Commit | Line | Data |
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d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, |
3 | 1996, 1998, 1999, 2001, 2002, 2003, 2004, | |
4 | 2005 Free Software Foundation, Inc. | |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
1dc77cc3 | 10 | the Free Software Foundation; either version 2, or (at your option) |
d0d6b7c5 JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
d0d6b7c5 JB |
22 | |
23 | ||
18160b98 | 24 | #include <config.h> |
68c45bf0 PE |
25 | #include <signal.h> |
26 | ||
6720a7fb JB |
27 | /* This file is split into two parts by the following preprocessor |
28 | conditional. The 'then' clause contains all of the support for | |
29 | asynchronous subprocesses. The 'else' clause contains stub | |
30 | versions of some of the asynchronous subprocess routines that are | |
31 | often called elsewhere in Emacs, so we don't have to #ifdef the | |
32 | sections that call them. */ | |
33 | ||
34 | \f | |
d0d6b7c5 | 35 | #ifdef subprocesses |
d0d6b7c5 JB |
36 | |
37 | #include <stdio.h> | |
38 | #include <errno.h> | |
39 | #include <setjmp.h> | |
40 | #include <sys/types.h> /* some typedefs are used in sys/file.h */ | |
41 | #include <sys/file.h> | |
42 | #include <sys/stat.h> | |
93b4f699 RS |
43 | #ifdef HAVE_UNISTD_H |
44 | #include <unistd.h> | |
45 | #endif | |
d0d6b7c5 | 46 | |
f22ac298 | 47 | #if defined(WINDOWSNT) || defined(UNIX98_PTYS) |
e98d950b RS |
48 | #include <stdlib.h> |
49 | #include <fcntl.h> | |
50 | #endif /* not WINDOWSNT */ | |
51 | ||
d0d6b7c5 JB |
52 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
53 | #include <sys/socket.h> | |
54 | #include <netdb.h> | |
55 | #include <netinet/in.h> | |
56 | #include <arpa/inet.h> | |
f2cfa9a6 RS |
57 | #ifdef NEED_NET_ERRNO_H |
58 | #include <net/errno.h> | |
59 | #endif /* NEED_NET_ERRNO_H */ | |
e690ca94 KS |
60 | |
61 | /* Are local (unix) sockets supported? */ | |
28c6e94f | 62 | #if defined (HAVE_SYS_UN_H) && !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
e690ca94 KS |
63 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
64 | #define AF_LOCAL AF_UNIX | |
65 | #endif | |
66 | #ifdef AF_LOCAL | |
67 | #define HAVE_LOCAL_SOCKETS | |
68 | #include <sys/un.h> | |
69 | #endif | |
70 | #endif | |
d0d6b7c5 JB |
71 | #endif /* HAVE_SOCKETS */ |
72 | ||
827a1788 | 73 | /* TERM is a poor-man's SLIP, used on GNU/Linux. */ |
1d2c16fa RS |
74 | #ifdef TERM |
75 | #include <client.h> | |
76 | #endif | |
77 | ||
cf32fea0 PR |
78 | /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */ |
79 | #ifdef HAVE_BROKEN_INET_ADDR | |
79967d5e RS |
80 | #define IN_ADDR struct in_addr |
81 | #define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1) | |
82 | #else | |
83 | #define IN_ADDR unsigned long | |
84 | #define NUMERIC_ADDR_ERROR (numeric_addr == -1) | |
85 | #endif | |
86 | ||
6df54671 | 87 | #if defined(BSD_SYSTEM) || defined(STRIDE) |
d0d6b7c5 | 88 | #include <sys/ioctl.h> |
0ad77c54 | 89 | #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5) |
d0d6b7c5 JB |
90 | #include <fcntl.h> |
91 | #endif /* HAVE_PTYS and no O_NDELAY */ | |
6df54671 | 92 | #endif /* BSD_SYSTEM || STRIDE */ |
d0d6b7c5 | 93 | |
99e3d726 RS |
94 | #ifdef BROKEN_O_NONBLOCK |
95 | #undef O_NONBLOCK | |
96 | #endif /* BROKEN_O_NONBLOCK */ | |
97 | ||
d0d6b7c5 JB |
98 | #ifdef NEED_BSDTTY |
99 | #include <bsdtty.h> | |
100 | #endif | |
101 | ||
161933c7 KS |
102 | /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */ |
103 | #ifdef HAVE_SOCKETS | |
104 | #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H) | |
105 | /* sys/ioctl.h may have been included already */ | |
106 | #ifndef SIOCGIFADDR | |
107 | #include <sys/ioctl.h> | |
108 | #endif | |
109 | #include <net/if.h> | |
110 | #endif | |
111 | #endif | |
112 | ||
d0d6b7c5 JB |
113 | #ifdef IRIS |
114 | #include <sys/sysmacros.h> /* for "minor" */ | |
115 | #endif /* not IRIS */ | |
177c0ea7 | 116 | |
e62cab61 DL |
117 | #ifdef HAVE_SYS_WAIT |
118 | #include <sys/wait.h> | |
119 | #endif | |
d0d6b7c5 JB |
120 | |
121 | #include "systime.h" | |
36ebaafa | 122 | #include "systty.h" |
d0d6b7c5 JB |
123 | |
124 | #include "lisp.h" | |
125 | #include "window.h" | |
126 | #include "buffer.h" | |
0fa1789e KH |
127 | #include "charset.h" |
128 | #include "coding.h" | |
d0d6b7c5 JB |
129 | #include "process.h" |
130 | #include "termhooks.h" | |
131 | #include "termopts.h" | |
132 | #include "commands.h" | |
3ec68006 | 133 | #include "keyboard.h" |
1dc77cc3 | 134 | #include "frame.h" |
ececcbec | 135 | #include "blockinput.h" |
dfcf069d | 136 | #include "dispextern.h" |
e0016554 | 137 | #include "composite.h" |
30904ab7 | 138 | #include "atimer.h" |
d0d6b7c5 | 139 | |
dd2281ae | 140 | Lisp_Object Qprocessp; |
dd2a17ab | 141 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 142 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
9057ff80 KS |
143 | Lisp_Object Qlocal, Qdatagram; |
144 | Lisp_Object QCname, QCbuffer, QChost, QCservice, QCtype; | |
e690ca94 | 145 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 146 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 147 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
7392e23c | 148 | Lisp_Object QCfilter_multibyte; |
6545aada | 149 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
150 | /* QCfamily is declared and initialized in xfaces.c, |
151 | QCfilter in keyboard.c. */ | |
152 | extern Lisp_Object QCfamily, QCfilter; | |
153 | ||
d0d6b7c5 JB |
154 | /* Qexit is declared and initialized in eval.c. */ |
155 | ||
e0f712ba AC |
156 | /* QCfamily is defined in xfaces.c. */ |
157 | extern Lisp_Object QCfamily; | |
158 | /* QCfilter is defined in keyboard.c. */ | |
159 | extern Lisp_Object QCfilter; | |
160 | ||
d0d6b7c5 | 161 | /* a process object is a network connection when its childp field is neither |
365aee82 | 162 | Qt nor Qnil but is instead a property list (KEY VAL ...). */ |
d0d6b7c5 JB |
163 | |
164 | #ifdef HAVE_SOCKETS | |
de282a05 | 165 | #define NETCONN_P(p) (GC_CONSP (XPROCESS (p)->childp)) |
e690ca94 | 166 | #define NETCONN1_P(p) (GC_CONSP ((p)->childp)) |
d0d6b7c5 JB |
167 | #else |
168 | #define NETCONN_P(p) 0 | |
e690ca94 | 169 | #define NETCONN1_P(p) 0 |
d0d6b7c5 JB |
170 | #endif /* HAVE_SOCKETS */ |
171 | ||
172 | /* Define first descriptor number available for subprocesses. */ | |
173 | #ifdef VMS | |
174 | #define FIRST_PROC_DESC 1 | |
175 | #else /* Not VMS */ | |
176 | #define FIRST_PROC_DESC 3 | |
177 | #endif | |
178 | ||
179 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
180 | testing SIGCHLD. */ | |
181 | ||
182 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
183 | #define SIGCHLD SIGCLD | |
184 | #endif /* SIGCLD */ | |
185 | ||
186 | #include "syssignal.h" | |
187 | ||
889255b4 | 188 | #include "syswait.h" |
d0d6b7c5 | 189 | |
41d03b9a | 190 | extern void set_waiting_for_input P_ ((EMACS_TIME *)); |
d9e7c622 | 191 | extern char *get_operating_system_release (); |
41d03b9a | 192 | |
3ec68006 | 193 | #ifndef USE_CRT_DLL |
b062d1fe | 194 | extern int errno; |
3ec68006 | 195 | #endif |
b062d1fe | 196 | #ifdef VMS |
d0d6b7c5 | 197 | extern char *sys_errlist[]; |
b062d1fe | 198 | #endif |
d0d6b7c5 | 199 | |
5f0929a7 RS |
200 | #ifndef HAVE_H_ERRNO |
201 | extern int h_errno; | |
202 | #endif | |
203 | ||
d0d6b7c5 JB |
204 | /* t means use pty, nil means use a pipe, |
205 | maybe other values to come. */ | |
dd2281ae | 206 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 JB |
207 | |
208 | #ifdef SKTPAIR | |
209 | #ifndef HAVE_SOCKETS | |
210 | #include <sys/socket.h> | |
211 | #endif | |
212 | #endif /* SKTPAIR */ | |
213 | ||
17d02632 KH |
214 | /* These next two vars are non-static since sysdep.c uses them in the |
215 | emulation of `select'. */ | |
d0d6b7c5 | 216 | /* Number of events of change of status of a process. */ |
17d02632 | 217 | int process_tick; |
d0d6b7c5 | 218 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 219 | int update_tick; |
d0d6b7c5 | 220 | |
dd2a17ab KS |
221 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
222 | ||
223 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
224 | #undef NON_BLOCKING_CONNECT | |
225 | #else | |
226 | #ifndef NON_BLOCKING_CONNECT | |
227 | #ifdef HAVE_SOCKETS | |
228 | #ifdef HAVE_SELECT | |
229 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
230 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
231 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
232 | #define NON_BLOCKING_CONNECT | |
233 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
234 | #endif /* O_NONBLOCK || O_NDELAY */ | |
235 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
236 | #endif /* HAVE_SELECT */ | |
237 | #endif /* HAVE_SOCKETS */ | |
238 | #endif /* NON_BLOCKING_CONNECT */ | |
239 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
240 | ||
e690ca94 KS |
241 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
242 | this system. We need to read full packets, so we need a | |
243 | "non-destructive" select. So we require either native select, | |
244 | or emulation of select using FIONREAD. */ | |
245 | ||
e690ca94 KS |
246 | #ifdef BROKEN_DATAGRAM_SOCKETS |
247 | #undef DATAGRAM_SOCKETS | |
248 | #else | |
249 | #ifndef DATAGRAM_SOCKETS | |
250 | #ifdef HAVE_SOCKETS | |
251 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
252 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
253 | #define DATAGRAM_SOCKETS | |
254 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
255 | #endif /* HAVE_SELECT || FIONREAD */ | |
256 | #endif /* HAVE_SOCKETS */ | |
257 | #endif /* DATAGRAM_SOCKETS */ | |
258 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
259 | ||
dd2a17ab KS |
260 | #ifdef TERM |
261 | #undef NON_BLOCKING_CONNECT | |
e690ca94 | 262 | #undef DATAGRAM_SOCKETS |
dd2a17ab KS |
263 | #endif |
264 | ||
2d942bfa KS |
265 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
266 | #ifdef EMACS_HAS_USECS | |
267 | #define ADAPTIVE_READ_BUFFERING | |
268 | #endif | |
269 | #endif | |
270 | ||
271 | #ifdef ADAPTIVE_READ_BUFFERING | |
272 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
273 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
274 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
275 | ||
db853b7a KS |
276 | /* Number of processes which have a non-zero read_output_delay, |
277 | and therefore might be delayed for adaptive read buffering. */ | |
2d942bfa KS |
278 | |
279 | static int process_output_delay_count; | |
280 | ||
db853b7a | 281 | /* Non-zero if any process has non-nil read_output_skip. */ |
2d942bfa KS |
282 | |
283 | static int process_output_skip; | |
284 | ||
285 | /* Non-nil means to delay reading process output to improve buffering. | |
286 | A value of t means that delay is reset after each send, any other | |
db853b7a KS |
287 | non-nil value does not reset the delay. A value of nil disables |
288 | adaptive read buffering completely. */ | |
2d942bfa KS |
289 | static Lisp_Object Vprocess_adaptive_read_buffering; |
290 | #else | |
291 | #define process_output_delay_count 0 | |
292 | #endif | |
293 | ||
e690ca94 | 294 | |
5886acf9 | 295 | #include "sysselect.h" |
d0d6b7c5 | 296 | |
ff6daed3 KS |
297 | static int keyboard_bit_set P_ ((SELECT_TYPE *)); |
298 | static void deactivate_process P_ ((Lisp_Object)); | |
299 | static void status_notify P_ ((struct Lisp_Process *)); | |
300 | static int read_process_output P_ ((Lisp_Object, int)); | |
41d03b9a | 301 | |
583dcae4 | 302 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 303 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 304 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
305 | #define POLL_FOR_INPUT |
306 | #endif | |
307 | ||
a69281ff | 308 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 309 | |
dd2281ae RS |
310 | static SELECT_TYPE input_wait_mask; |
311 | ||
a69281ff RS |
312 | /* Mask that excludes keyboard input descriptor (s). */ |
313 | ||
314 | static SELECT_TYPE non_keyboard_wait_mask; | |
315 | ||
b5dc1c83 RS |
316 | /* Mask that excludes process input descriptor (s). */ |
317 | ||
318 | static SELECT_TYPE non_process_wait_mask; | |
319 | ||
bad49fc7 | 320 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
321 | /* Mask of bits indicating the descriptors that we wait for connect to |
322 | complete on. Once they complete, they are removed from this mask | |
323 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
324 | ||
325 | static SELECT_TYPE connect_wait_mask; | |
326 | ||
327 | /* Number of bits set in connect_wait_mask. */ | |
328 | static int num_pending_connects; | |
329 | ||
bad49fc7 KS |
330 | #define IF_NON_BLOCKING_CONNECT(s) s |
331 | #else | |
332 | #define IF_NON_BLOCKING_CONNECT(s) | |
333 | #endif | |
334 | ||
7d0e672e RS |
335 | /* The largest descriptor currently in use for a process object. */ |
336 | static int max_process_desc; | |
337 | ||
a69281ff RS |
338 | /* The largest descriptor currently in use for keyboard input. */ |
339 | static int max_keyboard_desc; | |
d0d6b7c5 | 340 | |
dd2281ae RS |
341 | /* Nonzero means delete a process right away if it exits. */ |
342 | static int delete_exited_processes; | |
d0d6b7c5 JB |
343 | |
344 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 345 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
346 | |
347 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 348 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
349 | |
350 | /* Buffered-ahead input char from process, indexed by channel. | |
351 | -1 means empty (no char is buffered). | |
352 | Used on sys V where the only way to tell if there is any | |
353 | output from the process is to read at least one char. | |
354 | Always -1 on systems that support FIONREAD. */ | |
355 | ||
e98d950b RS |
356 | /* Don't make static; need to access externally. */ |
357 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 358 | |
0fa1789e | 359 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
360 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
361 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 362 | |
e690ca94 KS |
363 | #ifdef DATAGRAM_SOCKETS |
364 | /* Table of `partner address' for datagram sockets. */ | |
365 | struct sockaddr_and_len { | |
366 | struct sockaddr *sa; | |
367 | int len; | |
368 | } datagram_address[MAXDESC]; | |
369 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
bed9664a | 370 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0) |
e690ca94 KS |
371 | #else |
372 | #define DATAGRAM_CHAN_P(chan) (0) | |
373 | #define DATAGRAM_CONN_P(proc) (0) | |
374 | #endif | |
375 | ||
dd2281ae | 376 | static Lisp_Object get_process (); |
dd2a17ab | 377 | static void exec_sentinel (); |
93b4f699 | 378 | |
fb4c3627 | 379 | extern EMACS_TIME timer_check (); |
5de50bfb | 380 | extern int timers_run; |
fb4c3627 | 381 | |
93b4f699 RS |
382 | /* Maximum number of bytes to send to a pty without an eof. */ |
383 | static int pty_max_bytes; | |
3b9a3dfa | 384 | |
875e6b94 | 385 | #ifdef HAVE_PTYS |
e62cab61 DL |
386 | #ifdef HAVE_PTY_H |
387 | #include <pty.h> | |
388 | #endif | |
875e6b94 | 389 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
390 | |
391 | static char pty_name[24]; | |
875e6b94 | 392 | #endif |
d0d6b7c5 JB |
393 | \f |
394 | /* Compute the Lisp form of the process status, p->status, from | |
395 | the numeric status that was returned by `wait'. */ | |
396 | ||
ff6daed3 | 397 | static Lisp_Object status_convert (); |
f9738840 | 398 | |
ff6daed3 | 399 | static void |
d0d6b7c5 JB |
400 | update_status (p) |
401 | struct Lisp_Process *p; | |
402 | { | |
403 | union { int i; WAITTYPE wt; } u; | |
404 | u.i = XFASTINT (p->raw_status_low) + (XFASTINT (p->raw_status_high) << 16); | |
405 | p->status = status_convert (u.wt); | |
406 | p->raw_status_low = Qnil; | |
407 | p->raw_status_high = Qnil; | |
408 | } | |
409 | ||
177c0ea7 | 410 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
411 | the list that we use internally. */ |
412 | ||
ff6daed3 | 413 | static Lisp_Object |
d0d6b7c5 JB |
414 | status_convert (w) |
415 | WAITTYPE w; | |
416 | { | |
417 | if (WIFSTOPPED (w)) | |
418 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
419 | else if (WIFEXITED (w)) | |
420 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
421 | WCOREDUMP (w) ? Qt : Qnil)); | |
422 | else if (WIFSIGNALED (w)) | |
423 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
424 | WCOREDUMP (w) ? Qt : Qnil)); | |
425 | else | |
426 | return Qrun; | |
427 | } | |
428 | ||
429 | /* Given a status-list, extract the three pieces of information | |
430 | and store them individually through the three pointers. */ | |
431 | ||
ff6daed3 | 432 | static void |
d0d6b7c5 JB |
433 | decode_status (l, symbol, code, coredump) |
434 | Lisp_Object l; | |
435 | Lisp_Object *symbol; | |
436 | int *code; | |
437 | int *coredump; | |
438 | { | |
439 | Lisp_Object tem; | |
440 | ||
bcd69aea | 441 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
442 | { |
443 | *symbol = l; | |
444 | *code = 0; | |
445 | *coredump = 0; | |
446 | } | |
447 | else | |
448 | { | |
70949dac KR |
449 | *symbol = XCAR (l); |
450 | tem = XCDR (l); | |
451 | *code = XFASTINT (XCAR (tem)); | |
452 | tem = XCDR (tem); | |
d0d6b7c5 JB |
453 | *coredump = !NILP (tem); |
454 | } | |
455 | } | |
456 | ||
457 | /* Return a string describing a process status list. */ | |
458 | ||
116c423c KS |
459 | static Lisp_Object |
460 | status_message (p) | |
461 | struct Lisp_Process *p; | |
d0d6b7c5 | 462 | { |
116c423c | 463 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
464 | Lisp_Object symbol; |
465 | int code, coredump; | |
466 | Lisp_Object string, string2; | |
467 | ||
468 | decode_status (status, &symbol, &code, &coredump); | |
469 | ||
470 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
471 | { | |
68c45bf0 | 472 | char *signame; |
ca9c0567 | 473 | synchronize_system_messages_locale (); |
68c45bf0 | 474 | signame = strsignal (code); |
b97ad9ea RS |
475 | if (signame == 0) |
476 | signame = "unknown"; | |
477 | string = build_string (signame); | |
d0d6b7c5 | 478 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
a814cc69 | 479 | SSET (string, 0, DOWNCASE (SREF (string, 0))); |
d0d6b7c5 JB |
480 | return concat2 (string, string2); |
481 | } | |
482 | else if (EQ (symbol, Qexit)) | |
483 | { | |
116c423c KS |
484 | if (NETCONN1_P (p)) |
485 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
486 | if (code == 0) |
487 | return build_string ("finished\n"); | |
f2980264 | 488 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 489 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
490 | return concat3 (build_string ("exited abnormally with code "), |
491 | string, string2); | |
d0d6b7c5 | 492 | } |
dd2a17ab KS |
493 | else if (EQ (symbol, Qfailed)) |
494 | { | |
495 | string = Fnumber_to_string (make_number (code)); | |
496 | string2 = build_string ("\n"); | |
e690ca94 KS |
497 | return concat3 (build_string ("failed with code "), |
498 | string, string2); | |
dd2a17ab | 499 | } |
d0d6b7c5 JB |
500 | else |
501 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
502 | } | |
503 | \f | |
504 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 505 | |
875e6b94 KH |
506 | /* Open an available pty, returning a file descriptor. |
507 | Return -1 on failure. | |
508 | The file name of the terminal corresponding to the pty | |
509 | is left in the variable pty_name. */ | |
510 | ||
ff6daed3 | 511 | static int |
d0d6b7c5 JB |
512 | allocate_pty () |
513 | { | |
dfcf069d | 514 | register int c, i; |
d0d6b7c5 JB |
515 | int fd; |
516 | ||
517 | #ifdef PTY_ITERATION | |
518 | PTY_ITERATION | |
519 | #else | |
520 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
521 | for (i = 0; i < 16; i++) | |
522 | #endif | |
523 | { | |
26d7389d | 524 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
525 | #ifdef PTY_NAME_SPRINTF |
526 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
527 | #else |
528 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
529 | #endif /* no PTY_NAME_SPRINTF */ |
530 | ||
4d7c105e RS |
531 | #ifdef PTY_OPEN |
532 | PTY_OPEN; | |
533 | #else /* no PTY_OPEN */ | |
34967d0f | 534 | { |
34967d0f SM |
535 | # ifdef IRIS |
536 | /* Unusual IRIS code */ | |
537 | *ptyv = emacs_open ("/dev/ptc", O_RDWR | O_NDELAY, 0); | |
538 | if (fd < 0) | |
539 | return -1; | |
540 | if (fstat (fd, &stb) < 0) | |
541 | return -1; | |
542 | # else /* not IRIS */ | |
543 | { /* Some systems name their pseudoterminals so that there are gaps in | |
544 | the usual sequence - for example, on HP9000/S700 systems, there | |
545 | are no pseudoterminals with names ending in 'f'. So we wait for | |
546 | three failures in a row before deciding that we've reached the | |
547 | end of the ptys. */ | |
548 | int failed_count = 0; | |
f3d9532b | 549 | |
34967d0f SM |
550 | if (stat (pty_name, &stb) < 0) |
551 | { | |
552 | failed_count++; | |
553 | if (failed_count >= 3) | |
554 | return -1; | |
555 | } | |
556 | else | |
557 | failed_count = 0; | |
32676c08 | 558 | } |
34967d0f SM |
559 | # ifdef O_NONBLOCK |
560 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
561 | # else | |
562 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
563 | # endif | |
564 | # endif /* not IRIS */ | |
565 | } | |
4d7c105e | 566 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
567 | |
568 | if (fd >= 0) | |
569 | { | |
570 | /* check to make certain that both sides are available | |
571 | this avoids a nasty yet stupid bug in rlogins */ | |
572 | #ifdef PTY_TTY_NAME_SPRINTF | |
573 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 JB |
574 | #else |
575 | sprintf (pty_name, "/dev/tty%c%x", c, i); | |
d0d6b7c5 JB |
576 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
577 | #ifndef UNIPLUS | |
578 | if (access (pty_name, 6) != 0) | |
579 | { | |
68c45bf0 | 580 | emacs_close (fd); |
34967d0f | 581 | # if !defined(IRIS) && !defined(__sgi) |
d0d6b7c5 | 582 | continue; |
34967d0f | 583 | # else |
d0d6b7c5 | 584 | return -1; |
34967d0f | 585 | # endif /* IRIS */ |
d0d6b7c5 JB |
586 | } |
587 | #endif /* not UNIPLUS */ | |
588 | setup_pty (fd); | |
589 | return fd; | |
590 | } | |
591 | } | |
592 | return -1; | |
593 | } | |
594 | #endif /* HAVE_PTYS */ | |
595 | \f | |
ff6daed3 | 596 | static Lisp_Object |
d0d6b7c5 JB |
597 | make_process (name) |
598 | Lisp_Object name; | |
599 | { | |
600 | register Lisp_Object val, tem, name1; | |
601 | register struct Lisp_Process *p; | |
602 | char suffix[10]; | |
603 | register int i; | |
604 | ||
98423852 | 605 | p = allocate_process (); |
23d6bb9c | 606 | |
1d056e64 KH |
607 | XSETINT (p->infd, -1); |
608 | XSETINT (p->outfd, -1); | |
22719df2 KH |
609 | XSETFASTINT (p->pid, 0); |
610 | XSETFASTINT (p->tick, 0); | |
611 | XSETFASTINT (p->update_tick, 0); | |
d0d6b7c5 JB |
612 | p->raw_status_low = Qnil; |
613 | p->raw_status_high = Qnil; | |
614 | p->status = Qrun; | |
615 | p->mark = Fmake_marker (); | |
616 | ||
2d942bfa KS |
617 | #ifdef ADAPTIVE_READ_BUFFERING |
618 | p->adaptive_read_buffering = Qnil; | |
619 | XSETFASTINT (p->read_output_delay, 0); | |
620 | p->read_output_skip = Qnil; | |
621 | #endif | |
622 | ||
d0d6b7c5 JB |
623 | /* If name is already in use, modify it until it is unused. */ |
624 | ||
625 | name1 = name; | |
626 | for (i = 1; ; i++) | |
627 | { | |
628 | tem = Fget_process (name1); | |
629 | if (NILP (tem)) break; | |
630 | sprintf (suffix, "<%d>", i); | |
631 | name1 = concat2 (name, build_string (suffix)); | |
632 | } | |
633 | name = name1; | |
634 | p->name = name; | |
23d6bb9c | 635 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
636 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
637 | return val; | |
638 | } | |
639 | ||
ff6daed3 | 640 | static void |
d0d6b7c5 JB |
641 | remove_process (proc) |
642 | register Lisp_Object proc; | |
643 | { | |
644 | register Lisp_Object pair; | |
645 | ||
646 | pair = Frassq (proc, Vprocess_alist); | |
647 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
648 | |
649 | deactivate_process (proc); | |
650 | } | |
03f04413 KH |
651 | |
652 | /* Setup coding systems of PROCESS. */ | |
653 | ||
654 | void | |
655 | setup_process_coding_systems (process) | |
656 | Lisp_Object process; | |
657 | { | |
658 | struct Lisp_Process *p = XPROCESS (process); | |
659 | int inch = XINT (p->infd); | |
660 | int outch = XINT (p->outfd); | |
661 | ||
20f1ef2e KH |
662 | if (inch < 0 || outch < 0) |
663 | return; | |
664 | ||
03f04413 KH |
665 | if (!proc_decode_coding_system[inch]) |
666 | proc_decode_coding_system[inch] | |
667 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
668 | setup_coding_system (p->decode_coding_system, | |
669 | proc_decode_coding_system[inch]); | |
670 | if (! NILP (p->filter)) | |
671 | { | |
672 | if (NILP (p->filter_multibyte)) | |
673 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
674 | } | |
675 | else if (BUFFERP (p->buffer)) | |
676 | { | |
677 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
678 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
679 | } | |
680 | ||
681 | if (!proc_encode_coding_system[outch]) | |
682 | proc_encode_coding_system[outch] | |
683 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
684 | setup_coding_system (p->encode_coding_system, | |
685 | proc_encode_coding_system[outch]); | |
686 | } | |
d0d6b7c5 JB |
687 | \f |
688 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
689 | doc: /* Return t if OBJECT is a process. */) |
690 | (object) | |
4ee3e309 | 691 | Lisp_Object object; |
d0d6b7c5 | 692 | { |
4ee3e309 | 693 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
694 | } |
695 | ||
696 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
697 | doc: /* Return the process named NAME, or nil if there is none. */) |
698 | (name) | |
d0d6b7c5 JB |
699 | register Lisp_Object name; |
700 | { | |
bcd69aea | 701 | if (PROCESSP (name)) |
d0d6b7c5 | 702 | return name; |
b7826503 | 703 | CHECK_STRING (name); |
d0d6b7c5 JB |
704 | return Fcdr (Fassoc (name, Vprocess_alist)); |
705 | } | |
706 | ||
707 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
708 | doc: /* Return the (or a) process associated with BUFFER. |
709 | BUFFER may be a buffer or the name of one. */) | |
710 | (buffer) | |
4ee3e309 | 711 | register Lisp_Object buffer; |
d0d6b7c5 JB |
712 | { |
713 | register Lisp_Object buf, tail, proc; | |
714 | ||
4ee3e309 EN |
715 | if (NILP (buffer)) return Qnil; |
716 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
717 | if (NILP (buf)) return Qnil; |
718 | ||
719 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
720 | { | |
721 | proc = Fcdr (Fcar (tail)); | |
bcd69aea | 722 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
723 | return proc; |
724 | } | |
725 | return Qnil; | |
726 | } | |
727 | ||
ebb9e16f JB |
728 | /* This is how commands for the user decode process arguments. It |
729 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
730 | Buffers denote the first process in the buffer, and nil denotes the | |
731 | current buffer. */ | |
d0d6b7c5 | 732 | |
77b221b1 | 733 | static Lisp_Object |
d0d6b7c5 JB |
734 | get_process (name) |
735 | register Lisp_Object name; | |
736 | { | |
1619761d KH |
737 | register Lisp_Object proc, obj; |
738 | if (STRINGP (name)) | |
739 | { | |
740 | obj = Fget_process (name); | |
741 | if (NILP (obj)) | |
742 | obj = Fget_buffer (name); | |
743 | if (NILP (obj)) | |
d5db4077 | 744 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
745 | } |
746 | else if (NILP (name)) | |
747 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 748 | else |
1619761d KH |
749 | obj = name; |
750 | ||
751 | /* Now obj should be either a buffer object or a process object. | |
752 | */ | |
753 | if (BUFFERP (obj)) | |
d0d6b7c5 | 754 | { |
1619761d | 755 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 756 | if (NILP (proc)) |
d5db4077 | 757 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 758 | } |
d0d6b7c5 | 759 | else |
1619761d | 760 | { |
b7826503 | 761 | CHECK_PROCESS (obj); |
1619761d KH |
762 | proc = obj; |
763 | } | |
764 | return proc; | |
d0d6b7c5 JB |
765 | } |
766 | ||
767 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, | |
fdb82f93 PJ |
768 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
769 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
770 | nil, indicating the current buffer's process. */) | |
771 | (process) | |
4ee3e309 | 772 | register Lisp_Object process; |
d0d6b7c5 | 773 | { |
ff6daed3 KS |
774 | register struct Lisp_Process *p; |
775 | ||
4ee3e309 | 776 | process = get_process (process); |
ff6daed3 KS |
777 | p = XPROCESS (process); |
778 | ||
779 | p->raw_status_low = Qnil; | |
780 | p->raw_status_high = Qnil; | |
781 | if (NETCONN1_P (p)) | |
d0d6b7c5 | 782 | { |
ff6daed3 KS |
783 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
784 | XSETINT (p->tick, ++process_tick); | |
785 | status_notify (p); | |
d0d6b7c5 | 786 | } |
ff6daed3 | 787 | else if (XINT (p->infd) >= 0) |
d0d6b7c5 | 788 | { |
4ee3e309 | 789 | Fkill_process (process, Qnil); |
d0d6b7c5 | 790 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ |
ff6daed3 | 791 | p->status |
d0d6b7c5 | 792 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); |
ff6daed3 KS |
793 | XSETINT (p->tick, ++process_tick); |
794 | status_notify (p); | |
d0d6b7c5 | 795 | } |
116c423c | 796 | remove_process (process); |
d0d6b7c5 JB |
797 | return Qnil; |
798 | } | |
799 | \f | |
800 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
801 | doc: /* Return the status of PROCESS. |
802 | The returned value is one of the following symbols: | |
803 | run -- for a process that is running. | |
804 | stop -- for a process stopped but continuable. | |
805 | exit -- for a process that has exited. | |
806 | signal -- for a process that has got a fatal signal. | |
807 | open -- for a network stream connection that is open. | |
e690ca94 | 808 | listen -- for a network stream server that is listening. |
fdb82f93 | 809 | closed -- for a network stream connection that is closed. |
e4984112 KS |
810 | connect -- when waiting for a non-blocking connection to complete. |
811 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
812 | nil -- if arg is a process name and no such process exists. |
813 | PROCESS may be a process, a buffer, the name of a process, or | |
814 | nil, indicating the current buffer's process. */) | |
815 | (process) | |
4ee3e309 | 816 | register Lisp_Object process; |
d0d6b7c5 JB |
817 | { |
818 | register struct Lisp_Process *p; | |
819 | register Lisp_Object status; | |
343f4114 | 820 | |
4ee3e309 EN |
821 | if (STRINGP (process)) |
822 | process = Fget_process (process); | |
343f4114 | 823 | else |
4ee3e309 | 824 | process = get_process (process); |
343f4114 | 825 | |
4ee3e309 EN |
826 | if (NILP (process)) |
827 | return process; | |
343f4114 | 828 | |
4ee3e309 | 829 | p = XPROCESS (process); |
d0d6b7c5 JB |
830 | if (!NILP (p->raw_status_low)) |
831 | update_status (p); | |
832 | status = p->status; | |
bcd69aea | 833 | if (CONSP (status)) |
70949dac | 834 | status = XCAR (status); |
e690ca94 | 835 | if (NETCONN1_P (p)) |
d0d6b7c5 | 836 | { |
e690ca94 | 837 | if (EQ (status, Qexit)) |
d0d6b7c5 | 838 | status = Qclosed; |
e690ca94 KS |
839 | else if (EQ (p->command, Qt)) |
840 | status = Qstop; | |
841 | else if (EQ (status, Qrun)) | |
842 | status = Qopen; | |
d0d6b7c5 JB |
843 | } |
844 | return status; | |
845 | } | |
846 | ||
847 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
848 | 1, 1, 0, | |
fdb82f93 PJ |
849 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
850 | If PROCESS has not yet exited or died, return 0. */) | |
851 | (process) | |
4ee3e309 | 852 | register Lisp_Object process; |
d0d6b7c5 | 853 | { |
b7826503 | 854 | CHECK_PROCESS (process); |
4ee3e309 EN |
855 | if (!NILP (XPROCESS (process)->raw_status_low)) |
856 | update_status (XPROCESS (process)); | |
857 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 858 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
859 | return make_number (0); |
860 | } | |
861 | ||
862 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 863 | doc: /* Return the process id of PROCESS. |
f3d9532b | 864 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 PJ |
865 | For a network connection, this value is nil. */) |
866 | (process) | |
4ee3e309 | 867 | register Lisp_Object process; |
d0d6b7c5 | 868 | { |
b7826503 | 869 | CHECK_PROCESS (process); |
4ee3e309 | 870 | return XPROCESS (process)->pid; |
d0d6b7c5 JB |
871 | } |
872 | ||
873 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
874 | doc: /* Return the name of PROCESS, as a string. |
875 | This is the name of the program invoked in PROCESS, | |
876 | possibly modified to make it unique among process names. */) | |
877 | (process) | |
4ee3e309 | 878 | register Lisp_Object process; |
d0d6b7c5 | 879 | { |
b7826503 | 880 | CHECK_PROCESS (process); |
4ee3e309 | 881 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
882 | } |
883 | ||
884 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
885 | doc: /* Return the command that was executed to start PROCESS. |
886 | This is a list of strings, the first string being the program executed | |
887 | and the rest of the strings being the arguments given to it. | |
888 | For a non-child channel, this is nil. */) | |
889 | (process) | |
4ee3e309 | 890 | register Lisp_Object process; |
d0d6b7c5 | 891 | { |
b7826503 | 892 | CHECK_PROCESS (process); |
4ee3e309 | 893 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
894 | } |
895 | ||
3b9a3dfa | 896 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
897 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
898 | This is the terminal that the process itself reads and writes on, | |
899 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
900 | (process) | |
4ee3e309 | 901 | register Lisp_Object process; |
3b9a3dfa | 902 | { |
b7826503 | 903 | CHECK_PROCESS (process); |
4ee3e309 | 904 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
905 | } |
906 | ||
d0d6b7c5 | 907 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
908 | 2, 2, 0, |
909 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
910 | (process, buffer) | |
4ee3e309 | 911 | register Lisp_Object process, buffer; |
d0d6b7c5 | 912 | { |
e690ca94 KS |
913 | struct Lisp_Process *p; |
914 | ||
b7826503 | 915 | CHECK_PROCESS (process); |
d0d6b7c5 | 916 | if (!NILP (buffer)) |
b7826503 | 917 | CHECK_BUFFER (buffer); |
e690ca94 KS |
918 | p = XPROCESS (process); |
919 | p->buffer = buffer; | |
920 | if (NETCONN1_P (p)) | |
921 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); | |
03f04413 | 922 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
923 | return buffer; |
924 | } | |
925 | ||
926 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
927 | 1, 1, 0, |
928 | doc: /* Return the buffer PROCESS is associated with. | |
929 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
930 | (process) | |
4ee3e309 | 931 | register Lisp_Object process; |
d0d6b7c5 | 932 | { |
b7826503 | 933 | CHECK_PROCESS (process); |
4ee3e309 | 934 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
935 | } |
936 | ||
937 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
938 | 1, 1, 0, |
939 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
940 | (process) | |
4ee3e309 | 941 | register Lisp_Object process; |
d0d6b7c5 | 942 | { |
b7826503 | 943 | CHECK_PROCESS (process); |
4ee3e309 | 944 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
945 | } |
946 | ||
947 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
948 | 2, 2, 0, |
949 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
950 | t means stop accepting output from the process. | |
3452df9e KS |
951 | |
952 | When a process has a filter, its buffer is not used for output. | |
953 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 954 | passed to the filter. |
3452df9e | 955 | |
fdb82f93 | 956 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
957 | The string argument is normally a multibyte string, except: |
958 | - if the process' input coding system is no-conversion or raw-text, | |
959 | it is a unibyte string (the non-converted input), or else | |
960 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
961 | string (the result of converting the decoded input multibyte | |
962 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 963 | (process, filter) |
4ee3e309 | 964 | register Lisp_Object process, filter; |
d0d6b7c5 | 965 | { |
471f86b9 | 966 | struct Lisp_Process *p; |
177c0ea7 | 967 | |
b7826503 | 968 | CHECK_PROCESS (process); |
471f86b9 GM |
969 | p = XPROCESS (process); |
970 | ||
971 | /* Don't signal an error if the process' input file descriptor | |
972 | is closed. This could make debugging Lisp more difficult, | |
973 | for example when doing something like | |
974 | ||
975 | (setq process (start-process ...)) | |
976 | (debug) | |
977 | (set-process-filter process ...) */ | |
177c0ea7 | 978 | |
471f86b9 | 979 | if (XINT (p->infd) >= 0) |
a69281ff | 980 | { |
e690ca94 | 981 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 GM |
982 | { |
983 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
984 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
985 | } | |
e690ca94 KS |
986 | else if (EQ (p->filter, Qt) |
987 | && !EQ (p->command, Qt)) /* Network process not stopped. */ | |
471f86b9 GM |
988 | { |
989 | FD_SET (XINT (p->infd), &input_wait_mask); | |
990 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
991 | } | |
a69281ff | 992 | } |
177c0ea7 | 993 | |
471f86b9 | 994 | p->filter = filter; |
e690ca94 KS |
995 | if (NETCONN1_P (p)) |
996 | p->childp = Fplist_put (p->childp, QCfilter, filter); | |
03f04413 | 997 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
998 | return filter; |
999 | } | |
1000 | ||
1001 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1002 | 1, 1, 0, |
1003 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1004 | See `set-process-filter' for more info on filter functions. */) | |
1005 | (process) | |
4ee3e309 | 1006 | register Lisp_Object process; |
d0d6b7c5 | 1007 | { |
b7826503 | 1008 | CHECK_PROCESS (process); |
4ee3e309 | 1009 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1010 | } |
1011 | ||
1012 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1013 | 2, 2, 0, |
1014 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1015 | The sentinel is called as a function when the process changes state. | |
1016 | It gets two arguments: the process, and a string describing the change. */) | |
1017 | (process, sentinel) | |
4ee3e309 | 1018 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 1019 | { |
2ccf3102 KS |
1020 | struct Lisp_Process *p; |
1021 | ||
b7826503 | 1022 | CHECK_PROCESS (process); |
2ccf3102 KS |
1023 | p = XPROCESS (process); |
1024 | ||
1025 | p->sentinel = sentinel; | |
1026 | if (NETCONN1_P (p)) | |
1027 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); | |
d0d6b7c5 JB |
1028 | return sentinel; |
1029 | } | |
1030 | ||
1031 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1032 | 1, 1, 0, |
1033 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1034 | See `set-process-sentinel' for more info on sentinels. */) | |
1035 | (process) | |
4ee3e309 | 1036 | register Lisp_Object process; |
d0d6b7c5 | 1037 | { |
b7826503 | 1038 | CHECK_PROCESS (process); |
4ee3e309 | 1039 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1040 | } |
1041 | ||
396df322 | 1042 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1043 | Sset_process_window_size, 3, 3, 0, |
1044 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
1045 | (process, height, width) | |
4ee3e309 | 1046 | register Lisp_Object process, height, width; |
396df322 | 1047 | { |
b7826503 PJ |
1048 | CHECK_PROCESS (process); |
1049 | CHECK_NATNUM (height); | |
1050 | CHECK_NATNUM (width); | |
177c0ea7 | 1051 | |
989521fd | 1052 | if (XINT (XPROCESS (process)->infd) < 0 |
471f86b9 GM |
1053 | || set_window_size (XINT (XPROCESS (process)->infd), |
1054 | XINT (height), XINT (width)) <= 0) | |
396df322 RS |
1055 | return Qnil; |
1056 | else | |
1057 | return Qt; | |
1058 | } | |
1059 | ||
52a1b894 | 1060 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1061 | Fset_process_inherit_coding_system_flag, |
1062 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1063 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1064 | If the second argument FLAG is non-nil, then the variable | |
1065 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1066 | will be bound to the value of the coding system used to decode | |
1067 | the process output. | |
1068 | ||
1069 | This is useful when the coding system specified for the process buffer | |
1070 | leaves either the character code conversion or the end-of-line conversion | |
1071 | unspecified, or if the coding system used to decode the process output | |
1072 | is more appropriate for saving the process buffer. | |
1073 | ||
1074 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1075 | starting the process is an alternative way of setting the inherit flag | |
1076 | for the process which will run. */) | |
1077 | (process, flag) | |
52a1b894 EZ |
1078 | register Lisp_Object process, flag; |
1079 | { | |
b7826503 | 1080 | CHECK_PROCESS (process); |
aa91317a | 1081 | XPROCESS (process)->inherit_coding_system_flag = flag; |
52a1b894 EZ |
1082 | return flag; |
1083 | } | |
1084 | ||
1085 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1086 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1087 | 1, 1, 0, | |
1088 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1089 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1090 | associated with PROCESS will inherit the coding system used to decode | |
1091 | the process output. */) | |
1092 | (process) | |
52a1b894 EZ |
1093 | register Lisp_Object process; |
1094 | { | |
b7826503 | 1095 | CHECK_PROCESS (process); |
aa91317a | 1096 | return XPROCESS (process)->inherit_coding_system_flag; |
52a1b894 EZ |
1097 | } |
1098 | ||
e690ca94 KS |
1099 | DEFUN ("set-process-query-on-exit-flag", |
1100 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1101 | 2, 2, 0, | |
1102 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1103 | If the second argument FLAG is non-nil, Emacs will query the user before |
e690ca94 KS |
1104 | exiting if PROCESS is running. */) |
1105 | (process, flag) | |
1106 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1107 | { |
b7826503 | 1108 | CHECK_PROCESS (process); |
e690ca94 KS |
1109 | XPROCESS (process)->kill_without_query = Fnull (flag); |
1110 | return flag; | |
d0d6b7c5 | 1111 | } |
312c9964 | 1112 | |
e690ca94 KS |
1113 | DEFUN ("process-query-on-exit-flag", |
1114 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1115 | 1, 1, 0, |
f3d9532b | 1116 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
fdb82f93 | 1117 | (process) |
de282a05 RS |
1118 | register Lisp_Object process; |
1119 | { | |
b7826503 | 1120 | CHECK_PROCESS (process); |
e690ca94 KS |
1121 | return Fnull (XPROCESS (process)->kill_without_query); |
1122 | } | |
1123 | ||
1124 | #ifdef DATAGRAM_SOCKETS | |
1125 | Lisp_Object Fprocess_datagram_address (); | |
1126 | #endif | |
1127 | ||
1128 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1129 | 1, 2, 0, | |
1130 | doc: /* Return the contact info of PROCESS; t for a real child. | |
1131 | For a net connection, the value depends on the optional KEY arg. | |
1132 | If KEY is nil, value is a cons cell of the form (HOST SERVICE), | |
1133 | if KEY is t, the complete contact information for the connection is | |
1134 | returned, else the specific value for the keyword KEY is returned. | |
1135 | See `make-network-process' for a list of keywords. */) | |
1136 | (process, key) | |
1137 | register Lisp_Object process, key; | |
1138 | { | |
1139 | Lisp_Object contact; | |
1140 | ||
1141 | CHECK_PROCESS (process); | |
1142 | contact = XPROCESS (process)->childp; | |
1143 | ||
1144 | #ifdef DATAGRAM_SOCKETS | |
1145 | if (DATAGRAM_CONN_P (process) | |
1146 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1147 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1148 | Fprocess_datagram_address (process)); |
1149 | #endif | |
1150 | ||
1151 | if (!NETCONN_P (process) || EQ (key, Qt)) | |
1152 | return contact; | |
1153 | if (NILP (key)) | |
1154 | return Fcons (Fplist_get (contact, QChost), | |
1155 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
1156 | return Fplist_get (contact, key); | |
de282a05 RS |
1157 | } |
1158 | ||
faa7db08 KS |
1159 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1160 | 1, 1, 0, | |
1161 | doc: /* Return the plist of PROCESS. */) | |
1162 | (process) | |
1163 | register Lisp_Object process; | |
365aee82 | 1164 | { |
ac4a7584 | 1165 | CHECK_PROCESS (process); |
faa7db08 | 1166 | return XPROCESS (process)->plist; |
ac4a7584 | 1167 | } |
365aee82 | 1168 | |
faa7db08 KS |
1169 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1170 | 2, 2, 0, | |
26a086c6 | 1171 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1172 | (process, plist) |
1173 | register Lisp_Object process, plist; | |
ac4a7584 | 1174 | { |
365aee82 | 1175 | CHECK_PROCESS (process); |
faa7db08 | 1176 | CHECK_LIST (plist); |
365aee82 | 1177 | |
faa7db08 | 1178 | XPROCESS (process)->plist = plist; |
26a086c6 | 1179 | return plist; |
365aee82 KS |
1180 | } |
1181 | ||
312c9964 RS |
1182 | #if 0 /* Turned off because we don't currently record this info |
1183 | in the process. Perhaps add it. */ | |
1184 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1185 | doc: /* Return the connection type of PROCESS. |
1186 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1187 | a socket connection. */) | |
1188 | (process) | |
312c9964 RS |
1189 | Lisp_Object process; |
1190 | { | |
1191 | return XPROCESS (process)->type; | |
1192 | } | |
1193 | #endif | |
991234f0 KS |
1194 | |
1195 | #ifdef HAVE_SOCKETS | |
1196 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1197 | 1, 2, 0, |
991234f0 | 1198 | doc: /* Convert network ADDRESS from internal format to a string. |
0dccee41 KS |
1199 | If optional second argument OMIT-PORT is non-nil, don't include a port |
1200 | number in the string; in this case, interpret a 4 element vector as an | |
1201 | IP address. Returns nil if format of ADDRESS is invalid. */) | |
1202 | (address, omit_port) | |
1203 | Lisp_Object address, omit_port; | |
991234f0 | 1204 | { |
991234f0 KS |
1205 | if (NILP (address)) |
1206 | return Qnil; | |
1207 | ||
1208 | if (STRINGP (address)) /* AF_LOCAL */ | |
1209 | return address; | |
1210 | ||
1211 | if (VECTORP (address)) /* AF_INET */ | |
1212 | { | |
1213 | register struct Lisp_Vector *p = XVECTOR (address); | |
1214 | Lisp_Object args[6]; | |
0dccee41 | 1215 | int nargs, i; |
991234f0 | 1216 | |
0dccee41 KS |
1217 | if (!NILP (omit_port) && (p->size == 4 || p->size == 5)) |
1218 | { | |
1219 | args[0] = build_string ("%d.%d.%d.%d"); | |
1220 | nargs = 4; | |
1221 | } | |
1222 | else if (p->size == 5) | |
1223 | { | |
1224 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1225 | nargs = 5; | |
1226 | } | |
1227 | else | |
991234f0 KS |
1228 | return Qnil; |
1229 | ||
0dccee41 KS |
1230 | for (i = 0; i < nargs; i++) |
1231 | args[i+1] = p->contents[i]; | |
1232 | return Fformat (nargs+1, args); | |
991234f0 KS |
1233 | } |
1234 | ||
1235 | if (CONSP (address)) | |
1236 | { | |
1237 | Lisp_Object args[2]; | |
1238 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1239 | args[1] = Fcar (address); |
991234f0 | 1240 | return Fformat (2, args); |
177c0ea7 | 1241 | |
991234f0 KS |
1242 | } |
1243 | ||
1244 | return Qnil; | |
1245 | } | |
1246 | #endif | |
d0d6b7c5 | 1247 | \f |
ff6daed3 | 1248 | static Lisp_Object |
e690ca94 KS |
1249 | list_processes_1 (query_only) |
1250 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1251 | { |
1252 | register Lisp_Object tail, tem; | |
1253 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1254 | register struct Lisp_Process *p; |
e690ca94 KS |
1255 | char tembuf[300]; |
1256 | int w_proc, w_buffer, w_tty; | |
1257 | Lisp_Object i_status, i_buffer, i_tty, i_command; | |
1258 | ||
1259 | w_proc = 4; /* Proc */ | |
1260 | w_buffer = 6; /* Buffer */ | |
1261 | w_tty = 0; /* Omit if no ttys */ | |
1262 | ||
1263 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1264 | { | |
1265 | int i; | |
1266 | ||
1267 | proc = Fcdr (Fcar (tail)); | |
1268 | p = XPROCESS (proc); | |
1269 | if (NILP (p->childp)) | |
1270 | continue; | |
1271 | if (!NILP (query_only) && !NILP (p->kill_without_query)) | |
1272 | continue; | |
1273 | if (STRINGP (p->name) | |
d5db4077 | 1274 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1275 | w_proc = i; |
1276 | if (!NILP (p->buffer)) | |
1277 | { | |
1278 | if (NILP (XBUFFER (p->buffer)->name) && w_buffer < 8) | |
1279 | w_buffer = 8; /* (Killed) */ | |
d5db4077 | 1280 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1281 | w_buffer = i; |
1282 | } | |
1283 | if (STRINGP (p->tty_name) | |
d5db4077 | 1284 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1285 | w_tty = i; |
1286 | } | |
1287 | ||
1288 | XSETFASTINT (i_status, w_proc + 1); | |
1289 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1290 | if (w_tty) | |
1291 | { | |
1292 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
1293 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_tty + 1); | |
1294 | } else { | |
1295 | i_tty = Qnil; | |
1296 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1297 | } | |
d0d6b7c5 | 1298 | |
22719df2 | 1299 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1300 | |
1301 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1302 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1303 | |
1304 | current_buffer->truncate_lines = Qt; | |
1305 | ||
e690ca94 KS |
1306 | write_string ("Proc", -1); |
1307 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1308 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1309 | if (!NILP (i_tty)) | |
1310 | { | |
1311 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1312 | } | |
1313 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1314 | write_string ("\n", -1); | |
1315 | ||
1316 | write_string ("----", -1); | |
1317 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1318 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1319 | if (!NILP (i_tty)) | |
1320 | { | |
1321 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1322 | } | |
1323 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1324 | write_string ("\n", -1); | |
d0d6b7c5 JB |
1325 | |
1326 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1327 | { | |
1328 | Lisp_Object symbol; | |
1329 | ||
1330 | proc = Fcdr (Fcar (tail)); | |
1331 | p = XPROCESS (proc); | |
1332 | if (NILP (p->childp)) | |
1333 | continue; | |
e690ca94 KS |
1334 | if (!NILP (query_only) && !NILP (p->kill_without_query)) |
1335 | continue; | |
d0d6b7c5 JB |
1336 | |
1337 | Finsert (1, &p->name); | |
e690ca94 | 1338 | Findent_to (i_status, minspace); |
d0d6b7c5 JB |
1339 | |
1340 | if (!NILP (p->raw_status_low)) | |
1341 | update_status (p); | |
1342 | symbol = p->status; | |
bcd69aea | 1343 | if (CONSP (p->status)) |
70949dac | 1344 | symbol = XCAR (p->status); |
d0d6b7c5 | 1345 | |
177c0ea7 | 1346 | |
d0d6b7c5 JB |
1347 | if (EQ (symbol, Qsignal)) |
1348 | { | |
1349 | Lisp_Object tem; | |
1350 | tem = Fcar (Fcdr (p->status)); | |
1351 | #ifdef VMS | |
1352 | if (XINT (tem) < NSIG) | |
b0310da4 | 1353 | write_string (sys_errlist [XINT (tem)], -1); |
d0d6b7c5 JB |
1354 | else |
1355 | #endif | |
1356 | Fprinc (symbol, Qnil); | |
1357 | } | |
e690ca94 | 1358 | else if (NETCONN1_P (p)) |
d0d6b7c5 | 1359 | { |
e690ca94 | 1360 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1361 | write_string ("closed", -1); |
e690ca94 KS |
1362 | else if (EQ (p->command, Qt)) |
1363 | write_string ("stopped", -1); | |
1364 | else if (EQ (symbol, Qrun)) | |
1365 | write_string ("open", -1); | |
d0d6b7c5 JB |
1366 | else |
1367 | Fprinc (symbol, Qnil); | |
1368 | } | |
1369 | else | |
1370 | Fprinc (symbol, Qnil); | |
1371 | ||
1372 | if (EQ (symbol, Qexit)) | |
1373 | { | |
1374 | Lisp_Object tem; | |
1375 | tem = Fcar (Fcdr (p->status)); | |
1376 | if (XFASTINT (tem)) | |
1377 | { | |
3162bafa | 1378 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1379 | write_string (tembuf, -1); |
1380 | } | |
1381 | } | |
1382 | ||
1383 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
1384 | remove_process (proc); | |
1385 | ||
e690ca94 | 1386 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1387 | if (NILP (p->buffer)) |
1388 | insert_string ("(none)"); | |
1389 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1390 | insert_string ("(Killed)"); | |
1391 | else | |
1392 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1393 | ||
e690ca94 KS |
1394 | if (!NILP (i_tty)) |
1395 | { | |
1396 | Findent_to (i_tty, minspace); | |
1397 | if (STRINGP (p->tty_name)) | |
1398 | Finsert (1, &p->tty_name); | |
1399 | } | |
a9fde32e | 1400 | |
e690ca94 | 1401 | Findent_to (i_command, minspace); |
a9fde32e | 1402 | |
e690ca94 KS |
1403 | if (EQ (p->status, Qlisten)) |
1404 | { | |
1405 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1406 | if (INTEGERP (port)) | |
1407 | port = Fnumber_to_string (port); | |
991234f0 | 1408 | if (NILP (port)) |
0dccee41 | 1409 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1410 | sprintf (tembuf, "(network %s server on %s)\n", |
bed9664a | 1411 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1412 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1413 | insert_string (tembuf); |
1414 | } | |
1415 | else if (NETCONN1_P (p)) | |
d0d6b7c5 | 1416 | { |
e690ca94 KS |
1417 | /* For a local socket, there is no host name, |
1418 | so display service instead. */ | |
1419 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1420 | if (!STRINGP (host)) | |
1421 | { | |
1422 | host = Fplist_get (p->childp, QCservice); | |
1423 | if (INTEGERP (host)) | |
1424 | host = Fnumber_to_string (host); | |
1425 | } | |
991234f0 | 1426 | if (NILP (host)) |
0dccee41 | 1427 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1428 | sprintf (tembuf, "(network %s connection to %s)\n", |
bed9664a | 1429 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1430 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 JB |
1431 | insert_string (tembuf); |
1432 | } | |
177c0ea7 | 1433 | else |
d0d6b7c5 JB |
1434 | { |
1435 | tem = p->command; | |
1436 | while (1) | |
1437 | { | |
1438 | tem1 = Fcar (tem); | |
1439 | Finsert (1, &tem1); | |
1440 | tem = Fcdr (tem); | |
1441 | if (NILP (tem)) | |
1442 | break; | |
1443 | insert_string (" "); | |
1444 | } | |
1445 | insert_string ("\n"); | |
1446 | } | |
1447 | } | |
1448 | return Qnil; | |
1449 | } | |
1450 | ||
e690ca94 | 1451 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1452 | doc: /* Display a list of all processes. |
e690ca94 KS |
1453 | If optional argument QUERY-ONLY is non-nil, only processes with |
1454 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1455 | Any process listed as exited or signaled is actually eliminated |
1456 | after the listing is made. */) | |
e690ca94 KS |
1457 | (query_only) |
1458 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1459 | { |
1460 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1461 | list_processes_1, query_only); |
d0d6b7c5 JB |
1462 | return Qnil; |
1463 | } | |
1464 | ||
1465 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1466 | doc: /* Return a list of all processes. */) |
1467 | () | |
d0d6b7c5 JB |
1468 | { |
1469 | return Fmapcar (Qcdr, Vprocess_alist); | |
1470 | } | |
1471 | \f | |
b0310da4 JB |
1472 | /* Starting asynchronous inferior processes. */ |
1473 | ||
1474 | static Lisp_Object start_process_unwind (); | |
1475 | ||
d0d6b7c5 | 1476 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1477 | doc: /* Start a program in a subprocess. Return the process object for it. |
1478 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1479 | BUFFER is the buffer (or buffer name) to associate with the process. |
fdb82f93 PJ |
1480 | Process output goes at end of that buffer, unless you specify |
1481 | an output stream or filter function to handle the output. | |
1482 | BUFFER may be also nil, meaning that this process is not associated | |
1483 | with any buffer. | |
553acde5 | 1484 | PROGRAM is the program file name. It is searched for in PATH. |
3ecdf100 | 1485 | Remaining arguments are strings to give program as arguments. |
320aebc9 | 1486 | |
3ecdf100 | 1487 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1488 | (nargs, args) |
d0d6b7c5 JB |
1489 | int nargs; |
1490 | register Lisp_Object *args; | |
1491 | { | |
1e30af70 | 1492 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 JB |
1493 | #ifdef VMS |
1494 | register unsigned char *new_argv; | |
1495 | int len; | |
1496 | #else | |
1497 | register unsigned char **new_argv; | |
1498 | #endif | |
1499 | register int i; | |
aed13378 | 1500 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1501 | |
1502 | buffer = args[1]; | |
1503 | if (!NILP (buffer)) | |
1504 | buffer = Fget_buffer_create (buffer); | |
1505 | ||
1e30af70 JB |
1506 | /* Make sure that the child will be able to chdir to the current |
1507 | buffer's current directory, or its unhandled equivalent. We | |
1508 | can't just have the child check for an error when it does the | |
1509 | chdir, since it's in a vfork. | |
1510 | ||
1511 | We have to GCPRO around this because Fexpand_file_name and | |
1512 | Funhandled_file_name_directory might call a file name handling | |
1513 | function. The argument list is protected by the caller, so all | |
1514 | we really have to worry about is buffer. */ | |
1515 | { | |
1516 | struct gcpro gcpro1, gcpro2; | |
1517 | ||
1518 | current_dir = current_buffer->directory; | |
1519 | ||
1520 | GCPRO2 (buffer, current_dir); | |
1521 | ||
177c0ea7 | 1522 | current_dir |
7af71e17 RS |
1523 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), |
1524 | Qnil); | |
1e30af70 JB |
1525 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1526 | report_file_error ("Setting current directory", | |
1527 | Fcons (current_buffer->directory, Qnil)); | |
1528 | ||
1529 | UNGCPRO; | |
1530 | } | |
1531 | ||
d0d6b7c5 | 1532 | name = args[0]; |
b7826503 | 1533 | CHECK_STRING (name); |
d0d6b7c5 JB |
1534 | |
1535 | program = args[2]; | |
1536 | ||
b7826503 | 1537 | CHECK_STRING (program); |
d0d6b7c5 | 1538 | |
d0d6b7c5 | 1539 | proc = make_process (name); |
b0310da4 JB |
1540 | /* If an error occurs and we can't start the process, we want to |
1541 | remove it from the process list. This means that each error | |
1542 | check in create_process doesn't need to call remove_process | |
1543 | itself; it's all taken care of here. */ | |
1544 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1545 | |
1546 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1547 | XPROCESS (proc)->plist = Qnil; |
d0d6b7c5 JB |
1548 | XPROCESS (proc)->buffer = buffer; |
1549 | XPROCESS (proc)->sentinel = Qnil; | |
1550 | XPROCESS (proc)->filter = Qnil; | |
03f04413 KH |
1551 | XPROCESS (proc)->filter_multibyte |
1552 | = buffer_defaults.enable_multibyte_characters; | |
d0d6b7c5 JB |
1553 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); |
1554 | ||
2d942bfa KS |
1555 | #ifdef ADAPTIVE_READ_BUFFERING |
1556 | XPROCESS (proc)->adaptive_read_buffering = Vprocess_adaptive_read_buffering; | |
1557 | #endif | |
1558 | ||
7af71e17 RS |
1559 | /* Make the process marker point into the process buffer (if any). */ |
1560 | if (!NILP (buffer)) | |
d8a2934e RS |
1561 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1562 | BUF_ZV (XBUFFER (buffer)), | |
1563 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1564 | |
67918941 | 1565 | { |
d5d4ae71 KH |
1566 | /* Decide coding systems for communicating with the process. Here |
1567 | we don't setup the structure coding_system nor pay attention to | |
1568 | unibyte mode. They are done in create_process. */ | |
1569 | ||
67918941 RS |
1570 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1571 | Lisp_Object coding_systems = Qt; | |
1572 | Lisp_Object val, *args2; | |
a4a37e65 | 1573 | struct gcpro gcpro1, gcpro2; |
67918941 | 1574 | |
d5d4ae71 KH |
1575 | val = Vcoding_system_for_read; |
1576 | if (NILP (val)) | |
67918941 RS |
1577 | { |
1578 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1579 | args2[0] = Qstart_process; | |
1580 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1581 | GCPRO2 (proc, current_dir); |
67918941 RS |
1582 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1583 | UNGCPRO; | |
1584 | if (CONSP (coding_systems)) | |
70949dac | 1585 | val = XCAR (coding_systems); |
67918941 | 1586 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1587 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1588 | } |
1589 | XPROCESS (proc)->decode_coding_system = val; | |
1590 | ||
d5d4ae71 KH |
1591 | val = Vcoding_system_for_write; |
1592 | if (NILP (val)) | |
67918941 RS |
1593 | { |
1594 | if (EQ (coding_systems, Qt)) | |
1595 | { | |
1596 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1597 | args2[0] = Qstart_process; | |
1598 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1599 | GCPRO2 (proc, current_dir); |
67918941 RS |
1600 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1601 | UNGCPRO; | |
1602 | } | |
1603 | if (CONSP (coding_systems)) | |
70949dac | 1604 | val = XCDR (coding_systems); |
67918941 | 1605 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1606 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1607 | } |
1608 | XPROCESS (proc)->encode_coding_system = val; | |
1609 | } | |
0fa1789e | 1610 | |
a4a37e65 KH |
1611 | #ifdef VMS |
1612 | /* Make a one member argv with all args concatenated | |
1613 | together separated by a blank. */ | |
d5db4077 | 1614 | len = SBYTES (program) + 2; |
a4a37e65 KH |
1615 | for (i = 3; i < nargs; i++) |
1616 | { | |
1617 | tem = args[i]; | |
b7826503 | 1618 | CHECK_STRING (tem); |
d5db4077 | 1619 | len += SBYTES (tem) + 1; /* count the blank */ |
a4a37e65 KH |
1620 | } |
1621 | new_argv = (unsigned char *) alloca (len); | |
d5db4077 | 1622 | strcpy (new_argv, SDATA (program)); |
a4a37e65 KH |
1623 | for (i = 3; i < nargs; i++) |
1624 | { | |
1625 | tem = args[i]; | |
b7826503 | 1626 | CHECK_STRING (tem); |
a4a37e65 | 1627 | strcat (new_argv, " "); |
d5db4077 | 1628 | strcat (new_argv, SDATA (tem)); |
a4a37e65 KH |
1629 | } |
1630 | /* Need to add code here to check for program existence on VMS */ | |
177c0ea7 | 1631 | |
a4a37e65 KH |
1632 | #else /* not VMS */ |
1633 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1634 | ||
ed30cf85 RS |
1635 | /* If program file name is not absolute, search our path for it. |
1636 | Put the name we will really use in TEM. */ | |
d5db4077 KR |
1637 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) |
1638 | && !(SCHARS (program) > 1 | |
1639 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
a4a37e65 KH |
1640 | { |
1641 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1642 | ||
1643 | tem = Qnil; | |
1644 | GCPRO4 (name, program, buffer, current_dir); | |
cc4db0c7 | 1645 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); |
a4a37e65 KH |
1646 | UNGCPRO; |
1647 | if (NILP (tem)) | |
1648 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1649 | tem = Fexpand_file_name (tem, Qnil); | |
a4a37e65 KH |
1650 | } |
1651 | else | |
1652 | { | |
1653 | if (!NILP (Ffile_directory_p (program))) | |
1654 | error ("Specified program for new process is a directory"); | |
ed30cf85 | 1655 | tem = program; |
a4a37e65 KH |
1656 | } |
1657 | ||
ed30cf85 RS |
1658 | /* If program file name starts with /: for quoting a magic name, |
1659 | discard that. */ | |
1660 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1661 | && SREF (tem, 1) == ':') | |
1662 | tem = Fsubstring (tem, make_number (2), Qnil); | |
1663 | ||
1664 | /* Encode the file name and put it in NEW_ARGV. | |
1665 | That's where the child will use it to execute the program. */ | |
1666 | tem = ENCODE_FILE (tem); | |
1667 | new_argv[0] = SDATA (tem); | |
1668 | ||
a4a37e65 KH |
1669 | /* Here we encode arguments by the coding system used for sending |
1670 | data to the process. We don't support using different coding | |
1671 | systems for encoding arguments and for encoding data sent to the | |
1672 | process. */ | |
1673 | ||
1674 | for (i = 3; i < nargs; i++) | |
1675 | { | |
1676 | tem = args[i]; | |
b7826503 | 1677 | CHECK_STRING (tem); |
a4a37e65 KH |
1678 | if (STRING_MULTIBYTE (tem)) |
1679 | tem = (code_convert_string_norecord | |
1680 | (tem, XPROCESS (proc)->encode_coding_system, 1)); | |
d5db4077 | 1681 | new_argv[i - 2] = SDATA (tem); |
a4a37e65 KH |
1682 | } |
1683 | new_argv[i - 2] = 0; | |
1684 | #endif /* not VMS */ | |
1685 | ||
0fa1789e | 1686 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
e7fbaa65 | 1687 | XPROCESS (proc)->decoding_carryover = make_number (0); |
0fa1789e | 1688 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); |
e7fbaa65 | 1689 | XPROCESS (proc)->encoding_carryover = make_number (0); |
0fa1789e | 1690 | |
52a1b894 | 1691 | XPROCESS (proc)->inherit_coding_system_flag |
aa91317a RS |
1692 | = (NILP (buffer) || !inherit_process_coding_system |
1693 | ? Qnil : Qt); | |
52a1b894 | 1694 | |
6b53bb85 | 1695 | create_process (proc, (char **) new_argv, current_dir); |
d0d6b7c5 | 1696 | |
b0310da4 | 1697 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1698 | } |
1699 | ||
b0310da4 | 1700 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1701 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1702 | an error and the process wasn't started successfully, so we should |
1703 | remove it from the process list. */ | |
1704 | static Lisp_Object | |
1705 | start_process_unwind (proc) | |
1706 | Lisp_Object proc; | |
1707 | { | |
bcd69aea | 1708 | if (!PROCESSP (proc)) |
b0310da4 JB |
1709 | abort (); |
1710 | ||
1711 | /* Was PROC started successfully? */ | |
188d6c4e | 1712 | if (XINT (XPROCESS (proc)->pid) <= 0) |
b0310da4 JB |
1713 | remove_process (proc); |
1714 | ||
1715 | return Qnil; | |
1716 | } | |
1717 | ||
ff6daed3 | 1718 | static void |
30904ab7 GM |
1719 | create_process_1 (timer) |
1720 | struct atimer *timer; | |
d0d6b7c5 | 1721 | { |
30904ab7 | 1722 | /* Nothing to do. */ |
d0d6b7c5 JB |
1723 | } |
1724 | ||
30904ab7 | 1725 | |
d0d6b7c5 JB |
1726 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1727 | #ifdef USG | |
1728 | #ifdef SIGCHLD | |
1729 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1730 | ||
1731 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1732 | int sigchld_deferred; | |
1733 | ||
1734 | SIGTYPE | |
1735 | create_process_sigchld () | |
1736 | { | |
1737 | signal (SIGCHLD, create_process_sigchld); | |
1738 | ||
1739 | sigchld_deferred = 1; | |
1740 | } | |
1741 | #endif | |
1742 | #endif | |
1743 | #endif | |
1744 | ||
1745 | #ifndef VMS /* VMS version of this function is in vmsproc.c. */ | |
6b53bb85 | 1746 | void |
1e30af70 | 1747 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1748 | Lisp_Object process; |
1749 | char **new_argv; | |
1e30af70 | 1750 | Lisp_Object current_dir; |
d0d6b7c5 | 1751 | { |
ecd1f654 | 1752 | int pid, inchannel, outchannel; |
d0d6b7c5 | 1753 | int sv[2]; |
0dc70c33 KH |
1754 | #ifdef POSIX_SIGNALS |
1755 | sigset_t procmask; | |
1756 | sigset_t blocked; | |
1757 | struct sigaction sigint_action; | |
1758 | struct sigaction sigquit_action; | |
1759 | #ifdef AIX | |
1760 | struct sigaction sighup_action; | |
1761 | #endif | |
1762 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1763 | #if 0 |
d0d6b7c5 JB |
1764 | #ifdef SIGCHLD |
1765 | SIGTYPE (*sigchld)(); | |
1766 | #endif | |
41d03b9a | 1767 | #endif /* 0 */ |
0dc70c33 | 1768 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1769 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1770 | volatile int forkin, forkout; | |
1771 | volatile int pty_flag = 0; | |
3ec68006 | 1772 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1773 | extern char **environ; |
3ec68006 | 1774 | #endif |
d0d6b7c5 | 1775 | |
d0d6b7c5 JB |
1776 | inchannel = outchannel = -1; |
1777 | ||
1778 | #ifdef HAVE_PTYS | |
fe45da4e | 1779 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1780 | outchannel = inchannel = allocate_pty (); |
1781 | ||
d0d6b7c5 JB |
1782 | if (inchannel >= 0) |
1783 | { | |
2af70a0c RS |
1784 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1785 | /* On most USG systems it does not work to open the pty's tty here, | |
1786 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1787 | #ifdef O_NOCTTY |
1788 | /* Don't let this terminal become our controlling terminal | |
1789 | (in case we don't have one). */ | |
68c45bf0 | 1790 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1791 | #else |
68c45bf0 | 1792 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1793 | #endif |
1794 | if (forkin < 0) | |
1795 | report_file_error ("Opening pty", Qnil); | |
1796 | #else | |
1797 | forkin = forkout = -1; | |
2af70a0c | 1798 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1799 | pty_flag = 1; |
1800 | } | |
1801 | else | |
1802 | #endif /* HAVE_PTYS */ | |
1803 | #ifdef SKTPAIR | |
1804 | { | |
1805 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv) < 0) | |
1806 | report_file_error ("Opening socketpair", Qnil); | |
1807 | outchannel = inchannel = sv[0]; | |
1808 | forkout = forkin = sv[1]; | |
1809 | } | |
1810 | #else /* not SKTPAIR */ | |
1811 | { | |
fc14013c KH |
1812 | int tem; |
1813 | tem = pipe (sv); | |
1814 | if (tem < 0) | |
1815 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1816 | inchannel = sv[0]; |
1817 | forkout = sv[1]; | |
fc14013c KH |
1818 | tem = pipe (sv); |
1819 | if (tem < 0) | |
1820 | { | |
68c45bf0 PE |
1821 | emacs_close (inchannel); |
1822 | emacs_close (forkout); | |
fc14013c KH |
1823 | report_file_error ("Creating pipe", Qnil); |
1824 | } | |
d0d6b7c5 JB |
1825 | outchannel = sv[1]; |
1826 | forkin = sv[0]; | |
1827 | } | |
1828 | #endif /* not SKTPAIR */ | |
1829 | ||
1830 | #if 0 | |
1831 | /* Replaced by close_process_descs */ | |
1832 | set_exclusive_use (inchannel); | |
1833 | set_exclusive_use (outchannel); | |
1834 | #endif | |
1835 | ||
1836 | /* Stride people say it's a mystery why this is needed | |
1837 | as well as the O_NDELAY, but that it fails without this. */ | |
1838 | #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) | |
1839 | { | |
1840 | int one = 1; | |
1841 | ioctl (inchannel, FIONBIO, &one); | |
1842 | } | |
1843 | #endif | |
1844 | ||
1845 | #ifdef O_NONBLOCK | |
1846 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1847 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1848 | #else |
1849 | #ifdef O_NDELAY | |
1850 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1851 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1852 | #endif |
1853 | #endif | |
1854 | ||
1855 | /* Record this as an active process, with its channels. | |
1856 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1857 | chan_process[inchannel] = process; | |
1d056e64 KH |
1858 | XSETINT (XPROCESS (process)->infd, inchannel); |
1859 | XSETINT (XPROCESS (process)->outfd, outchannel); | |
16782258 JD |
1860 | |
1861 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1862 | It was only used for getting the foreground tty process, so now | |
1863 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1864 | more portable (see USG_SUBTTY_WORKS above). */ | |
1865 | ||
d0d6b7c5 JB |
1866 | XPROCESS (process)->pty_flag = (pty_flag ? Qt : Qnil); |
1867 | XPROCESS (process)->status = Qrun; | |
03f04413 | 1868 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1869 | |
1870 | /* Delay interrupts until we have a chance to store | |
1871 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1872 | #ifdef POSIX_SIGNALS |
1873 | sigemptyset (&blocked); | |
1874 | #ifdef SIGCHLD | |
1875 | sigaddset (&blocked, SIGCHLD); | |
1876 | #endif | |
351e611f | 1877 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1878 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1879 | this sets the parent's signal handlers as well as the child's. | |
1880 | So delay all interrupts whose handlers the child might munge, | |
1881 | and record the current handlers so they can be restored later. */ | |
1882 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1883 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1884 | #ifdef AIX | |
1885 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1886 | #endif | |
351e611f | 1887 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
1888 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
1889 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
1890 | #ifdef SIGCHLD |
1891 | #ifdef BSD4_1 | |
1892 | sighold (SIGCHLD); | |
1893 | #else /* not BSD4_1 */ | |
6df54671 | 1894 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
1895 | sigsetmask (sigmask (SIGCHLD)); |
1896 | #else /* ordinary USG */ | |
1897 | #if 0 | |
1898 | sigchld_deferred = 0; | |
1899 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
1900 | #endif | |
1901 | #endif /* ordinary USG */ | |
1902 | #endif /* not BSD4_1 */ | |
1903 | #endif /* SIGCHLD */ | |
0dc70c33 | 1904 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 1905 | |
3081bf8d | 1906 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1907 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1908 | if (inchannel > max_process_desc) |
1909 | max_process_desc = inchannel; | |
1910 | ||
d0d6b7c5 JB |
1911 | /* Until we store the proper pid, enable sigchld_handler |
1912 | to recognize an unknown pid as standing for this process. | |
1913 | It is very important not to let this `marker' value stay | |
1914 | in the table after this function has returned; if it does | |
1915 | it might cause call-process to hang and subsequent asynchronous | |
1916 | processes to get their return values scrambled. */ | |
1917 | XSETINT (XPROCESS (process)->pid, -1); | |
1918 | ||
ececcbec | 1919 | BLOCK_INPUT; |
177c0ea7 | 1920 | |
d0d6b7c5 JB |
1921 | { |
1922 | /* child_setup must clobber environ on systems with true vfork. | |
1923 | Protect it from permanent change. */ | |
1924 | char **save_environ = environ; | |
1925 | ||
14dc6093 | 1926 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1927 | |
e98d950b | 1928 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1929 | pid = vfork (); |
1930 | if (pid == 0) | |
e98d950b | 1931 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1932 | { |
1933 | int xforkin = forkin; | |
1934 | int xforkout = forkout; | |
1935 | ||
1936 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1937 | but fails to handle all the cases. */ | |
1938 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1939 | sigsetmask (SIGEMPTYMASK); | |
1940 | #endif | |
1941 | ||
1942 | /* Make the pty be the controlling terminal of the process. */ | |
1943 | #ifdef HAVE_PTYS | |
1944 | /* First, disconnect its current controlling terminal. */ | |
1945 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1946 | /* We tried doing setsid only if pty_flag, but it caused |
1947 | process_set_signal to fail on SGI when using a pipe. */ | |
1948 | setsid (); | |
ce4c9c90 | 1949 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 1950 | if (pty_flag) |
39e9ebcd | 1951 | { |
39e9ebcd RS |
1952 | #ifdef TIOCSCTTY |
1953 | /* We ignore the return value | |
1954 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1955 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1956 | #endif |
39e9ebcd | 1957 | } |
d0d6b7c5 | 1958 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1959 | #ifdef USG |
000ab717 | 1960 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1961 | afterwards. Otherwise, we lose our controlling tty which |
1962 | is set when we open the pty. */ | |
1963 | setpgrp (); | |
1964 | #endif /* USG */ | |
1965 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
1966 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
1967 | if (pty_flag && xforkin >= 0) | |
1968 | { | |
1969 | struct termios t; | |
1970 | tcgetattr (xforkin, &t); | |
1971 | t.c_lflag = LDISC1; | |
1972 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1973 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1974 | } |
1975 | #else | |
aafadd9f | 1976 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1977 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1978 | { |
1979 | /* Use new line discipline. */ | |
1980 | int ldisc = NTTYDISC; | |
4458f555 | 1981 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1982 | } |
000ab717 | 1983 | #endif |
9bcf8ec6 | 1984 | #endif |
177c0ea7 | 1985 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1986 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1987 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1988 | if (pty_flag) | |
1989 | { | |
177c0ea7 | 1990 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1991 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1992 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 1993 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 1994 | emacs_close (j); |
5a570e37 | 1995 | #ifndef USG |
d0d6b7c5 JB |
1996 | /* In order to get a controlling terminal on some versions |
1997 | of BSD, it is necessary to put the process in pgrp 0 | |
1998 | before it opens the terminal. */ | |
99c1aeca | 1999 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
2000 | setpgid (0, 0); |
2001 | #else | |
d0d6b7c5 | 2002 | setpgrp (0, 0); |
3ea1d291 | 2003 | #endif |
d0d6b7c5 JB |
2004 | #endif |
2005 | } | |
2006 | #endif /* TIOCNOTTY */ | |
2007 | ||
99153b9e | 2008 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 2009 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
2010 | conditional on TIOCSPGRP, |
2011 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
2012 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
2013 | that system does seem to need this code, even though | |
2014 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
2015 | /* Now close the pty (if we had it open) and reopen it. |
2016 | This makes the pty the controlling terminal of the subprocess. */ | |
2017 | if (pty_flag) | |
2018 | { | |
99e3d726 RS |
2019 | #ifdef SET_CHILD_PTY_PGRP |
2020 | int pgrp = getpid (); | |
2021 | #endif | |
2022 | ||
68c45bf0 PE |
2023 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2024 | would work? */ | |
d0d6b7c5 | 2025 | if (xforkin >= 0) |
68c45bf0 PE |
2026 | emacs_close (xforkin); |
2027 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2028 | |
4aa54ba8 RS |
2029 | if (xforkin < 0) |
2030 | { | |
68c45bf0 PE |
2031 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2032 | emacs_write (1, pty_name, strlen (pty_name)); | |
2033 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2034 | _exit (1); |
2035 | } | |
2036 | ||
99e3d726 RS |
2037 | #ifdef SET_CHILD_PTY_PGRP |
2038 | ioctl (xforkin, TIOCSPGRP, &pgrp); | |
2039 | ioctl (xforkout, TIOCSPGRP, &pgrp); | |
2040 | #endif | |
d0d6b7c5 | 2041 | } |
99153b9e | 2042 | #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */ |
e9bf058b | 2043 | |
d0d6b7c5 | 2044 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2045 | if (pty_flag) |
2046 | { | |
2047 | SETUP_SLAVE_PTY; | |
2048 | } | |
d0d6b7c5 JB |
2049 | #endif /* SETUP_SLAVE_PTY */ |
2050 | #ifdef AIX | |
2051 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2052 | Now reenable it in the child, so it will die when we want it to. */ | |
2053 | if (pty_flag) | |
2054 | signal (SIGHUP, SIG_DFL); | |
2055 | #endif | |
2056 | #endif /* HAVE_PTYS */ | |
2057 | ||
0dc70c33 KH |
2058 | signal (SIGINT, SIG_DFL); |
2059 | signal (SIGQUIT, SIG_DFL); | |
2060 | ||
2061 | /* Stop blocking signals in the child. */ | |
2062 | #ifdef POSIX_SIGNALS | |
2063 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2064 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2065 | #ifdef SIGCHLD |
2066 | #ifdef BSD4_1 | |
2067 | sigrelse (SIGCHLD); | |
2068 | #else /* not BSD4_1 */ | |
6df54671 | 2069 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2070 | sigsetmask (SIGEMPTYMASK); |
2071 | #else /* ordinary USG */ | |
63528b78 | 2072 | #if 0 |
d0d6b7c5 | 2073 | signal (SIGCHLD, sigchld); |
63528b78 | 2074 | #endif |
d0d6b7c5 JB |
2075 | #endif /* ordinary USG */ |
2076 | #endif /* not BSD4_1 */ | |
2077 | #endif /* SIGCHLD */ | |
0dc70c33 | 2078 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2079 | |
ab01d0a8 RS |
2080 | if (pty_flag) |
2081 | child_setup_tty (xforkout); | |
e98d950b RS |
2082 | #ifdef WINDOWSNT |
2083 | pid = child_setup (xforkin, xforkout, xforkout, | |
2084 | new_argv, 1, current_dir); | |
177c0ea7 | 2085 | #else /* not WINDOWSNT */ |
d0d6b7c5 | 2086 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2087 | new_argv, 1, current_dir); |
e98d950b | 2088 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2089 | } |
2090 | environ = save_environ; | |
2091 | } | |
2092 | ||
ececcbec RS |
2093 | UNBLOCK_INPUT; |
2094 | ||
4a127b3b | 2095 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2096 | if (pid < 0) |
6311cf58 RS |
2097 | { |
2098 | if (forkin >= 0) | |
68c45bf0 | 2099 | emacs_close (forkin); |
6311cf58 | 2100 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2101 | emacs_close (forkout); |
6311cf58 | 2102 | } |
4a127b3b KH |
2103 | else |
2104 | { | |
2105 | /* vfork succeeded. */ | |
2106 | XSETFASTINT (XPROCESS (process)->pid, pid); | |
d0d6b7c5 | 2107 | |
e98d950b | 2108 | #ifdef WINDOWSNT |
4a127b3b | 2109 | register_child (pid, inchannel); |
e98d950b RS |
2110 | #endif /* WINDOWSNT */ |
2111 | ||
4a127b3b KH |
2112 | /* If the subfork execv fails, and it exits, |
2113 | this close hangs. I don't know why. | |
2114 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2115 | { |
2116 | struct atimer *timer; | |
2117 | EMACS_TIME offset; | |
177c0ea7 | 2118 | |
30904ab7 GM |
2119 | stop_polling (); |
2120 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2121 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2122 | |
30904ab7 GM |
2123 | if (forkin >= 0) |
2124 | emacs_close (forkin); | |
2125 | ||
2126 | cancel_atimer (timer); | |
2127 | start_polling (); | |
2128 | } | |
177c0ea7 | 2129 | |
4a127b3b | 2130 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2131 | emacs_close (forkout); |
d0d6b7c5 | 2132 | |
875e6b94 | 2133 | #ifdef HAVE_PTYS |
4a127b3b KH |
2134 | if (pty_flag) |
2135 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2136 | else | |
875e6b94 | 2137 | #endif |
4a127b3b KH |
2138 | XPROCESS (process)->tty_name = Qnil; |
2139 | } | |
3b9a3dfa | 2140 | |
4a127b3b KH |
2141 | /* Restore the signal state whether vfork succeeded or not. |
2142 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2143 | #ifdef POSIX_SIGNALS |
351e611f | 2144 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2145 | /* Restore the parent's signal handlers. */ |
2146 | sigaction (SIGINT, &sigint_action, 0); | |
2147 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2148 | #ifdef AIX | |
2149 | sigaction (SIGHUP, &sighup_action, 0); | |
2150 | #endif | |
351e611f | 2151 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2152 | /* Stop blocking signals in the parent. */ |
2153 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2154 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2155 | #ifdef SIGCHLD |
2156 | #ifdef BSD4_1 | |
2157 | sigrelse (SIGCHLD); | |
2158 | #else /* not BSD4_1 */ | |
6df54671 | 2159 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2160 | sigsetmask (SIGEMPTYMASK); |
2161 | #else /* ordinary USG */ | |
2162 | #if 0 | |
2163 | signal (SIGCHLD, sigchld); | |
2164 | /* Now really handle any of these signals | |
2165 | that came in during this function. */ | |
2166 | if (sigchld_deferred) | |
2167 | kill (getpid (), SIGCHLD); | |
2168 | #endif | |
2169 | #endif /* ordinary USG */ | |
2170 | #endif /* not BSD4_1 */ | |
2171 | #endif /* SIGCHLD */ | |
0dc70c33 | 2172 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2173 | |
2174 | /* Now generate the error if vfork failed. */ | |
2175 | if (pid < 0) | |
2176 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 JB |
2177 | } |
2178 | #endif /* not VMS */ | |
2179 | ||
e690ca94 | 2180 | \f |
d0d6b7c5 JB |
2181 | #ifdef HAVE_SOCKETS |
2182 | ||
e690ca94 KS |
2183 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2184 | The address family of sa is not included in the result. */ | |
2185 | ||
2186 | static Lisp_Object | |
2187 | conv_sockaddr_to_lisp (sa, len) | |
2188 | struct sockaddr *sa; | |
2189 | int len; | |
2190 | { | |
2191 | Lisp_Object address; | |
2192 | int i; | |
2193 | unsigned char *cp; | |
2194 | register struct Lisp_Vector *p; | |
2195 | ||
2196 | switch (sa->sa_family) | |
2197 | { | |
2198 | case AF_INET: | |
2199 | { | |
2200 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2201 | len = sizeof (sin->sin_addr) + 1; | |
2202 | address = Fmake_vector (make_number (len), Qnil); | |
2203 | p = XVECTOR (address); | |
2204 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
2205 | cp = (unsigned char *)&sin->sin_addr; | |
2206 | break; | |
2207 | } | |
2208 | #ifdef HAVE_LOCAL_SOCKETS | |
2209 | case AF_LOCAL: | |
2210 | { | |
fb23673a EZ |
2211 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2212 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2213 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2214 | break; |
fb23673a | 2215 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2216 | } |
2217 | #endif | |
2218 | default: | |
2219 | len -= sizeof (sa->sa_family); | |
2220 | address = Fcons (make_number (sa->sa_family), | |
2221 | Fmake_vector (make_number (len), Qnil)); | |
2222 | p = XVECTOR (XCDR (address)); | |
2223 | cp = (unsigned char *) sa + sizeof (sa->sa_family); | |
2224 | break; | |
2225 | } | |
2226 | ||
2227 | i = 0; | |
2228 | while (i < len) | |
2229 | p->contents[i++] = make_number (*cp++); | |
2230 | ||
2231 | return address; | |
2232 | } | |
2233 | ||
2234 | ||
2235 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2236 | ||
2237 | static int | |
2238 | get_lisp_to_sockaddr_size (address, familyp) | |
2239 | Lisp_Object address; | |
2240 | int *familyp; | |
2241 | { | |
2242 | register struct Lisp_Vector *p; | |
2243 | ||
2244 | if (VECTORP (address)) | |
2245 | { | |
2246 | p = XVECTOR (address); | |
2247 | if (p->size == 5) | |
2248 | { | |
2249 | *familyp = AF_INET; | |
2250 | return sizeof (struct sockaddr_in); | |
2251 | } | |
2252 | } | |
2253 | #ifdef HAVE_LOCAL_SOCKETS | |
2254 | else if (STRINGP (address)) | |
2255 | { | |
2256 | *familyp = AF_LOCAL; | |
2257 | return sizeof (struct sockaddr_un); | |
2258 | } | |
2259 | #endif | |
2260 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2261 | { | |
2262 | struct sockaddr *sa; | |
2263 | *familyp = XINT (XCAR (address)); | |
2264 | p = XVECTOR (XCDR (address)); | |
2265 | return p->size + sizeof (sa->sa_family); | |
2266 | } | |
2267 | return 0; | |
2268 | } | |
2269 | ||
2270 | /* Convert an address object (vector or string) to an internal sockaddr. | |
2271 | Format of address has already been validated by size_lisp_to_sockaddr. */ | |
2272 | ||
2273 | static void | |
2274 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2275 | int family; | |
2276 | Lisp_Object address; | |
2277 | struct sockaddr *sa; | |
2278 | int len; | |
2279 | { | |
2280 | register struct Lisp_Vector *p; | |
34967d0f | 2281 | register unsigned char *cp = NULL; |
e690ca94 KS |
2282 | register int i; |
2283 | ||
2284 | bzero (sa, len); | |
2285 | sa->sa_family = family; | |
2286 | ||
2287 | if (VECTORP (address)) | |
2288 | { | |
2289 | p = XVECTOR (address); | |
2290 | if (family == AF_INET) | |
2291 | { | |
2292 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2293 | len = sizeof (sin->sin_addr) + 1; | |
2294 | i = XINT (p->contents[--len]); | |
2295 | sin->sin_port = htons (i); | |
2296 | cp = (unsigned char *)&sin->sin_addr; | |
2297 | } | |
2298 | } | |
2299 | else if (STRINGP (address)) | |
2300 | { | |
2301 | #ifdef HAVE_LOCAL_SOCKETS | |
2302 | if (family == AF_LOCAL) | |
2303 | { | |
fb23673a | 2304 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2305 | cp = SDATA (address); |
fb23673a EZ |
2306 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2307 | sockun->sun_path[i] = *cp++; | |
e690ca94 KS |
2308 | } |
2309 | #endif | |
2310 | return; | |
2311 | } | |
2312 | else | |
2313 | { | |
2314 | p = XVECTOR (XCDR (address)); | |
2315 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2316 | } | |
2317 | ||
2318 | for (i = 0; i < len; i++) | |
2319 | if (INTEGERP (p->contents[i])) | |
2320 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2321 | } | |
2322 | ||
2323 | #ifdef DATAGRAM_SOCKETS | |
2324 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2325 | 1, 1, 0, | |
2326 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2327 | (process) | |
2328 | Lisp_Object process; | |
2329 | { | |
2330 | int channel; | |
2331 | ||
2332 | CHECK_PROCESS (process); | |
2333 | ||
2334 | if (!DATAGRAM_CONN_P (process)) | |
2335 | return Qnil; | |
2336 | ||
bed9664a | 2337 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2338 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2339 | datagram_address[channel].len); | |
2340 | } | |
2341 | ||
2342 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2343 | 2, 2, 0, | |
2344 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2345 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2346 | (process, address) | |
2347 | Lisp_Object process, address; | |
2348 | { | |
2349 | int channel; | |
2350 | int family, len; | |
2351 | ||
2352 | CHECK_PROCESS (process); | |
2353 | ||
2354 | if (!DATAGRAM_CONN_P (process)) | |
2355 | return Qnil; | |
2356 | ||
bed9664a | 2357 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2358 | |
2359 | len = get_lisp_to_sockaddr_size (address, &family); | |
2360 | if (datagram_address[channel].len != len) | |
2361 | return Qnil; | |
2362 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2363 | return address; | |
2364 | } | |
2365 | #endif | |
2366 | \f | |
2367 | ||
2368 | static struct socket_options { | |
2369 | /* The name of this option. Should be lowercase version of option | |
177c0ea7 | 2370 | name without SO_ prefix. */ |
e690ca94 | 2371 | char *name; |
e690ca94 KS |
2372 | /* Option level SOL_... */ |
2373 | int optlevel; | |
2374 | /* Option number SO_... */ | |
2375 | int optnum; | |
151ec9e2 | 2376 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2ccf3102 | 2377 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; |
e690ca94 KS |
2378 | } socket_options[] = |
2379 | { | |
2380 | #ifdef SO_BINDTODEVICE | |
151ec9e2 | 2381 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2382 | #endif |
2383 | #ifdef SO_BROADCAST | |
2ccf3102 | 2384 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2385 | #endif |
2386 | #ifdef SO_DONTROUTE | |
2ccf3102 | 2387 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2388 | #endif |
2389 | #ifdef SO_KEEPALIVE | |
2ccf3102 | 2390 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2391 | #endif |
2392 | #ifdef SO_LINGER | |
2ccf3102 | 2393 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2394 | #endif |
2395 | #ifdef SO_OOBINLINE | |
2ccf3102 | 2396 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2397 | #endif |
2398 | #ifdef SO_PRIORITY | |
2ccf3102 | 2399 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2400 | #endif |
2401 | #ifdef SO_REUSEADDR | |
2ccf3102 | 2402 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2403 | #endif |
2ccf3102 | 2404 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2405 | }; |
2406 | ||
2ccf3102 | 2407 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2408 | |
2ccf3102 KS |
2409 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2410 | Signals an error if setting a known option fails. | |
2411 | */ | |
e690ca94 KS |
2412 | |
2413 | static int | |
2ccf3102 | 2414 | set_socket_option (s, opt, val) |
e690ca94 | 2415 | int s; |
2ccf3102 | 2416 | Lisp_Object opt, val; |
e690ca94 | 2417 | { |
2ccf3102 KS |
2418 | char *name; |
2419 | struct socket_options *sopt; | |
2420 | int ret = 0; | |
e690ca94 | 2421 | |
2ccf3102 | 2422 | CHECK_SYMBOL (opt); |
e690ca94 | 2423 | |
2ccf3102 KS |
2424 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2425 | for (sopt = socket_options; sopt->name; sopt++) | |
2426 | if (strcmp (name, sopt->name) == 0) | |
2427 | break; | |
e690ca94 | 2428 | |
2ccf3102 KS |
2429 | switch (sopt->opttype) |
2430 | { | |
2431 | case SOPT_BOOL: | |
2432 | { | |
2433 | int optval; | |
2434 | optval = NILP (val) ? 0 : 1; | |
2435 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2436 | &optval, sizeof (optval)); | |
2437 | break; | |
2438 | } | |
e690ca94 | 2439 | |
2ccf3102 KS |
2440 | case SOPT_INT: |
2441 | { | |
2442 | int optval; | |
2443 | if (INTEGERP (val)) | |
2444 | optval = XINT (val); | |
2445 | else | |
2446 | error ("Bad option value for %s", name); | |
2447 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2448 | &optval, sizeof (optval)); | |
2449 | break; | |
2450 | } | |
e690ca94 | 2451 | |
151ec9e2 KS |
2452 | #ifdef SO_BINDTODEVICE |
2453 | case SOPT_IFNAME: | |
2ccf3102 | 2454 | { |
151ec9e2 KS |
2455 | char devname[IFNAMSIZ+1]; |
2456 | ||
2457 | /* This is broken, at least in the Linux 2.4 kernel. | |
2458 | To unbind, the arg must be a zero integer, not the empty string. | |
2459 | This should work on all systems. KFS. 2003-09-23. */ | |
2460 | bzero (devname, sizeof devname); | |
2461 | if (STRINGP (val)) | |
2462 | { | |
2463 | char *arg = (char *) SDATA (val); | |
2464 | int len = min (strlen (arg), IFNAMSIZ); | |
2465 | bcopy (arg, devname, len); | |
2466 | } | |
2467 | else if (!NILP (val)) | |
2ccf3102 KS |
2468 | error ("Bad option value for %s", name); |
2469 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
151ec9e2 KS |
2470 | devname, IFNAMSIZ); |
2471 | break; | |
2ccf3102 | 2472 | } |
151ec9e2 | 2473 | #endif |
e690ca94 | 2474 | |
177c0ea7 | 2475 | #ifdef SO_LINGER |
2ccf3102 KS |
2476 | case SOPT_LINGER: |
2477 | { | |
2478 | struct linger linger; | |
e690ca94 | 2479 | |
2ccf3102 KS |
2480 | linger.l_onoff = 1; |
2481 | linger.l_linger = 0; | |
2482 | if (INTEGERP (val)) | |
2483 | linger.l_linger = XINT (val); | |
2484 | else | |
2485 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2486 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2487 | &linger, sizeof (linger)); | |
2488 | break; | |
2489 | } | |
e690ca94 | 2490 | #endif |
2ccf3102 KS |
2491 | |
2492 | default: | |
2493 | return 0; | |
e690ca94 | 2494 | } |
2ccf3102 KS |
2495 | |
2496 | if (ret < 0) | |
2497 | report_file_error ("Cannot set network option", | |
2498 | Fcons (opt, Fcons (val, Qnil))); | |
2499 | return (1 << sopt->optbit); | |
e690ca94 KS |
2500 | } |
2501 | ||
2ccf3102 KS |
2502 | |
2503 | DEFUN ("set-network-process-option", | |
2504 | Fset_network_process_option, Sset_network_process_option, | |
2505 | 3, 4, 0, | |
2506 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2507 | See `make-network-process' for a list of options and values. | |
2508 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2509 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2510 | (process, option, value, no_error) | |
2511 | Lisp_Object process, option, value; | |
2512 | Lisp_Object no_error; | |
e690ca94 | 2513 | { |
e1283999 | 2514 | int s; |
151ec9e2 | 2515 | struct Lisp_Process *p; |
e690ca94 | 2516 | |
e690ca94 | 2517 | CHECK_PROCESS (process); |
151ec9e2 KS |
2518 | p = XPROCESS (process); |
2519 | if (!NETCONN1_P (p)) | |
2520 | error ("Process is not a network process"); | |
2ccf3102 | 2521 | |
151ec9e2 | 2522 | s = XINT (p->infd); |
2ccf3102 KS |
2523 | if (s < 0) |
2524 | error ("Process is not running"); | |
2525 | ||
2526 | if (set_socket_option (s, option, value)) | |
151ec9e2 KS |
2527 | { |
2528 | p->childp = Fplist_put (p->childp, option, value); | |
2529 | return Qt; | |
2530 | } | |
2ccf3102 KS |
2531 | |
2532 | if (NILP (no_error)) | |
2533 | error ("Unknown or unsupported option"); | |
2534 | ||
2535 | return Qnil; | |
e690ca94 | 2536 | } |
2ccf3102 | 2537 | |
e690ca94 | 2538 | \f |
e690ca94 KS |
2539 | /* A version of request_sigio suitable for a record_unwind_protect. */ |
2540 | ||
ff6daed3 | 2541 | static Lisp_Object |
e690ca94 KS |
2542 | unwind_request_sigio (dummy) |
2543 | Lisp_Object dummy; | |
2544 | { | |
2545 | if (interrupt_input) | |
2546 | request_sigio (); | |
2547 | return Qnil; | |
2548 | } | |
2549 | ||
2550 | /* Create a network stream/datagram client/server process. Treated | |
2551 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2552 | differences are in status display and process deletion. A network |
2553 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2554 | stop/continue it and deactivate/close it via delete-process */ |
2555 | ||
177c0ea7 JB |
2556 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2557 | 0, MANY, 0, | |
e690ca94 KS |
2558 | doc: /* Create and return a network server or client process. |
2559 | ||
fa9d4315 | 2560 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2561 | input and output work as for subprocesses and `delete-process' closes |
2562 | a network connection. However, a network process has no process id, | |
d22426e1 | 2563 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2564 | processes. |
2565 | ||
2566 | Arguments are specified as keyword/argument pairs. The following | |
2567 | arguments are defined: | |
2568 | ||
2569 | :name NAME -- NAME is name for process. It is modified if necessary | |
2570 | to make it unique. | |
2571 | ||
2572 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2573 | with the process. Process output goes at end of that buffer, unless | |
2574 | you specify an output stream or filter function to handle the output. | |
2575 | BUFFER may be also nil, meaning that this process is not associated | |
2576 | with any buffer. | |
2577 | ||
2578 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2579 | address. The symbol `local' specifies the local host. If specified | |
2580 | for a server process, it must be a valid name or address for the local | |
2581 | host, and only clients connecting to that address will be accepted. | |
2582 | ||
2583 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2584 | integer specifying a port number to connect to. If SERVICE is t, | |
2585 | a random port number is selected for the server. | |
2586 | ||
9057ff80 KS |
2587 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
2588 | stream type connection, `datagram' creates a datagram type connection. | |
2589 | ||
e690ca94 KS |
2590 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
2591 | service specified by HOST and SERVICE. The default address family is | |
2592 | Inet (or IPv4) for the host and port number specified by HOST and | |
2593 | SERVICE. Other address families supported are: | |
2594 | local -- for a local (i.e. UNIX) address specified by SERVICE. | |
2595 | ||
2596 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2597 | This parameter is ignored when opening a client process. When specified | |
2598 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2599 | ||
2600 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2601 | connection. This parameter is ignored when opening a stream server | |
2602 | process. For a datagram server process, it specifies the initial | |
2603 | setting of the remote datagram address. When specified for a client | |
2604 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2605 | ||
2606 | The format of ADDRESS depends on the address family: | |
2607 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2608 | corresponding to numeric IP address A.B.C.D and port number P. | |
2609 | - A local address is represented as a string with the address in the | |
2610 | local address space. | |
2611 | - An "unsupported family" address is represented by a cons (F . AV) | |
2612 | where F is the family number and AV is a vector containing the socket | |
2613 | address data with one element per address data byte. Do not rely on | |
2614 | this format in portable code, as it may depend on implementation | |
2615 | defined constants, data sizes, and data structure alignment. | |
2616 | ||
2ccf3102 KS |
2617 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2618 | system used for both reading and writing for this process. If CODING | |
2619 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2620 | ENCODING is used for writing. | |
e690ca94 KS |
2621 | |
2622 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2623 | return without waiting for the connection to complete; instead, the | |
2624 | sentinel function will be called with second arg matching "open" (if | |
2625 | successful) or "failed" when the connect completes. Default is to use | |
2626 | a blocking connect (i.e. wait) for stream type connections. | |
2627 | ||
2628 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2629 | running when Emacs is exited. |
e690ca94 KS |
2630 | |
2631 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2632 | In the stopped state, a server process does not accept new | |
2633 | connections, and a client process does not handle incoming traffic. | |
2634 | The stopped state is cleared by `continue-process' and set by | |
2635 | `stop-process'. | |
2636 | ||
2637 | :filter FILTER -- Install FILTER as the process filter. | |
2638 | ||
7392e23c KS |
2639 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2640 | process filter are multibyte, otherwise they are unibyte. | |
2641 | If this keyword is not specified, the strings are multibyte iff | |
03f04413 KH |
2642 | `default-enable-multibyte-characters' is non-nil. |
2643 | ||
e690ca94 KS |
2644 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2645 | ||
2646 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2647 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2648 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2649 | is the server process, CLIENT is the new process for the connection, | |
2650 | and MESSAGE is a string. | |
2651 | ||
faa7db08 | 2652 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2653 | |
2ccf3102 | 2654 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2655 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
2ccf3102 KS |
2656 | If QLEN is an integer, it is used as the max. length of the server's |
2657 | pending connection queue (also known as the backlog); the default | |
2658 | queue length is 5. Default is to create a client process. | |
2659 | ||
2660 | The following network options can be specified for this connection: | |
2661 | ||
2ccf3102 KS |
2662 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. |
2663 | :dontroute BOOL -- Only send to directly connected hosts. | |
2664 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2665 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2666 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2667 | :priority INT -- Set protocol defined priority for sent packets. | |
2668 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2669 | (this is allowed by default for a server process). | |
151ec9e2 KS |
2670 | :bindtodevice NAME -- bind to interface NAME. Using this may require |
2671 | special privileges on some systems. | |
2ccf3102 KS |
2672 | |
2673 | Consult the relevant system programmer's manual pages for more | |
2674 | information on using these options. | |
2675 | ||
2676 | ||
2677 | A server process will listen for and accept connections from clients. | |
2678 | When a client connection is accepted, a new network process is created | |
2679 | for the connection with the following parameters: | |
e690ca94 | 2680 | |
e690ca94 KS |
2681 | - The client's process name is constructed by concatenating the server |
2682 | process' NAME and a client identification string. | |
2683 | - If the FILTER argument is non-nil, the client process will not get a | |
2684 | separate process buffer; otherwise, the client's process buffer is a newly | |
2685 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2686 | NAME concatenated with the client identification string. |
e690ca94 KS |
2687 | - The connection type and the process filter and sentinel parameters are |
2688 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2689 | - The client process' contact info is set according to the client's | |
2690 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2691 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2692 | |
2693 | Notice that the FILTER and SENTINEL args are never used directly by | |
2694 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2695 | the server process, but via the optional :log function, accepted (and |
2696 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2697 | |
365aee82 KS |
2698 | The original argument list, modified with the actual connection |
2699 | information, is available via the `process-contact' function. | |
365aee82 | 2700 | |
fa9d4315 | 2701 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
2702 | (nargs, args) |
2703 | int nargs; | |
2704 | Lisp_Object *args; | |
d0d6b7c5 JB |
2705 | { |
2706 | Lisp_Object proc; | |
e690ca94 KS |
2707 | Lisp_Object contact; |
2708 | struct Lisp_Process *p; | |
70dbdb36 | 2709 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2710 | struct addrinfo ai, *res, *lres; |
2711 | struct addrinfo hints; | |
2712 | char *portstring, portbuf[128]; | |
70dbdb36 | 2713 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2714 | struct _emacs_addrinfo |
2715 | { | |
2716 | int ai_family; | |
2717 | int ai_socktype; | |
2718 | int ai_protocol; | |
2719 | int ai_addrlen; | |
2720 | struct sockaddr *ai_addr; | |
2721 | struct _emacs_addrinfo *ai_next; | |
2722 | } ai, *res, *lres; | |
418b48fd | 2723 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2724 | struct sockaddr_in address_in; |
2725 | #ifdef HAVE_LOCAL_SOCKETS | |
2726 | struct sockaddr_un address_un; | |
2727 | #endif | |
2728 | int port; | |
dd2a17ab KS |
2729 | int ret = 0; |
2730 | int xerrno = 0; | |
418b48fd | 2731 | int s = -1, outch, inch; |
e690ca94 | 2732 | struct gcpro gcpro1; |
aed13378 | 2733 | int count = SPECPDL_INDEX (); |
5684cd6e | 2734 | int count1; |
e690ca94 KS |
2735 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2736 | Lisp_Object tem; | |
2737 | Lisp_Object name, buffer, host, service, address; | |
2738 | Lisp_Object filter, sentinel; | |
2739 | int is_non_blocking_client = 0; | |
2ccf3102 | 2740 | int is_server = 0, backlog = 5; |
9057ff80 | 2741 | int socktype; |
e690ca94 KS |
2742 | int family = -1; |
2743 | ||
2744 | if (nargs == 0) | |
2745 | return Qnil; | |
dd2a17ab | 2746 | |
e690ca94 KS |
2747 | /* Save arguments for process-contact and clone-process. */ |
2748 | contact = Flist (nargs, args); | |
2749 | GCPRO1 (contact); | |
2750 | ||
bff3ed0a RS |
2751 | #ifdef WINDOWSNT |
2752 | /* Ensure socket support is loaded if available. */ | |
2753 | init_winsock (TRUE); | |
2754 | #endif | |
2755 | ||
9057ff80 KS |
2756 | /* :type TYPE (nil: stream, datagram */ |
2757 | tem = Fplist_get (contact, QCtype); | |
2758 | if (NILP (tem)) | |
2759 | socktype = SOCK_STREAM; | |
2760 | #ifdef DATAGRAM_SOCKETS | |
2761 | else if (EQ (tem, Qdatagram)) | |
2762 | socktype = SOCK_DGRAM; | |
e690ca94 | 2763 | #endif |
9057ff80 KS |
2764 | else |
2765 | error ("Unsupported connection type"); | |
e690ca94 KS |
2766 | |
2767 | /* :server BOOL */ | |
2768 | tem = Fplist_get (contact, QCserver); | |
2769 | if (!NILP (tem)) | |
2770 | { | |
75728599 JR |
2771 | /* Don't support network sockets when non-blocking mode is |
2772 | not available, since a blocked Emacs is not useful. */ | |
2773 | #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY)) | |
e690ca94 KS |
2774 | error ("Network servers not supported"); |
2775 | #else | |
2776 | is_server = 1; | |
2ccf3102 KS |
2777 | if (INTEGERP (tem)) |
2778 | backlog = XINT (tem); | |
e690ca94 KS |
2779 | #endif |
2780 | } | |
2781 | ||
2782 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2783 | QCaddress = is_server ? QClocal : QCremote; | |
2784 | ||
2785 | /* :wait BOOL */ | |
2786 | if (!is_server && socktype == SOCK_STREAM | |
2787 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) | |
2788 | { | |
2789 | #ifndef NON_BLOCKING_CONNECT | |
2790 | error ("Non-blocking connect not supported"); | |
2791 | #else | |
2792 | is_non_blocking_client = 1; | |
2793 | #endif | |
2794 | } | |
2795 | ||
2796 | name = Fplist_get (contact, QCname); | |
2797 | buffer = Fplist_get (contact, QCbuffer); | |
2798 | filter = Fplist_get (contact, QCfilter); | |
2799 | sentinel = Fplist_get (contact, QCsentinel); | |
2800 | ||
b7826503 | 2801 | CHECK_STRING (name); |
e690ca94 KS |
2802 | |
2803 | #ifdef TERM | |
2804 | /* Let's handle TERM before things get complicated ... */ | |
2805 | host = Fplist_get (contact, QChost); | |
b7826503 | 2806 | CHECK_STRING (host); |
177c0ea7 | 2807 | |
e690ca94 KS |
2808 | service = Fplist_get (contact, QCservice); |
2809 | if (INTEGERP (service)) | |
2810 | port = htons ((unsigned short) XINT (service)); | |
2811 | else | |
2812 | { | |
2813 | struct servent *svc_info; | |
2814 | CHECK_STRING (service); | |
d5db4077 | 2815 | svc_info = getservbyname (SDATA (service), "tcp"); |
e690ca94 | 2816 | if (svc_info == 0) |
d5db4077 | 2817 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2818 | port = svc_info->s_port; |
2819 | } | |
2820 | ||
2821 | s = connect_server (0); | |
2822 | if (s < 0) | |
2823 | report_file_error ("error creating socket", Fcons (name, Qnil)); | |
d5db4077 | 2824 | send_command (s, C_PORT, 0, "%s:%d", SDATA (host), ntohs (port)); |
e690ca94 KS |
2825 | send_command (s, C_DUMB, 1, 0); |
2826 | ||
2827 | #else /* not TERM */ | |
2828 | ||
2829 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ | |
2830 | ai.ai_socktype = socktype; | |
2831 | ai.ai_protocol = 0; | |
2832 | ai.ai_next = NULL; | |
2833 | res = &ai; | |
a319f7c1 | 2834 | |
e690ca94 KS |
2835 | /* :local ADDRESS or :remote ADDRESS */ |
2836 | address = Fplist_get (contact, QCaddress); | |
2837 | if (!NILP (address)) | |
a319f7c1 | 2838 | { |
e690ca94 KS |
2839 | host = service = Qnil; |
2840 | ||
2841 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2842 | error ("Malformed :address"); | |
2843 | ai.ai_family = family; | |
2844 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2845 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2846 | goto open_socket; | |
a319f7c1 | 2847 | } |
e690ca94 KS |
2848 | |
2849 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2850 | tem = Fplist_get (contact, QCfamily); | |
2851 | if (INTEGERP (tem)) | |
2852 | family = XINT (tem); | |
a319f7c1 KH |
2853 | else |
2854 | { | |
e690ca94 KS |
2855 | if (NILP (tem)) |
2856 | family = AF_INET; | |
2857 | #ifdef HAVE_LOCAL_SOCKETS | |
2858 | else if (EQ (tem, Qlocal)) | |
2859 | family = AF_LOCAL; | |
2860 | #endif | |
a319f7c1 | 2861 | } |
e690ca94 KS |
2862 | if (family < 0) |
2863 | error ("Unknown address family"); | |
2864 | ai.ai_family = family; | |
2865 | ||
2866 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2867 | service = Fplist_get (contact, QCservice); | |
2868 | ||
2869 | #ifdef HAVE_LOCAL_SOCKETS | |
2870 | if (family == AF_LOCAL) | |
d0d6b7c5 | 2871 | { |
e690ca94 KS |
2872 | /* Host is not used. */ |
2873 | host = Qnil; | |
b7826503 | 2874 | CHECK_STRING (service); |
e690ca94 KS |
2875 | bzero (&address_un, sizeof address_un); |
2876 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 2877 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
2878 | ai.ai_addr = (struct sockaddr *) &address_un; |
2879 | ai.ai_addrlen = sizeof address_un; | |
2880 | goto open_socket; | |
d0d6b7c5 | 2881 | } |
e690ca94 | 2882 | #endif |
a319f7c1 | 2883 | |
e690ca94 KS |
2884 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
2885 | host = Fplist_get (contact, QChost); | |
2886 | if (!NILP (host)) | |
2887 | { | |
2888 | if (EQ (host, Qlocal)) | |
2889 | host = build_string ("localhost"); | |
2890 | CHECK_STRING (host); | |
2891 | } | |
d0d6b7c5 | 2892 | |
798b64bb KH |
2893 | /* Slow down polling to every ten seconds. |
2894 | Some kernels have a bug which causes retrying connect to fail | |
2895 | after a connect. Polling can interfere with gethostbyname too. */ | |
2896 | #ifdef POLL_FOR_INPUT | |
e690ca94 KS |
2897 | if (socktype == SOCK_STREAM) |
2898 | { | |
2899 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
2900 | bind_polling_period (10); | |
2901 | } | |
798b64bb KH |
2902 | #endif |
2903 | ||
a319f7c1 | 2904 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2905 | /* If we have a host, use getaddrinfo to resolve both host and service. |
2906 | Otherwise, use getservbyname to lookup the service. */ | |
2907 | if (!NILP (host)) | |
2908 | { | |
2909 | ||
2910 | /* SERVICE can either be a string or int. | |
2911 | Convert to a C string for later use by getaddrinfo. */ | |
2912 | if (EQ (service, Qt)) | |
2913 | portstring = "0"; | |
2914 | else if (INTEGERP (service)) | |
2915 | { | |
2916 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
2917 | portstring = portbuf; | |
2918 | } | |
2919 | else | |
2920 | { | |
2921 | CHECK_STRING (service); | |
d5db4077 | 2922 | portstring = SDATA (service); |
e690ca94 KS |
2923 | } |
2924 | ||
2925 | immediate_quit = 1; | |
2926 | QUIT; | |
2927 | memset (&hints, 0, sizeof (hints)); | |
2928 | hints.ai_flags = 0; | |
2929 | hints.ai_family = NILP (Fplist_member (contact, QCfamily)) ? AF_UNSPEC : family; | |
2930 | hints.ai_socktype = socktype; | |
2931 | hints.ai_protocol = 0; | |
d5db4077 | 2932 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 2933 | if (ret) |
f6270f62 | 2934 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 2935 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 2936 | #else |
d5db4077 | 2937 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 2938 | #endif |
e690ca94 | 2939 | immediate_quit = 0; |
a319f7c1 | 2940 | |
e690ca94 KS |
2941 | goto open_socket; |
2942 | } | |
2943 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 2944 | |
e690ca94 KS |
2945 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
2946 | has been specified (e.g. for a local server process). */ | |
2947 | ||
2948 | if (EQ (service, Qt)) | |
2949 | port = 0; | |
2950 | else if (INTEGERP (service)) | |
2951 | port = htons ((unsigned short) XINT (service)); | |
2952 | else | |
616da37c | 2953 | { |
e690ca94 KS |
2954 | struct servent *svc_info; |
2955 | CHECK_STRING (service); | |
177c0ea7 | 2956 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
2957 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
2958 | if (svc_info == 0) | |
d5db4077 | 2959 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2960 | port = svc_info->s_port; |
2961 | } | |
2962 | ||
2963 | bzero (&address_in, sizeof address_in); | |
2964 | address_in.sin_family = family; | |
2965 | address_in.sin_addr.s_addr = INADDR_ANY; | |
2966 | address_in.sin_port = port; | |
2967 | ||
2968 | #ifndef HAVE_GETADDRINFO | |
2969 | if (!NILP (host)) | |
2970 | { | |
2971 | struct hostent *host_info_ptr; | |
2972 | ||
2973 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 2974 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
2975 | immediate_quit = 1; |
2976 | QUIT; | |
d5db4077 | 2977 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 2978 | immediate_quit = 0; |
177c0ea7 | 2979 | |
e690ca94 KS |
2980 | if (host_info_ptr) |
2981 | { | |
2982 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
2983 | host_info_ptr->h_length); | |
2984 | family = host_info_ptr->h_addrtype; | |
2985 | address_in.sin_family = family; | |
2986 | } | |
2987 | else | |
2988 | /* Attempt to interpret host as numeric inet address */ | |
2989 | { | |
2990 | IN_ADDR numeric_addr; | |
d5db4077 | 2991 | numeric_addr = inet_addr ((char *) SDATA (host)); |
e690ca94 | 2992 | if (NUMERIC_ADDR_ERROR) |
d5db4077 | 2993 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 2994 | |
e690ca94 KS |
2995 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
2996 | sizeof (address_in.sin_addr)); | |
2997 | } | |
d0d6b7c5 | 2998 | |
e690ca94 | 2999 | } |
dd2a17ab | 3000 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3001 | |
e690ca94 KS |
3002 | ai.ai_family = family; |
3003 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3004 | ai.ai_addrlen = sizeof address_in; | |
3005 | ||
3006 | open_socket: | |
3007 | ||
3008 | /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR) | |
3009 | when connect is interrupted. So let's not let it get interrupted. | |
3010 | Note we do not turn off polling, because polling is only used | |
3011 | when not interrupt_input, and thus not normally used on the systems | |
3012 | which have this bug. On systems which use polling, there's no way | |
3013 | to quit if polling is turned off. */ | |
3014 | if (interrupt_input | |
3015 | && !is_server && socktype == SOCK_STREAM) | |
3016 | { | |
3017 | /* Comment from KFS: The original open-network-stream code | |
3018 | didn't unwind protect this, but it seems like the proper | |
3019 | thing to do. In any case, I don't see how it could harm to | |
3020 | do this -- and it makes cleanup (using unbind_to) easier. */ | |
3021 | record_unwind_protect (unwind_request_sigio, Qnil); | |
3022 | unrequest_sigio (); | |
3023 | } | |
3024 | ||
dd2a17ab | 3025 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3026 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3027 | s = -1; |
457a9bee | 3028 | |
dd2a17ab KS |
3029 | for (lres = res; lres; lres = lres->ai_next) |
3030 | { | |
2ccf3102 KS |
3031 | int optn, optbits; |
3032 | ||
4e9dd03b KS |
3033 | retry_connect: |
3034 | ||
dd2a17ab KS |
3035 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3036 | if (s < 0) | |
3037 | { | |
3038 | xerrno = errno; | |
3039 | continue; | |
3040 | } | |
0f2ee0c1 | 3041 | |
e690ca94 KS |
3042 | #ifdef DATAGRAM_SOCKETS |
3043 | if (!is_server && socktype == SOCK_DGRAM) | |
3044 | break; | |
3045 | #endif /* DATAGRAM_SOCKETS */ | |
3046 | ||
dd2a17ab | 3047 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3048 | if (is_non_blocking_client) |
dd2a17ab KS |
3049 | { |
3050 | #ifdef O_NONBLOCK | |
3051 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3052 | #else | |
3053 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3054 | #endif | |
3055 | if (ret < 0) | |
3056 | { | |
3057 | xerrno = errno; | |
3058 | emacs_close (s); | |
3059 | s = -1; | |
3060 | continue; | |
3061 | } | |
3062 | } | |
3063 | #endif | |
177c0ea7 | 3064 | |
dd2a17ab | 3065 | /* Make us close S if quit. */ |
dd2a17ab KS |
3066 | record_unwind_protect (close_file_unwind, make_number (s)); |
3067 | ||
2ccf3102 KS |
3068 | /* Parse network options in the arg list. |
3069 | We simply ignore anything which isn't a known option (including other keywords). | |
3070 | An error is signalled if setting a known option fails. */ | |
3071 | for (optn = optbits = 0; optn < nargs-1; optn += 2) | |
3072 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3073 | ||
e690ca94 KS |
3074 | if (is_server) |
3075 | { | |
3076 | /* Configure as a server socket. */ | |
2ccf3102 KS |
3077 | |
3078 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3079 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3080 | #ifdef HAVE_LOCAL_SOCKETS |
3081 | if (family != AF_LOCAL) | |
3082 | #endif | |
2ccf3102 KS |
3083 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3084 | { | |
3085 | int optval = 1; | |
3086 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
7c402969 | 3087 | report_file_error ("Cannot set reuse option on server socket", Qnil); |
2ccf3102 | 3088 | } |
177c0ea7 | 3089 | |
e690ca94 KS |
3090 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3091 | report_file_error ("Cannot bind server socket", Qnil); | |
3092 | ||
3093 | #ifdef HAVE_GETSOCKNAME | |
3094 | if (EQ (service, Qt)) | |
3095 | { | |
3096 | struct sockaddr_in sa1; | |
3097 | int len1 = sizeof (sa1); | |
3098 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3099 | { | |
3100 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3101 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3102 | contact = Fplist_put (contact, QCservice, service); |
3103 | } | |
3104 | } | |
3105 | #endif | |
3106 | ||
2ccf3102 | 3107 | if (socktype == SOCK_STREAM && listen (s, backlog)) |
e690ca94 KS |
3108 | report_file_error ("Cannot listen on server socket", Qnil); |
3109 | ||
3110 | break; | |
3111 | } | |
3112 | ||
dd2a17ab KS |
3113 | immediate_quit = 1; |
3114 | QUIT; | |
3115 | ||
3116 | /* This turns off all alarm-based interrupts; the | |
3117 | bind_polling_period call above doesn't always turn all the | |
3118 | short-interval ones off, especially if interrupt_input is | |
3119 | set. | |
3120 | ||
3121 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3122 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3123 | |
3124 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3125 | ||
f40f9848 | 3126 | turn_on_atimers (0); |
dd2a17ab KS |
3127 | |
3128 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3129 | xerrno = errno; | |
3130 | ||
f40f9848 | 3131 | turn_on_atimers (1); |
dd2a17ab KS |
3132 | |
3133 | if (ret == 0 || xerrno == EISCONN) | |
3134 | { | |
dd2a17ab KS |
3135 | /* The unwind-protect will be discarded afterwards. |
3136 | Likewise for immediate_quit. */ | |
3137 | break; | |
3138 | } | |
3139 | ||
3140 | #ifdef NON_BLOCKING_CONNECT | |
3141 | #ifdef EINPROGRESS | |
e690ca94 | 3142 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3143 | break; |
3144 | #else | |
3145 | #ifdef EWOULDBLOCK | |
e690ca94 | 3146 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3147 | break; |
3148 | #endif | |
3149 | #endif | |
3150 | #endif | |
e333e864 | 3151 | |
0f2ee0c1 RS |
3152 | immediate_quit = 0; |
3153 | ||
dd2a17ab | 3154 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3155 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3156 | emacs_close (s); |
dd2a17ab | 3157 | s = -1; |
4e9dd03b KS |
3158 | |
3159 | if (xerrno == EINTR) | |
3160 | goto retry_connect; | |
dd2a17ab | 3161 | } |
457a9bee | 3162 | |
e690ca94 KS |
3163 | if (s >= 0) |
3164 | { | |
3165 | #ifdef DATAGRAM_SOCKETS | |
3166 | if (socktype == SOCK_DGRAM) | |
3167 | { | |
3168 | if (datagram_address[s].sa) | |
3169 | abort (); | |
3170 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3171 | datagram_address[s].len = lres->ai_addrlen; | |
3172 | if (is_server) | |
3173 | { | |
3174 | Lisp_Object remote; | |
3175 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3176 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3177 | { | |
3178 | int rfamily, rlen; | |
3179 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3180 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3181 | conv_lisp_to_sockaddr (rfamily, remote, | |
3182 | datagram_address[s].sa, rlen); | |
3183 | } | |
3184 | } | |
3185 | else | |
3186 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3187 | } | |
3188 | #endif | |
177c0ea7 | 3189 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3190 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3191 | #ifdef HAVE_GETSOCKNAME |
3192 | if (!is_server) | |
3193 | { | |
3194 | struct sockaddr_in sa1; | |
3195 | int len1 = sizeof (sa1); | |
3196 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3197 | contact = Fplist_put (contact, QClocal, | |
3198 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3199 | } | |
3200 | #endif | |
e690ca94 KS |
3201 | } |
3202 | ||
dd2a17ab | 3203 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3204 | if (res != &ai) |
3205 | freeaddrinfo (res); | |
dd2a17ab KS |
3206 | #endif |
3207 | ||
e690ca94 KS |
3208 | immediate_quit = 0; |
3209 | ||
3210 | /* Discard the unwind protect for closing S, if any. */ | |
3211 | specpdl_ptr = specpdl + count1; | |
3212 | ||
3213 | /* Unwind bind_polling_period and request_sigio. */ | |
3214 | unbind_to (count, Qnil); | |
3215 | ||
dd2a17ab KS |
3216 | if (s < 0) |
3217 | { | |
dd2a17ab KS |
3218 | /* If non-blocking got this far - and failed - assume non-blocking is |
3219 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3220 | the normal blocking calls to open-network-stream handles this error |
3221 | better. */ | |
3222 | if (is_non_blocking_client) | |
dd2a17ab | 3223 | return Qnil; |
dd2a17ab | 3224 | |
d0d6b7c5 | 3225 | errno = xerrno; |
e690ca94 KS |
3226 | if (is_server) |
3227 | report_file_error ("make server process failed", contact); | |
3228 | else | |
3229 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3230 | } |
44ade2e9 | 3231 | |
e690ca94 | 3232 | #endif /* not TERM */ |
d0d6b7c5 JB |
3233 | |
3234 | inch = s; | |
59f23005 | 3235 | outch = s; |
d0d6b7c5 JB |
3236 | |
3237 | if (!NILP (buffer)) | |
3238 | buffer = Fget_buffer_create (buffer); | |
3239 | proc = make_process (name); | |
3240 | ||
3241 | chan_process[inch] = proc; | |
3242 | ||
3243 | #ifdef O_NONBLOCK | |
3244 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3245 | #else | |
3246 | #ifdef O_NDELAY | |
3247 | fcntl (inch, F_SETFL, O_NDELAY); | |
3248 | #endif | |
3249 | #endif | |
3250 | ||
e690ca94 KS |
3251 | p = XPROCESS (proc); |
3252 | ||
3253 | p->childp = contact; | |
faa7db08 | 3254 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
177c0ea7 | 3255 | |
e690ca94 KS |
3256 | p->buffer = buffer; |
3257 | p->sentinel = sentinel; | |
3258 | p->filter = filter; | |
03f04413 KH |
3259 | p->filter_multibyte = buffer_defaults.enable_multibyte_characters; |
3260 | /* Override the above only if :filter-multibyte is specified. */ | |
3261 | if (! NILP (Fplist_member (contact, QCfilter_multibyte))) | |
3262 | p->filter_multibyte = Fplist_get (contact, QCfilter_multibyte); | |
e690ca94 KS |
3263 | p->log = Fplist_get (contact, QClog); |
3264 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
3265 | p->kill_without_query = Qt; | |
3266 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) | |
3267 | p->command = Qt; | |
3268 | p->pid = Qnil; | |
3269 | XSETINT (p->infd, inch); | |
3270 | XSETINT (p->outfd, outch); | |
3271 | if (is_server && socktype == SOCK_STREAM) | |
3272 | p->status = Qlisten; | |
dd2a17ab KS |
3273 | |
3274 | #ifdef NON_BLOCKING_CONNECT | |
e690ca94 | 3275 | if (is_non_blocking_client) |
dd2a17ab KS |
3276 | { |
3277 | /* We may get here if connect did succeed immediately. However, | |
3278 | in that case, we still need to signal this like a non-blocking | |
3279 | connection. */ | |
e690ca94 | 3280 | p->status = Qconnect; |
dd2a17ab KS |
3281 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3282 | { | |
3283 | FD_SET (inch, &connect_wait_mask); | |
3284 | num_pending_connects++; | |
3285 | } | |
3286 | } | |
3287 | else | |
3288 | #endif | |
e690ca94 KS |
3289 | /* A server may have a client filter setting of Qt, but it must |
3290 | still listen for incoming connects unless it is stopped. */ | |
3291 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3292 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3293 | { |
3294 | FD_SET (inch, &input_wait_mask); | |
3295 | FD_SET (inch, &non_keyboard_wait_mask); | |
3296 | } | |
3297 | ||
7d0e672e RS |
3298 | if (inch > max_process_desc) |
3299 | max_process_desc = inch; | |
d0d6b7c5 | 3300 | |
e690ca94 KS |
3301 | tem = Fplist_member (contact, QCcoding); |
3302 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3303 | tem = Qnil; /* No error message (too late!). */ | |
3304 | ||
67918941 RS |
3305 | { |
3306 | /* Setup coding systems for communicating with the network stream. */ | |
3307 | struct gcpro gcpro1; | |
3308 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3309 | Lisp_Object coding_systems = Qt; | |
3310 | Lisp_Object args[5], val; | |
3311 | ||
e690ca94 | 3312 | if (!NILP (tem)) |
2ccf3102 KS |
3313 | { |
3314 | val = XCAR (XCDR (tem)); | |
3315 | if (CONSP (val)) | |
3316 | val = XCAR (val); | |
3317 | } | |
e690ca94 | 3318 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3319 | val = Vcoding_system_for_read; |
41d03b9a GM |
3320 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3321 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3322 | /* We dare not decode end-of-line format by setting VAL to |
3323 | Qraw_text, because the existing Emacs Lisp libraries | |
3324 | assume that they receive bare code including a sequene of | |
3325 | CR LF. */ | |
3326 | val = Qnil; | |
3327 | else | |
3328 | { | |
991234f0 KS |
3329 | if (NILP (host) || NILP (service)) |
3330 | coding_systems = Qnil; | |
3331 | else | |
3332 | { | |
3333 | args[0] = Qopen_network_stream, args[1] = name, | |
3334 | args[2] = buffer, args[3] = host, args[4] = service; | |
3335 | GCPRO1 (proc); | |
3336 | coding_systems = Ffind_operation_coding_system (5, args); | |
3337 | UNGCPRO; | |
3338 | } | |
67918941 | 3339 | if (CONSP (coding_systems)) |
70949dac | 3340 | val = XCAR (coding_systems); |
67918941 | 3341 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3342 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3343 | else |
3344 | val = Qnil; | |
3345 | } | |
e690ca94 | 3346 | p->decode_coding_system = val; |
0fa1789e | 3347 | |
e690ca94 | 3348 | if (!NILP (tem)) |
2ccf3102 KS |
3349 | { |
3350 | val = XCAR (XCDR (tem)); | |
3351 | if (CONSP (val)) | |
3352 | val = XCDR (val); | |
3353 | } | |
e690ca94 | 3354 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3355 | val = Vcoding_system_for_write; |
3356 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3357 | val = Qnil; | |
3358 | else | |
3359 | { | |
3360 | if (EQ (coding_systems, Qt)) | |
3361 | { | |
991234f0 KS |
3362 | if (NILP (host) || NILP (service)) |
3363 | coding_systems = Qnil; | |
3364 | else | |
3365 | { | |
3366 | args[0] = Qopen_network_stream, args[1] = name, | |
3367 | args[2] = buffer, args[3] = host, args[4] = service; | |
3368 | GCPRO1 (proc); | |
3369 | coding_systems = Ffind_operation_coding_system (5, args); | |
3370 | UNGCPRO; | |
3371 | } | |
67918941 RS |
3372 | } |
3373 | if (CONSP (coding_systems)) | |
70949dac | 3374 | val = XCDR (coding_systems); |
67918941 | 3375 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3376 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3377 | else |
3378 | val = Qnil; | |
3379 | } | |
e690ca94 | 3380 | p->encode_coding_system = val; |
67918941 | 3381 | } |
03f04413 | 3382 | setup_process_coding_systems (proc); |
0fa1789e | 3383 | |
e690ca94 KS |
3384 | p->decoding_buf = make_uninit_string (0); |
3385 | p->decoding_carryover = make_number (0); | |
3386 | p->encoding_buf = make_uninit_string (0); | |
3387 | p->encoding_carryover = make_number (0); | |
0fa1789e | 3388 | |
e690ca94 KS |
3389 | p->inherit_coding_system_flag |
3390 | = (!NILP (tem) || NILP (buffer) || !inherit_process_coding_system | |
aa91317a | 3391 | ? Qnil : Qt); |
52a1b894 | 3392 | |
d0d6b7c5 JB |
3393 | UNGCPRO; |
3394 | return proc; | |
3395 | } | |
3396 | #endif /* HAVE_SOCKETS */ | |
3397 | ||
161933c7 | 3398 | \f |
b8c7fd71 | 3399 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
161933c7 KS |
3400 | |
3401 | #ifdef SIOCGIFCONF | |
3402 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3403 | doc: /* Return an alist of all network interfaces and their network address. | |
3404 | Each element is a cons, the car of which is a string containing the | |
3405 | interface name, and the cdr is the network address in internal | |
e1283999 | 3406 | format; see the description of ADDRESS in `make-network-process'. */) |
161933c7 KS |
3407 | () |
3408 | { | |
3409 | struct ifconf ifconf; | |
3410 | struct ifreq *ifreqs = NULL; | |
3411 | int ifaces = 0; | |
3412 | int buf_size, s; | |
3413 | Lisp_Object res; | |
3414 | ||
3415 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3416 | if (s < 0) | |
3417 | return Qnil; | |
3418 | ||
3419 | again: | |
3420 | ifaces += 25; | |
3421 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3422 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3423 | if (!ifreqs) | |
3424 | { | |
3425 | close (s); | |
3426 | return Qnil; | |
3427 | } | |
3428 | ||
3429 | ifconf.ifc_len = buf_size; | |
3430 | ifconf.ifc_req = ifreqs; | |
3431 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3432 | { | |
3433 | close (s); | |
3434 | return Qnil; | |
3435 | } | |
3436 | ||
3437 | if (ifconf.ifc_len == buf_size) | |
3438 | goto again; | |
3439 | ||
3440 | close (s); | |
3441 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3442 | ||
3443 | res = Qnil; | |
3444 | while (--ifaces >= 0) | |
3445 | { | |
3446 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3447 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3448 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3449 | continue; | |
3450 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3451 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3452 | res = Fcons (Fcons (build_string (namebuf), | |
3453 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3454 | sizeof (struct sockaddr))), | |
3455 | res); | |
3456 | } | |
3457 | ||
3458 | return res; | |
3459 | } | |
b8c7fd71 | 3460 | #endif /* SIOCGIFCONF */ |
161933c7 KS |
3461 | |
3462 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3463 | ||
3464 | struct ifflag_def { | |
3465 | int flag_bit; | |
3466 | char *flag_sym; | |
3467 | }; | |
3468 | ||
3469 | static struct ifflag_def ifflag_table[] = { | |
3470 | #ifdef IFF_UP | |
3471 | { IFF_UP, "up" }, | |
3472 | #endif | |
3473 | #ifdef IFF_BROADCAST | |
3474 | { IFF_BROADCAST, "broadcast" }, | |
3475 | #endif | |
3476 | #ifdef IFF_DEBUG | |
3477 | { IFF_DEBUG, "debug" }, | |
3478 | #endif | |
3479 | #ifdef IFF_LOOPBACK | |
3480 | { IFF_LOOPBACK, "loopback" }, | |
3481 | #endif | |
3482 | #ifdef IFF_POINTOPOINT | |
3483 | { IFF_POINTOPOINT, "pointopoint" }, | |
3484 | #endif | |
3485 | #ifdef IFF_RUNNING | |
3486 | { IFF_RUNNING, "running" }, | |
3487 | #endif | |
3488 | #ifdef IFF_NOARP | |
3489 | { IFF_NOARP, "noarp" }, | |
3490 | #endif | |
3491 | #ifdef IFF_PROMISC | |
3492 | { IFF_PROMISC, "promisc" }, | |
3493 | #endif | |
3494 | #ifdef IFF_NOTRAILERS | |
3495 | { IFF_NOTRAILERS, "notrailers" }, | |
3496 | #endif | |
3497 | #ifdef IFF_ALLMULTI | |
3498 | { IFF_ALLMULTI, "allmulti" }, | |
3499 | #endif | |
3500 | #ifdef IFF_MASTER | |
3501 | { IFF_MASTER, "master" }, | |
3502 | #endif | |
3503 | #ifdef IFF_SLAVE | |
3504 | { IFF_SLAVE, "slave" }, | |
3505 | #endif | |
3506 | #ifdef IFF_MULTICAST | |
3507 | { IFF_MULTICAST, "multicast" }, | |
3508 | #endif | |
3509 | #ifdef IFF_PORTSEL | |
3510 | { IFF_PORTSEL, "portsel" }, | |
3511 | #endif | |
3512 | #ifdef IFF_AUTOMEDIA | |
3513 | { IFF_AUTOMEDIA, "automedia" }, | |
3514 | #endif | |
3515 | #ifdef IFF_DYNAMIC | |
3516 | { IFF_DYNAMIC, "dynamic" }, | |
3517 | #endif | |
3518 | { 0, 0 } | |
3519 | }; | |
3520 | ||
2ccf3102 | 3521 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, |
161933c7 KS |
3522 | doc: /* Return information about network interface named IFNAME. |
3523 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3524 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3525 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3526 | FLAGS is the current flags of the interface. */) | |
3527 | (ifname) | |
3528 | Lisp_Object ifname; | |
3529 | { | |
3530 | struct ifreq rq; | |
3531 | Lisp_Object res = Qnil; | |
3532 | Lisp_Object elt; | |
3533 | int s; | |
3534 | int any = 0; | |
3535 | ||
3536 | CHECK_STRING (ifname); | |
3537 | ||
3538 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
3539 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
3540 | ||
3541 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3542 | if (s < 0) | |
3543 | return Qnil; | |
3544 | ||
3545 | elt = Qnil; | |
559c53b3 | 3546 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) |
161933c7 KS |
3547 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3548 | { | |
3549 | int flags = rq.ifr_flags; | |
3550 | struct ifflag_def *fp; | |
3551 | int fnum; | |
3552 | ||
3553 | any++; | |
3554 | for (fp = ifflag_table; flags != 0 && fp; fp++) | |
3555 | { | |
3556 | if (flags & fp->flag_bit) | |
3557 | { | |
3558 | elt = Fcons (intern (fp->flag_sym), elt); | |
3559 | flags -= fp->flag_bit; | |
3560 | } | |
3561 | } | |
3562 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3563 | { | |
3564 | if (flags & (1 << fnum)) | |
3565 | { | |
3566 | elt = Fcons (make_number (fnum), elt); | |
3567 | } | |
3568 | } | |
3569 | } | |
3570 | #endif | |
3571 | res = Fcons (elt, res); | |
3572 | ||
3573 | elt = Qnil; | |
559c53b3 | 3574 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) |
161933c7 KS |
3575 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3576 | { | |
b8c7fd71 | 3577 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); |
161933c7 KS |
3578 | register struct Lisp_Vector *p = XVECTOR (hwaddr); |
3579 | int n; | |
3580 | ||
3581 | any++; | |
3582 | for (n = 0; n < 6; n++) | |
3583 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
e1283999 | 3584 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); |
161933c7 KS |
3585 | } |
3586 | #endif | |
3587 | res = Fcons (elt, res); | |
3588 | ||
3589 | elt = Qnil; | |
b8c7fd71 | 3590 | #if defined(SIOCGIFNETMASK) && defined(ifr_netmask) |
161933c7 KS |
3591 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3592 | { | |
3593 | any++; | |
3594 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); | |
3595 | } | |
3596 | #endif | |
3597 | res = Fcons (elt, res); | |
3598 | ||
3599 | elt = Qnil; | |
559c53b3 | 3600 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
161933c7 KS |
3601 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3602 | { | |
3603 | any++; | |
3604 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3605 | } | |
3606 | #endif | |
3607 | res = Fcons (elt, res); | |
3608 | ||
3609 | elt = Qnil; | |
559c53b3 | 3610 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) |
161933c7 KS |
3611 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3612 | { | |
3613 | any++; | |
3614 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3615 | } | |
3616 | #endif | |
3617 | res = Fcons (elt, res); | |
3618 | ||
3619 | close (s); | |
3620 | ||
3621 | return any ? res : Qnil; | |
3622 | } | |
3623 | #endif | |
3624 | #endif /* HAVE_SOCKETS */ | |
3625 | ||
04391069 RS |
3626 | /* Turn off input and output for process PROC. */ |
3627 | ||
6b53bb85 | 3628 | void |
d0d6b7c5 JB |
3629 | deactivate_process (proc) |
3630 | Lisp_Object proc; | |
3631 | { | |
3632 | register int inchannel, outchannel; | |
3633 | register struct Lisp_Process *p = XPROCESS (proc); | |
3634 | ||
a9f2c884 RS |
3635 | inchannel = XINT (p->infd); |
3636 | outchannel = XINT (p->outfd); | |
d0d6b7c5 | 3637 | |
2d942bfa KS |
3638 | #ifdef ADAPTIVE_READ_BUFFERING |
3639 | if (XINT (p->read_output_delay) > 0) | |
3640 | { | |
3641 | if (--process_output_delay_count < 0) | |
3642 | process_output_delay_count = 0; | |
3643 | XSETINT (p->read_output_delay, 0); | |
3644 | p->read_output_skip = Qnil; | |
3645 | } | |
3646 | #endif | |
f3d9532b | 3647 | |
a9f2c884 | 3648 | if (inchannel >= 0) |
d0d6b7c5 JB |
3649 | { |
3650 | /* Beware SIGCHLD hereabouts. */ | |
3651 | flush_pending_output (inchannel); | |
3652 | #ifdef VMS | |
3653 | { | |
3654 | VMS_PROC_STUFF *get_vms_process_pointer (), *vs; | |
3655 | sys$dassgn (outchannel); | |
c6c6865d | 3656 | vs = get_vms_process_pointer (p->pid); |
d0d6b7c5 JB |
3657 | if (vs) |
3658 | give_back_vms_process_stuff (vs); | |
3659 | } | |
3660 | #else | |
68c45bf0 | 3661 | emacs_close (inchannel); |
a9f2c884 | 3662 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3663 | emacs_close (outchannel); |
d0d6b7c5 JB |
3664 | #endif |
3665 | ||
1d056e64 KH |
3666 | XSETINT (p->infd, -1); |
3667 | XSETINT (p->outfd, -1); | |
e690ca94 KS |
3668 | #ifdef DATAGRAM_SOCKETS |
3669 | if (DATAGRAM_CHAN_P (inchannel)) | |
3670 | { | |
3671 | xfree (datagram_address[inchannel].sa); | |
3672 | datagram_address[inchannel].sa = 0; | |
3673 | datagram_address[inchannel].len = 0; | |
3674 | } | |
3675 | #endif | |
d0d6b7c5 JB |
3676 | chan_process[inchannel] = Qnil; |
3677 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3678 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3679 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3680 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3681 | { | |
3682 | FD_CLR (inchannel, &connect_wait_mask); | |
3683 | if (--num_pending_connects < 0) | |
3684 | abort (); | |
3685 | } | |
bad49fc7 | 3686 | #endif |
7d0e672e RS |
3687 | if (inchannel == max_process_desc) |
3688 | { | |
3689 | int i; | |
3690 | /* We just closed the highest-numbered process input descriptor, | |
3691 | so recompute the highest-numbered one now. */ | |
3692 | max_process_desc = 0; | |
3693 | for (i = 0; i < MAXDESC; i++) | |
3694 | if (!NILP (chan_process[i])) | |
3695 | max_process_desc = i; | |
3696 | } | |
d0d6b7c5 JB |
3697 | } |
3698 | } | |
3699 | ||
3700 | /* Close all descriptors currently in use for communication | |
3701 | with subprocess. This is used in a newly-forked subprocess | |
3702 | to get rid of irrelevant descriptors. */ | |
3703 | ||
6b53bb85 | 3704 | void |
d0d6b7c5 JB |
3705 | close_process_descs () |
3706 | { | |
e98d950b | 3707 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
3708 | int i; |
3709 | for (i = 0; i < MAXDESC; i++) | |
3710 | { | |
3711 | Lisp_Object process; | |
3712 | process = chan_process[i]; | |
3713 | if (!NILP (process)) | |
3714 | { | |
a9f2c884 RS |
3715 | int in = XINT (XPROCESS (process)->infd); |
3716 | int out = XINT (XPROCESS (process)->outfd); | |
3717 | if (in >= 0) | |
68c45bf0 | 3718 | emacs_close (in); |
a9f2c884 | 3719 | if (out >= 0 && in != out) |
68c45bf0 | 3720 | emacs_close (out); |
d0d6b7c5 JB |
3721 | } |
3722 | } | |
e98d950b | 3723 | #endif |
d0d6b7c5 JB |
3724 | } |
3725 | \f | |
3726 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3727 | 0, 4, 0, |
fdb82f93 PJ |
3728 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3729 | It is read into the process' buffers or given to their filter functions. | |
3730 | Non-nil arg PROCESS means do not return until some output has been received | |
3731 | from PROCESS. | |
3732 | Non-nil second arg TIMEOUT and third arg TIMEOUT-MSECS are number of | |
3733 | seconds and microseconds to wait; return after that much time whether | |
3734 | or not there is input. | |
107ed38d KS |
3735 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3736 | from PROCESS, suspending reading output from other processes. | |
3737 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
fdb82f93 | 3738 | Return non-nil iff we received any output before the timeout expired. */) |
107ed38d KS |
3739 | (process, timeout, timeout_msecs, just_this_one) |
3740 | register Lisp_Object process, timeout, timeout_msecs, just_this_one; | |
d0d6b7c5 JB |
3741 | { |
3742 | int seconds; | |
3743 | int useconds; | |
3744 | ||
0748d150 | 3745 | if (! NILP (process)) |
b7826503 | 3746 | CHECK_PROCESS (process); |
107ed38d KS |
3747 | else |
3748 | just_this_one = Qnil; | |
0748d150 | 3749 | |
d0d6b7c5 JB |
3750 | if (! NILP (timeout_msecs)) |
3751 | { | |
b7826503 | 3752 | CHECK_NUMBER (timeout_msecs); |
d0d6b7c5 | 3753 | useconds = XINT (timeout_msecs); |
bcd69aea | 3754 | if (!INTEGERP (timeout)) |
1d056e64 | 3755 | XSETINT (timeout, 0); |
d0d6b7c5 JB |
3756 | |
3757 | { | |
3758 | int carry = useconds / 1000000; | |
3759 | ||
3760 | XSETINT (timeout, XINT (timeout) + carry); | |
3761 | useconds -= carry * 1000000; | |
3762 | ||
3763 | /* I think this clause is necessary because C doesn't | |
3764 | guarantee a particular rounding direction for negative | |
3765 | integers. */ | |
3766 | if (useconds < 0) | |
3767 | { | |
3768 | XSETINT (timeout, XINT (timeout) - 1); | |
3769 | useconds += 1000000; | |
3770 | } | |
3771 | } | |
3772 | } | |
de946e5a RS |
3773 | else |
3774 | useconds = 0; | |
d0d6b7c5 JB |
3775 | |
3776 | if (! NILP (timeout)) | |
3777 | { | |
b7826503 | 3778 | CHECK_NUMBER (timeout); |
d0d6b7c5 | 3779 | seconds = XINT (timeout); |
ada9a4fd | 3780 | if (seconds < 0 || (seconds == 0 && useconds == 0)) |
d0d6b7c5 JB |
3781 | seconds = -1; |
3782 | } | |
3783 | else | |
26d7389d | 3784 | seconds = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
3785 | |
3786 | return | |
214d6069 KS |
3787 | (wait_reading_process_output (seconds, useconds, 0, 0, |
3788 | Qnil, | |
3789 | !NILP (process) ? XPROCESS (process) : NULL, | |
3790 | NILP (just_this_one) ? 0 : | |
3791 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3792 | ? Qt : Qnil); |
3793 | } | |
3794 | ||
e690ca94 KS |
3795 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3796 | ||
3797 | static int connect_counter = 0; | |
3798 | ||
3799 | static void | |
3800 | server_accept_connection (server, channel) | |
3801 | Lisp_Object server; | |
3802 | int channel; | |
3803 | { | |
3804 | Lisp_Object proc, caller, name, buffer; | |
3805 | Lisp_Object contact, host, service; | |
3806 | struct Lisp_Process *ps= XPROCESS (server); | |
3807 | struct Lisp_Process *p; | |
3808 | int s; | |
3809 | union u_sockaddr { | |
3810 | struct sockaddr sa; | |
3811 | struct sockaddr_in in; | |
3812 | #ifdef HAVE_LOCAL_SOCKETS | |
3813 | struct sockaddr_un un; | |
3814 | #endif | |
3815 | } saddr; | |
3816 | int len = sizeof saddr; | |
3817 | ||
3818 | s = accept (channel, &saddr.sa, &len); | |
3819 | ||
3820 | if (s < 0) | |
3821 | { | |
3822 | int code = errno; | |
3823 | ||
3824 | if (code == EAGAIN) | |
3825 | return; | |
3826 | #ifdef EWOULDBLOCK | |
3827 | if (code == EWOULDBLOCK) | |
3828 | return; | |
3829 | #endif | |
3830 | ||
3831 | if (!NILP (ps->log)) | |
3832 | call3 (ps->log, server, Qnil, | |
3833 | concat3 (build_string ("accept failed with code"), | |
3834 | Fnumber_to_string (make_number (code)), | |
3835 | build_string ("\n"))); | |
3836 | return; | |
3837 | } | |
3838 | ||
3839 | connect_counter++; | |
3840 | ||
3841 | /* Setup a new process to handle the connection. */ | |
3842 | ||
3843 | /* Generate a unique identification of the caller, and build contact | |
3844 | information for this process. */ | |
3845 | host = Qt; | |
3846 | service = Qnil; | |
3847 | switch (saddr.sa.sa_family) | |
3848 | { | |
3849 | case AF_INET: | |
3850 | { | |
3851 | Lisp_Object args[5]; | |
3852 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
3853 | args[0] = build_string ("%d.%d.%d.%d"); | |
3854 | args[1] = make_number (*ip++); | |
3855 | args[2] = make_number (*ip++); | |
3856 | args[3] = make_number (*ip++); | |
3857 | args[4] = make_number (*ip++); | |
3858 | host = Fformat (5, args); | |
3859 | service = make_number (ntohs (saddr.in.sin_port)); | |
3860 | ||
3861 | args[0] = build_string (" <%s:%d>"); | |
3862 | args[1] = host; | |
3863 | args[2] = service; | |
3864 | caller = Fformat (3, args); | |
3865 | } | |
3866 | break; | |
3867 | ||
3868 | #ifdef HAVE_LOCAL_SOCKETS | |
3869 | case AF_LOCAL: | |
3870 | #endif | |
3871 | default: | |
3872 | caller = Fnumber_to_string (make_number (connect_counter)); | |
3873 | caller = concat3 (build_string (" <*"), caller, build_string ("*>")); | |
3874 | break; | |
3875 | } | |
3876 | ||
3877 | /* Create a new buffer name for this process if it doesn't have a | |
3878 | filter. The new buffer name is based on the buffer name or | |
3879 | process name of the server process concatenated with the caller | |
3880 | identification. */ | |
3881 | ||
3882 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
3883 | buffer = Qnil; | |
3884 | else | |
3885 | { | |
3886 | buffer = ps->buffer; | |
3887 | if (!NILP (buffer)) | |
3888 | buffer = Fbuffer_name (buffer); | |
3889 | else | |
3890 | buffer = ps->name; | |
3891 | if (!NILP (buffer)) | |
3892 | { | |
3893 | buffer = concat2 (buffer, caller); | |
3894 | buffer = Fget_buffer_create (buffer); | |
3895 | } | |
3896 | } | |
3897 | ||
3898 | /* Generate a unique name for the new server process. Combine the | |
3899 | server process name with the caller identification. */ | |
3900 | ||
3901 | name = concat2 (ps->name, caller); | |
3902 | proc = make_process (name); | |
3903 | ||
3904 | chan_process[s] = proc; | |
3905 | ||
3906 | #ifdef O_NONBLOCK | |
3907 | fcntl (s, F_SETFL, O_NONBLOCK); | |
3908 | #else | |
3909 | #ifdef O_NDELAY | |
3910 | fcntl (s, F_SETFL, O_NDELAY); | |
3911 | #endif | |
3912 | #endif | |
3913 | ||
3914 | p = XPROCESS (proc); | |
3915 | ||
3916 | /* Build new contact information for this setup. */ | |
3917 | contact = Fcopy_sequence (ps->childp); | |
3918 | contact = Fplist_put (contact, QCserver, Qnil); | |
3919 | contact = Fplist_put (contact, QChost, host); | |
3920 | if (!NILP (service)) | |
3921 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 3922 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
3923 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
3924 | #ifdef HAVE_GETSOCKNAME | |
3925 | len = sizeof saddr; | |
2185db04 | 3926 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 3927 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
3928 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
3929 | #endif | |
3930 | ||
3931 | p->childp = contact; | |
faa7db08 | 3932 | p->plist = Fcopy_sequence (ps->plist); |
ac4a7584 | 3933 | |
e690ca94 KS |
3934 | p->buffer = buffer; |
3935 | p->sentinel = ps->sentinel; | |
3936 | p->filter = ps->filter; | |
3937 | p->command = Qnil; | |
3938 | p->pid = Qnil; | |
3939 | XSETINT (p->infd, s); | |
3940 | XSETINT (p->outfd, s); | |
3941 | p->status = Qrun; | |
3942 | ||
3943 | /* Client processes for accepted connections are not stopped initially. */ | |
3944 | if (!EQ (p->filter, Qt)) | |
3945 | { | |
3946 | FD_SET (s, &input_wait_mask); | |
3947 | FD_SET (s, &non_keyboard_wait_mask); | |
3948 | } | |
3949 | ||
3950 | if (s > max_process_desc) | |
3951 | max_process_desc = s; | |
3952 | ||
177c0ea7 | 3953 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
3954 | This seems to be the proper thing to do, as the coding system |
3955 | of the new process should reflect the settings at the time the | |
3956 | server socket was opened; not the current settings. */ | |
3957 | ||
3958 | p->decode_coding_system = ps->decode_coding_system; | |
3959 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 3960 | setup_process_coding_systems (proc); |
e690ca94 KS |
3961 | |
3962 | p->decoding_buf = make_uninit_string (0); | |
3963 | p->decoding_carryover = make_number (0); | |
3964 | p->encoding_buf = make_uninit_string (0); | |
3965 | p->encoding_carryover = make_number (0); | |
3966 | ||
3967 | p->inherit_coding_system_flag | |
3968 | = (NILP (buffer) ? Qnil : ps->inherit_coding_system_flag); | |
3969 | ||
3970 | if (!NILP (ps->log)) | |
3971 | call3 (ps->log, server, proc, | |
3972 | concat3 (build_string ("accept from "), | |
3973 | (STRINGP (host) ? host : build_string ("-")), | |
3974 | build_string ("\n"))); | |
3975 | ||
bed9664a | 3976 | if (!NILP (p->sentinel)) |
177c0ea7 | 3977 | exec_sentinel (proc, |
e690ca94 KS |
3978 | concat3 (build_string ("open from "), |
3979 | (STRINGP (host) ? host : build_string ("-")), | |
3980 | build_string ("\n"))); | |
3981 | } | |
3982 | ||
d0d6b7c5 JB |
3983 | /* This variable is different from waiting_for_input in keyboard.c. |
3984 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 3985 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
3986 | for user-input when that process-filter was called. |
3987 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
3988 | lisp code is being evalled. |
3989 | This is also used in record_asynch_buffer_change. | |
3990 | For that purpose, this must be 0 | |
214d6069 | 3991 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
3992 | static int waiting_for_user_input_p; |
3993 | ||
c573ae8e | 3994 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 3995 | static void |
214d6069 | 3996 | wait_reading_process_output_1 () |
c573ae8e RS |
3997 | { |
3998 | } | |
3999 | ||
d0d6b7c5 JB |
4000 | /* Read and dispose of subprocess output while waiting for timeout to |
4001 | elapse and/or keyboard input to be available. | |
4002 | ||
de6fd4b9 | 4003 | TIME_LIMIT is: |
d0d6b7c5 JB |
4004 | timeout in seconds, or |
4005 | zero for no limit, or | |
4006 | -1 means gobble data immediately available but don't wait for any. | |
4007 | ||
de6fd4b9 RS |
4008 | MICROSECS is: |
4009 | an additional duration to wait, measured in microseconds. | |
4010 | If this is nonzero and time_limit is 0, then the timeout | |
4011 | consists of MICROSECS only. | |
6e4f3667 | 4012 | |
de6fd4b9 | 4013 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4014 | 0 to ignore keyboard input, or |
4015 | 1 to return when input is available, or | |
84aa3ace | 4016 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4017 | the quit handler, or |
b89a415a KS |
4018 | |
4019 | DO_DISPLAY != 0 means redisplay should be done to show subprocess | |
107ed38d | 4020 | output that arrives. |
d0d6b7c5 | 4021 | |
b89a415a KS |
4022 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4023 | (and gobble terminal input into the buffer if any arrives). | |
4024 | ||
4025 | If WAIT_PROC is specified, wait until something arrives from that | |
4026 | process. The return value is true iff we read some input from | |
4027 | that process. | |
4028 | ||
4029 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4030 | (suspending output from other processes). A negative value | |
4031 | means don't run any timers either. | |
4032 | ||
4033 | If WAIT_PROC is specified, then the function returns true iff we | |
4034 | received input from that process before the timeout elapsed. | |
eb8c3be9 | 4035 | Otherwise, return true iff we received input from any process. */ |
d0d6b7c5 | 4036 | |
dfcf069d | 4037 | int |
214d6069 KS |
4038 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
4039 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
4040 | int time_limit, microsecs, read_kbd, do_display; |
4041 | Lisp_Object wait_for_cell; | |
4042 | struct Lisp_Process *wait_proc; | |
4043 | int just_wait_proc; | |
d0d6b7c5 | 4044 | { |
41d03b9a | 4045 | register int channel, nfds; |
855448dc | 4046 | SELECT_TYPE Available; |
bad49fc7 | 4047 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4048 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4049 | int check_connect; |
4050 | #endif | |
4051 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4052 | int xerrno; |
4053 | Lisp_Object proc; | |
41d03b9a | 4054 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4055 | int wait_channel = -1; |
d0d6b7c5 | 4056 | int got_some_input = 0; |
f3fbd155 KR |
4057 | /* Either nil or a cons cell, the car of which is of interest and |
4058 | may be changed outside of this routine. */ | |
855448dc | 4059 | int saved_waiting_for_user_input_p = waiting_for_user_input_p; |
d0d6b7c5 JB |
4060 | |
4061 | FD_ZERO (&Available); | |
bad49fc7 | 4062 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4063 | FD_ZERO (&Connecting); |
bad49fc7 | 4064 | #endif |
d0d6b7c5 | 4065 | |
b89a415a KS |
4066 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4067 | if (wait_proc != NULL) | |
4068 | wait_channel = XINT (wait_proc->infd); | |
d0d6b7c5 | 4069 | |
b89a415a | 4070 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4071 | |
4072 | /* Since we may need to wait several times, | |
4073 | compute the absolute time to return at. */ | |
4074 | if (time_limit || microsecs) | |
4075 | { | |
4076 | EMACS_GET_TIME (end_time); | |
4077 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4078 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4079 | } | |
19310311 | 4080 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4081 | /* AlainF 5-Jul-1996 |
4082 | HP-UX 10.10 seem to have problems with signals coming in | |
4083 | Causes "poll: interrupted system call" messages when Emacs is run | |
4084 | in an X window | |
75eb23f1 RS |
4085 | Turn off periodic alarms (in case they are in use), |
4086 | and then turn off any other atimers. */ | |
4087 | stop_polling (); | |
30904ab7 | 4088 | turn_on_atimers (0); |
19310311 | 4089 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
d0d6b7c5 | 4090 | |
d0d6b7c5 JB |
4091 | while (1) |
4092 | { | |
c0239a0b RS |
4093 | int timeout_reduced_for_timers = 0; |
4094 | ||
d0d6b7c5 JB |
4095 | /* If calling from keyboard input, do not quit |
4096 | since we want to return C-g as an input character. | |
4097 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4098 | if (read_kbd >= 0) |
d0d6b7c5 | 4099 | QUIT; |
43ff45a0 SM |
4100 | #ifdef SYNC_INPUT |
4101 | else if (interrupt_input_pending) | |
4102 | handle_async_input (); | |
4103 | #endif | |
d0d6b7c5 | 4104 | |
889255b4 | 4105 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4106 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4107 | break; |
4108 | ||
d0d6b7c5 JB |
4109 | /* Compute time from now till when time limit is up */ |
4110 | /* Exit if already run out */ | |
4111 | if (time_limit == -1) | |
4112 | { | |
4113 | /* -1 specified for timeout means | |
4114 | gobble output available now | |
4115 | but don't wait at all. */ | |
4116 | ||
4117 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4118 | } | |
4119 | else if (time_limit || microsecs) | |
4120 | { | |
4121 | EMACS_GET_TIME (timeout); | |
4122 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4123 | if (EMACS_TIME_NEG_P (timeout)) | |
4124 | break; | |
4125 | } | |
4126 | else | |
4127 | { | |
4128 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4129 | } | |
4130 | ||
f854a00b RS |
4131 | /* Normally we run timers here. |
4132 | But not if wait_for_cell; in those cases, | |
4133 | the wait is supposed to be short, | |
4134 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4135 | if (NILP (wait_for_cell) |
b89a415a | 4136 | && just_wait_proc >= 0) |
fb4c3627 | 4137 | { |
c0239a0b | 4138 | EMACS_TIME timer_delay; |
c573ae8e | 4139 | |
9baacf76 | 4140 | do |
c573ae8e | 4141 | { |
9baacf76 | 4142 | int old_timers_run = timers_run; |
c88164fe | 4143 | struct buffer *old_buffer = current_buffer; |
177c0ea7 | 4144 | |
9baacf76 | 4145 | timer_delay = timer_check (1); |
a2fab450 GM |
4146 | |
4147 | /* If a timer has run, this might have changed buffers | |
4148 | an alike. Make read_key_sequence aware of that. */ | |
4149 | if (timers_run != old_timers_run | |
c88164fe | 4150 | && old_buffer != current_buffer |
a2fab450 GM |
4151 | && waiting_for_user_input_p == -1) |
4152 | record_asynch_buffer_change (); | |
177c0ea7 | 4153 | |
9baacf76 GM |
4154 | if (timers_run != old_timers_run && do_display) |
4155 | /* We must retry, since a timer may have requeued itself | |
4156 | and that could alter the time_delay. */ | |
3007ebfb | 4157 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4158 | else |
4159 | break; | |
c573ae8e | 4160 | } |
9baacf76 | 4161 | while (!detect_input_pending ()); |
c573ae8e | 4162 | |
69645afc | 4163 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4164 | if (read_kbd != 0 |
69645afc RS |
4165 | && requeued_events_pending_p ()) |
4166 | break; | |
4167 | ||
c0239a0b | 4168 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4169 | { |
4170 | EMACS_TIME difference; | |
4171 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4172 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4173 | { |
4174 | timeout = timer_delay; | |
4175 | timeout_reduced_for_timers = 1; | |
4176 | } | |
fb4c3627 | 4177 | } |
4abca5e7 RS |
4178 | /* If time_limit is -1, we are not going to wait at all. */ |
4179 | else if (time_limit != -1) | |
c573ae8e RS |
4180 | { |
4181 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4182 | wait_reading_process_output_1 (); |
c573ae8e | 4183 | } |
fb4c3627 RS |
4184 | } |
4185 | ||
90ab1a81 JB |
4186 | /* Cause C-g and alarm signals to take immediate action, |
4187 | and cause input available signals to zero out timeout. | |
4188 | ||
4189 | It is important that we do this before checking for process | |
4190 | activity. If we get a SIGCHLD after the explicit checks for | |
4191 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4192 | if (read_kbd < 0) |
90ab1a81 JB |
4193 | set_waiting_for_input (&timeout); |
4194 | ||
6be429b1 JB |
4195 | /* If status of something has changed, and no input is |
4196 | available, notify the user of the change right away. After | |
4197 | this explicit check, we'll let the SIGCHLD handler zap | |
4198 | timeout to get our attention. */ | |
4199 | if (update_tick != process_tick && do_display) | |
4200 | { | |
bad49fc7 KS |
4201 | SELECT_TYPE Atemp; |
4202 | #ifdef NON_BLOCKING_CONNECT | |
4203 | SELECT_TYPE Ctemp; | |
4204 | #endif | |
dd2a17ab | 4205 | |
6be429b1 | 4206 | Atemp = input_wait_mask; |
e082ac9d ST |
4207 | #if 0 |
4208 | /* On Mac OS X 10.0, the SELECT system call always says input is | |
e0f712ba | 4209 | present (for reading) at stdin, even when none is. This |
aa87aafc | 4210 | causes the call to SELECT below to return 1 and |
e0f712ba | 4211 | status_notify not to be called. As a result output of |
39b1da20 | 4212 | subprocesses are incorrectly discarded. |
e082ac9d | 4213 | */ |
e0f712ba AC |
4214 | FD_CLR (0, &Atemp); |
4215 | #endif | |
bad49fc7 KS |
4216 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4217 | ||
6be429b1 | 4218 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
0c9960e9 | 4219 | if ((select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4220 | &Atemp, |
bad49fc7 | 4221 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4222 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4223 | #else |
4224 | (SELECT_TYPE *)0, | |
4225 | #endif | |
dd2a17ab | 4226 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4227 | <= 0)) |
90ab1a81 JB |
4228 | { |
4229 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4230 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4231 | clear_waiting_for_input (); |
ff6daed3 | 4232 | status_notify (NULL); |
90ab1a81 | 4233 | } |
6be429b1 JB |
4234 | } |
4235 | ||
dd2a17ab KS |
4236 | /* Don't wait for output from a non-running process. Just |
4237 | read whatever data has already been received. */ | |
6be429b1 JB |
4238 | if (wait_proc != 0 && !NILP (wait_proc->raw_status_low)) |
4239 | update_status (wait_proc); | |
4240 | if (wait_proc != 0 | |
dd2a17ab KS |
4241 | && ! EQ (wait_proc->status, Qrun) |
4242 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4243 | { |
215b45e9 | 4244 | int nread, total_nread = 0; |
7ce63188 | 4245 | |
9aa2a7f4 | 4246 | clear_waiting_for_input (); |
7ce63188 RS |
4247 | XSETPROCESS (proc, wait_proc); |
4248 | ||
4249 | /* Read data from the process, until we exhaust it. */ | |
e1b37c34 | 4250 | while (XINT (wait_proc->infd) >= 0) |
215b45e9 | 4251 | { |
e1b37c34 GM |
4252 | nread = read_process_output (proc, XINT (wait_proc->infd)); |
4253 | ||
4254 | if (nread == 0) | |
4255 | break; | |
4256 | ||
177c0ea7 | 4257 | if (0 < nread) |
215b45e9 RS |
4258 | total_nread += nread; |
4259 | #ifdef EIO | |
4260 | else if (nread == -1 && EIO == errno) | |
4261 | break; | |
e1b37c34 GM |
4262 | #endif |
4263 | #ifdef EAGAIN | |
4264 | else if (nread == -1 && EAGAIN == errno) | |
4265 | break; | |
4266 | #endif | |
4267 | #ifdef EWOULDBLOCK | |
4268 | else if (nread == -1 && EWOULDBLOCK == errno) | |
4269 | break; | |
215b45e9 RS |
4270 | #endif |
4271 | } | |
7ce63188 | 4272 | if (total_nread > 0 && do_display) |
3007ebfb | 4273 | redisplay_preserve_echo_area (10); |
7ce63188 | 4274 | |
9aa2a7f4 JB |
4275 | break; |
4276 | } | |
6be429b1 | 4277 | |
d0d6b7c5 JB |
4278 | /* Wait till there is something to do */ |
4279 | ||
b89a415a | 4280 | if (wait_proc && just_wait_proc) |
107ed38d | 4281 | { |
b89a415a KS |
4282 | if (XINT (wait_proc->infd) < 0) /* Terminated */ |
4283 | break; | |
107ed38d | 4284 | FD_SET (XINT (wait_proc->infd), &Available); |
bad49fc7 KS |
4285 | check_delay = 0; |
4286 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4287 | } |
4288 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4289 | { |
4290 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4291 | check_delay = 0; |
4292 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4293 | } |
a69281ff | 4294 | else |
dd2a17ab | 4295 | { |
b89a415a | 4296 | if (! read_kbd) |
dd2a17ab KS |
4297 | Available = non_keyboard_wait_mask; |
4298 | else | |
4299 | Available = input_wait_mask; | |
bad49fc7 | 4300 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
3af55251 | 4301 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4302 | } |
d0d6b7c5 | 4303 | |
ff11dfa1 | 4304 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4305 | redisplay now, before we start to wait. There is a race |
4306 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4307 | and indicates that a frame is trashed, the select may block |
4308 | displaying a trashed screen. */ | |
5164ee8e | 4309 | if (frame_garbaged && do_display) |
7286affd RS |
4310 | { |
4311 | clear_waiting_for_input (); | |
3007ebfb | 4312 | redisplay_preserve_echo_area (11); |
b89a415a | 4313 | if (read_kbd < 0) |
7efe788e | 4314 | set_waiting_for_input (&timeout); |
7286affd | 4315 | } |
ffd56f97 | 4316 | |
dd2a17ab | 4317 | no_avail = 0; |
b89a415a | 4318 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4319 | { |
4320 | nfds = 0; | |
dd2a17ab | 4321 | no_avail = 1; |
0a65b032 RS |
4322 | } |
4323 | else | |
dd2a17ab | 4324 | { |
bad49fc7 | 4325 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4326 | if (check_connect) |
4327 | Connecting = connect_wait_mask; | |
bad49fc7 | 4328 | #endif |
2d942bfa KS |
4329 | |
4330 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a KS |
4331 | /* Set the timeout for adaptive read buffering if any |
4332 | process has non-nil read_output_skip and non-zero | |
4333 | read_output_delay, and we are not reading output for a | |
4334 | specific wait_channel. It is not executed if | |
4335 | Vprocess_adaptive_read_buffering is nil. */ | |
2d942bfa KS |
4336 | if (process_output_skip && check_delay > 0) |
4337 | { | |
4338 | int usecs = EMACS_USECS (timeout); | |
4339 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4340 | usecs = READ_OUTPUT_DELAY_MAX; | |
4341 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4342 | { | |
4343 | proc = chan_process[channel]; | |
4344 | if (NILP (proc)) | |
4345 | continue; | |
db853b7a KS |
4346 | /* Find minimum non-zero read_output_delay among the |
4347 | processes with non-nil read_output_skip. */ | |
9076a823 | 4348 | if (XINT (XPROCESS (proc)->read_output_delay) > 0) |
2d942bfa KS |
4349 | { |
4350 | check_delay--; | |
4351 | if (NILP (XPROCESS (proc)->read_output_skip)) | |
4352 | continue; | |
4353 | FD_CLR (channel, &Available); | |
4354 | XPROCESS (proc)->read_output_skip = Qnil; | |
4355 | if (XINT (XPROCESS (proc)->read_output_delay) < usecs) | |
4356 | usecs = XINT (XPROCESS (proc)->read_output_delay); | |
4357 | } | |
4358 | } | |
4359 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4360 | process_output_skip = 0; | |
4361 | } | |
4362 | #endif | |
4363 | ||
dd2a17ab | 4364 | nfds = select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4365 | &Available, |
bad49fc7 | 4366 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4367 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4368 | #else |
4369 | (SELECT_TYPE *)0, | |
4370 | #endif | |
dd2a17ab KS |
4371 | (SELECT_TYPE *)0, &timeout); |
4372 | } | |
6720a7fb | 4373 | |
d0d6b7c5 JB |
4374 | xerrno = errno; |
4375 | ||
4376 | /* Make C-g and alarm signals set flags again */ | |
4377 | clear_waiting_for_input (); | |
4378 | ||
4379 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4380 | do_pending_window_change (0); |
d0d6b7c5 | 4381 | |
c0239a0b RS |
4382 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4383 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4384 | break; |
4385 | if (nfds < 0) | |
4386 | { | |
4387 | if (xerrno == EINTR) | |
dd2a17ab | 4388 | no_avail = 1; |
b0310da4 JB |
4389 | #ifdef ultrix |
4390 | /* Ultrix select seems to return ENOMEM when it is | |
4391 | interrupted. Treat it just like EINTR. Bleah. Note | |
4392 | that we want to test for the "ultrix" CPP symbol, not | |
4393 | "__ultrix__"; the latter is only defined under GCC, but | |
4394 | not by DEC's bundled CC. -JimB */ | |
8058415c | 4395 | else if (xerrno == ENOMEM) |
dd2a17ab | 4396 | no_avail = 1; |
8058415c | 4397 | #endif |
d0d6b7c5 JB |
4398 | #ifdef ALLIANT |
4399 | /* This happens for no known reason on ALLIANT. | |
4400 | I am guessing that this is the right response. -- RMS. */ | |
4401 | else if (xerrno == EFAULT) | |
dd2a17ab | 4402 | no_avail = 1; |
d0d6b7c5 JB |
4403 | #endif |
4404 | else if (xerrno == EBADF) | |
4405 | { | |
4406 | #ifdef AIX | |
4407 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4408 | the child's closure of the pts gives the parent a SIGHUP, and | |
4409 | the ptc file descriptor is automatically closed, | |
4410 | yielding EBADF here or at select() call above. | |
4411 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4412 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4413 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4414 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4415 | #else |
4416 | abort (); | |
4417 | #endif | |
4418 | } | |
4419 | else | |
68c45bf0 | 4420 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4421 | } |
dd2a17ab KS |
4422 | |
4423 | if (no_avail) | |
4424 | { | |
4425 | FD_ZERO (&Available); | |
bad49fc7 | 4426 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4427 | } |
4428 | ||
26ec91de | 4429 | #if defined(sun) && !defined(USG5_4) |
dd2a17ab KS |
4430 | if (nfds > 0 && keyboard_bit_set (&Available) |
4431 | && interrupt_input) | |
e0109153 JB |
4432 | /* System sometimes fails to deliver SIGIO. |
4433 | ||
4434 | David J. Mackenzie says that Emacs doesn't compile under | |
4435 | Solaris if this code is enabled, thus the USG5_4 in the CPP | |
4436 | conditional. "I haven't noticed any ill effects so far. | |
4437 | If you find a Solaris expert somewhere, they might know | |
4438 | better." */ | |
d0d6b7c5 JB |
4439 | kill (getpid (), SIGIO); |
4440 | #endif | |
4441 | ||
5d5beb62 RS |
4442 | #if 0 /* When polling is used, interrupt_input is 0, |
4443 | so get_input_pending should read the input. | |
4444 | So this should not be needed. */ | |
4445 | /* If we are using polling for input, | |
4446 | and we see input available, make it get read now. | |
4447 | Otherwise it might not actually get read for a second. | |
214d6069 | 4448 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4449 | it might never get read at all if we don't spend much time |
214d6069 | 4450 | outside of wait_reading_process_output. */ |
b89a415a | 4451 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4452 | && keyboard_bit_set (&Available) |
4453 | && input_polling_used ()) | |
4454 | kill (getpid (), SIGALRM); | |
4455 | #endif | |
4456 | ||
d0d6b7c5 JB |
4457 | /* Check for keyboard input */ |
4458 | /* If there is any, return immediately | |
4459 | to give it higher priority than subprocesses */ | |
4460 | ||
b89a415a | 4461 | if (read_kbd != 0) |
6ed6233b | 4462 | { |
a2fab450 | 4463 | int old_timers_run = timers_run; |
c88164fe | 4464 | struct buffer *old_buffer = current_buffer; |
a2fab450 | 4465 | int leave = 0; |
177c0ea7 | 4466 | |
5d6c2aa3 | 4467 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4468 | { |
4469 | swallow_events (do_display); | |
4470 | if (detect_input_pending_run_timers (do_display)) | |
4471 | leave = 1; | |
4472 | } | |
6ed6233b | 4473 | |
a2fab450 GM |
4474 | /* If a timer has run, this might have changed buffers |
4475 | an alike. Make read_key_sequence aware of that. */ | |
4476 | if (timers_run != old_timers_run | |
c88164fe GM |
4477 | && waiting_for_user_input_p == -1 |
4478 | && old_buffer != current_buffer) | |
a2fab450 GM |
4479 | record_asynch_buffer_change (); |
4480 | ||
4481 | if (leave) | |
4482 | break; | |
177c0ea7 JB |
4483 | } |
4484 | ||
69645afc | 4485 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4486 | if (read_kbd != 0 |
69645afc RS |
4487 | && requeued_events_pending_p ()) |
4488 | break; | |
4489 | ||
77e1b3d4 RS |
4490 | /* If we are not checking for keyboard input now, |
4491 | do process events (but don't run any timers). | |
4492 | This is so that X events will be processed. | |
0c9960e9 | 4493 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4494 | That would causes delays in pasting selections, for example. |
4495 | ||
4496 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4497 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4498 | { |
4499 | swallow_events (do_display); | |
0c9960e9 | 4500 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4501 | if (detect_input_pending ()) |
4502 | break; | |
5d5beb62 | 4503 | #endif |
0c9960e9 | 4504 | } |
f854a00b | 4505 | |
84aa3ace | 4506 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4507 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4508 | break; |
4509 | ||
4746118a | 4510 | #ifdef SIGIO |
5d5beb62 | 4511 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4512 | go read it. This can happen with X on BSD after logging out. |
4513 | In that case, there really is no input and no SIGIO, | |
4514 | but select says there is input. */ | |
4515 | ||
b89a415a | 4516 | if (read_kbd && interrupt_input |
2601f59e | 4517 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4518 | kill (getpid (), SIGIO); |
4746118a | 4519 | #endif |
d0d6b7c5 | 4520 | |
d0d6b7c5 JB |
4521 | if (! wait_proc) |
4522 | got_some_input |= nfds > 0; | |
4523 | ||
32676c08 JB |
4524 | /* If checking input just got us a size-change event from X, |
4525 | obey it now if we should. */ | |
b89a415a | 4526 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4527 | do_pending_window_change (0); |
32676c08 | 4528 | |
a9f2c884 | 4529 | /* Check for data from a process. */ |
dd2a17ab KS |
4530 | if (no_avail || nfds == 0) |
4531 | continue; | |
4532 | ||
a9f2c884 RS |
4533 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4534 | but this is safer in the short run. */ | |
a69281ff | 4535 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4536 | { |
a69281ff RS |
4537 | if (FD_ISSET (channel, &Available) |
4538 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4539 | { |
4540 | int nread; | |
4541 | ||
4542 | /* If waiting for this channel, arrange to return as | |
4543 | soon as no more input to be processed. No more | |
4544 | waiting. */ | |
4545 | if (wait_channel == channel) | |
4546 | { | |
a9f2c884 | 4547 | wait_channel = -1; |
d0d6b7c5 JB |
4548 | time_limit = -1; |
4549 | got_some_input = 1; | |
4550 | } | |
4551 | proc = chan_process[channel]; | |
4552 | if (NILP (proc)) | |
4553 | continue; | |
4554 | ||
e690ca94 KS |
4555 | /* If this is a server stream socket, accept connection. */ |
4556 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4557 | { | |
4558 | server_accept_connection (proc, channel); | |
4559 | continue; | |
4560 | } | |
4561 | ||
d0d6b7c5 JB |
4562 | /* Read data from the process, starting with our |
4563 | buffered-ahead character if we have one. */ | |
4564 | ||
4565 | nread = read_process_output (proc, channel); | |
4566 | if (nread > 0) | |
4567 | { | |
4568 | /* Since read_process_output can run a filter, | |
4569 | which can call accept-process-output, | |
4570 | don't try to read from any other processes | |
4571 | before doing the select again. */ | |
4572 | FD_ZERO (&Available); | |
4573 | ||
4574 | if (do_display) | |
3007ebfb | 4575 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4576 | } |
4577 | #ifdef EWOULDBLOCK | |
4578 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4579 | ; | |
0b75e9a4 | 4580 | #endif |
89d7280d RS |
4581 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4582 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4583 | #ifdef O_NONBLOCK |
4584 | else if (nread == -1 && errno == EAGAIN) | |
4585 | ; | |
4586 | #else | |
4587 | #ifdef O_NDELAY | |
4588 | else if (nread == -1 && errno == EAGAIN) | |
4589 | ; | |
4590 | /* Note that we cannot distinguish between no input | |
4591 | available now and a closed pipe. | |
4592 | With luck, a closed pipe will be accompanied by | |
4593 | subprocess termination and SIGCHLD. */ | |
4594 | else if (nread == 0 && !NETCONN_P (proc)) | |
4595 | ; | |
ffd56f97 JB |
4596 | #endif /* O_NDELAY */ |
4597 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4598 | #ifdef HAVE_PTYS |
4599 | /* On some OSs with ptys, when the process on one end of | |
4600 | a pty exits, the other end gets an error reading with | |
4601 | errno = EIO instead of getting an EOF (0 bytes read). | |
4602 | Therefore, if we get an error reading and errno = | |
4603 | EIO, just continue, because the child process has | |
4604 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4605 | get a SIGCHLD). |
4606 | ||
4607 | However, it has been known to happen that the SIGCHLD | |
4608 | got lost. So raise the signl again just in case. | |
4609 | It can't hurt. */ | |
d0d6b7c5 | 4610 | else if (nread == -1 && errno == EIO) |
5651af6d | 4611 | kill (getpid (), SIGCHLD); |
ffd56f97 JB |
4612 | #endif /* HAVE_PTYS */ |
4613 | /* If we can detect process termination, don't consider the process | |
4614 | gone just because its pipe is closed. */ | |
d0d6b7c5 JB |
4615 | #ifdef SIGCHLD |
4616 | else if (nread == 0 && !NETCONN_P (proc)) | |
4617 | ; | |
4618 | #endif | |
4619 | else | |
4620 | { | |
4621 | /* Preserve status of processes already terminated. */ | |
4622 | XSETINT (XPROCESS (proc)->tick, ++process_tick); | |
4623 | deactivate_process (proc); | |
4624 | if (!NILP (XPROCESS (proc)->raw_status_low)) | |
4625 | update_status (XPROCESS (proc)); | |
4626 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4627 | XPROCESS (proc)->status | |
4628 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4629 | } | |
4630 | } | |
177c0ea7 | 4631 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
4632 | if (check_connect && FD_ISSET (channel, &Connecting) |
4633 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
4634 | { |
4635 | struct Lisp_Process *p; | |
dd2a17ab KS |
4636 | |
4637 | FD_CLR (channel, &connect_wait_mask); | |
4638 | if (--num_pending_connects < 0) | |
4639 | abort (); | |
4640 | ||
4641 | proc = chan_process[channel]; | |
4642 | if (NILP (proc)) | |
4643 | continue; | |
4644 | ||
4645 | p = XPROCESS (proc); | |
4646 | ||
4647 | #ifdef GNU_LINUX | |
4648 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
4649 | So only use it on systems where it is known to work. */ | |
4650 | { | |
e690ca94 | 4651 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
4652 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
4653 | xerrno = errno; | |
4654 | } | |
4655 | #else | |
44c887be PJ |
4656 | { |
4657 | struct sockaddr pname; | |
4658 | int pnamelen = sizeof(pname); | |
4659 | ||
4660 | /* If connection failed, getpeername will fail. */ | |
4661 | xerrno = 0; | |
4662 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
4663 | { | |
4664 | /* Obtain connect failure code through error slippage. */ | |
4665 | char dummy; | |
dd2a17ab | 4666 | xerrno = errno; |
44c887be PJ |
4667 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
4668 | xerrno = errno; | |
4669 | } | |
4670 | } | |
dd2a17ab KS |
4671 | #endif |
4672 | if (xerrno) | |
4673 | { | |
4674 | XSETINT (p->tick, ++process_tick); | |
4675 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); | |
4676 | deactivate_process (proc); | |
4677 | } | |
4678 | else | |
4679 | { | |
4680 | p->status = Qrun; | |
4681 | /* Execute the sentinel here. If we had relied on | |
4682 | status_notify to do it later, it will read input | |
4683 | from the process before calling the sentinel. */ | |
4684 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4685 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab KS |
4686 | { |
4687 | FD_SET (XINT (p->infd), &input_wait_mask); | |
4688 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
4689 | } | |
4690 | } | |
4691 | } | |
4692 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4693 | } /* end for each file descriptor */ |
4694 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4695 | |
855448dc | 4696 | waiting_for_user_input_p = saved_waiting_for_user_input_p; |
d430ee71 | 4697 | |
ffd56f97 JB |
4698 | /* If calling from keyboard input, do not quit |
4699 | since we want to return C-g as an input character. | |
4700 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4701 | if (read_kbd >= 0) |
ffd56f97 JB |
4702 | { |
4703 | /* Prevent input_pending from remaining set if we quit. */ | |
4704 | clear_input_pending (); | |
4705 | QUIT; | |
4706 | } | |
19310311 | 4707 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4708 | /* AlainF 5-Jul-1996 |
4709 | HP-UX 10.10 seems to have problems with signals coming in | |
4710 | Causes "poll: interrupted system call" messages when Emacs is run | |
4711 | in an X window | |
4712 | Turn periodic alarms back on */ | |
5d5beb62 | 4713 | start_polling (); |
19310311 | 4714 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
efa2a55c | 4715 | |
d0d6b7c5 JB |
4716 | return got_some_input; |
4717 | } | |
4718 | \f | |
3b9a3dfa RS |
4719 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4720 | ||
4721 | static Lisp_Object | |
4722 | read_process_output_call (fun_and_args) | |
4723 | Lisp_Object fun_and_args; | |
4724 | { | |
70949dac | 4725 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4726 | } |
4727 | ||
4728 | static Lisp_Object | |
4729 | read_process_output_error_handler (error) | |
4730 | Lisp_Object error; | |
4731 | { | |
4732 | cmd_error_internal (error, "error in process filter: "); | |
4733 | Vinhibit_quit = Qt; | |
4734 | update_echo_area (); | |
833ba342 | 4735 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4736 | return Qt; |
3b9a3dfa RS |
4737 | } |
4738 | ||
d0d6b7c5 JB |
4739 | /* Read pending output from the process channel, |
4740 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 4741 | Yield number of decoded characters read. |
d0d6b7c5 | 4742 | |
116c423c | 4743 | This function reads at most 4096 characters. |
d0d6b7c5 | 4744 | If you want to read all available subprocess output, |
0fa1789e KH |
4745 | you must call it repeatedly until it returns zero. |
4746 | ||
4747 | The characters read are decoded according to PROC's coding-system | |
4748 | for decoding. */ | |
d0d6b7c5 | 4749 | |
ff6daed3 | 4750 | static int |
d0d6b7c5 JB |
4751 | read_process_output (proc, channel) |
4752 | Lisp_Object proc; | |
4753 | register int channel; | |
4754 | { | |
e1283999 | 4755 | register int nbytes; |
d0d6b7c5 | 4756 | char *chars; |
d0d6b7c5 JB |
4757 | register Lisp_Object outstream; |
4758 | register struct buffer *old = current_buffer; | |
4759 | register struct Lisp_Process *p = XPROCESS (proc); | |
4760 | register int opoint; | |
c7580538 | 4761 | struct coding_system *coding = proc_decode_coding_system[channel]; |
e7fbaa65 | 4762 | int carryover = XINT (p->decoding_carryover); |
116c423c | 4763 | int readmax = 4096; |
d0d6b7c5 JB |
4764 | |
4765 | #ifdef VMS | |
4766 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); | |
4767 | ||
4768 | vs = get_vms_process_pointer (p->pid); | |
4769 | if (vs) | |
4770 | { | |
4771 | if (!vs->iosb[0]) | |
a319f7c1 | 4772 | return (0); /* Really weird if it does this */ |
d0d6b7c5 JB |
4773 | if (!(vs->iosb[0] & 1)) |
4774 | return -1; /* I/O error */ | |
4775 | } | |
4776 | else | |
4777 | error ("Could not get VMS process pointer"); | |
4778 | chars = vs->inputBuffer; | |
1d2fc612 RS |
4779 | nbytes = clean_vms_buffer (chars, vs->iosb[1]); |
4780 | if (nbytes <= 0) | |
d0d6b7c5 JB |
4781 | { |
4782 | start_vms_process_read (vs); /* Crank up the next read on the process */ | |
4783 | return 1; /* Nothing worth printing, say we got 1 */ | |
4784 | } | |
e7fbaa65 | 4785 | if (carryover > 0) |
0fa1789e | 4786 | { |
e7fbaa65 KH |
4787 | /* The data carried over in the previous decoding (which are at |
4788 | the tail of decoding buffer) should be prepended to the new | |
4789 | data read to decode all together. */ | |
ed7a4b2d | 4790 | chars = (char *) alloca (nbytes + carryover); |
d5db4077 | 4791 | bcopy (SDATA (p->decoding_buf), buf, carryover); |
ed7a4b2d | 4792 | bcopy (vs->inputBuffer, chars + carryover, nbytes); |
0fa1789e | 4793 | } |
d0d6b7c5 | 4794 | #else /* not VMS */ |
e690ca94 | 4795 | |
e690ca94 | 4796 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
4797 | if (carryover) |
4798 | /* See the comment above. */ | |
d5db4077 | 4799 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 4800 | |
e690ca94 KS |
4801 | #ifdef DATAGRAM_SOCKETS |
4802 | /* We have a working select, so proc_buffered_char is always -1. */ | |
4803 | if (DATAGRAM_CHAN_P (channel)) | |
4804 | { | |
4805 | int len = datagram_address[channel].len; | |
39b1da20 | 4806 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
4807 | 0, datagram_address[channel].sa, &len); |
4808 | } | |
4809 | else | |
4810 | #endif | |
d0d6b7c5 | 4811 | if (proc_buffered_char[channel] < 0) |
2d942bfa | 4812 | { |
39b1da20 | 4813 | nbytes = emacs_read (channel, chars + carryover, readmax); |
2d942bfa | 4814 | #ifdef ADAPTIVE_READ_BUFFERING |
39b1da20 | 4815 | if (nbytes > 0 && !NILP (p->adaptive_read_buffering)) |
2d942bfa KS |
4816 | { |
4817 | int delay = XINT (p->read_output_delay); | |
05b72afd | 4818 | if (nbytes < 256) |
2d942bfa KS |
4819 | { |
4820 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
4821 | { | |
4822 | if (delay == 0) | |
4823 | process_output_delay_count++; | |
4824 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
4825 | } | |
4826 | } | |
39b1da20 | 4827 | else if (delay > 0 && (nbytes == readmax)) |
2d942bfa KS |
4828 | { |
4829 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
4830 | if (delay == 0) | |
4831 | process_output_delay_count--; | |
4832 | } | |
4833 | XSETINT (p->read_output_delay, delay); | |
4834 | if (delay) | |
4835 | { | |
4836 | p->read_output_skip = Qt; | |
4837 | process_output_skip = 1; | |
4838 | } | |
4839 | } | |
4840 | #endif | |
4841 | } | |
d0d6b7c5 JB |
4842 | else |
4843 | { | |
ed7a4b2d | 4844 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 4845 | proc_buffered_char[channel] = -1; |
39b1da20 | 4846 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
4847 | if (nbytes < 0) |
4848 | nbytes = 1; | |
d0d6b7c5 | 4849 | else |
1d2fc612 | 4850 | nbytes = nbytes + 1; |
d0d6b7c5 JB |
4851 | } |
4852 | #endif /* not VMS */ | |
4853 | ||
ca65341e KH |
4854 | XSETINT (p->decoding_carryover, 0); |
4855 | ||
ed7a4b2d | 4856 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 4857 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
4858 | if (nbytes <= 0) |
4859 | { | |
4860 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
4861 | return nbytes; | |
4862 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
4863 | } | |
d0d6b7c5 | 4864 | |
1d2fc612 | 4865 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 4866 | nbytes += carryover; |
0fa1789e | 4867 | |
1d2fc612 | 4868 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
4869 | outstream = p->filter; |
4870 | if (!NILP (outstream)) | |
4871 | { | |
177c0ea7 | 4872 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
4873 | hitting ^G when a filter happens to be running won't screw |
4874 | it up. */ | |
aed13378 | 4875 | int count = SPECPDL_INDEX (); |
30c78175 | 4876 | Lisp_Object odeactivate; |
dfc21838 | 4877 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 4878 | Lisp_Object text; |
4da2f5be | 4879 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 4880 | int waiting = waiting_for_user_input_p; |
30c78175 | 4881 | |
dfc21838 RS |
4882 | /* No need to gcpro these, because all we do with them later |
4883 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 4884 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
4885 | XSETBUFFER (obuffer, current_buffer); |
4886 | okeymap = current_buffer->keymap; | |
30c78175 | 4887 | |
d0d6b7c5 | 4888 | specbind (Qinhibit_quit, Qt); |
6545aada | 4889 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 4890 | |
4da2f5be RS |
4891 | /* In case we get recursively called, |
4892 | and we already saved the match data nonrecursively, | |
4893 | save the same match data in safely recursive fashion. */ | |
4894 | if (outer_running_asynch_code) | |
4895 | { | |
4896 | Lisp_Object tem; | |
4897 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
4898 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
4899 | restore_search_regs (); | |
4900 | record_unwind_save_match_data (); | |
4901 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
4902 | } |
4903 | ||
4904 | /* For speed, if a search happens within this code, | |
4905 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 4906 | running_asynch_code = 1; |
4da2f5be | 4907 | |
ed7a4b2d KH |
4908 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
4909 | coding, 0); | |
082a1df2 | 4910 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
4911 | /* A new coding system might be found. */ |
4912 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
4913 | { | |
4914 | p->decode_coding_system = coding->symbol; | |
4915 | ||
4916 | /* Don't call setup_coding_system for | |
4917 | proc_decode_coding_system[channel] here. It is done in | |
4918 | detect_coding called via decode_coding above. */ | |
4919 | ||
4920 | /* If a coding system for encoding is not yet decided, we set | |
4921 | it as the same as coding-system for decoding. | |
4922 | ||
4923 | But, before doing that we must check if | |
4924 | proc_encode_coding_system[p->outfd] surely points to a | |
4925 | valid memory because p->outfd will be changed once EOF is | |
4926 | sent to the process. */ | |
4927 | if (NILP (p->encode_coding_system) | |
4928 | && proc_encode_coding_system[XINT (p->outfd)]) | |
4929 | { | |
4930 | p->encode_coding_system = coding->symbol; | |
4931 | setup_coding_system (coding->symbol, | |
4932 | proc_encode_coding_system[XINT (p->outfd)]); | |
4933 | } | |
4934 | } | |
51c6067d | 4935 | |
ed7a4b2d | 4936 | carryover = nbytes - coding->consumed; |
d7d2483a KS |
4937 | if (SCHARS (p->decoding_buf) < carryover) |
4938 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 4939 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
4940 | carryover); |
4941 | XSETINT (p->decoding_carryover, carryover); | |
03f04413 KH |
4942 | /* Adjust the multibyteness of TEXT to that of the filter. */ |
4943 | if (NILP (p->filter_multibyte) != ! STRING_MULTIBYTE (text)) | |
4944 | text = (STRING_MULTIBYTE (text) | |
4945 | ? Fstring_as_unibyte (text) | |
4946 | : Fstring_to_multibyte (text)); | |
e430e5ba | 4947 | if (SBYTES (text) > 0) |
dd97db06 KH |
4948 | internal_condition_case_1 (read_process_output_call, |
4949 | Fcons (outstream, | |
4950 | Fcons (proc, Fcons (text, Qnil))), | |
4951 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
4952 | read_process_output_error_handler); | |
4da2f5be RS |
4953 | |
4954 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 4955 | restore_search_regs (); |
4da2f5be | 4956 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 4957 | |
592ce97f | 4958 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
4959 | Vdeactivate_mark = odeactivate; |
4960 | ||
bbce7d72 RS |
4961 | /* Restore waiting_for_user_input_p as it was |
4962 | when we were called, in case the filter clobbered it. */ | |
4963 | waiting_for_user_input_p = waiting; | |
4964 | ||
7973cfa8 RS |
4965 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
4966 | because we might have changed minor modes or other things | |
4967 | that affect key bindings. */ | |
dfc21838 RS |
4968 | if (! EQ (Fcurrent_buffer (), obuffer) |
4969 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 4970 | #endif |
927e08be RS |
4971 | /* But do it only if the caller is actually going to read events. |
4972 | Otherwise there's no need to make him wake up, and it could | |
4973 | cause trouble (for example it would make Fsit_for return). */ | |
4974 | if (waiting_for_user_input_p == -1) | |
4975 | record_asynch_buffer_change (); | |
d72534ba | 4976 | |
d0d6b7c5 JB |
4977 | #ifdef VMS |
4978 | start_vms_process_read (vs); | |
4979 | #endif | |
2ea6d561 | 4980 | unbind_to (count, Qnil); |
e430e5ba | 4981 | return nbytes; |
d0d6b7c5 JB |
4982 | } |
4983 | ||
4984 | /* If no filter, write into buffer if it isn't dead. */ | |
4985 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
4986 | { | |
b0310da4 | 4987 | Lisp_Object old_read_only; |
12ca5cdf | 4988 | int old_begv, old_zv; |
d8a2934e | 4989 | int old_begv_byte, old_zv_byte; |
30c78175 | 4990 | Lisp_Object odeactivate; |
d8a2934e RS |
4991 | int before, before_byte; |
4992 | int opoint_byte; | |
ed7a4b2d | 4993 | Lisp_Object text; |
926b7e5e | 4994 | struct buffer *b; |
30c78175 RS |
4995 | |
4996 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 JB |
4997 | |
4998 | Fset_buffer (p->buffer); | |
6ec8bbd2 | 4999 | opoint = PT; |
d8a2934e | 5000 | opoint_byte = PT_BYTE; |
b0310da4 | 5001 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
5002 | old_begv = BEGV; |
5003 | old_zv = ZV; | |
d8a2934e RS |
5004 | old_begv_byte = BEGV_BYTE; |
5005 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
5006 | |
5007 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
5008 | |
5009 | /* Insert new output into buffer | |
5010 | at the current end-of-output marker, | |
5011 | thus preserving logical ordering of input and output. */ | |
5012 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5013 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5014 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5015 | ZV_BYTE)); | |
d0d6b7c5 | 5016 | else |
d8a2934e | 5017 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5018 | before = PT; |
d8a2934e | 5019 | before_byte = PT_BYTE; |
b0310da4 JB |
5020 | |
5021 | /* If the output marker is outside of the visible region, save | |
5022 | the restriction and widen. */ | |
6ec8bbd2 | 5023 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5024 | Fwiden (); |
5025 | ||
ed7a4b2d KH |
5026 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
5027 | coding, 0); | |
082a1df2 | 5028 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
5029 | /* A new coding system might be found. See the comment in the |
5030 | similar code in the previous `if' block. */ | |
5031 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
5032 | { | |
5033 | p->decode_coding_system = coding->symbol; | |
5034 | if (NILP (p->encode_coding_system) | |
5035 | && proc_encode_coding_system[XINT (p->outfd)]) | |
5036 | { | |
5037 | p->encode_coding_system = coding->symbol; | |
5038 | setup_coding_system (coding->symbol, | |
5039 | proc_encode_coding_system[XINT (p->outfd)]); | |
5040 | } | |
5041 | } | |
5042 | carryover = nbytes - coding->consumed; | |
d7d2483a KS |
5043 | if (SCHARS (p->decoding_buf) < carryover) |
5044 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 5045 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
5046 | carryover); |
5047 | XSETINT (p->decoding_carryover, carryover); | |
d69864bf KH |
5048 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5049 | if (NILP (current_buffer->enable_multibyte_characters) | |
5050 | != ! STRING_MULTIBYTE (text)) | |
5051 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5052 | ? Fstring_as_unibyte (text) |
03f04413 | 5053 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5054 | /* Insert before markers in case we are inserting where |
5055 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5056 | insert_from_string_before_markers (text, 0, 0, |
5057 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5058 | |
926b7e5e GM |
5059 | /* Make sure the process marker's position is valid when the |
5060 | process buffer is changed in the signal_after_change above. | |
5061 | W3 is known to do that. */ | |
5062 | if (BUFFERP (p->buffer) | |
5063 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5064 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5065 | else | |
5066 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5067 | |
d0d6b7c5 JB |
5068 | update_mode_lines++; |
5069 | ||
12ca5cdf RS |
5070 | /* Make sure opoint and the old restrictions |
5071 | float ahead of any new text just as point would. */ | |
5072 | if (opoint >= before) | |
d8a2934e RS |
5073 | { |
5074 | opoint += PT - before; | |
5075 | opoint_byte += PT_BYTE - before_byte; | |
5076 | } | |
12ca5cdf | 5077 | if (old_begv > before) |
d8a2934e RS |
5078 | { |
5079 | old_begv += PT - before; | |
5080 | old_begv_byte += PT_BYTE - before_byte; | |
5081 | } | |
12ca5cdf | 5082 | if (old_zv >= before) |
d8a2934e RS |
5083 | { |
5084 | old_zv += PT - before; | |
5085 | old_zv_byte += PT_BYTE - before_byte; | |
5086 | } | |
12ca5cdf | 5087 | |
b0310da4 | 5088 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5089 | if (old_begv != BEGV || old_zv != ZV) |
5090 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5091 | |
592ce97f | 5092 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5093 | Vdeactivate_mark = odeactivate; |
5094 | ||
b0310da4 | 5095 | current_buffer->read_only = old_read_only; |
d8a2934e | 5096 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 JB |
5097 | set_buffer_internal (old); |
5098 | } | |
5099 | #ifdef VMS | |
5100 | start_vms_process_read (vs); | |
5101 | #endif | |
1d2fc612 | 5102 | return nbytes; |
d0d6b7c5 JB |
5103 | } |
5104 | ||
5105 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
5106 | 0, 0, 0, | |
f3d9532b | 5107 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
fdb82f93 PJ |
5108 | This is intended for use by asynchronous process output filters and sentinels. */) |
5109 | () | |
d0d6b7c5 | 5110 | { |
8b4d685f | 5111 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
5112 | } |
5113 | \f | |
5114 | /* Sending data to subprocess */ | |
5115 | ||
5116 | jmp_buf send_process_frame; | |
0daad115 | 5117 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5118 | |
5119 | SIGTYPE | |
5120 | send_process_trap () | |
5121 | { | |
333f1b6f | 5122 | SIGNAL_THREAD_CHECK (SIGPIPE); |
d0d6b7c5 JB |
5123 | #ifdef BSD4_1 |
5124 | sigrelse (SIGPIPE); | |
5125 | sigrelse (SIGALRM); | |
5126 | #endif /* BSD4_1 */ | |
c8f44005 | 5127 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5128 | longjmp (send_process_frame, 1); |
5129 | } | |
5130 | ||
4556b700 RS |
5131 | /* Send some data to process PROC. |
5132 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5133 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5134 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5135 | |
a92e4183 KH |
5136 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5137 | for encoding before it is sent. | |
1fb0098c GM |
5138 | |
5139 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5140 | |
ff6daed3 | 5141 | static void |
4556b700 | 5142 | send_process (proc, buf, len, object) |
ecd1f654 | 5143 | volatile Lisp_Object proc; |
0daad115 GM |
5144 | unsigned char *volatile buf; |
5145 | volatile int len; | |
5146 | volatile Lisp_Object object; | |
d0d6b7c5 | 5147 | { |
ecd1f654 | 5148 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
2d942bfa | 5149 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5150 | int rv; |
0fa1789e | 5151 | struct coding_system *coding; |
6044e593 | 5152 | struct gcpro gcpro1; |
41c4895c | 5153 | SIGTYPE (*volatile old_sigpipe) (); |
6044e593 RS |
5154 | |
5155 | GCPRO1 (object); | |
d0d6b7c5 | 5156 | |
d0d6b7c5 | 5157 | #ifdef VMS |
d0d6b7c5 JB |
5158 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); |
5159 | #endif /* VMS */ | |
5160 | ||
2d942bfa KS |
5161 | if (! NILP (p->raw_status_low)) |
5162 | update_status (p); | |
5163 | if (! EQ (p->status, Qrun)) | |
5164 | error ("Process %s not running", SDATA (p->name)); | |
5165 | if (XINT (p->outfd) < 0) | |
5166 | error ("Output file descriptor of %s is closed", SDATA (p->name)); | |
0fa1789e | 5167 | |
2d942bfa | 5168 | coding = proc_encode_coding_system[XINT (p->outfd)]; |
486b111b KH |
5169 | Vlast_coding_system_used = coding->symbol; |
5170 | ||
ed7a4b2d KH |
5171 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5172 | || (BUFFERP (object) | |
a92e4183 KH |
5173 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5174 | || EQ (object, Qt)) | |
278bfdd6 | 5175 | { |
2d942bfa | 5176 | if (!EQ (coding->symbol, p->encode_coding_system)) |
278bfdd6 KH |
5177 | /* The coding system for encoding was changed to raw-text |
5178 | because we sent a unibyte text previously. Now we are | |
5179 | sending a multibyte text, thus we must encode it by the | |
2d942bfa KS |
5180 | original coding system specified for the current process. */ |
5181 | setup_coding_system (p->encode_coding_system, coding); | |
fbb70ad9 EZ |
5182 | /* src_multibyte should be set to 1 _after_ a call to |
5183 | setup_coding_system, since it resets src_multibyte to | |
5184 | zero. */ | |
5185 | coding->src_multibyte = 1; | |
278bfdd6 KH |
5186 | } |
5187 | else | |
5188 | { | |
a92e4183 KH |
5189 | /* For sending a unibyte text, character code conversion should |
5190 | not take place but EOL conversion should. So, setup raw-text | |
5191 | or one of the subsidiary if we have not yet done it. */ | |
5192 | if (coding->type != coding_type_raw_text) | |
5193 | { | |
5194 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5195 | { | |
5196 | /* But, before changing the coding, we must flush out data. */ | |
5197 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5198 | send_process (proc, "", 0, Qt); | |
5199 | } | |
5200 | coding->src_multibyte = 0; | |
5201 | setup_raw_text_coding_system (coding); | |
5202 | } | |
278bfdd6 | 5203 | } |
a4a37e65 KH |
5204 | coding->dst_multibyte = 0; |
5205 | ||
ed7a4b2d | 5206 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e KH |
5207 | { |
5208 | int require = encoding_buffer_size (coding, len); | |
0daad115 | 5209 | int from_byte = -1, from = -1, to = -1; |
0fa1789e | 5210 | |
ed7a4b2d | 5211 | if (BUFFERP (object)) |
0fa1789e | 5212 | { |
ed7a4b2d KH |
5213 | from_byte = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5214 | from = buf_bytepos_to_charpos (XBUFFER (object), from_byte); | |
5215 | to = buf_bytepos_to_charpos (XBUFFER (object), from_byte + len); | |
5216 | } | |
5217 | else if (STRINGP (object)) | |
5218 | { | |
d5db4077 | 5219 | from_byte = buf - SDATA (object); |
ed7a4b2d KH |
5220 | from = string_byte_to_char (object, from_byte); |
5221 | to = string_byte_to_char (object, from_byte + len); | |
0fa1789e KH |
5222 | } |
5223 | ||
452294c2 GM |
5224 | if (coding->composing != COMPOSITION_DISABLED) |
5225 | { | |
5226 | if (from_byte >= 0) | |
5227 | coding_save_composition (coding, from, to, object); | |
5228 | else | |
5229 | coding->composing = COMPOSITION_DISABLED; | |
5230 | } | |
ed7a4b2d | 5231 | |
2d942bfa KS |
5232 | if (SBYTES (p->encoding_buf) < require) |
5233 | p->encoding_buf = make_uninit_string (require); | |
ed7a4b2d KH |
5234 | |
5235 | if (from_byte >= 0) | |
5236 | buf = (BUFFERP (object) | |
5237 | ? BUF_BYTE_ADDRESS (XBUFFER (object), from_byte) | |
d5db4077 | 5238 | : SDATA (object) + from_byte); |
0fa1789e | 5239 | |
2d942bfa | 5240 | object = p->encoding_buf; |
d5db4077 KR |
5241 | encode_coding (coding, (char *) buf, SDATA (object), |
5242 | len, SBYTES (object)); | |
9de36315 | 5243 | coding_free_composition_data (coding); |
e7fbaa65 | 5244 | len = coding->produced; |
d5db4077 | 5245 | buf = SDATA (object); |
0fa1789e | 5246 | } |
d0d6b7c5 JB |
5247 | |
5248 | #ifdef VMS | |
5249 | vs = get_vms_process_pointer (p->pid); | |
5250 | if (vs == 0) | |
5251 | error ("Could not find this process: %x", p->pid); | |
5252 | else if (write_to_vms_process (vs, buf, len)) | |
5253 | ; | |
0daad115 | 5254 | #else /* not VMS */ |
4556b700 RS |
5255 | |
5256 | if (pty_max_bytes == 0) | |
5257 | { | |
5258 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
2d942bfa | 5259 | pty_max_bytes = fpathconf (XFASTINT (p->outfd), _PC_MAX_CANON); |
4556b700 RS |
5260 | if (pty_max_bytes < 0) |
5261 | pty_max_bytes = 250; | |
5262 | #else | |
5263 | pty_max_bytes = 250; | |
5264 | #endif | |
5265 | /* Deduct one, to leave space for the eof. */ | |
5266 | pty_max_bytes--; | |
5267 | } | |
5268 | ||
0daad115 GM |
5269 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5270 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5271 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5272 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5273 | { |
5274 | process_sent_to = proc; | |
5275 | while (len > 0) | |
5276 | { | |
5277 | int this = len; | |
93b4f699 | 5278 | |
0daad115 GM |
5279 | /* Decide how much data we can send in one batch. |
5280 | Long lines need to be split into multiple batches. */ | |
2d942bfa | 5281 | if (!NILP (p->pty_flag)) |
0daad115 | 5282 | { |
c0ec53ad SM |
5283 | /* Starting this at zero is always correct when not the first |
5284 | iteration because the previous iteration ended by sending C-d. | |
0daad115 GM |
5285 | It may not be correct for the first iteration |
5286 | if a partial line was sent in a separate send_process call. | |
5287 | If that proves worth handling, we need to save linepos | |
5288 | in the process object. */ | |
5289 | int linepos = 0; | |
5290 | unsigned char *ptr = (unsigned char *) buf; | |
5291 | unsigned char *end = (unsigned char *) buf + len; | |
5292 | ||
5293 | /* Scan through this text for a line that is too long. */ | |
5294 | while (ptr != end && linepos < pty_max_bytes) | |
5295 | { | |
5296 | if (*ptr == '\n') | |
5297 | linepos = 0; | |
5298 | else | |
5299 | linepos++; | |
5300 | ptr++; | |
5301 | } | |
5302 | /* If we found one, break the line there | |
5303 | and put in a C-d to force the buffer through. */ | |
5304 | this = ptr - buf; | |
5305 | } | |
93b4f699 | 5306 | |
0daad115 GM |
5307 | /* Send this batch, using one or more write calls. */ |
5308 | while (this > 0) | |
5309 | { | |
2d942bfa | 5310 | int outfd = XINT (p->outfd); |
0daad115 | 5311 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5312 | #ifdef DATAGRAM_SOCKETS |
5313 | if (DATAGRAM_CHAN_P (outfd)) | |
5314 | { | |
5315 | rv = sendto (outfd, (char *) buf, this, | |
5316 | 0, datagram_address[outfd].sa, | |
5317 | datagram_address[outfd].len); | |
5318 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5319 | { |
5320 | signal (SIGPIPE, old_sigpipe); | |
5321 | report_file_error ("sending datagram", | |
5322 | Fcons (proc, Qnil)); | |
5323 | } | |
e690ca94 KS |
5324 | } |
5325 | else | |
5326 | #endif | |
2d942bfa KS |
5327 | { |
5328 | rv = emacs_write (outfd, (char *) buf, this); | |
5329 | #ifdef ADAPTIVE_READ_BUFFERING | |
5330 | if (XINT (p->read_output_delay) > 0 | |
5331 | && EQ (p->adaptive_read_buffering, Qt)) | |
5332 | { | |
5333 | XSETFASTINT (p->read_output_delay, 0); | |
5334 | process_output_delay_count--; | |
5335 | p->read_output_skip = Qnil; | |
5336 | } | |
5337 | #endif | |
5338 | } | |
0daad115 | 5339 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5340 | |
0daad115 GM |
5341 | if (rv < 0) |
5342 | { | |
5343 | if (0 | |
d0d6b7c5 | 5344 | #ifdef EWOULDBLOCK |
0daad115 | 5345 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5346 | #endif |
5347 | #ifdef EAGAIN | |
0daad115 | 5348 | || errno == EAGAIN |
d0d6b7c5 | 5349 | #endif |
0daad115 | 5350 | ) |
177c0ea7 | 5351 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5352 | that may allow the program |
5353 | to finish doing output and read more. */ | |
5354 | { | |
0daad115 | 5355 | int offset = 0; |
4556b700 | 5356 | |
3433b6bd | 5357 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5358 | /* A gross hack to work around a bug in FreeBSD. |
5359 | In the following sequence, read(2) returns | |
5360 | bogus data: | |
5361 | ||
5362 | write(2) 1022 bytes | |
5363 | write(2) 954 bytes, get EAGAIN | |
5364 | read(2) 1024 bytes in process_read_output | |
5365 | read(2) 11 bytes in process_read_output | |
5366 | ||
5367 | That is, read(2) returns more bytes than have | |
5368 | ever been written successfully. The 1033 bytes | |
5369 | read are the 1022 bytes written successfully | |
5370 | after processing (for example with CRs added if | |
5371 | the terminal is set up that way which it is | |
5372 | here). The same bytes will be seen again in a | |
5373 | later read(2), without the CRs. */ | |
177c0ea7 | 5374 | |
0daad115 GM |
5375 | if (errno == EAGAIN) |
5376 | { | |
5377 | int flags = FWRITE; | |
2d942bfa | 5378 | ioctl (XINT (p->outfd), TIOCFLUSH, &flags); |
0daad115 | 5379 | } |
3433b6bd | 5380 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5381 | |
0daad115 GM |
5382 | /* Running filters might relocate buffers or strings. |
5383 | Arrange to relocate BUF. */ | |
5384 | if (BUFFERP (object)) | |
5385 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); | |
5386 | else if (STRINGP (object)) | |
d5db4077 | 5387 | offset = buf - SDATA (object); |
0daad115 | 5388 | |
f3e6605c | 5389 | #ifdef EMACS_HAS_USECS |
214d6069 | 5390 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5391 | #else |
214d6069 | 5392 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5393 | #endif |
4556b700 | 5394 | |
0daad115 GM |
5395 | if (BUFFERP (object)) |
5396 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); | |
5397 | else if (STRINGP (object)) | |
d5db4077 | 5398 | buf = offset + SDATA (object); |
4556b700 | 5399 | |
0daad115 GM |
5400 | rv = 0; |
5401 | } | |
5402 | else | |
5403 | /* This is a real error. */ | |
5404 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5405 | } | |
5406 | buf += rv; | |
5407 | len -= rv; | |
5408 | this -= rv; | |
5409 | } | |
f76475ad | 5410 | |
0daad115 GM |
5411 | /* If we sent just part of the string, put in an EOF |
5412 | to force it through, before we send the rest. */ | |
5413 | if (len > 0) | |
5414 | Fprocess_send_eof (proc); | |
5415 | } | |
5416 | } | |
5417 | #endif /* not VMS */ | |
d0d6b7c5 JB |
5418 | else |
5419 | { | |
0ff69270 | 5420 | signal (SIGPIPE, old_sigpipe); |
0daad115 GM |
5421 | #ifndef VMS |
5422 | proc = process_sent_to; | |
2d942bfa | 5423 | p = XPROCESS (proc); |
0daad115 | 5424 | #endif |
2d942bfa KS |
5425 | p->raw_status_low = Qnil; |
5426 | p->raw_status_high = Qnil; | |
5427 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5428 | XSETINT (p->tick, ++process_tick); | |
d0d6b7c5 JB |
5429 | deactivate_process (proc); |
5430 | #ifdef VMS | |
2d942bfa | 5431 | error ("Error writing to process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5432 | #else |
2d942bfa | 5433 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5434 | #endif |
5435 | } | |
6044e593 RS |
5436 | |
5437 | UNGCPRO; | |
d0d6b7c5 JB |
5438 | } |
5439 | ||
5440 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5441 | 3, 3, 0, |
5442 | doc: /* Send current contents of region as input to PROCESS. | |
5443 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5444 | nil, indicating the current buffer's process. | |
5445 | Called from program, takes three arguments, PROCESS, START and END. | |
5446 | If the region is more than 500 characters long, | |
5447 | it is sent in several bunches. This may happen even for shorter regions. | |
5448 | Output from processes can arrive in between bunches. */) | |
5449 | (process, start, end) | |
d0d6b7c5 JB |
5450 | Lisp_Object process, start, end; |
5451 | { | |
5452 | Lisp_Object proc; | |
d8a2934e | 5453 | int start1, end1; |
d0d6b7c5 JB |
5454 | |
5455 | proc = get_process (process); | |
5456 | validate_region (&start, &end); | |
5457 | ||
5458 | if (XINT (start) < GPT && XINT (end) > GPT) | |
4da6dec8 | 5459 | move_gap (XINT (start)); |
d0d6b7c5 | 5460 | |
d8a2934e RS |
5461 | start1 = CHAR_TO_BYTE (XINT (start)); |
5462 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5463 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
4556b700 | 5464 | Fcurrent_buffer ()); |
d0d6b7c5 JB |
5465 | |
5466 | return Qnil; | |
5467 | } | |
5468 | ||
5469 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5470 | 2, 2, 0, |
5471 | doc: /* Send PROCESS the contents of STRING as input. | |
5472 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5473 | nil, indicating the current buffer's process. | |
5474 | If STRING is more than 500 characters long, | |
5475 | it is sent in several bunches. This may happen even for shorter strings. | |
5476 | Output from processes can arrive in between bunches. */) | |
5477 | (process, string) | |
d0d6b7c5 JB |
5478 | Lisp_Object process, string; |
5479 | { | |
5480 | Lisp_Object proc; | |
b7826503 | 5481 | CHECK_STRING (string); |
d0d6b7c5 | 5482 | proc = get_process (process); |
d5db4077 KR |
5483 | send_process (proc, SDATA (string), |
5484 | SBYTES (string), string); | |
d0d6b7c5 JB |
5485 | return Qnil; |
5486 | } | |
5487 | \f | |
16782258 JD |
5488 | /* Return the foreground process group for the tty/pty that |
5489 | the process P uses. */ | |
5490 | static int | |
5491 | emacs_get_tty_pgrp (p) | |
5492 | struct Lisp_Process *p; | |
5493 | { | |
5494 | int gid = -1; | |
5495 | ||
f3d9532b | 5496 | #ifdef TIOCGPGRP |
16782258 JD |
5497 | if (ioctl (XINT (p->infd), TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
5498 | { | |
5499 | int fd; | |
5500 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5501 | master side. Try the slave side. */ | |
5502 | fd = emacs_open (XSTRING (p->tty_name)->data, O_RDONLY, 0); | |
5503 | ||
5504 | if (fd != -1) | |
5505 | { | |
5506 | ioctl (fd, TIOCGPGRP, &gid); | |
5507 | emacs_close (fd); | |
5508 | } | |
5509 | } | |
5510 | #endif /* defined (TIOCGPGRP ) */ | |
5511 | ||
5512 | return gid; | |
5513 | } | |
5514 | ||
b81ea5ef RS |
5515 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5516 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5517 | doc: /* Return t if PROCESS has given the terminal to a child. |
5518 | If the operating system does not make it possible to find out, | |
5519 | return t unconditionally. */) | |
5520 | (process) | |
b81ea5ef RS |
5521 | Lisp_Object process; |
5522 | { | |
5523 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5524 | in a way that will cause returning t. */ | |
16782258 | 5525 | int gid; |
b81ea5ef RS |
5526 | Lisp_Object proc; |
5527 | struct Lisp_Process *p; | |
5528 | ||
5529 | proc = get_process (process); | |
5530 | p = XPROCESS (proc); | |
5531 | ||
5532 | if (!EQ (p->childp, Qt)) | |
5533 | error ("Process %s is not a subprocess", | |
d5db4077 | 5534 | SDATA (p->name)); |
b81ea5ef RS |
5535 | if (XINT (p->infd) < 0) |
5536 | error ("Process %s is not active", | |
d5db4077 | 5537 | SDATA (p->name)); |
b81ea5ef | 5538 | |
16782258 | 5539 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef RS |
5540 | |
5541 | if (gid == XFASTINT (p->pid)) | |
5542 | return Qnil; | |
5543 | return Qt; | |
5544 | } | |
5545 | \f | |
d0d6b7c5 | 5546 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5547 | If CURRENT_GROUP is t, that means send to the process group |
5548 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5549 | This is used for various commands in shell mode. |
b81ea5ef RS |
5550 | If CURRENT_GROUP is lambda, that means send to the process group |
5551 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5552 | ||
d0d6b7c5 | 5553 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5554 | right away. |
5555 | ||
5556 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5557 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5558 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5559 | |
f9738840 | 5560 | static void |
d0d6b7c5 JB |
5561 | process_send_signal (process, signo, current_group, nomsg) |
5562 | Lisp_Object process; | |
5563 | int signo; | |
5564 | Lisp_Object current_group; | |
5565 | int nomsg; | |
5566 | { | |
5567 | Lisp_Object proc; | |
5568 | register struct Lisp_Process *p; | |
5569 | int gid; | |
5570 | int no_pgrp = 0; | |
5571 | ||
5572 | proc = get_process (process); | |
5573 | p = XPROCESS (proc); | |
5574 | ||
5575 | if (!EQ (p->childp, Qt)) | |
5576 | error ("Process %s is not a subprocess", | |
d5db4077 | 5577 | SDATA (p->name)); |
a9f2c884 | 5578 | if (XINT (p->infd) < 0) |
d0d6b7c5 | 5579 | error ("Process %s is not active", |
d5db4077 | 5580 | SDATA (p->name)); |
d0d6b7c5 JB |
5581 | |
5582 | if (NILP (p->pty_flag)) | |
5583 | current_group = Qnil; | |
5584 | ||
d0d6b7c5 | 5585 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5586 | if (NILP (current_group)) |
5587 | /* Send the signal to the shell's process group. */ | |
5588 | gid = XFASTINT (p->pid); | |
5589 | else | |
d0d6b7c5 | 5590 | { |
b0310da4 | 5591 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5592 | /* If possible, send signals to the entire pgrp |
5593 | by sending an input character to it. */ | |
b0310da4 | 5594 | |
6be429b1 JB |
5595 | /* TERMIOS is the latest and bestest, and seems most likely to |
5596 | work. If the system has it, use it. */ | |
5597 | #ifdef HAVE_TERMIOS | |
5598 | struct termios t; | |
7f916a36 RS |
5599 | cc_t *sig_char = NULL; |
5600 | ||
5601 | tcgetattr (XINT (p->infd), &t); | |
6be429b1 JB |
5602 | |
5603 | switch (signo) | |
5604 | { | |
5605 | case SIGINT: | |
7f916a36 RS |
5606 | sig_char = &t.c_cc[VINTR]; |
5607 | break; | |
6be429b1 JB |
5608 | |
5609 | case SIGQUIT: | |
7f916a36 RS |
5610 | sig_char = &t.c_cc[VQUIT]; |
5611 | break; | |
6be429b1 JB |
5612 | |
5613 | case SIGTSTP: | |
d0adf46f | 5614 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5615 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5616 | #else |
7f916a36 | 5617 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5618 | #endif |
7f916a36 | 5619 | break; |
6be429b1 JB |
5620 | } |
5621 | ||
ca4313d5 | 5622 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5623 | { |
5624 | send_process (proc, sig_char, 1, Qnil); | |
5625 | return; | |
5626 | } | |
5627 | /* If we can't send the signal with a character, | |
5628 | fall through and send it another way. */ | |
6be429b1 JB |
5629 | #else /* ! HAVE_TERMIOS */ |
5630 | ||
b0310da4 JB |
5631 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5632 | current control characters. */ | |
d0d6b7c5 | 5633 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5634 | |
d0d6b7c5 JB |
5635 | struct tchars c; |
5636 | struct ltchars lc; | |
5637 | ||
5638 | switch (signo) | |
5639 | { | |
5640 | case SIGINT: | |
a9f2c884 | 5641 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5642 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 5643 | return; |
d0d6b7c5 | 5644 | case SIGQUIT: |
a9f2c884 | 5645 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5646 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 5647 | return; |
0ad77c54 | 5648 | #ifdef SIGTSTP |
d0d6b7c5 | 5649 | case SIGTSTP: |
a9f2c884 | 5650 | ioctl (XINT (p->infd), TIOCGLTC, &lc); |
4556b700 | 5651 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 5652 | return; |
b0310da4 | 5653 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5654 | } |
b0310da4 JB |
5655 | |
5656 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
5657 | ||
5658 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
5659 | characters. */ | |
5660 | #ifdef TCGETA | |
d0d6b7c5 JB |
5661 | struct termio t; |
5662 | switch (signo) | |
5663 | { | |
5664 | case SIGINT: | |
a9f2c884 | 5665 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5666 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 5667 | return; |
d0d6b7c5 | 5668 | case SIGQUIT: |
a9f2c884 | 5669 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5670 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 5671 | return; |
7d79e3b4 | 5672 | #ifdef SIGTSTP |
d0d6b7c5 | 5673 | case SIGTSTP: |
a9f2c884 | 5674 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5675 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 5676 | return; |
b0310da4 | 5677 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5678 | } |
b0310da4 JB |
5679 | #else /* ! defined (TCGETA) */ |
5680 | Your configuration files are messed up. | |
5681 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
5682 | you'd better be using one of the alternatives above! */ | |
5683 | #endif /* ! defined (TCGETA) */ | |
5684 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
f1c206fc | 5685 | /* In this case, the code above should alway returns. */ |
20505336 | 5686 | abort (); |
f1c206fc RS |
5687 | #endif /* ! defined HAVE_TERMIOS */ |
5688 | ||
5689 | /* The code above may fall through if it can't | |
5690 | handle the signal. */ | |
20505336 | 5691 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5692 | |
177c0ea7 | 5693 | #ifdef TIOCGPGRP |
2af70a0c | 5694 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5695 | Otherwise, use the pty to get the pgrp. |
5696 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5697 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5698 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5699 | His patch indicates that if TIOCGPGRP returns an error, then |
5700 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5701 | |
16782258 | 5702 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5703 | |
16782258 JD |
5704 | if (gid == -1) |
5705 | /* If we can't get the information, assume | |
5706 | the shell owns the tty. */ | |
5707 | gid = XFASTINT (p->pid); | |
2af70a0c RS |
5708 | |
5709 | /* It is not clear whether anything really can set GID to -1. | |
5710 | Perhaps on some system one of those ioctls can or could do so. | |
5711 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5712 | if (gid == -1) |
5713 | no_pgrp = 1; | |
b0310da4 | 5714 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5715 | /* Can't select pgrps on this system, so we know that |
5716 | the child itself heads the pgrp. */ | |
2af70a0c | 5717 | gid = XFASTINT (p->pid); |
301c3fe4 | 5718 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5719 | |
5720 | /* If current_group is lambda, and the shell owns the terminal, | |
5721 | don't send any signal. */ | |
2af70a0c | 5722 | if (EQ (current_group, Qlambda) && gid == XFASTINT (p->pid)) |
b81ea5ef | 5723 | return; |
d0d6b7c5 | 5724 | } |
d0d6b7c5 JB |
5725 | |
5726 | switch (signo) | |
5727 | { | |
5728 | #ifdef SIGCONT | |
5729 | case SIGCONT: | |
5730 | p->raw_status_low = Qnil; | |
5731 | p->raw_status_high = Qnil; | |
5732 | p->status = Qrun; | |
5733 | XSETINT (p->tick, ++process_tick); | |
5734 | if (!nomsg) | |
ff6daed3 | 5735 | status_notify (NULL); |
d0d6b7c5 | 5736 | break; |
301c3fe4 | 5737 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 JB |
5738 | case SIGINT: |
5739 | #ifdef VMS | |
4556b700 | 5740 | send_process (proc, "\003", 1, Qnil); /* ^C */ |
d0d6b7c5 JB |
5741 | goto whoosh; |
5742 | #endif | |
5743 | case SIGQUIT: | |
5744 | #ifdef VMS | |
4556b700 | 5745 | send_process (proc, "\031", 1, Qnil); /* ^Y */ |
d0d6b7c5 JB |
5746 | goto whoosh; |
5747 | #endif | |
5748 | case SIGKILL: | |
5749 | #ifdef VMS | |
5750 | sys$forcex (&(XFASTINT (p->pid)), 0, 1); | |
5751 | whoosh: | |
5752 | #endif | |
a9f2c884 | 5753 | flush_pending_output (XINT (p->infd)); |
d0d6b7c5 JB |
5754 | break; |
5755 | } | |
5756 | ||
5757 | /* If we don't have process groups, send the signal to the immediate | |
5758 | subprocess. That isn't really right, but it's better than any | |
5759 | obvious alternative. */ | |
5760 | if (no_pgrp) | |
5761 | { | |
5762 | kill (XFASTINT (p->pid), signo); | |
5763 | return; | |
5764 | } | |
5765 | ||
5766 | /* gid may be a pid, or minus a pgrp's number */ | |
5767 | #ifdef TIOCSIGSEND | |
5768 | if (!NILP (current_group)) | |
16782258 JD |
5769 | { |
5770 | if (ioctl (XINT (p->infd), TIOCSIGSEND, signo) == -1) | |
5771 | EMACS_KILLPG (gid, signo); | |
5772 | } | |
d0d6b7c5 JB |
5773 | else |
5774 | { | |
5775 | gid = - XFASTINT (p->pid); | |
5776 | kill (gid, signo); | |
5777 | } | |
301c3fe4 | 5778 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5779 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5780 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5781 | } |
5782 | ||
5783 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5784 | doc: /* Interrupt process PROCESS. |
5785 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5786 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5787 | Second arg CURRENT-GROUP non-nil means send signal to |
5788 | the current process-group of the process's controlling terminal | |
5789 | rather than to the process's own process group. | |
5790 | If the process is a shell, this means interrupt current subjob | |
5791 | rather than the shell. | |
5792 | ||
5793 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5794 | don't send the signal. */) | |
5795 | (process, current_group) | |
d0d6b7c5 JB |
5796 | Lisp_Object process, current_group; |
5797 | { | |
5798 | process_send_signal (process, SIGINT, current_group, 0); | |
5799 | return process; | |
5800 | } | |
5801 | ||
5802 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5803 | doc: /* Kill process PROCESS. May be process or name of one. |
5804 | See function `interrupt-process' for more details on usage. */) | |
5805 | (process, current_group) | |
d0d6b7c5 JB |
5806 | Lisp_Object process, current_group; |
5807 | { | |
5808 | process_send_signal (process, SIGKILL, current_group, 0); | |
5809 | return process; | |
5810 | } | |
5811 | ||
5812 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5813 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5814 | See function `interrupt-process' for more details on usage. */) | |
5815 | (process, current_group) | |
d0d6b7c5 JB |
5816 | Lisp_Object process, current_group; |
5817 | { | |
5818 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5819 | return process; | |
5820 | } | |
5821 | ||
5822 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5823 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5824 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5825 | If PROCESS is a network process, inhibit handling of incoming traffic. */) |
fdb82f93 | 5826 | (process, current_group) |
d0d6b7c5 JB |
5827 | Lisp_Object process, current_group; |
5828 | { | |
e690ca94 KS |
5829 | #ifdef HAVE_SOCKETS |
5830 | if (PROCESSP (process) && NETCONN_P (process)) | |
5831 | { | |
5832 | struct Lisp_Process *p; | |
177c0ea7 | 5833 | |
e690ca94 KS |
5834 | p = XPROCESS (process); |
5835 | if (NILP (p->command) | |
5836 | && XINT (p->infd) >= 0) | |
5837 | { | |
5838 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
5839 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
5840 | } | |
5841 | p->command = Qt; | |
5842 | return process; | |
5843 | } | |
5844 | #endif | |
d0d6b7c5 | 5845 | #ifndef SIGTSTP |
a9a73d6c | 5846 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
5847 | #else |
5848 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5849 | #endif | |
5850 | return process; | |
5851 | } | |
5852 | ||
5853 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5854 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5855 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5856 | If PROCESS is a network process, resume handling of incoming traffic. */) |
fdb82f93 | 5857 | (process, current_group) |
d0d6b7c5 JB |
5858 | Lisp_Object process, current_group; |
5859 | { | |
e690ca94 KS |
5860 | #ifdef HAVE_SOCKETS |
5861 | if (PROCESSP (process) && NETCONN_P (process)) | |
5862 | { | |
5863 | struct Lisp_Process *p; | |
5864 | ||
5865 | p = XPROCESS (process); | |
5866 | if (EQ (p->command, Qt) | |
5867 | && XINT (p->infd) >= 0 | |
5868 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) | |
5869 | { | |
5870 | FD_SET (XINT (p->infd), &input_wait_mask); | |
5871 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
5872 | } | |
5873 | p->command = Qnil; | |
5874 | return process; | |
5875 | } | |
5876 | #endif | |
d0d6b7c5 JB |
5877 | #ifdef SIGCONT |
5878 | process_send_signal (process, SIGCONT, current_group, 0); | |
5879 | #else | |
a9a73d6c | 5880 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
5881 | #endif |
5882 | return process; | |
5883 | } | |
5884 | ||
5885 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
5886 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
5887 | doc: /* Send PROCESS the signal with code SIGCODE. | |
5888 | PROCESS may also be an integer specifying the process id of the | |
5889 | process to signal; in this case, the process need not be a child of | |
5890 | this Emacs. | |
fdb82f93 | 5891 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
5892 | (process, sigcode) |
5893 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 5894 | { |
cdd5ea86 KS |
5895 | Lisp_Object pid; |
5896 | ||
5897 | if (INTEGERP (process)) | |
5898 | { | |
5899 | pid = process; | |
5900 | goto got_it; | |
5901 | } | |
5902 | ||
5903 | if (STRINGP (process)) | |
5904 | { | |
5905 | Lisp_Object tem; | |
5906 | if (tem = Fget_process (process), NILP (tem)) | |
5907 | { | |
5908 | pid = Fstring_to_number (process, make_number (10)); | |
5909 | if (XINT (pid) != 0) | |
5910 | goto got_it; | |
5911 | } | |
5912 | process = tem; | |
5913 | } | |
5914 | else | |
5915 | process = get_process (process); | |
177c0ea7 | 5916 | |
cdd5ea86 KS |
5917 | if (NILP (process)) |
5918 | return process; | |
5919 | ||
5920 | CHECK_PROCESS (process); | |
5921 | pid = XPROCESS (process)->pid; | |
5922 | if (!INTEGERP (pid) || XINT (pid) <= 0) | |
5923 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); | |
5924 | ||
5925 | got_it: | |
4766242d RS |
5926 | |
5927 | #define handle_signal(NAME, VALUE) \ | |
5928 | else if (!strcmp (name, NAME)) \ | |
5929 | XSETINT (sigcode, VALUE) | |
5930 | ||
5931 | if (INTEGERP (sigcode)) | |
5932 | ; | |
5933 | else | |
5934 | { | |
5935 | unsigned char *name; | |
5936 | ||
b7826503 | 5937 | CHECK_SYMBOL (sigcode); |
d5db4077 | 5938 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d RS |
5939 | |
5940 | if (0) | |
5941 | ; | |
5942 | #ifdef SIGHUP | |
5943 | handle_signal ("SIGHUP", SIGHUP); | |
5944 | #endif | |
5945 | #ifdef SIGINT | |
5946 | handle_signal ("SIGINT", SIGINT); | |
5947 | #endif | |
5948 | #ifdef SIGQUIT | |
5949 | handle_signal ("SIGQUIT", SIGQUIT); | |
5950 | #endif | |
5951 | #ifdef SIGILL | |
5952 | handle_signal ("SIGILL", SIGILL); | |
5953 | #endif | |
5954 | #ifdef SIGABRT | |
5955 | handle_signal ("SIGABRT", SIGABRT); | |
5956 | #endif | |
5957 | #ifdef SIGEMT | |
5958 | handle_signal ("SIGEMT", SIGEMT); | |
5959 | #endif | |
5960 | #ifdef SIGKILL | |
5961 | handle_signal ("SIGKILL", SIGKILL); | |
5962 | #endif | |
5963 | #ifdef SIGFPE | |
5964 | handle_signal ("SIGFPE", SIGFPE); | |
5965 | #endif | |
5966 | #ifdef SIGBUS | |
5967 | handle_signal ("SIGBUS", SIGBUS); | |
5968 | #endif | |
5969 | #ifdef SIGSEGV | |
5970 | handle_signal ("SIGSEGV", SIGSEGV); | |
5971 | #endif | |
5972 | #ifdef SIGSYS | |
5973 | handle_signal ("SIGSYS", SIGSYS); | |
5974 | #endif | |
5975 | #ifdef SIGPIPE | |
5976 | handle_signal ("SIGPIPE", SIGPIPE); | |
5977 | #endif | |
5978 | #ifdef SIGALRM | |
5979 | handle_signal ("SIGALRM", SIGALRM); | |
5980 | #endif | |
5981 | #ifdef SIGTERM | |
5982 | handle_signal ("SIGTERM", SIGTERM); | |
5983 | #endif | |
5984 | #ifdef SIGURG | |
5985 | handle_signal ("SIGURG", SIGURG); | |
5986 | #endif | |
5987 | #ifdef SIGSTOP | |
5988 | handle_signal ("SIGSTOP", SIGSTOP); | |
5989 | #endif | |
5990 | #ifdef SIGTSTP | |
5991 | handle_signal ("SIGTSTP", SIGTSTP); | |
5992 | #endif | |
5993 | #ifdef SIGCONT | |
5994 | handle_signal ("SIGCONT", SIGCONT); | |
5995 | #endif | |
5996 | #ifdef SIGCHLD | |
5997 | handle_signal ("SIGCHLD", SIGCHLD); | |
5998 | #endif | |
5999 | #ifdef SIGTTIN | |
6000 | handle_signal ("SIGTTIN", SIGTTIN); | |
6001 | #endif | |
6002 | #ifdef SIGTTOU | |
6003 | handle_signal ("SIGTTOU", SIGTTOU); | |
6004 | #endif | |
6005 | #ifdef SIGIO | |
6006 | handle_signal ("SIGIO", SIGIO); | |
6007 | #endif | |
6008 | #ifdef SIGXCPU | |
6009 | handle_signal ("SIGXCPU", SIGXCPU); | |
6010 | #endif | |
6011 | #ifdef SIGXFSZ | |
6012 | handle_signal ("SIGXFSZ", SIGXFSZ); | |
6013 | #endif | |
6014 | #ifdef SIGVTALRM | |
6015 | handle_signal ("SIGVTALRM", SIGVTALRM); | |
6016 | #endif | |
6017 | #ifdef SIGPROF | |
6018 | handle_signal ("SIGPROF", SIGPROF); | |
6019 | #endif | |
6020 | #ifdef SIGWINCH | |
6021 | handle_signal ("SIGWINCH", SIGWINCH); | |
6022 | #endif | |
6023 | #ifdef SIGINFO | |
6024 | handle_signal ("SIGINFO", SIGINFO); | |
6025 | #endif | |
6026 | #ifdef SIGUSR1 | |
6027 | handle_signal ("SIGUSR1", SIGUSR1); | |
6028 | #endif | |
6029 | #ifdef SIGUSR2 | |
6030 | handle_signal ("SIGUSR2", SIGUSR2); | |
6031 | #endif | |
6032 | else | |
9fa195a2 | 6033 | error ("Undefined signal name %s", name); |
4766242d RS |
6034 | } |
6035 | ||
6036 | #undef handle_signal | |
6037 | ||
4766242d | 6038 | return make_number (kill (XINT (pid), XINT (sigcode))); |
d0d6b7c5 JB |
6039 | } |
6040 | ||
6041 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6042 | doc: /* Make PROCESS see end-of-file in its input. |
6043 | EOF comes after any text already sent to it. | |
6044 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6045 | nil, indicating the current buffer's process. | |
6046 | If PROCESS is a network connection, or is a process communicating | |
6047 | through a pipe (as opposed to a pty), then you cannot send any more | |
6048 | text to PROCESS after you call this function. */) | |
6049 | (process) | |
d0d6b7c5 JB |
6050 | Lisp_Object process; |
6051 | { | |
6052 | Lisp_Object proc; | |
de7fbd09 | 6053 | struct coding_system *coding; |
d0d6b7c5 | 6054 | |
e690ca94 KS |
6055 | if (DATAGRAM_CONN_P (process)) |
6056 | return process; | |
6057 | ||
d0d6b7c5 | 6058 | proc = get_process (process); |
de7fbd09 | 6059 | coding = proc_encode_coding_system[XINT (XPROCESS (proc)->outfd)]; |
577d03d5 RS |
6060 | |
6061 | /* Make sure the process is really alive. */ | |
6062 | if (! NILP (XPROCESS (proc)->raw_status_low)) | |
6063 | update_status (XPROCESS (proc)); | |
6064 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6065 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6066 | |
de7fbd09 KH |
6067 | if (CODING_REQUIRE_FLUSHING (coding)) |
6068 | { | |
6069 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6070 | send_process (proc, "", 0, Qnil); | |
6071 | } | |
6072 | ||
d0d6b7c5 | 6073 | #ifdef VMS |
4556b700 | 6074 | send_process (proc, "\032", 1, Qnil); /* ^z */ |
d0d6b7c5 JB |
6075 | #else |
6076 | if (!NILP (XPROCESS (proc)->pty_flag)) | |
4556b700 | 6077 | send_process (proc, "\004", 1, Qnil); |
d0d6b7c5 JB |
6078 | else |
6079 | { | |
4525f571 RS |
6080 | int old_outfd, new_outfd; |
6081 | ||
93853f3d | 6082 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6083 | /* If this is a network connection, or socketpair is used |
6084 | for communication with the subprocess, call shutdown to cause EOF. | |
6085 | (In some old system, shutdown to socketpair doesn't work. | |
6086 | Then we just can't win.) */ | |
6087 | if (NILP (XPROCESS (proc)->pid) | |
6088 | || XINT (XPROCESS (proc)->outfd) == XINT (XPROCESS (proc)->infd)) | |
6089 | shutdown (XINT (XPROCESS (proc)->outfd), 1); | |
6090 | /* In case of socketpair, outfd == infd, so don't close it. */ | |
6091 | if (XINT (XPROCESS (proc)->outfd) != XINT (XPROCESS (proc)->infd)) | |
68c45bf0 | 6092 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6093 | #else /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6094 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6095 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6096 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
4525f571 RS |
6097 | old_outfd = XINT (XPROCESS (proc)->outfd); |
6098 | ||
6099 | if (!proc_encode_coding_system[new_outfd]) | |
6100 | proc_encode_coding_system[new_outfd] | |
6101 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6102 | bcopy (proc_encode_coding_system[old_outfd], | |
6103 | proc_encode_coding_system[new_outfd], | |
6104 | sizeof (struct coding_system)); | |
6105 | bzero (proc_encode_coding_system[old_outfd], | |
6106 | sizeof (struct coding_system)); | |
6107 | ||
6108 | XSETINT (XPROCESS (proc)->outfd, new_outfd); | |
d0d6b7c5 JB |
6109 | } |
6110 | #endif /* VMS */ | |
d0d6b7c5 JB |
6111 | return process; |
6112 | } | |
6113 | ||
6114 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 6115 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 6116 | |
6b53bb85 | 6117 | void |
d0d6b7c5 JB |
6118 | kill_buffer_processes (buffer) |
6119 | Lisp_Object buffer; | |
6120 | { | |
6121 | Lisp_Object tail, proc; | |
6122 | ||
70949dac | 6123 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6124 | { |
70949dac | 6125 | proc = XCDR (XCAR (tail)); |
b5b502d6 | 6126 | if (GC_PROCESSP (proc) |
d0d6b7c5 JB |
6127 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
6128 | { | |
6129 | if (NETCONN_P (proc)) | |
e1ab4959 | 6130 | Fdelete_process (proc); |
a9f2c884 | 6131 | else if (XINT (XPROCESS (proc)->infd) >= 0) |
d0d6b7c5 JB |
6132 | process_send_signal (proc, SIGHUP, Qnil, 1); |
6133 | } | |
6134 | } | |
6135 | } | |
6136 | \f | |
3fed8ad5 GM |
6137 | /* On receipt of a signal that a child status has changed, loop asking |
6138 | about children with changed statuses until the system says there | |
6139 | are no more. | |
177c0ea7 | 6140 | |
3fed8ad5 GM |
6141 | All we do is change the status; we do not run sentinels or print |
6142 | notifications. That is saved for the next time keyboard input is | |
6143 | done, in order to avoid timing errors. | |
6144 | ||
6145 | ** WARNING: this can be called during garbage collection. | |
6146 | Therefore, it must not be fooled by the presence of mark bits in | |
6147 | Lisp objects. | |
6148 | ||
6149 | ** USG WARNING: Although it is not obvious from the documentation | |
6150 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6151 | signal() before executing at least one wait(), otherwise the | |
6152 | handler will be called again, resulting in an infinite loop. The | |
6153 | relevant portion of the documentation reads "SIGCLD signals will be | |
6154 | queued and the signal-catching function will be continually | |
6155 | reentered until the queue is empty". Invoking signal() causes the | |
6156 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
ce38070a JD |
6157 | Inc. |
6158 | ||
6159 | ** Malloc WARNING: This should never call malloc either directly or | |
6160 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 JB |
6161 | |
6162 | SIGTYPE | |
6163 | sigchld_handler (signo) | |
6164 | int signo; | |
6165 | { | |
6166 | int old_errno = errno; | |
6167 | Lisp_Object proc; | |
6168 | register struct Lisp_Process *p; | |
6be429b1 | 6169 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 | 6170 | |
333f1b6f JD |
6171 | SIGNAL_THREAD_CHECK (signo); |
6172 | ||
d0d6b7c5 JB |
6173 | #ifdef BSD4_1 |
6174 | extern int sigheld; | |
6175 | sigheld |= sigbit (SIGCHLD); | |
6176 | #endif | |
6177 | ||
6178 | while (1) | |
6179 | { | |
6180 | register int pid; | |
6181 | WAITTYPE w; | |
6182 | Lisp_Object tail; | |
6183 | ||
6184 | #ifdef WNOHANG | |
6185 | #ifndef WUNTRACED | |
6186 | #define WUNTRACED 0 | |
6187 | #endif /* no WUNTRACED */ | |
6188 | /* Keep trying to get a status until we get a definitive result. */ | |
177c0ea7 | 6189 | do |
d0d6b7c5 JB |
6190 | { |
6191 | errno = 0; | |
6192 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
6193 | } | |
3fed8ad5 | 6194 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6195 | |
6196 | if (pid <= 0) | |
6197 | { | |
3fed8ad5 GM |
6198 | /* PID == 0 means no processes found, PID == -1 means a real |
6199 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6200 | |
6201 | /* USG systems forget handlers when they are used; | |
6202 | must reestablish each time */ | |
3c0ee47b | 6203 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6204 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
6205 | #endif | |
6206 | #ifdef BSD4_1 | |
6207 | sigheld &= ~sigbit (SIGCHLD); | |
6208 | sigrelse (SIGCHLD); | |
6209 | #endif | |
6210 | errno = old_errno; | |
6211 | return; | |
6212 | } | |
6213 | #else | |
6214 | pid = wait (&w); | |
6215 | #endif /* no WNOHANG */ | |
6216 | ||
6217 | /* Find the process that signaled us, and record its status. */ | |
6218 | ||
6219 | p = 0; | |
3fed8ad5 | 6220 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6221 | { |
70949dac | 6222 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6223 | p = XPROCESS (proc); |
3fed8ad5 | 6224 | if (GC_EQ (p->childp, Qt) && XINT (p->pid) == pid) |
d0d6b7c5 JB |
6225 | break; |
6226 | p = 0; | |
6227 | } | |
6228 | ||
6229 | /* Look for an asynchronous process whose pid hasn't been filled | |
6230 | in yet. */ | |
6231 | if (p == 0) | |
3fed8ad5 | 6232 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6233 | { |
70949dac | 6234 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6235 | p = XPROCESS (proc); |
3fed8ad5 | 6236 | if (GC_INTEGERP (p->pid) && XINT (p->pid) == -1) |
d0d6b7c5 JB |
6237 | break; |
6238 | p = 0; | |
6239 | } | |
177c0ea7 | 6240 | |
d0d6b7c5 JB |
6241 | /* Change the status of the process that was found. */ |
6242 | if (p != 0) | |
6243 | { | |
6244 | union { int i; WAITTYPE wt; } u; | |
e98d950b | 6245 | int clear_desc_flag = 0; |
177c0ea7 | 6246 | |
d0d6b7c5 JB |
6247 | XSETINT (p->tick, ++process_tick); |
6248 | u.wt = w; | |
5fc0154c RS |
6249 | XSETINT (p->raw_status_low, u.i & 0xffff); |
6250 | XSETINT (p->raw_status_high, u.i >> 16); | |
177c0ea7 | 6251 | |
d0d6b7c5 | 6252 | /* If process has terminated, stop waiting for its output. */ |
e98d950b RS |
6253 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
6254 | && XINT (p->infd) >= 0) | |
6255 | clear_desc_flag = 1; | |
6256 | ||
6257 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6258 | if (clear_desc_flag) | |
6259 | { | |
6260 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
6261 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
6262 | } | |
6be429b1 | 6263 | |
214d6069 | 6264 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6265 | look around. */ |
6266 | if (input_available_clear_time) | |
6267 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6268 | } |
6269 | ||
6270 | /* There was no asynchronous process found for that id. Check | |
6271 | if we have a synchronous process. */ | |
6272 | else | |
6273 | { | |
6274 | synch_process_alive = 0; | |
6275 | ||
6276 | /* Report the status of the synchronous process. */ | |
6277 | if (WIFEXITED (w)) | |
6278 | synch_process_retcode = WRETCODE (w); | |
6279 | else if (WIFSIGNALED (w)) | |
c22aeff8 | 6280 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6281 | |
214d6069 | 6282 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6283 | look around. */ |
6284 | if (input_available_clear_time) | |
6285 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6286 | } |
6287 | ||
6288 | /* On some systems, we must return right away. | |
6289 | If any more processes want to signal us, we will | |
6290 | get another signal. | |
6291 | Otherwise (on systems that have WNOHANG), loop around | |
6292 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6293 | #if (defined WINDOWSNT \ |
8a2a6032 | 6294 | || (defined USG && !defined GNU_LINUX \ |
4e6277d8 | 6295 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6296 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6297 | signal (signo, sigchld_handler); |
6298 | #endif | |
6299 | errno = old_errno; | |
6300 | return; | |
6301 | #endif /* USG, but not HPUX with WNOHANG */ | |
6302 | } | |
6303 | } | |
6304 | \f | |
6305 | ||
6306 | static Lisp_Object | |
6307 | exec_sentinel_unwind (data) | |
6308 | Lisp_Object data; | |
6309 | { | |
70949dac | 6310 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6311 | return Qnil; |
6312 | } | |
6313 | ||
3b9a3dfa RS |
6314 | static Lisp_Object |
6315 | exec_sentinel_error_handler (error) | |
6316 | Lisp_Object error; | |
6317 | { | |
6318 | cmd_error_internal (error, "error in process sentinel: "); | |
6319 | Vinhibit_quit = Qt; | |
6320 | update_echo_area (); | |
833ba342 | 6321 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6322 | return Qt; |
3b9a3dfa RS |
6323 | } |
6324 | ||
d0d6b7c5 JB |
6325 | static void |
6326 | exec_sentinel (proc, reason) | |
6327 | Lisp_Object proc, reason; | |
6328 | { | |
dfc21838 | 6329 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6330 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6331 | int count = SPECPDL_INDEX (); |
4da2f5be | 6332 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6333 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6334 | |
dfc21838 RS |
6335 | /* No need to gcpro these, because all we do with them later |
6336 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6337 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6338 | XSETBUFFER (obuffer, current_buffer); |
6339 | okeymap = current_buffer->keymap; | |
6340 | ||
d0d6b7c5 JB |
6341 | sentinel = p->sentinel; |
6342 | if (NILP (sentinel)) | |
6343 | return; | |
6344 | ||
6345 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6346 | assure that it gets restored no matter how the sentinel exits. */ | |
6347 | p->sentinel = Qnil; | |
6348 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6349 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6350 | specbind (Qinhibit_quit, Qt); | |
6545aada | 6351 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 6352 | |
4da2f5be RS |
6353 | /* In case we get recursively called, |
6354 | and we already saved the match data nonrecursively, | |
6355 | save the same match data in safely recursive fashion. */ | |
6356 | if (outer_running_asynch_code) | |
6357 | { | |
6358 | Lisp_Object tem; | |
89f2614d KS |
6359 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6360 | restore_search_regs (); | |
6361 | record_unwind_save_match_data (); | |
6362 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6363 | } |
6364 | ||
6365 | /* For speed, if a search happens within this code, | |
6366 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6367 | running_asynch_code = 1; |
4da2f5be | 6368 | |
3b9a3dfa RS |
6369 | internal_condition_case_1 (read_process_output_call, |
6370 | Fcons (sentinel, | |
6371 | Fcons (proc, Fcons (reason, Qnil))), | |
6372 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6373 | exec_sentinel_error_handler); | |
4da2f5be RS |
6374 | |
6375 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6376 | restore_search_regs (); |
4da2f5be | 6377 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6378 | |
6379 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6380 | |
6381 | /* Restore waiting_for_user_input_p as it was | |
6382 | when we were called, in case the filter clobbered it. */ | |
6383 | waiting_for_user_input_p = waiting; | |
6384 | ||
7973cfa8 | 6385 | #if 0 |
dfc21838 RS |
6386 | if (! EQ (Fcurrent_buffer (), obuffer) |
6387 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6388 | #endif |
927e08be RS |
6389 | /* But do it only if the caller is actually going to read events. |
6390 | Otherwise there's no need to make him wake up, and it could | |
6391 | cause trouble (for example it would make Fsit_for return). */ | |
6392 | if (waiting_for_user_input_p == -1) | |
6393 | record_asynch_buffer_change (); | |
8fb3cf64 | 6394 | |
2ea6d561 | 6395 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6396 | } |
6397 | ||
6398 | /* Report all recent events of a change in process status | |
6399 | (either run the sentinel or output a message). | |
b50fe468 RS |
6400 | This is usually done while Emacs is waiting for keyboard input |
6401 | but can be done at other times. */ | |
d0d6b7c5 | 6402 | |
ff6daed3 KS |
6403 | static void |
6404 | status_notify (deleting_process) | |
6405 | struct Lisp_Process *deleting_process; | |
d0d6b7c5 JB |
6406 | { |
6407 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6408 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6409 | struct gcpro gcpro1, gcpro2; |
6410 | ||
2e4149a8 KH |
6411 | tail = Qnil; |
6412 | msg = Qnil; | |
d0d6b7c5 JB |
6413 | /* We need to gcpro tail; if read_process_output calls a filter |
6414 | which deletes a process and removes the cons to which tail points | |
6415 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6416 | reference. */ | |
6417 | GCPRO2 (tail, msg); | |
6418 | ||
30623085 RS |
6419 | /* Set this now, so that if new processes are created by sentinels |
6420 | that we run, we get called again to handle their status changes. */ | |
6421 | update_tick = process_tick; | |
6422 | ||
6423 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
d0d6b7c5 | 6424 | { |
30623085 RS |
6425 | Lisp_Object symbol; |
6426 | register struct Lisp_Process *p; | |
6427 | ||
6428 | proc = Fcdr (Fcar (tail)); | |
6429 | p = XPROCESS (proc); | |
6430 | ||
6431 | if (XINT (p->tick) != XINT (p->update_tick)) | |
d0d6b7c5 | 6432 | { |
30623085 | 6433 | XSETINT (p->update_tick, XINT (p->tick)); |
d0d6b7c5 | 6434 | |
30623085 | 6435 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6436 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6437 | && ! EQ (p->status, Qconnect) |
e690ca94 KS |
6438 | && ! EQ (p->status, Qlisten) |
6439 | && ! EQ (p->command, Qt) /* Network process not stopped. */ | |
4da2f5be | 6440 | && XINT (p->infd) >= 0 |
ff6daed3 | 6441 | && p != deleting_process |
4da2f5be | 6442 | && read_process_output (proc, XINT (p->infd)) > 0); |
d0d6b7c5 | 6443 | |
30623085 | 6444 | buffer = p->buffer; |
d0d6b7c5 | 6445 | |
30623085 RS |
6446 | /* Get the text to use for the message. */ |
6447 | if (!NILP (p->raw_status_low)) | |
6448 | update_status (p); | |
116c423c | 6449 | msg = status_message (p); |
d0d6b7c5 | 6450 | |
30623085 RS |
6451 | /* If process is terminated, deactivate it or delete it. */ |
6452 | symbol = p->status; | |
6453 | if (CONSP (p->status)) | |
70949dac | 6454 | symbol = XCAR (p->status); |
d0d6b7c5 | 6455 | |
30623085 RS |
6456 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6457 | || EQ (symbol, Qclosed)) | |
6458 | { | |
6459 | if (delete_exited_processes) | |
6460 | remove_process (proc); | |
6461 | else | |
6462 | deactivate_process (proc); | |
6463 | } | |
d0d6b7c5 | 6464 | |
0ad61fe7 RS |
6465 | /* The actions above may have further incremented p->tick. |
6466 | So set p->update_tick again | |
6467 | so that an error in the sentinel will not cause | |
6468 | this code to be run again. */ | |
6469 | XSETINT (p->update_tick, XINT (p->tick)); | |
30623085 RS |
6470 | /* Now output the message suitably. */ |
6471 | if (!NILP (p->sentinel)) | |
6472 | exec_sentinel (proc, msg); | |
6473 | /* Don't bother with a message in the buffer | |
6474 | when a process becomes runnable. */ | |
6475 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6476 | { | |
6477 | Lisp_Object ro, tem; | |
6478 | struct buffer *old = current_buffer; | |
d8a2934e RS |
6479 | int opoint, opoint_byte; |
6480 | int before, before_byte; | |
2e4149a8 | 6481 | |
30623085 | 6482 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 6483 | |
30623085 RS |
6484 | /* Avoid error if buffer is deleted |
6485 | (probably that's why the process is dead, too) */ | |
6486 | if (NILP (XBUFFER (buffer)->name)) | |
6487 | continue; | |
6488 | Fset_buffer (buffer); | |
12ca5cdf | 6489 | |
6ec8bbd2 | 6490 | opoint = PT; |
d8a2934e | 6491 | opoint_byte = PT_BYTE; |
30623085 RS |
6492 | /* Insert new output into buffer |
6493 | at the current end-of-output marker, | |
6494 | thus preserving logical ordering of input and output. */ | |
6495 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6496 | Fgoto_char (p->mark); |
30623085 | 6497 | else |
d8a2934e | 6498 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6499 | |
6500 | before = PT; | |
d8a2934e | 6501 | before_byte = PT_BYTE; |
30623085 RS |
6502 | |
6503 | tem = current_buffer->read_only; | |
6504 | current_buffer->read_only = Qnil; | |
6505 | insert_string ("\nProcess "); | |
6506 | Finsert (1, &p->name); | |
6507 | insert_string (" "); | |
6508 | Finsert (1, &msg); | |
6509 | current_buffer->read_only = tem; | |
d8a2934e | 6510 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6511 | |
12ca5cdf | 6512 | if (opoint >= before) |
d8a2934e RS |
6513 | SET_PT_BOTH (opoint + (PT - before), |
6514 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6515 | else |
d8a2934e | 6516 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6517 | |
30623085 | 6518 | set_buffer_internal (old); |
d0d6b7c5 | 6519 | } |
30623085 RS |
6520 | } |
6521 | } /* end for */ | |
d0d6b7c5 JB |
6522 | |
6523 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
3007ebfb | 6524 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 6525 | |
d0d6b7c5 JB |
6526 | UNGCPRO; |
6527 | } | |
0fa1789e KH |
6528 | |
6529 | \f | |
6530 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6531 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6532 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6533 | DECODING will be used to decode subprocess output and ENCODING to | |
6534 | encode subprocess input. */) | |
f3d9532b JB |
6535 | (process, decoding, encoding) |
6536 | register Lisp_Object process, decoding, encoding; | |
0fa1789e KH |
6537 | { |
6538 | register struct Lisp_Process *p; | |
6539 | ||
f3d9532b JB |
6540 | CHECK_PROCESS (process); |
6541 | p = XPROCESS (process); | |
0fa1789e | 6542 | if (XINT (p->infd) < 0) |
d5db4077 | 6543 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
0fa1789e | 6544 | if (XINT (p->outfd) < 0) |
d5db4077 | 6545 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6546 | Fcheck_coding_system (decoding); |
6547 | Fcheck_coding_system (encoding); | |
0fa1789e | 6548 | |
03f04413 KH |
6549 | p->decode_coding_system = decoding; |
6550 | p->encode_coding_system = encoding; | |
f3d9532b | 6551 | setup_process_coding_systems (process); |
0fa1789e KH |
6552 | |
6553 | return Qnil; | |
6554 | } | |
6555 | ||
6556 | DEFUN ("process-coding-system", | |
6557 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6558 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
f3d9532b JB |
6559 | (process) |
6560 | register Lisp_Object process; | |
0fa1789e | 6561 | { |
f3d9532b JB |
6562 | CHECK_PROCESS (process); |
6563 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6564 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6565 | } |
03f04413 KH |
6566 | |
6567 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6568 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6569 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6570 | If FLAG is non-nil, the filter is given multibyte strings. | |
6571 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6572 | all character code conversion except for end-of-line conversion is |
6573 | suppressed. */) | |
f3d9532b JB |
6574 | (process, flag) |
6575 | Lisp_Object process, flag; | |
03f04413 KH |
6576 | { |
6577 | register struct Lisp_Process *p; | |
6578 | ||
f3d9532b JB |
6579 | CHECK_PROCESS (process); |
6580 | p = XPROCESS (process); | |
03f04413 | 6581 | p->filter_multibyte = flag; |
f3d9532b | 6582 | setup_process_coding_systems (process); |
03f04413 KH |
6583 | |
6584 | return Qnil; | |
6585 | } | |
6586 | ||
6587 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6588 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6589 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
f3d9532b JB |
6590 | (process) |
6591 | Lisp_Object process; | |
03f04413 KH |
6592 | { |
6593 | register struct Lisp_Process *p; | |
6594 | ||
f3d9532b JB |
6595 | CHECK_PROCESS (process); |
6596 | p = XPROCESS (process); | |
03f04413 KH |
6597 | |
6598 | return (NILP (p->filter_multibyte) ? Qnil : Qt); | |
6599 | } | |
6600 | ||
6601 | ||
d0d6b7c5 | 6602 | \f |
a69281ff RS |
6603 | /* The first time this is called, assume keyboard input comes from DESC |
6604 | instead of from where we used to expect it. | |
6605 | Subsequent calls mean assume input keyboard can come from DESC | |
6606 | in addition to other places. */ | |
6607 | ||
6608 | static int add_keyboard_wait_descriptor_called_flag; | |
6609 | ||
6610 | void | |
6611 | add_keyboard_wait_descriptor (desc) | |
6612 | int desc; | |
6613 | { | |
6614 | if (! add_keyboard_wait_descriptor_called_flag) | |
6615 | FD_CLR (0, &input_wait_mask); | |
6616 | add_keyboard_wait_descriptor_called_flag = 1; | |
6617 | FD_SET (desc, &input_wait_mask); | |
b5dc1c83 | 6618 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
6619 | if (desc > max_keyboard_desc) |
6620 | max_keyboard_desc = desc; | |
6621 | } | |
6622 | ||
6623 | /* From now on, do not expect DESC to give keyboard input. */ | |
6624 | ||
6625 | void | |
6626 | delete_keyboard_wait_descriptor (desc) | |
6627 | int desc; | |
6628 | { | |
6629 | int fd; | |
6630 | int lim = max_keyboard_desc; | |
6631 | ||
6632 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 6633 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
6634 | |
6635 | if (desc == max_keyboard_desc) | |
6636 | for (fd = 0; fd < lim; fd++) | |
6637 | if (FD_ISSET (fd, &input_wait_mask) | |
6638 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6639 | max_keyboard_desc = fd; | |
6640 | } | |
6641 | ||
6642 | /* Return nonzero if *MASK has a bit set | |
6643 | that corresponds to one of the keyboard input descriptors. */ | |
6644 | ||
ff6daed3 | 6645 | static int |
a69281ff RS |
6646 | keyboard_bit_set (mask) |
6647 | SELECT_TYPE *mask; | |
6648 | { | |
6649 | int fd; | |
6650 | ||
ee8e09af | 6651 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
6652 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6653 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6654 | return 1; | |
6655 | ||
6656 | return 0; | |
6657 | } | |
6658 | \f | |
dfcf069d | 6659 | void |
d0d6b7c5 JB |
6660 | init_process () |
6661 | { | |
6662 | register int i; | |
6663 | ||
6664 | #ifdef SIGCHLD | |
6665 | #ifndef CANNOT_DUMP | |
6666 | if (! noninteractive || initialized) | |
6667 | #endif | |
6668 | signal (SIGCHLD, sigchld_handler); | |
6669 | #endif | |
6670 | ||
6671 | FD_ZERO (&input_wait_mask); | |
a69281ff | 6672 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 6673 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 6674 | max_process_desc = 0; |
dd2281ae | 6675 | |
bad49fc7 KS |
6676 | #ifdef NON_BLOCKING_CONNECT |
6677 | FD_ZERO (&connect_wait_mask); | |
6678 | num_pending_connects = 0; | |
6679 | #endif | |
6680 | ||
2d942bfa KS |
6681 | #ifdef ADAPTIVE_READ_BUFFERING |
6682 | process_output_delay_count = 0; | |
6683 | process_output_skip = 0; | |
6684 | #endif | |
6685 | ||
a69281ff | 6686 | FD_SET (0, &input_wait_mask); |
dd2281ae | 6687 | |
d0d6b7c5 JB |
6688 | Vprocess_alist = Qnil; |
6689 | for (i = 0; i < MAXDESC; i++) | |
6690 | { | |
6691 | chan_process[i] = Qnil; | |
6692 | proc_buffered_char[i] = -1; | |
6693 | } | |
c7580538 KH |
6694 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
6695 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
6696 | #ifdef DATAGRAM_SOCKETS |
6697 | bzero (datagram_address, sizeof datagram_address); | |
6698 | #endif | |
9057ff80 | 6699 | |
c2bd2c26 KS |
6700 | #ifdef HAVE_SOCKETS |
6701 | { | |
6702 | Lisp_Object subfeatures = Qnil; | |
2ccf3102 KS |
6703 | struct socket_options *sopt; |
6704 | ||
9057ff80 KS |
6705 | #define ADD_SUBFEATURE(key, val) \ |
6706 | subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures) | |
6707 | ||
9057ff80 | 6708 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 6709 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
6710 | #endif |
6711 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 6712 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 KS |
6713 | #endif |
6714 | #ifdef HAVE_LOCAL_SOCKETS | |
c2bd2c26 | 6715 | ADD_SUBFEATURE (QCfamily, Qlocal); |
9057ff80 KS |
6716 | #endif |
6717 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 6718 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 6719 | #endif |
a8e8ea61 | 6720 | #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY)) |
c2bd2c26 | 6721 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 6722 | #endif |
2ccf3102 KS |
6723 | |
6724 | for (sopt = socket_options; sopt->name; sopt++) | |
6725 | subfeatures = Fcons (intern (sopt->name), subfeatures); | |
6726 | ||
c2bd2c26 KS |
6727 | Fprovide (intern ("make-network-process"), subfeatures); |
6728 | } | |
6729 | #endif /* HAVE_SOCKETS */ | |
d9e7c622 | 6730 | |
ecc175e2 | 6731 | #if defined (DARWIN) || defined (MAC_OSX) |
db853b7a | 6732 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive |
d9e7c622 ST |
6733 | processes. As such, we only change the default value. */ |
6734 | if (initialized) | |
6735 | { | |
6736 | char *release = get_operating_system_release(); | |
6737 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION | |
6738 | && release[1] == '.')) { | |
6739 | Vprocess_connection_type = Qnil; | |
6740 | } | |
6741 | } | |
6742 | #endif | |
d0d6b7c5 | 6743 | } |
312c9964 | 6744 | |
dfcf069d | 6745 | void |
d0d6b7c5 JB |
6746 | syms_of_process () |
6747 | { | |
d0d6b7c5 JB |
6748 | Qprocessp = intern ("processp"); |
6749 | staticpro (&Qprocessp); | |
6750 | Qrun = intern ("run"); | |
6751 | staticpro (&Qrun); | |
6752 | Qstop = intern ("stop"); | |
6753 | staticpro (&Qstop); | |
6754 | Qsignal = intern ("signal"); | |
6755 | staticpro (&Qsignal); | |
6756 | ||
6757 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
6758 | here again. | |
6759 | ||
6760 | Qexit = intern ("exit"); | |
6761 | staticpro (&Qexit); */ | |
6762 | ||
6763 | Qopen = intern ("open"); | |
6764 | staticpro (&Qopen); | |
6765 | Qclosed = intern ("closed"); | |
6766 | staticpro (&Qclosed); | |
dd2a17ab KS |
6767 | Qconnect = intern ("connect"); |
6768 | staticpro (&Qconnect); | |
6769 | Qfailed = intern ("failed"); | |
6770 | staticpro (&Qfailed); | |
e690ca94 KS |
6771 | Qlisten = intern ("listen"); |
6772 | staticpro (&Qlisten); | |
6773 | Qlocal = intern ("local"); | |
6774 | staticpro (&Qlocal); | |
9057ff80 KS |
6775 | Qdatagram = intern ("datagram"); |
6776 | staticpro (&Qdatagram); | |
e690ca94 KS |
6777 | |
6778 | QCname = intern (":name"); | |
6779 | staticpro (&QCname); | |
6780 | QCbuffer = intern (":buffer"); | |
6781 | staticpro (&QCbuffer); | |
6782 | QChost = intern (":host"); | |
6783 | staticpro (&QChost); | |
6784 | QCservice = intern (":service"); | |
6785 | staticpro (&QCservice); | |
9057ff80 KS |
6786 | QCtype = intern (":type"); |
6787 | staticpro (&QCtype); | |
e690ca94 KS |
6788 | QClocal = intern (":local"); |
6789 | staticpro (&QClocal); | |
6790 | QCremote = intern (":remote"); | |
6791 | staticpro (&QCremote); | |
6792 | QCcoding = intern (":coding"); | |
6793 | staticpro (&QCcoding); | |
6794 | QCserver = intern (":server"); | |
6795 | staticpro (&QCserver); | |
e690ca94 KS |
6796 | QCnowait = intern (":nowait"); |
6797 | staticpro (&QCnowait); | |
e690ca94 KS |
6798 | QCsentinel = intern (":sentinel"); |
6799 | staticpro (&QCsentinel); | |
6800 | QClog = intern (":log"); | |
6801 | staticpro (&QClog); | |
6802 | QCnoquery = intern (":noquery"); | |
6803 | staticpro (&QCnoquery); | |
6804 | QCstop = intern (":stop"); | |
6805 | staticpro (&QCstop); | |
6806 | QCoptions = intern (":options"); | |
6807 | staticpro (&QCoptions); | |
faa7db08 KS |
6808 | QCplist = intern (":plist"); |
6809 | staticpro (&QCplist); | |
7392e23c KS |
6810 | QCfilter_multibyte = intern (":filter-multibyte"); |
6811 | staticpro (&QCfilter_multibyte); | |
177c0ea7 | 6812 | |
6545aada RS |
6813 | Qlast_nonmenu_event = intern ("last-nonmenu-event"); |
6814 | staticpro (&Qlast_nonmenu_event); | |
6815 | ||
d0d6b7c5 JB |
6816 | staticpro (&Vprocess_alist); |
6817 | ||
6818 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
fdb82f93 PJ |
6819 | doc: /* *Non-nil means delete processes immediately when they exit. |
6820 | nil means don't delete them until `list-processes' is run. */); | |
d0d6b7c5 JB |
6821 | |
6822 | delete_exited_processes = 1; | |
6823 | ||
6824 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
6825 | doc: /* Control type of device used to communicate with subprocesses. |
6826 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
6827 | The value has no effect if the system has no ptys or if all ptys are busy: | |
6828 | then a pipe is used in any case. | |
6829 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
6830 | Vprocess_connection_type = Qt; |
6831 | ||
2d942bfa KS |
6832 | #ifdef ADAPTIVE_READ_BUFFERING |
6833 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
6834 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
f3d9532b | 6835 | On some systems, when Emacs reads the output from a subprocess, the output data |
2d942bfa | 6836 | is read in very small blocks, potentially resulting in very poor performance. |
2de35a25 | 6837 | This behavior can be remedied to some extent by setting this variable to a |
2d942bfa | 6838 | non-nil value, as it will automatically delay reading from such processes, to |
f3d9532b | 6839 | allowing them to produce more output before Emacs tries to read it. |
2d942bfa KS |
6840 | If the value is t, the delay is reset after each write to the process; any other |
6841 | non-nil value means that the delay is not reset on write. | |
6842 | The variable takes effect when `start-process' is called. */); | |
6843 | Vprocess_adaptive_read_buffering = Qt; | |
6844 | #endif | |
6845 | ||
d0d6b7c5 JB |
6846 | defsubr (&Sprocessp); |
6847 | defsubr (&Sget_process); | |
6848 | defsubr (&Sget_buffer_process); | |
6849 | defsubr (&Sdelete_process); | |
6850 | defsubr (&Sprocess_status); | |
6851 | defsubr (&Sprocess_exit_status); | |
6852 | defsubr (&Sprocess_id); | |
6853 | defsubr (&Sprocess_name); | |
3b9a3dfa | 6854 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
6855 | defsubr (&Sprocess_command); |
6856 | defsubr (&Sset_process_buffer); | |
6857 | defsubr (&Sprocess_buffer); | |
6858 | defsubr (&Sprocess_mark); | |
6859 | defsubr (&Sset_process_filter); | |
6860 | defsubr (&Sprocess_filter); | |
6861 | defsubr (&Sset_process_sentinel); | |
6862 | defsubr (&Sprocess_sentinel); | |
de282a05 | 6863 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
6864 | defsubr (&Sset_process_inherit_coding_system_flag); |
6865 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
6866 | defsubr (&Sset_process_query_on_exit_flag); |
6867 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 6868 | defsubr (&Sprocess_contact); |
faa7db08 KS |
6869 | defsubr (&Sprocess_plist); |
6870 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
6871 | defsubr (&Slist_processes); |
6872 | defsubr (&Sprocess_list); | |
6873 | defsubr (&Sstart_process); | |
6874 | #ifdef HAVE_SOCKETS | |
2ccf3102 | 6875 | defsubr (&Sset_network_process_option); |
e690ca94 | 6876 | defsubr (&Smake_network_process); |
991234f0 | 6877 | defsubr (&Sformat_network_address); |
b8c7fd71 KS |
6878 | #endif /* HAVE_SOCKETS */ |
6879 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
161933c7 KS |
6880 | #ifdef SIOCGIFCONF |
6881 | defsubr (&Snetwork_interface_list); | |
6882 | #endif | |
6883 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
2ccf3102 | 6884 | defsubr (&Snetwork_interface_info); |
161933c7 | 6885 | #endif |
b8c7fd71 | 6886 | #endif /* HAVE_SOCKETS ... */ |
e690ca94 KS |
6887 | #ifdef DATAGRAM_SOCKETS |
6888 | defsubr (&Sprocess_datagram_address); | |
6889 | defsubr (&Sset_process_datagram_address); | |
6890 | #endif | |
d0d6b7c5 JB |
6891 | defsubr (&Saccept_process_output); |
6892 | defsubr (&Sprocess_send_region); | |
6893 | defsubr (&Sprocess_send_string); | |
6894 | defsubr (&Sinterrupt_process); | |
6895 | defsubr (&Skill_process); | |
6896 | defsubr (&Squit_process); | |
6897 | defsubr (&Sstop_process); | |
6898 | defsubr (&Scontinue_process); | |
b81ea5ef | 6899 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
6900 | defsubr (&Sprocess_send_eof); |
6901 | defsubr (&Ssignal_process); | |
6902 | defsubr (&Swaiting_for_user_input_p); | |
6903 | /* defsubr (&Sprocess_connection); */ | |
0fa1789e KH |
6904 | defsubr (&Sset_process_coding_system); |
6905 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
6906 | defsubr (&Sset_process_filter_multibyte); |
6907 | defsubr (&Sprocess_filter_multibyte_p); | |
d0d6b7c5 JB |
6908 | } |
6909 | ||
6720a7fb JB |
6910 | \f |
6911 | #else /* not subprocesses */ | |
6912 | ||
6913 | #include <sys/types.h> | |
6914 | #include <errno.h> | |
6915 | ||
6916 | #include "lisp.h" | |
6917 | #include "systime.h" | |
52a1b894 EZ |
6918 | #include "charset.h" |
6919 | #include "coding.h" | |
6720a7fb | 6920 | #include "termopts.h" |
81afb6d1 | 6921 | #include "sysselect.h" |
6720a7fb | 6922 | |
ff11dfa1 | 6923 | extern int frame_garbaged; |
6720a7fb | 6924 | |
f694e5d2 KH |
6925 | extern EMACS_TIME timer_check (); |
6926 | extern int timers_run; | |
6720a7fb | 6927 | |
9057ff80 KS |
6928 | Lisp_Object QCtype; |
6929 | ||
6720a7fb JB |
6930 | /* As described above, except assuming that there are no subprocesses: |
6931 | ||
6932 | Wait for timeout to elapse and/or keyboard input to be available. | |
6933 | ||
6934 | time_limit is: | |
6935 | timeout in seconds, or | |
6936 | zero for no limit, or | |
6937 | -1 means gobble data immediately available but don't wait for any. | |
6938 | ||
f76475ad | 6939 | read_kbd is a Lisp_Object: |
6720a7fb JB |
6940 | 0 to ignore keyboard input, or |
6941 | 1 to return when input is available, or | |
6942 | -1 means caller will actually read the input, so don't throw to | |
6943 | the quit handler. | |
b89a415a KS |
6944 | |
6945 | see full version for other parameters. We know that wait_proc will | |
6946 | always be NULL, since `subprocesses' isn't defined. | |
6720a7fb JB |
6947 | |
6948 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 6949 | output that arrives. |
6720a7fb | 6950 | |
eb8c3be9 | 6951 | Return true iff we received input from any process. */ |
6720a7fb JB |
6952 | |
6953 | int | |
214d6069 KS |
6954 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
6955 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
6956 | int time_limit, microsecs, read_kbd, do_display; |
6957 | Lisp_Object wait_for_cell; | |
6958 | struct Lisp_Process *wait_proc; | |
6959 | int just_wait_proc; | |
6720a7fb | 6960 | { |
52fd88d3 | 6961 | register int nfds; |
f694e5d2 | 6962 | EMACS_TIME end_time, timeout; |
8db121c4 | 6963 | SELECT_TYPE waitchannels; |
f694e5d2 | 6964 | int xerrno; |
6720a7fb JB |
6965 | |
6966 | /* What does time_limit really mean? */ | |
6967 | if (time_limit || microsecs) | |
6968 | { | |
6720a7fb | 6969 | EMACS_GET_TIME (end_time); |
52fd88d3 | 6970 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
6971 | EMACS_ADD_TIME (end_time, end_time, timeout); |
6972 | } | |
6720a7fb JB |
6973 | |
6974 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 6975 | and then turn off any other atimers, |
6720a7fb | 6976 | because the select emulator uses alarms. */ |
75eb23f1 | 6977 | stop_polling (); |
30904ab7 | 6978 | turn_on_atimers (0); |
6720a7fb | 6979 | |
52fd88d3 | 6980 | while (1) |
6720a7fb | 6981 | { |
bae8d137 | 6982 | int timeout_reduced_for_timers = 0; |
6720a7fb | 6983 | |
6720a7fb JB |
6984 | /* If calling from keyboard input, do not quit |
6985 | since we want to return C-g as an input character. | |
6986 | Otherwise, do pending quit if requested. */ | |
b89a415a | 6987 | if (read_kbd >= 0) |
6720a7fb JB |
6988 | QUIT; |
6989 | ||
0a65b032 | 6990 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6991 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
6992 | break; |
6993 | ||
bae8d137 RS |
6994 | /* Compute time from now till when time limit is up */ |
6995 | /* Exit if already run out */ | |
52fd88d3 EZ |
6996 | if (time_limit == -1) |
6997 | { | |
6998 | /* -1 specified for timeout means | |
6999 | gobble output available now | |
7000 | but don't wait at all. */ | |
7001 | ||
7002 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
7003 | } | |
7004 | else if (time_limit || microsecs) | |
6720a7fb | 7005 | { |
f694e5d2 KH |
7006 | EMACS_GET_TIME (timeout); |
7007 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
7008 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
7009 | break; |
7010 | } | |
52fd88d3 EZ |
7011 | else |
7012 | { | |
7013 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
7014 | } | |
6720a7fb | 7015 | |
bae8d137 RS |
7016 | /* If our caller will not immediately handle keyboard events, |
7017 | run timer events directly. | |
7018 | (Callers that will immediately read keyboard events | |
7019 | call timer_delay on their own.) */ | |
f3fbd155 | 7020 | if (NILP (wait_for_cell)) |
bae8d137 RS |
7021 | { |
7022 | EMACS_TIME timer_delay; | |
0a65b032 | 7023 | |
9baacf76 | 7024 | do |
0a65b032 | 7025 | { |
9baacf76 GM |
7026 | int old_timers_run = timers_run; |
7027 | timer_delay = timer_check (1); | |
7028 | if (timers_run != old_timers_run && do_display) | |
7029 | /* We must retry, since a timer may have requeued itself | |
7030 | and that could alter the time delay. */ | |
3007ebfb | 7031 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
7032 | else |
7033 | break; | |
0a65b032 | 7034 | } |
9baacf76 | 7035 | while (!detect_input_pending ()); |
0a65b032 | 7036 | |
52fd88d3 | 7037 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7038 | if (read_kbd != 0 |
52fd88d3 EZ |
7039 | && requeued_events_pending_p ()) |
7040 | break; | |
7041 | ||
f694e5d2 | 7042 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
7043 | { |
7044 | EMACS_TIME difference; | |
f694e5d2 | 7045 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
7046 | if (EMACS_TIME_NEG_P (difference)) |
7047 | { | |
f694e5d2 | 7048 | timeout = timer_delay; |
bae8d137 RS |
7049 | timeout_reduced_for_timers = 1; |
7050 | } | |
7051 | } | |
7052 | } | |
7053 | ||
6720a7fb JB |
7054 | /* Cause C-g and alarm signals to take immediate action, |
7055 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7056 | if (read_kbd < 0) |
6720a7fb JB |
7057 | set_waiting_for_input (&timeout); |
7058 | ||
0a65b032 RS |
7059 | /* Wait till there is something to do. */ |
7060 | ||
b89a415a | 7061 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
7062 | FD_ZERO (&waitchannels); |
7063 | else | |
7064 | FD_SET (0, &waitchannels); | |
7065 | ||
ff11dfa1 | 7066 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7067 | reprocess its display stuff. */ |
5164ee8e | 7068 | if (frame_garbaged && do_display) |
0a65b032 RS |
7069 | { |
7070 | clear_waiting_for_input (); | |
3007ebfb | 7071 | redisplay_preserve_echo_area (15); |
b89a415a | 7072 | if (read_kbd < 0) |
0a65b032 RS |
7073 | set_waiting_for_input (&timeout); |
7074 | } | |
6720a7fb | 7075 | |
b89a415a | 7076 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
7077 | { |
7078 | nfds = 0; | |
7079 | FD_ZERO (&waitchannels); | |
7080 | } | |
7081 | else | |
7082 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7083 | &timeout); | |
f694e5d2 KH |
7084 | |
7085 | xerrno = errno; | |
6720a7fb JB |
7086 | |
7087 | /* Make C-g and alarm signals set flags again */ | |
7088 | clear_waiting_for_input (); | |
7089 | ||
7090 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7091 | do_pending_window_change (0); |
6720a7fb | 7092 | |
f694e5d2 KH |
7093 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7094 | /* We waited the full specified time, so return now. */ | |
7095 | break; | |
7096 | ||
6720a7fb JB |
7097 | if (nfds == -1) |
7098 | { | |
7099 | /* If the system call was interrupted, then go around the | |
7100 | loop again. */ | |
f694e5d2 | 7101 | if (xerrno == EINTR) |
8db121c4 | 7102 | FD_ZERO (&waitchannels); |
f694e5d2 | 7103 | else |
68c45bf0 | 7104 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb JB |
7105 | } |
7106 | #ifdef sun | |
7107 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) | |
7108 | /* System sometimes fails to deliver SIGIO. */ | |
7109 | kill (getpid (), SIGIO); | |
7110 | #endif | |
7324d660 | 7111 | #ifdef SIGIO |
b89a415a | 7112 | if (read_kbd && interrupt_input && (waitchannels & 1)) |
e643c5be | 7113 | kill (getpid (), SIGIO); |
7324d660 | 7114 | #endif |
6720a7fb | 7115 | |
f694e5d2 KH |
7116 | /* Check for keyboard input */ |
7117 | ||
b89a415a | 7118 | if (read_kbd |
78c1afb6 | 7119 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7120 | { |
78c1afb6 | 7121 | swallow_events (do_display); |
f694e5d2 | 7122 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7123 | break; |
78c1afb6 EZ |
7124 | } |
7125 | ||
52fd88d3 | 7126 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7127 | if (read_kbd |
52fd88d3 EZ |
7128 | && requeued_events_pending_p ()) |
7129 | break; | |
7130 | ||
f854a00b RS |
7131 | /* If wait_for_cell. check for keyboard input |
7132 | but don't run any timers. | |
7133 | ??? (It seems wrong to me to check for keyboard | |
7134 | input at all when wait_for_cell, but the code | |
7135 | has been this way since July 1994. | |
7136 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7137 | if (! NILP (wait_for_cell) |
f854a00b RS |
7138 | && detect_input_pending ()) |
7139 | { | |
7140 | swallow_events (do_display); | |
7141 | if (detect_input_pending ()) | |
7142 | break; | |
7143 | } | |
7144 | ||
0a65b032 | 7145 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7146 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7147 | break; |
6720a7fb JB |
7148 | } |
7149 | ||
a87b802f JB |
7150 | start_polling (); |
7151 | ||
6720a7fb JB |
7152 | return 0; |
7153 | } | |
7154 | ||
7155 | ||
e2ba787b PJ |
7156 | /* Don't confuse make-docfile by having two doc strings for this function. |
7157 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 7158 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
7159 | 0) |
7160 | (name) | |
6720a7fb JB |
7161 | register Lisp_Object name; |
7162 | { | |
7163 | return Qnil; | |
7164 | } | |
7165 | ||
e2ba787b PJ |
7166 | /* Don't confuse make-docfile by having two doc strings for this function. |
7167 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 7168 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7169 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7170 | 1, 1, 0, | |
7171 | 0) | |
7172 | (process) | |
52a1b894 EZ |
7173 | register Lisp_Object process; |
7174 | { | |
7175 | /* Ignore the argument and return the value of | |
7176 | inherit-process-coding-system. */ | |
7177 | return inherit_process_coding_system ? Qt : Qnil; | |
7178 | } | |
7179 | ||
6720a7fb JB |
7180 | /* Kill all processes associated with `buffer'. |
7181 | If `buffer' is nil, kill all processes. | |
7182 | Since we have no subprocesses, this does nothing. */ | |
7183 | ||
d9bb0c32 | 7184 | void |
6720a7fb JB |
7185 | kill_buffer_processes (buffer) |
7186 | Lisp_Object buffer; | |
7187 | { | |
7188 | } | |
7189 | ||
02b9b4fd | 7190 | void |
6720a7fb JB |
7191 | init_process () |
7192 | { | |
7193 | } | |
7194 | ||
02b9b4fd | 7195 | void |
6720a7fb JB |
7196 | syms_of_process () |
7197 | { | |
9057ff80 KS |
7198 | QCtype = intern (":type"); |
7199 | staticpro (&QCtype); | |
7200 | ||
6720a7fb | 7201 | defsubr (&Sget_buffer_process); |
52a1b894 | 7202 | defsubr (&Sprocess_inherit_coding_system_flag); |
6720a7fb JB |
7203 | } |
7204 | ||
7205 | \f | |
7206 | #endif /* not subprocesses */ | |
ab5796a9 MB |
7207 | |
7208 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
7209 | (do not change this comment) */ |