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 | 120 | |
fa8459a3 | 121 | #include "lisp.h" |
d0d6b7c5 | 122 | #include "systime.h" |
36ebaafa | 123 | #include "systty.h" |
d0d6b7c5 | 124 | |
d0d6b7c5 JB |
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 | |
d9e7c622 | 190 | extern char *get_operating_system_release (); |
41d03b9a | 191 | |
3ec68006 | 192 | #ifndef USE_CRT_DLL |
b062d1fe | 193 | extern int errno; |
3ec68006 | 194 | #endif |
b062d1fe | 195 | #ifdef VMS |
d0d6b7c5 | 196 | extern char *sys_errlist[]; |
b062d1fe | 197 | #endif |
d0d6b7c5 | 198 | |
5f0929a7 RS |
199 | #ifndef HAVE_H_ERRNO |
200 | extern int h_errno; | |
201 | #endif | |
202 | ||
d0d6b7c5 JB |
203 | /* t means use pty, nil means use a pipe, |
204 | maybe other values to come. */ | |
dd2281ae | 205 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 JB |
206 | |
207 | #ifdef SKTPAIR | |
208 | #ifndef HAVE_SOCKETS | |
209 | #include <sys/socket.h> | |
210 | #endif | |
211 | #endif /* SKTPAIR */ | |
212 | ||
17d02632 KH |
213 | /* These next two vars are non-static since sysdep.c uses them in the |
214 | emulation of `select'. */ | |
d0d6b7c5 | 215 | /* Number of events of change of status of a process. */ |
17d02632 | 216 | int process_tick; |
d0d6b7c5 | 217 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 218 | int update_tick; |
d0d6b7c5 | 219 | |
dd2a17ab KS |
220 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
221 | ||
222 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
223 | #undef NON_BLOCKING_CONNECT | |
224 | #else | |
225 | #ifndef NON_BLOCKING_CONNECT | |
226 | #ifdef HAVE_SOCKETS | |
227 | #ifdef HAVE_SELECT | |
228 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
229 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
230 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
231 | #define NON_BLOCKING_CONNECT | |
232 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
233 | #endif /* O_NONBLOCK || O_NDELAY */ | |
234 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
235 | #endif /* HAVE_SELECT */ | |
236 | #endif /* HAVE_SOCKETS */ | |
237 | #endif /* NON_BLOCKING_CONNECT */ | |
238 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
239 | ||
e690ca94 KS |
240 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
241 | this system. We need to read full packets, so we need a | |
242 | "non-destructive" select. So we require either native select, | |
243 | or emulation of select using FIONREAD. */ | |
244 | ||
e690ca94 KS |
245 | #ifdef BROKEN_DATAGRAM_SOCKETS |
246 | #undef DATAGRAM_SOCKETS | |
247 | #else | |
248 | #ifndef DATAGRAM_SOCKETS | |
249 | #ifdef HAVE_SOCKETS | |
250 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
251 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
252 | #define DATAGRAM_SOCKETS | |
253 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
254 | #endif /* HAVE_SELECT || FIONREAD */ | |
255 | #endif /* HAVE_SOCKETS */ | |
256 | #endif /* DATAGRAM_SOCKETS */ | |
257 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
258 | ||
dd2a17ab KS |
259 | #ifdef TERM |
260 | #undef NON_BLOCKING_CONNECT | |
e690ca94 | 261 | #undef DATAGRAM_SOCKETS |
dd2a17ab KS |
262 | #endif |
263 | ||
2d942bfa KS |
264 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
265 | #ifdef EMACS_HAS_USECS | |
266 | #define ADAPTIVE_READ_BUFFERING | |
267 | #endif | |
268 | #endif | |
269 | ||
270 | #ifdef ADAPTIVE_READ_BUFFERING | |
271 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
272 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
273 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
274 | ||
db853b7a KS |
275 | /* Number of processes which have a non-zero read_output_delay, |
276 | and therefore might be delayed for adaptive read buffering. */ | |
2d942bfa KS |
277 | |
278 | static int process_output_delay_count; | |
279 | ||
db853b7a | 280 | /* Non-zero if any process has non-nil read_output_skip. */ |
2d942bfa KS |
281 | |
282 | static int process_output_skip; | |
283 | ||
284 | /* Non-nil means to delay reading process output to improve buffering. | |
285 | A value of t means that delay is reset after each send, any other | |
db853b7a KS |
286 | non-nil value does not reset the delay. A value of nil disables |
287 | adaptive read buffering completely. */ | |
2d942bfa KS |
288 | static Lisp_Object Vprocess_adaptive_read_buffering; |
289 | #else | |
290 | #define process_output_delay_count 0 | |
291 | #endif | |
292 | ||
e690ca94 | 293 | |
5886acf9 | 294 | #include "sysselect.h" |
d0d6b7c5 | 295 | |
ff6daed3 KS |
296 | static int keyboard_bit_set P_ ((SELECT_TYPE *)); |
297 | static void deactivate_process P_ ((Lisp_Object)); | |
298 | static void status_notify P_ ((struct Lisp_Process *)); | |
299 | static int read_process_output P_ ((Lisp_Object, int)); | |
41d03b9a | 300 | |
583dcae4 | 301 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 302 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 303 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
304 | #define POLL_FOR_INPUT |
305 | #endif | |
306 | ||
a69281ff | 307 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 308 | |
dd2281ae RS |
309 | static SELECT_TYPE input_wait_mask; |
310 | ||
a69281ff RS |
311 | /* Mask that excludes keyboard input descriptor (s). */ |
312 | ||
313 | static SELECT_TYPE non_keyboard_wait_mask; | |
314 | ||
b5dc1c83 RS |
315 | /* Mask that excludes process input descriptor (s). */ |
316 | ||
317 | static SELECT_TYPE non_process_wait_mask; | |
318 | ||
bad49fc7 | 319 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
320 | /* Mask of bits indicating the descriptors that we wait for connect to |
321 | complete on. Once they complete, they are removed from this mask | |
322 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
323 | ||
324 | static SELECT_TYPE connect_wait_mask; | |
325 | ||
326 | /* Number of bits set in connect_wait_mask. */ | |
327 | static int num_pending_connects; | |
328 | ||
bad49fc7 KS |
329 | #define IF_NON_BLOCKING_CONNECT(s) s |
330 | #else | |
331 | #define IF_NON_BLOCKING_CONNECT(s) | |
332 | #endif | |
333 | ||
7d0e672e RS |
334 | /* The largest descriptor currently in use for a process object. */ |
335 | static int max_process_desc; | |
336 | ||
a69281ff RS |
337 | /* The largest descriptor currently in use for keyboard input. */ |
338 | static int max_keyboard_desc; | |
d0d6b7c5 | 339 | |
dd2281ae RS |
340 | /* Nonzero means delete a process right away if it exits. */ |
341 | static int delete_exited_processes; | |
d0d6b7c5 JB |
342 | |
343 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 344 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
345 | |
346 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 347 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
348 | |
349 | /* Buffered-ahead input char from process, indexed by channel. | |
350 | -1 means empty (no char is buffered). | |
351 | Used on sys V where the only way to tell if there is any | |
352 | output from the process is to read at least one char. | |
353 | Always -1 on systems that support FIONREAD. */ | |
354 | ||
e98d950b RS |
355 | /* Don't make static; need to access externally. */ |
356 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 357 | |
0fa1789e | 358 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
359 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
360 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 361 | |
e690ca94 KS |
362 | #ifdef DATAGRAM_SOCKETS |
363 | /* Table of `partner address' for datagram sockets. */ | |
364 | struct sockaddr_and_len { | |
365 | struct sockaddr *sa; | |
366 | int len; | |
367 | } datagram_address[MAXDESC]; | |
368 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
bed9664a | 369 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0) |
e690ca94 KS |
370 | #else |
371 | #define DATAGRAM_CHAN_P(chan) (0) | |
372 | #define DATAGRAM_CONN_P(proc) (0) | |
373 | #endif | |
374 | ||
dd2281ae | 375 | static Lisp_Object get_process (); |
dd2a17ab | 376 | static void exec_sentinel (); |
93b4f699 | 377 | |
fb4c3627 | 378 | extern EMACS_TIME timer_check (); |
5de50bfb | 379 | extern int timers_run; |
fb4c3627 | 380 | |
93b4f699 RS |
381 | /* Maximum number of bytes to send to a pty without an eof. */ |
382 | static int pty_max_bytes; | |
3b9a3dfa | 383 | |
875e6b94 | 384 | #ifdef HAVE_PTYS |
e62cab61 DL |
385 | #ifdef HAVE_PTY_H |
386 | #include <pty.h> | |
387 | #endif | |
875e6b94 | 388 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
389 | |
390 | static char pty_name[24]; | |
875e6b94 | 391 | #endif |
d0d6b7c5 JB |
392 | \f |
393 | /* Compute the Lisp form of the process status, p->status, from | |
394 | the numeric status that was returned by `wait'. */ | |
395 | ||
ff6daed3 | 396 | static Lisp_Object status_convert (); |
f9738840 | 397 | |
ff6daed3 | 398 | static void |
d0d6b7c5 JB |
399 | update_status (p) |
400 | struct Lisp_Process *p; | |
401 | { | |
402 | union { int i; WAITTYPE wt; } u; | |
403 | u.i = XFASTINT (p->raw_status_low) + (XFASTINT (p->raw_status_high) << 16); | |
404 | p->status = status_convert (u.wt); | |
405 | p->raw_status_low = Qnil; | |
406 | p->raw_status_high = Qnil; | |
407 | } | |
408 | ||
177c0ea7 | 409 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
410 | the list that we use internally. */ |
411 | ||
ff6daed3 | 412 | static Lisp_Object |
d0d6b7c5 JB |
413 | status_convert (w) |
414 | WAITTYPE w; | |
415 | { | |
416 | if (WIFSTOPPED (w)) | |
417 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
418 | else if (WIFEXITED (w)) | |
419 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
420 | WCOREDUMP (w) ? Qt : Qnil)); | |
421 | else if (WIFSIGNALED (w)) | |
422 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
423 | WCOREDUMP (w) ? Qt : Qnil)); | |
424 | else | |
425 | return Qrun; | |
426 | } | |
427 | ||
428 | /* Given a status-list, extract the three pieces of information | |
429 | and store them individually through the three pointers. */ | |
430 | ||
ff6daed3 | 431 | static void |
d0d6b7c5 JB |
432 | decode_status (l, symbol, code, coredump) |
433 | Lisp_Object l; | |
434 | Lisp_Object *symbol; | |
435 | int *code; | |
436 | int *coredump; | |
437 | { | |
438 | Lisp_Object tem; | |
439 | ||
bcd69aea | 440 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
441 | { |
442 | *symbol = l; | |
443 | *code = 0; | |
444 | *coredump = 0; | |
445 | } | |
446 | else | |
447 | { | |
70949dac KR |
448 | *symbol = XCAR (l); |
449 | tem = XCDR (l); | |
450 | *code = XFASTINT (XCAR (tem)); | |
451 | tem = XCDR (tem); | |
d0d6b7c5 JB |
452 | *coredump = !NILP (tem); |
453 | } | |
454 | } | |
455 | ||
456 | /* Return a string describing a process status list. */ | |
457 | ||
116c423c KS |
458 | static Lisp_Object |
459 | status_message (p) | |
460 | struct Lisp_Process *p; | |
d0d6b7c5 | 461 | { |
116c423c | 462 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
463 | Lisp_Object symbol; |
464 | int code, coredump; | |
465 | Lisp_Object string, string2; | |
466 | ||
467 | decode_status (status, &symbol, &code, &coredump); | |
468 | ||
469 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
470 | { | |
68c45bf0 | 471 | char *signame; |
ca9c0567 | 472 | synchronize_system_messages_locale (); |
68c45bf0 | 473 | signame = strsignal (code); |
b97ad9ea RS |
474 | if (signame == 0) |
475 | signame = "unknown"; | |
476 | string = build_string (signame); | |
d0d6b7c5 | 477 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
a814cc69 | 478 | SSET (string, 0, DOWNCASE (SREF (string, 0))); |
d0d6b7c5 JB |
479 | return concat2 (string, string2); |
480 | } | |
481 | else if (EQ (symbol, Qexit)) | |
482 | { | |
116c423c KS |
483 | if (NETCONN1_P (p)) |
484 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
485 | if (code == 0) |
486 | return build_string ("finished\n"); | |
f2980264 | 487 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 488 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
489 | return concat3 (build_string ("exited abnormally with code "), |
490 | string, string2); | |
d0d6b7c5 | 491 | } |
dd2a17ab KS |
492 | else if (EQ (symbol, Qfailed)) |
493 | { | |
494 | string = Fnumber_to_string (make_number (code)); | |
495 | string2 = build_string ("\n"); | |
e690ca94 KS |
496 | return concat3 (build_string ("failed with code "), |
497 | string, string2); | |
dd2a17ab | 498 | } |
d0d6b7c5 JB |
499 | else |
500 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
501 | } | |
502 | \f | |
503 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 504 | |
875e6b94 KH |
505 | /* Open an available pty, returning a file descriptor. |
506 | Return -1 on failure. | |
507 | The file name of the terminal corresponding to the pty | |
508 | is left in the variable pty_name. */ | |
509 | ||
ff6daed3 | 510 | static int |
d0d6b7c5 JB |
511 | allocate_pty () |
512 | { | |
dfcf069d | 513 | register int c, i; |
d0d6b7c5 JB |
514 | int fd; |
515 | ||
516 | #ifdef PTY_ITERATION | |
517 | PTY_ITERATION | |
518 | #else | |
519 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
520 | for (i = 0; i < 16; i++) | |
521 | #endif | |
522 | { | |
26d7389d | 523 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
524 | #ifdef PTY_NAME_SPRINTF |
525 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
526 | #else |
527 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
528 | #endif /* no PTY_NAME_SPRINTF */ |
529 | ||
4d7c105e RS |
530 | #ifdef PTY_OPEN |
531 | PTY_OPEN; | |
532 | #else /* no PTY_OPEN */ | |
34967d0f | 533 | { |
34967d0f SM |
534 | # ifdef IRIS |
535 | /* Unusual IRIS code */ | |
536 | *ptyv = emacs_open ("/dev/ptc", O_RDWR | O_NDELAY, 0); | |
537 | if (fd < 0) | |
538 | return -1; | |
539 | if (fstat (fd, &stb) < 0) | |
540 | return -1; | |
541 | # else /* not IRIS */ | |
542 | { /* Some systems name their pseudoterminals so that there are gaps in | |
543 | the usual sequence - for example, on HP9000/S700 systems, there | |
544 | are no pseudoterminals with names ending in 'f'. So we wait for | |
545 | three failures in a row before deciding that we've reached the | |
546 | end of the ptys. */ | |
547 | int failed_count = 0; | |
f3d9532b | 548 | |
34967d0f SM |
549 | if (stat (pty_name, &stb) < 0) |
550 | { | |
551 | failed_count++; | |
552 | if (failed_count >= 3) | |
553 | return -1; | |
554 | } | |
555 | else | |
556 | failed_count = 0; | |
32676c08 | 557 | } |
34967d0f SM |
558 | # ifdef O_NONBLOCK |
559 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
560 | # else | |
561 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
562 | # endif | |
563 | # endif /* not IRIS */ | |
564 | } | |
4d7c105e | 565 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
566 | |
567 | if (fd >= 0) | |
568 | { | |
569 | /* check to make certain that both sides are available | |
570 | this avoids a nasty yet stupid bug in rlogins */ | |
571 | #ifdef PTY_TTY_NAME_SPRINTF | |
572 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 JB |
573 | #else |
574 | sprintf (pty_name, "/dev/tty%c%x", c, i); | |
d0d6b7c5 JB |
575 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
576 | #ifndef UNIPLUS | |
577 | if (access (pty_name, 6) != 0) | |
578 | { | |
68c45bf0 | 579 | emacs_close (fd); |
34967d0f | 580 | # if !defined(IRIS) && !defined(__sgi) |
d0d6b7c5 | 581 | continue; |
34967d0f | 582 | # else |
d0d6b7c5 | 583 | return -1; |
34967d0f | 584 | # endif /* IRIS */ |
d0d6b7c5 JB |
585 | } |
586 | #endif /* not UNIPLUS */ | |
587 | setup_pty (fd); | |
588 | return fd; | |
589 | } | |
590 | } | |
591 | return -1; | |
592 | } | |
593 | #endif /* HAVE_PTYS */ | |
594 | \f | |
ff6daed3 | 595 | static Lisp_Object |
d0d6b7c5 JB |
596 | make_process (name) |
597 | Lisp_Object name; | |
598 | { | |
599 | register Lisp_Object val, tem, name1; | |
600 | register struct Lisp_Process *p; | |
601 | char suffix[10]; | |
602 | register int i; | |
603 | ||
98423852 | 604 | p = allocate_process (); |
23d6bb9c | 605 | |
1d056e64 KH |
606 | XSETINT (p->infd, -1); |
607 | XSETINT (p->outfd, -1); | |
22719df2 KH |
608 | XSETFASTINT (p->pid, 0); |
609 | XSETFASTINT (p->tick, 0); | |
610 | XSETFASTINT (p->update_tick, 0); | |
d0d6b7c5 JB |
611 | p->raw_status_low = Qnil; |
612 | p->raw_status_high = Qnil; | |
613 | p->status = Qrun; | |
614 | p->mark = Fmake_marker (); | |
615 | ||
2d942bfa KS |
616 | #ifdef ADAPTIVE_READ_BUFFERING |
617 | p->adaptive_read_buffering = Qnil; | |
618 | XSETFASTINT (p->read_output_delay, 0); | |
619 | p->read_output_skip = Qnil; | |
620 | #endif | |
621 | ||
d0d6b7c5 JB |
622 | /* If name is already in use, modify it until it is unused. */ |
623 | ||
624 | name1 = name; | |
625 | for (i = 1; ; i++) | |
626 | { | |
627 | tem = Fget_process (name1); | |
628 | if (NILP (tem)) break; | |
629 | sprintf (suffix, "<%d>", i); | |
630 | name1 = concat2 (name, build_string (suffix)); | |
631 | } | |
632 | name = name1; | |
633 | p->name = name; | |
23d6bb9c | 634 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
635 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
636 | return val; | |
637 | } | |
638 | ||
ff6daed3 | 639 | static void |
d0d6b7c5 JB |
640 | remove_process (proc) |
641 | register Lisp_Object proc; | |
642 | { | |
643 | register Lisp_Object pair; | |
644 | ||
645 | pair = Frassq (proc, Vprocess_alist); | |
646 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
647 | |
648 | deactivate_process (proc); | |
649 | } | |
03f04413 KH |
650 | |
651 | /* Setup coding systems of PROCESS. */ | |
652 | ||
653 | void | |
654 | setup_process_coding_systems (process) | |
655 | Lisp_Object process; | |
656 | { | |
657 | struct Lisp_Process *p = XPROCESS (process); | |
658 | int inch = XINT (p->infd); | |
659 | int outch = XINT (p->outfd); | |
660 | ||
20f1ef2e KH |
661 | if (inch < 0 || outch < 0) |
662 | return; | |
663 | ||
03f04413 KH |
664 | if (!proc_decode_coding_system[inch]) |
665 | proc_decode_coding_system[inch] | |
666 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
667 | setup_coding_system (p->decode_coding_system, | |
668 | proc_decode_coding_system[inch]); | |
669 | if (! NILP (p->filter)) | |
670 | { | |
671 | if (NILP (p->filter_multibyte)) | |
672 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
673 | } | |
674 | else if (BUFFERP (p->buffer)) | |
675 | { | |
676 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
677 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
678 | } | |
679 | ||
680 | if (!proc_encode_coding_system[outch]) | |
681 | proc_encode_coding_system[outch] | |
682 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
683 | setup_coding_system (p->encode_coding_system, | |
684 | proc_encode_coding_system[outch]); | |
685 | } | |
d0d6b7c5 JB |
686 | \f |
687 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
688 | doc: /* Return t if OBJECT is a process. */) |
689 | (object) | |
4ee3e309 | 690 | Lisp_Object object; |
d0d6b7c5 | 691 | { |
4ee3e309 | 692 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
693 | } |
694 | ||
695 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
696 | doc: /* Return the process named NAME, or nil if there is none. */) |
697 | (name) | |
d0d6b7c5 JB |
698 | register Lisp_Object name; |
699 | { | |
bcd69aea | 700 | if (PROCESSP (name)) |
d0d6b7c5 | 701 | return name; |
b7826503 | 702 | CHECK_STRING (name); |
d0d6b7c5 JB |
703 | return Fcdr (Fassoc (name, Vprocess_alist)); |
704 | } | |
705 | ||
706 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
707 | doc: /* Return the (or a) process associated with BUFFER. |
708 | BUFFER may be a buffer or the name of one. */) | |
709 | (buffer) | |
4ee3e309 | 710 | register Lisp_Object buffer; |
d0d6b7c5 JB |
711 | { |
712 | register Lisp_Object buf, tail, proc; | |
713 | ||
4ee3e309 EN |
714 | if (NILP (buffer)) return Qnil; |
715 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
716 | if (NILP (buf)) return Qnil; |
717 | ||
718 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
719 | { | |
720 | proc = Fcdr (Fcar (tail)); | |
bcd69aea | 721 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
722 | return proc; |
723 | } | |
724 | return Qnil; | |
725 | } | |
726 | ||
ebb9e16f JB |
727 | /* This is how commands for the user decode process arguments. It |
728 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
729 | Buffers denote the first process in the buffer, and nil denotes the | |
730 | current buffer. */ | |
d0d6b7c5 | 731 | |
77b221b1 | 732 | static Lisp_Object |
d0d6b7c5 JB |
733 | get_process (name) |
734 | register Lisp_Object name; | |
735 | { | |
1619761d KH |
736 | register Lisp_Object proc, obj; |
737 | if (STRINGP (name)) | |
738 | { | |
739 | obj = Fget_process (name); | |
740 | if (NILP (obj)) | |
741 | obj = Fget_buffer (name); | |
742 | if (NILP (obj)) | |
d5db4077 | 743 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
744 | } |
745 | else if (NILP (name)) | |
746 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 747 | else |
1619761d KH |
748 | obj = name; |
749 | ||
750 | /* Now obj should be either a buffer object or a process object. | |
751 | */ | |
752 | if (BUFFERP (obj)) | |
d0d6b7c5 | 753 | { |
1619761d | 754 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 755 | if (NILP (proc)) |
d5db4077 | 756 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 757 | } |
d0d6b7c5 | 758 | else |
1619761d | 759 | { |
b7826503 | 760 | CHECK_PROCESS (obj); |
1619761d KH |
761 | proc = obj; |
762 | } | |
763 | return proc; | |
d0d6b7c5 JB |
764 | } |
765 | ||
766 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, | |
fdb82f93 PJ |
767 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
768 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
769 | nil, indicating the current buffer's process. */) | |
770 | (process) | |
4ee3e309 | 771 | register Lisp_Object process; |
d0d6b7c5 | 772 | { |
ff6daed3 KS |
773 | register struct Lisp_Process *p; |
774 | ||
4ee3e309 | 775 | process = get_process (process); |
ff6daed3 KS |
776 | p = XPROCESS (process); |
777 | ||
778 | p->raw_status_low = Qnil; | |
779 | p->raw_status_high = Qnil; | |
780 | if (NETCONN1_P (p)) | |
d0d6b7c5 | 781 | { |
ff6daed3 KS |
782 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
783 | XSETINT (p->tick, ++process_tick); | |
784 | status_notify (p); | |
d0d6b7c5 | 785 | } |
ff6daed3 | 786 | else if (XINT (p->infd) >= 0) |
d0d6b7c5 | 787 | { |
4ee3e309 | 788 | Fkill_process (process, Qnil); |
d0d6b7c5 | 789 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ |
ff6daed3 | 790 | p->status |
d0d6b7c5 | 791 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); |
ff6daed3 KS |
792 | XSETINT (p->tick, ++process_tick); |
793 | status_notify (p); | |
d0d6b7c5 | 794 | } |
116c423c | 795 | remove_process (process); |
d0d6b7c5 JB |
796 | return Qnil; |
797 | } | |
798 | \f | |
799 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
800 | doc: /* Return the status of PROCESS. |
801 | The returned value is one of the following symbols: | |
802 | run -- for a process that is running. | |
803 | stop -- for a process stopped but continuable. | |
804 | exit -- for a process that has exited. | |
805 | signal -- for a process that has got a fatal signal. | |
806 | open -- for a network stream connection that is open. | |
e690ca94 | 807 | listen -- for a network stream server that is listening. |
fdb82f93 | 808 | closed -- for a network stream connection that is closed. |
e4984112 KS |
809 | connect -- when waiting for a non-blocking connection to complete. |
810 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
811 | nil -- if arg is a process name and no such process exists. |
812 | PROCESS may be a process, a buffer, the name of a process, or | |
813 | nil, indicating the current buffer's process. */) | |
814 | (process) | |
4ee3e309 | 815 | register Lisp_Object process; |
d0d6b7c5 JB |
816 | { |
817 | register struct Lisp_Process *p; | |
818 | register Lisp_Object status; | |
343f4114 | 819 | |
4ee3e309 EN |
820 | if (STRINGP (process)) |
821 | process = Fget_process (process); | |
343f4114 | 822 | else |
4ee3e309 | 823 | process = get_process (process); |
343f4114 | 824 | |
4ee3e309 EN |
825 | if (NILP (process)) |
826 | return process; | |
343f4114 | 827 | |
4ee3e309 | 828 | p = XPROCESS (process); |
d0d6b7c5 JB |
829 | if (!NILP (p->raw_status_low)) |
830 | update_status (p); | |
831 | status = p->status; | |
bcd69aea | 832 | if (CONSP (status)) |
70949dac | 833 | status = XCAR (status); |
e690ca94 | 834 | if (NETCONN1_P (p)) |
d0d6b7c5 | 835 | { |
e690ca94 | 836 | if (EQ (status, Qexit)) |
d0d6b7c5 | 837 | status = Qclosed; |
e690ca94 KS |
838 | else if (EQ (p->command, Qt)) |
839 | status = Qstop; | |
840 | else if (EQ (status, Qrun)) | |
841 | status = Qopen; | |
d0d6b7c5 JB |
842 | } |
843 | return status; | |
844 | } | |
845 | ||
846 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
847 | 1, 1, 0, | |
fdb82f93 PJ |
848 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
849 | If PROCESS has not yet exited or died, return 0. */) | |
850 | (process) | |
4ee3e309 | 851 | register Lisp_Object process; |
d0d6b7c5 | 852 | { |
b7826503 | 853 | CHECK_PROCESS (process); |
4ee3e309 EN |
854 | if (!NILP (XPROCESS (process)->raw_status_low)) |
855 | update_status (XPROCESS (process)); | |
856 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 857 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
858 | return make_number (0); |
859 | } | |
860 | ||
861 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 862 | doc: /* Return the process id of PROCESS. |
f3d9532b | 863 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 PJ |
864 | For a network connection, this value is nil. */) |
865 | (process) | |
4ee3e309 | 866 | register Lisp_Object process; |
d0d6b7c5 | 867 | { |
b7826503 | 868 | CHECK_PROCESS (process); |
4ee3e309 | 869 | return XPROCESS (process)->pid; |
d0d6b7c5 JB |
870 | } |
871 | ||
872 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
873 | doc: /* Return the name of PROCESS, as a string. |
874 | This is the name of the program invoked in PROCESS, | |
875 | possibly modified to make it unique among process names. */) | |
876 | (process) | |
4ee3e309 | 877 | register Lisp_Object process; |
d0d6b7c5 | 878 | { |
b7826503 | 879 | CHECK_PROCESS (process); |
4ee3e309 | 880 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
881 | } |
882 | ||
883 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
884 | doc: /* Return the command that was executed to start PROCESS. |
885 | This is a list of strings, the first string being the program executed | |
886 | and the rest of the strings being the arguments given to it. | |
887 | For a non-child channel, this is nil. */) | |
888 | (process) | |
4ee3e309 | 889 | register Lisp_Object process; |
d0d6b7c5 | 890 | { |
b7826503 | 891 | CHECK_PROCESS (process); |
4ee3e309 | 892 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
893 | } |
894 | ||
3b9a3dfa | 895 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
896 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
897 | This is the terminal that the process itself reads and writes on, | |
898 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
899 | (process) | |
4ee3e309 | 900 | register Lisp_Object process; |
3b9a3dfa | 901 | { |
b7826503 | 902 | CHECK_PROCESS (process); |
4ee3e309 | 903 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
904 | } |
905 | ||
d0d6b7c5 | 906 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
907 | 2, 2, 0, |
908 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
909 | (process, buffer) | |
4ee3e309 | 910 | register Lisp_Object process, buffer; |
d0d6b7c5 | 911 | { |
e690ca94 KS |
912 | struct Lisp_Process *p; |
913 | ||
b7826503 | 914 | CHECK_PROCESS (process); |
d0d6b7c5 | 915 | if (!NILP (buffer)) |
b7826503 | 916 | CHECK_BUFFER (buffer); |
e690ca94 KS |
917 | p = XPROCESS (process); |
918 | p->buffer = buffer; | |
919 | if (NETCONN1_P (p)) | |
920 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); | |
03f04413 | 921 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
922 | return buffer; |
923 | } | |
924 | ||
925 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
926 | 1, 1, 0, |
927 | doc: /* Return the buffer PROCESS is associated with. | |
928 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
929 | (process) | |
4ee3e309 | 930 | register Lisp_Object process; |
d0d6b7c5 | 931 | { |
b7826503 | 932 | CHECK_PROCESS (process); |
4ee3e309 | 933 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
934 | } |
935 | ||
936 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
937 | 1, 1, 0, |
938 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
939 | (process) | |
4ee3e309 | 940 | register Lisp_Object process; |
d0d6b7c5 | 941 | { |
b7826503 | 942 | CHECK_PROCESS (process); |
4ee3e309 | 943 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
944 | } |
945 | ||
946 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
947 | 2, 2, 0, |
948 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
949 | t means stop accepting output from the process. | |
3452df9e KS |
950 | |
951 | When a process has a filter, its buffer is not used for output. | |
952 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 953 | passed to the filter. |
3452df9e | 954 | |
fdb82f93 | 955 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
956 | The string argument is normally a multibyte string, except: |
957 | - if the process' input coding system is no-conversion or raw-text, | |
958 | it is a unibyte string (the non-converted input), or else | |
959 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
960 | string (the result of converting the decoded input multibyte | |
961 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 962 | (process, filter) |
4ee3e309 | 963 | register Lisp_Object process, filter; |
d0d6b7c5 | 964 | { |
471f86b9 | 965 | struct Lisp_Process *p; |
177c0ea7 | 966 | |
b7826503 | 967 | CHECK_PROCESS (process); |
471f86b9 GM |
968 | p = XPROCESS (process); |
969 | ||
970 | /* Don't signal an error if the process' input file descriptor | |
971 | is closed. This could make debugging Lisp more difficult, | |
972 | for example when doing something like | |
973 | ||
974 | (setq process (start-process ...)) | |
975 | (debug) | |
976 | (set-process-filter process ...) */ | |
177c0ea7 | 977 | |
471f86b9 | 978 | if (XINT (p->infd) >= 0) |
a69281ff | 979 | { |
e690ca94 | 980 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 GM |
981 | { |
982 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
983 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
984 | } | |
e690ca94 KS |
985 | else if (EQ (p->filter, Qt) |
986 | && !EQ (p->command, Qt)) /* Network process not stopped. */ | |
471f86b9 GM |
987 | { |
988 | FD_SET (XINT (p->infd), &input_wait_mask); | |
989 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
990 | } | |
a69281ff | 991 | } |
177c0ea7 | 992 | |
471f86b9 | 993 | p->filter = filter; |
e690ca94 KS |
994 | if (NETCONN1_P (p)) |
995 | p->childp = Fplist_put (p->childp, QCfilter, filter); | |
03f04413 | 996 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
997 | return filter; |
998 | } | |
999 | ||
1000 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1001 | 1, 1, 0, |
1002 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1003 | See `set-process-filter' for more info on filter functions. */) | |
1004 | (process) | |
4ee3e309 | 1005 | register Lisp_Object process; |
d0d6b7c5 | 1006 | { |
b7826503 | 1007 | CHECK_PROCESS (process); |
4ee3e309 | 1008 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1009 | } |
1010 | ||
1011 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1012 | 2, 2, 0, |
1013 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1014 | The sentinel is called as a function when the process changes state. | |
1015 | It gets two arguments: the process, and a string describing the change. */) | |
1016 | (process, sentinel) | |
4ee3e309 | 1017 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 1018 | { |
2ccf3102 KS |
1019 | struct Lisp_Process *p; |
1020 | ||
b7826503 | 1021 | CHECK_PROCESS (process); |
2ccf3102 KS |
1022 | p = XPROCESS (process); |
1023 | ||
1024 | p->sentinel = sentinel; | |
1025 | if (NETCONN1_P (p)) | |
1026 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); | |
d0d6b7c5 JB |
1027 | return sentinel; |
1028 | } | |
1029 | ||
1030 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1031 | 1, 1, 0, |
1032 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1033 | See `set-process-sentinel' for more info on sentinels. */) | |
1034 | (process) | |
4ee3e309 | 1035 | register Lisp_Object process; |
d0d6b7c5 | 1036 | { |
b7826503 | 1037 | CHECK_PROCESS (process); |
4ee3e309 | 1038 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1039 | } |
1040 | ||
396df322 | 1041 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1042 | Sset_process_window_size, 3, 3, 0, |
1043 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
1044 | (process, height, width) | |
4ee3e309 | 1045 | register Lisp_Object process, height, width; |
396df322 | 1046 | { |
b7826503 PJ |
1047 | CHECK_PROCESS (process); |
1048 | CHECK_NATNUM (height); | |
1049 | CHECK_NATNUM (width); | |
177c0ea7 | 1050 | |
989521fd | 1051 | if (XINT (XPROCESS (process)->infd) < 0 |
471f86b9 GM |
1052 | || set_window_size (XINT (XPROCESS (process)->infd), |
1053 | XINT (height), XINT (width)) <= 0) | |
396df322 RS |
1054 | return Qnil; |
1055 | else | |
1056 | return Qt; | |
1057 | } | |
1058 | ||
52a1b894 | 1059 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1060 | Fset_process_inherit_coding_system_flag, |
1061 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1062 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1063 | If the second argument FLAG is non-nil, then the variable | |
1064 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1065 | will be bound to the value of the coding system used to decode | |
1066 | the process output. | |
1067 | ||
1068 | This is useful when the coding system specified for the process buffer | |
1069 | leaves either the character code conversion or the end-of-line conversion | |
1070 | unspecified, or if the coding system used to decode the process output | |
1071 | is more appropriate for saving the process buffer. | |
1072 | ||
1073 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1074 | starting the process is an alternative way of setting the inherit flag | |
1075 | for the process which will run. */) | |
1076 | (process, flag) | |
52a1b894 EZ |
1077 | register Lisp_Object process, flag; |
1078 | { | |
b7826503 | 1079 | CHECK_PROCESS (process); |
aa91317a | 1080 | XPROCESS (process)->inherit_coding_system_flag = flag; |
52a1b894 EZ |
1081 | return flag; |
1082 | } | |
1083 | ||
1084 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1085 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1086 | 1, 1, 0, | |
1087 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1088 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1089 | associated with PROCESS will inherit the coding system used to decode | |
1090 | the process output. */) | |
1091 | (process) | |
52a1b894 EZ |
1092 | register Lisp_Object process; |
1093 | { | |
b7826503 | 1094 | CHECK_PROCESS (process); |
aa91317a | 1095 | return XPROCESS (process)->inherit_coding_system_flag; |
52a1b894 EZ |
1096 | } |
1097 | ||
e690ca94 KS |
1098 | DEFUN ("set-process-query-on-exit-flag", |
1099 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1100 | 2, 2, 0, | |
1101 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1102 | If the second argument FLAG is non-nil, Emacs will query the user before |
e690ca94 KS |
1103 | exiting if PROCESS is running. */) |
1104 | (process, flag) | |
1105 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1106 | { |
b7826503 | 1107 | CHECK_PROCESS (process); |
e690ca94 KS |
1108 | XPROCESS (process)->kill_without_query = Fnull (flag); |
1109 | return flag; | |
d0d6b7c5 | 1110 | } |
312c9964 | 1111 | |
e690ca94 KS |
1112 | DEFUN ("process-query-on-exit-flag", |
1113 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1114 | 1, 1, 0, |
f3d9532b | 1115 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
fdb82f93 | 1116 | (process) |
de282a05 RS |
1117 | register Lisp_Object process; |
1118 | { | |
b7826503 | 1119 | CHECK_PROCESS (process); |
e690ca94 KS |
1120 | return Fnull (XPROCESS (process)->kill_without_query); |
1121 | } | |
1122 | ||
1123 | #ifdef DATAGRAM_SOCKETS | |
1124 | Lisp_Object Fprocess_datagram_address (); | |
1125 | #endif | |
1126 | ||
1127 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1128 | 1, 2, 0, | |
1129 | doc: /* Return the contact info of PROCESS; t for a real child. | |
1130 | For a net connection, the value depends on the optional KEY arg. | |
1131 | If KEY is nil, value is a cons cell of the form (HOST SERVICE), | |
1132 | if KEY is t, the complete contact information for the connection is | |
1133 | returned, else the specific value for the keyword KEY is returned. | |
1134 | See `make-network-process' for a list of keywords. */) | |
1135 | (process, key) | |
1136 | register Lisp_Object process, key; | |
1137 | { | |
1138 | Lisp_Object contact; | |
1139 | ||
1140 | CHECK_PROCESS (process); | |
1141 | contact = XPROCESS (process)->childp; | |
1142 | ||
1143 | #ifdef DATAGRAM_SOCKETS | |
1144 | if (DATAGRAM_CONN_P (process) | |
1145 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1146 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1147 | Fprocess_datagram_address (process)); |
1148 | #endif | |
1149 | ||
1150 | if (!NETCONN_P (process) || EQ (key, Qt)) | |
1151 | return contact; | |
1152 | if (NILP (key)) | |
1153 | return Fcons (Fplist_get (contact, QChost), | |
1154 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
1155 | return Fplist_get (contact, key); | |
de282a05 RS |
1156 | } |
1157 | ||
faa7db08 KS |
1158 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1159 | 1, 1, 0, | |
1160 | doc: /* Return the plist of PROCESS. */) | |
1161 | (process) | |
1162 | register Lisp_Object process; | |
365aee82 | 1163 | { |
ac4a7584 | 1164 | CHECK_PROCESS (process); |
faa7db08 | 1165 | return XPROCESS (process)->plist; |
ac4a7584 | 1166 | } |
365aee82 | 1167 | |
faa7db08 KS |
1168 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1169 | 2, 2, 0, | |
26a086c6 | 1170 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1171 | (process, plist) |
1172 | register Lisp_Object process, plist; | |
ac4a7584 | 1173 | { |
365aee82 | 1174 | CHECK_PROCESS (process); |
faa7db08 | 1175 | CHECK_LIST (plist); |
365aee82 | 1176 | |
faa7db08 | 1177 | XPROCESS (process)->plist = plist; |
26a086c6 | 1178 | return plist; |
365aee82 KS |
1179 | } |
1180 | ||
312c9964 RS |
1181 | #if 0 /* Turned off because we don't currently record this info |
1182 | in the process. Perhaps add it. */ | |
1183 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1184 | doc: /* Return the connection type of PROCESS. |
1185 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1186 | a socket connection. */) | |
1187 | (process) | |
312c9964 RS |
1188 | Lisp_Object process; |
1189 | { | |
1190 | return XPROCESS (process)->type; | |
1191 | } | |
1192 | #endif | |
991234f0 KS |
1193 | |
1194 | #ifdef HAVE_SOCKETS | |
1195 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1196 | 1, 2, 0, |
991234f0 | 1197 | doc: /* Convert network ADDRESS from internal format to a string. |
0dccee41 KS |
1198 | If optional second argument OMIT-PORT is non-nil, don't include a port |
1199 | number in the string; in this case, interpret a 4 element vector as an | |
1200 | IP address. Returns nil if format of ADDRESS is invalid. */) | |
1201 | (address, omit_port) | |
1202 | Lisp_Object address, omit_port; | |
991234f0 | 1203 | { |
991234f0 KS |
1204 | if (NILP (address)) |
1205 | return Qnil; | |
1206 | ||
1207 | if (STRINGP (address)) /* AF_LOCAL */ | |
1208 | return address; | |
1209 | ||
1210 | if (VECTORP (address)) /* AF_INET */ | |
1211 | { | |
1212 | register struct Lisp_Vector *p = XVECTOR (address); | |
1213 | Lisp_Object args[6]; | |
0dccee41 | 1214 | int nargs, i; |
991234f0 | 1215 | |
0dccee41 KS |
1216 | if (!NILP (omit_port) && (p->size == 4 || p->size == 5)) |
1217 | { | |
1218 | args[0] = build_string ("%d.%d.%d.%d"); | |
1219 | nargs = 4; | |
1220 | } | |
1221 | else if (p->size == 5) | |
1222 | { | |
1223 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1224 | nargs = 5; | |
1225 | } | |
1226 | else | |
991234f0 KS |
1227 | return Qnil; |
1228 | ||
0dccee41 KS |
1229 | for (i = 0; i < nargs; i++) |
1230 | args[i+1] = p->contents[i]; | |
1231 | return Fformat (nargs+1, args); | |
991234f0 KS |
1232 | } |
1233 | ||
1234 | if (CONSP (address)) | |
1235 | { | |
1236 | Lisp_Object args[2]; | |
1237 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1238 | args[1] = Fcar (address); |
991234f0 | 1239 | return Fformat (2, args); |
177c0ea7 | 1240 | |
991234f0 KS |
1241 | } |
1242 | ||
1243 | return Qnil; | |
1244 | } | |
1245 | #endif | |
d0d6b7c5 | 1246 | \f |
ff6daed3 | 1247 | static Lisp_Object |
e690ca94 KS |
1248 | list_processes_1 (query_only) |
1249 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1250 | { |
1251 | register Lisp_Object tail, tem; | |
1252 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1253 | register struct Lisp_Process *p; |
e690ca94 KS |
1254 | char tembuf[300]; |
1255 | int w_proc, w_buffer, w_tty; | |
1256 | Lisp_Object i_status, i_buffer, i_tty, i_command; | |
1257 | ||
1258 | w_proc = 4; /* Proc */ | |
1259 | w_buffer = 6; /* Buffer */ | |
1260 | w_tty = 0; /* Omit if no ttys */ | |
1261 | ||
1262 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1263 | { | |
1264 | int i; | |
1265 | ||
1266 | proc = Fcdr (Fcar (tail)); | |
1267 | p = XPROCESS (proc); | |
1268 | if (NILP (p->childp)) | |
1269 | continue; | |
1270 | if (!NILP (query_only) && !NILP (p->kill_without_query)) | |
1271 | continue; | |
1272 | if (STRINGP (p->name) | |
d5db4077 | 1273 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1274 | w_proc = i; |
1275 | if (!NILP (p->buffer)) | |
1276 | { | |
1277 | if (NILP (XBUFFER (p->buffer)->name) && w_buffer < 8) | |
1278 | w_buffer = 8; /* (Killed) */ | |
d5db4077 | 1279 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1280 | w_buffer = i; |
1281 | } | |
1282 | if (STRINGP (p->tty_name) | |
d5db4077 | 1283 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1284 | w_tty = i; |
1285 | } | |
1286 | ||
1287 | XSETFASTINT (i_status, w_proc + 1); | |
1288 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1289 | if (w_tty) | |
1290 | { | |
1291 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
1292 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_tty + 1); | |
1293 | } else { | |
1294 | i_tty = Qnil; | |
1295 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1296 | } | |
d0d6b7c5 | 1297 | |
22719df2 | 1298 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1299 | |
1300 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1301 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1302 | |
1303 | current_buffer->truncate_lines = Qt; | |
1304 | ||
e690ca94 KS |
1305 | write_string ("Proc", -1); |
1306 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1307 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1308 | if (!NILP (i_tty)) | |
1309 | { | |
1310 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1311 | } | |
1312 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1313 | write_string ("\n", -1); | |
1314 | ||
1315 | write_string ("----", -1); | |
1316 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1317 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1318 | if (!NILP (i_tty)) | |
1319 | { | |
1320 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1321 | } | |
1322 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1323 | write_string ("\n", -1); | |
d0d6b7c5 JB |
1324 | |
1325 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1326 | { | |
1327 | Lisp_Object symbol; | |
1328 | ||
1329 | proc = Fcdr (Fcar (tail)); | |
1330 | p = XPROCESS (proc); | |
1331 | if (NILP (p->childp)) | |
1332 | continue; | |
e690ca94 KS |
1333 | if (!NILP (query_only) && !NILP (p->kill_without_query)) |
1334 | continue; | |
d0d6b7c5 JB |
1335 | |
1336 | Finsert (1, &p->name); | |
e690ca94 | 1337 | Findent_to (i_status, minspace); |
d0d6b7c5 JB |
1338 | |
1339 | if (!NILP (p->raw_status_low)) | |
1340 | update_status (p); | |
1341 | symbol = p->status; | |
bcd69aea | 1342 | if (CONSP (p->status)) |
70949dac | 1343 | symbol = XCAR (p->status); |
d0d6b7c5 | 1344 | |
177c0ea7 | 1345 | |
d0d6b7c5 JB |
1346 | if (EQ (symbol, Qsignal)) |
1347 | { | |
1348 | Lisp_Object tem; | |
1349 | tem = Fcar (Fcdr (p->status)); | |
1350 | #ifdef VMS | |
1351 | if (XINT (tem) < NSIG) | |
b0310da4 | 1352 | write_string (sys_errlist [XINT (tem)], -1); |
d0d6b7c5 JB |
1353 | else |
1354 | #endif | |
1355 | Fprinc (symbol, Qnil); | |
1356 | } | |
e690ca94 | 1357 | else if (NETCONN1_P (p)) |
d0d6b7c5 | 1358 | { |
e690ca94 | 1359 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1360 | write_string ("closed", -1); |
e690ca94 KS |
1361 | else if (EQ (p->command, Qt)) |
1362 | write_string ("stopped", -1); | |
1363 | else if (EQ (symbol, Qrun)) | |
1364 | write_string ("open", -1); | |
d0d6b7c5 JB |
1365 | else |
1366 | Fprinc (symbol, Qnil); | |
1367 | } | |
1368 | else | |
1369 | Fprinc (symbol, Qnil); | |
1370 | ||
1371 | if (EQ (symbol, Qexit)) | |
1372 | { | |
1373 | Lisp_Object tem; | |
1374 | tem = Fcar (Fcdr (p->status)); | |
1375 | if (XFASTINT (tem)) | |
1376 | { | |
3162bafa | 1377 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1378 | write_string (tembuf, -1); |
1379 | } | |
1380 | } | |
1381 | ||
1382 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
1383 | remove_process (proc); | |
1384 | ||
e690ca94 | 1385 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1386 | if (NILP (p->buffer)) |
1387 | insert_string ("(none)"); | |
1388 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1389 | insert_string ("(Killed)"); | |
1390 | else | |
1391 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1392 | ||
e690ca94 KS |
1393 | if (!NILP (i_tty)) |
1394 | { | |
1395 | Findent_to (i_tty, minspace); | |
1396 | if (STRINGP (p->tty_name)) | |
1397 | Finsert (1, &p->tty_name); | |
1398 | } | |
a9fde32e | 1399 | |
e690ca94 | 1400 | Findent_to (i_command, minspace); |
a9fde32e | 1401 | |
e690ca94 KS |
1402 | if (EQ (p->status, Qlisten)) |
1403 | { | |
1404 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1405 | if (INTEGERP (port)) | |
1406 | port = Fnumber_to_string (port); | |
991234f0 | 1407 | if (NILP (port)) |
0dccee41 | 1408 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1409 | sprintf (tembuf, "(network %s server on %s)\n", |
bed9664a | 1410 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1411 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1412 | insert_string (tembuf); |
1413 | } | |
1414 | else if (NETCONN1_P (p)) | |
d0d6b7c5 | 1415 | { |
e690ca94 KS |
1416 | /* For a local socket, there is no host name, |
1417 | so display service instead. */ | |
1418 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1419 | if (!STRINGP (host)) | |
1420 | { | |
1421 | host = Fplist_get (p->childp, QCservice); | |
1422 | if (INTEGERP (host)) | |
1423 | host = Fnumber_to_string (host); | |
1424 | } | |
991234f0 | 1425 | if (NILP (host)) |
0dccee41 | 1426 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1427 | sprintf (tembuf, "(network %s connection to %s)\n", |
bed9664a | 1428 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1429 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 JB |
1430 | insert_string (tembuf); |
1431 | } | |
177c0ea7 | 1432 | else |
d0d6b7c5 JB |
1433 | { |
1434 | tem = p->command; | |
1435 | while (1) | |
1436 | { | |
1437 | tem1 = Fcar (tem); | |
1438 | Finsert (1, &tem1); | |
1439 | tem = Fcdr (tem); | |
1440 | if (NILP (tem)) | |
1441 | break; | |
1442 | insert_string (" "); | |
1443 | } | |
1444 | insert_string ("\n"); | |
1445 | } | |
1446 | } | |
1447 | return Qnil; | |
1448 | } | |
1449 | ||
e690ca94 | 1450 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1451 | doc: /* Display a list of all processes. |
e690ca94 KS |
1452 | If optional argument QUERY-ONLY is non-nil, only processes with |
1453 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1454 | Any process listed as exited or signaled is actually eliminated |
1455 | after the listing is made. */) | |
e690ca94 KS |
1456 | (query_only) |
1457 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1458 | { |
1459 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1460 | list_processes_1, query_only); |
d0d6b7c5 JB |
1461 | return Qnil; |
1462 | } | |
1463 | ||
1464 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1465 | doc: /* Return a list of all processes. */) |
1466 | () | |
d0d6b7c5 JB |
1467 | { |
1468 | return Fmapcar (Qcdr, Vprocess_alist); | |
1469 | } | |
1470 | \f | |
b0310da4 JB |
1471 | /* Starting asynchronous inferior processes. */ |
1472 | ||
1473 | static Lisp_Object start_process_unwind (); | |
1474 | ||
d0d6b7c5 | 1475 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1476 | doc: /* Start a program in a subprocess. Return the process object for it. |
1477 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1478 | BUFFER is the buffer (or buffer name) to associate with the process. |
fdb82f93 PJ |
1479 | Process output goes at end of that buffer, unless you specify |
1480 | an output stream or filter function to handle the output. | |
1481 | BUFFER may be also nil, meaning that this process is not associated | |
1482 | with any buffer. | |
553acde5 | 1483 | PROGRAM is the program file name. It is searched for in PATH. |
3ecdf100 | 1484 | Remaining arguments are strings to give program as arguments. |
320aebc9 | 1485 | |
3ecdf100 | 1486 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1487 | (nargs, args) |
d0d6b7c5 JB |
1488 | int nargs; |
1489 | register Lisp_Object *args; | |
1490 | { | |
1e30af70 | 1491 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 JB |
1492 | #ifdef VMS |
1493 | register unsigned char *new_argv; | |
1494 | int len; | |
1495 | #else | |
1496 | register unsigned char **new_argv; | |
1497 | #endif | |
1498 | register int i; | |
aed13378 | 1499 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1500 | |
1501 | buffer = args[1]; | |
1502 | if (!NILP (buffer)) | |
1503 | buffer = Fget_buffer_create (buffer); | |
1504 | ||
1e30af70 JB |
1505 | /* Make sure that the child will be able to chdir to the current |
1506 | buffer's current directory, or its unhandled equivalent. We | |
1507 | can't just have the child check for an error when it does the | |
1508 | chdir, since it's in a vfork. | |
1509 | ||
1510 | We have to GCPRO around this because Fexpand_file_name and | |
1511 | Funhandled_file_name_directory might call a file name handling | |
1512 | function. The argument list is protected by the caller, so all | |
1513 | we really have to worry about is buffer. */ | |
1514 | { | |
1515 | struct gcpro gcpro1, gcpro2; | |
1516 | ||
1517 | current_dir = current_buffer->directory; | |
1518 | ||
1519 | GCPRO2 (buffer, current_dir); | |
1520 | ||
177c0ea7 | 1521 | current_dir |
7af71e17 RS |
1522 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), |
1523 | Qnil); | |
1e30af70 JB |
1524 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1525 | report_file_error ("Setting current directory", | |
1526 | Fcons (current_buffer->directory, Qnil)); | |
1527 | ||
1528 | UNGCPRO; | |
1529 | } | |
1530 | ||
d0d6b7c5 | 1531 | name = args[0]; |
b7826503 | 1532 | CHECK_STRING (name); |
d0d6b7c5 JB |
1533 | |
1534 | program = args[2]; | |
1535 | ||
b7826503 | 1536 | CHECK_STRING (program); |
d0d6b7c5 | 1537 | |
d0d6b7c5 | 1538 | proc = make_process (name); |
b0310da4 JB |
1539 | /* If an error occurs and we can't start the process, we want to |
1540 | remove it from the process list. This means that each error | |
1541 | check in create_process doesn't need to call remove_process | |
1542 | itself; it's all taken care of here. */ | |
1543 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1544 | |
1545 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1546 | XPROCESS (proc)->plist = Qnil; |
d0d6b7c5 JB |
1547 | XPROCESS (proc)->buffer = buffer; |
1548 | XPROCESS (proc)->sentinel = Qnil; | |
1549 | XPROCESS (proc)->filter = Qnil; | |
03f04413 KH |
1550 | XPROCESS (proc)->filter_multibyte |
1551 | = buffer_defaults.enable_multibyte_characters; | |
d0d6b7c5 JB |
1552 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); |
1553 | ||
2d942bfa KS |
1554 | #ifdef ADAPTIVE_READ_BUFFERING |
1555 | XPROCESS (proc)->adaptive_read_buffering = Vprocess_adaptive_read_buffering; | |
1556 | #endif | |
1557 | ||
7af71e17 RS |
1558 | /* Make the process marker point into the process buffer (if any). */ |
1559 | if (!NILP (buffer)) | |
d8a2934e RS |
1560 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1561 | BUF_ZV (XBUFFER (buffer)), | |
1562 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1563 | |
67918941 | 1564 | { |
d5d4ae71 KH |
1565 | /* Decide coding systems for communicating with the process. Here |
1566 | we don't setup the structure coding_system nor pay attention to | |
1567 | unibyte mode. They are done in create_process. */ | |
1568 | ||
67918941 RS |
1569 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1570 | Lisp_Object coding_systems = Qt; | |
1571 | Lisp_Object val, *args2; | |
a4a37e65 | 1572 | struct gcpro gcpro1, gcpro2; |
67918941 | 1573 | |
d5d4ae71 KH |
1574 | val = Vcoding_system_for_read; |
1575 | if (NILP (val)) | |
67918941 RS |
1576 | { |
1577 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1578 | args2[0] = Qstart_process; | |
1579 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1580 | GCPRO2 (proc, current_dir); |
67918941 RS |
1581 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1582 | UNGCPRO; | |
1583 | if (CONSP (coding_systems)) | |
70949dac | 1584 | val = XCAR (coding_systems); |
67918941 | 1585 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1586 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1587 | } |
1588 | XPROCESS (proc)->decode_coding_system = val; | |
1589 | ||
d5d4ae71 KH |
1590 | val = Vcoding_system_for_write; |
1591 | if (NILP (val)) | |
67918941 RS |
1592 | { |
1593 | if (EQ (coding_systems, Qt)) | |
1594 | { | |
1595 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1596 | args2[0] = Qstart_process; | |
1597 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1598 | GCPRO2 (proc, current_dir); |
67918941 RS |
1599 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1600 | UNGCPRO; | |
1601 | } | |
1602 | if (CONSP (coding_systems)) | |
70949dac | 1603 | val = XCDR (coding_systems); |
67918941 | 1604 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1605 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1606 | } |
1607 | XPROCESS (proc)->encode_coding_system = val; | |
1608 | } | |
0fa1789e | 1609 | |
a4a37e65 KH |
1610 | #ifdef VMS |
1611 | /* Make a one member argv with all args concatenated | |
1612 | together separated by a blank. */ | |
d5db4077 | 1613 | len = SBYTES (program) + 2; |
a4a37e65 KH |
1614 | for (i = 3; i < nargs; i++) |
1615 | { | |
1616 | tem = args[i]; | |
b7826503 | 1617 | CHECK_STRING (tem); |
d5db4077 | 1618 | len += SBYTES (tem) + 1; /* count the blank */ |
a4a37e65 KH |
1619 | } |
1620 | new_argv = (unsigned char *) alloca (len); | |
d5db4077 | 1621 | strcpy (new_argv, SDATA (program)); |
a4a37e65 KH |
1622 | for (i = 3; i < nargs; i++) |
1623 | { | |
1624 | tem = args[i]; | |
b7826503 | 1625 | CHECK_STRING (tem); |
a4a37e65 | 1626 | strcat (new_argv, " "); |
d5db4077 | 1627 | strcat (new_argv, SDATA (tem)); |
a4a37e65 KH |
1628 | } |
1629 | /* Need to add code here to check for program existence on VMS */ | |
177c0ea7 | 1630 | |
a4a37e65 KH |
1631 | #else /* not VMS */ |
1632 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1633 | ||
ed30cf85 RS |
1634 | /* If program file name is not absolute, search our path for it. |
1635 | Put the name we will really use in TEM. */ | |
d5db4077 KR |
1636 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) |
1637 | && !(SCHARS (program) > 1 | |
1638 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
a4a37e65 KH |
1639 | { |
1640 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1641 | ||
1642 | tem = Qnil; | |
1643 | GCPRO4 (name, program, buffer, current_dir); | |
cc4db0c7 | 1644 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); |
a4a37e65 KH |
1645 | UNGCPRO; |
1646 | if (NILP (tem)) | |
1647 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1648 | tem = Fexpand_file_name (tem, Qnil); | |
a4a37e65 KH |
1649 | } |
1650 | else | |
1651 | { | |
1652 | if (!NILP (Ffile_directory_p (program))) | |
1653 | error ("Specified program for new process is a directory"); | |
ed30cf85 | 1654 | tem = program; |
a4a37e65 KH |
1655 | } |
1656 | ||
ed30cf85 RS |
1657 | /* If program file name starts with /: for quoting a magic name, |
1658 | discard that. */ | |
1659 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1660 | && SREF (tem, 1) == ':') | |
1661 | tem = Fsubstring (tem, make_number (2), Qnil); | |
1662 | ||
1663 | /* Encode the file name and put it in NEW_ARGV. | |
1664 | That's where the child will use it to execute the program. */ | |
1665 | tem = ENCODE_FILE (tem); | |
1666 | new_argv[0] = SDATA (tem); | |
1667 | ||
a4a37e65 KH |
1668 | /* Here we encode arguments by the coding system used for sending |
1669 | data to the process. We don't support using different coding | |
1670 | systems for encoding arguments and for encoding data sent to the | |
1671 | process. */ | |
1672 | ||
1673 | for (i = 3; i < nargs; i++) | |
1674 | { | |
1675 | tem = args[i]; | |
b7826503 | 1676 | CHECK_STRING (tem); |
a4a37e65 KH |
1677 | if (STRING_MULTIBYTE (tem)) |
1678 | tem = (code_convert_string_norecord | |
1679 | (tem, XPROCESS (proc)->encode_coding_system, 1)); | |
d5db4077 | 1680 | new_argv[i - 2] = SDATA (tem); |
a4a37e65 KH |
1681 | } |
1682 | new_argv[i - 2] = 0; | |
1683 | #endif /* not VMS */ | |
1684 | ||
0fa1789e | 1685 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
e7fbaa65 | 1686 | XPROCESS (proc)->decoding_carryover = make_number (0); |
0fa1789e | 1687 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); |
e7fbaa65 | 1688 | XPROCESS (proc)->encoding_carryover = make_number (0); |
0fa1789e | 1689 | |
52a1b894 | 1690 | XPROCESS (proc)->inherit_coding_system_flag |
aa91317a RS |
1691 | = (NILP (buffer) || !inherit_process_coding_system |
1692 | ? Qnil : Qt); | |
52a1b894 | 1693 | |
6b53bb85 | 1694 | create_process (proc, (char **) new_argv, current_dir); |
d0d6b7c5 | 1695 | |
b0310da4 | 1696 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1697 | } |
1698 | ||
b0310da4 | 1699 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1700 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1701 | an error and the process wasn't started successfully, so we should |
1702 | remove it from the process list. */ | |
1703 | static Lisp_Object | |
1704 | start_process_unwind (proc) | |
1705 | Lisp_Object proc; | |
1706 | { | |
bcd69aea | 1707 | if (!PROCESSP (proc)) |
b0310da4 JB |
1708 | abort (); |
1709 | ||
1710 | /* Was PROC started successfully? */ | |
188d6c4e | 1711 | if (XINT (XPROCESS (proc)->pid) <= 0) |
b0310da4 JB |
1712 | remove_process (proc); |
1713 | ||
1714 | return Qnil; | |
1715 | } | |
1716 | ||
ff6daed3 | 1717 | static void |
30904ab7 GM |
1718 | create_process_1 (timer) |
1719 | struct atimer *timer; | |
d0d6b7c5 | 1720 | { |
30904ab7 | 1721 | /* Nothing to do. */ |
d0d6b7c5 JB |
1722 | } |
1723 | ||
30904ab7 | 1724 | |
d0d6b7c5 JB |
1725 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1726 | #ifdef USG | |
1727 | #ifdef SIGCHLD | |
1728 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1729 | ||
1730 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1731 | int sigchld_deferred; | |
1732 | ||
1733 | SIGTYPE | |
1734 | create_process_sigchld () | |
1735 | { | |
1736 | signal (SIGCHLD, create_process_sigchld); | |
1737 | ||
1738 | sigchld_deferred = 1; | |
1739 | } | |
1740 | #endif | |
1741 | #endif | |
1742 | #endif | |
1743 | ||
1744 | #ifndef VMS /* VMS version of this function is in vmsproc.c. */ | |
6b53bb85 | 1745 | void |
1e30af70 | 1746 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1747 | Lisp_Object process; |
1748 | char **new_argv; | |
1e30af70 | 1749 | Lisp_Object current_dir; |
d0d6b7c5 | 1750 | { |
ecd1f654 | 1751 | int pid, inchannel, outchannel; |
d0d6b7c5 | 1752 | int sv[2]; |
0dc70c33 KH |
1753 | #ifdef POSIX_SIGNALS |
1754 | sigset_t procmask; | |
1755 | sigset_t blocked; | |
1756 | struct sigaction sigint_action; | |
1757 | struct sigaction sigquit_action; | |
1758 | #ifdef AIX | |
1759 | struct sigaction sighup_action; | |
1760 | #endif | |
1761 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1762 | #if 0 |
d0d6b7c5 JB |
1763 | #ifdef SIGCHLD |
1764 | SIGTYPE (*sigchld)(); | |
1765 | #endif | |
41d03b9a | 1766 | #endif /* 0 */ |
0dc70c33 | 1767 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1768 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1769 | volatile int forkin, forkout; | |
1770 | volatile int pty_flag = 0; | |
3ec68006 | 1771 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1772 | extern char **environ; |
3ec68006 | 1773 | #endif |
d0d6b7c5 | 1774 | |
d0d6b7c5 JB |
1775 | inchannel = outchannel = -1; |
1776 | ||
1777 | #ifdef HAVE_PTYS | |
fe45da4e | 1778 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1779 | outchannel = inchannel = allocate_pty (); |
1780 | ||
d0d6b7c5 JB |
1781 | if (inchannel >= 0) |
1782 | { | |
2af70a0c RS |
1783 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1784 | /* On most USG systems it does not work to open the pty's tty here, | |
1785 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1786 | #ifdef O_NOCTTY |
1787 | /* Don't let this terminal become our controlling terminal | |
1788 | (in case we don't have one). */ | |
68c45bf0 | 1789 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1790 | #else |
68c45bf0 | 1791 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1792 | #endif |
1793 | if (forkin < 0) | |
1794 | report_file_error ("Opening pty", Qnil); | |
21375f1e YM |
1795 | #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY) |
1796 | /* In the case that vfork is defined as fork, the parent process | |
1797 | (Emacs) may send some data before the child process completes | |
1798 | tty options setup. So we setup tty before forking. */ | |
1799 | child_setup_tty (forkout); | |
1800 | #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */ | |
d0d6b7c5 JB |
1801 | #else |
1802 | forkin = forkout = -1; | |
2af70a0c | 1803 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1804 | pty_flag = 1; |
1805 | } | |
1806 | else | |
1807 | #endif /* HAVE_PTYS */ | |
1808 | #ifdef SKTPAIR | |
1809 | { | |
1810 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv) < 0) | |
1811 | report_file_error ("Opening socketpair", Qnil); | |
1812 | outchannel = inchannel = sv[0]; | |
1813 | forkout = forkin = sv[1]; | |
1814 | } | |
1815 | #else /* not SKTPAIR */ | |
1816 | { | |
fc14013c KH |
1817 | int tem; |
1818 | tem = pipe (sv); | |
1819 | if (tem < 0) | |
1820 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1821 | inchannel = sv[0]; |
1822 | forkout = sv[1]; | |
fc14013c KH |
1823 | tem = pipe (sv); |
1824 | if (tem < 0) | |
1825 | { | |
68c45bf0 PE |
1826 | emacs_close (inchannel); |
1827 | emacs_close (forkout); | |
fc14013c KH |
1828 | report_file_error ("Creating pipe", Qnil); |
1829 | } | |
d0d6b7c5 JB |
1830 | outchannel = sv[1]; |
1831 | forkin = sv[0]; | |
1832 | } | |
1833 | #endif /* not SKTPAIR */ | |
1834 | ||
1835 | #if 0 | |
1836 | /* Replaced by close_process_descs */ | |
1837 | set_exclusive_use (inchannel); | |
1838 | set_exclusive_use (outchannel); | |
1839 | #endif | |
1840 | ||
1841 | /* Stride people say it's a mystery why this is needed | |
1842 | as well as the O_NDELAY, but that it fails without this. */ | |
1843 | #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) | |
1844 | { | |
1845 | int one = 1; | |
1846 | ioctl (inchannel, FIONBIO, &one); | |
1847 | } | |
1848 | #endif | |
1849 | ||
1850 | #ifdef O_NONBLOCK | |
1851 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1852 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1853 | #else |
1854 | #ifdef O_NDELAY | |
1855 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1856 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1857 | #endif |
1858 | #endif | |
1859 | ||
1860 | /* Record this as an active process, with its channels. | |
1861 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1862 | chan_process[inchannel] = process; | |
1d056e64 KH |
1863 | XSETINT (XPROCESS (process)->infd, inchannel); |
1864 | XSETINT (XPROCESS (process)->outfd, outchannel); | |
16782258 JD |
1865 | |
1866 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1867 | It was only used for getting the foreground tty process, so now | |
1868 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1869 | more portable (see USG_SUBTTY_WORKS above). */ | |
1870 | ||
d0d6b7c5 JB |
1871 | XPROCESS (process)->pty_flag = (pty_flag ? Qt : Qnil); |
1872 | XPROCESS (process)->status = Qrun; | |
03f04413 | 1873 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1874 | |
1875 | /* Delay interrupts until we have a chance to store | |
1876 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1877 | #ifdef POSIX_SIGNALS |
1878 | sigemptyset (&blocked); | |
1879 | #ifdef SIGCHLD | |
1880 | sigaddset (&blocked, SIGCHLD); | |
1881 | #endif | |
351e611f | 1882 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1883 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1884 | this sets the parent's signal handlers as well as the child's. | |
1885 | So delay all interrupts whose handlers the child might munge, | |
1886 | and record the current handlers so they can be restored later. */ | |
1887 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1888 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1889 | #ifdef AIX | |
1890 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1891 | #endif | |
351e611f | 1892 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
1893 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
1894 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
1895 | #ifdef SIGCHLD |
1896 | #ifdef BSD4_1 | |
1897 | sighold (SIGCHLD); | |
1898 | #else /* not BSD4_1 */ | |
6df54671 | 1899 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
1900 | sigsetmask (sigmask (SIGCHLD)); |
1901 | #else /* ordinary USG */ | |
1902 | #if 0 | |
1903 | sigchld_deferred = 0; | |
1904 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
1905 | #endif | |
1906 | #endif /* ordinary USG */ | |
1907 | #endif /* not BSD4_1 */ | |
1908 | #endif /* SIGCHLD */ | |
0dc70c33 | 1909 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 1910 | |
3081bf8d | 1911 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1912 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1913 | if (inchannel > max_process_desc) |
1914 | max_process_desc = inchannel; | |
1915 | ||
d0d6b7c5 JB |
1916 | /* Until we store the proper pid, enable sigchld_handler |
1917 | to recognize an unknown pid as standing for this process. | |
1918 | It is very important not to let this `marker' value stay | |
1919 | in the table after this function has returned; if it does | |
1920 | it might cause call-process to hang and subsequent asynchronous | |
1921 | processes to get their return values scrambled. */ | |
1922 | XSETINT (XPROCESS (process)->pid, -1); | |
1923 | ||
ececcbec | 1924 | BLOCK_INPUT; |
177c0ea7 | 1925 | |
d0d6b7c5 JB |
1926 | { |
1927 | /* child_setup must clobber environ on systems with true vfork. | |
1928 | Protect it from permanent change. */ | |
1929 | char **save_environ = environ; | |
1930 | ||
14dc6093 | 1931 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1932 | |
e98d950b | 1933 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1934 | pid = vfork (); |
1935 | if (pid == 0) | |
e98d950b | 1936 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1937 | { |
1938 | int xforkin = forkin; | |
1939 | int xforkout = forkout; | |
1940 | ||
1941 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1942 | but fails to handle all the cases. */ | |
1943 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1944 | sigsetmask (SIGEMPTYMASK); | |
1945 | #endif | |
1946 | ||
1947 | /* Make the pty be the controlling terminal of the process. */ | |
1948 | #ifdef HAVE_PTYS | |
1949 | /* First, disconnect its current controlling terminal. */ | |
1950 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1951 | /* We tried doing setsid only if pty_flag, but it caused |
1952 | process_set_signal to fail on SGI when using a pipe. */ | |
1953 | setsid (); | |
ce4c9c90 | 1954 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 1955 | if (pty_flag) |
39e9ebcd | 1956 | { |
39e9ebcd RS |
1957 | #ifdef TIOCSCTTY |
1958 | /* We ignore the return value | |
1959 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1960 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1961 | #endif |
39e9ebcd | 1962 | } |
d0d6b7c5 | 1963 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1964 | #ifdef USG |
000ab717 | 1965 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1966 | afterwards. Otherwise, we lose our controlling tty which |
1967 | is set when we open the pty. */ | |
1968 | setpgrp (); | |
1969 | #endif /* USG */ | |
1970 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
1971 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
1972 | if (pty_flag && xforkin >= 0) | |
1973 | { | |
1974 | struct termios t; | |
1975 | tcgetattr (xforkin, &t); | |
1976 | t.c_lflag = LDISC1; | |
1977 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1978 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1979 | } |
1980 | #else | |
aafadd9f | 1981 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1982 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1983 | { |
1984 | /* Use new line discipline. */ | |
1985 | int ldisc = NTTYDISC; | |
4458f555 | 1986 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1987 | } |
000ab717 | 1988 | #endif |
9bcf8ec6 | 1989 | #endif |
177c0ea7 | 1990 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1991 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1992 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1993 | if (pty_flag) | |
1994 | { | |
177c0ea7 | 1995 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1996 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1997 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 1998 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 1999 | emacs_close (j); |
5a570e37 | 2000 | #ifndef USG |
d0d6b7c5 JB |
2001 | /* In order to get a controlling terminal on some versions |
2002 | of BSD, it is necessary to put the process in pgrp 0 | |
2003 | before it opens the terminal. */ | |
99c1aeca | 2004 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
2005 | setpgid (0, 0); |
2006 | #else | |
d0d6b7c5 | 2007 | setpgrp (0, 0); |
3ea1d291 | 2008 | #endif |
d0d6b7c5 JB |
2009 | #endif |
2010 | } | |
2011 | #endif /* TIOCNOTTY */ | |
2012 | ||
99153b9e | 2013 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 2014 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
2015 | conditional on TIOCSPGRP, |
2016 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
2017 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
2018 | that system does seem to need this code, even though | |
2019 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
2020 | /* Now close the pty (if we had it open) and reopen it. |
2021 | This makes the pty the controlling terminal of the subprocess. */ | |
2022 | if (pty_flag) | |
2023 | { | |
99e3d726 RS |
2024 | #ifdef SET_CHILD_PTY_PGRP |
2025 | int pgrp = getpid (); | |
2026 | #endif | |
2027 | ||
68c45bf0 PE |
2028 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2029 | would work? */ | |
d0d6b7c5 | 2030 | if (xforkin >= 0) |
68c45bf0 PE |
2031 | emacs_close (xforkin); |
2032 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2033 | |
4aa54ba8 RS |
2034 | if (xforkin < 0) |
2035 | { | |
68c45bf0 PE |
2036 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2037 | emacs_write (1, pty_name, strlen (pty_name)); | |
2038 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2039 | _exit (1); |
2040 | } | |
2041 | ||
99e3d726 RS |
2042 | #ifdef SET_CHILD_PTY_PGRP |
2043 | ioctl (xforkin, TIOCSPGRP, &pgrp); | |
2044 | ioctl (xforkout, TIOCSPGRP, &pgrp); | |
2045 | #endif | |
d0d6b7c5 | 2046 | } |
99153b9e | 2047 | #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */ |
e9bf058b | 2048 | |
d0d6b7c5 | 2049 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2050 | if (pty_flag) |
2051 | { | |
2052 | SETUP_SLAVE_PTY; | |
2053 | } | |
d0d6b7c5 JB |
2054 | #endif /* SETUP_SLAVE_PTY */ |
2055 | #ifdef AIX | |
2056 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2057 | Now reenable it in the child, so it will die when we want it to. */ | |
2058 | if (pty_flag) | |
2059 | signal (SIGHUP, SIG_DFL); | |
2060 | #endif | |
2061 | #endif /* HAVE_PTYS */ | |
2062 | ||
0dc70c33 KH |
2063 | signal (SIGINT, SIG_DFL); |
2064 | signal (SIGQUIT, SIG_DFL); | |
2065 | ||
2066 | /* Stop blocking signals in the child. */ | |
2067 | #ifdef POSIX_SIGNALS | |
2068 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2069 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2070 | #ifdef SIGCHLD |
2071 | #ifdef BSD4_1 | |
2072 | sigrelse (SIGCHLD); | |
2073 | #else /* not BSD4_1 */ | |
6df54671 | 2074 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2075 | sigsetmask (SIGEMPTYMASK); |
2076 | #else /* ordinary USG */ | |
63528b78 | 2077 | #if 0 |
d0d6b7c5 | 2078 | signal (SIGCHLD, sigchld); |
63528b78 | 2079 | #endif |
d0d6b7c5 JB |
2080 | #endif /* ordinary USG */ |
2081 | #endif /* not BSD4_1 */ | |
2082 | #endif /* SIGCHLD */ | |
0dc70c33 | 2083 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2084 | |
21375f1e | 2085 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
ab01d0a8 RS |
2086 | if (pty_flag) |
2087 | child_setup_tty (xforkout); | |
21375f1e | 2088 | #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */ |
e98d950b RS |
2089 | #ifdef WINDOWSNT |
2090 | pid = child_setup (xforkin, xforkout, xforkout, | |
2091 | new_argv, 1, current_dir); | |
177c0ea7 | 2092 | #else /* not WINDOWSNT */ |
d0d6b7c5 | 2093 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2094 | new_argv, 1, current_dir); |
e98d950b | 2095 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2096 | } |
2097 | environ = save_environ; | |
2098 | } | |
2099 | ||
ececcbec RS |
2100 | UNBLOCK_INPUT; |
2101 | ||
4a127b3b | 2102 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2103 | if (pid < 0) |
6311cf58 RS |
2104 | { |
2105 | if (forkin >= 0) | |
68c45bf0 | 2106 | emacs_close (forkin); |
6311cf58 | 2107 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2108 | emacs_close (forkout); |
6311cf58 | 2109 | } |
4a127b3b KH |
2110 | else |
2111 | { | |
2112 | /* vfork succeeded. */ | |
2113 | XSETFASTINT (XPROCESS (process)->pid, pid); | |
d0d6b7c5 | 2114 | |
e98d950b | 2115 | #ifdef WINDOWSNT |
4a127b3b | 2116 | register_child (pid, inchannel); |
e98d950b RS |
2117 | #endif /* WINDOWSNT */ |
2118 | ||
4a127b3b KH |
2119 | /* If the subfork execv fails, and it exits, |
2120 | this close hangs. I don't know why. | |
2121 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2122 | { |
2123 | struct atimer *timer; | |
2124 | EMACS_TIME offset; | |
177c0ea7 | 2125 | |
30904ab7 GM |
2126 | stop_polling (); |
2127 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2128 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2129 | |
30904ab7 GM |
2130 | if (forkin >= 0) |
2131 | emacs_close (forkin); | |
2132 | ||
2133 | cancel_atimer (timer); | |
2134 | start_polling (); | |
2135 | } | |
177c0ea7 | 2136 | |
4a127b3b | 2137 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2138 | emacs_close (forkout); |
d0d6b7c5 | 2139 | |
875e6b94 | 2140 | #ifdef HAVE_PTYS |
4a127b3b KH |
2141 | if (pty_flag) |
2142 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2143 | else | |
875e6b94 | 2144 | #endif |
4a127b3b KH |
2145 | XPROCESS (process)->tty_name = Qnil; |
2146 | } | |
3b9a3dfa | 2147 | |
4a127b3b KH |
2148 | /* Restore the signal state whether vfork succeeded or not. |
2149 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2150 | #ifdef POSIX_SIGNALS |
351e611f | 2151 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2152 | /* Restore the parent's signal handlers. */ |
2153 | sigaction (SIGINT, &sigint_action, 0); | |
2154 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2155 | #ifdef AIX | |
2156 | sigaction (SIGHUP, &sighup_action, 0); | |
2157 | #endif | |
351e611f | 2158 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2159 | /* Stop blocking signals in the parent. */ |
2160 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2161 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2162 | #ifdef SIGCHLD |
2163 | #ifdef BSD4_1 | |
2164 | sigrelse (SIGCHLD); | |
2165 | #else /* not BSD4_1 */ | |
6df54671 | 2166 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2167 | sigsetmask (SIGEMPTYMASK); |
2168 | #else /* ordinary USG */ | |
2169 | #if 0 | |
2170 | signal (SIGCHLD, sigchld); | |
2171 | /* Now really handle any of these signals | |
2172 | that came in during this function. */ | |
2173 | if (sigchld_deferred) | |
2174 | kill (getpid (), SIGCHLD); | |
2175 | #endif | |
2176 | #endif /* ordinary USG */ | |
2177 | #endif /* not BSD4_1 */ | |
2178 | #endif /* SIGCHLD */ | |
0dc70c33 | 2179 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2180 | |
2181 | /* Now generate the error if vfork failed. */ | |
2182 | if (pid < 0) | |
2183 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 JB |
2184 | } |
2185 | #endif /* not VMS */ | |
2186 | ||
e690ca94 | 2187 | \f |
d0d6b7c5 JB |
2188 | #ifdef HAVE_SOCKETS |
2189 | ||
e690ca94 KS |
2190 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2191 | The address family of sa is not included in the result. */ | |
2192 | ||
2193 | static Lisp_Object | |
2194 | conv_sockaddr_to_lisp (sa, len) | |
2195 | struct sockaddr *sa; | |
2196 | int len; | |
2197 | { | |
2198 | Lisp_Object address; | |
2199 | int i; | |
2200 | unsigned char *cp; | |
2201 | register struct Lisp_Vector *p; | |
2202 | ||
2203 | switch (sa->sa_family) | |
2204 | { | |
2205 | case AF_INET: | |
2206 | { | |
2207 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2208 | len = sizeof (sin->sin_addr) + 1; | |
2209 | address = Fmake_vector (make_number (len), Qnil); | |
2210 | p = XVECTOR (address); | |
2211 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
2212 | cp = (unsigned char *)&sin->sin_addr; | |
2213 | break; | |
2214 | } | |
2215 | #ifdef HAVE_LOCAL_SOCKETS | |
2216 | case AF_LOCAL: | |
2217 | { | |
fb23673a EZ |
2218 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2219 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2220 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2221 | break; |
fb23673a | 2222 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2223 | } |
2224 | #endif | |
2225 | default: | |
2226 | len -= sizeof (sa->sa_family); | |
2227 | address = Fcons (make_number (sa->sa_family), | |
2228 | Fmake_vector (make_number (len), Qnil)); | |
2229 | p = XVECTOR (XCDR (address)); | |
2230 | cp = (unsigned char *) sa + sizeof (sa->sa_family); | |
2231 | break; | |
2232 | } | |
2233 | ||
2234 | i = 0; | |
2235 | while (i < len) | |
2236 | p->contents[i++] = make_number (*cp++); | |
2237 | ||
2238 | return address; | |
2239 | } | |
2240 | ||
2241 | ||
2242 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2243 | ||
2244 | static int | |
2245 | get_lisp_to_sockaddr_size (address, familyp) | |
2246 | Lisp_Object address; | |
2247 | int *familyp; | |
2248 | { | |
2249 | register struct Lisp_Vector *p; | |
2250 | ||
2251 | if (VECTORP (address)) | |
2252 | { | |
2253 | p = XVECTOR (address); | |
2254 | if (p->size == 5) | |
2255 | { | |
2256 | *familyp = AF_INET; | |
2257 | return sizeof (struct sockaddr_in); | |
2258 | } | |
2259 | } | |
2260 | #ifdef HAVE_LOCAL_SOCKETS | |
2261 | else if (STRINGP (address)) | |
2262 | { | |
2263 | *familyp = AF_LOCAL; | |
2264 | return sizeof (struct sockaddr_un); | |
2265 | } | |
2266 | #endif | |
2267 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2268 | { | |
2269 | struct sockaddr *sa; | |
2270 | *familyp = XINT (XCAR (address)); | |
2271 | p = XVECTOR (XCDR (address)); | |
2272 | return p->size + sizeof (sa->sa_family); | |
2273 | } | |
2274 | return 0; | |
2275 | } | |
2276 | ||
2277 | /* Convert an address object (vector or string) to an internal sockaddr. | |
2278 | Format of address has already been validated by size_lisp_to_sockaddr. */ | |
2279 | ||
2280 | static void | |
2281 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2282 | int family; | |
2283 | Lisp_Object address; | |
2284 | struct sockaddr *sa; | |
2285 | int len; | |
2286 | { | |
2287 | register struct Lisp_Vector *p; | |
34967d0f | 2288 | register unsigned char *cp = NULL; |
e690ca94 KS |
2289 | register int i; |
2290 | ||
2291 | bzero (sa, len); | |
2292 | sa->sa_family = family; | |
2293 | ||
2294 | if (VECTORP (address)) | |
2295 | { | |
2296 | p = XVECTOR (address); | |
2297 | if (family == AF_INET) | |
2298 | { | |
2299 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2300 | len = sizeof (sin->sin_addr) + 1; | |
2301 | i = XINT (p->contents[--len]); | |
2302 | sin->sin_port = htons (i); | |
2303 | cp = (unsigned char *)&sin->sin_addr; | |
2304 | } | |
2305 | } | |
2306 | else if (STRINGP (address)) | |
2307 | { | |
2308 | #ifdef HAVE_LOCAL_SOCKETS | |
2309 | if (family == AF_LOCAL) | |
2310 | { | |
fb23673a | 2311 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2312 | cp = SDATA (address); |
fb23673a EZ |
2313 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2314 | sockun->sun_path[i] = *cp++; | |
e690ca94 KS |
2315 | } |
2316 | #endif | |
2317 | return; | |
2318 | } | |
2319 | else | |
2320 | { | |
2321 | p = XVECTOR (XCDR (address)); | |
2322 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2323 | } | |
2324 | ||
2325 | for (i = 0; i < len; i++) | |
2326 | if (INTEGERP (p->contents[i])) | |
2327 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2328 | } | |
2329 | ||
2330 | #ifdef DATAGRAM_SOCKETS | |
2331 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2332 | 1, 1, 0, | |
2333 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2334 | (process) | |
2335 | Lisp_Object process; | |
2336 | { | |
2337 | int channel; | |
2338 | ||
2339 | CHECK_PROCESS (process); | |
2340 | ||
2341 | if (!DATAGRAM_CONN_P (process)) | |
2342 | return Qnil; | |
2343 | ||
bed9664a | 2344 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2345 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2346 | datagram_address[channel].len); | |
2347 | } | |
2348 | ||
2349 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2350 | 2, 2, 0, | |
2351 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2352 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2353 | (process, address) | |
2354 | Lisp_Object process, address; | |
2355 | { | |
2356 | int channel; | |
2357 | int family, len; | |
2358 | ||
2359 | CHECK_PROCESS (process); | |
2360 | ||
2361 | if (!DATAGRAM_CONN_P (process)) | |
2362 | return Qnil; | |
2363 | ||
bed9664a | 2364 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2365 | |
2366 | len = get_lisp_to_sockaddr_size (address, &family); | |
2367 | if (datagram_address[channel].len != len) | |
2368 | return Qnil; | |
2369 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2370 | return address; | |
2371 | } | |
2372 | #endif | |
2373 | \f | |
2374 | ||
2375 | static struct socket_options { | |
2376 | /* The name of this option. Should be lowercase version of option | |
177c0ea7 | 2377 | name without SO_ prefix. */ |
e690ca94 | 2378 | char *name; |
e690ca94 KS |
2379 | /* Option level SOL_... */ |
2380 | int optlevel; | |
2381 | /* Option number SO_... */ | |
2382 | int optnum; | |
151ec9e2 | 2383 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2ccf3102 | 2384 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; |
e690ca94 KS |
2385 | } socket_options[] = |
2386 | { | |
2387 | #ifdef SO_BINDTODEVICE | |
151ec9e2 | 2388 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2389 | #endif |
2390 | #ifdef SO_BROADCAST | |
2ccf3102 | 2391 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2392 | #endif |
2393 | #ifdef SO_DONTROUTE | |
2ccf3102 | 2394 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2395 | #endif |
2396 | #ifdef SO_KEEPALIVE | |
2ccf3102 | 2397 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2398 | #endif |
2399 | #ifdef SO_LINGER | |
2ccf3102 | 2400 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2401 | #endif |
2402 | #ifdef SO_OOBINLINE | |
2ccf3102 | 2403 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2404 | #endif |
2405 | #ifdef SO_PRIORITY | |
2ccf3102 | 2406 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2407 | #endif |
2408 | #ifdef SO_REUSEADDR | |
2ccf3102 | 2409 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2410 | #endif |
2ccf3102 | 2411 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2412 | }; |
2413 | ||
2ccf3102 | 2414 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2415 | |
2ccf3102 KS |
2416 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2417 | Signals an error if setting a known option fails. | |
2418 | */ | |
e690ca94 KS |
2419 | |
2420 | static int | |
2ccf3102 | 2421 | set_socket_option (s, opt, val) |
e690ca94 | 2422 | int s; |
2ccf3102 | 2423 | Lisp_Object opt, val; |
e690ca94 | 2424 | { |
2ccf3102 KS |
2425 | char *name; |
2426 | struct socket_options *sopt; | |
2427 | int ret = 0; | |
e690ca94 | 2428 | |
2ccf3102 | 2429 | CHECK_SYMBOL (opt); |
e690ca94 | 2430 | |
2ccf3102 KS |
2431 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2432 | for (sopt = socket_options; sopt->name; sopt++) | |
2433 | if (strcmp (name, sopt->name) == 0) | |
2434 | break; | |
e690ca94 | 2435 | |
2ccf3102 KS |
2436 | switch (sopt->opttype) |
2437 | { | |
2438 | case SOPT_BOOL: | |
2439 | { | |
2440 | int optval; | |
2441 | optval = NILP (val) ? 0 : 1; | |
2442 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2443 | &optval, sizeof (optval)); | |
2444 | break; | |
2445 | } | |
e690ca94 | 2446 | |
2ccf3102 KS |
2447 | case SOPT_INT: |
2448 | { | |
2449 | int optval; | |
2450 | if (INTEGERP (val)) | |
2451 | optval = XINT (val); | |
2452 | else | |
2453 | error ("Bad option value for %s", name); | |
2454 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2455 | &optval, sizeof (optval)); | |
2456 | break; | |
2457 | } | |
e690ca94 | 2458 | |
151ec9e2 KS |
2459 | #ifdef SO_BINDTODEVICE |
2460 | case SOPT_IFNAME: | |
2ccf3102 | 2461 | { |
151ec9e2 KS |
2462 | char devname[IFNAMSIZ+1]; |
2463 | ||
2464 | /* This is broken, at least in the Linux 2.4 kernel. | |
2465 | To unbind, the arg must be a zero integer, not the empty string. | |
2466 | This should work on all systems. KFS. 2003-09-23. */ | |
2467 | bzero (devname, sizeof devname); | |
2468 | if (STRINGP (val)) | |
2469 | { | |
2470 | char *arg = (char *) SDATA (val); | |
2471 | int len = min (strlen (arg), IFNAMSIZ); | |
2472 | bcopy (arg, devname, len); | |
2473 | } | |
2474 | else if (!NILP (val)) | |
2ccf3102 KS |
2475 | error ("Bad option value for %s", name); |
2476 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
151ec9e2 KS |
2477 | devname, IFNAMSIZ); |
2478 | break; | |
2ccf3102 | 2479 | } |
151ec9e2 | 2480 | #endif |
e690ca94 | 2481 | |
177c0ea7 | 2482 | #ifdef SO_LINGER |
2ccf3102 KS |
2483 | case SOPT_LINGER: |
2484 | { | |
2485 | struct linger linger; | |
e690ca94 | 2486 | |
2ccf3102 KS |
2487 | linger.l_onoff = 1; |
2488 | linger.l_linger = 0; | |
2489 | if (INTEGERP (val)) | |
2490 | linger.l_linger = XINT (val); | |
2491 | else | |
2492 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2493 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2494 | &linger, sizeof (linger)); | |
2495 | break; | |
2496 | } | |
e690ca94 | 2497 | #endif |
2ccf3102 KS |
2498 | |
2499 | default: | |
2500 | return 0; | |
e690ca94 | 2501 | } |
2ccf3102 KS |
2502 | |
2503 | if (ret < 0) | |
2504 | report_file_error ("Cannot set network option", | |
2505 | Fcons (opt, Fcons (val, Qnil))); | |
2506 | return (1 << sopt->optbit); | |
e690ca94 KS |
2507 | } |
2508 | ||
2ccf3102 KS |
2509 | |
2510 | DEFUN ("set-network-process-option", | |
2511 | Fset_network_process_option, Sset_network_process_option, | |
2512 | 3, 4, 0, | |
2513 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2514 | See `make-network-process' for a list of options and values. | |
2515 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2516 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2517 | (process, option, value, no_error) | |
2518 | Lisp_Object process, option, value; | |
2519 | Lisp_Object no_error; | |
e690ca94 | 2520 | { |
e1283999 | 2521 | int s; |
151ec9e2 | 2522 | struct Lisp_Process *p; |
e690ca94 | 2523 | |
e690ca94 | 2524 | CHECK_PROCESS (process); |
151ec9e2 KS |
2525 | p = XPROCESS (process); |
2526 | if (!NETCONN1_P (p)) | |
2527 | error ("Process is not a network process"); | |
2ccf3102 | 2528 | |
151ec9e2 | 2529 | s = XINT (p->infd); |
2ccf3102 KS |
2530 | if (s < 0) |
2531 | error ("Process is not running"); | |
2532 | ||
2533 | if (set_socket_option (s, option, value)) | |
151ec9e2 KS |
2534 | { |
2535 | p->childp = Fplist_put (p->childp, option, value); | |
2536 | return Qt; | |
2537 | } | |
2ccf3102 KS |
2538 | |
2539 | if (NILP (no_error)) | |
2540 | error ("Unknown or unsupported option"); | |
2541 | ||
2542 | return Qnil; | |
e690ca94 | 2543 | } |
2ccf3102 | 2544 | |
e690ca94 | 2545 | \f |
e690ca94 KS |
2546 | /* A version of request_sigio suitable for a record_unwind_protect. */ |
2547 | ||
ff6daed3 | 2548 | static Lisp_Object |
e690ca94 KS |
2549 | unwind_request_sigio (dummy) |
2550 | Lisp_Object dummy; | |
2551 | { | |
2552 | if (interrupt_input) | |
2553 | request_sigio (); | |
2554 | return Qnil; | |
2555 | } | |
2556 | ||
2557 | /* Create a network stream/datagram client/server process. Treated | |
2558 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2559 | differences are in status display and process deletion. A network |
2560 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2561 | stop/continue it and deactivate/close it via delete-process */ |
2562 | ||
177c0ea7 JB |
2563 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2564 | 0, MANY, 0, | |
e690ca94 KS |
2565 | doc: /* Create and return a network server or client process. |
2566 | ||
fa9d4315 | 2567 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2568 | input and output work as for subprocesses and `delete-process' closes |
2569 | a network connection. However, a network process has no process id, | |
d22426e1 | 2570 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2571 | processes. |
2572 | ||
2573 | Arguments are specified as keyword/argument pairs. The following | |
2574 | arguments are defined: | |
2575 | ||
2576 | :name NAME -- NAME is name for process. It is modified if necessary | |
2577 | to make it unique. | |
2578 | ||
2579 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2580 | with the process. Process output goes at end of that buffer, unless | |
2581 | you specify an output stream or filter function to handle the output. | |
2582 | BUFFER may be also nil, meaning that this process is not associated | |
2583 | with any buffer. | |
2584 | ||
2585 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2586 | address. The symbol `local' specifies the local host. If specified | |
2587 | for a server process, it must be a valid name or address for the local | |
2588 | host, and only clients connecting to that address will be accepted. | |
2589 | ||
2590 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2591 | integer specifying a port number to connect to. If SERVICE is t, | |
2592 | a random port number is selected for the server. | |
2593 | ||
9057ff80 KS |
2594 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
2595 | stream type connection, `datagram' creates a datagram type connection. | |
2596 | ||
e690ca94 KS |
2597 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
2598 | service specified by HOST and SERVICE. The default address family is | |
2599 | Inet (or IPv4) for the host and port number specified by HOST and | |
2600 | SERVICE. Other address families supported are: | |
2601 | local -- for a local (i.e. UNIX) address specified by SERVICE. | |
2602 | ||
2603 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2604 | This parameter is ignored when opening a client process. When specified | |
2605 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2606 | ||
2607 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2608 | connection. This parameter is ignored when opening a stream server | |
2609 | process. For a datagram server process, it specifies the initial | |
2610 | setting of the remote datagram address. When specified for a client | |
2611 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2612 | ||
2613 | The format of ADDRESS depends on the address family: | |
2614 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2615 | corresponding to numeric IP address A.B.C.D and port number P. | |
2616 | - A local address is represented as a string with the address in the | |
2617 | local address space. | |
2618 | - An "unsupported family" address is represented by a cons (F . AV) | |
2619 | where F is the family number and AV is a vector containing the socket | |
2620 | address data with one element per address data byte. Do not rely on | |
2621 | this format in portable code, as it may depend on implementation | |
2622 | defined constants, data sizes, and data structure alignment. | |
2623 | ||
2ccf3102 KS |
2624 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2625 | system used for both reading and writing for this process. If CODING | |
2626 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2627 | ENCODING is used for writing. | |
e690ca94 KS |
2628 | |
2629 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2630 | return without waiting for the connection to complete; instead, the | |
2631 | sentinel function will be called with second arg matching "open" (if | |
2632 | successful) or "failed" when the connect completes. Default is to use | |
2633 | a blocking connect (i.e. wait) for stream type connections. | |
2634 | ||
2635 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2636 | running when Emacs is exited. |
e690ca94 KS |
2637 | |
2638 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2639 | In the stopped state, a server process does not accept new | |
2640 | connections, and a client process does not handle incoming traffic. | |
2641 | The stopped state is cleared by `continue-process' and set by | |
2642 | `stop-process'. | |
2643 | ||
2644 | :filter FILTER -- Install FILTER as the process filter. | |
2645 | ||
7392e23c KS |
2646 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2647 | process filter are multibyte, otherwise they are unibyte. | |
2648 | If this keyword is not specified, the strings are multibyte iff | |
03f04413 KH |
2649 | `default-enable-multibyte-characters' is non-nil. |
2650 | ||
e690ca94 KS |
2651 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2652 | ||
2653 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2654 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2655 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2656 | is the server process, CLIENT is the new process for the connection, | |
2657 | and MESSAGE is a string. | |
2658 | ||
faa7db08 | 2659 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2660 | |
2ccf3102 | 2661 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2662 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
2ccf3102 KS |
2663 | If QLEN is an integer, it is used as the max. length of the server's |
2664 | pending connection queue (also known as the backlog); the default | |
2665 | queue length is 5. Default is to create a client process. | |
2666 | ||
2667 | The following network options can be specified for this connection: | |
2668 | ||
2ccf3102 KS |
2669 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. |
2670 | :dontroute BOOL -- Only send to directly connected hosts. | |
2671 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2672 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2673 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2674 | :priority INT -- Set protocol defined priority for sent packets. | |
2675 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2676 | (this is allowed by default for a server process). | |
151ec9e2 KS |
2677 | :bindtodevice NAME -- bind to interface NAME. Using this may require |
2678 | special privileges on some systems. | |
2ccf3102 KS |
2679 | |
2680 | Consult the relevant system programmer's manual pages for more | |
2681 | information on using these options. | |
2682 | ||
2683 | ||
2684 | A server process will listen for and accept connections from clients. | |
2685 | When a client connection is accepted, a new network process is created | |
2686 | for the connection with the following parameters: | |
e690ca94 | 2687 | |
e690ca94 KS |
2688 | - The client's process name is constructed by concatenating the server |
2689 | process' NAME and a client identification string. | |
2690 | - If the FILTER argument is non-nil, the client process will not get a | |
2691 | separate process buffer; otherwise, the client's process buffer is a newly | |
2692 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2693 | NAME concatenated with the client identification string. |
e690ca94 KS |
2694 | - The connection type and the process filter and sentinel parameters are |
2695 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2696 | - The client process' contact info is set according to the client's | |
2697 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2698 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2699 | |
2700 | Notice that the FILTER and SENTINEL args are never used directly by | |
2701 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2702 | the server process, but via the optional :log function, accepted (and |
2703 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2704 | |
365aee82 KS |
2705 | The original argument list, modified with the actual connection |
2706 | information, is available via the `process-contact' function. | |
365aee82 | 2707 | |
fa9d4315 | 2708 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
2709 | (nargs, args) |
2710 | int nargs; | |
2711 | Lisp_Object *args; | |
d0d6b7c5 JB |
2712 | { |
2713 | Lisp_Object proc; | |
e690ca94 KS |
2714 | Lisp_Object contact; |
2715 | struct Lisp_Process *p; | |
70dbdb36 | 2716 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2717 | struct addrinfo ai, *res, *lres; |
2718 | struct addrinfo hints; | |
2719 | char *portstring, portbuf[128]; | |
70dbdb36 | 2720 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2721 | struct _emacs_addrinfo |
2722 | { | |
2723 | int ai_family; | |
2724 | int ai_socktype; | |
2725 | int ai_protocol; | |
2726 | int ai_addrlen; | |
2727 | struct sockaddr *ai_addr; | |
2728 | struct _emacs_addrinfo *ai_next; | |
2729 | } ai, *res, *lres; | |
418b48fd | 2730 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2731 | struct sockaddr_in address_in; |
2732 | #ifdef HAVE_LOCAL_SOCKETS | |
2733 | struct sockaddr_un address_un; | |
2734 | #endif | |
2735 | int port; | |
dd2a17ab KS |
2736 | int ret = 0; |
2737 | int xerrno = 0; | |
418b48fd | 2738 | int s = -1, outch, inch; |
e690ca94 | 2739 | struct gcpro gcpro1; |
aed13378 | 2740 | int count = SPECPDL_INDEX (); |
5684cd6e | 2741 | int count1; |
e690ca94 KS |
2742 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2743 | Lisp_Object tem; | |
2744 | Lisp_Object name, buffer, host, service, address; | |
2745 | Lisp_Object filter, sentinel; | |
2746 | int is_non_blocking_client = 0; | |
2ccf3102 | 2747 | int is_server = 0, backlog = 5; |
9057ff80 | 2748 | int socktype; |
e690ca94 KS |
2749 | int family = -1; |
2750 | ||
2751 | if (nargs == 0) | |
2752 | return Qnil; | |
dd2a17ab | 2753 | |
e690ca94 KS |
2754 | /* Save arguments for process-contact and clone-process. */ |
2755 | contact = Flist (nargs, args); | |
2756 | GCPRO1 (contact); | |
2757 | ||
bff3ed0a RS |
2758 | #ifdef WINDOWSNT |
2759 | /* Ensure socket support is loaded if available. */ | |
2760 | init_winsock (TRUE); | |
2761 | #endif | |
2762 | ||
9057ff80 KS |
2763 | /* :type TYPE (nil: stream, datagram */ |
2764 | tem = Fplist_get (contact, QCtype); | |
2765 | if (NILP (tem)) | |
2766 | socktype = SOCK_STREAM; | |
2767 | #ifdef DATAGRAM_SOCKETS | |
2768 | else if (EQ (tem, Qdatagram)) | |
2769 | socktype = SOCK_DGRAM; | |
e690ca94 | 2770 | #endif |
9057ff80 KS |
2771 | else |
2772 | error ("Unsupported connection type"); | |
e690ca94 KS |
2773 | |
2774 | /* :server BOOL */ | |
2775 | tem = Fplist_get (contact, QCserver); | |
2776 | if (!NILP (tem)) | |
2777 | { | |
75728599 JR |
2778 | /* Don't support network sockets when non-blocking mode is |
2779 | not available, since a blocked Emacs is not useful. */ | |
2780 | #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY)) | |
e690ca94 KS |
2781 | error ("Network servers not supported"); |
2782 | #else | |
2783 | is_server = 1; | |
2ccf3102 KS |
2784 | if (INTEGERP (tem)) |
2785 | backlog = XINT (tem); | |
e690ca94 KS |
2786 | #endif |
2787 | } | |
2788 | ||
2789 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2790 | QCaddress = is_server ? QClocal : QCremote; | |
2791 | ||
2792 | /* :wait BOOL */ | |
2793 | if (!is_server && socktype == SOCK_STREAM | |
2794 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) | |
2795 | { | |
2796 | #ifndef NON_BLOCKING_CONNECT | |
2797 | error ("Non-blocking connect not supported"); | |
2798 | #else | |
2799 | is_non_blocking_client = 1; | |
2800 | #endif | |
2801 | } | |
2802 | ||
2803 | name = Fplist_get (contact, QCname); | |
2804 | buffer = Fplist_get (contact, QCbuffer); | |
2805 | filter = Fplist_get (contact, QCfilter); | |
2806 | sentinel = Fplist_get (contact, QCsentinel); | |
2807 | ||
b7826503 | 2808 | CHECK_STRING (name); |
e690ca94 KS |
2809 | |
2810 | #ifdef TERM | |
2811 | /* Let's handle TERM before things get complicated ... */ | |
2812 | host = Fplist_get (contact, QChost); | |
b7826503 | 2813 | CHECK_STRING (host); |
177c0ea7 | 2814 | |
e690ca94 KS |
2815 | service = Fplist_get (contact, QCservice); |
2816 | if (INTEGERP (service)) | |
2817 | port = htons ((unsigned short) XINT (service)); | |
2818 | else | |
2819 | { | |
2820 | struct servent *svc_info; | |
2821 | CHECK_STRING (service); | |
d5db4077 | 2822 | svc_info = getservbyname (SDATA (service), "tcp"); |
e690ca94 | 2823 | if (svc_info == 0) |
d5db4077 | 2824 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2825 | port = svc_info->s_port; |
2826 | } | |
2827 | ||
2828 | s = connect_server (0); | |
2829 | if (s < 0) | |
2830 | report_file_error ("error creating socket", Fcons (name, Qnil)); | |
d5db4077 | 2831 | send_command (s, C_PORT, 0, "%s:%d", SDATA (host), ntohs (port)); |
e690ca94 KS |
2832 | send_command (s, C_DUMB, 1, 0); |
2833 | ||
2834 | #else /* not TERM */ | |
2835 | ||
2836 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ | |
2837 | ai.ai_socktype = socktype; | |
2838 | ai.ai_protocol = 0; | |
2839 | ai.ai_next = NULL; | |
2840 | res = &ai; | |
a319f7c1 | 2841 | |
e690ca94 KS |
2842 | /* :local ADDRESS or :remote ADDRESS */ |
2843 | address = Fplist_get (contact, QCaddress); | |
2844 | if (!NILP (address)) | |
a319f7c1 | 2845 | { |
e690ca94 KS |
2846 | host = service = Qnil; |
2847 | ||
2848 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2849 | error ("Malformed :address"); | |
2850 | ai.ai_family = family; | |
2851 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2852 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2853 | goto open_socket; | |
a319f7c1 | 2854 | } |
e690ca94 KS |
2855 | |
2856 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2857 | tem = Fplist_get (contact, QCfamily); | |
2858 | if (INTEGERP (tem)) | |
2859 | family = XINT (tem); | |
a319f7c1 KH |
2860 | else |
2861 | { | |
e690ca94 KS |
2862 | if (NILP (tem)) |
2863 | family = AF_INET; | |
2864 | #ifdef HAVE_LOCAL_SOCKETS | |
2865 | else if (EQ (tem, Qlocal)) | |
2866 | family = AF_LOCAL; | |
2867 | #endif | |
a319f7c1 | 2868 | } |
e690ca94 KS |
2869 | if (family < 0) |
2870 | error ("Unknown address family"); | |
2871 | ai.ai_family = family; | |
2872 | ||
2873 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2874 | service = Fplist_get (contact, QCservice); | |
2875 | ||
2876 | #ifdef HAVE_LOCAL_SOCKETS | |
2877 | if (family == AF_LOCAL) | |
d0d6b7c5 | 2878 | { |
e690ca94 KS |
2879 | /* Host is not used. */ |
2880 | host = Qnil; | |
b7826503 | 2881 | CHECK_STRING (service); |
e690ca94 KS |
2882 | bzero (&address_un, sizeof address_un); |
2883 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 2884 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
2885 | ai.ai_addr = (struct sockaddr *) &address_un; |
2886 | ai.ai_addrlen = sizeof address_un; | |
2887 | goto open_socket; | |
d0d6b7c5 | 2888 | } |
e690ca94 | 2889 | #endif |
a319f7c1 | 2890 | |
e690ca94 KS |
2891 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
2892 | host = Fplist_get (contact, QChost); | |
2893 | if (!NILP (host)) | |
2894 | { | |
2895 | if (EQ (host, Qlocal)) | |
2896 | host = build_string ("localhost"); | |
2897 | CHECK_STRING (host); | |
2898 | } | |
d0d6b7c5 | 2899 | |
798b64bb KH |
2900 | /* Slow down polling to every ten seconds. |
2901 | Some kernels have a bug which causes retrying connect to fail | |
2902 | after a connect. Polling can interfere with gethostbyname too. */ | |
2903 | #ifdef POLL_FOR_INPUT | |
e690ca94 KS |
2904 | if (socktype == SOCK_STREAM) |
2905 | { | |
2906 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
2907 | bind_polling_period (10); | |
2908 | } | |
798b64bb KH |
2909 | #endif |
2910 | ||
a319f7c1 | 2911 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2912 | /* If we have a host, use getaddrinfo to resolve both host and service. |
2913 | Otherwise, use getservbyname to lookup the service. */ | |
2914 | if (!NILP (host)) | |
2915 | { | |
2916 | ||
2917 | /* SERVICE can either be a string or int. | |
2918 | Convert to a C string for later use by getaddrinfo. */ | |
2919 | if (EQ (service, Qt)) | |
2920 | portstring = "0"; | |
2921 | else if (INTEGERP (service)) | |
2922 | { | |
2923 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
2924 | portstring = portbuf; | |
2925 | } | |
2926 | else | |
2927 | { | |
2928 | CHECK_STRING (service); | |
d5db4077 | 2929 | portstring = SDATA (service); |
e690ca94 KS |
2930 | } |
2931 | ||
2932 | immediate_quit = 1; | |
2933 | QUIT; | |
2934 | memset (&hints, 0, sizeof (hints)); | |
2935 | hints.ai_flags = 0; | |
2936 | hints.ai_family = NILP (Fplist_member (contact, QCfamily)) ? AF_UNSPEC : family; | |
2937 | hints.ai_socktype = socktype; | |
2938 | hints.ai_protocol = 0; | |
d5db4077 | 2939 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 2940 | if (ret) |
f6270f62 | 2941 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 2942 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 2943 | #else |
d5db4077 | 2944 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 2945 | #endif |
e690ca94 | 2946 | immediate_quit = 0; |
a319f7c1 | 2947 | |
e690ca94 KS |
2948 | goto open_socket; |
2949 | } | |
2950 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 2951 | |
e690ca94 KS |
2952 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
2953 | has been specified (e.g. for a local server process). */ | |
2954 | ||
2955 | if (EQ (service, Qt)) | |
2956 | port = 0; | |
2957 | else if (INTEGERP (service)) | |
2958 | port = htons ((unsigned short) XINT (service)); | |
2959 | else | |
616da37c | 2960 | { |
e690ca94 KS |
2961 | struct servent *svc_info; |
2962 | CHECK_STRING (service); | |
177c0ea7 | 2963 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
2964 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
2965 | if (svc_info == 0) | |
d5db4077 | 2966 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2967 | port = svc_info->s_port; |
2968 | } | |
2969 | ||
2970 | bzero (&address_in, sizeof address_in); | |
2971 | address_in.sin_family = family; | |
2972 | address_in.sin_addr.s_addr = INADDR_ANY; | |
2973 | address_in.sin_port = port; | |
2974 | ||
2975 | #ifndef HAVE_GETADDRINFO | |
2976 | if (!NILP (host)) | |
2977 | { | |
2978 | struct hostent *host_info_ptr; | |
2979 | ||
2980 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 2981 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
2982 | immediate_quit = 1; |
2983 | QUIT; | |
d5db4077 | 2984 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 2985 | immediate_quit = 0; |
177c0ea7 | 2986 | |
e690ca94 KS |
2987 | if (host_info_ptr) |
2988 | { | |
2989 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
2990 | host_info_ptr->h_length); | |
2991 | family = host_info_ptr->h_addrtype; | |
2992 | address_in.sin_family = family; | |
2993 | } | |
2994 | else | |
2995 | /* Attempt to interpret host as numeric inet address */ | |
2996 | { | |
2997 | IN_ADDR numeric_addr; | |
d5db4077 | 2998 | numeric_addr = inet_addr ((char *) SDATA (host)); |
e690ca94 | 2999 | if (NUMERIC_ADDR_ERROR) |
d5db4077 | 3000 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3001 | |
e690ca94 KS |
3002 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
3003 | sizeof (address_in.sin_addr)); | |
3004 | } | |
d0d6b7c5 | 3005 | |
e690ca94 | 3006 | } |
dd2a17ab | 3007 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3008 | |
e690ca94 KS |
3009 | ai.ai_family = family; |
3010 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3011 | ai.ai_addrlen = sizeof address_in; | |
3012 | ||
3013 | open_socket: | |
3014 | ||
3015 | /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR) | |
3016 | when connect is interrupted. So let's not let it get interrupted. | |
3017 | Note we do not turn off polling, because polling is only used | |
3018 | when not interrupt_input, and thus not normally used on the systems | |
3019 | which have this bug. On systems which use polling, there's no way | |
3020 | to quit if polling is turned off. */ | |
3021 | if (interrupt_input | |
3022 | && !is_server && socktype == SOCK_STREAM) | |
3023 | { | |
3024 | /* Comment from KFS: The original open-network-stream code | |
3025 | didn't unwind protect this, but it seems like the proper | |
3026 | thing to do. In any case, I don't see how it could harm to | |
3027 | do this -- and it makes cleanup (using unbind_to) easier. */ | |
3028 | record_unwind_protect (unwind_request_sigio, Qnil); | |
3029 | unrequest_sigio (); | |
3030 | } | |
3031 | ||
dd2a17ab | 3032 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3033 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3034 | s = -1; |
457a9bee | 3035 | |
dd2a17ab KS |
3036 | for (lres = res; lres; lres = lres->ai_next) |
3037 | { | |
2ccf3102 KS |
3038 | int optn, optbits; |
3039 | ||
4e9dd03b KS |
3040 | retry_connect: |
3041 | ||
dd2a17ab KS |
3042 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3043 | if (s < 0) | |
3044 | { | |
3045 | xerrno = errno; | |
3046 | continue; | |
3047 | } | |
0f2ee0c1 | 3048 | |
e690ca94 KS |
3049 | #ifdef DATAGRAM_SOCKETS |
3050 | if (!is_server && socktype == SOCK_DGRAM) | |
3051 | break; | |
3052 | #endif /* DATAGRAM_SOCKETS */ | |
3053 | ||
dd2a17ab | 3054 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3055 | if (is_non_blocking_client) |
dd2a17ab KS |
3056 | { |
3057 | #ifdef O_NONBLOCK | |
3058 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3059 | #else | |
3060 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3061 | #endif | |
3062 | if (ret < 0) | |
3063 | { | |
3064 | xerrno = errno; | |
3065 | emacs_close (s); | |
3066 | s = -1; | |
3067 | continue; | |
3068 | } | |
3069 | } | |
3070 | #endif | |
177c0ea7 | 3071 | |
dd2a17ab | 3072 | /* Make us close S if quit. */ |
dd2a17ab KS |
3073 | record_unwind_protect (close_file_unwind, make_number (s)); |
3074 | ||
2ccf3102 KS |
3075 | /* Parse network options in the arg list. |
3076 | We simply ignore anything which isn't a known option (including other keywords). | |
3077 | An error is signalled if setting a known option fails. */ | |
3078 | for (optn = optbits = 0; optn < nargs-1; optn += 2) | |
3079 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3080 | ||
e690ca94 KS |
3081 | if (is_server) |
3082 | { | |
3083 | /* Configure as a server socket. */ | |
2ccf3102 KS |
3084 | |
3085 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3086 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3087 | #ifdef HAVE_LOCAL_SOCKETS |
3088 | if (family != AF_LOCAL) | |
3089 | #endif | |
2ccf3102 KS |
3090 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3091 | { | |
3092 | int optval = 1; | |
3093 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
7c402969 | 3094 | report_file_error ("Cannot set reuse option on server socket", Qnil); |
2ccf3102 | 3095 | } |
177c0ea7 | 3096 | |
e690ca94 KS |
3097 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3098 | report_file_error ("Cannot bind server socket", Qnil); | |
3099 | ||
3100 | #ifdef HAVE_GETSOCKNAME | |
3101 | if (EQ (service, Qt)) | |
3102 | { | |
3103 | struct sockaddr_in sa1; | |
3104 | int len1 = sizeof (sa1); | |
3105 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3106 | { | |
3107 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3108 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3109 | contact = Fplist_put (contact, QCservice, service); |
3110 | } | |
3111 | } | |
3112 | #endif | |
3113 | ||
2ccf3102 | 3114 | if (socktype == SOCK_STREAM && listen (s, backlog)) |
e690ca94 KS |
3115 | report_file_error ("Cannot listen on server socket", Qnil); |
3116 | ||
3117 | break; | |
3118 | } | |
3119 | ||
dd2a17ab KS |
3120 | immediate_quit = 1; |
3121 | QUIT; | |
3122 | ||
3123 | /* This turns off all alarm-based interrupts; the | |
3124 | bind_polling_period call above doesn't always turn all the | |
3125 | short-interval ones off, especially if interrupt_input is | |
3126 | set. | |
3127 | ||
3128 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3129 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3130 | |
3131 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3132 | ||
f40f9848 | 3133 | turn_on_atimers (0); |
dd2a17ab KS |
3134 | |
3135 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3136 | xerrno = errno; | |
3137 | ||
f40f9848 | 3138 | turn_on_atimers (1); |
dd2a17ab KS |
3139 | |
3140 | if (ret == 0 || xerrno == EISCONN) | |
3141 | { | |
dd2a17ab KS |
3142 | /* The unwind-protect will be discarded afterwards. |
3143 | Likewise for immediate_quit. */ | |
3144 | break; | |
3145 | } | |
3146 | ||
3147 | #ifdef NON_BLOCKING_CONNECT | |
3148 | #ifdef EINPROGRESS | |
e690ca94 | 3149 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3150 | break; |
3151 | #else | |
3152 | #ifdef EWOULDBLOCK | |
e690ca94 | 3153 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3154 | break; |
3155 | #endif | |
3156 | #endif | |
3157 | #endif | |
e333e864 | 3158 | |
0f2ee0c1 RS |
3159 | immediate_quit = 0; |
3160 | ||
dd2a17ab | 3161 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3162 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3163 | emacs_close (s); |
dd2a17ab | 3164 | s = -1; |
4e9dd03b KS |
3165 | |
3166 | if (xerrno == EINTR) | |
3167 | goto retry_connect; | |
dd2a17ab | 3168 | } |
457a9bee | 3169 | |
e690ca94 KS |
3170 | if (s >= 0) |
3171 | { | |
3172 | #ifdef DATAGRAM_SOCKETS | |
3173 | if (socktype == SOCK_DGRAM) | |
3174 | { | |
3175 | if (datagram_address[s].sa) | |
3176 | abort (); | |
3177 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3178 | datagram_address[s].len = lres->ai_addrlen; | |
3179 | if (is_server) | |
3180 | { | |
3181 | Lisp_Object remote; | |
3182 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3183 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3184 | { | |
3185 | int rfamily, rlen; | |
3186 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3187 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3188 | conv_lisp_to_sockaddr (rfamily, remote, | |
3189 | datagram_address[s].sa, rlen); | |
3190 | } | |
3191 | } | |
3192 | else | |
3193 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3194 | } | |
3195 | #endif | |
177c0ea7 | 3196 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3197 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3198 | #ifdef HAVE_GETSOCKNAME |
3199 | if (!is_server) | |
3200 | { | |
3201 | struct sockaddr_in sa1; | |
3202 | int len1 = sizeof (sa1); | |
3203 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3204 | contact = Fplist_put (contact, QClocal, | |
3205 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3206 | } | |
3207 | #endif | |
e690ca94 KS |
3208 | } |
3209 | ||
dd2a17ab | 3210 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3211 | if (res != &ai) |
3212 | freeaddrinfo (res); | |
dd2a17ab KS |
3213 | #endif |
3214 | ||
e690ca94 KS |
3215 | immediate_quit = 0; |
3216 | ||
3217 | /* Discard the unwind protect for closing S, if any. */ | |
3218 | specpdl_ptr = specpdl + count1; | |
3219 | ||
3220 | /* Unwind bind_polling_period and request_sigio. */ | |
3221 | unbind_to (count, Qnil); | |
3222 | ||
dd2a17ab KS |
3223 | if (s < 0) |
3224 | { | |
dd2a17ab KS |
3225 | /* If non-blocking got this far - and failed - assume non-blocking is |
3226 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3227 | the normal blocking calls to open-network-stream handles this error |
3228 | better. */ | |
3229 | if (is_non_blocking_client) | |
dd2a17ab | 3230 | return Qnil; |
dd2a17ab | 3231 | |
d0d6b7c5 | 3232 | errno = xerrno; |
e690ca94 KS |
3233 | if (is_server) |
3234 | report_file_error ("make server process failed", contact); | |
3235 | else | |
3236 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3237 | } |
44ade2e9 | 3238 | |
e690ca94 | 3239 | #endif /* not TERM */ |
d0d6b7c5 JB |
3240 | |
3241 | inch = s; | |
59f23005 | 3242 | outch = s; |
d0d6b7c5 JB |
3243 | |
3244 | if (!NILP (buffer)) | |
3245 | buffer = Fget_buffer_create (buffer); | |
3246 | proc = make_process (name); | |
3247 | ||
3248 | chan_process[inch] = proc; | |
3249 | ||
3250 | #ifdef O_NONBLOCK | |
3251 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3252 | #else | |
3253 | #ifdef O_NDELAY | |
3254 | fcntl (inch, F_SETFL, O_NDELAY); | |
3255 | #endif | |
3256 | #endif | |
3257 | ||
e690ca94 KS |
3258 | p = XPROCESS (proc); |
3259 | ||
3260 | p->childp = contact; | |
faa7db08 | 3261 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
177c0ea7 | 3262 | |
e690ca94 KS |
3263 | p->buffer = buffer; |
3264 | p->sentinel = sentinel; | |
3265 | p->filter = filter; | |
03f04413 KH |
3266 | p->filter_multibyte = buffer_defaults.enable_multibyte_characters; |
3267 | /* Override the above only if :filter-multibyte is specified. */ | |
3268 | if (! NILP (Fplist_member (contact, QCfilter_multibyte))) | |
3269 | p->filter_multibyte = Fplist_get (contact, QCfilter_multibyte); | |
e690ca94 KS |
3270 | p->log = Fplist_get (contact, QClog); |
3271 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
3272 | p->kill_without_query = Qt; | |
3273 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) | |
3274 | p->command = Qt; | |
3275 | p->pid = Qnil; | |
3276 | XSETINT (p->infd, inch); | |
3277 | XSETINT (p->outfd, outch); | |
3278 | if (is_server && socktype == SOCK_STREAM) | |
3279 | p->status = Qlisten; | |
dd2a17ab KS |
3280 | |
3281 | #ifdef NON_BLOCKING_CONNECT | |
e690ca94 | 3282 | if (is_non_blocking_client) |
dd2a17ab KS |
3283 | { |
3284 | /* We may get here if connect did succeed immediately. However, | |
3285 | in that case, we still need to signal this like a non-blocking | |
3286 | connection. */ | |
e690ca94 | 3287 | p->status = Qconnect; |
dd2a17ab KS |
3288 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3289 | { | |
3290 | FD_SET (inch, &connect_wait_mask); | |
3291 | num_pending_connects++; | |
3292 | } | |
3293 | } | |
3294 | else | |
3295 | #endif | |
e690ca94 KS |
3296 | /* A server may have a client filter setting of Qt, but it must |
3297 | still listen for incoming connects unless it is stopped. */ | |
3298 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3299 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3300 | { |
3301 | FD_SET (inch, &input_wait_mask); | |
3302 | FD_SET (inch, &non_keyboard_wait_mask); | |
3303 | } | |
3304 | ||
7d0e672e RS |
3305 | if (inch > max_process_desc) |
3306 | max_process_desc = inch; | |
d0d6b7c5 | 3307 | |
e690ca94 KS |
3308 | tem = Fplist_member (contact, QCcoding); |
3309 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3310 | tem = Qnil; /* No error message (too late!). */ | |
3311 | ||
67918941 RS |
3312 | { |
3313 | /* Setup coding systems for communicating with the network stream. */ | |
3314 | struct gcpro gcpro1; | |
3315 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3316 | Lisp_Object coding_systems = Qt; | |
3317 | Lisp_Object args[5], val; | |
3318 | ||
e690ca94 | 3319 | if (!NILP (tem)) |
2ccf3102 KS |
3320 | { |
3321 | val = XCAR (XCDR (tem)); | |
3322 | if (CONSP (val)) | |
3323 | val = XCAR (val); | |
3324 | } | |
e690ca94 | 3325 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3326 | val = Vcoding_system_for_read; |
41d03b9a GM |
3327 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3328 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3329 | /* We dare not decode end-of-line format by setting VAL to |
3330 | Qraw_text, because the existing Emacs Lisp libraries | |
3331 | assume that they receive bare code including a sequene of | |
3332 | CR LF. */ | |
3333 | val = Qnil; | |
3334 | else | |
3335 | { | |
991234f0 KS |
3336 | if (NILP (host) || NILP (service)) |
3337 | coding_systems = Qnil; | |
3338 | else | |
3339 | { | |
3340 | args[0] = Qopen_network_stream, args[1] = name, | |
3341 | args[2] = buffer, args[3] = host, args[4] = service; | |
3342 | GCPRO1 (proc); | |
3343 | coding_systems = Ffind_operation_coding_system (5, args); | |
3344 | UNGCPRO; | |
3345 | } | |
67918941 | 3346 | if (CONSP (coding_systems)) |
70949dac | 3347 | val = XCAR (coding_systems); |
67918941 | 3348 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3349 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3350 | else |
3351 | val = Qnil; | |
3352 | } | |
e690ca94 | 3353 | p->decode_coding_system = val; |
0fa1789e | 3354 | |
e690ca94 | 3355 | if (!NILP (tem)) |
2ccf3102 KS |
3356 | { |
3357 | val = XCAR (XCDR (tem)); | |
3358 | if (CONSP (val)) | |
3359 | val = XCDR (val); | |
3360 | } | |
e690ca94 | 3361 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3362 | val = Vcoding_system_for_write; |
3363 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3364 | val = Qnil; | |
3365 | else | |
3366 | { | |
3367 | if (EQ (coding_systems, Qt)) | |
3368 | { | |
991234f0 KS |
3369 | if (NILP (host) || NILP (service)) |
3370 | coding_systems = Qnil; | |
3371 | else | |
3372 | { | |
3373 | args[0] = Qopen_network_stream, args[1] = name, | |
3374 | args[2] = buffer, args[3] = host, args[4] = service; | |
3375 | GCPRO1 (proc); | |
3376 | coding_systems = Ffind_operation_coding_system (5, args); | |
3377 | UNGCPRO; | |
3378 | } | |
67918941 RS |
3379 | } |
3380 | if (CONSP (coding_systems)) | |
70949dac | 3381 | val = XCDR (coding_systems); |
67918941 | 3382 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3383 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3384 | else |
3385 | val = Qnil; | |
3386 | } | |
e690ca94 | 3387 | p->encode_coding_system = val; |
67918941 | 3388 | } |
03f04413 | 3389 | setup_process_coding_systems (proc); |
0fa1789e | 3390 | |
e690ca94 KS |
3391 | p->decoding_buf = make_uninit_string (0); |
3392 | p->decoding_carryover = make_number (0); | |
3393 | p->encoding_buf = make_uninit_string (0); | |
3394 | p->encoding_carryover = make_number (0); | |
0fa1789e | 3395 | |
e690ca94 KS |
3396 | p->inherit_coding_system_flag |
3397 | = (!NILP (tem) || NILP (buffer) || !inherit_process_coding_system | |
aa91317a | 3398 | ? Qnil : Qt); |
52a1b894 | 3399 | |
d0d6b7c5 JB |
3400 | UNGCPRO; |
3401 | return proc; | |
3402 | } | |
3403 | #endif /* HAVE_SOCKETS */ | |
3404 | ||
161933c7 | 3405 | \f |
b8c7fd71 | 3406 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
161933c7 KS |
3407 | |
3408 | #ifdef SIOCGIFCONF | |
3409 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3410 | doc: /* Return an alist of all network interfaces and their network address. | |
3411 | Each element is a cons, the car of which is a string containing the | |
3412 | interface name, and the cdr is the network address in internal | |
e1283999 | 3413 | format; see the description of ADDRESS in `make-network-process'. */) |
161933c7 KS |
3414 | () |
3415 | { | |
3416 | struct ifconf ifconf; | |
3417 | struct ifreq *ifreqs = NULL; | |
3418 | int ifaces = 0; | |
3419 | int buf_size, s; | |
3420 | Lisp_Object res; | |
3421 | ||
3422 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3423 | if (s < 0) | |
3424 | return Qnil; | |
3425 | ||
3426 | again: | |
3427 | ifaces += 25; | |
3428 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3429 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3430 | if (!ifreqs) | |
3431 | { | |
3432 | close (s); | |
3433 | return Qnil; | |
3434 | } | |
3435 | ||
3436 | ifconf.ifc_len = buf_size; | |
3437 | ifconf.ifc_req = ifreqs; | |
3438 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3439 | { | |
3440 | close (s); | |
3441 | return Qnil; | |
3442 | } | |
3443 | ||
3444 | if (ifconf.ifc_len == buf_size) | |
3445 | goto again; | |
3446 | ||
3447 | close (s); | |
3448 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3449 | ||
3450 | res = Qnil; | |
3451 | while (--ifaces >= 0) | |
3452 | { | |
3453 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3454 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3455 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3456 | continue; | |
3457 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3458 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3459 | res = Fcons (Fcons (build_string (namebuf), | |
3460 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3461 | sizeof (struct sockaddr))), | |
3462 | res); | |
3463 | } | |
3464 | ||
3465 | return res; | |
3466 | } | |
b8c7fd71 | 3467 | #endif /* SIOCGIFCONF */ |
161933c7 KS |
3468 | |
3469 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3470 | ||
3471 | struct ifflag_def { | |
3472 | int flag_bit; | |
3473 | char *flag_sym; | |
3474 | }; | |
3475 | ||
3476 | static struct ifflag_def ifflag_table[] = { | |
3477 | #ifdef IFF_UP | |
3478 | { IFF_UP, "up" }, | |
3479 | #endif | |
3480 | #ifdef IFF_BROADCAST | |
3481 | { IFF_BROADCAST, "broadcast" }, | |
3482 | #endif | |
3483 | #ifdef IFF_DEBUG | |
3484 | { IFF_DEBUG, "debug" }, | |
3485 | #endif | |
3486 | #ifdef IFF_LOOPBACK | |
3487 | { IFF_LOOPBACK, "loopback" }, | |
3488 | #endif | |
3489 | #ifdef IFF_POINTOPOINT | |
3490 | { IFF_POINTOPOINT, "pointopoint" }, | |
3491 | #endif | |
3492 | #ifdef IFF_RUNNING | |
3493 | { IFF_RUNNING, "running" }, | |
3494 | #endif | |
3495 | #ifdef IFF_NOARP | |
3496 | { IFF_NOARP, "noarp" }, | |
3497 | #endif | |
3498 | #ifdef IFF_PROMISC | |
3499 | { IFF_PROMISC, "promisc" }, | |
3500 | #endif | |
3501 | #ifdef IFF_NOTRAILERS | |
3502 | { IFF_NOTRAILERS, "notrailers" }, | |
3503 | #endif | |
3504 | #ifdef IFF_ALLMULTI | |
3505 | { IFF_ALLMULTI, "allmulti" }, | |
3506 | #endif | |
3507 | #ifdef IFF_MASTER | |
3508 | { IFF_MASTER, "master" }, | |
3509 | #endif | |
3510 | #ifdef IFF_SLAVE | |
3511 | { IFF_SLAVE, "slave" }, | |
3512 | #endif | |
3513 | #ifdef IFF_MULTICAST | |
3514 | { IFF_MULTICAST, "multicast" }, | |
3515 | #endif | |
3516 | #ifdef IFF_PORTSEL | |
3517 | { IFF_PORTSEL, "portsel" }, | |
3518 | #endif | |
3519 | #ifdef IFF_AUTOMEDIA | |
3520 | { IFF_AUTOMEDIA, "automedia" }, | |
3521 | #endif | |
3522 | #ifdef IFF_DYNAMIC | |
3523 | { IFF_DYNAMIC, "dynamic" }, | |
3524 | #endif | |
3525 | { 0, 0 } | |
3526 | }; | |
3527 | ||
2ccf3102 | 3528 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, |
161933c7 KS |
3529 | doc: /* Return information about network interface named IFNAME. |
3530 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3531 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3532 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3533 | FLAGS is the current flags of the interface. */) | |
3534 | (ifname) | |
3535 | Lisp_Object ifname; | |
3536 | { | |
3537 | struct ifreq rq; | |
3538 | Lisp_Object res = Qnil; | |
3539 | Lisp_Object elt; | |
3540 | int s; | |
3541 | int any = 0; | |
3542 | ||
3543 | CHECK_STRING (ifname); | |
3544 | ||
3545 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
3546 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
3547 | ||
3548 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3549 | if (s < 0) | |
3550 | return Qnil; | |
3551 | ||
3552 | elt = Qnil; | |
559c53b3 | 3553 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) |
161933c7 KS |
3554 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3555 | { | |
3556 | int flags = rq.ifr_flags; | |
3557 | struct ifflag_def *fp; | |
3558 | int fnum; | |
3559 | ||
3560 | any++; | |
3561 | for (fp = ifflag_table; flags != 0 && fp; fp++) | |
3562 | { | |
3563 | if (flags & fp->flag_bit) | |
3564 | { | |
3565 | elt = Fcons (intern (fp->flag_sym), elt); | |
3566 | flags -= fp->flag_bit; | |
3567 | } | |
3568 | } | |
3569 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3570 | { | |
3571 | if (flags & (1 << fnum)) | |
3572 | { | |
3573 | elt = Fcons (make_number (fnum), elt); | |
3574 | } | |
3575 | } | |
3576 | } | |
3577 | #endif | |
3578 | res = Fcons (elt, res); | |
3579 | ||
3580 | elt = Qnil; | |
559c53b3 | 3581 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) |
161933c7 KS |
3582 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3583 | { | |
b8c7fd71 | 3584 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); |
161933c7 KS |
3585 | register struct Lisp_Vector *p = XVECTOR (hwaddr); |
3586 | int n; | |
3587 | ||
3588 | any++; | |
3589 | for (n = 0; n < 6; n++) | |
3590 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
e1283999 | 3591 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); |
161933c7 KS |
3592 | } |
3593 | #endif | |
3594 | res = Fcons (elt, res); | |
3595 | ||
3596 | elt = Qnil; | |
b8c7fd71 | 3597 | #if defined(SIOCGIFNETMASK) && defined(ifr_netmask) |
161933c7 KS |
3598 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3599 | { | |
3600 | any++; | |
3601 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); | |
3602 | } | |
3603 | #endif | |
3604 | res = Fcons (elt, res); | |
3605 | ||
3606 | elt = Qnil; | |
559c53b3 | 3607 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
161933c7 KS |
3608 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3609 | { | |
3610 | any++; | |
3611 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3612 | } | |
3613 | #endif | |
3614 | res = Fcons (elt, res); | |
3615 | ||
3616 | elt = Qnil; | |
559c53b3 | 3617 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) |
161933c7 KS |
3618 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3619 | { | |
3620 | any++; | |
3621 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3622 | } | |
3623 | #endif | |
3624 | res = Fcons (elt, res); | |
3625 | ||
3626 | close (s); | |
3627 | ||
3628 | return any ? res : Qnil; | |
3629 | } | |
3630 | #endif | |
3631 | #endif /* HAVE_SOCKETS */ | |
3632 | ||
04391069 RS |
3633 | /* Turn off input and output for process PROC. */ |
3634 | ||
6b53bb85 | 3635 | void |
d0d6b7c5 JB |
3636 | deactivate_process (proc) |
3637 | Lisp_Object proc; | |
3638 | { | |
3639 | register int inchannel, outchannel; | |
3640 | register struct Lisp_Process *p = XPROCESS (proc); | |
3641 | ||
a9f2c884 RS |
3642 | inchannel = XINT (p->infd); |
3643 | outchannel = XINT (p->outfd); | |
d0d6b7c5 | 3644 | |
2d942bfa KS |
3645 | #ifdef ADAPTIVE_READ_BUFFERING |
3646 | if (XINT (p->read_output_delay) > 0) | |
3647 | { | |
3648 | if (--process_output_delay_count < 0) | |
3649 | process_output_delay_count = 0; | |
3650 | XSETINT (p->read_output_delay, 0); | |
3651 | p->read_output_skip = Qnil; | |
3652 | } | |
3653 | #endif | |
f3d9532b | 3654 | |
a9f2c884 | 3655 | if (inchannel >= 0) |
d0d6b7c5 JB |
3656 | { |
3657 | /* Beware SIGCHLD hereabouts. */ | |
3658 | flush_pending_output (inchannel); | |
3659 | #ifdef VMS | |
3660 | { | |
3661 | VMS_PROC_STUFF *get_vms_process_pointer (), *vs; | |
3662 | sys$dassgn (outchannel); | |
c6c6865d | 3663 | vs = get_vms_process_pointer (p->pid); |
d0d6b7c5 JB |
3664 | if (vs) |
3665 | give_back_vms_process_stuff (vs); | |
3666 | } | |
3667 | #else | |
68c45bf0 | 3668 | emacs_close (inchannel); |
a9f2c884 | 3669 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3670 | emacs_close (outchannel); |
d0d6b7c5 JB |
3671 | #endif |
3672 | ||
1d056e64 KH |
3673 | XSETINT (p->infd, -1); |
3674 | XSETINT (p->outfd, -1); | |
e690ca94 KS |
3675 | #ifdef DATAGRAM_SOCKETS |
3676 | if (DATAGRAM_CHAN_P (inchannel)) | |
3677 | { | |
3678 | xfree (datagram_address[inchannel].sa); | |
3679 | datagram_address[inchannel].sa = 0; | |
3680 | datagram_address[inchannel].len = 0; | |
3681 | } | |
3682 | #endif | |
d0d6b7c5 JB |
3683 | chan_process[inchannel] = Qnil; |
3684 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3685 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3686 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3687 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3688 | { | |
3689 | FD_CLR (inchannel, &connect_wait_mask); | |
3690 | if (--num_pending_connects < 0) | |
3691 | abort (); | |
3692 | } | |
bad49fc7 | 3693 | #endif |
7d0e672e RS |
3694 | if (inchannel == max_process_desc) |
3695 | { | |
3696 | int i; | |
3697 | /* We just closed the highest-numbered process input descriptor, | |
3698 | so recompute the highest-numbered one now. */ | |
3699 | max_process_desc = 0; | |
3700 | for (i = 0; i < MAXDESC; i++) | |
3701 | if (!NILP (chan_process[i])) | |
3702 | max_process_desc = i; | |
3703 | } | |
d0d6b7c5 JB |
3704 | } |
3705 | } | |
3706 | ||
3707 | /* Close all descriptors currently in use for communication | |
3708 | with subprocess. This is used in a newly-forked subprocess | |
3709 | to get rid of irrelevant descriptors. */ | |
3710 | ||
6b53bb85 | 3711 | void |
d0d6b7c5 JB |
3712 | close_process_descs () |
3713 | { | |
e98d950b | 3714 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
3715 | int i; |
3716 | for (i = 0; i < MAXDESC; i++) | |
3717 | { | |
3718 | Lisp_Object process; | |
3719 | process = chan_process[i]; | |
3720 | if (!NILP (process)) | |
3721 | { | |
a9f2c884 RS |
3722 | int in = XINT (XPROCESS (process)->infd); |
3723 | int out = XINT (XPROCESS (process)->outfd); | |
3724 | if (in >= 0) | |
68c45bf0 | 3725 | emacs_close (in); |
a9f2c884 | 3726 | if (out >= 0 && in != out) |
68c45bf0 | 3727 | emacs_close (out); |
d0d6b7c5 JB |
3728 | } |
3729 | } | |
e98d950b | 3730 | #endif |
d0d6b7c5 JB |
3731 | } |
3732 | \f | |
3733 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3734 | 0, 4, 0, |
fdb82f93 PJ |
3735 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3736 | It is read into the process' buffers or given to their filter functions. | |
3737 | Non-nil arg PROCESS means do not return until some output has been received | |
3738 | from PROCESS. | |
3739 | Non-nil second arg TIMEOUT and third arg TIMEOUT-MSECS are number of | |
3740 | seconds and microseconds to wait; return after that much time whether | |
3741 | or not there is input. | |
107ed38d KS |
3742 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3743 | from PROCESS, suspending reading output from other processes. | |
3744 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
fdb82f93 | 3745 | Return non-nil iff we received any output before the timeout expired. */) |
107ed38d KS |
3746 | (process, timeout, timeout_msecs, just_this_one) |
3747 | register Lisp_Object process, timeout, timeout_msecs, just_this_one; | |
d0d6b7c5 JB |
3748 | { |
3749 | int seconds; | |
3750 | int useconds; | |
3751 | ||
0748d150 | 3752 | if (! NILP (process)) |
b7826503 | 3753 | CHECK_PROCESS (process); |
107ed38d KS |
3754 | else |
3755 | just_this_one = Qnil; | |
0748d150 | 3756 | |
d0d6b7c5 JB |
3757 | if (! NILP (timeout_msecs)) |
3758 | { | |
b7826503 | 3759 | CHECK_NUMBER (timeout_msecs); |
d0d6b7c5 | 3760 | useconds = XINT (timeout_msecs); |
bcd69aea | 3761 | if (!INTEGERP (timeout)) |
1d056e64 | 3762 | XSETINT (timeout, 0); |
d0d6b7c5 JB |
3763 | |
3764 | { | |
3765 | int carry = useconds / 1000000; | |
3766 | ||
3767 | XSETINT (timeout, XINT (timeout) + carry); | |
3768 | useconds -= carry * 1000000; | |
3769 | ||
3770 | /* I think this clause is necessary because C doesn't | |
3771 | guarantee a particular rounding direction for negative | |
3772 | integers. */ | |
3773 | if (useconds < 0) | |
3774 | { | |
3775 | XSETINT (timeout, XINT (timeout) - 1); | |
3776 | useconds += 1000000; | |
3777 | } | |
3778 | } | |
3779 | } | |
de946e5a RS |
3780 | else |
3781 | useconds = 0; | |
d0d6b7c5 JB |
3782 | |
3783 | if (! NILP (timeout)) | |
3784 | { | |
b7826503 | 3785 | CHECK_NUMBER (timeout); |
d0d6b7c5 | 3786 | seconds = XINT (timeout); |
ada9a4fd | 3787 | if (seconds < 0 || (seconds == 0 && useconds == 0)) |
d0d6b7c5 JB |
3788 | seconds = -1; |
3789 | } | |
3790 | else | |
26d7389d | 3791 | seconds = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
3792 | |
3793 | return | |
214d6069 KS |
3794 | (wait_reading_process_output (seconds, useconds, 0, 0, |
3795 | Qnil, | |
3796 | !NILP (process) ? XPROCESS (process) : NULL, | |
3797 | NILP (just_this_one) ? 0 : | |
3798 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3799 | ? Qt : Qnil); |
3800 | } | |
3801 | ||
e690ca94 KS |
3802 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3803 | ||
3804 | static int connect_counter = 0; | |
3805 | ||
3806 | static void | |
3807 | server_accept_connection (server, channel) | |
3808 | Lisp_Object server; | |
3809 | int channel; | |
3810 | { | |
3811 | Lisp_Object proc, caller, name, buffer; | |
3812 | Lisp_Object contact, host, service; | |
3813 | struct Lisp_Process *ps= XPROCESS (server); | |
3814 | struct Lisp_Process *p; | |
3815 | int s; | |
3816 | union u_sockaddr { | |
3817 | struct sockaddr sa; | |
3818 | struct sockaddr_in in; | |
3819 | #ifdef HAVE_LOCAL_SOCKETS | |
3820 | struct sockaddr_un un; | |
3821 | #endif | |
3822 | } saddr; | |
3823 | int len = sizeof saddr; | |
3824 | ||
3825 | s = accept (channel, &saddr.sa, &len); | |
3826 | ||
3827 | if (s < 0) | |
3828 | { | |
3829 | int code = errno; | |
3830 | ||
3831 | if (code == EAGAIN) | |
3832 | return; | |
3833 | #ifdef EWOULDBLOCK | |
3834 | if (code == EWOULDBLOCK) | |
3835 | return; | |
3836 | #endif | |
3837 | ||
3838 | if (!NILP (ps->log)) | |
3839 | call3 (ps->log, server, Qnil, | |
3840 | concat3 (build_string ("accept failed with code"), | |
3841 | Fnumber_to_string (make_number (code)), | |
3842 | build_string ("\n"))); | |
3843 | return; | |
3844 | } | |
3845 | ||
3846 | connect_counter++; | |
3847 | ||
3848 | /* Setup a new process to handle the connection. */ | |
3849 | ||
3850 | /* Generate a unique identification of the caller, and build contact | |
3851 | information for this process. */ | |
3852 | host = Qt; | |
3853 | service = Qnil; | |
3854 | switch (saddr.sa.sa_family) | |
3855 | { | |
3856 | case AF_INET: | |
3857 | { | |
3858 | Lisp_Object args[5]; | |
3859 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
3860 | args[0] = build_string ("%d.%d.%d.%d"); | |
3861 | args[1] = make_number (*ip++); | |
3862 | args[2] = make_number (*ip++); | |
3863 | args[3] = make_number (*ip++); | |
3864 | args[4] = make_number (*ip++); | |
3865 | host = Fformat (5, args); | |
3866 | service = make_number (ntohs (saddr.in.sin_port)); | |
3867 | ||
3868 | args[0] = build_string (" <%s:%d>"); | |
3869 | args[1] = host; | |
3870 | args[2] = service; | |
3871 | caller = Fformat (3, args); | |
3872 | } | |
3873 | break; | |
3874 | ||
3875 | #ifdef HAVE_LOCAL_SOCKETS | |
3876 | case AF_LOCAL: | |
3877 | #endif | |
3878 | default: | |
3879 | caller = Fnumber_to_string (make_number (connect_counter)); | |
3880 | caller = concat3 (build_string (" <*"), caller, build_string ("*>")); | |
3881 | break; | |
3882 | } | |
3883 | ||
3884 | /* Create a new buffer name for this process if it doesn't have a | |
3885 | filter. The new buffer name is based on the buffer name or | |
3886 | process name of the server process concatenated with the caller | |
3887 | identification. */ | |
3888 | ||
3889 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
3890 | buffer = Qnil; | |
3891 | else | |
3892 | { | |
3893 | buffer = ps->buffer; | |
3894 | if (!NILP (buffer)) | |
3895 | buffer = Fbuffer_name (buffer); | |
3896 | else | |
3897 | buffer = ps->name; | |
3898 | if (!NILP (buffer)) | |
3899 | { | |
3900 | buffer = concat2 (buffer, caller); | |
3901 | buffer = Fget_buffer_create (buffer); | |
3902 | } | |
3903 | } | |
3904 | ||
3905 | /* Generate a unique name for the new server process. Combine the | |
3906 | server process name with the caller identification. */ | |
3907 | ||
3908 | name = concat2 (ps->name, caller); | |
3909 | proc = make_process (name); | |
3910 | ||
3911 | chan_process[s] = proc; | |
3912 | ||
3913 | #ifdef O_NONBLOCK | |
3914 | fcntl (s, F_SETFL, O_NONBLOCK); | |
3915 | #else | |
3916 | #ifdef O_NDELAY | |
3917 | fcntl (s, F_SETFL, O_NDELAY); | |
3918 | #endif | |
3919 | #endif | |
3920 | ||
3921 | p = XPROCESS (proc); | |
3922 | ||
3923 | /* Build new contact information for this setup. */ | |
3924 | contact = Fcopy_sequence (ps->childp); | |
3925 | contact = Fplist_put (contact, QCserver, Qnil); | |
3926 | contact = Fplist_put (contact, QChost, host); | |
3927 | if (!NILP (service)) | |
3928 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 3929 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
3930 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
3931 | #ifdef HAVE_GETSOCKNAME | |
3932 | len = sizeof saddr; | |
2185db04 | 3933 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 3934 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
3935 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
3936 | #endif | |
3937 | ||
3938 | p->childp = contact; | |
faa7db08 | 3939 | p->plist = Fcopy_sequence (ps->plist); |
ac4a7584 | 3940 | |
e690ca94 KS |
3941 | p->buffer = buffer; |
3942 | p->sentinel = ps->sentinel; | |
3943 | p->filter = ps->filter; | |
3944 | p->command = Qnil; | |
3945 | p->pid = Qnil; | |
3946 | XSETINT (p->infd, s); | |
3947 | XSETINT (p->outfd, s); | |
3948 | p->status = Qrun; | |
3949 | ||
3950 | /* Client processes for accepted connections are not stopped initially. */ | |
3951 | if (!EQ (p->filter, Qt)) | |
3952 | { | |
3953 | FD_SET (s, &input_wait_mask); | |
3954 | FD_SET (s, &non_keyboard_wait_mask); | |
3955 | } | |
3956 | ||
3957 | if (s > max_process_desc) | |
3958 | max_process_desc = s; | |
3959 | ||
177c0ea7 | 3960 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
3961 | This seems to be the proper thing to do, as the coding system |
3962 | of the new process should reflect the settings at the time the | |
3963 | server socket was opened; not the current settings. */ | |
3964 | ||
3965 | p->decode_coding_system = ps->decode_coding_system; | |
3966 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 3967 | setup_process_coding_systems (proc); |
e690ca94 KS |
3968 | |
3969 | p->decoding_buf = make_uninit_string (0); | |
3970 | p->decoding_carryover = make_number (0); | |
3971 | p->encoding_buf = make_uninit_string (0); | |
3972 | p->encoding_carryover = make_number (0); | |
3973 | ||
3974 | p->inherit_coding_system_flag | |
3975 | = (NILP (buffer) ? Qnil : ps->inherit_coding_system_flag); | |
3976 | ||
3977 | if (!NILP (ps->log)) | |
3978 | call3 (ps->log, server, proc, | |
3979 | concat3 (build_string ("accept from "), | |
3980 | (STRINGP (host) ? host : build_string ("-")), | |
3981 | build_string ("\n"))); | |
3982 | ||
bed9664a | 3983 | if (!NILP (p->sentinel)) |
177c0ea7 | 3984 | exec_sentinel (proc, |
e690ca94 KS |
3985 | concat3 (build_string ("open from "), |
3986 | (STRINGP (host) ? host : build_string ("-")), | |
3987 | build_string ("\n"))); | |
3988 | } | |
3989 | ||
d0d6b7c5 JB |
3990 | /* This variable is different from waiting_for_input in keyboard.c. |
3991 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 3992 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
3993 | for user-input when that process-filter was called. |
3994 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
3995 | lisp code is being evalled. |
3996 | This is also used in record_asynch_buffer_change. | |
3997 | For that purpose, this must be 0 | |
214d6069 | 3998 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
3999 | static int waiting_for_user_input_p; |
4000 | ||
c573ae8e | 4001 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4002 | static void |
214d6069 | 4003 | wait_reading_process_output_1 () |
c573ae8e RS |
4004 | { |
4005 | } | |
4006 | ||
d0d6b7c5 JB |
4007 | /* Read and dispose of subprocess output while waiting for timeout to |
4008 | elapse and/or keyboard input to be available. | |
4009 | ||
de6fd4b9 | 4010 | TIME_LIMIT is: |
d0d6b7c5 JB |
4011 | timeout in seconds, or |
4012 | zero for no limit, or | |
4013 | -1 means gobble data immediately available but don't wait for any. | |
4014 | ||
de6fd4b9 RS |
4015 | MICROSECS is: |
4016 | an additional duration to wait, measured in microseconds. | |
4017 | If this is nonzero and time_limit is 0, then the timeout | |
4018 | consists of MICROSECS only. | |
6e4f3667 | 4019 | |
de6fd4b9 | 4020 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4021 | 0 to ignore keyboard input, or |
4022 | 1 to return when input is available, or | |
84aa3ace | 4023 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4024 | the quit handler, or |
b89a415a KS |
4025 | |
4026 | DO_DISPLAY != 0 means redisplay should be done to show subprocess | |
107ed38d | 4027 | output that arrives. |
d0d6b7c5 | 4028 | |
b89a415a KS |
4029 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4030 | (and gobble terminal input into the buffer if any arrives). | |
4031 | ||
4032 | If WAIT_PROC is specified, wait until something arrives from that | |
4033 | process. The return value is true iff we read some input from | |
4034 | that process. | |
4035 | ||
4036 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4037 | (suspending output from other processes). A negative value | |
4038 | means don't run any timers either. | |
4039 | ||
4040 | If WAIT_PROC is specified, then the function returns true iff we | |
4041 | received input from that process before the timeout elapsed. | |
eb8c3be9 | 4042 | Otherwise, return true iff we received input from any process. */ |
d0d6b7c5 | 4043 | |
dfcf069d | 4044 | int |
214d6069 KS |
4045 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
4046 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
4047 | int time_limit, microsecs, read_kbd, do_display; |
4048 | Lisp_Object wait_for_cell; | |
4049 | struct Lisp_Process *wait_proc; | |
4050 | int just_wait_proc; | |
d0d6b7c5 | 4051 | { |
41d03b9a | 4052 | register int channel, nfds; |
855448dc | 4053 | SELECT_TYPE Available; |
bad49fc7 | 4054 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4055 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4056 | int check_connect; |
4057 | #endif | |
4058 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4059 | int xerrno; |
4060 | Lisp_Object proc; | |
41d03b9a | 4061 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4062 | int wait_channel = -1; |
d0d6b7c5 | 4063 | int got_some_input = 0; |
f3fbd155 KR |
4064 | /* Either nil or a cons cell, the car of which is of interest and |
4065 | may be changed outside of this routine. */ | |
855448dc | 4066 | int saved_waiting_for_user_input_p = waiting_for_user_input_p; |
d0d6b7c5 JB |
4067 | |
4068 | FD_ZERO (&Available); | |
bad49fc7 | 4069 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4070 | FD_ZERO (&Connecting); |
bad49fc7 | 4071 | #endif |
d0d6b7c5 | 4072 | |
b89a415a KS |
4073 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4074 | if (wait_proc != NULL) | |
4075 | wait_channel = XINT (wait_proc->infd); | |
d0d6b7c5 | 4076 | |
b89a415a | 4077 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4078 | |
4079 | /* Since we may need to wait several times, | |
4080 | compute the absolute time to return at. */ | |
4081 | if (time_limit || microsecs) | |
4082 | { | |
4083 | EMACS_GET_TIME (end_time); | |
4084 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4085 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4086 | } | |
19310311 | 4087 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4088 | /* AlainF 5-Jul-1996 |
4089 | HP-UX 10.10 seem to have problems with signals coming in | |
4090 | Causes "poll: interrupted system call" messages when Emacs is run | |
4091 | in an X window | |
75eb23f1 RS |
4092 | Turn off periodic alarms (in case they are in use), |
4093 | and then turn off any other atimers. */ | |
4094 | stop_polling (); | |
30904ab7 | 4095 | turn_on_atimers (0); |
19310311 | 4096 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
d0d6b7c5 | 4097 | |
d0d6b7c5 JB |
4098 | while (1) |
4099 | { | |
c0239a0b RS |
4100 | int timeout_reduced_for_timers = 0; |
4101 | ||
d0d6b7c5 JB |
4102 | /* If calling from keyboard input, do not quit |
4103 | since we want to return C-g as an input character. | |
4104 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4105 | if (read_kbd >= 0) |
d0d6b7c5 | 4106 | QUIT; |
43ff45a0 SM |
4107 | #ifdef SYNC_INPUT |
4108 | else if (interrupt_input_pending) | |
4109 | handle_async_input (); | |
4110 | #endif | |
d0d6b7c5 | 4111 | |
889255b4 | 4112 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4113 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4114 | break; |
4115 | ||
d0d6b7c5 JB |
4116 | /* Compute time from now till when time limit is up */ |
4117 | /* Exit if already run out */ | |
4118 | if (time_limit == -1) | |
4119 | { | |
4120 | /* -1 specified for timeout means | |
4121 | gobble output available now | |
4122 | but don't wait at all. */ | |
4123 | ||
4124 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4125 | } | |
4126 | else if (time_limit || microsecs) | |
4127 | { | |
4128 | EMACS_GET_TIME (timeout); | |
4129 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4130 | if (EMACS_TIME_NEG_P (timeout)) | |
4131 | break; | |
4132 | } | |
4133 | else | |
4134 | { | |
4135 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4136 | } | |
4137 | ||
f854a00b RS |
4138 | /* Normally we run timers here. |
4139 | But not if wait_for_cell; in those cases, | |
4140 | the wait is supposed to be short, | |
4141 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4142 | if (NILP (wait_for_cell) |
b89a415a | 4143 | && just_wait_proc >= 0) |
fb4c3627 | 4144 | { |
c0239a0b | 4145 | EMACS_TIME timer_delay; |
c573ae8e | 4146 | |
9baacf76 | 4147 | do |
c573ae8e | 4148 | { |
9baacf76 | 4149 | int old_timers_run = timers_run; |
c88164fe | 4150 | struct buffer *old_buffer = current_buffer; |
177c0ea7 | 4151 | |
9baacf76 | 4152 | timer_delay = timer_check (1); |
a2fab450 GM |
4153 | |
4154 | /* If a timer has run, this might have changed buffers | |
4155 | an alike. Make read_key_sequence aware of that. */ | |
4156 | if (timers_run != old_timers_run | |
c88164fe | 4157 | && old_buffer != current_buffer |
a2fab450 GM |
4158 | && waiting_for_user_input_p == -1) |
4159 | record_asynch_buffer_change (); | |
177c0ea7 | 4160 | |
9baacf76 GM |
4161 | if (timers_run != old_timers_run && do_display) |
4162 | /* We must retry, since a timer may have requeued itself | |
4163 | and that could alter the time_delay. */ | |
3007ebfb | 4164 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4165 | else |
4166 | break; | |
c573ae8e | 4167 | } |
9baacf76 | 4168 | while (!detect_input_pending ()); |
c573ae8e | 4169 | |
69645afc | 4170 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4171 | if (read_kbd != 0 |
69645afc RS |
4172 | && requeued_events_pending_p ()) |
4173 | break; | |
4174 | ||
c0239a0b | 4175 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4176 | { |
4177 | EMACS_TIME difference; | |
4178 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4179 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4180 | { |
4181 | timeout = timer_delay; | |
4182 | timeout_reduced_for_timers = 1; | |
4183 | } | |
fb4c3627 | 4184 | } |
4abca5e7 RS |
4185 | /* If time_limit is -1, we are not going to wait at all. */ |
4186 | else if (time_limit != -1) | |
c573ae8e RS |
4187 | { |
4188 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4189 | wait_reading_process_output_1 (); |
c573ae8e | 4190 | } |
fb4c3627 RS |
4191 | } |
4192 | ||
90ab1a81 JB |
4193 | /* Cause C-g and alarm signals to take immediate action, |
4194 | and cause input available signals to zero out timeout. | |
4195 | ||
4196 | It is important that we do this before checking for process | |
4197 | activity. If we get a SIGCHLD after the explicit checks for | |
4198 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4199 | if (read_kbd < 0) |
90ab1a81 JB |
4200 | set_waiting_for_input (&timeout); |
4201 | ||
6be429b1 JB |
4202 | /* If status of something has changed, and no input is |
4203 | available, notify the user of the change right away. After | |
4204 | this explicit check, we'll let the SIGCHLD handler zap | |
4205 | timeout to get our attention. */ | |
4206 | if (update_tick != process_tick && do_display) | |
4207 | { | |
bad49fc7 KS |
4208 | SELECT_TYPE Atemp; |
4209 | #ifdef NON_BLOCKING_CONNECT | |
4210 | SELECT_TYPE Ctemp; | |
4211 | #endif | |
dd2a17ab | 4212 | |
6be429b1 | 4213 | Atemp = input_wait_mask; |
e082ac9d ST |
4214 | #if 0 |
4215 | /* On Mac OS X 10.0, the SELECT system call always says input is | |
e0f712ba | 4216 | present (for reading) at stdin, even when none is. This |
aa87aafc | 4217 | causes the call to SELECT below to return 1 and |
e0f712ba | 4218 | status_notify not to be called. As a result output of |
39b1da20 | 4219 | subprocesses are incorrectly discarded. |
e082ac9d | 4220 | */ |
e0f712ba AC |
4221 | FD_CLR (0, &Atemp); |
4222 | #endif | |
bad49fc7 KS |
4223 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4224 | ||
6be429b1 | 4225 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
0c9960e9 | 4226 | if ((select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4227 | &Atemp, |
bad49fc7 | 4228 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4229 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4230 | #else |
4231 | (SELECT_TYPE *)0, | |
4232 | #endif | |
dd2a17ab | 4233 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4234 | <= 0)) |
90ab1a81 JB |
4235 | { |
4236 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4237 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4238 | clear_waiting_for_input (); |
ff6daed3 | 4239 | status_notify (NULL); |
90ab1a81 | 4240 | } |
6be429b1 JB |
4241 | } |
4242 | ||
dd2a17ab KS |
4243 | /* Don't wait for output from a non-running process. Just |
4244 | read whatever data has already been received. */ | |
6be429b1 JB |
4245 | if (wait_proc != 0 && !NILP (wait_proc->raw_status_low)) |
4246 | update_status (wait_proc); | |
4247 | if (wait_proc != 0 | |
dd2a17ab KS |
4248 | && ! EQ (wait_proc->status, Qrun) |
4249 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4250 | { |
215b45e9 | 4251 | int nread, total_nread = 0; |
7ce63188 | 4252 | |
9aa2a7f4 | 4253 | clear_waiting_for_input (); |
7ce63188 RS |
4254 | XSETPROCESS (proc, wait_proc); |
4255 | ||
4256 | /* Read data from the process, until we exhaust it. */ | |
e1b37c34 | 4257 | while (XINT (wait_proc->infd) >= 0) |
215b45e9 | 4258 | { |
e1b37c34 GM |
4259 | nread = read_process_output (proc, XINT (wait_proc->infd)); |
4260 | ||
4261 | if (nread == 0) | |
4262 | break; | |
4263 | ||
177c0ea7 | 4264 | if (0 < nread) |
215b45e9 RS |
4265 | total_nread += nread; |
4266 | #ifdef EIO | |
4267 | else if (nread == -1 && EIO == errno) | |
4268 | break; | |
e1b37c34 GM |
4269 | #endif |
4270 | #ifdef EAGAIN | |
4271 | else if (nread == -1 && EAGAIN == errno) | |
4272 | break; | |
4273 | #endif | |
4274 | #ifdef EWOULDBLOCK | |
4275 | else if (nread == -1 && EWOULDBLOCK == errno) | |
4276 | break; | |
215b45e9 RS |
4277 | #endif |
4278 | } | |
7ce63188 | 4279 | if (total_nread > 0 && do_display) |
3007ebfb | 4280 | redisplay_preserve_echo_area (10); |
7ce63188 | 4281 | |
9aa2a7f4 JB |
4282 | break; |
4283 | } | |
6be429b1 | 4284 | |
d0d6b7c5 JB |
4285 | /* Wait till there is something to do */ |
4286 | ||
b89a415a | 4287 | if (wait_proc && just_wait_proc) |
107ed38d | 4288 | { |
b89a415a KS |
4289 | if (XINT (wait_proc->infd) < 0) /* Terminated */ |
4290 | break; | |
107ed38d | 4291 | FD_SET (XINT (wait_proc->infd), &Available); |
bad49fc7 KS |
4292 | check_delay = 0; |
4293 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4294 | } |
4295 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4296 | { |
4297 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4298 | check_delay = 0; |
4299 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4300 | } |
a69281ff | 4301 | else |
dd2a17ab | 4302 | { |
b89a415a | 4303 | if (! read_kbd) |
dd2a17ab KS |
4304 | Available = non_keyboard_wait_mask; |
4305 | else | |
4306 | Available = input_wait_mask; | |
bad49fc7 | 4307 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
3af55251 | 4308 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4309 | } |
d0d6b7c5 | 4310 | |
ff11dfa1 | 4311 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4312 | redisplay now, before we start to wait. There is a race |
4313 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4314 | and indicates that a frame is trashed, the select may block |
4315 | displaying a trashed screen. */ | |
5164ee8e | 4316 | if (frame_garbaged && do_display) |
7286affd RS |
4317 | { |
4318 | clear_waiting_for_input (); | |
3007ebfb | 4319 | redisplay_preserve_echo_area (11); |
b89a415a | 4320 | if (read_kbd < 0) |
7efe788e | 4321 | set_waiting_for_input (&timeout); |
7286affd | 4322 | } |
ffd56f97 | 4323 | |
dd2a17ab | 4324 | no_avail = 0; |
b89a415a | 4325 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4326 | { |
4327 | nfds = 0; | |
dd2a17ab | 4328 | no_avail = 1; |
0a65b032 RS |
4329 | } |
4330 | else | |
dd2a17ab | 4331 | { |
bad49fc7 | 4332 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4333 | if (check_connect) |
4334 | Connecting = connect_wait_mask; | |
bad49fc7 | 4335 | #endif |
2d942bfa KS |
4336 | |
4337 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a KS |
4338 | /* Set the timeout for adaptive read buffering if any |
4339 | process has non-nil read_output_skip and non-zero | |
4340 | read_output_delay, and we are not reading output for a | |
4341 | specific wait_channel. It is not executed if | |
4342 | Vprocess_adaptive_read_buffering is nil. */ | |
2d942bfa KS |
4343 | if (process_output_skip && check_delay > 0) |
4344 | { | |
4345 | int usecs = EMACS_USECS (timeout); | |
4346 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4347 | usecs = READ_OUTPUT_DELAY_MAX; | |
4348 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4349 | { | |
4350 | proc = chan_process[channel]; | |
4351 | if (NILP (proc)) | |
4352 | continue; | |
db853b7a KS |
4353 | /* Find minimum non-zero read_output_delay among the |
4354 | processes with non-nil read_output_skip. */ | |
9076a823 | 4355 | if (XINT (XPROCESS (proc)->read_output_delay) > 0) |
2d942bfa KS |
4356 | { |
4357 | check_delay--; | |
4358 | if (NILP (XPROCESS (proc)->read_output_skip)) | |
4359 | continue; | |
4360 | FD_CLR (channel, &Available); | |
4361 | XPROCESS (proc)->read_output_skip = Qnil; | |
4362 | if (XINT (XPROCESS (proc)->read_output_delay) < usecs) | |
4363 | usecs = XINT (XPROCESS (proc)->read_output_delay); | |
4364 | } | |
4365 | } | |
4366 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4367 | process_output_skip = 0; | |
4368 | } | |
4369 | #endif | |
4370 | ||
dd2a17ab | 4371 | nfds = select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4372 | &Available, |
bad49fc7 | 4373 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4374 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4375 | #else |
4376 | (SELECT_TYPE *)0, | |
4377 | #endif | |
dd2a17ab KS |
4378 | (SELECT_TYPE *)0, &timeout); |
4379 | } | |
6720a7fb | 4380 | |
d0d6b7c5 JB |
4381 | xerrno = errno; |
4382 | ||
4383 | /* Make C-g and alarm signals set flags again */ | |
4384 | clear_waiting_for_input (); | |
4385 | ||
4386 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4387 | do_pending_window_change (0); |
d0d6b7c5 | 4388 | |
c0239a0b RS |
4389 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4390 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4391 | break; |
4392 | if (nfds < 0) | |
4393 | { | |
4394 | if (xerrno == EINTR) | |
dd2a17ab | 4395 | no_avail = 1; |
b0310da4 JB |
4396 | #ifdef ultrix |
4397 | /* Ultrix select seems to return ENOMEM when it is | |
4398 | interrupted. Treat it just like EINTR. Bleah. Note | |
4399 | that we want to test for the "ultrix" CPP symbol, not | |
4400 | "__ultrix__"; the latter is only defined under GCC, but | |
4401 | not by DEC's bundled CC. -JimB */ | |
8058415c | 4402 | else if (xerrno == ENOMEM) |
dd2a17ab | 4403 | no_avail = 1; |
8058415c | 4404 | #endif |
d0d6b7c5 JB |
4405 | #ifdef ALLIANT |
4406 | /* This happens for no known reason on ALLIANT. | |
4407 | I am guessing that this is the right response. -- RMS. */ | |
4408 | else if (xerrno == EFAULT) | |
dd2a17ab | 4409 | no_avail = 1; |
d0d6b7c5 JB |
4410 | #endif |
4411 | else if (xerrno == EBADF) | |
4412 | { | |
4413 | #ifdef AIX | |
4414 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4415 | the child's closure of the pts gives the parent a SIGHUP, and | |
4416 | the ptc file descriptor is automatically closed, | |
4417 | yielding EBADF here or at select() call above. | |
4418 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4419 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4420 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4421 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4422 | #else |
4423 | abort (); | |
4424 | #endif | |
4425 | } | |
4426 | else | |
68c45bf0 | 4427 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4428 | } |
dd2a17ab KS |
4429 | |
4430 | if (no_avail) | |
4431 | { | |
4432 | FD_ZERO (&Available); | |
bad49fc7 | 4433 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4434 | } |
4435 | ||
26ec91de | 4436 | #if defined(sun) && !defined(USG5_4) |
dd2a17ab KS |
4437 | if (nfds > 0 && keyboard_bit_set (&Available) |
4438 | && interrupt_input) | |
e0109153 JB |
4439 | /* System sometimes fails to deliver SIGIO. |
4440 | ||
4441 | David J. Mackenzie says that Emacs doesn't compile under | |
4442 | Solaris if this code is enabled, thus the USG5_4 in the CPP | |
4443 | conditional. "I haven't noticed any ill effects so far. | |
4444 | If you find a Solaris expert somewhere, they might know | |
4445 | better." */ | |
d0d6b7c5 JB |
4446 | kill (getpid (), SIGIO); |
4447 | #endif | |
4448 | ||
5d5beb62 RS |
4449 | #if 0 /* When polling is used, interrupt_input is 0, |
4450 | so get_input_pending should read the input. | |
4451 | So this should not be needed. */ | |
4452 | /* If we are using polling for input, | |
4453 | and we see input available, make it get read now. | |
4454 | Otherwise it might not actually get read for a second. | |
214d6069 | 4455 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4456 | it might never get read at all if we don't spend much time |
214d6069 | 4457 | outside of wait_reading_process_output. */ |
b89a415a | 4458 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4459 | && keyboard_bit_set (&Available) |
4460 | && input_polling_used ()) | |
4461 | kill (getpid (), SIGALRM); | |
4462 | #endif | |
4463 | ||
d0d6b7c5 JB |
4464 | /* Check for keyboard input */ |
4465 | /* If there is any, return immediately | |
4466 | to give it higher priority than subprocesses */ | |
4467 | ||
b89a415a | 4468 | if (read_kbd != 0) |
6ed6233b | 4469 | { |
a2fab450 | 4470 | int old_timers_run = timers_run; |
c88164fe | 4471 | struct buffer *old_buffer = current_buffer; |
a2fab450 | 4472 | int leave = 0; |
177c0ea7 | 4473 | |
5d6c2aa3 | 4474 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4475 | { |
4476 | swallow_events (do_display); | |
4477 | if (detect_input_pending_run_timers (do_display)) | |
4478 | leave = 1; | |
4479 | } | |
6ed6233b | 4480 | |
a2fab450 GM |
4481 | /* If a timer has run, this might have changed buffers |
4482 | an alike. Make read_key_sequence aware of that. */ | |
4483 | if (timers_run != old_timers_run | |
c88164fe GM |
4484 | && waiting_for_user_input_p == -1 |
4485 | && old_buffer != current_buffer) | |
a2fab450 GM |
4486 | record_asynch_buffer_change (); |
4487 | ||
4488 | if (leave) | |
4489 | break; | |
177c0ea7 JB |
4490 | } |
4491 | ||
69645afc | 4492 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4493 | if (read_kbd != 0 |
69645afc RS |
4494 | && requeued_events_pending_p ()) |
4495 | break; | |
4496 | ||
77e1b3d4 RS |
4497 | /* If we are not checking for keyboard input now, |
4498 | do process events (but don't run any timers). | |
4499 | This is so that X events will be processed. | |
0c9960e9 | 4500 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4501 | That would causes delays in pasting selections, for example. |
4502 | ||
4503 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4504 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4505 | { |
4506 | swallow_events (do_display); | |
0c9960e9 | 4507 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4508 | if (detect_input_pending ()) |
4509 | break; | |
5d5beb62 | 4510 | #endif |
0c9960e9 | 4511 | } |
f854a00b | 4512 | |
84aa3ace | 4513 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4514 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4515 | break; |
4516 | ||
4746118a | 4517 | #ifdef SIGIO |
5d5beb62 | 4518 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4519 | go read it. This can happen with X on BSD after logging out. |
4520 | In that case, there really is no input and no SIGIO, | |
4521 | but select says there is input. */ | |
4522 | ||
b89a415a | 4523 | if (read_kbd && interrupt_input |
2601f59e | 4524 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4525 | kill (getpid (), SIGIO); |
4746118a | 4526 | #endif |
d0d6b7c5 | 4527 | |
d0d6b7c5 JB |
4528 | if (! wait_proc) |
4529 | got_some_input |= nfds > 0; | |
4530 | ||
32676c08 JB |
4531 | /* If checking input just got us a size-change event from X, |
4532 | obey it now if we should. */ | |
b89a415a | 4533 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4534 | do_pending_window_change (0); |
32676c08 | 4535 | |
a9f2c884 | 4536 | /* Check for data from a process. */ |
dd2a17ab KS |
4537 | if (no_avail || nfds == 0) |
4538 | continue; | |
4539 | ||
a9f2c884 RS |
4540 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4541 | but this is safer in the short run. */ | |
a69281ff | 4542 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4543 | { |
a69281ff RS |
4544 | if (FD_ISSET (channel, &Available) |
4545 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4546 | { |
4547 | int nread; | |
4548 | ||
4549 | /* If waiting for this channel, arrange to return as | |
4550 | soon as no more input to be processed. No more | |
4551 | waiting. */ | |
4552 | if (wait_channel == channel) | |
4553 | { | |
a9f2c884 | 4554 | wait_channel = -1; |
d0d6b7c5 JB |
4555 | time_limit = -1; |
4556 | got_some_input = 1; | |
4557 | } | |
4558 | proc = chan_process[channel]; | |
4559 | if (NILP (proc)) | |
4560 | continue; | |
4561 | ||
e690ca94 KS |
4562 | /* If this is a server stream socket, accept connection. */ |
4563 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4564 | { | |
4565 | server_accept_connection (proc, channel); | |
4566 | continue; | |
4567 | } | |
4568 | ||
d0d6b7c5 JB |
4569 | /* Read data from the process, starting with our |
4570 | buffered-ahead character if we have one. */ | |
4571 | ||
4572 | nread = read_process_output (proc, channel); | |
4573 | if (nread > 0) | |
4574 | { | |
4575 | /* Since read_process_output can run a filter, | |
4576 | which can call accept-process-output, | |
4577 | don't try to read from any other processes | |
4578 | before doing the select again. */ | |
4579 | FD_ZERO (&Available); | |
4580 | ||
4581 | if (do_display) | |
3007ebfb | 4582 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4583 | } |
4584 | #ifdef EWOULDBLOCK | |
4585 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4586 | ; | |
0b75e9a4 | 4587 | #endif |
89d7280d RS |
4588 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4589 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4590 | #ifdef O_NONBLOCK |
4591 | else if (nread == -1 && errno == EAGAIN) | |
4592 | ; | |
4593 | #else | |
4594 | #ifdef O_NDELAY | |
4595 | else if (nread == -1 && errno == EAGAIN) | |
4596 | ; | |
4597 | /* Note that we cannot distinguish between no input | |
4598 | available now and a closed pipe. | |
4599 | With luck, a closed pipe will be accompanied by | |
4600 | subprocess termination and SIGCHLD. */ | |
4601 | else if (nread == 0 && !NETCONN_P (proc)) | |
4602 | ; | |
ffd56f97 JB |
4603 | #endif /* O_NDELAY */ |
4604 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4605 | #ifdef HAVE_PTYS |
4606 | /* On some OSs with ptys, when the process on one end of | |
4607 | a pty exits, the other end gets an error reading with | |
4608 | errno = EIO instead of getting an EOF (0 bytes read). | |
4609 | Therefore, if we get an error reading and errno = | |
4610 | EIO, just continue, because the child process has | |
4611 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4612 | get a SIGCHLD). |
4613 | ||
4614 | However, it has been known to happen that the SIGCHLD | |
4615 | got lost. So raise the signl again just in case. | |
4616 | It can't hurt. */ | |
d0d6b7c5 | 4617 | else if (nread == -1 && errno == EIO) |
5651af6d | 4618 | kill (getpid (), SIGCHLD); |
ffd56f97 JB |
4619 | #endif /* HAVE_PTYS */ |
4620 | /* If we can detect process termination, don't consider the process | |
4621 | gone just because its pipe is closed. */ | |
d0d6b7c5 JB |
4622 | #ifdef SIGCHLD |
4623 | else if (nread == 0 && !NETCONN_P (proc)) | |
4624 | ; | |
4625 | #endif | |
4626 | else | |
4627 | { | |
4628 | /* Preserve status of processes already terminated. */ | |
4629 | XSETINT (XPROCESS (proc)->tick, ++process_tick); | |
4630 | deactivate_process (proc); | |
4631 | if (!NILP (XPROCESS (proc)->raw_status_low)) | |
4632 | update_status (XPROCESS (proc)); | |
4633 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4634 | XPROCESS (proc)->status | |
4635 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4636 | } | |
4637 | } | |
177c0ea7 | 4638 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
4639 | if (check_connect && FD_ISSET (channel, &Connecting) |
4640 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
4641 | { |
4642 | struct Lisp_Process *p; | |
dd2a17ab KS |
4643 | |
4644 | FD_CLR (channel, &connect_wait_mask); | |
4645 | if (--num_pending_connects < 0) | |
4646 | abort (); | |
4647 | ||
4648 | proc = chan_process[channel]; | |
4649 | if (NILP (proc)) | |
4650 | continue; | |
4651 | ||
4652 | p = XPROCESS (proc); | |
4653 | ||
4654 | #ifdef GNU_LINUX | |
4655 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
4656 | So only use it on systems where it is known to work. */ | |
4657 | { | |
e690ca94 | 4658 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
4659 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
4660 | xerrno = errno; | |
4661 | } | |
4662 | #else | |
44c887be PJ |
4663 | { |
4664 | struct sockaddr pname; | |
4665 | int pnamelen = sizeof(pname); | |
4666 | ||
4667 | /* If connection failed, getpeername will fail. */ | |
4668 | xerrno = 0; | |
4669 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
4670 | { | |
4671 | /* Obtain connect failure code through error slippage. */ | |
4672 | char dummy; | |
dd2a17ab | 4673 | xerrno = errno; |
44c887be PJ |
4674 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
4675 | xerrno = errno; | |
4676 | } | |
4677 | } | |
dd2a17ab KS |
4678 | #endif |
4679 | if (xerrno) | |
4680 | { | |
4681 | XSETINT (p->tick, ++process_tick); | |
4682 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); | |
4683 | deactivate_process (proc); | |
4684 | } | |
4685 | else | |
4686 | { | |
4687 | p->status = Qrun; | |
4688 | /* Execute the sentinel here. If we had relied on | |
4689 | status_notify to do it later, it will read input | |
4690 | from the process before calling the sentinel. */ | |
4691 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4692 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab KS |
4693 | { |
4694 | FD_SET (XINT (p->infd), &input_wait_mask); | |
4695 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
4696 | } | |
4697 | } | |
4698 | } | |
4699 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4700 | } /* end for each file descriptor */ |
4701 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4702 | |
855448dc | 4703 | waiting_for_user_input_p = saved_waiting_for_user_input_p; |
d430ee71 | 4704 | |
ffd56f97 JB |
4705 | /* If calling from keyboard input, do not quit |
4706 | since we want to return C-g as an input character. | |
4707 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4708 | if (read_kbd >= 0) |
ffd56f97 JB |
4709 | { |
4710 | /* Prevent input_pending from remaining set if we quit. */ | |
4711 | clear_input_pending (); | |
4712 | QUIT; | |
4713 | } | |
19310311 | 4714 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4715 | /* AlainF 5-Jul-1996 |
4716 | HP-UX 10.10 seems to have problems with signals coming in | |
4717 | Causes "poll: interrupted system call" messages when Emacs is run | |
4718 | in an X window | |
4719 | Turn periodic alarms back on */ | |
5d5beb62 | 4720 | start_polling (); |
19310311 | 4721 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
efa2a55c | 4722 | |
d0d6b7c5 JB |
4723 | return got_some_input; |
4724 | } | |
4725 | \f | |
3b9a3dfa RS |
4726 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4727 | ||
4728 | static Lisp_Object | |
4729 | read_process_output_call (fun_and_args) | |
4730 | Lisp_Object fun_and_args; | |
4731 | { | |
70949dac | 4732 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4733 | } |
4734 | ||
4735 | static Lisp_Object | |
4736 | read_process_output_error_handler (error) | |
4737 | Lisp_Object error; | |
4738 | { | |
4739 | cmd_error_internal (error, "error in process filter: "); | |
4740 | Vinhibit_quit = Qt; | |
4741 | update_echo_area (); | |
833ba342 | 4742 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4743 | return Qt; |
3b9a3dfa RS |
4744 | } |
4745 | ||
d0d6b7c5 JB |
4746 | /* Read pending output from the process channel, |
4747 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 4748 | Yield number of decoded characters read. |
d0d6b7c5 | 4749 | |
116c423c | 4750 | This function reads at most 4096 characters. |
d0d6b7c5 | 4751 | If you want to read all available subprocess output, |
0fa1789e KH |
4752 | you must call it repeatedly until it returns zero. |
4753 | ||
4754 | The characters read are decoded according to PROC's coding-system | |
4755 | for decoding. */ | |
d0d6b7c5 | 4756 | |
ff6daed3 | 4757 | static int |
d0d6b7c5 JB |
4758 | read_process_output (proc, channel) |
4759 | Lisp_Object proc; | |
4760 | register int channel; | |
4761 | { | |
e1283999 | 4762 | register int nbytes; |
d0d6b7c5 | 4763 | char *chars; |
d0d6b7c5 JB |
4764 | register Lisp_Object outstream; |
4765 | register struct buffer *old = current_buffer; | |
4766 | register struct Lisp_Process *p = XPROCESS (proc); | |
4767 | register int opoint; | |
c7580538 | 4768 | struct coding_system *coding = proc_decode_coding_system[channel]; |
e7fbaa65 | 4769 | int carryover = XINT (p->decoding_carryover); |
116c423c | 4770 | int readmax = 4096; |
d0d6b7c5 JB |
4771 | |
4772 | #ifdef VMS | |
4773 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); | |
4774 | ||
4775 | vs = get_vms_process_pointer (p->pid); | |
4776 | if (vs) | |
4777 | { | |
4778 | if (!vs->iosb[0]) | |
a319f7c1 | 4779 | return (0); /* Really weird if it does this */ |
d0d6b7c5 JB |
4780 | if (!(vs->iosb[0] & 1)) |
4781 | return -1; /* I/O error */ | |
4782 | } | |
4783 | else | |
4784 | error ("Could not get VMS process pointer"); | |
4785 | chars = vs->inputBuffer; | |
1d2fc612 RS |
4786 | nbytes = clean_vms_buffer (chars, vs->iosb[1]); |
4787 | if (nbytes <= 0) | |
d0d6b7c5 JB |
4788 | { |
4789 | start_vms_process_read (vs); /* Crank up the next read on the process */ | |
4790 | return 1; /* Nothing worth printing, say we got 1 */ | |
4791 | } | |
e7fbaa65 | 4792 | if (carryover > 0) |
0fa1789e | 4793 | { |
e7fbaa65 KH |
4794 | /* The data carried over in the previous decoding (which are at |
4795 | the tail of decoding buffer) should be prepended to the new | |
4796 | data read to decode all together. */ | |
ed7a4b2d | 4797 | chars = (char *) alloca (nbytes + carryover); |
d5db4077 | 4798 | bcopy (SDATA (p->decoding_buf), buf, carryover); |
ed7a4b2d | 4799 | bcopy (vs->inputBuffer, chars + carryover, nbytes); |
0fa1789e | 4800 | } |
d0d6b7c5 | 4801 | #else /* not VMS */ |
e690ca94 | 4802 | |
e690ca94 | 4803 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
4804 | if (carryover) |
4805 | /* See the comment above. */ | |
d5db4077 | 4806 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 4807 | |
e690ca94 KS |
4808 | #ifdef DATAGRAM_SOCKETS |
4809 | /* We have a working select, so proc_buffered_char is always -1. */ | |
4810 | if (DATAGRAM_CHAN_P (channel)) | |
4811 | { | |
4812 | int len = datagram_address[channel].len; | |
39b1da20 | 4813 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
4814 | 0, datagram_address[channel].sa, &len); |
4815 | } | |
4816 | else | |
4817 | #endif | |
d0d6b7c5 | 4818 | if (proc_buffered_char[channel] < 0) |
2d942bfa | 4819 | { |
39b1da20 | 4820 | nbytes = emacs_read (channel, chars + carryover, readmax); |
2d942bfa | 4821 | #ifdef ADAPTIVE_READ_BUFFERING |
39b1da20 | 4822 | if (nbytes > 0 && !NILP (p->adaptive_read_buffering)) |
2d942bfa KS |
4823 | { |
4824 | int delay = XINT (p->read_output_delay); | |
05b72afd | 4825 | if (nbytes < 256) |
2d942bfa KS |
4826 | { |
4827 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
4828 | { | |
4829 | if (delay == 0) | |
4830 | process_output_delay_count++; | |
4831 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
4832 | } | |
4833 | } | |
39b1da20 | 4834 | else if (delay > 0 && (nbytes == readmax)) |
2d942bfa KS |
4835 | { |
4836 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
4837 | if (delay == 0) | |
4838 | process_output_delay_count--; | |
4839 | } | |
4840 | XSETINT (p->read_output_delay, delay); | |
4841 | if (delay) | |
4842 | { | |
4843 | p->read_output_skip = Qt; | |
4844 | process_output_skip = 1; | |
4845 | } | |
4846 | } | |
4847 | #endif | |
4848 | } | |
d0d6b7c5 JB |
4849 | else |
4850 | { | |
ed7a4b2d | 4851 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 4852 | proc_buffered_char[channel] = -1; |
39b1da20 | 4853 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
4854 | if (nbytes < 0) |
4855 | nbytes = 1; | |
d0d6b7c5 | 4856 | else |
1d2fc612 | 4857 | nbytes = nbytes + 1; |
d0d6b7c5 JB |
4858 | } |
4859 | #endif /* not VMS */ | |
4860 | ||
ca65341e KH |
4861 | XSETINT (p->decoding_carryover, 0); |
4862 | ||
ed7a4b2d | 4863 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 4864 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
4865 | if (nbytes <= 0) |
4866 | { | |
4867 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
4868 | return nbytes; | |
4869 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
4870 | } | |
d0d6b7c5 | 4871 | |
1d2fc612 | 4872 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 4873 | nbytes += carryover; |
0fa1789e | 4874 | |
1d2fc612 | 4875 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
4876 | outstream = p->filter; |
4877 | if (!NILP (outstream)) | |
4878 | { | |
177c0ea7 | 4879 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
4880 | hitting ^G when a filter happens to be running won't screw |
4881 | it up. */ | |
aed13378 | 4882 | int count = SPECPDL_INDEX (); |
30c78175 | 4883 | Lisp_Object odeactivate; |
dfc21838 | 4884 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 4885 | Lisp_Object text; |
4da2f5be | 4886 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 4887 | int waiting = waiting_for_user_input_p; |
30c78175 | 4888 | |
dfc21838 RS |
4889 | /* No need to gcpro these, because all we do with them later |
4890 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 4891 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
4892 | XSETBUFFER (obuffer, current_buffer); |
4893 | okeymap = current_buffer->keymap; | |
30c78175 | 4894 | |
d0d6b7c5 | 4895 | specbind (Qinhibit_quit, Qt); |
6545aada | 4896 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 4897 | |
4da2f5be RS |
4898 | /* In case we get recursively called, |
4899 | and we already saved the match data nonrecursively, | |
4900 | save the same match data in safely recursive fashion. */ | |
4901 | if (outer_running_asynch_code) | |
4902 | { | |
4903 | Lisp_Object tem; | |
4904 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
4905 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
4906 | restore_search_regs (); | |
4907 | record_unwind_save_match_data (); | |
4908 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
4909 | } |
4910 | ||
4911 | /* For speed, if a search happens within this code, | |
4912 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 4913 | running_asynch_code = 1; |
4da2f5be | 4914 | |
ed7a4b2d KH |
4915 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
4916 | coding, 0); | |
082a1df2 | 4917 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
4918 | /* A new coding system might be found. */ |
4919 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
4920 | { | |
4921 | p->decode_coding_system = coding->symbol; | |
4922 | ||
4923 | /* Don't call setup_coding_system for | |
4924 | proc_decode_coding_system[channel] here. It is done in | |
4925 | detect_coding called via decode_coding above. */ | |
4926 | ||
4927 | /* If a coding system for encoding is not yet decided, we set | |
4928 | it as the same as coding-system for decoding. | |
4929 | ||
4930 | But, before doing that we must check if | |
4931 | proc_encode_coding_system[p->outfd] surely points to a | |
4932 | valid memory because p->outfd will be changed once EOF is | |
4933 | sent to the process. */ | |
4934 | if (NILP (p->encode_coding_system) | |
4935 | && proc_encode_coding_system[XINT (p->outfd)]) | |
4936 | { | |
4937 | p->encode_coding_system = coding->symbol; | |
4938 | setup_coding_system (coding->symbol, | |
4939 | proc_encode_coding_system[XINT (p->outfd)]); | |
4940 | } | |
4941 | } | |
51c6067d | 4942 | |
ed7a4b2d | 4943 | carryover = nbytes - coding->consumed; |
d7d2483a KS |
4944 | if (SCHARS (p->decoding_buf) < carryover) |
4945 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 4946 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
4947 | carryover); |
4948 | XSETINT (p->decoding_carryover, carryover); | |
03f04413 KH |
4949 | /* Adjust the multibyteness of TEXT to that of the filter. */ |
4950 | if (NILP (p->filter_multibyte) != ! STRING_MULTIBYTE (text)) | |
4951 | text = (STRING_MULTIBYTE (text) | |
4952 | ? Fstring_as_unibyte (text) | |
4953 | : Fstring_to_multibyte (text)); | |
e430e5ba | 4954 | if (SBYTES (text) > 0) |
dd97db06 KH |
4955 | internal_condition_case_1 (read_process_output_call, |
4956 | Fcons (outstream, | |
4957 | Fcons (proc, Fcons (text, Qnil))), | |
4958 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
4959 | read_process_output_error_handler); | |
4da2f5be RS |
4960 | |
4961 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 4962 | restore_search_regs (); |
4da2f5be | 4963 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 4964 | |
592ce97f | 4965 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
4966 | Vdeactivate_mark = odeactivate; |
4967 | ||
bbce7d72 RS |
4968 | /* Restore waiting_for_user_input_p as it was |
4969 | when we were called, in case the filter clobbered it. */ | |
4970 | waiting_for_user_input_p = waiting; | |
4971 | ||
7973cfa8 RS |
4972 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
4973 | because we might have changed minor modes or other things | |
4974 | that affect key bindings. */ | |
dfc21838 RS |
4975 | if (! EQ (Fcurrent_buffer (), obuffer) |
4976 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 4977 | #endif |
927e08be RS |
4978 | /* But do it only if the caller is actually going to read events. |
4979 | Otherwise there's no need to make him wake up, and it could | |
4980 | cause trouble (for example it would make Fsit_for return). */ | |
4981 | if (waiting_for_user_input_p == -1) | |
4982 | record_asynch_buffer_change (); | |
d72534ba | 4983 | |
d0d6b7c5 JB |
4984 | #ifdef VMS |
4985 | start_vms_process_read (vs); | |
4986 | #endif | |
2ea6d561 | 4987 | unbind_to (count, Qnil); |
e430e5ba | 4988 | return nbytes; |
d0d6b7c5 JB |
4989 | } |
4990 | ||
4991 | /* If no filter, write into buffer if it isn't dead. */ | |
4992 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
4993 | { | |
b0310da4 | 4994 | Lisp_Object old_read_only; |
12ca5cdf | 4995 | int old_begv, old_zv; |
d8a2934e | 4996 | int old_begv_byte, old_zv_byte; |
30c78175 | 4997 | Lisp_Object odeactivate; |
d8a2934e RS |
4998 | int before, before_byte; |
4999 | int opoint_byte; | |
ed7a4b2d | 5000 | Lisp_Object text; |
926b7e5e | 5001 | struct buffer *b; |
30c78175 RS |
5002 | |
5003 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 JB |
5004 | |
5005 | Fset_buffer (p->buffer); | |
6ec8bbd2 | 5006 | opoint = PT; |
d8a2934e | 5007 | opoint_byte = PT_BYTE; |
b0310da4 | 5008 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
5009 | old_begv = BEGV; |
5010 | old_zv = ZV; | |
d8a2934e RS |
5011 | old_begv_byte = BEGV_BYTE; |
5012 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
5013 | |
5014 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
5015 | |
5016 | /* Insert new output into buffer | |
5017 | at the current end-of-output marker, | |
5018 | thus preserving logical ordering of input and output. */ | |
5019 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5020 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5021 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5022 | ZV_BYTE)); | |
d0d6b7c5 | 5023 | else |
d8a2934e | 5024 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5025 | before = PT; |
d8a2934e | 5026 | before_byte = PT_BYTE; |
b0310da4 JB |
5027 | |
5028 | /* If the output marker is outside of the visible region, save | |
5029 | the restriction and widen. */ | |
6ec8bbd2 | 5030 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5031 | Fwiden (); |
5032 | ||
ed7a4b2d KH |
5033 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
5034 | coding, 0); | |
082a1df2 | 5035 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
5036 | /* A new coding system might be found. See the comment in the |
5037 | similar code in the previous `if' block. */ | |
5038 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
5039 | { | |
5040 | p->decode_coding_system = coding->symbol; | |
5041 | if (NILP (p->encode_coding_system) | |
5042 | && proc_encode_coding_system[XINT (p->outfd)]) | |
5043 | { | |
5044 | p->encode_coding_system = coding->symbol; | |
5045 | setup_coding_system (coding->symbol, | |
5046 | proc_encode_coding_system[XINT (p->outfd)]); | |
5047 | } | |
5048 | } | |
5049 | carryover = nbytes - coding->consumed; | |
d7d2483a KS |
5050 | if (SCHARS (p->decoding_buf) < carryover) |
5051 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 5052 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
5053 | carryover); |
5054 | XSETINT (p->decoding_carryover, carryover); | |
d69864bf KH |
5055 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5056 | if (NILP (current_buffer->enable_multibyte_characters) | |
5057 | != ! STRING_MULTIBYTE (text)) | |
5058 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5059 | ? Fstring_as_unibyte (text) |
03f04413 | 5060 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5061 | /* Insert before markers in case we are inserting where |
5062 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5063 | insert_from_string_before_markers (text, 0, 0, |
5064 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5065 | |
926b7e5e GM |
5066 | /* Make sure the process marker's position is valid when the |
5067 | process buffer is changed in the signal_after_change above. | |
5068 | W3 is known to do that. */ | |
5069 | if (BUFFERP (p->buffer) | |
5070 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5071 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5072 | else | |
5073 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5074 | |
d0d6b7c5 JB |
5075 | update_mode_lines++; |
5076 | ||
12ca5cdf RS |
5077 | /* Make sure opoint and the old restrictions |
5078 | float ahead of any new text just as point would. */ | |
5079 | if (opoint >= before) | |
d8a2934e RS |
5080 | { |
5081 | opoint += PT - before; | |
5082 | opoint_byte += PT_BYTE - before_byte; | |
5083 | } | |
12ca5cdf | 5084 | if (old_begv > before) |
d8a2934e RS |
5085 | { |
5086 | old_begv += PT - before; | |
5087 | old_begv_byte += PT_BYTE - before_byte; | |
5088 | } | |
12ca5cdf | 5089 | if (old_zv >= before) |
d8a2934e RS |
5090 | { |
5091 | old_zv += PT - before; | |
5092 | old_zv_byte += PT_BYTE - before_byte; | |
5093 | } | |
12ca5cdf | 5094 | |
b0310da4 | 5095 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5096 | if (old_begv != BEGV || old_zv != ZV) |
5097 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5098 | |
592ce97f | 5099 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5100 | Vdeactivate_mark = odeactivate; |
5101 | ||
b0310da4 | 5102 | current_buffer->read_only = old_read_only; |
d8a2934e | 5103 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 JB |
5104 | set_buffer_internal (old); |
5105 | } | |
5106 | #ifdef VMS | |
5107 | start_vms_process_read (vs); | |
5108 | #endif | |
1d2fc612 | 5109 | return nbytes; |
d0d6b7c5 JB |
5110 | } |
5111 | ||
5112 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
5113 | 0, 0, 0, | |
f3d9532b | 5114 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
fdb82f93 PJ |
5115 | This is intended for use by asynchronous process output filters and sentinels. */) |
5116 | () | |
d0d6b7c5 | 5117 | { |
8b4d685f | 5118 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
5119 | } |
5120 | \f | |
5121 | /* Sending data to subprocess */ | |
5122 | ||
5123 | jmp_buf send_process_frame; | |
0daad115 | 5124 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5125 | |
5126 | SIGTYPE | |
5127 | send_process_trap () | |
5128 | { | |
333f1b6f | 5129 | SIGNAL_THREAD_CHECK (SIGPIPE); |
d0d6b7c5 JB |
5130 | #ifdef BSD4_1 |
5131 | sigrelse (SIGPIPE); | |
5132 | sigrelse (SIGALRM); | |
5133 | #endif /* BSD4_1 */ | |
c8f44005 | 5134 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5135 | longjmp (send_process_frame, 1); |
5136 | } | |
5137 | ||
4556b700 RS |
5138 | /* Send some data to process PROC. |
5139 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5140 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5141 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5142 | |
a92e4183 KH |
5143 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5144 | for encoding before it is sent. | |
1fb0098c GM |
5145 | |
5146 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5147 | |
ff6daed3 | 5148 | static void |
4556b700 | 5149 | send_process (proc, buf, len, object) |
ecd1f654 | 5150 | volatile Lisp_Object proc; |
0daad115 GM |
5151 | unsigned char *volatile buf; |
5152 | volatile int len; | |
5153 | volatile Lisp_Object object; | |
d0d6b7c5 | 5154 | { |
ecd1f654 | 5155 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
2d942bfa | 5156 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5157 | int rv; |
0fa1789e | 5158 | struct coding_system *coding; |
6044e593 | 5159 | struct gcpro gcpro1; |
41c4895c | 5160 | SIGTYPE (*volatile old_sigpipe) (); |
6044e593 RS |
5161 | |
5162 | GCPRO1 (object); | |
d0d6b7c5 | 5163 | |
d0d6b7c5 | 5164 | #ifdef VMS |
d0d6b7c5 JB |
5165 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); |
5166 | #endif /* VMS */ | |
5167 | ||
2d942bfa KS |
5168 | if (! NILP (p->raw_status_low)) |
5169 | update_status (p); | |
5170 | if (! EQ (p->status, Qrun)) | |
5171 | error ("Process %s not running", SDATA (p->name)); | |
5172 | if (XINT (p->outfd) < 0) | |
5173 | error ("Output file descriptor of %s is closed", SDATA (p->name)); | |
0fa1789e | 5174 | |
2d942bfa | 5175 | coding = proc_encode_coding_system[XINT (p->outfd)]; |
486b111b KH |
5176 | Vlast_coding_system_used = coding->symbol; |
5177 | ||
ed7a4b2d KH |
5178 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5179 | || (BUFFERP (object) | |
a92e4183 KH |
5180 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5181 | || EQ (object, Qt)) | |
278bfdd6 | 5182 | { |
2d942bfa | 5183 | if (!EQ (coding->symbol, p->encode_coding_system)) |
278bfdd6 KH |
5184 | /* The coding system for encoding was changed to raw-text |
5185 | because we sent a unibyte text previously. Now we are | |
5186 | sending a multibyte text, thus we must encode it by the | |
2d942bfa KS |
5187 | original coding system specified for the current process. */ |
5188 | setup_coding_system (p->encode_coding_system, coding); | |
fbb70ad9 EZ |
5189 | /* src_multibyte should be set to 1 _after_ a call to |
5190 | setup_coding_system, since it resets src_multibyte to | |
5191 | zero. */ | |
5192 | coding->src_multibyte = 1; | |
278bfdd6 KH |
5193 | } |
5194 | else | |
5195 | { | |
a92e4183 KH |
5196 | /* For sending a unibyte text, character code conversion should |
5197 | not take place but EOL conversion should. So, setup raw-text | |
5198 | or one of the subsidiary if we have not yet done it. */ | |
5199 | if (coding->type != coding_type_raw_text) | |
5200 | { | |
5201 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5202 | { | |
5203 | /* But, before changing the coding, we must flush out data. */ | |
5204 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5205 | send_process (proc, "", 0, Qt); | |
5206 | } | |
5207 | coding->src_multibyte = 0; | |
5208 | setup_raw_text_coding_system (coding); | |
5209 | } | |
278bfdd6 | 5210 | } |
a4a37e65 KH |
5211 | coding->dst_multibyte = 0; |
5212 | ||
ed7a4b2d | 5213 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e KH |
5214 | { |
5215 | int require = encoding_buffer_size (coding, len); | |
0daad115 | 5216 | int from_byte = -1, from = -1, to = -1; |
0fa1789e | 5217 | |
ed7a4b2d | 5218 | if (BUFFERP (object)) |
0fa1789e | 5219 | { |
ed7a4b2d KH |
5220 | from_byte = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5221 | from = buf_bytepos_to_charpos (XBUFFER (object), from_byte); | |
5222 | to = buf_bytepos_to_charpos (XBUFFER (object), from_byte + len); | |
5223 | } | |
5224 | else if (STRINGP (object)) | |
5225 | { | |
d5db4077 | 5226 | from_byte = buf - SDATA (object); |
ed7a4b2d KH |
5227 | from = string_byte_to_char (object, from_byte); |
5228 | to = string_byte_to_char (object, from_byte + len); | |
0fa1789e KH |
5229 | } |
5230 | ||
452294c2 GM |
5231 | if (coding->composing != COMPOSITION_DISABLED) |
5232 | { | |
5233 | if (from_byte >= 0) | |
5234 | coding_save_composition (coding, from, to, object); | |
5235 | else | |
5236 | coding->composing = COMPOSITION_DISABLED; | |
5237 | } | |
ed7a4b2d | 5238 | |
2d942bfa KS |
5239 | if (SBYTES (p->encoding_buf) < require) |
5240 | p->encoding_buf = make_uninit_string (require); | |
ed7a4b2d KH |
5241 | |
5242 | if (from_byte >= 0) | |
5243 | buf = (BUFFERP (object) | |
5244 | ? BUF_BYTE_ADDRESS (XBUFFER (object), from_byte) | |
d5db4077 | 5245 | : SDATA (object) + from_byte); |
0fa1789e | 5246 | |
2d942bfa | 5247 | object = p->encoding_buf; |
d5db4077 KR |
5248 | encode_coding (coding, (char *) buf, SDATA (object), |
5249 | len, SBYTES (object)); | |
9de36315 | 5250 | coding_free_composition_data (coding); |
e7fbaa65 | 5251 | len = coding->produced; |
d5db4077 | 5252 | buf = SDATA (object); |
0fa1789e | 5253 | } |
d0d6b7c5 JB |
5254 | |
5255 | #ifdef VMS | |
5256 | vs = get_vms_process_pointer (p->pid); | |
5257 | if (vs == 0) | |
5258 | error ("Could not find this process: %x", p->pid); | |
5259 | else if (write_to_vms_process (vs, buf, len)) | |
5260 | ; | |
0daad115 | 5261 | #else /* not VMS */ |
4556b700 RS |
5262 | |
5263 | if (pty_max_bytes == 0) | |
5264 | { | |
5265 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
2d942bfa | 5266 | pty_max_bytes = fpathconf (XFASTINT (p->outfd), _PC_MAX_CANON); |
4556b700 RS |
5267 | if (pty_max_bytes < 0) |
5268 | pty_max_bytes = 250; | |
5269 | #else | |
5270 | pty_max_bytes = 250; | |
5271 | #endif | |
5272 | /* Deduct one, to leave space for the eof. */ | |
5273 | pty_max_bytes--; | |
5274 | } | |
5275 | ||
0daad115 GM |
5276 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5277 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5278 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5279 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5280 | { |
5281 | process_sent_to = proc; | |
5282 | while (len > 0) | |
5283 | { | |
5284 | int this = len; | |
93b4f699 | 5285 | |
0daad115 GM |
5286 | /* Decide how much data we can send in one batch. |
5287 | Long lines need to be split into multiple batches. */ | |
2d942bfa | 5288 | if (!NILP (p->pty_flag)) |
0daad115 | 5289 | { |
c0ec53ad SM |
5290 | /* Starting this at zero is always correct when not the first |
5291 | iteration because the previous iteration ended by sending C-d. | |
0daad115 GM |
5292 | It may not be correct for the first iteration |
5293 | if a partial line was sent in a separate send_process call. | |
5294 | If that proves worth handling, we need to save linepos | |
5295 | in the process object. */ | |
5296 | int linepos = 0; | |
5297 | unsigned char *ptr = (unsigned char *) buf; | |
5298 | unsigned char *end = (unsigned char *) buf + len; | |
5299 | ||
5300 | /* Scan through this text for a line that is too long. */ | |
5301 | while (ptr != end && linepos < pty_max_bytes) | |
5302 | { | |
5303 | if (*ptr == '\n') | |
5304 | linepos = 0; | |
5305 | else | |
5306 | linepos++; | |
5307 | ptr++; | |
5308 | } | |
5309 | /* If we found one, break the line there | |
5310 | and put in a C-d to force the buffer through. */ | |
5311 | this = ptr - buf; | |
5312 | } | |
93b4f699 | 5313 | |
0daad115 GM |
5314 | /* Send this batch, using one or more write calls. */ |
5315 | while (this > 0) | |
5316 | { | |
2d942bfa | 5317 | int outfd = XINT (p->outfd); |
0daad115 | 5318 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5319 | #ifdef DATAGRAM_SOCKETS |
5320 | if (DATAGRAM_CHAN_P (outfd)) | |
5321 | { | |
5322 | rv = sendto (outfd, (char *) buf, this, | |
5323 | 0, datagram_address[outfd].sa, | |
5324 | datagram_address[outfd].len); | |
5325 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5326 | { |
5327 | signal (SIGPIPE, old_sigpipe); | |
5328 | report_file_error ("sending datagram", | |
5329 | Fcons (proc, Qnil)); | |
5330 | } | |
e690ca94 KS |
5331 | } |
5332 | else | |
5333 | #endif | |
2d942bfa KS |
5334 | { |
5335 | rv = emacs_write (outfd, (char *) buf, this); | |
5336 | #ifdef ADAPTIVE_READ_BUFFERING | |
5337 | if (XINT (p->read_output_delay) > 0 | |
5338 | && EQ (p->adaptive_read_buffering, Qt)) | |
5339 | { | |
5340 | XSETFASTINT (p->read_output_delay, 0); | |
5341 | process_output_delay_count--; | |
5342 | p->read_output_skip = Qnil; | |
5343 | } | |
5344 | #endif | |
5345 | } | |
0daad115 | 5346 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5347 | |
0daad115 GM |
5348 | if (rv < 0) |
5349 | { | |
5350 | if (0 | |
d0d6b7c5 | 5351 | #ifdef EWOULDBLOCK |
0daad115 | 5352 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5353 | #endif |
5354 | #ifdef EAGAIN | |
0daad115 | 5355 | || errno == EAGAIN |
d0d6b7c5 | 5356 | #endif |
0daad115 | 5357 | ) |
177c0ea7 | 5358 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5359 | that may allow the program |
5360 | to finish doing output and read more. */ | |
5361 | { | |
0daad115 | 5362 | int offset = 0; |
4556b700 | 5363 | |
3433b6bd | 5364 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5365 | /* A gross hack to work around a bug in FreeBSD. |
5366 | In the following sequence, read(2) returns | |
5367 | bogus data: | |
5368 | ||
5369 | write(2) 1022 bytes | |
5370 | write(2) 954 bytes, get EAGAIN | |
5371 | read(2) 1024 bytes in process_read_output | |
5372 | read(2) 11 bytes in process_read_output | |
5373 | ||
5374 | That is, read(2) returns more bytes than have | |
5375 | ever been written successfully. The 1033 bytes | |
5376 | read are the 1022 bytes written successfully | |
5377 | after processing (for example with CRs added if | |
5378 | the terminal is set up that way which it is | |
5379 | here). The same bytes will be seen again in a | |
5380 | later read(2), without the CRs. */ | |
177c0ea7 | 5381 | |
0daad115 GM |
5382 | if (errno == EAGAIN) |
5383 | { | |
5384 | int flags = FWRITE; | |
2d942bfa | 5385 | ioctl (XINT (p->outfd), TIOCFLUSH, &flags); |
0daad115 | 5386 | } |
3433b6bd | 5387 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5388 | |
0daad115 GM |
5389 | /* Running filters might relocate buffers or strings. |
5390 | Arrange to relocate BUF. */ | |
5391 | if (BUFFERP (object)) | |
5392 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); | |
5393 | else if (STRINGP (object)) | |
d5db4077 | 5394 | offset = buf - SDATA (object); |
0daad115 | 5395 | |
f3e6605c | 5396 | #ifdef EMACS_HAS_USECS |
214d6069 | 5397 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5398 | #else |
214d6069 | 5399 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5400 | #endif |
4556b700 | 5401 | |
0daad115 GM |
5402 | if (BUFFERP (object)) |
5403 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); | |
5404 | else if (STRINGP (object)) | |
d5db4077 | 5405 | buf = offset + SDATA (object); |
4556b700 | 5406 | |
0daad115 GM |
5407 | rv = 0; |
5408 | } | |
5409 | else | |
5410 | /* This is a real error. */ | |
5411 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5412 | } | |
5413 | buf += rv; | |
5414 | len -= rv; | |
5415 | this -= rv; | |
5416 | } | |
f76475ad | 5417 | |
0daad115 GM |
5418 | /* If we sent just part of the string, put in an EOF |
5419 | to force it through, before we send the rest. */ | |
5420 | if (len > 0) | |
5421 | Fprocess_send_eof (proc); | |
5422 | } | |
5423 | } | |
5424 | #endif /* not VMS */ | |
d0d6b7c5 JB |
5425 | else |
5426 | { | |
0ff69270 | 5427 | signal (SIGPIPE, old_sigpipe); |
0daad115 GM |
5428 | #ifndef VMS |
5429 | proc = process_sent_to; | |
2d942bfa | 5430 | p = XPROCESS (proc); |
0daad115 | 5431 | #endif |
2d942bfa KS |
5432 | p->raw_status_low = Qnil; |
5433 | p->raw_status_high = Qnil; | |
5434 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5435 | XSETINT (p->tick, ++process_tick); | |
d0d6b7c5 JB |
5436 | deactivate_process (proc); |
5437 | #ifdef VMS | |
2d942bfa | 5438 | error ("Error writing to process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5439 | #else |
2d942bfa | 5440 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5441 | #endif |
5442 | } | |
6044e593 RS |
5443 | |
5444 | UNGCPRO; | |
d0d6b7c5 JB |
5445 | } |
5446 | ||
5447 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5448 | 3, 3, 0, |
5449 | doc: /* Send current contents of region as input to PROCESS. | |
5450 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5451 | nil, indicating the current buffer's process. | |
5452 | Called from program, takes three arguments, PROCESS, START and END. | |
5453 | If the region is more than 500 characters long, | |
5454 | it is sent in several bunches. This may happen even for shorter regions. | |
5455 | Output from processes can arrive in between bunches. */) | |
5456 | (process, start, end) | |
d0d6b7c5 JB |
5457 | Lisp_Object process, start, end; |
5458 | { | |
5459 | Lisp_Object proc; | |
d8a2934e | 5460 | int start1, end1; |
d0d6b7c5 JB |
5461 | |
5462 | proc = get_process (process); | |
5463 | validate_region (&start, &end); | |
5464 | ||
5465 | if (XINT (start) < GPT && XINT (end) > GPT) | |
4da6dec8 | 5466 | move_gap (XINT (start)); |
d0d6b7c5 | 5467 | |
d8a2934e RS |
5468 | start1 = CHAR_TO_BYTE (XINT (start)); |
5469 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5470 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
4556b700 | 5471 | Fcurrent_buffer ()); |
d0d6b7c5 JB |
5472 | |
5473 | return Qnil; | |
5474 | } | |
5475 | ||
5476 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5477 | 2, 2, 0, |
5478 | doc: /* Send PROCESS the contents of STRING as input. | |
5479 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5480 | nil, indicating the current buffer's process. | |
5481 | If STRING is more than 500 characters long, | |
5482 | it is sent in several bunches. This may happen even for shorter strings. | |
5483 | Output from processes can arrive in between bunches. */) | |
5484 | (process, string) | |
d0d6b7c5 JB |
5485 | Lisp_Object process, string; |
5486 | { | |
5487 | Lisp_Object proc; | |
b7826503 | 5488 | CHECK_STRING (string); |
d0d6b7c5 | 5489 | proc = get_process (process); |
d5db4077 KR |
5490 | send_process (proc, SDATA (string), |
5491 | SBYTES (string), string); | |
d0d6b7c5 JB |
5492 | return Qnil; |
5493 | } | |
5494 | \f | |
16782258 JD |
5495 | /* Return the foreground process group for the tty/pty that |
5496 | the process P uses. */ | |
5497 | static int | |
5498 | emacs_get_tty_pgrp (p) | |
5499 | struct Lisp_Process *p; | |
5500 | { | |
5501 | int gid = -1; | |
5502 | ||
f3d9532b | 5503 | #ifdef TIOCGPGRP |
16782258 JD |
5504 | if (ioctl (XINT (p->infd), TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
5505 | { | |
5506 | int fd; | |
5507 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5508 | master side. Try the slave side. */ | |
5509 | fd = emacs_open (XSTRING (p->tty_name)->data, O_RDONLY, 0); | |
5510 | ||
5511 | if (fd != -1) | |
5512 | { | |
5513 | ioctl (fd, TIOCGPGRP, &gid); | |
5514 | emacs_close (fd); | |
5515 | } | |
5516 | } | |
5517 | #endif /* defined (TIOCGPGRP ) */ | |
5518 | ||
5519 | return gid; | |
5520 | } | |
5521 | ||
b81ea5ef RS |
5522 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5523 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5524 | doc: /* Return t if PROCESS has given the terminal to a child. |
5525 | If the operating system does not make it possible to find out, | |
5526 | return t unconditionally. */) | |
5527 | (process) | |
b81ea5ef RS |
5528 | Lisp_Object process; |
5529 | { | |
5530 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5531 | in a way that will cause returning t. */ | |
16782258 | 5532 | int gid; |
b81ea5ef RS |
5533 | Lisp_Object proc; |
5534 | struct Lisp_Process *p; | |
5535 | ||
5536 | proc = get_process (process); | |
5537 | p = XPROCESS (proc); | |
5538 | ||
5539 | if (!EQ (p->childp, Qt)) | |
5540 | error ("Process %s is not a subprocess", | |
d5db4077 | 5541 | SDATA (p->name)); |
b81ea5ef RS |
5542 | if (XINT (p->infd) < 0) |
5543 | error ("Process %s is not active", | |
d5db4077 | 5544 | SDATA (p->name)); |
b81ea5ef | 5545 | |
16782258 | 5546 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef RS |
5547 | |
5548 | if (gid == XFASTINT (p->pid)) | |
5549 | return Qnil; | |
5550 | return Qt; | |
5551 | } | |
5552 | \f | |
d0d6b7c5 | 5553 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5554 | If CURRENT_GROUP is t, that means send to the process group |
5555 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5556 | This is used for various commands in shell mode. |
b81ea5ef RS |
5557 | If CURRENT_GROUP is lambda, that means send to the process group |
5558 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5559 | ||
d0d6b7c5 | 5560 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5561 | right away. |
5562 | ||
5563 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5564 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5565 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5566 | |
f9738840 | 5567 | static void |
d0d6b7c5 JB |
5568 | process_send_signal (process, signo, current_group, nomsg) |
5569 | Lisp_Object process; | |
5570 | int signo; | |
5571 | Lisp_Object current_group; | |
5572 | int nomsg; | |
5573 | { | |
5574 | Lisp_Object proc; | |
5575 | register struct Lisp_Process *p; | |
5576 | int gid; | |
5577 | int no_pgrp = 0; | |
5578 | ||
5579 | proc = get_process (process); | |
5580 | p = XPROCESS (proc); | |
5581 | ||
5582 | if (!EQ (p->childp, Qt)) | |
5583 | error ("Process %s is not a subprocess", | |
d5db4077 | 5584 | SDATA (p->name)); |
a9f2c884 | 5585 | if (XINT (p->infd) < 0) |
d0d6b7c5 | 5586 | error ("Process %s is not active", |
d5db4077 | 5587 | SDATA (p->name)); |
d0d6b7c5 JB |
5588 | |
5589 | if (NILP (p->pty_flag)) | |
5590 | current_group = Qnil; | |
5591 | ||
d0d6b7c5 | 5592 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5593 | if (NILP (current_group)) |
5594 | /* Send the signal to the shell's process group. */ | |
5595 | gid = XFASTINT (p->pid); | |
5596 | else | |
d0d6b7c5 | 5597 | { |
b0310da4 | 5598 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5599 | /* If possible, send signals to the entire pgrp |
5600 | by sending an input character to it. */ | |
b0310da4 | 5601 | |
6be429b1 JB |
5602 | /* TERMIOS is the latest and bestest, and seems most likely to |
5603 | work. If the system has it, use it. */ | |
5604 | #ifdef HAVE_TERMIOS | |
5605 | struct termios t; | |
7f916a36 RS |
5606 | cc_t *sig_char = NULL; |
5607 | ||
5608 | tcgetattr (XINT (p->infd), &t); | |
6be429b1 JB |
5609 | |
5610 | switch (signo) | |
5611 | { | |
5612 | case SIGINT: | |
7f916a36 RS |
5613 | sig_char = &t.c_cc[VINTR]; |
5614 | break; | |
6be429b1 JB |
5615 | |
5616 | case SIGQUIT: | |
7f916a36 RS |
5617 | sig_char = &t.c_cc[VQUIT]; |
5618 | break; | |
6be429b1 JB |
5619 | |
5620 | case SIGTSTP: | |
d0adf46f | 5621 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5622 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5623 | #else |
7f916a36 | 5624 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5625 | #endif |
7f916a36 | 5626 | break; |
6be429b1 JB |
5627 | } |
5628 | ||
ca4313d5 | 5629 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5630 | { |
5631 | send_process (proc, sig_char, 1, Qnil); | |
5632 | return; | |
5633 | } | |
5634 | /* If we can't send the signal with a character, | |
5635 | fall through and send it another way. */ | |
6be429b1 JB |
5636 | #else /* ! HAVE_TERMIOS */ |
5637 | ||
b0310da4 JB |
5638 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5639 | current control characters. */ | |
d0d6b7c5 | 5640 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5641 | |
d0d6b7c5 JB |
5642 | struct tchars c; |
5643 | struct ltchars lc; | |
5644 | ||
5645 | switch (signo) | |
5646 | { | |
5647 | case SIGINT: | |
a9f2c884 | 5648 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5649 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 5650 | return; |
d0d6b7c5 | 5651 | case SIGQUIT: |
a9f2c884 | 5652 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5653 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 5654 | return; |
0ad77c54 | 5655 | #ifdef SIGTSTP |
d0d6b7c5 | 5656 | case SIGTSTP: |
a9f2c884 | 5657 | ioctl (XINT (p->infd), TIOCGLTC, &lc); |
4556b700 | 5658 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 5659 | return; |
b0310da4 | 5660 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5661 | } |
b0310da4 JB |
5662 | |
5663 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
5664 | ||
5665 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
5666 | characters. */ | |
5667 | #ifdef TCGETA | |
d0d6b7c5 JB |
5668 | struct termio t; |
5669 | switch (signo) | |
5670 | { | |
5671 | case SIGINT: | |
a9f2c884 | 5672 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5673 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 5674 | return; |
d0d6b7c5 | 5675 | case SIGQUIT: |
a9f2c884 | 5676 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5677 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 5678 | return; |
7d79e3b4 | 5679 | #ifdef SIGTSTP |
d0d6b7c5 | 5680 | case SIGTSTP: |
a9f2c884 | 5681 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5682 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 5683 | return; |
b0310da4 | 5684 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5685 | } |
b0310da4 JB |
5686 | #else /* ! defined (TCGETA) */ |
5687 | Your configuration files are messed up. | |
5688 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
5689 | you'd better be using one of the alternatives above! */ | |
5690 | #endif /* ! defined (TCGETA) */ | |
5691 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
f1c206fc | 5692 | /* In this case, the code above should alway returns. */ |
20505336 | 5693 | abort (); |
f1c206fc RS |
5694 | #endif /* ! defined HAVE_TERMIOS */ |
5695 | ||
5696 | /* The code above may fall through if it can't | |
5697 | handle the signal. */ | |
20505336 | 5698 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5699 | |
177c0ea7 | 5700 | #ifdef TIOCGPGRP |
2af70a0c | 5701 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5702 | Otherwise, use the pty to get the pgrp. |
5703 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5704 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5705 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5706 | His patch indicates that if TIOCGPGRP returns an error, then |
5707 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5708 | |
16782258 | 5709 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5710 | |
16782258 JD |
5711 | if (gid == -1) |
5712 | /* If we can't get the information, assume | |
5713 | the shell owns the tty. */ | |
5714 | gid = XFASTINT (p->pid); | |
2af70a0c RS |
5715 | |
5716 | /* It is not clear whether anything really can set GID to -1. | |
5717 | Perhaps on some system one of those ioctls can or could do so. | |
5718 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5719 | if (gid == -1) |
5720 | no_pgrp = 1; | |
b0310da4 | 5721 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5722 | /* Can't select pgrps on this system, so we know that |
5723 | the child itself heads the pgrp. */ | |
2af70a0c | 5724 | gid = XFASTINT (p->pid); |
301c3fe4 | 5725 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5726 | |
5727 | /* If current_group is lambda, and the shell owns the terminal, | |
5728 | don't send any signal. */ | |
2af70a0c | 5729 | if (EQ (current_group, Qlambda) && gid == XFASTINT (p->pid)) |
b81ea5ef | 5730 | return; |
d0d6b7c5 | 5731 | } |
d0d6b7c5 JB |
5732 | |
5733 | switch (signo) | |
5734 | { | |
5735 | #ifdef SIGCONT | |
5736 | case SIGCONT: | |
5737 | p->raw_status_low = Qnil; | |
5738 | p->raw_status_high = Qnil; | |
5739 | p->status = Qrun; | |
5740 | XSETINT (p->tick, ++process_tick); | |
5741 | if (!nomsg) | |
ff6daed3 | 5742 | status_notify (NULL); |
d0d6b7c5 | 5743 | break; |
301c3fe4 | 5744 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 JB |
5745 | case SIGINT: |
5746 | #ifdef VMS | |
4556b700 | 5747 | send_process (proc, "\003", 1, Qnil); /* ^C */ |
d0d6b7c5 JB |
5748 | goto whoosh; |
5749 | #endif | |
5750 | case SIGQUIT: | |
5751 | #ifdef VMS | |
4556b700 | 5752 | send_process (proc, "\031", 1, Qnil); /* ^Y */ |
d0d6b7c5 JB |
5753 | goto whoosh; |
5754 | #endif | |
5755 | case SIGKILL: | |
5756 | #ifdef VMS | |
5757 | sys$forcex (&(XFASTINT (p->pid)), 0, 1); | |
5758 | whoosh: | |
5759 | #endif | |
a9f2c884 | 5760 | flush_pending_output (XINT (p->infd)); |
d0d6b7c5 JB |
5761 | break; |
5762 | } | |
5763 | ||
5764 | /* If we don't have process groups, send the signal to the immediate | |
5765 | subprocess. That isn't really right, but it's better than any | |
5766 | obvious alternative. */ | |
5767 | if (no_pgrp) | |
5768 | { | |
5769 | kill (XFASTINT (p->pid), signo); | |
5770 | return; | |
5771 | } | |
5772 | ||
5773 | /* gid may be a pid, or minus a pgrp's number */ | |
5774 | #ifdef TIOCSIGSEND | |
5775 | if (!NILP (current_group)) | |
16782258 JD |
5776 | { |
5777 | if (ioctl (XINT (p->infd), TIOCSIGSEND, signo) == -1) | |
5778 | EMACS_KILLPG (gid, signo); | |
5779 | } | |
d0d6b7c5 JB |
5780 | else |
5781 | { | |
5782 | gid = - XFASTINT (p->pid); | |
5783 | kill (gid, signo); | |
5784 | } | |
301c3fe4 | 5785 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5786 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5787 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5788 | } |
5789 | ||
5790 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5791 | doc: /* Interrupt process PROCESS. |
5792 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5793 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5794 | Second arg CURRENT-GROUP non-nil means send signal to |
5795 | the current process-group of the process's controlling terminal | |
5796 | rather than to the process's own process group. | |
5797 | If the process is a shell, this means interrupt current subjob | |
5798 | rather than the shell. | |
5799 | ||
5800 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5801 | don't send the signal. */) | |
5802 | (process, current_group) | |
d0d6b7c5 JB |
5803 | Lisp_Object process, current_group; |
5804 | { | |
5805 | process_send_signal (process, SIGINT, current_group, 0); | |
5806 | return process; | |
5807 | } | |
5808 | ||
5809 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5810 | doc: /* Kill process PROCESS. May be process or name of one. |
5811 | See function `interrupt-process' for more details on usage. */) | |
5812 | (process, current_group) | |
d0d6b7c5 JB |
5813 | Lisp_Object process, current_group; |
5814 | { | |
5815 | process_send_signal (process, SIGKILL, current_group, 0); | |
5816 | return process; | |
5817 | } | |
5818 | ||
5819 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5820 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5821 | See function `interrupt-process' for more details on usage. */) | |
5822 | (process, current_group) | |
d0d6b7c5 JB |
5823 | Lisp_Object process, current_group; |
5824 | { | |
5825 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5826 | return process; | |
5827 | } | |
5828 | ||
5829 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5830 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5831 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5832 | If PROCESS is a network process, inhibit handling of incoming traffic. */) |
fdb82f93 | 5833 | (process, current_group) |
d0d6b7c5 JB |
5834 | Lisp_Object process, current_group; |
5835 | { | |
e690ca94 KS |
5836 | #ifdef HAVE_SOCKETS |
5837 | if (PROCESSP (process) && NETCONN_P (process)) | |
5838 | { | |
5839 | struct Lisp_Process *p; | |
177c0ea7 | 5840 | |
e690ca94 KS |
5841 | p = XPROCESS (process); |
5842 | if (NILP (p->command) | |
5843 | && XINT (p->infd) >= 0) | |
5844 | { | |
5845 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
5846 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
5847 | } | |
5848 | p->command = Qt; | |
5849 | return process; | |
5850 | } | |
5851 | #endif | |
d0d6b7c5 | 5852 | #ifndef SIGTSTP |
a9a73d6c | 5853 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
5854 | #else |
5855 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5856 | #endif | |
5857 | return process; | |
5858 | } | |
5859 | ||
5860 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5861 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5862 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5863 | If PROCESS is a network process, resume handling of incoming traffic. */) |
fdb82f93 | 5864 | (process, current_group) |
d0d6b7c5 JB |
5865 | Lisp_Object process, current_group; |
5866 | { | |
e690ca94 KS |
5867 | #ifdef HAVE_SOCKETS |
5868 | if (PROCESSP (process) && NETCONN_P (process)) | |
5869 | { | |
5870 | struct Lisp_Process *p; | |
5871 | ||
5872 | p = XPROCESS (process); | |
5873 | if (EQ (p->command, Qt) | |
5874 | && XINT (p->infd) >= 0 | |
5875 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) | |
5876 | { | |
5877 | FD_SET (XINT (p->infd), &input_wait_mask); | |
5878 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
5879 | } | |
5880 | p->command = Qnil; | |
5881 | return process; | |
5882 | } | |
5883 | #endif | |
d0d6b7c5 JB |
5884 | #ifdef SIGCONT |
5885 | process_send_signal (process, SIGCONT, current_group, 0); | |
5886 | #else | |
a9a73d6c | 5887 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
5888 | #endif |
5889 | return process; | |
5890 | } | |
5891 | ||
5892 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
5893 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
5894 | doc: /* Send PROCESS the signal with code SIGCODE. | |
5895 | PROCESS may also be an integer specifying the process id of the | |
5896 | process to signal; in this case, the process need not be a child of | |
5897 | this Emacs. | |
fdb82f93 | 5898 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
5899 | (process, sigcode) |
5900 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 5901 | { |
cdd5ea86 KS |
5902 | Lisp_Object pid; |
5903 | ||
5904 | if (INTEGERP (process)) | |
5905 | { | |
5906 | pid = process; | |
5907 | goto got_it; | |
5908 | } | |
5909 | ||
5910 | if (STRINGP (process)) | |
5911 | { | |
5912 | Lisp_Object tem; | |
5913 | if (tem = Fget_process (process), NILP (tem)) | |
5914 | { | |
5915 | pid = Fstring_to_number (process, make_number (10)); | |
5916 | if (XINT (pid) != 0) | |
5917 | goto got_it; | |
5918 | } | |
5919 | process = tem; | |
5920 | } | |
5921 | else | |
5922 | process = get_process (process); | |
177c0ea7 | 5923 | |
cdd5ea86 KS |
5924 | if (NILP (process)) |
5925 | return process; | |
5926 | ||
5927 | CHECK_PROCESS (process); | |
5928 | pid = XPROCESS (process)->pid; | |
5929 | if (!INTEGERP (pid) || XINT (pid) <= 0) | |
5930 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); | |
5931 | ||
5932 | got_it: | |
4766242d RS |
5933 | |
5934 | #define handle_signal(NAME, VALUE) \ | |
5935 | else if (!strcmp (name, NAME)) \ | |
5936 | XSETINT (sigcode, VALUE) | |
5937 | ||
5938 | if (INTEGERP (sigcode)) | |
5939 | ; | |
5940 | else | |
5941 | { | |
5942 | unsigned char *name; | |
5943 | ||
b7826503 | 5944 | CHECK_SYMBOL (sigcode); |
d5db4077 | 5945 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d RS |
5946 | |
5947 | if (0) | |
5948 | ; | |
5949 | #ifdef SIGHUP | |
5950 | handle_signal ("SIGHUP", SIGHUP); | |
5951 | #endif | |
5952 | #ifdef SIGINT | |
5953 | handle_signal ("SIGINT", SIGINT); | |
5954 | #endif | |
5955 | #ifdef SIGQUIT | |
5956 | handle_signal ("SIGQUIT", SIGQUIT); | |
5957 | #endif | |
5958 | #ifdef SIGILL | |
5959 | handle_signal ("SIGILL", SIGILL); | |
5960 | #endif | |
5961 | #ifdef SIGABRT | |
5962 | handle_signal ("SIGABRT", SIGABRT); | |
5963 | #endif | |
5964 | #ifdef SIGEMT | |
5965 | handle_signal ("SIGEMT", SIGEMT); | |
5966 | #endif | |
5967 | #ifdef SIGKILL | |
5968 | handle_signal ("SIGKILL", SIGKILL); | |
5969 | #endif | |
5970 | #ifdef SIGFPE | |
5971 | handle_signal ("SIGFPE", SIGFPE); | |
5972 | #endif | |
5973 | #ifdef SIGBUS | |
5974 | handle_signal ("SIGBUS", SIGBUS); | |
5975 | #endif | |
5976 | #ifdef SIGSEGV | |
5977 | handle_signal ("SIGSEGV", SIGSEGV); | |
5978 | #endif | |
5979 | #ifdef SIGSYS | |
5980 | handle_signal ("SIGSYS", SIGSYS); | |
5981 | #endif | |
5982 | #ifdef SIGPIPE | |
5983 | handle_signal ("SIGPIPE", SIGPIPE); | |
5984 | #endif | |
5985 | #ifdef SIGALRM | |
5986 | handle_signal ("SIGALRM", SIGALRM); | |
5987 | #endif | |
5988 | #ifdef SIGTERM | |
5989 | handle_signal ("SIGTERM", SIGTERM); | |
5990 | #endif | |
5991 | #ifdef SIGURG | |
5992 | handle_signal ("SIGURG", SIGURG); | |
5993 | #endif | |
5994 | #ifdef SIGSTOP | |
5995 | handle_signal ("SIGSTOP", SIGSTOP); | |
5996 | #endif | |
5997 | #ifdef SIGTSTP | |
5998 | handle_signal ("SIGTSTP", SIGTSTP); | |
5999 | #endif | |
6000 | #ifdef SIGCONT | |
6001 | handle_signal ("SIGCONT", SIGCONT); | |
6002 | #endif | |
6003 | #ifdef SIGCHLD | |
6004 | handle_signal ("SIGCHLD", SIGCHLD); | |
6005 | #endif | |
6006 | #ifdef SIGTTIN | |
6007 | handle_signal ("SIGTTIN", SIGTTIN); | |
6008 | #endif | |
6009 | #ifdef SIGTTOU | |
6010 | handle_signal ("SIGTTOU", SIGTTOU); | |
6011 | #endif | |
6012 | #ifdef SIGIO | |
6013 | handle_signal ("SIGIO", SIGIO); | |
6014 | #endif | |
6015 | #ifdef SIGXCPU | |
6016 | handle_signal ("SIGXCPU", SIGXCPU); | |
6017 | #endif | |
6018 | #ifdef SIGXFSZ | |
6019 | handle_signal ("SIGXFSZ", SIGXFSZ); | |
6020 | #endif | |
6021 | #ifdef SIGVTALRM | |
6022 | handle_signal ("SIGVTALRM", SIGVTALRM); | |
6023 | #endif | |
6024 | #ifdef SIGPROF | |
6025 | handle_signal ("SIGPROF", SIGPROF); | |
6026 | #endif | |
6027 | #ifdef SIGWINCH | |
6028 | handle_signal ("SIGWINCH", SIGWINCH); | |
6029 | #endif | |
6030 | #ifdef SIGINFO | |
6031 | handle_signal ("SIGINFO", SIGINFO); | |
6032 | #endif | |
6033 | #ifdef SIGUSR1 | |
6034 | handle_signal ("SIGUSR1", SIGUSR1); | |
6035 | #endif | |
6036 | #ifdef SIGUSR2 | |
6037 | handle_signal ("SIGUSR2", SIGUSR2); | |
6038 | #endif | |
6039 | else | |
9fa195a2 | 6040 | error ("Undefined signal name %s", name); |
4766242d RS |
6041 | } |
6042 | ||
6043 | #undef handle_signal | |
6044 | ||
4766242d | 6045 | return make_number (kill (XINT (pid), XINT (sigcode))); |
d0d6b7c5 JB |
6046 | } |
6047 | ||
6048 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6049 | doc: /* Make PROCESS see end-of-file in its input. |
6050 | EOF comes after any text already sent to it. | |
6051 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6052 | nil, indicating the current buffer's process. | |
6053 | If PROCESS is a network connection, or is a process communicating | |
6054 | through a pipe (as opposed to a pty), then you cannot send any more | |
6055 | text to PROCESS after you call this function. */) | |
6056 | (process) | |
d0d6b7c5 JB |
6057 | Lisp_Object process; |
6058 | { | |
6059 | Lisp_Object proc; | |
de7fbd09 | 6060 | struct coding_system *coding; |
d0d6b7c5 | 6061 | |
e690ca94 KS |
6062 | if (DATAGRAM_CONN_P (process)) |
6063 | return process; | |
6064 | ||
d0d6b7c5 | 6065 | proc = get_process (process); |
de7fbd09 | 6066 | coding = proc_encode_coding_system[XINT (XPROCESS (proc)->outfd)]; |
577d03d5 RS |
6067 | |
6068 | /* Make sure the process is really alive. */ | |
6069 | if (! NILP (XPROCESS (proc)->raw_status_low)) | |
6070 | update_status (XPROCESS (proc)); | |
6071 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6072 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6073 | |
de7fbd09 KH |
6074 | if (CODING_REQUIRE_FLUSHING (coding)) |
6075 | { | |
6076 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6077 | send_process (proc, "", 0, Qnil); | |
6078 | } | |
6079 | ||
d0d6b7c5 | 6080 | #ifdef VMS |
4556b700 | 6081 | send_process (proc, "\032", 1, Qnil); /* ^z */ |
d0d6b7c5 JB |
6082 | #else |
6083 | if (!NILP (XPROCESS (proc)->pty_flag)) | |
4556b700 | 6084 | send_process (proc, "\004", 1, Qnil); |
d0d6b7c5 JB |
6085 | else |
6086 | { | |
4525f571 RS |
6087 | int old_outfd, new_outfd; |
6088 | ||
93853f3d | 6089 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6090 | /* If this is a network connection, or socketpair is used |
6091 | for communication with the subprocess, call shutdown to cause EOF. | |
6092 | (In some old system, shutdown to socketpair doesn't work. | |
6093 | Then we just can't win.) */ | |
6094 | if (NILP (XPROCESS (proc)->pid) | |
6095 | || XINT (XPROCESS (proc)->outfd) == XINT (XPROCESS (proc)->infd)) | |
6096 | shutdown (XINT (XPROCESS (proc)->outfd), 1); | |
6097 | /* In case of socketpair, outfd == infd, so don't close it. */ | |
6098 | if (XINT (XPROCESS (proc)->outfd) != XINT (XPROCESS (proc)->infd)) | |
68c45bf0 | 6099 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6100 | #else /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6101 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6102 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6103 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
4525f571 RS |
6104 | old_outfd = XINT (XPROCESS (proc)->outfd); |
6105 | ||
6106 | if (!proc_encode_coding_system[new_outfd]) | |
6107 | proc_encode_coding_system[new_outfd] | |
6108 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6109 | bcopy (proc_encode_coding_system[old_outfd], | |
6110 | proc_encode_coding_system[new_outfd], | |
6111 | sizeof (struct coding_system)); | |
6112 | bzero (proc_encode_coding_system[old_outfd], | |
6113 | sizeof (struct coding_system)); | |
6114 | ||
6115 | XSETINT (XPROCESS (proc)->outfd, new_outfd); | |
d0d6b7c5 JB |
6116 | } |
6117 | #endif /* VMS */ | |
d0d6b7c5 JB |
6118 | return process; |
6119 | } | |
6120 | ||
6121 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 6122 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 6123 | |
6b53bb85 | 6124 | void |
d0d6b7c5 JB |
6125 | kill_buffer_processes (buffer) |
6126 | Lisp_Object buffer; | |
6127 | { | |
6128 | Lisp_Object tail, proc; | |
6129 | ||
70949dac | 6130 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6131 | { |
70949dac | 6132 | proc = XCDR (XCAR (tail)); |
b5b502d6 | 6133 | if (GC_PROCESSP (proc) |
d0d6b7c5 JB |
6134 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
6135 | { | |
6136 | if (NETCONN_P (proc)) | |
e1ab4959 | 6137 | Fdelete_process (proc); |
a9f2c884 | 6138 | else if (XINT (XPROCESS (proc)->infd) >= 0) |
d0d6b7c5 JB |
6139 | process_send_signal (proc, SIGHUP, Qnil, 1); |
6140 | } | |
6141 | } | |
6142 | } | |
6143 | \f | |
3fed8ad5 GM |
6144 | /* On receipt of a signal that a child status has changed, loop asking |
6145 | about children with changed statuses until the system says there | |
6146 | are no more. | |
177c0ea7 | 6147 | |
3fed8ad5 GM |
6148 | All we do is change the status; we do not run sentinels or print |
6149 | notifications. That is saved for the next time keyboard input is | |
6150 | done, in order to avoid timing errors. | |
6151 | ||
6152 | ** WARNING: this can be called during garbage collection. | |
6153 | Therefore, it must not be fooled by the presence of mark bits in | |
6154 | Lisp objects. | |
6155 | ||
6156 | ** USG WARNING: Although it is not obvious from the documentation | |
6157 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6158 | signal() before executing at least one wait(), otherwise the | |
6159 | handler will be called again, resulting in an infinite loop. The | |
6160 | relevant portion of the documentation reads "SIGCLD signals will be | |
6161 | queued and the signal-catching function will be continually | |
6162 | reentered until the queue is empty". Invoking signal() causes the | |
6163 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
ce38070a JD |
6164 | Inc. |
6165 | ||
6166 | ** Malloc WARNING: This should never call malloc either directly or | |
6167 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 JB |
6168 | |
6169 | SIGTYPE | |
6170 | sigchld_handler (signo) | |
6171 | int signo; | |
6172 | { | |
6173 | int old_errno = errno; | |
6174 | Lisp_Object proc; | |
6175 | register struct Lisp_Process *p; | |
6be429b1 | 6176 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 | 6177 | |
333f1b6f JD |
6178 | SIGNAL_THREAD_CHECK (signo); |
6179 | ||
d0d6b7c5 JB |
6180 | #ifdef BSD4_1 |
6181 | extern int sigheld; | |
6182 | sigheld |= sigbit (SIGCHLD); | |
6183 | #endif | |
6184 | ||
6185 | while (1) | |
6186 | { | |
6187 | register int pid; | |
6188 | WAITTYPE w; | |
6189 | Lisp_Object tail; | |
6190 | ||
6191 | #ifdef WNOHANG | |
6192 | #ifndef WUNTRACED | |
6193 | #define WUNTRACED 0 | |
6194 | #endif /* no WUNTRACED */ | |
6195 | /* Keep trying to get a status until we get a definitive result. */ | |
177c0ea7 | 6196 | do |
d0d6b7c5 JB |
6197 | { |
6198 | errno = 0; | |
6199 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
6200 | } | |
3fed8ad5 | 6201 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6202 | |
6203 | if (pid <= 0) | |
6204 | { | |
3fed8ad5 GM |
6205 | /* PID == 0 means no processes found, PID == -1 means a real |
6206 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6207 | |
6208 | /* USG systems forget handlers when they are used; | |
6209 | must reestablish each time */ | |
3c0ee47b | 6210 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6211 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
6212 | #endif | |
6213 | #ifdef BSD4_1 | |
6214 | sigheld &= ~sigbit (SIGCHLD); | |
6215 | sigrelse (SIGCHLD); | |
6216 | #endif | |
6217 | errno = old_errno; | |
6218 | return; | |
6219 | } | |
6220 | #else | |
6221 | pid = wait (&w); | |
6222 | #endif /* no WNOHANG */ | |
6223 | ||
6224 | /* Find the process that signaled us, and record its status. */ | |
6225 | ||
6226 | p = 0; | |
3fed8ad5 | 6227 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6228 | { |
70949dac | 6229 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6230 | p = XPROCESS (proc); |
3fed8ad5 | 6231 | if (GC_EQ (p->childp, Qt) && XINT (p->pid) == pid) |
d0d6b7c5 JB |
6232 | break; |
6233 | p = 0; | |
6234 | } | |
6235 | ||
6236 | /* Look for an asynchronous process whose pid hasn't been filled | |
6237 | in yet. */ | |
6238 | if (p == 0) | |
3fed8ad5 | 6239 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6240 | { |
70949dac | 6241 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6242 | p = XPROCESS (proc); |
3fed8ad5 | 6243 | if (GC_INTEGERP (p->pid) && XINT (p->pid) == -1) |
d0d6b7c5 JB |
6244 | break; |
6245 | p = 0; | |
6246 | } | |
177c0ea7 | 6247 | |
d0d6b7c5 JB |
6248 | /* Change the status of the process that was found. */ |
6249 | if (p != 0) | |
6250 | { | |
6251 | union { int i; WAITTYPE wt; } u; | |
e98d950b | 6252 | int clear_desc_flag = 0; |
177c0ea7 | 6253 | |
d0d6b7c5 JB |
6254 | XSETINT (p->tick, ++process_tick); |
6255 | u.wt = w; | |
5fc0154c RS |
6256 | XSETINT (p->raw_status_low, u.i & 0xffff); |
6257 | XSETINT (p->raw_status_high, u.i >> 16); | |
177c0ea7 | 6258 | |
d0d6b7c5 | 6259 | /* If process has terminated, stop waiting for its output. */ |
e98d950b RS |
6260 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
6261 | && XINT (p->infd) >= 0) | |
6262 | clear_desc_flag = 1; | |
6263 | ||
6264 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6265 | if (clear_desc_flag) | |
6266 | { | |
6267 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
6268 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
6269 | } | |
6be429b1 | 6270 | |
214d6069 | 6271 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6272 | look around. */ |
6273 | if (input_available_clear_time) | |
6274 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6275 | } |
6276 | ||
6277 | /* There was no asynchronous process found for that id. Check | |
6278 | if we have a synchronous process. */ | |
6279 | else | |
6280 | { | |
6281 | synch_process_alive = 0; | |
6282 | ||
6283 | /* Report the status of the synchronous process. */ | |
6284 | if (WIFEXITED (w)) | |
6285 | synch_process_retcode = WRETCODE (w); | |
6286 | else if (WIFSIGNALED (w)) | |
c22aeff8 | 6287 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6288 | |
214d6069 | 6289 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6290 | look around. */ |
6291 | if (input_available_clear_time) | |
6292 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6293 | } |
6294 | ||
6295 | /* On some systems, we must return right away. | |
6296 | If any more processes want to signal us, we will | |
6297 | get another signal. | |
6298 | Otherwise (on systems that have WNOHANG), loop around | |
6299 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6300 | #if (defined WINDOWSNT \ |
8a2a6032 | 6301 | || (defined USG && !defined GNU_LINUX \ |
4e6277d8 | 6302 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6303 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6304 | signal (signo, sigchld_handler); |
6305 | #endif | |
6306 | errno = old_errno; | |
6307 | return; | |
6308 | #endif /* USG, but not HPUX with WNOHANG */ | |
6309 | } | |
6310 | } | |
6311 | \f | |
6312 | ||
6313 | static Lisp_Object | |
6314 | exec_sentinel_unwind (data) | |
6315 | Lisp_Object data; | |
6316 | { | |
70949dac | 6317 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6318 | return Qnil; |
6319 | } | |
6320 | ||
3b9a3dfa RS |
6321 | static Lisp_Object |
6322 | exec_sentinel_error_handler (error) | |
6323 | Lisp_Object error; | |
6324 | { | |
6325 | cmd_error_internal (error, "error in process sentinel: "); | |
6326 | Vinhibit_quit = Qt; | |
6327 | update_echo_area (); | |
833ba342 | 6328 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6329 | return Qt; |
3b9a3dfa RS |
6330 | } |
6331 | ||
d0d6b7c5 JB |
6332 | static void |
6333 | exec_sentinel (proc, reason) | |
6334 | Lisp_Object proc, reason; | |
6335 | { | |
dfc21838 | 6336 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6337 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6338 | int count = SPECPDL_INDEX (); |
4da2f5be | 6339 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6340 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6341 | |
dfc21838 RS |
6342 | /* No need to gcpro these, because all we do with them later |
6343 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6344 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6345 | XSETBUFFER (obuffer, current_buffer); |
6346 | okeymap = current_buffer->keymap; | |
6347 | ||
d0d6b7c5 JB |
6348 | sentinel = p->sentinel; |
6349 | if (NILP (sentinel)) | |
6350 | return; | |
6351 | ||
6352 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6353 | assure that it gets restored no matter how the sentinel exits. */ | |
6354 | p->sentinel = Qnil; | |
6355 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6356 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6357 | specbind (Qinhibit_quit, Qt); | |
6545aada | 6358 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 6359 | |
4da2f5be RS |
6360 | /* In case we get recursively called, |
6361 | and we already saved the match data nonrecursively, | |
6362 | save the same match data in safely recursive fashion. */ | |
6363 | if (outer_running_asynch_code) | |
6364 | { | |
6365 | Lisp_Object tem; | |
89f2614d KS |
6366 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6367 | restore_search_regs (); | |
6368 | record_unwind_save_match_data (); | |
6369 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6370 | } |
6371 | ||
6372 | /* For speed, if a search happens within this code, | |
6373 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6374 | running_asynch_code = 1; |
4da2f5be | 6375 | |
3b9a3dfa RS |
6376 | internal_condition_case_1 (read_process_output_call, |
6377 | Fcons (sentinel, | |
6378 | Fcons (proc, Fcons (reason, Qnil))), | |
6379 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6380 | exec_sentinel_error_handler); | |
4da2f5be RS |
6381 | |
6382 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6383 | restore_search_regs (); |
4da2f5be | 6384 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6385 | |
6386 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6387 | |
6388 | /* Restore waiting_for_user_input_p as it was | |
6389 | when we were called, in case the filter clobbered it. */ | |
6390 | waiting_for_user_input_p = waiting; | |
6391 | ||
7973cfa8 | 6392 | #if 0 |
dfc21838 RS |
6393 | if (! EQ (Fcurrent_buffer (), obuffer) |
6394 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6395 | #endif |
927e08be RS |
6396 | /* But do it only if the caller is actually going to read events. |
6397 | Otherwise there's no need to make him wake up, and it could | |
6398 | cause trouble (for example it would make Fsit_for return). */ | |
6399 | if (waiting_for_user_input_p == -1) | |
6400 | record_asynch_buffer_change (); | |
8fb3cf64 | 6401 | |
2ea6d561 | 6402 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6403 | } |
6404 | ||
6405 | /* Report all recent events of a change in process status | |
6406 | (either run the sentinel or output a message). | |
b50fe468 RS |
6407 | This is usually done while Emacs is waiting for keyboard input |
6408 | but can be done at other times. */ | |
d0d6b7c5 | 6409 | |
ff6daed3 KS |
6410 | static void |
6411 | status_notify (deleting_process) | |
6412 | struct Lisp_Process *deleting_process; | |
d0d6b7c5 JB |
6413 | { |
6414 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6415 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6416 | struct gcpro gcpro1, gcpro2; |
6417 | ||
2e4149a8 KH |
6418 | tail = Qnil; |
6419 | msg = Qnil; | |
d0d6b7c5 JB |
6420 | /* We need to gcpro tail; if read_process_output calls a filter |
6421 | which deletes a process and removes the cons to which tail points | |
6422 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6423 | reference. */ | |
6424 | GCPRO2 (tail, msg); | |
6425 | ||
30623085 RS |
6426 | /* Set this now, so that if new processes are created by sentinels |
6427 | that we run, we get called again to handle their status changes. */ | |
6428 | update_tick = process_tick; | |
6429 | ||
6430 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
d0d6b7c5 | 6431 | { |
30623085 RS |
6432 | Lisp_Object symbol; |
6433 | register struct Lisp_Process *p; | |
6434 | ||
6435 | proc = Fcdr (Fcar (tail)); | |
6436 | p = XPROCESS (proc); | |
6437 | ||
6438 | if (XINT (p->tick) != XINT (p->update_tick)) | |
d0d6b7c5 | 6439 | { |
30623085 | 6440 | XSETINT (p->update_tick, XINT (p->tick)); |
d0d6b7c5 | 6441 | |
30623085 | 6442 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6443 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6444 | && ! EQ (p->status, Qconnect) |
e690ca94 KS |
6445 | && ! EQ (p->status, Qlisten) |
6446 | && ! EQ (p->command, Qt) /* Network process not stopped. */ | |
4da2f5be | 6447 | && XINT (p->infd) >= 0 |
ff6daed3 | 6448 | && p != deleting_process |
4da2f5be | 6449 | && read_process_output (proc, XINT (p->infd)) > 0); |
d0d6b7c5 | 6450 | |
30623085 | 6451 | buffer = p->buffer; |
d0d6b7c5 | 6452 | |
30623085 RS |
6453 | /* Get the text to use for the message. */ |
6454 | if (!NILP (p->raw_status_low)) | |
6455 | update_status (p); | |
116c423c | 6456 | msg = status_message (p); |
d0d6b7c5 | 6457 | |
30623085 RS |
6458 | /* If process is terminated, deactivate it or delete it. */ |
6459 | symbol = p->status; | |
6460 | if (CONSP (p->status)) | |
70949dac | 6461 | symbol = XCAR (p->status); |
d0d6b7c5 | 6462 | |
30623085 RS |
6463 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6464 | || EQ (symbol, Qclosed)) | |
6465 | { | |
6466 | if (delete_exited_processes) | |
6467 | remove_process (proc); | |
6468 | else | |
6469 | deactivate_process (proc); | |
6470 | } | |
d0d6b7c5 | 6471 | |
0ad61fe7 RS |
6472 | /* The actions above may have further incremented p->tick. |
6473 | So set p->update_tick again | |
6474 | so that an error in the sentinel will not cause | |
6475 | this code to be run again. */ | |
6476 | XSETINT (p->update_tick, XINT (p->tick)); | |
30623085 RS |
6477 | /* Now output the message suitably. */ |
6478 | if (!NILP (p->sentinel)) | |
6479 | exec_sentinel (proc, msg); | |
6480 | /* Don't bother with a message in the buffer | |
6481 | when a process becomes runnable. */ | |
6482 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6483 | { | |
6484 | Lisp_Object ro, tem; | |
6485 | struct buffer *old = current_buffer; | |
d8a2934e RS |
6486 | int opoint, opoint_byte; |
6487 | int before, before_byte; | |
2e4149a8 | 6488 | |
30623085 | 6489 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 6490 | |
30623085 RS |
6491 | /* Avoid error if buffer is deleted |
6492 | (probably that's why the process is dead, too) */ | |
6493 | if (NILP (XBUFFER (buffer)->name)) | |
6494 | continue; | |
6495 | Fset_buffer (buffer); | |
12ca5cdf | 6496 | |
6ec8bbd2 | 6497 | opoint = PT; |
d8a2934e | 6498 | opoint_byte = PT_BYTE; |
30623085 RS |
6499 | /* Insert new output into buffer |
6500 | at the current end-of-output marker, | |
6501 | thus preserving logical ordering of input and output. */ | |
6502 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6503 | Fgoto_char (p->mark); |
30623085 | 6504 | else |
d8a2934e | 6505 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6506 | |
6507 | before = PT; | |
d8a2934e | 6508 | before_byte = PT_BYTE; |
30623085 RS |
6509 | |
6510 | tem = current_buffer->read_only; | |
6511 | current_buffer->read_only = Qnil; | |
6512 | insert_string ("\nProcess "); | |
6513 | Finsert (1, &p->name); | |
6514 | insert_string (" "); | |
6515 | Finsert (1, &msg); | |
6516 | current_buffer->read_only = tem; | |
d8a2934e | 6517 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6518 | |
12ca5cdf | 6519 | if (opoint >= before) |
d8a2934e RS |
6520 | SET_PT_BOTH (opoint + (PT - before), |
6521 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6522 | else |
d8a2934e | 6523 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6524 | |
30623085 | 6525 | set_buffer_internal (old); |
d0d6b7c5 | 6526 | } |
30623085 RS |
6527 | } |
6528 | } /* end for */ | |
d0d6b7c5 JB |
6529 | |
6530 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
3007ebfb | 6531 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 6532 | |
d0d6b7c5 JB |
6533 | UNGCPRO; |
6534 | } | |
0fa1789e KH |
6535 | |
6536 | \f | |
6537 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6538 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6539 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6540 | DECODING will be used to decode subprocess output and ENCODING to | |
6541 | encode subprocess input. */) | |
f3d9532b JB |
6542 | (process, decoding, encoding) |
6543 | register Lisp_Object process, decoding, encoding; | |
0fa1789e KH |
6544 | { |
6545 | register struct Lisp_Process *p; | |
6546 | ||
f3d9532b JB |
6547 | CHECK_PROCESS (process); |
6548 | p = XPROCESS (process); | |
0fa1789e | 6549 | if (XINT (p->infd) < 0) |
d5db4077 | 6550 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
0fa1789e | 6551 | if (XINT (p->outfd) < 0) |
d5db4077 | 6552 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6553 | Fcheck_coding_system (decoding); |
6554 | Fcheck_coding_system (encoding); | |
0fa1789e | 6555 | |
03f04413 KH |
6556 | p->decode_coding_system = decoding; |
6557 | p->encode_coding_system = encoding; | |
f3d9532b | 6558 | setup_process_coding_systems (process); |
0fa1789e KH |
6559 | |
6560 | return Qnil; | |
6561 | } | |
6562 | ||
6563 | DEFUN ("process-coding-system", | |
6564 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6565 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
f3d9532b JB |
6566 | (process) |
6567 | register Lisp_Object process; | |
0fa1789e | 6568 | { |
f3d9532b JB |
6569 | CHECK_PROCESS (process); |
6570 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6571 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6572 | } |
03f04413 KH |
6573 | |
6574 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6575 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6576 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6577 | If FLAG is non-nil, the filter is given multibyte strings. | |
6578 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6579 | all character code conversion except for end-of-line conversion is |
6580 | suppressed. */) | |
f3d9532b JB |
6581 | (process, flag) |
6582 | Lisp_Object process, flag; | |
03f04413 KH |
6583 | { |
6584 | register struct Lisp_Process *p; | |
6585 | ||
f3d9532b JB |
6586 | CHECK_PROCESS (process); |
6587 | p = XPROCESS (process); | |
03f04413 | 6588 | p->filter_multibyte = flag; |
f3d9532b | 6589 | setup_process_coding_systems (process); |
03f04413 KH |
6590 | |
6591 | return Qnil; | |
6592 | } | |
6593 | ||
6594 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6595 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6596 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
f3d9532b JB |
6597 | (process) |
6598 | Lisp_Object process; | |
03f04413 KH |
6599 | { |
6600 | register struct Lisp_Process *p; | |
6601 | ||
f3d9532b JB |
6602 | CHECK_PROCESS (process); |
6603 | p = XPROCESS (process); | |
03f04413 KH |
6604 | |
6605 | return (NILP (p->filter_multibyte) ? Qnil : Qt); | |
6606 | } | |
6607 | ||
6608 | ||
d0d6b7c5 | 6609 | \f |
a69281ff RS |
6610 | /* The first time this is called, assume keyboard input comes from DESC |
6611 | instead of from where we used to expect it. | |
6612 | Subsequent calls mean assume input keyboard can come from DESC | |
6613 | in addition to other places. */ | |
6614 | ||
6615 | static int add_keyboard_wait_descriptor_called_flag; | |
6616 | ||
6617 | void | |
6618 | add_keyboard_wait_descriptor (desc) | |
6619 | int desc; | |
6620 | { | |
6621 | if (! add_keyboard_wait_descriptor_called_flag) | |
6622 | FD_CLR (0, &input_wait_mask); | |
6623 | add_keyboard_wait_descriptor_called_flag = 1; | |
6624 | FD_SET (desc, &input_wait_mask); | |
b5dc1c83 | 6625 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
6626 | if (desc > max_keyboard_desc) |
6627 | max_keyboard_desc = desc; | |
6628 | } | |
6629 | ||
6630 | /* From now on, do not expect DESC to give keyboard input. */ | |
6631 | ||
6632 | void | |
6633 | delete_keyboard_wait_descriptor (desc) | |
6634 | int desc; | |
6635 | { | |
6636 | int fd; | |
6637 | int lim = max_keyboard_desc; | |
6638 | ||
6639 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 6640 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
6641 | |
6642 | if (desc == max_keyboard_desc) | |
6643 | for (fd = 0; fd < lim; fd++) | |
6644 | if (FD_ISSET (fd, &input_wait_mask) | |
6645 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6646 | max_keyboard_desc = fd; | |
6647 | } | |
6648 | ||
6649 | /* Return nonzero if *MASK has a bit set | |
6650 | that corresponds to one of the keyboard input descriptors. */ | |
6651 | ||
ff6daed3 | 6652 | static int |
a69281ff RS |
6653 | keyboard_bit_set (mask) |
6654 | SELECT_TYPE *mask; | |
6655 | { | |
6656 | int fd; | |
6657 | ||
ee8e09af | 6658 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
6659 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6660 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6661 | return 1; | |
6662 | ||
6663 | return 0; | |
6664 | } | |
6665 | \f | |
dfcf069d | 6666 | void |
d0d6b7c5 JB |
6667 | init_process () |
6668 | { | |
6669 | register int i; | |
6670 | ||
6671 | #ifdef SIGCHLD | |
6672 | #ifndef CANNOT_DUMP | |
6673 | if (! noninteractive || initialized) | |
6674 | #endif | |
6675 | signal (SIGCHLD, sigchld_handler); | |
6676 | #endif | |
6677 | ||
6678 | FD_ZERO (&input_wait_mask); | |
a69281ff | 6679 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 6680 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 6681 | max_process_desc = 0; |
dd2281ae | 6682 | |
bad49fc7 KS |
6683 | #ifdef NON_BLOCKING_CONNECT |
6684 | FD_ZERO (&connect_wait_mask); | |
6685 | num_pending_connects = 0; | |
6686 | #endif | |
6687 | ||
2d942bfa KS |
6688 | #ifdef ADAPTIVE_READ_BUFFERING |
6689 | process_output_delay_count = 0; | |
6690 | process_output_skip = 0; | |
6691 | #endif | |
6692 | ||
a69281ff | 6693 | FD_SET (0, &input_wait_mask); |
dd2281ae | 6694 | |
d0d6b7c5 JB |
6695 | Vprocess_alist = Qnil; |
6696 | for (i = 0; i < MAXDESC; i++) | |
6697 | { | |
6698 | chan_process[i] = Qnil; | |
6699 | proc_buffered_char[i] = -1; | |
6700 | } | |
c7580538 KH |
6701 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
6702 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
6703 | #ifdef DATAGRAM_SOCKETS |
6704 | bzero (datagram_address, sizeof datagram_address); | |
6705 | #endif | |
9057ff80 | 6706 | |
c2bd2c26 KS |
6707 | #ifdef HAVE_SOCKETS |
6708 | { | |
6709 | Lisp_Object subfeatures = Qnil; | |
2ccf3102 KS |
6710 | struct socket_options *sopt; |
6711 | ||
9057ff80 KS |
6712 | #define ADD_SUBFEATURE(key, val) \ |
6713 | subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures) | |
6714 | ||
9057ff80 | 6715 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 6716 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
6717 | #endif |
6718 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 6719 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 KS |
6720 | #endif |
6721 | #ifdef HAVE_LOCAL_SOCKETS | |
c2bd2c26 | 6722 | ADD_SUBFEATURE (QCfamily, Qlocal); |
9057ff80 KS |
6723 | #endif |
6724 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 6725 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 6726 | #endif |
a8e8ea61 | 6727 | #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY)) |
c2bd2c26 | 6728 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 6729 | #endif |
2ccf3102 KS |
6730 | |
6731 | for (sopt = socket_options; sopt->name; sopt++) | |
6732 | subfeatures = Fcons (intern (sopt->name), subfeatures); | |
6733 | ||
c2bd2c26 KS |
6734 | Fprovide (intern ("make-network-process"), subfeatures); |
6735 | } | |
6736 | #endif /* HAVE_SOCKETS */ | |
d9e7c622 | 6737 | |
ecc175e2 | 6738 | #if defined (DARWIN) || defined (MAC_OSX) |
db853b7a | 6739 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive |
d9e7c622 ST |
6740 | processes. As such, we only change the default value. */ |
6741 | if (initialized) | |
6742 | { | |
6743 | char *release = get_operating_system_release(); | |
6744 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION | |
6745 | && release[1] == '.')) { | |
6746 | Vprocess_connection_type = Qnil; | |
6747 | } | |
6748 | } | |
6749 | #endif | |
d0d6b7c5 | 6750 | } |
312c9964 | 6751 | |
dfcf069d | 6752 | void |
d0d6b7c5 JB |
6753 | syms_of_process () |
6754 | { | |
d0d6b7c5 JB |
6755 | Qprocessp = intern ("processp"); |
6756 | staticpro (&Qprocessp); | |
6757 | Qrun = intern ("run"); | |
6758 | staticpro (&Qrun); | |
6759 | Qstop = intern ("stop"); | |
6760 | staticpro (&Qstop); | |
6761 | Qsignal = intern ("signal"); | |
6762 | staticpro (&Qsignal); | |
6763 | ||
6764 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
6765 | here again. | |
6766 | ||
6767 | Qexit = intern ("exit"); | |
6768 | staticpro (&Qexit); */ | |
6769 | ||
6770 | Qopen = intern ("open"); | |
6771 | staticpro (&Qopen); | |
6772 | Qclosed = intern ("closed"); | |
6773 | staticpro (&Qclosed); | |
dd2a17ab KS |
6774 | Qconnect = intern ("connect"); |
6775 | staticpro (&Qconnect); | |
6776 | Qfailed = intern ("failed"); | |
6777 | staticpro (&Qfailed); | |
e690ca94 KS |
6778 | Qlisten = intern ("listen"); |
6779 | staticpro (&Qlisten); | |
6780 | Qlocal = intern ("local"); | |
6781 | staticpro (&Qlocal); | |
9057ff80 KS |
6782 | Qdatagram = intern ("datagram"); |
6783 | staticpro (&Qdatagram); | |
e690ca94 KS |
6784 | |
6785 | QCname = intern (":name"); | |
6786 | staticpro (&QCname); | |
6787 | QCbuffer = intern (":buffer"); | |
6788 | staticpro (&QCbuffer); | |
6789 | QChost = intern (":host"); | |
6790 | staticpro (&QChost); | |
6791 | QCservice = intern (":service"); | |
6792 | staticpro (&QCservice); | |
9057ff80 KS |
6793 | QCtype = intern (":type"); |
6794 | staticpro (&QCtype); | |
e690ca94 KS |
6795 | QClocal = intern (":local"); |
6796 | staticpro (&QClocal); | |
6797 | QCremote = intern (":remote"); | |
6798 | staticpro (&QCremote); | |
6799 | QCcoding = intern (":coding"); | |
6800 | staticpro (&QCcoding); | |
6801 | QCserver = intern (":server"); | |
6802 | staticpro (&QCserver); | |
e690ca94 KS |
6803 | QCnowait = intern (":nowait"); |
6804 | staticpro (&QCnowait); | |
e690ca94 KS |
6805 | QCsentinel = intern (":sentinel"); |
6806 | staticpro (&QCsentinel); | |
6807 | QClog = intern (":log"); | |
6808 | staticpro (&QClog); | |
6809 | QCnoquery = intern (":noquery"); | |
6810 | staticpro (&QCnoquery); | |
6811 | QCstop = intern (":stop"); | |
6812 | staticpro (&QCstop); | |
6813 | QCoptions = intern (":options"); | |
6814 | staticpro (&QCoptions); | |
faa7db08 KS |
6815 | QCplist = intern (":plist"); |
6816 | staticpro (&QCplist); | |
7392e23c KS |
6817 | QCfilter_multibyte = intern (":filter-multibyte"); |
6818 | staticpro (&QCfilter_multibyte); | |
177c0ea7 | 6819 | |
6545aada RS |
6820 | Qlast_nonmenu_event = intern ("last-nonmenu-event"); |
6821 | staticpro (&Qlast_nonmenu_event); | |
6822 | ||
d0d6b7c5 JB |
6823 | staticpro (&Vprocess_alist); |
6824 | ||
6825 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
fdb82f93 PJ |
6826 | doc: /* *Non-nil means delete processes immediately when they exit. |
6827 | nil means don't delete them until `list-processes' is run. */); | |
d0d6b7c5 JB |
6828 | |
6829 | delete_exited_processes = 1; | |
6830 | ||
6831 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
6832 | doc: /* Control type of device used to communicate with subprocesses. |
6833 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
6834 | The value has no effect if the system has no ptys or if all ptys are busy: | |
6835 | then a pipe is used in any case. | |
6836 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
6837 | Vprocess_connection_type = Qt; |
6838 | ||
2d942bfa KS |
6839 | #ifdef ADAPTIVE_READ_BUFFERING |
6840 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
6841 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
f3d9532b | 6842 | On some systems, when Emacs reads the output from a subprocess, the output data |
2d942bfa | 6843 | is read in very small blocks, potentially resulting in very poor performance. |
2de35a25 | 6844 | This behavior can be remedied to some extent by setting this variable to a |
2d942bfa | 6845 | non-nil value, as it will automatically delay reading from such processes, to |
f3d9532b | 6846 | allowing them to produce more output before Emacs tries to read it. |
2d942bfa KS |
6847 | If the value is t, the delay is reset after each write to the process; any other |
6848 | non-nil value means that the delay is not reset on write. | |
6849 | The variable takes effect when `start-process' is called. */); | |
6850 | Vprocess_adaptive_read_buffering = Qt; | |
6851 | #endif | |
6852 | ||
d0d6b7c5 JB |
6853 | defsubr (&Sprocessp); |
6854 | defsubr (&Sget_process); | |
6855 | defsubr (&Sget_buffer_process); | |
6856 | defsubr (&Sdelete_process); | |
6857 | defsubr (&Sprocess_status); | |
6858 | defsubr (&Sprocess_exit_status); | |
6859 | defsubr (&Sprocess_id); | |
6860 | defsubr (&Sprocess_name); | |
3b9a3dfa | 6861 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
6862 | defsubr (&Sprocess_command); |
6863 | defsubr (&Sset_process_buffer); | |
6864 | defsubr (&Sprocess_buffer); | |
6865 | defsubr (&Sprocess_mark); | |
6866 | defsubr (&Sset_process_filter); | |
6867 | defsubr (&Sprocess_filter); | |
6868 | defsubr (&Sset_process_sentinel); | |
6869 | defsubr (&Sprocess_sentinel); | |
de282a05 | 6870 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
6871 | defsubr (&Sset_process_inherit_coding_system_flag); |
6872 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
6873 | defsubr (&Sset_process_query_on_exit_flag); |
6874 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 6875 | defsubr (&Sprocess_contact); |
faa7db08 KS |
6876 | defsubr (&Sprocess_plist); |
6877 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
6878 | defsubr (&Slist_processes); |
6879 | defsubr (&Sprocess_list); | |
6880 | defsubr (&Sstart_process); | |
6881 | #ifdef HAVE_SOCKETS | |
2ccf3102 | 6882 | defsubr (&Sset_network_process_option); |
e690ca94 | 6883 | defsubr (&Smake_network_process); |
991234f0 | 6884 | defsubr (&Sformat_network_address); |
b8c7fd71 KS |
6885 | #endif /* HAVE_SOCKETS */ |
6886 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
161933c7 KS |
6887 | #ifdef SIOCGIFCONF |
6888 | defsubr (&Snetwork_interface_list); | |
6889 | #endif | |
6890 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
2ccf3102 | 6891 | defsubr (&Snetwork_interface_info); |
161933c7 | 6892 | #endif |
b8c7fd71 | 6893 | #endif /* HAVE_SOCKETS ... */ |
e690ca94 KS |
6894 | #ifdef DATAGRAM_SOCKETS |
6895 | defsubr (&Sprocess_datagram_address); | |
6896 | defsubr (&Sset_process_datagram_address); | |
6897 | #endif | |
d0d6b7c5 JB |
6898 | defsubr (&Saccept_process_output); |
6899 | defsubr (&Sprocess_send_region); | |
6900 | defsubr (&Sprocess_send_string); | |
6901 | defsubr (&Sinterrupt_process); | |
6902 | defsubr (&Skill_process); | |
6903 | defsubr (&Squit_process); | |
6904 | defsubr (&Sstop_process); | |
6905 | defsubr (&Scontinue_process); | |
b81ea5ef | 6906 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
6907 | defsubr (&Sprocess_send_eof); |
6908 | defsubr (&Ssignal_process); | |
6909 | defsubr (&Swaiting_for_user_input_p); | |
6910 | /* defsubr (&Sprocess_connection); */ | |
0fa1789e KH |
6911 | defsubr (&Sset_process_coding_system); |
6912 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
6913 | defsubr (&Sset_process_filter_multibyte); |
6914 | defsubr (&Sprocess_filter_multibyte_p); | |
d0d6b7c5 JB |
6915 | } |
6916 | ||
6720a7fb JB |
6917 | \f |
6918 | #else /* not subprocesses */ | |
6919 | ||
6920 | #include <sys/types.h> | |
6921 | #include <errno.h> | |
6922 | ||
6923 | #include "lisp.h" | |
6924 | #include "systime.h" | |
52a1b894 EZ |
6925 | #include "charset.h" |
6926 | #include "coding.h" | |
6720a7fb | 6927 | #include "termopts.h" |
81afb6d1 | 6928 | #include "sysselect.h" |
6720a7fb | 6929 | |
ff11dfa1 | 6930 | extern int frame_garbaged; |
6720a7fb | 6931 | |
f694e5d2 KH |
6932 | extern EMACS_TIME timer_check (); |
6933 | extern int timers_run; | |
6720a7fb | 6934 | |
9057ff80 KS |
6935 | Lisp_Object QCtype; |
6936 | ||
6720a7fb JB |
6937 | /* As described above, except assuming that there are no subprocesses: |
6938 | ||
6939 | Wait for timeout to elapse and/or keyboard input to be available. | |
6940 | ||
6941 | time_limit is: | |
6942 | timeout in seconds, or | |
6943 | zero for no limit, or | |
6944 | -1 means gobble data immediately available but don't wait for any. | |
6945 | ||
f76475ad | 6946 | read_kbd is a Lisp_Object: |
6720a7fb JB |
6947 | 0 to ignore keyboard input, or |
6948 | 1 to return when input is available, or | |
6949 | -1 means caller will actually read the input, so don't throw to | |
6950 | the quit handler. | |
b89a415a KS |
6951 | |
6952 | see full version for other parameters. We know that wait_proc will | |
6953 | always be NULL, since `subprocesses' isn't defined. | |
6720a7fb JB |
6954 | |
6955 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 6956 | output that arrives. |
6720a7fb | 6957 | |
eb8c3be9 | 6958 | Return true iff we received input from any process. */ |
6720a7fb JB |
6959 | |
6960 | int | |
214d6069 KS |
6961 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
6962 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
6963 | int time_limit, microsecs, read_kbd, do_display; |
6964 | Lisp_Object wait_for_cell; | |
6965 | struct Lisp_Process *wait_proc; | |
6966 | int just_wait_proc; | |
6720a7fb | 6967 | { |
52fd88d3 | 6968 | register int nfds; |
f694e5d2 | 6969 | EMACS_TIME end_time, timeout; |
8db121c4 | 6970 | SELECT_TYPE waitchannels; |
f694e5d2 | 6971 | int xerrno; |
6720a7fb JB |
6972 | |
6973 | /* What does time_limit really mean? */ | |
6974 | if (time_limit || microsecs) | |
6975 | { | |
6720a7fb | 6976 | EMACS_GET_TIME (end_time); |
52fd88d3 | 6977 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
6978 | EMACS_ADD_TIME (end_time, end_time, timeout); |
6979 | } | |
6720a7fb JB |
6980 | |
6981 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 6982 | and then turn off any other atimers, |
6720a7fb | 6983 | because the select emulator uses alarms. */ |
75eb23f1 | 6984 | stop_polling (); |
30904ab7 | 6985 | turn_on_atimers (0); |
6720a7fb | 6986 | |
52fd88d3 | 6987 | while (1) |
6720a7fb | 6988 | { |
bae8d137 | 6989 | int timeout_reduced_for_timers = 0; |
6720a7fb | 6990 | |
6720a7fb JB |
6991 | /* If calling from keyboard input, do not quit |
6992 | since we want to return C-g as an input character. | |
6993 | Otherwise, do pending quit if requested. */ | |
b89a415a | 6994 | if (read_kbd >= 0) |
6720a7fb JB |
6995 | QUIT; |
6996 | ||
0a65b032 | 6997 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6998 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
6999 | break; |
7000 | ||
bae8d137 RS |
7001 | /* Compute time from now till when time limit is up */ |
7002 | /* Exit if already run out */ | |
52fd88d3 EZ |
7003 | if (time_limit == -1) |
7004 | { | |
7005 | /* -1 specified for timeout means | |
7006 | gobble output available now | |
7007 | but don't wait at all. */ | |
7008 | ||
7009 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
7010 | } | |
7011 | else if (time_limit || microsecs) | |
6720a7fb | 7012 | { |
f694e5d2 KH |
7013 | EMACS_GET_TIME (timeout); |
7014 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
7015 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
7016 | break; |
7017 | } | |
52fd88d3 EZ |
7018 | else |
7019 | { | |
7020 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
7021 | } | |
6720a7fb | 7022 | |
bae8d137 RS |
7023 | /* If our caller will not immediately handle keyboard events, |
7024 | run timer events directly. | |
7025 | (Callers that will immediately read keyboard events | |
7026 | call timer_delay on their own.) */ | |
f3fbd155 | 7027 | if (NILP (wait_for_cell)) |
bae8d137 RS |
7028 | { |
7029 | EMACS_TIME timer_delay; | |
0a65b032 | 7030 | |
9baacf76 | 7031 | do |
0a65b032 | 7032 | { |
9baacf76 GM |
7033 | int old_timers_run = timers_run; |
7034 | timer_delay = timer_check (1); | |
7035 | if (timers_run != old_timers_run && do_display) | |
7036 | /* We must retry, since a timer may have requeued itself | |
7037 | and that could alter the time delay. */ | |
3007ebfb | 7038 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
7039 | else |
7040 | break; | |
0a65b032 | 7041 | } |
9baacf76 | 7042 | while (!detect_input_pending ()); |
0a65b032 | 7043 | |
52fd88d3 | 7044 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7045 | if (read_kbd != 0 |
52fd88d3 EZ |
7046 | && requeued_events_pending_p ()) |
7047 | break; | |
7048 | ||
f694e5d2 | 7049 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
7050 | { |
7051 | EMACS_TIME difference; | |
f694e5d2 | 7052 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
7053 | if (EMACS_TIME_NEG_P (difference)) |
7054 | { | |
f694e5d2 | 7055 | timeout = timer_delay; |
bae8d137 RS |
7056 | timeout_reduced_for_timers = 1; |
7057 | } | |
7058 | } | |
7059 | } | |
7060 | ||
6720a7fb JB |
7061 | /* Cause C-g and alarm signals to take immediate action, |
7062 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7063 | if (read_kbd < 0) |
6720a7fb JB |
7064 | set_waiting_for_input (&timeout); |
7065 | ||
0a65b032 RS |
7066 | /* Wait till there is something to do. */ |
7067 | ||
b89a415a | 7068 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
7069 | FD_ZERO (&waitchannels); |
7070 | else | |
7071 | FD_SET (0, &waitchannels); | |
7072 | ||
ff11dfa1 | 7073 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7074 | reprocess its display stuff. */ |
5164ee8e | 7075 | if (frame_garbaged && do_display) |
0a65b032 RS |
7076 | { |
7077 | clear_waiting_for_input (); | |
3007ebfb | 7078 | redisplay_preserve_echo_area (15); |
b89a415a | 7079 | if (read_kbd < 0) |
0a65b032 RS |
7080 | set_waiting_for_input (&timeout); |
7081 | } | |
6720a7fb | 7082 | |
b89a415a | 7083 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
7084 | { |
7085 | nfds = 0; | |
7086 | FD_ZERO (&waitchannels); | |
7087 | } | |
7088 | else | |
7089 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7090 | &timeout); | |
f694e5d2 KH |
7091 | |
7092 | xerrno = errno; | |
6720a7fb JB |
7093 | |
7094 | /* Make C-g and alarm signals set flags again */ | |
7095 | clear_waiting_for_input (); | |
7096 | ||
7097 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7098 | do_pending_window_change (0); |
6720a7fb | 7099 | |
f694e5d2 KH |
7100 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7101 | /* We waited the full specified time, so return now. */ | |
7102 | break; | |
7103 | ||
6720a7fb JB |
7104 | if (nfds == -1) |
7105 | { | |
7106 | /* If the system call was interrupted, then go around the | |
7107 | loop again. */ | |
f694e5d2 | 7108 | if (xerrno == EINTR) |
8db121c4 | 7109 | FD_ZERO (&waitchannels); |
f694e5d2 | 7110 | else |
68c45bf0 | 7111 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb JB |
7112 | } |
7113 | #ifdef sun | |
7114 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) | |
7115 | /* System sometimes fails to deliver SIGIO. */ | |
7116 | kill (getpid (), SIGIO); | |
7117 | #endif | |
7324d660 | 7118 | #ifdef SIGIO |
b89a415a | 7119 | if (read_kbd && interrupt_input && (waitchannels & 1)) |
e643c5be | 7120 | kill (getpid (), SIGIO); |
7324d660 | 7121 | #endif |
6720a7fb | 7122 | |
f694e5d2 KH |
7123 | /* Check for keyboard input */ |
7124 | ||
b89a415a | 7125 | if (read_kbd |
78c1afb6 | 7126 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7127 | { |
78c1afb6 | 7128 | swallow_events (do_display); |
f694e5d2 | 7129 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7130 | break; |
78c1afb6 EZ |
7131 | } |
7132 | ||
52fd88d3 | 7133 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7134 | if (read_kbd |
52fd88d3 EZ |
7135 | && requeued_events_pending_p ()) |
7136 | break; | |
7137 | ||
f854a00b RS |
7138 | /* If wait_for_cell. check for keyboard input |
7139 | but don't run any timers. | |
7140 | ??? (It seems wrong to me to check for keyboard | |
7141 | input at all when wait_for_cell, but the code | |
7142 | has been this way since July 1994. | |
7143 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7144 | if (! NILP (wait_for_cell) |
f854a00b RS |
7145 | && detect_input_pending ()) |
7146 | { | |
7147 | swallow_events (do_display); | |
7148 | if (detect_input_pending ()) | |
7149 | break; | |
7150 | } | |
7151 | ||
0a65b032 | 7152 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7153 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7154 | break; |
6720a7fb JB |
7155 | } |
7156 | ||
a87b802f JB |
7157 | start_polling (); |
7158 | ||
6720a7fb JB |
7159 | return 0; |
7160 | } | |
7161 | ||
7162 | ||
e2ba787b PJ |
7163 | /* Don't confuse make-docfile by having two doc strings for this function. |
7164 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 7165 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
7166 | 0) |
7167 | (name) | |
6720a7fb JB |
7168 | register Lisp_Object name; |
7169 | { | |
7170 | return Qnil; | |
7171 | } | |
7172 | ||
e2ba787b PJ |
7173 | /* Don't confuse make-docfile by having two doc strings for this function. |
7174 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 7175 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7176 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7177 | 1, 1, 0, | |
7178 | 0) | |
7179 | (process) | |
52a1b894 EZ |
7180 | register Lisp_Object process; |
7181 | { | |
7182 | /* Ignore the argument and return the value of | |
7183 | inherit-process-coding-system. */ | |
7184 | return inherit_process_coding_system ? Qt : Qnil; | |
7185 | } | |
7186 | ||
6720a7fb JB |
7187 | /* Kill all processes associated with `buffer'. |
7188 | If `buffer' is nil, kill all processes. | |
7189 | Since we have no subprocesses, this does nothing. */ | |
7190 | ||
d9bb0c32 | 7191 | void |
6720a7fb JB |
7192 | kill_buffer_processes (buffer) |
7193 | Lisp_Object buffer; | |
7194 | { | |
7195 | } | |
7196 | ||
02b9b4fd | 7197 | void |
6720a7fb JB |
7198 | init_process () |
7199 | { | |
7200 | } | |
7201 | ||
02b9b4fd | 7202 | void |
6720a7fb JB |
7203 | syms_of_process () |
7204 | { | |
9057ff80 KS |
7205 | QCtype = intern (":type"); |
7206 | staticpro (&QCtype); | |
7207 | ||
6720a7fb | 7208 | defsubr (&Sget_buffer_process); |
52a1b894 | 7209 | defsubr (&Sprocess_inherit_coding_system_flag); |
6720a7fb JB |
7210 | } |
7211 | ||
7212 | \f | |
7213 | #endif /* not subprocesses */ | |
ab5796a9 MB |
7214 | |
7215 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
7216 | (do not change this comment) */ |