Commit | Line | Data |
---|---|---|
d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
95df8112 | 2 | |
acaf905b | 3 | Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2012 |
95df8112 | 4 | Free Software Foundation, Inc. |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
d0d6b7c5 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
d0d6b7c5 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d0d6b7c5 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
6a09a33b PE |
23 | |
24 | #define PROCESS_INLINE EXTERN_INLINE | |
25 | ||
d0d6b7c5 JB |
26 | #include <stdio.h> |
27 | #include <errno.h> | |
6c60eb9f | 28 | #include <sys/types.h> /* Some typedefs are used in sys/file.h. */ |
d0d6b7c5 JB |
29 | #include <sys/file.h> |
30 | #include <sys/stat.h> | |
93b4f699 | 31 | #include <unistd.h> |
e98d950b | 32 | #include <fcntl.h> |
e98d950b | 33 | |
0898ca10 JB |
34 | #include "lisp.h" |
35 | ||
f388c88a EZ |
36 | /* Only MS-DOS does not define `subprocesses'. */ |
37 | #ifdef subprocesses | |
38 | ||
d0d6b7c5 JB |
39 | #include <sys/socket.h> |
40 | #include <netdb.h> | |
41 | #include <netinet/in.h> | |
42 | #include <arpa/inet.h> | |
e690ca94 KS |
43 | |
44 | /* Are local (unix) sockets supported? */ | |
4624371d | 45 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
46 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
47 | #define AF_LOCAL AF_UNIX | |
48 | #endif | |
49 | #ifdef AF_LOCAL | |
50 | #define HAVE_LOCAL_SOCKETS | |
51 | #include <sys/un.h> | |
52 | #endif | |
53 | #endif | |
d0d6b7c5 | 54 | |
d0d6b7c5 | 55 | #include <sys/ioctl.h> |
5e617bc2 | 56 | #if defined (HAVE_NET_IF_H) |
32bc6709 DN |
57 | #include <net/if.h> |
58 | #endif /* HAVE_NET_IF_H */ | |
d0d6b7c5 | 59 | |
5e617bc2 | 60 | #if defined (HAVE_IFADDRS_H) |
377538cb JD |
61 | /* Must be after net/if.h */ |
62 | #include <ifaddrs.h> | |
63 | ||
64 | /* We only use structs from this header when we use getifaddrs. */ | |
5e617bc2 | 65 | #if defined (HAVE_NET_IF_DL_H) |
377538cb JD |
66 | #include <net/if_dl.h> |
67 | #endif | |
68 | ||
69 | #endif | |
70 | ||
d0d6b7c5 JB |
71 | #ifdef NEED_BSDTTY |
72 | #include <bsdtty.h> | |
73 | #endif | |
74 | ||
4a4bbad2 PE |
75 | #ifdef USG5_4 |
76 | # include <sys/stream.h> | |
77 | # include <sys/stropts.h> | |
78 | #endif | |
79 | ||
08116b48 CY |
80 | #ifdef HAVE_RES_INIT |
81 | #include <netinet/in.h> | |
82 | #include <arpa/nameser.h> | |
83 | #include <resolv.h> | |
84 | #endif | |
85 | ||
3d608a86 J |
86 | #ifdef HAVE_UTIL_H |
87 | #include <util.h> | |
88 | #endif | |
89 | ||
9bf58201 DN |
90 | #ifdef HAVE_PTY_H |
91 | #include <pty.h> | |
92 | #endif | |
93 | ||
f388c88a EZ |
94 | #endif /* subprocesses */ |
95 | ||
d0d6b7c5 | 96 | #include "systime.h" |
36ebaafa | 97 | #include "systty.h" |
d0d6b7c5 | 98 | |
d0d6b7c5 | 99 | #include "window.h" |
5bbf78c1 | 100 | #include "character.h" |
e5560ff7 | 101 | #include "buffer.h" |
0fa1789e | 102 | #include "coding.h" |
d0d6b7c5 | 103 | #include "process.h" |
428a555e | 104 | #include "frame.h" |
d0d6b7c5 JB |
105 | #include "termhooks.h" |
106 | #include "termopts.h" | |
107 | #include "commands.h" | |
3ec68006 | 108 | #include "keyboard.h" |
ececcbec | 109 | #include "blockinput.h" |
dfcf069d | 110 | #include "dispextern.h" |
e0016554 | 111 | #include "composite.h" |
30904ab7 | 112 | #include "atimer.h" |
f388c88a EZ |
113 | #include "sysselect.h" |
114 | #include "syssignal.h" | |
115 | #include "syswait.h" | |
8af55556 TZ |
116 | #ifdef HAVE_GNUTLS |
117 | #include "gnutls.h" | |
118 | #endif | |
d0d6b7c5 | 119 | |
17a2cbbd DC |
120 | #ifdef HAVE_WINDOW_SYSTEM |
121 | #include TERM_HEADER | |
122 | #endif /* HAVE_WINDOW_SYSTEM */ | |
123 | ||
0949d2b6 | 124 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 | 125 | #include "xgselect.h" |
0949d2b6 | 126 | #endif |
57507bf8 | 127 | |
a68089e4 EZ |
128 | #ifdef WINDOWSNT |
129 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
130 | EMACS_TIME *, void *); | |
131 | #endif | |
132 | ||
0b3d4a47 PE |
133 | /* This is for DOS_NT ports. FIXME: Remove this old portability cruft |
134 | by having DOS_NT ports implement waitpid instead of wait. Nowadays | |
135 | POSIXish hosts all define waitpid, WNOHANG, and WUNTRACED, as these | |
136 | have been standard since POSIX.1-1988. */ | |
20ef56db PE |
137 | #ifndef WNOHANG |
138 | # undef waitpid | |
139 | # define waitpid(pid, status, options) wait (status) | |
140 | #endif | |
141 | #ifndef WUNTRACED | |
142 | # define WUNTRACED 0 | |
143 | #endif | |
144 | ||
b8df54ff PE |
145 | /* Work around GCC 4.7.0 bug with strict overflow checking; see |
146 | <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>. | |
147 | These lines can be removed once the GCC bug is fixed. */ | |
148 | #if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__ | |
149 | # pragma GCC diagnostic ignored "-Wstrict-overflow" | |
150 | #endif | |
151 | ||
fdb183d6 DN |
152 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
153 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
154 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
155 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
156 | Lisp_Object QCname, QCtype; | |
157 | \f | |
158 | /* Non-zero if keyboard input is on hold, zero otherwise. */ | |
159 | ||
160 | static int kbd_is_on_hold; | |
161 | ||
fdb183d6 DN |
162 | /* Nonzero means don't run process sentinels. This is used |
163 | when exiting. */ | |
164 | int inhibit_sentinels; | |
165 | ||
f388c88a EZ |
166 | #ifdef subprocesses |
167 | ||
dd2281ae | 168 | Lisp_Object Qprocessp; |
955cbe7b PE |
169 | static Lisp_Object Qrun, Qstop, Qsignal; |
170 | static Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; | |
171 | Lisp_Object Qlocal; | |
172 | static Lisp_Object Qipv4, Qdatagram, Qseqpacket; | |
173 | static Lisp_Object Qreal, Qnetwork, Qserial; | |
e1652a86 | 174 | #ifdef AF_INET6 |
955cbe7b | 175 | static Lisp_Object Qipv6; |
e1652a86 | 176 | #endif |
955cbe7b PE |
177 | static Lisp_Object QCport, QCprocess; |
178 | Lisp_Object QCspeed; | |
d888760c GM |
179 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; |
180 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
955cbe7b PE |
181 | static Lisp_Object QCbuffer, QChost, QCservice; |
182 | static Lisp_Object QClocal, QCremote, QCcoding; | |
183 | static Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; | |
184 | static Lisp_Object QCsentinel, QClog, QCoptions, QCplist; | |
185 | static Lisp_Object Qlast_nonmenu_event; | |
e0f712ba | 186 | |
4d2b044c DA |
187 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
188 | #define NETCONN1_P(p) (EQ (p->type, Qnetwork)) | |
189 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
190 | #define SERIALCONN1_P(p) (EQ (p->type, Qserial)) | |
d0d6b7c5 | 191 | |
5f0929a7 RS |
192 | #ifndef HAVE_H_ERRNO |
193 | extern int h_errno; | |
194 | #endif | |
195 | ||
d0d6b7c5 | 196 | /* Number of events of change of status of a process. */ |
e4d81efc | 197 | static EMACS_INT process_tick; |
d0d6b7c5 | 198 | /* Number of events for which the user or sentinel has been notified. */ |
e4d81efc | 199 | static EMACS_INT update_tick; |
d0d6b7c5 | 200 | |
dd2a17ab KS |
201 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
202 | ||
82d6e50b | 203 | /* Only W32 has this, it really means that select can't take write mask. */ |
dd2a17ab KS |
204 | #ifdef BROKEN_NON_BLOCKING_CONNECT |
205 | #undef NON_BLOCKING_CONNECT | |
82d6e50b | 206 | #define SELECT_CANT_DO_WRITE_MASK |
dd2a17ab KS |
207 | #else |
208 | #ifndef NON_BLOCKING_CONNECT | |
dd2a17ab KS |
209 | #ifdef HAVE_SELECT |
210 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
211 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
212 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
213 | #define NON_BLOCKING_CONNECT | |
214 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
215 | #endif /* O_NONBLOCK || O_NDELAY */ | |
216 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
217 | #endif /* HAVE_SELECT */ | |
dd2a17ab KS |
218 | #endif /* NON_BLOCKING_CONNECT */ |
219 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
220 | ||
e690ca94 KS |
221 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
222 | this system. We need to read full packets, so we need a | |
223 | "non-destructive" select. So we require either native select, | |
224 | or emulation of select using FIONREAD. */ | |
225 | ||
4a4bbad2 PE |
226 | #ifndef BROKEN_DATAGRAM_SOCKETS |
227 | # if defined HAVE_SELECT || defined USABLE_FIONREAD | |
228 | # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE | |
229 | # define DATAGRAM_SOCKETS | |
230 | # endif | |
231 | # endif | |
232 | #endif | |
e690ca94 | 233 | |
f00c449b SM |
234 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
235 | # define HAVE_SEQPACKET | |
236 | #endif | |
237 | ||
6b61353c | 238 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
6b61353c KH |
239 | #define ADAPTIVE_READ_BUFFERING |
240 | #endif | |
6b61353c KH |
241 | |
242 | #ifdef ADAPTIVE_READ_BUFFERING | |
d35af63c | 243 | #define READ_OUTPUT_DELAY_INCREMENT (EMACS_TIME_RESOLUTION / 100) |
6b61353c KH |
244 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) |
245 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
246 | ||
db853b7a KS |
247 | /* Number of processes which have a non-zero read_output_delay, |
248 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
249 | |
250 | static int process_output_delay_count; | |
251 | ||
db853b7a | 252 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
253 | |
254 | static int process_output_skip; | |
255 | ||
6b61353c KH |
256 | #else |
257 | #define process_output_delay_count 0 | |
258 | #endif | |
259 | ||
40ccffa6 | 260 | static void create_process (Lisp_Object, char **, Lisp_Object); |
4a4bbad2 | 261 | #ifdef USABLE_SIGIO |
f57e2426 | 262 | static int keyboard_bit_set (SELECT_TYPE *); |
006c5daa | 263 | #endif |
f57e2426 J |
264 | static void deactivate_process (Lisp_Object); |
265 | static void status_notify (struct Lisp_Process *); | |
266 | static int read_process_output (Lisp_Object, int); | |
4d7e6e51 | 267 | static void handle_child_signal (int); |
f57e2426 | 268 | static void create_pty (Lisp_Object); |
41d03b9a | 269 | |
583dcae4 | 270 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 271 | to detect C-g. It isn't actually used when doing interrupt input. */ |
4d7e6e51 | 272 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
273 | #define POLL_FOR_INPUT |
274 | #endif | |
275 | ||
d3da34e0 JB |
276 | static Lisp_Object get_process (register Lisp_Object name); |
277 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 278 | |
f388c88a EZ |
279 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
280 | ||
281 | static SELECT_TYPE input_wait_mask; | |
282 | ||
994d9841 | 283 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
284 | |
285 | static SELECT_TYPE non_keyboard_wait_mask; | |
286 | ||
994d9841 | 287 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
288 | |
289 | static SELECT_TYPE non_process_wait_mask; | |
290 | ||
3fad2ad2 | 291 | /* Mask for selecting for write. */ |
994d9841 | 292 | |
3fad2ad2 | 293 | static SELECT_TYPE write_mask; |
994d9841 | 294 | |
bad49fc7 | 295 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
296 | /* Mask of bits indicating the descriptors that we wait for connect to |
297 | complete on. Once they complete, they are removed from this mask | |
298 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
299 | ||
300 | static SELECT_TYPE connect_wait_mask; | |
301 | ||
302 | /* Number of bits set in connect_wait_mask. */ | |
303 | static int num_pending_connects; | |
f388c88a | 304 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 305 | |
7d0e672e RS |
306 | /* The largest descriptor currently in use for a process object. */ |
307 | static int max_process_desc; | |
308 | ||
3fad2ad2 J |
309 | /* The largest descriptor currently in use for input. */ |
310 | static int max_input_desc; | |
994d9841 | 311 | |
d0d6b7c5 | 312 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
40ccffa6 | 313 | static Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
314 | |
315 | /* Alist of elements (NAME . PROCESS) */ | |
40ccffa6 | 316 | static Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
317 | |
318 | /* Buffered-ahead input char from process, indexed by channel. | |
319 | -1 means empty (no char is buffered). | |
320 | Used on sys V where the only way to tell if there is any | |
321 | output from the process is to read at least one char. | |
322 | Always -1 on systems that support FIONREAD. */ | |
323 | ||
40ccffa6 | 324 | static int proc_buffered_char[MAXDESC]; |
dd2281ae | 325 | |
0fa1789e | 326 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
327 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
328 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 329 | |
e690ca94 KS |
330 | #ifdef DATAGRAM_SOCKETS |
331 | /* Table of `partner address' for datagram sockets. */ | |
40ccffa6 | 332 | static struct sockaddr_and_len { |
e690ca94 KS |
333 | struct sockaddr *sa; |
334 | int len; | |
335 | } datagram_address[MAXDESC]; | |
336 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 337 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
338 | #else |
339 | #define DATAGRAM_CHAN_P(chan) (0) | |
340 | #define DATAGRAM_CONN_P(proc) (0) | |
341 | #endif | |
342 | ||
93b4f699 RS |
343 | /* Maximum number of bytes to send to a pty without an eof. */ |
344 | static int pty_max_bytes; | |
3b9a3dfa | 345 | |
6a09a33b | 346 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 347 | static void |
6a09a33b PE |
348 | pset_buffer (struct Lisp_Process *p, Lisp_Object val) |
349 | { | |
350 | p->buffer = val; | |
351 | } | |
b0ab8123 | 352 | static void |
6a09a33b PE |
353 | pset_command (struct Lisp_Process *p, Lisp_Object val) |
354 | { | |
355 | p->command = val; | |
356 | } | |
b0ab8123 | 357 | static void |
6a09a33b PE |
358 | pset_decode_coding_system (struct Lisp_Process *p, Lisp_Object val) |
359 | { | |
360 | p->decode_coding_system = val; | |
361 | } | |
b0ab8123 | 362 | static void |
6a09a33b PE |
363 | pset_decoding_buf (struct Lisp_Process *p, Lisp_Object val) |
364 | { | |
365 | p->decoding_buf = val; | |
366 | } | |
b0ab8123 | 367 | static void |
6a09a33b PE |
368 | pset_encode_coding_system (struct Lisp_Process *p, Lisp_Object val) |
369 | { | |
370 | p->encode_coding_system = val; | |
371 | } | |
b0ab8123 | 372 | static void |
6a09a33b PE |
373 | pset_encoding_buf (struct Lisp_Process *p, Lisp_Object val) |
374 | { | |
375 | p->encoding_buf = val; | |
376 | } | |
b0ab8123 | 377 | static void |
6a09a33b PE |
378 | pset_filter (struct Lisp_Process *p, Lisp_Object val) |
379 | { | |
380 | p->filter = val; | |
381 | } | |
b0ab8123 | 382 | static void |
6a09a33b PE |
383 | pset_log (struct Lisp_Process *p, Lisp_Object val) |
384 | { | |
385 | p->log = val; | |
386 | } | |
b0ab8123 | 387 | static void |
6a09a33b PE |
388 | pset_mark (struct Lisp_Process *p, Lisp_Object val) |
389 | { | |
390 | p->mark = val; | |
391 | } | |
b0ab8123 | 392 | static void |
6a09a33b PE |
393 | pset_name (struct Lisp_Process *p, Lisp_Object val) |
394 | { | |
395 | p->name = val; | |
396 | } | |
b0ab8123 | 397 | static void |
6a09a33b PE |
398 | pset_plist (struct Lisp_Process *p, Lisp_Object val) |
399 | { | |
400 | p->plist = val; | |
401 | } | |
b0ab8123 | 402 | static void |
6a09a33b PE |
403 | pset_sentinel (struct Lisp_Process *p, Lisp_Object val) |
404 | { | |
405 | p->sentinel = val; | |
406 | } | |
b0ab8123 | 407 | static void |
6a09a33b PE |
408 | pset_status (struct Lisp_Process *p, Lisp_Object val) |
409 | { | |
410 | p->status = val; | |
411 | } | |
b0ab8123 | 412 | static void |
6a09a33b PE |
413 | pset_tty_name (struct Lisp_Process *p, Lisp_Object val) |
414 | { | |
415 | p->tty_name = val; | |
416 | } | |
b0ab8123 | 417 | static void |
6a09a33b PE |
418 | pset_type (struct Lisp_Process *p, Lisp_Object val) |
419 | { | |
420 | p->type = val; | |
421 | } | |
b0ab8123 | 422 | static void |
6a09a33b PE |
423 | pset_write_queue (struct Lisp_Process *p, Lisp_Object val) |
424 | { | |
425 | p->write_queue = val; | |
426 | } | |
427 | ||
d0d6b7c5 | 428 | \f |
3fad2ad2 | 429 | |
40ccffa6 | 430 | static struct fd_callback_data |
3fad2ad2 J |
431 | { |
432 | fd_callback func; | |
433 | void *data; | |
434 | #define FOR_READ 1 | |
435 | #define FOR_WRITE 2 | |
436 | int condition; /* mask of the defines above. */ | |
437 | } fd_callback_info[MAXDESC]; | |
438 | ||
439 | ||
440 | /* Add a file descriptor FD to be monitored for when read is possible. | |
441 | When read is possible, call FUNC with argument DATA. */ | |
442 | ||
443 | void | |
444 | add_read_fd (int fd, fd_callback func, void *data) | |
445 | { | |
a54e2c05 | 446 | eassert (fd < MAXDESC); |
3fad2ad2 J |
447 | add_keyboard_wait_descriptor (fd); |
448 | ||
449 | fd_callback_info[fd].func = func; | |
450 | fd_callback_info[fd].data = data; | |
451 | fd_callback_info[fd].condition |= FOR_READ; | |
452 | } | |
453 | ||
454 | /* Stop monitoring file descriptor FD for when read is possible. */ | |
455 | ||
456 | void | |
457 | delete_read_fd (int fd) | |
458 | { | |
a54e2c05 | 459 | eassert (fd < MAXDESC); |
3fad2ad2 J |
460 | delete_keyboard_wait_descriptor (fd); |
461 | ||
462 | fd_callback_info[fd].condition &= ~FOR_READ; | |
463 | if (fd_callback_info[fd].condition == 0) | |
464 | { | |
465 | fd_callback_info[fd].func = 0; | |
466 | fd_callback_info[fd].data = 0; | |
467 | } | |
468 | } | |
469 | ||
470 | /* Add a file descriptor FD to be monitored for when write is possible. | |
471 | When write is possible, call FUNC with argument DATA. */ | |
472 | ||
473 | void | |
474 | add_write_fd (int fd, fd_callback func, void *data) | |
475 | { | |
a54e2c05 | 476 | eassert (fd < MAXDESC); |
3fad2ad2 J |
477 | FD_SET (fd, &write_mask); |
478 | if (fd > max_input_desc) | |
479 | max_input_desc = fd; | |
480 | ||
481 | fd_callback_info[fd].func = func; | |
482 | fd_callback_info[fd].data = data; | |
483 | fd_callback_info[fd].condition |= FOR_WRITE; | |
484 | } | |
485 | ||
486 | /* Stop monitoring file descriptor FD for when write is possible. */ | |
487 | ||
488 | void | |
489 | delete_write_fd (int fd) | |
490 | { | |
491 | int lim = max_input_desc; | |
492 | ||
a54e2c05 | 493 | eassert (fd < MAXDESC); |
3fad2ad2 J |
494 | FD_CLR (fd, &write_mask); |
495 | fd_callback_info[fd].condition &= ~FOR_WRITE; | |
496 | if (fd_callback_info[fd].condition == 0) | |
497 | { | |
498 | fd_callback_info[fd].func = 0; | |
499 | fd_callback_info[fd].data = 0; | |
500 | ||
501 | if (fd == max_input_desc) | |
502 | for (fd = lim; fd >= 0; fd--) | |
503 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) | |
504 | { | |
505 | max_input_desc = fd; | |
506 | break; | |
507 | } | |
51b59d79 | 508 | |
3fad2ad2 J |
509 | } |
510 | } | |
511 | ||
512 | \f | |
d0d6b7c5 JB |
513 | /* Compute the Lisp form of the process status, p->status, from |
514 | the numeric status that was returned by `wait'. */ | |
515 | ||
bba104c1 | 516 | static Lisp_Object status_convert (int); |
f9738840 | 517 | |
ff6daed3 | 518 | static void |
d3da34e0 | 519 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 520 | { |
6bfd98e7 | 521 | eassert (p->raw_status_new); |
6a09a33b | 522 | pset_status (p, status_convert (p->raw_status)); |
6bfd98e7 | 523 | p->raw_status_new = 0; |
d0d6b7c5 JB |
524 | } |
525 | ||
177c0ea7 | 526 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
527 | the list that we use internally. */ |
528 | ||
ff6daed3 | 529 | static Lisp_Object |
bba104c1 | 530 | status_convert (int w) |
d0d6b7c5 JB |
531 | { |
532 | if (WIFSTOPPED (w)) | |
533 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
534 | else if (WIFEXITED (w)) | |
13294f95 | 535 | return Fcons (Qexit, Fcons (make_number (WEXITSTATUS (w)), |
d0d6b7c5 JB |
536 | WCOREDUMP (w) ? Qt : Qnil)); |
537 | else if (WIFSIGNALED (w)) | |
538 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
539 | WCOREDUMP (w) ? Qt : Qnil)); | |
540 | else | |
541 | return Qrun; | |
542 | } | |
543 | ||
544 | /* Given a status-list, extract the three pieces of information | |
545 | and store them individually through the three pointers. */ | |
546 | ||
ff6daed3 | 547 | static void |
d3da34e0 | 548 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, int *coredump) |
d0d6b7c5 JB |
549 | { |
550 | Lisp_Object tem; | |
551 | ||
bcd69aea | 552 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
553 | { |
554 | *symbol = l; | |
555 | *code = 0; | |
556 | *coredump = 0; | |
557 | } | |
558 | else | |
559 | { | |
70949dac KR |
560 | *symbol = XCAR (l); |
561 | tem = XCDR (l); | |
562 | *code = XFASTINT (XCAR (tem)); | |
563 | tem = XCDR (tem); | |
d0d6b7c5 JB |
564 | *coredump = !NILP (tem); |
565 | } | |
566 | } | |
567 | ||
568 | /* Return a string describing a process status list. */ | |
569 | ||
116c423c | 570 | static Lisp_Object |
d3da34e0 | 571 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 572 | { |
4d2b044c | 573 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
574 | Lisp_Object symbol; |
575 | int code, coredump; | |
576 | Lisp_Object string, string2; | |
577 | ||
578 | decode_status (status, &symbol, &code, &coredump); | |
579 | ||
580 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
581 | { | |
aa1ba90e | 582 | char const *signame; |
ca9c0567 | 583 | synchronize_system_messages_locale (); |
68c45bf0 | 584 | signame = strsignal (code); |
b97ad9ea | 585 | if (signame == 0) |
66bd43d1 KH |
586 | string = build_string ("unknown"); |
587 | else | |
588 | { | |
589 | int c1, c2; | |
590 | ||
d7ea76b4 | 591 | string = build_unibyte_string (signame); |
66bd43d1 KH |
592 | if (! NILP (Vlocale_coding_system)) |
593 | string = (code_convert_string_norecord | |
594 | (string, Vlocale_coding_system, 0)); | |
42a5b22f | 595 | c1 = STRING_CHAR (SDATA (string)); |
5da9919f | 596 | c2 = downcase (c1); |
66bd43d1 | 597 | if (c1 != c2) |
4735b74e | 598 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 599 | } |
d0d6b7c5 | 600 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
601 | return concat2 (string, string2); |
602 | } | |
603 | else if (EQ (symbol, Qexit)) | |
604 | { | |
116c423c KS |
605 | if (NETCONN1_P (p)) |
606 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
607 | if (code == 0) |
608 | return build_string ("finished\n"); | |
f2980264 | 609 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 610 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
611 | return concat3 (build_string ("exited abnormally with code "), |
612 | string, string2); | |
d0d6b7c5 | 613 | } |
dd2a17ab KS |
614 | else if (EQ (symbol, Qfailed)) |
615 | { | |
616 | string = Fnumber_to_string (make_number (code)); | |
617 | string2 = build_string ("\n"); | |
e690ca94 KS |
618 | return concat3 (build_string ("failed with code "), |
619 | string, string2); | |
dd2a17ab | 620 | } |
d0d6b7c5 JB |
621 | else |
622 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
623 | } | |
624 | \f | |
625 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 626 | |
9bf58201 DN |
627 | /* The file name of the pty opened by allocate_pty. */ |
628 | static char pty_name[24]; | |
629 | ||
875e6b94 KH |
630 | /* Open an available pty, returning a file descriptor. |
631 | Return -1 on failure. | |
632 | The file name of the terminal corresponding to the pty | |
633 | is left in the variable pty_name. */ | |
634 | ||
ff6daed3 | 635 | static int |
d3da34e0 | 636 | allocate_pty (void) |
d0d6b7c5 | 637 | { |
d0d6b7c5 JB |
638 | int fd; |
639 | ||
640 | #ifdef PTY_ITERATION | |
641 | PTY_ITERATION | |
642 | #else | |
be02381c | 643 | register int c, i; |
d0d6b7c5 JB |
644 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) |
645 | for (i = 0; i < 16; i++) | |
646 | #endif | |
647 | { | |
648 | #ifdef PTY_NAME_SPRINTF | |
649 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
650 | #else |
651 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
652 | #endif /* no PTY_NAME_SPRINTF */ |
653 | ||
4d7c105e RS |
654 | #ifdef PTY_OPEN |
655 | PTY_OPEN; | |
656 | #else /* no PTY_OPEN */ | |
34967d0f | 657 | { |
34967d0f SM |
658 | # ifdef O_NONBLOCK |
659 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
660 | # else | |
661 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
662 | # endif | |
34967d0f | 663 | } |
4d7c105e | 664 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
665 | |
666 | if (fd >= 0) | |
667 | { | |
668 | /* check to make certain that both sides are available | |
669 | this avoids a nasty yet stupid bug in rlogins */ | |
670 | #ifdef PTY_TTY_NAME_SPRINTF | |
671 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 672 | #else |
63136da6 | 673 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 674 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
675 | if (access (pty_name, 6) != 0) |
676 | { | |
68c45bf0 | 677 | emacs_close (fd); |
132d0475 | 678 | # ifndef __sgi |
d0d6b7c5 | 679 | continue; |
34967d0f | 680 | # else |
d0d6b7c5 | 681 | return -1; |
132d0475 | 682 | # endif /* __sgi */ |
d0d6b7c5 | 683 | } |
d0d6b7c5 JB |
684 | setup_pty (fd); |
685 | return fd; | |
686 | } | |
687 | } | |
688 | return -1; | |
689 | } | |
690 | #endif /* HAVE_PTYS */ | |
691 | \f | |
ff6daed3 | 692 | static Lisp_Object |
d3da34e0 | 693 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
694 | { |
695 | register Lisp_Object val, tem, name1; | |
696 | register struct Lisp_Process *p; | |
31c286f7 PE |
697 | char suffix[sizeof "<>" + INT_STRLEN_BOUND (printmax_t)]; |
698 | printmax_t i; | |
d0d6b7c5 | 699 | |
98423852 | 700 | p = allocate_process (); |
62efea5e DA |
701 | /* Initialize Lisp data. Note that allocate_process initializes all |
702 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
6a09a33b PE |
703 | pset_status (p, Qrun); |
704 | pset_mark (p, Fmake_marker ()); | |
d0d6b7c5 | 705 | |
62efea5e DA |
706 | /* Initialize non-Lisp data. Note that allocate_process zeroes out all |
707 | non-Lisp data, so do it only for slots which should not be zero. */ | |
708 | p->infd = -1; | |
709 | p->outfd = -1; | |
6b61353c | 710 | |
8af55556 TZ |
711 | #ifdef HAVE_GNUTLS |
712 | p->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
713 | #endif | |
714 | ||
d0d6b7c5 JB |
715 | /* If name is already in use, modify it until it is unused. */ |
716 | ||
717 | name1 = name; | |
718 | for (i = 1; ; i++) | |
719 | { | |
720 | tem = Fget_process (name1); | |
721 | if (NILP (tem)) break; | |
a8290ec3 | 722 | name1 = concat2 (name, make_formatted_string (suffix, "<%"pMd">", i)); |
d0d6b7c5 JB |
723 | } |
724 | name = name1; | |
6a09a33b | 725 | pset_name (p, name); |
23d6bb9c | 726 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
727 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
728 | return val; | |
729 | } | |
730 | ||
ff6daed3 | 731 | static void |
d3da34e0 | 732 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
733 | { |
734 | register Lisp_Object pair; | |
735 | ||
736 | pair = Frassq (proc, Vprocess_alist); | |
737 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
738 | |
739 | deactivate_process (proc); | |
740 | } | |
03f04413 | 741 | |
d0d6b7c5 JB |
742 | \f |
743 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 744 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 745 | (Lisp_Object object) |
d0d6b7c5 | 746 | { |
4ee3e309 | 747 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
748 | } |
749 | ||
750 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 751 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 752 | (register Lisp_Object name) |
d0d6b7c5 | 753 | { |
bcd69aea | 754 | if (PROCESSP (name)) |
d0d6b7c5 | 755 | return name; |
b7826503 | 756 | CHECK_STRING (name); |
d0d6b7c5 JB |
757 | return Fcdr (Fassoc (name, Vprocess_alist)); |
758 | } | |
759 | ||
ebb9e16f JB |
760 | /* This is how commands for the user decode process arguments. It |
761 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
762 | Buffers denote the first process in the buffer, and nil denotes the | |
763 | current buffer. */ | |
d0d6b7c5 | 764 | |
77b221b1 | 765 | static Lisp_Object |
d3da34e0 | 766 | get_process (register Lisp_Object name) |
d0d6b7c5 | 767 | { |
1619761d KH |
768 | register Lisp_Object proc, obj; |
769 | if (STRINGP (name)) | |
770 | { | |
771 | obj = Fget_process (name); | |
772 | if (NILP (obj)) | |
773 | obj = Fget_buffer (name); | |
774 | if (NILP (obj)) | |
d5db4077 | 775 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
776 | } |
777 | else if (NILP (name)) | |
778 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 779 | else |
1619761d KH |
780 | obj = name; |
781 | ||
782 | /* Now obj should be either a buffer object or a process object. | |
783 | */ | |
784 | if (BUFFERP (obj)) | |
d0d6b7c5 | 785 | { |
1619761d | 786 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 787 | if (NILP (proc)) |
4b4deea2 | 788 | error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj), name))); |
d0d6b7c5 | 789 | } |
d0d6b7c5 | 790 | else |
1619761d | 791 | { |
b7826503 | 792 | CHECK_PROCESS (obj); |
1619761d KH |
793 | proc = obj; |
794 | } | |
795 | return proc; | |
d0d6b7c5 JB |
796 | } |
797 | ||
a5cfdda8 KS |
798 | |
799 | #ifdef SIGCHLD | |
800 | /* Fdelete_process promises to immediately forget about the process, but in | |
801 | reality, Emacs needs to remember those processes until they have been | |
0b3d4a47 PE |
802 | treated by the SIGCHLD handler and waitpid has been invoked on them; |
803 | otherwise they might fill up the kernel's process table. */ | |
a5cfdda8 KS |
804 | static Lisp_Object deleted_pid_list; |
805 | #endif | |
806 | ||
d0d6b7c5 | 807 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
808 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
809 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
810 | nil, indicating the current buffer's process. */) | |
5842a27b | 811 | (register Lisp_Object process) |
d0d6b7c5 | 812 | { |
ff6daed3 KS |
813 | register struct Lisp_Process *p; |
814 | ||
4ee3e309 | 815 | process = get_process (process); |
ff6daed3 KS |
816 | p = XPROCESS (process); |
817 | ||
6bfd98e7 | 818 | p->raw_status_new = 0; |
d888760c | 819 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 820 | { |
6a09a33b | 821 | pset_status (p, Fcons (Qexit, Fcons (make_number (0), Qnil))); |
60f0fb11 | 822 | p->tick = ++process_tick; |
ff6daed3 | 823 | status_notify (p); |
e42bdf01 | 824 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 825 | } |
60f0fb11 | 826 | else if (p->infd >= 0) |
d0d6b7c5 | 827 | { |
a5cfdda8 KS |
828 | #ifdef SIGCHLD |
829 | Lisp_Object symbol; | |
d311d28c | 830 | pid_t pid = p->pid; |
a5cfdda8 KS |
831 | |
832 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 833 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
834 | /* GC treated elements set to nil. */ |
835 | Fdelq (Qnil, deleted_pid_list)); | |
836 | /* If the process has already signaled, remove it from the list. */ | |
837 | if (p->raw_status_new) | |
838 | update_status (p); | |
4d2b044c DA |
839 | symbol = p->status; |
840 | if (CONSP (p->status)) | |
841 | symbol = XCAR (p->status); | |
a5cfdda8 | 842 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) |
29ed4d51 CY |
843 | deleted_pid_list |
844 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
845 | else |
846 | #endif | |
847 | { | |
848 | Fkill_process (process, Qnil); | |
20ef56db PE |
849 | /* Do this now, since remove_process will make the |
850 | SIGCHLD handler do nothing. */ | |
6a09a33b | 851 | pset_status (p, Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil))); |
60f0fb11 | 852 | p->tick = ++process_tick; |
a5cfdda8 | 853 | status_notify (p); |
e42bdf01 | 854 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 855 | } |
d0d6b7c5 | 856 | } |
4ee3e309 | 857 | remove_process (process); |
d0d6b7c5 JB |
858 | return Qnil; |
859 | } | |
860 | \f | |
861 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
862 | doc: /* Return the status of PROCESS. |
863 | The returned value is one of the following symbols: | |
864 | run -- for a process that is running. | |
865 | stop -- for a process stopped but continuable. | |
866 | exit -- for a process that has exited. | |
867 | signal -- for a process that has got a fatal signal. | |
868 | open -- for a network stream connection that is open. | |
e690ca94 | 869 | listen -- for a network stream server that is listening. |
fdb82f93 | 870 | closed -- for a network stream connection that is closed. |
e4984112 KS |
871 | connect -- when waiting for a non-blocking connection to complete. |
872 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
873 | nil -- if arg is a process name and no such process exists. |
874 | PROCESS may be a process, a buffer, the name of a process, or | |
875 | nil, indicating the current buffer's process. */) | |
5842a27b | 876 | (register Lisp_Object process) |
d0d6b7c5 JB |
877 | { |
878 | register struct Lisp_Process *p; | |
879 | register Lisp_Object status; | |
343f4114 | 880 | |
4ee3e309 EN |
881 | if (STRINGP (process)) |
882 | process = Fget_process (process); | |
343f4114 | 883 | else |
4ee3e309 | 884 | process = get_process (process); |
343f4114 | 885 | |
4ee3e309 EN |
886 | if (NILP (process)) |
887 | return process; | |
343f4114 | 888 | |
4ee3e309 | 889 | p = XPROCESS (process); |
6bfd98e7 | 890 | if (p->raw_status_new) |
d0d6b7c5 | 891 | update_status (p); |
4d2b044c | 892 | status = p->status; |
bcd69aea | 893 | if (CONSP (status)) |
70949dac | 894 | status = XCAR (status); |
d888760c | 895 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 896 | { |
e690ca94 | 897 | if (EQ (status, Qexit)) |
d0d6b7c5 | 898 | status = Qclosed; |
4d2b044c | 899 | else if (EQ (p->command, Qt)) |
e690ca94 KS |
900 | status = Qstop; |
901 | else if (EQ (status, Qrun)) | |
902 | status = Qopen; | |
d0d6b7c5 JB |
903 | } |
904 | return status; | |
905 | } | |
906 | ||
907 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
908 | 1, 1, 0, | |
fdb82f93 PJ |
909 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
910 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 911 | (register Lisp_Object process) |
d0d6b7c5 | 912 | { |
b7826503 | 913 | CHECK_PROCESS (process); |
6bfd98e7 | 914 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 | 915 | update_status (XPROCESS (process)); |
4d2b044c DA |
916 | if (CONSP (XPROCESS (process)->status)) |
917 | return XCAR (XCDR (XPROCESS (process)->status)); | |
d0d6b7c5 JB |
918 | return make_number (0); |
919 | } | |
920 | ||
921 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 922 | doc: /* Return the process id of PROCESS. |
f3d9532b | 923 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 924 | For a network connection, this value is nil. */) |
5842a27b | 925 | (register Lisp_Object process) |
d0d6b7c5 | 926 | { |
d311d28c | 927 | pid_t pid; |
d30fe779 | 928 | |
b7826503 | 929 | CHECK_PROCESS (process); |
d30fe779 EZ |
930 | pid = XPROCESS (process)->pid; |
931 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
932 | } |
933 | ||
934 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
935 | doc: /* Return the name of PROCESS, as a string. |
936 | This is the name of the program invoked in PROCESS, | |
937 | possibly modified to make it unique among process names. */) | |
5842a27b | 938 | (register Lisp_Object process) |
d0d6b7c5 | 939 | { |
b7826503 | 940 | CHECK_PROCESS (process); |
4d2b044c | 941 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
942 | } |
943 | ||
944 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
945 | doc: /* Return the command that was executed to start PROCESS. |
946 | This is a list of strings, the first string being the program executed | |
947 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
948 | For a network or serial process, this is nil (process is running) or t |
949 | \(process is stopped). */) | |
5842a27b | 950 | (register Lisp_Object process) |
d0d6b7c5 | 951 | { |
b7826503 | 952 | CHECK_PROCESS (process); |
4d2b044c | 953 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
954 | } |
955 | ||
3b9a3dfa | 956 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
957 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
958 | This is the terminal that the process itself reads and writes on, | |
959 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 960 | (register Lisp_Object process) |
3b9a3dfa | 961 | { |
b7826503 | 962 | CHECK_PROCESS (process); |
4d2b044c | 963 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
964 | } |
965 | ||
d0d6b7c5 | 966 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 | 967 | 2, 2, 0, |
76147d94 DD |
968 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). |
969 | Return BUFFER. */) | |
5842a27b | 970 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 971 | { |
e690ca94 KS |
972 | struct Lisp_Process *p; |
973 | ||
b7826503 | 974 | CHECK_PROCESS (process); |
d0d6b7c5 | 975 | if (!NILP (buffer)) |
b7826503 | 976 | CHECK_BUFFER (buffer); |
e690ca94 | 977 | p = XPROCESS (process); |
6a09a33b | 978 | pset_buffer (p, buffer); |
d888760c | 979 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 980 | pset_childp (p, Fplist_put (p->childp, QCbuffer, buffer)); |
03f04413 | 981 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
982 | return buffer; |
983 | } | |
984 | ||
985 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
986 | 1, 1, 0, |
987 | doc: /* Return the buffer PROCESS is associated with. | |
988 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 989 | (register Lisp_Object process) |
d0d6b7c5 | 990 | { |
b7826503 | 991 | CHECK_PROCESS (process); |
4d2b044c | 992 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
993 | } |
994 | ||
995 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
996 | 1, 1, 0, |
997 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 998 | (register Lisp_Object process) |
d0d6b7c5 | 999 | { |
b7826503 | 1000 | CHECK_PROCESS (process); |
4d2b044c | 1001 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
1002 | } |
1003 | ||
1004 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
1005 | 2, 2, 0, |
1006 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 1007 | A value of t means stop accepting output from the process. |
3452df9e KS |
1008 | |
1009 | When a process has a filter, its buffer is not used for output. | |
1010 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 1011 | passed to the filter. |
3452df9e | 1012 | |
fdb82f93 | 1013 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
1014 | The string argument is normally a multibyte string, except: |
1015 | - if the process' input coding system is no-conversion or raw-text, | |
1016 | it is a unibyte string (the non-converted input), or else | |
1017 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
1018 | string (the result of converting the decoded input multibyte | |
1019 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 1020 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 1021 | { |
471f86b9 | 1022 | struct Lisp_Process *p; |
177c0ea7 | 1023 | |
b7826503 | 1024 | CHECK_PROCESS (process); |
471f86b9 GM |
1025 | p = XPROCESS (process); |
1026 | ||
1027 | /* Don't signal an error if the process' input file descriptor | |
1028 | is closed. This could make debugging Lisp more difficult, | |
1029 | for example when doing something like | |
1030 | ||
1031 | (setq process (start-process ...)) | |
1032 | (debug) | |
1033 | (set-process-filter process ...) */ | |
177c0ea7 | 1034 | |
60f0fb11 | 1035 | if (p->infd >= 0) |
a69281ff | 1036 | { |
4d2b044c | 1037 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 1038 | { |
60f0fb11 SM |
1039 | FD_CLR (p->infd, &input_wait_mask); |
1040 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1041 | } |
4d2b044c | 1042 | else if (EQ (p->filter, Qt) |
d888760c | 1043 | /* Network or serial process not stopped: */ |
4d2b044c | 1044 | && !EQ (p->command, Qt)) |
471f86b9 | 1045 | { |
60f0fb11 SM |
1046 | FD_SET (p->infd, &input_wait_mask); |
1047 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1048 | } |
a69281ff | 1049 | } |
177c0ea7 | 1050 | |
6a09a33b | 1051 | pset_filter (p, filter); |
d888760c | 1052 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1053 | pset_childp (p, Fplist_put (p->childp, QCfilter, filter)); |
03f04413 | 1054 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1055 | return filter; |
1056 | } | |
1057 | ||
1058 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1059 | 1, 1, 0, |
1060 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1061 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 1062 | (register Lisp_Object process) |
d0d6b7c5 | 1063 | { |
b7826503 | 1064 | CHECK_PROCESS (process); |
4d2b044c | 1065 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1066 | } |
1067 | ||
1068 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1069 | 2, 2, 0, |
1070 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1071 | The sentinel is called as a function when the process changes state. | |
1072 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 1073 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1074 | { |
6b61353c KH |
1075 | struct Lisp_Process *p; |
1076 | ||
b7826503 | 1077 | CHECK_PROCESS (process); |
6b61353c KH |
1078 | p = XPROCESS (process); |
1079 | ||
6a09a33b | 1080 | pset_sentinel (p, sentinel); |
d888760c | 1081 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1082 | pset_childp (p, Fplist_put (p->childp, QCsentinel, sentinel)); |
d0d6b7c5 JB |
1083 | return sentinel; |
1084 | } | |
1085 | ||
1086 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1087 | 1, 1, 0, |
1088 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1089 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 1090 | (register Lisp_Object process) |
d0d6b7c5 | 1091 | { |
b7826503 | 1092 | CHECK_PROCESS (process); |
4d2b044c | 1093 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1094 | } |
1095 | ||
396df322 | 1096 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1097 | Sset_process_window_size, 3, 3, 0, |
1098 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1099 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1100 | { |
b7826503 | 1101 | CHECK_PROCESS (process); |
af5a5a98 AS |
1102 | CHECK_RANGED_INTEGER (height, 0, INT_MAX); |
1103 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); | |
177c0ea7 | 1104 | |
60f0fb11 SM |
1105 | if (XPROCESS (process)->infd < 0 |
1106 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1107 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1108 | return Qnil; |
1109 | else | |
1110 | return Qt; | |
1111 | } | |
1112 | ||
52a1b894 | 1113 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1114 | Fset_process_inherit_coding_system_flag, |
1115 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1116 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1117 | If the second argument FLAG is non-nil, then the variable | |
1118 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1119 | will be bound to the value of the coding system used to decode | |
1120 | the process output. | |
1121 | ||
1122 | This is useful when the coding system specified for the process buffer | |
1123 | leaves either the character code conversion or the end-of-line conversion | |
1124 | unspecified, or if the coding system used to decode the process output | |
1125 | is more appropriate for saving the process buffer. | |
1126 | ||
1127 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1128 | starting the process is an alternative way of setting the inherit flag | |
016a35df GM |
1129 | for the process which will run. |
1130 | ||
1131 | This function returns FLAG. */) | |
5842a27b | 1132 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1133 | { |
b7826503 | 1134 | CHECK_PROCESS (process); |
60f0fb11 | 1135 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1136 | return flag; |
1137 | } | |
1138 | ||
e690ca94 KS |
1139 | DEFUN ("set-process-query-on-exit-flag", |
1140 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1141 | 2, 2, 0, | |
1142 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1143 | If the second argument FLAG is non-nil, Emacs will query the user before |
016a35df GM |
1144 | exiting or killing a buffer if PROCESS is running. This function |
1145 | returns FLAG. */) | |
5842a27b | 1146 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1147 | { |
b7826503 | 1148 | CHECK_PROCESS (process); |
60f0fb11 | 1149 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1150 | return flag; |
d0d6b7c5 | 1151 | } |
312c9964 | 1152 | |
e690ca94 KS |
1153 | DEFUN ("process-query-on-exit-flag", |
1154 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1155 | 1, 1, 0, |
f3d9532b | 1156 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1157 | (register Lisp_Object process) |
de282a05 | 1158 | { |
b7826503 | 1159 | CHECK_PROCESS (process); |
60f0fb11 | 1160 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1161 | } |
1162 | ||
e690ca94 KS |
1163 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, |
1164 | 1, 2, 0, | |
1165 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1166 | For a network or serial connection, the value depends on the optional |
1167 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1168 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1169 | connection. If KEY is t, the complete contact information for the | |
1170 | connection is returned, else the specific value for the keyword KEY is | |
1171 | returned. See `make-network-process' or `make-serial-process' for a | |
1172 | list of keywords. */) | |
5842a27b | 1173 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1174 | { |
1175 | Lisp_Object contact; | |
1176 | ||
1177 | CHECK_PROCESS (process); | |
4d2b044c | 1178 | contact = XPROCESS (process)->childp; |
e690ca94 KS |
1179 | |
1180 | #ifdef DATAGRAM_SOCKETS | |
1181 | if (DATAGRAM_CONN_P (process) | |
1182 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1183 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1184 | Fprocess_datagram_address (process)); |
1185 | #endif | |
1186 | ||
d888760c | 1187 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1188 | return contact; |
d888760c | 1189 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1190 | return Fcons (Fplist_get (contact, QChost), |
1191 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1192 | if (NILP (key) && SERIALCONN_P (process)) |
1193 | return Fcons (Fplist_get (contact, QCport), | |
1194 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1195 | return Fplist_get (contact, key); |
de282a05 RS |
1196 | } |
1197 | ||
faa7db08 KS |
1198 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1199 | 1, 1, 0, | |
1200 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1201 | (register Lisp_Object process) |
365aee82 | 1202 | { |
ac4a7584 | 1203 | CHECK_PROCESS (process); |
4d2b044c | 1204 | return XPROCESS (process)->plist; |
ac4a7584 | 1205 | } |
365aee82 | 1206 | |
faa7db08 KS |
1207 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1208 | 2, 2, 0, | |
26a086c6 | 1209 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1210 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1211 | { |
365aee82 | 1212 | CHECK_PROCESS (process); |
faa7db08 | 1213 | CHECK_LIST (plist); |
365aee82 | 1214 | |
6a09a33b | 1215 | pset_plist (XPROCESS (process), plist); |
26a086c6 | 1216 | return plist; |
365aee82 KS |
1217 | } |
1218 | ||
312c9964 RS |
1219 | #if 0 /* Turned off because we don't currently record this info |
1220 | in the process. Perhaps add it. */ | |
1221 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1222 | doc: /* Return the connection type of PROCESS. |
1223 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1224 | a socket connection. */) | |
5842a27b | 1225 | (Lisp_Object process) |
312c9964 | 1226 | { |
4d2b044c | 1227 | return XPROCESS (process)->type; |
312c9964 RS |
1228 | } |
1229 | #endif | |
2a7bb882 | 1230 | |
d888760c GM |
1231 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1232 | doc: /* Return the connection type of PROCESS. | |
1233 | The value is either the symbol `real', `network', or `serial'. | |
1234 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1235 | nil, indicating the current buffer's process. */) | |
5842a27b | 1236 | (Lisp_Object process) |
d888760c GM |
1237 | { |
1238 | Lisp_Object proc; | |
1239 | proc = get_process (process); | |
4d2b044c | 1240 | return XPROCESS (proc)->type; |
d888760c | 1241 | } |
991234f0 | 1242 | |
991234f0 | 1243 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1244 | 1, 2, 0, |
991234f0 | 1245 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1246 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1247 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1248 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1249 | number in the string, even when present in ADDRESS. |
1250 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1251 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1252 | { |
991234f0 KS |
1253 | if (NILP (address)) |
1254 | return Qnil; | |
1255 | ||
1256 | if (STRINGP (address)) /* AF_LOCAL */ | |
1257 | return address; | |
1258 | ||
e1652a86 | 1259 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1260 | { |
1261 | register struct Lisp_Vector *p = XVECTOR (address); | |
d311d28c | 1262 | ptrdiff_t size = p->header.size; |
ded83665 | 1263 | Lisp_Object args[10]; |
0dccee41 | 1264 | int nargs, i; |
991234f0 | 1265 | |
eab3844f | 1266 | if (size == 4 || (size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1267 | { |
1268 | args[0] = build_string ("%d.%d.%d.%d"); | |
1269 | nargs = 4; | |
1270 | } | |
eab3844f | 1271 | else if (size == 5) |
0dccee41 KS |
1272 | { |
1273 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1274 | nargs = 5; | |
1275 | } | |
eab3844f | 1276 | else if (size == 8 || (size == 9 && !NILP (omit_port))) |
e1652a86 KS |
1277 | { |
1278 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1279 | nargs = 8; | |
1280 | } | |
eab3844f | 1281 | else if (size == 9) |
e1652a86 KS |
1282 | { |
1283 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1284 | nargs = 9; | |
1285 | } | |
0dccee41 | 1286 | else |
991234f0 KS |
1287 | return Qnil; |
1288 | ||
0dccee41 | 1289 | for (i = 0; i < nargs; i++) |
cbf23adb | 1290 | { |
d311d28c | 1291 | if (! RANGED_INTEGERP (0, p->contents[i], 65535)) |
cbf23adb JB |
1292 | return Qnil; |
1293 | ||
1294 | if (nargs <= 5 /* IPv4 */ | |
1295 | && i < 4 /* host, not port */ | |
d311d28c | 1296 | && XINT (p->contents[i]) > 255) |
cbf23adb JB |
1297 | return Qnil; |
1298 | ||
1299 | args[i+1] = p->contents[i]; | |
1300 | } | |
1301 | ||
0dccee41 | 1302 | return Fformat (nargs+1, args); |
991234f0 KS |
1303 | } |
1304 | ||
1305 | if (CONSP (address)) | |
1306 | { | |
1307 | Lisp_Object args[2]; | |
1308 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1309 | args[1] = Fcar (address); |
991234f0 | 1310 | return Fformat (2, args); |
991234f0 KS |
1311 | } |
1312 | ||
1313 | return Qnil; | |
1314 | } | |
d0d6b7c5 JB |
1315 | |
1316 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1317 | doc: /* Return a list of all processes. */) |
5842a27b | 1318 | (void) |
d0d6b7c5 JB |
1319 | { |
1320 | return Fmapcar (Qcdr, Vprocess_alist); | |
1321 | } | |
1322 | \f | |
b0310da4 JB |
1323 | /* Starting asynchronous inferior processes. */ |
1324 | ||
d3da34e0 | 1325 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1326 | |
d0d6b7c5 | 1327 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1328 | doc: /* Start a program in a subprocess. Return the process object for it. |
1329 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1330 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1331 | |
1332 | Process output (both standard output and standard error streams) goes | |
1333 | at end of BUFFER, unless you specify an output stream or filter | |
1334 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1335 | this process is not associated with any buffer. |
1336 | ||
6b8bc570 CY |
1337 | PROGRAM is the program file name. It is searched for in `exec-path' |
1338 | (which see). If nil, just associate a pty with the buffer. Remaining | |
1339 | arguments are strings to give program as arguments. | |
320aebc9 | 1340 | |
4b6c5eee EZ |
1341 | If you want to separate standard output from standard error, invoke |
1342 | the command through a shell and redirect one of them using the shell | |
1343 | syntax. | |
320aebc9 | 1344 | |
3ecdf100 | 1345 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
f66c7cf8 | 1346 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 | 1347 | { |
1e30af70 | 1348 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1349 | register unsigned char **new_argv; |
f66c7cf8 | 1350 | ptrdiff_t i; |
d311d28c | 1351 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1352 | |
1353 | buffer = args[1]; | |
1354 | if (!NILP (buffer)) | |
1355 | buffer = Fget_buffer_create (buffer); | |
1356 | ||
1e30af70 JB |
1357 | /* Make sure that the child will be able to chdir to the current |
1358 | buffer's current directory, or its unhandled equivalent. We | |
1359 | can't just have the child check for an error when it does the | |
1360 | chdir, since it's in a vfork. | |
1361 | ||
1362 | We have to GCPRO around this because Fexpand_file_name and | |
1363 | Funhandled_file_name_directory might call a file name handling | |
1364 | function. The argument list is protected by the caller, so all | |
1365 | we really have to worry about is buffer. */ | |
1366 | { | |
1367 | struct gcpro gcpro1, gcpro2; | |
1368 | ||
4b4deea2 | 1369 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1370 | |
1371 | GCPRO2 (buffer, current_dir); | |
1372 | ||
ca319910 SM |
1373 | current_dir = Funhandled_file_name_directory (current_dir); |
1374 | if (NILP (current_dir)) | |
1375 | /* If the file name handler says that current_dir is unreachable, use | |
1376 | a sensible default. */ | |
1377 | current_dir = build_string ("~/"); | |
1378 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1379 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1380 | report_file_error ("Setting current directory", | |
4b4deea2 | 1381 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1382 | |
1383 | UNGCPRO; | |
1384 | } | |
1385 | ||
d0d6b7c5 | 1386 | name = args[0]; |
b7826503 | 1387 | CHECK_STRING (name); |
d0d6b7c5 JB |
1388 | |
1389 | program = args[2]; | |
1390 | ||
850d0752 NR |
1391 | if (!NILP (program)) |
1392 | CHECK_STRING (program); | |
d0d6b7c5 | 1393 | |
d0d6b7c5 | 1394 | proc = make_process (name); |
b0310da4 JB |
1395 | /* If an error occurs and we can't start the process, we want to |
1396 | remove it from the process list. This means that each error | |
1397 | check in create_process doesn't need to call remove_process | |
1398 | itself; it's all taken care of here. */ | |
1399 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 | 1400 | |
6a09a33b PE |
1401 | pset_childp (XPROCESS (proc), Qt); |
1402 | pset_plist (XPROCESS (proc), Qnil); | |
1403 | pset_type (XPROCESS (proc), Qreal); | |
1404 | pset_buffer (XPROCESS (proc), buffer); | |
1405 | pset_sentinel (XPROCESS (proc), Qnil); | |
1406 | pset_filter (XPROCESS (proc), Qnil); | |
1407 | pset_command (XPROCESS (proc), Flist (nargs - 2, args + 2)); | |
d0d6b7c5 | 1408 | |
8af55556 TZ |
1409 | #ifdef HAVE_GNUTLS |
1410 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1411 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
6a09a33b | 1412 | pset_gnutls_cred_type (XPROCESS (proc), Qnil); |
8af55556 TZ |
1413 | #endif |
1414 | ||
6b61353c | 1415 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1416 | XPROCESS (proc)->adaptive_read_buffering |
1417 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1418 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1419 | #endif |
1420 | ||
7af71e17 | 1421 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1422 | if (BUFFERP (buffer)) |
4d2b044c | 1423 | set_marker_both (XPROCESS (proc)->mark, buffer, |
d8a2934e RS |
1424 | BUF_ZV (XBUFFER (buffer)), |
1425 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1426 | |
67918941 | 1427 | { |
d5d4ae71 KH |
1428 | /* Decide coding systems for communicating with the process. Here |
1429 | we don't setup the structure coding_system nor pay attention to | |
1430 | unibyte mode. They are done in create_process. */ | |
1431 | ||
67918941 RS |
1432 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1433 | Lisp_Object coding_systems = Qt; | |
1434 | Lisp_Object val, *args2; | |
a4a37e65 | 1435 | struct gcpro gcpro1, gcpro2; |
67918941 | 1436 | |
d5d4ae71 KH |
1437 | val = Vcoding_system_for_read; |
1438 | if (NILP (val)) | |
67918941 | 1439 | { |
38182d90 | 1440 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1441 | args2[0] = Qstart_process; |
1442 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1443 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1444 | if (!NILP (program)) |
1445 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1446 | UNGCPRO; |
1447 | if (CONSP (coding_systems)) | |
70949dac | 1448 | val = XCAR (coding_systems); |
67918941 | 1449 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1450 | val = XCAR (Vdefault_process_coding_system); |
67918941 | 1451 | } |
6a09a33b | 1452 | pset_decode_coding_system (XPROCESS (proc), val); |
67918941 | 1453 | |
d5d4ae71 KH |
1454 | val = Vcoding_system_for_write; |
1455 | if (NILP (val)) | |
67918941 RS |
1456 | { |
1457 | if (EQ (coding_systems, Qt)) | |
1458 | { | |
38182d90 | 1459 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1460 | args2[0] = Qstart_process; |
1461 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1462 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1463 | if (!NILP (program)) |
1464 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1465 | UNGCPRO; |
1466 | } | |
1467 | if (CONSP (coding_systems)) | |
70949dac | 1468 | val = XCDR (coding_systems); |
67918941 | 1469 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1470 | val = XCDR (Vdefault_process_coding_system); |
67918941 | 1471 | } |
6a09a33b | 1472 | pset_encode_coding_system (XPROCESS (proc), val); |
e1dbe924 | 1473 | /* Note: At this moment, the above coding system may leave |
fcaf8878 KH |
1474 | text-conversion or eol-conversion unspecified. They will be |
1475 | decided after we read output from the process and decode it by | |
1476 | some coding system, or just before we actually send a text to | |
1477 | the process. */ | |
67918941 | 1478 | } |
0fa1789e | 1479 | |
a4a37e65 | 1480 | |
6a09a33b | 1481 | pset_decoding_buf (XPROCESS (proc), empty_unibyte_string); |
850d0752 | 1482 | XPROCESS (proc)->decoding_carryover = 0; |
6a09a33b | 1483 | pset_encoding_buf (XPROCESS (proc), empty_unibyte_string); |
ed30cf85 | 1484 | |
850d0752 NR |
1485 | XPROCESS (proc)->inherit_coding_system_flag |
1486 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1487 | |
850d0752 NR |
1488 | if (!NILP (program)) |
1489 | { | |
1490 | /* If program file name is not absolute, search our path for it. | |
1491 | Put the name we will really use in TEM. */ | |
1492 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1493 | && !(SCHARS (program) > 1 | |
1494 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1495 | { | |
1496 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1497 | ||
1498 | tem = Qnil; | |
1499 | GCPRO4 (name, program, buffer, current_dir); | |
1500 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1501 | UNGCPRO; | |
1502 | if (NILP (tem)) | |
1503 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1504 | tem = Fexpand_file_name (tem, Qnil); | |
1505 | } | |
1506 | else | |
1507 | { | |
1508 | if (!NILP (Ffile_directory_p (program))) | |
1509 | error ("Specified program for new process is a directory"); | |
1510 | tem = program; | |
1511 | } | |
ed30cf85 | 1512 | |
850d0752 NR |
1513 | /* If program file name starts with /: for quoting a magic name, |
1514 | discard that. */ | |
1515 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1516 | && SREF (tem, 1) == ':') | |
1517 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1518 | |
77bf07e1 | 1519 | { |
fcaf8878 | 1520 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1521 | struct gcpro gcpro1; |
1522 | GCPRO1 (tem); | |
a4a37e65 | 1523 | |
850d0752 NR |
1524 | /* Encode the file name and put it in NEW_ARGV. |
1525 | That's where the child will use it to execute the program. */ | |
1526 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1527 | |
850d0752 NR |
1528 | /* Here we encode arguments by the coding system used for sending |
1529 | data to the process. We don't support using different coding | |
1530 | systems for encoding arguments and for encoding data sent to the | |
1531 | process. */ | |
77bf07e1 | 1532 | |
850d0752 NR |
1533 | for (i = 3; i < nargs; i++) |
1534 | { | |
1535 | tem = Fcons (args[i], tem); | |
1536 | CHECK_STRING (XCAR (tem)); | |
1537 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1538 | { |
1539 | if (NILP (arg_encoding)) | |
1540 | arg_encoding = (complement_process_encoding_system | |
4d2b044c | 1541 | (XPROCESS (proc)->encode_coding_system)); |
fcaf8878 KH |
1542 | XSETCAR (tem, |
1543 | code_convert_string_norecord | |
1544 | (XCAR (tem), arg_encoding, 1)); | |
1545 | } | |
850d0752 | 1546 | } |
a4a37e65 | 1547 | |
850d0752 NR |
1548 | UNGCPRO; |
1549 | } | |
0fa1789e | 1550 | |
850d0752 NR |
1551 | /* Now that everything is encoded we can collect the strings into |
1552 | NEW_ARGV. */ | |
38182d90 | 1553 | new_argv = alloca ((nargs - 1) * sizeof *new_argv); |
850d0752 | 1554 | new_argv[nargs - 2] = 0; |
52a1b894 | 1555 | |
c5101a77 | 1556 | for (i = nargs - 2; i-- != 0; ) |
850d0752 NR |
1557 | { |
1558 | new_argv[i] = SDATA (XCAR (tem)); | |
1559 | tem = XCDR (tem); | |
1560 | } | |
1561 | ||
1562 | create_process (proc, (char **) new_argv, current_dir); | |
1563 | } | |
1564 | else | |
1565 | create_pty (proc); | |
d0d6b7c5 | 1566 | |
b0310da4 | 1567 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1568 | } |
1569 | ||
b0310da4 | 1570 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1571 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1572 | an error and the process wasn't started successfully, so we should |
1573 | remove it from the process list. */ | |
1574 | static Lisp_Object | |
d3da34e0 | 1575 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1576 | { |
bcd69aea | 1577 | if (!PROCESSP (proc)) |
1088b922 | 1578 | emacs_abort (); |
b0310da4 | 1579 | |
2bf26180 GM |
1580 | /* Was PROC started successfully? |
1581 | -2 is used for a pty with no process, eg for gdb. */ | |
1582 | if (XPROCESS (proc)->pid <= 0 && XPROCESS (proc)->pid != -2) | |
b0310da4 JB |
1583 | remove_process (proc); |
1584 | ||
1585 | return Qnil; | |
1586 | } | |
1587 | ||
ff6daed3 | 1588 | static void |
d3da34e0 | 1589 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1590 | { |
30904ab7 | 1591 | /* Nothing to do. */ |
d0d6b7c5 JB |
1592 | } |
1593 | ||
30904ab7 | 1594 | |
40ccffa6 | 1595 | static void |
d3da34e0 | 1596 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1597 | { |
29ed4d51 CY |
1598 | int inchannel, outchannel; |
1599 | pid_t pid; | |
d0d6b7c5 | 1600 | int sv[2]; |
2c4df143 YM |
1601 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1602 | int wait_child_setup[2]; | |
1603 | #endif | |
eeceac93 | 1604 | #ifdef SIGCHLD |
4d7e6e51 | 1605 | sigset_t blocked; |
0dc70c33 | 1606 | #endif |
eeceac93 | 1607 | /* Use volatile to protect variables from being clobbered by vfork. */ |
ecd1f654 KH |
1608 | volatile int forkin, forkout; |
1609 | volatile int pty_flag = 0; | |
4d7e6e51 PE |
1610 | volatile Lisp_Object lisp_pty_name = Qnil; |
1611 | volatile Lisp_Object encoded_current_dir; | |
1612 | #if HAVE_WORKING_VFORK | |
1613 | char **volatile save_environ; | |
1614 | #endif | |
d0d6b7c5 | 1615 | |
d0d6b7c5 JB |
1616 | inchannel = outchannel = -1; |
1617 | ||
1618 | #ifdef HAVE_PTYS | |
fe45da4e | 1619 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1620 | outchannel = inchannel = allocate_pty (); |
1621 | ||
d0d6b7c5 JB |
1622 | if (inchannel >= 0) |
1623 | { | |
2af70a0c RS |
1624 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1625 | /* On most USG systems it does not work to open the pty's tty here, | |
1626 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1627 | #ifdef O_NOCTTY |
1628 | /* Don't let this terminal become our controlling terminal | |
1629 | (in case we don't have one). */ | |
68c45bf0 | 1630 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1631 | #else |
68c45bf0 | 1632 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1633 | #endif |
1634 | if (forkin < 0) | |
1635 | report_file_error ("Opening pty", Qnil); | |
1636 | #else | |
1637 | forkin = forkout = -1; | |
2af70a0c | 1638 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 | 1639 | pty_flag = 1; |
4d7e6e51 | 1640 | lisp_pty_name = build_string (pty_name); |
d0d6b7c5 JB |
1641 | } |
1642 | else | |
1643 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1644 | { |
fc14013c KH |
1645 | int tem; |
1646 | tem = pipe (sv); | |
1647 | if (tem < 0) | |
1648 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1649 | inchannel = sv[0]; |
1650 | forkout = sv[1]; | |
fc14013c KH |
1651 | tem = pipe (sv); |
1652 | if (tem < 0) | |
1653 | { | |
68c45bf0 PE |
1654 | emacs_close (inchannel); |
1655 | emacs_close (forkout); | |
fc14013c KH |
1656 | report_file_error ("Creating pipe", Qnil); |
1657 | } | |
d0d6b7c5 JB |
1658 | outchannel = sv[1]; |
1659 | forkin = sv[0]; | |
1660 | } | |
d0d6b7c5 | 1661 | |
2c4df143 YM |
1662 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1663 | { | |
1664 | int tem; | |
1665 | ||
1666 | tem = pipe (wait_child_setup); | |
1667 | if (tem < 0) | |
1668 | report_file_error ("Creating pipe", Qnil); | |
1669 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1670 | if (tem >= 0) | |
1671 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1672 | if (tem < 0) | |
1673 | { | |
1674 | emacs_close (wait_child_setup[0]); | |
1675 | emacs_close (wait_child_setup[1]); | |
1676 | report_file_error ("Setting file descriptor flags", Qnil); | |
1677 | } | |
1678 | } | |
1679 | #endif | |
1680 | ||
d0d6b7c5 JB |
1681 | #ifdef O_NONBLOCK |
1682 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1683 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1684 | #else |
1685 | #ifdef O_NDELAY | |
1686 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1687 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1688 | #endif |
1689 | #endif | |
1690 | ||
1691 | /* Record this as an active process, with its channels. | |
1692 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1693 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1694 | XPROCESS (process)->infd = inchannel; |
1695 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1696 | |
1697 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1698 | It was only used for getting the foreground tty process, so now | |
1699 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1700 | more portable (see USG_SUBTTY_WORKS above). */ | |
1701 | ||
60f0fb11 | 1702 | XPROCESS (process)->pty_flag = pty_flag; |
6a09a33b | 1703 | pset_status (XPROCESS (process), Qrun); |
d0d6b7c5 | 1704 | |
3081bf8d | 1705 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1706 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1707 | if (inchannel > max_process_desc) |
1708 | max_process_desc = inchannel; | |
1709 | ||
0b3d4a47 | 1710 | /* This may signal an error. */ |
5cf2b69b KH |
1711 | setup_process_coding_systems (process); |
1712 | ||
4d7e6e51 | 1713 | encoded_current_dir = ENCODE_FILE (current_dir); |
177c0ea7 | 1714 | |
4d7e6e51 PE |
1715 | block_input (); |
1716 | ||
1717 | #ifdef SIGCHLD | |
1718 | /* Block SIGCHLD until we have a chance to store the new fork's | |
1719 | pid in its process structure. */ | |
1720 | sigemptyset (&blocked); | |
1721 | sigaddset (&blocked, SIGCHLD); | |
1722 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
1723 | #endif | |
1724 | ||
1725 | #if HAVE_WORKING_VFORK | |
1726 | /* child_setup must clobber environ on systems with true vfork. | |
1727 | Protect it from permanent change. */ | |
1728 | save_environ = environ; | |
1729 | #endif | |
a932f187 | 1730 | |
e98d950b | 1731 | #ifndef WINDOWSNT |
4d7e6e51 PE |
1732 | pid = vfork (); |
1733 | if (pid == 0) | |
e98d950b | 1734 | #endif /* not WINDOWSNT */ |
4d7e6e51 PE |
1735 | { |
1736 | int xforkin = forkin; | |
1737 | int xforkout = forkout; | |
d0d6b7c5 | 1738 | |
4d7e6e51 | 1739 | /* Make the pty be the controlling terminal of the process. */ |
d0d6b7c5 | 1740 | #ifdef HAVE_PTYS |
4d7e6e51 | 1741 | /* First, disconnect its current controlling terminal. */ |
4d7e6e51 PE |
1742 | /* We tried doing setsid only if pty_flag, but it caused |
1743 | process_set_signal to fail on SGI when using a pipe. */ | |
1744 | setsid (); | |
1745 | /* Make the pty's terminal the controlling terminal. */ | |
1746 | if (pty_flag && xforkin >= 0) | |
1747 | { | |
39e9ebcd | 1748 | #ifdef TIOCSCTTY |
4d7e6e51 PE |
1749 | /* We ignore the return value |
1750 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1751 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1752 | #endif |
4d7e6e51 | 1753 | } |
a7ebc409 | 1754 | #if defined (LDISC1) |
4d7e6e51 PE |
1755 | if (pty_flag && xforkin >= 0) |
1756 | { | |
1757 | struct termios t; | |
1758 | tcgetattr (xforkin, &t); | |
1759 | t.c_lflag = LDISC1; | |
1760 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
1761 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); | |
1762 | } | |
9bcf8ec6 | 1763 | #else |
aafadd9f | 1764 | #if defined (NTTYDISC) && defined (TIOCSETD) |
4d7e6e51 PE |
1765 | if (pty_flag && xforkin >= 0) |
1766 | { | |
1767 | /* Use new line discipline. */ | |
1768 | int ldisc = NTTYDISC; | |
1769 | ioctl (xforkin, TIOCSETD, &ldisc); | |
1770 | } | |
000ab717 | 1771 | #endif |
9bcf8ec6 | 1772 | #endif |
177c0ea7 | 1773 | #ifdef TIOCNOTTY |
4d7e6e51 PE |
1774 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1775 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1776 | if (pty_flag) | |
1777 | { | |
1778 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? | |
1779 | I can't test it since I don't have 4.3. */ | |
1780 | int j = emacs_open ("/dev/tty", O_RDWR, 0); | |
1781 | if (j >= 0) | |
1782 | { | |
1783 | ioctl (j, TIOCNOTTY, 0); | |
1784 | emacs_close (j); | |
1785 | } | |
4d7e6e51 | 1786 | } |
d0d6b7c5 JB |
1787 | #endif /* TIOCNOTTY */ |
1788 | ||
e39a993c | 1789 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1790 | /*** There is a suggestion that this ought to be a |
dd0333b6 | 1791 | conditional on TIOCSPGRP, or !defined TIOCSCTTY. |
99153b9e RS |
1792 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; |
1793 | that system does seem to need this code, even though | |
dd0333b6 | 1794 | both TIOCSCTTY is defined. */ |
d0d6b7c5 JB |
1795 | /* Now close the pty (if we had it open) and reopen it. |
1796 | This makes the pty the controlling terminal of the subprocess. */ | |
4d7e6e51 PE |
1797 | if (pty_flag) |
1798 | { | |
99e3d726 | 1799 | |
4d7e6e51 PE |
1800 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1801 | would work? */ | |
1802 | if (xforkin >= 0) | |
1803 | emacs_close (xforkin); | |
1804 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1805 | |
4d7e6e51 PE |
1806 | if (xforkin < 0) |
1807 | { | |
1808 | emacs_write (1, "Couldn't open the pty terminal ", 31); | |
1809 | emacs_write (1, pty_name, strlen (pty_name)); | |
1810 | emacs_write (1, "\n", 1); | |
1811 | _exit (1); | |
1812 | } | |
4aa54ba8 | 1813 | |
4d7e6e51 | 1814 | } |
e39a993c | 1815 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1816 | |
d0d6b7c5 | 1817 | #ifdef SETUP_SLAVE_PTY |
4d7e6e51 PE |
1818 | if (pty_flag) |
1819 | { | |
1820 | SETUP_SLAVE_PTY; | |
1821 | } | |
d0d6b7c5 JB |
1822 | #endif /* SETUP_SLAVE_PTY */ |
1823 | #ifdef AIX | |
4d7e6e51 PE |
1824 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. |
1825 | Now reenable it in the child, so it will die when we want it to. */ | |
1826 | if (pty_flag) | |
1827 | signal (SIGHUP, SIG_DFL); | |
d0d6b7c5 JB |
1828 | #endif |
1829 | #endif /* HAVE_PTYS */ | |
1830 | ||
4d7e6e51 PE |
1831 | signal (SIGINT, SIG_DFL); |
1832 | signal (SIGQUIT, SIG_DFL); | |
1833 | ||
1834 | /* Emacs ignores SIGPIPE, but the child should not. */ | |
1835 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 | 1836 | |
eeceac93 | 1837 | #ifdef SIGCHLD |
0dc70c33 | 1838 | /* Stop blocking signals in the child. */ |
4d7e6e51 | 1839 | pthread_sigmask (SIG_SETMASK, &empty_mask, 0); |
eeceac93 | 1840 | #endif |
5e7e1da2 | 1841 | |
4d7e6e51 PE |
1842 | if (pty_flag) |
1843 | child_setup_tty (xforkout); | |
e98d950b | 1844 | #ifdef WINDOWSNT |
4d7e6e51 PE |
1845 | pid = child_setup (xforkin, xforkout, xforkout, |
1846 | new_argv, 1, encoded_current_dir); | |
177c0ea7 | 1847 | #else /* not WINDOWSNT */ |
2c4df143 | 1848 | #ifdef FD_CLOEXEC |
4d7e6e51 | 1849 | emacs_close (wait_child_setup[0]); |
2c4df143 | 1850 | #endif |
4d7e6e51 PE |
1851 | child_setup (xforkin, xforkout, xforkout, |
1852 | new_argv, 1, encoded_current_dir); | |
e98d950b | 1853 | #endif /* not WINDOWSNT */ |
4d7e6e51 | 1854 | } |
d0d6b7c5 | 1855 | |
4d7e6e51 PE |
1856 | /* Back in the parent process. */ |
1857 | ||
1858 | #if HAVE_WORKING_VFORK | |
1859 | environ = save_environ; | |
1860 | #endif | |
1861 | ||
1862 | XPROCESS (process)->pid = pid; | |
0b3d4a47 PE |
1863 | if (0 <= pid) |
1864 | XPROCESS (process)->alive = 1; | |
d0d6b7c5 | 1865 | |
4d7e6e51 PE |
1866 | /* Stop blocking signals in the parent. */ |
1867 | #ifdef SIGCHLD | |
1868 | pthread_sigmask (SIG_SETMASK, &empty_mask, 0); | |
1869 | #endif | |
1870 | unblock_input (); | |
ececcbec | 1871 | |
d0d6b7c5 | 1872 | if (pid < 0) |
6311cf58 RS |
1873 | { |
1874 | if (forkin >= 0) | |
68c45bf0 | 1875 | emacs_close (forkin); |
6311cf58 | 1876 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1877 | emacs_close (forkout); |
6311cf58 | 1878 | } |
4a127b3b KH |
1879 | else |
1880 | { | |
1881 | /* vfork succeeded. */ | |
d0d6b7c5 | 1882 | |
e98d950b | 1883 | #ifdef WINDOWSNT |
4a127b3b | 1884 | register_child (pid, inchannel); |
e98d950b RS |
1885 | #endif /* WINDOWSNT */ |
1886 | ||
4a127b3b KH |
1887 | /* If the subfork execv fails, and it exits, |
1888 | this close hangs. I don't know why. | |
1889 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
1890 | { |
1891 | struct atimer *timer; | |
e9a9ae03 | 1892 | EMACS_TIME offset = make_emacs_time (1, 0); |
177c0ea7 | 1893 | |
30904ab7 | 1894 | stop_polling (); |
30904ab7 | 1895 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); |
177c0ea7 | 1896 | |
30904ab7 GM |
1897 | if (forkin >= 0) |
1898 | emacs_close (forkin); | |
1899 | ||
1900 | cancel_atimer (timer); | |
1901 | start_polling (); | |
1902 | } | |
177c0ea7 | 1903 | |
4a127b3b | 1904 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1905 | emacs_close (forkout); |
d0d6b7c5 | 1906 | |
4d7e6e51 | 1907 | pset_tty_name (XPROCESS (process), lisp_pty_name); |
2c4df143 YM |
1908 | |
1909 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
1910 | /* Wait for child_setup to complete in case that vfork is | |
1911 | actually defined as fork. The descriptor wait_child_setup[1] | |
1912 | of a pipe is closed at the child side either by close-on-exec | |
1913 | on successful execvp or the _exit call in child_setup. */ | |
1914 | { | |
1915 | char dummy; | |
1916 | ||
1917 | emacs_close (wait_child_setup[1]); | |
1918 | emacs_read (wait_child_setup[0], &dummy, 1); | |
1919 | emacs_close (wait_child_setup[0]); | |
1920 | } | |
1921 | #endif | |
4a127b3b | 1922 | } |
3b9a3dfa | 1923 | |
4a127b3b KH |
1924 | /* Now generate the error if vfork failed. */ |
1925 | if (pid < 0) | |
1926 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 1927 | } |
d0d6b7c5 | 1928 | |
850d0752 | 1929 | void |
d3da34e0 | 1930 | create_pty (Lisp_Object process) |
850d0752 NR |
1931 | { |
1932 | int inchannel, outchannel; | |
afd4052b | 1933 | int pty_flag = 0; |
850d0752 NR |
1934 | |
1935 | inchannel = outchannel = -1; | |
1936 | ||
1937 | #ifdef HAVE_PTYS | |
1938 | if (!NILP (Vprocess_connection_type)) | |
1939 | outchannel = inchannel = allocate_pty (); | |
1940 | ||
1941 | if (inchannel >= 0) | |
1942 | { | |
1943 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
1944 | /* On most USG systems it does not work to open the pty's tty here, | |
1945 | then close it and reopen it in the child. */ | |
1946 | #ifdef O_NOCTTY | |
1947 | /* Don't let this terminal become our controlling terminal | |
1948 | (in case we don't have one). */ | |
afd4052b | 1949 | int forkout = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
850d0752 | 1950 | #else |
afd4052b | 1951 | int forkout = emacs_open (pty_name, O_RDWR, 0); |
850d0752 | 1952 | #endif |
aba7731a | 1953 | if (forkout < 0) |
850d0752 | 1954 | report_file_error ("Opening pty", Qnil); |
019d2c4c | 1955 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
1956 | /* In the case that vfork is defined as fork, the parent process |
1957 | (Emacs) may send some data before the child process completes | |
1958 | tty options setup. So we setup tty before forking. */ | |
1959 | child_setup_tty (forkout); | |
019d2c4c | 1960 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
1961 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
1962 | pty_flag = 1; | |
1963 | } | |
1964 | #endif /* HAVE_PTYS */ | |
1965 | ||
1966 | #ifdef O_NONBLOCK | |
1967 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
1968 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
1969 | #else | |
1970 | #ifdef O_NDELAY | |
1971 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
1972 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
1973 | #endif | |
1974 | #endif | |
1975 | ||
1976 | /* Record this as an active process, with its channels. | |
1977 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1978 | chan_process[inchannel] = process; | |
1979 | XPROCESS (process)->infd = inchannel; | |
1980 | XPROCESS (process)->outfd = outchannel; | |
1981 | ||
1982 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1983 | It was only used for getting the foreground tty process, so now | |
1984 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1985 | more portable (see USG_SUBTTY_WORKS above). */ | |
1986 | ||
1987 | XPROCESS (process)->pty_flag = pty_flag; | |
6a09a33b | 1988 | pset_status (XPROCESS (process), Qrun); |
850d0752 NR |
1989 | setup_process_coding_systems (process); |
1990 | ||
1991 | FD_SET (inchannel, &input_wait_mask); | |
1992 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
1993 | if (inchannel > max_process_desc) | |
1994 | max_process_desc = inchannel; | |
1995 | ||
1996 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
1997 | #ifdef HAVE_PTYS |
1998 | if (pty_flag) | |
6a09a33b | 1999 | pset_tty_name (XPROCESS (process), build_string (pty_name)); |
8b9fc636 EZ |
2000 | else |
2001 | #endif | |
6a09a33b | 2002 | pset_tty_name (XPROCESS (process), Qnil); |
850d0752 NR |
2003 | } |
2004 | ||
e690ca94 | 2005 | \f |
e690ca94 KS |
2006 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2007 | The address family of sa is not included in the result. */ | |
2008 | ||
2009 | static Lisp_Object | |
d3da34e0 | 2010 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
2011 | { |
2012 | Lisp_Object address; | |
2013 | int i; | |
2014 | unsigned char *cp; | |
2015 | register struct Lisp_Vector *p; | |
2016 | ||
63136da6 AS |
2017 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2018 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2019 | a zero length name. */ | |
89887d67 | 2020 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2021 | return empty_unibyte_string; |
63136da6 | 2022 | |
e690ca94 KS |
2023 | switch (sa->sa_family) |
2024 | { | |
2025 | case AF_INET: | |
2026 | { | |
2027 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2028 | len = sizeof (sin->sin_addr) + 1; | |
2029 | address = Fmake_vector (make_number (len), Qnil); | |
2030 | p = XVECTOR (address); | |
2031 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2032 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2033 | break; |
2034 | } | |
e1652a86 KS |
2035 | #ifdef AF_INET6 |
2036 | case AF_INET6: | |
2037 | { | |
2038 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2039 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2040 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2041 | address = Fmake_vector (make_number (len), Qnil); | |
2042 | p = XVECTOR (address); | |
2043 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2044 | for (i = 0; i < len; i++) | |
2045 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2046 | return address; | |
2047 | } | |
2048 | #endif | |
e690ca94 KS |
2049 | #ifdef HAVE_LOCAL_SOCKETS |
2050 | case AF_LOCAL: | |
2051 | { | |
fb23673a EZ |
2052 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2053 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2054 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2055 | break; |
fb23673a | 2056 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2057 | } |
2058 | #endif | |
2059 | default: | |
89887d67 | 2060 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2061 | address = Fcons (make_number (sa->sa_family), |
2062 | Fmake_vector (make_number (len), Qnil)); | |
2063 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2064 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2065 | break; |
2066 | } | |
2067 | ||
2068 | i = 0; | |
2069 | while (i < len) | |
2070 | p->contents[i++] = make_number (*cp++); | |
2071 | ||
2072 | return address; | |
2073 | } | |
2074 | ||
2075 | ||
2076 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2077 | ||
2078 | static int | |
d3da34e0 | 2079 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2080 | { |
2081 | register struct Lisp_Vector *p; | |
2082 | ||
2083 | if (VECTORP (address)) | |
2084 | { | |
2085 | p = XVECTOR (address); | |
eab3844f | 2086 | if (p->header.size == 5) |
e690ca94 KS |
2087 | { |
2088 | *familyp = AF_INET; | |
2089 | return sizeof (struct sockaddr_in); | |
2090 | } | |
e1652a86 | 2091 | #ifdef AF_INET6 |
eab3844f | 2092 | else if (p->header.size == 9) |
e1652a86 KS |
2093 | { |
2094 | *familyp = AF_INET6; | |
2095 | return sizeof (struct sockaddr_in6); | |
2096 | } | |
2097 | #endif | |
e690ca94 KS |
2098 | } |
2099 | #ifdef HAVE_LOCAL_SOCKETS | |
2100 | else if (STRINGP (address)) | |
2101 | { | |
2102 | *familyp = AF_LOCAL; | |
2103 | return sizeof (struct sockaddr_un); | |
2104 | } | |
2105 | #endif | |
d311d28c PE |
2106 | else if (CONSP (address) && TYPE_RANGED_INTEGERP (int, XCAR (address)) |
2107 | && VECTORP (XCDR (address))) | |
e690ca94 KS |
2108 | { |
2109 | struct sockaddr *sa; | |
2110 | *familyp = XINT (XCAR (address)); | |
2111 | p = XVECTOR (XCDR (address)); | |
eab3844f | 2112 | return p->header.size + sizeof (sa->sa_family); |
e690ca94 KS |
2113 | } |
2114 | return 0; | |
2115 | } | |
2116 | ||
2117 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2118 | |
2119 | The address format has been basically validated by | |
2120 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2121 | it could have come from user data. So if FAMILY is not valid, | |
2122 | we return after zeroing *SA. */ | |
e690ca94 KS |
2123 | |
2124 | static void | |
d3da34e0 | 2125 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2126 | { |
2127 | register struct Lisp_Vector *p; | |
34967d0f | 2128 | register unsigned char *cp = NULL; |
e690ca94 | 2129 | register int i; |
d311d28c | 2130 | EMACS_INT hostport; |
e690ca94 | 2131 | |
72af86bd | 2132 | memset (sa, 0, len); |
e690ca94 KS |
2133 | |
2134 | if (VECTORP (address)) | |
2135 | { | |
2136 | p = XVECTOR (address); | |
2137 | if (family == AF_INET) | |
2138 | { | |
2139 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2140 | len = sizeof (sin->sin_addr) + 1; | |
d311d28c PE |
2141 | hostport = XINT (p->contents[--len]); |
2142 | sin->sin_port = htons (hostport); | |
e690ca94 | 2143 | cp = (unsigned char *)&sin->sin_addr; |
9d1a8e5d | 2144 | sa->sa_family = family; |
e690ca94 | 2145 | } |
e1652a86 KS |
2146 | #ifdef AF_INET6 |
2147 | else if (family == AF_INET6) | |
2148 | { | |
2149 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2150 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2151 | len = sizeof (sin6->sin6_addr) + 1; | |
d311d28c PE |
2152 | hostport = XINT (p->contents[--len]); |
2153 | sin6->sin6_port = htons (hostport); | |
e1652a86 KS |
2154 | for (i = 0; i < len; i++) |
2155 | if (INTEGERP (p->contents[i])) | |
2156 | { | |
2157 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2158 | ip6[i] = ntohs (j); | |
2159 | } | |
9d1a8e5d | 2160 | sa->sa_family = family; |
0eb7675e | 2161 | return; |
e1652a86 KS |
2162 | } |
2163 | #endif | |
0eb7675e AS |
2164 | else |
2165 | return; | |
e690ca94 KS |
2166 | } |
2167 | else if (STRINGP (address)) | |
2168 | { | |
2169 | #ifdef HAVE_LOCAL_SOCKETS | |
2170 | if (family == AF_LOCAL) | |
2171 | { | |
fb23673a | 2172 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2173 | cp = SDATA (address); |
fb23673a EZ |
2174 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2175 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2176 | sa->sa_family = family; |
e690ca94 KS |
2177 | } |
2178 | #endif | |
2179 | return; | |
2180 | } | |
2181 | else | |
2182 | { | |
2183 | p = XVECTOR (XCDR (address)); | |
2184 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2185 | } | |
2186 | ||
2187 | for (i = 0; i < len; i++) | |
2188 | if (INTEGERP (p->contents[i])) | |
2189 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2190 | } | |
2191 | ||
2192 | #ifdef DATAGRAM_SOCKETS | |
2193 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2194 | 1, 1, 0, | |
2195 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2196 | (Lisp_Object process) |
e690ca94 KS |
2197 | { |
2198 | int channel; | |
2199 | ||
2200 | CHECK_PROCESS (process); | |
2201 | ||
2202 | if (!DATAGRAM_CONN_P (process)) | |
2203 | return Qnil; | |
2204 | ||
60f0fb11 | 2205 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2206 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2207 | datagram_address[channel].len); | |
2208 | } | |
2209 | ||
2210 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2211 | 2, 2, 0, | |
2212 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2213 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2214 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2215 | { |
2216 | int channel; | |
2217 | int family, len; | |
2218 | ||
2219 | CHECK_PROCESS (process); | |
2220 | ||
2221 | if (!DATAGRAM_CONN_P (process)) | |
2222 | return Qnil; | |
2223 | ||
60f0fb11 | 2224 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2225 | |
2226 | len = get_lisp_to_sockaddr_size (address, &family); | |
2227 | if (datagram_address[channel].len != len) | |
2228 | return Qnil; | |
2229 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2230 | return address; | |
2231 | } | |
2232 | #endif | |
2233 | \f | |
2234 | ||
5e2327cf | 2235 | static const struct socket_options { |
e690ca94 | 2236 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2237 | name without SO_ prefix. */ |
fce70521 | 2238 | const char *name; |
e690ca94 KS |
2239 | /* Option level SOL_... */ |
2240 | int optlevel; | |
2241 | /* Option number SO_... */ | |
2242 | int optnum; | |
6b61353c KH |
2243 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2244 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2245 | } socket_options[] = |
2246 | { | |
2247 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2248 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2249 | #endif |
2250 | #ifdef SO_BROADCAST | |
6b61353c | 2251 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2252 | #endif |
2253 | #ifdef SO_DONTROUTE | |
6b61353c | 2254 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2255 | #endif |
2256 | #ifdef SO_KEEPALIVE | |
6b61353c | 2257 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2258 | #endif |
2259 | #ifdef SO_LINGER | |
6b61353c | 2260 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2261 | #endif |
2262 | #ifdef SO_OOBINLINE | |
6b61353c | 2263 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2264 | #endif |
2265 | #ifdef SO_PRIORITY | |
6b61353c | 2266 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2267 | #endif |
2268 | #ifdef SO_REUSEADDR | |
6b61353c | 2269 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2270 | #endif |
6b61353c | 2271 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2272 | }; |
2273 | ||
6b61353c | 2274 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2275 | |
6b61353c KH |
2276 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2277 | Signals an error if setting a known option fails. | |
2278 | */ | |
e690ca94 KS |
2279 | |
2280 | static int | |
d3da34e0 | 2281 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2282 | { |
6b61353c | 2283 | char *name; |
5e2327cf | 2284 | const struct socket_options *sopt; |
6b61353c | 2285 | int ret = 0; |
e690ca94 | 2286 | |
6b61353c | 2287 | CHECK_SYMBOL (opt); |
e690ca94 | 2288 | |
51b59d79 | 2289 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2290 | for (sopt = socket_options; sopt->name; sopt++) |
2291 | if (strcmp (name, sopt->name) == 0) | |
2292 | break; | |
e690ca94 | 2293 | |
6b61353c KH |
2294 | switch (sopt->opttype) |
2295 | { | |
2296 | case SOPT_BOOL: | |
2297 | { | |
2298 | int optval; | |
2299 | optval = NILP (val) ? 0 : 1; | |
2300 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2301 | &optval, sizeof (optval)); | |
2302 | break; | |
2303 | } | |
e690ca94 | 2304 | |
6b61353c KH |
2305 | case SOPT_INT: |
2306 | { | |
2307 | int optval; | |
d311d28c | 2308 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2309 | optval = XINT (val); |
2310 | else | |
2311 | error ("Bad option value for %s", name); | |
2312 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2313 | &optval, sizeof (optval)); | |
2314 | break; | |
2315 | } | |
e690ca94 | 2316 | |
6b61353c KH |
2317 | #ifdef SO_BINDTODEVICE |
2318 | case SOPT_IFNAME: | |
2319 | { | |
2320 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2321 | |
6b61353c KH |
2322 | /* This is broken, at least in the Linux 2.4 kernel. |
2323 | To unbind, the arg must be a zero integer, not the empty string. | |
2324 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2325 | memset (devname, 0, sizeof devname); |
6b61353c | 2326 | if (STRINGP (val)) |
e690ca94 | 2327 | { |
51b59d79 | 2328 | char *arg = SSDATA (val); |
6b61353c | 2329 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2330 | memcpy (devname, arg, len); |
e690ca94 | 2331 | } |
6b61353c KH |
2332 | else if (!NILP (val)) |
2333 | error ("Bad option value for %s", name); | |
2334 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2335 | devname, IFNAMSIZ); | |
2336 | break; | |
2337 | } | |
2338 | #endif | |
e690ca94 | 2339 | |
177c0ea7 | 2340 | #ifdef SO_LINGER |
6b61353c KH |
2341 | case SOPT_LINGER: |
2342 | { | |
2343 | struct linger linger; | |
e690ca94 | 2344 | |
6b61353c KH |
2345 | linger.l_onoff = 1; |
2346 | linger.l_linger = 0; | |
d311d28c | 2347 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2348 | linger.l_linger = XINT (val); |
2349 | else | |
2350 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2351 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2352 | &linger, sizeof (linger)); | |
2353 | break; | |
2354 | } | |
e690ca94 | 2355 | #endif |
6b61353c KH |
2356 | |
2357 | default: | |
2358 | return 0; | |
e690ca94 | 2359 | } |
6b61353c KH |
2360 | |
2361 | if (ret < 0) | |
2362 | report_file_error ("Cannot set network option", | |
2363 | Fcons (opt, Fcons (val, Qnil))); | |
2364 | return (1 << sopt->optbit); | |
e690ca94 KS |
2365 | } |
2366 | ||
6b61353c KH |
2367 | |
2368 | DEFUN ("set-network-process-option", | |
2369 | Fset_network_process_option, Sset_network_process_option, | |
2370 | 3, 4, 0, | |
2371 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2372 | See `make-network-process' for a list of options and values. | |
2373 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2374 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2375 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2376 | { |
6b61353c KH |
2377 | int s; |
2378 | struct Lisp_Process *p; | |
e690ca94 | 2379 | |
e690ca94 | 2380 | CHECK_PROCESS (process); |
6b61353c KH |
2381 | p = XPROCESS (process); |
2382 | if (!NETCONN1_P (p)) | |
2383 | error ("Process is not a network process"); | |
2384 | ||
60f0fb11 | 2385 | s = p->infd; |
6b61353c KH |
2386 | if (s < 0) |
2387 | error ("Process is not running"); | |
2388 | ||
2389 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2390 | { |
6a09a33b | 2391 | pset_childp (p, Fplist_put (p->childp, option, value)); |
6b61353c | 2392 | return Qt; |
e690ca94 | 2393 | } |
6b61353c KH |
2394 | |
2395 | if (NILP (no_error)) | |
2396 | error ("Unknown or unsupported option"); | |
2397 | ||
2398 | return Qnil; | |
e690ca94 | 2399 | } |
6b61353c | 2400 | |
e690ca94 | 2401 | \f |
d888760c GM |
2402 | DEFUN ("serial-process-configure", |
2403 | Fserial_process_configure, | |
2404 | Sserial_process_configure, | |
2405 | 0, MANY, 0, | |
2406 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2407 | ||
2408 | Arguments are specified as keyword/argument pairs. Attributes that | |
2409 | are not given are re-initialized from the process's current | |
2410 | configuration (available via the function `process-contact') or set to | |
2411 | reasonable default values. The following arguments are defined: | |
2412 | ||
2413 | :process PROCESS | |
2414 | :name NAME | |
2415 | :buffer BUFFER | |
2416 | :port PORT | |
2417 | -- Any of these arguments can be given to identify the process that is | |
2418 | to be configured. If none of these arguments is given, the current | |
2419 | buffer's process is used. | |
2420 | ||
2421 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2422 | second, also called baud rate. Any value can be given for SPEED, but | |
2423 | most serial ports work only at a few defined values between 1200 and | |
2424 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2425 | serial port is not configured any further, i.e., all other arguments | |
2426 | are ignored. This may be useful for special serial ports such as | |
2427 | Bluetooth-to-serial converters which can only be configured through AT | |
2428 | commands. A value of nil for SPEED can be used only when passed | |
2429 | through `make-serial-process' or `serial-term'. | |
2430 | ||
2431 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2432 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2433 | ||
2434 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2435 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2436 | PARITY is not given, no parity is used. | |
2437 | ||
2438 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2439 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2440 | is not given or nil, 1 stopbit is used. | |
2441 | ||
2442 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2443 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2444 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2445 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2446 | flowcontrol is used. | |
2447 | ||
2448 | `serial-process-configure' is called by `make-serial-process' for the | |
2449 | initial configuration of the serial port. | |
2450 | ||
2451 | Examples: | |
2452 | ||
2453 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2454 | ||
2455 | \(serial-process-configure | |
2456 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2457 | ||
2458 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2459 | ||
2460 | usage: (serial-process-configure &rest ARGS) */) | |
f66c7cf8 | 2461 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2462 | { |
2463 | struct Lisp_Process *p; | |
2464 | Lisp_Object contact = Qnil; | |
2465 | Lisp_Object proc = Qnil; | |
2466 | struct gcpro gcpro1; | |
2467 | ||
2468 | contact = Flist (nargs, args); | |
2469 | GCPRO1 (contact); | |
2470 | ||
2471 | proc = Fplist_get (contact, QCprocess); | |
2472 | if (NILP (proc)) | |
2473 | proc = Fplist_get (contact, QCname); | |
2474 | if (NILP (proc)) | |
2475 | proc = Fplist_get (contact, QCbuffer); | |
2476 | if (NILP (proc)) | |
2477 | proc = Fplist_get (contact, QCport); | |
2478 | proc = get_process (proc); | |
2479 | p = XPROCESS (proc); | |
4d2b044c | 2480 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2481 | error ("Not a serial process"); |
2482 | ||
4d2b044c | 2483 | if (NILP (Fplist_get (p->childp, QCspeed))) |
d888760c GM |
2484 | { |
2485 | UNGCPRO; | |
2486 | return Qnil; | |
2487 | } | |
2488 | ||
2489 | serial_configure (p, contact); | |
2490 | ||
2491 | UNGCPRO; | |
2492 | return Qnil; | |
2493 | } | |
d888760c | 2494 | |
d888760c | 2495 | /* Used by make-serial-process to recover from errors. */ |
b766f867 PE |
2496 | static Lisp_Object |
2497 | make_serial_process_unwind (Lisp_Object proc) | |
d888760c GM |
2498 | { |
2499 | if (!PROCESSP (proc)) | |
1088b922 | 2500 | emacs_abort (); |
d888760c GM |
2501 | remove_process (proc); |
2502 | return Qnil; | |
2503 | } | |
d888760c | 2504 | |
d888760c GM |
2505 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2506 | 0, MANY, 0, | |
2507 | doc: /* Create and return a serial port process. | |
2508 | ||
2509 | In Emacs, serial port connections are represented by process objects, | |
2510 | so input and output work as for subprocesses, and `delete-process' | |
2511 | closes a serial port connection. However, a serial process has no | |
2512 | process id, it cannot be signaled, and the status codes are different | |
2513 | from normal processes. | |
2514 | ||
2515 | `make-serial-process' creates a process and a buffer, on which you | |
2516 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2517 | an interactive terminal. See below for examples. | |
2518 | ||
2519 | Arguments are specified as keyword/argument pairs. The following | |
2520 | arguments are defined: | |
2521 | ||
2522 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2523 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2524 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2525 | the backslashes in strings). | |
2526 | ||
2527 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
4373fd43 | 2528 | which this function calls. |
d888760c GM |
2529 | |
2530 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2531 | the value of PORT is used. | |
2532 | ||
2533 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2534 | with the process. Process output goes at the end of that buffer, | |
2535 | unless you specify an output stream or filter function to handle the | |
2536 | output. If BUFFER is not given, the value of NAME is used. | |
2537 | ||
2538 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2539 | system used for both reading and writing for this process. If CODING | |
2540 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2541 | ENCODING is used for writing. | |
2542 | ||
2543 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2544 | the process is running. If BOOL is not given, query before exiting. | |
2545 | ||
2546 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2547 | In the stopped state, a serial process does not accept incoming data, | |
2548 | but you can send outgoing data. The stopped state is cleared by | |
2549 | `continue-process' and set by `stop-process'. | |
2550 | ||
2551 | :filter FILTER -- Install FILTER as the process filter. | |
2552 | ||
2553 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2554 | ||
2555 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2556 | ||
d888760c GM |
2557 | :bytesize |
2558 | :parity | |
2559 | :stopbits | |
2560 | :flowcontrol | |
4373fd43 GM |
2561 | -- This function calls `serial-process-configure' to handle these |
2562 | arguments. | |
d888760c GM |
2563 | |
2564 | The original argument list, possibly modified by later configuration, | |
2565 | is available via the function `process-contact'. | |
2566 | ||
2567 | Examples: | |
2568 | ||
2569 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2570 | ||
2571 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2572 | ||
2573 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2574 | ||
2575 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2576 | ||
2577 | usage: (make-serial-process &rest ARGS) */) | |
f66c7cf8 | 2578 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2579 | { |
2580 | int fd = -1; | |
2581 | Lisp_Object proc, contact, port; | |
2582 | struct Lisp_Process *p; | |
2583 | struct gcpro gcpro1; | |
2584 | Lisp_Object name, buffer; | |
2585 | Lisp_Object tem, val; | |
d311d28c | 2586 | ptrdiff_t specpdl_count = -1; |
d888760c GM |
2587 | |
2588 | if (nargs == 0) | |
2589 | return Qnil; | |
2590 | ||
2591 | contact = Flist (nargs, args); | |
2592 | GCPRO1 (contact); | |
2593 | ||
2594 | port = Fplist_get (contact, QCport); | |
2595 | if (NILP (port)) | |
2596 | error ("No port specified"); | |
2597 | CHECK_STRING (port); | |
2598 | ||
2599 | if (NILP (Fplist_member (contact, QCspeed))) | |
2600 | error (":speed not specified"); | |
2601 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2602 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2603 | ||
2604 | name = Fplist_get (contact, QCname); | |
2605 | if (NILP (name)) | |
2606 | name = port; | |
2607 | CHECK_STRING (name); | |
2608 | proc = make_process (name); | |
2609 | specpdl_count = SPECPDL_INDEX (); | |
2610 | record_unwind_protect (make_serial_process_unwind, proc); | |
2611 | p = XPROCESS (proc); | |
2612 | ||
51b59d79 | 2613 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2614 | p->infd = fd; |
2615 | p->outfd = fd; | |
2616 | if (fd > max_process_desc) | |
2617 | max_process_desc = fd; | |
2618 | chan_process[fd] = proc; | |
2619 | ||
2620 | buffer = Fplist_get (contact, QCbuffer); | |
2621 | if (NILP (buffer)) | |
2622 | buffer = name; | |
2623 | buffer = Fget_buffer_create (buffer); | |
6a09a33b PE |
2624 | pset_buffer (p, buffer); |
2625 | ||
2626 | pset_childp (p, contact); | |
2627 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
2628 | pset_type (p, Qserial); | |
2629 | pset_sentinel (p, Fplist_get (contact, QCsentinel)); | |
2630 | pset_filter (p, Fplist_get (contact, QCfilter)); | |
2631 | pset_log (p, Qnil); | |
d888760c GM |
2632 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
2633 | p->kill_without_query = 1; | |
2634 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
6a09a33b | 2635 | pset_command (p, Qt); |
d888760c GM |
2636 | p->pty_flag = 0; |
2637 | ||
4d2b044c | 2638 | if (!EQ (p->command, Qt)) |
d888760c GM |
2639 | { |
2640 | FD_SET (fd, &input_wait_mask); | |
2641 | FD_SET (fd, &non_keyboard_wait_mask); | |
2642 | } | |
2643 | ||
2644 | if (BUFFERP (buffer)) | |
2645 | { | |
4d2b044c | 2646 | set_marker_both (p->mark, buffer, |
d888760c GM |
2647 | BUF_ZV (XBUFFER (buffer)), |
2648 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2649 | } | |
2650 | ||
2651 | tem = Fplist_member (contact, QCcoding); | |
2652 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2653 | tem = Qnil; | |
2654 | ||
2655 | val = Qnil; | |
2656 | if (!NILP (tem)) | |
2657 | { | |
2658 | val = XCAR (XCDR (tem)); | |
2659 | if (CONSP (val)) | |
2660 | val = XCAR (val); | |
2661 | } | |
2662 | else if (!NILP (Vcoding_system_for_read)) | |
2663 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2664 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2665 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2666 | val = Qnil; |
6a09a33b | 2667 | pset_decode_coding_system (p, val); |
d888760c GM |
2668 | |
2669 | val = Qnil; | |
2670 | if (!NILP (tem)) | |
2671 | { | |
2672 | val = XCAR (XCDR (tem)); | |
2673 | if (CONSP (val)) | |
2674 | val = XCDR (val); | |
2675 | } | |
2676 | else if (!NILP (Vcoding_system_for_write)) | |
2677 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2678 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2679 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2680 | val = Qnil; |
6a09a33b | 2681 | pset_encode_coding_system (p, val); |
d888760c GM |
2682 | |
2683 | setup_process_coding_systems (proc); | |
6a09a33b | 2684 | pset_decoding_buf (p, empty_unibyte_string); |
d888760c | 2685 | p->decoding_carryover = 0; |
6a09a33b | 2686 | pset_encoding_buf (p, empty_unibyte_string); |
d888760c GM |
2687 | p->inherit_coding_system_flag |
2688 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2689 | ||
ed3751c8 | 2690 | Fserial_process_configure (nargs, args); |
d888760c GM |
2691 | |
2692 | specpdl_ptr = specpdl + specpdl_count; | |
2693 | ||
2694 | UNGCPRO; | |
2695 | return proc; | |
2696 | } | |
d888760c | 2697 | |
e690ca94 KS |
2698 | /* Create a network stream/datagram client/server process. Treated |
2699 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2700 | differences are in status display and process deletion. A network |
2701 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2702 | stop/continue it and deactivate/close it via delete-process */ |
2703 | ||
177c0ea7 JB |
2704 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2705 | 0, MANY, 0, | |
e690ca94 KS |
2706 | doc: /* Create and return a network server or client process. |
2707 | ||
fa9d4315 | 2708 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2709 | input and output work as for subprocesses and `delete-process' closes |
2710 | a network connection. However, a network process has no process id, | |
d22426e1 | 2711 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2712 | processes. |
2713 | ||
2714 | Arguments are specified as keyword/argument pairs. The following | |
2715 | arguments are defined: | |
2716 | ||
2717 | :name NAME -- NAME is name for process. It is modified if necessary | |
2718 | to make it unique. | |
2719 | ||
2720 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2721 | with the process. Process output goes at end of that buffer, unless | |
2722 | you specify an output stream or filter function to handle the output. | |
2723 | BUFFER may be also nil, meaning that this process is not associated | |
2724 | with any buffer. | |
2725 | ||
2726 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2727 | address. The symbol `local' specifies the local host. If specified | |
2728 | for a server process, it must be a valid name or address for the local | |
2729 | host, and only clients connecting to that address will be accepted. | |
2730 | ||
2731 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2732 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2733 | a random port number is selected for the server. (If Emacs was |
2734 | compiled with getaddrinfo, a port number can also be specified as a | |
2735 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2736 | |
9057ff80 | 2737 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2738 | stream type connection, `datagram' creates a datagram type connection, |
2739 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2740 | |
e690ca94 | 2741 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2742 | service specified by HOST and SERVICE. The default (nil) is to use |
2743 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2744 | and port number specified by HOST and SERVICE. Other address families | |
2745 | supported are: | |
e690ca94 | 2746 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2747 | ipv4 -- use IPv4 address family only. |
2748 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2749 | |
2750 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2751 | This parameter is ignored when opening a client process. When specified | |
2752 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2753 | ||
2754 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2755 | connection. This parameter is ignored when opening a stream server | |
2756 | process. For a datagram server process, it specifies the initial | |
2757 | setting of the remote datagram address. When specified for a client | |
2758 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2759 | ||
2760 | The format of ADDRESS depends on the address family: | |
2761 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2762 | corresponding to numeric IP address A.B.C.D and port number P. | |
2763 | - A local address is represented as a string with the address in the | |
2764 | local address space. | |
2765 | - An "unsupported family" address is represented by a cons (F . AV) | |
2766 | where F is the family number and AV is a vector containing the socket | |
2767 | address data with one element per address data byte. Do not rely on | |
2768 | this format in portable code, as it may depend on implementation | |
2769 | defined constants, data sizes, and data structure alignment. | |
2770 | ||
6b61353c KH |
2771 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2772 | system used for both reading and writing for this process. If CODING | |
2773 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2774 | ENCODING is used for writing. | |
e690ca94 KS |
2775 | |
2776 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2777 | return without waiting for the connection to complete; instead, the | |
2778 | sentinel function will be called with second arg matching "open" (if | |
2779 | successful) or "failed" when the connect completes. Default is to use | |
2780 | a blocking connect (i.e. wait) for stream type connections. | |
2781 | ||
2782 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2783 | running when Emacs is exited. |
e690ca94 KS |
2784 | |
2785 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2786 | In the stopped state, a server process does not accept new | |
2787 | connections, and a client process does not handle incoming traffic. | |
2788 | The stopped state is cleared by `continue-process' and set by | |
2789 | `stop-process'. | |
2790 | ||
2791 | :filter FILTER -- Install FILTER as the process filter. | |
2792 | ||
7392e23c KS |
2793 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2794 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2795 | If this keyword is not specified, the strings are multibyte if |
016a35df | 2796 | the default value of `enable-multibyte-characters' is non-nil. |
03f04413 | 2797 | |
e690ca94 KS |
2798 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2799 | ||
2800 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2801 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2802 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2803 | is the server process, CLIENT is the new process for the connection, | |
2804 | and MESSAGE is a string. | |
2805 | ||
faa7db08 | 2806 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2807 | |
6b61353c | 2808 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2809 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2810 | If QLEN is an integer, it is used as the max. length of the server's |
2811 | pending connection queue (also known as the backlog); the default | |
2812 | queue length is 5. Default is to create a client process. | |
2813 | ||
2814 | The following network options can be specified for this connection: | |
2815 | ||
2816 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2817 | :dontroute BOOL -- Only send to directly connected hosts. | |
2818 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2819 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2820 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2821 | :priority INT -- Set protocol defined priority for sent packets. | |
2822 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2823 | (this is allowed by default for a server process). | |
2824 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2825 | special privileges on some systems. | |
2826 | ||
2827 | Consult the relevant system programmer's manual pages for more | |
2828 | information on using these options. | |
2829 | ||
2830 | ||
2831 | A server process will listen for and accept connections from clients. | |
2832 | When a client connection is accepted, a new network process is created | |
2833 | for the connection with the following parameters: | |
e690ca94 | 2834 | |
e690ca94 KS |
2835 | - The client's process name is constructed by concatenating the server |
2836 | process' NAME and a client identification string. | |
2837 | - If the FILTER argument is non-nil, the client process will not get a | |
2838 | separate process buffer; otherwise, the client's process buffer is a newly | |
2839 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2840 | NAME concatenated with the client identification string. |
e690ca94 KS |
2841 | - The connection type and the process filter and sentinel parameters are |
2842 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2843 | - The client process' contact info is set according to the client's | |
2844 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2845 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2846 | |
2847 | Notice that the FILTER and SENTINEL args are never used directly by | |
2848 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2849 | the server process, but via the optional :log function, accepted (and |
2850 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2851 | |
365aee82 KS |
2852 | The original argument list, modified with the actual connection |
2853 | information, is available via the `process-contact' function. | |
365aee82 | 2854 | |
fa9d4315 | 2855 | usage: (make-network-process &rest ARGS) */) |
f66c7cf8 | 2856 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 JB |
2857 | { |
2858 | Lisp_Object proc; | |
e690ca94 KS |
2859 | Lisp_Object contact; |
2860 | struct Lisp_Process *p; | |
70dbdb36 | 2861 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2862 | struct addrinfo ai, *res, *lres; |
e1652a86 | 2863 | struct addrinfo hints; |
8ea90aa3 DN |
2864 | const char *portstring; |
2865 | char portbuf[128]; | |
70dbdb36 | 2866 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2867 | struct _emacs_addrinfo |
2868 | { | |
2869 | int ai_family; | |
2870 | int ai_socktype; | |
2871 | int ai_protocol; | |
2872 | int ai_addrlen; | |
2873 | struct sockaddr *ai_addr; | |
2874 | struct _emacs_addrinfo *ai_next; | |
2875 | } ai, *res, *lres; | |
418b48fd | 2876 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2877 | struct sockaddr_in address_in; |
2878 | #ifdef HAVE_LOCAL_SOCKETS | |
2879 | struct sockaddr_un address_un; | |
2880 | #endif | |
2881 | int port; | |
dd2a17ab KS |
2882 | int ret = 0; |
2883 | int xerrno = 0; | |
418b48fd | 2884 | int s = -1, outch, inch; |
e690ca94 | 2885 | struct gcpro gcpro1; |
d311d28c PE |
2886 | ptrdiff_t count = SPECPDL_INDEX (); |
2887 | ptrdiff_t count1; | |
e690ca94 KS |
2888 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2889 | Lisp_Object tem; | |
2890 | Lisp_Object name, buffer, host, service, address; | |
2891 | Lisp_Object filter, sentinel; | |
2892 | int is_non_blocking_client = 0; | |
6b61353c | 2893 | int is_server = 0, backlog = 5; |
9057ff80 | 2894 | int socktype; |
e690ca94 KS |
2895 | int family = -1; |
2896 | ||
2897 | if (nargs == 0) | |
2898 | return Qnil; | |
dd2a17ab | 2899 | |
e690ca94 KS |
2900 | /* Save arguments for process-contact and clone-process. */ |
2901 | contact = Flist (nargs, args); | |
2902 | GCPRO1 (contact); | |
2903 | ||
bff3ed0a RS |
2904 | #ifdef WINDOWSNT |
2905 | /* Ensure socket support is loaded if available. */ | |
2906 | init_winsock (TRUE); | |
2907 | #endif | |
2908 | ||
9057ff80 KS |
2909 | /* :type TYPE (nil: stream, datagram */ |
2910 | tem = Fplist_get (contact, QCtype); | |
2911 | if (NILP (tem)) | |
2912 | socktype = SOCK_STREAM; | |
2913 | #ifdef DATAGRAM_SOCKETS | |
2914 | else if (EQ (tem, Qdatagram)) | |
2915 | socktype = SOCK_DGRAM; | |
f00c449b SM |
2916 | #endif |
2917 | #ifdef HAVE_SEQPACKET | |
2918 | else if (EQ (tem, Qseqpacket)) | |
2919 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 2920 | #endif |
9057ff80 KS |
2921 | else |
2922 | error ("Unsupported connection type"); | |
e690ca94 KS |
2923 | |
2924 | /* :server BOOL */ | |
2925 | tem = Fplist_get (contact, QCserver); | |
2926 | if (!NILP (tem)) | |
2927 | { | |
75728599 JR |
2928 | /* Don't support network sockets when non-blocking mode is |
2929 | not available, since a blocked Emacs is not useful. */ | |
5e617bc2 | 2930 | #if !defined (O_NONBLOCK) && !defined (O_NDELAY) |
e690ca94 KS |
2931 | error ("Network servers not supported"); |
2932 | #else | |
2933 | is_server = 1; | |
d311d28c | 2934 | if (TYPE_RANGED_INTEGERP (int, tem)) |
6b61353c | 2935 | backlog = XINT (tem); |
e690ca94 KS |
2936 | #endif |
2937 | } | |
2938 | ||
2939 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2940 | QCaddress = is_server ? QClocal : QCremote; | |
2941 | ||
d7e344cd | 2942 | /* :nowait BOOL */ |
84b31826 | 2943 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
2944 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
2945 | { | |
2946 | #ifndef NON_BLOCKING_CONNECT | |
2947 | error ("Non-blocking connect not supported"); | |
2948 | #else | |
2949 | is_non_blocking_client = 1; | |
2950 | #endif | |
2951 | } | |
2952 | ||
2953 | name = Fplist_get (contact, QCname); | |
2954 | buffer = Fplist_get (contact, QCbuffer); | |
2955 | filter = Fplist_get (contact, QCfilter); | |
2956 | sentinel = Fplist_get (contact, QCsentinel); | |
2957 | ||
b7826503 | 2958 | CHECK_STRING (name); |
e690ca94 | 2959 | |
e690ca94 KS |
2960 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
2961 | ai.ai_socktype = socktype; | |
2962 | ai.ai_protocol = 0; | |
2963 | ai.ai_next = NULL; | |
2964 | res = &ai; | |
a319f7c1 | 2965 | |
e690ca94 KS |
2966 | /* :local ADDRESS or :remote ADDRESS */ |
2967 | address = Fplist_get (contact, QCaddress); | |
2968 | if (!NILP (address)) | |
a319f7c1 | 2969 | { |
e690ca94 KS |
2970 | host = service = Qnil; |
2971 | ||
2972 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2973 | error ("Malformed :address"); | |
2974 | ai.ai_family = family; | |
2975 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2976 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2977 | goto open_socket; | |
a319f7c1 | 2978 | } |
e690ca94 KS |
2979 | |
2980 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2981 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 2982 | if (NILP (tem)) |
a319f7c1 | 2983 | { |
5e617bc2 | 2984 | #if defined (HAVE_GETADDRINFO) && defined (AF_INET6) |
e1652a86 KS |
2985 | family = AF_UNSPEC; |
2986 | #else | |
2987 | family = AF_INET; | |
e690ca94 | 2988 | #endif |
a319f7c1 | 2989 | } |
e1652a86 KS |
2990 | #ifdef HAVE_LOCAL_SOCKETS |
2991 | else if (EQ (tem, Qlocal)) | |
2992 | family = AF_LOCAL; | |
2993 | #endif | |
2994 | #ifdef AF_INET6 | |
2995 | else if (EQ (tem, Qipv6)) | |
2996 | family = AF_INET6; | |
2997 | #endif | |
2998 | else if (EQ (tem, Qipv4)) | |
2999 | family = AF_INET; | |
d311d28c | 3000 | else if (TYPE_RANGED_INTEGERP (int, tem)) |
e1652a86 KS |
3001 | family = XINT (tem); |
3002 | else | |
e690ca94 | 3003 | error ("Unknown address family"); |
e1652a86 | 3004 | |
e690ca94 KS |
3005 | ai.ai_family = family; |
3006 | ||
3007 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3008 | service = Fplist_get (contact, QCservice); | |
3009 | ||
66a9f7f4 SM |
3010 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3011 | host = Fplist_get (contact, QChost); | |
3012 | if (!NILP (host)) | |
3013 | { | |
3014 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
3015 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
3016 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
3017 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
3018 | CHECK_STRING (host); |
3019 | } | |
3020 | ||
e690ca94 KS |
3021 | #ifdef HAVE_LOCAL_SOCKETS |
3022 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3023 | { |
66a9f7f4 SM |
3024 | if (!NILP (host)) |
3025 | { | |
3026 | message (":family local ignores the :host \"%s\" property", | |
3027 | SDATA (host)); | |
3028 | contact = Fplist_put (contact, QChost, Qnil); | |
3029 | host = Qnil; | |
3030 | } | |
b7826503 | 3031 | CHECK_STRING (service); |
72af86bd | 3032 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3033 | address_un.sun_family = AF_LOCAL; |
e99a530f PE |
3034 | if (sizeof address_un.sun_path <= SBYTES (service)) |
3035 | error ("Service name too long"); | |
3036 | strcpy (address_un.sun_path, SSDATA (service)); | |
e690ca94 KS |
3037 | ai.ai_addr = (struct sockaddr *) &address_un; |
3038 | ai.ai_addrlen = sizeof address_un; | |
3039 | goto open_socket; | |
d0d6b7c5 | 3040 | } |
e690ca94 | 3041 | #endif |
a319f7c1 | 3042 | |
798b64bb KH |
3043 | /* Slow down polling to every ten seconds. |
3044 | Some kernels have a bug which causes retrying connect to fail | |
3045 | after a connect. Polling can interfere with gethostbyname too. */ | |
3046 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3047 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3048 | { |
3049 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3050 | bind_polling_period (10); | |
3051 | } | |
798b64bb KH |
3052 | #endif |
3053 | ||
a319f7c1 | 3054 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3055 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3056 | Otherwise, use getservbyname to lookup the service. */ | |
3057 | if (!NILP (host)) | |
3058 | { | |
3059 | ||
3060 | /* SERVICE can either be a string or int. | |
3061 | Convert to a C string for later use by getaddrinfo. */ | |
3062 | if (EQ (service, Qt)) | |
3063 | portstring = "0"; | |
3064 | else if (INTEGERP (service)) | |
3065 | { | |
c2982e87 | 3066 | sprintf (portbuf, "%"pI"d", XINT (service)); |
e690ca94 KS |
3067 | portstring = portbuf; |
3068 | } | |
3069 | else | |
3070 | { | |
3071 | CHECK_STRING (service); | |
42a5b22f | 3072 | portstring = SSDATA (service); |
e690ca94 KS |
3073 | } |
3074 | ||
3075 | immediate_quit = 1; | |
3076 | QUIT; | |
3077 | memset (&hints, 0, sizeof (hints)); | |
3078 | hints.ai_flags = 0; | |
e1652a86 | 3079 | hints.ai_family = family; |
e690ca94 KS |
3080 | hints.ai_socktype = socktype; |
3081 | hints.ai_protocol = 0; | |
08116b48 CY |
3082 | |
3083 | #ifdef HAVE_RES_INIT | |
3084 | res_init (); | |
3085 | #endif | |
3086 | ||
42a5b22f | 3087 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3088 | if (ret) |
f6270f62 | 3089 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3090 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3091 | #else |
42a5b22f | 3092 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3093 | #endif |
e690ca94 | 3094 | immediate_quit = 0; |
a319f7c1 | 3095 | |
e690ca94 KS |
3096 | goto open_socket; |
3097 | } | |
3098 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3099 | |
e690ca94 KS |
3100 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3101 | has been specified (e.g. for a local server process). */ | |
3102 | ||
3103 | if (EQ (service, Qt)) | |
3104 | port = 0; | |
3105 | else if (INTEGERP (service)) | |
3106 | port = htons ((unsigned short) XINT (service)); | |
3107 | else | |
616da37c | 3108 | { |
e690ca94 KS |
3109 | struct servent *svc_info; |
3110 | CHECK_STRING (service); | |
42a5b22f | 3111 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3112 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3113 | if (svc_info == 0) | |
d5db4077 | 3114 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3115 | port = svc_info->s_port; |
3116 | } | |
3117 | ||
72af86bd | 3118 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3119 | address_in.sin_family = family; |
3120 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3121 | address_in.sin_port = port; | |
3122 | ||
3123 | #ifndef HAVE_GETADDRINFO | |
3124 | if (!NILP (host)) | |
3125 | { | |
3126 | struct hostent *host_info_ptr; | |
3127 | ||
c5e87d10 | 3128 | /* gethostbyname may fail with TRY_AGAIN, but we don't honor that, |
f3d9532b | 3129 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3130 | immediate_quit = 1; |
3131 | QUIT; | |
08116b48 CY |
3132 | |
3133 | #ifdef HAVE_RES_INIT | |
3134 | res_init (); | |
3135 | #endif | |
3136 | ||
d5db4077 | 3137 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3138 | immediate_quit = 0; |
177c0ea7 | 3139 | |
e690ca94 KS |
3140 | if (host_info_ptr) |
3141 | { | |
72af86bd AS |
3142 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3143 | host_info_ptr->h_length); | |
e690ca94 KS |
3144 | family = host_info_ptr->h_addrtype; |
3145 | address_in.sin_family = family; | |
3146 | } | |
3147 | else | |
3148 | /* Attempt to interpret host as numeric inet address */ | |
3149 | { | |
4624371d | 3150 | unsigned long numeric_addr; |
51b59d79 | 3151 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3152 | if (numeric_addr == -1) |
d5db4077 | 3153 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3154 | |
72af86bd AS |
3155 | memcpy (&address_in.sin_addr, &numeric_addr, |
3156 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3157 | } |
d0d6b7c5 | 3158 | |
e690ca94 | 3159 | } |
dd2a17ab | 3160 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3161 | |
e690ca94 KS |
3162 | ai.ai_family = family; |
3163 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3164 | ai.ai_addrlen = sizeof address_in; | |
3165 | ||
3166 | open_socket: | |
3167 | ||
dd2a17ab | 3168 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3169 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3170 | s = -1; |
457a9bee | 3171 | |
dd2a17ab KS |
3172 | for (lres = res; lres; lres = lres->ai_next) |
3173 | { | |
f66c7cf8 | 3174 | ptrdiff_t optn; |
c5101a77 | 3175 | int optbits; |
6b61353c | 3176 | |
4dc343ee | 3177 | #ifdef WINDOWSNT |
649dbf36 | 3178 | retry_connect: |
4dc343ee | 3179 | #endif |
649dbf36 | 3180 | |
dd2a17ab KS |
3181 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3182 | if (s < 0) | |
3183 | { | |
3184 | xerrno = errno; | |
3185 | continue; | |
3186 | } | |
0f2ee0c1 | 3187 | |
e690ca94 KS |
3188 | #ifdef DATAGRAM_SOCKETS |
3189 | if (!is_server && socktype == SOCK_DGRAM) | |
3190 | break; | |
3191 | #endif /* DATAGRAM_SOCKETS */ | |
3192 | ||
dd2a17ab | 3193 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3194 | if (is_non_blocking_client) |
dd2a17ab KS |
3195 | { |
3196 | #ifdef O_NONBLOCK | |
3197 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3198 | #else | |
3199 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3200 | #endif | |
3201 | if (ret < 0) | |
3202 | { | |
3203 | xerrno = errno; | |
3204 | emacs_close (s); | |
3205 | s = -1; | |
3206 | continue; | |
3207 | } | |
3208 | } | |
3209 | #endif | |
177c0ea7 | 3210 | |
dd2a17ab | 3211 | /* Make us close S if quit. */ |
dd2a17ab KS |
3212 | record_unwind_protect (close_file_unwind, make_number (s)); |
3213 | ||
6b61353c KH |
3214 | /* Parse network options in the arg list. |
3215 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3216 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3217 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3218 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3219 | ||
e690ca94 KS |
3220 | if (is_server) |
3221 | { | |
3222 | /* Configure as a server socket. */ | |
6b61353c KH |
3223 | |
3224 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3225 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3226 | #ifdef HAVE_LOCAL_SOCKETS |
3227 | if (family != AF_LOCAL) | |
3228 | #endif | |
6b61353c KH |
3229 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3230 | { | |
3231 | int optval = 1; | |
3232 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3233 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3234 | } | |
177c0ea7 | 3235 | |
e690ca94 KS |
3236 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3237 | report_file_error ("Cannot bind server socket", Qnil); | |
3238 | ||
3239 | #ifdef HAVE_GETSOCKNAME | |
3240 | if (EQ (service, Qt)) | |
3241 | { | |
3242 | struct sockaddr_in sa1; | |
401bf9b4 | 3243 | socklen_t len1 = sizeof (sa1); |
e690ca94 KS |
3244 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3245 | { | |
3246 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3247 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3248 | contact = Fplist_put (contact, QCservice, service); |
3249 | } | |
3250 | } | |
3251 | #endif | |
3252 | ||
84b31826 | 3253 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3254 | report_file_error ("Cannot listen on server socket", Qnil); |
3255 | ||
3256 | break; | |
3257 | } | |
3258 | ||
dd2a17ab KS |
3259 | immediate_quit = 1; |
3260 | QUIT; | |
3261 | ||
dd2a17ab KS |
3262 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3263 | xerrno = errno; | |
3264 | ||
dd2a17ab KS |
3265 | if (ret == 0 || xerrno == EISCONN) |
3266 | { | |
dd2a17ab KS |
3267 | /* The unwind-protect will be discarded afterwards. |
3268 | Likewise for immediate_quit. */ | |
3269 | break; | |
3270 | } | |
3271 | ||
3272 | #ifdef NON_BLOCKING_CONNECT | |
3273 | #ifdef EINPROGRESS | |
e690ca94 | 3274 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3275 | break; |
3276 | #else | |
3277 | #ifdef EWOULDBLOCK | |
e690ca94 | 3278 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3279 | break; |
3280 | #endif | |
3281 | #endif | |
3282 | #endif | |
649dbf36 CY |
3283 | |
3284 | #ifndef WINDOWSNT | |
cd591dbc HE |
3285 | if (xerrno == EINTR) |
3286 | { | |
3287 | /* Unlike most other syscalls connect() cannot be called | |
3288 | again. (That would return EALREADY.) The proper way to | |
d35af63c | 3289 | wait for completion is pselect(). */ |
401bf9b4 PE |
3290 | int sc; |
3291 | socklen_t len; | |
cd591dbc HE |
3292 | SELECT_TYPE fdset; |
3293 | retry_select: | |
3294 | FD_ZERO (&fdset); | |
3295 | FD_SET (s, &fdset); | |
3296 | QUIT; | |
d35af63c | 3297 | sc = pselect (s + 1, NULL, &fdset, NULL, NULL, NULL); |
cd591dbc HE |
3298 | if (sc == -1) |
3299 | { | |
649dbf36 | 3300 | if (errno == EINTR) |
cd591dbc | 3301 | goto retry_select; |
649dbf36 | 3302 | else |
cd591dbc HE |
3303 | report_file_error ("select failed", Qnil); |
3304 | } | |
3305 | eassert (sc > 0); | |
649dbf36 CY |
3306 | |
3307 | len = sizeof xerrno; | |
3308 | eassert (FD_ISSET (s, &fdset)); | |
3309 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3310 | report_file_error ("getsockopt failed", Qnil); | |
3311 | if (xerrno) | |
3312 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3313 | else | |
3314 | break; | |
cd591dbc | 3315 | } |
649dbf36 | 3316 | #endif /* !WINDOWSNT */ |
e333e864 | 3317 | |
0f2ee0c1 RS |
3318 | immediate_quit = 0; |
3319 | ||
dd2a17ab | 3320 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3321 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3322 | emacs_close (s); |
dd2a17ab | 3323 | s = -1; |
649dbf36 CY |
3324 | |
3325 | #ifdef WINDOWSNT | |
3326 | if (xerrno == EINTR) | |
3327 | goto retry_connect; | |
3328 | #endif | |
dd2a17ab | 3329 | } |
457a9bee | 3330 | |
e690ca94 KS |
3331 | if (s >= 0) |
3332 | { | |
3333 | #ifdef DATAGRAM_SOCKETS | |
3334 | if (socktype == SOCK_DGRAM) | |
3335 | { | |
3336 | if (datagram_address[s].sa) | |
1088b922 | 3337 | emacs_abort (); |
23f86fce | 3338 | datagram_address[s].sa = xmalloc (lres->ai_addrlen); |
e690ca94 KS |
3339 | datagram_address[s].len = lres->ai_addrlen; |
3340 | if (is_server) | |
3341 | { | |
3342 | Lisp_Object remote; | |
72af86bd | 3343 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3344 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3345 | { | |
3346 | int rfamily, rlen; | |
3347 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3348 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3349 | conv_lisp_to_sockaddr (rfamily, remote, | |
3350 | datagram_address[s].sa, rlen); | |
3351 | } | |
3352 | } | |
3353 | else | |
72af86bd | 3354 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3355 | } |
3356 | #endif | |
177c0ea7 | 3357 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3358 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3359 | #ifdef HAVE_GETSOCKNAME |
3360 | if (!is_server) | |
3361 | { | |
3362 | struct sockaddr_in sa1; | |
401bf9b4 | 3363 | socklen_t len1 = sizeof (sa1); |
2185db04 KS |
3364 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3365 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3366 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3367 | } |
3368 | #endif | |
e690ca94 KS |
3369 | } |
3370 | ||
54b3b62f YM |
3371 | immediate_quit = 0; |
3372 | ||
dd2a17ab | 3373 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3374 | if (res != &ai) |
54b3b62f | 3375 | { |
4d7e6e51 | 3376 | block_input (); |
54b3b62f | 3377 | freeaddrinfo (res); |
4d7e6e51 | 3378 | unblock_input (); |
54b3b62f | 3379 | } |
dd2a17ab KS |
3380 | #endif |
3381 | ||
e690ca94 KS |
3382 | /* Discard the unwind protect for closing S, if any. */ |
3383 | specpdl_ptr = specpdl + count1; | |
3384 | ||
3385 | /* Unwind bind_polling_period and request_sigio. */ | |
3386 | unbind_to (count, Qnil); | |
3387 | ||
dd2a17ab KS |
3388 | if (s < 0) |
3389 | { | |
dd2a17ab KS |
3390 | /* If non-blocking got this far - and failed - assume non-blocking is |
3391 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3392 | the normal blocking calls to open-network-stream handles this error |
3393 | better. */ | |
3394 | if (is_non_blocking_client) | |
dd2a17ab | 3395 | return Qnil; |
dd2a17ab | 3396 | |
d0d6b7c5 | 3397 | errno = xerrno; |
e690ca94 KS |
3398 | if (is_server) |
3399 | report_file_error ("make server process failed", contact); | |
3400 | else | |
3401 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3402 | } |
44ade2e9 | 3403 | |
d0d6b7c5 | 3404 | inch = s; |
59f23005 | 3405 | outch = s; |
d0d6b7c5 JB |
3406 | |
3407 | if (!NILP (buffer)) | |
3408 | buffer = Fget_buffer_create (buffer); | |
3409 | proc = make_process (name); | |
3410 | ||
3411 | chan_process[inch] = proc; | |
3412 | ||
3413 | #ifdef O_NONBLOCK | |
3414 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3415 | #else | |
3416 | #ifdef O_NDELAY | |
3417 | fcntl (inch, F_SETFL, O_NDELAY); | |
3418 | #endif | |
3419 | #endif | |
3420 | ||
e690ca94 KS |
3421 | p = XPROCESS (proc); |
3422 | ||
6a09a33b PE |
3423 | pset_childp (p, contact); |
3424 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
3425 | pset_type (p, Qnetwork); | |
177c0ea7 | 3426 | |
6a09a33b PE |
3427 | pset_buffer (p, buffer); |
3428 | pset_sentinel (p, sentinel); | |
3429 | pset_filter (p, filter); | |
3430 | pset_log (p, Fplist_get (contact, QClog)); | |
e690ca94 | 3431 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
60f0fb11 | 3432 | p->kill_without_query = 1; |
e690ca94 | 3433 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
6a09a33b | 3434 | pset_command (p, Qt); |
6bfd98e7 | 3435 | p->pid = 0; |
60f0fb11 SM |
3436 | p->infd = inch; |
3437 | p->outfd = outch; | |
84b31826 | 3438 | if (is_server && socktype != SOCK_DGRAM) |
6a09a33b | 3439 | pset_status (p, Qlisten); |
dd2a17ab | 3440 | |
f523e0c3 SM |
3441 | /* Make the process marker point into the process buffer (if any). */ |
3442 | if (BUFFERP (buffer)) | |
4d2b044c | 3443 | set_marker_both (p->mark, buffer, |
f523e0c3 SM |
3444 | BUF_ZV (XBUFFER (buffer)), |
3445 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3446 | ||
dd2a17ab | 3447 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3448 | if (is_non_blocking_client) |
dd2a17ab KS |
3449 | { |
3450 | /* We may get here if connect did succeed immediately. However, | |
3451 | in that case, we still need to signal this like a non-blocking | |
3452 | connection. */ | |
6a09a33b | 3453 | pset_status (p, Qconnect); |
dd2a17ab KS |
3454 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3455 | { | |
3456 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3457 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3458 | num_pending_connects++; |
3459 | } | |
3460 | } | |
3461 | else | |
3462 | #endif | |
e690ca94 KS |
3463 | /* A server may have a client filter setting of Qt, but it must |
3464 | still listen for incoming connects unless it is stopped. */ | |
4d2b044c DA |
3465 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
3466 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3467 | { |
3468 | FD_SET (inch, &input_wait_mask); | |
3469 | FD_SET (inch, &non_keyboard_wait_mask); | |
3470 | } | |
3471 | ||
7d0e672e RS |
3472 | if (inch > max_process_desc) |
3473 | max_process_desc = inch; | |
d0d6b7c5 | 3474 | |
e690ca94 KS |
3475 | tem = Fplist_member (contact, QCcoding); |
3476 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3477 | tem = Qnil; /* No error message (too late!). */ | |
3478 | ||
67918941 RS |
3479 | { |
3480 | /* Setup coding systems for communicating with the network stream. */ | |
dbf31225 | 3481 | struct gcpro gcpro1; |
67918941 RS |
3482 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
3483 | Lisp_Object coding_systems = Qt; | |
b93aacde | 3484 | Lisp_Object fargs[5], val; |
67918941 | 3485 | |
e690ca94 | 3486 | if (!NILP (tem)) |
6b61353c KH |
3487 | { |
3488 | val = XCAR (XCDR (tem)); | |
3489 | if (CONSP (val)) | |
3490 | val = XCAR (val); | |
3491 | } | |
e690ca94 | 3492 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3493 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3494 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3495 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3496 | /* We dare not decode end-of-line format by setting VAL to |
3497 | Qraw_text, because the existing Emacs Lisp libraries | |
9858f6c3 | 3498 | assume that they receive bare code including a sequence of |
67918941 RS |
3499 | CR LF. */ |
3500 | val = Qnil; | |
3501 | else | |
3502 | { | |
991234f0 KS |
3503 | if (NILP (host) || NILP (service)) |
3504 | coding_systems = Qnil; | |
3505 | else | |
3506 | { | |
b93aacde PE |
3507 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3508 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3509 | GCPRO1 (proc); |
b93aacde | 3510 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3511 | UNGCPRO; |
991234f0 | 3512 | } |
67918941 | 3513 | if (CONSP (coding_systems)) |
70949dac | 3514 | val = XCAR (coding_systems); |
67918941 | 3515 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3516 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3517 | else |
3518 | val = Qnil; | |
3519 | } | |
6a09a33b | 3520 | pset_decode_coding_system (p, val); |
0fa1789e | 3521 | |
e690ca94 | 3522 | if (!NILP (tem)) |
6b61353c KH |
3523 | { |
3524 | val = XCAR (XCDR (tem)); | |
3525 | if (CONSP (val)) | |
3526 | val = XCDR (val); | |
3527 | } | |
e690ca94 | 3528 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3529 | val = Vcoding_system_for_write; |
4b4deea2 | 3530 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3531 | val = Qnil; |
3532 | else | |
3533 | { | |
3534 | if (EQ (coding_systems, Qt)) | |
3535 | { | |
991234f0 KS |
3536 | if (NILP (host) || NILP (service)) |
3537 | coding_systems = Qnil; | |
3538 | else | |
3539 | { | |
b93aacde PE |
3540 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3541 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3542 | GCPRO1 (proc); |
b93aacde | 3543 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3544 | UNGCPRO; |
991234f0 | 3545 | } |
67918941 RS |
3546 | } |
3547 | if (CONSP (coding_systems)) | |
70949dac | 3548 | val = XCDR (coding_systems); |
67918941 | 3549 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3550 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3551 | else |
3552 | val = Qnil; | |
3553 | } | |
6a09a33b | 3554 | pset_encode_coding_system (p, val); |
67918941 | 3555 | } |
03f04413 | 3556 | setup_process_coding_systems (proc); |
0fa1789e | 3557 | |
6a09a33b | 3558 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 3559 | p->decoding_carryover = 0; |
6a09a33b | 3560 | pset_encoding_buf (p, empty_unibyte_string); |
0fa1789e | 3561 | |
e690ca94 | 3562 | p->inherit_coding_system_flag |
e6fca843 | 3563 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3564 | |
d0d6b7c5 JB |
3565 | UNGCPRO; |
3566 | return proc; | |
3567 | } | |
d0d6b7c5 | 3568 | |
6b61353c | 3569 | \f |
5e617bc2 | 3570 | #if defined (HAVE_NET_IF_H) |
6b61353c KH |
3571 | |
3572 | #ifdef SIOCGIFCONF | |
3573 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3574 | doc: /* Return an alist of all network interfaces and their network address. | |
3575 | Each element is a cons, the car of which is a string containing the | |
3576 | interface name, and the cdr is the network address in internal | |
3577 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3578 | (void) |
6b61353c KH |
3579 | { |
3580 | struct ifconf ifconf; | |
377538cb JD |
3581 | struct ifreq *ifreq; |
3582 | void *buf = NULL; | |
70c60eb2 PE |
3583 | ptrdiff_t buf_size = 512; |
3584 | int s, i; | |
6b61353c KH |
3585 | Lisp_Object res; |
3586 | ||
3587 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3588 | if (s < 0) | |
3589 | return Qnil; | |
3590 | ||
76667214 | 3591 | do |
6b61353c | 3592 | { |
76667214 PE |
3593 | buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1); |
3594 | ifconf.ifc_buf = buf; | |
3595 | ifconf.ifc_len = buf_size; | |
156bffbe AS |
3596 | if (ioctl (s, SIOCGIFCONF, &ifconf)) |
3597 | { | |
3598 | close (s); | |
76667214 | 3599 | xfree (buf); |
156bffbe AS |
3600 | return Qnil; |
3601 | } | |
6b61353c | 3602 | } |
76667214 | 3603 | while (ifconf.ifc_len == buf_size); |
6b61353c KH |
3604 | |
3605 | close (s); | |
6b61353c KH |
3606 | |
3607 | res = Qnil; | |
156bffbe AS |
3608 | ifreq = ifconf.ifc_req; |
3609 | while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len) | |
6b61353c | 3610 | { |
377538cb JD |
3611 | struct ifreq *ifq = ifreq; |
3612 | #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN | |
156bffbe AS |
3613 | #define SIZEOF_IFREQ(sif) \ |
3614 | ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \ | |
3615 | ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len) | |
377538cb JD |
3616 | |
3617 | int len = SIZEOF_IFREQ (ifq); | |
3618 | #else | |
3619 | int len = sizeof (*ifreq); | |
3620 | #endif | |
6b61353c | 3621 | char namebuf[sizeof (ifq->ifr_name) + 1]; |
377538cb | 3622 | i += len; |
156bffbe | 3623 | ifreq = (struct ifreq *) ((char *) ifreq + len); |
377538cb | 3624 | |
6b61353c KH |
3625 | if (ifq->ifr_addr.sa_family != AF_INET) |
3626 | continue; | |
377538cb | 3627 | |
72af86bd | 3628 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3629 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3630 | res = Fcons (Fcons (build_string (namebuf), | |
3631 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3632 | sizeof (struct sockaddr))), | |
3633 | res); | |
3634 | } | |
3635 | ||
377538cb | 3636 | xfree (buf); |
6b61353c KH |
3637 | return res; |
3638 | } | |
3639 | #endif /* SIOCGIFCONF */ | |
3640 | ||
5e617bc2 | 3641 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
6b61353c KH |
3642 | |
3643 | struct ifflag_def { | |
3644 | int flag_bit; | |
91433552 | 3645 | const char *flag_sym; |
6b61353c KH |
3646 | }; |
3647 | ||
91433552 | 3648 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3649 | #ifdef IFF_UP |
3650 | { IFF_UP, "up" }, | |
3651 | #endif | |
3652 | #ifdef IFF_BROADCAST | |
3653 | { IFF_BROADCAST, "broadcast" }, | |
3654 | #endif | |
3655 | #ifdef IFF_DEBUG | |
3656 | { IFF_DEBUG, "debug" }, | |
3657 | #endif | |
3658 | #ifdef IFF_LOOPBACK | |
3659 | { IFF_LOOPBACK, "loopback" }, | |
3660 | #endif | |
3661 | #ifdef IFF_POINTOPOINT | |
3662 | { IFF_POINTOPOINT, "pointopoint" }, | |
3663 | #endif | |
3664 | #ifdef IFF_RUNNING | |
3665 | { IFF_RUNNING, "running" }, | |
3666 | #endif | |
3667 | #ifdef IFF_NOARP | |
3668 | { IFF_NOARP, "noarp" }, | |
3669 | #endif | |
3670 | #ifdef IFF_PROMISC | |
3671 | { IFF_PROMISC, "promisc" }, | |
3672 | #endif | |
3673 | #ifdef IFF_NOTRAILERS | |
377538cb JD |
3674 | #ifdef NS_IMPL_COCOA |
3675 | /* Really means smart, notrailers is obsolete */ | |
3676 | { IFF_NOTRAILERS, "smart" }, | |
3677 | #else | |
6b61353c KH |
3678 | { IFF_NOTRAILERS, "notrailers" }, |
3679 | #endif | |
377538cb | 3680 | #endif |
6b61353c KH |
3681 | #ifdef IFF_ALLMULTI |
3682 | { IFF_ALLMULTI, "allmulti" }, | |
3683 | #endif | |
3684 | #ifdef IFF_MASTER | |
3685 | { IFF_MASTER, "master" }, | |
3686 | #endif | |
3687 | #ifdef IFF_SLAVE | |
3688 | { IFF_SLAVE, "slave" }, | |
3689 | #endif | |
3690 | #ifdef IFF_MULTICAST | |
3691 | { IFF_MULTICAST, "multicast" }, | |
3692 | #endif | |
3693 | #ifdef IFF_PORTSEL | |
3694 | { IFF_PORTSEL, "portsel" }, | |
3695 | #endif | |
3696 | #ifdef IFF_AUTOMEDIA | |
3697 | { IFF_AUTOMEDIA, "automedia" }, | |
3698 | #endif | |
3699 | #ifdef IFF_DYNAMIC | |
3700 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3701 | #endif |
2026418c YM |
3702 | #ifdef IFF_OACTIVE |
3703 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3704 | #endif |
3705 | #ifdef IFF_SIMPLEX | |
3706 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3707 | #endif | |
3708 | #ifdef IFF_LINK0 | |
3709 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3710 | #endif | |
3711 | #ifdef IFF_LINK1 | |
3712 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3713 | #endif | |
3714 | #ifdef IFF_LINK2 | |
3715 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3716 | #endif |
3717 | { 0, 0 } | |
3718 | }; | |
3719 | ||
3720 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3721 | doc: /* Return information about network interface named IFNAME. | |
3722 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3723 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
e4920bc9 | 3724 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and |
6b61353c | 3725 | FLAGS is the current flags of the interface. */) |
5842a27b | 3726 | (Lisp_Object ifname) |
6b61353c KH |
3727 | { |
3728 | struct ifreq rq; | |
3729 | Lisp_Object res = Qnil; | |
3730 | Lisp_Object elt; | |
3731 | int s; | |
3732 | int any = 0; | |
0a0d27fb PE |
3733 | #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \ |
3734 | && defined HAVE_GETIFADDRS && defined LLADDR) | |
377538cb JD |
3735 | struct ifaddrs *ifap; |
3736 | #endif | |
6b61353c KH |
3737 | |
3738 | CHECK_STRING (ifname); | |
3739 | ||
e99a530f PE |
3740 | if (sizeof rq.ifr_name <= SBYTES (ifname)) |
3741 | error ("interface name too long"); | |
3742 | strcpy (rq.ifr_name, SSDATA (ifname)); | |
6b61353c KH |
3743 | |
3744 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3745 | if (s < 0) | |
3746 | return Qnil; | |
3747 | ||
3748 | elt = Qnil; | |
5e617bc2 | 3749 | #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS) |
6b61353c KH |
3750 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3751 | { | |
3752 | int flags = rq.ifr_flags; | |
91433552 | 3753 | const struct ifflag_def *fp; |
6b61353c KH |
3754 | int fnum; |
3755 | ||
377538cb JD |
3756 | /* If flags is smaller than int (i.e. short) it may have the high bit set |
3757 | due to IFF_MULTICAST. In that case, sign extending it into | |
3758 | an int is wrong. */ | |
3759 | if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags)) | |
3760 | flags = (unsigned short) rq.ifr_flags; | |
3761 | ||
bc57d757 | 3762 | any = 1; |
82a80058 | 3763 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3764 | { |
3765 | if (flags & fp->flag_bit) | |
3766 | { | |
3767 | elt = Fcons (intern (fp->flag_sym), elt); | |
3768 | flags -= fp->flag_bit; | |
3769 | } | |
3770 | } | |
fa3c87e1 | 3771 | for (fnum = 0; flags && fnum < 32; flags >>= 1, fnum++) |
6b61353c | 3772 | { |
fa3c87e1 | 3773 | if (flags & 1) |
6b61353c KH |
3774 | { |
3775 | elt = Fcons (make_number (fnum), elt); | |
3776 | } | |
3777 | } | |
3778 | } | |
3779 | #endif | |
3780 | res = Fcons (elt, res); | |
3781 | ||
3782 | elt = Qnil; | |
5e617bc2 | 3783 | #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR) |
6b61353c KH |
3784 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3785 | { | |
3786 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3787 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3788 | int n; | |
3789 | ||
bc57d757 | 3790 | any = 1; |
6b61353c KH |
3791 | for (n = 0; n < 6; n++) |
3792 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3793 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3794 | } | |
5e617bc2 | 3795 | #elif defined (HAVE_GETIFADDRS) && defined (LLADDR) |
377538cb JD |
3796 | if (getifaddrs (&ifap) != -1) |
3797 | { | |
3798 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3799 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3800 | struct ifaddrs *it; | |
3801 | ||
3802 | for (it = ifap; it != NULL; it = it->ifa_next) | |
3803 | { | |
3804 | struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr; | |
3805 | unsigned char linkaddr[6]; | |
3806 | int n; | |
3807 | ||
3808 | if (it->ifa_addr->sa_family != AF_LINK | |
3809 | || strcmp (it->ifa_name, SSDATA (ifname)) != 0 | |
3810 | || sdl->sdl_alen != 6) | |
3811 | continue; | |
3812 | ||
5e617bc2 | 3813 | memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen); |
377538cb JD |
3814 | for (n = 0; n < 6; n++) |
3815 | p->contents[n] = make_number (linkaddr[n]); | |
3816 | ||
3817 | elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr); | |
3818 | break; | |
3819 | } | |
3820 | } | |
3821 | #ifdef HAVE_FREEIFADDRS | |
3822 | freeifaddrs (ifap); | |
6b61353c | 3823 | #endif |
377538cb JD |
3824 | |
3825 | #endif /* HAVE_GETIFADDRS && LLADDR */ | |
3826 | ||
6b61353c KH |
3827 | res = Fcons (elt, res); |
3828 | ||
3829 | elt = Qnil; | |
5e617bc2 | 3830 | #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3831 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3832 | { | |
bc57d757 | 3833 | any = 1; |
2026418c | 3834 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3835 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3836 | #else |
3837 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3838 | #endif | |
6b61353c KH |
3839 | } |
3840 | #endif | |
3841 | res = Fcons (elt, res); | |
3842 | ||
3843 | elt = Qnil; | |
5e617bc2 | 3844 | #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
6b61353c KH |
3845 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3846 | { | |
bc57d757 | 3847 | any = 1; |
6b61353c KH |
3848 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); |
3849 | } | |
3850 | #endif | |
3851 | res = Fcons (elt, res); | |
3852 | ||
3853 | elt = Qnil; | |
5e617bc2 | 3854 | #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR) |
6b61353c KH |
3855 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3856 | { | |
bc57d757 | 3857 | any = 1; |
6b61353c KH |
3858 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); |
3859 | } | |
3860 | #endif | |
3861 | res = Fcons (elt, res); | |
3862 | ||
3863 | close (s); | |
3864 | ||
3865 | return any ? res : Qnil; | |
3866 | } | |
3867 | #endif | |
5e617bc2 | 3868 | #endif /* defined (HAVE_NET_IF_H) */ |
6b61353c | 3869 | |
04391069 RS |
3870 | /* Turn off input and output for process PROC. */ |
3871 | ||
40ccffa6 | 3872 | static void |
d3da34e0 | 3873 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3874 | { |
3875 | register int inchannel, outchannel; | |
3876 | register struct Lisp_Process *p = XPROCESS (proc); | |
3877 | ||
9c6c6f49 CY |
3878 | #ifdef HAVE_GNUTLS |
3879 | /* Delete GnuTLS structures in PROC, if any. */ | |
3880 | emacs_gnutls_deinit (proc); | |
3881 | #endif /* HAVE_GNUTLS */ | |
3882 | ||
60f0fb11 SM |
3883 | inchannel = p->infd; |
3884 | outchannel = p->outfd; | |
d0d6b7c5 | 3885 | |
6b61353c | 3886 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3887 | if (p->read_output_delay > 0) |
6b61353c KH |
3888 | { |
3889 | if (--process_output_delay_count < 0) | |
3890 | process_output_delay_count = 0; | |
60f0fb11 SM |
3891 | p->read_output_delay = 0; |
3892 | p->read_output_skip = 0; | |
6b61353c KH |
3893 | } |
3894 | #endif | |
f3d9532b | 3895 | |
a9f2c884 | 3896 | if (inchannel >= 0) |
d0d6b7c5 JB |
3897 | { |
3898 | /* Beware SIGCHLD hereabouts. */ | |
3899 | flush_pending_output (inchannel); | |
68c45bf0 | 3900 | emacs_close (inchannel); |
a9f2c884 | 3901 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3902 | emacs_close (outchannel); |
d0d6b7c5 | 3903 | |
60f0fb11 SM |
3904 | p->infd = -1; |
3905 | p->outfd = -1; | |
e690ca94 KS |
3906 | #ifdef DATAGRAM_SOCKETS |
3907 | if (DATAGRAM_CHAN_P (inchannel)) | |
3908 | { | |
3909 | xfree (datagram_address[inchannel].sa); | |
3910 | datagram_address[inchannel].sa = 0; | |
3911 | datagram_address[inchannel].len = 0; | |
3912 | } | |
3913 | #endif | |
d0d6b7c5 JB |
3914 | chan_process[inchannel] = Qnil; |
3915 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3916 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3917 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3918 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3919 | { | |
3920 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 3921 | FD_CLR (inchannel, &write_mask); |
dd2a17ab | 3922 | if (--num_pending_connects < 0) |
1088b922 | 3923 | emacs_abort (); |
dd2a17ab | 3924 | } |
bad49fc7 | 3925 | #endif |
7d0e672e RS |
3926 | if (inchannel == max_process_desc) |
3927 | { | |
3928 | int i; | |
3929 | /* We just closed the highest-numbered process input descriptor, | |
3930 | so recompute the highest-numbered one now. */ | |
3931 | max_process_desc = 0; | |
3932 | for (i = 0; i < MAXDESC; i++) | |
3933 | if (!NILP (chan_process[i])) | |
3934 | max_process_desc = i; | |
3935 | } | |
d0d6b7c5 JB |
3936 | } |
3937 | } | |
3938 | ||
d0d6b7c5 JB |
3939 | \f |
3940 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3941 | 0, 4, 0, |
fdb82f93 PJ |
3942 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3943 | It is read into the process' buffers or given to their filter functions. | |
3944 | Non-nil arg PROCESS means do not return until some output has been received | |
3945 | from PROCESS. | |
5088da42 | 3946 | |
2a7bb882 MR |
3947 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
3948 | and milliseconds to wait; return after that much time whether or not | |
3949 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 3950 | it specifies a fractional number of seconds to wait. |
891bd142 | 3951 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 3952 | |
107ed38d KS |
3953 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3954 | from PROCESS, suspending reading output from other processes. | |
3955 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 3956 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 3957 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 3958 | { |
d35af63c PE |
3959 | intmax_t secs; |
3960 | int nsecs; | |
d0d6b7c5 | 3961 | |
0748d150 | 3962 | if (! NILP (process)) |
b7826503 | 3963 | CHECK_PROCESS (process); |
107ed38d KS |
3964 | else |
3965 | just_this_one = Qnil; | |
0748d150 | 3966 | |
891bd142 SM |
3967 | if (!NILP (millisec)) |
3968 | { /* Obsolete calling convention using integers rather than floats. */ | |
3969 | CHECK_NUMBER (millisec); | |
3970 | if (NILP (seconds)) | |
3971 | seconds = make_float (XINT (millisec) / 1000.0); | |
3972 | else | |
3973 | { | |
3974 | CHECK_NUMBER (seconds); | |
3975 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
3976 | } | |
3977 | } | |
3978 | ||
d35af63c PE |
3979 | secs = 0; |
3980 | nsecs = -1; | |
3981 | ||
5088da42 | 3982 | if (!NILP (seconds)) |
d0d6b7c5 | 3983 | { |
d35af63c PE |
3984 | if (INTEGERP (seconds)) |
3985 | { | |
3986 | if (0 < XINT (seconds)) | |
3987 | { | |
3988 | secs = XINT (seconds); | |
3989 | nsecs = 0; | |
3990 | } | |
3991 | } | |
3992 | else if (FLOATP (seconds)) | |
3993 | { | |
3994 | if (0 < XFLOAT_DATA (seconds)) | |
3995 | { | |
3996 | EMACS_TIME t = EMACS_TIME_FROM_DOUBLE (XFLOAT_DATA (seconds)); | |
f1dd8073 | 3997 | secs = min (EMACS_SECS (t), WAIT_READING_MAX); |
d35af63c PE |
3998 | nsecs = EMACS_NSECS (t); |
3999 | } | |
4000 | } | |
4001 | else | |
4002 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 4003 | } |
d35af63c PE |
4004 | else if (! NILP (process)) |
4005 | nsecs = 0; | |
d0d6b7c5 JB |
4006 | |
4007 | return | |
d35af63c | 4008 | (wait_reading_process_output (secs, nsecs, 0, 0, |
214d6069 KS |
4009 | Qnil, |
4010 | !NILP (process) ? XPROCESS (process) : NULL, | |
4011 | NILP (just_this_one) ? 0 : | |
4012 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
4013 | ? Qt : Qnil); |
4014 | } | |
4015 | ||
e690ca94 KS |
4016 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4017 | ||
4018 | static int connect_counter = 0; | |
4019 | ||
4020 | static void | |
d3da34e0 | 4021 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4022 | { |
4023 | Lisp_Object proc, caller, name, buffer; | |
4024 | Lisp_Object contact, host, service; | |
4025 | struct Lisp_Process *ps= XPROCESS (server); | |
4026 | struct Lisp_Process *p; | |
4027 | int s; | |
4028 | union u_sockaddr { | |
4029 | struct sockaddr sa; | |
4030 | struct sockaddr_in in; | |
e1652a86 KS |
4031 | #ifdef AF_INET6 |
4032 | struct sockaddr_in6 in6; | |
4033 | #endif | |
e690ca94 KS |
4034 | #ifdef HAVE_LOCAL_SOCKETS |
4035 | struct sockaddr_un un; | |
4036 | #endif | |
4037 | } saddr; | |
401bf9b4 | 4038 | socklen_t len = sizeof saddr; |
e690ca94 KS |
4039 | |
4040 | s = accept (channel, &saddr.sa, &len); | |
4041 | ||
4042 | if (s < 0) | |
4043 | { | |
4044 | int code = errno; | |
4045 | ||
4046 | if (code == EAGAIN) | |
4047 | return; | |
4048 | #ifdef EWOULDBLOCK | |
4049 | if (code == EWOULDBLOCK) | |
4050 | return; | |
4051 | #endif | |
4052 | ||
4d2b044c DA |
4053 | if (!NILP (ps->log)) |
4054 | call3 (ps->log, server, Qnil, | |
e690ca94 KS |
4055 | concat3 (build_string ("accept failed with code"), |
4056 | Fnumber_to_string (make_number (code)), | |
4057 | build_string ("\n"))); | |
4058 | return; | |
4059 | } | |
4060 | ||
4061 | connect_counter++; | |
4062 | ||
4063 | /* Setup a new process to handle the connection. */ | |
4064 | ||
4065 | /* Generate a unique identification of the caller, and build contact | |
4066 | information for this process. */ | |
4067 | host = Qt; | |
4068 | service = Qnil; | |
4069 | switch (saddr.sa.sa_family) | |
4070 | { | |
4071 | case AF_INET: | |
4072 | { | |
4073 | Lisp_Object args[5]; | |
4074 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4075 | args[0] = build_string ("%d.%d.%d.%d"); | |
4076 | args[1] = make_number (*ip++); | |
4077 | args[2] = make_number (*ip++); | |
4078 | args[3] = make_number (*ip++); | |
4079 | args[4] = make_number (*ip++); | |
4080 | host = Fformat (5, args); | |
4081 | service = make_number (ntohs (saddr.in.sin_port)); | |
4082 | ||
4083 | args[0] = build_string (" <%s:%d>"); | |
4084 | args[1] = host; | |
4085 | args[2] = service; | |
4086 | caller = Fformat (3, args); | |
4087 | } | |
4088 | break; | |
4089 | ||
e1652a86 KS |
4090 | #ifdef AF_INET6 |
4091 | case AF_INET6: | |
4092 | { | |
4093 | Lisp_Object args[9]; | |
4094 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4095 | int i; | |
4096 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4097 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4098 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4099 | host = Fformat (9, args); |
4100 | service = make_number (ntohs (saddr.in.sin_port)); | |
4101 | ||
4102 | args[0] = build_string (" <[%s]:%d>"); | |
4103 | args[1] = host; | |
4104 | args[2] = service; | |
4105 | caller = Fformat (3, args); | |
4106 | } | |
4107 | break; | |
4108 | #endif | |
4109 | ||
e690ca94 KS |
4110 | #ifdef HAVE_LOCAL_SOCKETS |
4111 | case AF_LOCAL: | |
4112 | #endif | |
4113 | default: | |
4114 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4115 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4116 | break; |
4117 | } | |
4118 | ||
4119 | /* Create a new buffer name for this process if it doesn't have a | |
4120 | filter. The new buffer name is based on the buffer name or | |
4121 | process name of the server process concatenated with the caller | |
4122 | identification. */ | |
4123 | ||
4d2b044c | 4124 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) |
e690ca94 KS |
4125 | buffer = Qnil; |
4126 | else | |
4127 | { | |
4d2b044c | 4128 | buffer = ps->buffer; |
e690ca94 KS |
4129 | if (!NILP (buffer)) |
4130 | buffer = Fbuffer_name (buffer); | |
4131 | else | |
4d2b044c | 4132 | buffer = ps->name; |
e690ca94 KS |
4133 | if (!NILP (buffer)) |
4134 | { | |
4135 | buffer = concat2 (buffer, caller); | |
4136 | buffer = Fget_buffer_create (buffer); | |
4137 | } | |
4138 | } | |
4139 | ||
4140 | /* Generate a unique name for the new server process. Combine the | |
4141 | server process name with the caller identification. */ | |
4142 | ||
4d2b044c | 4143 | name = concat2 (ps->name, caller); |
e690ca94 KS |
4144 | proc = make_process (name); |
4145 | ||
4146 | chan_process[s] = proc; | |
4147 | ||
4148 | #ifdef O_NONBLOCK | |
4149 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4150 | #else | |
4151 | #ifdef O_NDELAY | |
4152 | fcntl (s, F_SETFL, O_NDELAY); | |
4153 | #endif | |
4154 | #endif | |
4155 | ||
4156 | p = XPROCESS (proc); | |
4157 | ||
4158 | /* Build new contact information for this setup. */ | |
4d2b044c | 4159 | contact = Fcopy_sequence (ps->childp); |
e690ca94 KS |
4160 | contact = Fplist_put (contact, QCserver, Qnil); |
4161 | contact = Fplist_put (contact, QChost, host); | |
4162 | if (!NILP (service)) | |
4163 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4164 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4165 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4166 | #ifdef HAVE_GETSOCKNAME | |
4167 | len = sizeof saddr; | |
2185db04 | 4168 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4169 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4170 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4171 | #endif | |
4172 | ||
6a09a33b PE |
4173 | pset_childp (p, contact); |
4174 | pset_plist (p, Fcopy_sequence (ps->plist)); | |
4175 | pset_type (p, Qnetwork); | |
ac4a7584 | 4176 | |
6a09a33b PE |
4177 | pset_buffer (p, buffer); |
4178 | pset_sentinel (p, ps->sentinel); | |
4179 | pset_filter (p, ps->filter); | |
4180 | pset_command (p, Qnil); | |
6bfd98e7 | 4181 | p->pid = 0; |
60f0fb11 SM |
4182 | p->infd = s; |
4183 | p->outfd = s; | |
6a09a33b | 4184 | pset_status (p, Qrun); |
e690ca94 KS |
4185 | |
4186 | /* Client processes for accepted connections are not stopped initially. */ | |
4d2b044c | 4187 | if (!EQ (p->filter, Qt)) |
e690ca94 KS |
4188 | { |
4189 | FD_SET (s, &input_wait_mask); | |
4190 | FD_SET (s, &non_keyboard_wait_mask); | |
4191 | } | |
4192 | ||
4193 | if (s > max_process_desc) | |
4194 | max_process_desc = s; | |
4195 | ||
177c0ea7 | 4196 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4197 | This seems to be the proper thing to do, as the coding system |
4198 | of the new process should reflect the settings at the time the | |
4199 | server socket was opened; not the current settings. */ | |
4200 | ||
6a09a33b PE |
4201 | pset_decode_coding_system (p, ps->decode_coding_system); |
4202 | pset_encode_coding_system (p, ps->encode_coding_system); | |
03f04413 | 4203 | setup_process_coding_systems (proc); |
e690ca94 | 4204 | |
6a09a33b | 4205 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 4206 | p->decoding_carryover = 0; |
6a09a33b | 4207 | pset_encoding_buf (p, empty_unibyte_string); |
e690ca94 KS |
4208 | |
4209 | p->inherit_coding_system_flag | |
60f0fb11 | 4210 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 | 4211 | |
4d2b044c DA |
4212 | if (!NILP (ps->log)) |
4213 | call3 (ps->log, server, proc, | |
e690ca94 KS |
4214 | concat3 (build_string ("accept from "), |
4215 | (STRINGP (host) ? host : build_string ("-")), | |
4216 | build_string ("\n"))); | |
4217 | ||
4d2b044c | 4218 | if (!NILP (p->sentinel)) |
177c0ea7 | 4219 | exec_sentinel (proc, |
e690ca94 KS |
4220 | concat3 (build_string ("open from "), |
4221 | (STRINGP (host) ? host : build_string ("-")), | |
4222 | build_string ("\n"))); | |
4223 | } | |
4224 | ||
d0d6b7c5 JB |
4225 | /* This variable is different from waiting_for_input in keyboard.c. |
4226 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4227 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4228 | for user-input when that process-filter was called. |
4229 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4230 | lisp code is being evalled. |
4231 | This is also used in record_asynch_buffer_change. | |
4232 | For that purpose, this must be 0 | |
214d6069 | 4233 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4234 | static int waiting_for_user_input_p; |
4235 | ||
2beb96f9 | 4236 | static Lisp_Object |
d3da34e0 | 4237 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4238 | { |
4239 | waiting_for_user_input_p = XINT (data); | |
4240 | return Qnil; | |
4241 | } | |
4242 | ||
c573ae8e | 4243 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4244 | static void |
d3da34e0 | 4245 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4246 | { |
4247 | } | |
4248 | ||
d0d6b7c5 JB |
4249 | /* Read and dispose of subprocess output while waiting for timeout to |
4250 | elapse and/or keyboard input to be available. | |
4251 | ||
de6fd4b9 | 4252 | TIME_LIMIT is: |
d35af63c PE |
4253 | timeout in seconds |
4254 | If negative, gobble data immediately available but don't wait for any. | |
d0d6b7c5 | 4255 | |
d35af63c PE |
4256 | NSECS is: |
4257 | an additional duration to wait, measured in nanoseconds | |
4258 | If TIME_LIMIT is zero, then: | |
4259 | If NSECS == 0, there is no limit. | |
d188e26b | 4260 | If NSECS > 0, the timeout consists of NSECS only. |
d35af63c | 4261 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
6e4f3667 | 4262 | |
a0bee46f | 4263 | READ_KBD is: |
d0d6b7c5 JB |
4264 | 0 to ignore keyboard input, or |
4265 | 1 to return when input is available, or | |
84aa3ace | 4266 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4267 | the quit handler, or |
d0d6b7c5 | 4268 | |
9fa1de30 | 4269 | DO_DISPLAY means redisplay should be done to show subprocess |
107ed38d | 4270 | output that arrives. |
d0d6b7c5 | 4271 | |
b89a415a KS |
4272 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4273 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4274 | |
b89a415a | 4275 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4276 | process. The return value is true if we read some input from |
b89a415a KS |
4277 | that process. |
4278 | ||
4279 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4280 | (suspending output from other processes). A negative value | |
4281 | means don't run any timers either. | |
4282 | ||
e0f24100 | 4283 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4284 | received input from that process before the timeout elapsed. |
e0f24100 | 4285 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4286 | |
dfcf069d | 4287 | int |
d35af63c | 4288 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
9fa1de30 | 4289 | bool do_display, |
d5a3eaaf AS |
4290 | Lisp_Object wait_for_cell, |
4291 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4292 | { |
41d03b9a | 4293 | register int channel, nfds; |
855448dc | 4294 | SELECT_TYPE Available; |
3fad2ad2 J |
4295 | SELECT_TYPE Writeok; |
4296 | int check_write; | |
bad49fc7 | 4297 | int check_delay, no_avail; |
d0d6b7c5 JB |
4298 | int xerrno; |
4299 | Lisp_Object proc; | |
41d03b9a | 4300 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4301 | int wait_channel = -1; |
d0d6b7c5 | 4302 | int got_some_input = 0; |
d311d28c | 4303 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4304 | |
4305 | FD_ZERO (&Available); | |
3fad2ad2 | 4306 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4307 | |
d35af63c | 4308 | if (time_limit == 0 && nsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
4d2b044c DA |
4309 | && !(CONSP (wait_proc->status) |
4310 | && EQ (XCAR (wait_proc->status), Qexit))) | |
2b0a91e7 SM |
4311 | message ("Blocking call to accept-process-output with quit inhibited!!"); |
4312 | ||
b89a415a KS |
4313 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4314 | if (wait_proc != NULL) | |
60f0fb11 | 4315 | wait_channel = wait_proc->infd; |
84aa3ace | 4316 | |
2beb96f9 KS |
4317 | record_unwind_protect (wait_reading_process_output_unwind, |
4318 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4319 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 | 4320 | |
d35af63c PE |
4321 | if (time_limit < 0) |
4322 | { | |
4323 | time_limit = 0; | |
4324 | nsecs = -1; | |
4325 | } | |
4326 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
4327 | time_limit = TYPE_MAXIMUM (time_t); | |
4328 | ||
d0d6b7c5 JB |
4329 | /* Since we may need to wait several times, |
4330 | compute the absolute time to return at. */ | |
216ee680 | 4331 | if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4332 | { |
e9a9ae03 PE |
4333 | timeout = make_emacs_time (time_limit, nsecs); |
4334 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
d0d6b7c5 JB |
4335 | } |
4336 | ||
d0d6b7c5 JB |
4337 | while (1) |
4338 | { | |
4339 | /* If calling from keyboard input, do not quit | |
4340 | since we want to return C-g as an input character. | |
4341 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4342 | if (read_kbd >= 0) |
d0d6b7c5 | 4343 | QUIT; |
4d7e6e51 | 4344 | else if (pending_signals) |
c3eff1b0 | 4345 | process_pending_signals (); |
d0d6b7c5 | 4346 | |
889255b4 | 4347 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4348 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4349 | break; |
4350 | ||
d0d6b7c5 JB |
4351 | /* Compute time from now till when time limit is up */ |
4352 | /* Exit if already run out */ | |
d35af63c | 4353 | if (nsecs < 0) |
d0d6b7c5 | 4354 | { |
216ee680 | 4355 | /* A negative timeout means |
d0d6b7c5 JB |
4356 | gobble output available now |
4357 | but don't wait at all. */ | |
4358 | ||
e9a9ae03 | 4359 | timeout = make_emacs_time (0, 0); |
d0d6b7c5 | 4360 | } |
216ee680 | 4361 | else if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4362 | { |
e9a9ae03 PE |
4363 | EMACS_TIME now = current_emacs_time (); |
4364 | if (EMACS_TIME_LE (end_time, now)) | |
d0d6b7c5 | 4365 | break; |
e9a9ae03 | 4366 | timeout = sub_emacs_time (end_time, now); |
d0d6b7c5 JB |
4367 | } |
4368 | else | |
4369 | { | |
e9a9ae03 | 4370 | timeout = make_emacs_time (100000, 0); |
d0d6b7c5 JB |
4371 | } |
4372 | ||
f854a00b RS |
4373 | /* Normally we run timers here. |
4374 | But not if wait_for_cell; in those cases, | |
4375 | the wait is supposed to be short, | |
4376 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4377 | if (NILP (wait_for_cell) |
b89a415a | 4378 | && just_wait_proc >= 0) |
fb4c3627 | 4379 | { |
c0239a0b | 4380 | EMACS_TIME timer_delay; |
c573ae8e | 4381 | |
9baacf76 | 4382 | do |
c573ae8e | 4383 | { |
9fa1de30 | 4384 | unsigned old_timers_run = timers_run; |
c88164fe | 4385 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4386 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4387 | |
f868cd8a | 4388 | timer_delay = timer_check (); |
a2fab450 GM |
4389 | |
4390 | /* If a timer has run, this might have changed buffers | |
4391 | an alike. Make read_key_sequence aware of that. */ | |
4392 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4393 | && (old_buffer != current_buffer |
4394 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4395 | && waiting_for_user_input_p == -1) |
4396 | record_asynch_buffer_change (); | |
177c0ea7 | 4397 | |
9baacf76 GM |
4398 | if (timers_run != old_timers_run && do_display) |
4399 | /* We must retry, since a timer may have requeued itself | |
4400 | and that could alter the time_delay. */ | |
3007ebfb | 4401 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4402 | else |
4403 | break; | |
c573ae8e | 4404 | } |
9baacf76 | 4405 | while (!detect_input_pending ()); |
c573ae8e | 4406 | |
69645afc | 4407 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4408 | if (read_kbd != 0 |
69645afc RS |
4409 | && requeued_events_pending_p ()) |
4410 | break; | |
4411 | ||
216ee680 | 4412 | /* A negative timeout means do not wait at all. */ |
d35af63c | 4413 | if (0 <= nsecs) |
fb4c3627 | 4414 | { |
d35af63c | 4415 | if (EMACS_TIME_VALID_P (timer_delay)) |
c0239a0b | 4416 | { |
d35af63c | 4417 | if (EMACS_TIME_LT (timer_delay, timeout)) |
85fabcb7 | 4418 | timeout = timer_delay; |
d35af63c PE |
4419 | } |
4420 | else | |
4421 | { | |
4422 | /* This is so a breakpoint can be put here. */ | |
4423 | wait_reading_process_output_1 (); | |
c0239a0b | 4424 | } |
c573ae8e | 4425 | } |
fb4c3627 RS |
4426 | } |
4427 | ||
90ab1a81 JB |
4428 | /* Cause C-g and alarm signals to take immediate action, |
4429 | and cause input available signals to zero out timeout. | |
4430 | ||
4431 | It is important that we do this before checking for process | |
4432 | activity. If we get a SIGCHLD after the explicit checks for | |
4433 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4434 | if (read_kbd < 0) |
90ab1a81 JB |
4435 | set_waiting_for_input (&timeout); |
4436 | ||
6be429b1 JB |
4437 | /* If status of something has changed, and no input is |
4438 | available, notify the user of the change right away. After | |
4439 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4440 | timeout to get our attention. */ |
4441 | if (update_tick != process_tick) | |
6be429b1 | 4442 | { |
bad49fc7 | 4443 | SELECT_TYPE Atemp; |
bad49fc7 | 4444 | SELECT_TYPE Ctemp; |
dd2a17ab | 4445 | |
cb768704 J |
4446 | if (kbd_on_hold_p ()) |
4447 | FD_ZERO (&Atemp); | |
4448 | else | |
4449 | Atemp = input_wait_mask; | |
3fad2ad2 | 4450 | Ctemp = write_mask; |
bad49fc7 | 4451 | |
e9a9ae03 | 4452 | timeout = make_emacs_time (0, 0); |
d35af63c PE |
4453 | if ((pselect (max (max_process_desc, max_input_desc) + 1, |
4454 | &Atemp, | |
bad49fc7 | 4455 | #ifdef NON_BLOCKING_CONNECT |
d35af63c | 4456 | (num_pending_connects > 0 ? &Ctemp : NULL), |
bad49fc7 | 4457 | #else |
d35af63c | 4458 | NULL, |
bad49fc7 | 4459 | #endif |
d35af63c | 4460 | NULL, &timeout, NULL) |
ecd1f654 | 4461 | <= 0)) |
90ab1a81 JB |
4462 | { |
4463 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4464 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4465 | clear_waiting_for_input (); |
ff6daed3 | 4466 | status_notify (NULL); |
e42bdf01 | 4467 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4468 | } |
6be429b1 JB |
4469 | } |
4470 | ||
dd2a17ab | 4471 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4472 | read whatever data has already been received. */ |
6bfd98e7 | 4473 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4474 | update_status (wait_proc); |
6bfd98e7 | 4475 | if (wait_proc |
4d2b044c DA |
4476 | && ! EQ (wait_proc->status, Qrun) |
4477 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4478 | { |
215b45e9 | 4479 | int nread, total_nread = 0; |
7ce63188 | 4480 | |
9aa2a7f4 | 4481 | clear_waiting_for_input (); |
7ce63188 RS |
4482 | XSETPROCESS (proc, wait_proc); |
4483 | ||
4484 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4485 | while (wait_proc->infd >= 0) |
215b45e9 | 4486 | { |
60f0fb11 | 4487 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4488 | |
4489 | if (nread == 0) | |
4490 | break; | |
4491 | ||
63136da6 AS |
4492 | if (0 < nread) |
4493 | { | |
891bd142 SM |
4494 | total_nread += nread; |
4495 | got_some_input = 1; | |
4496 | } | |
215b45e9 RS |
4497 | #ifdef EIO |
4498 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4499 | break; |
e1b37c34 GM |
4500 | #endif |
4501 | #ifdef EAGAIN | |
4502 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4503 | break; |
e1b37c34 GM |
4504 | #endif |
4505 | #ifdef EWOULDBLOCK | |
4506 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4507 | break; |
215b45e9 RS |
4508 | #endif |
4509 | } | |
7ce63188 | 4510 | if (total_nread > 0 && do_display) |
3007ebfb | 4511 | redisplay_preserve_echo_area (10); |
7ce63188 | 4512 | |
9aa2a7f4 JB |
4513 | break; |
4514 | } | |
6be429b1 | 4515 | |
d0d6b7c5 JB |
4516 | /* Wait till there is something to do */ |
4517 | ||
b89a415a | 4518 | if (wait_proc && just_wait_proc) |
107ed38d | 4519 | { |
60f0fb11 | 4520 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4521 | break; |
60f0fb11 | 4522 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4523 | check_delay = 0; |
3fad2ad2 | 4524 | check_write = 0; |
107ed38d KS |
4525 | } |
4526 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4527 | { |
4528 | Available = non_process_wait_mask; | |
bad49fc7 | 4529 | check_delay = 0; |
3fad2ad2 | 4530 | check_write = 0; |
dd2a17ab | 4531 | } |
a69281ff | 4532 | else |
dd2a17ab | 4533 | { |
b89a415a | 4534 | if (! read_kbd) |
dd2a17ab KS |
4535 | Available = non_keyboard_wait_mask; |
4536 | else | |
4537 | Available = input_wait_mask; | |
3fad2ad2 | 4538 | Writeok = write_mask; |
82d6e50b J |
4539 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4540 | check_write = 0; | |
4541 | #else | |
3fad2ad2 | 4542 | check_write = 1; |
82d6e50b | 4543 | #endif |
6b61353c | 4544 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4545 | } |
d0d6b7c5 | 4546 | |
ff11dfa1 | 4547 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4548 | redisplay now, before we start to wait. There is a race |
4549 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4550 | and indicates that a frame is trashed, the select may block |
4551 | displaying a trashed screen. */ | |
5164ee8e | 4552 | if (frame_garbaged && do_display) |
7286affd RS |
4553 | { |
4554 | clear_waiting_for_input (); | |
3007ebfb | 4555 | redisplay_preserve_echo_area (11); |
b89a415a | 4556 | if (read_kbd < 0) |
7efe788e | 4557 | set_waiting_for_input (&timeout); |
7286affd | 4558 | } |
ffd56f97 | 4559 | |
029529ac CY |
4560 | /* Skip the `select' call if input is available and we're |
4561 | waiting for keyboard input or a cell change (which can be | |
4562 | triggered by processing X events). In the latter case, set | |
4563 | nfds to 1 to avoid breaking the loop. */ | |
dd2a17ab | 4564 | no_avail = 0; |
029529ac CY |
4565 | if ((read_kbd || !NILP (wait_for_cell)) |
4566 | && detect_input_pending ()) | |
0a65b032 | 4567 | { |
029529ac | 4568 | nfds = read_kbd ? 0 : 1; |
dd2a17ab | 4569 | no_avail = 1; |
0a65b032 | 4570 | } |
029529ac CY |
4571 | |
4572 | if (!no_avail) | |
dd2a17ab | 4573 | { |
6b61353c KH |
4574 | |
4575 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4576 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4577 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4578 | read_output_delay, and we are not reading output for a |
4579 | specific wait_channel. It is not executed if | |
4580 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4581 | if (process_output_skip && check_delay > 0) |
4582 | { | |
d35af63c PE |
4583 | int nsecs = EMACS_NSECS (timeout); |
4584 | if (EMACS_SECS (timeout) > 0 || nsecs > READ_OUTPUT_DELAY_MAX) | |
4585 | nsecs = READ_OUTPUT_DELAY_MAX; | |
6b61353c KH |
4586 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) |
4587 | { | |
4588 | proc = chan_process[channel]; | |
4589 | if (NILP (proc)) | |
4590 | continue; | |
db853b7a | 4591 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4592 | processes with non-zero read_output_skip. */ |
4593 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4594 | { |
4595 | check_delay--; | |
60f0fb11 | 4596 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4597 | continue; |
4598 | FD_CLR (channel, &Available); | |
60f0fb11 | 4599 | XPROCESS (proc)->read_output_skip = 0; |
d35af63c PE |
4600 | if (XPROCESS (proc)->read_output_delay < nsecs) |
4601 | nsecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4602 | } |
4603 | } | |
e9a9ae03 | 4604 | timeout = make_emacs_time (0, nsecs); |
6b61353c KH |
4605 | process_output_skip = 0; |
4606 | } | |
4607 | #endif | |
0fda9b75 | 4608 | |
0949d2b6 | 4609 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 JD |
4610 | nfds = xg_select |
4611 | #elif defined (HAVE_NS) | |
63136da6 | 4612 | nfds = ns_select |
edfda783 | 4613 | #else |
d35af63c | 4614 | nfds = pselect |
edfda783 | 4615 | #endif |
3fad2ad2 J |
4616 | (max (max_process_desc, max_input_desc) + 1, |
4617 | &Available, | |
4618 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
d35af63c | 4619 | NULL, &timeout, NULL); |
e061a11b TZ |
4620 | |
4621 | #ifdef HAVE_GNUTLS | |
4622 | /* GnuTLS buffers data internally. In lowat mode it leaves | |
4623 | some data in the TCP buffers so that select works, but | |
4624 | with custom pull/push functions we need to check if some | |
4625 | data is available in the buffers manually. */ | |
261b6fd4 LMI |
4626 | if (nfds == 0) |
4627 | { | |
4628 | if (! wait_proc) | |
4629 | { | |
4630 | /* We're not waiting on a specific process, so loop | |
16c1ad08 LMI |
4631 | through all the channels and check for data. |
4632 | This is a workaround needed for some versions of | |
4633 | the gnutls library -- 2.12.14 has been confirmed | |
4634 | to need it. See | |
4635 | http://comments.gmane.org/gmane.emacs.devel/145074 */ | |
261b6fd4 | 4636 | for (channel = 0; channel < MAXDESC; ++channel) |
5b76caa4 PE |
4637 | if (! NILP (chan_process[channel])) |
4638 | { | |
4639 | struct Lisp_Process *p = | |
4640 | XPROCESS (chan_process[channel]); | |
4641 | if (p && p->gnutls_p && p->infd | |
4642 | && ((emacs_gnutls_record_check_pending | |
4643 | (p->gnutls_state)) | |
4644 | > 0)) | |
4645 | { | |
4646 | nfds++; | |
4647 | FD_SET (p->infd, &Available); | |
4648 | } | |
4649 | } | |
261b6fd4 LMI |
4650 | } |
4651 | else | |
4652 | { | |
4653 | /* Check this specific channel. */ | |
5b76caa4 | 4654 | if (wait_proc->gnutls_p /* Check for valid process. */ |
261b6fd4 | 4655 | /* Do we have pending data? */ |
5b76caa4 PE |
4656 | && ((emacs_gnutls_record_check_pending |
4657 | (wait_proc->gnutls_state)) | |
4658 | > 0)) | |
261b6fd4 LMI |
4659 | { |
4660 | nfds = 1; | |
4661 | /* Set to Available. */ | |
4662 | FD_SET (wait_proc->infd, &Available); | |
4663 | } | |
4664 | } | |
4665 | } | |
e061a11b | 4666 | #endif |
dd2a17ab | 4667 | } |
6720a7fb | 4668 | |
d0d6b7c5 JB |
4669 | xerrno = errno; |
4670 | ||
4671 | /* Make C-g and alarm signals set flags again */ | |
4672 | clear_waiting_for_input (); | |
4673 | ||
4674 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4675 | do_pending_window_change (0); |
d0d6b7c5 | 4676 | |
85fabcb7 CY |
4677 | /* We used to break here if nfds == 0, i.e. we seemed to have |
4678 | waited the full period. But apparently if Emacs receives | |
4679 | SIGIO between set_waiting_for_input and select, select can | |
4680 | return with nfds == 0 due to the timeout being zeroed out by | |
4681 | the signal handler (Bug#11536). */ | |
893cc455 | 4682 | |
d0d6b7c5 JB |
4683 | if (nfds < 0) |
4684 | { | |
4685 | if (xerrno == EINTR) | |
dd2a17ab | 4686 | no_avail = 1; |
d0d6b7c5 JB |
4687 | else if (xerrno == EBADF) |
4688 | { | |
4689 | #ifdef AIX | |
4690 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4691 | the child's closure of the pts gives the parent a SIGHUP, and | |
4692 | the ptc file descriptor is automatically closed, | |
4693 | yielding EBADF here or at select() call above. | |
4694 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4695 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4696 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4697 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 | 4698 | #else |
1088b922 | 4699 | emacs_abort (); |
d0d6b7c5 JB |
4700 | #endif |
4701 | } | |
4702 | else | |
68c45bf0 | 4703 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4704 | } |
dd2a17ab KS |
4705 | |
4706 | if (no_avail) | |
4707 | { | |
4708 | FD_ZERO (&Available); | |
3fad2ad2 | 4709 | check_write = 0; |
dd2a17ab KS |
4710 | } |
4711 | ||
d0d6b7c5 JB |
4712 | /* Check for keyboard input */ |
4713 | /* If there is any, return immediately | |
4714 | to give it higher priority than subprocesses */ | |
4715 | ||
b89a415a | 4716 | if (read_kbd != 0) |
6ed6233b | 4717 | { |
9fa1de30 | 4718 | unsigned old_timers_run = timers_run; |
c88164fe | 4719 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4720 | Lisp_Object old_window = selected_window; |
a2fab450 | 4721 | int leave = 0; |
177c0ea7 | 4722 | |
5d6c2aa3 | 4723 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4724 | { |
4725 | swallow_events (do_display); | |
4726 | if (detect_input_pending_run_timers (do_display)) | |
4727 | leave = 1; | |
4728 | } | |
6ed6233b | 4729 | |
a2fab450 GM |
4730 | /* If a timer has run, this might have changed buffers |
4731 | an alike. Make read_key_sequence aware of that. */ | |
4732 | if (timers_run != old_timers_run | |
c88164fe | 4733 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4734 | && (old_buffer != current_buffer |
4735 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4736 | record_asynch_buffer_change (); |
4737 | ||
4738 | if (leave) | |
4739 | break; | |
177c0ea7 JB |
4740 | } |
4741 | ||
69645afc | 4742 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4743 | if (read_kbd != 0 |
69645afc RS |
4744 | && requeued_events_pending_p ()) |
4745 | break; | |
4746 | ||
77e1b3d4 RS |
4747 | /* If we are not checking for keyboard input now, |
4748 | do process events (but don't run any timers). | |
4749 | This is so that X events will be processed. | |
0c9960e9 | 4750 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4751 | That would causes delays in pasting selections, for example. |
4752 | ||
4753 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4754 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4755 | { |
4756 | swallow_events (do_display); | |
0c9960e9 | 4757 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4758 | if (detect_input_pending ()) |
4759 | break; | |
5d5beb62 | 4760 | #endif |
0c9960e9 | 4761 | } |
f854a00b | 4762 | |
84aa3ace | 4763 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4764 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4765 | break; |
4766 | ||
4a4bbad2 | 4767 | #ifdef USABLE_SIGIO |
5d5beb62 | 4768 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4769 | go read it. This can happen with X on BSD after logging out. |
4770 | In that case, there really is no input and no SIGIO, | |
4771 | but select says there is input. */ | |
4772 | ||
b89a415a | 4773 | if (read_kbd && interrupt_input |
2601f59e | 4774 | && keyboard_bit_set (&Available) && ! noninteractive) |
4d7e6e51 | 4775 | handle_input_available_signal (SIGIO); |
4746118a | 4776 | #endif |
d0d6b7c5 | 4777 | |
d0d6b7c5 JB |
4778 | if (! wait_proc) |
4779 | got_some_input |= nfds > 0; | |
4780 | ||
32676c08 JB |
4781 | /* If checking input just got us a size-change event from X, |
4782 | obey it now if we should. */ | |
b89a415a | 4783 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4784 | do_pending_window_change (0); |
32676c08 | 4785 | |
a9f2c884 | 4786 | /* Check for data from a process. */ |
dd2a17ab KS |
4787 | if (no_avail || nfds == 0) |
4788 | continue; | |
4789 | ||
3fad2ad2 J |
4790 | for (channel = 0; channel <= max_input_desc; ++channel) |
4791 | { | |
4792 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
de1339b0 PE |
4793 | if (d->func |
4794 | && ((d->condition & FOR_READ | |
4795 | && FD_ISSET (channel, &Available)) | |
4796 | || (d->condition & FOR_WRITE | |
4797 | && FD_ISSET (channel, &write_mask)))) | |
4798 | d->func (channel, d->data); | |
4799 | } | |
3fad2ad2 | 4800 | |
a69281ff | 4801 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4802 | { |
a69281ff | 4803 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4804 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4805 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4806 | { |
4807 | int nread; | |
4808 | ||
4809 | /* If waiting for this channel, arrange to return as | |
4810 | soon as no more input to be processed. No more | |
4811 | waiting. */ | |
4812 | if (wait_channel == channel) | |
4813 | { | |
a9f2c884 | 4814 | wait_channel = -1; |
d35af63c | 4815 | nsecs = -1; |
d0d6b7c5 JB |
4816 | got_some_input = 1; |
4817 | } | |
4818 | proc = chan_process[channel]; | |
4819 | if (NILP (proc)) | |
4820 | continue; | |
4821 | ||
e690ca94 | 4822 | /* If this is a server stream socket, accept connection. */ |
4d2b044c | 4823 | if (EQ (XPROCESS (proc)->status, Qlisten)) |
e690ca94 KS |
4824 | { |
4825 | server_accept_connection (proc, channel); | |
4826 | continue; | |
4827 | } | |
4828 | ||
d0d6b7c5 JB |
4829 | /* Read data from the process, starting with our |
4830 | buffered-ahead character if we have one. */ | |
4831 | ||
4832 | nread = read_process_output (proc, channel); | |
4833 | if (nread > 0) | |
4834 | { | |
4835 | /* Since read_process_output can run a filter, | |
4836 | which can call accept-process-output, | |
4837 | don't try to read from any other processes | |
4838 | before doing the select again. */ | |
4839 | FD_ZERO (&Available); | |
4840 | ||
4841 | if (do_display) | |
3007ebfb | 4842 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4843 | } |
4844 | #ifdef EWOULDBLOCK | |
4845 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4846 | ; | |
0b75e9a4 | 4847 | #endif |
89d7280d RS |
4848 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4849 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4850 | #ifdef O_NONBLOCK |
4851 | else if (nread == -1 && errno == EAGAIN) | |
4852 | ; | |
4853 | #else | |
4854 | #ifdef O_NDELAY | |
4855 | else if (nread == -1 && errno == EAGAIN) | |
4856 | ; | |
4857 | /* Note that we cannot distinguish between no input | |
4858 | available now and a closed pipe. | |
4859 | With luck, a closed pipe will be accompanied by | |
4860 | subprocess termination and SIGCHLD. */ | |
d888760c | 4861 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4862 | ; |
4740825c KS |
4863 | #endif /* O_NDELAY */ |
4864 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4865 | #ifdef HAVE_PTYS |
4866 | /* On some OSs with ptys, when the process on one end of | |
4867 | a pty exits, the other end gets an error reading with | |
4868 | errno = EIO instead of getting an EOF (0 bytes read). | |
4869 | Therefore, if we get an error reading and errno = | |
4870 | EIO, just continue, because the child process has | |
4871 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4872 | get a SIGCHLD). |
4873 | ||
4874 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4875 | got lost. So raise the signal again just in case. |
5651af6d | 4876 | It can't hurt. */ |
d0d6b7c5 | 4877 | else if (nread == -1 && errno == EIO) |
4740825c | 4878 | { |
f30d612a CY |
4879 | struct Lisp_Process *p = XPROCESS (proc); |
4880 | ||
4881 | /* Clear the descriptor now, so we only raise the | |
4882 | signal once. */ | |
4883 | FD_CLR (channel, &input_wait_mask); | |
4884 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4885 | ||
4886 | if (p->pid == -2) | |
4887 | { | |
20ef56db PE |
4888 | /* If the EIO occurs on a pty, the SIGCHLD handler's |
4889 | waitpid call will not find the process object to | |
f30d612a CY |
4890 | delete. Do it here. */ |
4891 | p->tick = ++process_tick; | |
6a09a33b | 4892 | pset_status (p, Qfailed); |
f30d612a CY |
4893 | } |
4894 | else | |
4d7e6e51 | 4895 | handle_child_signal (SIGCHLD); |
4740825c KS |
4896 | } |
4897 | #endif /* HAVE_PTYS */ | |
5063c0e1 TN |
4898 | /* If we can detect process termination, don't consider the |
4899 | process gone just because its pipe is closed. */ | |
d0d6b7c5 | 4900 | #ifdef SIGCHLD |
d888760c | 4901 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4902 | ; |
4903 | #endif | |
4904 | else | |
4905 | { | |
4906 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4907 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4908 | deactivate_process (proc); |
6bfd98e7 | 4909 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 | 4910 | update_status (XPROCESS (proc)); |
4d2b044c | 4911 | if (EQ (XPROCESS (proc)->status, Qrun)) |
6a09a33b PE |
4912 | pset_status (XPROCESS (proc), |
4913 | list2 (Qexit, make_number (256))); | |
d0d6b7c5 JB |
4914 | } |
4915 | } | |
177c0ea7 | 4916 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 4917 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 4918 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
4919 | { |
4920 | struct Lisp_Process *p; | |
dd2a17ab KS |
4921 | |
4922 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 4923 | FD_CLR (channel, &write_mask); |
dd2a17ab | 4924 | if (--num_pending_connects < 0) |
1088b922 | 4925 | emacs_abort (); |
dd2a17ab KS |
4926 | |
4927 | proc = chan_process[channel]; | |
4928 | if (NILP (proc)) | |
4929 | continue; | |
4930 | ||
4931 | p = XPROCESS (proc); | |
4932 | ||
4933 | #ifdef GNU_LINUX | |
4934 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 4935 | So only use it on systems where it is known to work. */ |
dd2a17ab | 4936 | { |
401bf9b4 | 4937 | socklen_t xlen = sizeof (xerrno); |
ed3751c8 | 4938 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
dd2a17ab KS |
4939 | xerrno = errno; |
4940 | } | |
4941 | #else | |
44c887be PJ |
4942 | { |
4943 | struct sockaddr pname; | |
ed3751c8 | 4944 | int pnamelen = sizeof (pname); |
44c887be PJ |
4945 | |
4946 | /* If connection failed, getpeername will fail. */ | |
4947 | xerrno = 0; | |
ed3751c8 | 4948 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
4949 | { |
4950 | /* Obtain connect failure code through error slippage. */ | |
4951 | char dummy; | |
dd2a17ab | 4952 | xerrno = errno; |
ed3751c8 | 4953 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
4954 | xerrno = errno; |
4955 | } | |
4956 | } | |
dd2a17ab KS |
4957 | #endif |
4958 | if (xerrno) | |
4959 | { | |
60f0fb11 | 4960 | p->tick = ++process_tick; |
6a09a33b | 4961 | pset_status (p, list2 (Qfailed, make_number (xerrno))); |
dd2a17ab KS |
4962 | deactivate_process (proc); |
4963 | } | |
4964 | else | |
4965 | { | |
6a09a33b | 4966 | pset_status (p, Qrun); |
dd2a17ab KS |
4967 | /* Execute the sentinel here. If we had relied on |
4968 | status_notify to do it later, it will read input | |
4969 | from the process before calling the sentinel. */ | |
4970 | exec_sentinel (proc, build_string ("open\n")); | |
4d2b044c | 4971 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 4972 | { |
60f0fb11 SM |
4973 | FD_SET (p->infd, &input_wait_mask); |
4974 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
4975 | } |
4976 | } | |
4977 | } | |
4978 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4979 | } /* end for each file descriptor */ |
4980 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4981 | |
2beb96f9 | 4982 | unbind_to (count, Qnil); |
d430ee71 | 4983 | |
ffd56f97 JB |
4984 | /* If calling from keyboard input, do not quit |
4985 | since we want to return C-g as an input character. | |
4986 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4987 | if (read_kbd >= 0) |
ffd56f97 JB |
4988 | { |
4989 | /* Prevent input_pending from remaining set if we quit. */ | |
4990 | clear_input_pending (); | |
4991 | QUIT; | |
4992 | } | |
efa2a55c | 4993 | |
d0d6b7c5 JB |
4994 | return got_some_input; |
4995 | } | |
4996 | \f | |
3b9a3dfa RS |
4997 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4998 | ||
4999 | static Lisp_Object | |
d3da34e0 | 5000 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5001 | { |
70949dac | 5002 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5003 | } |
5004 | ||
5005 | static Lisp_Object | |
b93aacde | 5006 | read_process_output_error_handler (Lisp_Object error_val) |
3b9a3dfa | 5007 | { |
b93aacde | 5008 | cmd_error_internal (error_val, "error in process filter: "); |
3b9a3dfa RS |
5009 | Vinhibit_quit = Qt; |
5010 | update_echo_area (); | |
833ba342 | 5011 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5012 | return Qt; |
3b9a3dfa RS |
5013 | } |
5014 | ||
d0d6b7c5 JB |
5015 | /* Read pending output from the process channel, |
5016 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5017 | Yield number of decoded characters read. |
d0d6b7c5 | 5018 | |
116c423c | 5019 | This function reads at most 4096 characters. |
d0d6b7c5 | 5020 | If you want to read all available subprocess output, |
0fa1789e KH |
5021 | you must call it repeatedly until it returns zero. |
5022 | ||
5023 | The characters read are decoded according to PROC's coding-system | |
5024 | for decoding. */ | |
d0d6b7c5 | 5025 | |
ff6daed3 | 5026 | static int |
d3da34e0 | 5027 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5028 | { |
368f4090 | 5029 | register ssize_t nbytes; |
d0d6b7c5 | 5030 | char *chars; |
d0d6b7c5 | 5031 | register Lisp_Object outstream; |
d0d6b7c5 | 5032 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 5033 | register ptrdiff_t opoint; |
c7580538 | 5034 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5035 | int carryover = p->decoding_carryover; |
116c423c | 5036 | int readmax = 4096; |
d311d28c | 5037 | ptrdiff_t count = SPECPDL_INDEX (); |
3a4fa2f2 | 5038 | Lisp_Object odeactivate; |
d0d6b7c5 | 5039 | |
38182d90 | 5040 | chars = alloca (carryover + readmax); |
e7fbaa65 KH |
5041 | if (carryover) |
5042 | /* See the comment above. */ | |
4d2b044c | 5043 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5044 | |
e690ca94 KS |
5045 | #ifdef DATAGRAM_SOCKETS |
5046 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5047 | if (DATAGRAM_CHAN_P (channel)) | |
5048 | { | |
401bf9b4 | 5049 | socklen_t len = datagram_address[channel].len; |
39b1da20 | 5050 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5051 | 0, datagram_address[channel].sa, &len); |
5052 | } | |
5053 | else | |
5054 | #endif | |
6b61353c | 5055 | { |
82eaa333 PE |
5056 | int buffered = 0 <= proc_buffered_char[channel]; |
5057 | if (buffered) | |
5058 | { | |
5059 | chars[carryover] = proc_buffered_char[channel]; | |
5060 | proc_buffered_char[channel] = -1; | |
5061 | } | |
8af55556 | 5062 | #ifdef HAVE_GNUTLS |
959ad23f AS |
5063 | if (p->gnutls_p) |
5064 | nbytes = emacs_gnutls_read (p, chars + carryover + buffered, | |
82eaa333 | 5065 | readmax - buffered); |
8af55556 TZ |
5066 | else |
5067 | #endif | |
82eaa333 PE |
5068 | nbytes = emacs_read (channel, chars + carryover + buffered, |
5069 | readmax - buffered); | |
6b61353c | 5070 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5071 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5072 | { |
60f0fb11 | 5073 | int delay = p->read_output_delay; |
6b61353c KH |
5074 | if (nbytes < 256) |
5075 | { | |
5076 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5077 | { | |
5078 | if (delay == 0) | |
5079 | process_output_delay_count++; | |
5080 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5081 | } | |
5082 | } | |
82eaa333 | 5083 | else if (delay > 0 && nbytes == readmax - buffered) |
6b61353c KH |
5084 | { |
5085 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5086 | if (delay == 0) | |
5087 | process_output_delay_count--; | |
5088 | } | |
60f0fb11 | 5089 | p->read_output_delay = delay; |
6b61353c KH |
5090 | if (delay) |
5091 | { | |
60f0fb11 | 5092 | p->read_output_skip = 1; |
6b61353c KH |
5093 | process_output_skip = 1; |
5094 | } | |
5095 | } | |
5096 | #endif | |
fe07cdfa PE |
5097 | nbytes += buffered; |
5098 | nbytes += buffered && nbytes <= 0; | |
d0d6b7c5 | 5099 | } |
d0d6b7c5 | 5100 | |
60f0fb11 | 5101 | p->decoding_carryover = 0; |
ca65341e | 5102 | |
ed7a4b2d | 5103 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5104 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5105 | if (nbytes <= 0) |
5106 | { | |
5107 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5108 | return nbytes; | |
5109 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5110 | } | |
d0d6b7c5 | 5111 | |
1d2fc612 | 5112 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5113 | nbytes += carryover; |
0fa1789e | 5114 | |
3a4fa2f2 SM |
5115 | odeactivate = Vdeactivate_mark; |
5116 | /* There's no good reason to let process filters change the current | |
5117 | buffer, and many callers of accept-process-output, sit-for, and | |
5118 | friends don't expect current-buffer to be changed from under them. */ | |
66322887 | 5119 | record_unwind_current_buffer (); |
3a4fa2f2 | 5120 | |
1d2fc612 | 5121 | /* Read and dispose of the process output. */ |
4d2b044c | 5122 | outstream = p->filter; |
d0d6b7c5 JB |
5123 | if (!NILP (outstream)) |
5124 | { | |
1d2fc612 | 5125 | Lisp_Object text; |
1882aa38 | 5126 | bool outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5127 | int waiting = waiting_for_user_input_p; |
30c78175 | 5128 | |
dfc21838 RS |
5129 | /* No need to gcpro these, because all we do with them later |
5130 | is test them for EQness, and none of them should be a string. */ | |
aba7731a PE |
5131 | #if 0 |
5132 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 5133 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 5134 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 5135 | #endif |
30c78175 | 5136 | |
3a4fa2f2 SM |
5137 | /* We inhibit quit here instead of just catching it so that |
5138 | hitting ^G when a filter happens to be running won't screw | |
5139 | it up. */ | |
d0d6b7c5 | 5140 | specbind (Qinhibit_quit, Qt); |
6545aada | 5141 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5142 | |
4da2f5be RS |
5143 | /* In case we get recursively called, |
5144 | and we already saved the match data nonrecursively, | |
5145 | save the same match data in safely recursive fashion. */ | |
5146 | if (outer_running_asynch_code) | |
5147 | { | |
5148 | Lisp_Object tem; | |
5149 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5150 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5151 | restore_search_regs (); | |
5152 | record_unwind_save_match_data (); | |
5153 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5154 | } |
5155 | ||
5156 | /* For speed, if a search happens within this code, | |
5157 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5158 | running_asynch_code = 1; |
4da2f5be | 5159 | |
400a67ff | 5160 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 | 5161 | text = coding->dst_object; |
5bbf78c1 | 5162 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5163 | /* A new coding system might be found. */ |
4d2b044c | 5164 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5165 | { |
6a09a33b | 5166 | pset_decode_coding_system (p, Vlast_coding_system_used); |
ed7a4b2d KH |
5167 | |
5168 | /* Don't call setup_coding_system for | |
5169 | proc_decode_coding_system[channel] here. It is done in | |
5170 | detect_coding called via decode_coding above. */ | |
5171 | ||
5172 | /* If a coding system for encoding is not yet decided, we set | |
5173 | it as the same as coding-system for decoding. | |
5174 | ||
5175 | But, before doing that we must check if | |
5176 | proc_encode_coding_system[p->outfd] surely points to a | |
5177 | valid memory because p->outfd will be changed once EOF is | |
5178 | sent to the process. */ | |
4d2b044c | 5179 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5180 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5181 | { |
6a09a33b PE |
5182 | pset_encode_coding_system |
5183 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
4d2b044c | 5184 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5185 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5186 | } |
5187 | } | |
51c6067d | 5188 | |
dd8c7a53 KH |
5189 | if (coding->carryover_bytes > 0) |
5190 | { | |
4d2b044c | 5191 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
6a09a33b | 5192 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5193 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5194 | coding->carryover_bytes); |
8c406a9b | 5195 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5196 | } |
e430e5ba | 5197 | if (SBYTES (text) > 0) |
963b492b SM |
5198 | /* FIXME: It's wrong to wrap or not based on debug-on-error, and |
5199 | sometimes it's simply wrong to wrap (e.g. when called from | |
5200 | accept-process-output). */ | |
dd97db06 KH |
5201 | internal_condition_case_1 (read_process_output_call, |
5202 | Fcons (outstream, | |
5203 | Fcons (proc, Fcons (text, Qnil))), | |
5204 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5205 | read_process_output_error_handler); | |
4da2f5be RS |
5206 | |
5207 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5208 | restore_search_regs (); |
4da2f5be | 5209 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5210 | |
bbce7d72 RS |
5211 | /* Restore waiting_for_user_input_p as it was |
5212 | when we were called, in case the filter clobbered it. */ | |
5213 | waiting_for_user_input_p = waiting; | |
5214 | ||
7973cfa8 RS |
5215 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5216 | because we might have changed minor modes or other things | |
5217 | that affect key bindings. */ | |
dfc21838 RS |
5218 | if (! EQ (Fcurrent_buffer (), obuffer) |
5219 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5220 | #endif |
927e08be RS |
5221 | /* But do it only if the caller is actually going to read events. |
5222 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5223 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5224 | if (waiting_for_user_input_p == -1) |
5225 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5226 | } |
5227 | ||
5228 | /* If no filter, write into buffer if it isn't dead. */ | |
e578f381 | 5229 | else if (!NILP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
d0d6b7c5 | 5230 | { |
b0310da4 | 5231 | Lisp_Object old_read_only; |
d311d28c PE |
5232 | ptrdiff_t old_begv, old_zv; |
5233 | ptrdiff_t old_begv_byte, old_zv_byte; | |
5234 | ptrdiff_t before, before_byte; | |
5235 | ptrdiff_t opoint_byte; | |
ed7a4b2d | 5236 | Lisp_Object text; |
926b7e5e | 5237 | struct buffer *b; |
30c78175 | 5238 | |
4d2b044c | 5239 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5240 | opoint = PT; |
d8a2934e | 5241 | opoint_byte = PT_BYTE; |
4b4deea2 | 5242 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5243 | old_begv = BEGV; |
5244 | old_zv = ZV; | |
d8a2934e RS |
5245 | old_begv_byte = BEGV_BYTE; |
5246 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5247 | |
39eb03f1 | 5248 | bset_read_only (current_buffer, Qnil); |
d0d6b7c5 JB |
5249 | |
5250 | /* Insert new output into buffer | |
5251 | at the current end-of-output marker, | |
5252 | thus preserving logical ordering of input and output. */ | |
4d2b044c | 5253 | if (XMARKER (p->mark)->buffer) |
3193acd2 | 5254 | SET_PT_BOTH (clip_to_bounds (BEGV, |
4d2b044c | 5255 | marker_position (p->mark), ZV), |
3193acd2 | 5256 | clip_to_bounds (BEGV_BYTE, |
4d2b044c | 5257 | marker_byte_position (p->mark), |
d8a2934e | 5258 | ZV_BYTE)); |
d0d6b7c5 | 5259 | else |
d8a2934e | 5260 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5261 | before = PT; |
d8a2934e | 5262 | before_byte = PT_BYTE; |
b0310da4 JB |
5263 | |
5264 | /* If the output marker is outside of the visible region, save | |
5265 | the restriction and widen. */ | |
6ec8bbd2 | 5266 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5267 | Fwiden (); |
5268 | ||
400a67ff | 5269 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 KH |
5270 | text = coding->dst_object; |
5271 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5272 | /* A new coding system might be found. See the comment in the |
5273 | similar code in the previous `if' block. */ | |
4d2b044c | 5274 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5275 | { |
6a09a33b | 5276 | pset_decode_coding_system (p, Vlast_coding_system_used); |
4d2b044c | 5277 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5278 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5279 | { |
6a09a33b PE |
5280 | pset_encode_coding_system |
5281 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
4d2b044c | 5282 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5283 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5284 | } |
5285 | } | |
dd8c7a53 KH |
5286 | if (coding->carryover_bytes > 0) |
5287 | { | |
4d2b044c | 5288 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
6a09a33b | 5289 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5290 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5291 | coding->carryover_bytes); |
8c406a9b | 5292 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5293 | } |
d69864bf | 5294 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5295 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5296 | != ! STRING_MULTIBYTE (text)) |
5297 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5298 | ? Fstring_as_unibyte (text) |
03f04413 | 5299 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5300 | /* Insert before markers in case we are inserting where |
5301 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5302 | insert_from_string_before_markers (text, 0, 0, |
5303 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5304 | |
926b7e5e GM |
5305 | /* Make sure the process marker's position is valid when the |
5306 | process buffer is changed in the signal_after_change above. | |
5307 | W3 is known to do that. */ | |
4d2b044c DA |
5308 | if (BUFFERP (p->buffer) |
5309 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5310 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
926b7e5e | 5311 | else |
4d2b044c | 5312 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
b0310da4 | 5313 | |
d0d6b7c5 JB |
5314 | update_mode_lines++; |
5315 | ||
12ca5cdf RS |
5316 | /* Make sure opoint and the old restrictions |
5317 | float ahead of any new text just as point would. */ | |
5318 | if (opoint >= before) | |
d8a2934e RS |
5319 | { |
5320 | opoint += PT - before; | |
5321 | opoint_byte += PT_BYTE - before_byte; | |
5322 | } | |
12ca5cdf | 5323 | if (old_begv > before) |
d8a2934e RS |
5324 | { |
5325 | old_begv += PT - before; | |
5326 | old_begv_byte += PT_BYTE - before_byte; | |
5327 | } | |
12ca5cdf | 5328 | if (old_zv >= before) |
d8a2934e RS |
5329 | { |
5330 | old_zv += PT - before; | |
5331 | old_zv_byte += PT_BYTE - before_byte; | |
5332 | } | |
12ca5cdf | 5333 | |
b0310da4 | 5334 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5335 | if (old_begv != BEGV || old_zv != ZV) |
5336 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5337 | |
30c78175 | 5338 | |
39eb03f1 | 5339 | bset_read_only (current_buffer, old_read_only); |
d8a2934e | 5340 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5341 | } |
3a4fa2f2 SM |
5342 | /* Handling the process output should not deactivate the mark. */ |
5343 | Vdeactivate_mark = odeactivate; | |
5344 | ||
5345 | unbind_to (count, Qnil); | |
1d2fc612 | 5346 | return nbytes; |
d0d6b7c5 | 5347 | } |
d0d6b7c5 JB |
5348 | \f |
5349 | /* Sending data to subprocess */ | |
5350 | ||
20ca2e94 TN |
5351 | /* In send_process, when a write fails temporarily, |
5352 | wait_reading_process_output is called. It may execute user code, | |
5353 | e.g. timers, that attempts to write new data to the same process. | |
5354 | We must ensure that data is sent in the right order, and not | |
5355 | interspersed half-completed with other writes (Bug#10815). This is | |
5356 | handled by the write_queue element of struct process. It is a list | |
5357 | with each entry having the form | |
5358 | ||
5359 | (string . (offset . length)) | |
5360 | ||
5361 | where STRING is a lisp string, OFFSET is the offset into the | |
5362 | string's byte sequence from which we should begin to send, and | |
5363 | LENGTH is the number of bytes left to send. */ | |
5364 | ||
5365 | /* Create a new entry in write_queue. | |
5366 | INPUT_OBJ should be a buffer, string Qt, or Qnil. | |
5367 | BUF is a pointer to the string sequence of the input_obj or a C | |
5368 | string in case of Qt or Qnil. */ | |
5369 | ||
5370 | static void | |
5371 | write_queue_push (struct Lisp_Process *p, Lisp_Object input_obj, | |
7ea2b339 | 5372 | const char *buf, ptrdiff_t len, int front) |
20ca2e94 | 5373 | { |
7ea2b339 | 5374 | ptrdiff_t offset; |
20ca2e94 TN |
5375 | Lisp_Object entry, obj; |
5376 | ||
5377 | if (STRINGP (input_obj)) | |
5378 | { | |
5379 | offset = buf - SSDATA (input_obj); | |
5380 | obj = input_obj; | |
5381 | } | |
5382 | else | |
5383 | { | |
5384 | offset = 0; | |
5385 | obj = make_unibyte_string (buf, len); | |
5386 | } | |
5387 | ||
5388 | entry = Fcons (obj, Fcons (make_number (offset), make_number (len))); | |
5389 | ||
5390 | if (front) | |
6a09a33b | 5391 | pset_write_queue (p, Fcons (entry, p->write_queue)); |
20ca2e94 | 5392 | else |
6a09a33b | 5393 | pset_write_queue (p, nconc2 (p->write_queue, Fcons (entry, Qnil))); |
20ca2e94 TN |
5394 | } |
5395 | ||
5396 | /* Remove the first element in the write_queue of process P, put its | |
5397 | contents in OBJ, BUF and LEN, and return non-zero. If the | |
5398 | write_queue is empty, return zero. */ | |
5399 | ||
5400 | static int | |
5401 | write_queue_pop (struct Lisp_Process *p, Lisp_Object *obj, | |
7ea2b339 | 5402 | const char **buf, ptrdiff_t *len) |
20ca2e94 TN |
5403 | { |
5404 | Lisp_Object entry, offset_length; | |
7ea2b339 | 5405 | ptrdiff_t offset; |
20ca2e94 | 5406 | |
4d2b044c | 5407 | if (NILP (p->write_queue)) |
20ca2e94 TN |
5408 | return 0; |
5409 | ||
4d2b044c | 5410 | entry = XCAR (p->write_queue); |
6a09a33b | 5411 | pset_write_queue (p, XCDR (p->write_queue)); |
20ca2e94 TN |
5412 | |
5413 | *obj = XCAR (entry); | |
5414 | offset_length = XCDR (entry); | |
5415 | ||
5416 | *len = XINT (XCDR (offset_length)); | |
5417 | offset = XINT (XCAR (offset_length)); | |
7ea2b339 | 5418 | *buf = SSDATA (*obj) + offset; |
20ca2e94 TN |
5419 | |
5420 | return 1; | |
5421 | } | |
5422 | ||
4556b700 RS |
5423 | /* Send some data to process PROC. |
5424 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5425 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5426 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5427 | |
a92e4183 KH |
5428 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5429 | for encoding before it is sent. | |
1fb0098c GM |
5430 | |
5431 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5432 | |
ff6daed3 | 5433 | static void |
4d7e6e51 PE |
5434 | send_process (Lisp_Object proc, const char *buf, ptrdiff_t len, |
5435 | Lisp_Object object) | |
d0d6b7c5 | 5436 | { |
6b61353c | 5437 | struct Lisp_Process *p = XPROCESS (proc); |
368f4090 | 5438 | ssize_t rv; |
0fa1789e | 5439 | struct coding_system *coding; |
6044e593 | 5440 | |
6bfd98e7 | 5441 | if (p->raw_status_new) |
6b61353c | 5442 | update_status (p); |
4d2b044c DA |
5443 | if (! EQ (p->status, Qrun)) |
5444 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5445 | if (p->outfd < 0) |
4d2b044c | 5446 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5447 | |
60f0fb11 | 5448 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5449 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5450 | |
ed7a4b2d KH |
5451 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5452 | || (BUFFERP (object) | |
4b4deea2 | 5453 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5454 | || EQ (object, Qt)) |
278bfdd6 | 5455 | { |
6a09a33b PE |
5456 | pset_encode_coding_system |
5457 | (p, complement_process_encoding_system (p->encode_coding_system)); | |
4d2b044c | 5458 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
fcaf8878 KH |
5459 | { |
5460 | /* The coding system for encoding was changed to raw-text | |
5461 | because we sent a unibyte text previously. Now we are | |
5462 | sending a multibyte text, thus we must encode it by the | |
5463 | original coding system specified for the current process. | |
5464 | ||
da6062e6 PE |
5465 | Another reason we come here is that the coding system |
5466 | was just complemented and a new one was returned by | |
fcaf8878 | 5467 | complement_process_encoding_system. */ |
4d2b044c DA |
5468 | setup_coding_system (p->encode_coding_system, coding); |
5469 | Vlast_coding_system_used = p->encode_coding_system; | |
fcaf8878 | 5470 | } |
e08bbb84 | 5471 | coding->src_multibyte = 1; |
278bfdd6 KH |
5472 | } |
5473 | else | |
5474 | { | |
a0241d01 | 5475 | coding->src_multibyte = 0; |
a92e4183 KH |
5476 | /* For sending a unibyte text, character code conversion should |
5477 | not take place but EOL conversion should. So, setup raw-text | |
5478 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5479 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5480 | { |
5481 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5482 | { | |
5483 | /* But, before changing the coding, we must flush out data. */ | |
5484 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5485 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5486 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5487 | } |
5bbf78c1 KH |
5488 | setup_coding_system (raw_text_coding_system |
5489 | (Vlast_coding_system_used), | |
5490 | coding); | |
e08bbb84 | 5491 | coding->src_multibyte = 0; |
a92e4183 | 5492 | } |
278bfdd6 | 5493 | } |
a4a37e65 KH |
5494 | coding->dst_multibyte = 0; |
5495 | ||
ed7a4b2d | 5496 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5497 | { |
5bbf78c1 | 5498 | coding->dst_object = Qt; |
ed7a4b2d | 5499 | if (BUFFERP (object)) |
0fa1789e | 5500 | { |
d311d28c PE |
5501 | ptrdiff_t from_byte, from, to; |
5502 | ptrdiff_t save_pt, save_pt_byte; | |
5bbf78c1 KH |
5503 | struct buffer *cur = current_buffer; |
5504 | ||
5505 | set_buffer_internal (XBUFFER (object)); | |
5506 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5507 | ||
400a67ff | 5508 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5509 | from = BYTE_TO_CHAR (from_byte); |
5510 | to = BYTE_TO_CHAR (from_byte + len); | |
5511 | TEMP_SET_PT_BOTH (from, from_byte); | |
5512 | encode_coding_object (coding, object, from, from_byte, | |
5513 | to, from_byte + len, Qt); | |
5514 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5515 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5516 | } |
5517 | else if (STRINGP (object)) | |
5518 | { | |
550c8289 KH |
5519 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5520 | SBYTES (object), Qt); | |
0fa1789e | 5521 | } |
5bbf78c1 | 5522 | else |
452294c2 | 5523 | { |
5bbf78c1 KH |
5524 | coding->dst_object = make_unibyte_string (buf, len); |
5525 | coding->produced = len; | |
452294c2 | 5526 | } |
ed7a4b2d | 5527 | |
e7fbaa65 | 5528 | len = coding->produced; |
347f3cd3 | 5529 | object = coding->dst_object; |
400a67ff | 5530 | buf = SSDATA (object); |
0fa1789e | 5531 | } |
d0d6b7c5 | 5532 | |
4556b700 RS |
5533 | if (pty_max_bytes == 0) |
5534 | { | |
5535 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5536 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5537 | if (pty_max_bytes < 0) |
5538 | pty_max_bytes = 250; | |
5539 | #else | |
5540 | pty_max_bytes = 250; | |
5541 | #endif | |
5542 | /* Deduct one, to leave space for the eof. */ | |
5543 | pty_max_bytes--; | |
5544 | } | |
5545 | ||
4d7e6e51 PE |
5546 | /* If there is already data in the write_queue, put the new data |
5547 | in the back of queue. Otherwise, ignore it. */ | |
5548 | if (!NILP (p->write_queue)) | |
5549 | write_queue_push (p, object, buf, len, 0); | |
20ca2e94 | 5550 | |
4d7e6e51 PE |
5551 | do /* while !NILP (p->write_queue) */ |
5552 | { | |
5553 | ptrdiff_t cur_len = -1; | |
5554 | const char *cur_buf; | |
5555 | Lisp_Object cur_object; | |
20ca2e94 | 5556 | |
4d7e6e51 PE |
5557 | /* If write_queue is empty, ignore it. */ |
5558 | if (!write_queue_pop (p, &cur_object, &cur_buf, &cur_len)) | |
0daad115 | 5559 | { |
4d7e6e51 PE |
5560 | cur_len = len; |
5561 | cur_buf = buf; | |
5562 | cur_object = object; | |
5563 | } | |
20ca2e94 | 5564 | |
4d7e6e51 PE |
5565 | while (cur_len > 0) |
5566 | { | |
5567 | /* Send this batch, using one or more write calls. */ | |
5568 | ptrdiff_t written = 0; | |
5569 | int outfd = p->outfd; | |
5570 | #ifdef DATAGRAM_SOCKETS | |
5571 | if (DATAGRAM_CHAN_P (outfd)) | |
20ca2e94 | 5572 | { |
4d7e6e51 PE |
5573 | rv = sendto (outfd, cur_buf, cur_len, |
5574 | 0, datagram_address[outfd].sa, | |
5575 | datagram_address[outfd].len); | |
5576 | if (0 <= rv) | |
5577 | written = rv; | |
5578 | else if (errno == EMSGSIZE) | |
5579 | report_file_error ("sending datagram", Fcons (proc, Qnil)); | |
20ca2e94 | 5580 | } |
4d7e6e51 | 5581 | else |
e690ca94 | 5582 | #endif |
4d7e6e51 | 5583 | { |
8af55556 | 5584 | #ifdef HAVE_GNUTLS |
4d7e6e51 PE |
5585 | if (p->gnutls_p) |
5586 | written = emacs_gnutls_write (p, cur_buf, cur_len); | |
5587 | else | |
8af55556 | 5588 | #endif |
4d7e6e51 PE |
5589 | written = emacs_write (outfd, cur_buf, cur_len); |
5590 | rv = (written ? 0 : -1); | |
6b61353c | 5591 | #ifdef ADAPTIVE_READ_BUFFERING |
4d7e6e51 PE |
5592 | if (p->read_output_delay > 0 |
5593 | && p->adaptive_read_buffering == 1) | |
5594 | { | |
5595 | p->read_output_delay = 0; | |
5596 | process_output_delay_count--; | |
5597 | p->read_output_skip = 0; | |
6b61353c | 5598 | } |
4d7e6e51 PE |
5599 | #endif |
5600 | } | |
4556b700 | 5601 | |
4d7e6e51 PE |
5602 | if (rv < 0) |
5603 | { | |
5604 | if (0 | |
d0d6b7c5 | 5605 | #ifdef EWOULDBLOCK |
4d7e6e51 | 5606 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5607 | #endif |
5608 | #ifdef EAGAIN | |
4d7e6e51 | 5609 | || errno == EAGAIN |
d0d6b7c5 | 5610 | #endif |
4d7e6e51 PE |
5611 | ) |
5612 | /* Buffer is full. Wait, accepting input; | |
5613 | that may allow the program | |
5614 | to finish doing output and read more. */ | |
5615 | { | |
3433b6bd | 5616 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
4d7e6e51 PE |
5617 | /* A gross hack to work around a bug in FreeBSD. |
5618 | In the following sequence, read(2) returns | |
5619 | bogus data: | |
5620 | ||
5621 | write(2) 1022 bytes | |
5622 | write(2) 954 bytes, get EAGAIN | |
5623 | read(2) 1024 bytes in process_read_output | |
5624 | read(2) 11 bytes in process_read_output | |
5625 | ||
5626 | That is, read(2) returns more bytes than have | |
5627 | ever been written successfully. The 1033 bytes | |
5628 | read are the 1022 bytes written successfully | |
5629 | after processing (for example with CRs added if | |
5630 | the terminal is set up that way which it is | |
5631 | here). The same bytes will be seen again in a | |
5632 | later read(2), without the CRs. */ | |
5633 | ||
5634 | if (errno == EAGAIN) | |
5635 | { | |
5636 | int flags = FWRITE; | |
5637 | ioctl (p->outfd, TIOCFLUSH, &flags); | |
5638 | } | |
3433b6bd | 5639 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5640 | |
4d7e6e51 PE |
5641 | /* Put what we should have written in wait_queue. */ |
5642 | write_queue_push (p, cur_object, cur_buf, cur_len, 1); | |
5643 | wait_reading_process_output (0, 20 * 1000 * 1000, | |
5644 | 0, 0, Qnil, NULL, 0); | |
5645 | /* Reread queue, to see what is left. */ | |
5646 | break; | |
0daad115 | 5647 | } |
4d7e6e51 PE |
5648 | else if (errno == EPIPE) |
5649 | { | |
5650 | p->raw_status_new = 0; | |
5651 | pset_status (p, list2 (Qexit, make_number (256))); | |
5652 | p->tick = ++process_tick; | |
5653 | deactivate_process (proc); | |
5654 | error ("process %s no longer connected to pipe; closed it", | |
5655 | SDATA (p->name)); | |
5656 | } | |
5657 | else | |
5658 | /* This is a real error. */ | |
5659 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
0daad115 | 5660 | } |
4d7e6e51 PE |
5661 | cur_buf += written; |
5662 | cur_len -= written; | |
0daad115 | 5663 | } |
d0d6b7c5 | 5664 | } |
4d7e6e51 | 5665 | while (!NILP (p->write_queue)); |
d0d6b7c5 JB |
5666 | } |
5667 | ||
5668 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5669 | 3, 3, 0, |
5670 | doc: /* Send current contents of region as input to PROCESS. | |
5671 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5672 | nil, indicating the current buffer's process. | |
5673 | Called from program, takes three arguments, PROCESS, START and END. | |
5674 | If the region is more than 500 characters long, | |
5675 | it is sent in several bunches. This may happen even for shorter regions. | |
5676 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5677 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5678 | { |
5679 | Lisp_Object proc; | |
d311d28c | 5680 | ptrdiff_t start1, end1; |
d0d6b7c5 JB |
5681 | |
5682 | proc = get_process (process); | |
5683 | validate_region (&start, &end); | |
1b234f64 KH |
5684 | |
5685 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5686 | move_gap (XINT (start)); | |
5687 | ||
5688 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5689 | end1 = CHAR_TO_BYTE (XINT (end)); | |
400a67ff | 5690 | send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1, |
1b234f64 KH |
5691 | Fcurrent_buffer ()); |
5692 | ||
d0d6b7c5 JB |
5693 | return Qnil; |
5694 | } | |
5695 | ||
5696 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5697 | 2, 2, 0, |
5698 | doc: /* Send PROCESS the contents of STRING as input. | |
5699 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5700 | nil, indicating the current buffer's process. | |
5701 | If STRING is more than 500 characters long, | |
5702 | it is sent in several bunches. This may happen even for shorter strings. | |
5703 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5704 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5705 | { |
5706 | Lisp_Object proc; | |
b7826503 | 5707 | CHECK_STRING (string); |
d0d6b7c5 | 5708 | proc = get_process (process); |
400a67ff | 5709 | send_process (proc, SSDATA (string), |
1b234f64 | 5710 | SBYTES (string), string); |
d0d6b7c5 JB |
5711 | return Qnil; |
5712 | } | |
5713 | \f | |
16782258 JD |
5714 | /* Return the foreground process group for the tty/pty that |
5715 | the process P uses. */ | |
dde14581 | 5716 | static pid_t |
d3da34e0 | 5717 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 | 5718 | { |
dde14581 | 5719 | pid_t gid = -1; |
16782258 | 5720 | |
f3d9532b | 5721 | #ifdef TIOCGPGRP |
4d2b044c | 5722 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5723 | { |
5724 | int fd; | |
5725 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5726 | master side. Try the slave side. */ | |
4d2b044c | 5727 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5728 | |
5729 | if (fd != -1) | |
5730 | { | |
5731 | ioctl (fd, TIOCGPGRP, &gid); | |
5732 | emacs_close (fd); | |
5733 | } | |
5734 | } | |
5735 | #endif /* defined (TIOCGPGRP ) */ | |
5736 | ||
5737 | return gid; | |
5738 | } | |
5739 | ||
b81ea5ef RS |
5740 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5741 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5742 | doc: /* Return t if PROCESS has given the terminal to a child. |
5743 | If the operating system does not make it possible to find out, | |
5744 | return t unconditionally. */) | |
5842a27b | 5745 | (Lisp_Object process) |
b81ea5ef RS |
5746 | { |
5747 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5748 | in a way that will cause returning t. */ | |
dde14581 | 5749 | pid_t gid; |
b81ea5ef RS |
5750 | Lisp_Object proc; |
5751 | struct Lisp_Process *p; | |
5752 | ||
5753 | proc = get_process (process); | |
5754 | p = XPROCESS (proc); | |
5755 | ||
4d2b044c | 5756 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5757 | error ("Process %s is not a subprocess", |
4d2b044c | 5758 | SDATA (p->name)); |
60f0fb11 | 5759 | if (p->infd < 0) |
b81ea5ef | 5760 | error ("Process %s is not active", |
4d2b044c | 5761 | SDATA (p->name)); |
b81ea5ef | 5762 | |
16782258 | 5763 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5764 | |
6bfd98e7 | 5765 | if (gid == p->pid) |
b81ea5ef RS |
5766 | return Qnil; |
5767 | return Qt; | |
5768 | } | |
5769 | \f | |
d0d6b7c5 | 5770 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5771 | If CURRENT_GROUP is t, that means send to the process group |
5772 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5773 | This is used for various commands in shell mode. |
b81ea5ef RS |
5774 | If CURRENT_GROUP is lambda, that means send to the process group |
5775 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5776 | ||
d0d6b7c5 | 5777 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5778 | right away. |
5779 | ||
5780 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5781 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5782 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5783 | |
f9738840 | 5784 | static void |
d3da34e0 JB |
5785 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5786 | int nomsg) | |
d0d6b7c5 JB |
5787 | { |
5788 | Lisp_Object proc; | |
5789 | register struct Lisp_Process *p; | |
dde14581 | 5790 | pid_t gid; |
d0d6b7c5 JB |
5791 | int no_pgrp = 0; |
5792 | ||
5793 | proc = get_process (process); | |
5794 | p = XPROCESS (proc); | |
5795 | ||
4d2b044c | 5796 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5797 | error ("Process %s is not a subprocess", |
4d2b044c | 5798 | SDATA (p->name)); |
60f0fb11 | 5799 | if (p->infd < 0) |
d0d6b7c5 | 5800 | error ("Process %s is not active", |
4d2b044c | 5801 | SDATA (p->name)); |
d0d6b7c5 | 5802 | |
60f0fb11 | 5803 | if (!p->pty_flag) |
d0d6b7c5 JB |
5804 | current_group = Qnil; |
5805 | ||
d0d6b7c5 | 5806 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5807 | if (NILP (current_group)) |
5808 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5809 | gid = p->pid; |
2af70a0c | 5810 | else |
d0d6b7c5 | 5811 | { |
b0310da4 | 5812 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5813 | /* If possible, send signals to the entire pgrp |
5814 | by sending an input character to it. */ | |
b0310da4 | 5815 | |
6be429b1 | 5816 | struct termios t; |
7f916a36 RS |
5817 | cc_t *sig_char = NULL; |
5818 | ||
60f0fb11 | 5819 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5820 | |
5821 | switch (signo) | |
5822 | { | |
5823 | case SIGINT: | |
7f916a36 RS |
5824 | sig_char = &t.c_cc[VINTR]; |
5825 | break; | |
6be429b1 JB |
5826 | |
5827 | case SIGQUIT: | |
7f916a36 RS |
5828 | sig_char = &t.c_cc[VQUIT]; |
5829 | break; | |
6be429b1 JB |
5830 | |
5831 | case SIGTSTP: | |
d0adf46f | 5832 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5833 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5834 | #else |
7f916a36 | 5835 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5836 | #endif |
7f916a36 | 5837 | break; |
6be429b1 JB |
5838 | } |
5839 | ||
ca4313d5 | 5840 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc | 5841 | { |
f990b4e5 | 5842 | send_process (proc, (char *) sig_char, 1, Qnil); |
f1c206fc RS |
5843 | return; |
5844 | } | |
5845 | /* If we can't send the signal with a character, | |
5846 | fall through and send it another way. */ | |
f1c206fc RS |
5847 | |
5848 | /* The code above may fall through if it can't | |
5849 | handle the signal. */ | |
20505336 | 5850 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5851 | |
177c0ea7 | 5852 | #ifdef TIOCGPGRP |
2af70a0c | 5853 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5854 | Otherwise, use the pty to get the pgrp. |
5855 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5856 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5857 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5858 | His patch indicates that if TIOCGPGRP returns an error, then |
5859 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5860 | |
16782258 | 5861 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5862 | |
16782258 JD |
5863 | if (gid == -1) |
5864 | /* If we can't get the information, assume | |
5865 | the shell owns the tty. */ | |
6bfd98e7 | 5866 | gid = p->pid; |
2af70a0c RS |
5867 | |
5868 | /* It is not clear whether anything really can set GID to -1. | |
5869 | Perhaps on some system one of those ioctls can or could do so. | |
5870 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5871 | if (gid == -1) |
5872 | no_pgrp = 1; | |
b0310da4 | 5873 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5874 | /* Can't select pgrps on this system, so we know that |
5875 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5876 | gid = p->pid; |
301c3fe4 | 5877 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5878 | |
5879 | /* If current_group is lambda, and the shell owns the terminal, | |
5880 | don't send any signal. */ | |
6bfd98e7 | 5881 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5882 | return; |
d0d6b7c5 | 5883 | } |
d0d6b7c5 JB |
5884 | |
5885 | switch (signo) | |
5886 | { | |
5887 | #ifdef SIGCONT | |
5888 | case SIGCONT: | |
6bfd98e7 | 5889 | p->raw_status_new = 0; |
6a09a33b | 5890 | pset_status (p, Qrun); |
60f0fb11 | 5891 | p->tick = ++process_tick; |
d0d6b7c5 | 5892 | if (!nomsg) |
e42bdf01 CY |
5893 | { |
5894 | status_notify (NULL); | |
5895 | redisplay_preserve_echo_area (13); | |
5896 | } | |
d0d6b7c5 | 5897 | break; |
301c3fe4 | 5898 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 5899 | case SIGINT: |
d0d6b7c5 | 5900 | case SIGQUIT: |
d0d6b7c5 | 5901 | case SIGKILL: |
60f0fb11 | 5902 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5903 | break; |
5904 | } | |
5905 | ||
5906 | /* If we don't have process groups, send the signal to the immediate | |
5907 | subprocess. That isn't really right, but it's better than any | |
5908 | obvious alternative. */ | |
5909 | if (no_pgrp) | |
5910 | { | |
6bfd98e7 | 5911 | kill (p->pid, signo); |
d0d6b7c5 JB |
5912 | return; |
5913 | } | |
5914 | ||
5915 | /* gid may be a pid, or minus a pgrp's number */ | |
5916 | #ifdef TIOCSIGSEND | |
5917 | if (!NILP (current_group)) | |
16782258 | 5918 | { |
60f0fb11 | 5919 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
5920 | EMACS_KILLPG (gid, signo); |
5921 | } | |
d0d6b7c5 JB |
5922 | else |
5923 | { | |
6bfd98e7 | 5924 | gid = - p->pid; |
d0d6b7c5 JB |
5925 | kill (gid, signo); |
5926 | } | |
301c3fe4 | 5927 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5928 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5929 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5930 | } |
5931 | ||
5932 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5933 | doc: /* Interrupt process PROCESS. |
5934 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5935 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5936 | Second arg CURRENT-GROUP non-nil means send signal to |
5937 | the current process-group of the process's controlling terminal | |
5938 | rather than to the process's own process group. | |
5939 | If the process is a shell, this means interrupt current subjob | |
5940 | rather than the shell. | |
5941 | ||
5942 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5943 | don't send the signal. */) | |
5842a27b | 5944 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5945 | { |
5946 | process_send_signal (process, SIGINT, current_group, 0); | |
5947 | return process; | |
5948 | } | |
5949 | ||
5950 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5951 | doc: /* Kill process PROCESS. May be process or name of one. |
5952 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5953 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5954 | { |
5955 | process_send_signal (process, SIGKILL, current_group, 0); | |
5956 | return process; | |
5957 | } | |
5958 | ||
5959 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5960 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5961 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5962 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5963 | { |
5964 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5965 | return process; | |
5966 | } | |
5967 | ||
5968 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5969 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5970 | See function `interrupt-process' for more details on usage. |
d888760c GM |
5971 | If PROCESS is a network or serial process, inhibit handling of incoming |
5972 | traffic. */) | |
5842a27b | 5973 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 5974 | { |
d888760c | 5975 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
5976 | { |
5977 | struct Lisp_Process *p; | |
177c0ea7 | 5978 | |
e690ca94 | 5979 | p = XPROCESS (process); |
4d2b044c | 5980 | if (NILP (p->command) |
60f0fb11 | 5981 | && p->infd >= 0) |
e690ca94 | 5982 | { |
60f0fb11 SM |
5983 | FD_CLR (p->infd, &input_wait_mask); |
5984 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 | 5985 | } |
6a09a33b | 5986 | pset_command (p, Qt); |
e690ca94 KS |
5987 | return process; |
5988 | } | |
d0d6b7c5 | 5989 | #ifndef SIGTSTP |
a9a73d6c | 5990 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
5991 | #else |
5992 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5993 | #endif | |
5994 | return process; | |
5995 | } | |
5996 | ||
5997 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5998 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5999 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6000 | If PROCESS is a network or serial process, resume handling of incoming |
6001 | traffic. */) | |
5842a27b | 6002 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6003 | { |
d888760c | 6004 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6005 | { |
6006 | struct Lisp_Process *p; | |
6007 | ||
6008 | p = XPROCESS (process); | |
4d2b044c | 6009 | if (EQ (p->command, Qt) |
60f0fb11 | 6010 | && p->infd >= 0 |
4d2b044c | 6011 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
e690ca94 | 6012 | { |
60f0fb11 SM |
6013 | FD_SET (p->infd, &input_wait_mask); |
6014 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6015 | #ifdef WINDOWSNT |
6016 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6017 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 6018 | #else /* not WINDOWSNT */ |
d888760c | 6019 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 6020 | #endif /* not WINDOWSNT */ |
e690ca94 | 6021 | } |
6a09a33b | 6022 | pset_command (p, Qnil); |
e690ca94 KS |
6023 | return process; |
6024 | } | |
d0d6b7c5 JB |
6025 | #ifdef SIGCONT |
6026 | process_send_signal (process, SIGCONT, current_group, 0); | |
6027 | #else | |
a9a73d6c | 6028 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6029 | #endif |
6030 | return process; | |
6031 | } | |
6032 | ||
6033 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6034 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6035 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6036 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6037 | process to signal; in this case, the process need not be a child of |
6038 | this Emacs. | |
fdb82f93 | 6039 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6040 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6041 | { |
6bfd98e7 | 6042 | pid_t pid; |
cdd5ea86 | 6043 | |
cdd5ea86 KS |
6044 | if (STRINGP (process)) |
6045 | { | |
d311d28c PE |
6046 | Lisp_Object tem = Fget_process (process); |
6047 | if (NILP (tem)) | |
cdd5ea86 | 6048 | { |
d44287d4 PE |
6049 | Lisp_Object process_number = |
6050 | string_to_number (SSDATA (process), 10, 1); | |
6051 | if (INTEGERP (process_number) || FLOATP (process_number)) | |
6052 | tem = process_number; | |
cdd5ea86 KS |
6053 | } |
6054 | process = tem; | |
6055 | } | |
d44287d4 | 6056 | else if (!NUMBERP (process)) |
cdd5ea86 | 6057 | process = get_process (process); |
177c0ea7 | 6058 | |
cdd5ea86 KS |
6059 | if (NILP (process)) |
6060 | return process; | |
6061 | ||
d83cf4cc PE |
6062 | if (NUMBERP (process)) |
6063 | CONS_TO_INTEGER (process, pid_t, pid); | |
d44287d4 PE |
6064 | else |
6065 | { | |
6066 | CHECK_PROCESS (process); | |
6067 | pid = XPROCESS (process)->pid; | |
6068 | if (pid <= 0) | |
4d2b044c | 6069 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
d44287d4 | 6070 | } |
4766242d | 6071 | |
59324b1d | 6072 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6073 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6074 | XSETINT (sigcode, VALUE) |
6075 | ||
6076 | if (INTEGERP (sigcode)) | |
d311d28c | 6077 | CHECK_TYPE_RANGED_INTEGER (int, sigcode); |
4766242d RS |
6078 | else |
6079 | { | |
25a48bd0 | 6080 | char *name; |
4766242d | 6081 | |
b7826503 | 6082 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6083 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6084 | |
ed3751c8 | 6085 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6086 | name += 3; |
6087 | ||
4766242d RS |
6088 | if (0) |
6089 | ; | |
59324b1d KS |
6090 | #ifdef SIGUSR1 |
6091 | parse_signal ("usr1", SIGUSR1); | |
6092 | #endif | |
6093 | #ifdef SIGUSR2 | |
6094 | parse_signal ("usr2", SIGUSR2); | |
6095 | #endif | |
59324b1d | 6096 | parse_signal ("term", SIGTERM); |
4766242d | 6097 | #ifdef SIGHUP |
59324b1d | 6098 | parse_signal ("hup", SIGHUP); |
4766242d | 6099 | #endif |
59324b1d | 6100 | parse_signal ("int", SIGINT); |
4766242d | 6101 | #ifdef SIGQUIT |
59324b1d | 6102 | parse_signal ("quit", SIGQUIT); |
4766242d | 6103 | #endif |
59324b1d | 6104 | parse_signal ("ill", SIGILL); |
59324b1d | 6105 | parse_signal ("abrt", SIGABRT); |
4766242d | 6106 | #ifdef SIGEMT |
59324b1d | 6107 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6108 | #endif |
6109 | #ifdef SIGKILL | |
59324b1d | 6110 | parse_signal ("kill", SIGKILL); |
4766242d | 6111 | #endif |
59324b1d | 6112 | parse_signal ("fpe", SIGFPE); |
4766242d | 6113 | #ifdef SIGBUS |
59324b1d | 6114 | parse_signal ("bus", SIGBUS); |
4766242d | 6115 | #endif |
59324b1d | 6116 | parse_signal ("segv", SIGSEGV); |
4766242d | 6117 | #ifdef SIGSYS |
59324b1d | 6118 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6119 | #endif |
6120 | #ifdef SIGPIPE | |
59324b1d | 6121 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6122 | #endif |
6123 | #ifdef SIGALRM | |
59324b1d | 6124 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6125 | #endif |
6126 | #ifdef SIGURG | |
59324b1d | 6127 | parse_signal ("urg", SIGURG); |
4766242d RS |
6128 | #endif |
6129 | #ifdef SIGSTOP | |
59324b1d | 6130 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6131 | #endif |
6132 | #ifdef SIGTSTP | |
59324b1d | 6133 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6134 | #endif |
6135 | #ifdef SIGCONT | |
59324b1d | 6136 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6137 | #endif |
6138 | #ifdef SIGCHLD | |
59324b1d | 6139 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6140 | #endif |
6141 | #ifdef SIGTTIN | |
59324b1d | 6142 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6143 | #endif |
6144 | #ifdef SIGTTOU | |
59324b1d | 6145 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6146 | #endif |
6147 | #ifdef SIGIO | |
59324b1d | 6148 | parse_signal ("io", SIGIO); |
4766242d RS |
6149 | #endif |
6150 | #ifdef SIGXCPU | |
59324b1d | 6151 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6152 | #endif |
6153 | #ifdef SIGXFSZ | |
59324b1d | 6154 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6155 | #endif |
6156 | #ifdef SIGVTALRM | |
59324b1d | 6157 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6158 | #endif |
6159 | #ifdef SIGPROF | |
59324b1d | 6160 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6161 | #endif |
6162 | #ifdef SIGWINCH | |
59324b1d | 6163 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6164 | #endif |
6165 | #ifdef SIGINFO | |
59324b1d | 6166 | parse_signal ("info", SIGINFO); |
4766242d RS |
6167 | #endif |
6168 | else | |
9fa195a2 | 6169 | error ("Undefined signal name %s", name); |
4766242d RS |
6170 | } |
6171 | ||
59324b1d | 6172 | #undef parse_signal |
4766242d | 6173 | |
6bfd98e7 | 6174 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6175 | } |
6176 | ||
6177 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6178 | doc: /* Make PROCESS see end-of-file in its input. |
6179 | EOF comes after any text already sent to it. | |
6180 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6181 | nil, indicating the current buffer's process. | |
6182 | If PROCESS is a network connection, or is a process communicating | |
6183 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6184 | text to PROCESS after you call this function. |
6185 | If PROCESS is a serial process, wait until all output written to the | |
6186 | process has been transmitted to the serial port. */) | |
5842a27b | 6187 | (Lisp_Object process) |
d0d6b7c5 JB |
6188 | { |
6189 | Lisp_Object proc; | |
de7fbd09 | 6190 | struct coding_system *coding; |
d0d6b7c5 | 6191 | |
e690ca94 KS |
6192 | if (DATAGRAM_CONN_P (process)) |
6193 | return process; | |
6194 | ||
d0d6b7c5 | 6195 | proc = get_process (process); |
60f0fb11 | 6196 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6197 | |
6198 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6199 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 | 6200 | update_status (XPROCESS (proc)); |
4d2b044c DA |
6201 | if (! EQ (XPROCESS (proc)->status, Qrun)) |
6202 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); | |
577d03d5 | 6203 | |
de7fbd09 KH |
6204 | if (CODING_REQUIRE_FLUSHING (coding)) |
6205 | { | |
6206 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6207 | send_process (proc, "", 0, Qnil); | |
6208 | } | |
6209 | ||
60f0fb11 | 6210 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6211 | send_process (proc, "\004", 1, Qnil); |
4d2b044c | 6212 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6213 | { |
a7ebc409 | 6214 | #ifndef WINDOWSNT |
d888760c GM |
6215 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6216 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6217 | #endif /* not WINDOWSNT */ |
d888760c GM |
6218 | /* Do nothing on Windows because writes are blocking. */ |
6219 | } | |
d0d6b7c5 JB |
6220 | else |
6221 | { | |
4525f571 RS |
6222 | int old_outfd, new_outfd; |
6223 | ||
93853f3d | 6224 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6225 | /* If this is a network connection, or socketpair is used |
6226 | for communication with the subprocess, call shutdown to cause EOF. | |
6227 | (In some old system, shutdown to socketpair doesn't work. | |
6228 | Then we just can't win.) */ | |
4d2b044c | 6229 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6230 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6231 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6232 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6233 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6234 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6235 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6236 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6237 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6238 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 | 6239 | if (new_outfd < 0) |
1088b922 | 6240 | emacs_abort (); |
60f0fb11 | 6241 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6242 | |
6243 | if (!proc_encode_coding_system[new_outfd]) | |
6244 | proc_encode_coding_system[new_outfd] | |
23f86fce | 6245 | = xmalloc (sizeof (struct coding_system)); |
ae1d87e2 PE |
6246 | *proc_encode_coding_system[new_outfd] |
6247 | = *proc_encode_coding_system[old_outfd]; | |
72af86bd AS |
6248 | memset (proc_encode_coding_system[old_outfd], 0, |
6249 | sizeof (struct coding_system)); | |
4525f571 | 6250 | |
60f0fb11 | 6251 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6252 | } |
d0d6b7c5 JB |
6253 | return process; |
6254 | } | |
d0d6b7c5 | 6255 | \f |
0b3d4a47 PE |
6256 | /* If the status of the process DESIRED has changed, return true and |
6257 | set *STATUS to its exit status; otherwise, return false. | |
6258 | If HAVE is nonnegative, assume that HAVE = waitpid (HAVE, STATUS, ...) | |
6259 | has already been invoked, and do not invoke waitpid again. */ | |
6260 | ||
6261 | static bool | |
6262 | process_status_retrieved (pid_t desired, pid_t have, int *status) | |
6263 | { | |
6264 | if (have < 0) | |
6265 | { | |
6266 | /* Invoke waitpid only with a known process ID; do not invoke | |
6267 | waitpid with a nonpositive argument. Otherwise, Emacs might | |
6268 | reap an unwanted process by mistake. For example, invoking | |
6269 | waitpid (-1, ...) can mess up glib by reaping glib's subprocesses, | |
6270 | so that another thread running glib won't find them. */ | |
6271 | do | |
6272 | have = waitpid (desired, status, WNOHANG | WUNTRACED); | |
6273 | while (have < 0 && errno == EINTR); | |
6274 | } | |
6275 | ||
6276 | return have == desired; | |
6277 | } | |
6278 | ||
6279 | /* If PID is nonnegative, the child process PID with wait status W has | |
6280 | changed its status; record this and return true. | |
6281 | ||
6282 | If PID is negative, ignore W, and look for known child processes | |
6283 | of Emacs whose status have changed. For each one found, record its new | |
6284 | status. | |
177c0ea7 | 6285 | |
3fed8ad5 GM |
6286 | All we do is change the status; we do not run sentinels or print |
6287 | notifications. That is saved for the next time keyboard input is | |
6288 | done, in order to avoid timing errors. | |
6289 | ||
6290 | ** WARNING: this can be called during garbage collection. | |
6291 | Therefore, it must not be fooled by the presence of mark bits in | |
6292 | Lisp objects. | |
6293 | ||
6294 | ** USG WARNING: Although it is not obvious from the documentation | |
6295 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6296 | signal() before executing at least one wait(), otherwise the | |
6297 | handler will be called again, resulting in an infinite loop. The | |
6298 | relevant portion of the documentation reads "SIGCLD signals will be | |
6299 | queued and the signal-catching function will be continually | |
6300 | reentered until the queue is empty". Invoking signal() causes the | |
6301 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6302 | Inc. |
6303 | ||
6304 | ** Malloc WARNING: This should never call malloc either directly or | |
6305 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6306 | |
4d7e6e51 PE |
6307 | void |
6308 | record_child_status_change (pid_t pid, int w) | |
d0d6b7c5 | 6309 | { |
4d7e6e51 | 6310 | #ifdef SIGCHLD |
0b3d4a47 PE |
6311 | |
6312 | # ifdef WNOHANG | |
6313 | /* On POSIXish hosts, record at most one child only if we already | |
6314 | know one child that has exited. */ | |
6315 | bool record_at_most_one_child = 0 <= pid; | |
6316 | # else | |
6317 | /* On DOS_NT (the only porting target that lacks WNOHANG), | |
6318 | record the status of at most one child process, since the SIGCHLD | |
6319 | handler must return right away. If any more processes want to | |
6320 | signal us, we will get another signal. */ | |
6321 | bool record_at_most_one_child = 1; | |
6322 | # endif | |
6323 | ||
20ef56db | 6324 | Lisp_Object tail; |
d0d6b7c5 | 6325 | |
20ef56db | 6326 | /* Find the process that signaled us, and record its status. */ |
d0d6b7c5 | 6327 | |
20ef56db PE |
6328 | /* The process can have been deleted by Fdelete_process. */ |
6329 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) | |
6330 | { | |
0b3d4a47 PE |
6331 | bool all_pids_are_fixnums |
6332 | = (MOST_NEGATIVE_FIXNUM <= TYPE_MINIMUM (pid_t) | |
6333 | && TYPE_MAXIMUM (pid_t) <= MOST_POSITIVE_FIXNUM); | |
20ef56db | 6334 | Lisp_Object xpid = XCAR (tail); |
0b3d4a47 | 6335 | if (all_pids_are_fixnums ? INTEGERP (xpid) : NUMBERP (xpid)) |
a5cfdda8 | 6336 | { |
0b3d4a47 PE |
6337 | pid_t deleted_pid; |
6338 | if (INTEGERP (xpid)) | |
6339 | deleted_pid = XINT (xpid); | |
6340 | else | |
6341 | deleted_pid = XFLOAT_DATA (xpid); | |
6342 | if (process_status_retrieved (deleted_pid, pid, &w)) | |
6343 | { | |
6344 | XSETCAR (tail, Qnil); | |
6345 | if (record_at_most_one_child) | |
6346 | return; | |
6347 | } | |
a5cfdda8 | 6348 | } |
20ef56db | 6349 | } |
a5cfdda8 | 6350 | |
20ef56db | 6351 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ |
20ef56db PE |
6352 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
6353 | { | |
0b3d4a47 PE |
6354 | Lisp_Object proc = XCDR (XCAR (tail)); |
6355 | struct Lisp_Process *p = XPROCESS (proc); | |
6356 | if (p->alive && process_status_retrieved (p->pid, pid, &w)) | |
6357 | { | |
6358 | /* Change the status of the process that was found. */ | |
6359 | p->tick = ++process_tick; | |
6360 | p->raw_status = w; | |
6361 | p->raw_status_new = 1; | |
177c0ea7 | 6362 | |
0b3d4a47 PE |
6363 | /* If process has terminated, stop waiting for its output. */ |
6364 | if (WIFSIGNALED (w) || WIFEXITED (w)) | |
6365 | { | |
6366 | int clear_desc_flag = 0; | |
6367 | p->alive = 0; | |
6368 | if (p->infd >= 0) | |
6369 | clear_desc_flag = 1; | |
e98d950b | 6370 | |
0b3d4a47 PE |
6371 | /* clear_desc_flag avoids a compiler bug in Microsoft C. */ |
6372 | if (clear_desc_flag) | |
6373 | { | |
6374 | FD_CLR (p->infd, &input_wait_mask); | |
6375 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
6376 | } | |
6377 | } | |
6be429b1 | 6378 | |
0b3d4a47 PE |
6379 | /* Tell wait_reading_process_output that it needs to wake up and |
6380 | look around. */ | |
6381 | if (input_available_clear_time) | |
6382 | *input_available_clear_time = make_emacs_time (0, 0); | |
d0d6b7c5 | 6383 | |
0b3d4a47 PE |
6384 | if (record_at_most_one_child) |
6385 | return; | |
d0d6b7c5 | 6386 | } |
20ef56db | 6387 | } |
0b3d4a47 PE |
6388 | |
6389 | if (0 <= pid) | |
20ef56db | 6390 | { |
0b3d4a47 PE |
6391 | /* The caller successfully waited for a pid but no asynchronous |
6392 | process was found for it, so this is a synchronous process. */ | |
6393 | ||
20ef56db PE |
6394 | synch_process_alive = 0; |
6395 | ||
6396 | /* Report the status of the synchronous process. */ | |
6397 | if (WIFEXITED (w)) | |
6398 | synch_process_retcode = WEXITSTATUS (w); | |
6399 | else if (WIFSIGNALED (w)) | |
6400 | synch_process_termsig = WTERMSIG (w); | |
6401 | ||
6402 | /* Tell wait_reading_process_output that it needs to wake up and | |
6403 | look around. */ | |
6404 | if (input_available_clear_time) | |
6405 | *input_available_clear_time = make_emacs_time (0, 0); | |
6406 | } | |
4d7e6e51 | 6407 | #endif |
20ef56db | 6408 | } |
a5cfdda8 | 6409 | |
4d7e6e51 PE |
6410 | #ifdef SIGCHLD |
6411 | ||
20ef56db PE |
6412 | static void |
6413 | handle_child_signal (int sig) | |
6414 | { | |
0b3d4a47 | 6415 | record_child_status_change (-1, 0); |
d0d6b7c5 | 6416 | } |
20ef56db PE |
6417 | |
6418 | static void | |
6419 | deliver_child_signal (int sig) | |
6420 | { | |
4d7e6e51 | 6421 | deliver_process_signal (sig, handle_child_signal); |
20ef56db PE |
6422 | } |
6423 | ||
a5cfdda8 | 6424 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6425 | \f |
6426 | ||
6427 | static Lisp_Object | |
d3da34e0 | 6428 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6429 | { |
6a09a33b | 6430 | pset_sentinel (XPROCESS (XCAR (data)), XCDR (data)); |
d0d6b7c5 JB |
6431 | return Qnil; |
6432 | } | |
6433 | ||
3b9a3dfa | 6434 | static Lisp_Object |
b93aacde | 6435 | exec_sentinel_error_handler (Lisp_Object error_val) |
3b9a3dfa | 6436 | { |
b93aacde | 6437 | cmd_error_internal (error_val, "error in process sentinel: "); |
3b9a3dfa RS |
6438 | Vinhibit_quit = Qt; |
6439 | update_echo_area (); | |
833ba342 | 6440 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6441 | return Qt; |
3b9a3dfa RS |
6442 | } |
6443 | ||
d0d6b7c5 | 6444 | static void |
d3da34e0 | 6445 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6446 | { |
aba7731a | 6447 | Lisp_Object sentinel, odeactivate; |
1882aa38 | 6448 | struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 6449 | ptrdiff_t count = SPECPDL_INDEX (); |
1882aa38 | 6450 | bool outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6451 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6452 | |
84af9896 RS |
6453 | if (inhibit_sentinels) |
6454 | return; | |
6455 | ||
dfc21838 RS |
6456 | /* No need to gcpro these, because all we do with them later |
6457 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6458 | odeactivate = Vdeactivate_mark; |
aba7731a PE |
6459 | #if 0 |
6460 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 6461 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6462 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 6463 | #endif |
dfc21838 | 6464 | |
97e53006 SM |
6465 | /* There's no good reason to let sentinels change the current |
6466 | buffer, and many callers of accept-process-output, sit-for, and | |
6467 | friends don't expect current-buffer to be changed from under them. */ | |
66322887 | 6468 | record_unwind_current_buffer (); |
97e53006 | 6469 | |
4d2b044c | 6470 | sentinel = p->sentinel; |
d0d6b7c5 JB |
6471 | if (NILP (sentinel)) |
6472 | return; | |
6473 | ||
6474 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6475 | assure that it gets restored no matter how the sentinel exits. */ | |
6a09a33b | 6476 | pset_sentinel (p, Qnil); |
d0d6b7c5 JB |
6477 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); |
6478 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6479 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6480 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6481 | |
4da2f5be RS |
6482 | /* In case we get recursively called, |
6483 | and we already saved the match data nonrecursively, | |
6484 | save the same match data in safely recursive fashion. */ | |
6485 | if (outer_running_asynch_code) | |
6486 | { | |
6487 | Lisp_Object tem; | |
89f2614d KS |
6488 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6489 | restore_search_regs (); | |
6490 | record_unwind_save_match_data (); | |
6491 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6492 | } |
6493 | ||
6494 | /* For speed, if a search happens within this code, | |
6495 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6496 | running_asynch_code = 1; |
4da2f5be | 6497 | |
3b9a3dfa RS |
6498 | internal_condition_case_1 (read_process_output_call, |
6499 | Fcons (sentinel, | |
6500 | Fcons (proc, Fcons (reason, Qnil))), | |
6501 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6502 | exec_sentinel_error_handler); | |
4da2f5be RS |
6503 | |
6504 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6505 | restore_search_regs (); |
4da2f5be | 6506 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6507 | |
6508 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6509 | |
6510 | /* Restore waiting_for_user_input_p as it was | |
6511 | when we were called, in case the filter clobbered it. */ | |
6512 | waiting_for_user_input_p = waiting; | |
6513 | ||
7973cfa8 | 6514 | #if 0 |
dfc21838 RS |
6515 | if (! EQ (Fcurrent_buffer (), obuffer) |
6516 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6517 | #endif |
927e08be RS |
6518 | /* But do it only if the caller is actually going to read events. |
6519 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6520 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6521 | if (waiting_for_user_input_p == -1) |
6522 | record_asynch_buffer_change (); | |
8fb3cf64 | 6523 | |
2ea6d561 | 6524 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6525 | } |
6526 | ||
6527 | /* Report all recent events of a change in process status | |
6528 | (either run the sentinel or output a message). | |
b50fe468 RS |
6529 | This is usually done while Emacs is waiting for keyboard input |
6530 | but can be done at other times. */ | |
d0d6b7c5 | 6531 | |
ff6daed3 | 6532 | static void |
d3da34e0 | 6533 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6534 | { |
6535 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6536 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6537 | struct gcpro gcpro1, gcpro2; |
6538 | ||
2e4149a8 KH |
6539 | tail = Qnil; |
6540 | msg = Qnil; | |
d0d6b7c5 JB |
6541 | /* We need to gcpro tail; if read_process_output calls a filter |
6542 | which deletes a process and removes the cons to which tail points | |
6543 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6544 | reference. */ | |
6545 | GCPRO2 (tail, msg); | |
6546 | ||
30623085 RS |
6547 | /* Set this now, so that if new processes are created by sentinels |
6548 | that we run, we get called again to handle their status changes. */ | |
6549 | update_tick = process_tick; | |
6550 | ||
99784d63 | 6551 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6552 | { |
30623085 RS |
6553 | Lisp_Object symbol; |
6554 | register struct Lisp_Process *p; | |
6555 | ||
99784d63 | 6556 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6557 | p = XPROCESS (proc); |
6558 | ||
60f0fb11 | 6559 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6560 | { |
60f0fb11 | 6561 | p->update_tick = p->tick; |
d0d6b7c5 | 6562 | |
30623085 | 6563 | /* If process is still active, read any output that remains. */ |
4d2b044c DA |
6564 | while (! EQ (p->filter, Qt) |
6565 | && ! EQ (p->status, Qconnect) | |
6566 | && ! EQ (p->status, Qlisten) | |
d888760c | 6567 | /* Network or serial process not stopped: */ |
4d2b044c | 6568 | && ! EQ (p->command, Qt) |
60f0fb11 | 6569 | && p->infd >= 0 |
ff6daed3 | 6570 | && p != deleting_process |
60f0fb11 | 6571 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6572 | |
4d2b044c | 6573 | buffer = p->buffer; |
d0d6b7c5 | 6574 | |
30623085 | 6575 | /* Get the text to use for the message. */ |
6bfd98e7 | 6576 | if (p->raw_status_new) |
30623085 | 6577 | update_status (p); |
116c423c | 6578 | msg = status_message (p); |
d0d6b7c5 | 6579 | |
30623085 | 6580 | /* If process is terminated, deactivate it or delete it. */ |
4d2b044c DA |
6581 | symbol = p->status; |
6582 | if (CONSP (p->status)) | |
6583 | symbol = XCAR (p->status); | |
d0d6b7c5 | 6584 | |
30623085 RS |
6585 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6586 | || EQ (symbol, Qclosed)) | |
6587 | { | |
6588 | if (delete_exited_processes) | |
6589 | remove_process (proc); | |
6590 | else | |
6591 | deactivate_process (proc); | |
6592 | } | |
d0d6b7c5 | 6593 | |
0ad61fe7 RS |
6594 | /* The actions above may have further incremented p->tick. |
6595 | So set p->update_tick again | |
6596 | so that an error in the sentinel will not cause | |
6597 | this code to be run again. */ | |
60f0fb11 | 6598 | p->update_tick = p->tick; |
30623085 | 6599 | /* Now output the message suitably. */ |
4d2b044c | 6600 | if (!NILP (p->sentinel)) |
30623085 RS |
6601 | exec_sentinel (proc, msg); |
6602 | /* Don't bother with a message in the buffer | |
6603 | when a process becomes runnable. */ | |
6604 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6605 | { | |
01f5787b | 6606 | Lisp_Object tem; |
30623085 | 6607 | struct buffer *old = current_buffer; |
d311d28c PE |
6608 | ptrdiff_t opoint, opoint_byte; |
6609 | ptrdiff_t before, before_byte; | |
2e4149a8 | 6610 | |
30623085 RS |
6611 | /* Avoid error if buffer is deleted |
6612 | (probably that's why the process is dead, too) */ | |
e578f381 | 6613 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
30623085 RS |
6614 | continue; |
6615 | Fset_buffer (buffer); | |
12ca5cdf | 6616 | |
6ec8bbd2 | 6617 | opoint = PT; |
d8a2934e | 6618 | opoint_byte = PT_BYTE; |
30623085 RS |
6619 | /* Insert new output into buffer |
6620 | at the current end-of-output marker, | |
6621 | thus preserving logical ordering of input and output. */ | |
4d2b044c DA |
6622 | if (XMARKER (p->mark)->buffer) |
6623 | Fgoto_char (p->mark); | |
30623085 | 6624 | else |
d8a2934e | 6625 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6626 | |
6627 | before = PT; | |
d8a2934e | 6628 | before_byte = PT_BYTE; |
30623085 | 6629 | |
4b4deea2 | 6630 | tem = BVAR (current_buffer, read_only); |
39eb03f1 | 6631 | bset_read_only (current_buffer, Qnil); |
30623085 | 6632 | insert_string ("\nProcess "); |
21238f11 | 6633 | { /* FIXME: temporary kludge */ |
4d2b044c | 6634 | Lisp_Object tem2 = p->name; Finsert (1, &tem2); } |
30623085 RS |
6635 | insert_string (" "); |
6636 | Finsert (1, &msg); | |
39eb03f1 | 6637 | bset_read_only (current_buffer, tem); |
4d2b044c | 6638 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6639 | |
12ca5cdf | 6640 | if (opoint >= before) |
d8a2934e RS |
6641 | SET_PT_BOTH (opoint + (PT - before), |
6642 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6643 | else |
d8a2934e | 6644 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6645 | |
30623085 | 6646 | set_buffer_internal (old); |
d0d6b7c5 | 6647 | } |
30623085 RS |
6648 | } |
6649 | } /* end for */ | |
d0d6b7c5 JB |
6650 | |
6651 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6652 | UNGCPRO; |
6653 | } | |
0fa1789e KH |
6654 | |
6655 | \f | |
6656 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6657 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6658 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6659 | DECODING will be used to decode subprocess output and ENCODING to | |
6660 | encode subprocess input. */) | |
5842a27b | 6661 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6662 | { |
6663 | register struct Lisp_Process *p; | |
6664 | ||
f3d9532b JB |
6665 | CHECK_PROCESS (process); |
6666 | p = XPROCESS (process); | |
60f0fb11 | 6667 | if (p->infd < 0) |
4d2b044c | 6668 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6669 | if (p->outfd < 0) |
4d2b044c | 6670 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6671 | Fcheck_coding_system (decoding); |
6672 | Fcheck_coding_system (encoding); | |
76d812bb | 6673 | encoding = coding_inherit_eol_type (encoding, Qnil); |
6a09a33b PE |
6674 | pset_decode_coding_system (p, decoding); |
6675 | pset_encode_coding_system (p, encoding); | |
f3d9532b | 6676 | setup_process_coding_systems (process); |
0fa1789e KH |
6677 | |
6678 | return Qnil; | |
6679 | } | |
6680 | ||
6681 | DEFUN ("process-coding-system", | |
6682 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6683 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6684 | (register Lisp_Object process) |
0fa1789e | 6685 | { |
f3d9532b | 6686 | CHECK_PROCESS (process); |
4d2b044c DA |
6687 | return Fcons (XPROCESS (process)->decode_coding_system, |
6688 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6689 | } |
03f04413 KH |
6690 | |
6691 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6692 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6693 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6694 | If FLAG is non-nil, the filter is given multibyte strings. | |
6695 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6696 | all character code conversion except for end-of-line conversion is |
6697 | suppressed. */) | |
5842a27b | 6698 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6699 | { |
6700 | register struct Lisp_Process *p; | |
6701 | ||
f3d9532b JB |
6702 | CHECK_PROCESS (process); |
6703 | p = XPROCESS (process); | |
5431bd6a | 6704 | if (NILP (flag)) |
6a09a33b PE |
6705 | pset_decode_coding_system |
6706 | (p, raw_text_coding_system (p->decode_coding_system)); | |
f3d9532b | 6707 | setup_process_coding_systems (process); |
03f04413 KH |
6708 | |
6709 | return Qnil; | |
6710 | } | |
6711 | ||
6712 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6713 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6714 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6715 | (Lisp_Object process) |
03f04413 KH |
6716 | { |
6717 | register struct Lisp_Process *p; | |
5431bd6a | 6718 | struct coding_system *coding; |
03f04413 | 6719 | |
f3d9532b JB |
6720 | CHECK_PROCESS (process); |
6721 | p = XPROCESS (process); | |
5431bd6a SM |
6722 | coding = proc_decode_coding_system[p->infd]; |
6723 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6724 | } |
6725 | ||
6726 | ||
d0d6b7c5 | 6727 | \f |
cb768704 | 6728 | |
4475bec4 PE |
6729 | # ifdef HAVE_GPM |
6730 | ||
994d9841 | 6731 | void |
d3da34e0 | 6732 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6733 | { |
3fad2ad2 | 6734 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6735 | } |
6736 | ||
994d9841 | 6737 | void |
d3da34e0 | 6738 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6739 | { |
3fad2ad2 | 6740 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6741 | } |
6742 | ||
4475bec4 PE |
6743 | # endif |
6744 | ||
4a4bbad2 | 6745 | # ifdef USABLE_SIGIO |
006c5daa | 6746 | |
a69281ff RS |
6747 | /* Return nonzero if *MASK has a bit set |
6748 | that corresponds to one of the keyboard input descriptors. */ | |
6749 | ||
ff6daed3 | 6750 | static int |
d3da34e0 | 6751 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6752 | { |
6753 | int fd; | |
6754 | ||
3fad2ad2 | 6755 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6756 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6757 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6758 | return 1; | |
6759 | ||
6760 | return 0; | |
6761 | } | |
006c5daa | 6762 | # endif |
934e2a68 | 6763 | |
f388c88a | 6764 | #else /* not subprocesses */ |
934e2a68 | 6765 | |
f388c88a EZ |
6766 | /* Defined on msdos.c. */ |
6767 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
0d23c240 | 6768 | EMACS_TIME *, void *); |
934e2a68 | 6769 | |
f388c88a EZ |
6770 | /* Implementation of wait_reading_process_output, assuming that there |
6771 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6772 | |
f388c88a | 6773 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6774 | |
d188e26b | 6775 | TIME_LIMIT is: |
d35af63c PE |
6776 | timeout in seconds |
6777 | If negative, gobble data immediately available but don't wait for any. | |
6778 | ||
d188e26b | 6779 | NSECS is: |
d35af63c PE |
6780 | an additional duration to wait, measured in nanoseconds |
6781 | If TIME_LIMIT is zero, then: | |
d188e26b PE |
6782 | If NSECS == 0, there is no limit. |
6783 | If NSECS > 0, the timeout consists of NSECS only. | |
d35af63c | 6784 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
934e2a68 | 6785 | |
a0bee46f | 6786 | READ_KBD is: |
f388c88a EZ |
6787 | 0 to ignore keyboard input, or |
6788 | 1 to return when input is available, or | |
6789 | -1 means caller will actually read the input, so don't throw to | |
6790 | the quit handler. | |
934e2a68 | 6791 | |
f388c88a EZ |
6792 | see full version for other parameters. We know that wait_proc will |
6793 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6794 | |
9fa1de30 | 6795 | DO_DISPLAY means redisplay should be done to show subprocess |
f388c88a | 6796 | output that arrives. |
934e2a68 | 6797 | |
f388c88a EZ |
6798 | Return true if we received input from any process. */ |
6799 | ||
6800 | int | |
d35af63c | 6801 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
9fa1de30 | 6802 | bool do_display, |
1408902e EZ |
6803 | Lisp_Object wait_for_cell, |
6804 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6805 | { |
f388c88a EZ |
6806 | register int nfds; |
6807 | EMACS_TIME end_time, timeout; | |
d0d6b7c5 | 6808 | |
d35af63c PE |
6809 | if (time_limit < 0) |
6810 | { | |
6811 | time_limit = 0; | |
6812 | nsecs = -1; | |
6813 | } | |
6814 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
6815 | time_limit = TYPE_MAXIMUM (time_t); | |
6816 | ||
f388c88a | 6817 | /* What does time_limit really mean? */ |
216ee680 | 6818 | if (time_limit || 0 < nsecs) |
f388c88a | 6819 | { |
e9a9ae03 PE |
6820 | timeout = make_emacs_time (time_limit, nsecs); |
6821 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
f388c88a | 6822 | } |
84af9896 | 6823 | |
f388c88a EZ |
6824 | /* Turn off periodic alarms (in case they are in use) |
6825 | and then turn off any other atimers, | |
6826 | because the select emulator uses alarms. */ | |
6827 | stop_polling (); | |
6828 | turn_on_atimers (0); | |
d0d6b7c5 | 6829 | |
f388c88a EZ |
6830 | while (1) |
6831 | { | |
6832 | int timeout_reduced_for_timers = 0; | |
a0bee46f PE |
6833 | SELECT_TYPE waitchannels; |
6834 | int xerrno; | |
dd2281ae | 6835 | |
f388c88a EZ |
6836 | /* If calling from keyboard input, do not quit |
6837 | since we want to return C-g as an input character. | |
6838 | Otherwise, do pending quit if requested. */ | |
6839 | if (read_kbd >= 0) | |
6840 | QUIT; | |
bad49fc7 | 6841 | |
f388c88a EZ |
6842 | /* Exit now if the cell we're waiting for became non-nil. */ |
6843 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6844 | break; | |
0a65b032 | 6845 | |
bae8d137 RS |
6846 | /* Compute time from now till when time limit is up */ |
6847 | /* Exit if already run out */ | |
d35af63c | 6848 | if (nsecs < 0) |
52fd88d3 | 6849 | { |
216ee680 | 6850 | /* A negative timeout means |
52fd88d3 EZ |
6851 | gobble output available now |
6852 | but don't wait at all. */ | |
6853 | ||
e9a9ae03 | 6854 | timeout = make_emacs_time (0, 0); |
52fd88d3 | 6855 | } |
216ee680 | 6856 | else if (time_limit || 0 < nsecs) |
6720a7fb | 6857 | { |
e9a9ae03 PE |
6858 | EMACS_TIME now = current_emacs_time (); |
6859 | if (EMACS_TIME_LE (end_time, now)) | |
6720a7fb | 6860 | break; |
e9a9ae03 | 6861 | timeout = sub_emacs_time (end_time, now); |
6720a7fb | 6862 | } |
52fd88d3 EZ |
6863 | else |
6864 | { | |
e9a9ae03 | 6865 | timeout = make_emacs_time (100000, 0); |
52fd88d3 | 6866 | } |
6720a7fb | 6867 | |
bae8d137 RS |
6868 | /* If our caller will not immediately handle keyboard events, |
6869 | run timer events directly. | |
6870 | (Callers that will immediately read keyboard events | |
6871 | call timer_delay on their own.) */ | |
f3fbd155 | 6872 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6873 | { |
6874 | EMACS_TIME timer_delay; | |
0a65b032 | 6875 | |
9baacf76 | 6876 | do |
0a65b032 | 6877 | { |
9fa1de30 | 6878 | unsigned old_timers_run = timers_run; |
f868cd8a | 6879 | timer_delay = timer_check (); |
9baacf76 GM |
6880 | if (timers_run != old_timers_run && do_display) |
6881 | /* We must retry, since a timer may have requeued itself | |
6882 | and that could alter the time delay. */ | |
3007ebfb | 6883 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6884 | else |
6885 | break; | |
0a65b032 | 6886 | } |
9baacf76 | 6887 | while (!detect_input_pending ()); |
0a65b032 | 6888 | |
52fd88d3 | 6889 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6890 | if (read_kbd != 0 |
52fd88d3 EZ |
6891 | && requeued_events_pending_p ()) |
6892 | break; | |
6893 | ||
d35af63c | 6894 | if (EMACS_TIME_VALID_P (timer_delay) && 0 <= nsecs) |
bae8d137 | 6895 | { |
d35af63c | 6896 | if (EMACS_TIME_LT (timer_delay, timeout)) |
bae8d137 | 6897 | { |
f694e5d2 | 6898 | timeout = timer_delay; |
bae8d137 RS |
6899 | timeout_reduced_for_timers = 1; |
6900 | } | |
6901 | } | |
6902 | } | |
6903 | ||
6720a7fb JB |
6904 | /* Cause C-g and alarm signals to take immediate action, |
6905 | and cause input available signals to zero out timeout. */ | |
b89a415a | 6906 | if (read_kbd < 0) |
6720a7fb JB |
6907 | set_waiting_for_input (&timeout); |
6908 | ||
ff11dfa1 | 6909 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6910 | reprocess its display stuff. */ |
5164ee8e | 6911 | if (frame_garbaged && do_display) |
0a65b032 RS |
6912 | { |
6913 | clear_waiting_for_input (); | |
3007ebfb | 6914 | redisplay_preserve_echo_area (15); |
b89a415a | 6915 | if (read_kbd < 0) |
0a65b032 RS |
6916 | set_waiting_for_input (&timeout); |
6917 | } | |
6720a7fb | 6918 | |
a0bee46f PE |
6919 | /* Wait till there is something to do. */ |
6920 | FD_ZERO (&waitchannels); | |
b89a415a | 6921 | if (read_kbd && detect_input_pending ()) |
a0bee46f PE |
6922 | nfds = 0; |
6923 | else | |
1861b214 | 6924 | { |
a0bee46f PE |
6925 | if (read_kbd || !NILP (wait_for_cell)) |
6926 | FD_SET (0, &waitchannels); | |
6927 | nfds = pselect (1, &waitchannels, NULL, NULL, &timeout, NULL); | |
1861b214 | 6928 | } |
f694e5d2 KH |
6929 | |
6930 | xerrno = errno; | |
6720a7fb JB |
6931 | |
6932 | /* Make C-g and alarm signals set flags again */ | |
6933 | clear_waiting_for_input (); | |
6934 | ||
6935 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 6936 | do_pending_window_change (0); |
6720a7fb | 6937 | |
d35af63c | 6938 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
f694e5d2 KH |
6939 | /* We waited the full specified time, so return now. */ |
6940 | break; | |
6941 | ||
6720a7fb JB |
6942 | if (nfds == -1) |
6943 | { | |
6944 | /* If the system call was interrupted, then go around the | |
6945 | loop again. */ | |
f694e5d2 | 6946 | if (xerrno == EINTR) |
8db121c4 | 6947 | FD_ZERO (&waitchannels); |
f694e5d2 | 6948 | else |
68c45bf0 | 6949 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 6950 | } |
6720a7fb | 6951 | |
f694e5d2 KH |
6952 | /* Check for keyboard input */ |
6953 | ||
b89a415a | 6954 | if (read_kbd |
78c1afb6 | 6955 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 6956 | { |
78c1afb6 | 6957 | swallow_events (do_display); |
f694e5d2 | 6958 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 6959 | break; |
78c1afb6 EZ |
6960 | } |
6961 | ||
52fd88d3 | 6962 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6963 | if (read_kbd |
52fd88d3 EZ |
6964 | && requeued_events_pending_p ()) |
6965 | break; | |
6966 | ||
f854a00b RS |
6967 | /* If wait_for_cell. check for keyboard input |
6968 | but don't run any timers. | |
6969 | ??? (It seems wrong to me to check for keyboard | |
6970 | input at all when wait_for_cell, but the code | |
6971 | has been this way since July 1994. | |
6972 | Try changing this after version 19.31.) */ | |
f3fbd155 | 6973 | if (! NILP (wait_for_cell) |
f854a00b RS |
6974 | && detect_input_pending ()) |
6975 | { | |
6976 | swallow_events (do_display); | |
6977 | if (detect_input_pending ()) | |
6978 | break; | |
6979 | } | |
6980 | ||
0a65b032 | 6981 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6982 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 6983 | break; |
6720a7fb JB |
6984 | } |
6985 | ||
a87b802f JB |
6986 | start_polling (); |
6987 | ||
6720a7fb JB |
6988 | return 0; |
6989 | } | |
6990 | ||
f388c88a EZ |
6991 | #endif /* not subprocesses */ |
6992 | ||
6993 | /* The following functions are needed even if async subprocesses are | |
6994 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 6995 | |
01faa934 DN |
6996 | /* Add DESC to the set of keyboard input descriptors. */ |
6997 | ||
6998 | void | |
6999 | add_keyboard_wait_descriptor (int desc) | |
7000 | { | |
bf05eed6 | 7001 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
7002 | FD_SET (desc, &input_wait_mask); |
7003 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
7004 | if (desc > max_input_desc) |
7005 | max_input_desc = desc; | |
bf05eed6 | 7006 | #endif |
01faa934 DN |
7007 | } |
7008 | ||
7009 | /* From now on, do not expect DESC to give keyboard input. */ | |
7010 | ||
7011 | void | |
7012 | delete_keyboard_wait_descriptor (int desc) | |
7013 | { | |
bf05eed6 | 7014 | #ifdef subprocesses |
01faa934 | 7015 | int fd; |
3fad2ad2 | 7016 | int lim = max_input_desc; |
01faa934 DN |
7017 | |
7018 | FD_CLR (desc, &input_wait_mask); | |
7019 | FD_CLR (desc, &non_process_wait_mask); | |
7020 | ||
3fad2ad2 | 7021 | if (desc == max_input_desc) |
01faa934 | 7022 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
7023 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
7024 | max_input_desc = fd; | |
bf05eed6 | 7025 | #endif |
01faa934 DN |
7026 | } |
7027 | ||
fc549af9 EZ |
7028 | /* Setup coding systems of PROCESS. */ |
7029 | ||
7030 | void | |
7031 | setup_process_coding_systems (Lisp_Object process) | |
7032 | { | |
7033 | #ifdef subprocesses | |
7034 | struct Lisp_Process *p = XPROCESS (process); | |
7035 | int inch = p->infd; | |
7036 | int outch = p->outfd; | |
7037 | Lisp_Object coding_system; | |
7038 | ||
7039 | if (inch < 0 || outch < 0) | |
7040 | return; | |
7041 | ||
7042 | if (!proc_decode_coding_system[inch]) | |
38182d90 | 7043 | proc_decode_coding_system[inch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c DA |
7044 | coding_system = p->decode_coding_system; |
7045 | if (! NILP (p->filter)) | |
fc549af9 | 7046 | ; |
4d2b044c | 7047 | else if (BUFFERP (p->buffer)) |
fc549af9 | 7048 | { |
4d2b044c | 7049 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
7050 | coding_system = raw_text_coding_system (coding_system); |
7051 | } | |
7052 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7053 | ||
7054 | if (!proc_encode_coding_system[outch]) | |
38182d90 | 7055 | proc_encode_coding_system[outch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c | 7056 | setup_coding_system (p->encode_coding_system, |
fc549af9 EZ |
7057 | proc_encode_coding_system[outch]); |
7058 | #endif | |
7059 | } | |
7060 | ||
7061 | /* Close all descriptors currently in use for communication | |
7062 | with subprocess. This is used in a newly-forked subprocess | |
7063 | to get rid of irrelevant descriptors. */ | |
7064 | ||
7065 | void | |
7066 | close_process_descs (void) | |
7067 | { | |
7068 | #ifndef DOS_NT | |
7069 | int i; | |
7070 | for (i = 0; i < MAXDESC; i++) | |
7071 | { | |
7072 | Lisp_Object process; | |
7073 | process = chan_process[i]; | |
7074 | if (!NILP (process)) | |
7075 | { | |
7076 | int in = XPROCESS (process)->infd; | |
7077 | int out = XPROCESS (process)->outfd; | |
7078 | if (in >= 0) | |
7079 | emacs_close (in); | |
7080 | if (out >= 0 && in != out) | |
7081 | emacs_close (out); | |
7082 | } | |
7083 | } | |
7084 | #endif | |
7085 | } | |
7086 | ||
6720a7fb | 7087 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7088 | doc: /* Return the (or a) process associated with BUFFER. |
7089 | BUFFER may be a buffer or the name of one. */) | |
7090 | (register Lisp_Object buffer) | |
6720a7fb | 7091 | { |
f388c88a EZ |
7092 | #ifdef subprocesses |
7093 | register Lisp_Object buf, tail, proc; | |
7094 | ||
7095 | if (NILP (buffer)) return Qnil; | |
7096 | buf = Fget_buffer (buffer); | |
7097 | if (NILP (buf)) return Qnil; | |
7098 | ||
7099 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7100 | { | |
7101 | proc = Fcdr (XCAR (tail)); | |
4d2b044c | 7102 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
f388c88a EZ |
7103 | return proc; |
7104 | } | |
7105 | #endif /* subprocesses */ | |
6720a7fb JB |
7106 | return Qnil; |
7107 | } | |
7108 | ||
52a1b894 | 7109 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7110 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7111 | 1, 1, 0, | |
f388c88a EZ |
7112 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7113 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7114 | associated with PROCESS will inherit the coding system used to decode | |
7115 | the process output. */) | |
5842a27b | 7116 | (register Lisp_Object process) |
52a1b894 | 7117 | { |
f388c88a EZ |
7118 | #ifdef subprocesses |
7119 | CHECK_PROCESS (process); | |
7120 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7121 | #else | |
52a1b894 EZ |
7122 | /* Ignore the argument and return the value of |
7123 | inherit-process-coding-system. */ | |
7124 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7125 | #endif |
52a1b894 EZ |
7126 | } |
7127 | ||
6720a7fb | 7128 | /* Kill all processes associated with `buffer'. |
f388c88a | 7129 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7130 | |
d9bb0c32 | 7131 | void |
f388c88a | 7132 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7133 | { |
f388c88a EZ |
7134 | #ifdef subprocesses |
7135 | Lisp_Object tail, proc; | |
7136 | ||
7137 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7138 | { | |
7139 | proc = XCDR (XCAR (tail)); | |
7140 | if (PROCESSP (proc) | |
4d2b044c | 7141 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
f388c88a EZ |
7142 | { |
7143 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7144 | Fdelete_process (proc); | |
7145 | else if (XPROCESS (proc)->infd >= 0) | |
7146 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7147 | } | |
7148 | } | |
7149 | #else /* subprocesses */ | |
7150 | /* Since we have no subprocesses, this does nothing. */ | |
7151 | #endif /* subprocesses */ | |
6720a7fb JB |
7152 | } |
7153 | ||
a7ca3326 | 7154 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, |
16a97296 | 7155 | Swaiting_for_user_input_p, 0, 0, 0, |
77defa9a EZ |
7156 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
7157 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7158 | (void) | |
7159 | { | |
7160 | #ifdef subprocesses | |
7161 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7162 | #else | |
7163 | return Qnil; | |
7164 | #endif | |
7165 | } | |
7166 | ||
d568829b EZ |
7167 | /* Stop reading input from keyboard sources. */ |
7168 | ||
7169 | void | |
7170 | hold_keyboard_input (void) | |
7171 | { | |
7172 | kbd_is_on_hold = 1; | |
7173 | } | |
7174 | ||
7175 | /* Resume reading input from keyboard sources. */ | |
7176 | ||
7177 | void | |
7178 | unhold_keyboard_input (void) | |
7179 | { | |
7180 | kbd_is_on_hold = 0; | |
7181 | } | |
7182 | ||
7183 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7184 | ||
7185 | int | |
7186 | kbd_on_hold_p (void) | |
7187 | { | |
7188 | return kbd_is_on_hold; | |
7189 | } | |
7190 | ||
f388c88a EZ |
7191 | \f |
7192 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7193 | ||
934e2a68 EZ |
7194 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7195 | 0, 0, 0, | |
7196 | doc: /* Return a list of numerical process IDs of all running processes. | |
7197 | If this functionality is unsupported, return nil. | |
7198 | ||
f388c88a EZ |
7199 | See `process-attributes' for getting attributes of a process given its ID. */) |
7200 | (void) | |
7201 | { | |
7202 | return list_system_processes (); | |
7203 | } | |
7204 | ||
7205 | DEFUN ("process-attributes", Fprocess_attributes, | |
7206 | Sprocess_attributes, 1, 1, 0, | |
7207 | doc: /* Return attributes of the process given by its PID, a number. | |
7208 | ||
7209 | Value is an alist where each element is a cons cell of the form | |
7210 | ||
7211 | \(KEY . VALUE) | |
7212 | ||
7213 | If this functionality is unsupported, the value is nil. | |
7214 | ||
7215 | See `list-system-processes' for getting a list of all process IDs. | |
7216 | ||
7217 | The KEYs of the attributes that this function may return are listed | |
7218 | below, together with the type of the associated VALUE (in parentheses). | |
7219 | Not all platforms support all of these attributes; unsupported | |
7220 | attributes will not appear in the returned alist. | |
7221 | Unless explicitly indicated otherwise, numbers can have either | |
7222 | integer or floating point values. | |
7223 | ||
7224 | euid -- Effective user User ID of the process (number) | |
7225 | user -- User name corresponding to euid (string) | |
7226 | egid -- Effective user Group ID of the process (number) | |
7227 | group -- Group name corresponding to egid (string) | |
7228 | comm -- Command name (executable name only) (string) | |
7229 | state -- Process state code, such as "S", "R", or "T" (string) | |
7230 | ppid -- Parent process ID (number) | |
7231 | pgrp -- Process group ID (number) | |
7232 | sess -- Session ID, i.e. process ID of session leader (number) | |
7233 | ttname -- Controlling tty name (string) | |
7234 | tpgid -- ID of foreground process group on the process's tty (number) | |
7235 | minflt -- number of minor page faults (number) | |
7236 | majflt -- number of major page faults (number) | |
7237 | cminflt -- cumulative number of minor page faults (number) | |
7238 | cmajflt -- cumulative number of major page faults (number) | |
d35af63c PE |
7239 | utime -- user time used by the process, in (current-time) format, |
7240 | which is a list of integers (HIGH LOW USEC PSEC) | |
7241 | stime -- system time used by the process (current-time) | |
7242 | time -- sum of utime and stime (current-time) | |
7243 | cutime -- user time used by the process and its children (current-time) | |
7244 | cstime -- system time used by the process and its children (current-time) | |
7245 | ctime -- sum of cutime and cstime (current-time) | |
f388c88a EZ |
7246 | pri -- priority of the process (number) |
7247 | nice -- nice value of the process (number) | |
7248 | thcount -- process thread count (number) | |
d35af63c | 7249 | start -- time the process started (current-time) |
f388c88a EZ |
7250 | vsize -- virtual memory size of the process in KB's (number) |
7251 | rss -- resident set size of the process in KB's (number) | |
d35af63c | 7252 | etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format |
f388c88a EZ |
7253 | pcpu -- percents of CPU time used by the process (floating-point number) |
7254 | pmem -- percents of total physical memory used by process's resident set | |
7255 | (floating-point number) | |
7256 | args -- command line which invoked the process (string). */) | |
7257 | ( Lisp_Object pid) | |
7258 | { | |
7259 | return system_process_attributes (pid); | |
7260 | } | |
7261 | ||
7262 | \f | |
b82da769 GM |
7263 | /* This is not called "init_process" because that is the name of a |
7264 | Mach system call, so it would cause problems on Darwin systems. */ | |
f388c88a | 7265 | void |
b82da769 | 7266 | init_process_emacs (void) |
f388c88a EZ |
7267 | { |
7268 | #ifdef subprocesses | |
7269 | register int i; | |
7270 | ||
7271 | inhibit_sentinels = 0; | |
7272 | ||
7273 | #ifdef SIGCHLD | |
7274 | #ifndef CANNOT_DUMP | |
7275 | if (! noninteractive || initialized) | |
7276 | #endif | |
2fe28299 PE |
7277 | { |
7278 | struct sigaction action; | |
7279 | emacs_sigaction_init (&action, deliver_child_signal); | |
7280 | sigaction (SIGCHLD, &action, 0); | |
7281 | } | |
f388c88a EZ |
7282 | #endif |
7283 | ||
7284 | FD_ZERO (&input_wait_mask); | |
7285 | FD_ZERO (&non_keyboard_wait_mask); | |
7286 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7287 | FD_ZERO (&write_mask); |
f388c88a | 7288 | max_process_desc = 0; |
3fad2ad2 | 7289 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7290 | |
7291 | #ifdef NON_BLOCKING_CONNECT | |
7292 | FD_ZERO (&connect_wait_mask); | |
7293 | num_pending_connects = 0; | |
7294 | #endif | |
7295 | ||
7296 | #ifdef ADAPTIVE_READ_BUFFERING | |
7297 | process_output_delay_count = 0; | |
7298 | process_output_skip = 0; | |
7299 | #endif | |
7300 | ||
7301 | /* Don't do this, it caused infinite select loops. The display | |
7302 | method should call add_keyboard_wait_descriptor on stdin if it | |
7303 | needs that. */ | |
7304 | #if 0 | |
7305 | FD_SET (0, &input_wait_mask); | |
7306 | #endif | |
7307 | ||
7308 | Vprocess_alist = Qnil; | |
7309 | #ifdef SIGCHLD | |
7310 | deleted_pid_list = Qnil; | |
7311 | #endif | |
7312 | for (i = 0; i < MAXDESC; i++) | |
7313 | { | |
7314 | chan_process[i] = Qnil; | |
7315 | proc_buffered_char[i] = -1; | |
7316 | } | |
7317 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7318 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7319 | #ifdef DATAGRAM_SOCKETS | |
7320 | memset (datagram_address, 0, sizeof datagram_address); | |
7321 | #endif | |
7322 | ||
f388c88a EZ |
7323 | { |
7324 | Lisp_Object subfeatures = Qnil; | |
7325 | const struct socket_options *sopt; | |
7326 | ||
7327 | #define ADD_SUBFEATURE(key, val) \ | |
7328 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7329 | ||
7330 | #ifdef NON_BLOCKING_CONNECT | |
7331 | ADD_SUBFEATURE (QCnowait, Qt); | |
7332 | #endif | |
7333 | #ifdef DATAGRAM_SOCKETS | |
7334 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7335 | #endif | |
7336 | #ifdef HAVE_SEQPACKET | |
7337 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7338 | #endif | |
7339 | #ifdef HAVE_LOCAL_SOCKETS | |
7340 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7341 | #endif | |
7342 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7343 | #ifdef AF_INET6 | |
7344 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7345 | #endif | |
7346 | #ifdef HAVE_GETSOCKNAME | |
7347 | ADD_SUBFEATURE (QCservice, Qt); | |
7348 | #endif | |
5e617bc2 | 7349 | #if defined (O_NONBLOCK) || defined (O_NDELAY) |
f388c88a EZ |
7350 | ADD_SUBFEATURE (QCserver, Qt); |
7351 | #endif | |
7352 | ||
7353 | for (sopt = socket_options; sopt->name; sopt++) | |
7354 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7355 | ||
7356 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7357 | } | |
f388c88a EZ |
7358 | |
7359 | #if defined (DARWIN_OS) | |
7360 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7361 | processes. As such, we only change the default value. */ | |
7362 | if (initialized) | |
7363 | { | |
f44bd759 PE |
7364 | char const *release = (STRINGP (Voperating_system_release) |
7365 | ? SSDATA (Voperating_system_release) | |
7366 | : 0); | |
6de0e799 | 7367 | if (!release || !release[0] || (release[0] < '7' && release[1] == '.')) { |
f388c88a EZ |
7368 | Vprocess_connection_type = Qnil; |
7369 | } | |
7370 | } | |
7371 | #endif | |
7372 | #endif /* subprocesses */ | |
7373 | kbd_is_on_hold = 0; | |
7374 | } | |
7375 | ||
7376 | void | |
7377 | syms_of_process (void) | |
7378 | { | |
7379 | #ifdef subprocesses | |
7380 | ||
cd3520a4 JB |
7381 | DEFSYM (Qprocessp, "processp"); |
7382 | DEFSYM (Qrun, "run"); | |
7383 | DEFSYM (Qstop, "stop"); | |
7384 | DEFSYM (Qsignal, "signal"); | |
f388c88a EZ |
7385 | |
7386 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7387 | here again. | |
934e2a68 | 7388 | |
f388c88a EZ |
7389 | Qexit = intern_c_string ("exit"); |
7390 | staticpro (&Qexit); */ | |
934e2a68 | 7391 | |
cd3520a4 JB |
7392 | DEFSYM (Qopen, "open"); |
7393 | DEFSYM (Qclosed, "closed"); | |
7394 | DEFSYM (Qconnect, "connect"); | |
7395 | DEFSYM (Qfailed, "failed"); | |
7396 | DEFSYM (Qlisten, "listen"); | |
7397 | DEFSYM (Qlocal, "local"); | |
7398 | DEFSYM (Qipv4, "ipv4"); | |
f388c88a | 7399 | #ifdef AF_INET6 |
cd3520a4 JB |
7400 | DEFSYM (Qipv6, "ipv6"); |
7401 | #endif | |
7402 | DEFSYM (Qdatagram, "datagram"); | |
7403 | DEFSYM (Qseqpacket, "seqpacket"); | |
7404 | ||
7405 | DEFSYM (QCport, ":port"); | |
7406 | DEFSYM (QCspeed, ":speed"); | |
7407 | DEFSYM (QCprocess, ":process"); | |
7408 | ||
7409 | DEFSYM (QCbytesize, ":bytesize"); | |
7410 | DEFSYM (QCstopbits, ":stopbits"); | |
7411 | DEFSYM (QCparity, ":parity"); | |
7412 | DEFSYM (Qodd, "odd"); | |
7413 | DEFSYM (Qeven, "even"); | |
7414 | DEFSYM (QCflowcontrol, ":flowcontrol"); | |
7415 | DEFSYM (Qhw, "hw"); | |
7416 | DEFSYM (Qsw, "sw"); | |
7417 | DEFSYM (QCsummary, ":summary"); | |
7418 | ||
7419 | DEFSYM (Qreal, "real"); | |
7420 | DEFSYM (Qnetwork, "network"); | |
7421 | DEFSYM (Qserial, "serial"); | |
7422 | DEFSYM (QCbuffer, ":buffer"); | |
7423 | DEFSYM (QChost, ":host"); | |
7424 | DEFSYM (QCservice, ":service"); | |
7425 | DEFSYM (QClocal, ":local"); | |
7426 | DEFSYM (QCremote, ":remote"); | |
7427 | DEFSYM (QCcoding, ":coding"); | |
7428 | DEFSYM (QCserver, ":server"); | |
7429 | DEFSYM (QCnowait, ":nowait"); | |
7430 | DEFSYM (QCsentinel, ":sentinel"); | |
7431 | DEFSYM (QClog, ":log"); | |
7432 | DEFSYM (QCnoquery, ":noquery"); | |
7433 | DEFSYM (QCstop, ":stop"); | |
7434 | DEFSYM (QCoptions, ":options"); | |
7435 | DEFSYM (QCplist, ":plist"); | |
7436 | ||
7437 | DEFSYM (Qlast_nonmenu_event, "last-nonmenu-event"); | |
934e2a68 | 7438 | |
f388c88a EZ |
7439 | staticpro (&Vprocess_alist); |
7440 | #ifdef SIGCHLD | |
7441 | staticpro (&deleted_pid_list); | |
7442 | #endif | |
934e2a68 | 7443 | |
f388c88a | 7444 | #endif /* subprocesses */ |
6720a7fb | 7445 | |
cd3520a4 JB |
7446 | DEFSYM (QCname, ":name"); |
7447 | DEFSYM (QCtype, ":type"); | |
7448 | ||
7449 | DEFSYM (Qeuid, "euid"); | |
7450 | DEFSYM (Qegid, "egid"); | |
7451 | DEFSYM (Quser, "user"); | |
7452 | DEFSYM (Qgroup, "group"); | |
7453 | DEFSYM (Qcomm, "comm"); | |
7454 | DEFSYM (Qstate, "state"); | |
7455 | DEFSYM (Qppid, "ppid"); | |
7456 | DEFSYM (Qpgrp, "pgrp"); | |
7457 | DEFSYM (Qsess, "sess"); | |
7458 | DEFSYM (Qttname, "ttname"); | |
7459 | DEFSYM (Qtpgid, "tpgid"); | |
7460 | DEFSYM (Qminflt, "minflt"); | |
7461 | DEFSYM (Qmajflt, "majflt"); | |
7462 | DEFSYM (Qcminflt, "cminflt"); | |
7463 | DEFSYM (Qcmajflt, "cmajflt"); | |
7464 | DEFSYM (Qutime, "utime"); | |
7465 | DEFSYM (Qstime, "stime"); | |
7466 | DEFSYM (Qtime, "time"); | |
7467 | DEFSYM (Qcutime, "cutime"); | |
7468 | DEFSYM (Qcstime, "cstime"); | |
7469 | DEFSYM (Qctime, "ctime"); | |
7470 | DEFSYM (Qpri, "pri"); | |
7471 | DEFSYM (Qnice, "nice"); | |
7472 | DEFSYM (Qthcount, "thcount"); | |
7473 | DEFSYM (Qstart, "start"); | |
7474 | DEFSYM (Qvsize, "vsize"); | |
7475 | DEFSYM (Qrss, "rss"); | |
7476 | DEFSYM (Qetime, "etime"); | |
7477 | DEFSYM (Qpcpu, "pcpu"); | |
7478 | DEFSYM (Qpmem, "pmem"); | |
7479 | DEFSYM (Qargs, "args"); | |
9057ff80 | 7480 | |
29208e82 | 7481 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
fb7ada5f | 7482 | doc: /* Non-nil means delete processes immediately when they exit. |
f388c88a EZ |
7483 | A value of nil means don't delete them until `list-processes' is run. */); |
7484 | ||
7485 | delete_exited_processes = 1; | |
7486 | ||
462aa963 | 7487 | #ifdef subprocesses |
29208e82 | 7488 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7489 | doc: /* Control type of device used to communicate with subprocesses. |
7490 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7491 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7492 | then a pipe is used in any case. | |
7493 | The value takes effect when `start-process' is called. */); | |
7494 | Vprocess_connection_type = Qt; | |
7495 | ||
7496 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7497 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7498 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7499 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7500 | is read in very small blocks, potentially resulting in very poor performance. | |
7501 | This behavior can be remedied to some extent by setting this variable to a | |
7502 | non-nil value, as it will automatically delay reading from such processes, to | |
7503 | allow them to produce more output before Emacs tries to read it. | |
7504 | If the value is t, the delay is reset after each write to the process; any other | |
7505 | non-nil value means that the delay is not reset on write. | |
7506 | The variable takes effect when `start-process' is called. */); | |
7507 | Vprocess_adaptive_read_buffering = Qt; | |
7508 | #endif | |
7509 | ||
7510 | defsubr (&Sprocessp); | |
7511 | defsubr (&Sget_process); | |
7512 | defsubr (&Sdelete_process); | |
7513 | defsubr (&Sprocess_status); | |
7514 | defsubr (&Sprocess_exit_status); | |
7515 | defsubr (&Sprocess_id); | |
7516 | defsubr (&Sprocess_name); | |
7517 | defsubr (&Sprocess_tty_name); | |
7518 | defsubr (&Sprocess_command); | |
7519 | defsubr (&Sset_process_buffer); | |
7520 | defsubr (&Sprocess_buffer); | |
7521 | defsubr (&Sprocess_mark); | |
7522 | defsubr (&Sset_process_filter); | |
7523 | defsubr (&Sprocess_filter); | |
7524 | defsubr (&Sset_process_sentinel); | |
7525 | defsubr (&Sprocess_sentinel); | |
7526 | defsubr (&Sset_process_window_size); | |
7527 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7528 | defsubr (&Sset_process_query_on_exit_flag); | |
7529 | defsubr (&Sprocess_query_on_exit_flag); | |
7530 | defsubr (&Sprocess_contact); | |
7531 | defsubr (&Sprocess_plist); | |
7532 | defsubr (&Sset_process_plist); | |
f388c88a EZ |
7533 | defsubr (&Sprocess_list); |
7534 | defsubr (&Sstart_process); | |
f388c88a EZ |
7535 | defsubr (&Sserial_process_configure); |
7536 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7537 | defsubr (&Sset_network_process_option); |
7538 | defsubr (&Smake_network_process); | |
7539 | defsubr (&Sformat_network_address); | |
5e617bc2 | 7540 | #if defined (HAVE_NET_IF_H) |
f388c88a EZ |
7541 | #ifdef SIOCGIFCONF |
7542 | defsubr (&Snetwork_interface_list); | |
7543 | #endif | |
5e617bc2 | 7544 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
f388c88a EZ |
7545 | defsubr (&Snetwork_interface_info); |
7546 | #endif | |
5e617bc2 | 7547 | #endif /* defined (HAVE_NET_IF_H) */ |
f388c88a EZ |
7548 | #ifdef DATAGRAM_SOCKETS |
7549 | defsubr (&Sprocess_datagram_address); | |
7550 | defsubr (&Sset_process_datagram_address); | |
7551 | #endif | |
7552 | defsubr (&Saccept_process_output); | |
7553 | defsubr (&Sprocess_send_region); | |
7554 | defsubr (&Sprocess_send_string); | |
7555 | defsubr (&Sinterrupt_process); | |
7556 | defsubr (&Skill_process); | |
7557 | defsubr (&Squit_process); | |
7558 | defsubr (&Sstop_process); | |
7559 | defsubr (&Scontinue_process); | |
7560 | defsubr (&Sprocess_running_child_p); | |
7561 | defsubr (&Sprocess_send_eof); | |
7562 | defsubr (&Ssignal_process); | |
7563 | defsubr (&Swaiting_for_user_input_p); | |
7564 | defsubr (&Sprocess_type); | |
7565 | defsubr (&Sset_process_coding_system); | |
7566 | defsubr (&Sprocess_coding_system); | |
7567 | defsubr (&Sset_process_filter_multibyte); | |
7568 | defsubr (&Sprocess_filter_multibyte_p); | |
7569 | ||
7570 | #endif /* subprocesses */ | |
7571 | ||
6720a7fb | 7572 | defsubr (&Sget_buffer_process); |
52a1b894 | 7573 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7574 | defsubr (&Slist_system_processes); |
a20878b6 | 7575 | defsubr (&Sprocess_attributes); |
6720a7fb | 7576 | } |