Commit | Line | Data |
---|---|---|
d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
95df8112 | 2 | |
acaf905b | 3 | Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2012 |
95df8112 | 4 | Free Software Foundation, Inc. |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
d0d6b7c5 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
d0d6b7c5 JB |
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 | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d0d6b7c5 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
6a09a33b PE |
23 | |
24 | #define PROCESS_INLINE EXTERN_INLINE | |
25 | ||
d0d6b7c5 JB |
26 | #include <stdio.h> |
27 | #include <errno.h> | |
6c60eb9f | 28 | #include <sys/types.h> /* Some typedefs are used in sys/file.h. */ |
d0d6b7c5 JB |
29 | #include <sys/file.h> |
30 | #include <sys/stat.h> | |
93b4f699 | 31 | #include <unistd.h> |
e98d950b | 32 | #include <fcntl.h> |
e98d950b | 33 | |
0898ca10 JB |
34 | #include "lisp.h" |
35 | ||
f388c88a EZ |
36 | /* Only MS-DOS does not define `subprocesses'. */ |
37 | #ifdef subprocesses | |
38 | ||
d0d6b7c5 JB |
39 | #include <sys/socket.h> |
40 | #include <netdb.h> | |
41 | #include <netinet/in.h> | |
42 | #include <arpa/inet.h> | |
e690ca94 KS |
43 | |
44 | /* Are local (unix) sockets supported? */ | |
4624371d | 45 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
46 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
47 | #define AF_LOCAL AF_UNIX | |
48 | #endif | |
49 | #ifdef AF_LOCAL | |
50 | #define HAVE_LOCAL_SOCKETS | |
51 | #include <sys/un.h> | |
52 | #endif | |
53 | #endif | |
d0d6b7c5 | 54 | |
d0d6b7c5 | 55 | #include <sys/ioctl.h> |
5e617bc2 | 56 | #if defined (HAVE_NET_IF_H) |
32bc6709 DN |
57 | #include <net/if.h> |
58 | #endif /* HAVE_NET_IF_H */ | |
d0d6b7c5 | 59 | |
5e617bc2 | 60 | #if defined (HAVE_IFADDRS_H) |
377538cb JD |
61 | /* Must be after net/if.h */ |
62 | #include <ifaddrs.h> | |
63 | ||
64 | /* We only use structs from this header when we use getifaddrs. */ | |
5e617bc2 | 65 | #if defined (HAVE_NET_IF_DL_H) |
377538cb JD |
66 | #include <net/if_dl.h> |
67 | #endif | |
68 | ||
69 | #endif | |
70 | ||
d0d6b7c5 JB |
71 | #ifdef NEED_BSDTTY |
72 | #include <bsdtty.h> | |
73 | #endif | |
74 | ||
4a4bbad2 PE |
75 | #ifdef USG5_4 |
76 | # include <sys/stream.h> | |
77 | # include <sys/stropts.h> | |
78 | #endif | |
79 | ||
08116b48 CY |
80 | #ifdef HAVE_RES_INIT |
81 | #include <netinet/in.h> | |
82 | #include <arpa/nameser.h> | |
83 | #include <resolv.h> | |
84 | #endif | |
85 | ||
3d608a86 J |
86 | #ifdef HAVE_UTIL_H |
87 | #include <util.h> | |
88 | #endif | |
89 | ||
9bf58201 DN |
90 | #ifdef HAVE_PTY_H |
91 | #include <pty.h> | |
92 | #endif | |
93 | ||
f388c88a EZ |
94 | #endif /* subprocesses */ |
95 | ||
d0d6b7c5 | 96 | #include "systime.h" |
36ebaafa | 97 | #include "systty.h" |
d0d6b7c5 | 98 | |
d0d6b7c5 | 99 | #include "window.h" |
5bbf78c1 | 100 | #include "character.h" |
e5560ff7 | 101 | #include "buffer.h" |
0fa1789e | 102 | #include "coding.h" |
d0d6b7c5 | 103 | #include "process.h" |
428a555e | 104 | #include "frame.h" |
d0d6b7c5 JB |
105 | #include "termhooks.h" |
106 | #include "termopts.h" | |
107 | #include "commands.h" | |
3ec68006 | 108 | #include "keyboard.h" |
ececcbec | 109 | #include "blockinput.h" |
dfcf069d | 110 | #include "dispextern.h" |
e0016554 | 111 | #include "composite.h" |
30904ab7 | 112 | #include "atimer.h" |
f388c88a EZ |
113 | #include "sysselect.h" |
114 | #include "syssignal.h" | |
115 | #include "syswait.h" | |
8af55556 TZ |
116 | #ifdef HAVE_GNUTLS |
117 | #include "gnutls.h" | |
118 | #endif | |
d0d6b7c5 | 119 | |
17a2cbbd DC |
120 | #ifdef HAVE_WINDOW_SYSTEM |
121 | #include TERM_HEADER | |
122 | #endif /* HAVE_WINDOW_SYSTEM */ | |
123 | ||
0949d2b6 | 124 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 | 125 | #include "xgselect.h" |
0949d2b6 | 126 | #endif |
57507bf8 | 127 | |
20ef56db PE |
128 | #ifndef WNOHANG |
129 | # undef waitpid | |
130 | # define waitpid(pid, status, options) wait (status) | |
131 | #endif | |
132 | #ifndef WUNTRACED | |
133 | # define WUNTRACED 0 | |
134 | #endif | |
135 | ||
b8df54ff PE |
136 | /* Work around GCC 4.7.0 bug with strict overflow checking; see |
137 | <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>. | |
138 | These lines can be removed once the GCC bug is fixed. */ | |
139 | #if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__ | |
140 | # pragma GCC diagnostic ignored "-Wstrict-overflow" | |
141 | #endif | |
142 | ||
fdb183d6 DN |
143 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
144 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
145 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
146 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
147 | Lisp_Object QCname, QCtype; | |
148 | \f | |
149 | /* Non-zero if keyboard input is on hold, zero otherwise. */ | |
150 | ||
151 | static int kbd_is_on_hold; | |
152 | ||
fdb183d6 DN |
153 | /* Nonzero means don't run process sentinels. This is used |
154 | when exiting. */ | |
155 | int inhibit_sentinels; | |
156 | ||
f388c88a EZ |
157 | #ifdef subprocesses |
158 | ||
dd2281ae | 159 | Lisp_Object Qprocessp; |
955cbe7b PE |
160 | static Lisp_Object Qrun, Qstop, Qsignal; |
161 | static Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; | |
162 | Lisp_Object Qlocal; | |
163 | static Lisp_Object Qipv4, Qdatagram, Qseqpacket; | |
164 | static Lisp_Object Qreal, Qnetwork, Qserial; | |
e1652a86 | 165 | #ifdef AF_INET6 |
955cbe7b | 166 | static Lisp_Object Qipv6; |
e1652a86 | 167 | #endif |
955cbe7b PE |
168 | static Lisp_Object QCport, QCprocess; |
169 | Lisp_Object QCspeed; | |
d888760c GM |
170 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; |
171 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
955cbe7b PE |
172 | static Lisp_Object QCbuffer, QChost, QCservice; |
173 | static Lisp_Object QClocal, QCremote, QCcoding; | |
174 | static Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; | |
175 | static Lisp_Object QCsentinel, QClog, QCoptions, QCplist; | |
176 | static Lisp_Object Qlast_nonmenu_event; | |
e0f712ba | 177 | |
4d2b044c DA |
178 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
179 | #define NETCONN1_P(p) (EQ (p->type, Qnetwork)) | |
180 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
181 | #define SERIALCONN1_P(p) (EQ (p->type, Qserial)) | |
d0d6b7c5 | 182 | |
5f0929a7 RS |
183 | #ifndef HAVE_H_ERRNO |
184 | extern int h_errno; | |
185 | #endif | |
186 | ||
d0d6b7c5 | 187 | /* Number of events of change of status of a process. */ |
e4d81efc | 188 | static EMACS_INT process_tick; |
d0d6b7c5 | 189 | /* Number of events for which the user or sentinel has been notified. */ |
e4d81efc | 190 | static EMACS_INT update_tick; |
d0d6b7c5 | 191 | |
dd2a17ab KS |
192 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
193 | ||
82d6e50b | 194 | /* Only W32 has this, it really means that select can't take write mask. */ |
dd2a17ab KS |
195 | #ifdef BROKEN_NON_BLOCKING_CONNECT |
196 | #undef NON_BLOCKING_CONNECT | |
82d6e50b | 197 | #define SELECT_CANT_DO_WRITE_MASK |
dd2a17ab KS |
198 | #else |
199 | #ifndef NON_BLOCKING_CONNECT | |
dd2a17ab KS |
200 | #ifdef HAVE_SELECT |
201 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
202 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
203 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
204 | #define NON_BLOCKING_CONNECT | |
205 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
206 | #endif /* O_NONBLOCK || O_NDELAY */ | |
207 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
208 | #endif /* HAVE_SELECT */ | |
dd2a17ab KS |
209 | #endif /* NON_BLOCKING_CONNECT */ |
210 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
211 | ||
e690ca94 KS |
212 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
213 | this system. We need to read full packets, so we need a | |
214 | "non-destructive" select. So we require either native select, | |
215 | or emulation of select using FIONREAD. */ | |
216 | ||
4a4bbad2 PE |
217 | #ifndef BROKEN_DATAGRAM_SOCKETS |
218 | # if defined HAVE_SELECT || defined USABLE_FIONREAD | |
219 | # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE | |
220 | # define DATAGRAM_SOCKETS | |
221 | # endif | |
222 | # endif | |
223 | #endif | |
e690ca94 | 224 | |
f00c449b SM |
225 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
226 | # define HAVE_SEQPACKET | |
227 | #endif | |
228 | ||
6b61353c | 229 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
6b61353c KH |
230 | #define ADAPTIVE_READ_BUFFERING |
231 | #endif | |
6b61353c KH |
232 | |
233 | #ifdef ADAPTIVE_READ_BUFFERING | |
d35af63c | 234 | #define READ_OUTPUT_DELAY_INCREMENT (EMACS_TIME_RESOLUTION / 100) |
6b61353c KH |
235 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) |
236 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
237 | ||
db853b7a KS |
238 | /* Number of processes which have a non-zero read_output_delay, |
239 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
240 | |
241 | static int process_output_delay_count; | |
242 | ||
db853b7a | 243 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
244 | |
245 | static int process_output_skip; | |
246 | ||
6b61353c KH |
247 | #else |
248 | #define process_output_delay_count 0 | |
249 | #endif | |
250 | ||
40ccffa6 | 251 | static void create_process (Lisp_Object, char **, Lisp_Object); |
4a4bbad2 | 252 | #ifdef USABLE_SIGIO |
f57e2426 | 253 | static int keyboard_bit_set (SELECT_TYPE *); |
006c5daa | 254 | #endif |
f57e2426 J |
255 | static void deactivate_process (Lisp_Object); |
256 | static void status_notify (struct Lisp_Process *); | |
257 | static int read_process_output (Lisp_Object, int); | |
258 | static void create_pty (Lisp_Object); | |
41d03b9a | 259 | |
583dcae4 | 260 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 261 | to detect C-g. It isn't actually used when doing interrupt input. */ |
5e617bc2 | 262 | #if defined (HAVE_WINDOW_SYSTEM) && !defined (USE_ASYNC_EVENTS) |
44ade2e9 RS |
263 | #define POLL_FOR_INPUT |
264 | #endif | |
265 | ||
d3da34e0 JB |
266 | static Lisp_Object get_process (register Lisp_Object name); |
267 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 268 | |
f388c88a EZ |
269 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
270 | ||
271 | static SELECT_TYPE input_wait_mask; | |
272 | ||
994d9841 | 273 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
274 | |
275 | static SELECT_TYPE non_keyboard_wait_mask; | |
276 | ||
994d9841 | 277 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
278 | |
279 | static SELECT_TYPE non_process_wait_mask; | |
280 | ||
3fad2ad2 | 281 | /* Mask for selecting for write. */ |
994d9841 | 282 | |
3fad2ad2 | 283 | static SELECT_TYPE write_mask; |
994d9841 | 284 | |
bad49fc7 | 285 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
286 | /* Mask of bits indicating the descriptors that we wait for connect to |
287 | complete on. Once they complete, they are removed from this mask | |
288 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
289 | ||
290 | static SELECT_TYPE connect_wait_mask; | |
291 | ||
292 | /* Number of bits set in connect_wait_mask. */ | |
293 | static int num_pending_connects; | |
f388c88a | 294 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 295 | |
7d0e672e RS |
296 | /* The largest descriptor currently in use for a process object. */ |
297 | static int max_process_desc; | |
298 | ||
3fad2ad2 J |
299 | /* The largest descriptor currently in use for input. */ |
300 | static int max_input_desc; | |
994d9841 | 301 | |
d0d6b7c5 | 302 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
40ccffa6 | 303 | static Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
304 | |
305 | /* Alist of elements (NAME . PROCESS) */ | |
40ccffa6 | 306 | static Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
307 | |
308 | /* Buffered-ahead input char from process, indexed by channel. | |
309 | -1 means empty (no char is buffered). | |
310 | Used on sys V where the only way to tell if there is any | |
311 | output from the process is to read at least one char. | |
312 | Always -1 on systems that support FIONREAD. */ | |
313 | ||
40ccffa6 | 314 | static int proc_buffered_char[MAXDESC]; |
dd2281ae | 315 | |
0fa1789e | 316 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
317 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
318 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 319 | |
e690ca94 KS |
320 | #ifdef DATAGRAM_SOCKETS |
321 | /* Table of `partner address' for datagram sockets. */ | |
40ccffa6 | 322 | static struct sockaddr_and_len { |
e690ca94 KS |
323 | struct sockaddr *sa; |
324 | int len; | |
325 | } datagram_address[MAXDESC]; | |
326 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 327 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
328 | #else |
329 | #define DATAGRAM_CHAN_P(chan) (0) | |
330 | #define DATAGRAM_CONN_P(proc) (0) | |
331 | #endif | |
332 | ||
93b4f699 RS |
333 | /* Maximum number of bytes to send to a pty without an eof. */ |
334 | static int pty_max_bytes; | |
3b9a3dfa | 335 | |
6a09a33b PE |
336 | /* These setters are used only in this file, so they can be private. */ |
337 | static inline void | |
338 | pset_buffer (struct Lisp_Process *p, Lisp_Object val) | |
339 | { | |
340 | p->buffer = val; | |
341 | } | |
342 | static inline void | |
343 | pset_command (struct Lisp_Process *p, Lisp_Object val) | |
344 | { | |
345 | p->command = val; | |
346 | } | |
347 | static inline void | |
348 | pset_decode_coding_system (struct Lisp_Process *p, Lisp_Object val) | |
349 | { | |
350 | p->decode_coding_system = val; | |
351 | } | |
352 | static inline void | |
353 | pset_decoding_buf (struct Lisp_Process *p, Lisp_Object val) | |
354 | { | |
355 | p->decoding_buf = val; | |
356 | } | |
357 | static inline void | |
358 | pset_encode_coding_system (struct Lisp_Process *p, Lisp_Object val) | |
359 | { | |
360 | p->encode_coding_system = val; | |
361 | } | |
362 | static inline void | |
363 | pset_encoding_buf (struct Lisp_Process *p, Lisp_Object val) | |
364 | { | |
365 | p->encoding_buf = val; | |
366 | } | |
367 | static inline void | |
368 | pset_filter (struct Lisp_Process *p, Lisp_Object val) | |
369 | { | |
370 | p->filter = val; | |
371 | } | |
372 | static inline void | |
373 | pset_log (struct Lisp_Process *p, Lisp_Object val) | |
374 | { | |
375 | p->log = val; | |
376 | } | |
377 | static inline void | |
378 | pset_mark (struct Lisp_Process *p, Lisp_Object val) | |
379 | { | |
380 | p->mark = val; | |
381 | } | |
382 | static inline void | |
383 | pset_name (struct Lisp_Process *p, Lisp_Object val) | |
384 | { | |
385 | p->name = val; | |
386 | } | |
387 | static inline void | |
388 | pset_plist (struct Lisp_Process *p, Lisp_Object val) | |
389 | { | |
390 | p->plist = val; | |
391 | } | |
392 | static inline void | |
393 | pset_sentinel (struct Lisp_Process *p, Lisp_Object val) | |
394 | { | |
395 | p->sentinel = val; | |
396 | } | |
397 | static inline void | |
398 | pset_status (struct Lisp_Process *p, Lisp_Object val) | |
399 | { | |
400 | p->status = val; | |
401 | } | |
402 | static inline void | |
403 | pset_tty_name (struct Lisp_Process *p, Lisp_Object val) | |
404 | { | |
405 | p->tty_name = val; | |
406 | } | |
407 | static inline void | |
408 | pset_type (struct Lisp_Process *p, Lisp_Object val) | |
409 | { | |
410 | p->type = val; | |
411 | } | |
412 | static inline void | |
413 | pset_write_queue (struct Lisp_Process *p, Lisp_Object val) | |
414 | { | |
415 | p->write_queue = val; | |
416 | } | |
417 | ||
d0d6b7c5 | 418 | \f |
3fad2ad2 | 419 | |
40ccffa6 | 420 | static struct fd_callback_data |
3fad2ad2 J |
421 | { |
422 | fd_callback func; | |
423 | void *data; | |
424 | #define FOR_READ 1 | |
425 | #define FOR_WRITE 2 | |
426 | int condition; /* mask of the defines above. */ | |
427 | } fd_callback_info[MAXDESC]; | |
428 | ||
429 | ||
430 | /* Add a file descriptor FD to be monitored for when read is possible. | |
431 | When read is possible, call FUNC with argument DATA. */ | |
432 | ||
433 | void | |
434 | add_read_fd (int fd, fd_callback func, void *data) | |
435 | { | |
a54e2c05 | 436 | eassert (fd < MAXDESC); |
3fad2ad2 J |
437 | add_keyboard_wait_descriptor (fd); |
438 | ||
439 | fd_callback_info[fd].func = func; | |
440 | fd_callback_info[fd].data = data; | |
441 | fd_callback_info[fd].condition |= FOR_READ; | |
442 | } | |
443 | ||
444 | /* Stop monitoring file descriptor FD for when read is possible. */ | |
445 | ||
446 | void | |
447 | delete_read_fd (int fd) | |
448 | { | |
a54e2c05 | 449 | eassert (fd < MAXDESC); |
3fad2ad2 J |
450 | delete_keyboard_wait_descriptor (fd); |
451 | ||
452 | fd_callback_info[fd].condition &= ~FOR_READ; | |
453 | if (fd_callback_info[fd].condition == 0) | |
454 | { | |
455 | fd_callback_info[fd].func = 0; | |
456 | fd_callback_info[fd].data = 0; | |
457 | } | |
458 | } | |
459 | ||
460 | /* Add a file descriptor FD to be monitored for when write is possible. | |
461 | When write is possible, call FUNC with argument DATA. */ | |
462 | ||
463 | void | |
464 | add_write_fd (int fd, fd_callback func, void *data) | |
465 | { | |
a54e2c05 | 466 | eassert (fd < MAXDESC); |
3fad2ad2 J |
467 | FD_SET (fd, &write_mask); |
468 | if (fd > max_input_desc) | |
469 | max_input_desc = fd; | |
470 | ||
471 | fd_callback_info[fd].func = func; | |
472 | fd_callback_info[fd].data = data; | |
473 | fd_callback_info[fd].condition |= FOR_WRITE; | |
474 | } | |
475 | ||
476 | /* Stop monitoring file descriptor FD for when write is possible. */ | |
477 | ||
478 | void | |
479 | delete_write_fd (int fd) | |
480 | { | |
481 | int lim = max_input_desc; | |
482 | ||
a54e2c05 | 483 | eassert (fd < MAXDESC); |
3fad2ad2 J |
484 | FD_CLR (fd, &write_mask); |
485 | fd_callback_info[fd].condition &= ~FOR_WRITE; | |
486 | if (fd_callback_info[fd].condition == 0) | |
487 | { | |
488 | fd_callback_info[fd].func = 0; | |
489 | fd_callback_info[fd].data = 0; | |
490 | ||
491 | if (fd == max_input_desc) | |
492 | for (fd = lim; fd >= 0; fd--) | |
493 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) | |
494 | { | |
495 | max_input_desc = fd; | |
496 | break; | |
497 | } | |
51b59d79 | 498 | |
3fad2ad2 J |
499 | } |
500 | } | |
501 | ||
502 | \f | |
d0d6b7c5 JB |
503 | /* Compute the Lisp form of the process status, p->status, from |
504 | the numeric status that was returned by `wait'. */ | |
505 | ||
bba104c1 | 506 | static Lisp_Object status_convert (int); |
f9738840 | 507 | |
ff6daed3 | 508 | static void |
d3da34e0 | 509 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 510 | { |
6bfd98e7 | 511 | eassert (p->raw_status_new); |
6a09a33b | 512 | pset_status (p, status_convert (p->raw_status)); |
6bfd98e7 | 513 | p->raw_status_new = 0; |
d0d6b7c5 JB |
514 | } |
515 | ||
177c0ea7 | 516 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
517 | the list that we use internally. */ |
518 | ||
ff6daed3 | 519 | static Lisp_Object |
bba104c1 | 520 | status_convert (int w) |
d0d6b7c5 JB |
521 | { |
522 | if (WIFSTOPPED (w)) | |
523 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
524 | else if (WIFEXITED (w)) | |
13294f95 | 525 | return Fcons (Qexit, Fcons (make_number (WEXITSTATUS (w)), |
d0d6b7c5 JB |
526 | WCOREDUMP (w) ? Qt : Qnil)); |
527 | else if (WIFSIGNALED (w)) | |
528 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
529 | WCOREDUMP (w) ? Qt : Qnil)); | |
530 | else | |
531 | return Qrun; | |
532 | } | |
533 | ||
534 | /* Given a status-list, extract the three pieces of information | |
535 | and store them individually through the three pointers. */ | |
536 | ||
ff6daed3 | 537 | static void |
d3da34e0 | 538 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, int *coredump) |
d0d6b7c5 JB |
539 | { |
540 | Lisp_Object tem; | |
541 | ||
bcd69aea | 542 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
543 | { |
544 | *symbol = l; | |
545 | *code = 0; | |
546 | *coredump = 0; | |
547 | } | |
548 | else | |
549 | { | |
70949dac KR |
550 | *symbol = XCAR (l); |
551 | tem = XCDR (l); | |
552 | *code = XFASTINT (XCAR (tem)); | |
553 | tem = XCDR (tem); | |
d0d6b7c5 JB |
554 | *coredump = !NILP (tem); |
555 | } | |
556 | } | |
557 | ||
558 | /* Return a string describing a process status list. */ | |
559 | ||
116c423c | 560 | static Lisp_Object |
d3da34e0 | 561 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 562 | { |
4d2b044c | 563 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
564 | Lisp_Object symbol; |
565 | int code, coredump; | |
566 | Lisp_Object string, string2; | |
567 | ||
568 | decode_status (status, &symbol, &code, &coredump); | |
569 | ||
570 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
571 | { | |
68c45bf0 | 572 | char *signame; |
ca9c0567 | 573 | synchronize_system_messages_locale (); |
68c45bf0 | 574 | signame = strsignal (code); |
b97ad9ea | 575 | if (signame == 0) |
66bd43d1 KH |
576 | string = build_string ("unknown"); |
577 | else | |
578 | { | |
579 | int c1, c2; | |
580 | ||
d7ea76b4 | 581 | string = build_unibyte_string (signame); |
66bd43d1 KH |
582 | if (! NILP (Vlocale_coding_system)) |
583 | string = (code_convert_string_norecord | |
584 | (string, Vlocale_coding_system, 0)); | |
42a5b22f | 585 | c1 = STRING_CHAR (SDATA (string)); |
5da9919f | 586 | c2 = downcase (c1); |
66bd43d1 | 587 | if (c1 != c2) |
4735b74e | 588 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 589 | } |
d0d6b7c5 | 590 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
591 | return concat2 (string, string2); |
592 | } | |
593 | else if (EQ (symbol, Qexit)) | |
594 | { | |
116c423c KS |
595 | if (NETCONN1_P (p)) |
596 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
597 | if (code == 0) |
598 | return build_string ("finished\n"); | |
f2980264 | 599 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 600 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
601 | return concat3 (build_string ("exited abnormally with code "), |
602 | string, string2); | |
d0d6b7c5 | 603 | } |
dd2a17ab KS |
604 | else if (EQ (symbol, Qfailed)) |
605 | { | |
606 | string = Fnumber_to_string (make_number (code)); | |
607 | string2 = build_string ("\n"); | |
e690ca94 KS |
608 | return concat3 (build_string ("failed with code "), |
609 | string, string2); | |
dd2a17ab | 610 | } |
d0d6b7c5 JB |
611 | else |
612 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
613 | } | |
614 | \f | |
615 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 616 | |
9bf58201 DN |
617 | /* The file name of the pty opened by allocate_pty. */ |
618 | static char pty_name[24]; | |
619 | ||
875e6b94 KH |
620 | /* Open an available pty, returning a file descriptor. |
621 | Return -1 on failure. | |
622 | The file name of the terminal corresponding to the pty | |
623 | is left in the variable pty_name. */ | |
624 | ||
ff6daed3 | 625 | static int |
d3da34e0 | 626 | allocate_pty (void) |
d0d6b7c5 | 627 | { |
d0d6b7c5 JB |
628 | int fd; |
629 | ||
630 | #ifdef PTY_ITERATION | |
631 | PTY_ITERATION | |
632 | #else | |
be02381c | 633 | register int c, i; |
d0d6b7c5 JB |
634 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) |
635 | for (i = 0; i < 16; i++) | |
636 | #endif | |
637 | { | |
638 | #ifdef PTY_NAME_SPRINTF | |
639 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
640 | #else |
641 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
642 | #endif /* no PTY_NAME_SPRINTF */ |
643 | ||
4d7c105e RS |
644 | #ifdef PTY_OPEN |
645 | PTY_OPEN; | |
646 | #else /* no PTY_OPEN */ | |
34967d0f | 647 | { |
34967d0f SM |
648 | { /* Some systems name their pseudoterminals so that there are gaps in |
649 | the usual sequence - for example, on HP9000/S700 systems, there | |
650 | are no pseudoterminals with names ending in 'f'. So we wait for | |
651 | three failures in a row before deciding that we've reached the | |
652 | end of the ptys. */ | |
653 | int failed_count = 0; | |
57048744 | 654 | struct stat stb; |
f3d9532b | 655 | |
34967d0f SM |
656 | if (stat (pty_name, &stb) < 0) |
657 | { | |
658 | failed_count++; | |
659 | if (failed_count >= 3) | |
660 | return -1; | |
661 | } | |
662 | else | |
663 | failed_count = 0; | |
32676c08 | 664 | } |
34967d0f SM |
665 | # ifdef O_NONBLOCK |
666 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
667 | # else | |
668 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
669 | # endif | |
34967d0f | 670 | } |
4d7c105e | 671 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
672 | |
673 | if (fd >= 0) | |
674 | { | |
675 | /* check to make certain that both sides are available | |
676 | this avoids a nasty yet stupid bug in rlogins */ | |
677 | #ifdef PTY_TTY_NAME_SPRINTF | |
678 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 679 | #else |
63136da6 | 680 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 681 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
682 | if (access (pty_name, 6) != 0) |
683 | { | |
68c45bf0 | 684 | emacs_close (fd); |
132d0475 | 685 | # ifndef __sgi |
d0d6b7c5 | 686 | continue; |
34967d0f | 687 | # else |
d0d6b7c5 | 688 | return -1; |
132d0475 | 689 | # endif /* __sgi */ |
d0d6b7c5 | 690 | } |
d0d6b7c5 JB |
691 | setup_pty (fd); |
692 | return fd; | |
693 | } | |
694 | } | |
695 | return -1; | |
696 | } | |
697 | #endif /* HAVE_PTYS */ | |
698 | \f | |
ff6daed3 | 699 | static Lisp_Object |
d3da34e0 | 700 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
701 | { |
702 | register Lisp_Object val, tem, name1; | |
703 | register struct Lisp_Process *p; | |
31c286f7 PE |
704 | char suffix[sizeof "<>" + INT_STRLEN_BOUND (printmax_t)]; |
705 | printmax_t i; | |
d0d6b7c5 | 706 | |
98423852 | 707 | p = allocate_process (); |
62efea5e DA |
708 | /* Initialize Lisp data. Note that allocate_process initializes all |
709 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
6a09a33b PE |
710 | pset_status (p, Qrun); |
711 | pset_mark (p, Fmake_marker ()); | |
d0d6b7c5 | 712 | |
62efea5e DA |
713 | /* Initialize non-Lisp data. Note that allocate_process zeroes out all |
714 | non-Lisp data, so do it only for slots which should not be zero. */ | |
715 | p->infd = -1; | |
716 | p->outfd = -1; | |
6b61353c | 717 | |
8af55556 TZ |
718 | #ifdef HAVE_GNUTLS |
719 | p->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
720 | #endif | |
721 | ||
d0d6b7c5 JB |
722 | /* If name is already in use, modify it until it is unused. */ |
723 | ||
724 | name1 = name; | |
725 | for (i = 1; ; i++) | |
726 | { | |
727 | tem = Fget_process (name1); | |
728 | if (NILP (tem)) break; | |
a8290ec3 | 729 | name1 = concat2 (name, make_formatted_string (suffix, "<%"pMd">", i)); |
d0d6b7c5 JB |
730 | } |
731 | name = name1; | |
6a09a33b | 732 | pset_name (p, name); |
23d6bb9c | 733 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
734 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
735 | return val; | |
736 | } | |
737 | ||
ff6daed3 | 738 | static void |
d3da34e0 | 739 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
740 | { |
741 | register Lisp_Object pair; | |
742 | ||
743 | pair = Frassq (proc, Vprocess_alist); | |
744 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
745 | |
746 | deactivate_process (proc); | |
747 | } | |
03f04413 | 748 | |
d0d6b7c5 JB |
749 | \f |
750 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 751 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 752 | (Lisp_Object object) |
d0d6b7c5 | 753 | { |
4ee3e309 | 754 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
755 | } |
756 | ||
757 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 758 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 759 | (register Lisp_Object name) |
d0d6b7c5 | 760 | { |
bcd69aea | 761 | if (PROCESSP (name)) |
d0d6b7c5 | 762 | return name; |
b7826503 | 763 | CHECK_STRING (name); |
d0d6b7c5 JB |
764 | return Fcdr (Fassoc (name, Vprocess_alist)); |
765 | } | |
766 | ||
ebb9e16f JB |
767 | /* This is how commands for the user decode process arguments. It |
768 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
769 | Buffers denote the first process in the buffer, and nil denotes the | |
770 | current buffer. */ | |
d0d6b7c5 | 771 | |
77b221b1 | 772 | static Lisp_Object |
d3da34e0 | 773 | get_process (register Lisp_Object name) |
d0d6b7c5 | 774 | { |
1619761d KH |
775 | register Lisp_Object proc, obj; |
776 | if (STRINGP (name)) | |
777 | { | |
778 | obj = Fget_process (name); | |
779 | if (NILP (obj)) | |
780 | obj = Fget_buffer (name); | |
781 | if (NILP (obj)) | |
d5db4077 | 782 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
783 | } |
784 | else if (NILP (name)) | |
785 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 786 | else |
1619761d KH |
787 | obj = name; |
788 | ||
789 | /* Now obj should be either a buffer object or a process object. | |
790 | */ | |
791 | if (BUFFERP (obj)) | |
d0d6b7c5 | 792 | { |
1619761d | 793 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 794 | if (NILP (proc)) |
4b4deea2 | 795 | error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj), name))); |
d0d6b7c5 | 796 | } |
d0d6b7c5 | 797 | else |
1619761d | 798 | { |
b7826503 | 799 | CHECK_PROCESS (obj); |
1619761d KH |
800 | proc = obj; |
801 | } | |
802 | return proc; | |
d0d6b7c5 JB |
803 | } |
804 | ||
a5cfdda8 KS |
805 | |
806 | #ifdef SIGCHLD | |
807 | /* Fdelete_process promises to immediately forget about the process, but in | |
808 | reality, Emacs needs to remember those processes until they have been | |
20ef56db | 809 | treated by the SIGCHLD handler; otherwise this handler would consider the |
a5cfdda8 KS |
810 | process as being synchronous and say that the synchronous process is |
811 | dead. */ | |
812 | static Lisp_Object deleted_pid_list; | |
813 | #endif | |
814 | ||
d0d6b7c5 | 815 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
816 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
817 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
818 | nil, indicating the current buffer's process. */) | |
5842a27b | 819 | (register Lisp_Object process) |
d0d6b7c5 | 820 | { |
ff6daed3 KS |
821 | register struct Lisp_Process *p; |
822 | ||
4ee3e309 | 823 | process = get_process (process); |
ff6daed3 KS |
824 | p = XPROCESS (process); |
825 | ||
6bfd98e7 | 826 | p->raw_status_new = 0; |
d888760c | 827 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 828 | { |
6a09a33b | 829 | pset_status (p, Fcons (Qexit, Fcons (make_number (0), Qnil))); |
60f0fb11 | 830 | p->tick = ++process_tick; |
ff6daed3 | 831 | status_notify (p); |
e42bdf01 | 832 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 833 | } |
60f0fb11 | 834 | else if (p->infd >= 0) |
d0d6b7c5 | 835 | { |
a5cfdda8 KS |
836 | #ifdef SIGCHLD |
837 | Lisp_Object symbol; | |
d311d28c | 838 | pid_t pid = p->pid; |
a5cfdda8 KS |
839 | |
840 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 841 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
842 | /* GC treated elements set to nil. */ |
843 | Fdelq (Qnil, deleted_pid_list)); | |
844 | /* If the process has already signaled, remove it from the list. */ | |
845 | if (p->raw_status_new) | |
846 | update_status (p); | |
4d2b044c DA |
847 | symbol = p->status; |
848 | if (CONSP (p->status)) | |
849 | symbol = XCAR (p->status); | |
a5cfdda8 | 850 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) |
29ed4d51 CY |
851 | deleted_pid_list |
852 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
853 | else |
854 | #endif | |
855 | { | |
856 | Fkill_process (process, Qnil); | |
20ef56db PE |
857 | /* Do this now, since remove_process will make the |
858 | SIGCHLD handler do nothing. */ | |
6a09a33b | 859 | pset_status (p, Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil))); |
60f0fb11 | 860 | p->tick = ++process_tick; |
a5cfdda8 | 861 | status_notify (p); |
e42bdf01 | 862 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 863 | } |
d0d6b7c5 | 864 | } |
4ee3e309 | 865 | remove_process (process); |
d0d6b7c5 JB |
866 | return Qnil; |
867 | } | |
868 | \f | |
869 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
870 | doc: /* Return the status of PROCESS. |
871 | The returned value is one of the following symbols: | |
872 | run -- for a process that is running. | |
873 | stop -- for a process stopped but continuable. | |
874 | exit -- for a process that has exited. | |
875 | signal -- for a process that has got a fatal signal. | |
876 | open -- for a network stream connection that is open. | |
e690ca94 | 877 | listen -- for a network stream server that is listening. |
fdb82f93 | 878 | closed -- for a network stream connection that is closed. |
e4984112 KS |
879 | connect -- when waiting for a non-blocking connection to complete. |
880 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
881 | nil -- if arg is a process name and no such process exists. |
882 | PROCESS may be a process, a buffer, the name of a process, or | |
883 | nil, indicating the current buffer's process. */) | |
5842a27b | 884 | (register Lisp_Object process) |
d0d6b7c5 JB |
885 | { |
886 | register struct Lisp_Process *p; | |
887 | register Lisp_Object status; | |
343f4114 | 888 | |
4ee3e309 EN |
889 | if (STRINGP (process)) |
890 | process = Fget_process (process); | |
343f4114 | 891 | else |
4ee3e309 | 892 | process = get_process (process); |
343f4114 | 893 | |
4ee3e309 EN |
894 | if (NILP (process)) |
895 | return process; | |
343f4114 | 896 | |
4ee3e309 | 897 | p = XPROCESS (process); |
6bfd98e7 | 898 | if (p->raw_status_new) |
d0d6b7c5 | 899 | update_status (p); |
4d2b044c | 900 | status = p->status; |
bcd69aea | 901 | if (CONSP (status)) |
70949dac | 902 | status = XCAR (status); |
d888760c | 903 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 904 | { |
e690ca94 | 905 | if (EQ (status, Qexit)) |
d0d6b7c5 | 906 | status = Qclosed; |
4d2b044c | 907 | else if (EQ (p->command, Qt)) |
e690ca94 KS |
908 | status = Qstop; |
909 | else if (EQ (status, Qrun)) | |
910 | status = Qopen; | |
d0d6b7c5 JB |
911 | } |
912 | return status; | |
913 | } | |
914 | ||
915 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
916 | 1, 1, 0, | |
fdb82f93 PJ |
917 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
918 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 919 | (register Lisp_Object process) |
d0d6b7c5 | 920 | { |
b7826503 | 921 | CHECK_PROCESS (process); |
6bfd98e7 | 922 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 | 923 | update_status (XPROCESS (process)); |
4d2b044c DA |
924 | if (CONSP (XPROCESS (process)->status)) |
925 | return XCAR (XCDR (XPROCESS (process)->status)); | |
d0d6b7c5 JB |
926 | return make_number (0); |
927 | } | |
928 | ||
929 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 930 | doc: /* Return the process id of PROCESS. |
f3d9532b | 931 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 932 | For a network connection, this value is nil. */) |
5842a27b | 933 | (register Lisp_Object process) |
d0d6b7c5 | 934 | { |
d311d28c | 935 | pid_t pid; |
d30fe779 | 936 | |
b7826503 | 937 | CHECK_PROCESS (process); |
d30fe779 EZ |
938 | pid = XPROCESS (process)->pid; |
939 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
940 | } |
941 | ||
942 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
943 | doc: /* Return the name of PROCESS, as a string. |
944 | This is the name of the program invoked in PROCESS, | |
945 | possibly modified to make it unique among process names. */) | |
5842a27b | 946 | (register Lisp_Object process) |
d0d6b7c5 | 947 | { |
b7826503 | 948 | CHECK_PROCESS (process); |
4d2b044c | 949 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
950 | } |
951 | ||
952 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
953 | doc: /* Return the command that was executed to start PROCESS. |
954 | This is a list of strings, the first string being the program executed | |
955 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
956 | For a network or serial process, this is nil (process is running) or t |
957 | \(process is stopped). */) | |
5842a27b | 958 | (register Lisp_Object process) |
d0d6b7c5 | 959 | { |
b7826503 | 960 | CHECK_PROCESS (process); |
4d2b044c | 961 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
962 | } |
963 | ||
3b9a3dfa | 964 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
965 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
966 | This is the terminal that the process itself reads and writes on, | |
967 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 968 | (register Lisp_Object process) |
3b9a3dfa | 969 | { |
b7826503 | 970 | CHECK_PROCESS (process); |
4d2b044c | 971 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
972 | } |
973 | ||
d0d6b7c5 | 974 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 | 975 | 2, 2, 0, |
76147d94 DD |
976 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). |
977 | Return BUFFER. */) | |
5842a27b | 978 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 979 | { |
e690ca94 KS |
980 | struct Lisp_Process *p; |
981 | ||
b7826503 | 982 | CHECK_PROCESS (process); |
d0d6b7c5 | 983 | if (!NILP (buffer)) |
b7826503 | 984 | CHECK_BUFFER (buffer); |
e690ca94 | 985 | p = XPROCESS (process); |
6a09a33b | 986 | pset_buffer (p, buffer); |
d888760c | 987 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 988 | pset_childp (p, Fplist_put (p->childp, QCbuffer, buffer)); |
03f04413 | 989 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
990 | return buffer; |
991 | } | |
992 | ||
993 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
994 | 1, 1, 0, |
995 | doc: /* Return the buffer PROCESS is associated with. | |
996 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 997 | (register Lisp_Object process) |
d0d6b7c5 | 998 | { |
b7826503 | 999 | CHECK_PROCESS (process); |
4d2b044c | 1000 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
1001 | } |
1002 | ||
1003 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
1004 | 1, 1, 0, |
1005 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 1006 | (register Lisp_Object process) |
d0d6b7c5 | 1007 | { |
b7826503 | 1008 | CHECK_PROCESS (process); |
4d2b044c | 1009 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
1010 | } |
1011 | ||
1012 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
1013 | 2, 2, 0, |
1014 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 1015 | A value of t means stop accepting output from the process. |
3452df9e KS |
1016 | |
1017 | When a process has a filter, its buffer is not used for output. | |
1018 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 1019 | passed to the filter. |
3452df9e | 1020 | |
fdb82f93 | 1021 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
1022 | The string argument is normally a multibyte string, except: |
1023 | - if the process' input coding system is no-conversion or raw-text, | |
1024 | it is a unibyte string (the non-converted input), or else | |
1025 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
1026 | string (the result of converting the decoded input multibyte | |
1027 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 1028 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 1029 | { |
471f86b9 | 1030 | struct Lisp_Process *p; |
177c0ea7 | 1031 | |
b7826503 | 1032 | CHECK_PROCESS (process); |
471f86b9 GM |
1033 | p = XPROCESS (process); |
1034 | ||
1035 | /* Don't signal an error if the process' input file descriptor | |
1036 | is closed. This could make debugging Lisp more difficult, | |
1037 | for example when doing something like | |
1038 | ||
1039 | (setq process (start-process ...)) | |
1040 | (debug) | |
1041 | (set-process-filter process ...) */ | |
177c0ea7 | 1042 | |
60f0fb11 | 1043 | if (p->infd >= 0) |
a69281ff | 1044 | { |
4d2b044c | 1045 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 1046 | { |
60f0fb11 SM |
1047 | FD_CLR (p->infd, &input_wait_mask); |
1048 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1049 | } |
4d2b044c | 1050 | else if (EQ (p->filter, Qt) |
d888760c | 1051 | /* Network or serial process not stopped: */ |
4d2b044c | 1052 | && !EQ (p->command, Qt)) |
471f86b9 | 1053 | { |
60f0fb11 SM |
1054 | FD_SET (p->infd, &input_wait_mask); |
1055 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1056 | } |
a69281ff | 1057 | } |
177c0ea7 | 1058 | |
6a09a33b | 1059 | pset_filter (p, filter); |
d888760c | 1060 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1061 | pset_childp (p, Fplist_put (p->childp, QCfilter, filter)); |
03f04413 | 1062 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1063 | return filter; |
1064 | } | |
1065 | ||
1066 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1067 | 1, 1, 0, |
1068 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1069 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 1070 | (register Lisp_Object process) |
d0d6b7c5 | 1071 | { |
b7826503 | 1072 | CHECK_PROCESS (process); |
4d2b044c | 1073 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1074 | } |
1075 | ||
1076 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1077 | 2, 2, 0, |
1078 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1079 | The sentinel is called as a function when the process changes state. | |
1080 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 1081 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1082 | { |
6b61353c KH |
1083 | struct Lisp_Process *p; |
1084 | ||
b7826503 | 1085 | CHECK_PROCESS (process); |
6b61353c KH |
1086 | p = XPROCESS (process); |
1087 | ||
6a09a33b | 1088 | pset_sentinel (p, sentinel); |
d888760c | 1089 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1090 | pset_childp (p, Fplist_put (p->childp, QCsentinel, sentinel)); |
d0d6b7c5 JB |
1091 | return sentinel; |
1092 | } | |
1093 | ||
1094 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1095 | 1, 1, 0, |
1096 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1097 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 1098 | (register Lisp_Object process) |
d0d6b7c5 | 1099 | { |
b7826503 | 1100 | CHECK_PROCESS (process); |
4d2b044c | 1101 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1102 | } |
1103 | ||
396df322 | 1104 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1105 | Sset_process_window_size, 3, 3, 0, |
1106 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1107 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1108 | { |
b7826503 | 1109 | CHECK_PROCESS (process); |
af5a5a98 AS |
1110 | CHECK_RANGED_INTEGER (height, 0, INT_MAX); |
1111 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); | |
177c0ea7 | 1112 | |
60f0fb11 SM |
1113 | if (XPROCESS (process)->infd < 0 |
1114 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1115 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1116 | return Qnil; |
1117 | else | |
1118 | return Qt; | |
1119 | } | |
1120 | ||
52a1b894 | 1121 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1122 | Fset_process_inherit_coding_system_flag, |
1123 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1124 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1125 | If the second argument FLAG is non-nil, then the variable | |
1126 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1127 | will be bound to the value of the coding system used to decode | |
1128 | the process output. | |
1129 | ||
1130 | This is useful when the coding system specified for the process buffer | |
1131 | leaves either the character code conversion or the end-of-line conversion | |
1132 | unspecified, or if the coding system used to decode the process output | |
1133 | is more appropriate for saving the process buffer. | |
1134 | ||
1135 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1136 | starting the process is an alternative way of setting the inherit flag | |
016a35df GM |
1137 | for the process which will run. |
1138 | ||
1139 | This function returns FLAG. */) | |
5842a27b | 1140 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1141 | { |
b7826503 | 1142 | CHECK_PROCESS (process); |
60f0fb11 | 1143 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1144 | return flag; |
1145 | } | |
1146 | ||
e690ca94 KS |
1147 | DEFUN ("set-process-query-on-exit-flag", |
1148 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1149 | 2, 2, 0, | |
1150 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1151 | If the second argument FLAG is non-nil, Emacs will query the user before |
016a35df GM |
1152 | exiting or killing a buffer if PROCESS is running. This function |
1153 | returns FLAG. */) | |
5842a27b | 1154 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1155 | { |
b7826503 | 1156 | CHECK_PROCESS (process); |
60f0fb11 | 1157 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1158 | return flag; |
d0d6b7c5 | 1159 | } |
312c9964 | 1160 | |
e690ca94 KS |
1161 | DEFUN ("process-query-on-exit-flag", |
1162 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1163 | 1, 1, 0, |
f3d9532b | 1164 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1165 | (register Lisp_Object process) |
de282a05 | 1166 | { |
b7826503 | 1167 | CHECK_PROCESS (process); |
60f0fb11 | 1168 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1169 | } |
1170 | ||
e690ca94 KS |
1171 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, |
1172 | 1, 2, 0, | |
1173 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1174 | For a network or serial connection, the value depends on the optional |
1175 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1176 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1177 | connection. If KEY is t, the complete contact information for the | |
1178 | connection is returned, else the specific value for the keyword KEY is | |
1179 | returned. See `make-network-process' or `make-serial-process' for a | |
1180 | list of keywords. */) | |
5842a27b | 1181 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1182 | { |
1183 | Lisp_Object contact; | |
1184 | ||
1185 | CHECK_PROCESS (process); | |
4d2b044c | 1186 | contact = XPROCESS (process)->childp; |
e690ca94 KS |
1187 | |
1188 | #ifdef DATAGRAM_SOCKETS | |
1189 | if (DATAGRAM_CONN_P (process) | |
1190 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1191 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1192 | Fprocess_datagram_address (process)); |
1193 | #endif | |
1194 | ||
d888760c | 1195 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1196 | return contact; |
d888760c | 1197 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1198 | return Fcons (Fplist_get (contact, QChost), |
1199 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1200 | if (NILP (key) && SERIALCONN_P (process)) |
1201 | return Fcons (Fplist_get (contact, QCport), | |
1202 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1203 | return Fplist_get (contact, key); |
de282a05 RS |
1204 | } |
1205 | ||
faa7db08 KS |
1206 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1207 | 1, 1, 0, | |
1208 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1209 | (register Lisp_Object process) |
365aee82 | 1210 | { |
ac4a7584 | 1211 | CHECK_PROCESS (process); |
4d2b044c | 1212 | return XPROCESS (process)->plist; |
ac4a7584 | 1213 | } |
365aee82 | 1214 | |
faa7db08 KS |
1215 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1216 | 2, 2, 0, | |
26a086c6 | 1217 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1218 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1219 | { |
365aee82 | 1220 | CHECK_PROCESS (process); |
faa7db08 | 1221 | CHECK_LIST (plist); |
365aee82 | 1222 | |
6a09a33b | 1223 | pset_plist (XPROCESS (process), plist); |
26a086c6 | 1224 | return plist; |
365aee82 KS |
1225 | } |
1226 | ||
312c9964 RS |
1227 | #if 0 /* Turned off because we don't currently record this info |
1228 | in the process. Perhaps add it. */ | |
1229 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1230 | doc: /* Return the connection type of PROCESS. |
1231 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1232 | a socket connection. */) | |
5842a27b | 1233 | (Lisp_Object process) |
312c9964 | 1234 | { |
4d2b044c | 1235 | return XPROCESS (process)->type; |
312c9964 RS |
1236 | } |
1237 | #endif | |
2a7bb882 | 1238 | |
d888760c GM |
1239 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1240 | doc: /* Return the connection type of PROCESS. | |
1241 | The value is either the symbol `real', `network', or `serial'. | |
1242 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1243 | nil, indicating the current buffer's process. */) | |
5842a27b | 1244 | (Lisp_Object process) |
d888760c GM |
1245 | { |
1246 | Lisp_Object proc; | |
1247 | proc = get_process (process); | |
4d2b044c | 1248 | return XPROCESS (proc)->type; |
d888760c | 1249 | } |
991234f0 | 1250 | |
991234f0 | 1251 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1252 | 1, 2, 0, |
991234f0 | 1253 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1254 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1255 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1256 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1257 | number in the string, even when present in ADDRESS. |
1258 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1259 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1260 | { |
991234f0 KS |
1261 | if (NILP (address)) |
1262 | return Qnil; | |
1263 | ||
1264 | if (STRINGP (address)) /* AF_LOCAL */ | |
1265 | return address; | |
1266 | ||
e1652a86 | 1267 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1268 | { |
1269 | register struct Lisp_Vector *p = XVECTOR (address); | |
d311d28c | 1270 | ptrdiff_t size = p->header.size; |
ded83665 | 1271 | Lisp_Object args[10]; |
0dccee41 | 1272 | int nargs, i; |
991234f0 | 1273 | |
eab3844f | 1274 | if (size == 4 || (size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1275 | { |
1276 | args[0] = build_string ("%d.%d.%d.%d"); | |
1277 | nargs = 4; | |
1278 | } | |
eab3844f | 1279 | else if (size == 5) |
0dccee41 KS |
1280 | { |
1281 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1282 | nargs = 5; | |
1283 | } | |
eab3844f | 1284 | else if (size == 8 || (size == 9 && !NILP (omit_port))) |
e1652a86 KS |
1285 | { |
1286 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1287 | nargs = 8; | |
1288 | } | |
eab3844f | 1289 | else if (size == 9) |
e1652a86 KS |
1290 | { |
1291 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1292 | nargs = 9; | |
1293 | } | |
0dccee41 | 1294 | else |
991234f0 KS |
1295 | return Qnil; |
1296 | ||
0dccee41 | 1297 | for (i = 0; i < nargs; i++) |
cbf23adb | 1298 | { |
d311d28c | 1299 | if (! RANGED_INTEGERP (0, p->contents[i], 65535)) |
cbf23adb JB |
1300 | return Qnil; |
1301 | ||
1302 | if (nargs <= 5 /* IPv4 */ | |
1303 | && i < 4 /* host, not port */ | |
d311d28c | 1304 | && XINT (p->contents[i]) > 255) |
cbf23adb JB |
1305 | return Qnil; |
1306 | ||
1307 | args[i+1] = p->contents[i]; | |
1308 | } | |
1309 | ||
0dccee41 | 1310 | return Fformat (nargs+1, args); |
991234f0 KS |
1311 | } |
1312 | ||
1313 | if (CONSP (address)) | |
1314 | { | |
1315 | Lisp_Object args[2]; | |
1316 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1317 | args[1] = Fcar (address); |
991234f0 | 1318 | return Fformat (2, args); |
991234f0 KS |
1319 | } |
1320 | ||
1321 | return Qnil; | |
1322 | } | |
d0d6b7c5 JB |
1323 | |
1324 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1325 | doc: /* Return a list of all processes. */) |
5842a27b | 1326 | (void) |
d0d6b7c5 JB |
1327 | { |
1328 | return Fmapcar (Qcdr, Vprocess_alist); | |
1329 | } | |
1330 | \f | |
b0310da4 JB |
1331 | /* Starting asynchronous inferior processes. */ |
1332 | ||
d3da34e0 | 1333 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1334 | |
d0d6b7c5 | 1335 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1336 | doc: /* Start a program in a subprocess. Return the process object for it. |
1337 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1338 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1339 | |
1340 | Process output (both standard output and standard error streams) goes | |
1341 | at end of BUFFER, unless you specify an output stream or filter | |
1342 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1343 | this process is not associated with any buffer. |
1344 | ||
6b8bc570 CY |
1345 | PROGRAM is the program file name. It is searched for in `exec-path' |
1346 | (which see). If nil, just associate a pty with the buffer. Remaining | |
1347 | arguments are strings to give program as arguments. | |
320aebc9 | 1348 | |
4b6c5eee EZ |
1349 | If you want to separate standard output from standard error, invoke |
1350 | the command through a shell and redirect one of them using the shell | |
1351 | syntax. | |
320aebc9 | 1352 | |
3ecdf100 | 1353 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
f66c7cf8 | 1354 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 | 1355 | { |
1e30af70 | 1356 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1357 | register unsigned char **new_argv; |
f66c7cf8 | 1358 | ptrdiff_t i; |
d311d28c | 1359 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1360 | |
1361 | buffer = args[1]; | |
1362 | if (!NILP (buffer)) | |
1363 | buffer = Fget_buffer_create (buffer); | |
1364 | ||
1e30af70 JB |
1365 | /* Make sure that the child will be able to chdir to the current |
1366 | buffer's current directory, or its unhandled equivalent. We | |
1367 | can't just have the child check for an error when it does the | |
1368 | chdir, since it's in a vfork. | |
1369 | ||
1370 | We have to GCPRO around this because Fexpand_file_name and | |
1371 | Funhandled_file_name_directory might call a file name handling | |
1372 | function. The argument list is protected by the caller, so all | |
1373 | we really have to worry about is buffer. */ | |
1374 | { | |
1375 | struct gcpro gcpro1, gcpro2; | |
1376 | ||
4b4deea2 | 1377 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1378 | |
1379 | GCPRO2 (buffer, current_dir); | |
1380 | ||
ca319910 SM |
1381 | current_dir = Funhandled_file_name_directory (current_dir); |
1382 | if (NILP (current_dir)) | |
1383 | /* If the file name handler says that current_dir is unreachable, use | |
1384 | a sensible default. */ | |
1385 | current_dir = build_string ("~/"); | |
1386 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1387 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1388 | report_file_error ("Setting current directory", | |
4b4deea2 | 1389 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1390 | |
1391 | UNGCPRO; | |
1392 | } | |
1393 | ||
d0d6b7c5 | 1394 | name = args[0]; |
b7826503 | 1395 | CHECK_STRING (name); |
d0d6b7c5 JB |
1396 | |
1397 | program = args[2]; | |
1398 | ||
850d0752 NR |
1399 | if (!NILP (program)) |
1400 | CHECK_STRING (program); | |
d0d6b7c5 | 1401 | |
d0d6b7c5 | 1402 | proc = make_process (name); |
b0310da4 JB |
1403 | /* If an error occurs and we can't start the process, we want to |
1404 | remove it from the process list. This means that each error | |
1405 | check in create_process doesn't need to call remove_process | |
1406 | itself; it's all taken care of here. */ | |
1407 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 | 1408 | |
6a09a33b PE |
1409 | pset_childp (XPROCESS (proc), Qt); |
1410 | pset_plist (XPROCESS (proc), Qnil); | |
1411 | pset_type (XPROCESS (proc), Qreal); | |
1412 | pset_buffer (XPROCESS (proc), buffer); | |
1413 | pset_sentinel (XPROCESS (proc), Qnil); | |
1414 | pset_filter (XPROCESS (proc), Qnil); | |
1415 | pset_command (XPROCESS (proc), Flist (nargs - 2, args + 2)); | |
d0d6b7c5 | 1416 | |
8af55556 TZ |
1417 | #ifdef HAVE_GNUTLS |
1418 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1419 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
6a09a33b | 1420 | pset_gnutls_cred_type (XPROCESS (proc), Qnil); |
8af55556 TZ |
1421 | #endif |
1422 | ||
6b61353c | 1423 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1424 | XPROCESS (proc)->adaptive_read_buffering |
1425 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1426 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1427 | #endif |
1428 | ||
7af71e17 | 1429 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1430 | if (BUFFERP (buffer)) |
4d2b044c | 1431 | set_marker_both (XPROCESS (proc)->mark, buffer, |
d8a2934e RS |
1432 | BUF_ZV (XBUFFER (buffer)), |
1433 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1434 | |
67918941 | 1435 | { |
d5d4ae71 KH |
1436 | /* Decide coding systems for communicating with the process. Here |
1437 | we don't setup the structure coding_system nor pay attention to | |
1438 | unibyte mode. They are done in create_process. */ | |
1439 | ||
67918941 RS |
1440 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1441 | Lisp_Object coding_systems = Qt; | |
1442 | Lisp_Object val, *args2; | |
a4a37e65 | 1443 | struct gcpro gcpro1, gcpro2; |
67918941 | 1444 | |
d5d4ae71 KH |
1445 | val = Vcoding_system_for_read; |
1446 | if (NILP (val)) | |
67918941 | 1447 | { |
38182d90 | 1448 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1449 | args2[0] = Qstart_process; |
1450 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1451 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1452 | if (!NILP (program)) |
1453 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1454 | UNGCPRO; |
1455 | if (CONSP (coding_systems)) | |
70949dac | 1456 | val = XCAR (coding_systems); |
67918941 | 1457 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1458 | val = XCAR (Vdefault_process_coding_system); |
67918941 | 1459 | } |
6a09a33b | 1460 | pset_decode_coding_system (XPROCESS (proc), val); |
67918941 | 1461 | |
d5d4ae71 KH |
1462 | val = Vcoding_system_for_write; |
1463 | if (NILP (val)) | |
67918941 RS |
1464 | { |
1465 | if (EQ (coding_systems, Qt)) | |
1466 | { | |
38182d90 | 1467 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1468 | args2[0] = Qstart_process; |
1469 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1470 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1471 | if (!NILP (program)) |
1472 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1473 | UNGCPRO; |
1474 | } | |
1475 | if (CONSP (coding_systems)) | |
70949dac | 1476 | val = XCDR (coding_systems); |
67918941 | 1477 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1478 | val = XCDR (Vdefault_process_coding_system); |
67918941 | 1479 | } |
6a09a33b | 1480 | pset_encode_coding_system (XPROCESS (proc), val); |
e1dbe924 | 1481 | /* Note: At this moment, the above coding system may leave |
fcaf8878 KH |
1482 | text-conversion or eol-conversion unspecified. They will be |
1483 | decided after we read output from the process and decode it by | |
1484 | some coding system, or just before we actually send a text to | |
1485 | the process. */ | |
67918941 | 1486 | } |
0fa1789e | 1487 | |
a4a37e65 | 1488 | |
6a09a33b | 1489 | pset_decoding_buf (XPROCESS (proc), empty_unibyte_string); |
850d0752 | 1490 | XPROCESS (proc)->decoding_carryover = 0; |
6a09a33b | 1491 | pset_encoding_buf (XPROCESS (proc), empty_unibyte_string); |
ed30cf85 | 1492 | |
850d0752 NR |
1493 | XPROCESS (proc)->inherit_coding_system_flag |
1494 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1495 | |
850d0752 NR |
1496 | if (!NILP (program)) |
1497 | { | |
1498 | /* If program file name is not absolute, search our path for it. | |
1499 | Put the name we will really use in TEM. */ | |
1500 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1501 | && !(SCHARS (program) > 1 | |
1502 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1503 | { | |
1504 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1505 | ||
1506 | tem = Qnil; | |
1507 | GCPRO4 (name, program, buffer, current_dir); | |
1508 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1509 | UNGCPRO; | |
1510 | if (NILP (tem)) | |
1511 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1512 | tem = Fexpand_file_name (tem, Qnil); | |
1513 | } | |
1514 | else | |
1515 | { | |
1516 | if (!NILP (Ffile_directory_p (program))) | |
1517 | error ("Specified program for new process is a directory"); | |
1518 | tem = program; | |
1519 | } | |
ed30cf85 | 1520 | |
850d0752 NR |
1521 | /* If program file name starts with /: for quoting a magic name, |
1522 | discard that. */ | |
1523 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1524 | && SREF (tem, 1) == ':') | |
1525 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1526 | |
77bf07e1 | 1527 | { |
fcaf8878 | 1528 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1529 | struct gcpro gcpro1; |
1530 | GCPRO1 (tem); | |
a4a37e65 | 1531 | |
850d0752 NR |
1532 | /* Encode the file name and put it in NEW_ARGV. |
1533 | That's where the child will use it to execute the program. */ | |
1534 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1535 | |
850d0752 NR |
1536 | /* Here we encode arguments by the coding system used for sending |
1537 | data to the process. We don't support using different coding | |
1538 | systems for encoding arguments and for encoding data sent to the | |
1539 | process. */ | |
77bf07e1 | 1540 | |
850d0752 NR |
1541 | for (i = 3; i < nargs; i++) |
1542 | { | |
1543 | tem = Fcons (args[i], tem); | |
1544 | CHECK_STRING (XCAR (tem)); | |
1545 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1546 | { |
1547 | if (NILP (arg_encoding)) | |
1548 | arg_encoding = (complement_process_encoding_system | |
4d2b044c | 1549 | (XPROCESS (proc)->encode_coding_system)); |
fcaf8878 KH |
1550 | XSETCAR (tem, |
1551 | code_convert_string_norecord | |
1552 | (XCAR (tem), arg_encoding, 1)); | |
1553 | } | |
850d0752 | 1554 | } |
a4a37e65 | 1555 | |
850d0752 NR |
1556 | UNGCPRO; |
1557 | } | |
0fa1789e | 1558 | |
850d0752 NR |
1559 | /* Now that everything is encoded we can collect the strings into |
1560 | NEW_ARGV. */ | |
38182d90 | 1561 | new_argv = alloca ((nargs - 1) * sizeof *new_argv); |
850d0752 | 1562 | new_argv[nargs - 2] = 0; |
52a1b894 | 1563 | |
c5101a77 | 1564 | for (i = nargs - 2; i-- != 0; ) |
850d0752 NR |
1565 | { |
1566 | new_argv[i] = SDATA (XCAR (tem)); | |
1567 | tem = XCDR (tem); | |
1568 | } | |
1569 | ||
1570 | create_process (proc, (char **) new_argv, current_dir); | |
1571 | } | |
1572 | else | |
1573 | create_pty (proc); | |
d0d6b7c5 | 1574 | |
b0310da4 | 1575 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1576 | } |
1577 | ||
b0310da4 | 1578 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1579 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1580 | an error and the process wasn't started successfully, so we should |
1581 | remove it from the process list. */ | |
1582 | static Lisp_Object | |
d3da34e0 | 1583 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1584 | { |
bcd69aea | 1585 | if (!PROCESSP (proc)) |
1088b922 | 1586 | emacs_abort (); |
b0310da4 | 1587 | |
2bf26180 GM |
1588 | /* Was PROC started successfully? |
1589 | -2 is used for a pty with no process, eg for gdb. */ | |
1590 | if (XPROCESS (proc)->pid <= 0 && XPROCESS (proc)->pid != -2) | |
b0310da4 JB |
1591 | remove_process (proc); |
1592 | ||
1593 | return Qnil; | |
1594 | } | |
1595 | ||
ff6daed3 | 1596 | static void |
d3da34e0 | 1597 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1598 | { |
30904ab7 | 1599 | /* Nothing to do. */ |
d0d6b7c5 JB |
1600 | } |
1601 | ||
30904ab7 | 1602 | |
40ccffa6 | 1603 | static void |
d3da34e0 | 1604 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1605 | { |
29ed4d51 CY |
1606 | int inchannel, outchannel; |
1607 | pid_t pid; | |
d0d6b7c5 | 1608 | int sv[2]; |
2c4df143 YM |
1609 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1610 | int wait_child_setup[2]; | |
1611 | #endif | |
2fe28299 | 1612 | sigset_t blocked, procmask; |
0dc70c33 KH |
1613 | struct sigaction sigint_action; |
1614 | struct sigaction sigquit_action; | |
c0ad4ea5 | 1615 | struct sigaction sigpipe_action; |
0dc70c33 KH |
1616 | #ifdef AIX |
1617 | struct sigaction sighup_action; | |
1618 | #endif | |
ecd1f654 KH |
1619 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1620 | volatile int forkin, forkout; | |
1621 | volatile int pty_flag = 0; | |
d0d6b7c5 | 1622 | |
d0d6b7c5 JB |
1623 | inchannel = outchannel = -1; |
1624 | ||
1625 | #ifdef HAVE_PTYS | |
fe45da4e | 1626 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1627 | outchannel = inchannel = allocate_pty (); |
1628 | ||
d0d6b7c5 JB |
1629 | if (inchannel >= 0) |
1630 | { | |
2af70a0c RS |
1631 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1632 | /* On most USG systems it does not work to open the pty's tty here, | |
1633 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1634 | #ifdef O_NOCTTY |
1635 | /* Don't let this terminal become our controlling terminal | |
1636 | (in case we don't have one). */ | |
68c45bf0 | 1637 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1638 | #else |
68c45bf0 | 1639 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1640 | #endif |
1641 | if (forkin < 0) | |
1642 | report_file_error ("Opening pty", Qnil); | |
1643 | #else | |
1644 | forkin = forkout = -1; | |
2af70a0c | 1645 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1646 | pty_flag = 1; |
1647 | } | |
1648 | else | |
1649 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1650 | { |
fc14013c KH |
1651 | int tem; |
1652 | tem = pipe (sv); | |
1653 | if (tem < 0) | |
1654 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1655 | inchannel = sv[0]; |
1656 | forkout = sv[1]; | |
fc14013c KH |
1657 | tem = pipe (sv); |
1658 | if (tem < 0) | |
1659 | { | |
68c45bf0 PE |
1660 | emacs_close (inchannel); |
1661 | emacs_close (forkout); | |
fc14013c KH |
1662 | report_file_error ("Creating pipe", Qnil); |
1663 | } | |
d0d6b7c5 JB |
1664 | outchannel = sv[1]; |
1665 | forkin = sv[0]; | |
1666 | } | |
d0d6b7c5 | 1667 | |
2c4df143 YM |
1668 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1669 | { | |
1670 | int tem; | |
1671 | ||
1672 | tem = pipe (wait_child_setup); | |
1673 | if (tem < 0) | |
1674 | report_file_error ("Creating pipe", Qnil); | |
1675 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1676 | if (tem >= 0) | |
1677 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1678 | if (tem < 0) | |
1679 | { | |
1680 | emacs_close (wait_child_setup[0]); | |
1681 | emacs_close (wait_child_setup[1]); | |
1682 | report_file_error ("Setting file descriptor flags", Qnil); | |
1683 | } | |
1684 | } | |
1685 | #endif | |
1686 | ||
d0d6b7c5 JB |
1687 | #ifdef O_NONBLOCK |
1688 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1689 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1690 | #else |
1691 | #ifdef O_NDELAY | |
1692 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1693 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1694 | #endif |
1695 | #endif | |
1696 | ||
1697 | /* Record this as an active process, with its channels. | |
1698 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1699 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1700 | XPROCESS (process)->infd = inchannel; |
1701 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1702 | |
1703 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1704 | It was only used for getting the foreground tty process, so now | |
1705 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1706 | more portable (see USG_SUBTTY_WORKS above). */ | |
1707 | ||
60f0fb11 | 1708 | XPROCESS (process)->pty_flag = pty_flag; |
6a09a33b | 1709 | pset_status (XPROCESS (process), Qrun); |
d0d6b7c5 JB |
1710 | |
1711 | /* Delay interrupts until we have a chance to store | |
1712 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1713 | sigemptyset (&blocked); |
1714 | #ifdef SIGCHLD | |
1715 | sigaddset (&blocked, SIGCHLD); | |
1716 | #endif | |
351e611f | 1717 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1718 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1719 | this sets the parent's signal handlers as well as the child's. | |
1720 | So delay all interrupts whose handlers the child might munge, | |
1721 | and record the current handlers so they can be restored later. */ | |
1722 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1723 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
c0ad4ea5 | 1724 | sigaddset (&blocked, SIGPIPE); sigaction (SIGPIPE, 0, &sigpipe_action); |
0dc70c33 KH |
1725 | #ifdef AIX |
1726 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1727 | #endif | |
351e611f | 1728 | #endif /* HAVE_WORKING_VFORK */ |
123403e4 | 1729 | pthread_sigmask (SIG_BLOCK, &blocked, &procmask); |
d0d6b7c5 | 1730 | |
3081bf8d | 1731 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1732 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1733 | if (inchannel > max_process_desc) |
1734 | max_process_desc = inchannel; | |
1735 | ||
20ef56db | 1736 | /* Until we store the proper pid, enable the SIGCHLD handler |
d0d6b7c5 JB |
1737 | to recognize an unknown pid as standing for this process. |
1738 | It is very important not to let this `marker' value stay | |
1739 | in the table after this function has returned; if it does | |
1740 | it might cause call-process to hang and subsequent asynchronous | |
1741 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1742 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1743 | |
5cf2b69b KH |
1744 | /* This must be called after the above line because it may signal an |
1745 | error. */ | |
1746 | setup_process_coding_systems (process); | |
1747 | ||
ececcbec | 1748 | BLOCK_INPUT; |
177c0ea7 | 1749 | |
d0d6b7c5 JB |
1750 | { |
1751 | /* child_setup must clobber environ on systems with true vfork. | |
1752 | Protect it from permanent change. */ | |
1753 | char **save_environ = environ; | |
12d8b6ab | 1754 | volatile Lisp_Object encoded_current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1755 | |
e98d950b | 1756 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1757 | pid = vfork (); |
1758 | if (pid == 0) | |
e98d950b | 1759 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1760 | { |
1761 | int xforkin = forkin; | |
1762 | int xforkout = forkout; | |
1763 | ||
d0d6b7c5 JB |
1764 | /* Make the pty be the controlling terminal of the process. */ |
1765 | #ifdef HAVE_PTYS | |
1766 | /* First, disconnect its current controlling terminal. */ | |
1767 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1768 | /* We tried doing setsid only if pty_flag, but it caused |
1769 | process_set_signal to fail on SGI when using a pipe. */ | |
1770 | setsid (); | |
ce4c9c90 | 1771 | /* Make the pty's terminal the controlling terminal. */ |
ce8f5a9a | 1772 | if (pty_flag && xforkin >= 0) |
39e9ebcd | 1773 | { |
39e9ebcd RS |
1774 | #ifdef TIOCSCTTY |
1775 | /* We ignore the return value | |
1776 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1777 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1778 | #endif |
39e9ebcd | 1779 | } |
d0d6b7c5 | 1780 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1781 | #ifdef USG |
000ab717 | 1782 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1783 | afterwards. Otherwise, we lose our controlling tty which |
1784 | is set when we open the pty. */ | |
1785 | setpgrp (); | |
1786 | #endif /* USG */ | |
1787 | #endif /* not HAVE_SETSID */ | |
a7ebc409 | 1788 | #if defined (LDISC1) |
9bcf8ec6 KH |
1789 | if (pty_flag && xforkin >= 0) |
1790 | { | |
1791 | struct termios t; | |
1792 | tcgetattr (xforkin, &t); | |
1793 | t.c_lflag = LDISC1; | |
1794 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1795 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1796 | } |
1797 | #else | |
aafadd9f | 1798 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1799 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1800 | { |
1801 | /* Use new line discipline. */ | |
1802 | int ldisc = NTTYDISC; | |
4458f555 | 1803 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1804 | } |
000ab717 | 1805 | #endif |
9bcf8ec6 | 1806 | #endif |
177c0ea7 | 1807 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1808 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1809 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1810 | if (pty_flag) | |
1811 | { | |
177c0ea7 | 1812 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1813 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1814 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
ce8f5a9a AS |
1815 | if (j >= 0) |
1816 | { | |
1817 | ioctl (j, TIOCNOTTY, 0); | |
1818 | emacs_close (j); | |
1819 | } | |
5a570e37 | 1820 | #ifndef USG |
d0d6b7c5 JB |
1821 | /* In order to get a controlling terminal on some versions |
1822 | of BSD, it is necessary to put the process in pgrp 0 | |
1823 | before it opens the terminal. */ | |
99c1aeca | 1824 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1825 | setpgid (0, 0); |
1826 | #else | |
d0d6b7c5 | 1827 | setpgrp (0, 0); |
3ea1d291 | 1828 | #endif |
d0d6b7c5 JB |
1829 | #endif |
1830 | } | |
1831 | #endif /* TIOCNOTTY */ | |
1832 | ||
e39a993c | 1833 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1834 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1835 | conditional on TIOCSPGRP, |
1836 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1837 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1838 | that system does seem to need this code, even though | |
1839 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1840 | /* Now close the pty (if we had it open) and reopen it. |
1841 | This makes the pty the controlling terminal of the subprocess. */ | |
1842 | if (pty_flag) | |
1843 | { | |
99e3d726 | 1844 | |
68c45bf0 PE |
1845 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1846 | would work? */ | |
d0d6b7c5 | 1847 | if (xforkin >= 0) |
68c45bf0 PE |
1848 | emacs_close (xforkin); |
1849 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1850 | |
4aa54ba8 RS |
1851 | if (xforkin < 0) |
1852 | { | |
68c45bf0 PE |
1853 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
1854 | emacs_write (1, pty_name, strlen (pty_name)); | |
1855 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
1856 | _exit (1); |
1857 | } | |
1858 | ||
d0d6b7c5 | 1859 | } |
e39a993c | 1860 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1861 | |
d0d6b7c5 | 1862 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
1863 | if (pty_flag) |
1864 | { | |
1865 | SETUP_SLAVE_PTY; | |
1866 | } | |
d0d6b7c5 JB |
1867 | #endif /* SETUP_SLAVE_PTY */ |
1868 | #ifdef AIX | |
1869 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
1870 | Now reenable it in the child, so it will die when we want it to. */ | |
1871 | if (pty_flag) | |
1872 | signal (SIGHUP, SIG_DFL); | |
1873 | #endif | |
1874 | #endif /* HAVE_PTYS */ | |
1875 | ||
0dc70c33 KH |
1876 | signal (SIGINT, SIG_DFL); |
1877 | signal (SIGQUIT, SIG_DFL); | |
2f9a22e2 | 1878 | /* GConf causes us to ignore SIGPIPE, make sure it is restored |
c0ad4ea5 AS |
1879 | in the child. */ |
1880 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 KH |
1881 | |
1882 | /* Stop blocking signals in the child. */ | |
123403e4 | 1883 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
5e7e1da2 | 1884 | |
ab01d0a8 RS |
1885 | if (pty_flag) |
1886 | child_setup_tty (xforkout); | |
e98d950b RS |
1887 | #ifdef WINDOWSNT |
1888 | pid = child_setup (xforkin, xforkout, xforkout, | |
12d8b6ab | 1889 | new_argv, 1, encoded_current_dir); |
177c0ea7 | 1890 | #else /* not WINDOWSNT */ |
2c4df143 YM |
1891 | #ifdef FD_CLOEXEC |
1892 | emacs_close (wait_child_setup[0]); | |
1893 | #endif | |
d0d6b7c5 | 1894 | child_setup (xforkin, xforkout, xforkout, |
12d8b6ab | 1895 | new_argv, 1, encoded_current_dir); |
e98d950b | 1896 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1897 | } |
1898 | environ = save_environ; | |
1899 | } | |
1900 | ||
ececcbec RS |
1901 | UNBLOCK_INPUT; |
1902 | ||
4a127b3b | 1903 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 1904 | if (pid < 0) |
6311cf58 RS |
1905 | { |
1906 | if (forkin >= 0) | |
68c45bf0 | 1907 | emacs_close (forkin); |
6311cf58 | 1908 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1909 | emacs_close (forkout); |
6311cf58 | 1910 | } |
4a127b3b KH |
1911 | else |
1912 | { | |
1913 | /* vfork succeeded. */ | |
6bfd98e7 | 1914 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 1915 | |
e98d950b | 1916 | #ifdef WINDOWSNT |
4a127b3b | 1917 | register_child (pid, inchannel); |
e98d950b RS |
1918 | #endif /* WINDOWSNT */ |
1919 | ||
4a127b3b KH |
1920 | /* If the subfork execv fails, and it exits, |
1921 | this close hangs. I don't know why. | |
1922 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
1923 | { |
1924 | struct atimer *timer; | |
e9a9ae03 | 1925 | EMACS_TIME offset = make_emacs_time (1, 0); |
177c0ea7 | 1926 | |
30904ab7 | 1927 | stop_polling (); |
30904ab7 | 1928 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); |
177c0ea7 | 1929 | |
30904ab7 GM |
1930 | if (forkin >= 0) |
1931 | emacs_close (forkin); | |
1932 | ||
1933 | cancel_atimer (timer); | |
1934 | start_polling (); | |
1935 | } | |
177c0ea7 | 1936 | |
4a127b3b | 1937 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1938 | emacs_close (forkout); |
d0d6b7c5 | 1939 | |
875e6b94 | 1940 | #ifdef HAVE_PTYS |
4a127b3b | 1941 | if (pty_flag) |
6a09a33b | 1942 | pset_tty_name (XPROCESS (process), build_string (pty_name)); |
4a127b3b | 1943 | else |
875e6b94 | 1944 | #endif |
6a09a33b | 1945 | pset_tty_name (XPROCESS (process), Qnil); |
2c4df143 YM |
1946 | |
1947 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
1948 | /* Wait for child_setup to complete in case that vfork is | |
1949 | actually defined as fork. The descriptor wait_child_setup[1] | |
1950 | of a pipe is closed at the child side either by close-on-exec | |
1951 | on successful execvp or the _exit call in child_setup. */ | |
1952 | { | |
1953 | char dummy; | |
1954 | ||
1955 | emacs_close (wait_child_setup[1]); | |
1956 | emacs_read (wait_child_setup[0], &dummy, 1); | |
1957 | emacs_close (wait_child_setup[0]); | |
1958 | } | |
1959 | #endif | |
4a127b3b | 1960 | } |
3b9a3dfa | 1961 | |
4a127b3b KH |
1962 | /* Restore the signal state whether vfork succeeded or not. |
1963 | (We will signal an error, below, if it failed.) */ | |
351e611f | 1964 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1965 | /* Restore the parent's signal handlers. */ |
1966 | sigaction (SIGINT, &sigint_action, 0); | |
1967 | sigaction (SIGQUIT, &sigquit_action, 0); | |
c0ad4ea5 | 1968 | sigaction (SIGPIPE, &sigpipe_action, 0); |
0dc70c33 KH |
1969 | #ifdef AIX |
1970 | sigaction (SIGHUP, &sighup_action, 0); | |
1971 | #endif | |
351e611f | 1972 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 | 1973 | /* Stop blocking signals in the parent. */ |
123403e4 | 1974 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
4a127b3b KH |
1975 | |
1976 | /* Now generate the error if vfork failed. */ | |
1977 | if (pid < 0) | |
1978 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 1979 | } |
d0d6b7c5 | 1980 | |
850d0752 | 1981 | void |
d3da34e0 | 1982 | create_pty (Lisp_Object process) |
850d0752 NR |
1983 | { |
1984 | int inchannel, outchannel; | |
afd4052b | 1985 | int pty_flag = 0; |
850d0752 NR |
1986 | |
1987 | inchannel = outchannel = -1; | |
1988 | ||
1989 | #ifdef HAVE_PTYS | |
1990 | if (!NILP (Vprocess_connection_type)) | |
1991 | outchannel = inchannel = allocate_pty (); | |
1992 | ||
1993 | if (inchannel >= 0) | |
1994 | { | |
1995 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
1996 | /* On most USG systems it does not work to open the pty's tty here, | |
1997 | then close it and reopen it in the child. */ | |
1998 | #ifdef O_NOCTTY | |
1999 | /* Don't let this terminal become our controlling terminal | |
2000 | (in case we don't have one). */ | |
afd4052b | 2001 | int forkout = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
850d0752 | 2002 | #else |
afd4052b | 2003 | int forkout = emacs_open (pty_name, O_RDWR, 0); |
850d0752 | 2004 | #endif |
aba7731a | 2005 | if (forkout < 0) |
850d0752 | 2006 | report_file_error ("Opening pty", Qnil); |
019d2c4c | 2007 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
2008 | /* In the case that vfork is defined as fork, the parent process |
2009 | (Emacs) may send some data before the child process completes | |
2010 | tty options setup. So we setup tty before forking. */ | |
2011 | child_setup_tty (forkout); | |
019d2c4c | 2012 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
2013 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
2014 | pty_flag = 1; | |
2015 | } | |
2016 | #endif /* HAVE_PTYS */ | |
2017 | ||
2018 | #ifdef O_NONBLOCK | |
2019 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
2020 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
2021 | #else | |
2022 | #ifdef O_NDELAY | |
2023 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
2024 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
2025 | #endif | |
2026 | #endif | |
2027 | ||
2028 | /* Record this as an active process, with its channels. | |
2029 | As a result, child_setup will close Emacs's side of the pipes. */ | |
2030 | chan_process[inchannel] = process; | |
2031 | XPROCESS (process)->infd = inchannel; | |
2032 | XPROCESS (process)->outfd = outchannel; | |
2033 | ||
2034 | /* Previously we recorded the tty descriptor used in the subprocess. | |
2035 | It was only used for getting the foreground tty process, so now | |
2036 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
2037 | more portable (see USG_SUBTTY_WORKS above). */ | |
2038 | ||
2039 | XPROCESS (process)->pty_flag = pty_flag; | |
6a09a33b | 2040 | pset_status (XPROCESS (process), Qrun); |
850d0752 NR |
2041 | setup_process_coding_systems (process); |
2042 | ||
2043 | FD_SET (inchannel, &input_wait_mask); | |
2044 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
2045 | if (inchannel > max_process_desc) | |
2046 | max_process_desc = inchannel; | |
2047 | ||
2048 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
2049 | #ifdef HAVE_PTYS |
2050 | if (pty_flag) | |
6a09a33b | 2051 | pset_tty_name (XPROCESS (process), build_string (pty_name)); |
8b9fc636 EZ |
2052 | else |
2053 | #endif | |
6a09a33b | 2054 | pset_tty_name (XPROCESS (process), Qnil); |
850d0752 NR |
2055 | } |
2056 | ||
e690ca94 | 2057 | \f |
e690ca94 KS |
2058 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2059 | The address family of sa is not included in the result. */ | |
2060 | ||
2061 | static Lisp_Object | |
d3da34e0 | 2062 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
2063 | { |
2064 | Lisp_Object address; | |
2065 | int i; | |
2066 | unsigned char *cp; | |
2067 | register struct Lisp_Vector *p; | |
2068 | ||
63136da6 AS |
2069 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2070 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2071 | a zero length name. */ | |
89887d67 | 2072 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2073 | return empty_unibyte_string; |
63136da6 | 2074 | |
e690ca94 KS |
2075 | switch (sa->sa_family) |
2076 | { | |
2077 | case AF_INET: | |
2078 | { | |
2079 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2080 | len = sizeof (sin->sin_addr) + 1; | |
2081 | address = Fmake_vector (make_number (len), Qnil); | |
2082 | p = XVECTOR (address); | |
2083 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2084 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2085 | break; |
2086 | } | |
e1652a86 KS |
2087 | #ifdef AF_INET6 |
2088 | case AF_INET6: | |
2089 | { | |
2090 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2091 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2092 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2093 | address = Fmake_vector (make_number (len), Qnil); | |
2094 | p = XVECTOR (address); | |
2095 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2096 | for (i = 0; i < len; i++) | |
2097 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2098 | return address; | |
2099 | } | |
2100 | #endif | |
e690ca94 KS |
2101 | #ifdef HAVE_LOCAL_SOCKETS |
2102 | case AF_LOCAL: | |
2103 | { | |
fb23673a EZ |
2104 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2105 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2106 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2107 | break; |
fb23673a | 2108 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2109 | } |
2110 | #endif | |
2111 | default: | |
89887d67 | 2112 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2113 | address = Fcons (make_number (sa->sa_family), |
2114 | Fmake_vector (make_number (len), Qnil)); | |
2115 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2116 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2117 | break; |
2118 | } | |
2119 | ||
2120 | i = 0; | |
2121 | while (i < len) | |
2122 | p->contents[i++] = make_number (*cp++); | |
2123 | ||
2124 | return address; | |
2125 | } | |
2126 | ||
2127 | ||
2128 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2129 | ||
2130 | static int | |
d3da34e0 | 2131 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2132 | { |
2133 | register struct Lisp_Vector *p; | |
2134 | ||
2135 | if (VECTORP (address)) | |
2136 | { | |
2137 | p = XVECTOR (address); | |
eab3844f | 2138 | if (p->header.size == 5) |
e690ca94 KS |
2139 | { |
2140 | *familyp = AF_INET; | |
2141 | return sizeof (struct sockaddr_in); | |
2142 | } | |
e1652a86 | 2143 | #ifdef AF_INET6 |
eab3844f | 2144 | else if (p->header.size == 9) |
e1652a86 KS |
2145 | { |
2146 | *familyp = AF_INET6; | |
2147 | return sizeof (struct sockaddr_in6); | |
2148 | } | |
2149 | #endif | |
e690ca94 KS |
2150 | } |
2151 | #ifdef HAVE_LOCAL_SOCKETS | |
2152 | else if (STRINGP (address)) | |
2153 | { | |
2154 | *familyp = AF_LOCAL; | |
2155 | return sizeof (struct sockaddr_un); | |
2156 | } | |
2157 | #endif | |
d311d28c PE |
2158 | else if (CONSP (address) && TYPE_RANGED_INTEGERP (int, XCAR (address)) |
2159 | && VECTORP (XCDR (address))) | |
e690ca94 KS |
2160 | { |
2161 | struct sockaddr *sa; | |
2162 | *familyp = XINT (XCAR (address)); | |
2163 | p = XVECTOR (XCDR (address)); | |
eab3844f | 2164 | return p->header.size + sizeof (sa->sa_family); |
e690ca94 KS |
2165 | } |
2166 | return 0; | |
2167 | } | |
2168 | ||
2169 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2170 | |
2171 | The address format has been basically validated by | |
2172 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2173 | it could have come from user data. So if FAMILY is not valid, | |
2174 | we return after zeroing *SA. */ | |
e690ca94 KS |
2175 | |
2176 | static void | |
d3da34e0 | 2177 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2178 | { |
2179 | register struct Lisp_Vector *p; | |
34967d0f | 2180 | register unsigned char *cp = NULL; |
e690ca94 | 2181 | register int i; |
d311d28c | 2182 | EMACS_INT hostport; |
e690ca94 | 2183 | |
72af86bd | 2184 | memset (sa, 0, len); |
e690ca94 KS |
2185 | |
2186 | if (VECTORP (address)) | |
2187 | { | |
2188 | p = XVECTOR (address); | |
2189 | if (family == AF_INET) | |
2190 | { | |
2191 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2192 | len = sizeof (sin->sin_addr) + 1; | |
d311d28c PE |
2193 | hostport = XINT (p->contents[--len]); |
2194 | sin->sin_port = htons (hostport); | |
e690ca94 | 2195 | cp = (unsigned char *)&sin->sin_addr; |
9d1a8e5d | 2196 | sa->sa_family = family; |
e690ca94 | 2197 | } |
e1652a86 KS |
2198 | #ifdef AF_INET6 |
2199 | else if (family == AF_INET6) | |
2200 | { | |
2201 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2202 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2203 | len = sizeof (sin6->sin6_addr) + 1; | |
d311d28c PE |
2204 | hostport = XINT (p->contents[--len]); |
2205 | sin6->sin6_port = htons (hostport); | |
e1652a86 KS |
2206 | for (i = 0; i < len; i++) |
2207 | if (INTEGERP (p->contents[i])) | |
2208 | { | |
2209 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2210 | ip6[i] = ntohs (j); | |
2211 | } | |
9d1a8e5d | 2212 | sa->sa_family = family; |
0eb7675e | 2213 | return; |
e1652a86 KS |
2214 | } |
2215 | #endif | |
0eb7675e AS |
2216 | else |
2217 | return; | |
e690ca94 KS |
2218 | } |
2219 | else if (STRINGP (address)) | |
2220 | { | |
2221 | #ifdef HAVE_LOCAL_SOCKETS | |
2222 | if (family == AF_LOCAL) | |
2223 | { | |
fb23673a | 2224 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2225 | cp = SDATA (address); |
fb23673a EZ |
2226 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2227 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2228 | sa->sa_family = family; |
e690ca94 KS |
2229 | } |
2230 | #endif | |
2231 | return; | |
2232 | } | |
2233 | else | |
2234 | { | |
2235 | p = XVECTOR (XCDR (address)); | |
2236 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2237 | } | |
2238 | ||
2239 | for (i = 0; i < len; i++) | |
2240 | if (INTEGERP (p->contents[i])) | |
2241 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2242 | } | |
2243 | ||
2244 | #ifdef DATAGRAM_SOCKETS | |
2245 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2246 | 1, 1, 0, | |
2247 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2248 | (Lisp_Object process) |
e690ca94 KS |
2249 | { |
2250 | int channel; | |
2251 | ||
2252 | CHECK_PROCESS (process); | |
2253 | ||
2254 | if (!DATAGRAM_CONN_P (process)) | |
2255 | return Qnil; | |
2256 | ||
60f0fb11 | 2257 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2258 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2259 | datagram_address[channel].len); | |
2260 | } | |
2261 | ||
2262 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2263 | 2, 2, 0, | |
2264 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2265 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2266 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2267 | { |
2268 | int channel; | |
2269 | int family, len; | |
2270 | ||
2271 | CHECK_PROCESS (process); | |
2272 | ||
2273 | if (!DATAGRAM_CONN_P (process)) | |
2274 | return Qnil; | |
2275 | ||
60f0fb11 | 2276 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2277 | |
2278 | len = get_lisp_to_sockaddr_size (address, &family); | |
2279 | if (datagram_address[channel].len != len) | |
2280 | return Qnil; | |
2281 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2282 | return address; | |
2283 | } | |
2284 | #endif | |
2285 | \f | |
2286 | ||
5e2327cf | 2287 | static const struct socket_options { |
e690ca94 | 2288 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2289 | name without SO_ prefix. */ |
fce70521 | 2290 | const char *name; |
e690ca94 KS |
2291 | /* Option level SOL_... */ |
2292 | int optlevel; | |
2293 | /* Option number SO_... */ | |
2294 | int optnum; | |
6b61353c KH |
2295 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2296 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2297 | } socket_options[] = |
2298 | { | |
2299 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2300 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2301 | #endif |
2302 | #ifdef SO_BROADCAST | |
6b61353c | 2303 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2304 | #endif |
2305 | #ifdef SO_DONTROUTE | |
6b61353c | 2306 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2307 | #endif |
2308 | #ifdef SO_KEEPALIVE | |
6b61353c | 2309 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2310 | #endif |
2311 | #ifdef SO_LINGER | |
6b61353c | 2312 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2313 | #endif |
2314 | #ifdef SO_OOBINLINE | |
6b61353c | 2315 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2316 | #endif |
2317 | #ifdef SO_PRIORITY | |
6b61353c | 2318 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2319 | #endif |
2320 | #ifdef SO_REUSEADDR | |
6b61353c | 2321 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2322 | #endif |
6b61353c | 2323 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2324 | }; |
2325 | ||
6b61353c | 2326 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2327 | |
6b61353c KH |
2328 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2329 | Signals an error if setting a known option fails. | |
2330 | */ | |
e690ca94 KS |
2331 | |
2332 | static int | |
d3da34e0 | 2333 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2334 | { |
6b61353c | 2335 | char *name; |
5e2327cf | 2336 | const struct socket_options *sopt; |
6b61353c | 2337 | int ret = 0; |
e690ca94 | 2338 | |
6b61353c | 2339 | CHECK_SYMBOL (opt); |
e690ca94 | 2340 | |
51b59d79 | 2341 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2342 | for (sopt = socket_options; sopt->name; sopt++) |
2343 | if (strcmp (name, sopt->name) == 0) | |
2344 | break; | |
e690ca94 | 2345 | |
6b61353c KH |
2346 | switch (sopt->opttype) |
2347 | { | |
2348 | case SOPT_BOOL: | |
2349 | { | |
2350 | int optval; | |
2351 | optval = NILP (val) ? 0 : 1; | |
2352 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2353 | &optval, sizeof (optval)); | |
2354 | break; | |
2355 | } | |
e690ca94 | 2356 | |
6b61353c KH |
2357 | case SOPT_INT: |
2358 | { | |
2359 | int optval; | |
d311d28c | 2360 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2361 | optval = XINT (val); |
2362 | else | |
2363 | error ("Bad option value for %s", name); | |
2364 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2365 | &optval, sizeof (optval)); | |
2366 | break; | |
2367 | } | |
e690ca94 | 2368 | |
6b61353c KH |
2369 | #ifdef SO_BINDTODEVICE |
2370 | case SOPT_IFNAME: | |
2371 | { | |
2372 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2373 | |
6b61353c KH |
2374 | /* This is broken, at least in the Linux 2.4 kernel. |
2375 | To unbind, the arg must be a zero integer, not the empty string. | |
2376 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2377 | memset (devname, 0, sizeof devname); |
6b61353c | 2378 | if (STRINGP (val)) |
e690ca94 | 2379 | { |
51b59d79 | 2380 | char *arg = SSDATA (val); |
6b61353c | 2381 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2382 | memcpy (devname, arg, len); |
e690ca94 | 2383 | } |
6b61353c KH |
2384 | else if (!NILP (val)) |
2385 | error ("Bad option value for %s", name); | |
2386 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2387 | devname, IFNAMSIZ); | |
2388 | break; | |
2389 | } | |
2390 | #endif | |
e690ca94 | 2391 | |
177c0ea7 | 2392 | #ifdef SO_LINGER |
6b61353c KH |
2393 | case SOPT_LINGER: |
2394 | { | |
2395 | struct linger linger; | |
e690ca94 | 2396 | |
6b61353c KH |
2397 | linger.l_onoff = 1; |
2398 | linger.l_linger = 0; | |
d311d28c | 2399 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2400 | linger.l_linger = XINT (val); |
2401 | else | |
2402 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2403 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2404 | &linger, sizeof (linger)); | |
2405 | break; | |
2406 | } | |
e690ca94 | 2407 | #endif |
6b61353c KH |
2408 | |
2409 | default: | |
2410 | return 0; | |
e690ca94 | 2411 | } |
6b61353c KH |
2412 | |
2413 | if (ret < 0) | |
2414 | report_file_error ("Cannot set network option", | |
2415 | Fcons (opt, Fcons (val, Qnil))); | |
2416 | return (1 << sopt->optbit); | |
e690ca94 KS |
2417 | } |
2418 | ||
6b61353c KH |
2419 | |
2420 | DEFUN ("set-network-process-option", | |
2421 | Fset_network_process_option, Sset_network_process_option, | |
2422 | 3, 4, 0, | |
2423 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2424 | See `make-network-process' for a list of options and values. | |
2425 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2426 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2427 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2428 | { |
6b61353c KH |
2429 | int s; |
2430 | struct Lisp_Process *p; | |
e690ca94 | 2431 | |
e690ca94 | 2432 | CHECK_PROCESS (process); |
6b61353c KH |
2433 | p = XPROCESS (process); |
2434 | if (!NETCONN1_P (p)) | |
2435 | error ("Process is not a network process"); | |
2436 | ||
60f0fb11 | 2437 | s = p->infd; |
6b61353c KH |
2438 | if (s < 0) |
2439 | error ("Process is not running"); | |
2440 | ||
2441 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2442 | { |
6a09a33b | 2443 | pset_childp (p, Fplist_put (p->childp, option, value)); |
6b61353c | 2444 | return Qt; |
e690ca94 | 2445 | } |
6b61353c KH |
2446 | |
2447 | if (NILP (no_error)) | |
2448 | error ("Unknown or unsupported option"); | |
2449 | ||
2450 | return Qnil; | |
e690ca94 | 2451 | } |
6b61353c | 2452 | |
e690ca94 | 2453 | \f |
d888760c GM |
2454 | DEFUN ("serial-process-configure", |
2455 | Fserial_process_configure, | |
2456 | Sserial_process_configure, | |
2457 | 0, MANY, 0, | |
2458 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2459 | ||
2460 | Arguments are specified as keyword/argument pairs. Attributes that | |
2461 | are not given are re-initialized from the process's current | |
2462 | configuration (available via the function `process-contact') or set to | |
2463 | reasonable default values. The following arguments are defined: | |
2464 | ||
2465 | :process PROCESS | |
2466 | :name NAME | |
2467 | :buffer BUFFER | |
2468 | :port PORT | |
2469 | -- Any of these arguments can be given to identify the process that is | |
2470 | to be configured. If none of these arguments is given, the current | |
2471 | buffer's process is used. | |
2472 | ||
2473 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2474 | second, also called baud rate. Any value can be given for SPEED, but | |
2475 | most serial ports work only at a few defined values between 1200 and | |
2476 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2477 | serial port is not configured any further, i.e., all other arguments | |
2478 | are ignored. This may be useful for special serial ports such as | |
2479 | Bluetooth-to-serial converters which can only be configured through AT | |
2480 | commands. A value of nil for SPEED can be used only when passed | |
2481 | through `make-serial-process' or `serial-term'. | |
2482 | ||
2483 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2484 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2485 | ||
2486 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2487 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2488 | PARITY is not given, no parity is used. | |
2489 | ||
2490 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2491 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2492 | is not given or nil, 1 stopbit is used. | |
2493 | ||
2494 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2495 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2496 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2497 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2498 | flowcontrol is used. | |
2499 | ||
2500 | `serial-process-configure' is called by `make-serial-process' for the | |
2501 | initial configuration of the serial port. | |
2502 | ||
2503 | Examples: | |
2504 | ||
2505 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2506 | ||
2507 | \(serial-process-configure | |
2508 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2509 | ||
2510 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2511 | ||
2512 | usage: (serial-process-configure &rest ARGS) */) | |
f66c7cf8 | 2513 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2514 | { |
2515 | struct Lisp_Process *p; | |
2516 | Lisp_Object contact = Qnil; | |
2517 | Lisp_Object proc = Qnil; | |
2518 | struct gcpro gcpro1; | |
2519 | ||
2520 | contact = Flist (nargs, args); | |
2521 | GCPRO1 (contact); | |
2522 | ||
2523 | proc = Fplist_get (contact, QCprocess); | |
2524 | if (NILP (proc)) | |
2525 | proc = Fplist_get (contact, QCname); | |
2526 | if (NILP (proc)) | |
2527 | proc = Fplist_get (contact, QCbuffer); | |
2528 | if (NILP (proc)) | |
2529 | proc = Fplist_get (contact, QCport); | |
2530 | proc = get_process (proc); | |
2531 | p = XPROCESS (proc); | |
4d2b044c | 2532 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2533 | error ("Not a serial process"); |
2534 | ||
4d2b044c | 2535 | if (NILP (Fplist_get (p->childp, QCspeed))) |
d888760c GM |
2536 | { |
2537 | UNGCPRO; | |
2538 | return Qnil; | |
2539 | } | |
2540 | ||
2541 | serial_configure (p, contact); | |
2542 | ||
2543 | UNGCPRO; | |
2544 | return Qnil; | |
2545 | } | |
d888760c | 2546 | |
d888760c | 2547 | /* Used by make-serial-process to recover from errors. */ |
b766f867 PE |
2548 | static Lisp_Object |
2549 | make_serial_process_unwind (Lisp_Object proc) | |
d888760c GM |
2550 | { |
2551 | if (!PROCESSP (proc)) | |
1088b922 | 2552 | emacs_abort (); |
d888760c GM |
2553 | remove_process (proc); |
2554 | return Qnil; | |
2555 | } | |
d888760c | 2556 | |
d888760c GM |
2557 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2558 | 0, MANY, 0, | |
2559 | doc: /* Create and return a serial port process. | |
2560 | ||
2561 | In Emacs, serial port connections are represented by process objects, | |
2562 | so input and output work as for subprocesses, and `delete-process' | |
2563 | closes a serial port connection. However, a serial process has no | |
2564 | process id, it cannot be signaled, and the status codes are different | |
2565 | from normal processes. | |
2566 | ||
2567 | `make-serial-process' creates a process and a buffer, on which you | |
2568 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2569 | an interactive terminal. See below for examples. | |
2570 | ||
2571 | Arguments are specified as keyword/argument pairs. The following | |
2572 | arguments are defined: | |
2573 | ||
2574 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2575 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2576 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2577 | the backslashes in strings). | |
2578 | ||
2579 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
4373fd43 | 2580 | which this function calls. |
d888760c GM |
2581 | |
2582 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2583 | the value of PORT is used. | |
2584 | ||
2585 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2586 | with the process. Process output goes at the end of that buffer, | |
2587 | unless you specify an output stream or filter function to handle the | |
2588 | output. If BUFFER is not given, the value of NAME is used. | |
2589 | ||
2590 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2591 | system used for both reading and writing for this process. If CODING | |
2592 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2593 | ENCODING is used for writing. | |
2594 | ||
2595 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2596 | the process is running. If BOOL is not given, query before exiting. | |
2597 | ||
2598 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2599 | In the stopped state, a serial process does not accept incoming data, | |
2600 | but you can send outgoing data. The stopped state is cleared by | |
2601 | `continue-process' and set by `stop-process'. | |
2602 | ||
2603 | :filter FILTER -- Install FILTER as the process filter. | |
2604 | ||
2605 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2606 | ||
2607 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2608 | ||
d888760c GM |
2609 | :bytesize |
2610 | :parity | |
2611 | :stopbits | |
2612 | :flowcontrol | |
4373fd43 GM |
2613 | -- This function calls `serial-process-configure' to handle these |
2614 | arguments. | |
d888760c GM |
2615 | |
2616 | The original argument list, possibly modified by later configuration, | |
2617 | is available via the function `process-contact'. | |
2618 | ||
2619 | Examples: | |
2620 | ||
2621 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2622 | ||
2623 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2624 | ||
2625 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2626 | ||
2627 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2628 | ||
2629 | usage: (make-serial-process &rest ARGS) */) | |
f66c7cf8 | 2630 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2631 | { |
2632 | int fd = -1; | |
2633 | Lisp_Object proc, contact, port; | |
2634 | struct Lisp_Process *p; | |
2635 | struct gcpro gcpro1; | |
2636 | Lisp_Object name, buffer; | |
2637 | Lisp_Object tem, val; | |
d311d28c | 2638 | ptrdiff_t specpdl_count = -1; |
d888760c GM |
2639 | |
2640 | if (nargs == 0) | |
2641 | return Qnil; | |
2642 | ||
2643 | contact = Flist (nargs, args); | |
2644 | GCPRO1 (contact); | |
2645 | ||
2646 | port = Fplist_get (contact, QCport); | |
2647 | if (NILP (port)) | |
2648 | error ("No port specified"); | |
2649 | CHECK_STRING (port); | |
2650 | ||
2651 | if (NILP (Fplist_member (contact, QCspeed))) | |
2652 | error (":speed not specified"); | |
2653 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2654 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2655 | ||
2656 | name = Fplist_get (contact, QCname); | |
2657 | if (NILP (name)) | |
2658 | name = port; | |
2659 | CHECK_STRING (name); | |
2660 | proc = make_process (name); | |
2661 | specpdl_count = SPECPDL_INDEX (); | |
2662 | record_unwind_protect (make_serial_process_unwind, proc); | |
2663 | p = XPROCESS (proc); | |
2664 | ||
51b59d79 | 2665 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2666 | p->infd = fd; |
2667 | p->outfd = fd; | |
2668 | if (fd > max_process_desc) | |
2669 | max_process_desc = fd; | |
2670 | chan_process[fd] = proc; | |
2671 | ||
2672 | buffer = Fplist_get (contact, QCbuffer); | |
2673 | if (NILP (buffer)) | |
2674 | buffer = name; | |
2675 | buffer = Fget_buffer_create (buffer); | |
6a09a33b PE |
2676 | pset_buffer (p, buffer); |
2677 | ||
2678 | pset_childp (p, contact); | |
2679 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
2680 | pset_type (p, Qserial); | |
2681 | pset_sentinel (p, Fplist_get (contact, QCsentinel)); | |
2682 | pset_filter (p, Fplist_get (contact, QCfilter)); | |
2683 | pset_log (p, Qnil); | |
d888760c GM |
2684 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
2685 | p->kill_without_query = 1; | |
2686 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
6a09a33b | 2687 | pset_command (p, Qt); |
d888760c GM |
2688 | p->pty_flag = 0; |
2689 | ||
4d2b044c | 2690 | if (!EQ (p->command, Qt)) |
d888760c GM |
2691 | { |
2692 | FD_SET (fd, &input_wait_mask); | |
2693 | FD_SET (fd, &non_keyboard_wait_mask); | |
2694 | } | |
2695 | ||
2696 | if (BUFFERP (buffer)) | |
2697 | { | |
4d2b044c | 2698 | set_marker_both (p->mark, buffer, |
d888760c GM |
2699 | BUF_ZV (XBUFFER (buffer)), |
2700 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2701 | } | |
2702 | ||
2703 | tem = Fplist_member (contact, QCcoding); | |
2704 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2705 | tem = Qnil; | |
2706 | ||
2707 | val = Qnil; | |
2708 | if (!NILP (tem)) | |
2709 | { | |
2710 | val = XCAR (XCDR (tem)); | |
2711 | if (CONSP (val)) | |
2712 | val = XCAR (val); | |
2713 | } | |
2714 | else if (!NILP (Vcoding_system_for_read)) | |
2715 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2716 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2717 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2718 | val = Qnil; |
6a09a33b | 2719 | pset_decode_coding_system (p, val); |
d888760c GM |
2720 | |
2721 | val = Qnil; | |
2722 | if (!NILP (tem)) | |
2723 | { | |
2724 | val = XCAR (XCDR (tem)); | |
2725 | if (CONSP (val)) | |
2726 | val = XCDR (val); | |
2727 | } | |
2728 | else if (!NILP (Vcoding_system_for_write)) | |
2729 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2730 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2731 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2732 | val = Qnil; |
6a09a33b | 2733 | pset_encode_coding_system (p, val); |
d888760c GM |
2734 | |
2735 | setup_process_coding_systems (proc); | |
6a09a33b | 2736 | pset_decoding_buf (p, empty_unibyte_string); |
d888760c | 2737 | p->decoding_carryover = 0; |
6a09a33b | 2738 | pset_encoding_buf (p, empty_unibyte_string); |
d888760c GM |
2739 | p->inherit_coding_system_flag |
2740 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2741 | ||
ed3751c8 | 2742 | Fserial_process_configure (nargs, args); |
d888760c GM |
2743 | |
2744 | specpdl_ptr = specpdl + specpdl_count; | |
2745 | ||
2746 | UNGCPRO; | |
2747 | return proc; | |
2748 | } | |
d888760c | 2749 | |
e690ca94 KS |
2750 | /* Create a network stream/datagram client/server process. Treated |
2751 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2752 | differences are in status display and process deletion. A network |
2753 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2754 | stop/continue it and deactivate/close it via delete-process */ |
2755 | ||
177c0ea7 JB |
2756 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2757 | 0, MANY, 0, | |
e690ca94 KS |
2758 | doc: /* Create and return a network server or client process. |
2759 | ||
fa9d4315 | 2760 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2761 | input and output work as for subprocesses and `delete-process' closes |
2762 | a network connection. However, a network process has no process id, | |
d22426e1 | 2763 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2764 | processes. |
2765 | ||
2766 | Arguments are specified as keyword/argument pairs. The following | |
2767 | arguments are defined: | |
2768 | ||
2769 | :name NAME -- NAME is name for process. It is modified if necessary | |
2770 | to make it unique. | |
2771 | ||
2772 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2773 | with the process. Process output goes at end of that buffer, unless | |
2774 | you specify an output stream or filter function to handle the output. | |
2775 | BUFFER may be also nil, meaning that this process is not associated | |
2776 | with any buffer. | |
2777 | ||
2778 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2779 | address. The symbol `local' specifies the local host. If specified | |
2780 | for a server process, it must be a valid name or address for the local | |
2781 | host, and only clients connecting to that address will be accepted. | |
2782 | ||
2783 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2784 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2785 | a random port number is selected for the server. (If Emacs was |
2786 | compiled with getaddrinfo, a port number can also be specified as a | |
2787 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2788 | |
9057ff80 | 2789 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2790 | stream type connection, `datagram' creates a datagram type connection, |
2791 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2792 | |
e690ca94 | 2793 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2794 | service specified by HOST and SERVICE. The default (nil) is to use |
2795 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2796 | and port number specified by HOST and SERVICE. Other address families | |
2797 | supported are: | |
e690ca94 | 2798 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2799 | ipv4 -- use IPv4 address family only. |
2800 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2801 | |
2802 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2803 | This parameter is ignored when opening a client process. When specified | |
2804 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2805 | ||
2806 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2807 | connection. This parameter is ignored when opening a stream server | |
2808 | process. For a datagram server process, it specifies the initial | |
2809 | setting of the remote datagram address. When specified for a client | |
2810 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2811 | ||
2812 | The format of ADDRESS depends on the address family: | |
2813 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2814 | corresponding to numeric IP address A.B.C.D and port number P. | |
2815 | - A local address is represented as a string with the address in the | |
2816 | local address space. | |
2817 | - An "unsupported family" address is represented by a cons (F . AV) | |
2818 | where F is the family number and AV is a vector containing the socket | |
2819 | address data with one element per address data byte. Do not rely on | |
2820 | this format in portable code, as it may depend on implementation | |
2821 | defined constants, data sizes, and data structure alignment. | |
2822 | ||
6b61353c KH |
2823 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2824 | system used for both reading and writing for this process. If CODING | |
2825 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2826 | ENCODING is used for writing. | |
e690ca94 KS |
2827 | |
2828 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2829 | return without waiting for the connection to complete; instead, the | |
2830 | sentinel function will be called with second arg matching "open" (if | |
2831 | successful) or "failed" when the connect completes. Default is to use | |
2832 | a blocking connect (i.e. wait) for stream type connections. | |
2833 | ||
2834 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2835 | running when Emacs is exited. |
e690ca94 KS |
2836 | |
2837 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2838 | In the stopped state, a server process does not accept new | |
2839 | connections, and a client process does not handle incoming traffic. | |
2840 | The stopped state is cleared by `continue-process' and set by | |
2841 | `stop-process'. | |
2842 | ||
2843 | :filter FILTER -- Install FILTER as the process filter. | |
2844 | ||
7392e23c KS |
2845 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2846 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2847 | If this keyword is not specified, the strings are multibyte if |
016a35df | 2848 | the default value of `enable-multibyte-characters' is non-nil. |
03f04413 | 2849 | |
e690ca94 KS |
2850 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2851 | ||
2852 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2853 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2854 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2855 | is the server process, CLIENT is the new process for the connection, | |
2856 | and MESSAGE is a string. | |
2857 | ||
faa7db08 | 2858 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2859 | |
6b61353c | 2860 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2861 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2862 | If QLEN is an integer, it is used as the max. length of the server's |
2863 | pending connection queue (also known as the backlog); the default | |
2864 | queue length is 5. Default is to create a client process. | |
2865 | ||
2866 | The following network options can be specified for this connection: | |
2867 | ||
2868 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2869 | :dontroute BOOL -- Only send to directly connected hosts. | |
2870 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2871 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2872 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2873 | :priority INT -- Set protocol defined priority for sent packets. | |
2874 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2875 | (this is allowed by default for a server process). | |
2876 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2877 | special privileges on some systems. | |
2878 | ||
2879 | Consult the relevant system programmer's manual pages for more | |
2880 | information on using these options. | |
2881 | ||
2882 | ||
2883 | A server process will listen for and accept connections from clients. | |
2884 | When a client connection is accepted, a new network process is created | |
2885 | for the connection with the following parameters: | |
e690ca94 | 2886 | |
e690ca94 KS |
2887 | - The client's process name is constructed by concatenating the server |
2888 | process' NAME and a client identification string. | |
2889 | - If the FILTER argument is non-nil, the client process will not get a | |
2890 | separate process buffer; otherwise, the client's process buffer is a newly | |
2891 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2892 | NAME concatenated with the client identification string. |
e690ca94 KS |
2893 | - The connection type and the process filter and sentinel parameters are |
2894 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2895 | - The client process' contact info is set according to the client's | |
2896 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2897 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2898 | |
2899 | Notice that the FILTER and SENTINEL args are never used directly by | |
2900 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2901 | the server process, but via the optional :log function, accepted (and |
2902 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2903 | |
365aee82 KS |
2904 | The original argument list, modified with the actual connection |
2905 | information, is available via the `process-contact' function. | |
365aee82 | 2906 | |
fa9d4315 | 2907 | usage: (make-network-process &rest ARGS) */) |
f66c7cf8 | 2908 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 JB |
2909 | { |
2910 | Lisp_Object proc; | |
e690ca94 KS |
2911 | Lisp_Object contact; |
2912 | struct Lisp_Process *p; | |
70dbdb36 | 2913 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2914 | struct addrinfo ai, *res, *lres; |
e1652a86 | 2915 | struct addrinfo hints; |
8ea90aa3 DN |
2916 | const char *portstring; |
2917 | char portbuf[128]; | |
70dbdb36 | 2918 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2919 | struct _emacs_addrinfo |
2920 | { | |
2921 | int ai_family; | |
2922 | int ai_socktype; | |
2923 | int ai_protocol; | |
2924 | int ai_addrlen; | |
2925 | struct sockaddr *ai_addr; | |
2926 | struct _emacs_addrinfo *ai_next; | |
2927 | } ai, *res, *lres; | |
418b48fd | 2928 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2929 | struct sockaddr_in address_in; |
2930 | #ifdef HAVE_LOCAL_SOCKETS | |
2931 | struct sockaddr_un address_un; | |
2932 | #endif | |
2933 | int port; | |
dd2a17ab KS |
2934 | int ret = 0; |
2935 | int xerrno = 0; | |
418b48fd | 2936 | int s = -1, outch, inch; |
e690ca94 | 2937 | struct gcpro gcpro1; |
d311d28c PE |
2938 | ptrdiff_t count = SPECPDL_INDEX (); |
2939 | ptrdiff_t count1; | |
e690ca94 KS |
2940 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2941 | Lisp_Object tem; | |
2942 | Lisp_Object name, buffer, host, service, address; | |
2943 | Lisp_Object filter, sentinel; | |
2944 | int is_non_blocking_client = 0; | |
6b61353c | 2945 | int is_server = 0, backlog = 5; |
9057ff80 | 2946 | int socktype; |
e690ca94 KS |
2947 | int family = -1; |
2948 | ||
2949 | if (nargs == 0) | |
2950 | return Qnil; | |
dd2a17ab | 2951 | |
e690ca94 KS |
2952 | /* Save arguments for process-contact and clone-process. */ |
2953 | contact = Flist (nargs, args); | |
2954 | GCPRO1 (contact); | |
2955 | ||
bff3ed0a RS |
2956 | #ifdef WINDOWSNT |
2957 | /* Ensure socket support is loaded if available. */ | |
2958 | init_winsock (TRUE); | |
2959 | #endif | |
2960 | ||
9057ff80 KS |
2961 | /* :type TYPE (nil: stream, datagram */ |
2962 | tem = Fplist_get (contact, QCtype); | |
2963 | if (NILP (tem)) | |
2964 | socktype = SOCK_STREAM; | |
2965 | #ifdef DATAGRAM_SOCKETS | |
2966 | else if (EQ (tem, Qdatagram)) | |
2967 | socktype = SOCK_DGRAM; | |
f00c449b SM |
2968 | #endif |
2969 | #ifdef HAVE_SEQPACKET | |
2970 | else if (EQ (tem, Qseqpacket)) | |
2971 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 2972 | #endif |
9057ff80 KS |
2973 | else |
2974 | error ("Unsupported connection type"); | |
e690ca94 KS |
2975 | |
2976 | /* :server BOOL */ | |
2977 | tem = Fplist_get (contact, QCserver); | |
2978 | if (!NILP (tem)) | |
2979 | { | |
75728599 JR |
2980 | /* Don't support network sockets when non-blocking mode is |
2981 | not available, since a blocked Emacs is not useful. */ | |
5e617bc2 | 2982 | #if !defined (O_NONBLOCK) && !defined (O_NDELAY) |
e690ca94 KS |
2983 | error ("Network servers not supported"); |
2984 | #else | |
2985 | is_server = 1; | |
d311d28c | 2986 | if (TYPE_RANGED_INTEGERP (int, tem)) |
6b61353c | 2987 | backlog = XINT (tem); |
e690ca94 KS |
2988 | #endif |
2989 | } | |
2990 | ||
2991 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2992 | QCaddress = is_server ? QClocal : QCremote; | |
2993 | ||
d7e344cd | 2994 | /* :nowait BOOL */ |
84b31826 | 2995 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
2996 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
2997 | { | |
2998 | #ifndef NON_BLOCKING_CONNECT | |
2999 | error ("Non-blocking connect not supported"); | |
3000 | #else | |
3001 | is_non_blocking_client = 1; | |
3002 | #endif | |
3003 | } | |
3004 | ||
3005 | name = Fplist_get (contact, QCname); | |
3006 | buffer = Fplist_get (contact, QCbuffer); | |
3007 | filter = Fplist_get (contact, QCfilter); | |
3008 | sentinel = Fplist_get (contact, QCsentinel); | |
3009 | ||
b7826503 | 3010 | CHECK_STRING (name); |
e690ca94 | 3011 | |
e690ca94 KS |
3012 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
3013 | ai.ai_socktype = socktype; | |
3014 | ai.ai_protocol = 0; | |
3015 | ai.ai_next = NULL; | |
3016 | res = &ai; | |
a319f7c1 | 3017 | |
e690ca94 KS |
3018 | /* :local ADDRESS or :remote ADDRESS */ |
3019 | address = Fplist_get (contact, QCaddress); | |
3020 | if (!NILP (address)) | |
a319f7c1 | 3021 | { |
e690ca94 KS |
3022 | host = service = Qnil; |
3023 | ||
3024 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
3025 | error ("Malformed :address"); | |
3026 | ai.ai_family = family; | |
3027 | ai.ai_addr = alloca (ai.ai_addrlen); | |
3028 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
3029 | goto open_socket; | |
a319f7c1 | 3030 | } |
e690ca94 KS |
3031 | |
3032 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
3033 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 3034 | if (NILP (tem)) |
a319f7c1 | 3035 | { |
5e617bc2 | 3036 | #if defined (HAVE_GETADDRINFO) && defined (AF_INET6) |
e1652a86 KS |
3037 | family = AF_UNSPEC; |
3038 | #else | |
3039 | family = AF_INET; | |
e690ca94 | 3040 | #endif |
a319f7c1 | 3041 | } |
e1652a86 KS |
3042 | #ifdef HAVE_LOCAL_SOCKETS |
3043 | else if (EQ (tem, Qlocal)) | |
3044 | family = AF_LOCAL; | |
3045 | #endif | |
3046 | #ifdef AF_INET6 | |
3047 | else if (EQ (tem, Qipv6)) | |
3048 | family = AF_INET6; | |
3049 | #endif | |
3050 | else if (EQ (tem, Qipv4)) | |
3051 | family = AF_INET; | |
d311d28c | 3052 | else if (TYPE_RANGED_INTEGERP (int, tem)) |
e1652a86 KS |
3053 | family = XINT (tem); |
3054 | else | |
e690ca94 | 3055 | error ("Unknown address family"); |
e1652a86 | 3056 | |
e690ca94 KS |
3057 | ai.ai_family = family; |
3058 | ||
3059 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3060 | service = Fplist_get (contact, QCservice); | |
3061 | ||
66a9f7f4 SM |
3062 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3063 | host = Fplist_get (contact, QChost); | |
3064 | if (!NILP (host)) | |
3065 | { | |
3066 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
3067 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
3068 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
3069 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
3070 | CHECK_STRING (host); |
3071 | } | |
3072 | ||
e690ca94 KS |
3073 | #ifdef HAVE_LOCAL_SOCKETS |
3074 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3075 | { |
66a9f7f4 SM |
3076 | if (!NILP (host)) |
3077 | { | |
3078 | message (":family local ignores the :host \"%s\" property", | |
3079 | SDATA (host)); | |
3080 | contact = Fplist_put (contact, QChost, Qnil); | |
3081 | host = Qnil; | |
3082 | } | |
b7826503 | 3083 | CHECK_STRING (service); |
72af86bd | 3084 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3085 | address_un.sun_family = AF_LOCAL; |
e99a530f PE |
3086 | if (sizeof address_un.sun_path <= SBYTES (service)) |
3087 | error ("Service name too long"); | |
3088 | strcpy (address_un.sun_path, SSDATA (service)); | |
e690ca94 KS |
3089 | ai.ai_addr = (struct sockaddr *) &address_un; |
3090 | ai.ai_addrlen = sizeof address_un; | |
3091 | goto open_socket; | |
d0d6b7c5 | 3092 | } |
e690ca94 | 3093 | #endif |
a319f7c1 | 3094 | |
798b64bb KH |
3095 | /* Slow down polling to every ten seconds. |
3096 | Some kernels have a bug which causes retrying connect to fail | |
3097 | after a connect. Polling can interfere with gethostbyname too. */ | |
3098 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3099 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3100 | { |
3101 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3102 | bind_polling_period (10); | |
3103 | } | |
798b64bb KH |
3104 | #endif |
3105 | ||
a319f7c1 | 3106 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3107 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3108 | Otherwise, use getservbyname to lookup the service. */ | |
3109 | if (!NILP (host)) | |
3110 | { | |
3111 | ||
3112 | /* SERVICE can either be a string or int. | |
3113 | Convert to a C string for later use by getaddrinfo. */ | |
3114 | if (EQ (service, Qt)) | |
3115 | portstring = "0"; | |
3116 | else if (INTEGERP (service)) | |
3117 | { | |
c2982e87 | 3118 | sprintf (portbuf, "%"pI"d", XINT (service)); |
e690ca94 KS |
3119 | portstring = portbuf; |
3120 | } | |
3121 | else | |
3122 | { | |
3123 | CHECK_STRING (service); | |
42a5b22f | 3124 | portstring = SSDATA (service); |
e690ca94 KS |
3125 | } |
3126 | ||
3127 | immediate_quit = 1; | |
3128 | QUIT; | |
3129 | memset (&hints, 0, sizeof (hints)); | |
3130 | hints.ai_flags = 0; | |
e1652a86 | 3131 | hints.ai_family = family; |
e690ca94 KS |
3132 | hints.ai_socktype = socktype; |
3133 | hints.ai_protocol = 0; | |
08116b48 CY |
3134 | |
3135 | #ifdef HAVE_RES_INIT | |
3136 | res_init (); | |
3137 | #endif | |
3138 | ||
42a5b22f | 3139 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3140 | if (ret) |
f6270f62 | 3141 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3142 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3143 | #else |
42a5b22f | 3144 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3145 | #endif |
e690ca94 | 3146 | immediate_quit = 0; |
a319f7c1 | 3147 | |
e690ca94 KS |
3148 | goto open_socket; |
3149 | } | |
3150 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3151 | |
e690ca94 KS |
3152 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3153 | has been specified (e.g. for a local server process). */ | |
3154 | ||
3155 | if (EQ (service, Qt)) | |
3156 | port = 0; | |
3157 | else if (INTEGERP (service)) | |
3158 | port = htons ((unsigned short) XINT (service)); | |
3159 | else | |
616da37c | 3160 | { |
e690ca94 KS |
3161 | struct servent *svc_info; |
3162 | CHECK_STRING (service); | |
42a5b22f | 3163 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3164 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3165 | if (svc_info == 0) | |
d5db4077 | 3166 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3167 | port = svc_info->s_port; |
3168 | } | |
3169 | ||
72af86bd | 3170 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3171 | address_in.sin_family = family; |
3172 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3173 | address_in.sin_port = port; | |
3174 | ||
3175 | #ifndef HAVE_GETADDRINFO | |
3176 | if (!NILP (host)) | |
3177 | { | |
3178 | struct hostent *host_info_ptr; | |
3179 | ||
c5e87d10 | 3180 | /* gethostbyname may fail with TRY_AGAIN, but we don't honor that, |
f3d9532b | 3181 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3182 | immediate_quit = 1; |
3183 | QUIT; | |
08116b48 CY |
3184 | |
3185 | #ifdef HAVE_RES_INIT | |
3186 | res_init (); | |
3187 | #endif | |
3188 | ||
d5db4077 | 3189 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3190 | immediate_quit = 0; |
177c0ea7 | 3191 | |
e690ca94 KS |
3192 | if (host_info_ptr) |
3193 | { | |
72af86bd AS |
3194 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3195 | host_info_ptr->h_length); | |
e690ca94 KS |
3196 | family = host_info_ptr->h_addrtype; |
3197 | address_in.sin_family = family; | |
3198 | } | |
3199 | else | |
3200 | /* Attempt to interpret host as numeric inet address */ | |
3201 | { | |
4624371d | 3202 | unsigned long numeric_addr; |
51b59d79 | 3203 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3204 | if (numeric_addr == -1) |
d5db4077 | 3205 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3206 | |
72af86bd AS |
3207 | memcpy (&address_in.sin_addr, &numeric_addr, |
3208 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3209 | } |
d0d6b7c5 | 3210 | |
e690ca94 | 3211 | } |
dd2a17ab | 3212 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3213 | |
e690ca94 KS |
3214 | ai.ai_family = family; |
3215 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3216 | ai.ai_addrlen = sizeof address_in; | |
3217 | ||
3218 | open_socket: | |
3219 | ||
dd2a17ab | 3220 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3221 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3222 | s = -1; |
457a9bee | 3223 | |
dd2a17ab KS |
3224 | for (lres = res; lres; lres = lres->ai_next) |
3225 | { | |
f66c7cf8 | 3226 | ptrdiff_t optn; |
c5101a77 | 3227 | int optbits; |
6b61353c | 3228 | |
4dc343ee | 3229 | #ifdef WINDOWSNT |
649dbf36 | 3230 | retry_connect: |
4dc343ee | 3231 | #endif |
649dbf36 | 3232 | |
dd2a17ab KS |
3233 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3234 | if (s < 0) | |
3235 | { | |
3236 | xerrno = errno; | |
3237 | continue; | |
3238 | } | |
0f2ee0c1 | 3239 | |
e690ca94 KS |
3240 | #ifdef DATAGRAM_SOCKETS |
3241 | if (!is_server && socktype == SOCK_DGRAM) | |
3242 | break; | |
3243 | #endif /* DATAGRAM_SOCKETS */ | |
3244 | ||
dd2a17ab | 3245 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3246 | if (is_non_blocking_client) |
dd2a17ab KS |
3247 | { |
3248 | #ifdef O_NONBLOCK | |
3249 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3250 | #else | |
3251 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3252 | #endif | |
3253 | if (ret < 0) | |
3254 | { | |
3255 | xerrno = errno; | |
3256 | emacs_close (s); | |
3257 | s = -1; | |
3258 | continue; | |
3259 | } | |
3260 | } | |
3261 | #endif | |
177c0ea7 | 3262 | |
dd2a17ab | 3263 | /* Make us close S if quit. */ |
dd2a17ab KS |
3264 | record_unwind_protect (close_file_unwind, make_number (s)); |
3265 | ||
6b61353c KH |
3266 | /* Parse network options in the arg list. |
3267 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3268 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3269 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3270 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3271 | ||
e690ca94 KS |
3272 | if (is_server) |
3273 | { | |
3274 | /* Configure as a server socket. */ | |
6b61353c KH |
3275 | |
3276 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3277 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3278 | #ifdef HAVE_LOCAL_SOCKETS |
3279 | if (family != AF_LOCAL) | |
3280 | #endif | |
6b61353c KH |
3281 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3282 | { | |
3283 | int optval = 1; | |
3284 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3285 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3286 | } | |
177c0ea7 | 3287 | |
e690ca94 KS |
3288 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3289 | report_file_error ("Cannot bind server socket", Qnil); | |
3290 | ||
3291 | #ifdef HAVE_GETSOCKNAME | |
3292 | if (EQ (service, Qt)) | |
3293 | { | |
3294 | struct sockaddr_in sa1; | |
401bf9b4 | 3295 | socklen_t len1 = sizeof (sa1); |
e690ca94 KS |
3296 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3297 | { | |
3298 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3299 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3300 | contact = Fplist_put (contact, QCservice, service); |
3301 | } | |
3302 | } | |
3303 | #endif | |
3304 | ||
84b31826 | 3305 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3306 | report_file_error ("Cannot listen on server socket", Qnil); |
3307 | ||
3308 | break; | |
3309 | } | |
3310 | ||
dd2a17ab KS |
3311 | immediate_quit = 1; |
3312 | QUIT; | |
3313 | ||
dd2a17ab KS |
3314 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3315 | xerrno = errno; | |
3316 | ||
dd2a17ab KS |
3317 | if (ret == 0 || xerrno == EISCONN) |
3318 | { | |
dd2a17ab KS |
3319 | /* The unwind-protect will be discarded afterwards. |
3320 | Likewise for immediate_quit. */ | |
3321 | break; | |
3322 | } | |
3323 | ||
3324 | #ifdef NON_BLOCKING_CONNECT | |
3325 | #ifdef EINPROGRESS | |
e690ca94 | 3326 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3327 | break; |
3328 | #else | |
3329 | #ifdef EWOULDBLOCK | |
e690ca94 | 3330 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3331 | break; |
3332 | #endif | |
3333 | #endif | |
3334 | #endif | |
649dbf36 CY |
3335 | |
3336 | #ifndef WINDOWSNT | |
cd591dbc HE |
3337 | if (xerrno == EINTR) |
3338 | { | |
3339 | /* Unlike most other syscalls connect() cannot be called | |
3340 | again. (That would return EALREADY.) The proper way to | |
d35af63c | 3341 | wait for completion is pselect(). */ |
401bf9b4 PE |
3342 | int sc; |
3343 | socklen_t len; | |
cd591dbc HE |
3344 | SELECT_TYPE fdset; |
3345 | retry_select: | |
3346 | FD_ZERO (&fdset); | |
3347 | FD_SET (s, &fdset); | |
3348 | QUIT; | |
d35af63c | 3349 | sc = pselect (s + 1, NULL, &fdset, NULL, NULL, NULL); |
cd591dbc HE |
3350 | if (sc == -1) |
3351 | { | |
649dbf36 | 3352 | if (errno == EINTR) |
cd591dbc | 3353 | goto retry_select; |
649dbf36 | 3354 | else |
cd591dbc HE |
3355 | report_file_error ("select failed", Qnil); |
3356 | } | |
3357 | eassert (sc > 0); | |
649dbf36 CY |
3358 | |
3359 | len = sizeof xerrno; | |
3360 | eassert (FD_ISSET (s, &fdset)); | |
3361 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3362 | report_file_error ("getsockopt failed", Qnil); | |
3363 | if (xerrno) | |
3364 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3365 | else | |
3366 | break; | |
cd591dbc | 3367 | } |
649dbf36 | 3368 | #endif /* !WINDOWSNT */ |
e333e864 | 3369 | |
0f2ee0c1 RS |
3370 | immediate_quit = 0; |
3371 | ||
dd2a17ab | 3372 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3373 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3374 | emacs_close (s); |
dd2a17ab | 3375 | s = -1; |
649dbf36 CY |
3376 | |
3377 | #ifdef WINDOWSNT | |
3378 | if (xerrno == EINTR) | |
3379 | goto retry_connect; | |
3380 | #endif | |
dd2a17ab | 3381 | } |
457a9bee | 3382 | |
e690ca94 KS |
3383 | if (s >= 0) |
3384 | { | |
3385 | #ifdef DATAGRAM_SOCKETS | |
3386 | if (socktype == SOCK_DGRAM) | |
3387 | { | |
3388 | if (datagram_address[s].sa) | |
1088b922 | 3389 | emacs_abort (); |
23f86fce | 3390 | datagram_address[s].sa = xmalloc (lres->ai_addrlen); |
e690ca94 KS |
3391 | datagram_address[s].len = lres->ai_addrlen; |
3392 | if (is_server) | |
3393 | { | |
3394 | Lisp_Object remote; | |
72af86bd | 3395 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3396 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3397 | { | |
3398 | int rfamily, rlen; | |
3399 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3400 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3401 | conv_lisp_to_sockaddr (rfamily, remote, | |
3402 | datagram_address[s].sa, rlen); | |
3403 | } | |
3404 | } | |
3405 | else | |
72af86bd | 3406 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3407 | } |
3408 | #endif | |
177c0ea7 | 3409 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3410 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3411 | #ifdef HAVE_GETSOCKNAME |
3412 | if (!is_server) | |
3413 | { | |
3414 | struct sockaddr_in sa1; | |
401bf9b4 | 3415 | socklen_t len1 = sizeof (sa1); |
2185db04 KS |
3416 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3417 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3418 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3419 | } |
3420 | #endif | |
e690ca94 KS |
3421 | } |
3422 | ||
54b3b62f YM |
3423 | immediate_quit = 0; |
3424 | ||
dd2a17ab | 3425 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3426 | if (res != &ai) |
54b3b62f YM |
3427 | { |
3428 | BLOCK_INPUT; | |
3429 | freeaddrinfo (res); | |
3430 | UNBLOCK_INPUT; | |
3431 | } | |
dd2a17ab KS |
3432 | #endif |
3433 | ||
e690ca94 KS |
3434 | /* Discard the unwind protect for closing S, if any. */ |
3435 | specpdl_ptr = specpdl + count1; | |
3436 | ||
3437 | /* Unwind bind_polling_period and request_sigio. */ | |
3438 | unbind_to (count, Qnil); | |
3439 | ||
dd2a17ab KS |
3440 | if (s < 0) |
3441 | { | |
dd2a17ab KS |
3442 | /* If non-blocking got this far - and failed - assume non-blocking is |
3443 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3444 | the normal blocking calls to open-network-stream handles this error |
3445 | better. */ | |
3446 | if (is_non_blocking_client) | |
dd2a17ab | 3447 | return Qnil; |
dd2a17ab | 3448 | |
d0d6b7c5 | 3449 | errno = xerrno; |
e690ca94 KS |
3450 | if (is_server) |
3451 | report_file_error ("make server process failed", contact); | |
3452 | else | |
3453 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3454 | } |
44ade2e9 | 3455 | |
d0d6b7c5 | 3456 | inch = s; |
59f23005 | 3457 | outch = s; |
d0d6b7c5 JB |
3458 | |
3459 | if (!NILP (buffer)) | |
3460 | buffer = Fget_buffer_create (buffer); | |
3461 | proc = make_process (name); | |
3462 | ||
3463 | chan_process[inch] = proc; | |
3464 | ||
3465 | #ifdef O_NONBLOCK | |
3466 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3467 | #else | |
3468 | #ifdef O_NDELAY | |
3469 | fcntl (inch, F_SETFL, O_NDELAY); | |
3470 | #endif | |
3471 | #endif | |
3472 | ||
e690ca94 KS |
3473 | p = XPROCESS (proc); |
3474 | ||
6a09a33b PE |
3475 | pset_childp (p, contact); |
3476 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
3477 | pset_type (p, Qnetwork); | |
177c0ea7 | 3478 | |
6a09a33b PE |
3479 | pset_buffer (p, buffer); |
3480 | pset_sentinel (p, sentinel); | |
3481 | pset_filter (p, filter); | |
3482 | pset_log (p, Fplist_get (contact, QClog)); | |
e690ca94 | 3483 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
60f0fb11 | 3484 | p->kill_without_query = 1; |
e690ca94 | 3485 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
6a09a33b | 3486 | pset_command (p, Qt); |
6bfd98e7 | 3487 | p->pid = 0; |
60f0fb11 SM |
3488 | p->infd = inch; |
3489 | p->outfd = outch; | |
84b31826 | 3490 | if (is_server && socktype != SOCK_DGRAM) |
6a09a33b | 3491 | pset_status (p, Qlisten); |
dd2a17ab | 3492 | |
f523e0c3 SM |
3493 | /* Make the process marker point into the process buffer (if any). */ |
3494 | if (BUFFERP (buffer)) | |
4d2b044c | 3495 | set_marker_both (p->mark, buffer, |
f523e0c3 SM |
3496 | BUF_ZV (XBUFFER (buffer)), |
3497 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3498 | ||
dd2a17ab | 3499 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3500 | if (is_non_blocking_client) |
dd2a17ab KS |
3501 | { |
3502 | /* We may get here if connect did succeed immediately. However, | |
3503 | in that case, we still need to signal this like a non-blocking | |
3504 | connection. */ | |
6a09a33b | 3505 | pset_status (p, Qconnect); |
dd2a17ab KS |
3506 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3507 | { | |
3508 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3509 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3510 | num_pending_connects++; |
3511 | } | |
3512 | } | |
3513 | else | |
3514 | #endif | |
e690ca94 KS |
3515 | /* A server may have a client filter setting of Qt, but it must |
3516 | still listen for incoming connects unless it is stopped. */ | |
4d2b044c DA |
3517 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
3518 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3519 | { |
3520 | FD_SET (inch, &input_wait_mask); | |
3521 | FD_SET (inch, &non_keyboard_wait_mask); | |
3522 | } | |
3523 | ||
7d0e672e RS |
3524 | if (inch > max_process_desc) |
3525 | max_process_desc = inch; | |
d0d6b7c5 | 3526 | |
e690ca94 KS |
3527 | tem = Fplist_member (contact, QCcoding); |
3528 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3529 | tem = Qnil; /* No error message (too late!). */ | |
3530 | ||
67918941 RS |
3531 | { |
3532 | /* Setup coding systems for communicating with the network stream. */ | |
dbf31225 | 3533 | struct gcpro gcpro1; |
67918941 RS |
3534 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
3535 | Lisp_Object coding_systems = Qt; | |
b93aacde | 3536 | Lisp_Object fargs[5], val; |
67918941 | 3537 | |
e690ca94 | 3538 | if (!NILP (tem)) |
6b61353c KH |
3539 | { |
3540 | val = XCAR (XCDR (tem)); | |
3541 | if (CONSP (val)) | |
3542 | val = XCAR (val); | |
3543 | } | |
e690ca94 | 3544 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3545 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3546 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3547 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3548 | /* We dare not decode end-of-line format by setting VAL to |
3549 | Qraw_text, because the existing Emacs Lisp libraries | |
9858f6c3 | 3550 | assume that they receive bare code including a sequence of |
67918941 RS |
3551 | CR LF. */ |
3552 | val = Qnil; | |
3553 | else | |
3554 | { | |
991234f0 KS |
3555 | if (NILP (host) || NILP (service)) |
3556 | coding_systems = Qnil; | |
3557 | else | |
3558 | { | |
b93aacde PE |
3559 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3560 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3561 | GCPRO1 (proc); |
b93aacde | 3562 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3563 | UNGCPRO; |
991234f0 | 3564 | } |
67918941 | 3565 | if (CONSP (coding_systems)) |
70949dac | 3566 | val = XCAR (coding_systems); |
67918941 | 3567 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3568 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3569 | else |
3570 | val = Qnil; | |
3571 | } | |
6a09a33b | 3572 | pset_decode_coding_system (p, val); |
0fa1789e | 3573 | |
e690ca94 | 3574 | if (!NILP (tem)) |
6b61353c KH |
3575 | { |
3576 | val = XCAR (XCDR (tem)); | |
3577 | if (CONSP (val)) | |
3578 | val = XCDR (val); | |
3579 | } | |
e690ca94 | 3580 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3581 | val = Vcoding_system_for_write; |
4b4deea2 | 3582 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3583 | val = Qnil; |
3584 | else | |
3585 | { | |
3586 | if (EQ (coding_systems, Qt)) | |
3587 | { | |
991234f0 KS |
3588 | if (NILP (host) || NILP (service)) |
3589 | coding_systems = Qnil; | |
3590 | else | |
3591 | { | |
b93aacde PE |
3592 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3593 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3594 | GCPRO1 (proc); |
b93aacde | 3595 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3596 | UNGCPRO; |
991234f0 | 3597 | } |
67918941 RS |
3598 | } |
3599 | if (CONSP (coding_systems)) | |
70949dac | 3600 | val = XCDR (coding_systems); |
67918941 | 3601 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3602 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3603 | else |
3604 | val = Qnil; | |
3605 | } | |
6a09a33b | 3606 | pset_encode_coding_system (p, val); |
67918941 | 3607 | } |
03f04413 | 3608 | setup_process_coding_systems (proc); |
0fa1789e | 3609 | |
6a09a33b | 3610 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 3611 | p->decoding_carryover = 0; |
6a09a33b | 3612 | pset_encoding_buf (p, empty_unibyte_string); |
0fa1789e | 3613 | |
e690ca94 | 3614 | p->inherit_coding_system_flag |
e6fca843 | 3615 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3616 | |
d0d6b7c5 JB |
3617 | UNGCPRO; |
3618 | return proc; | |
3619 | } | |
d0d6b7c5 | 3620 | |
6b61353c | 3621 | \f |
5e617bc2 | 3622 | #if defined (HAVE_NET_IF_H) |
6b61353c KH |
3623 | |
3624 | #ifdef SIOCGIFCONF | |
3625 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3626 | doc: /* Return an alist of all network interfaces and their network address. | |
3627 | Each element is a cons, the car of which is a string containing the | |
3628 | interface name, and the cdr is the network address in internal | |
3629 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3630 | (void) |
6b61353c KH |
3631 | { |
3632 | struct ifconf ifconf; | |
377538cb JD |
3633 | struct ifreq *ifreq; |
3634 | void *buf = NULL; | |
70c60eb2 PE |
3635 | ptrdiff_t buf_size = 512; |
3636 | int s, i; | |
6b61353c KH |
3637 | Lisp_Object res; |
3638 | ||
3639 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3640 | if (s < 0) | |
3641 | return Qnil; | |
3642 | ||
76667214 | 3643 | do |
6b61353c | 3644 | { |
76667214 PE |
3645 | buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1); |
3646 | ifconf.ifc_buf = buf; | |
3647 | ifconf.ifc_len = buf_size; | |
156bffbe AS |
3648 | if (ioctl (s, SIOCGIFCONF, &ifconf)) |
3649 | { | |
3650 | close (s); | |
76667214 | 3651 | xfree (buf); |
156bffbe AS |
3652 | return Qnil; |
3653 | } | |
6b61353c | 3654 | } |
76667214 | 3655 | while (ifconf.ifc_len == buf_size); |
6b61353c KH |
3656 | |
3657 | close (s); | |
6b61353c KH |
3658 | |
3659 | res = Qnil; | |
156bffbe AS |
3660 | ifreq = ifconf.ifc_req; |
3661 | while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len) | |
6b61353c | 3662 | { |
377538cb JD |
3663 | struct ifreq *ifq = ifreq; |
3664 | #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN | |
156bffbe AS |
3665 | #define SIZEOF_IFREQ(sif) \ |
3666 | ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \ | |
3667 | ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len) | |
377538cb JD |
3668 | |
3669 | int len = SIZEOF_IFREQ (ifq); | |
3670 | #else | |
3671 | int len = sizeof (*ifreq); | |
3672 | #endif | |
6b61353c | 3673 | char namebuf[sizeof (ifq->ifr_name) + 1]; |
377538cb | 3674 | i += len; |
156bffbe | 3675 | ifreq = (struct ifreq *) ((char *) ifreq + len); |
377538cb | 3676 | |
6b61353c KH |
3677 | if (ifq->ifr_addr.sa_family != AF_INET) |
3678 | continue; | |
377538cb | 3679 | |
72af86bd | 3680 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3681 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3682 | res = Fcons (Fcons (build_string (namebuf), | |
3683 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3684 | sizeof (struct sockaddr))), | |
3685 | res); | |
3686 | } | |
3687 | ||
377538cb | 3688 | xfree (buf); |
6b61353c KH |
3689 | return res; |
3690 | } | |
3691 | #endif /* SIOCGIFCONF */ | |
3692 | ||
5e617bc2 | 3693 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
6b61353c KH |
3694 | |
3695 | struct ifflag_def { | |
3696 | int flag_bit; | |
91433552 | 3697 | const char *flag_sym; |
6b61353c KH |
3698 | }; |
3699 | ||
91433552 | 3700 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3701 | #ifdef IFF_UP |
3702 | { IFF_UP, "up" }, | |
3703 | #endif | |
3704 | #ifdef IFF_BROADCAST | |
3705 | { IFF_BROADCAST, "broadcast" }, | |
3706 | #endif | |
3707 | #ifdef IFF_DEBUG | |
3708 | { IFF_DEBUG, "debug" }, | |
3709 | #endif | |
3710 | #ifdef IFF_LOOPBACK | |
3711 | { IFF_LOOPBACK, "loopback" }, | |
3712 | #endif | |
3713 | #ifdef IFF_POINTOPOINT | |
3714 | { IFF_POINTOPOINT, "pointopoint" }, | |
3715 | #endif | |
3716 | #ifdef IFF_RUNNING | |
3717 | { IFF_RUNNING, "running" }, | |
3718 | #endif | |
3719 | #ifdef IFF_NOARP | |
3720 | { IFF_NOARP, "noarp" }, | |
3721 | #endif | |
3722 | #ifdef IFF_PROMISC | |
3723 | { IFF_PROMISC, "promisc" }, | |
3724 | #endif | |
3725 | #ifdef IFF_NOTRAILERS | |
377538cb JD |
3726 | #ifdef NS_IMPL_COCOA |
3727 | /* Really means smart, notrailers is obsolete */ | |
3728 | { IFF_NOTRAILERS, "smart" }, | |
3729 | #else | |
6b61353c KH |
3730 | { IFF_NOTRAILERS, "notrailers" }, |
3731 | #endif | |
377538cb | 3732 | #endif |
6b61353c KH |
3733 | #ifdef IFF_ALLMULTI |
3734 | { IFF_ALLMULTI, "allmulti" }, | |
3735 | #endif | |
3736 | #ifdef IFF_MASTER | |
3737 | { IFF_MASTER, "master" }, | |
3738 | #endif | |
3739 | #ifdef IFF_SLAVE | |
3740 | { IFF_SLAVE, "slave" }, | |
3741 | #endif | |
3742 | #ifdef IFF_MULTICAST | |
3743 | { IFF_MULTICAST, "multicast" }, | |
3744 | #endif | |
3745 | #ifdef IFF_PORTSEL | |
3746 | { IFF_PORTSEL, "portsel" }, | |
3747 | #endif | |
3748 | #ifdef IFF_AUTOMEDIA | |
3749 | { IFF_AUTOMEDIA, "automedia" }, | |
3750 | #endif | |
3751 | #ifdef IFF_DYNAMIC | |
3752 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3753 | #endif |
2026418c YM |
3754 | #ifdef IFF_OACTIVE |
3755 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3756 | #endif |
3757 | #ifdef IFF_SIMPLEX | |
3758 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3759 | #endif | |
3760 | #ifdef IFF_LINK0 | |
3761 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3762 | #endif | |
3763 | #ifdef IFF_LINK1 | |
3764 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3765 | #endif | |
3766 | #ifdef IFF_LINK2 | |
3767 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3768 | #endif |
3769 | { 0, 0 } | |
3770 | }; | |
3771 | ||
3772 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3773 | doc: /* Return information about network interface named IFNAME. | |
3774 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3775 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
e4920bc9 | 3776 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and |
6b61353c | 3777 | FLAGS is the current flags of the interface. */) |
5842a27b | 3778 | (Lisp_Object ifname) |
6b61353c KH |
3779 | { |
3780 | struct ifreq rq; | |
3781 | Lisp_Object res = Qnil; | |
3782 | Lisp_Object elt; | |
3783 | int s; | |
3784 | int any = 0; | |
0a0d27fb PE |
3785 | #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \ |
3786 | && defined HAVE_GETIFADDRS && defined LLADDR) | |
377538cb JD |
3787 | struct ifaddrs *ifap; |
3788 | #endif | |
6b61353c KH |
3789 | |
3790 | CHECK_STRING (ifname); | |
3791 | ||
e99a530f PE |
3792 | if (sizeof rq.ifr_name <= SBYTES (ifname)) |
3793 | error ("interface name too long"); | |
3794 | strcpy (rq.ifr_name, SSDATA (ifname)); | |
6b61353c KH |
3795 | |
3796 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3797 | if (s < 0) | |
3798 | return Qnil; | |
3799 | ||
3800 | elt = Qnil; | |
5e617bc2 | 3801 | #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS) |
6b61353c KH |
3802 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3803 | { | |
3804 | int flags = rq.ifr_flags; | |
91433552 | 3805 | const struct ifflag_def *fp; |
6b61353c KH |
3806 | int fnum; |
3807 | ||
377538cb JD |
3808 | /* If flags is smaller than int (i.e. short) it may have the high bit set |
3809 | due to IFF_MULTICAST. In that case, sign extending it into | |
3810 | an int is wrong. */ | |
3811 | if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags)) | |
3812 | flags = (unsigned short) rq.ifr_flags; | |
3813 | ||
bc57d757 | 3814 | any = 1; |
82a80058 | 3815 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3816 | { |
3817 | if (flags & fp->flag_bit) | |
3818 | { | |
3819 | elt = Fcons (intern (fp->flag_sym), elt); | |
3820 | flags -= fp->flag_bit; | |
3821 | } | |
3822 | } | |
fa3c87e1 | 3823 | for (fnum = 0; flags && fnum < 32; flags >>= 1, fnum++) |
6b61353c | 3824 | { |
fa3c87e1 | 3825 | if (flags & 1) |
6b61353c KH |
3826 | { |
3827 | elt = Fcons (make_number (fnum), elt); | |
3828 | } | |
3829 | } | |
3830 | } | |
3831 | #endif | |
3832 | res = Fcons (elt, res); | |
3833 | ||
3834 | elt = Qnil; | |
5e617bc2 | 3835 | #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR) |
6b61353c KH |
3836 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3837 | { | |
3838 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3839 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3840 | int n; | |
3841 | ||
bc57d757 | 3842 | any = 1; |
6b61353c KH |
3843 | for (n = 0; n < 6; n++) |
3844 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3845 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3846 | } | |
5e617bc2 | 3847 | #elif defined (HAVE_GETIFADDRS) && defined (LLADDR) |
377538cb JD |
3848 | if (getifaddrs (&ifap) != -1) |
3849 | { | |
3850 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3851 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3852 | struct ifaddrs *it; | |
3853 | ||
3854 | for (it = ifap; it != NULL; it = it->ifa_next) | |
3855 | { | |
3856 | struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr; | |
3857 | unsigned char linkaddr[6]; | |
3858 | int n; | |
3859 | ||
3860 | if (it->ifa_addr->sa_family != AF_LINK | |
3861 | || strcmp (it->ifa_name, SSDATA (ifname)) != 0 | |
3862 | || sdl->sdl_alen != 6) | |
3863 | continue; | |
3864 | ||
5e617bc2 | 3865 | memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen); |
377538cb JD |
3866 | for (n = 0; n < 6; n++) |
3867 | p->contents[n] = make_number (linkaddr[n]); | |
3868 | ||
3869 | elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr); | |
3870 | break; | |
3871 | } | |
3872 | } | |
3873 | #ifdef HAVE_FREEIFADDRS | |
3874 | freeifaddrs (ifap); | |
6b61353c | 3875 | #endif |
377538cb JD |
3876 | |
3877 | #endif /* HAVE_GETIFADDRS && LLADDR */ | |
3878 | ||
6b61353c KH |
3879 | res = Fcons (elt, res); |
3880 | ||
3881 | elt = Qnil; | |
5e617bc2 | 3882 | #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3883 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3884 | { | |
bc57d757 | 3885 | any = 1; |
2026418c | 3886 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3887 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3888 | #else |
3889 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3890 | #endif | |
6b61353c KH |
3891 | } |
3892 | #endif | |
3893 | res = Fcons (elt, res); | |
3894 | ||
3895 | elt = Qnil; | |
5e617bc2 | 3896 | #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
6b61353c KH |
3897 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3898 | { | |
bc57d757 | 3899 | any = 1; |
6b61353c KH |
3900 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); |
3901 | } | |
3902 | #endif | |
3903 | res = Fcons (elt, res); | |
3904 | ||
3905 | elt = Qnil; | |
5e617bc2 | 3906 | #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR) |
6b61353c KH |
3907 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3908 | { | |
bc57d757 | 3909 | any = 1; |
6b61353c KH |
3910 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); |
3911 | } | |
3912 | #endif | |
3913 | res = Fcons (elt, res); | |
3914 | ||
3915 | close (s); | |
3916 | ||
3917 | return any ? res : Qnil; | |
3918 | } | |
3919 | #endif | |
5e617bc2 | 3920 | #endif /* defined (HAVE_NET_IF_H) */ |
6b61353c | 3921 | |
04391069 RS |
3922 | /* Turn off input and output for process PROC. */ |
3923 | ||
40ccffa6 | 3924 | static void |
d3da34e0 | 3925 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3926 | { |
3927 | register int inchannel, outchannel; | |
3928 | register struct Lisp_Process *p = XPROCESS (proc); | |
3929 | ||
9c6c6f49 CY |
3930 | #ifdef HAVE_GNUTLS |
3931 | /* Delete GnuTLS structures in PROC, if any. */ | |
3932 | emacs_gnutls_deinit (proc); | |
3933 | #endif /* HAVE_GNUTLS */ | |
3934 | ||
60f0fb11 SM |
3935 | inchannel = p->infd; |
3936 | outchannel = p->outfd; | |
d0d6b7c5 | 3937 | |
6b61353c | 3938 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3939 | if (p->read_output_delay > 0) |
6b61353c KH |
3940 | { |
3941 | if (--process_output_delay_count < 0) | |
3942 | process_output_delay_count = 0; | |
60f0fb11 SM |
3943 | p->read_output_delay = 0; |
3944 | p->read_output_skip = 0; | |
6b61353c KH |
3945 | } |
3946 | #endif | |
f3d9532b | 3947 | |
a9f2c884 | 3948 | if (inchannel >= 0) |
d0d6b7c5 JB |
3949 | { |
3950 | /* Beware SIGCHLD hereabouts. */ | |
3951 | flush_pending_output (inchannel); | |
68c45bf0 | 3952 | emacs_close (inchannel); |
a9f2c884 | 3953 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3954 | emacs_close (outchannel); |
d0d6b7c5 | 3955 | |
60f0fb11 SM |
3956 | p->infd = -1; |
3957 | p->outfd = -1; | |
e690ca94 KS |
3958 | #ifdef DATAGRAM_SOCKETS |
3959 | if (DATAGRAM_CHAN_P (inchannel)) | |
3960 | { | |
3961 | xfree (datagram_address[inchannel].sa); | |
3962 | datagram_address[inchannel].sa = 0; | |
3963 | datagram_address[inchannel].len = 0; | |
3964 | } | |
3965 | #endif | |
d0d6b7c5 JB |
3966 | chan_process[inchannel] = Qnil; |
3967 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3968 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3969 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3970 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3971 | { | |
3972 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 3973 | FD_CLR (inchannel, &write_mask); |
dd2a17ab | 3974 | if (--num_pending_connects < 0) |
1088b922 | 3975 | emacs_abort (); |
dd2a17ab | 3976 | } |
bad49fc7 | 3977 | #endif |
7d0e672e RS |
3978 | if (inchannel == max_process_desc) |
3979 | { | |
3980 | int i; | |
3981 | /* We just closed the highest-numbered process input descriptor, | |
3982 | so recompute the highest-numbered one now. */ | |
3983 | max_process_desc = 0; | |
3984 | for (i = 0; i < MAXDESC; i++) | |
3985 | if (!NILP (chan_process[i])) | |
3986 | max_process_desc = i; | |
3987 | } | |
d0d6b7c5 JB |
3988 | } |
3989 | } | |
3990 | ||
d0d6b7c5 JB |
3991 | \f |
3992 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3993 | 0, 4, 0, |
fdb82f93 PJ |
3994 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3995 | It is read into the process' buffers or given to their filter functions. | |
3996 | Non-nil arg PROCESS means do not return until some output has been received | |
3997 | from PROCESS. | |
5088da42 | 3998 | |
2a7bb882 MR |
3999 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
4000 | and milliseconds to wait; return after that much time whether or not | |
4001 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 4002 | it specifies a fractional number of seconds to wait. |
891bd142 | 4003 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 4004 | |
107ed38d KS |
4005 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
4006 | from PROCESS, suspending reading output from other processes. | |
4007 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 4008 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 4009 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 4010 | { |
d35af63c PE |
4011 | intmax_t secs; |
4012 | int nsecs; | |
d0d6b7c5 | 4013 | |
0748d150 | 4014 | if (! NILP (process)) |
b7826503 | 4015 | CHECK_PROCESS (process); |
107ed38d KS |
4016 | else |
4017 | just_this_one = Qnil; | |
0748d150 | 4018 | |
891bd142 SM |
4019 | if (!NILP (millisec)) |
4020 | { /* Obsolete calling convention using integers rather than floats. */ | |
4021 | CHECK_NUMBER (millisec); | |
4022 | if (NILP (seconds)) | |
4023 | seconds = make_float (XINT (millisec) / 1000.0); | |
4024 | else | |
4025 | { | |
4026 | CHECK_NUMBER (seconds); | |
4027 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
4028 | } | |
4029 | } | |
4030 | ||
d35af63c PE |
4031 | secs = 0; |
4032 | nsecs = -1; | |
4033 | ||
5088da42 | 4034 | if (!NILP (seconds)) |
d0d6b7c5 | 4035 | { |
d35af63c PE |
4036 | if (INTEGERP (seconds)) |
4037 | { | |
4038 | if (0 < XINT (seconds)) | |
4039 | { | |
4040 | secs = XINT (seconds); | |
4041 | nsecs = 0; | |
4042 | } | |
4043 | } | |
4044 | else if (FLOATP (seconds)) | |
4045 | { | |
4046 | if (0 < XFLOAT_DATA (seconds)) | |
4047 | { | |
4048 | EMACS_TIME t = EMACS_TIME_FROM_DOUBLE (XFLOAT_DATA (seconds)); | |
f1dd8073 | 4049 | secs = min (EMACS_SECS (t), WAIT_READING_MAX); |
d35af63c PE |
4050 | nsecs = EMACS_NSECS (t); |
4051 | } | |
4052 | } | |
4053 | else | |
4054 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 4055 | } |
d35af63c PE |
4056 | else if (! NILP (process)) |
4057 | nsecs = 0; | |
d0d6b7c5 JB |
4058 | |
4059 | return | |
d35af63c | 4060 | (wait_reading_process_output (secs, nsecs, 0, 0, |
214d6069 KS |
4061 | Qnil, |
4062 | !NILP (process) ? XPROCESS (process) : NULL, | |
4063 | NILP (just_this_one) ? 0 : | |
4064 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
4065 | ? Qt : Qnil); |
4066 | } | |
4067 | ||
e690ca94 KS |
4068 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4069 | ||
4070 | static int connect_counter = 0; | |
4071 | ||
4072 | static void | |
d3da34e0 | 4073 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4074 | { |
4075 | Lisp_Object proc, caller, name, buffer; | |
4076 | Lisp_Object contact, host, service; | |
4077 | struct Lisp_Process *ps= XPROCESS (server); | |
4078 | struct Lisp_Process *p; | |
4079 | int s; | |
4080 | union u_sockaddr { | |
4081 | struct sockaddr sa; | |
4082 | struct sockaddr_in in; | |
e1652a86 KS |
4083 | #ifdef AF_INET6 |
4084 | struct sockaddr_in6 in6; | |
4085 | #endif | |
e690ca94 KS |
4086 | #ifdef HAVE_LOCAL_SOCKETS |
4087 | struct sockaddr_un un; | |
4088 | #endif | |
4089 | } saddr; | |
401bf9b4 | 4090 | socklen_t len = sizeof saddr; |
e690ca94 KS |
4091 | |
4092 | s = accept (channel, &saddr.sa, &len); | |
4093 | ||
4094 | if (s < 0) | |
4095 | { | |
4096 | int code = errno; | |
4097 | ||
4098 | if (code == EAGAIN) | |
4099 | return; | |
4100 | #ifdef EWOULDBLOCK | |
4101 | if (code == EWOULDBLOCK) | |
4102 | return; | |
4103 | #endif | |
4104 | ||
4d2b044c DA |
4105 | if (!NILP (ps->log)) |
4106 | call3 (ps->log, server, Qnil, | |
e690ca94 KS |
4107 | concat3 (build_string ("accept failed with code"), |
4108 | Fnumber_to_string (make_number (code)), | |
4109 | build_string ("\n"))); | |
4110 | return; | |
4111 | } | |
4112 | ||
4113 | connect_counter++; | |
4114 | ||
4115 | /* Setup a new process to handle the connection. */ | |
4116 | ||
4117 | /* Generate a unique identification of the caller, and build contact | |
4118 | information for this process. */ | |
4119 | host = Qt; | |
4120 | service = Qnil; | |
4121 | switch (saddr.sa.sa_family) | |
4122 | { | |
4123 | case AF_INET: | |
4124 | { | |
4125 | Lisp_Object args[5]; | |
4126 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4127 | args[0] = build_string ("%d.%d.%d.%d"); | |
4128 | args[1] = make_number (*ip++); | |
4129 | args[2] = make_number (*ip++); | |
4130 | args[3] = make_number (*ip++); | |
4131 | args[4] = make_number (*ip++); | |
4132 | host = Fformat (5, args); | |
4133 | service = make_number (ntohs (saddr.in.sin_port)); | |
4134 | ||
4135 | args[0] = build_string (" <%s:%d>"); | |
4136 | args[1] = host; | |
4137 | args[2] = service; | |
4138 | caller = Fformat (3, args); | |
4139 | } | |
4140 | break; | |
4141 | ||
e1652a86 KS |
4142 | #ifdef AF_INET6 |
4143 | case AF_INET6: | |
4144 | { | |
4145 | Lisp_Object args[9]; | |
4146 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4147 | int i; | |
4148 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4149 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4150 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4151 | host = Fformat (9, args); |
4152 | service = make_number (ntohs (saddr.in.sin_port)); | |
4153 | ||
4154 | args[0] = build_string (" <[%s]:%d>"); | |
4155 | args[1] = host; | |
4156 | args[2] = service; | |
4157 | caller = Fformat (3, args); | |
4158 | } | |
4159 | break; | |
4160 | #endif | |
4161 | ||
e690ca94 KS |
4162 | #ifdef HAVE_LOCAL_SOCKETS |
4163 | case AF_LOCAL: | |
4164 | #endif | |
4165 | default: | |
4166 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4167 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4168 | break; |
4169 | } | |
4170 | ||
4171 | /* Create a new buffer name for this process if it doesn't have a | |
4172 | filter. The new buffer name is based on the buffer name or | |
4173 | process name of the server process concatenated with the caller | |
4174 | identification. */ | |
4175 | ||
4d2b044c | 4176 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) |
e690ca94 KS |
4177 | buffer = Qnil; |
4178 | else | |
4179 | { | |
4d2b044c | 4180 | buffer = ps->buffer; |
e690ca94 KS |
4181 | if (!NILP (buffer)) |
4182 | buffer = Fbuffer_name (buffer); | |
4183 | else | |
4d2b044c | 4184 | buffer = ps->name; |
e690ca94 KS |
4185 | if (!NILP (buffer)) |
4186 | { | |
4187 | buffer = concat2 (buffer, caller); | |
4188 | buffer = Fget_buffer_create (buffer); | |
4189 | } | |
4190 | } | |
4191 | ||
4192 | /* Generate a unique name for the new server process. Combine the | |
4193 | server process name with the caller identification. */ | |
4194 | ||
4d2b044c | 4195 | name = concat2 (ps->name, caller); |
e690ca94 KS |
4196 | proc = make_process (name); |
4197 | ||
4198 | chan_process[s] = proc; | |
4199 | ||
4200 | #ifdef O_NONBLOCK | |
4201 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4202 | #else | |
4203 | #ifdef O_NDELAY | |
4204 | fcntl (s, F_SETFL, O_NDELAY); | |
4205 | #endif | |
4206 | #endif | |
4207 | ||
4208 | p = XPROCESS (proc); | |
4209 | ||
4210 | /* Build new contact information for this setup. */ | |
4d2b044c | 4211 | contact = Fcopy_sequence (ps->childp); |
e690ca94 KS |
4212 | contact = Fplist_put (contact, QCserver, Qnil); |
4213 | contact = Fplist_put (contact, QChost, host); | |
4214 | if (!NILP (service)) | |
4215 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4216 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4217 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4218 | #ifdef HAVE_GETSOCKNAME | |
4219 | len = sizeof saddr; | |
2185db04 | 4220 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4221 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4222 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4223 | #endif | |
4224 | ||
6a09a33b PE |
4225 | pset_childp (p, contact); |
4226 | pset_plist (p, Fcopy_sequence (ps->plist)); | |
4227 | pset_type (p, Qnetwork); | |
ac4a7584 | 4228 | |
6a09a33b PE |
4229 | pset_buffer (p, buffer); |
4230 | pset_sentinel (p, ps->sentinel); | |
4231 | pset_filter (p, ps->filter); | |
4232 | pset_command (p, Qnil); | |
6bfd98e7 | 4233 | p->pid = 0; |
60f0fb11 SM |
4234 | p->infd = s; |
4235 | p->outfd = s; | |
6a09a33b | 4236 | pset_status (p, Qrun); |
e690ca94 KS |
4237 | |
4238 | /* Client processes for accepted connections are not stopped initially. */ | |
4d2b044c | 4239 | if (!EQ (p->filter, Qt)) |
e690ca94 KS |
4240 | { |
4241 | FD_SET (s, &input_wait_mask); | |
4242 | FD_SET (s, &non_keyboard_wait_mask); | |
4243 | } | |
4244 | ||
4245 | if (s > max_process_desc) | |
4246 | max_process_desc = s; | |
4247 | ||
177c0ea7 | 4248 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4249 | This seems to be the proper thing to do, as the coding system |
4250 | of the new process should reflect the settings at the time the | |
4251 | server socket was opened; not the current settings. */ | |
4252 | ||
6a09a33b PE |
4253 | pset_decode_coding_system (p, ps->decode_coding_system); |
4254 | pset_encode_coding_system (p, ps->encode_coding_system); | |
03f04413 | 4255 | setup_process_coding_systems (proc); |
e690ca94 | 4256 | |
6a09a33b | 4257 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 4258 | p->decoding_carryover = 0; |
6a09a33b | 4259 | pset_encoding_buf (p, empty_unibyte_string); |
e690ca94 KS |
4260 | |
4261 | p->inherit_coding_system_flag | |
60f0fb11 | 4262 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 | 4263 | |
4d2b044c DA |
4264 | if (!NILP (ps->log)) |
4265 | call3 (ps->log, server, proc, | |
e690ca94 KS |
4266 | concat3 (build_string ("accept from "), |
4267 | (STRINGP (host) ? host : build_string ("-")), | |
4268 | build_string ("\n"))); | |
4269 | ||
4d2b044c | 4270 | if (!NILP (p->sentinel)) |
177c0ea7 | 4271 | exec_sentinel (proc, |
e690ca94 KS |
4272 | concat3 (build_string ("open from "), |
4273 | (STRINGP (host) ? host : build_string ("-")), | |
4274 | build_string ("\n"))); | |
4275 | } | |
4276 | ||
d0d6b7c5 JB |
4277 | /* This variable is different from waiting_for_input in keyboard.c. |
4278 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4279 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4280 | for user-input when that process-filter was called. |
4281 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4282 | lisp code is being evalled. |
4283 | This is also used in record_asynch_buffer_change. | |
4284 | For that purpose, this must be 0 | |
214d6069 | 4285 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4286 | static int waiting_for_user_input_p; |
4287 | ||
2beb96f9 | 4288 | static Lisp_Object |
d3da34e0 | 4289 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4290 | { |
4291 | waiting_for_user_input_p = XINT (data); | |
4292 | return Qnil; | |
4293 | } | |
4294 | ||
c573ae8e | 4295 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4296 | static void |
d3da34e0 | 4297 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4298 | { |
4299 | } | |
4300 | ||
d0d6b7c5 JB |
4301 | /* Read and dispose of subprocess output while waiting for timeout to |
4302 | elapse and/or keyboard input to be available. | |
4303 | ||
de6fd4b9 | 4304 | TIME_LIMIT is: |
d35af63c PE |
4305 | timeout in seconds |
4306 | If negative, gobble data immediately available but don't wait for any. | |
d0d6b7c5 | 4307 | |
d35af63c PE |
4308 | NSECS is: |
4309 | an additional duration to wait, measured in nanoseconds | |
4310 | If TIME_LIMIT is zero, then: | |
4311 | If NSECS == 0, there is no limit. | |
d188e26b | 4312 | If NSECS > 0, the timeout consists of NSECS only. |
d35af63c | 4313 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
6e4f3667 | 4314 | |
a0bee46f | 4315 | READ_KBD is: |
d0d6b7c5 JB |
4316 | 0 to ignore keyboard input, or |
4317 | 1 to return when input is available, or | |
84aa3ace | 4318 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4319 | the quit handler, or |
d0d6b7c5 | 4320 | |
de6fd4b9 | 4321 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4322 | output that arrives. |
d0d6b7c5 | 4323 | |
b89a415a KS |
4324 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4325 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4326 | |
b89a415a | 4327 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4328 | process. The return value is true if we read some input from |
b89a415a KS |
4329 | that process. |
4330 | ||
4331 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4332 | (suspending output from other processes). A negative value | |
4333 | means don't run any timers either. | |
4334 | ||
e0f24100 | 4335 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4336 | received input from that process before the timeout elapsed. |
e0f24100 | 4337 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4338 | |
dfcf069d | 4339 | int |
d35af63c | 4340 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
d5a3eaaf AS |
4341 | int do_display, |
4342 | Lisp_Object wait_for_cell, | |
4343 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4344 | { |
41d03b9a | 4345 | register int channel, nfds; |
855448dc | 4346 | SELECT_TYPE Available; |
3fad2ad2 J |
4347 | SELECT_TYPE Writeok; |
4348 | int check_write; | |
bad49fc7 | 4349 | int check_delay, no_avail; |
d0d6b7c5 JB |
4350 | int xerrno; |
4351 | Lisp_Object proc; | |
41d03b9a | 4352 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4353 | int wait_channel = -1; |
d0d6b7c5 | 4354 | int got_some_input = 0; |
d311d28c | 4355 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4356 | |
4357 | FD_ZERO (&Available); | |
3fad2ad2 | 4358 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4359 | |
d35af63c | 4360 | if (time_limit == 0 && nsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
4d2b044c DA |
4361 | && !(CONSP (wait_proc->status) |
4362 | && EQ (XCAR (wait_proc->status), Qexit))) | |
2b0a91e7 SM |
4363 | message ("Blocking call to accept-process-output with quit inhibited!!"); |
4364 | ||
b89a415a KS |
4365 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4366 | if (wait_proc != NULL) | |
60f0fb11 | 4367 | wait_channel = wait_proc->infd; |
84aa3ace | 4368 | |
2beb96f9 KS |
4369 | record_unwind_protect (wait_reading_process_output_unwind, |
4370 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4371 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 | 4372 | |
d35af63c PE |
4373 | if (time_limit < 0) |
4374 | { | |
4375 | time_limit = 0; | |
4376 | nsecs = -1; | |
4377 | } | |
4378 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
4379 | time_limit = TYPE_MAXIMUM (time_t); | |
4380 | ||
d0d6b7c5 JB |
4381 | /* Since we may need to wait several times, |
4382 | compute the absolute time to return at. */ | |
216ee680 | 4383 | if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4384 | { |
e9a9ae03 PE |
4385 | timeout = make_emacs_time (time_limit, nsecs); |
4386 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
d0d6b7c5 JB |
4387 | } |
4388 | ||
d0d6b7c5 JB |
4389 | while (1) |
4390 | { | |
c0239a0b RS |
4391 | int timeout_reduced_for_timers = 0; |
4392 | ||
d0d6b7c5 JB |
4393 | /* If calling from keyboard input, do not quit |
4394 | since we want to return C-g as an input character. | |
4395 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4396 | if (read_kbd >= 0) |
d0d6b7c5 | 4397 | QUIT; |
6b61353c | 4398 | #ifdef SYNC_INPUT |
ef5eb925 | 4399 | else |
c3eff1b0 | 4400 | process_pending_signals (); |
6b61353c | 4401 | #endif |
d0d6b7c5 | 4402 | |
889255b4 | 4403 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4404 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4405 | break; |
4406 | ||
d0d6b7c5 JB |
4407 | /* Compute time from now till when time limit is up */ |
4408 | /* Exit if already run out */ | |
d35af63c | 4409 | if (nsecs < 0) |
d0d6b7c5 | 4410 | { |
216ee680 | 4411 | /* A negative timeout means |
d0d6b7c5 JB |
4412 | gobble output available now |
4413 | but don't wait at all. */ | |
4414 | ||
e9a9ae03 | 4415 | timeout = make_emacs_time (0, 0); |
d0d6b7c5 | 4416 | } |
216ee680 | 4417 | else if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4418 | { |
e9a9ae03 PE |
4419 | EMACS_TIME now = current_emacs_time (); |
4420 | if (EMACS_TIME_LE (end_time, now)) | |
d0d6b7c5 | 4421 | break; |
e9a9ae03 | 4422 | timeout = sub_emacs_time (end_time, now); |
d0d6b7c5 JB |
4423 | } |
4424 | else | |
4425 | { | |
e9a9ae03 | 4426 | timeout = make_emacs_time (100000, 0); |
d0d6b7c5 JB |
4427 | } |
4428 | ||
f854a00b RS |
4429 | /* Normally we run timers here. |
4430 | But not if wait_for_cell; in those cases, | |
4431 | the wait is supposed to be short, | |
4432 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4433 | if (NILP (wait_for_cell) |
b89a415a | 4434 | && just_wait_proc >= 0) |
fb4c3627 | 4435 | { |
c0239a0b | 4436 | EMACS_TIME timer_delay; |
c573ae8e | 4437 | |
9baacf76 | 4438 | do |
c573ae8e | 4439 | { |
9baacf76 | 4440 | int old_timers_run = timers_run; |
c88164fe | 4441 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4442 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4443 | |
f868cd8a | 4444 | timer_delay = timer_check (); |
a2fab450 GM |
4445 | |
4446 | /* If a timer has run, this might have changed buffers | |
4447 | an alike. Make read_key_sequence aware of that. */ | |
4448 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4449 | && (old_buffer != current_buffer |
4450 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4451 | && waiting_for_user_input_p == -1) |
4452 | record_asynch_buffer_change (); | |
177c0ea7 | 4453 | |
9baacf76 GM |
4454 | if (timers_run != old_timers_run && do_display) |
4455 | /* We must retry, since a timer may have requeued itself | |
4456 | and that could alter the time_delay. */ | |
3007ebfb | 4457 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4458 | else |
4459 | break; | |
c573ae8e | 4460 | } |
9baacf76 | 4461 | while (!detect_input_pending ()); |
c573ae8e | 4462 | |
69645afc | 4463 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4464 | if (read_kbd != 0 |
69645afc RS |
4465 | && requeued_events_pending_p ()) |
4466 | break; | |
4467 | ||
216ee680 | 4468 | /* A negative timeout means do not wait at all. */ |
d35af63c | 4469 | if (0 <= nsecs) |
fb4c3627 | 4470 | { |
d35af63c | 4471 | if (EMACS_TIME_VALID_P (timer_delay)) |
c0239a0b | 4472 | { |
d35af63c PE |
4473 | if (EMACS_TIME_LT (timer_delay, timeout)) |
4474 | { | |
4475 | timeout = timer_delay; | |
4476 | timeout_reduced_for_timers = 1; | |
4477 | } | |
4478 | } | |
4479 | else | |
4480 | { | |
4481 | /* This is so a breakpoint can be put here. */ | |
4482 | wait_reading_process_output_1 (); | |
c0239a0b | 4483 | } |
c573ae8e | 4484 | } |
fb4c3627 RS |
4485 | } |
4486 | ||
90ab1a81 JB |
4487 | /* Cause C-g and alarm signals to take immediate action, |
4488 | and cause input available signals to zero out timeout. | |
4489 | ||
4490 | It is important that we do this before checking for process | |
4491 | activity. If we get a SIGCHLD after the explicit checks for | |
4492 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4493 | if (read_kbd < 0) |
90ab1a81 JB |
4494 | set_waiting_for_input (&timeout); |
4495 | ||
6be429b1 JB |
4496 | /* If status of something has changed, and no input is |
4497 | available, notify the user of the change right away. After | |
4498 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4499 | timeout to get our attention. */ |
4500 | if (update_tick != process_tick) | |
6be429b1 | 4501 | { |
bad49fc7 | 4502 | SELECT_TYPE Atemp; |
bad49fc7 | 4503 | SELECT_TYPE Ctemp; |
dd2a17ab | 4504 | |
cb768704 J |
4505 | if (kbd_on_hold_p ()) |
4506 | FD_ZERO (&Atemp); | |
4507 | else | |
4508 | Atemp = input_wait_mask; | |
3fad2ad2 | 4509 | Ctemp = write_mask; |
bad49fc7 | 4510 | |
e9a9ae03 | 4511 | timeout = make_emacs_time (0, 0); |
d35af63c PE |
4512 | if ((pselect (max (max_process_desc, max_input_desc) + 1, |
4513 | &Atemp, | |
bad49fc7 | 4514 | #ifdef NON_BLOCKING_CONNECT |
d35af63c | 4515 | (num_pending_connects > 0 ? &Ctemp : NULL), |
bad49fc7 | 4516 | #else |
d35af63c | 4517 | NULL, |
bad49fc7 | 4518 | #endif |
d35af63c | 4519 | NULL, &timeout, NULL) |
ecd1f654 | 4520 | <= 0)) |
90ab1a81 JB |
4521 | { |
4522 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4523 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4524 | clear_waiting_for_input (); |
ff6daed3 | 4525 | status_notify (NULL); |
e42bdf01 | 4526 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4527 | } |
6be429b1 JB |
4528 | } |
4529 | ||
dd2a17ab | 4530 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4531 | read whatever data has already been received. */ |
6bfd98e7 | 4532 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4533 | update_status (wait_proc); |
6bfd98e7 | 4534 | if (wait_proc |
4d2b044c DA |
4535 | && ! EQ (wait_proc->status, Qrun) |
4536 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4537 | { |
215b45e9 | 4538 | int nread, total_nread = 0; |
7ce63188 | 4539 | |
9aa2a7f4 | 4540 | clear_waiting_for_input (); |
7ce63188 RS |
4541 | XSETPROCESS (proc, wait_proc); |
4542 | ||
4543 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4544 | while (wait_proc->infd >= 0) |
215b45e9 | 4545 | { |
60f0fb11 | 4546 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4547 | |
4548 | if (nread == 0) | |
4549 | break; | |
4550 | ||
63136da6 AS |
4551 | if (0 < nread) |
4552 | { | |
891bd142 SM |
4553 | total_nread += nread; |
4554 | got_some_input = 1; | |
4555 | } | |
215b45e9 RS |
4556 | #ifdef EIO |
4557 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4558 | break; |
e1b37c34 GM |
4559 | #endif |
4560 | #ifdef EAGAIN | |
4561 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4562 | break; |
e1b37c34 GM |
4563 | #endif |
4564 | #ifdef EWOULDBLOCK | |
4565 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4566 | break; |
215b45e9 RS |
4567 | #endif |
4568 | } | |
7ce63188 | 4569 | if (total_nread > 0 && do_display) |
3007ebfb | 4570 | redisplay_preserve_echo_area (10); |
7ce63188 | 4571 | |
9aa2a7f4 JB |
4572 | break; |
4573 | } | |
6be429b1 | 4574 | |
d0d6b7c5 JB |
4575 | /* Wait till there is something to do */ |
4576 | ||
b89a415a | 4577 | if (wait_proc && just_wait_proc) |
107ed38d | 4578 | { |
60f0fb11 | 4579 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4580 | break; |
60f0fb11 | 4581 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4582 | check_delay = 0; |
3fad2ad2 | 4583 | check_write = 0; |
107ed38d KS |
4584 | } |
4585 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4586 | { |
4587 | Available = non_process_wait_mask; | |
bad49fc7 | 4588 | check_delay = 0; |
3fad2ad2 | 4589 | check_write = 0; |
dd2a17ab | 4590 | } |
a69281ff | 4591 | else |
dd2a17ab | 4592 | { |
b89a415a | 4593 | if (! read_kbd) |
dd2a17ab KS |
4594 | Available = non_keyboard_wait_mask; |
4595 | else | |
4596 | Available = input_wait_mask; | |
3fad2ad2 | 4597 | Writeok = write_mask; |
82d6e50b J |
4598 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4599 | check_write = 0; | |
4600 | #else | |
3fad2ad2 | 4601 | check_write = 1; |
82d6e50b | 4602 | #endif |
6b61353c | 4603 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4604 | } |
d0d6b7c5 | 4605 | |
ff11dfa1 | 4606 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4607 | redisplay now, before we start to wait. There is a race |
4608 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4609 | and indicates that a frame is trashed, the select may block |
4610 | displaying a trashed screen. */ | |
5164ee8e | 4611 | if (frame_garbaged && do_display) |
7286affd RS |
4612 | { |
4613 | clear_waiting_for_input (); | |
3007ebfb | 4614 | redisplay_preserve_echo_area (11); |
b89a415a | 4615 | if (read_kbd < 0) |
7efe788e | 4616 | set_waiting_for_input (&timeout); |
7286affd | 4617 | } |
ffd56f97 | 4618 | |
029529ac CY |
4619 | /* Skip the `select' call if input is available and we're |
4620 | waiting for keyboard input or a cell change (which can be | |
4621 | triggered by processing X events). In the latter case, set | |
4622 | nfds to 1 to avoid breaking the loop. */ | |
dd2a17ab | 4623 | no_avail = 0; |
029529ac CY |
4624 | if ((read_kbd || !NILP (wait_for_cell)) |
4625 | && detect_input_pending ()) | |
0a65b032 | 4626 | { |
029529ac | 4627 | nfds = read_kbd ? 0 : 1; |
dd2a17ab | 4628 | no_avail = 1; |
0a65b032 | 4629 | } |
029529ac CY |
4630 | |
4631 | if (!no_avail) | |
dd2a17ab | 4632 | { |
6b61353c KH |
4633 | |
4634 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4635 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4636 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4637 | read_output_delay, and we are not reading output for a |
4638 | specific wait_channel. It is not executed if | |
4639 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4640 | if (process_output_skip && check_delay > 0) |
4641 | { | |
d35af63c PE |
4642 | int nsecs = EMACS_NSECS (timeout); |
4643 | if (EMACS_SECS (timeout) > 0 || nsecs > READ_OUTPUT_DELAY_MAX) | |
4644 | nsecs = READ_OUTPUT_DELAY_MAX; | |
6b61353c KH |
4645 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) |
4646 | { | |
4647 | proc = chan_process[channel]; | |
4648 | if (NILP (proc)) | |
4649 | continue; | |
db853b7a | 4650 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4651 | processes with non-zero read_output_skip. */ |
4652 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4653 | { |
4654 | check_delay--; | |
60f0fb11 | 4655 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4656 | continue; |
4657 | FD_CLR (channel, &Available); | |
60f0fb11 | 4658 | XPROCESS (proc)->read_output_skip = 0; |
d35af63c PE |
4659 | if (XPROCESS (proc)->read_output_delay < nsecs) |
4660 | nsecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4661 | } |
4662 | } | |
e9a9ae03 | 4663 | timeout = make_emacs_time (0, nsecs); |
6b61353c KH |
4664 | process_output_skip = 0; |
4665 | } | |
4666 | #endif | |
0949d2b6 | 4667 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 JD |
4668 | nfds = xg_select |
4669 | #elif defined (HAVE_NS) | |
63136da6 | 4670 | nfds = ns_select |
edfda783 | 4671 | #else |
d35af63c | 4672 | nfds = pselect |
edfda783 | 4673 | #endif |
3fad2ad2 J |
4674 | (max (max_process_desc, max_input_desc) + 1, |
4675 | &Available, | |
4676 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
d35af63c | 4677 | NULL, &timeout, NULL); |
e061a11b TZ |
4678 | |
4679 | #ifdef HAVE_GNUTLS | |
4680 | /* GnuTLS buffers data internally. In lowat mode it leaves | |
4681 | some data in the TCP buffers so that select works, but | |
4682 | with custom pull/push functions we need to check if some | |
4683 | data is available in the buffers manually. */ | |
261b6fd4 LMI |
4684 | if (nfds == 0) |
4685 | { | |
4686 | if (! wait_proc) | |
4687 | { | |
4688 | /* We're not waiting on a specific process, so loop | |
16c1ad08 LMI |
4689 | through all the channels and check for data. |
4690 | This is a workaround needed for some versions of | |
4691 | the gnutls library -- 2.12.14 has been confirmed | |
4692 | to need it. See | |
4693 | http://comments.gmane.org/gmane.emacs.devel/145074 */ | |
261b6fd4 | 4694 | for (channel = 0; channel < MAXDESC; ++channel) |
5b76caa4 PE |
4695 | if (! NILP (chan_process[channel])) |
4696 | { | |
4697 | struct Lisp_Process *p = | |
4698 | XPROCESS (chan_process[channel]); | |
4699 | if (p && p->gnutls_p && p->infd | |
4700 | && ((emacs_gnutls_record_check_pending | |
4701 | (p->gnutls_state)) | |
4702 | > 0)) | |
4703 | { | |
4704 | nfds++; | |
4705 | FD_SET (p->infd, &Available); | |
4706 | } | |
4707 | } | |
261b6fd4 LMI |
4708 | } |
4709 | else | |
4710 | { | |
4711 | /* Check this specific channel. */ | |
5b76caa4 | 4712 | if (wait_proc->gnutls_p /* Check for valid process. */ |
261b6fd4 | 4713 | /* Do we have pending data? */ |
5b76caa4 PE |
4714 | && ((emacs_gnutls_record_check_pending |
4715 | (wait_proc->gnutls_state)) | |
4716 | > 0)) | |
261b6fd4 LMI |
4717 | { |
4718 | nfds = 1; | |
4719 | /* Set to Available. */ | |
4720 | FD_SET (wait_proc->infd, &Available); | |
4721 | } | |
4722 | } | |
4723 | } | |
e061a11b | 4724 | #endif |
dd2a17ab | 4725 | } |
6720a7fb | 4726 | |
d0d6b7c5 JB |
4727 | xerrno = errno; |
4728 | ||
4729 | /* Make C-g and alarm signals set flags again */ | |
4730 | clear_waiting_for_input (); | |
4731 | ||
4732 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4733 | do_pending_window_change (0); |
d0d6b7c5 | 4734 | |
d35af63c | 4735 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
216ee680 | 4736 | /* We waited the full specified time, so return now. */ |
d0d6b7c5 JB |
4737 | break; |
4738 | if (nfds < 0) | |
4739 | { | |
4740 | if (xerrno == EINTR) | |
dd2a17ab | 4741 | no_avail = 1; |
d0d6b7c5 JB |
4742 | else if (xerrno == EBADF) |
4743 | { | |
4744 | #ifdef AIX | |
4745 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4746 | the child's closure of the pts gives the parent a SIGHUP, and | |
4747 | the ptc file descriptor is automatically closed, | |
4748 | yielding EBADF here or at select() call above. | |
4749 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4750 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4751 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4752 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 | 4753 | #else |
1088b922 | 4754 | emacs_abort (); |
d0d6b7c5 JB |
4755 | #endif |
4756 | } | |
4757 | else | |
68c45bf0 | 4758 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4759 | } |
dd2a17ab KS |
4760 | |
4761 | if (no_avail) | |
4762 | { | |
4763 | FD_ZERO (&Available); | |
3fad2ad2 | 4764 | check_write = 0; |
dd2a17ab KS |
4765 | } |
4766 | ||
5d5beb62 RS |
4767 | #if 0 /* When polling is used, interrupt_input is 0, |
4768 | so get_input_pending should read the input. | |
4769 | So this should not be needed. */ | |
4770 | /* If we are using polling for input, | |
4771 | and we see input available, make it get read now. | |
4772 | Otherwise it might not actually get read for a second. | |
214d6069 | 4773 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4774 | it might never get read at all if we don't spend much time |
214d6069 | 4775 | outside of wait_reading_process_output. */ |
b89a415a | 4776 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4777 | && keyboard_bit_set (&Available) |
4778 | && input_polling_used ()) | |
4779 | kill (getpid (), SIGALRM); | |
4780 | #endif | |
4781 | ||
d0d6b7c5 JB |
4782 | /* Check for keyboard input */ |
4783 | /* If there is any, return immediately | |
4784 | to give it higher priority than subprocesses */ | |
4785 | ||
b89a415a | 4786 | if (read_kbd != 0) |
6ed6233b | 4787 | { |
a2fab450 | 4788 | int old_timers_run = timers_run; |
c88164fe | 4789 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4790 | Lisp_Object old_window = selected_window; |
a2fab450 | 4791 | int leave = 0; |
177c0ea7 | 4792 | |
5d6c2aa3 | 4793 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4794 | { |
4795 | swallow_events (do_display); | |
4796 | if (detect_input_pending_run_timers (do_display)) | |
4797 | leave = 1; | |
4798 | } | |
6ed6233b | 4799 | |
a2fab450 GM |
4800 | /* If a timer has run, this might have changed buffers |
4801 | an alike. Make read_key_sequence aware of that. */ | |
4802 | if (timers_run != old_timers_run | |
c88164fe | 4803 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4804 | && (old_buffer != current_buffer |
4805 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4806 | record_asynch_buffer_change (); |
4807 | ||
4808 | if (leave) | |
4809 | break; | |
177c0ea7 JB |
4810 | } |
4811 | ||
69645afc | 4812 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4813 | if (read_kbd != 0 |
69645afc RS |
4814 | && requeued_events_pending_p ()) |
4815 | break; | |
4816 | ||
77e1b3d4 RS |
4817 | /* If we are not checking for keyboard input now, |
4818 | do process events (but don't run any timers). | |
4819 | This is so that X events will be processed. | |
0c9960e9 | 4820 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4821 | That would causes delays in pasting selections, for example. |
4822 | ||
4823 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4824 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4825 | { |
4826 | swallow_events (do_display); | |
0c9960e9 | 4827 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4828 | if (detect_input_pending ()) |
4829 | break; | |
5d5beb62 | 4830 | #endif |
0c9960e9 | 4831 | } |
f854a00b | 4832 | |
84aa3ace | 4833 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4834 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4835 | break; |
4836 | ||
4a4bbad2 | 4837 | #ifdef USABLE_SIGIO |
5d5beb62 | 4838 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4839 | go read it. This can happen with X on BSD after logging out. |
4840 | In that case, there really is no input and no SIGIO, | |
4841 | but select says there is input. */ | |
4842 | ||
b89a415a | 4843 | if (read_kbd && interrupt_input |
2601f59e | 4844 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4845 | kill (getpid (), SIGIO); |
4746118a | 4846 | #endif |
d0d6b7c5 | 4847 | |
d0d6b7c5 JB |
4848 | if (! wait_proc) |
4849 | got_some_input |= nfds > 0; | |
4850 | ||
32676c08 JB |
4851 | /* If checking input just got us a size-change event from X, |
4852 | obey it now if we should. */ | |
b89a415a | 4853 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4854 | do_pending_window_change (0); |
32676c08 | 4855 | |
a9f2c884 | 4856 | /* Check for data from a process. */ |
dd2a17ab KS |
4857 | if (no_avail || nfds == 0) |
4858 | continue; | |
4859 | ||
3fad2ad2 J |
4860 | for (channel = 0; channel <= max_input_desc; ++channel) |
4861 | { | |
4862 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
de1339b0 PE |
4863 | if (d->func |
4864 | && ((d->condition & FOR_READ | |
4865 | && FD_ISSET (channel, &Available)) | |
4866 | || (d->condition & FOR_WRITE | |
4867 | && FD_ISSET (channel, &write_mask)))) | |
4868 | d->func (channel, d->data); | |
4869 | } | |
3fad2ad2 | 4870 | |
a69281ff | 4871 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4872 | { |
a69281ff | 4873 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4874 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4875 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4876 | { |
4877 | int nread; | |
4878 | ||
4879 | /* If waiting for this channel, arrange to return as | |
4880 | soon as no more input to be processed. No more | |
4881 | waiting. */ | |
4882 | if (wait_channel == channel) | |
4883 | { | |
a9f2c884 | 4884 | wait_channel = -1; |
d35af63c | 4885 | nsecs = -1; |
d0d6b7c5 JB |
4886 | got_some_input = 1; |
4887 | } | |
4888 | proc = chan_process[channel]; | |
4889 | if (NILP (proc)) | |
4890 | continue; | |
4891 | ||
e690ca94 | 4892 | /* If this is a server stream socket, accept connection. */ |
4d2b044c | 4893 | if (EQ (XPROCESS (proc)->status, Qlisten)) |
e690ca94 KS |
4894 | { |
4895 | server_accept_connection (proc, channel); | |
4896 | continue; | |
4897 | } | |
4898 | ||
d0d6b7c5 JB |
4899 | /* Read data from the process, starting with our |
4900 | buffered-ahead character if we have one. */ | |
4901 | ||
4902 | nread = read_process_output (proc, channel); | |
4903 | if (nread > 0) | |
4904 | { | |
4905 | /* Since read_process_output can run a filter, | |
4906 | which can call accept-process-output, | |
4907 | don't try to read from any other processes | |
4908 | before doing the select again. */ | |
4909 | FD_ZERO (&Available); | |
4910 | ||
4911 | if (do_display) | |
3007ebfb | 4912 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4913 | } |
4914 | #ifdef EWOULDBLOCK | |
4915 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4916 | ; | |
0b75e9a4 | 4917 | #endif |
89d7280d RS |
4918 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4919 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4920 | #ifdef O_NONBLOCK |
4921 | else if (nread == -1 && errno == EAGAIN) | |
4922 | ; | |
4923 | #else | |
4924 | #ifdef O_NDELAY | |
4925 | else if (nread == -1 && errno == EAGAIN) | |
4926 | ; | |
4927 | /* Note that we cannot distinguish between no input | |
4928 | available now and a closed pipe. | |
4929 | With luck, a closed pipe will be accompanied by | |
4930 | subprocess termination and SIGCHLD. */ | |
d888760c | 4931 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4932 | ; |
4740825c KS |
4933 | #endif /* O_NDELAY */ |
4934 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4935 | #ifdef HAVE_PTYS |
4936 | /* On some OSs with ptys, when the process on one end of | |
4937 | a pty exits, the other end gets an error reading with | |
4938 | errno = EIO instead of getting an EOF (0 bytes read). | |
4939 | Therefore, if we get an error reading and errno = | |
4940 | EIO, just continue, because the child process has | |
4941 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4942 | get a SIGCHLD). |
4943 | ||
4944 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4945 | got lost. So raise the signal again just in case. |
5651af6d | 4946 | It can't hurt. */ |
d0d6b7c5 | 4947 | else if (nread == -1 && errno == EIO) |
4740825c | 4948 | { |
f30d612a CY |
4949 | struct Lisp_Process *p = XPROCESS (proc); |
4950 | ||
4951 | /* Clear the descriptor now, so we only raise the | |
4952 | signal once. */ | |
4953 | FD_CLR (channel, &input_wait_mask); | |
4954 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4955 | ||
4956 | if (p->pid == -2) | |
4957 | { | |
20ef56db PE |
4958 | /* If the EIO occurs on a pty, the SIGCHLD handler's |
4959 | waitpid call will not find the process object to | |
f30d612a CY |
4960 | delete. Do it here. */ |
4961 | p->tick = ++process_tick; | |
6a09a33b | 4962 | pset_status (p, Qfailed); |
f30d612a CY |
4963 | } |
4964 | else | |
4965 | kill (getpid (), SIGCHLD); | |
4740825c KS |
4966 | } |
4967 | #endif /* HAVE_PTYS */ | |
5063c0e1 TN |
4968 | /* If we can detect process termination, don't consider the |
4969 | process gone just because its pipe is closed. */ | |
d0d6b7c5 | 4970 | #ifdef SIGCHLD |
d888760c | 4971 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4972 | ; |
4973 | #endif | |
4974 | else | |
4975 | { | |
4976 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4977 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4978 | deactivate_process (proc); |
6bfd98e7 | 4979 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 | 4980 | update_status (XPROCESS (proc)); |
4d2b044c | 4981 | if (EQ (XPROCESS (proc)->status, Qrun)) |
6a09a33b PE |
4982 | pset_status (XPROCESS (proc), |
4983 | list2 (Qexit, make_number (256))); | |
d0d6b7c5 JB |
4984 | } |
4985 | } | |
177c0ea7 | 4986 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 4987 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 4988 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
4989 | { |
4990 | struct Lisp_Process *p; | |
dd2a17ab KS |
4991 | |
4992 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 4993 | FD_CLR (channel, &write_mask); |
dd2a17ab | 4994 | if (--num_pending_connects < 0) |
1088b922 | 4995 | emacs_abort (); |
dd2a17ab KS |
4996 | |
4997 | proc = chan_process[channel]; | |
4998 | if (NILP (proc)) | |
4999 | continue; | |
5000 | ||
5001 | p = XPROCESS (proc); | |
5002 | ||
5003 | #ifdef GNU_LINUX | |
5004 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 5005 | So only use it on systems where it is known to work. */ |
dd2a17ab | 5006 | { |
401bf9b4 | 5007 | socklen_t xlen = sizeof (xerrno); |
ed3751c8 | 5008 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
dd2a17ab KS |
5009 | xerrno = errno; |
5010 | } | |
5011 | #else | |
44c887be PJ |
5012 | { |
5013 | struct sockaddr pname; | |
ed3751c8 | 5014 | int pnamelen = sizeof (pname); |
44c887be PJ |
5015 | |
5016 | /* If connection failed, getpeername will fail. */ | |
5017 | xerrno = 0; | |
ed3751c8 | 5018 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
5019 | { |
5020 | /* Obtain connect failure code through error slippage. */ | |
5021 | char dummy; | |
dd2a17ab | 5022 | xerrno = errno; |
ed3751c8 | 5023 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
5024 | xerrno = errno; |
5025 | } | |
5026 | } | |
dd2a17ab KS |
5027 | #endif |
5028 | if (xerrno) | |
5029 | { | |
60f0fb11 | 5030 | p->tick = ++process_tick; |
6a09a33b | 5031 | pset_status (p, list2 (Qfailed, make_number (xerrno))); |
dd2a17ab KS |
5032 | deactivate_process (proc); |
5033 | } | |
5034 | else | |
5035 | { | |
6a09a33b | 5036 | pset_status (p, Qrun); |
dd2a17ab KS |
5037 | /* Execute the sentinel here. If we had relied on |
5038 | status_notify to do it later, it will read input | |
5039 | from the process before calling the sentinel. */ | |
5040 | exec_sentinel (proc, build_string ("open\n")); | |
4d2b044c | 5041 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 5042 | { |
60f0fb11 SM |
5043 | FD_SET (p->infd, &input_wait_mask); |
5044 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
5045 | } |
5046 | } | |
5047 | } | |
5048 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
5049 | } /* end for each file descriptor */ |
5050 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 5051 | |
2beb96f9 | 5052 | unbind_to (count, Qnil); |
d430ee71 | 5053 | |
ffd56f97 JB |
5054 | /* If calling from keyboard input, do not quit |
5055 | since we want to return C-g as an input character. | |
5056 | Otherwise, do pending quit if requested. */ | |
b89a415a | 5057 | if (read_kbd >= 0) |
ffd56f97 JB |
5058 | { |
5059 | /* Prevent input_pending from remaining set if we quit. */ | |
5060 | clear_input_pending (); | |
5061 | QUIT; | |
5062 | } | |
efa2a55c | 5063 | |
d0d6b7c5 JB |
5064 | return got_some_input; |
5065 | } | |
5066 | \f | |
3b9a3dfa RS |
5067 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
5068 | ||
5069 | static Lisp_Object | |
d3da34e0 | 5070 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5071 | { |
70949dac | 5072 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5073 | } |
5074 | ||
5075 | static Lisp_Object | |
b93aacde | 5076 | read_process_output_error_handler (Lisp_Object error_val) |
3b9a3dfa | 5077 | { |
b93aacde | 5078 | cmd_error_internal (error_val, "error in process filter: "); |
3b9a3dfa RS |
5079 | Vinhibit_quit = Qt; |
5080 | update_echo_area (); | |
833ba342 | 5081 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5082 | return Qt; |
3b9a3dfa RS |
5083 | } |
5084 | ||
d0d6b7c5 JB |
5085 | /* Read pending output from the process channel, |
5086 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5087 | Yield number of decoded characters read. |
d0d6b7c5 | 5088 | |
116c423c | 5089 | This function reads at most 4096 characters. |
d0d6b7c5 | 5090 | If you want to read all available subprocess output, |
0fa1789e KH |
5091 | you must call it repeatedly until it returns zero. |
5092 | ||
5093 | The characters read are decoded according to PROC's coding-system | |
5094 | for decoding. */ | |
d0d6b7c5 | 5095 | |
ff6daed3 | 5096 | static int |
d3da34e0 | 5097 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5098 | { |
368f4090 | 5099 | register ssize_t nbytes; |
d0d6b7c5 | 5100 | char *chars; |
d0d6b7c5 | 5101 | register Lisp_Object outstream; |
d0d6b7c5 | 5102 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 5103 | register ptrdiff_t opoint; |
c7580538 | 5104 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5105 | int carryover = p->decoding_carryover; |
116c423c | 5106 | int readmax = 4096; |
d311d28c | 5107 | ptrdiff_t count = SPECPDL_INDEX (); |
3a4fa2f2 | 5108 | Lisp_Object odeactivate; |
d0d6b7c5 | 5109 | |
38182d90 | 5110 | chars = alloca (carryover + readmax); |
e7fbaa65 KH |
5111 | if (carryover) |
5112 | /* See the comment above. */ | |
4d2b044c | 5113 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5114 | |
e690ca94 KS |
5115 | #ifdef DATAGRAM_SOCKETS |
5116 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5117 | if (DATAGRAM_CHAN_P (channel)) | |
5118 | { | |
401bf9b4 | 5119 | socklen_t len = datagram_address[channel].len; |
39b1da20 | 5120 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5121 | 0, datagram_address[channel].sa, &len); |
5122 | } | |
5123 | else | |
5124 | #endif | |
6b61353c | 5125 | { |
82eaa333 PE |
5126 | int buffered = 0 <= proc_buffered_char[channel]; |
5127 | if (buffered) | |
5128 | { | |
5129 | chars[carryover] = proc_buffered_char[channel]; | |
5130 | proc_buffered_char[channel] = -1; | |
5131 | } | |
8af55556 | 5132 | #ifdef HAVE_GNUTLS |
959ad23f AS |
5133 | if (p->gnutls_p) |
5134 | nbytes = emacs_gnutls_read (p, chars + carryover + buffered, | |
82eaa333 | 5135 | readmax - buffered); |
8af55556 TZ |
5136 | else |
5137 | #endif | |
82eaa333 PE |
5138 | nbytes = emacs_read (channel, chars + carryover + buffered, |
5139 | readmax - buffered); | |
6b61353c | 5140 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5141 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5142 | { |
60f0fb11 | 5143 | int delay = p->read_output_delay; |
6b61353c KH |
5144 | if (nbytes < 256) |
5145 | { | |
5146 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5147 | { | |
5148 | if (delay == 0) | |
5149 | process_output_delay_count++; | |
5150 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5151 | } | |
5152 | } | |
82eaa333 | 5153 | else if (delay > 0 && nbytes == readmax - buffered) |
6b61353c KH |
5154 | { |
5155 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5156 | if (delay == 0) | |
5157 | process_output_delay_count--; | |
5158 | } | |
60f0fb11 | 5159 | p->read_output_delay = delay; |
6b61353c KH |
5160 | if (delay) |
5161 | { | |
60f0fb11 | 5162 | p->read_output_skip = 1; |
6b61353c KH |
5163 | process_output_skip = 1; |
5164 | } | |
5165 | } | |
5166 | #endif | |
fe07cdfa PE |
5167 | nbytes += buffered; |
5168 | nbytes += buffered && nbytes <= 0; | |
d0d6b7c5 | 5169 | } |
d0d6b7c5 | 5170 | |
60f0fb11 | 5171 | p->decoding_carryover = 0; |
ca65341e | 5172 | |
ed7a4b2d | 5173 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5174 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5175 | if (nbytes <= 0) |
5176 | { | |
5177 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5178 | return nbytes; | |
5179 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5180 | } | |
d0d6b7c5 | 5181 | |
1d2fc612 | 5182 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5183 | nbytes += carryover; |
0fa1789e | 5184 | |
3a4fa2f2 SM |
5185 | odeactivate = Vdeactivate_mark; |
5186 | /* There's no good reason to let process filters change the current | |
5187 | buffer, and many callers of accept-process-output, sit-for, and | |
5188 | friends don't expect current-buffer to be changed from under them. */ | |
66322887 | 5189 | record_unwind_current_buffer (); |
3a4fa2f2 | 5190 | |
1d2fc612 | 5191 | /* Read and dispose of the process output. */ |
4d2b044c | 5192 | outstream = p->filter; |
d0d6b7c5 JB |
5193 | if (!NILP (outstream)) |
5194 | { | |
1d2fc612 | 5195 | Lisp_Object text; |
1882aa38 | 5196 | bool outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5197 | int waiting = waiting_for_user_input_p; |
30c78175 | 5198 | |
dfc21838 RS |
5199 | /* No need to gcpro these, because all we do with them later |
5200 | is test them for EQness, and none of them should be a string. */ | |
aba7731a PE |
5201 | #if 0 |
5202 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 5203 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 5204 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 5205 | #endif |
30c78175 | 5206 | |
3a4fa2f2 SM |
5207 | /* We inhibit quit here instead of just catching it so that |
5208 | hitting ^G when a filter happens to be running won't screw | |
5209 | it up. */ | |
d0d6b7c5 | 5210 | specbind (Qinhibit_quit, Qt); |
6545aada | 5211 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5212 | |
4da2f5be RS |
5213 | /* In case we get recursively called, |
5214 | and we already saved the match data nonrecursively, | |
5215 | save the same match data in safely recursive fashion. */ | |
5216 | if (outer_running_asynch_code) | |
5217 | { | |
5218 | Lisp_Object tem; | |
5219 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5220 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5221 | restore_search_regs (); | |
5222 | record_unwind_save_match_data (); | |
5223 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5224 | } |
5225 | ||
5226 | /* For speed, if a search happens within this code, | |
5227 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5228 | running_asynch_code = 1; |
4da2f5be | 5229 | |
400a67ff | 5230 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 | 5231 | text = coding->dst_object; |
5bbf78c1 | 5232 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5233 | /* A new coding system might be found. */ |
4d2b044c | 5234 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5235 | { |
6a09a33b | 5236 | pset_decode_coding_system (p, Vlast_coding_system_used); |
ed7a4b2d KH |
5237 | |
5238 | /* Don't call setup_coding_system for | |
5239 | proc_decode_coding_system[channel] here. It is done in | |
5240 | detect_coding called via decode_coding above. */ | |
5241 | ||
5242 | /* If a coding system for encoding is not yet decided, we set | |
5243 | it as the same as coding-system for decoding. | |
5244 | ||
5245 | But, before doing that we must check if | |
5246 | proc_encode_coding_system[p->outfd] surely points to a | |
5247 | valid memory because p->outfd will be changed once EOF is | |
5248 | sent to the process. */ | |
4d2b044c | 5249 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5250 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5251 | { |
6a09a33b PE |
5252 | pset_encode_coding_system |
5253 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
4d2b044c | 5254 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5255 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5256 | } |
5257 | } | |
51c6067d | 5258 | |
dd8c7a53 KH |
5259 | if (coding->carryover_bytes > 0) |
5260 | { | |
4d2b044c | 5261 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
6a09a33b | 5262 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5263 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5264 | coding->carryover_bytes); |
8c406a9b | 5265 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5266 | } |
e430e5ba | 5267 | if (SBYTES (text) > 0) |
963b492b SM |
5268 | /* FIXME: It's wrong to wrap or not based on debug-on-error, and |
5269 | sometimes it's simply wrong to wrap (e.g. when called from | |
5270 | accept-process-output). */ | |
dd97db06 KH |
5271 | internal_condition_case_1 (read_process_output_call, |
5272 | Fcons (outstream, | |
5273 | Fcons (proc, Fcons (text, Qnil))), | |
5274 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5275 | read_process_output_error_handler); | |
4da2f5be RS |
5276 | |
5277 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5278 | restore_search_regs (); |
4da2f5be | 5279 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5280 | |
bbce7d72 RS |
5281 | /* Restore waiting_for_user_input_p as it was |
5282 | when we were called, in case the filter clobbered it. */ | |
5283 | waiting_for_user_input_p = waiting; | |
5284 | ||
7973cfa8 RS |
5285 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5286 | because we might have changed minor modes or other things | |
5287 | that affect key bindings. */ | |
dfc21838 RS |
5288 | if (! EQ (Fcurrent_buffer (), obuffer) |
5289 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5290 | #endif |
927e08be RS |
5291 | /* But do it only if the caller is actually going to read events. |
5292 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5293 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5294 | if (waiting_for_user_input_p == -1) |
5295 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5296 | } |
5297 | ||
5298 | /* If no filter, write into buffer if it isn't dead. */ | |
e578f381 | 5299 | else if (!NILP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
d0d6b7c5 | 5300 | { |
b0310da4 | 5301 | Lisp_Object old_read_only; |
d311d28c PE |
5302 | ptrdiff_t old_begv, old_zv; |
5303 | ptrdiff_t old_begv_byte, old_zv_byte; | |
5304 | ptrdiff_t before, before_byte; | |
5305 | ptrdiff_t opoint_byte; | |
ed7a4b2d | 5306 | Lisp_Object text; |
926b7e5e | 5307 | struct buffer *b; |
30c78175 | 5308 | |
4d2b044c | 5309 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5310 | opoint = PT; |
d8a2934e | 5311 | opoint_byte = PT_BYTE; |
4b4deea2 | 5312 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5313 | old_begv = BEGV; |
5314 | old_zv = ZV; | |
d8a2934e RS |
5315 | old_begv_byte = BEGV_BYTE; |
5316 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5317 | |
39eb03f1 | 5318 | bset_read_only (current_buffer, Qnil); |
d0d6b7c5 JB |
5319 | |
5320 | /* Insert new output into buffer | |
5321 | at the current end-of-output marker, | |
5322 | thus preserving logical ordering of input and output. */ | |
4d2b044c | 5323 | if (XMARKER (p->mark)->buffer) |
3193acd2 | 5324 | SET_PT_BOTH (clip_to_bounds (BEGV, |
4d2b044c | 5325 | marker_position (p->mark), ZV), |
3193acd2 | 5326 | clip_to_bounds (BEGV_BYTE, |
4d2b044c | 5327 | marker_byte_position (p->mark), |
d8a2934e | 5328 | ZV_BYTE)); |
d0d6b7c5 | 5329 | else |
d8a2934e | 5330 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5331 | before = PT; |
d8a2934e | 5332 | before_byte = PT_BYTE; |
b0310da4 JB |
5333 | |
5334 | /* If the output marker is outside of the visible region, save | |
5335 | the restriction and widen. */ | |
6ec8bbd2 | 5336 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5337 | Fwiden (); |
5338 | ||
400a67ff | 5339 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 KH |
5340 | text = coding->dst_object; |
5341 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5342 | /* A new coding system might be found. See the comment in the |
5343 | similar code in the previous `if' block. */ | |
4d2b044c | 5344 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5345 | { |
6a09a33b | 5346 | pset_decode_coding_system (p, Vlast_coding_system_used); |
4d2b044c | 5347 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5348 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5349 | { |
6a09a33b PE |
5350 | pset_encode_coding_system |
5351 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
4d2b044c | 5352 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5353 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5354 | } |
5355 | } | |
dd8c7a53 KH |
5356 | if (coding->carryover_bytes > 0) |
5357 | { | |
4d2b044c | 5358 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
6a09a33b | 5359 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5360 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5361 | coding->carryover_bytes); |
8c406a9b | 5362 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5363 | } |
d69864bf | 5364 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5365 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5366 | != ! STRING_MULTIBYTE (text)) |
5367 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5368 | ? Fstring_as_unibyte (text) |
03f04413 | 5369 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5370 | /* Insert before markers in case we are inserting where |
5371 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5372 | insert_from_string_before_markers (text, 0, 0, |
5373 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5374 | |
926b7e5e GM |
5375 | /* Make sure the process marker's position is valid when the |
5376 | process buffer is changed in the signal_after_change above. | |
5377 | W3 is known to do that. */ | |
4d2b044c DA |
5378 | if (BUFFERP (p->buffer) |
5379 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5380 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
926b7e5e | 5381 | else |
4d2b044c | 5382 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
b0310da4 | 5383 | |
d0d6b7c5 JB |
5384 | update_mode_lines++; |
5385 | ||
12ca5cdf RS |
5386 | /* Make sure opoint and the old restrictions |
5387 | float ahead of any new text just as point would. */ | |
5388 | if (opoint >= before) | |
d8a2934e RS |
5389 | { |
5390 | opoint += PT - before; | |
5391 | opoint_byte += PT_BYTE - before_byte; | |
5392 | } | |
12ca5cdf | 5393 | if (old_begv > before) |
d8a2934e RS |
5394 | { |
5395 | old_begv += PT - before; | |
5396 | old_begv_byte += PT_BYTE - before_byte; | |
5397 | } | |
12ca5cdf | 5398 | if (old_zv >= before) |
d8a2934e RS |
5399 | { |
5400 | old_zv += PT - before; | |
5401 | old_zv_byte += PT_BYTE - before_byte; | |
5402 | } | |
12ca5cdf | 5403 | |
b0310da4 | 5404 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5405 | if (old_begv != BEGV || old_zv != ZV) |
5406 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5407 | |
30c78175 | 5408 | |
39eb03f1 | 5409 | bset_read_only (current_buffer, old_read_only); |
d8a2934e | 5410 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5411 | } |
3a4fa2f2 SM |
5412 | /* Handling the process output should not deactivate the mark. */ |
5413 | Vdeactivate_mark = odeactivate; | |
5414 | ||
5415 | unbind_to (count, Qnil); | |
1d2fc612 | 5416 | return nbytes; |
d0d6b7c5 | 5417 | } |
d0d6b7c5 JB |
5418 | \f |
5419 | /* Sending data to subprocess */ | |
5420 | ||
0328b6de | 5421 | static sys_jmp_buf send_process_frame; |
40ccffa6 | 5422 | static Lisp_Object process_sent_to; |
d0d6b7c5 | 5423 | |
20ef56db PE |
5424 | static _Noreturn void |
5425 | handle_pipe_signal (int sig) | |
d0d6b7c5 | 5426 | { |
2fe28299 PE |
5427 | sigset_t unblocked; |
5428 | sigemptyset (&unblocked); | |
5429 | sigaddset (&unblocked, SIGPIPE); | |
5430 | pthread_sigmask (SIG_UNBLOCK, &unblocked, 0); | |
0328b6de | 5431 | sys_longjmp (send_process_frame, 1); |
d0d6b7c5 JB |
5432 | } |
5433 | ||
20ef56db PE |
5434 | static void |
5435 | deliver_pipe_signal (int sig) | |
5436 | { | |
5437 | handle_on_main_thread (sig, handle_pipe_signal); | |
5438 | } | |
5439 | ||
20ca2e94 TN |
5440 | /* In send_process, when a write fails temporarily, |
5441 | wait_reading_process_output is called. It may execute user code, | |
5442 | e.g. timers, that attempts to write new data to the same process. | |
5443 | We must ensure that data is sent in the right order, and not | |
5444 | interspersed half-completed with other writes (Bug#10815). This is | |
5445 | handled by the write_queue element of struct process. It is a list | |
5446 | with each entry having the form | |
5447 | ||
5448 | (string . (offset . length)) | |
5449 | ||
5450 | where STRING is a lisp string, OFFSET is the offset into the | |
5451 | string's byte sequence from which we should begin to send, and | |
5452 | LENGTH is the number of bytes left to send. */ | |
5453 | ||
5454 | /* Create a new entry in write_queue. | |
5455 | INPUT_OBJ should be a buffer, string Qt, or Qnil. | |
5456 | BUF is a pointer to the string sequence of the input_obj or a C | |
5457 | string in case of Qt or Qnil. */ | |
5458 | ||
5459 | static void | |
5460 | write_queue_push (struct Lisp_Process *p, Lisp_Object input_obj, | |
7ea2b339 | 5461 | const char *buf, ptrdiff_t len, int front) |
20ca2e94 | 5462 | { |
7ea2b339 | 5463 | ptrdiff_t offset; |
20ca2e94 TN |
5464 | Lisp_Object entry, obj; |
5465 | ||
5466 | if (STRINGP (input_obj)) | |
5467 | { | |
5468 | offset = buf - SSDATA (input_obj); | |
5469 | obj = input_obj; | |
5470 | } | |
5471 | else | |
5472 | { | |
5473 | offset = 0; | |
5474 | obj = make_unibyte_string (buf, len); | |
5475 | } | |
5476 | ||
5477 | entry = Fcons (obj, Fcons (make_number (offset), make_number (len))); | |
5478 | ||
5479 | if (front) | |
6a09a33b | 5480 | pset_write_queue (p, Fcons (entry, p->write_queue)); |
20ca2e94 | 5481 | else |
6a09a33b | 5482 | pset_write_queue (p, nconc2 (p->write_queue, Fcons (entry, Qnil))); |
20ca2e94 TN |
5483 | } |
5484 | ||
5485 | /* Remove the first element in the write_queue of process P, put its | |
5486 | contents in OBJ, BUF and LEN, and return non-zero. If the | |
5487 | write_queue is empty, return zero. */ | |
5488 | ||
5489 | static int | |
5490 | write_queue_pop (struct Lisp_Process *p, Lisp_Object *obj, | |
7ea2b339 | 5491 | const char **buf, ptrdiff_t *len) |
20ca2e94 TN |
5492 | { |
5493 | Lisp_Object entry, offset_length; | |
7ea2b339 | 5494 | ptrdiff_t offset; |
20ca2e94 | 5495 | |
4d2b044c | 5496 | if (NILP (p->write_queue)) |
20ca2e94 TN |
5497 | return 0; |
5498 | ||
4d2b044c | 5499 | entry = XCAR (p->write_queue); |
6a09a33b | 5500 | pset_write_queue (p, XCDR (p->write_queue)); |
20ca2e94 TN |
5501 | |
5502 | *obj = XCAR (entry); | |
5503 | offset_length = XCDR (entry); | |
5504 | ||
5505 | *len = XINT (XCDR (offset_length)); | |
5506 | offset = XINT (XCAR (offset_length)); | |
7ea2b339 | 5507 | *buf = SSDATA (*obj) + offset; |
20ca2e94 TN |
5508 | |
5509 | return 1; | |
5510 | } | |
5511 | ||
4556b700 RS |
5512 | /* Send some data to process PROC. |
5513 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5514 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5515 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5516 | |
a92e4183 KH |
5517 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5518 | for encoding before it is sent. | |
1fb0098c GM |
5519 | |
5520 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5521 | |
ff6daed3 | 5522 | static void |
400a67ff | 5523 | send_process (volatile Lisp_Object proc, const char *volatile buf, |
d311d28c | 5524 | volatile ptrdiff_t len, volatile Lisp_Object object) |
d0d6b7c5 | 5525 | { |
ecd1f654 | 5526 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5527 | struct Lisp_Process *p = XPROCESS (proc); |
368f4090 | 5528 | ssize_t rv; |
0fa1789e | 5529 | struct coding_system *coding; |
2fe28299 | 5530 | struct sigaction old_sigpipe_action; |
6044e593 | 5531 | |
6bfd98e7 | 5532 | if (p->raw_status_new) |
6b61353c | 5533 | update_status (p); |
4d2b044c DA |
5534 | if (! EQ (p->status, Qrun)) |
5535 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5536 | if (p->outfd < 0) |
4d2b044c | 5537 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5538 | |
60f0fb11 | 5539 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5540 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5541 | |
ed7a4b2d KH |
5542 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5543 | || (BUFFERP (object) | |
4b4deea2 | 5544 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5545 | || EQ (object, Qt)) |
278bfdd6 | 5546 | { |
6a09a33b PE |
5547 | pset_encode_coding_system |
5548 | (p, complement_process_encoding_system (p->encode_coding_system)); | |
4d2b044c | 5549 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
fcaf8878 KH |
5550 | { |
5551 | /* The coding system for encoding was changed to raw-text | |
5552 | because we sent a unibyte text previously. Now we are | |
5553 | sending a multibyte text, thus we must encode it by the | |
5554 | original coding system specified for the current process. | |
5555 | ||
da6062e6 PE |
5556 | Another reason we come here is that the coding system |
5557 | was just complemented and a new one was returned by | |
fcaf8878 | 5558 | complement_process_encoding_system. */ |
4d2b044c DA |
5559 | setup_coding_system (p->encode_coding_system, coding); |
5560 | Vlast_coding_system_used = p->encode_coding_system; | |
fcaf8878 | 5561 | } |
e08bbb84 | 5562 | coding->src_multibyte = 1; |
278bfdd6 KH |
5563 | } |
5564 | else | |
5565 | { | |
a0241d01 | 5566 | coding->src_multibyte = 0; |
a92e4183 KH |
5567 | /* For sending a unibyte text, character code conversion should |
5568 | not take place but EOL conversion should. So, setup raw-text | |
5569 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5570 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5571 | { |
5572 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5573 | { | |
5574 | /* But, before changing the coding, we must flush out data. */ | |
5575 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5576 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5577 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5578 | } |
5bbf78c1 KH |
5579 | setup_coding_system (raw_text_coding_system |
5580 | (Vlast_coding_system_used), | |
5581 | coding); | |
e08bbb84 | 5582 | coding->src_multibyte = 0; |
a92e4183 | 5583 | } |
278bfdd6 | 5584 | } |
a4a37e65 KH |
5585 | coding->dst_multibyte = 0; |
5586 | ||
ed7a4b2d | 5587 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5588 | { |
5bbf78c1 | 5589 | coding->dst_object = Qt; |
ed7a4b2d | 5590 | if (BUFFERP (object)) |
0fa1789e | 5591 | { |
d311d28c PE |
5592 | ptrdiff_t from_byte, from, to; |
5593 | ptrdiff_t save_pt, save_pt_byte; | |
5bbf78c1 KH |
5594 | struct buffer *cur = current_buffer; |
5595 | ||
5596 | set_buffer_internal (XBUFFER (object)); | |
5597 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5598 | ||
400a67ff | 5599 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5600 | from = BYTE_TO_CHAR (from_byte); |
5601 | to = BYTE_TO_CHAR (from_byte + len); | |
5602 | TEMP_SET_PT_BOTH (from, from_byte); | |
5603 | encode_coding_object (coding, object, from, from_byte, | |
5604 | to, from_byte + len, Qt); | |
5605 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5606 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5607 | } |
5608 | else if (STRINGP (object)) | |
5609 | { | |
550c8289 KH |
5610 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5611 | SBYTES (object), Qt); | |
0fa1789e | 5612 | } |
5bbf78c1 | 5613 | else |
452294c2 | 5614 | { |
5bbf78c1 KH |
5615 | coding->dst_object = make_unibyte_string (buf, len); |
5616 | coding->produced = len; | |
452294c2 | 5617 | } |
ed7a4b2d | 5618 | |
e7fbaa65 | 5619 | len = coding->produced; |
347f3cd3 | 5620 | object = coding->dst_object; |
400a67ff | 5621 | buf = SSDATA (object); |
0fa1789e | 5622 | } |
d0d6b7c5 | 5623 | |
4556b700 RS |
5624 | if (pty_max_bytes == 0) |
5625 | { | |
5626 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5627 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5628 | if (pty_max_bytes < 0) |
5629 | pty_max_bytes = 250; | |
5630 | #else | |
5631 | pty_max_bytes = 250; | |
5632 | #endif | |
5633 | /* Deduct one, to leave space for the eof. */ | |
5634 | pty_max_bytes--; | |
5635 | } | |
5636 | ||
0daad115 GM |
5637 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5638 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5639 | when returning with longjmp despite being declared volatile. */ | |
0328b6de | 5640 | if (!sys_setjmp (send_process_frame)) |
0daad115 | 5641 | { |
006c5daa | 5642 | p = XPROCESS (proc); /* Repair any setjmp clobbering. */ |
0daad115 | 5643 | process_sent_to = proc; |
20ca2e94 TN |
5644 | |
5645 | /* If there is already data in the write_queue, put the new data | |
5646 | in the back of queue. Otherwise, ignore it. */ | |
4d2b044c | 5647 | if (!NILP (p->write_queue)) |
20ca2e94 TN |
5648 | write_queue_push (p, object, buf, len, 0); |
5649 | ||
5650 | do /* while !NILP (p->write_queue) */ | |
0daad115 | 5651 | { |
7ea2b339 | 5652 | ptrdiff_t cur_len = -1; |
20ca2e94 TN |
5653 | const char *cur_buf; |
5654 | Lisp_Object cur_object; | |
5655 | ||
5656 | /* If write_queue is empty, ignore it. */ | |
5657 | if (!write_queue_pop (p, &cur_object, &cur_buf, &cur_len)) | |
5658 | { | |
5659 | cur_len = len; | |
5660 | cur_buf = buf; | |
5661 | cur_object = object; | |
5662 | } | |
93b4f699 | 5663 | |
20ca2e94 | 5664 | while (cur_len > 0) |
0daad115 | 5665 | { |
20ca2e94 | 5666 | /* Send this batch, using one or more write calls. */ |
d311d28c | 5667 | ptrdiff_t written = 0; |
60f0fb11 | 5668 | int outfd = p->outfd; |
2fe28299 PE |
5669 | struct sigaction action; |
5670 | emacs_sigaction_init (&action, deliver_pipe_signal); | |
5671 | sigaction (SIGPIPE, &action, &old_sigpipe_action); | |
e690ca94 KS |
5672 | #ifdef DATAGRAM_SOCKETS |
5673 | if (DATAGRAM_CHAN_P (outfd)) | |
5674 | { | |
20ca2e94 | 5675 | rv = sendto (outfd, cur_buf, cur_len, |
e690ca94 KS |
5676 | 0, datagram_address[outfd].sa, |
5677 | datagram_address[outfd].len); | |
273a5f82 PE |
5678 | if (0 <= rv) |
5679 | written = rv; | |
5680 | else if (errno == EMSGSIZE) | |
c8f44005 | 5681 | { |
2fe28299 | 5682 | sigaction (SIGPIPE, &old_sigpipe_action, 0); |
c8f44005 RS |
5683 | report_file_error ("sending datagram", |
5684 | Fcons (proc, Qnil)); | |
5685 | } | |
e690ca94 KS |
5686 | } |
5687 | else | |
5688 | #endif | |
6b61353c | 5689 | { |
8af55556 | 5690 | #ifdef HAVE_GNUTLS |
959ad23f | 5691 | if (p->gnutls_p) |
20ca2e94 | 5692 | written = emacs_gnutls_write (p, cur_buf, cur_len); |
8af55556 TZ |
5693 | else |
5694 | #endif | |
20ca2e94 | 5695 | written = emacs_write (outfd, cur_buf, cur_len); |
086e8c47 | 5696 | rv = (written ? 0 : -1); |
6b61353c | 5697 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
5698 | if (p->read_output_delay > 0 |
5699 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5700 | { |
60f0fb11 | 5701 | p->read_output_delay = 0; |
6b61353c | 5702 | process_output_delay_count--; |
60f0fb11 | 5703 | p->read_output_skip = 0; |
6b61353c KH |
5704 | } |
5705 | #endif | |
5706 | } | |
2fe28299 | 5707 | sigaction (SIGPIPE, &old_sigpipe_action, 0); |
4556b700 | 5708 | |
0daad115 GM |
5709 | if (rv < 0) |
5710 | { | |
5711 | if (0 | |
d0d6b7c5 | 5712 | #ifdef EWOULDBLOCK |
0daad115 | 5713 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5714 | #endif |
5715 | #ifdef EAGAIN | |
0daad115 | 5716 | || errno == EAGAIN |
d0d6b7c5 | 5717 | #endif |
0daad115 | 5718 | ) |
177c0ea7 | 5719 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5720 | that may allow the program |
5721 | to finish doing output and read more. */ | |
5722 | { | |
3433b6bd | 5723 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5724 | /* A gross hack to work around a bug in FreeBSD. |
5725 | In the following sequence, read(2) returns | |
5726 | bogus data: | |
5727 | ||
5728 | write(2) 1022 bytes | |
5729 | write(2) 954 bytes, get EAGAIN | |
5730 | read(2) 1024 bytes in process_read_output | |
5731 | read(2) 11 bytes in process_read_output | |
5732 | ||
5733 | That is, read(2) returns more bytes than have | |
5734 | ever been written successfully. The 1033 bytes | |
5735 | read are the 1022 bytes written successfully | |
5736 | after processing (for example with CRs added if | |
5737 | the terminal is set up that way which it is | |
5738 | here). The same bytes will be seen again in a | |
5739 | later read(2), without the CRs. */ | |
177c0ea7 | 5740 | |
0daad115 GM |
5741 | if (errno == EAGAIN) |
5742 | { | |
5743 | int flags = FWRITE; | |
60f0fb11 | 5744 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5745 | } |
3433b6bd | 5746 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5747 | |
7ea2b339 | 5748 | /* Put what we should have written in wait_queue. */ |
20ca2e94 | 5749 | write_queue_push (p, cur_object, cur_buf, cur_len, 1); |
d35af63c PE |
5750 | wait_reading_process_output (0, 20 * 1000 * 1000, |
5751 | 0, 0, Qnil, NULL, 0); | |
7ea2b339 | 5752 | /* Reread queue, to see what is left. */ |
20ca2e94 | 5753 | break; |
0daad115 GM |
5754 | } |
5755 | else | |
5756 | /* This is a real error. */ | |
5757 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5758 | } | |
20ca2e94 TN |
5759 | cur_buf += written; |
5760 | cur_len -= written; | |
0daad115 | 5761 | } |
0daad115 | 5762 | } |
4d2b044c | 5763 | while (!NILP (p->write_queue)); |
0daad115 | 5764 | } |
d0d6b7c5 JB |
5765 | else |
5766 | { | |
2fe28299 | 5767 | sigaction (SIGPIPE, &old_sigpipe_action, 0); |
0daad115 | 5768 | proc = process_sent_to; |
6b61353c | 5769 | p = XPROCESS (proc); |
6bfd98e7 | 5770 | p->raw_status_new = 0; |
6a09a33b | 5771 | pset_status (p, Fcons (Qexit, Fcons (make_number (256), Qnil))); |
60f0fb11 | 5772 | p->tick = ++process_tick; |
d0d6b7c5 | 5773 | deactivate_process (proc); |
4d2b044c | 5774 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5775 | } |
5776 | } | |
5777 | ||
5778 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5779 | 3, 3, 0, |
5780 | doc: /* Send current contents of region as input to PROCESS. | |
5781 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5782 | nil, indicating the current buffer's process. | |
5783 | Called from program, takes three arguments, PROCESS, START and END. | |
5784 | If the region is more than 500 characters long, | |
5785 | it is sent in several bunches. This may happen even for shorter regions. | |
5786 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5787 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5788 | { |
5789 | Lisp_Object proc; | |
d311d28c | 5790 | ptrdiff_t start1, end1; |
d0d6b7c5 JB |
5791 | |
5792 | proc = get_process (process); | |
5793 | validate_region (&start, &end); | |
1b234f64 KH |
5794 | |
5795 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5796 | move_gap (XINT (start)); | |
5797 | ||
5798 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5799 | end1 = CHAR_TO_BYTE (XINT (end)); | |
400a67ff | 5800 | send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1, |
1b234f64 KH |
5801 | Fcurrent_buffer ()); |
5802 | ||
d0d6b7c5 JB |
5803 | return Qnil; |
5804 | } | |
5805 | ||
5806 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5807 | 2, 2, 0, |
5808 | doc: /* Send PROCESS the contents of STRING as input. | |
5809 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5810 | nil, indicating the current buffer's process. | |
5811 | If STRING is more than 500 characters long, | |
5812 | it is sent in several bunches. This may happen even for shorter strings. | |
5813 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5814 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5815 | { |
5816 | Lisp_Object proc; | |
b7826503 | 5817 | CHECK_STRING (string); |
d0d6b7c5 | 5818 | proc = get_process (process); |
400a67ff | 5819 | send_process (proc, SSDATA (string), |
1b234f64 | 5820 | SBYTES (string), string); |
d0d6b7c5 JB |
5821 | return Qnil; |
5822 | } | |
5823 | \f | |
16782258 JD |
5824 | /* Return the foreground process group for the tty/pty that |
5825 | the process P uses. */ | |
dde14581 | 5826 | static pid_t |
d3da34e0 | 5827 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 | 5828 | { |
dde14581 | 5829 | pid_t gid = -1; |
16782258 | 5830 | |
f3d9532b | 5831 | #ifdef TIOCGPGRP |
4d2b044c | 5832 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5833 | { |
5834 | int fd; | |
5835 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5836 | master side. Try the slave side. */ | |
4d2b044c | 5837 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5838 | |
5839 | if (fd != -1) | |
5840 | { | |
5841 | ioctl (fd, TIOCGPGRP, &gid); | |
5842 | emacs_close (fd); | |
5843 | } | |
5844 | } | |
5845 | #endif /* defined (TIOCGPGRP ) */ | |
5846 | ||
5847 | return gid; | |
5848 | } | |
5849 | ||
b81ea5ef RS |
5850 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5851 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5852 | doc: /* Return t if PROCESS has given the terminal to a child. |
5853 | If the operating system does not make it possible to find out, | |
5854 | return t unconditionally. */) | |
5842a27b | 5855 | (Lisp_Object process) |
b81ea5ef RS |
5856 | { |
5857 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5858 | in a way that will cause returning t. */ | |
dde14581 | 5859 | pid_t gid; |
b81ea5ef RS |
5860 | Lisp_Object proc; |
5861 | struct Lisp_Process *p; | |
5862 | ||
5863 | proc = get_process (process); | |
5864 | p = XPROCESS (proc); | |
5865 | ||
4d2b044c | 5866 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5867 | error ("Process %s is not a subprocess", |
4d2b044c | 5868 | SDATA (p->name)); |
60f0fb11 | 5869 | if (p->infd < 0) |
b81ea5ef | 5870 | error ("Process %s is not active", |
4d2b044c | 5871 | SDATA (p->name)); |
b81ea5ef | 5872 | |
16782258 | 5873 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5874 | |
6bfd98e7 | 5875 | if (gid == p->pid) |
b81ea5ef RS |
5876 | return Qnil; |
5877 | return Qt; | |
5878 | } | |
5879 | \f | |
d0d6b7c5 | 5880 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5881 | If CURRENT_GROUP is t, that means send to the process group |
5882 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5883 | This is used for various commands in shell mode. |
b81ea5ef RS |
5884 | If CURRENT_GROUP is lambda, that means send to the process group |
5885 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5886 | ||
d0d6b7c5 | 5887 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5888 | right away. |
5889 | ||
5890 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5891 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5892 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5893 | |
f9738840 | 5894 | static void |
d3da34e0 JB |
5895 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5896 | int nomsg) | |
d0d6b7c5 JB |
5897 | { |
5898 | Lisp_Object proc; | |
5899 | register struct Lisp_Process *p; | |
dde14581 | 5900 | pid_t gid; |
d0d6b7c5 JB |
5901 | int no_pgrp = 0; |
5902 | ||
5903 | proc = get_process (process); | |
5904 | p = XPROCESS (proc); | |
5905 | ||
4d2b044c | 5906 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5907 | error ("Process %s is not a subprocess", |
4d2b044c | 5908 | SDATA (p->name)); |
60f0fb11 | 5909 | if (p->infd < 0) |
d0d6b7c5 | 5910 | error ("Process %s is not active", |
4d2b044c | 5911 | SDATA (p->name)); |
d0d6b7c5 | 5912 | |
60f0fb11 | 5913 | if (!p->pty_flag) |
d0d6b7c5 JB |
5914 | current_group = Qnil; |
5915 | ||
d0d6b7c5 | 5916 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5917 | if (NILP (current_group)) |
5918 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5919 | gid = p->pid; |
2af70a0c | 5920 | else |
d0d6b7c5 | 5921 | { |
b0310da4 | 5922 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5923 | /* If possible, send signals to the entire pgrp |
5924 | by sending an input character to it. */ | |
b0310da4 | 5925 | |
6be429b1 | 5926 | struct termios t; |
7f916a36 RS |
5927 | cc_t *sig_char = NULL; |
5928 | ||
60f0fb11 | 5929 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5930 | |
5931 | switch (signo) | |
5932 | { | |
5933 | case SIGINT: | |
7f916a36 RS |
5934 | sig_char = &t.c_cc[VINTR]; |
5935 | break; | |
6be429b1 JB |
5936 | |
5937 | case SIGQUIT: | |
7f916a36 RS |
5938 | sig_char = &t.c_cc[VQUIT]; |
5939 | break; | |
6be429b1 JB |
5940 | |
5941 | case SIGTSTP: | |
d0adf46f | 5942 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5943 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5944 | #else |
7f916a36 | 5945 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5946 | #endif |
7f916a36 | 5947 | break; |
6be429b1 JB |
5948 | } |
5949 | ||
ca4313d5 | 5950 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc | 5951 | { |
f990b4e5 | 5952 | send_process (proc, (char *) sig_char, 1, Qnil); |
f1c206fc RS |
5953 | return; |
5954 | } | |
5955 | /* If we can't send the signal with a character, | |
5956 | fall through and send it another way. */ | |
f1c206fc RS |
5957 | |
5958 | /* The code above may fall through if it can't | |
5959 | handle the signal. */ | |
20505336 | 5960 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5961 | |
177c0ea7 | 5962 | #ifdef TIOCGPGRP |
2af70a0c | 5963 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5964 | Otherwise, use the pty to get the pgrp. |
5965 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5966 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5967 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5968 | His patch indicates that if TIOCGPGRP returns an error, then |
5969 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5970 | |
16782258 | 5971 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5972 | |
16782258 JD |
5973 | if (gid == -1) |
5974 | /* If we can't get the information, assume | |
5975 | the shell owns the tty. */ | |
6bfd98e7 | 5976 | gid = p->pid; |
2af70a0c RS |
5977 | |
5978 | /* It is not clear whether anything really can set GID to -1. | |
5979 | Perhaps on some system one of those ioctls can or could do so. | |
5980 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5981 | if (gid == -1) |
5982 | no_pgrp = 1; | |
b0310da4 | 5983 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5984 | /* Can't select pgrps on this system, so we know that |
5985 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5986 | gid = p->pid; |
301c3fe4 | 5987 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5988 | |
5989 | /* If current_group is lambda, and the shell owns the terminal, | |
5990 | don't send any signal. */ | |
6bfd98e7 | 5991 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5992 | return; |
d0d6b7c5 | 5993 | } |
d0d6b7c5 JB |
5994 | |
5995 | switch (signo) | |
5996 | { | |
5997 | #ifdef SIGCONT | |
5998 | case SIGCONT: | |
6bfd98e7 | 5999 | p->raw_status_new = 0; |
6a09a33b | 6000 | pset_status (p, Qrun); |
60f0fb11 | 6001 | p->tick = ++process_tick; |
d0d6b7c5 | 6002 | if (!nomsg) |
e42bdf01 CY |
6003 | { |
6004 | status_notify (NULL); | |
6005 | redisplay_preserve_echo_area (13); | |
6006 | } | |
d0d6b7c5 | 6007 | break; |
301c3fe4 | 6008 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 6009 | case SIGINT: |
d0d6b7c5 | 6010 | case SIGQUIT: |
d0d6b7c5 | 6011 | case SIGKILL: |
60f0fb11 | 6012 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
6013 | break; |
6014 | } | |
6015 | ||
6016 | /* If we don't have process groups, send the signal to the immediate | |
6017 | subprocess. That isn't really right, but it's better than any | |
6018 | obvious alternative. */ | |
6019 | if (no_pgrp) | |
6020 | { | |
6bfd98e7 | 6021 | kill (p->pid, signo); |
d0d6b7c5 JB |
6022 | return; |
6023 | } | |
6024 | ||
6025 | /* gid may be a pid, or minus a pgrp's number */ | |
6026 | #ifdef TIOCSIGSEND | |
6027 | if (!NILP (current_group)) | |
16782258 | 6028 | { |
60f0fb11 | 6029 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
6030 | EMACS_KILLPG (gid, signo); |
6031 | } | |
d0d6b7c5 JB |
6032 | else |
6033 | { | |
6bfd98e7 | 6034 | gid = - p->pid; |
d0d6b7c5 JB |
6035 | kill (gid, signo); |
6036 | } | |
301c3fe4 | 6037 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 6038 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 6039 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
6040 | } |
6041 | ||
6042 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
6043 | doc: /* Interrupt process PROCESS. |
6044 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 6045 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
6046 | Second arg CURRENT-GROUP non-nil means send signal to |
6047 | the current process-group of the process's controlling terminal | |
6048 | rather than to the process's own process group. | |
6049 | If the process is a shell, this means interrupt current subjob | |
6050 | rather than the shell. | |
6051 | ||
6052 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
6053 | don't send the signal. */) | |
5842a27b | 6054 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6055 | { |
6056 | process_send_signal (process, SIGINT, current_group, 0); | |
6057 | return process; | |
6058 | } | |
6059 | ||
6060 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
6061 | doc: /* Kill process PROCESS. May be process or name of one. |
6062 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 6063 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6064 | { |
6065 | process_send_signal (process, SIGKILL, current_group, 0); | |
6066 | return process; | |
6067 | } | |
6068 | ||
6069 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
6070 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
6071 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 6072 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6073 | { |
6074 | process_send_signal (process, SIGQUIT, current_group, 0); | |
6075 | return process; | |
6076 | } | |
6077 | ||
6078 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6079 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6080 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6081 | If PROCESS is a network or serial process, inhibit handling of incoming |
6082 | traffic. */) | |
5842a27b | 6083 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6084 | { |
d888760c | 6085 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6086 | { |
6087 | struct Lisp_Process *p; | |
177c0ea7 | 6088 | |
e690ca94 | 6089 | p = XPROCESS (process); |
4d2b044c | 6090 | if (NILP (p->command) |
60f0fb11 | 6091 | && p->infd >= 0) |
e690ca94 | 6092 | { |
60f0fb11 SM |
6093 | FD_CLR (p->infd, &input_wait_mask); |
6094 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 | 6095 | } |
6a09a33b | 6096 | pset_command (p, Qt); |
e690ca94 KS |
6097 | return process; |
6098 | } | |
d0d6b7c5 | 6099 | #ifndef SIGTSTP |
a9a73d6c | 6100 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6101 | #else |
6102 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6103 | #endif | |
6104 | return process; | |
6105 | } | |
6106 | ||
6107 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6108 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6109 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6110 | If PROCESS is a network or serial process, resume handling of incoming |
6111 | traffic. */) | |
5842a27b | 6112 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6113 | { |
d888760c | 6114 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6115 | { |
6116 | struct Lisp_Process *p; | |
6117 | ||
6118 | p = XPROCESS (process); | |
4d2b044c | 6119 | if (EQ (p->command, Qt) |
60f0fb11 | 6120 | && p->infd >= 0 |
4d2b044c | 6121 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
e690ca94 | 6122 | { |
60f0fb11 SM |
6123 | FD_SET (p->infd, &input_wait_mask); |
6124 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6125 | #ifdef WINDOWSNT |
6126 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6127 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 6128 | #else /* not WINDOWSNT */ |
d888760c | 6129 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 6130 | #endif /* not WINDOWSNT */ |
e690ca94 | 6131 | } |
6a09a33b | 6132 | pset_command (p, Qnil); |
e690ca94 KS |
6133 | return process; |
6134 | } | |
d0d6b7c5 JB |
6135 | #ifdef SIGCONT |
6136 | process_send_signal (process, SIGCONT, current_group, 0); | |
6137 | #else | |
a9a73d6c | 6138 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6139 | #endif |
6140 | return process; | |
6141 | } | |
6142 | ||
6143 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6144 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6145 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6146 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6147 | process to signal; in this case, the process need not be a child of |
6148 | this Emacs. | |
fdb82f93 | 6149 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6150 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6151 | { |
6bfd98e7 | 6152 | pid_t pid; |
cdd5ea86 | 6153 | |
cdd5ea86 KS |
6154 | if (STRINGP (process)) |
6155 | { | |
d311d28c PE |
6156 | Lisp_Object tem = Fget_process (process); |
6157 | if (NILP (tem)) | |
cdd5ea86 | 6158 | { |
d44287d4 PE |
6159 | Lisp_Object process_number = |
6160 | string_to_number (SSDATA (process), 10, 1); | |
6161 | if (INTEGERP (process_number) || FLOATP (process_number)) | |
6162 | tem = process_number; | |
cdd5ea86 KS |
6163 | } |
6164 | process = tem; | |
6165 | } | |
d44287d4 | 6166 | else if (!NUMBERP (process)) |
cdd5ea86 | 6167 | process = get_process (process); |
177c0ea7 | 6168 | |
cdd5ea86 KS |
6169 | if (NILP (process)) |
6170 | return process; | |
6171 | ||
d83cf4cc PE |
6172 | if (NUMBERP (process)) |
6173 | CONS_TO_INTEGER (process, pid_t, pid); | |
d44287d4 PE |
6174 | else |
6175 | { | |
6176 | CHECK_PROCESS (process); | |
6177 | pid = XPROCESS (process)->pid; | |
6178 | if (pid <= 0) | |
4d2b044c | 6179 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
d44287d4 | 6180 | } |
4766242d | 6181 | |
59324b1d | 6182 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6183 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6184 | XSETINT (sigcode, VALUE) |
6185 | ||
6186 | if (INTEGERP (sigcode)) | |
d311d28c | 6187 | CHECK_TYPE_RANGED_INTEGER (int, sigcode); |
4766242d RS |
6188 | else |
6189 | { | |
25a48bd0 | 6190 | char *name; |
4766242d | 6191 | |
b7826503 | 6192 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6193 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6194 | |
ed3751c8 | 6195 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6196 | name += 3; |
6197 | ||
4766242d RS |
6198 | if (0) |
6199 | ; | |
59324b1d KS |
6200 | #ifdef SIGUSR1 |
6201 | parse_signal ("usr1", SIGUSR1); | |
6202 | #endif | |
6203 | #ifdef SIGUSR2 | |
6204 | parse_signal ("usr2", SIGUSR2); | |
6205 | #endif | |
6206 | #ifdef SIGTERM | |
6207 | parse_signal ("term", SIGTERM); | |
6208 | #endif | |
4766242d | 6209 | #ifdef SIGHUP |
59324b1d | 6210 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6211 | #endif |
6212 | #ifdef SIGINT | |
59324b1d | 6213 | parse_signal ("int", SIGINT); |
4766242d RS |
6214 | #endif |
6215 | #ifdef SIGQUIT | |
59324b1d | 6216 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6217 | #endif |
6218 | #ifdef SIGILL | |
59324b1d | 6219 | parse_signal ("ill", SIGILL); |
4766242d RS |
6220 | #endif |
6221 | #ifdef SIGABRT | |
59324b1d | 6222 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6223 | #endif |
6224 | #ifdef SIGEMT | |
59324b1d | 6225 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6226 | #endif |
6227 | #ifdef SIGKILL | |
59324b1d | 6228 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6229 | #endif |
6230 | #ifdef SIGFPE | |
59324b1d | 6231 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6232 | #endif |
6233 | #ifdef SIGBUS | |
59324b1d | 6234 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6235 | #endif |
6236 | #ifdef SIGSEGV | |
59324b1d | 6237 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6238 | #endif |
6239 | #ifdef SIGSYS | |
59324b1d | 6240 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6241 | #endif |
6242 | #ifdef SIGPIPE | |
59324b1d | 6243 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6244 | #endif |
6245 | #ifdef SIGALRM | |
59324b1d | 6246 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6247 | #endif |
6248 | #ifdef SIGURG | |
59324b1d | 6249 | parse_signal ("urg", SIGURG); |
4766242d RS |
6250 | #endif |
6251 | #ifdef SIGSTOP | |
59324b1d | 6252 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6253 | #endif |
6254 | #ifdef SIGTSTP | |
59324b1d | 6255 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6256 | #endif |
6257 | #ifdef SIGCONT | |
59324b1d | 6258 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6259 | #endif |
6260 | #ifdef SIGCHLD | |
59324b1d | 6261 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6262 | #endif |
6263 | #ifdef SIGTTIN | |
59324b1d | 6264 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6265 | #endif |
6266 | #ifdef SIGTTOU | |
59324b1d | 6267 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6268 | #endif |
6269 | #ifdef SIGIO | |
59324b1d | 6270 | parse_signal ("io", SIGIO); |
4766242d RS |
6271 | #endif |
6272 | #ifdef SIGXCPU | |
59324b1d | 6273 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6274 | #endif |
6275 | #ifdef SIGXFSZ | |
59324b1d | 6276 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6277 | #endif |
6278 | #ifdef SIGVTALRM | |
59324b1d | 6279 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6280 | #endif |
6281 | #ifdef SIGPROF | |
59324b1d | 6282 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6283 | #endif |
6284 | #ifdef SIGWINCH | |
59324b1d | 6285 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6286 | #endif |
6287 | #ifdef SIGINFO | |
59324b1d | 6288 | parse_signal ("info", SIGINFO); |
4766242d RS |
6289 | #endif |
6290 | else | |
9fa195a2 | 6291 | error ("Undefined signal name %s", name); |
4766242d RS |
6292 | } |
6293 | ||
59324b1d | 6294 | #undef parse_signal |
4766242d | 6295 | |
6bfd98e7 | 6296 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6297 | } |
6298 | ||
6299 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6300 | doc: /* Make PROCESS see end-of-file in its input. |
6301 | EOF comes after any text already sent to it. | |
6302 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6303 | nil, indicating the current buffer's process. | |
6304 | If PROCESS is a network connection, or is a process communicating | |
6305 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6306 | text to PROCESS after you call this function. |
6307 | If PROCESS is a serial process, wait until all output written to the | |
6308 | process has been transmitted to the serial port. */) | |
5842a27b | 6309 | (Lisp_Object process) |
d0d6b7c5 JB |
6310 | { |
6311 | Lisp_Object proc; | |
de7fbd09 | 6312 | struct coding_system *coding; |
d0d6b7c5 | 6313 | |
e690ca94 KS |
6314 | if (DATAGRAM_CONN_P (process)) |
6315 | return process; | |
6316 | ||
d0d6b7c5 | 6317 | proc = get_process (process); |
60f0fb11 | 6318 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6319 | |
6320 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6321 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 | 6322 | update_status (XPROCESS (proc)); |
4d2b044c DA |
6323 | if (! EQ (XPROCESS (proc)->status, Qrun)) |
6324 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); | |
577d03d5 | 6325 | |
de7fbd09 KH |
6326 | if (CODING_REQUIRE_FLUSHING (coding)) |
6327 | { | |
6328 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6329 | send_process (proc, "", 0, Qnil); | |
6330 | } | |
6331 | ||
60f0fb11 | 6332 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6333 | send_process (proc, "\004", 1, Qnil); |
4d2b044c | 6334 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6335 | { |
a7ebc409 | 6336 | #ifndef WINDOWSNT |
d888760c GM |
6337 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6338 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6339 | #endif /* not WINDOWSNT */ |
d888760c GM |
6340 | /* Do nothing on Windows because writes are blocking. */ |
6341 | } | |
d0d6b7c5 JB |
6342 | else |
6343 | { | |
4525f571 RS |
6344 | int old_outfd, new_outfd; |
6345 | ||
93853f3d | 6346 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6347 | /* If this is a network connection, or socketpair is used |
6348 | for communication with the subprocess, call shutdown to cause EOF. | |
6349 | (In some old system, shutdown to socketpair doesn't work. | |
6350 | Then we just can't win.) */ | |
4d2b044c | 6351 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6352 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6353 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6354 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6355 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6356 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6357 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6358 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6359 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6360 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 | 6361 | if (new_outfd < 0) |
1088b922 | 6362 | emacs_abort (); |
60f0fb11 | 6363 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6364 | |
6365 | if (!proc_encode_coding_system[new_outfd]) | |
6366 | proc_encode_coding_system[new_outfd] | |
23f86fce | 6367 | = xmalloc (sizeof (struct coding_system)); |
ae1d87e2 PE |
6368 | *proc_encode_coding_system[new_outfd] |
6369 | = *proc_encode_coding_system[old_outfd]; | |
72af86bd AS |
6370 | memset (proc_encode_coding_system[old_outfd], 0, |
6371 | sizeof (struct coding_system)); | |
4525f571 | 6372 | |
60f0fb11 | 6373 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6374 | } |
d0d6b7c5 JB |
6375 | return process; |
6376 | } | |
d0d6b7c5 | 6377 | \f |
3fed8ad5 GM |
6378 | /* On receipt of a signal that a child status has changed, loop asking |
6379 | about children with changed statuses until the system says there | |
6380 | are no more. | |
177c0ea7 | 6381 | |
3fed8ad5 GM |
6382 | All we do is change the status; we do not run sentinels or print |
6383 | notifications. That is saved for the next time keyboard input is | |
6384 | done, in order to avoid timing errors. | |
6385 | ||
6386 | ** WARNING: this can be called during garbage collection. | |
6387 | Therefore, it must not be fooled by the presence of mark bits in | |
6388 | Lisp objects. | |
6389 | ||
6390 | ** USG WARNING: Although it is not obvious from the documentation | |
6391 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6392 | signal() before executing at least one wait(), otherwise the | |
6393 | handler will be called again, resulting in an infinite loop. The | |
6394 | relevant portion of the documentation reads "SIGCLD signals will be | |
6395 | queued and the signal-catching function will be continually | |
6396 | reentered until the queue is empty". Invoking signal() causes the | |
6397 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6398 | Inc. |
6399 | ||
6400 | ** Malloc WARNING: This should never call malloc either directly or | |
6401 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6402 | |
a5cfdda8 | 6403 | #ifdef SIGCHLD |
20ef56db PE |
6404 | |
6405 | /* Record one child's changed status. Return true if a child was found. */ | |
6406 | static bool | |
6407 | record_child_status_change (void) | |
d0d6b7c5 | 6408 | { |
d0d6b7c5 | 6409 | Lisp_Object proc; |
97ec208f | 6410 | struct Lisp_Process *p; |
20ef56db PE |
6411 | pid_t pid; |
6412 | int w; | |
6413 | Lisp_Object tail; | |
d0d6b7c5 | 6414 | |
20ef56db PE |
6415 | do |
6416 | pid = waitpid (-1, &w, WNOHANG | WUNTRACED); | |
6417 | while (pid < 0 && errno == EINTR); | |
d0d6b7c5 | 6418 | |
20ef56db PE |
6419 | /* PID == 0 means no processes found, PID == -1 means a real failure. |
6420 | Either way, we have done all our job. */ | |
6421 | if (pid <= 0) | |
6422 | return false; | |
d0d6b7c5 | 6423 | |
20ef56db | 6424 | /* Find the process that signaled us, and record its status. */ |
d0d6b7c5 | 6425 | |
20ef56db PE |
6426 | /* The process can have been deleted by Fdelete_process. */ |
6427 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) | |
6428 | { | |
6429 | Lisp_Object xpid = XCAR (tail); | |
6430 | if ((INTEGERP (xpid) && pid == XINT (xpid)) | |
6431 | || (FLOATP (xpid) && pid == XFLOAT_DATA (xpid))) | |
a5cfdda8 | 6432 | { |
20ef56db PE |
6433 | XSETCAR (tail, Qnil); |
6434 | return true; | |
a5cfdda8 | 6435 | } |
20ef56db | 6436 | } |
a5cfdda8 | 6437 | |
20ef56db PE |
6438 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ |
6439 | p = 0; | |
6440 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
6441 | { | |
6442 | proc = XCDR (XCAR (tail)); | |
6443 | p = XPROCESS (proc); | |
6444 | if (EQ (p->type, Qreal) && p->pid == pid) | |
6445 | break; | |
d0d6b7c5 | 6446 | p = 0; |
20ef56db | 6447 | } |
177c0ea7 | 6448 | |
20ef56db PE |
6449 | /* Look for an asynchronous process whose pid hasn't been filled |
6450 | in yet. */ | |
6451 | if (! p) | |
6452 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
6453 | { | |
6454 | proc = XCDR (XCAR (tail)); | |
6455 | p = XPROCESS (proc); | |
6456 | if (p->pid == -1) | |
6457 | break; | |
6458 | p = 0; | |
6459 | } | |
177c0ea7 | 6460 | |
20ef56db PE |
6461 | /* Change the status of the process that was found. */ |
6462 | if (p) | |
6463 | { | |
6464 | int clear_desc_flag = 0; | |
e98d950b | 6465 | |
20ef56db PE |
6466 | p->tick = ++process_tick; |
6467 | p->raw_status = w; | |
6468 | p->raw_status_new = 1; | |
6be429b1 | 6469 | |
20ef56db PE |
6470 | /* If process has terminated, stop waiting for its output. */ |
6471 | if ((WIFSIGNALED (w) || WIFEXITED (w)) | |
6472 | && p->infd >= 0) | |
6473 | clear_desc_flag = 1; | |
d0d6b7c5 | 6474 | |
20ef56db PE |
6475 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ |
6476 | if (clear_desc_flag) | |
d0d6b7c5 | 6477 | { |
20ef56db PE |
6478 | FD_CLR (p->infd, &input_wait_mask); |
6479 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
d0d6b7c5 JB |
6480 | } |
6481 | ||
20ef56db PE |
6482 | /* Tell wait_reading_process_output that it needs to wake up and |
6483 | look around. */ | |
6484 | if (input_available_clear_time) | |
6485 | *input_available_clear_time = make_emacs_time (0, 0); | |
6486 | } | |
6487 | /* There was no asynchronous process found for that pid: we have | |
6488 | a synchronous process. */ | |
6489 | else | |
6490 | { | |
6491 | synch_process_alive = 0; | |
6492 | ||
6493 | /* Report the status of the synchronous process. */ | |
6494 | if (WIFEXITED (w)) | |
6495 | synch_process_retcode = WEXITSTATUS (w); | |
6496 | else if (WIFSIGNALED (w)) | |
6497 | synch_process_termsig = WTERMSIG (w); | |
6498 | ||
6499 | /* Tell wait_reading_process_output that it needs to wake up and | |
6500 | look around. */ | |
6501 | if (input_available_clear_time) | |
6502 | *input_available_clear_time = make_emacs_time (0, 0); | |
6503 | } | |
6504 | ||
6505 | return true; | |
6506 | } | |
a5cfdda8 | 6507 | |
20ef56db PE |
6508 | /* On some systems, the SIGCHLD handler must return right away. If |
6509 | any more processes want to signal us, we will get another signal. | |
6510 | Otherwise, loop around to use up all the processes that have | |
6511 | something to tell us. */ | |
4e6277d8 | 6512 | #if (defined WINDOWSNT \ |
8a2a6032 | 6513 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6514 | && !(defined HPUX && defined WNOHANG))) |
20ef56db | 6515 | enum { CAN_HANDLE_MULTIPLE_CHILDREN = 0 }; |
0216c128 EZ |
6516 | #else |
6517 | enum { CAN_HANDLE_MULTIPLE_CHILDREN = 1 }; | |
20ef56db PE |
6518 | #endif |
6519 | ||
6520 | static void | |
6521 | handle_child_signal (int sig) | |
6522 | { | |
6523 | while (record_child_status_change () && CAN_HANDLE_MULTIPLE_CHILDREN) | |
6524 | continue; | |
d0d6b7c5 | 6525 | } |
20ef56db PE |
6526 | |
6527 | static void | |
6528 | deliver_child_signal (int sig) | |
6529 | { | |
6530 | handle_on_main_thread (sig, handle_child_signal); | |
6531 | } | |
6532 | ||
a5cfdda8 | 6533 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6534 | \f |
6535 | ||
6536 | static Lisp_Object | |
d3da34e0 | 6537 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6538 | { |
6a09a33b | 6539 | pset_sentinel (XPROCESS (XCAR (data)), XCDR (data)); |
d0d6b7c5 JB |
6540 | return Qnil; |
6541 | } | |
6542 | ||
3b9a3dfa | 6543 | static Lisp_Object |
b93aacde | 6544 | exec_sentinel_error_handler (Lisp_Object error_val) |
3b9a3dfa | 6545 | { |
b93aacde | 6546 | cmd_error_internal (error_val, "error in process sentinel: "); |
3b9a3dfa RS |
6547 | Vinhibit_quit = Qt; |
6548 | update_echo_area (); | |
833ba342 | 6549 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6550 | return Qt; |
3b9a3dfa RS |
6551 | } |
6552 | ||
d0d6b7c5 | 6553 | static void |
d3da34e0 | 6554 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6555 | { |
aba7731a | 6556 | Lisp_Object sentinel, odeactivate; |
1882aa38 | 6557 | struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 6558 | ptrdiff_t count = SPECPDL_INDEX (); |
1882aa38 | 6559 | bool outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6560 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6561 | |
84af9896 RS |
6562 | if (inhibit_sentinels) |
6563 | return; | |
6564 | ||
dfc21838 RS |
6565 | /* No need to gcpro these, because all we do with them later |
6566 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6567 | odeactivate = Vdeactivate_mark; |
aba7731a PE |
6568 | #if 0 |
6569 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 6570 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6571 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 6572 | #endif |
dfc21838 | 6573 | |
97e53006 SM |
6574 | /* There's no good reason to let sentinels change the current |
6575 | buffer, and many callers of accept-process-output, sit-for, and | |
6576 | friends don't expect current-buffer to be changed from under them. */ | |
66322887 | 6577 | record_unwind_current_buffer (); |
97e53006 | 6578 | |
4d2b044c | 6579 | sentinel = p->sentinel; |
d0d6b7c5 JB |
6580 | if (NILP (sentinel)) |
6581 | return; | |
6582 | ||
6583 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6584 | assure that it gets restored no matter how the sentinel exits. */ | |
6a09a33b | 6585 | pset_sentinel (p, Qnil); |
d0d6b7c5 JB |
6586 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); |
6587 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6588 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6589 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6590 | |
4da2f5be RS |
6591 | /* In case we get recursively called, |
6592 | and we already saved the match data nonrecursively, | |
6593 | save the same match data in safely recursive fashion. */ | |
6594 | if (outer_running_asynch_code) | |
6595 | { | |
6596 | Lisp_Object tem; | |
89f2614d KS |
6597 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6598 | restore_search_regs (); | |
6599 | record_unwind_save_match_data (); | |
6600 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6601 | } |
6602 | ||
6603 | /* For speed, if a search happens within this code, | |
6604 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6605 | running_asynch_code = 1; |
4da2f5be | 6606 | |
3b9a3dfa RS |
6607 | internal_condition_case_1 (read_process_output_call, |
6608 | Fcons (sentinel, | |
6609 | Fcons (proc, Fcons (reason, Qnil))), | |
6610 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6611 | exec_sentinel_error_handler); | |
4da2f5be RS |
6612 | |
6613 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6614 | restore_search_regs (); |
4da2f5be | 6615 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6616 | |
6617 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6618 | |
6619 | /* Restore waiting_for_user_input_p as it was | |
6620 | when we were called, in case the filter clobbered it. */ | |
6621 | waiting_for_user_input_p = waiting; | |
6622 | ||
7973cfa8 | 6623 | #if 0 |
dfc21838 RS |
6624 | if (! EQ (Fcurrent_buffer (), obuffer) |
6625 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6626 | #endif |
927e08be RS |
6627 | /* But do it only if the caller is actually going to read events. |
6628 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6629 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6630 | if (waiting_for_user_input_p == -1) |
6631 | record_asynch_buffer_change (); | |
8fb3cf64 | 6632 | |
2ea6d561 | 6633 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6634 | } |
6635 | ||
6636 | /* Report all recent events of a change in process status | |
6637 | (either run the sentinel or output a message). | |
b50fe468 RS |
6638 | This is usually done while Emacs is waiting for keyboard input |
6639 | but can be done at other times. */ | |
d0d6b7c5 | 6640 | |
ff6daed3 | 6641 | static void |
d3da34e0 | 6642 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6643 | { |
6644 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6645 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6646 | struct gcpro gcpro1, gcpro2; |
6647 | ||
2e4149a8 KH |
6648 | tail = Qnil; |
6649 | msg = Qnil; | |
d0d6b7c5 JB |
6650 | /* We need to gcpro tail; if read_process_output calls a filter |
6651 | which deletes a process and removes the cons to which tail points | |
6652 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6653 | reference. */ | |
6654 | GCPRO2 (tail, msg); | |
6655 | ||
30623085 RS |
6656 | /* Set this now, so that if new processes are created by sentinels |
6657 | that we run, we get called again to handle their status changes. */ | |
6658 | update_tick = process_tick; | |
6659 | ||
99784d63 | 6660 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6661 | { |
30623085 RS |
6662 | Lisp_Object symbol; |
6663 | register struct Lisp_Process *p; | |
6664 | ||
99784d63 | 6665 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6666 | p = XPROCESS (proc); |
6667 | ||
60f0fb11 | 6668 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6669 | { |
60f0fb11 | 6670 | p->update_tick = p->tick; |
d0d6b7c5 | 6671 | |
30623085 | 6672 | /* If process is still active, read any output that remains. */ |
4d2b044c DA |
6673 | while (! EQ (p->filter, Qt) |
6674 | && ! EQ (p->status, Qconnect) | |
6675 | && ! EQ (p->status, Qlisten) | |
d888760c | 6676 | /* Network or serial process not stopped: */ |
4d2b044c | 6677 | && ! EQ (p->command, Qt) |
60f0fb11 | 6678 | && p->infd >= 0 |
ff6daed3 | 6679 | && p != deleting_process |
60f0fb11 | 6680 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6681 | |
4d2b044c | 6682 | buffer = p->buffer; |
d0d6b7c5 | 6683 | |
30623085 | 6684 | /* Get the text to use for the message. */ |
6bfd98e7 | 6685 | if (p->raw_status_new) |
30623085 | 6686 | update_status (p); |
116c423c | 6687 | msg = status_message (p); |
d0d6b7c5 | 6688 | |
30623085 | 6689 | /* If process is terminated, deactivate it or delete it. */ |
4d2b044c DA |
6690 | symbol = p->status; |
6691 | if (CONSP (p->status)) | |
6692 | symbol = XCAR (p->status); | |
d0d6b7c5 | 6693 | |
30623085 RS |
6694 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6695 | || EQ (symbol, Qclosed)) | |
6696 | { | |
6697 | if (delete_exited_processes) | |
6698 | remove_process (proc); | |
6699 | else | |
6700 | deactivate_process (proc); | |
6701 | } | |
d0d6b7c5 | 6702 | |
0ad61fe7 RS |
6703 | /* The actions above may have further incremented p->tick. |
6704 | So set p->update_tick again | |
6705 | so that an error in the sentinel will not cause | |
6706 | this code to be run again. */ | |
60f0fb11 | 6707 | p->update_tick = p->tick; |
30623085 | 6708 | /* Now output the message suitably. */ |
4d2b044c | 6709 | if (!NILP (p->sentinel)) |
30623085 RS |
6710 | exec_sentinel (proc, msg); |
6711 | /* Don't bother with a message in the buffer | |
6712 | when a process becomes runnable. */ | |
6713 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6714 | { | |
01f5787b | 6715 | Lisp_Object tem; |
30623085 | 6716 | struct buffer *old = current_buffer; |
d311d28c PE |
6717 | ptrdiff_t opoint, opoint_byte; |
6718 | ptrdiff_t before, before_byte; | |
2e4149a8 | 6719 | |
30623085 RS |
6720 | /* Avoid error if buffer is deleted |
6721 | (probably that's why the process is dead, too) */ | |
e578f381 | 6722 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
30623085 RS |
6723 | continue; |
6724 | Fset_buffer (buffer); | |
12ca5cdf | 6725 | |
6ec8bbd2 | 6726 | opoint = PT; |
d8a2934e | 6727 | opoint_byte = PT_BYTE; |
30623085 RS |
6728 | /* Insert new output into buffer |
6729 | at the current end-of-output marker, | |
6730 | thus preserving logical ordering of input and output. */ | |
4d2b044c DA |
6731 | if (XMARKER (p->mark)->buffer) |
6732 | Fgoto_char (p->mark); | |
30623085 | 6733 | else |
d8a2934e | 6734 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6735 | |
6736 | before = PT; | |
d8a2934e | 6737 | before_byte = PT_BYTE; |
30623085 | 6738 | |
4b4deea2 | 6739 | tem = BVAR (current_buffer, read_only); |
39eb03f1 | 6740 | bset_read_only (current_buffer, Qnil); |
30623085 | 6741 | insert_string ("\nProcess "); |
21238f11 | 6742 | { /* FIXME: temporary kludge */ |
4d2b044c | 6743 | Lisp_Object tem2 = p->name; Finsert (1, &tem2); } |
30623085 RS |
6744 | insert_string (" "); |
6745 | Finsert (1, &msg); | |
39eb03f1 | 6746 | bset_read_only (current_buffer, tem); |
4d2b044c | 6747 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6748 | |
12ca5cdf | 6749 | if (opoint >= before) |
d8a2934e RS |
6750 | SET_PT_BOTH (opoint + (PT - before), |
6751 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6752 | else |
d8a2934e | 6753 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6754 | |
30623085 | 6755 | set_buffer_internal (old); |
d0d6b7c5 | 6756 | } |
30623085 RS |
6757 | } |
6758 | } /* end for */ | |
d0d6b7c5 JB |
6759 | |
6760 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6761 | UNGCPRO; |
6762 | } | |
0fa1789e KH |
6763 | |
6764 | \f | |
6765 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6766 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6767 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6768 | DECODING will be used to decode subprocess output and ENCODING to | |
6769 | encode subprocess input. */) | |
5842a27b | 6770 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6771 | { |
6772 | register struct Lisp_Process *p; | |
6773 | ||
f3d9532b JB |
6774 | CHECK_PROCESS (process); |
6775 | p = XPROCESS (process); | |
60f0fb11 | 6776 | if (p->infd < 0) |
4d2b044c | 6777 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6778 | if (p->outfd < 0) |
4d2b044c | 6779 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6780 | Fcheck_coding_system (decoding); |
6781 | Fcheck_coding_system (encoding); | |
76d812bb | 6782 | encoding = coding_inherit_eol_type (encoding, Qnil); |
6a09a33b PE |
6783 | pset_decode_coding_system (p, decoding); |
6784 | pset_encode_coding_system (p, encoding); | |
f3d9532b | 6785 | setup_process_coding_systems (process); |
0fa1789e KH |
6786 | |
6787 | return Qnil; | |
6788 | } | |
6789 | ||
6790 | DEFUN ("process-coding-system", | |
6791 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6792 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6793 | (register Lisp_Object process) |
0fa1789e | 6794 | { |
f3d9532b | 6795 | CHECK_PROCESS (process); |
4d2b044c DA |
6796 | return Fcons (XPROCESS (process)->decode_coding_system, |
6797 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6798 | } |
03f04413 KH |
6799 | |
6800 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6801 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6802 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6803 | If FLAG is non-nil, the filter is given multibyte strings. | |
6804 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6805 | all character code conversion except for end-of-line conversion is |
6806 | suppressed. */) | |
5842a27b | 6807 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6808 | { |
6809 | register struct Lisp_Process *p; | |
6810 | ||
f3d9532b JB |
6811 | CHECK_PROCESS (process); |
6812 | p = XPROCESS (process); | |
5431bd6a | 6813 | if (NILP (flag)) |
6a09a33b PE |
6814 | pset_decode_coding_system |
6815 | (p, raw_text_coding_system (p->decode_coding_system)); | |
f3d9532b | 6816 | setup_process_coding_systems (process); |
03f04413 KH |
6817 | |
6818 | return Qnil; | |
6819 | } | |
6820 | ||
6821 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6822 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6823 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6824 | (Lisp_Object process) |
03f04413 KH |
6825 | { |
6826 | register struct Lisp_Process *p; | |
5431bd6a | 6827 | struct coding_system *coding; |
03f04413 | 6828 | |
f3d9532b JB |
6829 | CHECK_PROCESS (process); |
6830 | p = XPROCESS (process); | |
5431bd6a SM |
6831 | coding = proc_decode_coding_system[p->infd]; |
6832 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6833 | } |
6834 | ||
6835 | ||
d0d6b7c5 | 6836 | \f |
cb768704 | 6837 | |
4475bec4 PE |
6838 | # ifdef HAVE_GPM |
6839 | ||
994d9841 | 6840 | void |
d3da34e0 | 6841 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6842 | { |
3fad2ad2 | 6843 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6844 | } |
6845 | ||
994d9841 | 6846 | void |
d3da34e0 | 6847 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6848 | { |
3fad2ad2 | 6849 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6850 | } |
6851 | ||
4475bec4 PE |
6852 | # endif |
6853 | ||
4a4bbad2 | 6854 | # ifdef USABLE_SIGIO |
006c5daa | 6855 | |
a69281ff RS |
6856 | /* Return nonzero if *MASK has a bit set |
6857 | that corresponds to one of the keyboard input descriptors. */ | |
6858 | ||
ff6daed3 | 6859 | static int |
d3da34e0 | 6860 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6861 | { |
6862 | int fd; | |
6863 | ||
3fad2ad2 | 6864 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6865 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6866 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6867 | return 1; | |
6868 | ||
6869 | return 0; | |
6870 | } | |
006c5daa | 6871 | # endif |
934e2a68 | 6872 | |
f388c88a | 6873 | #else /* not subprocesses */ |
934e2a68 | 6874 | |
f388c88a EZ |
6875 | /* Defined on msdos.c. */ |
6876 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
0d23c240 | 6877 | EMACS_TIME *, void *); |
934e2a68 | 6878 | |
f388c88a EZ |
6879 | /* Implementation of wait_reading_process_output, assuming that there |
6880 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6881 | |
f388c88a | 6882 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6883 | |
d188e26b | 6884 | TIME_LIMIT is: |
d35af63c PE |
6885 | timeout in seconds |
6886 | If negative, gobble data immediately available but don't wait for any. | |
6887 | ||
d188e26b | 6888 | NSECS is: |
d35af63c PE |
6889 | an additional duration to wait, measured in nanoseconds |
6890 | If TIME_LIMIT is zero, then: | |
d188e26b PE |
6891 | If NSECS == 0, there is no limit. |
6892 | If NSECS > 0, the timeout consists of NSECS only. | |
d35af63c | 6893 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
934e2a68 | 6894 | |
a0bee46f | 6895 | READ_KBD is: |
f388c88a EZ |
6896 | 0 to ignore keyboard input, or |
6897 | 1 to return when input is available, or | |
6898 | -1 means caller will actually read the input, so don't throw to | |
6899 | the quit handler. | |
934e2a68 | 6900 | |
f388c88a EZ |
6901 | see full version for other parameters. We know that wait_proc will |
6902 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6903 | |
d188e26b | 6904 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
f388c88a | 6905 | output that arrives. |
934e2a68 | 6906 | |
f388c88a EZ |
6907 | Return true if we received input from any process. */ |
6908 | ||
6909 | int | |
d35af63c | 6910 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
1408902e EZ |
6911 | int do_display, |
6912 | Lisp_Object wait_for_cell, | |
6913 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6914 | { |
f388c88a EZ |
6915 | register int nfds; |
6916 | EMACS_TIME end_time, timeout; | |
d0d6b7c5 | 6917 | |
d35af63c PE |
6918 | if (time_limit < 0) |
6919 | { | |
6920 | time_limit = 0; | |
6921 | nsecs = -1; | |
6922 | } | |
6923 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
6924 | time_limit = TYPE_MAXIMUM (time_t); | |
6925 | ||
f388c88a | 6926 | /* What does time_limit really mean? */ |
216ee680 | 6927 | if (time_limit || 0 < nsecs) |
f388c88a | 6928 | { |
e9a9ae03 PE |
6929 | timeout = make_emacs_time (time_limit, nsecs); |
6930 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
f388c88a | 6931 | } |
84af9896 | 6932 | |
f388c88a EZ |
6933 | /* Turn off periodic alarms (in case they are in use) |
6934 | and then turn off any other atimers, | |
6935 | because the select emulator uses alarms. */ | |
6936 | stop_polling (); | |
6937 | turn_on_atimers (0); | |
d0d6b7c5 | 6938 | |
f388c88a EZ |
6939 | while (1) |
6940 | { | |
6941 | int timeout_reduced_for_timers = 0; | |
a0bee46f PE |
6942 | SELECT_TYPE waitchannels; |
6943 | int xerrno; | |
dd2281ae | 6944 | |
f388c88a EZ |
6945 | /* If calling from keyboard input, do not quit |
6946 | since we want to return C-g as an input character. | |
6947 | Otherwise, do pending quit if requested. */ | |
6948 | if (read_kbd >= 0) | |
6949 | QUIT; | |
bad49fc7 | 6950 | |
f388c88a EZ |
6951 | /* Exit now if the cell we're waiting for became non-nil. */ |
6952 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6953 | break; | |
0a65b032 | 6954 | |
bae8d137 RS |
6955 | /* Compute time from now till when time limit is up */ |
6956 | /* Exit if already run out */ | |
d35af63c | 6957 | if (nsecs < 0) |
52fd88d3 | 6958 | { |
216ee680 | 6959 | /* A negative timeout means |
52fd88d3 EZ |
6960 | gobble output available now |
6961 | but don't wait at all. */ | |
6962 | ||
e9a9ae03 | 6963 | timeout = make_emacs_time (0, 0); |
52fd88d3 | 6964 | } |
216ee680 | 6965 | else if (time_limit || 0 < nsecs) |
6720a7fb | 6966 | { |
e9a9ae03 PE |
6967 | EMACS_TIME now = current_emacs_time (); |
6968 | if (EMACS_TIME_LE (end_time, now)) | |
6720a7fb | 6969 | break; |
e9a9ae03 | 6970 | timeout = sub_emacs_time (end_time, now); |
6720a7fb | 6971 | } |
52fd88d3 EZ |
6972 | else |
6973 | { | |
e9a9ae03 | 6974 | timeout = make_emacs_time (100000, 0); |
52fd88d3 | 6975 | } |
6720a7fb | 6976 | |
bae8d137 RS |
6977 | /* If our caller will not immediately handle keyboard events, |
6978 | run timer events directly. | |
6979 | (Callers that will immediately read keyboard events | |
6980 | call timer_delay on their own.) */ | |
f3fbd155 | 6981 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6982 | { |
6983 | EMACS_TIME timer_delay; | |
0a65b032 | 6984 | |
9baacf76 | 6985 | do |
0a65b032 | 6986 | { |
9baacf76 | 6987 | int old_timers_run = timers_run; |
f868cd8a | 6988 | timer_delay = timer_check (); |
9baacf76 GM |
6989 | if (timers_run != old_timers_run && do_display) |
6990 | /* We must retry, since a timer may have requeued itself | |
6991 | and that could alter the time delay. */ | |
3007ebfb | 6992 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6993 | else |
6994 | break; | |
0a65b032 | 6995 | } |
9baacf76 | 6996 | while (!detect_input_pending ()); |
0a65b032 | 6997 | |
52fd88d3 | 6998 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6999 | if (read_kbd != 0 |
52fd88d3 EZ |
7000 | && requeued_events_pending_p ()) |
7001 | break; | |
7002 | ||
d35af63c | 7003 | if (EMACS_TIME_VALID_P (timer_delay) && 0 <= nsecs) |
bae8d137 | 7004 | { |
d35af63c | 7005 | if (EMACS_TIME_LT (timer_delay, timeout)) |
bae8d137 | 7006 | { |
f694e5d2 | 7007 | timeout = timer_delay; |
bae8d137 RS |
7008 | timeout_reduced_for_timers = 1; |
7009 | } | |
7010 | } | |
7011 | } | |
7012 | ||
6720a7fb JB |
7013 | /* Cause C-g and alarm signals to take immediate action, |
7014 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7015 | if (read_kbd < 0) |
6720a7fb JB |
7016 | set_waiting_for_input (&timeout); |
7017 | ||
ff11dfa1 | 7018 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7019 | reprocess its display stuff. */ |
5164ee8e | 7020 | if (frame_garbaged && do_display) |
0a65b032 RS |
7021 | { |
7022 | clear_waiting_for_input (); | |
3007ebfb | 7023 | redisplay_preserve_echo_area (15); |
b89a415a | 7024 | if (read_kbd < 0) |
0a65b032 RS |
7025 | set_waiting_for_input (&timeout); |
7026 | } | |
6720a7fb | 7027 | |
a0bee46f PE |
7028 | /* Wait till there is something to do. */ |
7029 | FD_ZERO (&waitchannels); | |
b89a415a | 7030 | if (read_kbd && detect_input_pending ()) |
a0bee46f PE |
7031 | nfds = 0; |
7032 | else | |
1861b214 | 7033 | { |
a0bee46f PE |
7034 | if (read_kbd || !NILP (wait_for_cell)) |
7035 | FD_SET (0, &waitchannels); | |
7036 | nfds = pselect (1, &waitchannels, NULL, NULL, &timeout, NULL); | |
1861b214 | 7037 | } |
f694e5d2 KH |
7038 | |
7039 | xerrno = errno; | |
6720a7fb JB |
7040 | |
7041 | /* Make C-g and alarm signals set flags again */ | |
7042 | clear_waiting_for_input (); | |
7043 | ||
7044 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7045 | do_pending_window_change (0); |
6720a7fb | 7046 | |
d35af63c | 7047 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
f694e5d2 KH |
7048 | /* We waited the full specified time, so return now. */ |
7049 | break; | |
7050 | ||
6720a7fb JB |
7051 | if (nfds == -1) |
7052 | { | |
7053 | /* If the system call was interrupted, then go around the | |
7054 | loop again. */ | |
f694e5d2 | 7055 | if (xerrno == EINTR) |
8db121c4 | 7056 | FD_ZERO (&waitchannels); |
f694e5d2 | 7057 | else |
68c45bf0 | 7058 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 7059 | } |
6720a7fb | 7060 | |
f694e5d2 KH |
7061 | /* Check for keyboard input */ |
7062 | ||
b89a415a | 7063 | if (read_kbd |
78c1afb6 | 7064 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7065 | { |
78c1afb6 | 7066 | swallow_events (do_display); |
f694e5d2 | 7067 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7068 | break; |
78c1afb6 EZ |
7069 | } |
7070 | ||
52fd88d3 | 7071 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7072 | if (read_kbd |
52fd88d3 EZ |
7073 | && requeued_events_pending_p ()) |
7074 | break; | |
7075 | ||
f854a00b RS |
7076 | /* If wait_for_cell. check for keyboard input |
7077 | but don't run any timers. | |
7078 | ??? (It seems wrong to me to check for keyboard | |
7079 | input at all when wait_for_cell, but the code | |
7080 | has been this way since July 1994. | |
7081 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7082 | if (! NILP (wait_for_cell) |
f854a00b RS |
7083 | && detect_input_pending ()) |
7084 | { | |
7085 | swallow_events (do_display); | |
7086 | if (detect_input_pending ()) | |
7087 | break; | |
7088 | } | |
7089 | ||
0a65b032 | 7090 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7091 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7092 | break; |
6720a7fb JB |
7093 | } |
7094 | ||
a87b802f JB |
7095 | start_polling (); |
7096 | ||
6720a7fb JB |
7097 | return 0; |
7098 | } | |
7099 | ||
f388c88a EZ |
7100 | #endif /* not subprocesses */ |
7101 | ||
7102 | /* The following functions are needed even if async subprocesses are | |
7103 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 7104 | |
01faa934 DN |
7105 | /* Add DESC to the set of keyboard input descriptors. */ |
7106 | ||
7107 | void | |
7108 | add_keyboard_wait_descriptor (int desc) | |
7109 | { | |
bf05eed6 | 7110 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
7111 | FD_SET (desc, &input_wait_mask); |
7112 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
7113 | if (desc > max_input_desc) |
7114 | max_input_desc = desc; | |
bf05eed6 | 7115 | #endif |
01faa934 DN |
7116 | } |
7117 | ||
7118 | /* From now on, do not expect DESC to give keyboard input. */ | |
7119 | ||
7120 | void | |
7121 | delete_keyboard_wait_descriptor (int desc) | |
7122 | { | |
bf05eed6 | 7123 | #ifdef subprocesses |
01faa934 | 7124 | int fd; |
3fad2ad2 | 7125 | int lim = max_input_desc; |
01faa934 DN |
7126 | |
7127 | FD_CLR (desc, &input_wait_mask); | |
7128 | FD_CLR (desc, &non_process_wait_mask); | |
7129 | ||
3fad2ad2 | 7130 | if (desc == max_input_desc) |
01faa934 | 7131 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
7132 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
7133 | max_input_desc = fd; | |
bf05eed6 | 7134 | #endif |
01faa934 DN |
7135 | } |
7136 | ||
fc549af9 EZ |
7137 | /* Setup coding systems of PROCESS. */ |
7138 | ||
7139 | void | |
7140 | setup_process_coding_systems (Lisp_Object process) | |
7141 | { | |
7142 | #ifdef subprocesses | |
7143 | struct Lisp_Process *p = XPROCESS (process); | |
7144 | int inch = p->infd; | |
7145 | int outch = p->outfd; | |
7146 | Lisp_Object coding_system; | |
7147 | ||
7148 | if (inch < 0 || outch < 0) | |
7149 | return; | |
7150 | ||
7151 | if (!proc_decode_coding_system[inch]) | |
38182d90 | 7152 | proc_decode_coding_system[inch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c DA |
7153 | coding_system = p->decode_coding_system; |
7154 | if (! NILP (p->filter)) | |
fc549af9 | 7155 | ; |
4d2b044c | 7156 | else if (BUFFERP (p->buffer)) |
fc549af9 | 7157 | { |
4d2b044c | 7158 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
7159 | coding_system = raw_text_coding_system (coding_system); |
7160 | } | |
7161 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7162 | ||
7163 | if (!proc_encode_coding_system[outch]) | |
38182d90 | 7164 | proc_encode_coding_system[outch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c | 7165 | setup_coding_system (p->encode_coding_system, |
fc549af9 EZ |
7166 | proc_encode_coding_system[outch]); |
7167 | #endif | |
7168 | } | |
7169 | ||
7170 | /* Close all descriptors currently in use for communication | |
7171 | with subprocess. This is used in a newly-forked subprocess | |
7172 | to get rid of irrelevant descriptors. */ | |
7173 | ||
7174 | void | |
7175 | close_process_descs (void) | |
7176 | { | |
7177 | #ifndef DOS_NT | |
7178 | int i; | |
7179 | for (i = 0; i < MAXDESC; i++) | |
7180 | { | |
7181 | Lisp_Object process; | |
7182 | process = chan_process[i]; | |
7183 | if (!NILP (process)) | |
7184 | { | |
7185 | int in = XPROCESS (process)->infd; | |
7186 | int out = XPROCESS (process)->outfd; | |
7187 | if (in >= 0) | |
7188 | emacs_close (in); | |
7189 | if (out >= 0 && in != out) | |
7190 | emacs_close (out); | |
7191 | } | |
7192 | } | |
7193 | #endif | |
7194 | } | |
7195 | ||
6720a7fb | 7196 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7197 | doc: /* Return the (or a) process associated with BUFFER. |
7198 | BUFFER may be a buffer or the name of one. */) | |
7199 | (register Lisp_Object buffer) | |
6720a7fb | 7200 | { |
f388c88a EZ |
7201 | #ifdef subprocesses |
7202 | register Lisp_Object buf, tail, proc; | |
7203 | ||
7204 | if (NILP (buffer)) return Qnil; | |
7205 | buf = Fget_buffer (buffer); | |
7206 | if (NILP (buf)) return Qnil; | |
7207 | ||
7208 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7209 | { | |
7210 | proc = Fcdr (XCAR (tail)); | |
4d2b044c | 7211 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
f388c88a EZ |
7212 | return proc; |
7213 | } | |
7214 | #endif /* subprocesses */ | |
6720a7fb JB |
7215 | return Qnil; |
7216 | } | |
7217 | ||
52a1b894 | 7218 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7219 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7220 | 1, 1, 0, | |
f388c88a EZ |
7221 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7222 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7223 | associated with PROCESS will inherit the coding system used to decode | |
7224 | the process output. */) | |
5842a27b | 7225 | (register Lisp_Object process) |
52a1b894 | 7226 | { |
f388c88a EZ |
7227 | #ifdef subprocesses |
7228 | CHECK_PROCESS (process); | |
7229 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7230 | #else | |
52a1b894 EZ |
7231 | /* Ignore the argument and return the value of |
7232 | inherit-process-coding-system. */ | |
7233 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7234 | #endif |
52a1b894 EZ |
7235 | } |
7236 | ||
6720a7fb | 7237 | /* Kill all processes associated with `buffer'. |
f388c88a | 7238 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7239 | |
d9bb0c32 | 7240 | void |
f388c88a | 7241 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7242 | { |
f388c88a EZ |
7243 | #ifdef subprocesses |
7244 | Lisp_Object tail, proc; | |
7245 | ||
7246 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7247 | { | |
7248 | proc = XCDR (XCAR (tail)); | |
7249 | if (PROCESSP (proc) | |
4d2b044c | 7250 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
f388c88a EZ |
7251 | { |
7252 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7253 | Fdelete_process (proc); | |
7254 | else if (XPROCESS (proc)->infd >= 0) | |
7255 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7256 | } | |
7257 | } | |
7258 | #else /* subprocesses */ | |
7259 | /* Since we have no subprocesses, this does nothing. */ | |
7260 | #endif /* subprocesses */ | |
6720a7fb JB |
7261 | } |
7262 | ||
a7ca3326 | 7263 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, |
16a97296 | 7264 | Swaiting_for_user_input_p, 0, 0, 0, |
77defa9a EZ |
7265 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
7266 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7267 | (void) | |
7268 | { | |
7269 | #ifdef subprocesses | |
7270 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7271 | #else | |
7272 | return Qnil; | |
7273 | #endif | |
7274 | } | |
7275 | ||
d568829b EZ |
7276 | /* Stop reading input from keyboard sources. */ |
7277 | ||
7278 | void | |
7279 | hold_keyboard_input (void) | |
7280 | { | |
7281 | kbd_is_on_hold = 1; | |
7282 | } | |
7283 | ||
7284 | /* Resume reading input from keyboard sources. */ | |
7285 | ||
7286 | void | |
7287 | unhold_keyboard_input (void) | |
7288 | { | |
7289 | kbd_is_on_hold = 0; | |
7290 | } | |
7291 | ||
7292 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7293 | ||
7294 | int | |
7295 | kbd_on_hold_p (void) | |
7296 | { | |
7297 | return kbd_is_on_hold; | |
7298 | } | |
7299 | ||
f388c88a EZ |
7300 | \f |
7301 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7302 | ||
934e2a68 EZ |
7303 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7304 | 0, 0, 0, | |
7305 | doc: /* Return a list of numerical process IDs of all running processes. | |
7306 | If this functionality is unsupported, return nil. | |
7307 | ||
f388c88a EZ |
7308 | See `process-attributes' for getting attributes of a process given its ID. */) |
7309 | (void) | |
7310 | { | |
7311 | return list_system_processes (); | |
7312 | } | |
7313 | ||
7314 | DEFUN ("process-attributes", Fprocess_attributes, | |
7315 | Sprocess_attributes, 1, 1, 0, | |
7316 | doc: /* Return attributes of the process given by its PID, a number. | |
7317 | ||
7318 | Value is an alist where each element is a cons cell of the form | |
7319 | ||
7320 | \(KEY . VALUE) | |
7321 | ||
7322 | If this functionality is unsupported, the value is nil. | |
7323 | ||
7324 | See `list-system-processes' for getting a list of all process IDs. | |
7325 | ||
7326 | The KEYs of the attributes that this function may return are listed | |
7327 | below, together with the type of the associated VALUE (in parentheses). | |
7328 | Not all platforms support all of these attributes; unsupported | |
7329 | attributes will not appear in the returned alist. | |
7330 | Unless explicitly indicated otherwise, numbers can have either | |
7331 | integer or floating point values. | |
7332 | ||
7333 | euid -- Effective user User ID of the process (number) | |
7334 | user -- User name corresponding to euid (string) | |
7335 | egid -- Effective user Group ID of the process (number) | |
7336 | group -- Group name corresponding to egid (string) | |
7337 | comm -- Command name (executable name only) (string) | |
7338 | state -- Process state code, such as "S", "R", or "T" (string) | |
7339 | ppid -- Parent process ID (number) | |
7340 | pgrp -- Process group ID (number) | |
7341 | sess -- Session ID, i.e. process ID of session leader (number) | |
7342 | ttname -- Controlling tty name (string) | |
7343 | tpgid -- ID of foreground process group on the process's tty (number) | |
7344 | minflt -- number of minor page faults (number) | |
7345 | majflt -- number of major page faults (number) | |
7346 | cminflt -- cumulative number of minor page faults (number) | |
7347 | cmajflt -- cumulative number of major page faults (number) | |
d35af63c PE |
7348 | utime -- user time used by the process, in (current-time) format, |
7349 | which is a list of integers (HIGH LOW USEC PSEC) | |
7350 | stime -- system time used by the process (current-time) | |
7351 | time -- sum of utime and stime (current-time) | |
7352 | cutime -- user time used by the process and its children (current-time) | |
7353 | cstime -- system time used by the process and its children (current-time) | |
7354 | ctime -- sum of cutime and cstime (current-time) | |
f388c88a EZ |
7355 | pri -- priority of the process (number) |
7356 | nice -- nice value of the process (number) | |
7357 | thcount -- process thread count (number) | |
d35af63c | 7358 | start -- time the process started (current-time) |
f388c88a EZ |
7359 | vsize -- virtual memory size of the process in KB's (number) |
7360 | rss -- resident set size of the process in KB's (number) | |
d35af63c | 7361 | etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format |
f388c88a EZ |
7362 | pcpu -- percents of CPU time used by the process (floating-point number) |
7363 | pmem -- percents of total physical memory used by process's resident set | |
7364 | (floating-point number) | |
7365 | args -- command line which invoked the process (string). */) | |
7366 | ( Lisp_Object pid) | |
7367 | { | |
7368 | return system_process_attributes (pid); | |
7369 | } | |
7370 | ||
7371 | \f | |
b82da769 GM |
7372 | /* This is not called "init_process" because that is the name of a |
7373 | Mach system call, so it would cause problems on Darwin systems. */ | |
f388c88a | 7374 | void |
b82da769 | 7375 | init_process_emacs (void) |
f388c88a EZ |
7376 | { |
7377 | #ifdef subprocesses | |
7378 | register int i; | |
7379 | ||
7380 | inhibit_sentinels = 0; | |
7381 | ||
7382 | #ifdef SIGCHLD | |
7383 | #ifndef CANNOT_DUMP | |
7384 | if (! noninteractive || initialized) | |
7385 | #endif | |
2fe28299 PE |
7386 | { |
7387 | struct sigaction action; | |
7388 | emacs_sigaction_init (&action, deliver_child_signal); | |
7389 | sigaction (SIGCHLD, &action, 0); | |
7390 | } | |
f388c88a EZ |
7391 | #endif |
7392 | ||
7393 | FD_ZERO (&input_wait_mask); | |
7394 | FD_ZERO (&non_keyboard_wait_mask); | |
7395 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7396 | FD_ZERO (&write_mask); |
f388c88a | 7397 | max_process_desc = 0; |
3fad2ad2 | 7398 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7399 | |
7400 | #ifdef NON_BLOCKING_CONNECT | |
7401 | FD_ZERO (&connect_wait_mask); | |
7402 | num_pending_connects = 0; | |
7403 | #endif | |
7404 | ||
7405 | #ifdef ADAPTIVE_READ_BUFFERING | |
7406 | process_output_delay_count = 0; | |
7407 | process_output_skip = 0; | |
7408 | #endif | |
7409 | ||
7410 | /* Don't do this, it caused infinite select loops. The display | |
7411 | method should call add_keyboard_wait_descriptor on stdin if it | |
7412 | needs that. */ | |
7413 | #if 0 | |
7414 | FD_SET (0, &input_wait_mask); | |
7415 | #endif | |
7416 | ||
7417 | Vprocess_alist = Qnil; | |
7418 | #ifdef SIGCHLD | |
7419 | deleted_pid_list = Qnil; | |
7420 | #endif | |
7421 | for (i = 0; i < MAXDESC; i++) | |
7422 | { | |
7423 | chan_process[i] = Qnil; | |
7424 | proc_buffered_char[i] = -1; | |
7425 | } | |
7426 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7427 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7428 | #ifdef DATAGRAM_SOCKETS | |
7429 | memset (datagram_address, 0, sizeof datagram_address); | |
7430 | #endif | |
7431 | ||
f388c88a EZ |
7432 | { |
7433 | Lisp_Object subfeatures = Qnil; | |
7434 | const struct socket_options *sopt; | |
7435 | ||
7436 | #define ADD_SUBFEATURE(key, val) \ | |
7437 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7438 | ||
7439 | #ifdef NON_BLOCKING_CONNECT | |
7440 | ADD_SUBFEATURE (QCnowait, Qt); | |
7441 | #endif | |
7442 | #ifdef DATAGRAM_SOCKETS | |
7443 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7444 | #endif | |
7445 | #ifdef HAVE_SEQPACKET | |
7446 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7447 | #endif | |
7448 | #ifdef HAVE_LOCAL_SOCKETS | |
7449 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7450 | #endif | |
7451 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7452 | #ifdef AF_INET6 | |
7453 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7454 | #endif | |
7455 | #ifdef HAVE_GETSOCKNAME | |
7456 | ADD_SUBFEATURE (QCservice, Qt); | |
7457 | #endif | |
5e617bc2 | 7458 | #if defined (O_NONBLOCK) || defined (O_NDELAY) |
f388c88a EZ |
7459 | ADD_SUBFEATURE (QCserver, Qt); |
7460 | #endif | |
7461 | ||
7462 | for (sopt = socket_options; sopt->name; sopt++) | |
7463 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7464 | ||
7465 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7466 | } | |
f388c88a EZ |
7467 | |
7468 | #if defined (DARWIN_OS) | |
7469 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7470 | processes. As such, we only change the default value. */ | |
7471 | if (initialized) | |
7472 | { | |
f44bd759 PE |
7473 | char const *release = (STRINGP (Voperating_system_release) |
7474 | ? SSDATA (Voperating_system_release) | |
7475 | : 0); | |
6de0e799 | 7476 | if (!release || !release[0] || (release[0] < '7' && release[1] == '.')) { |
f388c88a EZ |
7477 | Vprocess_connection_type = Qnil; |
7478 | } | |
7479 | } | |
7480 | #endif | |
7481 | #endif /* subprocesses */ | |
7482 | kbd_is_on_hold = 0; | |
7483 | } | |
7484 | ||
7485 | void | |
7486 | syms_of_process (void) | |
7487 | { | |
7488 | #ifdef subprocesses | |
7489 | ||
cd3520a4 JB |
7490 | DEFSYM (Qprocessp, "processp"); |
7491 | DEFSYM (Qrun, "run"); | |
7492 | DEFSYM (Qstop, "stop"); | |
7493 | DEFSYM (Qsignal, "signal"); | |
f388c88a EZ |
7494 | |
7495 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7496 | here again. | |
934e2a68 | 7497 | |
f388c88a EZ |
7498 | Qexit = intern_c_string ("exit"); |
7499 | staticpro (&Qexit); */ | |
934e2a68 | 7500 | |
cd3520a4 JB |
7501 | DEFSYM (Qopen, "open"); |
7502 | DEFSYM (Qclosed, "closed"); | |
7503 | DEFSYM (Qconnect, "connect"); | |
7504 | DEFSYM (Qfailed, "failed"); | |
7505 | DEFSYM (Qlisten, "listen"); | |
7506 | DEFSYM (Qlocal, "local"); | |
7507 | DEFSYM (Qipv4, "ipv4"); | |
f388c88a | 7508 | #ifdef AF_INET6 |
cd3520a4 JB |
7509 | DEFSYM (Qipv6, "ipv6"); |
7510 | #endif | |
7511 | DEFSYM (Qdatagram, "datagram"); | |
7512 | DEFSYM (Qseqpacket, "seqpacket"); | |
7513 | ||
7514 | DEFSYM (QCport, ":port"); | |
7515 | DEFSYM (QCspeed, ":speed"); | |
7516 | DEFSYM (QCprocess, ":process"); | |
7517 | ||
7518 | DEFSYM (QCbytesize, ":bytesize"); | |
7519 | DEFSYM (QCstopbits, ":stopbits"); | |
7520 | DEFSYM (QCparity, ":parity"); | |
7521 | DEFSYM (Qodd, "odd"); | |
7522 | DEFSYM (Qeven, "even"); | |
7523 | DEFSYM (QCflowcontrol, ":flowcontrol"); | |
7524 | DEFSYM (Qhw, "hw"); | |
7525 | DEFSYM (Qsw, "sw"); | |
7526 | DEFSYM (QCsummary, ":summary"); | |
7527 | ||
7528 | DEFSYM (Qreal, "real"); | |
7529 | DEFSYM (Qnetwork, "network"); | |
7530 | DEFSYM (Qserial, "serial"); | |
7531 | DEFSYM (QCbuffer, ":buffer"); | |
7532 | DEFSYM (QChost, ":host"); | |
7533 | DEFSYM (QCservice, ":service"); | |
7534 | DEFSYM (QClocal, ":local"); | |
7535 | DEFSYM (QCremote, ":remote"); | |
7536 | DEFSYM (QCcoding, ":coding"); | |
7537 | DEFSYM (QCserver, ":server"); | |
7538 | DEFSYM (QCnowait, ":nowait"); | |
7539 | DEFSYM (QCsentinel, ":sentinel"); | |
7540 | DEFSYM (QClog, ":log"); | |
7541 | DEFSYM (QCnoquery, ":noquery"); | |
7542 | DEFSYM (QCstop, ":stop"); | |
7543 | DEFSYM (QCoptions, ":options"); | |
7544 | DEFSYM (QCplist, ":plist"); | |
7545 | ||
7546 | DEFSYM (Qlast_nonmenu_event, "last-nonmenu-event"); | |
934e2a68 | 7547 | |
f388c88a EZ |
7548 | staticpro (&Vprocess_alist); |
7549 | #ifdef SIGCHLD | |
7550 | staticpro (&deleted_pid_list); | |
7551 | #endif | |
934e2a68 | 7552 | |
f388c88a | 7553 | #endif /* subprocesses */ |
6720a7fb | 7554 | |
cd3520a4 JB |
7555 | DEFSYM (QCname, ":name"); |
7556 | DEFSYM (QCtype, ":type"); | |
7557 | ||
7558 | DEFSYM (Qeuid, "euid"); | |
7559 | DEFSYM (Qegid, "egid"); | |
7560 | DEFSYM (Quser, "user"); | |
7561 | DEFSYM (Qgroup, "group"); | |
7562 | DEFSYM (Qcomm, "comm"); | |
7563 | DEFSYM (Qstate, "state"); | |
7564 | DEFSYM (Qppid, "ppid"); | |
7565 | DEFSYM (Qpgrp, "pgrp"); | |
7566 | DEFSYM (Qsess, "sess"); | |
7567 | DEFSYM (Qttname, "ttname"); | |
7568 | DEFSYM (Qtpgid, "tpgid"); | |
7569 | DEFSYM (Qminflt, "minflt"); | |
7570 | DEFSYM (Qmajflt, "majflt"); | |
7571 | DEFSYM (Qcminflt, "cminflt"); | |
7572 | DEFSYM (Qcmajflt, "cmajflt"); | |
7573 | DEFSYM (Qutime, "utime"); | |
7574 | DEFSYM (Qstime, "stime"); | |
7575 | DEFSYM (Qtime, "time"); | |
7576 | DEFSYM (Qcutime, "cutime"); | |
7577 | DEFSYM (Qcstime, "cstime"); | |
7578 | DEFSYM (Qctime, "ctime"); | |
7579 | DEFSYM (Qpri, "pri"); | |
7580 | DEFSYM (Qnice, "nice"); | |
7581 | DEFSYM (Qthcount, "thcount"); | |
7582 | DEFSYM (Qstart, "start"); | |
7583 | DEFSYM (Qvsize, "vsize"); | |
7584 | DEFSYM (Qrss, "rss"); | |
7585 | DEFSYM (Qetime, "etime"); | |
7586 | DEFSYM (Qpcpu, "pcpu"); | |
7587 | DEFSYM (Qpmem, "pmem"); | |
7588 | DEFSYM (Qargs, "args"); | |
9057ff80 | 7589 | |
29208e82 | 7590 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
fb7ada5f | 7591 | doc: /* Non-nil means delete processes immediately when they exit. |
f388c88a EZ |
7592 | A value of nil means don't delete them until `list-processes' is run. */); |
7593 | ||
7594 | delete_exited_processes = 1; | |
7595 | ||
462aa963 | 7596 | #ifdef subprocesses |
29208e82 | 7597 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7598 | doc: /* Control type of device used to communicate with subprocesses. |
7599 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7600 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7601 | then a pipe is used in any case. | |
7602 | The value takes effect when `start-process' is called. */); | |
7603 | Vprocess_connection_type = Qt; | |
7604 | ||
7605 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7606 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7607 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7608 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7609 | is read in very small blocks, potentially resulting in very poor performance. | |
7610 | This behavior can be remedied to some extent by setting this variable to a | |
7611 | non-nil value, as it will automatically delay reading from such processes, to | |
7612 | allow them to produce more output before Emacs tries to read it. | |
7613 | If the value is t, the delay is reset after each write to the process; any other | |
7614 | non-nil value means that the delay is not reset on write. | |
7615 | The variable takes effect when `start-process' is called. */); | |
7616 | Vprocess_adaptive_read_buffering = Qt; | |
7617 | #endif | |
7618 | ||
7619 | defsubr (&Sprocessp); | |
7620 | defsubr (&Sget_process); | |
7621 | defsubr (&Sdelete_process); | |
7622 | defsubr (&Sprocess_status); | |
7623 | defsubr (&Sprocess_exit_status); | |
7624 | defsubr (&Sprocess_id); | |
7625 | defsubr (&Sprocess_name); | |
7626 | defsubr (&Sprocess_tty_name); | |
7627 | defsubr (&Sprocess_command); | |
7628 | defsubr (&Sset_process_buffer); | |
7629 | defsubr (&Sprocess_buffer); | |
7630 | defsubr (&Sprocess_mark); | |
7631 | defsubr (&Sset_process_filter); | |
7632 | defsubr (&Sprocess_filter); | |
7633 | defsubr (&Sset_process_sentinel); | |
7634 | defsubr (&Sprocess_sentinel); | |
7635 | defsubr (&Sset_process_window_size); | |
7636 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7637 | defsubr (&Sset_process_query_on_exit_flag); | |
7638 | defsubr (&Sprocess_query_on_exit_flag); | |
7639 | defsubr (&Sprocess_contact); | |
7640 | defsubr (&Sprocess_plist); | |
7641 | defsubr (&Sset_process_plist); | |
f388c88a EZ |
7642 | defsubr (&Sprocess_list); |
7643 | defsubr (&Sstart_process); | |
f388c88a EZ |
7644 | defsubr (&Sserial_process_configure); |
7645 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7646 | defsubr (&Sset_network_process_option); |
7647 | defsubr (&Smake_network_process); | |
7648 | defsubr (&Sformat_network_address); | |
5e617bc2 | 7649 | #if defined (HAVE_NET_IF_H) |
f388c88a EZ |
7650 | #ifdef SIOCGIFCONF |
7651 | defsubr (&Snetwork_interface_list); | |
7652 | #endif | |
5e617bc2 | 7653 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
f388c88a EZ |
7654 | defsubr (&Snetwork_interface_info); |
7655 | #endif | |
5e617bc2 | 7656 | #endif /* defined (HAVE_NET_IF_H) */ |
f388c88a EZ |
7657 | #ifdef DATAGRAM_SOCKETS |
7658 | defsubr (&Sprocess_datagram_address); | |
7659 | defsubr (&Sset_process_datagram_address); | |
7660 | #endif | |
7661 | defsubr (&Saccept_process_output); | |
7662 | defsubr (&Sprocess_send_region); | |
7663 | defsubr (&Sprocess_send_string); | |
7664 | defsubr (&Sinterrupt_process); | |
7665 | defsubr (&Skill_process); | |
7666 | defsubr (&Squit_process); | |
7667 | defsubr (&Sstop_process); | |
7668 | defsubr (&Scontinue_process); | |
7669 | defsubr (&Sprocess_running_child_p); | |
7670 | defsubr (&Sprocess_send_eof); | |
7671 | defsubr (&Ssignal_process); | |
7672 | defsubr (&Swaiting_for_user_input_p); | |
7673 | defsubr (&Sprocess_type); | |
7674 | defsubr (&Sset_process_coding_system); | |
7675 | defsubr (&Sprocess_coding_system); | |
7676 | defsubr (&Sset_process_filter_multibyte); | |
7677 | defsubr (&Sprocess_filter_multibyte_p); | |
7678 | ||
7679 | #endif /* subprocesses */ | |
7680 | ||
6720a7fb | 7681 | defsubr (&Sget_buffer_process); |
52a1b894 | 7682 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7683 | defsubr (&Slist_system_processes); |
a20878b6 | 7684 | defsubr (&Sprocess_attributes); |
6720a7fb | 7685 | } |