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; |
e1652a86 KS |
143 | Lisp_Object Qlocal, Qipv4, Qdatagram; |
144 | #ifdef AF_INET6 | |
145 | Lisp_Object Qipv6; | |
146 | #endif | |
9057ff80 | 147 | Lisp_Object QCname, QCbuffer, QChost, QCservice, QCtype; |
e690ca94 | 148 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 149 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 150 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
7392e23c | 151 | Lisp_Object QCfilter_multibyte; |
6545aada | 152 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
153 | /* QCfamily is declared and initialized in xfaces.c, |
154 | QCfilter in keyboard.c. */ | |
155 | extern Lisp_Object QCfamily, QCfilter; | |
156 | ||
d0d6b7c5 JB |
157 | /* Qexit is declared and initialized in eval.c. */ |
158 | ||
e0f712ba AC |
159 | /* QCfamily is defined in xfaces.c. */ |
160 | extern Lisp_Object QCfamily; | |
161 | /* QCfilter is defined in keyboard.c. */ | |
162 | extern Lisp_Object QCfilter; | |
163 | ||
d0d6b7c5 | 164 | /* a process object is a network connection when its childp field is neither |
365aee82 | 165 | Qt nor Qnil but is instead a property list (KEY VAL ...). */ |
d0d6b7c5 JB |
166 | |
167 | #ifdef HAVE_SOCKETS | |
de282a05 | 168 | #define NETCONN_P(p) (GC_CONSP (XPROCESS (p)->childp)) |
e690ca94 | 169 | #define NETCONN1_P(p) (GC_CONSP ((p)->childp)) |
d0d6b7c5 JB |
170 | #else |
171 | #define NETCONN_P(p) 0 | |
e690ca94 | 172 | #define NETCONN1_P(p) 0 |
d0d6b7c5 JB |
173 | #endif /* HAVE_SOCKETS */ |
174 | ||
175 | /* Define first descriptor number available for subprocesses. */ | |
176 | #ifdef VMS | |
177 | #define FIRST_PROC_DESC 1 | |
178 | #else /* Not VMS */ | |
179 | #define FIRST_PROC_DESC 3 | |
180 | #endif | |
181 | ||
182 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
183 | testing SIGCHLD. */ | |
184 | ||
185 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
186 | #define SIGCHLD SIGCLD | |
187 | #endif /* SIGCLD */ | |
188 | ||
189 | #include "syssignal.h" | |
190 | ||
889255b4 | 191 | #include "syswait.h" |
d0d6b7c5 | 192 | |
d9e7c622 | 193 | extern char *get_operating_system_release (); |
41d03b9a | 194 | |
3ec68006 | 195 | #ifndef USE_CRT_DLL |
b062d1fe | 196 | extern int errno; |
3ec68006 | 197 | #endif |
b062d1fe | 198 | #ifdef VMS |
d0d6b7c5 | 199 | extern char *sys_errlist[]; |
b062d1fe | 200 | #endif |
d0d6b7c5 | 201 | |
5f0929a7 RS |
202 | #ifndef HAVE_H_ERRNO |
203 | extern int h_errno; | |
204 | #endif | |
205 | ||
d0d6b7c5 JB |
206 | /* t means use pty, nil means use a pipe, |
207 | maybe other values to come. */ | |
dd2281ae | 208 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 JB |
209 | |
210 | #ifdef SKTPAIR | |
211 | #ifndef HAVE_SOCKETS | |
212 | #include <sys/socket.h> | |
213 | #endif | |
214 | #endif /* SKTPAIR */ | |
215 | ||
17d02632 KH |
216 | /* These next two vars are non-static since sysdep.c uses them in the |
217 | emulation of `select'. */ | |
d0d6b7c5 | 218 | /* Number of events of change of status of a process. */ |
17d02632 | 219 | int process_tick; |
d0d6b7c5 | 220 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 221 | int update_tick; |
d0d6b7c5 | 222 | |
dd2a17ab KS |
223 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
224 | ||
225 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
226 | #undef NON_BLOCKING_CONNECT | |
227 | #else | |
228 | #ifndef NON_BLOCKING_CONNECT | |
229 | #ifdef HAVE_SOCKETS | |
230 | #ifdef HAVE_SELECT | |
231 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
232 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
233 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
234 | #define NON_BLOCKING_CONNECT | |
235 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
236 | #endif /* O_NONBLOCK || O_NDELAY */ | |
237 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
238 | #endif /* HAVE_SELECT */ | |
239 | #endif /* HAVE_SOCKETS */ | |
240 | #endif /* NON_BLOCKING_CONNECT */ | |
241 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
242 | ||
e690ca94 KS |
243 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
244 | this system. We need to read full packets, so we need a | |
245 | "non-destructive" select. So we require either native select, | |
246 | or emulation of select using FIONREAD. */ | |
247 | ||
e690ca94 KS |
248 | #ifdef BROKEN_DATAGRAM_SOCKETS |
249 | #undef DATAGRAM_SOCKETS | |
250 | #else | |
251 | #ifndef DATAGRAM_SOCKETS | |
252 | #ifdef HAVE_SOCKETS | |
253 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
254 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
255 | #define DATAGRAM_SOCKETS | |
256 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
257 | #endif /* HAVE_SELECT || FIONREAD */ | |
258 | #endif /* HAVE_SOCKETS */ | |
259 | #endif /* DATAGRAM_SOCKETS */ | |
260 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
261 | ||
dd2a17ab KS |
262 | #ifdef TERM |
263 | #undef NON_BLOCKING_CONNECT | |
e690ca94 | 264 | #undef DATAGRAM_SOCKETS |
dd2a17ab KS |
265 | #endif |
266 | ||
2d942bfa KS |
267 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
268 | #ifdef EMACS_HAS_USECS | |
269 | #define ADAPTIVE_READ_BUFFERING | |
270 | #endif | |
271 | #endif | |
272 | ||
273 | #ifdef ADAPTIVE_READ_BUFFERING | |
274 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
275 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
276 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
277 | ||
db853b7a KS |
278 | /* Number of processes which have a non-zero read_output_delay, |
279 | and therefore might be delayed for adaptive read buffering. */ | |
2d942bfa KS |
280 | |
281 | static int process_output_delay_count; | |
282 | ||
db853b7a | 283 | /* Non-zero if any process has non-nil read_output_skip. */ |
2d942bfa KS |
284 | |
285 | static int process_output_skip; | |
286 | ||
287 | /* Non-nil means to delay reading process output to improve buffering. | |
288 | A value of t means that delay is reset after each send, any other | |
db853b7a KS |
289 | non-nil value does not reset the delay. A value of nil disables |
290 | adaptive read buffering completely. */ | |
2d942bfa KS |
291 | static Lisp_Object Vprocess_adaptive_read_buffering; |
292 | #else | |
293 | #define process_output_delay_count 0 | |
294 | #endif | |
295 | ||
e690ca94 | 296 | |
5886acf9 | 297 | #include "sysselect.h" |
d0d6b7c5 | 298 | |
ff6daed3 KS |
299 | static int keyboard_bit_set P_ ((SELECT_TYPE *)); |
300 | static void deactivate_process P_ ((Lisp_Object)); | |
301 | static void status_notify P_ ((struct Lisp_Process *)); | |
302 | static int read_process_output P_ ((Lisp_Object, int)); | |
41d03b9a | 303 | |
583dcae4 | 304 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 305 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 306 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
307 | #define POLL_FOR_INPUT |
308 | #endif | |
309 | ||
a69281ff | 310 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 311 | |
dd2281ae RS |
312 | static SELECT_TYPE input_wait_mask; |
313 | ||
a69281ff RS |
314 | /* Mask that excludes keyboard input descriptor (s). */ |
315 | ||
316 | static SELECT_TYPE non_keyboard_wait_mask; | |
317 | ||
b5dc1c83 RS |
318 | /* Mask that excludes process input descriptor (s). */ |
319 | ||
320 | static SELECT_TYPE non_process_wait_mask; | |
321 | ||
bad49fc7 | 322 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
323 | /* Mask of bits indicating the descriptors that we wait for connect to |
324 | complete on. Once they complete, they are removed from this mask | |
325 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
326 | ||
327 | static SELECT_TYPE connect_wait_mask; | |
328 | ||
329 | /* Number of bits set in connect_wait_mask. */ | |
330 | static int num_pending_connects; | |
331 | ||
bad49fc7 KS |
332 | #define IF_NON_BLOCKING_CONNECT(s) s |
333 | #else | |
334 | #define IF_NON_BLOCKING_CONNECT(s) | |
335 | #endif | |
336 | ||
7d0e672e RS |
337 | /* The largest descriptor currently in use for a process object. */ |
338 | static int max_process_desc; | |
339 | ||
a69281ff RS |
340 | /* The largest descriptor currently in use for keyboard input. */ |
341 | static int max_keyboard_desc; | |
d0d6b7c5 | 342 | |
dd2281ae RS |
343 | /* Nonzero means delete a process right away if it exits. */ |
344 | static int delete_exited_processes; | |
d0d6b7c5 JB |
345 | |
346 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 347 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
348 | |
349 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 350 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
351 | |
352 | /* Buffered-ahead input char from process, indexed by channel. | |
353 | -1 means empty (no char is buffered). | |
354 | Used on sys V where the only way to tell if there is any | |
355 | output from the process is to read at least one char. | |
356 | Always -1 on systems that support FIONREAD. */ | |
357 | ||
e98d950b RS |
358 | /* Don't make static; need to access externally. */ |
359 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 360 | |
0fa1789e | 361 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
362 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
363 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 364 | |
e690ca94 KS |
365 | #ifdef DATAGRAM_SOCKETS |
366 | /* Table of `partner address' for datagram sockets. */ | |
367 | struct sockaddr_and_len { | |
368 | struct sockaddr *sa; | |
369 | int len; | |
370 | } datagram_address[MAXDESC]; | |
371 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
bed9664a | 372 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0) |
e690ca94 KS |
373 | #else |
374 | #define DATAGRAM_CHAN_P(chan) (0) | |
375 | #define DATAGRAM_CONN_P(proc) (0) | |
376 | #endif | |
377 | ||
dd2281ae | 378 | static Lisp_Object get_process (); |
dd2a17ab | 379 | static void exec_sentinel (); |
93b4f699 | 380 | |
fb4c3627 | 381 | extern EMACS_TIME timer_check (); |
5de50bfb | 382 | extern int timers_run; |
fb4c3627 | 383 | |
93b4f699 RS |
384 | /* Maximum number of bytes to send to a pty without an eof. */ |
385 | static int pty_max_bytes; | |
3b9a3dfa | 386 | |
875e6b94 | 387 | #ifdef HAVE_PTYS |
e62cab61 DL |
388 | #ifdef HAVE_PTY_H |
389 | #include <pty.h> | |
390 | #endif | |
875e6b94 | 391 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
392 | |
393 | static char pty_name[24]; | |
875e6b94 | 394 | #endif |
d0d6b7c5 JB |
395 | \f |
396 | /* Compute the Lisp form of the process status, p->status, from | |
397 | the numeric status that was returned by `wait'. */ | |
398 | ||
ff6daed3 | 399 | static Lisp_Object status_convert (); |
f9738840 | 400 | |
ff6daed3 | 401 | static void |
d0d6b7c5 JB |
402 | update_status (p) |
403 | struct Lisp_Process *p; | |
404 | { | |
405 | union { int i; WAITTYPE wt; } u; | |
406 | u.i = XFASTINT (p->raw_status_low) + (XFASTINT (p->raw_status_high) << 16); | |
407 | p->status = status_convert (u.wt); | |
408 | p->raw_status_low = Qnil; | |
409 | p->raw_status_high = Qnil; | |
410 | } | |
411 | ||
177c0ea7 | 412 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
413 | the list that we use internally. */ |
414 | ||
ff6daed3 | 415 | static Lisp_Object |
d0d6b7c5 JB |
416 | status_convert (w) |
417 | WAITTYPE w; | |
418 | { | |
419 | if (WIFSTOPPED (w)) | |
420 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
421 | else if (WIFEXITED (w)) | |
422 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
423 | WCOREDUMP (w) ? Qt : Qnil)); | |
424 | else if (WIFSIGNALED (w)) | |
425 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
426 | WCOREDUMP (w) ? Qt : Qnil)); | |
427 | else | |
428 | return Qrun; | |
429 | } | |
430 | ||
431 | /* Given a status-list, extract the three pieces of information | |
432 | and store them individually through the three pointers. */ | |
433 | ||
ff6daed3 | 434 | static void |
d0d6b7c5 JB |
435 | decode_status (l, symbol, code, coredump) |
436 | Lisp_Object l; | |
437 | Lisp_Object *symbol; | |
438 | int *code; | |
439 | int *coredump; | |
440 | { | |
441 | Lisp_Object tem; | |
442 | ||
bcd69aea | 443 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
444 | { |
445 | *symbol = l; | |
446 | *code = 0; | |
447 | *coredump = 0; | |
448 | } | |
449 | else | |
450 | { | |
70949dac KR |
451 | *symbol = XCAR (l); |
452 | tem = XCDR (l); | |
453 | *code = XFASTINT (XCAR (tem)); | |
454 | tem = XCDR (tem); | |
d0d6b7c5 JB |
455 | *coredump = !NILP (tem); |
456 | } | |
457 | } | |
458 | ||
459 | /* Return a string describing a process status list. */ | |
460 | ||
116c423c KS |
461 | static Lisp_Object |
462 | status_message (p) | |
463 | struct Lisp_Process *p; | |
d0d6b7c5 | 464 | { |
116c423c | 465 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
466 | Lisp_Object symbol; |
467 | int code, coredump; | |
468 | Lisp_Object string, string2; | |
469 | ||
470 | decode_status (status, &symbol, &code, &coredump); | |
471 | ||
472 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
473 | { | |
68c45bf0 | 474 | char *signame; |
ca9c0567 | 475 | synchronize_system_messages_locale (); |
68c45bf0 | 476 | signame = strsignal (code); |
b97ad9ea RS |
477 | if (signame == 0) |
478 | signame = "unknown"; | |
479 | string = build_string (signame); | |
d0d6b7c5 | 480 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
a814cc69 | 481 | SSET (string, 0, DOWNCASE (SREF (string, 0))); |
d0d6b7c5 JB |
482 | return concat2 (string, string2); |
483 | } | |
484 | else if (EQ (symbol, Qexit)) | |
485 | { | |
116c423c KS |
486 | if (NETCONN1_P (p)) |
487 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
488 | if (code == 0) |
489 | return build_string ("finished\n"); | |
f2980264 | 490 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 491 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
492 | return concat3 (build_string ("exited abnormally with code "), |
493 | string, string2); | |
d0d6b7c5 | 494 | } |
dd2a17ab KS |
495 | else if (EQ (symbol, Qfailed)) |
496 | { | |
497 | string = Fnumber_to_string (make_number (code)); | |
498 | string2 = build_string ("\n"); | |
e690ca94 KS |
499 | return concat3 (build_string ("failed with code "), |
500 | string, string2); | |
dd2a17ab | 501 | } |
d0d6b7c5 JB |
502 | else |
503 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
504 | } | |
505 | \f | |
506 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 507 | |
875e6b94 KH |
508 | /* Open an available pty, returning a file descriptor. |
509 | Return -1 on failure. | |
510 | The file name of the terminal corresponding to the pty | |
511 | is left in the variable pty_name. */ | |
512 | ||
ff6daed3 | 513 | static int |
d0d6b7c5 JB |
514 | allocate_pty () |
515 | { | |
dfcf069d | 516 | register int c, i; |
d0d6b7c5 JB |
517 | int fd; |
518 | ||
519 | #ifdef PTY_ITERATION | |
520 | PTY_ITERATION | |
521 | #else | |
522 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
523 | for (i = 0; i < 16; i++) | |
524 | #endif | |
525 | { | |
26d7389d | 526 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
527 | #ifdef PTY_NAME_SPRINTF |
528 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
529 | #else |
530 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
531 | #endif /* no PTY_NAME_SPRINTF */ |
532 | ||
4d7c105e RS |
533 | #ifdef PTY_OPEN |
534 | PTY_OPEN; | |
535 | #else /* no PTY_OPEN */ | |
34967d0f | 536 | { |
34967d0f SM |
537 | # ifdef IRIS |
538 | /* Unusual IRIS code */ | |
539 | *ptyv = emacs_open ("/dev/ptc", O_RDWR | O_NDELAY, 0); | |
540 | if (fd < 0) | |
541 | return -1; | |
542 | if (fstat (fd, &stb) < 0) | |
543 | return -1; | |
544 | # else /* not IRIS */ | |
545 | { /* Some systems name their pseudoterminals so that there are gaps in | |
546 | the usual sequence - for example, on HP9000/S700 systems, there | |
547 | are no pseudoterminals with names ending in 'f'. So we wait for | |
548 | three failures in a row before deciding that we've reached the | |
549 | end of the ptys. */ | |
550 | int failed_count = 0; | |
f3d9532b | 551 | |
34967d0f SM |
552 | if (stat (pty_name, &stb) < 0) |
553 | { | |
554 | failed_count++; | |
555 | if (failed_count >= 3) | |
556 | return -1; | |
557 | } | |
558 | else | |
559 | failed_count = 0; | |
32676c08 | 560 | } |
34967d0f SM |
561 | # ifdef O_NONBLOCK |
562 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
563 | # else | |
564 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
565 | # endif | |
566 | # endif /* not IRIS */ | |
567 | } | |
4d7c105e | 568 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
569 | |
570 | if (fd >= 0) | |
571 | { | |
572 | /* check to make certain that both sides are available | |
573 | this avoids a nasty yet stupid bug in rlogins */ | |
574 | #ifdef PTY_TTY_NAME_SPRINTF | |
575 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 JB |
576 | #else |
577 | sprintf (pty_name, "/dev/tty%c%x", c, i); | |
d0d6b7c5 JB |
578 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
579 | #ifndef UNIPLUS | |
580 | if (access (pty_name, 6) != 0) | |
581 | { | |
68c45bf0 | 582 | emacs_close (fd); |
34967d0f | 583 | # if !defined(IRIS) && !defined(__sgi) |
d0d6b7c5 | 584 | continue; |
34967d0f | 585 | # else |
d0d6b7c5 | 586 | return -1; |
34967d0f | 587 | # endif /* IRIS */ |
d0d6b7c5 JB |
588 | } |
589 | #endif /* not UNIPLUS */ | |
590 | setup_pty (fd); | |
591 | return fd; | |
592 | } | |
593 | } | |
594 | return -1; | |
595 | } | |
596 | #endif /* HAVE_PTYS */ | |
597 | \f | |
ff6daed3 | 598 | static Lisp_Object |
d0d6b7c5 JB |
599 | make_process (name) |
600 | Lisp_Object name; | |
601 | { | |
602 | register Lisp_Object val, tem, name1; | |
603 | register struct Lisp_Process *p; | |
604 | char suffix[10]; | |
605 | register int i; | |
606 | ||
98423852 | 607 | p = allocate_process (); |
23d6bb9c | 608 | |
1d056e64 KH |
609 | XSETINT (p->infd, -1); |
610 | XSETINT (p->outfd, -1); | |
22719df2 KH |
611 | XSETFASTINT (p->pid, 0); |
612 | XSETFASTINT (p->tick, 0); | |
613 | XSETFASTINT (p->update_tick, 0); | |
d0d6b7c5 JB |
614 | p->raw_status_low = Qnil; |
615 | p->raw_status_high = Qnil; | |
616 | p->status = Qrun; | |
617 | p->mark = Fmake_marker (); | |
618 | ||
2d942bfa KS |
619 | #ifdef ADAPTIVE_READ_BUFFERING |
620 | p->adaptive_read_buffering = Qnil; | |
621 | XSETFASTINT (p->read_output_delay, 0); | |
622 | p->read_output_skip = Qnil; | |
623 | #endif | |
624 | ||
d0d6b7c5 JB |
625 | /* If name is already in use, modify it until it is unused. */ |
626 | ||
627 | name1 = name; | |
628 | for (i = 1; ; i++) | |
629 | { | |
630 | tem = Fget_process (name1); | |
631 | if (NILP (tem)) break; | |
632 | sprintf (suffix, "<%d>", i); | |
633 | name1 = concat2 (name, build_string (suffix)); | |
634 | } | |
635 | name = name1; | |
636 | p->name = name; | |
23d6bb9c | 637 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
638 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
639 | return val; | |
640 | } | |
641 | ||
ff6daed3 | 642 | static void |
d0d6b7c5 JB |
643 | remove_process (proc) |
644 | register Lisp_Object proc; | |
645 | { | |
646 | register Lisp_Object pair; | |
647 | ||
648 | pair = Frassq (proc, Vprocess_alist); | |
649 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
650 | |
651 | deactivate_process (proc); | |
652 | } | |
03f04413 KH |
653 | |
654 | /* Setup coding systems of PROCESS. */ | |
655 | ||
656 | void | |
657 | setup_process_coding_systems (process) | |
658 | Lisp_Object process; | |
659 | { | |
660 | struct Lisp_Process *p = XPROCESS (process); | |
661 | int inch = XINT (p->infd); | |
662 | int outch = XINT (p->outfd); | |
663 | ||
20f1ef2e KH |
664 | if (inch < 0 || outch < 0) |
665 | return; | |
666 | ||
03f04413 KH |
667 | if (!proc_decode_coding_system[inch]) |
668 | proc_decode_coding_system[inch] | |
669 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
670 | setup_coding_system (p->decode_coding_system, | |
671 | proc_decode_coding_system[inch]); | |
672 | if (! NILP (p->filter)) | |
673 | { | |
674 | if (NILP (p->filter_multibyte)) | |
675 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
676 | } | |
677 | else if (BUFFERP (p->buffer)) | |
678 | { | |
679 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
680 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
681 | } | |
682 | ||
683 | if (!proc_encode_coding_system[outch]) | |
684 | proc_encode_coding_system[outch] | |
685 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
686 | setup_coding_system (p->encode_coding_system, | |
687 | proc_encode_coding_system[outch]); | |
688 | } | |
d0d6b7c5 JB |
689 | \f |
690 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
691 | doc: /* Return t if OBJECT is a process. */) |
692 | (object) | |
4ee3e309 | 693 | Lisp_Object object; |
d0d6b7c5 | 694 | { |
4ee3e309 | 695 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
696 | } |
697 | ||
698 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
699 | doc: /* Return the process named NAME, or nil if there is none. */) |
700 | (name) | |
d0d6b7c5 JB |
701 | register Lisp_Object name; |
702 | { | |
bcd69aea | 703 | if (PROCESSP (name)) |
d0d6b7c5 | 704 | return name; |
b7826503 | 705 | CHECK_STRING (name); |
d0d6b7c5 JB |
706 | return Fcdr (Fassoc (name, Vprocess_alist)); |
707 | } | |
708 | ||
709 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
710 | doc: /* Return the (or a) process associated with BUFFER. |
711 | BUFFER may be a buffer or the name of one. */) | |
712 | (buffer) | |
4ee3e309 | 713 | register Lisp_Object buffer; |
d0d6b7c5 JB |
714 | { |
715 | register Lisp_Object buf, tail, proc; | |
716 | ||
4ee3e309 EN |
717 | if (NILP (buffer)) return Qnil; |
718 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
719 | if (NILP (buf)) return Qnil; |
720 | ||
721 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
722 | { | |
723 | proc = Fcdr (Fcar (tail)); | |
bcd69aea | 724 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
725 | return proc; |
726 | } | |
727 | return Qnil; | |
728 | } | |
729 | ||
ebb9e16f JB |
730 | /* This is how commands for the user decode process arguments. It |
731 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
732 | Buffers denote the first process in the buffer, and nil denotes the | |
733 | current buffer. */ | |
d0d6b7c5 | 734 | |
77b221b1 | 735 | static Lisp_Object |
d0d6b7c5 JB |
736 | get_process (name) |
737 | register Lisp_Object name; | |
738 | { | |
1619761d KH |
739 | register Lisp_Object proc, obj; |
740 | if (STRINGP (name)) | |
741 | { | |
742 | obj = Fget_process (name); | |
743 | if (NILP (obj)) | |
744 | obj = Fget_buffer (name); | |
745 | if (NILP (obj)) | |
d5db4077 | 746 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
747 | } |
748 | else if (NILP (name)) | |
749 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 750 | else |
1619761d KH |
751 | obj = name; |
752 | ||
753 | /* Now obj should be either a buffer object or a process object. | |
754 | */ | |
755 | if (BUFFERP (obj)) | |
d0d6b7c5 | 756 | { |
1619761d | 757 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 758 | if (NILP (proc)) |
d5db4077 | 759 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 760 | } |
d0d6b7c5 | 761 | else |
1619761d | 762 | { |
b7826503 | 763 | CHECK_PROCESS (obj); |
1619761d KH |
764 | proc = obj; |
765 | } | |
766 | return proc; | |
d0d6b7c5 JB |
767 | } |
768 | ||
769 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, | |
fdb82f93 PJ |
770 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
771 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
772 | nil, indicating the current buffer's process. */) | |
773 | (process) | |
4ee3e309 | 774 | register Lisp_Object process; |
d0d6b7c5 | 775 | { |
ff6daed3 KS |
776 | register struct Lisp_Process *p; |
777 | ||
4ee3e309 | 778 | process = get_process (process); |
ff6daed3 KS |
779 | p = XPROCESS (process); |
780 | ||
781 | p->raw_status_low = Qnil; | |
782 | p->raw_status_high = Qnil; | |
783 | if (NETCONN1_P (p)) | |
d0d6b7c5 | 784 | { |
ff6daed3 KS |
785 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
786 | XSETINT (p->tick, ++process_tick); | |
787 | status_notify (p); | |
d0d6b7c5 | 788 | } |
ff6daed3 | 789 | else if (XINT (p->infd) >= 0) |
d0d6b7c5 | 790 | { |
4ee3e309 | 791 | Fkill_process (process, Qnil); |
d0d6b7c5 | 792 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ |
ff6daed3 | 793 | p->status |
d0d6b7c5 | 794 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); |
ff6daed3 KS |
795 | XSETINT (p->tick, ++process_tick); |
796 | status_notify (p); | |
d0d6b7c5 | 797 | } |
116c423c | 798 | remove_process (process); |
d0d6b7c5 JB |
799 | return Qnil; |
800 | } | |
801 | \f | |
802 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
803 | doc: /* Return the status of PROCESS. |
804 | The returned value is one of the following symbols: | |
805 | run -- for a process that is running. | |
806 | stop -- for a process stopped but continuable. | |
807 | exit -- for a process that has exited. | |
808 | signal -- for a process that has got a fatal signal. | |
809 | open -- for a network stream connection that is open. | |
e690ca94 | 810 | listen -- for a network stream server that is listening. |
fdb82f93 | 811 | closed -- for a network stream connection that is closed. |
e4984112 KS |
812 | connect -- when waiting for a non-blocking connection to complete. |
813 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
814 | nil -- if arg is a process name and no such process exists. |
815 | PROCESS may be a process, a buffer, the name of a process, or | |
816 | nil, indicating the current buffer's process. */) | |
817 | (process) | |
4ee3e309 | 818 | register Lisp_Object process; |
d0d6b7c5 JB |
819 | { |
820 | register struct Lisp_Process *p; | |
821 | register Lisp_Object status; | |
343f4114 | 822 | |
4ee3e309 EN |
823 | if (STRINGP (process)) |
824 | process = Fget_process (process); | |
343f4114 | 825 | else |
4ee3e309 | 826 | process = get_process (process); |
343f4114 | 827 | |
4ee3e309 EN |
828 | if (NILP (process)) |
829 | return process; | |
343f4114 | 830 | |
4ee3e309 | 831 | p = XPROCESS (process); |
d0d6b7c5 JB |
832 | if (!NILP (p->raw_status_low)) |
833 | update_status (p); | |
834 | status = p->status; | |
bcd69aea | 835 | if (CONSP (status)) |
70949dac | 836 | status = XCAR (status); |
e690ca94 | 837 | if (NETCONN1_P (p)) |
d0d6b7c5 | 838 | { |
e690ca94 | 839 | if (EQ (status, Qexit)) |
d0d6b7c5 | 840 | status = Qclosed; |
e690ca94 KS |
841 | else if (EQ (p->command, Qt)) |
842 | status = Qstop; | |
843 | else if (EQ (status, Qrun)) | |
844 | status = Qopen; | |
d0d6b7c5 JB |
845 | } |
846 | return status; | |
847 | } | |
848 | ||
849 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
850 | 1, 1, 0, | |
fdb82f93 PJ |
851 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
852 | If PROCESS has not yet exited or died, return 0. */) | |
853 | (process) | |
4ee3e309 | 854 | register Lisp_Object process; |
d0d6b7c5 | 855 | { |
b7826503 | 856 | CHECK_PROCESS (process); |
4ee3e309 EN |
857 | if (!NILP (XPROCESS (process)->raw_status_low)) |
858 | update_status (XPROCESS (process)); | |
859 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 860 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
861 | return make_number (0); |
862 | } | |
863 | ||
864 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 865 | doc: /* Return the process id of PROCESS. |
f3d9532b | 866 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 PJ |
867 | For a network connection, this value is nil. */) |
868 | (process) | |
4ee3e309 | 869 | register Lisp_Object process; |
d0d6b7c5 | 870 | { |
b7826503 | 871 | CHECK_PROCESS (process); |
4ee3e309 | 872 | return XPROCESS (process)->pid; |
d0d6b7c5 JB |
873 | } |
874 | ||
875 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
876 | doc: /* Return the name of PROCESS, as a string. |
877 | This is the name of the program invoked in PROCESS, | |
878 | possibly modified to make it unique among process names. */) | |
879 | (process) | |
4ee3e309 | 880 | register Lisp_Object process; |
d0d6b7c5 | 881 | { |
b7826503 | 882 | CHECK_PROCESS (process); |
4ee3e309 | 883 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
884 | } |
885 | ||
886 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
887 | doc: /* Return the command that was executed to start PROCESS. |
888 | This is a list of strings, the first string being the program executed | |
889 | and the rest of the strings being the arguments given to it. | |
890 | For a non-child channel, this is nil. */) | |
891 | (process) | |
4ee3e309 | 892 | register Lisp_Object process; |
d0d6b7c5 | 893 | { |
b7826503 | 894 | CHECK_PROCESS (process); |
4ee3e309 | 895 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
896 | } |
897 | ||
3b9a3dfa | 898 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
899 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
900 | This is the terminal that the process itself reads and writes on, | |
901 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
902 | (process) | |
4ee3e309 | 903 | register Lisp_Object process; |
3b9a3dfa | 904 | { |
b7826503 | 905 | CHECK_PROCESS (process); |
4ee3e309 | 906 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
907 | } |
908 | ||
d0d6b7c5 | 909 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
910 | 2, 2, 0, |
911 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
912 | (process, buffer) | |
4ee3e309 | 913 | register Lisp_Object process, buffer; |
d0d6b7c5 | 914 | { |
e690ca94 KS |
915 | struct Lisp_Process *p; |
916 | ||
b7826503 | 917 | CHECK_PROCESS (process); |
d0d6b7c5 | 918 | if (!NILP (buffer)) |
b7826503 | 919 | CHECK_BUFFER (buffer); |
e690ca94 KS |
920 | p = XPROCESS (process); |
921 | p->buffer = buffer; | |
922 | if (NETCONN1_P (p)) | |
923 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); | |
03f04413 | 924 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
925 | return buffer; |
926 | } | |
927 | ||
928 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
929 | 1, 1, 0, |
930 | doc: /* Return the buffer PROCESS is associated with. | |
931 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
932 | (process) | |
4ee3e309 | 933 | register Lisp_Object process; |
d0d6b7c5 | 934 | { |
b7826503 | 935 | CHECK_PROCESS (process); |
4ee3e309 | 936 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
937 | } |
938 | ||
939 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
940 | 1, 1, 0, |
941 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
942 | (process) | |
4ee3e309 | 943 | register Lisp_Object process; |
d0d6b7c5 | 944 | { |
b7826503 | 945 | CHECK_PROCESS (process); |
4ee3e309 | 946 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
947 | } |
948 | ||
949 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
950 | 2, 2, 0, |
951 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
952 | t means stop accepting output from the process. | |
3452df9e KS |
953 | |
954 | When a process has a filter, its buffer is not used for output. | |
955 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 956 | passed to the filter. |
3452df9e | 957 | |
fdb82f93 | 958 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
959 | The string argument is normally a multibyte string, except: |
960 | - if the process' input coding system is no-conversion or raw-text, | |
961 | it is a unibyte string (the non-converted input), or else | |
962 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
963 | string (the result of converting the decoded input multibyte | |
964 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 965 | (process, filter) |
4ee3e309 | 966 | register Lisp_Object process, filter; |
d0d6b7c5 | 967 | { |
471f86b9 | 968 | struct Lisp_Process *p; |
177c0ea7 | 969 | |
b7826503 | 970 | CHECK_PROCESS (process); |
471f86b9 GM |
971 | p = XPROCESS (process); |
972 | ||
973 | /* Don't signal an error if the process' input file descriptor | |
974 | is closed. This could make debugging Lisp more difficult, | |
975 | for example when doing something like | |
976 | ||
977 | (setq process (start-process ...)) | |
978 | (debug) | |
979 | (set-process-filter process ...) */ | |
177c0ea7 | 980 | |
471f86b9 | 981 | if (XINT (p->infd) >= 0) |
a69281ff | 982 | { |
e690ca94 | 983 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 GM |
984 | { |
985 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
986 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
987 | } | |
e690ca94 KS |
988 | else if (EQ (p->filter, Qt) |
989 | && !EQ (p->command, Qt)) /* Network process not stopped. */ | |
471f86b9 GM |
990 | { |
991 | FD_SET (XINT (p->infd), &input_wait_mask); | |
992 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
993 | } | |
a69281ff | 994 | } |
177c0ea7 | 995 | |
471f86b9 | 996 | p->filter = filter; |
e690ca94 KS |
997 | if (NETCONN1_P (p)) |
998 | p->childp = Fplist_put (p->childp, QCfilter, filter); | |
03f04413 | 999 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1000 | return filter; |
1001 | } | |
1002 | ||
1003 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1004 | 1, 1, 0, |
1005 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1006 | See `set-process-filter' for more info on filter functions. */) | |
1007 | (process) | |
4ee3e309 | 1008 | register Lisp_Object process; |
d0d6b7c5 | 1009 | { |
b7826503 | 1010 | CHECK_PROCESS (process); |
4ee3e309 | 1011 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1012 | } |
1013 | ||
1014 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1015 | 2, 2, 0, |
1016 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1017 | The sentinel is called as a function when the process changes state. | |
1018 | It gets two arguments: the process, and a string describing the change. */) | |
1019 | (process, sentinel) | |
4ee3e309 | 1020 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 1021 | { |
2ccf3102 KS |
1022 | struct Lisp_Process *p; |
1023 | ||
b7826503 | 1024 | CHECK_PROCESS (process); |
2ccf3102 KS |
1025 | p = XPROCESS (process); |
1026 | ||
1027 | p->sentinel = sentinel; | |
1028 | if (NETCONN1_P (p)) | |
1029 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); | |
d0d6b7c5 JB |
1030 | return sentinel; |
1031 | } | |
1032 | ||
1033 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1034 | 1, 1, 0, |
1035 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1036 | See `set-process-sentinel' for more info on sentinels. */) | |
1037 | (process) | |
4ee3e309 | 1038 | register Lisp_Object process; |
d0d6b7c5 | 1039 | { |
b7826503 | 1040 | CHECK_PROCESS (process); |
4ee3e309 | 1041 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1042 | } |
1043 | ||
396df322 | 1044 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1045 | Sset_process_window_size, 3, 3, 0, |
1046 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
1047 | (process, height, width) | |
4ee3e309 | 1048 | register Lisp_Object process, height, width; |
396df322 | 1049 | { |
b7826503 PJ |
1050 | CHECK_PROCESS (process); |
1051 | CHECK_NATNUM (height); | |
1052 | CHECK_NATNUM (width); | |
177c0ea7 | 1053 | |
989521fd | 1054 | if (XINT (XPROCESS (process)->infd) < 0 |
471f86b9 GM |
1055 | || set_window_size (XINT (XPROCESS (process)->infd), |
1056 | XINT (height), XINT (width)) <= 0) | |
396df322 RS |
1057 | return Qnil; |
1058 | else | |
1059 | return Qt; | |
1060 | } | |
1061 | ||
52a1b894 | 1062 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1063 | Fset_process_inherit_coding_system_flag, |
1064 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1065 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1066 | If the second argument FLAG is non-nil, then the variable | |
1067 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1068 | will be bound to the value of the coding system used to decode | |
1069 | the process output. | |
1070 | ||
1071 | This is useful when the coding system specified for the process buffer | |
1072 | leaves either the character code conversion or the end-of-line conversion | |
1073 | unspecified, or if the coding system used to decode the process output | |
1074 | is more appropriate for saving the process buffer. | |
1075 | ||
1076 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1077 | starting the process is an alternative way of setting the inherit flag | |
1078 | for the process which will run. */) | |
1079 | (process, flag) | |
52a1b894 EZ |
1080 | register Lisp_Object process, flag; |
1081 | { | |
b7826503 | 1082 | CHECK_PROCESS (process); |
aa91317a | 1083 | XPROCESS (process)->inherit_coding_system_flag = flag; |
52a1b894 EZ |
1084 | return flag; |
1085 | } | |
1086 | ||
1087 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1088 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1089 | 1, 1, 0, | |
1090 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1091 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1092 | associated with PROCESS will inherit the coding system used to decode | |
1093 | the process output. */) | |
1094 | (process) | |
52a1b894 EZ |
1095 | register Lisp_Object process; |
1096 | { | |
b7826503 | 1097 | CHECK_PROCESS (process); |
aa91317a | 1098 | return XPROCESS (process)->inherit_coding_system_flag; |
52a1b894 EZ |
1099 | } |
1100 | ||
e690ca94 KS |
1101 | DEFUN ("set-process-query-on-exit-flag", |
1102 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1103 | 2, 2, 0, | |
1104 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1105 | If the second argument FLAG is non-nil, Emacs will query the user before |
e690ca94 KS |
1106 | exiting if PROCESS is running. */) |
1107 | (process, flag) | |
1108 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1109 | { |
b7826503 | 1110 | CHECK_PROCESS (process); |
e690ca94 KS |
1111 | XPROCESS (process)->kill_without_query = Fnull (flag); |
1112 | return flag; | |
d0d6b7c5 | 1113 | } |
312c9964 | 1114 | |
e690ca94 KS |
1115 | DEFUN ("process-query-on-exit-flag", |
1116 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1117 | 1, 1, 0, |
f3d9532b | 1118 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
fdb82f93 | 1119 | (process) |
de282a05 RS |
1120 | register Lisp_Object process; |
1121 | { | |
b7826503 | 1122 | CHECK_PROCESS (process); |
e690ca94 KS |
1123 | return Fnull (XPROCESS (process)->kill_without_query); |
1124 | } | |
1125 | ||
1126 | #ifdef DATAGRAM_SOCKETS | |
1127 | Lisp_Object Fprocess_datagram_address (); | |
1128 | #endif | |
1129 | ||
1130 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1131 | 1, 2, 0, | |
1132 | doc: /* Return the contact info of PROCESS; t for a real child. | |
1133 | For a net connection, the value depends on the optional KEY arg. | |
1134 | If KEY is nil, value is a cons cell of the form (HOST SERVICE), | |
1135 | if KEY is t, the complete contact information for the connection is | |
1136 | returned, else the specific value for the keyword KEY is returned. | |
1137 | See `make-network-process' for a list of keywords. */) | |
1138 | (process, key) | |
1139 | register Lisp_Object process, key; | |
1140 | { | |
1141 | Lisp_Object contact; | |
1142 | ||
1143 | CHECK_PROCESS (process); | |
1144 | contact = XPROCESS (process)->childp; | |
1145 | ||
1146 | #ifdef DATAGRAM_SOCKETS | |
1147 | if (DATAGRAM_CONN_P (process) | |
1148 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1149 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1150 | Fprocess_datagram_address (process)); |
1151 | #endif | |
1152 | ||
1153 | if (!NETCONN_P (process) || EQ (key, Qt)) | |
1154 | return contact; | |
1155 | if (NILP (key)) | |
1156 | return Fcons (Fplist_get (contact, QChost), | |
1157 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
1158 | return Fplist_get (contact, key); | |
de282a05 RS |
1159 | } |
1160 | ||
faa7db08 KS |
1161 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1162 | 1, 1, 0, | |
1163 | doc: /* Return the plist of PROCESS. */) | |
1164 | (process) | |
1165 | register Lisp_Object process; | |
365aee82 | 1166 | { |
ac4a7584 | 1167 | CHECK_PROCESS (process); |
faa7db08 | 1168 | return XPROCESS (process)->plist; |
ac4a7584 | 1169 | } |
365aee82 | 1170 | |
faa7db08 KS |
1171 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1172 | 2, 2, 0, | |
26a086c6 | 1173 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1174 | (process, plist) |
1175 | register Lisp_Object process, plist; | |
ac4a7584 | 1176 | { |
365aee82 | 1177 | CHECK_PROCESS (process); |
faa7db08 | 1178 | CHECK_LIST (plist); |
365aee82 | 1179 | |
faa7db08 | 1180 | XPROCESS (process)->plist = plist; |
26a086c6 | 1181 | return plist; |
365aee82 KS |
1182 | } |
1183 | ||
312c9964 RS |
1184 | #if 0 /* Turned off because we don't currently record this info |
1185 | in the process. Perhaps add it. */ | |
1186 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1187 | doc: /* Return the connection type of PROCESS. |
1188 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1189 | a socket connection. */) | |
1190 | (process) | |
312c9964 RS |
1191 | Lisp_Object process; |
1192 | { | |
1193 | return XPROCESS (process)->type; | |
1194 | } | |
1195 | #endif | |
991234f0 KS |
1196 | |
1197 | #ifdef HAVE_SOCKETS | |
1198 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1199 | 1, 2, 0, |
991234f0 | 1200 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1201 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1202 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1203 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1204 | number in the string, even when present in ADDRESS. |
1205 | Returns nil if format of ADDRESS is invalid. */) | |
0dccee41 KS |
1206 | (address, omit_port) |
1207 | Lisp_Object address, omit_port; | |
991234f0 | 1208 | { |
991234f0 KS |
1209 | if (NILP (address)) |
1210 | return Qnil; | |
1211 | ||
1212 | if (STRINGP (address)) /* AF_LOCAL */ | |
1213 | return address; | |
1214 | ||
e1652a86 | 1215 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1216 | { |
1217 | register struct Lisp_Vector *p = XVECTOR (address); | |
1218 | Lisp_Object args[6]; | |
0dccee41 | 1219 | int nargs, i; |
991234f0 | 1220 | |
e1652a86 | 1221 | if (p->size == 4 || (p->size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1222 | { |
1223 | args[0] = build_string ("%d.%d.%d.%d"); | |
1224 | nargs = 4; | |
1225 | } | |
1226 | else if (p->size == 5) | |
1227 | { | |
1228 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1229 | nargs = 5; | |
1230 | } | |
e1652a86 KS |
1231 | else if (p->size == 8 || (p->size == 9 && !NILP (omit_port))) |
1232 | { | |
1233 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1234 | nargs = 8; | |
1235 | } | |
1236 | else if (p->size == 9) | |
1237 | { | |
1238 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1239 | nargs = 9; | |
1240 | } | |
0dccee41 | 1241 | else |
991234f0 KS |
1242 | return Qnil; |
1243 | ||
0dccee41 KS |
1244 | for (i = 0; i < nargs; i++) |
1245 | args[i+1] = p->contents[i]; | |
1246 | return Fformat (nargs+1, args); | |
991234f0 KS |
1247 | } |
1248 | ||
1249 | if (CONSP (address)) | |
1250 | { | |
1251 | Lisp_Object args[2]; | |
1252 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1253 | args[1] = Fcar (address); |
991234f0 | 1254 | return Fformat (2, args); |
177c0ea7 | 1255 | |
991234f0 KS |
1256 | } |
1257 | ||
1258 | return Qnil; | |
1259 | } | |
1260 | #endif | |
d0d6b7c5 | 1261 | \f |
ff6daed3 | 1262 | static Lisp_Object |
e690ca94 KS |
1263 | list_processes_1 (query_only) |
1264 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1265 | { |
1266 | register Lisp_Object tail, tem; | |
1267 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1268 | register struct Lisp_Process *p; |
e690ca94 KS |
1269 | char tembuf[300]; |
1270 | int w_proc, w_buffer, w_tty; | |
1271 | Lisp_Object i_status, i_buffer, i_tty, i_command; | |
1272 | ||
1273 | w_proc = 4; /* Proc */ | |
1274 | w_buffer = 6; /* Buffer */ | |
1275 | w_tty = 0; /* Omit if no ttys */ | |
1276 | ||
1277 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1278 | { | |
1279 | int i; | |
1280 | ||
1281 | proc = Fcdr (Fcar (tail)); | |
1282 | p = XPROCESS (proc); | |
1283 | if (NILP (p->childp)) | |
1284 | continue; | |
1285 | if (!NILP (query_only) && !NILP (p->kill_without_query)) | |
1286 | continue; | |
1287 | if (STRINGP (p->name) | |
d5db4077 | 1288 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1289 | w_proc = i; |
1290 | if (!NILP (p->buffer)) | |
1291 | { | |
1292 | if (NILP (XBUFFER (p->buffer)->name) && w_buffer < 8) | |
1293 | w_buffer = 8; /* (Killed) */ | |
d5db4077 | 1294 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1295 | w_buffer = i; |
1296 | } | |
1297 | if (STRINGP (p->tty_name) | |
d5db4077 | 1298 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1299 | w_tty = i; |
1300 | } | |
1301 | ||
1302 | XSETFASTINT (i_status, w_proc + 1); | |
1303 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1304 | if (w_tty) | |
1305 | { | |
1306 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
1307 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_tty + 1); | |
1308 | } else { | |
1309 | i_tty = Qnil; | |
1310 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1311 | } | |
d0d6b7c5 | 1312 | |
22719df2 | 1313 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1314 | |
1315 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1316 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1317 | |
1318 | current_buffer->truncate_lines = Qt; | |
1319 | ||
e690ca94 KS |
1320 | write_string ("Proc", -1); |
1321 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1322 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1323 | if (!NILP (i_tty)) | |
1324 | { | |
1325 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1326 | } | |
1327 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1328 | write_string ("\n", -1); | |
1329 | ||
1330 | write_string ("----", -1); | |
1331 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1332 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1333 | if (!NILP (i_tty)) | |
1334 | { | |
1335 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1336 | } | |
1337 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1338 | write_string ("\n", -1); | |
d0d6b7c5 JB |
1339 | |
1340 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1341 | { | |
1342 | Lisp_Object symbol; | |
1343 | ||
1344 | proc = Fcdr (Fcar (tail)); | |
1345 | p = XPROCESS (proc); | |
1346 | if (NILP (p->childp)) | |
1347 | continue; | |
e690ca94 KS |
1348 | if (!NILP (query_only) && !NILP (p->kill_without_query)) |
1349 | continue; | |
d0d6b7c5 JB |
1350 | |
1351 | Finsert (1, &p->name); | |
e690ca94 | 1352 | Findent_to (i_status, minspace); |
d0d6b7c5 JB |
1353 | |
1354 | if (!NILP (p->raw_status_low)) | |
1355 | update_status (p); | |
1356 | symbol = p->status; | |
bcd69aea | 1357 | if (CONSP (p->status)) |
70949dac | 1358 | symbol = XCAR (p->status); |
d0d6b7c5 | 1359 | |
177c0ea7 | 1360 | |
d0d6b7c5 JB |
1361 | if (EQ (symbol, Qsignal)) |
1362 | { | |
1363 | Lisp_Object tem; | |
1364 | tem = Fcar (Fcdr (p->status)); | |
1365 | #ifdef VMS | |
1366 | if (XINT (tem) < NSIG) | |
b0310da4 | 1367 | write_string (sys_errlist [XINT (tem)], -1); |
d0d6b7c5 JB |
1368 | else |
1369 | #endif | |
1370 | Fprinc (symbol, Qnil); | |
1371 | } | |
e690ca94 | 1372 | else if (NETCONN1_P (p)) |
d0d6b7c5 | 1373 | { |
e690ca94 | 1374 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1375 | write_string ("closed", -1); |
e690ca94 KS |
1376 | else if (EQ (p->command, Qt)) |
1377 | write_string ("stopped", -1); | |
1378 | else if (EQ (symbol, Qrun)) | |
1379 | write_string ("open", -1); | |
d0d6b7c5 JB |
1380 | else |
1381 | Fprinc (symbol, Qnil); | |
1382 | } | |
1383 | else | |
1384 | Fprinc (symbol, Qnil); | |
1385 | ||
1386 | if (EQ (symbol, Qexit)) | |
1387 | { | |
1388 | Lisp_Object tem; | |
1389 | tem = Fcar (Fcdr (p->status)); | |
1390 | if (XFASTINT (tem)) | |
1391 | { | |
3162bafa | 1392 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1393 | write_string (tembuf, -1); |
1394 | } | |
1395 | } | |
1396 | ||
1397 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
1398 | remove_process (proc); | |
1399 | ||
e690ca94 | 1400 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1401 | if (NILP (p->buffer)) |
1402 | insert_string ("(none)"); | |
1403 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1404 | insert_string ("(Killed)"); | |
1405 | else | |
1406 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1407 | ||
e690ca94 KS |
1408 | if (!NILP (i_tty)) |
1409 | { | |
1410 | Findent_to (i_tty, minspace); | |
1411 | if (STRINGP (p->tty_name)) | |
1412 | Finsert (1, &p->tty_name); | |
1413 | } | |
a9fde32e | 1414 | |
e690ca94 | 1415 | Findent_to (i_command, minspace); |
a9fde32e | 1416 | |
e690ca94 KS |
1417 | if (EQ (p->status, Qlisten)) |
1418 | { | |
1419 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1420 | if (INTEGERP (port)) | |
1421 | port = Fnumber_to_string (port); | |
991234f0 | 1422 | if (NILP (port)) |
0dccee41 | 1423 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1424 | sprintf (tembuf, "(network %s server on %s)\n", |
bed9664a | 1425 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1426 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1427 | insert_string (tembuf); |
1428 | } | |
1429 | else if (NETCONN1_P (p)) | |
d0d6b7c5 | 1430 | { |
e690ca94 KS |
1431 | /* For a local socket, there is no host name, |
1432 | so display service instead. */ | |
1433 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1434 | if (!STRINGP (host)) | |
1435 | { | |
1436 | host = Fplist_get (p->childp, QCservice); | |
1437 | if (INTEGERP (host)) | |
1438 | host = Fnumber_to_string (host); | |
1439 | } | |
991234f0 | 1440 | if (NILP (host)) |
0dccee41 | 1441 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1442 | sprintf (tembuf, "(network %s connection to %s)\n", |
bed9664a | 1443 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1444 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 JB |
1445 | insert_string (tembuf); |
1446 | } | |
177c0ea7 | 1447 | else |
d0d6b7c5 JB |
1448 | { |
1449 | tem = p->command; | |
1450 | while (1) | |
1451 | { | |
1452 | tem1 = Fcar (tem); | |
1453 | Finsert (1, &tem1); | |
1454 | tem = Fcdr (tem); | |
1455 | if (NILP (tem)) | |
1456 | break; | |
1457 | insert_string (" "); | |
1458 | } | |
1459 | insert_string ("\n"); | |
1460 | } | |
1461 | } | |
1462 | return Qnil; | |
1463 | } | |
1464 | ||
e690ca94 | 1465 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1466 | doc: /* Display a list of all processes. |
e690ca94 KS |
1467 | If optional argument QUERY-ONLY is non-nil, only processes with |
1468 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1469 | Any process listed as exited or signaled is actually eliminated |
1470 | after the listing is made. */) | |
e690ca94 KS |
1471 | (query_only) |
1472 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1473 | { |
1474 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1475 | list_processes_1, query_only); |
d0d6b7c5 JB |
1476 | return Qnil; |
1477 | } | |
1478 | ||
1479 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1480 | doc: /* Return a list of all processes. */) |
1481 | () | |
d0d6b7c5 JB |
1482 | { |
1483 | return Fmapcar (Qcdr, Vprocess_alist); | |
1484 | } | |
1485 | \f | |
b0310da4 JB |
1486 | /* Starting asynchronous inferior processes. */ |
1487 | ||
1488 | static Lisp_Object start_process_unwind (); | |
1489 | ||
d0d6b7c5 | 1490 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1491 | doc: /* Start a program in a subprocess. Return the process object for it. |
1492 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1493 | BUFFER is the buffer (or buffer name) to associate with the process. |
fdb82f93 PJ |
1494 | Process output goes at end of that buffer, unless you specify |
1495 | an output stream or filter function to handle the output. | |
1496 | BUFFER may be also nil, meaning that this process is not associated | |
1497 | with any buffer. | |
553acde5 | 1498 | PROGRAM is the program file name. It is searched for in PATH. |
3ecdf100 | 1499 | Remaining arguments are strings to give program as arguments. |
320aebc9 | 1500 | |
3ecdf100 | 1501 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1502 | (nargs, args) |
d0d6b7c5 JB |
1503 | int nargs; |
1504 | register Lisp_Object *args; | |
1505 | { | |
1e30af70 | 1506 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 JB |
1507 | #ifdef VMS |
1508 | register unsigned char *new_argv; | |
1509 | int len; | |
1510 | #else | |
1511 | register unsigned char **new_argv; | |
1512 | #endif | |
1513 | register int i; | |
aed13378 | 1514 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1515 | |
1516 | buffer = args[1]; | |
1517 | if (!NILP (buffer)) | |
1518 | buffer = Fget_buffer_create (buffer); | |
1519 | ||
1e30af70 JB |
1520 | /* Make sure that the child will be able to chdir to the current |
1521 | buffer's current directory, or its unhandled equivalent. We | |
1522 | can't just have the child check for an error when it does the | |
1523 | chdir, since it's in a vfork. | |
1524 | ||
1525 | We have to GCPRO around this because Fexpand_file_name and | |
1526 | Funhandled_file_name_directory might call a file name handling | |
1527 | function. The argument list is protected by the caller, so all | |
1528 | we really have to worry about is buffer. */ | |
1529 | { | |
1530 | struct gcpro gcpro1, gcpro2; | |
1531 | ||
1532 | current_dir = current_buffer->directory; | |
1533 | ||
1534 | GCPRO2 (buffer, current_dir); | |
1535 | ||
177c0ea7 | 1536 | current_dir |
7af71e17 RS |
1537 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), |
1538 | Qnil); | |
1e30af70 JB |
1539 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1540 | report_file_error ("Setting current directory", | |
1541 | Fcons (current_buffer->directory, Qnil)); | |
1542 | ||
1543 | UNGCPRO; | |
1544 | } | |
1545 | ||
d0d6b7c5 | 1546 | name = args[0]; |
b7826503 | 1547 | CHECK_STRING (name); |
d0d6b7c5 JB |
1548 | |
1549 | program = args[2]; | |
1550 | ||
b7826503 | 1551 | CHECK_STRING (program); |
d0d6b7c5 | 1552 | |
d0d6b7c5 | 1553 | proc = make_process (name); |
b0310da4 JB |
1554 | /* If an error occurs and we can't start the process, we want to |
1555 | remove it from the process list. This means that each error | |
1556 | check in create_process doesn't need to call remove_process | |
1557 | itself; it's all taken care of here. */ | |
1558 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1559 | |
1560 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1561 | XPROCESS (proc)->plist = Qnil; |
d0d6b7c5 JB |
1562 | XPROCESS (proc)->buffer = buffer; |
1563 | XPROCESS (proc)->sentinel = Qnil; | |
1564 | XPROCESS (proc)->filter = Qnil; | |
03f04413 KH |
1565 | XPROCESS (proc)->filter_multibyte |
1566 | = buffer_defaults.enable_multibyte_characters; | |
d0d6b7c5 JB |
1567 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); |
1568 | ||
2d942bfa KS |
1569 | #ifdef ADAPTIVE_READ_BUFFERING |
1570 | XPROCESS (proc)->adaptive_read_buffering = Vprocess_adaptive_read_buffering; | |
1571 | #endif | |
1572 | ||
7af71e17 RS |
1573 | /* Make the process marker point into the process buffer (if any). */ |
1574 | if (!NILP (buffer)) | |
d8a2934e RS |
1575 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1576 | BUF_ZV (XBUFFER (buffer)), | |
1577 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1578 | |
67918941 | 1579 | { |
d5d4ae71 KH |
1580 | /* Decide coding systems for communicating with the process. Here |
1581 | we don't setup the structure coding_system nor pay attention to | |
1582 | unibyte mode. They are done in create_process. */ | |
1583 | ||
67918941 RS |
1584 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1585 | Lisp_Object coding_systems = Qt; | |
1586 | Lisp_Object val, *args2; | |
a4a37e65 | 1587 | struct gcpro gcpro1, gcpro2; |
67918941 | 1588 | |
d5d4ae71 KH |
1589 | val = Vcoding_system_for_read; |
1590 | if (NILP (val)) | |
67918941 RS |
1591 | { |
1592 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1593 | args2[0] = Qstart_process; | |
1594 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1595 | GCPRO2 (proc, current_dir); |
67918941 RS |
1596 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1597 | UNGCPRO; | |
1598 | if (CONSP (coding_systems)) | |
70949dac | 1599 | val = XCAR (coding_systems); |
67918941 | 1600 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1601 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1602 | } |
1603 | XPROCESS (proc)->decode_coding_system = val; | |
1604 | ||
d5d4ae71 KH |
1605 | val = Vcoding_system_for_write; |
1606 | if (NILP (val)) | |
67918941 RS |
1607 | { |
1608 | if (EQ (coding_systems, Qt)) | |
1609 | { | |
1610 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1611 | args2[0] = Qstart_process; | |
1612 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1613 | GCPRO2 (proc, current_dir); |
67918941 RS |
1614 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1615 | UNGCPRO; | |
1616 | } | |
1617 | if (CONSP (coding_systems)) | |
70949dac | 1618 | val = XCDR (coding_systems); |
67918941 | 1619 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1620 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1621 | } |
1622 | XPROCESS (proc)->encode_coding_system = val; | |
1623 | } | |
0fa1789e | 1624 | |
a4a37e65 KH |
1625 | #ifdef VMS |
1626 | /* Make a one member argv with all args concatenated | |
1627 | together separated by a blank. */ | |
d5db4077 | 1628 | len = SBYTES (program) + 2; |
a4a37e65 KH |
1629 | for (i = 3; i < nargs; i++) |
1630 | { | |
1631 | tem = args[i]; | |
b7826503 | 1632 | CHECK_STRING (tem); |
d5db4077 | 1633 | len += SBYTES (tem) + 1; /* count the blank */ |
a4a37e65 KH |
1634 | } |
1635 | new_argv = (unsigned char *) alloca (len); | |
d5db4077 | 1636 | strcpy (new_argv, SDATA (program)); |
a4a37e65 KH |
1637 | for (i = 3; i < nargs; i++) |
1638 | { | |
1639 | tem = args[i]; | |
b7826503 | 1640 | CHECK_STRING (tem); |
a4a37e65 | 1641 | strcat (new_argv, " "); |
d5db4077 | 1642 | strcat (new_argv, SDATA (tem)); |
a4a37e65 KH |
1643 | } |
1644 | /* Need to add code here to check for program existence on VMS */ | |
177c0ea7 | 1645 | |
a4a37e65 KH |
1646 | #else /* not VMS */ |
1647 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1648 | ||
ed30cf85 RS |
1649 | /* If program file name is not absolute, search our path for it. |
1650 | Put the name we will really use in TEM. */ | |
d5db4077 KR |
1651 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) |
1652 | && !(SCHARS (program) > 1 | |
1653 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
a4a37e65 KH |
1654 | { |
1655 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1656 | ||
1657 | tem = Qnil; | |
1658 | GCPRO4 (name, program, buffer, current_dir); | |
cc4db0c7 | 1659 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); |
a4a37e65 KH |
1660 | UNGCPRO; |
1661 | if (NILP (tem)) | |
1662 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1663 | tem = Fexpand_file_name (tem, Qnil); | |
a4a37e65 KH |
1664 | } |
1665 | else | |
1666 | { | |
1667 | if (!NILP (Ffile_directory_p (program))) | |
1668 | error ("Specified program for new process is a directory"); | |
ed30cf85 | 1669 | tem = program; |
a4a37e65 KH |
1670 | } |
1671 | ||
ed30cf85 RS |
1672 | /* If program file name starts with /: for quoting a magic name, |
1673 | discard that. */ | |
1674 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1675 | && SREF (tem, 1) == ':') | |
1676 | tem = Fsubstring (tem, make_number (2), Qnil); | |
1677 | ||
1678 | /* Encode the file name and put it in NEW_ARGV. | |
1679 | That's where the child will use it to execute the program. */ | |
1680 | tem = ENCODE_FILE (tem); | |
1681 | new_argv[0] = SDATA (tem); | |
1682 | ||
a4a37e65 KH |
1683 | /* Here we encode arguments by the coding system used for sending |
1684 | data to the process. We don't support using different coding | |
1685 | systems for encoding arguments and for encoding data sent to the | |
1686 | process. */ | |
1687 | ||
1688 | for (i = 3; i < nargs; i++) | |
1689 | { | |
1690 | tem = args[i]; | |
b7826503 | 1691 | CHECK_STRING (tem); |
a4a37e65 KH |
1692 | if (STRING_MULTIBYTE (tem)) |
1693 | tem = (code_convert_string_norecord | |
1694 | (tem, XPROCESS (proc)->encode_coding_system, 1)); | |
d5db4077 | 1695 | new_argv[i - 2] = SDATA (tem); |
a4a37e65 KH |
1696 | } |
1697 | new_argv[i - 2] = 0; | |
1698 | #endif /* not VMS */ | |
1699 | ||
0fa1789e | 1700 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
e7fbaa65 | 1701 | XPROCESS (proc)->decoding_carryover = make_number (0); |
0fa1789e | 1702 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); |
e7fbaa65 | 1703 | XPROCESS (proc)->encoding_carryover = make_number (0); |
0fa1789e | 1704 | |
52a1b894 | 1705 | XPROCESS (proc)->inherit_coding_system_flag |
aa91317a RS |
1706 | = (NILP (buffer) || !inherit_process_coding_system |
1707 | ? Qnil : Qt); | |
52a1b894 | 1708 | |
6b53bb85 | 1709 | create_process (proc, (char **) new_argv, current_dir); |
d0d6b7c5 | 1710 | |
b0310da4 | 1711 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1712 | } |
1713 | ||
b0310da4 | 1714 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1715 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1716 | an error and the process wasn't started successfully, so we should |
1717 | remove it from the process list. */ | |
1718 | static Lisp_Object | |
1719 | start_process_unwind (proc) | |
1720 | Lisp_Object proc; | |
1721 | { | |
bcd69aea | 1722 | if (!PROCESSP (proc)) |
b0310da4 JB |
1723 | abort (); |
1724 | ||
1725 | /* Was PROC started successfully? */ | |
188d6c4e | 1726 | if (XINT (XPROCESS (proc)->pid) <= 0) |
b0310da4 JB |
1727 | remove_process (proc); |
1728 | ||
1729 | return Qnil; | |
1730 | } | |
1731 | ||
ff6daed3 | 1732 | static void |
30904ab7 GM |
1733 | create_process_1 (timer) |
1734 | struct atimer *timer; | |
d0d6b7c5 | 1735 | { |
30904ab7 | 1736 | /* Nothing to do. */ |
d0d6b7c5 JB |
1737 | } |
1738 | ||
30904ab7 | 1739 | |
d0d6b7c5 JB |
1740 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1741 | #ifdef USG | |
1742 | #ifdef SIGCHLD | |
1743 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1744 | ||
1745 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1746 | int sigchld_deferred; | |
1747 | ||
1748 | SIGTYPE | |
1749 | create_process_sigchld () | |
1750 | { | |
1751 | signal (SIGCHLD, create_process_sigchld); | |
1752 | ||
1753 | sigchld_deferred = 1; | |
1754 | } | |
1755 | #endif | |
1756 | #endif | |
1757 | #endif | |
1758 | ||
1759 | #ifndef VMS /* VMS version of this function is in vmsproc.c. */ | |
6b53bb85 | 1760 | void |
1e30af70 | 1761 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1762 | Lisp_Object process; |
1763 | char **new_argv; | |
1e30af70 | 1764 | Lisp_Object current_dir; |
d0d6b7c5 | 1765 | { |
ecd1f654 | 1766 | int pid, inchannel, outchannel; |
d0d6b7c5 | 1767 | int sv[2]; |
0dc70c33 KH |
1768 | #ifdef POSIX_SIGNALS |
1769 | sigset_t procmask; | |
1770 | sigset_t blocked; | |
1771 | struct sigaction sigint_action; | |
1772 | struct sigaction sigquit_action; | |
1773 | #ifdef AIX | |
1774 | struct sigaction sighup_action; | |
1775 | #endif | |
1776 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1777 | #if 0 |
d0d6b7c5 JB |
1778 | #ifdef SIGCHLD |
1779 | SIGTYPE (*sigchld)(); | |
1780 | #endif | |
41d03b9a | 1781 | #endif /* 0 */ |
0dc70c33 | 1782 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1783 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1784 | volatile int forkin, forkout; | |
1785 | volatile int pty_flag = 0; | |
3ec68006 | 1786 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1787 | extern char **environ; |
3ec68006 | 1788 | #endif |
d0d6b7c5 | 1789 | |
d0d6b7c5 JB |
1790 | inchannel = outchannel = -1; |
1791 | ||
1792 | #ifdef HAVE_PTYS | |
fe45da4e | 1793 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1794 | outchannel = inchannel = allocate_pty (); |
1795 | ||
d0d6b7c5 JB |
1796 | if (inchannel >= 0) |
1797 | { | |
2af70a0c RS |
1798 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1799 | /* On most USG systems it does not work to open the pty's tty here, | |
1800 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1801 | #ifdef O_NOCTTY |
1802 | /* Don't let this terminal become our controlling terminal | |
1803 | (in case we don't have one). */ | |
68c45bf0 | 1804 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1805 | #else |
68c45bf0 | 1806 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1807 | #endif |
1808 | if (forkin < 0) | |
1809 | report_file_error ("Opening pty", Qnil); | |
21375f1e YM |
1810 | #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY) |
1811 | /* In the case that vfork is defined as fork, the parent process | |
1812 | (Emacs) may send some data before the child process completes | |
1813 | tty options setup. So we setup tty before forking. */ | |
1814 | child_setup_tty (forkout); | |
1815 | #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */ | |
d0d6b7c5 JB |
1816 | #else |
1817 | forkin = forkout = -1; | |
2af70a0c | 1818 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1819 | pty_flag = 1; |
1820 | } | |
1821 | else | |
1822 | #endif /* HAVE_PTYS */ | |
1823 | #ifdef SKTPAIR | |
1824 | { | |
1825 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv) < 0) | |
1826 | report_file_error ("Opening socketpair", Qnil); | |
1827 | outchannel = inchannel = sv[0]; | |
1828 | forkout = forkin = sv[1]; | |
1829 | } | |
1830 | #else /* not SKTPAIR */ | |
1831 | { | |
fc14013c KH |
1832 | int tem; |
1833 | tem = pipe (sv); | |
1834 | if (tem < 0) | |
1835 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1836 | inchannel = sv[0]; |
1837 | forkout = sv[1]; | |
fc14013c KH |
1838 | tem = pipe (sv); |
1839 | if (tem < 0) | |
1840 | { | |
68c45bf0 PE |
1841 | emacs_close (inchannel); |
1842 | emacs_close (forkout); | |
fc14013c KH |
1843 | report_file_error ("Creating pipe", Qnil); |
1844 | } | |
d0d6b7c5 JB |
1845 | outchannel = sv[1]; |
1846 | forkin = sv[0]; | |
1847 | } | |
1848 | #endif /* not SKTPAIR */ | |
1849 | ||
1850 | #if 0 | |
1851 | /* Replaced by close_process_descs */ | |
1852 | set_exclusive_use (inchannel); | |
1853 | set_exclusive_use (outchannel); | |
1854 | #endif | |
1855 | ||
1856 | /* Stride people say it's a mystery why this is needed | |
1857 | as well as the O_NDELAY, but that it fails without this. */ | |
1858 | #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) | |
1859 | { | |
1860 | int one = 1; | |
1861 | ioctl (inchannel, FIONBIO, &one); | |
1862 | } | |
1863 | #endif | |
1864 | ||
1865 | #ifdef O_NONBLOCK | |
1866 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1867 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1868 | #else |
1869 | #ifdef O_NDELAY | |
1870 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1871 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1872 | #endif |
1873 | #endif | |
1874 | ||
1875 | /* Record this as an active process, with its channels. | |
1876 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1877 | chan_process[inchannel] = process; | |
1d056e64 KH |
1878 | XSETINT (XPROCESS (process)->infd, inchannel); |
1879 | XSETINT (XPROCESS (process)->outfd, outchannel); | |
16782258 JD |
1880 | |
1881 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1882 | It was only used for getting the foreground tty process, so now | |
1883 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1884 | more portable (see USG_SUBTTY_WORKS above). */ | |
1885 | ||
d0d6b7c5 JB |
1886 | XPROCESS (process)->pty_flag = (pty_flag ? Qt : Qnil); |
1887 | XPROCESS (process)->status = Qrun; | |
03f04413 | 1888 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1889 | |
1890 | /* Delay interrupts until we have a chance to store | |
1891 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1892 | #ifdef POSIX_SIGNALS |
1893 | sigemptyset (&blocked); | |
1894 | #ifdef SIGCHLD | |
1895 | sigaddset (&blocked, SIGCHLD); | |
1896 | #endif | |
351e611f | 1897 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1898 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1899 | this sets the parent's signal handlers as well as the child's. | |
1900 | So delay all interrupts whose handlers the child might munge, | |
1901 | and record the current handlers so they can be restored later. */ | |
1902 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1903 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1904 | #ifdef AIX | |
1905 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1906 | #endif | |
351e611f | 1907 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
1908 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
1909 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
1910 | #ifdef SIGCHLD |
1911 | #ifdef BSD4_1 | |
1912 | sighold (SIGCHLD); | |
1913 | #else /* not BSD4_1 */ | |
6df54671 | 1914 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
1915 | sigsetmask (sigmask (SIGCHLD)); |
1916 | #else /* ordinary USG */ | |
1917 | #if 0 | |
1918 | sigchld_deferred = 0; | |
1919 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
1920 | #endif | |
1921 | #endif /* ordinary USG */ | |
1922 | #endif /* not BSD4_1 */ | |
1923 | #endif /* SIGCHLD */ | |
0dc70c33 | 1924 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 1925 | |
3081bf8d | 1926 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1927 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1928 | if (inchannel > max_process_desc) |
1929 | max_process_desc = inchannel; | |
1930 | ||
d0d6b7c5 JB |
1931 | /* Until we store the proper pid, enable sigchld_handler |
1932 | to recognize an unknown pid as standing for this process. | |
1933 | It is very important not to let this `marker' value stay | |
1934 | in the table after this function has returned; if it does | |
1935 | it might cause call-process to hang and subsequent asynchronous | |
1936 | processes to get their return values scrambled. */ | |
1937 | XSETINT (XPROCESS (process)->pid, -1); | |
1938 | ||
ececcbec | 1939 | BLOCK_INPUT; |
177c0ea7 | 1940 | |
d0d6b7c5 JB |
1941 | { |
1942 | /* child_setup must clobber environ on systems with true vfork. | |
1943 | Protect it from permanent change. */ | |
1944 | char **save_environ = environ; | |
1945 | ||
14dc6093 | 1946 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1947 | |
e98d950b | 1948 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1949 | pid = vfork (); |
1950 | if (pid == 0) | |
e98d950b | 1951 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1952 | { |
1953 | int xforkin = forkin; | |
1954 | int xforkout = forkout; | |
1955 | ||
1956 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1957 | but fails to handle all the cases. */ | |
1958 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1959 | sigsetmask (SIGEMPTYMASK); | |
1960 | #endif | |
1961 | ||
1962 | /* Make the pty be the controlling terminal of the process. */ | |
1963 | #ifdef HAVE_PTYS | |
1964 | /* First, disconnect its current controlling terminal. */ | |
1965 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1966 | /* We tried doing setsid only if pty_flag, but it caused |
1967 | process_set_signal to fail on SGI when using a pipe. */ | |
1968 | setsid (); | |
ce4c9c90 | 1969 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 1970 | if (pty_flag) |
39e9ebcd | 1971 | { |
39e9ebcd RS |
1972 | #ifdef TIOCSCTTY |
1973 | /* We ignore the return value | |
1974 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1975 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1976 | #endif |
39e9ebcd | 1977 | } |
d0d6b7c5 | 1978 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1979 | #ifdef USG |
000ab717 | 1980 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1981 | afterwards. Otherwise, we lose our controlling tty which |
1982 | is set when we open the pty. */ | |
1983 | setpgrp (); | |
1984 | #endif /* USG */ | |
1985 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
1986 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
1987 | if (pty_flag && xforkin >= 0) | |
1988 | { | |
1989 | struct termios t; | |
1990 | tcgetattr (xforkin, &t); | |
1991 | t.c_lflag = LDISC1; | |
1992 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1993 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1994 | } |
1995 | #else | |
aafadd9f | 1996 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1997 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1998 | { |
1999 | /* Use new line discipline. */ | |
2000 | int ldisc = NTTYDISC; | |
4458f555 | 2001 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 2002 | } |
000ab717 | 2003 | #endif |
9bcf8ec6 | 2004 | #endif |
177c0ea7 | 2005 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
2006 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
2007 | can do TIOCSPGRP only to the process's controlling tty. */ | |
2008 | if (pty_flag) | |
2009 | { | |
177c0ea7 | 2010 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 2011 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 2012 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 2013 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 2014 | emacs_close (j); |
5a570e37 | 2015 | #ifndef USG |
d0d6b7c5 JB |
2016 | /* In order to get a controlling terminal on some versions |
2017 | of BSD, it is necessary to put the process in pgrp 0 | |
2018 | before it opens the terminal. */ | |
99c1aeca | 2019 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
2020 | setpgid (0, 0); |
2021 | #else | |
d0d6b7c5 | 2022 | setpgrp (0, 0); |
3ea1d291 | 2023 | #endif |
d0d6b7c5 JB |
2024 | #endif |
2025 | } | |
2026 | #endif /* TIOCNOTTY */ | |
2027 | ||
99153b9e | 2028 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 2029 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
2030 | conditional on TIOCSPGRP, |
2031 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
2032 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
2033 | that system does seem to need this code, even though | |
2034 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
2035 | /* Now close the pty (if we had it open) and reopen it. |
2036 | This makes the pty the controlling terminal of the subprocess. */ | |
2037 | if (pty_flag) | |
2038 | { | |
99e3d726 RS |
2039 | #ifdef SET_CHILD_PTY_PGRP |
2040 | int pgrp = getpid (); | |
2041 | #endif | |
2042 | ||
68c45bf0 PE |
2043 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2044 | would work? */ | |
d0d6b7c5 | 2045 | if (xforkin >= 0) |
68c45bf0 PE |
2046 | emacs_close (xforkin); |
2047 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2048 | |
4aa54ba8 RS |
2049 | if (xforkin < 0) |
2050 | { | |
68c45bf0 PE |
2051 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2052 | emacs_write (1, pty_name, strlen (pty_name)); | |
2053 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2054 | _exit (1); |
2055 | } | |
2056 | ||
99e3d726 RS |
2057 | #ifdef SET_CHILD_PTY_PGRP |
2058 | ioctl (xforkin, TIOCSPGRP, &pgrp); | |
2059 | ioctl (xforkout, TIOCSPGRP, &pgrp); | |
2060 | #endif | |
d0d6b7c5 | 2061 | } |
99153b9e | 2062 | #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */ |
e9bf058b | 2063 | |
d0d6b7c5 | 2064 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2065 | if (pty_flag) |
2066 | { | |
2067 | SETUP_SLAVE_PTY; | |
2068 | } | |
d0d6b7c5 JB |
2069 | #endif /* SETUP_SLAVE_PTY */ |
2070 | #ifdef AIX | |
2071 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2072 | Now reenable it in the child, so it will die when we want it to. */ | |
2073 | if (pty_flag) | |
2074 | signal (SIGHUP, SIG_DFL); | |
2075 | #endif | |
2076 | #endif /* HAVE_PTYS */ | |
2077 | ||
0dc70c33 KH |
2078 | signal (SIGINT, SIG_DFL); |
2079 | signal (SIGQUIT, SIG_DFL); | |
2080 | ||
2081 | /* Stop blocking signals in the child. */ | |
2082 | #ifdef POSIX_SIGNALS | |
2083 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2084 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2085 | #ifdef SIGCHLD |
2086 | #ifdef BSD4_1 | |
2087 | sigrelse (SIGCHLD); | |
2088 | #else /* not BSD4_1 */ | |
6df54671 | 2089 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2090 | sigsetmask (SIGEMPTYMASK); |
2091 | #else /* ordinary USG */ | |
63528b78 | 2092 | #if 0 |
d0d6b7c5 | 2093 | signal (SIGCHLD, sigchld); |
63528b78 | 2094 | #endif |
d0d6b7c5 JB |
2095 | #endif /* ordinary USG */ |
2096 | #endif /* not BSD4_1 */ | |
2097 | #endif /* SIGCHLD */ | |
0dc70c33 | 2098 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2099 | |
21375f1e | 2100 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
ab01d0a8 RS |
2101 | if (pty_flag) |
2102 | child_setup_tty (xforkout); | |
21375f1e | 2103 | #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */ |
e98d950b RS |
2104 | #ifdef WINDOWSNT |
2105 | pid = child_setup (xforkin, xforkout, xforkout, | |
2106 | new_argv, 1, current_dir); | |
177c0ea7 | 2107 | #else /* not WINDOWSNT */ |
d0d6b7c5 | 2108 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2109 | new_argv, 1, current_dir); |
e98d950b | 2110 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2111 | } |
2112 | environ = save_environ; | |
2113 | } | |
2114 | ||
ececcbec RS |
2115 | UNBLOCK_INPUT; |
2116 | ||
4a127b3b | 2117 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2118 | if (pid < 0) |
6311cf58 RS |
2119 | { |
2120 | if (forkin >= 0) | |
68c45bf0 | 2121 | emacs_close (forkin); |
6311cf58 | 2122 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2123 | emacs_close (forkout); |
6311cf58 | 2124 | } |
4a127b3b KH |
2125 | else |
2126 | { | |
2127 | /* vfork succeeded. */ | |
2128 | XSETFASTINT (XPROCESS (process)->pid, pid); | |
d0d6b7c5 | 2129 | |
e98d950b | 2130 | #ifdef WINDOWSNT |
4a127b3b | 2131 | register_child (pid, inchannel); |
e98d950b RS |
2132 | #endif /* WINDOWSNT */ |
2133 | ||
4a127b3b KH |
2134 | /* If the subfork execv fails, and it exits, |
2135 | this close hangs. I don't know why. | |
2136 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2137 | { |
2138 | struct atimer *timer; | |
2139 | EMACS_TIME offset; | |
177c0ea7 | 2140 | |
30904ab7 GM |
2141 | stop_polling (); |
2142 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2143 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2144 | |
30904ab7 GM |
2145 | if (forkin >= 0) |
2146 | emacs_close (forkin); | |
2147 | ||
2148 | cancel_atimer (timer); | |
2149 | start_polling (); | |
2150 | } | |
177c0ea7 | 2151 | |
4a127b3b | 2152 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2153 | emacs_close (forkout); |
d0d6b7c5 | 2154 | |
875e6b94 | 2155 | #ifdef HAVE_PTYS |
4a127b3b KH |
2156 | if (pty_flag) |
2157 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2158 | else | |
875e6b94 | 2159 | #endif |
4a127b3b KH |
2160 | XPROCESS (process)->tty_name = Qnil; |
2161 | } | |
3b9a3dfa | 2162 | |
4a127b3b KH |
2163 | /* Restore the signal state whether vfork succeeded or not. |
2164 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2165 | #ifdef POSIX_SIGNALS |
351e611f | 2166 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2167 | /* Restore the parent's signal handlers. */ |
2168 | sigaction (SIGINT, &sigint_action, 0); | |
2169 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2170 | #ifdef AIX | |
2171 | sigaction (SIGHUP, &sighup_action, 0); | |
2172 | #endif | |
351e611f | 2173 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2174 | /* Stop blocking signals in the parent. */ |
2175 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2176 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2177 | #ifdef SIGCHLD |
2178 | #ifdef BSD4_1 | |
2179 | sigrelse (SIGCHLD); | |
2180 | #else /* not BSD4_1 */ | |
6df54671 | 2181 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2182 | sigsetmask (SIGEMPTYMASK); |
2183 | #else /* ordinary USG */ | |
2184 | #if 0 | |
2185 | signal (SIGCHLD, sigchld); | |
2186 | /* Now really handle any of these signals | |
2187 | that came in during this function. */ | |
2188 | if (sigchld_deferred) | |
2189 | kill (getpid (), SIGCHLD); | |
2190 | #endif | |
2191 | #endif /* ordinary USG */ | |
2192 | #endif /* not BSD4_1 */ | |
2193 | #endif /* SIGCHLD */ | |
0dc70c33 | 2194 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2195 | |
2196 | /* Now generate the error if vfork failed. */ | |
2197 | if (pid < 0) | |
2198 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 JB |
2199 | } |
2200 | #endif /* not VMS */ | |
2201 | ||
e690ca94 | 2202 | \f |
d0d6b7c5 JB |
2203 | #ifdef HAVE_SOCKETS |
2204 | ||
e690ca94 KS |
2205 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2206 | The address family of sa is not included in the result. */ | |
2207 | ||
2208 | static Lisp_Object | |
2209 | conv_sockaddr_to_lisp (sa, len) | |
2210 | struct sockaddr *sa; | |
2211 | int len; | |
2212 | { | |
2213 | Lisp_Object address; | |
2214 | int i; | |
2215 | unsigned char *cp; | |
2216 | register struct Lisp_Vector *p; | |
2217 | ||
2218 | switch (sa->sa_family) | |
2219 | { | |
2220 | case AF_INET: | |
2221 | { | |
2222 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2223 | len = sizeof (sin->sin_addr) + 1; | |
2224 | address = Fmake_vector (make_number (len), Qnil); | |
2225 | p = XVECTOR (address); | |
2226 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
2227 | cp = (unsigned char *)&sin->sin_addr; | |
2228 | break; | |
2229 | } | |
e1652a86 KS |
2230 | #ifdef AF_INET6 |
2231 | case AF_INET6: | |
2232 | { | |
2233 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2234 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2235 | len = sizeof (sin6->sin6_addr)/2 + 1; | |
2236 | address = Fmake_vector (make_number (len), Qnil); | |
2237 | p = XVECTOR (address); | |
2238 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2239 | for (i = 0; i < len; i++) | |
2240 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2241 | return address; | |
2242 | } | |
2243 | #endif | |
e690ca94 KS |
2244 | #ifdef HAVE_LOCAL_SOCKETS |
2245 | case AF_LOCAL: | |
2246 | { | |
fb23673a EZ |
2247 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2248 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2249 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2250 | break; |
fb23673a | 2251 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2252 | } |
2253 | #endif | |
2254 | default: | |
2255 | len -= sizeof (sa->sa_family); | |
2256 | address = Fcons (make_number (sa->sa_family), | |
2257 | Fmake_vector (make_number (len), Qnil)); | |
2258 | p = XVECTOR (XCDR (address)); | |
2259 | cp = (unsigned char *) sa + sizeof (sa->sa_family); | |
2260 | break; | |
2261 | } | |
2262 | ||
2263 | i = 0; | |
2264 | while (i < len) | |
2265 | p->contents[i++] = make_number (*cp++); | |
2266 | ||
2267 | return address; | |
2268 | } | |
2269 | ||
2270 | ||
2271 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2272 | ||
2273 | static int | |
2274 | get_lisp_to_sockaddr_size (address, familyp) | |
2275 | Lisp_Object address; | |
2276 | int *familyp; | |
2277 | { | |
2278 | register struct Lisp_Vector *p; | |
2279 | ||
2280 | if (VECTORP (address)) | |
2281 | { | |
2282 | p = XVECTOR (address); | |
2283 | if (p->size == 5) | |
2284 | { | |
2285 | *familyp = AF_INET; | |
2286 | return sizeof (struct sockaddr_in); | |
2287 | } | |
e1652a86 KS |
2288 | #ifdef AF_INET6 |
2289 | else if (p->size == 9) | |
2290 | { | |
2291 | *familyp = AF_INET6; | |
2292 | return sizeof (struct sockaddr_in6); | |
2293 | } | |
2294 | #endif | |
e690ca94 KS |
2295 | } |
2296 | #ifdef HAVE_LOCAL_SOCKETS | |
2297 | else if (STRINGP (address)) | |
2298 | { | |
2299 | *familyp = AF_LOCAL; | |
2300 | return sizeof (struct sockaddr_un); | |
2301 | } | |
2302 | #endif | |
2303 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2304 | { | |
2305 | struct sockaddr *sa; | |
2306 | *familyp = XINT (XCAR (address)); | |
2307 | p = XVECTOR (XCDR (address)); | |
2308 | return p->size + sizeof (sa->sa_family); | |
2309 | } | |
2310 | return 0; | |
2311 | } | |
2312 | ||
2313 | /* Convert an address object (vector or string) to an internal sockaddr. | |
2314 | Format of address has already been validated by size_lisp_to_sockaddr. */ | |
2315 | ||
2316 | static void | |
2317 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2318 | int family; | |
2319 | Lisp_Object address; | |
2320 | struct sockaddr *sa; | |
2321 | int len; | |
2322 | { | |
2323 | register struct Lisp_Vector *p; | |
34967d0f | 2324 | register unsigned char *cp = NULL; |
e690ca94 KS |
2325 | register int i; |
2326 | ||
2327 | bzero (sa, len); | |
2328 | sa->sa_family = family; | |
2329 | ||
2330 | if (VECTORP (address)) | |
2331 | { | |
2332 | p = XVECTOR (address); | |
2333 | if (family == AF_INET) | |
2334 | { | |
2335 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2336 | len = sizeof (sin->sin_addr) + 1; | |
2337 | i = XINT (p->contents[--len]); | |
2338 | sin->sin_port = htons (i); | |
2339 | cp = (unsigned char *)&sin->sin_addr; | |
2340 | } | |
e1652a86 KS |
2341 | #ifdef AF_INET6 |
2342 | else if (family == AF_INET6) | |
2343 | { | |
2344 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2345 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2346 | len = sizeof (sin6->sin6_addr) + 1; | |
2347 | i = XINT (p->contents[--len]); | |
2348 | sin6->sin6_port = htons (i); | |
2349 | for (i = 0; i < len; i++) | |
2350 | if (INTEGERP (p->contents[i])) | |
2351 | { | |
2352 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2353 | ip6[i] = ntohs (j); | |
2354 | } | |
2355 | return; | |
2356 | } | |
2357 | #endif | |
e690ca94 KS |
2358 | } |
2359 | else if (STRINGP (address)) | |
2360 | { | |
2361 | #ifdef HAVE_LOCAL_SOCKETS | |
2362 | if (family == AF_LOCAL) | |
2363 | { | |
fb23673a | 2364 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2365 | cp = SDATA (address); |
fb23673a EZ |
2366 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2367 | sockun->sun_path[i] = *cp++; | |
e690ca94 KS |
2368 | } |
2369 | #endif | |
2370 | return; | |
2371 | } | |
2372 | else | |
2373 | { | |
2374 | p = XVECTOR (XCDR (address)); | |
2375 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2376 | } | |
2377 | ||
2378 | for (i = 0; i < len; i++) | |
2379 | if (INTEGERP (p->contents[i])) | |
2380 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2381 | } | |
2382 | ||
2383 | #ifdef DATAGRAM_SOCKETS | |
2384 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2385 | 1, 1, 0, | |
2386 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2387 | (process) | |
2388 | Lisp_Object process; | |
2389 | { | |
2390 | int channel; | |
2391 | ||
2392 | CHECK_PROCESS (process); | |
2393 | ||
2394 | if (!DATAGRAM_CONN_P (process)) | |
2395 | return Qnil; | |
2396 | ||
bed9664a | 2397 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2398 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2399 | datagram_address[channel].len); | |
2400 | } | |
2401 | ||
2402 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2403 | 2, 2, 0, | |
2404 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2405 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2406 | (process, address) | |
2407 | Lisp_Object process, address; | |
2408 | { | |
2409 | int channel; | |
2410 | int family, len; | |
2411 | ||
2412 | CHECK_PROCESS (process); | |
2413 | ||
2414 | if (!DATAGRAM_CONN_P (process)) | |
2415 | return Qnil; | |
2416 | ||
bed9664a | 2417 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2418 | |
2419 | len = get_lisp_to_sockaddr_size (address, &family); | |
2420 | if (datagram_address[channel].len != len) | |
2421 | return Qnil; | |
2422 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2423 | return address; | |
2424 | } | |
2425 | #endif | |
2426 | \f | |
2427 | ||
2428 | static struct socket_options { | |
2429 | /* The name of this option. Should be lowercase version of option | |
177c0ea7 | 2430 | name without SO_ prefix. */ |
e690ca94 | 2431 | char *name; |
e690ca94 KS |
2432 | /* Option level SOL_... */ |
2433 | int optlevel; | |
2434 | /* Option number SO_... */ | |
2435 | int optnum; | |
151ec9e2 | 2436 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2ccf3102 | 2437 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; |
e690ca94 KS |
2438 | } socket_options[] = |
2439 | { | |
2440 | #ifdef SO_BINDTODEVICE | |
151ec9e2 | 2441 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2442 | #endif |
2443 | #ifdef SO_BROADCAST | |
2ccf3102 | 2444 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2445 | #endif |
2446 | #ifdef SO_DONTROUTE | |
2ccf3102 | 2447 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2448 | #endif |
2449 | #ifdef SO_KEEPALIVE | |
2ccf3102 | 2450 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2451 | #endif |
2452 | #ifdef SO_LINGER | |
2ccf3102 | 2453 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2454 | #endif |
2455 | #ifdef SO_OOBINLINE | |
2ccf3102 | 2456 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2457 | #endif |
2458 | #ifdef SO_PRIORITY | |
2ccf3102 | 2459 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2460 | #endif |
2461 | #ifdef SO_REUSEADDR | |
2ccf3102 | 2462 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2463 | #endif |
2ccf3102 | 2464 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2465 | }; |
2466 | ||
2ccf3102 | 2467 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2468 | |
2ccf3102 KS |
2469 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2470 | Signals an error if setting a known option fails. | |
2471 | */ | |
e690ca94 KS |
2472 | |
2473 | static int | |
2ccf3102 | 2474 | set_socket_option (s, opt, val) |
e690ca94 | 2475 | int s; |
2ccf3102 | 2476 | Lisp_Object opt, val; |
e690ca94 | 2477 | { |
2ccf3102 KS |
2478 | char *name; |
2479 | struct socket_options *sopt; | |
2480 | int ret = 0; | |
e690ca94 | 2481 | |
2ccf3102 | 2482 | CHECK_SYMBOL (opt); |
e690ca94 | 2483 | |
2ccf3102 KS |
2484 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2485 | for (sopt = socket_options; sopt->name; sopt++) | |
2486 | if (strcmp (name, sopt->name) == 0) | |
2487 | break; | |
e690ca94 | 2488 | |
2ccf3102 KS |
2489 | switch (sopt->opttype) |
2490 | { | |
2491 | case SOPT_BOOL: | |
2492 | { | |
2493 | int optval; | |
2494 | optval = NILP (val) ? 0 : 1; | |
2495 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2496 | &optval, sizeof (optval)); | |
2497 | break; | |
2498 | } | |
e690ca94 | 2499 | |
2ccf3102 KS |
2500 | case SOPT_INT: |
2501 | { | |
2502 | int optval; | |
2503 | if (INTEGERP (val)) | |
2504 | optval = XINT (val); | |
2505 | else | |
2506 | error ("Bad option value for %s", name); | |
2507 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2508 | &optval, sizeof (optval)); | |
2509 | break; | |
2510 | } | |
e690ca94 | 2511 | |
151ec9e2 KS |
2512 | #ifdef SO_BINDTODEVICE |
2513 | case SOPT_IFNAME: | |
2ccf3102 | 2514 | { |
151ec9e2 KS |
2515 | char devname[IFNAMSIZ+1]; |
2516 | ||
2517 | /* This is broken, at least in the Linux 2.4 kernel. | |
2518 | To unbind, the arg must be a zero integer, not the empty string. | |
2519 | This should work on all systems. KFS. 2003-09-23. */ | |
2520 | bzero (devname, sizeof devname); | |
2521 | if (STRINGP (val)) | |
2522 | { | |
2523 | char *arg = (char *) SDATA (val); | |
2524 | int len = min (strlen (arg), IFNAMSIZ); | |
2525 | bcopy (arg, devname, len); | |
2526 | } | |
2527 | else if (!NILP (val)) | |
2ccf3102 KS |
2528 | error ("Bad option value for %s", name); |
2529 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
151ec9e2 KS |
2530 | devname, IFNAMSIZ); |
2531 | break; | |
2ccf3102 | 2532 | } |
151ec9e2 | 2533 | #endif |
e690ca94 | 2534 | |
177c0ea7 | 2535 | #ifdef SO_LINGER |
2ccf3102 KS |
2536 | case SOPT_LINGER: |
2537 | { | |
2538 | struct linger linger; | |
e690ca94 | 2539 | |
2ccf3102 KS |
2540 | linger.l_onoff = 1; |
2541 | linger.l_linger = 0; | |
2542 | if (INTEGERP (val)) | |
2543 | linger.l_linger = XINT (val); | |
2544 | else | |
2545 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2546 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2547 | &linger, sizeof (linger)); | |
2548 | break; | |
2549 | } | |
e690ca94 | 2550 | #endif |
2ccf3102 KS |
2551 | |
2552 | default: | |
2553 | return 0; | |
e690ca94 | 2554 | } |
2ccf3102 KS |
2555 | |
2556 | if (ret < 0) | |
2557 | report_file_error ("Cannot set network option", | |
2558 | Fcons (opt, Fcons (val, Qnil))); | |
2559 | return (1 << sopt->optbit); | |
e690ca94 KS |
2560 | } |
2561 | ||
2ccf3102 KS |
2562 | |
2563 | DEFUN ("set-network-process-option", | |
2564 | Fset_network_process_option, Sset_network_process_option, | |
2565 | 3, 4, 0, | |
2566 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2567 | See `make-network-process' for a list of options and values. | |
2568 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2569 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2570 | (process, option, value, no_error) | |
2571 | Lisp_Object process, option, value; | |
2572 | Lisp_Object no_error; | |
e690ca94 | 2573 | { |
e1283999 | 2574 | int s; |
151ec9e2 | 2575 | struct Lisp_Process *p; |
e690ca94 | 2576 | |
e690ca94 | 2577 | CHECK_PROCESS (process); |
151ec9e2 KS |
2578 | p = XPROCESS (process); |
2579 | if (!NETCONN1_P (p)) | |
2580 | error ("Process is not a network process"); | |
2ccf3102 | 2581 | |
151ec9e2 | 2582 | s = XINT (p->infd); |
2ccf3102 KS |
2583 | if (s < 0) |
2584 | error ("Process is not running"); | |
2585 | ||
2586 | if (set_socket_option (s, option, value)) | |
151ec9e2 KS |
2587 | { |
2588 | p->childp = Fplist_put (p->childp, option, value); | |
2589 | return Qt; | |
2590 | } | |
2ccf3102 KS |
2591 | |
2592 | if (NILP (no_error)) | |
2593 | error ("Unknown or unsupported option"); | |
2594 | ||
2595 | return Qnil; | |
e690ca94 | 2596 | } |
2ccf3102 | 2597 | |
e690ca94 | 2598 | \f |
e690ca94 KS |
2599 | /* A version of request_sigio suitable for a record_unwind_protect. */ |
2600 | ||
ff6daed3 | 2601 | static Lisp_Object |
e690ca94 KS |
2602 | unwind_request_sigio (dummy) |
2603 | Lisp_Object dummy; | |
2604 | { | |
2605 | if (interrupt_input) | |
2606 | request_sigio (); | |
2607 | return Qnil; | |
2608 | } | |
2609 | ||
2610 | /* Create a network stream/datagram client/server process. Treated | |
2611 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2612 | differences are in status display and process deletion. A network |
2613 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2614 | stop/continue it and deactivate/close it via delete-process */ |
2615 | ||
177c0ea7 JB |
2616 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2617 | 0, MANY, 0, | |
e690ca94 KS |
2618 | doc: /* Create and return a network server or client process. |
2619 | ||
fa9d4315 | 2620 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2621 | input and output work as for subprocesses and `delete-process' closes |
2622 | a network connection. However, a network process has no process id, | |
d22426e1 | 2623 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2624 | processes. |
2625 | ||
2626 | Arguments are specified as keyword/argument pairs. The following | |
2627 | arguments are defined: | |
2628 | ||
2629 | :name NAME -- NAME is name for process. It is modified if necessary | |
2630 | to make it unique. | |
2631 | ||
2632 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2633 | with the process. Process output goes at end of that buffer, unless | |
2634 | you specify an output stream or filter function to handle the output. | |
2635 | BUFFER may be also nil, meaning that this process is not associated | |
2636 | with any buffer. | |
2637 | ||
2638 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2639 | address. The symbol `local' specifies the local host. If specified | |
2640 | for a server process, it must be a valid name or address for the local | |
2641 | host, and only clients connecting to that address will be accepted. | |
2642 | ||
2643 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2644 | integer specifying a port number to connect to. If SERVICE is t, | |
2645 | a random port number is selected for the server. | |
2646 | ||
9057ff80 KS |
2647 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
2648 | stream type connection, `datagram' creates a datagram type connection. | |
2649 | ||
e690ca94 | 2650 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2651 | service specified by HOST and SERVICE. The default (nil) is to use |
2652 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2653 | and port number specified by HOST and SERVICE. Other address families | |
2654 | supported are: | |
e690ca94 | 2655 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2656 | ipv4 -- use IPv4 address family only. |
2657 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2658 | |
2659 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2660 | This parameter is ignored when opening a client process. When specified | |
2661 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2662 | ||
2663 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2664 | connection. This parameter is ignored when opening a stream server | |
2665 | process. For a datagram server process, it specifies the initial | |
2666 | setting of the remote datagram address. When specified for a client | |
2667 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2668 | ||
2669 | The format of ADDRESS depends on the address family: | |
2670 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2671 | corresponding to numeric IP address A.B.C.D and port number P. | |
2672 | - A local address is represented as a string with the address in the | |
2673 | local address space. | |
2674 | - An "unsupported family" address is represented by a cons (F . AV) | |
2675 | where F is the family number and AV is a vector containing the socket | |
2676 | address data with one element per address data byte. Do not rely on | |
2677 | this format in portable code, as it may depend on implementation | |
2678 | defined constants, data sizes, and data structure alignment. | |
2679 | ||
2ccf3102 KS |
2680 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2681 | system used for both reading and writing for this process. If CODING | |
2682 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2683 | ENCODING is used for writing. | |
e690ca94 KS |
2684 | |
2685 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2686 | return without waiting for the connection to complete; instead, the | |
2687 | sentinel function will be called with second arg matching "open" (if | |
2688 | successful) or "failed" when the connect completes. Default is to use | |
2689 | a blocking connect (i.e. wait) for stream type connections. | |
2690 | ||
2691 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2692 | running when Emacs is exited. |
e690ca94 KS |
2693 | |
2694 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2695 | In the stopped state, a server process does not accept new | |
2696 | connections, and a client process does not handle incoming traffic. | |
2697 | The stopped state is cleared by `continue-process' and set by | |
2698 | `stop-process'. | |
2699 | ||
2700 | :filter FILTER -- Install FILTER as the process filter. | |
2701 | ||
7392e23c KS |
2702 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2703 | process filter are multibyte, otherwise they are unibyte. | |
2704 | If this keyword is not specified, the strings are multibyte iff | |
03f04413 KH |
2705 | `default-enable-multibyte-characters' is non-nil. |
2706 | ||
e690ca94 KS |
2707 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2708 | ||
2709 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2710 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2711 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2712 | is the server process, CLIENT is the new process for the connection, | |
2713 | and MESSAGE is a string. | |
2714 | ||
faa7db08 | 2715 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2716 | |
2ccf3102 | 2717 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2718 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
2ccf3102 KS |
2719 | If QLEN is an integer, it is used as the max. length of the server's |
2720 | pending connection queue (also known as the backlog); the default | |
2721 | queue length is 5. Default is to create a client process. | |
2722 | ||
2723 | The following network options can be specified for this connection: | |
2724 | ||
2ccf3102 KS |
2725 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. |
2726 | :dontroute BOOL -- Only send to directly connected hosts. | |
2727 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2728 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2729 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2730 | :priority INT -- Set protocol defined priority for sent packets. | |
2731 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2732 | (this is allowed by default for a server process). | |
151ec9e2 KS |
2733 | :bindtodevice NAME -- bind to interface NAME. Using this may require |
2734 | special privileges on some systems. | |
2ccf3102 KS |
2735 | |
2736 | Consult the relevant system programmer's manual pages for more | |
2737 | information on using these options. | |
2738 | ||
2739 | ||
2740 | A server process will listen for and accept connections from clients. | |
2741 | When a client connection is accepted, a new network process is created | |
2742 | for the connection with the following parameters: | |
e690ca94 | 2743 | |
e690ca94 KS |
2744 | - The client's process name is constructed by concatenating the server |
2745 | process' NAME and a client identification string. | |
2746 | - If the FILTER argument is non-nil, the client process will not get a | |
2747 | separate process buffer; otherwise, the client's process buffer is a newly | |
2748 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2749 | NAME concatenated with the client identification string. |
e690ca94 KS |
2750 | - The connection type and the process filter and sentinel parameters are |
2751 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2752 | - The client process' contact info is set according to the client's | |
2753 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2754 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2755 | |
2756 | Notice that the FILTER and SENTINEL args are never used directly by | |
2757 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2758 | the server process, but via the optional :log function, accepted (and |
2759 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2760 | |
365aee82 KS |
2761 | The original argument list, modified with the actual connection |
2762 | information, is available via the `process-contact' function. | |
365aee82 | 2763 | |
fa9d4315 | 2764 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
2765 | (nargs, args) |
2766 | int nargs; | |
2767 | Lisp_Object *args; | |
d0d6b7c5 JB |
2768 | { |
2769 | Lisp_Object proc; | |
e690ca94 KS |
2770 | Lisp_Object contact; |
2771 | struct Lisp_Process *p; | |
70dbdb36 | 2772 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2773 | struct addrinfo ai, *res, *lres; |
e1652a86 KS |
2774 | struct addrinfo hints; |
2775 | char *portstring, portbuf[128]; | |
70dbdb36 | 2776 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2777 | struct _emacs_addrinfo |
2778 | { | |
2779 | int ai_family; | |
2780 | int ai_socktype; | |
2781 | int ai_protocol; | |
2782 | int ai_addrlen; | |
2783 | struct sockaddr *ai_addr; | |
2784 | struct _emacs_addrinfo *ai_next; | |
2785 | } ai, *res, *lres; | |
418b48fd | 2786 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2787 | struct sockaddr_in address_in; |
2788 | #ifdef HAVE_LOCAL_SOCKETS | |
2789 | struct sockaddr_un address_un; | |
2790 | #endif | |
2791 | int port; | |
dd2a17ab KS |
2792 | int ret = 0; |
2793 | int xerrno = 0; | |
418b48fd | 2794 | int s = -1, outch, inch; |
e690ca94 | 2795 | struct gcpro gcpro1; |
aed13378 | 2796 | int count = SPECPDL_INDEX (); |
5684cd6e | 2797 | int count1; |
e690ca94 KS |
2798 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2799 | Lisp_Object tem; | |
2800 | Lisp_Object name, buffer, host, service, address; | |
2801 | Lisp_Object filter, sentinel; | |
2802 | int is_non_blocking_client = 0; | |
2ccf3102 | 2803 | int is_server = 0, backlog = 5; |
9057ff80 | 2804 | int socktype; |
e690ca94 KS |
2805 | int family = -1; |
2806 | ||
2807 | if (nargs == 0) | |
2808 | return Qnil; | |
dd2a17ab | 2809 | |
e690ca94 KS |
2810 | /* Save arguments for process-contact and clone-process. */ |
2811 | contact = Flist (nargs, args); | |
2812 | GCPRO1 (contact); | |
2813 | ||
bff3ed0a RS |
2814 | #ifdef WINDOWSNT |
2815 | /* Ensure socket support is loaded if available. */ | |
2816 | init_winsock (TRUE); | |
2817 | #endif | |
2818 | ||
9057ff80 KS |
2819 | /* :type TYPE (nil: stream, datagram */ |
2820 | tem = Fplist_get (contact, QCtype); | |
2821 | if (NILP (tem)) | |
2822 | socktype = SOCK_STREAM; | |
2823 | #ifdef DATAGRAM_SOCKETS | |
2824 | else if (EQ (tem, Qdatagram)) | |
2825 | socktype = SOCK_DGRAM; | |
e690ca94 | 2826 | #endif |
9057ff80 KS |
2827 | else |
2828 | error ("Unsupported connection type"); | |
e690ca94 KS |
2829 | |
2830 | /* :server BOOL */ | |
2831 | tem = Fplist_get (contact, QCserver); | |
2832 | if (!NILP (tem)) | |
2833 | { | |
75728599 JR |
2834 | /* Don't support network sockets when non-blocking mode is |
2835 | not available, since a blocked Emacs is not useful. */ | |
2836 | #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY)) | |
e690ca94 KS |
2837 | error ("Network servers not supported"); |
2838 | #else | |
2839 | is_server = 1; | |
2ccf3102 KS |
2840 | if (INTEGERP (tem)) |
2841 | backlog = XINT (tem); | |
e690ca94 KS |
2842 | #endif |
2843 | } | |
2844 | ||
2845 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2846 | QCaddress = is_server ? QClocal : QCremote; | |
2847 | ||
2848 | /* :wait BOOL */ | |
2849 | if (!is_server && socktype == SOCK_STREAM | |
2850 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) | |
2851 | { | |
2852 | #ifndef NON_BLOCKING_CONNECT | |
2853 | error ("Non-blocking connect not supported"); | |
2854 | #else | |
2855 | is_non_blocking_client = 1; | |
2856 | #endif | |
2857 | } | |
2858 | ||
2859 | name = Fplist_get (contact, QCname); | |
2860 | buffer = Fplist_get (contact, QCbuffer); | |
2861 | filter = Fplist_get (contact, QCfilter); | |
2862 | sentinel = Fplist_get (contact, QCsentinel); | |
2863 | ||
b7826503 | 2864 | CHECK_STRING (name); |
e690ca94 KS |
2865 | |
2866 | #ifdef TERM | |
2867 | /* Let's handle TERM before things get complicated ... */ | |
2868 | host = Fplist_get (contact, QChost); | |
b7826503 | 2869 | CHECK_STRING (host); |
177c0ea7 | 2870 | |
e690ca94 KS |
2871 | service = Fplist_get (contact, QCservice); |
2872 | if (INTEGERP (service)) | |
2873 | port = htons ((unsigned short) XINT (service)); | |
2874 | else | |
2875 | { | |
2876 | struct servent *svc_info; | |
2877 | CHECK_STRING (service); | |
d5db4077 | 2878 | svc_info = getservbyname (SDATA (service), "tcp"); |
e690ca94 | 2879 | if (svc_info == 0) |
d5db4077 | 2880 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2881 | port = svc_info->s_port; |
2882 | } | |
2883 | ||
2884 | s = connect_server (0); | |
2885 | if (s < 0) | |
2886 | report_file_error ("error creating socket", Fcons (name, Qnil)); | |
d5db4077 | 2887 | send_command (s, C_PORT, 0, "%s:%d", SDATA (host), ntohs (port)); |
e690ca94 KS |
2888 | send_command (s, C_DUMB, 1, 0); |
2889 | ||
2890 | #else /* not TERM */ | |
2891 | ||
2892 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ | |
2893 | ai.ai_socktype = socktype; | |
2894 | ai.ai_protocol = 0; | |
2895 | ai.ai_next = NULL; | |
2896 | res = &ai; | |
a319f7c1 | 2897 | |
e690ca94 KS |
2898 | /* :local ADDRESS or :remote ADDRESS */ |
2899 | address = Fplist_get (contact, QCaddress); | |
2900 | if (!NILP (address)) | |
a319f7c1 | 2901 | { |
e690ca94 KS |
2902 | host = service = Qnil; |
2903 | ||
2904 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2905 | error ("Malformed :address"); | |
2906 | ai.ai_family = family; | |
2907 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2908 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2909 | goto open_socket; | |
a319f7c1 | 2910 | } |
e690ca94 KS |
2911 | |
2912 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2913 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 2914 | if (NILP (tem)) |
a319f7c1 | 2915 | { |
e1652a86 KS |
2916 | #ifdef HAVE_GETADDRINFO |
2917 | family = AF_UNSPEC; | |
2918 | #else | |
2919 | family = AF_INET; | |
e690ca94 | 2920 | #endif |
a319f7c1 | 2921 | } |
e1652a86 KS |
2922 | #ifdef HAVE_LOCAL_SOCKETS |
2923 | else if (EQ (tem, Qlocal)) | |
2924 | family = AF_LOCAL; | |
2925 | #endif | |
2926 | #ifdef AF_INET6 | |
2927 | else if (EQ (tem, Qipv6)) | |
2928 | family = AF_INET6; | |
2929 | #endif | |
2930 | else if (EQ (tem, Qipv4)) | |
2931 | family = AF_INET; | |
2932 | else if (INTEGERP (tem)) | |
2933 | family = XINT (tem); | |
2934 | else | |
e690ca94 | 2935 | error ("Unknown address family"); |
e1652a86 | 2936 | |
e690ca94 KS |
2937 | ai.ai_family = family; |
2938 | ||
2939 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2940 | service = Fplist_get (contact, QCservice); | |
2941 | ||
2942 | #ifdef HAVE_LOCAL_SOCKETS | |
2943 | if (family == AF_LOCAL) | |
d0d6b7c5 | 2944 | { |
e690ca94 KS |
2945 | /* Host is not used. */ |
2946 | host = Qnil; | |
b7826503 | 2947 | CHECK_STRING (service); |
e690ca94 KS |
2948 | bzero (&address_un, sizeof address_un); |
2949 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 2950 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
2951 | ai.ai_addr = (struct sockaddr *) &address_un; |
2952 | ai.ai_addrlen = sizeof address_un; | |
2953 | goto open_socket; | |
d0d6b7c5 | 2954 | } |
e690ca94 | 2955 | #endif |
a319f7c1 | 2956 | |
e690ca94 KS |
2957 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
2958 | host = Fplist_get (contact, QChost); | |
2959 | if (!NILP (host)) | |
2960 | { | |
2961 | if (EQ (host, Qlocal)) | |
2962 | host = build_string ("localhost"); | |
2963 | CHECK_STRING (host); | |
2964 | } | |
d0d6b7c5 | 2965 | |
798b64bb KH |
2966 | /* Slow down polling to every ten seconds. |
2967 | Some kernels have a bug which causes retrying connect to fail | |
2968 | after a connect. Polling can interfere with gethostbyname too. */ | |
2969 | #ifdef POLL_FOR_INPUT | |
e690ca94 KS |
2970 | if (socktype == SOCK_STREAM) |
2971 | { | |
2972 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
2973 | bind_polling_period (10); | |
2974 | } | |
798b64bb KH |
2975 | #endif |
2976 | ||
a319f7c1 | 2977 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2978 | /* If we have a host, use getaddrinfo to resolve both host and service. |
2979 | Otherwise, use getservbyname to lookup the service. */ | |
2980 | if (!NILP (host)) | |
2981 | { | |
2982 | ||
2983 | /* SERVICE can either be a string or int. | |
2984 | Convert to a C string for later use by getaddrinfo. */ | |
2985 | if (EQ (service, Qt)) | |
2986 | portstring = "0"; | |
2987 | else if (INTEGERP (service)) | |
2988 | { | |
2989 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
2990 | portstring = portbuf; | |
2991 | } | |
2992 | else | |
2993 | { | |
2994 | CHECK_STRING (service); | |
d5db4077 | 2995 | portstring = SDATA (service); |
e690ca94 KS |
2996 | } |
2997 | ||
2998 | immediate_quit = 1; | |
2999 | QUIT; | |
3000 | memset (&hints, 0, sizeof (hints)); | |
3001 | hints.ai_flags = 0; | |
e1652a86 | 3002 | hints.ai_family = family; |
e690ca94 KS |
3003 | hints.ai_socktype = socktype; |
3004 | hints.ai_protocol = 0; | |
d5db4077 | 3005 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 3006 | if (ret) |
f6270f62 | 3007 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 3008 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 3009 | #else |
d5db4077 | 3010 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 3011 | #endif |
e690ca94 | 3012 | immediate_quit = 0; |
a319f7c1 | 3013 | |
e690ca94 KS |
3014 | goto open_socket; |
3015 | } | |
3016 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3017 | |
e690ca94 KS |
3018 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3019 | has been specified (e.g. for a local server process). */ | |
3020 | ||
3021 | if (EQ (service, Qt)) | |
3022 | port = 0; | |
3023 | else if (INTEGERP (service)) | |
3024 | port = htons ((unsigned short) XINT (service)); | |
3025 | else | |
616da37c | 3026 | { |
e690ca94 KS |
3027 | struct servent *svc_info; |
3028 | CHECK_STRING (service); | |
177c0ea7 | 3029 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
3030 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3031 | if (svc_info == 0) | |
d5db4077 | 3032 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3033 | port = svc_info->s_port; |
3034 | } | |
3035 | ||
3036 | bzero (&address_in, sizeof address_in); | |
3037 | address_in.sin_family = family; | |
3038 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3039 | address_in.sin_port = port; | |
3040 | ||
3041 | #ifndef HAVE_GETADDRINFO | |
3042 | if (!NILP (host)) | |
3043 | { | |
3044 | struct hostent *host_info_ptr; | |
3045 | ||
3046 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 3047 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3048 | immediate_quit = 1; |
3049 | QUIT; | |
d5db4077 | 3050 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3051 | immediate_quit = 0; |
177c0ea7 | 3052 | |
e690ca94 KS |
3053 | if (host_info_ptr) |
3054 | { | |
3055 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
3056 | host_info_ptr->h_length); | |
3057 | family = host_info_ptr->h_addrtype; | |
3058 | address_in.sin_family = family; | |
3059 | } | |
3060 | else | |
3061 | /* Attempt to interpret host as numeric inet address */ | |
3062 | { | |
3063 | IN_ADDR numeric_addr; | |
d5db4077 | 3064 | numeric_addr = inet_addr ((char *) SDATA (host)); |
e690ca94 | 3065 | if (NUMERIC_ADDR_ERROR) |
d5db4077 | 3066 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3067 | |
e690ca94 KS |
3068 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
3069 | sizeof (address_in.sin_addr)); | |
3070 | } | |
d0d6b7c5 | 3071 | |
e690ca94 | 3072 | } |
dd2a17ab | 3073 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3074 | |
e690ca94 KS |
3075 | ai.ai_family = family; |
3076 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3077 | ai.ai_addrlen = sizeof address_in; | |
3078 | ||
3079 | open_socket: | |
3080 | ||
3081 | /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR) | |
3082 | when connect is interrupted. So let's not let it get interrupted. | |
3083 | Note we do not turn off polling, because polling is only used | |
3084 | when not interrupt_input, and thus not normally used on the systems | |
3085 | which have this bug. On systems which use polling, there's no way | |
3086 | to quit if polling is turned off. */ | |
3087 | if (interrupt_input | |
3088 | && !is_server && socktype == SOCK_STREAM) | |
3089 | { | |
3090 | /* Comment from KFS: The original open-network-stream code | |
3091 | didn't unwind protect this, but it seems like the proper | |
3092 | thing to do. In any case, I don't see how it could harm to | |
3093 | do this -- and it makes cleanup (using unbind_to) easier. */ | |
3094 | record_unwind_protect (unwind_request_sigio, Qnil); | |
3095 | unrequest_sigio (); | |
3096 | } | |
3097 | ||
dd2a17ab | 3098 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3099 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3100 | s = -1; |
457a9bee | 3101 | |
dd2a17ab KS |
3102 | for (lres = res; lres; lres = lres->ai_next) |
3103 | { | |
2ccf3102 KS |
3104 | int optn, optbits; |
3105 | ||
4e9dd03b KS |
3106 | retry_connect: |
3107 | ||
dd2a17ab KS |
3108 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3109 | if (s < 0) | |
3110 | { | |
3111 | xerrno = errno; | |
3112 | continue; | |
3113 | } | |
0f2ee0c1 | 3114 | |
e690ca94 KS |
3115 | #ifdef DATAGRAM_SOCKETS |
3116 | if (!is_server && socktype == SOCK_DGRAM) | |
3117 | break; | |
3118 | #endif /* DATAGRAM_SOCKETS */ | |
3119 | ||
dd2a17ab | 3120 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3121 | if (is_non_blocking_client) |
dd2a17ab KS |
3122 | { |
3123 | #ifdef O_NONBLOCK | |
3124 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3125 | #else | |
3126 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3127 | #endif | |
3128 | if (ret < 0) | |
3129 | { | |
3130 | xerrno = errno; | |
3131 | emacs_close (s); | |
3132 | s = -1; | |
3133 | continue; | |
3134 | } | |
3135 | } | |
3136 | #endif | |
177c0ea7 | 3137 | |
dd2a17ab | 3138 | /* Make us close S if quit. */ |
dd2a17ab KS |
3139 | record_unwind_protect (close_file_unwind, make_number (s)); |
3140 | ||
2ccf3102 KS |
3141 | /* Parse network options in the arg list. |
3142 | We simply ignore anything which isn't a known option (including other keywords). | |
3143 | An error is signalled if setting a known option fails. */ | |
3144 | for (optn = optbits = 0; optn < nargs-1; optn += 2) | |
3145 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3146 | ||
e690ca94 KS |
3147 | if (is_server) |
3148 | { | |
3149 | /* Configure as a server socket. */ | |
2ccf3102 KS |
3150 | |
3151 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3152 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3153 | #ifdef HAVE_LOCAL_SOCKETS |
3154 | if (family != AF_LOCAL) | |
3155 | #endif | |
2ccf3102 KS |
3156 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3157 | { | |
3158 | int optval = 1; | |
3159 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
7c402969 | 3160 | report_file_error ("Cannot set reuse option on server socket", Qnil); |
2ccf3102 | 3161 | } |
177c0ea7 | 3162 | |
e690ca94 KS |
3163 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3164 | report_file_error ("Cannot bind server socket", Qnil); | |
3165 | ||
3166 | #ifdef HAVE_GETSOCKNAME | |
3167 | if (EQ (service, Qt)) | |
3168 | { | |
3169 | struct sockaddr_in sa1; | |
3170 | int len1 = sizeof (sa1); | |
3171 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3172 | { | |
3173 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3174 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3175 | contact = Fplist_put (contact, QCservice, service); |
3176 | } | |
3177 | } | |
3178 | #endif | |
3179 | ||
2ccf3102 | 3180 | if (socktype == SOCK_STREAM && listen (s, backlog)) |
e690ca94 KS |
3181 | report_file_error ("Cannot listen on server socket", Qnil); |
3182 | ||
3183 | break; | |
3184 | } | |
3185 | ||
dd2a17ab KS |
3186 | immediate_quit = 1; |
3187 | QUIT; | |
3188 | ||
3189 | /* This turns off all alarm-based interrupts; the | |
3190 | bind_polling_period call above doesn't always turn all the | |
3191 | short-interval ones off, especially if interrupt_input is | |
3192 | set. | |
3193 | ||
3194 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3195 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3196 | |
3197 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3198 | ||
f40f9848 | 3199 | turn_on_atimers (0); |
dd2a17ab KS |
3200 | |
3201 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3202 | xerrno = errno; | |
3203 | ||
f40f9848 | 3204 | turn_on_atimers (1); |
dd2a17ab KS |
3205 | |
3206 | if (ret == 0 || xerrno == EISCONN) | |
3207 | { | |
dd2a17ab KS |
3208 | /* The unwind-protect will be discarded afterwards. |
3209 | Likewise for immediate_quit. */ | |
3210 | break; | |
3211 | } | |
3212 | ||
3213 | #ifdef NON_BLOCKING_CONNECT | |
3214 | #ifdef EINPROGRESS | |
e690ca94 | 3215 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3216 | break; |
3217 | #else | |
3218 | #ifdef EWOULDBLOCK | |
e690ca94 | 3219 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3220 | break; |
3221 | #endif | |
3222 | #endif | |
3223 | #endif | |
e333e864 | 3224 | |
0f2ee0c1 RS |
3225 | immediate_quit = 0; |
3226 | ||
dd2a17ab | 3227 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3228 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3229 | emacs_close (s); |
dd2a17ab | 3230 | s = -1; |
4e9dd03b KS |
3231 | |
3232 | if (xerrno == EINTR) | |
3233 | goto retry_connect; | |
dd2a17ab | 3234 | } |
457a9bee | 3235 | |
e690ca94 KS |
3236 | if (s >= 0) |
3237 | { | |
3238 | #ifdef DATAGRAM_SOCKETS | |
3239 | if (socktype == SOCK_DGRAM) | |
3240 | { | |
3241 | if (datagram_address[s].sa) | |
3242 | abort (); | |
3243 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3244 | datagram_address[s].len = lres->ai_addrlen; | |
3245 | if (is_server) | |
3246 | { | |
3247 | Lisp_Object remote; | |
3248 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3249 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3250 | { | |
3251 | int rfamily, rlen; | |
3252 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3253 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3254 | conv_lisp_to_sockaddr (rfamily, remote, | |
3255 | datagram_address[s].sa, rlen); | |
3256 | } | |
3257 | } | |
3258 | else | |
3259 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3260 | } | |
3261 | #endif | |
177c0ea7 | 3262 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3263 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3264 | #ifdef HAVE_GETSOCKNAME |
3265 | if (!is_server) | |
3266 | { | |
3267 | struct sockaddr_in sa1; | |
3268 | int len1 = sizeof (sa1); | |
3269 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3270 | contact = Fplist_put (contact, QClocal, | |
3271 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3272 | } | |
3273 | #endif | |
e690ca94 KS |
3274 | } |
3275 | ||
dd2a17ab | 3276 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3277 | if (res != &ai) |
3278 | freeaddrinfo (res); | |
dd2a17ab KS |
3279 | #endif |
3280 | ||
e690ca94 KS |
3281 | immediate_quit = 0; |
3282 | ||
3283 | /* Discard the unwind protect for closing S, if any. */ | |
3284 | specpdl_ptr = specpdl + count1; | |
3285 | ||
3286 | /* Unwind bind_polling_period and request_sigio. */ | |
3287 | unbind_to (count, Qnil); | |
3288 | ||
dd2a17ab KS |
3289 | if (s < 0) |
3290 | { | |
dd2a17ab KS |
3291 | /* If non-blocking got this far - and failed - assume non-blocking is |
3292 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3293 | the normal blocking calls to open-network-stream handles this error |
3294 | better. */ | |
3295 | if (is_non_blocking_client) | |
dd2a17ab | 3296 | return Qnil; |
dd2a17ab | 3297 | |
d0d6b7c5 | 3298 | errno = xerrno; |
e690ca94 KS |
3299 | if (is_server) |
3300 | report_file_error ("make server process failed", contact); | |
3301 | else | |
3302 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3303 | } |
44ade2e9 | 3304 | |
e690ca94 | 3305 | #endif /* not TERM */ |
d0d6b7c5 JB |
3306 | |
3307 | inch = s; | |
59f23005 | 3308 | outch = s; |
d0d6b7c5 JB |
3309 | |
3310 | if (!NILP (buffer)) | |
3311 | buffer = Fget_buffer_create (buffer); | |
3312 | proc = make_process (name); | |
3313 | ||
3314 | chan_process[inch] = proc; | |
3315 | ||
3316 | #ifdef O_NONBLOCK | |
3317 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3318 | #else | |
3319 | #ifdef O_NDELAY | |
3320 | fcntl (inch, F_SETFL, O_NDELAY); | |
3321 | #endif | |
3322 | #endif | |
3323 | ||
e690ca94 KS |
3324 | p = XPROCESS (proc); |
3325 | ||
3326 | p->childp = contact; | |
faa7db08 | 3327 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
177c0ea7 | 3328 | |
e690ca94 KS |
3329 | p->buffer = buffer; |
3330 | p->sentinel = sentinel; | |
3331 | p->filter = filter; | |
03f04413 KH |
3332 | p->filter_multibyte = buffer_defaults.enable_multibyte_characters; |
3333 | /* Override the above only if :filter-multibyte is specified. */ | |
3334 | if (! NILP (Fplist_member (contact, QCfilter_multibyte))) | |
3335 | p->filter_multibyte = Fplist_get (contact, QCfilter_multibyte); | |
e690ca94 KS |
3336 | p->log = Fplist_get (contact, QClog); |
3337 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
3338 | p->kill_without_query = Qt; | |
3339 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) | |
3340 | p->command = Qt; | |
3341 | p->pid = Qnil; | |
3342 | XSETINT (p->infd, inch); | |
3343 | XSETINT (p->outfd, outch); | |
3344 | if (is_server && socktype == SOCK_STREAM) | |
3345 | p->status = Qlisten; | |
dd2a17ab KS |
3346 | |
3347 | #ifdef NON_BLOCKING_CONNECT | |
e690ca94 | 3348 | if (is_non_blocking_client) |
dd2a17ab KS |
3349 | { |
3350 | /* We may get here if connect did succeed immediately. However, | |
3351 | in that case, we still need to signal this like a non-blocking | |
3352 | connection. */ | |
e690ca94 | 3353 | p->status = Qconnect; |
dd2a17ab KS |
3354 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3355 | { | |
3356 | FD_SET (inch, &connect_wait_mask); | |
3357 | num_pending_connects++; | |
3358 | } | |
3359 | } | |
3360 | else | |
3361 | #endif | |
e690ca94 KS |
3362 | /* A server may have a client filter setting of Qt, but it must |
3363 | still listen for incoming connects unless it is stopped. */ | |
3364 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3365 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3366 | { |
3367 | FD_SET (inch, &input_wait_mask); | |
3368 | FD_SET (inch, &non_keyboard_wait_mask); | |
3369 | } | |
3370 | ||
7d0e672e RS |
3371 | if (inch > max_process_desc) |
3372 | max_process_desc = inch; | |
d0d6b7c5 | 3373 | |
e690ca94 KS |
3374 | tem = Fplist_member (contact, QCcoding); |
3375 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3376 | tem = Qnil; /* No error message (too late!). */ | |
3377 | ||
67918941 RS |
3378 | { |
3379 | /* Setup coding systems for communicating with the network stream. */ | |
3380 | struct gcpro gcpro1; | |
3381 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3382 | Lisp_Object coding_systems = Qt; | |
3383 | Lisp_Object args[5], val; | |
3384 | ||
e690ca94 | 3385 | if (!NILP (tem)) |
2ccf3102 KS |
3386 | { |
3387 | val = XCAR (XCDR (tem)); | |
3388 | if (CONSP (val)) | |
3389 | val = XCAR (val); | |
3390 | } | |
e690ca94 | 3391 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3392 | val = Vcoding_system_for_read; |
41d03b9a GM |
3393 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3394 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3395 | /* We dare not decode end-of-line format by setting VAL to |
3396 | Qraw_text, because the existing Emacs Lisp libraries | |
3397 | assume that they receive bare code including a sequene of | |
3398 | CR LF. */ | |
3399 | val = Qnil; | |
3400 | else | |
3401 | { | |
991234f0 KS |
3402 | if (NILP (host) || NILP (service)) |
3403 | coding_systems = Qnil; | |
3404 | else | |
3405 | { | |
3406 | args[0] = Qopen_network_stream, args[1] = name, | |
3407 | args[2] = buffer, args[3] = host, args[4] = service; | |
3408 | GCPRO1 (proc); | |
3409 | coding_systems = Ffind_operation_coding_system (5, args); | |
3410 | UNGCPRO; | |
3411 | } | |
67918941 | 3412 | if (CONSP (coding_systems)) |
70949dac | 3413 | val = XCAR (coding_systems); |
67918941 | 3414 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3415 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3416 | else |
3417 | val = Qnil; | |
3418 | } | |
e690ca94 | 3419 | p->decode_coding_system = val; |
0fa1789e | 3420 | |
e690ca94 | 3421 | if (!NILP (tem)) |
2ccf3102 KS |
3422 | { |
3423 | val = XCAR (XCDR (tem)); | |
3424 | if (CONSP (val)) | |
3425 | val = XCDR (val); | |
3426 | } | |
e690ca94 | 3427 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3428 | val = Vcoding_system_for_write; |
3429 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3430 | val = Qnil; | |
3431 | else | |
3432 | { | |
3433 | if (EQ (coding_systems, Qt)) | |
3434 | { | |
991234f0 KS |
3435 | if (NILP (host) || NILP (service)) |
3436 | coding_systems = Qnil; | |
3437 | else | |
3438 | { | |
3439 | args[0] = Qopen_network_stream, args[1] = name, | |
3440 | args[2] = buffer, args[3] = host, args[4] = service; | |
3441 | GCPRO1 (proc); | |
3442 | coding_systems = Ffind_operation_coding_system (5, args); | |
3443 | UNGCPRO; | |
3444 | } | |
67918941 RS |
3445 | } |
3446 | if (CONSP (coding_systems)) | |
70949dac | 3447 | val = XCDR (coding_systems); |
67918941 | 3448 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3449 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3450 | else |
3451 | val = Qnil; | |
3452 | } | |
e690ca94 | 3453 | p->encode_coding_system = val; |
67918941 | 3454 | } |
03f04413 | 3455 | setup_process_coding_systems (proc); |
0fa1789e | 3456 | |
e690ca94 KS |
3457 | p->decoding_buf = make_uninit_string (0); |
3458 | p->decoding_carryover = make_number (0); | |
3459 | p->encoding_buf = make_uninit_string (0); | |
3460 | p->encoding_carryover = make_number (0); | |
0fa1789e | 3461 | |
e690ca94 KS |
3462 | p->inherit_coding_system_flag |
3463 | = (!NILP (tem) || NILP (buffer) || !inherit_process_coding_system | |
aa91317a | 3464 | ? Qnil : Qt); |
52a1b894 | 3465 | |
d0d6b7c5 JB |
3466 | UNGCPRO; |
3467 | return proc; | |
3468 | } | |
3469 | #endif /* HAVE_SOCKETS */ | |
3470 | ||
161933c7 | 3471 | \f |
b8c7fd71 | 3472 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
161933c7 KS |
3473 | |
3474 | #ifdef SIOCGIFCONF | |
3475 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3476 | doc: /* Return an alist of all network interfaces and their network address. | |
3477 | Each element is a cons, the car of which is a string containing the | |
3478 | interface name, and the cdr is the network address in internal | |
e1283999 | 3479 | format; see the description of ADDRESS in `make-network-process'. */) |
161933c7 KS |
3480 | () |
3481 | { | |
3482 | struct ifconf ifconf; | |
3483 | struct ifreq *ifreqs = NULL; | |
3484 | int ifaces = 0; | |
3485 | int buf_size, s; | |
3486 | Lisp_Object res; | |
3487 | ||
3488 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3489 | if (s < 0) | |
3490 | return Qnil; | |
3491 | ||
3492 | again: | |
3493 | ifaces += 25; | |
3494 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3495 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3496 | if (!ifreqs) | |
3497 | { | |
3498 | close (s); | |
3499 | return Qnil; | |
3500 | } | |
3501 | ||
3502 | ifconf.ifc_len = buf_size; | |
3503 | ifconf.ifc_req = ifreqs; | |
3504 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3505 | { | |
3506 | close (s); | |
3507 | return Qnil; | |
3508 | } | |
3509 | ||
3510 | if (ifconf.ifc_len == buf_size) | |
3511 | goto again; | |
3512 | ||
3513 | close (s); | |
3514 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3515 | ||
3516 | res = Qnil; | |
3517 | while (--ifaces >= 0) | |
3518 | { | |
3519 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3520 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3521 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3522 | continue; | |
3523 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3524 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3525 | res = Fcons (Fcons (build_string (namebuf), | |
3526 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3527 | sizeof (struct sockaddr))), | |
3528 | res); | |
3529 | } | |
3530 | ||
3531 | return res; | |
3532 | } | |
b8c7fd71 | 3533 | #endif /* SIOCGIFCONF */ |
161933c7 KS |
3534 | |
3535 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3536 | ||
3537 | struct ifflag_def { | |
3538 | int flag_bit; | |
3539 | char *flag_sym; | |
3540 | }; | |
3541 | ||
3542 | static struct ifflag_def ifflag_table[] = { | |
3543 | #ifdef IFF_UP | |
3544 | { IFF_UP, "up" }, | |
3545 | #endif | |
3546 | #ifdef IFF_BROADCAST | |
3547 | { IFF_BROADCAST, "broadcast" }, | |
3548 | #endif | |
3549 | #ifdef IFF_DEBUG | |
3550 | { IFF_DEBUG, "debug" }, | |
3551 | #endif | |
3552 | #ifdef IFF_LOOPBACK | |
3553 | { IFF_LOOPBACK, "loopback" }, | |
3554 | #endif | |
3555 | #ifdef IFF_POINTOPOINT | |
3556 | { IFF_POINTOPOINT, "pointopoint" }, | |
3557 | #endif | |
3558 | #ifdef IFF_RUNNING | |
3559 | { IFF_RUNNING, "running" }, | |
3560 | #endif | |
3561 | #ifdef IFF_NOARP | |
3562 | { IFF_NOARP, "noarp" }, | |
3563 | #endif | |
3564 | #ifdef IFF_PROMISC | |
3565 | { IFF_PROMISC, "promisc" }, | |
3566 | #endif | |
3567 | #ifdef IFF_NOTRAILERS | |
3568 | { IFF_NOTRAILERS, "notrailers" }, | |
3569 | #endif | |
3570 | #ifdef IFF_ALLMULTI | |
3571 | { IFF_ALLMULTI, "allmulti" }, | |
3572 | #endif | |
3573 | #ifdef IFF_MASTER | |
3574 | { IFF_MASTER, "master" }, | |
3575 | #endif | |
3576 | #ifdef IFF_SLAVE | |
3577 | { IFF_SLAVE, "slave" }, | |
3578 | #endif | |
3579 | #ifdef IFF_MULTICAST | |
3580 | { IFF_MULTICAST, "multicast" }, | |
3581 | #endif | |
3582 | #ifdef IFF_PORTSEL | |
3583 | { IFF_PORTSEL, "portsel" }, | |
3584 | #endif | |
3585 | #ifdef IFF_AUTOMEDIA | |
3586 | { IFF_AUTOMEDIA, "automedia" }, | |
3587 | #endif | |
3588 | #ifdef IFF_DYNAMIC | |
3589 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 KS |
3590 | #endif |
3591 | #ifdef IFF_OACTIV | |
3592 | { IFF_OACTIV, "oactiv" }, /* OpenBSD: transmission in progress */ | |
3593 | #endif | |
3594 | #ifdef IFF_SIMPLEX | |
3595 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3596 | #endif | |
3597 | #ifdef IFF_LINK0 | |
3598 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3599 | #endif | |
3600 | #ifdef IFF_LINK1 | |
3601 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3602 | #endif | |
3603 | #ifdef IFF_LINK2 | |
3604 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
161933c7 KS |
3605 | #endif |
3606 | { 0, 0 } | |
3607 | }; | |
3608 | ||
2ccf3102 | 3609 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, |
161933c7 KS |
3610 | doc: /* Return information about network interface named IFNAME. |
3611 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3612 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3613 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3614 | FLAGS is the current flags of the interface. */) | |
3615 | (ifname) | |
3616 | Lisp_Object ifname; | |
3617 | { | |
3618 | struct ifreq rq; | |
3619 | Lisp_Object res = Qnil; | |
3620 | Lisp_Object elt; | |
3621 | int s; | |
3622 | int any = 0; | |
3623 | ||
3624 | CHECK_STRING (ifname); | |
3625 | ||
3626 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
3627 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
3628 | ||
3629 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3630 | if (s < 0) | |
3631 | return Qnil; | |
3632 | ||
3633 | elt = Qnil; | |
559c53b3 | 3634 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) |
161933c7 KS |
3635 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3636 | { | |
3637 | int flags = rq.ifr_flags; | |
3638 | struct ifflag_def *fp; | |
3639 | int fnum; | |
3640 | ||
3641 | any++; | |
82a80058 | 3642 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
161933c7 KS |
3643 | { |
3644 | if (flags & fp->flag_bit) | |
3645 | { | |
3646 | elt = Fcons (intern (fp->flag_sym), elt); | |
3647 | flags -= fp->flag_bit; | |
3648 | } | |
3649 | } | |
3650 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3651 | { | |
3652 | if (flags & (1 << fnum)) | |
3653 | { | |
3654 | elt = Fcons (make_number (fnum), elt); | |
3655 | } | |
3656 | } | |
3657 | } | |
3658 | #endif | |
3659 | res = Fcons (elt, res); | |
3660 | ||
3661 | elt = Qnil; | |
559c53b3 | 3662 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) |
161933c7 KS |
3663 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3664 | { | |
b8c7fd71 | 3665 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); |
161933c7 KS |
3666 | register struct Lisp_Vector *p = XVECTOR (hwaddr); |
3667 | int n; | |
3668 | ||
3669 | any++; | |
3670 | for (n = 0; n < 6; n++) | |
3671 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
e1283999 | 3672 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); |
161933c7 KS |
3673 | } |
3674 | #endif | |
3675 | res = Fcons (elt, res); | |
3676 | ||
3677 | elt = Qnil; | |
b8c7fd71 | 3678 | #if defined(SIOCGIFNETMASK) && defined(ifr_netmask) |
161933c7 KS |
3679 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3680 | { | |
3681 | any++; | |
3682 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); | |
3683 | } | |
3684 | #endif | |
3685 | res = Fcons (elt, res); | |
3686 | ||
3687 | elt = Qnil; | |
559c53b3 | 3688 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
161933c7 KS |
3689 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3690 | { | |
3691 | any++; | |
3692 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3693 | } | |
3694 | #endif | |
3695 | res = Fcons (elt, res); | |
3696 | ||
3697 | elt = Qnil; | |
559c53b3 | 3698 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) |
161933c7 KS |
3699 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3700 | { | |
3701 | any++; | |
3702 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3703 | } | |
3704 | #endif | |
3705 | res = Fcons (elt, res); | |
3706 | ||
3707 | close (s); | |
3708 | ||
3709 | return any ? res : Qnil; | |
3710 | } | |
3711 | #endif | |
3712 | #endif /* HAVE_SOCKETS */ | |
3713 | ||
04391069 RS |
3714 | /* Turn off input and output for process PROC. */ |
3715 | ||
6b53bb85 | 3716 | void |
d0d6b7c5 JB |
3717 | deactivate_process (proc) |
3718 | Lisp_Object proc; | |
3719 | { | |
3720 | register int inchannel, outchannel; | |
3721 | register struct Lisp_Process *p = XPROCESS (proc); | |
3722 | ||
a9f2c884 RS |
3723 | inchannel = XINT (p->infd); |
3724 | outchannel = XINT (p->outfd); | |
d0d6b7c5 | 3725 | |
2d942bfa KS |
3726 | #ifdef ADAPTIVE_READ_BUFFERING |
3727 | if (XINT (p->read_output_delay) > 0) | |
3728 | { | |
3729 | if (--process_output_delay_count < 0) | |
3730 | process_output_delay_count = 0; | |
3731 | XSETINT (p->read_output_delay, 0); | |
3732 | p->read_output_skip = Qnil; | |
3733 | } | |
3734 | #endif | |
f3d9532b | 3735 | |
a9f2c884 | 3736 | if (inchannel >= 0) |
d0d6b7c5 JB |
3737 | { |
3738 | /* Beware SIGCHLD hereabouts. */ | |
3739 | flush_pending_output (inchannel); | |
3740 | #ifdef VMS | |
3741 | { | |
3742 | VMS_PROC_STUFF *get_vms_process_pointer (), *vs; | |
3743 | sys$dassgn (outchannel); | |
c6c6865d | 3744 | vs = get_vms_process_pointer (p->pid); |
d0d6b7c5 JB |
3745 | if (vs) |
3746 | give_back_vms_process_stuff (vs); | |
3747 | } | |
3748 | #else | |
68c45bf0 | 3749 | emacs_close (inchannel); |
a9f2c884 | 3750 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3751 | emacs_close (outchannel); |
d0d6b7c5 JB |
3752 | #endif |
3753 | ||
1d056e64 KH |
3754 | XSETINT (p->infd, -1); |
3755 | XSETINT (p->outfd, -1); | |
e690ca94 KS |
3756 | #ifdef DATAGRAM_SOCKETS |
3757 | if (DATAGRAM_CHAN_P (inchannel)) | |
3758 | { | |
3759 | xfree (datagram_address[inchannel].sa); | |
3760 | datagram_address[inchannel].sa = 0; | |
3761 | datagram_address[inchannel].len = 0; | |
3762 | } | |
3763 | #endif | |
d0d6b7c5 JB |
3764 | chan_process[inchannel] = Qnil; |
3765 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3766 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3767 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3768 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3769 | { | |
3770 | FD_CLR (inchannel, &connect_wait_mask); | |
3771 | if (--num_pending_connects < 0) | |
3772 | abort (); | |
3773 | } | |
bad49fc7 | 3774 | #endif |
7d0e672e RS |
3775 | if (inchannel == max_process_desc) |
3776 | { | |
3777 | int i; | |
3778 | /* We just closed the highest-numbered process input descriptor, | |
3779 | so recompute the highest-numbered one now. */ | |
3780 | max_process_desc = 0; | |
3781 | for (i = 0; i < MAXDESC; i++) | |
3782 | if (!NILP (chan_process[i])) | |
3783 | max_process_desc = i; | |
3784 | } | |
d0d6b7c5 JB |
3785 | } |
3786 | } | |
3787 | ||
3788 | /* Close all descriptors currently in use for communication | |
3789 | with subprocess. This is used in a newly-forked subprocess | |
3790 | to get rid of irrelevant descriptors. */ | |
3791 | ||
6b53bb85 | 3792 | void |
d0d6b7c5 JB |
3793 | close_process_descs () |
3794 | { | |
e98d950b | 3795 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
3796 | int i; |
3797 | for (i = 0; i < MAXDESC; i++) | |
3798 | { | |
3799 | Lisp_Object process; | |
3800 | process = chan_process[i]; | |
3801 | if (!NILP (process)) | |
3802 | { | |
a9f2c884 RS |
3803 | int in = XINT (XPROCESS (process)->infd); |
3804 | int out = XINT (XPROCESS (process)->outfd); | |
3805 | if (in >= 0) | |
68c45bf0 | 3806 | emacs_close (in); |
a9f2c884 | 3807 | if (out >= 0 && in != out) |
68c45bf0 | 3808 | emacs_close (out); |
d0d6b7c5 JB |
3809 | } |
3810 | } | |
e98d950b | 3811 | #endif |
d0d6b7c5 JB |
3812 | } |
3813 | \f | |
3814 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3815 | 0, 4, 0, |
fdb82f93 PJ |
3816 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3817 | It is read into the process' buffers or given to their filter functions. | |
3818 | Non-nil arg PROCESS means do not return until some output has been received | |
3819 | from PROCESS. | |
3820 | Non-nil second arg TIMEOUT and third arg TIMEOUT-MSECS are number of | |
3821 | seconds and microseconds to wait; return after that much time whether | |
3822 | or not there is input. | |
107ed38d KS |
3823 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3824 | from PROCESS, suspending reading output from other processes. | |
3825 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
fdb82f93 | 3826 | Return non-nil iff we received any output before the timeout expired. */) |
107ed38d KS |
3827 | (process, timeout, timeout_msecs, just_this_one) |
3828 | register Lisp_Object process, timeout, timeout_msecs, just_this_one; | |
d0d6b7c5 JB |
3829 | { |
3830 | int seconds; | |
3831 | int useconds; | |
3832 | ||
0748d150 | 3833 | if (! NILP (process)) |
b7826503 | 3834 | CHECK_PROCESS (process); |
107ed38d KS |
3835 | else |
3836 | just_this_one = Qnil; | |
0748d150 | 3837 | |
d0d6b7c5 JB |
3838 | if (! NILP (timeout_msecs)) |
3839 | { | |
b7826503 | 3840 | CHECK_NUMBER (timeout_msecs); |
d0d6b7c5 | 3841 | useconds = XINT (timeout_msecs); |
bcd69aea | 3842 | if (!INTEGERP (timeout)) |
1d056e64 | 3843 | XSETINT (timeout, 0); |
d0d6b7c5 JB |
3844 | |
3845 | { | |
3846 | int carry = useconds / 1000000; | |
3847 | ||
3848 | XSETINT (timeout, XINT (timeout) + carry); | |
3849 | useconds -= carry * 1000000; | |
3850 | ||
3851 | /* I think this clause is necessary because C doesn't | |
3852 | guarantee a particular rounding direction for negative | |
3853 | integers. */ | |
3854 | if (useconds < 0) | |
3855 | { | |
3856 | XSETINT (timeout, XINT (timeout) - 1); | |
3857 | useconds += 1000000; | |
3858 | } | |
3859 | } | |
3860 | } | |
de946e5a RS |
3861 | else |
3862 | useconds = 0; | |
d0d6b7c5 JB |
3863 | |
3864 | if (! NILP (timeout)) | |
3865 | { | |
b7826503 | 3866 | CHECK_NUMBER (timeout); |
d0d6b7c5 | 3867 | seconds = XINT (timeout); |
ada9a4fd | 3868 | if (seconds < 0 || (seconds == 0 && useconds == 0)) |
d0d6b7c5 JB |
3869 | seconds = -1; |
3870 | } | |
3871 | else | |
26d7389d | 3872 | seconds = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
3873 | |
3874 | return | |
214d6069 KS |
3875 | (wait_reading_process_output (seconds, useconds, 0, 0, |
3876 | Qnil, | |
3877 | !NILP (process) ? XPROCESS (process) : NULL, | |
3878 | NILP (just_this_one) ? 0 : | |
3879 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3880 | ? Qt : Qnil); |
3881 | } | |
3882 | ||
e690ca94 KS |
3883 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3884 | ||
3885 | static int connect_counter = 0; | |
3886 | ||
3887 | static void | |
3888 | server_accept_connection (server, channel) | |
3889 | Lisp_Object server; | |
3890 | int channel; | |
3891 | { | |
3892 | Lisp_Object proc, caller, name, buffer; | |
3893 | Lisp_Object contact, host, service; | |
3894 | struct Lisp_Process *ps= XPROCESS (server); | |
3895 | struct Lisp_Process *p; | |
3896 | int s; | |
3897 | union u_sockaddr { | |
3898 | struct sockaddr sa; | |
3899 | struct sockaddr_in in; | |
e1652a86 KS |
3900 | #ifdef AF_INET6 |
3901 | struct sockaddr_in6 in6; | |
3902 | #endif | |
e690ca94 KS |
3903 | #ifdef HAVE_LOCAL_SOCKETS |
3904 | struct sockaddr_un un; | |
3905 | #endif | |
3906 | } saddr; | |
3907 | int len = sizeof saddr; | |
3908 | ||
3909 | s = accept (channel, &saddr.sa, &len); | |
3910 | ||
3911 | if (s < 0) | |
3912 | { | |
3913 | int code = errno; | |
3914 | ||
3915 | if (code == EAGAIN) | |
3916 | return; | |
3917 | #ifdef EWOULDBLOCK | |
3918 | if (code == EWOULDBLOCK) | |
3919 | return; | |
3920 | #endif | |
3921 | ||
3922 | if (!NILP (ps->log)) | |
3923 | call3 (ps->log, server, Qnil, | |
3924 | concat3 (build_string ("accept failed with code"), | |
3925 | Fnumber_to_string (make_number (code)), | |
3926 | build_string ("\n"))); | |
3927 | return; | |
3928 | } | |
3929 | ||
3930 | connect_counter++; | |
3931 | ||
3932 | /* Setup a new process to handle the connection. */ | |
3933 | ||
3934 | /* Generate a unique identification of the caller, and build contact | |
3935 | information for this process. */ | |
3936 | host = Qt; | |
3937 | service = Qnil; | |
3938 | switch (saddr.sa.sa_family) | |
3939 | { | |
3940 | case AF_INET: | |
3941 | { | |
3942 | Lisp_Object args[5]; | |
3943 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
3944 | args[0] = build_string ("%d.%d.%d.%d"); | |
3945 | args[1] = make_number (*ip++); | |
3946 | args[2] = make_number (*ip++); | |
3947 | args[3] = make_number (*ip++); | |
3948 | args[4] = make_number (*ip++); | |
3949 | host = Fformat (5, args); | |
3950 | service = make_number (ntohs (saddr.in.sin_port)); | |
3951 | ||
3952 | args[0] = build_string (" <%s:%d>"); | |
3953 | args[1] = host; | |
3954 | args[2] = service; | |
3955 | caller = Fformat (3, args); | |
3956 | } | |
3957 | break; | |
3958 | ||
e1652a86 KS |
3959 | #ifdef AF_INET6 |
3960 | case AF_INET6: | |
3961 | { | |
3962 | Lisp_Object args[9]; | |
3963 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
3964 | int i; | |
3965 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
3966 | for (i = 0; i < 8; i++) | |
3967 | args[i+1] = make_number (ntohs(ip6[i])); | |
3968 | host = Fformat (9, args); | |
3969 | service = make_number (ntohs (saddr.in.sin_port)); | |
3970 | ||
3971 | args[0] = build_string (" <[%s]:%d>"); | |
3972 | args[1] = host; | |
3973 | args[2] = service; | |
3974 | caller = Fformat (3, args); | |
3975 | } | |
3976 | break; | |
3977 | #endif | |
3978 | ||
e690ca94 KS |
3979 | #ifdef HAVE_LOCAL_SOCKETS |
3980 | case AF_LOCAL: | |
3981 | #endif | |
3982 | default: | |
3983 | caller = Fnumber_to_string (make_number (connect_counter)); | |
3984 | caller = concat3 (build_string (" <*"), caller, build_string ("*>")); | |
3985 | break; | |
3986 | } | |
3987 | ||
3988 | /* Create a new buffer name for this process if it doesn't have a | |
3989 | filter. The new buffer name is based on the buffer name or | |
3990 | process name of the server process concatenated with the caller | |
3991 | identification. */ | |
3992 | ||
3993 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
3994 | buffer = Qnil; | |
3995 | else | |
3996 | { | |
3997 | buffer = ps->buffer; | |
3998 | if (!NILP (buffer)) | |
3999 | buffer = Fbuffer_name (buffer); | |
4000 | else | |
4001 | buffer = ps->name; | |
4002 | if (!NILP (buffer)) | |
4003 | { | |
4004 | buffer = concat2 (buffer, caller); | |
4005 | buffer = Fget_buffer_create (buffer); | |
4006 | } | |
4007 | } | |
4008 | ||
4009 | /* Generate a unique name for the new server process. Combine the | |
4010 | server process name with the caller identification. */ | |
4011 | ||
4012 | name = concat2 (ps->name, caller); | |
4013 | proc = make_process (name); | |
4014 | ||
4015 | chan_process[s] = proc; | |
4016 | ||
4017 | #ifdef O_NONBLOCK | |
4018 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4019 | #else | |
4020 | #ifdef O_NDELAY | |
4021 | fcntl (s, F_SETFL, O_NDELAY); | |
4022 | #endif | |
4023 | #endif | |
4024 | ||
4025 | p = XPROCESS (proc); | |
4026 | ||
4027 | /* Build new contact information for this setup. */ | |
4028 | contact = Fcopy_sequence (ps->childp); | |
4029 | contact = Fplist_put (contact, QCserver, Qnil); | |
4030 | contact = Fplist_put (contact, QChost, host); | |
4031 | if (!NILP (service)) | |
4032 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4033 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4034 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4035 | #ifdef HAVE_GETSOCKNAME | |
4036 | len = sizeof saddr; | |
2185db04 | 4037 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4038 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4039 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4040 | #endif | |
4041 | ||
4042 | p->childp = contact; | |
faa7db08 | 4043 | p->plist = Fcopy_sequence (ps->plist); |
ac4a7584 | 4044 | |
e690ca94 KS |
4045 | p->buffer = buffer; |
4046 | p->sentinel = ps->sentinel; | |
4047 | p->filter = ps->filter; | |
4048 | p->command = Qnil; | |
4049 | p->pid = Qnil; | |
4050 | XSETINT (p->infd, s); | |
4051 | XSETINT (p->outfd, s); | |
4052 | p->status = Qrun; | |
4053 | ||
4054 | /* Client processes for accepted connections are not stopped initially. */ | |
4055 | if (!EQ (p->filter, Qt)) | |
4056 | { | |
4057 | FD_SET (s, &input_wait_mask); | |
4058 | FD_SET (s, &non_keyboard_wait_mask); | |
4059 | } | |
4060 | ||
4061 | if (s > max_process_desc) | |
4062 | max_process_desc = s; | |
4063 | ||
177c0ea7 | 4064 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4065 | This seems to be the proper thing to do, as the coding system |
4066 | of the new process should reflect the settings at the time the | |
4067 | server socket was opened; not the current settings. */ | |
4068 | ||
4069 | p->decode_coding_system = ps->decode_coding_system; | |
4070 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4071 | setup_process_coding_systems (proc); |
e690ca94 KS |
4072 | |
4073 | p->decoding_buf = make_uninit_string (0); | |
4074 | p->decoding_carryover = make_number (0); | |
4075 | p->encoding_buf = make_uninit_string (0); | |
4076 | p->encoding_carryover = make_number (0); | |
4077 | ||
4078 | p->inherit_coding_system_flag | |
4079 | = (NILP (buffer) ? Qnil : ps->inherit_coding_system_flag); | |
4080 | ||
4081 | if (!NILP (ps->log)) | |
4082 | call3 (ps->log, server, proc, | |
4083 | concat3 (build_string ("accept from "), | |
4084 | (STRINGP (host) ? host : build_string ("-")), | |
4085 | build_string ("\n"))); | |
4086 | ||
bed9664a | 4087 | if (!NILP (p->sentinel)) |
177c0ea7 | 4088 | exec_sentinel (proc, |
e690ca94 KS |
4089 | concat3 (build_string ("open from "), |
4090 | (STRINGP (host) ? host : build_string ("-")), | |
4091 | build_string ("\n"))); | |
4092 | } | |
4093 | ||
d0d6b7c5 JB |
4094 | /* This variable is different from waiting_for_input in keyboard.c. |
4095 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4096 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4097 | for user-input when that process-filter was called. |
4098 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4099 | lisp code is being evalled. |
4100 | This is also used in record_asynch_buffer_change. | |
4101 | For that purpose, this must be 0 | |
214d6069 | 4102 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4103 | static int waiting_for_user_input_p; |
4104 | ||
c573ae8e | 4105 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4106 | static void |
214d6069 | 4107 | wait_reading_process_output_1 () |
c573ae8e RS |
4108 | { |
4109 | } | |
4110 | ||
d0d6b7c5 JB |
4111 | /* Read and dispose of subprocess output while waiting for timeout to |
4112 | elapse and/or keyboard input to be available. | |
4113 | ||
de6fd4b9 | 4114 | TIME_LIMIT is: |
d0d6b7c5 JB |
4115 | timeout in seconds, or |
4116 | zero for no limit, or | |
4117 | -1 means gobble data immediately available but don't wait for any. | |
4118 | ||
de6fd4b9 RS |
4119 | MICROSECS is: |
4120 | an additional duration to wait, measured in microseconds. | |
4121 | If this is nonzero and time_limit is 0, then the timeout | |
4122 | consists of MICROSECS only. | |
6e4f3667 | 4123 | |
de6fd4b9 | 4124 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4125 | 0 to ignore keyboard input, or |
4126 | 1 to return when input is available, or | |
84aa3ace | 4127 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4128 | the quit handler, or |
b89a415a KS |
4129 | |
4130 | DO_DISPLAY != 0 means redisplay should be done to show subprocess | |
107ed38d | 4131 | output that arrives. |
d0d6b7c5 | 4132 | |
b89a415a KS |
4133 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4134 | (and gobble terminal input into the buffer if any arrives). | |
4135 | ||
4136 | If WAIT_PROC is specified, wait until something arrives from that | |
4137 | process. The return value is true iff we read some input from | |
4138 | that process. | |
4139 | ||
4140 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4141 | (suspending output from other processes). A negative value | |
4142 | means don't run any timers either. | |
4143 | ||
4144 | If WAIT_PROC is specified, then the function returns true iff we | |
4145 | received input from that process before the timeout elapsed. | |
eb8c3be9 | 4146 | Otherwise, return true iff we received input from any process. */ |
d0d6b7c5 | 4147 | |
dfcf069d | 4148 | int |
214d6069 KS |
4149 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
4150 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
4151 | int time_limit, microsecs, read_kbd, do_display; |
4152 | Lisp_Object wait_for_cell; | |
4153 | struct Lisp_Process *wait_proc; | |
4154 | int just_wait_proc; | |
d0d6b7c5 | 4155 | { |
41d03b9a | 4156 | register int channel, nfds; |
855448dc | 4157 | SELECT_TYPE Available; |
bad49fc7 | 4158 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4159 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4160 | int check_connect; |
4161 | #endif | |
4162 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4163 | int xerrno; |
4164 | Lisp_Object proc; | |
41d03b9a | 4165 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4166 | int wait_channel = -1; |
d0d6b7c5 | 4167 | int got_some_input = 0; |
f3fbd155 KR |
4168 | /* Either nil or a cons cell, the car of which is of interest and |
4169 | may be changed outside of this routine. */ | |
855448dc | 4170 | int saved_waiting_for_user_input_p = waiting_for_user_input_p; |
d0d6b7c5 JB |
4171 | |
4172 | FD_ZERO (&Available); | |
bad49fc7 | 4173 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4174 | FD_ZERO (&Connecting); |
bad49fc7 | 4175 | #endif |
d0d6b7c5 | 4176 | |
b89a415a KS |
4177 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4178 | if (wait_proc != NULL) | |
4179 | wait_channel = XINT (wait_proc->infd); | |
d0d6b7c5 | 4180 | |
b89a415a | 4181 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4182 | |
4183 | /* Since we may need to wait several times, | |
4184 | compute the absolute time to return at. */ | |
4185 | if (time_limit || microsecs) | |
4186 | { | |
4187 | EMACS_GET_TIME (end_time); | |
4188 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4189 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4190 | } | |
19310311 | 4191 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4192 | /* AlainF 5-Jul-1996 |
4193 | HP-UX 10.10 seem to have problems with signals coming in | |
4194 | Causes "poll: interrupted system call" messages when Emacs is run | |
4195 | in an X window | |
75eb23f1 RS |
4196 | Turn off periodic alarms (in case they are in use), |
4197 | and then turn off any other atimers. */ | |
4198 | stop_polling (); | |
30904ab7 | 4199 | turn_on_atimers (0); |
19310311 | 4200 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
d0d6b7c5 | 4201 | |
d0d6b7c5 JB |
4202 | while (1) |
4203 | { | |
c0239a0b RS |
4204 | int timeout_reduced_for_timers = 0; |
4205 | ||
d0d6b7c5 JB |
4206 | /* If calling from keyboard input, do not quit |
4207 | since we want to return C-g as an input character. | |
4208 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4209 | if (read_kbd >= 0) |
d0d6b7c5 | 4210 | QUIT; |
43ff45a0 SM |
4211 | #ifdef SYNC_INPUT |
4212 | else if (interrupt_input_pending) | |
4213 | handle_async_input (); | |
4214 | #endif | |
d0d6b7c5 | 4215 | |
889255b4 | 4216 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4217 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4218 | break; |
4219 | ||
d0d6b7c5 JB |
4220 | /* Compute time from now till when time limit is up */ |
4221 | /* Exit if already run out */ | |
4222 | if (time_limit == -1) | |
4223 | { | |
4224 | /* -1 specified for timeout means | |
4225 | gobble output available now | |
4226 | but don't wait at all. */ | |
4227 | ||
4228 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4229 | } | |
4230 | else if (time_limit || microsecs) | |
4231 | { | |
4232 | EMACS_GET_TIME (timeout); | |
4233 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4234 | if (EMACS_TIME_NEG_P (timeout)) | |
4235 | break; | |
4236 | } | |
4237 | else | |
4238 | { | |
4239 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4240 | } | |
4241 | ||
f854a00b RS |
4242 | /* Normally we run timers here. |
4243 | But not if wait_for_cell; in those cases, | |
4244 | the wait is supposed to be short, | |
4245 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4246 | if (NILP (wait_for_cell) |
b89a415a | 4247 | && just_wait_proc >= 0) |
fb4c3627 | 4248 | { |
c0239a0b | 4249 | EMACS_TIME timer_delay; |
c573ae8e | 4250 | |
9baacf76 | 4251 | do |
c573ae8e | 4252 | { |
9baacf76 | 4253 | int old_timers_run = timers_run; |
c88164fe | 4254 | struct buffer *old_buffer = current_buffer; |
177c0ea7 | 4255 | |
9baacf76 | 4256 | timer_delay = timer_check (1); |
a2fab450 GM |
4257 | |
4258 | /* If a timer has run, this might have changed buffers | |
4259 | an alike. Make read_key_sequence aware of that. */ | |
4260 | if (timers_run != old_timers_run | |
c88164fe | 4261 | && old_buffer != current_buffer |
a2fab450 GM |
4262 | && waiting_for_user_input_p == -1) |
4263 | record_asynch_buffer_change (); | |
177c0ea7 | 4264 | |
9baacf76 GM |
4265 | if (timers_run != old_timers_run && do_display) |
4266 | /* We must retry, since a timer may have requeued itself | |
4267 | and that could alter the time_delay. */ | |
3007ebfb | 4268 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4269 | else |
4270 | break; | |
c573ae8e | 4271 | } |
9baacf76 | 4272 | while (!detect_input_pending ()); |
c573ae8e | 4273 | |
69645afc | 4274 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4275 | if (read_kbd != 0 |
69645afc RS |
4276 | && requeued_events_pending_p ()) |
4277 | break; | |
4278 | ||
c0239a0b | 4279 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4280 | { |
4281 | EMACS_TIME difference; | |
4282 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4283 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4284 | { |
4285 | timeout = timer_delay; | |
4286 | timeout_reduced_for_timers = 1; | |
4287 | } | |
fb4c3627 | 4288 | } |
4abca5e7 RS |
4289 | /* If time_limit is -1, we are not going to wait at all. */ |
4290 | else if (time_limit != -1) | |
c573ae8e RS |
4291 | { |
4292 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4293 | wait_reading_process_output_1 (); |
c573ae8e | 4294 | } |
fb4c3627 RS |
4295 | } |
4296 | ||
90ab1a81 JB |
4297 | /* Cause C-g and alarm signals to take immediate action, |
4298 | and cause input available signals to zero out timeout. | |
4299 | ||
4300 | It is important that we do this before checking for process | |
4301 | activity. If we get a SIGCHLD after the explicit checks for | |
4302 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4303 | if (read_kbd < 0) |
90ab1a81 JB |
4304 | set_waiting_for_input (&timeout); |
4305 | ||
6be429b1 JB |
4306 | /* If status of something has changed, and no input is |
4307 | available, notify the user of the change right away. After | |
4308 | this explicit check, we'll let the SIGCHLD handler zap | |
4309 | timeout to get our attention. */ | |
4310 | if (update_tick != process_tick && do_display) | |
4311 | { | |
bad49fc7 KS |
4312 | SELECT_TYPE Atemp; |
4313 | #ifdef NON_BLOCKING_CONNECT | |
4314 | SELECT_TYPE Ctemp; | |
4315 | #endif | |
dd2a17ab | 4316 | |
6be429b1 | 4317 | Atemp = input_wait_mask; |
e082ac9d ST |
4318 | #if 0 |
4319 | /* On Mac OS X 10.0, the SELECT system call always says input is | |
e0f712ba | 4320 | present (for reading) at stdin, even when none is. This |
aa87aafc | 4321 | causes the call to SELECT below to return 1 and |
e0f712ba | 4322 | status_notify not to be called. As a result output of |
39b1da20 | 4323 | subprocesses are incorrectly discarded. |
e082ac9d | 4324 | */ |
e0f712ba AC |
4325 | FD_CLR (0, &Atemp); |
4326 | #endif | |
bad49fc7 KS |
4327 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4328 | ||
6be429b1 | 4329 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
0c9960e9 | 4330 | if ((select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4331 | &Atemp, |
bad49fc7 | 4332 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4333 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4334 | #else |
4335 | (SELECT_TYPE *)0, | |
4336 | #endif | |
dd2a17ab | 4337 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4338 | <= 0)) |
90ab1a81 JB |
4339 | { |
4340 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4341 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4342 | clear_waiting_for_input (); |
ff6daed3 | 4343 | status_notify (NULL); |
90ab1a81 | 4344 | } |
6be429b1 JB |
4345 | } |
4346 | ||
dd2a17ab KS |
4347 | /* Don't wait for output from a non-running process. Just |
4348 | read whatever data has already been received. */ | |
6be429b1 JB |
4349 | if (wait_proc != 0 && !NILP (wait_proc->raw_status_low)) |
4350 | update_status (wait_proc); | |
4351 | if (wait_proc != 0 | |
dd2a17ab KS |
4352 | && ! EQ (wait_proc->status, Qrun) |
4353 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4354 | { |
215b45e9 | 4355 | int nread, total_nread = 0; |
7ce63188 | 4356 | |
9aa2a7f4 | 4357 | clear_waiting_for_input (); |
7ce63188 RS |
4358 | XSETPROCESS (proc, wait_proc); |
4359 | ||
4360 | /* Read data from the process, until we exhaust it. */ | |
e1b37c34 | 4361 | while (XINT (wait_proc->infd) >= 0) |
215b45e9 | 4362 | { |
e1b37c34 GM |
4363 | nread = read_process_output (proc, XINT (wait_proc->infd)); |
4364 | ||
4365 | if (nread == 0) | |
4366 | break; | |
4367 | ||
177c0ea7 | 4368 | if (0 < nread) |
215b45e9 RS |
4369 | total_nread += nread; |
4370 | #ifdef EIO | |
4371 | else if (nread == -1 && EIO == errno) | |
4372 | break; | |
e1b37c34 GM |
4373 | #endif |
4374 | #ifdef EAGAIN | |
4375 | else if (nread == -1 && EAGAIN == errno) | |
4376 | break; | |
4377 | #endif | |
4378 | #ifdef EWOULDBLOCK | |
4379 | else if (nread == -1 && EWOULDBLOCK == errno) | |
4380 | break; | |
215b45e9 RS |
4381 | #endif |
4382 | } | |
7ce63188 | 4383 | if (total_nread > 0 && do_display) |
3007ebfb | 4384 | redisplay_preserve_echo_area (10); |
7ce63188 | 4385 | |
9aa2a7f4 JB |
4386 | break; |
4387 | } | |
6be429b1 | 4388 | |
d0d6b7c5 JB |
4389 | /* Wait till there is something to do */ |
4390 | ||
b89a415a | 4391 | if (wait_proc && just_wait_proc) |
107ed38d | 4392 | { |
b89a415a KS |
4393 | if (XINT (wait_proc->infd) < 0) /* Terminated */ |
4394 | break; | |
107ed38d | 4395 | FD_SET (XINT (wait_proc->infd), &Available); |
bad49fc7 KS |
4396 | check_delay = 0; |
4397 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4398 | } |
4399 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4400 | { |
4401 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4402 | check_delay = 0; |
4403 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4404 | } |
a69281ff | 4405 | else |
dd2a17ab | 4406 | { |
b89a415a | 4407 | if (! read_kbd) |
dd2a17ab KS |
4408 | Available = non_keyboard_wait_mask; |
4409 | else | |
4410 | Available = input_wait_mask; | |
bad49fc7 | 4411 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
3af55251 | 4412 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4413 | } |
d0d6b7c5 | 4414 | |
ff11dfa1 | 4415 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4416 | redisplay now, before we start to wait. There is a race |
4417 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4418 | and indicates that a frame is trashed, the select may block |
4419 | displaying a trashed screen. */ | |
5164ee8e | 4420 | if (frame_garbaged && do_display) |
7286affd RS |
4421 | { |
4422 | clear_waiting_for_input (); | |
3007ebfb | 4423 | redisplay_preserve_echo_area (11); |
b89a415a | 4424 | if (read_kbd < 0) |
7efe788e | 4425 | set_waiting_for_input (&timeout); |
7286affd | 4426 | } |
ffd56f97 | 4427 | |
dd2a17ab | 4428 | no_avail = 0; |
b89a415a | 4429 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4430 | { |
4431 | nfds = 0; | |
dd2a17ab | 4432 | no_avail = 1; |
0a65b032 RS |
4433 | } |
4434 | else | |
dd2a17ab | 4435 | { |
bad49fc7 | 4436 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4437 | if (check_connect) |
4438 | Connecting = connect_wait_mask; | |
bad49fc7 | 4439 | #endif |
2d942bfa KS |
4440 | |
4441 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a KS |
4442 | /* Set the timeout for adaptive read buffering if any |
4443 | process has non-nil read_output_skip and non-zero | |
4444 | read_output_delay, and we are not reading output for a | |
4445 | specific wait_channel. It is not executed if | |
4446 | Vprocess_adaptive_read_buffering is nil. */ | |
2d942bfa KS |
4447 | if (process_output_skip && check_delay > 0) |
4448 | { | |
4449 | int usecs = EMACS_USECS (timeout); | |
4450 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4451 | usecs = READ_OUTPUT_DELAY_MAX; | |
4452 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4453 | { | |
4454 | proc = chan_process[channel]; | |
4455 | if (NILP (proc)) | |
4456 | continue; | |
db853b7a KS |
4457 | /* Find minimum non-zero read_output_delay among the |
4458 | processes with non-nil read_output_skip. */ | |
9076a823 | 4459 | if (XINT (XPROCESS (proc)->read_output_delay) > 0) |
2d942bfa KS |
4460 | { |
4461 | check_delay--; | |
4462 | if (NILP (XPROCESS (proc)->read_output_skip)) | |
4463 | continue; | |
4464 | FD_CLR (channel, &Available); | |
4465 | XPROCESS (proc)->read_output_skip = Qnil; | |
4466 | if (XINT (XPROCESS (proc)->read_output_delay) < usecs) | |
4467 | usecs = XINT (XPROCESS (proc)->read_output_delay); | |
4468 | } | |
4469 | } | |
4470 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4471 | process_output_skip = 0; | |
4472 | } | |
4473 | #endif | |
4474 | ||
dd2a17ab | 4475 | nfds = select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4476 | &Available, |
bad49fc7 | 4477 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4478 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4479 | #else |
4480 | (SELECT_TYPE *)0, | |
4481 | #endif | |
dd2a17ab KS |
4482 | (SELECT_TYPE *)0, &timeout); |
4483 | } | |
6720a7fb | 4484 | |
d0d6b7c5 JB |
4485 | xerrno = errno; |
4486 | ||
4487 | /* Make C-g and alarm signals set flags again */ | |
4488 | clear_waiting_for_input (); | |
4489 | ||
4490 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4491 | do_pending_window_change (0); |
d0d6b7c5 | 4492 | |
c0239a0b RS |
4493 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4494 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4495 | break; |
4496 | if (nfds < 0) | |
4497 | { | |
4498 | if (xerrno == EINTR) | |
dd2a17ab | 4499 | no_avail = 1; |
b0310da4 JB |
4500 | #ifdef ultrix |
4501 | /* Ultrix select seems to return ENOMEM when it is | |
4502 | interrupted. Treat it just like EINTR. Bleah. Note | |
4503 | that we want to test for the "ultrix" CPP symbol, not | |
4504 | "__ultrix__"; the latter is only defined under GCC, but | |
4505 | not by DEC's bundled CC. -JimB */ | |
8058415c | 4506 | else if (xerrno == ENOMEM) |
dd2a17ab | 4507 | no_avail = 1; |
8058415c | 4508 | #endif |
d0d6b7c5 JB |
4509 | #ifdef ALLIANT |
4510 | /* This happens for no known reason on ALLIANT. | |
4511 | I am guessing that this is the right response. -- RMS. */ | |
4512 | else if (xerrno == EFAULT) | |
dd2a17ab | 4513 | no_avail = 1; |
d0d6b7c5 JB |
4514 | #endif |
4515 | else if (xerrno == EBADF) | |
4516 | { | |
4517 | #ifdef AIX | |
4518 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4519 | the child's closure of the pts gives the parent a SIGHUP, and | |
4520 | the ptc file descriptor is automatically closed, | |
4521 | yielding EBADF here or at select() call above. | |
4522 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4523 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4524 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4525 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4526 | #else |
4527 | abort (); | |
4528 | #endif | |
4529 | } | |
4530 | else | |
68c45bf0 | 4531 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4532 | } |
dd2a17ab KS |
4533 | |
4534 | if (no_avail) | |
4535 | { | |
4536 | FD_ZERO (&Available); | |
bad49fc7 | 4537 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4538 | } |
4539 | ||
26ec91de | 4540 | #if defined(sun) && !defined(USG5_4) |
dd2a17ab KS |
4541 | if (nfds > 0 && keyboard_bit_set (&Available) |
4542 | && interrupt_input) | |
e0109153 JB |
4543 | /* System sometimes fails to deliver SIGIO. |
4544 | ||
4545 | David J. Mackenzie says that Emacs doesn't compile under | |
4546 | Solaris if this code is enabled, thus the USG5_4 in the CPP | |
4547 | conditional. "I haven't noticed any ill effects so far. | |
4548 | If you find a Solaris expert somewhere, they might know | |
4549 | better." */ | |
d0d6b7c5 JB |
4550 | kill (getpid (), SIGIO); |
4551 | #endif | |
4552 | ||
5d5beb62 RS |
4553 | #if 0 /* When polling is used, interrupt_input is 0, |
4554 | so get_input_pending should read the input. | |
4555 | So this should not be needed. */ | |
4556 | /* If we are using polling for input, | |
4557 | and we see input available, make it get read now. | |
4558 | Otherwise it might not actually get read for a second. | |
214d6069 | 4559 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4560 | it might never get read at all if we don't spend much time |
214d6069 | 4561 | outside of wait_reading_process_output. */ |
b89a415a | 4562 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4563 | && keyboard_bit_set (&Available) |
4564 | && input_polling_used ()) | |
4565 | kill (getpid (), SIGALRM); | |
4566 | #endif | |
4567 | ||
d0d6b7c5 JB |
4568 | /* Check for keyboard input */ |
4569 | /* If there is any, return immediately | |
4570 | to give it higher priority than subprocesses */ | |
4571 | ||
b89a415a | 4572 | if (read_kbd != 0) |
6ed6233b | 4573 | { |
a2fab450 | 4574 | int old_timers_run = timers_run; |
c88164fe | 4575 | struct buffer *old_buffer = current_buffer; |
a2fab450 | 4576 | int leave = 0; |
177c0ea7 | 4577 | |
5d6c2aa3 | 4578 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4579 | { |
4580 | swallow_events (do_display); | |
4581 | if (detect_input_pending_run_timers (do_display)) | |
4582 | leave = 1; | |
4583 | } | |
6ed6233b | 4584 | |
a2fab450 GM |
4585 | /* If a timer has run, this might have changed buffers |
4586 | an alike. Make read_key_sequence aware of that. */ | |
4587 | if (timers_run != old_timers_run | |
c88164fe GM |
4588 | && waiting_for_user_input_p == -1 |
4589 | && old_buffer != current_buffer) | |
a2fab450 GM |
4590 | record_asynch_buffer_change (); |
4591 | ||
4592 | if (leave) | |
4593 | break; | |
177c0ea7 JB |
4594 | } |
4595 | ||
69645afc | 4596 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4597 | if (read_kbd != 0 |
69645afc RS |
4598 | && requeued_events_pending_p ()) |
4599 | break; | |
4600 | ||
77e1b3d4 RS |
4601 | /* If we are not checking for keyboard input now, |
4602 | do process events (but don't run any timers). | |
4603 | This is so that X events will be processed. | |
0c9960e9 | 4604 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4605 | That would causes delays in pasting selections, for example. |
4606 | ||
4607 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4608 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4609 | { |
4610 | swallow_events (do_display); | |
0c9960e9 | 4611 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4612 | if (detect_input_pending ()) |
4613 | break; | |
5d5beb62 | 4614 | #endif |
0c9960e9 | 4615 | } |
f854a00b | 4616 | |
84aa3ace | 4617 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4618 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4619 | break; |
4620 | ||
4746118a | 4621 | #ifdef SIGIO |
5d5beb62 | 4622 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4623 | go read it. This can happen with X on BSD after logging out. |
4624 | In that case, there really is no input and no SIGIO, | |
4625 | but select says there is input. */ | |
4626 | ||
b89a415a | 4627 | if (read_kbd && interrupt_input |
2601f59e | 4628 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4629 | kill (getpid (), SIGIO); |
4746118a | 4630 | #endif |
d0d6b7c5 | 4631 | |
d0d6b7c5 JB |
4632 | if (! wait_proc) |
4633 | got_some_input |= nfds > 0; | |
4634 | ||
32676c08 JB |
4635 | /* If checking input just got us a size-change event from X, |
4636 | obey it now if we should. */ | |
b89a415a | 4637 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4638 | do_pending_window_change (0); |
32676c08 | 4639 | |
a9f2c884 | 4640 | /* Check for data from a process. */ |
dd2a17ab KS |
4641 | if (no_avail || nfds == 0) |
4642 | continue; | |
4643 | ||
a9f2c884 RS |
4644 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4645 | but this is safer in the short run. */ | |
a69281ff | 4646 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4647 | { |
a69281ff RS |
4648 | if (FD_ISSET (channel, &Available) |
4649 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4650 | { |
4651 | int nread; | |
4652 | ||
4653 | /* If waiting for this channel, arrange to return as | |
4654 | soon as no more input to be processed. No more | |
4655 | waiting. */ | |
4656 | if (wait_channel == channel) | |
4657 | { | |
a9f2c884 | 4658 | wait_channel = -1; |
d0d6b7c5 JB |
4659 | time_limit = -1; |
4660 | got_some_input = 1; | |
4661 | } | |
4662 | proc = chan_process[channel]; | |
4663 | if (NILP (proc)) | |
4664 | continue; | |
4665 | ||
e690ca94 KS |
4666 | /* If this is a server stream socket, accept connection. */ |
4667 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4668 | { | |
4669 | server_accept_connection (proc, channel); | |
4670 | continue; | |
4671 | } | |
4672 | ||
d0d6b7c5 JB |
4673 | /* Read data from the process, starting with our |
4674 | buffered-ahead character if we have one. */ | |
4675 | ||
4676 | nread = read_process_output (proc, channel); | |
4677 | if (nread > 0) | |
4678 | { | |
4679 | /* Since read_process_output can run a filter, | |
4680 | which can call accept-process-output, | |
4681 | don't try to read from any other processes | |
4682 | before doing the select again. */ | |
4683 | FD_ZERO (&Available); | |
4684 | ||
4685 | if (do_display) | |
3007ebfb | 4686 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4687 | } |
4688 | #ifdef EWOULDBLOCK | |
4689 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4690 | ; | |
0b75e9a4 | 4691 | #endif |
89d7280d RS |
4692 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4693 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4694 | #ifdef O_NONBLOCK |
4695 | else if (nread == -1 && errno == EAGAIN) | |
4696 | ; | |
4697 | #else | |
4698 | #ifdef O_NDELAY | |
4699 | else if (nread == -1 && errno == EAGAIN) | |
4700 | ; | |
4701 | /* Note that we cannot distinguish between no input | |
4702 | available now and a closed pipe. | |
4703 | With luck, a closed pipe will be accompanied by | |
4704 | subprocess termination and SIGCHLD. */ | |
4705 | else if (nread == 0 && !NETCONN_P (proc)) | |
4706 | ; | |
ffd56f97 JB |
4707 | #endif /* O_NDELAY */ |
4708 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4709 | #ifdef HAVE_PTYS |
4710 | /* On some OSs with ptys, when the process on one end of | |
4711 | a pty exits, the other end gets an error reading with | |
4712 | errno = EIO instead of getting an EOF (0 bytes read). | |
4713 | Therefore, if we get an error reading and errno = | |
4714 | EIO, just continue, because the child process has | |
4715 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4716 | get a SIGCHLD). |
4717 | ||
4718 | However, it has been known to happen that the SIGCHLD | |
4719 | got lost. So raise the signl again just in case. | |
4720 | It can't hurt. */ | |
d0d6b7c5 | 4721 | else if (nread == -1 && errno == EIO) |
5651af6d | 4722 | kill (getpid (), SIGCHLD); |
ffd56f97 JB |
4723 | #endif /* HAVE_PTYS */ |
4724 | /* If we can detect process termination, don't consider the process | |
4725 | gone just because its pipe is closed. */ | |
d0d6b7c5 JB |
4726 | #ifdef SIGCHLD |
4727 | else if (nread == 0 && !NETCONN_P (proc)) | |
4728 | ; | |
4729 | #endif | |
4730 | else | |
4731 | { | |
4732 | /* Preserve status of processes already terminated. */ | |
4733 | XSETINT (XPROCESS (proc)->tick, ++process_tick); | |
4734 | deactivate_process (proc); | |
4735 | if (!NILP (XPROCESS (proc)->raw_status_low)) | |
4736 | update_status (XPROCESS (proc)); | |
4737 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4738 | XPROCESS (proc)->status | |
4739 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4740 | } | |
4741 | } | |
177c0ea7 | 4742 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
4743 | if (check_connect && FD_ISSET (channel, &Connecting) |
4744 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
4745 | { |
4746 | struct Lisp_Process *p; | |
dd2a17ab KS |
4747 | |
4748 | FD_CLR (channel, &connect_wait_mask); | |
4749 | if (--num_pending_connects < 0) | |
4750 | abort (); | |
4751 | ||
4752 | proc = chan_process[channel]; | |
4753 | if (NILP (proc)) | |
4754 | continue; | |
4755 | ||
4756 | p = XPROCESS (proc); | |
4757 | ||
4758 | #ifdef GNU_LINUX | |
4759 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
4760 | So only use it on systems where it is known to work. */ | |
4761 | { | |
e690ca94 | 4762 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
4763 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
4764 | xerrno = errno; | |
4765 | } | |
4766 | #else | |
44c887be PJ |
4767 | { |
4768 | struct sockaddr pname; | |
4769 | int pnamelen = sizeof(pname); | |
4770 | ||
4771 | /* If connection failed, getpeername will fail. */ | |
4772 | xerrno = 0; | |
4773 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
4774 | { | |
4775 | /* Obtain connect failure code through error slippage. */ | |
4776 | char dummy; | |
dd2a17ab | 4777 | xerrno = errno; |
44c887be PJ |
4778 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
4779 | xerrno = errno; | |
4780 | } | |
4781 | } | |
dd2a17ab KS |
4782 | #endif |
4783 | if (xerrno) | |
4784 | { | |
4785 | XSETINT (p->tick, ++process_tick); | |
4786 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); | |
4787 | deactivate_process (proc); | |
4788 | } | |
4789 | else | |
4790 | { | |
4791 | p->status = Qrun; | |
4792 | /* Execute the sentinel here. If we had relied on | |
4793 | status_notify to do it later, it will read input | |
4794 | from the process before calling the sentinel. */ | |
4795 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4796 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab KS |
4797 | { |
4798 | FD_SET (XINT (p->infd), &input_wait_mask); | |
4799 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
4800 | } | |
4801 | } | |
4802 | } | |
4803 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4804 | } /* end for each file descriptor */ |
4805 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4806 | |
855448dc | 4807 | waiting_for_user_input_p = saved_waiting_for_user_input_p; |
d430ee71 | 4808 | |
ffd56f97 JB |
4809 | /* If calling from keyboard input, do not quit |
4810 | since we want to return C-g as an input character. | |
4811 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4812 | if (read_kbd >= 0) |
ffd56f97 JB |
4813 | { |
4814 | /* Prevent input_pending from remaining set if we quit. */ | |
4815 | clear_input_pending (); | |
4816 | QUIT; | |
4817 | } | |
19310311 | 4818 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4819 | /* AlainF 5-Jul-1996 |
4820 | HP-UX 10.10 seems to have problems with signals coming in | |
4821 | Causes "poll: interrupted system call" messages when Emacs is run | |
4822 | in an X window | |
4823 | Turn periodic alarms back on */ | |
5d5beb62 | 4824 | start_polling (); |
19310311 | 4825 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
efa2a55c | 4826 | |
d0d6b7c5 JB |
4827 | return got_some_input; |
4828 | } | |
4829 | \f | |
3b9a3dfa RS |
4830 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4831 | ||
4832 | static Lisp_Object | |
4833 | read_process_output_call (fun_and_args) | |
4834 | Lisp_Object fun_and_args; | |
4835 | { | |
70949dac | 4836 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4837 | } |
4838 | ||
4839 | static Lisp_Object | |
4840 | read_process_output_error_handler (error) | |
4841 | Lisp_Object error; | |
4842 | { | |
4843 | cmd_error_internal (error, "error in process filter: "); | |
4844 | Vinhibit_quit = Qt; | |
4845 | update_echo_area (); | |
833ba342 | 4846 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4847 | return Qt; |
3b9a3dfa RS |
4848 | } |
4849 | ||
d0d6b7c5 JB |
4850 | /* Read pending output from the process channel, |
4851 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 4852 | Yield number of decoded characters read. |
d0d6b7c5 | 4853 | |
116c423c | 4854 | This function reads at most 4096 characters. |
d0d6b7c5 | 4855 | If you want to read all available subprocess output, |
0fa1789e KH |
4856 | you must call it repeatedly until it returns zero. |
4857 | ||
4858 | The characters read are decoded according to PROC's coding-system | |
4859 | for decoding. */ | |
d0d6b7c5 | 4860 | |
ff6daed3 | 4861 | static int |
d0d6b7c5 JB |
4862 | read_process_output (proc, channel) |
4863 | Lisp_Object proc; | |
4864 | register int channel; | |
4865 | { | |
e1283999 | 4866 | register int nbytes; |
d0d6b7c5 | 4867 | char *chars; |
d0d6b7c5 JB |
4868 | register Lisp_Object outstream; |
4869 | register struct buffer *old = current_buffer; | |
4870 | register struct Lisp_Process *p = XPROCESS (proc); | |
4871 | register int opoint; | |
c7580538 | 4872 | struct coding_system *coding = proc_decode_coding_system[channel]; |
e7fbaa65 | 4873 | int carryover = XINT (p->decoding_carryover); |
116c423c | 4874 | int readmax = 4096; |
d0d6b7c5 JB |
4875 | |
4876 | #ifdef VMS | |
4877 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); | |
4878 | ||
4879 | vs = get_vms_process_pointer (p->pid); | |
4880 | if (vs) | |
4881 | { | |
4882 | if (!vs->iosb[0]) | |
a319f7c1 | 4883 | return (0); /* Really weird if it does this */ |
d0d6b7c5 JB |
4884 | if (!(vs->iosb[0] & 1)) |
4885 | return -1; /* I/O error */ | |
4886 | } | |
4887 | else | |
4888 | error ("Could not get VMS process pointer"); | |
4889 | chars = vs->inputBuffer; | |
1d2fc612 RS |
4890 | nbytes = clean_vms_buffer (chars, vs->iosb[1]); |
4891 | if (nbytes <= 0) | |
d0d6b7c5 JB |
4892 | { |
4893 | start_vms_process_read (vs); /* Crank up the next read on the process */ | |
4894 | return 1; /* Nothing worth printing, say we got 1 */ | |
4895 | } | |
e7fbaa65 | 4896 | if (carryover > 0) |
0fa1789e | 4897 | { |
e7fbaa65 KH |
4898 | /* The data carried over in the previous decoding (which are at |
4899 | the tail of decoding buffer) should be prepended to the new | |
4900 | data read to decode all together. */ | |
ed7a4b2d | 4901 | chars = (char *) alloca (nbytes + carryover); |
d5db4077 | 4902 | bcopy (SDATA (p->decoding_buf), buf, carryover); |
ed7a4b2d | 4903 | bcopy (vs->inputBuffer, chars + carryover, nbytes); |
0fa1789e | 4904 | } |
d0d6b7c5 | 4905 | #else /* not VMS */ |
e690ca94 | 4906 | |
e690ca94 | 4907 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
4908 | if (carryover) |
4909 | /* See the comment above. */ | |
d5db4077 | 4910 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 4911 | |
e690ca94 KS |
4912 | #ifdef DATAGRAM_SOCKETS |
4913 | /* We have a working select, so proc_buffered_char is always -1. */ | |
4914 | if (DATAGRAM_CHAN_P (channel)) | |
4915 | { | |
4916 | int len = datagram_address[channel].len; | |
39b1da20 | 4917 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
4918 | 0, datagram_address[channel].sa, &len); |
4919 | } | |
4920 | else | |
4921 | #endif | |
d0d6b7c5 | 4922 | if (proc_buffered_char[channel] < 0) |
2d942bfa | 4923 | { |
39b1da20 | 4924 | nbytes = emacs_read (channel, chars + carryover, readmax); |
2d942bfa | 4925 | #ifdef ADAPTIVE_READ_BUFFERING |
39b1da20 | 4926 | if (nbytes > 0 && !NILP (p->adaptive_read_buffering)) |
2d942bfa KS |
4927 | { |
4928 | int delay = XINT (p->read_output_delay); | |
05b72afd | 4929 | if (nbytes < 256) |
2d942bfa KS |
4930 | { |
4931 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
4932 | { | |
4933 | if (delay == 0) | |
4934 | process_output_delay_count++; | |
4935 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
4936 | } | |
4937 | } | |
39b1da20 | 4938 | else if (delay > 0 && (nbytes == readmax)) |
2d942bfa KS |
4939 | { |
4940 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
4941 | if (delay == 0) | |
4942 | process_output_delay_count--; | |
4943 | } | |
4944 | XSETINT (p->read_output_delay, delay); | |
4945 | if (delay) | |
4946 | { | |
4947 | p->read_output_skip = Qt; | |
4948 | process_output_skip = 1; | |
4949 | } | |
4950 | } | |
4951 | #endif | |
4952 | } | |
d0d6b7c5 JB |
4953 | else |
4954 | { | |
ed7a4b2d | 4955 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 4956 | proc_buffered_char[channel] = -1; |
39b1da20 | 4957 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
4958 | if (nbytes < 0) |
4959 | nbytes = 1; | |
d0d6b7c5 | 4960 | else |
1d2fc612 | 4961 | nbytes = nbytes + 1; |
d0d6b7c5 JB |
4962 | } |
4963 | #endif /* not VMS */ | |
4964 | ||
ca65341e KH |
4965 | XSETINT (p->decoding_carryover, 0); |
4966 | ||
ed7a4b2d | 4967 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 4968 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
4969 | if (nbytes <= 0) |
4970 | { | |
4971 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
4972 | return nbytes; | |
4973 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
4974 | } | |
d0d6b7c5 | 4975 | |
1d2fc612 | 4976 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 4977 | nbytes += carryover; |
0fa1789e | 4978 | |
1d2fc612 | 4979 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
4980 | outstream = p->filter; |
4981 | if (!NILP (outstream)) | |
4982 | { | |
177c0ea7 | 4983 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
4984 | hitting ^G when a filter happens to be running won't screw |
4985 | it up. */ | |
aed13378 | 4986 | int count = SPECPDL_INDEX (); |
30c78175 | 4987 | Lisp_Object odeactivate; |
dfc21838 | 4988 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 4989 | Lisp_Object text; |
4da2f5be | 4990 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 4991 | int waiting = waiting_for_user_input_p; |
30c78175 | 4992 | |
dfc21838 RS |
4993 | /* No need to gcpro these, because all we do with them later |
4994 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 4995 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
4996 | XSETBUFFER (obuffer, current_buffer); |
4997 | okeymap = current_buffer->keymap; | |
30c78175 | 4998 | |
d0d6b7c5 | 4999 | specbind (Qinhibit_quit, Qt); |
6545aada | 5000 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5001 | |
4da2f5be RS |
5002 | /* In case we get recursively called, |
5003 | and we already saved the match data nonrecursively, | |
5004 | save the same match data in safely recursive fashion. */ | |
5005 | if (outer_running_asynch_code) | |
5006 | { | |
5007 | Lisp_Object tem; | |
5008 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5009 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5010 | restore_search_regs (); | |
5011 | record_unwind_save_match_data (); | |
5012 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5013 | } |
5014 | ||
5015 | /* For speed, if a search happens within this code, | |
5016 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5017 | running_asynch_code = 1; |
4da2f5be | 5018 | |
ed7a4b2d KH |
5019 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
5020 | coding, 0); | |
082a1df2 | 5021 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
5022 | /* A new coding system might be found. */ |
5023 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
5024 | { | |
5025 | p->decode_coding_system = coding->symbol; | |
5026 | ||
5027 | /* Don't call setup_coding_system for | |
5028 | proc_decode_coding_system[channel] here. It is done in | |
5029 | detect_coding called via decode_coding above. */ | |
5030 | ||
5031 | /* If a coding system for encoding is not yet decided, we set | |
5032 | it as the same as coding-system for decoding. | |
5033 | ||
5034 | But, before doing that we must check if | |
5035 | proc_encode_coding_system[p->outfd] surely points to a | |
5036 | valid memory because p->outfd will be changed once EOF is | |
5037 | sent to the process. */ | |
5038 | if (NILP (p->encode_coding_system) | |
5039 | && proc_encode_coding_system[XINT (p->outfd)]) | |
5040 | { | |
5041 | p->encode_coding_system = coding->symbol; | |
5042 | setup_coding_system (coding->symbol, | |
5043 | proc_encode_coding_system[XINT (p->outfd)]); | |
5044 | } | |
5045 | } | |
51c6067d | 5046 | |
ed7a4b2d | 5047 | carryover = nbytes - coding->consumed; |
d7d2483a KS |
5048 | if (SCHARS (p->decoding_buf) < carryover) |
5049 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 5050 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
5051 | carryover); |
5052 | XSETINT (p->decoding_carryover, carryover); | |
03f04413 KH |
5053 | /* Adjust the multibyteness of TEXT to that of the filter. */ |
5054 | if (NILP (p->filter_multibyte) != ! STRING_MULTIBYTE (text)) | |
5055 | text = (STRING_MULTIBYTE (text) | |
5056 | ? Fstring_as_unibyte (text) | |
5057 | : Fstring_to_multibyte (text)); | |
e430e5ba | 5058 | if (SBYTES (text) > 0) |
dd97db06 KH |
5059 | internal_condition_case_1 (read_process_output_call, |
5060 | Fcons (outstream, | |
5061 | Fcons (proc, Fcons (text, Qnil))), | |
5062 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5063 | read_process_output_error_handler); | |
4da2f5be RS |
5064 | |
5065 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5066 | restore_search_regs (); |
4da2f5be | 5067 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5068 | |
592ce97f | 5069 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5070 | Vdeactivate_mark = odeactivate; |
5071 | ||
bbce7d72 RS |
5072 | /* Restore waiting_for_user_input_p as it was |
5073 | when we were called, in case the filter clobbered it. */ | |
5074 | waiting_for_user_input_p = waiting; | |
5075 | ||
7973cfa8 RS |
5076 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5077 | because we might have changed minor modes or other things | |
5078 | that affect key bindings. */ | |
dfc21838 RS |
5079 | if (! EQ (Fcurrent_buffer (), obuffer) |
5080 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5081 | #endif |
927e08be RS |
5082 | /* But do it only if the caller is actually going to read events. |
5083 | Otherwise there's no need to make him wake up, and it could | |
5084 | cause trouble (for example it would make Fsit_for return). */ | |
5085 | if (waiting_for_user_input_p == -1) | |
5086 | record_asynch_buffer_change (); | |
d72534ba | 5087 | |
d0d6b7c5 JB |
5088 | #ifdef VMS |
5089 | start_vms_process_read (vs); | |
5090 | #endif | |
2ea6d561 | 5091 | unbind_to (count, Qnil); |
e430e5ba | 5092 | return nbytes; |
d0d6b7c5 JB |
5093 | } |
5094 | ||
5095 | /* If no filter, write into buffer if it isn't dead. */ | |
5096 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
5097 | { | |
b0310da4 | 5098 | Lisp_Object old_read_only; |
12ca5cdf | 5099 | int old_begv, old_zv; |
d8a2934e | 5100 | int old_begv_byte, old_zv_byte; |
30c78175 | 5101 | Lisp_Object odeactivate; |
d8a2934e RS |
5102 | int before, before_byte; |
5103 | int opoint_byte; | |
ed7a4b2d | 5104 | Lisp_Object text; |
926b7e5e | 5105 | struct buffer *b; |
30c78175 RS |
5106 | |
5107 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 JB |
5108 | |
5109 | Fset_buffer (p->buffer); | |
6ec8bbd2 | 5110 | opoint = PT; |
d8a2934e | 5111 | opoint_byte = PT_BYTE; |
b0310da4 | 5112 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
5113 | old_begv = BEGV; |
5114 | old_zv = ZV; | |
d8a2934e RS |
5115 | old_begv_byte = BEGV_BYTE; |
5116 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
5117 | |
5118 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
5119 | |
5120 | /* Insert new output into buffer | |
5121 | at the current end-of-output marker, | |
5122 | thus preserving logical ordering of input and output. */ | |
5123 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5124 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5125 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5126 | ZV_BYTE)); | |
d0d6b7c5 | 5127 | else |
d8a2934e | 5128 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5129 | before = PT; |
d8a2934e | 5130 | before_byte = PT_BYTE; |
b0310da4 JB |
5131 | |
5132 | /* If the output marker is outside of the visible region, save | |
5133 | the restriction and widen. */ | |
6ec8bbd2 | 5134 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5135 | Fwiden (); |
5136 | ||
ed7a4b2d KH |
5137 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
5138 | coding, 0); | |
082a1df2 | 5139 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
5140 | /* A new coding system might be found. See the comment in the |
5141 | similar code in the previous `if' block. */ | |
5142 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
5143 | { | |
5144 | p->decode_coding_system = coding->symbol; | |
5145 | if (NILP (p->encode_coding_system) | |
5146 | && proc_encode_coding_system[XINT (p->outfd)]) | |
5147 | { | |
5148 | p->encode_coding_system = coding->symbol; | |
5149 | setup_coding_system (coding->symbol, | |
5150 | proc_encode_coding_system[XINT (p->outfd)]); | |
5151 | } | |
5152 | } | |
5153 | carryover = nbytes - coding->consumed; | |
d7d2483a KS |
5154 | if (SCHARS (p->decoding_buf) < carryover) |
5155 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 5156 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
5157 | carryover); |
5158 | XSETINT (p->decoding_carryover, carryover); | |
d69864bf KH |
5159 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5160 | if (NILP (current_buffer->enable_multibyte_characters) | |
5161 | != ! STRING_MULTIBYTE (text)) | |
5162 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5163 | ? Fstring_as_unibyte (text) |
03f04413 | 5164 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5165 | /* Insert before markers in case we are inserting where |
5166 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5167 | insert_from_string_before_markers (text, 0, 0, |
5168 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5169 | |
926b7e5e GM |
5170 | /* Make sure the process marker's position is valid when the |
5171 | process buffer is changed in the signal_after_change above. | |
5172 | W3 is known to do that. */ | |
5173 | if (BUFFERP (p->buffer) | |
5174 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5175 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5176 | else | |
5177 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5178 | |
d0d6b7c5 JB |
5179 | update_mode_lines++; |
5180 | ||
12ca5cdf RS |
5181 | /* Make sure opoint and the old restrictions |
5182 | float ahead of any new text just as point would. */ | |
5183 | if (opoint >= before) | |
d8a2934e RS |
5184 | { |
5185 | opoint += PT - before; | |
5186 | opoint_byte += PT_BYTE - before_byte; | |
5187 | } | |
12ca5cdf | 5188 | if (old_begv > before) |
d8a2934e RS |
5189 | { |
5190 | old_begv += PT - before; | |
5191 | old_begv_byte += PT_BYTE - before_byte; | |
5192 | } | |
12ca5cdf | 5193 | if (old_zv >= before) |
d8a2934e RS |
5194 | { |
5195 | old_zv += PT - before; | |
5196 | old_zv_byte += PT_BYTE - before_byte; | |
5197 | } | |
12ca5cdf | 5198 | |
b0310da4 | 5199 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5200 | if (old_begv != BEGV || old_zv != ZV) |
5201 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5202 | |
592ce97f | 5203 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5204 | Vdeactivate_mark = odeactivate; |
5205 | ||
b0310da4 | 5206 | current_buffer->read_only = old_read_only; |
d8a2934e | 5207 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 JB |
5208 | set_buffer_internal (old); |
5209 | } | |
5210 | #ifdef VMS | |
5211 | start_vms_process_read (vs); | |
5212 | #endif | |
1d2fc612 | 5213 | return nbytes; |
d0d6b7c5 JB |
5214 | } |
5215 | ||
5216 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
5217 | 0, 0, 0, | |
f3d9532b | 5218 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
fdb82f93 PJ |
5219 | This is intended for use by asynchronous process output filters and sentinels. */) |
5220 | () | |
d0d6b7c5 | 5221 | { |
8b4d685f | 5222 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
5223 | } |
5224 | \f | |
5225 | /* Sending data to subprocess */ | |
5226 | ||
5227 | jmp_buf send_process_frame; | |
0daad115 | 5228 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5229 | |
5230 | SIGTYPE | |
5231 | send_process_trap () | |
5232 | { | |
333f1b6f | 5233 | SIGNAL_THREAD_CHECK (SIGPIPE); |
d0d6b7c5 JB |
5234 | #ifdef BSD4_1 |
5235 | sigrelse (SIGPIPE); | |
5236 | sigrelse (SIGALRM); | |
5237 | #endif /* BSD4_1 */ | |
c8f44005 | 5238 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5239 | longjmp (send_process_frame, 1); |
5240 | } | |
5241 | ||
4556b700 RS |
5242 | /* Send some data to process PROC. |
5243 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5244 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5245 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5246 | |
a92e4183 KH |
5247 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5248 | for encoding before it is sent. | |
1fb0098c GM |
5249 | |
5250 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5251 | |
ff6daed3 | 5252 | static void |
4556b700 | 5253 | send_process (proc, buf, len, object) |
ecd1f654 | 5254 | volatile Lisp_Object proc; |
0daad115 GM |
5255 | unsigned char *volatile buf; |
5256 | volatile int len; | |
5257 | volatile Lisp_Object object; | |
d0d6b7c5 | 5258 | { |
ecd1f654 | 5259 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
2d942bfa | 5260 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5261 | int rv; |
0fa1789e | 5262 | struct coding_system *coding; |
6044e593 | 5263 | struct gcpro gcpro1; |
41c4895c | 5264 | SIGTYPE (*volatile old_sigpipe) (); |
6044e593 RS |
5265 | |
5266 | GCPRO1 (object); | |
d0d6b7c5 | 5267 | |
d0d6b7c5 | 5268 | #ifdef VMS |
d0d6b7c5 JB |
5269 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); |
5270 | #endif /* VMS */ | |
5271 | ||
2d942bfa KS |
5272 | if (! NILP (p->raw_status_low)) |
5273 | update_status (p); | |
5274 | if (! EQ (p->status, Qrun)) | |
5275 | error ("Process %s not running", SDATA (p->name)); | |
5276 | if (XINT (p->outfd) < 0) | |
5277 | error ("Output file descriptor of %s is closed", SDATA (p->name)); | |
0fa1789e | 5278 | |
2d942bfa | 5279 | coding = proc_encode_coding_system[XINT (p->outfd)]; |
486b111b KH |
5280 | Vlast_coding_system_used = coding->symbol; |
5281 | ||
ed7a4b2d KH |
5282 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5283 | || (BUFFERP (object) | |
a92e4183 KH |
5284 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5285 | || EQ (object, Qt)) | |
278bfdd6 | 5286 | { |
2d942bfa | 5287 | if (!EQ (coding->symbol, p->encode_coding_system)) |
278bfdd6 KH |
5288 | /* The coding system for encoding was changed to raw-text |
5289 | because we sent a unibyte text previously. Now we are | |
5290 | sending a multibyte text, thus we must encode it by the | |
2d942bfa KS |
5291 | original coding system specified for the current process. */ |
5292 | setup_coding_system (p->encode_coding_system, coding); | |
fbb70ad9 EZ |
5293 | /* src_multibyte should be set to 1 _after_ a call to |
5294 | setup_coding_system, since it resets src_multibyte to | |
5295 | zero. */ | |
5296 | coding->src_multibyte = 1; | |
278bfdd6 KH |
5297 | } |
5298 | else | |
5299 | { | |
a92e4183 KH |
5300 | /* For sending a unibyte text, character code conversion should |
5301 | not take place but EOL conversion should. So, setup raw-text | |
5302 | or one of the subsidiary if we have not yet done it. */ | |
5303 | if (coding->type != coding_type_raw_text) | |
5304 | { | |
5305 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5306 | { | |
5307 | /* But, before changing the coding, we must flush out data. */ | |
5308 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5309 | send_process (proc, "", 0, Qt); | |
5310 | } | |
5311 | coding->src_multibyte = 0; | |
5312 | setup_raw_text_coding_system (coding); | |
5313 | } | |
278bfdd6 | 5314 | } |
a4a37e65 KH |
5315 | coding->dst_multibyte = 0; |
5316 | ||
ed7a4b2d | 5317 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e KH |
5318 | { |
5319 | int require = encoding_buffer_size (coding, len); | |
0daad115 | 5320 | int from_byte = -1, from = -1, to = -1; |
0fa1789e | 5321 | |
ed7a4b2d | 5322 | if (BUFFERP (object)) |
0fa1789e | 5323 | { |
ed7a4b2d KH |
5324 | from_byte = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5325 | from = buf_bytepos_to_charpos (XBUFFER (object), from_byte); | |
5326 | to = buf_bytepos_to_charpos (XBUFFER (object), from_byte + len); | |
5327 | } | |
5328 | else if (STRINGP (object)) | |
5329 | { | |
d5db4077 | 5330 | from_byte = buf - SDATA (object); |
ed7a4b2d KH |
5331 | from = string_byte_to_char (object, from_byte); |
5332 | to = string_byte_to_char (object, from_byte + len); | |
0fa1789e KH |
5333 | } |
5334 | ||
452294c2 GM |
5335 | if (coding->composing != COMPOSITION_DISABLED) |
5336 | { | |
5337 | if (from_byte >= 0) | |
5338 | coding_save_composition (coding, from, to, object); | |
5339 | else | |
5340 | coding->composing = COMPOSITION_DISABLED; | |
5341 | } | |
ed7a4b2d | 5342 | |
2d942bfa KS |
5343 | if (SBYTES (p->encoding_buf) < require) |
5344 | p->encoding_buf = make_uninit_string (require); | |
ed7a4b2d KH |
5345 | |
5346 | if (from_byte >= 0) | |
5347 | buf = (BUFFERP (object) | |
5348 | ? BUF_BYTE_ADDRESS (XBUFFER (object), from_byte) | |
d5db4077 | 5349 | : SDATA (object) + from_byte); |
0fa1789e | 5350 | |
2d942bfa | 5351 | object = p->encoding_buf; |
d5db4077 KR |
5352 | encode_coding (coding, (char *) buf, SDATA (object), |
5353 | len, SBYTES (object)); | |
9de36315 | 5354 | coding_free_composition_data (coding); |
e7fbaa65 | 5355 | len = coding->produced; |
d5db4077 | 5356 | buf = SDATA (object); |
0fa1789e | 5357 | } |
d0d6b7c5 JB |
5358 | |
5359 | #ifdef VMS | |
5360 | vs = get_vms_process_pointer (p->pid); | |
5361 | if (vs == 0) | |
5362 | error ("Could not find this process: %x", p->pid); | |
5363 | else if (write_to_vms_process (vs, buf, len)) | |
5364 | ; | |
0daad115 | 5365 | #else /* not VMS */ |
4556b700 RS |
5366 | |
5367 | if (pty_max_bytes == 0) | |
5368 | { | |
5369 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
2d942bfa | 5370 | pty_max_bytes = fpathconf (XFASTINT (p->outfd), _PC_MAX_CANON); |
4556b700 RS |
5371 | if (pty_max_bytes < 0) |
5372 | pty_max_bytes = 250; | |
5373 | #else | |
5374 | pty_max_bytes = 250; | |
5375 | #endif | |
5376 | /* Deduct one, to leave space for the eof. */ | |
5377 | pty_max_bytes--; | |
5378 | } | |
5379 | ||
0daad115 GM |
5380 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5381 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5382 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5383 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5384 | { |
5385 | process_sent_to = proc; | |
5386 | while (len > 0) | |
5387 | { | |
5388 | int this = len; | |
93b4f699 | 5389 | |
0daad115 GM |
5390 | /* Decide how much data we can send in one batch. |
5391 | Long lines need to be split into multiple batches. */ | |
2d942bfa | 5392 | if (!NILP (p->pty_flag)) |
0daad115 | 5393 | { |
c0ec53ad SM |
5394 | /* Starting this at zero is always correct when not the first |
5395 | iteration because the previous iteration ended by sending C-d. | |
0daad115 GM |
5396 | It may not be correct for the first iteration |
5397 | if a partial line was sent in a separate send_process call. | |
5398 | If that proves worth handling, we need to save linepos | |
5399 | in the process object. */ | |
5400 | int linepos = 0; | |
5401 | unsigned char *ptr = (unsigned char *) buf; | |
5402 | unsigned char *end = (unsigned char *) buf + len; | |
5403 | ||
5404 | /* Scan through this text for a line that is too long. */ | |
5405 | while (ptr != end && linepos < pty_max_bytes) | |
5406 | { | |
5407 | if (*ptr == '\n') | |
5408 | linepos = 0; | |
5409 | else | |
5410 | linepos++; | |
5411 | ptr++; | |
5412 | } | |
5413 | /* If we found one, break the line there | |
5414 | and put in a C-d to force the buffer through. */ | |
5415 | this = ptr - buf; | |
5416 | } | |
93b4f699 | 5417 | |
0daad115 GM |
5418 | /* Send this batch, using one or more write calls. */ |
5419 | while (this > 0) | |
5420 | { | |
2d942bfa | 5421 | int outfd = XINT (p->outfd); |
0daad115 | 5422 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5423 | #ifdef DATAGRAM_SOCKETS |
5424 | if (DATAGRAM_CHAN_P (outfd)) | |
5425 | { | |
5426 | rv = sendto (outfd, (char *) buf, this, | |
5427 | 0, datagram_address[outfd].sa, | |
5428 | datagram_address[outfd].len); | |
5429 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5430 | { |
5431 | signal (SIGPIPE, old_sigpipe); | |
5432 | report_file_error ("sending datagram", | |
5433 | Fcons (proc, Qnil)); | |
5434 | } | |
e690ca94 KS |
5435 | } |
5436 | else | |
5437 | #endif | |
2d942bfa KS |
5438 | { |
5439 | rv = emacs_write (outfd, (char *) buf, this); | |
5440 | #ifdef ADAPTIVE_READ_BUFFERING | |
5441 | if (XINT (p->read_output_delay) > 0 | |
5442 | && EQ (p->adaptive_read_buffering, Qt)) | |
5443 | { | |
5444 | XSETFASTINT (p->read_output_delay, 0); | |
5445 | process_output_delay_count--; | |
5446 | p->read_output_skip = Qnil; | |
5447 | } | |
5448 | #endif | |
5449 | } | |
0daad115 | 5450 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5451 | |
0daad115 GM |
5452 | if (rv < 0) |
5453 | { | |
5454 | if (0 | |
d0d6b7c5 | 5455 | #ifdef EWOULDBLOCK |
0daad115 | 5456 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5457 | #endif |
5458 | #ifdef EAGAIN | |
0daad115 | 5459 | || errno == EAGAIN |
d0d6b7c5 | 5460 | #endif |
0daad115 | 5461 | ) |
177c0ea7 | 5462 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5463 | that may allow the program |
5464 | to finish doing output and read more. */ | |
5465 | { | |
0daad115 | 5466 | int offset = 0; |
4556b700 | 5467 | |
3433b6bd | 5468 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5469 | /* A gross hack to work around a bug in FreeBSD. |
5470 | In the following sequence, read(2) returns | |
5471 | bogus data: | |
5472 | ||
5473 | write(2) 1022 bytes | |
5474 | write(2) 954 bytes, get EAGAIN | |
5475 | read(2) 1024 bytes in process_read_output | |
5476 | read(2) 11 bytes in process_read_output | |
5477 | ||
5478 | That is, read(2) returns more bytes than have | |
5479 | ever been written successfully. The 1033 bytes | |
5480 | read are the 1022 bytes written successfully | |
5481 | after processing (for example with CRs added if | |
5482 | the terminal is set up that way which it is | |
5483 | here). The same bytes will be seen again in a | |
5484 | later read(2), without the CRs. */ | |
177c0ea7 | 5485 | |
0daad115 GM |
5486 | if (errno == EAGAIN) |
5487 | { | |
5488 | int flags = FWRITE; | |
2d942bfa | 5489 | ioctl (XINT (p->outfd), TIOCFLUSH, &flags); |
0daad115 | 5490 | } |
3433b6bd | 5491 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5492 | |
0daad115 GM |
5493 | /* Running filters might relocate buffers or strings. |
5494 | Arrange to relocate BUF. */ | |
5495 | if (BUFFERP (object)) | |
5496 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); | |
5497 | else if (STRINGP (object)) | |
d5db4077 | 5498 | offset = buf - SDATA (object); |
0daad115 | 5499 | |
f3e6605c | 5500 | #ifdef EMACS_HAS_USECS |
214d6069 | 5501 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5502 | #else |
214d6069 | 5503 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5504 | #endif |
4556b700 | 5505 | |
0daad115 GM |
5506 | if (BUFFERP (object)) |
5507 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); | |
5508 | else if (STRINGP (object)) | |
d5db4077 | 5509 | buf = offset + SDATA (object); |
4556b700 | 5510 | |
0daad115 GM |
5511 | rv = 0; |
5512 | } | |
5513 | else | |
5514 | /* This is a real error. */ | |
5515 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5516 | } | |
5517 | buf += rv; | |
5518 | len -= rv; | |
5519 | this -= rv; | |
5520 | } | |
f76475ad | 5521 | |
0daad115 GM |
5522 | /* If we sent just part of the string, put in an EOF |
5523 | to force it through, before we send the rest. */ | |
5524 | if (len > 0) | |
5525 | Fprocess_send_eof (proc); | |
5526 | } | |
5527 | } | |
5528 | #endif /* not VMS */ | |
d0d6b7c5 JB |
5529 | else |
5530 | { | |
0ff69270 | 5531 | signal (SIGPIPE, old_sigpipe); |
0daad115 GM |
5532 | #ifndef VMS |
5533 | proc = process_sent_to; | |
2d942bfa | 5534 | p = XPROCESS (proc); |
0daad115 | 5535 | #endif |
2d942bfa KS |
5536 | p->raw_status_low = Qnil; |
5537 | p->raw_status_high = Qnil; | |
5538 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5539 | XSETINT (p->tick, ++process_tick); | |
d0d6b7c5 JB |
5540 | deactivate_process (proc); |
5541 | #ifdef VMS | |
2d942bfa | 5542 | error ("Error writing to process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5543 | #else |
2d942bfa | 5544 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5545 | #endif |
5546 | } | |
6044e593 RS |
5547 | |
5548 | UNGCPRO; | |
d0d6b7c5 JB |
5549 | } |
5550 | ||
5551 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5552 | 3, 3, 0, |
5553 | doc: /* Send current contents of region as input to PROCESS. | |
5554 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5555 | nil, indicating the current buffer's process. | |
5556 | Called from program, takes three arguments, PROCESS, START and END. | |
5557 | If the region is more than 500 characters long, | |
5558 | it is sent in several bunches. This may happen even for shorter regions. | |
5559 | Output from processes can arrive in between bunches. */) | |
5560 | (process, start, end) | |
d0d6b7c5 JB |
5561 | Lisp_Object process, start, end; |
5562 | { | |
5563 | Lisp_Object proc; | |
d8a2934e | 5564 | int start1, end1; |
d0d6b7c5 JB |
5565 | |
5566 | proc = get_process (process); | |
5567 | validate_region (&start, &end); | |
5568 | ||
5569 | if (XINT (start) < GPT && XINT (end) > GPT) | |
4da6dec8 | 5570 | move_gap (XINT (start)); |
d0d6b7c5 | 5571 | |
d8a2934e RS |
5572 | start1 = CHAR_TO_BYTE (XINT (start)); |
5573 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5574 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
4556b700 | 5575 | Fcurrent_buffer ()); |
d0d6b7c5 JB |
5576 | |
5577 | return Qnil; | |
5578 | } | |
5579 | ||
5580 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5581 | 2, 2, 0, |
5582 | doc: /* Send PROCESS the contents of STRING as input. | |
5583 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5584 | nil, indicating the current buffer's process. | |
5585 | If STRING is more than 500 characters long, | |
5586 | it is sent in several bunches. This may happen even for shorter strings. | |
5587 | Output from processes can arrive in between bunches. */) | |
5588 | (process, string) | |
d0d6b7c5 JB |
5589 | Lisp_Object process, string; |
5590 | { | |
5591 | Lisp_Object proc; | |
b7826503 | 5592 | CHECK_STRING (string); |
d0d6b7c5 | 5593 | proc = get_process (process); |
d5db4077 KR |
5594 | send_process (proc, SDATA (string), |
5595 | SBYTES (string), string); | |
d0d6b7c5 JB |
5596 | return Qnil; |
5597 | } | |
5598 | \f | |
16782258 JD |
5599 | /* Return the foreground process group for the tty/pty that |
5600 | the process P uses. */ | |
5601 | static int | |
5602 | emacs_get_tty_pgrp (p) | |
5603 | struct Lisp_Process *p; | |
5604 | { | |
5605 | int gid = -1; | |
5606 | ||
f3d9532b | 5607 | #ifdef TIOCGPGRP |
16782258 JD |
5608 | if (ioctl (XINT (p->infd), TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
5609 | { | |
5610 | int fd; | |
5611 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5612 | master side. Try the slave side. */ | |
5613 | fd = emacs_open (XSTRING (p->tty_name)->data, O_RDONLY, 0); | |
5614 | ||
5615 | if (fd != -1) | |
5616 | { | |
5617 | ioctl (fd, TIOCGPGRP, &gid); | |
5618 | emacs_close (fd); | |
5619 | } | |
5620 | } | |
5621 | #endif /* defined (TIOCGPGRP ) */ | |
5622 | ||
5623 | return gid; | |
5624 | } | |
5625 | ||
b81ea5ef RS |
5626 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5627 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5628 | doc: /* Return t if PROCESS has given the terminal to a child. |
5629 | If the operating system does not make it possible to find out, | |
5630 | return t unconditionally. */) | |
5631 | (process) | |
b81ea5ef RS |
5632 | Lisp_Object process; |
5633 | { | |
5634 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5635 | in a way that will cause returning t. */ | |
16782258 | 5636 | int gid; |
b81ea5ef RS |
5637 | Lisp_Object proc; |
5638 | struct Lisp_Process *p; | |
5639 | ||
5640 | proc = get_process (process); | |
5641 | p = XPROCESS (proc); | |
5642 | ||
5643 | if (!EQ (p->childp, Qt)) | |
5644 | error ("Process %s is not a subprocess", | |
d5db4077 | 5645 | SDATA (p->name)); |
b81ea5ef RS |
5646 | if (XINT (p->infd) < 0) |
5647 | error ("Process %s is not active", | |
d5db4077 | 5648 | SDATA (p->name)); |
b81ea5ef | 5649 | |
16782258 | 5650 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef RS |
5651 | |
5652 | if (gid == XFASTINT (p->pid)) | |
5653 | return Qnil; | |
5654 | return Qt; | |
5655 | } | |
5656 | \f | |
d0d6b7c5 | 5657 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5658 | If CURRENT_GROUP is t, that means send to the process group |
5659 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5660 | This is used for various commands in shell mode. |
b81ea5ef RS |
5661 | If CURRENT_GROUP is lambda, that means send to the process group |
5662 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5663 | ||
d0d6b7c5 | 5664 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5665 | right away. |
5666 | ||
5667 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5668 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5669 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5670 | |
f9738840 | 5671 | static void |
d0d6b7c5 JB |
5672 | process_send_signal (process, signo, current_group, nomsg) |
5673 | Lisp_Object process; | |
5674 | int signo; | |
5675 | Lisp_Object current_group; | |
5676 | int nomsg; | |
5677 | { | |
5678 | Lisp_Object proc; | |
5679 | register struct Lisp_Process *p; | |
5680 | int gid; | |
5681 | int no_pgrp = 0; | |
5682 | ||
5683 | proc = get_process (process); | |
5684 | p = XPROCESS (proc); | |
5685 | ||
5686 | if (!EQ (p->childp, Qt)) | |
5687 | error ("Process %s is not a subprocess", | |
d5db4077 | 5688 | SDATA (p->name)); |
a9f2c884 | 5689 | if (XINT (p->infd) < 0) |
d0d6b7c5 | 5690 | error ("Process %s is not active", |
d5db4077 | 5691 | SDATA (p->name)); |
d0d6b7c5 JB |
5692 | |
5693 | if (NILP (p->pty_flag)) | |
5694 | current_group = Qnil; | |
5695 | ||
d0d6b7c5 | 5696 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5697 | if (NILP (current_group)) |
5698 | /* Send the signal to the shell's process group. */ | |
5699 | gid = XFASTINT (p->pid); | |
5700 | else | |
d0d6b7c5 | 5701 | { |
b0310da4 | 5702 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5703 | /* If possible, send signals to the entire pgrp |
5704 | by sending an input character to it. */ | |
b0310da4 | 5705 | |
6be429b1 JB |
5706 | /* TERMIOS is the latest and bestest, and seems most likely to |
5707 | work. If the system has it, use it. */ | |
5708 | #ifdef HAVE_TERMIOS | |
5709 | struct termios t; | |
7f916a36 RS |
5710 | cc_t *sig_char = NULL; |
5711 | ||
5712 | tcgetattr (XINT (p->infd), &t); | |
6be429b1 JB |
5713 | |
5714 | switch (signo) | |
5715 | { | |
5716 | case SIGINT: | |
7f916a36 RS |
5717 | sig_char = &t.c_cc[VINTR]; |
5718 | break; | |
6be429b1 JB |
5719 | |
5720 | case SIGQUIT: | |
7f916a36 RS |
5721 | sig_char = &t.c_cc[VQUIT]; |
5722 | break; | |
6be429b1 JB |
5723 | |
5724 | case SIGTSTP: | |
d0adf46f | 5725 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5726 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5727 | #else |
7f916a36 | 5728 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5729 | #endif |
7f916a36 | 5730 | break; |
6be429b1 JB |
5731 | } |
5732 | ||
ca4313d5 | 5733 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5734 | { |
5735 | send_process (proc, sig_char, 1, Qnil); | |
5736 | return; | |
5737 | } | |
5738 | /* If we can't send the signal with a character, | |
5739 | fall through and send it another way. */ | |
6be429b1 JB |
5740 | #else /* ! HAVE_TERMIOS */ |
5741 | ||
b0310da4 JB |
5742 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5743 | current control characters. */ | |
d0d6b7c5 | 5744 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5745 | |
d0d6b7c5 JB |
5746 | struct tchars c; |
5747 | struct ltchars lc; | |
5748 | ||
5749 | switch (signo) | |
5750 | { | |
5751 | case SIGINT: | |
a9f2c884 | 5752 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5753 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 5754 | return; |
d0d6b7c5 | 5755 | case SIGQUIT: |
a9f2c884 | 5756 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5757 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 5758 | return; |
0ad77c54 | 5759 | #ifdef SIGTSTP |
d0d6b7c5 | 5760 | case SIGTSTP: |
a9f2c884 | 5761 | ioctl (XINT (p->infd), TIOCGLTC, &lc); |
4556b700 | 5762 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 5763 | return; |
b0310da4 | 5764 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5765 | } |
b0310da4 JB |
5766 | |
5767 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
5768 | ||
5769 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
5770 | characters. */ | |
5771 | #ifdef TCGETA | |
d0d6b7c5 JB |
5772 | struct termio t; |
5773 | switch (signo) | |
5774 | { | |
5775 | case SIGINT: | |
a9f2c884 | 5776 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5777 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 5778 | return; |
d0d6b7c5 | 5779 | case SIGQUIT: |
a9f2c884 | 5780 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5781 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 5782 | return; |
7d79e3b4 | 5783 | #ifdef SIGTSTP |
d0d6b7c5 | 5784 | case SIGTSTP: |
a9f2c884 | 5785 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5786 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 5787 | return; |
b0310da4 | 5788 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5789 | } |
b0310da4 JB |
5790 | #else /* ! defined (TCGETA) */ |
5791 | Your configuration files are messed up. | |
5792 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
5793 | you'd better be using one of the alternatives above! */ | |
5794 | #endif /* ! defined (TCGETA) */ | |
5795 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
f1c206fc | 5796 | /* In this case, the code above should alway returns. */ |
20505336 | 5797 | abort (); |
f1c206fc RS |
5798 | #endif /* ! defined HAVE_TERMIOS */ |
5799 | ||
5800 | /* The code above may fall through if it can't | |
5801 | handle the signal. */ | |
20505336 | 5802 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5803 | |
177c0ea7 | 5804 | #ifdef TIOCGPGRP |
2af70a0c | 5805 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5806 | Otherwise, use the pty to get the pgrp. |
5807 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5808 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5809 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5810 | His patch indicates that if TIOCGPGRP returns an error, then |
5811 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5812 | |
16782258 | 5813 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5814 | |
16782258 JD |
5815 | if (gid == -1) |
5816 | /* If we can't get the information, assume | |
5817 | the shell owns the tty. */ | |
5818 | gid = XFASTINT (p->pid); | |
2af70a0c RS |
5819 | |
5820 | /* It is not clear whether anything really can set GID to -1. | |
5821 | Perhaps on some system one of those ioctls can or could do so. | |
5822 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5823 | if (gid == -1) |
5824 | no_pgrp = 1; | |
b0310da4 | 5825 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5826 | /* Can't select pgrps on this system, so we know that |
5827 | the child itself heads the pgrp. */ | |
2af70a0c | 5828 | gid = XFASTINT (p->pid); |
301c3fe4 | 5829 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5830 | |
5831 | /* If current_group is lambda, and the shell owns the terminal, | |
5832 | don't send any signal. */ | |
2af70a0c | 5833 | if (EQ (current_group, Qlambda) && gid == XFASTINT (p->pid)) |
b81ea5ef | 5834 | return; |
d0d6b7c5 | 5835 | } |
d0d6b7c5 JB |
5836 | |
5837 | switch (signo) | |
5838 | { | |
5839 | #ifdef SIGCONT | |
5840 | case SIGCONT: | |
5841 | p->raw_status_low = Qnil; | |
5842 | p->raw_status_high = Qnil; | |
5843 | p->status = Qrun; | |
5844 | XSETINT (p->tick, ++process_tick); | |
5845 | if (!nomsg) | |
ff6daed3 | 5846 | status_notify (NULL); |
d0d6b7c5 | 5847 | break; |
301c3fe4 | 5848 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 JB |
5849 | case SIGINT: |
5850 | #ifdef VMS | |
4556b700 | 5851 | send_process (proc, "\003", 1, Qnil); /* ^C */ |
d0d6b7c5 JB |
5852 | goto whoosh; |
5853 | #endif | |
5854 | case SIGQUIT: | |
5855 | #ifdef VMS | |
4556b700 | 5856 | send_process (proc, "\031", 1, Qnil); /* ^Y */ |
d0d6b7c5 JB |
5857 | goto whoosh; |
5858 | #endif | |
5859 | case SIGKILL: | |
5860 | #ifdef VMS | |
5861 | sys$forcex (&(XFASTINT (p->pid)), 0, 1); | |
5862 | whoosh: | |
5863 | #endif | |
a9f2c884 | 5864 | flush_pending_output (XINT (p->infd)); |
d0d6b7c5 JB |
5865 | break; |
5866 | } | |
5867 | ||
5868 | /* If we don't have process groups, send the signal to the immediate | |
5869 | subprocess. That isn't really right, but it's better than any | |
5870 | obvious alternative. */ | |
5871 | if (no_pgrp) | |
5872 | { | |
5873 | kill (XFASTINT (p->pid), signo); | |
5874 | return; | |
5875 | } | |
5876 | ||
5877 | /* gid may be a pid, or minus a pgrp's number */ | |
5878 | #ifdef TIOCSIGSEND | |
5879 | if (!NILP (current_group)) | |
16782258 JD |
5880 | { |
5881 | if (ioctl (XINT (p->infd), TIOCSIGSEND, signo) == -1) | |
5882 | EMACS_KILLPG (gid, signo); | |
5883 | } | |
d0d6b7c5 JB |
5884 | else |
5885 | { | |
5886 | gid = - XFASTINT (p->pid); | |
5887 | kill (gid, signo); | |
5888 | } | |
301c3fe4 | 5889 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5890 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5891 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5892 | } |
5893 | ||
5894 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5895 | doc: /* Interrupt process PROCESS. |
5896 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5897 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5898 | Second arg CURRENT-GROUP non-nil means send signal to |
5899 | the current process-group of the process's controlling terminal | |
5900 | rather than to the process's own process group. | |
5901 | If the process is a shell, this means interrupt current subjob | |
5902 | rather than the shell. | |
5903 | ||
5904 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5905 | don't send the signal. */) | |
5906 | (process, current_group) | |
d0d6b7c5 JB |
5907 | Lisp_Object process, current_group; |
5908 | { | |
5909 | process_send_signal (process, SIGINT, current_group, 0); | |
5910 | return process; | |
5911 | } | |
5912 | ||
5913 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5914 | doc: /* Kill process PROCESS. May be process or name of one. |
5915 | See function `interrupt-process' for more details on usage. */) | |
5916 | (process, current_group) | |
d0d6b7c5 JB |
5917 | Lisp_Object process, current_group; |
5918 | { | |
5919 | process_send_signal (process, SIGKILL, current_group, 0); | |
5920 | return process; | |
5921 | } | |
5922 | ||
5923 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5924 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5925 | See function `interrupt-process' for more details on usage. */) | |
5926 | (process, current_group) | |
d0d6b7c5 JB |
5927 | Lisp_Object process, current_group; |
5928 | { | |
5929 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5930 | return process; | |
5931 | } | |
5932 | ||
5933 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5934 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5935 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5936 | If PROCESS is a network process, inhibit handling of incoming traffic. */) |
fdb82f93 | 5937 | (process, current_group) |
d0d6b7c5 JB |
5938 | Lisp_Object process, current_group; |
5939 | { | |
e690ca94 KS |
5940 | #ifdef HAVE_SOCKETS |
5941 | if (PROCESSP (process) && NETCONN_P (process)) | |
5942 | { | |
5943 | struct Lisp_Process *p; | |
177c0ea7 | 5944 | |
e690ca94 KS |
5945 | p = XPROCESS (process); |
5946 | if (NILP (p->command) | |
5947 | && XINT (p->infd) >= 0) | |
5948 | { | |
5949 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
5950 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
5951 | } | |
5952 | p->command = Qt; | |
5953 | return process; | |
5954 | } | |
5955 | #endif | |
d0d6b7c5 | 5956 | #ifndef SIGTSTP |
a9a73d6c | 5957 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
5958 | #else |
5959 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5960 | #endif | |
5961 | return process; | |
5962 | } | |
5963 | ||
5964 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5965 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5966 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5967 | If PROCESS is a network process, resume handling of incoming traffic. */) |
fdb82f93 | 5968 | (process, current_group) |
d0d6b7c5 JB |
5969 | Lisp_Object process, current_group; |
5970 | { | |
e690ca94 KS |
5971 | #ifdef HAVE_SOCKETS |
5972 | if (PROCESSP (process) && NETCONN_P (process)) | |
5973 | { | |
5974 | struct Lisp_Process *p; | |
5975 | ||
5976 | p = XPROCESS (process); | |
5977 | if (EQ (p->command, Qt) | |
5978 | && XINT (p->infd) >= 0 | |
5979 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) | |
5980 | { | |
5981 | FD_SET (XINT (p->infd), &input_wait_mask); | |
5982 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
5983 | } | |
5984 | p->command = Qnil; | |
5985 | return process; | |
5986 | } | |
5987 | #endif | |
d0d6b7c5 JB |
5988 | #ifdef SIGCONT |
5989 | process_send_signal (process, SIGCONT, current_group, 0); | |
5990 | #else | |
a9a73d6c | 5991 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
5992 | #endif |
5993 | return process; | |
5994 | } | |
5995 | ||
5996 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
5997 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
5998 | doc: /* Send PROCESS the signal with code SIGCODE. | |
5999 | PROCESS may also be an integer specifying the process id of the | |
6000 | process to signal; in this case, the process need not be a child of | |
6001 | this Emacs. | |
fdb82f93 | 6002 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
6003 | (process, sigcode) |
6004 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 6005 | { |
cdd5ea86 KS |
6006 | Lisp_Object pid; |
6007 | ||
6008 | if (INTEGERP (process)) | |
6009 | { | |
6010 | pid = process; | |
6011 | goto got_it; | |
6012 | } | |
6013 | ||
6014 | if (STRINGP (process)) | |
6015 | { | |
6016 | Lisp_Object tem; | |
6017 | if (tem = Fget_process (process), NILP (tem)) | |
6018 | { | |
6019 | pid = Fstring_to_number (process, make_number (10)); | |
6020 | if (XINT (pid) != 0) | |
6021 | goto got_it; | |
6022 | } | |
6023 | process = tem; | |
6024 | } | |
6025 | else | |
6026 | process = get_process (process); | |
177c0ea7 | 6027 | |
cdd5ea86 KS |
6028 | if (NILP (process)) |
6029 | return process; | |
6030 | ||
6031 | CHECK_PROCESS (process); | |
6032 | pid = XPROCESS (process)->pid; | |
6033 | if (!INTEGERP (pid) || XINT (pid) <= 0) | |
6034 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); | |
6035 | ||
6036 | got_it: | |
4766242d RS |
6037 | |
6038 | #define handle_signal(NAME, VALUE) \ | |
6039 | else if (!strcmp (name, NAME)) \ | |
6040 | XSETINT (sigcode, VALUE) | |
6041 | ||
6042 | if (INTEGERP (sigcode)) | |
6043 | ; | |
6044 | else | |
6045 | { | |
6046 | unsigned char *name; | |
6047 | ||
b7826503 | 6048 | CHECK_SYMBOL (sigcode); |
d5db4077 | 6049 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6050 | |
675984ed KS |
6051 | if (!strncmp(name, "SIG", 3)) |
6052 | name += 3; | |
6053 | ||
4766242d RS |
6054 | if (0) |
6055 | ; | |
6056 | #ifdef SIGHUP | |
675984ed | 6057 | handle_signal ("HUP", SIGHUP); |
4766242d RS |
6058 | #endif |
6059 | #ifdef SIGINT | |
675984ed | 6060 | handle_signal ("INT", SIGINT); |
4766242d RS |
6061 | #endif |
6062 | #ifdef SIGQUIT | |
675984ed | 6063 | handle_signal ("QUIT", SIGQUIT); |
4766242d RS |
6064 | #endif |
6065 | #ifdef SIGILL | |
675984ed | 6066 | handle_signal ("ILL", SIGILL); |
4766242d RS |
6067 | #endif |
6068 | #ifdef SIGABRT | |
675984ed | 6069 | handle_signal ("ABRT", SIGABRT); |
4766242d RS |
6070 | #endif |
6071 | #ifdef SIGEMT | |
675984ed | 6072 | handle_signal ("EMT", SIGEMT); |
4766242d RS |
6073 | #endif |
6074 | #ifdef SIGKILL | |
675984ed | 6075 | handle_signal ("KILL", SIGKILL); |
4766242d RS |
6076 | #endif |
6077 | #ifdef SIGFPE | |
675984ed | 6078 | handle_signal ("FPE", SIGFPE); |
4766242d RS |
6079 | #endif |
6080 | #ifdef SIGBUS | |
675984ed | 6081 | handle_signal ("BUS", SIGBUS); |
4766242d RS |
6082 | #endif |
6083 | #ifdef SIGSEGV | |
675984ed | 6084 | handle_signal ("SEGV", SIGSEGV); |
4766242d RS |
6085 | #endif |
6086 | #ifdef SIGSYS | |
675984ed | 6087 | handle_signal ("SYS", SIGSYS); |
4766242d RS |
6088 | #endif |
6089 | #ifdef SIGPIPE | |
675984ed | 6090 | handle_signal ("PIPE", SIGPIPE); |
4766242d RS |
6091 | #endif |
6092 | #ifdef SIGALRM | |
675984ed | 6093 | handle_signal ("ALRM", SIGALRM); |
4766242d RS |
6094 | #endif |
6095 | #ifdef SIGTERM | |
675984ed | 6096 | handle_signal ("TERM", SIGTERM); |
4766242d RS |
6097 | #endif |
6098 | #ifdef SIGURG | |
675984ed | 6099 | handle_signal ("URG", SIGURG); |
4766242d RS |
6100 | #endif |
6101 | #ifdef SIGSTOP | |
675984ed | 6102 | handle_signal ("STOP", SIGSTOP); |
4766242d RS |
6103 | #endif |
6104 | #ifdef SIGTSTP | |
675984ed | 6105 | handle_signal ("TSTP", SIGTSTP); |
4766242d RS |
6106 | #endif |
6107 | #ifdef SIGCONT | |
675984ed | 6108 | handle_signal ("CONT", SIGCONT); |
4766242d RS |
6109 | #endif |
6110 | #ifdef SIGCHLD | |
675984ed | 6111 | handle_signal ("CHLD", SIGCHLD); |
4766242d RS |
6112 | #endif |
6113 | #ifdef SIGTTIN | |
675984ed | 6114 | handle_signal ("TTIN", SIGTTIN); |
4766242d RS |
6115 | #endif |
6116 | #ifdef SIGTTOU | |
675984ed | 6117 | handle_signal ("TTOU", SIGTTOU); |
4766242d RS |
6118 | #endif |
6119 | #ifdef SIGIO | |
675984ed | 6120 | handle_signal ("IO", SIGIO); |
4766242d RS |
6121 | #endif |
6122 | #ifdef SIGXCPU | |
675984ed | 6123 | handle_signal ("XCPU", SIGXCPU); |
4766242d RS |
6124 | #endif |
6125 | #ifdef SIGXFSZ | |
675984ed | 6126 | handle_signal ("XFSZ", SIGXFSZ); |
4766242d RS |
6127 | #endif |
6128 | #ifdef SIGVTALRM | |
675984ed | 6129 | handle_signal ("VTALRM", SIGVTALRM); |
4766242d RS |
6130 | #endif |
6131 | #ifdef SIGPROF | |
675984ed | 6132 | handle_signal ("PROF", SIGPROF); |
4766242d RS |
6133 | #endif |
6134 | #ifdef SIGWINCH | |
675984ed | 6135 | handle_signal ("WINCH", SIGWINCH); |
4766242d RS |
6136 | #endif |
6137 | #ifdef SIGINFO | |
675984ed | 6138 | handle_signal ("INFO", SIGINFO); |
4766242d RS |
6139 | #endif |
6140 | #ifdef SIGUSR1 | |
675984ed | 6141 | handle_signal ("USR1", SIGUSR1); |
4766242d RS |
6142 | #endif |
6143 | #ifdef SIGUSR2 | |
675984ed | 6144 | handle_signal ("USR2", SIGUSR2); |
4766242d RS |
6145 | #endif |
6146 | else | |
9fa195a2 | 6147 | error ("Undefined signal name %s", name); |
4766242d RS |
6148 | } |
6149 | ||
6150 | #undef handle_signal | |
6151 | ||
4766242d | 6152 | return make_number (kill (XINT (pid), XINT (sigcode))); |
d0d6b7c5 JB |
6153 | } |
6154 | ||
6155 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6156 | doc: /* Make PROCESS see end-of-file in its input. |
6157 | EOF comes after any text already sent to it. | |
6158 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6159 | nil, indicating the current buffer's process. | |
6160 | If PROCESS is a network connection, or is a process communicating | |
6161 | through a pipe (as opposed to a pty), then you cannot send any more | |
6162 | text to PROCESS after you call this function. */) | |
6163 | (process) | |
d0d6b7c5 JB |
6164 | Lisp_Object process; |
6165 | { | |
6166 | Lisp_Object proc; | |
de7fbd09 | 6167 | struct coding_system *coding; |
d0d6b7c5 | 6168 | |
e690ca94 KS |
6169 | if (DATAGRAM_CONN_P (process)) |
6170 | return process; | |
6171 | ||
d0d6b7c5 | 6172 | proc = get_process (process); |
de7fbd09 | 6173 | coding = proc_encode_coding_system[XINT (XPROCESS (proc)->outfd)]; |
577d03d5 RS |
6174 | |
6175 | /* Make sure the process is really alive. */ | |
6176 | if (! NILP (XPROCESS (proc)->raw_status_low)) | |
6177 | update_status (XPROCESS (proc)); | |
6178 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6179 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6180 | |
de7fbd09 KH |
6181 | if (CODING_REQUIRE_FLUSHING (coding)) |
6182 | { | |
6183 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6184 | send_process (proc, "", 0, Qnil); | |
6185 | } | |
6186 | ||
d0d6b7c5 | 6187 | #ifdef VMS |
4556b700 | 6188 | send_process (proc, "\032", 1, Qnil); /* ^z */ |
d0d6b7c5 JB |
6189 | #else |
6190 | if (!NILP (XPROCESS (proc)->pty_flag)) | |
4556b700 | 6191 | send_process (proc, "\004", 1, Qnil); |
d0d6b7c5 JB |
6192 | else |
6193 | { | |
4525f571 RS |
6194 | int old_outfd, new_outfd; |
6195 | ||
93853f3d | 6196 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6197 | /* If this is a network connection, or socketpair is used |
6198 | for communication with the subprocess, call shutdown to cause EOF. | |
6199 | (In some old system, shutdown to socketpair doesn't work. | |
6200 | Then we just can't win.) */ | |
6201 | if (NILP (XPROCESS (proc)->pid) | |
6202 | || XINT (XPROCESS (proc)->outfd) == XINT (XPROCESS (proc)->infd)) | |
6203 | shutdown (XINT (XPROCESS (proc)->outfd), 1); | |
6204 | /* In case of socketpair, outfd == infd, so don't close it. */ | |
6205 | if (XINT (XPROCESS (proc)->outfd) != XINT (XPROCESS (proc)->infd)) | |
68c45bf0 | 6206 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6207 | #else /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6208 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6209 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6210 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
4525f571 RS |
6211 | old_outfd = XINT (XPROCESS (proc)->outfd); |
6212 | ||
6213 | if (!proc_encode_coding_system[new_outfd]) | |
6214 | proc_encode_coding_system[new_outfd] | |
6215 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6216 | bcopy (proc_encode_coding_system[old_outfd], | |
6217 | proc_encode_coding_system[new_outfd], | |
6218 | sizeof (struct coding_system)); | |
6219 | bzero (proc_encode_coding_system[old_outfd], | |
6220 | sizeof (struct coding_system)); | |
6221 | ||
6222 | XSETINT (XPROCESS (proc)->outfd, new_outfd); | |
d0d6b7c5 JB |
6223 | } |
6224 | #endif /* VMS */ | |
d0d6b7c5 JB |
6225 | return process; |
6226 | } | |
6227 | ||
6228 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 6229 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 6230 | |
6b53bb85 | 6231 | void |
d0d6b7c5 JB |
6232 | kill_buffer_processes (buffer) |
6233 | Lisp_Object buffer; | |
6234 | { | |
6235 | Lisp_Object tail, proc; | |
6236 | ||
70949dac | 6237 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6238 | { |
70949dac | 6239 | proc = XCDR (XCAR (tail)); |
b5b502d6 | 6240 | if (GC_PROCESSP (proc) |
d0d6b7c5 JB |
6241 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
6242 | { | |
6243 | if (NETCONN_P (proc)) | |
e1ab4959 | 6244 | Fdelete_process (proc); |
a9f2c884 | 6245 | else if (XINT (XPROCESS (proc)->infd) >= 0) |
d0d6b7c5 JB |
6246 | process_send_signal (proc, SIGHUP, Qnil, 1); |
6247 | } | |
6248 | } | |
6249 | } | |
6250 | \f | |
3fed8ad5 GM |
6251 | /* On receipt of a signal that a child status has changed, loop asking |
6252 | about children with changed statuses until the system says there | |
6253 | are no more. | |
177c0ea7 | 6254 | |
3fed8ad5 GM |
6255 | All we do is change the status; we do not run sentinels or print |
6256 | notifications. That is saved for the next time keyboard input is | |
6257 | done, in order to avoid timing errors. | |
6258 | ||
6259 | ** WARNING: this can be called during garbage collection. | |
6260 | Therefore, it must not be fooled by the presence of mark bits in | |
6261 | Lisp objects. | |
6262 | ||
6263 | ** USG WARNING: Although it is not obvious from the documentation | |
6264 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6265 | signal() before executing at least one wait(), otherwise the | |
6266 | handler will be called again, resulting in an infinite loop. The | |
6267 | relevant portion of the documentation reads "SIGCLD signals will be | |
6268 | queued and the signal-catching function will be continually | |
6269 | reentered until the queue is empty". Invoking signal() causes the | |
6270 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
ce38070a JD |
6271 | Inc. |
6272 | ||
6273 | ** Malloc WARNING: This should never call malloc either directly or | |
6274 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 JB |
6275 | |
6276 | SIGTYPE | |
6277 | sigchld_handler (signo) | |
6278 | int signo; | |
6279 | { | |
6280 | int old_errno = errno; | |
6281 | Lisp_Object proc; | |
6282 | register struct Lisp_Process *p; | |
6be429b1 | 6283 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 | 6284 | |
333f1b6f JD |
6285 | SIGNAL_THREAD_CHECK (signo); |
6286 | ||
d0d6b7c5 JB |
6287 | #ifdef BSD4_1 |
6288 | extern int sigheld; | |
6289 | sigheld |= sigbit (SIGCHLD); | |
6290 | #endif | |
6291 | ||
6292 | while (1) | |
6293 | { | |
6294 | register int pid; | |
6295 | WAITTYPE w; | |
6296 | Lisp_Object tail; | |
6297 | ||
6298 | #ifdef WNOHANG | |
6299 | #ifndef WUNTRACED | |
6300 | #define WUNTRACED 0 | |
6301 | #endif /* no WUNTRACED */ | |
6302 | /* Keep trying to get a status until we get a definitive result. */ | |
177c0ea7 | 6303 | do |
d0d6b7c5 JB |
6304 | { |
6305 | errno = 0; | |
6306 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
6307 | } | |
3fed8ad5 | 6308 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6309 | |
6310 | if (pid <= 0) | |
6311 | { | |
3fed8ad5 GM |
6312 | /* PID == 0 means no processes found, PID == -1 means a real |
6313 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6314 | |
6315 | /* USG systems forget handlers when they are used; | |
6316 | must reestablish each time */ | |
3c0ee47b | 6317 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6318 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
6319 | #endif | |
6320 | #ifdef BSD4_1 | |
6321 | sigheld &= ~sigbit (SIGCHLD); | |
6322 | sigrelse (SIGCHLD); | |
6323 | #endif | |
6324 | errno = old_errno; | |
6325 | return; | |
6326 | } | |
6327 | #else | |
6328 | pid = wait (&w); | |
6329 | #endif /* no WNOHANG */ | |
6330 | ||
6331 | /* Find the process that signaled us, and record its status. */ | |
6332 | ||
6333 | p = 0; | |
3fed8ad5 | 6334 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6335 | { |
70949dac | 6336 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6337 | p = XPROCESS (proc); |
3fed8ad5 | 6338 | if (GC_EQ (p->childp, Qt) && XINT (p->pid) == pid) |
d0d6b7c5 JB |
6339 | break; |
6340 | p = 0; | |
6341 | } | |
6342 | ||
6343 | /* Look for an asynchronous process whose pid hasn't been filled | |
6344 | in yet. */ | |
6345 | if (p == 0) | |
3fed8ad5 | 6346 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6347 | { |
70949dac | 6348 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6349 | p = XPROCESS (proc); |
3fed8ad5 | 6350 | if (GC_INTEGERP (p->pid) && XINT (p->pid) == -1) |
d0d6b7c5 JB |
6351 | break; |
6352 | p = 0; | |
6353 | } | |
177c0ea7 | 6354 | |
d0d6b7c5 JB |
6355 | /* Change the status of the process that was found. */ |
6356 | if (p != 0) | |
6357 | { | |
6358 | union { int i; WAITTYPE wt; } u; | |
e98d950b | 6359 | int clear_desc_flag = 0; |
177c0ea7 | 6360 | |
d0d6b7c5 JB |
6361 | XSETINT (p->tick, ++process_tick); |
6362 | u.wt = w; | |
5fc0154c RS |
6363 | XSETINT (p->raw_status_low, u.i & 0xffff); |
6364 | XSETINT (p->raw_status_high, u.i >> 16); | |
177c0ea7 | 6365 | |
d0d6b7c5 | 6366 | /* If process has terminated, stop waiting for its output. */ |
e98d950b RS |
6367 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
6368 | && XINT (p->infd) >= 0) | |
6369 | clear_desc_flag = 1; | |
6370 | ||
6371 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6372 | if (clear_desc_flag) | |
6373 | { | |
6374 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
6375 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
6376 | } | |
6be429b1 | 6377 | |
214d6069 | 6378 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6379 | look around. */ |
6380 | if (input_available_clear_time) | |
6381 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6382 | } |
6383 | ||
6384 | /* There was no asynchronous process found for that id. Check | |
6385 | if we have a synchronous process. */ | |
6386 | else | |
6387 | { | |
6388 | synch_process_alive = 0; | |
6389 | ||
6390 | /* Report the status of the synchronous process. */ | |
6391 | if (WIFEXITED (w)) | |
6392 | synch_process_retcode = WRETCODE (w); | |
6393 | else if (WIFSIGNALED (w)) | |
c22aeff8 | 6394 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6395 | |
214d6069 | 6396 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6397 | look around. */ |
6398 | if (input_available_clear_time) | |
6399 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6400 | } |
6401 | ||
6402 | /* On some systems, we must return right away. | |
6403 | If any more processes want to signal us, we will | |
6404 | get another signal. | |
6405 | Otherwise (on systems that have WNOHANG), loop around | |
6406 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6407 | #if (defined WINDOWSNT \ |
8a2a6032 | 6408 | || (defined USG && !defined GNU_LINUX \ |
4e6277d8 | 6409 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6410 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6411 | signal (signo, sigchld_handler); |
6412 | #endif | |
6413 | errno = old_errno; | |
6414 | return; | |
6415 | #endif /* USG, but not HPUX with WNOHANG */ | |
6416 | } | |
6417 | } | |
6418 | \f | |
6419 | ||
6420 | static Lisp_Object | |
6421 | exec_sentinel_unwind (data) | |
6422 | Lisp_Object data; | |
6423 | { | |
70949dac | 6424 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6425 | return Qnil; |
6426 | } | |
6427 | ||
3b9a3dfa RS |
6428 | static Lisp_Object |
6429 | exec_sentinel_error_handler (error) | |
6430 | Lisp_Object error; | |
6431 | { | |
6432 | cmd_error_internal (error, "error in process sentinel: "); | |
6433 | Vinhibit_quit = Qt; | |
6434 | update_echo_area (); | |
833ba342 | 6435 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6436 | return Qt; |
3b9a3dfa RS |
6437 | } |
6438 | ||
d0d6b7c5 JB |
6439 | static void |
6440 | exec_sentinel (proc, reason) | |
6441 | Lisp_Object proc, reason; | |
6442 | { | |
dfc21838 | 6443 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6444 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6445 | int count = SPECPDL_INDEX (); |
4da2f5be | 6446 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6447 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6448 | |
dfc21838 RS |
6449 | /* No need to gcpro these, because all we do with them later |
6450 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6451 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6452 | XSETBUFFER (obuffer, current_buffer); |
6453 | okeymap = current_buffer->keymap; | |
6454 | ||
d0d6b7c5 JB |
6455 | sentinel = p->sentinel; |
6456 | if (NILP (sentinel)) | |
6457 | return; | |
6458 | ||
6459 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6460 | assure that it gets restored no matter how the sentinel exits. */ | |
6461 | p->sentinel = Qnil; | |
6462 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6463 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6464 | specbind (Qinhibit_quit, Qt); | |
6545aada | 6465 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 6466 | |
4da2f5be RS |
6467 | /* In case we get recursively called, |
6468 | and we already saved the match data nonrecursively, | |
6469 | save the same match data in safely recursive fashion. */ | |
6470 | if (outer_running_asynch_code) | |
6471 | { | |
6472 | Lisp_Object tem; | |
89f2614d KS |
6473 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6474 | restore_search_regs (); | |
6475 | record_unwind_save_match_data (); | |
6476 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6477 | } |
6478 | ||
6479 | /* For speed, if a search happens within this code, | |
6480 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6481 | running_asynch_code = 1; |
4da2f5be | 6482 | |
3b9a3dfa RS |
6483 | internal_condition_case_1 (read_process_output_call, |
6484 | Fcons (sentinel, | |
6485 | Fcons (proc, Fcons (reason, Qnil))), | |
6486 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6487 | exec_sentinel_error_handler); | |
4da2f5be RS |
6488 | |
6489 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6490 | restore_search_regs (); |
4da2f5be | 6491 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6492 | |
6493 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6494 | |
6495 | /* Restore waiting_for_user_input_p as it was | |
6496 | when we were called, in case the filter clobbered it. */ | |
6497 | waiting_for_user_input_p = waiting; | |
6498 | ||
7973cfa8 | 6499 | #if 0 |
dfc21838 RS |
6500 | if (! EQ (Fcurrent_buffer (), obuffer) |
6501 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6502 | #endif |
927e08be RS |
6503 | /* But do it only if the caller is actually going to read events. |
6504 | Otherwise there's no need to make him wake up, and it could | |
6505 | cause trouble (for example it would make Fsit_for return). */ | |
6506 | if (waiting_for_user_input_p == -1) | |
6507 | record_asynch_buffer_change (); | |
8fb3cf64 | 6508 | |
2ea6d561 | 6509 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6510 | } |
6511 | ||
6512 | /* Report all recent events of a change in process status | |
6513 | (either run the sentinel or output a message). | |
b50fe468 RS |
6514 | This is usually done while Emacs is waiting for keyboard input |
6515 | but can be done at other times. */ | |
d0d6b7c5 | 6516 | |
ff6daed3 KS |
6517 | static void |
6518 | status_notify (deleting_process) | |
6519 | struct Lisp_Process *deleting_process; | |
d0d6b7c5 JB |
6520 | { |
6521 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6522 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6523 | struct gcpro gcpro1, gcpro2; |
6524 | ||
2e4149a8 KH |
6525 | tail = Qnil; |
6526 | msg = Qnil; | |
d0d6b7c5 JB |
6527 | /* We need to gcpro tail; if read_process_output calls a filter |
6528 | which deletes a process and removes the cons to which tail points | |
6529 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6530 | reference. */ | |
6531 | GCPRO2 (tail, msg); | |
6532 | ||
30623085 RS |
6533 | /* Set this now, so that if new processes are created by sentinels |
6534 | that we run, we get called again to handle their status changes. */ | |
6535 | update_tick = process_tick; | |
6536 | ||
6537 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
d0d6b7c5 | 6538 | { |
30623085 RS |
6539 | Lisp_Object symbol; |
6540 | register struct Lisp_Process *p; | |
6541 | ||
6542 | proc = Fcdr (Fcar (tail)); | |
6543 | p = XPROCESS (proc); | |
6544 | ||
6545 | if (XINT (p->tick) != XINT (p->update_tick)) | |
d0d6b7c5 | 6546 | { |
30623085 | 6547 | XSETINT (p->update_tick, XINT (p->tick)); |
d0d6b7c5 | 6548 | |
30623085 | 6549 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6550 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6551 | && ! EQ (p->status, Qconnect) |
e690ca94 KS |
6552 | && ! EQ (p->status, Qlisten) |
6553 | && ! EQ (p->command, Qt) /* Network process not stopped. */ | |
4da2f5be | 6554 | && XINT (p->infd) >= 0 |
ff6daed3 | 6555 | && p != deleting_process |
4da2f5be | 6556 | && read_process_output (proc, XINT (p->infd)) > 0); |
d0d6b7c5 | 6557 | |
30623085 | 6558 | buffer = p->buffer; |
d0d6b7c5 | 6559 | |
30623085 RS |
6560 | /* Get the text to use for the message. */ |
6561 | if (!NILP (p->raw_status_low)) | |
6562 | update_status (p); | |
116c423c | 6563 | msg = status_message (p); |
d0d6b7c5 | 6564 | |
30623085 RS |
6565 | /* If process is terminated, deactivate it or delete it. */ |
6566 | symbol = p->status; | |
6567 | if (CONSP (p->status)) | |
70949dac | 6568 | symbol = XCAR (p->status); |
d0d6b7c5 | 6569 | |
30623085 RS |
6570 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6571 | || EQ (symbol, Qclosed)) | |
6572 | { | |
6573 | if (delete_exited_processes) | |
6574 | remove_process (proc); | |
6575 | else | |
6576 | deactivate_process (proc); | |
6577 | } | |
d0d6b7c5 | 6578 | |
0ad61fe7 RS |
6579 | /* The actions above may have further incremented p->tick. |
6580 | So set p->update_tick again | |
6581 | so that an error in the sentinel will not cause | |
6582 | this code to be run again. */ | |
6583 | XSETINT (p->update_tick, XINT (p->tick)); | |
30623085 RS |
6584 | /* Now output the message suitably. */ |
6585 | if (!NILP (p->sentinel)) | |
6586 | exec_sentinel (proc, msg); | |
6587 | /* Don't bother with a message in the buffer | |
6588 | when a process becomes runnable. */ | |
6589 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6590 | { | |
6591 | Lisp_Object ro, tem; | |
6592 | struct buffer *old = current_buffer; | |
d8a2934e RS |
6593 | int opoint, opoint_byte; |
6594 | int before, before_byte; | |
2e4149a8 | 6595 | |
30623085 | 6596 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 6597 | |
30623085 RS |
6598 | /* Avoid error if buffer is deleted |
6599 | (probably that's why the process is dead, too) */ | |
6600 | if (NILP (XBUFFER (buffer)->name)) | |
6601 | continue; | |
6602 | Fset_buffer (buffer); | |
12ca5cdf | 6603 | |
6ec8bbd2 | 6604 | opoint = PT; |
d8a2934e | 6605 | opoint_byte = PT_BYTE; |
30623085 RS |
6606 | /* Insert new output into buffer |
6607 | at the current end-of-output marker, | |
6608 | thus preserving logical ordering of input and output. */ | |
6609 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6610 | Fgoto_char (p->mark); |
30623085 | 6611 | else |
d8a2934e | 6612 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6613 | |
6614 | before = PT; | |
d8a2934e | 6615 | before_byte = PT_BYTE; |
30623085 RS |
6616 | |
6617 | tem = current_buffer->read_only; | |
6618 | current_buffer->read_only = Qnil; | |
6619 | insert_string ("\nProcess "); | |
6620 | Finsert (1, &p->name); | |
6621 | insert_string (" "); | |
6622 | Finsert (1, &msg); | |
6623 | current_buffer->read_only = tem; | |
d8a2934e | 6624 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6625 | |
12ca5cdf | 6626 | if (opoint >= before) |
d8a2934e RS |
6627 | SET_PT_BOTH (opoint + (PT - before), |
6628 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6629 | else |
d8a2934e | 6630 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6631 | |
30623085 | 6632 | set_buffer_internal (old); |
d0d6b7c5 | 6633 | } |
30623085 RS |
6634 | } |
6635 | } /* end for */ | |
d0d6b7c5 JB |
6636 | |
6637 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
3007ebfb | 6638 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 6639 | |
d0d6b7c5 JB |
6640 | UNGCPRO; |
6641 | } | |
0fa1789e KH |
6642 | |
6643 | \f | |
6644 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6645 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6646 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6647 | DECODING will be used to decode subprocess output and ENCODING to | |
6648 | encode subprocess input. */) | |
f3d9532b JB |
6649 | (process, decoding, encoding) |
6650 | register Lisp_Object process, decoding, encoding; | |
0fa1789e KH |
6651 | { |
6652 | register struct Lisp_Process *p; | |
6653 | ||
f3d9532b JB |
6654 | CHECK_PROCESS (process); |
6655 | p = XPROCESS (process); | |
0fa1789e | 6656 | if (XINT (p->infd) < 0) |
d5db4077 | 6657 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
0fa1789e | 6658 | if (XINT (p->outfd) < 0) |
d5db4077 | 6659 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6660 | Fcheck_coding_system (decoding); |
6661 | Fcheck_coding_system (encoding); | |
0fa1789e | 6662 | |
03f04413 KH |
6663 | p->decode_coding_system = decoding; |
6664 | p->encode_coding_system = encoding; | |
f3d9532b | 6665 | setup_process_coding_systems (process); |
0fa1789e KH |
6666 | |
6667 | return Qnil; | |
6668 | } | |
6669 | ||
6670 | DEFUN ("process-coding-system", | |
6671 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6672 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
f3d9532b JB |
6673 | (process) |
6674 | register Lisp_Object process; | |
0fa1789e | 6675 | { |
f3d9532b JB |
6676 | CHECK_PROCESS (process); |
6677 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6678 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6679 | } |
03f04413 KH |
6680 | |
6681 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6682 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6683 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6684 | If FLAG is non-nil, the filter is given multibyte strings. | |
6685 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6686 | all character code conversion except for end-of-line conversion is |
6687 | suppressed. */) | |
f3d9532b JB |
6688 | (process, flag) |
6689 | Lisp_Object process, flag; | |
03f04413 KH |
6690 | { |
6691 | register struct Lisp_Process *p; | |
6692 | ||
f3d9532b JB |
6693 | CHECK_PROCESS (process); |
6694 | p = XPROCESS (process); | |
03f04413 | 6695 | p->filter_multibyte = flag; |
f3d9532b | 6696 | setup_process_coding_systems (process); |
03f04413 KH |
6697 | |
6698 | return Qnil; | |
6699 | } | |
6700 | ||
6701 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6702 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6703 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
f3d9532b JB |
6704 | (process) |
6705 | Lisp_Object process; | |
03f04413 KH |
6706 | { |
6707 | register struct Lisp_Process *p; | |
6708 | ||
f3d9532b JB |
6709 | CHECK_PROCESS (process); |
6710 | p = XPROCESS (process); | |
03f04413 KH |
6711 | |
6712 | return (NILP (p->filter_multibyte) ? Qnil : Qt); | |
6713 | } | |
6714 | ||
6715 | ||
d0d6b7c5 | 6716 | \f |
a69281ff RS |
6717 | /* The first time this is called, assume keyboard input comes from DESC |
6718 | instead of from where we used to expect it. | |
6719 | Subsequent calls mean assume input keyboard can come from DESC | |
6720 | in addition to other places. */ | |
6721 | ||
6722 | static int add_keyboard_wait_descriptor_called_flag; | |
6723 | ||
6724 | void | |
6725 | add_keyboard_wait_descriptor (desc) | |
6726 | int desc; | |
6727 | { | |
6728 | if (! add_keyboard_wait_descriptor_called_flag) | |
6729 | FD_CLR (0, &input_wait_mask); | |
6730 | add_keyboard_wait_descriptor_called_flag = 1; | |
6731 | FD_SET (desc, &input_wait_mask); | |
b5dc1c83 | 6732 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
6733 | if (desc > max_keyboard_desc) |
6734 | max_keyboard_desc = desc; | |
6735 | } | |
6736 | ||
6737 | /* From now on, do not expect DESC to give keyboard input. */ | |
6738 | ||
6739 | void | |
6740 | delete_keyboard_wait_descriptor (desc) | |
6741 | int desc; | |
6742 | { | |
6743 | int fd; | |
6744 | int lim = max_keyboard_desc; | |
6745 | ||
6746 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 6747 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
6748 | |
6749 | if (desc == max_keyboard_desc) | |
6750 | for (fd = 0; fd < lim; fd++) | |
6751 | if (FD_ISSET (fd, &input_wait_mask) | |
6752 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6753 | max_keyboard_desc = fd; | |
6754 | } | |
6755 | ||
6756 | /* Return nonzero if *MASK has a bit set | |
6757 | that corresponds to one of the keyboard input descriptors. */ | |
6758 | ||
ff6daed3 | 6759 | static int |
a69281ff RS |
6760 | keyboard_bit_set (mask) |
6761 | SELECT_TYPE *mask; | |
6762 | { | |
6763 | int fd; | |
6764 | ||
ee8e09af | 6765 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
6766 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6767 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6768 | return 1; | |
6769 | ||
6770 | return 0; | |
6771 | } | |
6772 | \f | |
dfcf069d | 6773 | void |
d0d6b7c5 JB |
6774 | init_process () |
6775 | { | |
6776 | register int i; | |
6777 | ||
6778 | #ifdef SIGCHLD | |
6779 | #ifndef CANNOT_DUMP | |
6780 | if (! noninteractive || initialized) | |
6781 | #endif | |
6782 | signal (SIGCHLD, sigchld_handler); | |
6783 | #endif | |
6784 | ||
6785 | FD_ZERO (&input_wait_mask); | |
a69281ff | 6786 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 6787 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 6788 | max_process_desc = 0; |
dd2281ae | 6789 | |
bad49fc7 KS |
6790 | #ifdef NON_BLOCKING_CONNECT |
6791 | FD_ZERO (&connect_wait_mask); | |
6792 | num_pending_connects = 0; | |
6793 | #endif | |
6794 | ||
2d942bfa KS |
6795 | #ifdef ADAPTIVE_READ_BUFFERING |
6796 | process_output_delay_count = 0; | |
6797 | process_output_skip = 0; | |
6798 | #endif | |
6799 | ||
a69281ff | 6800 | FD_SET (0, &input_wait_mask); |
dd2281ae | 6801 | |
d0d6b7c5 JB |
6802 | Vprocess_alist = Qnil; |
6803 | for (i = 0; i < MAXDESC; i++) | |
6804 | { | |
6805 | chan_process[i] = Qnil; | |
6806 | proc_buffered_char[i] = -1; | |
6807 | } | |
c7580538 KH |
6808 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
6809 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
6810 | #ifdef DATAGRAM_SOCKETS |
6811 | bzero (datagram_address, sizeof datagram_address); | |
6812 | #endif | |
9057ff80 | 6813 | |
c2bd2c26 KS |
6814 | #ifdef HAVE_SOCKETS |
6815 | { | |
6816 | Lisp_Object subfeatures = Qnil; | |
2ccf3102 KS |
6817 | struct socket_options *sopt; |
6818 | ||
9057ff80 KS |
6819 | #define ADD_SUBFEATURE(key, val) \ |
6820 | subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures) | |
6821 | ||
9057ff80 | 6822 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 6823 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
6824 | #endif |
6825 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 6826 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 KS |
6827 | #endif |
6828 | #ifdef HAVE_LOCAL_SOCKETS | |
c2bd2c26 | 6829 | ADD_SUBFEATURE (QCfamily, Qlocal); |
e1652a86 KS |
6830 | #endif |
6831 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
6832 | #ifdef AF_INET6 | |
6833 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
9057ff80 KS |
6834 | #endif |
6835 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 6836 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 6837 | #endif |
a8e8ea61 | 6838 | #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY)) |
c2bd2c26 | 6839 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 6840 | #endif |
2ccf3102 KS |
6841 | |
6842 | for (sopt = socket_options; sopt->name; sopt++) | |
6843 | subfeatures = Fcons (intern (sopt->name), subfeatures); | |
6844 | ||
c2bd2c26 KS |
6845 | Fprovide (intern ("make-network-process"), subfeatures); |
6846 | } | |
6847 | #endif /* HAVE_SOCKETS */ | |
d9e7c622 | 6848 | |
ecc175e2 | 6849 | #if defined (DARWIN) || defined (MAC_OSX) |
db853b7a | 6850 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive |
d9e7c622 ST |
6851 | processes. As such, we only change the default value. */ |
6852 | if (initialized) | |
6853 | { | |
6854 | char *release = get_operating_system_release(); | |
6855 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION | |
6856 | && release[1] == '.')) { | |
6857 | Vprocess_connection_type = Qnil; | |
6858 | } | |
6859 | } | |
6860 | #endif | |
d0d6b7c5 | 6861 | } |
312c9964 | 6862 | |
dfcf069d | 6863 | void |
d0d6b7c5 JB |
6864 | syms_of_process () |
6865 | { | |
d0d6b7c5 JB |
6866 | Qprocessp = intern ("processp"); |
6867 | staticpro (&Qprocessp); | |
6868 | Qrun = intern ("run"); | |
6869 | staticpro (&Qrun); | |
6870 | Qstop = intern ("stop"); | |
6871 | staticpro (&Qstop); | |
6872 | Qsignal = intern ("signal"); | |
6873 | staticpro (&Qsignal); | |
6874 | ||
6875 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
6876 | here again. | |
6877 | ||
6878 | Qexit = intern ("exit"); | |
6879 | staticpro (&Qexit); */ | |
6880 | ||
6881 | Qopen = intern ("open"); | |
6882 | staticpro (&Qopen); | |
6883 | Qclosed = intern ("closed"); | |
6884 | staticpro (&Qclosed); | |
dd2a17ab KS |
6885 | Qconnect = intern ("connect"); |
6886 | staticpro (&Qconnect); | |
6887 | Qfailed = intern ("failed"); | |
6888 | staticpro (&Qfailed); | |
e690ca94 KS |
6889 | Qlisten = intern ("listen"); |
6890 | staticpro (&Qlisten); | |
6891 | Qlocal = intern ("local"); | |
6892 | staticpro (&Qlocal); | |
e1652a86 KS |
6893 | Qipv4 = intern ("ipv4"); |
6894 | staticpro (&Qipv4); | |
6895 | #ifdef AF_INET6 | |
6896 | Qipv6 = intern ("ipv6"); | |
6897 | staticpro (&Qipv6); | |
6898 | #endif | |
9057ff80 KS |
6899 | Qdatagram = intern ("datagram"); |
6900 | staticpro (&Qdatagram); | |
e690ca94 KS |
6901 | |
6902 | QCname = intern (":name"); | |
6903 | staticpro (&QCname); | |
6904 | QCbuffer = intern (":buffer"); | |
6905 | staticpro (&QCbuffer); | |
6906 | QChost = intern (":host"); | |
6907 | staticpro (&QChost); | |
6908 | QCservice = intern (":service"); | |
6909 | staticpro (&QCservice); | |
9057ff80 KS |
6910 | QCtype = intern (":type"); |
6911 | staticpro (&QCtype); | |
e690ca94 KS |
6912 | QClocal = intern (":local"); |
6913 | staticpro (&QClocal); | |
6914 | QCremote = intern (":remote"); | |
6915 | staticpro (&QCremote); | |
6916 | QCcoding = intern (":coding"); | |
6917 | staticpro (&QCcoding); | |
6918 | QCserver = intern (":server"); | |
6919 | staticpro (&QCserver); | |
e690ca94 KS |
6920 | QCnowait = intern (":nowait"); |
6921 | staticpro (&QCnowait); | |
e690ca94 KS |
6922 | QCsentinel = intern (":sentinel"); |
6923 | staticpro (&QCsentinel); | |
6924 | QClog = intern (":log"); | |
6925 | staticpro (&QClog); | |
6926 | QCnoquery = intern (":noquery"); | |
6927 | staticpro (&QCnoquery); | |
6928 | QCstop = intern (":stop"); | |
6929 | staticpro (&QCstop); | |
6930 | QCoptions = intern (":options"); | |
6931 | staticpro (&QCoptions); | |
faa7db08 KS |
6932 | QCplist = intern (":plist"); |
6933 | staticpro (&QCplist); | |
7392e23c KS |
6934 | QCfilter_multibyte = intern (":filter-multibyte"); |
6935 | staticpro (&QCfilter_multibyte); | |
177c0ea7 | 6936 | |
6545aada RS |
6937 | Qlast_nonmenu_event = intern ("last-nonmenu-event"); |
6938 | staticpro (&Qlast_nonmenu_event); | |
6939 | ||
d0d6b7c5 JB |
6940 | staticpro (&Vprocess_alist); |
6941 | ||
6942 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
fdb82f93 PJ |
6943 | doc: /* *Non-nil means delete processes immediately when they exit. |
6944 | nil means don't delete them until `list-processes' is run. */); | |
d0d6b7c5 JB |
6945 | |
6946 | delete_exited_processes = 1; | |
6947 | ||
6948 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
6949 | doc: /* Control type of device used to communicate with subprocesses. |
6950 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
6951 | The value has no effect if the system has no ptys or if all ptys are busy: | |
6952 | then a pipe is used in any case. | |
6953 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
6954 | Vprocess_connection_type = Qt; |
6955 | ||
2d942bfa KS |
6956 | #ifdef ADAPTIVE_READ_BUFFERING |
6957 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
6958 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
f3d9532b | 6959 | On some systems, when Emacs reads the output from a subprocess, the output data |
2d942bfa | 6960 | is read in very small blocks, potentially resulting in very poor performance. |
2de35a25 | 6961 | This behavior can be remedied to some extent by setting this variable to a |
2d942bfa | 6962 | non-nil value, as it will automatically delay reading from such processes, to |
f3d9532b | 6963 | allowing them to produce more output before Emacs tries to read it. |
2d942bfa KS |
6964 | If the value is t, the delay is reset after each write to the process; any other |
6965 | non-nil value means that the delay is not reset on write. | |
6966 | The variable takes effect when `start-process' is called. */); | |
6967 | Vprocess_adaptive_read_buffering = Qt; | |
6968 | #endif | |
6969 | ||
d0d6b7c5 JB |
6970 | defsubr (&Sprocessp); |
6971 | defsubr (&Sget_process); | |
6972 | defsubr (&Sget_buffer_process); | |
6973 | defsubr (&Sdelete_process); | |
6974 | defsubr (&Sprocess_status); | |
6975 | defsubr (&Sprocess_exit_status); | |
6976 | defsubr (&Sprocess_id); | |
6977 | defsubr (&Sprocess_name); | |
3b9a3dfa | 6978 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
6979 | defsubr (&Sprocess_command); |
6980 | defsubr (&Sset_process_buffer); | |
6981 | defsubr (&Sprocess_buffer); | |
6982 | defsubr (&Sprocess_mark); | |
6983 | defsubr (&Sset_process_filter); | |
6984 | defsubr (&Sprocess_filter); | |
6985 | defsubr (&Sset_process_sentinel); | |
6986 | defsubr (&Sprocess_sentinel); | |
de282a05 | 6987 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
6988 | defsubr (&Sset_process_inherit_coding_system_flag); |
6989 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
6990 | defsubr (&Sset_process_query_on_exit_flag); |
6991 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 6992 | defsubr (&Sprocess_contact); |
faa7db08 KS |
6993 | defsubr (&Sprocess_plist); |
6994 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
6995 | defsubr (&Slist_processes); |
6996 | defsubr (&Sprocess_list); | |
6997 | defsubr (&Sstart_process); | |
6998 | #ifdef HAVE_SOCKETS | |
2ccf3102 | 6999 | defsubr (&Sset_network_process_option); |
e690ca94 | 7000 | defsubr (&Smake_network_process); |
991234f0 | 7001 | defsubr (&Sformat_network_address); |
b8c7fd71 KS |
7002 | #endif /* HAVE_SOCKETS */ |
7003 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
161933c7 KS |
7004 | #ifdef SIOCGIFCONF |
7005 | defsubr (&Snetwork_interface_list); | |
7006 | #endif | |
7007 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
2ccf3102 | 7008 | defsubr (&Snetwork_interface_info); |
161933c7 | 7009 | #endif |
b8c7fd71 | 7010 | #endif /* HAVE_SOCKETS ... */ |
e690ca94 KS |
7011 | #ifdef DATAGRAM_SOCKETS |
7012 | defsubr (&Sprocess_datagram_address); | |
7013 | defsubr (&Sset_process_datagram_address); | |
7014 | #endif | |
d0d6b7c5 JB |
7015 | defsubr (&Saccept_process_output); |
7016 | defsubr (&Sprocess_send_region); | |
7017 | defsubr (&Sprocess_send_string); | |
7018 | defsubr (&Sinterrupt_process); | |
7019 | defsubr (&Skill_process); | |
7020 | defsubr (&Squit_process); | |
7021 | defsubr (&Sstop_process); | |
7022 | defsubr (&Scontinue_process); | |
b81ea5ef | 7023 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
7024 | defsubr (&Sprocess_send_eof); |
7025 | defsubr (&Ssignal_process); | |
7026 | defsubr (&Swaiting_for_user_input_p); | |
7027 | /* defsubr (&Sprocess_connection); */ | |
0fa1789e KH |
7028 | defsubr (&Sset_process_coding_system); |
7029 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
7030 | defsubr (&Sset_process_filter_multibyte); |
7031 | defsubr (&Sprocess_filter_multibyte_p); | |
d0d6b7c5 JB |
7032 | } |
7033 | ||
6720a7fb JB |
7034 | \f |
7035 | #else /* not subprocesses */ | |
7036 | ||
7037 | #include <sys/types.h> | |
7038 | #include <errno.h> | |
7039 | ||
7040 | #include "lisp.h" | |
7041 | #include "systime.h" | |
52a1b894 EZ |
7042 | #include "charset.h" |
7043 | #include "coding.h" | |
6720a7fb | 7044 | #include "termopts.h" |
81afb6d1 | 7045 | #include "sysselect.h" |
6720a7fb | 7046 | |
ff11dfa1 | 7047 | extern int frame_garbaged; |
6720a7fb | 7048 | |
f694e5d2 KH |
7049 | extern EMACS_TIME timer_check (); |
7050 | extern int timers_run; | |
6720a7fb | 7051 | |
9057ff80 KS |
7052 | Lisp_Object QCtype; |
7053 | ||
6720a7fb JB |
7054 | /* As described above, except assuming that there are no subprocesses: |
7055 | ||
7056 | Wait for timeout to elapse and/or keyboard input to be available. | |
7057 | ||
7058 | time_limit is: | |
7059 | timeout in seconds, or | |
7060 | zero for no limit, or | |
7061 | -1 means gobble data immediately available but don't wait for any. | |
7062 | ||
f76475ad | 7063 | read_kbd is a Lisp_Object: |
6720a7fb JB |
7064 | 0 to ignore keyboard input, or |
7065 | 1 to return when input is available, or | |
7066 | -1 means caller will actually read the input, so don't throw to | |
7067 | the quit handler. | |
b89a415a KS |
7068 | |
7069 | see full version for other parameters. We know that wait_proc will | |
7070 | always be NULL, since `subprocesses' isn't defined. | |
6720a7fb JB |
7071 | |
7072 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 7073 | output that arrives. |
6720a7fb | 7074 | |
eb8c3be9 | 7075 | Return true iff we received input from any process. */ |
6720a7fb JB |
7076 | |
7077 | int | |
214d6069 KS |
7078 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
7079 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
7080 | int time_limit, microsecs, read_kbd, do_display; |
7081 | Lisp_Object wait_for_cell; | |
7082 | struct Lisp_Process *wait_proc; | |
7083 | int just_wait_proc; | |
6720a7fb | 7084 | { |
52fd88d3 | 7085 | register int nfds; |
f694e5d2 | 7086 | EMACS_TIME end_time, timeout; |
8db121c4 | 7087 | SELECT_TYPE waitchannels; |
f694e5d2 | 7088 | int xerrno; |
6720a7fb JB |
7089 | |
7090 | /* What does time_limit really mean? */ | |
7091 | if (time_limit || microsecs) | |
7092 | { | |
6720a7fb | 7093 | EMACS_GET_TIME (end_time); |
52fd88d3 | 7094 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
7095 | EMACS_ADD_TIME (end_time, end_time, timeout); |
7096 | } | |
6720a7fb JB |
7097 | |
7098 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 7099 | and then turn off any other atimers, |
6720a7fb | 7100 | because the select emulator uses alarms. */ |
75eb23f1 | 7101 | stop_polling (); |
30904ab7 | 7102 | turn_on_atimers (0); |
6720a7fb | 7103 | |
52fd88d3 | 7104 | while (1) |
6720a7fb | 7105 | { |
bae8d137 | 7106 | int timeout_reduced_for_timers = 0; |
6720a7fb | 7107 | |
6720a7fb JB |
7108 | /* If calling from keyboard input, do not quit |
7109 | since we want to return C-g as an input character. | |
7110 | Otherwise, do pending quit if requested. */ | |
b89a415a | 7111 | if (read_kbd >= 0) |
6720a7fb JB |
7112 | QUIT; |
7113 | ||
0a65b032 | 7114 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7115 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
7116 | break; |
7117 | ||
bae8d137 RS |
7118 | /* Compute time from now till when time limit is up */ |
7119 | /* Exit if already run out */ | |
52fd88d3 EZ |
7120 | if (time_limit == -1) |
7121 | { | |
7122 | /* -1 specified for timeout means | |
7123 | gobble output available now | |
7124 | but don't wait at all. */ | |
7125 | ||
7126 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
7127 | } | |
7128 | else if (time_limit || microsecs) | |
6720a7fb | 7129 | { |
f694e5d2 KH |
7130 | EMACS_GET_TIME (timeout); |
7131 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
7132 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
7133 | break; |
7134 | } | |
52fd88d3 EZ |
7135 | else |
7136 | { | |
7137 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
7138 | } | |
6720a7fb | 7139 | |
bae8d137 RS |
7140 | /* If our caller will not immediately handle keyboard events, |
7141 | run timer events directly. | |
7142 | (Callers that will immediately read keyboard events | |
7143 | call timer_delay on their own.) */ | |
f3fbd155 | 7144 | if (NILP (wait_for_cell)) |
bae8d137 RS |
7145 | { |
7146 | EMACS_TIME timer_delay; | |
0a65b032 | 7147 | |
9baacf76 | 7148 | do |
0a65b032 | 7149 | { |
9baacf76 GM |
7150 | int old_timers_run = timers_run; |
7151 | timer_delay = timer_check (1); | |
7152 | if (timers_run != old_timers_run && do_display) | |
7153 | /* We must retry, since a timer may have requeued itself | |
7154 | and that could alter the time delay. */ | |
3007ebfb | 7155 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
7156 | else |
7157 | break; | |
0a65b032 | 7158 | } |
9baacf76 | 7159 | while (!detect_input_pending ()); |
0a65b032 | 7160 | |
52fd88d3 | 7161 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7162 | if (read_kbd != 0 |
52fd88d3 EZ |
7163 | && requeued_events_pending_p ()) |
7164 | break; | |
7165 | ||
f694e5d2 | 7166 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
7167 | { |
7168 | EMACS_TIME difference; | |
f694e5d2 | 7169 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
7170 | if (EMACS_TIME_NEG_P (difference)) |
7171 | { | |
f694e5d2 | 7172 | timeout = timer_delay; |
bae8d137 RS |
7173 | timeout_reduced_for_timers = 1; |
7174 | } | |
7175 | } | |
7176 | } | |
7177 | ||
6720a7fb JB |
7178 | /* Cause C-g and alarm signals to take immediate action, |
7179 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7180 | if (read_kbd < 0) |
6720a7fb JB |
7181 | set_waiting_for_input (&timeout); |
7182 | ||
0a65b032 RS |
7183 | /* Wait till there is something to do. */ |
7184 | ||
b89a415a | 7185 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
7186 | FD_ZERO (&waitchannels); |
7187 | else | |
7188 | FD_SET (0, &waitchannels); | |
7189 | ||
ff11dfa1 | 7190 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7191 | reprocess its display stuff. */ |
5164ee8e | 7192 | if (frame_garbaged && do_display) |
0a65b032 RS |
7193 | { |
7194 | clear_waiting_for_input (); | |
3007ebfb | 7195 | redisplay_preserve_echo_area (15); |
b89a415a | 7196 | if (read_kbd < 0) |
0a65b032 RS |
7197 | set_waiting_for_input (&timeout); |
7198 | } | |
6720a7fb | 7199 | |
b89a415a | 7200 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
7201 | { |
7202 | nfds = 0; | |
7203 | FD_ZERO (&waitchannels); | |
7204 | } | |
7205 | else | |
7206 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7207 | &timeout); | |
f694e5d2 KH |
7208 | |
7209 | xerrno = errno; | |
6720a7fb JB |
7210 | |
7211 | /* Make C-g and alarm signals set flags again */ | |
7212 | clear_waiting_for_input (); | |
7213 | ||
7214 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7215 | do_pending_window_change (0); |
6720a7fb | 7216 | |
f694e5d2 KH |
7217 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7218 | /* We waited the full specified time, so return now. */ | |
7219 | break; | |
7220 | ||
6720a7fb JB |
7221 | if (nfds == -1) |
7222 | { | |
7223 | /* If the system call was interrupted, then go around the | |
7224 | loop again. */ | |
f694e5d2 | 7225 | if (xerrno == EINTR) |
8db121c4 | 7226 | FD_ZERO (&waitchannels); |
f694e5d2 | 7227 | else |
68c45bf0 | 7228 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb JB |
7229 | } |
7230 | #ifdef sun | |
7231 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) | |
7232 | /* System sometimes fails to deliver SIGIO. */ | |
7233 | kill (getpid (), SIGIO); | |
7234 | #endif | |
7324d660 | 7235 | #ifdef SIGIO |
b89a415a | 7236 | if (read_kbd && interrupt_input && (waitchannels & 1)) |
e643c5be | 7237 | kill (getpid (), SIGIO); |
7324d660 | 7238 | #endif |
6720a7fb | 7239 | |
f694e5d2 KH |
7240 | /* Check for keyboard input */ |
7241 | ||
b89a415a | 7242 | if (read_kbd |
78c1afb6 | 7243 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7244 | { |
78c1afb6 | 7245 | swallow_events (do_display); |
f694e5d2 | 7246 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7247 | break; |
78c1afb6 EZ |
7248 | } |
7249 | ||
52fd88d3 | 7250 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7251 | if (read_kbd |
52fd88d3 EZ |
7252 | && requeued_events_pending_p ()) |
7253 | break; | |
7254 | ||
f854a00b RS |
7255 | /* If wait_for_cell. check for keyboard input |
7256 | but don't run any timers. | |
7257 | ??? (It seems wrong to me to check for keyboard | |
7258 | input at all when wait_for_cell, but the code | |
7259 | has been this way since July 1994. | |
7260 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7261 | if (! NILP (wait_for_cell) |
f854a00b RS |
7262 | && detect_input_pending ()) |
7263 | { | |
7264 | swallow_events (do_display); | |
7265 | if (detect_input_pending ()) | |
7266 | break; | |
7267 | } | |
7268 | ||
0a65b032 | 7269 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7270 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7271 | break; |
6720a7fb JB |
7272 | } |
7273 | ||
a87b802f JB |
7274 | start_polling (); |
7275 | ||
6720a7fb JB |
7276 | return 0; |
7277 | } | |
7278 | ||
7279 | ||
e2ba787b PJ |
7280 | /* Don't confuse make-docfile by having two doc strings for this function. |
7281 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 7282 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
7283 | 0) |
7284 | (name) | |
6720a7fb JB |
7285 | register Lisp_Object name; |
7286 | { | |
7287 | return Qnil; | |
7288 | } | |
7289 | ||
e2ba787b PJ |
7290 | /* Don't confuse make-docfile by having two doc strings for this function. |
7291 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 7292 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7293 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7294 | 1, 1, 0, | |
7295 | 0) | |
7296 | (process) | |
52a1b894 EZ |
7297 | register Lisp_Object process; |
7298 | { | |
7299 | /* Ignore the argument and return the value of | |
7300 | inherit-process-coding-system. */ | |
7301 | return inherit_process_coding_system ? Qt : Qnil; | |
7302 | } | |
7303 | ||
6720a7fb JB |
7304 | /* Kill all processes associated with `buffer'. |
7305 | If `buffer' is nil, kill all processes. | |
7306 | Since we have no subprocesses, this does nothing. */ | |
7307 | ||
d9bb0c32 | 7308 | void |
6720a7fb JB |
7309 | kill_buffer_processes (buffer) |
7310 | Lisp_Object buffer; | |
7311 | { | |
7312 | } | |
7313 | ||
02b9b4fd | 7314 | void |
6720a7fb JB |
7315 | init_process () |
7316 | { | |
7317 | } | |
7318 | ||
02b9b4fd | 7319 | void |
6720a7fb JB |
7320 | syms_of_process () |
7321 | { | |
9057ff80 KS |
7322 | QCtype = intern (":type"); |
7323 | staticpro (&QCtype); | |
7324 | ||
6720a7fb | 7325 | defsubr (&Sget_buffer_process); |
52a1b894 | 7326 | defsubr (&Sprocess_inherit_coding_system_flag); |
6720a7fb JB |
7327 | } |
7328 | ||
7329 | \f | |
7330 | #endif /* not subprocesses */ | |
ab5796a9 MB |
7331 | |
7332 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
7333 | (do not change this comment) */ |