Commit | Line | Data |
---|---|---|
d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
95df8112 | 2 | |
ab422c4d PE |
3 | Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2013 Free Software |
4 | Foundation, Inc. | |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
d0d6b7c5 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
d0d6b7c5 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d0d6b7c5 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
6a09a33b PE |
23 | |
24 | #define PROCESS_INLINE EXTERN_INLINE | |
25 | ||
d0d6b7c5 JB |
26 | #include <stdio.h> |
27 | #include <errno.h> | |
6c60eb9f | 28 | #include <sys/types.h> /* Some typedefs are used in sys/file.h. */ |
d0d6b7c5 JB |
29 | #include <sys/file.h> |
30 | #include <sys/stat.h> | |
93b4f699 | 31 | #include <unistd.h> |
e98d950b | 32 | #include <fcntl.h> |
e98d950b | 33 | |
0898ca10 JB |
34 | #include "lisp.h" |
35 | ||
f388c88a EZ |
36 | /* Only MS-DOS does not define `subprocesses'. */ |
37 | #ifdef subprocesses | |
38 | ||
d0d6b7c5 JB |
39 | #include <sys/socket.h> |
40 | #include <netdb.h> | |
41 | #include <netinet/in.h> | |
42 | #include <arpa/inet.h> | |
e690ca94 KS |
43 | |
44 | /* Are local (unix) sockets supported? */ | |
4624371d | 45 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
46 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
47 | #define AF_LOCAL AF_UNIX | |
48 | #endif | |
49 | #ifdef AF_LOCAL | |
50 | #define HAVE_LOCAL_SOCKETS | |
51 | #include <sys/un.h> | |
52 | #endif | |
53 | #endif | |
d0d6b7c5 | 54 | |
d0d6b7c5 | 55 | #include <sys/ioctl.h> |
5e617bc2 | 56 | #if defined (HAVE_NET_IF_H) |
32bc6709 DN |
57 | #include <net/if.h> |
58 | #endif /* HAVE_NET_IF_H */ | |
d0d6b7c5 | 59 | |
5e617bc2 | 60 | #if defined (HAVE_IFADDRS_H) |
377538cb JD |
61 | /* Must be after net/if.h */ |
62 | #include <ifaddrs.h> | |
63 | ||
64 | /* We only use structs from this header when we use getifaddrs. */ | |
5e617bc2 | 65 | #if defined (HAVE_NET_IF_DL_H) |
377538cb JD |
66 | #include <net/if_dl.h> |
67 | #endif | |
68 | ||
69 | #endif | |
70 | ||
d0d6b7c5 JB |
71 | #ifdef NEED_BSDTTY |
72 | #include <bsdtty.h> | |
73 | #endif | |
74 | ||
4a4bbad2 PE |
75 | #ifdef USG5_4 |
76 | # include <sys/stream.h> | |
77 | # include <sys/stropts.h> | |
78 | #endif | |
79 | ||
08116b48 CY |
80 | #ifdef HAVE_RES_INIT |
81 | #include <netinet/in.h> | |
82 | #include <arpa/nameser.h> | |
83 | #include <resolv.h> | |
84 | #endif | |
85 | ||
3d608a86 J |
86 | #ifdef HAVE_UTIL_H |
87 | #include <util.h> | |
88 | #endif | |
89 | ||
9bf58201 DN |
90 | #ifdef HAVE_PTY_H |
91 | #include <pty.h> | |
92 | #endif | |
93 | ||
d983a10b PE |
94 | #include <c-ctype.h> |
95 | #include <sig2str.h> | |
96 | ||
f388c88a EZ |
97 | #endif /* subprocesses */ |
98 | ||
d0d6b7c5 | 99 | #include "systime.h" |
36ebaafa | 100 | #include "systty.h" |
d0d6b7c5 | 101 | |
d0d6b7c5 | 102 | #include "window.h" |
5bbf78c1 | 103 | #include "character.h" |
e5560ff7 | 104 | #include "buffer.h" |
0fa1789e | 105 | #include "coding.h" |
d0d6b7c5 | 106 | #include "process.h" |
428a555e | 107 | #include "frame.h" |
d0d6b7c5 JB |
108 | #include "termhooks.h" |
109 | #include "termopts.h" | |
110 | #include "commands.h" | |
3ec68006 | 111 | #include "keyboard.h" |
ececcbec | 112 | #include "blockinput.h" |
dfcf069d | 113 | #include "dispextern.h" |
e0016554 | 114 | #include "composite.h" |
30904ab7 | 115 | #include "atimer.h" |
f388c88a EZ |
116 | #include "sysselect.h" |
117 | #include "syssignal.h" | |
118 | #include "syswait.h" | |
8af55556 TZ |
119 | #ifdef HAVE_GNUTLS |
120 | #include "gnutls.h" | |
121 | #endif | |
d0d6b7c5 | 122 | |
17a2cbbd DC |
123 | #ifdef HAVE_WINDOW_SYSTEM |
124 | #include TERM_HEADER | |
125 | #endif /* HAVE_WINDOW_SYSTEM */ | |
126 | ||
69f60cdc | 127 | #ifdef HAVE_GLIB |
872870b2 | 128 | #include "xgselect.h" |
69f60cdc JD |
129 | #ifndef WINDOWSNT |
130 | #include <glib.h> | |
131 | #endif | |
0949d2b6 | 132 | #endif |
57507bf8 | 133 | |
a68089e4 EZ |
134 | #ifdef WINDOWSNT |
135 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
136 | EMACS_TIME *, void *); | |
137 | #endif | |
138 | ||
b8df54ff PE |
139 | /* Work around GCC 4.7.0 bug with strict overflow checking; see |
140 | <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>. | |
141 | These lines can be removed once the GCC bug is fixed. */ | |
908589fd | 142 | #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) |
b8df54ff PE |
143 | # pragma GCC diagnostic ignored "-Wstrict-overflow" |
144 | #endif | |
145 | ||
fdb183d6 DN |
146 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
147 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
148 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
149 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
150 | Lisp_Object QCname, QCtype; | |
151 | \f | |
0bce5d9e | 152 | /* True if keyboard input is on hold, zero otherwise. */ |
fdb183d6 | 153 | |
0bce5d9e | 154 | static bool kbd_is_on_hold; |
fdb183d6 | 155 | |
fdb183d6 DN |
156 | /* Nonzero means don't run process sentinels. This is used |
157 | when exiting. */ | |
0bce5d9e | 158 | bool inhibit_sentinels; |
fdb183d6 | 159 | |
f388c88a EZ |
160 | #ifdef subprocesses |
161 | ||
dd2281ae | 162 | Lisp_Object Qprocessp; |
955cbe7b PE |
163 | static Lisp_Object Qrun, Qstop, Qsignal; |
164 | static Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; | |
165 | Lisp_Object Qlocal; | |
166 | static Lisp_Object Qipv4, Qdatagram, Qseqpacket; | |
167 | static Lisp_Object Qreal, Qnetwork, Qserial; | |
e1652a86 | 168 | #ifdef AF_INET6 |
955cbe7b | 169 | static Lisp_Object Qipv6; |
e1652a86 | 170 | #endif |
955cbe7b PE |
171 | static Lisp_Object QCport, QCprocess; |
172 | Lisp_Object QCspeed; | |
d888760c GM |
173 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; |
174 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
955cbe7b PE |
175 | static Lisp_Object QCbuffer, QChost, QCservice; |
176 | static Lisp_Object QClocal, QCremote, QCcoding; | |
177 | static Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; | |
178 | static Lisp_Object QCsentinel, QClog, QCoptions, QCplist; | |
179 | static Lisp_Object Qlast_nonmenu_event; | |
1aa8d505 SM |
180 | static Lisp_Object Qinternal_default_process_sentinel; |
181 | static Lisp_Object Qinternal_default_process_filter; | |
e0f712ba | 182 | |
4d2b044c DA |
183 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
184 | #define NETCONN1_P(p) (EQ (p->type, Qnetwork)) | |
185 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
186 | #define SERIALCONN1_P(p) (EQ (p->type, Qserial)) | |
d0d6b7c5 | 187 | |
d0d6b7c5 | 188 | /* Number of events of change of status of a process. */ |
e4d81efc | 189 | static EMACS_INT process_tick; |
d0d6b7c5 | 190 | /* Number of events for which the user or sentinel has been notified. */ |
e4d81efc | 191 | static EMACS_INT update_tick; |
d0d6b7c5 | 192 | |
dd2a17ab KS |
193 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
194 | ||
82d6e50b | 195 | /* Only W32 has this, it really means that select can't take write mask. */ |
dd2a17ab KS |
196 | #ifdef BROKEN_NON_BLOCKING_CONNECT |
197 | #undef NON_BLOCKING_CONNECT | |
82d6e50b | 198 | #define SELECT_CANT_DO_WRITE_MASK |
dd2a17ab KS |
199 | #else |
200 | #ifndef NON_BLOCKING_CONNECT | |
dd2a17ab KS |
201 | #ifdef HAVE_SELECT |
202 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
dd2a17ab KS |
203 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) |
204 | #define NON_BLOCKING_CONNECT | |
205 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
dd2a17ab KS |
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 | ||
4a4bbad2 PE |
216 | #ifndef BROKEN_DATAGRAM_SOCKETS |
217 | # if defined HAVE_SELECT || defined USABLE_FIONREAD | |
218 | # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE | |
219 | # define DATAGRAM_SOCKETS | |
220 | # endif | |
221 | # endif | |
222 | #endif | |
e690ca94 | 223 | |
f00c449b SM |
224 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
225 | # define HAVE_SEQPACKET | |
226 | #endif | |
227 | ||
6b61353c | 228 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
6b61353c KH |
229 | #define ADAPTIVE_READ_BUFFERING |
230 | #endif | |
6b61353c KH |
231 | |
232 | #ifdef ADAPTIVE_READ_BUFFERING | |
d35af63c | 233 | #define READ_OUTPUT_DELAY_INCREMENT (EMACS_TIME_RESOLUTION / 100) |
6b61353c KH |
234 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) |
235 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
236 | ||
db853b7a KS |
237 | /* Number of processes which have a non-zero read_output_delay, |
238 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
239 | |
240 | static int process_output_delay_count; | |
241 | ||
0bce5d9e | 242 | /* True if any process has non-nil read_output_skip. */ |
6b61353c | 243 | |
0bce5d9e | 244 | static bool process_output_skip; |
6b61353c | 245 | |
6b61353c KH |
246 | #else |
247 | #define process_output_delay_count 0 | |
248 | #endif | |
249 | ||
40ccffa6 | 250 | static void create_process (Lisp_Object, char **, Lisp_Object); |
4a4bbad2 | 251 | #ifdef USABLE_SIGIO |
0bce5d9e | 252 | static bool keyboard_bit_set (SELECT_TYPE *); |
006c5daa | 253 | #endif |
f57e2426 J |
254 | static void deactivate_process (Lisp_Object); |
255 | static void status_notify (struct Lisp_Process *); | |
256 | static int read_process_output (Lisp_Object, int); | |
4d7e6e51 | 257 | static void handle_child_signal (int); |
f57e2426 | 258 | static void create_pty (Lisp_Object); |
41d03b9a | 259 | |
583dcae4 | 260 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 261 | to detect C-g. It isn't actually used when doing interrupt input. */ |
4d7e6e51 | 262 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
263 | #define POLL_FOR_INPUT |
264 | #endif | |
265 | ||
d3da34e0 JB |
266 | static Lisp_Object get_process (register Lisp_Object name); |
267 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 268 | |
f388c88a EZ |
269 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
270 | ||
271 | static SELECT_TYPE input_wait_mask; | |
272 | ||
994d9841 | 273 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
274 | |
275 | static SELECT_TYPE non_keyboard_wait_mask; | |
276 | ||
994d9841 | 277 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
278 | |
279 | static SELECT_TYPE non_process_wait_mask; | |
280 | ||
3fad2ad2 | 281 | /* Mask for selecting for write. */ |
994d9841 | 282 | |
3fad2ad2 | 283 | static SELECT_TYPE write_mask; |
994d9841 | 284 | |
bad49fc7 | 285 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
286 | /* Mask of bits indicating the descriptors that we wait for connect to |
287 | complete on. Once they complete, they are removed from this mask | |
288 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
289 | ||
290 | static SELECT_TYPE connect_wait_mask; | |
291 | ||
292 | /* Number of bits set in connect_wait_mask. */ | |
293 | static int num_pending_connects; | |
f388c88a | 294 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 295 | |
7d0e672e RS |
296 | /* The largest descriptor currently in use for a process object. */ |
297 | static int max_process_desc; | |
298 | ||
3fad2ad2 J |
299 | /* The largest descriptor currently in use for input. */ |
300 | static int max_input_desc; | |
994d9841 | 301 | |
d0d6b7c5 | 302 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
40ccffa6 | 303 | static Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
304 | |
305 | /* Alist of elements (NAME . PROCESS) */ | |
40ccffa6 | 306 | static Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
307 | |
308 | /* Buffered-ahead input char from process, indexed by channel. | |
309 | -1 means empty (no char is buffered). | |
310 | Used on sys V where the only way to tell if there is any | |
311 | output from the process is to read at least one char. | |
312 | Always -1 on systems that support FIONREAD. */ | |
313 | ||
40ccffa6 | 314 | static int proc_buffered_char[MAXDESC]; |
dd2281ae | 315 | |
0fa1789e | 316 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
317 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
318 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 319 | |
e690ca94 KS |
320 | #ifdef DATAGRAM_SOCKETS |
321 | /* Table of `partner address' for datagram sockets. */ | |
40ccffa6 | 322 | static struct sockaddr_and_len { |
e690ca94 KS |
323 | struct sockaddr *sa; |
324 | int len; | |
325 | } datagram_address[MAXDESC]; | |
326 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 327 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
328 | #else |
329 | #define DATAGRAM_CHAN_P(chan) (0) | |
330 | #define DATAGRAM_CONN_P(proc) (0) | |
331 | #endif | |
332 | ||
6a09a33b | 333 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 334 | static void |
6a09a33b PE |
335 | pset_buffer (struct Lisp_Process *p, Lisp_Object val) |
336 | { | |
337 | p->buffer = val; | |
338 | } | |
b0ab8123 | 339 | static void |
6a09a33b PE |
340 | pset_command (struct Lisp_Process *p, Lisp_Object val) |
341 | { | |
342 | p->command = val; | |
343 | } | |
b0ab8123 | 344 | static void |
6a09a33b PE |
345 | pset_decode_coding_system (struct Lisp_Process *p, Lisp_Object val) |
346 | { | |
347 | p->decode_coding_system = val; | |
348 | } | |
b0ab8123 | 349 | static void |
6a09a33b PE |
350 | pset_decoding_buf (struct Lisp_Process *p, Lisp_Object val) |
351 | { | |
352 | p->decoding_buf = val; | |
353 | } | |
b0ab8123 | 354 | static void |
6a09a33b PE |
355 | pset_encode_coding_system (struct Lisp_Process *p, Lisp_Object val) |
356 | { | |
357 | p->encode_coding_system = val; | |
358 | } | |
b0ab8123 | 359 | static void |
6a09a33b PE |
360 | pset_encoding_buf (struct Lisp_Process *p, Lisp_Object val) |
361 | { | |
362 | p->encoding_buf = val; | |
363 | } | |
b0ab8123 | 364 | static void |
6a09a33b PE |
365 | pset_filter (struct Lisp_Process *p, Lisp_Object val) |
366 | { | |
1aa8d505 | 367 | p->filter = NILP (val) ? Qinternal_default_process_filter : val; |
6a09a33b | 368 | } |
b0ab8123 | 369 | static void |
6a09a33b PE |
370 | pset_log (struct Lisp_Process *p, Lisp_Object val) |
371 | { | |
372 | p->log = val; | |
373 | } | |
b0ab8123 | 374 | static void |
6a09a33b PE |
375 | pset_mark (struct Lisp_Process *p, Lisp_Object val) |
376 | { | |
377 | p->mark = val; | |
378 | } | |
b0ab8123 | 379 | static void |
6a09a33b PE |
380 | pset_name (struct Lisp_Process *p, Lisp_Object val) |
381 | { | |
382 | p->name = val; | |
383 | } | |
b0ab8123 | 384 | static void |
6a09a33b PE |
385 | pset_plist (struct Lisp_Process *p, Lisp_Object val) |
386 | { | |
387 | p->plist = val; | |
388 | } | |
b0ab8123 | 389 | static void |
6a09a33b PE |
390 | pset_sentinel (struct Lisp_Process *p, Lisp_Object val) |
391 | { | |
1aa8d505 | 392 | p->sentinel = NILP (val) ? Qinternal_default_process_sentinel : val; |
6a09a33b | 393 | } |
b0ab8123 | 394 | static void |
6a09a33b PE |
395 | pset_status (struct Lisp_Process *p, Lisp_Object val) |
396 | { | |
397 | p->status = val; | |
398 | } | |
b0ab8123 | 399 | static void |
6a09a33b PE |
400 | pset_tty_name (struct Lisp_Process *p, Lisp_Object val) |
401 | { | |
402 | p->tty_name = val; | |
403 | } | |
b0ab8123 | 404 | static void |
6a09a33b PE |
405 | pset_type (struct Lisp_Process *p, Lisp_Object val) |
406 | { | |
407 | p->type = val; | |
408 | } | |
b0ab8123 | 409 | static void |
6a09a33b PE |
410 | pset_write_queue (struct Lisp_Process *p, Lisp_Object val) |
411 | { | |
412 | p->write_queue = val; | |
413 | } | |
414 | ||
d0d6b7c5 | 415 | \f |
3fad2ad2 | 416 | |
40ccffa6 | 417 | static struct fd_callback_data |
3fad2ad2 J |
418 | { |
419 | fd_callback func; | |
420 | void *data; | |
421 | #define FOR_READ 1 | |
422 | #define FOR_WRITE 2 | |
423 | int condition; /* mask of the defines above. */ | |
424 | } fd_callback_info[MAXDESC]; | |
425 | ||
426 | ||
427 | /* Add a file descriptor FD to be monitored for when read is possible. | |
428 | When read is possible, call FUNC with argument DATA. */ | |
429 | ||
430 | void | |
431 | add_read_fd (int fd, fd_callback func, void *data) | |
432 | { | |
a54e2c05 | 433 | eassert (fd < MAXDESC); |
3fad2ad2 J |
434 | add_keyboard_wait_descriptor (fd); |
435 | ||
436 | fd_callback_info[fd].func = func; | |
437 | fd_callback_info[fd].data = data; | |
438 | fd_callback_info[fd].condition |= FOR_READ; | |
439 | } | |
440 | ||
441 | /* Stop monitoring file descriptor FD for when read is possible. */ | |
442 | ||
443 | void | |
444 | delete_read_fd (int fd) | |
445 | { | |
a54e2c05 | 446 | eassert (fd < MAXDESC); |
3fad2ad2 J |
447 | delete_keyboard_wait_descriptor (fd); |
448 | ||
449 | fd_callback_info[fd].condition &= ~FOR_READ; | |
450 | if (fd_callback_info[fd].condition == 0) | |
451 | { | |
452 | fd_callback_info[fd].func = 0; | |
453 | fd_callback_info[fd].data = 0; | |
454 | } | |
455 | } | |
456 | ||
457 | /* Add a file descriptor FD to be monitored for when write is possible. | |
458 | When write is possible, call FUNC with argument DATA. */ | |
459 | ||
460 | void | |
461 | add_write_fd (int fd, fd_callback func, void *data) | |
462 | { | |
a54e2c05 | 463 | eassert (fd < MAXDESC); |
3fad2ad2 J |
464 | FD_SET (fd, &write_mask); |
465 | if (fd > max_input_desc) | |
466 | max_input_desc = fd; | |
467 | ||
468 | fd_callback_info[fd].func = func; | |
469 | fd_callback_info[fd].data = data; | |
470 | fd_callback_info[fd].condition |= FOR_WRITE; | |
471 | } | |
472 | ||
473 | /* Stop monitoring file descriptor FD for when write is possible. */ | |
474 | ||
475 | void | |
476 | delete_write_fd (int fd) | |
477 | { | |
478 | int lim = max_input_desc; | |
479 | ||
a54e2c05 | 480 | eassert (fd < MAXDESC); |
3fad2ad2 J |
481 | FD_CLR (fd, &write_mask); |
482 | fd_callback_info[fd].condition &= ~FOR_WRITE; | |
483 | if (fd_callback_info[fd].condition == 0) | |
484 | { | |
485 | fd_callback_info[fd].func = 0; | |
486 | fd_callback_info[fd].data = 0; | |
487 | ||
488 | if (fd == max_input_desc) | |
489 | for (fd = lim; fd >= 0; fd--) | |
490 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) | |
491 | { | |
492 | max_input_desc = fd; | |
493 | break; | |
494 | } | |
51b59d79 | 495 | |
3fad2ad2 J |
496 | } |
497 | } | |
498 | ||
499 | \f | |
d0d6b7c5 JB |
500 | /* Compute the Lisp form of the process status, p->status, from |
501 | the numeric status that was returned by `wait'. */ | |
502 | ||
bba104c1 | 503 | static Lisp_Object status_convert (int); |
f9738840 | 504 | |
ff6daed3 | 505 | static void |
d3da34e0 | 506 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 507 | { |
6bfd98e7 | 508 | eassert (p->raw_status_new); |
6a09a33b | 509 | pset_status (p, status_convert (p->raw_status)); |
6bfd98e7 | 510 | p->raw_status_new = 0; |
d0d6b7c5 JB |
511 | } |
512 | ||
177c0ea7 | 513 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
514 | the list that we use internally. */ |
515 | ||
ff6daed3 | 516 | static Lisp_Object |
bba104c1 | 517 | status_convert (int w) |
d0d6b7c5 JB |
518 | { |
519 | if (WIFSTOPPED (w)) | |
520 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
521 | else if (WIFEXITED (w)) | |
13294f95 | 522 | return Fcons (Qexit, Fcons (make_number (WEXITSTATUS (w)), |
d0d6b7c5 JB |
523 | WCOREDUMP (w) ? Qt : Qnil)); |
524 | else if (WIFSIGNALED (w)) | |
525 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
526 | WCOREDUMP (w) ? Qt : Qnil)); | |
527 | else | |
528 | return Qrun; | |
529 | } | |
530 | ||
531 | /* Given a status-list, extract the three pieces of information | |
532 | and store them individually through the three pointers. */ | |
533 | ||
ff6daed3 | 534 | static void |
0bce5d9e | 535 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, bool *coredump) |
d0d6b7c5 JB |
536 | { |
537 | Lisp_Object tem; | |
538 | ||
bcd69aea | 539 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
540 | { |
541 | *symbol = l; | |
542 | *code = 0; | |
543 | *coredump = 0; | |
544 | } | |
545 | else | |
546 | { | |
70949dac KR |
547 | *symbol = XCAR (l); |
548 | tem = XCDR (l); | |
549 | *code = XFASTINT (XCAR (tem)); | |
550 | tem = XCDR (tem); | |
d0d6b7c5 JB |
551 | *coredump = !NILP (tem); |
552 | } | |
553 | } | |
554 | ||
555 | /* Return a string describing a process status list. */ | |
556 | ||
116c423c | 557 | static Lisp_Object |
d3da34e0 | 558 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 559 | { |
4d2b044c | 560 | Lisp_Object status = p->status; |
d0d6b7c5 | 561 | Lisp_Object symbol; |
0bce5d9e PE |
562 | int code; |
563 | bool coredump; | |
d0d6b7c5 JB |
564 | Lisp_Object string, string2; |
565 | ||
566 | decode_status (status, &symbol, &code, &coredump); | |
567 | ||
568 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
569 | { | |
aa1ba90e | 570 | char const *signame; |
ca9c0567 | 571 | synchronize_system_messages_locale (); |
68c45bf0 | 572 | signame = strsignal (code); |
b97ad9ea | 573 | if (signame == 0) |
66bd43d1 KH |
574 | string = build_string ("unknown"); |
575 | else | |
576 | { | |
577 | int c1, c2; | |
578 | ||
d7ea76b4 | 579 | string = build_unibyte_string (signame); |
66bd43d1 KH |
580 | if (! NILP (Vlocale_coding_system)) |
581 | string = (code_convert_string_norecord | |
582 | (string, Vlocale_coding_system, 0)); | |
42a5b22f | 583 | c1 = STRING_CHAR (SDATA (string)); |
5da9919f | 584 | c2 = downcase (c1); |
66bd43d1 | 585 | if (c1 != c2) |
4735b74e | 586 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 587 | } |
d0d6b7c5 | 588 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
589 | return concat2 (string, string2); |
590 | } | |
591 | else if (EQ (symbol, Qexit)) | |
592 | { | |
116c423c KS |
593 | if (NETCONN1_P (p)) |
594 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
595 | if (code == 0) |
596 | return build_string ("finished\n"); | |
f2980264 | 597 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 598 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
599 | return concat3 (build_string ("exited abnormally with code "), |
600 | string, string2); | |
d0d6b7c5 | 601 | } |
dd2a17ab KS |
602 | else if (EQ (symbol, Qfailed)) |
603 | { | |
604 | string = Fnumber_to_string (make_number (code)); | |
605 | string2 = build_string ("\n"); | |
e690ca94 KS |
606 | return concat3 (build_string ("failed with code "), |
607 | string, string2); | |
dd2a17ab | 608 | } |
d0d6b7c5 JB |
609 | else |
610 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
611 | } | |
612 | \f | |
613 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 614 | |
9bf58201 DN |
615 | /* The file name of the pty opened by allocate_pty. */ |
616 | static char pty_name[24]; | |
617 | ||
875e6b94 KH |
618 | /* Open an available pty, returning a file descriptor. |
619 | Return -1 on failure. | |
620 | The file name of the terminal corresponding to the pty | |
621 | is left in the variable pty_name. */ | |
622 | ||
ff6daed3 | 623 | static int |
d3da34e0 | 624 | allocate_pty (void) |
d0d6b7c5 | 625 | { |
d0d6b7c5 JB |
626 | int fd; |
627 | ||
628 | #ifdef PTY_ITERATION | |
629 | PTY_ITERATION | |
630 | #else | |
be02381c | 631 | register int c, i; |
d0d6b7c5 JB |
632 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) |
633 | for (i = 0; i < 16; i++) | |
634 | #endif | |
635 | { | |
636 | #ifdef PTY_NAME_SPRINTF | |
637 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
638 | #else |
639 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
640 | #endif /* no PTY_NAME_SPRINTF */ |
641 | ||
4d7c105e RS |
642 | #ifdef PTY_OPEN |
643 | PTY_OPEN; | |
644 | #else /* no PTY_OPEN */ | |
49cdacda | 645 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); |
4d7c105e | 646 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
647 | |
648 | if (fd >= 0) | |
649 | { | |
650 | /* check to make certain that both sides are available | |
651 | this avoids a nasty yet stupid bug in rlogins */ | |
652 | #ifdef PTY_TTY_NAME_SPRINTF | |
653 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 654 | #else |
63136da6 | 655 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 656 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
73dcdb9f | 657 | if (faccessat (AT_FDCWD, pty_name, R_OK | W_OK, AT_EACCESS) != 0) |
d0d6b7c5 | 658 | { |
68c45bf0 | 659 | emacs_close (fd); |
132d0475 | 660 | # ifndef __sgi |
d0d6b7c5 | 661 | continue; |
34967d0f | 662 | # else |
d0d6b7c5 | 663 | return -1; |
132d0475 | 664 | # endif /* __sgi */ |
d0d6b7c5 | 665 | } |
d0d6b7c5 JB |
666 | setup_pty (fd); |
667 | return fd; | |
668 | } | |
669 | } | |
670 | return -1; | |
671 | } | |
672 | #endif /* HAVE_PTYS */ | |
673 | \f | |
ff6daed3 | 674 | static Lisp_Object |
d3da34e0 | 675 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
676 | { |
677 | register Lisp_Object val, tem, name1; | |
678 | register struct Lisp_Process *p; | |
31c286f7 PE |
679 | char suffix[sizeof "<>" + INT_STRLEN_BOUND (printmax_t)]; |
680 | printmax_t i; | |
d0d6b7c5 | 681 | |
98423852 | 682 | p = allocate_process (); |
62efea5e DA |
683 | /* Initialize Lisp data. Note that allocate_process initializes all |
684 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
6a09a33b PE |
685 | pset_status (p, Qrun); |
686 | pset_mark (p, Fmake_marker ()); | |
d0d6b7c5 | 687 | |
62efea5e DA |
688 | /* Initialize non-Lisp data. Note that allocate_process zeroes out all |
689 | non-Lisp data, so do it only for slots which should not be zero. */ | |
690 | p->infd = -1; | |
691 | p->outfd = -1; | |
6b61353c | 692 | |
8af55556 TZ |
693 | #ifdef HAVE_GNUTLS |
694 | p->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
695 | #endif | |
696 | ||
d0d6b7c5 JB |
697 | /* If name is already in use, modify it until it is unused. */ |
698 | ||
699 | name1 = name; | |
700 | for (i = 1; ; i++) | |
701 | { | |
702 | tem = Fget_process (name1); | |
703 | if (NILP (tem)) break; | |
a8290ec3 | 704 | name1 = concat2 (name, make_formatted_string (suffix, "<%"pMd">", i)); |
d0d6b7c5 JB |
705 | } |
706 | name = name1; | |
6a09a33b | 707 | pset_name (p, name); |
1aa8d505 SM |
708 | pset_sentinel (p, Qinternal_default_process_sentinel); |
709 | pset_filter (p, Qinternal_default_process_filter); | |
23d6bb9c | 710 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
711 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
712 | return val; | |
713 | } | |
714 | ||
ff6daed3 | 715 | static void |
d3da34e0 | 716 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
717 | { |
718 | register Lisp_Object pair; | |
719 | ||
720 | pair = Frassq (proc, Vprocess_alist); | |
721 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
722 | |
723 | deactivate_process (proc); | |
724 | } | |
03f04413 | 725 | |
d0d6b7c5 JB |
726 | \f |
727 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 728 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 729 | (Lisp_Object object) |
d0d6b7c5 | 730 | { |
4ee3e309 | 731 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
732 | } |
733 | ||
734 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 735 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 736 | (register Lisp_Object name) |
d0d6b7c5 | 737 | { |
bcd69aea | 738 | if (PROCESSP (name)) |
d0d6b7c5 | 739 | return name; |
b7826503 | 740 | CHECK_STRING (name); |
d0d6b7c5 JB |
741 | return Fcdr (Fassoc (name, Vprocess_alist)); |
742 | } | |
743 | ||
ebb9e16f JB |
744 | /* This is how commands for the user decode process arguments. It |
745 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
746 | Buffers denote the first process in the buffer, and nil denotes the | |
747 | current buffer. */ | |
d0d6b7c5 | 748 | |
77b221b1 | 749 | static Lisp_Object |
d3da34e0 | 750 | get_process (register Lisp_Object name) |
d0d6b7c5 | 751 | { |
1619761d KH |
752 | register Lisp_Object proc, obj; |
753 | if (STRINGP (name)) | |
754 | { | |
755 | obj = Fget_process (name); | |
756 | if (NILP (obj)) | |
757 | obj = Fget_buffer (name); | |
758 | if (NILP (obj)) | |
d5db4077 | 759 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
760 | } |
761 | else if (NILP (name)) | |
762 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 763 | else |
1619761d KH |
764 | obj = name; |
765 | ||
766 | /* Now obj should be either a buffer object or a process object. | |
767 | */ | |
768 | if (BUFFERP (obj)) | |
d0d6b7c5 | 769 | { |
1619761d | 770 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 771 | if (NILP (proc)) |
4b4deea2 | 772 | error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj), name))); |
d0d6b7c5 | 773 | } |
d0d6b7c5 | 774 | else |
1619761d | 775 | { |
b7826503 | 776 | CHECK_PROCESS (obj); |
1619761d KH |
777 | proc = obj; |
778 | } | |
779 | return proc; | |
d0d6b7c5 JB |
780 | } |
781 | ||
a5cfdda8 | 782 | |
a5cfdda8 KS |
783 | /* Fdelete_process promises to immediately forget about the process, but in |
784 | reality, Emacs needs to remember those processes until they have been | |
0b3d4a47 | 785 | treated by the SIGCHLD handler and waitpid has been invoked on them; |
bb5f74ee PE |
786 | otherwise they might fill up the kernel's process table. |
787 | ||
788 | Some processes created by call-process are also put onto this list. */ | |
a5cfdda8 | 789 | static Lisp_Object deleted_pid_list; |
a5cfdda8 | 790 | |
bb5f74ee PE |
791 | void |
792 | record_deleted_pid (pid_t pid) | |
793 | { | |
bb5f74ee PE |
794 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
795 | /* GC treated elements set to nil. */ | |
796 | Fdelq (Qnil, deleted_pid_list)); | |
797 | ||
bb5f74ee PE |
798 | } |
799 | ||
d0d6b7c5 | 800 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
801 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
802 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
803 | nil, indicating the current buffer's process. */) | |
5842a27b | 804 | (register Lisp_Object process) |
d0d6b7c5 | 805 | { |
ff6daed3 KS |
806 | register struct Lisp_Process *p; |
807 | ||
4ee3e309 | 808 | process = get_process (process); |
ff6daed3 KS |
809 | p = XPROCESS (process); |
810 | ||
6bfd98e7 | 811 | p->raw_status_new = 0; |
d888760c | 812 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 813 | { |
6a09a33b | 814 | pset_status (p, Fcons (Qexit, Fcons (make_number (0), Qnil))); |
60f0fb11 | 815 | p->tick = ++process_tick; |
ff6daed3 | 816 | status_notify (p); |
e42bdf01 | 817 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 818 | } |
35fb8050 | 819 | else |
d0d6b7c5 | 820 | { |
35fb8050 PE |
821 | if (p->alive) |
822 | record_kill_process (p); | |
823 | ||
824 | if (p->infd >= 0) | |
a5cfdda8 | 825 | { |
35fb8050 PE |
826 | /* Update P's status, since record_kill_process will make the |
827 | SIGCHLD handler update deleted_pid_list, not *P. */ | |
828 | Lisp_Object symbol; | |
829 | if (p->raw_status_new) | |
830 | update_status (p); | |
831 | symbol = CONSP (p->status) ? XCAR (p->status) : p->status; | |
832 | if (! (EQ (symbol, Qsignal) || EQ (symbol, Qexit))) | |
833 | pset_status (p, list2 (Qsignal, make_number (SIGKILL))); | |
834 | ||
60f0fb11 | 835 | p->tick = ++process_tick; |
a5cfdda8 | 836 | status_notify (p); |
e42bdf01 | 837 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 838 | } |
d0d6b7c5 | 839 | } |
4ee3e309 | 840 | remove_process (process); |
d0d6b7c5 JB |
841 | return Qnil; |
842 | } | |
843 | \f | |
844 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
845 | doc: /* Return the status of PROCESS. |
846 | The returned value is one of the following symbols: | |
847 | run -- for a process that is running. | |
848 | stop -- for a process stopped but continuable. | |
849 | exit -- for a process that has exited. | |
850 | signal -- for a process that has got a fatal signal. | |
851 | open -- for a network stream connection that is open. | |
e690ca94 | 852 | listen -- for a network stream server that is listening. |
fdb82f93 | 853 | closed -- for a network stream connection that is closed. |
e4984112 KS |
854 | connect -- when waiting for a non-blocking connection to complete. |
855 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
856 | nil -- if arg is a process name and no such process exists. |
857 | PROCESS may be a process, a buffer, the name of a process, or | |
858 | nil, indicating the current buffer's process. */) | |
5842a27b | 859 | (register Lisp_Object process) |
d0d6b7c5 JB |
860 | { |
861 | register struct Lisp_Process *p; | |
862 | register Lisp_Object status; | |
343f4114 | 863 | |
4ee3e309 EN |
864 | if (STRINGP (process)) |
865 | process = Fget_process (process); | |
343f4114 | 866 | else |
4ee3e309 | 867 | process = get_process (process); |
343f4114 | 868 | |
4ee3e309 EN |
869 | if (NILP (process)) |
870 | return process; | |
343f4114 | 871 | |
4ee3e309 | 872 | p = XPROCESS (process); |
6bfd98e7 | 873 | if (p->raw_status_new) |
d0d6b7c5 | 874 | update_status (p); |
4d2b044c | 875 | status = p->status; |
bcd69aea | 876 | if (CONSP (status)) |
70949dac | 877 | status = XCAR (status); |
d888760c | 878 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 879 | { |
e690ca94 | 880 | if (EQ (status, Qexit)) |
d0d6b7c5 | 881 | status = Qclosed; |
4d2b044c | 882 | else if (EQ (p->command, Qt)) |
e690ca94 KS |
883 | status = Qstop; |
884 | else if (EQ (status, Qrun)) | |
885 | status = Qopen; | |
d0d6b7c5 JB |
886 | } |
887 | return status; | |
888 | } | |
889 | ||
890 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
891 | 1, 1, 0, | |
fdb82f93 PJ |
892 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
893 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 894 | (register Lisp_Object process) |
d0d6b7c5 | 895 | { |
b7826503 | 896 | CHECK_PROCESS (process); |
6bfd98e7 | 897 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 | 898 | update_status (XPROCESS (process)); |
4d2b044c DA |
899 | if (CONSP (XPROCESS (process)->status)) |
900 | return XCAR (XCDR (XPROCESS (process)->status)); | |
d0d6b7c5 JB |
901 | return make_number (0); |
902 | } | |
903 | ||
904 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 905 | doc: /* Return the process id of PROCESS. |
f3d9532b | 906 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 907 | For a network connection, this value is nil. */) |
5842a27b | 908 | (register Lisp_Object process) |
d0d6b7c5 | 909 | { |
d311d28c | 910 | pid_t pid; |
d30fe779 | 911 | |
b7826503 | 912 | CHECK_PROCESS (process); |
d30fe779 EZ |
913 | pid = XPROCESS (process)->pid; |
914 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
915 | } |
916 | ||
917 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
918 | doc: /* Return the name of PROCESS, as a string. |
919 | This is the name of the program invoked in PROCESS, | |
920 | possibly modified to make it unique among process names. */) | |
5842a27b | 921 | (register Lisp_Object process) |
d0d6b7c5 | 922 | { |
b7826503 | 923 | CHECK_PROCESS (process); |
4d2b044c | 924 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
925 | } |
926 | ||
927 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
928 | doc: /* Return the command that was executed to start PROCESS. |
929 | This is a list of strings, the first string being the program executed | |
930 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
931 | For a network or serial process, this is nil (process is running) or t |
932 | \(process is stopped). */) | |
5842a27b | 933 | (register Lisp_Object process) |
d0d6b7c5 | 934 | { |
b7826503 | 935 | CHECK_PROCESS (process); |
4d2b044c | 936 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
937 | } |
938 | ||
3b9a3dfa | 939 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
940 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
941 | This is the terminal that the process itself reads and writes on, | |
942 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 943 | (register Lisp_Object process) |
3b9a3dfa | 944 | { |
b7826503 | 945 | CHECK_PROCESS (process); |
4d2b044c | 946 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
947 | } |
948 | ||
d0d6b7c5 | 949 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 | 950 | 2, 2, 0, |
76147d94 DD |
951 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). |
952 | Return BUFFER. */) | |
5842a27b | 953 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 954 | { |
e690ca94 KS |
955 | struct Lisp_Process *p; |
956 | ||
b7826503 | 957 | CHECK_PROCESS (process); |
d0d6b7c5 | 958 | if (!NILP (buffer)) |
b7826503 | 959 | CHECK_BUFFER (buffer); |
e690ca94 | 960 | p = XPROCESS (process); |
6a09a33b | 961 | pset_buffer (p, buffer); |
d888760c | 962 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 963 | pset_childp (p, Fplist_put (p->childp, QCbuffer, buffer)); |
03f04413 | 964 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
965 | return buffer; |
966 | } | |
967 | ||
968 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
969 | 1, 1, 0, |
970 | doc: /* Return the buffer PROCESS is associated with. | |
971 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 972 | (register Lisp_Object process) |
d0d6b7c5 | 973 | { |
b7826503 | 974 | CHECK_PROCESS (process); |
4d2b044c | 975 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
976 | } |
977 | ||
978 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
979 | 1, 1, 0, |
980 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 981 | (register Lisp_Object process) |
d0d6b7c5 | 982 | { |
b7826503 | 983 | CHECK_PROCESS (process); |
4d2b044c | 984 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
985 | } |
986 | ||
987 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 | 988 | 2, 2, 0, |
1aa8d505 | 989 | doc: /* Give PROCESS the filter function FILTER; nil means default. |
7b82c3b6 | 990 | A value of t means stop accepting output from the process. |
3452df9e | 991 | |
1aa8d505 | 992 | When a process has a non-default filter, its buffer is not used for output. |
3452df9e | 993 | Instead, each time it does output, the entire string of output is |
177c0ea7 | 994 | passed to the filter. |
3452df9e | 995 | |
fdb82f93 | 996 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
997 | The string argument is normally a multibyte string, except: |
998 | - if the process' input coding system is no-conversion or raw-text, | |
999 | it is a unibyte string (the non-converted input), or else | |
1000 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
1001 | string (the result of converting the decoded input multibyte | |
1002 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 1003 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 1004 | { |
471f86b9 | 1005 | struct Lisp_Process *p; |
177c0ea7 | 1006 | |
b7826503 | 1007 | CHECK_PROCESS (process); |
471f86b9 GM |
1008 | p = XPROCESS (process); |
1009 | ||
1010 | /* Don't signal an error if the process' input file descriptor | |
1011 | is closed. This could make debugging Lisp more difficult, | |
1012 | for example when doing something like | |
1013 | ||
1014 | (setq process (start-process ...)) | |
1015 | (debug) | |
1016 | (set-process-filter process ...) */ | |
177c0ea7 | 1017 | |
1aa8d505 SM |
1018 | if (NILP (filter)) |
1019 | filter = Qinternal_default_process_filter; | |
1020 | ||
60f0fb11 | 1021 | if (p->infd >= 0) |
a69281ff | 1022 | { |
4d2b044c | 1023 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 1024 | { |
60f0fb11 SM |
1025 | FD_CLR (p->infd, &input_wait_mask); |
1026 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1027 | } |
4d2b044c | 1028 | else if (EQ (p->filter, Qt) |
d888760c | 1029 | /* Network or serial process not stopped: */ |
4d2b044c | 1030 | && !EQ (p->command, Qt)) |
471f86b9 | 1031 | { |
60f0fb11 SM |
1032 | FD_SET (p->infd, &input_wait_mask); |
1033 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1034 | } |
a69281ff | 1035 | } |
177c0ea7 | 1036 | |
6a09a33b | 1037 | pset_filter (p, filter); |
d888760c | 1038 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1039 | pset_childp (p, Fplist_put (p->childp, QCfilter, filter)); |
03f04413 | 1040 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1041 | return filter; |
1042 | } | |
1043 | ||
1044 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 | 1045 | 1, 1, 0, |
1aa8d505 | 1046 | doc: /* Return the filter function of PROCESS. |
fdb82f93 | 1047 | See `set-process-filter' for more info on filter functions. */) |
5842a27b | 1048 | (register Lisp_Object process) |
d0d6b7c5 | 1049 | { |
b7826503 | 1050 | CHECK_PROCESS (process); |
4d2b044c | 1051 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1052 | } |
1053 | ||
1054 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 | 1055 | 2, 2, 0, |
1aa8d505 | 1056 | doc: /* Give PROCESS the sentinel SENTINEL; nil for default. |
fdb82f93 PJ |
1057 | The sentinel is called as a function when the process changes state. |
1058 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 1059 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1060 | { |
6b61353c KH |
1061 | struct Lisp_Process *p; |
1062 | ||
b7826503 | 1063 | CHECK_PROCESS (process); |
6b61353c KH |
1064 | p = XPROCESS (process); |
1065 | ||
1aa8d505 SM |
1066 | if (NILP (sentinel)) |
1067 | sentinel = Qinternal_default_process_sentinel; | |
1068 | ||
6a09a33b | 1069 | pset_sentinel (p, sentinel); |
d888760c | 1070 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1071 | pset_childp (p, Fplist_put (p->childp, QCsentinel, sentinel)); |
d0d6b7c5 JB |
1072 | return sentinel; |
1073 | } | |
1074 | ||
1075 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 | 1076 | 1, 1, 0, |
1aa8d505 | 1077 | doc: /* Return the sentinel of PROCESS. |
fdb82f93 | 1078 | See `set-process-sentinel' for more info on sentinels. */) |
5842a27b | 1079 | (register Lisp_Object process) |
d0d6b7c5 | 1080 | { |
b7826503 | 1081 | CHECK_PROCESS (process); |
4d2b044c | 1082 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1083 | } |
1084 | ||
396df322 | 1085 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1086 | Sset_process_window_size, 3, 3, 0, |
1087 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1088 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1089 | { |
b7826503 | 1090 | CHECK_PROCESS (process); |
af5a5a98 AS |
1091 | CHECK_RANGED_INTEGER (height, 0, INT_MAX); |
1092 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); | |
177c0ea7 | 1093 | |
60f0fb11 SM |
1094 | if (XPROCESS (process)->infd < 0 |
1095 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1096 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1097 | return Qnil; |
1098 | else | |
1099 | return Qt; | |
1100 | } | |
1101 | ||
52a1b894 | 1102 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1103 | Fset_process_inherit_coding_system_flag, |
1104 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1105 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1106 | If the second argument FLAG is non-nil, then the variable | |
1107 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1108 | will be bound to the value of the coding system used to decode | |
1109 | the process output. | |
1110 | ||
1111 | This is useful when the coding system specified for the process buffer | |
1112 | leaves either the character code conversion or the end-of-line conversion | |
1113 | unspecified, or if the coding system used to decode the process output | |
1114 | is more appropriate for saving the process buffer. | |
1115 | ||
1116 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1117 | starting the process is an alternative way of setting the inherit flag | |
016a35df GM |
1118 | for the process which will run. |
1119 | ||
1120 | This function returns FLAG. */) | |
5842a27b | 1121 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1122 | { |
b7826503 | 1123 | CHECK_PROCESS (process); |
60f0fb11 | 1124 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1125 | return flag; |
1126 | } | |
1127 | ||
e690ca94 KS |
1128 | DEFUN ("set-process-query-on-exit-flag", |
1129 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1130 | 2, 2, 0, | |
1131 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1132 | If the second argument FLAG is non-nil, Emacs will query the user before |
016a35df GM |
1133 | exiting or killing a buffer if PROCESS is running. This function |
1134 | returns FLAG. */) | |
5842a27b | 1135 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1136 | { |
b7826503 | 1137 | CHECK_PROCESS (process); |
60f0fb11 | 1138 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1139 | return flag; |
d0d6b7c5 | 1140 | } |
312c9964 | 1141 | |
e690ca94 KS |
1142 | DEFUN ("process-query-on-exit-flag", |
1143 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1144 | 1, 1, 0, |
f3d9532b | 1145 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1146 | (register Lisp_Object process) |
de282a05 | 1147 | { |
b7826503 | 1148 | CHECK_PROCESS (process); |
60f0fb11 | 1149 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1150 | } |
1151 | ||
e690ca94 KS |
1152 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, |
1153 | 1, 2, 0, | |
1154 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1155 | For a network or serial connection, the value depends on the optional |
1156 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1157 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1158 | connection. If KEY is t, the complete contact information for the | |
1159 | connection is returned, else the specific value for the keyword KEY is | |
1160 | returned. See `make-network-process' or `make-serial-process' for a | |
1161 | list of keywords. */) | |
5842a27b | 1162 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1163 | { |
1164 | Lisp_Object contact; | |
1165 | ||
1166 | CHECK_PROCESS (process); | |
4d2b044c | 1167 | contact = XPROCESS (process)->childp; |
e690ca94 KS |
1168 | |
1169 | #ifdef DATAGRAM_SOCKETS | |
1170 | if (DATAGRAM_CONN_P (process) | |
1171 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1172 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1173 | Fprocess_datagram_address (process)); |
1174 | #endif | |
1175 | ||
d888760c | 1176 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1177 | return contact; |
d888760c | 1178 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1179 | return Fcons (Fplist_get (contact, QChost), |
1180 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1181 | if (NILP (key) && SERIALCONN_P (process)) |
1182 | return Fcons (Fplist_get (contact, QCport), | |
1183 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1184 | return Fplist_get (contact, key); |
de282a05 RS |
1185 | } |
1186 | ||
faa7db08 KS |
1187 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1188 | 1, 1, 0, | |
1189 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1190 | (register Lisp_Object process) |
365aee82 | 1191 | { |
ac4a7584 | 1192 | CHECK_PROCESS (process); |
4d2b044c | 1193 | return XPROCESS (process)->plist; |
ac4a7584 | 1194 | } |
365aee82 | 1195 | |
faa7db08 KS |
1196 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1197 | 2, 2, 0, | |
26a086c6 | 1198 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1199 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1200 | { |
365aee82 | 1201 | CHECK_PROCESS (process); |
faa7db08 | 1202 | CHECK_LIST (plist); |
365aee82 | 1203 | |
6a09a33b | 1204 | pset_plist (XPROCESS (process), plist); |
26a086c6 | 1205 | return plist; |
365aee82 KS |
1206 | } |
1207 | ||
312c9964 RS |
1208 | #if 0 /* Turned off because we don't currently record this info |
1209 | in the process. Perhaps add it. */ | |
1210 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1211 | doc: /* Return the connection type of PROCESS. |
1212 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1213 | a socket connection. */) | |
5842a27b | 1214 | (Lisp_Object process) |
312c9964 | 1215 | { |
4d2b044c | 1216 | return XPROCESS (process)->type; |
312c9964 RS |
1217 | } |
1218 | #endif | |
2a7bb882 | 1219 | |
d888760c GM |
1220 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1221 | doc: /* Return the connection type of PROCESS. | |
1222 | The value is either the symbol `real', `network', or `serial'. | |
1223 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1224 | nil, indicating the current buffer's process. */) | |
5842a27b | 1225 | (Lisp_Object process) |
d888760c GM |
1226 | { |
1227 | Lisp_Object proc; | |
1228 | proc = get_process (process); | |
4d2b044c | 1229 | return XPROCESS (proc)->type; |
d888760c | 1230 | } |
991234f0 | 1231 | |
991234f0 | 1232 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1233 | 1, 2, 0, |
991234f0 | 1234 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1235 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1236 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1237 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1238 | number in the string, even when present in ADDRESS. |
1239 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1240 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1241 | { |
991234f0 KS |
1242 | if (NILP (address)) |
1243 | return Qnil; | |
1244 | ||
1245 | if (STRINGP (address)) /* AF_LOCAL */ | |
1246 | return address; | |
1247 | ||
e1652a86 | 1248 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1249 | { |
1250 | register struct Lisp_Vector *p = XVECTOR (address); | |
d311d28c | 1251 | ptrdiff_t size = p->header.size; |
ded83665 | 1252 | Lisp_Object args[10]; |
0dccee41 | 1253 | int nargs, i; |
991234f0 | 1254 | |
eab3844f | 1255 | if (size == 4 || (size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1256 | { |
1257 | args[0] = build_string ("%d.%d.%d.%d"); | |
1258 | nargs = 4; | |
1259 | } | |
eab3844f | 1260 | else if (size == 5) |
0dccee41 KS |
1261 | { |
1262 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1263 | nargs = 5; | |
1264 | } | |
eab3844f | 1265 | else if (size == 8 || (size == 9 && !NILP (omit_port))) |
e1652a86 KS |
1266 | { |
1267 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1268 | nargs = 8; | |
1269 | } | |
eab3844f | 1270 | else if (size == 9) |
e1652a86 KS |
1271 | { |
1272 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1273 | nargs = 9; | |
1274 | } | |
0dccee41 | 1275 | else |
991234f0 KS |
1276 | return Qnil; |
1277 | ||
0dccee41 | 1278 | for (i = 0; i < nargs; i++) |
cbf23adb | 1279 | { |
d311d28c | 1280 | if (! RANGED_INTEGERP (0, p->contents[i], 65535)) |
cbf23adb JB |
1281 | return Qnil; |
1282 | ||
1283 | if (nargs <= 5 /* IPv4 */ | |
1284 | && i < 4 /* host, not port */ | |
d311d28c | 1285 | && XINT (p->contents[i]) > 255) |
cbf23adb JB |
1286 | return Qnil; |
1287 | ||
1288 | args[i+1] = p->contents[i]; | |
1289 | } | |
1290 | ||
0dccee41 | 1291 | return Fformat (nargs+1, args); |
991234f0 KS |
1292 | } |
1293 | ||
1294 | if (CONSP (address)) | |
1295 | { | |
1296 | Lisp_Object args[2]; | |
1297 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1298 | args[1] = Fcar (address); |
991234f0 | 1299 | return Fformat (2, args); |
991234f0 KS |
1300 | } |
1301 | ||
1302 | return Qnil; | |
1303 | } | |
d0d6b7c5 JB |
1304 | |
1305 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1306 | doc: /* Return a list of all processes. */) |
5842a27b | 1307 | (void) |
d0d6b7c5 JB |
1308 | { |
1309 | return Fmapcar (Qcdr, Vprocess_alist); | |
1310 | } | |
1311 | \f | |
b0310da4 JB |
1312 | /* Starting asynchronous inferior processes. */ |
1313 | ||
d3da34e0 | 1314 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1315 | |
d0d6b7c5 | 1316 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1317 | doc: /* Start a program in a subprocess. Return the process object for it. |
1318 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1319 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1320 | |
1321 | Process output (both standard output and standard error streams) goes | |
1322 | at end of BUFFER, unless you specify an output stream or filter | |
1323 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1324 | this process is not associated with any buffer. |
1325 | ||
6b8bc570 CY |
1326 | PROGRAM is the program file name. It is searched for in `exec-path' |
1327 | (which see). If nil, just associate a pty with the buffer. Remaining | |
1328 | arguments are strings to give program as arguments. | |
320aebc9 | 1329 | |
4b6c5eee EZ |
1330 | If you want to separate standard output from standard error, invoke |
1331 | the command through a shell and redirect one of them using the shell | |
1332 | syntax. | |
320aebc9 | 1333 | |
3ecdf100 | 1334 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
f66c7cf8 | 1335 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 | 1336 | { |
1e30af70 | 1337 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1338 | register unsigned char **new_argv; |
f66c7cf8 | 1339 | ptrdiff_t i; |
d311d28c | 1340 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1341 | |
1342 | buffer = args[1]; | |
1343 | if (!NILP (buffer)) | |
1344 | buffer = Fget_buffer_create (buffer); | |
1345 | ||
1e30af70 JB |
1346 | /* Make sure that the child will be able to chdir to the current |
1347 | buffer's current directory, or its unhandled equivalent. We | |
1348 | can't just have the child check for an error when it does the | |
1349 | chdir, since it's in a vfork. | |
1350 | ||
1351 | We have to GCPRO around this because Fexpand_file_name and | |
1352 | Funhandled_file_name_directory might call a file name handling | |
1353 | function. The argument list is protected by the caller, so all | |
1354 | we really have to worry about is buffer. */ | |
1355 | { | |
1356 | struct gcpro gcpro1, gcpro2; | |
1357 | ||
4b4deea2 | 1358 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1359 | |
1360 | GCPRO2 (buffer, current_dir); | |
1361 | ||
ca319910 SM |
1362 | current_dir = Funhandled_file_name_directory (current_dir); |
1363 | if (NILP (current_dir)) | |
1364 | /* If the file name handler says that current_dir is unreachable, use | |
1365 | a sensible default. */ | |
1366 | current_dir = build_string ("~/"); | |
1367 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1368 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1369 | report_file_error ("Setting current directory", | |
4b4deea2 | 1370 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1371 | |
1372 | UNGCPRO; | |
1373 | } | |
1374 | ||
d0d6b7c5 | 1375 | name = args[0]; |
b7826503 | 1376 | CHECK_STRING (name); |
d0d6b7c5 JB |
1377 | |
1378 | program = args[2]; | |
1379 | ||
850d0752 NR |
1380 | if (!NILP (program)) |
1381 | CHECK_STRING (program); | |
d0d6b7c5 | 1382 | |
d0d6b7c5 | 1383 | proc = make_process (name); |
b0310da4 JB |
1384 | /* If an error occurs and we can't start the process, we want to |
1385 | remove it from the process list. This means that each error | |
1386 | check in create_process doesn't need to call remove_process | |
1387 | itself; it's all taken care of here. */ | |
1388 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 | 1389 | |
6a09a33b PE |
1390 | pset_childp (XPROCESS (proc), Qt); |
1391 | pset_plist (XPROCESS (proc), Qnil); | |
1392 | pset_type (XPROCESS (proc), Qreal); | |
1393 | pset_buffer (XPROCESS (proc), buffer); | |
1aa8d505 SM |
1394 | pset_sentinel (XPROCESS (proc), Qinternal_default_process_sentinel); |
1395 | pset_filter (XPROCESS (proc), Qinternal_default_process_filter); | |
6a09a33b | 1396 | pset_command (XPROCESS (proc), Flist (nargs - 2, args + 2)); |
d0d6b7c5 | 1397 | |
8af55556 TZ |
1398 | #ifdef HAVE_GNUTLS |
1399 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1400 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
6a09a33b | 1401 | pset_gnutls_cred_type (XPROCESS (proc), Qnil); |
8af55556 TZ |
1402 | #endif |
1403 | ||
6b61353c | 1404 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1405 | XPROCESS (proc)->adaptive_read_buffering |
1406 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1407 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1408 | #endif |
1409 | ||
7af71e17 | 1410 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1411 | if (BUFFERP (buffer)) |
4d2b044c | 1412 | set_marker_both (XPROCESS (proc)->mark, buffer, |
d8a2934e RS |
1413 | BUF_ZV (XBUFFER (buffer)), |
1414 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1415 | |
67918941 | 1416 | { |
d5d4ae71 KH |
1417 | /* Decide coding systems for communicating with the process. Here |
1418 | we don't setup the structure coding_system nor pay attention to | |
1419 | unibyte mode. They are done in create_process. */ | |
1420 | ||
67918941 RS |
1421 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1422 | Lisp_Object coding_systems = Qt; | |
1423 | Lisp_Object val, *args2; | |
a4a37e65 | 1424 | struct gcpro gcpro1, gcpro2; |
67918941 | 1425 | |
d5d4ae71 KH |
1426 | val = Vcoding_system_for_read; |
1427 | if (NILP (val)) | |
67918941 | 1428 | { |
38182d90 | 1429 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1430 | args2[0] = Qstart_process; |
1431 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1432 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1433 | if (!NILP (program)) |
1434 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1435 | UNGCPRO; |
1436 | if (CONSP (coding_systems)) | |
70949dac | 1437 | val = XCAR (coding_systems); |
67918941 | 1438 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1439 | val = XCAR (Vdefault_process_coding_system); |
67918941 | 1440 | } |
6a09a33b | 1441 | pset_decode_coding_system (XPROCESS (proc), val); |
67918941 | 1442 | |
d5d4ae71 KH |
1443 | val = Vcoding_system_for_write; |
1444 | if (NILP (val)) | |
67918941 RS |
1445 | { |
1446 | if (EQ (coding_systems, Qt)) | |
1447 | { | |
38182d90 | 1448 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1449 | args2[0] = Qstart_process; |
1450 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1451 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1452 | if (!NILP (program)) |
1453 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1454 | UNGCPRO; |
1455 | } | |
1456 | if (CONSP (coding_systems)) | |
70949dac | 1457 | val = XCDR (coding_systems); |
67918941 | 1458 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1459 | val = XCDR (Vdefault_process_coding_system); |
67918941 | 1460 | } |
6a09a33b | 1461 | pset_encode_coding_system (XPROCESS (proc), val); |
e1dbe924 | 1462 | /* Note: At this moment, the above coding system may leave |
fcaf8878 KH |
1463 | text-conversion or eol-conversion unspecified. They will be |
1464 | decided after we read output from the process and decode it by | |
1465 | some coding system, or just before we actually send a text to | |
1466 | the process. */ | |
67918941 | 1467 | } |
0fa1789e | 1468 | |
a4a37e65 | 1469 | |
6a09a33b | 1470 | pset_decoding_buf (XPROCESS (proc), empty_unibyte_string); |
850d0752 | 1471 | XPROCESS (proc)->decoding_carryover = 0; |
6a09a33b | 1472 | pset_encoding_buf (XPROCESS (proc), empty_unibyte_string); |
ed30cf85 | 1473 | |
850d0752 NR |
1474 | XPROCESS (proc)->inherit_coding_system_flag |
1475 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1476 | |
850d0752 NR |
1477 | if (!NILP (program)) |
1478 | { | |
1479 | /* If program file name is not absolute, search our path for it. | |
1480 | Put the name we will really use in TEM. */ | |
1481 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1482 | && !(SCHARS (program) > 1 | |
1483 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1484 | { | |
1485 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1486 | ||
1487 | tem = Qnil; | |
1488 | GCPRO4 (name, program, buffer, current_dir); | |
1489 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1490 | UNGCPRO; | |
1491 | if (NILP (tem)) | |
1492 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1493 | tem = Fexpand_file_name (tem, Qnil); | |
1494 | } | |
1495 | else | |
1496 | { | |
1497 | if (!NILP (Ffile_directory_p (program))) | |
1498 | error ("Specified program for new process is a directory"); | |
1499 | tem = program; | |
1500 | } | |
ed30cf85 | 1501 | |
850d0752 NR |
1502 | /* If program file name starts with /: for quoting a magic name, |
1503 | discard that. */ | |
1504 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1505 | && SREF (tem, 1) == ':') | |
1506 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1507 | |
77bf07e1 | 1508 | { |
fcaf8878 | 1509 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1510 | struct gcpro gcpro1; |
1511 | GCPRO1 (tem); | |
a4a37e65 | 1512 | |
850d0752 NR |
1513 | /* Encode the file name and put it in NEW_ARGV. |
1514 | That's where the child will use it to execute the program. */ | |
1515 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1516 | |
850d0752 NR |
1517 | /* Here we encode arguments by the coding system used for sending |
1518 | data to the process. We don't support using different coding | |
1519 | systems for encoding arguments and for encoding data sent to the | |
1520 | process. */ | |
77bf07e1 | 1521 | |
850d0752 NR |
1522 | for (i = 3; i < nargs; i++) |
1523 | { | |
1524 | tem = Fcons (args[i], tem); | |
1525 | CHECK_STRING (XCAR (tem)); | |
1526 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1527 | { |
1528 | if (NILP (arg_encoding)) | |
1529 | arg_encoding = (complement_process_encoding_system | |
4d2b044c | 1530 | (XPROCESS (proc)->encode_coding_system)); |
fcaf8878 KH |
1531 | XSETCAR (tem, |
1532 | code_convert_string_norecord | |
1533 | (XCAR (tem), arg_encoding, 1)); | |
1534 | } | |
850d0752 | 1535 | } |
a4a37e65 | 1536 | |
850d0752 NR |
1537 | UNGCPRO; |
1538 | } | |
0fa1789e | 1539 | |
850d0752 NR |
1540 | /* Now that everything is encoded we can collect the strings into |
1541 | NEW_ARGV. */ | |
38182d90 | 1542 | new_argv = alloca ((nargs - 1) * sizeof *new_argv); |
850d0752 | 1543 | new_argv[nargs - 2] = 0; |
52a1b894 | 1544 | |
c5101a77 | 1545 | for (i = nargs - 2; i-- != 0; ) |
850d0752 NR |
1546 | { |
1547 | new_argv[i] = SDATA (XCAR (tem)); | |
1548 | tem = XCDR (tem); | |
1549 | } | |
1550 | ||
1551 | create_process (proc, (char **) new_argv, current_dir); | |
1552 | } | |
1553 | else | |
1554 | create_pty (proc); | |
d0d6b7c5 | 1555 | |
b0310da4 | 1556 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1557 | } |
1558 | ||
b0310da4 | 1559 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1560 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1561 | an error and the process wasn't started successfully, so we should |
1562 | remove it from the process list. */ | |
1563 | static Lisp_Object | |
d3da34e0 | 1564 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1565 | { |
bcd69aea | 1566 | if (!PROCESSP (proc)) |
1088b922 | 1567 | emacs_abort (); |
b0310da4 | 1568 | |
2bf26180 GM |
1569 | /* Was PROC started successfully? |
1570 | -2 is used for a pty with no process, eg for gdb. */ | |
1571 | if (XPROCESS (proc)->pid <= 0 && XPROCESS (proc)->pid != -2) | |
b0310da4 JB |
1572 | remove_process (proc); |
1573 | ||
1574 | return Qnil; | |
1575 | } | |
1576 | ||
ff6daed3 | 1577 | static void |
d3da34e0 | 1578 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1579 | { |
30904ab7 | 1580 | /* Nothing to do. */ |
d0d6b7c5 JB |
1581 | } |
1582 | ||
30904ab7 | 1583 | |
40ccffa6 | 1584 | static void |
cbd6509c | 1585 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1586 | { |
29ed4d51 CY |
1587 | int inchannel, outchannel; |
1588 | pid_t pid; | |
d0d6b7c5 | 1589 | int sv[2]; |
49cdacda | 1590 | #ifndef WINDOWSNT |
2c4df143 YM |
1591 | int wait_child_setup[2]; |
1592 | #endif | |
cbd6509c PE |
1593 | int forkin, forkout; |
1594 | bool pty_flag = 0; | |
1595 | Lisp_Object lisp_pty_name = Qnil; | |
1596 | Lisp_Object encoded_current_dir; | |
d0d6b7c5 | 1597 | |
d0d6b7c5 JB |
1598 | inchannel = outchannel = -1; |
1599 | ||
1600 | #ifdef HAVE_PTYS | |
fe45da4e | 1601 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1602 | outchannel = inchannel = allocate_pty (); |
1603 | ||
d0d6b7c5 JB |
1604 | if (inchannel >= 0) |
1605 | { | |
2af70a0c RS |
1606 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1607 | /* On most USG systems it does not work to open the pty's tty here, | |
1608 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1609 | /* Don't let this terminal become our controlling terminal |
1610 | (in case we don't have one). */ | |
68c45bf0 | 1611 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 JB |
1612 | if (forkin < 0) |
1613 | report_file_error ("Opening pty", Qnil); | |
1614 | #else | |
1615 | forkin = forkout = -1; | |
2af70a0c | 1616 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 | 1617 | pty_flag = 1; |
4d7e6e51 | 1618 | lisp_pty_name = build_string (pty_name); |
d0d6b7c5 JB |
1619 | } |
1620 | else | |
1621 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1622 | { |
fc14013c KH |
1623 | int tem; |
1624 | tem = pipe (sv); | |
1625 | if (tem < 0) | |
1626 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1627 | inchannel = sv[0]; |
1628 | forkout = sv[1]; | |
fc14013c KH |
1629 | tem = pipe (sv); |
1630 | if (tem < 0) | |
1631 | { | |
68c45bf0 PE |
1632 | emacs_close (inchannel); |
1633 | emacs_close (forkout); | |
fc14013c KH |
1634 | report_file_error ("Creating pipe", Qnil); |
1635 | } | |
d0d6b7c5 JB |
1636 | outchannel = sv[1]; |
1637 | forkin = sv[0]; | |
1638 | } | |
d0d6b7c5 | 1639 | |
49cdacda | 1640 | #ifndef WINDOWSNT |
2c4df143 YM |
1641 | { |
1642 | int tem; | |
1643 | ||
1644 | tem = pipe (wait_child_setup); | |
1645 | if (tem < 0) | |
1646 | report_file_error ("Creating pipe", Qnil); | |
1647 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1648 | if (tem >= 0) | |
1649 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1650 | if (tem < 0) | |
1651 | { | |
1652 | emacs_close (wait_child_setup[0]); | |
1653 | emacs_close (wait_child_setup[1]); | |
1654 | report_file_error ("Setting file descriptor flags", Qnil); | |
1655 | } | |
1656 | } | |
1657 | #endif | |
1658 | ||
d0d6b7c5 | 1659 | fcntl (inchannel, F_SETFL, O_NONBLOCK); |
03832893 | 1660 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1661 | |
1662 | /* Record this as an active process, with its channels. | |
1663 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1664 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1665 | XPROCESS (process)->infd = inchannel; |
1666 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1667 | |
1668 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1669 | It was only used for getting the foreground tty process, so now | |
1670 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1671 | more portable (see USG_SUBTTY_WORKS above). */ | |
1672 | ||
60f0fb11 | 1673 | XPROCESS (process)->pty_flag = pty_flag; |
6a09a33b | 1674 | pset_status (XPROCESS (process), Qrun); |
d0d6b7c5 | 1675 | |
3081bf8d | 1676 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1677 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1678 | if (inchannel > max_process_desc) |
1679 | max_process_desc = inchannel; | |
1680 | ||
0b3d4a47 | 1681 | /* This may signal an error. */ |
5cf2b69b KH |
1682 | setup_process_coding_systems (process); |
1683 | ||
4d7e6e51 | 1684 | encoded_current_dir = ENCODE_FILE (current_dir); |
177c0ea7 | 1685 | |
4d7e6e51 | 1686 | block_input (); |
fa55d2aa | 1687 | block_child_signal (); |
4d7e6e51 | 1688 | |
e98d950b | 1689 | #ifndef WINDOWSNT |
cbd6509c PE |
1690 | /* vfork, and prevent local vars from being clobbered by the vfork. */ |
1691 | { | |
1692 | Lisp_Object volatile encoded_current_dir_volatile = encoded_current_dir; | |
1693 | Lisp_Object volatile lisp_pty_name_volatile = lisp_pty_name; | |
1694 | Lisp_Object volatile process_volatile = process; | |
1695 | bool volatile pty_flag_volatile = pty_flag; | |
1696 | char **volatile new_argv_volatile = new_argv; | |
1697 | int volatile forkin_volatile = forkin; | |
1698 | int volatile forkout_volatile = forkout; | |
1699 | int volatile wait_child_setup_0_volatile = wait_child_setup[0]; | |
1700 | int volatile wait_child_setup_1_volatile = wait_child_setup[1]; | |
1701 | ||
1702 | pid = vfork (); | |
1703 | ||
1704 | encoded_current_dir = encoded_current_dir_volatile; | |
1705 | lisp_pty_name = lisp_pty_name_volatile; | |
1706 | process = process_volatile; | |
1707 | pty_flag = pty_flag_volatile; | |
1708 | new_argv = new_argv_volatile; | |
1709 | forkin = forkin_volatile; | |
1710 | forkout = forkout_volatile; | |
1711 | wait_child_setup[0] = wait_child_setup_0_volatile; | |
1712 | wait_child_setup[1] = wait_child_setup_1_volatile; | |
1713 | } | |
1714 | ||
4d7e6e51 | 1715 | if (pid == 0) |
e98d950b | 1716 | #endif /* not WINDOWSNT */ |
4d7e6e51 PE |
1717 | { |
1718 | int xforkin = forkin; | |
1719 | int xforkout = forkout; | |
d0d6b7c5 | 1720 | |
4d7e6e51 | 1721 | /* Make the pty be the controlling terminal of the process. */ |
d0d6b7c5 | 1722 | #ifdef HAVE_PTYS |
4d7e6e51 | 1723 | /* First, disconnect its current controlling terminal. */ |
4d7e6e51 PE |
1724 | /* We tried doing setsid only if pty_flag, but it caused |
1725 | process_set_signal to fail on SGI when using a pipe. */ | |
1726 | setsid (); | |
1727 | /* Make the pty's terminal the controlling terminal. */ | |
1728 | if (pty_flag && xforkin >= 0) | |
1729 | { | |
39e9ebcd | 1730 | #ifdef TIOCSCTTY |
4d7e6e51 PE |
1731 | /* We ignore the return value |
1732 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1733 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1734 | #endif |
4d7e6e51 | 1735 | } |
a7ebc409 | 1736 | #if defined (LDISC1) |
4d7e6e51 PE |
1737 | if (pty_flag && xforkin >= 0) |
1738 | { | |
1739 | struct termios t; | |
1740 | tcgetattr (xforkin, &t); | |
1741 | t.c_lflag = LDISC1; | |
1742 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
1743 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); | |
1744 | } | |
9bcf8ec6 | 1745 | #else |
aafadd9f | 1746 | #if defined (NTTYDISC) && defined (TIOCSETD) |
4d7e6e51 PE |
1747 | if (pty_flag && xforkin >= 0) |
1748 | { | |
1749 | /* Use new line discipline. */ | |
1750 | int ldisc = NTTYDISC; | |
1751 | ioctl (xforkin, TIOCSETD, &ldisc); | |
1752 | } | |
000ab717 | 1753 | #endif |
9bcf8ec6 | 1754 | #endif |
177c0ea7 | 1755 | #ifdef TIOCNOTTY |
4d7e6e51 PE |
1756 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1757 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1758 | if (pty_flag) | |
1759 | { | |
1760 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? | |
1761 | I can't test it since I don't have 4.3. */ | |
1762 | int j = emacs_open ("/dev/tty", O_RDWR, 0); | |
1763 | if (j >= 0) | |
1764 | { | |
1765 | ioctl (j, TIOCNOTTY, 0); | |
1766 | emacs_close (j); | |
1767 | } | |
4d7e6e51 | 1768 | } |
d0d6b7c5 JB |
1769 | #endif /* TIOCNOTTY */ |
1770 | ||
e39a993c | 1771 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1772 | /*** There is a suggestion that this ought to be a |
dd0333b6 | 1773 | conditional on TIOCSPGRP, or !defined TIOCSCTTY. |
99153b9e RS |
1774 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; |
1775 | that system does seem to need this code, even though | |
dd0333b6 | 1776 | both TIOCSCTTY is defined. */ |
d0d6b7c5 JB |
1777 | /* Now close the pty (if we had it open) and reopen it. |
1778 | This makes the pty the controlling terminal of the subprocess. */ | |
4d7e6e51 PE |
1779 | if (pty_flag) |
1780 | { | |
99e3d726 | 1781 | |
4d7e6e51 PE |
1782 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1783 | would work? */ | |
1784 | if (xforkin >= 0) | |
1785 | emacs_close (xforkin); | |
1786 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1787 | |
4d7e6e51 PE |
1788 | if (xforkin < 0) |
1789 | { | |
1790 | emacs_write (1, "Couldn't open the pty terminal ", 31); | |
1791 | emacs_write (1, pty_name, strlen (pty_name)); | |
1792 | emacs_write (1, "\n", 1); | |
1793 | _exit (1); | |
1794 | } | |
4aa54ba8 | 1795 | |
4d7e6e51 | 1796 | } |
e39a993c | 1797 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1798 | |
d0d6b7c5 | 1799 | #ifdef SETUP_SLAVE_PTY |
4d7e6e51 PE |
1800 | if (pty_flag) |
1801 | { | |
1802 | SETUP_SLAVE_PTY; | |
1803 | } | |
d0d6b7c5 JB |
1804 | #endif /* SETUP_SLAVE_PTY */ |
1805 | #ifdef AIX | |
4d7e6e51 PE |
1806 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. |
1807 | Now reenable it in the child, so it will die when we want it to. */ | |
1808 | if (pty_flag) | |
1809 | signal (SIGHUP, SIG_DFL); | |
d0d6b7c5 JB |
1810 | #endif |
1811 | #endif /* HAVE_PTYS */ | |
1812 | ||
4d7e6e51 PE |
1813 | signal (SIGINT, SIG_DFL); |
1814 | signal (SIGQUIT, SIG_DFL); | |
1815 | ||
1816 | /* Emacs ignores SIGPIPE, but the child should not. */ | |
1817 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 | 1818 | |
fa55d2aa PE |
1819 | /* Stop blocking SIGCHLD in the child. */ |
1820 | unblock_child_signal (); | |
5e7e1da2 | 1821 | |
4d7e6e51 PE |
1822 | if (pty_flag) |
1823 | child_setup_tty (xforkout); | |
e98d950b | 1824 | #ifdef WINDOWSNT |
4d7e6e51 PE |
1825 | pid = child_setup (xforkin, xforkout, xforkout, |
1826 | new_argv, 1, encoded_current_dir); | |
177c0ea7 | 1827 | #else /* not WINDOWSNT */ |
4d7e6e51 | 1828 | emacs_close (wait_child_setup[0]); |
4d7e6e51 PE |
1829 | child_setup (xforkin, xforkout, xforkout, |
1830 | new_argv, 1, encoded_current_dir); | |
e98d950b | 1831 | #endif /* not WINDOWSNT */ |
4d7e6e51 | 1832 | } |
d0d6b7c5 | 1833 | |
4d7e6e51 PE |
1834 | /* Back in the parent process. */ |
1835 | ||
4d7e6e51 | 1836 | XPROCESS (process)->pid = pid; |
908589fd | 1837 | if (pid >= 0) |
0b3d4a47 | 1838 | XPROCESS (process)->alive = 1; |
d0d6b7c5 | 1839 | |
fa55d2aa PE |
1840 | /* Stop blocking in the parent. */ |
1841 | unblock_child_signal (); | |
4d7e6e51 | 1842 | unblock_input (); |
ececcbec | 1843 | |
d0d6b7c5 | 1844 | if (pid < 0) |
6311cf58 RS |
1845 | { |
1846 | if (forkin >= 0) | |
68c45bf0 | 1847 | emacs_close (forkin); |
6311cf58 | 1848 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1849 | emacs_close (forkout); |
6311cf58 | 1850 | } |
4a127b3b KH |
1851 | else |
1852 | { | |
1853 | /* vfork succeeded. */ | |
d0d6b7c5 | 1854 | |
e98d950b | 1855 | #ifdef WINDOWSNT |
4a127b3b | 1856 | register_child (pid, inchannel); |
e98d950b RS |
1857 | #endif /* WINDOWSNT */ |
1858 | ||
4a127b3b KH |
1859 | /* If the subfork execv fails, and it exits, |
1860 | this close hangs. I don't know why. | |
1861 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
1862 | { |
1863 | struct atimer *timer; | |
e9a9ae03 | 1864 | EMACS_TIME offset = make_emacs_time (1, 0); |
177c0ea7 | 1865 | |
30904ab7 | 1866 | stop_polling (); |
30904ab7 | 1867 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); |
177c0ea7 | 1868 | |
30904ab7 GM |
1869 | if (forkin >= 0) |
1870 | emacs_close (forkin); | |
1871 | ||
1872 | cancel_atimer (timer); | |
1873 | start_polling (); | |
1874 | } | |
177c0ea7 | 1875 | |
4a127b3b | 1876 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1877 | emacs_close (forkout); |
d0d6b7c5 | 1878 | |
4d7e6e51 | 1879 | pset_tty_name (XPROCESS (process), lisp_pty_name); |
2c4df143 | 1880 | |
49cdacda | 1881 | #ifndef WINDOWSNT |
2c4df143 YM |
1882 | /* Wait for child_setup to complete in case that vfork is |
1883 | actually defined as fork. The descriptor wait_child_setup[1] | |
1884 | of a pipe is closed at the child side either by close-on-exec | |
21e54a94 | 1885 | on successful execve or the _exit call in child_setup. */ |
2c4df143 YM |
1886 | { |
1887 | char dummy; | |
1888 | ||
1889 | emacs_close (wait_child_setup[1]); | |
1890 | emacs_read (wait_child_setup[0], &dummy, 1); | |
1891 | emacs_close (wait_child_setup[0]); | |
1892 | } | |
1893 | #endif | |
4a127b3b | 1894 | } |
3b9a3dfa | 1895 | |
4a127b3b KH |
1896 | /* Now generate the error if vfork failed. */ |
1897 | if (pid < 0) | |
1898 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 1899 | } |
d0d6b7c5 | 1900 | |
850d0752 | 1901 | void |
d3da34e0 | 1902 | create_pty (Lisp_Object process) |
850d0752 NR |
1903 | { |
1904 | int inchannel, outchannel; | |
0bce5d9e | 1905 | bool pty_flag = 0; |
850d0752 NR |
1906 | |
1907 | inchannel = outchannel = -1; | |
1908 | ||
1909 | #ifdef HAVE_PTYS | |
1910 | if (!NILP (Vprocess_connection_type)) | |
1911 | outchannel = inchannel = allocate_pty (); | |
1912 | ||
1913 | if (inchannel >= 0) | |
1914 | { | |
1915 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
1916 | /* On most USG systems it does not work to open the pty's tty here, | |
1917 | then close it and reopen it in the child. */ | |
850d0752 NR |
1918 | /* Don't let this terminal become our controlling terminal |
1919 | (in case we don't have one). */ | |
afd4052b | 1920 | int forkout = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
aba7731a | 1921 | if (forkout < 0) |
850d0752 | 1922 | report_file_error ("Opening pty", Qnil); |
019d2c4c | 1923 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
1924 | /* In the case that vfork is defined as fork, the parent process |
1925 | (Emacs) may send some data before the child process completes | |
1926 | tty options setup. So we setup tty before forking. */ | |
1927 | child_setup_tty (forkout); | |
019d2c4c | 1928 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
1929 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
1930 | pty_flag = 1; | |
1931 | } | |
1932 | #endif /* HAVE_PTYS */ | |
1933 | ||
850d0752 NR |
1934 | fcntl (inchannel, F_SETFL, O_NONBLOCK); |
1935 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
850d0752 NR |
1936 | |
1937 | /* Record this as an active process, with its channels. | |
1938 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1939 | chan_process[inchannel] = process; | |
1940 | XPROCESS (process)->infd = inchannel; | |
1941 | XPROCESS (process)->outfd = outchannel; | |
1942 | ||
1943 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1944 | It was only used for getting the foreground tty process, so now | |
1945 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1946 | more portable (see USG_SUBTTY_WORKS above). */ | |
1947 | ||
1948 | XPROCESS (process)->pty_flag = pty_flag; | |
6a09a33b | 1949 | pset_status (XPROCESS (process), Qrun); |
850d0752 NR |
1950 | setup_process_coding_systems (process); |
1951 | ||
1952 | FD_SET (inchannel, &input_wait_mask); | |
1953 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
1954 | if (inchannel > max_process_desc) | |
1955 | max_process_desc = inchannel; | |
1956 | ||
1957 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
1958 | #ifdef HAVE_PTYS |
1959 | if (pty_flag) | |
6a09a33b | 1960 | pset_tty_name (XPROCESS (process), build_string (pty_name)); |
8b9fc636 EZ |
1961 | else |
1962 | #endif | |
6a09a33b | 1963 | pset_tty_name (XPROCESS (process), Qnil); |
850d0752 NR |
1964 | } |
1965 | ||
e690ca94 | 1966 | \f |
e690ca94 KS |
1967 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
1968 | The address family of sa is not included in the result. */ | |
1969 | ||
1970 | static Lisp_Object | |
d3da34e0 | 1971 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
1972 | { |
1973 | Lisp_Object address; | |
1974 | int i; | |
1975 | unsigned char *cp; | |
1976 | register struct Lisp_Vector *p; | |
1977 | ||
63136da6 AS |
1978 | /* Workaround for a bug in getsockname on BSD: Names bound to |
1979 | sockets in the UNIX domain are inaccessible; getsockname returns | |
1980 | a zero length name. */ | |
89887d67 | 1981 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 1982 | return empty_unibyte_string; |
63136da6 | 1983 | |
e690ca94 KS |
1984 | switch (sa->sa_family) |
1985 | { | |
1986 | case AF_INET: | |
1987 | { | |
1988 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
1989 | len = sizeof (sin->sin_addr) + 1; | |
1990 | address = Fmake_vector (make_number (len), Qnil); | |
1991 | p = XVECTOR (address); | |
1992 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 1993 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
1994 | break; |
1995 | } | |
e1652a86 KS |
1996 | #ifdef AF_INET6 |
1997 | case AF_INET6: | |
1998 | { | |
1999 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2000 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2001 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2002 | address = Fmake_vector (make_number (len), Qnil); | |
2003 | p = XVECTOR (address); | |
2004 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2005 | for (i = 0; i < len; i++) | |
2006 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2007 | return address; | |
2008 | } | |
2009 | #endif | |
e690ca94 KS |
2010 | #ifdef HAVE_LOCAL_SOCKETS |
2011 | case AF_LOCAL: | |
2012 | { | |
fb23673a EZ |
2013 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2014 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2015 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2016 | break; |
fb23673a | 2017 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2018 | } |
2019 | #endif | |
2020 | default: | |
89887d67 | 2021 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2022 | address = Fcons (make_number (sa->sa_family), |
2023 | Fmake_vector (make_number (len), Qnil)); | |
2024 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2025 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2026 | break; |
2027 | } | |
2028 | ||
2029 | i = 0; | |
2030 | while (i < len) | |
2031 | p->contents[i++] = make_number (*cp++); | |
2032 | ||
2033 | return address; | |
2034 | } | |
2035 | ||
2036 | ||
2037 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2038 | ||
2039 | static int | |
d3da34e0 | 2040 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2041 | { |
2042 | register struct Lisp_Vector *p; | |
2043 | ||
2044 | if (VECTORP (address)) | |
2045 | { | |
2046 | p = XVECTOR (address); | |
eab3844f | 2047 | if (p->header.size == 5) |
e690ca94 KS |
2048 | { |
2049 | *familyp = AF_INET; | |
2050 | return sizeof (struct sockaddr_in); | |
2051 | } | |
e1652a86 | 2052 | #ifdef AF_INET6 |
eab3844f | 2053 | else if (p->header.size == 9) |
e1652a86 KS |
2054 | { |
2055 | *familyp = AF_INET6; | |
2056 | return sizeof (struct sockaddr_in6); | |
2057 | } | |
2058 | #endif | |
e690ca94 KS |
2059 | } |
2060 | #ifdef HAVE_LOCAL_SOCKETS | |
2061 | else if (STRINGP (address)) | |
2062 | { | |
2063 | *familyp = AF_LOCAL; | |
2064 | return sizeof (struct sockaddr_un); | |
2065 | } | |
2066 | #endif | |
d311d28c PE |
2067 | else if (CONSP (address) && TYPE_RANGED_INTEGERP (int, XCAR (address)) |
2068 | && VECTORP (XCDR (address))) | |
e690ca94 KS |
2069 | { |
2070 | struct sockaddr *sa; | |
2071 | *familyp = XINT (XCAR (address)); | |
2072 | p = XVECTOR (XCDR (address)); | |
eab3844f | 2073 | return p->header.size + sizeof (sa->sa_family); |
e690ca94 KS |
2074 | } |
2075 | return 0; | |
2076 | } | |
2077 | ||
2078 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2079 | |
2080 | The address format has been basically validated by | |
2081 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2082 | it could have come from user data. So if FAMILY is not valid, | |
2083 | we return after zeroing *SA. */ | |
e690ca94 KS |
2084 | |
2085 | static void | |
d3da34e0 | 2086 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2087 | { |
2088 | register struct Lisp_Vector *p; | |
34967d0f | 2089 | register unsigned char *cp = NULL; |
e690ca94 | 2090 | register int i; |
d311d28c | 2091 | EMACS_INT hostport; |
e690ca94 | 2092 | |
72af86bd | 2093 | memset (sa, 0, len); |
e690ca94 KS |
2094 | |
2095 | if (VECTORP (address)) | |
2096 | { | |
2097 | p = XVECTOR (address); | |
2098 | if (family == AF_INET) | |
2099 | { | |
2100 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2101 | len = sizeof (sin->sin_addr) + 1; | |
d311d28c PE |
2102 | hostport = XINT (p->contents[--len]); |
2103 | sin->sin_port = htons (hostport); | |
e690ca94 | 2104 | cp = (unsigned char *)&sin->sin_addr; |
9d1a8e5d | 2105 | sa->sa_family = family; |
e690ca94 | 2106 | } |
e1652a86 KS |
2107 | #ifdef AF_INET6 |
2108 | else if (family == AF_INET6) | |
2109 | { | |
2110 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2111 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2112 | len = sizeof (sin6->sin6_addr) + 1; | |
d311d28c PE |
2113 | hostport = XINT (p->contents[--len]); |
2114 | sin6->sin6_port = htons (hostport); | |
e1652a86 KS |
2115 | for (i = 0; i < len; i++) |
2116 | if (INTEGERP (p->contents[i])) | |
2117 | { | |
2118 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2119 | ip6[i] = ntohs (j); | |
2120 | } | |
9d1a8e5d | 2121 | sa->sa_family = family; |
0eb7675e | 2122 | return; |
e1652a86 KS |
2123 | } |
2124 | #endif | |
0eb7675e AS |
2125 | else |
2126 | return; | |
e690ca94 KS |
2127 | } |
2128 | else if (STRINGP (address)) | |
2129 | { | |
2130 | #ifdef HAVE_LOCAL_SOCKETS | |
2131 | if (family == AF_LOCAL) | |
2132 | { | |
fb23673a | 2133 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2134 | cp = SDATA (address); |
fb23673a EZ |
2135 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2136 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2137 | sa->sa_family = family; |
e690ca94 KS |
2138 | } |
2139 | #endif | |
2140 | return; | |
2141 | } | |
2142 | else | |
2143 | { | |
2144 | p = XVECTOR (XCDR (address)); | |
2145 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2146 | } | |
2147 | ||
2148 | for (i = 0; i < len; i++) | |
2149 | if (INTEGERP (p->contents[i])) | |
2150 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2151 | } | |
2152 | ||
2153 | #ifdef DATAGRAM_SOCKETS | |
2154 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2155 | 1, 1, 0, | |
2156 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2157 | (Lisp_Object process) |
e690ca94 KS |
2158 | { |
2159 | int channel; | |
2160 | ||
2161 | CHECK_PROCESS (process); | |
2162 | ||
2163 | if (!DATAGRAM_CONN_P (process)) | |
2164 | return Qnil; | |
2165 | ||
60f0fb11 | 2166 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2167 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2168 | datagram_address[channel].len); | |
2169 | } | |
2170 | ||
2171 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2172 | 2, 2, 0, | |
2173 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2174 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2175 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2176 | { |
2177 | int channel; | |
2178 | int family, len; | |
2179 | ||
2180 | CHECK_PROCESS (process); | |
2181 | ||
2182 | if (!DATAGRAM_CONN_P (process)) | |
2183 | return Qnil; | |
2184 | ||
60f0fb11 | 2185 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2186 | |
2187 | len = get_lisp_to_sockaddr_size (address, &family); | |
a9ebfa0b | 2188 | if (len == 0 || datagram_address[channel].len != len) |
e690ca94 KS |
2189 | return Qnil; |
2190 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2191 | return address; | |
2192 | } | |
2193 | #endif | |
2194 | \f | |
2195 | ||
5e2327cf | 2196 | static const struct socket_options { |
e690ca94 | 2197 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2198 | name without SO_ prefix. */ |
fce70521 | 2199 | const char *name; |
e690ca94 KS |
2200 | /* Option level SOL_... */ |
2201 | int optlevel; | |
2202 | /* Option number SO_... */ | |
2203 | int optnum; | |
6b61353c KH |
2204 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2205 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2206 | } socket_options[] = |
2207 | { | |
2208 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2209 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2210 | #endif |
2211 | #ifdef SO_BROADCAST | |
6b61353c | 2212 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2213 | #endif |
2214 | #ifdef SO_DONTROUTE | |
6b61353c | 2215 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2216 | #endif |
2217 | #ifdef SO_KEEPALIVE | |
6b61353c | 2218 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2219 | #endif |
2220 | #ifdef SO_LINGER | |
6b61353c | 2221 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2222 | #endif |
2223 | #ifdef SO_OOBINLINE | |
6b61353c | 2224 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2225 | #endif |
2226 | #ifdef SO_PRIORITY | |
6b61353c | 2227 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2228 | #endif |
2229 | #ifdef SO_REUSEADDR | |
6b61353c | 2230 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2231 | #endif |
6b61353c | 2232 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2233 | }; |
2234 | ||
6b61353c | 2235 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2236 | |
6b61353c KH |
2237 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2238 | Signals an error if setting a known option fails. | |
2239 | */ | |
e690ca94 KS |
2240 | |
2241 | static int | |
d3da34e0 | 2242 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2243 | { |
6b61353c | 2244 | char *name; |
5e2327cf | 2245 | const struct socket_options *sopt; |
6b61353c | 2246 | int ret = 0; |
e690ca94 | 2247 | |
6b61353c | 2248 | CHECK_SYMBOL (opt); |
e690ca94 | 2249 | |
51b59d79 | 2250 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2251 | for (sopt = socket_options; sopt->name; sopt++) |
2252 | if (strcmp (name, sopt->name) == 0) | |
2253 | break; | |
e690ca94 | 2254 | |
6b61353c KH |
2255 | switch (sopt->opttype) |
2256 | { | |
2257 | case SOPT_BOOL: | |
2258 | { | |
2259 | int optval; | |
2260 | optval = NILP (val) ? 0 : 1; | |
2261 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2262 | &optval, sizeof (optval)); | |
2263 | break; | |
2264 | } | |
e690ca94 | 2265 | |
6b61353c KH |
2266 | case SOPT_INT: |
2267 | { | |
2268 | int optval; | |
d311d28c | 2269 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2270 | optval = XINT (val); |
2271 | else | |
2272 | error ("Bad option value for %s", name); | |
2273 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2274 | &optval, sizeof (optval)); | |
2275 | break; | |
2276 | } | |
e690ca94 | 2277 | |
6b61353c KH |
2278 | #ifdef SO_BINDTODEVICE |
2279 | case SOPT_IFNAME: | |
2280 | { | |
2281 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2282 | |
6b61353c KH |
2283 | /* This is broken, at least in the Linux 2.4 kernel. |
2284 | To unbind, the arg must be a zero integer, not the empty string. | |
2285 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2286 | memset (devname, 0, sizeof devname); |
6b61353c | 2287 | if (STRINGP (val)) |
e690ca94 | 2288 | { |
51b59d79 | 2289 | char *arg = SSDATA (val); |
6b61353c | 2290 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2291 | memcpy (devname, arg, len); |
e690ca94 | 2292 | } |
6b61353c KH |
2293 | else if (!NILP (val)) |
2294 | error ("Bad option value for %s", name); | |
2295 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2296 | devname, IFNAMSIZ); | |
2297 | break; | |
2298 | } | |
2299 | #endif | |
e690ca94 | 2300 | |
177c0ea7 | 2301 | #ifdef SO_LINGER |
6b61353c KH |
2302 | case SOPT_LINGER: |
2303 | { | |
2304 | struct linger linger; | |
e690ca94 | 2305 | |
6b61353c KH |
2306 | linger.l_onoff = 1; |
2307 | linger.l_linger = 0; | |
d311d28c | 2308 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2309 | linger.l_linger = XINT (val); |
2310 | else | |
2311 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2312 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2313 | &linger, sizeof (linger)); | |
2314 | break; | |
2315 | } | |
e690ca94 | 2316 | #endif |
6b61353c KH |
2317 | |
2318 | default: | |
2319 | return 0; | |
e690ca94 | 2320 | } |
6b61353c KH |
2321 | |
2322 | if (ret < 0) | |
2323 | report_file_error ("Cannot set network option", | |
2324 | Fcons (opt, Fcons (val, Qnil))); | |
2325 | return (1 << sopt->optbit); | |
e690ca94 KS |
2326 | } |
2327 | ||
6b61353c KH |
2328 | |
2329 | DEFUN ("set-network-process-option", | |
2330 | Fset_network_process_option, Sset_network_process_option, | |
2331 | 3, 4, 0, | |
2332 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2333 | See `make-network-process' for a list of options and values. | |
2334 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2335 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2336 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2337 | { |
6b61353c KH |
2338 | int s; |
2339 | struct Lisp_Process *p; | |
e690ca94 | 2340 | |
e690ca94 | 2341 | CHECK_PROCESS (process); |
6b61353c KH |
2342 | p = XPROCESS (process); |
2343 | if (!NETCONN1_P (p)) | |
2344 | error ("Process is not a network process"); | |
2345 | ||
60f0fb11 | 2346 | s = p->infd; |
6b61353c KH |
2347 | if (s < 0) |
2348 | error ("Process is not running"); | |
2349 | ||
2350 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2351 | { |
6a09a33b | 2352 | pset_childp (p, Fplist_put (p->childp, option, value)); |
6b61353c | 2353 | return Qt; |
e690ca94 | 2354 | } |
6b61353c KH |
2355 | |
2356 | if (NILP (no_error)) | |
2357 | error ("Unknown or unsupported option"); | |
2358 | ||
2359 | return Qnil; | |
e690ca94 | 2360 | } |
6b61353c | 2361 | |
e690ca94 | 2362 | \f |
d888760c GM |
2363 | DEFUN ("serial-process-configure", |
2364 | Fserial_process_configure, | |
2365 | Sserial_process_configure, | |
2366 | 0, MANY, 0, | |
2367 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2368 | ||
2369 | Arguments are specified as keyword/argument pairs. Attributes that | |
2370 | are not given are re-initialized from the process's current | |
2371 | configuration (available via the function `process-contact') or set to | |
2372 | reasonable default values. The following arguments are defined: | |
2373 | ||
2374 | :process PROCESS | |
2375 | :name NAME | |
2376 | :buffer BUFFER | |
2377 | :port PORT | |
2378 | -- Any of these arguments can be given to identify the process that is | |
2379 | to be configured. If none of these arguments is given, the current | |
2380 | buffer's process is used. | |
2381 | ||
2382 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2383 | second, also called baud rate. Any value can be given for SPEED, but | |
2384 | most serial ports work only at a few defined values between 1200 and | |
2385 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2386 | serial port is not configured any further, i.e., all other arguments | |
2387 | are ignored. This may be useful for special serial ports such as | |
2388 | Bluetooth-to-serial converters which can only be configured through AT | |
2389 | commands. A value of nil for SPEED can be used only when passed | |
2390 | through `make-serial-process' or `serial-term'. | |
2391 | ||
2392 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2393 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2394 | ||
2395 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2396 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2397 | PARITY is not given, no parity is used. | |
2398 | ||
2399 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2400 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2401 | is not given or nil, 1 stopbit is used. | |
2402 | ||
2403 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2404 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2405 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2406 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2407 | flowcontrol is used. | |
2408 | ||
2409 | `serial-process-configure' is called by `make-serial-process' for the | |
2410 | initial configuration of the serial port. | |
2411 | ||
2412 | Examples: | |
2413 | ||
2414 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2415 | ||
2416 | \(serial-process-configure | |
2417 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2418 | ||
2419 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2420 | ||
2421 | usage: (serial-process-configure &rest ARGS) */) | |
f66c7cf8 | 2422 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2423 | { |
2424 | struct Lisp_Process *p; | |
2425 | Lisp_Object contact = Qnil; | |
2426 | Lisp_Object proc = Qnil; | |
2427 | struct gcpro gcpro1; | |
2428 | ||
2429 | contact = Flist (nargs, args); | |
2430 | GCPRO1 (contact); | |
2431 | ||
2432 | proc = Fplist_get (contact, QCprocess); | |
2433 | if (NILP (proc)) | |
2434 | proc = Fplist_get (contact, QCname); | |
2435 | if (NILP (proc)) | |
2436 | proc = Fplist_get (contact, QCbuffer); | |
2437 | if (NILP (proc)) | |
2438 | proc = Fplist_get (contact, QCport); | |
2439 | proc = get_process (proc); | |
2440 | p = XPROCESS (proc); | |
4d2b044c | 2441 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2442 | error ("Not a serial process"); |
2443 | ||
4d2b044c | 2444 | if (NILP (Fplist_get (p->childp, QCspeed))) |
d888760c GM |
2445 | { |
2446 | UNGCPRO; | |
2447 | return Qnil; | |
2448 | } | |
2449 | ||
2450 | serial_configure (p, contact); | |
2451 | ||
2452 | UNGCPRO; | |
2453 | return Qnil; | |
2454 | } | |
d888760c | 2455 | |
d888760c | 2456 | /* Used by make-serial-process to recover from errors. */ |
b766f867 PE |
2457 | static Lisp_Object |
2458 | make_serial_process_unwind (Lisp_Object proc) | |
d888760c GM |
2459 | { |
2460 | if (!PROCESSP (proc)) | |
1088b922 | 2461 | emacs_abort (); |
d888760c GM |
2462 | remove_process (proc); |
2463 | return Qnil; | |
2464 | } | |
d888760c | 2465 | |
d888760c GM |
2466 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2467 | 0, MANY, 0, | |
2468 | doc: /* Create and return a serial port process. | |
2469 | ||
2470 | In Emacs, serial port connections are represented by process objects, | |
2471 | so input and output work as for subprocesses, and `delete-process' | |
2472 | closes a serial port connection. However, a serial process has no | |
2473 | process id, it cannot be signaled, and the status codes are different | |
2474 | from normal processes. | |
2475 | ||
2476 | `make-serial-process' creates a process and a buffer, on which you | |
2477 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2478 | an interactive terminal. See below for examples. | |
2479 | ||
2480 | Arguments are specified as keyword/argument pairs. The following | |
2481 | arguments are defined: | |
2482 | ||
2483 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2484 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2485 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2486 | the backslashes in strings). | |
2487 | ||
2488 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
4373fd43 | 2489 | which this function calls. |
d888760c GM |
2490 | |
2491 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2492 | the value of PORT is used. | |
2493 | ||
2494 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2495 | with the process. Process output goes at the end of that buffer, | |
2496 | unless you specify an output stream or filter function to handle the | |
2497 | output. If BUFFER is not given, the value of NAME is used. | |
2498 | ||
2499 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2500 | system used for both reading and writing for this process. If CODING | |
2501 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2502 | ENCODING is used for writing. | |
2503 | ||
2504 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2505 | the process is running. If BOOL is not given, query before exiting. | |
2506 | ||
2507 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2508 | In the stopped state, a serial process does not accept incoming data, | |
2509 | but you can send outgoing data. The stopped state is cleared by | |
2510 | `continue-process' and set by `stop-process'. | |
2511 | ||
2512 | :filter FILTER -- Install FILTER as the process filter. | |
2513 | ||
2514 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2515 | ||
2516 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2517 | ||
d888760c GM |
2518 | :bytesize |
2519 | :parity | |
2520 | :stopbits | |
2521 | :flowcontrol | |
4373fd43 GM |
2522 | -- This function calls `serial-process-configure' to handle these |
2523 | arguments. | |
d888760c GM |
2524 | |
2525 | The original argument list, possibly modified by later configuration, | |
2526 | is available via the function `process-contact'. | |
2527 | ||
2528 | Examples: | |
2529 | ||
2530 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2531 | ||
2532 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2533 | ||
2534 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2535 | ||
2536 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2537 | ||
2538 | usage: (make-serial-process &rest ARGS) */) | |
f66c7cf8 | 2539 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2540 | { |
2541 | int fd = -1; | |
2542 | Lisp_Object proc, contact, port; | |
2543 | struct Lisp_Process *p; | |
2544 | struct gcpro gcpro1; | |
2545 | Lisp_Object name, buffer; | |
2546 | Lisp_Object tem, val; | |
9349e5f7 | 2547 | ptrdiff_t specpdl_count; |
d888760c GM |
2548 | |
2549 | if (nargs == 0) | |
2550 | return Qnil; | |
2551 | ||
2552 | contact = Flist (nargs, args); | |
2553 | GCPRO1 (contact); | |
2554 | ||
2555 | port = Fplist_get (contact, QCport); | |
2556 | if (NILP (port)) | |
2557 | error ("No port specified"); | |
2558 | CHECK_STRING (port); | |
2559 | ||
2560 | if (NILP (Fplist_member (contact, QCspeed))) | |
2561 | error (":speed not specified"); | |
2562 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2563 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2564 | ||
2565 | name = Fplist_get (contact, QCname); | |
2566 | if (NILP (name)) | |
2567 | name = port; | |
2568 | CHECK_STRING (name); | |
2569 | proc = make_process (name); | |
2570 | specpdl_count = SPECPDL_INDEX (); | |
2571 | record_unwind_protect (make_serial_process_unwind, proc); | |
2572 | p = XPROCESS (proc); | |
2573 | ||
51b59d79 | 2574 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2575 | p->infd = fd; |
2576 | p->outfd = fd; | |
2577 | if (fd > max_process_desc) | |
2578 | max_process_desc = fd; | |
2579 | chan_process[fd] = proc; | |
2580 | ||
2581 | buffer = Fplist_get (contact, QCbuffer); | |
2582 | if (NILP (buffer)) | |
2583 | buffer = name; | |
2584 | buffer = Fget_buffer_create (buffer); | |
6a09a33b PE |
2585 | pset_buffer (p, buffer); |
2586 | ||
2587 | pset_childp (p, contact); | |
2588 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
2589 | pset_type (p, Qserial); | |
2590 | pset_sentinel (p, Fplist_get (contact, QCsentinel)); | |
2591 | pset_filter (p, Fplist_get (contact, QCfilter)); | |
2592 | pset_log (p, Qnil); | |
d888760c GM |
2593 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
2594 | p->kill_without_query = 1; | |
2595 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
6a09a33b | 2596 | pset_command (p, Qt); |
d888760c GM |
2597 | p->pty_flag = 0; |
2598 | ||
4d2b044c | 2599 | if (!EQ (p->command, Qt)) |
d888760c GM |
2600 | { |
2601 | FD_SET (fd, &input_wait_mask); | |
2602 | FD_SET (fd, &non_keyboard_wait_mask); | |
2603 | } | |
2604 | ||
2605 | if (BUFFERP (buffer)) | |
2606 | { | |
4d2b044c | 2607 | set_marker_both (p->mark, buffer, |
d888760c GM |
2608 | BUF_ZV (XBUFFER (buffer)), |
2609 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2610 | } | |
2611 | ||
2612 | tem = Fplist_member (contact, QCcoding); | |
2613 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2614 | tem = Qnil; | |
2615 | ||
2616 | val = Qnil; | |
2617 | if (!NILP (tem)) | |
2618 | { | |
2619 | val = XCAR (XCDR (tem)); | |
2620 | if (CONSP (val)) | |
2621 | val = XCAR (val); | |
2622 | } | |
2623 | else if (!NILP (Vcoding_system_for_read)) | |
2624 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2625 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2626 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2627 | val = Qnil; |
6a09a33b | 2628 | pset_decode_coding_system (p, val); |
d888760c GM |
2629 | |
2630 | val = Qnil; | |
2631 | if (!NILP (tem)) | |
2632 | { | |
2633 | val = XCAR (XCDR (tem)); | |
2634 | if (CONSP (val)) | |
2635 | val = XCDR (val); | |
2636 | } | |
2637 | else if (!NILP (Vcoding_system_for_write)) | |
2638 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2639 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2640 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2641 | val = Qnil; |
6a09a33b | 2642 | pset_encode_coding_system (p, val); |
d888760c GM |
2643 | |
2644 | setup_process_coding_systems (proc); | |
6a09a33b | 2645 | pset_decoding_buf (p, empty_unibyte_string); |
d888760c | 2646 | p->decoding_carryover = 0; |
6a09a33b | 2647 | pset_encoding_buf (p, empty_unibyte_string); |
d888760c GM |
2648 | p->inherit_coding_system_flag |
2649 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2650 | ||
ed3751c8 | 2651 | Fserial_process_configure (nargs, args); |
d888760c GM |
2652 | |
2653 | specpdl_ptr = specpdl + specpdl_count; | |
2654 | ||
2655 | UNGCPRO; | |
2656 | return proc; | |
2657 | } | |
d888760c | 2658 | |
e690ca94 KS |
2659 | /* Create a network stream/datagram client/server process. Treated |
2660 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2661 | differences are in status display and process deletion. A network |
2662 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2663 | stop/continue it and deactivate/close it via delete-process */ |
2664 | ||
177c0ea7 JB |
2665 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2666 | 0, MANY, 0, | |
e690ca94 KS |
2667 | doc: /* Create and return a network server or client process. |
2668 | ||
fa9d4315 | 2669 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2670 | input and output work as for subprocesses and `delete-process' closes |
2671 | a network connection. However, a network process has no process id, | |
d22426e1 | 2672 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2673 | processes. |
2674 | ||
2675 | Arguments are specified as keyword/argument pairs. The following | |
2676 | arguments are defined: | |
2677 | ||
2678 | :name NAME -- NAME is name for process. It is modified if necessary | |
2679 | to make it unique. | |
2680 | ||
2681 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2682 | with the process. Process output goes at end of that buffer, unless | |
2683 | you specify an output stream or filter function to handle the output. | |
2684 | BUFFER may be also nil, meaning that this process is not associated | |
2685 | with any buffer. | |
2686 | ||
2687 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2688 | address. The symbol `local' specifies the local host. If specified | |
2689 | for a server process, it must be a valid name or address for the local | |
2690 | host, and only clients connecting to that address will be accepted. | |
2691 | ||
2692 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2693 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2694 | a random port number is selected for the server. (If Emacs was |
2695 | compiled with getaddrinfo, a port number can also be specified as a | |
2696 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2697 | |
9057ff80 | 2698 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2699 | stream type connection, `datagram' creates a datagram type connection, |
2700 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2701 | |
e690ca94 | 2702 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2703 | service specified by HOST and SERVICE. The default (nil) is to use |
2704 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2705 | and port number specified by HOST and SERVICE. Other address families | |
2706 | supported are: | |
e690ca94 | 2707 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2708 | ipv4 -- use IPv4 address family only. |
2709 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2710 | |
2711 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2712 | This parameter is ignored when opening a client process. When specified | |
2713 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2714 | ||
2715 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2716 | connection. This parameter is ignored when opening a stream server | |
2717 | process. For a datagram server process, it specifies the initial | |
2718 | setting of the remote datagram address. When specified for a client | |
2719 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2720 | ||
2721 | The format of ADDRESS depends on the address family: | |
2722 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2723 | corresponding to numeric IP address A.B.C.D and port number P. | |
2724 | - A local address is represented as a string with the address in the | |
2725 | local address space. | |
2726 | - An "unsupported family" address is represented by a cons (F . AV) | |
2727 | where F is the family number and AV is a vector containing the socket | |
2728 | address data with one element per address data byte. Do not rely on | |
2729 | this format in portable code, as it may depend on implementation | |
2730 | defined constants, data sizes, and data structure alignment. | |
2731 | ||
6b61353c KH |
2732 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2733 | system used for both reading and writing for this process. If CODING | |
2734 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2735 | ENCODING is used for writing. | |
e690ca94 KS |
2736 | |
2737 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2738 | return without waiting for the connection to complete; instead, the | |
2739 | sentinel function will be called with second arg matching "open" (if | |
2740 | successful) or "failed" when the connect completes. Default is to use | |
2741 | a blocking connect (i.e. wait) for stream type connections. | |
2742 | ||
2743 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2744 | running when Emacs is exited. |
e690ca94 KS |
2745 | |
2746 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2747 | In the stopped state, a server process does not accept new | |
2748 | connections, and a client process does not handle incoming traffic. | |
2749 | The stopped state is cleared by `continue-process' and set by | |
2750 | `stop-process'. | |
2751 | ||
2752 | :filter FILTER -- Install FILTER as the process filter. | |
2753 | ||
7392e23c KS |
2754 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2755 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2756 | If this keyword is not specified, the strings are multibyte if |
016a35df | 2757 | the default value of `enable-multibyte-characters' is non-nil. |
03f04413 | 2758 | |
e690ca94 KS |
2759 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2760 | ||
2761 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2762 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2763 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2764 | is the server process, CLIENT is the new process for the connection, | |
2765 | and MESSAGE is a string. | |
2766 | ||
faa7db08 | 2767 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2768 | |
6b61353c | 2769 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2770 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2771 | If QLEN is an integer, it is used as the max. length of the server's |
2772 | pending connection queue (also known as the backlog); the default | |
2773 | queue length is 5. Default is to create a client process. | |
2774 | ||
2775 | The following network options can be specified for this connection: | |
2776 | ||
2777 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2778 | :dontroute BOOL -- Only send to directly connected hosts. | |
2779 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2780 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2781 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2782 | :priority INT -- Set protocol defined priority for sent packets. | |
2783 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2784 | (this is allowed by default for a server process). | |
2785 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2786 | special privileges on some systems. | |
2787 | ||
2788 | Consult the relevant system programmer's manual pages for more | |
2789 | information on using these options. | |
2790 | ||
2791 | ||
2792 | A server process will listen for and accept connections from clients. | |
2793 | When a client connection is accepted, a new network process is created | |
2794 | for the connection with the following parameters: | |
e690ca94 | 2795 | |
e690ca94 KS |
2796 | - The client's process name is constructed by concatenating the server |
2797 | process' NAME and a client identification string. | |
2798 | - If the FILTER argument is non-nil, the client process will not get a | |
2799 | separate process buffer; otherwise, the client's process buffer is a newly | |
2800 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2801 | NAME concatenated with the client identification string. |
e690ca94 KS |
2802 | - The connection type and the process filter and sentinel parameters are |
2803 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2804 | - The client process' contact info is set according to the client's | |
2805 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2806 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2807 | |
2808 | Notice that the FILTER and SENTINEL args are never used directly by | |
2809 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2810 | the server process, but via the optional :log function, accepted (and |
2811 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2812 | |
365aee82 KS |
2813 | The original argument list, modified with the actual connection |
2814 | information, is available via the `process-contact' function. | |
365aee82 | 2815 | |
fa9d4315 | 2816 | usage: (make-network-process &rest ARGS) */) |
f66c7cf8 | 2817 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 JB |
2818 | { |
2819 | Lisp_Object proc; | |
e690ca94 KS |
2820 | Lisp_Object contact; |
2821 | struct Lisp_Process *p; | |
70dbdb36 | 2822 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2823 | struct addrinfo ai, *res, *lres; |
e1652a86 | 2824 | struct addrinfo hints; |
8ea90aa3 DN |
2825 | const char *portstring; |
2826 | char portbuf[128]; | |
70dbdb36 | 2827 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2828 | struct _emacs_addrinfo |
2829 | { | |
2830 | int ai_family; | |
2831 | int ai_socktype; | |
2832 | int ai_protocol; | |
2833 | int ai_addrlen; | |
2834 | struct sockaddr *ai_addr; | |
2835 | struct _emacs_addrinfo *ai_next; | |
2836 | } ai, *res, *lres; | |
418b48fd | 2837 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2838 | struct sockaddr_in address_in; |
2839 | #ifdef HAVE_LOCAL_SOCKETS | |
2840 | struct sockaddr_un address_un; | |
2841 | #endif | |
2842 | int port; | |
dd2a17ab KS |
2843 | int ret = 0; |
2844 | int xerrno = 0; | |
418b48fd | 2845 | int s = -1, outch, inch; |
e690ca94 | 2846 | struct gcpro gcpro1; |
d311d28c PE |
2847 | ptrdiff_t count = SPECPDL_INDEX (); |
2848 | ptrdiff_t count1; | |
e690ca94 KS |
2849 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2850 | Lisp_Object tem; | |
2851 | Lisp_Object name, buffer, host, service, address; | |
2852 | Lisp_Object filter, sentinel; | |
0bce5d9e PE |
2853 | bool is_non_blocking_client = 0; |
2854 | bool is_server = 0; | |
2855 | int backlog = 5; | |
9057ff80 | 2856 | int socktype; |
e690ca94 KS |
2857 | int family = -1; |
2858 | ||
2859 | if (nargs == 0) | |
2860 | return Qnil; | |
dd2a17ab | 2861 | |
e690ca94 KS |
2862 | /* Save arguments for process-contact and clone-process. */ |
2863 | contact = Flist (nargs, args); | |
2864 | GCPRO1 (contact); | |
2865 | ||
bff3ed0a RS |
2866 | #ifdef WINDOWSNT |
2867 | /* Ensure socket support is loaded if available. */ | |
2868 | init_winsock (TRUE); | |
2869 | #endif | |
2870 | ||
9057ff80 KS |
2871 | /* :type TYPE (nil: stream, datagram */ |
2872 | tem = Fplist_get (contact, QCtype); | |
2873 | if (NILP (tem)) | |
2874 | socktype = SOCK_STREAM; | |
2875 | #ifdef DATAGRAM_SOCKETS | |
2876 | else if (EQ (tem, Qdatagram)) | |
2877 | socktype = SOCK_DGRAM; | |
f00c449b SM |
2878 | #endif |
2879 | #ifdef HAVE_SEQPACKET | |
2880 | else if (EQ (tem, Qseqpacket)) | |
2881 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 2882 | #endif |
9057ff80 KS |
2883 | else |
2884 | error ("Unsupported connection type"); | |
e690ca94 KS |
2885 | |
2886 | /* :server BOOL */ | |
2887 | tem = Fplist_get (contact, QCserver); | |
2888 | if (!NILP (tem)) | |
2889 | { | |
75728599 JR |
2890 | /* Don't support network sockets when non-blocking mode is |
2891 | not available, since a blocked Emacs is not useful. */ | |
e690ca94 | 2892 | is_server = 1; |
d311d28c | 2893 | if (TYPE_RANGED_INTEGERP (int, tem)) |
6b61353c | 2894 | backlog = XINT (tem); |
e690ca94 KS |
2895 | } |
2896 | ||
2897 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2898 | QCaddress = is_server ? QClocal : QCremote; | |
2899 | ||
d7e344cd | 2900 | /* :nowait BOOL */ |
84b31826 | 2901 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
2902 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
2903 | { | |
2904 | #ifndef NON_BLOCKING_CONNECT | |
2905 | error ("Non-blocking connect not supported"); | |
2906 | #else | |
2907 | is_non_blocking_client = 1; | |
2908 | #endif | |
2909 | } | |
2910 | ||
2911 | name = Fplist_get (contact, QCname); | |
2912 | buffer = Fplist_get (contact, QCbuffer); | |
2913 | filter = Fplist_get (contact, QCfilter); | |
2914 | sentinel = Fplist_get (contact, QCsentinel); | |
2915 | ||
b7826503 | 2916 | CHECK_STRING (name); |
e690ca94 | 2917 | |
e690ca94 KS |
2918 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
2919 | ai.ai_socktype = socktype; | |
2920 | ai.ai_protocol = 0; | |
2921 | ai.ai_next = NULL; | |
2922 | res = &ai; | |
a319f7c1 | 2923 | |
e690ca94 KS |
2924 | /* :local ADDRESS or :remote ADDRESS */ |
2925 | address = Fplist_get (contact, QCaddress); | |
2926 | if (!NILP (address)) | |
a319f7c1 | 2927 | { |
e690ca94 KS |
2928 | host = service = Qnil; |
2929 | ||
2930 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2931 | error ("Malformed :address"); | |
2932 | ai.ai_family = family; | |
2933 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2934 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2935 | goto open_socket; | |
a319f7c1 | 2936 | } |
e690ca94 KS |
2937 | |
2938 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2939 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 2940 | if (NILP (tem)) |
a319f7c1 | 2941 | { |
5e617bc2 | 2942 | #if defined (HAVE_GETADDRINFO) && defined (AF_INET6) |
e1652a86 KS |
2943 | family = AF_UNSPEC; |
2944 | #else | |
2945 | family = AF_INET; | |
e690ca94 | 2946 | #endif |
a319f7c1 | 2947 | } |
e1652a86 KS |
2948 | #ifdef HAVE_LOCAL_SOCKETS |
2949 | else if (EQ (tem, Qlocal)) | |
2950 | family = AF_LOCAL; | |
2951 | #endif | |
2952 | #ifdef AF_INET6 | |
2953 | else if (EQ (tem, Qipv6)) | |
2954 | family = AF_INET6; | |
2955 | #endif | |
2956 | else if (EQ (tem, Qipv4)) | |
2957 | family = AF_INET; | |
d311d28c | 2958 | else if (TYPE_RANGED_INTEGERP (int, tem)) |
e1652a86 KS |
2959 | family = XINT (tem); |
2960 | else | |
e690ca94 | 2961 | error ("Unknown address family"); |
e1652a86 | 2962 | |
e690ca94 KS |
2963 | ai.ai_family = family; |
2964 | ||
2965 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2966 | service = Fplist_get (contact, QCservice); | |
2967 | ||
66a9f7f4 SM |
2968 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
2969 | host = Fplist_get (contact, QChost); | |
2970 | if (!NILP (host)) | |
2971 | { | |
2972 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
2973 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
2974 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
2975 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
2976 | CHECK_STRING (host); |
2977 | } | |
2978 | ||
e690ca94 KS |
2979 | #ifdef HAVE_LOCAL_SOCKETS |
2980 | if (family == AF_LOCAL) | |
d0d6b7c5 | 2981 | { |
66a9f7f4 SM |
2982 | if (!NILP (host)) |
2983 | { | |
2984 | message (":family local ignores the :host \"%s\" property", | |
2985 | SDATA (host)); | |
2986 | contact = Fplist_put (contact, QChost, Qnil); | |
2987 | host = Qnil; | |
2988 | } | |
b7826503 | 2989 | CHECK_STRING (service); |
72af86bd | 2990 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 2991 | address_un.sun_family = AF_LOCAL; |
e99a530f PE |
2992 | if (sizeof address_un.sun_path <= SBYTES (service)) |
2993 | error ("Service name too long"); | |
2994 | strcpy (address_un.sun_path, SSDATA (service)); | |
e690ca94 KS |
2995 | ai.ai_addr = (struct sockaddr *) &address_un; |
2996 | ai.ai_addrlen = sizeof address_un; | |
2997 | goto open_socket; | |
d0d6b7c5 | 2998 | } |
e690ca94 | 2999 | #endif |
a319f7c1 | 3000 | |
798b64bb KH |
3001 | /* Slow down polling to every ten seconds. |
3002 | Some kernels have a bug which causes retrying connect to fail | |
3003 | after a connect. Polling can interfere with gethostbyname too. */ | |
3004 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3005 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3006 | { |
3007 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3008 | bind_polling_period (10); | |
3009 | } | |
798b64bb KH |
3010 | #endif |
3011 | ||
a319f7c1 | 3012 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3013 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3014 | Otherwise, use getservbyname to lookup the service. */ | |
3015 | if (!NILP (host)) | |
3016 | { | |
3017 | ||
3018 | /* SERVICE can either be a string or int. | |
3019 | Convert to a C string for later use by getaddrinfo. */ | |
3020 | if (EQ (service, Qt)) | |
3021 | portstring = "0"; | |
3022 | else if (INTEGERP (service)) | |
3023 | { | |
c2982e87 | 3024 | sprintf (portbuf, "%"pI"d", XINT (service)); |
e690ca94 KS |
3025 | portstring = portbuf; |
3026 | } | |
3027 | else | |
3028 | { | |
3029 | CHECK_STRING (service); | |
42a5b22f | 3030 | portstring = SSDATA (service); |
e690ca94 KS |
3031 | } |
3032 | ||
3033 | immediate_quit = 1; | |
3034 | QUIT; | |
3035 | memset (&hints, 0, sizeof (hints)); | |
3036 | hints.ai_flags = 0; | |
e1652a86 | 3037 | hints.ai_family = family; |
e690ca94 KS |
3038 | hints.ai_socktype = socktype; |
3039 | hints.ai_protocol = 0; | |
08116b48 CY |
3040 | |
3041 | #ifdef HAVE_RES_INIT | |
3042 | res_init (); | |
3043 | #endif | |
3044 | ||
42a5b22f | 3045 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3046 | if (ret) |
f6270f62 | 3047 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3048 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3049 | #else |
42a5b22f | 3050 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3051 | #endif |
e690ca94 | 3052 | immediate_quit = 0; |
a319f7c1 | 3053 | |
e690ca94 KS |
3054 | goto open_socket; |
3055 | } | |
3056 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3057 | |
e690ca94 KS |
3058 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3059 | has been specified (e.g. for a local server process). */ | |
3060 | ||
3061 | if (EQ (service, Qt)) | |
3062 | port = 0; | |
3063 | else if (INTEGERP (service)) | |
3064 | port = htons ((unsigned short) XINT (service)); | |
3065 | else | |
616da37c | 3066 | { |
e690ca94 KS |
3067 | struct servent *svc_info; |
3068 | CHECK_STRING (service); | |
42a5b22f | 3069 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3070 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3071 | if (svc_info == 0) | |
d5db4077 | 3072 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3073 | port = svc_info->s_port; |
3074 | } | |
3075 | ||
72af86bd | 3076 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3077 | address_in.sin_family = family; |
3078 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3079 | address_in.sin_port = port; | |
3080 | ||
3081 | #ifndef HAVE_GETADDRINFO | |
3082 | if (!NILP (host)) | |
3083 | { | |
3084 | struct hostent *host_info_ptr; | |
3085 | ||
c5e87d10 | 3086 | /* gethostbyname may fail with TRY_AGAIN, but we don't honor that, |
f3d9532b | 3087 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3088 | immediate_quit = 1; |
3089 | QUIT; | |
08116b48 CY |
3090 | |
3091 | #ifdef HAVE_RES_INIT | |
3092 | res_init (); | |
3093 | #endif | |
3094 | ||
d5db4077 | 3095 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3096 | immediate_quit = 0; |
177c0ea7 | 3097 | |
e690ca94 KS |
3098 | if (host_info_ptr) |
3099 | { | |
72af86bd AS |
3100 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3101 | host_info_ptr->h_length); | |
e690ca94 KS |
3102 | family = host_info_ptr->h_addrtype; |
3103 | address_in.sin_family = family; | |
3104 | } | |
3105 | else | |
3106 | /* Attempt to interpret host as numeric inet address */ | |
3107 | { | |
4624371d | 3108 | unsigned long numeric_addr; |
51b59d79 | 3109 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3110 | if (numeric_addr == -1) |
d5db4077 | 3111 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3112 | |
72af86bd AS |
3113 | memcpy (&address_in.sin_addr, &numeric_addr, |
3114 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3115 | } |
d0d6b7c5 | 3116 | |
e690ca94 | 3117 | } |
dd2a17ab | 3118 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3119 | |
e690ca94 KS |
3120 | ai.ai_family = family; |
3121 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3122 | ai.ai_addrlen = sizeof address_in; | |
3123 | ||
3124 | open_socket: | |
3125 | ||
dd2a17ab | 3126 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3127 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3128 | s = -1; |
457a9bee | 3129 | |
dd2a17ab KS |
3130 | for (lres = res; lres; lres = lres->ai_next) |
3131 | { | |
f66c7cf8 | 3132 | ptrdiff_t optn; |
c5101a77 | 3133 | int optbits; |
6b61353c | 3134 | |
4dc343ee | 3135 | #ifdef WINDOWSNT |
649dbf36 | 3136 | retry_connect: |
4dc343ee | 3137 | #endif |
649dbf36 | 3138 | |
dd2a17ab KS |
3139 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3140 | if (s < 0) | |
3141 | { | |
3142 | xerrno = errno; | |
3143 | continue; | |
3144 | } | |
0f2ee0c1 | 3145 | |
e690ca94 KS |
3146 | #ifdef DATAGRAM_SOCKETS |
3147 | if (!is_server && socktype == SOCK_DGRAM) | |
3148 | break; | |
3149 | #endif /* DATAGRAM_SOCKETS */ | |
3150 | ||
dd2a17ab | 3151 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3152 | if (is_non_blocking_client) |
dd2a17ab | 3153 | { |
dd2a17ab | 3154 | ret = fcntl (s, F_SETFL, O_NONBLOCK); |
dd2a17ab KS |
3155 | if (ret < 0) |
3156 | { | |
3157 | xerrno = errno; | |
3158 | emacs_close (s); | |
3159 | s = -1; | |
3160 | continue; | |
3161 | } | |
3162 | } | |
3163 | #endif | |
177c0ea7 | 3164 | |
dd2a17ab | 3165 | /* Make us close S if quit. */ |
dd2a17ab KS |
3166 | record_unwind_protect (close_file_unwind, make_number (s)); |
3167 | ||
6b61353c KH |
3168 | /* Parse network options in the arg list. |
3169 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3170 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3171 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3172 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3173 | ||
e690ca94 KS |
3174 | if (is_server) |
3175 | { | |
3176 | /* Configure as a server socket. */ | |
6b61353c KH |
3177 | |
3178 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3179 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3180 | #ifdef HAVE_LOCAL_SOCKETS |
3181 | if (family != AF_LOCAL) | |
3182 | #endif | |
6b61353c KH |
3183 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3184 | { | |
3185 | int optval = 1; | |
3186 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3187 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3188 | } | |
177c0ea7 | 3189 | |
e690ca94 KS |
3190 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3191 | report_file_error ("Cannot bind server socket", Qnil); | |
3192 | ||
3193 | #ifdef HAVE_GETSOCKNAME | |
3194 | if (EQ (service, Qt)) | |
3195 | { | |
3196 | struct sockaddr_in sa1; | |
401bf9b4 | 3197 | socklen_t len1 = sizeof (sa1); |
e690ca94 KS |
3198 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3199 | { | |
3200 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3201 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3202 | contact = Fplist_put (contact, QCservice, service); |
3203 | } | |
3204 | } | |
3205 | #endif | |
3206 | ||
84b31826 | 3207 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3208 | report_file_error ("Cannot listen on server socket", Qnil); |
3209 | ||
3210 | break; | |
3211 | } | |
3212 | ||
dd2a17ab KS |
3213 | immediate_quit = 1; |
3214 | QUIT; | |
3215 | ||
dd2a17ab KS |
3216 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3217 | xerrno = errno; | |
3218 | ||
dd2a17ab KS |
3219 | if (ret == 0 || xerrno == EISCONN) |
3220 | { | |
dd2a17ab KS |
3221 | /* The unwind-protect will be discarded afterwards. |
3222 | Likewise for immediate_quit. */ | |
3223 | break; | |
3224 | } | |
3225 | ||
3226 | #ifdef NON_BLOCKING_CONNECT | |
3227 | #ifdef EINPROGRESS | |
e690ca94 | 3228 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3229 | break; |
3230 | #else | |
3231 | #ifdef EWOULDBLOCK | |
e690ca94 | 3232 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3233 | break; |
3234 | #endif | |
3235 | #endif | |
3236 | #endif | |
649dbf36 CY |
3237 | |
3238 | #ifndef WINDOWSNT | |
cd591dbc HE |
3239 | if (xerrno == EINTR) |
3240 | { | |
3241 | /* Unlike most other syscalls connect() cannot be called | |
3242 | again. (That would return EALREADY.) The proper way to | |
d35af63c | 3243 | wait for completion is pselect(). */ |
401bf9b4 PE |
3244 | int sc; |
3245 | socklen_t len; | |
cd591dbc HE |
3246 | SELECT_TYPE fdset; |
3247 | retry_select: | |
3248 | FD_ZERO (&fdset); | |
3249 | FD_SET (s, &fdset); | |
3250 | QUIT; | |
d35af63c | 3251 | sc = pselect (s + 1, NULL, &fdset, NULL, NULL, NULL); |
cd591dbc HE |
3252 | if (sc == -1) |
3253 | { | |
649dbf36 | 3254 | if (errno == EINTR) |
cd591dbc | 3255 | goto retry_select; |
649dbf36 | 3256 | else |
cd591dbc HE |
3257 | report_file_error ("select failed", Qnil); |
3258 | } | |
3259 | eassert (sc > 0); | |
649dbf36 CY |
3260 | |
3261 | len = sizeof xerrno; | |
3262 | eassert (FD_ISSET (s, &fdset)); | |
3263 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3264 | report_file_error ("getsockopt failed", Qnil); | |
3265 | if (xerrno) | |
3266 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3267 | else | |
3268 | break; | |
cd591dbc | 3269 | } |
649dbf36 | 3270 | #endif /* !WINDOWSNT */ |
e333e864 | 3271 | |
0f2ee0c1 RS |
3272 | immediate_quit = 0; |
3273 | ||
dd2a17ab | 3274 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3275 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3276 | emacs_close (s); |
dd2a17ab | 3277 | s = -1; |
649dbf36 CY |
3278 | |
3279 | #ifdef WINDOWSNT | |
3280 | if (xerrno == EINTR) | |
3281 | goto retry_connect; | |
3282 | #endif | |
dd2a17ab | 3283 | } |
457a9bee | 3284 | |
e690ca94 KS |
3285 | if (s >= 0) |
3286 | { | |
3287 | #ifdef DATAGRAM_SOCKETS | |
3288 | if (socktype == SOCK_DGRAM) | |
3289 | { | |
3290 | if (datagram_address[s].sa) | |
1088b922 | 3291 | emacs_abort (); |
23f86fce | 3292 | datagram_address[s].sa = xmalloc (lres->ai_addrlen); |
e690ca94 KS |
3293 | datagram_address[s].len = lres->ai_addrlen; |
3294 | if (is_server) | |
3295 | { | |
3296 | Lisp_Object remote; | |
72af86bd | 3297 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3298 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3299 | { | |
3300 | int rfamily, rlen; | |
3301 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
a9ebfa0b PE |
3302 | if (rlen != 0 && rfamily == lres->ai_family |
3303 | && rlen == lres->ai_addrlen) | |
e690ca94 KS |
3304 | conv_lisp_to_sockaddr (rfamily, remote, |
3305 | datagram_address[s].sa, rlen); | |
3306 | } | |
3307 | } | |
3308 | else | |
72af86bd | 3309 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3310 | } |
3311 | #endif | |
177c0ea7 | 3312 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3313 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3314 | #ifdef HAVE_GETSOCKNAME |
3315 | if (!is_server) | |
3316 | { | |
3317 | struct sockaddr_in sa1; | |
401bf9b4 | 3318 | socklen_t len1 = sizeof (sa1); |
2185db04 KS |
3319 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3320 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3321 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3322 | } |
3323 | #endif | |
e690ca94 KS |
3324 | } |
3325 | ||
54b3b62f YM |
3326 | immediate_quit = 0; |
3327 | ||
dd2a17ab | 3328 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3329 | if (res != &ai) |
54b3b62f | 3330 | { |
4d7e6e51 | 3331 | block_input (); |
54b3b62f | 3332 | freeaddrinfo (res); |
4d7e6e51 | 3333 | unblock_input (); |
54b3b62f | 3334 | } |
dd2a17ab KS |
3335 | #endif |
3336 | ||
e690ca94 KS |
3337 | /* Discard the unwind protect for closing S, if any. */ |
3338 | specpdl_ptr = specpdl + count1; | |
3339 | ||
3340 | /* Unwind bind_polling_period and request_sigio. */ | |
3341 | unbind_to (count, Qnil); | |
3342 | ||
dd2a17ab KS |
3343 | if (s < 0) |
3344 | { | |
dd2a17ab KS |
3345 | /* If non-blocking got this far - and failed - assume non-blocking is |
3346 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3347 | the normal blocking calls to open-network-stream handles this error |
3348 | better. */ | |
3349 | if (is_non_blocking_client) | |
dd2a17ab | 3350 | return Qnil; |
dd2a17ab | 3351 | |
d0d6b7c5 | 3352 | errno = xerrno; |
e690ca94 KS |
3353 | if (is_server) |
3354 | report_file_error ("make server process failed", contact); | |
3355 | else | |
3356 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3357 | } |
44ade2e9 | 3358 | |
d0d6b7c5 | 3359 | inch = s; |
59f23005 | 3360 | outch = s; |
d0d6b7c5 JB |
3361 | |
3362 | if (!NILP (buffer)) | |
3363 | buffer = Fget_buffer_create (buffer); | |
3364 | proc = make_process (name); | |
3365 | ||
3366 | chan_process[inch] = proc; | |
3367 | ||
d0d6b7c5 | 3368 | fcntl (inch, F_SETFL, O_NONBLOCK); |
d0d6b7c5 | 3369 | |
e690ca94 KS |
3370 | p = XPROCESS (proc); |
3371 | ||
6a09a33b PE |
3372 | pset_childp (p, contact); |
3373 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
3374 | pset_type (p, Qnetwork); | |
177c0ea7 | 3375 | |
6a09a33b PE |
3376 | pset_buffer (p, buffer); |
3377 | pset_sentinel (p, sentinel); | |
3378 | pset_filter (p, filter); | |
3379 | pset_log (p, Fplist_get (contact, QClog)); | |
e690ca94 | 3380 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
60f0fb11 | 3381 | p->kill_without_query = 1; |
e690ca94 | 3382 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
6a09a33b | 3383 | pset_command (p, Qt); |
6bfd98e7 | 3384 | p->pid = 0; |
60f0fb11 SM |
3385 | p->infd = inch; |
3386 | p->outfd = outch; | |
84b31826 | 3387 | if (is_server && socktype != SOCK_DGRAM) |
6a09a33b | 3388 | pset_status (p, Qlisten); |
dd2a17ab | 3389 | |
f523e0c3 SM |
3390 | /* Make the process marker point into the process buffer (if any). */ |
3391 | if (BUFFERP (buffer)) | |
4d2b044c | 3392 | set_marker_both (p->mark, buffer, |
f523e0c3 SM |
3393 | BUF_ZV (XBUFFER (buffer)), |
3394 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3395 | ||
dd2a17ab | 3396 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3397 | if (is_non_blocking_client) |
dd2a17ab KS |
3398 | { |
3399 | /* We may get here if connect did succeed immediately. However, | |
3400 | in that case, we still need to signal this like a non-blocking | |
3401 | connection. */ | |
6a09a33b | 3402 | pset_status (p, Qconnect); |
dd2a17ab KS |
3403 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3404 | { | |
3405 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3406 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3407 | num_pending_connects++; |
3408 | } | |
3409 | } | |
3410 | else | |
3411 | #endif | |
e690ca94 KS |
3412 | /* A server may have a client filter setting of Qt, but it must |
3413 | still listen for incoming connects unless it is stopped. */ | |
4d2b044c DA |
3414 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
3415 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3416 | { |
3417 | FD_SET (inch, &input_wait_mask); | |
3418 | FD_SET (inch, &non_keyboard_wait_mask); | |
3419 | } | |
3420 | ||
7d0e672e RS |
3421 | if (inch > max_process_desc) |
3422 | max_process_desc = inch; | |
d0d6b7c5 | 3423 | |
e690ca94 KS |
3424 | tem = Fplist_member (contact, QCcoding); |
3425 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3426 | tem = Qnil; /* No error message (too late!). */ | |
3427 | ||
67918941 RS |
3428 | { |
3429 | /* Setup coding systems for communicating with the network stream. */ | |
dbf31225 | 3430 | struct gcpro gcpro1; |
67918941 RS |
3431 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
3432 | Lisp_Object coding_systems = Qt; | |
b93aacde | 3433 | Lisp_Object fargs[5], val; |
67918941 | 3434 | |
e690ca94 | 3435 | if (!NILP (tem)) |
6b61353c KH |
3436 | { |
3437 | val = XCAR (XCDR (tem)); | |
3438 | if (CONSP (val)) | |
3439 | val = XCAR (val); | |
3440 | } | |
e690ca94 | 3441 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3442 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3443 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3444 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3445 | /* We dare not decode end-of-line format by setting VAL to |
3446 | Qraw_text, because the existing Emacs Lisp libraries | |
9858f6c3 | 3447 | assume that they receive bare code including a sequence of |
67918941 RS |
3448 | CR LF. */ |
3449 | val = Qnil; | |
3450 | else | |
3451 | { | |
991234f0 KS |
3452 | if (NILP (host) || NILP (service)) |
3453 | coding_systems = Qnil; | |
3454 | else | |
3455 | { | |
b93aacde PE |
3456 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3457 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3458 | GCPRO1 (proc); |
b93aacde | 3459 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3460 | UNGCPRO; |
991234f0 | 3461 | } |
67918941 | 3462 | if (CONSP (coding_systems)) |
70949dac | 3463 | val = XCAR (coding_systems); |
67918941 | 3464 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3465 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3466 | else |
3467 | val = Qnil; | |
3468 | } | |
6a09a33b | 3469 | pset_decode_coding_system (p, val); |
0fa1789e | 3470 | |
e690ca94 | 3471 | if (!NILP (tem)) |
6b61353c KH |
3472 | { |
3473 | val = XCAR (XCDR (tem)); | |
3474 | if (CONSP (val)) | |
3475 | val = XCDR (val); | |
3476 | } | |
e690ca94 | 3477 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3478 | val = Vcoding_system_for_write; |
4b4deea2 | 3479 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3480 | val = Qnil; |
3481 | else | |
3482 | { | |
3483 | if (EQ (coding_systems, Qt)) | |
3484 | { | |
991234f0 KS |
3485 | if (NILP (host) || NILP (service)) |
3486 | coding_systems = Qnil; | |
3487 | else | |
3488 | { | |
b93aacde PE |
3489 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3490 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3491 | GCPRO1 (proc); |
b93aacde | 3492 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3493 | UNGCPRO; |
991234f0 | 3494 | } |
67918941 RS |
3495 | } |
3496 | if (CONSP (coding_systems)) | |
70949dac | 3497 | val = XCDR (coding_systems); |
67918941 | 3498 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3499 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3500 | else |
3501 | val = Qnil; | |
3502 | } | |
6a09a33b | 3503 | pset_encode_coding_system (p, val); |
67918941 | 3504 | } |
03f04413 | 3505 | setup_process_coding_systems (proc); |
0fa1789e | 3506 | |
6a09a33b | 3507 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 3508 | p->decoding_carryover = 0; |
6a09a33b | 3509 | pset_encoding_buf (p, empty_unibyte_string); |
0fa1789e | 3510 | |
e690ca94 | 3511 | p->inherit_coding_system_flag |
e6fca843 | 3512 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3513 | |
d0d6b7c5 JB |
3514 | UNGCPRO; |
3515 | return proc; | |
3516 | } | |
d0d6b7c5 | 3517 | |
6b61353c | 3518 | \f |
5e617bc2 | 3519 | #if defined (HAVE_NET_IF_H) |
6b61353c KH |
3520 | |
3521 | #ifdef SIOCGIFCONF | |
3522 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3523 | doc: /* Return an alist of all network interfaces and their network address. | |
3524 | Each element is a cons, the car of which is a string containing the | |
3525 | interface name, and the cdr is the network address in internal | |
3526 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3527 | (void) |
6b61353c KH |
3528 | { |
3529 | struct ifconf ifconf; | |
377538cb JD |
3530 | struct ifreq *ifreq; |
3531 | void *buf = NULL; | |
70c60eb2 | 3532 | ptrdiff_t buf_size = 512; |
0bce5d9e | 3533 | int s; |
6b61353c KH |
3534 | Lisp_Object res; |
3535 | ||
3536 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3537 | if (s < 0) | |
3538 | return Qnil; | |
3539 | ||
76667214 | 3540 | do |
6b61353c | 3541 | { |
76667214 PE |
3542 | buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1); |
3543 | ifconf.ifc_buf = buf; | |
3544 | ifconf.ifc_len = buf_size; | |
156bffbe AS |
3545 | if (ioctl (s, SIOCGIFCONF, &ifconf)) |
3546 | { | |
3547 | close (s); | |
76667214 | 3548 | xfree (buf); |
156bffbe AS |
3549 | return Qnil; |
3550 | } | |
6b61353c | 3551 | } |
76667214 | 3552 | while (ifconf.ifc_len == buf_size); |
6b61353c KH |
3553 | |
3554 | close (s); | |
6b61353c KH |
3555 | |
3556 | res = Qnil; | |
156bffbe AS |
3557 | ifreq = ifconf.ifc_req; |
3558 | while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len) | |
6b61353c | 3559 | { |
377538cb JD |
3560 | struct ifreq *ifq = ifreq; |
3561 | #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN | |
156bffbe AS |
3562 | #define SIZEOF_IFREQ(sif) \ |
3563 | ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \ | |
3564 | ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len) | |
377538cb JD |
3565 | |
3566 | int len = SIZEOF_IFREQ (ifq); | |
3567 | #else | |
3568 | int len = sizeof (*ifreq); | |
3569 | #endif | |
6b61353c | 3570 | char namebuf[sizeof (ifq->ifr_name) + 1]; |
156bffbe | 3571 | ifreq = (struct ifreq *) ((char *) ifreq + len); |
377538cb | 3572 | |
6b61353c KH |
3573 | if (ifq->ifr_addr.sa_family != AF_INET) |
3574 | continue; | |
377538cb | 3575 | |
72af86bd | 3576 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3577 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3578 | res = Fcons (Fcons (build_string (namebuf), | |
3579 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3580 | sizeof (struct sockaddr))), | |
3581 | res); | |
3582 | } | |
3583 | ||
377538cb | 3584 | xfree (buf); |
6b61353c KH |
3585 | return res; |
3586 | } | |
3587 | #endif /* SIOCGIFCONF */ | |
3588 | ||
5e617bc2 | 3589 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
6b61353c KH |
3590 | |
3591 | struct ifflag_def { | |
3592 | int flag_bit; | |
91433552 | 3593 | const char *flag_sym; |
6b61353c KH |
3594 | }; |
3595 | ||
91433552 | 3596 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3597 | #ifdef IFF_UP |
3598 | { IFF_UP, "up" }, | |
3599 | #endif | |
3600 | #ifdef IFF_BROADCAST | |
3601 | { IFF_BROADCAST, "broadcast" }, | |
3602 | #endif | |
3603 | #ifdef IFF_DEBUG | |
3604 | { IFF_DEBUG, "debug" }, | |
3605 | #endif | |
3606 | #ifdef IFF_LOOPBACK | |
3607 | { IFF_LOOPBACK, "loopback" }, | |
3608 | #endif | |
3609 | #ifdef IFF_POINTOPOINT | |
3610 | { IFF_POINTOPOINT, "pointopoint" }, | |
3611 | #endif | |
3612 | #ifdef IFF_RUNNING | |
3613 | { IFF_RUNNING, "running" }, | |
3614 | #endif | |
3615 | #ifdef IFF_NOARP | |
3616 | { IFF_NOARP, "noarp" }, | |
3617 | #endif | |
3618 | #ifdef IFF_PROMISC | |
3619 | { IFF_PROMISC, "promisc" }, | |
3620 | #endif | |
3621 | #ifdef IFF_NOTRAILERS | |
377538cb JD |
3622 | #ifdef NS_IMPL_COCOA |
3623 | /* Really means smart, notrailers is obsolete */ | |
3624 | { IFF_NOTRAILERS, "smart" }, | |
3625 | #else | |
6b61353c KH |
3626 | { IFF_NOTRAILERS, "notrailers" }, |
3627 | #endif | |
377538cb | 3628 | #endif |
6b61353c KH |
3629 | #ifdef IFF_ALLMULTI |
3630 | { IFF_ALLMULTI, "allmulti" }, | |
3631 | #endif | |
3632 | #ifdef IFF_MASTER | |
3633 | { IFF_MASTER, "master" }, | |
3634 | #endif | |
3635 | #ifdef IFF_SLAVE | |
3636 | { IFF_SLAVE, "slave" }, | |
3637 | #endif | |
3638 | #ifdef IFF_MULTICAST | |
3639 | { IFF_MULTICAST, "multicast" }, | |
3640 | #endif | |
3641 | #ifdef IFF_PORTSEL | |
3642 | { IFF_PORTSEL, "portsel" }, | |
3643 | #endif | |
3644 | #ifdef IFF_AUTOMEDIA | |
3645 | { IFF_AUTOMEDIA, "automedia" }, | |
3646 | #endif | |
3647 | #ifdef IFF_DYNAMIC | |
3648 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3649 | #endif |
2026418c YM |
3650 | #ifdef IFF_OACTIVE |
3651 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3652 | #endif |
3653 | #ifdef IFF_SIMPLEX | |
3654 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3655 | #endif | |
3656 | #ifdef IFF_LINK0 | |
3657 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3658 | #endif | |
3659 | #ifdef IFF_LINK1 | |
3660 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3661 | #endif | |
3662 | #ifdef IFF_LINK2 | |
3663 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3664 | #endif |
3665 | { 0, 0 } | |
3666 | }; | |
3667 | ||
3668 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3669 | doc: /* Return information about network interface named IFNAME. | |
3670 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3671 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
e4920bc9 | 3672 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and |
6b61353c | 3673 | FLAGS is the current flags of the interface. */) |
5842a27b | 3674 | (Lisp_Object ifname) |
6b61353c KH |
3675 | { |
3676 | struct ifreq rq; | |
3677 | Lisp_Object res = Qnil; | |
3678 | Lisp_Object elt; | |
3679 | int s; | |
0bce5d9e | 3680 | bool any = 0; |
0a0d27fb PE |
3681 | #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \ |
3682 | && defined HAVE_GETIFADDRS && defined LLADDR) | |
377538cb JD |
3683 | struct ifaddrs *ifap; |
3684 | #endif | |
6b61353c KH |
3685 | |
3686 | CHECK_STRING (ifname); | |
3687 | ||
e99a530f PE |
3688 | if (sizeof rq.ifr_name <= SBYTES (ifname)) |
3689 | error ("interface name too long"); | |
3690 | strcpy (rq.ifr_name, SSDATA (ifname)); | |
6b61353c KH |
3691 | |
3692 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3693 | if (s < 0) | |
3694 | return Qnil; | |
3695 | ||
3696 | elt = Qnil; | |
5e617bc2 | 3697 | #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS) |
6b61353c KH |
3698 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3699 | { | |
3700 | int flags = rq.ifr_flags; | |
91433552 | 3701 | const struct ifflag_def *fp; |
6b61353c KH |
3702 | int fnum; |
3703 | ||
377538cb JD |
3704 | /* If flags is smaller than int (i.e. short) it may have the high bit set |
3705 | due to IFF_MULTICAST. In that case, sign extending it into | |
3706 | an int is wrong. */ | |
3707 | if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags)) | |
3708 | flags = (unsigned short) rq.ifr_flags; | |
3709 | ||
bc57d757 | 3710 | any = 1; |
82a80058 | 3711 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3712 | { |
3713 | if (flags & fp->flag_bit) | |
3714 | { | |
3715 | elt = Fcons (intern (fp->flag_sym), elt); | |
3716 | flags -= fp->flag_bit; | |
3717 | } | |
3718 | } | |
fa3c87e1 | 3719 | for (fnum = 0; flags && fnum < 32; flags >>= 1, fnum++) |
6b61353c | 3720 | { |
fa3c87e1 | 3721 | if (flags & 1) |
6b61353c KH |
3722 | { |
3723 | elt = Fcons (make_number (fnum), elt); | |
3724 | } | |
3725 | } | |
3726 | } | |
3727 | #endif | |
3728 | res = Fcons (elt, res); | |
3729 | ||
3730 | elt = Qnil; | |
5e617bc2 | 3731 | #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR) |
6b61353c KH |
3732 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3733 | { | |
3734 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3735 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3736 | int n; | |
3737 | ||
bc57d757 | 3738 | any = 1; |
6b61353c KH |
3739 | for (n = 0; n < 6; n++) |
3740 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3741 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3742 | } | |
5e617bc2 | 3743 | #elif defined (HAVE_GETIFADDRS) && defined (LLADDR) |
377538cb JD |
3744 | if (getifaddrs (&ifap) != -1) |
3745 | { | |
3746 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3747 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3748 | struct ifaddrs *it; | |
3749 | ||
3750 | for (it = ifap; it != NULL; it = it->ifa_next) | |
3751 | { | |
3752 | struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr; | |
3753 | unsigned char linkaddr[6]; | |
3754 | int n; | |
3755 | ||
3756 | if (it->ifa_addr->sa_family != AF_LINK | |
3757 | || strcmp (it->ifa_name, SSDATA (ifname)) != 0 | |
3758 | || sdl->sdl_alen != 6) | |
3759 | continue; | |
3760 | ||
5e617bc2 | 3761 | memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen); |
377538cb JD |
3762 | for (n = 0; n < 6; n++) |
3763 | p->contents[n] = make_number (linkaddr[n]); | |
3764 | ||
3765 | elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr); | |
3766 | break; | |
3767 | } | |
3768 | } | |
3769 | #ifdef HAVE_FREEIFADDRS | |
3770 | freeifaddrs (ifap); | |
6b61353c | 3771 | #endif |
377538cb JD |
3772 | |
3773 | #endif /* HAVE_GETIFADDRS && LLADDR */ | |
3774 | ||
6b61353c KH |
3775 | res = Fcons (elt, res); |
3776 | ||
3777 | elt = Qnil; | |
5e617bc2 | 3778 | #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3779 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3780 | { | |
bc57d757 | 3781 | any = 1; |
2026418c | 3782 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3783 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3784 | #else |
3785 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3786 | #endif | |
6b61353c KH |
3787 | } |
3788 | #endif | |
3789 | res = Fcons (elt, res); | |
3790 | ||
3791 | elt = Qnil; | |
5e617bc2 | 3792 | #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
6b61353c KH |
3793 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3794 | { | |
bc57d757 | 3795 | any = 1; |
6b61353c KH |
3796 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); |
3797 | } | |
3798 | #endif | |
3799 | res = Fcons (elt, res); | |
3800 | ||
3801 | elt = Qnil; | |
5e617bc2 | 3802 | #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR) |
6b61353c KH |
3803 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3804 | { | |
bc57d757 | 3805 | any = 1; |
6b61353c KH |
3806 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); |
3807 | } | |
3808 | #endif | |
3809 | res = Fcons (elt, res); | |
3810 | ||
3811 | close (s); | |
3812 | ||
3813 | return any ? res : Qnil; | |
3814 | } | |
3815 | #endif | |
5e617bc2 | 3816 | #endif /* defined (HAVE_NET_IF_H) */ |
6b61353c | 3817 | |
04391069 RS |
3818 | /* Turn off input and output for process PROC. */ |
3819 | ||
40ccffa6 | 3820 | static void |
d3da34e0 | 3821 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3822 | { |
3823 | register int inchannel, outchannel; | |
3824 | register struct Lisp_Process *p = XPROCESS (proc); | |
3825 | ||
9c6c6f49 CY |
3826 | #ifdef HAVE_GNUTLS |
3827 | /* Delete GnuTLS structures in PROC, if any. */ | |
3828 | emacs_gnutls_deinit (proc); | |
3829 | #endif /* HAVE_GNUTLS */ | |
3830 | ||
60f0fb11 SM |
3831 | inchannel = p->infd; |
3832 | outchannel = p->outfd; | |
d0d6b7c5 | 3833 | |
6b61353c | 3834 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3835 | if (p->read_output_delay > 0) |
6b61353c KH |
3836 | { |
3837 | if (--process_output_delay_count < 0) | |
3838 | process_output_delay_count = 0; | |
60f0fb11 SM |
3839 | p->read_output_delay = 0; |
3840 | p->read_output_skip = 0; | |
6b61353c KH |
3841 | } |
3842 | #endif | |
f3d9532b | 3843 | |
a9f2c884 | 3844 | if (inchannel >= 0) |
d0d6b7c5 JB |
3845 | { |
3846 | /* Beware SIGCHLD hereabouts. */ | |
3847 | flush_pending_output (inchannel); | |
68c45bf0 | 3848 | emacs_close (inchannel); |
a9f2c884 | 3849 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3850 | emacs_close (outchannel); |
d0d6b7c5 | 3851 | |
60f0fb11 SM |
3852 | p->infd = -1; |
3853 | p->outfd = -1; | |
e690ca94 KS |
3854 | #ifdef DATAGRAM_SOCKETS |
3855 | if (DATAGRAM_CHAN_P (inchannel)) | |
3856 | { | |
3857 | xfree (datagram_address[inchannel].sa); | |
3858 | datagram_address[inchannel].sa = 0; | |
3859 | datagram_address[inchannel].len = 0; | |
3860 | } | |
3861 | #endif | |
d0d6b7c5 JB |
3862 | chan_process[inchannel] = Qnil; |
3863 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3864 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3865 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3866 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3867 | { | |
3868 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 3869 | FD_CLR (inchannel, &write_mask); |
dd2a17ab | 3870 | if (--num_pending_connects < 0) |
1088b922 | 3871 | emacs_abort (); |
dd2a17ab | 3872 | } |
bad49fc7 | 3873 | #endif |
7d0e672e RS |
3874 | if (inchannel == max_process_desc) |
3875 | { | |
3876 | int i; | |
3877 | /* We just closed the highest-numbered process input descriptor, | |
3878 | so recompute the highest-numbered one now. */ | |
3879 | max_process_desc = 0; | |
3880 | for (i = 0; i < MAXDESC; i++) | |
3881 | if (!NILP (chan_process[i])) | |
3882 | max_process_desc = i; | |
3883 | } | |
d0d6b7c5 JB |
3884 | } |
3885 | } | |
3886 | ||
d0d6b7c5 JB |
3887 | \f |
3888 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3889 | 0, 4, 0, |
fdb82f93 PJ |
3890 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3891 | It is read into the process' buffers or given to their filter functions. | |
3892 | Non-nil arg PROCESS means do not return until some output has been received | |
3893 | from PROCESS. | |
5088da42 | 3894 | |
2a7bb882 MR |
3895 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
3896 | and milliseconds to wait; return after that much time whether or not | |
3897 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 3898 | it specifies a fractional number of seconds to wait. |
891bd142 | 3899 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 3900 | |
107ed38d KS |
3901 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3902 | from PROCESS, suspending reading output from other processes. | |
3903 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 3904 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 3905 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 3906 | { |
d35af63c PE |
3907 | intmax_t secs; |
3908 | int nsecs; | |
d0d6b7c5 | 3909 | |
0748d150 | 3910 | if (! NILP (process)) |
b7826503 | 3911 | CHECK_PROCESS (process); |
107ed38d KS |
3912 | else |
3913 | just_this_one = Qnil; | |
0748d150 | 3914 | |
891bd142 SM |
3915 | if (!NILP (millisec)) |
3916 | { /* Obsolete calling convention using integers rather than floats. */ | |
3917 | CHECK_NUMBER (millisec); | |
3918 | if (NILP (seconds)) | |
3919 | seconds = make_float (XINT (millisec) / 1000.0); | |
3920 | else | |
3921 | { | |
3922 | CHECK_NUMBER (seconds); | |
3923 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
3924 | } | |
3925 | } | |
3926 | ||
d35af63c PE |
3927 | secs = 0; |
3928 | nsecs = -1; | |
3929 | ||
5088da42 | 3930 | if (!NILP (seconds)) |
d0d6b7c5 | 3931 | { |
d35af63c PE |
3932 | if (INTEGERP (seconds)) |
3933 | { | |
908589fd | 3934 | if (XINT (seconds) > 0) |
d35af63c PE |
3935 | { |
3936 | secs = XINT (seconds); | |
3937 | nsecs = 0; | |
3938 | } | |
3939 | } | |
3940 | else if (FLOATP (seconds)) | |
3941 | { | |
908589fd | 3942 | if (XFLOAT_DATA (seconds) > 0) |
d35af63c PE |
3943 | { |
3944 | EMACS_TIME t = EMACS_TIME_FROM_DOUBLE (XFLOAT_DATA (seconds)); | |
f1dd8073 | 3945 | secs = min (EMACS_SECS (t), WAIT_READING_MAX); |
d35af63c PE |
3946 | nsecs = EMACS_NSECS (t); |
3947 | } | |
3948 | } | |
3949 | else | |
3950 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 3951 | } |
d35af63c PE |
3952 | else if (! NILP (process)) |
3953 | nsecs = 0; | |
d0d6b7c5 JB |
3954 | |
3955 | return | |
d35af63c | 3956 | (wait_reading_process_output (secs, nsecs, 0, 0, |
214d6069 KS |
3957 | Qnil, |
3958 | !NILP (process) ? XPROCESS (process) : NULL, | |
3959 | NILP (just_this_one) ? 0 : | |
3960 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3961 | ? Qt : Qnil); |
3962 | } | |
3963 | ||
e690ca94 KS |
3964 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3965 | ||
0bce5d9e | 3966 | static EMACS_INT connect_counter = 0; |
e690ca94 KS |
3967 | |
3968 | static void | |
d3da34e0 | 3969 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
3970 | { |
3971 | Lisp_Object proc, caller, name, buffer; | |
3972 | Lisp_Object contact, host, service; | |
3973 | struct Lisp_Process *ps= XPROCESS (server); | |
3974 | struct Lisp_Process *p; | |
3975 | int s; | |
3976 | union u_sockaddr { | |
3977 | struct sockaddr sa; | |
3978 | struct sockaddr_in in; | |
e1652a86 KS |
3979 | #ifdef AF_INET6 |
3980 | struct sockaddr_in6 in6; | |
3981 | #endif | |
e690ca94 KS |
3982 | #ifdef HAVE_LOCAL_SOCKETS |
3983 | struct sockaddr_un un; | |
3984 | #endif | |
3985 | } saddr; | |
401bf9b4 | 3986 | socklen_t len = sizeof saddr; |
e690ca94 KS |
3987 | |
3988 | s = accept (channel, &saddr.sa, &len); | |
3989 | ||
3990 | if (s < 0) | |
3991 | { | |
3992 | int code = errno; | |
3993 | ||
3994 | if (code == EAGAIN) | |
3995 | return; | |
3996 | #ifdef EWOULDBLOCK | |
3997 | if (code == EWOULDBLOCK) | |
3998 | return; | |
3999 | #endif | |
4000 | ||
4d2b044c DA |
4001 | if (!NILP (ps->log)) |
4002 | call3 (ps->log, server, Qnil, | |
e690ca94 KS |
4003 | concat3 (build_string ("accept failed with code"), |
4004 | Fnumber_to_string (make_number (code)), | |
4005 | build_string ("\n"))); | |
4006 | return; | |
4007 | } | |
4008 | ||
4009 | connect_counter++; | |
4010 | ||
4011 | /* Setup a new process to handle the connection. */ | |
4012 | ||
4013 | /* Generate a unique identification of the caller, and build contact | |
4014 | information for this process. */ | |
4015 | host = Qt; | |
4016 | service = Qnil; | |
4017 | switch (saddr.sa.sa_family) | |
4018 | { | |
4019 | case AF_INET: | |
4020 | { | |
4021 | Lisp_Object args[5]; | |
4022 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4023 | args[0] = build_string ("%d.%d.%d.%d"); | |
4024 | args[1] = make_number (*ip++); | |
4025 | args[2] = make_number (*ip++); | |
4026 | args[3] = make_number (*ip++); | |
4027 | args[4] = make_number (*ip++); | |
4028 | host = Fformat (5, args); | |
4029 | service = make_number (ntohs (saddr.in.sin_port)); | |
4030 | ||
4031 | args[0] = build_string (" <%s:%d>"); | |
4032 | args[1] = host; | |
4033 | args[2] = service; | |
4034 | caller = Fformat (3, args); | |
4035 | } | |
4036 | break; | |
4037 | ||
e1652a86 KS |
4038 | #ifdef AF_INET6 |
4039 | case AF_INET6: | |
4040 | { | |
4041 | Lisp_Object args[9]; | |
4042 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4043 | int i; | |
4044 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4045 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4046 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4047 | host = Fformat (9, args); |
4048 | service = make_number (ntohs (saddr.in.sin_port)); | |
4049 | ||
4050 | args[0] = build_string (" <[%s]:%d>"); | |
4051 | args[1] = host; | |
4052 | args[2] = service; | |
4053 | caller = Fformat (3, args); | |
4054 | } | |
4055 | break; | |
4056 | #endif | |
4057 | ||
e690ca94 KS |
4058 | #ifdef HAVE_LOCAL_SOCKETS |
4059 | case AF_LOCAL: | |
4060 | #endif | |
4061 | default: | |
4062 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4063 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4064 | break; |
4065 | } | |
4066 | ||
4067 | /* Create a new buffer name for this process if it doesn't have a | |
4068 | filter. The new buffer name is based on the buffer name or | |
4069 | process name of the server process concatenated with the caller | |
4070 | identification. */ | |
4071 | ||
1aa8d505 SM |
4072 | if (!(EQ (ps->filter, Qinternal_default_process_filter) |
4073 | || EQ (ps->filter, Qt))) | |
e690ca94 KS |
4074 | buffer = Qnil; |
4075 | else | |
4076 | { | |
4d2b044c | 4077 | buffer = ps->buffer; |
e690ca94 KS |
4078 | if (!NILP (buffer)) |
4079 | buffer = Fbuffer_name (buffer); | |
4080 | else | |
4d2b044c | 4081 | buffer = ps->name; |
e690ca94 KS |
4082 | if (!NILP (buffer)) |
4083 | { | |
4084 | buffer = concat2 (buffer, caller); | |
4085 | buffer = Fget_buffer_create (buffer); | |
4086 | } | |
4087 | } | |
4088 | ||
4089 | /* Generate a unique name for the new server process. Combine the | |
4090 | server process name with the caller identification. */ | |
4091 | ||
4d2b044c | 4092 | name = concat2 (ps->name, caller); |
e690ca94 KS |
4093 | proc = make_process (name); |
4094 | ||
4095 | chan_process[s] = proc; | |
4096 | ||
e690ca94 | 4097 | fcntl (s, F_SETFL, O_NONBLOCK); |
e690ca94 KS |
4098 | |
4099 | p = XPROCESS (proc); | |
4100 | ||
4101 | /* Build new contact information for this setup. */ | |
4d2b044c | 4102 | contact = Fcopy_sequence (ps->childp); |
e690ca94 KS |
4103 | contact = Fplist_put (contact, QCserver, Qnil); |
4104 | contact = Fplist_put (contact, QChost, host); | |
4105 | if (!NILP (service)) | |
4106 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4107 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4108 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4109 | #ifdef HAVE_GETSOCKNAME | |
4110 | len = sizeof saddr; | |
2185db04 | 4111 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4112 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4113 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4114 | #endif | |
4115 | ||
6a09a33b PE |
4116 | pset_childp (p, contact); |
4117 | pset_plist (p, Fcopy_sequence (ps->plist)); | |
4118 | pset_type (p, Qnetwork); | |
ac4a7584 | 4119 | |
6a09a33b PE |
4120 | pset_buffer (p, buffer); |
4121 | pset_sentinel (p, ps->sentinel); | |
4122 | pset_filter (p, ps->filter); | |
4123 | pset_command (p, Qnil); | |
6bfd98e7 | 4124 | p->pid = 0; |
60f0fb11 SM |
4125 | p->infd = s; |
4126 | p->outfd = s; | |
6a09a33b | 4127 | pset_status (p, Qrun); |
e690ca94 KS |
4128 | |
4129 | /* Client processes for accepted connections are not stopped initially. */ | |
4d2b044c | 4130 | if (!EQ (p->filter, Qt)) |
e690ca94 KS |
4131 | { |
4132 | FD_SET (s, &input_wait_mask); | |
4133 | FD_SET (s, &non_keyboard_wait_mask); | |
4134 | } | |
4135 | ||
4136 | if (s > max_process_desc) | |
4137 | max_process_desc = s; | |
4138 | ||
177c0ea7 | 4139 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4140 | This seems to be the proper thing to do, as the coding system |
4141 | of the new process should reflect the settings at the time the | |
1aa8d505 | 4142 | server socket was opened; not the current settings. */ |
e690ca94 | 4143 | |
6a09a33b PE |
4144 | pset_decode_coding_system (p, ps->decode_coding_system); |
4145 | pset_encode_coding_system (p, ps->encode_coding_system); | |
03f04413 | 4146 | setup_process_coding_systems (proc); |
e690ca94 | 4147 | |
6a09a33b | 4148 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 4149 | p->decoding_carryover = 0; |
6a09a33b | 4150 | pset_encoding_buf (p, empty_unibyte_string); |
e690ca94 KS |
4151 | |
4152 | p->inherit_coding_system_flag | |
60f0fb11 | 4153 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 | 4154 | |
4d2b044c DA |
4155 | if (!NILP (ps->log)) |
4156 | call3 (ps->log, server, proc, | |
e690ca94 KS |
4157 | concat3 (build_string ("accept from "), |
4158 | (STRINGP (host) ? host : build_string ("-")), | |
4159 | build_string ("\n"))); | |
4160 | ||
1aa8d505 SM |
4161 | exec_sentinel (proc, |
4162 | concat3 (build_string ("open from "), | |
4163 | (STRINGP (host) ? host : build_string ("-")), | |
4164 | build_string ("\n"))); | |
e690ca94 KS |
4165 | } |
4166 | ||
d0d6b7c5 JB |
4167 | /* This variable is different from waiting_for_input in keyboard.c. |
4168 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4169 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4170 | for user-input when that process-filter was called. |
4171 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4172 | lisp code is being evalled. |
4173 | This is also used in record_asynch_buffer_change. | |
4174 | For that purpose, this must be 0 | |
214d6069 | 4175 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4176 | static int waiting_for_user_input_p; |
4177 | ||
2beb96f9 | 4178 | static Lisp_Object |
d3da34e0 | 4179 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4180 | { |
4181 | waiting_for_user_input_p = XINT (data); | |
4182 | return Qnil; | |
4183 | } | |
4184 | ||
c573ae8e | 4185 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4186 | static void |
d3da34e0 | 4187 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4188 | { |
4189 | } | |
4190 | ||
d0d6b7c5 JB |
4191 | /* Read and dispose of subprocess output while waiting for timeout to |
4192 | elapse and/or keyboard input to be available. | |
4193 | ||
de6fd4b9 | 4194 | TIME_LIMIT is: |
d35af63c PE |
4195 | timeout in seconds |
4196 | If negative, gobble data immediately available but don't wait for any. | |
d0d6b7c5 | 4197 | |
d35af63c PE |
4198 | NSECS is: |
4199 | an additional duration to wait, measured in nanoseconds | |
4200 | If TIME_LIMIT is zero, then: | |
4201 | If NSECS == 0, there is no limit. | |
d188e26b | 4202 | If NSECS > 0, the timeout consists of NSECS only. |
d35af63c | 4203 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
6e4f3667 | 4204 | |
a0bee46f | 4205 | READ_KBD is: |
d0d6b7c5 JB |
4206 | 0 to ignore keyboard input, or |
4207 | 1 to return when input is available, or | |
84aa3ace | 4208 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4209 | the quit handler, or |
d0d6b7c5 | 4210 | |
9fa1de30 | 4211 | DO_DISPLAY means redisplay should be done to show subprocess |
107ed38d | 4212 | output that arrives. |
d0d6b7c5 | 4213 | |
b89a415a KS |
4214 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4215 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4216 | |
b89a415a | 4217 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4218 | process. The return value is true if we read some input from |
b89a415a KS |
4219 | that process. |
4220 | ||
0bce5d9e | 4221 | If JUST_WAIT_PROC is nonzero, handle only output from WAIT_PROC |
b89a415a KS |
4222 | (suspending output from other processes). A negative value |
4223 | means don't run any timers either. | |
4224 | ||
e0f24100 | 4225 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4226 | received input from that process before the timeout elapsed. |
e0f24100 | 4227 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4228 | |
0bce5d9e | 4229 | bool |
d35af63c | 4230 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
9fa1de30 | 4231 | bool do_display, |
d5a3eaaf AS |
4232 | Lisp_Object wait_for_cell, |
4233 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4234 | { |
0bce5d9e | 4235 | int channel, nfds; |
855448dc | 4236 | SELECT_TYPE Available; |
3fad2ad2 | 4237 | SELECT_TYPE Writeok; |
0bce5d9e PE |
4238 | bool check_write; |
4239 | int check_delay; | |
4240 | bool no_avail; | |
d0d6b7c5 JB |
4241 | int xerrno; |
4242 | Lisp_Object proc; | |
41d03b9a | 4243 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4244 | int wait_channel = -1; |
0bce5d9e | 4245 | bool got_some_input = 0; |
d311d28c | 4246 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4247 | |
4248 | FD_ZERO (&Available); | |
3fad2ad2 | 4249 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4250 | |
d35af63c | 4251 | if (time_limit == 0 && nsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
4d2b044c DA |
4252 | && !(CONSP (wait_proc->status) |
4253 | && EQ (XCAR (wait_proc->status), Qexit))) | |
2f73da9c | 4254 | message1 ("Blocking call to accept-process-output with quit inhibited!!"); |
2b0a91e7 | 4255 | |
b89a415a KS |
4256 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4257 | if (wait_proc != NULL) | |
60f0fb11 | 4258 | wait_channel = wait_proc->infd; |
84aa3ace | 4259 | |
2beb96f9 KS |
4260 | record_unwind_protect (wait_reading_process_output_unwind, |
4261 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4262 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 | 4263 | |
d35af63c PE |
4264 | if (time_limit < 0) |
4265 | { | |
4266 | time_limit = 0; | |
4267 | nsecs = -1; | |
4268 | } | |
7216e43b | 4269 | else if (TYPE_MAXIMUM (time_t) < time_limit) |
d35af63c PE |
4270 | time_limit = TYPE_MAXIMUM (time_t); |
4271 | ||
d0d6b7c5 JB |
4272 | /* Since we may need to wait several times, |
4273 | compute the absolute time to return at. */ | |
908589fd | 4274 | if (time_limit || nsecs > 0) |
d0d6b7c5 | 4275 | { |
e9a9ae03 PE |
4276 | timeout = make_emacs_time (time_limit, nsecs); |
4277 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
d0d6b7c5 JB |
4278 | } |
4279 | ||
d0d6b7c5 JB |
4280 | while (1) |
4281 | { | |
0bce5d9e | 4282 | bool timeout_reduced_for_timers = 0; |
209c6a58 | 4283 | |
d0d6b7c5 JB |
4284 | /* If calling from keyboard input, do not quit |
4285 | since we want to return C-g as an input character. | |
4286 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4287 | if (read_kbd >= 0) |
d0d6b7c5 | 4288 | QUIT; |
4d7e6e51 | 4289 | else if (pending_signals) |
c3eff1b0 | 4290 | process_pending_signals (); |
d0d6b7c5 | 4291 | |
889255b4 | 4292 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4293 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4294 | break; |
4295 | ||
1aa8d505 SM |
4296 | /* Compute time from now till when time limit is up. */ |
4297 | /* Exit if already run out. */ | |
d35af63c | 4298 | if (nsecs < 0) |
d0d6b7c5 | 4299 | { |
216ee680 | 4300 | /* A negative timeout means |
d0d6b7c5 JB |
4301 | gobble output available now |
4302 | but don't wait at all. */ | |
4303 | ||
e9a9ae03 | 4304 | timeout = make_emacs_time (0, 0); |
d0d6b7c5 | 4305 | } |
908589fd | 4306 | else if (time_limit || nsecs > 0) |
d0d6b7c5 | 4307 | { |
e9a9ae03 PE |
4308 | EMACS_TIME now = current_emacs_time (); |
4309 | if (EMACS_TIME_LE (end_time, now)) | |
d0d6b7c5 | 4310 | break; |
e9a9ae03 | 4311 | timeout = sub_emacs_time (end_time, now); |
d0d6b7c5 JB |
4312 | } |
4313 | else | |
4314 | { | |
e9a9ae03 | 4315 | timeout = make_emacs_time (100000, 0); |
d0d6b7c5 JB |
4316 | } |
4317 | ||
f854a00b RS |
4318 | /* Normally we run timers here. |
4319 | But not if wait_for_cell; in those cases, | |
4320 | the wait is supposed to be short, | |
4321 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4322 | if (NILP (wait_for_cell) |
b89a415a | 4323 | && just_wait_proc >= 0) |
fb4c3627 | 4324 | { |
c0239a0b | 4325 | EMACS_TIME timer_delay; |
c573ae8e | 4326 | |
9baacf76 | 4327 | do |
c573ae8e | 4328 | { |
9fa1de30 | 4329 | unsigned old_timers_run = timers_run; |
c88164fe | 4330 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4331 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4332 | |
f868cd8a | 4333 | timer_delay = timer_check (); |
a2fab450 GM |
4334 | |
4335 | /* If a timer has run, this might have changed buffers | |
4336 | an alike. Make read_key_sequence aware of that. */ | |
4337 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4338 | && (old_buffer != current_buffer |
4339 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4340 | && waiting_for_user_input_p == -1) |
4341 | record_asynch_buffer_change (); | |
177c0ea7 | 4342 | |
9baacf76 GM |
4343 | if (timers_run != old_timers_run && do_display) |
4344 | /* We must retry, since a timer may have requeued itself | |
4345 | and that could alter the time_delay. */ | |
3007ebfb | 4346 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4347 | else |
4348 | break; | |
c573ae8e | 4349 | } |
9baacf76 | 4350 | while (!detect_input_pending ()); |
c573ae8e | 4351 | |
69645afc | 4352 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4353 | if (read_kbd != 0 |
69645afc RS |
4354 | && requeued_events_pending_p ()) |
4355 | break; | |
4356 | ||
216ee680 | 4357 | /* A negative timeout means do not wait at all. */ |
908589fd | 4358 | if (nsecs >= 0) |
fb4c3627 | 4359 | { |
d35af63c | 4360 | if (EMACS_TIME_VALID_P (timer_delay)) |
c0239a0b | 4361 | { |
d35af63c | 4362 | if (EMACS_TIME_LT (timer_delay, timeout)) |
209c6a58 CY |
4363 | { |
4364 | timeout = timer_delay; | |
4365 | timeout_reduced_for_timers = 1; | |
4366 | } | |
d35af63c PE |
4367 | } |
4368 | else | |
4369 | { | |
4370 | /* This is so a breakpoint can be put here. */ | |
4371 | wait_reading_process_output_1 (); | |
c0239a0b | 4372 | } |
c573ae8e | 4373 | } |
fb4c3627 RS |
4374 | } |
4375 | ||
90ab1a81 JB |
4376 | /* Cause C-g and alarm signals to take immediate action, |
4377 | and cause input available signals to zero out timeout. | |
4378 | ||
4379 | It is important that we do this before checking for process | |
4380 | activity. If we get a SIGCHLD after the explicit checks for | |
4381 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4382 | if (read_kbd < 0) |
90ab1a81 JB |
4383 | set_waiting_for_input (&timeout); |
4384 | ||
6be429b1 JB |
4385 | /* If status of something has changed, and no input is |
4386 | available, notify the user of the change right away. After | |
4387 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4388 | timeout to get our attention. */ |
4389 | if (update_tick != process_tick) | |
6be429b1 | 4390 | { |
bad49fc7 | 4391 | SELECT_TYPE Atemp; |
bad49fc7 | 4392 | SELECT_TYPE Ctemp; |
dd2a17ab | 4393 | |
cb768704 J |
4394 | if (kbd_on_hold_p ()) |
4395 | FD_ZERO (&Atemp); | |
4396 | else | |
4397 | Atemp = input_wait_mask; | |
3fad2ad2 | 4398 | Ctemp = write_mask; |
bad49fc7 | 4399 | |
e9a9ae03 | 4400 | timeout = make_emacs_time (0, 0); |
d35af63c PE |
4401 | if ((pselect (max (max_process_desc, max_input_desc) + 1, |
4402 | &Atemp, | |
bad49fc7 | 4403 | #ifdef NON_BLOCKING_CONNECT |
d35af63c | 4404 | (num_pending_connects > 0 ? &Ctemp : NULL), |
bad49fc7 | 4405 | #else |
d35af63c | 4406 | NULL, |
bad49fc7 | 4407 | #endif |
d35af63c | 4408 | NULL, &timeout, NULL) |
ecd1f654 | 4409 | <= 0)) |
90ab1a81 JB |
4410 | { |
4411 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4412 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4413 | clear_waiting_for_input (); |
ff6daed3 | 4414 | status_notify (NULL); |
e42bdf01 | 4415 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4416 | } |
6be429b1 JB |
4417 | } |
4418 | ||
dd2a17ab | 4419 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4420 | read whatever data has already been received. */ |
6bfd98e7 | 4421 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4422 | update_status (wait_proc); |
6bfd98e7 | 4423 | if (wait_proc |
4d2b044c DA |
4424 | && ! EQ (wait_proc->status, Qrun) |
4425 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4426 | { |
f86852b4 | 4427 | bool read_some_bytes = 0; |
7ce63188 | 4428 | |
9aa2a7f4 | 4429 | clear_waiting_for_input (); |
7ce63188 RS |
4430 | XSETPROCESS (proc, wait_proc); |
4431 | ||
4432 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4433 | while (wait_proc->infd >= 0) |
215b45e9 | 4434 | { |
f86852b4 | 4435 | int nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4436 | |
4437 | if (nread == 0) | |
4438 | break; | |
4439 | ||
908589fd | 4440 | if (nread > 0) |
f86852b4 | 4441 | got_some_input = read_some_bytes = 1; |
22626a85 | 4442 | else if (nread == -1 && (errno == EIO || errno == EAGAIN)) |
63136da6 | 4443 | break; |
e1b37c34 GM |
4444 | #ifdef EWOULDBLOCK |
4445 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4446 | break; |
215b45e9 RS |
4447 | #endif |
4448 | } | |
f86852b4 | 4449 | if (read_some_bytes && do_display) |
3007ebfb | 4450 | redisplay_preserve_echo_area (10); |
7ce63188 | 4451 | |
9aa2a7f4 JB |
4452 | break; |
4453 | } | |
6be429b1 | 4454 | |
d0d6b7c5 JB |
4455 | /* Wait till there is something to do */ |
4456 | ||
b89a415a | 4457 | if (wait_proc && just_wait_proc) |
107ed38d | 4458 | { |
60f0fb11 | 4459 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4460 | break; |
60f0fb11 | 4461 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4462 | check_delay = 0; |
3fad2ad2 | 4463 | check_write = 0; |
107ed38d KS |
4464 | } |
4465 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4466 | { |
4467 | Available = non_process_wait_mask; | |
bad49fc7 | 4468 | check_delay = 0; |
3fad2ad2 | 4469 | check_write = 0; |
dd2a17ab | 4470 | } |
a69281ff | 4471 | else |
dd2a17ab | 4472 | { |
b89a415a | 4473 | if (! read_kbd) |
dd2a17ab KS |
4474 | Available = non_keyboard_wait_mask; |
4475 | else | |
4476 | Available = input_wait_mask; | |
3fad2ad2 | 4477 | Writeok = write_mask; |
82d6e50b J |
4478 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4479 | check_write = 0; | |
4480 | #else | |
3fad2ad2 | 4481 | check_write = 1; |
82d6e50b | 4482 | #endif |
6b61353c | 4483 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4484 | } |
d0d6b7c5 | 4485 | |
ff11dfa1 | 4486 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4487 | redisplay now, before we start to wait. There is a race |
4488 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4489 | and indicates that a frame is trashed, the select may block |
4490 | displaying a trashed screen. */ | |
5164ee8e | 4491 | if (frame_garbaged && do_display) |
7286affd RS |
4492 | { |
4493 | clear_waiting_for_input (); | |
3007ebfb | 4494 | redisplay_preserve_echo_area (11); |
b89a415a | 4495 | if (read_kbd < 0) |
7efe788e | 4496 | set_waiting_for_input (&timeout); |
7286affd | 4497 | } |
ffd56f97 | 4498 | |
029529ac CY |
4499 | /* Skip the `select' call if input is available and we're |
4500 | waiting for keyboard input or a cell change (which can be | |
4501 | triggered by processing X events). In the latter case, set | |
4502 | nfds to 1 to avoid breaking the loop. */ | |
dd2a17ab | 4503 | no_avail = 0; |
029529ac CY |
4504 | if ((read_kbd || !NILP (wait_for_cell)) |
4505 | && detect_input_pending ()) | |
0a65b032 | 4506 | { |
029529ac | 4507 | nfds = read_kbd ? 0 : 1; |
dd2a17ab | 4508 | no_avail = 1; |
0a65b032 | 4509 | } |
029529ac CY |
4510 | |
4511 | if (!no_avail) | |
dd2a17ab | 4512 | { |
6b61353c KH |
4513 | |
4514 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4515 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4516 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4517 | read_output_delay, and we are not reading output for a |
4518 | specific wait_channel. It is not executed if | |
4519 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4520 | if (process_output_skip && check_delay > 0) |
4521 | { | |
d35af63c PE |
4522 | int nsecs = EMACS_NSECS (timeout); |
4523 | if (EMACS_SECS (timeout) > 0 || nsecs > READ_OUTPUT_DELAY_MAX) | |
4524 | nsecs = READ_OUTPUT_DELAY_MAX; | |
6b61353c KH |
4525 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) |
4526 | { | |
4527 | proc = chan_process[channel]; | |
4528 | if (NILP (proc)) | |
4529 | continue; | |
db853b7a | 4530 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4531 | processes with non-zero read_output_skip. */ |
4532 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4533 | { |
4534 | check_delay--; | |
60f0fb11 | 4535 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4536 | continue; |
4537 | FD_CLR (channel, &Available); | |
60f0fb11 | 4538 | XPROCESS (proc)->read_output_skip = 0; |
d35af63c PE |
4539 | if (XPROCESS (proc)->read_output_delay < nsecs) |
4540 | nsecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4541 | } |
4542 | } | |
e9a9ae03 | 4543 | timeout = make_emacs_time (0, nsecs); |
6b61353c KH |
4544 | process_output_skip = 0; |
4545 | } | |
4546 | #endif | |
0fda9b75 | 4547 | |
b33f93ee JD |
4548 | #if defined (HAVE_NS) |
4549 | nfds = ns_select | |
4550 | #elif defined (HAVE_GLIB) | |
4551 | nfds = xg_select | |
edfda783 | 4552 | #else |
d35af63c | 4553 | nfds = pselect |
edfda783 | 4554 | #endif |
3fad2ad2 J |
4555 | (max (max_process_desc, max_input_desc) + 1, |
4556 | &Available, | |
4557 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
d35af63c | 4558 | NULL, &timeout, NULL); |
e061a11b TZ |
4559 | |
4560 | #ifdef HAVE_GNUTLS | |
4561 | /* GnuTLS buffers data internally. In lowat mode it leaves | |
4562 | some data in the TCP buffers so that select works, but | |
4563 | with custom pull/push functions we need to check if some | |
4564 | data is available in the buffers manually. */ | |
261b6fd4 LMI |
4565 | if (nfds == 0) |
4566 | { | |
4567 | if (! wait_proc) | |
4568 | { | |
4569 | /* We're not waiting on a specific process, so loop | |
16c1ad08 LMI |
4570 | through all the channels and check for data. |
4571 | This is a workaround needed for some versions of | |
4572 | the gnutls library -- 2.12.14 has been confirmed | |
4573 | to need it. See | |
4574 | http://comments.gmane.org/gmane.emacs.devel/145074 */ | |
261b6fd4 | 4575 | for (channel = 0; channel < MAXDESC; ++channel) |
5b76caa4 PE |
4576 | if (! NILP (chan_process[channel])) |
4577 | { | |
4578 | struct Lisp_Process *p = | |
4579 | XPROCESS (chan_process[channel]); | |
4580 | if (p && p->gnutls_p && p->infd | |
4581 | && ((emacs_gnutls_record_check_pending | |
4582 | (p->gnutls_state)) | |
4583 | > 0)) | |
4584 | { | |
4585 | nfds++; | |
4586 | FD_SET (p->infd, &Available); | |
4587 | } | |
4588 | } | |
261b6fd4 LMI |
4589 | } |
4590 | else | |
4591 | { | |
4592 | /* Check this specific channel. */ | |
5b76caa4 | 4593 | if (wait_proc->gnutls_p /* Check for valid process. */ |
261b6fd4 | 4594 | /* Do we have pending data? */ |
5b76caa4 PE |
4595 | && ((emacs_gnutls_record_check_pending |
4596 | (wait_proc->gnutls_state)) | |
4597 | > 0)) | |
261b6fd4 LMI |
4598 | { |
4599 | nfds = 1; | |
4600 | /* Set to Available. */ | |
4601 | FD_SET (wait_proc->infd, &Available); | |
4602 | } | |
4603 | } | |
4604 | } | |
e061a11b | 4605 | #endif |
dd2a17ab | 4606 | } |
6720a7fb | 4607 | |
d0d6b7c5 JB |
4608 | xerrno = errno; |
4609 | ||
4610 | /* Make C-g and alarm signals set flags again */ | |
4611 | clear_waiting_for_input (); | |
4612 | ||
4613 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4614 | do_pending_window_change (0); |
d0d6b7c5 | 4615 | |
209c6a58 CY |
4616 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
4617 | /* We waited the full specified time, so return now. */ | |
4618 | break; | |
d0d6b7c5 JB |
4619 | if (nfds < 0) |
4620 | { | |
4621 | if (xerrno == EINTR) | |
dd2a17ab | 4622 | no_avail = 1; |
d0d6b7c5 JB |
4623 | else if (xerrno == EBADF) |
4624 | { | |
4625 | #ifdef AIX | |
4626 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4627 | the child's closure of the pts gives the parent a SIGHUP, and | |
4628 | the ptc file descriptor is automatically closed, | |
4629 | yielding EBADF here or at select() call above. | |
4630 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4631 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d983a10b | 4632 | Cleanup occurs c/o status_notify after SIGCHLD. */ |
dd2a17ab | 4633 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 | 4634 | #else |
1088b922 | 4635 | emacs_abort (); |
d0d6b7c5 JB |
4636 | #endif |
4637 | } | |
4638 | else | |
68c45bf0 | 4639 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4640 | } |
dd2a17ab KS |
4641 | |
4642 | if (no_avail) | |
4643 | { | |
4644 | FD_ZERO (&Available); | |
3fad2ad2 | 4645 | check_write = 0; |
dd2a17ab KS |
4646 | } |
4647 | ||
d0d6b7c5 JB |
4648 | /* Check for keyboard input */ |
4649 | /* If there is any, return immediately | |
4650 | to give it higher priority than subprocesses */ | |
4651 | ||
b89a415a | 4652 | if (read_kbd != 0) |
6ed6233b | 4653 | { |
9fa1de30 | 4654 | unsigned old_timers_run = timers_run; |
c88164fe | 4655 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4656 | Lisp_Object old_window = selected_window; |
0bce5d9e | 4657 | bool leave = 0; |
177c0ea7 | 4658 | |
5d6c2aa3 | 4659 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4660 | { |
4661 | swallow_events (do_display); | |
4662 | if (detect_input_pending_run_timers (do_display)) | |
4663 | leave = 1; | |
4664 | } | |
6ed6233b | 4665 | |
a2fab450 GM |
4666 | /* If a timer has run, this might have changed buffers |
4667 | an alike. Make read_key_sequence aware of that. */ | |
4668 | if (timers_run != old_timers_run | |
c88164fe | 4669 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4670 | && (old_buffer != current_buffer |
4671 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4672 | record_asynch_buffer_change (); |
4673 | ||
4674 | if (leave) | |
4675 | break; | |
177c0ea7 JB |
4676 | } |
4677 | ||
69645afc | 4678 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4679 | if (read_kbd != 0 |
69645afc RS |
4680 | && requeued_events_pending_p ()) |
4681 | break; | |
4682 | ||
77e1b3d4 RS |
4683 | /* If we are not checking for keyboard input now, |
4684 | do process events (but don't run any timers). | |
4685 | This is so that X events will be processed. | |
0c9960e9 | 4686 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4687 | That would causes delays in pasting selections, for example. |
4688 | ||
4689 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4690 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4691 | { |
4692 | swallow_events (do_display); | |
0c9960e9 | 4693 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4694 | if (detect_input_pending ()) |
4695 | break; | |
5d5beb62 | 4696 | #endif |
0c9960e9 | 4697 | } |
f854a00b | 4698 | |
84aa3ace | 4699 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4700 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4701 | break; |
4702 | ||
4a4bbad2 | 4703 | #ifdef USABLE_SIGIO |
5d5beb62 | 4704 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4705 | go read it. This can happen with X on BSD after logging out. |
4706 | In that case, there really is no input and no SIGIO, | |
4707 | but select says there is input. */ | |
4708 | ||
b89a415a | 4709 | if (read_kbd && interrupt_input |
2601f59e | 4710 | && keyboard_bit_set (&Available) && ! noninteractive) |
4d7e6e51 | 4711 | handle_input_available_signal (SIGIO); |
4746118a | 4712 | #endif |
d0d6b7c5 | 4713 | |
d0d6b7c5 JB |
4714 | if (! wait_proc) |
4715 | got_some_input |= nfds > 0; | |
4716 | ||
32676c08 JB |
4717 | /* If checking input just got us a size-change event from X, |
4718 | obey it now if we should. */ | |
b89a415a | 4719 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4720 | do_pending_window_change (0); |
32676c08 | 4721 | |
a9f2c884 | 4722 | /* Check for data from a process. */ |
dd2a17ab KS |
4723 | if (no_avail || nfds == 0) |
4724 | continue; | |
4725 | ||
3fad2ad2 J |
4726 | for (channel = 0; channel <= max_input_desc; ++channel) |
4727 | { | |
4728 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
de1339b0 PE |
4729 | if (d->func |
4730 | && ((d->condition & FOR_READ | |
4731 | && FD_ISSET (channel, &Available)) | |
4732 | || (d->condition & FOR_WRITE | |
4733 | && FD_ISSET (channel, &write_mask)))) | |
4734 | d->func (channel, d->data); | |
4735 | } | |
3fad2ad2 | 4736 | |
a69281ff | 4737 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4738 | { |
a69281ff | 4739 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4740 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4741 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4742 | { |
4743 | int nread; | |
4744 | ||
4745 | /* If waiting for this channel, arrange to return as | |
4746 | soon as no more input to be processed. No more | |
4747 | waiting. */ | |
4748 | if (wait_channel == channel) | |
4749 | { | |
a9f2c884 | 4750 | wait_channel = -1; |
d35af63c | 4751 | nsecs = -1; |
d0d6b7c5 JB |
4752 | got_some_input = 1; |
4753 | } | |
4754 | proc = chan_process[channel]; | |
4755 | if (NILP (proc)) | |
4756 | continue; | |
4757 | ||
e690ca94 | 4758 | /* If this is a server stream socket, accept connection. */ |
4d2b044c | 4759 | if (EQ (XPROCESS (proc)->status, Qlisten)) |
e690ca94 KS |
4760 | { |
4761 | server_accept_connection (proc, channel); | |
4762 | continue; | |
4763 | } | |
4764 | ||
d0d6b7c5 JB |
4765 | /* Read data from the process, starting with our |
4766 | buffered-ahead character if we have one. */ | |
4767 | ||
4768 | nread = read_process_output (proc, channel); | |
4769 | if (nread > 0) | |
4770 | { | |
4771 | /* Since read_process_output can run a filter, | |
4772 | which can call accept-process-output, | |
4773 | don't try to read from any other processes | |
4774 | before doing the select again. */ | |
4775 | FD_ZERO (&Available); | |
4776 | ||
4777 | if (do_display) | |
3007ebfb | 4778 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4779 | } |
4780 | #ifdef EWOULDBLOCK | |
4781 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4782 | ; | |
0b75e9a4 | 4783 | #endif |
d0d6b7c5 JB |
4784 | else if (nread == -1 && errno == EAGAIN) |
4785 | ; | |
49cdacda PE |
4786 | #ifdef WINDOWSNT |
4787 | /* FIXME: Is this special case still needed? */ | |
d0d6b7c5 JB |
4788 | /* Note that we cannot distinguish between no input |
4789 | available now and a closed pipe. | |
4790 | With luck, a closed pipe will be accompanied by | |
4791 | subprocess termination and SIGCHLD. */ | |
d888760c | 4792 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4793 | ; |
49cdacda | 4794 | #endif |
d0d6b7c5 JB |
4795 | #ifdef HAVE_PTYS |
4796 | /* On some OSs with ptys, when the process on one end of | |
4797 | a pty exits, the other end gets an error reading with | |
4798 | errno = EIO instead of getting an EOF (0 bytes read). | |
4799 | Therefore, if we get an error reading and errno = | |
4800 | EIO, just continue, because the child process has | |
4801 | exited and should clean itself up soon (e.g. when we | |
207a7ef0 | 4802 | get a SIGCHLD). */ |
d0d6b7c5 | 4803 | else if (nread == -1 && errno == EIO) |
4740825c | 4804 | { |
f30d612a CY |
4805 | struct Lisp_Process *p = XPROCESS (proc); |
4806 | ||
4807 | /* Clear the descriptor now, so we only raise the | |
4808 | signal once. */ | |
4809 | FD_CLR (channel, &input_wait_mask); | |
4810 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4811 | ||
4812 | if (p->pid == -2) | |
4813 | { | |
20ef56db PE |
4814 | /* If the EIO occurs on a pty, the SIGCHLD handler's |
4815 | waitpid call will not find the process object to | |
f30d612a CY |
4816 | delete. Do it here. */ |
4817 | p->tick = ++process_tick; | |
6a09a33b | 4818 | pset_status (p, Qfailed); |
f30d612a | 4819 | } |
4740825c KS |
4820 | } |
4821 | #endif /* HAVE_PTYS */ | |
5063c0e1 TN |
4822 | /* If we can detect process termination, don't consider the |
4823 | process gone just because its pipe is closed. */ | |
d888760c | 4824 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4825 | ; |
d0d6b7c5 JB |
4826 | else |
4827 | { | |
4828 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4829 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4830 | deactivate_process (proc); |
6bfd98e7 | 4831 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 | 4832 | update_status (XPROCESS (proc)); |
4d2b044c | 4833 | if (EQ (XPROCESS (proc)->status, Qrun)) |
6a09a33b PE |
4834 | pset_status (XPROCESS (proc), |
4835 | list2 (Qexit, make_number (256))); | |
d0d6b7c5 JB |
4836 | } |
4837 | } | |
177c0ea7 | 4838 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 4839 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 4840 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
4841 | { |
4842 | struct Lisp_Process *p; | |
dd2a17ab KS |
4843 | |
4844 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 4845 | FD_CLR (channel, &write_mask); |
dd2a17ab | 4846 | if (--num_pending_connects < 0) |
1088b922 | 4847 | emacs_abort (); |
dd2a17ab KS |
4848 | |
4849 | proc = chan_process[channel]; | |
4850 | if (NILP (proc)) | |
4851 | continue; | |
4852 | ||
4853 | p = XPROCESS (proc); | |
4854 | ||
4855 | #ifdef GNU_LINUX | |
4856 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 4857 | So only use it on systems where it is known to work. */ |
dd2a17ab | 4858 | { |
401bf9b4 | 4859 | socklen_t xlen = sizeof (xerrno); |
ed3751c8 | 4860 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
dd2a17ab KS |
4861 | xerrno = errno; |
4862 | } | |
4863 | #else | |
44c887be PJ |
4864 | { |
4865 | struct sockaddr pname; | |
ed3751c8 | 4866 | int pnamelen = sizeof (pname); |
44c887be PJ |
4867 | |
4868 | /* If connection failed, getpeername will fail. */ | |
4869 | xerrno = 0; | |
ed3751c8 | 4870 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
4871 | { |
4872 | /* Obtain connect failure code through error slippage. */ | |
4873 | char dummy; | |
dd2a17ab | 4874 | xerrno = errno; |
ed3751c8 | 4875 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
4876 | xerrno = errno; |
4877 | } | |
4878 | } | |
dd2a17ab KS |
4879 | #endif |
4880 | if (xerrno) | |
4881 | { | |
60f0fb11 | 4882 | p->tick = ++process_tick; |
6a09a33b | 4883 | pset_status (p, list2 (Qfailed, make_number (xerrno))); |
dd2a17ab KS |
4884 | deactivate_process (proc); |
4885 | } | |
4886 | else | |
4887 | { | |
6a09a33b | 4888 | pset_status (p, Qrun); |
dd2a17ab KS |
4889 | /* Execute the sentinel here. If we had relied on |
4890 | status_notify to do it later, it will read input | |
4891 | from the process before calling the sentinel. */ | |
4892 | exec_sentinel (proc, build_string ("open\n")); | |
4d2b044c | 4893 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 4894 | { |
60f0fb11 SM |
4895 | FD_SET (p->infd, &input_wait_mask); |
4896 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
4897 | } |
4898 | } | |
4899 | } | |
4900 | #endif /* NON_BLOCKING_CONNECT */ | |
1aa8d505 SM |
4901 | } /* End for each file descriptor. */ |
4902 | } /* End while exit conditions not met. */ | |
d0d6b7c5 | 4903 | |
2beb96f9 | 4904 | unbind_to (count, Qnil); |
d430ee71 | 4905 | |
ffd56f97 JB |
4906 | /* If calling from keyboard input, do not quit |
4907 | since we want to return C-g as an input character. | |
4908 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4909 | if (read_kbd >= 0) |
ffd56f97 JB |
4910 | { |
4911 | /* Prevent input_pending from remaining set if we quit. */ | |
4912 | clear_input_pending (); | |
4913 | QUIT; | |
4914 | } | |
efa2a55c | 4915 | |
d0d6b7c5 JB |
4916 | return got_some_input; |
4917 | } | |
4918 | \f | |
3b9a3dfa RS |
4919 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4920 | ||
4921 | static Lisp_Object | |
d3da34e0 | 4922 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 4923 | { |
70949dac | 4924 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4925 | } |
4926 | ||
4927 | static Lisp_Object | |
b93aacde | 4928 | read_process_output_error_handler (Lisp_Object error_val) |
3b9a3dfa | 4929 | { |
b93aacde | 4930 | cmd_error_internal (error_val, "error in process filter: "); |
3b9a3dfa RS |
4931 | Vinhibit_quit = Qt; |
4932 | update_echo_area (); | |
833ba342 | 4933 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4934 | return Qt; |
3b9a3dfa RS |
4935 | } |
4936 | ||
1aa8d505 SM |
4937 | static void |
4938 | read_and_dispose_of_process_output (struct Lisp_Process *p, char *chars, | |
4939 | ssize_t nbytes, | |
4940 | struct coding_system *coding); | |
4941 | ||
d0d6b7c5 JB |
4942 | /* Read pending output from the process channel, |
4943 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 4944 | Yield number of decoded characters read. |
d0d6b7c5 | 4945 | |
116c423c | 4946 | This function reads at most 4096 characters. |
d0d6b7c5 | 4947 | If you want to read all available subprocess output, |
0fa1789e KH |
4948 | you must call it repeatedly until it returns zero. |
4949 | ||
4950 | The characters read are decoded according to PROC's coding-system | |
4951 | for decoding. */ | |
d0d6b7c5 | 4952 | |
ff6daed3 | 4953 | static int |
d3da34e0 | 4954 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 4955 | { |
368f4090 | 4956 | register ssize_t nbytes; |
d0d6b7c5 | 4957 | char *chars; |
d0d6b7c5 | 4958 | register struct Lisp_Process *p = XPROCESS (proc); |
c7580538 | 4959 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 4960 | int carryover = p->decoding_carryover; |
116c423c | 4961 | int readmax = 4096; |
d311d28c | 4962 | ptrdiff_t count = SPECPDL_INDEX (); |
3a4fa2f2 | 4963 | Lisp_Object odeactivate; |
d0d6b7c5 | 4964 | |
38182d90 | 4965 | chars = alloca (carryover + readmax); |
e7fbaa65 KH |
4966 | if (carryover) |
4967 | /* See the comment above. */ | |
4d2b044c | 4968 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 4969 | |
e690ca94 KS |
4970 | #ifdef DATAGRAM_SOCKETS |
4971 | /* We have a working select, so proc_buffered_char is always -1. */ | |
4972 | if (DATAGRAM_CHAN_P (channel)) | |
4973 | { | |
401bf9b4 | 4974 | socklen_t len = datagram_address[channel].len; |
39b1da20 | 4975 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
4976 | 0, datagram_address[channel].sa, &len); |
4977 | } | |
4978 | else | |
4979 | #endif | |
6b61353c | 4980 | { |
908589fd | 4981 | bool buffered = proc_buffered_char[channel] >= 0; |
82eaa333 PE |
4982 | if (buffered) |
4983 | { | |
4984 | chars[carryover] = proc_buffered_char[channel]; | |
4985 | proc_buffered_char[channel] = -1; | |
4986 | } | |
8af55556 | 4987 | #ifdef HAVE_GNUTLS |
959ad23f AS |
4988 | if (p->gnutls_p) |
4989 | nbytes = emacs_gnutls_read (p, chars + carryover + buffered, | |
82eaa333 | 4990 | readmax - buffered); |
8af55556 TZ |
4991 | else |
4992 | #endif | |
82eaa333 PE |
4993 | nbytes = emacs_read (channel, chars + carryover + buffered, |
4994 | readmax - buffered); | |
6b61353c | 4995 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 4996 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 4997 | { |
60f0fb11 | 4998 | int delay = p->read_output_delay; |
6b61353c KH |
4999 | if (nbytes < 256) |
5000 | { | |
5001 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5002 | { | |
5003 | if (delay == 0) | |
5004 | process_output_delay_count++; | |
5005 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5006 | } | |
5007 | } | |
82eaa333 | 5008 | else if (delay > 0 && nbytes == readmax - buffered) |
6b61353c KH |
5009 | { |
5010 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5011 | if (delay == 0) | |
5012 | process_output_delay_count--; | |
5013 | } | |
60f0fb11 | 5014 | p->read_output_delay = delay; |
6b61353c KH |
5015 | if (delay) |
5016 | { | |
60f0fb11 | 5017 | p->read_output_skip = 1; |
6b61353c KH |
5018 | process_output_skip = 1; |
5019 | } | |
5020 | } | |
5021 | #endif | |
fe07cdfa PE |
5022 | nbytes += buffered; |
5023 | nbytes += buffered && nbytes <= 0; | |
d0d6b7c5 | 5024 | } |
d0d6b7c5 | 5025 | |
60f0fb11 | 5026 | p->decoding_carryover = 0; |
ca65341e | 5027 | |
ed7a4b2d | 5028 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5029 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5030 | if (nbytes <= 0) |
5031 | { | |
5032 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5033 | return nbytes; | |
5034 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5035 | } | |
d0d6b7c5 | 5036 | |
1d2fc612 | 5037 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5038 | nbytes += carryover; |
0fa1789e | 5039 | |
3a4fa2f2 SM |
5040 | odeactivate = Vdeactivate_mark; |
5041 | /* There's no good reason to let process filters change the current | |
5042 | buffer, and many callers of accept-process-output, sit-for, and | |
5043 | friends don't expect current-buffer to be changed from under them. */ | |
66322887 | 5044 | record_unwind_current_buffer (); |
3a4fa2f2 | 5045 | |
1aa8d505 SM |
5046 | read_and_dispose_of_process_output (p, chars, nbytes, coding); |
5047 | ||
5048 | /* Handling the process output should not deactivate the mark. */ | |
5049 | Vdeactivate_mark = odeactivate; | |
5050 | ||
5051 | unbind_to (count, Qnil); | |
5052 | return nbytes; | |
5053 | } | |
5054 | ||
5055 | static void | |
5056 | read_and_dispose_of_process_output (struct Lisp_Process *p, char *chars, | |
5057 | ssize_t nbytes, | |
5058 | struct coding_system *coding) | |
5059 | { | |
5060 | Lisp_Object outstream = p->filter; | |
5061 | Lisp_Object text; | |
5062 | bool outer_running_asynch_code = running_asynch_code; | |
5063 | int waiting = waiting_for_user_input_p; | |
30c78175 | 5064 | |
1aa8d505 SM |
5065 | /* No need to gcpro these, because all we do with them later |
5066 | is test them for EQness, and none of them should be a string. */ | |
aba7731a | 5067 | #if 0 |
1aa8d505 SM |
5068 | Lisp_Object obuffer, okeymap; |
5069 | XSETBUFFER (obuffer, current_buffer); | |
5070 | okeymap = BVAR (current_buffer, keymap); | |
aba7731a | 5071 | #endif |
30c78175 | 5072 | |
1aa8d505 SM |
5073 | /* We inhibit quit here instead of just catching it so that |
5074 | hitting ^G when a filter happens to be running won't screw | |
5075 | it up. */ | |
5076 | specbind (Qinhibit_quit, Qt); | |
5077 | specbind (Qlast_nonmenu_event, Qt); | |
4da2f5be | 5078 | |
1aa8d505 SM |
5079 | /* In case we get recursively called, |
5080 | and we already saved the match data nonrecursively, | |
5081 | save the same match data in safely recursive fashion. */ | |
5082 | if (outer_running_asynch_code) | |
5083 | { | |
5084 | Lisp_Object tem; | |
5085 | /* Don't clobber the CURRENT match data, either! */ | |
5086 | tem = Fmatch_data (Qnil, Qnil, Qnil); | |
5087 | restore_search_regs (); | |
5088 | record_unwind_save_match_data (); | |
5089 | Fset_match_data (tem, Qt); | |
5090 | } | |
4da2f5be | 5091 | |
1aa8d505 SM |
5092 | /* For speed, if a search happens within this code, |
5093 | save the match data in a special nonrecursive fashion. */ | |
5094 | running_asynch_code = 1; | |
ed7a4b2d | 5095 | |
1aa8d505 SM |
5096 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5097 | text = coding->dst_object; | |
5098 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
5099 | /* A new coding system might be found. */ | |
5100 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) | |
5101 | { | |
5102 | pset_decode_coding_system (p, Vlast_coding_system_used); | |
ed7a4b2d | 5103 | |
1aa8d505 SM |
5104 | /* Don't call setup_coding_system for |
5105 | proc_decode_coding_system[channel] here. It is done in | |
5106 | detect_coding called via decode_coding above. */ | |
ed7a4b2d | 5107 | |
1aa8d505 SM |
5108 | /* If a coding system for encoding is not yet decided, we set |
5109 | it as the same as coding-system for decoding. | |
51c6067d | 5110 | |
1aa8d505 SM |
5111 | But, before doing that we must check if |
5112 | proc_encode_coding_system[p->outfd] surely points to a | |
5113 | valid memory because p->outfd will be changed once EOF is | |
5114 | sent to the process. */ | |
5115 | if (NILP (p->encode_coding_system) | |
5116 | && proc_encode_coding_system[p->outfd]) | |
dd8c7a53 | 5117 | { |
1aa8d505 SM |
5118 | pset_encode_coding_system |
5119 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
5120 | setup_coding_system (p->encode_coding_system, | |
5121 | proc_encode_coding_system[p->outfd]); | |
dd8c7a53 | 5122 | } |
1aa8d505 | 5123 | } |
d0d6b7c5 | 5124 | |
1aa8d505 SM |
5125 | if (coding->carryover_bytes > 0) |
5126 | { | |
5127 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) | |
5128 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); | |
5129 | memcpy (SDATA (p->decoding_buf), coding->carryover, | |
5130 | coding->carryover_bytes); | |
5131 | p->decoding_carryover = coding->carryover_bytes; | |
5132 | } | |
5133 | if (SBYTES (text) > 0) | |
5134 | /* FIXME: It's wrong to wrap or not based on debug-on-error, and | |
5135 | sometimes it's simply wrong to wrap (e.g. when called from | |
5136 | accept-process-output). */ | |
5137 | internal_condition_case_1 (read_process_output_call, | |
5138 | Fcons (outstream, | |
5139 | Fcons (make_lisp_proc (p), | |
5140 | Fcons (text, Qnil))), | |
5141 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5142 | read_process_output_error_handler); | |
5143 | ||
5144 | /* If we saved the match data nonrecursively, restore it now. */ | |
5145 | restore_search_regs (); | |
5146 | running_asynch_code = outer_running_asynch_code; | |
5147 | ||
5148 | /* Restore waiting_for_user_input_p as it was | |
5149 | when we were called, in case the filter clobbered it. */ | |
5150 | waiting_for_user_input_p = waiting; | |
bbce7d72 | 5151 | |
7973cfa8 RS |
5152 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5153 | because we might have changed minor modes or other things | |
5154 | that affect key bindings. */ | |
1aa8d505 SM |
5155 | if (! EQ (Fcurrent_buffer (), obuffer) |
5156 | || ! EQ (current_buffer->keymap, okeymap)) | |
5157 | #endif | |
5158 | /* But do it only if the caller is actually going to read events. | |
5159 | Otherwise there's no need to make him wake up, and it could | |
5160 | cause trouble (for example it would make sit_for return). */ | |
5161 | if (waiting_for_user_input_p == -1) | |
5162 | record_asynch_buffer_change (); | |
5163 | } | |
5164 | ||
5165 | DEFUN ("internal-default-process-filter", Finternal_default_process_filter, | |
5166 | Sinternal_default_process_filter, 2, 2, 0, | |
5167 | doc: /* Function used as default process filter. */) | |
5168 | (Lisp_Object proc, Lisp_Object text) | |
5169 | { | |
5170 | struct Lisp_Process *p; | |
5171 | ptrdiff_t opoint; | |
d0d6b7c5 | 5172 | |
1aa8d505 SM |
5173 | CHECK_PROCESS (proc); |
5174 | p = XPROCESS (proc); | |
5175 | CHECK_STRING (text); | |
5176 | ||
5177 | if (!NILP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer))) | |
d0d6b7c5 | 5178 | { |
b0310da4 | 5179 | Lisp_Object old_read_only; |
d311d28c PE |
5180 | ptrdiff_t old_begv, old_zv; |
5181 | ptrdiff_t old_begv_byte, old_zv_byte; | |
5182 | ptrdiff_t before, before_byte; | |
5183 | ptrdiff_t opoint_byte; | |
926b7e5e | 5184 | struct buffer *b; |
30c78175 | 5185 | |
4d2b044c | 5186 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5187 | opoint = PT; |
d8a2934e | 5188 | opoint_byte = PT_BYTE; |
4b4deea2 | 5189 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5190 | old_begv = BEGV; |
5191 | old_zv = ZV; | |
d8a2934e RS |
5192 | old_begv_byte = BEGV_BYTE; |
5193 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5194 | |
39eb03f1 | 5195 | bset_read_only (current_buffer, Qnil); |
d0d6b7c5 JB |
5196 | |
5197 | /* Insert new output into buffer | |
5198 | at the current end-of-output marker, | |
5199 | thus preserving logical ordering of input and output. */ | |
4d2b044c | 5200 | if (XMARKER (p->mark)->buffer) |
3193acd2 | 5201 | SET_PT_BOTH (clip_to_bounds (BEGV, |
4d2b044c | 5202 | marker_position (p->mark), ZV), |
3193acd2 | 5203 | clip_to_bounds (BEGV_BYTE, |
4d2b044c | 5204 | marker_byte_position (p->mark), |
d8a2934e | 5205 | ZV_BYTE)); |
d0d6b7c5 | 5206 | else |
d8a2934e | 5207 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5208 | before = PT; |
d8a2934e | 5209 | before_byte = PT_BYTE; |
b0310da4 JB |
5210 | |
5211 | /* If the output marker is outside of the visible region, save | |
5212 | the restriction and widen. */ | |
6ec8bbd2 | 5213 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5214 | Fwiden (); |
5215 | ||
d69864bf | 5216 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5217 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5218 | != ! STRING_MULTIBYTE (text)) |
5219 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5220 | ? Fstring_as_unibyte (text) |
03f04413 | 5221 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5222 | /* Insert before markers in case we are inserting where |
5223 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5224 | insert_from_string_before_markers (text, 0, 0, |
5225 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5226 | |
926b7e5e GM |
5227 | /* Make sure the process marker's position is valid when the |
5228 | process buffer is changed in the signal_after_change above. | |
5229 | W3 is known to do that. */ | |
4d2b044c DA |
5230 | if (BUFFERP (p->buffer) |
5231 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5232 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
926b7e5e | 5233 | else |
4d2b044c | 5234 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
b0310da4 | 5235 | |
d0d6b7c5 JB |
5236 | update_mode_lines++; |
5237 | ||
12ca5cdf RS |
5238 | /* Make sure opoint and the old restrictions |
5239 | float ahead of any new text just as point would. */ | |
5240 | if (opoint >= before) | |
d8a2934e RS |
5241 | { |
5242 | opoint += PT - before; | |
5243 | opoint_byte += PT_BYTE - before_byte; | |
5244 | } | |
12ca5cdf | 5245 | if (old_begv > before) |
d8a2934e RS |
5246 | { |
5247 | old_begv += PT - before; | |
5248 | old_begv_byte += PT_BYTE - before_byte; | |
5249 | } | |
12ca5cdf | 5250 | if (old_zv >= before) |
d8a2934e RS |
5251 | { |
5252 | old_zv += PT - before; | |
5253 | old_zv_byte += PT_BYTE - before_byte; | |
5254 | } | |
12ca5cdf | 5255 | |
b0310da4 | 5256 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5257 | if (old_begv != BEGV || old_zv != ZV) |
5258 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5259 | |
39eb03f1 | 5260 | bset_read_only (current_buffer, old_read_only); |
d8a2934e | 5261 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5262 | } |
1aa8d505 | 5263 | return Qnil; |
d0d6b7c5 | 5264 | } |
d0d6b7c5 | 5265 | \f |
1aa8d505 | 5266 | /* Sending data to subprocess. */ |
d0d6b7c5 | 5267 | |
20ca2e94 TN |
5268 | /* In send_process, when a write fails temporarily, |
5269 | wait_reading_process_output is called. It may execute user code, | |
5270 | e.g. timers, that attempts to write new data to the same process. | |
5271 | We must ensure that data is sent in the right order, and not | |
5272 | interspersed half-completed with other writes (Bug#10815). This is | |
5273 | handled by the write_queue element of struct process. It is a list | |
5274 | with each entry having the form | |
5275 | ||
5276 | (string . (offset . length)) | |
5277 | ||
5278 | where STRING is a lisp string, OFFSET is the offset into the | |
5279 | string's byte sequence from which we should begin to send, and | |
5280 | LENGTH is the number of bytes left to send. */ | |
5281 | ||
5282 | /* Create a new entry in write_queue. | |
5283 | INPUT_OBJ should be a buffer, string Qt, or Qnil. | |
5284 | BUF is a pointer to the string sequence of the input_obj or a C | |
5285 | string in case of Qt or Qnil. */ | |
5286 | ||
5287 | static void | |
5288 | write_queue_push (struct Lisp_Process *p, Lisp_Object input_obj, | |
0bce5d9e | 5289 | const char *buf, ptrdiff_t len, bool front) |
20ca2e94 | 5290 | { |
7ea2b339 | 5291 | ptrdiff_t offset; |
20ca2e94 TN |
5292 | Lisp_Object entry, obj; |
5293 | ||
5294 | if (STRINGP (input_obj)) | |
5295 | { | |
5296 | offset = buf - SSDATA (input_obj); | |
5297 | obj = input_obj; | |
5298 | } | |
5299 | else | |
5300 | { | |
5301 | offset = 0; | |
5302 | obj = make_unibyte_string (buf, len); | |
5303 | } | |
5304 | ||
5305 | entry = Fcons (obj, Fcons (make_number (offset), make_number (len))); | |
5306 | ||
5307 | if (front) | |
6a09a33b | 5308 | pset_write_queue (p, Fcons (entry, p->write_queue)); |
20ca2e94 | 5309 | else |
6a09a33b | 5310 | pset_write_queue (p, nconc2 (p->write_queue, Fcons (entry, Qnil))); |
20ca2e94 TN |
5311 | } |
5312 | ||
5313 | /* Remove the first element in the write_queue of process P, put its | |
0bce5d9e PE |
5314 | contents in OBJ, BUF and LEN, and return true. If the |
5315 | write_queue is empty, return false. */ | |
20ca2e94 | 5316 | |
0bce5d9e | 5317 | static bool |
20ca2e94 | 5318 | write_queue_pop (struct Lisp_Process *p, Lisp_Object *obj, |
7ea2b339 | 5319 | const char **buf, ptrdiff_t *len) |
20ca2e94 TN |
5320 | { |
5321 | Lisp_Object entry, offset_length; | |
7ea2b339 | 5322 | ptrdiff_t offset; |
20ca2e94 | 5323 | |
4d2b044c | 5324 | if (NILP (p->write_queue)) |
20ca2e94 TN |
5325 | return 0; |
5326 | ||
4d2b044c | 5327 | entry = XCAR (p->write_queue); |
6a09a33b | 5328 | pset_write_queue (p, XCDR (p->write_queue)); |
20ca2e94 TN |
5329 | |
5330 | *obj = XCAR (entry); | |
5331 | offset_length = XCDR (entry); | |
5332 | ||
5333 | *len = XINT (XCDR (offset_length)); | |
5334 | offset = XINT (XCAR (offset_length)); | |
7ea2b339 | 5335 | *buf = SSDATA (*obj) + offset; |
20ca2e94 TN |
5336 | |
5337 | return 1; | |
5338 | } | |
5339 | ||
4556b700 RS |
5340 | /* Send some data to process PROC. |
5341 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5342 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5343 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5344 | |
a92e4183 KH |
5345 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5346 | for encoding before it is sent. | |
1fb0098c GM |
5347 | |
5348 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5349 | |
ff6daed3 | 5350 | static void |
4d7e6e51 PE |
5351 | send_process (Lisp_Object proc, const char *buf, ptrdiff_t len, |
5352 | Lisp_Object object) | |
d0d6b7c5 | 5353 | { |
6b61353c | 5354 | struct Lisp_Process *p = XPROCESS (proc); |
368f4090 | 5355 | ssize_t rv; |
0fa1789e | 5356 | struct coding_system *coding; |
6044e593 | 5357 | |
6bfd98e7 | 5358 | if (p->raw_status_new) |
6b61353c | 5359 | update_status (p); |
4d2b044c DA |
5360 | if (! EQ (p->status, Qrun)) |
5361 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5362 | if (p->outfd < 0) |
4d2b044c | 5363 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5364 | |
60f0fb11 | 5365 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5366 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5367 | |
ed7a4b2d KH |
5368 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5369 | || (BUFFERP (object) | |
4b4deea2 | 5370 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5371 | || EQ (object, Qt)) |
278bfdd6 | 5372 | { |
6a09a33b PE |
5373 | pset_encode_coding_system |
5374 | (p, complement_process_encoding_system (p->encode_coding_system)); | |
4d2b044c | 5375 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
fcaf8878 KH |
5376 | { |
5377 | /* The coding system for encoding was changed to raw-text | |
5378 | because we sent a unibyte text previously. Now we are | |
5379 | sending a multibyte text, thus we must encode it by the | |
5380 | original coding system specified for the current process. | |
5381 | ||
da6062e6 PE |
5382 | Another reason we come here is that the coding system |
5383 | was just complemented and a new one was returned by | |
fcaf8878 | 5384 | complement_process_encoding_system. */ |
4d2b044c DA |
5385 | setup_coding_system (p->encode_coding_system, coding); |
5386 | Vlast_coding_system_used = p->encode_coding_system; | |
fcaf8878 | 5387 | } |
e08bbb84 | 5388 | coding->src_multibyte = 1; |
278bfdd6 KH |
5389 | } |
5390 | else | |
5391 | { | |
a0241d01 | 5392 | coding->src_multibyte = 0; |
a92e4183 KH |
5393 | /* For sending a unibyte text, character code conversion should |
5394 | not take place but EOL conversion should. So, setup raw-text | |
5395 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5396 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5397 | { |
5398 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5399 | { | |
5400 | /* But, before changing the coding, we must flush out data. */ | |
5401 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5402 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5403 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5404 | } |
5bbf78c1 KH |
5405 | setup_coding_system (raw_text_coding_system |
5406 | (Vlast_coding_system_used), | |
5407 | coding); | |
e08bbb84 | 5408 | coding->src_multibyte = 0; |
a92e4183 | 5409 | } |
278bfdd6 | 5410 | } |
a4a37e65 KH |
5411 | coding->dst_multibyte = 0; |
5412 | ||
ed7a4b2d | 5413 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5414 | { |
5bbf78c1 | 5415 | coding->dst_object = Qt; |
ed7a4b2d | 5416 | if (BUFFERP (object)) |
0fa1789e | 5417 | { |
d311d28c PE |
5418 | ptrdiff_t from_byte, from, to; |
5419 | ptrdiff_t save_pt, save_pt_byte; | |
5bbf78c1 KH |
5420 | struct buffer *cur = current_buffer; |
5421 | ||
5422 | set_buffer_internal (XBUFFER (object)); | |
5423 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5424 | ||
400a67ff | 5425 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5426 | from = BYTE_TO_CHAR (from_byte); |
5427 | to = BYTE_TO_CHAR (from_byte + len); | |
5428 | TEMP_SET_PT_BOTH (from, from_byte); | |
5429 | encode_coding_object (coding, object, from, from_byte, | |
5430 | to, from_byte + len, Qt); | |
5431 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5432 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5433 | } |
5434 | else if (STRINGP (object)) | |
5435 | { | |
550c8289 KH |
5436 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5437 | SBYTES (object), Qt); | |
0fa1789e | 5438 | } |
5bbf78c1 | 5439 | else |
452294c2 | 5440 | { |
5bbf78c1 KH |
5441 | coding->dst_object = make_unibyte_string (buf, len); |
5442 | coding->produced = len; | |
452294c2 | 5443 | } |
ed7a4b2d | 5444 | |
e7fbaa65 | 5445 | len = coding->produced; |
347f3cd3 | 5446 | object = coding->dst_object; |
400a67ff | 5447 | buf = SSDATA (object); |
0fa1789e | 5448 | } |
d0d6b7c5 | 5449 | |
4d7e6e51 PE |
5450 | /* If there is already data in the write_queue, put the new data |
5451 | in the back of queue. Otherwise, ignore it. */ | |
5452 | if (!NILP (p->write_queue)) | |
5453 | write_queue_push (p, object, buf, len, 0); | |
20ca2e94 | 5454 | |
4d7e6e51 PE |
5455 | do /* while !NILP (p->write_queue) */ |
5456 | { | |
5457 | ptrdiff_t cur_len = -1; | |
5458 | const char *cur_buf; | |
5459 | Lisp_Object cur_object; | |
20ca2e94 | 5460 | |
4d7e6e51 PE |
5461 | /* If write_queue is empty, ignore it. */ |
5462 | if (!write_queue_pop (p, &cur_object, &cur_buf, &cur_len)) | |
0daad115 | 5463 | { |
4d7e6e51 PE |
5464 | cur_len = len; |
5465 | cur_buf = buf; | |
5466 | cur_object = object; | |
5467 | } | |
20ca2e94 | 5468 | |
4d7e6e51 PE |
5469 | while (cur_len > 0) |
5470 | { | |
5471 | /* Send this batch, using one or more write calls. */ | |
5472 | ptrdiff_t written = 0; | |
5473 | int outfd = p->outfd; | |
5474 | #ifdef DATAGRAM_SOCKETS | |
5475 | if (DATAGRAM_CHAN_P (outfd)) | |
20ca2e94 | 5476 | { |
4d7e6e51 PE |
5477 | rv = sendto (outfd, cur_buf, cur_len, |
5478 | 0, datagram_address[outfd].sa, | |
5479 | datagram_address[outfd].len); | |
908589fd | 5480 | if (rv >= 0) |
4d7e6e51 PE |
5481 | written = rv; |
5482 | else if (errno == EMSGSIZE) | |
5483 | report_file_error ("sending datagram", Fcons (proc, Qnil)); | |
20ca2e94 | 5484 | } |
4d7e6e51 | 5485 | else |
e690ca94 | 5486 | #endif |
4d7e6e51 | 5487 | { |
8af55556 | 5488 | #ifdef HAVE_GNUTLS |
4d7e6e51 PE |
5489 | if (p->gnutls_p) |
5490 | written = emacs_gnutls_write (p, cur_buf, cur_len); | |
5491 | else | |
8af55556 | 5492 | #endif |
4d7e6e51 PE |
5493 | written = emacs_write (outfd, cur_buf, cur_len); |
5494 | rv = (written ? 0 : -1); | |
6b61353c | 5495 | #ifdef ADAPTIVE_READ_BUFFERING |
4d7e6e51 PE |
5496 | if (p->read_output_delay > 0 |
5497 | && p->adaptive_read_buffering == 1) | |
5498 | { | |
5499 | p->read_output_delay = 0; | |
5500 | process_output_delay_count--; | |
5501 | p->read_output_skip = 0; | |
6b61353c | 5502 | } |
4d7e6e51 PE |
5503 | #endif |
5504 | } | |
4556b700 | 5505 | |
4d7e6e51 PE |
5506 | if (rv < 0) |
5507 | { | |
22626a85 | 5508 | if (errno == EAGAIN |
d0d6b7c5 | 5509 | #ifdef EWOULDBLOCK |
4d7e6e51 | 5510 | || errno == EWOULDBLOCK |
d0d6b7c5 | 5511 | #endif |
4d7e6e51 PE |
5512 | ) |
5513 | /* Buffer is full. Wait, accepting input; | |
5514 | that may allow the program | |
5515 | to finish doing output and read more. */ | |
5516 | { | |
3433b6bd | 5517 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
4d7e6e51 PE |
5518 | /* A gross hack to work around a bug in FreeBSD. |
5519 | In the following sequence, read(2) returns | |
5520 | bogus data: | |
5521 | ||
5522 | write(2) 1022 bytes | |
5523 | write(2) 954 bytes, get EAGAIN | |
5524 | read(2) 1024 bytes in process_read_output | |
5525 | read(2) 11 bytes in process_read_output | |
5526 | ||
5527 | That is, read(2) returns more bytes than have | |
5528 | ever been written successfully. The 1033 bytes | |
5529 | read are the 1022 bytes written successfully | |
5530 | after processing (for example with CRs added if | |
5531 | the terminal is set up that way which it is | |
5532 | here). The same bytes will be seen again in a | |
5533 | later read(2), without the CRs. */ | |
5534 | ||
5535 | if (errno == EAGAIN) | |
5536 | { | |
5537 | int flags = FWRITE; | |
5538 | ioctl (p->outfd, TIOCFLUSH, &flags); | |
5539 | } | |
3433b6bd | 5540 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5541 | |
4d7e6e51 PE |
5542 | /* Put what we should have written in wait_queue. */ |
5543 | write_queue_push (p, cur_object, cur_buf, cur_len, 1); | |
5544 | wait_reading_process_output (0, 20 * 1000 * 1000, | |
5545 | 0, 0, Qnil, NULL, 0); | |
5546 | /* Reread queue, to see what is left. */ | |
5547 | break; | |
0daad115 | 5548 | } |
4d7e6e51 PE |
5549 | else if (errno == EPIPE) |
5550 | { | |
5551 | p->raw_status_new = 0; | |
5552 | pset_status (p, list2 (Qexit, make_number (256))); | |
5553 | p->tick = ++process_tick; | |
5554 | deactivate_process (proc); | |
5555 | error ("process %s no longer connected to pipe; closed it", | |
5556 | SDATA (p->name)); | |
5557 | } | |
5558 | else | |
5559 | /* This is a real error. */ | |
5560 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
0daad115 | 5561 | } |
4d7e6e51 PE |
5562 | cur_buf += written; |
5563 | cur_len -= written; | |
0daad115 | 5564 | } |
d0d6b7c5 | 5565 | } |
4d7e6e51 | 5566 | while (!NILP (p->write_queue)); |
d0d6b7c5 JB |
5567 | } |
5568 | ||
5569 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5570 | 3, 3, 0, |
5571 | doc: /* Send current contents of region as input to PROCESS. | |
5572 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5573 | nil, indicating the current buffer's process. | |
5574 | Called from program, takes three arguments, PROCESS, START and END. | |
5575 | If the region is more than 500 characters long, | |
5576 | it is sent in several bunches. This may happen even for shorter regions. | |
5577 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5578 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 | 5579 | { |
13002885 DA |
5580 | Lisp_Object proc = get_process (process); |
5581 | ptrdiff_t start_byte, end_byte; | |
d0d6b7c5 | 5582 | |
d0d6b7c5 | 5583 | validate_region (&start, &end); |
1b234f64 | 5584 | |
13002885 DA |
5585 | start_byte = CHAR_TO_BYTE (XINT (start)); |
5586 | end_byte = CHAR_TO_BYTE (XINT (end)); | |
5587 | ||
1b234f64 | 5588 | if (XINT (start) < GPT && XINT (end) > GPT) |
13002885 | 5589 | move_gap_both (XINT (start), start_byte); |
1b234f64 | 5590 | |
e454145b | 5591 | send_process (proc, (char *) BYTE_POS_ADDR (start_byte), |
13002885 | 5592 | end_byte - start_byte, Fcurrent_buffer ()); |
1b234f64 | 5593 | |
d0d6b7c5 JB |
5594 | return Qnil; |
5595 | } | |
5596 | ||
5597 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5598 | 2, 2, 0, |
5599 | doc: /* Send PROCESS the contents of STRING as input. | |
5600 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5601 | nil, indicating the current buffer's process. | |
5602 | If STRING is more than 500 characters long, | |
5603 | it is sent in several bunches. This may happen even for shorter strings. | |
5604 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5605 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5606 | { |
5607 | Lisp_Object proc; | |
b7826503 | 5608 | CHECK_STRING (string); |
d0d6b7c5 | 5609 | proc = get_process (process); |
400a67ff | 5610 | send_process (proc, SSDATA (string), |
1b234f64 | 5611 | SBYTES (string), string); |
d0d6b7c5 JB |
5612 | return Qnil; |
5613 | } | |
5614 | \f | |
16782258 JD |
5615 | /* Return the foreground process group for the tty/pty that |
5616 | the process P uses. */ | |
dde14581 | 5617 | static pid_t |
d3da34e0 | 5618 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 | 5619 | { |
dde14581 | 5620 | pid_t gid = -1; |
16782258 | 5621 | |
f3d9532b | 5622 | #ifdef TIOCGPGRP |
4d2b044c | 5623 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5624 | { |
5625 | int fd; | |
5626 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5627 | master side. Try the slave side. */ | |
4d2b044c | 5628 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5629 | |
5630 | if (fd != -1) | |
5631 | { | |
5632 | ioctl (fd, TIOCGPGRP, &gid); | |
5633 | emacs_close (fd); | |
5634 | } | |
5635 | } | |
5636 | #endif /* defined (TIOCGPGRP ) */ | |
5637 | ||
5638 | return gid; | |
5639 | } | |
5640 | ||
b81ea5ef RS |
5641 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5642 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5643 | doc: /* Return t if PROCESS has given the terminal to a child. |
5644 | If the operating system does not make it possible to find out, | |
5645 | return t unconditionally. */) | |
5842a27b | 5646 | (Lisp_Object process) |
b81ea5ef RS |
5647 | { |
5648 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5649 | in a way that will cause returning t. */ | |
dde14581 | 5650 | pid_t gid; |
b81ea5ef RS |
5651 | Lisp_Object proc; |
5652 | struct Lisp_Process *p; | |
5653 | ||
5654 | proc = get_process (process); | |
5655 | p = XPROCESS (proc); | |
5656 | ||
4d2b044c | 5657 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5658 | error ("Process %s is not a subprocess", |
4d2b044c | 5659 | SDATA (p->name)); |
60f0fb11 | 5660 | if (p->infd < 0) |
b81ea5ef | 5661 | error ("Process %s is not active", |
4d2b044c | 5662 | SDATA (p->name)); |
b81ea5ef | 5663 | |
16782258 | 5664 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5665 | |
6bfd98e7 | 5666 | if (gid == p->pid) |
b81ea5ef RS |
5667 | return Qnil; |
5668 | return Qt; | |
5669 | } | |
5670 | \f | |
d0d6b7c5 | 5671 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5672 | If CURRENT_GROUP is t, that means send to the process group |
5673 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5674 | This is used for various commands in shell mode. |
b81ea5ef RS |
5675 | If CURRENT_GROUP is lambda, that means send to the process group |
5676 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5677 | ||
0bce5d9e | 5678 | If NOMSG is false, insert signal-announcements into process's buffers |
b0310da4 JB |
5679 | right away. |
5680 | ||
5681 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5682 | down the pty. This allows us to signal inferiors who have changed |
d983a10b | 5683 | their uid, for which kill would return an EPERM error. */ |
d0d6b7c5 | 5684 | |
f9738840 | 5685 | static void |
d3da34e0 | 5686 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
0bce5d9e | 5687 | bool nomsg) |
d0d6b7c5 JB |
5688 | { |
5689 | Lisp_Object proc; | |
0bce5d9e | 5690 | struct Lisp_Process *p; |
dde14581 | 5691 | pid_t gid; |
0bce5d9e | 5692 | bool no_pgrp = 0; |
d0d6b7c5 JB |
5693 | |
5694 | proc = get_process (process); | |
5695 | p = XPROCESS (proc); | |
5696 | ||
4d2b044c | 5697 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5698 | error ("Process %s is not a subprocess", |
4d2b044c | 5699 | SDATA (p->name)); |
60f0fb11 | 5700 | if (p->infd < 0) |
d0d6b7c5 | 5701 | error ("Process %s is not active", |
4d2b044c | 5702 | SDATA (p->name)); |
d0d6b7c5 | 5703 | |
60f0fb11 | 5704 | if (!p->pty_flag) |
d0d6b7c5 JB |
5705 | current_group = Qnil; |
5706 | ||
d0d6b7c5 | 5707 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5708 | if (NILP (current_group)) |
5709 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5710 | gid = p->pid; |
2af70a0c | 5711 | else |
d0d6b7c5 | 5712 | { |
b0310da4 | 5713 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5714 | /* If possible, send signals to the entire pgrp |
5715 | by sending an input character to it. */ | |
b0310da4 | 5716 | |
6be429b1 | 5717 | struct termios t; |
7f916a36 RS |
5718 | cc_t *sig_char = NULL; |
5719 | ||
60f0fb11 | 5720 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5721 | |
5722 | switch (signo) | |
5723 | { | |
5724 | case SIGINT: | |
7f916a36 RS |
5725 | sig_char = &t.c_cc[VINTR]; |
5726 | break; | |
6be429b1 JB |
5727 | |
5728 | case SIGQUIT: | |
7f916a36 RS |
5729 | sig_char = &t.c_cc[VQUIT]; |
5730 | break; | |
6be429b1 JB |
5731 | |
5732 | case SIGTSTP: | |
d0adf46f | 5733 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5734 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5735 | #else |
7f916a36 | 5736 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5737 | #endif |
7f916a36 | 5738 | break; |
6be429b1 JB |
5739 | } |
5740 | ||
ca4313d5 | 5741 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc | 5742 | { |
f990b4e5 | 5743 | send_process (proc, (char *) sig_char, 1, Qnil); |
f1c206fc RS |
5744 | return; |
5745 | } | |
5746 | /* If we can't send the signal with a character, | |
5747 | fall through and send it another way. */ | |
f1c206fc RS |
5748 | |
5749 | /* The code above may fall through if it can't | |
5750 | handle the signal. */ | |
20505336 | 5751 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5752 | |
177c0ea7 | 5753 | #ifdef TIOCGPGRP |
2af70a0c | 5754 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5755 | Otherwise, use the pty to get the pgrp. |
5756 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5757 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5758 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5759 | His patch indicates that if TIOCGPGRP returns an error, then |
5760 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5761 | |
16782258 | 5762 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5763 | |
16782258 JD |
5764 | if (gid == -1) |
5765 | /* If we can't get the information, assume | |
5766 | the shell owns the tty. */ | |
6bfd98e7 | 5767 | gid = p->pid; |
2af70a0c RS |
5768 | |
5769 | /* It is not clear whether anything really can set GID to -1. | |
5770 | Perhaps on some system one of those ioctls can or could do so. | |
5771 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5772 | if (gid == -1) |
5773 | no_pgrp = 1; | |
b0310da4 | 5774 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5775 | /* Can't select pgrps on this system, so we know that |
5776 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5777 | gid = p->pid; |
301c3fe4 | 5778 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5779 | |
5780 | /* If current_group is lambda, and the shell owns the terminal, | |
5781 | don't send any signal. */ | |
6bfd98e7 | 5782 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5783 | return; |
d0d6b7c5 | 5784 | } |
d0d6b7c5 JB |
5785 | |
5786 | switch (signo) | |
5787 | { | |
5788 | #ifdef SIGCONT | |
5789 | case SIGCONT: | |
6bfd98e7 | 5790 | p->raw_status_new = 0; |
6a09a33b | 5791 | pset_status (p, Qrun); |
60f0fb11 | 5792 | p->tick = ++process_tick; |
d0d6b7c5 | 5793 | if (!nomsg) |
e42bdf01 CY |
5794 | { |
5795 | status_notify (NULL); | |
5796 | redisplay_preserve_echo_area (13); | |
5797 | } | |
d0d6b7c5 | 5798 | break; |
301c3fe4 | 5799 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 5800 | case SIGINT: |
d0d6b7c5 | 5801 | case SIGQUIT: |
d0d6b7c5 | 5802 | case SIGKILL: |
60f0fb11 | 5803 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5804 | break; |
5805 | } | |
5806 | ||
5807 | /* If we don't have process groups, send the signal to the immediate | |
5808 | subprocess. That isn't really right, but it's better than any | |
5809 | obvious alternative. */ | |
5810 | if (no_pgrp) | |
5811 | { | |
6bfd98e7 | 5812 | kill (p->pid, signo); |
d0d6b7c5 JB |
5813 | return; |
5814 | } | |
5815 | ||
5816 | /* gid may be a pid, or minus a pgrp's number */ | |
5817 | #ifdef TIOCSIGSEND | |
5818 | if (!NILP (current_group)) | |
16782258 | 5819 | { |
60f0fb11 | 5820 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
d983a10b | 5821 | kill (-gid, signo); |
16782258 | 5822 | } |
d0d6b7c5 JB |
5823 | else |
5824 | { | |
6bfd98e7 | 5825 | gid = - p->pid; |
d0d6b7c5 JB |
5826 | kill (gid, signo); |
5827 | } | |
301c3fe4 | 5828 | #else /* ! defined (TIOCSIGSEND) */ |
d983a10b | 5829 | kill (-gid, signo); |
301c3fe4 | 5830 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5831 | } |
5832 | ||
5833 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5834 | doc: /* Interrupt process PROCESS. |
5835 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5836 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5837 | Second arg CURRENT-GROUP non-nil means send signal to |
5838 | the current process-group of the process's controlling terminal | |
5839 | rather than to the process's own process group. | |
5840 | If the process is a shell, this means interrupt current subjob | |
5841 | rather than the shell. | |
5842 | ||
5843 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5844 | don't send the signal. */) | |
5842a27b | 5845 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5846 | { |
5847 | process_send_signal (process, SIGINT, current_group, 0); | |
5848 | return process; | |
5849 | } | |
5850 | ||
5851 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5852 | doc: /* Kill process PROCESS. May be process or name of one. |
5853 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5854 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5855 | { |
5856 | process_send_signal (process, SIGKILL, current_group, 0); | |
5857 | return process; | |
5858 | } | |
5859 | ||
5860 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5861 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5862 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5863 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5864 | { |
5865 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5866 | return process; | |
5867 | } | |
5868 | ||
5869 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5870 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5871 | See function `interrupt-process' for more details on usage. |
d888760c GM |
5872 | If PROCESS is a network or serial process, inhibit handling of incoming |
5873 | traffic. */) | |
5842a27b | 5874 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 5875 | { |
d888760c | 5876 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
5877 | { |
5878 | struct Lisp_Process *p; | |
177c0ea7 | 5879 | |
e690ca94 | 5880 | p = XPROCESS (process); |
4d2b044c | 5881 | if (NILP (p->command) |
60f0fb11 | 5882 | && p->infd >= 0) |
e690ca94 | 5883 | { |
60f0fb11 SM |
5884 | FD_CLR (p->infd, &input_wait_mask); |
5885 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 | 5886 | } |
6a09a33b | 5887 | pset_command (p, Qt); |
e690ca94 KS |
5888 | return process; |
5889 | } | |
d0d6b7c5 | 5890 | #ifndef SIGTSTP |
a9a73d6c | 5891 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
5892 | #else |
5893 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5894 | #endif | |
5895 | return process; | |
5896 | } | |
5897 | ||
5898 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5899 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5900 | See function `interrupt-process' for more details on usage. |
d888760c GM |
5901 | If PROCESS is a network or serial process, resume handling of incoming |
5902 | traffic. */) | |
5842a27b | 5903 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 5904 | { |
d888760c | 5905 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
5906 | { |
5907 | struct Lisp_Process *p; | |
5908 | ||
5909 | p = XPROCESS (process); | |
4d2b044c | 5910 | if (EQ (p->command, Qt) |
60f0fb11 | 5911 | && p->infd >= 0 |
4d2b044c | 5912 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
e690ca94 | 5913 | { |
60f0fb11 SM |
5914 | FD_SET (p->infd, &input_wait_mask); |
5915 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
5916 | #ifdef WINDOWSNT |
5917 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
5918 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 5919 | #else /* not WINDOWSNT */ |
d888760c | 5920 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 5921 | #endif /* not WINDOWSNT */ |
e690ca94 | 5922 | } |
6a09a33b | 5923 | pset_command (p, Qnil); |
e690ca94 KS |
5924 | return process; |
5925 | } | |
d0d6b7c5 JB |
5926 | #ifdef SIGCONT |
5927 | process_send_signal (process, SIGCONT, current_group, 0); | |
5928 | #else | |
a9a73d6c | 5929 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
5930 | #endif |
5931 | return process; | |
5932 | } | |
5933 | ||
d983a10b PE |
5934 | /* Return the integer value of the signal whose abbreviation is ABBR, |
5935 | or a negative number if there is no such signal. */ | |
5936 | static int | |
5937 | abbr_to_signal (char const *name) | |
5938 | { | |
5939 | int i, signo; | |
5940 | char sigbuf[20]; /* Large enough for all valid signal abbreviations. */ | |
5941 | ||
5942 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) | |
5943 | name += 3; | |
5944 | ||
5945 | for (i = 0; i < sizeof sigbuf; i++) | |
5946 | { | |
5947 | sigbuf[i] = c_toupper (name[i]); | |
5948 | if (! sigbuf[i]) | |
5949 | return str2sig (sigbuf, &signo) == 0 ? signo : -1; | |
5950 | } | |
5951 | ||
5952 | return -1; | |
5953 | } | |
5954 | ||
d0d6b7c5 | 5955 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, |
cdd5ea86 KS |
5956 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
5957 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 5958 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
5959 | process to signal; in this case, the process need not be a child of |
5960 | this Emacs. | |
fdb82f93 | 5961 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 5962 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 5963 | { |
6bfd98e7 | 5964 | pid_t pid; |
d983a10b | 5965 | int signo; |
cdd5ea86 | 5966 | |
cdd5ea86 KS |
5967 | if (STRINGP (process)) |
5968 | { | |
d311d28c PE |
5969 | Lisp_Object tem = Fget_process (process); |
5970 | if (NILP (tem)) | |
cdd5ea86 | 5971 | { |
d44287d4 PE |
5972 | Lisp_Object process_number = |
5973 | string_to_number (SSDATA (process), 10, 1); | |
5974 | if (INTEGERP (process_number) || FLOATP (process_number)) | |
5975 | tem = process_number; | |
cdd5ea86 KS |
5976 | } |
5977 | process = tem; | |
5978 | } | |
d44287d4 | 5979 | else if (!NUMBERP (process)) |
cdd5ea86 | 5980 | process = get_process (process); |
177c0ea7 | 5981 | |
cdd5ea86 KS |
5982 | if (NILP (process)) |
5983 | return process; | |
5984 | ||
d83cf4cc PE |
5985 | if (NUMBERP (process)) |
5986 | CONS_TO_INTEGER (process, pid_t, pid); | |
d44287d4 PE |
5987 | else |
5988 | { | |
5989 | CHECK_PROCESS (process); | |
5990 | pid = XPROCESS (process)->pid; | |
5991 | if (pid <= 0) | |
4d2b044c | 5992 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
d44287d4 | 5993 | } |
4766242d | 5994 | |
4766242d | 5995 | if (INTEGERP (sigcode)) |
d983a10b PE |
5996 | { |
5997 | CHECK_TYPE_RANGED_INTEGER (int, sigcode); | |
5998 | signo = XINT (sigcode); | |
5999 | } | |
4766242d RS |
6000 | else |
6001 | { | |
25a48bd0 | 6002 | char *name; |
4766242d | 6003 | |
b7826503 | 6004 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6005 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6006 | |
d983a10b PE |
6007 | signo = abbr_to_signal (name); |
6008 | if (signo < 0) | |
9fa195a2 | 6009 | error ("Undefined signal name %s", name); |
4766242d RS |
6010 | } |
6011 | ||
d983a10b | 6012 | return make_number (kill (pid, signo)); |
d0d6b7c5 JB |
6013 | } |
6014 | ||
6015 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6016 | doc: /* Make PROCESS see end-of-file in its input. |
6017 | EOF comes after any text already sent to it. | |
6018 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6019 | nil, indicating the current buffer's process. | |
6020 | If PROCESS is a network connection, or is a process communicating | |
6021 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6022 | text to PROCESS after you call this function. |
6023 | If PROCESS is a serial process, wait until all output written to the | |
6024 | process has been transmitted to the serial port. */) | |
5842a27b | 6025 | (Lisp_Object process) |
d0d6b7c5 JB |
6026 | { |
6027 | Lisp_Object proc; | |
de7fbd09 | 6028 | struct coding_system *coding; |
d0d6b7c5 | 6029 | |
e690ca94 KS |
6030 | if (DATAGRAM_CONN_P (process)) |
6031 | return process; | |
6032 | ||
d0d6b7c5 | 6033 | proc = get_process (process); |
60f0fb11 | 6034 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6035 | |
6036 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6037 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 | 6038 | update_status (XPROCESS (proc)); |
4d2b044c DA |
6039 | if (! EQ (XPROCESS (proc)->status, Qrun)) |
6040 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); | |
577d03d5 | 6041 | |
de7fbd09 KH |
6042 | if (CODING_REQUIRE_FLUSHING (coding)) |
6043 | { | |
6044 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6045 | send_process (proc, "", 0, Qnil); | |
6046 | } | |
6047 | ||
60f0fb11 | 6048 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6049 | send_process (proc, "\004", 1, Qnil); |
4d2b044c | 6050 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6051 | { |
a7ebc409 | 6052 | #ifndef WINDOWSNT |
d888760c GM |
6053 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6054 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6055 | #endif /* not WINDOWSNT */ |
d888760c GM |
6056 | /* Do nothing on Windows because writes are blocking. */ |
6057 | } | |
d0d6b7c5 JB |
6058 | else |
6059 | { | |
4525f571 RS |
6060 | int old_outfd, new_outfd; |
6061 | ||
93853f3d | 6062 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6063 | /* If this is a network connection, or socketpair is used |
6064 | for communication with the subprocess, call shutdown to cause EOF. | |
6065 | (In some old system, shutdown to socketpair doesn't work. | |
6066 | Then we just can't win.) */ | |
4d2b044c | 6067 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6068 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6069 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6070 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6071 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6072 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6073 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6074 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6075 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6076 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 | 6077 | if (new_outfd < 0) |
1088b922 | 6078 | emacs_abort (); |
60f0fb11 | 6079 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6080 | |
6081 | if (!proc_encode_coding_system[new_outfd]) | |
6082 | proc_encode_coding_system[new_outfd] | |
23f86fce | 6083 | = xmalloc (sizeof (struct coding_system)); |
ae1d87e2 PE |
6084 | *proc_encode_coding_system[new_outfd] |
6085 | = *proc_encode_coding_system[old_outfd]; | |
72af86bd AS |
6086 | memset (proc_encode_coding_system[old_outfd], 0, |
6087 | sizeof (struct coding_system)); | |
4525f571 | 6088 | |
60f0fb11 | 6089 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6090 | } |
d0d6b7c5 JB |
6091 | return process; |
6092 | } | |
d0d6b7c5 | 6093 | \f |
bb5f74ee | 6094 | /* The main Emacs thread records child processes in three places: |
0b3d4a47 | 6095 | |
bb5f74ee PE |
6096 | - Vprocess_alist, for asynchronous subprocesses, which are child |
6097 | processes visible to Lisp. | |
6098 | ||
6099 | - deleted_pid_list, for child processes invisible to Lisp, | |
6100 | typically because of delete-process. These are recorded so that | |
6101 | the processes can be reaped when they exit, so that the operating | |
6102 | system's process table is not cluttered by zombies. | |
0b3d4a47 | 6103 | |
bb5f74ee PE |
6104 | - the local variable PID in Fcall_process, call_process_cleanup and |
6105 | call_process_kill, for synchronous subprocesses. | |
6106 | record_unwind_protect is used to make sure this process is not | |
6107 | forgotten: if the user interrupts call-process and the child | |
6108 | process refuses to exit immediately even with two C-g's, | |
6109 | call_process_kill adds PID's contents to deleted_pid_list before | |
6110 | returning. | |
0b3d4a47 | 6111 | |
bb5f74ee PE |
6112 | The main Emacs thread invokes waitpid only on child processes that |
6113 | it creates and that have not been reaped. This avoid races on | |
6114 | platforms such as GTK, where other threads create their own | |
6115 | subprocesses which the main thread should not reap. For example, | |
6116 | if the main thread attempted to reap an already-reaped child, it | |
6117 | might inadvertently reap a GTK-created process that happened to | |
6118 | have the same process ID. */ | |
6119 | ||
f019a684 PE |
6120 | /* LIB_CHILD_HANDLER is a SIGCHLD handler that Emacs calls while doing |
6121 | its own SIGCHLD handling. On POSIXish systems, glib needs this to | |
fa55d2aa PE |
6122 | keep track of its own children. GNUstep is similar. */ |
6123 | ||
f019a684 | 6124 | static void dummy_handler (int sig) {} |
fa55d2aa | 6125 | static signal_handler_t volatile lib_child_handler; |
f019a684 | 6126 | |
bb5f74ee PE |
6127 | /* Handle a SIGCHLD signal by looking for known child processes of |
6128 | Emacs whose status have changed. For each one found, record its | |
6129 | new status. | |
177c0ea7 | 6130 | |
3fed8ad5 GM |
6131 | All we do is change the status; we do not run sentinels or print |
6132 | notifications. That is saved for the next time keyboard input is | |
6133 | done, in order to avoid timing errors. | |
6134 | ||
6135 | ** WARNING: this can be called during garbage collection. | |
6136 | Therefore, it must not be fooled by the presence of mark bits in | |
6137 | Lisp objects. | |
6138 | ||
6139 | ** USG WARNING: Although it is not obvious from the documentation | |
6140 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6141 | signal() before executing at least one wait(), otherwise the | |
6142 | handler will be called again, resulting in an infinite loop. The | |
6143 | relevant portion of the documentation reads "SIGCLD signals will be | |
6144 | queued and the signal-catching function will be continually | |
6145 | reentered until the queue is empty". Invoking signal() causes the | |
6146 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6147 | Inc. |
6148 | ||
6149 | ** Malloc WARNING: This should never call malloc either directly or | |
6150 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6151 | |
bb5f74ee PE |
6152 | static void |
6153 | handle_child_signal (int sig) | |
d0d6b7c5 | 6154 | { |
20ef56db | 6155 | Lisp_Object tail; |
d0d6b7c5 | 6156 | |
20ef56db | 6157 | /* Find the process that signaled us, and record its status. */ |
d0d6b7c5 | 6158 | |
bb5f74ee PE |
6159 | /* The process can have been deleted by Fdelete_process, or have |
6160 | been started asynchronously by Fcall_process. */ | |
20ef56db PE |
6161 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
6162 | { | |
0b3d4a47 PE |
6163 | bool all_pids_are_fixnums |
6164 | = (MOST_NEGATIVE_FIXNUM <= TYPE_MINIMUM (pid_t) | |
6165 | && TYPE_MAXIMUM (pid_t) <= MOST_POSITIVE_FIXNUM); | |
20ef56db | 6166 | Lisp_Object xpid = XCAR (tail); |
0b3d4a47 | 6167 | if (all_pids_are_fixnums ? INTEGERP (xpid) : NUMBERP (xpid)) |
a5cfdda8 | 6168 | { |
0b3d4a47 PE |
6169 | pid_t deleted_pid; |
6170 | if (INTEGERP (xpid)) | |
6171 | deleted_pid = XINT (xpid); | |
6172 | else | |
6173 | deleted_pid = XFLOAT_DATA (xpid); | |
bb5f74ee PE |
6174 | if (child_status_changed (deleted_pid, 0, 0)) |
6175 | XSETCAR (tail, Qnil); | |
a5cfdda8 | 6176 | } |
20ef56db | 6177 | } |
a5cfdda8 | 6178 | |
20ef56db | 6179 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ |
20ef56db PE |
6180 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
6181 | { | |
0b3d4a47 PE |
6182 | Lisp_Object proc = XCDR (XCAR (tail)); |
6183 | struct Lisp_Process *p = XPROCESS (proc); | |
bb5f74ee PE |
6184 | int status; |
6185 | ||
da9aff11 PE |
6186 | if (p->alive |
6187 | && child_status_changed (p->pid, &status, WUNTRACED | WCONTINUED)) | |
0b3d4a47 PE |
6188 | { |
6189 | /* Change the status of the process that was found. */ | |
6190 | p->tick = ++process_tick; | |
bb5f74ee | 6191 | p->raw_status = status; |
0b3d4a47 | 6192 | p->raw_status_new = 1; |
177c0ea7 | 6193 | |
0b3d4a47 | 6194 | /* If process has terminated, stop waiting for its output. */ |
bb5f74ee | 6195 | if (WIFSIGNALED (status) || WIFEXITED (status)) |
0b3d4a47 | 6196 | { |
0bce5d9e | 6197 | bool clear_desc_flag = 0; |
0b3d4a47 PE |
6198 | p->alive = 0; |
6199 | if (p->infd >= 0) | |
6200 | clear_desc_flag = 1; | |
e98d950b | 6201 | |
0b3d4a47 PE |
6202 | /* clear_desc_flag avoids a compiler bug in Microsoft C. */ |
6203 | if (clear_desc_flag) | |
6204 | { | |
6205 | FD_CLR (p->infd, &input_wait_mask); | |
6206 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
6207 | } | |
6208 | } | |
d0d6b7c5 | 6209 | } |
20ef56db | 6210 | } |
f019a684 PE |
6211 | |
6212 | lib_child_handler (sig); | |
d0d6b7c5 | 6213 | } |
20ef56db PE |
6214 | |
6215 | static void | |
6216 | deliver_child_signal (int sig) | |
6217 | { | |
4d7e6e51 | 6218 | deliver_process_signal (sig, handle_child_signal); |
20ef56db | 6219 | } |
d0d6b7c5 JB |
6220 | \f |
6221 | ||
3b9a3dfa | 6222 | static Lisp_Object |
b93aacde | 6223 | exec_sentinel_error_handler (Lisp_Object error_val) |
3b9a3dfa | 6224 | { |
b93aacde | 6225 | cmd_error_internal (error_val, "error in process sentinel: "); |
3b9a3dfa RS |
6226 | Vinhibit_quit = Qt; |
6227 | update_echo_area (); | |
833ba342 | 6228 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6229 | return Qt; |
3b9a3dfa RS |
6230 | } |
6231 | ||
d0d6b7c5 | 6232 | static void |
d3da34e0 | 6233 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6234 | { |
aba7731a | 6235 | Lisp_Object sentinel, odeactivate; |
1882aa38 | 6236 | struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 6237 | ptrdiff_t count = SPECPDL_INDEX (); |
1882aa38 | 6238 | bool outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6239 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6240 | |
84af9896 RS |
6241 | if (inhibit_sentinels) |
6242 | return; | |
6243 | ||
dfc21838 RS |
6244 | /* No need to gcpro these, because all we do with them later |
6245 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6246 | odeactivate = Vdeactivate_mark; |
aba7731a PE |
6247 | #if 0 |
6248 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 6249 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6250 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 6251 | #endif |
dfc21838 | 6252 | |
97e53006 SM |
6253 | /* There's no good reason to let sentinels change the current |
6254 | buffer, and many callers of accept-process-output, sit-for, and | |
6255 | friends don't expect current-buffer to be changed from under them. */ | |
66322887 | 6256 | record_unwind_current_buffer (); |
97e53006 | 6257 | |
4d2b044c | 6258 | sentinel = p->sentinel; |
d0d6b7c5 | 6259 | |
d0d6b7c5 JB |
6260 | /* Inhibit quit so that random quits don't screw up a running filter. */ |
6261 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6262 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6263 | |
4da2f5be RS |
6264 | /* In case we get recursively called, |
6265 | and we already saved the match data nonrecursively, | |
6266 | save the same match data in safely recursive fashion. */ | |
6267 | if (outer_running_asynch_code) | |
6268 | { | |
6269 | Lisp_Object tem; | |
89f2614d KS |
6270 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6271 | restore_search_regs (); | |
6272 | record_unwind_save_match_data (); | |
6273 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6274 | } |
6275 | ||
6276 | /* For speed, if a search happens within this code, | |
6277 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6278 | running_asynch_code = 1; |
4da2f5be | 6279 | |
3b9a3dfa RS |
6280 | internal_condition_case_1 (read_process_output_call, |
6281 | Fcons (sentinel, | |
6282 | Fcons (proc, Fcons (reason, Qnil))), | |
6283 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6284 | exec_sentinel_error_handler); | |
4da2f5be RS |
6285 | |
6286 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6287 | restore_search_regs (); |
4da2f5be | 6288 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6289 | |
6290 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6291 | |
6292 | /* Restore waiting_for_user_input_p as it was | |
6293 | when we were called, in case the filter clobbered it. */ | |
6294 | waiting_for_user_input_p = waiting; | |
6295 | ||
7973cfa8 | 6296 | #if 0 |
dfc21838 RS |
6297 | if (! EQ (Fcurrent_buffer (), obuffer) |
6298 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6299 | #endif |
927e08be RS |
6300 | /* But do it only if the caller is actually going to read events. |
6301 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6302 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6303 | if (waiting_for_user_input_p == -1) |
6304 | record_asynch_buffer_change (); | |
8fb3cf64 | 6305 | |
2ea6d561 | 6306 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6307 | } |
6308 | ||
6309 | /* Report all recent events of a change in process status | |
6310 | (either run the sentinel or output a message). | |
b50fe468 RS |
6311 | This is usually done while Emacs is waiting for keyboard input |
6312 | but can be done at other times. */ | |
d0d6b7c5 | 6313 | |
ff6daed3 | 6314 | static void |
d3da34e0 | 6315 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 | 6316 | { |
1aa8d505 | 6317 | register Lisp_Object proc; |
2e4149a8 | 6318 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6319 | struct gcpro gcpro1, gcpro2; |
6320 | ||
2e4149a8 KH |
6321 | tail = Qnil; |
6322 | msg = Qnil; | |
d0d6b7c5 JB |
6323 | /* We need to gcpro tail; if read_process_output calls a filter |
6324 | which deletes a process and removes the cons to which tail points | |
6325 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6326 | reference. */ | |
6327 | GCPRO2 (tail, msg); | |
6328 | ||
30623085 RS |
6329 | /* Set this now, so that if new processes are created by sentinels |
6330 | that we run, we get called again to handle their status changes. */ | |
6331 | update_tick = process_tick; | |
6332 | ||
99784d63 | 6333 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6334 | { |
30623085 RS |
6335 | Lisp_Object symbol; |
6336 | register struct Lisp_Process *p; | |
6337 | ||
99784d63 | 6338 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6339 | p = XPROCESS (proc); |
6340 | ||
60f0fb11 | 6341 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6342 | { |
60f0fb11 | 6343 | p->update_tick = p->tick; |
d0d6b7c5 | 6344 | |
30623085 | 6345 | /* If process is still active, read any output that remains. */ |
4d2b044c DA |
6346 | while (! EQ (p->filter, Qt) |
6347 | && ! EQ (p->status, Qconnect) | |
6348 | && ! EQ (p->status, Qlisten) | |
d888760c | 6349 | /* Network or serial process not stopped: */ |
4d2b044c | 6350 | && ! EQ (p->command, Qt) |
60f0fb11 | 6351 | && p->infd >= 0 |
ff6daed3 | 6352 | && p != deleting_process |
60f0fb11 | 6353 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6354 | |
30623085 | 6355 | /* Get the text to use for the message. */ |
6bfd98e7 | 6356 | if (p->raw_status_new) |
30623085 | 6357 | update_status (p); |
116c423c | 6358 | msg = status_message (p); |
d0d6b7c5 | 6359 | |
30623085 | 6360 | /* If process is terminated, deactivate it or delete it. */ |
4d2b044c DA |
6361 | symbol = p->status; |
6362 | if (CONSP (p->status)) | |
6363 | symbol = XCAR (p->status); | |
d0d6b7c5 | 6364 | |
30623085 RS |
6365 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6366 | || EQ (symbol, Qclosed)) | |
6367 | { | |
6368 | if (delete_exited_processes) | |
6369 | remove_process (proc); | |
6370 | else | |
6371 | deactivate_process (proc); | |
6372 | } | |
d0d6b7c5 | 6373 | |
0ad61fe7 | 6374 | /* The actions above may have further incremented p->tick. |
1aa8d505 SM |
6375 | So set p->update_tick again so that an error in the sentinel will |
6376 | not cause this code to be run again. */ | |
60f0fb11 | 6377 | p->update_tick = p->tick; |
30623085 | 6378 | /* Now output the message suitably. */ |
1aa8d505 | 6379 | exec_sentinel (proc, msg); |
30623085 RS |
6380 | } |
6381 | } /* end for */ | |
d0d6b7c5 | 6382 | |
1aa8d505 | 6383 | update_mode_lines++; /* In case buffers use %s in mode-line-format. */ |
d0d6b7c5 JB |
6384 | UNGCPRO; |
6385 | } | |
0fa1789e | 6386 | |
1aa8d505 SM |
6387 | DEFUN ("internal-default-process-sentinel", Finternal_default_process_sentinel, |
6388 | Sinternal_default_process_sentinel, 2, 2, 0, | |
6389 | doc: /* Function used as default sentinel for processes. */) | |
6390 | (Lisp_Object proc, Lisp_Object msg) | |
6391 | { | |
6392 | Lisp_Object buffer, symbol; | |
6393 | struct Lisp_Process *p; | |
6394 | CHECK_PROCESS (proc); | |
6395 | p = XPROCESS (proc); | |
6396 | buffer = p->buffer; | |
6397 | symbol = p->status; | |
6398 | if (CONSP (symbol)) | |
6399 | symbol = XCAR (symbol); | |
6400 | ||
6401 | if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6402 | { | |
6403 | Lisp_Object tem; | |
6404 | struct buffer *old = current_buffer; | |
6405 | ptrdiff_t opoint, opoint_byte; | |
6406 | ptrdiff_t before, before_byte; | |
6407 | ||
6408 | /* Avoid error if buffer is deleted | |
6409 | (probably that's why the process is dead, too). */ | |
6410 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) | |
6411 | return Qnil; | |
6412 | Fset_buffer (buffer); | |
6413 | ||
6414 | if (NILP (BVAR (current_buffer, enable_multibyte_characters))) | |
6415 | msg = (code_convert_string_norecord | |
6416 | (msg, Vlocale_coding_system, 1)); | |
6417 | ||
6418 | opoint = PT; | |
6419 | opoint_byte = PT_BYTE; | |
6420 | /* Insert new output into buffer | |
6421 | at the current end-of-output marker, | |
6422 | thus preserving logical ordering of input and output. */ | |
6423 | if (XMARKER (p->mark)->buffer) | |
6424 | Fgoto_char (p->mark); | |
6425 | else | |
6426 | SET_PT_BOTH (ZV, ZV_BYTE); | |
6427 | ||
6428 | before = PT; | |
6429 | before_byte = PT_BYTE; | |
6430 | ||
6431 | tem = BVAR (current_buffer, read_only); | |
6432 | bset_read_only (current_buffer, Qnil); | |
6433 | insert_string ("\nProcess "); | |
6434 | { /* FIXME: temporary kludge. */ | |
6435 | Lisp_Object tem2 = p->name; Finsert (1, &tem2); } | |
6436 | insert_string (" "); | |
6437 | Finsert (1, &msg); | |
6438 | bset_read_only (current_buffer, tem); | |
6439 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
6440 | ||
6441 | if (opoint >= before) | |
6442 | SET_PT_BOTH (opoint + (PT - before), | |
6443 | opoint_byte + (PT_BYTE - before_byte)); | |
6444 | else | |
6445 | SET_PT_BOTH (opoint, opoint_byte); | |
6446 | ||
6447 | set_buffer_internal (old); | |
6448 | } | |
6449 | return Qnil; | |
6450 | } | |
6451 | ||
0fa1789e KH |
6452 | \f |
6453 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6454 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6455 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6456 | DECODING will be used to decode subprocess output and ENCODING to | |
6457 | encode subprocess input. */) | |
5842a27b | 6458 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6459 | { |
6460 | register struct Lisp_Process *p; | |
6461 | ||
f3d9532b JB |
6462 | CHECK_PROCESS (process); |
6463 | p = XPROCESS (process); | |
60f0fb11 | 6464 | if (p->infd < 0) |
4d2b044c | 6465 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6466 | if (p->outfd < 0) |
4d2b044c | 6467 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6468 | Fcheck_coding_system (decoding); |
6469 | Fcheck_coding_system (encoding); | |
76d812bb | 6470 | encoding = coding_inherit_eol_type (encoding, Qnil); |
6a09a33b PE |
6471 | pset_decode_coding_system (p, decoding); |
6472 | pset_encode_coding_system (p, encoding); | |
f3d9532b | 6473 | setup_process_coding_systems (process); |
0fa1789e KH |
6474 | |
6475 | return Qnil; | |
6476 | } | |
6477 | ||
6478 | DEFUN ("process-coding-system", | |
6479 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6480 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6481 | (register Lisp_Object process) |
0fa1789e | 6482 | { |
f3d9532b | 6483 | CHECK_PROCESS (process); |
4d2b044c DA |
6484 | return Fcons (XPROCESS (process)->decode_coding_system, |
6485 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6486 | } |
03f04413 KH |
6487 | |
6488 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6489 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6490 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6491 | If FLAG is non-nil, the filter is given multibyte strings. | |
6492 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6493 | all character code conversion except for end-of-line conversion is |
6494 | suppressed. */) | |
5842a27b | 6495 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6496 | { |
6497 | register struct Lisp_Process *p; | |
6498 | ||
f3d9532b JB |
6499 | CHECK_PROCESS (process); |
6500 | p = XPROCESS (process); | |
5431bd6a | 6501 | if (NILP (flag)) |
6a09a33b PE |
6502 | pset_decode_coding_system |
6503 | (p, raw_text_coding_system (p->decode_coding_system)); | |
f3d9532b | 6504 | setup_process_coding_systems (process); |
03f04413 KH |
6505 | |
6506 | return Qnil; | |
6507 | } | |
6508 | ||
6509 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6510 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6511 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6512 | (Lisp_Object process) |
03f04413 KH |
6513 | { |
6514 | register struct Lisp_Process *p; | |
5431bd6a | 6515 | struct coding_system *coding; |
03f04413 | 6516 | |
f3d9532b JB |
6517 | CHECK_PROCESS (process); |
6518 | p = XPROCESS (process); | |
5431bd6a SM |
6519 | coding = proc_decode_coding_system[p->infd]; |
6520 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6521 | } |
6522 | ||
6523 | ||
d0d6b7c5 | 6524 | \f |
cb768704 | 6525 | |
4475bec4 PE |
6526 | # ifdef HAVE_GPM |
6527 | ||
994d9841 | 6528 | void |
d3da34e0 | 6529 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6530 | { |
3fad2ad2 | 6531 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6532 | } |
6533 | ||
994d9841 | 6534 | void |
d3da34e0 | 6535 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6536 | { |
3fad2ad2 | 6537 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6538 | } |
6539 | ||
4475bec4 PE |
6540 | # endif |
6541 | ||
4a4bbad2 | 6542 | # ifdef USABLE_SIGIO |
006c5daa | 6543 | |
0bce5d9e | 6544 | /* Return true if *MASK has a bit set |
a69281ff RS |
6545 | that corresponds to one of the keyboard input descriptors. */ |
6546 | ||
0bce5d9e | 6547 | static bool |
d3da34e0 | 6548 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6549 | { |
6550 | int fd; | |
6551 | ||
3fad2ad2 | 6552 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6553 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6554 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6555 | return 1; | |
6556 | ||
6557 | return 0; | |
6558 | } | |
006c5daa | 6559 | # endif |
934e2a68 | 6560 | |
f388c88a | 6561 | #else /* not subprocesses */ |
934e2a68 | 6562 | |
f388c88a EZ |
6563 | /* Defined on msdos.c. */ |
6564 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
0d23c240 | 6565 | EMACS_TIME *, void *); |
934e2a68 | 6566 | |
f388c88a EZ |
6567 | /* Implementation of wait_reading_process_output, assuming that there |
6568 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6569 | |
f388c88a | 6570 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6571 | |
d188e26b | 6572 | TIME_LIMIT is: |
d35af63c PE |
6573 | timeout in seconds |
6574 | If negative, gobble data immediately available but don't wait for any. | |
6575 | ||
d188e26b | 6576 | NSECS is: |
d35af63c PE |
6577 | an additional duration to wait, measured in nanoseconds |
6578 | If TIME_LIMIT is zero, then: | |
d188e26b PE |
6579 | If NSECS == 0, there is no limit. |
6580 | If NSECS > 0, the timeout consists of NSECS only. | |
d35af63c | 6581 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
934e2a68 | 6582 | |
a0bee46f | 6583 | READ_KBD is: |
f388c88a EZ |
6584 | 0 to ignore keyboard input, or |
6585 | 1 to return when input is available, or | |
6586 | -1 means caller will actually read the input, so don't throw to | |
6587 | the quit handler. | |
934e2a68 | 6588 | |
f388c88a EZ |
6589 | see full version for other parameters. We know that wait_proc will |
6590 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6591 | |
9fa1de30 | 6592 | DO_DISPLAY means redisplay should be done to show subprocess |
f388c88a | 6593 | output that arrives. |
934e2a68 | 6594 | |
f388c88a EZ |
6595 | Return true if we received input from any process. */ |
6596 | ||
0bce5d9e | 6597 | bool |
d35af63c | 6598 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
9fa1de30 | 6599 | bool do_display, |
1408902e EZ |
6600 | Lisp_Object wait_for_cell, |
6601 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6602 | { |
f388c88a EZ |
6603 | register int nfds; |
6604 | EMACS_TIME end_time, timeout; | |
d0d6b7c5 | 6605 | |
d35af63c PE |
6606 | if (time_limit < 0) |
6607 | { | |
6608 | time_limit = 0; | |
6609 | nsecs = -1; | |
6610 | } | |
6611 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
6612 | time_limit = TYPE_MAXIMUM (time_t); | |
6613 | ||
f388c88a | 6614 | /* What does time_limit really mean? */ |
908589fd | 6615 | if (time_limit || nsecs > 0) |
f388c88a | 6616 | { |
e9a9ae03 PE |
6617 | timeout = make_emacs_time (time_limit, nsecs); |
6618 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
f388c88a | 6619 | } |
84af9896 | 6620 | |
f388c88a EZ |
6621 | /* Turn off periodic alarms (in case they are in use) |
6622 | and then turn off any other atimers, | |
6623 | because the select emulator uses alarms. */ | |
6624 | stop_polling (); | |
6625 | turn_on_atimers (0); | |
d0d6b7c5 | 6626 | |
f388c88a EZ |
6627 | while (1) |
6628 | { | |
0bce5d9e | 6629 | bool timeout_reduced_for_timers = 0; |
a0bee46f PE |
6630 | SELECT_TYPE waitchannels; |
6631 | int xerrno; | |
dd2281ae | 6632 | |
f388c88a EZ |
6633 | /* If calling from keyboard input, do not quit |
6634 | since we want to return C-g as an input character. | |
6635 | Otherwise, do pending quit if requested. */ | |
6636 | if (read_kbd >= 0) | |
6637 | QUIT; | |
bad49fc7 | 6638 | |
f388c88a EZ |
6639 | /* Exit now if the cell we're waiting for became non-nil. */ |
6640 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6641 | break; | |
0a65b032 | 6642 | |
1aa8d505 SM |
6643 | /* Compute time from now till when time limit is up. */ |
6644 | /* Exit if already run out. */ | |
d35af63c | 6645 | if (nsecs < 0) |
52fd88d3 | 6646 | { |
216ee680 | 6647 | /* A negative timeout means |
52fd88d3 | 6648 | gobble output available now |
1aa8d505 | 6649 | but don't wait at all. */ |
52fd88d3 | 6650 | |
e9a9ae03 | 6651 | timeout = make_emacs_time (0, 0); |
52fd88d3 | 6652 | } |
908589fd | 6653 | else if (time_limit || nsecs > 0) |
6720a7fb | 6654 | { |
e9a9ae03 PE |
6655 | EMACS_TIME now = current_emacs_time (); |
6656 | if (EMACS_TIME_LE (end_time, now)) | |
6720a7fb | 6657 | break; |
e9a9ae03 | 6658 | timeout = sub_emacs_time (end_time, now); |
6720a7fb | 6659 | } |
52fd88d3 EZ |
6660 | else |
6661 | { | |
e9a9ae03 | 6662 | timeout = make_emacs_time (100000, 0); |
52fd88d3 | 6663 | } |
6720a7fb | 6664 | |
bae8d137 RS |
6665 | /* If our caller will not immediately handle keyboard events, |
6666 | run timer events directly. | |
6667 | (Callers that will immediately read keyboard events | |
6668 | call timer_delay on their own.) */ | |
f3fbd155 | 6669 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6670 | { |
6671 | EMACS_TIME timer_delay; | |
0a65b032 | 6672 | |
9baacf76 | 6673 | do |
0a65b032 | 6674 | { |
9fa1de30 | 6675 | unsigned old_timers_run = timers_run; |
f868cd8a | 6676 | timer_delay = timer_check (); |
9baacf76 GM |
6677 | if (timers_run != old_timers_run && do_display) |
6678 | /* We must retry, since a timer may have requeued itself | |
6679 | and that could alter the time delay. */ | |
3007ebfb | 6680 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6681 | else |
6682 | break; | |
0a65b032 | 6683 | } |
9baacf76 | 6684 | while (!detect_input_pending ()); |
0a65b032 | 6685 | |
52fd88d3 | 6686 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6687 | if (read_kbd != 0 |
52fd88d3 EZ |
6688 | && requeued_events_pending_p ()) |
6689 | break; | |
6690 | ||
908589fd | 6691 | if (EMACS_TIME_VALID_P (timer_delay) && nsecs >= 0) |
bae8d137 | 6692 | { |
d35af63c | 6693 | if (EMACS_TIME_LT (timer_delay, timeout)) |
bae8d137 | 6694 | { |
f694e5d2 | 6695 | timeout = timer_delay; |
bae8d137 RS |
6696 | timeout_reduced_for_timers = 1; |
6697 | } | |
6698 | } | |
6699 | } | |
6700 | ||
6720a7fb JB |
6701 | /* Cause C-g and alarm signals to take immediate action, |
6702 | and cause input available signals to zero out timeout. */ | |
b89a415a | 6703 | if (read_kbd < 0) |
6720a7fb JB |
6704 | set_waiting_for_input (&timeout); |
6705 | ||
ff11dfa1 | 6706 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6707 | reprocess its display stuff. */ |
5164ee8e | 6708 | if (frame_garbaged && do_display) |
0a65b032 RS |
6709 | { |
6710 | clear_waiting_for_input (); | |
3007ebfb | 6711 | redisplay_preserve_echo_area (15); |
b89a415a | 6712 | if (read_kbd < 0) |
0a65b032 RS |
6713 | set_waiting_for_input (&timeout); |
6714 | } | |
6720a7fb | 6715 | |
a0bee46f PE |
6716 | /* Wait till there is something to do. */ |
6717 | FD_ZERO (&waitchannels); | |
b89a415a | 6718 | if (read_kbd && detect_input_pending ()) |
a0bee46f PE |
6719 | nfds = 0; |
6720 | else | |
1861b214 | 6721 | { |
a0bee46f PE |
6722 | if (read_kbd || !NILP (wait_for_cell)) |
6723 | FD_SET (0, &waitchannels); | |
6724 | nfds = pselect (1, &waitchannels, NULL, NULL, &timeout, NULL); | |
1861b214 | 6725 | } |
f694e5d2 KH |
6726 | |
6727 | xerrno = errno; | |
6720a7fb JB |
6728 | |
6729 | /* Make C-g and alarm signals set flags again */ | |
6730 | clear_waiting_for_input (); | |
6731 | ||
6732 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 6733 | do_pending_window_change (0); |
6720a7fb | 6734 | |
d35af63c | 6735 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
f694e5d2 KH |
6736 | /* We waited the full specified time, so return now. */ |
6737 | break; | |
6738 | ||
6720a7fb JB |
6739 | if (nfds == -1) |
6740 | { | |
6741 | /* If the system call was interrupted, then go around the | |
6742 | loop again. */ | |
f694e5d2 | 6743 | if (xerrno == EINTR) |
8db121c4 | 6744 | FD_ZERO (&waitchannels); |
f694e5d2 | 6745 | else |
68c45bf0 | 6746 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 6747 | } |
6720a7fb | 6748 | |
f694e5d2 KH |
6749 | /* Check for keyboard input */ |
6750 | ||
b89a415a | 6751 | if (read_kbd |
78c1afb6 | 6752 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 6753 | { |
78c1afb6 | 6754 | swallow_events (do_display); |
f694e5d2 | 6755 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 6756 | break; |
78c1afb6 EZ |
6757 | } |
6758 | ||
52fd88d3 | 6759 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6760 | if (read_kbd |
52fd88d3 EZ |
6761 | && requeued_events_pending_p ()) |
6762 | break; | |
6763 | ||
f854a00b RS |
6764 | /* If wait_for_cell. check for keyboard input |
6765 | but don't run any timers. | |
6766 | ??? (It seems wrong to me to check for keyboard | |
6767 | input at all when wait_for_cell, but the code | |
6768 | has been this way since July 1994. | |
6769 | Try changing this after version 19.31.) */ | |
f3fbd155 | 6770 | if (! NILP (wait_for_cell) |
f854a00b RS |
6771 | && detect_input_pending ()) |
6772 | { | |
6773 | swallow_events (do_display); | |
6774 | if (detect_input_pending ()) | |
6775 | break; | |
6776 | } | |
6777 | ||
0a65b032 | 6778 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6779 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 6780 | break; |
6720a7fb JB |
6781 | } |
6782 | ||
a87b802f JB |
6783 | start_polling (); |
6784 | ||
6720a7fb JB |
6785 | return 0; |
6786 | } | |
6787 | ||
f388c88a EZ |
6788 | #endif /* not subprocesses */ |
6789 | ||
6790 | /* The following functions are needed even if async subprocesses are | |
6791 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 6792 | |
01faa934 DN |
6793 | /* Add DESC to the set of keyboard input descriptors. */ |
6794 | ||
6795 | void | |
6796 | add_keyboard_wait_descriptor (int desc) | |
6797 | { | |
bf05eed6 | 6798 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
6799 | FD_SET (desc, &input_wait_mask); |
6800 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
6801 | if (desc > max_input_desc) |
6802 | max_input_desc = desc; | |
bf05eed6 | 6803 | #endif |
01faa934 DN |
6804 | } |
6805 | ||
6806 | /* From now on, do not expect DESC to give keyboard input. */ | |
6807 | ||
6808 | void | |
6809 | delete_keyboard_wait_descriptor (int desc) | |
6810 | { | |
bf05eed6 | 6811 | #ifdef subprocesses |
01faa934 | 6812 | int fd; |
3fad2ad2 | 6813 | int lim = max_input_desc; |
01faa934 DN |
6814 | |
6815 | FD_CLR (desc, &input_wait_mask); | |
6816 | FD_CLR (desc, &non_process_wait_mask); | |
6817 | ||
3fad2ad2 | 6818 | if (desc == max_input_desc) |
01faa934 | 6819 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
6820 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
6821 | max_input_desc = fd; | |
bf05eed6 | 6822 | #endif |
01faa934 DN |
6823 | } |
6824 | ||
fc549af9 EZ |
6825 | /* Setup coding systems of PROCESS. */ |
6826 | ||
6827 | void | |
6828 | setup_process_coding_systems (Lisp_Object process) | |
6829 | { | |
6830 | #ifdef subprocesses | |
6831 | struct Lisp_Process *p = XPROCESS (process); | |
6832 | int inch = p->infd; | |
6833 | int outch = p->outfd; | |
6834 | Lisp_Object coding_system; | |
6835 | ||
6836 | if (inch < 0 || outch < 0) | |
6837 | return; | |
6838 | ||
6839 | if (!proc_decode_coding_system[inch]) | |
38182d90 | 6840 | proc_decode_coding_system[inch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c | 6841 | coding_system = p->decode_coding_system; |
1aa8d505 SM |
6842 | if (EQ (p->filter, Qinternal_default_process_filter) |
6843 | && BUFFERP (p->buffer)) | |
fc549af9 | 6844 | { |
4d2b044c | 6845 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
6846 | coding_system = raw_text_coding_system (coding_system); |
6847 | } | |
6848 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
6849 | ||
6850 | if (!proc_encode_coding_system[outch]) | |
38182d90 | 6851 | proc_encode_coding_system[outch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c | 6852 | setup_coding_system (p->encode_coding_system, |
fc549af9 EZ |
6853 | proc_encode_coding_system[outch]); |
6854 | #endif | |
6855 | } | |
6856 | ||
6857 | /* Close all descriptors currently in use for communication | |
6858 | with subprocess. This is used in a newly-forked subprocess | |
6859 | to get rid of irrelevant descriptors. */ | |
6860 | ||
6861 | void | |
6862 | close_process_descs (void) | |
6863 | { | |
6864 | #ifndef DOS_NT | |
6865 | int i; | |
6866 | for (i = 0; i < MAXDESC; i++) | |
6867 | { | |
6868 | Lisp_Object process; | |
6869 | process = chan_process[i]; | |
6870 | if (!NILP (process)) | |
6871 | { | |
6872 | int in = XPROCESS (process)->infd; | |
6873 | int out = XPROCESS (process)->outfd; | |
6874 | if (in >= 0) | |
6875 | emacs_close (in); | |
6876 | if (out >= 0 && in != out) | |
6877 | emacs_close (out); | |
6878 | } | |
6879 | } | |
6880 | #endif | |
6881 | } | |
6882 | ||
6720a7fb | 6883 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
6884 | doc: /* Return the (or a) process associated with BUFFER. |
6885 | BUFFER may be a buffer or the name of one. */) | |
6886 | (register Lisp_Object buffer) | |
6720a7fb | 6887 | { |
f388c88a EZ |
6888 | #ifdef subprocesses |
6889 | register Lisp_Object buf, tail, proc; | |
6890 | ||
6891 | if (NILP (buffer)) return Qnil; | |
6892 | buf = Fget_buffer (buffer); | |
6893 | if (NILP (buf)) return Qnil; | |
6894 | ||
6895 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
6896 | { | |
6897 | proc = Fcdr (XCAR (tail)); | |
4d2b044c | 6898 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
f388c88a EZ |
6899 | return proc; |
6900 | } | |
6901 | #endif /* subprocesses */ | |
6720a7fb JB |
6902 | return Qnil; |
6903 | } | |
6904 | ||
52a1b894 | 6905 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
6906 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
6907 | 1, 1, 0, | |
f388c88a EZ |
6908 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
6909 | If this flag is t, `buffer-file-coding-system' of the buffer | |
6910 | associated with PROCESS will inherit the coding system used to decode | |
6911 | the process output. */) | |
5842a27b | 6912 | (register Lisp_Object process) |
52a1b894 | 6913 | { |
f388c88a EZ |
6914 | #ifdef subprocesses |
6915 | CHECK_PROCESS (process); | |
6916 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
6917 | #else | |
52a1b894 EZ |
6918 | /* Ignore the argument and return the value of |
6919 | inherit-process-coding-system. */ | |
6920 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 6921 | #endif |
52a1b894 EZ |
6922 | } |
6923 | ||
6720a7fb | 6924 | /* Kill all processes associated with `buffer'. |
f388c88a | 6925 | If `buffer' is nil, kill all processes */ |
6720a7fb | 6926 | |
d9bb0c32 | 6927 | void |
f388c88a | 6928 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 6929 | { |
f388c88a EZ |
6930 | #ifdef subprocesses |
6931 | Lisp_Object tail, proc; | |
6932 | ||
6933 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
6934 | { | |
6935 | proc = XCDR (XCAR (tail)); | |
6936 | if (PROCESSP (proc) | |
4d2b044c | 6937 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
f388c88a EZ |
6938 | { |
6939 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
6940 | Fdelete_process (proc); | |
6941 | else if (XPROCESS (proc)->infd >= 0) | |
6942 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
6943 | } | |
6944 | } | |
6945 | #else /* subprocesses */ | |
6946 | /* Since we have no subprocesses, this does nothing. */ | |
6947 | #endif /* subprocesses */ | |
6720a7fb JB |
6948 | } |
6949 | ||
a7ca3326 | 6950 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, |
16a97296 | 6951 | Swaiting_for_user_input_p, 0, 0, 0, |
1aa8d505 | 6952 | doc: /* Return non-nil if Emacs is waiting for input from the user. |
77defa9a EZ |
6953 | This is intended for use by asynchronous process output filters and sentinels. */) |
6954 | (void) | |
6955 | { | |
6956 | #ifdef subprocesses | |
6957 | return (waiting_for_user_input_p ? Qt : Qnil); | |
6958 | #else | |
6959 | return Qnil; | |
6960 | #endif | |
6961 | } | |
6962 | ||
d568829b EZ |
6963 | /* Stop reading input from keyboard sources. */ |
6964 | ||
6965 | void | |
6966 | hold_keyboard_input (void) | |
6967 | { | |
6968 | kbd_is_on_hold = 1; | |
6969 | } | |
6970 | ||
6971 | /* Resume reading input from keyboard sources. */ | |
6972 | ||
6973 | void | |
6974 | unhold_keyboard_input (void) | |
6975 | { | |
6976 | kbd_is_on_hold = 0; | |
6977 | } | |
6978 | ||
0bce5d9e | 6979 | /* Return true if keyboard input is on hold, zero otherwise. */ |
d568829b | 6980 | |
0bce5d9e | 6981 | bool |
d568829b EZ |
6982 | kbd_on_hold_p (void) |
6983 | { | |
6984 | return kbd_is_on_hold; | |
6985 | } | |
6986 | ||
f388c88a EZ |
6987 | \f |
6988 | /* Enumeration of and access to system processes a-la ps(1). */ | |
6989 | ||
934e2a68 EZ |
6990 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
6991 | 0, 0, 0, | |
6992 | doc: /* Return a list of numerical process IDs of all running processes. | |
6993 | If this functionality is unsupported, return nil. | |
6994 | ||
f388c88a EZ |
6995 | See `process-attributes' for getting attributes of a process given its ID. */) |
6996 | (void) | |
6997 | { | |
6998 | return list_system_processes (); | |
6999 | } | |
7000 | ||
7001 | DEFUN ("process-attributes", Fprocess_attributes, | |
7002 | Sprocess_attributes, 1, 1, 0, | |
7003 | doc: /* Return attributes of the process given by its PID, a number. | |
7004 | ||
7005 | Value is an alist where each element is a cons cell of the form | |
7006 | ||
7007 | \(KEY . VALUE) | |
7008 | ||
7009 | If this functionality is unsupported, the value is nil. | |
7010 | ||
7011 | See `list-system-processes' for getting a list of all process IDs. | |
7012 | ||
7013 | The KEYs of the attributes that this function may return are listed | |
7014 | below, together with the type of the associated VALUE (in parentheses). | |
7015 | Not all platforms support all of these attributes; unsupported | |
7016 | attributes will not appear in the returned alist. | |
7017 | Unless explicitly indicated otherwise, numbers can have either | |
7018 | integer or floating point values. | |
7019 | ||
7020 | euid -- Effective user User ID of the process (number) | |
7021 | user -- User name corresponding to euid (string) | |
7022 | egid -- Effective user Group ID of the process (number) | |
7023 | group -- Group name corresponding to egid (string) | |
7024 | comm -- Command name (executable name only) (string) | |
7025 | state -- Process state code, such as "S", "R", or "T" (string) | |
7026 | ppid -- Parent process ID (number) | |
7027 | pgrp -- Process group ID (number) | |
7028 | sess -- Session ID, i.e. process ID of session leader (number) | |
7029 | ttname -- Controlling tty name (string) | |
7030 | tpgid -- ID of foreground process group on the process's tty (number) | |
7031 | minflt -- number of minor page faults (number) | |
7032 | majflt -- number of major page faults (number) | |
7033 | cminflt -- cumulative number of minor page faults (number) | |
7034 | cmajflt -- cumulative number of major page faults (number) | |
d35af63c PE |
7035 | utime -- user time used by the process, in (current-time) format, |
7036 | which is a list of integers (HIGH LOW USEC PSEC) | |
7037 | stime -- system time used by the process (current-time) | |
7038 | time -- sum of utime and stime (current-time) | |
7039 | cutime -- user time used by the process and its children (current-time) | |
7040 | cstime -- system time used by the process and its children (current-time) | |
7041 | ctime -- sum of cutime and cstime (current-time) | |
f388c88a EZ |
7042 | pri -- priority of the process (number) |
7043 | nice -- nice value of the process (number) | |
7044 | thcount -- process thread count (number) | |
d35af63c | 7045 | start -- time the process started (current-time) |
f388c88a EZ |
7046 | vsize -- virtual memory size of the process in KB's (number) |
7047 | rss -- resident set size of the process in KB's (number) | |
d35af63c | 7048 | etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format |
f388c88a EZ |
7049 | pcpu -- percents of CPU time used by the process (floating-point number) |
7050 | pmem -- percents of total physical memory used by process's resident set | |
7051 | (floating-point number) | |
7052 | args -- command line which invoked the process (string). */) | |
7053 | ( Lisp_Object pid) | |
7054 | { | |
7055 | return system_process_attributes (pid); | |
7056 | } | |
7057 | ||
fa55d2aa PE |
7058 | /* Arrange to catch SIGCHLD if this hasn't already been arranged. |
7059 | Invoke this after init_process_emacs, and after glib and/or GNUstep | |
7060 | futz with the SIGCHLD handler, but before Emacs forks any children. | |
7061 | This function's caller should block SIGCHLD. */ | |
0dfeed58 | 7062 | |
dae2f5ef PE |
7063 | #ifndef NS_IMPL_GNUSTEP |
7064 | static | |
7065 | #endif | |
c0342369 JD |
7066 | void |
7067 | catch_child_signal (void) | |
7068 | { | |
f019a684 | 7069 | struct sigaction action, old_action; |
c0342369 | 7070 | emacs_sigaction_init (&action, deliver_child_signal); |
dae2f5ef | 7071 | block_child_signal (); |
f019a684 PE |
7072 | sigaction (SIGCHLD, &action, &old_action); |
7073 | eassert (! (old_action.sa_flags & SA_SIGINFO)); | |
fa55d2aa | 7074 | |
dae2f5ef PE |
7075 | if (old_action.sa_handler != deliver_child_signal) |
7076 | lib_child_handler | |
7077 | = (old_action.sa_handler == SIG_DFL || old_action.sa_handler == SIG_IGN | |
7078 | ? dummy_handler | |
7079 | : old_action.sa_handler); | |
7080 | unblock_child_signal (); | |
c0342369 JD |
7081 | } |
7082 | ||
f388c88a | 7083 | \f |
b82da769 GM |
7084 | /* This is not called "init_process" because that is the name of a |
7085 | Mach system call, so it would cause problems on Darwin systems. */ | |
f388c88a | 7086 | void |
b82da769 | 7087 | init_process_emacs (void) |
f388c88a EZ |
7088 | { |
7089 | #ifdef subprocesses | |
7090 | register int i; | |
7091 | ||
7092 | inhibit_sentinels = 0; | |
7093 | ||
dae2f5ef PE |
7094 | #ifndef CANNOT_DUMP |
7095 | if (! noninteractive || initialized) | |
7096 | #endif | |
7097 | { | |
8f43ce49 | 7098 | #if defined HAVE_GLIB && !defined WINDOWSNT |
dae2f5ef PE |
7099 | /* Tickle glib's child-handling code. Ask glib to wait for Emacs itself; |
7100 | this should always fail, but is enough to initialize glib's | |
8f43ce49 PE |
7101 | private SIGCHLD handler, allowing catch_child_signal to copy |
7102 | it into lib_child_handler. */ | |
dae2f5ef PE |
7103 | g_source_unref (g_child_watch_source_new (getpid ())); |
7104 | #endif | |
7105 | catch_child_signal (); | |
7106 | } | |
7107 | ||
f388c88a EZ |
7108 | FD_ZERO (&input_wait_mask); |
7109 | FD_ZERO (&non_keyboard_wait_mask); | |
7110 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7111 | FD_ZERO (&write_mask); |
f388c88a | 7112 | max_process_desc = 0; |
3fad2ad2 | 7113 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7114 | |
7115 | #ifdef NON_BLOCKING_CONNECT | |
7116 | FD_ZERO (&connect_wait_mask); | |
7117 | num_pending_connects = 0; | |
7118 | #endif | |
7119 | ||
7120 | #ifdef ADAPTIVE_READ_BUFFERING | |
7121 | process_output_delay_count = 0; | |
7122 | process_output_skip = 0; | |
7123 | #endif | |
7124 | ||
7125 | /* Don't do this, it caused infinite select loops. The display | |
7126 | method should call add_keyboard_wait_descriptor on stdin if it | |
7127 | needs that. */ | |
7128 | #if 0 | |
7129 | FD_SET (0, &input_wait_mask); | |
7130 | #endif | |
7131 | ||
7132 | Vprocess_alist = Qnil; | |
f388c88a | 7133 | deleted_pid_list = Qnil; |
f388c88a EZ |
7134 | for (i = 0; i < MAXDESC; i++) |
7135 | { | |
7136 | chan_process[i] = Qnil; | |
7137 | proc_buffered_char[i] = -1; | |
7138 | } | |
7139 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7140 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7141 | #ifdef DATAGRAM_SOCKETS | |
7142 | memset (datagram_address, 0, sizeof datagram_address); | |
7143 | #endif | |
7144 | ||
f388c88a EZ |
7145 | { |
7146 | Lisp_Object subfeatures = Qnil; | |
7147 | const struct socket_options *sopt; | |
7148 | ||
7149 | #define ADD_SUBFEATURE(key, val) \ | |
7150 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7151 | ||
7152 | #ifdef NON_BLOCKING_CONNECT | |
7153 | ADD_SUBFEATURE (QCnowait, Qt); | |
7154 | #endif | |
7155 | #ifdef DATAGRAM_SOCKETS | |
7156 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7157 | #endif | |
7158 | #ifdef HAVE_SEQPACKET | |
7159 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7160 | #endif | |
7161 | #ifdef HAVE_LOCAL_SOCKETS | |
7162 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7163 | #endif | |
7164 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7165 | #ifdef AF_INET6 | |
7166 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7167 | #endif | |
7168 | #ifdef HAVE_GETSOCKNAME | |
7169 | ADD_SUBFEATURE (QCservice, Qt); | |
7170 | #endif | |
f388c88a | 7171 | ADD_SUBFEATURE (QCserver, Qt); |
f388c88a EZ |
7172 | |
7173 | for (sopt = socket_options; sopt->name; sopt++) | |
7174 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7175 | ||
7176 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7177 | } | |
f388c88a EZ |
7178 | |
7179 | #if defined (DARWIN_OS) | |
7180 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7181 | processes. As such, we only change the default value. */ | |
7182 | if (initialized) | |
7183 | { | |
f44bd759 PE |
7184 | char const *release = (STRINGP (Voperating_system_release) |
7185 | ? SSDATA (Voperating_system_release) | |
7186 | : 0); | |
6de0e799 | 7187 | if (!release || !release[0] || (release[0] < '7' && release[1] == '.')) { |
f388c88a EZ |
7188 | Vprocess_connection_type = Qnil; |
7189 | } | |
7190 | } | |
7191 | #endif | |
7192 | #endif /* subprocesses */ | |
7193 | kbd_is_on_hold = 0; | |
7194 | } | |
7195 | ||
7196 | void | |
7197 | syms_of_process (void) | |
7198 | { | |
7199 | #ifdef subprocesses | |
7200 | ||
cd3520a4 JB |
7201 | DEFSYM (Qprocessp, "processp"); |
7202 | DEFSYM (Qrun, "run"); | |
7203 | DEFSYM (Qstop, "stop"); | |
7204 | DEFSYM (Qsignal, "signal"); | |
f388c88a EZ |
7205 | |
7206 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7207 | here again. | |
934e2a68 | 7208 | |
f388c88a EZ |
7209 | Qexit = intern_c_string ("exit"); |
7210 | staticpro (&Qexit); */ | |
934e2a68 | 7211 | |
cd3520a4 JB |
7212 | DEFSYM (Qopen, "open"); |
7213 | DEFSYM (Qclosed, "closed"); | |
7214 | DEFSYM (Qconnect, "connect"); | |
7215 | DEFSYM (Qfailed, "failed"); | |
7216 | DEFSYM (Qlisten, "listen"); | |
7217 | DEFSYM (Qlocal, "local"); | |
7218 | DEFSYM (Qipv4, "ipv4"); | |
f388c88a | 7219 | #ifdef AF_INET6 |
cd3520a4 JB |
7220 | DEFSYM (Qipv6, "ipv6"); |
7221 | #endif | |
7222 | DEFSYM (Qdatagram, "datagram"); | |
7223 | DEFSYM (Qseqpacket, "seqpacket"); | |
7224 | ||
7225 | DEFSYM (QCport, ":port"); | |
7226 | DEFSYM (QCspeed, ":speed"); | |
7227 | DEFSYM (QCprocess, ":process"); | |
7228 | ||
7229 | DEFSYM (QCbytesize, ":bytesize"); | |
7230 | DEFSYM (QCstopbits, ":stopbits"); | |
7231 | DEFSYM (QCparity, ":parity"); | |
7232 | DEFSYM (Qodd, "odd"); | |
7233 | DEFSYM (Qeven, "even"); | |
7234 | DEFSYM (QCflowcontrol, ":flowcontrol"); | |
7235 | DEFSYM (Qhw, "hw"); | |
7236 | DEFSYM (Qsw, "sw"); | |
7237 | DEFSYM (QCsummary, ":summary"); | |
7238 | ||
7239 | DEFSYM (Qreal, "real"); | |
7240 | DEFSYM (Qnetwork, "network"); | |
7241 | DEFSYM (Qserial, "serial"); | |
7242 | DEFSYM (QCbuffer, ":buffer"); | |
7243 | DEFSYM (QChost, ":host"); | |
7244 | DEFSYM (QCservice, ":service"); | |
7245 | DEFSYM (QClocal, ":local"); | |
7246 | DEFSYM (QCremote, ":remote"); | |
7247 | DEFSYM (QCcoding, ":coding"); | |
7248 | DEFSYM (QCserver, ":server"); | |
7249 | DEFSYM (QCnowait, ":nowait"); | |
7250 | DEFSYM (QCsentinel, ":sentinel"); | |
7251 | DEFSYM (QClog, ":log"); | |
7252 | DEFSYM (QCnoquery, ":noquery"); | |
7253 | DEFSYM (QCstop, ":stop"); | |
7254 | DEFSYM (QCoptions, ":options"); | |
7255 | DEFSYM (QCplist, ":plist"); | |
7256 | ||
7257 | DEFSYM (Qlast_nonmenu_event, "last-nonmenu-event"); | |
934e2a68 | 7258 | |
f388c88a | 7259 | staticpro (&Vprocess_alist); |
f388c88a | 7260 | staticpro (&deleted_pid_list); |
934e2a68 | 7261 | |
f388c88a | 7262 | #endif /* subprocesses */ |
6720a7fb | 7263 | |
cd3520a4 JB |
7264 | DEFSYM (QCname, ":name"); |
7265 | DEFSYM (QCtype, ":type"); | |
7266 | ||
7267 | DEFSYM (Qeuid, "euid"); | |
7268 | DEFSYM (Qegid, "egid"); | |
7269 | DEFSYM (Quser, "user"); | |
7270 | DEFSYM (Qgroup, "group"); | |
7271 | DEFSYM (Qcomm, "comm"); | |
7272 | DEFSYM (Qstate, "state"); | |
7273 | DEFSYM (Qppid, "ppid"); | |
7274 | DEFSYM (Qpgrp, "pgrp"); | |
7275 | DEFSYM (Qsess, "sess"); | |
7276 | DEFSYM (Qttname, "ttname"); | |
7277 | DEFSYM (Qtpgid, "tpgid"); | |
7278 | DEFSYM (Qminflt, "minflt"); | |
7279 | DEFSYM (Qmajflt, "majflt"); | |
7280 | DEFSYM (Qcminflt, "cminflt"); | |
7281 | DEFSYM (Qcmajflt, "cmajflt"); | |
7282 | DEFSYM (Qutime, "utime"); | |
7283 | DEFSYM (Qstime, "stime"); | |
7284 | DEFSYM (Qtime, "time"); | |
7285 | DEFSYM (Qcutime, "cutime"); | |
7286 | DEFSYM (Qcstime, "cstime"); | |
7287 | DEFSYM (Qctime, "ctime"); | |
1aa8d505 SM |
7288 | DEFSYM (Qinternal_default_process_sentinel, |
7289 | "internal-default-process-sentinel"); | |
7290 | DEFSYM (Qinternal_default_process_filter, | |
7291 | "internal-default-process-filter"); | |
cd3520a4 JB |
7292 | DEFSYM (Qpri, "pri"); |
7293 | DEFSYM (Qnice, "nice"); | |
7294 | DEFSYM (Qthcount, "thcount"); | |
7295 | DEFSYM (Qstart, "start"); | |
7296 | DEFSYM (Qvsize, "vsize"); | |
7297 | DEFSYM (Qrss, "rss"); | |
7298 | DEFSYM (Qetime, "etime"); | |
7299 | DEFSYM (Qpcpu, "pcpu"); | |
7300 | DEFSYM (Qpmem, "pmem"); | |
7301 | DEFSYM (Qargs, "args"); | |
9057ff80 | 7302 | |
29208e82 | 7303 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
fb7ada5f | 7304 | doc: /* Non-nil means delete processes immediately when they exit. |
f388c88a EZ |
7305 | A value of nil means don't delete them until `list-processes' is run. */); |
7306 | ||
7307 | delete_exited_processes = 1; | |
7308 | ||
462aa963 | 7309 | #ifdef subprocesses |
29208e82 | 7310 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7311 | doc: /* Control type of device used to communicate with subprocesses. |
7312 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7313 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7314 | then a pipe is used in any case. | |
7315 | The value takes effect when `start-process' is called. */); | |
7316 | Vprocess_connection_type = Qt; | |
7317 | ||
7318 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7319 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7320 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7321 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7322 | is read in very small blocks, potentially resulting in very poor performance. | |
7323 | This behavior can be remedied to some extent by setting this variable to a | |
7324 | non-nil value, as it will automatically delay reading from such processes, to | |
7325 | allow them to produce more output before Emacs tries to read it. | |
7326 | If the value is t, the delay is reset after each write to the process; any other | |
7327 | non-nil value means that the delay is not reset on write. | |
7328 | The variable takes effect when `start-process' is called. */); | |
7329 | Vprocess_adaptive_read_buffering = Qt; | |
7330 | #endif | |
7331 | ||
7332 | defsubr (&Sprocessp); | |
7333 | defsubr (&Sget_process); | |
7334 | defsubr (&Sdelete_process); | |
7335 | defsubr (&Sprocess_status); | |
7336 | defsubr (&Sprocess_exit_status); | |
7337 | defsubr (&Sprocess_id); | |
7338 | defsubr (&Sprocess_name); | |
7339 | defsubr (&Sprocess_tty_name); | |
7340 | defsubr (&Sprocess_command); | |
7341 | defsubr (&Sset_process_buffer); | |
7342 | defsubr (&Sprocess_buffer); | |
7343 | defsubr (&Sprocess_mark); | |
7344 | defsubr (&Sset_process_filter); | |
7345 | defsubr (&Sprocess_filter); | |
7346 | defsubr (&Sset_process_sentinel); | |
7347 | defsubr (&Sprocess_sentinel); | |
7348 | defsubr (&Sset_process_window_size); | |
7349 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7350 | defsubr (&Sset_process_query_on_exit_flag); | |
7351 | defsubr (&Sprocess_query_on_exit_flag); | |
7352 | defsubr (&Sprocess_contact); | |
7353 | defsubr (&Sprocess_plist); | |
7354 | defsubr (&Sset_process_plist); | |
f388c88a EZ |
7355 | defsubr (&Sprocess_list); |
7356 | defsubr (&Sstart_process); | |
f388c88a EZ |
7357 | defsubr (&Sserial_process_configure); |
7358 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7359 | defsubr (&Sset_network_process_option); |
7360 | defsubr (&Smake_network_process); | |
7361 | defsubr (&Sformat_network_address); | |
5e617bc2 | 7362 | #if defined (HAVE_NET_IF_H) |
f388c88a EZ |
7363 | #ifdef SIOCGIFCONF |
7364 | defsubr (&Snetwork_interface_list); | |
7365 | #endif | |
5e617bc2 | 7366 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
f388c88a EZ |
7367 | defsubr (&Snetwork_interface_info); |
7368 | #endif | |
5e617bc2 | 7369 | #endif /* defined (HAVE_NET_IF_H) */ |
f388c88a EZ |
7370 | #ifdef DATAGRAM_SOCKETS |
7371 | defsubr (&Sprocess_datagram_address); | |
7372 | defsubr (&Sset_process_datagram_address); | |
7373 | #endif | |
7374 | defsubr (&Saccept_process_output); | |
7375 | defsubr (&Sprocess_send_region); | |
7376 | defsubr (&Sprocess_send_string); | |
7377 | defsubr (&Sinterrupt_process); | |
7378 | defsubr (&Skill_process); | |
7379 | defsubr (&Squit_process); | |
7380 | defsubr (&Sstop_process); | |
7381 | defsubr (&Scontinue_process); | |
7382 | defsubr (&Sprocess_running_child_p); | |
7383 | defsubr (&Sprocess_send_eof); | |
7384 | defsubr (&Ssignal_process); | |
7385 | defsubr (&Swaiting_for_user_input_p); | |
7386 | defsubr (&Sprocess_type); | |
1aa8d505 SM |
7387 | defsubr (&Sinternal_default_process_sentinel); |
7388 | defsubr (&Sinternal_default_process_filter); | |
f388c88a EZ |
7389 | defsubr (&Sset_process_coding_system); |
7390 | defsubr (&Sprocess_coding_system); | |
7391 | defsubr (&Sset_process_filter_multibyte); | |
7392 | defsubr (&Sprocess_filter_multibyte_p); | |
7393 | ||
7394 | #endif /* subprocesses */ | |
7395 | ||
6720a7fb | 7396 | defsubr (&Sget_buffer_process); |
52a1b894 | 7397 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7398 | defsubr (&Slist_system_processes); |
a20878b6 | 7399 | defsubr (&Sprocess_attributes); |
6720a7fb | 7400 | } |