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, | |
4e6835db | 4 | 2005, 2006, 2007 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 | |
684d6f5b | 10 | the Free Software Foundation; either version 3, 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> | |
2026418c YM |
43 | #ifdef HAVE_INTTYPES_H |
44 | #include <inttypes.h> | |
45 | #endif | |
93b4f699 RS |
46 | #ifdef HAVE_UNISTD_H |
47 | #include <unistd.h> | |
48 | #endif | |
d0d6b7c5 | 49 | |
f22ac298 | 50 | #if defined(WINDOWSNT) || defined(UNIX98_PTYS) |
e98d950b RS |
51 | #include <stdlib.h> |
52 | #include <fcntl.h> | |
53 | #endif /* not WINDOWSNT */ | |
54 | ||
d0d6b7c5 JB |
55 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
56 | #include <sys/socket.h> | |
57 | #include <netdb.h> | |
58 | #include <netinet/in.h> | |
59 | #include <arpa/inet.h> | |
f2cfa9a6 RS |
60 | #ifdef NEED_NET_ERRNO_H |
61 | #include <net/errno.h> | |
62 | #endif /* NEED_NET_ERRNO_H */ | |
e690ca94 KS |
63 | |
64 | /* Are local (unix) sockets supported? */ | |
28c6e94f | 65 | #if defined (HAVE_SYS_UN_H) && !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
e690ca94 KS |
66 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
67 | #define AF_LOCAL AF_UNIX | |
68 | #endif | |
69 | #ifdef AF_LOCAL | |
70 | #define HAVE_LOCAL_SOCKETS | |
71 | #include <sys/un.h> | |
72 | #endif | |
73 | #endif | |
d0d6b7c5 JB |
74 | #endif /* HAVE_SOCKETS */ |
75 | ||
827a1788 | 76 | /* TERM is a poor-man's SLIP, used on GNU/Linux. */ |
1d2c16fa RS |
77 | #ifdef TERM |
78 | #include <client.h> | |
79 | #endif | |
80 | ||
cf32fea0 PR |
81 | /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */ |
82 | #ifdef HAVE_BROKEN_INET_ADDR | |
79967d5e RS |
83 | #define IN_ADDR struct in_addr |
84 | #define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1) | |
85 | #else | |
86 | #define IN_ADDR unsigned long | |
87 | #define NUMERIC_ADDR_ERROR (numeric_addr == -1) | |
88 | #endif | |
89 | ||
6df54671 | 90 | #if defined(BSD_SYSTEM) || defined(STRIDE) |
d0d6b7c5 | 91 | #include <sys/ioctl.h> |
0ad77c54 | 92 | #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5) |
d0d6b7c5 JB |
93 | #include <fcntl.h> |
94 | #endif /* HAVE_PTYS and no O_NDELAY */ | |
6df54671 | 95 | #endif /* BSD_SYSTEM || STRIDE */ |
d0d6b7c5 | 96 | |
99e3d726 RS |
97 | #ifdef BROKEN_O_NONBLOCK |
98 | #undef O_NONBLOCK | |
99 | #endif /* BROKEN_O_NONBLOCK */ | |
100 | ||
d0d6b7c5 JB |
101 | #ifdef NEED_BSDTTY |
102 | #include <bsdtty.h> | |
103 | #endif | |
104 | ||
161933c7 KS |
105 | /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */ |
106 | #ifdef HAVE_SOCKETS | |
107 | #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H) | |
108 | /* sys/ioctl.h may have been included already */ | |
109 | #ifndef SIOCGIFADDR | |
110 | #include <sys/ioctl.h> | |
111 | #endif | |
112 | #include <net/if.h> | |
113 | #endif | |
114 | #endif | |
115 | ||
d0d6b7c5 JB |
116 | #ifdef IRIS |
117 | #include <sys/sysmacros.h> /* for "minor" */ | |
118 | #endif /* not IRIS */ | |
177c0ea7 | 119 | |
e62cab61 DL |
120 | #ifdef HAVE_SYS_WAIT |
121 | #include <sys/wait.h> | |
122 | #endif | |
d0d6b7c5 | 123 | |
08116b48 CY |
124 | #ifdef HAVE_RES_INIT |
125 | #include <netinet/in.h> | |
126 | #include <arpa/nameser.h> | |
127 | #include <resolv.h> | |
128 | #endif | |
129 | ||
fa8459a3 | 130 | #include "lisp.h" |
d0d6b7c5 | 131 | #include "systime.h" |
36ebaafa | 132 | #include "systty.h" |
d0d6b7c5 | 133 | |
d0d6b7c5 JB |
134 | #include "window.h" |
135 | #include "buffer.h" | |
0fa1789e KH |
136 | #include "charset.h" |
137 | #include "coding.h" | |
d0d6b7c5 | 138 | #include "process.h" |
428a555e | 139 | #include "frame.h" |
d0d6b7c5 JB |
140 | #include "termhooks.h" |
141 | #include "termopts.h" | |
142 | #include "commands.h" | |
3ec68006 | 143 | #include "keyboard.h" |
ececcbec | 144 | #include "blockinput.h" |
dfcf069d | 145 | #include "dispextern.h" |
e0016554 | 146 | #include "composite.h" |
30904ab7 | 147 | #include "atimer.h" |
d0d6b7c5 | 148 | |
dd2281ae | 149 | Lisp_Object Qprocessp; |
dd2a17ab | 150 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 151 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
e1652a86 KS |
152 | Lisp_Object Qlocal, Qipv4, Qdatagram; |
153 | #ifdef AF_INET6 | |
154 | Lisp_Object Qipv6; | |
155 | #endif | |
9057ff80 | 156 | Lisp_Object QCname, QCbuffer, QChost, QCservice, QCtype; |
e690ca94 | 157 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 158 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 159 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
7392e23c | 160 | Lisp_Object QCfilter_multibyte; |
6545aada | 161 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
162 | /* QCfamily is declared and initialized in xfaces.c, |
163 | QCfilter in keyboard.c. */ | |
164 | extern Lisp_Object QCfamily, QCfilter; | |
165 | ||
d0d6b7c5 JB |
166 | /* Qexit is declared and initialized in eval.c. */ |
167 | ||
e0f712ba AC |
168 | /* QCfamily is defined in xfaces.c. */ |
169 | extern Lisp_Object QCfamily; | |
170 | /* QCfilter is defined in keyboard.c. */ | |
171 | extern Lisp_Object QCfilter; | |
172 | ||
d0d6b7c5 | 173 | /* a process object is a network connection when its childp field is neither |
365aee82 | 174 | Qt nor Qnil but is instead a property list (KEY VAL ...). */ |
d0d6b7c5 JB |
175 | |
176 | #ifdef HAVE_SOCKETS | |
de282a05 | 177 | #define NETCONN_P(p) (GC_CONSP (XPROCESS (p)->childp)) |
e690ca94 | 178 | #define NETCONN1_P(p) (GC_CONSP ((p)->childp)) |
d0d6b7c5 JB |
179 | #else |
180 | #define NETCONN_P(p) 0 | |
e690ca94 | 181 | #define NETCONN1_P(p) 0 |
d0d6b7c5 JB |
182 | #endif /* HAVE_SOCKETS */ |
183 | ||
184 | /* Define first descriptor number available for subprocesses. */ | |
185 | #ifdef VMS | |
186 | #define FIRST_PROC_DESC 1 | |
187 | #else /* Not VMS */ | |
188 | #define FIRST_PROC_DESC 3 | |
189 | #endif | |
190 | ||
191 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
192 | testing SIGCHLD. */ | |
193 | ||
194 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
195 | #define SIGCHLD SIGCLD | |
196 | #endif /* SIGCLD */ | |
197 | ||
198 | #include "syssignal.h" | |
199 | ||
889255b4 | 200 | #include "syswait.h" |
d0d6b7c5 | 201 | |
d9e7c622 | 202 | extern char *get_operating_system_release (); |
41d03b9a | 203 | |
3ec68006 | 204 | #ifndef USE_CRT_DLL |
b062d1fe | 205 | extern int errno; |
3ec68006 | 206 | #endif |
b062d1fe | 207 | #ifdef VMS |
d0d6b7c5 | 208 | extern char *sys_errlist[]; |
b062d1fe | 209 | #endif |
d0d6b7c5 | 210 | |
5f0929a7 RS |
211 | #ifndef HAVE_H_ERRNO |
212 | extern int h_errno; | |
213 | #endif | |
214 | ||
d0d6b7c5 JB |
215 | /* t means use pty, nil means use a pipe, |
216 | maybe other values to come. */ | |
dd2281ae | 217 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 JB |
218 | |
219 | #ifdef SKTPAIR | |
220 | #ifndef HAVE_SOCKETS | |
221 | #include <sys/socket.h> | |
222 | #endif | |
223 | #endif /* SKTPAIR */ | |
224 | ||
17d02632 KH |
225 | /* These next two vars are non-static since sysdep.c uses them in the |
226 | emulation of `select'. */ | |
d0d6b7c5 | 227 | /* Number of events of change of status of a process. */ |
17d02632 | 228 | int process_tick; |
d0d6b7c5 | 229 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 230 | int update_tick; |
d0d6b7c5 | 231 | |
dd2a17ab KS |
232 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
233 | ||
234 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
235 | #undef NON_BLOCKING_CONNECT | |
236 | #else | |
237 | #ifndef NON_BLOCKING_CONNECT | |
238 | #ifdef HAVE_SOCKETS | |
239 | #ifdef HAVE_SELECT | |
240 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
241 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
242 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
243 | #define NON_BLOCKING_CONNECT | |
244 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
245 | #endif /* O_NONBLOCK || O_NDELAY */ | |
246 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
247 | #endif /* HAVE_SELECT */ | |
248 | #endif /* HAVE_SOCKETS */ | |
249 | #endif /* NON_BLOCKING_CONNECT */ | |
250 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
251 | ||
e690ca94 KS |
252 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
253 | this system. We need to read full packets, so we need a | |
254 | "non-destructive" select. So we require either native select, | |
255 | or emulation of select using FIONREAD. */ | |
256 | ||
e690ca94 KS |
257 | #ifdef BROKEN_DATAGRAM_SOCKETS |
258 | #undef DATAGRAM_SOCKETS | |
259 | #else | |
260 | #ifndef DATAGRAM_SOCKETS | |
261 | #ifdef HAVE_SOCKETS | |
262 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
263 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
264 | #define DATAGRAM_SOCKETS | |
265 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
266 | #endif /* HAVE_SELECT || FIONREAD */ | |
267 | #endif /* HAVE_SOCKETS */ | |
268 | #endif /* DATAGRAM_SOCKETS */ | |
269 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
270 | ||
dd2a17ab KS |
271 | #ifdef TERM |
272 | #undef NON_BLOCKING_CONNECT | |
e690ca94 | 273 | #undef DATAGRAM_SOCKETS |
dd2a17ab KS |
274 | #endif |
275 | ||
2d942bfa KS |
276 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
277 | #ifdef EMACS_HAS_USECS | |
278 | #define ADAPTIVE_READ_BUFFERING | |
279 | #endif | |
280 | #endif | |
281 | ||
282 | #ifdef ADAPTIVE_READ_BUFFERING | |
283 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
284 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
285 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
286 | ||
db853b7a KS |
287 | /* Number of processes which have a non-zero read_output_delay, |
288 | and therefore might be delayed for adaptive read buffering. */ | |
2d942bfa KS |
289 | |
290 | static int process_output_delay_count; | |
291 | ||
db853b7a | 292 | /* Non-zero if any process has non-nil read_output_skip. */ |
2d942bfa KS |
293 | |
294 | static int process_output_skip; | |
295 | ||
296 | /* Non-nil means to delay reading process output to improve buffering. | |
297 | A value of t means that delay is reset after each send, any other | |
db853b7a KS |
298 | non-nil value does not reset the delay. A value of nil disables |
299 | adaptive read buffering completely. */ | |
2d942bfa KS |
300 | static Lisp_Object Vprocess_adaptive_read_buffering; |
301 | #else | |
302 | #define process_output_delay_count 0 | |
303 | #endif | |
304 | ||
e690ca94 | 305 | |
5886acf9 | 306 | #include "sysselect.h" |
d0d6b7c5 | 307 | |
ff6daed3 KS |
308 | static int keyboard_bit_set P_ ((SELECT_TYPE *)); |
309 | static void deactivate_process P_ ((Lisp_Object)); | |
310 | static void status_notify P_ ((struct Lisp_Process *)); | |
311 | static int read_process_output P_ ((Lisp_Object, int)); | |
41d03b9a | 312 | |
583dcae4 | 313 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 314 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 315 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
316 | #define POLL_FOR_INPUT |
317 | #endif | |
318 | ||
84af9896 RS |
319 | static Lisp_Object get_process (); |
320 | static void exec_sentinel (); | |
321 | ||
322 | extern EMACS_TIME timer_check (); | |
323 | extern int timers_run; | |
324 | \f | |
a69281ff | 325 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 326 | |
dd2281ae RS |
327 | static SELECT_TYPE input_wait_mask; |
328 | ||
819b8f00 | 329 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
330 | |
331 | static SELECT_TYPE non_keyboard_wait_mask; | |
332 | ||
819b8f00 | 333 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
334 | |
335 | static SELECT_TYPE non_process_wait_mask; | |
336 | ||
994d9841 NR |
337 | /* Mask for the gpm mouse input descriptor. */ |
338 | ||
339 | static SELECT_TYPE gpm_wait_mask; | |
340 | ||
bad49fc7 | 341 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
342 | /* Mask of bits indicating the descriptors that we wait for connect to |
343 | complete on. Once they complete, they are removed from this mask | |
344 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
345 | ||
346 | static SELECT_TYPE connect_wait_mask; | |
347 | ||
348 | /* Number of bits set in connect_wait_mask. */ | |
349 | static int num_pending_connects; | |
350 | ||
bad49fc7 KS |
351 | #define IF_NON_BLOCKING_CONNECT(s) s |
352 | #else | |
353 | #define IF_NON_BLOCKING_CONNECT(s) | |
354 | #endif | |
355 | ||
7d0e672e RS |
356 | /* The largest descriptor currently in use for a process object. */ |
357 | static int max_process_desc; | |
358 | ||
a69281ff RS |
359 | /* The largest descriptor currently in use for keyboard input. */ |
360 | static int max_keyboard_desc; | |
d0d6b7c5 | 361 | |
994d9841 NR |
362 | /* The largest descriptor currently in use for gpm mouse input. */ |
363 | static int max_gpm_desc; | |
364 | ||
dd2281ae RS |
365 | /* Nonzero means delete a process right away if it exits. */ |
366 | static int delete_exited_processes; | |
d0d6b7c5 JB |
367 | |
368 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 369 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
370 | |
371 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 372 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
373 | |
374 | /* Buffered-ahead input char from process, indexed by channel. | |
375 | -1 means empty (no char is buffered). | |
376 | Used on sys V where the only way to tell if there is any | |
377 | output from the process is to read at least one char. | |
378 | Always -1 on systems that support FIONREAD. */ | |
379 | ||
e98d950b RS |
380 | /* Don't make static; need to access externally. */ |
381 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 382 | |
0fa1789e | 383 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
384 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
385 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 386 | |
e690ca94 KS |
387 | #ifdef DATAGRAM_SOCKETS |
388 | /* Table of `partner address' for datagram sockets. */ | |
389 | struct sockaddr_and_len { | |
390 | struct sockaddr *sa; | |
391 | int len; | |
392 | } datagram_address[MAXDESC]; | |
393 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 394 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
395 | #else |
396 | #define DATAGRAM_CHAN_P(chan) (0) | |
397 | #define DATAGRAM_CONN_P(proc) (0) | |
398 | #endif | |
399 | ||
93b4f699 RS |
400 | /* Maximum number of bytes to send to a pty without an eof. */ |
401 | static int pty_max_bytes; | |
3b9a3dfa | 402 | |
84af9896 RS |
403 | /* Nonzero means don't run process sentinels. This is used |
404 | when exiting. */ | |
405 | int inhibit_sentinels; | |
406 | ||
875e6b94 | 407 | #ifdef HAVE_PTYS |
e62cab61 DL |
408 | #ifdef HAVE_PTY_H |
409 | #include <pty.h> | |
410 | #endif | |
875e6b94 | 411 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
412 | |
413 | static char pty_name[24]; | |
875e6b94 | 414 | #endif |
d0d6b7c5 JB |
415 | \f |
416 | /* Compute the Lisp form of the process status, p->status, from | |
417 | the numeric status that was returned by `wait'. */ | |
418 | ||
ff6daed3 | 419 | static Lisp_Object status_convert (); |
f9738840 | 420 | |
ff6daed3 | 421 | static void |
d0d6b7c5 JB |
422 | update_status (p) |
423 | struct Lisp_Process *p; | |
424 | { | |
425 | union { int i; WAITTYPE wt; } u; | |
6bfd98e7 SM |
426 | eassert (p->raw_status_new); |
427 | u.i = p->raw_status; | |
d0d6b7c5 | 428 | p->status = status_convert (u.wt); |
6bfd98e7 | 429 | p->raw_status_new = 0; |
d0d6b7c5 JB |
430 | } |
431 | ||
177c0ea7 | 432 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
433 | the list that we use internally. */ |
434 | ||
ff6daed3 | 435 | static Lisp_Object |
d0d6b7c5 JB |
436 | status_convert (w) |
437 | WAITTYPE w; | |
438 | { | |
439 | if (WIFSTOPPED (w)) | |
440 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
441 | else if (WIFEXITED (w)) | |
442 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
443 | WCOREDUMP (w) ? Qt : Qnil)); | |
444 | else if (WIFSIGNALED (w)) | |
445 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
446 | WCOREDUMP (w) ? Qt : Qnil)); | |
447 | else | |
448 | return Qrun; | |
449 | } | |
450 | ||
451 | /* Given a status-list, extract the three pieces of information | |
452 | and store them individually through the three pointers. */ | |
453 | ||
ff6daed3 | 454 | static void |
d0d6b7c5 JB |
455 | decode_status (l, symbol, code, coredump) |
456 | Lisp_Object l; | |
457 | Lisp_Object *symbol; | |
458 | int *code; | |
459 | int *coredump; | |
460 | { | |
461 | Lisp_Object tem; | |
462 | ||
bcd69aea | 463 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
464 | { |
465 | *symbol = l; | |
466 | *code = 0; | |
467 | *coredump = 0; | |
468 | } | |
469 | else | |
470 | { | |
70949dac KR |
471 | *symbol = XCAR (l); |
472 | tem = XCDR (l); | |
473 | *code = XFASTINT (XCAR (tem)); | |
474 | tem = XCDR (tem); | |
d0d6b7c5 JB |
475 | *coredump = !NILP (tem); |
476 | } | |
477 | } | |
478 | ||
479 | /* Return a string describing a process status list. */ | |
480 | ||
116c423c KS |
481 | static Lisp_Object |
482 | status_message (p) | |
483 | struct Lisp_Process *p; | |
d0d6b7c5 | 484 | { |
116c423c | 485 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
486 | Lisp_Object symbol; |
487 | int code, coredump; | |
488 | Lisp_Object string, string2; | |
489 | ||
490 | decode_status (status, &symbol, &code, &coredump); | |
491 | ||
492 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
493 | { | |
68c45bf0 | 494 | char *signame; |
ca9c0567 | 495 | synchronize_system_messages_locale (); |
68c45bf0 | 496 | signame = strsignal (code); |
b97ad9ea RS |
497 | if (signame == 0) |
498 | signame = "unknown"; | |
499 | string = build_string (signame); | |
d0d6b7c5 | 500 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
a814cc69 | 501 | SSET (string, 0, DOWNCASE (SREF (string, 0))); |
d0d6b7c5 JB |
502 | return concat2 (string, string2); |
503 | } | |
504 | else if (EQ (symbol, Qexit)) | |
505 | { | |
116c423c KS |
506 | if (NETCONN1_P (p)) |
507 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
508 | if (code == 0) |
509 | return build_string ("finished\n"); | |
f2980264 | 510 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 511 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
512 | return concat3 (build_string ("exited abnormally with code "), |
513 | string, string2); | |
d0d6b7c5 | 514 | } |
dd2a17ab KS |
515 | else if (EQ (symbol, Qfailed)) |
516 | { | |
517 | string = Fnumber_to_string (make_number (code)); | |
518 | string2 = build_string ("\n"); | |
e690ca94 KS |
519 | return concat3 (build_string ("failed with code "), |
520 | string, string2); | |
dd2a17ab | 521 | } |
d0d6b7c5 JB |
522 | else |
523 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
524 | } | |
525 | \f | |
526 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 527 | |
875e6b94 KH |
528 | /* Open an available pty, returning a file descriptor. |
529 | Return -1 on failure. | |
530 | The file name of the terminal corresponding to the pty | |
531 | is left in the variable pty_name. */ | |
532 | ||
ff6daed3 | 533 | static int |
d0d6b7c5 JB |
534 | allocate_pty () |
535 | { | |
dfcf069d | 536 | register int c, i; |
d0d6b7c5 JB |
537 | int fd; |
538 | ||
539 | #ifdef PTY_ITERATION | |
540 | PTY_ITERATION | |
541 | #else | |
542 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
543 | for (i = 0; i < 16; i++) | |
544 | #endif | |
545 | { | |
26d7389d | 546 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
547 | #ifdef PTY_NAME_SPRINTF |
548 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
549 | #else |
550 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
551 | #endif /* no PTY_NAME_SPRINTF */ |
552 | ||
4d7c105e RS |
553 | #ifdef PTY_OPEN |
554 | PTY_OPEN; | |
555 | #else /* no PTY_OPEN */ | |
34967d0f | 556 | { |
34967d0f SM |
557 | # ifdef IRIS |
558 | /* Unusual IRIS code */ | |
559 | *ptyv = emacs_open ("/dev/ptc", O_RDWR | O_NDELAY, 0); | |
560 | if (fd < 0) | |
561 | return -1; | |
562 | if (fstat (fd, &stb) < 0) | |
563 | return -1; | |
564 | # else /* not IRIS */ | |
565 | { /* Some systems name their pseudoterminals so that there are gaps in | |
566 | the usual sequence - for example, on HP9000/S700 systems, there | |
567 | are no pseudoterminals with names ending in 'f'. So we wait for | |
568 | three failures in a row before deciding that we've reached the | |
569 | end of the ptys. */ | |
570 | int failed_count = 0; | |
f3d9532b | 571 | |
34967d0f SM |
572 | if (stat (pty_name, &stb) < 0) |
573 | { | |
574 | failed_count++; | |
575 | if (failed_count >= 3) | |
576 | return -1; | |
577 | } | |
578 | else | |
579 | failed_count = 0; | |
32676c08 | 580 | } |
34967d0f SM |
581 | # ifdef O_NONBLOCK |
582 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
583 | # else | |
584 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
585 | # endif | |
586 | # endif /* not IRIS */ | |
587 | } | |
4d7c105e | 588 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
589 | |
590 | if (fd >= 0) | |
591 | { | |
592 | /* check to make certain that both sides are available | |
593 | this avoids a nasty yet stupid bug in rlogins */ | |
594 | #ifdef PTY_TTY_NAME_SPRINTF | |
595 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 JB |
596 | #else |
597 | sprintf (pty_name, "/dev/tty%c%x", c, i); | |
d0d6b7c5 JB |
598 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
599 | #ifndef UNIPLUS | |
600 | if (access (pty_name, 6) != 0) | |
601 | { | |
68c45bf0 | 602 | emacs_close (fd); |
34967d0f | 603 | # if !defined(IRIS) && !defined(__sgi) |
d0d6b7c5 | 604 | continue; |
34967d0f | 605 | # else |
d0d6b7c5 | 606 | return -1; |
34967d0f | 607 | # endif /* IRIS */ |
d0d6b7c5 JB |
608 | } |
609 | #endif /* not UNIPLUS */ | |
610 | setup_pty (fd); | |
611 | return fd; | |
612 | } | |
613 | } | |
614 | return -1; | |
615 | } | |
616 | #endif /* HAVE_PTYS */ | |
617 | \f | |
ff6daed3 | 618 | static Lisp_Object |
d0d6b7c5 JB |
619 | make_process (name) |
620 | Lisp_Object name; | |
621 | { | |
622 | register Lisp_Object val, tem, name1; | |
623 | register struct Lisp_Process *p; | |
624 | char suffix[10]; | |
625 | register int i; | |
626 | ||
98423852 | 627 | p = allocate_process (); |
23d6bb9c | 628 | |
60f0fb11 SM |
629 | p->infd = -1; |
630 | p->outfd = -1; | |
631 | p->tick = 0; | |
632 | p->update_tick = 0; | |
6bfd98e7 SM |
633 | p->pid = 0; |
634 | p->raw_status_new = 0; | |
d0d6b7c5 JB |
635 | p->status = Qrun; |
636 | p->mark = Fmake_marker (); | |
637 | ||
2d942bfa | 638 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
639 | p->adaptive_read_buffering = 0; |
640 | p->read_output_delay = 0; | |
641 | p->read_output_skip = 0; | |
2d942bfa KS |
642 | #endif |
643 | ||
d0d6b7c5 JB |
644 | /* If name is already in use, modify it until it is unused. */ |
645 | ||
646 | name1 = name; | |
647 | for (i = 1; ; i++) | |
648 | { | |
649 | tem = Fget_process (name1); | |
650 | if (NILP (tem)) break; | |
651 | sprintf (suffix, "<%d>", i); | |
652 | name1 = concat2 (name, build_string (suffix)); | |
653 | } | |
654 | name = name1; | |
655 | p->name = name; | |
23d6bb9c | 656 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
657 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
658 | return val; | |
659 | } | |
660 | ||
ff6daed3 | 661 | static void |
d0d6b7c5 JB |
662 | remove_process (proc) |
663 | register Lisp_Object proc; | |
664 | { | |
665 | register Lisp_Object pair; | |
666 | ||
667 | pair = Frassq (proc, Vprocess_alist); | |
668 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
669 | |
670 | deactivate_process (proc); | |
671 | } | |
03f04413 KH |
672 | |
673 | /* Setup coding systems of PROCESS. */ | |
674 | ||
675 | void | |
676 | setup_process_coding_systems (process) | |
677 | Lisp_Object process; | |
678 | { | |
679 | struct Lisp_Process *p = XPROCESS (process); | |
60f0fb11 SM |
680 | int inch = p->infd; |
681 | int outch = p->outfd; | |
03f04413 | 682 | |
20f1ef2e KH |
683 | if (inch < 0 || outch < 0) |
684 | return; | |
685 | ||
03f04413 KH |
686 | if (!proc_decode_coding_system[inch]) |
687 | proc_decode_coding_system[inch] | |
688 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
689 | setup_coding_system (p->decode_coding_system, | |
690 | proc_decode_coding_system[inch]); | |
691 | if (! NILP (p->filter)) | |
692 | { | |
60f0fb11 | 693 | if (!p->filter_multibyte) |
03f04413 KH |
694 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); |
695 | } | |
696 | else if (BUFFERP (p->buffer)) | |
697 | { | |
698 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
699 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
700 | } | |
701 | ||
702 | if (!proc_encode_coding_system[outch]) | |
703 | proc_encode_coding_system[outch] | |
704 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
705 | setup_coding_system (p->encode_coding_system, | |
706 | proc_encode_coding_system[outch]); | |
6b62b48d KH |
707 | if (proc_encode_coding_system[outch]->eol_type == CODING_EOL_UNDECIDED) |
708 | proc_encode_coding_system[outch]->eol_type = system_eol_type; | |
03f04413 | 709 | } |
d0d6b7c5 JB |
710 | \f |
711 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
712 | doc: /* Return t if OBJECT is a process. */) |
713 | (object) | |
4ee3e309 | 714 | Lisp_Object object; |
d0d6b7c5 | 715 | { |
4ee3e309 | 716 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
717 | } |
718 | ||
719 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
720 | doc: /* Return the process named NAME, or nil if there is none. */) |
721 | (name) | |
d0d6b7c5 JB |
722 | register Lisp_Object name; |
723 | { | |
bcd69aea | 724 | if (PROCESSP (name)) |
d0d6b7c5 | 725 | return name; |
b7826503 | 726 | CHECK_STRING (name); |
d0d6b7c5 JB |
727 | return Fcdr (Fassoc (name, Vprocess_alist)); |
728 | } | |
729 | ||
730 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
731 | doc: /* Return the (or a) process associated with BUFFER. |
732 | BUFFER may be a buffer or the name of one. */) | |
733 | (buffer) | |
4ee3e309 | 734 | register Lisp_Object buffer; |
d0d6b7c5 JB |
735 | { |
736 | register Lisp_Object buf, tail, proc; | |
737 | ||
4ee3e309 EN |
738 | if (NILP (buffer)) return Qnil; |
739 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
740 | if (NILP (buf)) return Qnil; |
741 | ||
99784d63 | 742 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 743 | { |
99784d63 | 744 | proc = Fcdr (XCAR (tail)); |
bcd69aea | 745 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
746 | return proc; |
747 | } | |
748 | return Qnil; | |
749 | } | |
750 | ||
ebb9e16f JB |
751 | /* This is how commands for the user decode process arguments. It |
752 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
753 | Buffers denote the first process in the buffer, and nil denotes the | |
754 | current buffer. */ | |
d0d6b7c5 | 755 | |
77b221b1 | 756 | static Lisp_Object |
d0d6b7c5 JB |
757 | get_process (name) |
758 | register Lisp_Object name; | |
759 | { | |
1619761d KH |
760 | register Lisp_Object proc, obj; |
761 | if (STRINGP (name)) | |
762 | { | |
763 | obj = Fget_process (name); | |
764 | if (NILP (obj)) | |
765 | obj = Fget_buffer (name); | |
766 | if (NILP (obj)) | |
d5db4077 | 767 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
768 | } |
769 | else if (NILP (name)) | |
770 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 771 | else |
1619761d KH |
772 | obj = name; |
773 | ||
774 | /* Now obj should be either a buffer object or a process object. | |
775 | */ | |
776 | if (BUFFERP (obj)) | |
d0d6b7c5 | 777 | { |
1619761d | 778 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 779 | if (NILP (proc)) |
d5db4077 | 780 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 781 | } |
d0d6b7c5 | 782 | else |
1619761d | 783 | { |
b7826503 | 784 | CHECK_PROCESS (obj); |
1619761d KH |
785 | proc = obj; |
786 | } | |
787 | return proc; | |
d0d6b7c5 JB |
788 | } |
789 | ||
a5cfdda8 KS |
790 | |
791 | #ifdef SIGCHLD | |
792 | /* Fdelete_process promises to immediately forget about the process, but in | |
793 | reality, Emacs needs to remember those processes until they have been | |
794 | treated by sigchld_handler; otherwise this handler would consider the | |
795 | process as being synchronous and say that the synchronous process is | |
796 | dead. */ | |
797 | static Lisp_Object deleted_pid_list; | |
798 | #endif | |
799 | ||
d0d6b7c5 | 800 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
801 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
802 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
803 | nil, indicating the current buffer's process. */) | |
804 | (process) | |
4ee3e309 | 805 | register Lisp_Object process; |
d0d6b7c5 | 806 | { |
ff6daed3 KS |
807 | register struct Lisp_Process *p; |
808 | ||
4ee3e309 | 809 | process = get_process (process); |
ff6daed3 KS |
810 | p = XPROCESS (process); |
811 | ||
6bfd98e7 | 812 | p->raw_status_new = 0; |
ff6daed3 | 813 | if (NETCONN1_P (p)) |
d0d6b7c5 | 814 | { |
ff6daed3 | 815 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
60f0fb11 | 816 | p->tick = ++process_tick; |
ff6daed3 | 817 | status_notify (p); |
d0d6b7c5 | 818 | } |
60f0fb11 | 819 | else if (p->infd >= 0) |
d0d6b7c5 | 820 | { |
a5cfdda8 KS |
821 | #ifdef SIGCHLD |
822 | Lisp_Object symbol; | |
d30fe779 EZ |
823 | /* Assignment to EMACS_INT stops GCC whining about limited range |
824 | of data type. */ | |
29ed4d51 | 825 | EMACS_INT pid = p->pid; |
a5cfdda8 KS |
826 | |
827 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 828 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
829 | /* GC treated elements set to nil. */ |
830 | Fdelq (Qnil, deleted_pid_list)); | |
831 | /* If the process has already signaled, remove it from the list. */ | |
832 | if (p->raw_status_new) | |
833 | update_status (p); | |
834 | symbol = p->status; | |
835 | if (CONSP (p->status)) | |
836 | symbol = XCAR (p->status); | |
837 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
29ed4d51 CY |
838 | deleted_pid_list |
839 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
840 | else |
841 | #endif | |
842 | { | |
843 | Fkill_process (process, Qnil); | |
844 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ | |
845 | p->status | |
846 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); | |
60f0fb11 | 847 | p->tick = ++process_tick; |
a5cfdda8 KS |
848 | status_notify (p); |
849 | } | |
d0d6b7c5 | 850 | } |
116c423c | 851 | remove_process (process); |
d0d6b7c5 JB |
852 | return Qnil; |
853 | } | |
854 | \f | |
855 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
856 | doc: /* Return the status of PROCESS. |
857 | The returned value is one of the following symbols: | |
858 | run -- for a process that is running. | |
859 | stop -- for a process stopped but continuable. | |
860 | exit -- for a process that has exited. | |
861 | signal -- for a process that has got a fatal signal. | |
862 | open -- for a network stream connection that is open. | |
e690ca94 | 863 | listen -- for a network stream server that is listening. |
fdb82f93 | 864 | closed -- for a network stream connection that is closed. |
e4984112 KS |
865 | connect -- when waiting for a non-blocking connection to complete. |
866 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
867 | nil -- if arg is a process name and no such process exists. |
868 | PROCESS may be a process, a buffer, the name of a process, or | |
869 | nil, indicating the current buffer's process. */) | |
870 | (process) | |
4ee3e309 | 871 | register Lisp_Object process; |
d0d6b7c5 JB |
872 | { |
873 | register struct Lisp_Process *p; | |
874 | register Lisp_Object status; | |
343f4114 | 875 | |
4ee3e309 EN |
876 | if (STRINGP (process)) |
877 | process = Fget_process (process); | |
343f4114 | 878 | else |
4ee3e309 | 879 | process = get_process (process); |
343f4114 | 880 | |
4ee3e309 EN |
881 | if (NILP (process)) |
882 | return process; | |
343f4114 | 883 | |
4ee3e309 | 884 | p = XPROCESS (process); |
6bfd98e7 | 885 | if (p->raw_status_new) |
d0d6b7c5 JB |
886 | update_status (p); |
887 | status = p->status; | |
bcd69aea | 888 | if (CONSP (status)) |
70949dac | 889 | status = XCAR (status); |
e690ca94 | 890 | if (NETCONN1_P (p)) |
d0d6b7c5 | 891 | { |
e690ca94 | 892 | if (EQ (status, Qexit)) |
d0d6b7c5 | 893 | status = Qclosed; |
e690ca94 KS |
894 | else if (EQ (p->command, Qt)) |
895 | status = Qstop; | |
896 | else if (EQ (status, Qrun)) | |
897 | status = Qopen; | |
d0d6b7c5 JB |
898 | } |
899 | return status; | |
900 | } | |
901 | ||
902 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
903 | 1, 1, 0, | |
fdb82f93 PJ |
904 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
905 | If PROCESS has not yet exited or died, return 0. */) | |
906 | (process) | |
4ee3e309 | 907 | register Lisp_Object process; |
d0d6b7c5 | 908 | { |
b7826503 | 909 | CHECK_PROCESS (process); |
6bfd98e7 | 910 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 EN |
911 | update_status (XPROCESS (process)); |
912 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 913 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
914 | return make_number (0); |
915 | } | |
916 | ||
917 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 918 | doc: /* Return the process id of PROCESS. |
f3d9532b | 919 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 PJ |
920 | For a network connection, this value is nil. */) |
921 | (process) | |
4ee3e309 | 922 | register Lisp_Object process; |
d0d6b7c5 | 923 | { |
d30fe779 EZ |
924 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
925 | data type. */ | |
926 | EMACS_INT pid; | |
927 | ||
b7826503 | 928 | CHECK_PROCESS (process); |
d30fe779 EZ |
929 | pid = XPROCESS (process)->pid; |
930 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
931 | } |
932 | ||
933 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
934 | doc: /* Return the name of PROCESS, as a string. |
935 | This is the name of the program invoked in PROCESS, | |
936 | possibly modified to make it unique among process names. */) | |
937 | (process) | |
4ee3e309 | 938 | register Lisp_Object process; |
d0d6b7c5 | 939 | { |
b7826503 | 940 | CHECK_PROCESS (process); |
4ee3e309 | 941 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
942 | } |
943 | ||
944 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
945 | doc: /* Return the command that was executed to start PROCESS. |
946 | This is a list of strings, the first string being the program executed | |
947 | and the rest of the strings being the arguments given to it. | |
948 | For a non-child channel, this is nil. */) | |
949 | (process) | |
4ee3e309 | 950 | register Lisp_Object process; |
d0d6b7c5 | 951 | { |
b7826503 | 952 | CHECK_PROCESS (process); |
4ee3e309 | 953 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
954 | } |
955 | ||
3b9a3dfa | 956 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
957 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
958 | This is the terminal that the process itself reads and writes on, | |
959 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
960 | (process) | |
4ee3e309 | 961 | register Lisp_Object process; |
3b9a3dfa | 962 | { |
b7826503 | 963 | CHECK_PROCESS (process); |
4ee3e309 | 964 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
965 | } |
966 | ||
d0d6b7c5 | 967 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
968 | 2, 2, 0, |
969 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
970 | (process, buffer) | |
4ee3e309 | 971 | register Lisp_Object process, buffer; |
d0d6b7c5 | 972 | { |
e690ca94 KS |
973 | struct Lisp_Process *p; |
974 | ||
b7826503 | 975 | CHECK_PROCESS (process); |
d0d6b7c5 | 976 | if (!NILP (buffer)) |
b7826503 | 977 | CHECK_BUFFER (buffer); |
e690ca94 KS |
978 | p = XPROCESS (process); |
979 | p->buffer = buffer; | |
980 | if (NETCONN1_P (p)) | |
981 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); | |
03f04413 | 982 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
983 | return buffer; |
984 | } | |
985 | ||
986 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
987 | 1, 1, 0, |
988 | doc: /* Return the buffer PROCESS is associated with. | |
989 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
990 | (process) | |
4ee3e309 | 991 | register Lisp_Object process; |
d0d6b7c5 | 992 | { |
b7826503 | 993 | CHECK_PROCESS (process); |
4ee3e309 | 994 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
995 | } |
996 | ||
997 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
998 | 1, 1, 0, |
999 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
1000 | (process) | |
4ee3e309 | 1001 | register Lisp_Object process; |
d0d6b7c5 | 1002 | { |
b7826503 | 1003 | CHECK_PROCESS (process); |
4ee3e309 | 1004 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
1005 | } |
1006 | ||
1007 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
1008 | 2, 2, 0, |
1009 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 1010 | A value of t means stop accepting output from the process. |
3452df9e KS |
1011 | |
1012 | When a process has a filter, its buffer is not used for output. | |
1013 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 1014 | passed to the filter. |
3452df9e | 1015 | |
fdb82f93 | 1016 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
1017 | The string argument is normally a multibyte string, except: |
1018 | - if the process' input coding system is no-conversion or raw-text, | |
1019 | it is a unibyte string (the non-converted input), or else | |
1020 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
1021 | string (the result of converting the decoded input multibyte | |
1022 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 1023 | (process, filter) |
4ee3e309 | 1024 | register Lisp_Object process, filter; |
d0d6b7c5 | 1025 | { |
471f86b9 | 1026 | struct Lisp_Process *p; |
177c0ea7 | 1027 | |
b7826503 | 1028 | CHECK_PROCESS (process); |
471f86b9 GM |
1029 | p = XPROCESS (process); |
1030 | ||
1031 | /* Don't signal an error if the process' input file descriptor | |
1032 | is closed. This could make debugging Lisp more difficult, | |
1033 | for example when doing something like | |
1034 | ||
1035 | (setq process (start-process ...)) | |
1036 | (debug) | |
1037 | (set-process-filter process ...) */ | |
177c0ea7 | 1038 | |
60f0fb11 | 1039 | if (p->infd >= 0) |
a69281ff | 1040 | { |
e690ca94 | 1041 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 1042 | { |
60f0fb11 SM |
1043 | FD_CLR (p->infd, &input_wait_mask); |
1044 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1045 | } |
e690ca94 KS |
1046 | else if (EQ (p->filter, Qt) |
1047 | && !EQ (p->command, Qt)) /* Network process not stopped. */ | |
471f86b9 | 1048 | { |
60f0fb11 SM |
1049 | FD_SET (p->infd, &input_wait_mask); |
1050 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1051 | } |
a69281ff | 1052 | } |
177c0ea7 | 1053 | |
471f86b9 | 1054 | p->filter = filter; |
e690ca94 KS |
1055 | if (NETCONN1_P (p)) |
1056 | p->childp = Fplist_put (p->childp, QCfilter, filter); | |
03f04413 | 1057 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1058 | return filter; |
1059 | } | |
1060 | ||
1061 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1062 | 1, 1, 0, |
1063 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1064 | See `set-process-filter' for more info on filter functions. */) | |
1065 | (process) | |
4ee3e309 | 1066 | register Lisp_Object process; |
d0d6b7c5 | 1067 | { |
b7826503 | 1068 | CHECK_PROCESS (process); |
4ee3e309 | 1069 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1070 | } |
1071 | ||
1072 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1073 | 2, 2, 0, |
1074 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1075 | The sentinel is called as a function when the process changes state. | |
1076 | It gets two arguments: the process, and a string describing the change. */) | |
1077 | (process, sentinel) | |
4ee3e309 | 1078 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 1079 | { |
2ccf3102 KS |
1080 | struct Lisp_Process *p; |
1081 | ||
b7826503 | 1082 | CHECK_PROCESS (process); |
2ccf3102 KS |
1083 | p = XPROCESS (process); |
1084 | ||
1085 | p->sentinel = sentinel; | |
1086 | if (NETCONN1_P (p)) | |
1087 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); | |
d0d6b7c5 JB |
1088 | return sentinel; |
1089 | } | |
1090 | ||
1091 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1092 | 1, 1, 0, |
1093 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1094 | See `set-process-sentinel' for more info on sentinels. */) | |
1095 | (process) | |
4ee3e309 | 1096 | register Lisp_Object process; |
d0d6b7c5 | 1097 | { |
b7826503 | 1098 | CHECK_PROCESS (process); |
4ee3e309 | 1099 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1100 | } |
1101 | ||
396df322 | 1102 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1103 | Sset_process_window_size, 3, 3, 0, |
1104 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
1105 | (process, height, width) | |
4ee3e309 | 1106 | register Lisp_Object process, height, width; |
396df322 | 1107 | { |
b7826503 PJ |
1108 | CHECK_PROCESS (process); |
1109 | CHECK_NATNUM (height); | |
1110 | CHECK_NATNUM (width); | |
177c0ea7 | 1111 | |
60f0fb11 SM |
1112 | if (XPROCESS (process)->infd < 0 |
1113 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1114 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1115 | return Qnil; |
1116 | else | |
1117 | return Qt; | |
1118 | } | |
1119 | ||
52a1b894 | 1120 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1121 | Fset_process_inherit_coding_system_flag, |
1122 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1123 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1124 | If the second argument FLAG is non-nil, then the variable | |
1125 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1126 | will be bound to the value of the coding system used to decode | |
1127 | the process output. | |
1128 | ||
1129 | This is useful when the coding system specified for the process buffer | |
1130 | leaves either the character code conversion or the end-of-line conversion | |
1131 | unspecified, or if the coding system used to decode the process output | |
1132 | is more appropriate for saving the process buffer. | |
1133 | ||
1134 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1135 | starting the process is an alternative way of setting the inherit flag | |
1136 | for the process which will run. */) | |
1137 | (process, flag) | |
52a1b894 EZ |
1138 | register Lisp_Object process, flag; |
1139 | { | |
b7826503 | 1140 | CHECK_PROCESS (process); |
60f0fb11 | 1141 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1142 | return flag; |
1143 | } | |
1144 | ||
1145 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1146 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1147 | 1, 1, 0, | |
1148 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1149 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1150 | associated with PROCESS will inherit the coding system used to decode | |
1151 | the process output. */) | |
1152 | (process) | |
52a1b894 EZ |
1153 | register Lisp_Object process; |
1154 | { | |
b7826503 | 1155 | CHECK_PROCESS (process); |
60f0fb11 | 1156 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; |
52a1b894 EZ |
1157 | } |
1158 | ||
e690ca94 KS |
1159 | DEFUN ("set-process-query-on-exit-flag", |
1160 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1161 | 2, 2, 0, | |
1162 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1163 | If the second argument FLAG is non-nil, Emacs will query the user before |
e690ca94 KS |
1164 | exiting if PROCESS is running. */) |
1165 | (process, flag) | |
1166 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1167 | { |
b7826503 | 1168 | CHECK_PROCESS (process); |
60f0fb11 | 1169 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1170 | return flag; |
d0d6b7c5 | 1171 | } |
312c9964 | 1172 | |
e690ca94 KS |
1173 | DEFUN ("process-query-on-exit-flag", |
1174 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1175 | 1, 1, 0, |
f3d9532b | 1176 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
fdb82f93 | 1177 | (process) |
de282a05 RS |
1178 | register Lisp_Object process; |
1179 | { | |
b7826503 | 1180 | CHECK_PROCESS (process); |
60f0fb11 | 1181 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1182 | } |
1183 | ||
1184 | #ifdef DATAGRAM_SOCKETS | |
1185 | Lisp_Object Fprocess_datagram_address (); | |
1186 | #endif | |
1187 | ||
1188 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1189 | 1, 2, 0, | |
1190 | doc: /* Return the contact info of PROCESS; t for a real child. | |
1191 | For a net connection, the value depends on the optional KEY arg. | |
1192 | If KEY is nil, value is a cons cell of the form (HOST SERVICE), | |
1193 | if KEY is t, the complete contact information for the connection is | |
1194 | returned, else the specific value for the keyword KEY is returned. | |
1195 | See `make-network-process' for a list of keywords. */) | |
1196 | (process, key) | |
1197 | register Lisp_Object process, key; | |
1198 | { | |
1199 | Lisp_Object contact; | |
1200 | ||
1201 | CHECK_PROCESS (process); | |
1202 | contact = XPROCESS (process)->childp; | |
1203 | ||
1204 | #ifdef DATAGRAM_SOCKETS | |
1205 | if (DATAGRAM_CONN_P (process) | |
1206 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1207 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1208 | Fprocess_datagram_address (process)); |
1209 | #endif | |
1210 | ||
1211 | if (!NETCONN_P (process) || EQ (key, Qt)) | |
1212 | return contact; | |
1213 | if (NILP (key)) | |
1214 | return Fcons (Fplist_get (contact, QChost), | |
1215 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
1216 | return Fplist_get (contact, key); | |
de282a05 RS |
1217 | } |
1218 | ||
faa7db08 KS |
1219 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1220 | 1, 1, 0, | |
1221 | doc: /* Return the plist of PROCESS. */) | |
1222 | (process) | |
1223 | register Lisp_Object process; | |
365aee82 | 1224 | { |
ac4a7584 | 1225 | CHECK_PROCESS (process); |
faa7db08 | 1226 | return XPROCESS (process)->plist; |
ac4a7584 | 1227 | } |
365aee82 | 1228 | |
faa7db08 KS |
1229 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1230 | 2, 2, 0, | |
26a086c6 | 1231 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1232 | (process, plist) |
1233 | register Lisp_Object process, plist; | |
ac4a7584 | 1234 | { |
365aee82 | 1235 | CHECK_PROCESS (process); |
faa7db08 | 1236 | CHECK_LIST (plist); |
365aee82 | 1237 | |
faa7db08 | 1238 | XPROCESS (process)->plist = plist; |
26a086c6 | 1239 | return plist; |
365aee82 KS |
1240 | } |
1241 | ||
312c9964 RS |
1242 | #if 0 /* Turned off because we don't currently record this info |
1243 | in the process. Perhaps add it. */ | |
1244 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1245 | doc: /* Return the connection type of PROCESS. |
1246 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1247 | a socket connection. */) | |
1248 | (process) | |
312c9964 RS |
1249 | Lisp_Object process; |
1250 | { | |
1251 | return XPROCESS (process)->type; | |
1252 | } | |
1253 | #endif | |
991234f0 KS |
1254 | |
1255 | #ifdef HAVE_SOCKETS | |
1256 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1257 | 1, 2, 0, |
991234f0 | 1258 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1259 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1260 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1261 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1262 | number in the string, even when present in ADDRESS. |
1263 | Returns nil if format of ADDRESS is invalid. */) | |
0dccee41 KS |
1264 | (address, omit_port) |
1265 | Lisp_Object address, omit_port; | |
991234f0 | 1266 | { |
991234f0 KS |
1267 | if (NILP (address)) |
1268 | return Qnil; | |
1269 | ||
1270 | if (STRINGP (address)) /* AF_LOCAL */ | |
1271 | return address; | |
1272 | ||
e1652a86 | 1273 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1274 | { |
1275 | register struct Lisp_Vector *p = XVECTOR (address); | |
ded83665 | 1276 | Lisp_Object args[10]; |
0dccee41 | 1277 | int nargs, i; |
991234f0 | 1278 | |
e1652a86 | 1279 | if (p->size == 4 || (p->size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1280 | { |
1281 | args[0] = build_string ("%d.%d.%d.%d"); | |
1282 | nargs = 4; | |
1283 | } | |
1284 | else if (p->size == 5) | |
1285 | { | |
1286 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1287 | nargs = 5; | |
1288 | } | |
e1652a86 KS |
1289 | else if (p->size == 8 || (p->size == 9 && !NILP (omit_port))) |
1290 | { | |
1291 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1292 | nargs = 8; | |
1293 | } | |
1294 | else if (p->size == 9) | |
1295 | { | |
1296 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1297 | nargs = 9; | |
1298 | } | |
0dccee41 | 1299 | else |
991234f0 KS |
1300 | return Qnil; |
1301 | ||
0dccee41 | 1302 | for (i = 0; i < nargs; i++) |
cbf23adb JB |
1303 | { |
1304 | EMACS_INT element = XINT (p->contents[i]); | |
1305 | ||
1306 | if (element < 0 || element > 65535) | |
1307 | return Qnil; | |
1308 | ||
1309 | if (nargs <= 5 /* IPv4 */ | |
1310 | && i < 4 /* host, not port */ | |
1311 | && element > 255) | |
1312 | return Qnil; | |
1313 | ||
1314 | args[i+1] = p->contents[i]; | |
1315 | } | |
1316 | ||
0dccee41 | 1317 | return Fformat (nargs+1, args); |
991234f0 KS |
1318 | } |
1319 | ||
1320 | if (CONSP (address)) | |
1321 | { | |
1322 | Lisp_Object args[2]; | |
1323 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1324 | args[1] = Fcar (address); |
991234f0 | 1325 | return Fformat (2, args); |
991234f0 KS |
1326 | } |
1327 | ||
1328 | return Qnil; | |
1329 | } | |
1330 | #endif | |
d0d6b7c5 | 1331 | \f |
ff6daed3 | 1332 | static Lisp_Object |
e690ca94 KS |
1333 | list_processes_1 (query_only) |
1334 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1335 | { |
1336 | register Lisp_Object tail, tem; | |
1337 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1338 | register struct Lisp_Process *p; |
e690ca94 KS |
1339 | char tembuf[300]; |
1340 | int w_proc, w_buffer, w_tty; | |
1eed3bdc | 1341 | int exited = 0; |
e690ca94 KS |
1342 | Lisp_Object i_status, i_buffer, i_tty, i_command; |
1343 | ||
1344 | w_proc = 4; /* Proc */ | |
1345 | w_buffer = 6; /* Buffer */ | |
1346 | w_tty = 0; /* Omit if no ttys */ | |
1347 | ||
99784d63 | 1348 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
e690ca94 KS |
1349 | { |
1350 | int i; | |
1351 | ||
99784d63 | 1352 | proc = Fcdr (XCAR (tail)); |
e690ca94 KS |
1353 | p = XPROCESS (proc); |
1354 | if (NILP (p->childp)) | |
1355 | continue; | |
60f0fb11 | 1356 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 KS |
1357 | continue; |
1358 | if (STRINGP (p->name) | |
d5db4077 | 1359 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1360 | w_proc = i; |
1361 | if (!NILP (p->buffer)) | |
1362 | { | |
1363 | if (NILP (XBUFFER (p->buffer)->name) && w_buffer < 8) | |
1364 | w_buffer = 8; /* (Killed) */ | |
d5db4077 | 1365 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1366 | w_buffer = i; |
1367 | } | |
1368 | if (STRINGP (p->tty_name) | |
d5db4077 | 1369 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1370 | w_tty = i; |
1371 | } | |
1372 | ||
1373 | XSETFASTINT (i_status, w_proc + 1); | |
1374 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1375 | if (w_tty) | |
1376 | { | |
1377 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
1378 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_tty + 1); | |
1379 | } else { | |
1380 | i_tty = Qnil; | |
1381 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1382 | } | |
d0d6b7c5 | 1383 | |
22719df2 | 1384 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1385 | |
1386 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1387 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1388 | |
1389 | current_buffer->truncate_lines = Qt; | |
1390 | ||
e690ca94 KS |
1391 | write_string ("Proc", -1); |
1392 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1393 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1394 | if (!NILP (i_tty)) | |
1395 | { | |
1396 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1397 | } | |
1398 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1399 | write_string ("\n", -1); | |
1400 | ||
1401 | write_string ("----", -1); | |
1402 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1403 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1404 | if (!NILP (i_tty)) | |
1405 | { | |
1406 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1407 | } | |
1408 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1409 | write_string ("\n", -1); | |
d0d6b7c5 | 1410 | |
99784d63 | 1411 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 JB |
1412 | { |
1413 | Lisp_Object symbol; | |
1414 | ||
99784d63 | 1415 | proc = Fcdr (XCAR (tail)); |
d0d6b7c5 JB |
1416 | p = XPROCESS (proc); |
1417 | if (NILP (p->childp)) | |
1418 | continue; | |
60f0fb11 | 1419 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 | 1420 | continue; |
d0d6b7c5 JB |
1421 | |
1422 | Finsert (1, &p->name); | |
e690ca94 | 1423 | Findent_to (i_status, minspace); |
d0d6b7c5 | 1424 | |
6bfd98e7 | 1425 | if (p->raw_status_new) |
d0d6b7c5 JB |
1426 | update_status (p); |
1427 | symbol = p->status; | |
bcd69aea | 1428 | if (CONSP (p->status)) |
70949dac | 1429 | symbol = XCAR (p->status); |
d0d6b7c5 | 1430 | |
d0d6b7c5 JB |
1431 | if (EQ (symbol, Qsignal)) |
1432 | { | |
1433 | Lisp_Object tem; | |
1434 | tem = Fcar (Fcdr (p->status)); | |
1435 | #ifdef VMS | |
1436 | if (XINT (tem) < NSIG) | |
b0310da4 | 1437 | write_string (sys_errlist [XINT (tem)], -1); |
d0d6b7c5 JB |
1438 | else |
1439 | #endif | |
1440 | Fprinc (symbol, Qnil); | |
1441 | } | |
e690ca94 | 1442 | else if (NETCONN1_P (p)) |
d0d6b7c5 | 1443 | { |
e690ca94 | 1444 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1445 | write_string ("closed", -1); |
e690ca94 KS |
1446 | else if (EQ (p->command, Qt)) |
1447 | write_string ("stopped", -1); | |
1448 | else if (EQ (symbol, Qrun)) | |
1449 | write_string ("open", -1); | |
d0d6b7c5 JB |
1450 | else |
1451 | Fprinc (symbol, Qnil); | |
1452 | } | |
1453 | else | |
1454 | Fprinc (symbol, Qnil); | |
1455 | ||
1456 | if (EQ (symbol, Qexit)) | |
1457 | { | |
1458 | Lisp_Object tem; | |
1459 | tem = Fcar (Fcdr (p->status)); | |
1460 | if (XFASTINT (tem)) | |
1461 | { | |
3162bafa | 1462 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1463 | write_string (tembuf, -1); |
1464 | } | |
1465 | } | |
1466 | ||
1eed3bdc KS |
1467 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) || EQ (symbol, Qclosed)) |
1468 | exited++; | |
d0d6b7c5 | 1469 | |
e690ca94 | 1470 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1471 | if (NILP (p->buffer)) |
1472 | insert_string ("(none)"); | |
1473 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1474 | insert_string ("(Killed)"); | |
1475 | else | |
1476 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1477 | ||
e690ca94 KS |
1478 | if (!NILP (i_tty)) |
1479 | { | |
1480 | Findent_to (i_tty, minspace); | |
1481 | if (STRINGP (p->tty_name)) | |
1482 | Finsert (1, &p->tty_name); | |
1483 | } | |
a9fde32e | 1484 | |
e690ca94 | 1485 | Findent_to (i_command, minspace); |
a9fde32e | 1486 | |
e690ca94 KS |
1487 | if (EQ (p->status, Qlisten)) |
1488 | { | |
1489 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1490 | if (INTEGERP (port)) | |
1491 | port = Fnumber_to_string (port); | |
991234f0 | 1492 | if (NILP (port)) |
0dccee41 | 1493 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1494 | sprintf (tembuf, "(network %s server on %s)\n", |
60f0fb11 | 1495 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1496 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1497 | insert_string (tembuf); |
1498 | } | |
1499 | else if (NETCONN1_P (p)) | |
d0d6b7c5 | 1500 | { |
e690ca94 KS |
1501 | /* For a local socket, there is no host name, |
1502 | so display service instead. */ | |
1503 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1504 | if (!STRINGP (host)) | |
1505 | { | |
1506 | host = Fplist_get (p->childp, QCservice); | |
1507 | if (INTEGERP (host)) | |
1508 | host = Fnumber_to_string (host); | |
1509 | } | |
991234f0 | 1510 | if (NILP (host)) |
0dccee41 | 1511 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1512 | sprintf (tembuf, "(network %s connection to %s)\n", |
60f0fb11 | 1513 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1514 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 JB |
1515 | insert_string (tembuf); |
1516 | } | |
177c0ea7 | 1517 | else |
d0d6b7c5 JB |
1518 | { |
1519 | tem = p->command; | |
1520 | while (1) | |
1521 | { | |
1522 | tem1 = Fcar (tem); | |
1523 | Finsert (1, &tem1); | |
1524 | tem = Fcdr (tem); | |
1525 | if (NILP (tem)) | |
1526 | break; | |
1527 | insert_string (" "); | |
1528 | } | |
1529 | insert_string ("\n"); | |
1530 | } | |
1531 | } | |
1eed3bdc KS |
1532 | if (exited) |
1533 | status_notify (NULL); | |
d0d6b7c5 JB |
1534 | return Qnil; |
1535 | } | |
1536 | ||
e690ca94 | 1537 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1538 | doc: /* Display a list of all processes. |
e690ca94 KS |
1539 | If optional argument QUERY-ONLY is non-nil, only processes with |
1540 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1541 | Any process listed as exited or signaled is actually eliminated |
1542 | after the listing is made. */) | |
e690ca94 KS |
1543 | (query_only) |
1544 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1545 | { |
1546 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1547 | list_processes_1, query_only); |
d0d6b7c5 JB |
1548 | return Qnil; |
1549 | } | |
1550 | ||
1551 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1552 | doc: /* Return a list of all processes. */) |
1553 | () | |
d0d6b7c5 JB |
1554 | { |
1555 | return Fmapcar (Qcdr, Vprocess_alist); | |
1556 | } | |
1557 | \f | |
b0310da4 JB |
1558 | /* Starting asynchronous inferior processes. */ |
1559 | ||
1560 | static Lisp_Object start_process_unwind (); | |
1561 | ||
d0d6b7c5 | 1562 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1563 | doc: /* Start a program in a subprocess. Return the process object for it. |
1564 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1565 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1566 | |
1567 | Process output (both standard output and standard error streams) goes | |
1568 | at end of BUFFER, unless you specify an output stream or filter | |
1569 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1570 | this process is not associated with any buffer. |
1571 | ||
553acde5 | 1572 | PROGRAM is the program file name. It is searched for in PATH. |
3ecdf100 | 1573 | Remaining arguments are strings to give program as arguments. |
320aebc9 | 1574 | |
4b6c5eee EZ |
1575 | If you want to separate standard output from standard error, invoke |
1576 | the command through a shell and redirect one of them using the shell | |
1577 | syntax. | |
320aebc9 | 1578 | |
3ecdf100 | 1579 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1580 | (nargs, args) |
d0d6b7c5 JB |
1581 | int nargs; |
1582 | register Lisp_Object *args; | |
1583 | { | |
1e30af70 | 1584 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 JB |
1585 | #ifdef VMS |
1586 | register unsigned char *new_argv; | |
1587 | int len; | |
1588 | #else | |
1589 | register unsigned char **new_argv; | |
1590 | #endif | |
1591 | register int i; | |
aed13378 | 1592 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1593 | |
1594 | buffer = args[1]; | |
1595 | if (!NILP (buffer)) | |
1596 | buffer = Fget_buffer_create (buffer); | |
1597 | ||
1e30af70 JB |
1598 | /* Make sure that the child will be able to chdir to the current |
1599 | buffer's current directory, or its unhandled equivalent. We | |
1600 | can't just have the child check for an error when it does the | |
1601 | chdir, since it's in a vfork. | |
1602 | ||
1603 | We have to GCPRO around this because Fexpand_file_name and | |
1604 | Funhandled_file_name_directory might call a file name handling | |
1605 | function. The argument list is protected by the caller, so all | |
1606 | we really have to worry about is buffer. */ | |
1607 | { | |
1608 | struct gcpro gcpro1, gcpro2; | |
1609 | ||
1610 | current_dir = current_buffer->directory; | |
1611 | ||
1612 | GCPRO2 (buffer, current_dir); | |
1613 | ||
177c0ea7 | 1614 | current_dir |
7af71e17 RS |
1615 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), |
1616 | Qnil); | |
1e30af70 JB |
1617 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1618 | report_file_error ("Setting current directory", | |
1619 | Fcons (current_buffer->directory, Qnil)); | |
1620 | ||
1621 | UNGCPRO; | |
1622 | } | |
1623 | ||
d0d6b7c5 | 1624 | name = args[0]; |
b7826503 | 1625 | CHECK_STRING (name); |
d0d6b7c5 JB |
1626 | |
1627 | program = args[2]; | |
1628 | ||
b7826503 | 1629 | CHECK_STRING (program); |
d0d6b7c5 | 1630 | |
d0d6b7c5 | 1631 | proc = make_process (name); |
b0310da4 JB |
1632 | /* If an error occurs and we can't start the process, we want to |
1633 | remove it from the process list. This means that each error | |
1634 | check in create_process doesn't need to call remove_process | |
1635 | itself; it's all taken care of here. */ | |
1636 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1637 | |
1638 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1639 | XPROCESS (proc)->plist = Qnil; |
d0d6b7c5 JB |
1640 | XPROCESS (proc)->buffer = buffer; |
1641 | XPROCESS (proc)->sentinel = Qnil; | |
1642 | XPROCESS (proc)->filter = Qnil; | |
03f04413 | 1643 | XPROCESS (proc)->filter_multibyte |
60f0fb11 | 1644 | = !NILP (buffer_defaults.enable_multibyte_characters); |
d0d6b7c5 JB |
1645 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); |
1646 | ||
2d942bfa | 1647 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1648 | XPROCESS (proc)->adaptive_read_buffering |
1649 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1650 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
2d942bfa KS |
1651 | #endif |
1652 | ||
7af71e17 | 1653 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1654 | if (BUFFERP (buffer)) |
d8a2934e RS |
1655 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1656 | BUF_ZV (XBUFFER (buffer)), | |
1657 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1658 | |
67918941 | 1659 | { |
d5d4ae71 KH |
1660 | /* Decide coding systems for communicating with the process. Here |
1661 | we don't setup the structure coding_system nor pay attention to | |
1662 | unibyte mode. They are done in create_process. */ | |
1663 | ||
67918941 RS |
1664 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1665 | Lisp_Object coding_systems = Qt; | |
1666 | Lisp_Object val, *args2; | |
a4a37e65 | 1667 | struct gcpro gcpro1, gcpro2; |
67918941 | 1668 | |
d5d4ae71 KH |
1669 | val = Vcoding_system_for_read; |
1670 | if (NILP (val)) | |
67918941 RS |
1671 | { |
1672 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1673 | args2[0] = Qstart_process; | |
1674 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1675 | GCPRO2 (proc, current_dir); |
67918941 RS |
1676 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1677 | UNGCPRO; | |
1678 | if (CONSP (coding_systems)) | |
70949dac | 1679 | val = XCAR (coding_systems); |
67918941 | 1680 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1681 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1682 | } |
1683 | XPROCESS (proc)->decode_coding_system = val; | |
1684 | ||
d5d4ae71 KH |
1685 | val = Vcoding_system_for_write; |
1686 | if (NILP (val)) | |
67918941 RS |
1687 | { |
1688 | if (EQ (coding_systems, Qt)) | |
1689 | { | |
1690 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1691 | args2[0] = Qstart_process; | |
1692 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1693 | GCPRO2 (proc, current_dir); |
67918941 RS |
1694 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1695 | UNGCPRO; | |
1696 | } | |
1697 | if (CONSP (coding_systems)) | |
70949dac | 1698 | val = XCDR (coding_systems); |
67918941 | 1699 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1700 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1701 | } |
1702 | XPROCESS (proc)->encode_coding_system = val; | |
1703 | } | |
0fa1789e | 1704 | |
a4a37e65 KH |
1705 | #ifdef VMS |
1706 | /* Make a one member argv with all args concatenated | |
1707 | together separated by a blank. */ | |
d5db4077 | 1708 | len = SBYTES (program) + 2; |
a4a37e65 KH |
1709 | for (i = 3; i < nargs; i++) |
1710 | { | |
1711 | tem = args[i]; | |
b7826503 | 1712 | CHECK_STRING (tem); |
d5db4077 | 1713 | len += SBYTES (tem) + 1; /* count the blank */ |
a4a37e65 KH |
1714 | } |
1715 | new_argv = (unsigned char *) alloca (len); | |
d5db4077 | 1716 | strcpy (new_argv, SDATA (program)); |
a4a37e65 KH |
1717 | for (i = 3; i < nargs; i++) |
1718 | { | |
1719 | tem = args[i]; | |
b7826503 | 1720 | CHECK_STRING (tem); |
a4a37e65 | 1721 | strcat (new_argv, " "); |
d5db4077 | 1722 | strcat (new_argv, SDATA (tem)); |
a4a37e65 KH |
1723 | } |
1724 | /* Need to add code here to check for program existence on VMS */ | |
177c0ea7 | 1725 | |
a4a37e65 KH |
1726 | #else /* not VMS */ |
1727 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1728 | ||
ed30cf85 RS |
1729 | /* If program file name is not absolute, search our path for it. |
1730 | Put the name we will really use in TEM. */ | |
d5db4077 KR |
1731 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) |
1732 | && !(SCHARS (program) > 1 | |
1733 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
a4a37e65 KH |
1734 | { |
1735 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1736 | ||
1737 | tem = Qnil; | |
1738 | GCPRO4 (name, program, buffer, current_dir); | |
cc4db0c7 | 1739 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); |
a4a37e65 KH |
1740 | UNGCPRO; |
1741 | if (NILP (tem)) | |
1742 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1743 | tem = Fexpand_file_name (tem, Qnil); | |
a4a37e65 KH |
1744 | } |
1745 | else | |
1746 | { | |
1747 | if (!NILP (Ffile_directory_p (program))) | |
1748 | error ("Specified program for new process is a directory"); | |
ed30cf85 | 1749 | tem = program; |
a4a37e65 KH |
1750 | } |
1751 | ||
ed30cf85 RS |
1752 | /* If program file name starts with /: for quoting a magic name, |
1753 | discard that. */ | |
1754 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1755 | && SREF (tem, 1) == ':') | |
1756 | tem = Fsubstring (tem, make_number (2), Qnil); | |
1757 | ||
1758 | /* Encode the file name and put it in NEW_ARGV. | |
1759 | That's where the child will use it to execute the program. */ | |
1760 | tem = ENCODE_FILE (tem); | |
1761 | new_argv[0] = SDATA (tem); | |
1762 | ||
a4a37e65 KH |
1763 | /* Here we encode arguments by the coding system used for sending |
1764 | data to the process. We don't support using different coding | |
1765 | systems for encoding arguments and for encoding data sent to the | |
1766 | process. */ | |
1767 | ||
1768 | for (i = 3; i < nargs; i++) | |
1769 | { | |
1770 | tem = args[i]; | |
b7826503 | 1771 | CHECK_STRING (tem); |
a4a37e65 KH |
1772 | if (STRING_MULTIBYTE (tem)) |
1773 | tem = (code_convert_string_norecord | |
1774 | (tem, XPROCESS (proc)->encode_coding_system, 1)); | |
d5db4077 | 1775 | new_argv[i - 2] = SDATA (tem); |
a4a37e65 KH |
1776 | } |
1777 | new_argv[i - 2] = 0; | |
1778 | #endif /* not VMS */ | |
1779 | ||
0fa1789e | 1780 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
60f0fb11 | 1781 | XPROCESS (proc)->decoding_carryover = 0; |
0fa1789e KH |
1782 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); |
1783 | ||
52a1b894 | 1784 | XPROCESS (proc)->inherit_coding_system_flag |
e6fca843 | 1785 | = !(NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 1786 | |
6b53bb85 | 1787 | create_process (proc, (char **) new_argv, current_dir); |
d0d6b7c5 | 1788 | |
b0310da4 | 1789 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1790 | } |
1791 | ||
b0310da4 | 1792 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1793 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1794 | an error and the process wasn't started successfully, so we should |
1795 | remove it from the process list. */ | |
1796 | static Lisp_Object | |
1797 | start_process_unwind (proc) | |
1798 | Lisp_Object proc; | |
1799 | { | |
bcd69aea | 1800 | if (!PROCESSP (proc)) |
b0310da4 JB |
1801 | abort (); |
1802 | ||
1803 | /* Was PROC started successfully? */ | |
6bfd98e7 | 1804 | if (XPROCESS (proc)->pid <= 0) |
b0310da4 JB |
1805 | remove_process (proc); |
1806 | ||
1807 | return Qnil; | |
1808 | } | |
1809 | ||
ff6daed3 | 1810 | static void |
30904ab7 GM |
1811 | create_process_1 (timer) |
1812 | struct atimer *timer; | |
d0d6b7c5 | 1813 | { |
30904ab7 | 1814 | /* Nothing to do. */ |
d0d6b7c5 JB |
1815 | } |
1816 | ||
30904ab7 | 1817 | |
d0d6b7c5 JB |
1818 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1819 | #ifdef USG | |
1820 | #ifdef SIGCHLD | |
1821 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1822 | ||
1823 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1824 | int sigchld_deferred; | |
1825 | ||
1826 | SIGTYPE | |
1827 | create_process_sigchld () | |
1828 | { | |
1829 | signal (SIGCHLD, create_process_sigchld); | |
1830 | ||
1831 | sigchld_deferred = 1; | |
1832 | } | |
1833 | #endif | |
1834 | #endif | |
1835 | #endif | |
1836 | ||
1837 | #ifndef VMS /* VMS version of this function is in vmsproc.c. */ | |
6b53bb85 | 1838 | void |
1e30af70 | 1839 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1840 | Lisp_Object process; |
1841 | char **new_argv; | |
1e30af70 | 1842 | Lisp_Object current_dir; |
d0d6b7c5 | 1843 | { |
29ed4d51 CY |
1844 | int inchannel, outchannel; |
1845 | pid_t pid; | |
d0d6b7c5 | 1846 | int sv[2]; |
0dc70c33 KH |
1847 | #ifdef POSIX_SIGNALS |
1848 | sigset_t procmask; | |
1849 | sigset_t blocked; | |
1850 | struct sigaction sigint_action; | |
1851 | struct sigaction sigquit_action; | |
1852 | #ifdef AIX | |
1853 | struct sigaction sighup_action; | |
1854 | #endif | |
1855 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1856 | #if 0 |
d0d6b7c5 JB |
1857 | #ifdef SIGCHLD |
1858 | SIGTYPE (*sigchld)(); | |
1859 | #endif | |
41d03b9a | 1860 | #endif /* 0 */ |
0dc70c33 | 1861 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1862 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1863 | volatile int forkin, forkout; | |
1864 | volatile int pty_flag = 0; | |
3ec68006 | 1865 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1866 | extern char **environ; |
3ec68006 | 1867 | #endif |
d0d6b7c5 | 1868 | |
d0d6b7c5 JB |
1869 | inchannel = outchannel = -1; |
1870 | ||
1871 | #ifdef HAVE_PTYS | |
fe45da4e | 1872 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1873 | outchannel = inchannel = allocate_pty (); |
1874 | ||
d0d6b7c5 JB |
1875 | if (inchannel >= 0) |
1876 | { | |
2af70a0c RS |
1877 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1878 | /* On most USG systems it does not work to open the pty's tty here, | |
1879 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1880 | #ifdef O_NOCTTY |
1881 | /* Don't let this terminal become our controlling terminal | |
1882 | (in case we don't have one). */ | |
68c45bf0 | 1883 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1884 | #else |
68c45bf0 | 1885 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1886 | #endif |
1887 | if (forkin < 0) | |
1888 | report_file_error ("Opening pty", Qnil); | |
21375f1e YM |
1889 | #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY) |
1890 | /* In the case that vfork is defined as fork, the parent process | |
1891 | (Emacs) may send some data before the child process completes | |
1892 | tty options setup. So we setup tty before forking. */ | |
1893 | child_setup_tty (forkout); | |
1894 | #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */ | |
d0d6b7c5 JB |
1895 | #else |
1896 | forkin = forkout = -1; | |
2af70a0c | 1897 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1898 | pty_flag = 1; |
1899 | } | |
1900 | else | |
1901 | #endif /* HAVE_PTYS */ | |
1902 | #ifdef SKTPAIR | |
1903 | { | |
1904 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv) < 0) | |
1905 | report_file_error ("Opening socketpair", Qnil); | |
1906 | outchannel = inchannel = sv[0]; | |
1907 | forkout = forkin = sv[1]; | |
1908 | } | |
1909 | #else /* not SKTPAIR */ | |
1910 | { | |
fc14013c KH |
1911 | int tem; |
1912 | tem = pipe (sv); | |
1913 | if (tem < 0) | |
1914 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1915 | inchannel = sv[0]; |
1916 | forkout = sv[1]; | |
fc14013c KH |
1917 | tem = pipe (sv); |
1918 | if (tem < 0) | |
1919 | { | |
68c45bf0 PE |
1920 | emacs_close (inchannel); |
1921 | emacs_close (forkout); | |
fc14013c KH |
1922 | report_file_error ("Creating pipe", Qnil); |
1923 | } | |
d0d6b7c5 JB |
1924 | outchannel = sv[1]; |
1925 | forkin = sv[0]; | |
1926 | } | |
1927 | #endif /* not SKTPAIR */ | |
1928 | ||
1929 | #if 0 | |
1930 | /* Replaced by close_process_descs */ | |
1931 | set_exclusive_use (inchannel); | |
1932 | set_exclusive_use (outchannel); | |
1933 | #endif | |
1934 | ||
1935 | /* Stride people say it's a mystery why this is needed | |
1936 | as well as the O_NDELAY, but that it fails without this. */ | |
1937 | #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) | |
1938 | { | |
1939 | int one = 1; | |
1940 | ioctl (inchannel, FIONBIO, &one); | |
1941 | } | |
1942 | #endif | |
1943 | ||
1944 | #ifdef O_NONBLOCK | |
1945 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1946 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1947 | #else |
1948 | #ifdef O_NDELAY | |
1949 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1950 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1951 | #endif |
1952 | #endif | |
1953 | ||
1954 | /* Record this as an active process, with its channels. | |
1955 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1956 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1957 | XPROCESS (process)->infd = inchannel; |
1958 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1959 | |
1960 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1961 | It was only used for getting the foreground tty process, so now | |
1962 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1963 | more portable (see USG_SUBTTY_WORKS above). */ | |
1964 | ||
60f0fb11 | 1965 | XPROCESS (process)->pty_flag = pty_flag; |
d0d6b7c5 | 1966 | XPROCESS (process)->status = Qrun; |
03f04413 | 1967 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1968 | |
1969 | /* Delay interrupts until we have a chance to store | |
1970 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1971 | #ifdef POSIX_SIGNALS |
1972 | sigemptyset (&blocked); | |
1973 | #ifdef SIGCHLD | |
1974 | sigaddset (&blocked, SIGCHLD); | |
1975 | #endif | |
351e611f | 1976 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1977 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1978 | this sets the parent's signal handlers as well as the child's. | |
1979 | So delay all interrupts whose handlers the child might munge, | |
1980 | and record the current handlers so they can be restored later. */ | |
1981 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1982 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1983 | #ifdef AIX | |
1984 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1985 | #endif | |
351e611f | 1986 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
1987 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
1988 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
1989 | #ifdef SIGCHLD |
1990 | #ifdef BSD4_1 | |
1991 | sighold (SIGCHLD); | |
1992 | #else /* not BSD4_1 */ | |
6df54671 | 1993 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
1994 | sigsetmask (sigmask (SIGCHLD)); |
1995 | #else /* ordinary USG */ | |
1996 | #if 0 | |
1997 | sigchld_deferred = 0; | |
1998 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
1999 | #endif | |
2000 | #endif /* ordinary USG */ | |
2001 | #endif /* not BSD4_1 */ | |
2002 | #endif /* SIGCHLD */ | |
0dc70c33 | 2003 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 2004 | |
3081bf8d | 2005 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 2006 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
2007 | if (inchannel > max_process_desc) |
2008 | max_process_desc = inchannel; | |
2009 | ||
d0d6b7c5 JB |
2010 | /* Until we store the proper pid, enable sigchld_handler |
2011 | to recognize an unknown pid as standing for this process. | |
2012 | It is very important not to let this `marker' value stay | |
2013 | in the table after this function has returned; if it does | |
2014 | it might cause call-process to hang and subsequent asynchronous | |
2015 | processes to get their return values scrambled. */ | |
6bfd98e7 | 2016 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 2017 | |
ececcbec | 2018 | BLOCK_INPUT; |
177c0ea7 | 2019 | |
d0d6b7c5 JB |
2020 | { |
2021 | /* child_setup must clobber environ on systems with true vfork. | |
2022 | Protect it from permanent change. */ | |
2023 | char **save_environ = environ; | |
2024 | ||
14dc6093 | 2025 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 2026 | |
e98d950b | 2027 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
2028 | pid = vfork (); |
2029 | if (pid == 0) | |
e98d950b | 2030 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2031 | { |
2032 | int xforkin = forkin; | |
2033 | int xforkout = forkout; | |
2034 | ||
2035 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
2036 | but fails to handle all the cases. */ | |
2037 | /* Make sure SIGCHLD is not blocked in the child. */ | |
2038 | sigsetmask (SIGEMPTYMASK); | |
2039 | #endif | |
2040 | ||
2041 | /* Make the pty be the controlling terminal of the process. */ | |
2042 | #ifdef HAVE_PTYS | |
2043 | /* First, disconnect its current controlling terminal. */ | |
2044 | #ifdef HAVE_SETSID | |
7ce48618 RS |
2045 | /* We tried doing setsid only if pty_flag, but it caused |
2046 | process_set_signal to fail on SGI when using a pipe. */ | |
2047 | setsid (); | |
ce4c9c90 | 2048 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 2049 | if (pty_flag) |
39e9ebcd | 2050 | { |
39e9ebcd RS |
2051 | #ifdef TIOCSCTTY |
2052 | /* We ignore the return value | |
2053 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
2054 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 2055 | #endif |
39e9ebcd | 2056 | } |
d0d6b7c5 | 2057 | #else /* not HAVE_SETSID */ |
c14e53a4 | 2058 | #ifdef USG |
000ab717 | 2059 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
2060 | afterwards. Otherwise, we lose our controlling tty which |
2061 | is set when we open the pty. */ | |
2062 | setpgrp (); | |
2063 | #endif /* USG */ | |
2064 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
2065 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
2066 | if (pty_flag && xforkin >= 0) | |
2067 | { | |
2068 | struct termios t; | |
2069 | tcgetattr (xforkin, &t); | |
2070 | t.c_lflag = LDISC1; | |
2071 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 2072 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
2073 | } |
2074 | #else | |
aafadd9f | 2075 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 2076 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
2077 | { |
2078 | /* Use new line discipline. */ | |
2079 | int ldisc = NTTYDISC; | |
4458f555 | 2080 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 2081 | } |
000ab717 | 2082 | #endif |
9bcf8ec6 | 2083 | #endif |
177c0ea7 | 2084 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
2085 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
2086 | can do TIOCSPGRP only to the process's controlling tty. */ | |
2087 | if (pty_flag) | |
2088 | { | |
177c0ea7 | 2089 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 2090 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 2091 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 2092 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 2093 | emacs_close (j); |
5a570e37 | 2094 | #ifndef USG |
d0d6b7c5 JB |
2095 | /* In order to get a controlling terminal on some versions |
2096 | of BSD, it is necessary to put the process in pgrp 0 | |
2097 | before it opens the terminal. */ | |
99c1aeca | 2098 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
2099 | setpgid (0, 0); |
2100 | #else | |
d0d6b7c5 | 2101 | setpgrp (0, 0); |
3ea1d291 | 2102 | #endif |
d0d6b7c5 JB |
2103 | #endif |
2104 | } | |
2105 | #endif /* TIOCNOTTY */ | |
2106 | ||
99153b9e | 2107 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 2108 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
2109 | conditional on TIOCSPGRP, |
2110 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
2111 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
2112 | that system does seem to need this code, even though | |
2113 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
2114 | /* Now close the pty (if we had it open) and reopen it. |
2115 | This makes the pty the controlling terminal of the subprocess. */ | |
2116 | if (pty_flag) | |
2117 | { | |
99e3d726 RS |
2118 | #ifdef SET_CHILD_PTY_PGRP |
2119 | int pgrp = getpid (); | |
2120 | #endif | |
2121 | ||
68c45bf0 PE |
2122 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2123 | would work? */ | |
d0d6b7c5 | 2124 | if (xforkin >= 0) |
68c45bf0 PE |
2125 | emacs_close (xforkin); |
2126 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2127 | |
4aa54ba8 RS |
2128 | if (xforkin < 0) |
2129 | { | |
68c45bf0 PE |
2130 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2131 | emacs_write (1, pty_name, strlen (pty_name)); | |
2132 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2133 | _exit (1); |
2134 | } | |
2135 | ||
99e3d726 RS |
2136 | #ifdef SET_CHILD_PTY_PGRP |
2137 | ioctl (xforkin, TIOCSPGRP, &pgrp); | |
2138 | ioctl (xforkout, TIOCSPGRP, &pgrp); | |
2139 | #endif | |
d0d6b7c5 | 2140 | } |
99153b9e | 2141 | #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */ |
e9bf058b | 2142 | |
d0d6b7c5 | 2143 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2144 | if (pty_flag) |
2145 | { | |
2146 | SETUP_SLAVE_PTY; | |
2147 | } | |
d0d6b7c5 JB |
2148 | #endif /* SETUP_SLAVE_PTY */ |
2149 | #ifdef AIX | |
2150 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2151 | Now reenable it in the child, so it will die when we want it to. */ | |
2152 | if (pty_flag) | |
2153 | signal (SIGHUP, SIG_DFL); | |
2154 | #endif | |
2155 | #endif /* HAVE_PTYS */ | |
2156 | ||
0dc70c33 KH |
2157 | signal (SIGINT, SIG_DFL); |
2158 | signal (SIGQUIT, SIG_DFL); | |
2159 | ||
2160 | /* Stop blocking signals in the child. */ | |
2161 | #ifdef POSIX_SIGNALS | |
2162 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2163 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2164 | #ifdef SIGCHLD |
2165 | #ifdef BSD4_1 | |
2166 | sigrelse (SIGCHLD); | |
2167 | #else /* not BSD4_1 */ | |
6df54671 | 2168 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2169 | sigsetmask (SIGEMPTYMASK); |
2170 | #else /* ordinary USG */ | |
63528b78 | 2171 | #if 0 |
d0d6b7c5 | 2172 | signal (SIGCHLD, sigchld); |
63528b78 | 2173 | #endif |
d0d6b7c5 JB |
2174 | #endif /* ordinary USG */ |
2175 | #endif /* not BSD4_1 */ | |
2176 | #endif /* SIGCHLD */ | |
0dc70c33 | 2177 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2178 | |
21375f1e | 2179 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
ab01d0a8 RS |
2180 | if (pty_flag) |
2181 | child_setup_tty (xforkout); | |
21375f1e | 2182 | #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */ |
e98d950b RS |
2183 | #ifdef WINDOWSNT |
2184 | pid = child_setup (xforkin, xforkout, xforkout, | |
2185 | new_argv, 1, current_dir); | |
177c0ea7 | 2186 | #else /* not WINDOWSNT */ |
d0d6b7c5 | 2187 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2188 | new_argv, 1, current_dir); |
e98d950b | 2189 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2190 | } |
2191 | environ = save_environ; | |
2192 | } | |
2193 | ||
ececcbec RS |
2194 | UNBLOCK_INPUT; |
2195 | ||
4a127b3b | 2196 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2197 | if (pid < 0) |
6311cf58 RS |
2198 | { |
2199 | if (forkin >= 0) | |
68c45bf0 | 2200 | emacs_close (forkin); |
6311cf58 | 2201 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2202 | emacs_close (forkout); |
6311cf58 | 2203 | } |
4a127b3b KH |
2204 | else |
2205 | { | |
2206 | /* vfork succeeded. */ | |
6bfd98e7 | 2207 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 2208 | |
e98d950b | 2209 | #ifdef WINDOWSNT |
4a127b3b | 2210 | register_child (pid, inchannel); |
e98d950b RS |
2211 | #endif /* WINDOWSNT */ |
2212 | ||
4a127b3b KH |
2213 | /* If the subfork execv fails, and it exits, |
2214 | this close hangs. I don't know why. | |
2215 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2216 | { |
2217 | struct atimer *timer; | |
2218 | EMACS_TIME offset; | |
177c0ea7 | 2219 | |
30904ab7 GM |
2220 | stop_polling (); |
2221 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2222 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2223 | |
30904ab7 GM |
2224 | if (forkin >= 0) |
2225 | emacs_close (forkin); | |
2226 | ||
2227 | cancel_atimer (timer); | |
2228 | start_polling (); | |
2229 | } | |
177c0ea7 | 2230 | |
4a127b3b | 2231 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2232 | emacs_close (forkout); |
d0d6b7c5 | 2233 | |
875e6b94 | 2234 | #ifdef HAVE_PTYS |
4a127b3b KH |
2235 | if (pty_flag) |
2236 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2237 | else | |
875e6b94 | 2238 | #endif |
4a127b3b KH |
2239 | XPROCESS (process)->tty_name = Qnil; |
2240 | } | |
3b9a3dfa | 2241 | |
4a127b3b KH |
2242 | /* Restore the signal state whether vfork succeeded or not. |
2243 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2244 | #ifdef POSIX_SIGNALS |
351e611f | 2245 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2246 | /* Restore the parent's signal handlers. */ |
2247 | sigaction (SIGINT, &sigint_action, 0); | |
2248 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2249 | #ifdef AIX | |
2250 | sigaction (SIGHUP, &sighup_action, 0); | |
2251 | #endif | |
351e611f | 2252 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2253 | /* Stop blocking signals in the parent. */ |
2254 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2255 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2256 | #ifdef SIGCHLD |
2257 | #ifdef BSD4_1 | |
2258 | sigrelse (SIGCHLD); | |
2259 | #else /* not BSD4_1 */ | |
6df54671 | 2260 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2261 | sigsetmask (SIGEMPTYMASK); |
2262 | #else /* ordinary USG */ | |
2263 | #if 0 | |
2264 | signal (SIGCHLD, sigchld); | |
2265 | /* Now really handle any of these signals | |
2266 | that came in during this function. */ | |
2267 | if (sigchld_deferred) | |
2268 | kill (getpid (), SIGCHLD); | |
2269 | #endif | |
2270 | #endif /* ordinary USG */ | |
2271 | #endif /* not BSD4_1 */ | |
2272 | #endif /* SIGCHLD */ | |
0dc70c33 | 2273 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2274 | |
2275 | /* Now generate the error if vfork failed. */ | |
2276 | if (pid < 0) | |
2277 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 JB |
2278 | } |
2279 | #endif /* not VMS */ | |
2280 | ||
e690ca94 | 2281 | \f |
d0d6b7c5 JB |
2282 | #ifdef HAVE_SOCKETS |
2283 | ||
e690ca94 KS |
2284 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2285 | The address family of sa is not included in the result. */ | |
2286 | ||
2287 | static Lisp_Object | |
2288 | conv_sockaddr_to_lisp (sa, len) | |
2289 | struct sockaddr *sa; | |
2290 | int len; | |
2291 | { | |
2292 | Lisp_Object address; | |
2293 | int i; | |
2294 | unsigned char *cp; | |
2295 | register struct Lisp_Vector *p; | |
2296 | ||
2297 | switch (sa->sa_family) | |
2298 | { | |
2299 | case AF_INET: | |
2300 | { | |
2301 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2302 | len = sizeof (sin->sin_addr) + 1; | |
2303 | address = Fmake_vector (make_number (len), Qnil); | |
2304 | p = XVECTOR (address); | |
2305 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
2306 | cp = (unsigned char *)&sin->sin_addr; | |
2307 | break; | |
2308 | } | |
e1652a86 KS |
2309 | #ifdef AF_INET6 |
2310 | case AF_INET6: | |
2311 | { | |
2312 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2313 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2314 | len = sizeof (sin6->sin6_addr)/2 + 1; | |
2315 | address = Fmake_vector (make_number (len), Qnil); | |
2316 | p = XVECTOR (address); | |
2317 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2318 | for (i = 0; i < len; i++) | |
2319 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2320 | return address; | |
2321 | } | |
2322 | #endif | |
e690ca94 KS |
2323 | #ifdef HAVE_LOCAL_SOCKETS |
2324 | case AF_LOCAL: | |
2325 | { | |
fb23673a EZ |
2326 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2327 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2328 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2329 | break; |
fb23673a | 2330 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2331 | } |
2332 | #endif | |
2333 | default: | |
2334 | len -= sizeof (sa->sa_family); | |
2335 | address = Fcons (make_number (sa->sa_family), | |
2336 | Fmake_vector (make_number (len), Qnil)); | |
2337 | p = XVECTOR (XCDR (address)); | |
2338 | cp = (unsigned char *) sa + sizeof (sa->sa_family); | |
2339 | break; | |
2340 | } | |
2341 | ||
2342 | i = 0; | |
2343 | while (i < len) | |
2344 | p->contents[i++] = make_number (*cp++); | |
2345 | ||
2346 | return address; | |
2347 | } | |
2348 | ||
2349 | ||
2350 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2351 | ||
2352 | static int | |
2353 | get_lisp_to_sockaddr_size (address, familyp) | |
2354 | Lisp_Object address; | |
2355 | int *familyp; | |
2356 | { | |
2357 | register struct Lisp_Vector *p; | |
2358 | ||
2359 | if (VECTORP (address)) | |
2360 | { | |
2361 | p = XVECTOR (address); | |
2362 | if (p->size == 5) | |
2363 | { | |
2364 | *familyp = AF_INET; | |
2365 | return sizeof (struct sockaddr_in); | |
2366 | } | |
e1652a86 KS |
2367 | #ifdef AF_INET6 |
2368 | else if (p->size == 9) | |
2369 | { | |
2370 | *familyp = AF_INET6; | |
2371 | return sizeof (struct sockaddr_in6); | |
2372 | } | |
2373 | #endif | |
e690ca94 KS |
2374 | } |
2375 | #ifdef HAVE_LOCAL_SOCKETS | |
2376 | else if (STRINGP (address)) | |
2377 | { | |
2378 | *familyp = AF_LOCAL; | |
2379 | return sizeof (struct sockaddr_un); | |
2380 | } | |
2381 | #endif | |
2382 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2383 | { | |
2384 | struct sockaddr *sa; | |
2385 | *familyp = XINT (XCAR (address)); | |
2386 | p = XVECTOR (XCDR (address)); | |
2387 | return p->size + sizeof (sa->sa_family); | |
2388 | } | |
2389 | return 0; | |
2390 | } | |
2391 | ||
2392 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2393 | |
2394 | The address format has been basically validated by | |
2395 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2396 | it could have come from user data. So if FAMILY is not valid, | |
2397 | we return after zeroing *SA. */ | |
e690ca94 KS |
2398 | |
2399 | static void | |
2400 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2401 | int family; | |
2402 | Lisp_Object address; | |
2403 | struct sockaddr *sa; | |
2404 | int len; | |
2405 | { | |
2406 | register struct Lisp_Vector *p; | |
34967d0f | 2407 | register unsigned char *cp = NULL; |
e690ca94 KS |
2408 | register int i; |
2409 | ||
2410 | bzero (sa, len); | |
e690ca94 KS |
2411 | |
2412 | if (VECTORP (address)) | |
2413 | { | |
2414 | p = XVECTOR (address); | |
2415 | if (family == AF_INET) | |
2416 | { | |
2417 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2418 | len = sizeof (sin->sin_addr) + 1; | |
2419 | i = XINT (p->contents[--len]); | |
2420 | sin->sin_port = htons (i); | |
2421 | cp = (unsigned char *)&sin->sin_addr; | |
9d1a8e5d | 2422 | sa->sa_family = family; |
e690ca94 | 2423 | } |
e1652a86 KS |
2424 | #ifdef AF_INET6 |
2425 | else if (family == AF_INET6) | |
2426 | { | |
2427 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2428 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2429 | len = sizeof (sin6->sin6_addr) + 1; | |
2430 | i = XINT (p->contents[--len]); | |
2431 | sin6->sin6_port = htons (i); | |
2432 | for (i = 0; i < len; i++) | |
2433 | if (INTEGERP (p->contents[i])) | |
2434 | { | |
2435 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2436 | ip6[i] = ntohs (j); | |
2437 | } | |
9d1a8e5d | 2438 | sa->sa_family = family; |
e1652a86 KS |
2439 | } |
2440 | #endif | |
6bf890d7 | 2441 | return; |
e690ca94 KS |
2442 | } |
2443 | else if (STRINGP (address)) | |
2444 | { | |
2445 | #ifdef HAVE_LOCAL_SOCKETS | |
2446 | if (family == AF_LOCAL) | |
2447 | { | |
fb23673a | 2448 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2449 | cp = SDATA (address); |
fb23673a EZ |
2450 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2451 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2452 | sa->sa_family = family; |
e690ca94 KS |
2453 | } |
2454 | #endif | |
2455 | return; | |
2456 | } | |
2457 | else | |
2458 | { | |
2459 | p = XVECTOR (XCDR (address)); | |
2460 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2461 | } | |
2462 | ||
2463 | for (i = 0; i < len; i++) | |
2464 | if (INTEGERP (p->contents[i])) | |
2465 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2466 | } | |
2467 | ||
2468 | #ifdef DATAGRAM_SOCKETS | |
2469 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2470 | 1, 1, 0, | |
2471 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2472 | (process) | |
2473 | Lisp_Object process; | |
2474 | { | |
2475 | int channel; | |
2476 | ||
2477 | CHECK_PROCESS (process); | |
2478 | ||
2479 | if (!DATAGRAM_CONN_P (process)) | |
2480 | return Qnil; | |
2481 | ||
60f0fb11 | 2482 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2483 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2484 | datagram_address[channel].len); | |
2485 | } | |
2486 | ||
2487 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2488 | 2, 2, 0, | |
2489 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2490 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2491 | (process, address) | |
2492 | Lisp_Object process, address; | |
2493 | { | |
2494 | int channel; | |
2495 | int family, len; | |
2496 | ||
2497 | CHECK_PROCESS (process); | |
2498 | ||
2499 | if (!DATAGRAM_CONN_P (process)) | |
2500 | return Qnil; | |
2501 | ||
60f0fb11 | 2502 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2503 | |
2504 | len = get_lisp_to_sockaddr_size (address, &family); | |
2505 | if (datagram_address[channel].len != len) | |
2506 | return Qnil; | |
2507 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2508 | return address; | |
2509 | } | |
2510 | #endif | |
2511 | \f | |
2512 | ||
2513 | static struct socket_options { | |
2514 | /* The name of this option. Should be lowercase version of option | |
177c0ea7 | 2515 | name without SO_ prefix. */ |
e690ca94 | 2516 | char *name; |
e690ca94 KS |
2517 | /* Option level SOL_... */ |
2518 | int optlevel; | |
2519 | /* Option number SO_... */ | |
2520 | int optnum; | |
151ec9e2 | 2521 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2ccf3102 | 2522 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; |
e690ca94 KS |
2523 | } socket_options[] = |
2524 | { | |
2525 | #ifdef SO_BINDTODEVICE | |
151ec9e2 | 2526 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2527 | #endif |
2528 | #ifdef SO_BROADCAST | |
2ccf3102 | 2529 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2530 | #endif |
2531 | #ifdef SO_DONTROUTE | |
2ccf3102 | 2532 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2533 | #endif |
2534 | #ifdef SO_KEEPALIVE | |
2ccf3102 | 2535 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2536 | #endif |
2537 | #ifdef SO_LINGER | |
2ccf3102 | 2538 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2539 | #endif |
2540 | #ifdef SO_OOBINLINE | |
2ccf3102 | 2541 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2542 | #endif |
2543 | #ifdef SO_PRIORITY | |
2ccf3102 | 2544 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2545 | #endif |
2546 | #ifdef SO_REUSEADDR | |
2ccf3102 | 2547 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2548 | #endif |
2ccf3102 | 2549 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2550 | }; |
2551 | ||
2ccf3102 | 2552 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2553 | |
2ccf3102 KS |
2554 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2555 | Signals an error if setting a known option fails. | |
2556 | */ | |
e690ca94 KS |
2557 | |
2558 | static int | |
2ccf3102 | 2559 | set_socket_option (s, opt, val) |
e690ca94 | 2560 | int s; |
2ccf3102 | 2561 | Lisp_Object opt, val; |
e690ca94 | 2562 | { |
2ccf3102 KS |
2563 | char *name; |
2564 | struct socket_options *sopt; | |
2565 | int ret = 0; | |
e690ca94 | 2566 | |
2ccf3102 | 2567 | CHECK_SYMBOL (opt); |
e690ca94 | 2568 | |
2ccf3102 KS |
2569 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2570 | for (sopt = socket_options; sopt->name; sopt++) | |
2571 | if (strcmp (name, sopt->name) == 0) | |
2572 | break; | |
e690ca94 | 2573 | |
2ccf3102 KS |
2574 | switch (sopt->opttype) |
2575 | { | |
2576 | case SOPT_BOOL: | |
2577 | { | |
2578 | int optval; | |
2579 | optval = NILP (val) ? 0 : 1; | |
2580 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2581 | &optval, sizeof (optval)); | |
2582 | break; | |
2583 | } | |
e690ca94 | 2584 | |
2ccf3102 KS |
2585 | case SOPT_INT: |
2586 | { | |
2587 | int optval; | |
2588 | if (INTEGERP (val)) | |
2589 | optval = XINT (val); | |
2590 | else | |
2591 | error ("Bad option value for %s", name); | |
2592 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2593 | &optval, sizeof (optval)); | |
2594 | break; | |
2595 | } | |
e690ca94 | 2596 | |
151ec9e2 KS |
2597 | #ifdef SO_BINDTODEVICE |
2598 | case SOPT_IFNAME: | |
2ccf3102 | 2599 | { |
151ec9e2 KS |
2600 | char devname[IFNAMSIZ+1]; |
2601 | ||
2602 | /* This is broken, at least in the Linux 2.4 kernel. | |
2603 | To unbind, the arg must be a zero integer, not the empty string. | |
2604 | This should work on all systems. KFS. 2003-09-23. */ | |
2605 | bzero (devname, sizeof devname); | |
2606 | if (STRINGP (val)) | |
2607 | { | |
2608 | char *arg = (char *) SDATA (val); | |
2609 | int len = min (strlen (arg), IFNAMSIZ); | |
2610 | bcopy (arg, devname, len); | |
2611 | } | |
2612 | else if (!NILP (val)) | |
2ccf3102 KS |
2613 | error ("Bad option value for %s", name); |
2614 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
151ec9e2 KS |
2615 | devname, IFNAMSIZ); |
2616 | break; | |
2ccf3102 | 2617 | } |
151ec9e2 | 2618 | #endif |
e690ca94 | 2619 | |
177c0ea7 | 2620 | #ifdef SO_LINGER |
2ccf3102 KS |
2621 | case SOPT_LINGER: |
2622 | { | |
2623 | struct linger linger; | |
e690ca94 | 2624 | |
2ccf3102 KS |
2625 | linger.l_onoff = 1; |
2626 | linger.l_linger = 0; | |
2627 | if (INTEGERP (val)) | |
2628 | linger.l_linger = XINT (val); | |
2629 | else | |
2630 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2631 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2632 | &linger, sizeof (linger)); | |
2633 | break; | |
2634 | } | |
e690ca94 | 2635 | #endif |
2ccf3102 KS |
2636 | |
2637 | default: | |
2638 | return 0; | |
e690ca94 | 2639 | } |
2ccf3102 KS |
2640 | |
2641 | if (ret < 0) | |
2642 | report_file_error ("Cannot set network option", | |
2643 | Fcons (opt, Fcons (val, Qnil))); | |
2644 | return (1 << sopt->optbit); | |
e690ca94 KS |
2645 | } |
2646 | ||
2ccf3102 KS |
2647 | |
2648 | DEFUN ("set-network-process-option", | |
2649 | Fset_network_process_option, Sset_network_process_option, | |
2650 | 3, 4, 0, | |
2651 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2652 | See `make-network-process' for a list of options and values. | |
2653 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2654 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2655 | (process, option, value, no_error) | |
2656 | Lisp_Object process, option, value; | |
2657 | Lisp_Object no_error; | |
e690ca94 | 2658 | { |
e1283999 | 2659 | int s; |
151ec9e2 | 2660 | struct Lisp_Process *p; |
e690ca94 | 2661 | |
e690ca94 | 2662 | CHECK_PROCESS (process); |
151ec9e2 KS |
2663 | p = XPROCESS (process); |
2664 | if (!NETCONN1_P (p)) | |
2665 | error ("Process is not a network process"); | |
2ccf3102 | 2666 | |
60f0fb11 | 2667 | s = p->infd; |
2ccf3102 KS |
2668 | if (s < 0) |
2669 | error ("Process is not running"); | |
2670 | ||
2671 | if (set_socket_option (s, option, value)) | |
151ec9e2 KS |
2672 | { |
2673 | p->childp = Fplist_put (p->childp, option, value); | |
2674 | return Qt; | |
2675 | } | |
2ccf3102 KS |
2676 | |
2677 | if (NILP (no_error)) | |
2678 | error ("Unknown or unsupported option"); | |
2679 | ||
2680 | return Qnil; | |
e690ca94 | 2681 | } |
2ccf3102 | 2682 | |
e690ca94 | 2683 | \f |
e690ca94 KS |
2684 | /* A version of request_sigio suitable for a record_unwind_protect. */ |
2685 | ||
98228e72 | 2686 | #ifdef __ultrix__ |
ff6daed3 | 2687 | static Lisp_Object |
e690ca94 KS |
2688 | unwind_request_sigio (dummy) |
2689 | Lisp_Object dummy; | |
2690 | { | |
2691 | if (interrupt_input) | |
2692 | request_sigio (); | |
2693 | return Qnil; | |
2694 | } | |
98228e72 | 2695 | #endif |
e690ca94 KS |
2696 | |
2697 | /* Create a network stream/datagram client/server process. Treated | |
2698 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2699 | differences are in status display and process deletion. A network |
2700 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2701 | stop/continue it and deactivate/close it via delete-process */ |
2702 | ||
177c0ea7 JB |
2703 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2704 | 0, MANY, 0, | |
e690ca94 KS |
2705 | doc: /* Create and return a network server or client process. |
2706 | ||
fa9d4315 | 2707 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2708 | input and output work as for subprocesses and `delete-process' closes |
2709 | a network connection. However, a network process has no process id, | |
d22426e1 | 2710 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2711 | processes. |
2712 | ||
2713 | Arguments are specified as keyword/argument pairs. The following | |
2714 | arguments are defined: | |
2715 | ||
2716 | :name NAME -- NAME is name for process. It is modified if necessary | |
2717 | to make it unique. | |
2718 | ||
2719 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2720 | with the process. Process output goes at end of that buffer, unless | |
2721 | you specify an output stream or filter function to handle the output. | |
2722 | BUFFER may be also nil, meaning that this process is not associated | |
2723 | with any buffer. | |
2724 | ||
2725 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2726 | address. The symbol `local' specifies the local host. If specified | |
2727 | for a server process, it must be a valid name or address for the local | |
2728 | host, and only clients connecting to that address will be accepted. | |
2729 | ||
2730 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2731 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2732 | a random port number is selected for the server. (If Emacs was |
2733 | compiled with getaddrinfo, a port number can also be specified as a | |
2734 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2735 | |
9057ff80 KS |
2736 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
2737 | stream type connection, `datagram' creates a datagram type connection. | |
2738 | ||
e690ca94 | 2739 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2740 | service specified by HOST and SERVICE. The default (nil) is to use |
2741 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2742 | and port number specified by HOST and SERVICE. Other address families | |
2743 | supported are: | |
e690ca94 | 2744 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2745 | ipv4 -- use IPv4 address family only. |
2746 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2747 | |
2748 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2749 | This parameter is ignored when opening a client process. When specified | |
2750 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2751 | ||
2752 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2753 | connection. This parameter is ignored when opening a stream server | |
2754 | process. For a datagram server process, it specifies the initial | |
2755 | setting of the remote datagram address. When specified for a client | |
2756 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2757 | ||
2758 | The format of ADDRESS depends on the address family: | |
2759 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2760 | corresponding to numeric IP address A.B.C.D and port number P. | |
2761 | - A local address is represented as a string with the address in the | |
2762 | local address space. | |
2763 | - An "unsupported family" address is represented by a cons (F . AV) | |
2764 | where F is the family number and AV is a vector containing the socket | |
2765 | address data with one element per address data byte. Do not rely on | |
2766 | this format in portable code, as it may depend on implementation | |
2767 | defined constants, data sizes, and data structure alignment. | |
2768 | ||
2ccf3102 KS |
2769 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2770 | system used for both reading and writing for this process. If CODING | |
2771 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2772 | ENCODING is used for writing. | |
e690ca94 KS |
2773 | |
2774 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2775 | return without waiting for the connection to complete; instead, the | |
2776 | sentinel function will be called with second arg matching "open" (if | |
2777 | successful) or "failed" when the connect completes. Default is to use | |
2778 | a blocking connect (i.e. wait) for stream type connections. | |
2779 | ||
2780 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2781 | running when Emacs is exited. |
e690ca94 KS |
2782 | |
2783 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2784 | In the stopped state, a server process does not accept new | |
2785 | connections, and a client process does not handle incoming traffic. | |
2786 | The stopped state is cleared by `continue-process' and set by | |
2787 | `stop-process'. | |
2788 | ||
2789 | :filter FILTER -- Install FILTER as the process filter. | |
2790 | ||
7392e23c KS |
2791 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2792 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2793 | If this keyword is not specified, the strings are multibyte if |
03f04413 KH |
2794 | `default-enable-multibyte-characters' is non-nil. |
2795 | ||
e690ca94 KS |
2796 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2797 | ||
2798 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2799 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2800 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2801 | is the server process, CLIENT is the new process for the connection, | |
2802 | and MESSAGE is a string. | |
2803 | ||
faa7db08 | 2804 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2805 | |
2ccf3102 | 2806 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2807 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
2ccf3102 KS |
2808 | If QLEN is an integer, it is used as the max. length of the server's |
2809 | pending connection queue (also known as the backlog); the default | |
2810 | queue length is 5. Default is to create a client process. | |
2811 | ||
2812 | The following network options can be specified for this connection: | |
2813 | ||
2ccf3102 KS |
2814 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. |
2815 | :dontroute BOOL -- Only send to directly connected hosts. | |
2816 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2817 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2818 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2819 | :priority INT -- Set protocol defined priority for sent packets. | |
2820 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2821 | (this is allowed by default for a server process). | |
151ec9e2 KS |
2822 | :bindtodevice NAME -- bind to interface NAME. Using this may require |
2823 | special privileges on some systems. | |
2ccf3102 KS |
2824 | |
2825 | Consult the relevant system programmer's manual pages for more | |
2826 | information on using these options. | |
2827 | ||
2828 | ||
2829 | A server process will listen for and accept connections from clients. | |
2830 | When a client connection is accepted, a new network process is created | |
2831 | for the connection with the following parameters: | |
e690ca94 | 2832 | |
e690ca94 KS |
2833 | - The client's process name is constructed by concatenating the server |
2834 | process' NAME and a client identification string. | |
2835 | - If the FILTER argument is non-nil, the client process will not get a | |
2836 | separate process buffer; otherwise, the client's process buffer is a newly | |
2837 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2838 | NAME concatenated with the client identification string. |
e690ca94 KS |
2839 | - The connection type and the process filter and sentinel parameters are |
2840 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2841 | - The client process' contact info is set according to the client's | |
2842 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2843 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2844 | |
2845 | Notice that the FILTER and SENTINEL args are never used directly by | |
2846 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2847 | the server process, but via the optional :log function, accepted (and |
2848 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2849 | |
365aee82 KS |
2850 | The original argument list, modified with the actual connection |
2851 | information, is available via the `process-contact' function. | |
365aee82 | 2852 | |
fa9d4315 | 2853 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
2854 | (nargs, args) |
2855 | int nargs; | |
2856 | Lisp_Object *args; | |
d0d6b7c5 JB |
2857 | { |
2858 | Lisp_Object proc; | |
e690ca94 KS |
2859 | Lisp_Object contact; |
2860 | struct Lisp_Process *p; | |
70dbdb36 | 2861 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2862 | struct addrinfo ai, *res, *lres; |
e1652a86 KS |
2863 | struct addrinfo hints; |
2864 | char *portstring, portbuf[128]; | |
70dbdb36 | 2865 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2866 | struct _emacs_addrinfo |
2867 | { | |
2868 | int ai_family; | |
2869 | int ai_socktype; | |
2870 | int ai_protocol; | |
2871 | int ai_addrlen; | |
2872 | struct sockaddr *ai_addr; | |
2873 | struct _emacs_addrinfo *ai_next; | |
2874 | } ai, *res, *lres; | |
418b48fd | 2875 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2876 | struct sockaddr_in address_in; |
2877 | #ifdef HAVE_LOCAL_SOCKETS | |
2878 | struct sockaddr_un address_un; | |
2879 | #endif | |
2880 | int port; | |
dd2a17ab KS |
2881 | int ret = 0; |
2882 | int xerrno = 0; | |
418b48fd | 2883 | int s = -1, outch, inch; |
e690ca94 | 2884 | struct gcpro gcpro1; |
aed13378 | 2885 | int count = SPECPDL_INDEX (); |
5684cd6e | 2886 | int count1; |
e690ca94 KS |
2887 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2888 | Lisp_Object tem; | |
2889 | Lisp_Object name, buffer, host, service, address; | |
2890 | Lisp_Object filter, sentinel; | |
2891 | int is_non_blocking_client = 0; | |
2ccf3102 | 2892 | int is_server = 0, backlog = 5; |
9057ff80 | 2893 | int socktype; |
e690ca94 KS |
2894 | int family = -1; |
2895 | ||
2896 | if (nargs == 0) | |
2897 | return Qnil; | |
dd2a17ab | 2898 | |
e690ca94 KS |
2899 | /* Save arguments for process-contact and clone-process. */ |
2900 | contact = Flist (nargs, args); | |
2901 | GCPRO1 (contact); | |
2902 | ||
bff3ed0a RS |
2903 | #ifdef WINDOWSNT |
2904 | /* Ensure socket support is loaded if available. */ | |
2905 | init_winsock (TRUE); | |
2906 | #endif | |
2907 | ||
9057ff80 KS |
2908 | /* :type TYPE (nil: stream, datagram */ |
2909 | tem = Fplist_get (contact, QCtype); | |
2910 | if (NILP (tem)) | |
2911 | socktype = SOCK_STREAM; | |
2912 | #ifdef DATAGRAM_SOCKETS | |
2913 | else if (EQ (tem, Qdatagram)) | |
2914 | socktype = SOCK_DGRAM; | |
e690ca94 | 2915 | #endif |
9057ff80 KS |
2916 | else |
2917 | error ("Unsupported connection type"); | |
e690ca94 KS |
2918 | |
2919 | /* :server BOOL */ | |
2920 | tem = Fplist_get (contact, QCserver); | |
2921 | if (!NILP (tem)) | |
2922 | { | |
75728599 JR |
2923 | /* Don't support network sockets when non-blocking mode is |
2924 | not available, since a blocked Emacs is not useful. */ | |
2925 | #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY)) | |
e690ca94 KS |
2926 | error ("Network servers not supported"); |
2927 | #else | |
2928 | is_server = 1; | |
2ccf3102 KS |
2929 | if (INTEGERP (tem)) |
2930 | backlog = XINT (tem); | |
e690ca94 KS |
2931 | #endif |
2932 | } | |
2933 | ||
2934 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2935 | QCaddress = is_server ? QClocal : QCremote; | |
2936 | ||
d7e344cd | 2937 | /* :nowait BOOL */ |
e690ca94 KS |
2938 | if (!is_server && socktype == SOCK_STREAM |
2939 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) | |
2940 | { | |
2941 | #ifndef NON_BLOCKING_CONNECT | |
2942 | error ("Non-blocking connect not supported"); | |
2943 | #else | |
2944 | is_non_blocking_client = 1; | |
2945 | #endif | |
2946 | } | |
2947 | ||
2948 | name = Fplist_get (contact, QCname); | |
2949 | buffer = Fplist_get (contact, QCbuffer); | |
2950 | filter = Fplist_get (contact, QCfilter); | |
2951 | sentinel = Fplist_get (contact, QCsentinel); | |
2952 | ||
b7826503 | 2953 | CHECK_STRING (name); |
e690ca94 KS |
2954 | |
2955 | #ifdef TERM | |
2956 | /* Let's handle TERM before things get complicated ... */ | |
2957 | host = Fplist_get (contact, QChost); | |
b7826503 | 2958 | CHECK_STRING (host); |
177c0ea7 | 2959 | |
e690ca94 KS |
2960 | service = Fplist_get (contact, QCservice); |
2961 | if (INTEGERP (service)) | |
2962 | port = htons ((unsigned short) XINT (service)); | |
2963 | else | |
2964 | { | |
2965 | struct servent *svc_info; | |
2966 | CHECK_STRING (service); | |
d5db4077 | 2967 | svc_info = getservbyname (SDATA (service), "tcp"); |
e690ca94 | 2968 | if (svc_info == 0) |
d5db4077 | 2969 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2970 | port = svc_info->s_port; |
2971 | } | |
2972 | ||
2973 | s = connect_server (0); | |
2974 | if (s < 0) | |
2975 | report_file_error ("error creating socket", Fcons (name, Qnil)); | |
d5db4077 | 2976 | send_command (s, C_PORT, 0, "%s:%d", SDATA (host), ntohs (port)); |
e690ca94 KS |
2977 | send_command (s, C_DUMB, 1, 0); |
2978 | ||
2979 | #else /* not TERM */ | |
2980 | ||
2981 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ | |
2982 | ai.ai_socktype = socktype; | |
2983 | ai.ai_protocol = 0; | |
2984 | ai.ai_next = NULL; | |
2985 | res = &ai; | |
a319f7c1 | 2986 | |
e690ca94 KS |
2987 | /* :local ADDRESS or :remote ADDRESS */ |
2988 | address = Fplist_get (contact, QCaddress); | |
2989 | if (!NILP (address)) | |
a319f7c1 | 2990 | { |
e690ca94 KS |
2991 | host = service = Qnil; |
2992 | ||
2993 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2994 | error ("Malformed :address"); | |
2995 | ai.ai_family = family; | |
2996 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2997 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2998 | goto open_socket; | |
a319f7c1 | 2999 | } |
e690ca94 KS |
3000 | |
3001 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
3002 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 3003 | if (NILP (tem)) |
a319f7c1 | 3004 | { |
87b6ca8d | 3005 | #if defined(HAVE_GETADDRINFO) && defined(AF_INET6) |
e1652a86 KS |
3006 | family = AF_UNSPEC; |
3007 | #else | |
3008 | family = AF_INET; | |
e690ca94 | 3009 | #endif |
a319f7c1 | 3010 | } |
e1652a86 KS |
3011 | #ifdef HAVE_LOCAL_SOCKETS |
3012 | else if (EQ (tem, Qlocal)) | |
3013 | family = AF_LOCAL; | |
3014 | #endif | |
3015 | #ifdef AF_INET6 | |
3016 | else if (EQ (tem, Qipv6)) | |
3017 | family = AF_INET6; | |
3018 | #endif | |
3019 | else if (EQ (tem, Qipv4)) | |
3020 | family = AF_INET; | |
3021 | else if (INTEGERP (tem)) | |
3022 | family = XINT (tem); | |
3023 | else | |
e690ca94 | 3024 | error ("Unknown address family"); |
e1652a86 | 3025 | |
e690ca94 KS |
3026 | ai.ai_family = family; |
3027 | ||
3028 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3029 | service = Fplist_get (contact, QCservice); | |
3030 | ||
3031 | #ifdef HAVE_LOCAL_SOCKETS | |
3032 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3033 | { |
e690ca94 KS |
3034 | /* Host is not used. */ |
3035 | host = Qnil; | |
b7826503 | 3036 | CHECK_STRING (service); |
e690ca94 KS |
3037 | bzero (&address_un, sizeof address_un); |
3038 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 3039 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
3040 | ai.ai_addr = (struct sockaddr *) &address_un; |
3041 | ai.ai_addrlen = sizeof address_un; | |
3042 | goto open_socket; | |
d0d6b7c5 | 3043 | } |
e690ca94 | 3044 | #endif |
a319f7c1 | 3045 | |
e690ca94 KS |
3046 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3047 | host = Fplist_get (contact, QChost); | |
3048 | if (!NILP (host)) | |
3049 | { | |
3050 | if (EQ (host, Qlocal)) | |
3051 | host = build_string ("localhost"); | |
3052 | CHECK_STRING (host); | |
3053 | } | |
d0d6b7c5 | 3054 | |
798b64bb KH |
3055 | /* Slow down polling to every ten seconds. |
3056 | Some kernels have a bug which causes retrying connect to fail | |
3057 | after a connect. Polling can interfere with gethostbyname too. */ | |
3058 | #ifdef POLL_FOR_INPUT | |
e690ca94 KS |
3059 | if (socktype == SOCK_STREAM) |
3060 | { | |
3061 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3062 | bind_polling_period (10); | |
3063 | } | |
798b64bb KH |
3064 | #endif |
3065 | ||
a319f7c1 | 3066 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3067 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3068 | Otherwise, use getservbyname to lookup the service. */ | |
3069 | if (!NILP (host)) | |
3070 | { | |
3071 | ||
3072 | /* SERVICE can either be a string or int. | |
3073 | Convert to a C string for later use by getaddrinfo. */ | |
3074 | if (EQ (service, Qt)) | |
3075 | portstring = "0"; | |
3076 | else if (INTEGERP (service)) | |
3077 | { | |
3078 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
3079 | portstring = portbuf; | |
3080 | } | |
3081 | else | |
3082 | { | |
3083 | CHECK_STRING (service); | |
d5db4077 | 3084 | portstring = SDATA (service); |
e690ca94 KS |
3085 | } |
3086 | ||
3087 | immediate_quit = 1; | |
3088 | QUIT; | |
3089 | memset (&hints, 0, sizeof (hints)); | |
3090 | hints.ai_flags = 0; | |
e1652a86 | 3091 | hints.ai_family = family; |
e690ca94 KS |
3092 | hints.ai_socktype = socktype; |
3093 | hints.ai_protocol = 0; | |
08116b48 CY |
3094 | |
3095 | #ifdef HAVE_RES_INIT | |
3096 | res_init (); | |
3097 | #endif | |
3098 | ||
d5db4077 | 3099 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 3100 | if (ret) |
f6270f62 | 3101 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 3102 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 3103 | #else |
d5db4077 | 3104 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 3105 | #endif |
e690ca94 | 3106 | immediate_quit = 0; |
a319f7c1 | 3107 | |
e690ca94 KS |
3108 | goto open_socket; |
3109 | } | |
3110 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3111 | |
e690ca94 KS |
3112 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3113 | has been specified (e.g. for a local server process). */ | |
3114 | ||
3115 | if (EQ (service, Qt)) | |
3116 | port = 0; | |
3117 | else if (INTEGERP (service)) | |
3118 | port = htons ((unsigned short) XINT (service)); | |
3119 | else | |
616da37c | 3120 | { |
e690ca94 KS |
3121 | struct servent *svc_info; |
3122 | CHECK_STRING (service); | |
177c0ea7 | 3123 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
3124 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3125 | if (svc_info == 0) | |
d5db4077 | 3126 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3127 | port = svc_info->s_port; |
3128 | } | |
3129 | ||
3130 | bzero (&address_in, sizeof address_in); | |
3131 | address_in.sin_family = family; | |
3132 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3133 | address_in.sin_port = port; | |
3134 | ||
3135 | #ifndef HAVE_GETADDRINFO | |
3136 | if (!NILP (host)) | |
3137 | { | |
3138 | struct hostent *host_info_ptr; | |
3139 | ||
3140 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 3141 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3142 | immediate_quit = 1; |
3143 | QUIT; | |
08116b48 CY |
3144 | |
3145 | #ifdef HAVE_RES_INIT | |
3146 | res_init (); | |
3147 | #endif | |
3148 | ||
d5db4077 | 3149 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3150 | immediate_quit = 0; |
177c0ea7 | 3151 | |
e690ca94 KS |
3152 | if (host_info_ptr) |
3153 | { | |
3154 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
3155 | host_info_ptr->h_length); | |
3156 | family = host_info_ptr->h_addrtype; | |
3157 | address_in.sin_family = family; | |
3158 | } | |
3159 | else | |
3160 | /* Attempt to interpret host as numeric inet address */ | |
3161 | { | |
3162 | IN_ADDR numeric_addr; | |
d5db4077 | 3163 | numeric_addr = inet_addr ((char *) SDATA (host)); |
e690ca94 | 3164 | if (NUMERIC_ADDR_ERROR) |
d5db4077 | 3165 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3166 | |
e690ca94 KS |
3167 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
3168 | sizeof (address_in.sin_addr)); | |
3169 | } | |
d0d6b7c5 | 3170 | |
e690ca94 | 3171 | } |
dd2a17ab | 3172 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3173 | |
e690ca94 KS |
3174 | ai.ai_family = family; |
3175 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3176 | ai.ai_addrlen = sizeof address_in; | |
3177 | ||
3178 | open_socket: | |
3179 | ||
6bbba5a6 KL |
3180 | #ifdef __ultrix__ |
3181 | /* Previously this was compiled unconditionally, but that seems | |
3182 | unnecessary on modern systems, and `unrequest_sigio' was a noop | |
3183 | under X anyway. --lorentey */ | |
e690ca94 KS |
3184 | /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR) |
3185 | when connect is interrupted. So let's not let it get interrupted. | |
3186 | Note we do not turn off polling, because polling is only used | |
3187 | when not interrupt_input, and thus not normally used on the systems | |
3188 | which have this bug. On systems which use polling, there's no way | |
3189 | to quit if polling is turned off. */ | |
3190 | if (interrupt_input | |
3191 | && !is_server && socktype == SOCK_STREAM) | |
3192 | { | |
3193 | /* Comment from KFS: The original open-network-stream code | |
3194 | didn't unwind protect this, but it seems like the proper | |
3195 | thing to do. In any case, I don't see how it could harm to | |
3196 | do this -- and it makes cleanup (using unbind_to) easier. */ | |
3197 | record_unwind_protect (unwind_request_sigio, Qnil); | |
3198 | unrequest_sigio (); | |
3199 | } | |
6bbba5a6 | 3200 | #endif |
e690ca94 | 3201 | |
dd2a17ab | 3202 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3203 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3204 | s = -1; |
457a9bee | 3205 | |
dd2a17ab KS |
3206 | for (lres = res; lres; lres = lres->ai_next) |
3207 | { | |
2ccf3102 KS |
3208 | int optn, optbits; |
3209 | ||
4e9dd03b KS |
3210 | retry_connect: |
3211 | ||
dd2a17ab KS |
3212 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3213 | if (s < 0) | |
3214 | { | |
3215 | xerrno = errno; | |
3216 | continue; | |
3217 | } | |
0f2ee0c1 | 3218 | |
e690ca94 KS |
3219 | #ifdef DATAGRAM_SOCKETS |
3220 | if (!is_server && socktype == SOCK_DGRAM) | |
3221 | break; | |
3222 | #endif /* DATAGRAM_SOCKETS */ | |
3223 | ||
dd2a17ab | 3224 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3225 | if (is_non_blocking_client) |
dd2a17ab KS |
3226 | { |
3227 | #ifdef O_NONBLOCK | |
3228 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3229 | #else | |
3230 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3231 | #endif | |
3232 | if (ret < 0) | |
3233 | { | |
3234 | xerrno = errno; | |
3235 | emacs_close (s); | |
3236 | s = -1; | |
3237 | continue; | |
3238 | } | |
3239 | } | |
3240 | #endif | |
177c0ea7 | 3241 | |
dd2a17ab | 3242 | /* Make us close S if quit. */ |
dd2a17ab KS |
3243 | record_unwind_protect (close_file_unwind, make_number (s)); |
3244 | ||
2ccf3102 KS |
3245 | /* Parse network options in the arg list. |
3246 | We simply ignore anything which isn't a known option (including other keywords). | |
3247 | An error is signalled if setting a known option fails. */ | |
3248 | for (optn = optbits = 0; optn < nargs-1; optn += 2) | |
3249 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3250 | ||
e690ca94 KS |
3251 | if (is_server) |
3252 | { | |
3253 | /* Configure as a server socket. */ | |
2ccf3102 KS |
3254 | |
3255 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3256 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3257 | #ifdef HAVE_LOCAL_SOCKETS |
3258 | if (family != AF_LOCAL) | |
3259 | #endif | |
2ccf3102 KS |
3260 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3261 | { | |
3262 | int optval = 1; | |
3263 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
7c402969 | 3264 | report_file_error ("Cannot set reuse option on server socket", Qnil); |
2ccf3102 | 3265 | } |
177c0ea7 | 3266 | |
e690ca94 KS |
3267 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3268 | report_file_error ("Cannot bind server socket", Qnil); | |
3269 | ||
3270 | #ifdef HAVE_GETSOCKNAME | |
3271 | if (EQ (service, Qt)) | |
3272 | { | |
3273 | struct sockaddr_in sa1; | |
3274 | int len1 = sizeof (sa1); | |
3275 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3276 | { | |
3277 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3278 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3279 | contact = Fplist_put (contact, QCservice, service); |
3280 | } | |
3281 | } | |
3282 | #endif | |
3283 | ||
2ccf3102 | 3284 | if (socktype == SOCK_STREAM && listen (s, backlog)) |
e690ca94 KS |
3285 | report_file_error ("Cannot listen on server socket", Qnil); |
3286 | ||
3287 | break; | |
3288 | } | |
3289 | ||
dd2a17ab KS |
3290 | immediate_quit = 1; |
3291 | QUIT; | |
3292 | ||
3293 | /* This turns off all alarm-based interrupts; the | |
3294 | bind_polling_period call above doesn't always turn all the | |
3295 | short-interval ones off, especially if interrupt_input is | |
3296 | set. | |
3297 | ||
3298 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3299 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3300 | |
3301 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3302 | ||
f40f9848 | 3303 | turn_on_atimers (0); |
dd2a17ab KS |
3304 | |
3305 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3306 | xerrno = errno; | |
3307 | ||
f40f9848 | 3308 | turn_on_atimers (1); |
dd2a17ab KS |
3309 | |
3310 | if (ret == 0 || xerrno == EISCONN) | |
3311 | { | |
dd2a17ab KS |
3312 | /* The unwind-protect will be discarded afterwards. |
3313 | Likewise for immediate_quit. */ | |
3314 | break; | |
3315 | } | |
3316 | ||
3317 | #ifdef NON_BLOCKING_CONNECT | |
3318 | #ifdef EINPROGRESS | |
e690ca94 | 3319 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3320 | break; |
3321 | #else | |
3322 | #ifdef EWOULDBLOCK | |
e690ca94 | 3323 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3324 | break; |
3325 | #endif | |
3326 | #endif | |
3327 | #endif | |
e333e864 | 3328 | |
0f2ee0c1 RS |
3329 | immediate_quit = 0; |
3330 | ||
dd2a17ab | 3331 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3332 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3333 | emacs_close (s); |
dd2a17ab | 3334 | s = -1; |
4e9dd03b KS |
3335 | |
3336 | if (xerrno == EINTR) | |
3337 | goto retry_connect; | |
dd2a17ab | 3338 | } |
457a9bee | 3339 | |
e690ca94 KS |
3340 | if (s >= 0) |
3341 | { | |
3342 | #ifdef DATAGRAM_SOCKETS | |
3343 | if (socktype == SOCK_DGRAM) | |
3344 | { | |
3345 | if (datagram_address[s].sa) | |
3346 | abort (); | |
3347 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3348 | datagram_address[s].len = lres->ai_addrlen; | |
3349 | if (is_server) | |
3350 | { | |
3351 | Lisp_Object remote; | |
3352 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3353 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3354 | { | |
3355 | int rfamily, rlen; | |
3356 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3357 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3358 | conv_lisp_to_sockaddr (rfamily, remote, | |
3359 | datagram_address[s].sa, rlen); | |
3360 | } | |
3361 | } | |
3362 | else | |
3363 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3364 | } | |
3365 | #endif | |
177c0ea7 | 3366 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3367 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3368 | #ifdef HAVE_GETSOCKNAME |
3369 | if (!is_server) | |
3370 | { | |
3371 | struct sockaddr_in sa1; | |
3372 | int len1 = sizeof (sa1); | |
3373 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3374 | contact = Fplist_put (contact, QClocal, | |
3375 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3376 | } | |
3377 | #endif | |
e690ca94 KS |
3378 | } |
3379 | ||
54b3b62f YM |
3380 | immediate_quit = 0; |
3381 | ||
dd2a17ab | 3382 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3383 | if (res != &ai) |
54b3b62f YM |
3384 | { |
3385 | BLOCK_INPUT; | |
3386 | freeaddrinfo (res); | |
3387 | UNBLOCK_INPUT; | |
3388 | } | |
dd2a17ab KS |
3389 | #endif |
3390 | ||
e690ca94 KS |
3391 | /* Discard the unwind protect for closing S, if any. */ |
3392 | specpdl_ptr = specpdl + count1; | |
3393 | ||
3394 | /* Unwind bind_polling_period and request_sigio. */ | |
3395 | unbind_to (count, Qnil); | |
3396 | ||
dd2a17ab KS |
3397 | if (s < 0) |
3398 | { | |
dd2a17ab KS |
3399 | /* If non-blocking got this far - and failed - assume non-blocking is |
3400 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3401 | the normal blocking calls to open-network-stream handles this error |
3402 | better. */ | |
3403 | if (is_non_blocking_client) | |
dd2a17ab | 3404 | return Qnil; |
dd2a17ab | 3405 | |
d0d6b7c5 | 3406 | errno = xerrno; |
e690ca94 KS |
3407 | if (is_server) |
3408 | report_file_error ("make server process failed", contact); | |
3409 | else | |
3410 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3411 | } |
44ade2e9 | 3412 | |
e690ca94 | 3413 | #endif /* not TERM */ |
d0d6b7c5 JB |
3414 | |
3415 | inch = s; | |
59f23005 | 3416 | outch = s; |
d0d6b7c5 JB |
3417 | |
3418 | if (!NILP (buffer)) | |
3419 | buffer = Fget_buffer_create (buffer); | |
3420 | proc = make_process (name); | |
3421 | ||
3422 | chan_process[inch] = proc; | |
3423 | ||
3424 | #ifdef O_NONBLOCK | |
3425 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3426 | #else | |
3427 | #ifdef O_NDELAY | |
3428 | fcntl (inch, F_SETFL, O_NDELAY); | |
3429 | #endif | |
3430 | #endif | |
3431 | ||
e690ca94 KS |
3432 | p = XPROCESS (proc); |
3433 | ||
3434 | p->childp = contact; | |
faa7db08 | 3435 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
177c0ea7 | 3436 | |
e690ca94 KS |
3437 | p->buffer = buffer; |
3438 | p->sentinel = sentinel; | |
3439 | p->filter = filter; | |
60f0fb11 | 3440 | p->filter_multibyte = !NILP (buffer_defaults.enable_multibyte_characters); |
03f04413 KH |
3441 | /* Override the above only if :filter-multibyte is specified. */ |
3442 | if (! NILP (Fplist_member (contact, QCfilter_multibyte))) | |
60f0fb11 | 3443 | p->filter_multibyte = !NILP (Fplist_get (contact, QCfilter_multibyte)); |
e690ca94 KS |
3444 | p->log = Fplist_get (contact, QClog); |
3445 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
60f0fb11 | 3446 | p->kill_without_query = 1; |
e690ca94 KS |
3447 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
3448 | p->command = Qt; | |
6bfd98e7 | 3449 | p->pid = 0; |
60f0fb11 SM |
3450 | p->infd = inch; |
3451 | p->outfd = outch; | |
e690ca94 KS |
3452 | if (is_server && socktype == SOCK_STREAM) |
3453 | p->status = Qlisten; | |
dd2a17ab | 3454 | |
f523e0c3 SM |
3455 | /* Make the process marker point into the process buffer (if any). */ |
3456 | if (BUFFERP (buffer)) | |
3457 | set_marker_both (p->mark, buffer, | |
3458 | BUF_ZV (XBUFFER (buffer)), | |
3459 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3460 | ||
dd2a17ab | 3461 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3462 | if (is_non_blocking_client) |
dd2a17ab KS |
3463 | { |
3464 | /* We may get here if connect did succeed immediately. However, | |
3465 | in that case, we still need to signal this like a non-blocking | |
3466 | connection. */ | |
e690ca94 | 3467 | p->status = Qconnect; |
dd2a17ab KS |
3468 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3469 | { | |
3470 | FD_SET (inch, &connect_wait_mask); | |
3471 | num_pending_connects++; | |
3472 | } | |
3473 | } | |
3474 | else | |
3475 | #endif | |
e690ca94 KS |
3476 | /* A server may have a client filter setting of Qt, but it must |
3477 | still listen for incoming connects unless it is stopped. */ | |
3478 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3479 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3480 | { |
3481 | FD_SET (inch, &input_wait_mask); | |
3482 | FD_SET (inch, &non_keyboard_wait_mask); | |
3483 | } | |
3484 | ||
7d0e672e RS |
3485 | if (inch > max_process_desc) |
3486 | max_process_desc = inch; | |
d0d6b7c5 | 3487 | |
e690ca94 KS |
3488 | tem = Fplist_member (contact, QCcoding); |
3489 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3490 | tem = Qnil; /* No error message (too late!). */ | |
3491 | ||
67918941 RS |
3492 | { |
3493 | /* Setup coding systems for communicating with the network stream. */ | |
3494 | struct gcpro gcpro1; | |
3495 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3496 | Lisp_Object coding_systems = Qt; | |
3497 | Lisp_Object args[5], val; | |
3498 | ||
e690ca94 | 3499 | if (!NILP (tem)) |
2ccf3102 KS |
3500 | { |
3501 | val = XCAR (XCDR (tem)); | |
3502 | if (CONSP (val)) | |
3503 | val = XCAR (val); | |
3504 | } | |
e690ca94 | 3505 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3506 | val = Vcoding_system_for_read; |
41d03b9a GM |
3507 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3508 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3509 | /* We dare not decode end-of-line format by setting VAL to |
3510 | Qraw_text, because the existing Emacs Lisp libraries | |
3511 | assume that they receive bare code including a sequene of | |
3512 | CR LF. */ | |
3513 | val = Qnil; | |
3514 | else | |
3515 | { | |
991234f0 KS |
3516 | if (NILP (host) || NILP (service)) |
3517 | coding_systems = Qnil; | |
3518 | else | |
3519 | { | |
3520 | args[0] = Qopen_network_stream, args[1] = name, | |
3521 | args[2] = buffer, args[3] = host, args[4] = service; | |
3522 | GCPRO1 (proc); | |
3523 | coding_systems = Ffind_operation_coding_system (5, args); | |
3524 | UNGCPRO; | |
3525 | } | |
67918941 | 3526 | if (CONSP (coding_systems)) |
70949dac | 3527 | val = XCAR (coding_systems); |
67918941 | 3528 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3529 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3530 | else |
3531 | val = Qnil; | |
3532 | } | |
e690ca94 | 3533 | p->decode_coding_system = val; |
0fa1789e | 3534 | |
e690ca94 | 3535 | if (!NILP (tem)) |
2ccf3102 KS |
3536 | { |
3537 | val = XCAR (XCDR (tem)); | |
3538 | if (CONSP (val)) | |
3539 | val = XCDR (val); | |
3540 | } | |
e690ca94 | 3541 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3542 | val = Vcoding_system_for_write; |
3543 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3544 | val = Qnil; | |
3545 | else | |
3546 | { | |
3547 | if (EQ (coding_systems, Qt)) | |
3548 | { | |
991234f0 KS |
3549 | if (NILP (host) || NILP (service)) |
3550 | coding_systems = Qnil; | |
3551 | else | |
3552 | { | |
3553 | args[0] = Qopen_network_stream, args[1] = name, | |
3554 | args[2] = buffer, args[3] = host, args[4] = service; | |
3555 | GCPRO1 (proc); | |
3556 | coding_systems = Ffind_operation_coding_system (5, args); | |
3557 | UNGCPRO; | |
3558 | } | |
67918941 RS |
3559 | } |
3560 | if (CONSP (coding_systems)) | |
70949dac | 3561 | val = XCDR (coding_systems); |
67918941 | 3562 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3563 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3564 | else |
3565 | val = Qnil; | |
3566 | } | |
e690ca94 | 3567 | p->encode_coding_system = val; |
67918941 | 3568 | } |
03f04413 | 3569 | setup_process_coding_systems (proc); |
0fa1789e | 3570 | |
e690ca94 | 3571 | p->decoding_buf = make_uninit_string (0); |
60f0fb11 | 3572 | p->decoding_carryover = 0; |
e690ca94 | 3573 | p->encoding_buf = make_uninit_string (0); |
0fa1789e | 3574 | |
e690ca94 | 3575 | p->inherit_coding_system_flag |
e6fca843 | 3576 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3577 | |
d0d6b7c5 JB |
3578 | UNGCPRO; |
3579 | return proc; | |
3580 | } | |
3581 | #endif /* HAVE_SOCKETS */ | |
3582 | ||
161933c7 | 3583 | \f |
b8c7fd71 | 3584 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
161933c7 KS |
3585 | |
3586 | #ifdef SIOCGIFCONF | |
3587 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3588 | doc: /* Return an alist of all network interfaces and their network address. | |
3589 | Each element is a cons, the car of which is a string containing the | |
3590 | interface name, and the cdr is the network address in internal | |
e1283999 | 3591 | format; see the description of ADDRESS in `make-network-process'. */) |
161933c7 KS |
3592 | () |
3593 | { | |
3594 | struct ifconf ifconf; | |
3595 | struct ifreq *ifreqs = NULL; | |
3596 | int ifaces = 0; | |
3597 | int buf_size, s; | |
3598 | Lisp_Object res; | |
3599 | ||
3600 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3601 | if (s < 0) | |
3602 | return Qnil; | |
3603 | ||
3604 | again: | |
3605 | ifaces += 25; | |
3606 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3607 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3608 | if (!ifreqs) | |
3609 | { | |
3610 | close (s); | |
3611 | return Qnil; | |
3612 | } | |
3613 | ||
3614 | ifconf.ifc_len = buf_size; | |
3615 | ifconf.ifc_req = ifreqs; | |
3616 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3617 | { | |
3618 | close (s); | |
3619 | return Qnil; | |
3620 | } | |
3621 | ||
3622 | if (ifconf.ifc_len == buf_size) | |
3623 | goto again; | |
3624 | ||
3625 | close (s); | |
3626 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3627 | ||
3628 | res = Qnil; | |
3629 | while (--ifaces >= 0) | |
3630 | { | |
3631 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3632 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3633 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3634 | continue; | |
3635 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3636 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3637 | res = Fcons (Fcons (build_string (namebuf), | |
3638 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3639 | sizeof (struct sockaddr))), | |
3640 | res); | |
3641 | } | |
3642 | ||
3643 | return res; | |
3644 | } | |
b8c7fd71 | 3645 | #endif /* SIOCGIFCONF */ |
161933c7 KS |
3646 | |
3647 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3648 | ||
3649 | struct ifflag_def { | |
3650 | int flag_bit; | |
3651 | char *flag_sym; | |
3652 | }; | |
3653 | ||
3654 | static struct ifflag_def ifflag_table[] = { | |
3655 | #ifdef IFF_UP | |
3656 | { IFF_UP, "up" }, | |
3657 | #endif | |
3658 | #ifdef IFF_BROADCAST | |
3659 | { IFF_BROADCAST, "broadcast" }, | |
3660 | #endif | |
3661 | #ifdef IFF_DEBUG | |
3662 | { IFF_DEBUG, "debug" }, | |
3663 | #endif | |
3664 | #ifdef IFF_LOOPBACK | |
3665 | { IFF_LOOPBACK, "loopback" }, | |
3666 | #endif | |
3667 | #ifdef IFF_POINTOPOINT | |
3668 | { IFF_POINTOPOINT, "pointopoint" }, | |
3669 | #endif | |
3670 | #ifdef IFF_RUNNING | |
3671 | { IFF_RUNNING, "running" }, | |
3672 | #endif | |
3673 | #ifdef IFF_NOARP | |
3674 | { IFF_NOARP, "noarp" }, | |
3675 | #endif | |
3676 | #ifdef IFF_PROMISC | |
3677 | { IFF_PROMISC, "promisc" }, | |
3678 | #endif | |
3679 | #ifdef IFF_NOTRAILERS | |
3680 | { IFF_NOTRAILERS, "notrailers" }, | |
3681 | #endif | |
3682 | #ifdef IFF_ALLMULTI | |
3683 | { IFF_ALLMULTI, "allmulti" }, | |
3684 | #endif | |
3685 | #ifdef IFF_MASTER | |
3686 | { IFF_MASTER, "master" }, | |
3687 | #endif | |
3688 | #ifdef IFF_SLAVE | |
3689 | { IFF_SLAVE, "slave" }, | |
3690 | #endif | |
3691 | #ifdef IFF_MULTICAST | |
3692 | { IFF_MULTICAST, "multicast" }, | |
3693 | #endif | |
3694 | #ifdef IFF_PORTSEL | |
3695 | { IFF_PORTSEL, "portsel" }, | |
3696 | #endif | |
3697 | #ifdef IFF_AUTOMEDIA | |
3698 | { IFF_AUTOMEDIA, "automedia" }, | |
3699 | #endif | |
3700 | #ifdef IFF_DYNAMIC | |
3701 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3702 | #endif |
2026418c YM |
3703 | #ifdef IFF_OACTIVE |
3704 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3705 | #endif |
3706 | #ifdef IFF_SIMPLEX | |
3707 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3708 | #endif | |
3709 | #ifdef IFF_LINK0 | |
3710 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3711 | #endif | |
3712 | #ifdef IFF_LINK1 | |
3713 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3714 | #endif | |
3715 | #ifdef IFF_LINK2 | |
3716 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
161933c7 KS |
3717 | #endif |
3718 | { 0, 0 } | |
3719 | }; | |
3720 | ||
2ccf3102 | 3721 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, |
161933c7 KS |
3722 | doc: /* Return information about network interface named IFNAME. |
3723 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3724 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3725 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3726 | FLAGS is the current flags of the interface. */) | |
3727 | (ifname) | |
3728 | Lisp_Object ifname; | |
3729 | { | |
3730 | struct ifreq rq; | |
3731 | Lisp_Object res = Qnil; | |
3732 | Lisp_Object elt; | |
3733 | int s; | |
3734 | int any = 0; | |
3735 | ||
3736 | CHECK_STRING (ifname); | |
3737 | ||
3738 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
3739 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
3740 | ||
3741 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3742 | if (s < 0) | |
3743 | return Qnil; | |
3744 | ||
3745 | elt = Qnil; | |
559c53b3 | 3746 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) |
161933c7 KS |
3747 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3748 | { | |
3749 | int flags = rq.ifr_flags; | |
3750 | struct ifflag_def *fp; | |
3751 | int fnum; | |
3752 | ||
3753 | any++; | |
82a80058 | 3754 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
161933c7 KS |
3755 | { |
3756 | if (flags & fp->flag_bit) | |
3757 | { | |
3758 | elt = Fcons (intern (fp->flag_sym), elt); | |
3759 | flags -= fp->flag_bit; | |
3760 | } | |
3761 | } | |
3762 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3763 | { | |
3764 | if (flags & (1 << fnum)) | |
3765 | { | |
3766 | elt = Fcons (make_number (fnum), elt); | |
3767 | } | |
3768 | } | |
3769 | } | |
3770 | #endif | |
3771 | res = Fcons (elt, res); | |
3772 | ||
3773 | elt = Qnil; | |
559c53b3 | 3774 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) |
161933c7 KS |
3775 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3776 | { | |
b8c7fd71 | 3777 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); |
161933c7 KS |
3778 | register struct Lisp_Vector *p = XVECTOR (hwaddr); |
3779 | int n; | |
3780 | ||
3781 | any++; | |
3782 | for (n = 0; n < 6; n++) | |
3783 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
e1283999 | 3784 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); |
161933c7 KS |
3785 | } |
3786 | #endif | |
3787 | res = Fcons (elt, res); | |
3788 | ||
3789 | elt = Qnil; | |
2026418c | 3790 | #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR)) |
161933c7 KS |
3791 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3792 | { | |
3793 | any++; | |
2026418c | 3794 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
161933c7 | 3795 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3796 | #else |
3797 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3798 | #endif | |
161933c7 KS |
3799 | } |
3800 | #endif | |
3801 | res = Fcons (elt, res); | |
3802 | ||
3803 | elt = Qnil; | |
559c53b3 | 3804 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
161933c7 KS |
3805 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3806 | { | |
3807 | any++; | |
3808 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3809 | } | |
3810 | #endif | |
3811 | res = Fcons (elt, res); | |
3812 | ||
3813 | elt = Qnil; | |
559c53b3 | 3814 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) |
161933c7 KS |
3815 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3816 | { | |
3817 | any++; | |
3818 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3819 | } | |
3820 | #endif | |
3821 | res = Fcons (elt, res); | |
3822 | ||
3823 | close (s); | |
3824 | ||
3825 | return any ? res : Qnil; | |
3826 | } | |
3827 | #endif | |
3828 | #endif /* HAVE_SOCKETS */ | |
3829 | ||
04391069 RS |
3830 | /* Turn off input and output for process PROC. */ |
3831 | ||
6b53bb85 | 3832 | void |
d0d6b7c5 JB |
3833 | deactivate_process (proc) |
3834 | Lisp_Object proc; | |
3835 | { | |
3836 | register int inchannel, outchannel; | |
3837 | register struct Lisp_Process *p = XPROCESS (proc); | |
3838 | ||
60f0fb11 SM |
3839 | inchannel = p->infd; |
3840 | outchannel = p->outfd; | |
d0d6b7c5 | 3841 | |
2d942bfa | 3842 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3843 | if (p->read_output_delay > 0) |
2d942bfa KS |
3844 | { |
3845 | if (--process_output_delay_count < 0) | |
3846 | process_output_delay_count = 0; | |
60f0fb11 SM |
3847 | p->read_output_delay = 0; |
3848 | p->read_output_skip = 0; | |
2d942bfa KS |
3849 | } |
3850 | #endif | |
f3d9532b | 3851 | |
a9f2c884 | 3852 | if (inchannel >= 0) |
d0d6b7c5 JB |
3853 | { |
3854 | /* Beware SIGCHLD hereabouts. */ | |
3855 | flush_pending_output (inchannel); | |
3856 | #ifdef VMS | |
3857 | { | |
3858 | VMS_PROC_STUFF *get_vms_process_pointer (), *vs; | |
3859 | sys$dassgn (outchannel); | |
c6c6865d | 3860 | vs = get_vms_process_pointer (p->pid); |
d0d6b7c5 JB |
3861 | if (vs) |
3862 | give_back_vms_process_stuff (vs); | |
3863 | } | |
3864 | #else | |
68c45bf0 | 3865 | emacs_close (inchannel); |
a9f2c884 | 3866 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3867 | emacs_close (outchannel); |
d0d6b7c5 JB |
3868 | #endif |
3869 | ||
60f0fb11 SM |
3870 | p->infd = -1; |
3871 | p->outfd = -1; | |
e690ca94 KS |
3872 | #ifdef DATAGRAM_SOCKETS |
3873 | if (DATAGRAM_CHAN_P (inchannel)) | |
3874 | { | |
3875 | xfree (datagram_address[inchannel].sa); | |
3876 | datagram_address[inchannel].sa = 0; | |
3877 | datagram_address[inchannel].len = 0; | |
3878 | } | |
3879 | #endif | |
d0d6b7c5 JB |
3880 | chan_process[inchannel] = Qnil; |
3881 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3882 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3883 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3884 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3885 | { | |
3886 | FD_CLR (inchannel, &connect_wait_mask); | |
3887 | if (--num_pending_connects < 0) | |
3888 | abort (); | |
3889 | } | |
bad49fc7 | 3890 | #endif |
7d0e672e RS |
3891 | if (inchannel == max_process_desc) |
3892 | { | |
3893 | int i; | |
3894 | /* We just closed the highest-numbered process input descriptor, | |
3895 | so recompute the highest-numbered one now. */ | |
3896 | max_process_desc = 0; | |
3897 | for (i = 0; i < MAXDESC; i++) | |
3898 | if (!NILP (chan_process[i])) | |
3899 | max_process_desc = i; | |
3900 | } | |
d0d6b7c5 JB |
3901 | } |
3902 | } | |
3903 | ||
3904 | /* Close all descriptors currently in use for communication | |
3905 | with subprocess. This is used in a newly-forked subprocess | |
3906 | to get rid of irrelevant descriptors. */ | |
3907 | ||
6b53bb85 | 3908 | void |
d0d6b7c5 JB |
3909 | close_process_descs () |
3910 | { | |
e98d950b | 3911 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
3912 | int i; |
3913 | for (i = 0; i < MAXDESC; i++) | |
3914 | { | |
3915 | Lisp_Object process; | |
3916 | process = chan_process[i]; | |
3917 | if (!NILP (process)) | |
3918 | { | |
60f0fb11 SM |
3919 | int in = XPROCESS (process)->infd; |
3920 | int out = XPROCESS (process)->outfd; | |
a9f2c884 | 3921 | if (in >= 0) |
68c45bf0 | 3922 | emacs_close (in); |
a9f2c884 | 3923 | if (out >= 0 && in != out) |
68c45bf0 | 3924 | emacs_close (out); |
d0d6b7c5 JB |
3925 | } |
3926 | } | |
e98d950b | 3927 | #endif |
d0d6b7c5 JB |
3928 | } |
3929 | \f | |
3930 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3931 | 0, 4, 0, |
fdb82f93 PJ |
3932 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3933 | It is read into the process' buffers or given to their filter functions. | |
3934 | Non-nil arg PROCESS means do not return until some output has been received | |
3935 | from PROCESS. | |
5088da42 KS |
3936 | |
3937 | Non-nil second arg SECONDS and third arg MILLISEC are number of | |
3938 | seconds and milliseconds to wait; return after that much time whether | |
3939 | or not there is input. If SECONDS is a floating point number, | |
3940 | it specifies a fractional number of seconds to wait. | |
3941 | ||
107ed38d KS |
3942 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3943 | from PROCESS, suspending reading output from other processes. | |
3944 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 3945 | Return non-nil if we received any output before the timeout expired. */) |
5088da42 KS |
3946 | (process, seconds, millisec, just_this_one) |
3947 | register Lisp_Object process, seconds, millisec, just_this_one; | |
d0d6b7c5 | 3948 | { |
5088da42 | 3949 | int secs, usecs = 0; |
d0d6b7c5 | 3950 | |
0748d150 | 3951 | if (! NILP (process)) |
b7826503 | 3952 | CHECK_PROCESS (process); |
107ed38d KS |
3953 | else |
3954 | just_this_one = Qnil; | |
0748d150 | 3955 | |
5088da42 | 3956 | if (!NILP (seconds)) |
d0d6b7c5 | 3957 | { |
5088da42 KS |
3958 | if (INTEGERP (seconds)) |
3959 | secs = XINT (seconds); | |
3960 | else if (FLOATP (seconds)) | |
3961 | { | |
3962 | double timeout = XFLOAT_DATA (seconds); | |
3963 | secs = (int) timeout; | |
3964 | usecs = (int) ((timeout - (double) secs) * 1000000); | |
3965 | } | |
3966 | else | |
3967 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 3968 | |
5088da42 KS |
3969 | if (INTEGERP (millisec)) |
3970 | { | |
3971 | int carry; | |
3972 | usecs += XINT (millisec) * 1000; | |
3973 | carry = usecs / 1000000; | |
3974 | secs += carry; | |
3975 | if ((usecs -= carry * 1000000) < 0) | |
3976 | { | |
3977 | secs--; | |
3978 | usecs += 1000000; | |
3979 | } | |
3980 | } | |
d0d6b7c5 | 3981 | |
5088da42 KS |
3982 | if (secs < 0 || (secs == 0 && usecs == 0)) |
3983 | secs = -1, usecs = 0; | |
d0d6b7c5 JB |
3984 | } |
3985 | else | |
5088da42 | 3986 | secs = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
3987 | |
3988 | return | |
5088da42 | 3989 | (wait_reading_process_output (secs, usecs, 0, 0, |
214d6069 KS |
3990 | Qnil, |
3991 | !NILP (process) ? XPROCESS (process) : NULL, | |
3992 | NILP (just_this_one) ? 0 : | |
3993 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3994 | ? Qt : Qnil); |
3995 | } | |
3996 | ||
e690ca94 KS |
3997 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3998 | ||
3999 | static int connect_counter = 0; | |
4000 | ||
4001 | static void | |
4002 | server_accept_connection (server, channel) | |
4003 | Lisp_Object server; | |
4004 | int channel; | |
4005 | { | |
4006 | Lisp_Object proc, caller, name, buffer; | |
4007 | Lisp_Object contact, host, service; | |
4008 | struct Lisp_Process *ps= XPROCESS (server); | |
4009 | struct Lisp_Process *p; | |
4010 | int s; | |
4011 | union u_sockaddr { | |
4012 | struct sockaddr sa; | |
4013 | struct sockaddr_in in; | |
e1652a86 KS |
4014 | #ifdef AF_INET6 |
4015 | struct sockaddr_in6 in6; | |
4016 | #endif | |
e690ca94 KS |
4017 | #ifdef HAVE_LOCAL_SOCKETS |
4018 | struct sockaddr_un un; | |
4019 | #endif | |
4020 | } saddr; | |
4021 | int len = sizeof saddr; | |
4022 | ||
4023 | s = accept (channel, &saddr.sa, &len); | |
4024 | ||
4025 | if (s < 0) | |
4026 | { | |
4027 | int code = errno; | |
4028 | ||
4029 | if (code == EAGAIN) | |
4030 | return; | |
4031 | #ifdef EWOULDBLOCK | |
4032 | if (code == EWOULDBLOCK) | |
4033 | return; | |
4034 | #endif | |
4035 | ||
4036 | if (!NILP (ps->log)) | |
4037 | call3 (ps->log, server, Qnil, | |
4038 | concat3 (build_string ("accept failed with code"), | |
4039 | Fnumber_to_string (make_number (code)), | |
4040 | build_string ("\n"))); | |
4041 | return; | |
4042 | } | |
4043 | ||
4044 | connect_counter++; | |
4045 | ||
4046 | /* Setup a new process to handle the connection. */ | |
4047 | ||
4048 | /* Generate a unique identification of the caller, and build contact | |
4049 | information for this process. */ | |
4050 | host = Qt; | |
4051 | service = Qnil; | |
4052 | switch (saddr.sa.sa_family) | |
4053 | { | |
4054 | case AF_INET: | |
4055 | { | |
4056 | Lisp_Object args[5]; | |
4057 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4058 | args[0] = build_string ("%d.%d.%d.%d"); | |
4059 | args[1] = make_number (*ip++); | |
4060 | args[2] = make_number (*ip++); | |
4061 | args[3] = make_number (*ip++); | |
4062 | args[4] = make_number (*ip++); | |
4063 | host = Fformat (5, args); | |
4064 | service = make_number (ntohs (saddr.in.sin_port)); | |
4065 | ||
4066 | args[0] = build_string (" <%s:%d>"); | |
4067 | args[1] = host; | |
4068 | args[2] = service; | |
4069 | caller = Fformat (3, args); | |
4070 | } | |
4071 | break; | |
4072 | ||
e1652a86 KS |
4073 | #ifdef AF_INET6 |
4074 | case AF_INET6: | |
4075 | { | |
4076 | Lisp_Object args[9]; | |
4077 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4078 | int i; | |
4079 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4080 | for (i = 0; i < 8; i++) | |
4081 | args[i+1] = make_number (ntohs(ip6[i])); | |
4082 | host = Fformat (9, args); | |
4083 | service = make_number (ntohs (saddr.in.sin_port)); | |
4084 | ||
4085 | args[0] = build_string (" <[%s]:%d>"); | |
4086 | args[1] = host; | |
4087 | args[2] = service; | |
4088 | caller = Fformat (3, args); | |
4089 | } | |
4090 | break; | |
4091 | #endif | |
4092 | ||
e690ca94 KS |
4093 | #ifdef HAVE_LOCAL_SOCKETS |
4094 | case AF_LOCAL: | |
4095 | #endif | |
4096 | default: | |
4097 | caller = Fnumber_to_string (make_number (connect_counter)); | |
4098 | caller = concat3 (build_string (" <*"), caller, build_string ("*>")); | |
4099 | break; | |
4100 | } | |
4101 | ||
4102 | /* Create a new buffer name for this process if it doesn't have a | |
4103 | filter. The new buffer name is based on the buffer name or | |
4104 | process name of the server process concatenated with the caller | |
4105 | identification. */ | |
4106 | ||
4107 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4108 | buffer = Qnil; | |
4109 | else | |
4110 | { | |
4111 | buffer = ps->buffer; | |
4112 | if (!NILP (buffer)) | |
4113 | buffer = Fbuffer_name (buffer); | |
4114 | else | |
4115 | buffer = ps->name; | |
4116 | if (!NILP (buffer)) | |
4117 | { | |
4118 | buffer = concat2 (buffer, caller); | |
4119 | buffer = Fget_buffer_create (buffer); | |
4120 | } | |
4121 | } | |
4122 | ||
4123 | /* Generate a unique name for the new server process. Combine the | |
4124 | server process name with the caller identification. */ | |
4125 | ||
4126 | name = concat2 (ps->name, caller); | |
4127 | proc = make_process (name); | |
4128 | ||
4129 | chan_process[s] = proc; | |
4130 | ||
4131 | #ifdef O_NONBLOCK | |
4132 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4133 | #else | |
4134 | #ifdef O_NDELAY | |
4135 | fcntl (s, F_SETFL, O_NDELAY); | |
4136 | #endif | |
4137 | #endif | |
4138 | ||
4139 | p = XPROCESS (proc); | |
4140 | ||
4141 | /* Build new contact information for this setup. */ | |
4142 | contact = Fcopy_sequence (ps->childp); | |
4143 | contact = Fplist_put (contact, QCserver, Qnil); | |
4144 | contact = Fplist_put (contact, QChost, host); | |
4145 | if (!NILP (service)) | |
4146 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4147 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4148 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4149 | #ifdef HAVE_GETSOCKNAME | |
4150 | len = sizeof saddr; | |
2185db04 | 4151 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4152 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4153 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4154 | #endif | |
4155 | ||
4156 | p->childp = contact; | |
faa7db08 | 4157 | p->plist = Fcopy_sequence (ps->plist); |
ac4a7584 | 4158 | |
e690ca94 KS |
4159 | p->buffer = buffer; |
4160 | p->sentinel = ps->sentinel; | |
4161 | p->filter = ps->filter; | |
4162 | p->command = Qnil; | |
6bfd98e7 | 4163 | p->pid = 0; |
60f0fb11 SM |
4164 | p->infd = s; |
4165 | p->outfd = s; | |
e690ca94 KS |
4166 | p->status = Qrun; |
4167 | ||
4168 | /* Client processes for accepted connections are not stopped initially. */ | |
4169 | if (!EQ (p->filter, Qt)) | |
4170 | { | |
4171 | FD_SET (s, &input_wait_mask); | |
4172 | FD_SET (s, &non_keyboard_wait_mask); | |
4173 | } | |
4174 | ||
4175 | if (s > max_process_desc) | |
4176 | max_process_desc = s; | |
4177 | ||
177c0ea7 | 4178 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4179 | This seems to be the proper thing to do, as the coding system |
4180 | of the new process should reflect the settings at the time the | |
4181 | server socket was opened; not the current settings. */ | |
4182 | ||
4183 | p->decode_coding_system = ps->decode_coding_system; | |
4184 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4185 | setup_process_coding_systems (proc); |
e690ca94 KS |
4186 | |
4187 | p->decoding_buf = make_uninit_string (0); | |
60f0fb11 | 4188 | p->decoding_carryover = 0; |
e690ca94 | 4189 | p->encoding_buf = make_uninit_string (0); |
e690ca94 KS |
4190 | |
4191 | p->inherit_coding_system_flag | |
60f0fb11 | 4192 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 KS |
4193 | |
4194 | if (!NILP (ps->log)) | |
4195 | call3 (ps->log, server, proc, | |
4196 | concat3 (build_string ("accept from "), | |
4197 | (STRINGP (host) ? host : build_string ("-")), | |
4198 | build_string ("\n"))); | |
4199 | ||
bed9664a | 4200 | if (!NILP (p->sentinel)) |
177c0ea7 | 4201 | exec_sentinel (proc, |
e690ca94 KS |
4202 | concat3 (build_string ("open from "), |
4203 | (STRINGP (host) ? host : build_string ("-")), | |
4204 | build_string ("\n"))); | |
4205 | } | |
4206 | ||
d0d6b7c5 JB |
4207 | /* This variable is different from waiting_for_input in keyboard.c. |
4208 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4209 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4210 | for user-input when that process-filter was called. |
4211 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4212 | lisp code is being evalled. |
4213 | This is also used in record_asynch_buffer_change. | |
4214 | For that purpose, this must be 0 | |
214d6069 | 4215 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4216 | static int waiting_for_user_input_p; |
4217 | ||
42ec1561 CY |
4218 | static Lisp_Object |
4219 | wait_reading_process_output_unwind (data) | |
4220 | Lisp_Object data; | |
4221 | { | |
4222 | waiting_for_user_input_p = XINT (data); | |
4223 | return Qnil; | |
4224 | } | |
4225 | ||
c573ae8e | 4226 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4227 | static void |
214d6069 | 4228 | wait_reading_process_output_1 () |
c573ae8e RS |
4229 | { |
4230 | } | |
4231 | ||
e1e541bd KS |
4232 | /* Use a wrapper around select to work around a bug in gdb 5.3. |
4233 | Normally, the wrapper is optimzed away by inlining. | |
4234 | ||
4235 | If emacs is stopped inside select, the gdb backtrace doesn't | |
4236 | show the function which called select, so it is practically | |
4237 | impossible to step through wait_reading_process_output. */ | |
4238 | ||
4239 | #ifndef select | |
4240 | static INLINE int | |
4241 | select_wrapper (n, rfd, wfd, xfd, tmo) | |
4242 | int n; | |
4243 | SELECT_TYPE *rfd, *wfd, *xfd; | |
4244 | EMACS_TIME *tmo; | |
4245 | { | |
4246 | return select (n, rfd, wfd, xfd, tmo); | |
4247 | } | |
4248 | #define select select_wrapper | |
4249 | #endif | |
4250 | ||
d0d6b7c5 JB |
4251 | /* Read and dispose of subprocess output while waiting for timeout to |
4252 | elapse and/or keyboard input to be available. | |
4253 | ||
de6fd4b9 | 4254 | TIME_LIMIT is: |
d0d6b7c5 JB |
4255 | timeout in seconds, or |
4256 | zero for no limit, or | |
4257 | -1 means gobble data immediately available but don't wait for any. | |
4258 | ||
de6fd4b9 RS |
4259 | MICROSECS is: |
4260 | an additional duration to wait, measured in microseconds. | |
4261 | If this is nonzero and time_limit is 0, then the timeout | |
4262 | consists of MICROSECS only. | |
6e4f3667 | 4263 | |
de6fd4b9 | 4264 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4265 | 0 to ignore keyboard input, or |
4266 | 1 to return when input is available, or | |
84aa3ace | 4267 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4268 | the quit handler, or |
b89a415a KS |
4269 | |
4270 | DO_DISPLAY != 0 means redisplay should be done to show subprocess | |
107ed38d | 4271 | output that arrives. |
d0d6b7c5 | 4272 | |
b89a415a KS |
4273 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4274 | (and gobble terminal input into the buffer if any arrives). | |
4275 | ||
4276 | If WAIT_PROC is specified, wait until something arrives from that | |
e0f24100 | 4277 | process. The return value is true if we read some input from |
b89a415a KS |
4278 | that process. |
4279 | ||
4280 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4281 | (suspending output from other processes). A negative value | |
4282 | means don't run any timers either. | |
4283 | ||
e0f24100 | 4284 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4285 | received input from that process before the timeout elapsed. |
e0f24100 | 4286 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4287 | |
dfcf069d | 4288 | int |
214d6069 KS |
4289 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
4290 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
4291 | int time_limit, microsecs, read_kbd, do_display; |
4292 | Lisp_Object wait_for_cell; | |
4293 | struct Lisp_Process *wait_proc; | |
4294 | int just_wait_proc; | |
d0d6b7c5 | 4295 | { |
41d03b9a | 4296 | register int channel, nfds; |
855448dc | 4297 | SELECT_TYPE Available; |
bad49fc7 | 4298 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4299 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4300 | int check_connect; |
4301 | #endif | |
4302 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4303 | int xerrno; |
4304 | Lisp_Object proc; | |
41d03b9a | 4305 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4306 | int wait_channel = -1; |
d0d6b7c5 | 4307 | int got_some_input = 0; |
42ec1561 | 4308 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4309 | |
4310 | FD_ZERO (&Available); | |
bad49fc7 | 4311 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4312 | FD_ZERO (&Connecting); |
bad49fc7 | 4313 | #endif |
d0d6b7c5 | 4314 | |
b89a415a KS |
4315 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4316 | if (wait_proc != NULL) | |
60f0fb11 | 4317 | wait_channel = wait_proc->infd; |
84aa3ace | 4318 | |
42ec1561 CY |
4319 | record_unwind_protect (wait_reading_process_output_unwind, |
4320 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4321 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4322 | |
4323 | /* Since we may need to wait several times, | |
4324 | compute the absolute time to return at. */ | |
4325 | if (time_limit || microsecs) | |
4326 | { | |
4327 | EMACS_GET_TIME (end_time); | |
4328 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4329 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4330 | } | |
19310311 | 4331 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4332 | /* AlainF 5-Jul-1996 |
4333 | HP-UX 10.10 seem to have problems with signals coming in | |
4334 | Causes "poll: interrupted system call" messages when Emacs is run | |
4335 | in an X window | |
75eb23f1 RS |
4336 | Turn off periodic alarms (in case they are in use), |
4337 | and then turn off any other atimers. */ | |
4338 | stop_polling (); | |
30904ab7 | 4339 | turn_on_atimers (0); |
19310311 | 4340 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
d0d6b7c5 | 4341 | |
d0d6b7c5 JB |
4342 | while (1) |
4343 | { | |
c0239a0b RS |
4344 | int timeout_reduced_for_timers = 0; |
4345 | ||
d0d6b7c5 JB |
4346 | /* If calling from keyboard input, do not quit |
4347 | since we want to return C-g as an input character. | |
4348 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4349 | if (read_kbd >= 0) |
d0d6b7c5 | 4350 | QUIT; |
43ff45a0 SM |
4351 | #ifdef SYNC_INPUT |
4352 | else if (interrupt_input_pending) | |
4353 | handle_async_input (); | |
4354 | #endif | |
d0d6b7c5 | 4355 | |
889255b4 | 4356 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4357 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4358 | break; |
4359 | ||
d0d6b7c5 JB |
4360 | /* Compute time from now till when time limit is up */ |
4361 | /* Exit if already run out */ | |
4362 | if (time_limit == -1) | |
4363 | { | |
4364 | /* -1 specified for timeout means | |
4365 | gobble output available now | |
4366 | but don't wait at all. */ | |
4367 | ||
4368 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4369 | } | |
4370 | else if (time_limit || microsecs) | |
4371 | { | |
4372 | EMACS_GET_TIME (timeout); | |
4373 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4374 | if (EMACS_TIME_NEG_P (timeout)) | |
4375 | break; | |
4376 | } | |
4377 | else | |
4378 | { | |
4379 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4380 | } | |
4381 | ||
f854a00b RS |
4382 | /* Normally we run timers here. |
4383 | But not if wait_for_cell; in those cases, | |
4384 | the wait is supposed to be short, | |
4385 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4386 | if (NILP (wait_for_cell) |
b89a415a | 4387 | && just_wait_proc >= 0) |
fb4c3627 | 4388 | { |
c0239a0b | 4389 | EMACS_TIME timer_delay; |
c573ae8e | 4390 | |
9baacf76 | 4391 | do |
c573ae8e | 4392 | { |
9baacf76 | 4393 | int old_timers_run = timers_run; |
c88164fe | 4394 | struct buffer *old_buffer = current_buffer; |
177c0ea7 | 4395 | |
9baacf76 | 4396 | timer_delay = timer_check (1); |
a2fab450 GM |
4397 | |
4398 | /* If a timer has run, this might have changed buffers | |
4399 | an alike. Make read_key_sequence aware of that. */ | |
4400 | if (timers_run != old_timers_run | |
c88164fe | 4401 | && old_buffer != current_buffer |
a2fab450 GM |
4402 | && waiting_for_user_input_p == -1) |
4403 | record_asynch_buffer_change (); | |
177c0ea7 | 4404 | |
9baacf76 GM |
4405 | if (timers_run != old_timers_run && do_display) |
4406 | /* We must retry, since a timer may have requeued itself | |
4407 | and that could alter the time_delay. */ | |
3007ebfb | 4408 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4409 | else |
4410 | break; | |
c573ae8e | 4411 | } |
9baacf76 | 4412 | while (!detect_input_pending ()); |
c573ae8e | 4413 | |
69645afc | 4414 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4415 | if (read_kbd != 0 |
69645afc RS |
4416 | && requeued_events_pending_p ()) |
4417 | break; | |
4418 | ||
c0239a0b | 4419 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4420 | { |
4421 | EMACS_TIME difference; | |
4422 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4423 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4424 | { |
4425 | timeout = timer_delay; | |
4426 | timeout_reduced_for_timers = 1; | |
4427 | } | |
fb4c3627 | 4428 | } |
4abca5e7 RS |
4429 | /* If time_limit is -1, we are not going to wait at all. */ |
4430 | else if (time_limit != -1) | |
c573ae8e RS |
4431 | { |
4432 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4433 | wait_reading_process_output_1 (); |
c573ae8e | 4434 | } |
fb4c3627 RS |
4435 | } |
4436 | ||
90ab1a81 JB |
4437 | /* Cause C-g and alarm signals to take immediate action, |
4438 | and cause input available signals to zero out timeout. | |
4439 | ||
4440 | It is important that we do this before checking for process | |
4441 | activity. If we get a SIGCHLD after the explicit checks for | |
4442 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4443 | if (read_kbd < 0) |
90ab1a81 JB |
4444 | set_waiting_for_input (&timeout); |
4445 | ||
6be429b1 JB |
4446 | /* If status of something has changed, and no input is |
4447 | available, notify the user of the change right away. After | |
4448 | this explicit check, we'll let the SIGCHLD handler zap | |
4449 | timeout to get our attention. */ | |
4450 | if (update_tick != process_tick && do_display) | |
4451 | { | |
bad49fc7 KS |
4452 | SELECT_TYPE Atemp; |
4453 | #ifdef NON_BLOCKING_CONNECT | |
4454 | SELECT_TYPE Ctemp; | |
4455 | #endif | |
dd2a17ab | 4456 | |
6be429b1 | 4457 | Atemp = input_wait_mask; |
e082ac9d ST |
4458 | #if 0 |
4459 | /* On Mac OS X 10.0, the SELECT system call always says input is | |
e0f712ba | 4460 | present (for reading) at stdin, even when none is. This |
aa87aafc | 4461 | causes the call to SELECT below to return 1 and |
e0f712ba | 4462 | status_notify not to be called. As a result output of |
39b1da20 | 4463 | subprocesses are incorrectly discarded. |
e082ac9d | 4464 | */ |
e0f712ba AC |
4465 | FD_CLR (0, &Atemp); |
4466 | #endif | |
bad49fc7 KS |
4467 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4468 | ||
6be429b1 | 4469 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
994d9841 NR |
4470 | if ((select (max (max (max_process_desc, max_keyboard_desc), |
4471 | max_gpm_desc) + 1, | |
177c0ea7 | 4472 | &Atemp, |
bad49fc7 | 4473 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4474 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4475 | #else |
4476 | (SELECT_TYPE *)0, | |
4477 | #endif | |
dd2a17ab | 4478 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4479 | <= 0)) |
90ab1a81 JB |
4480 | { |
4481 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4482 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4483 | clear_waiting_for_input (); |
ff6daed3 | 4484 | status_notify (NULL); |
90ab1a81 | 4485 | } |
6be429b1 JB |
4486 | } |
4487 | ||
dd2a17ab KS |
4488 | /* Don't wait for output from a non-running process. Just |
4489 | read whatever data has already been received. */ | |
6bfd98e7 | 4490 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4491 | update_status (wait_proc); |
6bfd98e7 | 4492 | if (wait_proc |
dd2a17ab KS |
4493 | && ! EQ (wait_proc->status, Qrun) |
4494 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4495 | { |
215b45e9 | 4496 | int nread, total_nread = 0; |
7ce63188 | 4497 | |
9aa2a7f4 | 4498 | clear_waiting_for_input (); |
7ce63188 RS |
4499 | XSETPROCESS (proc, wait_proc); |
4500 | ||
4501 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4502 | while (wait_proc->infd >= 0) |
215b45e9 | 4503 | { |
60f0fb11 | 4504 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4505 | |
4506 | if (nread == 0) | |
4507 | break; | |
4508 | ||
177c0ea7 | 4509 | if (0 < nread) |
215b45e9 RS |
4510 | total_nread += nread; |
4511 | #ifdef EIO | |
4512 | else if (nread == -1 && EIO == errno) | |
4513 | break; | |
e1b37c34 GM |
4514 | #endif |
4515 | #ifdef EAGAIN | |
4516 | else if (nread == -1 && EAGAIN == errno) | |
4517 | break; | |
4518 | #endif | |
4519 | #ifdef EWOULDBLOCK | |
4520 | else if (nread == -1 && EWOULDBLOCK == errno) | |
4521 | break; | |
215b45e9 RS |
4522 | #endif |
4523 | } | |
7ce63188 | 4524 | if (total_nread > 0 && do_display) |
3007ebfb | 4525 | redisplay_preserve_echo_area (10); |
7ce63188 | 4526 | |
9aa2a7f4 JB |
4527 | break; |
4528 | } | |
6be429b1 | 4529 | |
d0d6b7c5 JB |
4530 | /* Wait till there is something to do */ |
4531 | ||
b89a415a | 4532 | if (wait_proc && just_wait_proc) |
107ed38d | 4533 | { |
60f0fb11 | 4534 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4535 | break; |
60f0fb11 | 4536 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 KS |
4537 | check_delay = 0; |
4538 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4539 | } |
4540 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4541 | { |
4542 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4543 | check_delay = 0; |
4544 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4545 | } |
a69281ff | 4546 | else |
dd2a17ab | 4547 | { |
b89a415a | 4548 | if (! read_kbd) |
dd2a17ab KS |
4549 | Available = non_keyboard_wait_mask; |
4550 | else | |
4551 | Available = input_wait_mask; | |
bad49fc7 | 4552 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
3af55251 | 4553 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4554 | } |
d0d6b7c5 | 4555 | |
ff11dfa1 | 4556 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4557 | redisplay now, before we start to wait. There is a race |
4558 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4559 | and indicates that a frame is trashed, the select may block |
4560 | displaying a trashed screen. */ | |
5164ee8e | 4561 | if (frame_garbaged && do_display) |
7286affd RS |
4562 | { |
4563 | clear_waiting_for_input (); | |
3007ebfb | 4564 | redisplay_preserve_echo_area (11); |
b89a415a | 4565 | if (read_kbd < 0) |
7efe788e | 4566 | set_waiting_for_input (&timeout); |
7286affd | 4567 | } |
ffd56f97 | 4568 | |
dd2a17ab | 4569 | no_avail = 0; |
b89a415a | 4570 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4571 | { |
4572 | nfds = 0; | |
dd2a17ab | 4573 | no_avail = 1; |
0a65b032 RS |
4574 | } |
4575 | else | |
dd2a17ab | 4576 | { |
bad49fc7 | 4577 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4578 | if (check_connect) |
4579 | Connecting = connect_wait_mask; | |
bad49fc7 | 4580 | #endif |
2d942bfa KS |
4581 | |
4582 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4583 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4584 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4585 | read_output_delay, and we are not reading output for a |
4586 | specific wait_channel. It is not executed if | |
4587 | Vprocess_adaptive_read_buffering is nil. */ | |
2d942bfa KS |
4588 | if (process_output_skip && check_delay > 0) |
4589 | { | |
4590 | int usecs = EMACS_USECS (timeout); | |
4591 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4592 | usecs = READ_OUTPUT_DELAY_MAX; | |
4593 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4594 | { | |
4595 | proc = chan_process[channel]; | |
4596 | if (NILP (proc)) | |
4597 | continue; | |
db853b7a | 4598 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4599 | processes with non-zero read_output_skip. */ |
4600 | if (XPROCESS (proc)->read_output_delay > 0) | |
2d942bfa KS |
4601 | { |
4602 | check_delay--; | |
60f0fb11 | 4603 | if (!XPROCESS (proc)->read_output_skip) |
2d942bfa KS |
4604 | continue; |
4605 | FD_CLR (channel, &Available); | |
60f0fb11 SM |
4606 | XPROCESS (proc)->read_output_skip = 0; |
4607 | if (XPROCESS (proc)->read_output_delay < usecs) | |
4608 | usecs = XPROCESS (proc)->read_output_delay; | |
2d942bfa KS |
4609 | } |
4610 | } | |
4611 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4612 | process_output_skip = 0; | |
4613 | } | |
4614 | #endif | |
4615 | ||
994d9841 NR |
4616 | nfds = select (max (max (max_process_desc, max_keyboard_desc), |
4617 | max_gpm_desc) + 1, | |
177c0ea7 | 4618 | &Available, |
bad49fc7 | 4619 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4620 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4621 | #else |
4622 | (SELECT_TYPE *)0, | |
4623 | #endif | |
dd2a17ab KS |
4624 | (SELECT_TYPE *)0, &timeout); |
4625 | } | |
6720a7fb | 4626 | |
d0d6b7c5 JB |
4627 | xerrno = errno; |
4628 | ||
4629 | /* Make C-g and alarm signals set flags again */ | |
4630 | clear_waiting_for_input (); | |
4631 | ||
4632 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4633 | do_pending_window_change (0); |
d0d6b7c5 | 4634 | |
c0239a0b RS |
4635 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4636 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4637 | break; |
4638 | if (nfds < 0) | |
4639 | { | |
4640 | if (xerrno == EINTR) | |
dd2a17ab | 4641 | no_avail = 1; |
b0310da4 JB |
4642 | #ifdef ultrix |
4643 | /* Ultrix select seems to return ENOMEM when it is | |
4644 | interrupted. Treat it just like EINTR. Bleah. Note | |
4645 | that we want to test for the "ultrix" CPP symbol, not | |
4646 | "__ultrix__"; the latter is only defined under GCC, but | |
4647 | not by DEC's bundled CC. -JimB */ | |
8058415c | 4648 | else if (xerrno == ENOMEM) |
dd2a17ab | 4649 | no_avail = 1; |
8058415c | 4650 | #endif |
d0d6b7c5 JB |
4651 | #ifdef ALLIANT |
4652 | /* This happens for no known reason on ALLIANT. | |
4653 | I am guessing that this is the right response. -- RMS. */ | |
4654 | else if (xerrno == EFAULT) | |
dd2a17ab | 4655 | no_avail = 1; |
d0d6b7c5 JB |
4656 | #endif |
4657 | else if (xerrno == EBADF) | |
4658 | { | |
4659 | #ifdef AIX | |
4660 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4661 | the child's closure of the pts gives the parent a SIGHUP, and | |
4662 | the ptc file descriptor is automatically closed, | |
4663 | yielding EBADF here or at select() call above. | |
4664 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4665 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4666 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4667 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4668 | #else |
4669 | abort (); | |
4670 | #endif | |
4671 | } | |
4672 | else | |
68c45bf0 | 4673 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4674 | } |
dd2a17ab KS |
4675 | |
4676 | if (no_avail) | |
4677 | { | |
4678 | FD_ZERO (&Available); | |
bad49fc7 | 4679 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4680 | } |
4681 | ||
26ec91de | 4682 | #if defined(sun) && !defined(USG5_4) |
dd2a17ab KS |
4683 | if (nfds > 0 && keyboard_bit_set (&Available) |
4684 | && interrupt_input) | |
e0109153 JB |
4685 | /* System sometimes fails to deliver SIGIO. |
4686 | ||
4687 | David J. Mackenzie says that Emacs doesn't compile under | |
4688 | Solaris if this code is enabled, thus the USG5_4 in the CPP | |
4689 | conditional. "I haven't noticed any ill effects so far. | |
4690 | If you find a Solaris expert somewhere, they might know | |
4691 | better." */ | |
d0d6b7c5 JB |
4692 | kill (getpid (), SIGIO); |
4693 | #endif | |
4694 | ||
5d5beb62 RS |
4695 | #if 0 /* When polling is used, interrupt_input is 0, |
4696 | so get_input_pending should read the input. | |
4697 | So this should not be needed. */ | |
4698 | /* If we are using polling for input, | |
4699 | and we see input available, make it get read now. | |
4700 | Otherwise it might not actually get read for a second. | |
214d6069 | 4701 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4702 | it might never get read at all if we don't spend much time |
214d6069 | 4703 | outside of wait_reading_process_output. */ |
b89a415a | 4704 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4705 | && keyboard_bit_set (&Available) |
4706 | && input_polling_used ()) | |
4707 | kill (getpid (), SIGALRM); | |
4708 | #endif | |
4709 | ||
d0d6b7c5 JB |
4710 | /* Check for keyboard input */ |
4711 | /* If there is any, return immediately | |
4712 | to give it higher priority than subprocesses */ | |
4713 | ||
b89a415a | 4714 | if (read_kbd != 0) |
6ed6233b | 4715 | { |
a2fab450 | 4716 | int old_timers_run = timers_run; |
c88164fe | 4717 | struct buffer *old_buffer = current_buffer; |
a2fab450 | 4718 | int leave = 0; |
177c0ea7 | 4719 | |
5d6c2aa3 | 4720 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4721 | { |
4722 | swallow_events (do_display); | |
4723 | if (detect_input_pending_run_timers (do_display)) | |
4724 | leave = 1; | |
4725 | } | |
6ed6233b | 4726 | |
a2fab450 GM |
4727 | /* If a timer has run, this might have changed buffers |
4728 | an alike. Make read_key_sequence aware of that. */ | |
4729 | if (timers_run != old_timers_run | |
c88164fe GM |
4730 | && waiting_for_user_input_p == -1 |
4731 | && old_buffer != current_buffer) | |
a2fab450 GM |
4732 | record_asynch_buffer_change (); |
4733 | ||
4734 | if (leave) | |
4735 | break; | |
177c0ea7 JB |
4736 | } |
4737 | ||
69645afc | 4738 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4739 | if (read_kbd != 0 |
69645afc RS |
4740 | && requeued_events_pending_p ()) |
4741 | break; | |
4742 | ||
77e1b3d4 RS |
4743 | /* If we are not checking for keyboard input now, |
4744 | do process events (but don't run any timers). | |
4745 | This is so that X events will be processed. | |
0c9960e9 | 4746 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4747 | That would causes delays in pasting selections, for example. |
4748 | ||
4749 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4750 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4751 | { |
4752 | swallow_events (do_display); | |
0c9960e9 | 4753 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4754 | if (detect_input_pending ()) |
4755 | break; | |
5d5beb62 | 4756 | #endif |
0c9960e9 | 4757 | } |
f854a00b | 4758 | |
84aa3ace | 4759 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4760 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4761 | break; |
4762 | ||
4746118a | 4763 | #ifdef SIGIO |
5d5beb62 | 4764 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4765 | go read it. This can happen with X on BSD after logging out. |
4766 | In that case, there really is no input and no SIGIO, | |
4767 | but select says there is input. */ | |
4768 | ||
b89a415a | 4769 | if (read_kbd && interrupt_input |
2601f59e | 4770 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4771 | kill (getpid (), SIGIO); |
4746118a | 4772 | #endif |
d0d6b7c5 | 4773 | |
d0d6b7c5 JB |
4774 | if (! wait_proc) |
4775 | got_some_input |= nfds > 0; | |
4776 | ||
32676c08 JB |
4777 | /* If checking input just got us a size-change event from X, |
4778 | obey it now if we should. */ | |
b89a415a | 4779 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4780 | do_pending_window_change (0); |
32676c08 | 4781 | |
a9f2c884 | 4782 | /* Check for data from a process. */ |
dd2a17ab KS |
4783 | if (no_avail || nfds == 0) |
4784 | continue; | |
4785 | ||
a9f2c884 RS |
4786 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4787 | but this is safer in the short run. */ | |
a69281ff | 4788 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4789 | { |
a69281ff RS |
4790 | if (FD_ISSET (channel, &Available) |
4791 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4792 | { |
4793 | int nread; | |
4794 | ||
4795 | /* If waiting for this channel, arrange to return as | |
4796 | soon as no more input to be processed. No more | |
4797 | waiting. */ | |
4798 | if (wait_channel == channel) | |
4799 | { | |
a9f2c884 | 4800 | wait_channel = -1; |
d0d6b7c5 JB |
4801 | time_limit = -1; |
4802 | got_some_input = 1; | |
4803 | } | |
4804 | proc = chan_process[channel]; | |
4805 | if (NILP (proc)) | |
4806 | continue; | |
4807 | ||
e690ca94 KS |
4808 | /* If this is a server stream socket, accept connection. */ |
4809 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4810 | { | |
4811 | server_accept_connection (proc, channel); | |
4812 | continue; | |
4813 | } | |
4814 | ||
d0d6b7c5 JB |
4815 | /* Read data from the process, starting with our |
4816 | buffered-ahead character if we have one. */ | |
4817 | ||
4818 | nread = read_process_output (proc, channel); | |
4819 | if (nread > 0) | |
4820 | { | |
4821 | /* Since read_process_output can run a filter, | |
4822 | which can call accept-process-output, | |
4823 | don't try to read from any other processes | |
4824 | before doing the select again. */ | |
4825 | FD_ZERO (&Available); | |
4826 | ||
4827 | if (do_display) | |
3007ebfb | 4828 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4829 | } |
4830 | #ifdef EWOULDBLOCK | |
4831 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4832 | ; | |
0b75e9a4 | 4833 | #endif |
89d7280d RS |
4834 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4835 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4836 | #ifdef O_NONBLOCK |
4837 | else if (nread == -1 && errno == EAGAIN) | |
4838 | ; | |
4839 | #else | |
4840 | #ifdef O_NDELAY | |
4841 | else if (nread == -1 && errno == EAGAIN) | |
4842 | ; | |
4843 | /* Note that we cannot distinguish between no input | |
4844 | available now and a closed pipe. | |
4845 | With luck, a closed pipe will be accompanied by | |
4846 | subprocess termination and SIGCHLD. */ | |
4847 | else if (nread == 0 && !NETCONN_P (proc)) | |
4848 | ; | |
4740825c KS |
4849 | #endif /* O_NDELAY */ |
4850 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4851 | #ifdef HAVE_PTYS |
4852 | /* On some OSs with ptys, when the process on one end of | |
4853 | a pty exits, the other end gets an error reading with | |
4854 | errno = EIO instead of getting an EOF (0 bytes read). | |
4855 | Therefore, if we get an error reading and errno = | |
4856 | EIO, just continue, because the child process has | |
4857 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4858 | get a SIGCHLD). |
4859 | ||
4860 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4861 | got lost. So raise the signal again just in case. |
5651af6d | 4862 | It can't hurt. */ |
d0d6b7c5 | 4863 | else if (nread == -1 && errno == EIO) |
4740825c KS |
4864 | { |
4865 | /* Clear the descriptor now, so we only raise the signal once. */ | |
4866 | FD_CLR (channel, &input_wait_mask); | |
4867 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4868 | ||
4869 | kill (getpid (), SIGCHLD); | |
4870 | } | |
4871 | #endif /* HAVE_PTYS */ | |
ffd56f97 JB |
4872 | /* If we can detect process termination, don't consider the process |
4873 | gone just because its pipe is closed. */ | |
d0d6b7c5 JB |
4874 | #ifdef SIGCHLD |
4875 | else if (nread == 0 && !NETCONN_P (proc)) | |
4876 | ; | |
4877 | #endif | |
4878 | else | |
4879 | { | |
4880 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4881 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4882 | deactivate_process (proc); |
6bfd98e7 | 4883 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 JB |
4884 | update_status (XPROCESS (proc)); |
4885 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4886 | XPROCESS (proc)->status | |
4887 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4888 | } | |
4889 | } | |
177c0ea7 | 4890 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
4891 | if (check_connect && FD_ISSET (channel, &Connecting) |
4892 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
4893 | { |
4894 | struct Lisp_Process *p; | |
dd2a17ab KS |
4895 | |
4896 | FD_CLR (channel, &connect_wait_mask); | |
4897 | if (--num_pending_connects < 0) | |
4898 | abort (); | |
4899 | ||
4900 | proc = chan_process[channel]; | |
4901 | if (NILP (proc)) | |
4902 | continue; | |
4903 | ||
4904 | p = XPROCESS (proc); | |
4905 | ||
4906 | #ifdef GNU_LINUX | |
4907 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
4908 | So only use it on systems where it is known to work. */ | |
4909 | { | |
e690ca94 | 4910 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
4911 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
4912 | xerrno = errno; | |
4913 | } | |
4914 | #else | |
44c887be PJ |
4915 | { |
4916 | struct sockaddr pname; | |
4917 | int pnamelen = sizeof(pname); | |
4918 | ||
4919 | /* If connection failed, getpeername will fail. */ | |
4920 | xerrno = 0; | |
4921 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
4922 | { | |
4923 | /* Obtain connect failure code through error slippage. */ | |
4924 | char dummy; | |
dd2a17ab | 4925 | xerrno = errno; |
44c887be PJ |
4926 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
4927 | xerrno = errno; | |
4928 | } | |
4929 | } | |
dd2a17ab KS |
4930 | #endif |
4931 | if (xerrno) | |
4932 | { | |
60f0fb11 | 4933 | p->tick = ++process_tick; |
dd2a17ab KS |
4934 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); |
4935 | deactivate_process (proc); | |
4936 | } | |
4937 | else | |
4938 | { | |
4939 | p->status = Qrun; | |
4940 | /* Execute the sentinel here. If we had relied on | |
4941 | status_notify to do it later, it will read input | |
4942 | from the process before calling the sentinel. */ | |
4943 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4944 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 4945 | { |
60f0fb11 SM |
4946 | FD_SET (p->infd, &input_wait_mask); |
4947 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
4948 | } |
4949 | } | |
4950 | } | |
4951 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4952 | } /* end for each file descriptor */ |
4953 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4954 | |
42ec1561 | 4955 | unbind_to (count, Qnil); |
d430ee71 | 4956 | |
ffd56f97 JB |
4957 | /* If calling from keyboard input, do not quit |
4958 | since we want to return C-g as an input character. | |
4959 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4960 | if (read_kbd >= 0) |
ffd56f97 JB |
4961 | { |
4962 | /* Prevent input_pending from remaining set if we quit. */ | |
4963 | clear_input_pending (); | |
4964 | QUIT; | |
4965 | } | |
19310311 | 4966 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4967 | /* AlainF 5-Jul-1996 |
4968 | HP-UX 10.10 seems to have problems with signals coming in | |
4969 | Causes "poll: interrupted system call" messages when Emacs is run | |
4970 | in an X window | |
4971 | Turn periodic alarms back on */ | |
5d5beb62 | 4972 | start_polling (); |
19310311 | 4973 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
efa2a55c | 4974 | |
d0d6b7c5 JB |
4975 | return got_some_input; |
4976 | } | |
4977 | \f | |
3b9a3dfa RS |
4978 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4979 | ||
4980 | static Lisp_Object | |
4981 | read_process_output_call (fun_and_args) | |
4982 | Lisp_Object fun_and_args; | |
4983 | { | |
70949dac | 4984 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4985 | } |
4986 | ||
4987 | static Lisp_Object | |
4988 | read_process_output_error_handler (error) | |
4989 | Lisp_Object error; | |
4990 | { | |
4991 | cmd_error_internal (error, "error in process filter: "); | |
4992 | Vinhibit_quit = Qt; | |
4993 | update_echo_area (); | |
833ba342 | 4994 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4995 | return Qt; |
3b9a3dfa RS |
4996 | } |
4997 | ||
d0d6b7c5 JB |
4998 | /* Read pending output from the process channel, |
4999 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5000 | Yield number of decoded characters read. |
d0d6b7c5 | 5001 | |
116c423c | 5002 | This function reads at most 4096 characters. |
d0d6b7c5 | 5003 | If you want to read all available subprocess output, |
0fa1789e KH |
5004 | you must call it repeatedly until it returns zero. |
5005 | ||
5006 | The characters read are decoded according to PROC's coding-system | |
5007 | for decoding. */ | |
d0d6b7c5 | 5008 | |
ff6daed3 | 5009 | static int |
d0d6b7c5 JB |
5010 | read_process_output (proc, channel) |
5011 | Lisp_Object proc; | |
5012 | register int channel; | |
5013 | { | |
e1283999 | 5014 | register int nbytes; |
d0d6b7c5 | 5015 | char *chars; |
d0d6b7c5 JB |
5016 | register Lisp_Object outstream; |
5017 | register struct buffer *old = current_buffer; | |
5018 | register struct Lisp_Process *p = XPROCESS (proc); | |
5019 | register int opoint; | |
c7580538 | 5020 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5021 | int carryover = p->decoding_carryover; |
116c423c | 5022 | int readmax = 4096; |
d0d6b7c5 JB |
5023 | |
5024 | #ifdef VMS | |
5025 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); | |
5026 | ||
5027 | vs = get_vms_process_pointer (p->pid); | |
5028 | if (vs) | |
5029 | { | |
5030 | if (!vs->iosb[0]) | |
a319f7c1 | 5031 | return (0); /* Really weird if it does this */ |
d0d6b7c5 JB |
5032 | if (!(vs->iosb[0] & 1)) |
5033 | return -1; /* I/O error */ | |
5034 | } | |
5035 | else | |
5036 | error ("Could not get VMS process pointer"); | |
5037 | chars = vs->inputBuffer; | |
1d2fc612 RS |
5038 | nbytes = clean_vms_buffer (chars, vs->iosb[1]); |
5039 | if (nbytes <= 0) | |
d0d6b7c5 JB |
5040 | { |
5041 | start_vms_process_read (vs); /* Crank up the next read on the process */ | |
5042 | return 1; /* Nothing worth printing, say we got 1 */ | |
5043 | } | |
e7fbaa65 | 5044 | if (carryover > 0) |
0fa1789e | 5045 | { |
e7fbaa65 KH |
5046 | /* The data carried over in the previous decoding (which are at |
5047 | the tail of decoding buffer) should be prepended to the new | |
5048 | data read to decode all together. */ | |
ed7a4b2d | 5049 | chars = (char *) alloca (nbytes + carryover); |
d5db4077 | 5050 | bcopy (SDATA (p->decoding_buf), buf, carryover); |
ed7a4b2d | 5051 | bcopy (vs->inputBuffer, chars + carryover, nbytes); |
0fa1789e | 5052 | } |
d0d6b7c5 | 5053 | #else /* not VMS */ |
e690ca94 | 5054 | |
e690ca94 | 5055 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
5056 | if (carryover) |
5057 | /* See the comment above. */ | |
d5db4077 | 5058 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 5059 | |
e690ca94 KS |
5060 | #ifdef DATAGRAM_SOCKETS |
5061 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5062 | if (DATAGRAM_CHAN_P (channel)) | |
5063 | { | |
5064 | int len = datagram_address[channel].len; | |
39b1da20 | 5065 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5066 | 0, datagram_address[channel].sa, &len); |
5067 | } | |
5068 | else | |
5069 | #endif | |
d0d6b7c5 | 5070 | if (proc_buffered_char[channel] < 0) |
2d942bfa | 5071 | { |
39b1da20 | 5072 | nbytes = emacs_read (channel, chars + carryover, readmax); |
2d942bfa | 5073 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5074 | if (nbytes > 0 && p->adaptive_read_buffering) |
2d942bfa | 5075 | { |
60f0fb11 | 5076 | int delay = p->read_output_delay; |
05b72afd | 5077 | if (nbytes < 256) |
2d942bfa KS |
5078 | { |
5079 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5080 | { | |
5081 | if (delay == 0) | |
5082 | process_output_delay_count++; | |
5083 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5084 | } | |
5085 | } | |
39b1da20 | 5086 | else if (delay > 0 && (nbytes == readmax)) |
2d942bfa KS |
5087 | { |
5088 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5089 | if (delay == 0) | |
5090 | process_output_delay_count--; | |
5091 | } | |
60f0fb11 | 5092 | p->read_output_delay = delay; |
2d942bfa KS |
5093 | if (delay) |
5094 | { | |
60f0fb11 | 5095 | p->read_output_skip = 1; |
2d942bfa KS |
5096 | process_output_skip = 1; |
5097 | } | |
5098 | } | |
5099 | #endif | |
5100 | } | |
d0d6b7c5 JB |
5101 | else |
5102 | { | |
ed7a4b2d | 5103 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 5104 | proc_buffered_char[channel] = -1; |
39b1da20 | 5105 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
5106 | if (nbytes < 0) |
5107 | nbytes = 1; | |
d0d6b7c5 | 5108 | else |
1d2fc612 | 5109 | nbytes = nbytes + 1; |
d0d6b7c5 JB |
5110 | } |
5111 | #endif /* not VMS */ | |
5112 | ||
60f0fb11 | 5113 | p->decoding_carryover = 0; |
ca65341e | 5114 | |
ed7a4b2d | 5115 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5116 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5117 | if (nbytes <= 0) |
5118 | { | |
5119 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5120 | return nbytes; | |
5121 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5122 | } | |
d0d6b7c5 | 5123 | |
1d2fc612 | 5124 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5125 | nbytes += carryover; |
0fa1789e | 5126 | |
1d2fc612 | 5127 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
5128 | outstream = p->filter; |
5129 | if (!NILP (outstream)) | |
5130 | { | |
177c0ea7 | 5131 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
5132 | hitting ^G when a filter happens to be running won't screw |
5133 | it up. */ | |
aed13378 | 5134 | int count = SPECPDL_INDEX (); |
30c78175 | 5135 | Lisp_Object odeactivate; |
dfc21838 | 5136 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 5137 | Lisp_Object text; |
4da2f5be | 5138 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5139 | int waiting = waiting_for_user_input_p; |
30c78175 | 5140 | |
dfc21838 RS |
5141 | /* No need to gcpro these, because all we do with them later |
5142 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 5143 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
5144 | XSETBUFFER (obuffer, current_buffer); |
5145 | okeymap = current_buffer->keymap; | |
30c78175 | 5146 | |
d0d6b7c5 | 5147 | specbind (Qinhibit_quit, Qt); |
6545aada | 5148 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5149 | |
4da2f5be RS |
5150 | /* In case we get recursively called, |
5151 | and we already saved the match data nonrecursively, | |
5152 | save the same match data in safely recursive fashion. */ | |
5153 | if (outer_running_asynch_code) | |
5154 | { | |
5155 | Lisp_Object tem; | |
5156 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5157 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5158 | restore_search_regs (); | |
5159 | record_unwind_save_match_data (); | |
5160 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5161 | } |
5162 | ||
5163 | /* For speed, if a search happens within this code, | |
5164 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5165 | running_asynch_code = 1; |
4da2f5be | 5166 | |
ed7a4b2d KH |
5167 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
5168 | coding, 0); | |
082a1df2 | 5169 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
5170 | /* A new coding system might be found. */ |
5171 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
5172 | { | |
5173 | p->decode_coding_system = coding->symbol; | |
5174 | ||
5175 | /* Don't call setup_coding_system for | |
5176 | proc_decode_coding_system[channel] here. It is done in | |
5177 | detect_coding called via decode_coding above. */ | |
5178 | ||
5179 | /* If a coding system for encoding is not yet decided, we set | |
5180 | it as the same as coding-system for decoding. | |
5181 | ||
5182 | But, before doing that we must check if | |
5183 | proc_encode_coding_system[p->outfd] surely points to a | |
5184 | valid memory because p->outfd will be changed once EOF is | |
5185 | sent to the process. */ | |
5186 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5187 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d KH |
5188 | { |
5189 | p->encode_coding_system = coding->symbol; | |
5190 | setup_coding_system (coding->symbol, | |
60f0fb11 SM |
5191 | proc_encode_coding_system[p->outfd]); |
5192 | if (proc_encode_coding_system[p->outfd]->eol_type | |
6b62b48d | 5193 | == CODING_EOL_UNDECIDED) |
60f0fb11 | 5194 | proc_encode_coding_system[p->outfd]->eol_type |
6b62b48d | 5195 | = system_eol_type; |
ed7a4b2d KH |
5196 | } |
5197 | } | |
51c6067d | 5198 | |
ed7a4b2d | 5199 | carryover = nbytes - coding->consumed; |
d19c0a1c KS |
5200 | if (carryover < 0) |
5201 | abort (); | |
5202 | ||
d7d2483a KS |
5203 | if (SCHARS (p->decoding_buf) < carryover) |
5204 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 5205 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d | 5206 | carryover); |
60f0fb11 | 5207 | p->decoding_carryover = carryover; |
03f04413 | 5208 | /* Adjust the multibyteness of TEXT to that of the filter. */ |
e6fca843 | 5209 | if (!p->filter_multibyte != !STRING_MULTIBYTE (text)) |
03f04413 KH |
5210 | text = (STRING_MULTIBYTE (text) |
5211 | ? Fstring_as_unibyte (text) | |
5212 | : Fstring_to_multibyte (text)); | |
e430e5ba | 5213 | if (SBYTES (text) > 0) |
dd97db06 KH |
5214 | internal_condition_case_1 (read_process_output_call, |
5215 | Fcons (outstream, | |
5216 | Fcons (proc, Fcons (text, Qnil))), | |
5217 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5218 | read_process_output_error_handler); | |
4da2f5be RS |
5219 | |
5220 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5221 | restore_search_regs (); |
4da2f5be | 5222 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5223 | |
592ce97f | 5224 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5225 | Vdeactivate_mark = odeactivate; |
5226 | ||
bbce7d72 RS |
5227 | /* Restore waiting_for_user_input_p as it was |
5228 | when we were called, in case the filter clobbered it. */ | |
5229 | waiting_for_user_input_p = waiting; | |
5230 | ||
7973cfa8 RS |
5231 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5232 | because we might have changed minor modes or other things | |
5233 | that affect key bindings. */ | |
dfc21838 RS |
5234 | if (! EQ (Fcurrent_buffer (), obuffer) |
5235 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5236 | #endif |
927e08be RS |
5237 | /* But do it only if the caller is actually going to read events. |
5238 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5239 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5240 | if (waiting_for_user_input_p == -1) |
5241 | record_asynch_buffer_change (); | |
d72534ba | 5242 | |
d0d6b7c5 JB |
5243 | #ifdef VMS |
5244 | start_vms_process_read (vs); | |
5245 | #endif | |
2ea6d561 | 5246 | unbind_to (count, Qnil); |
e430e5ba | 5247 | return nbytes; |
d0d6b7c5 JB |
5248 | } |
5249 | ||
5250 | /* If no filter, write into buffer if it isn't dead. */ | |
5251 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
5252 | { | |
b0310da4 | 5253 | Lisp_Object old_read_only; |
12ca5cdf | 5254 | int old_begv, old_zv; |
d8a2934e | 5255 | int old_begv_byte, old_zv_byte; |
30c78175 | 5256 | Lisp_Object odeactivate; |
d8a2934e RS |
5257 | int before, before_byte; |
5258 | int opoint_byte; | |
ed7a4b2d | 5259 | Lisp_Object text; |
926b7e5e | 5260 | struct buffer *b; |
30c78175 RS |
5261 | |
5262 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 JB |
5263 | |
5264 | Fset_buffer (p->buffer); | |
6ec8bbd2 | 5265 | opoint = PT; |
d8a2934e | 5266 | opoint_byte = PT_BYTE; |
b0310da4 | 5267 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
5268 | old_begv = BEGV; |
5269 | old_zv = ZV; | |
d8a2934e RS |
5270 | old_begv_byte = BEGV_BYTE; |
5271 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
5272 | |
5273 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
5274 | |
5275 | /* Insert new output into buffer | |
5276 | at the current end-of-output marker, | |
5277 | thus preserving logical ordering of input and output. */ | |
5278 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5279 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5280 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5281 | ZV_BYTE)); | |
d0d6b7c5 | 5282 | else |
d8a2934e | 5283 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5284 | before = PT; |
d8a2934e | 5285 | before_byte = PT_BYTE; |
b0310da4 JB |
5286 | |
5287 | /* If the output marker is outside of the visible region, save | |
5288 | the restriction and widen. */ | |
6ec8bbd2 | 5289 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5290 | Fwiden (); |
5291 | ||
ed7a4b2d KH |
5292 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
5293 | coding, 0); | |
082a1df2 | 5294 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
5295 | /* A new coding system might be found. See the comment in the |
5296 | similar code in the previous `if' block. */ | |
5297 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
5298 | { | |
5299 | p->decode_coding_system = coding->symbol; | |
5300 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5301 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d KH |
5302 | { |
5303 | p->encode_coding_system = coding->symbol; | |
5304 | setup_coding_system (coding->symbol, | |
60f0fb11 SM |
5305 | proc_encode_coding_system[p->outfd]); |
5306 | if (proc_encode_coding_system[p->outfd]->eol_type | |
6b62b48d | 5307 | == CODING_EOL_UNDECIDED) |
60f0fb11 | 5308 | proc_encode_coding_system[p->outfd]->eol_type |
6b62b48d | 5309 | = system_eol_type; |
ed7a4b2d KH |
5310 | } |
5311 | } | |
5312 | carryover = nbytes - coding->consumed; | |
d19c0a1c KS |
5313 | if (carryover < 0) |
5314 | abort (); | |
5315 | ||
d7d2483a KS |
5316 | if (SCHARS (p->decoding_buf) < carryover) |
5317 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 5318 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d | 5319 | carryover); |
60f0fb11 | 5320 | p->decoding_carryover = carryover; |
d19c0a1c | 5321 | |
d69864bf KH |
5322 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5323 | if (NILP (current_buffer->enable_multibyte_characters) | |
5324 | != ! STRING_MULTIBYTE (text)) | |
5325 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5326 | ? Fstring_as_unibyte (text) |
03f04413 | 5327 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5328 | /* Insert before markers in case we are inserting where |
5329 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5330 | insert_from_string_before_markers (text, 0, 0, |
5331 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5332 | |
926b7e5e GM |
5333 | /* Make sure the process marker's position is valid when the |
5334 | process buffer is changed in the signal_after_change above. | |
5335 | W3 is known to do that. */ | |
5336 | if (BUFFERP (p->buffer) | |
5337 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5338 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5339 | else | |
5340 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5341 | |
d0d6b7c5 JB |
5342 | update_mode_lines++; |
5343 | ||
12ca5cdf RS |
5344 | /* Make sure opoint and the old restrictions |
5345 | float ahead of any new text just as point would. */ | |
5346 | if (opoint >= before) | |
d8a2934e RS |
5347 | { |
5348 | opoint += PT - before; | |
5349 | opoint_byte += PT_BYTE - before_byte; | |
5350 | } | |
12ca5cdf | 5351 | if (old_begv > before) |
d8a2934e RS |
5352 | { |
5353 | old_begv += PT - before; | |
5354 | old_begv_byte += PT_BYTE - before_byte; | |
5355 | } | |
12ca5cdf | 5356 | if (old_zv >= before) |
d8a2934e RS |
5357 | { |
5358 | old_zv += PT - before; | |
5359 | old_zv_byte += PT_BYTE - before_byte; | |
5360 | } | |
12ca5cdf | 5361 | |
b0310da4 | 5362 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5363 | if (old_begv != BEGV || old_zv != ZV) |
5364 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5365 | |
592ce97f | 5366 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5367 | Vdeactivate_mark = odeactivate; |
5368 | ||
b0310da4 | 5369 | current_buffer->read_only = old_read_only; |
d8a2934e | 5370 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 JB |
5371 | set_buffer_internal (old); |
5372 | } | |
5373 | #ifdef VMS | |
5374 | start_vms_process_read (vs); | |
5375 | #endif | |
1d2fc612 | 5376 | return nbytes; |
d0d6b7c5 JB |
5377 | } |
5378 | ||
5379 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
5380 | 0, 0, 0, | |
f3d9532b | 5381 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
fdb82f93 PJ |
5382 | This is intended for use by asynchronous process output filters and sentinels. */) |
5383 | () | |
d0d6b7c5 | 5384 | { |
8b4d685f | 5385 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
5386 | } |
5387 | \f | |
5388 | /* Sending data to subprocess */ | |
5389 | ||
5390 | jmp_buf send_process_frame; | |
0daad115 | 5391 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5392 | |
5393 | SIGTYPE | |
5394 | send_process_trap () | |
5395 | { | |
333f1b6f | 5396 | SIGNAL_THREAD_CHECK (SIGPIPE); |
d0d6b7c5 JB |
5397 | #ifdef BSD4_1 |
5398 | sigrelse (SIGPIPE); | |
5399 | sigrelse (SIGALRM); | |
5400 | #endif /* BSD4_1 */ | |
c8f44005 | 5401 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5402 | longjmp (send_process_frame, 1); |
5403 | } | |
5404 | ||
4556b700 RS |
5405 | /* Send some data to process PROC. |
5406 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5407 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5408 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5409 | |
a92e4183 KH |
5410 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5411 | for encoding before it is sent. | |
1fb0098c GM |
5412 | |
5413 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5414 | |
ff6daed3 | 5415 | static void |
4556b700 | 5416 | send_process (proc, buf, len, object) |
ecd1f654 | 5417 | volatile Lisp_Object proc; |
0daad115 GM |
5418 | unsigned char *volatile buf; |
5419 | volatile int len; | |
5420 | volatile Lisp_Object object; | |
d0d6b7c5 | 5421 | { |
ecd1f654 | 5422 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
2d942bfa | 5423 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5424 | int rv; |
0fa1789e | 5425 | struct coding_system *coding; |
6044e593 | 5426 | struct gcpro gcpro1; |
41c4895c | 5427 | SIGTYPE (*volatile old_sigpipe) (); |
6044e593 RS |
5428 | |
5429 | GCPRO1 (object); | |
d0d6b7c5 | 5430 | |
d0d6b7c5 | 5431 | #ifdef VMS |
d0d6b7c5 JB |
5432 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); |
5433 | #endif /* VMS */ | |
5434 | ||
6bfd98e7 | 5435 | if (p->raw_status_new) |
2d942bfa KS |
5436 | update_status (p); |
5437 | if (! EQ (p->status, Qrun)) | |
5438 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5439 | if (p->outfd < 0) |
2d942bfa | 5440 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5441 | |
60f0fb11 | 5442 | coding = proc_encode_coding_system[p->outfd]; |
486b111b KH |
5443 | Vlast_coding_system_used = coding->symbol; |
5444 | ||
ed7a4b2d KH |
5445 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5446 | || (BUFFERP (object) | |
a92e4183 KH |
5447 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5448 | || EQ (object, Qt)) | |
278bfdd6 | 5449 | { |
2d942bfa | 5450 | if (!EQ (coding->symbol, p->encode_coding_system)) |
278bfdd6 KH |
5451 | /* The coding system for encoding was changed to raw-text |
5452 | because we sent a unibyte text previously. Now we are | |
5453 | sending a multibyte text, thus we must encode it by the | |
2d942bfa KS |
5454 | original coding system specified for the current process. */ |
5455 | setup_coding_system (p->encode_coding_system, coding); | |
6b62b48d KH |
5456 | if (coding->eol_type == CODING_EOL_UNDECIDED) |
5457 | coding->eol_type = system_eol_type; | |
fbb70ad9 EZ |
5458 | /* src_multibyte should be set to 1 _after_ a call to |
5459 | setup_coding_system, since it resets src_multibyte to | |
5460 | zero. */ | |
5461 | coding->src_multibyte = 1; | |
278bfdd6 KH |
5462 | } |
5463 | else | |
5464 | { | |
a92e4183 KH |
5465 | /* For sending a unibyte text, character code conversion should |
5466 | not take place but EOL conversion should. So, setup raw-text | |
5467 | or one of the subsidiary if we have not yet done it. */ | |
5468 | if (coding->type != coding_type_raw_text) | |
5469 | { | |
5470 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5471 | { | |
5472 | /* But, before changing the coding, we must flush out data. */ | |
5473 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5474 | send_process (proc, "", 0, Qt); | |
5475 | } | |
5476 | coding->src_multibyte = 0; | |
5477 | setup_raw_text_coding_system (coding); | |
5478 | } | |
278bfdd6 | 5479 | } |
a4a37e65 KH |
5480 | coding->dst_multibyte = 0; |
5481 | ||
ed7a4b2d | 5482 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e KH |
5483 | { |
5484 | int require = encoding_buffer_size (coding, len); | |
0daad115 | 5485 | int from_byte = -1, from = -1, to = -1; |
0fa1789e | 5486 | |
ed7a4b2d | 5487 | if (BUFFERP (object)) |
0fa1789e | 5488 | { |
ed7a4b2d KH |
5489 | from_byte = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5490 | from = buf_bytepos_to_charpos (XBUFFER (object), from_byte); | |
5491 | to = buf_bytepos_to_charpos (XBUFFER (object), from_byte + len); | |
5492 | } | |
5493 | else if (STRINGP (object)) | |
5494 | { | |
d5db4077 | 5495 | from_byte = buf - SDATA (object); |
ed7a4b2d KH |
5496 | from = string_byte_to_char (object, from_byte); |
5497 | to = string_byte_to_char (object, from_byte + len); | |
0fa1789e KH |
5498 | } |
5499 | ||
452294c2 GM |
5500 | if (coding->composing != COMPOSITION_DISABLED) |
5501 | { | |
5502 | if (from_byte >= 0) | |
5503 | coding_save_composition (coding, from, to, object); | |
5504 | else | |
5505 | coding->composing = COMPOSITION_DISABLED; | |
5506 | } | |
ed7a4b2d | 5507 | |
2d942bfa KS |
5508 | if (SBYTES (p->encoding_buf) < require) |
5509 | p->encoding_buf = make_uninit_string (require); | |
ed7a4b2d KH |
5510 | |
5511 | if (from_byte >= 0) | |
5512 | buf = (BUFFERP (object) | |
5513 | ? BUF_BYTE_ADDRESS (XBUFFER (object), from_byte) | |
d5db4077 | 5514 | : SDATA (object) + from_byte); |
0fa1789e | 5515 | |
2d942bfa | 5516 | object = p->encoding_buf; |
d5db4077 KR |
5517 | encode_coding (coding, (char *) buf, SDATA (object), |
5518 | len, SBYTES (object)); | |
9de36315 | 5519 | coding_free_composition_data (coding); |
e7fbaa65 | 5520 | len = coding->produced; |
d5db4077 | 5521 | buf = SDATA (object); |
0fa1789e | 5522 | } |
d0d6b7c5 JB |
5523 | |
5524 | #ifdef VMS | |
5525 | vs = get_vms_process_pointer (p->pid); | |
5526 | if (vs == 0) | |
5527 | error ("Could not find this process: %x", p->pid); | |
5528 | else if (write_to_vms_process (vs, buf, len)) | |
5529 | ; | |
0daad115 | 5530 | #else /* not VMS */ |
4556b700 RS |
5531 | |
5532 | if (pty_max_bytes == 0) | |
5533 | { | |
5534 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5535 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5536 | if (pty_max_bytes < 0) |
5537 | pty_max_bytes = 250; | |
5538 | #else | |
5539 | pty_max_bytes = 250; | |
5540 | #endif | |
5541 | /* Deduct one, to leave space for the eof. */ | |
5542 | pty_max_bytes--; | |
5543 | } | |
5544 | ||
0daad115 GM |
5545 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5546 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5547 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5548 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5549 | { |
5550 | process_sent_to = proc; | |
5551 | while (len > 0) | |
5552 | { | |
5553 | int this = len; | |
93b4f699 | 5554 | |
0daad115 GM |
5555 | /* Decide how much data we can send in one batch. |
5556 | Long lines need to be split into multiple batches. */ | |
60f0fb11 | 5557 | if (p->pty_flag) |
0daad115 | 5558 | { |
c0ec53ad SM |
5559 | /* Starting this at zero is always correct when not the first |
5560 | iteration because the previous iteration ended by sending C-d. | |
0daad115 GM |
5561 | It may not be correct for the first iteration |
5562 | if a partial line was sent in a separate send_process call. | |
5563 | If that proves worth handling, we need to save linepos | |
5564 | in the process object. */ | |
5565 | int linepos = 0; | |
5566 | unsigned char *ptr = (unsigned char *) buf; | |
5567 | unsigned char *end = (unsigned char *) buf + len; | |
5568 | ||
5569 | /* Scan through this text for a line that is too long. */ | |
5570 | while (ptr != end && linepos < pty_max_bytes) | |
5571 | { | |
5572 | if (*ptr == '\n') | |
5573 | linepos = 0; | |
5574 | else | |
5575 | linepos++; | |
5576 | ptr++; | |
5577 | } | |
5578 | /* If we found one, break the line there | |
5579 | and put in a C-d to force the buffer through. */ | |
5580 | this = ptr - buf; | |
5581 | } | |
93b4f699 | 5582 | |
0daad115 GM |
5583 | /* Send this batch, using one or more write calls. */ |
5584 | while (this > 0) | |
5585 | { | |
60f0fb11 | 5586 | int outfd = p->outfd; |
0daad115 | 5587 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5588 | #ifdef DATAGRAM_SOCKETS |
5589 | if (DATAGRAM_CHAN_P (outfd)) | |
5590 | { | |
5591 | rv = sendto (outfd, (char *) buf, this, | |
5592 | 0, datagram_address[outfd].sa, | |
5593 | datagram_address[outfd].len); | |
5594 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5595 | { |
5596 | signal (SIGPIPE, old_sigpipe); | |
5597 | report_file_error ("sending datagram", | |
5598 | Fcons (proc, Qnil)); | |
5599 | } | |
e690ca94 KS |
5600 | } |
5601 | else | |
5602 | #endif | |
2d942bfa KS |
5603 | { |
5604 | rv = emacs_write (outfd, (char *) buf, this); | |
5605 | #ifdef ADAPTIVE_READ_BUFFERING | |
60f0fb11 SM |
5606 | if (p->read_output_delay > 0 |
5607 | && p->adaptive_read_buffering == 1) | |
2d942bfa | 5608 | { |
60f0fb11 | 5609 | p->read_output_delay = 0; |
2d942bfa | 5610 | process_output_delay_count--; |
60f0fb11 | 5611 | p->read_output_skip = 0; |
2d942bfa KS |
5612 | } |
5613 | #endif | |
5614 | } | |
0daad115 | 5615 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5616 | |
0daad115 GM |
5617 | if (rv < 0) |
5618 | { | |
5619 | if (0 | |
d0d6b7c5 | 5620 | #ifdef EWOULDBLOCK |
0daad115 | 5621 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5622 | #endif |
5623 | #ifdef EAGAIN | |
0daad115 | 5624 | || errno == EAGAIN |
d0d6b7c5 | 5625 | #endif |
0daad115 | 5626 | ) |
177c0ea7 | 5627 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5628 | that may allow the program |
5629 | to finish doing output and read more. */ | |
5630 | { | |
0daad115 | 5631 | int offset = 0; |
4556b700 | 5632 | |
3433b6bd | 5633 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5634 | /* A gross hack to work around a bug in FreeBSD. |
5635 | In the following sequence, read(2) returns | |
5636 | bogus data: | |
5637 | ||
5638 | write(2) 1022 bytes | |
5639 | write(2) 954 bytes, get EAGAIN | |
5640 | read(2) 1024 bytes in process_read_output | |
5641 | read(2) 11 bytes in process_read_output | |
5642 | ||
5643 | That is, read(2) returns more bytes than have | |
5644 | ever been written successfully. The 1033 bytes | |
5645 | read are the 1022 bytes written successfully | |
5646 | after processing (for example with CRs added if | |
5647 | the terminal is set up that way which it is | |
5648 | here). The same bytes will be seen again in a | |
5649 | later read(2), without the CRs. */ | |
177c0ea7 | 5650 | |
0daad115 GM |
5651 | if (errno == EAGAIN) |
5652 | { | |
5653 | int flags = FWRITE; | |
60f0fb11 | 5654 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5655 | } |
3433b6bd | 5656 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5657 | |
0daad115 GM |
5658 | /* Running filters might relocate buffers or strings. |
5659 | Arrange to relocate BUF. */ | |
5660 | if (BUFFERP (object)) | |
5661 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); | |
5662 | else if (STRINGP (object)) | |
d5db4077 | 5663 | offset = buf - SDATA (object); |
0daad115 | 5664 | |
f3e6605c | 5665 | #ifdef EMACS_HAS_USECS |
214d6069 | 5666 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5667 | #else |
214d6069 | 5668 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5669 | #endif |
4556b700 | 5670 | |
0daad115 GM |
5671 | if (BUFFERP (object)) |
5672 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); | |
5673 | else if (STRINGP (object)) | |
d5db4077 | 5674 | buf = offset + SDATA (object); |
4556b700 | 5675 | |
0daad115 GM |
5676 | rv = 0; |
5677 | } | |
5678 | else | |
5679 | /* This is a real error. */ | |
5680 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5681 | } | |
5682 | buf += rv; | |
5683 | len -= rv; | |
5684 | this -= rv; | |
5685 | } | |
f76475ad | 5686 | |
0daad115 GM |
5687 | /* If we sent just part of the string, put in an EOF |
5688 | to force it through, before we send the rest. */ | |
5689 | if (len > 0) | |
5690 | Fprocess_send_eof (proc); | |
5691 | } | |
5692 | } | |
5693 | #endif /* not VMS */ | |
d0d6b7c5 JB |
5694 | else |
5695 | { | |
0ff69270 | 5696 | signal (SIGPIPE, old_sigpipe); |
0daad115 GM |
5697 | #ifndef VMS |
5698 | proc = process_sent_to; | |
2d942bfa | 5699 | p = XPROCESS (proc); |
0daad115 | 5700 | #endif |
6bfd98e7 | 5701 | p->raw_status_new = 0; |
2d942bfa | 5702 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); |
60f0fb11 | 5703 | p->tick = ++process_tick; |
d0d6b7c5 JB |
5704 | deactivate_process (proc); |
5705 | #ifdef VMS | |
2d942bfa | 5706 | error ("Error writing to process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5707 | #else |
2d942bfa | 5708 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5709 | #endif |
5710 | } | |
6044e593 RS |
5711 | |
5712 | UNGCPRO; | |
d0d6b7c5 JB |
5713 | } |
5714 | ||
8d4e7254 KH |
5715 | static Lisp_Object |
5716 | send_process_object_unwind (buf) | |
5717 | Lisp_Object buf; | |
5718 | { | |
5719 | Lisp_Object tembuf; | |
5720 | ||
5721 | if (XBUFFER (buf) == current_buffer) | |
5722 | return Qnil; | |
5723 | tembuf = Fcurrent_buffer (); | |
5724 | Fset_buffer (buf); | |
5725 | Fkill_buffer (tembuf); | |
5726 | return Qnil; | |
5727 | } | |
5728 | ||
5729 | /* Send current contents of region between START and END to PROC. | |
5730 | If START is a string, send it instead. | |
5731 | This function can evaluate Lisp code and can garbage collect. */ | |
5732 | ||
5733 | static void | |
5734 | send_process_object (proc, start, end) | |
5735 | Lisp_Object proc, start, end; | |
5736 | { | |
5737 | int count = SPECPDL_INDEX (); | |
5738 | Lisp_Object object = STRINGP (start) ? start : Fcurrent_buffer (); | |
5739 | struct buffer *given_buffer = current_buffer; | |
5740 | unsigned char *buf; | |
5741 | int len; | |
5742 | ||
5743 | record_unwind_protect (send_process_object_unwind, Fcurrent_buffer ()); | |
5744 | ||
5745 | if (STRINGP (object) ? STRING_MULTIBYTE (object) | |
5746 | : ! NILP (XBUFFER (object)->enable_multibyte_characters)) | |
5747 | { | |
5748 | struct Lisp_Process *p = XPROCESS (proc); | |
faa6ce91 | 5749 | struct coding_system *coding; |
8d4e7254 | 5750 | |
faa6ce91 KH |
5751 | if (p->raw_status_new) |
5752 | update_status (p); | |
5753 | if (! EQ (p->status, Qrun)) | |
5754 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5755 | if (p->outfd < 0) |
faa6ce91 KH |
5756 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
5757 | ||
60f0fb11 | 5758 | coding = proc_encode_coding_system[p->outfd]; |
8d4e7254 KH |
5759 | if (! EQ (coding->symbol, p->encode_coding_system)) |
5760 | /* The coding system for encoding was changed to raw-text | |
5761 | because we sent a unibyte text previously. Now we are | |
5762 | sending a multibyte text, thus we must encode it by the | |
5763 | original coding system specified for the current process. */ | |
5764 | setup_coding_system (p->encode_coding_system, coding); | |
5765 | if (! NILP (coding->pre_write_conversion)) | |
5766 | { | |
5767 | struct gcpro gcpro1, gcpro2; | |
5768 | ||
5769 | GCPRO2 (proc, object); | |
5770 | call2 (coding->pre_write_conversion, start, end); | |
5771 | UNGCPRO; | |
5772 | if (given_buffer != current_buffer) | |
5773 | { | |
5774 | start = make_number (BEGV), end = make_number (ZV); | |
5775 | object = Fcurrent_buffer (); | |
5776 | } | |
5777 | } | |
5778 | } | |
5779 | ||
5780 | if (BUFFERP (object)) | |
5781 | { | |
5782 | EMACS_INT start_byte; | |
5783 | ||
5784 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5785 | move_gap (XINT (end)); | |
5786 | start_byte = CHAR_TO_BYTE (XINT (start)); | |
5787 | buf = BYTE_POS_ADDR (start_byte); | |
5788 | len = CHAR_TO_BYTE (XINT (end)) - start_byte; | |
5789 | } | |
5790 | else | |
5791 | { | |
5792 | buf = SDATA (object); | |
5793 | len = SBYTES (object); | |
5794 | } | |
5795 | send_process (proc, buf, len, object); | |
5796 | ||
5797 | unbind_to (count, Qnil); | |
5798 | } | |
5799 | ||
d0d6b7c5 | 5800 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, |
fdb82f93 PJ |
5801 | 3, 3, 0, |
5802 | doc: /* Send current contents of region as input to PROCESS. | |
5803 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5804 | nil, indicating the current buffer's process. | |
5805 | Called from program, takes three arguments, PROCESS, START and END. | |
5806 | If the region is more than 500 characters long, | |
5807 | it is sent in several bunches. This may happen even for shorter regions. | |
5808 | Output from processes can arrive in between bunches. */) | |
5809 | (process, start, end) | |
d0d6b7c5 JB |
5810 | Lisp_Object process, start, end; |
5811 | { | |
5812 | Lisp_Object proc; | |
d0d6b7c5 JB |
5813 | |
5814 | proc = get_process (process); | |
5815 | validate_region (&start, &end); | |
8d4e7254 | 5816 | send_process_object (proc, start, end); |
d0d6b7c5 JB |
5817 | return Qnil; |
5818 | } | |
5819 | ||
5820 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5821 | 2, 2, 0, |
5822 | doc: /* Send PROCESS the contents of STRING as input. | |
5823 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5824 | nil, indicating the current buffer's process. | |
5825 | If STRING is more than 500 characters long, | |
5826 | it is sent in several bunches. This may happen even for shorter strings. | |
5827 | Output from processes can arrive in between bunches. */) | |
5828 | (process, string) | |
d0d6b7c5 JB |
5829 | Lisp_Object process, string; |
5830 | { | |
5831 | Lisp_Object proc; | |
b7826503 | 5832 | CHECK_STRING (string); |
d0d6b7c5 | 5833 | proc = get_process (process); |
8d4e7254 | 5834 | send_process_object (proc, string, Qnil); |
d0d6b7c5 JB |
5835 | return Qnil; |
5836 | } | |
5837 | \f | |
16782258 JD |
5838 | /* Return the foreground process group for the tty/pty that |
5839 | the process P uses. */ | |
5840 | static int | |
5841 | emacs_get_tty_pgrp (p) | |
5842 | struct Lisp_Process *p; | |
5843 | { | |
5844 | int gid = -1; | |
5845 | ||
f3d9532b | 5846 | #ifdef TIOCGPGRP |
60f0fb11 | 5847 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5848 | { |
5849 | int fd; | |
5850 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5851 | master side. Try the slave side. */ | |
5852 | fd = emacs_open (XSTRING (p->tty_name)->data, O_RDONLY, 0); | |
5853 | ||
5854 | if (fd != -1) | |
5855 | { | |
5856 | ioctl (fd, TIOCGPGRP, &gid); | |
5857 | emacs_close (fd); | |
5858 | } | |
5859 | } | |
5860 | #endif /* defined (TIOCGPGRP ) */ | |
5861 | ||
5862 | return gid; | |
5863 | } | |
5864 | ||
b81ea5ef RS |
5865 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5866 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5867 | doc: /* Return t if PROCESS has given the terminal to a child. |
5868 | If the operating system does not make it possible to find out, | |
5869 | return t unconditionally. */) | |
5870 | (process) | |
b81ea5ef RS |
5871 | Lisp_Object process; |
5872 | { | |
5873 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5874 | in a way that will cause returning t. */ | |
16782258 | 5875 | int gid; |
b81ea5ef RS |
5876 | Lisp_Object proc; |
5877 | struct Lisp_Process *p; | |
5878 | ||
5879 | proc = get_process (process); | |
5880 | p = XPROCESS (proc); | |
5881 | ||
5882 | if (!EQ (p->childp, Qt)) | |
5883 | error ("Process %s is not a subprocess", | |
d5db4077 | 5884 | SDATA (p->name)); |
60f0fb11 | 5885 | if (p->infd < 0) |
b81ea5ef | 5886 | error ("Process %s is not active", |
d5db4077 | 5887 | SDATA (p->name)); |
b81ea5ef | 5888 | |
16782258 | 5889 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5890 | |
6bfd98e7 | 5891 | if (gid == p->pid) |
b81ea5ef RS |
5892 | return Qnil; |
5893 | return Qt; | |
5894 | } | |
5895 | \f | |
d0d6b7c5 | 5896 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5897 | If CURRENT_GROUP is t, that means send to the process group |
5898 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5899 | This is used for various commands in shell mode. |
b81ea5ef RS |
5900 | If CURRENT_GROUP is lambda, that means send to the process group |
5901 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5902 | ||
d0d6b7c5 | 5903 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5904 | right away. |
5905 | ||
5906 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5907 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5908 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5909 | |
f9738840 | 5910 | static void |
d0d6b7c5 JB |
5911 | process_send_signal (process, signo, current_group, nomsg) |
5912 | Lisp_Object process; | |
5913 | int signo; | |
5914 | Lisp_Object current_group; | |
5915 | int nomsg; | |
5916 | { | |
5917 | Lisp_Object proc; | |
5918 | register struct Lisp_Process *p; | |
5919 | int gid; | |
5920 | int no_pgrp = 0; | |
5921 | ||
5922 | proc = get_process (process); | |
5923 | p = XPROCESS (proc); | |
5924 | ||
5925 | if (!EQ (p->childp, Qt)) | |
5926 | error ("Process %s is not a subprocess", | |
d5db4077 | 5927 | SDATA (p->name)); |
60f0fb11 | 5928 | if (p->infd < 0) |
d0d6b7c5 | 5929 | error ("Process %s is not active", |
d5db4077 | 5930 | SDATA (p->name)); |
d0d6b7c5 | 5931 | |
60f0fb11 | 5932 | if (!p->pty_flag) |
d0d6b7c5 JB |
5933 | current_group = Qnil; |
5934 | ||
d0d6b7c5 | 5935 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5936 | if (NILP (current_group)) |
5937 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5938 | gid = p->pid; |
2af70a0c | 5939 | else |
d0d6b7c5 | 5940 | { |
b0310da4 | 5941 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5942 | /* If possible, send signals to the entire pgrp |
5943 | by sending an input character to it. */ | |
b0310da4 | 5944 | |
6be429b1 JB |
5945 | /* TERMIOS is the latest and bestest, and seems most likely to |
5946 | work. If the system has it, use it. */ | |
5947 | #ifdef HAVE_TERMIOS | |
5948 | struct termios t; | |
7f916a36 RS |
5949 | cc_t *sig_char = NULL; |
5950 | ||
60f0fb11 | 5951 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5952 | |
5953 | switch (signo) | |
5954 | { | |
5955 | case SIGINT: | |
7f916a36 RS |
5956 | sig_char = &t.c_cc[VINTR]; |
5957 | break; | |
6be429b1 JB |
5958 | |
5959 | case SIGQUIT: | |
7f916a36 RS |
5960 | sig_char = &t.c_cc[VQUIT]; |
5961 | break; | |
6be429b1 JB |
5962 | |
5963 | case SIGTSTP: | |
d0adf46f | 5964 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5965 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5966 | #else |
7f916a36 | 5967 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5968 | #endif |
7f916a36 | 5969 | break; |
6be429b1 JB |
5970 | } |
5971 | ||
ca4313d5 | 5972 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5973 | { |
5974 | send_process (proc, sig_char, 1, Qnil); | |
5975 | return; | |
5976 | } | |
5977 | /* If we can't send the signal with a character, | |
5978 | fall through and send it another way. */ | |
6be429b1 JB |
5979 | #else /* ! HAVE_TERMIOS */ |
5980 | ||
b0310da4 JB |
5981 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5982 | current control characters. */ | |
d0d6b7c5 | 5983 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5984 | |
d0d6b7c5 JB |
5985 | struct tchars c; |
5986 | struct ltchars lc; | |
5987 | ||
5988 | switch (signo) | |
5989 | { | |
5990 | case SIGINT: | |
60f0fb11 | 5991 | ioctl (p->infd, TIOCGETC, &c); |
4556b700 | 5992 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 5993 | return; |
d0d6b7c5 | 5994 | case SIGQUIT: |
60f0fb11 | 5995 | ioctl (p->infd, TIOCGETC, &c); |
4556b700 | 5996 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 5997 | return; |
0ad77c54 | 5998 | #ifdef SIGTSTP |
d0d6b7c5 | 5999 | case SIGTSTP: |
60f0fb11 | 6000 | ioctl (p->infd, TIOCGLTC, &lc); |
4556b700 | 6001 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 6002 | return; |
b0310da4 | 6003 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 6004 | } |
b0310da4 JB |
6005 | |
6006 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
6007 | ||
6008 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
6009 | characters. */ | |
6010 | #ifdef TCGETA | |
d0d6b7c5 JB |
6011 | struct termio t; |
6012 | switch (signo) | |
6013 | { | |
6014 | case SIGINT: | |
60f0fb11 | 6015 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 6016 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 6017 | return; |
d0d6b7c5 | 6018 | case SIGQUIT: |
60f0fb11 | 6019 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 6020 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 6021 | return; |
7d79e3b4 | 6022 | #ifdef SIGTSTP |
d0d6b7c5 | 6023 | case SIGTSTP: |
60f0fb11 | 6024 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 6025 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 6026 | return; |
b0310da4 | 6027 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 6028 | } |
b0310da4 JB |
6029 | #else /* ! defined (TCGETA) */ |
6030 | Your configuration files are messed up. | |
6031 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
6032 | you'd better be using one of the alternatives above! */ | |
6033 | #endif /* ! defined (TCGETA) */ | |
6034 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
f1c206fc | 6035 | /* In this case, the code above should alway returns. */ |
20505336 | 6036 | abort (); |
f1c206fc RS |
6037 | #endif /* ! defined HAVE_TERMIOS */ |
6038 | ||
6039 | /* The code above may fall through if it can't | |
6040 | handle the signal. */ | |
20505336 | 6041 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 6042 | |
177c0ea7 | 6043 | #ifdef TIOCGPGRP |
2af70a0c | 6044 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
6045 | Otherwise, use the pty to get the pgrp. |
6046 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
6047 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
6048 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
6049 | His patch indicates that if TIOCGPGRP returns an error, then |
6050 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 6051 | |
16782258 | 6052 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 6053 | |
16782258 JD |
6054 | if (gid == -1) |
6055 | /* If we can't get the information, assume | |
6056 | the shell owns the tty. */ | |
6bfd98e7 | 6057 | gid = p->pid; |
2af70a0c RS |
6058 | |
6059 | /* It is not clear whether anything really can set GID to -1. | |
6060 | Perhaps on some system one of those ioctls can or could do so. | |
6061 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
6062 | if (gid == -1) |
6063 | no_pgrp = 1; | |
b0310da4 | 6064 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
6065 | /* Can't select pgrps on this system, so we know that |
6066 | the child itself heads the pgrp. */ | |
6bfd98e7 | 6067 | gid = p->pid; |
301c3fe4 | 6068 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
6069 | |
6070 | /* If current_group is lambda, and the shell owns the terminal, | |
6071 | don't send any signal. */ | |
6bfd98e7 | 6072 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 6073 | return; |
d0d6b7c5 | 6074 | } |
d0d6b7c5 JB |
6075 | |
6076 | switch (signo) | |
6077 | { | |
6078 | #ifdef SIGCONT | |
6079 | case SIGCONT: | |
6bfd98e7 | 6080 | p->raw_status_new = 0; |
d0d6b7c5 | 6081 | p->status = Qrun; |
60f0fb11 | 6082 | p->tick = ++process_tick; |
d0d6b7c5 | 6083 | if (!nomsg) |
ff6daed3 | 6084 | status_notify (NULL); |
d0d6b7c5 | 6085 | break; |
301c3fe4 | 6086 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 JB |
6087 | case SIGINT: |
6088 | #ifdef VMS | |
4556b700 | 6089 | send_process (proc, "\003", 1, Qnil); /* ^C */ |
d0d6b7c5 JB |
6090 | goto whoosh; |
6091 | #endif | |
6092 | case SIGQUIT: | |
6093 | #ifdef VMS | |
4556b700 | 6094 | send_process (proc, "\031", 1, Qnil); /* ^Y */ |
d0d6b7c5 JB |
6095 | goto whoosh; |
6096 | #endif | |
6097 | case SIGKILL: | |
6098 | #ifdef VMS | |
6bfd98e7 | 6099 | sys$forcex (&(p->pid), 0, 1); |
d0d6b7c5 JB |
6100 | whoosh: |
6101 | #endif | |
60f0fb11 | 6102 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
6103 | break; |
6104 | } | |
6105 | ||
6106 | /* If we don't have process groups, send the signal to the immediate | |
6107 | subprocess. That isn't really right, but it's better than any | |
6108 | obvious alternative. */ | |
6109 | if (no_pgrp) | |
6110 | { | |
6bfd98e7 | 6111 | kill (p->pid, signo); |
d0d6b7c5 JB |
6112 | return; |
6113 | } | |
6114 | ||
6115 | /* gid may be a pid, or minus a pgrp's number */ | |
6116 | #ifdef TIOCSIGSEND | |
6117 | if (!NILP (current_group)) | |
16782258 | 6118 | { |
60f0fb11 | 6119 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
6120 | EMACS_KILLPG (gid, signo); |
6121 | } | |
d0d6b7c5 JB |
6122 | else |
6123 | { | |
6bfd98e7 | 6124 | gid = - p->pid; |
d0d6b7c5 JB |
6125 | kill (gid, signo); |
6126 | } | |
301c3fe4 | 6127 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 6128 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 6129 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
6130 | } |
6131 | ||
6132 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
6133 | doc: /* Interrupt process PROCESS. |
6134 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 6135 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
6136 | Second arg CURRENT-GROUP non-nil means send signal to |
6137 | the current process-group of the process's controlling terminal | |
6138 | rather than to the process's own process group. | |
6139 | If the process is a shell, this means interrupt current subjob | |
6140 | rather than the shell. | |
6141 | ||
6142 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
6143 | don't send the signal. */) | |
6144 | (process, current_group) | |
d0d6b7c5 JB |
6145 | Lisp_Object process, current_group; |
6146 | { | |
6147 | process_send_signal (process, SIGINT, current_group, 0); | |
6148 | return process; | |
6149 | } | |
6150 | ||
6151 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
6152 | doc: /* Kill process PROCESS. May be process or name of one. |
6153 | See function `interrupt-process' for more details on usage. */) | |
6154 | (process, current_group) | |
d0d6b7c5 JB |
6155 | Lisp_Object process, current_group; |
6156 | { | |
6157 | process_send_signal (process, SIGKILL, current_group, 0); | |
6158 | return process; | |
6159 | } | |
6160 | ||
6161 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
6162 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
6163 | See function `interrupt-process' for more details on usage. */) | |
6164 | (process, current_group) | |
d0d6b7c5 JB |
6165 | Lisp_Object process, current_group; |
6166 | { | |
6167 | process_send_signal (process, SIGQUIT, current_group, 0); | |
6168 | return process; | |
6169 | } | |
6170 | ||
6171 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6172 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6173 | See function `interrupt-process' for more details on usage. |
e690ca94 | 6174 | If PROCESS is a network process, inhibit handling of incoming traffic. */) |
fdb82f93 | 6175 | (process, current_group) |
d0d6b7c5 JB |
6176 | Lisp_Object process, current_group; |
6177 | { | |
e690ca94 KS |
6178 | #ifdef HAVE_SOCKETS |
6179 | if (PROCESSP (process) && NETCONN_P (process)) | |
6180 | { | |
6181 | struct Lisp_Process *p; | |
177c0ea7 | 6182 | |
e690ca94 KS |
6183 | p = XPROCESS (process); |
6184 | if (NILP (p->command) | |
60f0fb11 | 6185 | && p->infd >= 0) |
e690ca94 | 6186 | { |
60f0fb11 SM |
6187 | FD_CLR (p->infd, &input_wait_mask); |
6188 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
6189 | } |
6190 | p->command = Qt; | |
6191 | return process; | |
6192 | } | |
6193 | #endif | |
d0d6b7c5 | 6194 | #ifndef SIGTSTP |
a9a73d6c | 6195 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6196 | #else |
6197 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6198 | #endif | |
6199 | return process; | |
6200 | } | |
6201 | ||
6202 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6203 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6204 | See function `interrupt-process' for more details on usage. |
e690ca94 | 6205 | If PROCESS is a network process, resume handling of incoming traffic. */) |
fdb82f93 | 6206 | (process, current_group) |
d0d6b7c5 JB |
6207 | Lisp_Object process, current_group; |
6208 | { | |
e690ca94 KS |
6209 | #ifdef HAVE_SOCKETS |
6210 | if (PROCESSP (process) && NETCONN_P (process)) | |
6211 | { | |
6212 | struct Lisp_Process *p; | |
6213 | ||
6214 | p = XPROCESS (process); | |
6215 | if (EQ (p->command, Qt) | |
60f0fb11 | 6216 | && p->infd >= 0 |
e690ca94 KS |
6217 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
6218 | { | |
60f0fb11 SM |
6219 | FD_SET (p->infd, &input_wait_mask); |
6220 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
6221 | } |
6222 | p->command = Qnil; | |
6223 | return process; | |
6224 | } | |
6225 | #endif | |
d0d6b7c5 JB |
6226 | #ifdef SIGCONT |
6227 | process_send_signal (process, SIGCONT, current_group, 0); | |
6228 | #else | |
a9a73d6c | 6229 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6230 | #endif |
6231 | return process; | |
6232 | } | |
6233 | ||
6234 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6235 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6236 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6237 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6238 | process to signal; in this case, the process need not be a child of |
6239 | this Emacs. | |
fdb82f93 | 6240 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
6241 | (process, sigcode) |
6242 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 6243 | { |
6bfd98e7 | 6244 | pid_t pid; |
cdd5ea86 KS |
6245 | |
6246 | if (INTEGERP (process)) | |
6247 | { | |
6bfd98e7 SM |
6248 | pid = XINT (process); |
6249 | goto got_it; | |
6250 | } | |
6251 | ||
6252 | if (FLOATP (process)) | |
6253 | { | |
648f6edf | 6254 | pid = (pid_t) XFLOAT_DATA (process); |
cdd5ea86 KS |
6255 | goto got_it; |
6256 | } | |
6257 | ||
6258 | if (STRINGP (process)) | |
6259 | { | |
6260 | Lisp_Object tem; | |
6261 | if (tem = Fget_process (process), NILP (tem)) | |
6262 | { | |
6bfd98e7 SM |
6263 | pid = XINT (Fstring_to_number (process, make_number (10))); |
6264 | if (pid > 0) | |
cdd5ea86 KS |
6265 | goto got_it; |
6266 | } | |
6267 | process = tem; | |
6268 | } | |
6269 | else | |
6270 | process = get_process (process); | |
177c0ea7 | 6271 | |
cdd5ea86 KS |
6272 | if (NILP (process)) |
6273 | return process; | |
6274 | ||
6275 | CHECK_PROCESS (process); | |
6276 | pid = XPROCESS (process)->pid; | |
6bfd98e7 | 6277 | if (pid <= 0) |
cdd5ea86 KS |
6278 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
6279 | ||
6280 | got_it: | |
4766242d | 6281 | |
59324b1d | 6282 | #define parse_signal(NAME, VALUE) \ |
ec0f21f4 | 6283 | else if (!xstricmp (name, NAME)) \ |
4766242d RS |
6284 | XSETINT (sigcode, VALUE) |
6285 | ||
6286 | if (INTEGERP (sigcode)) | |
6287 | ; | |
6288 | else | |
6289 | { | |
6290 | unsigned char *name; | |
6291 | ||
b7826503 | 6292 | CHECK_SYMBOL (sigcode); |
d5db4077 | 6293 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6294 | |
ec0f21f4 | 6295 | if (!strncmp(name, "SIG", 3) || !strncmp(name, "sig", 3)) |
675984ed KS |
6296 | name += 3; |
6297 | ||
4766242d RS |
6298 | if (0) |
6299 | ; | |
59324b1d KS |
6300 | #ifdef SIGUSR1 |
6301 | parse_signal ("usr1", SIGUSR1); | |
6302 | #endif | |
6303 | #ifdef SIGUSR2 | |
6304 | parse_signal ("usr2", SIGUSR2); | |
6305 | #endif | |
6306 | #ifdef SIGTERM | |
6307 | parse_signal ("term", SIGTERM); | |
6308 | #endif | |
4766242d | 6309 | #ifdef SIGHUP |
59324b1d | 6310 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6311 | #endif |
6312 | #ifdef SIGINT | |
59324b1d | 6313 | parse_signal ("int", SIGINT); |
4766242d RS |
6314 | #endif |
6315 | #ifdef SIGQUIT | |
59324b1d | 6316 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6317 | #endif |
6318 | #ifdef SIGILL | |
59324b1d | 6319 | parse_signal ("ill", SIGILL); |
4766242d RS |
6320 | #endif |
6321 | #ifdef SIGABRT | |
59324b1d | 6322 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6323 | #endif |
6324 | #ifdef SIGEMT | |
59324b1d | 6325 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6326 | #endif |
6327 | #ifdef SIGKILL | |
59324b1d | 6328 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6329 | #endif |
6330 | #ifdef SIGFPE | |
59324b1d | 6331 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6332 | #endif |
6333 | #ifdef SIGBUS | |
59324b1d | 6334 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6335 | #endif |
6336 | #ifdef SIGSEGV | |
59324b1d | 6337 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6338 | #endif |
6339 | #ifdef SIGSYS | |
59324b1d | 6340 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6341 | #endif |
6342 | #ifdef SIGPIPE | |
59324b1d | 6343 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6344 | #endif |
6345 | #ifdef SIGALRM | |
59324b1d | 6346 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6347 | #endif |
6348 | #ifdef SIGURG | |
59324b1d | 6349 | parse_signal ("urg", SIGURG); |
4766242d RS |
6350 | #endif |
6351 | #ifdef SIGSTOP | |
59324b1d | 6352 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6353 | #endif |
6354 | #ifdef SIGTSTP | |
59324b1d | 6355 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6356 | #endif |
6357 | #ifdef SIGCONT | |
59324b1d | 6358 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6359 | #endif |
6360 | #ifdef SIGCHLD | |
59324b1d | 6361 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6362 | #endif |
6363 | #ifdef SIGTTIN | |
59324b1d | 6364 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6365 | #endif |
6366 | #ifdef SIGTTOU | |
59324b1d | 6367 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6368 | #endif |
6369 | #ifdef SIGIO | |
59324b1d | 6370 | parse_signal ("io", SIGIO); |
4766242d RS |
6371 | #endif |
6372 | #ifdef SIGXCPU | |
59324b1d | 6373 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6374 | #endif |
6375 | #ifdef SIGXFSZ | |
59324b1d | 6376 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6377 | #endif |
6378 | #ifdef SIGVTALRM | |
59324b1d | 6379 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6380 | #endif |
6381 | #ifdef SIGPROF | |
59324b1d | 6382 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6383 | #endif |
6384 | #ifdef SIGWINCH | |
59324b1d | 6385 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6386 | #endif |
6387 | #ifdef SIGINFO | |
59324b1d | 6388 | parse_signal ("info", SIGINFO); |
4766242d RS |
6389 | #endif |
6390 | else | |
9fa195a2 | 6391 | error ("Undefined signal name %s", name); |
4766242d RS |
6392 | } |
6393 | ||
59324b1d | 6394 | #undef parse_signal |
4766242d | 6395 | |
6bfd98e7 | 6396 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6397 | } |
6398 | ||
6399 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6400 | doc: /* Make PROCESS see end-of-file in its input. |
6401 | EOF comes after any text already sent to it. | |
6402 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6403 | nil, indicating the current buffer's process. | |
6404 | If PROCESS is a network connection, or is a process communicating | |
6405 | through a pipe (as opposed to a pty), then you cannot send any more | |
6406 | text to PROCESS after you call this function. */) | |
6407 | (process) | |
d0d6b7c5 JB |
6408 | Lisp_Object process; |
6409 | { | |
6410 | Lisp_Object proc; | |
de7fbd09 | 6411 | struct coding_system *coding; |
d0d6b7c5 | 6412 | |
e690ca94 KS |
6413 | if (DATAGRAM_CONN_P (process)) |
6414 | return process; | |
6415 | ||
d0d6b7c5 | 6416 | proc = get_process (process); |
60f0fb11 | 6417 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6418 | |
6419 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6420 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 RS |
6421 | update_status (XPROCESS (proc)); |
6422 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6423 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6424 | |
de7fbd09 KH |
6425 | if (CODING_REQUIRE_FLUSHING (coding)) |
6426 | { | |
6427 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6428 | send_process (proc, "", 0, Qnil); | |
6429 | } | |
6430 | ||
d0d6b7c5 | 6431 | #ifdef VMS |
4556b700 | 6432 | send_process (proc, "\032", 1, Qnil); /* ^z */ |
d0d6b7c5 | 6433 | #else |
60f0fb11 | 6434 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6435 | send_process (proc, "\004", 1, Qnil); |
d0d6b7c5 JB |
6436 | else |
6437 | { | |
4525f571 RS |
6438 | int old_outfd, new_outfd; |
6439 | ||
93853f3d | 6440 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6441 | /* If this is a network connection, or socketpair is used |
6442 | for communication with the subprocess, call shutdown to cause EOF. | |
6443 | (In some old system, shutdown to socketpair doesn't work. | |
6444 | Then we just can't win.) */ | |
6bfd98e7 | 6445 | if (XPROCESS (proc)->pid == 0 |
60f0fb11 SM |
6446 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6447 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6448 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6449 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6450 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6451 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6452 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6453 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6454 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6455 | if (new_outfd < 0) |
6456 | abort (); | |
60f0fb11 | 6457 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6458 | |
6459 | if (!proc_encode_coding_system[new_outfd]) | |
6460 | proc_encode_coding_system[new_outfd] | |
6461 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6462 | bcopy (proc_encode_coding_system[old_outfd], | |
6463 | proc_encode_coding_system[new_outfd], | |
6464 | sizeof (struct coding_system)); | |
6465 | bzero (proc_encode_coding_system[old_outfd], | |
6466 | sizeof (struct coding_system)); | |
6467 | ||
60f0fb11 | 6468 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 JB |
6469 | } |
6470 | #endif /* VMS */ | |
d0d6b7c5 JB |
6471 | return process; |
6472 | } | |
6473 | ||
6474 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 6475 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 6476 | |
6b53bb85 | 6477 | void |
d0d6b7c5 JB |
6478 | kill_buffer_processes (buffer) |
6479 | Lisp_Object buffer; | |
6480 | { | |
6481 | Lisp_Object tail, proc; | |
6482 | ||
70949dac | 6483 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6484 | { |
70949dac | 6485 | proc = XCDR (XCAR (tail)); |
b5b502d6 | 6486 | if (GC_PROCESSP (proc) |
d0d6b7c5 JB |
6487 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
6488 | { | |
6489 | if (NETCONN_P (proc)) | |
e1ab4959 | 6490 | Fdelete_process (proc); |
60f0fb11 | 6491 | else if (XPROCESS (proc)->infd >= 0) |
d0d6b7c5 JB |
6492 | process_send_signal (proc, SIGHUP, Qnil, 1); |
6493 | } | |
6494 | } | |
6495 | } | |
6496 | \f | |
3fed8ad5 GM |
6497 | /* On receipt of a signal that a child status has changed, loop asking |
6498 | about children with changed statuses until the system says there | |
6499 | are no more. | |
177c0ea7 | 6500 | |
3fed8ad5 GM |
6501 | All we do is change the status; we do not run sentinels or print |
6502 | notifications. That is saved for the next time keyboard input is | |
6503 | done, in order to avoid timing errors. | |
6504 | ||
6505 | ** WARNING: this can be called during garbage collection. | |
6506 | Therefore, it must not be fooled by the presence of mark bits in | |
6507 | Lisp objects. | |
6508 | ||
6509 | ** USG WARNING: Although it is not obvious from the documentation | |
6510 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6511 | signal() before executing at least one wait(), otherwise the | |
6512 | handler will be called again, resulting in an infinite loop. The | |
6513 | relevant portion of the documentation reads "SIGCLD signals will be | |
6514 | queued and the signal-catching function will be continually | |
6515 | reentered until the queue is empty". Invoking signal() causes the | |
6516 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
ce38070a JD |
6517 | Inc. |
6518 | ||
6519 | ** Malloc WARNING: This should never call malloc either directly or | |
6520 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6521 | |
a5cfdda8 | 6522 | #ifdef SIGCHLD |
d0d6b7c5 JB |
6523 | SIGTYPE |
6524 | sigchld_handler (signo) | |
6525 | int signo; | |
6526 | { | |
6527 | int old_errno = errno; | |
6528 | Lisp_Object proc; | |
6529 | register struct Lisp_Process *p; | |
6be429b1 | 6530 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 | 6531 | |
333f1b6f JD |
6532 | SIGNAL_THREAD_CHECK (signo); |
6533 | ||
d0d6b7c5 JB |
6534 | #ifdef BSD4_1 |
6535 | extern int sigheld; | |
6536 | sigheld |= sigbit (SIGCHLD); | |
6537 | #endif | |
6538 | ||
6539 | while (1) | |
6540 | { | |
8e050977 | 6541 | pid_t pid; |
d0d6b7c5 JB |
6542 | WAITTYPE w; |
6543 | Lisp_Object tail; | |
6544 | ||
6545 | #ifdef WNOHANG | |
6546 | #ifndef WUNTRACED | |
6547 | #define WUNTRACED 0 | |
6548 | #endif /* no WUNTRACED */ | |
6549 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 SS |
6550 | do |
6551 | { | |
d0d6b7c5 JB |
6552 | errno = 0; |
6553 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
6554 | } | |
e7d4a904 | 6555 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6556 | |
6557 | if (pid <= 0) | |
6558 | { | |
3fed8ad5 GM |
6559 | /* PID == 0 means no processes found, PID == -1 means a real |
6560 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6561 | |
6562 | /* USG systems forget handlers when they are used; | |
6563 | must reestablish each time */ | |
3c0ee47b | 6564 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6565 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
6566 | #endif | |
6567 | #ifdef BSD4_1 | |
6568 | sigheld &= ~sigbit (SIGCHLD); | |
6569 | sigrelse (SIGCHLD); | |
6570 | #endif | |
6571 | errno = old_errno; | |
6572 | return; | |
6573 | } | |
6574 | #else | |
6575 | pid = wait (&w); | |
6576 | #endif /* no WNOHANG */ | |
6577 | ||
6578 | /* Find the process that signaled us, and record its status. */ | |
6579 | ||
a5cfdda8 | 6580 | /* The process can have been deleted by Fdelete_process. */ |
8e050977 | 6581 | for (tail = deleted_pid_list; GC_CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6582 | { |
8e050977 CY |
6583 | Lisp_Object xpid = XCAR (tail); |
6584 | if ((GC_INTEGERP (xpid) && pid == (pid_t) XINT (xpid)) | |
6585 | || (GC_FLOATP (xpid) && pid == (pid_t) XFLOAT_DATA (xpid))) | |
6586 | { | |
6587 | XSETCAR (tail, Qnil); | |
6588 | goto sigchld_end_of_loop; | |
6589 | } | |
a5cfdda8 KS |
6590 | } |
6591 | ||
6592 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6593 | p = 0; |
3fed8ad5 | 6594 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6595 | { |
70949dac | 6596 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6597 | p = XPROCESS (proc); |
6bfd98e7 | 6598 | if (GC_EQ (p->childp, Qt) && p->pid == pid) |
d0d6b7c5 JB |
6599 | break; |
6600 | p = 0; | |
6601 | } | |
6602 | ||
6603 | /* Look for an asynchronous process whose pid hasn't been filled | |
6604 | in yet. */ | |
6605 | if (p == 0) | |
3fed8ad5 | 6606 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6607 | { |
70949dac | 6608 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6609 | p = XPROCESS (proc); |
6bfd98e7 | 6610 | if (p->pid == -1) |
d0d6b7c5 JB |
6611 | break; |
6612 | p = 0; | |
6613 | } | |
177c0ea7 | 6614 | |
d0d6b7c5 JB |
6615 | /* Change the status of the process that was found. */ |
6616 | if (p != 0) | |
6617 | { | |
6618 | union { int i; WAITTYPE wt; } u; | |
e98d950b | 6619 | int clear_desc_flag = 0; |
177c0ea7 | 6620 | |
60f0fb11 | 6621 | p->tick = ++process_tick; |
d0d6b7c5 | 6622 | u.wt = w; |
6bfd98e7 SM |
6623 | p->raw_status = u.i; |
6624 | p->raw_status_new = 1; | |
177c0ea7 | 6625 | |
d0d6b7c5 | 6626 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6627 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6628 | && p->infd >= 0) |
e98d950b RS |
6629 | clear_desc_flag = 1; |
6630 | ||
6631 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6632 | if (clear_desc_flag) | |
6633 | { | |
60f0fb11 SM |
6634 | FD_CLR (p->infd, &input_wait_mask); |
6635 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6636 | } |
6be429b1 | 6637 | |
214d6069 | 6638 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6639 | look around. */ |
6640 | if (input_available_clear_time) | |
6641 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6642 | } |
6643 | ||
a5cfdda8 KS |
6644 | /* There was no asynchronous process found for that pid: we have |
6645 | a synchronous process. */ | |
d0d6b7c5 JB |
6646 | else |
6647 | { | |
6648 | synch_process_alive = 0; | |
6649 | ||
6650 | /* Report the status of the synchronous process. */ | |
6651 | if (WIFEXITED (w)) | |
6652 | synch_process_retcode = WRETCODE (w); | |
6653 | else if (WIFSIGNALED (w)) | |
c22aeff8 | 6654 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6655 | |
214d6069 | 6656 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6657 | look around. */ |
6658 | if (input_available_clear_time) | |
6659 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6660 | } |
6661 | ||
a5cfdda8 KS |
6662 | sigchld_end_of_loop: |
6663 | ; | |
6664 | ||
d0d6b7c5 JB |
6665 | /* On some systems, we must return right away. |
6666 | If any more processes want to signal us, we will | |
6667 | get another signal. | |
6668 | Otherwise (on systems that have WNOHANG), loop around | |
6669 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6670 | #if (defined WINDOWSNT \ |
8a2a6032 | 6671 | || (defined USG && !defined GNU_LINUX \ |
4e6277d8 | 6672 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6673 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6674 | signal (signo, sigchld_handler); |
6675 | #endif | |
6676 | errno = old_errno; | |
6677 | return; | |
6678 | #endif /* USG, but not HPUX with WNOHANG */ | |
6679 | } | |
6680 | } | |
a5cfdda8 | 6681 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6682 | \f |
6683 | ||
6684 | static Lisp_Object | |
6685 | exec_sentinel_unwind (data) | |
6686 | Lisp_Object data; | |
6687 | { | |
70949dac | 6688 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6689 | return Qnil; |
6690 | } | |
6691 | ||
3b9a3dfa RS |
6692 | static Lisp_Object |
6693 | exec_sentinel_error_handler (error) | |
6694 | Lisp_Object error; | |
6695 | { | |
6696 | cmd_error_internal (error, "error in process sentinel: "); | |
6697 | Vinhibit_quit = Qt; | |
6698 | update_echo_area (); | |
833ba342 | 6699 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6700 | return Qt; |
3b9a3dfa RS |
6701 | } |
6702 | ||
d0d6b7c5 JB |
6703 | static void |
6704 | exec_sentinel (proc, reason) | |
6705 | Lisp_Object proc, reason; | |
6706 | { | |
dfc21838 | 6707 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6708 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6709 | int count = SPECPDL_INDEX (); |
4da2f5be | 6710 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6711 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6712 | |
84af9896 RS |
6713 | if (inhibit_sentinels) |
6714 | return; | |
6715 | ||
dfc21838 RS |
6716 | /* No need to gcpro these, because all we do with them later |
6717 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6718 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6719 | XSETBUFFER (obuffer, current_buffer); |
6720 | okeymap = current_buffer->keymap; | |
6721 | ||
d0d6b7c5 JB |
6722 | sentinel = p->sentinel; |
6723 | if (NILP (sentinel)) | |
6724 | return; | |
6725 | ||
6726 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6727 | assure that it gets restored no matter how the sentinel exits. */ | |
6728 | p->sentinel = Qnil; | |
6729 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6730 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6731 | specbind (Qinhibit_quit, Qt); | |
6545aada | 6732 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 6733 | |
4da2f5be RS |
6734 | /* In case we get recursively called, |
6735 | and we already saved the match data nonrecursively, | |
6736 | save the same match data in safely recursive fashion. */ | |
6737 | if (outer_running_asynch_code) | |
6738 | { | |
6739 | Lisp_Object tem; | |
89f2614d KS |
6740 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6741 | restore_search_regs (); | |
6742 | record_unwind_save_match_data (); | |
6743 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6744 | } |
6745 | ||
6746 | /* For speed, if a search happens within this code, | |
6747 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6748 | running_asynch_code = 1; |
4da2f5be | 6749 | |
3b9a3dfa RS |
6750 | internal_condition_case_1 (read_process_output_call, |
6751 | Fcons (sentinel, | |
6752 | Fcons (proc, Fcons (reason, Qnil))), | |
6753 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6754 | exec_sentinel_error_handler); | |
4da2f5be RS |
6755 | |
6756 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6757 | restore_search_regs (); |
4da2f5be | 6758 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6759 | |
6760 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6761 | |
6762 | /* Restore waiting_for_user_input_p as it was | |
6763 | when we were called, in case the filter clobbered it. */ | |
6764 | waiting_for_user_input_p = waiting; | |
6765 | ||
7973cfa8 | 6766 | #if 0 |
dfc21838 RS |
6767 | if (! EQ (Fcurrent_buffer (), obuffer) |
6768 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6769 | #endif |
927e08be RS |
6770 | /* But do it only if the caller is actually going to read events. |
6771 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6772 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6773 | if (waiting_for_user_input_p == -1) |
6774 | record_asynch_buffer_change (); | |
8fb3cf64 | 6775 | |
2ea6d561 | 6776 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6777 | } |
6778 | ||
6779 | /* Report all recent events of a change in process status | |
6780 | (either run the sentinel or output a message). | |
b50fe468 RS |
6781 | This is usually done while Emacs is waiting for keyboard input |
6782 | but can be done at other times. */ | |
d0d6b7c5 | 6783 | |
ff6daed3 KS |
6784 | static void |
6785 | status_notify (deleting_process) | |
6786 | struct Lisp_Process *deleting_process; | |
d0d6b7c5 JB |
6787 | { |
6788 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6789 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6790 | struct gcpro gcpro1, gcpro2; |
6791 | ||
2e4149a8 KH |
6792 | tail = Qnil; |
6793 | msg = Qnil; | |
d0d6b7c5 JB |
6794 | /* We need to gcpro tail; if read_process_output calls a filter |
6795 | which deletes a process and removes the cons to which tail points | |
6796 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6797 | reference. */ | |
6798 | GCPRO2 (tail, msg); | |
6799 | ||
30623085 RS |
6800 | /* Set this now, so that if new processes are created by sentinels |
6801 | that we run, we get called again to handle their status changes. */ | |
6802 | update_tick = process_tick; | |
6803 | ||
99784d63 | 6804 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6805 | { |
30623085 RS |
6806 | Lisp_Object symbol; |
6807 | register struct Lisp_Process *p; | |
6808 | ||
99784d63 | 6809 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6810 | p = XPROCESS (proc); |
6811 | ||
60f0fb11 | 6812 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6813 | { |
60f0fb11 | 6814 | p->update_tick = p->tick; |
d0d6b7c5 | 6815 | |
30623085 | 6816 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6817 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6818 | && ! EQ (p->status, Qconnect) |
e690ca94 KS |
6819 | && ! EQ (p->status, Qlisten) |
6820 | && ! EQ (p->command, Qt) /* Network process not stopped. */ | |
60f0fb11 | 6821 | && p->infd >= 0 |
ff6daed3 | 6822 | && p != deleting_process |
60f0fb11 | 6823 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6824 | |
30623085 | 6825 | buffer = p->buffer; |
d0d6b7c5 | 6826 | |
30623085 | 6827 | /* Get the text to use for the message. */ |
6bfd98e7 | 6828 | if (p->raw_status_new) |
30623085 | 6829 | update_status (p); |
116c423c | 6830 | msg = status_message (p); |
d0d6b7c5 | 6831 | |
30623085 RS |
6832 | /* If process is terminated, deactivate it or delete it. */ |
6833 | symbol = p->status; | |
6834 | if (CONSP (p->status)) | |
70949dac | 6835 | symbol = XCAR (p->status); |
d0d6b7c5 | 6836 | |
30623085 RS |
6837 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6838 | || EQ (symbol, Qclosed)) | |
6839 | { | |
6840 | if (delete_exited_processes) | |
6841 | remove_process (proc); | |
6842 | else | |
6843 | deactivate_process (proc); | |
6844 | } | |
d0d6b7c5 | 6845 | |
0ad61fe7 RS |
6846 | /* The actions above may have further incremented p->tick. |
6847 | So set p->update_tick again | |
6848 | so that an error in the sentinel will not cause | |
6849 | this code to be run again. */ | |
60f0fb11 | 6850 | p->update_tick = p->tick; |
30623085 RS |
6851 | /* Now output the message suitably. */ |
6852 | if (!NILP (p->sentinel)) | |
6853 | exec_sentinel (proc, msg); | |
6854 | /* Don't bother with a message in the buffer | |
6855 | when a process becomes runnable. */ | |
6856 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6857 | { | |
6858 | Lisp_Object ro, tem; | |
6859 | struct buffer *old = current_buffer; | |
d8a2934e RS |
6860 | int opoint, opoint_byte; |
6861 | int before, before_byte; | |
2e4149a8 | 6862 | |
30623085 | 6863 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 6864 | |
30623085 RS |
6865 | /* Avoid error if buffer is deleted |
6866 | (probably that's why the process is dead, too) */ | |
6867 | if (NILP (XBUFFER (buffer)->name)) | |
6868 | continue; | |
6869 | Fset_buffer (buffer); | |
12ca5cdf | 6870 | |
6ec8bbd2 | 6871 | opoint = PT; |
d8a2934e | 6872 | opoint_byte = PT_BYTE; |
30623085 RS |
6873 | /* Insert new output into buffer |
6874 | at the current end-of-output marker, | |
6875 | thus preserving logical ordering of input and output. */ | |
6876 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6877 | Fgoto_char (p->mark); |
30623085 | 6878 | else |
d8a2934e | 6879 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6880 | |
6881 | before = PT; | |
d8a2934e | 6882 | before_byte = PT_BYTE; |
30623085 RS |
6883 | |
6884 | tem = current_buffer->read_only; | |
6885 | current_buffer->read_only = Qnil; | |
6886 | insert_string ("\nProcess "); | |
6887 | Finsert (1, &p->name); | |
6888 | insert_string (" "); | |
6889 | Finsert (1, &msg); | |
6890 | current_buffer->read_only = tem; | |
d8a2934e | 6891 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6892 | |
12ca5cdf | 6893 | if (opoint >= before) |
d8a2934e RS |
6894 | SET_PT_BOTH (opoint + (PT - before), |
6895 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6896 | else |
d8a2934e | 6897 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6898 | |
30623085 | 6899 | set_buffer_internal (old); |
d0d6b7c5 | 6900 | } |
30623085 RS |
6901 | } |
6902 | } /* end for */ | |
d0d6b7c5 JB |
6903 | |
6904 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
3007ebfb | 6905 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 6906 | |
d0d6b7c5 JB |
6907 | UNGCPRO; |
6908 | } | |
0fa1789e KH |
6909 | |
6910 | \f | |
6911 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6912 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6913 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6914 | DECODING will be used to decode subprocess output and ENCODING to | |
6915 | encode subprocess input. */) | |
f3d9532b JB |
6916 | (process, decoding, encoding) |
6917 | register Lisp_Object process, decoding, encoding; | |
0fa1789e KH |
6918 | { |
6919 | register struct Lisp_Process *p; | |
6920 | ||
f3d9532b JB |
6921 | CHECK_PROCESS (process); |
6922 | p = XPROCESS (process); | |
60f0fb11 | 6923 | if (p->infd < 0) |
d5db4077 | 6924 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6925 | if (p->outfd < 0) |
d5db4077 | 6926 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6927 | Fcheck_coding_system (decoding); |
6928 | Fcheck_coding_system (encoding); | |
0fa1789e | 6929 | |
03f04413 KH |
6930 | p->decode_coding_system = decoding; |
6931 | p->encode_coding_system = encoding; | |
f3d9532b | 6932 | setup_process_coding_systems (process); |
0fa1789e KH |
6933 | |
6934 | return Qnil; | |
6935 | } | |
6936 | ||
6937 | DEFUN ("process-coding-system", | |
6938 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6939 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
f3d9532b JB |
6940 | (process) |
6941 | register Lisp_Object process; | |
0fa1789e | 6942 | { |
f3d9532b JB |
6943 | CHECK_PROCESS (process); |
6944 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6945 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6946 | } |
03f04413 KH |
6947 | |
6948 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6949 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6950 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6951 | If FLAG is non-nil, the filter is given multibyte strings. | |
6952 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6953 | all character code conversion except for end-of-line conversion is |
6954 | suppressed. */) | |
f3d9532b JB |
6955 | (process, flag) |
6956 | Lisp_Object process, flag; | |
03f04413 KH |
6957 | { |
6958 | register struct Lisp_Process *p; | |
6959 | ||
f3d9532b JB |
6960 | CHECK_PROCESS (process); |
6961 | p = XPROCESS (process); | |
60f0fb11 | 6962 | p->filter_multibyte = !NILP (flag); |
f3d9532b | 6963 | setup_process_coding_systems (process); |
03f04413 KH |
6964 | |
6965 | return Qnil; | |
6966 | } | |
6967 | ||
6968 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6969 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6970 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
f3d9532b JB |
6971 | (process) |
6972 | Lisp_Object process; | |
03f04413 KH |
6973 | { |
6974 | register struct Lisp_Process *p; | |
6975 | ||
f3d9532b JB |
6976 | CHECK_PROCESS (process); |
6977 | p = XPROCESS (process); | |
03f04413 | 6978 | |
60f0fb11 | 6979 | return (p->filter_multibyte ? Qt : Qnil); |
03f04413 KH |
6980 | } |
6981 | ||
6982 | ||
d0d6b7c5 | 6983 | \f |
da8e1115 KL |
6984 | /* Add DESC to the set of keyboard input descriptors. */ |
6985 | ||
a69281ff RS |
6986 | void |
6987 | add_keyboard_wait_descriptor (desc) | |
6988 | int desc; | |
6989 | { | |
a69281ff | 6990 | FD_SET (desc, &input_wait_mask); |
b5dc1c83 | 6991 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
6992 | if (desc > max_keyboard_desc) |
6993 | max_keyboard_desc = desc; | |
6994 | } | |
6995 | ||
994d9841 NR |
6996 | static int add_gpm_wait_descriptor_called_flag; |
6997 | ||
6998 | void | |
6999 | add_gpm_wait_descriptor (desc) | |
7000 | int desc; | |
7001 | { | |
7002 | if (! add_gpm_wait_descriptor_called_flag) | |
7003 | FD_CLR (0, &input_wait_mask); | |
7004 | add_gpm_wait_descriptor_called_flag = 1; | |
7005 | FD_SET (desc, &input_wait_mask); | |
7006 | FD_SET (desc, &gpm_wait_mask); | |
7007 | if (desc > max_gpm_desc) | |
7008 | max_gpm_desc = desc; | |
7009 | } | |
7010 | ||
a69281ff RS |
7011 | /* From now on, do not expect DESC to give keyboard input. */ |
7012 | ||
7013 | void | |
7014 | delete_keyboard_wait_descriptor (desc) | |
7015 | int desc; | |
7016 | { | |
7017 | int fd; | |
7018 | int lim = max_keyboard_desc; | |
7019 | ||
7020 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 7021 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
7022 | |
7023 | if (desc == max_keyboard_desc) | |
7024 | for (fd = 0; fd < lim; fd++) | |
7025 | if (FD_ISSET (fd, &input_wait_mask) | |
994d9841 NR |
7026 | && !FD_ISSET (fd, &non_keyboard_wait_mask) |
7027 | && !FD_ISSET (fd, &gpm_wait_mask)) | |
a69281ff RS |
7028 | max_keyboard_desc = fd; |
7029 | } | |
7030 | ||
994d9841 NR |
7031 | void |
7032 | delete_gpm_wait_descriptor (desc) | |
7033 | int desc; | |
7034 | { | |
7035 | int fd; | |
7036 | int lim = max_gpm_desc; | |
7037 | ||
7038 | FD_CLR (desc, &input_wait_mask); | |
7039 | FD_CLR (desc, &non_process_wait_mask); | |
7040 | ||
7041 | if (desc == max_gpm_desc) | |
7042 | for (fd = 0; fd < lim; fd++) | |
7043 | if (FD_ISSET (fd, &input_wait_mask) | |
7044 | && !FD_ISSET (fd, &non_keyboard_wait_mask) | |
7045 | && !FD_ISSET (fd, &non_process_wait_mask)) | |
7046 | max_gpm_desc = fd; | |
7047 | } | |
7048 | ||
a69281ff RS |
7049 | /* Return nonzero if *MASK has a bit set |
7050 | that corresponds to one of the keyboard input descriptors. */ | |
7051 | ||
ff6daed3 | 7052 | static int |
a69281ff RS |
7053 | keyboard_bit_set (mask) |
7054 | SELECT_TYPE *mask; | |
7055 | { | |
7056 | int fd; | |
7057 | ||
ee8e09af | 7058 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
7059 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
7060 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
7061 | return 1; | |
7062 | ||
7063 | return 0; | |
7064 | } | |
7065 | \f | |
dfcf069d | 7066 | void |
d0d6b7c5 JB |
7067 | init_process () |
7068 | { | |
7069 | register int i; | |
7070 | ||
84af9896 RS |
7071 | inhibit_sentinels = 0; |
7072 | ||
d0d6b7c5 JB |
7073 | #ifdef SIGCHLD |
7074 | #ifndef CANNOT_DUMP | |
7075 | if (! noninteractive || initialized) | |
7076 | #endif | |
7077 | signal (SIGCHLD, sigchld_handler); | |
7078 | #endif | |
7079 | ||
7080 | FD_ZERO (&input_wait_mask); | |
a69281ff | 7081 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 7082 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 7083 | max_process_desc = 0; |
dd2281ae | 7084 | |
bad49fc7 KS |
7085 | #ifdef NON_BLOCKING_CONNECT |
7086 | FD_ZERO (&connect_wait_mask); | |
7087 | num_pending_connects = 0; | |
7088 | #endif | |
7089 | ||
2d942bfa KS |
7090 | #ifdef ADAPTIVE_READ_BUFFERING |
7091 | process_output_delay_count = 0; | |
7092 | process_output_skip = 0; | |
7093 | #endif | |
7094 | ||
c0707982 KL |
7095 | /* Don't do this, it caused infinite select loops. The display |
7096 | method should call add_keyboard_wait_descriptor on stdin if it | |
7097 | needs that. */ | |
7098 | #if 0 | |
a69281ff | 7099 | FD_SET (0, &input_wait_mask); |
c0707982 | 7100 | #endif |
dd2281ae | 7101 | |
d0d6b7c5 | 7102 | Vprocess_alist = Qnil; |
a5cfdda8 KS |
7103 | #ifdef SIGCHLD |
7104 | deleted_pid_list = Qnil; | |
7105 | #endif | |
d0d6b7c5 JB |
7106 | for (i = 0; i < MAXDESC; i++) |
7107 | { | |
7108 | chan_process[i] = Qnil; | |
7109 | proc_buffered_char[i] = -1; | |
7110 | } | |
c7580538 KH |
7111 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
7112 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
7113 | #ifdef DATAGRAM_SOCKETS |
7114 | bzero (datagram_address, sizeof datagram_address); | |
7115 | #endif | |
9057ff80 | 7116 | |
c2bd2c26 KS |
7117 | #ifdef HAVE_SOCKETS |
7118 | { | |
7119 | Lisp_Object subfeatures = Qnil; | |
2ccf3102 KS |
7120 | struct socket_options *sopt; |
7121 | ||
9057ff80 KS |
7122 | #define ADD_SUBFEATURE(key, val) \ |
7123 | subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures) | |
7124 | ||
9057ff80 | 7125 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 7126 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
7127 | #endif |
7128 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 7129 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 KS |
7130 | #endif |
7131 | #ifdef HAVE_LOCAL_SOCKETS | |
c2bd2c26 | 7132 | ADD_SUBFEATURE (QCfamily, Qlocal); |
e1652a86 KS |
7133 | #endif |
7134 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7135 | #ifdef AF_INET6 | |
7136 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
9057ff80 KS |
7137 | #endif |
7138 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 7139 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 7140 | #endif |
a8e8ea61 | 7141 | #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY)) |
c2bd2c26 | 7142 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 7143 | #endif |
2ccf3102 KS |
7144 | |
7145 | for (sopt = socket_options; sopt->name; sopt++) | |
7146 | subfeatures = Fcons (intern (sopt->name), subfeatures); | |
7147 | ||
c2bd2c26 KS |
7148 | Fprovide (intern ("make-network-process"), subfeatures); |
7149 | } | |
7150 | #endif /* HAVE_SOCKETS */ | |
d9e7c622 | 7151 | |
ecc175e2 | 7152 | #if defined (DARWIN) || defined (MAC_OSX) |
db853b7a | 7153 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive |
d9e7c622 ST |
7154 | processes. As such, we only change the default value. */ |
7155 | if (initialized) | |
7156 | { | |
7157 | char *release = get_operating_system_release(); | |
7158 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION | |
7159 | && release[1] == '.')) { | |
7160 | Vprocess_connection_type = Qnil; | |
7161 | } | |
7162 | } | |
7163 | #endif | |
d0d6b7c5 | 7164 | } |
312c9964 | 7165 | |
dfcf069d | 7166 | void |
d0d6b7c5 JB |
7167 | syms_of_process () |
7168 | { | |
d0d6b7c5 JB |
7169 | Qprocessp = intern ("processp"); |
7170 | staticpro (&Qprocessp); | |
7171 | Qrun = intern ("run"); | |
7172 | staticpro (&Qrun); | |
7173 | Qstop = intern ("stop"); | |
7174 | staticpro (&Qstop); | |
7175 | Qsignal = intern ("signal"); | |
7176 | staticpro (&Qsignal); | |
7177 | ||
7178 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7179 | here again. | |
7180 | ||
7181 | Qexit = intern ("exit"); | |
7182 | staticpro (&Qexit); */ | |
7183 | ||
7184 | Qopen = intern ("open"); | |
7185 | staticpro (&Qopen); | |
7186 | Qclosed = intern ("closed"); | |
7187 | staticpro (&Qclosed); | |
dd2a17ab KS |
7188 | Qconnect = intern ("connect"); |
7189 | staticpro (&Qconnect); | |
7190 | Qfailed = intern ("failed"); | |
7191 | staticpro (&Qfailed); | |
e690ca94 KS |
7192 | Qlisten = intern ("listen"); |
7193 | staticpro (&Qlisten); | |
7194 | Qlocal = intern ("local"); | |
7195 | staticpro (&Qlocal); | |
e1652a86 KS |
7196 | Qipv4 = intern ("ipv4"); |
7197 | staticpro (&Qipv4); | |
7198 | #ifdef AF_INET6 | |
7199 | Qipv6 = intern ("ipv6"); | |
7200 | staticpro (&Qipv6); | |
7201 | #endif | |
9057ff80 KS |
7202 | Qdatagram = intern ("datagram"); |
7203 | staticpro (&Qdatagram); | |
e690ca94 KS |
7204 | |
7205 | QCname = intern (":name"); | |
7206 | staticpro (&QCname); | |
7207 | QCbuffer = intern (":buffer"); | |
7208 | staticpro (&QCbuffer); | |
7209 | QChost = intern (":host"); | |
7210 | staticpro (&QChost); | |
7211 | QCservice = intern (":service"); | |
7212 | staticpro (&QCservice); | |
9057ff80 KS |
7213 | QCtype = intern (":type"); |
7214 | staticpro (&QCtype); | |
e690ca94 KS |
7215 | QClocal = intern (":local"); |
7216 | staticpro (&QClocal); | |
7217 | QCremote = intern (":remote"); | |
7218 | staticpro (&QCremote); | |
7219 | QCcoding = intern (":coding"); | |
7220 | staticpro (&QCcoding); | |
7221 | QCserver = intern (":server"); | |
7222 | staticpro (&QCserver); | |
e690ca94 KS |
7223 | QCnowait = intern (":nowait"); |
7224 | staticpro (&QCnowait); | |
e690ca94 KS |
7225 | QCsentinel = intern (":sentinel"); |
7226 | staticpro (&QCsentinel); | |
7227 | QClog = intern (":log"); | |
7228 | staticpro (&QClog); | |
7229 | QCnoquery = intern (":noquery"); | |
7230 | staticpro (&QCnoquery); | |
7231 | QCstop = intern (":stop"); | |
7232 | staticpro (&QCstop); | |
7233 | QCoptions = intern (":options"); | |
7234 | staticpro (&QCoptions); | |
faa7db08 KS |
7235 | QCplist = intern (":plist"); |
7236 | staticpro (&QCplist); | |
7392e23c KS |
7237 | QCfilter_multibyte = intern (":filter-multibyte"); |
7238 | staticpro (&QCfilter_multibyte); | |
177c0ea7 | 7239 | |
6545aada RS |
7240 | Qlast_nonmenu_event = intern ("last-nonmenu-event"); |
7241 | staticpro (&Qlast_nonmenu_event); | |
7242 | ||
d0d6b7c5 | 7243 | staticpro (&Vprocess_alist); |
a5cfdda8 KS |
7244 | #ifdef SIGCHLD |
7245 | staticpro (&deleted_pid_list); | |
7246 | #endif | |
d0d6b7c5 JB |
7247 | |
7248 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
fdb82f93 | 7249 | doc: /* *Non-nil means delete processes immediately when they exit. |
d4e83d5c | 7250 | A value of nil means don't delete them until `list-processes' is run. */); |
d0d6b7c5 JB |
7251 | |
7252 | delete_exited_processes = 1; | |
7253 | ||
7254 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
7255 | doc: /* Control type of device used to communicate with subprocesses. |
7256 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7257 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7258 | then a pipe is used in any case. | |
7259 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
7260 | Vprocess_connection_type = Qt; |
7261 | ||
2d942bfa KS |
7262 | #ifdef ADAPTIVE_READ_BUFFERING |
7263 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
7264 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
f3d9532b | 7265 | On some systems, when Emacs reads the output from a subprocess, the output data |
2d942bfa | 7266 | is read in very small blocks, potentially resulting in very poor performance. |
2de35a25 | 7267 | This behavior can be remedied to some extent by setting this variable to a |
2d942bfa | 7268 | non-nil value, as it will automatically delay reading from such processes, to |
635a3496 | 7269 | allow them to produce more output before Emacs tries to read it. |
2d942bfa KS |
7270 | If the value is t, the delay is reset after each write to the process; any other |
7271 | non-nil value means that the delay is not reset on write. | |
7272 | The variable takes effect when `start-process' is called. */); | |
7273 | Vprocess_adaptive_read_buffering = Qt; | |
7274 | #endif | |
7275 | ||
d0d6b7c5 JB |
7276 | defsubr (&Sprocessp); |
7277 | defsubr (&Sget_process); | |
7278 | defsubr (&Sget_buffer_process); | |
7279 | defsubr (&Sdelete_process); | |
7280 | defsubr (&Sprocess_status); | |
7281 | defsubr (&Sprocess_exit_status); | |
7282 | defsubr (&Sprocess_id); | |
7283 | defsubr (&Sprocess_name); | |
3b9a3dfa | 7284 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
7285 | defsubr (&Sprocess_command); |
7286 | defsubr (&Sset_process_buffer); | |
7287 | defsubr (&Sprocess_buffer); | |
7288 | defsubr (&Sprocess_mark); | |
7289 | defsubr (&Sset_process_filter); | |
7290 | defsubr (&Sprocess_filter); | |
7291 | defsubr (&Sset_process_sentinel); | |
7292 | defsubr (&Sprocess_sentinel); | |
de282a05 | 7293 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
7294 | defsubr (&Sset_process_inherit_coding_system_flag); |
7295 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
7296 | defsubr (&Sset_process_query_on_exit_flag); |
7297 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 7298 | defsubr (&Sprocess_contact); |
faa7db08 KS |
7299 | defsubr (&Sprocess_plist); |
7300 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
7301 | defsubr (&Slist_processes); |
7302 | defsubr (&Sprocess_list); | |
7303 | defsubr (&Sstart_process); | |
7304 | #ifdef HAVE_SOCKETS | |
2ccf3102 | 7305 | defsubr (&Sset_network_process_option); |
e690ca94 | 7306 | defsubr (&Smake_network_process); |
991234f0 | 7307 | defsubr (&Sformat_network_address); |
b8c7fd71 KS |
7308 | #endif /* HAVE_SOCKETS */ |
7309 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
161933c7 KS |
7310 | #ifdef SIOCGIFCONF |
7311 | defsubr (&Snetwork_interface_list); | |
7312 | #endif | |
7313 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
2ccf3102 | 7314 | defsubr (&Snetwork_interface_info); |
161933c7 | 7315 | #endif |
b8c7fd71 | 7316 | #endif /* HAVE_SOCKETS ... */ |
e690ca94 KS |
7317 | #ifdef DATAGRAM_SOCKETS |
7318 | defsubr (&Sprocess_datagram_address); | |
7319 | defsubr (&Sset_process_datagram_address); | |
7320 | #endif | |
d0d6b7c5 JB |
7321 | defsubr (&Saccept_process_output); |
7322 | defsubr (&Sprocess_send_region); | |
7323 | defsubr (&Sprocess_send_string); | |
7324 | defsubr (&Sinterrupt_process); | |
7325 | defsubr (&Skill_process); | |
7326 | defsubr (&Squit_process); | |
7327 | defsubr (&Sstop_process); | |
7328 | defsubr (&Scontinue_process); | |
b81ea5ef | 7329 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
7330 | defsubr (&Sprocess_send_eof); |
7331 | defsubr (&Ssignal_process); | |
7332 | defsubr (&Swaiting_for_user_input_p); | |
7333 | /* defsubr (&Sprocess_connection); */ | |
0fa1789e KH |
7334 | defsubr (&Sset_process_coding_system); |
7335 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
7336 | defsubr (&Sset_process_filter_multibyte); |
7337 | defsubr (&Sprocess_filter_multibyte_p); | |
d0d6b7c5 JB |
7338 | } |
7339 | ||
6720a7fb JB |
7340 | \f |
7341 | #else /* not subprocesses */ | |
7342 | ||
7343 | #include <sys/types.h> | |
7344 | #include <errno.h> | |
7345 | ||
7346 | #include "lisp.h" | |
7347 | #include "systime.h" | |
52a1b894 EZ |
7348 | #include "charset.h" |
7349 | #include "coding.h" | |
6720a7fb | 7350 | #include "termopts.h" |
81afb6d1 | 7351 | #include "sysselect.h" |
6720a7fb | 7352 | |
ff11dfa1 | 7353 | extern int frame_garbaged; |
6720a7fb | 7354 | |
f694e5d2 KH |
7355 | extern EMACS_TIME timer_check (); |
7356 | extern int timers_run; | |
6720a7fb | 7357 | |
9057ff80 KS |
7358 | Lisp_Object QCtype; |
7359 | ||
6720a7fb JB |
7360 | /* As described above, except assuming that there are no subprocesses: |
7361 | ||
7362 | Wait for timeout to elapse and/or keyboard input to be available. | |
7363 | ||
7364 | time_limit is: | |
7365 | timeout in seconds, or | |
7366 | zero for no limit, or | |
7367 | -1 means gobble data immediately available but don't wait for any. | |
7368 | ||
f76475ad | 7369 | read_kbd is a Lisp_Object: |
6720a7fb JB |
7370 | 0 to ignore keyboard input, or |
7371 | 1 to return when input is available, or | |
7372 | -1 means caller will actually read the input, so don't throw to | |
7373 | the quit handler. | |
b89a415a KS |
7374 | |
7375 | see full version for other parameters. We know that wait_proc will | |
7376 | always be NULL, since `subprocesses' isn't defined. | |
6720a7fb JB |
7377 | |
7378 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 7379 | output that arrives. |
6720a7fb | 7380 | |
e0f24100 | 7381 | Return true if we received input from any process. */ |
6720a7fb JB |
7382 | |
7383 | int | |
214d6069 KS |
7384 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
7385 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
7386 | int time_limit, microsecs, read_kbd, do_display; |
7387 | Lisp_Object wait_for_cell; | |
7388 | struct Lisp_Process *wait_proc; | |
7389 | int just_wait_proc; | |
6720a7fb | 7390 | { |
52fd88d3 | 7391 | register int nfds; |
f694e5d2 | 7392 | EMACS_TIME end_time, timeout; |
8db121c4 | 7393 | SELECT_TYPE waitchannels; |
f694e5d2 | 7394 | int xerrno; |
6720a7fb JB |
7395 | |
7396 | /* What does time_limit really mean? */ | |
7397 | if (time_limit || microsecs) | |
7398 | { | |
6720a7fb | 7399 | EMACS_GET_TIME (end_time); |
52fd88d3 | 7400 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
7401 | EMACS_ADD_TIME (end_time, end_time, timeout); |
7402 | } | |
6720a7fb JB |
7403 | |
7404 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 7405 | and then turn off any other atimers, |
6720a7fb | 7406 | because the select emulator uses alarms. */ |
75eb23f1 | 7407 | stop_polling (); |
30904ab7 | 7408 | turn_on_atimers (0); |
6720a7fb | 7409 | |
52fd88d3 | 7410 | while (1) |
6720a7fb | 7411 | { |
bae8d137 | 7412 | int timeout_reduced_for_timers = 0; |
6720a7fb | 7413 | |
6720a7fb JB |
7414 | /* If calling from keyboard input, do not quit |
7415 | since we want to return C-g as an input character. | |
7416 | Otherwise, do pending quit if requested. */ | |
b89a415a | 7417 | if (read_kbd >= 0) |
6720a7fb JB |
7418 | QUIT; |
7419 | ||
0a65b032 | 7420 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7421 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
7422 | break; |
7423 | ||
bae8d137 RS |
7424 | /* Compute time from now till when time limit is up */ |
7425 | /* Exit if already run out */ | |
52fd88d3 EZ |
7426 | if (time_limit == -1) |
7427 | { | |
7428 | /* -1 specified for timeout means | |
7429 | gobble output available now | |
7430 | but don't wait at all. */ | |
7431 | ||
7432 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
7433 | } | |
7434 | else if (time_limit || microsecs) | |
6720a7fb | 7435 | { |
f694e5d2 KH |
7436 | EMACS_GET_TIME (timeout); |
7437 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
7438 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
7439 | break; |
7440 | } | |
52fd88d3 EZ |
7441 | else |
7442 | { | |
7443 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
7444 | } | |
6720a7fb | 7445 | |
bae8d137 RS |
7446 | /* If our caller will not immediately handle keyboard events, |
7447 | run timer events directly. | |
7448 | (Callers that will immediately read keyboard events | |
7449 | call timer_delay on their own.) */ | |
f3fbd155 | 7450 | if (NILP (wait_for_cell)) |
bae8d137 RS |
7451 | { |
7452 | EMACS_TIME timer_delay; | |
0a65b032 | 7453 | |
9baacf76 | 7454 | do |
0a65b032 | 7455 | { |
9baacf76 GM |
7456 | int old_timers_run = timers_run; |
7457 | timer_delay = timer_check (1); | |
7458 | if (timers_run != old_timers_run && do_display) | |
7459 | /* We must retry, since a timer may have requeued itself | |
7460 | and that could alter the time delay. */ | |
3007ebfb | 7461 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
7462 | else |
7463 | break; | |
0a65b032 | 7464 | } |
9baacf76 | 7465 | while (!detect_input_pending ()); |
0a65b032 | 7466 | |
52fd88d3 | 7467 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7468 | if (read_kbd != 0 |
52fd88d3 EZ |
7469 | && requeued_events_pending_p ()) |
7470 | break; | |
7471 | ||
f694e5d2 | 7472 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
7473 | { |
7474 | EMACS_TIME difference; | |
f694e5d2 | 7475 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
7476 | if (EMACS_TIME_NEG_P (difference)) |
7477 | { | |
f694e5d2 | 7478 | timeout = timer_delay; |
bae8d137 RS |
7479 | timeout_reduced_for_timers = 1; |
7480 | } | |
7481 | } | |
7482 | } | |
7483 | ||
6720a7fb JB |
7484 | /* Cause C-g and alarm signals to take immediate action, |
7485 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7486 | if (read_kbd < 0) |
6720a7fb JB |
7487 | set_waiting_for_input (&timeout); |
7488 | ||
0a65b032 RS |
7489 | /* Wait till there is something to do. */ |
7490 | ||
b89a415a | 7491 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
7492 | FD_ZERO (&waitchannels); |
7493 | else | |
7494 | FD_SET (0, &waitchannels); | |
7495 | ||
ff11dfa1 | 7496 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7497 | reprocess its display stuff. */ |
5164ee8e | 7498 | if (frame_garbaged && do_display) |
0a65b032 RS |
7499 | { |
7500 | clear_waiting_for_input (); | |
3007ebfb | 7501 | redisplay_preserve_echo_area (15); |
b89a415a | 7502 | if (read_kbd < 0) |
0a65b032 RS |
7503 | set_waiting_for_input (&timeout); |
7504 | } | |
6720a7fb | 7505 | |
b89a415a | 7506 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
7507 | { |
7508 | nfds = 0; | |
7509 | FD_ZERO (&waitchannels); | |
7510 | } | |
7511 | else | |
7512 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7513 | &timeout); | |
f694e5d2 KH |
7514 | |
7515 | xerrno = errno; | |
6720a7fb JB |
7516 | |
7517 | /* Make C-g and alarm signals set flags again */ | |
7518 | clear_waiting_for_input (); | |
7519 | ||
7520 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7521 | do_pending_window_change (0); |
6720a7fb | 7522 | |
f694e5d2 KH |
7523 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7524 | /* We waited the full specified time, so return now. */ | |
7525 | break; | |
7526 | ||
6720a7fb JB |
7527 | if (nfds == -1) |
7528 | { | |
7529 | /* If the system call was interrupted, then go around the | |
7530 | loop again. */ | |
f694e5d2 | 7531 | if (xerrno == EINTR) |
8db121c4 | 7532 | FD_ZERO (&waitchannels); |
f694e5d2 | 7533 | else |
68c45bf0 | 7534 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb JB |
7535 | } |
7536 | #ifdef sun | |
7537 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) | |
7538 | /* System sometimes fails to deliver SIGIO. */ | |
7539 | kill (getpid (), SIGIO); | |
7540 | #endif | |
7324d660 | 7541 | #ifdef SIGIO |
b89a415a | 7542 | if (read_kbd && interrupt_input && (waitchannels & 1)) |
e643c5be | 7543 | kill (getpid (), SIGIO); |
7324d660 | 7544 | #endif |
6720a7fb | 7545 | |
f694e5d2 KH |
7546 | /* Check for keyboard input */ |
7547 | ||
b89a415a | 7548 | if (read_kbd |
78c1afb6 | 7549 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7550 | { |
78c1afb6 | 7551 | swallow_events (do_display); |
f694e5d2 | 7552 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7553 | break; |
78c1afb6 EZ |
7554 | } |
7555 | ||
52fd88d3 | 7556 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7557 | if (read_kbd |
52fd88d3 EZ |
7558 | && requeued_events_pending_p ()) |
7559 | break; | |
7560 | ||
f854a00b RS |
7561 | /* If wait_for_cell. check for keyboard input |
7562 | but don't run any timers. | |
7563 | ??? (It seems wrong to me to check for keyboard | |
7564 | input at all when wait_for_cell, but the code | |
7565 | has been this way since July 1994. | |
7566 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7567 | if (! NILP (wait_for_cell) |
f854a00b RS |
7568 | && detect_input_pending ()) |
7569 | { | |
7570 | swallow_events (do_display); | |
7571 | if (detect_input_pending ()) | |
7572 | break; | |
7573 | } | |
7574 | ||
0a65b032 | 7575 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7576 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7577 | break; |
6720a7fb JB |
7578 | } |
7579 | ||
a87b802f JB |
7580 | start_polling (); |
7581 | ||
6720a7fb JB |
7582 | return 0; |
7583 | } | |
7584 | ||
7585 | ||
e2ba787b PJ |
7586 | /* Don't confuse make-docfile by having two doc strings for this function. |
7587 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 7588 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
7589 | 0) |
7590 | (name) | |
6720a7fb JB |
7591 | register Lisp_Object name; |
7592 | { | |
7593 | return Qnil; | |
7594 | } | |
7595 | ||
e2ba787b PJ |
7596 | /* Don't confuse make-docfile by having two doc strings for this function. |
7597 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 7598 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7599 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7600 | 1, 1, 0, | |
7601 | 0) | |
7602 | (process) | |
52a1b894 EZ |
7603 | register Lisp_Object process; |
7604 | { | |
7605 | /* Ignore the argument and return the value of | |
7606 | inherit-process-coding-system. */ | |
7607 | return inherit_process_coding_system ? Qt : Qnil; | |
7608 | } | |
7609 | ||
6720a7fb JB |
7610 | /* Kill all processes associated with `buffer'. |
7611 | If `buffer' is nil, kill all processes. | |
7612 | Since we have no subprocesses, this does nothing. */ | |
7613 | ||
d9bb0c32 | 7614 | void |
6720a7fb JB |
7615 | kill_buffer_processes (buffer) |
7616 | Lisp_Object buffer; | |
7617 | { | |
7618 | } | |
7619 | ||
02b9b4fd | 7620 | void |
6720a7fb JB |
7621 | init_process () |
7622 | { | |
7623 | } | |
7624 | ||
02b9b4fd | 7625 | void |
6720a7fb JB |
7626 | syms_of_process () |
7627 | { | |
9057ff80 KS |
7628 | QCtype = intern (":type"); |
7629 | staticpro (&QCtype); | |
7630 | ||
6720a7fb | 7631 | defsubr (&Sget_buffer_process); |
52a1b894 | 7632 | defsubr (&Sprocess_inherit_coding_system_flag); |
6720a7fb JB |
7633 | } |
7634 | ||
7635 | \f | |
7636 | #endif /* not subprocesses */ | |
ab5796a9 MB |
7637 | |
7638 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
7639 | (do not change this comment) */ |