Commit | Line | Data |
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d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
dd2a17ab | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95, 96, 98, 1999, |
9076a823 | 3 | 2001, 2002, 2003, 2004 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 | 128 | #include "process.h" |
428a555e | 129 | #include "frame.h" |
d0d6b7c5 JB |
130 | #include "termhooks.h" |
131 | #include "termopts.h" | |
132 | #include "commands.h" | |
3ec68006 | 133 | #include "keyboard.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 | ||
2d942bfa KS |
263 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
264 | #ifdef EMACS_HAS_USECS | |
265 | #define ADAPTIVE_READ_BUFFERING | |
266 | #endif | |
267 | #endif | |
268 | ||
269 | #ifdef ADAPTIVE_READ_BUFFERING | |
270 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
271 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
272 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
273 | ||
274 | /* Number of processes which might be delayed. */ | |
275 | ||
276 | static int process_output_delay_count; | |
277 | ||
278 | /* Non-zero if any process has non-nil process_output_skip. */ | |
279 | ||
280 | static int process_output_skip; | |
281 | ||
282 | /* Non-nil means to delay reading process output to improve buffering. | |
283 | A value of t means that delay is reset after each send, any other | |
284 | non-nil value does not reset the delay. */ | |
285 | static Lisp_Object Vprocess_adaptive_read_buffering; | |
286 | #else | |
287 | #define process_output_delay_count 0 | |
288 | #endif | |
289 | ||
e690ca94 | 290 | |
5886acf9 | 291 | #include "sysselect.h" |
d0d6b7c5 | 292 | |
41d03b9a GM |
293 | extern int keyboard_bit_set P_ ((SELECT_TYPE *)); |
294 | ||
583dcae4 | 295 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 296 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 297 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
298 | #define POLL_FOR_INPUT |
299 | #endif | |
300 | ||
a69281ff | 301 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 302 | |
dd2281ae RS |
303 | static SELECT_TYPE input_wait_mask; |
304 | ||
819b8f00 | 305 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
306 | |
307 | static SELECT_TYPE non_keyboard_wait_mask; | |
308 | ||
819b8f00 | 309 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
310 | |
311 | static SELECT_TYPE non_process_wait_mask; | |
312 | ||
dd2a17ab KS |
313 | /* Mask of bits indicating the descriptors that we wait for connect to |
314 | complete on. Once they complete, they are removed from this mask | |
315 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
316 | ||
317 | static SELECT_TYPE connect_wait_mask; | |
318 | ||
319 | /* Number of bits set in connect_wait_mask. */ | |
320 | static int num_pending_connects; | |
321 | ||
7d0e672e RS |
322 | /* The largest descriptor currently in use for a process object. */ |
323 | static int max_process_desc; | |
324 | ||
a69281ff RS |
325 | /* The largest descriptor currently in use for keyboard input. */ |
326 | static int max_keyboard_desc; | |
d0d6b7c5 | 327 | |
dd2281ae RS |
328 | /* Nonzero means delete a process right away if it exits. */ |
329 | static int delete_exited_processes; | |
d0d6b7c5 JB |
330 | |
331 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 332 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
333 | |
334 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 335 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
336 | |
337 | /* Buffered-ahead input char from process, indexed by channel. | |
338 | -1 means empty (no char is buffered). | |
339 | Used on sys V where the only way to tell if there is any | |
340 | output from the process is to read at least one char. | |
341 | Always -1 on systems that support FIONREAD. */ | |
342 | ||
e98d950b RS |
343 | /* Don't make static; need to access externally. */ |
344 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 345 | |
0fa1789e | 346 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
347 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
348 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 349 | |
e690ca94 KS |
350 | #ifdef DATAGRAM_SOCKETS |
351 | /* Table of `partner address' for datagram sockets. */ | |
352 | struct sockaddr_and_len { | |
353 | struct sockaddr *sa; | |
354 | int len; | |
355 | } datagram_address[MAXDESC]; | |
356 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
bed9664a | 357 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0) |
e690ca94 KS |
358 | #else |
359 | #define DATAGRAM_CHAN_P(chan) (0) | |
360 | #define DATAGRAM_CONN_P(proc) (0) | |
361 | #endif | |
362 | ||
dd2281ae | 363 | static Lisp_Object get_process (); |
dd2a17ab | 364 | static void exec_sentinel (); |
93b4f699 | 365 | |
fb4c3627 | 366 | extern EMACS_TIME timer_check (); |
5de50bfb | 367 | extern int timers_run; |
fb4c3627 | 368 | |
93b4f699 RS |
369 | /* Maximum number of bytes to send to a pty without an eof. */ |
370 | static int pty_max_bytes; | |
3b9a3dfa | 371 | |
14dc6093 | 372 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
a932f187 | 373 | |
875e6b94 | 374 | #ifdef HAVE_PTYS |
e62cab61 DL |
375 | #ifdef HAVE_PTY_H |
376 | #include <pty.h> | |
377 | #endif | |
875e6b94 | 378 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
379 | |
380 | static char pty_name[24]; | |
875e6b94 | 381 | #endif |
d0d6b7c5 JB |
382 | \f |
383 | /* Compute the Lisp form of the process status, p->status, from | |
384 | the numeric status that was returned by `wait'. */ | |
385 | ||
f9738840 JB |
386 | Lisp_Object status_convert (); |
387 | ||
dfcf069d | 388 | void |
d0d6b7c5 JB |
389 | update_status (p) |
390 | struct Lisp_Process *p; | |
391 | { | |
392 | union { int i; WAITTYPE wt; } u; | |
393 | u.i = XFASTINT (p->raw_status_low) + (XFASTINT (p->raw_status_high) << 16); | |
394 | p->status = status_convert (u.wt); | |
395 | p->raw_status_low = Qnil; | |
396 | p->raw_status_high = Qnil; | |
397 | } | |
398 | ||
177c0ea7 | 399 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
400 | the list that we use internally. */ |
401 | ||
402 | Lisp_Object | |
403 | status_convert (w) | |
404 | WAITTYPE w; | |
405 | { | |
406 | if (WIFSTOPPED (w)) | |
407 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
408 | else if (WIFEXITED (w)) | |
409 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
410 | WCOREDUMP (w) ? Qt : Qnil)); | |
411 | else if (WIFSIGNALED (w)) | |
412 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
413 | WCOREDUMP (w) ? Qt : Qnil)); | |
414 | else | |
415 | return Qrun; | |
416 | } | |
417 | ||
418 | /* Given a status-list, extract the three pieces of information | |
419 | and store them individually through the three pointers. */ | |
420 | ||
421 | void | |
422 | decode_status (l, symbol, code, coredump) | |
423 | Lisp_Object l; | |
424 | Lisp_Object *symbol; | |
425 | int *code; | |
426 | int *coredump; | |
427 | { | |
428 | Lisp_Object tem; | |
429 | ||
bcd69aea | 430 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
431 | { |
432 | *symbol = l; | |
433 | *code = 0; | |
434 | *coredump = 0; | |
435 | } | |
436 | else | |
437 | { | |
70949dac KR |
438 | *symbol = XCAR (l); |
439 | tem = XCDR (l); | |
440 | *code = XFASTINT (XCAR (tem)); | |
441 | tem = XCDR (tem); | |
d0d6b7c5 JB |
442 | *coredump = !NILP (tem); |
443 | } | |
444 | } | |
445 | ||
446 | /* Return a string describing a process status list. */ | |
447 | ||
177c0ea7 | 448 | Lisp_Object |
d0d6b7c5 JB |
449 | status_message (status) |
450 | Lisp_Object status; | |
451 | { | |
452 | Lisp_Object symbol; | |
453 | int code, coredump; | |
454 | Lisp_Object string, string2; | |
455 | ||
456 | decode_status (status, &symbol, &code, &coredump); | |
457 | ||
458 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
459 | { | |
68c45bf0 | 460 | char *signame; |
ca9c0567 | 461 | synchronize_system_messages_locale (); |
68c45bf0 | 462 | signame = strsignal (code); |
b97ad9ea RS |
463 | if (signame == 0) |
464 | signame = "unknown"; | |
465 | string = build_string (signame); | |
d0d6b7c5 | 466 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
a814cc69 | 467 | SSET (string, 0, DOWNCASE (SREF (string, 0))); |
d0d6b7c5 JB |
468 | return concat2 (string, string2); |
469 | } | |
470 | else if (EQ (symbol, Qexit)) | |
471 | { | |
472 | if (code == 0) | |
473 | return build_string ("finished\n"); | |
f2980264 | 474 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 475 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
476 | return concat3 (build_string ("exited abnormally with code "), |
477 | string, string2); | |
d0d6b7c5 | 478 | } |
dd2a17ab KS |
479 | else if (EQ (symbol, Qfailed)) |
480 | { | |
481 | string = Fnumber_to_string (make_number (code)); | |
482 | string2 = build_string ("\n"); | |
e690ca94 KS |
483 | return concat3 (build_string ("failed with code "), |
484 | string, string2); | |
dd2a17ab | 485 | } |
d0d6b7c5 JB |
486 | else |
487 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
488 | } | |
489 | \f | |
490 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 491 | |
875e6b94 KH |
492 | /* Open an available pty, returning a file descriptor. |
493 | Return -1 on failure. | |
494 | The file name of the terminal corresponding to the pty | |
495 | is left in the variable pty_name. */ | |
496 | ||
d0d6b7c5 JB |
497 | int |
498 | allocate_pty () | |
499 | { | |
dfcf069d | 500 | register int c, i; |
d0d6b7c5 JB |
501 | int fd; |
502 | ||
503 | #ifdef PTY_ITERATION | |
504 | PTY_ITERATION | |
505 | #else | |
506 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
507 | for (i = 0; i < 16; i++) | |
508 | #endif | |
509 | { | |
26d7389d | 510 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
511 | #ifdef PTY_NAME_SPRINTF |
512 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
513 | #else |
514 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
515 | #endif /* no PTY_NAME_SPRINTF */ |
516 | ||
4d7c105e RS |
517 | #ifdef PTY_OPEN |
518 | PTY_OPEN; | |
519 | #else /* no PTY_OPEN */ | |
34967d0f | 520 | { |
34967d0f SM |
521 | # ifdef IRIS |
522 | /* Unusual IRIS code */ | |
523 | *ptyv = emacs_open ("/dev/ptc", O_RDWR | O_NDELAY, 0); | |
524 | if (fd < 0) | |
525 | return -1; | |
526 | if (fstat (fd, &stb) < 0) | |
527 | return -1; | |
528 | # else /* not IRIS */ | |
529 | { /* Some systems name their pseudoterminals so that there are gaps in | |
530 | the usual sequence - for example, on HP9000/S700 systems, there | |
531 | are no pseudoterminals with names ending in 'f'. So we wait for | |
532 | three failures in a row before deciding that we've reached the | |
533 | end of the ptys. */ | |
534 | int failed_count = 0; | |
535 | ||
536 | if (stat (pty_name, &stb) < 0) | |
537 | { | |
538 | failed_count++; | |
539 | if (failed_count >= 3) | |
540 | return -1; | |
541 | } | |
542 | else | |
543 | failed_count = 0; | |
32676c08 | 544 | } |
34967d0f SM |
545 | # ifdef O_NONBLOCK |
546 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
547 | # else | |
548 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
549 | # endif | |
550 | # endif /* not IRIS */ | |
551 | } | |
4d7c105e | 552 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
553 | |
554 | if (fd >= 0) | |
555 | { | |
556 | /* check to make certain that both sides are available | |
557 | this avoids a nasty yet stupid bug in rlogins */ | |
558 | #ifdef PTY_TTY_NAME_SPRINTF | |
559 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 JB |
560 | #else |
561 | sprintf (pty_name, "/dev/tty%c%x", c, i); | |
d0d6b7c5 JB |
562 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
563 | #ifndef UNIPLUS | |
564 | if (access (pty_name, 6) != 0) | |
565 | { | |
68c45bf0 | 566 | emacs_close (fd); |
34967d0f | 567 | # if !defined(IRIS) && !defined(__sgi) |
d0d6b7c5 | 568 | continue; |
34967d0f | 569 | # else |
d0d6b7c5 | 570 | return -1; |
34967d0f | 571 | # endif /* IRIS */ |
d0d6b7c5 JB |
572 | } |
573 | #endif /* not UNIPLUS */ | |
574 | setup_pty (fd); | |
575 | return fd; | |
576 | } | |
577 | } | |
578 | return -1; | |
579 | } | |
580 | #endif /* HAVE_PTYS */ | |
581 | \f | |
582 | Lisp_Object | |
583 | make_process (name) | |
584 | Lisp_Object name; | |
585 | { | |
586 | register Lisp_Object val, tem, name1; | |
587 | register struct Lisp_Process *p; | |
588 | char suffix[10]; | |
589 | register int i; | |
590 | ||
98423852 | 591 | p = allocate_process (); |
23d6bb9c | 592 | |
1d056e64 KH |
593 | XSETINT (p->infd, -1); |
594 | XSETINT (p->outfd, -1); | |
22719df2 KH |
595 | XSETFASTINT (p->pid, 0); |
596 | XSETFASTINT (p->tick, 0); | |
597 | XSETFASTINT (p->update_tick, 0); | |
d0d6b7c5 JB |
598 | p->raw_status_low = Qnil; |
599 | p->raw_status_high = Qnil; | |
600 | p->status = Qrun; | |
601 | p->mark = Fmake_marker (); | |
602 | ||
2d942bfa KS |
603 | #ifdef ADAPTIVE_READ_BUFFERING |
604 | p->adaptive_read_buffering = Qnil; | |
605 | XSETFASTINT (p->read_output_delay, 0); | |
606 | p->read_output_skip = Qnil; | |
607 | #endif | |
608 | ||
d0d6b7c5 JB |
609 | /* If name is already in use, modify it until it is unused. */ |
610 | ||
611 | name1 = name; | |
612 | for (i = 1; ; i++) | |
613 | { | |
614 | tem = Fget_process (name1); | |
615 | if (NILP (tem)) break; | |
616 | sprintf (suffix, "<%d>", i); | |
617 | name1 = concat2 (name, build_string (suffix)); | |
618 | } | |
619 | name = name1; | |
620 | p->name = name; | |
23d6bb9c | 621 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
622 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
623 | return val; | |
624 | } | |
625 | ||
dfcf069d | 626 | void |
d0d6b7c5 JB |
627 | remove_process (proc) |
628 | register Lisp_Object proc; | |
629 | { | |
630 | register Lisp_Object pair; | |
631 | ||
632 | pair = Frassq (proc, Vprocess_alist); | |
633 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
634 | |
635 | deactivate_process (proc); | |
636 | } | |
03f04413 KH |
637 | |
638 | /* Setup coding systems of PROCESS. */ | |
639 | ||
640 | void | |
641 | setup_process_coding_systems (process) | |
642 | Lisp_Object process; | |
643 | { | |
644 | struct Lisp_Process *p = XPROCESS (process); | |
645 | int inch = XINT (p->infd); | |
646 | int outch = XINT (p->outfd); | |
647 | ||
20f1ef2e KH |
648 | if (inch < 0 || outch < 0) |
649 | return; | |
650 | ||
03f04413 KH |
651 | if (!proc_decode_coding_system[inch]) |
652 | proc_decode_coding_system[inch] | |
653 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
654 | setup_coding_system (p->decode_coding_system, | |
655 | proc_decode_coding_system[inch]); | |
656 | if (! NILP (p->filter)) | |
657 | { | |
658 | if (NILP (p->filter_multibyte)) | |
659 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
660 | } | |
661 | else if (BUFFERP (p->buffer)) | |
662 | { | |
663 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
664 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
665 | } | |
666 | ||
667 | if (!proc_encode_coding_system[outch]) | |
668 | proc_encode_coding_system[outch] | |
669 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
670 | setup_coding_system (p->encode_coding_system, | |
671 | proc_encode_coding_system[outch]); | |
672 | } | |
d0d6b7c5 JB |
673 | \f |
674 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
675 | doc: /* Return t if OBJECT is a process. */) |
676 | (object) | |
4ee3e309 | 677 | Lisp_Object object; |
d0d6b7c5 | 678 | { |
4ee3e309 | 679 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
680 | } |
681 | ||
682 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
683 | doc: /* Return the process named NAME, or nil if there is none. */) |
684 | (name) | |
d0d6b7c5 JB |
685 | register Lisp_Object name; |
686 | { | |
bcd69aea | 687 | if (PROCESSP (name)) |
d0d6b7c5 | 688 | return name; |
b7826503 | 689 | CHECK_STRING (name); |
d0d6b7c5 JB |
690 | return Fcdr (Fassoc (name, Vprocess_alist)); |
691 | } | |
692 | ||
693 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
694 | doc: /* Return the (or a) process associated with BUFFER. |
695 | BUFFER may be a buffer or the name of one. */) | |
696 | (buffer) | |
4ee3e309 | 697 | register Lisp_Object buffer; |
d0d6b7c5 JB |
698 | { |
699 | register Lisp_Object buf, tail, proc; | |
700 | ||
4ee3e309 EN |
701 | if (NILP (buffer)) return Qnil; |
702 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
703 | if (NILP (buf)) return Qnil; |
704 | ||
705 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
706 | { | |
707 | proc = Fcdr (Fcar (tail)); | |
bcd69aea | 708 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
709 | return proc; |
710 | } | |
711 | return Qnil; | |
712 | } | |
713 | ||
ebb9e16f JB |
714 | /* This is how commands for the user decode process arguments. It |
715 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
716 | Buffers denote the first process in the buffer, and nil denotes the | |
717 | current buffer. */ | |
d0d6b7c5 | 718 | |
77b221b1 | 719 | static Lisp_Object |
d0d6b7c5 JB |
720 | get_process (name) |
721 | register Lisp_Object name; | |
722 | { | |
1619761d KH |
723 | register Lisp_Object proc, obj; |
724 | if (STRINGP (name)) | |
725 | { | |
726 | obj = Fget_process (name); | |
727 | if (NILP (obj)) | |
728 | obj = Fget_buffer (name); | |
729 | if (NILP (obj)) | |
d5db4077 | 730 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
731 | } |
732 | else if (NILP (name)) | |
733 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 734 | else |
1619761d KH |
735 | obj = name; |
736 | ||
737 | /* Now obj should be either a buffer object or a process object. | |
738 | */ | |
739 | if (BUFFERP (obj)) | |
d0d6b7c5 | 740 | { |
1619761d | 741 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 742 | if (NILP (proc)) |
d5db4077 | 743 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 744 | } |
d0d6b7c5 | 745 | else |
1619761d | 746 | { |
b7826503 | 747 | CHECK_PROCESS (obj); |
1619761d KH |
748 | proc = obj; |
749 | } | |
750 | return proc; | |
d0d6b7c5 JB |
751 | } |
752 | ||
753 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, | |
fdb82f93 PJ |
754 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
755 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
756 | nil, indicating the current buffer's process. */) | |
757 | (process) | |
4ee3e309 | 758 | register Lisp_Object process; |
d0d6b7c5 | 759 | { |
4ee3e309 EN |
760 | process = get_process (process); |
761 | XPROCESS (process)->raw_status_low = Qnil; | |
762 | XPROCESS (process)->raw_status_high = Qnil; | |
763 | if (NETCONN_P (process)) | |
d0d6b7c5 | 764 | { |
4ee3e309 EN |
765 | XPROCESS (process)->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
766 | XSETINT (XPROCESS (process)->tick, ++process_tick); | |
d0d6b7c5 | 767 | } |
4ee3e309 | 768 | else if (XINT (XPROCESS (process)->infd) >= 0) |
d0d6b7c5 | 769 | { |
4ee3e309 | 770 | Fkill_process (process, Qnil); |
d0d6b7c5 | 771 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ |
177c0ea7 | 772 | XPROCESS (process)->status |
d0d6b7c5 | 773 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); |
4ee3e309 | 774 | XSETINT (XPROCESS (process)->tick, ++process_tick); |
d0d6b7c5 JB |
775 | status_notify (); |
776 | } | |
4ee3e309 | 777 | remove_process (process); |
d0d6b7c5 JB |
778 | return Qnil; |
779 | } | |
780 | \f | |
781 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
782 | doc: /* Return the status of PROCESS. |
783 | The returned value is one of the following symbols: | |
784 | run -- for a process that is running. | |
785 | stop -- for a process stopped but continuable. | |
786 | exit -- for a process that has exited. | |
787 | signal -- for a process that has got a fatal signal. | |
788 | open -- for a network stream connection that is open. | |
e690ca94 | 789 | listen -- for a network stream server that is listening. |
fdb82f93 | 790 | closed -- for a network stream connection that is closed. |
e4984112 KS |
791 | connect -- when waiting for a non-blocking connection to complete. |
792 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
793 | nil -- if arg is a process name and no such process exists. |
794 | PROCESS may be a process, a buffer, the name of a process, or | |
795 | nil, indicating the current buffer's process. */) | |
796 | (process) | |
4ee3e309 | 797 | register Lisp_Object process; |
d0d6b7c5 JB |
798 | { |
799 | register struct Lisp_Process *p; | |
800 | register Lisp_Object status; | |
343f4114 | 801 | |
4ee3e309 EN |
802 | if (STRINGP (process)) |
803 | process = Fget_process (process); | |
343f4114 | 804 | else |
4ee3e309 | 805 | process = get_process (process); |
343f4114 | 806 | |
4ee3e309 EN |
807 | if (NILP (process)) |
808 | return process; | |
343f4114 | 809 | |
4ee3e309 | 810 | p = XPROCESS (process); |
d0d6b7c5 JB |
811 | if (!NILP (p->raw_status_low)) |
812 | update_status (p); | |
813 | status = p->status; | |
bcd69aea | 814 | if (CONSP (status)) |
70949dac | 815 | status = XCAR (status); |
e690ca94 | 816 | if (NETCONN1_P (p)) |
d0d6b7c5 | 817 | { |
e690ca94 | 818 | if (EQ (status, Qexit)) |
d0d6b7c5 | 819 | status = Qclosed; |
e690ca94 KS |
820 | else if (EQ (p->command, Qt)) |
821 | status = Qstop; | |
822 | else if (EQ (status, Qrun)) | |
823 | status = Qopen; | |
d0d6b7c5 JB |
824 | } |
825 | return status; | |
826 | } | |
827 | ||
828 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
829 | 1, 1, 0, | |
fdb82f93 PJ |
830 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
831 | If PROCESS has not yet exited or died, return 0. */) | |
832 | (process) | |
4ee3e309 | 833 | register Lisp_Object process; |
d0d6b7c5 | 834 | { |
b7826503 | 835 | CHECK_PROCESS (process); |
4ee3e309 EN |
836 | if (!NILP (XPROCESS (process)->raw_status_low)) |
837 | update_status (XPROCESS (process)); | |
838 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 839 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
840 | return make_number (0); |
841 | } | |
842 | ||
843 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 PJ |
844 | doc: /* Return the process id of PROCESS. |
845 | This is the pid of the Unix process which PROCESS uses or talks to. | |
846 | For a network connection, this value is nil. */) | |
847 | (process) | |
4ee3e309 | 848 | register Lisp_Object process; |
d0d6b7c5 | 849 | { |
b7826503 | 850 | CHECK_PROCESS (process); |
4ee3e309 | 851 | return XPROCESS (process)->pid; |
d0d6b7c5 JB |
852 | } |
853 | ||
854 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
855 | doc: /* Return the name of PROCESS, as a string. |
856 | This is the name of the program invoked in PROCESS, | |
857 | possibly modified to make it unique among process names. */) | |
858 | (process) | |
4ee3e309 | 859 | register Lisp_Object process; |
d0d6b7c5 | 860 | { |
b7826503 | 861 | CHECK_PROCESS (process); |
4ee3e309 | 862 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
863 | } |
864 | ||
865 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
866 | doc: /* Return the command that was executed to start PROCESS. |
867 | This is a list of strings, the first string being the program executed | |
868 | and the rest of the strings being the arguments given to it. | |
869 | For a non-child channel, this is nil. */) | |
870 | (process) | |
4ee3e309 | 871 | register Lisp_Object process; |
d0d6b7c5 | 872 | { |
b7826503 | 873 | CHECK_PROCESS (process); |
4ee3e309 | 874 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
875 | } |
876 | ||
3b9a3dfa | 877 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
878 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
879 | This is the terminal that the process itself reads and writes on, | |
880 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
881 | (process) | |
4ee3e309 | 882 | register Lisp_Object process; |
3b9a3dfa | 883 | { |
b7826503 | 884 | CHECK_PROCESS (process); |
4ee3e309 | 885 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
886 | } |
887 | ||
d0d6b7c5 | 888 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
889 | 2, 2, 0, |
890 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
891 | (process, buffer) | |
4ee3e309 | 892 | register Lisp_Object process, buffer; |
d0d6b7c5 | 893 | { |
e690ca94 KS |
894 | struct Lisp_Process *p; |
895 | ||
b7826503 | 896 | CHECK_PROCESS (process); |
d0d6b7c5 | 897 | if (!NILP (buffer)) |
b7826503 | 898 | CHECK_BUFFER (buffer); |
e690ca94 KS |
899 | p = XPROCESS (process); |
900 | p->buffer = buffer; | |
901 | if (NETCONN1_P (p)) | |
902 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); | |
03f04413 | 903 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
904 | return buffer; |
905 | } | |
906 | ||
907 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
908 | 1, 1, 0, |
909 | doc: /* Return the buffer PROCESS is associated with. | |
910 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
911 | (process) | |
4ee3e309 | 912 | register Lisp_Object process; |
d0d6b7c5 | 913 | { |
b7826503 | 914 | CHECK_PROCESS (process); |
4ee3e309 | 915 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
916 | } |
917 | ||
918 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
919 | 1, 1, 0, |
920 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
921 | (process) | |
4ee3e309 | 922 | register Lisp_Object process; |
d0d6b7c5 | 923 | { |
b7826503 | 924 | CHECK_PROCESS (process); |
4ee3e309 | 925 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
926 | } |
927 | ||
928 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
929 | 2, 2, 0, |
930 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
931 | t means stop accepting output from the process. | |
3452df9e KS |
932 | |
933 | When a process has a filter, its buffer is not used for output. | |
934 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 935 | passed to the filter. |
3452df9e | 936 | |
fdb82f93 | 937 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
938 | The string argument is normally a multibyte string, except: |
939 | - if the process' input coding system is no-conversion or raw-text, | |
940 | it is a unibyte string (the non-converted input), or else | |
941 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
942 | string (the result of converting the decoded input multibyte | |
943 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 944 | (process, filter) |
4ee3e309 | 945 | register Lisp_Object process, filter; |
d0d6b7c5 | 946 | { |
471f86b9 | 947 | struct Lisp_Process *p; |
177c0ea7 | 948 | |
b7826503 | 949 | CHECK_PROCESS (process); |
471f86b9 GM |
950 | p = XPROCESS (process); |
951 | ||
952 | /* Don't signal an error if the process' input file descriptor | |
953 | is closed. This could make debugging Lisp more difficult, | |
954 | for example when doing something like | |
955 | ||
956 | (setq process (start-process ...)) | |
957 | (debug) | |
958 | (set-process-filter process ...) */ | |
177c0ea7 | 959 | |
471f86b9 | 960 | if (XINT (p->infd) >= 0) |
a69281ff | 961 | { |
e690ca94 | 962 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 GM |
963 | { |
964 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
965 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
966 | } | |
e690ca94 KS |
967 | else if (EQ (p->filter, Qt) |
968 | && !EQ (p->command, Qt)) /* Network process not stopped. */ | |
471f86b9 GM |
969 | { |
970 | FD_SET (XINT (p->infd), &input_wait_mask); | |
971 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
972 | } | |
a69281ff | 973 | } |
177c0ea7 | 974 | |
471f86b9 | 975 | p->filter = filter; |
e690ca94 KS |
976 | if (NETCONN1_P (p)) |
977 | p->childp = Fplist_put (p->childp, QCfilter, filter); | |
03f04413 | 978 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
979 | return filter; |
980 | } | |
981 | ||
982 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
983 | 1, 1, 0, |
984 | doc: /* Returns the filter function of PROCESS; nil if none. | |
985 | See `set-process-filter' for more info on filter functions. */) | |
986 | (process) | |
4ee3e309 | 987 | register Lisp_Object process; |
d0d6b7c5 | 988 | { |
b7826503 | 989 | CHECK_PROCESS (process); |
4ee3e309 | 990 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
991 | } |
992 | ||
993 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
994 | 2, 2, 0, |
995 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
996 | The sentinel is called as a function when the process changes state. | |
997 | It gets two arguments: the process, and a string describing the change. */) | |
998 | (process, sentinel) | |
4ee3e309 | 999 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 1000 | { |
2ccf3102 KS |
1001 | struct Lisp_Process *p; |
1002 | ||
b7826503 | 1003 | CHECK_PROCESS (process); |
2ccf3102 KS |
1004 | p = XPROCESS (process); |
1005 | ||
1006 | p->sentinel = sentinel; | |
1007 | if (NETCONN1_P (p)) | |
1008 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); | |
d0d6b7c5 JB |
1009 | return sentinel; |
1010 | } | |
1011 | ||
1012 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1013 | 1, 1, 0, |
1014 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1015 | See `set-process-sentinel' for more info on sentinels. */) | |
1016 | (process) | |
4ee3e309 | 1017 | register Lisp_Object process; |
d0d6b7c5 | 1018 | { |
b7826503 | 1019 | CHECK_PROCESS (process); |
4ee3e309 | 1020 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1021 | } |
1022 | ||
396df322 | 1023 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1024 | Sset_process_window_size, 3, 3, 0, |
1025 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
1026 | (process, height, width) | |
4ee3e309 | 1027 | register Lisp_Object process, height, width; |
396df322 | 1028 | { |
b7826503 PJ |
1029 | CHECK_PROCESS (process); |
1030 | CHECK_NATNUM (height); | |
1031 | CHECK_NATNUM (width); | |
177c0ea7 | 1032 | |
989521fd | 1033 | if (XINT (XPROCESS (process)->infd) < 0 |
471f86b9 GM |
1034 | || set_window_size (XINT (XPROCESS (process)->infd), |
1035 | XINT (height), XINT (width)) <= 0) | |
396df322 RS |
1036 | return Qnil; |
1037 | else | |
1038 | return Qt; | |
1039 | } | |
1040 | ||
52a1b894 | 1041 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1042 | Fset_process_inherit_coding_system_flag, |
1043 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1044 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1045 | If the second argument FLAG is non-nil, then the variable | |
1046 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1047 | will be bound to the value of the coding system used to decode | |
1048 | the process output. | |
1049 | ||
1050 | This is useful when the coding system specified for the process buffer | |
1051 | leaves either the character code conversion or the end-of-line conversion | |
1052 | unspecified, or if the coding system used to decode the process output | |
1053 | is more appropriate for saving the process buffer. | |
1054 | ||
1055 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1056 | starting the process is an alternative way of setting the inherit flag | |
1057 | for the process which will run. */) | |
1058 | (process, flag) | |
52a1b894 EZ |
1059 | register Lisp_Object process, flag; |
1060 | { | |
b7826503 | 1061 | CHECK_PROCESS (process); |
aa91317a | 1062 | XPROCESS (process)->inherit_coding_system_flag = flag; |
52a1b894 EZ |
1063 | return flag; |
1064 | } | |
1065 | ||
1066 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1067 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1068 | 1, 1, 0, | |
1069 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1070 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1071 | associated with PROCESS will inherit the coding system used to decode | |
1072 | the process output. */) | |
1073 | (process) | |
52a1b894 EZ |
1074 | register Lisp_Object process; |
1075 | { | |
b7826503 | 1076 | CHECK_PROCESS (process); |
aa91317a | 1077 | return XPROCESS (process)->inherit_coding_system_flag; |
52a1b894 EZ |
1078 | } |
1079 | ||
e690ca94 KS |
1080 | DEFUN ("set-process-query-on-exit-flag", |
1081 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1082 | 2, 2, 0, | |
1083 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
1084 | If the second argument FLAG is non-nil, emacs will query the user before | |
1085 | exiting if PROCESS is running. */) | |
1086 | (process, flag) | |
1087 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1088 | { |
b7826503 | 1089 | CHECK_PROCESS (process); |
e690ca94 KS |
1090 | XPROCESS (process)->kill_without_query = Fnull (flag); |
1091 | return flag; | |
d0d6b7c5 | 1092 | } |
312c9964 | 1093 | |
e690ca94 KS |
1094 | DEFUN ("process-query-on-exit-flag", |
1095 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1096 | 1, 1, 0, |
e690ca94 | 1097 | doc: /* Return the current value of query on exit flag for PROCESS. */) |
fdb82f93 | 1098 | (process) |
de282a05 RS |
1099 | register Lisp_Object process; |
1100 | { | |
b7826503 | 1101 | CHECK_PROCESS (process); |
e690ca94 KS |
1102 | return Fnull (XPROCESS (process)->kill_without_query); |
1103 | } | |
1104 | ||
1105 | #ifdef DATAGRAM_SOCKETS | |
1106 | Lisp_Object Fprocess_datagram_address (); | |
1107 | #endif | |
1108 | ||
1109 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1110 | 1, 2, 0, | |
1111 | doc: /* Return the contact info of PROCESS; t for a real child. | |
1112 | For a net connection, the value depends on the optional KEY arg. | |
1113 | If KEY is nil, value is a cons cell of the form (HOST SERVICE), | |
1114 | if KEY is t, the complete contact information for the connection is | |
1115 | returned, else the specific value for the keyword KEY is returned. | |
1116 | See `make-network-process' for a list of keywords. */) | |
1117 | (process, key) | |
1118 | register Lisp_Object process, key; | |
1119 | { | |
1120 | Lisp_Object contact; | |
1121 | ||
1122 | CHECK_PROCESS (process); | |
1123 | contact = XPROCESS (process)->childp; | |
1124 | ||
1125 | #ifdef DATAGRAM_SOCKETS | |
1126 | if (DATAGRAM_CONN_P (process) | |
1127 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1128 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1129 | Fprocess_datagram_address (process)); |
1130 | #endif | |
1131 | ||
1132 | if (!NETCONN_P (process) || EQ (key, Qt)) | |
1133 | return contact; | |
1134 | if (NILP (key)) | |
1135 | return Fcons (Fplist_get (contact, QChost), | |
1136 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
1137 | return Fplist_get (contact, key); | |
de282a05 RS |
1138 | } |
1139 | ||
faa7db08 KS |
1140 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1141 | 1, 1, 0, | |
1142 | doc: /* Return the plist of PROCESS. */) | |
1143 | (process) | |
1144 | register Lisp_Object process; | |
365aee82 | 1145 | { |
ac4a7584 | 1146 | CHECK_PROCESS (process); |
faa7db08 | 1147 | return XPROCESS (process)->plist; |
ac4a7584 | 1148 | } |
365aee82 | 1149 | |
faa7db08 KS |
1150 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1151 | 2, 2, 0, | |
26a086c6 | 1152 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1153 | (process, plist) |
1154 | register Lisp_Object process, plist; | |
ac4a7584 | 1155 | { |
365aee82 | 1156 | CHECK_PROCESS (process); |
faa7db08 | 1157 | CHECK_LIST (plist); |
365aee82 | 1158 | |
faa7db08 | 1159 | XPROCESS (process)->plist = plist; |
26a086c6 | 1160 | return plist; |
365aee82 KS |
1161 | } |
1162 | ||
312c9964 RS |
1163 | #if 0 /* Turned off because we don't currently record this info |
1164 | in the process. Perhaps add it. */ | |
1165 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1166 | doc: /* Return the connection type of PROCESS. |
1167 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1168 | a socket connection. */) | |
1169 | (process) | |
312c9964 RS |
1170 | Lisp_Object process; |
1171 | { | |
1172 | return XPROCESS (process)->type; | |
1173 | } | |
1174 | #endif | |
991234f0 KS |
1175 | |
1176 | #ifdef HAVE_SOCKETS | |
1177 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1178 | 1, 2, 0, |
991234f0 | 1179 | doc: /* Convert network ADDRESS from internal format to a string. |
0dccee41 KS |
1180 | If optional second argument OMIT-PORT is non-nil, don't include a port |
1181 | number in the string; in this case, interpret a 4 element vector as an | |
1182 | IP address. Returns nil if format of ADDRESS is invalid. */) | |
1183 | (address, omit_port) | |
1184 | Lisp_Object address, omit_port; | |
991234f0 | 1185 | { |
991234f0 KS |
1186 | if (NILP (address)) |
1187 | return Qnil; | |
1188 | ||
1189 | if (STRINGP (address)) /* AF_LOCAL */ | |
1190 | return address; | |
1191 | ||
1192 | if (VECTORP (address)) /* AF_INET */ | |
1193 | { | |
1194 | register struct Lisp_Vector *p = XVECTOR (address); | |
1195 | Lisp_Object args[6]; | |
0dccee41 | 1196 | int nargs, i; |
991234f0 | 1197 | |
0dccee41 KS |
1198 | if (!NILP (omit_port) && (p->size == 4 || p->size == 5)) |
1199 | { | |
1200 | args[0] = build_string ("%d.%d.%d.%d"); | |
1201 | nargs = 4; | |
1202 | } | |
1203 | else if (p->size == 5) | |
1204 | { | |
1205 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1206 | nargs = 5; | |
1207 | } | |
1208 | else | |
991234f0 KS |
1209 | return Qnil; |
1210 | ||
0dccee41 KS |
1211 | for (i = 0; i < nargs; i++) |
1212 | args[i+1] = p->contents[i]; | |
1213 | return Fformat (nargs+1, args); | |
991234f0 KS |
1214 | } |
1215 | ||
1216 | if (CONSP (address)) | |
1217 | { | |
1218 | Lisp_Object args[2]; | |
1219 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1220 | args[1] = Fcar (address); |
991234f0 | 1221 | return Fformat (2, args); |
177c0ea7 | 1222 | |
991234f0 KS |
1223 | } |
1224 | ||
1225 | return Qnil; | |
1226 | } | |
1227 | #endif | |
d0d6b7c5 JB |
1228 | \f |
1229 | Lisp_Object | |
e690ca94 KS |
1230 | list_processes_1 (query_only) |
1231 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1232 | { |
1233 | register Lisp_Object tail, tem; | |
1234 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1235 | register struct Lisp_Process *p; |
e690ca94 KS |
1236 | char tembuf[300]; |
1237 | int w_proc, w_buffer, w_tty; | |
1238 | Lisp_Object i_status, i_buffer, i_tty, i_command; | |
1239 | ||
1240 | w_proc = 4; /* Proc */ | |
1241 | w_buffer = 6; /* Buffer */ | |
1242 | w_tty = 0; /* Omit if no ttys */ | |
1243 | ||
1244 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1245 | { | |
1246 | int i; | |
1247 | ||
1248 | proc = Fcdr (Fcar (tail)); | |
1249 | p = XPROCESS (proc); | |
1250 | if (NILP (p->childp)) | |
1251 | continue; | |
1252 | if (!NILP (query_only) && !NILP (p->kill_without_query)) | |
1253 | continue; | |
1254 | if (STRINGP (p->name) | |
d5db4077 | 1255 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1256 | w_proc = i; |
1257 | if (!NILP (p->buffer)) | |
1258 | { | |
1259 | if (NILP (XBUFFER (p->buffer)->name) && w_buffer < 8) | |
1260 | w_buffer = 8; /* (Killed) */ | |
d5db4077 | 1261 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1262 | w_buffer = i; |
1263 | } | |
1264 | if (STRINGP (p->tty_name) | |
d5db4077 | 1265 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1266 | w_tty = i; |
1267 | } | |
1268 | ||
1269 | XSETFASTINT (i_status, w_proc + 1); | |
1270 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1271 | if (w_tty) | |
1272 | { | |
1273 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
1274 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_tty + 1); | |
1275 | } else { | |
1276 | i_tty = Qnil; | |
1277 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1278 | } | |
d0d6b7c5 | 1279 | |
22719df2 | 1280 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1281 | |
1282 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
1283 | Fbuffer_disable_undo (Vstandard_output); | |
1284 | ||
1285 | current_buffer->truncate_lines = Qt; | |
1286 | ||
e690ca94 KS |
1287 | write_string ("Proc", -1); |
1288 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1289 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1290 | if (!NILP (i_tty)) | |
1291 | { | |
1292 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1293 | } | |
1294 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1295 | write_string ("\n", -1); | |
1296 | ||
1297 | write_string ("----", -1); | |
1298 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1299 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1300 | if (!NILP (i_tty)) | |
1301 | { | |
1302 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1303 | } | |
1304 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1305 | write_string ("\n", -1); | |
d0d6b7c5 JB |
1306 | |
1307 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1308 | { | |
1309 | Lisp_Object symbol; | |
1310 | ||
1311 | proc = Fcdr (Fcar (tail)); | |
1312 | p = XPROCESS (proc); | |
1313 | if (NILP (p->childp)) | |
1314 | continue; | |
e690ca94 KS |
1315 | if (!NILP (query_only) && !NILP (p->kill_without_query)) |
1316 | continue; | |
d0d6b7c5 JB |
1317 | |
1318 | Finsert (1, &p->name); | |
e690ca94 | 1319 | Findent_to (i_status, minspace); |
d0d6b7c5 JB |
1320 | |
1321 | if (!NILP (p->raw_status_low)) | |
1322 | update_status (p); | |
1323 | symbol = p->status; | |
bcd69aea | 1324 | if (CONSP (p->status)) |
70949dac | 1325 | symbol = XCAR (p->status); |
d0d6b7c5 | 1326 | |
177c0ea7 | 1327 | |
d0d6b7c5 JB |
1328 | if (EQ (symbol, Qsignal)) |
1329 | { | |
1330 | Lisp_Object tem; | |
1331 | tem = Fcar (Fcdr (p->status)); | |
1332 | #ifdef VMS | |
1333 | if (XINT (tem) < NSIG) | |
b0310da4 | 1334 | write_string (sys_errlist [XINT (tem)], -1); |
d0d6b7c5 JB |
1335 | else |
1336 | #endif | |
1337 | Fprinc (symbol, Qnil); | |
1338 | } | |
e690ca94 | 1339 | else if (NETCONN1_P (p)) |
d0d6b7c5 | 1340 | { |
e690ca94 | 1341 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1342 | write_string ("closed", -1); |
e690ca94 KS |
1343 | else if (EQ (p->command, Qt)) |
1344 | write_string ("stopped", -1); | |
1345 | else if (EQ (symbol, Qrun)) | |
1346 | write_string ("open", -1); | |
d0d6b7c5 JB |
1347 | else |
1348 | Fprinc (symbol, Qnil); | |
1349 | } | |
1350 | else | |
1351 | Fprinc (symbol, Qnil); | |
1352 | ||
1353 | if (EQ (symbol, Qexit)) | |
1354 | { | |
1355 | Lisp_Object tem; | |
1356 | tem = Fcar (Fcdr (p->status)); | |
1357 | if (XFASTINT (tem)) | |
1358 | { | |
3162bafa | 1359 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1360 | write_string (tembuf, -1); |
1361 | } | |
1362 | } | |
1363 | ||
1364 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
1365 | remove_process (proc); | |
1366 | ||
e690ca94 | 1367 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1368 | if (NILP (p->buffer)) |
1369 | insert_string ("(none)"); | |
1370 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1371 | insert_string ("(Killed)"); | |
1372 | else | |
1373 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1374 | ||
e690ca94 KS |
1375 | if (!NILP (i_tty)) |
1376 | { | |
1377 | Findent_to (i_tty, minspace); | |
1378 | if (STRINGP (p->tty_name)) | |
1379 | Finsert (1, &p->tty_name); | |
1380 | } | |
a9fde32e | 1381 | |
e690ca94 | 1382 | Findent_to (i_command, minspace); |
a9fde32e | 1383 | |
e690ca94 KS |
1384 | if (EQ (p->status, Qlisten)) |
1385 | { | |
1386 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1387 | if (INTEGERP (port)) | |
1388 | port = Fnumber_to_string (port); | |
991234f0 | 1389 | if (NILP (port)) |
0dccee41 | 1390 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1391 | sprintf (tembuf, "(network %s server on %s)\n", |
bed9664a | 1392 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1393 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1394 | insert_string (tembuf); |
1395 | } | |
1396 | else if (NETCONN1_P (p)) | |
d0d6b7c5 | 1397 | { |
e690ca94 KS |
1398 | /* For a local socket, there is no host name, |
1399 | so display service instead. */ | |
1400 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1401 | if (!STRINGP (host)) | |
1402 | { | |
1403 | host = Fplist_get (p->childp, QCservice); | |
1404 | if (INTEGERP (host)) | |
1405 | host = Fnumber_to_string (host); | |
1406 | } | |
991234f0 | 1407 | if (NILP (host)) |
0dccee41 | 1408 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1409 | sprintf (tembuf, "(network %s connection to %s)\n", |
bed9664a | 1410 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1411 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 JB |
1412 | insert_string (tembuf); |
1413 | } | |
177c0ea7 | 1414 | else |
d0d6b7c5 JB |
1415 | { |
1416 | tem = p->command; | |
1417 | while (1) | |
1418 | { | |
1419 | tem1 = Fcar (tem); | |
1420 | Finsert (1, &tem1); | |
1421 | tem = Fcdr (tem); | |
1422 | if (NILP (tem)) | |
1423 | break; | |
1424 | insert_string (" "); | |
1425 | } | |
1426 | insert_string ("\n"); | |
1427 | } | |
1428 | } | |
1429 | return Qnil; | |
1430 | } | |
1431 | ||
e690ca94 | 1432 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1433 | doc: /* Display a list of all processes. |
e690ca94 KS |
1434 | If optional argument QUERY-ONLY is non-nil, only processes with |
1435 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1436 | Any process listed as exited or signaled is actually eliminated |
1437 | after the listing is made. */) | |
e690ca94 KS |
1438 | (query_only) |
1439 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1440 | { |
1441 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1442 | list_processes_1, query_only); |
d0d6b7c5 JB |
1443 | return Qnil; |
1444 | } | |
1445 | ||
1446 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1447 | doc: /* Return a list of all processes. */) |
1448 | () | |
d0d6b7c5 JB |
1449 | { |
1450 | return Fmapcar (Qcdr, Vprocess_alist); | |
1451 | } | |
1452 | \f | |
b0310da4 JB |
1453 | /* Starting asynchronous inferior processes. */ |
1454 | ||
1455 | static Lisp_Object start_process_unwind (); | |
1456 | ||
d0d6b7c5 | 1457 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1458 | doc: /* Start a program in a subprocess. Return the process object for it. |
1459 | NAME is name for process. It is modified if necessary to make it unique. | |
1460 | BUFFER is the buffer or (buffer-name) to associate with the process. | |
1461 | Process output goes at end of that buffer, unless you specify | |
1462 | an output stream or filter function to handle the output. | |
1463 | BUFFER may be also nil, meaning that this process is not associated | |
1464 | with any buffer. | |
1465 | Third arg is program file name. It is searched for in PATH. | |
3ecdf100 | 1466 | Remaining arguments are strings to give program as arguments. |
320aebc9 | 1467 | |
3ecdf100 | 1468 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1469 | (nargs, args) |
d0d6b7c5 JB |
1470 | int nargs; |
1471 | register Lisp_Object *args; | |
1472 | { | |
1e30af70 | 1473 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 JB |
1474 | #ifdef VMS |
1475 | register unsigned char *new_argv; | |
1476 | int len; | |
1477 | #else | |
1478 | register unsigned char **new_argv; | |
1479 | #endif | |
1480 | register int i; | |
aed13378 | 1481 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1482 | |
1483 | buffer = args[1]; | |
1484 | if (!NILP (buffer)) | |
1485 | buffer = Fget_buffer_create (buffer); | |
1486 | ||
1e30af70 JB |
1487 | /* Make sure that the child will be able to chdir to the current |
1488 | buffer's current directory, or its unhandled equivalent. We | |
1489 | can't just have the child check for an error when it does the | |
1490 | chdir, since it's in a vfork. | |
1491 | ||
1492 | We have to GCPRO around this because Fexpand_file_name and | |
1493 | Funhandled_file_name_directory might call a file name handling | |
1494 | function. The argument list is protected by the caller, so all | |
1495 | we really have to worry about is buffer. */ | |
1496 | { | |
1497 | struct gcpro gcpro1, gcpro2; | |
1498 | ||
1499 | current_dir = current_buffer->directory; | |
1500 | ||
1501 | GCPRO2 (buffer, current_dir); | |
1502 | ||
177c0ea7 | 1503 | current_dir |
7af71e17 RS |
1504 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), |
1505 | Qnil); | |
1e30af70 JB |
1506 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1507 | report_file_error ("Setting current directory", | |
1508 | Fcons (current_buffer->directory, Qnil)); | |
1509 | ||
1510 | UNGCPRO; | |
1511 | } | |
1512 | ||
d0d6b7c5 | 1513 | name = args[0]; |
b7826503 | 1514 | CHECK_STRING (name); |
d0d6b7c5 JB |
1515 | |
1516 | program = args[2]; | |
1517 | ||
b7826503 | 1518 | CHECK_STRING (program); |
d0d6b7c5 | 1519 | |
d0d6b7c5 | 1520 | proc = make_process (name); |
b0310da4 JB |
1521 | /* If an error occurs and we can't start the process, we want to |
1522 | remove it from the process list. This means that each error | |
1523 | check in create_process doesn't need to call remove_process | |
1524 | itself; it's all taken care of here. */ | |
1525 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1526 | |
1527 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1528 | XPROCESS (proc)->plist = Qnil; |
d0d6b7c5 JB |
1529 | XPROCESS (proc)->command_channel_p = Qnil; |
1530 | XPROCESS (proc)->buffer = buffer; | |
1531 | XPROCESS (proc)->sentinel = Qnil; | |
1532 | XPROCESS (proc)->filter = Qnil; | |
03f04413 KH |
1533 | XPROCESS (proc)->filter_multibyte |
1534 | = buffer_defaults.enable_multibyte_characters; | |
d0d6b7c5 JB |
1535 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); |
1536 | ||
2d942bfa KS |
1537 | #ifdef ADAPTIVE_READ_BUFFERING |
1538 | XPROCESS (proc)->adaptive_read_buffering = Vprocess_adaptive_read_buffering; | |
1539 | #endif | |
1540 | ||
7af71e17 RS |
1541 | /* Make the process marker point into the process buffer (if any). */ |
1542 | if (!NILP (buffer)) | |
d8a2934e RS |
1543 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1544 | BUF_ZV (XBUFFER (buffer)), | |
1545 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1546 | |
67918941 | 1547 | { |
d5d4ae71 KH |
1548 | /* Decide coding systems for communicating with the process. Here |
1549 | we don't setup the structure coding_system nor pay attention to | |
1550 | unibyte mode. They are done in create_process. */ | |
1551 | ||
67918941 RS |
1552 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1553 | Lisp_Object coding_systems = Qt; | |
1554 | Lisp_Object val, *args2; | |
a4a37e65 | 1555 | struct gcpro gcpro1, gcpro2; |
67918941 | 1556 | |
d5d4ae71 KH |
1557 | val = Vcoding_system_for_read; |
1558 | if (NILP (val)) | |
67918941 RS |
1559 | { |
1560 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1561 | args2[0] = Qstart_process; | |
1562 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1563 | GCPRO2 (proc, current_dir); |
67918941 RS |
1564 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1565 | UNGCPRO; | |
1566 | if (CONSP (coding_systems)) | |
70949dac | 1567 | val = XCAR (coding_systems); |
67918941 | 1568 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1569 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1570 | } |
1571 | XPROCESS (proc)->decode_coding_system = val; | |
1572 | ||
d5d4ae71 KH |
1573 | val = Vcoding_system_for_write; |
1574 | if (NILP (val)) | |
67918941 RS |
1575 | { |
1576 | if (EQ (coding_systems, Qt)) | |
1577 | { | |
1578 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1579 | args2[0] = Qstart_process; | |
1580 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1581 | GCPRO2 (proc, current_dir); |
67918941 RS |
1582 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1583 | UNGCPRO; | |
1584 | } | |
1585 | if (CONSP (coding_systems)) | |
70949dac | 1586 | val = XCDR (coding_systems); |
67918941 | 1587 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1588 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1589 | } |
1590 | XPROCESS (proc)->encode_coding_system = val; | |
1591 | } | |
0fa1789e | 1592 | |
a4a37e65 KH |
1593 | #ifdef VMS |
1594 | /* Make a one member argv with all args concatenated | |
1595 | together separated by a blank. */ | |
d5db4077 | 1596 | len = SBYTES (program) + 2; |
a4a37e65 KH |
1597 | for (i = 3; i < nargs; i++) |
1598 | { | |
1599 | tem = args[i]; | |
b7826503 | 1600 | CHECK_STRING (tem); |
d5db4077 | 1601 | len += SBYTES (tem) + 1; /* count the blank */ |
a4a37e65 KH |
1602 | } |
1603 | new_argv = (unsigned char *) alloca (len); | |
d5db4077 | 1604 | strcpy (new_argv, SDATA (program)); |
a4a37e65 KH |
1605 | for (i = 3; i < nargs; i++) |
1606 | { | |
1607 | tem = args[i]; | |
b7826503 | 1608 | CHECK_STRING (tem); |
a4a37e65 | 1609 | strcat (new_argv, " "); |
d5db4077 | 1610 | strcat (new_argv, SDATA (tem)); |
a4a37e65 KH |
1611 | } |
1612 | /* Need to add code here to check for program existence on VMS */ | |
177c0ea7 | 1613 | |
a4a37e65 KH |
1614 | #else /* not VMS */ |
1615 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1616 | ||
ed30cf85 RS |
1617 | /* If program file name is not absolute, search our path for it. |
1618 | Put the name we will really use in TEM. */ | |
d5db4077 KR |
1619 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) |
1620 | && !(SCHARS (program) > 1 | |
1621 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
a4a37e65 KH |
1622 | { |
1623 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1624 | ||
1625 | tem = Qnil; | |
1626 | GCPRO4 (name, program, buffer, current_dir); | |
cc4db0c7 | 1627 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); |
a4a37e65 KH |
1628 | UNGCPRO; |
1629 | if (NILP (tem)) | |
1630 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1631 | tem = Fexpand_file_name (tem, Qnil); | |
a4a37e65 KH |
1632 | } |
1633 | else | |
1634 | { | |
1635 | if (!NILP (Ffile_directory_p (program))) | |
1636 | error ("Specified program for new process is a directory"); | |
ed30cf85 | 1637 | tem = program; |
a4a37e65 KH |
1638 | } |
1639 | ||
ed30cf85 RS |
1640 | /* If program file name starts with /: for quoting a magic name, |
1641 | discard that. */ | |
1642 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1643 | && SREF (tem, 1) == ':') | |
1644 | tem = Fsubstring (tem, make_number (2), Qnil); | |
1645 | ||
1646 | /* Encode the file name and put it in NEW_ARGV. | |
1647 | That's where the child will use it to execute the program. */ | |
1648 | tem = ENCODE_FILE (tem); | |
1649 | new_argv[0] = SDATA (tem); | |
1650 | ||
a4a37e65 KH |
1651 | /* Here we encode arguments by the coding system used for sending |
1652 | data to the process. We don't support using different coding | |
1653 | systems for encoding arguments and for encoding data sent to the | |
1654 | process. */ | |
1655 | ||
1656 | for (i = 3; i < nargs; i++) | |
1657 | { | |
1658 | tem = args[i]; | |
b7826503 | 1659 | CHECK_STRING (tem); |
a4a37e65 KH |
1660 | if (STRING_MULTIBYTE (tem)) |
1661 | tem = (code_convert_string_norecord | |
1662 | (tem, XPROCESS (proc)->encode_coding_system, 1)); | |
d5db4077 | 1663 | new_argv[i - 2] = SDATA (tem); |
a4a37e65 KH |
1664 | } |
1665 | new_argv[i - 2] = 0; | |
1666 | #endif /* not VMS */ | |
1667 | ||
0fa1789e | 1668 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
e7fbaa65 | 1669 | XPROCESS (proc)->decoding_carryover = make_number (0); |
0fa1789e | 1670 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); |
e7fbaa65 | 1671 | XPROCESS (proc)->encoding_carryover = make_number (0); |
0fa1789e | 1672 | |
52a1b894 | 1673 | XPROCESS (proc)->inherit_coding_system_flag |
aa91317a RS |
1674 | = (NILP (buffer) || !inherit_process_coding_system |
1675 | ? Qnil : Qt); | |
52a1b894 | 1676 | |
6b53bb85 | 1677 | create_process (proc, (char **) new_argv, current_dir); |
d0d6b7c5 | 1678 | |
b0310da4 | 1679 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1680 | } |
1681 | ||
b0310da4 | 1682 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1683 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1684 | an error and the process wasn't started successfully, so we should |
1685 | remove it from the process list. */ | |
1686 | static Lisp_Object | |
1687 | start_process_unwind (proc) | |
1688 | Lisp_Object proc; | |
1689 | { | |
bcd69aea | 1690 | if (!PROCESSP (proc)) |
b0310da4 JB |
1691 | abort (); |
1692 | ||
1693 | /* Was PROC started successfully? */ | |
188d6c4e | 1694 | if (XINT (XPROCESS (proc)->pid) <= 0) |
b0310da4 JB |
1695 | remove_process (proc); |
1696 | ||
1697 | return Qnil; | |
1698 | } | |
1699 | ||
30904ab7 GM |
1700 | void |
1701 | create_process_1 (timer) | |
1702 | struct atimer *timer; | |
d0d6b7c5 | 1703 | { |
30904ab7 | 1704 | /* Nothing to do. */ |
d0d6b7c5 JB |
1705 | } |
1706 | ||
30904ab7 | 1707 | |
d0d6b7c5 JB |
1708 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1709 | #ifdef USG | |
1710 | #ifdef SIGCHLD | |
1711 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1712 | ||
1713 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1714 | int sigchld_deferred; | |
1715 | ||
1716 | SIGTYPE | |
1717 | create_process_sigchld () | |
1718 | { | |
1719 | signal (SIGCHLD, create_process_sigchld); | |
1720 | ||
1721 | sigchld_deferred = 1; | |
1722 | } | |
1723 | #endif | |
1724 | #endif | |
1725 | #endif | |
1726 | ||
1727 | #ifndef VMS /* VMS version of this function is in vmsproc.c. */ | |
6b53bb85 | 1728 | void |
1e30af70 | 1729 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1730 | Lisp_Object process; |
1731 | char **new_argv; | |
1e30af70 | 1732 | Lisp_Object current_dir; |
d0d6b7c5 | 1733 | { |
ecd1f654 | 1734 | int pid, inchannel, outchannel; |
d0d6b7c5 | 1735 | int sv[2]; |
0dc70c33 KH |
1736 | #ifdef POSIX_SIGNALS |
1737 | sigset_t procmask; | |
1738 | sigset_t blocked; | |
1739 | struct sigaction sigint_action; | |
1740 | struct sigaction sigquit_action; | |
1741 | #ifdef AIX | |
1742 | struct sigaction sighup_action; | |
1743 | #endif | |
1744 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1745 | #if 0 |
d0d6b7c5 JB |
1746 | #ifdef SIGCHLD |
1747 | SIGTYPE (*sigchld)(); | |
1748 | #endif | |
41d03b9a | 1749 | #endif /* 0 */ |
0dc70c33 | 1750 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1751 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1752 | volatile int forkin, forkout; | |
1753 | volatile int pty_flag = 0; | |
3ec68006 | 1754 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1755 | extern char **environ; |
3ec68006 | 1756 | #endif |
d0d6b7c5 | 1757 | |
d0d6b7c5 JB |
1758 | inchannel = outchannel = -1; |
1759 | ||
1760 | #ifdef HAVE_PTYS | |
fe45da4e | 1761 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1762 | outchannel = inchannel = allocate_pty (); |
1763 | ||
d0d6b7c5 JB |
1764 | if (inchannel >= 0) |
1765 | { | |
2af70a0c RS |
1766 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1767 | /* On most USG systems it does not work to open the pty's tty here, | |
1768 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1769 | #ifdef O_NOCTTY |
1770 | /* Don't let this terminal become our controlling terminal | |
1771 | (in case we don't have one). */ | |
68c45bf0 | 1772 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1773 | #else |
68c45bf0 | 1774 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1775 | #endif |
1776 | if (forkin < 0) | |
1777 | report_file_error ("Opening pty", Qnil); | |
1778 | #else | |
1779 | forkin = forkout = -1; | |
2af70a0c | 1780 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1781 | pty_flag = 1; |
1782 | } | |
1783 | else | |
1784 | #endif /* HAVE_PTYS */ | |
1785 | #ifdef SKTPAIR | |
1786 | { | |
1787 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv) < 0) | |
1788 | report_file_error ("Opening socketpair", Qnil); | |
1789 | outchannel = inchannel = sv[0]; | |
1790 | forkout = forkin = sv[1]; | |
1791 | } | |
1792 | #else /* not SKTPAIR */ | |
1793 | { | |
fc14013c KH |
1794 | int tem; |
1795 | tem = pipe (sv); | |
1796 | if (tem < 0) | |
1797 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1798 | inchannel = sv[0]; |
1799 | forkout = sv[1]; | |
fc14013c KH |
1800 | tem = pipe (sv); |
1801 | if (tem < 0) | |
1802 | { | |
68c45bf0 PE |
1803 | emacs_close (inchannel); |
1804 | emacs_close (forkout); | |
fc14013c KH |
1805 | report_file_error ("Creating pipe", Qnil); |
1806 | } | |
d0d6b7c5 JB |
1807 | outchannel = sv[1]; |
1808 | forkin = sv[0]; | |
1809 | } | |
1810 | #endif /* not SKTPAIR */ | |
1811 | ||
1812 | #if 0 | |
1813 | /* Replaced by close_process_descs */ | |
1814 | set_exclusive_use (inchannel); | |
1815 | set_exclusive_use (outchannel); | |
1816 | #endif | |
1817 | ||
1818 | /* Stride people say it's a mystery why this is needed | |
1819 | as well as the O_NDELAY, but that it fails without this. */ | |
1820 | #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) | |
1821 | { | |
1822 | int one = 1; | |
1823 | ioctl (inchannel, FIONBIO, &one); | |
1824 | } | |
1825 | #endif | |
1826 | ||
1827 | #ifdef O_NONBLOCK | |
1828 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1829 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1830 | #else |
1831 | #ifdef O_NDELAY | |
1832 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1833 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1834 | #endif |
1835 | #endif | |
1836 | ||
1837 | /* Record this as an active process, with its channels. | |
1838 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1839 | chan_process[inchannel] = process; | |
1d056e64 KH |
1840 | XSETINT (XPROCESS (process)->infd, inchannel); |
1841 | XSETINT (XPROCESS (process)->outfd, outchannel); | |
16782258 JD |
1842 | |
1843 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1844 | It was only used for getting the foreground tty process, so now | |
1845 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1846 | more portable (see USG_SUBTTY_WORKS above). */ | |
1847 | ||
d0d6b7c5 JB |
1848 | XPROCESS (process)->pty_flag = (pty_flag ? Qt : Qnil); |
1849 | XPROCESS (process)->status = Qrun; | |
03f04413 | 1850 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1851 | |
1852 | /* Delay interrupts until we have a chance to store | |
1853 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1854 | #ifdef POSIX_SIGNALS |
1855 | sigemptyset (&blocked); | |
1856 | #ifdef SIGCHLD | |
1857 | sigaddset (&blocked, SIGCHLD); | |
1858 | #endif | |
351e611f | 1859 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1860 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1861 | this sets the parent's signal handlers as well as the child's. | |
1862 | So delay all interrupts whose handlers the child might munge, | |
1863 | and record the current handlers so they can be restored later. */ | |
1864 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1865 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1866 | #ifdef AIX | |
1867 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1868 | #endif | |
351e611f | 1869 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
1870 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
1871 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
1872 | #ifdef SIGCHLD |
1873 | #ifdef BSD4_1 | |
1874 | sighold (SIGCHLD); | |
1875 | #else /* not BSD4_1 */ | |
6df54671 | 1876 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
1877 | sigsetmask (sigmask (SIGCHLD)); |
1878 | #else /* ordinary USG */ | |
1879 | #if 0 | |
1880 | sigchld_deferred = 0; | |
1881 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
1882 | #endif | |
1883 | #endif /* ordinary USG */ | |
1884 | #endif /* not BSD4_1 */ | |
1885 | #endif /* SIGCHLD */ | |
0dc70c33 | 1886 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 1887 | |
3081bf8d | 1888 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1889 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1890 | if (inchannel > max_process_desc) |
1891 | max_process_desc = inchannel; | |
1892 | ||
d0d6b7c5 JB |
1893 | /* Until we store the proper pid, enable sigchld_handler |
1894 | to recognize an unknown pid as standing for this process. | |
1895 | It is very important not to let this `marker' value stay | |
1896 | in the table after this function has returned; if it does | |
1897 | it might cause call-process to hang and subsequent asynchronous | |
1898 | processes to get their return values scrambled. */ | |
1899 | XSETINT (XPROCESS (process)->pid, -1); | |
1900 | ||
ececcbec | 1901 | BLOCK_INPUT; |
177c0ea7 | 1902 | |
d0d6b7c5 JB |
1903 | { |
1904 | /* child_setup must clobber environ on systems with true vfork. | |
1905 | Protect it from permanent change. */ | |
1906 | char **save_environ = environ; | |
1907 | ||
14dc6093 | 1908 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1909 | |
e98d950b | 1910 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1911 | pid = vfork (); |
1912 | if (pid == 0) | |
e98d950b | 1913 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1914 | { |
1915 | int xforkin = forkin; | |
1916 | int xforkout = forkout; | |
1917 | ||
1918 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1919 | but fails to handle all the cases. */ | |
1920 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1921 | sigsetmask (SIGEMPTYMASK); | |
1922 | #endif | |
1923 | ||
1924 | /* Make the pty be the controlling terminal of the process. */ | |
1925 | #ifdef HAVE_PTYS | |
1926 | /* First, disconnect its current controlling terminal. */ | |
1927 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1928 | /* We tried doing setsid only if pty_flag, but it caused |
1929 | process_set_signal to fail on SGI when using a pipe. */ | |
1930 | setsid (); | |
ce4c9c90 | 1931 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 1932 | if (pty_flag) |
39e9ebcd | 1933 | { |
39e9ebcd RS |
1934 | #ifdef TIOCSCTTY |
1935 | /* We ignore the return value | |
1936 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1937 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1938 | #endif |
39e9ebcd | 1939 | } |
d0d6b7c5 | 1940 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1941 | #ifdef USG |
000ab717 | 1942 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1943 | afterwards. Otherwise, we lose our controlling tty which |
1944 | is set when we open the pty. */ | |
1945 | setpgrp (); | |
1946 | #endif /* USG */ | |
1947 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
1948 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
1949 | if (pty_flag && xforkin >= 0) | |
1950 | { | |
1951 | struct termios t; | |
1952 | tcgetattr (xforkin, &t); | |
1953 | t.c_lflag = LDISC1; | |
1954 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1955 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1956 | } |
1957 | #else | |
aafadd9f | 1958 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1959 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1960 | { |
1961 | /* Use new line discipline. */ | |
1962 | int ldisc = NTTYDISC; | |
4458f555 | 1963 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1964 | } |
000ab717 | 1965 | #endif |
9bcf8ec6 | 1966 | #endif |
177c0ea7 | 1967 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1968 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1969 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1970 | if (pty_flag) | |
1971 | { | |
177c0ea7 | 1972 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1973 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1974 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 1975 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 1976 | emacs_close (j); |
5a570e37 | 1977 | #ifndef USG |
d0d6b7c5 JB |
1978 | /* In order to get a controlling terminal on some versions |
1979 | of BSD, it is necessary to put the process in pgrp 0 | |
1980 | before it opens the terminal. */ | |
99c1aeca | 1981 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1982 | setpgid (0, 0); |
1983 | #else | |
d0d6b7c5 | 1984 | setpgrp (0, 0); |
3ea1d291 | 1985 | #endif |
d0d6b7c5 JB |
1986 | #endif |
1987 | } | |
1988 | #endif /* TIOCNOTTY */ | |
1989 | ||
99153b9e | 1990 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1991 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1992 | conditional on TIOCSPGRP, |
1993 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1994 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1995 | that system does seem to need this code, even though | |
1996 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1997 | /* Now close the pty (if we had it open) and reopen it. |
1998 | This makes the pty the controlling terminal of the subprocess. */ | |
1999 | if (pty_flag) | |
2000 | { | |
99e3d726 RS |
2001 | #ifdef SET_CHILD_PTY_PGRP |
2002 | int pgrp = getpid (); | |
2003 | #endif | |
2004 | ||
68c45bf0 PE |
2005 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2006 | would work? */ | |
d0d6b7c5 | 2007 | if (xforkin >= 0) |
68c45bf0 PE |
2008 | emacs_close (xforkin); |
2009 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2010 | |
4aa54ba8 RS |
2011 | if (xforkin < 0) |
2012 | { | |
68c45bf0 PE |
2013 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2014 | emacs_write (1, pty_name, strlen (pty_name)); | |
2015 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2016 | _exit (1); |
2017 | } | |
2018 | ||
99e3d726 RS |
2019 | #ifdef SET_CHILD_PTY_PGRP |
2020 | ioctl (xforkin, TIOCSPGRP, &pgrp); | |
2021 | ioctl (xforkout, TIOCSPGRP, &pgrp); | |
2022 | #endif | |
d0d6b7c5 | 2023 | } |
99153b9e | 2024 | #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */ |
e9bf058b | 2025 | |
d0d6b7c5 | 2026 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2027 | if (pty_flag) |
2028 | { | |
2029 | SETUP_SLAVE_PTY; | |
2030 | } | |
d0d6b7c5 JB |
2031 | #endif /* SETUP_SLAVE_PTY */ |
2032 | #ifdef AIX | |
2033 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2034 | Now reenable it in the child, so it will die when we want it to. */ | |
2035 | if (pty_flag) | |
2036 | signal (SIGHUP, SIG_DFL); | |
2037 | #endif | |
2038 | #endif /* HAVE_PTYS */ | |
2039 | ||
0dc70c33 KH |
2040 | signal (SIGINT, SIG_DFL); |
2041 | signal (SIGQUIT, SIG_DFL); | |
2042 | ||
2043 | /* Stop blocking signals in the child. */ | |
2044 | #ifdef POSIX_SIGNALS | |
2045 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2046 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2047 | #ifdef SIGCHLD |
2048 | #ifdef BSD4_1 | |
2049 | sigrelse (SIGCHLD); | |
2050 | #else /* not BSD4_1 */ | |
6df54671 | 2051 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2052 | sigsetmask (SIGEMPTYMASK); |
2053 | #else /* ordinary USG */ | |
63528b78 | 2054 | #if 0 |
d0d6b7c5 | 2055 | signal (SIGCHLD, sigchld); |
63528b78 | 2056 | #endif |
d0d6b7c5 JB |
2057 | #endif /* ordinary USG */ |
2058 | #endif /* not BSD4_1 */ | |
2059 | #endif /* SIGCHLD */ | |
0dc70c33 | 2060 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2061 | |
ab01d0a8 RS |
2062 | if (pty_flag) |
2063 | child_setup_tty (xforkout); | |
e98d950b RS |
2064 | #ifdef WINDOWSNT |
2065 | pid = child_setup (xforkin, xforkout, xforkout, | |
2066 | new_argv, 1, current_dir); | |
177c0ea7 | 2067 | #else /* not WINDOWSNT */ |
d0d6b7c5 | 2068 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2069 | new_argv, 1, current_dir); |
e98d950b | 2070 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2071 | } |
2072 | environ = save_environ; | |
2073 | } | |
2074 | ||
ececcbec RS |
2075 | UNBLOCK_INPUT; |
2076 | ||
4a127b3b | 2077 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2078 | if (pid < 0) |
6311cf58 RS |
2079 | { |
2080 | if (forkin >= 0) | |
68c45bf0 | 2081 | emacs_close (forkin); |
6311cf58 | 2082 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2083 | emacs_close (forkout); |
6311cf58 | 2084 | } |
4a127b3b KH |
2085 | else |
2086 | { | |
2087 | /* vfork succeeded. */ | |
2088 | XSETFASTINT (XPROCESS (process)->pid, pid); | |
d0d6b7c5 | 2089 | |
e98d950b | 2090 | #ifdef WINDOWSNT |
4a127b3b | 2091 | register_child (pid, inchannel); |
e98d950b RS |
2092 | #endif /* WINDOWSNT */ |
2093 | ||
4a127b3b KH |
2094 | /* If the subfork execv fails, and it exits, |
2095 | this close hangs. I don't know why. | |
2096 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2097 | { |
2098 | struct atimer *timer; | |
2099 | EMACS_TIME offset; | |
177c0ea7 | 2100 | |
30904ab7 GM |
2101 | stop_polling (); |
2102 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2103 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2104 | |
30904ab7 GM |
2105 | if (forkin >= 0) |
2106 | emacs_close (forkin); | |
2107 | ||
2108 | cancel_atimer (timer); | |
2109 | start_polling (); | |
2110 | } | |
177c0ea7 | 2111 | |
4a127b3b | 2112 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2113 | emacs_close (forkout); |
d0d6b7c5 | 2114 | |
875e6b94 | 2115 | #ifdef HAVE_PTYS |
4a127b3b KH |
2116 | if (pty_flag) |
2117 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2118 | else | |
875e6b94 | 2119 | #endif |
4a127b3b KH |
2120 | XPROCESS (process)->tty_name = Qnil; |
2121 | } | |
3b9a3dfa | 2122 | |
4a127b3b KH |
2123 | /* Restore the signal state whether vfork succeeded or not. |
2124 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2125 | #ifdef POSIX_SIGNALS |
351e611f | 2126 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2127 | /* Restore the parent's signal handlers. */ |
2128 | sigaction (SIGINT, &sigint_action, 0); | |
2129 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2130 | #ifdef AIX | |
2131 | sigaction (SIGHUP, &sighup_action, 0); | |
2132 | #endif | |
351e611f | 2133 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2134 | /* Stop blocking signals in the parent. */ |
2135 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2136 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2137 | #ifdef SIGCHLD |
2138 | #ifdef BSD4_1 | |
2139 | sigrelse (SIGCHLD); | |
2140 | #else /* not BSD4_1 */ | |
6df54671 | 2141 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2142 | sigsetmask (SIGEMPTYMASK); |
2143 | #else /* ordinary USG */ | |
2144 | #if 0 | |
2145 | signal (SIGCHLD, sigchld); | |
2146 | /* Now really handle any of these signals | |
2147 | that came in during this function. */ | |
2148 | if (sigchld_deferred) | |
2149 | kill (getpid (), SIGCHLD); | |
2150 | #endif | |
2151 | #endif /* ordinary USG */ | |
2152 | #endif /* not BSD4_1 */ | |
2153 | #endif /* SIGCHLD */ | |
0dc70c33 | 2154 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2155 | |
2156 | /* Now generate the error if vfork failed. */ | |
2157 | if (pid < 0) | |
2158 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 JB |
2159 | } |
2160 | #endif /* not VMS */ | |
2161 | ||
e690ca94 | 2162 | \f |
d0d6b7c5 JB |
2163 | #ifdef HAVE_SOCKETS |
2164 | ||
e690ca94 KS |
2165 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2166 | The address family of sa is not included in the result. */ | |
2167 | ||
2168 | static Lisp_Object | |
2169 | conv_sockaddr_to_lisp (sa, len) | |
2170 | struct sockaddr *sa; | |
2171 | int len; | |
2172 | { | |
2173 | Lisp_Object address; | |
2174 | int i; | |
2175 | unsigned char *cp; | |
2176 | register struct Lisp_Vector *p; | |
2177 | ||
2178 | switch (sa->sa_family) | |
2179 | { | |
2180 | case AF_INET: | |
2181 | { | |
2182 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2183 | len = sizeof (sin->sin_addr) + 1; | |
2184 | address = Fmake_vector (make_number (len), Qnil); | |
2185 | p = XVECTOR (address); | |
2186 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
2187 | cp = (unsigned char *)&sin->sin_addr; | |
2188 | break; | |
2189 | } | |
2190 | #ifdef HAVE_LOCAL_SOCKETS | |
2191 | case AF_LOCAL: | |
2192 | { | |
fb23673a EZ |
2193 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2194 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2195 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2196 | break; |
fb23673a | 2197 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2198 | } |
2199 | #endif | |
2200 | default: | |
2201 | len -= sizeof (sa->sa_family); | |
2202 | address = Fcons (make_number (sa->sa_family), | |
2203 | Fmake_vector (make_number (len), Qnil)); | |
2204 | p = XVECTOR (XCDR (address)); | |
2205 | cp = (unsigned char *) sa + sizeof (sa->sa_family); | |
2206 | break; | |
2207 | } | |
2208 | ||
2209 | i = 0; | |
2210 | while (i < len) | |
2211 | p->contents[i++] = make_number (*cp++); | |
2212 | ||
2213 | return address; | |
2214 | } | |
2215 | ||
2216 | ||
2217 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2218 | ||
2219 | static int | |
2220 | get_lisp_to_sockaddr_size (address, familyp) | |
2221 | Lisp_Object address; | |
2222 | int *familyp; | |
2223 | { | |
2224 | register struct Lisp_Vector *p; | |
2225 | ||
2226 | if (VECTORP (address)) | |
2227 | { | |
2228 | p = XVECTOR (address); | |
2229 | if (p->size == 5) | |
2230 | { | |
2231 | *familyp = AF_INET; | |
2232 | return sizeof (struct sockaddr_in); | |
2233 | } | |
2234 | } | |
2235 | #ifdef HAVE_LOCAL_SOCKETS | |
2236 | else if (STRINGP (address)) | |
2237 | { | |
2238 | *familyp = AF_LOCAL; | |
2239 | return sizeof (struct sockaddr_un); | |
2240 | } | |
2241 | #endif | |
2242 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2243 | { | |
2244 | struct sockaddr *sa; | |
2245 | *familyp = XINT (XCAR (address)); | |
2246 | p = XVECTOR (XCDR (address)); | |
2247 | return p->size + sizeof (sa->sa_family); | |
2248 | } | |
2249 | return 0; | |
2250 | } | |
2251 | ||
2252 | /* Convert an address object (vector or string) to an internal sockaddr. | |
2253 | Format of address has already been validated by size_lisp_to_sockaddr. */ | |
2254 | ||
2255 | static void | |
2256 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2257 | int family; | |
2258 | Lisp_Object address; | |
2259 | struct sockaddr *sa; | |
2260 | int len; | |
2261 | { | |
2262 | register struct Lisp_Vector *p; | |
34967d0f | 2263 | register unsigned char *cp = NULL; |
e690ca94 KS |
2264 | register int i; |
2265 | ||
2266 | bzero (sa, len); | |
2267 | sa->sa_family = family; | |
2268 | ||
2269 | if (VECTORP (address)) | |
2270 | { | |
2271 | p = XVECTOR (address); | |
2272 | if (family == AF_INET) | |
2273 | { | |
2274 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2275 | len = sizeof (sin->sin_addr) + 1; | |
2276 | i = XINT (p->contents[--len]); | |
2277 | sin->sin_port = htons (i); | |
2278 | cp = (unsigned char *)&sin->sin_addr; | |
2279 | } | |
2280 | } | |
2281 | else if (STRINGP (address)) | |
2282 | { | |
2283 | #ifdef HAVE_LOCAL_SOCKETS | |
2284 | if (family == AF_LOCAL) | |
2285 | { | |
fb23673a | 2286 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2287 | cp = SDATA (address); |
fb23673a EZ |
2288 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2289 | sockun->sun_path[i] = *cp++; | |
e690ca94 KS |
2290 | } |
2291 | #endif | |
2292 | return; | |
2293 | } | |
2294 | else | |
2295 | { | |
2296 | p = XVECTOR (XCDR (address)); | |
2297 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2298 | } | |
2299 | ||
2300 | for (i = 0; i < len; i++) | |
2301 | if (INTEGERP (p->contents[i])) | |
2302 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2303 | } | |
2304 | ||
2305 | #ifdef DATAGRAM_SOCKETS | |
2306 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2307 | 1, 1, 0, | |
2308 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2309 | (process) | |
2310 | Lisp_Object process; | |
2311 | { | |
2312 | int channel; | |
2313 | ||
2314 | CHECK_PROCESS (process); | |
2315 | ||
2316 | if (!DATAGRAM_CONN_P (process)) | |
2317 | return Qnil; | |
2318 | ||
bed9664a | 2319 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2320 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2321 | datagram_address[channel].len); | |
2322 | } | |
2323 | ||
2324 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2325 | 2, 2, 0, | |
2326 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2327 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2328 | (process, address) | |
2329 | Lisp_Object process, address; | |
2330 | { | |
2331 | int channel; | |
2332 | int family, len; | |
2333 | ||
2334 | CHECK_PROCESS (process); | |
2335 | ||
2336 | if (!DATAGRAM_CONN_P (process)) | |
2337 | return Qnil; | |
2338 | ||
bed9664a | 2339 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2340 | |
2341 | len = get_lisp_to_sockaddr_size (address, &family); | |
2342 | if (datagram_address[channel].len != len) | |
2343 | return Qnil; | |
2344 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2345 | return address; | |
2346 | } | |
2347 | #endif | |
2348 | \f | |
2349 | ||
2350 | static struct socket_options { | |
2351 | /* The name of this option. Should be lowercase version of option | |
177c0ea7 | 2352 | name without SO_ prefix. */ |
e690ca94 | 2353 | char *name; |
e690ca94 KS |
2354 | /* Option level SOL_... */ |
2355 | int optlevel; | |
2356 | /* Option number SO_... */ | |
2357 | int optnum; | |
151ec9e2 | 2358 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2ccf3102 | 2359 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; |
e690ca94 KS |
2360 | } socket_options[] = |
2361 | { | |
2362 | #ifdef SO_BINDTODEVICE | |
151ec9e2 | 2363 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2364 | #endif |
2365 | #ifdef SO_BROADCAST | |
2ccf3102 | 2366 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2367 | #endif |
2368 | #ifdef SO_DONTROUTE | |
2ccf3102 | 2369 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2370 | #endif |
2371 | #ifdef SO_KEEPALIVE | |
2ccf3102 | 2372 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2373 | #endif |
2374 | #ifdef SO_LINGER | |
2ccf3102 | 2375 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2376 | #endif |
2377 | #ifdef SO_OOBINLINE | |
2ccf3102 | 2378 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2379 | #endif |
2380 | #ifdef SO_PRIORITY | |
2ccf3102 | 2381 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2382 | #endif |
2383 | #ifdef SO_REUSEADDR | |
2ccf3102 | 2384 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2385 | #endif |
2ccf3102 | 2386 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2387 | }; |
2388 | ||
2ccf3102 | 2389 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2390 | |
2ccf3102 KS |
2391 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2392 | Signals an error if setting a known option fails. | |
2393 | */ | |
e690ca94 KS |
2394 | |
2395 | static int | |
2ccf3102 | 2396 | set_socket_option (s, opt, val) |
e690ca94 | 2397 | int s; |
2ccf3102 | 2398 | Lisp_Object opt, val; |
e690ca94 | 2399 | { |
2ccf3102 KS |
2400 | char *name; |
2401 | struct socket_options *sopt; | |
2402 | int ret = 0; | |
e690ca94 | 2403 | |
2ccf3102 | 2404 | CHECK_SYMBOL (opt); |
e690ca94 | 2405 | |
2ccf3102 KS |
2406 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2407 | for (sopt = socket_options; sopt->name; sopt++) | |
2408 | if (strcmp (name, sopt->name) == 0) | |
2409 | break; | |
e690ca94 | 2410 | |
2ccf3102 KS |
2411 | switch (sopt->opttype) |
2412 | { | |
2413 | case SOPT_BOOL: | |
2414 | { | |
2415 | int optval; | |
2416 | optval = NILP (val) ? 0 : 1; | |
2417 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2418 | &optval, sizeof (optval)); | |
2419 | break; | |
2420 | } | |
e690ca94 | 2421 | |
2ccf3102 KS |
2422 | case SOPT_INT: |
2423 | { | |
2424 | int optval; | |
2425 | if (INTEGERP (val)) | |
2426 | optval = XINT (val); | |
2427 | else | |
2428 | error ("Bad option value for %s", name); | |
2429 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2430 | &optval, sizeof (optval)); | |
2431 | break; | |
2432 | } | |
e690ca94 | 2433 | |
151ec9e2 KS |
2434 | #ifdef SO_BINDTODEVICE |
2435 | case SOPT_IFNAME: | |
2ccf3102 | 2436 | { |
151ec9e2 KS |
2437 | char devname[IFNAMSIZ+1]; |
2438 | ||
2439 | /* This is broken, at least in the Linux 2.4 kernel. | |
2440 | To unbind, the arg must be a zero integer, not the empty string. | |
2441 | This should work on all systems. KFS. 2003-09-23. */ | |
2442 | bzero (devname, sizeof devname); | |
2443 | if (STRINGP (val)) | |
2444 | { | |
2445 | char *arg = (char *) SDATA (val); | |
2446 | int len = min (strlen (arg), IFNAMSIZ); | |
2447 | bcopy (arg, devname, len); | |
2448 | } | |
2449 | else if (!NILP (val)) | |
2ccf3102 KS |
2450 | error ("Bad option value for %s", name); |
2451 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
151ec9e2 KS |
2452 | devname, IFNAMSIZ); |
2453 | break; | |
2ccf3102 | 2454 | } |
151ec9e2 | 2455 | #endif |
e690ca94 | 2456 | |
177c0ea7 | 2457 | #ifdef SO_LINGER |
2ccf3102 KS |
2458 | case SOPT_LINGER: |
2459 | { | |
2460 | struct linger linger; | |
e690ca94 | 2461 | |
2ccf3102 KS |
2462 | linger.l_onoff = 1; |
2463 | linger.l_linger = 0; | |
2464 | if (INTEGERP (val)) | |
2465 | linger.l_linger = XINT (val); | |
2466 | else | |
2467 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2468 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2469 | &linger, sizeof (linger)); | |
2470 | break; | |
2471 | } | |
e690ca94 | 2472 | #endif |
2ccf3102 KS |
2473 | |
2474 | default: | |
2475 | return 0; | |
e690ca94 | 2476 | } |
2ccf3102 KS |
2477 | |
2478 | if (ret < 0) | |
2479 | report_file_error ("Cannot set network option", | |
2480 | Fcons (opt, Fcons (val, Qnil))); | |
2481 | return (1 << sopt->optbit); | |
e690ca94 KS |
2482 | } |
2483 | ||
2ccf3102 KS |
2484 | |
2485 | DEFUN ("set-network-process-option", | |
2486 | Fset_network_process_option, Sset_network_process_option, | |
2487 | 3, 4, 0, | |
2488 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2489 | See `make-network-process' for a list of options and values. | |
2490 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2491 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2492 | (process, option, value, no_error) | |
2493 | Lisp_Object process, option, value; | |
2494 | Lisp_Object no_error; | |
e690ca94 | 2495 | { |
e1283999 | 2496 | int s; |
151ec9e2 | 2497 | struct Lisp_Process *p; |
e690ca94 | 2498 | |
e690ca94 | 2499 | CHECK_PROCESS (process); |
151ec9e2 KS |
2500 | p = XPROCESS (process); |
2501 | if (!NETCONN1_P (p)) | |
2502 | error ("Process is not a network process"); | |
2ccf3102 | 2503 | |
151ec9e2 | 2504 | s = XINT (p->infd); |
2ccf3102 KS |
2505 | if (s < 0) |
2506 | error ("Process is not running"); | |
2507 | ||
2508 | if (set_socket_option (s, option, value)) | |
151ec9e2 KS |
2509 | { |
2510 | p->childp = Fplist_put (p->childp, option, value); | |
2511 | return Qt; | |
2512 | } | |
2ccf3102 KS |
2513 | |
2514 | if (NILP (no_error)) | |
2515 | error ("Unknown or unsupported option"); | |
2516 | ||
2517 | return Qnil; | |
e690ca94 | 2518 | } |
2ccf3102 | 2519 | |
e690ca94 | 2520 | \f |
e690ca94 KS |
2521 | /* A version of request_sigio suitable for a record_unwind_protect. */ |
2522 | ||
2523 | Lisp_Object | |
2524 | unwind_request_sigio (dummy) | |
2525 | Lisp_Object dummy; | |
2526 | { | |
2527 | if (interrupt_input) | |
2528 | request_sigio (); | |
2529 | return Qnil; | |
2530 | } | |
2531 | ||
2532 | /* Create a network stream/datagram client/server process. Treated | |
2533 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2534 | differences are in status display and process deletion. A network |
2535 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2536 | stop/continue it and deactivate/close it via delete-process */ |
2537 | ||
177c0ea7 JB |
2538 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2539 | 0, MANY, 0, | |
e690ca94 KS |
2540 | doc: /* Create and return a network server or client process. |
2541 | ||
fa9d4315 | 2542 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2543 | input and output work as for subprocesses and `delete-process' closes |
2544 | a network connection. However, a network process has no process id, | |
2545 | it cannot be signalled, and the status codes are different from normal | |
2546 | processes. | |
2547 | ||
2548 | Arguments are specified as keyword/argument pairs. The following | |
2549 | arguments are defined: | |
2550 | ||
2551 | :name NAME -- NAME is name for process. It is modified if necessary | |
2552 | to make it unique. | |
2553 | ||
2554 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2555 | with the process. Process output goes at end of that buffer, unless | |
2556 | you specify an output stream or filter function to handle the output. | |
2557 | BUFFER may be also nil, meaning that this process is not associated | |
2558 | with any buffer. | |
2559 | ||
2560 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2561 | address. The symbol `local' specifies the local host. If specified | |
2562 | for a server process, it must be a valid name or address for the local | |
2563 | host, and only clients connecting to that address will be accepted. | |
2564 | ||
2565 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2566 | integer specifying a port number to connect to. If SERVICE is t, | |
2567 | a random port number is selected for the server. | |
2568 | ||
9057ff80 KS |
2569 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
2570 | stream type connection, `datagram' creates a datagram type connection. | |
2571 | ||
e690ca94 KS |
2572 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
2573 | service specified by HOST and SERVICE. The default address family is | |
2574 | Inet (or IPv4) for the host and port number specified by HOST and | |
2575 | SERVICE. Other address families supported are: | |
2576 | local -- for a local (i.e. UNIX) address specified by SERVICE. | |
2577 | ||
2578 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2579 | This parameter is ignored when opening a client process. When specified | |
2580 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2581 | ||
2582 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2583 | connection. This parameter is ignored when opening a stream server | |
2584 | process. For a datagram server process, it specifies the initial | |
2585 | setting of the remote datagram address. When specified for a client | |
2586 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2587 | ||
2588 | The format of ADDRESS depends on the address family: | |
2589 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2590 | corresponding to numeric IP address A.B.C.D and port number P. | |
2591 | - A local address is represented as a string with the address in the | |
2592 | local address space. | |
2593 | - An "unsupported family" address is represented by a cons (F . AV) | |
2594 | where F is the family number and AV is a vector containing the socket | |
2595 | address data with one element per address data byte. Do not rely on | |
2596 | this format in portable code, as it may depend on implementation | |
2597 | defined constants, data sizes, and data structure alignment. | |
2598 | ||
2ccf3102 KS |
2599 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2600 | system used for both reading and writing for this process. If CODING | |
2601 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2602 | ENCODING is used for writing. | |
e690ca94 KS |
2603 | |
2604 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2605 | return without waiting for the connection to complete; instead, the | |
2606 | sentinel function will be called with second arg matching "open" (if | |
2607 | successful) or "failed" when the connect completes. Default is to use | |
2608 | a blocking connect (i.e. wait) for stream type connections. | |
2609 | ||
2610 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
2611 | running when emacs is exited. | |
2612 | ||
2613 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2614 | In the stopped state, a server process does not accept new | |
2615 | connections, and a client process does not handle incoming traffic. | |
2616 | The stopped state is cleared by `continue-process' and set by | |
2617 | `stop-process'. | |
2618 | ||
2619 | :filter FILTER -- Install FILTER as the process filter. | |
2620 | ||
7392e23c KS |
2621 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2622 | process filter are multibyte, otherwise they are unibyte. | |
2623 | If this keyword is not specified, the strings are multibyte iff | |
03f04413 KH |
2624 | `default-enable-multibyte-characters' is non-nil. |
2625 | ||
e690ca94 KS |
2626 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2627 | ||
2628 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2629 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2630 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2631 | is the server process, CLIENT is the new process for the connection, | |
2632 | and MESSAGE is a string. | |
2633 | ||
faa7db08 | 2634 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2635 | |
2ccf3102 | 2636 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2637 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
2ccf3102 KS |
2638 | If QLEN is an integer, it is used as the max. length of the server's |
2639 | pending connection queue (also known as the backlog); the default | |
2640 | queue length is 5. Default is to create a client process. | |
2641 | ||
2642 | The following network options can be specified for this connection: | |
2643 | ||
2ccf3102 KS |
2644 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. |
2645 | :dontroute BOOL -- Only send to directly connected hosts. | |
2646 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2647 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2648 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2649 | :priority INT -- Set protocol defined priority for sent packets. | |
2650 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2651 | (this is allowed by default for a server process). | |
151ec9e2 KS |
2652 | :bindtodevice NAME -- bind to interface NAME. Using this may require |
2653 | special privileges on some systems. | |
2ccf3102 KS |
2654 | |
2655 | Consult the relevant system programmer's manual pages for more | |
2656 | information on using these options. | |
2657 | ||
2658 | ||
2659 | A server process will listen for and accept connections from clients. | |
2660 | When a client connection is accepted, a new network process is created | |
2661 | for the connection with the following parameters: | |
e690ca94 | 2662 | |
e690ca94 KS |
2663 | - The client's process name is constructed by concatenating the server |
2664 | process' NAME and a client identification string. | |
2665 | - If the FILTER argument is non-nil, the client process will not get a | |
2666 | separate process buffer; otherwise, the client's process buffer is a newly | |
2667 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2668 | NAME concatenated with the client identification string. |
e690ca94 KS |
2669 | - The connection type and the process filter and sentinel parameters are |
2670 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2671 | - The client process' contact info is set according to the client's | |
2672 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2673 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2674 | |
2675 | Notice that the FILTER and SENTINEL args are never used directly by | |
2676 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2677 | the server process, but via the optional :log function, accepted (and |
2678 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2679 | |
365aee82 KS |
2680 | The original argument list, modified with the actual connection |
2681 | information, is available via the `process-contact' function. | |
365aee82 | 2682 | |
fa9d4315 | 2683 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
2684 | (nargs, args) |
2685 | int nargs; | |
2686 | Lisp_Object *args; | |
d0d6b7c5 JB |
2687 | { |
2688 | Lisp_Object proc; | |
e690ca94 KS |
2689 | Lisp_Object contact; |
2690 | struct Lisp_Process *p; | |
70dbdb36 | 2691 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2692 | struct addrinfo ai, *res, *lres; |
2693 | struct addrinfo hints; | |
2694 | char *portstring, portbuf[128]; | |
70dbdb36 | 2695 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2696 | struct _emacs_addrinfo |
2697 | { | |
2698 | int ai_family; | |
2699 | int ai_socktype; | |
2700 | int ai_protocol; | |
2701 | int ai_addrlen; | |
2702 | struct sockaddr *ai_addr; | |
2703 | struct _emacs_addrinfo *ai_next; | |
2704 | } ai, *res, *lres; | |
418b48fd | 2705 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2706 | struct sockaddr_in address_in; |
2707 | #ifdef HAVE_LOCAL_SOCKETS | |
2708 | struct sockaddr_un address_un; | |
2709 | #endif | |
2710 | int port; | |
dd2a17ab KS |
2711 | int ret = 0; |
2712 | int xerrno = 0; | |
418b48fd | 2713 | int s = -1, outch, inch; |
e690ca94 | 2714 | struct gcpro gcpro1; |
e333e864 | 2715 | int retry = 0; |
aed13378 | 2716 | int count = SPECPDL_INDEX (); |
5684cd6e | 2717 | int count1; |
e690ca94 KS |
2718 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2719 | Lisp_Object tem; | |
2720 | Lisp_Object name, buffer, host, service, address; | |
2721 | Lisp_Object filter, sentinel; | |
2722 | int is_non_blocking_client = 0; | |
2ccf3102 | 2723 | int is_server = 0, backlog = 5; |
9057ff80 | 2724 | int socktype; |
e690ca94 KS |
2725 | int family = -1; |
2726 | ||
2727 | if (nargs == 0) | |
2728 | return Qnil; | |
dd2a17ab | 2729 | |
e690ca94 KS |
2730 | /* Save arguments for process-contact and clone-process. */ |
2731 | contact = Flist (nargs, args); | |
2732 | GCPRO1 (contact); | |
2733 | ||
bff3ed0a RS |
2734 | #ifdef WINDOWSNT |
2735 | /* Ensure socket support is loaded if available. */ | |
2736 | init_winsock (TRUE); | |
2737 | #endif | |
2738 | ||
9057ff80 KS |
2739 | /* :type TYPE (nil: stream, datagram */ |
2740 | tem = Fplist_get (contact, QCtype); | |
2741 | if (NILP (tem)) | |
2742 | socktype = SOCK_STREAM; | |
2743 | #ifdef DATAGRAM_SOCKETS | |
2744 | else if (EQ (tem, Qdatagram)) | |
2745 | socktype = SOCK_DGRAM; | |
e690ca94 | 2746 | #endif |
9057ff80 KS |
2747 | else |
2748 | error ("Unsupported connection type"); | |
e690ca94 KS |
2749 | |
2750 | /* :server BOOL */ | |
2751 | tem = Fplist_get (contact, QCserver); | |
2752 | if (!NILP (tem)) | |
2753 | { | |
75728599 JR |
2754 | /* Don't support network sockets when non-blocking mode is |
2755 | not available, since a blocked Emacs is not useful. */ | |
2756 | #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY)) | |
e690ca94 KS |
2757 | error ("Network servers not supported"); |
2758 | #else | |
2759 | is_server = 1; | |
2ccf3102 KS |
2760 | if (INTEGERP (tem)) |
2761 | backlog = XINT (tem); | |
e690ca94 KS |
2762 | #endif |
2763 | } | |
2764 | ||
2765 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2766 | QCaddress = is_server ? QClocal : QCremote; | |
2767 | ||
2768 | /* :wait BOOL */ | |
2769 | if (!is_server && socktype == SOCK_STREAM | |
2770 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) | |
2771 | { | |
2772 | #ifndef NON_BLOCKING_CONNECT | |
2773 | error ("Non-blocking connect not supported"); | |
2774 | #else | |
2775 | is_non_blocking_client = 1; | |
2776 | #endif | |
2777 | } | |
2778 | ||
2779 | name = Fplist_get (contact, QCname); | |
2780 | buffer = Fplist_get (contact, QCbuffer); | |
2781 | filter = Fplist_get (contact, QCfilter); | |
2782 | sentinel = Fplist_get (contact, QCsentinel); | |
2783 | ||
b7826503 | 2784 | CHECK_STRING (name); |
e690ca94 KS |
2785 | |
2786 | #ifdef TERM | |
2787 | /* Let's handle TERM before things get complicated ... */ | |
2788 | host = Fplist_get (contact, QChost); | |
b7826503 | 2789 | CHECK_STRING (host); |
177c0ea7 | 2790 | |
e690ca94 KS |
2791 | service = Fplist_get (contact, QCservice); |
2792 | if (INTEGERP (service)) | |
2793 | port = htons ((unsigned short) XINT (service)); | |
2794 | else | |
2795 | { | |
2796 | struct servent *svc_info; | |
2797 | CHECK_STRING (service); | |
d5db4077 | 2798 | svc_info = getservbyname (SDATA (service), "tcp"); |
e690ca94 | 2799 | if (svc_info == 0) |
d5db4077 | 2800 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2801 | port = svc_info->s_port; |
2802 | } | |
2803 | ||
2804 | s = connect_server (0); | |
2805 | if (s < 0) | |
2806 | report_file_error ("error creating socket", Fcons (name, Qnil)); | |
d5db4077 | 2807 | send_command (s, C_PORT, 0, "%s:%d", SDATA (host), ntohs (port)); |
e690ca94 KS |
2808 | send_command (s, C_DUMB, 1, 0); |
2809 | ||
2810 | #else /* not TERM */ | |
2811 | ||
2812 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ | |
2813 | ai.ai_socktype = socktype; | |
2814 | ai.ai_protocol = 0; | |
2815 | ai.ai_next = NULL; | |
2816 | res = &ai; | |
a319f7c1 | 2817 | |
e690ca94 KS |
2818 | /* :local ADDRESS or :remote ADDRESS */ |
2819 | address = Fplist_get (contact, QCaddress); | |
2820 | if (!NILP (address)) | |
a319f7c1 | 2821 | { |
e690ca94 KS |
2822 | host = service = Qnil; |
2823 | ||
2824 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2825 | error ("Malformed :address"); | |
2826 | ai.ai_family = family; | |
2827 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2828 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2829 | goto open_socket; | |
a319f7c1 | 2830 | } |
e690ca94 KS |
2831 | |
2832 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2833 | tem = Fplist_get (contact, QCfamily); | |
2834 | if (INTEGERP (tem)) | |
2835 | family = XINT (tem); | |
a319f7c1 KH |
2836 | else |
2837 | { | |
e690ca94 KS |
2838 | if (NILP (tem)) |
2839 | family = AF_INET; | |
2840 | #ifdef HAVE_LOCAL_SOCKETS | |
2841 | else if (EQ (tem, Qlocal)) | |
2842 | family = AF_LOCAL; | |
2843 | #endif | |
a319f7c1 | 2844 | } |
e690ca94 KS |
2845 | if (family < 0) |
2846 | error ("Unknown address family"); | |
2847 | ai.ai_family = family; | |
2848 | ||
2849 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2850 | service = Fplist_get (contact, QCservice); | |
2851 | ||
2852 | #ifdef HAVE_LOCAL_SOCKETS | |
2853 | if (family == AF_LOCAL) | |
d0d6b7c5 | 2854 | { |
e690ca94 KS |
2855 | /* Host is not used. */ |
2856 | host = Qnil; | |
b7826503 | 2857 | CHECK_STRING (service); |
e690ca94 KS |
2858 | bzero (&address_un, sizeof address_un); |
2859 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 2860 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
2861 | ai.ai_addr = (struct sockaddr *) &address_un; |
2862 | ai.ai_addrlen = sizeof address_un; | |
2863 | goto open_socket; | |
d0d6b7c5 | 2864 | } |
e690ca94 | 2865 | #endif |
a319f7c1 | 2866 | |
e690ca94 KS |
2867 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
2868 | host = Fplist_get (contact, QChost); | |
2869 | if (!NILP (host)) | |
2870 | { | |
2871 | if (EQ (host, Qlocal)) | |
2872 | host = build_string ("localhost"); | |
2873 | CHECK_STRING (host); | |
2874 | } | |
d0d6b7c5 | 2875 | |
798b64bb KH |
2876 | /* Slow down polling to every ten seconds. |
2877 | Some kernels have a bug which causes retrying connect to fail | |
2878 | after a connect. Polling can interfere with gethostbyname too. */ | |
2879 | #ifdef POLL_FOR_INPUT | |
e690ca94 KS |
2880 | if (socktype == SOCK_STREAM) |
2881 | { | |
2882 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
2883 | bind_polling_period (10); | |
2884 | } | |
798b64bb KH |
2885 | #endif |
2886 | ||
a319f7c1 | 2887 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2888 | /* If we have a host, use getaddrinfo to resolve both host and service. |
2889 | Otherwise, use getservbyname to lookup the service. */ | |
2890 | if (!NILP (host)) | |
2891 | { | |
2892 | ||
2893 | /* SERVICE can either be a string or int. | |
2894 | Convert to a C string for later use by getaddrinfo. */ | |
2895 | if (EQ (service, Qt)) | |
2896 | portstring = "0"; | |
2897 | else if (INTEGERP (service)) | |
2898 | { | |
2899 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
2900 | portstring = portbuf; | |
2901 | } | |
2902 | else | |
2903 | { | |
2904 | CHECK_STRING (service); | |
d5db4077 | 2905 | portstring = SDATA (service); |
e690ca94 KS |
2906 | } |
2907 | ||
2908 | immediate_quit = 1; | |
2909 | QUIT; | |
2910 | memset (&hints, 0, sizeof (hints)); | |
2911 | hints.ai_flags = 0; | |
2912 | hints.ai_family = NILP (Fplist_member (contact, QCfamily)) ? AF_UNSPEC : family; | |
2913 | hints.ai_socktype = socktype; | |
2914 | hints.ai_protocol = 0; | |
d5db4077 | 2915 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 2916 | if (ret) |
f6270f62 | 2917 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 2918 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 2919 | #else |
d5db4077 | 2920 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 2921 | #endif |
e690ca94 | 2922 | immediate_quit = 0; |
a319f7c1 | 2923 | |
e690ca94 KS |
2924 | goto open_socket; |
2925 | } | |
2926 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 2927 | |
e690ca94 KS |
2928 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
2929 | has been specified (e.g. for a local server process). */ | |
2930 | ||
2931 | if (EQ (service, Qt)) | |
2932 | port = 0; | |
2933 | else if (INTEGERP (service)) | |
2934 | port = htons ((unsigned short) XINT (service)); | |
2935 | else | |
616da37c | 2936 | { |
e690ca94 KS |
2937 | struct servent *svc_info; |
2938 | CHECK_STRING (service); | |
177c0ea7 | 2939 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
2940 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
2941 | if (svc_info == 0) | |
d5db4077 | 2942 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2943 | port = svc_info->s_port; |
2944 | } | |
2945 | ||
2946 | bzero (&address_in, sizeof address_in); | |
2947 | address_in.sin_family = family; | |
2948 | address_in.sin_addr.s_addr = INADDR_ANY; | |
2949 | address_in.sin_port = port; | |
2950 | ||
2951 | #ifndef HAVE_GETADDRINFO | |
2952 | if (!NILP (host)) | |
2953 | { | |
2954 | struct hostent *host_info_ptr; | |
2955 | ||
2956 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
2957 | as it may `hang' emacs for a very long time. */ | |
5d6c2aa3 RS |
2958 | immediate_quit = 1; |
2959 | QUIT; | |
d5db4077 | 2960 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 2961 | immediate_quit = 0; |
177c0ea7 | 2962 | |
e690ca94 KS |
2963 | if (host_info_ptr) |
2964 | { | |
2965 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
2966 | host_info_ptr->h_length); | |
2967 | family = host_info_ptr->h_addrtype; | |
2968 | address_in.sin_family = family; | |
2969 | } | |
2970 | else | |
2971 | /* Attempt to interpret host as numeric inet address */ | |
2972 | { | |
2973 | IN_ADDR numeric_addr; | |
d5db4077 | 2974 | numeric_addr = inet_addr ((char *) SDATA (host)); |
e690ca94 | 2975 | if (NUMERIC_ADDR_ERROR) |
d5db4077 | 2976 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 2977 | |
e690ca94 KS |
2978 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
2979 | sizeof (address_in.sin_addr)); | |
2980 | } | |
d0d6b7c5 | 2981 | |
e690ca94 | 2982 | } |
dd2a17ab | 2983 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 2984 | |
e690ca94 KS |
2985 | ai.ai_family = family; |
2986 | ai.ai_addr = (struct sockaddr *) &address_in; | |
2987 | ai.ai_addrlen = sizeof address_in; | |
2988 | ||
2989 | open_socket: | |
2990 | ||
2991 | /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR) | |
2992 | when connect is interrupted. So let's not let it get interrupted. | |
2993 | Note we do not turn off polling, because polling is only used | |
2994 | when not interrupt_input, and thus not normally used on the systems | |
2995 | which have this bug. On systems which use polling, there's no way | |
2996 | to quit if polling is turned off. */ | |
2997 | if (interrupt_input | |
2998 | && !is_server && socktype == SOCK_STREAM) | |
2999 | { | |
3000 | /* Comment from KFS: The original open-network-stream code | |
3001 | didn't unwind protect this, but it seems like the proper | |
3002 | thing to do. In any case, I don't see how it could harm to | |
3003 | do this -- and it makes cleanup (using unbind_to) easier. */ | |
3004 | record_unwind_protect (unwind_request_sigio, Qnil); | |
3005 | unrequest_sigio (); | |
3006 | } | |
3007 | ||
dd2a17ab | 3008 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3009 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3010 | s = -1; |
457a9bee | 3011 | |
dd2a17ab KS |
3012 | for (lres = res; lres; lres = lres->ai_next) |
3013 | { | |
2ccf3102 KS |
3014 | int optn, optbits; |
3015 | ||
dd2a17ab KS |
3016 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3017 | if (s < 0) | |
3018 | { | |
3019 | xerrno = errno; | |
3020 | continue; | |
3021 | } | |
0f2ee0c1 | 3022 | |
e690ca94 KS |
3023 | #ifdef DATAGRAM_SOCKETS |
3024 | if (!is_server && socktype == SOCK_DGRAM) | |
3025 | break; | |
3026 | #endif /* DATAGRAM_SOCKETS */ | |
3027 | ||
dd2a17ab | 3028 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3029 | if (is_non_blocking_client) |
dd2a17ab KS |
3030 | { |
3031 | #ifdef O_NONBLOCK | |
3032 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3033 | #else | |
3034 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3035 | #endif | |
3036 | if (ret < 0) | |
3037 | { | |
3038 | xerrno = errno; | |
3039 | emacs_close (s); | |
3040 | s = -1; | |
3041 | continue; | |
3042 | } | |
3043 | } | |
3044 | #endif | |
177c0ea7 | 3045 | |
dd2a17ab | 3046 | /* Make us close S if quit. */ |
dd2a17ab KS |
3047 | record_unwind_protect (close_file_unwind, make_number (s)); |
3048 | ||
2ccf3102 KS |
3049 | /* Parse network options in the arg list. |
3050 | We simply ignore anything which isn't a known option (including other keywords). | |
3051 | An error is signalled if setting a known option fails. */ | |
3052 | for (optn = optbits = 0; optn < nargs-1; optn += 2) | |
3053 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3054 | ||
e690ca94 KS |
3055 | if (is_server) |
3056 | { | |
3057 | /* Configure as a server socket. */ | |
2ccf3102 KS |
3058 | |
3059 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3060 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3061 | #ifdef HAVE_LOCAL_SOCKETS |
3062 | if (family != AF_LOCAL) | |
3063 | #endif | |
2ccf3102 KS |
3064 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3065 | { | |
3066 | int optval = 1; | |
3067 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
7c402969 | 3068 | report_file_error ("Cannot set reuse option on server socket", Qnil); |
2ccf3102 | 3069 | } |
177c0ea7 | 3070 | |
e690ca94 KS |
3071 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3072 | report_file_error ("Cannot bind server socket", Qnil); | |
3073 | ||
3074 | #ifdef HAVE_GETSOCKNAME | |
3075 | if (EQ (service, Qt)) | |
3076 | { | |
3077 | struct sockaddr_in sa1; | |
3078 | int len1 = sizeof (sa1); | |
3079 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3080 | { | |
3081 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3082 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3083 | contact = Fplist_put (contact, QCservice, service); |
3084 | } | |
3085 | } | |
3086 | #endif | |
3087 | ||
2ccf3102 | 3088 | if (socktype == SOCK_STREAM && listen (s, backlog)) |
e690ca94 KS |
3089 | report_file_error ("Cannot listen on server socket", Qnil); |
3090 | ||
3091 | break; | |
3092 | } | |
3093 | ||
3094 | retry_connect: | |
dd2a17ab KS |
3095 | |
3096 | immediate_quit = 1; | |
3097 | QUIT; | |
3098 | ||
3099 | /* This turns off all alarm-based interrupts; the | |
3100 | bind_polling_period call above doesn't always turn all the | |
3101 | short-interval ones off, especially if interrupt_input is | |
3102 | set. | |
3103 | ||
3104 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3105 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3106 | |
3107 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3108 | ||
f40f9848 | 3109 | turn_on_atimers (0); |
dd2a17ab KS |
3110 | |
3111 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3112 | xerrno = errno; | |
3113 | ||
f40f9848 | 3114 | turn_on_atimers (1); |
dd2a17ab KS |
3115 | |
3116 | if (ret == 0 || xerrno == EISCONN) | |
3117 | { | |
dd2a17ab KS |
3118 | /* The unwind-protect will be discarded afterwards. |
3119 | Likewise for immediate_quit. */ | |
3120 | break; | |
3121 | } | |
3122 | ||
3123 | #ifdef NON_BLOCKING_CONNECT | |
3124 | #ifdef EINPROGRESS | |
e690ca94 | 3125 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3126 | break; |
3127 | #else | |
3128 | #ifdef EWOULDBLOCK | |
e690ca94 | 3129 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3130 | break; |
3131 | #endif | |
3132 | #endif | |
3133 | #endif | |
e333e864 | 3134 | |
0f2ee0c1 RS |
3135 | immediate_quit = 0; |
3136 | ||
dd2a17ab | 3137 | if (xerrno == EINTR) |
e690ca94 | 3138 | goto retry_connect; |
dd2a17ab | 3139 | if (xerrno == EADDRINUSE && retry < 20) |
e333e864 | 3140 | { |
4590788a RS |
3141 | /* A delay here is needed on some FreeBSD systems, |
3142 | and it is harmless, since this retrying takes time anyway | |
3143 | and should be infrequent. */ | |
3144 | Fsleep_for (make_number (1), Qnil); | |
e333e864 | 3145 | retry++; |
e690ca94 | 3146 | goto retry_connect; |
e333e864 RS |
3147 | } |
3148 | ||
dd2a17ab | 3149 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3150 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3151 | emacs_close (s); |
dd2a17ab KS |
3152 | s = -1; |
3153 | } | |
457a9bee | 3154 | |
e690ca94 KS |
3155 | if (s >= 0) |
3156 | { | |
3157 | #ifdef DATAGRAM_SOCKETS | |
3158 | if (socktype == SOCK_DGRAM) | |
3159 | { | |
3160 | if (datagram_address[s].sa) | |
3161 | abort (); | |
3162 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3163 | datagram_address[s].len = lres->ai_addrlen; | |
3164 | if (is_server) | |
3165 | { | |
3166 | Lisp_Object remote; | |
3167 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3168 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3169 | { | |
3170 | int rfamily, rlen; | |
3171 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3172 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3173 | conv_lisp_to_sockaddr (rfamily, remote, | |
3174 | datagram_address[s].sa, rlen); | |
3175 | } | |
3176 | } | |
3177 | else | |
3178 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3179 | } | |
3180 | #endif | |
177c0ea7 | 3181 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3182 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3183 | #ifdef HAVE_GETSOCKNAME |
3184 | if (!is_server) | |
3185 | { | |
3186 | struct sockaddr_in sa1; | |
3187 | int len1 = sizeof (sa1); | |
3188 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3189 | contact = Fplist_put (contact, QClocal, | |
3190 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3191 | } | |
3192 | #endif | |
e690ca94 KS |
3193 | } |
3194 | ||
dd2a17ab | 3195 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3196 | if (res != &ai) |
3197 | freeaddrinfo (res); | |
dd2a17ab KS |
3198 | #endif |
3199 | ||
e690ca94 KS |
3200 | immediate_quit = 0; |
3201 | ||
3202 | /* Discard the unwind protect for closing S, if any. */ | |
3203 | specpdl_ptr = specpdl + count1; | |
3204 | ||
3205 | /* Unwind bind_polling_period and request_sigio. */ | |
3206 | unbind_to (count, Qnil); | |
3207 | ||
dd2a17ab KS |
3208 | if (s < 0) |
3209 | { | |
dd2a17ab KS |
3210 | /* If non-blocking got this far - and failed - assume non-blocking is |
3211 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3212 | the normal blocking calls to open-network-stream handles this error |
3213 | better. */ | |
3214 | if (is_non_blocking_client) | |
dd2a17ab | 3215 | return Qnil; |
dd2a17ab | 3216 | |
d0d6b7c5 | 3217 | errno = xerrno; |
e690ca94 KS |
3218 | if (is_server) |
3219 | report_file_error ("make server process failed", contact); | |
3220 | else | |
3221 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3222 | } |
44ade2e9 | 3223 | |
e690ca94 | 3224 | #endif /* not TERM */ |
d0d6b7c5 JB |
3225 | |
3226 | inch = s; | |
59f23005 | 3227 | outch = s; |
d0d6b7c5 JB |
3228 | |
3229 | if (!NILP (buffer)) | |
3230 | buffer = Fget_buffer_create (buffer); | |
3231 | proc = make_process (name); | |
3232 | ||
3233 | chan_process[inch] = proc; | |
3234 | ||
3235 | #ifdef O_NONBLOCK | |
3236 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3237 | #else | |
3238 | #ifdef O_NDELAY | |
3239 | fcntl (inch, F_SETFL, O_NDELAY); | |
3240 | #endif | |
3241 | #endif | |
3242 | ||
e690ca94 KS |
3243 | p = XPROCESS (proc); |
3244 | ||
3245 | p->childp = contact; | |
faa7db08 | 3246 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
177c0ea7 | 3247 | |
e690ca94 KS |
3248 | p->buffer = buffer; |
3249 | p->sentinel = sentinel; | |
3250 | p->filter = filter; | |
03f04413 KH |
3251 | p->filter_multibyte = buffer_defaults.enable_multibyte_characters; |
3252 | /* Override the above only if :filter-multibyte is specified. */ | |
3253 | if (! NILP (Fplist_member (contact, QCfilter_multibyte))) | |
3254 | p->filter_multibyte = Fplist_get (contact, QCfilter_multibyte); | |
e690ca94 KS |
3255 | p->log = Fplist_get (contact, QClog); |
3256 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
3257 | p->kill_without_query = Qt; | |
3258 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) | |
3259 | p->command = Qt; | |
3260 | p->pid = Qnil; | |
3261 | XSETINT (p->infd, inch); | |
3262 | XSETINT (p->outfd, outch); | |
3263 | if (is_server && socktype == SOCK_STREAM) | |
3264 | p->status = Qlisten; | |
dd2a17ab KS |
3265 | |
3266 | #ifdef NON_BLOCKING_CONNECT | |
e690ca94 | 3267 | if (is_non_blocking_client) |
dd2a17ab KS |
3268 | { |
3269 | /* We may get here if connect did succeed immediately. However, | |
3270 | in that case, we still need to signal this like a non-blocking | |
3271 | connection. */ | |
e690ca94 | 3272 | p->status = Qconnect; |
dd2a17ab KS |
3273 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3274 | { | |
3275 | FD_SET (inch, &connect_wait_mask); | |
3276 | num_pending_connects++; | |
3277 | } | |
3278 | } | |
3279 | else | |
3280 | #endif | |
e690ca94 KS |
3281 | /* A server may have a client filter setting of Qt, but it must |
3282 | still listen for incoming connects unless it is stopped. */ | |
3283 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3284 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3285 | { |
3286 | FD_SET (inch, &input_wait_mask); | |
3287 | FD_SET (inch, &non_keyboard_wait_mask); | |
3288 | } | |
3289 | ||
7d0e672e RS |
3290 | if (inch > max_process_desc) |
3291 | max_process_desc = inch; | |
d0d6b7c5 | 3292 | |
e690ca94 KS |
3293 | tem = Fplist_member (contact, QCcoding); |
3294 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3295 | tem = Qnil; /* No error message (too late!). */ | |
3296 | ||
67918941 RS |
3297 | { |
3298 | /* Setup coding systems for communicating with the network stream. */ | |
3299 | struct gcpro gcpro1; | |
3300 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3301 | Lisp_Object coding_systems = Qt; | |
3302 | Lisp_Object args[5], val; | |
3303 | ||
e690ca94 | 3304 | if (!NILP (tem)) |
2ccf3102 KS |
3305 | { |
3306 | val = XCAR (XCDR (tem)); | |
3307 | if (CONSP (val)) | |
3308 | val = XCAR (val); | |
3309 | } | |
e690ca94 | 3310 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3311 | val = Vcoding_system_for_read; |
41d03b9a GM |
3312 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3313 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3314 | /* We dare not decode end-of-line format by setting VAL to |
3315 | Qraw_text, because the existing Emacs Lisp libraries | |
3316 | assume that they receive bare code including a sequene of | |
3317 | CR LF. */ | |
3318 | val = Qnil; | |
3319 | else | |
3320 | { | |
991234f0 KS |
3321 | if (NILP (host) || NILP (service)) |
3322 | coding_systems = Qnil; | |
3323 | else | |
3324 | { | |
3325 | args[0] = Qopen_network_stream, args[1] = name, | |
3326 | args[2] = buffer, args[3] = host, args[4] = service; | |
3327 | GCPRO1 (proc); | |
3328 | coding_systems = Ffind_operation_coding_system (5, args); | |
3329 | UNGCPRO; | |
3330 | } | |
67918941 | 3331 | if (CONSP (coding_systems)) |
70949dac | 3332 | val = XCAR (coding_systems); |
67918941 | 3333 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3334 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3335 | else |
3336 | val = Qnil; | |
3337 | } | |
e690ca94 | 3338 | p->decode_coding_system = val; |
0fa1789e | 3339 | |
e690ca94 | 3340 | if (!NILP (tem)) |
2ccf3102 KS |
3341 | { |
3342 | val = XCAR (XCDR (tem)); | |
3343 | if (CONSP (val)) | |
3344 | val = XCDR (val); | |
3345 | } | |
e690ca94 | 3346 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3347 | val = Vcoding_system_for_write; |
3348 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3349 | val = Qnil; | |
3350 | else | |
3351 | { | |
3352 | if (EQ (coding_systems, Qt)) | |
3353 | { | |
991234f0 KS |
3354 | if (NILP (host) || NILP (service)) |
3355 | coding_systems = Qnil; | |
3356 | else | |
3357 | { | |
3358 | args[0] = Qopen_network_stream, args[1] = name, | |
3359 | args[2] = buffer, args[3] = host, args[4] = service; | |
3360 | GCPRO1 (proc); | |
3361 | coding_systems = Ffind_operation_coding_system (5, args); | |
3362 | UNGCPRO; | |
3363 | } | |
67918941 RS |
3364 | } |
3365 | if (CONSP (coding_systems)) | |
70949dac | 3366 | val = XCDR (coding_systems); |
67918941 | 3367 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3368 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3369 | else |
3370 | val = Qnil; | |
3371 | } | |
e690ca94 | 3372 | p->encode_coding_system = val; |
67918941 | 3373 | } |
03f04413 | 3374 | setup_process_coding_systems (proc); |
0fa1789e | 3375 | |
e690ca94 KS |
3376 | p->decoding_buf = make_uninit_string (0); |
3377 | p->decoding_carryover = make_number (0); | |
3378 | p->encoding_buf = make_uninit_string (0); | |
3379 | p->encoding_carryover = make_number (0); | |
0fa1789e | 3380 | |
e690ca94 KS |
3381 | p->inherit_coding_system_flag |
3382 | = (!NILP (tem) || NILP (buffer) || !inherit_process_coding_system | |
aa91317a | 3383 | ? Qnil : Qt); |
52a1b894 | 3384 | |
d0d6b7c5 JB |
3385 | UNGCPRO; |
3386 | return proc; | |
3387 | } | |
3388 | #endif /* HAVE_SOCKETS */ | |
3389 | ||
161933c7 | 3390 | \f |
b8c7fd71 | 3391 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
161933c7 KS |
3392 | |
3393 | #ifdef SIOCGIFCONF | |
3394 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3395 | doc: /* Return an alist of all network interfaces and their network address. | |
3396 | Each element is a cons, the car of which is a string containing the | |
3397 | interface name, and the cdr is the network address in internal | |
e1283999 | 3398 | format; see the description of ADDRESS in `make-network-process'. */) |
161933c7 KS |
3399 | () |
3400 | { | |
3401 | struct ifconf ifconf; | |
3402 | struct ifreq *ifreqs = NULL; | |
3403 | int ifaces = 0; | |
3404 | int buf_size, s; | |
3405 | Lisp_Object res; | |
3406 | ||
3407 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3408 | if (s < 0) | |
3409 | return Qnil; | |
3410 | ||
3411 | again: | |
3412 | ifaces += 25; | |
3413 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3414 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3415 | if (!ifreqs) | |
3416 | { | |
3417 | close (s); | |
3418 | return Qnil; | |
3419 | } | |
3420 | ||
3421 | ifconf.ifc_len = buf_size; | |
3422 | ifconf.ifc_req = ifreqs; | |
3423 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3424 | { | |
3425 | close (s); | |
3426 | return Qnil; | |
3427 | } | |
3428 | ||
3429 | if (ifconf.ifc_len == buf_size) | |
3430 | goto again; | |
3431 | ||
3432 | close (s); | |
3433 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3434 | ||
3435 | res = Qnil; | |
3436 | while (--ifaces >= 0) | |
3437 | { | |
3438 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3439 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3440 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3441 | continue; | |
3442 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3443 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3444 | res = Fcons (Fcons (build_string (namebuf), | |
3445 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3446 | sizeof (struct sockaddr))), | |
3447 | res); | |
3448 | } | |
3449 | ||
3450 | return res; | |
3451 | } | |
b8c7fd71 | 3452 | #endif /* SIOCGIFCONF */ |
161933c7 KS |
3453 | |
3454 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3455 | ||
3456 | struct ifflag_def { | |
3457 | int flag_bit; | |
3458 | char *flag_sym; | |
3459 | }; | |
3460 | ||
3461 | static struct ifflag_def ifflag_table[] = { | |
3462 | #ifdef IFF_UP | |
3463 | { IFF_UP, "up" }, | |
3464 | #endif | |
3465 | #ifdef IFF_BROADCAST | |
3466 | { IFF_BROADCAST, "broadcast" }, | |
3467 | #endif | |
3468 | #ifdef IFF_DEBUG | |
3469 | { IFF_DEBUG, "debug" }, | |
3470 | #endif | |
3471 | #ifdef IFF_LOOPBACK | |
3472 | { IFF_LOOPBACK, "loopback" }, | |
3473 | #endif | |
3474 | #ifdef IFF_POINTOPOINT | |
3475 | { IFF_POINTOPOINT, "pointopoint" }, | |
3476 | #endif | |
3477 | #ifdef IFF_RUNNING | |
3478 | { IFF_RUNNING, "running" }, | |
3479 | #endif | |
3480 | #ifdef IFF_NOARP | |
3481 | { IFF_NOARP, "noarp" }, | |
3482 | #endif | |
3483 | #ifdef IFF_PROMISC | |
3484 | { IFF_PROMISC, "promisc" }, | |
3485 | #endif | |
3486 | #ifdef IFF_NOTRAILERS | |
3487 | { IFF_NOTRAILERS, "notrailers" }, | |
3488 | #endif | |
3489 | #ifdef IFF_ALLMULTI | |
3490 | { IFF_ALLMULTI, "allmulti" }, | |
3491 | #endif | |
3492 | #ifdef IFF_MASTER | |
3493 | { IFF_MASTER, "master" }, | |
3494 | #endif | |
3495 | #ifdef IFF_SLAVE | |
3496 | { IFF_SLAVE, "slave" }, | |
3497 | #endif | |
3498 | #ifdef IFF_MULTICAST | |
3499 | { IFF_MULTICAST, "multicast" }, | |
3500 | #endif | |
3501 | #ifdef IFF_PORTSEL | |
3502 | { IFF_PORTSEL, "portsel" }, | |
3503 | #endif | |
3504 | #ifdef IFF_AUTOMEDIA | |
3505 | { IFF_AUTOMEDIA, "automedia" }, | |
3506 | #endif | |
3507 | #ifdef IFF_DYNAMIC | |
3508 | { IFF_DYNAMIC, "dynamic" }, | |
3509 | #endif | |
3510 | { 0, 0 } | |
3511 | }; | |
3512 | ||
2ccf3102 | 3513 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, |
161933c7 KS |
3514 | doc: /* Return information about network interface named IFNAME. |
3515 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3516 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3517 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3518 | FLAGS is the current flags of the interface. */) | |
3519 | (ifname) | |
3520 | Lisp_Object ifname; | |
3521 | { | |
3522 | struct ifreq rq; | |
3523 | Lisp_Object res = Qnil; | |
3524 | Lisp_Object elt; | |
3525 | int s; | |
3526 | int any = 0; | |
3527 | ||
3528 | CHECK_STRING (ifname); | |
3529 | ||
3530 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
3531 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
3532 | ||
3533 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3534 | if (s < 0) | |
3535 | return Qnil; | |
3536 | ||
3537 | elt = Qnil; | |
559c53b3 | 3538 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) |
161933c7 KS |
3539 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3540 | { | |
3541 | int flags = rq.ifr_flags; | |
3542 | struct ifflag_def *fp; | |
3543 | int fnum; | |
3544 | ||
3545 | any++; | |
3546 | for (fp = ifflag_table; flags != 0 && fp; fp++) | |
3547 | { | |
3548 | if (flags & fp->flag_bit) | |
3549 | { | |
3550 | elt = Fcons (intern (fp->flag_sym), elt); | |
3551 | flags -= fp->flag_bit; | |
3552 | } | |
3553 | } | |
3554 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3555 | { | |
3556 | if (flags & (1 << fnum)) | |
3557 | { | |
3558 | elt = Fcons (make_number (fnum), elt); | |
3559 | } | |
3560 | } | |
3561 | } | |
3562 | #endif | |
3563 | res = Fcons (elt, res); | |
3564 | ||
3565 | elt = Qnil; | |
559c53b3 | 3566 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) |
161933c7 KS |
3567 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3568 | { | |
b8c7fd71 | 3569 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); |
161933c7 KS |
3570 | register struct Lisp_Vector *p = XVECTOR (hwaddr); |
3571 | int n; | |
3572 | ||
3573 | any++; | |
3574 | for (n = 0; n < 6; n++) | |
3575 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
e1283999 | 3576 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); |
161933c7 KS |
3577 | } |
3578 | #endif | |
3579 | res = Fcons (elt, res); | |
3580 | ||
3581 | elt = Qnil; | |
b8c7fd71 | 3582 | #if defined(SIOCGIFNETMASK) && defined(ifr_netmask) |
161933c7 KS |
3583 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3584 | { | |
3585 | any++; | |
3586 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); | |
3587 | } | |
3588 | #endif | |
3589 | res = Fcons (elt, res); | |
3590 | ||
3591 | elt = Qnil; | |
559c53b3 | 3592 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
161933c7 KS |
3593 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3594 | { | |
3595 | any++; | |
3596 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3597 | } | |
3598 | #endif | |
3599 | res = Fcons (elt, res); | |
3600 | ||
3601 | elt = Qnil; | |
559c53b3 | 3602 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) |
161933c7 KS |
3603 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3604 | { | |
3605 | any++; | |
3606 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3607 | } | |
3608 | #endif | |
3609 | res = Fcons (elt, res); | |
3610 | ||
3611 | close (s); | |
3612 | ||
3613 | return any ? res : Qnil; | |
3614 | } | |
3615 | #endif | |
3616 | #endif /* HAVE_SOCKETS */ | |
3617 | ||
6b53bb85 | 3618 | void |
d0d6b7c5 JB |
3619 | deactivate_process (proc) |
3620 | Lisp_Object proc; | |
3621 | { | |
3622 | register int inchannel, outchannel; | |
3623 | register struct Lisp_Process *p = XPROCESS (proc); | |
3624 | ||
a9f2c884 RS |
3625 | inchannel = XINT (p->infd); |
3626 | outchannel = XINT (p->outfd); | |
d0d6b7c5 | 3627 | |
2d942bfa KS |
3628 | #ifdef ADAPTIVE_READ_BUFFERING |
3629 | if (XINT (p->read_output_delay) > 0) | |
3630 | { | |
3631 | if (--process_output_delay_count < 0) | |
3632 | process_output_delay_count = 0; | |
3633 | XSETINT (p->read_output_delay, 0); | |
3634 | p->read_output_skip = Qnil; | |
3635 | } | |
3636 | #endif | |
3637 | ||
a9f2c884 | 3638 | if (inchannel >= 0) |
d0d6b7c5 JB |
3639 | { |
3640 | /* Beware SIGCHLD hereabouts. */ | |
3641 | flush_pending_output (inchannel); | |
3642 | #ifdef VMS | |
3643 | { | |
3644 | VMS_PROC_STUFF *get_vms_process_pointer (), *vs; | |
3645 | sys$dassgn (outchannel); | |
c6c6865d | 3646 | vs = get_vms_process_pointer (p->pid); |
d0d6b7c5 JB |
3647 | if (vs) |
3648 | give_back_vms_process_stuff (vs); | |
3649 | } | |
3650 | #else | |
68c45bf0 | 3651 | emacs_close (inchannel); |
a9f2c884 | 3652 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3653 | emacs_close (outchannel); |
d0d6b7c5 JB |
3654 | #endif |
3655 | ||
1d056e64 KH |
3656 | XSETINT (p->infd, -1); |
3657 | XSETINT (p->outfd, -1); | |
e690ca94 KS |
3658 | #ifdef DATAGRAM_SOCKETS |
3659 | if (DATAGRAM_CHAN_P (inchannel)) | |
3660 | { | |
3661 | xfree (datagram_address[inchannel].sa); | |
3662 | datagram_address[inchannel].sa = 0; | |
3663 | datagram_address[inchannel].len = 0; | |
3664 | } | |
3665 | #endif | |
d0d6b7c5 JB |
3666 | chan_process[inchannel] = Qnil; |
3667 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3668 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
dd2a17ab KS |
3669 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3670 | { | |
3671 | FD_CLR (inchannel, &connect_wait_mask); | |
3672 | if (--num_pending_connects < 0) | |
3673 | abort (); | |
3674 | } | |
7d0e672e RS |
3675 | if (inchannel == max_process_desc) |
3676 | { | |
3677 | int i; | |
3678 | /* We just closed the highest-numbered process input descriptor, | |
3679 | so recompute the highest-numbered one now. */ | |
3680 | max_process_desc = 0; | |
3681 | for (i = 0; i < MAXDESC; i++) | |
3682 | if (!NILP (chan_process[i])) | |
3683 | max_process_desc = i; | |
3684 | } | |
d0d6b7c5 JB |
3685 | } |
3686 | } | |
3687 | ||
3688 | /* Close all descriptors currently in use for communication | |
3689 | with subprocess. This is used in a newly-forked subprocess | |
3690 | to get rid of irrelevant descriptors. */ | |
3691 | ||
6b53bb85 | 3692 | void |
d0d6b7c5 JB |
3693 | close_process_descs () |
3694 | { | |
e98d950b | 3695 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
3696 | int i; |
3697 | for (i = 0; i < MAXDESC; i++) | |
3698 | { | |
3699 | Lisp_Object process; | |
3700 | process = chan_process[i]; | |
3701 | if (!NILP (process)) | |
3702 | { | |
a9f2c884 RS |
3703 | int in = XINT (XPROCESS (process)->infd); |
3704 | int out = XINT (XPROCESS (process)->outfd); | |
3705 | if (in >= 0) | |
68c45bf0 | 3706 | emacs_close (in); |
a9f2c884 | 3707 | if (out >= 0 && in != out) |
68c45bf0 | 3708 | emacs_close (out); |
d0d6b7c5 JB |
3709 | } |
3710 | } | |
e98d950b | 3711 | #endif |
d0d6b7c5 JB |
3712 | } |
3713 | \f | |
3714 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
fdb82f93 PJ |
3715 | 0, 3, 0, |
3716 | doc: /* Allow any pending output from subprocesses to be read by Emacs. | |
3717 | It is read into the process' buffers or given to their filter functions. | |
3718 | Non-nil arg PROCESS means do not return until some output has been received | |
3719 | from PROCESS. | |
3720 | Non-nil second arg TIMEOUT and third arg TIMEOUT-MSECS are number of | |
3721 | seconds and microseconds to wait; return after that much time whether | |
3722 | or not there is input. | |
3723 | Return non-nil iff we received any output before the timeout expired. */) | |
3724 | (process, timeout, timeout_msecs) | |
4ee3e309 | 3725 | register Lisp_Object process, timeout, timeout_msecs; |
d0d6b7c5 JB |
3726 | { |
3727 | int seconds; | |
3728 | int useconds; | |
3729 | ||
0748d150 | 3730 | if (! NILP (process)) |
b7826503 | 3731 | CHECK_PROCESS (process); |
0748d150 | 3732 | |
d0d6b7c5 JB |
3733 | if (! NILP (timeout_msecs)) |
3734 | { | |
b7826503 | 3735 | CHECK_NUMBER (timeout_msecs); |
d0d6b7c5 | 3736 | useconds = XINT (timeout_msecs); |
bcd69aea | 3737 | if (!INTEGERP (timeout)) |
1d056e64 | 3738 | XSETINT (timeout, 0); |
d0d6b7c5 JB |
3739 | |
3740 | { | |
3741 | int carry = useconds / 1000000; | |
3742 | ||
3743 | XSETINT (timeout, XINT (timeout) + carry); | |
3744 | useconds -= carry * 1000000; | |
3745 | ||
3746 | /* I think this clause is necessary because C doesn't | |
3747 | guarantee a particular rounding direction for negative | |
3748 | integers. */ | |
3749 | if (useconds < 0) | |
3750 | { | |
3751 | XSETINT (timeout, XINT (timeout) - 1); | |
3752 | useconds += 1000000; | |
3753 | } | |
3754 | } | |
3755 | } | |
de946e5a RS |
3756 | else |
3757 | useconds = 0; | |
d0d6b7c5 JB |
3758 | |
3759 | if (! NILP (timeout)) | |
3760 | { | |
b7826503 | 3761 | CHECK_NUMBER (timeout); |
d0d6b7c5 | 3762 | seconds = XINT (timeout); |
ada9a4fd | 3763 | if (seconds < 0 || (seconds == 0 && useconds == 0)) |
d0d6b7c5 JB |
3764 | seconds = -1; |
3765 | } | |
3766 | else | |
26d7389d | 3767 | seconds = NILP (process) ? -1 : 0; |
d0d6b7c5 | 3768 | |
4ee3e309 EN |
3769 | if (NILP (process)) |
3770 | XSETFASTINT (process, 0); | |
f76475ad | 3771 | |
d0d6b7c5 | 3772 | return |
4ee3e309 | 3773 | (wait_reading_process_input (seconds, useconds, process, 0) |
d0d6b7c5 JB |
3774 | ? Qt : Qnil); |
3775 | } | |
3776 | ||
e690ca94 KS |
3777 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3778 | ||
3779 | static int connect_counter = 0; | |
3780 | ||
3781 | static void | |
3782 | server_accept_connection (server, channel) | |
3783 | Lisp_Object server; | |
3784 | int channel; | |
3785 | { | |
3786 | Lisp_Object proc, caller, name, buffer; | |
3787 | Lisp_Object contact, host, service; | |
3788 | struct Lisp_Process *ps= XPROCESS (server); | |
3789 | struct Lisp_Process *p; | |
3790 | int s; | |
3791 | union u_sockaddr { | |
3792 | struct sockaddr sa; | |
3793 | struct sockaddr_in in; | |
3794 | #ifdef HAVE_LOCAL_SOCKETS | |
3795 | struct sockaddr_un un; | |
3796 | #endif | |
3797 | } saddr; | |
3798 | int len = sizeof saddr; | |
3799 | ||
3800 | s = accept (channel, &saddr.sa, &len); | |
3801 | ||
3802 | if (s < 0) | |
3803 | { | |
3804 | int code = errno; | |
3805 | ||
3806 | if (code == EAGAIN) | |
3807 | return; | |
3808 | #ifdef EWOULDBLOCK | |
3809 | if (code == EWOULDBLOCK) | |
3810 | return; | |
3811 | #endif | |
3812 | ||
3813 | if (!NILP (ps->log)) | |
3814 | call3 (ps->log, server, Qnil, | |
3815 | concat3 (build_string ("accept failed with code"), | |
3816 | Fnumber_to_string (make_number (code)), | |
3817 | build_string ("\n"))); | |
3818 | return; | |
3819 | } | |
3820 | ||
3821 | connect_counter++; | |
3822 | ||
3823 | /* Setup a new process to handle the connection. */ | |
3824 | ||
3825 | /* Generate a unique identification of the caller, and build contact | |
3826 | information for this process. */ | |
3827 | host = Qt; | |
3828 | service = Qnil; | |
3829 | switch (saddr.sa.sa_family) | |
3830 | { | |
3831 | case AF_INET: | |
3832 | { | |
3833 | Lisp_Object args[5]; | |
3834 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
3835 | args[0] = build_string ("%d.%d.%d.%d"); | |
3836 | args[1] = make_number (*ip++); | |
3837 | args[2] = make_number (*ip++); | |
3838 | args[3] = make_number (*ip++); | |
3839 | args[4] = make_number (*ip++); | |
3840 | host = Fformat (5, args); | |
3841 | service = make_number (ntohs (saddr.in.sin_port)); | |
3842 | ||
3843 | args[0] = build_string (" <%s:%d>"); | |
3844 | args[1] = host; | |
3845 | args[2] = service; | |
3846 | caller = Fformat (3, args); | |
3847 | } | |
3848 | break; | |
3849 | ||
3850 | #ifdef HAVE_LOCAL_SOCKETS | |
3851 | case AF_LOCAL: | |
3852 | #endif | |
3853 | default: | |
3854 | caller = Fnumber_to_string (make_number (connect_counter)); | |
3855 | caller = concat3 (build_string (" <*"), caller, build_string ("*>")); | |
3856 | break; | |
3857 | } | |
3858 | ||
3859 | /* Create a new buffer name for this process if it doesn't have a | |
3860 | filter. The new buffer name is based on the buffer name or | |
3861 | process name of the server process concatenated with the caller | |
3862 | identification. */ | |
3863 | ||
3864 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
3865 | buffer = Qnil; | |
3866 | else | |
3867 | { | |
3868 | buffer = ps->buffer; | |
3869 | if (!NILP (buffer)) | |
3870 | buffer = Fbuffer_name (buffer); | |
3871 | else | |
3872 | buffer = ps->name; | |
3873 | if (!NILP (buffer)) | |
3874 | { | |
3875 | buffer = concat2 (buffer, caller); | |
3876 | buffer = Fget_buffer_create (buffer); | |
3877 | } | |
3878 | } | |
3879 | ||
3880 | /* Generate a unique name for the new server process. Combine the | |
3881 | server process name with the caller identification. */ | |
3882 | ||
3883 | name = concat2 (ps->name, caller); | |
3884 | proc = make_process (name); | |
3885 | ||
3886 | chan_process[s] = proc; | |
3887 | ||
3888 | #ifdef O_NONBLOCK | |
3889 | fcntl (s, F_SETFL, O_NONBLOCK); | |
3890 | #else | |
3891 | #ifdef O_NDELAY | |
3892 | fcntl (s, F_SETFL, O_NDELAY); | |
3893 | #endif | |
3894 | #endif | |
3895 | ||
3896 | p = XPROCESS (proc); | |
3897 | ||
3898 | /* Build new contact information for this setup. */ | |
3899 | contact = Fcopy_sequence (ps->childp); | |
3900 | contact = Fplist_put (contact, QCserver, Qnil); | |
3901 | contact = Fplist_put (contact, QChost, host); | |
3902 | if (!NILP (service)) | |
3903 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 3904 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
3905 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
3906 | #ifdef HAVE_GETSOCKNAME | |
3907 | len = sizeof saddr; | |
2185db04 | 3908 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 3909 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
3910 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
3911 | #endif | |
3912 | ||
3913 | p->childp = contact; | |
faa7db08 | 3914 | p->plist = Fcopy_sequence (ps->plist); |
ac4a7584 | 3915 | |
e690ca94 KS |
3916 | p->buffer = buffer; |
3917 | p->sentinel = ps->sentinel; | |
3918 | p->filter = ps->filter; | |
3919 | p->command = Qnil; | |
3920 | p->pid = Qnil; | |
3921 | XSETINT (p->infd, s); | |
3922 | XSETINT (p->outfd, s); | |
3923 | p->status = Qrun; | |
3924 | ||
3925 | /* Client processes for accepted connections are not stopped initially. */ | |
3926 | if (!EQ (p->filter, Qt)) | |
3927 | { | |
3928 | FD_SET (s, &input_wait_mask); | |
3929 | FD_SET (s, &non_keyboard_wait_mask); | |
3930 | } | |
3931 | ||
3932 | if (s > max_process_desc) | |
3933 | max_process_desc = s; | |
3934 | ||
177c0ea7 | 3935 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
3936 | This seems to be the proper thing to do, as the coding system |
3937 | of the new process should reflect the settings at the time the | |
3938 | server socket was opened; not the current settings. */ | |
3939 | ||
3940 | p->decode_coding_system = ps->decode_coding_system; | |
3941 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 3942 | setup_process_coding_systems (proc); |
e690ca94 KS |
3943 | |
3944 | p->decoding_buf = make_uninit_string (0); | |
3945 | p->decoding_carryover = make_number (0); | |
3946 | p->encoding_buf = make_uninit_string (0); | |
3947 | p->encoding_carryover = make_number (0); | |
3948 | ||
3949 | p->inherit_coding_system_flag | |
3950 | = (NILP (buffer) ? Qnil : ps->inherit_coding_system_flag); | |
3951 | ||
3952 | if (!NILP (ps->log)) | |
3953 | call3 (ps->log, server, proc, | |
3954 | concat3 (build_string ("accept from "), | |
3955 | (STRINGP (host) ? host : build_string ("-")), | |
3956 | build_string ("\n"))); | |
3957 | ||
bed9664a | 3958 | if (!NILP (p->sentinel)) |
177c0ea7 | 3959 | exec_sentinel (proc, |
e690ca94 KS |
3960 | concat3 (build_string ("open from "), |
3961 | (STRINGP (host) ? host : build_string ("-")), | |
3962 | build_string ("\n"))); | |
3963 | } | |
3964 | ||
d0d6b7c5 JB |
3965 | /* This variable is different from waiting_for_input in keyboard.c. |
3966 | It is used to communicate to a lisp process-filter/sentinel (via the | |
3967 | function Fwaiting_for_user_input_p below) whether emacs was waiting | |
3968 | for user-input when that process-filter was called. | |
3969 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
3970 | lisp code is being evalled. |
3971 | This is also used in record_asynch_buffer_change. | |
3972 | For that purpose, this must be 0 | |
3973 | when not inside wait_reading_process_input. */ | |
d0d6b7c5 JB |
3974 | static int waiting_for_user_input_p; |
3975 | ||
c573ae8e | 3976 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 3977 | static void |
c573ae8e RS |
3978 | wait_reading_process_input_1 () |
3979 | { | |
3980 | } | |
3981 | ||
d0d6b7c5 JB |
3982 | /* Read and dispose of subprocess output while waiting for timeout to |
3983 | elapse and/or keyboard input to be available. | |
3984 | ||
de6fd4b9 | 3985 | TIME_LIMIT is: |
d0d6b7c5 JB |
3986 | timeout in seconds, or |
3987 | zero for no limit, or | |
3988 | -1 means gobble data immediately available but don't wait for any. | |
3989 | ||
de6fd4b9 RS |
3990 | MICROSECS is: |
3991 | an additional duration to wait, measured in microseconds. | |
3992 | If this is nonzero and time_limit is 0, then the timeout | |
3993 | consists of MICROSECS only. | |
6e4f3667 | 3994 | |
de6fd4b9 | 3995 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
3996 | 0 to ignore keyboard input, or |
3997 | 1 to return when input is available, or | |
84aa3ace | 3998 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 3999 | the quit handler, or |
e6194ffc | 4000 | a cons cell, meaning wait until its car is non-nil |
de6fd4b9 | 4001 | (and gobble terminal input into the buffer if any arrives), or |
f76475ad JB |
4002 | a process object, meaning wait until something arrives from that |
4003 | process. The return value is true iff we read some input from | |
4004 | that process. | |
d0d6b7c5 | 4005 | |
de6fd4b9 | 4006 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
d0d6b7c5 JB |
4007 | output that arrives. |
4008 | ||
de6fd4b9 | 4009 | If READ_KBD is a pointer to a struct Lisp_Process, then the |
d0d6b7c5 JB |
4010 | function returns true iff we received input from that process |
4011 | before the timeout elapsed. | |
eb8c3be9 | 4012 | Otherwise, return true iff we received input from any process. */ |
d0d6b7c5 | 4013 | |
dfcf069d | 4014 | int |
d0d6b7c5 | 4015 | wait_reading_process_input (time_limit, microsecs, read_kbd, do_display) |
f76475ad JB |
4016 | int time_limit, microsecs; |
4017 | Lisp_Object read_kbd; | |
4018 | int do_display; | |
d0d6b7c5 | 4019 | { |
41d03b9a | 4020 | register int channel, nfds; |
d0d6b7c5 | 4021 | static SELECT_TYPE Available; |
dd2a17ab | 4022 | static SELECT_TYPE Connecting; |
2d942bfa | 4023 | int check_connect, check_delay, no_avail; |
d0d6b7c5 JB |
4024 | int xerrno; |
4025 | Lisp_Object proc; | |
41d03b9a | 4026 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4027 | int wait_channel = -1; |
d0d6b7c5 JB |
4028 | struct Lisp_Process *wait_proc = 0; |
4029 | int got_some_input = 0; | |
f3fbd155 KR |
4030 | /* Either nil or a cons cell, the car of which is of interest and |
4031 | may be changed outside of this routine. */ | |
4032 | Lisp_Object wait_for_cell = Qnil; | |
d0d6b7c5 JB |
4033 | |
4034 | FD_ZERO (&Available); | |
dd2a17ab | 4035 | FD_ZERO (&Connecting); |
d0d6b7c5 | 4036 | |
f76475ad JB |
4037 | /* If read_kbd is a process to watch, set wait_proc and wait_channel |
4038 | accordingly. */ | |
bcd69aea | 4039 | if (PROCESSP (read_kbd)) |
d0d6b7c5 | 4040 | { |
f76475ad | 4041 | wait_proc = XPROCESS (read_kbd); |
a9f2c884 | 4042 | wait_channel = XINT (wait_proc->infd); |
22719df2 | 4043 | XSETFASTINT (read_kbd, 0); |
d0d6b7c5 JB |
4044 | } |
4045 | ||
84aa3ace | 4046 | /* If waiting for non-nil in a cell, record where. */ |
bcd69aea | 4047 | if (CONSP (read_kbd)) |
84aa3ace | 4048 | { |
f3fbd155 | 4049 | wait_for_cell = read_kbd; |
22719df2 | 4050 | XSETFASTINT (read_kbd, 0); |
84aa3ace RS |
4051 | } |
4052 | ||
f76475ad | 4053 | waiting_for_user_input_p = XINT (read_kbd); |
d0d6b7c5 JB |
4054 | |
4055 | /* Since we may need to wait several times, | |
4056 | compute the absolute time to return at. */ | |
4057 | if (time_limit || microsecs) | |
4058 | { | |
4059 | EMACS_GET_TIME (end_time); | |
4060 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4061 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4062 | } | |
19310311 | 4063 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4064 | /* AlainF 5-Jul-1996 |
4065 | HP-UX 10.10 seem to have problems with signals coming in | |
4066 | Causes "poll: interrupted system call" messages when Emacs is run | |
4067 | in an X window | |
75eb23f1 RS |
4068 | Turn off periodic alarms (in case they are in use), |
4069 | and then turn off any other atimers. */ | |
4070 | stop_polling (); | |
30904ab7 | 4071 | turn_on_atimers (0); |
19310311 | 4072 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
d0d6b7c5 | 4073 | |
d0d6b7c5 JB |
4074 | while (1) |
4075 | { | |
c0239a0b RS |
4076 | int timeout_reduced_for_timers = 0; |
4077 | ||
d0d6b7c5 JB |
4078 | /* If calling from keyboard input, do not quit |
4079 | since we want to return C-g as an input character. | |
4080 | Otherwise, do pending quit if requested. */ | |
f76475ad | 4081 | if (XINT (read_kbd) >= 0) |
d0d6b7c5 | 4082 | QUIT; |
43ff45a0 SM |
4083 | #ifdef SYNC_INPUT |
4084 | else if (interrupt_input_pending) | |
4085 | handle_async_input (); | |
4086 | #endif | |
d0d6b7c5 | 4087 | |
889255b4 | 4088 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4089 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4090 | break; |
4091 | ||
d0d6b7c5 JB |
4092 | /* Compute time from now till when time limit is up */ |
4093 | /* Exit if already run out */ | |
4094 | if (time_limit == -1) | |
4095 | { | |
4096 | /* -1 specified for timeout means | |
4097 | gobble output available now | |
4098 | but don't wait at all. */ | |
4099 | ||
4100 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4101 | } | |
4102 | else if (time_limit || microsecs) | |
4103 | { | |
4104 | EMACS_GET_TIME (timeout); | |
4105 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4106 | if (EMACS_TIME_NEG_P (timeout)) | |
4107 | break; | |
4108 | } | |
4109 | else | |
4110 | { | |
4111 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4112 | } | |
4113 | ||
f854a00b RS |
4114 | /* Normally we run timers here. |
4115 | But not if wait_for_cell; in those cases, | |
4116 | the wait is supposed to be short, | |
4117 | and those callers cannot handle running arbitrary Lisp code here. */ | |
f3fbd155 | 4118 | if (NILP (wait_for_cell)) |
fb4c3627 | 4119 | { |
c0239a0b | 4120 | EMACS_TIME timer_delay; |
c573ae8e | 4121 | |
9baacf76 | 4122 | do |
c573ae8e | 4123 | { |
9baacf76 | 4124 | int old_timers_run = timers_run; |
c88164fe | 4125 | struct buffer *old_buffer = current_buffer; |
177c0ea7 | 4126 | |
9baacf76 | 4127 | timer_delay = timer_check (1); |
a2fab450 GM |
4128 | |
4129 | /* If a timer has run, this might have changed buffers | |
4130 | an alike. Make read_key_sequence aware of that. */ | |
4131 | if (timers_run != old_timers_run | |
c88164fe | 4132 | && old_buffer != current_buffer |
a2fab450 GM |
4133 | && waiting_for_user_input_p == -1) |
4134 | record_asynch_buffer_change (); | |
177c0ea7 | 4135 | |
9baacf76 GM |
4136 | if (timers_run != old_timers_run && do_display) |
4137 | /* We must retry, since a timer may have requeued itself | |
4138 | and that could alter the time_delay. */ | |
3007ebfb | 4139 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4140 | else |
4141 | break; | |
c573ae8e | 4142 | } |
9baacf76 | 4143 | while (!detect_input_pending ()); |
c573ae8e | 4144 | |
69645afc RS |
4145 | /* If there is unread keyboard input, also return. */ |
4146 | if (XINT (read_kbd) != 0 | |
4147 | && requeued_events_pending_p ()) | |
4148 | break; | |
4149 | ||
c0239a0b | 4150 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4151 | { |
4152 | EMACS_TIME difference; | |
4153 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4154 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4155 | { |
4156 | timeout = timer_delay; | |
4157 | timeout_reduced_for_timers = 1; | |
4158 | } | |
fb4c3627 | 4159 | } |
4abca5e7 RS |
4160 | /* If time_limit is -1, we are not going to wait at all. */ |
4161 | else if (time_limit != -1) | |
c573ae8e RS |
4162 | { |
4163 | /* This is so a breakpoint can be put here. */ | |
4164 | wait_reading_process_input_1 (); | |
4165 | } | |
fb4c3627 RS |
4166 | } |
4167 | ||
90ab1a81 JB |
4168 | /* Cause C-g and alarm signals to take immediate action, |
4169 | and cause input available signals to zero out timeout. | |
4170 | ||
4171 | It is important that we do this before checking for process | |
4172 | activity. If we get a SIGCHLD after the explicit checks for | |
4173 | process activity, timeout is the only way we will know. */ | |
4174 | if (XINT (read_kbd) < 0) | |
4175 | set_waiting_for_input (&timeout); | |
4176 | ||
6be429b1 JB |
4177 | /* If status of something has changed, and no input is |
4178 | available, notify the user of the change right away. After | |
4179 | this explicit check, we'll let the SIGCHLD handler zap | |
4180 | timeout to get our attention. */ | |
4181 | if (update_tick != process_tick && do_display) | |
4182 | { | |
dd2a17ab KS |
4183 | SELECT_TYPE Atemp, Ctemp; |
4184 | ||
6be429b1 | 4185 | Atemp = input_wait_mask; |
e0f712ba AC |
4186 | #ifdef MAC_OSX |
4187 | /* On Mac OS X, the SELECT system call always says input is | |
4188 | present (for reading) at stdin, even when none is. This | |
aa87aafc | 4189 | causes the call to SELECT below to return 1 and |
e0f712ba AC |
4190 | status_notify not to be called. As a result output of |
4191 | subprocesses are incorrectly discarded. */ | |
4192 | FD_CLR (0, &Atemp); | |
4193 | #endif | |
dd2a17ab | 4194 | Ctemp = connect_wait_mask; |
6be429b1 | 4195 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
0c9960e9 | 4196 | if ((select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4197 | &Atemp, |
dd2a17ab KS |
4198 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
4199 | (SELECT_TYPE *)0, &timeout) | |
ecd1f654 | 4200 | <= 0)) |
90ab1a81 JB |
4201 | { |
4202 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4203 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 JB |
4204 | clear_waiting_for_input (); |
4205 | status_notify (); | |
4206 | } | |
6be429b1 JB |
4207 | } |
4208 | ||
dd2a17ab KS |
4209 | /* Don't wait for output from a non-running process. Just |
4210 | read whatever data has already been received. */ | |
6be429b1 JB |
4211 | if (wait_proc != 0 && !NILP (wait_proc->raw_status_low)) |
4212 | update_status (wait_proc); | |
4213 | if (wait_proc != 0 | |
dd2a17ab KS |
4214 | && ! EQ (wait_proc->status, Qrun) |
4215 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4216 | { |
215b45e9 | 4217 | int nread, total_nread = 0; |
7ce63188 | 4218 | |
9aa2a7f4 | 4219 | clear_waiting_for_input (); |
7ce63188 RS |
4220 | XSETPROCESS (proc, wait_proc); |
4221 | ||
4222 | /* Read data from the process, until we exhaust it. */ | |
e1b37c34 | 4223 | while (XINT (wait_proc->infd) >= 0) |
215b45e9 | 4224 | { |
e1b37c34 GM |
4225 | nread = read_process_output (proc, XINT (wait_proc->infd)); |
4226 | ||
4227 | if (nread == 0) | |
4228 | break; | |
4229 | ||
177c0ea7 | 4230 | if (0 < nread) |
215b45e9 RS |
4231 | total_nread += nread; |
4232 | #ifdef EIO | |
4233 | else if (nread == -1 && EIO == errno) | |
4234 | break; | |
e1b37c34 GM |
4235 | #endif |
4236 | #ifdef EAGAIN | |
4237 | else if (nread == -1 && EAGAIN == errno) | |
4238 | break; | |
4239 | #endif | |
4240 | #ifdef EWOULDBLOCK | |
4241 | else if (nread == -1 && EWOULDBLOCK == errno) | |
4242 | break; | |
215b45e9 RS |
4243 | #endif |
4244 | } | |
7ce63188 | 4245 | if (total_nread > 0 && do_display) |
3007ebfb | 4246 | redisplay_preserve_echo_area (10); |
7ce63188 | 4247 | |
9aa2a7f4 JB |
4248 | break; |
4249 | } | |
6be429b1 | 4250 | |
d0d6b7c5 JB |
4251 | /* Wait till there is something to do */ |
4252 | ||
f3fbd155 | 4253 | if (!NILP (wait_for_cell)) |
dd2a17ab KS |
4254 | { |
4255 | Available = non_process_wait_mask; | |
2d942bfa | 4256 | check_connect = check_delay = 0; |
dd2a17ab | 4257 | } |
a69281ff | 4258 | else |
dd2a17ab KS |
4259 | { |
4260 | if (! XINT (read_kbd)) | |
4261 | Available = non_keyboard_wait_mask; | |
4262 | else | |
4263 | Available = input_wait_mask; | |
4264 | check_connect = (num_pending_connects > 0); | |
2d942bfa | 4265 | check_delay = process_output_delay_count; |
dd2a17ab | 4266 | } |
d0d6b7c5 | 4267 | |
ff11dfa1 | 4268 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4269 | redisplay now, before we start to wait. There is a race |
4270 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4271 | and indicates that a frame is trashed, the select may block |
4272 | displaying a trashed screen. */ | |
5164ee8e | 4273 | if (frame_garbaged && do_display) |
7286affd RS |
4274 | { |
4275 | clear_waiting_for_input (); | |
3007ebfb | 4276 | redisplay_preserve_echo_area (11); |
7286affd | 4277 | if (XINT (read_kbd) < 0) |
7efe788e | 4278 | set_waiting_for_input (&timeout); |
7286affd | 4279 | } |
ffd56f97 | 4280 | |
dd2a17ab | 4281 | no_avail = 0; |
0a65b032 RS |
4282 | if (XINT (read_kbd) && detect_input_pending ()) |
4283 | { | |
4284 | nfds = 0; | |
dd2a17ab | 4285 | no_avail = 1; |
0a65b032 RS |
4286 | } |
4287 | else | |
dd2a17ab KS |
4288 | { |
4289 | if (check_connect) | |
4290 | Connecting = connect_wait_mask; | |
2d942bfa KS |
4291 | |
4292 | #ifdef ADAPTIVE_READ_BUFFERING | |
4293 | if (process_output_skip && check_delay > 0) | |
4294 | { | |
4295 | int usecs = EMACS_USECS (timeout); | |
4296 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4297 | usecs = READ_OUTPUT_DELAY_MAX; | |
4298 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4299 | { | |
4300 | proc = chan_process[channel]; | |
4301 | if (NILP (proc)) | |
4302 | continue; | |
9076a823 | 4303 | if (XINT (XPROCESS (proc)->read_output_delay) > 0) |
2d942bfa KS |
4304 | { |
4305 | check_delay--; | |
4306 | if (NILP (XPROCESS (proc)->read_output_skip)) | |
4307 | continue; | |
4308 | FD_CLR (channel, &Available); | |
4309 | XPROCESS (proc)->read_output_skip = Qnil; | |
4310 | if (XINT (XPROCESS (proc)->read_output_delay) < usecs) | |
4311 | usecs = XINT (XPROCESS (proc)->read_output_delay); | |
4312 | } | |
4313 | } | |
4314 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4315 | process_output_skip = 0; | |
4316 | } | |
4317 | #endif | |
4318 | ||
dd2a17ab | 4319 | nfds = select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4320 | &Available, |
dd2a17ab KS |
4321 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
4322 | (SELECT_TYPE *)0, &timeout); | |
4323 | } | |
6720a7fb | 4324 | |
d0d6b7c5 JB |
4325 | xerrno = errno; |
4326 | ||
4327 | /* Make C-g and alarm signals set flags again */ | |
4328 | clear_waiting_for_input (); | |
4329 | ||
4330 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4331 | do_pending_window_change (0); |
d0d6b7c5 | 4332 | |
c0239a0b RS |
4333 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4334 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4335 | break; |
4336 | if (nfds < 0) | |
4337 | { | |
4338 | if (xerrno == EINTR) | |
dd2a17ab | 4339 | no_avail = 1; |
b0310da4 JB |
4340 | #ifdef ultrix |
4341 | /* Ultrix select seems to return ENOMEM when it is | |
4342 | interrupted. Treat it just like EINTR. Bleah. Note | |
4343 | that we want to test for the "ultrix" CPP symbol, not | |
4344 | "__ultrix__"; the latter is only defined under GCC, but | |
4345 | not by DEC's bundled CC. -JimB */ | |
8058415c | 4346 | else if (xerrno == ENOMEM) |
dd2a17ab | 4347 | no_avail = 1; |
8058415c | 4348 | #endif |
d0d6b7c5 JB |
4349 | #ifdef ALLIANT |
4350 | /* This happens for no known reason on ALLIANT. | |
4351 | I am guessing that this is the right response. -- RMS. */ | |
4352 | else if (xerrno == EFAULT) | |
dd2a17ab | 4353 | no_avail = 1; |
d0d6b7c5 JB |
4354 | #endif |
4355 | else if (xerrno == EBADF) | |
4356 | { | |
4357 | #ifdef AIX | |
4358 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4359 | the child's closure of the pts gives the parent a SIGHUP, and | |
4360 | the ptc file descriptor is automatically closed, | |
4361 | yielding EBADF here or at select() call above. | |
4362 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4363 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4364 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4365 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4366 | #else |
4367 | abort (); | |
4368 | #endif | |
4369 | } | |
4370 | else | |
68c45bf0 | 4371 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4372 | } |
dd2a17ab KS |
4373 | |
4374 | if (no_avail) | |
4375 | { | |
4376 | FD_ZERO (&Available); | |
4377 | check_connect = 0; | |
4378 | } | |
4379 | ||
26ec91de | 4380 | #if defined(sun) && !defined(USG5_4) |
dd2a17ab KS |
4381 | if (nfds > 0 && keyboard_bit_set (&Available) |
4382 | && interrupt_input) | |
e0109153 JB |
4383 | /* System sometimes fails to deliver SIGIO. |
4384 | ||
4385 | David J. Mackenzie says that Emacs doesn't compile under | |
4386 | Solaris if this code is enabled, thus the USG5_4 in the CPP | |
4387 | conditional. "I haven't noticed any ill effects so far. | |
4388 | If you find a Solaris expert somewhere, they might know | |
4389 | better." */ | |
d0d6b7c5 JB |
4390 | kill (getpid (), SIGIO); |
4391 | #endif | |
4392 | ||
5d5beb62 RS |
4393 | #if 0 /* When polling is used, interrupt_input is 0, |
4394 | so get_input_pending should read the input. | |
4395 | So this should not be needed. */ | |
4396 | /* If we are using polling for input, | |
4397 | and we see input available, make it get read now. | |
4398 | Otherwise it might not actually get read for a second. | |
4399 | And on hpux, since we turn off polling in wait_reading_process_input, | |
4400 | it might never get read at all if we don't spend much time | |
4401 | outside of wait_reading_process_input. */ | |
4402 | if (XINT (read_kbd) && interrupt_input | |
4403 | && keyboard_bit_set (&Available) | |
4404 | && input_polling_used ()) | |
4405 | kill (getpid (), SIGALRM); | |
4406 | #endif | |
4407 | ||
d0d6b7c5 JB |
4408 | /* Check for keyboard input */ |
4409 | /* If there is any, return immediately | |
4410 | to give it higher priority than subprocesses */ | |
4411 | ||
a2fab450 | 4412 | if (XINT (read_kbd) != 0) |
6ed6233b | 4413 | { |
a2fab450 | 4414 | int old_timers_run = timers_run; |
c88164fe | 4415 | struct buffer *old_buffer = current_buffer; |
a2fab450 | 4416 | int leave = 0; |
177c0ea7 | 4417 | |
5d6c2aa3 | 4418 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4419 | { |
4420 | swallow_events (do_display); | |
4421 | if (detect_input_pending_run_timers (do_display)) | |
4422 | leave = 1; | |
4423 | } | |
6ed6233b | 4424 | |
a2fab450 GM |
4425 | /* If a timer has run, this might have changed buffers |
4426 | an alike. Make read_key_sequence aware of that. */ | |
4427 | if (timers_run != old_timers_run | |
c88164fe GM |
4428 | && waiting_for_user_input_p == -1 |
4429 | && old_buffer != current_buffer) | |
a2fab450 GM |
4430 | record_asynch_buffer_change (); |
4431 | ||
4432 | if (leave) | |
4433 | break; | |
177c0ea7 JB |
4434 | } |
4435 | ||
69645afc RS |
4436 | /* If there is unread keyboard input, also return. */ |
4437 | if (XINT (read_kbd) != 0 | |
4438 | && requeued_events_pending_p ()) | |
4439 | break; | |
4440 | ||
77e1b3d4 RS |
4441 | /* If we are not checking for keyboard input now, |
4442 | do process events (but don't run any timers). | |
4443 | This is so that X events will be processed. | |
0c9960e9 | 4444 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4445 | That would causes delays in pasting selections, for example. |
4446 | ||
4447 | (We used to do this only if wait_for_cell.) */ | |
4448 | if (XINT (read_kbd) == 0 && detect_input_pending ()) | |
f854a00b RS |
4449 | { |
4450 | swallow_events (do_display); | |
0c9960e9 | 4451 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4452 | if (detect_input_pending ()) |
4453 | break; | |
5d5beb62 | 4454 | #endif |
0c9960e9 | 4455 | } |
f854a00b | 4456 | |
84aa3ace | 4457 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4458 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4459 | break; |
4460 | ||
4746118a | 4461 | #ifdef SIGIO |
5d5beb62 | 4462 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4463 | go read it. This can happen with X on BSD after logging out. |
4464 | In that case, there really is no input and no SIGIO, | |
4465 | but select says there is input. */ | |
4466 | ||
dd2281ae | 4467 | if (XINT (read_kbd) && interrupt_input |
2601f59e | 4468 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4469 | kill (getpid (), SIGIO); |
4746118a | 4470 | #endif |
d0d6b7c5 | 4471 | |
d0d6b7c5 JB |
4472 | if (! wait_proc) |
4473 | got_some_input |= nfds > 0; | |
4474 | ||
32676c08 JB |
4475 | /* If checking input just got us a size-change event from X, |
4476 | obey it now if we should. */ | |
f3fbd155 | 4477 | if (XINT (read_kbd) || ! NILP (wait_for_cell)) |
2b653806 | 4478 | do_pending_window_change (0); |
32676c08 | 4479 | |
a9f2c884 | 4480 | /* Check for data from a process. */ |
dd2a17ab KS |
4481 | if (no_avail || nfds == 0) |
4482 | continue; | |
4483 | ||
a9f2c884 RS |
4484 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4485 | but this is safer in the short run. */ | |
a69281ff | 4486 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4487 | { |
a69281ff RS |
4488 | if (FD_ISSET (channel, &Available) |
4489 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4490 | { |
4491 | int nread; | |
4492 | ||
4493 | /* If waiting for this channel, arrange to return as | |
4494 | soon as no more input to be processed. No more | |
4495 | waiting. */ | |
4496 | if (wait_channel == channel) | |
4497 | { | |
a9f2c884 | 4498 | wait_channel = -1; |
d0d6b7c5 JB |
4499 | time_limit = -1; |
4500 | got_some_input = 1; | |
4501 | } | |
4502 | proc = chan_process[channel]; | |
4503 | if (NILP (proc)) | |
4504 | continue; | |
4505 | ||
e690ca94 KS |
4506 | /* If this is a server stream socket, accept connection. */ |
4507 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4508 | { | |
4509 | server_accept_connection (proc, channel); | |
4510 | continue; | |
4511 | } | |
4512 | ||
d0d6b7c5 JB |
4513 | /* Read data from the process, starting with our |
4514 | buffered-ahead character if we have one. */ | |
4515 | ||
4516 | nread = read_process_output (proc, channel); | |
4517 | if (nread > 0) | |
4518 | { | |
4519 | /* Since read_process_output can run a filter, | |
4520 | which can call accept-process-output, | |
4521 | don't try to read from any other processes | |
4522 | before doing the select again. */ | |
4523 | FD_ZERO (&Available); | |
4524 | ||
4525 | if (do_display) | |
3007ebfb | 4526 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4527 | } |
4528 | #ifdef EWOULDBLOCK | |
4529 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4530 | ; | |
0b75e9a4 | 4531 | #endif |
89d7280d RS |
4532 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4533 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4534 | #ifdef O_NONBLOCK |
4535 | else if (nread == -1 && errno == EAGAIN) | |
4536 | ; | |
4537 | #else | |
4538 | #ifdef O_NDELAY | |
4539 | else if (nread == -1 && errno == EAGAIN) | |
4540 | ; | |
4541 | /* Note that we cannot distinguish between no input | |
4542 | available now and a closed pipe. | |
4543 | With luck, a closed pipe will be accompanied by | |
4544 | subprocess termination and SIGCHLD. */ | |
4545 | else if (nread == 0 && !NETCONN_P (proc)) | |
4546 | ; | |
ffd56f97 JB |
4547 | #endif /* O_NDELAY */ |
4548 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4549 | #ifdef HAVE_PTYS |
4550 | /* On some OSs with ptys, when the process on one end of | |
4551 | a pty exits, the other end gets an error reading with | |
4552 | errno = EIO instead of getting an EOF (0 bytes read). | |
4553 | Therefore, if we get an error reading and errno = | |
4554 | EIO, just continue, because the child process has | |
4555 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4556 | get a SIGCHLD). |
4557 | ||
4558 | However, it has been known to happen that the SIGCHLD | |
4559 | got lost. So raise the signl again just in case. | |
4560 | It can't hurt. */ | |
d0d6b7c5 | 4561 | else if (nread == -1 && errno == EIO) |
5651af6d | 4562 | kill (getpid (), SIGCHLD); |
ffd56f97 JB |
4563 | #endif /* HAVE_PTYS */ |
4564 | /* If we can detect process termination, don't consider the process | |
4565 | gone just because its pipe is closed. */ | |
d0d6b7c5 JB |
4566 | #ifdef SIGCHLD |
4567 | else if (nread == 0 && !NETCONN_P (proc)) | |
4568 | ; | |
4569 | #endif | |
4570 | else | |
4571 | { | |
4572 | /* Preserve status of processes already terminated. */ | |
4573 | XSETINT (XPROCESS (proc)->tick, ++process_tick); | |
4574 | deactivate_process (proc); | |
4575 | if (!NILP (XPROCESS (proc)->raw_status_low)) | |
4576 | update_status (XPROCESS (proc)); | |
4577 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4578 | XPROCESS (proc)->status | |
4579 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4580 | } | |
4581 | } | |
177c0ea7 | 4582 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4583 | if (check_connect && FD_ISSET (channel, &Connecting)) |
4584 | { | |
4585 | struct Lisp_Process *p; | |
dd2a17ab KS |
4586 | |
4587 | FD_CLR (channel, &connect_wait_mask); | |
4588 | if (--num_pending_connects < 0) | |
4589 | abort (); | |
4590 | ||
4591 | proc = chan_process[channel]; | |
4592 | if (NILP (proc)) | |
4593 | continue; | |
4594 | ||
4595 | p = XPROCESS (proc); | |
4596 | ||
4597 | #ifdef GNU_LINUX | |
4598 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
4599 | So only use it on systems where it is known to work. */ | |
4600 | { | |
e690ca94 | 4601 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
4602 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
4603 | xerrno = errno; | |
4604 | } | |
4605 | #else | |
44c887be PJ |
4606 | { |
4607 | struct sockaddr pname; | |
4608 | int pnamelen = sizeof(pname); | |
4609 | ||
4610 | /* If connection failed, getpeername will fail. */ | |
4611 | xerrno = 0; | |
4612 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
4613 | { | |
4614 | /* Obtain connect failure code through error slippage. */ | |
4615 | char dummy; | |
dd2a17ab | 4616 | xerrno = errno; |
44c887be PJ |
4617 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
4618 | xerrno = errno; | |
4619 | } | |
4620 | } | |
dd2a17ab KS |
4621 | #endif |
4622 | if (xerrno) | |
4623 | { | |
4624 | XSETINT (p->tick, ++process_tick); | |
4625 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); | |
4626 | deactivate_process (proc); | |
4627 | } | |
4628 | else | |
4629 | { | |
4630 | p->status = Qrun; | |
4631 | /* Execute the sentinel here. If we had relied on | |
4632 | status_notify to do it later, it will read input | |
4633 | from the process before calling the sentinel. */ | |
4634 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4635 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab KS |
4636 | { |
4637 | FD_SET (XINT (p->infd), &input_wait_mask); | |
4638 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
4639 | } | |
4640 | } | |
4641 | } | |
4642 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4643 | } /* end for each file descriptor */ |
4644 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4645 | |
d430ee71 RS |
4646 | waiting_for_user_input_p = 0; |
4647 | ||
ffd56f97 JB |
4648 | /* If calling from keyboard input, do not quit |
4649 | since we want to return C-g as an input character. | |
4650 | Otherwise, do pending quit if requested. */ | |
f76475ad | 4651 | if (XINT (read_kbd) >= 0) |
ffd56f97 JB |
4652 | { |
4653 | /* Prevent input_pending from remaining set if we quit. */ | |
4654 | clear_input_pending (); | |
4655 | QUIT; | |
4656 | } | |
19310311 | 4657 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4658 | /* AlainF 5-Jul-1996 |
4659 | HP-UX 10.10 seems to have problems with signals coming in | |
4660 | Causes "poll: interrupted system call" messages when Emacs is run | |
4661 | in an X window | |
4662 | Turn periodic alarms back on */ | |
5d5beb62 | 4663 | start_polling (); |
19310311 | 4664 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
efa2a55c | 4665 | |
d0d6b7c5 JB |
4666 | return got_some_input; |
4667 | } | |
4668 | \f | |
3b9a3dfa RS |
4669 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4670 | ||
4671 | static Lisp_Object | |
4672 | read_process_output_call (fun_and_args) | |
4673 | Lisp_Object fun_and_args; | |
4674 | { | |
70949dac | 4675 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4676 | } |
4677 | ||
4678 | static Lisp_Object | |
4679 | read_process_output_error_handler (error) | |
4680 | Lisp_Object error; | |
4681 | { | |
4682 | cmd_error_internal (error, "error in process filter: "); | |
4683 | Vinhibit_quit = Qt; | |
4684 | update_echo_area (); | |
833ba342 | 4685 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4686 | return Qt; |
3b9a3dfa RS |
4687 | } |
4688 | ||
d0d6b7c5 JB |
4689 | /* Read pending output from the process channel, |
4690 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 4691 | Yield number of decoded characters read. |
d0d6b7c5 JB |
4692 | |
4693 | This function reads at most 1024 characters. | |
4694 | If you want to read all available subprocess output, | |
0fa1789e KH |
4695 | you must call it repeatedly until it returns zero. |
4696 | ||
4697 | The characters read are decoded according to PROC's coding-system | |
4698 | for decoding. */ | |
d0d6b7c5 | 4699 | |
dfcf069d | 4700 | int |
d0d6b7c5 JB |
4701 | read_process_output (proc, channel) |
4702 | Lisp_Object proc; | |
4703 | register int channel; | |
4704 | { | |
e1283999 | 4705 | register int nbytes; |
d0d6b7c5 | 4706 | char *chars; |
d0d6b7c5 JB |
4707 | register Lisp_Object outstream; |
4708 | register struct buffer *old = current_buffer; | |
4709 | register struct Lisp_Process *p = XPROCESS (proc); | |
4710 | register int opoint; | |
c7580538 | 4711 | struct coding_system *coding = proc_decode_coding_system[channel]; |
e7fbaa65 | 4712 | int carryover = XINT (p->decoding_carryover); |
e690ca94 | 4713 | int readmax = 1024; |
d0d6b7c5 JB |
4714 | |
4715 | #ifdef VMS | |
4716 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); | |
4717 | ||
4718 | vs = get_vms_process_pointer (p->pid); | |
4719 | if (vs) | |
4720 | { | |
4721 | if (!vs->iosb[0]) | |
a319f7c1 | 4722 | return (0); /* Really weird if it does this */ |
d0d6b7c5 JB |
4723 | if (!(vs->iosb[0] & 1)) |
4724 | return -1; /* I/O error */ | |
4725 | } | |
4726 | else | |
4727 | error ("Could not get VMS process pointer"); | |
4728 | chars = vs->inputBuffer; | |
1d2fc612 RS |
4729 | nbytes = clean_vms_buffer (chars, vs->iosb[1]); |
4730 | if (nbytes <= 0) | |
d0d6b7c5 JB |
4731 | { |
4732 | start_vms_process_read (vs); /* Crank up the next read on the process */ | |
4733 | return 1; /* Nothing worth printing, say we got 1 */ | |
4734 | } | |
e7fbaa65 | 4735 | if (carryover > 0) |
0fa1789e | 4736 | { |
e7fbaa65 KH |
4737 | /* The data carried over in the previous decoding (which are at |
4738 | the tail of decoding buffer) should be prepended to the new | |
4739 | data read to decode all together. */ | |
ed7a4b2d | 4740 | chars = (char *) alloca (nbytes + carryover); |
d5db4077 | 4741 | bcopy (SDATA (p->decoding_buf), buf, carryover); |
ed7a4b2d | 4742 | bcopy (vs->inputBuffer, chars + carryover, nbytes); |
0fa1789e | 4743 | } |
d0d6b7c5 | 4744 | #else /* not VMS */ |
e690ca94 KS |
4745 | |
4746 | #ifdef DATAGRAM_SOCKETS | |
4747 | /* A datagram is one packet; allow at least 1500+ bytes of data | |
4748 | corresponding to the typical Ethernet frame size. */ | |
4749 | if (DATAGRAM_CHAN_P (channel)) | |
4750 | { | |
4751 | /* carryover = 0; */ /* Does carryover make sense for datagrams? */ | |
4752 | readmax += 1024; | |
4753 | } | |
4754 | #endif | |
4755 | ||
4756 | chars = (char *) alloca (carryover + readmax); | |
e7fbaa65 KH |
4757 | if (carryover) |
4758 | /* See the comment above. */ | |
d5db4077 | 4759 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 4760 | |
e690ca94 KS |
4761 | #ifdef DATAGRAM_SOCKETS |
4762 | /* We have a working select, so proc_buffered_char is always -1. */ | |
4763 | if (DATAGRAM_CHAN_P (channel)) | |
4764 | { | |
4765 | int len = datagram_address[channel].len; | |
47714441 | 4766 | nbytes = recvfrom (channel, chars + carryover, readmax - carryover, |
e690ca94 KS |
4767 | 0, datagram_address[channel].sa, &len); |
4768 | } | |
4769 | else | |
4770 | #endif | |
d0d6b7c5 | 4771 | if (proc_buffered_char[channel] < 0) |
2d942bfa KS |
4772 | { |
4773 | nbytes = emacs_read (channel, chars + carryover, readmax - carryover); | |
4774 | #ifdef ADAPTIVE_READ_BUFFERING | |
4775 | if (!NILP (p->adaptive_read_buffering)) | |
4776 | { | |
4777 | int delay = XINT (p->read_output_delay); | |
05b72afd | 4778 | if (nbytes < 256) |
2d942bfa KS |
4779 | { |
4780 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
4781 | { | |
4782 | if (delay == 0) | |
4783 | process_output_delay_count++; | |
4784 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
4785 | } | |
4786 | } | |
05b72afd | 4787 | else if (delay > 0 && (nbytes == readmax - carryover)) |
2d942bfa KS |
4788 | { |
4789 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
4790 | if (delay == 0) | |
4791 | process_output_delay_count--; | |
4792 | } | |
4793 | XSETINT (p->read_output_delay, delay); | |
4794 | if (delay) | |
4795 | { | |
4796 | p->read_output_skip = Qt; | |
4797 | process_output_skip = 1; | |
4798 | } | |
4799 | } | |
4800 | #endif | |
4801 | } | |
d0d6b7c5 JB |
4802 | else |
4803 | { | |
ed7a4b2d | 4804 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 4805 | proc_buffered_char[channel] = -1; |
47714441 | 4806 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1 - carryover); |
1d2fc612 RS |
4807 | if (nbytes < 0) |
4808 | nbytes = 1; | |
d0d6b7c5 | 4809 | else |
1d2fc612 | 4810 | nbytes = nbytes + 1; |
d0d6b7c5 JB |
4811 | } |
4812 | #endif /* not VMS */ | |
4813 | ||
ca65341e KH |
4814 | XSETINT (p->decoding_carryover, 0); |
4815 | ||
ed7a4b2d | 4816 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 4817 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
4818 | if (nbytes <= 0) |
4819 | { | |
4820 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
4821 | return nbytes; | |
4822 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
4823 | } | |
d0d6b7c5 | 4824 | |
1d2fc612 | 4825 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 4826 | nbytes += carryover; |
0fa1789e | 4827 | |
1d2fc612 | 4828 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
4829 | outstream = p->filter; |
4830 | if (!NILP (outstream)) | |
4831 | { | |
177c0ea7 | 4832 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
4833 | hitting ^G when a filter happens to be running won't screw |
4834 | it up. */ | |
aed13378 | 4835 | int count = SPECPDL_INDEX (); |
30c78175 | 4836 | Lisp_Object odeactivate; |
dfc21838 | 4837 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 4838 | Lisp_Object text; |
4da2f5be | 4839 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 4840 | int waiting = waiting_for_user_input_p; |
30c78175 | 4841 | |
dfc21838 RS |
4842 | /* No need to gcpro these, because all we do with them later |
4843 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 4844 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
4845 | XSETBUFFER (obuffer, current_buffer); |
4846 | okeymap = current_buffer->keymap; | |
30c78175 | 4847 | |
d0d6b7c5 | 4848 | specbind (Qinhibit_quit, Qt); |
6545aada | 4849 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 4850 | |
4da2f5be RS |
4851 | /* In case we get recursively called, |
4852 | and we already saved the match data nonrecursively, | |
4853 | save the same match data in safely recursive fashion. */ | |
4854 | if (outer_running_asynch_code) | |
4855 | { | |
4856 | Lisp_Object tem; | |
4857 | /* Don't clobber the CURRENT match data, either! */ | |
dd130227 | 4858 | tem = Fmatch_data (Qnil, Qnil); |
4da2f5be | 4859 | restore_match_data (); |
8f1ecd05 RS |
4860 | record_unwind_protect (Fset_match_data, Fmatch_data (Qnil, Qnil)); |
4861 | Fset_match_data (tem); | |
4da2f5be RS |
4862 | } |
4863 | ||
4864 | /* For speed, if a search happens within this code, | |
4865 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 4866 | running_asynch_code = 1; |
4da2f5be | 4867 | |
ed7a4b2d KH |
4868 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
4869 | coding, 0); | |
082a1df2 | 4870 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
4871 | /* A new coding system might be found. */ |
4872 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
4873 | { | |
4874 | p->decode_coding_system = coding->symbol; | |
4875 | ||
4876 | /* Don't call setup_coding_system for | |
4877 | proc_decode_coding_system[channel] here. It is done in | |
4878 | detect_coding called via decode_coding above. */ | |
4879 | ||
4880 | /* If a coding system for encoding is not yet decided, we set | |
4881 | it as the same as coding-system for decoding. | |
4882 | ||
4883 | But, before doing that we must check if | |
4884 | proc_encode_coding_system[p->outfd] surely points to a | |
4885 | valid memory because p->outfd will be changed once EOF is | |
4886 | sent to the process. */ | |
4887 | if (NILP (p->encode_coding_system) | |
4888 | && proc_encode_coding_system[XINT (p->outfd)]) | |
4889 | { | |
4890 | p->encode_coding_system = coding->symbol; | |
4891 | setup_coding_system (coding->symbol, | |
4892 | proc_encode_coding_system[XINT (p->outfd)]); | |
4893 | } | |
4894 | } | |
51c6067d | 4895 | |
ed7a4b2d | 4896 | carryover = nbytes - coding->consumed; |
d5db4077 | 4897 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
4898 | carryover); |
4899 | XSETINT (p->decoding_carryover, carryover); | |
03f04413 KH |
4900 | /* Adjust the multibyteness of TEXT to that of the filter. */ |
4901 | if (NILP (p->filter_multibyte) != ! STRING_MULTIBYTE (text)) | |
4902 | text = (STRING_MULTIBYTE (text) | |
4903 | ? Fstring_as_unibyte (text) | |
4904 | : Fstring_to_multibyte (text)); | |
e430e5ba | 4905 | if (SBYTES (text) > 0) |
dd97db06 KH |
4906 | internal_condition_case_1 (read_process_output_call, |
4907 | Fcons (outstream, | |
4908 | Fcons (proc, Fcons (text, Qnil))), | |
4909 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
4910 | read_process_output_error_handler); | |
4da2f5be RS |
4911 | |
4912 | /* If we saved the match data nonrecursively, restore it now. */ | |
7074fde6 | 4913 | restore_match_data (); |
4da2f5be | 4914 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 4915 | |
592ce97f | 4916 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
4917 | Vdeactivate_mark = odeactivate; |
4918 | ||
bbce7d72 RS |
4919 | /* Restore waiting_for_user_input_p as it was |
4920 | when we were called, in case the filter clobbered it. */ | |
4921 | waiting_for_user_input_p = waiting; | |
4922 | ||
7973cfa8 RS |
4923 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
4924 | because we might have changed minor modes or other things | |
4925 | that affect key bindings. */ | |
dfc21838 RS |
4926 | if (! EQ (Fcurrent_buffer (), obuffer) |
4927 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 4928 | #endif |
927e08be RS |
4929 | /* But do it only if the caller is actually going to read events. |
4930 | Otherwise there's no need to make him wake up, and it could | |
4931 | cause trouble (for example it would make Fsit_for return). */ | |
4932 | if (waiting_for_user_input_p == -1) | |
4933 | record_asynch_buffer_change (); | |
d72534ba | 4934 | |
d0d6b7c5 JB |
4935 | #ifdef VMS |
4936 | start_vms_process_read (vs); | |
4937 | #endif | |
2ea6d561 | 4938 | unbind_to (count, Qnil); |
e430e5ba | 4939 | return nbytes; |
d0d6b7c5 JB |
4940 | } |
4941 | ||
4942 | /* If no filter, write into buffer if it isn't dead. */ | |
4943 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
4944 | { | |
b0310da4 | 4945 | Lisp_Object old_read_only; |
12ca5cdf | 4946 | int old_begv, old_zv; |
d8a2934e | 4947 | int old_begv_byte, old_zv_byte; |
30c78175 | 4948 | Lisp_Object odeactivate; |
d8a2934e RS |
4949 | int before, before_byte; |
4950 | int opoint_byte; | |
ed7a4b2d | 4951 | Lisp_Object text; |
926b7e5e | 4952 | struct buffer *b; |
30c78175 RS |
4953 | |
4954 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 JB |
4955 | |
4956 | Fset_buffer (p->buffer); | |
6ec8bbd2 | 4957 | opoint = PT; |
d8a2934e | 4958 | opoint_byte = PT_BYTE; |
b0310da4 | 4959 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
4960 | old_begv = BEGV; |
4961 | old_zv = ZV; | |
d8a2934e RS |
4962 | old_begv_byte = BEGV_BYTE; |
4963 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
4964 | |
4965 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
4966 | |
4967 | /* Insert new output into buffer | |
4968 | at the current end-of-output marker, | |
4969 | thus preserving logical ordering of input and output. */ | |
4970 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
4971 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
4972 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
4973 | ZV_BYTE)); | |
d0d6b7c5 | 4974 | else |
d8a2934e | 4975 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 4976 | before = PT; |
d8a2934e | 4977 | before_byte = PT_BYTE; |
b0310da4 JB |
4978 | |
4979 | /* If the output marker is outside of the visible region, save | |
4980 | the restriction and widen. */ | |
6ec8bbd2 | 4981 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
4982 | Fwiden (); |
4983 | ||
ed7a4b2d KH |
4984 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
4985 | coding, 0); | |
082a1df2 | 4986 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
4987 | /* A new coding system might be found. See the comment in the |
4988 | similar code in the previous `if' block. */ | |
4989 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
4990 | { | |
4991 | p->decode_coding_system = coding->symbol; | |
4992 | if (NILP (p->encode_coding_system) | |
4993 | && proc_encode_coding_system[XINT (p->outfd)]) | |
4994 | { | |
4995 | p->encode_coding_system = coding->symbol; | |
4996 | setup_coding_system (coding->symbol, | |
4997 | proc_encode_coding_system[XINT (p->outfd)]); | |
4998 | } | |
4999 | } | |
5000 | carryover = nbytes - coding->consumed; | |
d5db4077 | 5001 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
5002 | carryover); |
5003 | XSETINT (p->decoding_carryover, carryover); | |
d69864bf KH |
5004 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5005 | if (NILP (current_buffer->enable_multibyte_characters) | |
5006 | != ! STRING_MULTIBYTE (text)) | |
5007 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5008 | ? Fstring_as_unibyte (text) |
03f04413 | 5009 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5010 | /* Insert before markers in case we are inserting where |
5011 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5012 | insert_from_string_before_markers (text, 0, 0, |
5013 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5014 | |
926b7e5e GM |
5015 | /* Make sure the process marker's position is valid when the |
5016 | process buffer is changed in the signal_after_change above. | |
5017 | W3 is known to do that. */ | |
5018 | if (BUFFERP (p->buffer) | |
5019 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5020 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5021 | else | |
5022 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5023 | |
d0d6b7c5 JB |
5024 | update_mode_lines++; |
5025 | ||
12ca5cdf RS |
5026 | /* Make sure opoint and the old restrictions |
5027 | float ahead of any new text just as point would. */ | |
5028 | if (opoint >= before) | |
d8a2934e RS |
5029 | { |
5030 | opoint += PT - before; | |
5031 | opoint_byte += PT_BYTE - before_byte; | |
5032 | } | |
12ca5cdf | 5033 | if (old_begv > before) |
d8a2934e RS |
5034 | { |
5035 | old_begv += PT - before; | |
5036 | old_begv_byte += PT_BYTE - before_byte; | |
5037 | } | |
12ca5cdf | 5038 | if (old_zv >= before) |
d8a2934e RS |
5039 | { |
5040 | old_zv += PT - before; | |
5041 | old_zv_byte += PT_BYTE - before_byte; | |
5042 | } | |
12ca5cdf | 5043 | |
b0310da4 | 5044 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5045 | if (old_begv != BEGV || old_zv != ZV) |
5046 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5047 | |
592ce97f | 5048 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5049 | Vdeactivate_mark = odeactivate; |
5050 | ||
b0310da4 | 5051 | current_buffer->read_only = old_read_only; |
d8a2934e | 5052 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 JB |
5053 | set_buffer_internal (old); |
5054 | } | |
5055 | #ifdef VMS | |
5056 | start_vms_process_read (vs); | |
5057 | #endif | |
1d2fc612 | 5058 | return nbytes; |
d0d6b7c5 JB |
5059 | } |
5060 | ||
5061 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
5062 | 0, 0, 0, | |
fdb82f93 PJ |
5063 | doc: /* Returns non-nil if emacs is waiting for input from the user. |
5064 | This is intended for use by asynchronous process output filters and sentinels. */) | |
5065 | () | |
d0d6b7c5 | 5066 | { |
8b4d685f | 5067 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
5068 | } |
5069 | \f | |
5070 | /* Sending data to subprocess */ | |
5071 | ||
5072 | jmp_buf send_process_frame; | |
0daad115 | 5073 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5074 | |
5075 | SIGTYPE | |
5076 | send_process_trap () | |
5077 | { | |
5078 | #ifdef BSD4_1 | |
5079 | sigrelse (SIGPIPE); | |
5080 | sigrelse (SIGALRM); | |
5081 | #endif /* BSD4_1 */ | |
5082 | longjmp (send_process_frame, 1); | |
5083 | } | |
5084 | ||
4556b700 RS |
5085 | /* Send some data to process PROC. |
5086 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5087 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5088 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5089 | |
a92e4183 KH |
5090 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5091 | for encoding before it is sent. | |
1fb0098c GM |
5092 | |
5093 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5094 | |
dfcf069d | 5095 | void |
4556b700 | 5096 | send_process (proc, buf, len, object) |
ecd1f654 | 5097 | volatile Lisp_Object proc; |
0daad115 GM |
5098 | unsigned char *volatile buf; |
5099 | volatile int len; | |
5100 | volatile Lisp_Object object; | |
d0d6b7c5 | 5101 | { |
ecd1f654 | 5102 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
2d942bfa | 5103 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5104 | int rv; |
0fa1789e | 5105 | struct coding_system *coding; |
6044e593 RS |
5106 | struct gcpro gcpro1; |
5107 | ||
5108 | GCPRO1 (object); | |
d0d6b7c5 | 5109 | |
d0d6b7c5 | 5110 | #ifdef VMS |
d0d6b7c5 JB |
5111 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); |
5112 | #endif /* VMS */ | |
5113 | ||
2d942bfa KS |
5114 | if (! NILP (p->raw_status_low)) |
5115 | update_status (p); | |
5116 | if (! EQ (p->status, Qrun)) | |
5117 | error ("Process %s not running", SDATA (p->name)); | |
5118 | if (XINT (p->outfd) < 0) | |
5119 | error ("Output file descriptor of %s is closed", SDATA (p->name)); | |
0fa1789e | 5120 | |
2d942bfa | 5121 | coding = proc_encode_coding_system[XINT (p->outfd)]; |
486b111b KH |
5122 | Vlast_coding_system_used = coding->symbol; |
5123 | ||
ed7a4b2d KH |
5124 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5125 | || (BUFFERP (object) | |
a92e4183 KH |
5126 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5127 | || EQ (object, Qt)) | |
278bfdd6 | 5128 | { |
2d942bfa | 5129 | if (!EQ (coding->symbol, p->encode_coding_system)) |
278bfdd6 KH |
5130 | /* The coding system for encoding was changed to raw-text |
5131 | because we sent a unibyte text previously. Now we are | |
5132 | sending a multibyte text, thus we must encode it by the | |
2d942bfa KS |
5133 | original coding system specified for the current process. */ |
5134 | setup_coding_system (p->encode_coding_system, coding); | |
fbb70ad9 EZ |
5135 | /* src_multibyte should be set to 1 _after_ a call to |
5136 | setup_coding_system, since it resets src_multibyte to | |
5137 | zero. */ | |
5138 | coding->src_multibyte = 1; | |
278bfdd6 KH |
5139 | } |
5140 | else | |
5141 | { | |
a92e4183 KH |
5142 | /* For sending a unibyte text, character code conversion should |
5143 | not take place but EOL conversion should. So, setup raw-text | |
5144 | or one of the subsidiary if we have not yet done it. */ | |
5145 | if (coding->type != coding_type_raw_text) | |
5146 | { | |
5147 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5148 | { | |
5149 | /* But, before changing the coding, we must flush out data. */ | |
5150 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5151 | send_process (proc, "", 0, Qt); | |
5152 | } | |
5153 | coding->src_multibyte = 0; | |
5154 | setup_raw_text_coding_system (coding); | |
5155 | } | |
278bfdd6 | 5156 | } |
a4a37e65 KH |
5157 | coding->dst_multibyte = 0; |
5158 | ||
ed7a4b2d | 5159 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e KH |
5160 | { |
5161 | int require = encoding_buffer_size (coding, len); | |
0daad115 | 5162 | int from_byte = -1, from = -1, to = -1; |
0fa1789e | 5163 | |
ed7a4b2d | 5164 | if (BUFFERP (object)) |
0fa1789e | 5165 | { |
ed7a4b2d KH |
5166 | from_byte = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5167 | from = buf_bytepos_to_charpos (XBUFFER (object), from_byte); | |
5168 | to = buf_bytepos_to_charpos (XBUFFER (object), from_byte + len); | |
5169 | } | |
5170 | else if (STRINGP (object)) | |
5171 | { | |
d5db4077 | 5172 | from_byte = buf - SDATA (object); |
ed7a4b2d KH |
5173 | from = string_byte_to_char (object, from_byte); |
5174 | to = string_byte_to_char (object, from_byte + len); | |
0fa1789e KH |
5175 | } |
5176 | ||
452294c2 GM |
5177 | if (coding->composing != COMPOSITION_DISABLED) |
5178 | { | |
5179 | if (from_byte >= 0) | |
5180 | coding_save_composition (coding, from, to, object); | |
5181 | else | |
5182 | coding->composing = COMPOSITION_DISABLED; | |
5183 | } | |
ed7a4b2d | 5184 | |
2d942bfa KS |
5185 | if (SBYTES (p->encoding_buf) < require) |
5186 | p->encoding_buf = make_uninit_string (require); | |
ed7a4b2d KH |
5187 | |
5188 | if (from_byte >= 0) | |
5189 | buf = (BUFFERP (object) | |
5190 | ? BUF_BYTE_ADDRESS (XBUFFER (object), from_byte) | |
d5db4077 | 5191 | : SDATA (object) + from_byte); |
0fa1789e | 5192 | |
2d942bfa | 5193 | object = p->encoding_buf; |
d5db4077 KR |
5194 | encode_coding (coding, (char *) buf, SDATA (object), |
5195 | len, SBYTES (object)); | |
e7fbaa65 | 5196 | len = coding->produced; |
d5db4077 | 5197 | buf = SDATA (object); |
0fa1789e | 5198 | } |
d0d6b7c5 JB |
5199 | |
5200 | #ifdef VMS | |
5201 | vs = get_vms_process_pointer (p->pid); | |
5202 | if (vs == 0) | |
5203 | error ("Could not find this process: %x", p->pid); | |
5204 | else if (write_to_vms_process (vs, buf, len)) | |
5205 | ; | |
0daad115 | 5206 | #else /* not VMS */ |
4556b700 RS |
5207 | |
5208 | if (pty_max_bytes == 0) | |
5209 | { | |
5210 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
2d942bfa | 5211 | pty_max_bytes = fpathconf (XFASTINT (p->outfd), _PC_MAX_CANON); |
4556b700 RS |
5212 | if (pty_max_bytes < 0) |
5213 | pty_max_bytes = 250; | |
5214 | #else | |
5215 | pty_max_bytes = 250; | |
5216 | #endif | |
5217 | /* Deduct one, to leave space for the eof. */ | |
5218 | pty_max_bytes--; | |
5219 | } | |
5220 | ||
0daad115 GM |
5221 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5222 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5223 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5224 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5225 | { |
5226 | process_sent_to = proc; | |
5227 | while (len > 0) | |
5228 | { | |
5229 | int this = len; | |
5230 | SIGTYPE (*old_sigpipe)(); | |
93b4f699 | 5231 | |
0daad115 GM |
5232 | /* Decide how much data we can send in one batch. |
5233 | Long lines need to be split into multiple batches. */ | |
2d942bfa | 5234 | if (!NILP (p->pty_flag)) |
0daad115 | 5235 | { |
c0ec53ad SM |
5236 | /* Starting this at zero is always correct when not the first |
5237 | iteration because the previous iteration ended by sending C-d. | |
0daad115 GM |
5238 | It may not be correct for the first iteration |
5239 | if a partial line was sent in a separate send_process call. | |
5240 | If that proves worth handling, we need to save linepos | |
5241 | in the process object. */ | |
5242 | int linepos = 0; | |
5243 | unsigned char *ptr = (unsigned char *) buf; | |
5244 | unsigned char *end = (unsigned char *) buf + len; | |
5245 | ||
5246 | /* Scan through this text for a line that is too long. */ | |
5247 | while (ptr != end && linepos < pty_max_bytes) | |
5248 | { | |
5249 | if (*ptr == '\n') | |
5250 | linepos = 0; | |
5251 | else | |
5252 | linepos++; | |
5253 | ptr++; | |
5254 | } | |
5255 | /* If we found one, break the line there | |
5256 | and put in a C-d to force the buffer through. */ | |
5257 | this = ptr - buf; | |
5258 | } | |
93b4f699 | 5259 | |
0daad115 GM |
5260 | /* Send this batch, using one or more write calls. */ |
5261 | while (this > 0) | |
5262 | { | |
2d942bfa | 5263 | int outfd = XINT (p->outfd); |
0daad115 | 5264 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5265 | #ifdef DATAGRAM_SOCKETS |
5266 | if (DATAGRAM_CHAN_P (outfd)) | |
5267 | { | |
5268 | rv = sendto (outfd, (char *) buf, this, | |
5269 | 0, datagram_address[outfd].sa, | |
5270 | datagram_address[outfd].len); | |
5271 | if (rv < 0 && errno == EMSGSIZE) | |
5272 | report_file_error ("sending datagram", Fcons (proc, Qnil)); | |
5273 | } | |
5274 | else | |
5275 | #endif | |
2d942bfa KS |
5276 | { |
5277 | rv = emacs_write (outfd, (char *) buf, this); | |
5278 | #ifdef ADAPTIVE_READ_BUFFERING | |
5279 | if (XINT (p->read_output_delay) > 0 | |
5280 | && EQ (p->adaptive_read_buffering, Qt)) | |
5281 | { | |
5282 | XSETFASTINT (p->read_output_delay, 0); | |
5283 | process_output_delay_count--; | |
5284 | p->read_output_skip = Qnil; | |
5285 | } | |
5286 | #endif | |
5287 | } | |
0daad115 | 5288 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5289 | |
0daad115 GM |
5290 | if (rv < 0) |
5291 | { | |
5292 | if (0 | |
d0d6b7c5 | 5293 | #ifdef EWOULDBLOCK |
0daad115 | 5294 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5295 | #endif |
5296 | #ifdef EAGAIN | |
0daad115 | 5297 | || errno == EAGAIN |
d0d6b7c5 | 5298 | #endif |
0daad115 | 5299 | ) |
177c0ea7 | 5300 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5301 | that may allow the program |
5302 | to finish doing output and read more. */ | |
5303 | { | |
5304 | Lisp_Object zero; | |
5305 | int offset = 0; | |
4556b700 | 5306 | |
3433b6bd | 5307 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5308 | /* A gross hack to work around a bug in FreeBSD. |
5309 | In the following sequence, read(2) returns | |
5310 | bogus data: | |
5311 | ||
5312 | write(2) 1022 bytes | |
5313 | write(2) 954 bytes, get EAGAIN | |
5314 | read(2) 1024 bytes in process_read_output | |
5315 | read(2) 11 bytes in process_read_output | |
5316 | ||
5317 | That is, read(2) returns more bytes than have | |
5318 | ever been written successfully. The 1033 bytes | |
5319 | read are the 1022 bytes written successfully | |
5320 | after processing (for example with CRs added if | |
5321 | the terminal is set up that way which it is | |
5322 | here). The same bytes will be seen again in a | |
5323 | later read(2), without the CRs. */ | |
177c0ea7 | 5324 | |
0daad115 GM |
5325 | if (errno == EAGAIN) |
5326 | { | |
5327 | int flags = FWRITE; | |
2d942bfa | 5328 | ioctl (XINT (p->outfd), TIOCFLUSH, &flags); |
0daad115 | 5329 | } |
3433b6bd | 5330 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5331 | |
0daad115 GM |
5332 | /* Running filters might relocate buffers or strings. |
5333 | Arrange to relocate BUF. */ | |
5334 | if (BUFFERP (object)) | |
5335 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); | |
5336 | else if (STRINGP (object)) | |
d5db4077 | 5337 | offset = buf - SDATA (object); |
0daad115 GM |
5338 | |
5339 | XSETFASTINT (zero, 0); | |
f3e6605c | 5340 | #ifdef EMACS_HAS_USECS |
0daad115 | 5341 | wait_reading_process_input (0, 20000, zero, 0); |
f3e6605c | 5342 | #else |
0daad115 | 5343 | wait_reading_process_input (1, 0, zero, 0); |
f3e6605c | 5344 | #endif |
4556b700 | 5345 | |
0daad115 GM |
5346 | if (BUFFERP (object)) |
5347 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); | |
5348 | else if (STRINGP (object)) | |
d5db4077 | 5349 | buf = offset + SDATA (object); |
4556b700 | 5350 | |
0daad115 GM |
5351 | rv = 0; |
5352 | } | |
5353 | else | |
5354 | /* This is a real error. */ | |
5355 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5356 | } | |
5357 | buf += rv; | |
5358 | len -= rv; | |
5359 | this -= rv; | |
5360 | } | |
f76475ad | 5361 | |
0daad115 GM |
5362 | /* If we sent just part of the string, put in an EOF |
5363 | to force it through, before we send the rest. */ | |
5364 | if (len > 0) | |
5365 | Fprocess_send_eof (proc); | |
5366 | } | |
5367 | } | |
5368 | #endif /* not VMS */ | |
d0d6b7c5 JB |
5369 | else |
5370 | { | |
0daad115 GM |
5371 | #ifndef VMS |
5372 | proc = process_sent_to; | |
2d942bfa | 5373 | p = XPROCESS (proc); |
0daad115 | 5374 | #endif |
2d942bfa KS |
5375 | p->raw_status_low = Qnil; |
5376 | p->raw_status_high = Qnil; | |
5377 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5378 | XSETINT (p->tick, ++process_tick); | |
d0d6b7c5 JB |
5379 | deactivate_process (proc); |
5380 | #ifdef VMS | |
2d942bfa | 5381 | error ("Error writing to process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5382 | #else |
2d942bfa | 5383 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5384 | #endif |
5385 | } | |
6044e593 RS |
5386 | |
5387 | UNGCPRO; | |
d0d6b7c5 JB |
5388 | } |
5389 | ||
5390 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5391 | 3, 3, 0, |
5392 | doc: /* Send current contents of region as input to PROCESS. | |
5393 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5394 | nil, indicating the current buffer's process. | |
5395 | Called from program, takes three arguments, PROCESS, START and END. | |
5396 | If the region is more than 500 characters long, | |
5397 | it is sent in several bunches. This may happen even for shorter regions. | |
5398 | Output from processes can arrive in between bunches. */) | |
5399 | (process, start, end) | |
d0d6b7c5 JB |
5400 | Lisp_Object process, start, end; |
5401 | { | |
5402 | Lisp_Object proc; | |
d8a2934e | 5403 | int start1, end1; |
d0d6b7c5 JB |
5404 | |
5405 | proc = get_process (process); | |
5406 | validate_region (&start, &end); | |
5407 | ||
5408 | if (XINT (start) < GPT && XINT (end) > GPT) | |
4da6dec8 | 5409 | move_gap (XINT (start)); |
d0d6b7c5 | 5410 | |
d8a2934e RS |
5411 | start1 = CHAR_TO_BYTE (XINT (start)); |
5412 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5413 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
4556b700 | 5414 | Fcurrent_buffer ()); |
d0d6b7c5 JB |
5415 | |
5416 | return Qnil; | |
5417 | } | |
5418 | ||
5419 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5420 | 2, 2, 0, |
5421 | doc: /* Send PROCESS the contents of STRING as input. | |
5422 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5423 | nil, indicating the current buffer's process. | |
5424 | If STRING is more than 500 characters long, | |
5425 | it is sent in several bunches. This may happen even for shorter strings. | |
5426 | Output from processes can arrive in between bunches. */) | |
5427 | (process, string) | |
d0d6b7c5 JB |
5428 | Lisp_Object process, string; |
5429 | { | |
5430 | Lisp_Object proc; | |
b7826503 | 5431 | CHECK_STRING (string); |
d0d6b7c5 | 5432 | proc = get_process (process); |
d5db4077 KR |
5433 | send_process (proc, SDATA (string), |
5434 | SBYTES (string), string); | |
d0d6b7c5 JB |
5435 | return Qnil; |
5436 | } | |
5437 | \f | |
16782258 JD |
5438 | /* Return the foreground process group for the tty/pty that |
5439 | the process P uses. */ | |
5440 | static int | |
5441 | emacs_get_tty_pgrp (p) | |
5442 | struct Lisp_Process *p; | |
5443 | { | |
5444 | int gid = -1; | |
5445 | ||
5446 | #ifdef TIOCGPGRP | |
5447 | if (ioctl (XINT (p->infd), TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) | |
5448 | { | |
5449 | int fd; | |
5450 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5451 | master side. Try the slave side. */ | |
5452 | fd = emacs_open (XSTRING (p->tty_name)->data, O_RDONLY, 0); | |
5453 | ||
5454 | if (fd != -1) | |
5455 | { | |
5456 | ioctl (fd, TIOCGPGRP, &gid); | |
5457 | emacs_close (fd); | |
5458 | } | |
5459 | } | |
5460 | #endif /* defined (TIOCGPGRP ) */ | |
5461 | ||
5462 | return gid; | |
5463 | } | |
5464 | ||
b81ea5ef RS |
5465 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5466 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5467 | doc: /* Return t if PROCESS has given the terminal to a child. |
5468 | If the operating system does not make it possible to find out, | |
5469 | return t unconditionally. */) | |
5470 | (process) | |
b81ea5ef RS |
5471 | Lisp_Object process; |
5472 | { | |
5473 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5474 | in a way that will cause returning t. */ | |
16782258 | 5475 | int gid; |
b81ea5ef RS |
5476 | Lisp_Object proc; |
5477 | struct Lisp_Process *p; | |
5478 | ||
5479 | proc = get_process (process); | |
5480 | p = XPROCESS (proc); | |
5481 | ||
5482 | if (!EQ (p->childp, Qt)) | |
5483 | error ("Process %s is not a subprocess", | |
d5db4077 | 5484 | SDATA (p->name)); |
b81ea5ef RS |
5485 | if (XINT (p->infd) < 0) |
5486 | error ("Process %s is not active", | |
d5db4077 | 5487 | SDATA (p->name)); |
b81ea5ef | 5488 | |
16782258 | 5489 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef RS |
5490 | |
5491 | if (gid == XFASTINT (p->pid)) | |
5492 | return Qnil; | |
5493 | return Qt; | |
5494 | } | |
5495 | \f | |
d0d6b7c5 | 5496 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5497 | If CURRENT_GROUP is t, that means send to the process group |
5498 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5499 | This is used for various commands in shell mode. |
b81ea5ef RS |
5500 | If CURRENT_GROUP is lambda, that means send to the process group |
5501 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5502 | ||
d0d6b7c5 | 5503 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5504 | right away. |
5505 | ||
5506 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5507 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5508 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5509 | |
f9738840 | 5510 | static void |
d0d6b7c5 JB |
5511 | process_send_signal (process, signo, current_group, nomsg) |
5512 | Lisp_Object process; | |
5513 | int signo; | |
5514 | Lisp_Object current_group; | |
5515 | int nomsg; | |
5516 | { | |
5517 | Lisp_Object proc; | |
5518 | register struct Lisp_Process *p; | |
5519 | int gid; | |
5520 | int no_pgrp = 0; | |
5521 | ||
5522 | proc = get_process (process); | |
5523 | p = XPROCESS (proc); | |
5524 | ||
5525 | if (!EQ (p->childp, Qt)) | |
5526 | error ("Process %s is not a subprocess", | |
d5db4077 | 5527 | SDATA (p->name)); |
a9f2c884 | 5528 | if (XINT (p->infd) < 0) |
d0d6b7c5 | 5529 | error ("Process %s is not active", |
d5db4077 | 5530 | SDATA (p->name)); |
d0d6b7c5 JB |
5531 | |
5532 | if (NILP (p->pty_flag)) | |
5533 | current_group = Qnil; | |
5534 | ||
d0d6b7c5 | 5535 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5536 | if (NILP (current_group)) |
5537 | /* Send the signal to the shell's process group. */ | |
5538 | gid = XFASTINT (p->pid); | |
5539 | else | |
d0d6b7c5 | 5540 | { |
b0310da4 | 5541 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5542 | /* If possible, send signals to the entire pgrp |
5543 | by sending an input character to it. */ | |
b0310da4 | 5544 | |
6be429b1 JB |
5545 | /* TERMIOS is the latest and bestest, and seems most likely to |
5546 | work. If the system has it, use it. */ | |
5547 | #ifdef HAVE_TERMIOS | |
5548 | struct termios t; | |
5549 | ||
5550 | switch (signo) | |
5551 | { | |
5552 | case SIGINT: | |
a9f2c884 | 5553 | tcgetattr (XINT (p->infd), &t); |
4556b700 | 5554 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
a87b802f | 5555 | return; |
6be429b1 JB |
5556 | |
5557 | case SIGQUIT: | |
a9f2c884 | 5558 | tcgetattr (XINT (p->infd), &t); |
4556b700 | 5559 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
a87b802f | 5560 | return; |
6be429b1 JB |
5561 | |
5562 | case SIGTSTP: | |
a9f2c884 | 5563 | tcgetattr (XINT (p->infd), &t); |
d0adf46f | 5564 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
4556b700 | 5565 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
6be429b1 | 5566 | #else |
4556b700 | 5567 | send_process (proc, &t.c_cc[VSUSP], 1, Qnil); |
6be429b1 | 5568 | #endif |
a87b802f | 5569 | return; |
6be429b1 JB |
5570 | } |
5571 | ||
5572 | #else /* ! HAVE_TERMIOS */ | |
5573 | ||
b0310da4 JB |
5574 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5575 | current control characters. */ | |
d0d6b7c5 | 5576 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5577 | |
d0d6b7c5 JB |
5578 | struct tchars c; |
5579 | struct ltchars lc; | |
5580 | ||
5581 | switch (signo) | |
5582 | { | |
5583 | case SIGINT: | |
a9f2c884 | 5584 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5585 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 5586 | return; |
d0d6b7c5 | 5587 | case SIGQUIT: |
a9f2c884 | 5588 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5589 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 5590 | return; |
0ad77c54 | 5591 | #ifdef SIGTSTP |
d0d6b7c5 | 5592 | case SIGTSTP: |
a9f2c884 | 5593 | ioctl (XINT (p->infd), TIOCGLTC, &lc); |
4556b700 | 5594 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 5595 | return; |
b0310da4 | 5596 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5597 | } |
b0310da4 JB |
5598 | |
5599 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
5600 | ||
5601 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
5602 | characters. */ | |
5603 | #ifdef TCGETA | |
d0d6b7c5 JB |
5604 | struct termio t; |
5605 | switch (signo) | |
5606 | { | |
5607 | case SIGINT: | |
a9f2c884 | 5608 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5609 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 5610 | return; |
d0d6b7c5 | 5611 | case SIGQUIT: |
a9f2c884 | 5612 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5613 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 5614 | return; |
7d79e3b4 | 5615 | #ifdef SIGTSTP |
d0d6b7c5 | 5616 | case SIGTSTP: |
a9f2c884 | 5617 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5618 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 5619 | return; |
b0310da4 | 5620 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5621 | } |
b0310da4 JB |
5622 | #else /* ! defined (TCGETA) */ |
5623 | Your configuration files are messed up. | |
5624 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
5625 | you'd better be using one of the alternatives above! */ | |
5626 | #endif /* ! defined (TCGETA) */ | |
5627 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
6be429b1 | 5628 | #endif /* ! defined HAVE_TERMIOS */ |
20505336 RS |
5629 | abort (); |
5630 | /* The code above always returns from the function. */ | |
5631 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ | |
d0d6b7c5 | 5632 | |
177c0ea7 | 5633 | #ifdef TIOCGPGRP |
2af70a0c | 5634 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5635 | Otherwise, use the pty to get the pgrp. |
5636 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5637 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5638 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5639 | His patch indicates that if TIOCGPGRP returns an error, then |
5640 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5641 | |
16782258 JD |
5642 | gid = emacs_get_tty_pgrp (p); |
5643 | ||
5644 | if (gid == -1) | |
5645 | /* If we can't get the information, assume | |
5646 | the shell owns the tty. */ | |
5647 | gid = XFASTINT (p->pid); | |
2af70a0c RS |
5648 | |
5649 | /* It is not clear whether anything really can set GID to -1. | |
5650 | Perhaps on some system one of those ioctls can or could do so. | |
5651 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5652 | if (gid == -1) |
5653 | no_pgrp = 1; | |
b0310da4 | 5654 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5655 | /* Can't select pgrps on this system, so we know that |
5656 | the child itself heads the pgrp. */ | |
2af70a0c | 5657 | gid = XFASTINT (p->pid); |
301c3fe4 | 5658 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5659 | |
5660 | /* If current_group is lambda, and the shell owns the terminal, | |
5661 | don't send any signal. */ | |
2af70a0c | 5662 | if (EQ (current_group, Qlambda) && gid == XFASTINT (p->pid)) |
b81ea5ef | 5663 | return; |
d0d6b7c5 | 5664 | } |
d0d6b7c5 JB |
5665 | |
5666 | switch (signo) | |
5667 | { | |
5668 | #ifdef SIGCONT | |
5669 | case SIGCONT: | |
5670 | p->raw_status_low = Qnil; | |
5671 | p->raw_status_high = Qnil; | |
5672 | p->status = Qrun; | |
5673 | XSETINT (p->tick, ++process_tick); | |
5674 | if (!nomsg) | |
5675 | status_notify (); | |
5676 | break; | |
301c3fe4 | 5677 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 JB |
5678 | case SIGINT: |
5679 | #ifdef VMS | |
4556b700 | 5680 | send_process (proc, "\003", 1, Qnil); /* ^C */ |
d0d6b7c5 JB |
5681 | goto whoosh; |
5682 | #endif | |
5683 | case SIGQUIT: | |
5684 | #ifdef VMS | |
4556b700 | 5685 | send_process (proc, "\031", 1, Qnil); /* ^Y */ |
d0d6b7c5 JB |
5686 | goto whoosh; |
5687 | #endif | |
5688 | case SIGKILL: | |
5689 | #ifdef VMS | |
5690 | sys$forcex (&(XFASTINT (p->pid)), 0, 1); | |
5691 | whoosh: | |
5692 | #endif | |
a9f2c884 | 5693 | flush_pending_output (XINT (p->infd)); |
d0d6b7c5 JB |
5694 | break; |
5695 | } | |
5696 | ||
5697 | /* If we don't have process groups, send the signal to the immediate | |
5698 | subprocess. That isn't really right, but it's better than any | |
5699 | obvious alternative. */ | |
5700 | if (no_pgrp) | |
5701 | { | |
5702 | kill (XFASTINT (p->pid), signo); | |
5703 | return; | |
5704 | } | |
5705 | ||
5706 | /* gid may be a pid, or minus a pgrp's number */ | |
5707 | #ifdef TIOCSIGSEND | |
5708 | if (!NILP (current_group)) | |
16782258 JD |
5709 | { |
5710 | if (ioctl (XINT (p->infd), TIOCSIGSEND, signo) == -1) | |
5711 | EMACS_KILLPG (gid, signo); | |
5712 | } | |
d0d6b7c5 JB |
5713 | else |
5714 | { | |
5715 | gid = - XFASTINT (p->pid); | |
5716 | kill (gid, signo); | |
5717 | } | |
301c3fe4 | 5718 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5719 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5720 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5721 | } |
5722 | ||
5723 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5724 | doc: /* Interrupt process PROCESS. |
5725 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
5726 | nil or no arg means current buffer's process. | |
5727 | Second arg CURRENT-GROUP non-nil means send signal to | |
5728 | the current process-group of the process's controlling terminal | |
5729 | rather than to the process's own process group. | |
5730 | If the process is a shell, this means interrupt current subjob | |
5731 | rather than the shell. | |
5732 | ||
5733 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5734 | don't send the signal. */) | |
5735 | (process, current_group) | |
d0d6b7c5 JB |
5736 | Lisp_Object process, current_group; |
5737 | { | |
5738 | process_send_signal (process, SIGINT, current_group, 0); | |
5739 | return process; | |
5740 | } | |
5741 | ||
5742 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5743 | doc: /* Kill process PROCESS. May be process or name of one. |
5744 | See function `interrupt-process' for more details on usage. */) | |
5745 | (process, current_group) | |
d0d6b7c5 JB |
5746 | Lisp_Object process, current_group; |
5747 | { | |
5748 | process_send_signal (process, SIGKILL, current_group, 0); | |
5749 | return process; | |
5750 | } | |
5751 | ||
5752 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5753 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5754 | See function `interrupt-process' for more details on usage. */) | |
5755 | (process, current_group) | |
d0d6b7c5 JB |
5756 | Lisp_Object process, current_group; |
5757 | { | |
5758 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5759 | return process; | |
5760 | } | |
5761 | ||
5762 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5763 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5764 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5765 | If PROCESS is a network process, inhibit handling of incoming traffic. */) |
fdb82f93 | 5766 | (process, current_group) |
d0d6b7c5 JB |
5767 | Lisp_Object process, current_group; |
5768 | { | |
e690ca94 KS |
5769 | #ifdef HAVE_SOCKETS |
5770 | if (PROCESSP (process) && NETCONN_P (process)) | |
5771 | { | |
5772 | struct Lisp_Process *p; | |
177c0ea7 | 5773 | |
e690ca94 KS |
5774 | p = XPROCESS (process); |
5775 | if (NILP (p->command) | |
5776 | && XINT (p->infd) >= 0) | |
5777 | { | |
5778 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
5779 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
5780 | } | |
5781 | p->command = Qt; | |
5782 | return process; | |
5783 | } | |
5784 | #endif | |
d0d6b7c5 JB |
5785 | #ifndef SIGTSTP |
5786 | error ("no SIGTSTP support"); | |
5787 | #else | |
5788 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5789 | #endif | |
5790 | return process; | |
5791 | } | |
5792 | ||
5793 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5794 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5795 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5796 | If PROCESS is a network process, resume handling of incoming traffic. */) |
fdb82f93 | 5797 | (process, current_group) |
d0d6b7c5 JB |
5798 | Lisp_Object process, current_group; |
5799 | { | |
e690ca94 KS |
5800 | #ifdef HAVE_SOCKETS |
5801 | if (PROCESSP (process) && NETCONN_P (process)) | |
5802 | { | |
5803 | struct Lisp_Process *p; | |
5804 | ||
5805 | p = XPROCESS (process); | |
5806 | if (EQ (p->command, Qt) | |
5807 | && XINT (p->infd) >= 0 | |
5808 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) | |
5809 | { | |
5810 | FD_SET (XINT (p->infd), &input_wait_mask); | |
5811 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
5812 | } | |
5813 | p->command = Qnil; | |
5814 | return process; | |
5815 | } | |
5816 | #endif | |
d0d6b7c5 JB |
5817 | #ifdef SIGCONT |
5818 | process_send_signal (process, SIGCONT, current_group, 0); | |
5819 | #else | |
5820 | error ("no SIGCONT support"); | |
5821 | #endif | |
5822 | return process; | |
5823 | } | |
5824 | ||
5825 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
5826 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
5827 | doc: /* Send PROCESS the signal with code SIGCODE. | |
5828 | PROCESS may also be an integer specifying the process id of the | |
5829 | process to signal; in this case, the process need not be a child of | |
5830 | this Emacs. | |
fdb82f93 | 5831 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
5832 | (process, sigcode) |
5833 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 5834 | { |
cdd5ea86 KS |
5835 | Lisp_Object pid; |
5836 | ||
5837 | if (INTEGERP (process)) | |
5838 | { | |
5839 | pid = process; | |
5840 | goto got_it; | |
5841 | } | |
5842 | ||
5843 | if (STRINGP (process)) | |
5844 | { | |
5845 | Lisp_Object tem; | |
5846 | if (tem = Fget_process (process), NILP (tem)) | |
5847 | { | |
5848 | pid = Fstring_to_number (process, make_number (10)); | |
5849 | if (XINT (pid) != 0) | |
5850 | goto got_it; | |
5851 | } | |
5852 | process = tem; | |
5853 | } | |
5854 | else | |
5855 | process = get_process (process); | |
177c0ea7 | 5856 | |
cdd5ea86 KS |
5857 | if (NILP (process)) |
5858 | return process; | |
5859 | ||
5860 | CHECK_PROCESS (process); | |
5861 | pid = XPROCESS (process)->pid; | |
5862 | if (!INTEGERP (pid) || XINT (pid) <= 0) | |
5863 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); | |
5864 | ||
5865 | got_it: | |
4766242d RS |
5866 | |
5867 | #define handle_signal(NAME, VALUE) \ | |
5868 | else if (!strcmp (name, NAME)) \ | |
5869 | XSETINT (sigcode, VALUE) | |
5870 | ||
5871 | if (INTEGERP (sigcode)) | |
5872 | ; | |
5873 | else | |
5874 | { | |
5875 | unsigned char *name; | |
5876 | ||
b7826503 | 5877 | CHECK_SYMBOL (sigcode); |
d5db4077 | 5878 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d RS |
5879 | |
5880 | if (0) | |
5881 | ; | |
5882 | #ifdef SIGHUP | |
5883 | handle_signal ("SIGHUP", SIGHUP); | |
5884 | #endif | |
5885 | #ifdef SIGINT | |
5886 | handle_signal ("SIGINT", SIGINT); | |
5887 | #endif | |
5888 | #ifdef SIGQUIT | |
5889 | handle_signal ("SIGQUIT", SIGQUIT); | |
5890 | #endif | |
5891 | #ifdef SIGILL | |
5892 | handle_signal ("SIGILL", SIGILL); | |
5893 | #endif | |
5894 | #ifdef SIGABRT | |
5895 | handle_signal ("SIGABRT", SIGABRT); | |
5896 | #endif | |
5897 | #ifdef SIGEMT | |
5898 | handle_signal ("SIGEMT", SIGEMT); | |
5899 | #endif | |
5900 | #ifdef SIGKILL | |
5901 | handle_signal ("SIGKILL", SIGKILL); | |
5902 | #endif | |
5903 | #ifdef SIGFPE | |
5904 | handle_signal ("SIGFPE", SIGFPE); | |
5905 | #endif | |
5906 | #ifdef SIGBUS | |
5907 | handle_signal ("SIGBUS", SIGBUS); | |
5908 | #endif | |
5909 | #ifdef SIGSEGV | |
5910 | handle_signal ("SIGSEGV", SIGSEGV); | |
5911 | #endif | |
5912 | #ifdef SIGSYS | |
5913 | handle_signal ("SIGSYS", SIGSYS); | |
5914 | #endif | |
5915 | #ifdef SIGPIPE | |
5916 | handle_signal ("SIGPIPE", SIGPIPE); | |
5917 | #endif | |
5918 | #ifdef SIGALRM | |
5919 | handle_signal ("SIGALRM", SIGALRM); | |
5920 | #endif | |
5921 | #ifdef SIGTERM | |
5922 | handle_signal ("SIGTERM", SIGTERM); | |
5923 | #endif | |
5924 | #ifdef SIGURG | |
5925 | handle_signal ("SIGURG", SIGURG); | |
5926 | #endif | |
5927 | #ifdef SIGSTOP | |
5928 | handle_signal ("SIGSTOP", SIGSTOP); | |
5929 | #endif | |
5930 | #ifdef SIGTSTP | |
5931 | handle_signal ("SIGTSTP", SIGTSTP); | |
5932 | #endif | |
5933 | #ifdef SIGCONT | |
5934 | handle_signal ("SIGCONT", SIGCONT); | |
5935 | #endif | |
5936 | #ifdef SIGCHLD | |
5937 | handle_signal ("SIGCHLD", SIGCHLD); | |
5938 | #endif | |
5939 | #ifdef SIGTTIN | |
5940 | handle_signal ("SIGTTIN", SIGTTIN); | |
5941 | #endif | |
5942 | #ifdef SIGTTOU | |
5943 | handle_signal ("SIGTTOU", SIGTTOU); | |
5944 | #endif | |
5945 | #ifdef SIGIO | |
5946 | handle_signal ("SIGIO", SIGIO); | |
5947 | #endif | |
5948 | #ifdef SIGXCPU | |
5949 | handle_signal ("SIGXCPU", SIGXCPU); | |
5950 | #endif | |
5951 | #ifdef SIGXFSZ | |
5952 | handle_signal ("SIGXFSZ", SIGXFSZ); | |
5953 | #endif | |
5954 | #ifdef SIGVTALRM | |
5955 | handle_signal ("SIGVTALRM", SIGVTALRM); | |
5956 | #endif | |
5957 | #ifdef SIGPROF | |
5958 | handle_signal ("SIGPROF", SIGPROF); | |
5959 | #endif | |
5960 | #ifdef SIGWINCH | |
5961 | handle_signal ("SIGWINCH", SIGWINCH); | |
5962 | #endif | |
5963 | #ifdef SIGINFO | |
5964 | handle_signal ("SIGINFO", SIGINFO); | |
5965 | #endif | |
5966 | #ifdef SIGUSR1 | |
5967 | handle_signal ("SIGUSR1", SIGUSR1); | |
5968 | #endif | |
5969 | #ifdef SIGUSR2 | |
5970 | handle_signal ("SIGUSR2", SIGUSR2); | |
5971 | #endif | |
5972 | else | |
9fa195a2 | 5973 | error ("Undefined signal name %s", name); |
4766242d RS |
5974 | } |
5975 | ||
5976 | #undef handle_signal | |
5977 | ||
4766242d | 5978 | return make_number (kill (XINT (pid), XINT (sigcode))); |
d0d6b7c5 JB |
5979 | } |
5980 | ||
5981 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
5982 | doc: /* Make PROCESS see end-of-file in its input. |
5983 | EOF comes after any text already sent to it. | |
5984 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5985 | nil, indicating the current buffer's process. | |
5986 | If PROCESS is a network connection, or is a process communicating | |
5987 | through a pipe (as opposed to a pty), then you cannot send any more | |
5988 | text to PROCESS after you call this function. */) | |
5989 | (process) | |
d0d6b7c5 JB |
5990 | Lisp_Object process; |
5991 | { | |
5992 | Lisp_Object proc; | |
de7fbd09 | 5993 | struct coding_system *coding; |
d0d6b7c5 | 5994 | |
e690ca94 KS |
5995 | if (DATAGRAM_CONN_P (process)) |
5996 | return process; | |
5997 | ||
d0d6b7c5 | 5998 | proc = get_process (process); |
de7fbd09 | 5999 | coding = proc_encode_coding_system[XINT (XPROCESS (proc)->outfd)]; |
577d03d5 RS |
6000 | |
6001 | /* Make sure the process is really alive. */ | |
6002 | if (! NILP (XPROCESS (proc)->raw_status_low)) | |
6003 | update_status (XPROCESS (proc)); | |
6004 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6005 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6006 | |
de7fbd09 KH |
6007 | if (CODING_REQUIRE_FLUSHING (coding)) |
6008 | { | |
6009 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6010 | send_process (proc, "", 0, Qnil); | |
6011 | } | |
6012 | ||
d0d6b7c5 | 6013 | #ifdef VMS |
4556b700 | 6014 | send_process (proc, "\032", 1, Qnil); /* ^z */ |
d0d6b7c5 JB |
6015 | #else |
6016 | if (!NILP (XPROCESS (proc)->pty_flag)) | |
4556b700 | 6017 | send_process (proc, "\004", 1, Qnil); |
d0d6b7c5 JB |
6018 | else |
6019 | { | |
4525f571 RS |
6020 | int old_outfd, new_outfd; |
6021 | ||
93853f3d | 6022 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6023 | /* If this is a network connection, or socketpair is used |
6024 | for communication with the subprocess, call shutdown to cause EOF. | |
6025 | (In some old system, shutdown to socketpair doesn't work. | |
6026 | Then we just can't win.) */ | |
6027 | if (NILP (XPROCESS (proc)->pid) | |
6028 | || XINT (XPROCESS (proc)->outfd) == XINT (XPROCESS (proc)->infd)) | |
6029 | shutdown (XINT (XPROCESS (proc)->outfd), 1); | |
6030 | /* In case of socketpair, outfd == infd, so don't close it. */ | |
6031 | if (XINT (XPROCESS (proc)->outfd) != XINT (XPROCESS (proc)->infd)) | |
68c45bf0 | 6032 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6033 | #else /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6034 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6035 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6036 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
4525f571 RS |
6037 | old_outfd = XINT (XPROCESS (proc)->outfd); |
6038 | ||
6039 | if (!proc_encode_coding_system[new_outfd]) | |
6040 | proc_encode_coding_system[new_outfd] | |
6041 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6042 | bcopy (proc_encode_coding_system[old_outfd], | |
6043 | proc_encode_coding_system[new_outfd], | |
6044 | sizeof (struct coding_system)); | |
6045 | bzero (proc_encode_coding_system[old_outfd], | |
6046 | sizeof (struct coding_system)); | |
6047 | ||
6048 | XSETINT (XPROCESS (proc)->outfd, new_outfd); | |
d0d6b7c5 JB |
6049 | } |
6050 | #endif /* VMS */ | |
d0d6b7c5 JB |
6051 | return process; |
6052 | } | |
6053 | ||
6054 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 6055 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 6056 | |
6b53bb85 | 6057 | void |
d0d6b7c5 JB |
6058 | kill_buffer_processes (buffer) |
6059 | Lisp_Object buffer; | |
6060 | { | |
6061 | Lisp_Object tail, proc; | |
6062 | ||
70949dac | 6063 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6064 | { |
70949dac | 6065 | proc = XCDR (XCAR (tail)); |
b5b502d6 | 6066 | if (GC_PROCESSP (proc) |
d0d6b7c5 JB |
6067 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
6068 | { | |
6069 | if (NETCONN_P (proc)) | |
e1ab4959 | 6070 | Fdelete_process (proc); |
a9f2c884 | 6071 | else if (XINT (XPROCESS (proc)->infd) >= 0) |
d0d6b7c5 JB |
6072 | process_send_signal (proc, SIGHUP, Qnil, 1); |
6073 | } | |
6074 | } | |
6075 | } | |
6076 | \f | |
3fed8ad5 GM |
6077 | /* On receipt of a signal that a child status has changed, loop asking |
6078 | about children with changed statuses until the system says there | |
6079 | are no more. | |
177c0ea7 | 6080 | |
3fed8ad5 GM |
6081 | All we do is change the status; we do not run sentinels or print |
6082 | notifications. That is saved for the next time keyboard input is | |
6083 | done, in order to avoid timing errors. | |
6084 | ||
6085 | ** WARNING: this can be called during garbage collection. | |
6086 | Therefore, it must not be fooled by the presence of mark bits in | |
6087 | Lisp objects. | |
6088 | ||
6089 | ** USG WARNING: Although it is not obvious from the documentation | |
6090 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6091 | signal() before executing at least one wait(), otherwise the | |
6092 | handler will be called again, resulting in an infinite loop. The | |
6093 | relevant portion of the documentation reads "SIGCLD signals will be | |
6094 | queued and the signal-catching function will be continually | |
6095 | reentered until the queue is empty". Invoking signal() causes the | |
6096 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6097 | Inc. */ | |
d0d6b7c5 JB |
6098 | |
6099 | SIGTYPE | |
6100 | sigchld_handler (signo) | |
6101 | int signo; | |
6102 | { | |
6103 | int old_errno = errno; | |
6104 | Lisp_Object proc; | |
6105 | register struct Lisp_Process *p; | |
6be429b1 | 6106 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 JB |
6107 | |
6108 | #ifdef BSD4_1 | |
6109 | extern int sigheld; | |
6110 | sigheld |= sigbit (SIGCHLD); | |
6111 | #endif | |
6112 | ||
6113 | while (1) | |
6114 | { | |
6115 | register int pid; | |
6116 | WAITTYPE w; | |
6117 | Lisp_Object tail; | |
6118 | ||
6119 | #ifdef WNOHANG | |
6120 | #ifndef WUNTRACED | |
6121 | #define WUNTRACED 0 | |
6122 | #endif /* no WUNTRACED */ | |
6123 | /* Keep trying to get a status until we get a definitive result. */ | |
177c0ea7 | 6124 | do |
d0d6b7c5 JB |
6125 | { |
6126 | errno = 0; | |
6127 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
6128 | } | |
3fed8ad5 | 6129 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6130 | |
6131 | if (pid <= 0) | |
6132 | { | |
3fed8ad5 GM |
6133 | /* PID == 0 means no processes found, PID == -1 means a real |
6134 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6135 | |
6136 | /* USG systems forget handlers when they are used; | |
6137 | must reestablish each time */ | |
3c0ee47b | 6138 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6139 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
6140 | #endif | |
6141 | #ifdef BSD4_1 | |
6142 | sigheld &= ~sigbit (SIGCHLD); | |
6143 | sigrelse (SIGCHLD); | |
6144 | #endif | |
6145 | errno = old_errno; | |
6146 | return; | |
6147 | } | |
6148 | #else | |
6149 | pid = wait (&w); | |
6150 | #endif /* no WNOHANG */ | |
6151 | ||
6152 | /* Find the process that signaled us, and record its status. */ | |
6153 | ||
6154 | p = 0; | |
3fed8ad5 | 6155 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6156 | { |
70949dac | 6157 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6158 | p = XPROCESS (proc); |
3fed8ad5 | 6159 | if (GC_EQ (p->childp, Qt) && XINT (p->pid) == pid) |
d0d6b7c5 JB |
6160 | break; |
6161 | p = 0; | |
6162 | } | |
6163 | ||
6164 | /* Look for an asynchronous process whose pid hasn't been filled | |
6165 | in yet. */ | |
6166 | if (p == 0) | |
3fed8ad5 | 6167 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6168 | { |
70949dac | 6169 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6170 | p = XPROCESS (proc); |
3fed8ad5 | 6171 | if (GC_INTEGERP (p->pid) && XINT (p->pid) == -1) |
d0d6b7c5 JB |
6172 | break; |
6173 | p = 0; | |
6174 | } | |
177c0ea7 | 6175 | |
d0d6b7c5 JB |
6176 | /* Change the status of the process that was found. */ |
6177 | if (p != 0) | |
6178 | { | |
6179 | union { int i; WAITTYPE wt; } u; | |
e98d950b | 6180 | int clear_desc_flag = 0; |
177c0ea7 | 6181 | |
d0d6b7c5 JB |
6182 | XSETINT (p->tick, ++process_tick); |
6183 | u.wt = w; | |
5fc0154c RS |
6184 | XSETINT (p->raw_status_low, u.i & 0xffff); |
6185 | XSETINT (p->raw_status_high, u.i >> 16); | |
177c0ea7 | 6186 | |
d0d6b7c5 | 6187 | /* If process has terminated, stop waiting for its output. */ |
e98d950b RS |
6188 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
6189 | && XINT (p->infd) >= 0) | |
6190 | clear_desc_flag = 1; | |
6191 | ||
6192 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6193 | if (clear_desc_flag) | |
6194 | { | |
6195 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
6196 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
6197 | } | |
6be429b1 JB |
6198 | |
6199 | /* Tell wait_reading_process_input that it needs to wake up and | |
6200 | look around. */ | |
6201 | if (input_available_clear_time) | |
6202 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6203 | } |
6204 | ||
6205 | /* There was no asynchronous process found for that id. Check | |
6206 | if we have a synchronous process. */ | |
6207 | else | |
6208 | { | |
6209 | synch_process_alive = 0; | |
6210 | ||
6211 | /* Report the status of the synchronous process. */ | |
6212 | if (WIFEXITED (w)) | |
6213 | synch_process_retcode = WRETCODE (w); | |
6214 | else if (WIFSIGNALED (w)) | |
b97ad9ea RS |
6215 | { |
6216 | int code = WTERMSIG (w); | |
68c45bf0 PE |
6217 | char *signame; |
6218 | ||
ca9c0567 | 6219 | synchronize_system_messages_locale (); |
68c45bf0 | 6220 | signame = strsignal (code); |
b97ad9ea | 6221 | |
b97ad9ea RS |
6222 | if (signame == 0) |
6223 | signame = "unknown"; | |
6224 | ||
6225 | synch_process_death = signame; | |
6226 | } | |
6be429b1 JB |
6227 | |
6228 | /* Tell wait_reading_process_input that it needs to wake up and | |
6229 | look around. */ | |
6230 | if (input_available_clear_time) | |
6231 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6232 | } |
6233 | ||
6234 | /* On some systems, we must return right away. | |
6235 | If any more processes want to signal us, we will | |
6236 | get another signal. | |
6237 | Otherwise (on systems that have WNOHANG), loop around | |
6238 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6239 | #if (defined WINDOWSNT \ |
8a2a6032 | 6240 | || (defined USG && !defined GNU_LINUX \ |
4e6277d8 | 6241 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6242 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6243 | signal (signo, sigchld_handler); |
6244 | #endif | |
6245 | errno = old_errno; | |
6246 | return; | |
6247 | #endif /* USG, but not HPUX with WNOHANG */ | |
6248 | } | |
6249 | } | |
6250 | \f | |
6251 | ||
6252 | static Lisp_Object | |
6253 | exec_sentinel_unwind (data) | |
6254 | Lisp_Object data; | |
6255 | { | |
70949dac | 6256 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6257 | return Qnil; |
6258 | } | |
6259 | ||
3b9a3dfa RS |
6260 | static Lisp_Object |
6261 | exec_sentinel_error_handler (error) | |
6262 | Lisp_Object error; | |
6263 | { | |
6264 | cmd_error_internal (error, "error in process sentinel: "); | |
6265 | Vinhibit_quit = Qt; | |
6266 | update_echo_area (); | |
833ba342 | 6267 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6268 | return Qt; |
3b9a3dfa RS |
6269 | } |
6270 | ||
d0d6b7c5 JB |
6271 | static void |
6272 | exec_sentinel (proc, reason) | |
6273 | Lisp_Object proc, reason; | |
6274 | { | |
dfc21838 | 6275 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6276 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6277 | int count = SPECPDL_INDEX (); |
4da2f5be | 6278 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6279 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6280 | |
dfc21838 RS |
6281 | /* No need to gcpro these, because all we do with them later |
6282 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6283 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6284 | XSETBUFFER (obuffer, current_buffer); |
6285 | okeymap = current_buffer->keymap; | |
6286 | ||
d0d6b7c5 JB |
6287 | sentinel = p->sentinel; |
6288 | if (NILP (sentinel)) | |
6289 | return; | |
6290 | ||
6291 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6292 | assure that it gets restored no matter how the sentinel exits. */ | |
6293 | p->sentinel = Qnil; | |
6294 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6295 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6296 | specbind (Qinhibit_quit, Qt); | |
6545aada | 6297 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 6298 | |
4da2f5be RS |
6299 | /* In case we get recursively called, |
6300 | and we already saved the match data nonrecursively, | |
6301 | save the same match data in safely recursive fashion. */ | |
6302 | if (outer_running_asynch_code) | |
6303 | { | |
6304 | Lisp_Object tem; | |
dd130227 | 6305 | tem = Fmatch_data (Qnil, Qnil); |
4da2f5be | 6306 | restore_match_data (); |
8f1ecd05 RS |
6307 | record_unwind_protect (Fset_match_data, Fmatch_data (Qnil, Qnil)); |
6308 | Fset_match_data (tem); | |
4da2f5be RS |
6309 | } |
6310 | ||
6311 | /* For speed, if a search happens within this code, | |
6312 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6313 | running_asynch_code = 1; |
4da2f5be | 6314 | |
3b9a3dfa RS |
6315 | internal_condition_case_1 (read_process_output_call, |
6316 | Fcons (sentinel, | |
6317 | Fcons (proc, Fcons (reason, Qnil))), | |
6318 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6319 | exec_sentinel_error_handler); | |
4da2f5be RS |
6320 | |
6321 | /* If we saved the match data nonrecursively, restore it now. */ | |
7074fde6 | 6322 | restore_match_data (); |
4da2f5be | 6323 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6324 | |
6325 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6326 | |
6327 | /* Restore waiting_for_user_input_p as it was | |
6328 | when we were called, in case the filter clobbered it. */ | |
6329 | waiting_for_user_input_p = waiting; | |
6330 | ||
7973cfa8 | 6331 | #if 0 |
dfc21838 RS |
6332 | if (! EQ (Fcurrent_buffer (), obuffer) |
6333 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6334 | #endif |
927e08be RS |
6335 | /* But do it only if the caller is actually going to read events. |
6336 | Otherwise there's no need to make him wake up, and it could | |
6337 | cause trouble (for example it would make Fsit_for return). */ | |
6338 | if (waiting_for_user_input_p == -1) | |
6339 | record_asynch_buffer_change (); | |
8fb3cf64 | 6340 | |
2ea6d561 | 6341 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6342 | } |
6343 | ||
6344 | /* Report all recent events of a change in process status | |
6345 | (either run the sentinel or output a message). | |
b50fe468 RS |
6346 | This is usually done while Emacs is waiting for keyboard input |
6347 | but can be done at other times. */ | |
d0d6b7c5 | 6348 | |
6b53bb85 | 6349 | void |
d0d6b7c5 JB |
6350 | status_notify () |
6351 | { | |
6352 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6353 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6354 | struct gcpro gcpro1, gcpro2; |
6355 | ||
2e4149a8 KH |
6356 | tail = Qnil; |
6357 | msg = Qnil; | |
d0d6b7c5 JB |
6358 | /* We need to gcpro tail; if read_process_output calls a filter |
6359 | which deletes a process and removes the cons to which tail points | |
6360 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6361 | reference. */ | |
6362 | GCPRO2 (tail, msg); | |
6363 | ||
30623085 RS |
6364 | /* Set this now, so that if new processes are created by sentinels |
6365 | that we run, we get called again to handle their status changes. */ | |
6366 | update_tick = process_tick; | |
6367 | ||
6368 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
d0d6b7c5 | 6369 | { |
30623085 RS |
6370 | Lisp_Object symbol; |
6371 | register struct Lisp_Process *p; | |
6372 | ||
6373 | proc = Fcdr (Fcar (tail)); | |
6374 | p = XPROCESS (proc); | |
6375 | ||
6376 | if (XINT (p->tick) != XINT (p->update_tick)) | |
d0d6b7c5 | 6377 | { |
30623085 | 6378 | XSETINT (p->update_tick, XINT (p->tick)); |
d0d6b7c5 | 6379 | |
30623085 | 6380 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6381 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6382 | && ! EQ (p->status, Qconnect) |
e690ca94 KS |
6383 | && ! EQ (p->status, Qlisten) |
6384 | && ! EQ (p->command, Qt) /* Network process not stopped. */ | |
4da2f5be RS |
6385 | && XINT (p->infd) >= 0 |
6386 | && read_process_output (proc, XINT (p->infd)) > 0); | |
d0d6b7c5 | 6387 | |
30623085 | 6388 | buffer = p->buffer; |
d0d6b7c5 | 6389 | |
30623085 RS |
6390 | /* Get the text to use for the message. */ |
6391 | if (!NILP (p->raw_status_low)) | |
6392 | update_status (p); | |
6393 | msg = status_message (p->status); | |
d0d6b7c5 | 6394 | |
30623085 RS |
6395 | /* If process is terminated, deactivate it or delete it. */ |
6396 | symbol = p->status; | |
6397 | if (CONSP (p->status)) | |
70949dac | 6398 | symbol = XCAR (p->status); |
d0d6b7c5 | 6399 | |
30623085 RS |
6400 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6401 | || EQ (symbol, Qclosed)) | |
6402 | { | |
6403 | if (delete_exited_processes) | |
6404 | remove_process (proc); | |
6405 | else | |
6406 | deactivate_process (proc); | |
6407 | } | |
d0d6b7c5 | 6408 | |
0ad61fe7 RS |
6409 | /* The actions above may have further incremented p->tick. |
6410 | So set p->update_tick again | |
6411 | so that an error in the sentinel will not cause | |
6412 | this code to be run again. */ | |
6413 | XSETINT (p->update_tick, XINT (p->tick)); | |
30623085 RS |
6414 | /* Now output the message suitably. */ |
6415 | if (!NILP (p->sentinel)) | |
6416 | exec_sentinel (proc, msg); | |
6417 | /* Don't bother with a message in the buffer | |
6418 | when a process becomes runnable. */ | |
6419 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6420 | { | |
6421 | Lisp_Object ro, tem; | |
6422 | struct buffer *old = current_buffer; | |
d8a2934e RS |
6423 | int opoint, opoint_byte; |
6424 | int before, before_byte; | |
2e4149a8 | 6425 | |
30623085 | 6426 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 6427 | |
30623085 RS |
6428 | /* Avoid error if buffer is deleted |
6429 | (probably that's why the process is dead, too) */ | |
6430 | if (NILP (XBUFFER (buffer)->name)) | |
6431 | continue; | |
6432 | Fset_buffer (buffer); | |
12ca5cdf | 6433 | |
6ec8bbd2 | 6434 | opoint = PT; |
d8a2934e | 6435 | opoint_byte = PT_BYTE; |
30623085 RS |
6436 | /* Insert new output into buffer |
6437 | at the current end-of-output marker, | |
6438 | thus preserving logical ordering of input and output. */ | |
6439 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6440 | Fgoto_char (p->mark); |
30623085 | 6441 | else |
d8a2934e | 6442 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6443 | |
6444 | before = PT; | |
d8a2934e | 6445 | before_byte = PT_BYTE; |
30623085 RS |
6446 | |
6447 | tem = current_buffer->read_only; | |
6448 | current_buffer->read_only = Qnil; | |
6449 | insert_string ("\nProcess "); | |
6450 | Finsert (1, &p->name); | |
6451 | insert_string (" "); | |
6452 | Finsert (1, &msg); | |
6453 | current_buffer->read_only = tem; | |
d8a2934e | 6454 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6455 | |
12ca5cdf | 6456 | if (opoint >= before) |
d8a2934e RS |
6457 | SET_PT_BOTH (opoint + (PT - before), |
6458 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6459 | else |
d8a2934e | 6460 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6461 | |
30623085 | 6462 | set_buffer_internal (old); |
d0d6b7c5 | 6463 | } |
30623085 RS |
6464 | } |
6465 | } /* end for */ | |
d0d6b7c5 JB |
6466 | |
6467 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
3007ebfb | 6468 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 6469 | |
d0d6b7c5 JB |
6470 | UNGCPRO; |
6471 | } | |
0fa1789e KH |
6472 | |
6473 | \f | |
6474 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6475 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6476 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6477 | DECODING will be used to decode subprocess output and ENCODING to | |
6478 | encode subprocess input. */) | |
6479 | (proc, decoding, encoding) | |
0fa1789e KH |
6480 | register Lisp_Object proc, decoding, encoding; |
6481 | { | |
6482 | register struct Lisp_Process *p; | |
6483 | ||
b7826503 | 6484 | CHECK_PROCESS (proc); |
0fa1789e KH |
6485 | p = XPROCESS (proc); |
6486 | if (XINT (p->infd) < 0) | |
d5db4077 | 6487 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
0fa1789e | 6488 | if (XINT (p->outfd) < 0) |
d5db4077 | 6489 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6490 | Fcheck_coding_system (decoding); |
6491 | Fcheck_coding_system (encoding); | |
0fa1789e | 6492 | |
03f04413 KH |
6493 | p->decode_coding_system = decoding; |
6494 | p->encode_coding_system = encoding; | |
6495 | setup_process_coding_systems (proc); | |
0fa1789e KH |
6496 | |
6497 | return Qnil; | |
6498 | } | |
6499 | ||
6500 | DEFUN ("process-coding-system", | |
6501 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 PJ |
6502 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
6503 | (proc) | |
0fa1789e KH |
6504 | register Lisp_Object proc; |
6505 | { | |
b7826503 | 6506 | CHECK_PROCESS (proc); |
0fa1789e KH |
6507 | return Fcons (XPROCESS (proc)->decode_coding_system, |
6508 | XPROCESS (proc)->encode_coding_system); | |
6509 | } | |
03f04413 KH |
6510 | |
6511 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6512 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6513 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6514 | If FLAG is non-nil, the filter is given multibyte strings. | |
6515 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6516 | all character code conversion except for end-of-line conversion is |
6517 | suppressed. */) | |
6518 | (proc, flag) | |
6519 | Lisp_Object proc, flag; | |
6520 | { | |
6521 | register struct Lisp_Process *p; | |
6522 | ||
6523 | CHECK_PROCESS (proc); | |
6524 | p = XPROCESS (proc); | |
6525 | p->filter_multibyte = flag; | |
6526 | setup_process_coding_systems (proc); | |
6527 | ||
6528 | return Qnil; | |
6529 | } | |
6530 | ||
6531 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6532 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6533 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
6534 | (proc) | |
6535 | Lisp_Object proc; | |
6536 | { | |
6537 | register struct Lisp_Process *p; | |
6538 | ||
6539 | CHECK_PROCESS (proc); | |
6540 | p = XPROCESS (proc); | |
6541 | ||
6542 | return (NILP (p->filter_multibyte) ? Qnil : Qt); | |
6543 | } | |
6544 | ||
6545 | ||
d0d6b7c5 | 6546 | \f |
a69281ff RS |
6547 | void |
6548 | add_keyboard_wait_descriptor (desc) | |
6549 | int desc; | |
6550 | { | |
a69281ff | 6551 | FD_SET (desc, &input_wait_mask); |
b5dc1c83 | 6552 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
6553 | if (desc > max_keyboard_desc) |
6554 | max_keyboard_desc = desc; | |
6555 | } | |
6556 | ||
6557 | /* From now on, do not expect DESC to give keyboard input. */ | |
6558 | ||
6559 | void | |
6560 | delete_keyboard_wait_descriptor (desc) | |
6561 | int desc; | |
6562 | { | |
6563 | int fd; | |
6564 | int lim = max_keyboard_desc; | |
6565 | ||
6566 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 6567 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
6568 | |
6569 | if (desc == max_keyboard_desc) | |
6570 | for (fd = 0; fd < lim; fd++) | |
6571 | if (FD_ISSET (fd, &input_wait_mask) | |
6572 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6573 | max_keyboard_desc = fd; | |
6574 | } | |
6575 | ||
6576 | /* Return nonzero if *MASK has a bit set | |
6577 | that corresponds to one of the keyboard input descriptors. */ | |
6578 | ||
6579 | int | |
6580 | keyboard_bit_set (mask) | |
6581 | SELECT_TYPE *mask; | |
6582 | { | |
6583 | int fd; | |
6584 | ||
ee8e09af | 6585 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
6586 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6587 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6588 | return 1; | |
6589 | ||
6590 | return 0; | |
6591 | } | |
6592 | \f | |
dfcf069d | 6593 | void |
d0d6b7c5 JB |
6594 | init_process () |
6595 | { | |
6596 | register int i; | |
6597 | ||
6598 | #ifdef SIGCHLD | |
6599 | #ifndef CANNOT_DUMP | |
6600 | if (! noninteractive || initialized) | |
6601 | #endif | |
6602 | signal (SIGCHLD, sigchld_handler); | |
6603 | #endif | |
6604 | ||
6605 | FD_ZERO (&input_wait_mask); | |
a69281ff | 6606 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 6607 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 6608 | max_process_desc = 0; |
dd2281ae | 6609 | |
2d942bfa KS |
6610 | #ifdef ADAPTIVE_READ_BUFFERING |
6611 | process_output_delay_count = 0; | |
6612 | process_output_skip = 0; | |
6613 | #endif | |
6614 | ||
c0707982 KL |
6615 | /* Don't do this, it caused infinite select loops. The display |
6616 | method should call add_keyboard_wait_descriptor on stdin if it | |
6617 | needs that. */ | |
6618 | #if 0 | |
a69281ff | 6619 | FD_SET (0, &input_wait_mask); |
c0707982 | 6620 | #endif |
dd2281ae | 6621 | |
d0d6b7c5 JB |
6622 | Vprocess_alist = Qnil; |
6623 | for (i = 0; i < MAXDESC; i++) | |
6624 | { | |
6625 | chan_process[i] = Qnil; | |
6626 | proc_buffered_char[i] = -1; | |
6627 | } | |
c7580538 KH |
6628 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
6629 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
6630 | #ifdef DATAGRAM_SOCKETS |
6631 | bzero (datagram_address, sizeof datagram_address); | |
6632 | #endif | |
9057ff80 | 6633 | |
c2bd2c26 KS |
6634 | #ifdef HAVE_SOCKETS |
6635 | { | |
6636 | Lisp_Object subfeatures = Qnil; | |
2ccf3102 KS |
6637 | struct socket_options *sopt; |
6638 | ||
9057ff80 KS |
6639 | #define ADD_SUBFEATURE(key, val) \ |
6640 | subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures) | |
6641 | ||
9057ff80 | 6642 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 6643 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
6644 | #endif |
6645 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 6646 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 KS |
6647 | #endif |
6648 | #ifdef HAVE_LOCAL_SOCKETS | |
c2bd2c26 | 6649 | ADD_SUBFEATURE (QCfamily, Qlocal); |
9057ff80 KS |
6650 | #endif |
6651 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 6652 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 6653 | #endif |
a8e8ea61 | 6654 | #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY)) |
c2bd2c26 | 6655 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 6656 | #endif |
2ccf3102 KS |
6657 | |
6658 | for (sopt = socket_options; sopt->name; sopt++) | |
6659 | subfeatures = Fcons (intern (sopt->name), subfeatures); | |
6660 | ||
c2bd2c26 KS |
6661 | Fprovide (intern ("make-network-process"), subfeatures); |
6662 | } | |
6663 | #endif /* HAVE_SOCKETS */ | |
d0d6b7c5 | 6664 | } |
312c9964 | 6665 | |
dfcf069d | 6666 | void |
d0d6b7c5 JB |
6667 | syms_of_process () |
6668 | { | |
d0d6b7c5 JB |
6669 | Qprocessp = intern ("processp"); |
6670 | staticpro (&Qprocessp); | |
6671 | Qrun = intern ("run"); | |
6672 | staticpro (&Qrun); | |
6673 | Qstop = intern ("stop"); | |
6674 | staticpro (&Qstop); | |
6675 | Qsignal = intern ("signal"); | |
6676 | staticpro (&Qsignal); | |
6677 | ||
6678 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
6679 | here again. | |
6680 | ||
6681 | Qexit = intern ("exit"); | |
6682 | staticpro (&Qexit); */ | |
6683 | ||
6684 | Qopen = intern ("open"); | |
6685 | staticpro (&Qopen); | |
6686 | Qclosed = intern ("closed"); | |
6687 | staticpro (&Qclosed); | |
dd2a17ab KS |
6688 | Qconnect = intern ("connect"); |
6689 | staticpro (&Qconnect); | |
6690 | Qfailed = intern ("failed"); | |
6691 | staticpro (&Qfailed); | |
e690ca94 KS |
6692 | Qlisten = intern ("listen"); |
6693 | staticpro (&Qlisten); | |
6694 | Qlocal = intern ("local"); | |
6695 | staticpro (&Qlocal); | |
9057ff80 KS |
6696 | Qdatagram = intern ("datagram"); |
6697 | staticpro (&Qdatagram); | |
e690ca94 KS |
6698 | |
6699 | QCname = intern (":name"); | |
6700 | staticpro (&QCname); | |
6701 | QCbuffer = intern (":buffer"); | |
6702 | staticpro (&QCbuffer); | |
6703 | QChost = intern (":host"); | |
6704 | staticpro (&QChost); | |
6705 | QCservice = intern (":service"); | |
6706 | staticpro (&QCservice); | |
9057ff80 KS |
6707 | QCtype = intern (":type"); |
6708 | staticpro (&QCtype); | |
e690ca94 KS |
6709 | QClocal = intern (":local"); |
6710 | staticpro (&QClocal); | |
6711 | QCremote = intern (":remote"); | |
6712 | staticpro (&QCremote); | |
6713 | QCcoding = intern (":coding"); | |
6714 | staticpro (&QCcoding); | |
6715 | QCserver = intern (":server"); | |
6716 | staticpro (&QCserver); | |
e690ca94 KS |
6717 | QCnowait = intern (":nowait"); |
6718 | staticpro (&QCnowait); | |
e690ca94 KS |
6719 | QCsentinel = intern (":sentinel"); |
6720 | staticpro (&QCsentinel); | |
6721 | QClog = intern (":log"); | |
6722 | staticpro (&QClog); | |
6723 | QCnoquery = intern (":noquery"); | |
6724 | staticpro (&QCnoquery); | |
6725 | QCstop = intern (":stop"); | |
6726 | staticpro (&QCstop); | |
6727 | QCoptions = intern (":options"); | |
6728 | staticpro (&QCoptions); | |
faa7db08 KS |
6729 | QCplist = intern (":plist"); |
6730 | staticpro (&QCplist); | |
7392e23c KS |
6731 | QCfilter_multibyte = intern (":filter-multibyte"); |
6732 | staticpro (&QCfilter_multibyte); | |
177c0ea7 | 6733 | |
6545aada RS |
6734 | Qlast_nonmenu_event = intern ("last-nonmenu-event"); |
6735 | staticpro (&Qlast_nonmenu_event); | |
6736 | ||
d0d6b7c5 JB |
6737 | staticpro (&Vprocess_alist); |
6738 | ||
6739 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
fdb82f93 PJ |
6740 | doc: /* *Non-nil means delete processes immediately when they exit. |
6741 | nil means don't delete them until `list-processes' is run. */); | |
d0d6b7c5 JB |
6742 | |
6743 | delete_exited_processes = 1; | |
6744 | ||
6745 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
6746 | doc: /* Control type of device used to communicate with subprocesses. |
6747 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
6748 | The value has no effect if the system has no ptys or if all ptys are busy: | |
6749 | then a pipe is used in any case. | |
6750 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
6751 | Vprocess_connection_type = Qt; |
6752 | ||
2d942bfa KS |
6753 | #ifdef ADAPTIVE_READ_BUFFERING |
6754 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
6755 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
6756 | On some systems, when emacs reads the output from a subprocess, the output data | |
6757 | is read in very small blocks, potentially resulting in very poor performance. | |
6758 | This behaviour can be remedied to some extent by setting this variable to a | |
6759 | non-nil value, as it will automatically delay reading from such processes, to | |
6760 | allowing them to produce more output before emacs tries to read it. | |
6761 | If the value is t, the delay is reset after each write to the process; any other | |
6762 | non-nil value means that the delay is not reset on write. | |
6763 | The variable takes effect when `start-process' is called. */); | |
6764 | Vprocess_adaptive_read_buffering = Qt; | |
6765 | #endif | |
6766 | ||
d0d6b7c5 JB |
6767 | defsubr (&Sprocessp); |
6768 | defsubr (&Sget_process); | |
6769 | defsubr (&Sget_buffer_process); | |
6770 | defsubr (&Sdelete_process); | |
6771 | defsubr (&Sprocess_status); | |
6772 | defsubr (&Sprocess_exit_status); | |
6773 | defsubr (&Sprocess_id); | |
6774 | defsubr (&Sprocess_name); | |
3b9a3dfa | 6775 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
6776 | defsubr (&Sprocess_command); |
6777 | defsubr (&Sset_process_buffer); | |
6778 | defsubr (&Sprocess_buffer); | |
6779 | defsubr (&Sprocess_mark); | |
6780 | defsubr (&Sset_process_filter); | |
6781 | defsubr (&Sprocess_filter); | |
6782 | defsubr (&Sset_process_sentinel); | |
6783 | defsubr (&Sprocess_sentinel); | |
de282a05 | 6784 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
6785 | defsubr (&Sset_process_inherit_coding_system_flag); |
6786 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
6787 | defsubr (&Sset_process_query_on_exit_flag); |
6788 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 6789 | defsubr (&Sprocess_contact); |
faa7db08 KS |
6790 | defsubr (&Sprocess_plist); |
6791 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
6792 | defsubr (&Slist_processes); |
6793 | defsubr (&Sprocess_list); | |
6794 | defsubr (&Sstart_process); | |
6795 | #ifdef HAVE_SOCKETS | |
2ccf3102 | 6796 | defsubr (&Sset_network_process_option); |
e690ca94 | 6797 | defsubr (&Smake_network_process); |
991234f0 | 6798 | defsubr (&Sformat_network_address); |
b8c7fd71 KS |
6799 | #endif /* HAVE_SOCKETS */ |
6800 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
161933c7 KS |
6801 | #ifdef SIOCGIFCONF |
6802 | defsubr (&Snetwork_interface_list); | |
6803 | #endif | |
6804 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
2ccf3102 | 6805 | defsubr (&Snetwork_interface_info); |
161933c7 | 6806 | #endif |
b8c7fd71 | 6807 | #endif /* HAVE_SOCKETS ... */ |
e690ca94 KS |
6808 | #ifdef DATAGRAM_SOCKETS |
6809 | defsubr (&Sprocess_datagram_address); | |
6810 | defsubr (&Sset_process_datagram_address); | |
6811 | #endif | |
d0d6b7c5 JB |
6812 | defsubr (&Saccept_process_output); |
6813 | defsubr (&Sprocess_send_region); | |
6814 | defsubr (&Sprocess_send_string); | |
6815 | defsubr (&Sinterrupt_process); | |
6816 | defsubr (&Skill_process); | |
6817 | defsubr (&Squit_process); | |
6818 | defsubr (&Sstop_process); | |
6819 | defsubr (&Scontinue_process); | |
b81ea5ef | 6820 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
6821 | defsubr (&Sprocess_send_eof); |
6822 | defsubr (&Ssignal_process); | |
6823 | defsubr (&Swaiting_for_user_input_p); | |
6824 | /* defsubr (&Sprocess_connection); */ | |
0fa1789e KH |
6825 | defsubr (&Sset_process_coding_system); |
6826 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
6827 | defsubr (&Sset_process_filter_multibyte); |
6828 | defsubr (&Sprocess_filter_multibyte_p); | |
d0d6b7c5 JB |
6829 | } |
6830 | ||
6720a7fb JB |
6831 | \f |
6832 | #else /* not subprocesses */ | |
6833 | ||
6834 | #include <sys/types.h> | |
6835 | #include <errno.h> | |
6836 | ||
6837 | #include "lisp.h" | |
6838 | #include "systime.h" | |
52a1b894 EZ |
6839 | #include "charset.h" |
6840 | #include "coding.h" | |
6720a7fb | 6841 | #include "termopts.h" |
81afb6d1 | 6842 | #include "sysselect.h" |
6720a7fb | 6843 | |
ff11dfa1 | 6844 | extern int frame_garbaged; |
6720a7fb | 6845 | |
f694e5d2 KH |
6846 | extern EMACS_TIME timer_check (); |
6847 | extern int timers_run; | |
6720a7fb | 6848 | |
9057ff80 KS |
6849 | Lisp_Object QCtype; |
6850 | ||
6720a7fb JB |
6851 | /* As described above, except assuming that there are no subprocesses: |
6852 | ||
6853 | Wait for timeout to elapse and/or keyboard input to be available. | |
6854 | ||
6855 | time_limit is: | |
6856 | timeout in seconds, or | |
6857 | zero for no limit, or | |
6858 | -1 means gobble data immediately available but don't wait for any. | |
6859 | ||
f76475ad | 6860 | read_kbd is a Lisp_Object: |
6720a7fb JB |
6861 | 0 to ignore keyboard input, or |
6862 | 1 to return when input is available, or | |
6863 | -1 means caller will actually read the input, so don't throw to | |
6864 | the quit handler. | |
0a65b032 RS |
6865 | a cons cell, meaning wait until its car is non-nil |
6866 | (and gobble terminal input into the buffer if any arrives), or | |
6720a7fb JB |
6867 | We know that read_kbd will never be a Lisp_Process, since |
6868 | `subprocesses' isn't defined. | |
6869 | ||
6870 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 6871 | output that arrives. |
6720a7fb | 6872 | |
eb8c3be9 | 6873 | Return true iff we received input from any process. */ |
6720a7fb JB |
6874 | |
6875 | int | |
6876 | wait_reading_process_input (time_limit, microsecs, read_kbd, do_display) | |
f76475ad JB |
6877 | int time_limit, microsecs; |
6878 | Lisp_Object read_kbd; | |
6879 | int do_display; | |
6720a7fb | 6880 | { |
52fd88d3 | 6881 | register int nfds; |
f694e5d2 | 6882 | EMACS_TIME end_time, timeout; |
8db121c4 | 6883 | SELECT_TYPE waitchannels; |
f694e5d2 | 6884 | int xerrno; |
f3fbd155 KR |
6885 | /* Either nil or a cons cell, the car of which is of interest and |
6886 | may be changed outside of this routine. */ | |
177c0ea7 | 6887 | Lisp_Object wait_for_cell; |
454fd6b4 RS |
6888 | |
6889 | wait_for_cell = Qnil; | |
0a65b032 RS |
6890 | |
6891 | /* If waiting for non-nil in a cell, record where. */ | |
6892 | if (CONSP (read_kbd)) | |
6893 | { | |
f3fbd155 | 6894 | wait_for_cell = read_kbd; |
0a65b032 RS |
6895 | XSETFASTINT (read_kbd, 0); |
6896 | } | |
6720a7fb JB |
6897 | |
6898 | /* What does time_limit really mean? */ | |
6899 | if (time_limit || microsecs) | |
6900 | { | |
6720a7fb | 6901 | EMACS_GET_TIME (end_time); |
52fd88d3 | 6902 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
6903 | EMACS_ADD_TIME (end_time, end_time, timeout); |
6904 | } | |
6720a7fb JB |
6905 | |
6906 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 6907 | and then turn off any other atimers, |
6720a7fb | 6908 | because the select emulator uses alarms. */ |
75eb23f1 | 6909 | stop_polling (); |
30904ab7 | 6910 | turn_on_atimers (0); |
6720a7fb | 6911 | |
52fd88d3 | 6912 | while (1) |
6720a7fb | 6913 | { |
bae8d137 | 6914 | int timeout_reduced_for_timers = 0; |
6720a7fb | 6915 | |
6720a7fb JB |
6916 | /* If calling from keyboard input, do not quit |
6917 | since we want to return C-g as an input character. | |
6918 | Otherwise, do pending quit if requested. */ | |
f76475ad | 6919 | if (XINT (read_kbd) >= 0) |
6720a7fb JB |
6920 | QUIT; |
6921 | ||
0a65b032 | 6922 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6923 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
6924 | break; |
6925 | ||
bae8d137 RS |
6926 | /* Compute time from now till when time limit is up */ |
6927 | /* Exit if already run out */ | |
52fd88d3 EZ |
6928 | if (time_limit == -1) |
6929 | { | |
6930 | /* -1 specified for timeout means | |
6931 | gobble output available now | |
6932 | but don't wait at all. */ | |
6933 | ||
6934 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
6935 | } | |
6936 | else if (time_limit || microsecs) | |
6720a7fb | 6937 | { |
f694e5d2 KH |
6938 | EMACS_GET_TIME (timeout); |
6939 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
6940 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
6941 | break; |
6942 | } | |
52fd88d3 EZ |
6943 | else |
6944 | { | |
6945 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
6946 | } | |
6720a7fb | 6947 | |
bae8d137 RS |
6948 | /* If our caller will not immediately handle keyboard events, |
6949 | run timer events directly. | |
6950 | (Callers that will immediately read keyboard events | |
6951 | call timer_delay on their own.) */ | |
f3fbd155 | 6952 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6953 | { |
6954 | EMACS_TIME timer_delay; | |
0a65b032 | 6955 | |
9baacf76 | 6956 | do |
0a65b032 | 6957 | { |
9baacf76 GM |
6958 | int old_timers_run = timers_run; |
6959 | timer_delay = timer_check (1); | |
6960 | if (timers_run != old_timers_run && do_display) | |
6961 | /* We must retry, since a timer may have requeued itself | |
6962 | and that could alter the time delay. */ | |
3007ebfb | 6963 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6964 | else |
6965 | break; | |
0a65b032 | 6966 | } |
9baacf76 | 6967 | while (!detect_input_pending ()); |
0a65b032 | 6968 | |
52fd88d3 EZ |
6969 | /* If there is unread keyboard input, also return. */ |
6970 | if (XINT (read_kbd) != 0 | |
6971 | && requeued_events_pending_p ()) | |
6972 | break; | |
6973 | ||
f694e5d2 | 6974 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
6975 | { |
6976 | EMACS_TIME difference; | |
f694e5d2 | 6977 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
6978 | if (EMACS_TIME_NEG_P (difference)) |
6979 | { | |
f694e5d2 | 6980 | timeout = timer_delay; |
bae8d137 RS |
6981 | timeout_reduced_for_timers = 1; |
6982 | } | |
6983 | } | |
6984 | } | |
6985 | ||
6720a7fb JB |
6986 | /* Cause C-g and alarm signals to take immediate action, |
6987 | and cause input available signals to zero out timeout. */ | |
f76475ad | 6988 | if (XINT (read_kbd) < 0) |
6720a7fb JB |
6989 | set_waiting_for_input (&timeout); |
6990 | ||
0a65b032 RS |
6991 | /* Wait till there is something to do. */ |
6992 | ||
f3fbd155 | 6993 | if (! XINT (read_kbd) && NILP (wait_for_cell)) |
0a65b032 RS |
6994 | FD_ZERO (&waitchannels); |
6995 | else | |
6996 | FD_SET (0, &waitchannels); | |
6997 | ||
ff11dfa1 | 6998 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6999 | reprocess its display stuff. */ |
5164ee8e | 7000 | if (frame_garbaged && do_display) |
0a65b032 RS |
7001 | { |
7002 | clear_waiting_for_input (); | |
3007ebfb | 7003 | redisplay_preserve_echo_area (15); |
0a65b032 RS |
7004 | if (XINT (read_kbd) < 0) |
7005 | set_waiting_for_input (&timeout); | |
7006 | } | |
6720a7fb | 7007 | |
1861b214 RS |
7008 | if (XINT (read_kbd) && detect_input_pending ()) |
7009 | { | |
7010 | nfds = 0; | |
7011 | FD_ZERO (&waitchannels); | |
7012 | } | |
7013 | else | |
7014 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7015 | &timeout); | |
f694e5d2 KH |
7016 | |
7017 | xerrno = errno; | |
6720a7fb JB |
7018 | |
7019 | /* Make C-g and alarm signals set flags again */ | |
7020 | clear_waiting_for_input (); | |
7021 | ||
7022 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7023 | do_pending_window_change (0); |
6720a7fb | 7024 | |
f694e5d2 KH |
7025 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7026 | /* We waited the full specified time, so return now. */ | |
7027 | break; | |
7028 | ||
6720a7fb JB |
7029 | if (nfds == -1) |
7030 | { | |
7031 | /* If the system call was interrupted, then go around the | |
7032 | loop again. */ | |
f694e5d2 | 7033 | if (xerrno == EINTR) |
8db121c4 | 7034 | FD_ZERO (&waitchannels); |
f694e5d2 | 7035 | else |
68c45bf0 | 7036 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb JB |
7037 | } |
7038 | #ifdef sun | |
7039 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) | |
7040 | /* System sometimes fails to deliver SIGIO. */ | |
7041 | kill (getpid (), SIGIO); | |
7042 | #endif | |
7324d660 | 7043 | #ifdef SIGIO |
f76475ad | 7044 | if (XINT (read_kbd) && interrupt_input && (waitchannels & 1)) |
e643c5be | 7045 | kill (getpid (), SIGIO); |
7324d660 | 7046 | #endif |
6720a7fb | 7047 | |
f694e5d2 KH |
7048 | /* Check for keyboard input */ |
7049 | ||
78c1afb6 EZ |
7050 | if ((XINT (read_kbd) != 0) |
7051 | && detect_input_pending_run_timers (do_display)) | |
f694e5d2 | 7052 | { |
78c1afb6 | 7053 | swallow_events (do_display); |
f694e5d2 | 7054 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7055 | break; |
78c1afb6 EZ |
7056 | } |
7057 | ||
52fd88d3 EZ |
7058 | /* If there is unread keyboard input, also return. */ |
7059 | if (XINT (read_kbd) != 0 | |
7060 | && requeued_events_pending_p ()) | |
7061 | break; | |
7062 | ||
f854a00b RS |
7063 | /* If wait_for_cell. check for keyboard input |
7064 | but don't run any timers. | |
7065 | ??? (It seems wrong to me to check for keyboard | |
7066 | input at all when wait_for_cell, but the code | |
7067 | has been this way since July 1994. | |
7068 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7069 | if (! NILP (wait_for_cell) |
f854a00b RS |
7070 | && detect_input_pending ()) |
7071 | { | |
7072 | swallow_events (do_display); | |
7073 | if (detect_input_pending ()) | |
7074 | break; | |
7075 | } | |
7076 | ||
0a65b032 | 7077 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7078 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7079 | break; |
6720a7fb JB |
7080 | } |
7081 | ||
a87b802f JB |
7082 | start_polling (); |
7083 | ||
6720a7fb JB |
7084 | return 0; |
7085 | } | |
7086 | ||
7087 | ||
e2ba787b PJ |
7088 | /* Don't confuse make-docfile by having two doc strings for this function. |
7089 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 7090 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
7091 | 0) |
7092 | (name) | |
6720a7fb JB |
7093 | register Lisp_Object name; |
7094 | { | |
7095 | return Qnil; | |
7096 | } | |
7097 | ||
e2ba787b PJ |
7098 | /* Don't confuse make-docfile by having two doc strings for this function. |
7099 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 7100 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7101 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7102 | 1, 1, 0, | |
7103 | 0) | |
7104 | (process) | |
52a1b894 EZ |
7105 | register Lisp_Object process; |
7106 | { | |
7107 | /* Ignore the argument and return the value of | |
7108 | inherit-process-coding-system. */ | |
7109 | return inherit_process_coding_system ? Qt : Qnil; | |
7110 | } | |
7111 | ||
6720a7fb JB |
7112 | /* Kill all processes associated with `buffer'. |
7113 | If `buffer' is nil, kill all processes. | |
7114 | Since we have no subprocesses, this does nothing. */ | |
7115 | ||
d9bb0c32 | 7116 | void |
6720a7fb JB |
7117 | kill_buffer_processes (buffer) |
7118 | Lisp_Object buffer; | |
7119 | { | |
7120 | } | |
7121 | ||
02b9b4fd | 7122 | void |
6720a7fb JB |
7123 | init_process () |
7124 | { | |
7125 | } | |
7126 | ||
02b9b4fd | 7127 | void |
6720a7fb JB |
7128 | syms_of_process () |
7129 | { | |
9057ff80 KS |
7130 | QCtype = intern (":type"); |
7131 | staticpro (&QCtype); | |
7132 | ||
6720a7fb | 7133 | defsubr (&Sget_buffer_process); |
52a1b894 | 7134 | defsubr (&Sprocess_inherit_coding_system_flag); |
6720a7fb JB |
7135 | } |
7136 | ||
7137 | \f | |
7138 | #endif /* not subprocesses */ | |
ab5796a9 MB |
7139 | |
7140 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
7141 | (do not change this comment) */ |