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 | ||
68c45bf0 | 26 | #include <signal.h> |
d0d6b7c5 JB |
27 | #include <stdio.h> |
28 | #include <errno.h> | |
29 | #include <setjmp.h> | |
6c60eb9f | 30 | #include <sys/types.h> /* Some typedefs are used in sys/file.h. */ |
d0d6b7c5 JB |
31 | #include <sys/file.h> |
32 | #include <sys/stat.h> | |
d7306fe6 | 33 | #include <setjmp.h> |
934e2a68 | 34 | |
93b4f699 | 35 | #include <unistd.h> |
e98d950b | 36 | #include <fcntl.h> |
e98d950b | 37 | |
0898ca10 JB |
38 | #include "lisp.h" |
39 | ||
f388c88a EZ |
40 | /* Only MS-DOS does not define `subprocesses'. */ |
41 | #ifdef subprocesses | |
42 | ||
d0d6b7c5 JB |
43 | #include <sys/socket.h> |
44 | #include <netdb.h> | |
45 | #include <netinet/in.h> | |
46 | #include <arpa/inet.h> | |
e690ca94 KS |
47 | |
48 | /* Are local (unix) sockets supported? */ | |
4624371d | 49 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
50 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
51 | #define AF_LOCAL AF_UNIX | |
52 | #endif | |
53 | #ifdef AF_LOCAL | |
54 | #define HAVE_LOCAL_SOCKETS | |
55 | #include <sys/un.h> | |
56 | #endif | |
57 | #endif | |
d0d6b7c5 | 58 | |
d0d6b7c5 | 59 | #include <sys/ioctl.h> |
5e617bc2 | 60 | #if defined (HAVE_NET_IF_H) |
32bc6709 DN |
61 | #include <net/if.h> |
62 | #endif /* HAVE_NET_IF_H */ | |
d0d6b7c5 | 63 | |
5e617bc2 | 64 | #if defined (HAVE_IFADDRS_H) |
377538cb JD |
65 | /* Must be after net/if.h */ |
66 | #include <ifaddrs.h> | |
67 | ||
68 | /* We only use structs from this header when we use getifaddrs. */ | |
5e617bc2 | 69 | #if defined (HAVE_NET_IF_DL_H) |
377538cb JD |
70 | #include <net/if_dl.h> |
71 | #endif | |
72 | ||
73 | #endif | |
74 | ||
d0d6b7c5 JB |
75 | #ifdef NEED_BSDTTY |
76 | #include <bsdtty.h> | |
77 | #endif | |
78 | ||
08116b48 CY |
79 | #ifdef HAVE_RES_INIT |
80 | #include <netinet/in.h> | |
81 | #include <arpa/nameser.h> | |
82 | #include <resolv.h> | |
83 | #endif | |
84 | ||
3d608a86 J |
85 | #ifdef HAVE_UTIL_H |
86 | #include <util.h> | |
87 | #endif | |
88 | ||
9bf58201 DN |
89 | #ifdef HAVE_PTY_H |
90 | #include <pty.h> | |
91 | #endif | |
92 | ||
f388c88a EZ |
93 | #endif /* subprocesses */ |
94 | ||
d0d6b7c5 | 95 | #include "systime.h" |
36ebaafa | 96 | #include "systty.h" |
d0d6b7c5 | 97 | |
d0d6b7c5 | 98 | #include "window.h" |
5bbf78c1 | 99 | #include "character.h" |
e5560ff7 | 100 | #include "buffer.h" |
0fa1789e | 101 | #include "coding.h" |
d0d6b7c5 | 102 | #include "process.h" |
428a555e | 103 | #include "frame.h" |
d0d6b7c5 JB |
104 | #include "termhooks.h" |
105 | #include "termopts.h" | |
106 | #include "commands.h" | |
3ec68006 | 107 | #include "keyboard.h" |
ececcbec | 108 | #include "blockinput.h" |
dfcf069d | 109 | #include "dispextern.h" |
e0016554 | 110 | #include "composite.h" |
30904ab7 | 111 | #include "atimer.h" |
f388c88a EZ |
112 | #include "sysselect.h" |
113 | #include "syssignal.h" | |
114 | #include "syswait.h" | |
8af55556 TZ |
115 | #ifdef HAVE_GNUTLS |
116 | #include "gnutls.h" | |
117 | #endif | |
d0d6b7c5 | 118 | |
17a2cbbd DC |
119 | #ifdef HAVE_WINDOW_SYSTEM |
120 | #include TERM_HEADER | |
121 | #endif /* HAVE_WINDOW_SYSTEM */ | |
122 | ||
0949d2b6 | 123 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 | 124 | #include "xgselect.h" |
0949d2b6 | 125 | #endif |
57507bf8 | 126 | |
20ef56db PE |
127 | #ifndef WNOHANG |
128 | # undef waitpid | |
129 | # define waitpid(pid, status, options) wait (status) | |
130 | #endif | |
131 | #ifndef WUNTRACED | |
132 | # define WUNTRACED 0 | |
133 | #endif | |
134 | ||
b8df54ff PE |
135 | /* Work around GCC 4.7.0 bug with strict overflow checking; see |
136 | <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>. | |
137 | These lines can be removed once the GCC bug is fixed. */ | |
138 | #if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__ | |
139 | # pragma GCC diagnostic ignored "-Wstrict-overflow" | |
140 | #endif | |
141 | ||
fdb183d6 DN |
142 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
143 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
144 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
145 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
146 | Lisp_Object QCname, QCtype; | |
147 | \f | |
148 | /* Non-zero if keyboard input is on hold, zero otherwise. */ | |
149 | ||
150 | static int kbd_is_on_hold; | |
151 | ||
fdb183d6 DN |
152 | /* Nonzero means don't run process sentinels. This is used |
153 | when exiting. */ | |
154 | int inhibit_sentinels; | |
155 | ||
f388c88a EZ |
156 | #ifdef subprocesses |
157 | ||
dd2281ae | 158 | Lisp_Object Qprocessp; |
955cbe7b PE |
159 | static Lisp_Object Qrun, Qstop, Qsignal; |
160 | static Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; | |
161 | Lisp_Object Qlocal; | |
162 | static Lisp_Object Qipv4, Qdatagram, Qseqpacket; | |
163 | static Lisp_Object Qreal, Qnetwork, Qserial; | |
e1652a86 | 164 | #ifdef AF_INET6 |
955cbe7b | 165 | static Lisp_Object Qipv6; |
e1652a86 | 166 | #endif |
955cbe7b PE |
167 | static Lisp_Object QCport, QCprocess; |
168 | Lisp_Object QCspeed; | |
d888760c GM |
169 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; |
170 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
955cbe7b PE |
171 | static Lisp_Object QCbuffer, QChost, QCservice; |
172 | static Lisp_Object QClocal, QCremote, QCcoding; | |
173 | static Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; | |
174 | static Lisp_Object QCsentinel, QClog, QCoptions, QCplist; | |
175 | static Lisp_Object Qlast_nonmenu_event; | |
e0f712ba | 176 | |
4d2b044c DA |
177 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
178 | #define NETCONN1_P(p) (EQ (p->type, Qnetwork)) | |
179 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
180 | #define SERIALCONN1_P(p) (EQ (p->type, Qserial)) | |
d0d6b7c5 | 181 | |
5f0929a7 RS |
182 | #ifndef HAVE_H_ERRNO |
183 | extern int h_errno; | |
184 | #endif | |
185 | ||
d0d6b7c5 | 186 | /* Number of events of change of status of a process. */ |
e4d81efc | 187 | static EMACS_INT process_tick; |
d0d6b7c5 | 188 | /* Number of events for which the user or sentinel has been notified. */ |
e4d81efc | 189 | static EMACS_INT update_tick; |
d0d6b7c5 | 190 | |
dd2a17ab KS |
191 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
192 | ||
82d6e50b | 193 | /* Only W32 has this, it really means that select can't take write mask. */ |
dd2a17ab KS |
194 | #ifdef BROKEN_NON_BLOCKING_CONNECT |
195 | #undef NON_BLOCKING_CONNECT | |
82d6e50b | 196 | #define SELECT_CANT_DO_WRITE_MASK |
dd2a17ab KS |
197 | #else |
198 | #ifndef NON_BLOCKING_CONNECT | |
dd2a17ab KS |
199 | #ifdef HAVE_SELECT |
200 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
201 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
202 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
203 | #define NON_BLOCKING_CONNECT | |
204 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
205 | #endif /* O_NONBLOCK || O_NDELAY */ | |
206 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
207 | #endif /* HAVE_SELECT */ | |
dd2a17ab KS |
208 | #endif /* NON_BLOCKING_CONNECT */ |
209 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
210 | ||
e690ca94 KS |
211 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
212 | this system. We need to read full packets, so we need a | |
213 | "non-destructive" select. So we require either native select, | |
214 | or emulation of select using FIONREAD. */ | |
215 | ||
e690ca94 KS |
216 | #ifdef BROKEN_DATAGRAM_SOCKETS |
217 | #undef DATAGRAM_SOCKETS | |
218 | #else | |
219 | #ifndef DATAGRAM_SOCKETS | |
e690ca94 KS |
220 | #if defined (HAVE_SELECT) || defined (FIONREAD) |
221 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
222 | #define DATAGRAM_SOCKETS | |
223 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
224 | #endif /* HAVE_SELECT || FIONREAD */ | |
e690ca94 KS |
225 | #endif /* DATAGRAM_SOCKETS */ |
226 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
227 | ||
f00c449b SM |
228 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
229 | # define HAVE_SEQPACKET | |
230 | #endif | |
231 | ||
6b61353c | 232 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
6b61353c KH |
233 | #define ADAPTIVE_READ_BUFFERING |
234 | #endif | |
6b61353c KH |
235 | |
236 | #ifdef ADAPTIVE_READ_BUFFERING | |
d35af63c | 237 | #define READ_OUTPUT_DELAY_INCREMENT (EMACS_TIME_RESOLUTION / 100) |
6b61353c KH |
238 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) |
239 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
240 | ||
db853b7a KS |
241 | /* Number of processes which have a non-zero read_output_delay, |
242 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
243 | |
244 | static int process_output_delay_count; | |
245 | ||
db853b7a | 246 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
247 | |
248 | static int process_output_skip; | |
249 | ||
6b61353c KH |
250 | #else |
251 | #define process_output_delay_count 0 | |
252 | #endif | |
253 | ||
40ccffa6 | 254 | static void create_process (Lisp_Object, char **, Lisp_Object); |
006c5daa | 255 | #ifdef SIGIO |
f57e2426 | 256 | static int keyboard_bit_set (SELECT_TYPE *); |
006c5daa | 257 | #endif |
f57e2426 J |
258 | static void deactivate_process (Lisp_Object); |
259 | static void status_notify (struct Lisp_Process *); | |
260 | static int read_process_output (Lisp_Object, int); | |
261 | static void create_pty (Lisp_Object); | |
41d03b9a | 262 | |
583dcae4 | 263 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 264 | to detect C-g. It isn't actually used when doing interrupt input. */ |
5e617bc2 | 265 | #if defined (HAVE_WINDOW_SYSTEM) && !defined (USE_ASYNC_EVENTS) |
44ade2e9 RS |
266 | #define POLL_FOR_INPUT |
267 | #endif | |
268 | ||
d3da34e0 JB |
269 | static Lisp_Object get_process (register Lisp_Object name); |
270 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 271 | |
f388c88a EZ |
272 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
273 | ||
274 | static SELECT_TYPE input_wait_mask; | |
275 | ||
994d9841 | 276 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
277 | |
278 | static SELECT_TYPE non_keyboard_wait_mask; | |
279 | ||
994d9841 | 280 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
281 | |
282 | static SELECT_TYPE non_process_wait_mask; | |
283 | ||
3fad2ad2 | 284 | /* Mask for selecting for write. */ |
994d9841 | 285 | |
3fad2ad2 | 286 | static SELECT_TYPE write_mask; |
994d9841 | 287 | |
bad49fc7 | 288 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
289 | /* Mask of bits indicating the descriptors that we wait for connect to |
290 | complete on. Once they complete, they are removed from this mask | |
291 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
292 | ||
293 | static SELECT_TYPE connect_wait_mask; | |
294 | ||
295 | /* Number of bits set in connect_wait_mask. */ | |
296 | static int num_pending_connects; | |
f388c88a | 297 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 298 | |
7d0e672e RS |
299 | /* The largest descriptor currently in use for a process object. */ |
300 | static int max_process_desc; | |
301 | ||
3fad2ad2 J |
302 | /* The largest descriptor currently in use for input. */ |
303 | static int max_input_desc; | |
994d9841 | 304 | |
d0d6b7c5 | 305 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
40ccffa6 | 306 | static Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
307 | |
308 | /* Alist of elements (NAME . PROCESS) */ | |
40ccffa6 | 309 | static Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
310 | |
311 | /* Buffered-ahead input char from process, indexed by channel. | |
312 | -1 means empty (no char is buffered). | |
313 | Used on sys V where the only way to tell if there is any | |
314 | output from the process is to read at least one char. | |
315 | Always -1 on systems that support FIONREAD. */ | |
316 | ||
40ccffa6 | 317 | static int proc_buffered_char[MAXDESC]; |
dd2281ae | 318 | |
0fa1789e | 319 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
320 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
321 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 322 | |
e690ca94 KS |
323 | #ifdef DATAGRAM_SOCKETS |
324 | /* Table of `partner address' for datagram sockets. */ | |
40ccffa6 | 325 | static struct sockaddr_and_len { |
e690ca94 KS |
326 | struct sockaddr *sa; |
327 | int len; | |
328 | } datagram_address[MAXDESC]; | |
329 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 330 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
331 | #else |
332 | #define DATAGRAM_CHAN_P(chan) (0) | |
333 | #define DATAGRAM_CONN_P(proc) (0) | |
334 | #endif | |
335 | ||
93b4f699 RS |
336 | /* Maximum number of bytes to send to a pty without an eof. */ |
337 | static int pty_max_bytes; | |
3b9a3dfa | 338 | |
6a09a33b PE |
339 | /* These setters are used only in this file, so they can be private. */ |
340 | static inline void | |
341 | pset_buffer (struct Lisp_Process *p, Lisp_Object val) | |
342 | { | |
343 | p->buffer = val; | |
344 | } | |
345 | static inline void | |
346 | pset_command (struct Lisp_Process *p, Lisp_Object val) | |
347 | { | |
348 | p->command = val; | |
349 | } | |
350 | static inline void | |
351 | pset_decode_coding_system (struct Lisp_Process *p, Lisp_Object val) | |
352 | { | |
353 | p->decode_coding_system = val; | |
354 | } | |
355 | static inline void | |
356 | pset_decoding_buf (struct Lisp_Process *p, Lisp_Object val) | |
357 | { | |
358 | p->decoding_buf = val; | |
359 | } | |
360 | static inline void | |
361 | pset_encode_coding_system (struct Lisp_Process *p, Lisp_Object val) | |
362 | { | |
363 | p->encode_coding_system = val; | |
364 | } | |
365 | static inline void | |
366 | pset_encoding_buf (struct Lisp_Process *p, Lisp_Object val) | |
367 | { | |
368 | p->encoding_buf = val; | |
369 | } | |
370 | static inline void | |
371 | pset_filter (struct Lisp_Process *p, Lisp_Object val) | |
372 | { | |
373 | p->filter = val; | |
374 | } | |
375 | static inline void | |
376 | pset_log (struct Lisp_Process *p, Lisp_Object val) | |
377 | { | |
378 | p->log = val; | |
379 | } | |
380 | static inline void | |
381 | pset_mark (struct Lisp_Process *p, Lisp_Object val) | |
382 | { | |
383 | p->mark = val; | |
384 | } | |
385 | static inline void | |
386 | pset_name (struct Lisp_Process *p, Lisp_Object val) | |
387 | { | |
388 | p->name = val; | |
389 | } | |
390 | static inline void | |
391 | pset_plist (struct Lisp_Process *p, Lisp_Object val) | |
392 | { | |
393 | p->plist = val; | |
394 | } | |
395 | static inline void | |
396 | pset_sentinel (struct Lisp_Process *p, Lisp_Object val) | |
397 | { | |
398 | p->sentinel = val; | |
399 | } | |
400 | static inline void | |
401 | pset_status (struct Lisp_Process *p, Lisp_Object val) | |
402 | { | |
403 | p->status = val; | |
404 | } | |
405 | static inline void | |
406 | pset_tty_name (struct Lisp_Process *p, Lisp_Object val) | |
407 | { | |
408 | p->tty_name = val; | |
409 | } | |
410 | static inline void | |
411 | pset_type (struct Lisp_Process *p, Lisp_Object val) | |
412 | { | |
413 | p->type = val; | |
414 | } | |
415 | static inline void | |
416 | pset_write_queue (struct Lisp_Process *p, Lisp_Object val) | |
417 | { | |
418 | p->write_queue = val; | |
419 | } | |
420 | ||
d0d6b7c5 | 421 | \f |
3fad2ad2 | 422 | |
40ccffa6 | 423 | static struct fd_callback_data |
3fad2ad2 J |
424 | { |
425 | fd_callback func; | |
426 | void *data; | |
427 | #define FOR_READ 1 | |
428 | #define FOR_WRITE 2 | |
429 | int condition; /* mask of the defines above. */ | |
430 | } fd_callback_info[MAXDESC]; | |
431 | ||
432 | ||
433 | /* Add a file descriptor FD to be monitored for when read is possible. | |
434 | When read is possible, call FUNC with argument DATA. */ | |
435 | ||
436 | void | |
437 | add_read_fd (int fd, fd_callback func, void *data) | |
438 | { | |
a54e2c05 | 439 | eassert (fd < MAXDESC); |
3fad2ad2 J |
440 | add_keyboard_wait_descriptor (fd); |
441 | ||
442 | fd_callback_info[fd].func = func; | |
443 | fd_callback_info[fd].data = data; | |
444 | fd_callback_info[fd].condition |= FOR_READ; | |
445 | } | |
446 | ||
447 | /* Stop monitoring file descriptor FD for when read is possible. */ | |
448 | ||
449 | void | |
450 | delete_read_fd (int fd) | |
451 | { | |
a54e2c05 | 452 | eassert (fd < MAXDESC); |
3fad2ad2 J |
453 | delete_keyboard_wait_descriptor (fd); |
454 | ||
455 | fd_callback_info[fd].condition &= ~FOR_READ; | |
456 | if (fd_callback_info[fd].condition == 0) | |
457 | { | |
458 | fd_callback_info[fd].func = 0; | |
459 | fd_callback_info[fd].data = 0; | |
460 | } | |
461 | } | |
462 | ||
463 | /* Add a file descriptor FD to be monitored for when write is possible. | |
464 | When write is possible, call FUNC with argument DATA. */ | |
465 | ||
466 | void | |
467 | add_write_fd (int fd, fd_callback func, void *data) | |
468 | { | |
a54e2c05 | 469 | eassert (fd < MAXDESC); |
3fad2ad2 J |
470 | FD_SET (fd, &write_mask); |
471 | if (fd > max_input_desc) | |
472 | max_input_desc = fd; | |
473 | ||
474 | fd_callback_info[fd].func = func; | |
475 | fd_callback_info[fd].data = data; | |
476 | fd_callback_info[fd].condition |= FOR_WRITE; | |
477 | } | |
478 | ||
479 | /* Stop monitoring file descriptor FD for when write is possible. */ | |
480 | ||
481 | void | |
482 | delete_write_fd (int fd) | |
483 | { | |
484 | int lim = max_input_desc; | |
485 | ||
a54e2c05 | 486 | eassert (fd < MAXDESC); |
3fad2ad2 J |
487 | FD_CLR (fd, &write_mask); |
488 | fd_callback_info[fd].condition &= ~FOR_WRITE; | |
489 | if (fd_callback_info[fd].condition == 0) | |
490 | { | |
491 | fd_callback_info[fd].func = 0; | |
492 | fd_callback_info[fd].data = 0; | |
493 | ||
494 | if (fd == max_input_desc) | |
495 | for (fd = lim; fd >= 0; fd--) | |
496 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) | |
497 | { | |
498 | max_input_desc = fd; | |
499 | break; | |
500 | } | |
51b59d79 | 501 | |
3fad2ad2 J |
502 | } |
503 | } | |
504 | ||
505 | \f | |
d0d6b7c5 JB |
506 | /* Compute the Lisp form of the process status, p->status, from |
507 | the numeric status that was returned by `wait'. */ | |
508 | ||
bba104c1 | 509 | static Lisp_Object status_convert (int); |
f9738840 | 510 | |
ff6daed3 | 511 | static void |
d3da34e0 | 512 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 513 | { |
6bfd98e7 | 514 | eassert (p->raw_status_new); |
6a09a33b | 515 | pset_status (p, status_convert (p->raw_status)); |
6bfd98e7 | 516 | p->raw_status_new = 0; |
d0d6b7c5 JB |
517 | } |
518 | ||
177c0ea7 | 519 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
520 | the list that we use internally. */ |
521 | ||
ff6daed3 | 522 | static Lisp_Object |
bba104c1 | 523 | status_convert (int w) |
d0d6b7c5 JB |
524 | { |
525 | if (WIFSTOPPED (w)) | |
526 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
527 | else if (WIFEXITED (w)) | |
13294f95 | 528 | return Fcons (Qexit, Fcons (make_number (WEXITSTATUS (w)), |
d0d6b7c5 JB |
529 | WCOREDUMP (w) ? Qt : Qnil)); |
530 | else if (WIFSIGNALED (w)) | |
531 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
532 | WCOREDUMP (w) ? Qt : Qnil)); | |
533 | else | |
534 | return Qrun; | |
535 | } | |
536 | ||
537 | /* Given a status-list, extract the three pieces of information | |
538 | and store them individually through the three pointers. */ | |
539 | ||
ff6daed3 | 540 | static void |
d3da34e0 | 541 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, int *coredump) |
d0d6b7c5 JB |
542 | { |
543 | Lisp_Object tem; | |
544 | ||
bcd69aea | 545 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
546 | { |
547 | *symbol = l; | |
548 | *code = 0; | |
549 | *coredump = 0; | |
550 | } | |
551 | else | |
552 | { | |
70949dac KR |
553 | *symbol = XCAR (l); |
554 | tem = XCDR (l); | |
555 | *code = XFASTINT (XCAR (tem)); | |
556 | tem = XCDR (tem); | |
d0d6b7c5 JB |
557 | *coredump = !NILP (tem); |
558 | } | |
559 | } | |
560 | ||
561 | /* Return a string describing a process status list. */ | |
562 | ||
116c423c | 563 | static Lisp_Object |
d3da34e0 | 564 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 565 | { |
4d2b044c | 566 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
567 | Lisp_Object symbol; |
568 | int code, coredump; | |
569 | Lisp_Object string, string2; | |
570 | ||
571 | decode_status (status, &symbol, &code, &coredump); | |
572 | ||
573 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
574 | { | |
68c45bf0 | 575 | char *signame; |
ca9c0567 | 576 | synchronize_system_messages_locale (); |
68c45bf0 | 577 | signame = strsignal (code); |
b97ad9ea | 578 | if (signame == 0) |
66bd43d1 KH |
579 | string = build_string ("unknown"); |
580 | else | |
581 | { | |
582 | int c1, c2; | |
583 | ||
d7ea76b4 | 584 | string = build_unibyte_string (signame); |
66bd43d1 KH |
585 | if (! NILP (Vlocale_coding_system)) |
586 | string = (code_convert_string_norecord | |
587 | (string, Vlocale_coding_system, 0)); | |
42a5b22f | 588 | c1 = STRING_CHAR (SDATA (string)); |
5da9919f | 589 | c2 = downcase (c1); |
66bd43d1 | 590 | if (c1 != c2) |
4735b74e | 591 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 592 | } |
d0d6b7c5 | 593 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
594 | return concat2 (string, string2); |
595 | } | |
596 | else if (EQ (symbol, Qexit)) | |
597 | { | |
116c423c KS |
598 | if (NETCONN1_P (p)) |
599 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
600 | if (code == 0) |
601 | return build_string ("finished\n"); | |
f2980264 | 602 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 603 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
604 | return concat3 (build_string ("exited abnormally with code "), |
605 | string, string2); | |
d0d6b7c5 | 606 | } |
dd2a17ab KS |
607 | else if (EQ (symbol, Qfailed)) |
608 | { | |
609 | string = Fnumber_to_string (make_number (code)); | |
610 | string2 = build_string ("\n"); | |
e690ca94 KS |
611 | return concat3 (build_string ("failed with code "), |
612 | string, string2); | |
dd2a17ab | 613 | } |
d0d6b7c5 JB |
614 | else |
615 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
616 | } | |
617 | \f | |
618 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 619 | |
9bf58201 DN |
620 | /* The file name of the pty opened by allocate_pty. */ |
621 | static char pty_name[24]; | |
622 | ||
875e6b94 KH |
623 | /* Open an available pty, returning a file descriptor. |
624 | Return -1 on failure. | |
625 | The file name of the terminal corresponding to the pty | |
626 | is left in the variable pty_name. */ | |
627 | ||
ff6daed3 | 628 | static int |
d3da34e0 | 629 | allocate_pty (void) |
d0d6b7c5 | 630 | { |
d0d6b7c5 JB |
631 | int fd; |
632 | ||
633 | #ifdef PTY_ITERATION | |
634 | PTY_ITERATION | |
635 | #else | |
be02381c | 636 | register int c, i; |
d0d6b7c5 JB |
637 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) |
638 | for (i = 0; i < 16; i++) | |
639 | #endif | |
640 | { | |
641 | #ifdef PTY_NAME_SPRINTF | |
642 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
643 | #else |
644 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
645 | #endif /* no PTY_NAME_SPRINTF */ |
646 | ||
4d7c105e RS |
647 | #ifdef PTY_OPEN |
648 | PTY_OPEN; | |
649 | #else /* no PTY_OPEN */ | |
34967d0f | 650 | { |
34967d0f SM |
651 | { /* Some systems name their pseudoterminals so that there are gaps in |
652 | the usual sequence - for example, on HP9000/S700 systems, there | |
653 | are no pseudoterminals with names ending in 'f'. So we wait for | |
654 | three failures in a row before deciding that we've reached the | |
655 | end of the ptys. */ | |
656 | int failed_count = 0; | |
57048744 | 657 | struct stat stb; |
f3d9532b | 658 | |
34967d0f SM |
659 | if (stat (pty_name, &stb) < 0) |
660 | { | |
661 | failed_count++; | |
662 | if (failed_count >= 3) | |
663 | return -1; | |
664 | } | |
665 | else | |
666 | failed_count = 0; | |
32676c08 | 667 | } |
34967d0f SM |
668 | # ifdef O_NONBLOCK |
669 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
670 | # else | |
671 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
672 | # endif | |
34967d0f | 673 | } |
4d7c105e | 674 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
675 | |
676 | if (fd >= 0) | |
677 | { | |
678 | /* check to make certain that both sides are available | |
679 | this avoids a nasty yet stupid bug in rlogins */ | |
680 | #ifdef PTY_TTY_NAME_SPRINTF | |
681 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 682 | #else |
63136da6 | 683 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 684 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
685 | if (access (pty_name, 6) != 0) |
686 | { | |
68c45bf0 | 687 | emacs_close (fd); |
132d0475 | 688 | # ifndef __sgi |
d0d6b7c5 | 689 | continue; |
34967d0f | 690 | # else |
d0d6b7c5 | 691 | return -1; |
132d0475 | 692 | # endif /* __sgi */ |
d0d6b7c5 | 693 | } |
d0d6b7c5 JB |
694 | setup_pty (fd); |
695 | return fd; | |
696 | } | |
697 | } | |
698 | return -1; | |
699 | } | |
700 | #endif /* HAVE_PTYS */ | |
701 | \f | |
ff6daed3 | 702 | static Lisp_Object |
d3da34e0 | 703 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
704 | { |
705 | register Lisp_Object val, tem, name1; | |
706 | register struct Lisp_Process *p; | |
31c286f7 PE |
707 | char suffix[sizeof "<>" + INT_STRLEN_BOUND (printmax_t)]; |
708 | printmax_t i; | |
d0d6b7c5 | 709 | |
98423852 | 710 | p = allocate_process (); |
62efea5e DA |
711 | /* Initialize Lisp data. Note that allocate_process initializes all |
712 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
6a09a33b PE |
713 | pset_status (p, Qrun); |
714 | pset_mark (p, Fmake_marker ()); | |
d0d6b7c5 | 715 | |
62efea5e DA |
716 | /* Initialize non-Lisp data. Note that allocate_process zeroes out all |
717 | non-Lisp data, so do it only for slots which should not be zero. */ | |
718 | p->infd = -1; | |
719 | p->outfd = -1; | |
6b61353c | 720 | |
8af55556 TZ |
721 | #ifdef HAVE_GNUTLS |
722 | p->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
723 | #endif | |
724 | ||
d0d6b7c5 JB |
725 | /* If name is already in use, modify it until it is unused. */ |
726 | ||
727 | name1 = name; | |
728 | for (i = 1; ; i++) | |
729 | { | |
730 | tem = Fget_process (name1); | |
731 | if (NILP (tem)) break; | |
a8290ec3 | 732 | name1 = concat2 (name, make_formatted_string (suffix, "<%"pMd">", i)); |
d0d6b7c5 JB |
733 | } |
734 | name = name1; | |
6a09a33b | 735 | pset_name (p, name); |
23d6bb9c | 736 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
737 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
738 | return val; | |
739 | } | |
740 | ||
ff6daed3 | 741 | static void |
d3da34e0 | 742 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
743 | { |
744 | register Lisp_Object pair; | |
745 | ||
746 | pair = Frassq (proc, Vprocess_alist); | |
747 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
748 | |
749 | deactivate_process (proc); | |
750 | } | |
03f04413 | 751 | |
d0d6b7c5 JB |
752 | \f |
753 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 754 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 755 | (Lisp_Object object) |
d0d6b7c5 | 756 | { |
4ee3e309 | 757 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
758 | } |
759 | ||
760 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 761 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 762 | (register Lisp_Object name) |
d0d6b7c5 | 763 | { |
bcd69aea | 764 | if (PROCESSP (name)) |
d0d6b7c5 | 765 | return name; |
b7826503 | 766 | CHECK_STRING (name); |
d0d6b7c5 JB |
767 | return Fcdr (Fassoc (name, Vprocess_alist)); |
768 | } | |
769 | ||
ebb9e16f JB |
770 | /* This is how commands for the user decode process arguments. It |
771 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
772 | Buffers denote the first process in the buffer, and nil denotes the | |
773 | current buffer. */ | |
d0d6b7c5 | 774 | |
77b221b1 | 775 | static Lisp_Object |
d3da34e0 | 776 | get_process (register Lisp_Object name) |
d0d6b7c5 | 777 | { |
1619761d KH |
778 | register Lisp_Object proc, obj; |
779 | if (STRINGP (name)) | |
780 | { | |
781 | obj = Fget_process (name); | |
782 | if (NILP (obj)) | |
783 | obj = Fget_buffer (name); | |
784 | if (NILP (obj)) | |
d5db4077 | 785 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
786 | } |
787 | else if (NILP (name)) | |
788 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 789 | else |
1619761d KH |
790 | obj = name; |
791 | ||
792 | /* Now obj should be either a buffer object or a process object. | |
793 | */ | |
794 | if (BUFFERP (obj)) | |
d0d6b7c5 | 795 | { |
1619761d | 796 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 797 | if (NILP (proc)) |
4b4deea2 | 798 | error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj), name))); |
d0d6b7c5 | 799 | } |
d0d6b7c5 | 800 | else |
1619761d | 801 | { |
b7826503 | 802 | CHECK_PROCESS (obj); |
1619761d KH |
803 | proc = obj; |
804 | } | |
805 | return proc; | |
d0d6b7c5 JB |
806 | } |
807 | ||
a5cfdda8 KS |
808 | |
809 | #ifdef SIGCHLD | |
810 | /* Fdelete_process promises to immediately forget about the process, but in | |
811 | reality, Emacs needs to remember those processes until they have been | |
20ef56db | 812 | treated by the SIGCHLD handler; otherwise this handler would consider the |
a5cfdda8 KS |
813 | process as being synchronous and say that the synchronous process is |
814 | dead. */ | |
815 | static Lisp_Object deleted_pid_list; | |
816 | #endif | |
817 | ||
d0d6b7c5 | 818 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
819 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
820 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
821 | nil, indicating the current buffer's process. */) | |
5842a27b | 822 | (register Lisp_Object process) |
d0d6b7c5 | 823 | { |
ff6daed3 KS |
824 | register struct Lisp_Process *p; |
825 | ||
4ee3e309 | 826 | process = get_process (process); |
ff6daed3 KS |
827 | p = XPROCESS (process); |
828 | ||
6bfd98e7 | 829 | p->raw_status_new = 0; |
d888760c | 830 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 831 | { |
6a09a33b | 832 | pset_status (p, Fcons (Qexit, Fcons (make_number (0), Qnil))); |
60f0fb11 | 833 | p->tick = ++process_tick; |
ff6daed3 | 834 | status_notify (p); |
e42bdf01 | 835 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 836 | } |
60f0fb11 | 837 | else if (p->infd >= 0) |
d0d6b7c5 | 838 | { |
a5cfdda8 KS |
839 | #ifdef SIGCHLD |
840 | Lisp_Object symbol; | |
d311d28c | 841 | pid_t pid = p->pid; |
a5cfdda8 KS |
842 | |
843 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 844 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
845 | /* GC treated elements set to nil. */ |
846 | Fdelq (Qnil, deleted_pid_list)); | |
847 | /* If the process has already signaled, remove it from the list. */ | |
848 | if (p->raw_status_new) | |
849 | update_status (p); | |
4d2b044c DA |
850 | symbol = p->status; |
851 | if (CONSP (p->status)) | |
852 | symbol = XCAR (p->status); | |
a5cfdda8 | 853 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) |
29ed4d51 CY |
854 | deleted_pid_list |
855 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
856 | else |
857 | #endif | |
858 | { | |
859 | Fkill_process (process, Qnil); | |
20ef56db PE |
860 | /* Do this now, since remove_process will make the |
861 | SIGCHLD handler do nothing. */ | |
6a09a33b | 862 | pset_status (p, Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil))); |
60f0fb11 | 863 | p->tick = ++process_tick; |
a5cfdda8 | 864 | status_notify (p); |
e42bdf01 | 865 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 866 | } |
d0d6b7c5 | 867 | } |
4ee3e309 | 868 | remove_process (process); |
d0d6b7c5 JB |
869 | return Qnil; |
870 | } | |
871 | \f | |
872 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
873 | doc: /* Return the status of PROCESS. |
874 | The returned value is one of the following symbols: | |
875 | run -- for a process that is running. | |
876 | stop -- for a process stopped but continuable. | |
877 | exit -- for a process that has exited. | |
878 | signal -- for a process that has got a fatal signal. | |
879 | open -- for a network stream connection that is open. | |
e690ca94 | 880 | listen -- for a network stream server that is listening. |
fdb82f93 | 881 | closed -- for a network stream connection that is closed. |
e4984112 KS |
882 | connect -- when waiting for a non-blocking connection to complete. |
883 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
884 | nil -- if arg is a process name and no such process exists. |
885 | PROCESS may be a process, a buffer, the name of a process, or | |
886 | nil, indicating the current buffer's process. */) | |
5842a27b | 887 | (register Lisp_Object process) |
d0d6b7c5 JB |
888 | { |
889 | register struct Lisp_Process *p; | |
890 | register Lisp_Object status; | |
343f4114 | 891 | |
4ee3e309 EN |
892 | if (STRINGP (process)) |
893 | process = Fget_process (process); | |
343f4114 | 894 | else |
4ee3e309 | 895 | process = get_process (process); |
343f4114 | 896 | |
4ee3e309 EN |
897 | if (NILP (process)) |
898 | return process; | |
343f4114 | 899 | |
4ee3e309 | 900 | p = XPROCESS (process); |
6bfd98e7 | 901 | if (p->raw_status_new) |
d0d6b7c5 | 902 | update_status (p); |
4d2b044c | 903 | status = p->status; |
bcd69aea | 904 | if (CONSP (status)) |
70949dac | 905 | status = XCAR (status); |
d888760c | 906 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 907 | { |
e690ca94 | 908 | if (EQ (status, Qexit)) |
d0d6b7c5 | 909 | status = Qclosed; |
4d2b044c | 910 | else if (EQ (p->command, Qt)) |
e690ca94 KS |
911 | status = Qstop; |
912 | else if (EQ (status, Qrun)) | |
913 | status = Qopen; | |
d0d6b7c5 JB |
914 | } |
915 | return status; | |
916 | } | |
917 | ||
918 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
919 | 1, 1, 0, | |
fdb82f93 PJ |
920 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
921 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 922 | (register Lisp_Object process) |
d0d6b7c5 | 923 | { |
b7826503 | 924 | CHECK_PROCESS (process); |
6bfd98e7 | 925 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 | 926 | update_status (XPROCESS (process)); |
4d2b044c DA |
927 | if (CONSP (XPROCESS (process)->status)) |
928 | return XCAR (XCDR (XPROCESS (process)->status)); | |
d0d6b7c5 JB |
929 | return make_number (0); |
930 | } | |
931 | ||
932 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 933 | doc: /* Return the process id of PROCESS. |
f3d9532b | 934 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 935 | For a network connection, this value is nil. */) |
5842a27b | 936 | (register Lisp_Object process) |
d0d6b7c5 | 937 | { |
d311d28c | 938 | pid_t pid; |
d30fe779 | 939 | |
b7826503 | 940 | CHECK_PROCESS (process); |
d30fe779 EZ |
941 | pid = XPROCESS (process)->pid; |
942 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
943 | } |
944 | ||
945 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
946 | doc: /* Return the name of PROCESS, as a string. |
947 | This is the name of the program invoked in PROCESS, | |
948 | possibly modified to make it unique among process names. */) | |
5842a27b | 949 | (register Lisp_Object process) |
d0d6b7c5 | 950 | { |
b7826503 | 951 | CHECK_PROCESS (process); |
4d2b044c | 952 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
953 | } |
954 | ||
955 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
956 | doc: /* Return the command that was executed to start PROCESS. |
957 | This is a list of strings, the first string being the program executed | |
958 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
959 | For a network or serial process, this is nil (process is running) or t |
960 | \(process is stopped). */) | |
5842a27b | 961 | (register Lisp_Object process) |
d0d6b7c5 | 962 | { |
b7826503 | 963 | CHECK_PROCESS (process); |
4d2b044c | 964 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
965 | } |
966 | ||
3b9a3dfa | 967 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
968 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
969 | This is the terminal that the process itself reads and writes on, | |
970 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 971 | (register Lisp_Object process) |
3b9a3dfa | 972 | { |
b7826503 | 973 | CHECK_PROCESS (process); |
4d2b044c | 974 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
975 | } |
976 | ||
d0d6b7c5 | 977 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 | 978 | 2, 2, 0, |
76147d94 DD |
979 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). |
980 | Return BUFFER. */) | |
5842a27b | 981 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 982 | { |
e690ca94 KS |
983 | struct Lisp_Process *p; |
984 | ||
b7826503 | 985 | CHECK_PROCESS (process); |
d0d6b7c5 | 986 | if (!NILP (buffer)) |
b7826503 | 987 | CHECK_BUFFER (buffer); |
e690ca94 | 988 | p = XPROCESS (process); |
6a09a33b | 989 | pset_buffer (p, buffer); |
d888760c | 990 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 991 | pset_childp (p, Fplist_put (p->childp, QCbuffer, buffer)); |
03f04413 | 992 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
993 | return buffer; |
994 | } | |
995 | ||
996 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
997 | 1, 1, 0, |
998 | doc: /* Return the buffer PROCESS is associated with. | |
999 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 1000 | (register Lisp_Object process) |
d0d6b7c5 | 1001 | { |
b7826503 | 1002 | CHECK_PROCESS (process); |
4d2b044c | 1003 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
1004 | } |
1005 | ||
1006 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
1007 | 1, 1, 0, |
1008 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 1009 | (register Lisp_Object process) |
d0d6b7c5 | 1010 | { |
b7826503 | 1011 | CHECK_PROCESS (process); |
4d2b044c | 1012 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
1013 | } |
1014 | ||
1015 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
1016 | 2, 2, 0, |
1017 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 1018 | A value of t means stop accepting output from the process. |
3452df9e KS |
1019 | |
1020 | When a process has a filter, its buffer is not used for output. | |
1021 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 1022 | passed to the filter. |
3452df9e | 1023 | |
fdb82f93 | 1024 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
1025 | The string argument is normally a multibyte string, except: |
1026 | - if the process' input coding system is no-conversion or raw-text, | |
1027 | it is a unibyte string (the non-converted input), or else | |
1028 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
1029 | string (the result of converting the decoded input multibyte | |
1030 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 1031 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 1032 | { |
471f86b9 | 1033 | struct Lisp_Process *p; |
177c0ea7 | 1034 | |
b7826503 | 1035 | CHECK_PROCESS (process); |
471f86b9 GM |
1036 | p = XPROCESS (process); |
1037 | ||
1038 | /* Don't signal an error if the process' input file descriptor | |
1039 | is closed. This could make debugging Lisp more difficult, | |
1040 | for example when doing something like | |
1041 | ||
1042 | (setq process (start-process ...)) | |
1043 | (debug) | |
1044 | (set-process-filter process ...) */ | |
177c0ea7 | 1045 | |
60f0fb11 | 1046 | if (p->infd >= 0) |
a69281ff | 1047 | { |
4d2b044c | 1048 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 1049 | { |
60f0fb11 SM |
1050 | FD_CLR (p->infd, &input_wait_mask); |
1051 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1052 | } |
4d2b044c | 1053 | else if (EQ (p->filter, Qt) |
d888760c | 1054 | /* Network or serial process not stopped: */ |
4d2b044c | 1055 | && !EQ (p->command, Qt)) |
471f86b9 | 1056 | { |
60f0fb11 SM |
1057 | FD_SET (p->infd, &input_wait_mask); |
1058 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1059 | } |
a69281ff | 1060 | } |
177c0ea7 | 1061 | |
6a09a33b | 1062 | pset_filter (p, filter); |
d888760c | 1063 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1064 | pset_childp (p, Fplist_put (p->childp, QCfilter, filter)); |
03f04413 | 1065 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1066 | return filter; |
1067 | } | |
1068 | ||
1069 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1070 | 1, 1, 0, |
1071 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1072 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 1073 | (register Lisp_Object process) |
d0d6b7c5 | 1074 | { |
b7826503 | 1075 | CHECK_PROCESS (process); |
4d2b044c | 1076 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1077 | } |
1078 | ||
1079 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1080 | 2, 2, 0, |
1081 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1082 | The sentinel is called as a function when the process changes state. | |
1083 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 1084 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1085 | { |
6b61353c KH |
1086 | struct Lisp_Process *p; |
1087 | ||
b7826503 | 1088 | CHECK_PROCESS (process); |
6b61353c KH |
1089 | p = XPROCESS (process); |
1090 | ||
6a09a33b | 1091 | pset_sentinel (p, sentinel); |
d888760c | 1092 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1093 | pset_childp (p, Fplist_put (p->childp, QCsentinel, sentinel)); |
d0d6b7c5 JB |
1094 | return sentinel; |
1095 | } | |
1096 | ||
1097 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1098 | 1, 1, 0, |
1099 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1100 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 1101 | (register Lisp_Object process) |
d0d6b7c5 | 1102 | { |
b7826503 | 1103 | CHECK_PROCESS (process); |
4d2b044c | 1104 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1105 | } |
1106 | ||
396df322 | 1107 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1108 | Sset_process_window_size, 3, 3, 0, |
1109 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1110 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1111 | { |
b7826503 | 1112 | CHECK_PROCESS (process); |
af5a5a98 AS |
1113 | CHECK_RANGED_INTEGER (height, 0, INT_MAX); |
1114 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); | |
177c0ea7 | 1115 | |
60f0fb11 SM |
1116 | if (XPROCESS (process)->infd < 0 |
1117 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1118 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1119 | return Qnil; |
1120 | else | |
1121 | return Qt; | |
1122 | } | |
1123 | ||
52a1b894 | 1124 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1125 | Fset_process_inherit_coding_system_flag, |
1126 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1127 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1128 | If the second argument FLAG is non-nil, then the variable | |
1129 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1130 | will be bound to the value of the coding system used to decode | |
1131 | the process output. | |
1132 | ||
1133 | This is useful when the coding system specified for the process buffer | |
1134 | leaves either the character code conversion or the end-of-line conversion | |
1135 | unspecified, or if the coding system used to decode the process output | |
1136 | is more appropriate for saving the process buffer. | |
1137 | ||
1138 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1139 | starting the process is an alternative way of setting the inherit flag | |
016a35df GM |
1140 | for the process which will run. |
1141 | ||
1142 | This function returns FLAG. */) | |
5842a27b | 1143 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1144 | { |
b7826503 | 1145 | CHECK_PROCESS (process); |
60f0fb11 | 1146 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1147 | return flag; |
1148 | } | |
1149 | ||
e690ca94 KS |
1150 | DEFUN ("set-process-query-on-exit-flag", |
1151 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1152 | 2, 2, 0, | |
1153 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1154 | If the second argument FLAG is non-nil, Emacs will query the user before |
016a35df GM |
1155 | exiting or killing a buffer if PROCESS is running. This function |
1156 | returns FLAG. */) | |
5842a27b | 1157 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1158 | { |
b7826503 | 1159 | CHECK_PROCESS (process); |
60f0fb11 | 1160 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1161 | return flag; |
d0d6b7c5 | 1162 | } |
312c9964 | 1163 | |
e690ca94 KS |
1164 | DEFUN ("process-query-on-exit-flag", |
1165 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1166 | 1, 1, 0, |
f3d9532b | 1167 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1168 | (register Lisp_Object process) |
de282a05 | 1169 | { |
b7826503 | 1170 | CHECK_PROCESS (process); |
60f0fb11 | 1171 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1172 | } |
1173 | ||
e690ca94 KS |
1174 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, |
1175 | 1, 2, 0, | |
1176 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1177 | For a network or serial connection, the value depends on the optional |
1178 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1179 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1180 | connection. If KEY is t, the complete contact information for the | |
1181 | connection is returned, else the specific value for the keyword KEY is | |
1182 | returned. See `make-network-process' or `make-serial-process' for a | |
1183 | list of keywords. */) | |
5842a27b | 1184 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1185 | { |
1186 | Lisp_Object contact; | |
1187 | ||
1188 | CHECK_PROCESS (process); | |
4d2b044c | 1189 | contact = XPROCESS (process)->childp; |
e690ca94 KS |
1190 | |
1191 | #ifdef DATAGRAM_SOCKETS | |
1192 | if (DATAGRAM_CONN_P (process) | |
1193 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1194 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1195 | Fprocess_datagram_address (process)); |
1196 | #endif | |
1197 | ||
d888760c | 1198 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1199 | return contact; |
d888760c | 1200 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1201 | return Fcons (Fplist_get (contact, QChost), |
1202 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1203 | if (NILP (key) && SERIALCONN_P (process)) |
1204 | return Fcons (Fplist_get (contact, QCport), | |
1205 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1206 | return Fplist_get (contact, key); |
de282a05 RS |
1207 | } |
1208 | ||
faa7db08 KS |
1209 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1210 | 1, 1, 0, | |
1211 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1212 | (register Lisp_Object process) |
365aee82 | 1213 | { |
ac4a7584 | 1214 | CHECK_PROCESS (process); |
4d2b044c | 1215 | return XPROCESS (process)->plist; |
ac4a7584 | 1216 | } |
365aee82 | 1217 | |
faa7db08 KS |
1218 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1219 | 2, 2, 0, | |
26a086c6 | 1220 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1221 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1222 | { |
365aee82 | 1223 | CHECK_PROCESS (process); |
faa7db08 | 1224 | CHECK_LIST (plist); |
365aee82 | 1225 | |
6a09a33b | 1226 | pset_plist (XPROCESS (process), plist); |
26a086c6 | 1227 | return plist; |
365aee82 KS |
1228 | } |
1229 | ||
312c9964 RS |
1230 | #if 0 /* Turned off because we don't currently record this info |
1231 | in the process. Perhaps add it. */ | |
1232 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1233 | doc: /* Return the connection type of PROCESS. |
1234 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1235 | a socket connection. */) | |
5842a27b | 1236 | (Lisp_Object process) |
312c9964 | 1237 | { |
4d2b044c | 1238 | return XPROCESS (process)->type; |
312c9964 RS |
1239 | } |
1240 | #endif | |
2a7bb882 | 1241 | |
d888760c GM |
1242 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1243 | doc: /* Return the connection type of PROCESS. | |
1244 | The value is either the symbol `real', `network', or `serial'. | |
1245 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1246 | nil, indicating the current buffer's process. */) | |
5842a27b | 1247 | (Lisp_Object process) |
d888760c GM |
1248 | { |
1249 | Lisp_Object proc; | |
1250 | proc = get_process (process); | |
4d2b044c | 1251 | return XPROCESS (proc)->type; |
d888760c | 1252 | } |
991234f0 | 1253 | |
991234f0 | 1254 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1255 | 1, 2, 0, |
991234f0 | 1256 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1257 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1258 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1259 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1260 | number in the string, even when present in ADDRESS. |
1261 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1262 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1263 | { |
991234f0 KS |
1264 | if (NILP (address)) |
1265 | return Qnil; | |
1266 | ||
1267 | if (STRINGP (address)) /* AF_LOCAL */ | |
1268 | return address; | |
1269 | ||
e1652a86 | 1270 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1271 | { |
1272 | register struct Lisp_Vector *p = XVECTOR (address); | |
d311d28c | 1273 | ptrdiff_t size = p->header.size; |
ded83665 | 1274 | Lisp_Object args[10]; |
0dccee41 | 1275 | int nargs, i; |
991234f0 | 1276 | |
eab3844f | 1277 | if (size == 4 || (size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1278 | { |
1279 | args[0] = build_string ("%d.%d.%d.%d"); | |
1280 | nargs = 4; | |
1281 | } | |
eab3844f | 1282 | else if (size == 5) |
0dccee41 KS |
1283 | { |
1284 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1285 | nargs = 5; | |
1286 | } | |
eab3844f | 1287 | else if (size == 8 || (size == 9 && !NILP (omit_port))) |
e1652a86 KS |
1288 | { |
1289 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1290 | nargs = 8; | |
1291 | } | |
eab3844f | 1292 | else if (size == 9) |
e1652a86 KS |
1293 | { |
1294 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1295 | nargs = 9; | |
1296 | } | |
0dccee41 | 1297 | else |
991234f0 KS |
1298 | return Qnil; |
1299 | ||
0dccee41 | 1300 | for (i = 0; i < nargs; i++) |
cbf23adb | 1301 | { |
d311d28c | 1302 | if (! RANGED_INTEGERP (0, p->contents[i], 65535)) |
cbf23adb JB |
1303 | return Qnil; |
1304 | ||
1305 | if (nargs <= 5 /* IPv4 */ | |
1306 | && i < 4 /* host, not port */ | |
d311d28c | 1307 | && XINT (p->contents[i]) > 255) |
cbf23adb JB |
1308 | return Qnil; |
1309 | ||
1310 | args[i+1] = p->contents[i]; | |
1311 | } | |
1312 | ||
0dccee41 | 1313 | return Fformat (nargs+1, args); |
991234f0 KS |
1314 | } |
1315 | ||
1316 | if (CONSP (address)) | |
1317 | { | |
1318 | Lisp_Object args[2]; | |
1319 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1320 | args[1] = Fcar (address); |
991234f0 | 1321 | return Fformat (2, args); |
991234f0 KS |
1322 | } |
1323 | ||
1324 | return Qnil; | |
1325 | } | |
d0d6b7c5 JB |
1326 | |
1327 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1328 | doc: /* Return a list of all processes. */) |
5842a27b | 1329 | (void) |
d0d6b7c5 JB |
1330 | { |
1331 | return Fmapcar (Qcdr, Vprocess_alist); | |
1332 | } | |
1333 | \f | |
b0310da4 JB |
1334 | /* Starting asynchronous inferior processes. */ |
1335 | ||
d3da34e0 | 1336 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1337 | |
d0d6b7c5 | 1338 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1339 | doc: /* Start a program in a subprocess. Return the process object for it. |
1340 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1341 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1342 | |
1343 | Process output (both standard output and standard error streams) goes | |
1344 | at end of BUFFER, unless you specify an output stream or filter | |
1345 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1346 | this process is not associated with any buffer. |
1347 | ||
6b8bc570 CY |
1348 | PROGRAM is the program file name. It is searched for in `exec-path' |
1349 | (which see). If nil, just associate a pty with the buffer. Remaining | |
1350 | arguments are strings to give program as arguments. | |
320aebc9 | 1351 | |
4b6c5eee EZ |
1352 | If you want to separate standard output from standard error, invoke |
1353 | the command through a shell and redirect one of them using the shell | |
1354 | syntax. | |
320aebc9 | 1355 | |
3ecdf100 | 1356 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
f66c7cf8 | 1357 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 | 1358 | { |
1e30af70 | 1359 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1360 | register unsigned char **new_argv; |
f66c7cf8 | 1361 | ptrdiff_t i; |
d311d28c | 1362 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1363 | |
1364 | buffer = args[1]; | |
1365 | if (!NILP (buffer)) | |
1366 | buffer = Fget_buffer_create (buffer); | |
1367 | ||
1e30af70 JB |
1368 | /* Make sure that the child will be able to chdir to the current |
1369 | buffer's current directory, or its unhandled equivalent. We | |
1370 | can't just have the child check for an error when it does the | |
1371 | chdir, since it's in a vfork. | |
1372 | ||
1373 | We have to GCPRO around this because Fexpand_file_name and | |
1374 | Funhandled_file_name_directory might call a file name handling | |
1375 | function. The argument list is protected by the caller, so all | |
1376 | we really have to worry about is buffer. */ | |
1377 | { | |
1378 | struct gcpro gcpro1, gcpro2; | |
1379 | ||
4b4deea2 | 1380 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1381 | |
1382 | GCPRO2 (buffer, current_dir); | |
1383 | ||
ca319910 SM |
1384 | current_dir = Funhandled_file_name_directory (current_dir); |
1385 | if (NILP (current_dir)) | |
1386 | /* If the file name handler says that current_dir is unreachable, use | |
1387 | a sensible default. */ | |
1388 | current_dir = build_string ("~/"); | |
1389 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1390 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1391 | report_file_error ("Setting current directory", | |
4b4deea2 | 1392 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1393 | |
1394 | UNGCPRO; | |
1395 | } | |
1396 | ||
d0d6b7c5 | 1397 | name = args[0]; |
b7826503 | 1398 | CHECK_STRING (name); |
d0d6b7c5 JB |
1399 | |
1400 | program = args[2]; | |
1401 | ||
850d0752 NR |
1402 | if (!NILP (program)) |
1403 | CHECK_STRING (program); | |
d0d6b7c5 | 1404 | |
d0d6b7c5 | 1405 | proc = make_process (name); |
b0310da4 JB |
1406 | /* If an error occurs and we can't start the process, we want to |
1407 | remove it from the process list. This means that each error | |
1408 | check in create_process doesn't need to call remove_process | |
1409 | itself; it's all taken care of here. */ | |
1410 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 | 1411 | |
6a09a33b PE |
1412 | pset_childp (XPROCESS (proc), Qt); |
1413 | pset_plist (XPROCESS (proc), Qnil); | |
1414 | pset_type (XPROCESS (proc), Qreal); | |
1415 | pset_buffer (XPROCESS (proc), buffer); | |
1416 | pset_sentinel (XPROCESS (proc), Qnil); | |
1417 | pset_filter (XPROCESS (proc), Qnil); | |
1418 | pset_command (XPROCESS (proc), Flist (nargs - 2, args + 2)); | |
d0d6b7c5 | 1419 | |
8af55556 TZ |
1420 | #ifdef HAVE_GNUTLS |
1421 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1422 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
6a09a33b | 1423 | pset_gnutls_cred_type (XPROCESS (proc), Qnil); |
8af55556 TZ |
1424 | #endif |
1425 | ||
6b61353c | 1426 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1427 | XPROCESS (proc)->adaptive_read_buffering |
1428 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1429 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1430 | #endif |
1431 | ||
7af71e17 | 1432 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1433 | if (BUFFERP (buffer)) |
4d2b044c | 1434 | set_marker_both (XPROCESS (proc)->mark, buffer, |
d8a2934e RS |
1435 | BUF_ZV (XBUFFER (buffer)), |
1436 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1437 | |
67918941 | 1438 | { |
d5d4ae71 KH |
1439 | /* Decide coding systems for communicating with the process. Here |
1440 | we don't setup the structure coding_system nor pay attention to | |
1441 | unibyte mode. They are done in create_process. */ | |
1442 | ||
67918941 RS |
1443 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1444 | Lisp_Object coding_systems = Qt; | |
1445 | Lisp_Object val, *args2; | |
a4a37e65 | 1446 | struct gcpro gcpro1, gcpro2; |
67918941 | 1447 | |
d5d4ae71 KH |
1448 | val = Vcoding_system_for_read; |
1449 | if (NILP (val)) | |
67918941 | 1450 | { |
38182d90 | 1451 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1452 | args2[0] = Qstart_process; |
1453 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1454 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1455 | if (!NILP (program)) |
1456 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1457 | UNGCPRO; |
1458 | if (CONSP (coding_systems)) | |
70949dac | 1459 | val = XCAR (coding_systems); |
67918941 | 1460 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1461 | val = XCAR (Vdefault_process_coding_system); |
67918941 | 1462 | } |
6a09a33b | 1463 | pset_decode_coding_system (XPROCESS (proc), val); |
67918941 | 1464 | |
d5d4ae71 KH |
1465 | val = Vcoding_system_for_write; |
1466 | if (NILP (val)) | |
67918941 RS |
1467 | { |
1468 | if (EQ (coding_systems, Qt)) | |
1469 | { | |
38182d90 | 1470 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1471 | args2[0] = Qstart_process; |
1472 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1473 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1474 | if (!NILP (program)) |
1475 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1476 | UNGCPRO; |
1477 | } | |
1478 | if (CONSP (coding_systems)) | |
70949dac | 1479 | val = XCDR (coding_systems); |
67918941 | 1480 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1481 | val = XCDR (Vdefault_process_coding_system); |
67918941 | 1482 | } |
6a09a33b | 1483 | pset_encode_coding_system (XPROCESS (proc), val); |
e1dbe924 | 1484 | /* Note: At this moment, the above coding system may leave |
fcaf8878 KH |
1485 | text-conversion or eol-conversion unspecified. They will be |
1486 | decided after we read output from the process and decode it by | |
1487 | some coding system, or just before we actually send a text to | |
1488 | the process. */ | |
67918941 | 1489 | } |
0fa1789e | 1490 | |
a4a37e65 | 1491 | |
6a09a33b | 1492 | pset_decoding_buf (XPROCESS (proc), empty_unibyte_string); |
850d0752 | 1493 | XPROCESS (proc)->decoding_carryover = 0; |
6a09a33b | 1494 | pset_encoding_buf (XPROCESS (proc), empty_unibyte_string); |
ed30cf85 | 1495 | |
850d0752 NR |
1496 | XPROCESS (proc)->inherit_coding_system_flag |
1497 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1498 | |
850d0752 NR |
1499 | if (!NILP (program)) |
1500 | { | |
1501 | /* If program file name is not absolute, search our path for it. | |
1502 | Put the name we will really use in TEM. */ | |
1503 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1504 | && !(SCHARS (program) > 1 | |
1505 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1506 | { | |
1507 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1508 | ||
1509 | tem = Qnil; | |
1510 | GCPRO4 (name, program, buffer, current_dir); | |
1511 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1512 | UNGCPRO; | |
1513 | if (NILP (tem)) | |
1514 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1515 | tem = Fexpand_file_name (tem, Qnil); | |
1516 | } | |
1517 | else | |
1518 | { | |
1519 | if (!NILP (Ffile_directory_p (program))) | |
1520 | error ("Specified program for new process is a directory"); | |
1521 | tem = program; | |
1522 | } | |
ed30cf85 | 1523 | |
850d0752 NR |
1524 | /* If program file name starts with /: for quoting a magic name, |
1525 | discard that. */ | |
1526 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1527 | && SREF (tem, 1) == ':') | |
1528 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1529 | |
77bf07e1 | 1530 | { |
fcaf8878 | 1531 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1532 | struct gcpro gcpro1; |
1533 | GCPRO1 (tem); | |
a4a37e65 | 1534 | |
850d0752 NR |
1535 | /* Encode the file name and put it in NEW_ARGV. |
1536 | That's where the child will use it to execute the program. */ | |
1537 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1538 | |
850d0752 NR |
1539 | /* Here we encode arguments by the coding system used for sending |
1540 | data to the process. We don't support using different coding | |
1541 | systems for encoding arguments and for encoding data sent to the | |
1542 | process. */ | |
77bf07e1 | 1543 | |
850d0752 NR |
1544 | for (i = 3; i < nargs; i++) |
1545 | { | |
1546 | tem = Fcons (args[i], tem); | |
1547 | CHECK_STRING (XCAR (tem)); | |
1548 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1549 | { |
1550 | if (NILP (arg_encoding)) | |
1551 | arg_encoding = (complement_process_encoding_system | |
4d2b044c | 1552 | (XPROCESS (proc)->encode_coding_system)); |
fcaf8878 KH |
1553 | XSETCAR (tem, |
1554 | code_convert_string_norecord | |
1555 | (XCAR (tem), arg_encoding, 1)); | |
1556 | } | |
850d0752 | 1557 | } |
a4a37e65 | 1558 | |
850d0752 NR |
1559 | UNGCPRO; |
1560 | } | |
0fa1789e | 1561 | |
850d0752 NR |
1562 | /* Now that everything is encoded we can collect the strings into |
1563 | NEW_ARGV. */ | |
38182d90 | 1564 | new_argv = alloca ((nargs - 1) * sizeof *new_argv); |
850d0752 | 1565 | new_argv[nargs - 2] = 0; |
52a1b894 | 1566 | |
c5101a77 | 1567 | for (i = nargs - 2; i-- != 0; ) |
850d0752 NR |
1568 | { |
1569 | new_argv[i] = SDATA (XCAR (tem)); | |
1570 | tem = XCDR (tem); | |
1571 | } | |
1572 | ||
1573 | create_process (proc, (char **) new_argv, current_dir); | |
1574 | } | |
1575 | else | |
1576 | create_pty (proc); | |
d0d6b7c5 | 1577 | |
b0310da4 | 1578 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1579 | } |
1580 | ||
b0310da4 | 1581 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1582 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1583 | an error and the process wasn't started successfully, so we should |
1584 | remove it from the process list. */ | |
1585 | static Lisp_Object | |
d3da34e0 | 1586 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1587 | { |
bcd69aea | 1588 | if (!PROCESSP (proc)) |
1088b922 | 1589 | emacs_abort (); |
b0310da4 | 1590 | |
2bf26180 GM |
1591 | /* Was PROC started successfully? |
1592 | -2 is used for a pty with no process, eg for gdb. */ | |
1593 | if (XPROCESS (proc)->pid <= 0 && XPROCESS (proc)->pid != -2) | |
b0310da4 JB |
1594 | remove_process (proc); |
1595 | ||
1596 | return Qnil; | |
1597 | } | |
1598 | ||
ff6daed3 | 1599 | static void |
d3da34e0 | 1600 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1601 | { |
30904ab7 | 1602 | /* Nothing to do. */ |
d0d6b7c5 JB |
1603 | } |
1604 | ||
30904ab7 | 1605 | |
40ccffa6 | 1606 | static void |
d3da34e0 | 1607 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1608 | { |
29ed4d51 CY |
1609 | int inchannel, outchannel; |
1610 | pid_t pid; | |
d0d6b7c5 | 1611 | int sv[2]; |
2c4df143 YM |
1612 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1613 | int wait_child_setup[2]; | |
1614 | #endif | |
0dc70c33 KH |
1615 | sigset_t procmask; |
1616 | sigset_t blocked; | |
1617 | struct sigaction sigint_action; | |
1618 | struct sigaction sigquit_action; | |
c0ad4ea5 | 1619 | struct sigaction sigpipe_action; |
0dc70c33 KH |
1620 | #ifdef AIX |
1621 | struct sigaction sighup_action; | |
1622 | #endif | |
ecd1f654 KH |
1623 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1624 | volatile int forkin, forkout; | |
1625 | volatile int pty_flag = 0; | |
d0d6b7c5 | 1626 | |
d0d6b7c5 JB |
1627 | inchannel = outchannel = -1; |
1628 | ||
1629 | #ifdef HAVE_PTYS | |
fe45da4e | 1630 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1631 | outchannel = inchannel = allocate_pty (); |
1632 | ||
d0d6b7c5 JB |
1633 | if (inchannel >= 0) |
1634 | { | |
2af70a0c RS |
1635 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1636 | /* On most USG systems it does not work to open the pty's tty here, | |
1637 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1638 | #ifdef O_NOCTTY |
1639 | /* Don't let this terminal become our controlling terminal | |
1640 | (in case we don't have one). */ | |
68c45bf0 | 1641 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1642 | #else |
68c45bf0 | 1643 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1644 | #endif |
1645 | if (forkin < 0) | |
1646 | report_file_error ("Opening pty", Qnil); | |
1647 | #else | |
1648 | forkin = forkout = -1; | |
2af70a0c | 1649 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1650 | pty_flag = 1; |
1651 | } | |
1652 | else | |
1653 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1654 | { |
fc14013c KH |
1655 | int tem; |
1656 | tem = pipe (sv); | |
1657 | if (tem < 0) | |
1658 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1659 | inchannel = sv[0]; |
1660 | forkout = sv[1]; | |
fc14013c KH |
1661 | tem = pipe (sv); |
1662 | if (tem < 0) | |
1663 | { | |
68c45bf0 PE |
1664 | emacs_close (inchannel); |
1665 | emacs_close (forkout); | |
fc14013c KH |
1666 | report_file_error ("Creating pipe", Qnil); |
1667 | } | |
d0d6b7c5 JB |
1668 | outchannel = sv[1]; |
1669 | forkin = sv[0]; | |
1670 | } | |
d0d6b7c5 | 1671 | |
2c4df143 YM |
1672 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1673 | { | |
1674 | int tem; | |
1675 | ||
1676 | tem = pipe (wait_child_setup); | |
1677 | if (tem < 0) | |
1678 | report_file_error ("Creating pipe", Qnil); | |
1679 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1680 | if (tem >= 0) | |
1681 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1682 | if (tem < 0) | |
1683 | { | |
1684 | emacs_close (wait_child_setup[0]); | |
1685 | emacs_close (wait_child_setup[1]); | |
1686 | report_file_error ("Setting file descriptor flags", Qnil); | |
1687 | } | |
1688 | } | |
1689 | #endif | |
1690 | ||
d0d6b7c5 JB |
1691 | #ifdef O_NONBLOCK |
1692 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1693 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1694 | #else |
1695 | #ifdef O_NDELAY | |
1696 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1697 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1698 | #endif |
1699 | #endif | |
1700 | ||
1701 | /* Record this as an active process, with its channels. | |
1702 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1703 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1704 | XPROCESS (process)->infd = inchannel; |
1705 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1706 | |
1707 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1708 | It was only used for getting the foreground tty process, so now | |
1709 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1710 | more portable (see USG_SUBTTY_WORKS above). */ | |
1711 | ||
60f0fb11 | 1712 | XPROCESS (process)->pty_flag = pty_flag; |
6a09a33b | 1713 | pset_status (XPROCESS (process), Qrun); |
d0d6b7c5 JB |
1714 | |
1715 | /* Delay interrupts until we have a chance to store | |
1716 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1717 | sigemptyset (&blocked); |
1718 | #ifdef SIGCHLD | |
1719 | sigaddset (&blocked, SIGCHLD); | |
1720 | #endif | |
351e611f | 1721 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1722 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1723 | this sets the parent's signal handlers as well as the child's. | |
1724 | So delay all interrupts whose handlers the child might munge, | |
1725 | and record the current handlers so they can be restored later. */ | |
1726 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1727 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
c0ad4ea5 | 1728 | sigaddset (&blocked, SIGPIPE); sigaction (SIGPIPE, 0, &sigpipe_action); |
0dc70c33 KH |
1729 | #ifdef AIX |
1730 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1731 | #endif | |
351e611f | 1732 | #endif /* HAVE_WORKING_VFORK */ |
123403e4 | 1733 | pthread_sigmask (SIG_BLOCK, &blocked, &procmask); |
d0d6b7c5 | 1734 | |
3081bf8d | 1735 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1736 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1737 | if (inchannel > max_process_desc) |
1738 | max_process_desc = inchannel; | |
1739 | ||
20ef56db | 1740 | /* Until we store the proper pid, enable the SIGCHLD handler |
d0d6b7c5 JB |
1741 | to recognize an unknown pid as standing for this process. |
1742 | It is very important not to let this `marker' value stay | |
1743 | in the table after this function has returned; if it does | |
1744 | it might cause call-process to hang and subsequent asynchronous | |
1745 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1746 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1747 | |
5cf2b69b KH |
1748 | /* This must be called after the above line because it may signal an |
1749 | error. */ | |
1750 | setup_process_coding_systems (process); | |
1751 | ||
ececcbec | 1752 | BLOCK_INPUT; |
177c0ea7 | 1753 | |
d0d6b7c5 JB |
1754 | { |
1755 | /* child_setup must clobber environ on systems with true vfork. | |
1756 | Protect it from permanent change. */ | |
1757 | char **save_environ = environ; | |
12d8b6ab | 1758 | volatile Lisp_Object encoded_current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1759 | |
e98d950b | 1760 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1761 | pid = vfork (); |
1762 | if (pid == 0) | |
e98d950b | 1763 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1764 | { |
1765 | int xforkin = forkin; | |
1766 | int xforkout = forkout; | |
1767 | ||
1768 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1769 | but fails to handle all the cases. */ | |
1770 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1771 | sigsetmask (SIGEMPTYMASK); | |
1772 | #endif | |
1773 | ||
1774 | /* Make the pty be the controlling terminal of the process. */ | |
1775 | #ifdef HAVE_PTYS | |
1776 | /* First, disconnect its current controlling terminal. */ | |
1777 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1778 | /* We tried doing setsid only if pty_flag, but it caused |
1779 | process_set_signal to fail on SGI when using a pipe. */ | |
1780 | setsid (); | |
ce4c9c90 | 1781 | /* Make the pty's terminal the controlling terminal. */ |
ce8f5a9a | 1782 | if (pty_flag && xforkin >= 0) |
39e9ebcd | 1783 | { |
39e9ebcd RS |
1784 | #ifdef TIOCSCTTY |
1785 | /* We ignore the return value | |
1786 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1787 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1788 | #endif |
39e9ebcd | 1789 | } |
d0d6b7c5 | 1790 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1791 | #ifdef USG |
000ab717 | 1792 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1793 | afterwards. Otherwise, we lose our controlling tty which |
1794 | is set when we open the pty. */ | |
1795 | setpgrp (); | |
1796 | #endif /* USG */ | |
1797 | #endif /* not HAVE_SETSID */ | |
a7ebc409 | 1798 | #if defined (LDISC1) |
9bcf8ec6 KH |
1799 | if (pty_flag && xforkin >= 0) |
1800 | { | |
1801 | struct termios t; | |
1802 | tcgetattr (xforkin, &t); | |
1803 | t.c_lflag = LDISC1; | |
1804 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1805 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1806 | } |
1807 | #else | |
aafadd9f | 1808 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1809 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1810 | { |
1811 | /* Use new line discipline. */ | |
1812 | int ldisc = NTTYDISC; | |
4458f555 | 1813 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1814 | } |
000ab717 | 1815 | #endif |
9bcf8ec6 | 1816 | #endif |
177c0ea7 | 1817 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1818 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1819 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1820 | if (pty_flag) | |
1821 | { | |
177c0ea7 | 1822 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1823 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1824 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
ce8f5a9a AS |
1825 | if (j >= 0) |
1826 | { | |
1827 | ioctl (j, TIOCNOTTY, 0); | |
1828 | emacs_close (j); | |
1829 | } | |
5a570e37 | 1830 | #ifndef USG |
d0d6b7c5 JB |
1831 | /* In order to get a controlling terminal on some versions |
1832 | of BSD, it is necessary to put the process in pgrp 0 | |
1833 | before it opens the terminal. */ | |
99c1aeca | 1834 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1835 | setpgid (0, 0); |
1836 | #else | |
d0d6b7c5 | 1837 | setpgrp (0, 0); |
3ea1d291 | 1838 | #endif |
d0d6b7c5 JB |
1839 | #endif |
1840 | } | |
1841 | #endif /* TIOCNOTTY */ | |
1842 | ||
e39a993c | 1843 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1844 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1845 | conditional on TIOCSPGRP, |
1846 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1847 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1848 | that system does seem to need this code, even though | |
1849 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1850 | /* Now close the pty (if we had it open) and reopen it. |
1851 | This makes the pty the controlling terminal of the subprocess. */ | |
1852 | if (pty_flag) | |
1853 | { | |
99e3d726 | 1854 | |
68c45bf0 PE |
1855 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1856 | would work? */ | |
d0d6b7c5 | 1857 | if (xforkin >= 0) |
68c45bf0 PE |
1858 | emacs_close (xforkin); |
1859 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1860 | |
4aa54ba8 RS |
1861 | if (xforkin < 0) |
1862 | { | |
68c45bf0 PE |
1863 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
1864 | emacs_write (1, pty_name, strlen (pty_name)); | |
1865 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
1866 | _exit (1); |
1867 | } | |
1868 | ||
d0d6b7c5 | 1869 | } |
e39a993c | 1870 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1871 | |
d0d6b7c5 | 1872 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
1873 | if (pty_flag) |
1874 | { | |
1875 | SETUP_SLAVE_PTY; | |
1876 | } | |
d0d6b7c5 JB |
1877 | #endif /* SETUP_SLAVE_PTY */ |
1878 | #ifdef AIX | |
1879 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
1880 | Now reenable it in the child, so it will die when we want it to. */ | |
1881 | if (pty_flag) | |
1882 | signal (SIGHUP, SIG_DFL); | |
1883 | #endif | |
1884 | #endif /* HAVE_PTYS */ | |
1885 | ||
0dc70c33 KH |
1886 | signal (SIGINT, SIG_DFL); |
1887 | signal (SIGQUIT, SIG_DFL); | |
2f9a22e2 | 1888 | /* GConf causes us to ignore SIGPIPE, make sure it is restored |
c0ad4ea5 AS |
1889 | in the child. */ |
1890 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 KH |
1891 | |
1892 | /* Stop blocking signals in the child. */ | |
123403e4 | 1893 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
5e7e1da2 | 1894 | |
ab01d0a8 RS |
1895 | if (pty_flag) |
1896 | child_setup_tty (xforkout); | |
e98d950b RS |
1897 | #ifdef WINDOWSNT |
1898 | pid = child_setup (xforkin, xforkout, xforkout, | |
12d8b6ab | 1899 | new_argv, 1, encoded_current_dir); |
177c0ea7 | 1900 | #else /* not WINDOWSNT */ |
2c4df143 YM |
1901 | #ifdef FD_CLOEXEC |
1902 | emacs_close (wait_child_setup[0]); | |
1903 | #endif | |
d0d6b7c5 | 1904 | child_setup (xforkin, xforkout, xforkout, |
12d8b6ab | 1905 | new_argv, 1, encoded_current_dir); |
e98d950b | 1906 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1907 | } |
1908 | environ = save_environ; | |
1909 | } | |
1910 | ||
ececcbec RS |
1911 | UNBLOCK_INPUT; |
1912 | ||
4a127b3b | 1913 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 1914 | if (pid < 0) |
6311cf58 RS |
1915 | { |
1916 | if (forkin >= 0) | |
68c45bf0 | 1917 | emacs_close (forkin); |
6311cf58 | 1918 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1919 | emacs_close (forkout); |
6311cf58 | 1920 | } |
4a127b3b KH |
1921 | else |
1922 | { | |
1923 | /* vfork succeeded. */ | |
6bfd98e7 | 1924 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 1925 | |
e98d950b | 1926 | #ifdef WINDOWSNT |
4a127b3b | 1927 | register_child (pid, inchannel); |
e98d950b RS |
1928 | #endif /* WINDOWSNT */ |
1929 | ||
4a127b3b KH |
1930 | /* If the subfork execv fails, and it exits, |
1931 | this close hangs. I don't know why. | |
1932 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
1933 | { |
1934 | struct atimer *timer; | |
e9a9ae03 | 1935 | EMACS_TIME offset = make_emacs_time (1, 0); |
177c0ea7 | 1936 | |
30904ab7 | 1937 | stop_polling (); |
30904ab7 | 1938 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); |
177c0ea7 | 1939 | |
30904ab7 GM |
1940 | if (forkin >= 0) |
1941 | emacs_close (forkin); | |
1942 | ||
1943 | cancel_atimer (timer); | |
1944 | start_polling (); | |
1945 | } | |
177c0ea7 | 1946 | |
4a127b3b | 1947 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1948 | emacs_close (forkout); |
d0d6b7c5 | 1949 | |
875e6b94 | 1950 | #ifdef HAVE_PTYS |
4a127b3b | 1951 | if (pty_flag) |
6a09a33b | 1952 | pset_tty_name (XPROCESS (process), build_string (pty_name)); |
4a127b3b | 1953 | else |
875e6b94 | 1954 | #endif |
6a09a33b | 1955 | pset_tty_name (XPROCESS (process), Qnil); |
2c4df143 YM |
1956 | |
1957 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
1958 | /* Wait for child_setup to complete in case that vfork is | |
1959 | actually defined as fork. The descriptor wait_child_setup[1] | |
1960 | of a pipe is closed at the child side either by close-on-exec | |
1961 | on successful execvp or the _exit call in child_setup. */ | |
1962 | { | |
1963 | char dummy; | |
1964 | ||
1965 | emacs_close (wait_child_setup[1]); | |
1966 | emacs_read (wait_child_setup[0], &dummy, 1); | |
1967 | emacs_close (wait_child_setup[0]); | |
1968 | } | |
1969 | #endif | |
4a127b3b | 1970 | } |
3b9a3dfa | 1971 | |
4a127b3b KH |
1972 | /* Restore the signal state whether vfork succeeded or not. |
1973 | (We will signal an error, below, if it failed.) */ | |
351e611f | 1974 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1975 | /* Restore the parent's signal handlers. */ |
1976 | sigaction (SIGINT, &sigint_action, 0); | |
1977 | sigaction (SIGQUIT, &sigquit_action, 0); | |
c0ad4ea5 | 1978 | sigaction (SIGPIPE, &sigpipe_action, 0); |
0dc70c33 KH |
1979 | #ifdef AIX |
1980 | sigaction (SIGHUP, &sighup_action, 0); | |
1981 | #endif | |
351e611f | 1982 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 | 1983 | /* Stop blocking signals in the parent. */ |
123403e4 | 1984 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
4a127b3b KH |
1985 | |
1986 | /* Now generate the error if vfork failed. */ | |
1987 | if (pid < 0) | |
1988 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 1989 | } |
d0d6b7c5 | 1990 | |
850d0752 | 1991 | void |
d3da34e0 | 1992 | create_pty (Lisp_Object process) |
850d0752 NR |
1993 | { |
1994 | int inchannel, outchannel; | |
afd4052b | 1995 | int pty_flag = 0; |
850d0752 NR |
1996 | |
1997 | inchannel = outchannel = -1; | |
1998 | ||
1999 | #ifdef HAVE_PTYS | |
2000 | if (!NILP (Vprocess_connection_type)) | |
2001 | outchannel = inchannel = allocate_pty (); | |
2002 | ||
2003 | if (inchannel >= 0) | |
2004 | { | |
2005 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
2006 | /* On most USG systems it does not work to open the pty's tty here, | |
2007 | then close it and reopen it in the child. */ | |
2008 | #ifdef O_NOCTTY | |
2009 | /* Don't let this terminal become our controlling terminal | |
2010 | (in case we don't have one). */ | |
afd4052b | 2011 | int forkout = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
850d0752 | 2012 | #else |
afd4052b | 2013 | int forkout = emacs_open (pty_name, O_RDWR, 0); |
850d0752 | 2014 | #endif |
aba7731a | 2015 | if (forkout < 0) |
850d0752 | 2016 | report_file_error ("Opening pty", Qnil); |
019d2c4c | 2017 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
2018 | /* In the case that vfork is defined as fork, the parent process |
2019 | (Emacs) may send some data before the child process completes | |
2020 | tty options setup. So we setup tty before forking. */ | |
2021 | child_setup_tty (forkout); | |
019d2c4c | 2022 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
2023 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
2024 | pty_flag = 1; | |
2025 | } | |
2026 | #endif /* HAVE_PTYS */ | |
2027 | ||
2028 | #ifdef O_NONBLOCK | |
2029 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
2030 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
2031 | #else | |
2032 | #ifdef O_NDELAY | |
2033 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
2034 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
2035 | #endif | |
2036 | #endif | |
2037 | ||
2038 | /* Record this as an active process, with its channels. | |
2039 | As a result, child_setup will close Emacs's side of the pipes. */ | |
2040 | chan_process[inchannel] = process; | |
2041 | XPROCESS (process)->infd = inchannel; | |
2042 | XPROCESS (process)->outfd = outchannel; | |
2043 | ||
2044 | /* Previously we recorded the tty descriptor used in the subprocess. | |
2045 | It was only used for getting the foreground tty process, so now | |
2046 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
2047 | more portable (see USG_SUBTTY_WORKS above). */ | |
2048 | ||
2049 | XPROCESS (process)->pty_flag = pty_flag; | |
6a09a33b | 2050 | pset_status (XPROCESS (process), Qrun); |
850d0752 NR |
2051 | setup_process_coding_systems (process); |
2052 | ||
2053 | FD_SET (inchannel, &input_wait_mask); | |
2054 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
2055 | if (inchannel > max_process_desc) | |
2056 | max_process_desc = inchannel; | |
2057 | ||
2058 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
2059 | #ifdef HAVE_PTYS |
2060 | if (pty_flag) | |
6a09a33b | 2061 | pset_tty_name (XPROCESS (process), build_string (pty_name)); |
8b9fc636 EZ |
2062 | else |
2063 | #endif | |
6a09a33b | 2064 | pset_tty_name (XPROCESS (process), Qnil); |
850d0752 NR |
2065 | } |
2066 | ||
e690ca94 | 2067 | \f |
e690ca94 KS |
2068 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2069 | The address family of sa is not included in the result. */ | |
2070 | ||
2071 | static Lisp_Object | |
d3da34e0 | 2072 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
2073 | { |
2074 | Lisp_Object address; | |
2075 | int i; | |
2076 | unsigned char *cp; | |
2077 | register struct Lisp_Vector *p; | |
2078 | ||
63136da6 AS |
2079 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2080 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2081 | a zero length name. */ | |
89887d67 | 2082 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2083 | return empty_unibyte_string; |
63136da6 | 2084 | |
e690ca94 KS |
2085 | switch (sa->sa_family) |
2086 | { | |
2087 | case AF_INET: | |
2088 | { | |
2089 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2090 | len = sizeof (sin->sin_addr) + 1; | |
2091 | address = Fmake_vector (make_number (len), Qnil); | |
2092 | p = XVECTOR (address); | |
2093 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2094 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2095 | break; |
2096 | } | |
e1652a86 KS |
2097 | #ifdef AF_INET6 |
2098 | case AF_INET6: | |
2099 | { | |
2100 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2101 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2102 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2103 | address = Fmake_vector (make_number (len), Qnil); | |
2104 | p = XVECTOR (address); | |
2105 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2106 | for (i = 0; i < len; i++) | |
2107 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2108 | return address; | |
2109 | } | |
2110 | #endif | |
e690ca94 KS |
2111 | #ifdef HAVE_LOCAL_SOCKETS |
2112 | case AF_LOCAL: | |
2113 | { | |
fb23673a EZ |
2114 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2115 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2116 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2117 | break; |
fb23673a | 2118 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2119 | } |
2120 | #endif | |
2121 | default: | |
89887d67 | 2122 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2123 | address = Fcons (make_number (sa->sa_family), |
2124 | Fmake_vector (make_number (len), Qnil)); | |
2125 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2126 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2127 | break; |
2128 | } | |
2129 | ||
2130 | i = 0; | |
2131 | while (i < len) | |
2132 | p->contents[i++] = make_number (*cp++); | |
2133 | ||
2134 | return address; | |
2135 | } | |
2136 | ||
2137 | ||
2138 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2139 | ||
2140 | static int | |
d3da34e0 | 2141 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2142 | { |
2143 | register struct Lisp_Vector *p; | |
2144 | ||
2145 | if (VECTORP (address)) | |
2146 | { | |
2147 | p = XVECTOR (address); | |
eab3844f | 2148 | if (p->header.size == 5) |
e690ca94 KS |
2149 | { |
2150 | *familyp = AF_INET; | |
2151 | return sizeof (struct sockaddr_in); | |
2152 | } | |
e1652a86 | 2153 | #ifdef AF_INET6 |
eab3844f | 2154 | else if (p->header.size == 9) |
e1652a86 KS |
2155 | { |
2156 | *familyp = AF_INET6; | |
2157 | return sizeof (struct sockaddr_in6); | |
2158 | } | |
2159 | #endif | |
e690ca94 KS |
2160 | } |
2161 | #ifdef HAVE_LOCAL_SOCKETS | |
2162 | else if (STRINGP (address)) | |
2163 | { | |
2164 | *familyp = AF_LOCAL; | |
2165 | return sizeof (struct sockaddr_un); | |
2166 | } | |
2167 | #endif | |
d311d28c PE |
2168 | else if (CONSP (address) && TYPE_RANGED_INTEGERP (int, XCAR (address)) |
2169 | && VECTORP (XCDR (address))) | |
e690ca94 KS |
2170 | { |
2171 | struct sockaddr *sa; | |
2172 | *familyp = XINT (XCAR (address)); | |
2173 | p = XVECTOR (XCDR (address)); | |
eab3844f | 2174 | return p->header.size + sizeof (sa->sa_family); |
e690ca94 KS |
2175 | } |
2176 | return 0; | |
2177 | } | |
2178 | ||
2179 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2180 | |
2181 | The address format has been basically validated by | |
2182 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2183 | it could have come from user data. So if FAMILY is not valid, | |
2184 | we return after zeroing *SA. */ | |
e690ca94 KS |
2185 | |
2186 | static void | |
d3da34e0 | 2187 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2188 | { |
2189 | register struct Lisp_Vector *p; | |
34967d0f | 2190 | register unsigned char *cp = NULL; |
e690ca94 | 2191 | register int i; |
d311d28c | 2192 | EMACS_INT hostport; |
e690ca94 | 2193 | |
72af86bd | 2194 | memset (sa, 0, len); |
e690ca94 KS |
2195 | |
2196 | if (VECTORP (address)) | |
2197 | { | |
2198 | p = XVECTOR (address); | |
2199 | if (family == AF_INET) | |
2200 | { | |
2201 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2202 | len = sizeof (sin->sin_addr) + 1; | |
d311d28c PE |
2203 | hostport = XINT (p->contents[--len]); |
2204 | sin->sin_port = htons (hostport); | |
e690ca94 | 2205 | cp = (unsigned char *)&sin->sin_addr; |
9d1a8e5d | 2206 | sa->sa_family = family; |
e690ca94 | 2207 | } |
e1652a86 KS |
2208 | #ifdef AF_INET6 |
2209 | else if (family == AF_INET6) | |
2210 | { | |
2211 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2212 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2213 | len = sizeof (sin6->sin6_addr) + 1; | |
d311d28c PE |
2214 | hostport = XINT (p->contents[--len]); |
2215 | sin6->sin6_port = htons (hostport); | |
e1652a86 KS |
2216 | for (i = 0; i < len; i++) |
2217 | if (INTEGERP (p->contents[i])) | |
2218 | { | |
2219 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2220 | ip6[i] = ntohs (j); | |
2221 | } | |
9d1a8e5d | 2222 | sa->sa_family = family; |
0eb7675e | 2223 | return; |
e1652a86 KS |
2224 | } |
2225 | #endif | |
0eb7675e AS |
2226 | else |
2227 | return; | |
e690ca94 KS |
2228 | } |
2229 | else if (STRINGP (address)) | |
2230 | { | |
2231 | #ifdef HAVE_LOCAL_SOCKETS | |
2232 | if (family == AF_LOCAL) | |
2233 | { | |
fb23673a | 2234 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2235 | cp = SDATA (address); |
fb23673a EZ |
2236 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2237 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2238 | sa->sa_family = family; |
e690ca94 KS |
2239 | } |
2240 | #endif | |
2241 | return; | |
2242 | } | |
2243 | else | |
2244 | { | |
2245 | p = XVECTOR (XCDR (address)); | |
2246 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2247 | } | |
2248 | ||
2249 | for (i = 0; i < len; i++) | |
2250 | if (INTEGERP (p->contents[i])) | |
2251 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2252 | } | |
2253 | ||
2254 | #ifdef DATAGRAM_SOCKETS | |
2255 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2256 | 1, 1, 0, | |
2257 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2258 | (Lisp_Object process) |
e690ca94 KS |
2259 | { |
2260 | int channel; | |
2261 | ||
2262 | CHECK_PROCESS (process); | |
2263 | ||
2264 | if (!DATAGRAM_CONN_P (process)) | |
2265 | return Qnil; | |
2266 | ||
60f0fb11 | 2267 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2268 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2269 | datagram_address[channel].len); | |
2270 | } | |
2271 | ||
2272 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2273 | 2, 2, 0, | |
2274 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2275 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2276 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2277 | { |
2278 | int channel; | |
2279 | int family, len; | |
2280 | ||
2281 | CHECK_PROCESS (process); | |
2282 | ||
2283 | if (!DATAGRAM_CONN_P (process)) | |
2284 | return Qnil; | |
2285 | ||
60f0fb11 | 2286 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2287 | |
2288 | len = get_lisp_to_sockaddr_size (address, &family); | |
2289 | if (datagram_address[channel].len != len) | |
2290 | return Qnil; | |
2291 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2292 | return address; | |
2293 | } | |
2294 | #endif | |
2295 | \f | |
2296 | ||
5e2327cf | 2297 | static const struct socket_options { |
e690ca94 | 2298 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2299 | name without SO_ prefix. */ |
fce70521 | 2300 | const char *name; |
e690ca94 KS |
2301 | /* Option level SOL_... */ |
2302 | int optlevel; | |
2303 | /* Option number SO_... */ | |
2304 | int optnum; | |
6b61353c KH |
2305 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2306 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2307 | } socket_options[] = |
2308 | { | |
2309 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2310 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2311 | #endif |
2312 | #ifdef SO_BROADCAST | |
6b61353c | 2313 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2314 | #endif |
2315 | #ifdef SO_DONTROUTE | |
6b61353c | 2316 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2317 | #endif |
2318 | #ifdef SO_KEEPALIVE | |
6b61353c | 2319 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2320 | #endif |
2321 | #ifdef SO_LINGER | |
6b61353c | 2322 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2323 | #endif |
2324 | #ifdef SO_OOBINLINE | |
6b61353c | 2325 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2326 | #endif |
2327 | #ifdef SO_PRIORITY | |
6b61353c | 2328 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2329 | #endif |
2330 | #ifdef SO_REUSEADDR | |
6b61353c | 2331 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2332 | #endif |
6b61353c | 2333 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2334 | }; |
2335 | ||
6b61353c | 2336 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2337 | |
6b61353c KH |
2338 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2339 | Signals an error if setting a known option fails. | |
2340 | */ | |
e690ca94 KS |
2341 | |
2342 | static int | |
d3da34e0 | 2343 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2344 | { |
6b61353c | 2345 | char *name; |
5e2327cf | 2346 | const struct socket_options *sopt; |
6b61353c | 2347 | int ret = 0; |
e690ca94 | 2348 | |
6b61353c | 2349 | CHECK_SYMBOL (opt); |
e690ca94 | 2350 | |
51b59d79 | 2351 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2352 | for (sopt = socket_options; sopt->name; sopt++) |
2353 | if (strcmp (name, sopt->name) == 0) | |
2354 | break; | |
e690ca94 | 2355 | |
6b61353c KH |
2356 | switch (sopt->opttype) |
2357 | { | |
2358 | case SOPT_BOOL: | |
2359 | { | |
2360 | int optval; | |
2361 | optval = NILP (val) ? 0 : 1; | |
2362 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2363 | &optval, sizeof (optval)); | |
2364 | break; | |
2365 | } | |
e690ca94 | 2366 | |
6b61353c KH |
2367 | case SOPT_INT: |
2368 | { | |
2369 | int optval; | |
d311d28c | 2370 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2371 | optval = XINT (val); |
2372 | else | |
2373 | error ("Bad option value for %s", name); | |
2374 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2375 | &optval, sizeof (optval)); | |
2376 | break; | |
2377 | } | |
e690ca94 | 2378 | |
6b61353c KH |
2379 | #ifdef SO_BINDTODEVICE |
2380 | case SOPT_IFNAME: | |
2381 | { | |
2382 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2383 | |
6b61353c KH |
2384 | /* This is broken, at least in the Linux 2.4 kernel. |
2385 | To unbind, the arg must be a zero integer, not the empty string. | |
2386 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2387 | memset (devname, 0, sizeof devname); |
6b61353c | 2388 | if (STRINGP (val)) |
e690ca94 | 2389 | { |
51b59d79 | 2390 | char *arg = SSDATA (val); |
6b61353c | 2391 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2392 | memcpy (devname, arg, len); |
e690ca94 | 2393 | } |
6b61353c KH |
2394 | else if (!NILP (val)) |
2395 | error ("Bad option value for %s", name); | |
2396 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2397 | devname, IFNAMSIZ); | |
2398 | break; | |
2399 | } | |
2400 | #endif | |
e690ca94 | 2401 | |
177c0ea7 | 2402 | #ifdef SO_LINGER |
6b61353c KH |
2403 | case SOPT_LINGER: |
2404 | { | |
2405 | struct linger linger; | |
e690ca94 | 2406 | |
6b61353c KH |
2407 | linger.l_onoff = 1; |
2408 | linger.l_linger = 0; | |
d311d28c | 2409 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2410 | linger.l_linger = XINT (val); |
2411 | else | |
2412 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2413 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2414 | &linger, sizeof (linger)); | |
2415 | break; | |
2416 | } | |
e690ca94 | 2417 | #endif |
6b61353c KH |
2418 | |
2419 | default: | |
2420 | return 0; | |
e690ca94 | 2421 | } |
6b61353c KH |
2422 | |
2423 | if (ret < 0) | |
2424 | report_file_error ("Cannot set network option", | |
2425 | Fcons (opt, Fcons (val, Qnil))); | |
2426 | return (1 << sopt->optbit); | |
e690ca94 KS |
2427 | } |
2428 | ||
6b61353c KH |
2429 | |
2430 | DEFUN ("set-network-process-option", | |
2431 | Fset_network_process_option, Sset_network_process_option, | |
2432 | 3, 4, 0, | |
2433 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2434 | See `make-network-process' for a list of options and values. | |
2435 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2436 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2437 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2438 | { |
6b61353c KH |
2439 | int s; |
2440 | struct Lisp_Process *p; | |
e690ca94 | 2441 | |
e690ca94 | 2442 | CHECK_PROCESS (process); |
6b61353c KH |
2443 | p = XPROCESS (process); |
2444 | if (!NETCONN1_P (p)) | |
2445 | error ("Process is not a network process"); | |
2446 | ||
60f0fb11 | 2447 | s = p->infd; |
6b61353c KH |
2448 | if (s < 0) |
2449 | error ("Process is not running"); | |
2450 | ||
2451 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2452 | { |
6a09a33b | 2453 | pset_childp (p, Fplist_put (p->childp, option, value)); |
6b61353c | 2454 | return Qt; |
e690ca94 | 2455 | } |
6b61353c KH |
2456 | |
2457 | if (NILP (no_error)) | |
2458 | error ("Unknown or unsupported option"); | |
2459 | ||
2460 | return Qnil; | |
e690ca94 | 2461 | } |
6b61353c | 2462 | |
e690ca94 | 2463 | \f |
d888760c GM |
2464 | DEFUN ("serial-process-configure", |
2465 | Fserial_process_configure, | |
2466 | Sserial_process_configure, | |
2467 | 0, MANY, 0, | |
2468 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2469 | ||
2470 | Arguments are specified as keyword/argument pairs. Attributes that | |
2471 | are not given are re-initialized from the process's current | |
2472 | configuration (available via the function `process-contact') or set to | |
2473 | reasonable default values. The following arguments are defined: | |
2474 | ||
2475 | :process PROCESS | |
2476 | :name NAME | |
2477 | :buffer BUFFER | |
2478 | :port PORT | |
2479 | -- Any of these arguments can be given to identify the process that is | |
2480 | to be configured. If none of these arguments is given, the current | |
2481 | buffer's process is used. | |
2482 | ||
2483 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2484 | second, also called baud rate. Any value can be given for SPEED, but | |
2485 | most serial ports work only at a few defined values between 1200 and | |
2486 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2487 | serial port is not configured any further, i.e., all other arguments | |
2488 | are ignored. This may be useful for special serial ports such as | |
2489 | Bluetooth-to-serial converters which can only be configured through AT | |
2490 | commands. A value of nil for SPEED can be used only when passed | |
2491 | through `make-serial-process' or `serial-term'. | |
2492 | ||
2493 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2494 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2495 | ||
2496 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2497 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2498 | PARITY is not given, no parity is used. | |
2499 | ||
2500 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2501 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2502 | is not given or nil, 1 stopbit is used. | |
2503 | ||
2504 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2505 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2506 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2507 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2508 | flowcontrol is used. | |
2509 | ||
2510 | `serial-process-configure' is called by `make-serial-process' for the | |
2511 | initial configuration of the serial port. | |
2512 | ||
2513 | Examples: | |
2514 | ||
2515 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2516 | ||
2517 | \(serial-process-configure | |
2518 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2519 | ||
2520 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2521 | ||
2522 | usage: (serial-process-configure &rest ARGS) */) | |
f66c7cf8 | 2523 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2524 | { |
2525 | struct Lisp_Process *p; | |
2526 | Lisp_Object contact = Qnil; | |
2527 | Lisp_Object proc = Qnil; | |
2528 | struct gcpro gcpro1; | |
2529 | ||
2530 | contact = Flist (nargs, args); | |
2531 | GCPRO1 (contact); | |
2532 | ||
2533 | proc = Fplist_get (contact, QCprocess); | |
2534 | if (NILP (proc)) | |
2535 | proc = Fplist_get (contact, QCname); | |
2536 | if (NILP (proc)) | |
2537 | proc = Fplist_get (contact, QCbuffer); | |
2538 | if (NILP (proc)) | |
2539 | proc = Fplist_get (contact, QCport); | |
2540 | proc = get_process (proc); | |
2541 | p = XPROCESS (proc); | |
4d2b044c | 2542 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2543 | error ("Not a serial process"); |
2544 | ||
4d2b044c | 2545 | if (NILP (Fplist_get (p->childp, QCspeed))) |
d888760c GM |
2546 | { |
2547 | UNGCPRO; | |
2548 | return Qnil; | |
2549 | } | |
2550 | ||
2551 | serial_configure (p, contact); | |
2552 | ||
2553 | UNGCPRO; | |
2554 | return Qnil; | |
2555 | } | |
d888760c | 2556 | |
d888760c | 2557 | /* Used by make-serial-process to recover from errors. */ |
b766f867 PE |
2558 | static Lisp_Object |
2559 | make_serial_process_unwind (Lisp_Object proc) | |
d888760c GM |
2560 | { |
2561 | if (!PROCESSP (proc)) | |
1088b922 | 2562 | emacs_abort (); |
d888760c GM |
2563 | remove_process (proc); |
2564 | return Qnil; | |
2565 | } | |
d888760c | 2566 | |
d888760c GM |
2567 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2568 | 0, MANY, 0, | |
2569 | doc: /* Create and return a serial port process. | |
2570 | ||
2571 | In Emacs, serial port connections are represented by process objects, | |
2572 | so input and output work as for subprocesses, and `delete-process' | |
2573 | closes a serial port connection. However, a serial process has no | |
2574 | process id, it cannot be signaled, and the status codes are different | |
2575 | from normal processes. | |
2576 | ||
2577 | `make-serial-process' creates a process and a buffer, on which you | |
2578 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2579 | an interactive terminal. See below for examples. | |
2580 | ||
2581 | Arguments are specified as keyword/argument pairs. The following | |
2582 | arguments are defined: | |
2583 | ||
2584 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2585 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2586 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2587 | the backslashes in strings). | |
2588 | ||
2589 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
4373fd43 | 2590 | which this function calls. |
d888760c GM |
2591 | |
2592 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2593 | the value of PORT is used. | |
2594 | ||
2595 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2596 | with the process. Process output goes at the end of that buffer, | |
2597 | unless you specify an output stream or filter function to handle the | |
2598 | output. If BUFFER is not given, the value of NAME is used. | |
2599 | ||
2600 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2601 | system used for both reading and writing for this process. If CODING | |
2602 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2603 | ENCODING is used for writing. | |
2604 | ||
2605 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2606 | the process is running. If BOOL is not given, query before exiting. | |
2607 | ||
2608 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2609 | In the stopped state, a serial process does not accept incoming data, | |
2610 | but you can send outgoing data. The stopped state is cleared by | |
2611 | `continue-process' and set by `stop-process'. | |
2612 | ||
2613 | :filter FILTER -- Install FILTER as the process filter. | |
2614 | ||
2615 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2616 | ||
2617 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2618 | ||
d888760c GM |
2619 | :bytesize |
2620 | :parity | |
2621 | :stopbits | |
2622 | :flowcontrol | |
4373fd43 GM |
2623 | -- This function calls `serial-process-configure' to handle these |
2624 | arguments. | |
d888760c GM |
2625 | |
2626 | The original argument list, possibly modified by later configuration, | |
2627 | is available via the function `process-contact'. | |
2628 | ||
2629 | Examples: | |
2630 | ||
2631 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2632 | ||
2633 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2634 | ||
2635 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2636 | ||
2637 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2638 | ||
2639 | usage: (make-serial-process &rest ARGS) */) | |
f66c7cf8 | 2640 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2641 | { |
2642 | int fd = -1; | |
2643 | Lisp_Object proc, contact, port; | |
2644 | struct Lisp_Process *p; | |
2645 | struct gcpro gcpro1; | |
2646 | Lisp_Object name, buffer; | |
2647 | Lisp_Object tem, val; | |
d311d28c | 2648 | ptrdiff_t specpdl_count = -1; |
d888760c GM |
2649 | |
2650 | if (nargs == 0) | |
2651 | return Qnil; | |
2652 | ||
2653 | contact = Flist (nargs, args); | |
2654 | GCPRO1 (contact); | |
2655 | ||
2656 | port = Fplist_get (contact, QCport); | |
2657 | if (NILP (port)) | |
2658 | error ("No port specified"); | |
2659 | CHECK_STRING (port); | |
2660 | ||
2661 | if (NILP (Fplist_member (contact, QCspeed))) | |
2662 | error (":speed not specified"); | |
2663 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2664 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2665 | ||
2666 | name = Fplist_get (contact, QCname); | |
2667 | if (NILP (name)) | |
2668 | name = port; | |
2669 | CHECK_STRING (name); | |
2670 | proc = make_process (name); | |
2671 | specpdl_count = SPECPDL_INDEX (); | |
2672 | record_unwind_protect (make_serial_process_unwind, proc); | |
2673 | p = XPROCESS (proc); | |
2674 | ||
51b59d79 | 2675 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2676 | p->infd = fd; |
2677 | p->outfd = fd; | |
2678 | if (fd > max_process_desc) | |
2679 | max_process_desc = fd; | |
2680 | chan_process[fd] = proc; | |
2681 | ||
2682 | buffer = Fplist_get (contact, QCbuffer); | |
2683 | if (NILP (buffer)) | |
2684 | buffer = name; | |
2685 | buffer = Fget_buffer_create (buffer); | |
6a09a33b PE |
2686 | pset_buffer (p, buffer); |
2687 | ||
2688 | pset_childp (p, contact); | |
2689 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
2690 | pset_type (p, Qserial); | |
2691 | pset_sentinel (p, Fplist_get (contact, QCsentinel)); | |
2692 | pset_filter (p, Fplist_get (contact, QCfilter)); | |
2693 | pset_log (p, Qnil); | |
d888760c GM |
2694 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
2695 | p->kill_without_query = 1; | |
2696 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
6a09a33b | 2697 | pset_command (p, Qt); |
d888760c GM |
2698 | p->pty_flag = 0; |
2699 | ||
4d2b044c | 2700 | if (!EQ (p->command, Qt)) |
d888760c GM |
2701 | { |
2702 | FD_SET (fd, &input_wait_mask); | |
2703 | FD_SET (fd, &non_keyboard_wait_mask); | |
2704 | } | |
2705 | ||
2706 | if (BUFFERP (buffer)) | |
2707 | { | |
4d2b044c | 2708 | set_marker_both (p->mark, buffer, |
d888760c GM |
2709 | BUF_ZV (XBUFFER (buffer)), |
2710 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2711 | } | |
2712 | ||
2713 | tem = Fplist_member (contact, QCcoding); | |
2714 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2715 | tem = Qnil; | |
2716 | ||
2717 | val = Qnil; | |
2718 | if (!NILP (tem)) | |
2719 | { | |
2720 | val = XCAR (XCDR (tem)); | |
2721 | if (CONSP (val)) | |
2722 | val = XCAR (val); | |
2723 | } | |
2724 | else if (!NILP (Vcoding_system_for_read)) | |
2725 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2726 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2727 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2728 | val = Qnil; |
6a09a33b | 2729 | pset_decode_coding_system (p, val); |
d888760c GM |
2730 | |
2731 | val = Qnil; | |
2732 | if (!NILP (tem)) | |
2733 | { | |
2734 | val = XCAR (XCDR (tem)); | |
2735 | if (CONSP (val)) | |
2736 | val = XCDR (val); | |
2737 | } | |
2738 | else if (!NILP (Vcoding_system_for_write)) | |
2739 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2740 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2741 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2742 | val = Qnil; |
6a09a33b | 2743 | pset_encode_coding_system (p, val); |
d888760c GM |
2744 | |
2745 | setup_process_coding_systems (proc); | |
6a09a33b | 2746 | pset_decoding_buf (p, empty_unibyte_string); |
d888760c | 2747 | p->decoding_carryover = 0; |
6a09a33b | 2748 | pset_encoding_buf (p, empty_unibyte_string); |
d888760c GM |
2749 | p->inherit_coding_system_flag |
2750 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2751 | ||
ed3751c8 | 2752 | Fserial_process_configure (nargs, args); |
d888760c GM |
2753 | |
2754 | specpdl_ptr = specpdl + specpdl_count; | |
2755 | ||
2756 | UNGCPRO; | |
2757 | return proc; | |
2758 | } | |
d888760c | 2759 | |
e690ca94 KS |
2760 | /* Create a network stream/datagram client/server process. Treated |
2761 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2762 | differences are in status display and process deletion. A network |
2763 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2764 | stop/continue it and deactivate/close it via delete-process */ |
2765 | ||
177c0ea7 JB |
2766 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2767 | 0, MANY, 0, | |
e690ca94 KS |
2768 | doc: /* Create and return a network server or client process. |
2769 | ||
fa9d4315 | 2770 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2771 | input and output work as for subprocesses and `delete-process' closes |
2772 | a network connection. However, a network process has no process id, | |
d22426e1 | 2773 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2774 | processes. |
2775 | ||
2776 | Arguments are specified as keyword/argument pairs. The following | |
2777 | arguments are defined: | |
2778 | ||
2779 | :name NAME -- NAME is name for process. It is modified if necessary | |
2780 | to make it unique. | |
2781 | ||
2782 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2783 | with the process. Process output goes at end of that buffer, unless | |
2784 | you specify an output stream or filter function to handle the output. | |
2785 | BUFFER may be also nil, meaning that this process is not associated | |
2786 | with any buffer. | |
2787 | ||
2788 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2789 | address. The symbol `local' specifies the local host. If specified | |
2790 | for a server process, it must be a valid name or address for the local | |
2791 | host, and only clients connecting to that address will be accepted. | |
2792 | ||
2793 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2794 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2795 | a random port number is selected for the server. (If Emacs was |
2796 | compiled with getaddrinfo, a port number can also be specified as a | |
2797 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2798 | |
9057ff80 | 2799 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2800 | stream type connection, `datagram' creates a datagram type connection, |
2801 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2802 | |
e690ca94 | 2803 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2804 | service specified by HOST and SERVICE. The default (nil) is to use |
2805 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2806 | and port number specified by HOST and SERVICE. Other address families | |
2807 | supported are: | |
e690ca94 | 2808 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2809 | ipv4 -- use IPv4 address family only. |
2810 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2811 | |
2812 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2813 | This parameter is ignored when opening a client process. When specified | |
2814 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2815 | ||
2816 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2817 | connection. This parameter is ignored when opening a stream server | |
2818 | process. For a datagram server process, it specifies the initial | |
2819 | setting of the remote datagram address. When specified for a client | |
2820 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2821 | ||
2822 | The format of ADDRESS depends on the address family: | |
2823 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2824 | corresponding to numeric IP address A.B.C.D and port number P. | |
2825 | - A local address is represented as a string with the address in the | |
2826 | local address space. | |
2827 | - An "unsupported family" address is represented by a cons (F . AV) | |
2828 | where F is the family number and AV is a vector containing the socket | |
2829 | address data with one element per address data byte. Do not rely on | |
2830 | this format in portable code, as it may depend on implementation | |
2831 | defined constants, data sizes, and data structure alignment. | |
2832 | ||
6b61353c KH |
2833 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2834 | system used for both reading and writing for this process. If CODING | |
2835 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2836 | ENCODING is used for writing. | |
e690ca94 KS |
2837 | |
2838 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2839 | return without waiting for the connection to complete; instead, the | |
2840 | sentinel function will be called with second arg matching "open" (if | |
2841 | successful) or "failed" when the connect completes. Default is to use | |
2842 | a blocking connect (i.e. wait) for stream type connections. | |
2843 | ||
2844 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2845 | running when Emacs is exited. |
e690ca94 KS |
2846 | |
2847 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2848 | In the stopped state, a server process does not accept new | |
2849 | connections, and a client process does not handle incoming traffic. | |
2850 | The stopped state is cleared by `continue-process' and set by | |
2851 | `stop-process'. | |
2852 | ||
2853 | :filter FILTER -- Install FILTER as the process filter. | |
2854 | ||
7392e23c KS |
2855 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2856 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2857 | If this keyword is not specified, the strings are multibyte if |
016a35df | 2858 | the default value of `enable-multibyte-characters' is non-nil. |
03f04413 | 2859 | |
e690ca94 KS |
2860 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2861 | ||
2862 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2863 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2864 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2865 | is the server process, CLIENT is the new process for the connection, | |
2866 | and MESSAGE is a string. | |
2867 | ||
faa7db08 | 2868 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2869 | |
6b61353c | 2870 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2871 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2872 | If QLEN is an integer, it is used as the max. length of the server's |
2873 | pending connection queue (also known as the backlog); the default | |
2874 | queue length is 5. Default is to create a client process. | |
2875 | ||
2876 | The following network options can be specified for this connection: | |
2877 | ||
2878 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2879 | :dontroute BOOL -- Only send to directly connected hosts. | |
2880 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2881 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2882 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2883 | :priority INT -- Set protocol defined priority for sent packets. | |
2884 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2885 | (this is allowed by default for a server process). | |
2886 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2887 | special privileges on some systems. | |
2888 | ||
2889 | Consult the relevant system programmer's manual pages for more | |
2890 | information on using these options. | |
2891 | ||
2892 | ||
2893 | A server process will listen for and accept connections from clients. | |
2894 | When a client connection is accepted, a new network process is created | |
2895 | for the connection with the following parameters: | |
e690ca94 | 2896 | |
e690ca94 KS |
2897 | - The client's process name is constructed by concatenating the server |
2898 | process' NAME and a client identification string. | |
2899 | - If the FILTER argument is non-nil, the client process will not get a | |
2900 | separate process buffer; otherwise, the client's process buffer is a newly | |
2901 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2902 | NAME concatenated with the client identification string. |
e690ca94 KS |
2903 | - The connection type and the process filter and sentinel parameters are |
2904 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2905 | - The client process' contact info is set according to the client's | |
2906 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2907 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2908 | |
2909 | Notice that the FILTER and SENTINEL args are never used directly by | |
2910 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2911 | the server process, but via the optional :log function, accepted (and |
2912 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2913 | |
365aee82 KS |
2914 | The original argument list, modified with the actual connection |
2915 | information, is available via the `process-contact' function. | |
365aee82 | 2916 | |
fa9d4315 | 2917 | usage: (make-network-process &rest ARGS) */) |
f66c7cf8 | 2918 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 JB |
2919 | { |
2920 | Lisp_Object proc; | |
e690ca94 KS |
2921 | Lisp_Object contact; |
2922 | struct Lisp_Process *p; | |
70dbdb36 | 2923 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2924 | struct addrinfo ai, *res, *lres; |
e1652a86 | 2925 | struct addrinfo hints; |
8ea90aa3 DN |
2926 | const char *portstring; |
2927 | char portbuf[128]; | |
70dbdb36 | 2928 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2929 | struct _emacs_addrinfo |
2930 | { | |
2931 | int ai_family; | |
2932 | int ai_socktype; | |
2933 | int ai_protocol; | |
2934 | int ai_addrlen; | |
2935 | struct sockaddr *ai_addr; | |
2936 | struct _emacs_addrinfo *ai_next; | |
2937 | } ai, *res, *lres; | |
418b48fd | 2938 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2939 | struct sockaddr_in address_in; |
2940 | #ifdef HAVE_LOCAL_SOCKETS | |
2941 | struct sockaddr_un address_un; | |
2942 | #endif | |
2943 | int port; | |
dd2a17ab KS |
2944 | int ret = 0; |
2945 | int xerrno = 0; | |
418b48fd | 2946 | int s = -1, outch, inch; |
e690ca94 | 2947 | struct gcpro gcpro1; |
d311d28c PE |
2948 | ptrdiff_t count = SPECPDL_INDEX (); |
2949 | ptrdiff_t count1; | |
e690ca94 KS |
2950 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2951 | Lisp_Object tem; | |
2952 | Lisp_Object name, buffer, host, service, address; | |
2953 | Lisp_Object filter, sentinel; | |
2954 | int is_non_blocking_client = 0; | |
6b61353c | 2955 | int is_server = 0, backlog = 5; |
9057ff80 | 2956 | int socktype; |
e690ca94 KS |
2957 | int family = -1; |
2958 | ||
2959 | if (nargs == 0) | |
2960 | return Qnil; | |
dd2a17ab | 2961 | |
e690ca94 KS |
2962 | /* Save arguments for process-contact and clone-process. */ |
2963 | contact = Flist (nargs, args); | |
2964 | GCPRO1 (contact); | |
2965 | ||
bff3ed0a RS |
2966 | #ifdef WINDOWSNT |
2967 | /* Ensure socket support is loaded if available. */ | |
2968 | init_winsock (TRUE); | |
2969 | #endif | |
2970 | ||
9057ff80 KS |
2971 | /* :type TYPE (nil: stream, datagram */ |
2972 | tem = Fplist_get (contact, QCtype); | |
2973 | if (NILP (tem)) | |
2974 | socktype = SOCK_STREAM; | |
2975 | #ifdef DATAGRAM_SOCKETS | |
2976 | else if (EQ (tem, Qdatagram)) | |
2977 | socktype = SOCK_DGRAM; | |
f00c449b SM |
2978 | #endif |
2979 | #ifdef HAVE_SEQPACKET | |
2980 | else if (EQ (tem, Qseqpacket)) | |
2981 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 2982 | #endif |
9057ff80 KS |
2983 | else |
2984 | error ("Unsupported connection type"); | |
e690ca94 KS |
2985 | |
2986 | /* :server BOOL */ | |
2987 | tem = Fplist_get (contact, QCserver); | |
2988 | if (!NILP (tem)) | |
2989 | { | |
75728599 JR |
2990 | /* Don't support network sockets when non-blocking mode is |
2991 | not available, since a blocked Emacs is not useful. */ | |
5e617bc2 | 2992 | #if !defined (O_NONBLOCK) && !defined (O_NDELAY) |
e690ca94 KS |
2993 | error ("Network servers not supported"); |
2994 | #else | |
2995 | is_server = 1; | |
d311d28c | 2996 | if (TYPE_RANGED_INTEGERP (int, tem)) |
6b61353c | 2997 | backlog = XINT (tem); |
e690ca94 KS |
2998 | #endif |
2999 | } | |
3000 | ||
3001 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
3002 | QCaddress = is_server ? QClocal : QCremote; | |
3003 | ||
d7e344cd | 3004 | /* :nowait BOOL */ |
84b31826 | 3005 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
3006 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
3007 | { | |
3008 | #ifndef NON_BLOCKING_CONNECT | |
3009 | error ("Non-blocking connect not supported"); | |
3010 | #else | |
3011 | is_non_blocking_client = 1; | |
3012 | #endif | |
3013 | } | |
3014 | ||
3015 | name = Fplist_get (contact, QCname); | |
3016 | buffer = Fplist_get (contact, QCbuffer); | |
3017 | filter = Fplist_get (contact, QCfilter); | |
3018 | sentinel = Fplist_get (contact, QCsentinel); | |
3019 | ||
b7826503 | 3020 | CHECK_STRING (name); |
e690ca94 | 3021 | |
e690ca94 KS |
3022 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
3023 | ai.ai_socktype = socktype; | |
3024 | ai.ai_protocol = 0; | |
3025 | ai.ai_next = NULL; | |
3026 | res = &ai; | |
a319f7c1 | 3027 | |
e690ca94 KS |
3028 | /* :local ADDRESS or :remote ADDRESS */ |
3029 | address = Fplist_get (contact, QCaddress); | |
3030 | if (!NILP (address)) | |
a319f7c1 | 3031 | { |
e690ca94 KS |
3032 | host = service = Qnil; |
3033 | ||
3034 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
3035 | error ("Malformed :address"); | |
3036 | ai.ai_family = family; | |
3037 | ai.ai_addr = alloca (ai.ai_addrlen); | |
3038 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
3039 | goto open_socket; | |
a319f7c1 | 3040 | } |
e690ca94 KS |
3041 | |
3042 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
3043 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 3044 | if (NILP (tem)) |
a319f7c1 | 3045 | { |
5e617bc2 | 3046 | #if defined (HAVE_GETADDRINFO) && defined (AF_INET6) |
e1652a86 KS |
3047 | family = AF_UNSPEC; |
3048 | #else | |
3049 | family = AF_INET; | |
e690ca94 | 3050 | #endif |
a319f7c1 | 3051 | } |
e1652a86 KS |
3052 | #ifdef HAVE_LOCAL_SOCKETS |
3053 | else if (EQ (tem, Qlocal)) | |
3054 | family = AF_LOCAL; | |
3055 | #endif | |
3056 | #ifdef AF_INET6 | |
3057 | else if (EQ (tem, Qipv6)) | |
3058 | family = AF_INET6; | |
3059 | #endif | |
3060 | else if (EQ (tem, Qipv4)) | |
3061 | family = AF_INET; | |
d311d28c | 3062 | else if (TYPE_RANGED_INTEGERP (int, tem)) |
e1652a86 KS |
3063 | family = XINT (tem); |
3064 | else | |
e690ca94 | 3065 | error ("Unknown address family"); |
e1652a86 | 3066 | |
e690ca94 KS |
3067 | ai.ai_family = family; |
3068 | ||
3069 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3070 | service = Fplist_get (contact, QCservice); | |
3071 | ||
66a9f7f4 SM |
3072 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3073 | host = Fplist_get (contact, QChost); | |
3074 | if (!NILP (host)) | |
3075 | { | |
3076 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
3077 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
3078 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
3079 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
3080 | CHECK_STRING (host); |
3081 | } | |
3082 | ||
e690ca94 KS |
3083 | #ifdef HAVE_LOCAL_SOCKETS |
3084 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3085 | { |
66a9f7f4 SM |
3086 | if (!NILP (host)) |
3087 | { | |
3088 | message (":family local ignores the :host \"%s\" property", | |
3089 | SDATA (host)); | |
3090 | contact = Fplist_put (contact, QChost, Qnil); | |
3091 | host = Qnil; | |
3092 | } | |
b7826503 | 3093 | CHECK_STRING (service); |
72af86bd | 3094 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3095 | address_un.sun_family = AF_LOCAL; |
e99a530f PE |
3096 | if (sizeof address_un.sun_path <= SBYTES (service)) |
3097 | error ("Service name too long"); | |
3098 | strcpy (address_un.sun_path, SSDATA (service)); | |
e690ca94 KS |
3099 | ai.ai_addr = (struct sockaddr *) &address_un; |
3100 | ai.ai_addrlen = sizeof address_un; | |
3101 | goto open_socket; | |
d0d6b7c5 | 3102 | } |
e690ca94 | 3103 | #endif |
a319f7c1 | 3104 | |
798b64bb KH |
3105 | /* Slow down polling to every ten seconds. |
3106 | Some kernels have a bug which causes retrying connect to fail | |
3107 | after a connect. Polling can interfere with gethostbyname too. */ | |
3108 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3109 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3110 | { |
3111 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3112 | bind_polling_period (10); | |
3113 | } | |
798b64bb KH |
3114 | #endif |
3115 | ||
a319f7c1 | 3116 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3117 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3118 | Otherwise, use getservbyname to lookup the service. */ | |
3119 | if (!NILP (host)) | |
3120 | { | |
3121 | ||
3122 | /* SERVICE can either be a string or int. | |
3123 | Convert to a C string for later use by getaddrinfo. */ | |
3124 | if (EQ (service, Qt)) | |
3125 | portstring = "0"; | |
3126 | else if (INTEGERP (service)) | |
3127 | { | |
c2982e87 | 3128 | sprintf (portbuf, "%"pI"d", XINT (service)); |
e690ca94 KS |
3129 | portstring = portbuf; |
3130 | } | |
3131 | else | |
3132 | { | |
3133 | CHECK_STRING (service); | |
42a5b22f | 3134 | portstring = SSDATA (service); |
e690ca94 KS |
3135 | } |
3136 | ||
3137 | immediate_quit = 1; | |
3138 | QUIT; | |
3139 | memset (&hints, 0, sizeof (hints)); | |
3140 | hints.ai_flags = 0; | |
e1652a86 | 3141 | hints.ai_family = family; |
e690ca94 KS |
3142 | hints.ai_socktype = socktype; |
3143 | hints.ai_protocol = 0; | |
08116b48 CY |
3144 | |
3145 | #ifdef HAVE_RES_INIT | |
3146 | res_init (); | |
3147 | #endif | |
3148 | ||
42a5b22f | 3149 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3150 | if (ret) |
f6270f62 | 3151 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3152 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3153 | #else |
42a5b22f | 3154 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3155 | #endif |
e690ca94 | 3156 | immediate_quit = 0; |
a319f7c1 | 3157 | |
e690ca94 KS |
3158 | goto open_socket; |
3159 | } | |
3160 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3161 | |
e690ca94 KS |
3162 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3163 | has been specified (e.g. for a local server process). */ | |
3164 | ||
3165 | if (EQ (service, Qt)) | |
3166 | port = 0; | |
3167 | else if (INTEGERP (service)) | |
3168 | port = htons ((unsigned short) XINT (service)); | |
3169 | else | |
616da37c | 3170 | { |
e690ca94 KS |
3171 | struct servent *svc_info; |
3172 | CHECK_STRING (service); | |
42a5b22f | 3173 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3174 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3175 | if (svc_info == 0) | |
d5db4077 | 3176 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3177 | port = svc_info->s_port; |
3178 | } | |
3179 | ||
72af86bd | 3180 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3181 | address_in.sin_family = family; |
3182 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3183 | address_in.sin_port = port; | |
3184 | ||
3185 | #ifndef HAVE_GETADDRINFO | |
3186 | if (!NILP (host)) | |
3187 | { | |
3188 | struct hostent *host_info_ptr; | |
3189 | ||
c5e87d10 | 3190 | /* gethostbyname may fail with TRY_AGAIN, but we don't honor that, |
f3d9532b | 3191 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3192 | immediate_quit = 1; |
3193 | QUIT; | |
08116b48 CY |
3194 | |
3195 | #ifdef HAVE_RES_INIT | |
3196 | res_init (); | |
3197 | #endif | |
3198 | ||
d5db4077 | 3199 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3200 | immediate_quit = 0; |
177c0ea7 | 3201 | |
e690ca94 KS |
3202 | if (host_info_ptr) |
3203 | { | |
72af86bd AS |
3204 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3205 | host_info_ptr->h_length); | |
e690ca94 KS |
3206 | family = host_info_ptr->h_addrtype; |
3207 | address_in.sin_family = family; | |
3208 | } | |
3209 | else | |
3210 | /* Attempt to interpret host as numeric inet address */ | |
3211 | { | |
4624371d | 3212 | unsigned long numeric_addr; |
51b59d79 | 3213 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3214 | if (numeric_addr == -1) |
d5db4077 | 3215 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3216 | |
72af86bd AS |
3217 | memcpy (&address_in.sin_addr, &numeric_addr, |
3218 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3219 | } |
d0d6b7c5 | 3220 | |
e690ca94 | 3221 | } |
dd2a17ab | 3222 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3223 | |
e690ca94 KS |
3224 | ai.ai_family = family; |
3225 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3226 | ai.ai_addrlen = sizeof address_in; | |
3227 | ||
3228 | open_socket: | |
3229 | ||
dd2a17ab | 3230 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3231 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3232 | s = -1; |
457a9bee | 3233 | |
dd2a17ab KS |
3234 | for (lres = res; lres; lres = lres->ai_next) |
3235 | { | |
f66c7cf8 | 3236 | ptrdiff_t optn; |
c5101a77 | 3237 | int optbits; |
6b61353c | 3238 | |
4dc343ee | 3239 | #ifdef WINDOWSNT |
649dbf36 | 3240 | retry_connect: |
4dc343ee | 3241 | #endif |
649dbf36 | 3242 | |
dd2a17ab KS |
3243 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3244 | if (s < 0) | |
3245 | { | |
3246 | xerrno = errno; | |
3247 | continue; | |
3248 | } | |
0f2ee0c1 | 3249 | |
e690ca94 KS |
3250 | #ifdef DATAGRAM_SOCKETS |
3251 | if (!is_server && socktype == SOCK_DGRAM) | |
3252 | break; | |
3253 | #endif /* DATAGRAM_SOCKETS */ | |
3254 | ||
dd2a17ab | 3255 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3256 | if (is_non_blocking_client) |
dd2a17ab KS |
3257 | { |
3258 | #ifdef O_NONBLOCK | |
3259 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3260 | #else | |
3261 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3262 | #endif | |
3263 | if (ret < 0) | |
3264 | { | |
3265 | xerrno = errno; | |
3266 | emacs_close (s); | |
3267 | s = -1; | |
3268 | continue; | |
3269 | } | |
3270 | } | |
3271 | #endif | |
177c0ea7 | 3272 | |
dd2a17ab | 3273 | /* Make us close S if quit. */ |
dd2a17ab KS |
3274 | record_unwind_protect (close_file_unwind, make_number (s)); |
3275 | ||
6b61353c KH |
3276 | /* Parse network options in the arg list. |
3277 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3278 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3279 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3280 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3281 | ||
e690ca94 KS |
3282 | if (is_server) |
3283 | { | |
3284 | /* Configure as a server socket. */ | |
6b61353c KH |
3285 | |
3286 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3287 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3288 | #ifdef HAVE_LOCAL_SOCKETS |
3289 | if (family != AF_LOCAL) | |
3290 | #endif | |
6b61353c KH |
3291 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3292 | { | |
3293 | int optval = 1; | |
3294 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3295 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3296 | } | |
177c0ea7 | 3297 | |
e690ca94 KS |
3298 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3299 | report_file_error ("Cannot bind server socket", Qnil); | |
3300 | ||
3301 | #ifdef HAVE_GETSOCKNAME | |
3302 | if (EQ (service, Qt)) | |
3303 | { | |
3304 | struct sockaddr_in sa1; | |
401bf9b4 | 3305 | socklen_t len1 = sizeof (sa1); |
e690ca94 KS |
3306 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3307 | { | |
3308 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3309 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3310 | contact = Fplist_put (contact, QCservice, service); |
3311 | } | |
3312 | } | |
3313 | #endif | |
3314 | ||
84b31826 | 3315 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3316 | report_file_error ("Cannot listen on server socket", Qnil); |
3317 | ||
3318 | break; | |
3319 | } | |
3320 | ||
dd2a17ab KS |
3321 | immediate_quit = 1; |
3322 | QUIT; | |
3323 | ||
dd2a17ab KS |
3324 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3325 | xerrno = errno; | |
3326 | ||
dd2a17ab KS |
3327 | if (ret == 0 || xerrno == EISCONN) |
3328 | { | |
dd2a17ab KS |
3329 | /* The unwind-protect will be discarded afterwards. |
3330 | Likewise for immediate_quit. */ | |
3331 | break; | |
3332 | } | |
3333 | ||
3334 | #ifdef NON_BLOCKING_CONNECT | |
3335 | #ifdef EINPROGRESS | |
e690ca94 | 3336 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3337 | break; |
3338 | #else | |
3339 | #ifdef EWOULDBLOCK | |
e690ca94 | 3340 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3341 | break; |
3342 | #endif | |
3343 | #endif | |
3344 | #endif | |
649dbf36 CY |
3345 | |
3346 | #ifndef WINDOWSNT | |
cd591dbc HE |
3347 | if (xerrno == EINTR) |
3348 | { | |
3349 | /* Unlike most other syscalls connect() cannot be called | |
3350 | again. (That would return EALREADY.) The proper way to | |
d35af63c | 3351 | wait for completion is pselect(). */ |
401bf9b4 PE |
3352 | int sc; |
3353 | socklen_t len; | |
cd591dbc HE |
3354 | SELECT_TYPE fdset; |
3355 | retry_select: | |
3356 | FD_ZERO (&fdset); | |
3357 | FD_SET (s, &fdset); | |
3358 | QUIT; | |
d35af63c | 3359 | sc = pselect (s + 1, NULL, &fdset, NULL, NULL, NULL); |
cd591dbc HE |
3360 | if (sc == -1) |
3361 | { | |
649dbf36 | 3362 | if (errno == EINTR) |
cd591dbc | 3363 | goto retry_select; |
649dbf36 | 3364 | else |
cd591dbc HE |
3365 | report_file_error ("select failed", Qnil); |
3366 | } | |
3367 | eassert (sc > 0); | |
649dbf36 CY |
3368 | |
3369 | len = sizeof xerrno; | |
3370 | eassert (FD_ISSET (s, &fdset)); | |
3371 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3372 | report_file_error ("getsockopt failed", Qnil); | |
3373 | if (xerrno) | |
3374 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3375 | else | |
3376 | break; | |
cd591dbc | 3377 | } |
649dbf36 | 3378 | #endif /* !WINDOWSNT */ |
e333e864 | 3379 | |
0f2ee0c1 RS |
3380 | immediate_quit = 0; |
3381 | ||
dd2a17ab | 3382 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3383 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3384 | emacs_close (s); |
dd2a17ab | 3385 | s = -1; |
649dbf36 CY |
3386 | |
3387 | #ifdef WINDOWSNT | |
3388 | if (xerrno == EINTR) | |
3389 | goto retry_connect; | |
3390 | #endif | |
dd2a17ab | 3391 | } |
457a9bee | 3392 | |
e690ca94 KS |
3393 | if (s >= 0) |
3394 | { | |
3395 | #ifdef DATAGRAM_SOCKETS | |
3396 | if (socktype == SOCK_DGRAM) | |
3397 | { | |
3398 | if (datagram_address[s].sa) | |
1088b922 | 3399 | emacs_abort (); |
23f86fce | 3400 | datagram_address[s].sa = xmalloc (lres->ai_addrlen); |
e690ca94 KS |
3401 | datagram_address[s].len = lres->ai_addrlen; |
3402 | if (is_server) | |
3403 | { | |
3404 | Lisp_Object remote; | |
72af86bd | 3405 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3406 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3407 | { | |
3408 | int rfamily, rlen; | |
3409 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3410 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3411 | conv_lisp_to_sockaddr (rfamily, remote, | |
3412 | datagram_address[s].sa, rlen); | |
3413 | } | |
3414 | } | |
3415 | else | |
72af86bd | 3416 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3417 | } |
3418 | #endif | |
177c0ea7 | 3419 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3420 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3421 | #ifdef HAVE_GETSOCKNAME |
3422 | if (!is_server) | |
3423 | { | |
3424 | struct sockaddr_in sa1; | |
401bf9b4 | 3425 | socklen_t len1 = sizeof (sa1); |
2185db04 KS |
3426 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3427 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3428 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3429 | } |
3430 | #endif | |
e690ca94 KS |
3431 | } |
3432 | ||
54b3b62f YM |
3433 | immediate_quit = 0; |
3434 | ||
dd2a17ab | 3435 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3436 | if (res != &ai) |
54b3b62f YM |
3437 | { |
3438 | BLOCK_INPUT; | |
3439 | freeaddrinfo (res); | |
3440 | UNBLOCK_INPUT; | |
3441 | } | |
dd2a17ab KS |
3442 | #endif |
3443 | ||
e690ca94 KS |
3444 | /* Discard the unwind protect for closing S, if any. */ |
3445 | specpdl_ptr = specpdl + count1; | |
3446 | ||
3447 | /* Unwind bind_polling_period and request_sigio. */ | |
3448 | unbind_to (count, Qnil); | |
3449 | ||
dd2a17ab KS |
3450 | if (s < 0) |
3451 | { | |
dd2a17ab KS |
3452 | /* If non-blocking got this far - and failed - assume non-blocking is |
3453 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3454 | the normal blocking calls to open-network-stream handles this error |
3455 | better. */ | |
3456 | if (is_non_blocking_client) | |
dd2a17ab | 3457 | return Qnil; |
dd2a17ab | 3458 | |
d0d6b7c5 | 3459 | errno = xerrno; |
e690ca94 KS |
3460 | if (is_server) |
3461 | report_file_error ("make server process failed", contact); | |
3462 | else | |
3463 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3464 | } |
44ade2e9 | 3465 | |
d0d6b7c5 | 3466 | inch = s; |
59f23005 | 3467 | outch = s; |
d0d6b7c5 JB |
3468 | |
3469 | if (!NILP (buffer)) | |
3470 | buffer = Fget_buffer_create (buffer); | |
3471 | proc = make_process (name); | |
3472 | ||
3473 | chan_process[inch] = proc; | |
3474 | ||
3475 | #ifdef O_NONBLOCK | |
3476 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3477 | #else | |
3478 | #ifdef O_NDELAY | |
3479 | fcntl (inch, F_SETFL, O_NDELAY); | |
3480 | #endif | |
3481 | #endif | |
3482 | ||
e690ca94 KS |
3483 | p = XPROCESS (proc); |
3484 | ||
6a09a33b PE |
3485 | pset_childp (p, contact); |
3486 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
3487 | pset_type (p, Qnetwork); | |
177c0ea7 | 3488 | |
6a09a33b PE |
3489 | pset_buffer (p, buffer); |
3490 | pset_sentinel (p, sentinel); | |
3491 | pset_filter (p, filter); | |
3492 | pset_log (p, Fplist_get (contact, QClog)); | |
e690ca94 | 3493 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
60f0fb11 | 3494 | p->kill_without_query = 1; |
e690ca94 | 3495 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
6a09a33b | 3496 | pset_command (p, Qt); |
6bfd98e7 | 3497 | p->pid = 0; |
60f0fb11 SM |
3498 | p->infd = inch; |
3499 | p->outfd = outch; | |
84b31826 | 3500 | if (is_server && socktype != SOCK_DGRAM) |
6a09a33b | 3501 | pset_status (p, Qlisten); |
dd2a17ab | 3502 | |
f523e0c3 SM |
3503 | /* Make the process marker point into the process buffer (if any). */ |
3504 | if (BUFFERP (buffer)) | |
4d2b044c | 3505 | set_marker_both (p->mark, buffer, |
f523e0c3 SM |
3506 | BUF_ZV (XBUFFER (buffer)), |
3507 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3508 | ||
dd2a17ab | 3509 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3510 | if (is_non_blocking_client) |
dd2a17ab KS |
3511 | { |
3512 | /* We may get here if connect did succeed immediately. However, | |
3513 | in that case, we still need to signal this like a non-blocking | |
3514 | connection. */ | |
6a09a33b | 3515 | pset_status (p, Qconnect); |
dd2a17ab KS |
3516 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3517 | { | |
3518 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3519 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3520 | num_pending_connects++; |
3521 | } | |
3522 | } | |
3523 | else | |
3524 | #endif | |
e690ca94 KS |
3525 | /* A server may have a client filter setting of Qt, but it must |
3526 | still listen for incoming connects unless it is stopped. */ | |
4d2b044c DA |
3527 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
3528 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3529 | { |
3530 | FD_SET (inch, &input_wait_mask); | |
3531 | FD_SET (inch, &non_keyboard_wait_mask); | |
3532 | } | |
3533 | ||
7d0e672e RS |
3534 | if (inch > max_process_desc) |
3535 | max_process_desc = inch; | |
d0d6b7c5 | 3536 | |
e690ca94 KS |
3537 | tem = Fplist_member (contact, QCcoding); |
3538 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3539 | tem = Qnil; /* No error message (too late!). */ | |
3540 | ||
67918941 RS |
3541 | { |
3542 | /* Setup coding systems for communicating with the network stream. */ | |
dbf31225 | 3543 | struct gcpro gcpro1; |
67918941 RS |
3544 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
3545 | Lisp_Object coding_systems = Qt; | |
b93aacde | 3546 | Lisp_Object fargs[5], val; |
67918941 | 3547 | |
e690ca94 | 3548 | if (!NILP (tem)) |
6b61353c KH |
3549 | { |
3550 | val = XCAR (XCDR (tem)); | |
3551 | if (CONSP (val)) | |
3552 | val = XCAR (val); | |
3553 | } | |
e690ca94 | 3554 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3555 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3556 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3557 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3558 | /* We dare not decode end-of-line format by setting VAL to |
3559 | Qraw_text, because the existing Emacs Lisp libraries | |
9858f6c3 | 3560 | assume that they receive bare code including a sequence of |
67918941 RS |
3561 | CR LF. */ |
3562 | val = Qnil; | |
3563 | else | |
3564 | { | |
991234f0 KS |
3565 | if (NILP (host) || NILP (service)) |
3566 | coding_systems = Qnil; | |
3567 | else | |
3568 | { | |
b93aacde PE |
3569 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3570 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3571 | GCPRO1 (proc); |
b93aacde | 3572 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3573 | UNGCPRO; |
991234f0 | 3574 | } |
67918941 | 3575 | if (CONSP (coding_systems)) |
70949dac | 3576 | val = XCAR (coding_systems); |
67918941 | 3577 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3578 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3579 | else |
3580 | val = Qnil; | |
3581 | } | |
6a09a33b | 3582 | pset_decode_coding_system (p, val); |
0fa1789e | 3583 | |
e690ca94 | 3584 | if (!NILP (tem)) |
6b61353c KH |
3585 | { |
3586 | val = XCAR (XCDR (tem)); | |
3587 | if (CONSP (val)) | |
3588 | val = XCDR (val); | |
3589 | } | |
e690ca94 | 3590 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3591 | val = Vcoding_system_for_write; |
4b4deea2 | 3592 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3593 | val = Qnil; |
3594 | else | |
3595 | { | |
3596 | if (EQ (coding_systems, Qt)) | |
3597 | { | |
991234f0 KS |
3598 | if (NILP (host) || NILP (service)) |
3599 | coding_systems = Qnil; | |
3600 | else | |
3601 | { | |
b93aacde PE |
3602 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3603 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3604 | GCPRO1 (proc); |
b93aacde | 3605 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3606 | UNGCPRO; |
991234f0 | 3607 | } |
67918941 RS |
3608 | } |
3609 | if (CONSP (coding_systems)) | |
70949dac | 3610 | val = XCDR (coding_systems); |
67918941 | 3611 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3612 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3613 | else |
3614 | val = Qnil; | |
3615 | } | |
6a09a33b | 3616 | pset_encode_coding_system (p, val); |
67918941 | 3617 | } |
03f04413 | 3618 | setup_process_coding_systems (proc); |
0fa1789e | 3619 | |
6a09a33b | 3620 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 3621 | p->decoding_carryover = 0; |
6a09a33b | 3622 | pset_encoding_buf (p, empty_unibyte_string); |
0fa1789e | 3623 | |
e690ca94 | 3624 | p->inherit_coding_system_flag |
e6fca843 | 3625 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3626 | |
d0d6b7c5 JB |
3627 | UNGCPRO; |
3628 | return proc; | |
3629 | } | |
d0d6b7c5 | 3630 | |
6b61353c | 3631 | \f |
5e617bc2 | 3632 | #if defined (HAVE_NET_IF_H) |
6b61353c KH |
3633 | |
3634 | #ifdef SIOCGIFCONF | |
3635 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3636 | doc: /* Return an alist of all network interfaces and their network address. | |
3637 | Each element is a cons, the car of which is a string containing the | |
3638 | interface name, and the cdr is the network address in internal | |
3639 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3640 | (void) |
6b61353c KH |
3641 | { |
3642 | struct ifconf ifconf; | |
377538cb JD |
3643 | struct ifreq *ifreq; |
3644 | void *buf = NULL; | |
70c60eb2 PE |
3645 | ptrdiff_t buf_size = 512; |
3646 | int s, i; | |
6b61353c KH |
3647 | Lisp_Object res; |
3648 | ||
3649 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3650 | if (s < 0) | |
3651 | return Qnil; | |
3652 | ||
76667214 | 3653 | do |
6b61353c | 3654 | { |
76667214 PE |
3655 | buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1); |
3656 | ifconf.ifc_buf = buf; | |
3657 | ifconf.ifc_len = buf_size; | |
156bffbe AS |
3658 | if (ioctl (s, SIOCGIFCONF, &ifconf)) |
3659 | { | |
3660 | close (s); | |
76667214 | 3661 | xfree (buf); |
156bffbe AS |
3662 | return Qnil; |
3663 | } | |
6b61353c | 3664 | } |
76667214 | 3665 | while (ifconf.ifc_len == buf_size); |
6b61353c KH |
3666 | |
3667 | close (s); | |
6b61353c KH |
3668 | |
3669 | res = Qnil; | |
156bffbe AS |
3670 | ifreq = ifconf.ifc_req; |
3671 | while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len) | |
6b61353c | 3672 | { |
377538cb JD |
3673 | struct ifreq *ifq = ifreq; |
3674 | #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN | |
156bffbe AS |
3675 | #define SIZEOF_IFREQ(sif) \ |
3676 | ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \ | |
3677 | ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len) | |
377538cb JD |
3678 | |
3679 | int len = SIZEOF_IFREQ (ifq); | |
3680 | #else | |
3681 | int len = sizeof (*ifreq); | |
3682 | #endif | |
6b61353c | 3683 | char namebuf[sizeof (ifq->ifr_name) + 1]; |
377538cb | 3684 | i += len; |
156bffbe | 3685 | ifreq = (struct ifreq *) ((char *) ifreq + len); |
377538cb | 3686 | |
6b61353c KH |
3687 | if (ifq->ifr_addr.sa_family != AF_INET) |
3688 | continue; | |
377538cb | 3689 | |
72af86bd | 3690 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3691 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3692 | res = Fcons (Fcons (build_string (namebuf), | |
3693 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3694 | sizeof (struct sockaddr))), | |
3695 | res); | |
3696 | } | |
3697 | ||
377538cb | 3698 | xfree (buf); |
6b61353c KH |
3699 | return res; |
3700 | } | |
3701 | #endif /* SIOCGIFCONF */ | |
3702 | ||
5e617bc2 | 3703 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
6b61353c KH |
3704 | |
3705 | struct ifflag_def { | |
3706 | int flag_bit; | |
91433552 | 3707 | const char *flag_sym; |
6b61353c KH |
3708 | }; |
3709 | ||
91433552 | 3710 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3711 | #ifdef IFF_UP |
3712 | { IFF_UP, "up" }, | |
3713 | #endif | |
3714 | #ifdef IFF_BROADCAST | |
3715 | { IFF_BROADCAST, "broadcast" }, | |
3716 | #endif | |
3717 | #ifdef IFF_DEBUG | |
3718 | { IFF_DEBUG, "debug" }, | |
3719 | #endif | |
3720 | #ifdef IFF_LOOPBACK | |
3721 | { IFF_LOOPBACK, "loopback" }, | |
3722 | #endif | |
3723 | #ifdef IFF_POINTOPOINT | |
3724 | { IFF_POINTOPOINT, "pointopoint" }, | |
3725 | #endif | |
3726 | #ifdef IFF_RUNNING | |
3727 | { IFF_RUNNING, "running" }, | |
3728 | #endif | |
3729 | #ifdef IFF_NOARP | |
3730 | { IFF_NOARP, "noarp" }, | |
3731 | #endif | |
3732 | #ifdef IFF_PROMISC | |
3733 | { IFF_PROMISC, "promisc" }, | |
3734 | #endif | |
3735 | #ifdef IFF_NOTRAILERS | |
377538cb JD |
3736 | #ifdef NS_IMPL_COCOA |
3737 | /* Really means smart, notrailers is obsolete */ | |
3738 | { IFF_NOTRAILERS, "smart" }, | |
3739 | #else | |
6b61353c KH |
3740 | { IFF_NOTRAILERS, "notrailers" }, |
3741 | #endif | |
377538cb | 3742 | #endif |
6b61353c KH |
3743 | #ifdef IFF_ALLMULTI |
3744 | { IFF_ALLMULTI, "allmulti" }, | |
3745 | #endif | |
3746 | #ifdef IFF_MASTER | |
3747 | { IFF_MASTER, "master" }, | |
3748 | #endif | |
3749 | #ifdef IFF_SLAVE | |
3750 | { IFF_SLAVE, "slave" }, | |
3751 | #endif | |
3752 | #ifdef IFF_MULTICAST | |
3753 | { IFF_MULTICAST, "multicast" }, | |
3754 | #endif | |
3755 | #ifdef IFF_PORTSEL | |
3756 | { IFF_PORTSEL, "portsel" }, | |
3757 | #endif | |
3758 | #ifdef IFF_AUTOMEDIA | |
3759 | { IFF_AUTOMEDIA, "automedia" }, | |
3760 | #endif | |
3761 | #ifdef IFF_DYNAMIC | |
3762 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3763 | #endif |
2026418c YM |
3764 | #ifdef IFF_OACTIVE |
3765 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3766 | #endif |
3767 | #ifdef IFF_SIMPLEX | |
3768 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3769 | #endif | |
3770 | #ifdef IFF_LINK0 | |
3771 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3772 | #endif | |
3773 | #ifdef IFF_LINK1 | |
3774 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3775 | #endif | |
3776 | #ifdef IFF_LINK2 | |
3777 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3778 | #endif |
3779 | { 0, 0 } | |
3780 | }; | |
3781 | ||
3782 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3783 | doc: /* Return information about network interface named IFNAME. | |
3784 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3785 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
e4920bc9 | 3786 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and |
6b61353c | 3787 | FLAGS is the current flags of the interface. */) |
5842a27b | 3788 | (Lisp_Object ifname) |
6b61353c KH |
3789 | { |
3790 | struct ifreq rq; | |
3791 | Lisp_Object res = Qnil; | |
3792 | Lisp_Object elt; | |
3793 | int s; | |
3794 | int any = 0; | |
0a0d27fb PE |
3795 | #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \ |
3796 | && defined HAVE_GETIFADDRS && defined LLADDR) | |
377538cb JD |
3797 | struct ifaddrs *ifap; |
3798 | #endif | |
6b61353c KH |
3799 | |
3800 | CHECK_STRING (ifname); | |
3801 | ||
e99a530f PE |
3802 | if (sizeof rq.ifr_name <= SBYTES (ifname)) |
3803 | error ("interface name too long"); | |
3804 | strcpy (rq.ifr_name, SSDATA (ifname)); | |
6b61353c KH |
3805 | |
3806 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3807 | if (s < 0) | |
3808 | return Qnil; | |
3809 | ||
3810 | elt = Qnil; | |
5e617bc2 | 3811 | #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS) |
6b61353c KH |
3812 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3813 | { | |
3814 | int flags = rq.ifr_flags; | |
91433552 | 3815 | const struct ifflag_def *fp; |
6b61353c KH |
3816 | int fnum; |
3817 | ||
377538cb JD |
3818 | /* If flags is smaller than int (i.e. short) it may have the high bit set |
3819 | due to IFF_MULTICAST. In that case, sign extending it into | |
3820 | an int is wrong. */ | |
3821 | if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags)) | |
3822 | flags = (unsigned short) rq.ifr_flags; | |
3823 | ||
bc57d757 | 3824 | any = 1; |
82a80058 | 3825 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3826 | { |
3827 | if (flags & fp->flag_bit) | |
3828 | { | |
3829 | elt = Fcons (intern (fp->flag_sym), elt); | |
3830 | flags -= fp->flag_bit; | |
3831 | } | |
3832 | } | |
fa3c87e1 | 3833 | for (fnum = 0; flags && fnum < 32; flags >>= 1, fnum++) |
6b61353c | 3834 | { |
fa3c87e1 | 3835 | if (flags & 1) |
6b61353c KH |
3836 | { |
3837 | elt = Fcons (make_number (fnum), elt); | |
3838 | } | |
3839 | } | |
3840 | } | |
3841 | #endif | |
3842 | res = Fcons (elt, res); | |
3843 | ||
3844 | elt = Qnil; | |
5e617bc2 | 3845 | #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR) |
6b61353c KH |
3846 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3847 | { | |
3848 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3849 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3850 | int n; | |
3851 | ||
bc57d757 | 3852 | any = 1; |
6b61353c KH |
3853 | for (n = 0; n < 6; n++) |
3854 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3855 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3856 | } | |
5e617bc2 | 3857 | #elif defined (HAVE_GETIFADDRS) && defined (LLADDR) |
377538cb JD |
3858 | if (getifaddrs (&ifap) != -1) |
3859 | { | |
3860 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3861 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3862 | struct ifaddrs *it; | |
3863 | ||
3864 | for (it = ifap; it != NULL; it = it->ifa_next) | |
3865 | { | |
3866 | struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr; | |
3867 | unsigned char linkaddr[6]; | |
3868 | int n; | |
3869 | ||
3870 | if (it->ifa_addr->sa_family != AF_LINK | |
3871 | || strcmp (it->ifa_name, SSDATA (ifname)) != 0 | |
3872 | || sdl->sdl_alen != 6) | |
3873 | continue; | |
3874 | ||
5e617bc2 | 3875 | memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen); |
377538cb JD |
3876 | for (n = 0; n < 6; n++) |
3877 | p->contents[n] = make_number (linkaddr[n]); | |
3878 | ||
3879 | elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr); | |
3880 | break; | |
3881 | } | |
3882 | } | |
3883 | #ifdef HAVE_FREEIFADDRS | |
3884 | freeifaddrs (ifap); | |
6b61353c | 3885 | #endif |
377538cb JD |
3886 | |
3887 | #endif /* HAVE_GETIFADDRS && LLADDR */ | |
3888 | ||
6b61353c KH |
3889 | res = Fcons (elt, res); |
3890 | ||
3891 | elt = Qnil; | |
5e617bc2 | 3892 | #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3893 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3894 | { | |
bc57d757 | 3895 | any = 1; |
2026418c | 3896 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3897 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3898 | #else |
3899 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3900 | #endif | |
6b61353c KH |
3901 | } |
3902 | #endif | |
3903 | res = Fcons (elt, res); | |
3904 | ||
3905 | elt = Qnil; | |
5e617bc2 | 3906 | #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
6b61353c KH |
3907 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3908 | { | |
bc57d757 | 3909 | any = 1; |
6b61353c KH |
3910 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); |
3911 | } | |
3912 | #endif | |
3913 | res = Fcons (elt, res); | |
3914 | ||
3915 | elt = Qnil; | |
5e617bc2 | 3916 | #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR) |
6b61353c KH |
3917 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3918 | { | |
bc57d757 | 3919 | any = 1; |
6b61353c KH |
3920 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); |
3921 | } | |
3922 | #endif | |
3923 | res = Fcons (elt, res); | |
3924 | ||
3925 | close (s); | |
3926 | ||
3927 | return any ? res : Qnil; | |
3928 | } | |
3929 | #endif | |
5e617bc2 | 3930 | #endif /* defined (HAVE_NET_IF_H) */ |
6b61353c | 3931 | |
04391069 RS |
3932 | /* Turn off input and output for process PROC. */ |
3933 | ||
40ccffa6 | 3934 | static void |
d3da34e0 | 3935 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3936 | { |
3937 | register int inchannel, outchannel; | |
3938 | register struct Lisp_Process *p = XPROCESS (proc); | |
3939 | ||
9c6c6f49 CY |
3940 | #ifdef HAVE_GNUTLS |
3941 | /* Delete GnuTLS structures in PROC, if any. */ | |
3942 | emacs_gnutls_deinit (proc); | |
3943 | #endif /* HAVE_GNUTLS */ | |
3944 | ||
60f0fb11 SM |
3945 | inchannel = p->infd; |
3946 | outchannel = p->outfd; | |
d0d6b7c5 | 3947 | |
6b61353c | 3948 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3949 | if (p->read_output_delay > 0) |
6b61353c KH |
3950 | { |
3951 | if (--process_output_delay_count < 0) | |
3952 | process_output_delay_count = 0; | |
60f0fb11 SM |
3953 | p->read_output_delay = 0; |
3954 | p->read_output_skip = 0; | |
6b61353c KH |
3955 | } |
3956 | #endif | |
f3d9532b | 3957 | |
a9f2c884 | 3958 | if (inchannel >= 0) |
d0d6b7c5 JB |
3959 | { |
3960 | /* Beware SIGCHLD hereabouts. */ | |
3961 | flush_pending_output (inchannel); | |
68c45bf0 | 3962 | emacs_close (inchannel); |
a9f2c884 | 3963 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3964 | emacs_close (outchannel); |
d0d6b7c5 | 3965 | |
60f0fb11 SM |
3966 | p->infd = -1; |
3967 | p->outfd = -1; | |
e690ca94 KS |
3968 | #ifdef DATAGRAM_SOCKETS |
3969 | if (DATAGRAM_CHAN_P (inchannel)) | |
3970 | { | |
3971 | xfree (datagram_address[inchannel].sa); | |
3972 | datagram_address[inchannel].sa = 0; | |
3973 | datagram_address[inchannel].len = 0; | |
3974 | } | |
3975 | #endif | |
d0d6b7c5 JB |
3976 | chan_process[inchannel] = Qnil; |
3977 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3978 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3979 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3980 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3981 | { | |
3982 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 3983 | FD_CLR (inchannel, &write_mask); |
dd2a17ab | 3984 | if (--num_pending_connects < 0) |
1088b922 | 3985 | emacs_abort (); |
dd2a17ab | 3986 | } |
bad49fc7 | 3987 | #endif |
7d0e672e RS |
3988 | if (inchannel == max_process_desc) |
3989 | { | |
3990 | int i; | |
3991 | /* We just closed the highest-numbered process input descriptor, | |
3992 | so recompute the highest-numbered one now. */ | |
3993 | max_process_desc = 0; | |
3994 | for (i = 0; i < MAXDESC; i++) | |
3995 | if (!NILP (chan_process[i])) | |
3996 | max_process_desc = i; | |
3997 | } | |
d0d6b7c5 JB |
3998 | } |
3999 | } | |
4000 | ||
d0d6b7c5 JB |
4001 | \f |
4002 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 4003 | 0, 4, 0, |
fdb82f93 PJ |
4004 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
4005 | It is read into the process' buffers or given to their filter functions. | |
4006 | Non-nil arg PROCESS means do not return until some output has been received | |
4007 | from PROCESS. | |
5088da42 | 4008 | |
2a7bb882 MR |
4009 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
4010 | and milliseconds to wait; return after that much time whether or not | |
4011 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 4012 | it specifies a fractional number of seconds to wait. |
891bd142 | 4013 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 4014 | |
107ed38d KS |
4015 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
4016 | from PROCESS, suspending reading output from other processes. | |
4017 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 4018 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 4019 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 4020 | { |
d35af63c PE |
4021 | intmax_t secs; |
4022 | int nsecs; | |
d0d6b7c5 | 4023 | |
0748d150 | 4024 | if (! NILP (process)) |
b7826503 | 4025 | CHECK_PROCESS (process); |
107ed38d KS |
4026 | else |
4027 | just_this_one = Qnil; | |
0748d150 | 4028 | |
891bd142 SM |
4029 | if (!NILP (millisec)) |
4030 | { /* Obsolete calling convention using integers rather than floats. */ | |
4031 | CHECK_NUMBER (millisec); | |
4032 | if (NILP (seconds)) | |
4033 | seconds = make_float (XINT (millisec) / 1000.0); | |
4034 | else | |
4035 | { | |
4036 | CHECK_NUMBER (seconds); | |
4037 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
4038 | } | |
4039 | } | |
4040 | ||
d35af63c PE |
4041 | secs = 0; |
4042 | nsecs = -1; | |
4043 | ||
5088da42 | 4044 | if (!NILP (seconds)) |
d0d6b7c5 | 4045 | { |
d35af63c PE |
4046 | if (INTEGERP (seconds)) |
4047 | { | |
4048 | if (0 < XINT (seconds)) | |
4049 | { | |
4050 | secs = XINT (seconds); | |
4051 | nsecs = 0; | |
4052 | } | |
4053 | } | |
4054 | else if (FLOATP (seconds)) | |
4055 | { | |
4056 | if (0 < XFLOAT_DATA (seconds)) | |
4057 | { | |
4058 | EMACS_TIME t = EMACS_TIME_FROM_DOUBLE (XFLOAT_DATA (seconds)); | |
f1dd8073 | 4059 | secs = min (EMACS_SECS (t), WAIT_READING_MAX); |
d35af63c PE |
4060 | nsecs = EMACS_NSECS (t); |
4061 | } | |
4062 | } | |
4063 | else | |
4064 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 4065 | } |
d35af63c PE |
4066 | else if (! NILP (process)) |
4067 | nsecs = 0; | |
d0d6b7c5 JB |
4068 | |
4069 | return | |
d35af63c | 4070 | (wait_reading_process_output (secs, nsecs, 0, 0, |
214d6069 KS |
4071 | Qnil, |
4072 | !NILP (process) ? XPROCESS (process) : NULL, | |
4073 | NILP (just_this_one) ? 0 : | |
4074 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
4075 | ? Qt : Qnil); |
4076 | } | |
4077 | ||
e690ca94 KS |
4078 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4079 | ||
4080 | static int connect_counter = 0; | |
4081 | ||
4082 | static void | |
d3da34e0 | 4083 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4084 | { |
4085 | Lisp_Object proc, caller, name, buffer; | |
4086 | Lisp_Object contact, host, service; | |
4087 | struct Lisp_Process *ps= XPROCESS (server); | |
4088 | struct Lisp_Process *p; | |
4089 | int s; | |
4090 | union u_sockaddr { | |
4091 | struct sockaddr sa; | |
4092 | struct sockaddr_in in; | |
e1652a86 KS |
4093 | #ifdef AF_INET6 |
4094 | struct sockaddr_in6 in6; | |
4095 | #endif | |
e690ca94 KS |
4096 | #ifdef HAVE_LOCAL_SOCKETS |
4097 | struct sockaddr_un un; | |
4098 | #endif | |
4099 | } saddr; | |
401bf9b4 | 4100 | socklen_t len = sizeof saddr; |
e690ca94 KS |
4101 | |
4102 | s = accept (channel, &saddr.sa, &len); | |
4103 | ||
4104 | if (s < 0) | |
4105 | { | |
4106 | int code = errno; | |
4107 | ||
4108 | if (code == EAGAIN) | |
4109 | return; | |
4110 | #ifdef EWOULDBLOCK | |
4111 | if (code == EWOULDBLOCK) | |
4112 | return; | |
4113 | #endif | |
4114 | ||
4d2b044c DA |
4115 | if (!NILP (ps->log)) |
4116 | call3 (ps->log, server, Qnil, | |
e690ca94 KS |
4117 | concat3 (build_string ("accept failed with code"), |
4118 | Fnumber_to_string (make_number (code)), | |
4119 | build_string ("\n"))); | |
4120 | return; | |
4121 | } | |
4122 | ||
4123 | connect_counter++; | |
4124 | ||
4125 | /* Setup a new process to handle the connection. */ | |
4126 | ||
4127 | /* Generate a unique identification of the caller, and build contact | |
4128 | information for this process. */ | |
4129 | host = Qt; | |
4130 | service = Qnil; | |
4131 | switch (saddr.sa.sa_family) | |
4132 | { | |
4133 | case AF_INET: | |
4134 | { | |
4135 | Lisp_Object args[5]; | |
4136 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4137 | args[0] = build_string ("%d.%d.%d.%d"); | |
4138 | args[1] = make_number (*ip++); | |
4139 | args[2] = make_number (*ip++); | |
4140 | args[3] = make_number (*ip++); | |
4141 | args[4] = make_number (*ip++); | |
4142 | host = Fformat (5, args); | |
4143 | service = make_number (ntohs (saddr.in.sin_port)); | |
4144 | ||
4145 | args[0] = build_string (" <%s:%d>"); | |
4146 | args[1] = host; | |
4147 | args[2] = service; | |
4148 | caller = Fformat (3, args); | |
4149 | } | |
4150 | break; | |
4151 | ||
e1652a86 KS |
4152 | #ifdef AF_INET6 |
4153 | case AF_INET6: | |
4154 | { | |
4155 | Lisp_Object args[9]; | |
4156 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4157 | int i; | |
4158 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4159 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4160 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4161 | host = Fformat (9, args); |
4162 | service = make_number (ntohs (saddr.in.sin_port)); | |
4163 | ||
4164 | args[0] = build_string (" <[%s]:%d>"); | |
4165 | args[1] = host; | |
4166 | args[2] = service; | |
4167 | caller = Fformat (3, args); | |
4168 | } | |
4169 | break; | |
4170 | #endif | |
4171 | ||
e690ca94 KS |
4172 | #ifdef HAVE_LOCAL_SOCKETS |
4173 | case AF_LOCAL: | |
4174 | #endif | |
4175 | default: | |
4176 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4177 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4178 | break; |
4179 | } | |
4180 | ||
4181 | /* Create a new buffer name for this process if it doesn't have a | |
4182 | filter. The new buffer name is based on the buffer name or | |
4183 | process name of the server process concatenated with the caller | |
4184 | identification. */ | |
4185 | ||
4d2b044c | 4186 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) |
e690ca94 KS |
4187 | buffer = Qnil; |
4188 | else | |
4189 | { | |
4d2b044c | 4190 | buffer = ps->buffer; |
e690ca94 KS |
4191 | if (!NILP (buffer)) |
4192 | buffer = Fbuffer_name (buffer); | |
4193 | else | |
4d2b044c | 4194 | buffer = ps->name; |
e690ca94 KS |
4195 | if (!NILP (buffer)) |
4196 | { | |
4197 | buffer = concat2 (buffer, caller); | |
4198 | buffer = Fget_buffer_create (buffer); | |
4199 | } | |
4200 | } | |
4201 | ||
4202 | /* Generate a unique name for the new server process. Combine the | |
4203 | server process name with the caller identification. */ | |
4204 | ||
4d2b044c | 4205 | name = concat2 (ps->name, caller); |
e690ca94 KS |
4206 | proc = make_process (name); |
4207 | ||
4208 | chan_process[s] = proc; | |
4209 | ||
4210 | #ifdef O_NONBLOCK | |
4211 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4212 | #else | |
4213 | #ifdef O_NDELAY | |
4214 | fcntl (s, F_SETFL, O_NDELAY); | |
4215 | #endif | |
4216 | #endif | |
4217 | ||
4218 | p = XPROCESS (proc); | |
4219 | ||
4220 | /* Build new contact information for this setup. */ | |
4d2b044c | 4221 | contact = Fcopy_sequence (ps->childp); |
e690ca94 KS |
4222 | contact = Fplist_put (contact, QCserver, Qnil); |
4223 | contact = Fplist_put (contact, QChost, host); | |
4224 | if (!NILP (service)) | |
4225 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4226 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4227 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4228 | #ifdef HAVE_GETSOCKNAME | |
4229 | len = sizeof saddr; | |
2185db04 | 4230 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4231 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4232 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4233 | #endif | |
4234 | ||
6a09a33b PE |
4235 | pset_childp (p, contact); |
4236 | pset_plist (p, Fcopy_sequence (ps->plist)); | |
4237 | pset_type (p, Qnetwork); | |
ac4a7584 | 4238 | |
6a09a33b PE |
4239 | pset_buffer (p, buffer); |
4240 | pset_sentinel (p, ps->sentinel); | |
4241 | pset_filter (p, ps->filter); | |
4242 | pset_command (p, Qnil); | |
6bfd98e7 | 4243 | p->pid = 0; |
60f0fb11 SM |
4244 | p->infd = s; |
4245 | p->outfd = s; | |
6a09a33b | 4246 | pset_status (p, Qrun); |
e690ca94 KS |
4247 | |
4248 | /* Client processes for accepted connections are not stopped initially. */ | |
4d2b044c | 4249 | if (!EQ (p->filter, Qt)) |
e690ca94 KS |
4250 | { |
4251 | FD_SET (s, &input_wait_mask); | |
4252 | FD_SET (s, &non_keyboard_wait_mask); | |
4253 | } | |
4254 | ||
4255 | if (s > max_process_desc) | |
4256 | max_process_desc = s; | |
4257 | ||
177c0ea7 | 4258 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4259 | This seems to be the proper thing to do, as the coding system |
4260 | of the new process should reflect the settings at the time the | |
4261 | server socket was opened; not the current settings. */ | |
4262 | ||
6a09a33b PE |
4263 | pset_decode_coding_system (p, ps->decode_coding_system); |
4264 | pset_encode_coding_system (p, ps->encode_coding_system); | |
03f04413 | 4265 | setup_process_coding_systems (proc); |
e690ca94 | 4266 | |
6a09a33b | 4267 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 4268 | p->decoding_carryover = 0; |
6a09a33b | 4269 | pset_encoding_buf (p, empty_unibyte_string); |
e690ca94 KS |
4270 | |
4271 | p->inherit_coding_system_flag | |
60f0fb11 | 4272 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 | 4273 | |
4d2b044c DA |
4274 | if (!NILP (ps->log)) |
4275 | call3 (ps->log, server, proc, | |
e690ca94 KS |
4276 | concat3 (build_string ("accept from "), |
4277 | (STRINGP (host) ? host : build_string ("-")), | |
4278 | build_string ("\n"))); | |
4279 | ||
4d2b044c | 4280 | if (!NILP (p->sentinel)) |
177c0ea7 | 4281 | exec_sentinel (proc, |
e690ca94 KS |
4282 | concat3 (build_string ("open from "), |
4283 | (STRINGP (host) ? host : build_string ("-")), | |
4284 | build_string ("\n"))); | |
4285 | } | |
4286 | ||
d0d6b7c5 JB |
4287 | /* This variable is different from waiting_for_input in keyboard.c. |
4288 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4289 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4290 | for user-input when that process-filter was called. |
4291 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4292 | lisp code is being evalled. |
4293 | This is also used in record_asynch_buffer_change. | |
4294 | For that purpose, this must be 0 | |
214d6069 | 4295 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4296 | static int waiting_for_user_input_p; |
4297 | ||
2beb96f9 | 4298 | static Lisp_Object |
d3da34e0 | 4299 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4300 | { |
4301 | waiting_for_user_input_p = XINT (data); | |
4302 | return Qnil; | |
4303 | } | |
4304 | ||
c573ae8e | 4305 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4306 | static void |
d3da34e0 | 4307 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4308 | { |
4309 | } | |
4310 | ||
d0d6b7c5 JB |
4311 | /* Read and dispose of subprocess output while waiting for timeout to |
4312 | elapse and/or keyboard input to be available. | |
4313 | ||
de6fd4b9 | 4314 | TIME_LIMIT is: |
d35af63c PE |
4315 | timeout in seconds |
4316 | If negative, gobble data immediately available but don't wait for any. | |
d0d6b7c5 | 4317 | |
d35af63c PE |
4318 | NSECS is: |
4319 | an additional duration to wait, measured in nanoseconds | |
4320 | If TIME_LIMIT is zero, then: | |
4321 | If NSECS == 0, there is no limit. | |
d188e26b | 4322 | If NSECS > 0, the timeout consists of NSECS only. |
d35af63c | 4323 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
6e4f3667 | 4324 | |
a0bee46f | 4325 | READ_KBD is: |
d0d6b7c5 JB |
4326 | 0 to ignore keyboard input, or |
4327 | 1 to return when input is available, or | |
84aa3ace | 4328 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4329 | the quit handler, or |
d0d6b7c5 | 4330 | |
de6fd4b9 | 4331 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4332 | output that arrives. |
d0d6b7c5 | 4333 | |
b89a415a KS |
4334 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4335 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4336 | |
b89a415a | 4337 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4338 | process. The return value is true if we read some input from |
b89a415a KS |
4339 | that process. |
4340 | ||
4341 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4342 | (suspending output from other processes). A negative value | |
4343 | means don't run any timers either. | |
4344 | ||
e0f24100 | 4345 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4346 | received input from that process before the timeout elapsed. |
e0f24100 | 4347 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4348 | |
dfcf069d | 4349 | int |
d35af63c | 4350 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
d5a3eaaf AS |
4351 | int do_display, |
4352 | Lisp_Object wait_for_cell, | |
4353 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4354 | { |
41d03b9a | 4355 | register int channel, nfds; |
855448dc | 4356 | SELECT_TYPE Available; |
3fad2ad2 J |
4357 | SELECT_TYPE Writeok; |
4358 | int check_write; | |
bad49fc7 | 4359 | int check_delay, no_avail; |
d0d6b7c5 JB |
4360 | int xerrno; |
4361 | Lisp_Object proc; | |
41d03b9a | 4362 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4363 | int wait_channel = -1; |
d0d6b7c5 | 4364 | int got_some_input = 0; |
d311d28c | 4365 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4366 | |
4367 | FD_ZERO (&Available); | |
3fad2ad2 | 4368 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4369 | |
d35af63c | 4370 | if (time_limit == 0 && nsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
4d2b044c DA |
4371 | && !(CONSP (wait_proc->status) |
4372 | && EQ (XCAR (wait_proc->status), Qexit))) | |
2b0a91e7 SM |
4373 | message ("Blocking call to accept-process-output with quit inhibited!!"); |
4374 | ||
b89a415a KS |
4375 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4376 | if (wait_proc != NULL) | |
60f0fb11 | 4377 | wait_channel = wait_proc->infd; |
84aa3ace | 4378 | |
2beb96f9 KS |
4379 | record_unwind_protect (wait_reading_process_output_unwind, |
4380 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4381 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 | 4382 | |
d35af63c PE |
4383 | if (time_limit < 0) |
4384 | { | |
4385 | time_limit = 0; | |
4386 | nsecs = -1; | |
4387 | } | |
4388 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
4389 | time_limit = TYPE_MAXIMUM (time_t); | |
4390 | ||
d0d6b7c5 JB |
4391 | /* Since we may need to wait several times, |
4392 | compute the absolute time to return at. */ | |
216ee680 | 4393 | if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4394 | { |
e9a9ae03 PE |
4395 | timeout = make_emacs_time (time_limit, nsecs); |
4396 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
d0d6b7c5 JB |
4397 | } |
4398 | ||
d0d6b7c5 JB |
4399 | while (1) |
4400 | { | |
c0239a0b RS |
4401 | int timeout_reduced_for_timers = 0; |
4402 | ||
d0d6b7c5 JB |
4403 | /* If calling from keyboard input, do not quit |
4404 | since we want to return C-g as an input character. | |
4405 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4406 | if (read_kbd >= 0) |
d0d6b7c5 | 4407 | QUIT; |
6b61353c | 4408 | #ifdef SYNC_INPUT |
ef5eb925 | 4409 | else |
c3eff1b0 | 4410 | process_pending_signals (); |
6b61353c | 4411 | #endif |
d0d6b7c5 | 4412 | |
889255b4 | 4413 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4414 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4415 | break; |
4416 | ||
d0d6b7c5 JB |
4417 | /* Compute time from now till when time limit is up */ |
4418 | /* Exit if already run out */ | |
d35af63c | 4419 | if (nsecs < 0) |
d0d6b7c5 | 4420 | { |
216ee680 | 4421 | /* A negative timeout means |
d0d6b7c5 JB |
4422 | gobble output available now |
4423 | but don't wait at all. */ | |
4424 | ||
e9a9ae03 | 4425 | timeout = make_emacs_time (0, 0); |
d0d6b7c5 | 4426 | } |
216ee680 | 4427 | else if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4428 | { |
e9a9ae03 PE |
4429 | EMACS_TIME now = current_emacs_time (); |
4430 | if (EMACS_TIME_LE (end_time, now)) | |
d0d6b7c5 | 4431 | break; |
e9a9ae03 | 4432 | timeout = sub_emacs_time (end_time, now); |
d0d6b7c5 JB |
4433 | } |
4434 | else | |
4435 | { | |
e9a9ae03 | 4436 | timeout = make_emacs_time (100000, 0); |
d0d6b7c5 JB |
4437 | } |
4438 | ||
f854a00b RS |
4439 | /* Normally we run timers here. |
4440 | But not if wait_for_cell; in those cases, | |
4441 | the wait is supposed to be short, | |
4442 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4443 | if (NILP (wait_for_cell) |
b89a415a | 4444 | && just_wait_proc >= 0) |
fb4c3627 | 4445 | { |
c0239a0b | 4446 | EMACS_TIME timer_delay; |
c573ae8e | 4447 | |
9baacf76 | 4448 | do |
c573ae8e | 4449 | { |
9baacf76 | 4450 | int old_timers_run = timers_run; |
c88164fe | 4451 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4452 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4453 | |
f868cd8a | 4454 | timer_delay = timer_check (); |
a2fab450 GM |
4455 | |
4456 | /* If a timer has run, this might have changed buffers | |
4457 | an alike. Make read_key_sequence aware of that. */ | |
4458 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4459 | && (old_buffer != current_buffer |
4460 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4461 | && waiting_for_user_input_p == -1) |
4462 | record_asynch_buffer_change (); | |
177c0ea7 | 4463 | |
9baacf76 GM |
4464 | if (timers_run != old_timers_run && do_display) |
4465 | /* We must retry, since a timer may have requeued itself | |
4466 | and that could alter the time_delay. */ | |
3007ebfb | 4467 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4468 | else |
4469 | break; | |
c573ae8e | 4470 | } |
9baacf76 | 4471 | while (!detect_input_pending ()); |
c573ae8e | 4472 | |
69645afc | 4473 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4474 | if (read_kbd != 0 |
69645afc RS |
4475 | && requeued_events_pending_p ()) |
4476 | break; | |
4477 | ||
216ee680 | 4478 | /* A negative timeout means do not wait at all. */ |
d35af63c | 4479 | if (0 <= nsecs) |
fb4c3627 | 4480 | { |
d35af63c | 4481 | if (EMACS_TIME_VALID_P (timer_delay)) |
c0239a0b | 4482 | { |
d35af63c PE |
4483 | if (EMACS_TIME_LT (timer_delay, timeout)) |
4484 | { | |
4485 | timeout = timer_delay; | |
4486 | timeout_reduced_for_timers = 1; | |
4487 | } | |
4488 | } | |
4489 | else | |
4490 | { | |
4491 | /* This is so a breakpoint can be put here. */ | |
4492 | wait_reading_process_output_1 (); | |
c0239a0b | 4493 | } |
c573ae8e | 4494 | } |
fb4c3627 RS |
4495 | } |
4496 | ||
90ab1a81 JB |
4497 | /* Cause C-g and alarm signals to take immediate action, |
4498 | and cause input available signals to zero out timeout. | |
4499 | ||
4500 | It is important that we do this before checking for process | |
4501 | activity. If we get a SIGCHLD after the explicit checks for | |
4502 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4503 | if (read_kbd < 0) |
90ab1a81 JB |
4504 | set_waiting_for_input (&timeout); |
4505 | ||
6be429b1 JB |
4506 | /* If status of something has changed, and no input is |
4507 | available, notify the user of the change right away. After | |
4508 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4509 | timeout to get our attention. */ |
4510 | if (update_tick != process_tick) | |
6be429b1 | 4511 | { |
bad49fc7 | 4512 | SELECT_TYPE Atemp; |
bad49fc7 | 4513 | SELECT_TYPE Ctemp; |
dd2a17ab | 4514 | |
cb768704 J |
4515 | if (kbd_on_hold_p ()) |
4516 | FD_ZERO (&Atemp); | |
4517 | else | |
4518 | Atemp = input_wait_mask; | |
3fad2ad2 | 4519 | Ctemp = write_mask; |
bad49fc7 | 4520 | |
e9a9ae03 | 4521 | timeout = make_emacs_time (0, 0); |
d35af63c PE |
4522 | if ((pselect (max (max_process_desc, max_input_desc) + 1, |
4523 | &Atemp, | |
bad49fc7 | 4524 | #ifdef NON_BLOCKING_CONNECT |
d35af63c | 4525 | (num_pending_connects > 0 ? &Ctemp : NULL), |
bad49fc7 | 4526 | #else |
d35af63c | 4527 | NULL, |
bad49fc7 | 4528 | #endif |
d35af63c | 4529 | NULL, &timeout, NULL) |
ecd1f654 | 4530 | <= 0)) |
90ab1a81 JB |
4531 | { |
4532 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4533 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4534 | clear_waiting_for_input (); |
ff6daed3 | 4535 | status_notify (NULL); |
e42bdf01 | 4536 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4537 | } |
6be429b1 JB |
4538 | } |
4539 | ||
dd2a17ab | 4540 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4541 | read whatever data has already been received. */ |
6bfd98e7 | 4542 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4543 | update_status (wait_proc); |
6bfd98e7 | 4544 | if (wait_proc |
4d2b044c DA |
4545 | && ! EQ (wait_proc->status, Qrun) |
4546 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4547 | { |
215b45e9 | 4548 | int nread, total_nread = 0; |
7ce63188 | 4549 | |
9aa2a7f4 | 4550 | clear_waiting_for_input (); |
7ce63188 RS |
4551 | XSETPROCESS (proc, wait_proc); |
4552 | ||
4553 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4554 | while (wait_proc->infd >= 0) |
215b45e9 | 4555 | { |
60f0fb11 | 4556 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4557 | |
4558 | if (nread == 0) | |
4559 | break; | |
4560 | ||
63136da6 AS |
4561 | if (0 < nread) |
4562 | { | |
891bd142 SM |
4563 | total_nread += nread; |
4564 | got_some_input = 1; | |
4565 | } | |
215b45e9 RS |
4566 | #ifdef EIO |
4567 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4568 | break; |
e1b37c34 GM |
4569 | #endif |
4570 | #ifdef EAGAIN | |
4571 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4572 | break; |
e1b37c34 GM |
4573 | #endif |
4574 | #ifdef EWOULDBLOCK | |
4575 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4576 | break; |
215b45e9 RS |
4577 | #endif |
4578 | } | |
7ce63188 | 4579 | if (total_nread > 0 && do_display) |
3007ebfb | 4580 | redisplay_preserve_echo_area (10); |
7ce63188 | 4581 | |
9aa2a7f4 JB |
4582 | break; |
4583 | } | |
6be429b1 | 4584 | |
d0d6b7c5 JB |
4585 | /* Wait till there is something to do */ |
4586 | ||
b89a415a | 4587 | if (wait_proc && just_wait_proc) |
107ed38d | 4588 | { |
60f0fb11 | 4589 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4590 | break; |
60f0fb11 | 4591 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4592 | check_delay = 0; |
3fad2ad2 | 4593 | check_write = 0; |
107ed38d KS |
4594 | } |
4595 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4596 | { |
4597 | Available = non_process_wait_mask; | |
bad49fc7 | 4598 | check_delay = 0; |
3fad2ad2 | 4599 | check_write = 0; |
dd2a17ab | 4600 | } |
a69281ff | 4601 | else |
dd2a17ab | 4602 | { |
b89a415a | 4603 | if (! read_kbd) |
dd2a17ab KS |
4604 | Available = non_keyboard_wait_mask; |
4605 | else | |
4606 | Available = input_wait_mask; | |
3fad2ad2 | 4607 | Writeok = write_mask; |
82d6e50b J |
4608 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4609 | check_write = 0; | |
4610 | #else | |
3fad2ad2 | 4611 | check_write = 1; |
82d6e50b | 4612 | #endif |
6b61353c | 4613 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4614 | } |
d0d6b7c5 | 4615 | |
ff11dfa1 | 4616 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4617 | redisplay now, before we start to wait. There is a race |
4618 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4619 | and indicates that a frame is trashed, the select may block |
4620 | displaying a trashed screen. */ | |
5164ee8e | 4621 | if (frame_garbaged && do_display) |
7286affd RS |
4622 | { |
4623 | clear_waiting_for_input (); | |
3007ebfb | 4624 | redisplay_preserve_echo_area (11); |
b89a415a | 4625 | if (read_kbd < 0) |
7efe788e | 4626 | set_waiting_for_input (&timeout); |
7286affd | 4627 | } |
ffd56f97 | 4628 | |
029529ac CY |
4629 | /* Skip the `select' call if input is available and we're |
4630 | waiting for keyboard input or a cell change (which can be | |
4631 | triggered by processing X events). In the latter case, set | |
4632 | nfds to 1 to avoid breaking the loop. */ | |
dd2a17ab | 4633 | no_avail = 0; |
029529ac CY |
4634 | if ((read_kbd || !NILP (wait_for_cell)) |
4635 | && detect_input_pending ()) | |
0a65b032 | 4636 | { |
029529ac | 4637 | nfds = read_kbd ? 0 : 1; |
dd2a17ab | 4638 | no_avail = 1; |
0a65b032 | 4639 | } |
029529ac CY |
4640 | |
4641 | if (!no_avail) | |
dd2a17ab | 4642 | { |
6b61353c KH |
4643 | |
4644 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4645 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4646 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4647 | read_output_delay, and we are not reading output for a |
4648 | specific wait_channel. It is not executed if | |
4649 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4650 | if (process_output_skip && check_delay > 0) |
4651 | { | |
d35af63c PE |
4652 | int nsecs = EMACS_NSECS (timeout); |
4653 | if (EMACS_SECS (timeout) > 0 || nsecs > READ_OUTPUT_DELAY_MAX) | |
4654 | nsecs = READ_OUTPUT_DELAY_MAX; | |
6b61353c KH |
4655 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) |
4656 | { | |
4657 | proc = chan_process[channel]; | |
4658 | if (NILP (proc)) | |
4659 | continue; | |
db853b7a | 4660 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4661 | processes with non-zero read_output_skip. */ |
4662 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4663 | { |
4664 | check_delay--; | |
60f0fb11 | 4665 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4666 | continue; |
4667 | FD_CLR (channel, &Available); | |
60f0fb11 | 4668 | XPROCESS (proc)->read_output_skip = 0; |
d35af63c PE |
4669 | if (XPROCESS (proc)->read_output_delay < nsecs) |
4670 | nsecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4671 | } |
4672 | } | |
e9a9ae03 | 4673 | timeout = make_emacs_time (0, nsecs); |
6b61353c KH |
4674 | process_output_skip = 0; |
4675 | } | |
4676 | #endif | |
0949d2b6 | 4677 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 JD |
4678 | nfds = xg_select |
4679 | #elif defined (HAVE_NS) | |
63136da6 | 4680 | nfds = ns_select |
edfda783 | 4681 | #else |
d35af63c | 4682 | nfds = pselect |
edfda783 | 4683 | #endif |
3fad2ad2 J |
4684 | (max (max_process_desc, max_input_desc) + 1, |
4685 | &Available, | |
4686 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
d35af63c | 4687 | NULL, &timeout, NULL); |
e061a11b TZ |
4688 | |
4689 | #ifdef HAVE_GNUTLS | |
4690 | /* GnuTLS buffers data internally. In lowat mode it leaves | |
4691 | some data in the TCP buffers so that select works, but | |
4692 | with custom pull/push functions we need to check if some | |
4693 | data is available in the buffers manually. */ | |
261b6fd4 LMI |
4694 | if (nfds == 0) |
4695 | { | |
4696 | if (! wait_proc) | |
4697 | { | |
4698 | /* We're not waiting on a specific process, so loop | |
16c1ad08 LMI |
4699 | through all the channels and check for data. |
4700 | This is a workaround needed for some versions of | |
4701 | the gnutls library -- 2.12.14 has been confirmed | |
4702 | to need it. See | |
4703 | http://comments.gmane.org/gmane.emacs.devel/145074 */ | |
261b6fd4 | 4704 | for (channel = 0; channel < MAXDESC; ++channel) |
5b76caa4 PE |
4705 | if (! NILP (chan_process[channel])) |
4706 | { | |
4707 | struct Lisp_Process *p = | |
4708 | XPROCESS (chan_process[channel]); | |
4709 | if (p && p->gnutls_p && p->infd | |
4710 | && ((emacs_gnutls_record_check_pending | |
4711 | (p->gnutls_state)) | |
4712 | > 0)) | |
4713 | { | |
4714 | nfds++; | |
4715 | FD_SET (p->infd, &Available); | |
4716 | } | |
4717 | } | |
261b6fd4 LMI |
4718 | } |
4719 | else | |
4720 | { | |
4721 | /* Check this specific channel. */ | |
5b76caa4 | 4722 | if (wait_proc->gnutls_p /* Check for valid process. */ |
261b6fd4 | 4723 | /* Do we have pending data? */ |
5b76caa4 PE |
4724 | && ((emacs_gnutls_record_check_pending |
4725 | (wait_proc->gnutls_state)) | |
4726 | > 0)) | |
261b6fd4 LMI |
4727 | { |
4728 | nfds = 1; | |
4729 | /* Set to Available. */ | |
4730 | FD_SET (wait_proc->infd, &Available); | |
4731 | } | |
4732 | } | |
4733 | } | |
e061a11b | 4734 | #endif |
dd2a17ab | 4735 | } |
6720a7fb | 4736 | |
d0d6b7c5 JB |
4737 | xerrno = errno; |
4738 | ||
4739 | /* Make C-g and alarm signals set flags again */ | |
4740 | clear_waiting_for_input (); | |
4741 | ||
4742 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4743 | do_pending_window_change (0); |
d0d6b7c5 | 4744 | |
d35af63c | 4745 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
216ee680 | 4746 | /* We waited the full specified time, so return now. */ |
d0d6b7c5 JB |
4747 | break; |
4748 | if (nfds < 0) | |
4749 | { | |
4750 | if (xerrno == EINTR) | |
dd2a17ab | 4751 | no_avail = 1; |
d0d6b7c5 JB |
4752 | else if (xerrno == EBADF) |
4753 | { | |
4754 | #ifdef AIX | |
4755 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4756 | the child's closure of the pts gives the parent a SIGHUP, and | |
4757 | the ptc file descriptor is automatically closed, | |
4758 | yielding EBADF here or at select() call above. | |
4759 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4760 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4761 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4762 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 | 4763 | #else |
1088b922 | 4764 | emacs_abort (); |
d0d6b7c5 JB |
4765 | #endif |
4766 | } | |
4767 | else | |
68c45bf0 | 4768 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4769 | } |
dd2a17ab KS |
4770 | |
4771 | if (no_avail) | |
4772 | { | |
4773 | FD_ZERO (&Available); | |
3fad2ad2 | 4774 | check_write = 0; |
dd2a17ab KS |
4775 | } |
4776 | ||
5d5beb62 RS |
4777 | #if 0 /* When polling is used, interrupt_input is 0, |
4778 | so get_input_pending should read the input. | |
4779 | So this should not be needed. */ | |
4780 | /* If we are using polling for input, | |
4781 | and we see input available, make it get read now. | |
4782 | Otherwise it might not actually get read for a second. | |
214d6069 | 4783 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4784 | it might never get read at all if we don't spend much time |
214d6069 | 4785 | outside of wait_reading_process_output. */ |
b89a415a | 4786 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4787 | && keyboard_bit_set (&Available) |
4788 | && input_polling_used ()) | |
4789 | kill (getpid (), SIGALRM); | |
4790 | #endif | |
4791 | ||
d0d6b7c5 JB |
4792 | /* Check for keyboard input */ |
4793 | /* If there is any, return immediately | |
4794 | to give it higher priority than subprocesses */ | |
4795 | ||
b89a415a | 4796 | if (read_kbd != 0) |
6ed6233b | 4797 | { |
a2fab450 | 4798 | int old_timers_run = timers_run; |
c88164fe | 4799 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4800 | Lisp_Object old_window = selected_window; |
a2fab450 | 4801 | int leave = 0; |
177c0ea7 | 4802 | |
5d6c2aa3 | 4803 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4804 | { |
4805 | swallow_events (do_display); | |
4806 | if (detect_input_pending_run_timers (do_display)) | |
4807 | leave = 1; | |
4808 | } | |
6ed6233b | 4809 | |
a2fab450 GM |
4810 | /* If a timer has run, this might have changed buffers |
4811 | an alike. Make read_key_sequence aware of that. */ | |
4812 | if (timers_run != old_timers_run | |
c88164fe | 4813 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4814 | && (old_buffer != current_buffer |
4815 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4816 | record_asynch_buffer_change (); |
4817 | ||
4818 | if (leave) | |
4819 | break; | |
177c0ea7 JB |
4820 | } |
4821 | ||
69645afc | 4822 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4823 | if (read_kbd != 0 |
69645afc RS |
4824 | && requeued_events_pending_p ()) |
4825 | break; | |
4826 | ||
77e1b3d4 RS |
4827 | /* If we are not checking for keyboard input now, |
4828 | do process events (but don't run any timers). | |
4829 | This is so that X events will be processed. | |
0c9960e9 | 4830 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4831 | That would causes delays in pasting selections, for example. |
4832 | ||
4833 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4834 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4835 | { |
4836 | swallow_events (do_display); | |
0c9960e9 | 4837 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4838 | if (detect_input_pending ()) |
4839 | break; | |
5d5beb62 | 4840 | #endif |
0c9960e9 | 4841 | } |
f854a00b | 4842 | |
84aa3ace | 4843 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4844 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4845 | break; |
4846 | ||
4746118a | 4847 | #ifdef SIGIO |
5d5beb62 | 4848 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4849 | go read it. This can happen with X on BSD after logging out. |
4850 | In that case, there really is no input and no SIGIO, | |
4851 | but select says there is input. */ | |
4852 | ||
b89a415a | 4853 | if (read_kbd && interrupt_input |
2601f59e | 4854 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4855 | kill (getpid (), SIGIO); |
4746118a | 4856 | #endif |
d0d6b7c5 | 4857 | |
d0d6b7c5 JB |
4858 | if (! wait_proc) |
4859 | got_some_input |= nfds > 0; | |
4860 | ||
32676c08 JB |
4861 | /* If checking input just got us a size-change event from X, |
4862 | obey it now if we should. */ | |
b89a415a | 4863 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4864 | do_pending_window_change (0); |
32676c08 | 4865 | |
a9f2c884 | 4866 | /* Check for data from a process. */ |
dd2a17ab KS |
4867 | if (no_avail || nfds == 0) |
4868 | continue; | |
4869 | ||
3fad2ad2 J |
4870 | for (channel = 0; channel <= max_input_desc; ++channel) |
4871 | { | |
4872 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
de1339b0 PE |
4873 | if (d->func |
4874 | && ((d->condition & FOR_READ | |
4875 | && FD_ISSET (channel, &Available)) | |
4876 | || (d->condition & FOR_WRITE | |
4877 | && FD_ISSET (channel, &write_mask)))) | |
4878 | d->func (channel, d->data); | |
4879 | } | |
3fad2ad2 | 4880 | |
a69281ff | 4881 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4882 | { |
a69281ff | 4883 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4884 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4885 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4886 | { |
4887 | int nread; | |
4888 | ||
4889 | /* If waiting for this channel, arrange to return as | |
4890 | soon as no more input to be processed. No more | |
4891 | waiting. */ | |
4892 | if (wait_channel == channel) | |
4893 | { | |
a9f2c884 | 4894 | wait_channel = -1; |
d35af63c | 4895 | nsecs = -1; |
d0d6b7c5 JB |
4896 | got_some_input = 1; |
4897 | } | |
4898 | proc = chan_process[channel]; | |
4899 | if (NILP (proc)) | |
4900 | continue; | |
4901 | ||
e690ca94 | 4902 | /* If this is a server stream socket, accept connection. */ |
4d2b044c | 4903 | if (EQ (XPROCESS (proc)->status, Qlisten)) |
e690ca94 KS |
4904 | { |
4905 | server_accept_connection (proc, channel); | |
4906 | continue; | |
4907 | } | |
4908 | ||
d0d6b7c5 JB |
4909 | /* Read data from the process, starting with our |
4910 | buffered-ahead character if we have one. */ | |
4911 | ||
4912 | nread = read_process_output (proc, channel); | |
4913 | if (nread > 0) | |
4914 | { | |
4915 | /* Since read_process_output can run a filter, | |
4916 | which can call accept-process-output, | |
4917 | don't try to read from any other processes | |
4918 | before doing the select again. */ | |
4919 | FD_ZERO (&Available); | |
4920 | ||
4921 | if (do_display) | |
3007ebfb | 4922 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4923 | } |
4924 | #ifdef EWOULDBLOCK | |
4925 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4926 | ; | |
0b75e9a4 | 4927 | #endif |
89d7280d RS |
4928 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4929 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4930 | #ifdef O_NONBLOCK |
4931 | else if (nread == -1 && errno == EAGAIN) | |
4932 | ; | |
4933 | #else | |
4934 | #ifdef O_NDELAY | |
4935 | else if (nread == -1 && errno == EAGAIN) | |
4936 | ; | |
4937 | /* Note that we cannot distinguish between no input | |
4938 | available now and a closed pipe. | |
4939 | With luck, a closed pipe will be accompanied by | |
4940 | subprocess termination and SIGCHLD. */ | |
d888760c | 4941 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4942 | ; |
4740825c KS |
4943 | #endif /* O_NDELAY */ |
4944 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4945 | #ifdef HAVE_PTYS |
4946 | /* On some OSs with ptys, when the process on one end of | |
4947 | a pty exits, the other end gets an error reading with | |
4948 | errno = EIO instead of getting an EOF (0 bytes read). | |
4949 | Therefore, if we get an error reading and errno = | |
4950 | EIO, just continue, because the child process has | |
4951 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4952 | get a SIGCHLD). |
4953 | ||
4954 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4955 | got lost. So raise the signal again just in case. |
5651af6d | 4956 | It can't hurt. */ |
d0d6b7c5 | 4957 | else if (nread == -1 && errno == EIO) |
4740825c | 4958 | { |
f30d612a CY |
4959 | struct Lisp_Process *p = XPROCESS (proc); |
4960 | ||
4961 | /* Clear the descriptor now, so we only raise the | |
4962 | signal once. */ | |
4963 | FD_CLR (channel, &input_wait_mask); | |
4964 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4965 | ||
4966 | if (p->pid == -2) | |
4967 | { | |
20ef56db PE |
4968 | /* If the EIO occurs on a pty, the SIGCHLD handler's |
4969 | waitpid call will not find the process object to | |
f30d612a CY |
4970 | delete. Do it here. */ |
4971 | p->tick = ++process_tick; | |
6a09a33b | 4972 | pset_status (p, Qfailed); |
f30d612a CY |
4973 | } |
4974 | else | |
4975 | kill (getpid (), SIGCHLD); | |
4740825c KS |
4976 | } |
4977 | #endif /* HAVE_PTYS */ | |
5063c0e1 TN |
4978 | /* If we can detect process termination, don't consider the |
4979 | process gone just because its pipe is closed. */ | |
d0d6b7c5 | 4980 | #ifdef SIGCHLD |
d888760c | 4981 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4982 | ; |
4983 | #endif | |
4984 | else | |
4985 | { | |
4986 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4987 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4988 | deactivate_process (proc); |
6bfd98e7 | 4989 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 | 4990 | update_status (XPROCESS (proc)); |
4d2b044c | 4991 | if (EQ (XPROCESS (proc)->status, Qrun)) |
6a09a33b PE |
4992 | pset_status (XPROCESS (proc), |
4993 | list2 (Qexit, make_number (256))); | |
d0d6b7c5 JB |
4994 | } |
4995 | } | |
177c0ea7 | 4996 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 4997 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 4998 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
4999 | { |
5000 | struct Lisp_Process *p; | |
dd2a17ab KS |
5001 | |
5002 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 5003 | FD_CLR (channel, &write_mask); |
dd2a17ab | 5004 | if (--num_pending_connects < 0) |
1088b922 | 5005 | emacs_abort (); |
dd2a17ab KS |
5006 | |
5007 | proc = chan_process[channel]; | |
5008 | if (NILP (proc)) | |
5009 | continue; | |
5010 | ||
5011 | p = XPROCESS (proc); | |
5012 | ||
5013 | #ifdef GNU_LINUX | |
5014 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 5015 | So only use it on systems where it is known to work. */ |
dd2a17ab | 5016 | { |
401bf9b4 | 5017 | socklen_t xlen = sizeof (xerrno); |
ed3751c8 | 5018 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
dd2a17ab KS |
5019 | xerrno = errno; |
5020 | } | |
5021 | #else | |
44c887be PJ |
5022 | { |
5023 | struct sockaddr pname; | |
ed3751c8 | 5024 | int pnamelen = sizeof (pname); |
44c887be PJ |
5025 | |
5026 | /* If connection failed, getpeername will fail. */ | |
5027 | xerrno = 0; | |
ed3751c8 | 5028 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
5029 | { |
5030 | /* Obtain connect failure code through error slippage. */ | |
5031 | char dummy; | |
dd2a17ab | 5032 | xerrno = errno; |
ed3751c8 | 5033 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
5034 | xerrno = errno; |
5035 | } | |
5036 | } | |
dd2a17ab KS |
5037 | #endif |
5038 | if (xerrno) | |
5039 | { | |
60f0fb11 | 5040 | p->tick = ++process_tick; |
6a09a33b | 5041 | pset_status (p, list2 (Qfailed, make_number (xerrno))); |
dd2a17ab KS |
5042 | deactivate_process (proc); |
5043 | } | |
5044 | else | |
5045 | { | |
6a09a33b | 5046 | pset_status (p, Qrun); |
dd2a17ab KS |
5047 | /* Execute the sentinel here. If we had relied on |
5048 | status_notify to do it later, it will read input | |
5049 | from the process before calling the sentinel. */ | |
5050 | exec_sentinel (proc, build_string ("open\n")); | |
4d2b044c | 5051 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 5052 | { |
60f0fb11 SM |
5053 | FD_SET (p->infd, &input_wait_mask); |
5054 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
5055 | } |
5056 | } | |
5057 | } | |
5058 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
5059 | } /* end for each file descriptor */ |
5060 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 5061 | |
2beb96f9 | 5062 | unbind_to (count, Qnil); |
d430ee71 | 5063 | |
ffd56f97 JB |
5064 | /* If calling from keyboard input, do not quit |
5065 | since we want to return C-g as an input character. | |
5066 | Otherwise, do pending quit if requested. */ | |
b89a415a | 5067 | if (read_kbd >= 0) |
ffd56f97 JB |
5068 | { |
5069 | /* Prevent input_pending from remaining set if we quit. */ | |
5070 | clear_input_pending (); | |
5071 | QUIT; | |
5072 | } | |
efa2a55c | 5073 | |
d0d6b7c5 JB |
5074 | return got_some_input; |
5075 | } | |
5076 | \f | |
3b9a3dfa RS |
5077 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
5078 | ||
5079 | static Lisp_Object | |
d3da34e0 | 5080 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5081 | { |
70949dac | 5082 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5083 | } |
5084 | ||
5085 | static Lisp_Object | |
b93aacde | 5086 | read_process_output_error_handler (Lisp_Object error_val) |
3b9a3dfa | 5087 | { |
b93aacde | 5088 | cmd_error_internal (error_val, "error in process filter: "); |
3b9a3dfa RS |
5089 | Vinhibit_quit = Qt; |
5090 | update_echo_area (); | |
833ba342 | 5091 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5092 | return Qt; |
3b9a3dfa RS |
5093 | } |
5094 | ||
d0d6b7c5 JB |
5095 | /* Read pending output from the process channel, |
5096 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5097 | Yield number of decoded characters read. |
d0d6b7c5 | 5098 | |
116c423c | 5099 | This function reads at most 4096 characters. |
d0d6b7c5 | 5100 | If you want to read all available subprocess output, |
0fa1789e KH |
5101 | you must call it repeatedly until it returns zero. |
5102 | ||
5103 | The characters read are decoded according to PROC's coding-system | |
5104 | for decoding. */ | |
d0d6b7c5 | 5105 | |
ff6daed3 | 5106 | static int |
d3da34e0 | 5107 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5108 | { |
368f4090 | 5109 | register ssize_t nbytes; |
d0d6b7c5 | 5110 | char *chars; |
d0d6b7c5 | 5111 | register Lisp_Object outstream; |
d0d6b7c5 | 5112 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 5113 | register ptrdiff_t opoint; |
c7580538 | 5114 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5115 | int carryover = p->decoding_carryover; |
116c423c | 5116 | int readmax = 4096; |
d311d28c | 5117 | ptrdiff_t count = SPECPDL_INDEX (); |
3a4fa2f2 | 5118 | Lisp_Object odeactivate; |
d0d6b7c5 | 5119 | |
38182d90 | 5120 | chars = alloca (carryover + readmax); |
e7fbaa65 KH |
5121 | if (carryover) |
5122 | /* See the comment above. */ | |
4d2b044c | 5123 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5124 | |
e690ca94 KS |
5125 | #ifdef DATAGRAM_SOCKETS |
5126 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5127 | if (DATAGRAM_CHAN_P (channel)) | |
5128 | { | |
401bf9b4 | 5129 | socklen_t len = datagram_address[channel].len; |
39b1da20 | 5130 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5131 | 0, datagram_address[channel].sa, &len); |
5132 | } | |
5133 | else | |
5134 | #endif | |
6b61353c | 5135 | { |
82eaa333 PE |
5136 | int buffered = 0 <= proc_buffered_char[channel]; |
5137 | if (buffered) | |
5138 | { | |
5139 | chars[carryover] = proc_buffered_char[channel]; | |
5140 | proc_buffered_char[channel] = -1; | |
5141 | } | |
8af55556 | 5142 | #ifdef HAVE_GNUTLS |
959ad23f AS |
5143 | if (p->gnutls_p) |
5144 | nbytes = emacs_gnutls_read (p, chars + carryover + buffered, | |
82eaa333 | 5145 | readmax - buffered); |
8af55556 TZ |
5146 | else |
5147 | #endif | |
82eaa333 PE |
5148 | nbytes = emacs_read (channel, chars + carryover + buffered, |
5149 | readmax - buffered); | |
6b61353c | 5150 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5151 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5152 | { |
60f0fb11 | 5153 | int delay = p->read_output_delay; |
6b61353c KH |
5154 | if (nbytes < 256) |
5155 | { | |
5156 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5157 | { | |
5158 | if (delay == 0) | |
5159 | process_output_delay_count++; | |
5160 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5161 | } | |
5162 | } | |
82eaa333 | 5163 | else if (delay > 0 && nbytes == readmax - buffered) |
6b61353c KH |
5164 | { |
5165 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5166 | if (delay == 0) | |
5167 | process_output_delay_count--; | |
5168 | } | |
60f0fb11 | 5169 | p->read_output_delay = delay; |
6b61353c KH |
5170 | if (delay) |
5171 | { | |
60f0fb11 | 5172 | p->read_output_skip = 1; |
6b61353c KH |
5173 | process_output_skip = 1; |
5174 | } | |
5175 | } | |
5176 | #endif | |
fe07cdfa PE |
5177 | nbytes += buffered; |
5178 | nbytes += buffered && nbytes <= 0; | |
d0d6b7c5 | 5179 | } |
d0d6b7c5 | 5180 | |
60f0fb11 | 5181 | p->decoding_carryover = 0; |
ca65341e | 5182 | |
ed7a4b2d | 5183 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5184 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5185 | if (nbytes <= 0) |
5186 | { | |
5187 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5188 | return nbytes; | |
5189 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5190 | } | |
d0d6b7c5 | 5191 | |
1d2fc612 | 5192 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5193 | nbytes += carryover; |
0fa1789e | 5194 | |
3a4fa2f2 SM |
5195 | odeactivate = Vdeactivate_mark; |
5196 | /* There's no good reason to let process filters change the current | |
5197 | buffer, and many callers of accept-process-output, sit-for, and | |
5198 | friends don't expect current-buffer to be changed from under them. */ | |
66322887 | 5199 | record_unwind_current_buffer (); |
3a4fa2f2 | 5200 | |
1d2fc612 | 5201 | /* Read and dispose of the process output. */ |
4d2b044c | 5202 | outstream = p->filter; |
d0d6b7c5 JB |
5203 | if (!NILP (outstream)) |
5204 | { | |
1d2fc612 | 5205 | Lisp_Object text; |
1882aa38 | 5206 | bool outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5207 | int waiting = waiting_for_user_input_p; |
30c78175 | 5208 | |
dfc21838 RS |
5209 | /* No need to gcpro these, because all we do with them later |
5210 | is test them for EQness, and none of them should be a string. */ | |
aba7731a PE |
5211 | #if 0 |
5212 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 5213 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 5214 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 5215 | #endif |
30c78175 | 5216 | |
3a4fa2f2 SM |
5217 | /* We inhibit quit here instead of just catching it so that |
5218 | hitting ^G when a filter happens to be running won't screw | |
5219 | it up. */ | |
d0d6b7c5 | 5220 | specbind (Qinhibit_quit, Qt); |
6545aada | 5221 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5222 | |
4da2f5be RS |
5223 | /* In case we get recursively called, |
5224 | and we already saved the match data nonrecursively, | |
5225 | save the same match data in safely recursive fashion. */ | |
5226 | if (outer_running_asynch_code) | |
5227 | { | |
5228 | Lisp_Object tem; | |
5229 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5230 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5231 | restore_search_regs (); | |
5232 | record_unwind_save_match_data (); | |
5233 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5234 | } |
5235 | ||
5236 | /* For speed, if a search happens within this code, | |
5237 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5238 | running_asynch_code = 1; |
4da2f5be | 5239 | |
400a67ff | 5240 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 | 5241 | text = coding->dst_object; |
5bbf78c1 | 5242 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5243 | /* A new coding system might be found. */ |
4d2b044c | 5244 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5245 | { |
6a09a33b | 5246 | pset_decode_coding_system (p, Vlast_coding_system_used); |
ed7a4b2d KH |
5247 | |
5248 | /* Don't call setup_coding_system for | |
5249 | proc_decode_coding_system[channel] here. It is done in | |
5250 | detect_coding called via decode_coding above. */ | |
5251 | ||
5252 | /* If a coding system for encoding is not yet decided, we set | |
5253 | it as the same as coding-system for decoding. | |
5254 | ||
5255 | But, before doing that we must check if | |
5256 | proc_encode_coding_system[p->outfd] surely points to a | |
5257 | valid memory because p->outfd will be changed once EOF is | |
5258 | sent to the process. */ | |
4d2b044c | 5259 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5260 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5261 | { |
6a09a33b PE |
5262 | pset_encode_coding_system |
5263 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
4d2b044c | 5264 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5265 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5266 | } |
5267 | } | |
51c6067d | 5268 | |
dd8c7a53 KH |
5269 | if (coding->carryover_bytes > 0) |
5270 | { | |
4d2b044c | 5271 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
6a09a33b | 5272 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5273 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5274 | coding->carryover_bytes); |
8c406a9b | 5275 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5276 | } |
e430e5ba | 5277 | if (SBYTES (text) > 0) |
963b492b SM |
5278 | /* FIXME: It's wrong to wrap or not based on debug-on-error, and |
5279 | sometimes it's simply wrong to wrap (e.g. when called from | |
5280 | accept-process-output). */ | |
dd97db06 KH |
5281 | internal_condition_case_1 (read_process_output_call, |
5282 | Fcons (outstream, | |
5283 | Fcons (proc, Fcons (text, Qnil))), | |
5284 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5285 | read_process_output_error_handler); | |
4da2f5be RS |
5286 | |
5287 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5288 | restore_search_regs (); |
4da2f5be | 5289 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5290 | |
bbce7d72 RS |
5291 | /* Restore waiting_for_user_input_p as it was |
5292 | when we were called, in case the filter clobbered it. */ | |
5293 | waiting_for_user_input_p = waiting; | |
5294 | ||
7973cfa8 RS |
5295 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5296 | because we might have changed minor modes or other things | |
5297 | that affect key bindings. */ | |
dfc21838 RS |
5298 | if (! EQ (Fcurrent_buffer (), obuffer) |
5299 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5300 | #endif |
927e08be RS |
5301 | /* But do it only if the caller is actually going to read events. |
5302 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5303 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5304 | if (waiting_for_user_input_p == -1) |
5305 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5306 | } |
5307 | ||
5308 | /* If no filter, write into buffer if it isn't dead. */ | |
4d2b044c | 5309 | else if (!NILP (p->buffer) && !NILP (BVAR (XBUFFER (p->buffer), name))) |
d0d6b7c5 | 5310 | { |
b0310da4 | 5311 | Lisp_Object old_read_only; |
d311d28c PE |
5312 | ptrdiff_t old_begv, old_zv; |
5313 | ptrdiff_t old_begv_byte, old_zv_byte; | |
5314 | ptrdiff_t before, before_byte; | |
5315 | ptrdiff_t opoint_byte; | |
ed7a4b2d | 5316 | Lisp_Object text; |
926b7e5e | 5317 | struct buffer *b; |
30c78175 | 5318 | |
4d2b044c | 5319 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5320 | opoint = PT; |
d8a2934e | 5321 | opoint_byte = PT_BYTE; |
4b4deea2 | 5322 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5323 | old_begv = BEGV; |
5324 | old_zv = ZV; | |
d8a2934e RS |
5325 | old_begv_byte = BEGV_BYTE; |
5326 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5327 | |
39eb03f1 | 5328 | bset_read_only (current_buffer, Qnil); |
d0d6b7c5 JB |
5329 | |
5330 | /* Insert new output into buffer | |
5331 | at the current end-of-output marker, | |
5332 | thus preserving logical ordering of input and output. */ | |
4d2b044c | 5333 | if (XMARKER (p->mark)->buffer) |
3193acd2 | 5334 | SET_PT_BOTH (clip_to_bounds (BEGV, |
4d2b044c | 5335 | marker_position (p->mark), ZV), |
3193acd2 | 5336 | clip_to_bounds (BEGV_BYTE, |
4d2b044c | 5337 | marker_byte_position (p->mark), |
d8a2934e | 5338 | ZV_BYTE)); |
d0d6b7c5 | 5339 | else |
d8a2934e | 5340 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5341 | before = PT; |
d8a2934e | 5342 | before_byte = PT_BYTE; |
b0310da4 JB |
5343 | |
5344 | /* If the output marker is outside of the visible region, save | |
5345 | the restriction and widen. */ | |
6ec8bbd2 | 5346 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5347 | Fwiden (); |
5348 | ||
400a67ff | 5349 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 KH |
5350 | text = coding->dst_object; |
5351 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5352 | /* A new coding system might be found. See the comment in the |
5353 | similar code in the previous `if' block. */ | |
4d2b044c | 5354 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5355 | { |
6a09a33b | 5356 | pset_decode_coding_system (p, Vlast_coding_system_used); |
4d2b044c | 5357 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5358 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5359 | { |
6a09a33b PE |
5360 | pset_encode_coding_system |
5361 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
4d2b044c | 5362 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5363 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5364 | } |
5365 | } | |
dd8c7a53 KH |
5366 | if (coding->carryover_bytes > 0) |
5367 | { | |
4d2b044c | 5368 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
6a09a33b | 5369 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5370 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5371 | coding->carryover_bytes); |
8c406a9b | 5372 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5373 | } |
d69864bf | 5374 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5375 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5376 | != ! STRING_MULTIBYTE (text)) |
5377 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5378 | ? Fstring_as_unibyte (text) |
03f04413 | 5379 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5380 | /* Insert before markers in case we are inserting where |
5381 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5382 | insert_from_string_before_markers (text, 0, 0, |
5383 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5384 | |
926b7e5e GM |
5385 | /* Make sure the process marker's position is valid when the |
5386 | process buffer is changed in the signal_after_change above. | |
5387 | W3 is known to do that. */ | |
4d2b044c DA |
5388 | if (BUFFERP (p->buffer) |
5389 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5390 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
926b7e5e | 5391 | else |
4d2b044c | 5392 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
b0310da4 | 5393 | |
d0d6b7c5 JB |
5394 | update_mode_lines++; |
5395 | ||
12ca5cdf RS |
5396 | /* Make sure opoint and the old restrictions |
5397 | float ahead of any new text just as point would. */ | |
5398 | if (opoint >= before) | |
d8a2934e RS |
5399 | { |
5400 | opoint += PT - before; | |
5401 | opoint_byte += PT_BYTE - before_byte; | |
5402 | } | |
12ca5cdf | 5403 | if (old_begv > before) |
d8a2934e RS |
5404 | { |
5405 | old_begv += PT - before; | |
5406 | old_begv_byte += PT_BYTE - before_byte; | |
5407 | } | |
12ca5cdf | 5408 | if (old_zv >= before) |
d8a2934e RS |
5409 | { |
5410 | old_zv += PT - before; | |
5411 | old_zv_byte += PT_BYTE - before_byte; | |
5412 | } | |
12ca5cdf | 5413 | |
b0310da4 | 5414 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5415 | if (old_begv != BEGV || old_zv != ZV) |
5416 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5417 | |
30c78175 | 5418 | |
39eb03f1 | 5419 | bset_read_only (current_buffer, old_read_only); |
d8a2934e | 5420 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5421 | } |
3a4fa2f2 SM |
5422 | /* Handling the process output should not deactivate the mark. */ |
5423 | Vdeactivate_mark = odeactivate; | |
5424 | ||
5425 | unbind_to (count, Qnil); | |
1d2fc612 | 5426 | return nbytes; |
d0d6b7c5 | 5427 | } |
d0d6b7c5 JB |
5428 | \f |
5429 | /* Sending data to subprocess */ | |
5430 | ||
40ccffa6 PE |
5431 | static jmp_buf send_process_frame; |
5432 | static Lisp_Object process_sent_to; | |
d0d6b7c5 | 5433 | |
20ef56db PE |
5434 | static _Noreturn void |
5435 | handle_pipe_signal (int sig) | |
d0d6b7c5 | 5436 | { |
c8f44005 | 5437 | sigunblock (sigmask (SIGPIPE)); |
af26b72c | 5438 | _longjmp (send_process_frame, 1); |
d0d6b7c5 JB |
5439 | } |
5440 | ||
20ef56db PE |
5441 | static void |
5442 | deliver_pipe_signal (int sig) | |
5443 | { | |
5444 | handle_on_main_thread (sig, handle_pipe_signal); | |
5445 | } | |
5446 | ||
20ca2e94 TN |
5447 | /* In send_process, when a write fails temporarily, |
5448 | wait_reading_process_output is called. It may execute user code, | |
5449 | e.g. timers, that attempts to write new data to the same process. | |
5450 | We must ensure that data is sent in the right order, and not | |
5451 | interspersed half-completed with other writes (Bug#10815). This is | |
5452 | handled by the write_queue element of struct process. It is a list | |
5453 | with each entry having the form | |
5454 | ||
5455 | (string . (offset . length)) | |
5456 | ||
5457 | where STRING is a lisp string, OFFSET is the offset into the | |
5458 | string's byte sequence from which we should begin to send, and | |
5459 | LENGTH is the number of bytes left to send. */ | |
5460 | ||
5461 | /* Create a new entry in write_queue. | |
5462 | INPUT_OBJ should be a buffer, string Qt, or Qnil. | |
5463 | BUF is a pointer to the string sequence of the input_obj or a C | |
5464 | string in case of Qt or Qnil. */ | |
5465 | ||
5466 | static void | |
5467 | write_queue_push (struct Lisp_Process *p, Lisp_Object input_obj, | |
7ea2b339 | 5468 | const char *buf, ptrdiff_t len, int front) |
20ca2e94 | 5469 | { |
7ea2b339 | 5470 | ptrdiff_t offset; |
20ca2e94 TN |
5471 | Lisp_Object entry, obj; |
5472 | ||
5473 | if (STRINGP (input_obj)) | |
5474 | { | |
5475 | offset = buf - SSDATA (input_obj); | |
5476 | obj = input_obj; | |
5477 | } | |
5478 | else | |
5479 | { | |
5480 | offset = 0; | |
5481 | obj = make_unibyte_string (buf, len); | |
5482 | } | |
5483 | ||
5484 | entry = Fcons (obj, Fcons (make_number (offset), make_number (len))); | |
5485 | ||
5486 | if (front) | |
6a09a33b | 5487 | pset_write_queue (p, Fcons (entry, p->write_queue)); |
20ca2e94 | 5488 | else |
6a09a33b | 5489 | pset_write_queue (p, nconc2 (p->write_queue, Fcons (entry, Qnil))); |
20ca2e94 TN |
5490 | } |
5491 | ||
5492 | /* Remove the first element in the write_queue of process P, put its | |
5493 | contents in OBJ, BUF and LEN, and return non-zero. If the | |
5494 | write_queue is empty, return zero. */ | |
5495 | ||
5496 | static int | |
5497 | write_queue_pop (struct Lisp_Process *p, Lisp_Object *obj, | |
7ea2b339 | 5498 | const char **buf, ptrdiff_t *len) |
20ca2e94 TN |
5499 | { |
5500 | Lisp_Object entry, offset_length; | |
7ea2b339 | 5501 | ptrdiff_t offset; |
20ca2e94 | 5502 | |
4d2b044c | 5503 | if (NILP (p->write_queue)) |
20ca2e94 TN |
5504 | return 0; |
5505 | ||
4d2b044c | 5506 | entry = XCAR (p->write_queue); |
6a09a33b | 5507 | pset_write_queue (p, XCDR (p->write_queue)); |
20ca2e94 TN |
5508 | |
5509 | *obj = XCAR (entry); | |
5510 | offset_length = XCDR (entry); | |
5511 | ||
5512 | *len = XINT (XCDR (offset_length)); | |
5513 | offset = XINT (XCAR (offset_length)); | |
7ea2b339 | 5514 | *buf = SSDATA (*obj) + offset; |
20ca2e94 TN |
5515 | |
5516 | return 1; | |
5517 | } | |
5518 | ||
4556b700 RS |
5519 | /* Send some data to process PROC. |
5520 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5521 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5522 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5523 | |
a92e4183 KH |
5524 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5525 | for encoding before it is sent. | |
1fb0098c GM |
5526 | |
5527 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5528 | |
ff6daed3 | 5529 | static void |
400a67ff | 5530 | send_process (volatile Lisp_Object proc, const char *volatile buf, |
d311d28c | 5531 | volatile ptrdiff_t len, volatile Lisp_Object object) |
d0d6b7c5 | 5532 | { |
ecd1f654 | 5533 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5534 | struct Lisp_Process *p = XPROCESS (proc); |
368f4090 | 5535 | ssize_t rv; |
0fa1789e | 5536 | struct coding_system *coding; |
9af30bdf | 5537 | void (*volatile old_sigpipe) (int); |
6044e593 | 5538 | |
6bfd98e7 | 5539 | if (p->raw_status_new) |
6b61353c | 5540 | update_status (p); |
4d2b044c DA |
5541 | if (! EQ (p->status, Qrun)) |
5542 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5543 | if (p->outfd < 0) |
4d2b044c | 5544 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5545 | |
60f0fb11 | 5546 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5547 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5548 | |
ed7a4b2d KH |
5549 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5550 | || (BUFFERP (object) | |
4b4deea2 | 5551 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5552 | || EQ (object, Qt)) |
278bfdd6 | 5553 | { |
6a09a33b PE |
5554 | pset_encode_coding_system |
5555 | (p, complement_process_encoding_system (p->encode_coding_system)); | |
4d2b044c | 5556 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
fcaf8878 KH |
5557 | { |
5558 | /* The coding system for encoding was changed to raw-text | |
5559 | because we sent a unibyte text previously. Now we are | |
5560 | sending a multibyte text, thus we must encode it by the | |
5561 | original coding system specified for the current process. | |
5562 | ||
da6062e6 PE |
5563 | Another reason we come here is that the coding system |
5564 | was just complemented and a new one was returned by | |
fcaf8878 | 5565 | complement_process_encoding_system. */ |
4d2b044c DA |
5566 | setup_coding_system (p->encode_coding_system, coding); |
5567 | Vlast_coding_system_used = p->encode_coding_system; | |
fcaf8878 | 5568 | } |
e08bbb84 | 5569 | coding->src_multibyte = 1; |
278bfdd6 KH |
5570 | } |
5571 | else | |
5572 | { | |
a0241d01 | 5573 | coding->src_multibyte = 0; |
a92e4183 KH |
5574 | /* For sending a unibyte text, character code conversion should |
5575 | not take place but EOL conversion should. So, setup raw-text | |
5576 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5577 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5578 | { |
5579 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5580 | { | |
5581 | /* But, before changing the coding, we must flush out data. */ | |
5582 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5583 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5584 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5585 | } |
5bbf78c1 KH |
5586 | setup_coding_system (raw_text_coding_system |
5587 | (Vlast_coding_system_used), | |
5588 | coding); | |
e08bbb84 | 5589 | coding->src_multibyte = 0; |
a92e4183 | 5590 | } |
278bfdd6 | 5591 | } |
a4a37e65 KH |
5592 | coding->dst_multibyte = 0; |
5593 | ||
ed7a4b2d | 5594 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5595 | { |
5bbf78c1 | 5596 | coding->dst_object = Qt; |
ed7a4b2d | 5597 | if (BUFFERP (object)) |
0fa1789e | 5598 | { |
d311d28c PE |
5599 | ptrdiff_t from_byte, from, to; |
5600 | ptrdiff_t save_pt, save_pt_byte; | |
5bbf78c1 KH |
5601 | struct buffer *cur = current_buffer; |
5602 | ||
5603 | set_buffer_internal (XBUFFER (object)); | |
5604 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5605 | ||
400a67ff | 5606 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5607 | from = BYTE_TO_CHAR (from_byte); |
5608 | to = BYTE_TO_CHAR (from_byte + len); | |
5609 | TEMP_SET_PT_BOTH (from, from_byte); | |
5610 | encode_coding_object (coding, object, from, from_byte, | |
5611 | to, from_byte + len, Qt); | |
5612 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5613 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5614 | } |
5615 | else if (STRINGP (object)) | |
5616 | { | |
550c8289 KH |
5617 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5618 | SBYTES (object), Qt); | |
0fa1789e | 5619 | } |
5bbf78c1 | 5620 | else |
452294c2 | 5621 | { |
5bbf78c1 KH |
5622 | coding->dst_object = make_unibyte_string (buf, len); |
5623 | coding->produced = len; | |
452294c2 | 5624 | } |
ed7a4b2d | 5625 | |
e7fbaa65 | 5626 | len = coding->produced; |
347f3cd3 | 5627 | object = coding->dst_object; |
400a67ff | 5628 | buf = SSDATA (object); |
0fa1789e | 5629 | } |
d0d6b7c5 | 5630 | |
4556b700 RS |
5631 | if (pty_max_bytes == 0) |
5632 | { | |
5633 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5634 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5635 | if (pty_max_bytes < 0) |
5636 | pty_max_bytes = 250; | |
5637 | #else | |
5638 | pty_max_bytes = 250; | |
5639 | #endif | |
5640 | /* Deduct one, to leave space for the eof. */ | |
5641 | pty_max_bytes--; | |
5642 | } | |
5643 | ||
0daad115 GM |
5644 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5645 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5646 | when returning with longjmp despite being declared volatile. */ | |
af26b72c | 5647 | if (!_setjmp (send_process_frame)) |
0daad115 | 5648 | { |
006c5daa | 5649 | p = XPROCESS (proc); /* Repair any setjmp clobbering. */ |
0daad115 | 5650 | process_sent_to = proc; |
20ca2e94 TN |
5651 | |
5652 | /* If there is already data in the write_queue, put the new data | |
5653 | in the back of queue. Otherwise, ignore it. */ | |
4d2b044c | 5654 | if (!NILP (p->write_queue)) |
20ca2e94 TN |
5655 | write_queue_push (p, object, buf, len, 0); |
5656 | ||
5657 | do /* while !NILP (p->write_queue) */ | |
0daad115 | 5658 | { |
7ea2b339 | 5659 | ptrdiff_t cur_len = -1; |
20ca2e94 TN |
5660 | const char *cur_buf; |
5661 | Lisp_Object cur_object; | |
5662 | ||
5663 | /* If write_queue is empty, ignore it. */ | |
5664 | if (!write_queue_pop (p, &cur_object, &cur_buf, &cur_len)) | |
5665 | { | |
5666 | cur_len = len; | |
5667 | cur_buf = buf; | |
5668 | cur_object = object; | |
5669 | } | |
93b4f699 | 5670 | |
20ca2e94 | 5671 | while (cur_len > 0) |
0daad115 | 5672 | { |
20ca2e94 | 5673 | /* Send this batch, using one or more write calls. */ |
d311d28c | 5674 | ptrdiff_t written = 0; |
60f0fb11 | 5675 | int outfd = p->outfd; |
20ef56db | 5676 | old_sigpipe = signal (SIGPIPE, deliver_pipe_signal); |
e690ca94 KS |
5677 | #ifdef DATAGRAM_SOCKETS |
5678 | if (DATAGRAM_CHAN_P (outfd)) | |
5679 | { | |
20ca2e94 | 5680 | rv = sendto (outfd, cur_buf, cur_len, |
e690ca94 KS |
5681 | 0, datagram_address[outfd].sa, |
5682 | datagram_address[outfd].len); | |
273a5f82 PE |
5683 | if (0 <= rv) |
5684 | written = rv; | |
5685 | else if (errno == EMSGSIZE) | |
c8f44005 RS |
5686 | { |
5687 | signal (SIGPIPE, old_sigpipe); | |
5688 | report_file_error ("sending datagram", | |
5689 | Fcons (proc, Qnil)); | |
5690 | } | |
e690ca94 KS |
5691 | } |
5692 | else | |
5693 | #endif | |
6b61353c | 5694 | { |
8af55556 | 5695 | #ifdef HAVE_GNUTLS |
959ad23f | 5696 | if (p->gnutls_p) |
20ca2e94 | 5697 | written = emacs_gnutls_write (p, cur_buf, cur_len); |
8af55556 TZ |
5698 | else |
5699 | #endif | |
20ca2e94 | 5700 | written = emacs_write (outfd, cur_buf, cur_len); |
086e8c47 | 5701 | rv = (written ? 0 : -1); |
6b61353c | 5702 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
5703 | if (p->read_output_delay > 0 |
5704 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5705 | { |
60f0fb11 | 5706 | p->read_output_delay = 0; |
6b61353c | 5707 | process_output_delay_count--; |
60f0fb11 | 5708 | p->read_output_skip = 0; |
6b61353c KH |
5709 | } |
5710 | #endif | |
5711 | } | |
0daad115 | 5712 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5713 | |
0daad115 GM |
5714 | if (rv < 0) |
5715 | { | |
5716 | if (0 | |
d0d6b7c5 | 5717 | #ifdef EWOULDBLOCK |
0daad115 | 5718 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5719 | #endif |
5720 | #ifdef EAGAIN | |
0daad115 | 5721 | || errno == EAGAIN |
d0d6b7c5 | 5722 | #endif |
0daad115 | 5723 | ) |
177c0ea7 | 5724 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5725 | that may allow the program |
5726 | to finish doing output and read more. */ | |
5727 | { | |
3433b6bd | 5728 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5729 | /* A gross hack to work around a bug in FreeBSD. |
5730 | In the following sequence, read(2) returns | |
5731 | bogus data: | |
5732 | ||
5733 | write(2) 1022 bytes | |
5734 | write(2) 954 bytes, get EAGAIN | |
5735 | read(2) 1024 bytes in process_read_output | |
5736 | read(2) 11 bytes in process_read_output | |
5737 | ||
5738 | That is, read(2) returns more bytes than have | |
5739 | ever been written successfully. The 1033 bytes | |
5740 | read are the 1022 bytes written successfully | |
5741 | after processing (for example with CRs added if | |
5742 | the terminal is set up that way which it is | |
5743 | here). The same bytes will be seen again in a | |
5744 | later read(2), without the CRs. */ | |
177c0ea7 | 5745 | |
0daad115 GM |
5746 | if (errno == EAGAIN) |
5747 | { | |
5748 | int flags = FWRITE; | |
60f0fb11 | 5749 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5750 | } |
3433b6bd | 5751 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5752 | |
7ea2b339 | 5753 | /* Put what we should have written in wait_queue. */ |
20ca2e94 | 5754 | write_queue_push (p, cur_object, cur_buf, cur_len, 1); |
d35af63c PE |
5755 | wait_reading_process_output (0, 20 * 1000 * 1000, |
5756 | 0, 0, Qnil, NULL, 0); | |
7ea2b339 | 5757 | /* Reread queue, to see what is left. */ |
20ca2e94 | 5758 | break; |
0daad115 GM |
5759 | } |
5760 | else | |
5761 | /* This is a real error. */ | |
5762 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5763 | } | |
20ca2e94 TN |
5764 | cur_buf += written; |
5765 | cur_len -= written; | |
0daad115 | 5766 | } |
0daad115 | 5767 | } |
4d2b044c | 5768 | while (!NILP (p->write_queue)); |
0daad115 | 5769 | } |
d0d6b7c5 JB |
5770 | else |
5771 | { | |
0ff69270 | 5772 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5773 | proc = process_sent_to; |
6b61353c | 5774 | p = XPROCESS (proc); |
6bfd98e7 | 5775 | p->raw_status_new = 0; |
6a09a33b | 5776 | pset_status (p, Fcons (Qexit, Fcons (make_number (256), Qnil))); |
60f0fb11 | 5777 | p->tick = ++process_tick; |
d0d6b7c5 | 5778 | deactivate_process (proc); |
4d2b044c | 5779 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5780 | } |
5781 | } | |
5782 | ||
5783 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5784 | 3, 3, 0, |
5785 | doc: /* Send current contents of region as input to PROCESS. | |
5786 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5787 | nil, indicating the current buffer's process. | |
5788 | Called from program, takes three arguments, PROCESS, START and END. | |
5789 | If the region is more than 500 characters long, | |
5790 | it is sent in several bunches. This may happen even for shorter regions. | |
5791 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5792 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5793 | { |
5794 | Lisp_Object proc; | |
d311d28c | 5795 | ptrdiff_t start1, end1; |
d0d6b7c5 JB |
5796 | |
5797 | proc = get_process (process); | |
5798 | validate_region (&start, &end); | |
1b234f64 KH |
5799 | |
5800 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5801 | move_gap (XINT (start)); | |
5802 | ||
5803 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5804 | end1 = CHAR_TO_BYTE (XINT (end)); | |
400a67ff | 5805 | send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1, |
1b234f64 KH |
5806 | Fcurrent_buffer ()); |
5807 | ||
d0d6b7c5 JB |
5808 | return Qnil; |
5809 | } | |
5810 | ||
5811 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5812 | 2, 2, 0, |
5813 | doc: /* Send PROCESS the contents of STRING as input. | |
5814 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5815 | nil, indicating the current buffer's process. | |
5816 | If STRING is more than 500 characters long, | |
5817 | it is sent in several bunches. This may happen even for shorter strings. | |
5818 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5819 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5820 | { |
5821 | Lisp_Object proc; | |
b7826503 | 5822 | CHECK_STRING (string); |
d0d6b7c5 | 5823 | proc = get_process (process); |
400a67ff | 5824 | send_process (proc, SSDATA (string), |
1b234f64 | 5825 | SBYTES (string), string); |
d0d6b7c5 JB |
5826 | return Qnil; |
5827 | } | |
5828 | \f | |
16782258 JD |
5829 | /* Return the foreground process group for the tty/pty that |
5830 | the process P uses. */ | |
dde14581 | 5831 | static pid_t |
d3da34e0 | 5832 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 | 5833 | { |
dde14581 | 5834 | pid_t gid = -1; |
16782258 | 5835 | |
f3d9532b | 5836 | #ifdef TIOCGPGRP |
4d2b044c | 5837 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5838 | { |
5839 | int fd; | |
5840 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5841 | master side. Try the slave side. */ | |
4d2b044c | 5842 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5843 | |
5844 | if (fd != -1) | |
5845 | { | |
5846 | ioctl (fd, TIOCGPGRP, &gid); | |
5847 | emacs_close (fd); | |
5848 | } | |
5849 | } | |
5850 | #endif /* defined (TIOCGPGRP ) */ | |
5851 | ||
5852 | return gid; | |
5853 | } | |
5854 | ||
b81ea5ef RS |
5855 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5856 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5857 | doc: /* Return t if PROCESS has given the terminal to a child. |
5858 | If the operating system does not make it possible to find out, | |
5859 | return t unconditionally. */) | |
5842a27b | 5860 | (Lisp_Object process) |
b81ea5ef RS |
5861 | { |
5862 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5863 | in a way that will cause returning t. */ | |
dde14581 | 5864 | pid_t gid; |
b81ea5ef RS |
5865 | Lisp_Object proc; |
5866 | struct Lisp_Process *p; | |
5867 | ||
5868 | proc = get_process (process); | |
5869 | p = XPROCESS (proc); | |
5870 | ||
4d2b044c | 5871 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5872 | error ("Process %s is not a subprocess", |
4d2b044c | 5873 | SDATA (p->name)); |
60f0fb11 | 5874 | if (p->infd < 0) |
b81ea5ef | 5875 | error ("Process %s is not active", |
4d2b044c | 5876 | SDATA (p->name)); |
b81ea5ef | 5877 | |
16782258 | 5878 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5879 | |
6bfd98e7 | 5880 | if (gid == p->pid) |
b81ea5ef RS |
5881 | return Qnil; |
5882 | return Qt; | |
5883 | } | |
5884 | \f | |
d0d6b7c5 | 5885 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5886 | If CURRENT_GROUP is t, that means send to the process group |
5887 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5888 | This is used for various commands in shell mode. |
b81ea5ef RS |
5889 | If CURRENT_GROUP is lambda, that means send to the process group |
5890 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5891 | ||
d0d6b7c5 | 5892 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5893 | right away. |
5894 | ||
5895 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5896 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5897 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5898 | |
f9738840 | 5899 | static void |
d3da34e0 JB |
5900 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5901 | int nomsg) | |
d0d6b7c5 JB |
5902 | { |
5903 | Lisp_Object proc; | |
5904 | register struct Lisp_Process *p; | |
dde14581 | 5905 | pid_t gid; |
d0d6b7c5 JB |
5906 | int no_pgrp = 0; |
5907 | ||
5908 | proc = get_process (process); | |
5909 | p = XPROCESS (proc); | |
5910 | ||
4d2b044c | 5911 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5912 | error ("Process %s is not a subprocess", |
4d2b044c | 5913 | SDATA (p->name)); |
60f0fb11 | 5914 | if (p->infd < 0) |
d0d6b7c5 | 5915 | error ("Process %s is not active", |
4d2b044c | 5916 | SDATA (p->name)); |
d0d6b7c5 | 5917 | |
60f0fb11 | 5918 | if (!p->pty_flag) |
d0d6b7c5 JB |
5919 | current_group = Qnil; |
5920 | ||
d0d6b7c5 | 5921 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5922 | if (NILP (current_group)) |
5923 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5924 | gid = p->pid; |
2af70a0c | 5925 | else |
d0d6b7c5 | 5926 | { |
b0310da4 | 5927 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5928 | /* If possible, send signals to the entire pgrp |
5929 | by sending an input character to it. */ | |
b0310da4 | 5930 | |
6be429b1 | 5931 | struct termios t; |
7f916a36 RS |
5932 | cc_t *sig_char = NULL; |
5933 | ||
60f0fb11 | 5934 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5935 | |
5936 | switch (signo) | |
5937 | { | |
5938 | case SIGINT: | |
7f916a36 RS |
5939 | sig_char = &t.c_cc[VINTR]; |
5940 | break; | |
6be429b1 JB |
5941 | |
5942 | case SIGQUIT: | |
7f916a36 RS |
5943 | sig_char = &t.c_cc[VQUIT]; |
5944 | break; | |
6be429b1 JB |
5945 | |
5946 | case SIGTSTP: | |
d0adf46f | 5947 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5948 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5949 | #else |
7f916a36 | 5950 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5951 | #endif |
7f916a36 | 5952 | break; |
6be429b1 JB |
5953 | } |
5954 | ||
ca4313d5 | 5955 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc | 5956 | { |
f990b4e5 | 5957 | send_process (proc, (char *) sig_char, 1, Qnil); |
f1c206fc RS |
5958 | return; |
5959 | } | |
5960 | /* If we can't send the signal with a character, | |
5961 | fall through and send it another way. */ | |
f1c206fc RS |
5962 | |
5963 | /* The code above may fall through if it can't | |
5964 | handle the signal. */ | |
20505336 | 5965 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5966 | |
177c0ea7 | 5967 | #ifdef TIOCGPGRP |
2af70a0c | 5968 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5969 | Otherwise, use the pty to get the pgrp. |
5970 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5971 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5972 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5973 | His patch indicates that if TIOCGPGRP returns an error, then |
5974 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5975 | |
16782258 | 5976 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5977 | |
16782258 JD |
5978 | if (gid == -1) |
5979 | /* If we can't get the information, assume | |
5980 | the shell owns the tty. */ | |
6bfd98e7 | 5981 | gid = p->pid; |
2af70a0c RS |
5982 | |
5983 | /* It is not clear whether anything really can set GID to -1. | |
5984 | Perhaps on some system one of those ioctls can or could do so. | |
5985 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5986 | if (gid == -1) |
5987 | no_pgrp = 1; | |
b0310da4 | 5988 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5989 | /* Can't select pgrps on this system, so we know that |
5990 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5991 | gid = p->pid; |
301c3fe4 | 5992 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5993 | |
5994 | /* If current_group is lambda, and the shell owns the terminal, | |
5995 | don't send any signal. */ | |
6bfd98e7 | 5996 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5997 | return; |
d0d6b7c5 | 5998 | } |
d0d6b7c5 JB |
5999 | |
6000 | switch (signo) | |
6001 | { | |
6002 | #ifdef SIGCONT | |
6003 | case SIGCONT: | |
6bfd98e7 | 6004 | p->raw_status_new = 0; |
6a09a33b | 6005 | pset_status (p, Qrun); |
60f0fb11 | 6006 | p->tick = ++process_tick; |
d0d6b7c5 | 6007 | if (!nomsg) |
e42bdf01 CY |
6008 | { |
6009 | status_notify (NULL); | |
6010 | redisplay_preserve_echo_area (13); | |
6011 | } | |
d0d6b7c5 | 6012 | break; |
301c3fe4 | 6013 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 6014 | case SIGINT: |
d0d6b7c5 | 6015 | case SIGQUIT: |
d0d6b7c5 | 6016 | case SIGKILL: |
60f0fb11 | 6017 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
6018 | break; |
6019 | } | |
6020 | ||
6021 | /* If we don't have process groups, send the signal to the immediate | |
6022 | subprocess. That isn't really right, but it's better than any | |
6023 | obvious alternative. */ | |
6024 | if (no_pgrp) | |
6025 | { | |
6bfd98e7 | 6026 | kill (p->pid, signo); |
d0d6b7c5 JB |
6027 | return; |
6028 | } | |
6029 | ||
6030 | /* gid may be a pid, or minus a pgrp's number */ | |
6031 | #ifdef TIOCSIGSEND | |
6032 | if (!NILP (current_group)) | |
16782258 | 6033 | { |
60f0fb11 | 6034 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
6035 | EMACS_KILLPG (gid, signo); |
6036 | } | |
d0d6b7c5 JB |
6037 | else |
6038 | { | |
6bfd98e7 | 6039 | gid = - p->pid; |
d0d6b7c5 JB |
6040 | kill (gid, signo); |
6041 | } | |
301c3fe4 | 6042 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 6043 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 6044 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
6045 | } |
6046 | ||
6047 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
6048 | doc: /* Interrupt process PROCESS. |
6049 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 6050 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
6051 | Second arg CURRENT-GROUP non-nil means send signal to |
6052 | the current process-group of the process's controlling terminal | |
6053 | rather than to the process's own process group. | |
6054 | If the process is a shell, this means interrupt current subjob | |
6055 | rather than the shell. | |
6056 | ||
6057 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
6058 | don't send the signal. */) | |
5842a27b | 6059 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6060 | { |
6061 | process_send_signal (process, SIGINT, current_group, 0); | |
6062 | return process; | |
6063 | } | |
6064 | ||
6065 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
6066 | doc: /* Kill process PROCESS. May be process or name of one. |
6067 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 6068 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6069 | { |
6070 | process_send_signal (process, SIGKILL, current_group, 0); | |
6071 | return process; | |
6072 | } | |
6073 | ||
6074 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
6075 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
6076 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 6077 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6078 | { |
6079 | process_send_signal (process, SIGQUIT, current_group, 0); | |
6080 | return process; | |
6081 | } | |
6082 | ||
6083 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6084 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6085 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6086 | If PROCESS is a network or serial process, inhibit handling of incoming |
6087 | traffic. */) | |
5842a27b | 6088 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6089 | { |
d888760c | 6090 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6091 | { |
6092 | struct Lisp_Process *p; | |
177c0ea7 | 6093 | |
e690ca94 | 6094 | p = XPROCESS (process); |
4d2b044c | 6095 | if (NILP (p->command) |
60f0fb11 | 6096 | && p->infd >= 0) |
e690ca94 | 6097 | { |
60f0fb11 SM |
6098 | FD_CLR (p->infd, &input_wait_mask); |
6099 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 | 6100 | } |
6a09a33b | 6101 | pset_command (p, Qt); |
e690ca94 KS |
6102 | return process; |
6103 | } | |
d0d6b7c5 | 6104 | #ifndef SIGTSTP |
a9a73d6c | 6105 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6106 | #else |
6107 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6108 | #endif | |
6109 | return process; | |
6110 | } | |
6111 | ||
6112 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6113 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6114 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6115 | If PROCESS is a network or serial process, resume handling of incoming |
6116 | traffic. */) | |
5842a27b | 6117 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6118 | { |
d888760c | 6119 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6120 | { |
6121 | struct Lisp_Process *p; | |
6122 | ||
6123 | p = XPROCESS (process); | |
4d2b044c | 6124 | if (EQ (p->command, Qt) |
60f0fb11 | 6125 | && p->infd >= 0 |
4d2b044c | 6126 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
e690ca94 | 6127 | { |
60f0fb11 SM |
6128 | FD_SET (p->infd, &input_wait_mask); |
6129 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6130 | #ifdef WINDOWSNT |
6131 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6132 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 6133 | #else /* not WINDOWSNT */ |
d888760c | 6134 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 6135 | #endif /* not WINDOWSNT */ |
e690ca94 | 6136 | } |
6a09a33b | 6137 | pset_command (p, Qnil); |
e690ca94 KS |
6138 | return process; |
6139 | } | |
d0d6b7c5 JB |
6140 | #ifdef SIGCONT |
6141 | process_send_signal (process, SIGCONT, current_group, 0); | |
6142 | #else | |
a9a73d6c | 6143 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6144 | #endif |
6145 | return process; | |
6146 | } | |
6147 | ||
6148 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6149 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6150 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6151 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6152 | process to signal; in this case, the process need not be a child of |
6153 | this Emacs. | |
fdb82f93 | 6154 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6155 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6156 | { |
6bfd98e7 | 6157 | pid_t pid; |
cdd5ea86 | 6158 | |
cdd5ea86 KS |
6159 | if (STRINGP (process)) |
6160 | { | |
d311d28c PE |
6161 | Lisp_Object tem = Fget_process (process); |
6162 | if (NILP (tem)) | |
cdd5ea86 | 6163 | { |
d44287d4 PE |
6164 | Lisp_Object process_number = |
6165 | string_to_number (SSDATA (process), 10, 1); | |
6166 | if (INTEGERP (process_number) || FLOATP (process_number)) | |
6167 | tem = process_number; | |
cdd5ea86 KS |
6168 | } |
6169 | process = tem; | |
6170 | } | |
d44287d4 | 6171 | else if (!NUMBERP (process)) |
cdd5ea86 | 6172 | process = get_process (process); |
177c0ea7 | 6173 | |
cdd5ea86 KS |
6174 | if (NILP (process)) |
6175 | return process; | |
6176 | ||
d83cf4cc PE |
6177 | if (NUMBERP (process)) |
6178 | CONS_TO_INTEGER (process, pid_t, pid); | |
d44287d4 PE |
6179 | else |
6180 | { | |
6181 | CHECK_PROCESS (process); | |
6182 | pid = XPROCESS (process)->pid; | |
6183 | if (pid <= 0) | |
4d2b044c | 6184 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
d44287d4 | 6185 | } |
4766242d | 6186 | |
59324b1d | 6187 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6188 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6189 | XSETINT (sigcode, VALUE) |
6190 | ||
6191 | if (INTEGERP (sigcode)) | |
d311d28c | 6192 | CHECK_TYPE_RANGED_INTEGER (int, sigcode); |
4766242d RS |
6193 | else |
6194 | { | |
25a48bd0 | 6195 | char *name; |
4766242d | 6196 | |
b7826503 | 6197 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6198 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6199 | |
ed3751c8 | 6200 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6201 | name += 3; |
6202 | ||
4766242d RS |
6203 | if (0) |
6204 | ; | |
59324b1d KS |
6205 | #ifdef SIGUSR1 |
6206 | parse_signal ("usr1", SIGUSR1); | |
6207 | #endif | |
6208 | #ifdef SIGUSR2 | |
6209 | parse_signal ("usr2", SIGUSR2); | |
6210 | #endif | |
6211 | #ifdef SIGTERM | |
6212 | parse_signal ("term", SIGTERM); | |
6213 | #endif | |
4766242d | 6214 | #ifdef SIGHUP |
59324b1d | 6215 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6216 | #endif |
6217 | #ifdef SIGINT | |
59324b1d | 6218 | parse_signal ("int", SIGINT); |
4766242d RS |
6219 | #endif |
6220 | #ifdef SIGQUIT | |
59324b1d | 6221 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6222 | #endif |
6223 | #ifdef SIGILL | |
59324b1d | 6224 | parse_signal ("ill", SIGILL); |
4766242d RS |
6225 | #endif |
6226 | #ifdef SIGABRT | |
59324b1d | 6227 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6228 | #endif |
6229 | #ifdef SIGEMT | |
59324b1d | 6230 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6231 | #endif |
6232 | #ifdef SIGKILL | |
59324b1d | 6233 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6234 | #endif |
6235 | #ifdef SIGFPE | |
59324b1d | 6236 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6237 | #endif |
6238 | #ifdef SIGBUS | |
59324b1d | 6239 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6240 | #endif |
6241 | #ifdef SIGSEGV | |
59324b1d | 6242 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6243 | #endif |
6244 | #ifdef SIGSYS | |
59324b1d | 6245 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6246 | #endif |
6247 | #ifdef SIGPIPE | |
59324b1d | 6248 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6249 | #endif |
6250 | #ifdef SIGALRM | |
59324b1d | 6251 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6252 | #endif |
6253 | #ifdef SIGURG | |
59324b1d | 6254 | parse_signal ("urg", SIGURG); |
4766242d RS |
6255 | #endif |
6256 | #ifdef SIGSTOP | |
59324b1d | 6257 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6258 | #endif |
6259 | #ifdef SIGTSTP | |
59324b1d | 6260 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6261 | #endif |
6262 | #ifdef SIGCONT | |
59324b1d | 6263 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6264 | #endif |
6265 | #ifdef SIGCHLD | |
59324b1d | 6266 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6267 | #endif |
6268 | #ifdef SIGTTIN | |
59324b1d | 6269 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6270 | #endif |
6271 | #ifdef SIGTTOU | |
59324b1d | 6272 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6273 | #endif |
6274 | #ifdef SIGIO | |
59324b1d | 6275 | parse_signal ("io", SIGIO); |
4766242d RS |
6276 | #endif |
6277 | #ifdef SIGXCPU | |
59324b1d | 6278 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6279 | #endif |
6280 | #ifdef SIGXFSZ | |
59324b1d | 6281 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6282 | #endif |
6283 | #ifdef SIGVTALRM | |
59324b1d | 6284 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6285 | #endif |
6286 | #ifdef SIGPROF | |
59324b1d | 6287 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6288 | #endif |
6289 | #ifdef SIGWINCH | |
59324b1d | 6290 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6291 | #endif |
6292 | #ifdef SIGINFO | |
59324b1d | 6293 | parse_signal ("info", SIGINFO); |
4766242d RS |
6294 | #endif |
6295 | else | |
9fa195a2 | 6296 | error ("Undefined signal name %s", name); |
4766242d RS |
6297 | } |
6298 | ||
59324b1d | 6299 | #undef parse_signal |
4766242d | 6300 | |
6bfd98e7 | 6301 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6302 | } |
6303 | ||
6304 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6305 | doc: /* Make PROCESS see end-of-file in its input. |
6306 | EOF comes after any text already sent to it. | |
6307 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6308 | nil, indicating the current buffer's process. | |
6309 | If PROCESS is a network connection, or is a process communicating | |
6310 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6311 | text to PROCESS after you call this function. |
6312 | If PROCESS is a serial process, wait until all output written to the | |
6313 | process has been transmitted to the serial port. */) | |
5842a27b | 6314 | (Lisp_Object process) |
d0d6b7c5 JB |
6315 | { |
6316 | Lisp_Object proc; | |
de7fbd09 | 6317 | struct coding_system *coding; |
d0d6b7c5 | 6318 | |
e690ca94 KS |
6319 | if (DATAGRAM_CONN_P (process)) |
6320 | return process; | |
6321 | ||
d0d6b7c5 | 6322 | proc = get_process (process); |
60f0fb11 | 6323 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6324 | |
6325 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6326 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 | 6327 | update_status (XPROCESS (proc)); |
4d2b044c DA |
6328 | if (! EQ (XPROCESS (proc)->status, Qrun)) |
6329 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); | |
577d03d5 | 6330 | |
de7fbd09 KH |
6331 | if (CODING_REQUIRE_FLUSHING (coding)) |
6332 | { | |
6333 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6334 | send_process (proc, "", 0, Qnil); | |
6335 | } | |
6336 | ||
60f0fb11 | 6337 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6338 | send_process (proc, "\004", 1, Qnil); |
4d2b044c | 6339 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6340 | { |
a7ebc409 | 6341 | #ifndef WINDOWSNT |
d888760c GM |
6342 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6343 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6344 | #endif /* not WINDOWSNT */ |
d888760c GM |
6345 | /* Do nothing on Windows because writes are blocking. */ |
6346 | } | |
d0d6b7c5 JB |
6347 | else |
6348 | { | |
4525f571 RS |
6349 | int old_outfd, new_outfd; |
6350 | ||
93853f3d | 6351 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6352 | /* If this is a network connection, or socketpair is used |
6353 | for communication with the subprocess, call shutdown to cause EOF. | |
6354 | (In some old system, shutdown to socketpair doesn't work. | |
6355 | Then we just can't win.) */ | |
4d2b044c | 6356 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6357 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6358 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6359 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6360 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6361 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6362 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6363 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6364 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6365 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 | 6366 | if (new_outfd < 0) |
1088b922 | 6367 | emacs_abort (); |
60f0fb11 | 6368 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6369 | |
6370 | if (!proc_encode_coding_system[new_outfd]) | |
6371 | proc_encode_coding_system[new_outfd] | |
23f86fce | 6372 | = xmalloc (sizeof (struct coding_system)); |
72af86bd AS |
6373 | memcpy (proc_encode_coding_system[new_outfd], |
6374 | proc_encode_coding_system[old_outfd], | |
6375 | sizeof (struct coding_system)); | |
6376 | memset (proc_encode_coding_system[old_outfd], 0, | |
6377 | sizeof (struct coding_system)); | |
4525f571 | 6378 | |
60f0fb11 | 6379 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6380 | } |
d0d6b7c5 JB |
6381 | return process; |
6382 | } | |
d0d6b7c5 | 6383 | \f |
3fed8ad5 GM |
6384 | /* On receipt of a signal that a child status has changed, loop asking |
6385 | about children with changed statuses until the system says there | |
6386 | are no more. | |
177c0ea7 | 6387 | |
3fed8ad5 GM |
6388 | All we do is change the status; we do not run sentinels or print |
6389 | notifications. That is saved for the next time keyboard input is | |
6390 | done, in order to avoid timing errors. | |
6391 | ||
6392 | ** WARNING: this can be called during garbage collection. | |
6393 | Therefore, it must not be fooled by the presence of mark bits in | |
6394 | Lisp objects. | |
6395 | ||
6396 | ** USG WARNING: Although it is not obvious from the documentation | |
6397 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6398 | signal() before executing at least one wait(), otherwise the | |
6399 | handler will be called again, resulting in an infinite loop. The | |
6400 | relevant portion of the documentation reads "SIGCLD signals will be | |
6401 | queued and the signal-catching function will be continually | |
6402 | reentered until the queue is empty". Invoking signal() causes the | |
6403 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6404 | Inc. |
6405 | ||
6406 | ** Malloc WARNING: This should never call malloc either directly or | |
6407 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6408 | |
a5cfdda8 | 6409 | #ifdef SIGCHLD |
20ef56db PE |
6410 | |
6411 | /* Record one child's changed status. Return true if a child was found. */ | |
6412 | static bool | |
6413 | record_child_status_change (void) | |
d0d6b7c5 | 6414 | { |
d0d6b7c5 | 6415 | Lisp_Object proc; |
97ec208f | 6416 | struct Lisp_Process *p; |
20ef56db PE |
6417 | pid_t pid; |
6418 | int w; | |
6419 | Lisp_Object tail; | |
d0d6b7c5 | 6420 | |
20ef56db PE |
6421 | do |
6422 | pid = waitpid (-1, &w, WNOHANG | WUNTRACED); | |
6423 | while (pid < 0 && errno == EINTR); | |
d0d6b7c5 | 6424 | |
20ef56db PE |
6425 | /* PID == 0 means no processes found, PID == -1 means a real failure. |
6426 | Either way, we have done all our job. */ | |
6427 | if (pid <= 0) | |
6428 | return false; | |
d0d6b7c5 | 6429 | |
20ef56db | 6430 | /* Find the process that signaled us, and record its status. */ |
d0d6b7c5 | 6431 | |
20ef56db PE |
6432 | /* The process can have been deleted by Fdelete_process. */ |
6433 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) | |
6434 | { | |
6435 | Lisp_Object xpid = XCAR (tail); | |
6436 | if ((INTEGERP (xpid) && pid == XINT (xpid)) | |
6437 | || (FLOATP (xpid) && pid == XFLOAT_DATA (xpid))) | |
a5cfdda8 | 6438 | { |
20ef56db PE |
6439 | XSETCAR (tail, Qnil); |
6440 | return true; | |
a5cfdda8 | 6441 | } |
20ef56db | 6442 | } |
a5cfdda8 | 6443 | |
20ef56db PE |
6444 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ |
6445 | p = 0; | |
6446 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
6447 | { | |
6448 | proc = XCDR (XCAR (tail)); | |
6449 | p = XPROCESS (proc); | |
6450 | if (EQ (p->type, Qreal) && p->pid == pid) | |
6451 | break; | |
d0d6b7c5 | 6452 | p = 0; |
20ef56db | 6453 | } |
177c0ea7 | 6454 | |
20ef56db PE |
6455 | /* Look for an asynchronous process whose pid hasn't been filled |
6456 | in yet. */ | |
6457 | if (! p) | |
6458 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
6459 | { | |
6460 | proc = XCDR (XCAR (tail)); | |
6461 | p = XPROCESS (proc); | |
6462 | if (p->pid == -1) | |
6463 | break; | |
6464 | p = 0; | |
6465 | } | |
177c0ea7 | 6466 | |
20ef56db PE |
6467 | /* Change the status of the process that was found. */ |
6468 | if (p) | |
6469 | { | |
6470 | int clear_desc_flag = 0; | |
e98d950b | 6471 | |
20ef56db PE |
6472 | p->tick = ++process_tick; |
6473 | p->raw_status = w; | |
6474 | p->raw_status_new = 1; | |
6be429b1 | 6475 | |
20ef56db PE |
6476 | /* If process has terminated, stop waiting for its output. */ |
6477 | if ((WIFSIGNALED (w) || WIFEXITED (w)) | |
6478 | && p->infd >= 0) | |
6479 | clear_desc_flag = 1; | |
d0d6b7c5 | 6480 | |
20ef56db PE |
6481 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ |
6482 | if (clear_desc_flag) | |
d0d6b7c5 | 6483 | { |
20ef56db PE |
6484 | FD_CLR (p->infd, &input_wait_mask); |
6485 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
d0d6b7c5 JB |
6486 | } |
6487 | ||
20ef56db PE |
6488 | /* Tell wait_reading_process_output that it needs to wake up and |
6489 | look around. */ | |
6490 | if (input_available_clear_time) | |
6491 | *input_available_clear_time = make_emacs_time (0, 0); | |
6492 | } | |
6493 | /* There was no asynchronous process found for that pid: we have | |
6494 | a synchronous process. */ | |
6495 | else | |
6496 | { | |
6497 | synch_process_alive = 0; | |
6498 | ||
6499 | /* Report the status of the synchronous process. */ | |
6500 | if (WIFEXITED (w)) | |
6501 | synch_process_retcode = WEXITSTATUS (w); | |
6502 | else if (WIFSIGNALED (w)) | |
6503 | synch_process_termsig = WTERMSIG (w); | |
6504 | ||
6505 | /* Tell wait_reading_process_output that it needs to wake up and | |
6506 | look around. */ | |
6507 | if (input_available_clear_time) | |
6508 | *input_available_clear_time = make_emacs_time (0, 0); | |
6509 | } | |
6510 | ||
6511 | return true; | |
6512 | } | |
a5cfdda8 | 6513 | |
20ef56db PE |
6514 | /* On some systems, the SIGCHLD handler must return right away. If |
6515 | any more processes want to signal us, we will get another signal. | |
6516 | Otherwise, loop around to use up all the processes that have | |
6517 | something to tell us. */ | |
4e6277d8 | 6518 | #if (defined WINDOWSNT \ |
8a2a6032 | 6519 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6520 | && !(defined HPUX && defined WNOHANG))) |
20ef56db | 6521 | enum { CAN_HANDLE_MULTIPLE_CHILDREN = 0 }; |
0216c128 EZ |
6522 | #else |
6523 | enum { CAN_HANDLE_MULTIPLE_CHILDREN = 1 }; | |
20ef56db PE |
6524 | #endif |
6525 | ||
6526 | static void | |
6527 | handle_child_signal (int sig) | |
6528 | { | |
6529 | while (record_child_status_change () && CAN_HANDLE_MULTIPLE_CHILDREN) | |
6530 | continue; | |
d0d6b7c5 | 6531 | } |
20ef56db PE |
6532 | |
6533 | static void | |
6534 | deliver_child_signal (int sig) | |
6535 | { | |
6536 | handle_on_main_thread (sig, handle_child_signal); | |
6537 | } | |
6538 | ||
a5cfdda8 | 6539 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6540 | \f |
6541 | ||
6542 | static Lisp_Object | |
d3da34e0 | 6543 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6544 | { |
6a09a33b | 6545 | pset_sentinel (XPROCESS (XCAR (data)), XCDR (data)); |
d0d6b7c5 JB |
6546 | return Qnil; |
6547 | } | |
6548 | ||
3b9a3dfa | 6549 | static Lisp_Object |
b93aacde | 6550 | exec_sentinel_error_handler (Lisp_Object error_val) |
3b9a3dfa | 6551 | { |
b93aacde | 6552 | cmd_error_internal (error_val, "error in process sentinel: "); |
3b9a3dfa RS |
6553 | Vinhibit_quit = Qt; |
6554 | update_echo_area (); | |
833ba342 | 6555 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6556 | return Qt; |
3b9a3dfa RS |
6557 | } |
6558 | ||
d0d6b7c5 | 6559 | static void |
d3da34e0 | 6560 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6561 | { |
aba7731a | 6562 | Lisp_Object sentinel, odeactivate; |
1882aa38 | 6563 | struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 6564 | ptrdiff_t count = SPECPDL_INDEX (); |
1882aa38 | 6565 | bool outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6566 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6567 | |
84af9896 RS |
6568 | if (inhibit_sentinels) |
6569 | return; | |
6570 | ||
dfc21838 RS |
6571 | /* No need to gcpro these, because all we do with them later |
6572 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6573 | odeactivate = Vdeactivate_mark; |
aba7731a PE |
6574 | #if 0 |
6575 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 6576 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6577 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 6578 | #endif |
dfc21838 | 6579 | |
97e53006 SM |
6580 | /* There's no good reason to let sentinels change the current |
6581 | buffer, and many callers of accept-process-output, sit-for, and | |
6582 | friends don't expect current-buffer to be changed from under them. */ | |
66322887 | 6583 | record_unwind_current_buffer (); |
97e53006 | 6584 | |
4d2b044c | 6585 | sentinel = p->sentinel; |
d0d6b7c5 JB |
6586 | if (NILP (sentinel)) |
6587 | return; | |
6588 | ||
6589 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6590 | assure that it gets restored no matter how the sentinel exits. */ | |
6a09a33b | 6591 | pset_sentinel (p, Qnil); |
d0d6b7c5 JB |
6592 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); |
6593 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6594 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6595 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6596 | |
4da2f5be RS |
6597 | /* In case we get recursively called, |
6598 | and we already saved the match data nonrecursively, | |
6599 | save the same match data in safely recursive fashion. */ | |
6600 | if (outer_running_asynch_code) | |
6601 | { | |
6602 | Lisp_Object tem; | |
89f2614d KS |
6603 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6604 | restore_search_regs (); | |
6605 | record_unwind_save_match_data (); | |
6606 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6607 | } |
6608 | ||
6609 | /* For speed, if a search happens within this code, | |
6610 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6611 | running_asynch_code = 1; |
4da2f5be | 6612 | |
3b9a3dfa RS |
6613 | internal_condition_case_1 (read_process_output_call, |
6614 | Fcons (sentinel, | |
6615 | Fcons (proc, Fcons (reason, Qnil))), | |
6616 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6617 | exec_sentinel_error_handler); | |
4da2f5be RS |
6618 | |
6619 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6620 | restore_search_regs (); |
4da2f5be | 6621 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6622 | |
6623 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6624 | |
6625 | /* Restore waiting_for_user_input_p as it was | |
6626 | when we were called, in case the filter clobbered it. */ | |
6627 | waiting_for_user_input_p = waiting; | |
6628 | ||
7973cfa8 | 6629 | #if 0 |
dfc21838 RS |
6630 | if (! EQ (Fcurrent_buffer (), obuffer) |
6631 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6632 | #endif |
927e08be RS |
6633 | /* But do it only if the caller is actually going to read events. |
6634 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6635 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6636 | if (waiting_for_user_input_p == -1) |
6637 | record_asynch_buffer_change (); | |
8fb3cf64 | 6638 | |
2ea6d561 | 6639 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6640 | } |
6641 | ||
6642 | /* Report all recent events of a change in process status | |
6643 | (either run the sentinel or output a message). | |
b50fe468 RS |
6644 | This is usually done while Emacs is waiting for keyboard input |
6645 | but can be done at other times. */ | |
d0d6b7c5 | 6646 | |
ff6daed3 | 6647 | static void |
d3da34e0 | 6648 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6649 | { |
6650 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6651 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6652 | struct gcpro gcpro1, gcpro2; |
6653 | ||
2e4149a8 KH |
6654 | tail = Qnil; |
6655 | msg = Qnil; | |
d0d6b7c5 JB |
6656 | /* We need to gcpro tail; if read_process_output calls a filter |
6657 | which deletes a process and removes the cons to which tail points | |
6658 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6659 | reference. */ | |
6660 | GCPRO2 (tail, msg); | |
6661 | ||
30623085 RS |
6662 | /* Set this now, so that if new processes are created by sentinels |
6663 | that we run, we get called again to handle their status changes. */ | |
6664 | update_tick = process_tick; | |
6665 | ||
99784d63 | 6666 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6667 | { |
30623085 RS |
6668 | Lisp_Object symbol; |
6669 | register struct Lisp_Process *p; | |
6670 | ||
99784d63 | 6671 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6672 | p = XPROCESS (proc); |
6673 | ||
60f0fb11 | 6674 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6675 | { |
60f0fb11 | 6676 | p->update_tick = p->tick; |
d0d6b7c5 | 6677 | |
30623085 | 6678 | /* If process is still active, read any output that remains. */ |
4d2b044c DA |
6679 | while (! EQ (p->filter, Qt) |
6680 | && ! EQ (p->status, Qconnect) | |
6681 | && ! EQ (p->status, Qlisten) | |
d888760c | 6682 | /* Network or serial process not stopped: */ |
4d2b044c | 6683 | && ! EQ (p->command, Qt) |
60f0fb11 | 6684 | && p->infd >= 0 |
ff6daed3 | 6685 | && p != deleting_process |
60f0fb11 | 6686 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6687 | |
4d2b044c | 6688 | buffer = p->buffer; |
d0d6b7c5 | 6689 | |
30623085 | 6690 | /* Get the text to use for the message. */ |
6bfd98e7 | 6691 | if (p->raw_status_new) |
30623085 | 6692 | update_status (p); |
116c423c | 6693 | msg = status_message (p); |
d0d6b7c5 | 6694 | |
30623085 | 6695 | /* If process is terminated, deactivate it or delete it. */ |
4d2b044c DA |
6696 | symbol = p->status; |
6697 | if (CONSP (p->status)) | |
6698 | symbol = XCAR (p->status); | |
d0d6b7c5 | 6699 | |
30623085 RS |
6700 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6701 | || EQ (symbol, Qclosed)) | |
6702 | { | |
6703 | if (delete_exited_processes) | |
6704 | remove_process (proc); | |
6705 | else | |
6706 | deactivate_process (proc); | |
6707 | } | |
d0d6b7c5 | 6708 | |
0ad61fe7 RS |
6709 | /* The actions above may have further incremented p->tick. |
6710 | So set p->update_tick again | |
6711 | so that an error in the sentinel will not cause | |
6712 | this code to be run again. */ | |
60f0fb11 | 6713 | p->update_tick = p->tick; |
30623085 | 6714 | /* Now output the message suitably. */ |
4d2b044c | 6715 | if (!NILP (p->sentinel)) |
30623085 RS |
6716 | exec_sentinel (proc, msg); |
6717 | /* Don't bother with a message in the buffer | |
6718 | when a process becomes runnable. */ | |
6719 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6720 | { | |
01f5787b | 6721 | Lisp_Object tem; |
30623085 | 6722 | struct buffer *old = current_buffer; |
d311d28c PE |
6723 | ptrdiff_t opoint, opoint_byte; |
6724 | ptrdiff_t before, before_byte; | |
2e4149a8 | 6725 | |
30623085 RS |
6726 | /* Avoid error if buffer is deleted |
6727 | (probably that's why the process is dead, too) */ | |
4b4deea2 | 6728 | if (NILP (BVAR (XBUFFER (buffer), name))) |
30623085 RS |
6729 | continue; |
6730 | Fset_buffer (buffer); | |
12ca5cdf | 6731 | |
6ec8bbd2 | 6732 | opoint = PT; |
d8a2934e | 6733 | opoint_byte = PT_BYTE; |
30623085 RS |
6734 | /* Insert new output into buffer |
6735 | at the current end-of-output marker, | |
6736 | thus preserving logical ordering of input and output. */ | |
4d2b044c DA |
6737 | if (XMARKER (p->mark)->buffer) |
6738 | Fgoto_char (p->mark); | |
30623085 | 6739 | else |
d8a2934e | 6740 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6741 | |
6742 | before = PT; | |
d8a2934e | 6743 | before_byte = PT_BYTE; |
30623085 | 6744 | |
4b4deea2 | 6745 | tem = BVAR (current_buffer, read_only); |
39eb03f1 | 6746 | bset_read_only (current_buffer, Qnil); |
30623085 | 6747 | insert_string ("\nProcess "); |
21238f11 | 6748 | { /* FIXME: temporary kludge */ |
4d2b044c | 6749 | Lisp_Object tem2 = p->name; Finsert (1, &tem2); } |
30623085 RS |
6750 | insert_string (" "); |
6751 | Finsert (1, &msg); | |
39eb03f1 | 6752 | bset_read_only (current_buffer, tem); |
4d2b044c | 6753 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6754 | |
12ca5cdf | 6755 | if (opoint >= before) |
d8a2934e RS |
6756 | SET_PT_BOTH (opoint + (PT - before), |
6757 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6758 | else |
d8a2934e | 6759 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6760 | |
30623085 | 6761 | set_buffer_internal (old); |
d0d6b7c5 | 6762 | } |
30623085 RS |
6763 | } |
6764 | } /* end for */ | |
d0d6b7c5 JB |
6765 | |
6766 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6767 | UNGCPRO; |
6768 | } | |
0fa1789e KH |
6769 | |
6770 | \f | |
6771 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6772 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6773 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6774 | DECODING will be used to decode subprocess output and ENCODING to | |
6775 | encode subprocess input. */) | |
5842a27b | 6776 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6777 | { |
6778 | register struct Lisp_Process *p; | |
6779 | ||
f3d9532b JB |
6780 | CHECK_PROCESS (process); |
6781 | p = XPROCESS (process); | |
60f0fb11 | 6782 | if (p->infd < 0) |
4d2b044c | 6783 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6784 | if (p->outfd < 0) |
4d2b044c | 6785 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6786 | Fcheck_coding_system (decoding); |
6787 | Fcheck_coding_system (encoding); | |
76d812bb | 6788 | encoding = coding_inherit_eol_type (encoding, Qnil); |
6a09a33b PE |
6789 | pset_decode_coding_system (p, decoding); |
6790 | pset_encode_coding_system (p, encoding); | |
f3d9532b | 6791 | setup_process_coding_systems (process); |
0fa1789e KH |
6792 | |
6793 | return Qnil; | |
6794 | } | |
6795 | ||
6796 | DEFUN ("process-coding-system", | |
6797 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6798 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6799 | (register Lisp_Object process) |
0fa1789e | 6800 | { |
f3d9532b | 6801 | CHECK_PROCESS (process); |
4d2b044c DA |
6802 | return Fcons (XPROCESS (process)->decode_coding_system, |
6803 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6804 | } |
03f04413 KH |
6805 | |
6806 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6807 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6808 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6809 | If FLAG is non-nil, the filter is given multibyte strings. | |
6810 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6811 | all character code conversion except for end-of-line conversion is |
6812 | suppressed. */) | |
5842a27b | 6813 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6814 | { |
6815 | register struct Lisp_Process *p; | |
6816 | ||
f3d9532b JB |
6817 | CHECK_PROCESS (process); |
6818 | p = XPROCESS (process); | |
5431bd6a | 6819 | if (NILP (flag)) |
6a09a33b PE |
6820 | pset_decode_coding_system |
6821 | (p, raw_text_coding_system (p->decode_coding_system)); | |
f3d9532b | 6822 | setup_process_coding_systems (process); |
03f04413 KH |
6823 | |
6824 | return Qnil; | |
6825 | } | |
6826 | ||
6827 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6828 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6829 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6830 | (Lisp_Object process) |
03f04413 KH |
6831 | { |
6832 | register struct Lisp_Process *p; | |
5431bd6a | 6833 | struct coding_system *coding; |
03f04413 | 6834 | |
f3d9532b JB |
6835 | CHECK_PROCESS (process); |
6836 | p = XPROCESS (process); | |
5431bd6a SM |
6837 | coding = proc_decode_coding_system[p->infd]; |
6838 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6839 | } |
6840 | ||
6841 | ||
d0d6b7c5 | 6842 | \f |
cb768704 | 6843 | |
4475bec4 PE |
6844 | # ifdef HAVE_GPM |
6845 | ||
994d9841 | 6846 | void |
d3da34e0 | 6847 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6848 | { |
3fad2ad2 | 6849 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6850 | } |
6851 | ||
994d9841 | 6852 | void |
d3da34e0 | 6853 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6854 | { |
3fad2ad2 | 6855 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6856 | } |
6857 | ||
4475bec4 PE |
6858 | # endif |
6859 | ||
006c5daa PE |
6860 | # ifdef SIGIO |
6861 | ||
a69281ff RS |
6862 | /* Return nonzero if *MASK has a bit set |
6863 | that corresponds to one of the keyboard input descriptors. */ | |
6864 | ||
ff6daed3 | 6865 | static int |
d3da34e0 | 6866 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6867 | { |
6868 | int fd; | |
6869 | ||
3fad2ad2 | 6870 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6871 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6872 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6873 | return 1; | |
6874 | ||
6875 | return 0; | |
6876 | } | |
006c5daa | 6877 | # endif |
934e2a68 | 6878 | |
f388c88a | 6879 | #else /* not subprocesses */ |
934e2a68 | 6880 | |
f388c88a EZ |
6881 | /* Defined on msdos.c. */ |
6882 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
0d23c240 | 6883 | EMACS_TIME *, void *); |
934e2a68 | 6884 | |
f388c88a EZ |
6885 | /* Implementation of wait_reading_process_output, assuming that there |
6886 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6887 | |
f388c88a | 6888 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6889 | |
d188e26b | 6890 | TIME_LIMIT is: |
d35af63c PE |
6891 | timeout in seconds |
6892 | If negative, gobble data immediately available but don't wait for any. | |
6893 | ||
d188e26b | 6894 | NSECS is: |
d35af63c PE |
6895 | an additional duration to wait, measured in nanoseconds |
6896 | If TIME_LIMIT is zero, then: | |
d188e26b PE |
6897 | If NSECS == 0, there is no limit. |
6898 | If NSECS > 0, the timeout consists of NSECS only. | |
d35af63c | 6899 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
934e2a68 | 6900 | |
a0bee46f | 6901 | READ_KBD is: |
f388c88a EZ |
6902 | 0 to ignore keyboard input, or |
6903 | 1 to return when input is available, or | |
6904 | -1 means caller will actually read the input, so don't throw to | |
6905 | the quit handler. | |
934e2a68 | 6906 | |
f388c88a EZ |
6907 | see full version for other parameters. We know that wait_proc will |
6908 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6909 | |
d188e26b | 6910 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
f388c88a | 6911 | output that arrives. |
934e2a68 | 6912 | |
f388c88a EZ |
6913 | Return true if we received input from any process. */ |
6914 | ||
6915 | int | |
d35af63c | 6916 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
1408902e EZ |
6917 | int do_display, |
6918 | Lisp_Object wait_for_cell, | |
6919 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6920 | { |
f388c88a EZ |
6921 | register int nfds; |
6922 | EMACS_TIME end_time, timeout; | |
d0d6b7c5 | 6923 | |
d35af63c PE |
6924 | if (time_limit < 0) |
6925 | { | |
6926 | time_limit = 0; | |
6927 | nsecs = -1; | |
6928 | } | |
6929 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
6930 | time_limit = TYPE_MAXIMUM (time_t); | |
6931 | ||
f388c88a | 6932 | /* What does time_limit really mean? */ |
216ee680 | 6933 | if (time_limit || 0 < nsecs) |
f388c88a | 6934 | { |
e9a9ae03 PE |
6935 | timeout = make_emacs_time (time_limit, nsecs); |
6936 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
f388c88a | 6937 | } |
84af9896 | 6938 | |
f388c88a EZ |
6939 | /* Turn off periodic alarms (in case they are in use) |
6940 | and then turn off any other atimers, | |
6941 | because the select emulator uses alarms. */ | |
6942 | stop_polling (); | |
6943 | turn_on_atimers (0); | |
d0d6b7c5 | 6944 | |
f388c88a EZ |
6945 | while (1) |
6946 | { | |
6947 | int timeout_reduced_for_timers = 0; | |
a0bee46f PE |
6948 | SELECT_TYPE waitchannels; |
6949 | int xerrno; | |
dd2281ae | 6950 | |
f388c88a EZ |
6951 | /* If calling from keyboard input, do not quit |
6952 | since we want to return C-g as an input character. | |
6953 | Otherwise, do pending quit if requested. */ | |
6954 | if (read_kbd >= 0) | |
6955 | QUIT; | |
bad49fc7 | 6956 | |
f388c88a EZ |
6957 | /* Exit now if the cell we're waiting for became non-nil. */ |
6958 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6959 | break; | |
0a65b032 | 6960 | |
bae8d137 RS |
6961 | /* Compute time from now till when time limit is up */ |
6962 | /* Exit if already run out */ | |
d35af63c | 6963 | if (nsecs < 0) |
52fd88d3 | 6964 | { |
216ee680 | 6965 | /* A negative timeout means |
52fd88d3 EZ |
6966 | gobble output available now |
6967 | but don't wait at all. */ | |
6968 | ||
e9a9ae03 | 6969 | timeout = make_emacs_time (0, 0); |
52fd88d3 | 6970 | } |
216ee680 | 6971 | else if (time_limit || 0 < nsecs) |
6720a7fb | 6972 | { |
e9a9ae03 PE |
6973 | EMACS_TIME now = current_emacs_time (); |
6974 | if (EMACS_TIME_LE (end_time, now)) | |
6720a7fb | 6975 | break; |
e9a9ae03 | 6976 | timeout = sub_emacs_time (end_time, now); |
6720a7fb | 6977 | } |
52fd88d3 EZ |
6978 | else |
6979 | { | |
e9a9ae03 | 6980 | timeout = make_emacs_time (100000, 0); |
52fd88d3 | 6981 | } |
6720a7fb | 6982 | |
bae8d137 RS |
6983 | /* If our caller will not immediately handle keyboard events, |
6984 | run timer events directly. | |
6985 | (Callers that will immediately read keyboard events | |
6986 | call timer_delay on their own.) */ | |
f3fbd155 | 6987 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6988 | { |
6989 | EMACS_TIME timer_delay; | |
0a65b032 | 6990 | |
9baacf76 | 6991 | do |
0a65b032 | 6992 | { |
9baacf76 | 6993 | int old_timers_run = timers_run; |
f868cd8a | 6994 | timer_delay = timer_check (); |
9baacf76 GM |
6995 | if (timers_run != old_timers_run && do_display) |
6996 | /* We must retry, since a timer may have requeued itself | |
6997 | and that could alter the time delay. */ | |
3007ebfb | 6998 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6999 | else |
7000 | break; | |
0a65b032 | 7001 | } |
9baacf76 | 7002 | while (!detect_input_pending ()); |
0a65b032 | 7003 | |
52fd88d3 | 7004 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7005 | if (read_kbd != 0 |
52fd88d3 EZ |
7006 | && requeued_events_pending_p ()) |
7007 | break; | |
7008 | ||
d35af63c | 7009 | if (EMACS_TIME_VALID_P (timer_delay) && 0 <= nsecs) |
bae8d137 | 7010 | { |
d35af63c | 7011 | if (EMACS_TIME_LT (timer_delay, timeout)) |
bae8d137 | 7012 | { |
f694e5d2 | 7013 | timeout = timer_delay; |
bae8d137 RS |
7014 | timeout_reduced_for_timers = 1; |
7015 | } | |
7016 | } | |
7017 | } | |
7018 | ||
6720a7fb JB |
7019 | /* Cause C-g and alarm signals to take immediate action, |
7020 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7021 | if (read_kbd < 0) |
6720a7fb JB |
7022 | set_waiting_for_input (&timeout); |
7023 | ||
ff11dfa1 | 7024 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7025 | reprocess its display stuff. */ |
5164ee8e | 7026 | if (frame_garbaged && do_display) |
0a65b032 RS |
7027 | { |
7028 | clear_waiting_for_input (); | |
3007ebfb | 7029 | redisplay_preserve_echo_area (15); |
b89a415a | 7030 | if (read_kbd < 0) |
0a65b032 RS |
7031 | set_waiting_for_input (&timeout); |
7032 | } | |
6720a7fb | 7033 | |
a0bee46f PE |
7034 | /* Wait till there is something to do. */ |
7035 | FD_ZERO (&waitchannels); | |
b89a415a | 7036 | if (read_kbd && detect_input_pending ()) |
a0bee46f PE |
7037 | nfds = 0; |
7038 | else | |
1861b214 | 7039 | { |
a0bee46f PE |
7040 | if (read_kbd || !NILP (wait_for_cell)) |
7041 | FD_SET (0, &waitchannels); | |
7042 | nfds = pselect (1, &waitchannels, NULL, NULL, &timeout, NULL); | |
1861b214 | 7043 | } |
f694e5d2 KH |
7044 | |
7045 | xerrno = errno; | |
6720a7fb JB |
7046 | |
7047 | /* Make C-g and alarm signals set flags again */ | |
7048 | clear_waiting_for_input (); | |
7049 | ||
7050 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7051 | do_pending_window_change (0); |
6720a7fb | 7052 | |
d35af63c | 7053 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
f694e5d2 KH |
7054 | /* We waited the full specified time, so return now. */ |
7055 | break; | |
7056 | ||
6720a7fb JB |
7057 | if (nfds == -1) |
7058 | { | |
7059 | /* If the system call was interrupted, then go around the | |
7060 | loop again. */ | |
f694e5d2 | 7061 | if (xerrno == EINTR) |
8db121c4 | 7062 | FD_ZERO (&waitchannels); |
f694e5d2 | 7063 | else |
68c45bf0 | 7064 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 7065 | } |
6720a7fb | 7066 | |
f694e5d2 KH |
7067 | /* Check for keyboard input */ |
7068 | ||
b89a415a | 7069 | if (read_kbd |
78c1afb6 | 7070 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7071 | { |
78c1afb6 | 7072 | swallow_events (do_display); |
f694e5d2 | 7073 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7074 | break; |
78c1afb6 EZ |
7075 | } |
7076 | ||
52fd88d3 | 7077 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7078 | if (read_kbd |
52fd88d3 EZ |
7079 | && requeued_events_pending_p ()) |
7080 | break; | |
7081 | ||
f854a00b RS |
7082 | /* If wait_for_cell. check for keyboard input |
7083 | but don't run any timers. | |
7084 | ??? (It seems wrong to me to check for keyboard | |
7085 | input at all when wait_for_cell, but the code | |
7086 | has been this way since July 1994. | |
7087 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7088 | if (! NILP (wait_for_cell) |
f854a00b RS |
7089 | && detect_input_pending ()) |
7090 | { | |
7091 | swallow_events (do_display); | |
7092 | if (detect_input_pending ()) | |
7093 | break; | |
7094 | } | |
7095 | ||
0a65b032 | 7096 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7097 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7098 | break; |
6720a7fb JB |
7099 | } |
7100 | ||
a87b802f JB |
7101 | start_polling (); |
7102 | ||
6720a7fb JB |
7103 | return 0; |
7104 | } | |
7105 | ||
f388c88a EZ |
7106 | #endif /* not subprocesses */ |
7107 | ||
7108 | /* The following functions are needed even if async subprocesses are | |
7109 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 7110 | |
01faa934 DN |
7111 | /* Add DESC to the set of keyboard input descriptors. */ |
7112 | ||
7113 | void | |
7114 | add_keyboard_wait_descriptor (int desc) | |
7115 | { | |
bf05eed6 | 7116 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
7117 | FD_SET (desc, &input_wait_mask); |
7118 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
7119 | if (desc > max_input_desc) |
7120 | max_input_desc = desc; | |
bf05eed6 | 7121 | #endif |
01faa934 DN |
7122 | } |
7123 | ||
7124 | /* From now on, do not expect DESC to give keyboard input. */ | |
7125 | ||
7126 | void | |
7127 | delete_keyboard_wait_descriptor (int desc) | |
7128 | { | |
bf05eed6 | 7129 | #ifdef subprocesses |
01faa934 | 7130 | int fd; |
3fad2ad2 | 7131 | int lim = max_input_desc; |
01faa934 DN |
7132 | |
7133 | FD_CLR (desc, &input_wait_mask); | |
7134 | FD_CLR (desc, &non_process_wait_mask); | |
7135 | ||
3fad2ad2 | 7136 | if (desc == max_input_desc) |
01faa934 | 7137 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
7138 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
7139 | max_input_desc = fd; | |
bf05eed6 | 7140 | #endif |
01faa934 DN |
7141 | } |
7142 | ||
fc549af9 EZ |
7143 | /* Setup coding systems of PROCESS. */ |
7144 | ||
7145 | void | |
7146 | setup_process_coding_systems (Lisp_Object process) | |
7147 | { | |
7148 | #ifdef subprocesses | |
7149 | struct Lisp_Process *p = XPROCESS (process); | |
7150 | int inch = p->infd; | |
7151 | int outch = p->outfd; | |
7152 | Lisp_Object coding_system; | |
7153 | ||
7154 | if (inch < 0 || outch < 0) | |
7155 | return; | |
7156 | ||
7157 | if (!proc_decode_coding_system[inch]) | |
38182d90 | 7158 | proc_decode_coding_system[inch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c DA |
7159 | coding_system = p->decode_coding_system; |
7160 | if (! NILP (p->filter)) | |
fc549af9 | 7161 | ; |
4d2b044c | 7162 | else if (BUFFERP (p->buffer)) |
fc549af9 | 7163 | { |
4d2b044c | 7164 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
7165 | coding_system = raw_text_coding_system (coding_system); |
7166 | } | |
7167 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7168 | ||
7169 | if (!proc_encode_coding_system[outch]) | |
38182d90 | 7170 | proc_encode_coding_system[outch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c | 7171 | setup_coding_system (p->encode_coding_system, |
fc549af9 EZ |
7172 | proc_encode_coding_system[outch]); |
7173 | #endif | |
7174 | } | |
7175 | ||
7176 | /* Close all descriptors currently in use for communication | |
7177 | with subprocess. This is used in a newly-forked subprocess | |
7178 | to get rid of irrelevant descriptors. */ | |
7179 | ||
7180 | void | |
7181 | close_process_descs (void) | |
7182 | { | |
7183 | #ifndef DOS_NT | |
7184 | int i; | |
7185 | for (i = 0; i < MAXDESC; i++) | |
7186 | { | |
7187 | Lisp_Object process; | |
7188 | process = chan_process[i]; | |
7189 | if (!NILP (process)) | |
7190 | { | |
7191 | int in = XPROCESS (process)->infd; | |
7192 | int out = XPROCESS (process)->outfd; | |
7193 | if (in >= 0) | |
7194 | emacs_close (in); | |
7195 | if (out >= 0 && in != out) | |
7196 | emacs_close (out); | |
7197 | } | |
7198 | } | |
7199 | #endif | |
7200 | } | |
7201 | ||
6720a7fb | 7202 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7203 | doc: /* Return the (or a) process associated with BUFFER. |
7204 | BUFFER may be a buffer or the name of one. */) | |
7205 | (register Lisp_Object buffer) | |
6720a7fb | 7206 | { |
f388c88a EZ |
7207 | #ifdef subprocesses |
7208 | register Lisp_Object buf, tail, proc; | |
7209 | ||
7210 | if (NILP (buffer)) return Qnil; | |
7211 | buf = Fget_buffer (buffer); | |
7212 | if (NILP (buf)) return Qnil; | |
7213 | ||
7214 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7215 | { | |
7216 | proc = Fcdr (XCAR (tail)); | |
4d2b044c | 7217 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
f388c88a EZ |
7218 | return proc; |
7219 | } | |
7220 | #endif /* subprocesses */ | |
6720a7fb JB |
7221 | return Qnil; |
7222 | } | |
7223 | ||
52a1b894 | 7224 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7225 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7226 | 1, 1, 0, | |
f388c88a EZ |
7227 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7228 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7229 | associated with PROCESS will inherit the coding system used to decode | |
7230 | the process output. */) | |
5842a27b | 7231 | (register Lisp_Object process) |
52a1b894 | 7232 | { |
f388c88a EZ |
7233 | #ifdef subprocesses |
7234 | CHECK_PROCESS (process); | |
7235 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7236 | #else | |
52a1b894 EZ |
7237 | /* Ignore the argument and return the value of |
7238 | inherit-process-coding-system. */ | |
7239 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7240 | #endif |
52a1b894 EZ |
7241 | } |
7242 | ||
6720a7fb | 7243 | /* Kill all processes associated with `buffer'. |
f388c88a | 7244 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7245 | |
d9bb0c32 | 7246 | void |
f388c88a | 7247 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7248 | { |
f388c88a EZ |
7249 | #ifdef subprocesses |
7250 | Lisp_Object tail, proc; | |
7251 | ||
7252 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7253 | { | |
7254 | proc = XCDR (XCAR (tail)); | |
7255 | if (PROCESSP (proc) | |
4d2b044c | 7256 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
f388c88a EZ |
7257 | { |
7258 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7259 | Fdelete_process (proc); | |
7260 | else if (XPROCESS (proc)->infd >= 0) | |
7261 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7262 | } | |
7263 | } | |
7264 | #else /* subprocesses */ | |
7265 | /* Since we have no subprocesses, this does nothing. */ | |
7266 | #endif /* subprocesses */ | |
6720a7fb JB |
7267 | } |
7268 | ||
a7ca3326 | 7269 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, |
16a97296 | 7270 | Swaiting_for_user_input_p, 0, 0, 0, |
77defa9a EZ |
7271 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
7272 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7273 | (void) | |
7274 | { | |
7275 | #ifdef subprocesses | |
7276 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7277 | #else | |
7278 | return Qnil; | |
7279 | #endif | |
7280 | } | |
7281 | ||
d568829b EZ |
7282 | /* Stop reading input from keyboard sources. */ |
7283 | ||
7284 | void | |
7285 | hold_keyboard_input (void) | |
7286 | { | |
7287 | kbd_is_on_hold = 1; | |
7288 | } | |
7289 | ||
7290 | /* Resume reading input from keyboard sources. */ | |
7291 | ||
7292 | void | |
7293 | unhold_keyboard_input (void) | |
7294 | { | |
7295 | kbd_is_on_hold = 0; | |
7296 | } | |
7297 | ||
7298 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7299 | ||
7300 | int | |
7301 | kbd_on_hold_p (void) | |
7302 | { | |
7303 | return kbd_is_on_hold; | |
7304 | } | |
7305 | ||
f388c88a EZ |
7306 | \f |
7307 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7308 | ||
934e2a68 EZ |
7309 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7310 | 0, 0, 0, | |
7311 | doc: /* Return a list of numerical process IDs of all running processes. | |
7312 | If this functionality is unsupported, return nil. | |
7313 | ||
f388c88a EZ |
7314 | See `process-attributes' for getting attributes of a process given its ID. */) |
7315 | (void) | |
7316 | { | |
7317 | return list_system_processes (); | |
7318 | } | |
7319 | ||
7320 | DEFUN ("process-attributes", Fprocess_attributes, | |
7321 | Sprocess_attributes, 1, 1, 0, | |
7322 | doc: /* Return attributes of the process given by its PID, a number. | |
7323 | ||
7324 | Value is an alist where each element is a cons cell of the form | |
7325 | ||
7326 | \(KEY . VALUE) | |
7327 | ||
7328 | If this functionality is unsupported, the value is nil. | |
7329 | ||
7330 | See `list-system-processes' for getting a list of all process IDs. | |
7331 | ||
7332 | The KEYs of the attributes that this function may return are listed | |
7333 | below, together with the type of the associated VALUE (in parentheses). | |
7334 | Not all platforms support all of these attributes; unsupported | |
7335 | attributes will not appear in the returned alist. | |
7336 | Unless explicitly indicated otherwise, numbers can have either | |
7337 | integer or floating point values. | |
7338 | ||
7339 | euid -- Effective user User ID of the process (number) | |
7340 | user -- User name corresponding to euid (string) | |
7341 | egid -- Effective user Group ID of the process (number) | |
7342 | group -- Group name corresponding to egid (string) | |
7343 | comm -- Command name (executable name only) (string) | |
7344 | state -- Process state code, such as "S", "R", or "T" (string) | |
7345 | ppid -- Parent process ID (number) | |
7346 | pgrp -- Process group ID (number) | |
7347 | sess -- Session ID, i.e. process ID of session leader (number) | |
7348 | ttname -- Controlling tty name (string) | |
7349 | tpgid -- ID of foreground process group on the process's tty (number) | |
7350 | minflt -- number of minor page faults (number) | |
7351 | majflt -- number of major page faults (number) | |
7352 | cminflt -- cumulative number of minor page faults (number) | |
7353 | cmajflt -- cumulative number of major page faults (number) | |
d35af63c PE |
7354 | utime -- user time used by the process, in (current-time) format, |
7355 | which is a list of integers (HIGH LOW USEC PSEC) | |
7356 | stime -- system time used by the process (current-time) | |
7357 | time -- sum of utime and stime (current-time) | |
7358 | cutime -- user time used by the process and its children (current-time) | |
7359 | cstime -- system time used by the process and its children (current-time) | |
7360 | ctime -- sum of cutime and cstime (current-time) | |
f388c88a EZ |
7361 | pri -- priority of the process (number) |
7362 | nice -- nice value of the process (number) | |
7363 | thcount -- process thread count (number) | |
d35af63c | 7364 | start -- time the process started (current-time) |
f388c88a EZ |
7365 | vsize -- virtual memory size of the process in KB's (number) |
7366 | rss -- resident set size of the process in KB's (number) | |
d35af63c | 7367 | etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format |
f388c88a EZ |
7368 | pcpu -- percents of CPU time used by the process (floating-point number) |
7369 | pmem -- percents of total physical memory used by process's resident set | |
7370 | (floating-point number) | |
7371 | args -- command line which invoked the process (string). */) | |
7372 | ( Lisp_Object pid) | |
7373 | { | |
7374 | return system_process_attributes (pid); | |
7375 | } | |
7376 | ||
7377 | \f | |
b82da769 GM |
7378 | /* This is not called "init_process" because that is the name of a |
7379 | Mach system call, so it would cause problems on Darwin systems. */ | |
f388c88a | 7380 | void |
b82da769 | 7381 | init_process_emacs (void) |
f388c88a EZ |
7382 | { |
7383 | #ifdef subprocesses | |
7384 | register int i; | |
7385 | ||
7386 | inhibit_sentinels = 0; | |
7387 | ||
7388 | #ifdef SIGCHLD | |
7389 | #ifndef CANNOT_DUMP | |
7390 | if (! noninteractive || initialized) | |
7391 | #endif | |
20ef56db | 7392 | signal (SIGCHLD, deliver_child_signal); |
f388c88a EZ |
7393 | #endif |
7394 | ||
7395 | FD_ZERO (&input_wait_mask); | |
7396 | FD_ZERO (&non_keyboard_wait_mask); | |
7397 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7398 | FD_ZERO (&write_mask); |
f388c88a | 7399 | max_process_desc = 0; |
3fad2ad2 | 7400 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7401 | |
7402 | #ifdef NON_BLOCKING_CONNECT | |
7403 | FD_ZERO (&connect_wait_mask); | |
7404 | num_pending_connects = 0; | |
7405 | #endif | |
7406 | ||
7407 | #ifdef ADAPTIVE_READ_BUFFERING | |
7408 | process_output_delay_count = 0; | |
7409 | process_output_skip = 0; | |
7410 | #endif | |
7411 | ||
7412 | /* Don't do this, it caused infinite select loops. The display | |
7413 | method should call add_keyboard_wait_descriptor on stdin if it | |
7414 | needs that. */ | |
7415 | #if 0 | |
7416 | FD_SET (0, &input_wait_mask); | |
7417 | #endif | |
7418 | ||
7419 | Vprocess_alist = Qnil; | |
7420 | #ifdef SIGCHLD | |
7421 | deleted_pid_list = Qnil; | |
7422 | #endif | |
7423 | for (i = 0; i < MAXDESC; i++) | |
7424 | { | |
7425 | chan_process[i] = Qnil; | |
7426 | proc_buffered_char[i] = -1; | |
7427 | } | |
7428 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7429 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7430 | #ifdef DATAGRAM_SOCKETS | |
7431 | memset (datagram_address, 0, sizeof datagram_address); | |
7432 | #endif | |
7433 | ||
f388c88a EZ |
7434 | { |
7435 | Lisp_Object subfeatures = Qnil; | |
7436 | const struct socket_options *sopt; | |
7437 | ||
7438 | #define ADD_SUBFEATURE(key, val) \ | |
7439 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7440 | ||
7441 | #ifdef NON_BLOCKING_CONNECT | |
7442 | ADD_SUBFEATURE (QCnowait, Qt); | |
7443 | #endif | |
7444 | #ifdef DATAGRAM_SOCKETS | |
7445 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7446 | #endif | |
7447 | #ifdef HAVE_SEQPACKET | |
7448 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7449 | #endif | |
7450 | #ifdef HAVE_LOCAL_SOCKETS | |
7451 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7452 | #endif | |
7453 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7454 | #ifdef AF_INET6 | |
7455 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7456 | #endif | |
7457 | #ifdef HAVE_GETSOCKNAME | |
7458 | ADD_SUBFEATURE (QCservice, Qt); | |
7459 | #endif | |
5e617bc2 | 7460 | #if defined (O_NONBLOCK) || defined (O_NDELAY) |
f388c88a EZ |
7461 | ADD_SUBFEATURE (QCserver, Qt); |
7462 | #endif | |
7463 | ||
7464 | for (sopt = socket_options; sopt->name; sopt++) | |
7465 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7466 | ||
7467 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7468 | } | |
f388c88a EZ |
7469 | |
7470 | #if defined (DARWIN_OS) | |
7471 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7472 | processes. As such, we only change the default value. */ | |
7473 | if (initialized) | |
7474 | { | |
f44bd759 PE |
7475 | char const *release = (STRINGP (Voperating_system_release) |
7476 | ? SSDATA (Voperating_system_release) | |
7477 | : 0); | |
6de0e799 | 7478 | if (!release || !release[0] || (release[0] < '7' && release[1] == '.')) { |
f388c88a EZ |
7479 | Vprocess_connection_type = Qnil; |
7480 | } | |
7481 | } | |
7482 | #endif | |
7483 | #endif /* subprocesses */ | |
7484 | kbd_is_on_hold = 0; | |
7485 | } | |
7486 | ||
7487 | void | |
7488 | syms_of_process (void) | |
7489 | { | |
7490 | #ifdef subprocesses | |
7491 | ||
cd3520a4 JB |
7492 | DEFSYM (Qprocessp, "processp"); |
7493 | DEFSYM (Qrun, "run"); | |
7494 | DEFSYM (Qstop, "stop"); | |
7495 | DEFSYM (Qsignal, "signal"); | |
f388c88a EZ |
7496 | |
7497 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7498 | here again. | |
934e2a68 | 7499 | |
f388c88a EZ |
7500 | Qexit = intern_c_string ("exit"); |
7501 | staticpro (&Qexit); */ | |
934e2a68 | 7502 | |
cd3520a4 JB |
7503 | DEFSYM (Qopen, "open"); |
7504 | DEFSYM (Qclosed, "closed"); | |
7505 | DEFSYM (Qconnect, "connect"); | |
7506 | DEFSYM (Qfailed, "failed"); | |
7507 | DEFSYM (Qlisten, "listen"); | |
7508 | DEFSYM (Qlocal, "local"); | |
7509 | DEFSYM (Qipv4, "ipv4"); | |
f388c88a | 7510 | #ifdef AF_INET6 |
cd3520a4 JB |
7511 | DEFSYM (Qipv6, "ipv6"); |
7512 | #endif | |
7513 | DEFSYM (Qdatagram, "datagram"); | |
7514 | DEFSYM (Qseqpacket, "seqpacket"); | |
7515 | ||
7516 | DEFSYM (QCport, ":port"); | |
7517 | DEFSYM (QCspeed, ":speed"); | |
7518 | DEFSYM (QCprocess, ":process"); | |
7519 | ||
7520 | DEFSYM (QCbytesize, ":bytesize"); | |
7521 | DEFSYM (QCstopbits, ":stopbits"); | |
7522 | DEFSYM (QCparity, ":parity"); | |
7523 | DEFSYM (Qodd, "odd"); | |
7524 | DEFSYM (Qeven, "even"); | |
7525 | DEFSYM (QCflowcontrol, ":flowcontrol"); | |
7526 | DEFSYM (Qhw, "hw"); | |
7527 | DEFSYM (Qsw, "sw"); | |
7528 | DEFSYM (QCsummary, ":summary"); | |
7529 | ||
7530 | DEFSYM (Qreal, "real"); | |
7531 | DEFSYM (Qnetwork, "network"); | |
7532 | DEFSYM (Qserial, "serial"); | |
7533 | DEFSYM (QCbuffer, ":buffer"); | |
7534 | DEFSYM (QChost, ":host"); | |
7535 | DEFSYM (QCservice, ":service"); | |
7536 | DEFSYM (QClocal, ":local"); | |
7537 | DEFSYM (QCremote, ":remote"); | |
7538 | DEFSYM (QCcoding, ":coding"); | |
7539 | DEFSYM (QCserver, ":server"); | |
7540 | DEFSYM (QCnowait, ":nowait"); | |
7541 | DEFSYM (QCsentinel, ":sentinel"); | |
7542 | DEFSYM (QClog, ":log"); | |
7543 | DEFSYM (QCnoquery, ":noquery"); | |
7544 | DEFSYM (QCstop, ":stop"); | |
7545 | DEFSYM (QCoptions, ":options"); | |
7546 | DEFSYM (QCplist, ":plist"); | |
7547 | ||
7548 | DEFSYM (Qlast_nonmenu_event, "last-nonmenu-event"); | |
934e2a68 | 7549 | |
f388c88a EZ |
7550 | staticpro (&Vprocess_alist); |
7551 | #ifdef SIGCHLD | |
7552 | staticpro (&deleted_pid_list); | |
7553 | #endif | |
934e2a68 | 7554 | |
f388c88a | 7555 | #endif /* subprocesses */ |
6720a7fb | 7556 | |
cd3520a4 JB |
7557 | DEFSYM (QCname, ":name"); |
7558 | DEFSYM (QCtype, ":type"); | |
7559 | ||
7560 | DEFSYM (Qeuid, "euid"); | |
7561 | DEFSYM (Qegid, "egid"); | |
7562 | DEFSYM (Quser, "user"); | |
7563 | DEFSYM (Qgroup, "group"); | |
7564 | DEFSYM (Qcomm, "comm"); | |
7565 | DEFSYM (Qstate, "state"); | |
7566 | DEFSYM (Qppid, "ppid"); | |
7567 | DEFSYM (Qpgrp, "pgrp"); | |
7568 | DEFSYM (Qsess, "sess"); | |
7569 | DEFSYM (Qttname, "ttname"); | |
7570 | DEFSYM (Qtpgid, "tpgid"); | |
7571 | DEFSYM (Qminflt, "minflt"); | |
7572 | DEFSYM (Qmajflt, "majflt"); | |
7573 | DEFSYM (Qcminflt, "cminflt"); | |
7574 | DEFSYM (Qcmajflt, "cmajflt"); | |
7575 | DEFSYM (Qutime, "utime"); | |
7576 | DEFSYM (Qstime, "stime"); | |
7577 | DEFSYM (Qtime, "time"); | |
7578 | DEFSYM (Qcutime, "cutime"); | |
7579 | DEFSYM (Qcstime, "cstime"); | |
7580 | DEFSYM (Qctime, "ctime"); | |
7581 | DEFSYM (Qpri, "pri"); | |
7582 | DEFSYM (Qnice, "nice"); | |
7583 | DEFSYM (Qthcount, "thcount"); | |
7584 | DEFSYM (Qstart, "start"); | |
7585 | DEFSYM (Qvsize, "vsize"); | |
7586 | DEFSYM (Qrss, "rss"); | |
7587 | DEFSYM (Qetime, "etime"); | |
7588 | DEFSYM (Qpcpu, "pcpu"); | |
7589 | DEFSYM (Qpmem, "pmem"); | |
7590 | DEFSYM (Qargs, "args"); | |
9057ff80 | 7591 | |
29208e82 | 7592 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
fb7ada5f | 7593 | doc: /* Non-nil means delete processes immediately when they exit. |
f388c88a EZ |
7594 | A value of nil means don't delete them until `list-processes' is run. */); |
7595 | ||
7596 | delete_exited_processes = 1; | |
7597 | ||
462aa963 | 7598 | #ifdef subprocesses |
29208e82 | 7599 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7600 | doc: /* Control type of device used to communicate with subprocesses. |
7601 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7602 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7603 | then a pipe is used in any case. | |
7604 | The value takes effect when `start-process' is called. */); | |
7605 | Vprocess_connection_type = Qt; | |
7606 | ||
7607 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7608 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7609 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7610 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7611 | is read in very small blocks, potentially resulting in very poor performance. | |
7612 | This behavior can be remedied to some extent by setting this variable to a | |
7613 | non-nil value, as it will automatically delay reading from such processes, to | |
7614 | allow them to produce more output before Emacs tries to read it. | |
7615 | If the value is t, the delay is reset after each write to the process; any other | |
7616 | non-nil value means that the delay is not reset on write. | |
7617 | The variable takes effect when `start-process' is called. */); | |
7618 | Vprocess_adaptive_read_buffering = Qt; | |
7619 | #endif | |
7620 | ||
7621 | defsubr (&Sprocessp); | |
7622 | defsubr (&Sget_process); | |
7623 | defsubr (&Sdelete_process); | |
7624 | defsubr (&Sprocess_status); | |
7625 | defsubr (&Sprocess_exit_status); | |
7626 | defsubr (&Sprocess_id); | |
7627 | defsubr (&Sprocess_name); | |
7628 | defsubr (&Sprocess_tty_name); | |
7629 | defsubr (&Sprocess_command); | |
7630 | defsubr (&Sset_process_buffer); | |
7631 | defsubr (&Sprocess_buffer); | |
7632 | defsubr (&Sprocess_mark); | |
7633 | defsubr (&Sset_process_filter); | |
7634 | defsubr (&Sprocess_filter); | |
7635 | defsubr (&Sset_process_sentinel); | |
7636 | defsubr (&Sprocess_sentinel); | |
7637 | defsubr (&Sset_process_window_size); | |
7638 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7639 | defsubr (&Sset_process_query_on_exit_flag); | |
7640 | defsubr (&Sprocess_query_on_exit_flag); | |
7641 | defsubr (&Sprocess_contact); | |
7642 | defsubr (&Sprocess_plist); | |
7643 | defsubr (&Sset_process_plist); | |
f388c88a EZ |
7644 | defsubr (&Sprocess_list); |
7645 | defsubr (&Sstart_process); | |
f388c88a EZ |
7646 | defsubr (&Sserial_process_configure); |
7647 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7648 | defsubr (&Sset_network_process_option); |
7649 | defsubr (&Smake_network_process); | |
7650 | defsubr (&Sformat_network_address); | |
5e617bc2 | 7651 | #if defined (HAVE_NET_IF_H) |
f388c88a EZ |
7652 | #ifdef SIOCGIFCONF |
7653 | defsubr (&Snetwork_interface_list); | |
7654 | #endif | |
5e617bc2 | 7655 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
f388c88a EZ |
7656 | defsubr (&Snetwork_interface_info); |
7657 | #endif | |
5e617bc2 | 7658 | #endif /* defined (HAVE_NET_IF_H) */ |
f388c88a EZ |
7659 | #ifdef DATAGRAM_SOCKETS |
7660 | defsubr (&Sprocess_datagram_address); | |
7661 | defsubr (&Sset_process_datagram_address); | |
7662 | #endif | |
7663 | defsubr (&Saccept_process_output); | |
7664 | defsubr (&Sprocess_send_region); | |
7665 | defsubr (&Sprocess_send_string); | |
7666 | defsubr (&Sinterrupt_process); | |
7667 | defsubr (&Skill_process); | |
7668 | defsubr (&Squit_process); | |
7669 | defsubr (&Sstop_process); | |
7670 | defsubr (&Scontinue_process); | |
7671 | defsubr (&Sprocess_running_child_p); | |
7672 | defsubr (&Sprocess_send_eof); | |
7673 | defsubr (&Ssignal_process); | |
7674 | defsubr (&Swaiting_for_user_input_p); | |
7675 | defsubr (&Sprocess_type); | |
7676 | defsubr (&Sset_process_coding_system); | |
7677 | defsubr (&Sprocess_coding_system); | |
7678 | defsubr (&Sset_process_filter_multibyte); | |
7679 | defsubr (&Sprocess_filter_multibyte_p); | |
7680 | ||
7681 | #endif /* subprocesses */ | |
7682 | ||
6720a7fb | 7683 | defsubr (&Sget_buffer_process); |
52a1b894 | 7684 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7685 | defsubr (&Slist_system_processes); |
a20878b6 | 7686 | defsubr (&Sprocess_attributes); |
6720a7fb | 7687 | } |