Commit | Line | Data |
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d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
c1120f94 SM |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1998, 1999, |
3 | 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. | |
d0d6b7c5 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
1dc77cc3 | 9 | the Free Software Foundation; either version 2, or (at your option) |
d0d6b7c5 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
d0d6b7c5 JB |
21 | |
22 | ||
18160b98 | 23 | #include <config.h> |
68c45bf0 PE |
24 | #include <signal.h> |
25 | ||
6720a7fb JB |
26 | /* This file is split into two parts by the following preprocessor |
27 | conditional. The 'then' clause contains all of the support for | |
28 | asynchronous subprocesses. The 'else' clause contains stub | |
29 | versions of some of the asynchronous subprocess routines that are | |
30 | often called elsewhere in Emacs, so we don't have to #ifdef the | |
31 | sections that call them. */ | |
32 | ||
33 | \f | |
d0d6b7c5 | 34 | #ifdef subprocesses |
d0d6b7c5 JB |
35 | |
36 | #include <stdio.h> | |
37 | #include <errno.h> | |
38 | #include <setjmp.h> | |
39 | #include <sys/types.h> /* some typedefs are used in sys/file.h */ | |
40 | #include <sys/file.h> | |
41 | #include <sys/stat.h> | |
93b4f699 RS |
42 | #ifdef HAVE_UNISTD_H |
43 | #include <unistd.h> | |
44 | #endif | |
d0d6b7c5 | 45 | |
f22ac298 | 46 | #if defined(WINDOWSNT) || defined(UNIX98_PTYS) |
e98d950b RS |
47 | #include <stdlib.h> |
48 | #include <fcntl.h> | |
49 | #endif /* not WINDOWSNT */ | |
50 | ||
d0d6b7c5 JB |
51 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
52 | #include <sys/socket.h> | |
53 | #include <netdb.h> | |
54 | #include <netinet/in.h> | |
55 | #include <arpa/inet.h> | |
f2cfa9a6 RS |
56 | #ifdef NEED_NET_ERRNO_H |
57 | #include <net/errno.h> | |
58 | #endif /* NEED_NET_ERRNO_H */ | |
e690ca94 KS |
59 | |
60 | /* Are local (unix) sockets supported? */ | |
28c6e94f | 61 | #if defined (HAVE_SYS_UN_H) && !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
e690ca94 KS |
62 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
63 | #define AF_LOCAL AF_UNIX | |
64 | #endif | |
65 | #ifdef AF_LOCAL | |
66 | #define HAVE_LOCAL_SOCKETS | |
67 | #include <sys/un.h> | |
68 | #endif | |
69 | #endif | |
d0d6b7c5 JB |
70 | #endif /* HAVE_SOCKETS */ |
71 | ||
827a1788 | 72 | /* TERM is a poor-man's SLIP, used on GNU/Linux. */ |
1d2c16fa RS |
73 | #ifdef TERM |
74 | #include <client.h> | |
75 | #endif | |
76 | ||
cf32fea0 PR |
77 | /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */ |
78 | #ifdef HAVE_BROKEN_INET_ADDR | |
79967d5e RS |
79 | #define IN_ADDR struct in_addr |
80 | #define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1) | |
81 | #else | |
82 | #define IN_ADDR unsigned long | |
83 | #define NUMERIC_ADDR_ERROR (numeric_addr == -1) | |
84 | #endif | |
85 | ||
6df54671 | 86 | #if defined(BSD_SYSTEM) || defined(STRIDE) |
d0d6b7c5 | 87 | #include <sys/ioctl.h> |
0ad77c54 | 88 | #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5) |
d0d6b7c5 JB |
89 | #include <fcntl.h> |
90 | #endif /* HAVE_PTYS and no O_NDELAY */ | |
6df54671 | 91 | #endif /* BSD_SYSTEM || STRIDE */ |
d0d6b7c5 | 92 | |
99e3d726 RS |
93 | #ifdef BROKEN_O_NONBLOCK |
94 | #undef O_NONBLOCK | |
95 | #endif /* BROKEN_O_NONBLOCK */ | |
96 | ||
d0d6b7c5 JB |
97 | #ifdef NEED_BSDTTY |
98 | #include <bsdtty.h> | |
99 | #endif | |
100 | ||
161933c7 KS |
101 | /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */ |
102 | #ifdef HAVE_SOCKETS | |
103 | #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H) | |
104 | /* sys/ioctl.h may have been included already */ | |
105 | #ifndef SIOCGIFADDR | |
106 | #include <sys/ioctl.h> | |
107 | #endif | |
108 | #include <net/if.h> | |
109 | #endif | |
110 | #endif | |
111 | ||
d0d6b7c5 JB |
112 | #ifdef IRIS |
113 | #include <sys/sysmacros.h> /* for "minor" */ | |
114 | #endif /* not IRIS */ | |
177c0ea7 | 115 | |
e62cab61 DL |
116 | #ifdef HAVE_SYS_WAIT |
117 | #include <sys/wait.h> | |
118 | #endif | |
d0d6b7c5 JB |
119 | |
120 | #include "systime.h" | |
36ebaafa | 121 | #include "systty.h" |
d0d6b7c5 JB |
122 | |
123 | #include "lisp.h" | |
124 | #include "window.h" | |
125 | #include "buffer.h" | |
0fa1789e KH |
126 | #include "charset.h" |
127 | #include "coding.h" | |
d0d6b7c5 JB |
128 | #include "process.h" |
129 | #include "termhooks.h" | |
130 | #include "termopts.h" | |
131 | #include "commands.h" | |
3ec68006 | 132 | #include "keyboard.h" |
1dc77cc3 | 133 | #include "frame.h" |
ececcbec | 134 | #include "blockinput.h" |
dfcf069d | 135 | #include "dispextern.h" |
e0016554 | 136 | #include "composite.h" |
30904ab7 | 137 | #include "atimer.h" |
d0d6b7c5 | 138 | |
dd2281ae | 139 | Lisp_Object Qprocessp; |
dd2a17ab | 140 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 141 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
9057ff80 KS |
142 | Lisp_Object Qlocal, Qdatagram; |
143 | Lisp_Object QCname, QCbuffer, QChost, QCservice, QCtype; | |
e690ca94 | 144 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 145 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 146 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
7392e23c | 147 | Lisp_Object QCfilter_multibyte; |
6545aada | 148 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
149 | /* QCfamily is declared and initialized in xfaces.c, |
150 | QCfilter in keyboard.c. */ | |
151 | extern Lisp_Object QCfamily, QCfilter; | |
152 | ||
d0d6b7c5 JB |
153 | /* Qexit is declared and initialized in eval.c. */ |
154 | ||
e0f712ba AC |
155 | /* QCfamily is defined in xfaces.c. */ |
156 | extern Lisp_Object QCfamily; | |
157 | /* QCfilter is defined in keyboard.c. */ | |
158 | extern Lisp_Object QCfilter; | |
159 | ||
d0d6b7c5 | 160 | /* a process object is a network connection when its childp field is neither |
365aee82 | 161 | Qt nor Qnil but is instead a property list (KEY VAL ...). */ |
d0d6b7c5 JB |
162 | |
163 | #ifdef HAVE_SOCKETS | |
de282a05 | 164 | #define NETCONN_P(p) (GC_CONSP (XPROCESS (p)->childp)) |
e690ca94 | 165 | #define NETCONN1_P(p) (GC_CONSP ((p)->childp)) |
d0d6b7c5 JB |
166 | #else |
167 | #define NETCONN_P(p) 0 | |
e690ca94 | 168 | #define NETCONN1_P(p) 0 |
d0d6b7c5 JB |
169 | #endif /* HAVE_SOCKETS */ |
170 | ||
171 | /* Define first descriptor number available for subprocesses. */ | |
172 | #ifdef VMS | |
173 | #define FIRST_PROC_DESC 1 | |
174 | #else /* Not VMS */ | |
175 | #define FIRST_PROC_DESC 3 | |
176 | #endif | |
177 | ||
178 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
179 | testing SIGCHLD. */ | |
180 | ||
181 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
182 | #define SIGCHLD SIGCLD | |
183 | #endif /* SIGCLD */ | |
184 | ||
185 | #include "syssignal.h" | |
186 | ||
889255b4 | 187 | #include "syswait.h" |
d0d6b7c5 | 188 | |
41d03b9a | 189 | extern void set_waiting_for_input P_ ((EMACS_TIME *)); |
d9e7c622 | 190 | extern char *get_operating_system_release (); |
41d03b9a | 191 | |
3ec68006 | 192 | #ifndef USE_CRT_DLL |
b062d1fe | 193 | extern int errno; |
3ec68006 | 194 | #endif |
b062d1fe | 195 | #ifdef VMS |
d0d6b7c5 | 196 | extern char *sys_errlist[]; |
b062d1fe | 197 | #endif |
d0d6b7c5 | 198 | |
5f0929a7 RS |
199 | #ifndef HAVE_H_ERRNO |
200 | extern int h_errno; | |
201 | #endif | |
202 | ||
d0d6b7c5 JB |
203 | /* t means use pty, nil means use a pipe, |
204 | maybe other values to come. */ | |
dd2281ae | 205 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 JB |
206 | |
207 | #ifdef SKTPAIR | |
208 | #ifndef HAVE_SOCKETS | |
209 | #include <sys/socket.h> | |
210 | #endif | |
211 | #endif /* SKTPAIR */ | |
212 | ||
17d02632 KH |
213 | /* These next two vars are non-static since sysdep.c uses them in the |
214 | emulation of `select'. */ | |
d0d6b7c5 | 215 | /* Number of events of change of status of a process. */ |
17d02632 | 216 | int process_tick; |
d0d6b7c5 | 217 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 218 | int update_tick; |
d0d6b7c5 | 219 | |
dd2a17ab KS |
220 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
221 | ||
222 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
223 | #undef NON_BLOCKING_CONNECT | |
224 | #else | |
225 | #ifndef NON_BLOCKING_CONNECT | |
226 | #ifdef HAVE_SOCKETS | |
227 | #ifdef HAVE_SELECT | |
228 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
229 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
230 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
231 | #define NON_BLOCKING_CONNECT | |
232 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
233 | #endif /* O_NONBLOCK || O_NDELAY */ | |
234 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
235 | #endif /* HAVE_SELECT */ | |
236 | #endif /* HAVE_SOCKETS */ | |
237 | #endif /* NON_BLOCKING_CONNECT */ | |
238 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
239 | ||
e690ca94 KS |
240 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
241 | this system. We need to read full packets, so we need a | |
242 | "non-destructive" select. So we require either native select, | |
243 | or emulation of select using FIONREAD. */ | |
244 | ||
e690ca94 KS |
245 | #ifdef BROKEN_DATAGRAM_SOCKETS |
246 | #undef DATAGRAM_SOCKETS | |
247 | #else | |
248 | #ifndef DATAGRAM_SOCKETS | |
249 | #ifdef HAVE_SOCKETS | |
250 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
251 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
252 | #define DATAGRAM_SOCKETS | |
253 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
254 | #endif /* HAVE_SELECT || FIONREAD */ | |
255 | #endif /* HAVE_SOCKETS */ | |
256 | #endif /* DATAGRAM_SOCKETS */ | |
257 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
258 | ||
dd2a17ab KS |
259 | #ifdef TERM |
260 | #undef NON_BLOCKING_CONNECT | |
e690ca94 | 261 | #undef DATAGRAM_SOCKETS |
dd2a17ab KS |
262 | #endif |
263 | ||
2d942bfa KS |
264 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
265 | #ifdef EMACS_HAS_USECS | |
266 | #define ADAPTIVE_READ_BUFFERING | |
267 | #endif | |
268 | #endif | |
269 | ||
270 | #ifdef ADAPTIVE_READ_BUFFERING | |
271 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
272 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
273 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
274 | ||
275 | /* Number of processes which might be delayed. */ | |
276 | ||
277 | static int process_output_delay_count; | |
278 | ||
279 | /* Non-zero if any process has non-nil process_output_skip. */ | |
280 | ||
281 | static int process_output_skip; | |
282 | ||
283 | /* Non-nil means to delay reading process output to improve buffering. | |
284 | A value of t means that delay is reset after each send, any other | |
285 | non-nil value does not reset the delay. */ | |
286 | static Lisp_Object Vprocess_adaptive_read_buffering; | |
287 | #else | |
288 | #define process_output_delay_count 0 | |
289 | #endif | |
290 | ||
e690ca94 | 291 | |
5886acf9 | 292 | #include "sysselect.h" |
d0d6b7c5 | 293 | |
41d03b9a GM |
294 | extern int keyboard_bit_set P_ ((SELECT_TYPE *)); |
295 | ||
583dcae4 | 296 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 297 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 298 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
299 | #define POLL_FOR_INPUT |
300 | #endif | |
301 | ||
a69281ff | 302 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 303 | |
dd2281ae RS |
304 | static SELECT_TYPE input_wait_mask; |
305 | ||
a69281ff RS |
306 | /* Mask that excludes keyboard input descriptor (s). */ |
307 | ||
308 | static SELECT_TYPE non_keyboard_wait_mask; | |
309 | ||
b5dc1c83 RS |
310 | /* Mask that excludes process input descriptor (s). */ |
311 | ||
312 | static SELECT_TYPE non_process_wait_mask; | |
313 | ||
bad49fc7 | 314 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
315 | /* Mask of bits indicating the descriptors that we wait for connect to |
316 | complete on. Once they complete, they are removed from this mask | |
317 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
318 | ||
319 | static SELECT_TYPE connect_wait_mask; | |
320 | ||
321 | /* Number of bits set in connect_wait_mask. */ | |
322 | static int num_pending_connects; | |
323 | ||
bad49fc7 KS |
324 | #define IF_NON_BLOCKING_CONNECT(s) s |
325 | #else | |
326 | #define IF_NON_BLOCKING_CONNECT(s) | |
327 | #endif | |
328 | ||
7d0e672e RS |
329 | /* The largest descriptor currently in use for a process object. */ |
330 | static int max_process_desc; | |
331 | ||
a69281ff RS |
332 | /* The largest descriptor currently in use for keyboard input. */ |
333 | static int max_keyboard_desc; | |
d0d6b7c5 | 334 | |
dd2281ae RS |
335 | /* Nonzero means delete a process right away if it exits. */ |
336 | static int delete_exited_processes; | |
d0d6b7c5 JB |
337 | |
338 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 339 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
340 | |
341 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 342 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
343 | |
344 | /* Buffered-ahead input char from process, indexed by channel. | |
345 | -1 means empty (no char is buffered). | |
346 | Used on sys V where the only way to tell if there is any | |
347 | output from the process is to read at least one char. | |
348 | Always -1 on systems that support FIONREAD. */ | |
349 | ||
e98d950b RS |
350 | /* Don't make static; need to access externally. */ |
351 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 352 | |
0fa1789e | 353 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
354 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
355 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 356 | |
e690ca94 KS |
357 | #ifdef DATAGRAM_SOCKETS |
358 | /* Table of `partner address' for datagram sockets. */ | |
359 | struct sockaddr_and_len { | |
360 | struct sockaddr *sa; | |
361 | int len; | |
362 | } datagram_address[MAXDESC]; | |
363 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
bed9664a | 364 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0) |
e690ca94 KS |
365 | #else |
366 | #define DATAGRAM_CHAN_P(chan) (0) | |
367 | #define DATAGRAM_CONN_P(proc) (0) | |
368 | #endif | |
369 | ||
dd2281ae | 370 | static Lisp_Object get_process (); |
dd2a17ab | 371 | static void exec_sentinel (); |
93b4f699 | 372 | |
fb4c3627 | 373 | extern EMACS_TIME timer_check (); |
5de50bfb | 374 | extern int timers_run; |
fb4c3627 | 375 | |
93b4f699 RS |
376 | /* Maximum number of bytes to send to a pty without an eof. */ |
377 | static int pty_max_bytes; | |
3b9a3dfa | 378 | |
875e6b94 | 379 | #ifdef HAVE_PTYS |
e62cab61 DL |
380 | #ifdef HAVE_PTY_H |
381 | #include <pty.h> | |
382 | #endif | |
875e6b94 | 383 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
384 | |
385 | static char pty_name[24]; | |
875e6b94 | 386 | #endif |
d0d6b7c5 JB |
387 | \f |
388 | /* Compute the Lisp form of the process status, p->status, from | |
389 | the numeric status that was returned by `wait'. */ | |
390 | ||
f9738840 JB |
391 | Lisp_Object status_convert (); |
392 | ||
dfcf069d | 393 | void |
d0d6b7c5 JB |
394 | update_status (p) |
395 | struct Lisp_Process *p; | |
396 | { | |
397 | union { int i; WAITTYPE wt; } u; | |
398 | u.i = XFASTINT (p->raw_status_low) + (XFASTINT (p->raw_status_high) << 16); | |
399 | p->status = status_convert (u.wt); | |
400 | p->raw_status_low = Qnil; | |
401 | p->raw_status_high = Qnil; | |
402 | } | |
403 | ||
177c0ea7 | 404 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
405 | the list that we use internally. */ |
406 | ||
407 | Lisp_Object | |
408 | status_convert (w) | |
409 | WAITTYPE w; | |
410 | { | |
411 | if (WIFSTOPPED (w)) | |
412 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
413 | else if (WIFEXITED (w)) | |
414 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
415 | WCOREDUMP (w) ? Qt : Qnil)); | |
416 | else if (WIFSIGNALED (w)) | |
417 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
418 | WCOREDUMP (w) ? Qt : Qnil)); | |
419 | else | |
420 | return Qrun; | |
421 | } | |
422 | ||
423 | /* Given a status-list, extract the three pieces of information | |
424 | and store them individually through the three pointers. */ | |
425 | ||
426 | void | |
427 | decode_status (l, symbol, code, coredump) | |
428 | Lisp_Object l; | |
429 | Lisp_Object *symbol; | |
430 | int *code; | |
431 | int *coredump; | |
432 | { | |
433 | Lisp_Object tem; | |
434 | ||
bcd69aea | 435 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
436 | { |
437 | *symbol = l; | |
438 | *code = 0; | |
439 | *coredump = 0; | |
440 | } | |
441 | else | |
442 | { | |
70949dac KR |
443 | *symbol = XCAR (l); |
444 | tem = XCDR (l); | |
445 | *code = XFASTINT (XCAR (tem)); | |
446 | tem = XCDR (tem); | |
d0d6b7c5 JB |
447 | *coredump = !NILP (tem); |
448 | } | |
449 | } | |
450 | ||
451 | /* Return a string describing a process status list. */ | |
452 | ||
116c423c KS |
453 | static Lisp_Object |
454 | status_message (p) | |
455 | struct Lisp_Process *p; | |
d0d6b7c5 | 456 | { |
116c423c | 457 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
458 | Lisp_Object symbol; |
459 | int code, coredump; | |
460 | Lisp_Object string, string2; | |
461 | ||
462 | decode_status (status, &symbol, &code, &coredump); | |
463 | ||
464 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
465 | { | |
68c45bf0 | 466 | char *signame; |
ca9c0567 | 467 | synchronize_system_messages_locale (); |
68c45bf0 | 468 | signame = strsignal (code); |
b97ad9ea RS |
469 | if (signame == 0) |
470 | signame = "unknown"; | |
471 | string = build_string (signame); | |
d0d6b7c5 | 472 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
a814cc69 | 473 | SSET (string, 0, DOWNCASE (SREF (string, 0))); |
d0d6b7c5 JB |
474 | return concat2 (string, string2); |
475 | } | |
476 | else if (EQ (symbol, Qexit)) | |
477 | { | |
116c423c KS |
478 | if (NETCONN1_P (p)) |
479 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
480 | if (code == 0) |
481 | return build_string ("finished\n"); | |
f2980264 | 482 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 483 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
484 | return concat3 (build_string ("exited abnormally with code "), |
485 | string, string2); | |
d0d6b7c5 | 486 | } |
dd2a17ab KS |
487 | else if (EQ (symbol, Qfailed)) |
488 | { | |
489 | string = Fnumber_to_string (make_number (code)); | |
490 | string2 = build_string ("\n"); | |
e690ca94 KS |
491 | return concat3 (build_string ("failed with code "), |
492 | string, string2); | |
dd2a17ab | 493 | } |
d0d6b7c5 JB |
494 | else |
495 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
496 | } | |
497 | \f | |
498 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 499 | |
875e6b94 KH |
500 | /* Open an available pty, returning a file descriptor. |
501 | Return -1 on failure. | |
502 | The file name of the terminal corresponding to the pty | |
503 | is left in the variable pty_name. */ | |
504 | ||
d0d6b7c5 JB |
505 | int |
506 | allocate_pty () | |
507 | { | |
dfcf069d | 508 | register int c, i; |
d0d6b7c5 JB |
509 | int fd; |
510 | ||
511 | #ifdef PTY_ITERATION | |
512 | PTY_ITERATION | |
513 | #else | |
514 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
515 | for (i = 0; i < 16; i++) | |
516 | #endif | |
517 | { | |
26d7389d | 518 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
519 | #ifdef PTY_NAME_SPRINTF |
520 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
521 | #else |
522 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
523 | #endif /* no PTY_NAME_SPRINTF */ |
524 | ||
4d7c105e RS |
525 | #ifdef PTY_OPEN |
526 | PTY_OPEN; | |
527 | #else /* no PTY_OPEN */ | |
34967d0f | 528 | { |
34967d0f SM |
529 | # ifdef IRIS |
530 | /* Unusual IRIS code */ | |
531 | *ptyv = emacs_open ("/dev/ptc", O_RDWR | O_NDELAY, 0); | |
532 | if (fd < 0) | |
533 | return -1; | |
534 | if (fstat (fd, &stb) < 0) | |
535 | return -1; | |
536 | # else /* not IRIS */ | |
537 | { /* Some systems name their pseudoterminals so that there are gaps in | |
538 | the usual sequence - for example, on HP9000/S700 systems, there | |
539 | are no pseudoterminals with names ending in 'f'. So we wait for | |
540 | three failures in a row before deciding that we've reached the | |
541 | end of the ptys. */ | |
542 | int failed_count = 0; | |
f3d9532b | 543 | |
34967d0f SM |
544 | if (stat (pty_name, &stb) < 0) |
545 | { | |
546 | failed_count++; | |
547 | if (failed_count >= 3) | |
548 | return -1; | |
549 | } | |
550 | else | |
551 | failed_count = 0; | |
32676c08 | 552 | } |
34967d0f SM |
553 | # ifdef O_NONBLOCK |
554 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
555 | # else | |
556 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
557 | # endif | |
558 | # endif /* not IRIS */ | |
559 | } | |
4d7c105e | 560 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
561 | |
562 | if (fd >= 0) | |
563 | { | |
564 | /* check to make certain that both sides are available | |
565 | this avoids a nasty yet stupid bug in rlogins */ | |
566 | #ifdef PTY_TTY_NAME_SPRINTF | |
567 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 JB |
568 | #else |
569 | sprintf (pty_name, "/dev/tty%c%x", c, i); | |
d0d6b7c5 JB |
570 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
571 | #ifndef UNIPLUS | |
572 | if (access (pty_name, 6) != 0) | |
573 | { | |
68c45bf0 | 574 | emacs_close (fd); |
34967d0f | 575 | # if !defined(IRIS) && !defined(__sgi) |
d0d6b7c5 | 576 | continue; |
34967d0f | 577 | # else |
d0d6b7c5 | 578 | return -1; |
34967d0f | 579 | # endif /* IRIS */ |
d0d6b7c5 JB |
580 | } |
581 | #endif /* not UNIPLUS */ | |
582 | setup_pty (fd); | |
583 | return fd; | |
584 | } | |
585 | } | |
586 | return -1; | |
587 | } | |
588 | #endif /* HAVE_PTYS */ | |
589 | \f | |
590 | Lisp_Object | |
591 | make_process (name) | |
592 | Lisp_Object name; | |
593 | { | |
594 | register Lisp_Object val, tem, name1; | |
595 | register struct Lisp_Process *p; | |
596 | char suffix[10]; | |
597 | register int i; | |
598 | ||
98423852 | 599 | p = allocate_process (); |
23d6bb9c | 600 | |
1d056e64 KH |
601 | XSETINT (p->infd, -1); |
602 | XSETINT (p->outfd, -1); | |
22719df2 KH |
603 | XSETFASTINT (p->pid, 0); |
604 | XSETFASTINT (p->tick, 0); | |
605 | XSETFASTINT (p->update_tick, 0); | |
d0d6b7c5 JB |
606 | p->raw_status_low = Qnil; |
607 | p->raw_status_high = Qnil; | |
608 | p->status = Qrun; | |
609 | p->mark = Fmake_marker (); | |
610 | ||
2d942bfa KS |
611 | #ifdef ADAPTIVE_READ_BUFFERING |
612 | p->adaptive_read_buffering = Qnil; | |
613 | XSETFASTINT (p->read_output_delay, 0); | |
614 | p->read_output_skip = Qnil; | |
615 | #endif | |
616 | ||
d0d6b7c5 JB |
617 | /* If name is already in use, modify it until it is unused. */ |
618 | ||
619 | name1 = name; | |
620 | for (i = 1; ; i++) | |
621 | { | |
622 | tem = Fget_process (name1); | |
623 | if (NILP (tem)) break; | |
624 | sprintf (suffix, "<%d>", i); | |
625 | name1 = concat2 (name, build_string (suffix)); | |
626 | } | |
627 | name = name1; | |
628 | p->name = name; | |
23d6bb9c | 629 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
630 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
631 | return val; | |
632 | } | |
633 | ||
dfcf069d | 634 | void |
d0d6b7c5 JB |
635 | remove_process (proc) |
636 | register Lisp_Object proc; | |
637 | { | |
638 | register Lisp_Object pair; | |
639 | ||
640 | pair = Frassq (proc, Vprocess_alist); | |
641 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
642 | |
643 | deactivate_process (proc); | |
644 | } | |
03f04413 KH |
645 | |
646 | /* Setup coding systems of PROCESS. */ | |
647 | ||
648 | void | |
649 | setup_process_coding_systems (process) | |
650 | Lisp_Object process; | |
651 | { | |
652 | struct Lisp_Process *p = XPROCESS (process); | |
653 | int inch = XINT (p->infd); | |
654 | int outch = XINT (p->outfd); | |
655 | ||
20f1ef2e KH |
656 | if (inch < 0 || outch < 0) |
657 | return; | |
658 | ||
03f04413 KH |
659 | if (!proc_decode_coding_system[inch]) |
660 | proc_decode_coding_system[inch] | |
661 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
662 | setup_coding_system (p->decode_coding_system, | |
663 | proc_decode_coding_system[inch]); | |
664 | if (! NILP (p->filter)) | |
665 | { | |
666 | if (NILP (p->filter_multibyte)) | |
667 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
668 | } | |
669 | else if (BUFFERP (p->buffer)) | |
670 | { | |
671 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
672 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
673 | } | |
674 | ||
675 | if (!proc_encode_coding_system[outch]) | |
676 | proc_encode_coding_system[outch] | |
677 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
678 | setup_coding_system (p->encode_coding_system, | |
679 | proc_encode_coding_system[outch]); | |
680 | } | |
d0d6b7c5 JB |
681 | \f |
682 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
683 | doc: /* Return t if OBJECT is a process. */) |
684 | (object) | |
4ee3e309 | 685 | Lisp_Object object; |
d0d6b7c5 | 686 | { |
4ee3e309 | 687 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
688 | } |
689 | ||
690 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
691 | doc: /* Return the process named NAME, or nil if there is none. */) |
692 | (name) | |
d0d6b7c5 JB |
693 | register Lisp_Object name; |
694 | { | |
bcd69aea | 695 | if (PROCESSP (name)) |
d0d6b7c5 | 696 | return name; |
b7826503 | 697 | CHECK_STRING (name); |
d0d6b7c5 JB |
698 | return Fcdr (Fassoc (name, Vprocess_alist)); |
699 | } | |
700 | ||
701 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
702 | doc: /* Return the (or a) process associated with BUFFER. |
703 | BUFFER may be a buffer or the name of one. */) | |
704 | (buffer) | |
4ee3e309 | 705 | register Lisp_Object buffer; |
d0d6b7c5 JB |
706 | { |
707 | register Lisp_Object buf, tail, proc; | |
708 | ||
4ee3e309 EN |
709 | if (NILP (buffer)) return Qnil; |
710 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
711 | if (NILP (buf)) return Qnil; |
712 | ||
713 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
714 | { | |
715 | proc = Fcdr (Fcar (tail)); | |
bcd69aea | 716 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
717 | return proc; |
718 | } | |
719 | return Qnil; | |
720 | } | |
721 | ||
ebb9e16f JB |
722 | /* This is how commands for the user decode process arguments. It |
723 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
724 | Buffers denote the first process in the buffer, and nil denotes the | |
725 | current buffer. */ | |
d0d6b7c5 | 726 | |
77b221b1 | 727 | static Lisp_Object |
d0d6b7c5 JB |
728 | get_process (name) |
729 | register Lisp_Object name; | |
730 | { | |
1619761d KH |
731 | register Lisp_Object proc, obj; |
732 | if (STRINGP (name)) | |
733 | { | |
734 | obj = Fget_process (name); | |
735 | if (NILP (obj)) | |
736 | obj = Fget_buffer (name); | |
737 | if (NILP (obj)) | |
d5db4077 | 738 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
739 | } |
740 | else if (NILP (name)) | |
741 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 742 | else |
1619761d KH |
743 | obj = name; |
744 | ||
745 | /* Now obj should be either a buffer object or a process object. | |
746 | */ | |
747 | if (BUFFERP (obj)) | |
d0d6b7c5 | 748 | { |
1619761d | 749 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 750 | if (NILP (proc)) |
d5db4077 | 751 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 752 | } |
d0d6b7c5 | 753 | else |
1619761d | 754 | { |
b7826503 | 755 | CHECK_PROCESS (obj); |
1619761d KH |
756 | proc = obj; |
757 | } | |
758 | return proc; | |
d0d6b7c5 JB |
759 | } |
760 | ||
761 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, | |
fdb82f93 PJ |
762 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
763 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
764 | nil, indicating the current buffer's process. */) | |
765 | (process) | |
4ee3e309 | 766 | register Lisp_Object process; |
d0d6b7c5 | 767 | { |
4ee3e309 EN |
768 | process = get_process (process); |
769 | XPROCESS (process)->raw_status_low = Qnil; | |
770 | XPROCESS (process)->raw_status_high = Qnil; | |
771 | if (NETCONN_P (process)) | |
d0d6b7c5 | 772 | { |
4ee3e309 EN |
773 | XPROCESS (process)->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
774 | XSETINT (XPROCESS (process)->tick, ++process_tick); | |
116c423c | 775 | status_notify (); |
d0d6b7c5 | 776 | } |
4ee3e309 | 777 | else if (XINT (XPROCESS (process)->infd) >= 0) |
d0d6b7c5 | 778 | { |
4ee3e309 | 779 | Fkill_process (process, Qnil); |
d0d6b7c5 | 780 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ |
177c0ea7 | 781 | XPROCESS (process)->status |
d0d6b7c5 | 782 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); |
4ee3e309 | 783 | XSETINT (XPROCESS (process)->tick, ++process_tick); |
d0d6b7c5 JB |
784 | status_notify (); |
785 | } | |
116c423c | 786 | remove_process (process); |
d0d6b7c5 JB |
787 | return Qnil; |
788 | } | |
789 | \f | |
790 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
791 | doc: /* Return the status of PROCESS. |
792 | The returned value is one of the following symbols: | |
793 | run -- for a process that is running. | |
794 | stop -- for a process stopped but continuable. | |
795 | exit -- for a process that has exited. | |
796 | signal -- for a process that has got a fatal signal. | |
797 | open -- for a network stream connection that is open. | |
e690ca94 | 798 | listen -- for a network stream server that is listening. |
fdb82f93 | 799 | closed -- for a network stream connection that is closed. |
e4984112 KS |
800 | connect -- when waiting for a non-blocking connection to complete. |
801 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
802 | nil -- if arg is a process name and no such process exists. |
803 | PROCESS may be a process, a buffer, the name of a process, or | |
804 | nil, indicating the current buffer's process. */) | |
805 | (process) | |
4ee3e309 | 806 | register Lisp_Object process; |
d0d6b7c5 JB |
807 | { |
808 | register struct Lisp_Process *p; | |
809 | register Lisp_Object status; | |
343f4114 | 810 | |
4ee3e309 EN |
811 | if (STRINGP (process)) |
812 | process = Fget_process (process); | |
343f4114 | 813 | else |
4ee3e309 | 814 | process = get_process (process); |
343f4114 | 815 | |
4ee3e309 EN |
816 | if (NILP (process)) |
817 | return process; | |
343f4114 | 818 | |
4ee3e309 | 819 | p = XPROCESS (process); |
d0d6b7c5 JB |
820 | if (!NILP (p->raw_status_low)) |
821 | update_status (p); | |
822 | status = p->status; | |
bcd69aea | 823 | if (CONSP (status)) |
70949dac | 824 | status = XCAR (status); |
e690ca94 | 825 | if (NETCONN1_P (p)) |
d0d6b7c5 | 826 | { |
e690ca94 | 827 | if (EQ (status, Qexit)) |
d0d6b7c5 | 828 | status = Qclosed; |
e690ca94 KS |
829 | else if (EQ (p->command, Qt)) |
830 | status = Qstop; | |
831 | else if (EQ (status, Qrun)) | |
832 | status = Qopen; | |
d0d6b7c5 JB |
833 | } |
834 | return status; | |
835 | } | |
836 | ||
837 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
838 | 1, 1, 0, | |
fdb82f93 PJ |
839 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
840 | If PROCESS has not yet exited or died, return 0. */) | |
841 | (process) | |
4ee3e309 | 842 | register Lisp_Object process; |
d0d6b7c5 | 843 | { |
b7826503 | 844 | CHECK_PROCESS (process); |
4ee3e309 EN |
845 | if (!NILP (XPROCESS (process)->raw_status_low)) |
846 | update_status (XPROCESS (process)); | |
847 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 848 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
849 | return make_number (0); |
850 | } | |
851 | ||
852 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 853 | doc: /* Return the process id of PROCESS. |
f3d9532b | 854 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 PJ |
855 | For a network connection, this value is nil. */) |
856 | (process) | |
4ee3e309 | 857 | register Lisp_Object process; |
d0d6b7c5 | 858 | { |
b7826503 | 859 | CHECK_PROCESS (process); |
4ee3e309 | 860 | return XPROCESS (process)->pid; |
d0d6b7c5 JB |
861 | } |
862 | ||
863 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
864 | doc: /* Return the name of PROCESS, as a string. |
865 | This is the name of the program invoked in PROCESS, | |
866 | possibly modified to make it unique among process names. */) | |
867 | (process) | |
4ee3e309 | 868 | register Lisp_Object process; |
d0d6b7c5 | 869 | { |
b7826503 | 870 | CHECK_PROCESS (process); |
4ee3e309 | 871 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
872 | } |
873 | ||
874 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
875 | doc: /* Return the command that was executed to start PROCESS. |
876 | This is a list of strings, the first string being the program executed | |
877 | and the rest of the strings being the arguments given to it. | |
878 | For a non-child channel, this is nil. */) | |
879 | (process) | |
4ee3e309 | 880 | register Lisp_Object process; |
d0d6b7c5 | 881 | { |
b7826503 | 882 | CHECK_PROCESS (process); |
4ee3e309 | 883 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
884 | } |
885 | ||
3b9a3dfa | 886 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
887 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
888 | This is the terminal that the process itself reads and writes on, | |
889 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
890 | (process) | |
4ee3e309 | 891 | register Lisp_Object process; |
3b9a3dfa | 892 | { |
b7826503 | 893 | CHECK_PROCESS (process); |
4ee3e309 | 894 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
895 | } |
896 | ||
d0d6b7c5 | 897 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
898 | 2, 2, 0, |
899 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
900 | (process, buffer) | |
4ee3e309 | 901 | register Lisp_Object process, buffer; |
d0d6b7c5 | 902 | { |
e690ca94 KS |
903 | struct Lisp_Process *p; |
904 | ||
b7826503 | 905 | CHECK_PROCESS (process); |
d0d6b7c5 | 906 | if (!NILP (buffer)) |
b7826503 | 907 | CHECK_BUFFER (buffer); |
e690ca94 KS |
908 | p = XPROCESS (process); |
909 | p->buffer = buffer; | |
910 | if (NETCONN1_P (p)) | |
911 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); | |
03f04413 | 912 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
913 | return buffer; |
914 | } | |
915 | ||
916 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
917 | 1, 1, 0, |
918 | doc: /* Return the buffer PROCESS is associated with. | |
919 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
920 | (process) | |
4ee3e309 | 921 | register Lisp_Object process; |
d0d6b7c5 | 922 | { |
b7826503 | 923 | CHECK_PROCESS (process); |
4ee3e309 | 924 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
925 | } |
926 | ||
927 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
928 | 1, 1, 0, |
929 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
930 | (process) | |
4ee3e309 | 931 | register Lisp_Object process; |
d0d6b7c5 | 932 | { |
b7826503 | 933 | CHECK_PROCESS (process); |
4ee3e309 | 934 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
935 | } |
936 | ||
937 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
938 | 2, 2, 0, |
939 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
940 | t means stop accepting output from the process. | |
3452df9e KS |
941 | |
942 | When a process has a filter, its buffer is not used for output. | |
943 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 944 | passed to the filter. |
3452df9e | 945 | |
fdb82f93 | 946 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
947 | The string argument is normally a multibyte string, except: |
948 | - if the process' input coding system is no-conversion or raw-text, | |
949 | it is a unibyte string (the non-converted input), or else | |
950 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
951 | string (the result of converting the decoded input multibyte | |
952 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 953 | (process, filter) |
4ee3e309 | 954 | register Lisp_Object process, filter; |
d0d6b7c5 | 955 | { |
471f86b9 | 956 | struct Lisp_Process *p; |
177c0ea7 | 957 | |
b7826503 | 958 | CHECK_PROCESS (process); |
471f86b9 GM |
959 | p = XPROCESS (process); |
960 | ||
961 | /* Don't signal an error if the process' input file descriptor | |
962 | is closed. This could make debugging Lisp more difficult, | |
963 | for example when doing something like | |
964 | ||
965 | (setq process (start-process ...)) | |
966 | (debug) | |
967 | (set-process-filter process ...) */ | |
177c0ea7 | 968 | |
471f86b9 | 969 | if (XINT (p->infd) >= 0) |
a69281ff | 970 | { |
e690ca94 | 971 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 GM |
972 | { |
973 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
974 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
975 | } | |
e690ca94 KS |
976 | else if (EQ (p->filter, Qt) |
977 | && !EQ (p->command, Qt)) /* Network process not stopped. */ | |
471f86b9 GM |
978 | { |
979 | FD_SET (XINT (p->infd), &input_wait_mask); | |
980 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
981 | } | |
a69281ff | 982 | } |
177c0ea7 | 983 | |
471f86b9 | 984 | p->filter = filter; |
e690ca94 KS |
985 | if (NETCONN1_P (p)) |
986 | p->childp = Fplist_put (p->childp, QCfilter, filter); | |
03f04413 | 987 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
988 | return filter; |
989 | } | |
990 | ||
991 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
992 | 1, 1, 0, |
993 | doc: /* Returns the filter function of PROCESS; nil if none. | |
994 | See `set-process-filter' for more info on filter functions. */) | |
995 | (process) | |
4ee3e309 | 996 | register Lisp_Object process; |
d0d6b7c5 | 997 | { |
b7826503 | 998 | CHECK_PROCESS (process); |
4ee3e309 | 999 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1000 | } |
1001 | ||
1002 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1003 | 2, 2, 0, |
1004 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1005 | The sentinel is called as a function when the process changes state. | |
1006 | It gets two arguments: the process, and a string describing the change. */) | |
1007 | (process, sentinel) | |
4ee3e309 | 1008 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 1009 | { |
2ccf3102 KS |
1010 | struct Lisp_Process *p; |
1011 | ||
b7826503 | 1012 | CHECK_PROCESS (process); |
2ccf3102 KS |
1013 | p = XPROCESS (process); |
1014 | ||
1015 | p->sentinel = sentinel; | |
1016 | if (NETCONN1_P (p)) | |
1017 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); | |
d0d6b7c5 JB |
1018 | return sentinel; |
1019 | } | |
1020 | ||
1021 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1022 | 1, 1, 0, |
1023 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1024 | See `set-process-sentinel' for more info on sentinels. */) | |
1025 | (process) | |
4ee3e309 | 1026 | register Lisp_Object process; |
d0d6b7c5 | 1027 | { |
b7826503 | 1028 | CHECK_PROCESS (process); |
4ee3e309 | 1029 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1030 | } |
1031 | ||
396df322 | 1032 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1033 | Sset_process_window_size, 3, 3, 0, |
1034 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
1035 | (process, height, width) | |
4ee3e309 | 1036 | register Lisp_Object process, height, width; |
396df322 | 1037 | { |
b7826503 PJ |
1038 | CHECK_PROCESS (process); |
1039 | CHECK_NATNUM (height); | |
1040 | CHECK_NATNUM (width); | |
177c0ea7 | 1041 | |
989521fd | 1042 | if (XINT (XPROCESS (process)->infd) < 0 |
471f86b9 GM |
1043 | || set_window_size (XINT (XPROCESS (process)->infd), |
1044 | XINT (height), XINT (width)) <= 0) | |
396df322 RS |
1045 | return Qnil; |
1046 | else | |
1047 | return Qt; | |
1048 | } | |
1049 | ||
52a1b894 | 1050 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1051 | Fset_process_inherit_coding_system_flag, |
1052 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1053 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1054 | If the second argument FLAG is non-nil, then the variable | |
1055 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1056 | will be bound to the value of the coding system used to decode | |
1057 | the process output. | |
1058 | ||
1059 | This is useful when the coding system specified for the process buffer | |
1060 | leaves either the character code conversion or the end-of-line conversion | |
1061 | unspecified, or if the coding system used to decode the process output | |
1062 | is more appropriate for saving the process buffer. | |
1063 | ||
1064 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1065 | starting the process is an alternative way of setting the inherit flag | |
1066 | for the process which will run. */) | |
1067 | (process, flag) | |
52a1b894 EZ |
1068 | register Lisp_Object process, flag; |
1069 | { | |
b7826503 | 1070 | CHECK_PROCESS (process); |
aa91317a | 1071 | XPROCESS (process)->inherit_coding_system_flag = flag; |
52a1b894 EZ |
1072 | return flag; |
1073 | } | |
1074 | ||
1075 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1076 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1077 | 1, 1, 0, | |
1078 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1079 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1080 | associated with PROCESS will inherit the coding system used to decode | |
1081 | the process output. */) | |
1082 | (process) | |
52a1b894 EZ |
1083 | register Lisp_Object process; |
1084 | { | |
b7826503 | 1085 | CHECK_PROCESS (process); |
aa91317a | 1086 | return XPROCESS (process)->inherit_coding_system_flag; |
52a1b894 EZ |
1087 | } |
1088 | ||
e690ca94 KS |
1089 | DEFUN ("set-process-query-on-exit-flag", |
1090 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1091 | 2, 2, 0, | |
1092 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1093 | If the second argument FLAG is non-nil, Emacs will query the user before |
e690ca94 KS |
1094 | exiting if PROCESS is running. */) |
1095 | (process, flag) | |
1096 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1097 | { |
b7826503 | 1098 | CHECK_PROCESS (process); |
e690ca94 KS |
1099 | XPROCESS (process)->kill_without_query = Fnull (flag); |
1100 | return flag; | |
d0d6b7c5 | 1101 | } |
312c9964 | 1102 | |
e690ca94 KS |
1103 | DEFUN ("process-query-on-exit-flag", |
1104 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1105 | 1, 1, 0, |
f3d9532b | 1106 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
fdb82f93 | 1107 | (process) |
de282a05 RS |
1108 | register Lisp_Object process; |
1109 | { | |
b7826503 | 1110 | CHECK_PROCESS (process); |
e690ca94 KS |
1111 | return Fnull (XPROCESS (process)->kill_without_query); |
1112 | } | |
1113 | ||
1114 | #ifdef DATAGRAM_SOCKETS | |
1115 | Lisp_Object Fprocess_datagram_address (); | |
1116 | #endif | |
1117 | ||
1118 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1119 | 1, 2, 0, | |
1120 | doc: /* Return the contact info of PROCESS; t for a real child. | |
1121 | For a net connection, the value depends on the optional KEY arg. | |
1122 | If KEY is nil, value is a cons cell of the form (HOST SERVICE), | |
1123 | if KEY is t, the complete contact information for the connection is | |
1124 | returned, else the specific value for the keyword KEY is returned. | |
1125 | See `make-network-process' for a list of keywords. */) | |
1126 | (process, key) | |
1127 | register Lisp_Object process, key; | |
1128 | { | |
1129 | Lisp_Object contact; | |
1130 | ||
1131 | CHECK_PROCESS (process); | |
1132 | contact = XPROCESS (process)->childp; | |
1133 | ||
1134 | #ifdef DATAGRAM_SOCKETS | |
1135 | if (DATAGRAM_CONN_P (process) | |
1136 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1137 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1138 | Fprocess_datagram_address (process)); |
1139 | #endif | |
1140 | ||
1141 | if (!NETCONN_P (process) || EQ (key, Qt)) | |
1142 | return contact; | |
1143 | if (NILP (key)) | |
1144 | return Fcons (Fplist_get (contact, QChost), | |
1145 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
1146 | return Fplist_get (contact, key); | |
de282a05 RS |
1147 | } |
1148 | ||
faa7db08 KS |
1149 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1150 | 1, 1, 0, | |
1151 | doc: /* Return the plist of PROCESS. */) | |
1152 | (process) | |
1153 | register Lisp_Object process; | |
365aee82 | 1154 | { |
ac4a7584 | 1155 | CHECK_PROCESS (process); |
faa7db08 | 1156 | return XPROCESS (process)->plist; |
ac4a7584 | 1157 | } |
365aee82 | 1158 | |
faa7db08 KS |
1159 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1160 | 2, 2, 0, | |
26a086c6 | 1161 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1162 | (process, plist) |
1163 | register Lisp_Object process, plist; | |
ac4a7584 | 1164 | { |
365aee82 | 1165 | CHECK_PROCESS (process); |
faa7db08 | 1166 | CHECK_LIST (plist); |
365aee82 | 1167 | |
faa7db08 | 1168 | XPROCESS (process)->plist = plist; |
26a086c6 | 1169 | return plist; |
365aee82 KS |
1170 | } |
1171 | ||
312c9964 RS |
1172 | #if 0 /* Turned off because we don't currently record this info |
1173 | in the process. Perhaps add it. */ | |
1174 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1175 | doc: /* Return the connection type of PROCESS. |
1176 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1177 | a socket connection. */) | |
1178 | (process) | |
312c9964 RS |
1179 | Lisp_Object process; |
1180 | { | |
1181 | return XPROCESS (process)->type; | |
1182 | } | |
1183 | #endif | |
991234f0 KS |
1184 | |
1185 | #ifdef HAVE_SOCKETS | |
1186 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1187 | 1, 2, 0, |
991234f0 | 1188 | doc: /* Convert network ADDRESS from internal format to a string. |
0dccee41 KS |
1189 | If optional second argument OMIT-PORT is non-nil, don't include a port |
1190 | number in the string; in this case, interpret a 4 element vector as an | |
1191 | IP address. Returns nil if format of ADDRESS is invalid. */) | |
1192 | (address, omit_port) | |
1193 | Lisp_Object address, omit_port; | |
991234f0 | 1194 | { |
991234f0 KS |
1195 | if (NILP (address)) |
1196 | return Qnil; | |
1197 | ||
1198 | if (STRINGP (address)) /* AF_LOCAL */ | |
1199 | return address; | |
1200 | ||
1201 | if (VECTORP (address)) /* AF_INET */ | |
1202 | { | |
1203 | register struct Lisp_Vector *p = XVECTOR (address); | |
1204 | Lisp_Object args[6]; | |
0dccee41 | 1205 | int nargs, i; |
991234f0 | 1206 | |
0dccee41 KS |
1207 | if (!NILP (omit_port) && (p->size == 4 || p->size == 5)) |
1208 | { | |
1209 | args[0] = build_string ("%d.%d.%d.%d"); | |
1210 | nargs = 4; | |
1211 | } | |
1212 | else if (p->size == 5) | |
1213 | { | |
1214 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1215 | nargs = 5; | |
1216 | } | |
1217 | else | |
991234f0 KS |
1218 | return Qnil; |
1219 | ||
0dccee41 KS |
1220 | for (i = 0; i < nargs; i++) |
1221 | args[i+1] = p->contents[i]; | |
1222 | return Fformat (nargs+1, args); | |
991234f0 KS |
1223 | } |
1224 | ||
1225 | if (CONSP (address)) | |
1226 | { | |
1227 | Lisp_Object args[2]; | |
1228 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1229 | args[1] = Fcar (address); |
991234f0 | 1230 | return Fformat (2, args); |
177c0ea7 | 1231 | |
991234f0 KS |
1232 | } |
1233 | ||
1234 | return Qnil; | |
1235 | } | |
1236 | #endif | |
d0d6b7c5 JB |
1237 | \f |
1238 | Lisp_Object | |
e690ca94 KS |
1239 | list_processes_1 (query_only) |
1240 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1241 | { |
1242 | register Lisp_Object tail, tem; | |
1243 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1244 | register struct Lisp_Process *p; |
e690ca94 KS |
1245 | char tembuf[300]; |
1246 | int w_proc, w_buffer, w_tty; | |
1247 | Lisp_Object i_status, i_buffer, i_tty, i_command; | |
1248 | ||
1249 | w_proc = 4; /* Proc */ | |
1250 | w_buffer = 6; /* Buffer */ | |
1251 | w_tty = 0; /* Omit if no ttys */ | |
1252 | ||
1253 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1254 | { | |
1255 | int i; | |
1256 | ||
1257 | proc = Fcdr (Fcar (tail)); | |
1258 | p = XPROCESS (proc); | |
1259 | if (NILP (p->childp)) | |
1260 | continue; | |
1261 | if (!NILP (query_only) && !NILP (p->kill_without_query)) | |
1262 | continue; | |
1263 | if (STRINGP (p->name) | |
d5db4077 | 1264 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1265 | w_proc = i; |
1266 | if (!NILP (p->buffer)) | |
1267 | { | |
1268 | if (NILP (XBUFFER (p->buffer)->name) && w_buffer < 8) | |
1269 | w_buffer = 8; /* (Killed) */ | |
d5db4077 | 1270 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1271 | w_buffer = i; |
1272 | } | |
1273 | if (STRINGP (p->tty_name) | |
d5db4077 | 1274 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1275 | w_tty = i; |
1276 | } | |
1277 | ||
1278 | XSETFASTINT (i_status, w_proc + 1); | |
1279 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1280 | if (w_tty) | |
1281 | { | |
1282 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
1283 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_tty + 1); | |
1284 | } else { | |
1285 | i_tty = Qnil; | |
1286 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1287 | } | |
d0d6b7c5 | 1288 | |
22719df2 | 1289 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1290 | |
1291 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1292 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1293 | |
1294 | current_buffer->truncate_lines = Qt; | |
1295 | ||
e690ca94 KS |
1296 | write_string ("Proc", -1); |
1297 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1298 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1299 | if (!NILP (i_tty)) | |
1300 | { | |
1301 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1302 | } | |
1303 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1304 | write_string ("\n", -1); | |
1305 | ||
1306 | write_string ("----", -1); | |
1307 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1308 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1309 | if (!NILP (i_tty)) | |
1310 | { | |
1311 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1312 | } | |
1313 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1314 | write_string ("\n", -1); | |
d0d6b7c5 JB |
1315 | |
1316 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1317 | { | |
1318 | Lisp_Object symbol; | |
1319 | ||
1320 | proc = Fcdr (Fcar (tail)); | |
1321 | p = XPROCESS (proc); | |
1322 | if (NILP (p->childp)) | |
1323 | continue; | |
e690ca94 KS |
1324 | if (!NILP (query_only) && !NILP (p->kill_without_query)) |
1325 | continue; | |
d0d6b7c5 JB |
1326 | |
1327 | Finsert (1, &p->name); | |
e690ca94 | 1328 | Findent_to (i_status, minspace); |
d0d6b7c5 JB |
1329 | |
1330 | if (!NILP (p->raw_status_low)) | |
1331 | update_status (p); | |
1332 | symbol = p->status; | |
bcd69aea | 1333 | if (CONSP (p->status)) |
70949dac | 1334 | symbol = XCAR (p->status); |
d0d6b7c5 | 1335 | |
177c0ea7 | 1336 | |
d0d6b7c5 JB |
1337 | if (EQ (symbol, Qsignal)) |
1338 | { | |
1339 | Lisp_Object tem; | |
1340 | tem = Fcar (Fcdr (p->status)); | |
1341 | #ifdef VMS | |
1342 | if (XINT (tem) < NSIG) | |
b0310da4 | 1343 | write_string (sys_errlist [XINT (tem)], -1); |
d0d6b7c5 JB |
1344 | else |
1345 | #endif | |
1346 | Fprinc (symbol, Qnil); | |
1347 | } | |
e690ca94 | 1348 | else if (NETCONN1_P (p)) |
d0d6b7c5 | 1349 | { |
e690ca94 | 1350 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1351 | write_string ("closed", -1); |
e690ca94 KS |
1352 | else if (EQ (p->command, Qt)) |
1353 | write_string ("stopped", -1); | |
1354 | else if (EQ (symbol, Qrun)) | |
1355 | write_string ("open", -1); | |
d0d6b7c5 JB |
1356 | else |
1357 | Fprinc (symbol, Qnil); | |
1358 | } | |
1359 | else | |
1360 | Fprinc (symbol, Qnil); | |
1361 | ||
1362 | if (EQ (symbol, Qexit)) | |
1363 | { | |
1364 | Lisp_Object tem; | |
1365 | tem = Fcar (Fcdr (p->status)); | |
1366 | if (XFASTINT (tem)) | |
1367 | { | |
3162bafa | 1368 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1369 | write_string (tembuf, -1); |
1370 | } | |
1371 | } | |
1372 | ||
1373 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
1374 | remove_process (proc); | |
1375 | ||
e690ca94 | 1376 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1377 | if (NILP (p->buffer)) |
1378 | insert_string ("(none)"); | |
1379 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1380 | insert_string ("(Killed)"); | |
1381 | else | |
1382 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1383 | ||
e690ca94 KS |
1384 | if (!NILP (i_tty)) |
1385 | { | |
1386 | Findent_to (i_tty, minspace); | |
1387 | if (STRINGP (p->tty_name)) | |
1388 | Finsert (1, &p->tty_name); | |
1389 | } | |
a9fde32e | 1390 | |
e690ca94 | 1391 | Findent_to (i_command, minspace); |
a9fde32e | 1392 | |
e690ca94 KS |
1393 | if (EQ (p->status, Qlisten)) |
1394 | { | |
1395 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1396 | if (INTEGERP (port)) | |
1397 | port = Fnumber_to_string (port); | |
991234f0 | 1398 | if (NILP (port)) |
0dccee41 | 1399 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1400 | sprintf (tembuf, "(network %s server on %s)\n", |
bed9664a | 1401 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1402 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1403 | insert_string (tembuf); |
1404 | } | |
1405 | else if (NETCONN1_P (p)) | |
d0d6b7c5 | 1406 | { |
e690ca94 KS |
1407 | /* For a local socket, there is no host name, |
1408 | so display service instead. */ | |
1409 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1410 | if (!STRINGP (host)) | |
1411 | { | |
1412 | host = Fplist_get (p->childp, QCservice); | |
1413 | if (INTEGERP (host)) | |
1414 | host = Fnumber_to_string (host); | |
1415 | } | |
991234f0 | 1416 | if (NILP (host)) |
0dccee41 | 1417 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1418 | sprintf (tembuf, "(network %s connection to %s)\n", |
bed9664a | 1419 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1420 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 JB |
1421 | insert_string (tembuf); |
1422 | } | |
177c0ea7 | 1423 | else |
d0d6b7c5 JB |
1424 | { |
1425 | tem = p->command; | |
1426 | while (1) | |
1427 | { | |
1428 | tem1 = Fcar (tem); | |
1429 | Finsert (1, &tem1); | |
1430 | tem = Fcdr (tem); | |
1431 | if (NILP (tem)) | |
1432 | break; | |
1433 | insert_string (" "); | |
1434 | } | |
1435 | insert_string ("\n"); | |
1436 | } | |
1437 | } | |
1438 | return Qnil; | |
1439 | } | |
1440 | ||
e690ca94 | 1441 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1442 | doc: /* Display a list of all processes. |
e690ca94 KS |
1443 | If optional argument QUERY-ONLY is non-nil, only processes with |
1444 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1445 | Any process listed as exited or signaled is actually eliminated |
1446 | after the listing is made. */) | |
e690ca94 KS |
1447 | (query_only) |
1448 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1449 | { |
1450 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1451 | list_processes_1, query_only); |
d0d6b7c5 JB |
1452 | return Qnil; |
1453 | } | |
1454 | ||
1455 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1456 | doc: /* Return a list of all processes. */) |
1457 | () | |
d0d6b7c5 JB |
1458 | { |
1459 | return Fmapcar (Qcdr, Vprocess_alist); | |
1460 | } | |
1461 | \f | |
b0310da4 JB |
1462 | /* Starting asynchronous inferior processes. */ |
1463 | ||
1464 | static Lisp_Object start_process_unwind (); | |
1465 | ||
d0d6b7c5 | 1466 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1467 | doc: /* Start a program in a subprocess. Return the process object for it. |
1468 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1469 | BUFFER is the buffer (or buffer name) to associate with the process. |
fdb82f93 PJ |
1470 | Process output goes at end of that buffer, unless you specify |
1471 | an output stream or filter function to handle the output. | |
1472 | BUFFER may be also nil, meaning that this process is not associated | |
1473 | with any buffer. | |
553acde5 | 1474 | PROGRAM is the program file name. It is searched for in PATH. |
3ecdf100 | 1475 | Remaining arguments are strings to give program as arguments. |
320aebc9 | 1476 | |
3ecdf100 | 1477 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1478 | (nargs, args) |
d0d6b7c5 JB |
1479 | int nargs; |
1480 | register Lisp_Object *args; | |
1481 | { | |
1e30af70 | 1482 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 JB |
1483 | #ifdef VMS |
1484 | register unsigned char *new_argv; | |
1485 | int len; | |
1486 | #else | |
1487 | register unsigned char **new_argv; | |
1488 | #endif | |
1489 | register int i; | |
aed13378 | 1490 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1491 | |
1492 | buffer = args[1]; | |
1493 | if (!NILP (buffer)) | |
1494 | buffer = Fget_buffer_create (buffer); | |
1495 | ||
1e30af70 JB |
1496 | /* Make sure that the child will be able to chdir to the current |
1497 | buffer's current directory, or its unhandled equivalent. We | |
1498 | can't just have the child check for an error when it does the | |
1499 | chdir, since it's in a vfork. | |
1500 | ||
1501 | We have to GCPRO around this because Fexpand_file_name and | |
1502 | Funhandled_file_name_directory might call a file name handling | |
1503 | function. The argument list is protected by the caller, so all | |
1504 | we really have to worry about is buffer. */ | |
1505 | { | |
1506 | struct gcpro gcpro1, gcpro2; | |
1507 | ||
1508 | current_dir = current_buffer->directory; | |
1509 | ||
1510 | GCPRO2 (buffer, current_dir); | |
1511 | ||
177c0ea7 | 1512 | current_dir |
7af71e17 RS |
1513 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), |
1514 | Qnil); | |
1e30af70 JB |
1515 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1516 | report_file_error ("Setting current directory", | |
1517 | Fcons (current_buffer->directory, Qnil)); | |
1518 | ||
1519 | UNGCPRO; | |
1520 | } | |
1521 | ||
d0d6b7c5 | 1522 | name = args[0]; |
b7826503 | 1523 | CHECK_STRING (name); |
d0d6b7c5 JB |
1524 | |
1525 | program = args[2]; | |
1526 | ||
b7826503 | 1527 | CHECK_STRING (program); |
d0d6b7c5 | 1528 | |
d0d6b7c5 | 1529 | proc = make_process (name); |
b0310da4 JB |
1530 | /* If an error occurs and we can't start the process, we want to |
1531 | remove it from the process list. This means that each error | |
1532 | check in create_process doesn't need to call remove_process | |
1533 | itself; it's all taken care of here. */ | |
1534 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1535 | |
1536 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1537 | XPROCESS (proc)->plist = Qnil; |
d0d6b7c5 JB |
1538 | XPROCESS (proc)->command_channel_p = Qnil; |
1539 | XPROCESS (proc)->buffer = buffer; | |
1540 | XPROCESS (proc)->sentinel = Qnil; | |
1541 | XPROCESS (proc)->filter = Qnil; | |
03f04413 KH |
1542 | XPROCESS (proc)->filter_multibyte |
1543 | = buffer_defaults.enable_multibyte_characters; | |
d0d6b7c5 JB |
1544 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); |
1545 | ||
2d942bfa KS |
1546 | #ifdef ADAPTIVE_READ_BUFFERING |
1547 | XPROCESS (proc)->adaptive_read_buffering = Vprocess_adaptive_read_buffering; | |
1548 | #endif | |
1549 | ||
7af71e17 RS |
1550 | /* Make the process marker point into the process buffer (if any). */ |
1551 | if (!NILP (buffer)) | |
d8a2934e RS |
1552 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1553 | BUF_ZV (XBUFFER (buffer)), | |
1554 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1555 | |
67918941 | 1556 | { |
d5d4ae71 KH |
1557 | /* Decide coding systems for communicating with the process. Here |
1558 | we don't setup the structure coding_system nor pay attention to | |
1559 | unibyte mode. They are done in create_process. */ | |
1560 | ||
67918941 RS |
1561 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1562 | Lisp_Object coding_systems = Qt; | |
1563 | Lisp_Object val, *args2; | |
a4a37e65 | 1564 | struct gcpro gcpro1, gcpro2; |
67918941 | 1565 | |
d5d4ae71 KH |
1566 | val = Vcoding_system_for_read; |
1567 | if (NILP (val)) | |
67918941 RS |
1568 | { |
1569 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1570 | args2[0] = Qstart_process; | |
1571 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1572 | GCPRO2 (proc, current_dir); |
67918941 RS |
1573 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1574 | UNGCPRO; | |
1575 | if (CONSP (coding_systems)) | |
70949dac | 1576 | val = XCAR (coding_systems); |
67918941 | 1577 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1578 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1579 | } |
1580 | XPROCESS (proc)->decode_coding_system = val; | |
1581 | ||
d5d4ae71 KH |
1582 | val = Vcoding_system_for_write; |
1583 | if (NILP (val)) | |
67918941 RS |
1584 | { |
1585 | if (EQ (coding_systems, Qt)) | |
1586 | { | |
1587 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1588 | args2[0] = Qstart_process; | |
1589 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1590 | GCPRO2 (proc, current_dir); |
67918941 RS |
1591 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1592 | UNGCPRO; | |
1593 | } | |
1594 | if (CONSP (coding_systems)) | |
70949dac | 1595 | val = XCDR (coding_systems); |
67918941 | 1596 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1597 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1598 | } |
1599 | XPROCESS (proc)->encode_coding_system = val; | |
1600 | } | |
0fa1789e | 1601 | |
a4a37e65 KH |
1602 | #ifdef VMS |
1603 | /* Make a one member argv with all args concatenated | |
1604 | together separated by a blank. */ | |
d5db4077 | 1605 | len = SBYTES (program) + 2; |
a4a37e65 KH |
1606 | for (i = 3; i < nargs; i++) |
1607 | { | |
1608 | tem = args[i]; | |
b7826503 | 1609 | CHECK_STRING (tem); |
d5db4077 | 1610 | len += SBYTES (tem) + 1; /* count the blank */ |
a4a37e65 KH |
1611 | } |
1612 | new_argv = (unsigned char *) alloca (len); | |
d5db4077 | 1613 | strcpy (new_argv, SDATA (program)); |
a4a37e65 KH |
1614 | for (i = 3; i < nargs; i++) |
1615 | { | |
1616 | tem = args[i]; | |
b7826503 | 1617 | CHECK_STRING (tem); |
a4a37e65 | 1618 | strcat (new_argv, " "); |
d5db4077 | 1619 | strcat (new_argv, SDATA (tem)); |
a4a37e65 KH |
1620 | } |
1621 | /* Need to add code here to check for program existence on VMS */ | |
177c0ea7 | 1622 | |
a4a37e65 KH |
1623 | #else /* not VMS */ |
1624 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1625 | ||
ed30cf85 RS |
1626 | /* If program file name is not absolute, search our path for it. |
1627 | Put the name we will really use in TEM. */ | |
d5db4077 KR |
1628 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) |
1629 | && !(SCHARS (program) > 1 | |
1630 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
a4a37e65 KH |
1631 | { |
1632 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1633 | ||
1634 | tem = Qnil; | |
1635 | GCPRO4 (name, program, buffer, current_dir); | |
cc4db0c7 | 1636 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); |
a4a37e65 KH |
1637 | UNGCPRO; |
1638 | if (NILP (tem)) | |
1639 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1640 | tem = Fexpand_file_name (tem, Qnil); | |
a4a37e65 KH |
1641 | } |
1642 | else | |
1643 | { | |
1644 | if (!NILP (Ffile_directory_p (program))) | |
1645 | error ("Specified program for new process is a directory"); | |
ed30cf85 | 1646 | tem = program; |
a4a37e65 KH |
1647 | } |
1648 | ||
ed30cf85 RS |
1649 | /* If program file name starts with /: for quoting a magic name, |
1650 | discard that. */ | |
1651 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1652 | && SREF (tem, 1) == ':') | |
1653 | tem = Fsubstring (tem, make_number (2), Qnil); | |
1654 | ||
1655 | /* Encode the file name and put it in NEW_ARGV. | |
1656 | That's where the child will use it to execute the program. */ | |
1657 | tem = ENCODE_FILE (tem); | |
1658 | new_argv[0] = SDATA (tem); | |
1659 | ||
a4a37e65 KH |
1660 | /* Here we encode arguments by the coding system used for sending |
1661 | data to the process. We don't support using different coding | |
1662 | systems for encoding arguments and for encoding data sent to the | |
1663 | process. */ | |
1664 | ||
1665 | for (i = 3; i < nargs; i++) | |
1666 | { | |
1667 | tem = args[i]; | |
b7826503 | 1668 | CHECK_STRING (tem); |
a4a37e65 KH |
1669 | if (STRING_MULTIBYTE (tem)) |
1670 | tem = (code_convert_string_norecord | |
1671 | (tem, XPROCESS (proc)->encode_coding_system, 1)); | |
d5db4077 | 1672 | new_argv[i - 2] = SDATA (tem); |
a4a37e65 KH |
1673 | } |
1674 | new_argv[i - 2] = 0; | |
1675 | #endif /* not VMS */ | |
1676 | ||
0fa1789e | 1677 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
e7fbaa65 | 1678 | XPROCESS (proc)->decoding_carryover = make_number (0); |
0fa1789e | 1679 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); |
e7fbaa65 | 1680 | XPROCESS (proc)->encoding_carryover = make_number (0); |
0fa1789e | 1681 | |
52a1b894 | 1682 | XPROCESS (proc)->inherit_coding_system_flag |
aa91317a RS |
1683 | = (NILP (buffer) || !inherit_process_coding_system |
1684 | ? Qnil : Qt); | |
52a1b894 | 1685 | |
6b53bb85 | 1686 | create_process (proc, (char **) new_argv, current_dir); |
d0d6b7c5 | 1687 | |
b0310da4 | 1688 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1689 | } |
1690 | ||
b0310da4 | 1691 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1692 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1693 | an error and the process wasn't started successfully, so we should |
1694 | remove it from the process list. */ | |
1695 | static Lisp_Object | |
1696 | start_process_unwind (proc) | |
1697 | Lisp_Object proc; | |
1698 | { | |
bcd69aea | 1699 | if (!PROCESSP (proc)) |
b0310da4 JB |
1700 | abort (); |
1701 | ||
1702 | /* Was PROC started successfully? */ | |
188d6c4e | 1703 | if (XINT (XPROCESS (proc)->pid) <= 0) |
b0310da4 JB |
1704 | remove_process (proc); |
1705 | ||
1706 | return Qnil; | |
1707 | } | |
1708 | ||
30904ab7 GM |
1709 | void |
1710 | create_process_1 (timer) | |
1711 | struct atimer *timer; | |
d0d6b7c5 | 1712 | { |
30904ab7 | 1713 | /* Nothing to do. */ |
d0d6b7c5 JB |
1714 | } |
1715 | ||
30904ab7 | 1716 | |
d0d6b7c5 JB |
1717 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1718 | #ifdef USG | |
1719 | #ifdef SIGCHLD | |
1720 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1721 | ||
1722 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1723 | int sigchld_deferred; | |
1724 | ||
1725 | SIGTYPE | |
1726 | create_process_sigchld () | |
1727 | { | |
1728 | signal (SIGCHLD, create_process_sigchld); | |
1729 | ||
1730 | sigchld_deferred = 1; | |
1731 | } | |
1732 | #endif | |
1733 | #endif | |
1734 | #endif | |
1735 | ||
1736 | #ifndef VMS /* VMS version of this function is in vmsproc.c. */ | |
6b53bb85 | 1737 | void |
1e30af70 | 1738 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1739 | Lisp_Object process; |
1740 | char **new_argv; | |
1e30af70 | 1741 | Lisp_Object current_dir; |
d0d6b7c5 | 1742 | { |
ecd1f654 | 1743 | int pid, inchannel, outchannel; |
d0d6b7c5 | 1744 | int sv[2]; |
0dc70c33 KH |
1745 | #ifdef POSIX_SIGNALS |
1746 | sigset_t procmask; | |
1747 | sigset_t blocked; | |
1748 | struct sigaction sigint_action; | |
1749 | struct sigaction sigquit_action; | |
1750 | #ifdef AIX | |
1751 | struct sigaction sighup_action; | |
1752 | #endif | |
1753 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1754 | #if 0 |
d0d6b7c5 JB |
1755 | #ifdef SIGCHLD |
1756 | SIGTYPE (*sigchld)(); | |
1757 | #endif | |
41d03b9a | 1758 | #endif /* 0 */ |
0dc70c33 | 1759 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1760 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1761 | volatile int forkin, forkout; | |
1762 | volatile int pty_flag = 0; | |
3ec68006 | 1763 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1764 | extern char **environ; |
3ec68006 | 1765 | #endif |
d0d6b7c5 | 1766 | |
d0d6b7c5 JB |
1767 | inchannel = outchannel = -1; |
1768 | ||
1769 | #ifdef HAVE_PTYS | |
fe45da4e | 1770 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1771 | outchannel = inchannel = allocate_pty (); |
1772 | ||
d0d6b7c5 JB |
1773 | if (inchannel >= 0) |
1774 | { | |
2af70a0c RS |
1775 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1776 | /* On most USG systems it does not work to open the pty's tty here, | |
1777 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1778 | #ifdef O_NOCTTY |
1779 | /* Don't let this terminal become our controlling terminal | |
1780 | (in case we don't have one). */ | |
68c45bf0 | 1781 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1782 | #else |
68c45bf0 | 1783 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1784 | #endif |
1785 | if (forkin < 0) | |
1786 | report_file_error ("Opening pty", Qnil); | |
1787 | #else | |
1788 | forkin = forkout = -1; | |
2af70a0c | 1789 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1790 | pty_flag = 1; |
1791 | } | |
1792 | else | |
1793 | #endif /* HAVE_PTYS */ | |
1794 | #ifdef SKTPAIR | |
1795 | { | |
1796 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv) < 0) | |
1797 | report_file_error ("Opening socketpair", Qnil); | |
1798 | outchannel = inchannel = sv[0]; | |
1799 | forkout = forkin = sv[1]; | |
1800 | } | |
1801 | #else /* not SKTPAIR */ | |
1802 | { | |
fc14013c KH |
1803 | int tem; |
1804 | tem = pipe (sv); | |
1805 | if (tem < 0) | |
1806 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1807 | inchannel = sv[0]; |
1808 | forkout = sv[1]; | |
fc14013c KH |
1809 | tem = pipe (sv); |
1810 | if (tem < 0) | |
1811 | { | |
68c45bf0 PE |
1812 | emacs_close (inchannel); |
1813 | emacs_close (forkout); | |
fc14013c KH |
1814 | report_file_error ("Creating pipe", Qnil); |
1815 | } | |
d0d6b7c5 JB |
1816 | outchannel = sv[1]; |
1817 | forkin = sv[0]; | |
1818 | } | |
1819 | #endif /* not SKTPAIR */ | |
1820 | ||
1821 | #if 0 | |
1822 | /* Replaced by close_process_descs */ | |
1823 | set_exclusive_use (inchannel); | |
1824 | set_exclusive_use (outchannel); | |
1825 | #endif | |
1826 | ||
1827 | /* Stride people say it's a mystery why this is needed | |
1828 | as well as the O_NDELAY, but that it fails without this. */ | |
1829 | #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) | |
1830 | { | |
1831 | int one = 1; | |
1832 | ioctl (inchannel, FIONBIO, &one); | |
1833 | } | |
1834 | #endif | |
1835 | ||
1836 | #ifdef O_NONBLOCK | |
1837 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1838 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1839 | #else |
1840 | #ifdef O_NDELAY | |
1841 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1842 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1843 | #endif |
1844 | #endif | |
1845 | ||
1846 | /* Record this as an active process, with its channels. | |
1847 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1848 | chan_process[inchannel] = process; | |
1d056e64 KH |
1849 | XSETINT (XPROCESS (process)->infd, inchannel); |
1850 | XSETINT (XPROCESS (process)->outfd, outchannel); | |
16782258 JD |
1851 | |
1852 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1853 | It was only used for getting the foreground tty process, so now | |
1854 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1855 | more portable (see USG_SUBTTY_WORKS above). */ | |
1856 | ||
d0d6b7c5 JB |
1857 | XPROCESS (process)->pty_flag = (pty_flag ? Qt : Qnil); |
1858 | XPROCESS (process)->status = Qrun; | |
03f04413 | 1859 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1860 | |
1861 | /* Delay interrupts until we have a chance to store | |
1862 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1863 | #ifdef POSIX_SIGNALS |
1864 | sigemptyset (&blocked); | |
1865 | #ifdef SIGCHLD | |
1866 | sigaddset (&blocked, SIGCHLD); | |
1867 | #endif | |
351e611f | 1868 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1869 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1870 | this sets the parent's signal handlers as well as the child's. | |
1871 | So delay all interrupts whose handlers the child might munge, | |
1872 | and record the current handlers so they can be restored later. */ | |
1873 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1874 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1875 | #ifdef AIX | |
1876 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1877 | #endif | |
351e611f | 1878 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
1879 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
1880 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
1881 | #ifdef SIGCHLD |
1882 | #ifdef BSD4_1 | |
1883 | sighold (SIGCHLD); | |
1884 | #else /* not BSD4_1 */ | |
6df54671 | 1885 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
1886 | sigsetmask (sigmask (SIGCHLD)); |
1887 | #else /* ordinary USG */ | |
1888 | #if 0 | |
1889 | sigchld_deferred = 0; | |
1890 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
1891 | #endif | |
1892 | #endif /* ordinary USG */ | |
1893 | #endif /* not BSD4_1 */ | |
1894 | #endif /* SIGCHLD */ | |
0dc70c33 | 1895 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 1896 | |
3081bf8d | 1897 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1898 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1899 | if (inchannel > max_process_desc) |
1900 | max_process_desc = inchannel; | |
1901 | ||
d0d6b7c5 JB |
1902 | /* Until we store the proper pid, enable sigchld_handler |
1903 | to recognize an unknown pid as standing for this process. | |
1904 | It is very important not to let this `marker' value stay | |
1905 | in the table after this function has returned; if it does | |
1906 | it might cause call-process to hang and subsequent asynchronous | |
1907 | processes to get their return values scrambled. */ | |
1908 | XSETINT (XPROCESS (process)->pid, -1); | |
1909 | ||
ececcbec | 1910 | BLOCK_INPUT; |
177c0ea7 | 1911 | |
d0d6b7c5 JB |
1912 | { |
1913 | /* child_setup must clobber environ on systems with true vfork. | |
1914 | Protect it from permanent change. */ | |
1915 | char **save_environ = environ; | |
1916 | ||
14dc6093 | 1917 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1918 | |
e98d950b | 1919 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1920 | pid = vfork (); |
1921 | if (pid == 0) | |
e98d950b | 1922 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1923 | { |
1924 | int xforkin = forkin; | |
1925 | int xforkout = forkout; | |
1926 | ||
1927 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1928 | but fails to handle all the cases. */ | |
1929 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1930 | sigsetmask (SIGEMPTYMASK); | |
1931 | #endif | |
1932 | ||
1933 | /* Make the pty be the controlling terminal of the process. */ | |
1934 | #ifdef HAVE_PTYS | |
1935 | /* First, disconnect its current controlling terminal. */ | |
1936 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1937 | /* We tried doing setsid only if pty_flag, but it caused |
1938 | process_set_signal to fail on SGI when using a pipe. */ | |
1939 | setsid (); | |
ce4c9c90 | 1940 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 1941 | if (pty_flag) |
39e9ebcd | 1942 | { |
39e9ebcd RS |
1943 | #ifdef TIOCSCTTY |
1944 | /* We ignore the return value | |
1945 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1946 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1947 | #endif |
39e9ebcd | 1948 | } |
d0d6b7c5 | 1949 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1950 | #ifdef USG |
000ab717 | 1951 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1952 | afterwards. Otherwise, we lose our controlling tty which |
1953 | is set when we open the pty. */ | |
1954 | setpgrp (); | |
1955 | #endif /* USG */ | |
1956 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
1957 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
1958 | if (pty_flag && xforkin >= 0) | |
1959 | { | |
1960 | struct termios t; | |
1961 | tcgetattr (xforkin, &t); | |
1962 | t.c_lflag = LDISC1; | |
1963 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1964 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1965 | } |
1966 | #else | |
aafadd9f | 1967 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1968 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1969 | { |
1970 | /* Use new line discipline. */ | |
1971 | int ldisc = NTTYDISC; | |
4458f555 | 1972 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1973 | } |
000ab717 | 1974 | #endif |
9bcf8ec6 | 1975 | #endif |
177c0ea7 | 1976 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1977 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1978 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1979 | if (pty_flag) | |
1980 | { | |
177c0ea7 | 1981 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1982 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1983 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 1984 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 1985 | emacs_close (j); |
5a570e37 | 1986 | #ifndef USG |
d0d6b7c5 JB |
1987 | /* In order to get a controlling terminal on some versions |
1988 | of BSD, it is necessary to put the process in pgrp 0 | |
1989 | before it opens the terminal. */ | |
99c1aeca | 1990 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1991 | setpgid (0, 0); |
1992 | #else | |
d0d6b7c5 | 1993 | setpgrp (0, 0); |
3ea1d291 | 1994 | #endif |
d0d6b7c5 JB |
1995 | #endif |
1996 | } | |
1997 | #endif /* TIOCNOTTY */ | |
1998 | ||
99153b9e | 1999 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 2000 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
2001 | conditional on TIOCSPGRP, |
2002 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
2003 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
2004 | that system does seem to need this code, even though | |
2005 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
2006 | /* Now close the pty (if we had it open) and reopen it. |
2007 | This makes the pty the controlling terminal of the subprocess. */ | |
2008 | if (pty_flag) | |
2009 | { | |
99e3d726 RS |
2010 | #ifdef SET_CHILD_PTY_PGRP |
2011 | int pgrp = getpid (); | |
2012 | #endif | |
2013 | ||
68c45bf0 PE |
2014 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2015 | would work? */ | |
d0d6b7c5 | 2016 | if (xforkin >= 0) |
68c45bf0 PE |
2017 | emacs_close (xforkin); |
2018 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2019 | |
4aa54ba8 RS |
2020 | if (xforkin < 0) |
2021 | { | |
68c45bf0 PE |
2022 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2023 | emacs_write (1, pty_name, strlen (pty_name)); | |
2024 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2025 | _exit (1); |
2026 | } | |
2027 | ||
99e3d726 RS |
2028 | #ifdef SET_CHILD_PTY_PGRP |
2029 | ioctl (xforkin, TIOCSPGRP, &pgrp); | |
2030 | ioctl (xforkout, TIOCSPGRP, &pgrp); | |
2031 | #endif | |
d0d6b7c5 | 2032 | } |
99153b9e | 2033 | #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */ |
e9bf058b | 2034 | |
d0d6b7c5 | 2035 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2036 | if (pty_flag) |
2037 | { | |
2038 | SETUP_SLAVE_PTY; | |
2039 | } | |
d0d6b7c5 JB |
2040 | #endif /* SETUP_SLAVE_PTY */ |
2041 | #ifdef AIX | |
2042 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2043 | Now reenable it in the child, so it will die when we want it to. */ | |
2044 | if (pty_flag) | |
2045 | signal (SIGHUP, SIG_DFL); | |
2046 | #endif | |
2047 | #endif /* HAVE_PTYS */ | |
2048 | ||
0dc70c33 KH |
2049 | signal (SIGINT, SIG_DFL); |
2050 | signal (SIGQUIT, SIG_DFL); | |
2051 | ||
2052 | /* Stop blocking signals in the child. */ | |
2053 | #ifdef POSIX_SIGNALS | |
2054 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2055 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2056 | #ifdef SIGCHLD |
2057 | #ifdef BSD4_1 | |
2058 | sigrelse (SIGCHLD); | |
2059 | #else /* not BSD4_1 */ | |
6df54671 | 2060 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2061 | sigsetmask (SIGEMPTYMASK); |
2062 | #else /* ordinary USG */ | |
63528b78 | 2063 | #if 0 |
d0d6b7c5 | 2064 | signal (SIGCHLD, sigchld); |
63528b78 | 2065 | #endif |
d0d6b7c5 JB |
2066 | #endif /* ordinary USG */ |
2067 | #endif /* not BSD4_1 */ | |
2068 | #endif /* SIGCHLD */ | |
0dc70c33 | 2069 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2070 | |
ab01d0a8 RS |
2071 | if (pty_flag) |
2072 | child_setup_tty (xforkout); | |
e98d950b RS |
2073 | #ifdef WINDOWSNT |
2074 | pid = child_setup (xforkin, xforkout, xforkout, | |
2075 | new_argv, 1, current_dir); | |
177c0ea7 | 2076 | #else /* not WINDOWSNT */ |
d0d6b7c5 | 2077 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2078 | new_argv, 1, current_dir); |
e98d950b | 2079 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2080 | } |
2081 | environ = save_environ; | |
2082 | } | |
2083 | ||
ececcbec RS |
2084 | UNBLOCK_INPUT; |
2085 | ||
4a127b3b | 2086 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2087 | if (pid < 0) |
6311cf58 RS |
2088 | { |
2089 | if (forkin >= 0) | |
68c45bf0 | 2090 | emacs_close (forkin); |
6311cf58 | 2091 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2092 | emacs_close (forkout); |
6311cf58 | 2093 | } |
4a127b3b KH |
2094 | else |
2095 | { | |
2096 | /* vfork succeeded. */ | |
2097 | XSETFASTINT (XPROCESS (process)->pid, pid); | |
d0d6b7c5 | 2098 | |
e98d950b | 2099 | #ifdef WINDOWSNT |
4a127b3b | 2100 | register_child (pid, inchannel); |
e98d950b RS |
2101 | #endif /* WINDOWSNT */ |
2102 | ||
4a127b3b KH |
2103 | /* If the subfork execv fails, and it exits, |
2104 | this close hangs. I don't know why. | |
2105 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2106 | { |
2107 | struct atimer *timer; | |
2108 | EMACS_TIME offset; | |
177c0ea7 | 2109 | |
30904ab7 GM |
2110 | stop_polling (); |
2111 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2112 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2113 | |
30904ab7 GM |
2114 | if (forkin >= 0) |
2115 | emacs_close (forkin); | |
2116 | ||
2117 | cancel_atimer (timer); | |
2118 | start_polling (); | |
2119 | } | |
177c0ea7 | 2120 | |
4a127b3b | 2121 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2122 | emacs_close (forkout); |
d0d6b7c5 | 2123 | |
875e6b94 | 2124 | #ifdef HAVE_PTYS |
4a127b3b KH |
2125 | if (pty_flag) |
2126 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2127 | else | |
875e6b94 | 2128 | #endif |
4a127b3b KH |
2129 | XPROCESS (process)->tty_name = Qnil; |
2130 | } | |
3b9a3dfa | 2131 | |
4a127b3b KH |
2132 | /* Restore the signal state whether vfork succeeded or not. |
2133 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2134 | #ifdef POSIX_SIGNALS |
351e611f | 2135 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2136 | /* Restore the parent's signal handlers. */ |
2137 | sigaction (SIGINT, &sigint_action, 0); | |
2138 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2139 | #ifdef AIX | |
2140 | sigaction (SIGHUP, &sighup_action, 0); | |
2141 | #endif | |
351e611f | 2142 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2143 | /* Stop blocking signals in the parent. */ |
2144 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2145 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2146 | #ifdef SIGCHLD |
2147 | #ifdef BSD4_1 | |
2148 | sigrelse (SIGCHLD); | |
2149 | #else /* not BSD4_1 */ | |
6df54671 | 2150 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2151 | sigsetmask (SIGEMPTYMASK); |
2152 | #else /* ordinary USG */ | |
2153 | #if 0 | |
2154 | signal (SIGCHLD, sigchld); | |
2155 | /* Now really handle any of these signals | |
2156 | that came in during this function. */ | |
2157 | if (sigchld_deferred) | |
2158 | kill (getpid (), SIGCHLD); | |
2159 | #endif | |
2160 | #endif /* ordinary USG */ | |
2161 | #endif /* not BSD4_1 */ | |
2162 | #endif /* SIGCHLD */ | |
0dc70c33 | 2163 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2164 | |
2165 | /* Now generate the error if vfork failed. */ | |
2166 | if (pid < 0) | |
2167 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 JB |
2168 | } |
2169 | #endif /* not VMS */ | |
2170 | ||
e690ca94 | 2171 | \f |
d0d6b7c5 JB |
2172 | #ifdef HAVE_SOCKETS |
2173 | ||
e690ca94 KS |
2174 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2175 | The address family of sa is not included in the result. */ | |
2176 | ||
2177 | static Lisp_Object | |
2178 | conv_sockaddr_to_lisp (sa, len) | |
2179 | struct sockaddr *sa; | |
2180 | int len; | |
2181 | { | |
2182 | Lisp_Object address; | |
2183 | int i; | |
2184 | unsigned char *cp; | |
2185 | register struct Lisp_Vector *p; | |
2186 | ||
2187 | switch (sa->sa_family) | |
2188 | { | |
2189 | case AF_INET: | |
2190 | { | |
2191 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2192 | len = sizeof (sin->sin_addr) + 1; | |
2193 | address = Fmake_vector (make_number (len), Qnil); | |
2194 | p = XVECTOR (address); | |
2195 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
2196 | cp = (unsigned char *)&sin->sin_addr; | |
2197 | break; | |
2198 | } | |
2199 | #ifdef HAVE_LOCAL_SOCKETS | |
2200 | case AF_LOCAL: | |
2201 | { | |
fb23673a EZ |
2202 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2203 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2204 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2205 | break; |
fb23673a | 2206 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2207 | } |
2208 | #endif | |
2209 | default: | |
2210 | len -= sizeof (sa->sa_family); | |
2211 | address = Fcons (make_number (sa->sa_family), | |
2212 | Fmake_vector (make_number (len), Qnil)); | |
2213 | p = XVECTOR (XCDR (address)); | |
2214 | cp = (unsigned char *) sa + sizeof (sa->sa_family); | |
2215 | break; | |
2216 | } | |
2217 | ||
2218 | i = 0; | |
2219 | while (i < len) | |
2220 | p->contents[i++] = make_number (*cp++); | |
2221 | ||
2222 | return address; | |
2223 | } | |
2224 | ||
2225 | ||
2226 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2227 | ||
2228 | static int | |
2229 | get_lisp_to_sockaddr_size (address, familyp) | |
2230 | Lisp_Object address; | |
2231 | int *familyp; | |
2232 | { | |
2233 | register struct Lisp_Vector *p; | |
2234 | ||
2235 | if (VECTORP (address)) | |
2236 | { | |
2237 | p = XVECTOR (address); | |
2238 | if (p->size == 5) | |
2239 | { | |
2240 | *familyp = AF_INET; | |
2241 | return sizeof (struct sockaddr_in); | |
2242 | } | |
2243 | } | |
2244 | #ifdef HAVE_LOCAL_SOCKETS | |
2245 | else if (STRINGP (address)) | |
2246 | { | |
2247 | *familyp = AF_LOCAL; | |
2248 | return sizeof (struct sockaddr_un); | |
2249 | } | |
2250 | #endif | |
2251 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2252 | { | |
2253 | struct sockaddr *sa; | |
2254 | *familyp = XINT (XCAR (address)); | |
2255 | p = XVECTOR (XCDR (address)); | |
2256 | return p->size + sizeof (sa->sa_family); | |
2257 | } | |
2258 | return 0; | |
2259 | } | |
2260 | ||
2261 | /* Convert an address object (vector or string) to an internal sockaddr. | |
2262 | Format of address has already been validated by size_lisp_to_sockaddr. */ | |
2263 | ||
2264 | static void | |
2265 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2266 | int family; | |
2267 | Lisp_Object address; | |
2268 | struct sockaddr *sa; | |
2269 | int len; | |
2270 | { | |
2271 | register struct Lisp_Vector *p; | |
34967d0f | 2272 | register unsigned char *cp = NULL; |
e690ca94 KS |
2273 | register int i; |
2274 | ||
2275 | bzero (sa, len); | |
2276 | sa->sa_family = family; | |
2277 | ||
2278 | if (VECTORP (address)) | |
2279 | { | |
2280 | p = XVECTOR (address); | |
2281 | if (family == AF_INET) | |
2282 | { | |
2283 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2284 | len = sizeof (sin->sin_addr) + 1; | |
2285 | i = XINT (p->contents[--len]); | |
2286 | sin->sin_port = htons (i); | |
2287 | cp = (unsigned char *)&sin->sin_addr; | |
2288 | } | |
2289 | } | |
2290 | else if (STRINGP (address)) | |
2291 | { | |
2292 | #ifdef HAVE_LOCAL_SOCKETS | |
2293 | if (family == AF_LOCAL) | |
2294 | { | |
fb23673a | 2295 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2296 | cp = SDATA (address); |
fb23673a EZ |
2297 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2298 | sockun->sun_path[i] = *cp++; | |
e690ca94 KS |
2299 | } |
2300 | #endif | |
2301 | return; | |
2302 | } | |
2303 | else | |
2304 | { | |
2305 | p = XVECTOR (XCDR (address)); | |
2306 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2307 | } | |
2308 | ||
2309 | for (i = 0; i < len; i++) | |
2310 | if (INTEGERP (p->contents[i])) | |
2311 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2312 | } | |
2313 | ||
2314 | #ifdef DATAGRAM_SOCKETS | |
2315 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2316 | 1, 1, 0, | |
2317 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2318 | (process) | |
2319 | Lisp_Object process; | |
2320 | { | |
2321 | int channel; | |
2322 | ||
2323 | CHECK_PROCESS (process); | |
2324 | ||
2325 | if (!DATAGRAM_CONN_P (process)) | |
2326 | return Qnil; | |
2327 | ||
bed9664a | 2328 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2329 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2330 | datagram_address[channel].len); | |
2331 | } | |
2332 | ||
2333 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2334 | 2, 2, 0, | |
2335 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2336 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2337 | (process, address) | |
2338 | Lisp_Object process, address; | |
2339 | { | |
2340 | int channel; | |
2341 | int family, len; | |
2342 | ||
2343 | CHECK_PROCESS (process); | |
2344 | ||
2345 | if (!DATAGRAM_CONN_P (process)) | |
2346 | return Qnil; | |
2347 | ||
bed9664a | 2348 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2349 | |
2350 | len = get_lisp_to_sockaddr_size (address, &family); | |
2351 | if (datagram_address[channel].len != len) | |
2352 | return Qnil; | |
2353 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2354 | return address; | |
2355 | } | |
2356 | #endif | |
2357 | \f | |
2358 | ||
2359 | static struct socket_options { | |
2360 | /* The name of this option. Should be lowercase version of option | |
177c0ea7 | 2361 | name without SO_ prefix. */ |
e690ca94 | 2362 | char *name; |
e690ca94 KS |
2363 | /* Option level SOL_... */ |
2364 | int optlevel; | |
2365 | /* Option number SO_... */ | |
2366 | int optnum; | |
151ec9e2 | 2367 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2ccf3102 | 2368 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; |
e690ca94 KS |
2369 | } socket_options[] = |
2370 | { | |
2371 | #ifdef SO_BINDTODEVICE | |
151ec9e2 | 2372 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2373 | #endif |
2374 | #ifdef SO_BROADCAST | |
2ccf3102 | 2375 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2376 | #endif |
2377 | #ifdef SO_DONTROUTE | |
2ccf3102 | 2378 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2379 | #endif |
2380 | #ifdef SO_KEEPALIVE | |
2ccf3102 | 2381 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2382 | #endif |
2383 | #ifdef SO_LINGER | |
2ccf3102 | 2384 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2385 | #endif |
2386 | #ifdef SO_OOBINLINE | |
2ccf3102 | 2387 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2388 | #endif |
2389 | #ifdef SO_PRIORITY | |
2ccf3102 | 2390 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2391 | #endif |
2392 | #ifdef SO_REUSEADDR | |
2ccf3102 | 2393 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2394 | #endif |
2ccf3102 | 2395 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2396 | }; |
2397 | ||
2ccf3102 | 2398 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2399 | |
2ccf3102 KS |
2400 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2401 | Signals an error if setting a known option fails. | |
2402 | */ | |
e690ca94 KS |
2403 | |
2404 | static int | |
2ccf3102 | 2405 | set_socket_option (s, opt, val) |
e690ca94 | 2406 | int s; |
2ccf3102 | 2407 | Lisp_Object opt, val; |
e690ca94 | 2408 | { |
2ccf3102 KS |
2409 | char *name; |
2410 | struct socket_options *sopt; | |
2411 | int ret = 0; | |
e690ca94 | 2412 | |
2ccf3102 | 2413 | CHECK_SYMBOL (opt); |
e690ca94 | 2414 | |
2ccf3102 KS |
2415 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2416 | for (sopt = socket_options; sopt->name; sopt++) | |
2417 | if (strcmp (name, sopt->name) == 0) | |
2418 | break; | |
e690ca94 | 2419 | |
2ccf3102 KS |
2420 | switch (sopt->opttype) |
2421 | { | |
2422 | case SOPT_BOOL: | |
2423 | { | |
2424 | int optval; | |
2425 | optval = NILP (val) ? 0 : 1; | |
2426 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2427 | &optval, sizeof (optval)); | |
2428 | break; | |
2429 | } | |
e690ca94 | 2430 | |
2ccf3102 KS |
2431 | case SOPT_INT: |
2432 | { | |
2433 | int optval; | |
2434 | if (INTEGERP (val)) | |
2435 | optval = XINT (val); | |
2436 | else | |
2437 | error ("Bad option value for %s", name); | |
2438 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2439 | &optval, sizeof (optval)); | |
2440 | break; | |
2441 | } | |
e690ca94 | 2442 | |
151ec9e2 KS |
2443 | #ifdef SO_BINDTODEVICE |
2444 | case SOPT_IFNAME: | |
2ccf3102 | 2445 | { |
151ec9e2 KS |
2446 | char devname[IFNAMSIZ+1]; |
2447 | ||
2448 | /* This is broken, at least in the Linux 2.4 kernel. | |
2449 | To unbind, the arg must be a zero integer, not the empty string. | |
2450 | This should work on all systems. KFS. 2003-09-23. */ | |
2451 | bzero (devname, sizeof devname); | |
2452 | if (STRINGP (val)) | |
2453 | { | |
2454 | char *arg = (char *) SDATA (val); | |
2455 | int len = min (strlen (arg), IFNAMSIZ); | |
2456 | bcopy (arg, devname, len); | |
2457 | } | |
2458 | else if (!NILP (val)) | |
2ccf3102 KS |
2459 | error ("Bad option value for %s", name); |
2460 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
151ec9e2 KS |
2461 | devname, IFNAMSIZ); |
2462 | break; | |
2ccf3102 | 2463 | } |
151ec9e2 | 2464 | #endif |
e690ca94 | 2465 | |
177c0ea7 | 2466 | #ifdef SO_LINGER |
2ccf3102 KS |
2467 | case SOPT_LINGER: |
2468 | { | |
2469 | struct linger linger; | |
e690ca94 | 2470 | |
2ccf3102 KS |
2471 | linger.l_onoff = 1; |
2472 | linger.l_linger = 0; | |
2473 | if (INTEGERP (val)) | |
2474 | linger.l_linger = XINT (val); | |
2475 | else | |
2476 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2477 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2478 | &linger, sizeof (linger)); | |
2479 | break; | |
2480 | } | |
e690ca94 | 2481 | #endif |
2ccf3102 KS |
2482 | |
2483 | default: | |
2484 | return 0; | |
e690ca94 | 2485 | } |
2ccf3102 KS |
2486 | |
2487 | if (ret < 0) | |
2488 | report_file_error ("Cannot set network option", | |
2489 | Fcons (opt, Fcons (val, Qnil))); | |
2490 | return (1 << sopt->optbit); | |
e690ca94 KS |
2491 | } |
2492 | ||
2ccf3102 KS |
2493 | |
2494 | DEFUN ("set-network-process-option", | |
2495 | Fset_network_process_option, Sset_network_process_option, | |
2496 | 3, 4, 0, | |
2497 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2498 | See `make-network-process' for a list of options and values. | |
2499 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2500 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2501 | (process, option, value, no_error) | |
2502 | Lisp_Object process, option, value; | |
2503 | Lisp_Object no_error; | |
e690ca94 | 2504 | { |
e1283999 | 2505 | int s; |
151ec9e2 | 2506 | struct Lisp_Process *p; |
e690ca94 | 2507 | |
e690ca94 | 2508 | CHECK_PROCESS (process); |
151ec9e2 KS |
2509 | p = XPROCESS (process); |
2510 | if (!NETCONN1_P (p)) | |
2511 | error ("Process is not a network process"); | |
2ccf3102 | 2512 | |
151ec9e2 | 2513 | s = XINT (p->infd); |
2ccf3102 KS |
2514 | if (s < 0) |
2515 | error ("Process is not running"); | |
2516 | ||
2517 | if (set_socket_option (s, option, value)) | |
151ec9e2 KS |
2518 | { |
2519 | p->childp = Fplist_put (p->childp, option, value); | |
2520 | return Qt; | |
2521 | } | |
2ccf3102 KS |
2522 | |
2523 | if (NILP (no_error)) | |
2524 | error ("Unknown or unsupported option"); | |
2525 | ||
2526 | return Qnil; | |
e690ca94 | 2527 | } |
2ccf3102 | 2528 | |
e690ca94 | 2529 | \f |
e690ca94 KS |
2530 | /* A version of request_sigio suitable for a record_unwind_protect. */ |
2531 | ||
2532 | Lisp_Object | |
2533 | unwind_request_sigio (dummy) | |
2534 | Lisp_Object dummy; | |
2535 | { | |
2536 | if (interrupt_input) | |
2537 | request_sigio (); | |
2538 | return Qnil; | |
2539 | } | |
2540 | ||
2541 | /* Create a network stream/datagram client/server process. Treated | |
2542 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2543 | differences are in status display and process deletion. A network |
2544 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2545 | stop/continue it and deactivate/close it via delete-process */ |
2546 | ||
177c0ea7 JB |
2547 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2548 | 0, MANY, 0, | |
e690ca94 KS |
2549 | doc: /* Create and return a network server or client process. |
2550 | ||
fa9d4315 | 2551 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2552 | input and output work as for subprocesses and `delete-process' closes |
2553 | a network connection. However, a network process has no process id, | |
2554 | it cannot be signalled, and the status codes are different from normal | |
2555 | processes. | |
2556 | ||
2557 | Arguments are specified as keyword/argument pairs. The following | |
2558 | arguments are defined: | |
2559 | ||
2560 | :name NAME -- NAME is name for process. It is modified if necessary | |
2561 | to make it unique. | |
2562 | ||
2563 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2564 | with the process. Process output goes at end of that buffer, unless | |
2565 | you specify an output stream or filter function to handle the output. | |
2566 | BUFFER may be also nil, meaning that this process is not associated | |
2567 | with any buffer. | |
2568 | ||
2569 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2570 | address. The symbol `local' specifies the local host. If specified | |
2571 | for a server process, it must be a valid name or address for the local | |
2572 | host, and only clients connecting to that address will be accepted. | |
2573 | ||
2574 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2575 | integer specifying a port number to connect to. If SERVICE is t, | |
2576 | a random port number is selected for the server. | |
2577 | ||
9057ff80 KS |
2578 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
2579 | stream type connection, `datagram' creates a datagram type connection. | |
2580 | ||
e690ca94 KS |
2581 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
2582 | service specified by HOST and SERVICE. The default address family is | |
2583 | Inet (or IPv4) for the host and port number specified by HOST and | |
2584 | SERVICE. Other address families supported are: | |
2585 | local -- for a local (i.e. UNIX) address specified by SERVICE. | |
2586 | ||
2587 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2588 | This parameter is ignored when opening a client process. When specified | |
2589 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2590 | ||
2591 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2592 | connection. This parameter is ignored when opening a stream server | |
2593 | process. For a datagram server process, it specifies the initial | |
2594 | setting of the remote datagram address. When specified for a client | |
2595 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2596 | ||
2597 | The format of ADDRESS depends on the address family: | |
2598 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2599 | corresponding to numeric IP address A.B.C.D and port number P. | |
2600 | - A local address is represented as a string with the address in the | |
2601 | local address space. | |
2602 | - An "unsupported family" address is represented by a cons (F . AV) | |
2603 | where F is the family number and AV is a vector containing the socket | |
2604 | address data with one element per address data byte. Do not rely on | |
2605 | this format in portable code, as it may depend on implementation | |
2606 | defined constants, data sizes, and data structure alignment. | |
2607 | ||
2ccf3102 KS |
2608 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2609 | system used for both reading and writing for this process. If CODING | |
2610 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2611 | ENCODING is used for writing. | |
e690ca94 KS |
2612 | |
2613 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2614 | return without waiting for the connection to complete; instead, the | |
2615 | sentinel function will be called with second arg matching "open" (if | |
2616 | successful) or "failed" when the connect completes. Default is to use | |
2617 | a blocking connect (i.e. wait) for stream type connections. | |
2618 | ||
2619 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2620 | running when Emacs is exited. |
e690ca94 KS |
2621 | |
2622 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2623 | In the stopped state, a server process does not accept new | |
2624 | connections, and a client process does not handle incoming traffic. | |
2625 | The stopped state is cleared by `continue-process' and set by | |
2626 | `stop-process'. | |
2627 | ||
2628 | :filter FILTER -- Install FILTER as the process filter. | |
2629 | ||
7392e23c KS |
2630 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2631 | process filter are multibyte, otherwise they are unibyte. | |
2632 | If this keyword is not specified, the strings are multibyte iff | |
03f04413 KH |
2633 | `default-enable-multibyte-characters' is non-nil. |
2634 | ||
e690ca94 KS |
2635 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2636 | ||
2637 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2638 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2639 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2640 | is the server process, CLIENT is the new process for the connection, | |
2641 | and MESSAGE is a string. | |
2642 | ||
faa7db08 | 2643 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2644 | |
2ccf3102 | 2645 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2646 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
2ccf3102 KS |
2647 | If QLEN is an integer, it is used as the max. length of the server's |
2648 | pending connection queue (also known as the backlog); the default | |
2649 | queue length is 5. Default is to create a client process. | |
2650 | ||
2651 | The following network options can be specified for this connection: | |
2652 | ||
2ccf3102 KS |
2653 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. |
2654 | :dontroute BOOL -- Only send to directly connected hosts. | |
2655 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2656 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2657 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2658 | :priority INT -- Set protocol defined priority for sent packets. | |
2659 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2660 | (this is allowed by default for a server process). | |
151ec9e2 KS |
2661 | :bindtodevice NAME -- bind to interface NAME. Using this may require |
2662 | special privileges on some systems. | |
2ccf3102 KS |
2663 | |
2664 | Consult the relevant system programmer's manual pages for more | |
2665 | information on using these options. | |
2666 | ||
2667 | ||
2668 | A server process will listen for and accept connections from clients. | |
2669 | When a client connection is accepted, a new network process is created | |
2670 | for the connection with the following parameters: | |
e690ca94 | 2671 | |
e690ca94 KS |
2672 | - The client's process name is constructed by concatenating the server |
2673 | process' NAME and a client identification string. | |
2674 | - If the FILTER argument is non-nil, the client process will not get a | |
2675 | separate process buffer; otherwise, the client's process buffer is a newly | |
2676 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2677 | NAME concatenated with the client identification string. |
e690ca94 KS |
2678 | - The connection type and the process filter and sentinel parameters are |
2679 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2680 | - The client process' contact info is set according to the client's | |
2681 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2682 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2683 | |
2684 | Notice that the FILTER and SENTINEL args are never used directly by | |
2685 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2686 | the server process, but via the optional :log function, accepted (and |
2687 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2688 | |
365aee82 KS |
2689 | The original argument list, modified with the actual connection |
2690 | information, is available via the `process-contact' function. | |
365aee82 | 2691 | |
fa9d4315 | 2692 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
2693 | (nargs, args) |
2694 | int nargs; | |
2695 | Lisp_Object *args; | |
d0d6b7c5 JB |
2696 | { |
2697 | Lisp_Object proc; | |
e690ca94 KS |
2698 | Lisp_Object contact; |
2699 | struct Lisp_Process *p; | |
70dbdb36 | 2700 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2701 | struct addrinfo ai, *res, *lres; |
2702 | struct addrinfo hints; | |
2703 | char *portstring, portbuf[128]; | |
70dbdb36 | 2704 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2705 | struct _emacs_addrinfo |
2706 | { | |
2707 | int ai_family; | |
2708 | int ai_socktype; | |
2709 | int ai_protocol; | |
2710 | int ai_addrlen; | |
2711 | struct sockaddr *ai_addr; | |
2712 | struct _emacs_addrinfo *ai_next; | |
2713 | } ai, *res, *lres; | |
418b48fd | 2714 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2715 | struct sockaddr_in address_in; |
2716 | #ifdef HAVE_LOCAL_SOCKETS | |
2717 | struct sockaddr_un address_un; | |
2718 | #endif | |
2719 | int port; | |
dd2a17ab KS |
2720 | int ret = 0; |
2721 | int xerrno = 0; | |
418b48fd | 2722 | int s = -1, outch, inch; |
e690ca94 | 2723 | struct gcpro gcpro1; |
aed13378 | 2724 | int count = SPECPDL_INDEX (); |
5684cd6e | 2725 | int count1; |
e690ca94 KS |
2726 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2727 | Lisp_Object tem; | |
2728 | Lisp_Object name, buffer, host, service, address; | |
2729 | Lisp_Object filter, sentinel; | |
2730 | int is_non_blocking_client = 0; | |
2ccf3102 | 2731 | int is_server = 0, backlog = 5; |
9057ff80 | 2732 | int socktype; |
e690ca94 KS |
2733 | int family = -1; |
2734 | ||
2735 | if (nargs == 0) | |
2736 | return Qnil; | |
dd2a17ab | 2737 | |
e690ca94 KS |
2738 | /* Save arguments for process-contact and clone-process. */ |
2739 | contact = Flist (nargs, args); | |
2740 | GCPRO1 (contact); | |
2741 | ||
bff3ed0a RS |
2742 | #ifdef WINDOWSNT |
2743 | /* Ensure socket support is loaded if available. */ | |
2744 | init_winsock (TRUE); | |
2745 | #endif | |
2746 | ||
9057ff80 KS |
2747 | /* :type TYPE (nil: stream, datagram */ |
2748 | tem = Fplist_get (contact, QCtype); | |
2749 | if (NILP (tem)) | |
2750 | socktype = SOCK_STREAM; | |
2751 | #ifdef DATAGRAM_SOCKETS | |
2752 | else if (EQ (tem, Qdatagram)) | |
2753 | socktype = SOCK_DGRAM; | |
e690ca94 | 2754 | #endif |
9057ff80 KS |
2755 | else |
2756 | error ("Unsupported connection type"); | |
e690ca94 KS |
2757 | |
2758 | /* :server BOOL */ | |
2759 | tem = Fplist_get (contact, QCserver); | |
2760 | if (!NILP (tem)) | |
2761 | { | |
75728599 JR |
2762 | /* Don't support network sockets when non-blocking mode is |
2763 | not available, since a blocked Emacs is not useful. */ | |
2764 | #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY)) | |
e690ca94 KS |
2765 | error ("Network servers not supported"); |
2766 | #else | |
2767 | is_server = 1; | |
2ccf3102 KS |
2768 | if (INTEGERP (tem)) |
2769 | backlog = XINT (tem); | |
e690ca94 KS |
2770 | #endif |
2771 | } | |
2772 | ||
2773 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2774 | QCaddress = is_server ? QClocal : QCremote; | |
2775 | ||
2776 | /* :wait BOOL */ | |
2777 | if (!is_server && socktype == SOCK_STREAM | |
2778 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) | |
2779 | { | |
2780 | #ifndef NON_BLOCKING_CONNECT | |
2781 | error ("Non-blocking connect not supported"); | |
2782 | #else | |
2783 | is_non_blocking_client = 1; | |
2784 | #endif | |
2785 | } | |
2786 | ||
2787 | name = Fplist_get (contact, QCname); | |
2788 | buffer = Fplist_get (contact, QCbuffer); | |
2789 | filter = Fplist_get (contact, QCfilter); | |
2790 | sentinel = Fplist_get (contact, QCsentinel); | |
2791 | ||
b7826503 | 2792 | CHECK_STRING (name); |
e690ca94 KS |
2793 | |
2794 | #ifdef TERM | |
2795 | /* Let's handle TERM before things get complicated ... */ | |
2796 | host = Fplist_get (contact, QChost); | |
b7826503 | 2797 | CHECK_STRING (host); |
177c0ea7 | 2798 | |
e690ca94 KS |
2799 | service = Fplist_get (contact, QCservice); |
2800 | if (INTEGERP (service)) | |
2801 | port = htons ((unsigned short) XINT (service)); | |
2802 | else | |
2803 | { | |
2804 | struct servent *svc_info; | |
2805 | CHECK_STRING (service); | |
d5db4077 | 2806 | svc_info = getservbyname (SDATA (service), "tcp"); |
e690ca94 | 2807 | if (svc_info == 0) |
d5db4077 | 2808 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2809 | port = svc_info->s_port; |
2810 | } | |
2811 | ||
2812 | s = connect_server (0); | |
2813 | if (s < 0) | |
2814 | report_file_error ("error creating socket", Fcons (name, Qnil)); | |
d5db4077 | 2815 | send_command (s, C_PORT, 0, "%s:%d", SDATA (host), ntohs (port)); |
e690ca94 KS |
2816 | send_command (s, C_DUMB, 1, 0); |
2817 | ||
2818 | #else /* not TERM */ | |
2819 | ||
2820 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ | |
2821 | ai.ai_socktype = socktype; | |
2822 | ai.ai_protocol = 0; | |
2823 | ai.ai_next = NULL; | |
2824 | res = &ai; | |
a319f7c1 | 2825 | |
e690ca94 KS |
2826 | /* :local ADDRESS or :remote ADDRESS */ |
2827 | address = Fplist_get (contact, QCaddress); | |
2828 | if (!NILP (address)) | |
a319f7c1 | 2829 | { |
e690ca94 KS |
2830 | host = service = Qnil; |
2831 | ||
2832 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2833 | error ("Malformed :address"); | |
2834 | ai.ai_family = family; | |
2835 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2836 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2837 | goto open_socket; | |
a319f7c1 | 2838 | } |
e690ca94 KS |
2839 | |
2840 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2841 | tem = Fplist_get (contact, QCfamily); | |
2842 | if (INTEGERP (tem)) | |
2843 | family = XINT (tem); | |
a319f7c1 KH |
2844 | else |
2845 | { | |
e690ca94 KS |
2846 | if (NILP (tem)) |
2847 | family = AF_INET; | |
2848 | #ifdef HAVE_LOCAL_SOCKETS | |
2849 | else if (EQ (tem, Qlocal)) | |
2850 | family = AF_LOCAL; | |
2851 | #endif | |
a319f7c1 | 2852 | } |
e690ca94 KS |
2853 | if (family < 0) |
2854 | error ("Unknown address family"); | |
2855 | ai.ai_family = family; | |
2856 | ||
2857 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2858 | service = Fplist_get (contact, QCservice); | |
2859 | ||
2860 | #ifdef HAVE_LOCAL_SOCKETS | |
2861 | if (family == AF_LOCAL) | |
d0d6b7c5 | 2862 | { |
e690ca94 KS |
2863 | /* Host is not used. */ |
2864 | host = Qnil; | |
b7826503 | 2865 | CHECK_STRING (service); |
e690ca94 KS |
2866 | bzero (&address_un, sizeof address_un); |
2867 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 2868 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
2869 | ai.ai_addr = (struct sockaddr *) &address_un; |
2870 | ai.ai_addrlen = sizeof address_un; | |
2871 | goto open_socket; | |
d0d6b7c5 | 2872 | } |
e690ca94 | 2873 | #endif |
a319f7c1 | 2874 | |
e690ca94 KS |
2875 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
2876 | host = Fplist_get (contact, QChost); | |
2877 | if (!NILP (host)) | |
2878 | { | |
2879 | if (EQ (host, Qlocal)) | |
2880 | host = build_string ("localhost"); | |
2881 | CHECK_STRING (host); | |
2882 | } | |
d0d6b7c5 | 2883 | |
798b64bb KH |
2884 | /* Slow down polling to every ten seconds. |
2885 | Some kernels have a bug which causes retrying connect to fail | |
2886 | after a connect. Polling can interfere with gethostbyname too. */ | |
2887 | #ifdef POLL_FOR_INPUT | |
e690ca94 KS |
2888 | if (socktype == SOCK_STREAM) |
2889 | { | |
2890 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
2891 | bind_polling_period (10); | |
2892 | } | |
798b64bb KH |
2893 | #endif |
2894 | ||
a319f7c1 | 2895 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2896 | /* If we have a host, use getaddrinfo to resolve both host and service. |
2897 | Otherwise, use getservbyname to lookup the service. */ | |
2898 | if (!NILP (host)) | |
2899 | { | |
2900 | ||
2901 | /* SERVICE can either be a string or int. | |
2902 | Convert to a C string for later use by getaddrinfo. */ | |
2903 | if (EQ (service, Qt)) | |
2904 | portstring = "0"; | |
2905 | else if (INTEGERP (service)) | |
2906 | { | |
2907 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
2908 | portstring = portbuf; | |
2909 | } | |
2910 | else | |
2911 | { | |
2912 | CHECK_STRING (service); | |
d5db4077 | 2913 | portstring = SDATA (service); |
e690ca94 KS |
2914 | } |
2915 | ||
2916 | immediate_quit = 1; | |
2917 | QUIT; | |
2918 | memset (&hints, 0, sizeof (hints)); | |
2919 | hints.ai_flags = 0; | |
2920 | hints.ai_family = NILP (Fplist_member (contact, QCfamily)) ? AF_UNSPEC : family; | |
2921 | hints.ai_socktype = socktype; | |
2922 | hints.ai_protocol = 0; | |
d5db4077 | 2923 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 2924 | if (ret) |
f6270f62 | 2925 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 2926 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 2927 | #else |
d5db4077 | 2928 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 2929 | #endif |
e690ca94 | 2930 | immediate_quit = 0; |
a319f7c1 | 2931 | |
e690ca94 KS |
2932 | goto open_socket; |
2933 | } | |
2934 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 2935 | |
e690ca94 KS |
2936 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
2937 | has been specified (e.g. for a local server process). */ | |
2938 | ||
2939 | if (EQ (service, Qt)) | |
2940 | port = 0; | |
2941 | else if (INTEGERP (service)) | |
2942 | port = htons ((unsigned short) XINT (service)); | |
2943 | else | |
616da37c | 2944 | { |
e690ca94 KS |
2945 | struct servent *svc_info; |
2946 | CHECK_STRING (service); | |
177c0ea7 | 2947 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
2948 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
2949 | if (svc_info == 0) | |
d5db4077 | 2950 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2951 | port = svc_info->s_port; |
2952 | } | |
2953 | ||
2954 | bzero (&address_in, sizeof address_in); | |
2955 | address_in.sin_family = family; | |
2956 | address_in.sin_addr.s_addr = INADDR_ANY; | |
2957 | address_in.sin_port = port; | |
2958 | ||
2959 | #ifndef HAVE_GETADDRINFO | |
2960 | if (!NILP (host)) | |
2961 | { | |
2962 | struct hostent *host_info_ptr; | |
2963 | ||
2964 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 2965 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
2966 | immediate_quit = 1; |
2967 | QUIT; | |
d5db4077 | 2968 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 2969 | immediate_quit = 0; |
177c0ea7 | 2970 | |
e690ca94 KS |
2971 | if (host_info_ptr) |
2972 | { | |
2973 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
2974 | host_info_ptr->h_length); | |
2975 | family = host_info_ptr->h_addrtype; | |
2976 | address_in.sin_family = family; | |
2977 | } | |
2978 | else | |
2979 | /* Attempt to interpret host as numeric inet address */ | |
2980 | { | |
2981 | IN_ADDR numeric_addr; | |
d5db4077 | 2982 | numeric_addr = inet_addr ((char *) SDATA (host)); |
e690ca94 | 2983 | if (NUMERIC_ADDR_ERROR) |
d5db4077 | 2984 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 2985 | |
e690ca94 KS |
2986 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
2987 | sizeof (address_in.sin_addr)); | |
2988 | } | |
d0d6b7c5 | 2989 | |
e690ca94 | 2990 | } |
dd2a17ab | 2991 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 2992 | |
e690ca94 KS |
2993 | ai.ai_family = family; |
2994 | ai.ai_addr = (struct sockaddr *) &address_in; | |
2995 | ai.ai_addrlen = sizeof address_in; | |
2996 | ||
2997 | open_socket: | |
2998 | ||
2999 | /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR) | |
3000 | when connect is interrupted. So let's not let it get interrupted. | |
3001 | Note we do not turn off polling, because polling is only used | |
3002 | when not interrupt_input, and thus not normally used on the systems | |
3003 | which have this bug. On systems which use polling, there's no way | |
3004 | to quit if polling is turned off. */ | |
3005 | if (interrupt_input | |
3006 | && !is_server && socktype == SOCK_STREAM) | |
3007 | { | |
3008 | /* Comment from KFS: The original open-network-stream code | |
3009 | didn't unwind protect this, but it seems like the proper | |
3010 | thing to do. In any case, I don't see how it could harm to | |
3011 | do this -- and it makes cleanup (using unbind_to) easier. */ | |
3012 | record_unwind_protect (unwind_request_sigio, Qnil); | |
3013 | unrequest_sigio (); | |
3014 | } | |
3015 | ||
dd2a17ab | 3016 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3017 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3018 | s = -1; |
457a9bee | 3019 | |
dd2a17ab KS |
3020 | for (lres = res; lres; lres = lres->ai_next) |
3021 | { | |
2ccf3102 KS |
3022 | int optn, optbits; |
3023 | ||
4e9dd03b KS |
3024 | retry_connect: |
3025 | ||
dd2a17ab KS |
3026 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3027 | if (s < 0) | |
3028 | { | |
3029 | xerrno = errno; | |
3030 | continue; | |
3031 | } | |
0f2ee0c1 | 3032 | |
e690ca94 KS |
3033 | #ifdef DATAGRAM_SOCKETS |
3034 | if (!is_server && socktype == SOCK_DGRAM) | |
3035 | break; | |
3036 | #endif /* DATAGRAM_SOCKETS */ | |
3037 | ||
dd2a17ab | 3038 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3039 | if (is_non_blocking_client) |
dd2a17ab KS |
3040 | { |
3041 | #ifdef O_NONBLOCK | |
3042 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3043 | #else | |
3044 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3045 | #endif | |
3046 | if (ret < 0) | |
3047 | { | |
3048 | xerrno = errno; | |
3049 | emacs_close (s); | |
3050 | s = -1; | |
3051 | continue; | |
3052 | } | |
3053 | } | |
3054 | #endif | |
177c0ea7 | 3055 | |
dd2a17ab | 3056 | /* Make us close S if quit. */ |
dd2a17ab KS |
3057 | record_unwind_protect (close_file_unwind, make_number (s)); |
3058 | ||
2ccf3102 KS |
3059 | /* Parse network options in the arg list. |
3060 | We simply ignore anything which isn't a known option (including other keywords). | |
3061 | An error is signalled if setting a known option fails. */ | |
3062 | for (optn = optbits = 0; optn < nargs-1; optn += 2) | |
3063 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3064 | ||
e690ca94 KS |
3065 | if (is_server) |
3066 | { | |
3067 | /* Configure as a server socket. */ | |
2ccf3102 KS |
3068 | |
3069 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3070 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3071 | #ifdef HAVE_LOCAL_SOCKETS |
3072 | if (family != AF_LOCAL) | |
3073 | #endif | |
2ccf3102 KS |
3074 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3075 | { | |
3076 | int optval = 1; | |
3077 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
7c402969 | 3078 | report_file_error ("Cannot set reuse option on server socket", Qnil); |
2ccf3102 | 3079 | } |
177c0ea7 | 3080 | |
e690ca94 KS |
3081 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3082 | report_file_error ("Cannot bind server socket", Qnil); | |
3083 | ||
3084 | #ifdef HAVE_GETSOCKNAME | |
3085 | if (EQ (service, Qt)) | |
3086 | { | |
3087 | struct sockaddr_in sa1; | |
3088 | int len1 = sizeof (sa1); | |
3089 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3090 | { | |
3091 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3092 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3093 | contact = Fplist_put (contact, QCservice, service); |
3094 | } | |
3095 | } | |
3096 | #endif | |
3097 | ||
2ccf3102 | 3098 | if (socktype == SOCK_STREAM && listen (s, backlog)) |
e690ca94 KS |
3099 | report_file_error ("Cannot listen on server socket", Qnil); |
3100 | ||
3101 | break; | |
3102 | } | |
3103 | ||
dd2a17ab KS |
3104 | immediate_quit = 1; |
3105 | QUIT; | |
3106 | ||
3107 | /* This turns off all alarm-based interrupts; the | |
3108 | bind_polling_period call above doesn't always turn all the | |
3109 | short-interval ones off, especially if interrupt_input is | |
3110 | set. | |
3111 | ||
3112 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3113 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3114 | |
3115 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3116 | ||
f40f9848 | 3117 | turn_on_atimers (0); |
dd2a17ab KS |
3118 | |
3119 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3120 | xerrno = errno; | |
3121 | ||
f40f9848 | 3122 | turn_on_atimers (1); |
dd2a17ab KS |
3123 | |
3124 | if (ret == 0 || xerrno == EISCONN) | |
3125 | { | |
dd2a17ab KS |
3126 | /* The unwind-protect will be discarded afterwards. |
3127 | Likewise for immediate_quit. */ | |
3128 | break; | |
3129 | } | |
3130 | ||
3131 | #ifdef NON_BLOCKING_CONNECT | |
3132 | #ifdef EINPROGRESS | |
e690ca94 | 3133 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3134 | break; |
3135 | #else | |
3136 | #ifdef EWOULDBLOCK | |
e690ca94 | 3137 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3138 | break; |
3139 | #endif | |
3140 | #endif | |
3141 | #endif | |
e333e864 | 3142 | |
0f2ee0c1 RS |
3143 | immediate_quit = 0; |
3144 | ||
dd2a17ab | 3145 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3146 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3147 | emacs_close (s); |
dd2a17ab | 3148 | s = -1; |
4e9dd03b KS |
3149 | |
3150 | if (xerrno == EINTR) | |
3151 | goto retry_connect; | |
dd2a17ab | 3152 | } |
457a9bee | 3153 | |
e690ca94 KS |
3154 | if (s >= 0) |
3155 | { | |
3156 | #ifdef DATAGRAM_SOCKETS | |
3157 | if (socktype == SOCK_DGRAM) | |
3158 | { | |
3159 | if (datagram_address[s].sa) | |
3160 | abort (); | |
3161 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3162 | datagram_address[s].len = lres->ai_addrlen; | |
3163 | if (is_server) | |
3164 | { | |
3165 | Lisp_Object remote; | |
3166 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3167 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3168 | { | |
3169 | int rfamily, rlen; | |
3170 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3171 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3172 | conv_lisp_to_sockaddr (rfamily, remote, | |
3173 | datagram_address[s].sa, rlen); | |
3174 | } | |
3175 | } | |
3176 | else | |
3177 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3178 | } | |
3179 | #endif | |
177c0ea7 | 3180 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3181 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3182 | #ifdef HAVE_GETSOCKNAME |
3183 | if (!is_server) | |
3184 | { | |
3185 | struct sockaddr_in sa1; | |
3186 | int len1 = sizeof (sa1); | |
3187 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3188 | contact = Fplist_put (contact, QClocal, | |
3189 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3190 | } | |
3191 | #endif | |
e690ca94 KS |
3192 | } |
3193 | ||
dd2a17ab | 3194 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3195 | if (res != &ai) |
3196 | freeaddrinfo (res); | |
dd2a17ab KS |
3197 | #endif |
3198 | ||
e690ca94 KS |
3199 | immediate_quit = 0; |
3200 | ||
3201 | /* Discard the unwind protect for closing S, if any. */ | |
3202 | specpdl_ptr = specpdl + count1; | |
3203 | ||
3204 | /* Unwind bind_polling_period and request_sigio. */ | |
3205 | unbind_to (count, Qnil); | |
3206 | ||
dd2a17ab KS |
3207 | if (s < 0) |
3208 | { | |
dd2a17ab KS |
3209 | /* If non-blocking got this far - and failed - assume non-blocking is |
3210 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3211 | the normal blocking calls to open-network-stream handles this error |
3212 | better. */ | |
3213 | if (is_non_blocking_client) | |
dd2a17ab | 3214 | return Qnil; |
dd2a17ab | 3215 | |
d0d6b7c5 | 3216 | errno = xerrno; |
e690ca94 KS |
3217 | if (is_server) |
3218 | report_file_error ("make server process failed", contact); | |
3219 | else | |
3220 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3221 | } |
44ade2e9 | 3222 | |
e690ca94 | 3223 | #endif /* not TERM */ |
d0d6b7c5 JB |
3224 | |
3225 | inch = s; | |
59f23005 | 3226 | outch = s; |
d0d6b7c5 JB |
3227 | |
3228 | if (!NILP (buffer)) | |
3229 | buffer = Fget_buffer_create (buffer); | |
3230 | proc = make_process (name); | |
3231 | ||
3232 | chan_process[inch] = proc; | |
3233 | ||
3234 | #ifdef O_NONBLOCK | |
3235 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3236 | #else | |
3237 | #ifdef O_NDELAY | |
3238 | fcntl (inch, F_SETFL, O_NDELAY); | |
3239 | #endif | |
3240 | #endif | |
3241 | ||
e690ca94 KS |
3242 | p = XPROCESS (proc); |
3243 | ||
3244 | p->childp = contact; | |
faa7db08 | 3245 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
177c0ea7 | 3246 | |
e690ca94 KS |
3247 | p->buffer = buffer; |
3248 | p->sentinel = sentinel; | |
3249 | p->filter = filter; | |
03f04413 KH |
3250 | p->filter_multibyte = buffer_defaults.enable_multibyte_characters; |
3251 | /* Override the above only if :filter-multibyte is specified. */ | |
3252 | if (! NILP (Fplist_member (contact, QCfilter_multibyte))) | |
3253 | p->filter_multibyte = Fplist_get (contact, QCfilter_multibyte); | |
e690ca94 KS |
3254 | p->log = Fplist_get (contact, QClog); |
3255 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
3256 | p->kill_without_query = Qt; | |
3257 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) | |
3258 | p->command = Qt; | |
3259 | p->pid = Qnil; | |
3260 | XSETINT (p->infd, inch); | |
3261 | XSETINT (p->outfd, outch); | |
3262 | if (is_server && socktype == SOCK_STREAM) | |
3263 | p->status = Qlisten; | |
dd2a17ab KS |
3264 | |
3265 | #ifdef NON_BLOCKING_CONNECT | |
e690ca94 | 3266 | if (is_non_blocking_client) |
dd2a17ab KS |
3267 | { |
3268 | /* We may get here if connect did succeed immediately. However, | |
3269 | in that case, we still need to signal this like a non-blocking | |
3270 | connection. */ | |
e690ca94 | 3271 | p->status = Qconnect; |
dd2a17ab KS |
3272 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3273 | { | |
3274 | FD_SET (inch, &connect_wait_mask); | |
3275 | num_pending_connects++; | |
3276 | } | |
3277 | } | |
3278 | else | |
3279 | #endif | |
e690ca94 KS |
3280 | /* A server may have a client filter setting of Qt, but it must |
3281 | still listen for incoming connects unless it is stopped. */ | |
3282 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3283 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3284 | { |
3285 | FD_SET (inch, &input_wait_mask); | |
3286 | FD_SET (inch, &non_keyboard_wait_mask); | |
3287 | } | |
3288 | ||
7d0e672e RS |
3289 | if (inch > max_process_desc) |
3290 | max_process_desc = inch; | |
d0d6b7c5 | 3291 | |
e690ca94 KS |
3292 | tem = Fplist_member (contact, QCcoding); |
3293 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3294 | tem = Qnil; /* No error message (too late!). */ | |
3295 | ||
67918941 RS |
3296 | { |
3297 | /* Setup coding systems for communicating with the network stream. */ | |
3298 | struct gcpro gcpro1; | |
3299 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3300 | Lisp_Object coding_systems = Qt; | |
3301 | Lisp_Object args[5], val; | |
3302 | ||
e690ca94 | 3303 | if (!NILP (tem)) |
2ccf3102 KS |
3304 | { |
3305 | val = XCAR (XCDR (tem)); | |
3306 | if (CONSP (val)) | |
3307 | val = XCAR (val); | |
3308 | } | |
e690ca94 | 3309 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3310 | val = Vcoding_system_for_read; |
41d03b9a GM |
3311 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3312 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3313 | /* We dare not decode end-of-line format by setting VAL to |
3314 | Qraw_text, because the existing Emacs Lisp libraries | |
3315 | assume that they receive bare code including a sequene of | |
3316 | CR LF. */ | |
3317 | val = Qnil; | |
3318 | else | |
3319 | { | |
991234f0 KS |
3320 | if (NILP (host) || NILP (service)) |
3321 | coding_systems = Qnil; | |
3322 | else | |
3323 | { | |
3324 | args[0] = Qopen_network_stream, args[1] = name, | |
3325 | args[2] = buffer, args[3] = host, args[4] = service; | |
3326 | GCPRO1 (proc); | |
3327 | coding_systems = Ffind_operation_coding_system (5, args); | |
3328 | UNGCPRO; | |
3329 | } | |
67918941 | 3330 | if (CONSP (coding_systems)) |
70949dac | 3331 | val = XCAR (coding_systems); |
67918941 | 3332 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3333 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3334 | else |
3335 | val = Qnil; | |
3336 | } | |
e690ca94 | 3337 | p->decode_coding_system = val; |
0fa1789e | 3338 | |
e690ca94 | 3339 | if (!NILP (tem)) |
2ccf3102 KS |
3340 | { |
3341 | val = XCAR (XCDR (tem)); | |
3342 | if (CONSP (val)) | |
3343 | val = XCDR (val); | |
3344 | } | |
e690ca94 | 3345 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3346 | val = Vcoding_system_for_write; |
3347 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3348 | val = Qnil; | |
3349 | else | |
3350 | { | |
3351 | if (EQ (coding_systems, Qt)) | |
3352 | { | |
991234f0 KS |
3353 | if (NILP (host) || NILP (service)) |
3354 | coding_systems = Qnil; | |
3355 | else | |
3356 | { | |
3357 | args[0] = Qopen_network_stream, args[1] = name, | |
3358 | args[2] = buffer, args[3] = host, args[4] = service; | |
3359 | GCPRO1 (proc); | |
3360 | coding_systems = Ffind_operation_coding_system (5, args); | |
3361 | UNGCPRO; | |
3362 | } | |
67918941 RS |
3363 | } |
3364 | if (CONSP (coding_systems)) | |
70949dac | 3365 | val = XCDR (coding_systems); |
67918941 | 3366 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3367 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3368 | else |
3369 | val = Qnil; | |
3370 | } | |
e690ca94 | 3371 | p->encode_coding_system = val; |
67918941 | 3372 | } |
03f04413 | 3373 | setup_process_coding_systems (proc); |
0fa1789e | 3374 | |
e690ca94 KS |
3375 | p->decoding_buf = make_uninit_string (0); |
3376 | p->decoding_carryover = make_number (0); | |
3377 | p->encoding_buf = make_uninit_string (0); | |
3378 | p->encoding_carryover = make_number (0); | |
0fa1789e | 3379 | |
e690ca94 KS |
3380 | p->inherit_coding_system_flag |
3381 | = (!NILP (tem) || NILP (buffer) || !inherit_process_coding_system | |
aa91317a | 3382 | ? Qnil : Qt); |
52a1b894 | 3383 | |
d0d6b7c5 JB |
3384 | UNGCPRO; |
3385 | return proc; | |
3386 | } | |
3387 | #endif /* HAVE_SOCKETS */ | |
3388 | ||
161933c7 | 3389 | \f |
b8c7fd71 | 3390 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
161933c7 KS |
3391 | |
3392 | #ifdef SIOCGIFCONF | |
3393 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3394 | doc: /* Return an alist of all network interfaces and their network address. | |
3395 | Each element is a cons, the car of which is a string containing the | |
3396 | interface name, and the cdr is the network address in internal | |
e1283999 | 3397 | format; see the description of ADDRESS in `make-network-process'. */) |
161933c7 KS |
3398 | () |
3399 | { | |
3400 | struct ifconf ifconf; | |
3401 | struct ifreq *ifreqs = NULL; | |
3402 | int ifaces = 0; | |
3403 | int buf_size, s; | |
3404 | Lisp_Object res; | |
3405 | ||
3406 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3407 | if (s < 0) | |
3408 | return Qnil; | |
3409 | ||
3410 | again: | |
3411 | ifaces += 25; | |
3412 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3413 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3414 | if (!ifreqs) | |
3415 | { | |
3416 | close (s); | |
3417 | return Qnil; | |
3418 | } | |
3419 | ||
3420 | ifconf.ifc_len = buf_size; | |
3421 | ifconf.ifc_req = ifreqs; | |
3422 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3423 | { | |
3424 | close (s); | |
3425 | return Qnil; | |
3426 | } | |
3427 | ||
3428 | if (ifconf.ifc_len == buf_size) | |
3429 | goto again; | |
3430 | ||
3431 | close (s); | |
3432 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3433 | ||
3434 | res = Qnil; | |
3435 | while (--ifaces >= 0) | |
3436 | { | |
3437 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3438 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3439 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3440 | continue; | |
3441 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3442 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3443 | res = Fcons (Fcons (build_string (namebuf), | |
3444 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3445 | sizeof (struct sockaddr))), | |
3446 | res); | |
3447 | } | |
3448 | ||
3449 | return res; | |
3450 | } | |
b8c7fd71 | 3451 | #endif /* SIOCGIFCONF */ |
161933c7 KS |
3452 | |
3453 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3454 | ||
3455 | struct ifflag_def { | |
3456 | int flag_bit; | |
3457 | char *flag_sym; | |
3458 | }; | |
3459 | ||
3460 | static struct ifflag_def ifflag_table[] = { | |
3461 | #ifdef IFF_UP | |
3462 | { IFF_UP, "up" }, | |
3463 | #endif | |
3464 | #ifdef IFF_BROADCAST | |
3465 | { IFF_BROADCAST, "broadcast" }, | |
3466 | #endif | |
3467 | #ifdef IFF_DEBUG | |
3468 | { IFF_DEBUG, "debug" }, | |
3469 | #endif | |
3470 | #ifdef IFF_LOOPBACK | |
3471 | { IFF_LOOPBACK, "loopback" }, | |
3472 | #endif | |
3473 | #ifdef IFF_POINTOPOINT | |
3474 | { IFF_POINTOPOINT, "pointopoint" }, | |
3475 | #endif | |
3476 | #ifdef IFF_RUNNING | |
3477 | { IFF_RUNNING, "running" }, | |
3478 | #endif | |
3479 | #ifdef IFF_NOARP | |
3480 | { IFF_NOARP, "noarp" }, | |
3481 | #endif | |
3482 | #ifdef IFF_PROMISC | |
3483 | { IFF_PROMISC, "promisc" }, | |
3484 | #endif | |
3485 | #ifdef IFF_NOTRAILERS | |
3486 | { IFF_NOTRAILERS, "notrailers" }, | |
3487 | #endif | |
3488 | #ifdef IFF_ALLMULTI | |
3489 | { IFF_ALLMULTI, "allmulti" }, | |
3490 | #endif | |
3491 | #ifdef IFF_MASTER | |
3492 | { IFF_MASTER, "master" }, | |
3493 | #endif | |
3494 | #ifdef IFF_SLAVE | |
3495 | { IFF_SLAVE, "slave" }, | |
3496 | #endif | |
3497 | #ifdef IFF_MULTICAST | |
3498 | { IFF_MULTICAST, "multicast" }, | |
3499 | #endif | |
3500 | #ifdef IFF_PORTSEL | |
3501 | { IFF_PORTSEL, "portsel" }, | |
3502 | #endif | |
3503 | #ifdef IFF_AUTOMEDIA | |
3504 | { IFF_AUTOMEDIA, "automedia" }, | |
3505 | #endif | |
3506 | #ifdef IFF_DYNAMIC | |
3507 | { IFF_DYNAMIC, "dynamic" }, | |
3508 | #endif | |
3509 | { 0, 0 } | |
3510 | }; | |
3511 | ||
2ccf3102 | 3512 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, |
161933c7 KS |
3513 | doc: /* Return information about network interface named IFNAME. |
3514 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3515 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3516 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3517 | FLAGS is the current flags of the interface. */) | |
3518 | (ifname) | |
3519 | Lisp_Object ifname; | |
3520 | { | |
3521 | struct ifreq rq; | |
3522 | Lisp_Object res = Qnil; | |
3523 | Lisp_Object elt; | |
3524 | int s; | |
3525 | int any = 0; | |
3526 | ||
3527 | CHECK_STRING (ifname); | |
3528 | ||
3529 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
3530 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
3531 | ||
3532 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3533 | if (s < 0) | |
3534 | return Qnil; | |
3535 | ||
3536 | elt = Qnil; | |
559c53b3 | 3537 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) |
161933c7 KS |
3538 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3539 | { | |
3540 | int flags = rq.ifr_flags; | |
3541 | struct ifflag_def *fp; | |
3542 | int fnum; | |
3543 | ||
3544 | any++; | |
3545 | for (fp = ifflag_table; flags != 0 && fp; fp++) | |
3546 | { | |
3547 | if (flags & fp->flag_bit) | |
3548 | { | |
3549 | elt = Fcons (intern (fp->flag_sym), elt); | |
3550 | flags -= fp->flag_bit; | |
3551 | } | |
3552 | } | |
3553 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3554 | { | |
3555 | if (flags & (1 << fnum)) | |
3556 | { | |
3557 | elt = Fcons (make_number (fnum), elt); | |
3558 | } | |
3559 | } | |
3560 | } | |
3561 | #endif | |
3562 | res = Fcons (elt, res); | |
3563 | ||
3564 | elt = Qnil; | |
559c53b3 | 3565 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) |
161933c7 KS |
3566 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3567 | { | |
b8c7fd71 | 3568 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); |
161933c7 KS |
3569 | register struct Lisp_Vector *p = XVECTOR (hwaddr); |
3570 | int n; | |
3571 | ||
3572 | any++; | |
3573 | for (n = 0; n < 6; n++) | |
3574 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
e1283999 | 3575 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); |
161933c7 KS |
3576 | } |
3577 | #endif | |
3578 | res = Fcons (elt, res); | |
3579 | ||
3580 | elt = Qnil; | |
b8c7fd71 | 3581 | #if defined(SIOCGIFNETMASK) && defined(ifr_netmask) |
161933c7 KS |
3582 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3583 | { | |
3584 | any++; | |
3585 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); | |
3586 | } | |
3587 | #endif | |
3588 | res = Fcons (elt, res); | |
3589 | ||
3590 | elt = Qnil; | |
559c53b3 | 3591 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
161933c7 KS |
3592 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3593 | { | |
3594 | any++; | |
3595 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3596 | } | |
3597 | #endif | |
3598 | res = Fcons (elt, res); | |
3599 | ||
3600 | elt = Qnil; | |
559c53b3 | 3601 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) |
161933c7 KS |
3602 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3603 | { | |
3604 | any++; | |
3605 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3606 | } | |
3607 | #endif | |
3608 | res = Fcons (elt, res); | |
3609 | ||
3610 | close (s); | |
3611 | ||
3612 | return any ? res : Qnil; | |
3613 | } | |
3614 | #endif | |
3615 | #endif /* HAVE_SOCKETS */ | |
3616 | ||
04391069 RS |
3617 | /* Turn off input and output for process PROC. */ |
3618 | ||
6b53bb85 | 3619 | void |
d0d6b7c5 JB |
3620 | deactivate_process (proc) |
3621 | Lisp_Object proc; | |
3622 | { | |
3623 | register int inchannel, outchannel; | |
3624 | register struct Lisp_Process *p = XPROCESS (proc); | |
3625 | ||
a9f2c884 RS |
3626 | inchannel = XINT (p->infd); |
3627 | outchannel = XINT (p->outfd); | |
d0d6b7c5 | 3628 | |
2d942bfa KS |
3629 | #ifdef ADAPTIVE_READ_BUFFERING |
3630 | if (XINT (p->read_output_delay) > 0) | |
3631 | { | |
3632 | if (--process_output_delay_count < 0) | |
3633 | process_output_delay_count = 0; | |
3634 | XSETINT (p->read_output_delay, 0); | |
3635 | p->read_output_skip = Qnil; | |
3636 | } | |
3637 | #endif | |
f3d9532b | 3638 | |
a9f2c884 | 3639 | if (inchannel >= 0) |
d0d6b7c5 JB |
3640 | { |
3641 | /* Beware SIGCHLD hereabouts. */ | |
3642 | flush_pending_output (inchannel); | |
3643 | #ifdef VMS | |
3644 | { | |
3645 | VMS_PROC_STUFF *get_vms_process_pointer (), *vs; | |
3646 | sys$dassgn (outchannel); | |
c6c6865d | 3647 | vs = get_vms_process_pointer (p->pid); |
d0d6b7c5 JB |
3648 | if (vs) |
3649 | give_back_vms_process_stuff (vs); | |
3650 | } | |
3651 | #else | |
68c45bf0 | 3652 | emacs_close (inchannel); |
a9f2c884 | 3653 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3654 | emacs_close (outchannel); |
d0d6b7c5 JB |
3655 | #endif |
3656 | ||
1d056e64 KH |
3657 | XSETINT (p->infd, -1); |
3658 | XSETINT (p->outfd, -1); | |
e690ca94 KS |
3659 | #ifdef DATAGRAM_SOCKETS |
3660 | if (DATAGRAM_CHAN_P (inchannel)) | |
3661 | { | |
3662 | xfree (datagram_address[inchannel].sa); | |
3663 | datagram_address[inchannel].sa = 0; | |
3664 | datagram_address[inchannel].len = 0; | |
3665 | } | |
3666 | #endif | |
d0d6b7c5 JB |
3667 | chan_process[inchannel] = Qnil; |
3668 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3669 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3670 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3671 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3672 | { | |
3673 | FD_CLR (inchannel, &connect_wait_mask); | |
3674 | if (--num_pending_connects < 0) | |
3675 | abort (); | |
3676 | } | |
bad49fc7 | 3677 | #endif |
7d0e672e RS |
3678 | if (inchannel == max_process_desc) |
3679 | { | |
3680 | int i; | |
3681 | /* We just closed the highest-numbered process input descriptor, | |
3682 | so recompute the highest-numbered one now. */ | |
3683 | max_process_desc = 0; | |
3684 | for (i = 0; i < MAXDESC; i++) | |
3685 | if (!NILP (chan_process[i])) | |
3686 | max_process_desc = i; | |
3687 | } | |
d0d6b7c5 JB |
3688 | } |
3689 | } | |
3690 | ||
3691 | /* Close all descriptors currently in use for communication | |
3692 | with subprocess. This is used in a newly-forked subprocess | |
3693 | to get rid of irrelevant descriptors. */ | |
3694 | ||
6b53bb85 | 3695 | void |
d0d6b7c5 JB |
3696 | close_process_descs () |
3697 | { | |
e98d950b | 3698 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
3699 | int i; |
3700 | for (i = 0; i < MAXDESC; i++) | |
3701 | { | |
3702 | Lisp_Object process; | |
3703 | process = chan_process[i]; | |
3704 | if (!NILP (process)) | |
3705 | { | |
a9f2c884 RS |
3706 | int in = XINT (XPROCESS (process)->infd); |
3707 | int out = XINT (XPROCESS (process)->outfd); | |
3708 | if (in >= 0) | |
68c45bf0 | 3709 | emacs_close (in); |
a9f2c884 | 3710 | if (out >= 0 && in != out) |
68c45bf0 | 3711 | emacs_close (out); |
d0d6b7c5 JB |
3712 | } |
3713 | } | |
e98d950b | 3714 | #endif |
d0d6b7c5 JB |
3715 | } |
3716 | \f | |
3717 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3718 | 0, 4, 0, |
fdb82f93 PJ |
3719 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3720 | It is read into the process' buffers or given to their filter functions. | |
3721 | Non-nil arg PROCESS means do not return until some output has been received | |
3722 | from PROCESS. | |
3723 | Non-nil second arg TIMEOUT and third arg TIMEOUT-MSECS are number of | |
3724 | seconds and microseconds to wait; return after that much time whether | |
3725 | or not there is input. | |
107ed38d KS |
3726 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3727 | from PROCESS, suspending reading output from other processes. | |
3728 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
fdb82f93 | 3729 | Return non-nil iff we received any output before the timeout expired. */) |
107ed38d KS |
3730 | (process, timeout, timeout_msecs, just_this_one) |
3731 | register Lisp_Object process, timeout, timeout_msecs, just_this_one; | |
d0d6b7c5 JB |
3732 | { |
3733 | int seconds; | |
3734 | int useconds; | |
3735 | ||
0748d150 | 3736 | if (! NILP (process)) |
b7826503 | 3737 | CHECK_PROCESS (process); |
107ed38d KS |
3738 | else |
3739 | just_this_one = Qnil; | |
0748d150 | 3740 | |
d0d6b7c5 JB |
3741 | if (! NILP (timeout_msecs)) |
3742 | { | |
b7826503 | 3743 | CHECK_NUMBER (timeout_msecs); |
d0d6b7c5 | 3744 | useconds = XINT (timeout_msecs); |
bcd69aea | 3745 | if (!INTEGERP (timeout)) |
1d056e64 | 3746 | XSETINT (timeout, 0); |
d0d6b7c5 JB |
3747 | |
3748 | { | |
3749 | int carry = useconds / 1000000; | |
3750 | ||
3751 | XSETINT (timeout, XINT (timeout) + carry); | |
3752 | useconds -= carry * 1000000; | |
3753 | ||
3754 | /* I think this clause is necessary because C doesn't | |
3755 | guarantee a particular rounding direction for negative | |
3756 | integers. */ | |
3757 | if (useconds < 0) | |
3758 | { | |
3759 | XSETINT (timeout, XINT (timeout) - 1); | |
3760 | useconds += 1000000; | |
3761 | } | |
3762 | } | |
3763 | } | |
de946e5a RS |
3764 | else |
3765 | useconds = 0; | |
d0d6b7c5 JB |
3766 | |
3767 | if (! NILP (timeout)) | |
3768 | { | |
b7826503 | 3769 | CHECK_NUMBER (timeout); |
d0d6b7c5 | 3770 | seconds = XINT (timeout); |
ada9a4fd | 3771 | if (seconds < 0 || (seconds == 0 && useconds == 0)) |
d0d6b7c5 JB |
3772 | seconds = -1; |
3773 | } | |
3774 | else | |
26d7389d | 3775 | seconds = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
3776 | |
3777 | return | |
214d6069 KS |
3778 | (wait_reading_process_output (seconds, useconds, 0, 0, |
3779 | Qnil, | |
3780 | !NILP (process) ? XPROCESS (process) : NULL, | |
3781 | NILP (just_this_one) ? 0 : | |
3782 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3783 | ? Qt : Qnil); |
3784 | } | |
3785 | ||
e690ca94 KS |
3786 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3787 | ||
3788 | static int connect_counter = 0; | |
3789 | ||
3790 | static void | |
3791 | server_accept_connection (server, channel) | |
3792 | Lisp_Object server; | |
3793 | int channel; | |
3794 | { | |
3795 | Lisp_Object proc, caller, name, buffer; | |
3796 | Lisp_Object contact, host, service; | |
3797 | struct Lisp_Process *ps= XPROCESS (server); | |
3798 | struct Lisp_Process *p; | |
3799 | int s; | |
3800 | union u_sockaddr { | |
3801 | struct sockaddr sa; | |
3802 | struct sockaddr_in in; | |
3803 | #ifdef HAVE_LOCAL_SOCKETS | |
3804 | struct sockaddr_un un; | |
3805 | #endif | |
3806 | } saddr; | |
3807 | int len = sizeof saddr; | |
3808 | ||
3809 | s = accept (channel, &saddr.sa, &len); | |
3810 | ||
3811 | if (s < 0) | |
3812 | { | |
3813 | int code = errno; | |
3814 | ||
3815 | if (code == EAGAIN) | |
3816 | return; | |
3817 | #ifdef EWOULDBLOCK | |
3818 | if (code == EWOULDBLOCK) | |
3819 | return; | |
3820 | #endif | |
3821 | ||
3822 | if (!NILP (ps->log)) | |
3823 | call3 (ps->log, server, Qnil, | |
3824 | concat3 (build_string ("accept failed with code"), | |
3825 | Fnumber_to_string (make_number (code)), | |
3826 | build_string ("\n"))); | |
3827 | return; | |
3828 | } | |
3829 | ||
3830 | connect_counter++; | |
3831 | ||
3832 | /* Setup a new process to handle the connection. */ | |
3833 | ||
3834 | /* Generate a unique identification of the caller, and build contact | |
3835 | information for this process. */ | |
3836 | host = Qt; | |
3837 | service = Qnil; | |
3838 | switch (saddr.sa.sa_family) | |
3839 | { | |
3840 | case AF_INET: | |
3841 | { | |
3842 | Lisp_Object args[5]; | |
3843 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
3844 | args[0] = build_string ("%d.%d.%d.%d"); | |
3845 | args[1] = make_number (*ip++); | |
3846 | args[2] = make_number (*ip++); | |
3847 | args[3] = make_number (*ip++); | |
3848 | args[4] = make_number (*ip++); | |
3849 | host = Fformat (5, args); | |
3850 | service = make_number (ntohs (saddr.in.sin_port)); | |
3851 | ||
3852 | args[0] = build_string (" <%s:%d>"); | |
3853 | args[1] = host; | |
3854 | args[2] = service; | |
3855 | caller = Fformat (3, args); | |
3856 | } | |
3857 | break; | |
3858 | ||
3859 | #ifdef HAVE_LOCAL_SOCKETS | |
3860 | case AF_LOCAL: | |
3861 | #endif | |
3862 | default: | |
3863 | caller = Fnumber_to_string (make_number (connect_counter)); | |
3864 | caller = concat3 (build_string (" <*"), caller, build_string ("*>")); | |
3865 | break; | |
3866 | } | |
3867 | ||
3868 | /* Create a new buffer name for this process if it doesn't have a | |
3869 | filter. The new buffer name is based on the buffer name or | |
3870 | process name of the server process concatenated with the caller | |
3871 | identification. */ | |
3872 | ||
3873 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
3874 | buffer = Qnil; | |
3875 | else | |
3876 | { | |
3877 | buffer = ps->buffer; | |
3878 | if (!NILP (buffer)) | |
3879 | buffer = Fbuffer_name (buffer); | |
3880 | else | |
3881 | buffer = ps->name; | |
3882 | if (!NILP (buffer)) | |
3883 | { | |
3884 | buffer = concat2 (buffer, caller); | |
3885 | buffer = Fget_buffer_create (buffer); | |
3886 | } | |
3887 | } | |
3888 | ||
3889 | /* Generate a unique name for the new server process. Combine the | |
3890 | server process name with the caller identification. */ | |
3891 | ||
3892 | name = concat2 (ps->name, caller); | |
3893 | proc = make_process (name); | |
3894 | ||
3895 | chan_process[s] = proc; | |
3896 | ||
3897 | #ifdef O_NONBLOCK | |
3898 | fcntl (s, F_SETFL, O_NONBLOCK); | |
3899 | #else | |
3900 | #ifdef O_NDELAY | |
3901 | fcntl (s, F_SETFL, O_NDELAY); | |
3902 | #endif | |
3903 | #endif | |
3904 | ||
3905 | p = XPROCESS (proc); | |
3906 | ||
3907 | /* Build new contact information for this setup. */ | |
3908 | contact = Fcopy_sequence (ps->childp); | |
3909 | contact = Fplist_put (contact, QCserver, Qnil); | |
3910 | contact = Fplist_put (contact, QChost, host); | |
3911 | if (!NILP (service)) | |
3912 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 3913 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
3914 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
3915 | #ifdef HAVE_GETSOCKNAME | |
3916 | len = sizeof saddr; | |
2185db04 | 3917 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 3918 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
3919 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
3920 | #endif | |
3921 | ||
3922 | p->childp = contact; | |
faa7db08 | 3923 | p->plist = Fcopy_sequence (ps->plist); |
ac4a7584 | 3924 | |
e690ca94 KS |
3925 | p->buffer = buffer; |
3926 | p->sentinel = ps->sentinel; | |
3927 | p->filter = ps->filter; | |
3928 | p->command = Qnil; | |
3929 | p->pid = Qnil; | |
3930 | XSETINT (p->infd, s); | |
3931 | XSETINT (p->outfd, s); | |
3932 | p->status = Qrun; | |
3933 | ||
3934 | /* Client processes for accepted connections are not stopped initially. */ | |
3935 | if (!EQ (p->filter, Qt)) | |
3936 | { | |
3937 | FD_SET (s, &input_wait_mask); | |
3938 | FD_SET (s, &non_keyboard_wait_mask); | |
3939 | } | |
3940 | ||
3941 | if (s > max_process_desc) | |
3942 | max_process_desc = s; | |
3943 | ||
177c0ea7 | 3944 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
3945 | This seems to be the proper thing to do, as the coding system |
3946 | of the new process should reflect the settings at the time the | |
3947 | server socket was opened; not the current settings. */ | |
3948 | ||
3949 | p->decode_coding_system = ps->decode_coding_system; | |
3950 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 3951 | setup_process_coding_systems (proc); |
e690ca94 KS |
3952 | |
3953 | p->decoding_buf = make_uninit_string (0); | |
3954 | p->decoding_carryover = make_number (0); | |
3955 | p->encoding_buf = make_uninit_string (0); | |
3956 | p->encoding_carryover = make_number (0); | |
3957 | ||
3958 | p->inherit_coding_system_flag | |
3959 | = (NILP (buffer) ? Qnil : ps->inherit_coding_system_flag); | |
3960 | ||
3961 | if (!NILP (ps->log)) | |
3962 | call3 (ps->log, server, proc, | |
3963 | concat3 (build_string ("accept from "), | |
3964 | (STRINGP (host) ? host : build_string ("-")), | |
3965 | build_string ("\n"))); | |
3966 | ||
bed9664a | 3967 | if (!NILP (p->sentinel)) |
177c0ea7 | 3968 | exec_sentinel (proc, |
e690ca94 KS |
3969 | concat3 (build_string ("open from "), |
3970 | (STRINGP (host) ? host : build_string ("-")), | |
3971 | build_string ("\n"))); | |
3972 | } | |
3973 | ||
d0d6b7c5 JB |
3974 | /* This variable is different from waiting_for_input in keyboard.c. |
3975 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 3976 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
3977 | for user-input when that process-filter was called. |
3978 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
3979 | lisp code is being evalled. |
3980 | This is also used in record_asynch_buffer_change. | |
3981 | For that purpose, this must be 0 | |
214d6069 | 3982 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
3983 | static int waiting_for_user_input_p; |
3984 | ||
c573ae8e | 3985 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 3986 | static void |
214d6069 | 3987 | wait_reading_process_output_1 () |
c573ae8e RS |
3988 | { |
3989 | } | |
3990 | ||
d0d6b7c5 JB |
3991 | /* Read and dispose of subprocess output while waiting for timeout to |
3992 | elapse and/or keyboard input to be available. | |
3993 | ||
de6fd4b9 | 3994 | TIME_LIMIT is: |
d0d6b7c5 JB |
3995 | timeout in seconds, or |
3996 | zero for no limit, or | |
3997 | -1 means gobble data immediately available but don't wait for any. | |
3998 | ||
de6fd4b9 RS |
3999 | MICROSECS is: |
4000 | an additional duration to wait, measured in microseconds. | |
4001 | If this is nonzero and time_limit is 0, then the timeout | |
4002 | consists of MICROSECS only. | |
6e4f3667 | 4003 | |
de6fd4b9 | 4004 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4005 | 0 to ignore keyboard input, or |
4006 | 1 to return when input is available, or | |
84aa3ace | 4007 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4008 | the quit handler, or |
b89a415a KS |
4009 | |
4010 | DO_DISPLAY != 0 means redisplay should be done to show subprocess | |
107ed38d | 4011 | output that arrives. |
d0d6b7c5 | 4012 | |
b89a415a KS |
4013 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4014 | (and gobble terminal input into the buffer if any arrives). | |
4015 | ||
4016 | If WAIT_PROC is specified, wait until something arrives from that | |
4017 | process. The return value is true iff we read some input from | |
4018 | that process. | |
4019 | ||
4020 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4021 | (suspending output from other processes). A negative value | |
4022 | means don't run any timers either. | |
4023 | ||
4024 | If WAIT_PROC is specified, then the function returns true iff we | |
4025 | received input from that process before the timeout elapsed. | |
eb8c3be9 | 4026 | Otherwise, return true iff we received input from any process. */ |
d0d6b7c5 | 4027 | |
dfcf069d | 4028 | int |
214d6069 KS |
4029 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
4030 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
4031 | int time_limit, microsecs, read_kbd, do_display; |
4032 | Lisp_Object wait_for_cell; | |
4033 | struct Lisp_Process *wait_proc; | |
4034 | int just_wait_proc; | |
d0d6b7c5 | 4035 | { |
41d03b9a | 4036 | register int channel, nfds; |
855448dc | 4037 | SELECT_TYPE Available; |
bad49fc7 | 4038 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4039 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4040 | int check_connect; |
4041 | #endif | |
4042 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4043 | int xerrno; |
4044 | Lisp_Object proc; | |
41d03b9a | 4045 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4046 | int wait_channel = -1; |
d0d6b7c5 | 4047 | int got_some_input = 0; |
f3fbd155 KR |
4048 | /* Either nil or a cons cell, the car of which is of interest and |
4049 | may be changed outside of this routine. */ | |
855448dc | 4050 | int saved_waiting_for_user_input_p = waiting_for_user_input_p; |
d0d6b7c5 JB |
4051 | |
4052 | FD_ZERO (&Available); | |
bad49fc7 | 4053 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4054 | FD_ZERO (&Connecting); |
bad49fc7 | 4055 | #endif |
d0d6b7c5 | 4056 | |
b89a415a KS |
4057 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4058 | if (wait_proc != NULL) | |
4059 | wait_channel = XINT (wait_proc->infd); | |
d0d6b7c5 | 4060 | |
b89a415a | 4061 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4062 | |
4063 | /* Since we may need to wait several times, | |
4064 | compute the absolute time to return at. */ | |
4065 | if (time_limit || microsecs) | |
4066 | { | |
4067 | EMACS_GET_TIME (end_time); | |
4068 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4069 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4070 | } | |
19310311 | 4071 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4072 | /* AlainF 5-Jul-1996 |
4073 | HP-UX 10.10 seem to have problems with signals coming in | |
4074 | Causes "poll: interrupted system call" messages when Emacs is run | |
4075 | in an X window | |
75eb23f1 RS |
4076 | Turn off periodic alarms (in case they are in use), |
4077 | and then turn off any other atimers. */ | |
4078 | stop_polling (); | |
30904ab7 | 4079 | turn_on_atimers (0); |
19310311 | 4080 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
d0d6b7c5 | 4081 | |
d0d6b7c5 JB |
4082 | while (1) |
4083 | { | |
c0239a0b RS |
4084 | int timeout_reduced_for_timers = 0; |
4085 | ||
d0d6b7c5 JB |
4086 | /* If calling from keyboard input, do not quit |
4087 | since we want to return C-g as an input character. | |
4088 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4089 | if (read_kbd >= 0) |
d0d6b7c5 | 4090 | QUIT; |
43ff45a0 SM |
4091 | #ifdef SYNC_INPUT |
4092 | else if (interrupt_input_pending) | |
4093 | handle_async_input (); | |
4094 | #endif | |
d0d6b7c5 | 4095 | |
889255b4 | 4096 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4097 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4098 | break; |
4099 | ||
d0d6b7c5 JB |
4100 | /* Compute time from now till when time limit is up */ |
4101 | /* Exit if already run out */ | |
4102 | if (time_limit == -1) | |
4103 | { | |
4104 | /* -1 specified for timeout means | |
4105 | gobble output available now | |
4106 | but don't wait at all. */ | |
4107 | ||
4108 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4109 | } | |
4110 | else if (time_limit || microsecs) | |
4111 | { | |
4112 | EMACS_GET_TIME (timeout); | |
4113 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4114 | if (EMACS_TIME_NEG_P (timeout)) | |
4115 | break; | |
4116 | } | |
4117 | else | |
4118 | { | |
4119 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4120 | } | |
4121 | ||
f854a00b RS |
4122 | /* Normally we run timers here. |
4123 | But not if wait_for_cell; in those cases, | |
4124 | the wait is supposed to be short, | |
4125 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4126 | if (NILP (wait_for_cell) |
b89a415a | 4127 | && just_wait_proc >= 0) |
fb4c3627 | 4128 | { |
c0239a0b | 4129 | EMACS_TIME timer_delay; |
c573ae8e | 4130 | |
9baacf76 | 4131 | do |
c573ae8e | 4132 | { |
9baacf76 | 4133 | int old_timers_run = timers_run; |
c88164fe | 4134 | struct buffer *old_buffer = current_buffer; |
177c0ea7 | 4135 | |
9baacf76 | 4136 | timer_delay = timer_check (1); |
a2fab450 GM |
4137 | |
4138 | /* If a timer has run, this might have changed buffers | |
4139 | an alike. Make read_key_sequence aware of that. */ | |
4140 | if (timers_run != old_timers_run | |
c88164fe | 4141 | && old_buffer != current_buffer |
a2fab450 GM |
4142 | && waiting_for_user_input_p == -1) |
4143 | record_asynch_buffer_change (); | |
177c0ea7 | 4144 | |
9baacf76 GM |
4145 | if (timers_run != old_timers_run && do_display) |
4146 | /* We must retry, since a timer may have requeued itself | |
4147 | and that could alter the time_delay. */ | |
3007ebfb | 4148 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4149 | else |
4150 | break; | |
c573ae8e | 4151 | } |
9baacf76 | 4152 | while (!detect_input_pending ()); |
c573ae8e | 4153 | |
69645afc | 4154 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4155 | if (read_kbd != 0 |
69645afc RS |
4156 | && requeued_events_pending_p ()) |
4157 | break; | |
4158 | ||
c0239a0b | 4159 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4160 | { |
4161 | EMACS_TIME difference; | |
4162 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4163 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4164 | { |
4165 | timeout = timer_delay; | |
4166 | timeout_reduced_for_timers = 1; | |
4167 | } | |
fb4c3627 | 4168 | } |
4abca5e7 RS |
4169 | /* If time_limit is -1, we are not going to wait at all. */ |
4170 | else if (time_limit != -1) | |
c573ae8e RS |
4171 | { |
4172 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4173 | wait_reading_process_output_1 (); |
c573ae8e | 4174 | } |
fb4c3627 RS |
4175 | } |
4176 | ||
90ab1a81 JB |
4177 | /* Cause C-g and alarm signals to take immediate action, |
4178 | and cause input available signals to zero out timeout. | |
4179 | ||
4180 | It is important that we do this before checking for process | |
4181 | activity. If we get a SIGCHLD after the explicit checks for | |
4182 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4183 | if (read_kbd < 0) |
90ab1a81 JB |
4184 | set_waiting_for_input (&timeout); |
4185 | ||
6be429b1 JB |
4186 | /* If status of something has changed, and no input is |
4187 | available, notify the user of the change right away. After | |
4188 | this explicit check, we'll let the SIGCHLD handler zap | |
4189 | timeout to get our attention. */ | |
4190 | if (update_tick != process_tick && do_display) | |
4191 | { | |
bad49fc7 KS |
4192 | SELECT_TYPE Atemp; |
4193 | #ifdef NON_BLOCKING_CONNECT | |
4194 | SELECT_TYPE Ctemp; | |
4195 | #endif | |
dd2a17ab | 4196 | |
6be429b1 | 4197 | Atemp = input_wait_mask; |
e082ac9d ST |
4198 | #if 0 |
4199 | /* On Mac OS X 10.0, the SELECT system call always says input is | |
e0f712ba | 4200 | present (for reading) at stdin, even when none is. This |
aa87aafc | 4201 | causes the call to SELECT below to return 1 and |
e0f712ba | 4202 | status_notify not to be called. As a result output of |
39b1da20 | 4203 | subprocesses are incorrectly discarded. |
e082ac9d | 4204 | */ |
e0f712ba AC |
4205 | FD_CLR (0, &Atemp); |
4206 | #endif | |
bad49fc7 KS |
4207 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4208 | ||
6be429b1 | 4209 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
0c9960e9 | 4210 | if ((select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4211 | &Atemp, |
bad49fc7 | 4212 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4213 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4214 | #else |
4215 | (SELECT_TYPE *)0, | |
4216 | #endif | |
dd2a17ab | 4217 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4218 | <= 0)) |
90ab1a81 JB |
4219 | { |
4220 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4221 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 JB |
4222 | clear_waiting_for_input (); |
4223 | status_notify (); | |
4224 | } | |
6be429b1 JB |
4225 | } |
4226 | ||
dd2a17ab KS |
4227 | /* Don't wait for output from a non-running process. Just |
4228 | read whatever data has already been received. */ | |
6be429b1 JB |
4229 | if (wait_proc != 0 && !NILP (wait_proc->raw_status_low)) |
4230 | update_status (wait_proc); | |
4231 | if (wait_proc != 0 | |
dd2a17ab KS |
4232 | && ! EQ (wait_proc->status, Qrun) |
4233 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4234 | { |
215b45e9 | 4235 | int nread, total_nread = 0; |
7ce63188 | 4236 | |
9aa2a7f4 | 4237 | clear_waiting_for_input (); |
7ce63188 RS |
4238 | XSETPROCESS (proc, wait_proc); |
4239 | ||
4240 | /* Read data from the process, until we exhaust it. */ | |
e1b37c34 | 4241 | while (XINT (wait_proc->infd) >= 0) |
215b45e9 | 4242 | { |
e1b37c34 GM |
4243 | nread = read_process_output (proc, XINT (wait_proc->infd)); |
4244 | ||
4245 | if (nread == 0) | |
4246 | break; | |
4247 | ||
177c0ea7 | 4248 | if (0 < nread) |
215b45e9 RS |
4249 | total_nread += nread; |
4250 | #ifdef EIO | |
4251 | else if (nread == -1 && EIO == errno) | |
4252 | break; | |
e1b37c34 GM |
4253 | #endif |
4254 | #ifdef EAGAIN | |
4255 | else if (nread == -1 && EAGAIN == errno) | |
4256 | break; | |
4257 | #endif | |
4258 | #ifdef EWOULDBLOCK | |
4259 | else if (nread == -1 && EWOULDBLOCK == errno) | |
4260 | break; | |
215b45e9 RS |
4261 | #endif |
4262 | } | |
7ce63188 | 4263 | if (total_nread > 0 && do_display) |
3007ebfb | 4264 | redisplay_preserve_echo_area (10); |
7ce63188 | 4265 | |
9aa2a7f4 JB |
4266 | break; |
4267 | } | |
6be429b1 | 4268 | |
d0d6b7c5 JB |
4269 | /* Wait till there is something to do */ |
4270 | ||
b89a415a | 4271 | if (wait_proc && just_wait_proc) |
107ed38d | 4272 | { |
b89a415a KS |
4273 | if (XINT (wait_proc->infd) < 0) /* Terminated */ |
4274 | break; | |
107ed38d | 4275 | FD_SET (XINT (wait_proc->infd), &Available); |
bad49fc7 KS |
4276 | check_delay = 0; |
4277 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4278 | } |
4279 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4280 | { |
4281 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4282 | check_delay = 0; |
4283 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4284 | } |
a69281ff | 4285 | else |
dd2a17ab | 4286 | { |
b89a415a | 4287 | if (! read_kbd) |
dd2a17ab KS |
4288 | Available = non_keyboard_wait_mask; |
4289 | else | |
4290 | Available = input_wait_mask; | |
bad49fc7 | 4291 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
3af55251 | 4292 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4293 | } |
d0d6b7c5 | 4294 | |
ff11dfa1 | 4295 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4296 | redisplay now, before we start to wait. There is a race |
4297 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4298 | and indicates that a frame is trashed, the select may block |
4299 | displaying a trashed screen. */ | |
5164ee8e | 4300 | if (frame_garbaged && do_display) |
7286affd RS |
4301 | { |
4302 | clear_waiting_for_input (); | |
3007ebfb | 4303 | redisplay_preserve_echo_area (11); |
b89a415a | 4304 | if (read_kbd < 0) |
7efe788e | 4305 | set_waiting_for_input (&timeout); |
7286affd | 4306 | } |
ffd56f97 | 4307 | |
dd2a17ab | 4308 | no_avail = 0; |
b89a415a | 4309 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4310 | { |
4311 | nfds = 0; | |
dd2a17ab | 4312 | no_avail = 1; |
0a65b032 RS |
4313 | } |
4314 | else | |
dd2a17ab | 4315 | { |
bad49fc7 | 4316 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4317 | if (check_connect) |
4318 | Connecting = connect_wait_mask; | |
bad49fc7 | 4319 | #endif |
2d942bfa KS |
4320 | |
4321 | #ifdef ADAPTIVE_READ_BUFFERING | |
4322 | if (process_output_skip && check_delay > 0) | |
4323 | { | |
4324 | int usecs = EMACS_USECS (timeout); | |
4325 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4326 | usecs = READ_OUTPUT_DELAY_MAX; | |
4327 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4328 | { | |
4329 | proc = chan_process[channel]; | |
4330 | if (NILP (proc)) | |
4331 | continue; | |
9076a823 | 4332 | if (XINT (XPROCESS (proc)->read_output_delay) > 0) |
2d942bfa KS |
4333 | { |
4334 | check_delay--; | |
4335 | if (NILP (XPROCESS (proc)->read_output_skip)) | |
4336 | continue; | |
4337 | FD_CLR (channel, &Available); | |
4338 | XPROCESS (proc)->read_output_skip = Qnil; | |
4339 | if (XINT (XPROCESS (proc)->read_output_delay) < usecs) | |
4340 | usecs = XINT (XPROCESS (proc)->read_output_delay); | |
4341 | } | |
4342 | } | |
4343 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4344 | process_output_skip = 0; | |
4345 | } | |
4346 | #endif | |
4347 | ||
dd2a17ab | 4348 | nfds = select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4349 | &Available, |
bad49fc7 | 4350 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4351 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4352 | #else |
4353 | (SELECT_TYPE *)0, | |
4354 | #endif | |
dd2a17ab KS |
4355 | (SELECT_TYPE *)0, &timeout); |
4356 | } | |
6720a7fb | 4357 | |
d0d6b7c5 JB |
4358 | xerrno = errno; |
4359 | ||
4360 | /* Make C-g and alarm signals set flags again */ | |
4361 | clear_waiting_for_input (); | |
4362 | ||
4363 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4364 | do_pending_window_change (0); |
d0d6b7c5 | 4365 | |
c0239a0b RS |
4366 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4367 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4368 | break; |
4369 | if (nfds < 0) | |
4370 | { | |
4371 | if (xerrno == EINTR) | |
dd2a17ab | 4372 | no_avail = 1; |
b0310da4 JB |
4373 | #ifdef ultrix |
4374 | /* Ultrix select seems to return ENOMEM when it is | |
4375 | interrupted. Treat it just like EINTR. Bleah. Note | |
4376 | that we want to test for the "ultrix" CPP symbol, not | |
4377 | "__ultrix__"; the latter is only defined under GCC, but | |
4378 | not by DEC's bundled CC. -JimB */ | |
8058415c | 4379 | else if (xerrno == ENOMEM) |
dd2a17ab | 4380 | no_avail = 1; |
8058415c | 4381 | #endif |
d0d6b7c5 JB |
4382 | #ifdef ALLIANT |
4383 | /* This happens for no known reason on ALLIANT. | |
4384 | I am guessing that this is the right response. -- RMS. */ | |
4385 | else if (xerrno == EFAULT) | |
dd2a17ab | 4386 | no_avail = 1; |
d0d6b7c5 JB |
4387 | #endif |
4388 | else if (xerrno == EBADF) | |
4389 | { | |
4390 | #ifdef AIX | |
4391 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4392 | the child's closure of the pts gives the parent a SIGHUP, and | |
4393 | the ptc file descriptor is automatically closed, | |
4394 | yielding EBADF here or at select() call above. | |
4395 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4396 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4397 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4398 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4399 | #else |
4400 | abort (); | |
4401 | #endif | |
4402 | } | |
4403 | else | |
68c45bf0 | 4404 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4405 | } |
dd2a17ab KS |
4406 | |
4407 | if (no_avail) | |
4408 | { | |
4409 | FD_ZERO (&Available); | |
bad49fc7 | 4410 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4411 | } |
4412 | ||
26ec91de | 4413 | #if defined(sun) && !defined(USG5_4) |
dd2a17ab KS |
4414 | if (nfds > 0 && keyboard_bit_set (&Available) |
4415 | && interrupt_input) | |
e0109153 JB |
4416 | /* System sometimes fails to deliver SIGIO. |
4417 | ||
4418 | David J. Mackenzie says that Emacs doesn't compile under | |
4419 | Solaris if this code is enabled, thus the USG5_4 in the CPP | |
4420 | conditional. "I haven't noticed any ill effects so far. | |
4421 | If you find a Solaris expert somewhere, they might know | |
4422 | better." */ | |
d0d6b7c5 JB |
4423 | kill (getpid (), SIGIO); |
4424 | #endif | |
4425 | ||
5d5beb62 RS |
4426 | #if 0 /* When polling is used, interrupt_input is 0, |
4427 | so get_input_pending should read the input. | |
4428 | So this should not be needed. */ | |
4429 | /* If we are using polling for input, | |
4430 | and we see input available, make it get read now. | |
4431 | Otherwise it might not actually get read for a second. | |
214d6069 | 4432 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4433 | it might never get read at all if we don't spend much time |
214d6069 | 4434 | outside of wait_reading_process_output. */ |
b89a415a | 4435 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4436 | && keyboard_bit_set (&Available) |
4437 | && input_polling_used ()) | |
4438 | kill (getpid (), SIGALRM); | |
4439 | #endif | |
4440 | ||
d0d6b7c5 JB |
4441 | /* Check for keyboard input */ |
4442 | /* If there is any, return immediately | |
4443 | to give it higher priority than subprocesses */ | |
4444 | ||
b89a415a | 4445 | if (read_kbd != 0) |
6ed6233b | 4446 | { |
a2fab450 | 4447 | int old_timers_run = timers_run; |
c88164fe | 4448 | struct buffer *old_buffer = current_buffer; |
a2fab450 | 4449 | int leave = 0; |
177c0ea7 | 4450 | |
5d6c2aa3 | 4451 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4452 | { |
4453 | swallow_events (do_display); | |
4454 | if (detect_input_pending_run_timers (do_display)) | |
4455 | leave = 1; | |
4456 | } | |
6ed6233b | 4457 | |
a2fab450 GM |
4458 | /* If a timer has run, this might have changed buffers |
4459 | an alike. Make read_key_sequence aware of that. */ | |
4460 | if (timers_run != old_timers_run | |
c88164fe GM |
4461 | && waiting_for_user_input_p == -1 |
4462 | && old_buffer != current_buffer) | |
a2fab450 GM |
4463 | record_asynch_buffer_change (); |
4464 | ||
4465 | if (leave) | |
4466 | break; | |
177c0ea7 JB |
4467 | } |
4468 | ||
69645afc | 4469 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4470 | if (read_kbd != 0 |
69645afc RS |
4471 | && requeued_events_pending_p ()) |
4472 | break; | |
4473 | ||
77e1b3d4 RS |
4474 | /* If we are not checking for keyboard input now, |
4475 | do process events (but don't run any timers). | |
4476 | This is so that X events will be processed. | |
0c9960e9 | 4477 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4478 | That would causes delays in pasting selections, for example. |
4479 | ||
4480 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4481 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4482 | { |
4483 | swallow_events (do_display); | |
0c9960e9 | 4484 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4485 | if (detect_input_pending ()) |
4486 | break; | |
5d5beb62 | 4487 | #endif |
0c9960e9 | 4488 | } |
f854a00b | 4489 | |
84aa3ace | 4490 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4491 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4492 | break; |
4493 | ||
4746118a | 4494 | #ifdef SIGIO |
5d5beb62 | 4495 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4496 | go read it. This can happen with X on BSD after logging out. |
4497 | In that case, there really is no input and no SIGIO, | |
4498 | but select says there is input. */ | |
4499 | ||
b89a415a | 4500 | if (read_kbd && interrupt_input |
2601f59e | 4501 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4502 | kill (getpid (), SIGIO); |
4746118a | 4503 | #endif |
d0d6b7c5 | 4504 | |
d0d6b7c5 JB |
4505 | if (! wait_proc) |
4506 | got_some_input |= nfds > 0; | |
4507 | ||
32676c08 JB |
4508 | /* If checking input just got us a size-change event from X, |
4509 | obey it now if we should. */ | |
b89a415a | 4510 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4511 | do_pending_window_change (0); |
32676c08 | 4512 | |
a9f2c884 | 4513 | /* Check for data from a process. */ |
dd2a17ab KS |
4514 | if (no_avail || nfds == 0) |
4515 | continue; | |
4516 | ||
a9f2c884 RS |
4517 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4518 | but this is safer in the short run. */ | |
a69281ff | 4519 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4520 | { |
a69281ff RS |
4521 | if (FD_ISSET (channel, &Available) |
4522 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4523 | { |
4524 | int nread; | |
4525 | ||
4526 | /* If waiting for this channel, arrange to return as | |
4527 | soon as no more input to be processed. No more | |
4528 | waiting. */ | |
4529 | if (wait_channel == channel) | |
4530 | { | |
a9f2c884 | 4531 | wait_channel = -1; |
d0d6b7c5 JB |
4532 | time_limit = -1; |
4533 | got_some_input = 1; | |
4534 | } | |
4535 | proc = chan_process[channel]; | |
4536 | if (NILP (proc)) | |
4537 | continue; | |
4538 | ||
e690ca94 KS |
4539 | /* If this is a server stream socket, accept connection. */ |
4540 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4541 | { | |
4542 | server_accept_connection (proc, channel); | |
4543 | continue; | |
4544 | } | |
4545 | ||
d0d6b7c5 JB |
4546 | /* Read data from the process, starting with our |
4547 | buffered-ahead character if we have one. */ | |
4548 | ||
4549 | nread = read_process_output (proc, channel); | |
4550 | if (nread > 0) | |
4551 | { | |
4552 | /* Since read_process_output can run a filter, | |
4553 | which can call accept-process-output, | |
4554 | don't try to read from any other processes | |
4555 | before doing the select again. */ | |
4556 | FD_ZERO (&Available); | |
4557 | ||
4558 | if (do_display) | |
3007ebfb | 4559 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4560 | } |
4561 | #ifdef EWOULDBLOCK | |
4562 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4563 | ; | |
0b75e9a4 | 4564 | #endif |
89d7280d RS |
4565 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4566 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4567 | #ifdef O_NONBLOCK |
4568 | else if (nread == -1 && errno == EAGAIN) | |
4569 | ; | |
4570 | #else | |
4571 | #ifdef O_NDELAY | |
4572 | else if (nread == -1 && errno == EAGAIN) | |
4573 | ; | |
4574 | /* Note that we cannot distinguish between no input | |
4575 | available now and a closed pipe. | |
4576 | With luck, a closed pipe will be accompanied by | |
4577 | subprocess termination and SIGCHLD. */ | |
4578 | else if (nread == 0 && !NETCONN_P (proc)) | |
4579 | ; | |
ffd56f97 JB |
4580 | #endif /* O_NDELAY */ |
4581 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4582 | #ifdef HAVE_PTYS |
4583 | /* On some OSs with ptys, when the process on one end of | |
4584 | a pty exits, the other end gets an error reading with | |
4585 | errno = EIO instead of getting an EOF (0 bytes read). | |
4586 | Therefore, if we get an error reading and errno = | |
4587 | EIO, just continue, because the child process has | |
4588 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4589 | get a SIGCHLD). |
4590 | ||
4591 | However, it has been known to happen that the SIGCHLD | |
4592 | got lost. So raise the signl again just in case. | |
4593 | It can't hurt. */ | |
d0d6b7c5 | 4594 | else if (nread == -1 && errno == EIO) |
5651af6d | 4595 | kill (getpid (), SIGCHLD); |
ffd56f97 JB |
4596 | #endif /* HAVE_PTYS */ |
4597 | /* If we can detect process termination, don't consider the process | |
4598 | gone just because its pipe is closed. */ | |
d0d6b7c5 JB |
4599 | #ifdef SIGCHLD |
4600 | else if (nread == 0 && !NETCONN_P (proc)) | |
4601 | ; | |
4602 | #endif | |
4603 | else | |
4604 | { | |
4605 | /* Preserve status of processes already terminated. */ | |
4606 | XSETINT (XPROCESS (proc)->tick, ++process_tick); | |
4607 | deactivate_process (proc); | |
4608 | if (!NILP (XPROCESS (proc)->raw_status_low)) | |
4609 | update_status (XPROCESS (proc)); | |
4610 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4611 | XPROCESS (proc)->status | |
4612 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4613 | } | |
4614 | } | |
177c0ea7 | 4615 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
4616 | if (check_connect && FD_ISSET (channel, &Connecting) |
4617 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
4618 | { |
4619 | struct Lisp_Process *p; | |
dd2a17ab KS |
4620 | |
4621 | FD_CLR (channel, &connect_wait_mask); | |
4622 | if (--num_pending_connects < 0) | |
4623 | abort (); | |
4624 | ||
4625 | proc = chan_process[channel]; | |
4626 | if (NILP (proc)) | |
4627 | continue; | |
4628 | ||
4629 | p = XPROCESS (proc); | |
4630 | ||
4631 | #ifdef GNU_LINUX | |
4632 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
4633 | So only use it on systems where it is known to work. */ | |
4634 | { | |
e690ca94 | 4635 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
4636 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
4637 | xerrno = errno; | |
4638 | } | |
4639 | #else | |
44c887be PJ |
4640 | { |
4641 | struct sockaddr pname; | |
4642 | int pnamelen = sizeof(pname); | |
4643 | ||
4644 | /* If connection failed, getpeername will fail. */ | |
4645 | xerrno = 0; | |
4646 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
4647 | { | |
4648 | /* Obtain connect failure code through error slippage. */ | |
4649 | char dummy; | |
dd2a17ab | 4650 | xerrno = errno; |
44c887be PJ |
4651 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
4652 | xerrno = errno; | |
4653 | } | |
4654 | } | |
dd2a17ab KS |
4655 | #endif |
4656 | if (xerrno) | |
4657 | { | |
4658 | XSETINT (p->tick, ++process_tick); | |
4659 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); | |
4660 | deactivate_process (proc); | |
4661 | } | |
4662 | else | |
4663 | { | |
4664 | p->status = Qrun; | |
4665 | /* Execute the sentinel here. If we had relied on | |
4666 | status_notify to do it later, it will read input | |
4667 | from the process before calling the sentinel. */ | |
4668 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4669 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab KS |
4670 | { |
4671 | FD_SET (XINT (p->infd), &input_wait_mask); | |
4672 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
4673 | } | |
4674 | } | |
4675 | } | |
4676 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4677 | } /* end for each file descriptor */ |
4678 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4679 | |
855448dc | 4680 | waiting_for_user_input_p = saved_waiting_for_user_input_p; |
d430ee71 | 4681 | |
ffd56f97 JB |
4682 | /* If calling from keyboard input, do not quit |
4683 | since we want to return C-g as an input character. | |
4684 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4685 | if (read_kbd >= 0) |
ffd56f97 JB |
4686 | { |
4687 | /* Prevent input_pending from remaining set if we quit. */ | |
4688 | clear_input_pending (); | |
4689 | QUIT; | |
4690 | } | |
19310311 | 4691 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4692 | /* AlainF 5-Jul-1996 |
4693 | HP-UX 10.10 seems to have problems with signals coming in | |
4694 | Causes "poll: interrupted system call" messages when Emacs is run | |
4695 | in an X window | |
4696 | Turn periodic alarms back on */ | |
5d5beb62 | 4697 | start_polling (); |
19310311 | 4698 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
efa2a55c | 4699 | |
d0d6b7c5 JB |
4700 | return got_some_input; |
4701 | } | |
4702 | \f | |
3b9a3dfa RS |
4703 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4704 | ||
4705 | static Lisp_Object | |
4706 | read_process_output_call (fun_and_args) | |
4707 | Lisp_Object fun_and_args; | |
4708 | { | |
70949dac | 4709 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4710 | } |
4711 | ||
4712 | static Lisp_Object | |
4713 | read_process_output_error_handler (error) | |
4714 | Lisp_Object error; | |
4715 | { | |
4716 | cmd_error_internal (error, "error in process filter: "); | |
4717 | Vinhibit_quit = Qt; | |
4718 | update_echo_area (); | |
833ba342 | 4719 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4720 | return Qt; |
3b9a3dfa RS |
4721 | } |
4722 | ||
d0d6b7c5 JB |
4723 | /* Read pending output from the process channel, |
4724 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 4725 | Yield number of decoded characters read. |
d0d6b7c5 | 4726 | |
116c423c | 4727 | This function reads at most 4096 characters. |
d0d6b7c5 | 4728 | If you want to read all available subprocess output, |
0fa1789e KH |
4729 | you must call it repeatedly until it returns zero. |
4730 | ||
4731 | The characters read are decoded according to PROC's coding-system | |
4732 | for decoding. */ | |
d0d6b7c5 | 4733 | |
dfcf069d | 4734 | int |
d0d6b7c5 JB |
4735 | read_process_output (proc, channel) |
4736 | Lisp_Object proc; | |
4737 | register int channel; | |
4738 | { | |
e1283999 | 4739 | register int nbytes; |
d0d6b7c5 | 4740 | char *chars; |
d0d6b7c5 JB |
4741 | register Lisp_Object outstream; |
4742 | register struct buffer *old = current_buffer; | |
4743 | register struct Lisp_Process *p = XPROCESS (proc); | |
4744 | register int opoint; | |
c7580538 | 4745 | struct coding_system *coding = proc_decode_coding_system[channel]; |
e7fbaa65 | 4746 | int carryover = XINT (p->decoding_carryover); |
116c423c | 4747 | int readmax = 4096; |
d0d6b7c5 JB |
4748 | |
4749 | #ifdef VMS | |
4750 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); | |
4751 | ||
4752 | vs = get_vms_process_pointer (p->pid); | |
4753 | if (vs) | |
4754 | { | |
4755 | if (!vs->iosb[0]) | |
a319f7c1 | 4756 | return (0); /* Really weird if it does this */ |
d0d6b7c5 JB |
4757 | if (!(vs->iosb[0] & 1)) |
4758 | return -1; /* I/O error */ | |
4759 | } | |
4760 | else | |
4761 | error ("Could not get VMS process pointer"); | |
4762 | chars = vs->inputBuffer; | |
1d2fc612 RS |
4763 | nbytes = clean_vms_buffer (chars, vs->iosb[1]); |
4764 | if (nbytes <= 0) | |
d0d6b7c5 JB |
4765 | { |
4766 | start_vms_process_read (vs); /* Crank up the next read on the process */ | |
4767 | return 1; /* Nothing worth printing, say we got 1 */ | |
4768 | } | |
e7fbaa65 | 4769 | if (carryover > 0) |
0fa1789e | 4770 | { |
e7fbaa65 KH |
4771 | /* The data carried over in the previous decoding (which are at |
4772 | the tail of decoding buffer) should be prepended to the new | |
4773 | data read to decode all together. */ | |
ed7a4b2d | 4774 | chars = (char *) alloca (nbytes + carryover); |
d5db4077 | 4775 | bcopy (SDATA (p->decoding_buf), buf, carryover); |
ed7a4b2d | 4776 | bcopy (vs->inputBuffer, chars + carryover, nbytes); |
0fa1789e | 4777 | } |
d0d6b7c5 | 4778 | #else /* not VMS */ |
e690ca94 | 4779 | |
e690ca94 | 4780 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
4781 | if (carryover) |
4782 | /* See the comment above. */ | |
d5db4077 | 4783 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 4784 | |
e690ca94 KS |
4785 | #ifdef DATAGRAM_SOCKETS |
4786 | /* We have a working select, so proc_buffered_char is always -1. */ | |
4787 | if (DATAGRAM_CHAN_P (channel)) | |
4788 | { | |
4789 | int len = datagram_address[channel].len; | |
39b1da20 | 4790 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
4791 | 0, datagram_address[channel].sa, &len); |
4792 | } | |
4793 | else | |
4794 | #endif | |
d0d6b7c5 | 4795 | if (proc_buffered_char[channel] < 0) |
2d942bfa | 4796 | { |
39b1da20 | 4797 | nbytes = emacs_read (channel, chars + carryover, readmax); |
2d942bfa | 4798 | #ifdef ADAPTIVE_READ_BUFFERING |
39b1da20 | 4799 | if (nbytes > 0 && !NILP (p->adaptive_read_buffering)) |
2d942bfa KS |
4800 | { |
4801 | int delay = XINT (p->read_output_delay); | |
05b72afd | 4802 | if (nbytes < 256) |
2d942bfa KS |
4803 | { |
4804 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
4805 | { | |
4806 | if (delay == 0) | |
4807 | process_output_delay_count++; | |
4808 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
4809 | } | |
4810 | } | |
39b1da20 | 4811 | else if (delay > 0 && (nbytes == readmax)) |
2d942bfa KS |
4812 | { |
4813 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
4814 | if (delay == 0) | |
4815 | process_output_delay_count--; | |
4816 | } | |
4817 | XSETINT (p->read_output_delay, delay); | |
4818 | if (delay) | |
4819 | { | |
4820 | p->read_output_skip = Qt; | |
4821 | process_output_skip = 1; | |
4822 | } | |
4823 | } | |
4824 | #endif | |
4825 | } | |
d0d6b7c5 JB |
4826 | else |
4827 | { | |
ed7a4b2d | 4828 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 4829 | proc_buffered_char[channel] = -1; |
39b1da20 | 4830 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
4831 | if (nbytes < 0) |
4832 | nbytes = 1; | |
d0d6b7c5 | 4833 | else |
1d2fc612 | 4834 | nbytes = nbytes + 1; |
d0d6b7c5 JB |
4835 | } |
4836 | #endif /* not VMS */ | |
4837 | ||
ca65341e KH |
4838 | XSETINT (p->decoding_carryover, 0); |
4839 | ||
ed7a4b2d | 4840 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 4841 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
4842 | if (nbytes <= 0) |
4843 | { | |
4844 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
4845 | return nbytes; | |
4846 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
4847 | } | |
d0d6b7c5 | 4848 | |
1d2fc612 | 4849 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 4850 | nbytes += carryover; |
0fa1789e | 4851 | |
1d2fc612 | 4852 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
4853 | outstream = p->filter; |
4854 | if (!NILP (outstream)) | |
4855 | { | |
177c0ea7 | 4856 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
4857 | hitting ^G when a filter happens to be running won't screw |
4858 | it up. */ | |
aed13378 | 4859 | int count = SPECPDL_INDEX (); |
30c78175 | 4860 | Lisp_Object odeactivate; |
dfc21838 | 4861 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 4862 | Lisp_Object text; |
4da2f5be | 4863 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 4864 | int waiting = waiting_for_user_input_p; |
30c78175 | 4865 | |
dfc21838 RS |
4866 | /* No need to gcpro these, because all we do with them later |
4867 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 4868 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
4869 | XSETBUFFER (obuffer, current_buffer); |
4870 | okeymap = current_buffer->keymap; | |
30c78175 | 4871 | |
d0d6b7c5 | 4872 | specbind (Qinhibit_quit, Qt); |
6545aada | 4873 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 4874 | |
4da2f5be RS |
4875 | /* In case we get recursively called, |
4876 | and we already saved the match data nonrecursively, | |
4877 | save the same match data in safely recursive fashion. */ | |
4878 | if (outer_running_asynch_code) | |
4879 | { | |
4880 | Lisp_Object tem; | |
4881 | /* Don't clobber the CURRENT match data, either! */ | |
dd130227 | 4882 | tem = Fmatch_data (Qnil, Qnil); |
4da2f5be | 4883 | restore_match_data (); |
8f1ecd05 RS |
4884 | record_unwind_protect (Fset_match_data, Fmatch_data (Qnil, Qnil)); |
4885 | Fset_match_data (tem); | |
4da2f5be RS |
4886 | } |
4887 | ||
4888 | /* For speed, if a search happens within this code, | |
4889 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 4890 | running_asynch_code = 1; |
4da2f5be | 4891 | |
ed7a4b2d KH |
4892 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
4893 | coding, 0); | |
082a1df2 | 4894 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
4895 | /* A new coding system might be found. */ |
4896 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
4897 | { | |
4898 | p->decode_coding_system = coding->symbol; | |
4899 | ||
4900 | /* Don't call setup_coding_system for | |
4901 | proc_decode_coding_system[channel] here. It is done in | |
4902 | detect_coding called via decode_coding above. */ | |
4903 | ||
4904 | /* If a coding system for encoding is not yet decided, we set | |
4905 | it as the same as coding-system for decoding. | |
4906 | ||
4907 | But, before doing that we must check if | |
4908 | proc_encode_coding_system[p->outfd] surely points to a | |
4909 | valid memory because p->outfd will be changed once EOF is | |
4910 | sent to the process. */ | |
4911 | if (NILP (p->encode_coding_system) | |
4912 | && proc_encode_coding_system[XINT (p->outfd)]) | |
4913 | { | |
4914 | p->encode_coding_system = coding->symbol; | |
4915 | setup_coding_system (coding->symbol, | |
4916 | proc_encode_coding_system[XINT (p->outfd)]); | |
4917 | } | |
4918 | } | |
51c6067d | 4919 | |
ed7a4b2d | 4920 | carryover = nbytes - coding->consumed; |
d7d2483a KS |
4921 | if (SCHARS (p->decoding_buf) < carryover) |
4922 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 4923 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
4924 | carryover); |
4925 | XSETINT (p->decoding_carryover, carryover); | |
03f04413 KH |
4926 | /* Adjust the multibyteness of TEXT to that of the filter. */ |
4927 | if (NILP (p->filter_multibyte) != ! STRING_MULTIBYTE (text)) | |
4928 | text = (STRING_MULTIBYTE (text) | |
4929 | ? Fstring_as_unibyte (text) | |
4930 | : Fstring_to_multibyte (text)); | |
e430e5ba | 4931 | if (SBYTES (text) > 0) |
dd97db06 KH |
4932 | internal_condition_case_1 (read_process_output_call, |
4933 | Fcons (outstream, | |
4934 | Fcons (proc, Fcons (text, Qnil))), | |
4935 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
4936 | read_process_output_error_handler); | |
4da2f5be RS |
4937 | |
4938 | /* If we saved the match data nonrecursively, restore it now. */ | |
7074fde6 | 4939 | restore_match_data (); |
4da2f5be | 4940 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 4941 | |
592ce97f | 4942 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
4943 | Vdeactivate_mark = odeactivate; |
4944 | ||
bbce7d72 RS |
4945 | /* Restore waiting_for_user_input_p as it was |
4946 | when we were called, in case the filter clobbered it. */ | |
4947 | waiting_for_user_input_p = waiting; | |
4948 | ||
7973cfa8 RS |
4949 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
4950 | because we might have changed minor modes or other things | |
4951 | that affect key bindings. */ | |
dfc21838 RS |
4952 | if (! EQ (Fcurrent_buffer (), obuffer) |
4953 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 4954 | #endif |
927e08be RS |
4955 | /* But do it only if the caller is actually going to read events. |
4956 | Otherwise there's no need to make him wake up, and it could | |
4957 | cause trouble (for example it would make Fsit_for return). */ | |
4958 | if (waiting_for_user_input_p == -1) | |
4959 | record_asynch_buffer_change (); | |
d72534ba | 4960 | |
d0d6b7c5 JB |
4961 | #ifdef VMS |
4962 | start_vms_process_read (vs); | |
4963 | #endif | |
2ea6d561 | 4964 | unbind_to (count, Qnil); |
e430e5ba | 4965 | return nbytes; |
d0d6b7c5 JB |
4966 | } |
4967 | ||
4968 | /* If no filter, write into buffer if it isn't dead. */ | |
4969 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
4970 | { | |
b0310da4 | 4971 | Lisp_Object old_read_only; |
12ca5cdf | 4972 | int old_begv, old_zv; |
d8a2934e | 4973 | int old_begv_byte, old_zv_byte; |
30c78175 | 4974 | Lisp_Object odeactivate; |
d8a2934e RS |
4975 | int before, before_byte; |
4976 | int opoint_byte; | |
ed7a4b2d | 4977 | Lisp_Object text; |
926b7e5e | 4978 | struct buffer *b; |
30c78175 RS |
4979 | |
4980 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 JB |
4981 | |
4982 | Fset_buffer (p->buffer); | |
6ec8bbd2 | 4983 | opoint = PT; |
d8a2934e | 4984 | opoint_byte = PT_BYTE; |
b0310da4 | 4985 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
4986 | old_begv = BEGV; |
4987 | old_zv = ZV; | |
d8a2934e RS |
4988 | old_begv_byte = BEGV_BYTE; |
4989 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
4990 | |
4991 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
4992 | |
4993 | /* Insert new output into buffer | |
4994 | at the current end-of-output marker, | |
4995 | thus preserving logical ordering of input and output. */ | |
4996 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
4997 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
4998 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
4999 | ZV_BYTE)); | |
d0d6b7c5 | 5000 | else |
d8a2934e | 5001 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5002 | before = PT; |
d8a2934e | 5003 | before_byte = PT_BYTE; |
b0310da4 JB |
5004 | |
5005 | /* If the output marker is outside of the visible region, save | |
5006 | the restriction and widen. */ | |
6ec8bbd2 | 5007 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5008 | Fwiden (); |
5009 | ||
ed7a4b2d KH |
5010 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
5011 | coding, 0); | |
082a1df2 | 5012 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
5013 | /* A new coding system might be found. See the comment in the |
5014 | similar code in the previous `if' block. */ | |
5015 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
5016 | { | |
5017 | p->decode_coding_system = coding->symbol; | |
5018 | if (NILP (p->encode_coding_system) | |
5019 | && proc_encode_coding_system[XINT (p->outfd)]) | |
5020 | { | |
5021 | p->encode_coding_system = coding->symbol; | |
5022 | setup_coding_system (coding->symbol, | |
5023 | proc_encode_coding_system[XINT (p->outfd)]); | |
5024 | } | |
5025 | } | |
5026 | carryover = nbytes - coding->consumed; | |
d7d2483a KS |
5027 | if (SCHARS (p->decoding_buf) < carryover) |
5028 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 5029 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
5030 | carryover); |
5031 | XSETINT (p->decoding_carryover, carryover); | |
d69864bf KH |
5032 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5033 | if (NILP (current_buffer->enable_multibyte_characters) | |
5034 | != ! STRING_MULTIBYTE (text)) | |
5035 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5036 | ? Fstring_as_unibyte (text) |
03f04413 | 5037 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5038 | /* Insert before markers in case we are inserting where |
5039 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5040 | insert_from_string_before_markers (text, 0, 0, |
5041 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5042 | |
926b7e5e GM |
5043 | /* Make sure the process marker's position is valid when the |
5044 | process buffer is changed in the signal_after_change above. | |
5045 | W3 is known to do that. */ | |
5046 | if (BUFFERP (p->buffer) | |
5047 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5048 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5049 | else | |
5050 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5051 | |
d0d6b7c5 JB |
5052 | update_mode_lines++; |
5053 | ||
12ca5cdf RS |
5054 | /* Make sure opoint and the old restrictions |
5055 | float ahead of any new text just as point would. */ | |
5056 | if (opoint >= before) | |
d8a2934e RS |
5057 | { |
5058 | opoint += PT - before; | |
5059 | opoint_byte += PT_BYTE - before_byte; | |
5060 | } | |
12ca5cdf | 5061 | if (old_begv > before) |
d8a2934e RS |
5062 | { |
5063 | old_begv += PT - before; | |
5064 | old_begv_byte += PT_BYTE - before_byte; | |
5065 | } | |
12ca5cdf | 5066 | if (old_zv >= before) |
d8a2934e RS |
5067 | { |
5068 | old_zv += PT - before; | |
5069 | old_zv_byte += PT_BYTE - before_byte; | |
5070 | } | |
12ca5cdf | 5071 | |
b0310da4 | 5072 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5073 | if (old_begv != BEGV || old_zv != ZV) |
5074 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5075 | |
592ce97f | 5076 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5077 | Vdeactivate_mark = odeactivate; |
5078 | ||
b0310da4 | 5079 | current_buffer->read_only = old_read_only; |
d8a2934e | 5080 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 JB |
5081 | set_buffer_internal (old); |
5082 | } | |
5083 | #ifdef VMS | |
5084 | start_vms_process_read (vs); | |
5085 | #endif | |
1d2fc612 | 5086 | return nbytes; |
d0d6b7c5 JB |
5087 | } |
5088 | ||
5089 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
5090 | 0, 0, 0, | |
f3d9532b | 5091 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
fdb82f93 PJ |
5092 | This is intended for use by asynchronous process output filters and sentinels. */) |
5093 | () | |
d0d6b7c5 | 5094 | { |
8b4d685f | 5095 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
5096 | } |
5097 | \f | |
5098 | /* Sending data to subprocess */ | |
5099 | ||
5100 | jmp_buf send_process_frame; | |
0daad115 | 5101 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5102 | |
5103 | SIGTYPE | |
5104 | send_process_trap () | |
5105 | { | |
333f1b6f | 5106 | SIGNAL_THREAD_CHECK (SIGPIPE); |
d0d6b7c5 JB |
5107 | #ifdef BSD4_1 |
5108 | sigrelse (SIGPIPE); | |
5109 | sigrelse (SIGALRM); | |
5110 | #endif /* BSD4_1 */ | |
5111 | longjmp (send_process_frame, 1); | |
5112 | } | |
5113 | ||
4556b700 RS |
5114 | /* Send some data to process PROC. |
5115 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5116 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5117 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5118 | |
a92e4183 KH |
5119 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5120 | for encoding before it is sent. | |
1fb0098c GM |
5121 | |
5122 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5123 | |
dfcf069d | 5124 | void |
4556b700 | 5125 | send_process (proc, buf, len, object) |
ecd1f654 | 5126 | volatile Lisp_Object proc; |
0daad115 GM |
5127 | unsigned char *volatile buf; |
5128 | volatile int len; | |
5129 | volatile Lisp_Object object; | |
d0d6b7c5 | 5130 | { |
ecd1f654 | 5131 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
2d942bfa | 5132 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5133 | int rv; |
0fa1789e | 5134 | struct coding_system *coding; |
6044e593 RS |
5135 | struct gcpro gcpro1; |
5136 | ||
5137 | GCPRO1 (object); | |
d0d6b7c5 | 5138 | |
d0d6b7c5 | 5139 | #ifdef VMS |
d0d6b7c5 JB |
5140 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); |
5141 | #endif /* VMS */ | |
5142 | ||
2d942bfa KS |
5143 | if (! NILP (p->raw_status_low)) |
5144 | update_status (p); | |
5145 | if (! EQ (p->status, Qrun)) | |
5146 | error ("Process %s not running", SDATA (p->name)); | |
5147 | if (XINT (p->outfd) < 0) | |
5148 | error ("Output file descriptor of %s is closed", SDATA (p->name)); | |
0fa1789e | 5149 | |
2d942bfa | 5150 | coding = proc_encode_coding_system[XINT (p->outfd)]; |
486b111b KH |
5151 | Vlast_coding_system_used = coding->symbol; |
5152 | ||
ed7a4b2d KH |
5153 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5154 | || (BUFFERP (object) | |
a92e4183 KH |
5155 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5156 | || EQ (object, Qt)) | |
278bfdd6 | 5157 | { |
2d942bfa | 5158 | if (!EQ (coding->symbol, p->encode_coding_system)) |
278bfdd6 KH |
5159 | /* The coding system for encoding was changed to raw-text |
5160 | because we sent a unibyte text previously. Now we are | |
5161 | sending a multibyte text, thus we must encode it by the | |
2d942bfa KS |
5162 | original coding system specified for the current process. */ |
5163 | setup_coding_system (p->encode_coding_system, coding); | |
fbb70ad9 EZ |
5164 | /* src_multibyte should be set to 1 _after_ a call to |
5165 | setup_coding_system, since it resets src_multibyte to | |
5166 | zero. */ | |
5167 | coding->src_multibyte = 1; | |
278bfdd6 KH |
5168 | } |
5169 | else | |
5170 | { | |
a92e4183 KH |
5171 | /* For sending a unibyte text, character code conversion should |
5172 | not take place but EOL conversion should. So, setup raw-text | |
5173 | or one of the subsidiary if we have not yet done it. */ | |
5174 | if (coding->type != coding_type_raw_text) | |
5175 | { | |
5176 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5177 | { | |
5178 | /* But, before changing the coding, we must flush out data. */ | |
5179 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5180 | send_process (proc, "", 0, Qt); | |
5181 | } | |
5182 | coding->src_multibyte = 0; | |
5183 | setup_raw_text_coding_system (coding); | |
5184 | } | |
278bfdd6 | 5185 | } |
a4a37e65 KH |
5186 | coding->dst_multibyte = 0; |
5187 | ||
ed7a4b2d | 5188 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e KH |
5189 | { |
5190 | int require = encoding_buffer_size (coding, len); | |
0daad115 | 5191 | int from_byte = -1, from = -1, to = -1; |
0fa1789e | 5192 | |
ed7a4b2d | 5193 | if (BUFFERP (object)) |
0fa1789e | 5194 | { |
ed7a4b2d KH |
5195 | from_byte = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5196 | from = buf_bytepos_to_charpos (XBUFFER (object), from_byte); | |
5197 | to = buf_bytepos_to_charpos (XBUFFER (object), from_byte + len); | |
5198 | } | |
5199 | else if (STRINGP (object)) | |
5200 | { | |
d5db4077 | 5201 | from_byte = buf - SDATA (object); |
ed7a4b2d KH |
5202 | from = string_byte_to_char (object, from_byte); |
5203 | to = string_byte_to_char (object, from_byte + len); | |
0fa1789e KH |
5204 | } |
5205 | ||
452294c2 GM |
5206 | if (coding->composing != COMPOSITION_DISABLED) |
5207 | { | |
5208 | if (from_byte >= 0) | |
5209 | coding_save_composition (coding, from, to, object); | |
5210 | else | |
5211 | coding->composing = COMPOSITION_DISABLED; | |
5212 | } | |
ed7a4b2d | 5213 | |
2d942bfa KS |
5214 | if (SBYTES (p->encoding_buf) < require) |
5215 | p->encoding_buf = make_uninit_string (require); | |
ed7a4b2d KH |
5216 | |
5217 | if (from_byte >= 0) | |
5218 | buf = (BUFFERP (object) | |
5219 | ? BUF_BYTE_ADDRESS (XBUFFER (object), from_byte) | |
d5db4077 | 5220 | : SDATA (object) + from_byte); |
0fa1789e | 5221 | |
2d942bfa | 5222 | object = p->encoding_buf; |
d5db4077 KR |
5223 | encode_coding (coding, (char *) buf, SDATA (object), |
5224 | len, SBYTES (object)); | |
9de36315 | 5225 | coding_free_composition_data (coding); |
e7fbaa65 | 5226 | len = coding->produced; |
d5db4077 | 5227 | buf = SDATA (object); |
0fa1789e | 5228 | } |
d0d6b7c5 JB |
5229 | |
5230 | #ifdef VMS | |
5231 | vs = get_vms_process_pointer (p->pid); | |
5232 | if (vs == 0) | |
5233 | error ("Could not find this process: %x", p->pid); | |
5234 | else if (write_to_vms_process (vs, buf, len)) | |
5235 | ; | |
0daad115 | 5236 | #else /* not VMS */ |
4556b700 RS |
5237 | |
5238 | if (pty_max_bytes == 0) | |
5239 | { | |
5240 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
2d942bfa | 5241 | pty_max_bytes = fpathconf (XFASTINT (p->outfd), _PC_MAX_CANON); |
4556b700 RS |
5242 | if (pty_max_bytes < 0) |
5243 | pty_max_bytes = 250; | |
5244 | #else | |
5245 | pty_max_bytes = 250; | |
5246 | #endif | |
5247 | /* Deduct one, to leave space for the eof. */ | |
5248 | pty_max_bytes--; | |
5249 | } | |
5250 | ||
0daad115 GM |
5251 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5252 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5253 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5254 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5255 | { |
5256 | process_sent_to = proc; | |
5257 | while (len > 0) | |
5258 | { | |
5259 | int this = len; | |
5260 | SIGTYPE (*old_sigpipe)(); | |
93b4f699 | 5261 | |
0daad115 GM |
5262 | /* Decide how much data we can send in one batch. |
5263 | Long lines need to be split into multiple batches. */ | |
2d942bfa | 5264 | if (!NILP (p->pty_flag)) |
0daad115 | 5265 | { |
c0ec53ad SM |
5266 | /* Starting this at zero is always correct when not the first |
5267 | iteration because the previous iteration ended by sending C-d. | |
0daad115 GM |
5268 | It may not be correct for the first iteration |
5269 | if a partial line was sent in a separate send_process call. | |
5270 | If that proves worth handling, we need to save linepos | |
5271 | in the process object. */ | |
5272 | int linepos = 0; | |
5273 | unsigned char *ptr = (unsigned char *) buf; | |
5274 | unsigned char *end = (unsigned char *) buf + len; | |
5275 | ||
5276 | /* Scan through this text for a line that is too long. */ | |
5277 | while (ptr != end && linepos < pty_max_bytes) | |
5278 | { | |
5279 | if (*ptr == '\n') | |
5280 | linepos = 0; | |
5281 | else | |
5282 | linepos++; | |
5283 | ptr++; | |
5284 | } | |
5285 | /* If we found one, break the line there | |
5286 | and put in a C-d to force the buffer through. */ | |
5287 | this = ptr - buf; | |
5288 | } | |
93b4f699 | 5289 | |
0daad115 GM |
5290 | /* Send this batch, using one or more write calls. */ |
5291 | while (this > 0) | |
5292 | { | |
2d942bfa | 5293 | int outfd = XINT (p->outfd); |
0daad115 | 5294 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5295 | #ifdef DATAGRAM_SOCKETS |
5296 | if (DATAGRAM_CHAN_P (outfd)) | |
5297 | { | |
5298 | rv = sendto (outfd, (char *) buf, this, | |
5299 | 0, datagram_address[outfd].sa, | |
5300 | datagram_address[outfd].len); | |
5301 | if (rv < 0 && errno == EMSGSIZE) | |
5302 | report_file_error ("sending datagram", Fcons (proc, Qnil)); | |
5303 | } | |
5304 | else | |
5305 | #endif | |
2d942bfa KS |
5306 | { |
5307 | rv = emacs_write (outfd, (char *) buf, this); | |
5308 | #ifdef ADAPTIVE_READ_BUFFERING | |
5309 | if (XINT (p->read_output_delay) > 0 | |
5310 | && EQ (p->adaptive_read_buffering, Qt)) | |
5311 | { | |
5312 | XSETFASTINT (p->read_output_delay, 0); | |
5313 | process_output_delay_count--; | |
5314 | p->read_output_skip = Qnil; | |
5315 | } | |
5316 | #endif | |
5317 | } | |
0daad115 | 5318 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5319 | |
0daad115 GM |
5320 | if (rv < 0) |
5321 | { | |
5322 | if (0 | |
d0d6b7c5 | 5323 | #ifdef EWOULDBLOCK |
0daad115 | 5324 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5325 | #endif |
5326 | #ifdef EAGAIN | |
0daad115 | 5327 | || errno == EAGAIN |
d0d6b7c5 | 5328 | #endif |
0daad115 | 5329 | ) |
177c0ea7 | 5330 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5331 | that may allow the program |
5332 | to finish doing output and read more. */ | |
5333 | { | |
0daad115 | 5334 | int offset = 0; |
4556b700 | 5335 | |
3433b6bd | 5336 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5337 | /* A gross hack to work around a bug in FreeBSD. |
5338 | In the following sequence, read(2) returns | |
5339 | bogus data: | |
5340 | ||
5341 | write(2) 1022 bytes | |
5342 | write(2) 954 bytes, get EAGAIN | |
5343 | read(2) 1024 bytes in process_read_output | |
5344 | read(2) 11 bytes in process_read_output | |
5345 | ||
5346 | That is, read(2) returns more bytes than have | |
5347 | ever been written successfully. The 1033 bytes | |
5348 | read are the 1022 bytes written successfully | |
5349 | after processing (for example with CRs added if | |
5350 | the terminal is set up that way which it is | |
5351 | here). The same bytes will be seen again in a | |
5352 | later read(2), without the CRs. */ | |
177c0ea7 | 5353 | |
0daad115 GM |
5354 | if (errno == EAGAIN) |
5355 | { | |
5356 | int flags = FWRITE; | |
2d942bfa | 5357 | ioctl (XINT (p->outfd), TIOCFLUSH, &flags); |
0daad115 | 5358 | } |
3433b6bd | 5359 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5360 | |
0daad115 GM |
5361 | /* Running filters might relocate buffers or strings. |
5362 | Arrange to relocate BUF. */ | |
5363 | if (BUFFERP (object)) | |
5364 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); | |
5365 | else if (STRINGP (object)) | |
d5db4077 | 5366 | offset = buf - SDATA (object); |
0daad115 | 5367 | |
f3e6605c | 5368 | #ifdef EMACS_HAS_USECS |
214d6069 | 5369 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5370 | #else |
214d6069 | 5371 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5372 | #endif |
4556b700 | 5373 | |
0daad115 GM |
5374 | if (BUFFERP (object)) |
5375 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); | |
5376 | else if (STRINGP (object)) | |
d5db4077 | 5377 | buf = offset + SDATA (object); |
4556b700 | 5378 | |
0daad115 GM |
5379 | rv = 0; |
5380 | } | |
5381 | else | |
5382 | /* This is a real error. */ | |
5383 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5384 | } | |
5385 | buf += rv; | |
5386 | len -= rv; | |
5387 | this -= rv; | |
5388 | } | |
f76475ad | 5389 | |
0daad115 GM |
5390 | /* If we sent just part of the string, put in an EOF |
5391 | to force it through, before we send the rest. */ | |
5392 | if (len > 0) | |
5393 | Fprocess_send_eof (proc); | |
5394 | } | |
5395 | } | |
5396 | #endif /* not VMS */ | |
d0d6b7c5 JB |
5397 | else |
5398 | { | |
0daad115 GM |
5399 | #ifndef VMS |
5400 | proc = process_sent_to; | |
2d942bfa | 5401 | p = XPROCESS (proc); |
0daad115 | 5402 | #endif |
2d942bfa KS |
5403 | p->raw_status_low = Qnil; |
5404 | p->raw_status_high = Qnil; | |
5405 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5406 | XSETINT (p->tick, ++process_tick); | |
d0d6b7c5 JB |
5407 | deactivate_process (proc); |
5408 | #ifdef VMS | |
2d942bfa | 5409 | error ("Error writing to process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5410 | #else |
2d942bfa | 5411 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5412 | #endif |
5413 | } | |
6044e593 RS |
5414 | |
5415 | UNGCPRO; | |
d0d6b7c5 JB |
5416 | } |
5417 | ||
5418 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5419 | 3, 3, 0, |
5420 | doc: /* Send current contents of region as input to PROCESS. | |
5421 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5422 | nil, indicating the current buffer's process. | |
5423 | Called from program, takes three arguments, PROCESS, START and END. | |
5424 | If the region is more than 500 characters long, | |
5425 | it is sent in several bunches. This may happen even for shorter regions. | |
5426 | Output from processes can arrive in between bunches. */) | |
5427 | (process, start, end) | |
d0d6b7c5 JB |
5428 | Lisp_Object process, start, end; |
5429 | { | |
5430 | Lisp_Object proc; | |
d8a2934e | 5431 | int start1, end1; |
d0d6b7c5 JB |
5432 | |
5433 | proc = get_process (process); | |
5434 | validate_region (&start, &end); | |
5435 | ||
5436 | if (XINT (start) < GPT && XINT (end) > GPT) | |
4da6dec8 | 5437 | move_gap (XINT (start)); |
d0d6b7c5 | 5438 | |
d8a2934e RS |
5439 | start1 = CHAR_TO_BYTE (XINT (start)); |
5440 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5441 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
4556b700 | 5442 | Fcurrent_buffer ()); |
d0d6b7c5 JB |
5443 | |
5444 | return Qnil; | |
5445 | } | |
5446 | ||
5447 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5448 | 2, 2, 0, |
5449 | doc: /* Send PROCESS the contents of STRING as input. | |
5450 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5451 | nil, indicating the current buffer's process. | |
5452 | If STRING is more than 500 characters long, | |
5453 | it is sent in several bunches. This may happen even for shorter strings. | |
5454 | Output from processes can arrive in between bunches. */) | |
5455 | (process, string) | |
d0d6b7c5 JB |
5456 | Lisp_Object process, string; |
5457 | { | |
5458 | Lisp_Object proc; | |
b7826503 | 5459 | CHECK_STRING (string); |
d0d6b7c5 | 5460 | proc = get_process (process); |
d5db4077 KR |
5461 | send_process (proc, SDATA (string), |
5462 | SBYTES (string), string); | |
d0d6b7c5 JB |
5463 | return Qnil; |
5464 | } | |
5465 | \f | |
16782258 JD |
5466 | /* Return the foreground process group for the tty/pty that |
5467 | the process P uses. */ | |
5468 | static int | |
5469 | emacs_get_tty_pgrp (p) | |
5470 | struct Lisp_Process *p; | |
5471 | { | |
5472 | int gid = -1; | |
5473 | ||
f3d9532b | 5474 | #ifdef TIOCGPGRP |
16782258 JD |
5475 | if (ioctl (XINT (p->infd), TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
5476 | { | |
5477 | int fd; | |
5478 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5479 | master side. Try the slave side. */ | |
5480 | fd = emacs_open (XSTRING (p->tty_name)->data, O_RDONLY, 0); | |
5481 | ||
5482 | if (fd != -1) | |
5483 | { | |
5484 | ioctl (fd, TIOCGPGRP, &gid); | |
5485 | emacs_close (fd); | |
5486 | } | |
5487 | } | |
5488 | #endif /* defined (TIOCGPGRP ) */ | |
5489 | ||
5490 | return gid; | |
5491 | } | |
5492 | ||
b81ea5ef RS |
5493 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5494 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5495 | doc: /* Return t if PROCESS has given the terminal to a child. |
5496 | If the operating system does not make it possible to find out, | |
5497 | return t unconditionally. */) | |
5498 | (process) | |
b81ea5ef RS |
5499 | Lisp_Object process; |
5500 | { | |
5501 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5502 | in a way that will cause returning t. */ | |
16782258 | 5503 | int gid; |
b81ea5ef RS |
5504 | Lisp_Object proc; |
5505 | struct Lisp_Process *p; | |
5506 | ||
5507 | proc = get_process (process); | |
5508 | p = XPROCESS (proc); | |
5509 | ||
5510 | if (!EQ (p->childp, Qt)) | |
5511 | error ("Process %s is not a subprocess", | |
d5db4077 | 5512 | SDATA (p->name)); |
b81ea5ef RS |
5513 | if (XINT (p->infd) < 0) |
5514 | error ("Process %s is not active", | |
d5db4077 | 5515 | SDATA (p->name)); |
b81ea5ef | 5516 | |
16782258 | 5517 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef RS |
5518 | |
5519 | if (gid == XFASTINT (p->pid)) | |
5520 | return Qnil; | |
5521 | return Qt; | |
5522 | } | |
5523 | \f | |
d0d6b7c5 | 5524 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5525 | If CURRENT_GROUP is t, that means send to the process group |
5526 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5527 | This is used for various commands in shell mode. |
b81ea5ef RS |
5528 | If CURRENT_GROUP is lambda, that means send to the process group |
5529 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5530 | ||
d0d6b7c5 | 5531 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5532 | right away. |
5533 | ||
5534 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5535 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5536 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5537 | |
f9738840 | 5538 | static void |
d0d6b7c5 JB |
5539 | process_send_signal (process, signo, current_group, nomsg) |
5540 | Lisp_Object process; | |
5541 | int signo; | |
5542 | Lisp_Object current_group; | |
5543 | int nomsg; | |
5544 | { | |
5545 | Lisp_Object proc; | |
5546 | register struct Lisp_Process *p; | |
5547 | int gid; | |
5548 | int no_pgrp = 0; | |
5549 | ||
5550 | proc = get_process (process); | |
5551 | p = XPROCESS (proc); | |
5552 | ||
5553 | if (!EQ (p->childp, Qt)) | |
5554 | error ("Process %s is not a subprocess", | |
d5db4077 | 5555 | SDATA (p->name)); |
a9f2c884 | 5556 | if (XINT (p->infd) < 0) |
d0d6b7c5 | 5557 | error ("Process %s is not active", |
d5db4077 | 5558 | SDATA (p->name)); |
d0d6b7c5 JB |
5559 | |
5560 | if (NILP (p->pty_flag)) | |
5561 | current_group = Qnil; | |
5562 | ||
d0d6b7c5 | 5563 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5564 | if (NILP (current_group)) |
5565 | /* Send the signal to the shell's process group. */ | |
5566 | gid = XFASTINT (p->pid); | |
5567 | else | |
d0d6b7c5 | 5568 | { |
b0310da4 | 5569 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5570 | /* If possible, send signals to the entire pgrp |
5571 | by sending an input character to it. */ | |
b0310da4 | 5572 | |
6be429b1 JB |
5573 | /* TERMIOS is the latest and bestest, and seems most likely to |
5574 | work. If the system has it, use it. */ | |
5575 | #ifdef HAVE_TERMIOS | |
5576 | struct termios t; | |
7f916a36 RS |
5577 | cc_t *sig_char = NULL; |
5578 | ||
5579 | tcgetattr (XINT (p->infd), &t); | |
6be429b1 JB |
5580 | |
5581 | switch (signo) | |
5582 | { | |
5583 | case SIGINT: | |
7f916a36 RS |
5584 | sig_char = &t.c_cc[VINTR]; |
5585 | break; | |
6be429b1 JB |
5586 | |
5587 | case SIGQUIT: | |
7f916a36 RS |
5588 | sig_char = &t.c_cc[VQUIT]; |
5589 | break; | |
6be429b1 JB |
5590 | |
5591 | case SIGTSTP: | |
d0adf46f | 5592 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5593 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5594 | #else |
7f916a36 | 5595 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5596 | #endif |
7f916a36 | 5597 | break; |
6be429b1 JB |
5598 | } |
5599 | ||
ca4313d5 | 5600 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5601 | { |
5602 | send_process (proc, sig_char, 1, Qnil); | |
5603 | return; | |
5604 | } | |
5605 | /* If we can't send the signal with a character, | |
5606 | fall through and send it another way. */ | |
6be429b1 JB |
5607 | #else /* ! HAVE_TERMIOS */ |
5608 | ||
b0310da4 JB |
5609 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5610 | current control characters. */ | |
d0d6b7c5 | 5611 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5612 | |
d0d6b7c5 JB |
5613 | struct tchars c; |
5614 | struct ltchars lc; | |
5615 | ||
5616 | switch (signo) | |
5617 | { | |
5618 | case SIGINT: | |
a9f2c884 | 5619 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5620 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 5621 | return; |
d0d6b7c5 | 5622 | case SIGQUIT: |
a9f2c884 | 5623 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5624 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 5625 | return; |
0ad77c54 | 5626 | #ifdef SIGTSTP |
d0d6b7c5 | 5627 | case SIGTSTP: |
a9f2c884 | 5628 | ioctl (XINT (p->infd), TIOCGLTC, &lc); |
4556b700 | 5629 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 5630 | return; |
b0310da4 | 5631 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5632 | } |
b0310da4 JB |
5633 | |
5634 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
5635 | ||
5636 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
5637 | characters. */ | |
5638 | #ifdef TCGETA | |
d0d6b7c5 JB |
5639 | struct termio t; |
5640 | switch (signo) | |
5641 | { | |
5642 | case SIGINT: | |
a9f2c884 | 5643 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5644 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 5645 | return; |
d0d6b7c5 | 5646 | case SIGQUIT: |
a9f2c884 | 5647 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5648 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 5649 | return; |
7d79e3b4 | 5650 | #ifdef SIGTSTP |
d0d6b7c5 | 5651 | case SIGTSTP: |
a9f2c884 | 5652 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5653 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 5654 | return; |
b0310da4 | 5655 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5656 | } |
b0310da4 JB |
5657 | #else /* ! defined (TCGETA) */ |
5658 | Your configuration files are messed up. | |
5659 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
5660 | you'd better be using one of the alternatives above! */ | |
5661 | #endif /* ! defined (TCGETA) */ | |
5662 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
f1c206fc | 5663 | /* In this case, the code above should alway returns. */ |
20505336 | 5664 | abort (); |
f1c206fc RS |
5665 | #endif /* ! defined HAVE_TERMIOS */ |
5666 | ||
5667 | /* The code above may fall through if it can't | |
5668 | handle the signal. */ | |
20505336 | 5669 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5670 | |
177c0ea7 | 5671 | #ifdef TIOCGPGRP |
2af70a0c | 5672 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5673 | Otherwise, use the pty to get the pgrp. |
5674 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5675 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5676 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5677 | His patch indicates that if TIOCGPGRP returns an error, then |
5678 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5679 | |
16782258 | 5680 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5681 | |
16782258 JD |
5682 | if (gid == -1) |
5683 | /* If we can't get the information, assume | |
5684 | the shell owns the tty. */ | |
5685 | gid = XFASTINT (p->pid); | |
2af70a0c RS |
5686 | |
5687 | /* It is not clear whether anything really can set GID to -1. | |
5688 | Perhaps on some system one of those ioctls can or could do so. | |
5689 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5690 | if (gid == -1) |
5691 | no_pgrp = 1; | |
b0310da4 | 5692 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5693 | /* Can't select pgrps on this system, so we know that |
5694 | the child itself heads the pgrp. */ | |
2af70a0c | 5695 | gid = XFASTINT (p->pid); |
301c3fe4 | 5696 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5697 | |
5698 | /* If current_group is lambda, and the shell owns the terminal, | |
5699 | don't send any signal. */ | |
2af70a0c | 5700 | if (EQ (current_group, Qlambda) && gid == XFASTINT (p->pid)) |
b81ea5ef | 5701 | return; |
d0d6b7c5 | 5702 | } |
d0d6b7c5 JB |
5703 | |
5704 | switch (signo) | |
5705 | { | |
5706 | #ifdef SIGCONT | |
5707 | case SIGCONT: | |
5708 | p->raw_status_low = Qnil; | |
5709 | p->raw_status_high = Qnil; | |
5710 | p->status = Qrun; | |
5711 | XSETINT (p->tick, ++process_tick); | |
5712 | if (!nomsg) | |
5713 | status_notify (); | |
5714 | break; | |
301c3fe4 | 5715 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 JB |
5716 | case SIGINT: |
5717 | #ifdef VMS | |
4556b700 | 5718 | send_process (proc, "\003", 1, Qnil); /* ^C */ |
d0d6b7c5 JB |
5719 | goto whoosh; |
5720 | #endif | |
5721 | case SIGQUIT: | |
5722 | #ifdef VMS | |
4556b700 | 5723 | send_process (proc, "\031", 1, Qnil); /* ^Y */ |
d0d6b7c5 JB |
5724 | goto whoosh; |
5725 | #endif | |
5726 | case SIGKILL: | |
5727 | #ifdef VMS | |
5728 | sys$forcex (&(XFASTINT (p->pid)), 0, 1); | |
5729 | whoosh: | |
5730 | #endif | |
a9f2c884 | 5731 | flush_pending_output (XINT (p->infd)); |
d0d6b7c5 JB |
5732 | break; |
5733 | } | |
5734 | ||
5735 | /* If we don't have process groups, send the signal to the immediate | |
5736 | subprocess. That isn't really right, but it's better than any | |
5737 | obvious alternative. */ | |
5738 | if (no_pgrp) | |
5739 | { | |
5740 | kill (XFASTINT (p->pid), signo); | |
5741 | return; | |
5742 | } | |
5743 | ||
5744 | /* gid may be a pid, or minus a pgrp's number */ | |
5745 | #ifdef TIOCSIGSEND | |
5746 | if (!NILP (current_group)) | |
16782258 JD |
5747 | { |
5748 | if (ioctl (XINT (p->infd), TIOCSIGSEND, signo) == -1) | |
5749 | EMACS_KILLPG (gid, signo); | |
5750 | } | |
d0d6b7c5 JB |
5751 | else |
5752 | { | |
5753 | gid = - XFASTINT (p->pid); | |
5754 | kill (gid, signo); | |
5755 | } | |
301c3fe4 | 5756 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5757 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5758 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5759 | } |
5760 | ||
5761 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5762 | doc: /* Interrupt process PROCESS. |
5763 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5764 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5765 | Second arg CURRENT-GROUP non-nil means send signal to |
5766 | the current process-group of the process's controlling terminal | |
5767 | rather than to the process's own process group. | |
5768 | If the process is a shell, this means interrupt current subjob | |
5769 | rather than the shell. | |
5770 | ||
5771 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5772 | don't send the signal. */) | |
5773 | (process, current_group) | |
d0d6b7c5 JB |
5774 | Lisp_Object process, current_group; |
5775 | { | |
5776 | process_send_signal (process, SIGINT, current_group, 0); | |
5777 | return process; | |
5778 | } | |
5779 | ||
5780 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5781 | doc: /* Kill process PROCESS. May be process or name of one. |
5782 | See function `interrupt-process' for more details on usage. */) | |
5783 | (process, current_group) | |
d0d6b7c5 JB |
5784 | Lisp_Object process, current_group; |
5785 | { | |
5786 | process_send_signal (process, SIGKILL, current_group, 0); | |
5787 | return process; | |
5788 | } | |
5789 | ||
5790 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5791 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5792 | See function `interrupt-process' for more details on usage. */) | |
5793 | (process, current_group) | |
d0d6b7c5 JB |
5794 | Lisp_Object process, current_group; |
5795 | { | |
5796 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5797 | return process; | |
5798 | } | |
5799 | ||
5800 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5801 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5802 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5803 | If PROCESS is a network process, inhibit handling of incoming traffic. */) |
fdb82f93 | 5804 | (process, current_group) |
d0d6b7c5 JB |
5805 | Lisp_Object process, current_group; |
5806 | { | |
e690ca94 KS |
5807 | #ifdef HAVE_SOCKETS |
5808 | if (PROCESSP (process) && NETCONN_P (process)) | |
5809 | { | |
5810 | struct Lisp_Process *p; | |
177c0ea7 | 5811 | |
e690ca94 KS |
5812 | p = XPROCESS (process); |
5813 | if (NILP (p->command) | |
5814 | && XINT (p->infd) >= 0) | |
5815 | { | |
5816 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
5817 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
5818 | } | |
5819 | p->command = Qt; | |
5820 | return process; | |
5821 | } | |
5822 | #endif | |
d0d6b7c5 JB |
5823 | #ifndef SIGTSTP |
5824 | error ("no SIGTSTP support"); | |
5825 | #else | |
5826 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5827 | #endif | |
5828 | return process; | |
5829 | } | |
5830 | ||
5831 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5832 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5833 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5834 | If PROCESS is a network process, resume handling of incoming traffic. */) |
fdb82f93 | 5835 | (process, current_group) |
d0d6b7c5 JB |
5836 | Lisp_Object process, current_group; |
5837 | { | |
e690ca94 KS |
5838 | #ifdef HAVE_SOCKETS |
5839 | if (PROCESSP (process) && NETCONN_P (process)) | |
5840 | { | |
5841 | struct Lisp_Process *p; | |
5842 | ||
5843 | p = XPROCESS (process); | |
5844 | if (EQ (p->command, Qt) | |
5845 | && XINT (p->infd) >= 0 | |
5846 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) | |
5847 | { | |
5848 | FD_SET (XINT (p->infd), &input_wait_mask); | |
5849 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
5850 | } | |
5851 | p->command = Qnil; | |
5852 | return process; | |
5853 | } | |
5854 | #endif | |
d0d6b7c5 JB |
5855 | #ifdef SIGCONT |
5856 | process_send_signal (process, SIGCONT, current_group, 0); | |
5857 | #else | |
5858 | error ("no SIGCONT support"); | |
5859 | #endif | |
5860 | return process; | |
5861 | } | |
5862 | ||
5863 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
5864 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
5865 | doc: /* Send PROCESS the signal with code SIGCODE. | |
5866 | PROCESS may also be an integer specifying the process id of the | |
5867 | process to signal; in this case, the process need not be a child of | |
5868 | this Emacs. | |
fdb82f93 | 5869 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
5870 | (process, sigcode) |
5871 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 5872 | { |
cdd5ea86 KS |
5873 | Lisp_Object pid; |
5874 | ||
5875 | if (INTEGERP (process)) | |
5876 | { | |
5877 | pid = process; | |
5878 | goto got_it; | |
5879 | } | |
5880 | ||
5881 | if (STRINGP (process)) | |
5882 | { | |
5883 | Lisp_Object tem; | |
5884 | if (tem = Fget_process (process), NILP (tem)) | |
5885 | { | |
5886 | pid = Fstring_to_number (process, make_number (10)); | |
5887 | if (XINT (pid) != 0) | |
5888 | goto got_it; | |
5889 | } | |
5890 | process = tem; | |
5891 | } | |
5892 | else | |
5893 | process = get_process (process); | |
177c0ea7 | 5894 | |
cdd5ea86 KS |
5895 | if (NILP (process)) |
5896 | return process; | |
5897 | ||
5898 | CHECK_PROCESS (process); | |
5899 | pid = XPROCESS (process)->pid; | |
5900 | if (!INTEGERP (pid) || XINT (pid) <= 0) | |
5901 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); | |
5902 | ||
5903 | got_it: | |
4766242d RS |
5904 | |
5905 | #define handle_signal(NAME, VALUE) \ | |
5906 | else if (!strcmp (name, NAME)) \ | |
5907 | XSETINT (sigcode, VALUE) | |
5908 | ||
5909 | if (INTEGERP (sigcode)) | |
5910 | ; | |
5911 | else | |
5912 | { | |
5913 | unsigned char *name; | |
5914 | ||
b7826503 | 5915 | CHECK_SYMBOL (sigcode); |
d5db4077 | 5916 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d RS |
5917 | |
5918 | if (0) | |
5919 | ; | |
5920 | #ifdef SIGHUP | |
5921 | handle_signal ("SIGHUP", SIGHUP); | |
5922 | #endif | |
5923 | #ifdef SIGINT | |
5924 | handle_signal ("SIGINT", SIGINT); | |
5925 | #endif | |
5926 | #ifdef SIGQUIT | |
5927 | handle_signal ("SIGQUIT", SIGQUIT); | |
5928 | #endif | |
5929 | #ifdef SIGILL | |
5930 | handle_signal ("SIGILL", SIGILL); | |
5931 | #endif | |
5932 | #ifdef SIGABRT | |
5933 | handle_signal ("SIGABRT", SIGABRT); | |
5934 | #endif | |
5935 | #ifdef SIGEMT | |
5936 | handle_signal ("SIGEMT", SIGEMT); | |
5937 | #endif | |
5938 | #ifdef SIGKILL | |
5939 | handle_signal ("SIGKILL", SIGKILL); | |
5940 | #endif | |
5941 | #ifdef SIGFPE | |
5942 | handle_signal ("SIGFPE", SIGFPE); | |
5943 | #endif | |
5944 | #ifdef SIGBUS | |
5945 | handle_signal ("SIGBUS", SIGBUS); | |
5946 | #endif | |
5947 | #ifdef SIGSEGV | |
5948 | handle_signal ("SIGSEGV", SIGSEGV); | |
5949 | #endif | |
5950 | #ifdef SIGSYS | |
5951 | handle_signal ("SIGSYS", SIGSYS); | |
5952 | #endif | |
5953 | #ifdef SIGPIPE | |
5954 | handle_signal ("SIGPIPE", SIGPIPE); | |
5955 | #endif | |
5956 | #ifdef SIGALRM | |
5957 | handle_signal ("SIGALRM", SIGALRM); | |
5958 | #endif | |
5959 | #ifdef SIGTERM | |
5960 | handle_signal ("SIGTERM", SIGTERM); | |
5961 | #endif | |
5962 | #ifdef SIGURG | |
5963 | handle_signal ("SIGURG", SIGURG); | |
5964 | #endif | |
5965 | #ifdef SIGSTOP | |
5966 | handle_signal ("SIGSTOP", SIGSTOP); | |
5967 | #endif | |
5968 | #ifdef SIGTSTP | |
5969 | handle_signal ("SIGTSTP", SIGTSTP); | |
5970 | #endif | |
5971 | #ifdef SIGCONT | |
5972 | handle_signal ("SIGCONT", SIGCONT); | |
5973 | #endif | |
5974 | #ifdef SIGCHLD | |
5975 | handle_signal ("SIGCHLD", SIGCHLD); | |
5976 | #endif | |
5977 | #ifdef SIGTTIN | |
5978 | handle_signal ("SIGTTIN", SIGTTIN); | |
5979 | #endif | |
5980 | #ifdef SIGTTOU | |
5981 | handle_signal ("SIGTTOU", SIGTTOU); | |
5982 | #endif | |
5983 | #ifdef SIGIO | |
5984 | handle_signal ("SIGIO", SIGIO); | |
5985 | #endif | |
5986 | #ifdef SIGXCPU | |
5987 | handle_signal ("SIGXCPU", SIGXCPU); | |
5988 | #endif | |
5989 | #ifdef SIGXFSZ | |
5990 | handle_signal ("SIGXFSZ", SIGXFSZ); | |
5991 | #endif | |
5992 | #ifdef SIGVTALRM | |
5993 | handle_signal ("SIGVTALRM", SIGVTALRM); | |
5994 | #endif | |
5995 | #ifdef SIGPROF | |
5996 | handle_signal ("SIGPROF", SIGPROF); | |
5997 | #endif | |
5998 | #ifdef SIGWINCH | |
5999 | handle_signal ("SIGWINCH", SIGWINCH); | |
6000 | #endif | |
6001 | #ifdef SIGINFO | |
6002 | handle_signal ("SIGINFO", SIGINFO); | |
6003 | #endif | |
6004 | #ifdef SIGUSR1 | |
6005 | handle_signal ("SIGUSR1", SIGUSR1); | |
6006 | #endif | |
6007 | #ifdef SIGUSR2 | |
6008 | handle_signal ("SIGUSR2", SIGUSR2); | |
6009 | #endif | |
6010 | else | |
9fa195a2 | 6011 | error ("Undefined signal name %s", name); |
4766242d RS |
6012 | } |
6013 | ||
6014 | #undef handle_signal | |
6015 | ||
4766242d | 6016 | return make_number (kill (XINT (pid), XINT (sigcode))); |
d0d6b7c5 JB |
6017 | } |
6018 | ||
6019 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6020 | doc: /* Make PROCESS see end-of-file in its input. |
6021 | EOF comes after any text already sent to it. | |
6022 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6023 | nil, indicating the current buffer's process. | |
6024 | If PROCESS is a network connection, or is a process communicating | |
6025 | through a pipe (as opposed to a pty), then you cannot send any more | |
6026 | text to PROCESS after you call this function. */) | |
6027 | (process) | |
d0d6b7c5 JB |
6028 | Lisp_Object process; |
6029 | { | |
6030 | Lisp_Object proc; | |
de7fbd09 | 6031 | struct coding_system *coding; |
d0d6b7c5 | 6032 | |
e690ca94 KS |
6033 | if (DATAGRAM_CONN_P (process)) |
6034 | return process; | |
6035 | ||
d0d6b7c5 | 6036 | proc = get_process (process); |
de7fbd09 | 6037 | coding = proc_encode_coding_system[XINT (XPROCESS (proc)->outfd)]; |
577d03d5 RS |
6038 | |
6039 | /* Make sure the process is really alive. */ | |
6040 | if (! NILP (XPROCESS (proc)->raw_status_low)) | |
6041 | update_status (XPROCESS (proc)); | |
6042 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6043 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6044 | |
de7fbd09 KH |
6045 | if (CODING_REQUIRE_FLUSHING (coding)) |
6046 | { | |
6047 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6048 | send_process (proc, "", 0, Qnil); | |
6049 | } | |
6050 | ||
d0d6b7c5 | 6051 | #ifdef VMS |
4556b700 | 6052 | send_process (proc, "\032", 1, Qnil); /* ^z */ |
d0d6b7c5 JB |
6053 | #else |
6054 | if (!NILP (XPROCESS (proc)->pty_flag)) | |
4556b700 | 6055 | send_process (proc, "\004", 1, Qnil); |
d0d6b7c5 JB |
6056 | else |
6057 | { | |
4525f571 RS |
6058 | int old_outfd, new_outfd; |
6059 | ||
93853f3d | 6060 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6061 | /* If this is a network connection, or socketpair is used |
6062 | for communication with the subprocess, call shutdown to cause EOF. | |
6063 | (In some old system, shutdown to socketpair doesn't work. | |
6064 | Then we just can't win.) */ | |
6065 | if (NILP (XPROCESS (proc)->pid) | |
6066 | || XINT (XPROCESS (proc)->outfd) == XINT (XPROCESS (proc)->infd)) | |
6067 | shutdown (XINT (XPROCESS (proc)->outfd), 1); | |
6068 | /* In case of socketpair, outfd == infd, so don't close it. */ | |
6069 | if (XINT (XPROCESS (proc)->outfd) != XINT (XPROCESS (proc)->infd)) | |
68c45bf0 | 6070 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6071 | #else /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6072 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6073 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6074 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
4525f571 RS |
6075 | old_outfd = XINT (XPROCESS (proc)->outfd); |
6076 | ||
6077 | if (!proc_encode_coding_system[new_outfd]) | |
6078 | proc_encode_coding_system[new_outfd] | |
6079 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6080 | bcopy (proc_encode_coding_system[old_outfd], | |
6081 | proc_encode_coding_system[new_outfd], | |
6082 | sizeof (struct coding_system)); | |
6083 | bzero (proc_encode_coding_system[old_outfd], | |
6084 | sizeof (struct coding_system)); | |
6085 | ||
6086 | XSETINT (XPROCESS (proc)->outfd, new_outfd); | |
d0d6b7c5 JB |
6087 | } |
6088 | #endif /* VMS */ | |
d0d6b7c5 JB |
6089 | return process; |
6090 | } | |
6091 | ||
6092 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 6093 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 6094 | |
6b53bb85 | 6095 | void |
d0d6b7c5 JB |
6096 | kill_buffer_processes (buffer) |
6097 | Lisp_Object buffer; | |
6098 | { | |
6099 | Lisp_Object tail, proc; | |
6100 | ||
70949dac | 6101 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6102 | { |
70949dac | 6103 | proc = XCDR (XCAR (tail)); |
b5b502d6 | 6104 | if (GC_PROCESSP (proc) |
d0d6b7c5 JB |
6105 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
6106 | { | |
6107 | if (NETCONN_P (proc)) | |
e1ab4959 | 6108 | Fdelete_process (proc); |
a9f2c884 | 6109 | else if (XINT (XPROCESS (proc)->infd) >= 0) |
d0d6b7c5 JB |
6110 | process_send_signal (proc, SIGHUP, Qnil, 1); |
6111 | } | |
6112 | } | |
6113 | } | |
6114 | \f | |
3fed8ad5 GM |
6115 | /* On receipt of a signal that a child status has changed, loop asking |
6116 | about children with changed statuses until the system says there | |
6117 | are no more. | |
177c0ea7 | 6118 | |
3fed8ad5 GM |
6119 | All we do is change the status; we do not run sentinels or print |
6120 | notifications. That is saved for the next time keyboard input is | |
6121 | done, in order to avoid timing errors. | |
6122 | ||
6123 | ** WARNING: this can be called during garbage collection. | |
6124 | Therefore, it must not be fooled by the presence of mark bits in | |
6125 | Lisp objects. | |
6126 | ||
6127 | ** USG WARNING: Although it is not obvious from the documentation | |
6128 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6129 | signal() before executing at least one wait(), otherwise the | |
6130 | handler will be called again, resulting in an infinite loop. The | |
6131 | relevant portion of the documentation reads "SIGCLD signals will be | |
6132 | queued and the signal-catching function will be continually | |
6133 | reentered until the queue is empty". Invoking signal() causes the | |
6134 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
ce38070a JD |
6135 | Inc. |
6136 | ||
6137 | ** Malloc WARNING: This should never call malloc either directly or | |
6138 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 JB |
6139 | |
6140 | SIGTYPE | |
6141 | sigchld_handler (signo) | |
6142 | int signo; | |
6143 | { | |
6144 | int old_errno = errno; | |
6145 | Lisp_Object proc; | |
6146 | register struct Lisp_Process *p; | |
6be429b1 | 6147 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 | 6148 | |
333f1b6f JD |
6149 | SIGNAL_THREAD_CHECK (signo); |
6150 | ||
d0d6b7c5 JB |
6151 | #ifdef BSD4_1 |
6152 | extern int sigheld; | |
6153 | sigheld |= sigbit (SIGCHLD); | |
6154 | #endif | |
6155 | ||
6156 | while (1) | |
6157 | { | |
6158 | register int pid; | |
6159 | WAITTYPE w; | |
6160 | Lisp_Object tail; | |
6161 | ||
6162 | #ifdef WNOHANG | |
6163 | #ifndef WUNTRACED | |
6164 | #define WUNTRACED 0 | |
6165 | #endif /* no WUNTRACED */ | |
6166 | /* Keep trying to get a status until we get a definitive result. */ | |
177c0ea7 | 6167 | do |
d0d6b7c5 JB |
6168 | { |
6169 | errno = 0; | |
6170 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
6171 | } | |
3fed8ad5 | 6172 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6173 | |
6174 | if (pid <= 0) | |
6175 | { | |
3fed8ad5 GM |
6176 | /* PID == 0 means no processes found, PID == -1 means a real |
6177 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6178 | |
6179 | /* USG systems forget handlers when they are used; | |
6180 | must reestablish each time */ | |
3c0ee47b | 6181 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6182 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
6183 | #endif | |
6184 | #ifdef BSD4_1 | |
6185 | sigheld &= ~sigbit (SIGCHLD); | |
6186 | sigrelse (SIGCHLD); | |
6187 | #endif | |
6188 | errno = old_errno; | |
6189 | return; | |
6190 | } | |
6191 | #else | |
6192 | pid = wait (&w); | |
6193 | #endif /* no WNOHANG */ | |
6194 | ||
6195 | /* Find the process that signaled us, and record its status. */ | |
6196 | ||
6197 | p = 0; | |
3fed8ad5 | 6198 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6199 | { |
70949dac | 6200 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6201 | p = XPROCESS (proc); |
3fed8ad5 | 6202 | if (GC_EQ (p->childp, Qt) && XINT (p->pid) == pid) |
d0d6b7c5 JB |
6203 | break; |
6204 | p = 0; | |
6205 | } | |
6206 | ||
6207 | /* Look for an asynchronous process whose pid hasn't been filled | |
6208 | in yet. */ | |
6209 | if (p == 0) | |
3fed8ad5 | 6210 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6211 | { |
70949dac | 6212 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6213 | p = XPROCESS (proc); |
3fed8ad5 | 6214 | if (GC_INTEGERP (p->pid) && XINT (p->pid) == -1) |
d0d6b7c5 JB |
6215 | break; |
6216 | p = 0; | |
6217 | } | |
177c0ea7 | 6218 | |
d0d6b7c5 JB |
6219 | /* Change the status of the process that was found. */ |
6220 | if (p != 0) | |
6221 | { | |
6222 | union { int i; WAITTYPE wt; } u; | |
e98d950b | 6223 | int clear_desc_flag = 0; |
177c0ea7 | 6224 | |
d0d6b7c5 JB |
6225 | XSETINT (p->tick, ++process_tick); |
6226 | u.wt = w; | |
5fc0154c RS |
6227 | XSETINT (p->raw_status_low, u.i & 0xffff); |
6228 | XSETINT (p->raw_status_high, u.i >> 16); | |
177c0ea7 | 6229 | |
d0d6b7c5 | 6230 | /* If process has terminated, stop waiting for its output. */ |
e98d950b RS |
6231 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
6232 | && XINT (p->infd) >= 0) | |
6233 | clear_desc_flag = 1; | |
6234 | ||
6235 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6236 | if (clear_desc_flag) | |
6237 | { | |
6238 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
6239 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
6240 | } | |
6be429b1 | 6241 | |
214d6069 | 6242 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6243 | look around. */ |
6244 | if (input_available_clear_time) | |
6245 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6246 | } |
6247 | ||
6248 | /* There was no asynchronous process found for that id. Check | |
6249 | if we have a synchronous process. */ | |
6250 | else | |
6251 | { | |
6252 | synch_process_alive = 0; | |
6253 | ||
6254 | /* Report the status of the synchronous process. */ | |
6255 | if (WIFEXITED (w)) | |
6256 | synch_process_retcode = WRETCODE (w); | |
6257 | else if (WIFSIGNALED (w)) | |
c22aeff8 | 6258 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6259 | |
214d6069 | 6260 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6261 | look around. */ |
6262 | if (input_available_clear_time) | |
6263 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6264 | } |
6265 | ||
6266 | /* On some systems, we must return right away. | |
6267 | If any more processes want to signal us, we will | |
6268 | get another signal. | |
6269 | Otherwise (on systems that have WNOHANG), loop around | |
6270 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6271 | #if (defined WINDOWSNT \ |
8a2a6032 | 6272 | || (defined USG && !defined GNU_LINUX \ |
4e6277d8 | 6273 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6274 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6275 | signal (signo, sigchld_handler); |
6276 | #endif | |
6277 | errno = old_errno; | |
6278 | return; | |
6279 | #endif /* USG, but not HPUX with WNOHANG */ | |
6280 | } | |
6281 | } | |
6282 | \f | |
6283 | ||
6284 | static Lisp_Object | |
6285 | exec_sentinel_unwind (data) | |
6286 | Lisp_Object data; | |
6287 | { | |
70949dac | 6288 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6289 | return Qnil; |
6290 | } | |
6291 | ||
3b9a3dfa RS |
6292 | static Lisp_Object |
6293 | exec_sentinel_error_handler (error) | |
6294 | Lisp_Object error; | |
6295 | { | |
6296 | cmd_error_internal (error, "error in process sentinel: "); | |
6297 | Vinhibit_quit = Qt; | |
6298 | update_echo_area (); | |
833ba342 | 6299 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6300 | return Qt; |
3b9a3dfa RS |
6301 | } |
6302 | ||
d0d6b7c5 JB |
6303 | static void |
6304 | exec_sentinel (proc, reason) | |
6305 | Lisp_Object proc, reason; | |
6306 | { | |
dfc21838 | 6307 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6308 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6309 | int count = SPECPDL_INDEX (); |
4da2f5be | 6310 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6311 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6312 | |
dfc21838 RS |
6313 | /* No need to gcpro these, because all we do with them later |
6314 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6315 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6316 | XSETBUFFER (obuffer, current_buffer); |
6317 | okeymap = current_buffer->keymap; | |
6318 | ||
d0d6b7c5 JB |
6319 | sentinel = p->sentinel; |
6320 | if (NILP (sentinel)) | |
6321 | return; | |
6322 | ||
6323 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6324 | assure that it gets restored no matter how the sentinel exits. */ | |
6325 | p->sentinel = Qnil; | |
6326 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6327 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6328 | specbind (Qinhibit_quit, Qt); | |
6545aada | 6329 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 6330 | |
4da2f5be RS |
6331 | /* In case we get recursively called, |
6332 | and we already saved the match data nonrecursively, | |
6333 | save the same match data in safely recursive fashion. */ | |
6334 | if (outer_running_asynch_code) | |
6335 | { | |
6336 | Lisp_Object tem; | |
dd130227 | 6337 | tem = Fmatch_data (Qnil, Qnil); |
4da2f5be | 6338 | restore_match_data (); |
8f1ecd05 RS |
6339 | record_unwind_protect (Fset_match_data, Fmatch_data (Qnil, Qnil)); |
6340 | Fset_match_data (tem); | |
4da2f5be RS |
6341 | } |
6342 | ||
6343 | /* For speed, if a search happens within this code, | |
6344 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6345 | running_asynch_code = 1; |
4da2f5be | 6346 | |
3b9a3dfa RS |
6347 | internal_condition_case_1 (read_process_output_call, |
6348 | Fcons (sentinel, | |
6349 | Fcons (proc, Fcons (reason, Qnil))), | |
6350 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6351 | exec_sentinel_error_handler); | |
4da2f5be RS |
6352 | |
6353 | /* If we saved the match data nonrecursively, restore it now. */ | |
7074fde6 | 6354 | restore_match_data (); |
4da2f5be | 6355 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6356 | |
6357 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6358 | |
6359 | /* Restore waiting_for_user_input_p as it was | |
6360 | when we were called, in case the filter clobbered it. */ | |
6361 | waiting_for_user_input_p = waiting; | |
6362 | ||
7973cfa8 | 6363 | #if 0 |
dfc21838 RS |
6364 | if (! EQ (Fcurrent_buffer (), obuffer) |
6365 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6366 | #endif |
927e08be RS |
6367 | /* But do it only if the caller is actually going to read events. |
6368 | Otherwise there's no need to make him wake up, and it could | |
6369 | cause trouble (for example it would make Fsit_for return). */ | |
6370 | if (waiting_for_user_input_p == -1) | |
6371 | record_asynch_buffer_change (); | |
8fb3cf64 | 6372 | |
2ea6d561 | 6373 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6374 | } |
6375 | ||
6376 | /* Report all recent events of a change in process status | |
6377 | (either run the sentinel or output a message). | |
b50fe468 RS |
6378 | This is usually done while Emacs is waiting for keyboard input |
6379 | but can be done at other times. */ | |
d0d6b7c5 | 6380 | |
6b53bb85 | 6381 | void |
d0d6b7c5 JB |
6382 | status_notify () |
6383 | { | |
6384 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6385 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6386 | struct gcpro gcpro1, gcpro2; |
6387 | ||
2e4149a8 KH |
6388 | tail = Qnil; |
6389 | msg = Qnil; | |
d0d6b7c5 JB |
6390 | /* We need to gcpro tail; if read_process_output calls a filter |
6391 | which deletes a process and removes the cons to which tail points | |
6392 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6393 | reference. */ | |
6394 | GCPRO2 (tail, msg); | |
6395 | ||
30623085 RS |
6396 | /* Set this now, so that if new processes are created by sentinels |
6397 | that we run, we get called again to handle their status changes. */ | |
6398 | update_tick = process_tick; | |
6399 | ||
6400 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
d0d6b7c5 | 6401 | { |
30623085 RS |
6402 | Lisp_Object symbol; |
6403 | register struct Lisp_Process *p; | |
6404 | ||
6405 | proc = Fcdr (Fcar (tail)); | |
6406 | p = XPROCESS (proc); | |
6407 | ||
6408 | if (XINT (p->tick) != XINT (p->update_tick)) | |
d0d6b7c5 | 6409 | { |
30623085 | 6410 | XSETINT (p->update_tick, XINT (p->tick)); |
d0d6b7c5 | 6411 | |
30623085 | 6412 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6413 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6414 | && ! EQ (p->status, Qconnect) |
e690ca94 KS |
6415 | && ! EQ (p->status, Qlisten) |
6416 | && ! EQ (p->command, Qt) /* Network process not stopped. */ | |
4da2f5be RS |
6417 | && XINT (p->infd) >= 0 |
6418 | && read_process_output (proc, XINT (p->infd)) > 0); | |
d0d6b7c5 | 6419 | |
30623085 | 6420 | buffer = p->buffer; |
d0d6b7c5 | 6421 | |
30623085 RS |
6422 | /* Get the text to use for the message. */ |
6423 | if (!NILP (p->raw_status_low)) | |
6424 | update_status (p); | |
116c423c | 6425 | msg = status_message (p); |
d0d6b7c5 | 6426 | |
30623085 RS |
6427 | /* If process is terminated, deactivate it or delete it. */ |
6428 | symbol = p->status; | |
6429 | if (CONSP (p->status)) | |
70949dac | 6430 | symbol = XCAR (p->status); |
d0d6b7c5 | 6431 | |
30623085 RS |
6432 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6433 | || EQ (symbol, Qclosed)) | |
6434 | { | |
6435 | if (delete_exited_processes) | |
6436 | remove_process (proc); | |
6437 | else | |
6438 | deactivate_process (proc); | |
6439 | } | |
d0d6b7c5 | 6440 | |
0ad61fe7 RS |
6441 | /* The actions above may have further incremented p->tick. |
6442 | So set p->update_tick again | |
6443 | so that an error in the sentinel will not cause | |
6444 | this code to be run again. */ | |
6445 | XSETINT (p->update_tick, XINT (p->tick)); | |
30623085 RS |
6446 | /* Now output the message suitably. */ |
6447 | if (!NILP (p->sentinel)) | |
6448 | exec_sentinel (proc, msg); | |
6449 | /* Don't bother with a message in the buffer | |
6450 | when a process becomes runnable. */ | |
6451 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6452 | { | |
6453 | Lisp_Object ro, tem; | |
6454 | struct buffer *old = current_buffer; | |
d8a2934e RS |
6455 | int opoint, opoint_byte; |
6456 | int before, before_byte; | |
2e4149a8 | 6457 | |
30623085 | 6458 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 6459 | |
30623085 RS |
6460 | /* Avoid error if buffer is deleted |
6461 | (probably that's why the process is dead, too) */ | |
6462 | if (NILP (XBUFFER (buffer)->name)) | |
6463 | continue; | |
6464 | Fset_buffer (buffer); | |
12ca5cdf | 6465 | |
6ec8bbd2 | 6466 | opoint = PT; |
d8a2934e | 6467 | opoint_byte = PT_BYTE; |
30623085 RS |
6468 | /* Insert new output into buffer |
6469 | at the current end-of-output marker, | |
6470 | thus preserving logical ordering of input and output. */ | |
6471 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6472 | Fgoto_char (p->mark); |
30623085 | 6473 | else |
d8a2934e | 6474 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6475 | |
6476 | before = PT; | |
d8a2934e | 6477 | before_byte = PT_BYTE; |
30623085 RS |
6478 | |
6479 | tem = current_buffer->read_only; | |
6480 | current_buffer->read_only = Qnil; | |
6481 | insert_string ("\nProcess "); | |
6482 | Finsert (1, &p->name); | |
6483 | insert_string (" "); | |
6484 | Finsert (1, &msg); | |
6485 | current_buffer->read_only = tem; | |
d8a2934e | 6486 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6487 | |
12ca5cdf | 6488 | if (opoint >= before) |
d8a2934e RS |
6489 | SET_PT_BOTH (opoint + (PT - before), |
6490 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6491 | else |
d8a2934e | 6492 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6493 | |
30623085 | 6494 | set_buffer_internal (old); |
d0d6b7c5 | 6495 | } |
30623085 RS |
6496 | } |
6497 | } /* end for */ | |
d0d6b7c5 JB |
6498 | |
6499 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
3007ebfb | 6500 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 6501 | |
d0d6b7c5 JB |
6502 | UNGCPRO; |
6503 | } | |
0fa1789e KH |
6504 | |
6505 | \f | |
6506 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6507 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6508 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6509 | DECODING will be used to decode subprocess output and ENCODING to | |
6510 | encode subprocess input. */) | |
f3d9532b JB |
6511 | (process, decoding, encoding) |
6512 | register Lisp_Object process, decoding, encoding; | |
0fa1789e KH |
6513 | { |
6514 | register struct Lisp_Process *p; | |
6515 | ||
f3d9532b JB |
6516 | CHECK_PROCESS (process); |
6517 | p = XPROCESS (process); | |
0fa1789e | 6518 | if (XINT (p->infd) < 0) |
d5db4077 | 6519 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
0fa1789e | 6520 | if (XINT (p->outfd) < 0) |
d5db4077 | 6521 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6522 | Fcheck_coding_system (decoding); |
6523 | Fcheck_coding_system (encoding); | |
0fa1789e | 6524 | |
03f04413 KH |
6525 | p->decode_coding_system = decoding; |
6526 | p->encode_coding_system = encoding; | |
f3d9532b | 6527 | setup_process_coding_systems (process); |
0fa1789e KH |
6528 | |
6529 | return Qnil; | |
6530 | } | |
6531 | ||
6532 | DEFUN ("process-coding-system", | |
6533 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6534 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
f3d9532b JB |
6535 | (process) |
6536 | register Lisp_Object process; | |
0fa1789e | 6537 | { |
f3d9532b JB |
6538 | CHECK_PROCESS (process); |
6539 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6540 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6541 | } |
03f04413 KH |
6542 | |
6543 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6544 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6545 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6546 | If FLAG is non-nil, the filter is given multibyte strings. | |
6547 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6548 | all character code conversion except for end-of-line conversion is |
6549 | suppressed. */) | |
f3d9532b JB |
6550 | (process, flag) |
6551 | Lisp_Object process, flag; | |
03f04413 KH |
6552 | { |
6553 | register struct Lisp_Process *p; | |
6554 | ||
f3d9532b JB |
6555 | CHECK_PROCESS (process); |
6556 | p = XPROCESS (process); | |
03f04413 | 6557 | p->filter_multibyte = flag; |
f3d9532b | 6558 | setup_process_coding_systems (process); |
03f04413 KH |
6559 | |
6560 | return Qnil; | |
6561 | } | |
6562 | ||
6563 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6564 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6565 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
f3d9532b JB |
6566 | (process) |
6567 | Lisp_Object process; | |
03f04413 KH |
6568 | { |
6569 | register struct Lisp_Process *p; | |
6570 | ||
f3d9532b JB |
6571 | CHECK_PROCESS (process); |
6572 | p = XPROCESS (process); | |
03f04413 KH |
6573 | |
6574 | return (NILP (p->filter_multibyte) ? Qnil : Qt); | |
6575 | } | |
6576 | ||
6577 | ||
d0d6b7c5 | 6578 | \f |
a69281ff RS |
6579 | /* The first time this is called, assume keyboard input comes from DESC |
6580 | instead of from where we used to expect it. | |
6581 | Subsequent calls mean assume input keyboard can come from DESC | |
6582 | in addition to other places. */ | |
6583 | ||
6584 | static int add_keyboard_wait_descriptor_called_flag; | |
6585 | ||
6586 | void | |
6587 | add_keyboard_wait_descriptor (desc) | |
6588 | int desc; | |
6589 | { | |
6590 | if (! add_keyboard_wait_descriptor_called_flag) | |
6591 | FD_CLR (0, &input_wait_mask); | |
6592 | add_keyboard_wait_descriptor_called_flag = 1; | |
6593 | FD_SET (desc, &input_wait_mask); | |
b5dc1c83 | 6594 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
6595 | if (desc > max_keyboard_desc) |
6596 | max_keyboard_desc = desc; | |
6597 | } | |
6598 | ||
6599 | /* From now on, do not expect DESC to give keyboard input. */ | |
6600 | ||
6601 | void | |
6602 | delete_keyboard_wait_descriptor (desc) | |
6603 | int desc; | |
6604 | { | |
6605 | int fd; | |
6606 | int lim = max_keyboard_desc; | |
6607 | ||
6608 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 6609 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
6610 | |
6611 | if (desc == max_keyboard_desc) | |
6612 | for (fd = 0; fd < lim; fd++) | |
6613 | if (FD_ISSET (fd, &input_wait_mask) | |
6614 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6615 | max_keyboard_desc = fd; | |
6616 | } | |
6617 | ||
6618 | /* Return nonzero if *MASK has a bit set | |
6619 | that corresponds to one of the keyboard input descriptors. */ | |
6620 | ||
6621 | int | |
6622 | keyboard_bit_set (mask) | |
6623 | SELECT_TYPE *mask; | |
6624 | { | |
6625 | int fd; | |
6626 | ||
ee8e09af | 6627 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
6628 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6629 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6630 | return 1; | |
6631 | ||
6632 | return 0; | |
6633 | } | |
6634 | \f | |
dfcf069d | 6635 | void |
d0d6b7c5 JB |
6636 | init_process () |
6637 | { | |
6638 | register int i; | |
6639 | ||
6640 | #ifdef SIGCHLD | |
6641 | #ifndef CANNOT_DUMP | |
6642 | if (! noninteractive || initialized) | |
6643 | #endif | |
6644 | signal (SIGCHLD, sigchld_handler); | |
6645 | #endif | |
6646 | ||
6647 | FD_ZERO (&input_wait_mask); | |
a69281ff | 6648 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 6649 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 6650 | max_process_desc = 0; |
dd2281ae | 6651 | |
bad49fc7 KS |
6652 | #ifdef NON_BLOCKING_CONNECT |
6653 | FD_ZERO (&connect_wait_mask); | |
6654 | num_pending_connects = 0; | |
6655 | #endif | |
6656 | ||
2d942bfa KS |
6657 | #ifdef ADAPTIVE_READ_BUFFERING |
6658 | process_output_delay_count = 0; | |
6659 | process_output_skip = 0; | |
6660 | #endif | |
6661 | ||
a69281ff | 6662 | FD_SET (0, &input_wait_mask); |
dd2281ae | 6663 | |
d0d6b7c5 JB |
6664 | Vprocess_alist = Qnil; |
6665 | for (i = 0; i < MAXDESC; i++) | |
6666 | { | |
6667 | chan_process[i] = Qnil; | |
6668 | proc_buffered_char[i] = -1; | |
6669 | } | |
c7580538 KH |
6670 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
6671 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
6672 | #ifdef DATAGRAM_SOCKETS |
6673 | bzero (datagram_address, sizeof datagram_address); | |
6674 | #endif | |
9057ff80 | 6675 | |
c2bd2c26 KS |
6676 | #ifdef HAVE_SOCKETS |
6677 | { | |
6678 | Lisp_Object subfeatures = Qnil; | |
2ccf3102 KS |
6679 | struct socket_options *sopt; |
6680 | ||
9057ff80 KS |
6681 | #define ADD_SUBFEATURE(key, val) \ |
6682 | subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures) | |
6683 | ||
9057ff80 | 6684 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 6685 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
6686 | #endif |
6687 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 6688 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 KS |
6689 | #endif |
6690 | #ifdef HAVE_LOCAL_SOCKETS | |
c2bd2c26 | 6691 | ADD_SUBFEATURE (QCfamily, Qlocal); |
9057ff80 KS |
6692 | #endif |
6693 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 6694 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 6695 | #endif |
a8e8ea61 | 6696 | #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY)) |
c2bd2c26 | 6697 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 6698 | #endif |
2ccf3102 KS |
6699 | |
6700 | for (sopt = socket_options; sopt->name; sopt++) | |
6701 | subfeatures = Fcons (intern (sopt->name), subfeatures); | |
6702 | ||
c2bd2c26 KS |
6703 | Fprovide (intern ("make-network-process"), subfeatures); |
6704 | } | |
6705 | #endif /* HAVE_SOCKETS */ | |
d9e7c622 | 6706 | |
ecc175e2 | 6707 | #if defined (DARWIN) || defined (MAC_OSX) |
d9e7c622 ST |
6708 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive |
6709 | processes. As such, we only change the default value. */ | |
6710 | if (initialized) | |
6711 | { | |
6712 | char *release = get_operating_system_release(); | |
6713 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION | |
6714 | && release[1] == '.')) { | |
6715 | Vprocess_connection_type = Qnil; | |
6716 | } | |
6717 | } | |
6718 | #endif | |
d0d6b7c5 | 6719 | } |
312c9964 | 6720 | |
dfcf069d | 6721 | void |
d0d6b7c5 JB |
6722 | syms_of_process () |
6723 | { | |
d0d6b7c5 JB |
6724 | Qprocessp = intern ("processp"); |
6725 | staticpro (&Qprocessp); | |
6726 | Qrun = intern ("run"); | |
6727 | staticpro (&Qrun); | |
6728 | Qstop = intern ("stop"); | |
6729 | staticpro (&Qstop); | |
6730 | Qsignal = intern ("signal"); | |
6731 | staticpro (&Qsignal); | |
6732 | ||
6733 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
6734 | here again. | |
6735 | ||
6736 | Qexit = intern ("exit"); | |
6737 | staticpro (&Qexit); */ | |
6738 | ||
6739 | Qopen = intern ("open"); | |
6740 | staticpro (&Qopen); | |
6741 | Qclosed = intern ("closed"); | |
6742 | staticpro (&Qclosed); | |
dd2a17ab KS |
6743 | Qconnect = intern ("connect"); |
6744 | staticpro (&Qconnect); | |
6745 | Qfailed = intern ("failed"); | |
6746 | staticpro (&Qfailed); | |
e690ca94 KS |
6747 | Qlisten = intern ("listen"); |
6748 | staticpro (&Qlisten); | |
6749 | Qlocal = intern ("local"); | |
6750 | staticpro (&Qlocal); | |
9057ff80 KS |
6751 | Qdatagram = intern ("datagram"); |
6752 | staticpro (&Qdatagram); | |
e690ca94 KS |
6753 | |
6754 | QCname = intern (":name"); | |
6755 | staticpro (&QCname); | |
6756 | QCbuffer = intern (":buffer"); | |
6757 | staticpro (&QCbuffer); | |
6758 | QChost = intern (":host"); | |
6759 | staticpro (&QChost); | |
6760 | QCservice = intern (":service"); | |
6761 | staticpro (&QCservice); | |
9057ff80 KS |
6762 | QCtype = intern (":type"); |
6763 | staticpro (&QCtype); | |
e690ca94 KS |
6764 | QClocal = intern (":local"); |
6765 | staticpro (&QClocal); | |
6766 | QCremote = intern (":remote"); | |
6767 | staticpro (&QCremote); | |
6768 | QCcoding = intern (":coding"); | |
6769 | staticpro (&QCcoding); | |
6770 | QCserver = intern (":server"); | |
6771 | staticpro (&QCserver); | |
e690ca94 KS |
6772 | QCnowait = intern (":nowait"); |
6773 | staticpro (&QCnowait); | |
e690ca94 KS |
6774 | QCsentinel = intern (":sentinel"); |
6775 | staticpro (&QCsentinel); | |
6776 | QClog = intern (":log"); | |
6777 | staticpro (&QClog); | |
6778 | QCnoquery = intern (":noquery"); | |
6779 | staticpro (&QCnoquery); | |
6780 | QCstop = intern (":stop"); | |
6781 | staticpro (&QCstop); | |
6782 | QCoptions = intern (":options"); | |
6783 | staticpro (&QCoptions); | |
faa7db08 KS |
6784 | QCplist = intern (":plist"); |
6785 | staticpro (&QCplist); | |
7392e23c KS |
6786 | QCfilter_multibyte = intern (":filter-multibyte"); |
6787 | staticpro (&QCfilter_multibyte); | |
177c0ea7 | 6788 | |
6545aada RS |
6789 | Qlast_nonmenu_event = intern ("last-nonmenu-event"); |
6790 | staticpro (&Qlast_nonmenu_event); | |
6791 | ||
d0d6b7c5 JB |
6792 | staticpro (&Vprocess_alist); |
6793 | ||
6794 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
fdb82f93 PJ |
6795 | doc: /* *Non-nil means delete processes immediately when they exit. |
6796 | nil means don't delete them until `list-processes' is run. */); | |
d0d6b7c5 JB |
6797 | |
6798 | delete_exited_processes = 1; | |
6799 | ||
6800 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
6801 | doc: /* Control type of device used to communicate with subprocesses. |
6802 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
6803 | The value has no effect if the system has no ptys or if all ptys are busy: | |
6804 | then a pipe is used in any case. | |
6805 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
6806 | Vprocess_connection_type = Qt; |
6807 | ||
2d942bfa KS |
6808 | #ifdef ADAPTIVE_READ_BUFFERING |
6809 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
6810 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
f3d9532b | 6811 | On some systems, when Emacs reads the output from a subprocess, the output data |
2d942bfa KS |
6812 | is read in very small blocks, potentially resulting in very poor performance. |
6813 | This behaviour can be remedied to some extent by setting this variable to a | |
6814 | non-nil value, as it will automatically delay reading from such processes, to | |
f3d9532b | 6815 | allowing them to produce more output before Emacs tries to read it. |
2d942bfa KS |
6816 | If the value is t, the delay is reset after each write to the process; any other |
6817 | non-nil value means that the delay is not reset on write. | |
6818 | The variable takes effect when `start-process' is called. */); | |
6819 | Vprocess_adaptive_read_buffering = Qt; | |
6820 | #endif | |
6821 | ||
d0d6b7c5 JB |
6822 | defsubr (&Sprocessp); |
6823 | defsubr (&Sget_process); | |
6824 | defsubr (&Sget_buffer_process); | |
6825 | defsubr (&Sdelete_process); | |
6826 | defsubr (&Sprocess_status); | |
6827 | defsubr (&Sprocess_exit_status); | |
6828 | defsubr (&Sprocess_id); | |
6829 | defsubr (&Sprocess_name); | |
3b9a3dfa | 6830 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
6831 | defsubr (&Sprocess_command); |
6832 | defsubr (&Sset_process_buffer); | |
6833 | defsubr (&Sprocess_buffer); | |
6834 | defsubr (&Sprocess_mark); | |
6835 | defsubr (&Sset_process_filter); | |
6836 | defsubr (&Sprocess_filter); | |
6837 | defsubr (&Sset_process_sentinel); | |
6838 | defsubr (&Sprocess_sentinel); | |
de282a05 | 6839 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
6840 | defsubr (&Sset_process_inherit_coding_system_flag); |
6841 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
6842 | defsubr (&Sset_process_query_on_exit_flag); |
6843 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 6844 | defsubr (&Sprocess_contact); |
faa7db08 KS |
6845 | defsubr (&Sprocess_plist); |
6846 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
6847 | defsubr (&Slist_processes); |
6848 | defsubr (&Sprocess_list); | |
6849 | defsubr (&Sstart_process); | |
6850 | #ifdef HAVE_SOCKETS | |
2ccf3102 | 6851 | defsubr (&Sset_network_process_option); |
e690ca94 | 6852 | defsubr (&Smake_network_process); |
991234f0 | 6853 | defsubr (&Sformat_network_address); |
b8c7fd71 KS |
6854 | #endif /* HAVE_SOCKETS */ |
6855 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
161933c7 KS |
6856 | #ifdef SIOCGIFCONF |
6857 | defsubr (&Snetwork_interface_list); | |
6858 | #endif | |
6859 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
2ccf3102 | 6860 | defsubr (&Snetwork_interface_info); |
161933c7 | 6861 | #endif |
b8c7fd71 | 6862 | #endif /* HAVE_SOCKETS ... */ |
e690ca94 KS |
6863 | #ifdef DATAGRAM_SOCKETS |
6864 | defsubr (&Sprocess_datagram_address); | |
6865 | defsubr (&Sset_process_datagram_address); | |
6866 | #endif | |
d0d6b7c5 JB |
6867 | defsubr (&Saccept_process_output); |
6868 | defsubr (&Sprocess_send_region); | |
6869 | defsubr (&Sprocess_send_string); | |
6870 | defsubr (&Sinterrupt_process); | |
6871 | defsubr (&Skill_process); | |
6872 | defsubr (&Squit_process); | |
6873 | defsubr (&Sstop_process); | |
6874 | defsubr (&Scontinue_process); | |
b81ea5ef | 6875 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
6876 | defsubr (&Sprocess_send_eof); |
6877 | defsubr (&Ssignal_process); | |
6878 | defsubr (&Swaiting_for_user_input_p); | |
6879 | /* defsubr (&Sprocess_connection); */ | |
0fa1789e KH |
6880 | defsubr (&Sset_process_coding_system); |
6881 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
6882 | defsubr (&Sset_process_filter_multibyte); |
6883 | defsubr (&Sprocess_filter_multibyte_p); | |
d0d6b7c5 JB |
6884 | } |
6885 | ||
6720a7fb JB |
6886 | \f |
6887 | #else /* not subprocesses */ | |
6888 | ||
6889 | #include <sys/types.h> | |
6890 | #include <errno.h> | |
6891 | ||
6892 | #include "lisp.h" | |
6893 | #include "systime.h" | |
52a1b894 EZ |
6894 | #include "charset.h" |
6895 | #include "coding.h" | |
6720a7fb | 6896 | #include "termopts.h" |
81afb6d1 | 6897 | #include "sysselect.h" |
6720a7fb | 6898 | |
ff11dfa1 | 6899 | extern int frame_garbaged; |
6720a7fb | 6900 | |
f694e5d2 KH |
6901 | extern EMACS_TIME timer_check (); |
6902 | extern int timers_run; | |
6720a7fb | 6903 | |
9057ff80 KS |
6904 | Lisp_Object QCtype; |
6905 | ||
6720a7fb JB |
6906 | /* As described above, except assuming that there are no subprocesses: |
6907 | ||
6908 | Wait for timeout to elapse and/or keyboard input to be available. | |
6909 | ||
6910 | time_limit is: | |
6911 | timeout in seconds, or | |
6912 | zero for no limit, or | |
6913 | -1 means gobble data immediately available but don't wait for any. | |
6914 | ||
f76475ad | 6915 | read_kbd is a Lisp_Object: |
6720a7fb JB |
6916 | 0 to ignore keyboard input, or |
6917 | 1 to return when input is available, or | |
6918 | -1 means caller will actually read the input, so don't throw to | |
6919 | the quit handler. | |
b89a415a KS |
6920 | |
6921 | see full version for other parameters. We know that wait_proc will | |
6922 | always be NULL, since `subprocesses' isn't defined. | |
6720a7fb JB |
6923 | |
6924 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 6925 | output that arrives. |
6720a7fb | 6926 | |
eb8c3be9 | 6927 | Return true iff we received input from any process. */ |
6720a7fb JB |
6928 | |
6929 | int | |
214d6069 KS |
6930 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
6931 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
6932 | int time_limit, microsecs, read_kbd, do_display; |
6933 | Lisp_Object wait_for_cell; | |
6934 | struct Lisp_Process *wait_proc; | |
6935 | int just_wait_proc; | |
6720a7fb | 6936 | { |
52fd88d3 | 6937 | register int nfds; |
f694e5d2 | 6938 | EMACS_TIME end_time, timeout; |
8db121c4 | 6939 | SELECT_TYPE waitchannels; |
f694e5d2 | 6940 | int xerrno; |
6720a7fb JB |
6941 | |
6942 | /* What does time_limit really mean? */ | |
6943 | if (time_limit || microsecs) | |
6944 | { | |
6720a7fb | 6945 | EMACS_GET_TIME (end_time); |
52fd88d3 | 6946 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
6947 | EMACS_ADD_TIME (end_time, end_time, timeout); |
6948 | } | |
6720a7fb JB |
6949 | |
6950 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 6951 | and then turn off any other atimers, |
6720a7fb | 6952 | because the select emulator uses alarms. */ |
75eb23f1 | 6953 | stop_polling (); |
30904ab7 | 6954 | turn_on_atimers (0); |
6720a7fb | 6955 | |
52fd88d3 | 6956 | while (1) |
6720a7fb | 6957 | { |
bae8d137 | 6958 | int timeout_reduced_for_timers = 0; |
6720a7fb | 6959 | |
6720a7fb JB |
6960 | /* If calling from keyboard input, do not quit |
6961 | since we want to return C-g as an input character. | |
6962 | Otherwise, do pending quit if requested. */ | |
b89a415a | 6963 | if (read_kbd >= 0) |
6720a7fb JB |
6964 | QUIT; |
6965 | ||
0a65b032 | 6966 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6967 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
6968 | break; |
6969 | ||
bae8d137 RS |
6970 | /* Compute time from now till when time limit is up */ |
6971 | /* Exit if already run out */ | |
52fd88d3 EZ |
6972 | if (time_limit == -1) |
6973 | { | |
6974 | /* -1 specified for timeout means | |
6975 | gobble output available now | |
6976 | but don't wait at all. */ | |
6977 | ||
6978 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
6979 | } | |
6980 | else if (time_limit || microsecs) | |
6720a7fb | 6981 | { |
f694e5d2 KH |
6982 | EMACS_GET_TIME (timeout); |
6983 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
6984 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
6985 | break; |
6986 | } | |
52fd88d3 EZ |
6987 | else |
6988 | { | |
6989 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
6990 | } | |
6720a7fb | 6991 | |
bae8d137 RS |
6992 | /* If our caller will not immediately handle keyboard events, |
6993 | run timer events directly. | |
6994 | (Callers that will immediately read keyboard events | |
6995 | call timer_delay on their own.) */ | |
f3fbd155 | 6996 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6997 | { |
6998 | EMACS_TIME timer_delay; | |
0a65b032 | 6999 | |
9baacf76 | 7000 | do |
0a65b032 | 7001 | { |
9baacf76 GM |
7002 | int old_timers_run = timers_run; |
7003 | timer_delay = timer_check (1); | |
7004 | if (timers_run != old_timers_run && do_display) | |
7005 | /* We must retry, since a timer may have requeued itself | |
7006 | and that could alter the time delay. */ | |
3007ebfb | 7007 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
7008 | else |
7009 | break; | |
0a65b032 | 7010 | } |
9baacf76 | 7011 | while (!detect_input_pending ()); |
0a65b032 | 7012 | |
52fd88d3 | 7013 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7014 | if (read_kbd != 0 |
52fd88d3 EZ |
7015 | && requeued_events_pending_p ()) |
7016 | break; | |
7017 | ||
f694e5d2 | 7018 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
7019 | { |
7020 | EMACS_TIME difference; | |
f694e5d2 | 7021 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
7022 | if (EMACS_TIME_NEG_P (difference)) |
7023 | { | |
f694e5d2 | 7024 | timeout = timer_delay; |
bae8d137 RS |
7025 | timeout_reduced_for_timers = 1; |
7026 | } | |
7027 | } | |
7028 | } | |
7029 | ||
6720a7fb JB |
7030 | /* Cause C-g and alarm signals to take immediate action, |
7031 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7032 | if (read_kbd < 0) |
6720a7fb JB |
7033 | set_waiting_for_input (&timeout); |
7034 | ||
0a65b032 RS |
7035 | /* Wait till there is something to do. */ |
7036 | ||
b89a415a | 7037 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
7038 | FD_ZERO (&waitchannels); |
7039 | else | |
7040 | FD_SET (0, &waitchannels); | |
7041 | ||
ff11dfa1 | 7042 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7043 | reprocess its display stuff. */ |
5164ee8e | 7044 | if (frame_garbaged && do_display) |
0a65b032 RS |
7045 | { |
7046 | clear_waiting_for_input (); | |
3007ebfb | 7047 | redisplay_preserve_echo_area (15); |
b89a415a | 7048 | if (read_kbd < 0) |
0a65b032 RS |
7049 | set_waiting_for_input (&timeout); |
7050 | } | |
6720a7fb | 7051 | |
b89a415a | 7052 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
7053 | { |
7054 | nfds = 0; | |
7055 | FD_ZERO (&waitchannels); | |
7056 | } | |
7057 | else | |
7058 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7059 | &timeout); | |
f694e5d2 KH |
7060 | |
7061 | xerrno = errno; | |
6720a7fb JB |
7062 | |
7063 | /* Make C-g and alarm signals set flags again */ | |
7064 | clear_waiting_for_input (); | |
7065 | ||
7066 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7067 | do_pending_window_change (0); |
6720a7fb | 7068 | |
f694e5d2 KH |
7069 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7070 | /* We waited the full specified time, so return now. */ | |
7071 | break; | |
7072 | ||
6720a7fb JB |
7073 | if (nfds == -1) |
7074 | { | |
7075 | /* If the system call was interrupted, then go around the | |
7076 | loop again. */ | |
f694e5d2 | 7077 | if (xerrno == EINTR) |
8db121c4 | 7078 | FD_ZERO (&waitchannels); |
f694e5d2 | 7079 | else |
68c45bf0 | 7080 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb JB |
7081 | } |
7082 | #ifdef sun | |
7083 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) | |
7084 | /* System sometimes fails to deliver SIGIO. */ | |
7085 | kill (getpid (), SIGIO); | |
7086 | #endif | |
7324d660 | 7087 | #ifdef SIGIO |
b89a415a | 7088 | if (read_kbd && interrupt_input && (waitchannels & 1)) |
e643c5be | 7089 | kill (getpid (), SIGIO); |
7324d660 | 7090 | #endif |
6720a7fb | 7091 | |
f694e5d2 KH |
7092 | /* Check for keyboard input */ |
7093 | ||
b89a415a | 7094 | if (read_kbd |
78c1afb6 | 7095 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7096 | { |
78c1afb6 | 7097 | swallow_events (do_display); |
f694e5d2 | 7098 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7099 | break; |
78c1afb6 EZ |
7100 | } |
7101 | ||
52fd88d3 | 7102 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7103 | if (read_kbd |
52fd88d3 EZ |
7104 | && requeued_events_pending_p ()) |
7105 | break; | |
7106 | ||
f854a00b RS |
7107 | /* If wait_for_cell. check for keyboard input |
7108 | but don't run any timers. | |
7109 | ??? (It seems wrong to me to check for keyboard | |
7110 | input at all when wait_for_cell, but the code | |
7111 | has been this way since July 1994. | |
7112 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7113 | if (! NILP (wait_for_cell) |
f854a00b RS |
7114 | && detect_input_pending ()) |
7115 | { | |
7116 | swallow_events (do_display); | |
7117 | if (detect_input_pending ()) | |
7118 | break; | |
7119 | } | |
7120 | ||
0a65b032 | 7121 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7122 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7123 | break; |
6720a7fb JB |
7124 | } |
7125 | ||
a87b802f JB |
7126 | start_polling (); |
7127 | ||
6720a7fb JB |
7128 | return 0; |
7129 | } | |
7130 | ||
7131 | ||
e2ba787b PJ |
7132 | /* Don't confuse make-docfile by having two doc strings for this function. |
7133 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 7134 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
7135 | 0) |
7136 | (name) | |
6720a7fb JB |
7137 | register Lisp_Object name; |
7138 | { | |
7139 | return Qnil; | |
7140 | } | |
7141 | ||
e2ba787b PJ |
7142 | /* Don't confuse make-docfile by having two doc strings for this function. |
7143 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 7144 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7145 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7146 | 1, 1, 0, | |
7147 | 0) | |
7148 | (process) | |
52a1b894 EZ |
7149 | register Lisp_Object process; |
7150 | { | |
7151 | /* Ignore the argument and return the value of | |
7152 | inherit-process-coding-system. */ | |
7153 | return inherit_process_coding_system ? Qt : Qnil; | |
7154 | } | |
7155 | ||
6720a7fb JB |
7156 | /* Kill all processes associated with `buffer'. |
7157 | If `buffer' is nil, kill all processes. | |
7158 | Since we have no subprocesses, this does nothing. */ | |
7159 | ||
d9bb0c32 | 7160 | void |
6720a7fb JB |
7161 | kill_buffer_processes (buffer) |
7162 | Lisp_Object buffer; | |
7163 | { | |
7164 | } | |
7165 | ||
02b9b4fd | 7166 | void |
6720a7fb JB |
7167 | init_process () |
7168 | { | |
7169 | } | |
7170 | ||
02b9b4fd | 7171 | void |
6720a7fb JB |
7172 | syms_of_process () |
7173 | { | |
9057ff80 KS |
7174 | QCtype = intern (":type"); |
7175 | staticpro (&QCtype); | |
7176 | ||
6720a7fb | 7177 | defsubr (&Sget_buffer_process); |
52a1b894 | 7178 | defsubr (&Sprocess_inherit_coding_system_flag); |
6720a7fb JB |
7179 | } |
7180 | ||
7181 | \f | |
7182 | #endif /* not subprocesses */ | |
ab5796a9 MB |
7183 | |
7184 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
7185 | (do not change this comment) */ |