry_connect; |
e333e864 RS |
3110 | } |
3111 | ||
dd2a17ab | 3112 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3113 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3114 | emacs_close (s); |
dd2a17ab KS |
3115 | s = -1; |
3116 | } | |
457a9bee | 3117 | |
e690ca94 KS |
3118 | if (s >= 0) |
3119 | { | |
3120 | #ifdef DATAGRAM_SOCKETS | |
3121 | if (socktype == SOCK_DGRAM) | |
3122 | { | |
3123 | if (datagram_address[s].sa) | |
3124 | abort (); | |
3125 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3126 | datagram_address[s].len = lres->ai_addrlen; | |
3127 | if (is_server) | |
3128 | { | |
3129 | Lisp_Object remote; | |
3130 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3131 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3132 | { | |
3133 | int rfamily, rlen; | |
3134 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3135 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3136 | conv_lisp_to_sockaddr (rfamily, remote, | |
3137 | datagram_address[s].sa, rlen); | |
3138 | } | |
3139 | } | |
3140 | else | |
3141 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3142 | } | |
3143 | #endif | |
177c0ea7 | 3144 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3145 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3146 | #ifdef HAVE_GETSOCKNAME |
3147 | if (!is_server) | |
3148 | { | |
3149 | struct sockaddr_in sa1; | |
3150 | int len1 = sizeof (sa1); | |
3151 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3152 | contact = Fplist_put (contact, QClocal, | |
3153 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3154 | } | |
3155 | #endif | |
e690ca94 KS |
3156 | } |
3157 | ||
dd2a17ab | 3158 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3159 | if (res != &ai) |
3160 | freeaddrinfo (res); | |
dd2a17ab KS |
3161 | #endif |
3162 | ||
e690ca94 KS |
3163 | immediate_quit = 0; |
3164 | ||
3165 | /* Discard the unwind protect for closing S, if any. */ | |
3166 | specpdl_ptr = specpdl + count1; | |
3167 | ||
3168 | /* Unwind bind_polling_period and request_sigio. */ | |
3169 | unbind_to (count, Qnil); | |
3170 | ||
dd2a17ab KS |
3171 | if (s < 0) |
3172 | { | |
dd2a17ab KS |
3173 | /* If non-blocking got this far - and failed - assume non-blocking is |
3174 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3175 | the normal blocking calls to open-network-stream handles this error |
3176 | better. */ | |
3177 | if (is_non_blocking_client) | |
dd2a17ab | 3178 | return Qnil; |
dd2a17ab | 3179 | |
d0d6b7c5 | 3180 | errno = xerrno; |
e690ca94 KS |
3181 | if (is_server) |
3182 | report_file_error ("make server process failed", contact); | |
3183 | else | |
3184 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3185 | } |
44ade2e9 | 3186 | |
e690ca94 | 3187 | #endif /* not TERM */ |
d0d6b7c5 JB |
3188 | |
3189 | inch = s; | |
59f23005 | 3190 | outch = s; |
d0d6b7c5 JB |
3191 | |
3192 | if (!NILP (buffer)) | |
3193 | buffer = Fget_buffer_create (buffer); | |
3194 | proc = make_process (name); | |
3195 | ||
3196 | chan_process[inch] = proc; | |
3197 | ||
3198 | #ifdef O_NONBLOCK | |
3199 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3200 | #else | |
3201 | #ifdef O_NDELAY | |
3202 | fcntl (inch, F_SETFL, O_NDELAY); | |
3203 | #endif | |
3204 | #endif | |
3205 | ||
e690ca94 KS |
3206 | p = XPROCESS (proc); |
3207 | ||
3208 | p->childp = contact; | |
faa7db08 | 3209 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
177c0ea7 | 3210 | |
e690ca94 KS |
3211 | p->buffer = buffer; |
3212 | p->sentinel = sentinel; | |
3213 | p->filter = filter; | |
03f04413 KH |
3214 | p->filter_multibyte = buffer_defaults.enable_multibyte_characters; |
3215 | /* Override the above only if :filter-multibyte is specified. */ | |
3216 | if (! NILP (Fplist_member (contact, QCfilter_multibyte))) | |
3217 | p->filter_multibyte = Fplist_get (contact, QCfilter_multibyte); | |
e690ca94 KS |
3218 | p->log = Fplist_get (contact, QClog); |
3219 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
3220 | p->kill_without_query = Qt; | |
3221 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) | |
3222 | p->command = Qt; | |
3223 | p->pid = Qnil; | |
3224 | XSETINT (p->infd, inch); | |
3225 | XSETINT (p->outfd, outch); | |
3226 | if (is_server && socktype == SOCK_STREAM) | |
3227 | p->status = Qlisten; | |
dd2a17ab KS |
3228 | |
3229 | #ifdef NON_BLOCKING_CONNECT | |
e690ca94 | 3230 | if (is_non_blocking_client) |
dd2a17ab KS |
3231 | { |
3232 | /* We may get here if connect did succeed immediately. However, | |
3233 | in that case, we still need to signal this like a non-blocking | |
3234 | connection. */ | |
e690ca94 | 3235 | p->status = Qconnect; |
dd2a17ab KS |
3236 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3237 | { | |
3238 | FD_SET (inch, &connect_wait_mask); | |
3239 | num_pending_connects++; | |
3240 | } | |
3241 | } | |
3242 | else | |
3243 | #endif | |
e690ca94 KS |
3244 | /* A server may have a client filter setting of Qt, but it must |
3245 | still listen for incoming connects unless it is stopped. */ | |
3246 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3247 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3248 | { |
3249 | FD_SET (inch, &input_wait_mask); | |
3250 | FD_SET (inch, &non_keyboard_wait_mask); | |
3251 | } | |
3252 | ||
7d0e672e RS |
3253 | if (inch > max_process_desc) |
3254 | max_process_desc = inch; | |
d0d6b7c5 | 3255 | |
e690ca94 KS |
3256 | tem = Fplist_member (contact, QCcoding); |
3257 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3258 | tem = Qnil; /* No error message (too late!). */ | |
3259 | ||
67918941 RS |
3260 | { |
3261 | /* Setup coding systems for communicating with the network stream. */ | |
3262 | struct gcpro gcpro1; | |
3263 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3264 | Lisp_Object coding_systems = Qt; | |
3265 | Lisp_Object args[5], val; | |
3266 | ||
e690ca94 | 3267 | if (!NILP (tem)) |
2ccf3102 KS |
3268 | { |
3269 | val = XCAR (XCDR (tem)); | |
3270 | if (CONSP (val)) | |
3271 | val = XCAR (val); | |
3272 | } | |
e690ca94 | 3273 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3274 | val = Vcoding_system_for_read; |
41d03b9a GM |
3275 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3276 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3277 | /* We dare not decode end-of-line format by setting VAL to |
3278 | Qraw_text, because the existing Emacs Lisp libraries | |
3279 | assume that they receive bare code including a sequene of | |
3280 | CR LF. */ | |
3281 | val = Qnil; | |
3282 | else | |
3283 | { | |
991234f0 KS |
3284 | if (NILP (host) || NILP (service)) |
3285 | coding_systems = Qnil; | |
3286 | else | |
3287 | { | |
3288 | args[0] = Qopen_network_stream, args[1] = name, | |
3289 | args[2] = buffer, args[3] = host, args[4] = service; | |
3290 | GCPRO1 (proc); | |
3291 | coding_systems = Ffind_operation_coding_system (5, args); | |
3292 | UNGCPRO; | |
3293 | } | |
67918941 | 3294 | if (CONSP (coding_systems)) |
70949dac | 3295 | val = XCAR (coding_systems); |
67918941 | 3296 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3297 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3298 | else |
3299 | val = Qnil; | |
3300 | } | |
e690ca94 | 3301 | p->decode_coding_system = val; |
0fa1789e | 3302 | |
e690ca94 | 3303 | if (!NILP (tem)) |
2ccf3102 KS |
3304 | { |
3305 | val = XCAR (XCDR (tem)); | |
3306 | if (CONSP (val)) | |
3307 | val = XCDR (val); | |
3308 | } | |
e690ca94 | 3309 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3310 | val = Vcoding_system_for_write; |
3311 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3312 | val = Qnil; | |
3313 | else | |
3314 | { | |
3315 | if (EQ (coding_systems, Qt)) | |
3316 | { | |
991234f0 KS |
3317 | if (NILP (host) || NILP (service)) |
3318 | coding_systems = Qnil; | |
3319 | else | |
3320 | { | |
3321 | args[0] = Qopen_network_stream, args[1] = name, | |
3322 | args[2] = buffer, args[3] = host, args[4] = service; | |
3323 | GCPRO1 (proc); | |
3324 | coding_systems = Ffind_operation_coding_system (5, args); | |
3325 | UNGCPRO; | |
3326 | } | |
67918941 RS |
3327 | } |
3328 | if (CONSP (coding_systems)) | |
70949dac | 3329 | val = XCDR (coding_systems); |
67918941 | 3330 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3331 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3332 | else |
3333 | val = Qnil; | |
3334 | } | |
e690ca94 | 3335 | p->encode_coding_system = val; |
67918941 | 3336 | } |
03f04413 | 3337 | setup_process_coding_systems (proc); |
0fa1789e | 3338 | |
e690ca94 KS |
3339 | p->decoding_buf = make_uninit_string (0); |
3340 | p->decoding_carryover = make_number (0); | |
3341 | p->encoding_buf = make_uninit_string (0); | |
3342 | p->encoding_carryover = make_number (0); | |
0fa1789e | 3343 | |
e690ca94 KS |
3344 | p->inherit_coding_system_flag |
3345 | = (!NILP (tem) || NILP (buffer) || !inherit_process_coding_system | |
aa91317a | 3346 | ? Qnil : Qt); |
52a1b894 | 3347 | |
d0d6b7c5 JB |
3348 | UNGCPRO; |
3349 | return proc; | |
3350 | } | |
3351 | #endif /* HAVE_SOCKETS */ | |
3352 | ||
161933c7 | 3353 | \f |
b8c7fd71 | 3354 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
161933c7 KS |
3355 | |
3356 | #ifdef SIOCGIFCONF | |
3357 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3358 | doc: /* Return an alist of all network interfaces and their network address. | |
3359 | Each element is a cons, the car of which is a string containing the | |
3360 | interface name, and the cdr is the network address in internal | |
e1283999 | 3361 | format; see the description of ADDRESS in `make-network-process'. */) |
161933c7 KS |
3362 | () |
3363 | { | |
3364 | struct ifconf ifconf; | |
3365 | struct ifreq *ifreqs = NULL; | |
3366 | int ifaces = 0; | |
3367 | int buf_size, s; | |
3368 | Lisp_Object res; | |
3369 | ||
3370 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3371 | if (s < 0) | |
3372 | return Qnil; | |
3373 | ||
3374 | again: | |
3375 | ifaces += 25; | |
3376 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3377 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3378 | if (!ifreqs) | |
3379 | { | |
3380 | close (s); | |
3381 | return Qnil; | |
3382 | } | |
3383 | ||
3384 | ifconf.ifc_len = buf_size; | |
3385 | ifconf.ifc_req = ifreqs; | |
3386 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3387 | { | |
3388 | close (s); | |
3389 | return Qnil; | |
3390 | } | |
3391 | ||
3392 | if (ifconf.ifc_len == buf_size) | |
3393 | goto again; | |
3394 | ||
3395 | close (s); | |
3396 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3397 | ||
3398 | res = Qnil; | |
3399 | while (--ifaces >= 0) | |
3400 | { | |
3401 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3402 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3403 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3404 | continue; | |
3405 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3406 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3407 | res = Fcons (Fcons (build_string (namebuf), | |
3408 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3409 | sizeof (struct sockaddr))), | |
3410 | res); | |
3411 | } | |
3412 | ||
3413 | return res; | |
3414 | } | |
b8c7fd71 | 3415 | #endif /* SIOCGIFCONF */ |
161933c7 KS |
3416 | |
3417 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3418 | ||
3419 | struct ifflag_def { | |
3420 | int flag_bit; | |
3421 | char *flag_sym; | |
3422 | }; | |
3423 | ||
3424 | static struct ifflag_def ifflag_table[] = { | |
3425 | #ifdef IFF_UP | |
3426 | { IFF_UP, "up" }, | |
3427 | #endif | |
3428 | #ifdef IFF_BROADCAST | |
3429 | { IFF_BROADCAST, "broadcast" }, | |
3430 | #endif | |
3431 | #ifdef IFF_DEBUG | |
3432 | { IFF_DEBUG, "debug" }, | |
3433 | #endif | |
3434 | #ifdef IFF_LOOPBACK | |
3435 | { IFF_LOOPBACK, "loopback" }, | |
3436 | #endif | |
3437 | #ifdef IFF_POINTOPOINT | |
3438 | { IFF_POINTOPOINT, "pointopoint" }, | |
3439 | #endif | |
3440 | #ifdef IFF_RUNNING | |
3441 | { IFF_RUNNING, "running" }, | |
3442 | #endif | |
3443 | #ifdef IFF_NOARP | |
3444 | { IFF_NOARP, "noarp" }, | |
3445 | #endif | |
3446 | #ifdef IFF_PROMISC | |
3447 | { IFF_PROMISC, "promisc" }, | |
3448 | #endif | |
3449 | #ifdef IFF_NOTRAILERS | |
3450 | { IFF_NOTRAILERS, "notrailers" }, | |
3451 | #endif | |
3452 | #ifdef IFF_ALLMULTI | |
3453 | { IFF_ALLMULTI, "allmulti" }, | |
3454 | #endif | |
3455 | #ifdef IFF_MASTER | |
3456 | { IFF_MASTER, "master" }, | |
3457 | #endif | |
3458 | #ifdef IFF_SLAVE | |
3459 | { IFF_SLAVE, "slave" }, | |
3460 | #endif | |
3461 | #ifdef IFF_MULTICAST | |
3462 | { IFF_MULTICAST, "multicast" }, | |
3463 | #endif | |
3464 | #ifdef IFF_PORTSEL | |
3465 | { IFF_PORTSEL, "portsel" }, | |
3466 | #endif | |
3467 | #ifdef IFF_AUTOMEDIA | |
3468 | { IFF_AUTOMEDIA, "automedia" }, | |
3469 | #endif | |
3470 | #ifdef IFF_DYNAMIC | |
3471 | { IFF_DYNAMIC, "dynamic" }, | |
3472 | #endif | |
3473 | { 0, 0 } | |
3474 | }; | |
3475 | ||
2ccf3102 | 3476 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, |
161933c7 KS |
3477 | doc: /* Return information about network interface named IFNAME. |
3478 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3479 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3480 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3481 | FLAGS is the current flags of the interface. */) | |
3482 | (ifname) | |
3483 | Lisp_Object ifname; | |
3484 | { | |
3485 | struct ifreq rq; | |
3486 | Lisp_Object res = Qnil; | |
3487 | Lisp_Object elt; | |
3488 | int s; | |
3489 | int any = 0; | |
3490 | ||
3491 | CHECK_STRING (ifname); | |
3492 | ||
3493 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
3494 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
3495 | ||
3496 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3497 | if (s < 0) | |
3498 | return Qnil; | |
3499 | ||
3500 | elt = Qnil; | |
559c53b3 | 3501 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) |
161933c7 KS |
3502 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3503 | { | |
3504 | int flags = rq.ifr_flags; | |
3505 | struct ifflag_def *fp; | |
3506 | int fnum; | |
3507 | ||
3508 | any++; | |
3509 | for (fp = ifflag_table; flags != 0 && fp; fp++) | |
3510 | { | |
3511 | if (flags & fp->flag_bit) | |
3512 | { | |
3513 | elt = Fcons (intern (fp->flag_sym), elt); | |
3514 | flags -= fp->flag_bit; | |
3515 | } | |
3516 | } | |
3517 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3518 | { | |
3519 | if (flags & (1 << fnum)) | |
3520 | { | |
3521 | elt = Fcons (make_number (fnum), elt); | |
3522 | } | |
3523 | } | |
3524 | } | |
3525 | #endif | |
3526 | res = Fcons (elt, res); | |
3527 | ||
3528 | elt = Qnil; | |
559c53b3 | 3529 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) |
161933c7 KS |
3530 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3531 | { | |
b8c7fd71 | 3532 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); |
161933c7 KS |
3533 | register struct Lisp_Vector *p = XVECTOR (hwaddr); |
3534 | int n; | |
3535 | ||
3536 | any++; | |
3537 | for (n = 0; n < 6; n++) | |
3538 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
e1283999 | 3539 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); |
161933c7 KS |
3540 | } |
3541 | #endif | |
3542 | res = Fcons (elt, res); | |
3543 | ||
3544 | elt = Qnil; | |
b8c7fd71 | 3545 | #if defined(SIOCGIFNETMASK) && defined(ifr_netmask) |
161933c7 KS |
3546 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3547 | { | |
3548 | any++; | |
3549 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); | |
3550 | } | |
3551 | #endif | |
3552 | res = Fcons (elt, res); | |
3553 | ||
3554 | elt = Qnil; | |
559c53b3 | 3555 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
161933c7 KS |
3556 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3557 | { | |
3558 | any++; | |
3559 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3560 | } | |
3561 | #endif | |
3562 | res = Fcons (elt, res); | |
3563 | ||
3564 | elt = Qnil; | |
559c53b3 | 3565 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) |
161933c7 KS |
3566 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3567 | { | |
3568 | any++; | |
3569 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3570 | } | |
3571 | #endif | |
3572 | res = Fcons (elt, res); | |
3573 | ||
3574 | close (s); | |
3575 | ||
3576 | return any ? res : Qnil; | |
3577 | } | |
3578 | #endif | |
3579 | #endif /* HAVE_SOCKETS */ | |
3580 | ||
6b53bb85 | 3581 | void |
d0d6b7c5 JB |
3582 | deactivate_process (proc) |
3583 | Lisp_Object proc; | |
3584 | { | |
3585 | register int inchannel, outchannel; | |
3586 | register struct Lisp_Process *p = XPROCESS (proc); | |
3587 | ||
a9f2c884 RS |
3588 | inchannel = XINT (p->infd); |
3589 | outchannel = XINT (p->outfd); | |
d0d6b7c5 | 3590 | |
a9f2c884 | 3591 | if (inchannel >= 0) |
d0d6b7c5 JB |
3592 | { |
3593 | /* Beware SIGCHLD hereabouts. */ | |
3594 | flush_pending_output (inchannel); | |
3595 | #ifdef VMS | |
3596 | { | |
3597 | VMS_PROC_STUFF *get_vms_process_pointer (), *vs; | |
3598 | sys$dassgn (outchannel); | |
c6c6865d | 3599 | vs = get_vms_process_pointer (p->pid); |
d0d6b7c5 JB |
3600 | if (vs) |
3601 | give_back_vms_process_stuff (vs); | |
3602 | } | |
3603 | #else | |
68c45bf0 | 3604 | emacs_close (inchannel); |
a9f2c884 | 3605 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3606 | emacs_close (outchannel); |
d0d6b7c5 JB |
3607 | #endif |
3608 | ||
1d056e64 KH |
3609 | XSETINT (p->infd, -1); |
3610 | XSETINT (p->outfd, -1); | |
e690ca94 KS |
3611 | #ifdef DATAGRAM_SOCKETS |
3612 | if (DATAGRAM_CHAN_P (inchannel)) | |
3613 | { | |
3614 | xfree (datagram_address[inchannel].sa); | |
3615 | datagram_address[inchannel].sa = 0; | |
3616 | datagram_address[inchannel].len = 0; | |
3617 | } | |
3618 | #endif | |
d0d6b7c5 JB |
3619 | chan_process[inchannel] = Qnil; |
3620 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3621 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
dd2a17ab KS |
3622 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3623 | { | |
3624 | FD_CLR (inchannel, &connect_wait_mask); | |
3625 | if (--num_pending_connects < 0) | |
3626 | abort (); | |
3627 | } | |
7d0e672e RS |
3628 | if (inchannel == max_process_desc) |
3629 | { | |
3630 | int i; | |
3631 | /* We just closed the highest-numbered process input descriptor, | |
3632 | so recompute the highest-numbered one now. */ | |
3633 | max_process_desc = 0; | |
3634 | for (i = 0; i < MAXDESC; i++) | |
3635 | if (!NILP (chan_process[i])) | |
3636 | max_process_desc = i; | |
3637 | } | |
d0d6b7c5 JB |
3638 | } |
3639 | } | |
3640 | ||
3641 | /* Close all descriptors currently in use for communication | |
3642 | with subprocess. This is used in a newly-forked subprocess | |
3643 | to get rid of irrelevant descriptors. */ | |
3644 | ||
6b53bb85 | 3645 | void |
d0d6b7c5 JB |
3646 | close_process_descs () |
3647 | { | |
e98d950b | 3648 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
3649 | int i; |
3650 | for (i = 0; i < MAXDESC; i++) | |
3651 | { | |
3652 | Lisp_Object process; | |
3653 | process = chan_process[i]; | |
3654 | if (!NILP (process)) | |
3655 | { | |
a9f2c884 RS |
3656 | int in = XINT (XPROCESS (process)->infd); |
3657 | int out = XINT (XPROCESS (process)->outfd); | |
3658 | if (in >= 0) | |
68c45bf0 | 3659 | emacs_close (in); |
a9f2c884 | 3660 | if (out >= 0 && in != out) |
68c45bf0 | 3661 | emacs_close (out); |
d0d6b7c5 JB |
3662 | } |
3663 | } | |
e98d950b | 3664 | #endif |
d0d6b7c5 JB |
3665 | } |
3666 | \f | |
3667 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
fdb82f93 PJ |
3668 | 0, 3, 0, |
3669 | doc: /* Allow any pending output from subprocesses to be read by Emacs. | |
3670 | It is read into the process' buffers or given to their filter functions. | |
3671 | Non-nil arg PROCESS means do not return until some output has been received | |
3672 | from PROCESS. | |
3673 | Non-nil second arg TIMEOUT and third arg TIMEOUT-MSECS are number of | |
3674 | seconds and microseconds to wait; return after that much time whether | |
3675 | or not there is input. | |
3676 | Return non-nil iff we received any output before the timeout expired. */) | |
3677 | (process, timeout, timeout_msecs) | |
4ee3e309 | 3678 | register Lisp_Object process, timeout, timeout_msecs; |
d0d6b7c5 JB |
3679 | { |
3680 | int seconds; | |
3681 | int useconds; | |
3682 | ||
0748d150 | 3683 | if (! NILP (process)) |
b7826503 | 3684 | CHECK_PROCESS (process); |
0748d150 | 3685 | |
d0d6b7c5 JB |
3686 | if (! NILP (timeout_msecs)) |
3687 | { | |
b7826503 | 3688 | CHECK_NUMBER (timeout_msecs); |
d0d6b7c5 | 3689 | useconds = XINT (timeout_msecs); |
bcd69aea | 3690 | if (!INTEGERP (timeout)) |
1d056e64 | 3691 | XSETINT (timeout, 0); |
d0d6b7c5 JB |
3692 | |
3693 | { | |
3694 | int carry = useconds / 1000000; | |
3695 | ||
3696 | XSETINT (timeout, XINT (timeout) + carry); | |
3697 | useconds -= carry * 1000000; | |
3698 | ||
3699 | /* I think this clause is necessary because C doesn't | |
3700 | guarantee a particular rounding direction for negative | |
3701 | integers. */ | |
3702 | if (useconds < 0) | |
3703 | { | |
3704 | XSETINT (timeout, XINT (timeout) - 1); | |
3705 | useconds += 1000000; | |
3706 | } | |
3707 | } | |
3708 | } | |
de946e5a RS |
3709 | else |
3710 | useconds = 0; | |
d0d6b7c5 JB |
3711 | |
3712 | if (! NILP (timeout)) | |
3713 | { | |
b7826503 | 3714 | CHECK_NUMBER (timeout); |
d0d6b7c5 | 3715 | seconds = XINT (timeout); |
ada9a4fd | 3716 | if (seconds < 0 || (seconds == 0 && useconds == 0)) |
d0d6b7c5 JB |
3717 | seconds = -1; |
3718 | } | |
3719 | else | |
26d7389d | 3720 | seconds = NILP (process) ? -1 : 0; |
d0d6b7c5 | 3721 | |
4ee3e309 EN |
3722 | if (NILP (process)) |
3723 | XSETFASTINT (process, 0); | |
f76475ad | 3724 | |
d0d6b7c5 | 3725 | return |
4ee3e309 | 3726 | (wait_reading_process_input (seconds, useconds, process, 0) |
d0d6b7c5 JB |
3727 | ? Qt : Qnil); |
3728 | } | |
3729 | ||
e690ca94 KS |
3730 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3731 | ||
3732 | static int connect_counter = 0; | |
3733 | ||
3734 | static void | |
3735 | server_accept_connection (server, channel) | |
3736 | Lisp_Object server; | |
3737 | int channel; | |
3738 | { | |
3739 | Lisp_Object proc, caller, name, buffer; | |
3740 | Lisp_Object contact, host, service; | |
3741 | struct Lisp_Process *ps= XPROCESS (server); | |
3742 | struct Lisp_Process *p; | |
3743 | int s; | |
3744 | union u_sockaddr { | |
3745 | struct sockaddr sa; | |
3746 | struct sockaddr_in in; | |
3747 | #ifdef HAVE_LOCAL_SOCKETS | |
3748 | struct sockaddr_un un; | |
3749 | #endif | |
3750 | } saddr; | |
3751 | int len = sizeof saddr; | |
3752 | ||
3753 | s = accept (channel, &saddr.sa, &len); | |
3754 | ||
3755 | if (s < 0) | |
3756 | { | |
3757 | int code = errno; | |
3758 | ||
3759 | if (code == EAGAIN) | |
3760 | return; | |
3761 | #ifdef EWOULDBLOCK | |
3762 | if (code == EWOULDBLOCK) | |
3763 | return; | |
3764 | #endif | |
3765 | ||
3766 | if (!NILP (ps->log)) | |
3767 | call3 (ps->log, server, Qnil, | |
3768 | concat3 (build_string ("accept failed with code"), | |
3769 | Fnumber_to_string (make_number (code)), | |
3770 | build_string ("\n"))); | |
3771 | return; | |
3772 | } | |
3773 | ||
3774 | connect_counter++; | |
3775 | ||
3776 | /* Setup a new process to handle the connection. */ | |
3777 | ||
3778 | /* Generate a unique identification of the caller, and build contact | |
3779 | information for this process. */ | |
3780 | host = Qt; | |
3781 | service = Qnil; | |
3782 | switch (saddr.sa.sa_family) | |
3783 | { | |
3784 | case AF_INET: | |
3785 | { | |
3786 | Lisp_Object args[5]; | |
3787 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
3788 | args[0] = build_string ("%d.%d.%d.%d"); | |
3789 | args[1] = make_number (*ip++); | |
3790 | args[2] = make_number (*ip++); | |
3791 | args[3] = make_number (*ip++); | |
3792 | args[4] = make_number (*ip++); | |
3793 | host = Fformat (5, args); | |
3794 | service = make_number (ntohs (saddr.in.sin_port)); | |
3795 | ||
3796 | args[0] = build_string (" <%s:%d>"); | |
3797 | args[1] = host; | |
3798 | args[2] = service; | |
3799 | caller = Fformat (3, args); | |
3800 | } | |
3801 | break; | |
3802 | ||
3803 | #ifdef HAVE_LOCAL_SOCKETS | |
3804 | case AF_LOCAL: | |
3805 | #endif | |
3806 | default: | |
3807 | caller = Fnumber_to_string (make_number (connect_counter)); | |
3808 | caller = concat3 (build_string (" <*"), caller, build_string ("*>")); | |
3809 | break; | |
3810 | } | |
3811 | ||
3812 | /* Create a new buffer name for this process if it doesn't have a | |
3813 | filter. The new buffer name is based on the buffer name or | |
3814 | process name of the server process concatenated with the caller | |
3815 | identification. */ | |
3816 | ||
3817 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
3818 | buffer = Qnil; | |
3819 | else | |
3820 | { | |
3821 | buffer = ps->buffer; | |
3822 | if (!NILP (buffer)) | |
3823 | buffer = Fbuffer_name (buffer); | |
3824 | else | |
3825 | buffer = ps->name; | |
3826 | if (!NILP (buffer)) | |
3827 | { | |
3828 | buffer = concat2 (buffer, caller); | |
3829 | buffer = Fget_buffer_create (buffer); | |
3830 | } | |
3831 | } | |
3832 | ||
3833 | /* Generate a unique name for the new server process. Combine the | |
3834 | server process name with the caller identification. */ | |
3835 | ||
3836 | name = concat2 (ps->name, caller); | |
3837 | proc = make_process (name); | |
3838 | ||
3839 | chan_process[s] = proc; | |
3840 | ||
3841 | #ifdef O_NONBLOCK | |
3842 | fcntl (s, F_SETFL, O_NONBLOCK); | |
3843 | #else | |
3844 | #ifdef O_NDELAY | |
3845 | fcntl (s, F_SETFL, O_NDELAY); | |
3846 | #endif | |
3847 | #endif | |
3848 | ||
3849 | p = XPROCESS (proc); | |
3850 | ||
3851 | /* Build new contact information for this setup. */ | |
3852 | contact = Fcopy_sequence (ps->childp); | |
3853 | contact = Fplist_put (contact, QCserver, Qnil); | |
3854 | contact = Fplist_put (contact, QChost, host); | |
3855 | if (!NILP (service)) | |
3856 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 3857 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
3858 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
3859 | #ifdef HAVE_GETSOCKNAME | |
3860 | len = sizeof saddr; | |
2185db04 | 3861 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 3862 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
3863 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
3864 | #endif | |
3865 | ||
3866 | p->childp = contact; | |
faa7db08 | 3867 | p->plist = Fcopy_sequence (ps->plist); |
ac4a7584 | 3868 | |
e690ca94 KS |
3869 | p->buffer = buffer; |
3870 | p->sentinel = ps->sentinel; | |
3871 | p->filter = ps->filter; | |
3872 | p->command = Qnil; | |
3873 | p->pid = Qnil; | |
3874 | XSETINT (p->infd, s); | |
3875 | XSETINT (p->outfd, s); | |
3876 | p->status = Qrun; | |
3877 | ||
3878 | /* Client processes for accepted connections are not stopped initially. */ | |
3879 | if (!EQ (p->filter, Qt)) | |
3880 | { | |
3881 | FD_SET (s, &input_wait_mask); | |
3882 | FD_SET (s, &non_keyboard_wait_mask); | |
3883 | } | |
3884 | ||
3885 | if (s > max_process_desc) | |
3886 | max_process_desc = s; | |
3887 | ||
177c0ea7 | 3888 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
3889 | This seems to be the proper thing to do, as the coding system |
3890 | of the new process should reflect the settings at the time the | |
3891 | server socket was opened; not the current settings. */ | |
3892 | ||
3893 | p->decode_coding_system = ps->decode_coding_system; | |
3894 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 3895 | setup_process_coding_systems (proc); |
e690ca94 KS |
3896 | |
3897 | p->decoding_buf = make_uninit_string (0); | |
3898 | p->decoding_carryover = make_number (0); | |
3899 | p->encoding_buf = make_uninit_string (0); | |
3900 | p->encoding_carryover = make_number (0); | |
3901 | ||
3902 | p->inherit_coding_system_flag | |
3903 | = (NILP (buffer) ? Qnil : ps->inherit_coding_system_flag); | |
3904 | ||
3905 | if (!NILP (ps->log)) | |
3906 | call3 (ps->log, server, proc, | |
3907 | concat3 (build_string ("accept from "), | |
3908 | (STRINGP (host) ? host : build_string ("-")), | |
3909 | build_string ("\n"))); | |
3910 | ||
bed9664a | 3911 | if (!NILP (p->sentinel)) |
177c0ea7 | 3912 | exec_sentinel (proc, |
e690ca94 KS |
3913 | concat3 (build_string ("open from "), |
3914 | (STRINGP (host) ? host : build_string ("-")), | |
3915 | build_string ("\n"))); | |
3916 | } | |
3917 | ||
d0d6b7c5 JB |
3918 | /* This variable is different from waiting_for_input in keyboard.c. |
3919 | It is used to communicate to a lisp process-filter/sentinel (via the | |
3920 | function Fwaiting_for_user_input_p below) whether emacs was waiting | |
3921 | for user-input when that process-filter was called. | |
3922 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
3923 | lisp code is being evalled. |
3924 | This is also used in record_asynch_buffer_change. | |
3925 | For that purpose, this must be 0 | |
3926 | when not inside wait_reading_process_input. */ | |
d0d6b7c5 JB |
3927 | static int waiting_for_user_input_p; |
3928 | ||
c573ae8e | 3929 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 3930 | static void |
c573ae8e RS |
3931 | wait_reading_process_input_1 () |
3932 | { | |
3933 | } | |
3934 | ||
d0d6b7c5 JB |
3935 | /* Read and dispose of subprocess output while waiting for timeout to |
3936 | elapse and/or keyboard input to be available. | |
3937 | ||
de6fd4b9 | 3938 | TIME_LIMIT is: |
d0d6b7c5 JB |
3939 | timeout in seconds, or |
3940 | zero for no limit, or | |
3941 | -1 means gobble data immediately available but don't wait for any. | |
3942 | ||
de6fd4b9 RS |
3943 | MICROSECS is: |
3944 | an additional duration to wait, measured in microseconds. | |
3945 | If this is nonzero and time_limit is 0, then the timeout | |
3946 | consists of MICROSECS only. | |
6e4f3667 | 3947 | |
de6fd4b9 | 3948 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
3949 | 0 to ignore keyboard input, or |
3950 | 1 to return when input is available, or | |
84aa3ace | 3951 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 3952 | the quit handler, or |
e6194ffc | 3953 | a cons cell, meaning wait until its car is non-nil |
de6fd4b9 | 3954 | (and gobble terminal input into the buffer if any arrives), or |
f76475ad JB |
3955 | a process object, meaning wait until something arrives from that |
3956 | process. The return value is true iff we read some input from | |
3957 | that process. | |
d0d6b7c5 | 3958 | |
de6fd4b9 | 3959 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
d0d6b7c5 JB |
3960 | output that arrives. |
3961 | ||
de6fd4b9 | 3962 | If READ_KBD is a pointer to a struct Lisp_Process, then the |
d0d6b7c5 JB |
3963 | function returns true iff we received input from that process |
3964 | before the timeout elapsed. | |
eb8c3be9 | 3965 | Otherwise, return true iff we received input from any process. */ |
d0d6b7c5 | 3966 | |
dfcf069d | 3967 | int |
d0d6b7c5 | 3968 | wait_reading_process_input (time_limit, microsecs, read_kbd, do_display) |
f76475ad JB |
3969 | int time_limit, microsecs; |
3970 | Lisp_Object read_kbd; | |
3971 | int do_display; | |
d0d6b7c5 | 3972 | { |
41d03b9a | 3973 | register int channel, nfds; |
d0d6b7c5 | 3974 | static SELECT_TYPE Available; |
dd2a17ab KS |
3975 | static SELECT_TYPE Connecting; |
3976 | int check_connect, no_avail; | |
d0d6b7c5 JB |
3977 | int xerrno; |
3978 | Lisp_Object proc; | |
41d03b9a | 3979 | EMACS_TIME timeout, end_time; |
a9f2c884 | 3980 | int wait_channel = -1; |
d0d6b7c5 JB |
3981 | struct Lisp_Process *wait_proc = 0; |
3982 | int got_some_input = 0; | |
f3fbd155 KR |
3983 | /* Either nil or a cons cell, the car of which is of interest and |
3984 | may be changed outside of this routine. */ | |
3985 | Lisp_Object wait_for_cell = Qnil; | |
d0d6b7c5 JB |
3986 | |
3987 | FD_ZERO (&Available); | |
dd2a17ab | 3988 | FD_ZERO (&Connecting); |
d0d6b7c5 | 3989 | |
f76475ad JB |
3990 | /* If read_kbd is a process to watch, set wait_proc and wait_channel |
3991 | accordingly. */ | |
bcd69aea | 3992 | if (PROCESSP (read_kbd)) |
d0d6b7c5 | 3993 | { |
f76475ad | 3994 | wait_proc = XPROCESS (read_kbd); |
a9f2c884 | 3995 | wait_channel = XINT (wait_proc->infd); |
22719df2 | 3996 | XSETFASTINT (read_kbd, 0); |
d0d6b7c5 JB |
3997 | } |
3998 | ||
84aa3ace | 3999 | /* If waiting for non-nil in a cell, record where. */ |
bcd69aea | 4000 | if (CONSP (read_kbd)) |
84aa3ace | 4001 | { |
f3fbd155 | 4002 | wait_for_cell = read_kbd; |
22719df2 | 4003 | XSETFASTINT (read_kbd, 0); |
84aa3ace RS |
4004 | } |
4005 | ||
f76475ad | 4006 | waiting_for_user_input_p = XINT (read_kbd); |
d0d6b7c5 JB |
4007 | |
4008 | /* Since we may need to wait several times, | |
4009 | compute the absolute time to return at. */ | |
4010 | if (time_limit || microsecs) | |
4011 | { | |
4012 | EMACS_GET_TIME (end_time); | |
4013 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4014 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4015 | } | |
19310311 | 4016 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4017 | /* AlainF 5-Jul-1996 |
4018 | HP-UX 10.10 seem to have problems with signals coming in | |
4019 | Causes "poll: interrupted system call" messages when Emacs is run | |
4020 | in an X window | |
75eb23f1 RS |
4021 | Turn off periodic alarms (in case they are in use), |
4022 | and then turn off any other atimers. */ | |
4023 | stop_polling (); | |
30904ab7 | 4024 | turn_on_atimers (0); |
19310311 | 4025 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
d0d6b7c5 | 4026 | |
d0d6b7c5 JB |
4027 | while (1) |
4028 | { | |
c0239a0b RS |
4029 | int timeout_reduced_for_timers = 0; |
4030 | ||
d0d6b7c5 JB |
4031 | /* If calling from keyboard input, do not quit |
4032 | since we want to return C-g as an input character. | |
4033 | Otherwise, do pending quit if requested. */ | |
f76475ad | 4034 | if (XINT (read_kbd) >= 0) |
d0d6b7c5 JB |
4035 | QUIT; |
4036 | ||
889255b4 | 4037 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4038 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4039 | break; |
4040 | ||
d0d6b7c5 JB |
4041 | /* Compute time from now till when time limit is up */ |
4042 | /* Exit if already run out */ | |
4043 | if (time_limit == -1) | |
4044 | { | |
4045 | /* -1 specified for timeout means | |
4046 | gobble output available now | |
4047 | but don't wait at all. */ | |
4048 | ||
4049 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4050 | } | |
4051 | else if (time_limit || microsecs) | |
4052 | { | |
4053 | EMACS_GET_TIME (timeout); | |
4054 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4055 | if (EMACS_TIME_NEG_P (timeout)) | |
4056 | break; | |
4057 | } | |
4058 | else | |
4059 | { | |
4060 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4061 | } | |
4062 | ||
f854a00b RS |
4063 | /* Normally we run timers here. |
4064 | But not if wait_for_cell; in those cases, | |
4065 | the wait is supposed to be short, | |
4066 | and those callers cannot handle running arbitrary Lisp code here. */ | |
f3fbd155 | 4067 | if (NILP (wait_for_cell)) |
fb4c3627 | 4068 | { |
c0239a0b | 4069 | EMACS_TIME timer_delay; |
c573ae8e | 4070 | |
9baacf76 | 4071 | do |
c573ae8e | 4072 | { |
9baacf76 | 4073 | int old_timers_run = timers_run; |
c88164fe | 4074 | struct buffer *old_buffer = current_buffer; |
177c0ea7 | 4075 | |
9baacf76 | 4076 | timer_delay = timer_check (1); |
a2fab450 GM |
4077 | |
4078 | /* If a timer has run, this might have changed buffers | |
4079 | an alike. Make read_key_sequence aware of that. */ | |
4080 | if (timers_run != old_timers_run | |
c88164fe | 4081 | && old_buffer != current_buffer |
a2fab450 GM |
4082 | && waiting_for_user_input_p == -1) |
4083 | record_asynch_buffer_change (); | |
177c0ea7 | 4084 | |
9baacf76 GM |
4085 | if (timers_run != old_timers_run && do_display) |
4086 | /* We must retry, since a timer may have requeued itself | |
4087 | and that could alter the time_delay. */ | |
3007ebfb | 4088 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4089 | else |
4090 | break; | |
c573ae8e | 4091 | } |
9baacf76 | 4092 | while (!detect_input_pending ()); |
c573ae8e | 4093 | |
69645afc RS |
4094 | /* If there is unread keyboard input, also return. */ |
4095 | if (XINT (read_kbd) != 0 | |
4096 | && requeued_events_pending_p ()) | |
4097 | break; | |
4098 | ||
c0239a0b | 4099 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4100 | { |
4101 | EMACS_TIME difference; | |
4102 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4103 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4104 | { |
4105 | timeout = timer_delay; | |
4106 | timeout_reduced_for_timers = 1; | |
4107 | } | |
fb4c3627 | 4108 | } |
4abca5e7 RS |
4109 | /* If time_limit is -1, we are not going to wait at all. */ |
4110 | else if (time_limit != -1) | |
c573ae8e RS |
4111 | { |
4112 | /* This is so a breakpoint can be put here. */ | |
4113 | wait_reading_process_input_1 (); | |
4114 | } | |
fb4c3627 RS |
4115 | } |
4116 | ||
90ab1a81 JB |
4117 | /* Cause C-g and alarm signals to take immediate action, |
4118 | and cause input available signals to zero out timeout. | |
4119 | ||
4120 | It is important that we do this before checking for process | |
4121 | activity. If we get a SIGCHLD after the explicit checks for | |
4122 | process activity, timeout is the only way we will know. */ | |
4123 | if (XINT (read_kbd) < 0) | |
4124 | set_waiting_for_input (&timeout); | |
4125 | ||
6be429b1 JB |
4126 | /* If status of something has changed, and no input is |
4127 | available, notify the user of the change right away. After | |
4128 | this explicit check, we'll let the SIGCHLD handler zap | |
4129 | timeout to get our attention. */ | |
4130 | if (update_tick != process_tick && do_display) | |
4131 | { | |
dd2a17ab KS |
4132 | SELECT_TYPE Atemp, Ctemp; |
4133 | ||
6be429b1 | 4134 | Atemp = input_wait_mask; |
e0f712ba AC |
4135 | #ifdef MAC_OSX |
4136 | /* On Mac OS X, the SELECT system call always says input is | |
4137 | present (for reading) at stdin, even when none is. This | |
aa87aafc | 4138 | causes the call to SELECT below to return 1 and |
e0f712ba AC |
4139 | status_notify not to be called. As a result output of |
4140 | subprocesses are incorrectly discarded. */ | |
4141 | FD_CLR (0, &Atemp); | |
4142 | #endif | |
dd2a17ab | 4143 | Ctemp = connect_wait_mask; |
6be429b1 | 4144 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
0c9960e9 | 4145 | if ((select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4146 | &Atemp, |
dd2a17ab KS |
4147 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
4148 | (SELECT_TYPE *)0, &timeout) | |
ecd1f654 | 4149 | <= 0)) |
90ab1a81 JB |
4150 | { |
4151 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4152 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 JB |
4153 | clear_waiting_for_input (); |
4154 | status_notify (); | |
4155 | } | |
6be429b1 JB |
4156 | } |
4157 | ||
dd2a17ab KS |
4158 | /* Don't wait for output from a non-running process. Just |
4159 | read whatever data has already been received. */ | |
6be429b1 JB |
4160 | if (wait_proc != 0 && !NILP (wait_proc->raw_status_low)) |
4161 | update_status (wait_proc); | |
4162 | if (wait_proc != 0 | |
dd2a17ab KS |
4163 | && ! EQ (wait_proc->status, Qrun) |
4164 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4165 | { |
215b45e9 | 4166 | int nread, total_nread = 0; |
7ce63188 | 4167 | |
9aa2a7f4 | 4168 | clear_waiting_for_input (); |
7ce63188 RS |
4169 | XSETPROCESS (proc, wait_proc); |
4170 | ||
4171 | /* Read data from the process, until we exhaust it. */ | |
e1b37c34 | 4172 | while (XINT (wait_proc->infd) >= 0) |
215b45e9 | 4173 | { |
e1b37c34 GM |
4174 | nread = read_process_output (proc, XINT (wait_proc->infd)); |
4175 | ||
4176 | if (nread == 0) | |
4177 | break; | |
4178 | ||
177c0ea7 | 4179 | if (0 < nread) |
215b45e9 RS |
4180 | total_nread += nread; |
4181 | #ifdef EIO | |
4182 | else if (nread == -1 && EIO == errno) | |
4183 | break; | |
e1b37c34 GM |
4184 | #endif |
4185 | #ifdef EAGAIN | |
4186 | else if (nread == -1 && EAGAIN == errno) | |
4187 | break; | |
4188 | #endif | |
4189 | #ifdef EWOULDBLOCK | |
4190 | else if (nread == -1 && EWOULDBLOCK == errno) | |
4191 | break; | |
215b45e9 RS |
4192 | #endif |
4193 | } | |
7ce63188 | 4194 | if (total_nread > 0 && do_display) |
3007ebfb | 4195 | redisplay_preserve_echo_area (10); |
7ce63188 | 4196 | |
9aa2a7f4 JB |
4197 | break; |
4198 | } | |
6be429b1 | 4199 | |
d0d6b7c5 JB |
4200 | /* Wait till there is something to do */ |
4201 | ||
f3fbd155 | 4202 | if (!NILP (wait_for_cell)) |
dd2a17ab KS |
4203 | { |
4204 | Available = non_process_wait_mask; | |
4205 | check_connect = 0; | |
4206 | } | |
a69281ff | 4207 | else |
dd2a17ab KS |
4208 | { |
4209 | if (! XINT (read_kbd)) | |
4210 | Available = non_keyboard_wait_mask; | |
4211 | else | |
4212 | Available = input_wait_mask; | |
4213 | check_connect = (num_pending_connects > 0); | |
4214 | } | |
d0d6b7c5 | 4215 | |
ff11dfa1 | 4216 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4217 | redisplay now, before we start to wait. There is a race |
4218 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4219 | and indicates that a frame is trashed, the select may block |
4220 | displaying a trashed screen. */ | |
5164ee8e | 4221 | if (frame_garbaged && do_display) |
7286affd RS |
4222 | { |
4223 | clear_waiting_for_input (); | |
3007ebfb | 4224 | redisplay_preserve_echo_area (11); |
7286affd | 4225 | if (XINT (read_kbd) < 0) |
7efe788e | 4226 | set_waiting_for_input (&timeout); |
7286affd | 4227 | } |
ffd56f97 | 4228 | |
dd2a17ab | 4229 | no_avail = 0; |
0a65b032 RS |
4230 | if (XINT (read_kbd) && detect_input_pending ()) |
4231 | { | |
4232 | nfds = 0; | |
dd2a17ab | 4233 | no_avail = 1; |
0a65b032 RS |
4234 | } |
4235 | else | |
dd2a17ab KS |
4236 | { |
4237 | if (check_connect) | |
4238 | Connecting = connect_wait_mask; | |
4239 | nfds = select (max (max_process_desc, max_keyboard_desc) + 1, | |
177c0ea7 | 4240 | &Available, |
dd2a17ab KS |
4241 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
4242 | (SELECT_TYPE *)0, &timeout); | |
4243 | } | |
6720a7fb | 4244 | |
d0d6b7c5 JB |
4245 | xerrno = errno; |
4246 | ||
4247 | /* Make C-g and alarm signals set flags again */ | |
4248 | clear_waiting_for_input (); | |
4249 | ||
4250 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4251 | do_pending_window_change (0); |
d0d6b7c5 | 4252 | |
c0239a0b RS |
4253 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4254 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4255 | break; |
4256 | if (nfds < 0) | |
4257 | { | |
4258 | if (xerrno == EINTR) | |
dd2a17ab | 4259 | no_avail = 1; |
b0310da4 JB |
4260 | #ifdef ultrix |
4261 | /* Ultrix select seems to return ENOMEM when it is | |
4262 | interrupted. Treat it just like EINTR. Bleah. Note | |
4263 | that we want to test for the "ultrix" CPP symbol, not | |
4264 | "__ultrix__"; the latter is only defined under GCC, but | |
4265 | not by DEC's bundled CC. -JimB */ | |
8058415c | 4266 | else if (xerrno == ENOMEM) |
dd2a17ab | 4267 | no_avail = 1; |
8058415c | 4268 | #endif |
d0d6b7c5 JB |
4269 | #ifdef ALLIANT |
4270 | /* This happens for no known reason on ALLIANT. | |
4271 | I am guessing that this is the right response. -- RMS. */ | |
4272 | else if (xerrno == EFAULT) | |
dd2a17ab | 4273 | no_avail = 1; |
d0d6b7c5 JB |
4274 | #endif |
4275 | else if (xerrno == EBADF) | |
4276 | { | |
4277 | #ifdef AIX | |
4278 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4279 | the child's closure of the pts gives the parent a SIGHUP, and | |
4280 | the ptc file descriptor is automatically closed, | |
4281 | yielding EBADF here or at select() call above. | |
4282 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4283 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4284 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4285 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4286 | #else |
4287 | abort (); | |
4288 | #endif | |
4289 | } | |
4290 | else | |
68c45bf0 | 4291 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4292 | } |
dd2a17ab KS |
4293 | |
4294 | if (no_avail) | |
4295 | { | |
4296 | FD_ZERO (&Available); | |
4297 | check_connect = 0; | |
4298 | } | |
4299 | ||
26ec91de | 4300 | #if defined(sun) && !defined(USG5_4) |
dd2a17ab KS |
4301 | if (nfds > 0 && keyboard_bit_set (&Available) |
4302 | && interrupt_input) | |
e0109153 JB |
4303 | /* System sometimes fails to deliver SIGIO. |
4304 | ||
4305 | David J. Mackenzie says that Emacs doesn't compile under | |
4306 | Solaris if this code is enabled, thus the USG5_4 in the CPP | |
4307 | conditional. "I haven't noticed any ill effects so far. | |
4308 | If you find a Solaris expert somewhere, they might know | |
4309 | better." */ | |
d0d6b7c5 JB |
4310 | kill (getpid (), SIGIO); |
4311 | #endif | |
4312 | ||
5d5beb62 RS |
4313 | #if 0 /* When polling is used, interrupt_input is 0, |
4314 | so get_input_pending should read the input. | |
4315 | So this should not be needed. */ | |
4316 | /* If we are using polling for input, | |
4317 | and we see input available, make it get read now. | |
4318 | Otherwise it might not actually get read for a second. | |
4319 | And on hpux, since we turn off polling in wait_reading_process_input, | |
4320 | it might never get read at all if we don't spend much time | |
4321 | outside of wait_reading_process_input. */ | |
4322 | if (XINT (read_kbd) && interrupt_input | |
4323 | && keyboard_bit_set (&Available) | |
4324 | && input_polling_used ()) | |
4325 | kill (getpid (), SIGALRM); | |
4326 | #endif | |
4327 | ||
d0d6b7c5 JB |
4328 | /* Check for keyboard input */ |
4329 | /* If there is any, return immediately | |
4330 | to give it higher priority than subprocesses */ | |
4331 | ||
a2fab450 | 4332 | if (XINT (read_kbd) != 0) |
6ed6233b | 4333 | { |
a2fab450 | 4334 | int old_timers_run = timers_run; |
c88164fe | 4335 | struct buffer *old_buffer = current_buffer; |
a2fab450 | 4336 | int leave = 0; |
177c0ea7 | 4337 | |
5d6c2aa3 | 4338 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4339 | { |
4340 | swallow_events (do_display); | |
4341 | if (detect_input_pending_run_timers (do_display)) | |
4342 | leave = 1; | |
4343 | } | |
6ed6233b | 4344 | |
a2fab450 GM |
4345 | /* If a timer has run, this might have changed buffers |
4346 | an alike. Make read_key_sequence aware of that. */ | |
4347 | if (timers_run != old_timers_run | |
c88164fe GM |
4348 | && waiting_for_user_input_p == -1 |
4349 | && old_buffer != current_buffer) | |
a2fab450 GM |
4350 | record_asynch_buffer_change (); |
4351 | ||
4352 | if (leave) | |
4353 | break; | |
177c0ea7 JB |
4354 | } |
4355 | ||
69645afc RS |
4356 | /* If there is unread keyboard input, also return. */ |
4357 | if (XINT (read_kbd) != 0 | |
4358 | && requeued_events_pending_p ()) | |
4359 | break; | |
4360 | ||
77e1b3d4 RS |
4361 | /* If we are not checking for keyboard input now, |
4362 | do process events (but don't run any timers). | |
4363 | This is so that X events will be processed. | |
0c9960e9 | 4364 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4365 | That would causes delays in pasting selections, for example. |
4366 | ||
4367 | (We used to do this only if wait_for_cell.) */ | |
4368 | if (XINT (read_kbd) == 0 && detect_input_pending ()) | |
f854a00b RS |
4369 | { |
4370 | swallow_events (do_display); | |
0c9960e9 | 4371 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4372 | if (detect_input_pending ()) |
4373 | break; | |
5d5beb62 | 4374 | #endif |
0c9960e9 | 4375 | } |
f854a00b | 4376 | |
84aa3ace | 4377 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4378 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4379 | break; |
4380 | ||
4746118a | 4381 | #ifdef SIGIO |
5d5beb62 | 4382 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4383 | go read it. This can happen with X on BSD after logging out. |
4384 | In that case, there really is no input and no SIGIO, | |
4385 | but select says there is input. */ | |
4386 | ||
dd2281ae | 4387 | if (XINT (read_kbd) && interrupt_input |
2601f59e | 4388 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4389 | kill (getpid (), SIGIO); |
4746118a | 4390 | #endif |
d0d6b7c5 | 4391 | |
d0d6b7c5 JB |
4392 | if (! wait_proc) |
4393 | got_some_input |= nfds > 0; | |
4394 | ||
32676c08 JB |
4395 | /* If checking input just got us a size-change event from X, |
4396 | obey it now if we should. */ | |
f3fbd155 | 4397 | if (XINT (read_kbd) || ! NILP (wait_for_cell)) |
2b653806 | 4398 | do_pending_window_change (0); |
32676c08 | 4399 | |
a9f2c884 | 4400 | /* Check for data from a process. */ |
dd2a17ab KS |
4401 | if (no_avail || nfds == 0) |
4402 | continue; | |
4403 | ||
a9f2c884 RS |
4404 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4405 | but this is safer in the short run. */ | |
a69281ff | 4406 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4407 | { |
a69281ff RS |
4408 | if (FD_ISSET (channel, &Available) |
4409 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4410 | { |
4411 | int nread; | |
4412 | ||
4413 | /* If waiting for this channel, arrange to return as | |
4414 | soon as no more input to be processed. No more | |
4415 | waiting. */ | |
4416 | if (wait_channel == channel) | |
4417 | { | |
a9f2c884 | 4418 | wait_channel = -1; |
d0d6b7c5 JB |
4419 | time_limit = -1; |
4420 | got_some_input = 1; | |
4421 | } | |
4422 | proc = chan_process[channel]; | |
4423 | if (NILP (proc)) | |
4424 | continue; | |
4425 | ||
e690ca94 KS |
4426 | /* If this is a server stream socket, accept connection. */ |
4427 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4428 | { | |
4429 | server_accept_connection (proc, channel); | |
4430 | continue; | |
4431 | } | |
4432 | ||
d0d6b7c5 JB |
4433 | /* Read data from the process, starting with our |
4434 | buffered-ahead character if we have one. */ | |
4435 | ||
4436 | nread = read_process_output (proc, channel); | |
4437 | if (nread > 0) | |
4438 | { | |
4439 | /* Since read_process_output can run a filter, | |
4440 | which can call accept-process-output, | |
4441 | don't try to read from any other processes | |
4442 | before doing the select again. */ | |
4443 | FD_ZERO (&Available); | |
4444 | ||
4445 | if (do_display) | |
3007ebfb | 4446 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4447 | } |
4448 | #ifdef EWOULDBLOCK | |
4449 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4450 | ; | |
0b75e9a4 | 4451 | #endif |
89d7280d RS |
4452 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4453 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4454 | #ifdef O_NONBLOCK |
4455 | else if (nread == -1 && errno == EAGAIN) | |
4456 | ; | |
4457 | #else | |
4458 | #ifdef O_NDELAY | |
4459 | else if (nread == -1 && errno == EAGAIN) | |
4460 | ; | |
4461 | /* Note that we cannot distinguish between no input | |
4462 | available now and a closed pipe. | |
4463 | With luck, a closed pipe will be accompanied by | |
4464 | subprocess termination and SIGCHLD. */ | |
4465 | else if (nread == 0 && !NETCONN_P (proc)) | |
4466 | ; | |
ffd56f97 JB |
4467 | #endif /* O_NDELAY */ |
4468 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4469 | #ifdef HAVE_PTYS |
4470 | /* On some OSs with ptys, when the process on one end of | |
4471 | a pty exits, the other end gets an error reading with | |
4472 | errno = EIO instead of getting an EOF (0 bytes read). | |
4473 | Therefore, if we get an error reading and errno = | |
4474 | EIO, just continue, because the child process has | |
4475 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4476 | get a SIGCHLD). |
4477 | ||
4478 | However, it has been known to happen that the SIGCHLD | |
4479 | got lost. So raise the signl again just in case. | |
4480 | It can't hurt. */ | |
d0d6b7c5 | 4481 | else if (nread == -1 && errno == EIO) |
5651af6d | 4482 | kill (getpid (), SIGCHLD); |
ffd56f97 JB |
4483 | #endif /* HAVE_PTYS */ |
4484 | /* If we can detect process termination, don't consider the process | |
4485 | gone just because its pipe is closed. */ | |
d0d6b7c5 JB |
4486 | #ifdef SIGCHLD |
4487 | else if (nread == 0 && !NETCONN_P (proc)) | |
4488 | ; | |
4489 | #endif | |
4490 | else | |
4491 | { | |
4492 | /* Preserve status of processes already terminated. */ | |
4493 | XSETINT (XPROCESS (proc)->tick, ++process_tick); | |
4494 | deactivate_process (proc); | |
4495 | if (!NILP (XPROCESS (proc)->raw_status_low)) | |
4496 | update_status (XPROCESS (proc)); | |
4497 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4498 | XPROCESS (proc)->status | |
4499 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4500 | } | |
4501 | } | |
177c0ea7 | 4502 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4503 | if (check_connect && FD_ISSET (channel, &Connecting)) |
4504 | { | |
4505 | struct Lisp_Process *p; | |
dd2a17ab KS |
4506 | |
4507 | FD_CLR (channel, &connect_wait_mask); | |
4508 | if (--num_pending_connects < 0) | |
4509 | abort (); | |
4510 | ||
4511 | proc = chan_process[channel]; | |
4512 | if (NILP (proc)) | |
4513 | continue; | |
4514 | ||
4515 | p = XPROCESS (proc); | |
4516 | ||
4517 | #ifdef GNU_LINUX | |
4518 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
4519 | So only use it on systems where it is known to work. */ | |
4520 | { | |
e690ca94 | 4521 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
4522 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
4523 | xerrno = errno; | |
4524 | } | |
4525 | #else | |
44c887be PJ |
4526 | { |
4527 | struct sockaddr pname; | |
4528 | int pnamelen = sizeof(pname); | |
4529 | ||
4530 | /* If connection failed, getpeername will fail. */ | |
4531 | xerrno = 0; | |
4532 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
4533 | { | |
4534 | /* Obtain connect failure code through error slippage. */ | |
4535 | char dummy; | |
dd2a17ab | 4536 | xerrno = errno; |
44c887be PJ |
4537 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
4538 | xerrno = errno; | |
4539 | } | |
4540 | } | |
dd2a17ab KS |
4541 | #endif |
4542 | if (xerrno) | |
4543 | { | |
4544 | XSETINT (p->tick, ++process_tick); | |
4545 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); | |
4546 | deactivate_process (proc); | |
4547 | } | |
4548 | else | |
4549 | { | |
4550 | p->status = Qrun; | |
4551 | /* Execute the sentinel here. If we had relied on | |
4552 | status_notify to do it later, it will read input | |
4553 | from the process before calling the sentinel. */ | |
4554 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4555 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab KS |
4556 | { |
4557 | FD_SET (XINT (p->infd), &input_wait_mask); | |
4558 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
4559 | } | |
4560 | } | |
4561 | } | |
4562 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4563 | } /* end for each file descriptor */ |
4564 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4565 | |
d430ee71 RS |
4566 | waiting_for_user_input_p = 0; |
4567 | ||
ffd56f97 JB |
4568 | /* If calling from keyboard input, do not quit |
4569 | since we want to return C-g as an input character. | |
4570 | Otherwise, do pending quit if requested. */ | |
f76475ad | 4571 | if (XINT (read_kbd) >= 0) |
ffd56f97 JB |
4572 | { |
4573 | /* Prevent input_pending from remaining set if we quit. */ | |
4574 | clear_input_pending (); | |
4575 | QUIT; | |
4576 | } | |
19310311 | 4577 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4578 | /* AlainF 5-Jul-1996 |
4579 | HP-UX 10.10 seems to have problems with signals coming in | |
4580 | Causes "poll: interrupted system call" messages when Emacs is run | |
4581 | in an X window | |
4582 | Turn periodic alarms back on */ | |
5d5beb62 | 4583 | start_polling (); |
19310311 | 4584 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
efa2a55c | 4585 | |
d0d6b7c5 JB |
4586 | return got_some_input; |
4587 | } | |
4588 | \f | |
3b9a3dfa RS |
4589 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4590 | ||
4591 | static Lisp_Object | |
4592 | read_process_output_call (fun_and_args) | |
4593 | Lisp_Object fun_and_args; | |
4594 | { | |
70949dac | 4595 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4596 | } |
4597 | ||
4598 | static Lisp_Object | |
4599 | read_process_output_error_handler (error) | |
4600 | Lisp_Object error; | |
4601 | { | |
4602 | cmd_error_internal (error, "error in process filter: "); | |
4603 | Vinhibit_quit = Qt; | |
4604 | update_echo_area (); | |
833ba342 | 4605 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4606 | return Qt; |
3b9a3dfa RS |
4607 | } |
4608 | ||
d0d6b7c5 JB |
4609 | /* Read pending output from the process channel, |
4610 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 4611 | Yield number of decoded characters read. |
d0d6b7c5 JB |
4612 | |
4613 | This function reads at most 1024 characters. | |
4614 | If you want to read all available subprocess output, | |
0fa1789e KH |
4615 | you must call it repeatedly until it returns zero. |
4616 | ||
4617 | The characters read are decoded according to PROC's coding-system | |
4618 | for decoding. */ | |
d0d6b7c5 | 4619 | |
dfcf069d | 4620 | int |
d0d6b7c5 JB |
4621 | read_process_output (proc, channel) |
4622 | Lisp_Object proc; | |
4623 | register int channel; | |
4624 | { | |
e1283999 | 4625 | register int nbytes; |
d0d6b7c5 | 4626 | char *chars; |
d0d6b7c5 JB |
4627 | register Lisp_Object outstream; |
4628 | register struct buffer *old = current_buffer; | |
4629 | register struct Lisp_Process *p = XPROCESS (proc); | |
4630 | register int opoint; | |
c7580538 | 4631 | struct coding_system *coding = proc_decode_coding_system[channel]; |
e7fbaa65 | 4632 | int carryover = XINT (p->decoding_carryover); |
e690ca94 | 4633 | int readmax = 1024; |
d0d6b7c5 JB |
4634 | |
4635 | #ifdef VMS | |
4636 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); | |
4637 | ||
4638 | vs = get_vms_process_pointer (p->pid); | |
4639 | if (vs) | |
4640 | { | |
4641 | if (!vs->iosb[0]) | |
a319f7c1 | 4642 | return (0); /* Really weird if it does this */ |
d0d6b7c5 JB |
4643 | if (!(vs->iosb[0] & 1)) |
4644 | return -1; /* I/O error */ | |
4645 | } | |
4646 | else | |
4647 | error ("Could not get VMS process pointer"); | |
4648 | chars = vs->inputBuffer; | |
1d2fc612 RS |
4649 | nbytes = clean_vms_buffer (chars, vs->iosb[1]); |
4650 | if (nbytes <= 0) | |
d0d6b7c5 JB |
4651 | { |
4652 | start_vms_process_read (vs); /* Crank up the next read on the process */ | |
4653 | return 1; /* Nothing worth printing, say we got 1 */ | |
4654 | } | |
e7fbaa65 | 4655 | if (carryover > 0) |
0fa1789e | 4656 | { |
e7fbaa65 KH |
4657 | /* The data carried over in the previous decoding (which are at |
4658 | the tail of decoding buffer) should be prepended to the new | |
4659 | data read to decode all together. */ | |
ed7a4b2d | 4660 | chars = (char *) alloca (nbytes + carryover); |
d5db4077 | 4661 | bcopy (SDATA (p->decoding_buf), buf, carryover); |
ed7a4b2d | 4662 | bcopy (vs->inputBuffer, chars + carryover, nbytes); |
0fa1789e | 4663 | } |
d0d6b7c5 | 4664 | #else /* not VMS */ |
e690ca94 KS |
4665 | |
4666 | #ifdef DATAGRAM_SOCKETS | |
4667 | /* A datagram is one packet; allow at least 1500+ bytes of data | |
4668 | corresponding to the typical Ethernet frame size. */ | |
4669 | if (DATAGRAM_CHAN_P (channel)) | |
4670 | { | |
4671 | /* carryover = 0; */ /* Does carryover make sense for datagrams? */ | |
4672 | readmax += 1024; | |
4673 | } | |
4674 | #endif | |
4675 | ||
4676 | chars = (char *) alloca (carryover + readmax); | |
e7fbaa65 KH |
4677 | if (carryover) |
4678 | /* See the comment above. */ | |
d5db4077 | 4679 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 4680 | |
e690ca94 KS |
4681 | #ifdef DATAGRAM_SOCKETS |
4682 | /* We have a working select, so proc_buffered_char is always -1. */ | |
4683 | if (DATAGRAM_CHAN_P (channel)) | |
4684 | { | |
4685 | int len = datagram_address[channel].len; | |
47714441 | 4686 | nbytes = recvfrom (channel, chars + carryover, readmax - carryover, |
e690ca94 KS |
4687 | 0, datagram_address[channel].sa, &len); |
4688 | } | |
4689 | else | |
4690 | #endif | |
d0d6b7c5 | 4691 | if (proc_buffered_char[channel] < 0) |
47714441 | 4692 | nbytes = emacs_read (channel, chars + carryover, readmax - carryover); |
d0d6b7c5 JB |
4693 | else |
4694 | { | |
ed7a4b2d | 4695 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 4696 | proc_buffered_char[channel] = -1; |
47714441 | 4697 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1 - carryover); |
1d2fc612 RS |
4698 | if (nbytes < 0) |
4699 | nbytes = 1; | |
d0d6b7c5 | 4700 | else |
1d2fc612 | 4701 | nbytes = nbytes + 1; |
d0d6b7c5 JB |
4702 | } |
4703 | #endif /* not VMS */ | |
4704 | ||
ca65341e KH |
4705 | XSETINT (p->decoding_carryover, 0); |
4706 | ||
ed7a4b2d | 4707 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 4708 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
4709 | if (nbytes <= 0) |
4710 | { | |
4711 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
4712 | return nbytes; | |
4713 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
4714 | } | |
d0d6b7c5 | 4715 | |
1d2fc612 | 4716 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 4717 | nbytes += carryover; |
0fa1789e | 4718 | |
1d2fc612 | 4719 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
4720 | outstream = p->filter; |
4721 | if (!NILP (outstream)) | |
4722 | { | |
177c0ea7 | 4723 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
4724 | hitting ^G when a filter happens to be running won't screw |
4725 | it up. */ | |
aed13378 | 4726 | int count = SPECPDL_INDEX (); |
30c78175 | 4727 | Lisp_Object odeactivate; |
dfc21838 | 4728 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 4729 | Lisp_Object text; |
4da2f5be | 4730 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 4731 | int waiting = waiting_for_user_input_p; |
30c78175 | 4732 | |
dfc21838 RS |
4733 | /* No need to gcpro these, because all we do with them later |
4734 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 4735 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
4736 | XSETBUFFER (obuffer, current_buffer); |
4737 | okeymap = current_buffer->keymap; | |
30c78175 | 4738 | |
d0d6b7c5 | 4739 | specbind (Qinhibit_quit, Qt); |
6545aada | 4740 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 4741 | |
4da2f5be RS |
4742 | /* In case we get recursively called, |
4743 | and we already saved the match data nonrecursively, | |
4744 | save the same match data in safely recursive fashion. */ | |
4745 | if (outer_running_asynch_code) | |
4746 | { | |
4747 | Lisp_Object tem; | |
4748 | /* Don't clobber the CURRENT match data, either! */ | |
dd130227 | 4749 | tem = Fmatch_data (Qnil, Qnil); |
4da2f5be | 4750 | restore_match_data (); |
8f1ecd05 RS |
4751 | record_unwind_protect (Fset_match_data, Fmatch_data (Qnil, Qnil)); |
4752 | Fset_match_data (tem); | |
4da2f5be RS |
4753 | } |
4754 | ||
4755 | /* For speed, if a search happens within this code, | |
4756 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 4757 | running_asynch_code = 1; |
4da2f5be | 4758 | |
ed7a4b2d KH |
4759 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
4760 | coding, 0); | |
082a1df2 | 4761 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
4762 | /* A new coding system might be found. */ |
4763 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
4764 | { | |
4765 | p->decode_coding_system = coding->symbol; | |
4766 | ||
4767 | /* Don't call setup_coding_system for | |
4768 | proc_decode_coding_system[channel] here. It is done in | |
4769 | detect_coding called via decode_coding above. */ | |
4770 | ||
4771 | /* If a coding system for encoding is not yet decided, we set | |
4772 | it as the same as coding-system for decoding. | |
4773 | ||
4774 | But, before doing that we must check if | |
4775 | proc_encode_coding_system[p->outfd] surely points to a | |
4776 | valid memory because p->outfd will be changed once EOF is | |
4777 | sent to the process. */ | |
4778 | if (NILP (p->encode_coding_system) | |
4779 | && proc_encode_coding_system[XINT (p->outfd)]) | |
4780 | { | |
4781 | p->encode_coding_system = coding->symbol; | |
4782 | setup_coding_system (coding->symbol, | |
4783 | proc_encode_coding_system[XINT (p->outfd)]); | |
4784 | } | |
4785 | } | |
51c6067d | 4786 | |
ed7a4b2d | 4787 | carryover = nbytes - coding->consumed; |
d5db4077 | 4788 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
4789 | carryover); |
4790 | XSETINT (p->decoding_carryover, carryover); | |
03f04413 KH |
4791 | /* Adjust the multibyteness of TEXT to that of the filter. */ |
4792 | if (NILP (p->filter_multibyte) != ! STRING_MULTIBYTE (text)) | |
4793 | text = (STRING_MULTIBYTE (text) | |
4794 | ? Fstring_as_unibyte (text) | |
4795 | : Fstring_to_multibyte (text)); | |
e430e5ba | 4796 | if (SBYTES (text) > 0) |
dd97db06 KH |
4797 | internal_condition_case_1 (read_process_output_call, |
4798 | Fcons (outstream, | |
4799 | Fcons (proc, Fcons (text, Qnil))), | |
4800 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
4801 | read_process_output_error_handler); | |
4da2f5be RS |
4802 | |
4803 | /* If we saved the match data nonrecursively, restore it now. */ | |
7074fde6 | 4804 | restore_match_data (); |
4da2f5be | 4805 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 4806 | |
592ce97f | 4807 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
4808 | Vdeactivate_mark = odeactivate; |
4809 | ||
bbce7d72 RS |
4810 | /* Restore waiting_for_user_input_p as it was |
4811 | when we were called, in case the filter clobbered it. */ | |
4812 | waiting_for_user_input_p = waiting; | |
4813 | ||
7973cfa8 RS |
4814 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
4815 | because we might have changed minor modes or other things | |
4816 | that affect key bindings. */ | |
dfc21838 RS |
4817 | if (! EQ (Fcurrent_buffer (), obuffer) |
4818 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 4819 | #endif |
927e08be RS |
4820 | /* But do it only if the caller is actually going to read events. |
4821 | Otherwise there's no need to make him wake up, and it could | |
4822 | cause trouble (for example it would make Fsit_for return). */ | |
4823 | if (waiting_for_user_input_p == -1) | |
4824 | record_asynch_buffer_change (); | |
d72534ba | 4825 | |
d0d6b7c5 JB |
4826 | #ifdef VMS |
4827 | start_vms_process_read (vs); | |
4828 | #endif | |
2ea6d561 | 4829 | unbind_to (count, Qnil); |
e430e5ba | 4830 | return nbytes; |
d0d6b7c5 JB |
4831 | } |
4832 | ||
4833 | /* If no filter, write into buffer if it isn't dead. */ | |
4834 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
4835 | { | |
b0310da4 | 4836 | Lisp_Object old_read_only; |
12ca5cdf | 4837 | int old_begv, old_zv; |
d8a2934e | 4838 | int old_begv_byte, old_zv_byte; |
30c78175 | 4839 | Lisp_Object odeactivate; |
d8a2934e RS |
4840 | int before, before_byte; |
4841 | int opoint_byte; | |
ed7a4b2d | 4842 | Lisp_Object text; |
926b7e5e | 4843 | struct buffer *b; |
30c78175 RS |
4844 | |
4845 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 JB |
4846 | |
4847 | Fset_buffer (p->buffer); | |
6ec8bbd2 | 4848 | opoint = PT; |
d8a2934e | 4849 | opoint_byte = PT_BYTE; |
b0310da4 | 4850 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
4851 | old_begv = BEGV; |
4852 | old_zv = ZV; | |
d8a2934e RS |
4853 | old_begv_byte = BEGV_BYTE; |
4854 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
4855 | |
4856 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
4857 | |
4858 | /* Insert new output into buffer | |
4859 | at the current end-of-output marker, | |
4860 | thus preserving logical ordering of input and output. */ | |
4861 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
4862 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
4863 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
4864 | ZV_BYTE)); | |
d0d6b7c5 | 4865 | else |
d8a2934e | 4866 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 4867 | before = PT; |
d8a2934e | 4868 | before_byte = PT_BYTE; |
b0310da4 JB |
4869 | |
4870 | /* If the output marker is outside of the visible region, save | |
4871 | the restriction and widen. */ | |
6ec8bbd2 | 4872 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
4873 | Fwiden (); |
4874 | ||
ed7a4b2d KH |
4875 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
4876 | coding, 0); | |
082a1df2 | 4877 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
4878 | /* A new coding system might be found. See the comment in the |
4879 | similar code in the previous `if' block. */ | |
4880 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
4881 | { | |
4882 | p->decode_coding_system = coding->symbol; | |
4883 | if (NILP (p->encode_coding_system) | |
4884 | && proc_encode_coding_system[XINT (p->outfd)]) | |
4885 | { | |
4886 | p->encode_coding_system = coding->symbol; | |
4887 | setup_coding_system (coding->symbol, | |
4888 | proc_encode_coding_system[XINT (p->outfd)]); | |
4889 | } | |
4890 | } | |
4891 | carryover = nbytes - coding->consumed; | |
d5db4077 | 4892 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
4893 | carryover); |
4894 | XSETINT (p->decoding_carryover, carryover); | |
d69864bf KH |
4895 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4896 | if (NILP (current_buffer->enable_multibyte_characters) | |
4897 | != ! STRING_MULTIBYTE (text)) | |
4898 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 4899 | ? Fstring_as_unibyte (text) |
03f04413 | 4900 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
4901 | /* Insert before markers in case we are inserting where |
4902 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
4903 | insert_from_string_before_markers (text, 0, 0, |
4904 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 4905 | |
926b7e5e GM |
4906 | /* Make sure the process marker's position is valid when the |
4907 | process buffer is changed in the signal_after_change above. | |
4908 | W3 is known to do that. */ | |
4909 | if (BUFFERP (p->buffer) | |
4910 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
4911 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
4912 | else | |
4913 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 4914 | |
d0d6b7c5 JB |
4915 | update_mode_lines++; |
4916 | ||
12ca5cdf RS |
4917 | /* Make sure opoint and the old restrictions |
4918 | float ahead of any new text just as point would. */ | |
4919 | if (opoint >= before) | |
d8a2934e RS |
4920 | { |
4921 | opoint += PT - before; | |
4922 | opoint_byte += PT_BYTE - before_byte; | |
4923 | } | |
12ca5cdf | 4924 | if (old_begv > before) |
d8a2934e RS |
4925 | { |
4926 | old_begv += PT - before; | |
4927 | old_begv_byte += PT_BYTE - before_byte; | |
4928 | } | |
12ca5cdf | 4929 | if (old_zv >= before) |
d8a2934e RS |
4930 | { |
4931 | old_zv += PT - before; | |
4932 | old_zv_byte += PT_BYTE - before_byte; | |
4933 | } | |
12ca5cdf | 4934 | |
b0310da4 | 4935 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
4936 | if (old_begv != BEGV || old_zv != ZV) |
4937 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 4938 | |
592ce97f | 4939 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
4940 | Vdeactivate_mark = odeactivate; |
4941 | ||
b0310da4 | 4942 | current_buffer->read_only = old_read_only; |
d8a2934e | 4943 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 JB |
4944 | set_buffer_internal (old); |
4945 | } | |
4946 | #ifdef VMS | |
4947 | start_vms_process_read (vs); | |
4948 | #endif | |
1d2fc612 | 4949 | return nbytes; |
d0d6b7c5 JB |
4950 | } |
4951 | ||
4952 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
4953 | 0, 0, 0, | |
fdb82f93 PJ |
4954 | doc: /* Returns non-nil if emacs is waiting for input from the user. |
4955 | This is intended for use by asynchronous process output filters and sentinels. */) | |
4956 | () | |
d0d6b7c5 | 4957 | { |
8b4d685f | 4958 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
4959 | } |
4960 | \f | |
4961 | /* Sending data to subprocess */ | |
4962 | ||
4963 | jmp_buf send_process_frame; | |
0daad115 | 4964 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
4965 | |
4966 | SIGTYPE | |
4967 | send_process_trap () | |
4968 | { | |
4969 | #ifdef BSD4_1 | |
4970 | sigrelse (SIGPIPE); | |
4971 | sigrelse (SIGALRM); | |
4972 | #endif /* BSD4_1 */ | |
4973 | longjmp (send_process_frame, 1); | |
4974 | } | |
4975 | ||
4556b700 RS |
4976 | /* Send some data to process PROC. |
4977 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
4978 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
4979 | nil or t, it means that the data comes from C string. | |
0fa1789e | 4980 | |
a92e4183 KH |
4981 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
4982 | for encoding before it is sent. | |
1fb0098c GM |
4983 | |
4984 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 4985 | |
dfcf069d | 4986 | void |
4556b700 | 4987 | send_process (proc, buf, len, object) |
ecd1f654 | 4988 | volatile Lisp_Object proc; |
0daad115 GM |
4989 | unsigned char *volatile buf; |
4990 | volatile int len; | |
4991 | volatile Lisp_Object object; | |
d0d6b7c5 | 4992 | { |
ecd1f654 | 4993 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
d0d6b7c5 | 4994 | int rv; |
0fa1789e | 4995 | struct coding_system *coding; |
6044e593 RS |
4996 | struct gcpro gcpro1; |
4997 | ||
4998 | GCPRO1 (object); | |
d0d6b7c5 | 4999 | |
d0d6b7c5 JB |
5000 | #ifdef VMS |
5001 | struct Lisp_Process *p = XPROCESS (proc); | |
5002 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); | |
5003 | #endif /* VMS */ | |
5004 | ||
5005 | if (! NILP (XPROCESS (proc)->raw_status_low)) | |
5006 | update_status (XPROCESS (proc)); | |
5007 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
4dd8a783 | 5008 | error ("Process %s not running", |
d5db4077 | 5009 | SDATA (XPROCESS (proc)->name)); |
0fa1789e | 5010 | if (XINT (XPROCESS (proc)->outfd) < 0) |
4dd8a783 | 5011 | error ("Output file descriptor of %s is closed", |
d5db4077 | 5012 | SDATA (XPROCESS (proc)->name)); |
0fa1789e | 5013 | |
c7580538 | 5014 | coding = proc_encode_coding_system[XINT (XPROCESS (proc)->outfd)]; |
486b111b KH |
5015 | Vlast_coding_system_used = coding->symbol; |
5016 | ||
ed7a4b2d KH |
5017 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5018 | || (BUFFERP (object) | |
a92e4183 KH |
5019 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5020 | || EQ (object, Qt)) | |
278bfdd6 | 5021 | { |
278bfdd6 KH |
5022 | if (!EQ (coding->symbol, XPROCESS (proc)->encode_coding_system)) |
5023 | /* The coding system for encoding was changed to raw-text | |
5024 | because we sent a unibyte text previously. Now we are | |
5025 | sending a multibyte text, thus we must encode it by the | |
5026 | original coding system specified for the current | |
5027 | process. */ | |
fbb70ad9 EZ |
5028 | setup_coding_system (XPROCESS (proc)->encode_coding_system, coding); |
5029 | /* src_multibyte should be set to 1 _after_ a call to | |
5030 | setup_coding_system, since it resets src_multibyte to | |
5031 | zero. */ | |
5032 | coding->src_multibyte = 1; | |
278bfdd6 KH |
5033 | } |
5034 | else | |
5035 | { | |
a92e4183 KH |
5036 | /* For sending a unibyte text, character code conversion should |
5037 | not take place but EOL conversion should. So, setup raw-text | |
5038 | or one of the subsidiary if we have not yet done it. */ | |
5039 | if (coding->type != coding_type_raw_text) | |
5040 | { | |
5041 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5042 | { | |
5043 | /* But, before changing the coding, we must flush out data. */ | |
5044 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5045 | send_process (proc, "", 0, Qt); | |
5046 | } | |
5047 | coding->src_multibyte = 0; | |
5048 | setup_raw_text_coding_system (coding); | |
5049 | } | |
278bfdd6 | 5050 | } |
a4a37e65 KH |
5051 | coding->dst_multibyte = 0; |
5052 | ||
ed7a4b2d | 5053 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e KH |
5054 | { |
5055 | int require = encoding_buffer_size (coding, len); | |
0daad115 | 5056 | int from_byte = -1, from = -1, to = -1; |
0fa1789e | 5057 | |
ed7a4b2d | 5058 | if (BUFFERP (object)) |
0fa1789e | 5059 | { |
ed7a4b2d KH |
5060 | from_byte = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5061 | from = buf_bytepos_to_charpos (XBUFFER (object), from_byte); | |
5062 | to = buf_bytepos_to_charpos (XBUFFER (object), from_byte + len); | |
5063 | } | |
5064 | else if (STRINGP (object)) | |
5065 | { | |
d5db4077 | 5066 | from_byte = buf - SDATA (object); |
ed7a4b2d KH |
5067 | from = string_byte_to_char (object, from_byte); |
5068 | to = string_byte_to_char (object, from_byte + len); | |
0fa1789e KH |
5069 | } |
5070 | ||
452294c2 GM |
5071 | if (coding->composing != COMPOSITION_DISABLED) |
5072 | { | |
5073 | if (from_byte >= 0) | |
5074 | coding_save_composition (coding, from, to, object); | |
5075 | else | |
5076 | coding->composing = COMPOSITION_DISABLED; | |
5077 | } | |
ed7a4b2d | 5078 | |
d5db4077 | 5079 | if (SBYTES (XPROCESS (proc)->encoding_buf) < require) |
ed7a4b2d KH |
5080 | XPROCESS (proc)->encoding_buf = make_uninit_string (require); |
5081 | ||
5082 | if (from_byte >= 0) | |
5083 | buf = (BUFFERP (object) | |
5084 | ? BUF_BYTE_ADDRESS (XBUFFER (object), from_byte) | |
d5db4077 | 5085 | : SDATA (object) + from_byte); |
0fa1789e | 5086 | |
0fa1789e | 5087 | object = XPROCESS (proc)->encoding_buf; |
d5db4077 KR |
5088 | encode_coding (coding, (char *) buf, SDATA (object), |
5089 | len, SBYTES (object)); | |
e7fbaa65 | 5090 | len = coding->produced; |
d5db4077 | 5091 | buf = SDATA (object); |
0fa1789e | 5092 | } |
d0d6b7c5 JB |
5093 | |
5094 | #ifdef VMS | |
5095 | vs = get_vms_process_pointer (p->pid); | |
5096 | if (vs == 0) | |
5097 | error ("Could not find this process: %x", p->pid); | |
5098 | else if (write_to_vms_process (vs, buf, len)) | |
5099 | ; | |
0daad115 | 5100 | #else /* not VMS */ |
4556b700 RS |
5101 | |
5102 | if (pty_max_bytes == 0) | |
5103 | { | |
5104 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
5105 | pty_max_bytes = fpathconf (XFASTINT (XPROCESS (proc)->outfd), | |
5106 | _PC_MAX_CANON); | |
5107 | if (pty_max_bytes < 0) | |
5108 | pty_max_bytes = 250; | |
5109 | #else | |
5110 | pty_max_bytes = 250; | |
5111 | #endif | |
5112 | /* Deduct one, to leave space for the eof. */ | |
5113 | pty_max_bytes--; | |
5114 | } | |
5115 | ||
0daad115 GM |
5116 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5117 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5118 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5119 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5120 | { |
5121 | process_sent_to = proc; | |
5122 | while (len > 0) | |
5123 | { | |
5124 | int this = len; | |
5125 | SIGTYPE (*old_sigpipe)(); | |
93b4f699 | 5126 | |
0daad115 GM |
5127 | /* Decide how much data we can send in one batch. |
5128 | Long lines need to be split into multiple batches. */ | |
5129 | if (!NILP (XPROCESS (proc)->pty_flag)) | |
5130 | { | |
c0ec53ad SM |
5131 | /* Starting this at zero is always correct when not the first |
5132 | iteration because the previous iteration ended by sending C-d. | |
0daad115 GM |
5133 | It may not be correct for the first iteration |
5134 | if a partial line was sent in a separate send_process call. | |
5135 | If that proves worth handling, we need to save linepos | |
5136 | in the process object. */ | |
5137 | int linepos = 0; | |
5138 | unsigned char *ptr = (unsigned char *) buf; | |
5139 | unsigned char *end = (unsigned char *) buf + len; | |
5140 | ||
5141 | /* Scan through this text for a line that is too long. */ | |
5142 | while (ptr != end && linepos < pty_max_bytes) | |
5143 | { | |
5144 | if (*ptr == '\n') | |
5145 | linepos = 0; | |
5146 | else | |
5147 | linepos++; | |
5148 | ptr++; | |
5149 | } | |
5150 | /* If we found one, break the line there | |
5151 | and put in a C-d to force the buffer through. */ | |
5152 | this = ptr - buf; | |
5153 | } | |
93b4f699 | 5154 | |
0daad115 GM |
5155 | /* Send this batch, using one or more write calls. */ |
5156 | while (this > 0) | |
5157 | { | |
e690ca94 | 5158 | int outfd = XINT (XPROCESS (proc)->outfd); |
0daad115 | 5159 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5160 | #ifdef DATAGRAM_SOCKETS |
5161 | if (DATAGRAM_CHAN_P (outfd)) | |
5162 | { | |
5163 | rv = sendto (outfd, (char *) buf, this, | |
5164 | 0, datagram_address[outfd].sa, | |
5165 | datagram_address[outfd].len); | |
5166 | if (rv < 0 && errno == EMSGSIZE) | |
5167 | report_file_error ("sending datagram", Fcons (proc, Qnil)); | |
5168 | } | |
5169 | else | |
5170 | #endif | |
5171 | rv = emacs_write (outfd, (char *) buf, this); | |
0daad115 | 5172 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5173 | |
0daad115 GM |
5174 | if (rv < 0) |
5175 | { | |
5176 | if (0 | |
d0d6b7c5 | 5177 | #ifdef EWOULDBLOCK |
0daad115 | 5178 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5179 | #endif |
5180 | #ifdef EAGAIN | |
0daad115 | 5181 | || errno == EAGAIN |
d0d6b7c5 | 5182 | #endif |
0daad115 | 5183 | ) |
177c0ea7 | 5184 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5185 | that may allow the program |
5186 | to finish doing output and read more. */ | |
5187 | { | |
5188 | Lisp_Object zero; | |
5189 | int offset = 0; | |
4556b700 | 5190 | |
3433b6bd | 5191 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5192 | /* A gross hack to work around a bug in FreeBSD. |
5193 | In the following sequence, read(2) returns | |
5194 | bogus data: | |
5195 | ||
5196 | write(2) 1022 bytes | |
5197 | write(2) 954 bytes, get EAGAIN | |
5198 | read(2) 1024 bytes in process_read_output | |
5199 | read(2) 11 bytes in process_read_output | |
5200 | ||
5201 | That is, read(2) returns more bytes than have | |
5202 | ever been written successfully. The 1033 bytes | |
5203 | read are the 1022 bytes written successfully | |
5204 | after processing (for example with CRs added if | |
5205 | the terminal is set up that way which it is | |
5206 | here). The same bytes will be seen again in a | |
5207 | later read(2), without the CRs. */ | |
177c0ea7 | 5208 | |
0daad115 GM |
5209 | if (errno == EAGAIN) |
5210 | { | |
5211 | int flags = FWRITE; | |
5212 | ioctl (XINT (XPROCESS (proc)->outfd), TIOCFLUSH, | |
5213 | &flags); | |
5214 | } | |
3433b6bd | 5215 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5216 | |
0daad115 GM |
5217 | /* Running filters might relocate buffers or strings. |
5218 | Arrange to relocate BUF. */ | |
5219 | if (BUFFERP (object)) | |
5220 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); | |
5221 | else if (STRINGP (object)) | |
d5db4077 | 5222 | offset = buf - SDATA (object); |
0daad115 GM |
5223 | |
5224 | XSETFASTINT (zero, 0); | |
f3e6605c | 5225 | #ifdef EMACS_HAS_USECS |
0daad115 | 5226 | wait_reading_process_input (0, 20000, zero, 0); |
f3e6605c | 5227 | #else |
0daad115 | 5228 | wait_reading_process_input (1, 0, zero, 0); |
f3e6605c | 5229 | #endif |
4556b700 | 5230 | |
0daad115 GM |
5231 | if (BUFFERP (object)) |
5232 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); | |
5233 | else if (STRINGP (object)) | |
d5db4077 | 5234 | buf = offset + SDATA (object); |
4556b700 | 5235 | |
0daad115 GM |
5236 | rv = 0; |
5237 | } | |
5238 | else | |
5239 | /* This is a real error. */ | |
5240 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5241 | } | |
5242 | buf += rv; | |
5243 | len -= rv; | |
5244 | this -= rv; | |
5245 | } | |
f76475ad | 5246 | |
0daad115 GM |
5247 | /* If we sent just part of the string, put in an EOF |
5248 | to force it through, before we send the rest. */ | |
5249 | if (len > 0) | |
5250 | Fprocess_send_eof (proc); | |
5251 | } | |
5252 | } | |
5253 | #endif /* not VMS */ | |
d0d6b7c5 JB |
5254 | else |
5255 | { | |
0daad115 GM |
5256 | #ifndef VMS |
5257 | proc = process_sent_to; | |
5258 | #endif | |
d0d6b7c5 JB |
5259 | XPROCESS (proc)->raw_status_low = Qnil; |
5260 | XPROCESS (proc)->raw_status_high = Qnil; | |
5261 | XPROCESS (proc)->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5262 | XSETINT (XPROCESS (proc)->tick, ++process_tick); | |
5263 | deactivate_process (proc); | |
5264 | #ifdef VMS | |
177c0ea7 | 5265 | error ("Error writing to process %s; closed it", |
d5db4077 | 5266 | SDATA (XPROCESS (proc)->name)); |
d0d6b7c5 | 5267 | #else |
4dd8a783 | 5268 | error ("SIGPIPE raised on process %s; closed it", |
d5db4077 | 5269 | SDATA (XPROCESS (proc)->name)); |
d0d6b7c5 JB |
5270 | #endif |
5271 | } | |
6044e593 RS |
5272 | |
5273 | UNGCPRO; | |
d0d6b7c5 JB |
5274 | } |
5275 | ||
5276 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5277 | 3, 3, 0, |
5278 | doc: /* Send current contents of region as input to PROCESS. | |
5279 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5280 | nil, indicating the current buffer's process. | |
5281 | Called from program, takes three arguments, PROCESS, START and END. | |
5282 | If the region is more than 500 characters long, | |
5283 | it is sent in several bunches. This may happen even for shorter regions. | |
5284 | Output from processes can arrive in between bunches. */) | |
5285 | (process, start, end) | |
d0d6b7c5 JB |
5286 | Lisp_Object process, start, end; |
5287 | { | |
5288 | Lisp_Object proc; | |
d8a2934e | 5289 | int start1, end1; |
d0d6b7c5 JB |
5290 | |
5291 | proc = get_process (process); | |
5292 | validate_region (&start, &end); | |
5293 | ||
5294 | if (XINT (start) < GPT && XINT (end) > GPT) | |
4da6dec8 | 5295 | move_gap (XINT (start)); |
d0d6b7c5 | 5296 | |
d8a2934e RS |
5297 | start1 = CHAR_TO_BYTE (XINT (start)); |
5298 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5299 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
4556b700 | 5300 | Fcurrent_buffer ()); |
d0d6b7c5 JB |
5301 | |
5302 | return Qnil; | |
5303 | } | |
5304 | ||
5305 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5306 | 2, 2, 0, |
5307 | doc: /* Send PROCESS the contents of STRING as input. | |
5308 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5309 | nil, indicating the current buffer's process. | |
5310 | If STRING is more than 500 characters long, | |
5311 | it is sent in several bunches. This may happen even for shorter strings. | |
5312 | Output from processes can arrive in between bunches. */) | |
5313 | (process, string) | |
d0d6b7c5 JB |
5314 | Lisp_Object process, string; |
5315 | { | |
5316 | Lisp_Object proc; | |
b7826503 | 5317 | CHECK_STRING (string); |
d0d6b7c5 | 5318 | proc = get_process (process); |
d5db4077 KR |
5319 | send_process (proc, SDATA (string), |
5320 | SBYTES (string), string); | |
d0d6b7c5 JB |
5321 | return Qnil; |
5322 | } | |
5323 | \f | |
16782258 JD |
5324 | /* Return the foreground process group for the tty/pty that |
5325 | the process P uses. */ | |
5326 | static int | |
5327 | emacs_get_tty_pgrp (p) | |
5328 | struct Lisp_Process *p; | |
5329 | { | |
5330 | int gid = -1; | |
5331 | ||
5332 | #ifdef TIOCGPGRP | |
5333 | if (ioctl (XINT (p->infd), TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) | |
5334 | { | |
5335 | int fd; | |
5336 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5337 | master side. Try the slave side. */ | |
5338 | fd = emacs_open (XSTRING (p->tty_name)->data, O_RDONLY, 0); | |
5339 | ||
5340 | if (fd != -1) | |
5341 | { | |
5342 | ioctl (fd, TIOCGPGRP, &gid); | |
5343 | emacs_close (fd); | |
5344 | } | |
5345 | } | |
5346 | #endif /* defined (TIOCGPGRP ) */ | |
5347 | ||
5348 | return gid; | |
5349 | } | |
5350 | ||
b81ea5ef RS |
5351 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5352 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5353 | doc: /* Return t if PROCESS has given the terminal to a child. |
5354 | If the operating system does not make it possible to find out, | |
5355 | return t unconditionally. */) | |
5356 | (process) | |
b81ea5ef RS |
5357 | Lisp_Object process; |
5358 | { | |
5359 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5360 | in a way that will cause returning t. */ | |
16782258 | 5361 | int gid; |
b81ea5ef RS |
5362 | Lisp_Object proc; |
5363 | struct Lisp_Process *p; | |
5364 | ||
5365 | proc = get_process (process); | |
5366 | p = XPROCESS (proc); | |
5367 | ||
5368 | if (!EQ (p->childp, Qt)) | |
5369 | error ("Process %s is not a subprocess", | |
d5db4077 | 5370 | SDATA (p->name)); |
b81ea5ef RS |
5371 | if (XINT (p->infd) < 0) |
5372 | error ("Process %s is not active", | |
d5db4077 | 5373 | SDATA (p->name)); |
b81ea5ef | 5374 | |
16782258 | 5375 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef RS |
5376 | |
5377 | if (gid == XFASTINT (p->pid)) | |
5378 | return Qnil; | |
5379 | return Qt; | |
5380 | } | |
5381 | \f | |
d0d6b7c5 | 5382 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5383 | If CURRENT_GROUP is t, that means send to the process group |
5384 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5385 | This is used for various commands in shell mode. |
b81ea5ef RS |
5386 | If CURRENT_GROUP is lambda, that means send to the process group |
5387 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5388 | ||
d0d6b7c5 | 5389 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5390 | right away. |
5391 | ||
5392 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5393 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5394 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5395 | |
f9738840 | 5396 | static void |
d0d6b7c5 JB |
5397 | process_send_signal (process, signo, current_group, nomsg) |
5398 | Lisp_Object process; | |
5399 | int signo; | |
5400 | Lisp_Object current_group; | |
5401 | int nomsg; | |
5402 | { | |
5403 | Lisp_Object proc; | |
5404 | register struct Lisp_Process *p; | |
5405 | int gid; | |
5406 | int no_pgrp = 0; | |
5407 | ||
5408 | proc = get_process (process); | |
5409 | p = XPROCESS (proc); | |
5410 | ||
5411 | if (!EQ (p->childp, Qt)) | |
5412 | error ("Process %s is not a subprocess", | |
d5db4077 | 5413 | SDATA (p->name)); |
a9f2c884 | 5414 | if (XINT (p->infd) < 0) |
d0d6b7c5 | 5415 | error ("Process %s is not active", |
d5db4077 | 5416 | SDATA (p->name)); |
d0d6b7c5 JB |
5417 | |
5418 | if (NILP (p->pty_flag)) | |
5419 | current_group = Qnil; | |
5420 | ||
d0d6b7c5 | 5421 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5422 | if (NILP (current_group)) |
5423 | /* Send the signal to the shell's process group. */ | |
5424 | gid = XFASTINT (p->pid); | |
5425 | else | |
d0d6b7c5 | 5426 | { |
b0310da4 | 5427 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5428 | /* If possible, send signals to the entire pgrp |
5429 | by sending an input character to it. */ | |
b0310da4 | 5430 | |
6be429b1 JB |
5431 | /* TERMIOS is the latest and bestest, and seems most likely to |
5432 | work. If the system has it, use it. */ | |
5433 | #ifdef HAVE_TERMIOS | |
5434 | struct termios t; | |
5435 | ||
5436 | switch (signo) | |
5437 | { | |
5438 | case SIGINT: | |
a9f2c884 | 5439 | tcgetattr (XINT (p->infd), &t); |
4556b700 | 5440 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
a87b802f | 5441 | return; |
6be429b1 JB |
5442 | |
5443 | case SIGQUIT: | |
a9f2c884 | 5444 | tcgetattr (XINT (p->infd), &t); |
4556b700 | 5445 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
a87b802f | 5446 | return; |
6be429b1 JB |
5447 | |
5448 | case SIGTSTP: | |
a9f2c884 | 5449 | tcgetattr (XINT (p->infd), &t); |
d0adf46f | 5450 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
4556b700 | 5451 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
6be429b1 | 5452 | #else |
4556b700 | 5453 | send_process (proc, &t.c_cc[VSUSP], 1, Qnil); |
6be429b1 | 5454 | #endif |
a87b802f | 5455 | return; |
6be429b1 JB |
5456 | } |
5457 | ||
5458 | #else /* ! HAVE_TERMIOS */ | |
5459 | ||
b0310da4 JB |
5460 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5461 | current control characters. */ | |
d0d6b7c5 | 5462 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5463 | |
d0d6b7c5 JB |
5464 | struct tchars c; |
5465 | struct ltchars lc; | |
5466 | ||
5467 | switch (signo) | |
5468 | { | |
5469 | case SIGINT: | |
a9f2c884 | 5470 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5471 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 5472 | return; |
d0d6b7c5 | 5473 | case SIGQUIT: |
a9f2c884 | 5474 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5475 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 5476 | return; |
0ad77c54 | 5477 | #ifdef SIGTSTP |
d0d6b7c5 | 5478 | case SIGTSTP: |
a9f2c884 | 5479 | ioctl (XINT (p->infd), TIOCGLTC, &lc); |
4556b700 | 5480 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 5481 | return; |
b0310da4 | 5482 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5483 | } |
b0310da4 JB |
5484 | |
5485 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
5486 | ||
5487 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
5488 | characters. */ | |
5489 | #ifdef TCGETA | |
d0d6b7c5 JB |
5490 | struct termio t; |
5491 | switch (signo) | |
5492 | { | |
5493 | case SIGINT: | |
a9f2c884 | 5494 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5495 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 5496 | return; |
d0d6b7c5 | 5497 | case SIGQUIT: |
a9f2c884 | 5498 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5499 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 5500 | return; |
7d79e3b4 | 5501 | #ifdef SIGTSTP |
d0d6b7c5 | 5502 | case SIGTSTP: |
a9f2c884 | 5503 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5504 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 5505 | return; |
b0310da4 | 5506 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5507 | } |
b0310da4 JB |
5508 | #else /* ! defined (TCGETA) */ |
5509 | Your configuration files are messed up. | |
5510 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
5511 | you'd better be using one of the alternatives above! */ | |
5512 | #endif /* ! defined (TCGETA) */ | |
5513 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
6be429b1 | 5514 | #endif /* ! defined HAVE_TERMIOS */ |
20505336 RS |
5515 | abort (); |
5516 | /* The code above always returns from the function. */ | |
5517 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ | |
d0d6b7c5 | 5518 | |
177c0ea7 | 5519 | #ifdef TIOCGPGRP |
2af70a0c | 5520 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5521 | Otherwise, use the pty to get the pgrp. |
5522 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5523 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5524 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5525 | His patch indicates that if TIOCGPGRP returns an error, then |
5526 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5527 | |
16782258 JD |
5528 | gid = emacs_get_tty_pgrp (p); |
5529 | ||
5530 | if (gid == -1) | |
5531 | /* If we can't get the information, assume | |
5532 | the shell owns the tty. */ | |
5533 | gid = XFASTINT (p->pid); | |
2af70a0c RS |
5534 | |
5535 | /* It is not clear whether anything really can set GID to -1. | |
5536 | Perhaps on some system one of those ioctls can or could do so. | |
5537 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5538 | if (gid == -1) |
5539 | no_pgrp = 1; | |
b0310da4 | 5540 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5541 | /* Can't select pgrps on this system, so we know that |
5542 | the child itself heads the pgrp. */ | |
2af70a0c | 5543 | gid = XFASTINT (p->pid); |
301c3fe4 | 5544 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5545 | |
5546 | /* If current_group is lambda, and the shell owns the terminal, | |
5547 | don't send any signal. */ | |
2af70a0c | 5548 | if (EQ (current_group, Qlambda) && gid == XFASTINT (p->pid)) |
b81ea5ef | 5549 | return; |
d0d6b7c5 | 5550 | } |
d0d6b7c5 JB |
5551 | |
5552 | switch (signo) | |
5553 | { | |
5554 | #ifdef SIGCONT | |
5555 | case SIGCONT: | |
5556 | p->raw_status_low = Qnil; | |
5557 | p->raw_status_high = Qnil; | |
5558 | p->status = Qrun; | |
5559 | XSETINT (p->tick, ++process_tick); | |
5560 | if (!nomsg) | |
5561 | status_notify (); | |
5562 | break; | |
301c3fe4 | 5563 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 JB |
5564 | case SIGINT: |
5565 | #ifdef VMS | |
4556b700 | 5566 | send_process (proc, "\003", 1, Qnil); /* ^C */ |
d0d6b7c5 JB |
5567 | goto whoosh; |
5568 | #endif | |
5569 | case SIGQUIT: | |
5570 | #ifdef VMS | |
4556b700 | 5571 | send_process (proc, "\031", 1, Qnil); /* ^Y */ |
d0d6b7c5 JB |
5572 | goto whoosh; |
5573 | #endif | |
5574 | case SIGKILL: | |
5575 | #ifdef VMS | |
5576 | sys$forcex (&(XFASTINT (p->pid)), 0, 1); | |
5577 | whoosh: | |
5578 | #endif | |
a9f2c884 | 5579 | flush_pending_output (XINT (p->infd)); |
d0d6b7c5 JB |
5580 | break; |
5581 | } | |
5582 | ||
5583 | /* If we don't have process groups, send the signal to the immediate | |
5584 | subprocess. That isn't really right, but it's better than any | |
5585 | obvious alternative. */ | |
5586 | if (no_pgrp) | |
5587 | { | |
5588 | kill (XFASTINT (p->pid), signo); | |
5589 | return; | |
5590 | } | |
5591 | ||
5592 | /* gid may be a pid, or minus a pgrp's number */ | |
5593 | #ifdef TIOCSIGSEND | |
5594 | if (!NILP (current_group)) | |
16782258 JD |
5595 | { |
5596 | if (ioctl (XINT (p->infd), TIOCSIGSEND, signo) == -1) | |
5597 | EMACS_KILLPG (gid, signo); | |
5598 | } | |
d0d6b7c5 JB |
5599 | else |
5600 | { | |
5601 | gid = - XFASTINT (p->pid); | |
5602 | kill (gid, signo); | |
5603 | } | |
301c3fe4 | 5604 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5605 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5606 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5607 | } |
5608 | ||
5609 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5610 | doc: /* Interrupt process PROCESS. |
5611 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
5612 | nil or no arg means current buffer's process. | |
5613 | Second arg CURRENT-GROUP non-nil means send signal to | |
5614 | the current process-group of the process's controlling terminal | |
5615 | rather than to the process's own process group. | |
5616 | If the process is a shell, this means interrupt current subjob | |
5617 | rather than the shell. | |
5618 | ||
5619 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5620 | don't send the signal. */) | |
5621 | (process, current_group) | |
d0d6b7c5 JB |
5622 | Lisp_Object process, current_group; |
5623 | { | |
5624 | process_send_signal (process, SIGINT, current_group, 0); | |
5625 | return process; | |
5626 | } | |
5627 | ||
5628 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5629 | doc: /* Kill process PROCESS. May be process or name of one. |
5630 | See function `interrupt-process' for more details on usage. */) | |
5631 | (process, current_group) | |
d0d6b7c5 JB |
5632 | Lisp_Object process, current_group; |
5633 | { | |
5634 | process_send_signal (process, SIGKILL, current_group, 0); | |
5635 | return process; | |
5636 | } | |
5637 | ||
5638 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5639 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5640 | See function `interrupt-process' for more details on usage. */) | |
5641 | (process, current_group) | |
d0d6b7c5 JB |
5642 | Lisp_Object process, current_group; |
5643 | { | |
5644 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5645 | return process; | |
5646 | } | |
5647 | ||
5648 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5649 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5650 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5651 | If PROCESS is a network process, inhibit handling of incoming traffic. */) |
fdb82f93 | 5652 | (process, current_group) |
d0d6b7c5 JB |
5653 | Lisp_Object process, current_group; |
5654 | { | |
e690ca94 KS |
5655 | #ifdef HAVE_SOCKETS |
5656 | if (PROCESSP (process) && NETCONN_P (process)) | |
5657 | { | |
5658 | struct Lisp_Process *p; | |
177c0ea7 | 5659 | |
e690ca94 KS |
5660 | p = XPROCESS (process); |
5661 | if (NILP (p->command) | |
5662 | && XINT (p->infd) >= 0) | |
5663 | { | |
5664 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
5665 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
5666 | } | |
5667 | p->command = Qt; | |
5668 | return process; | |
5669 | } | |
5670 | #endif | |
d0d6b7c5 JB |
5671 | #ifndef SIGTSTP |
5672 | error ("no SIGTSTP support"); | |
5673 | #else | |
5674 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5675 | #endif | |
5676 | return process; | |
5677 | } | |
5678 | ||
5679 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5680 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5681 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5682 | If PROCESS is a network process, resume handling of incoming traffic. */) |
fdb82f93 | 5683 | (process, current_group) |
d0d6b7c5 JB |
5684 | Lisp_Object process, current_group; |
5685 | { | |
e690ca94 KS |
5686 | #ifdef HAVE_SOCKETS |
5687 | if (PROCESSP (process) && NETCONN_P (process)) | |
5688 | { | |
5689 | struct Lisp_Process *p; | |
5690 | ||
5691 | p = XPROCESS (process); | |
5692 | if (EQ (p->command, Qt) | |
5693 | && XINT (p->infd) >= 0 | |
5694 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) | |
5695 | { | |
5696 | FD_SET (XINT (p->infd), &input_wait_mask); | |
5697 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
5698 | } | |
5699 | p->command = Qnil; | |
5700 | return process; | |
5701 | } | |
5702 | #endif | |
d0d6b7c5 JB |
5703 | #ifdef SIGCONT |
5704 | process_send_signal (process, SIGCONT, current_group, 0); | |
5705 | #else | |
5706 | error ("no SIGCONT support"); | |
5707 | #endif | |
5708 | return process; | |
5709 | } | |
5710 | ||
5711 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
5712 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
5713 | doc: /* Send PROCESS the signal with code SIGCODE. | |
5714 | PROCESS may also be an integer specifying the process id of the | |
5715 | process to signal; in this case, the process need not be a child of | |
5716 | this Emacs. | |
fdb82f93 | 5717 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
5718 | (process, sigcode) |
5719 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 5720 | { |
cdd5ea86 KS |
5721 | Lisp_Object pid; |
5722 | ||
5723 | if (INTEGERP (process)) | |
5724 | { | |
5725 | pid = process; | |
5726 | goto got_it; | |
5727 | } | |
5728 | ||
5729 | if (STRINGP (process)) | |
5730 | { | |
5731 | Lisp_Object tem; | |
5732 | if (tem = Fget_process (process), NILP (tem)) | |
5733 | { | |
5734 | pid = Fstring_to_number (process, make_number (10)); | |
5735 | if (XINT (pid) != 0) | |
5736 | goto got_it; | |
5737 | } | |
5738 | process = tem; | |
5739 | } | |
5740 | else | |
5741 | process = get_process (process); | |
177c0ea7 | 5742 | |
cdd5ea86 KS |
5743 | if (NILP (process)) |
5744 | return process; | |
5745 | ||
5746 | CHECK_PROCESS (process); | |
5747 | pid = XPROCESS (process)->pid; | |
5748 | if (!INTEGERP (pid) || XINT (pid) <= 0) | |
5749 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); | |
5750 | ||
5751 | got_it: | |
4766242d RS |
5752 | |
5753 | #define handle_signal(NAME, VALUE) \ | |
5754 | else if (!strcmp (name, NAME)) \ | |
5755 | XSETINT (sigcode, VALUE) | |
5756 | ||
5757 | if (INTEGERP (sigcode)) | |
5758 | ; | |
5759 | else | |
5760 | { | |
5761 | unsigned char *name; | |
5762 | ||
b7826503 | 5763 | CHECK_SYMBOL (sigcode); |
d5db4077 | 5764 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d RS |
5765 | |
5766 | if (0) | |
5767 | ; | |
5768 | #ifdef SIGHUP | |
5769 | handle_signal ("SIGHUP", SIGHUP); | |
5770 | #endif | |
5771 | #ifdef SIGINT | |
5772 | handle_signal ("SIGINT", SIGINT); | |
5773 | #endif | |
5774 | #ifdef SIGQUIT | |
5775 | handle_signal ("SIGQUIT", SIGQUIT); | |
5776 | #endif | |
5777 | #ifdef SIGILL | |
5778 | handle_signal ("SIGILL", SIGILL); | |
5779 | #endif | |
5780 | #ifdef SIGABRT | |
5781 | handle_signal ("SIGABRT", SIGABRT); | |
5782 | #endif | |
5783 | #ifdef SIGEMT | |
5784 | handle_signal ("SIGEMT", SIGEMT); | |
5785 | #endif | |
5786 | #ifdef SIGKILL | |
5787 | handle_signal ("SIGKILL", SIGKILL); | |
5788 | #endif | |
5789 | #ifdef SIGFPE | |
5790 | handle_signal ("SIGFPE", SIGFPE); | |
5791 | #endif | |
5792 | #ifdef SIGBUS | |
5793 | handle_signal ("SIGBUS", SIGBUS); | |
5794 | #endif | |
5795 | #ifdef SIGSEGV | |
5796 | handle_signal ("SIGSEGV", SIGSEGV); | |
5797 | #endif | |
5798 | #ifdef SIGSYS | |
5799 | handle_signal ("SIGSYS", SIGSYS); | |
5800 | #endif | |
5801 | #ifdef SIGPIPE | |
5802 | handle_signal ("SIGPIPE", SIGPIPE); | |
5803 | #endif | |
5804 | #ifdef SIGALRM | |
5805 | handle_signal ("SIGALRM", SIGALRM); | |
5806 | #endif | |
5807 | #ifdef SIGTERM | |
5808 | handle_signal ("SIGTERM", SIGTERM); | |
5809 | #endif | |
5810 | #ifdef SIGURG | |
5811 | handle_signal ("SIGURG", SIGURG); | |
5812 | #endif | |
5813 | #ifdef SIGSTOP | |
5814 | handle_signal ("SIGSTOP", SIGSTOP); | |
5815 | #endif | |
5816 | #ifdef SIGTSTP | |
5817 | handle_signal ("SIGTSTP", SIGTSTP); | |
5818 | #endif | |
5819 | #ifdef SIGCONT | |
5820 | handle_signal ("SIGCONT", SIGCONT); | |
5821 | #endif | |
5822 | #ifdef SIGCHLD | |
5823 | handle_signal ("SIGCHLD", SIGCHLD); | |
5824 | #endif | |
5825 | #ifdef SIGTTIN | |
5826 | handle_signal ("SIGTTIN", SIGTTIN); | |
5827 | #endif | |
5828 | #ifdef SIGTTOU | |
5829 | handle_signal ("SIGTTOU", SIGTTOU); | |
5830 | #endif | |
5831 | #ifdef SIGIO | |
5832 | handle_signal ("SIGIO", SIGIO); | |
5833 | #endif | |
5834 | #ifdef SIGXCPU | |
5835 | handle_signal ("SIGXCPU", SIGXCPU); | |
5836 | #endif | |
5837 | #ifdef SIGXFSZ | |
5838 | handle_signal ("SIGXFSZ", SIGXFSZ); | |
5839 | #endif | |
5840 | #ifdef SIGVTALRM | |
5841 | handle_signal ("SIGVTALRM", SIGVTALRM); | |
5842 | #endif | |
5843 | #ifdef SIGPROF | |
5844 | handle_signal ("SIGPROF", SIGPROF); | |
5845 | #endif | |
5846 | #ifdef SIGWINCH | |
5847 | handle_signal ("SIGWINCH", SIGWINCH); | |
5848 | #endif | |
5849 | #ifdef SIGINFO | |
5850 | handle_signal ("SIGINFO", SIGINFO); | |
5851 | #endif | |
5852 | #ifdef SIGUSR1 | |
5853 | handle_signal ("SIGUSR1", SIGUSR1); | |
5854 | #endif | |
5855 | #ifdef SIGUSR2 | |
5856 | handle_signal ("SIGUSR2", SIGUSR2); | |
5857 | #endif | |
5858 | else | |
9fa195a2 | 5859 | error ("Undefined signal name %s", name); |
4766242d RS |
5860 | } |
5861 | ||
5862 | #undef handle_signal | |
5863 | ||
4766242d | 5864 | return make_number (kill (XINT (pid), XINT (sigcode))); |
d0d6b7c5 JB |
5865 | } |
5866 | ||
5867 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
5868 | doc: /* Make PROCESS see end-of-file in its input. |
5869 | EOF comes after any text already sent to it. | |
5870 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5871 | nil, indicating the current buffer's process. | |
5872 | If PROCESS is a network connection, or is a process communicating | |
5873 | through a pipe (as opposed to a pty), then you cannot send any more | |
5874 | text to PROCESS after you call this function. */) | |
5875 | (process) | |
d0d6b7c5 JB |
5876 | Lisp_Object process; |
5877 | { | |
5878 | Lisp_Object proc; | |
de7fbd09 | 5879 | struct coding_system *coding; |
d0d6b7c5 | 5880 | |
e690ca94 KS |
5881 | if (DATAGRAM_CONN_P (process)) |
5882 | return process; | |
5883 | ||
d0d6b7c5 | 5884 | proc = get_process (process); |
de7fbd09 | 5885 | coding = proc_encode_coding_system[XINT (XPROCESS (proc)->outfd)]; |
577d03d5 RS |
5886 | |
5887 | /* Make sure the process is really alive. */ | |
5888 | if (! NILP (XPROCESS (proc)->raw_status_low)) | |
5889 | update_status (XPROCESS (proc)); | |
5890 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 5891 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 5892 | |
de7fbd09 KH |
5893 | if (CODING_REQUIRE_FLUSHING (coding)) |
5894 | { | |
5895 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5896 | send_process (proc, "", 0, Qnil); | |
5897 | } | |
5898 | ||
d0d6b7c5 | 5899 | #ifdef VMS |
4556b700 | 5900 | send_process (proc, "\032", 1, Qnil); /* ^z */ |
d0d6b7c5 JB |
5901 | #else |
5902 | if (!NILP (XPROCESS (proc)->pty_flag)) | |
4556b700 | 5903 | send_process (proc, "\004", 1, Qnil); |
d0d6b7c5 JB |
5904 | else |
5905 | { | |
4525f571 RS |
5906 | int old_outfd, new_outfd; |
5907 | ||
93853f3d | 5908 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
5909 | /* If this is a network connection, or socketpair is used |
5910 | for communication with the subprocess, call shutdown to cause EOF. | |
5911 | (In some old system, shutdown to socketpair doesn't work. | |
5912 | Then we just can't win.) */ | |
5913 | if (NILP (XPROCESS (proc)->pid) | |
5914 | || XINT (XPROCESS (proc)->outfd) == XINT (XPROCESS (proc)->infd)) | |
5915 | shutdown (XINT (XPROCESS (proc)->outfd), 1); | |
5916 | /* In case of socketpair, outfd == infd, so don't close it. */ | |
5917 | if (XINT (XPROCESS (proc)->outfd) != XINT (XPROCESS (proc)->infd)) | |
68c45bf0 | 5918 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 5919 | #else /* not HAVE_SHUTDOWN */ |
68c45bf0 | 5920 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 5921 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 5922 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
4525f571 RS |
5923 | old_outfd = XINT (XPROCESS (proc)->outfd); |
5924 | ||
5925 | if (!proc_encode_coding_system[new_outfd]) | |
5926 | proc_encode_coding_system[new_outfd] | |
5927 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
5928 | bcopy (proc_encode_coding_system[old_outfd], | |
5929 | proc_encode_coding_system[new_outfd], | |
5930 | sizeof (struct coding_system)); | |
5931 | bzero (proc_encode_coding_system[old_outfd], | |
5932 | sizeof (struct coding_system)); | |
5933 | ||
5934 | XSETINT (XPROCESS (proc)->outfd, new_outfd); | |
d0d6b7c5 JB |
5935 | } |
5936 | #endif /* VMS */ | |
d0d6b7c5 JB |
5937 | return process; |
5938 | } | |
5939 | ||
5940 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 5941 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 5942 | |
6b53bb85 | 5943 | void |
d0d6b7c5 JB |
5944 | kill_buffer_processes (buffer) |
5945 | Lisp_Object buffer; | |
5946 | { | |
5947 | Lisp_Object tail, proc; | |
5948 | ||
70949dac | 5949 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 5950 | { |
70949dac | 5951 | proc = XCDR (XCAR (tail)); |
b5b502d6 | 5952 | if (GC_PROCESSP (proc) |
d0d6b7c5 JB |
5953 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
5954 | { | |
5955 | if (NETCONN_P (proc)) | |
e1ab4959 | 5956 | Fdelete_process (proc); |
a9f2c884 | 5957 | else if (XINT (XPROCESS (proc)->infd) >= 0) |
d0d6b7c5 JB |
5958 | process_send_signal (proc, SIGHUP, Qnil, 1); |
5959 | } | |
5960 | } | |
5961 | } | |
5962 | \f | |
3fed8ad5 GM |
5963 | /* On receipt of a signal that a child status has changed, loop asking |
5964 | about children with changed statuses until the system says there | |
5965 | are no more. | |
177c0ea7 | 5966 | |
3fed8ad5 GM |
5967 | All we do is change the status; we do not run sentinels or print |
5968 | notifications. That is saved for the next time keyboard input is | |
5969 | done, in order to avoid timing errors. | |
5970 | ||
5971 | ** WARNING: this can be called during garbage collection. | |
5972 | Therefore, it must not be fooled by the presence of mark bits in | |
5973 | Lisp objects. | |
5974 | ||
5975 | ** USG WARNING: Although it is not obvious from the documentation | |
5976 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
5977 | signal() before executing at least one wait(), otherwise the | |
5978 | handler will be called again, resulting in an infinite loop. The | |
5979 | relevant portion of the documentation reads "SIGCLD signals will be | |
5980 | queued and the signal-catching function will be continually | |
5981 | reentered until the queue is empty". Invoking signal() causes the | |
5982 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
5983 | Inc. */ | |
d0d6b7c5 JB |
5984 | |
5985 | SIGTYPE | |
5986 | sigchld_handler (signo) | |
5987 | int signo; | |
5988 | { | |
5989 | int old_errno = errno; | |
5990 | Lisp_Object proc; | |
5991 | register struct Lisp_Process *p; | |
6be429b1 | 5992 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 JB |
5993 | |
5994 | #ifdef BSD4_1 | |
5995 | extern int sigheld; | |
5996 | sigheld |= sigbit (SIGCHLD); | |
5997 | #endif | |
5998 | ||
5999 | while (1) | |
6000 | { | |
6001 | register int pid; | |
6002 | WAITTYPE w; | |
6003 | Lisp_Object tail; | |
6004 | ||
6005 | #ifdef WNOHANG | |
6006 | #ifndef WUNTRACED | |
6007 | #define WUNTRACED 0 | |
6008 | #endif /* no WUNTRACED */ | |
6009 | /* Keep trying to get a status until we get a definitive result. */ | |
177c0ea7 | 6010 | do |
d0d6b7c5 JB |
6011 | { |
6012 | errno = 0; | |
6013 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
6014 | } | |
3fed8ad5 | 6015 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6016 | |
6017 | if (pid <= 0) | |
6018 | { | |
3fed8ad5 GM |
6019 | /* PID == 0 means no processes found, PID == -1 means a real |
6020 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6021 | |
6022 | /* USG systems forget handlers when they are used; | |
6023 | must reestablish each time */ | |
3c0ee47b | 6024 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6025 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
6026 | #endif | |
6027 | #ifdef BSD4_1 | |
6028 | sigheld &= ~sigbit (SIGCHLD); | |
6029 | sigrelse (SIGCHLD); | |
6030 | #endif | |
6031 | errno = old_errno; | |
6032 | return; | |
6033 | } | |
6034 | #else | |
6035 | pid = wait (&w); | |
6036 | #endif /* no WNOHANG */ | |
6037 | ||
6038 | /* Find the process that signaled us, and record its status. */ | |
6039 | ||
6040 | p = 0; | |
3fed8ad5 | 6041 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6042 | { |
70949dac | 6043 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6044 | p = XPROCESS (proc); |
3fed8ad5 | 6045 | if (GC_EQ (p->childp, Qt) && XINT (p->pid) == pid) |
d0d6b7c5 JB |
6046 | break; |
6047 | p = 0; | |
6048 | } | |
6049 | ||
6050 | /* Look for an asynchronous process whose pid hasn't been filled | |
6051 | in yet. */ | |
6052 | if (p == 0) | |
3fed8ad5 | 6053 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6054 | { |
70949dac | 6055 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6056 | p = XPROCESS (proc); |
3fed8ad5 | 6057 | if (GC_INTEGERP (p->pid) && XINT (p->pid) == -1) |
d0d6b7c5 JB |
6058 | break; |
6059 | p = 0; | |
6060 | } | |
177c0ea7 | 6061 | |
d0d6b7c5 JB |
6062 | /* Change the status of the process that was found. */ |
6063 | if (p != 0) | |
6064 | { | |
6065 | union { int i; WAITTYPE wt; } u; | |
e98d950b | 6066 | int clear_desc_flag = 0; |
177c0ea7 | 6067 | |
d0d6b7c5 JB |
6068 | XSETINT (p->tick, ++process_tick); |
6069 | u.wt = w; | |
5fc0154c RS |
6070 | XSETINT (p->raw_status_low, u.i & 0xffff); |
6071 | XSETINT (p->raw_status_high, u.i >> 16); | |
177c0ea7 | 6072 | |
d0d6b7c5 | 6073 | /* If process has terminated, stop waiting for its output. */ |
e98d950b RS |
6074 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
6075 | && XINT (p->infd) >= 0) | |
6076 | clear_desc_flag = 1; | |
6077 | ||
6078 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6079 | if (clear_desc_flag) | |
6080 | { | |
6081 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
6082 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
6083 | } | |
6be429b1 JB |
6084 | |
6085 | /* Tell wait_reading_process_input that it needs to wake up and | |
6086 | look around. */ | |
6087 | if (input_available_clear_time) | |
6088 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6089 | } |
6090 | ||
6091 | /* There was no asynchronous process found for that id. Check | |
6092 | if we have a synchronous process. */ | |
6093 | else | |
6094 | { | |
6095 | synch_process_alive = 0; | |
6096 | ||
6097 | /* Report the status of the synchronous process. */ | |
6098 | if (WIFEXITED (w)) | |
6099 | synch_process_retcode = WRETCODE (w); | |
6100 | else if (WIFSIGNALED (w)) | |
b97ad9ea RS |
6101 | { |
6102 | int code = WTERMSIG (w); | |
68c45bf0 PE |
6103 | char *signame; |
6104 | ||
ca9c0567 | 6105 | synchronize_system_messages_locale (); |
68c45bf0 | 6106 | signame = strsignal (code); |
b97ad9ea | 6107 | |
b97ad9ea RS |
6108 | if (signame == 0) |
6109 | signame = "unknown"; | |
6110 | ||
6111 | synch_process_death = signame; | |
6112 | } | |
6be429b1 JB |
6113 | |
6114 | /* Tell wait_reading_process_input that it needs to wake up and | |
6115 | look around. */ | |
6116 | if (input_available_clear_time) | |
6117 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6118 | } |
6119 | ||
6120 | /* On some systems, we must return right away. | |
6121 | If any more processes want to signal us, we will | |
6122 | get another signal. | |
6123 | Otherwise (on systems that have WNOHANG), loop around | |
6124 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6125 | #if (defined WINDOWSNT \ |
8a2a6032 | 6126 | || (defined USG && !defined GNU_LINUX \ |
4e6277d8 | 6127 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6128 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6129 | signal (signo, sigchld_handler); |
6130 | #endif | |
6131 | errno = old_errno; | |
6132 | return; | |
6133 | #endif /* USG, but not HPUX with WNOHANG */ | |
6134 | } | |
6135 | } | |
6136 | \f | |
6137 | ||
6138 | static Lisp_Object | |
6139 | exec_sentinel_unwind (data) | |
6140 | Lisp_Object data; | |
6141 | { | |
70949dac | 6142 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6143 | return Qnil; |
6144 | } | |
6145 | ||
3b9a3dfa RS |
6146 | static Lisp_Object |
6147 | exec_sentinel_error_handler (error) | |
6148 | Lisp_Object error; | |
6149 | { | |
6150 | cmd_error_internal (error, "error in process sentinel: "); | |
6151 | Vinhibit_quit = Qt; | |
6152 | update_echo_area (); | |
833ba342 | 6153 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6154 | return Qt; |
3b9a3dfa RS |
6155 | } |
6156 | ||
d0d6b7c5 JB |
6157 | static void |
6158 | exec_sentinel (proc, reason) | |
6159 | Lisp_Object proc, reason; | |
6160 | { | |
dfc21838 | 6161 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6162 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6163 | int count = SPECPDL_INDEX (); |
4da2f5be | 6164 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6165 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6166 | |
dfc21838 RS |
6167 | /* No need to gcpro these, because all we do with them later |
6168 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6169 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6170 | XSETBUFFER (obuffer, current_buffer); |
6171 | okeymap = current_buffer->keymap; | |
6172 | ||
d0d6b7c5 JB |
6173 | sentinel = p->sentinel; |
6174 | if (NILP (sentinel)) | |
6175 | return; | |
6176 | ||
6177 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6178 | assure that it gets restored no matter how the sentinel exits. */ | |
6179 | p->sentinel = Qnil; | |
6180 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6181 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6182 | specbind (Qinhibit_quit, Qt); | |
6545aada | 6183 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 6184 | |
4da2f5be RS |
6185 | /* In case we get recursively called, |
6186 | and we already saved the match data nonrecursively, | |
6187 | save the same match data in safely recursive fashion. */ | |
6188 | if (outer_running_asynch_code) | |
6189 | { | |
6190 | Lisp_Object tem; | |
dd130227 | 6191 | tem = Fmatch_data (Qnil, Qnil); |
4da2f5be | 6192 | restore_match_data (); |
8f1ecd05 RS |
6193 | record_unwind_protect (Fset_match_data, Fmatch_data (Qnil, Qnil)); |
6194 | Fset_match_data (tem); | |
4da2f5be RS |
6195 | } |
6196 | ||
6197 | /* For speed, if a search happens within this code, | |
6198 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6199 | running_asynch_code = 1; |
4da2f5be | 6200 | |
3b9a3dfa RS |
6201 | internal_condition_case_1 (read_process_output_call, |
6202 | Fcons (sentinel, | |
6203 | Fcons (proc, Fcons (reason, Qnil))), | |
6204 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6205 | exec_sentinel_error_handler); | |
4da2f5be RS |
6206 | |
6207 | /* If we saved the match data nonrecursively, restore it now. */ | |
7074fde6 | 6208 | restore_match_data (); |
4da2f5be | 6209 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6210 | |
6211 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6212 | |
6213 | /* Restore waiting_for_user_input_p as it was | |
6214 | when we were called, in case the filter clobbered it. */ | |
6215 | waiting_for_user_input_p = waiting; | |
6216 | ||
7973cfa8 | 6217 | #if 0 |
dfc21838 RS |
6218 | if (! EQ (Fcurrent_buffer (), obuffer) |
6219 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6220 | #endif |
927e08be RS |
6221 | /* But do it only if the caller is actually going to read events. |
6222 | Otherwise there's no need to make him wake up, and it could | |
6223 | cause trouble (for example it would make Fsit_for return). */ | |
6224 | if (waiting_for_user_input_p == -1) | |
6225 | record_asynch_buffer_change (); | |
8fb3cf64 | 6226 | |
2ea6d561 | 6227 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6228 | } |
6229 | ||
6230 | /* Report all recent events of a change in process status | |
6231 | (either run the sentinel or output a message). | |
b50fe468 RS |
6232 | This is usually done while Emacs is waiting for keyboard input |
6233 | but can be done at other times. */ | |
d0d6b7c5 | 6234 | |
6b53bb85 | 6235 | void |
d0d6b7c5 JB |
6236 | status_notify () |
6237 | { | |
6238 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6239 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6240 | struct gcpro gcpro1, gcpro2; |
6241 | ||
2e4149a8 KH |
6242 | tail = Qnil; |
6243 | msg = Qnil; | |
d0d6b7c5 JB |
6244 | /* We need to gcpro tail; if read_process_output calls a filter |
6245 | which deletes a process and removes the cons to which tail points | |
6246 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6247 | reference. */ | |
6248 | GCPRO2 (tail, msg); | |
6249 | ||
30623085 RS |
6250 | /* Set this now, so that if new processes are created by sentinels |
6251 | that we run, we get called again to handle their status changes. */ | |
6252 | update_tick = process_tick; | |
6253 | ||
6254 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
d0d6b7c5 | 6255 | { |
30623085 RS |
6256 | Lisp_Object symbol; |
6257 | register struct Lisp_Process *p; | |
6258 | ||
6259 | proc = Fcdr (Fcar (tail)); | |
6260 | p = XPROCESS (proc); | |
6261 | ||
6262 | if (XINT (p->tick) != XINT (p->update_tick)) | |
d0d6b7c5 | 6263 | { |
30623085 | 6264 | XSETINT (p->update_tick, XINT (p->tick)); |
d0d6b7c5 | 6265 | |
30623085 | 6266 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6267 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6268 | && ! EQ (p->status, Qconnect) |
e690ca94 KS |
6269 | && ! EQ (p->status, Qlisten) |
6270 | && ! EQ (p->command, Qt) /* Network process not stopped. */ | |
4da2f5be RS |
6271 | && XINT (p->infd) >= 0 |
6272 | && read_process_output (proc, XINT (p->infd)) > 0); | |
d0d6b7c5 | 6273 | |
30623085 | 6274 | buffer = p->buffer; |
d0d6b7c5 | 6275 | |
30623085 RS |
6276 | /* Get the text to use for the message. */ |
6277 | if (!NILP (p->raw_status_low)) | |
6278 | update_status (p); | |
6279 | msg = status_message (p->status); | |
d0d6b7c5 | 6280 | |
30623085 RS |
6281 | /* If process is terminated, deactivate it or delete it. */ |
6282 | symbol = p->status; | |
6283 | if (CONSP (p->status)) | |
70949dac | 6284 | symbol = XCAR (p->status); |
d0d6b7c5 | 6285 | |
30623085 RS |
6286 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6287 | || EQ (symbol, Qclosed)) | |
6288 | { | |
6289 | if (delete_exited_processes) | |
6290 | remove_process (proc); | |
6291 | else | |
6292 | deactivate_process (proc); | |
6293 | } | |
d0d6b7c5 | 6294 | |
0ad61fe7 RS |
6295 | /* The actions above may have further incremented p->tick. |
6296 | So set p->update_tick again | |
6297 | so that an error in the sentinel will not cause | |
6298 | this code to be run again. */ | |
6299 | XSETINT (p->update_tick, XINT (p->tick)); | |
30623085 RS |
6300 | /* Now output the message suitably. */ |
6301 | if (!NILP (p->sentinel)) | |
6302 | exec_sentinel (proc, msg); | |
6303 | /* Don't bother with a message in the buffer | |
6304 | when a process becomes runnable. */ | |
6305 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6306 | { | |
6307 | Lisp_Object ro, tem; | |
6308 | struct buffer *old = current_buffer; | |
d8a2934e RS |
6309 | int opoint, opoint_byte; |
6310 | int before, before_byte; | |
2e4149a8 | 6311 | |
30623085 | 6312 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 6313 | |
30623085 RS |
6314 | /* Avoid error if buffer is deleted |
6315 | (probably that's why the process is dead, too) */ | |
6316 | if (NILP (XBUFFER (buffer)->name)) | |
6317 | continue; | |
6318 | Fset_buffer (buffer); | |
12ca5cdf | 6319 | |
6ec8bbd2 | 6320 | opoint = PT; |
d8a2934e | 6321 | opoint_byte = PT_BYTE; |
30623085 RS |
6322 | /* Insert new output into buffer |
6323 | at the current end-of-output marker, | |
6324 | thus preserving logical ordering of input and output. */ | |
6325 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6326 | Fgoto_char (p->mark); |
30623085 | 6327 | else |
d8a2934e | 6328 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6329 | |
6330 | before = PT; | |
d8a2934e | 6331 | before_byte = PT_BYTE; |
30623085 RS |
6332 | |
6333 | tem = current_buffer->read_only; | |
6334 | current_buffer->read_only = Qnil; | |
6335 | insert_string ("\nProcess "); | |
6336 | Finsert (1, &p->name); | |
6337 | insert_string (" "); | |
6338 | Finsert (1, &msg); | |
6339 | current_buffer->read_only = tem; | |
d8a2934e | 6340 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6341 | |
12ca5cdf | 6342 | if (opoint >= before) |
d8a2934e RS |
6343 | SET_PT_BOTH (opoint + (PT - before), |
6344 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6345 | else |
d8a2934e | 6346 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6347 | |
30623085 | 6348 | set_buffer_internal (old); |
d0d6b7c5 | 6349 | } |
30623085 RS |
6350 | } |
6351 | } /* end for */ | |
d0d6b7c5 JB |
6352 | |
6353 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
3007ebfb | 6354 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 6355 | |
d0d6b7c5 JB |
6356 | UNGCPRO; |
6357 | } | |
0fa1789e KH |
6358 | |
6359 | \f | |
6360 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6361 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6362 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6363 | DECODING will be used to decode subprocess output and ENCODING to | |
6364 | encode subprocess input. */) | |
6365 | (proc, decoding, encoding) | |
0fa1789e KH |
6366 | register Lisp_Object proc, decoding, encoding; |
6367 | { | |
6368 | register struct Lisp_Process *p; | |
6369 | ||
b7826503 | 6370 | CHECK_PROCESS (proc); |
0fa1789e KH |
6371 | p = XPROCESS (proc); |
6372 | if (XINT (p->infd) < 0) | |
d5db4077 | 6373 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
0fa1789e | 6374 | if (XINT (p->outfd) < 0) |
d5db4077 | 6375 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6376 | Fcheck_coding_system (decoding); |
6377 | Fcheck_coding_system (encoding); | |
0fa1789e | 6378 | |
03f04413 KH |
6379 | p->decode_coding_system = decoding; |
6380 | p->encode_coding_system = encoding; | |
6381 | setup_process_coding_systems (proc); | |
0fa1789e KH |
6382 | |
6383 | return Qnil; | |
6384 | } | |
6385 | ||
6386 | DEFUN ("process-coding-system", | |
6387 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 PJ |
6388 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
6389 | (proc) | |
0fa1789e KH |
6390 | register Lisp_Object proc; |
6391 | { | |
b7826503 | 6392 | CHECK_PROCESS (proc); |
0fa1789e KH |
6393 | return Fcons (XPROCESS (proc)->decode_coding_system, |
6394 | XPROCESS (proc)->encode_coding_system); | |
6395 | } | |
03f04413 KH |
6396 | |
6397 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6398 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6399 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6400 | If FLAG is non-nil, the filter is given multibyte strings. | |
6401 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6402 | all character code conversion except for end-of-line conversion is |
6403 | suppressed. */) | |
6404 | (proc, flag) | |
6405 | Lisp_Object proc, flag; | |
6406 | { | |
6407 | register struct Lisp_Process *p; | |
6408 | ||
6409 | CHECK_PROCESS (proc); | |
6410 | p = XPROCESS (proc); | |
6411 | p->filter_multibyte = flag; | |
6412 | setup_process_coding_systems (proc); | |
6413 | ||
6414 | return Qnil; | |
6415 | } | |
6416 | ||
6417 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6418 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6419 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
6420 | (proc) | |
6421 | Lisp_Object proc; | |
6422 | { | |
6423 | register struct Lisp_Process *p; | |
6424 | ||
6425 | CHECK_PROCESS (proc); | |
6426 | p = XPROCESS (proc); | |
6427 | ||
6428 | return (NILP (p->filter_multibyte) ? Qnil : Qt); | |
6429 | } | |
6430 | ||
6431 | ||
d0d6b7c5 | 6432 | \f |
a69281ff RS |
6433 | /* The first time this is called, assume keyboard input comes from DESC |
6434 | instead of from where we used to expect it. | |
6435 | Subsequent calls mean assume input keyboard can come from DESC | |
6436 | in addition to other places. */ | |
6437 | ||
6438 | static int add_keyboard_wait_descriptor_called_flag; | |
6439 | ||
6440 | void | |
6441 | add_keyboard_wait_descriptor (desc) | |
6442 | int desc; | |
6443 | { | |
6444 | if (! add_keyboard_wait_descriptor_called_flag) | |
6445 | FD_CLR (0, &input_wait_mask); | |
6446 | add_keyboard_wait_descriptor_called_flag = 1; | |
6447 | FD_SET (desc, &input_wait_mask); | |
b5dc1c83 | 6448 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
6449 | if (desc > max_keyboard_desc) |
6450 | max_keyboard_desc = desc; | |
6451 | } | |
6452 | ||
6453 | /* From now on, do not expect DESC to give keyboard input. */ | |
6454 | ||
6455 | void | |
6456 | delete_keyboard_wait_descriptor (desc) | |
6457 | int desc; | |
6458 | { | |
6459 | int fd; | |
6460 | int lim = max_keyboard_desc; | |
6461 | ||
6462 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 6463 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
6464 | |
6465 | if (desc == max_keyboard_desc) | |
6466 | for (fd = 0; fd < lim; fd++) | |
6467 | if (FD_ISSET (fd, &input_wait_mask) | |
6468 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6469 | max_keyboard_desc = fd; | |
6470 | } | |
6471 | ||
6472 | /* Return nonzero if *MASK has a bit set | |
6473 | that corresponds to one of the keyboard input descriptors. */ | |
6474 | ||
6475 | int | |
6476 | keyboard_bit_set (mask) | |
6477 | SELECT_TYPE *mask; | |
6478 | { | |
6479 | int fd; | |
6480 | ||
ee8e09af | 6481 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
6482 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6483 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6484 | return 1; | |
6485 | ||
6486 | return 0; | |
6487 | } | |
6488 | \f | |
dfcf069d | 6489 | void |
d0d6b7c5 JB |
6490 | init_process () |
6491 | { | |
6492 | register int i; | |
6493 | ||
6494 | #ifdef SIGCHLD | |
6495 | #ifndef CANNOT_DUMP | |
6496 | if (! noninteractive || initialized) | |
6497 | #endif | |
6498 | signal (SIGCHLD, sigchld_handler); | |
6499 | #endif | |
6500 | ||
6501 | FD_ZERO (&input_wait_mask); | |
a69281ff | 6502 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 6503 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 6504 | max_process_desc = 0; |
dd2281ae | 6505 | |
a69281ff | 6506 | FD_SET (0, &input_wait_mask); |
dd2281ae | 6507 | |
d0d6b7c5 JB |
6508 | Vprocess_alist = Qnil; |
6509 | for (i = 0; i < MAXDESC; i++) | |
6510 | { | |
6511 | chan_process[i] = Qnil; | |
6512 | proc_buffered_char[i] = -1; | |
6513 | } | |
c7580538 KH |
6514 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
6515 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
6516 | #ifdef DATAGRAM_SOCKETS |
6517 | bzero (datagram_address, sizeof datagram_address); | |
6518 | #endif | |
9057ff80 | 6519 | |
c2bd2c26 KS |
6520 | #ifdef HAVE_SOCKETS |
6521 | { | |
6522 | Lisp_Object subfeatures = Qnil; | |
2ccf3102 KS |
6523 | struct socket_options *sopt; |
6524 | ||
9057ff80 KS |
6525 | #define ADD_SUBFEATURE(key, val) \ |
6526 | subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures) | |
6527 | ||
9057ff80 | 6528 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 6529 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
6530 | #endif |
6531 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 6532 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 KS |
6533 | #endif |
6534 | #ifdef HAVE_LOCAL_SOCKETS | |
c2bd2c26 | 6535 | ADD_SUBFEATURE (QCfamily, Qlocal); |
9057ff80 KS |
6536 | #endif |
6537 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 6538 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 6539 | #endif |
a8e8ea61 | 6540 | #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY)) |
c2bd2c26 | 6541 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 6542 | #endif |
2ccf3102 KS |
6543 | |
6544 | for (sopt = socket_options; sopt->name; sopt++) | |
6545 | subfeatures = Fcons (intern (sopt->name), subfeatures); | |
6546 | ||
c2bd2c26 KS |
6547 | Fprovide (intern ("make-network-process"), subfeatures); |
6548 | } | |
6549 | #endif /* HAVE_SOCKETS */ | |
d0d6b7c5 | 6550 | } |
312c9964 | 6551 | |
dfcf069d | 6552 | void |
d0d6b7c5 JB |
6553 | syms_of_process () |
6554 | { | |
d0d6b7c5 JB |
6555 | Qprocessp = intern ("processp"); |
6556 | staticpro (&Qprocessp); | |
6557 | Qrun = intern ("run"); | |
6558 | staticpro (&Qrun); | |
6559 | Qstop = intern ("stop"); | |
6560 | staticpro (&Qstop); | |
6561 | Qsignal = intern ("signal"); | |
6562 | staticpro (&Qsignal); | |
6563 | ||
6564 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
6565 | here again. | |
6566 | ||
6567 | Qexit = intern ("exit"); | |
6568 | staticpro (&Qexit); */ | |
6569 | ||
6570 | Qopen = intern ("open"); | |
6571 | staticpro (&Qopen); | |
6572 | Qclosed = intern ("closed"); | |
6573 | staticpro (&Qclosed); | |
dd2a17ab KS |
6574 | Qconnect = intern ("connect"); |
6575 | staticpro (&Qconnect); | |
6576 | Qfailed = intern ("failed"); | |
6577 | staticpro (&Qfailed); | |
e690ca94 KS |
6578 | Qlisten = intern ("listen"); |
6579 | staticpro (&Qlisten); | |
6580 | Qlocal = intern ("local"); | |
6581 | staticpro (&Qlocal); | |
9057ff80 KS |
6582 | Qdatagram = intern ("datagram"); |
6583 | staticpro (&Qdatagram); | |
e690ca94 KS |
6584 | |
6585 | QCname = intern (":name"); | |
6586 | staticpro (&QCname); | |
6587 | QCbuffer = intern (":buffer"); | |
6588 | staticpro (&QCbuffer); | |
6589 | QChost = intern (":host"); | |
6590 | staticpro (&QChost); | |
6591 | QCservice = intern (":service"); | |
6592 | staticpro (&QCservice); | |
9057ff80 KS |
6593 | QCtype = intern (":type"); |
6594 | staticpro (&QCtype); | |
e690ca94 KS |
6595 | QClocal = intern (":local"); |
6596 | staticpro (&QClocal); | |
6597 | QCremote = intern (":remote"); | |
6598 | staticpro (&QCremote); | |
6599 | QCcoding = intern (":coding"); | |
6600 | staticpro (&QCcoding); | |
6601 | QCserver = intern (":server"); | |
6602 | staticpro (&QCserver); | |
e690ca94 KS |
6603 | QCnowait = intern (":nowait"); |
6604 | staticpro (&QCnowait); | |
e690ca94 KS |
6605 | QCsentinel = intern (":sentinel"); |
6606 | staticpro (&QCsentinel); | |
6607 | QClog = intern (":log"); | |
6608 | staticpro (&QClog); | |
6609 | QCnoquery = intern (":noquery"); | |
6610 | staticpro (&QCnoquery); | |
6611 | QCstop = intern (":stop"); | |
6612 | staticpro (&QCstop); | |
6613 | QCoptions = intern (":options"); | |
6614 | staticpro (&QCoptions); | |
faa7db08 KS |
6615 | QCplist = intern (":plist"); |
6616 | staticpro (&QCplist); | |
7392e23c KS |
6617 | QCfilter_multibyte = intern (":filter-multibyte"); |
6618 | staticpro (&QCfilter_multibyte); | |
177c0ea7 | 6619 | |
6545aada RS |
6620 | Qlast_nonmenu_event = intern ("last-nonmenu-event"); |
6621 | staticpro (&Qlast_nonmenu_event); | |
6622 | ||
d0d6b7c5 JB |
6623 | staticpro (&Vprocess_alist); |
6624 | ||
6625 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
fdb82f93 PJ |
6626 | doc: /* *Non-nil means delete processes immediately when they exit. |
6627 | nil means don't delete them until `list-processes' is run. */); | |
d0d6b7c5 JB |
6628 | |
6629 | delete_exited_processes = 1; | |
6630 | ||
6631 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
6632 | doc: /* Control type of device used to communicate with subprocesses. |
6633 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
6634 | The value has no effect if the system has no ptys or if all ptys are busy: | |
6635 | then a pipe is used in any case. | |
6636 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
6637 | Vprocess_connection_type = Qt; |
6638 | ||
6639 | defsubr (&Sprocessp); | |
6640 | defsubr (&Sget_process); | |
6641 | defsubr (&Sget_buffer_process); | |
6642 | defsubr (&Sdelete_process); | |
6643 | defsubr (&Sprocess_status); | |
6644 | defsubr (&Sprocess_exit_status); | |
6645 | defsubr (&Sprocess_id); | |
6646 | defsubr (&Sprocess_name); | |
3b9a3dfa | 6647 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
6648 | defsubr (&Sprocess_command); |
6649 | defsubr (&Sset_process_buffer); | |
6650 | defsubr (&Sprocess_buffer); | |
6651 | defsubr (&Sprocess_mark); | |
6652 | defsubr (&Sset_process_filter); | |
6653 | defsubr (&Sprocess_filter); | |
6654 | defsubr (&Sset_process_sentinel); | |
6655 | defsubr (&Sprocess_sentinel); | |
de282a05 | 6656 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
6657 | defsubr (&Sset_process_inherit_coding_system_flag); |
6658 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
6659 | defsubr (&Sset_process_query_on_exit_flag); |
6660 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 6661 | defsubr (&Sprocess_contact); |
faa7db08 KS |
6662 | defsubr (&Sprocess_plist); |
6663 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
6664 | defsubr (&Slist_processes); |
6665 | defsubr (&Sprocess_list); | |
6666 | defsubr (&Sstart_process); | |
6667 | #ifdef HAVE_SOCKETS | |
2ccf3102 | 6668 | defsubr (&Sset_network_process_option); |
e690ca94 | 6669 | defsubr (&Smake_network_process); |
991234f0 | 6670 | defsubr (&Sformat_network_address); |
b8c7fd71 KS |
6671 | #endif /* HAVE_SOCKETS */ |
6672 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
161933c7 KS |
6673 | #ifdef SIOCGIFCONF |
6674 | defsubr (&Snetwork_interface_list); | |
6675 | #endif | |
6676 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
2ccf3102 | 6677 | defsubr (&Snetwork_interface_info); |
161933c7 | 6678 | #endif |
b8c7fd71 | 6679 | #endif /* HAVE_SOCKETS ... */ |
e690ca94 KS |
6680 | #ifdef DATAGRAM_SOCKETS |
6681 | defsubr (&Sprocess_datagram_address); | |
6682 | defsubr (&Sset_process_datagram_address); | |
6683 | #endif | |
d0d6b7c5 JB |
6684 | defsubr (&Saccept_process_output); |
6685 | defsubr (&Sprocess_send_region); | |
6686 | defsubr (&Sprocess_send_string); | |
6687 | defsubr (&Sinterrupt_process); | |
6688 | defsubr (&Skill_process); | |
6689 | defsubr (&Squit_process); | |
6690 | defsubr (&Sstop_process); | |
6691 | defsubr (&Scontinue_process); | |
b81ea5ef | 6692 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
6693 | defsubr (&Sprocess_send_eof); |
6694 | defsubr (&Ssignal_process); | |
6695 | defsubr (&Swaiting_for_user_input_p); | |
6696 | /* defsubr (&Sprocess_connection); */ | |
0fa1789e KH |
6697 | defsubr (&Sset_process_coding_system); |
6698 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
6699 | defsubr (&Sset_process_filter_multibyte); |
6700 | defsubr (&Sprocess_filter_multibyte_p); | |
d0d6b7c5 JB |
6701 | } |
6702 | ||
6720a7fb JB |
6703 | \f |
6704 | #else /* not subprocesses */ | |
6705 | ||
6706 | #include <sys/types.h> | |
6707 | #include <errno.h> | |
6708 | ||
6709 | #include "lisp.h" | |
6710 | #include "systime.h" | |
52a1b894 EZ |
6711 | #include "charset.h" |
6712 | #include "coding.h" | |
6720a7fb | 6713 | #include "termopts.h" |
81afb6d1 | 6714 | #include "sysselect.h" |
6720a7fb | 6715 | |
ff11dfa1 | 6716 | extern int frame_garbaged; |
6720a7fb | 6717 | |
f694e5d2 KH |
6718 | extern EMACS_TIME timer_check (); |
6719 | extern int timers_run; | |
6720a7fb | 6720 | |
9057ff80 KS |
6721 | Lisp_Object QCtype; |
6722 | ||
6720a7fb JB |
6723 | /* As described above, except assuming that there are no subprocesses: |
6724 | ||
6725 | Wait for timeout to elapse and/or keyboard input to be available. | |
6726 | ||
6727 | time_limit is: | |
6728 | timeout in seconds, or | |
6729 | zero for no limit, or | |
6730 | -1 means gobble data immediately available but don't wait for any. | |
6731 | ||
f76475ad | 6732 | read_kbd is a Lisp_Object: |
6720a7fb JB |
6733 | 0 to ignore keyboard input, or |
6734 | 1 to return when input is available, or | |
6735 | -1 means caller will actually read the input, so don't throw to | |
6736 | the quit handler. | |
0a65b032 RS |
6737 | a cons cell, meaning wait until its car is non-nil |
6738 | (and gobble terminal input into the buffer if any arrives), or | |
6720a7fb JB |
6739 | We know that read_kbd will never be a Lisp_Process, since |
6740 | `subprocesses' isn't defined. | |
6741 | ||
6742 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 6743 | output that arrives. |
6720a7fb | 6744 | |
eb8c3be9 | 6745 | Return true iff we received input from any process. */ |
6720a7fb JB |
6746 | |
6747 | int | |
6748 | wait_reading_process_input (time_limit, microsecs, read_kbd, do_display) | |
f76475ad JB |
6749 | int time_limit, microsecs; |
6750 | Lisp_Object read_kbd; | |
6751 | int do_display; | |
6720a7fb | 6752 | { |
52fd88d3 | 6753 | register int nfds; |
f694e5d2 | 6754 | EMACS_TIME end_time, timeout; |
8db121c4 | 6755 | SELECT_TYPE waitchannels; |
f694e5d2 | 6756 | int xerrno; |
f3fbd155 KR |
6757 | /* Either nil or a cons cell, the car of which is of interest and |
6758 | may be changed outside of this routine. */ | |
177c0ea7 | 6759 | Lisp_Object wait_for_cell; |
454fd6b4 RS |
6760 | |
6761 | wait_for_cell = Qnil; | |
0a65b032 RS |
6762 | |
6763 | /* If waiting for non-nil in a cell, record where. */ | |
6764 | if (CONSP (read_kbd)) | |
6765 | { | |
f3fbd155 | 6766 | wait_for_cell = read_kbd; |
0a65b032 RS |
6767 | XSETFASTINT (read_kbd, 0); |
6768 | } | |
6720a7fb JB |
6769 | |
6770 | /* What does time_limit really mean? */ | |
6771 | if (time_limit || microsecs) | |
6772 | { | |
6720a7fb | 6773 | EMACS_GET_TIME (end_time); |
52fd88d3 | 6774 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
6775 | EMACS_ADD_TIME (end_time, end_time, timeout); |
6776 | } | |
6720a7fb JB |
6777 | |
6778 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 6779 | and then turn off any other atimers, |
6720a7fb | 6780 | because the select emulator uses alarms. */ |
75eb23f1 | 6781 | stop_polling (); |
30904ab7 | 6782 | turn_on_atimers (0); |
6720a7fb | 6783 | |
52fd88d3 | 6784 | while (1) |
6720a7fb | 6785 | { |
bae8d137 | 6786 | int timeout_reduced_for_timers = 0; |
6720a7fb | 6787 | |
6720a7fb JB |
6788 | /* If calling from keyboard input, do not quit |
6789 | since we want to return C-g as an input character. | |
6790 | Otherwise, do pending quit if requested. */ | |
f76475ad | 6791 | if (XINT (read_kbd) >= 0) |
6720a7fb JB |
6792 | QUIT; |
6793 | ||
0a65b032 | 6794 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6795 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
6796 | break; |
6797 | ||
bae8d137 RS |
6798 | /* Compute time from now till when time limit is up */ |
6799 | /* Exit if already run out */ | |
52fd88d3 EZ |
6800 | if (time_limit == -1) |
6801 | { | |
6802 | /* -1 specified for timeout means | |
6803 | gobble output available now | |
6804 | but don't wait at all. */ | |
6805 | ||
6806 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
6807 | } | |
6808 | else if (time_limit || microsecs) | |
6720a7fb | 6809 | { |
f694e5d2 KH |
6810 | EMACS_GET_TIME (timeout); |
6811 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
6812 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
6813 | break; |
6814 | } | |
52fd88d3 EZ |
6815 | else |
6816 | { | |
6817 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
6818 | } | |
6720a7fb | 6819 | |
bae8d137 RS |
6820 | /* If our caller will not immediately handle keyboard events, |
6821 | run timer events directly. | |
6822 | (Callers that will immediately read keyboard events | |
6823 | call timer_delay on their own.) */ | |
f3fbd155 | 6824 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6825 | { |
6826 | EMACS_TIME timer_delay; | |
0a65b032 | 6827 | |
9baacf76 | 6828 | do |
0a65b032 | 6829 | { |
9baacf76 GM |
6830 | int old_timers_run = timers_run; |
6831 | timer_delay = timer_check (1); | |
6832 | if (timers_run != old_timers_run && do_display) | |
6833 | /* We must retry, since a timer may have requeued itself | |
6834 | and that could alter the time delay. */ | |
3007ebfb | 6835 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6836 | else |
6837 | break; | |
0a65b032 | 6838 | } |
9baacf76 | 6839 | while (!detect_input_pending ()); |
0a65b032 | 6840 | |
52fd88d3 EZ |
6841 | /* If there is unread keyboard input, also return. */ |
6842 | if (XINT (read_kbd) != 0 | |
6843 | && requeued_events_pending_p ()) | |
6844 | break; | |
6845 | ||
f694e5d2 | 6846 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
6847 | { |
6848 | EMACS_TIME difference; | |
f694e5d2 | 6849 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
6850 | if (EMACS_TIME_NEG_P (difference)) |
6851 | { | |
f694e5d2 | 6852 | timeout = timer_delay; |
bae8d137 RS |
6853 | timeout_reduced_for_timers = 1; |
6854 | } | |
6855 | } | |
6856 | } | |
6857 | ||
6720a7fb JB |
6858 | /* Cause C-g and alarm signals to take immediate action, |
6859 | and cause input available signals to zero out timeout. */ | |
f76475ad | 6860 | if (XINT (read_kbd) < 0) |
6720a7fb JB |
6861 | set_waiting_for_input (&timeout); |
6862 | ||
0a65b032 RS |
6863 | /* Wait till there is something to do. */ |
6864 | ||
f3fbd155 | 6865 | if (! XINT (read_kbd) && NILP (wait_for_cell)) |
0a65b032 RS |
6866 | FD_ZERO (&waitchannels); |
6867 | else | |
6868 | FD_SET (0, &waitchannels); | |
6869 | ||
ff11dfa1 | 6870 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6871 | reprocess its display stuff. */ |
5164ee8e | 6872 | if (frame_garbaged && do_display) |
0a65b032 RS |
6873 | { |
6874 | clear_waiting_for_input (); | |
3007ebfb | 6875 | redisplay_preserve_echo_area (15); |
0a65b032 RS |
6876 | if (XINT (read_kbd) < 0) |
6877 | set_waiting_for_input (&timeout); | |
6878 | } | |
6720a7fb | 6879 | |
1861b214 RS |
6880 | if (XINT (read_kbd) && detect_input_pending ()) |
6881 | { | |
6882 | nfds = 0; | |
6883 | FD_ZERO (&waitchannels); | |
6884 | } | |
6885 | else | |
6886 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
6887 | &timeout); | |
f694e5d2 KH |
6888 | |
6889 | xerrno = errno; | |
6720a7fb JB |
6890 | |
6891 | /* Make C-g and alarm signals set flags again */ | |
6892 | clear_waiting_for_input (); | |
6893 | ||
6894 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 6895 | do_pending_window_change (0); |
6720a7fb | 6896 | |
f694e5d2 KH |
6897 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
6898 | /* We waited the full specified time, so return now. */ | |
6899 | break; | |
6900 | ||
6720a7fb JB |
6901 | if (nfds == -1) |
6902 | { | |
6903 | /* If the system call was interrupted, then go around the | |
6904 | loop again. */ | |
f694e5d2 | 6905 | if (xerrno == EINTR) |
8db121c4 | 6906 | FD_ZERO (&waitchannels); |
f694e5d2 | 6907 | else |
68c45bf0 | 6908 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb JB |
6909 | } |
6910 | #ifdef sun | |
6911 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) | |
6912 | /* System sometimes fails to deliver SIGIO. */ | |
6913 | kill (getpid (), SIGIO); | |
6914 | #endif | |
7324d660 | 6915 | #ifdef SIGIO |
f76475ad | 6916 | if (XINT (read_kbd) && interrupt_input && (waitchannels & 1)) |
e643c5be | 6917 | kill (getpid (), SIGIO); |
7324d660 | 6918 | #endif |
6720a7fb | 6919 | |
f694e5d2 KH |
6920 | /* Check for keyboard input */ |
6921 | ||
78c1afb6 EZ |
6922 | if ((XINT (read_kbd) != 0) |
6923 | && detect_input_pending_run_timers (do_display)) | |
f694e5d2 | 6924 | { |
78c1afb6 | 6925 | swallow_events (do_display); |
f694e5d2 | 6926 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 6927 | break; |
78c1afb6 EZ |
6928 | } |
6929 | ||
52fd88d3 EZ |
6930 | /* If there is unread keyboard input, also return. */ |
6931 | if (XINT (read_kbd) != 0 | |
6932 | && requeued_events_pending_p ()) | |
6933 | break; | |
6934 | ||
f854a00b RS |
6935 | /* If wait_for_cell. check for keyboard input |
6936 | but don't run any timers. | |
6937 | ??? (It seems wrong to me to check for keyboard | |
6938 | input at all when wait_for_cell, but the code | |
6939 | has been this way since July 1994. | |
6940 | Try changing this after version 19.31.) */ | |
f3fbd155 | 6941 | if (! NILP (wait_for_cell) |
f854a00b RS |
6942 | && detect_input_pending ()) |
6943 | { | |
6944 | swallow_events (do_display); | |
6945 | if (detect_input_pending ()) | |
6946 | break; | |
6947 | } | |
6948 | ||
0a65b032 | 6949 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6950 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 6951 | break; |
6720a7fb JB |
6952 | } |
6953 | ||
a87b802f JB |
6954 | start_polling (); |
6955 | ||
6720a7fb JB |
6956 | return 0; |
6957 | } | |
6958 | ||
6959 | ||
e2ba787b PJ |
6960 | /* Don't confuse make-docfile by having two doc strings for this function. |
6961 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 6962 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
6963 | 0) |
6964 | (name) | |
6720a7fb JB |
6965 | register Lisp_Object name; |
6966 | { | |
6967 | return Qnil; | |
6968 | } | |
6969 | ||
e2ba787b PJ |
6970 | /* Don't confuse make-docfile by having two doc strings for this function. |
6971 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 6972 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
6973 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
6974 | 1, 1, 0, | |
6975 | 0) | |
6976 | (process) | |
52a1b894 EZ |
6977 | register Lisp_Object process; |
6978 | { | |
6979 | /* Ignore the argument and return the value of | |
6980 | inherit-process-coding-system. */ | |
6981 | return inherit_process_coding_system ? Qt : Qnil; | |
6982 | } | |
6983 | ||
6720a7fb JB |
6984 | /* Kill all processes associated with `buffer'. |
6985 | If `buffer' is nil, kill all processes. | |
6986 | Since we have no subprocesses, this does nothing. */ | |
6987 | ||
d9bb0c32 | 6988 | void |
6720a7fb JB |
6989 | kill_buffer_processes (buffer) |
6990 | Lisp_Object buffer; | |
6991 | { | |
6992 | } | |
6993 | ||
02b9b4fd | 6994 | void |
6720a7fb JB |
6995 | init_process () |
6996 | { | |
6997 | } | |
6998 | ||
02b9b4fd | 6999 | void |
6720a7fb JB |
7000 | syms_of_process () |
7001 | { | |
9057ff80 KS |
7002 | QCtype = intern (":type"); |
7003 | staticpro (&QCtype); | |
7004 | ||
6720a7fb | 7005 | defsubr (&Sget_buffer_process); |
52a1b894 | 7006 | defsubr (&Sprocess_inherit_coding_system_flag); |
6720a7fb JB |
7007 | } |
7008 | ||
7009 | \f | |
7010 | #endif /* not subprocesses */ | |
ab5796a9 MB |
7011 | |
7012 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
7013 | (do not change this comment) */ |