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 | ||
20ef56db PE |
133 | #ifndef WNOHANG |
134 | # undef waitpid | |
135 | # define waitpid(pid, status, options) wait (status) | |
136 | #endif | |
137 | #ifndef WUNTRACED | |
138 | # define WUNTRACED 0 | |
139 | #endif | |
140 | ||
b8df54ff PE |
141 | /* Work around GCC 4.7.0 bug with strict overflow checking; see |
142 | <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>. | |
143 | These lines can be removed once the GCC bug is fixed. */ | |
144 | #if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__ | |
145 | # pragma GCC diagnostic ignored "-Wstrict-overflow" | |
146 | #endif | |
147 | ||
fdb183d6 DN |
148 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
149 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
150 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
151 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
152 | Lisp_Object QCname, QCtype; | |
153 | \f | |
154 | /* Non-zero if keyboard input is on hold, zero otherwise. */ | |
155 | ||
156 | static int kbd_is_on_hold; | |
157 | ||
fdb183d6 DN |
158 | /* Nonzero means don't run process sentinels. This is used |
159 | when exiting. */ | |
160 | int inhibit_sentinels; | |
161 | ||
f388c88a EZ |
162 | #ifdef subprocesses |
163 | ||
dd2281ae | 164 | Lisp_Object Qprocessp; |
955cbe7b PE |
165 | static Lisp_Object Qrun, Qstop, Qsignal; |
166 | static Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; | |
167 | Lisp_Object Qlocal; | |
168 | static Lisp_Object Qipv4, Qdatagram, Qseqpacket; | |
169 | static Lisp_Object Qreal, Qnetwork, Qserial; | |
e1652a86 | 170 | #ifdef AF_INET6 |
955cbe7b | 171 | static Lisp_Object Qipv6; |
e1652a86 | 172 | #endif |
955cbe7b PE |
173 | static Lisp_Object QCport, QCprocess; |
174 | Lisp_Object QCspeed; | |
d888760c GM |
175 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; |
176 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
955cbe7b PE |
177 | static Lisp_Object QCbuffer, QChost, QCservice; |
178 | static Lisp_Object QClocal, QCremote, QCcoding; | |
179 | static Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; | |
180 | static Lisp_Object QCsentinel, QClog, QCoptions, QCplist; | |
181 | static Lisp_Object Qlast_nonmenu_event; | |
e0f712ba | 182 | |
4d2b044c DA |
183 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
184 | #define NETCONN1_P(p) (EQ (p->type, Qnetwork)) | |
185 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
186 | #define SERIALCONN1_P(p) (EQ (p->type, Qserial)) | |
d0d6b7c5 | 187 | |
5f0929a7 RS |
188 | #ifndef HAVE_H_ERRNO |
189 | extern int h_errno; | |
190 | #endif | |
191 | ||
d0d6b7c5 | 192 | /* Number of events of change of status of a process. */ |
e4d81efc | 193 | static EMACS_INT process_tick; |
d0d6b7c5 | 194 | /* Number of events for which the user or sentinel has been notified. */ |
e4d81efc | 195 | static EMACS_INT update_tick; |
d0d6b7c5 | 196 | |
dd2a17ab KS |
197 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
198 | ||
82d6e50b | 199 | /* Only W32 has this, it really means that select can't take write mask. */ |
dd2a17ab KS |
200 | #ifdef BROKEN_NON_BLOCKING_CONNECT |
201 | #undef NON_BLOCKING_CONNECT | |
82d6e50b | 202 | #define SELECT_CANT_DO_WRITE_MASK |
dd2a17ab KS |
203 | #else |
204 | #ifndef NON_BLOCKING_CONNECT | |
dd2a17ab KS |
205 | #ifdef HAVE_SELECT |
206 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
207 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
208 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
209 | #define NON_BLOCKING_CONNECT | |
210 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
211 | #endif /* O_NONBLOCK || O_NDELAY */ | |
212 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
213 | #endif /* HAVE_SELECT */ | |
dd2a17ab KS |
214 | #endif /* NON_BLOCKING_CONNECT */ |
215 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
216 | ||
e690ca94 KS |
217 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
218 | this system. We need to read full packets, so we need a | |
219 | "non-destructive" select. So we require either native select, | |
220 | or emulation of select using FIONREAD. */ | |
221 | ||
4a4bbad2 PE |
222 | #ifndef BROKEN_DATAGRAM_SOCKETS |
223 | # if defined HAVE_SELECT || defined USABLE_FIONREAD | |
224 | # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE | |
225 | # define DATAGRAM_SOCKETS | |
226 | # endif | |
227 | # endif | |
228 | #endif | |
e690ca94 | 229 | |
f00c449b SM |
230 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
231 | # define HAVE_SEQPACKET | |
232 | #endif | |
233 | ||
6b61353c | 234 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
6b61353c KH |
235 | #define ADAPTIVE_READ_BUFFERING |
236 | #endif | |
6b61353c KH |
237 | |
238 | #ifdef ADAPTIVE_READ_BUFFERING | |
d35af63c | 239 | #define READ_OUTPUT_DELAY_INCREMENT (EMACS_TIME_RESOLUTION / 100) |
6b61353c KH |
240 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) |
241 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
242 | ||
db853b7a KS |
243 | /* Number of processes which have a non-zero read_output_delay, |
244 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
245 | |
246 | static int process_output_delay_count; | |
247 | ||
db853b7a | 248 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
249 | |
250 | static int process_output_skip; | |
251 | ||
6b61353c KH |
252 | #else |
253 | #define process_output_delay_count 0 | |
254 | #endif | |
255 | ||
40ccffa6 | 256 | static void create_process (Lisp_Object, char **, Lisp_Object); |
4a4bbad2 | 257 | #ifdef USABLE_SIGIO |
f57e2426 | 258 | static int keyboard_bit_set (SELECT_TYPE *); |
006c5daa | 259 | #endif |
f57e2426 J |
260 | static void deactivate_process (Lisp_Object); |
261 | static void status_notify (struct Lisp_Process *); | |
262 | static int read_process_output (Lisp_Object, int); | |
4d7e6e51 | 263 | static void handle_child_signal (int); |
f57e2426 | 264 | static void create_pty (Lisp_Object); |
41d03b9a | 265 | |
583dcae4 | 266 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 267 | to detect C-g. It isn't actually used when doing interrupt input. */ |
4d7e6e51 | 268 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
269 | #define POLL_FOR_INPUT |
270 | #endif | |
271 | ||
d3da34e0 JB |
272 | static Lisp_Object get_process (register Lisp_Object name); |
273 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 274 | |
f388c88a EZ |
275 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
276 | ||
277 | static SELECT_TYPE input_wait_mask; | |
278 | ||
994d9841 | 279 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
280 | |
281 | static SELECT_TYPE non_keyboard_wait_mask; | |
282 | ||
994d9841 | 283 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
284 | |
285 | static SELECT_TYPE non_process_wait_mask; | |
286 | ||
3fad2ad2 | 287 | /* Mask for selecting for write. */ |
994d9841 | 288 | |
3fad2ad2 | 289 | static SELECT_TYPE write_mask; |
994d9841 | 290 | |
bad49fc7 | 291 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
292 | /* Mask of bits indicating the descriptors that we wait for connect to |
293 | complete on. Once they complete, they are removed from this mask | |
294 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
295 | ||
296 | static SELECT_TYPE connect_wait_mask; | |
297 | ||
298 | /* Number of bits set in connect_wait_mask. */ | |
299 | static int num_pending_connects; | |
f388c88a | 300 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 301 | |
7d0e672e RS |
302 | /* The largest descriptor currently in use for a process object. */ |
303 | static int max_process_desc; | |
304 | ||
3fad2ad2 J |
305 | /* The largest descriptor currently in use for input. */ |
306 | static int max_input_desc; | |
994d9841 | 307 | |
d0d6b7c5 | 308 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
40ccffa6 | 309 | static Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
310 | |
311 | /* Alist of elements (NAME . PROCESS) */ | |
40ccffa6 | 312 | static Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
313 | |
314 | /* Buffered-ahead input char from process, indexed by channel. | |
315 | -1 means empty (no char is buffered). | |
316 | Used on sys V where the only way to tell if there is any | |
317 | output from the process is to read at least one char. | |
318 | Always -1 on systems that support FIONREAD. */ | |
319 | ||
40ccffa6 | 320 | static int proc_buffered_char[MAXDESC]; |
dd2281ae | 321 | |
0fa1789e | 322 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
323 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
324 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 325 | |
e690ca94 KS |
326 | #ifdef DATAGRAM_SOCKETS |
327 | /* Table of `partner address' for datagram sockets. */ | |
40ccffa6 | 328 | static struct sockaddr_and_len { |
e690ca94 KS |
329 | struct sockaddr *sa; |
330 | int len; | |
331 | } datagram_address[MAXDESC]; | |
332 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 333 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
334 | #else |
335 | #define DATAGRAM_CHAN_P(chan) (0) | |
336 | #define DATAGRAM_CONN_P(proc) (0) | |
337 | #endif | |
338 | ||
93b4f699 RS |
339 | /* Maximum number of bytes to send to a pty without an eof. */ |
340 | static int pty_max_bytes; | |
3b9a3dfa | 341 | |
6a09a33b | 342 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 343 | static void |
6a09a33b PE |
344 | pset_buffer (struct Lisp_Process *p, Lisp_Object val) |
345 | { | |
346 | p->buffer = val; | |
347 | } | |
b0ab8123 | 348 | static void |
6a09a33b PE |
349 | pset_command (struct Lisp_Process *p, Lisp_Object val) |
350 | { | |
351 | p->command = val; | |
352 | } | |
b0ab8123 | 353 | static void |
6a09a33b PE |
354 | pset_decode_coding_system (struct Lisp_Process *p, Lisp_Object val) |
355 | { | |
356 | p->decode_coding_system = val; | |
357 | } | |
b0ab8123 | 358 | static void |
6a09a33b PE |
359 | pset_decoding_buf (struct Lisp_Process *p, Lisp_Object val) |
360 | { | |
361 | p->decoding_buf = val; | |
362 | } | |
b0ab8123 | 363 | static void |
6a09a33b PE |
364 | pset_encode_coding_system (struct Lisp_Process *p, Lisp_Object val) |
365 | { | |
366 | p->encode_coding_system = val; | |
367 | } | |
b0ab8123 | 368 | static void |
6a09a33b PE |
369 | pset_encoding_buf (struct Lisp_Process *p, Lisp_Object val) |
370 | { | |
371 | p->encoding_buf = val; | |
372 | } | |
b0ab8123 | 373 | static void |
6a09a33b PE |
374 | pset_filter (struct Lisp_Process *p, Lisp_Object val) |
375 | { | |
376 | p->filter = val; | |
377 | } | |
b0ab8123 | 378 | static void |
6a09a33b PE |
379 | pset_log (struct Lisp_Process *p, Lisp_Object val) |
380 | { | |
381 | p->log = val; | |
382 | } | |
b0ab8123 | 383 | static void |
6a09a33b PE |
384 | pset_mark (struct Lisp_Process *p, Lisp_Object val) |
385 | { | |
386 | p->mark = val; | |
387 | } | |
b0ab8123 | 388 | static void |
6a09a33b PE |
389 | pset_name (struct Lisp_Process *p, Lisp_Object val) |
390 | { | |
391 | p->name = val; | |
392 | } | |
b0ab8123 | 393 | static void |
6a09a33b PE |
394 | pset_plist (struct Lisp_Process *p, Lisp_Object val) |
395 | { | |
396 | p->plist = val; | |
397 | } | |
b0ab8123 | 398 | static void |
6a09a33b PE |
399 | pset_sentinel (struct Lisp_Process *p, Lisp_Object val) |
400 | { | |
401 | p->sentinel = val; | |
402 | } | |
b0ab8123 | 403 | static void |
6a09a33b PE |
404 | pset_status (struct Lisp_Process *p, Lisp_Object val) |
405 | { | |
406 | p->status = val; | |
407 | } | |
b0ab8123 | 408 | static void |
6a09a33b PE |
409 | pset_tty_name (struct Lisp_Process *p, Lisp_Object val) |
410 | { | |
411 | p->tty_name = val; | |
412 | } | |
b0ab8123 | 413 | static void |
6a09a33b PE |
414 | pset_type (struct Lisp_Process *p, Lisp_Object val) |
415 | { | |
416 | p->type = val; | |
417 | } | |
b0ab8123 | 418 | static void |
6a09a33b PE |
419 | pset_write_queue (struct Lisp_Process *p, Lisp_Object val) |
420 | { | |
421 | p->write_queue = val; | |
422 | } | |
423 | ||
d0d6b7c5 | 424 | \f |
3fad2ad2 | 425 | |
40ccffa6 | 426 | static struct fd_callback_data |
3fad2ad2 J |
427 | { |
428 | fd_callback func; | |
429 | void *data; | |
430 | #define FOR_READ 1 | |
431 | #define FOR_WRITE 2 | |
432 | int condition; /* mask of the defines above. */ | |
433 | } fd_callback_info[MAXDESC]; | |
434 | ||
435 | ||
436 | /* Add a file descriptor FD to be monitored for when read is possible. | |
437 | When read is possible, call FUNC with argument DATA. */ | |
438 | ||
439 | void | |
440 | add_read_fd (int fd, fd_callback func, void *data) | |
441 | { | |
a54e2c05 | 442 | eassert (fd < MAXDESC); |
3fad2ad2 J |
443 | add_keyboard_wait_descriptor (fd); |
444 | ||
445 | fd_callback_info[fd].func = func; | |
446 | fd_callback_info[fd].data = data; | |
447 | fd_callback_info[fd].condition |= FOR_READ; | |
448 | } | |
449 | ||
450 | /* Stop monitoring file descriptor FD for when read is possible. */ | |
451 | ||
452 | void | |
453 | delete_read_fd (int fd) | |
454 | { | |
a54e2c05 | 455 | eassert (fd < MAXDESC); |
3fad2ad2 J |
456 | delete_keyboard_wait_descriptor (fd); |
457 | ||
458 | fd_callback_info[fd].condition &= ~FOR_READ; | |
459 | if (fd_callback_info[fd].condition == 0) | |
460 | { | |
461 | fd_callback_info[fd].func = 0; | |
462 | fd_callback_info[fd].data = 0; | |
463 | } | |
464 | } | |
465 | ||
466 | /* Add a file descriptor FD to be monitored for when write is possible. | |
467 | When write is possible, call FUNC with argument DATA. */ | |
468 | ||
469 | void | |
470 | add_write_fd (int fd, fd_callback func, void *data) | |
471 | { | |
a54e2c05 | 472 | eassert (fd < MAXDESC); |
3fad2ad2 J |
473 | FD_SET (fd, &write_mask); |
474 | if (fd > max_input_desc) | |
475 | max_input_desc = fd; | |
476 | ||
477 | fd_callback_info[fd].func = func; | |
478 | fd_callback_info[fd].data = data; | |
479 | fd_callback_info[fd].condition |= FOR_WRITE; | |
480 | } | |
481 | ||
482 | /* Stop monitoring file descriptor FD for when write is possible. */ | |
483 | ||
484 | void | |
485 | delete_write_fd (int fd) | |
486 | { | |
487 | int lim = max_input_desc; | |
488 | ||
a54e2c05 | 489 | eassert (fd < MAXDESC); |
3fad2ad2 J |
490 | FD_CLR (fd, &write_mask); |
491 | fd_callback_info[fd].condition &= ~FOR_WRITE; | |
492 | if (fd_callback_info[fd].condition == 0) | |
493 | { | |
494 | fd_callback_info[fd].func = 0; | |
495 | fd_callback_info[fd].data = 0; | |
496 | ||
497 | if (fd == max_input_desc) | |
498 | for (fd = lim; fd >= 0; fd--) | |
499 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) | |
500 | { | |
501 | max_input_desc = fd; | |
502 | break; | |
503 | } | |
51b59d79 | 504 | |
3fad2ad2 J |
505 | } |
506 | } | |
507 | ||
508 | \f | |
d0d6b7c5 JB |
509 | /* Compute the Lisp form of the process status, p->status, from |
510 | the numeric status that was returned by `wait'. */ | |
511 | ||
bba104c1 | 512 | static Lisp_Object status_convert (int); |
f9738840 | 513 | |
ff6daed3 | 514 | static void |
d3da34e0 | 515 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 516 | { |
6bfd98e7 | 517 | eassert (p->raw_status_new); |
6a09a33b | 518 | pset_status (p, status_convert (p->raw_status)); |
6bfd98e7 | 519 | p->raw_status_new = 0; |
d0d6b7c5 JB |
520 | } |
521 | ||
177c0ea7 | 522 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
523 | the list that we use internally. */ |
524 | ||
ff6daed3 | 525 | static Lisp_Object |
bba104c1 | 526 | status_convert (int w) |
d0d6b7c5 JB |
527 | { |
528 | if (WIFSTOPPED (w)) | |
529 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
530 | else if (WIFEXITED (w)) | |
13294f95 | 531 | return Fcons (Qexit, Fcons (make_number (WEXITSTATUS (w)), |
d0d6b7c5 JB |
532 | WCOREDUMP (w) ? Qt : Qnil)); |
533 | else if (WIFSIGNALED (w)) | |
534 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
535 | WCOREDUMP (w) ? Qt : Qnil)); | |
536 | else | |
537 | return Qrun; | |
538 | } | |
539 | ||
540 | /* Given a status-list, extract the three pieces of information | |
541 | and store them individually through the three pointers. */ | |
542 | ||
ff6daed3 | 543 | static void |
d3da34e0 | 544 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, int *coredump) |
d0d6b7c5 JB |
545 | { |
546 | Lisp_Object tem; | |
547 | ||
bcd69aea | 548 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
549 | { |
550 | *symbol = l; | |
551 | *code = 0; | |
552 | *coredump = 0; | |
553 | } | |
554 | else | |
555 | { | |
70949dac KR |
556 | *symbol = XCAR (l); |
557 | tem = XCDR (l); | |
558 | *code = XFASTINT (XCAR (tem)); | |
559 | tem = XCDR (tem); | |
d0d6b7c5 JB |
560 | *coredump = !NILP (tem); |
561 | } | |
562 | } | |
563 | ||
564 | /* Return a string describing a process status list. */ | |
565 | ||
116c423c | 566 | static Lisp_Object |
d3da34e0 | 567 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 568 | { |
4d2b044c | 569 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
570 | Lisp_Object symbol; |
571 | int code, coredump; | |
572 | Lisp_Object string, string2; | |
573 | ||
574 | decode_status (status, &symbol, &code, &coredump); | |
575 | ||
576 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
577 | { | |
aa1ba90e | 578 | char const *signame; |
ca9c0567 | 579 | synchronize_system_messages_locale (); |
68c45bf0 | 580 | signame = strsignal (code); |
b97ad9ea | 581 | if (signame == 0) |
66bd43d1 KH |
582 | string = build_string ("unknown"); |
583 | else | |
584 | { | |
585 | int c1, c2; | |
586 | ||
d7ea76b4 | 587 | string = build_unibyte_string (signame); |
66bd43d1 KH |
588 | if (! NILP (Vlocale_coding_system)) |
589 | string = (code_convert_string_norecord | |
590 | (string, Vlocale_coding_system, 0)); | |
42a5b22f | 591 | c1 = STRING_CHAR (SDATA (string)); |
5da9919f | 592 | c2 = downcase (c1); |
66bd43d1 | 593 | if (c1 != c2) |
4735b74e | 594 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 595 | } |
d0d6b7c5 | 596 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
597 | return concat2 (string, string2); |
598 | } | |
599 | else if (EQ (symbol, Qexit)) | |
600 | { | |
116c423c KS |
601 | if (NETCONN1_P (p)) |
602 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
603 | if (code == 0) |
604 | return build_string ("finished\n"); | |
f2980264 | 605 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 606 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
607 | return concat3 (build_string ("exited abnormally with code "), |
608 | string, string2); | |
d0d6b7c5 | 609 | } |
dd2a17ab KS |
610 | else if (EQ (symbol, Qfailed)) |
611 | { | |
612 | string = Fnumber_to_string (make_number (code)); | |
613 | string2 = build_string ("\n"); | |
e690ca94 KS |
614 | return concat3 (build_string ("failed with code "), |
615 | string, string2); | |
dd2a17ab | 616 | } |
d0d6b7c5 JB |
617 | else |
618 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
619 | } | |
620 | \f | |
621 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 622 | |
9bf58201 DN |
623 | /* The file name of the pty opened by allocate_pty. */ |
624 | static char pty_name[24]; | |
625 | ||
875e6b94 KH |
626 | /* Open an available pty, returning a file descriptor. |
627 | Return -1 on failure. | |
628 | The file name of the terminal corresponding to the pty | |
629 | is left in the variable pty_name. */ | |
630 | ||
ff6daed3 | 631 | static int |
d3da34e0 | 632 | allocate_pty (void) |
d0d6b7c5 | 633 | { |
d0d6b7c5 JB |
634 | int fd; |
635 | ||
636 | #ifdef PTY_ITERATION | |
637 | PTY_ITERATION | |
638 | #else | |
be02381c | 639 | register int c, i; |
d0d6b7c5 JB |
640 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) |
641 | for (i = 0; i < 16; i++) | |
642 | #endif | |
643 | { | |
644 | #ifdef PTY_NAME_SPRINTF | |
645 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
646 | #else |
647 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
648 | #endif /* no PTY_NAME_SPRINTF */ |
649 | ||
4d7c105e RS |
650 | #ifdef PTY_OPEN |
651 | PTY_OPEN; | |
652 | #else /* no PTY_OPEN */ | |
34967d0f | 653 | { |
34967d0f SM |
654 | # ifdef O_NONBLOCK |
655 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
656 | # else | |
657 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
658 | # endif | |
34967d0f | 659 | } |
4d7c105e | 660 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
661 | |
662 | if (fd >= 0) | |
663 | { | |
664 | /* check to make certain that both sides are available | |
665 | this avoids a nasty yet stupid bug in rlogins */ | |
666 | #ifdef PTY_TTY_NAME_SPRINTF | |
667 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 668 | #else |
63136da6 | 669 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 670 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
671 | if (access (pty_name, 6) != 0) |
672 | { | |
68c45bf0 | 673 | emacs_close (fd); |
132d0475 | 674 | # ifndef __sgi |
d0d6b7c5 | 675 | continue; |
34967d0f | 676 | # else |
d0d6b7c5 | 677 | return -1; |
132d0475 | 678 | # endif /* __sgi */ |
d0d6b7c5 | 679 | } |
d0d6b7c5 JB |
680 | setup_pty (fd); |
681 | return fd; | |
682 | } | |
683 | } | |
684 | return -1; | |
685 | } | |
686 | #endif /* HAVE_PTYS */ | |
687 | \f | |
ff6daed3 | 688 | static Lisp_Object |
d3da34e0 | 689 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
690 | { |
691 | register Lisp_Object val, tem, name1; | |
692 | register struct Lisp_Process *p; | |
31c286f7 PE |
693 | char suffix[sizeof "<>" + INT_STRLEN_BOUND (printmax_t)]; |
694 | printmax_t i; | |
d0d6b7c5 | 695 | |
98423852 | 696 | p = allocate_process (); |
62efea5e DA |
697 | /* Initialize Lisp data. Note that allocate_process initializes all |
698 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
6a09a33b PE |
699 | pset_status (p, Qrun); |
700 | pset_mark (p, Fmake_marker ()); | |
d0d6b7c5 | 701 | |
62efea5e DA |
702 | /* Initialize non-Lisp data. Note that allocate_process zeroes out all |
703 | non-Lisp data, so do it only for slots which should not be zero. */ | |
704 | p->infd = -1; | |
705 | p->outfd = -1; | |
6b61353c | 706 | |
8af55556 TZ |
707 | #ifdef HAVE_GNUTLS |
708 | p->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
709 | #endif | |
710 | ||
d0d6b7c5 JB |
711 | /* If name is already in use, modify it until it is unused. */ |
712 | ||
713 | name1 = name; | |
714 | for (i = 1; ; i++) | |
715 | { | |
716 | tem = Fget_process (name1); | |
717 | if (NILP (tem)) break; | |
a8290ec3 | 718 | name1 = concat2 (name, make_formatted_string (suffix, "<%"pMd">", i)); |
d0d6b7c5 JB |
719 | } |
720 | name = name1; | |
6a09a33b | 721 | pset_name (p, name); |
23d6bb9c | 722 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
723 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
724 | return val; | |
725 | } | |
726 | ||
ff6daed3 | 727 | static void |
d3da34e0 | 728 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
729 | { |
730 | register Lisp_Object pair; | |
731 | ||
732 | pair = Frassq (proc, Vprocess_alist); | |
733 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
734 | |
735 | deactivate_process (proc); | |
736 | } | |
03f04413 | 737 | |
d0d6b7c5 JB |
738 | \f |
739 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 740 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 741 | (Lisp_Object object) |
d0d6b7c5 | 742 | { |
4ee3e309 | 743 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
744 | } |
745 | ||
746 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 747 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 748 | (register Lisp_Object name) |
d0d6b7c5 | 749 | { |
bcd69aea | 750 | if (PROCESSP (name)) |
d0d6b7c5 | 751 | return name; |
b7826503 | 752 | CHECK_STRING (name); |
d0d6b7c5 JB |
753 | return Fcdr (Fassoc (name, Vprocess_alist)); |
754 | } | |
755 | ||
ebb9e16f JB |
756 | /* This is how commands for the user decode process arguments. It |
757 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
758 | Buffers denote the first process in the buffer, and nil denotes the | |
759 | current buffer. */ | |
d0d6b7c5 | 760 | |
77b221b1 | 761 | static Lisp_Object |
d3da34e0 | 762 | get_process (register Lisp_Object name) |
d0d6b7c5 | 763 | { |
1619761d KH |
764 | register Lisp_Object proc, obj; |
765 | if (STRINGP (name)) | |
766 | { | |
767 | obj = Fget_process (name); | |
768 | if (NILP (obj)) | |
769 | obj = Fget_buffer (name); | |
770 | if (NILP (obj)) | |
d5db4077 | 771 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
772 | } |
773 | else if (NILP (name)) | |
774 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 775 | else |
1619761d KH |
776 | obj = name; |
777 | ||
778 | /* Now obj should be either a buffer object or a process object. | |
779 | */ | |
780 | if (BUFFERP (obj)) | |
d0d6b7c5 | 781 | { |
1619761d | 782 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 783 | if (NILP (proc)) |
4b4deea2 | 784 | error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj), name))); |
d0d6b7c5 | 785 | } |
d0d6b7c5 | 786 | else |
1619761d | 787 | { |
b7826503 | 788 | CHECK_PROCESS (obj); |
1619761d KH |
789 | proc = obj; |
790 | } | |
791 | return proc; | |
d0d6b7c5 JB |
792 | } |
793 | ||
a5cfdda8 KS |
794 | |
795 | #ifdef SIGCHLD | |
796 | /* Fdelete_process promises to immediately forget about the process, but in | |
797 | reality, Emacs needs to remember those processes until they have been | |
20ef56db | 798 | treated by the SIGCHLD handler; otherwise this handler would consider the |
a5cfdda8 KS |
799 | process as being synchronous and say that the synchronous process is |
800 | dead. */ | |
801 | static Lisp_Object deleted_pid_list; | |
802 | #endif | |
803 | ||
d0d6b7c5 | 804 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
805 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
806 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
807 | nil, indicating the current buffer's process. */) | |
5842a27b | 808 | (register Lisp_Object process) |
d0d6b7c5 | 809 | { |
ff6daed3 KS |
810 | register struct Lisp_Process *p; |
811 | ||
4ee3e309 | 812 | process = get_process (process); |
ff6daed3 KS |
813 | p = XPROCESS (process); |
814 | ||
6bfd98e7 | 815 | p->raw_status_new = 0; |
d888760c | 816 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 817 | { |
6a09a33b | 818 | pset_status (p, Fcons (Qexit, Fcons (make_number (0), Qnil))); |
60f0fb11 | 819 | p->tick = ++process_tick; |
ff6daed3 | 820 | status_notify (p); |
e42bdf01 | 821 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 822 | } |
60f0fb11 | 823 | else if (p->infd >= 0) |
d0d6b7c5 | 824 | { |
a5cfdda8 KS |
825 | #ifdef SIGCHLD |
826 | Lisp_Object symbol; | |
d311d28c | 827 | pid_t pid = p->pid; |
a5cfdda8 KS |
828 | |
829 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 830 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
831 | /* GC treated elements set to nil. */ |
832 | Fdelq (Qnil, deleted_pid_list)); | |
833 | /* If the process has already signaled, remove it from the list. */ | |
834 | if (p->raw_status_new) | |
835 | update_status (p); | |
4d2b044c DA |
836 | symbol = p->status; |
837 | if (CONSP (p->status)) | |
838 | symbol = XCAR (p->status); | |
a5cfdda8 | 839 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) |
29ed4d51 CY |
840 | deleted_pid_list |
841 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
842 | else |
843 | #endif | |
844 | { | |
845 | Fkill_process (process, Qnil); | |
20ef56db PE |
846 | /* Do this now, since remove_process will make the |
847 | SIGCHLD handler do nothing. */ | |
6a09a33b | 848 | pset_status (p, Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil))); |
60f0fb11 | 849 | p->tick = ++process_tick; |
a5cfdda8 | 850 | status_notify (p); |
e42bdf01 | 851 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 852 | } |
d0d6b7c5 | 853 | } |
4ee3e309 | 854 | remove_process (process); |
d0d6b7c5 JB |
855 | return Qnil; |
856 | } | |
857 | \f | |
858 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
859 | doc: /* Return the status of PROCESS. |
860 | The returned value is one of the following symbols: | |
861 | run -- for a process that is running. | |
862 | stop -- for a process stopped but continuable. | |
863 | exit -- for a process that has exited. | |
864 | signal -- for a process that has got a fatal signal. | |
865 | open -- for a network stream connection that is open. | |
e690ca94 | 866 | listen -- for a network stream server that is listening. |
fdb82f93 | 867 | closed -- for a network stream connection that is closed. |
e4984112 KS |
868 | connect -- when waiting for a non-blocking connection to complete. |
869 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
870 | nil -- if arg is a process name and no such process exists. |
871 | PROCESS may be a process, a buffer, the name of a process, or | |
872 | nil, indicating the current buffer's process. */) | |
5842a27b | 873 | (register Lisp_Object process) |
d0d6b7c5 JB |
874 | { |
875 | register struct Lisp_Process *p; | |
876 | register Lisp_Object status; | |
343f4114 | 877 | |
4ee3e309 EN |
878 | if (STRINGP (process)) |
879 | process = Fget_process (process); | |
343f4114 | 880 | else |
4ee3e309 | 881 | process = get_process (process); |
343f4114 | 882 | |
4ee3e309 EN |
883 | if (NILP (process)) |
884 | return process; | |
343f4114 | 885 | |
4ee3e309 | 886 | p = XPROCESS (process); |
6bfd98e7 | 887 | if (p->raw_status_new) |
d0d6b7c5 | 888 | update_status (p); |
4d2b044c | 889 | status = p->status; |
bcd69aea | 890 | if (CONSP (status)) |
70949dac | 891 | status = XCAR (status); |
d888760c | 892 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 893 | { |
e690ca94 | 894 | if (EQ (status, Qexit)) |
d0d6b7c5 | 895 | status = Qclosed; |
4d2b044c | 896 | else if (EQ (p->command, Qt)) |
e690ca94 KS |
897 | status = Qstop; |
898 | else if (EQ (status, Qrun)) | |
899 | status = Qopen; | |
d0d6b7c5 JB |
900 | } |
901 | return status; | |
902 | } | |
903 | ||
904 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
905 | 1, 1, 0, | |
fdb82f93 PJ |
906 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
907 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 908 | (register Lisp_Object process) |
d0d6b7c5 | 909 | { |
b7826503 | 910 | CHECK_PROCESS (process); |
6bfd98e7 | 911 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 | 912 | update_status (XPROCESS (process)); |
4d2b044c DA |
913 | if (CONSP (XPROCESS (process)->status)) |
914 | return XCAR (XCDR (XPROCESS (process)->status)); | |
d0d6b7c5 JB |
915 | return make_number (0); |
916 | } | |
917 | ||
918 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 919 | doc: /* Return the process id of PROCESS. |
f3d9532b | 920 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 921 | For a network connection, this value is nil. */) |
5842a27b | 922 | (register Lisp_Object process) |
d0d6b7c5 | 923 | { |
d311d28c | 924 | pid_t pid; |
d30fe779 | 925 | |
b7826503 | 926 | CHECK_PROCESS (process); |
d30fe779 EZ |
927 | pid = XPROCESS (process)->pid; |
928 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
929 | } |
930 | ||
931 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
932 | doc: /* Return the name of PROCESS, as a string. |
933 | This is the name of the program invoked in PROCESS, | |
934 | possibly modified to make it unique among process names. */) | |
5842a27b | 935 | (register Lisp_Object process) |
d0d6b7c5 | 936 | { |
b7826503 | 937 | CHECK_PROCESS (process); |
4d2b044c | 938 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
939 | } |
940 | ||
941 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
942 | doc: /* Return the command that was executed to start PROCESS. |
943 | This is a list of strings, the first string being the program executed | |
944 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
945 | For a network or serial process, this is nil (process is running) or t |
946 | \(process is stopped). */) | |
5842a27b | 947 | (register Lisp_Object process) |
d0d6b7c5 | 948 | { |
b7826503 | 949 | CHECK_PROCESS (process); |
4d2b044c | 950 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
951 | } |
952 | ||
3b9a3dfa | 953 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
954 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
955 | This is the terminal that the process itself reads and writes on, | |
956 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 957 | (register Lisp_Object process) |
3b9a3dfa | 958 | { |
b7826503 | 959 | CHECK_PROCESS (process); |
4d2b044c | 960 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
961 | } |
962 | ||
d0d6b7c5 | 963 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 | 964 | 2, 2, 0, |
76147d94 DD |
965 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). |
966 | Return BUFFER. */) | |
5842a27b | 967 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 968 | { |
e690ca94 KS |
969 | struct Lisp_Process *p; |
970 | ||
b7826503 | 971 | CHECK_PROCESS (process); |
d0d6b7c5 | 972 | if (!NILP (buffer)) |
b7826503 | 973 | CHECK_BUFFER (buffer); |
e690ca94 | 974 | p = XPROCESS (process); |
6a09a33b | 975 | pset_buffer (p, buffer); |
d888760c | 976 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 977 | pset_childp (p, Fplist_put (p->childp, QCbuffer, buffer)); |
03f04413 | 978 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
979 | return buffer; |
980 | } | |
981 | ||
982 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
983 | 1, 1, 0, |
984 | doc: /* Return the buffer PROCESS is associated with. | |
985 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 986 | (register Lisp_Object process) |
d0d6b7c5 | 987 | { |
b7826503 | 988 | CHECK_PROCESS (process); |
4d2b044c | 989 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
990 | } |
991 | ||
992 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
993 | 1, 1, 0, |
994 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 995 | (register Lisp_Object process) |
d0d6b7c5 | 996 | { |
b7826503 | 997 | CHECK_PROCESS (process); |
4d2b044c | 998 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
999 | } |
1000 | ||
1001 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
1002 | 2, 2, 0, |
1003 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 1004 | A value of t means stop accepting output from the process. |
3452df9e KS |
1005 | |
1006 | When a process has a filter, its buffer is not used for output. | |
1007 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 1008 | passed to the filter. |
3452df9e | 1009 | |
fdb82f93 | 1010 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
1011 | The string argument is normally a multibyte string, except: |
1012 | - if the process' input coding system is no-conversion or raw-text, | |
1013 | it is a unibyte string (the non-converted input), or else | |
1014 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
1015 | string (the result of converting the decoded input multibyte | |
1016 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 1017 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 1018 | { |
471f86b9 | 1019 | struct Lisp_Process *p; |
177c0ea7 | 1020 | |
b7826503 | 1021 | CHECK_PROCESS (process); |
471f86b9 GM |
1022 | p = XPROCESS (process); |
1023 | ||
1024 | /* Don't signal an error if the process' input file descriptor | |
1025 | is closed. This could make debugging Lisp more difficult, | |
1026 | for example when doing something like | |
1027 | ||
1028 | (setq process (start-process ...)) | |
1029 | (debug) | |
1030 | (set-process-filter process ...) */ | |
177c0ea7 | 1031 | |
60f0fb11 | 1032 | if (p->infd >= 0) |
a69281ff | 1033 | { |
4d2b044c | 1034 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 1035 | { |
60f0fb11 SM |
1036 | FD_CLR (p->infd, &input_wait_mask); |
1037 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1038 | } |
4d2b044c | 1039 | else if (EQ (p->filter, Qt) |
d888760c | 1040 | /* Network or serial process not stopped: */ |
4d2b044c | 1041 | && !EQ (p->command, Qt)) |
471f86b9 | 1042 | { |
60f0fb11 SM |
1043 | FD_SET (p->infd, &input_wait_mask); |
1044 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1045 | } |
a69281ff | 1046 | } |
177c0ea7 | 1047 | |
6a09a33b | 1048 | pset_filter (p, filter); |
d888760c | 1049 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1050 | pset_childp (p, Fplist_put (p->childp, QCfilter, filter)); |
03f04413 | 1051 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1052 | return filter; |
1053 | } | |
1054 | ||
1055 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1056 | 1, 1, 0, |
1057 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1058 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 1059 | (register Lisp_Object process) |
d0d6b7c5 | 1060 | { |
b7826503 | 1061 | CHECK_PROCESS (process); |
4d2b044c | 1062 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1063 | } |
1064 | ||
1065 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1066 | 2, 2, 0, |
1067 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1068 | The sentinel is called as a function when the process changes state. | |
1069 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 1070 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1071 | { |
6b61353c KH |
1072 | struct Lisp_Process *p; |
1073 | ||
b7826503 | 1074 | CHECK_PROCESS (process); |
6b61353c KH |
1075 | p = XPROCESS (process); |
1076 | ||
6a09a33b | 1077 | pset_sentinel (p, sentinel); |
d888760c | 1078 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1079 | pset_childp (p, Fplist_put (p->childp, QCsentinel, sentinel)); |
d0d6b7c5 JB |
1080 | return sentinel; |
1081 | } | |
1082 | ||
1083 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1084 | 1, 1, 0, |
1085 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1086 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 1087 | (register Lisp_Object process) |
d0d6b7c5 | 1088 | { |
b7826503 | 1089 | CHECK_PROCESS (process); |
4d2b044c | 1090 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1091 | } |
1092 | ||
396df322 | 1093 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1094 | Sset_process_window_size, 3, 3, 0, |
1095 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1096 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1097 | { |
b7826503 | 1098 | CHECK_PROCESS (process); |
af5a5a98 AS |
1099 | CHECK_RANGED_INTEGER (height, 0, INT_MAX); |
1100 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); | |
177c0ea7 | 1101 | |
60f0fb11 SM |
1102 | if (XPROCESS (process)->infd < 0 |
1103 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1104 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1105 | return Qnil; |
1106 | else | |
1107 | return Qt; | |
1108 | } | |
1109 | ||
52a1b894 | 1110 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1111 | Fset_process_inherit_coding_system_flag, |
1112 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1113 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1114 | If the second argument FLAG is non-nil, then the variable | |
1115 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1116 | will be bound to the value of the coding system used to decode | |
1117 | the process output. | |
1118 | ||
1119 | This is useful when the coding system specified for the process buffer | |
1120 | leaves either the character code conversion or the end-of-line conversion | |
1121 | unspecified, or if the coding system used to decode the process output | |
1122 | is more appropriate for saving the process buffer. | |
1123 | ||
1124 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1125 | starting the process is an alternative way of setting the inherit flag | |
016a35df GM |
1126 | for the process which will run. |
1127 | ||
1128 | This function returns FLAG. */) | |
5842a27b | 1129 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1130 | { |
b7826503 | 1131 | CHECK_PROCESS (process); |
60f0fb11 | 1132 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1133 | return flag; |
1134 | } | |
1135 | ||
e690ca94 KS |
1136 | DEFUN ("set-process-query-on-exit-flag", |
1137 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1138 | 2, 2, 0, | |
1139 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1140 | If the second argument FLAG is non-nil, Emacs will query the user before |
016a35df GM |
1141 | exiting or killing a buffer if PROCESS is running. This function |
1142 | returns FLAG. */) | |
5842a27b | 1143 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1144 | { |
b7826503 | 1145 | CHECK_PROCESS (process); |
60f0fb11 | 1146 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1147 | return flag; |
d0d6b7c5 | 1148 | } |
312c9964 | 1149 | |
e690ca94 KS |
1150 | DEFUN ("process-query-on-exit-flag", |
1151 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1152 | 1, 1, 0, |
f3d9532b | 1153 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1154 | (register Lisp_Object process) |
de282a05 | 1155 | { |
b7826503 | 1156 | CHECK_PROCESS (process); |
60f0fb11 | 1157 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1158 | } |
1159 | ||
e690ca94 KS |
1160 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, |
1161 | 1, 2, 0, | |
1162 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1163 | For a network or serial connection, the value depends on the optional |
1164 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1165 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1166 | connection. If KEY is t, the complete contact information for the | |
1167 | connection is returned, else the specific value for the keyword KEY is | |
1168 | returned. See `make-network-process' or `make-serial-process' for a | |
1169 | list of keywords. */) | |
5842a27b | 1170 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1171 | { |
1172 | Lisp_Object contact; | |
1173 | ||
1174 | CHECK_PROCESS (process); | |
4d2b044c | 1175 | contact = XPROCESS (process)->childp; |
e690ca94 KS |
1176 | |
1177 | #ifdef DATAGRAM_SOCKETS | |
1178 | if (DATAGRAM_CONN_P (process) | |
1179 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1180 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1181 | Fprocess_datagram_address (process)); |
1182 | #endif | |
1183 | ||
d888760c | 1184 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1185 | return contact; |
d888760c | 1186 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1187 | return Fcons (Fplist_get (contact, QChost), |
1188 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1189 | if (NILP (key) && SERIALCONN_P (process)) |
1190 | return Fcons (Fplist_get (contact, QCport), | |
1191 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1192 | return Fplist_get (contact, key); |
de282a05 RS |
1193 | } |
1194 | ||
faa7db08 KS |
1195 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1196 | 1, 1, 0, | |
1197 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1198 | (register Lisp_Object process) |
365aee82 | 1199 | { |
ac4a7584 | 1200 | CHECK_PROCESS (process); |
4d2b044c | 1201 | return XPROCESS (process)->plist; |
ac4a7584 | 1202 | } |
365aee82 | 1203 | |
faa7db08 KS |
1204 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1205 | 2, 2, 0, | |
26a086c6 | 1206 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1207 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1208 | { |
365aee82 | 1209 | CHECK_PROCESS (process); |
faa7db08 | 1210 | CHECK_LIST (plist); |
365aee82 | 1211 | |
6a09a33b | 1212 | pset_plist (XPROCESS (process), plist); |
26a086c6 | 1213 | return plist; |
365aee82 KS |
1214 | } |
1215 | ||
312c9964 RS |
1216 | #if 0 /* Turned off because we don't currently record this info |
1217 | in the process. Perhaps add it. */ | |
1218 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1219 | doc: /* Return the connection type of PROCESS. |
1220 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1221 | a socket connection. */) | |
5842a27b | 1222 | (Lisp_Object process) |
312c9964 | 1223 | { |
4d2b044c | 1224 | return XPROCESS (process)->type; |
312c9964 RS |
1225 | } |
1226 | #endif | |
2a7bb882 | 1227 | |
d888760c GM |
1228 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1229 | doc: /* Return the connection type of PROCESS. | |
1230 | The value is either the symbol `real', `network', or `serial'. | |
1231 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1232 | nil, indicating the current buffer's process. */) | |
5842a27b | 1233 | (Lisp_Object process) |
d888760c GM |
1234 | { |
1235 | Lisp_Object proc; | |
1236 | proc = get_process (process); | |
4d2b044c | 1237 | return XPROCESS (proc)->type; |
d888760c | 1238 | } |
991234f0 | 1239 | |
991234f0 | 1240 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1241 | 1, 2, 0, |
991234f0 | 1242 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1243 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1244 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1245 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1246 | number in the string, even when present in ADDRESS. |
1247 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1248 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1249 | { |
991234f0 KS |
1250 | if (NILP (address)) |
1251 | return Qnil; | |
1252 | ||
1253 | if (STRINGP (address)) /* AF_LOCAL */ | |
1254 | return address; | |
1255 | ||
e1652a86 | 1256 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1257 | { |
1258 | register struct Lisp_Vector *p = XVECTOR (address); | |
d311d28c | 1259 | ptrdiff_t size = p->header.size; |
ded83665 | 1260 | Lisp_Object args[10]; |
0dccee41 | 1261 | int nargs, i; |
991234f0 | 1262 | |
eab3844f | 1263 | if (size == 4 || (size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1264 | { |
1265 | args[0] = build_string ("%d.%d.%d.%d"); | |
1266 | nargs = 4; | |
1267 | } | |
eab3844f | 1268 | else if (size == 5) |
0dccee41 KS |
1269 | { |
1270 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1271 | nargs = 5; | |
1272 | } | |
eab3844f | 1273 | else if (size == 8 || (size == 9 && !NILP (omit_port))) |
e1652a86 KS |
1274 | { |
1275 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1276 | nargs = 8; | |
1277 | } | |
eab3844f | 1278 | else if (size == 9) |
e1652a86 KS |
1279 | { |
1280 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1281 | nargs = 9; | |
1282 | } | |
0dccee41 | 1283 | else |
991234f0 KS |
1284 | return Qnil; |
1285 | ||
0dccee41 | 1286 | for (i = 0; i < nargs; i++) |
cbf23adb | 1287 | { |
d311d28c | 1288 | if (! RANGED_INTEGERP (0, p->contents[i], 65535)) |
cbf23adb JB |
1289 | return Qnil; |
1290 | ||
1291 | if (nargs <= 5 /* IPv4 */ | |
1292 | && i < 4 /* host, not port */ | |
d311d28c | 1293 | && XINT (p->contents[i]) > 255) |
cbf23adb JB |
1294 | return Qnil; |
1295 | ||
1296 | args[i+1] = p->contents[i]; | |
1297 | } | |
1298 | ||
0dccee41 | 1299 | return Fformat (nargs+1, args); |
991234f0 KS |
1300 | } |
1301 | ||
1302 | if (CONSP (address)) | |
1303 | { | |
1304 | Lisp_Object args[2]; | |
1305 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1306 | args[1] = Fcar (address); |
991234f0 | 1307 | return Fformat (2, args); |
991234f0 KS |
1308 | } |
1309 | ||
1310 | return Qnil; | |
1311 | } | |
d0d6b7c5 JB |
1312 | |
1313 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1314 | doc: /* Return a list of all processes. */) |
5842a27b | 1315 | (void) |
d0d6b7c5 JB |
1316 | { |
1317 | return Fmapcar (Qcdr, Vprocess_alist); | |
1318 | } | |
1319 | \f | |
b0310da4 JB |
1320 | /* Starting asynchronous inferior processes. */ |
1321 | ||
d3da34e0 | 1322 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1323 | |
d0d6b7c5 | 1324 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1325 | doc: /* Start a program in a subprocess. Return the process object for it. |
1326 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1327 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1328 | |
1329 | Process output (both standard output and standard error streams) goes | |
1330 | at end of BUFFER, unless you specify an output stream or filter | |
1331 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1332 | this process is not associated with any buffer. |
1333 | ||
6b8bc570 CY |
1334 | PROGRAM is the program file name. It is searched for in `exec-path' |
1335 | (which see). If nil, just associate a pty with the buffer. Remaining | |
1336 | arguments are strings to give program as arguments. | |
320aebc9 | 1337 | |
4b6c5eee EZ |
1338 | If you want to separate standard output from standard error, invoke |
1339 | the command through a shell and redirect one of them using the shell | |
1340 | syntax. | |
320aebc9 | 1341 | |
3ecdf100 | 1342 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
f66c7cf8 | 1343 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 | 1344 | { |
1e30af70 | 1345 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1346 | register unsigned char **new_argv; |
f66c7cf8 | 1347 | ptrdiff_t i; |
d311d28c | 1348 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1349 | |
1350 | buffer = args[1]; | |
1351 | if (!NILP (buffer)) | |
1352 | buffer = Fget_buffer_create (buffer); | |
1353 | ||
1e30af70 JB |
1354 | /* Make sure that the child will be able to chdir to the current |
1355 | buffer's current directory, or its unhandled equivalent. We | |
1356 | can't just have the child check for an error when it does the | |
1357 | chdir, since it's in a vfork. | |
1358 | ||
1359 | We have to GCPRO around this because Fexpand_file_name and | |
1360 | Funhandled_file_name_directory might call a file name handling | |
1361 | function. The argument list is protected by the caller, so all | |
1362 | we really have to worry about is buffer. */ | |
1363 | { | |
1364 | struct gcpro gcpro1, gcpro2; | |
1365 | ||
4b4deea2 | 1366 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1367 | |
1368 | GCPRO2 (buffer, current_dir); | |
1369 | ||
ca319910 SM |
1370 | current_dir = Funhandled_file_name_directory (current_dir); |
1371 | if (NILP (current_dir)) | |
1372 | /* If the file name handler says that current_dir is unreachable, use | |
1373 | a sensible default. */ | |
1374 | current_dir = build_string ("~/"); | |
1375 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1376 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1377 | report_file_error ("Setting current directory", | |
4b4deea2 | 1378 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1379 | |
1380 | UNGCPRO; | |
1381 | } | |
1382 | ||
d0d6b7c5 | 1383 | name = args[0]; |
b7826503 | 1384 | CHECK_STRING (name); |
d0d6b7c5 JB |
1385 | |
1386 | program = args[2]; | |
1387 | ||
850d0752 NR |
1388 | if (!NILP (program)) |
1389 | CHECK_STRING (program); | |
d0d6b7c5 | 1390 | |
d0d6b7c5 | 1391 | proc = make_process (name); |
b0310da4 JB |
1392 | /* If an error occurs and we can't start the process, we want to |
1393 | remove it from the process list. This means that each error | |
1394 | check in create_process doesn't need to call remove_process | |
1395 | itself; it's all taken care of here. */ | |
1396 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 | 1397 | |
6a09a33b PE |
1398 | pset_childp (XPROCESS (proc), Qt); |
1399 | pset_plist (XPROCESS (proc), Qnil); | |
1400 | pset_type (XPROCESS (proc), Qreal); | |
1401 | pset_buffer (XPROCESS (proc), buffer); | |
1402 | pset_sentinel (XPROCESS (proc), Qnil); | |
1403 | pset_filter (XPROCESS (proc), Qnil); | |
1404 | pset_command (XPROCESS (proc), Flist (nargs - 2, args + 2)); | |
d0d6b7c5 | 1405 | |
8af55556 TZ |
1406 | #ifdef HAVE_GNUTLS |
1407 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1408 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
6a09a33b | 1409 | pset_gnutls_cred_type (XPROCESS (proc), Qnil); |
8af55556 TZ |
1410 | #endif |
1411 | ||
6b61353c | 1412 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1413 | XPROCESS (proc)->adaptive_read_buffering |
1414 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1415 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1416 | #endif |
1417 | ||
7af71e17 | 1418 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1419 | if (BUFFERP (buffer)) |
4d2b044c | 1420 | set_marker_both (XPROCESS (proc)->mark, buffer, |
d8a2934e RS |
1421 | BUF_ZV (XBUFFER (buffer)), |
1422 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1423 | |
67918941 | 1424 | { |
d5d4ae71 KH |
1425 | /* Decide coding systems for communicating with the process. Here |
1426 | we don't setup the structure coding_system nor pay attention to | |
1427 | unibyte mode. They are done in create_process. */ | |
1428 | ||
67918941 RS |
1429 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1430 | Lisp_Object coding_systems = Qt; | |
1431 | Lisp_Object val, *args2; | |
a4a37e65 | 1432 | struct gcpro gcpro1, gcpro2; |
67918941 | 1433 | |
d5d4ae71 KH |
1434 | val = Vcoding_system_for_read; |
1435 | if (NILP (val)) | |
67918941 | 1436 | { |
38182d90 | 1437 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1438 | args2[0] = Qstart_process; |
1439 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1440 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1441 | if (!NILP (program)) |
1442 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1443 | UNGCPRO; |
1444 | if (CONSP (coding_systems)) | |
70949dac | 1445 | val = XCAR (coding_systems); |
67918941 | 1446 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1447 | val = XCAR (Vdefault_process_coding_system); |
67918941 | 1448 | } |
6a09a33b | 1449 | pset_decode_coding_system (XPROCESS (proc), val); |
67918941 | 1450 | |
d5d4ae71 KH |
1451 | val = Vcoding_system_for_write; |
1452 | if (NILP (val)) | |
67918941 RS |
1453 | { |
1454 | if (EQ (coding_systems, Qt)) | |
1455 | { | |
38182d90 | 1456 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1457 | args2[0] = Qstart_process; |
1458 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1459 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1460 | if (!NILP (program)) |
1461 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1462 | UNGCPRO; |
1463 | } | |
1464 | if (CONSP (coding_systems)) | |
70949dac | 1465 | val = XCDR (coding_systems); |
67918941 | 1466 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1467 | val = XCDR (Vdefault_process_coding_system); |
67918941 | 1468 | } |
6a09a33b | 1469 | pset_encode_coding_system (XPROCESS (proc), val); |
e1dbe924 | 1470 | /* Note: At this moment, the above coding system may leave |
fcaf8878 KH |
1471 | text-conversion or eol-conversion unspecified. They will be |
1472 | decided after we read output from the process and decode it by | |
1473 | some coding system, or just before we actually send a text to | |
1474 | the process. */ | |
67918941 | 1475 | } |
0fa1789e | 1476 | |
a4a37e65 | 1477 | |
6a09a33b | 1478 | pset_decoding_buf (XPROCESS (proc), empty_unibyte_string); |
850d0752 | 1479 | XPROCESS (proc)->decoding_carryover = 0; |
6a09a33b | 1480 | pset_encoding_buf (XPROCESS (proc), empty_unibyte_string); |
ed30cf85 | 1481 | |
850d0752 NR |
1482 | XPROCESS (proc)->inherit_coding_system_flag |
1483 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1484 | |
850d0752 NR |
1485 | if (!NILP (program)) |
1486 | { | |
1487 | /* If program file name is not absolute, search our path for it. | |
1488 | Put the name we will really use in TEM. */ | |
1489 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1490 | && !(SCHARS (program) > 1 | |
1491 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1492 | { | |
1493 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1494 | ||
1495 | tem = Qnil; | |
1496 | GCPRO4 (name, program, buffer, current_dir); | |
1497 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1498 | UNGCPRO; | |
1499 | if (NILP (tem)) | |
1500 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1501 | tem = Fexpand_file_name (tem, Qnil); | |
1502 | } | |
1503 | else | |
1504 | { | |
1505 | if (!NILP (Ffile_directory_p (program))) | |
1506 | error ("Specified program for new process is a directory"); | |
1507 | tem = program; | |
1508 | } | |
ed30cf85 | 1509 | |
850d0752 NR |
1510 | /* If program file name starts with /: for quoting a magic name, |
1511 | discard that. */ | |
1512 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1513 | && SREF (tem, 1) == ':') | |
1514 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1515 | |
77bf07e1 | 1516 | { |
fcaf8878 | 1517 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1518 | struct gcpro gcpro1; |
1519 | GCPRO1 (tem); | |
a4a37e65 | 1520 | |
850d0752 NR |
1521 | /* Encode the file name and put it in NEW_ARGV. |
1522 | That's where the child will use it to execute the program. */ | |
1523 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1524 | |
850d0752 NR |
1525 | /* Here we encode arguments by the coding system used for sending |
1526 | data to the process. We don't support using different coding | |
1527 | systems for encoding arguments and for encoding data sent to the | |
1528 | process. */ | |
77bf07e1 | 1529 | |
850d0752 NR |
1530 | for (i = 3; i < nargs; i++) |
1531 | { | |
1532 | tem = Fcons (args[i], tem); | |
1533 | CHECK_STRING (XCAR (tem)); | |
1534 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1535 | { |
1536 | if (NILP (arg_encoding)) | |
1537 | arg_encoding = (complement_process_encoding_system | |
4d2b044c | 1538 | (XPROCESS (proc)->encode_coding_system)); |
fcaf8878 KH |
1539 | XSETCAR (tem, |
1540 | code_convert_string_norecord | |
1541 | (XCAR (tem), arg_encoding, 1)); | |
1542 | } | |
850d0752 | 1543 | } |
a4a37e65 | 1544 | |
850d0752 NR |
1545 | UNGCPRO; |
1546 | } | |
0fa1789e | 1547 | |
850d0752 NR |
1548 | /* Now that everything is encoded we can collect the strings into |
1549 | NEW_ARGV. */ | |
38182d90 | 1550 | new_argv = alloca ((nargs - 1) * sizeof *new_argv); |
850d0752 | 1551 | new_argv[nargs - 2] = 0; |
52a1b894 | 1552 | |
c5101a77 | 1553 | for (i = nargs - 2; i-- != 0; ) |
850d0752 NR |
1554 | { |
1555 | new_argv[i] = SDATA (XCAR (tem)); | |
1556 | tem = XCDR (tem); | |
1557 | } | |
1558 | ||
1559 | create_process (proc, (char **) new_argv, current_dir); | |
1560 | } | |
1561 | else | |
1562 | create_pty (proc); | |
d0d6b7c5 | 1563 | |
b0310da4 | 1564 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1565 | } |
1566 | ||
b0310da4 | 1567 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1568 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1569 | an error and the process wasn't started successfully, so we should |
1570 | remove it from the process list. */ | |
1571 | static Lisp_Object | |
d3da34e0 | 1572 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1573 | { |
bcd69aea | 1574 | if (!PROCESSP (proc)) |
1088b922 | 1575 | emacs_abort (); |
b0310da4 | 1576 | |
2bf26180 GM |
1577 | /* Was PROC started successfully? |
1578 | -2 is used for a pty with no process, eg for gdb. */ | |
1579 | if (XPROCESS (proc)->pid <= 0 && XPROCESS (proc)->pid != -2) | |
b0310da4 JB |
1580 | remove_process (proc); |
1581 | ||
1582 | return Qnil; | |
1583 | } | |
1584 | ||
ff6daed3 | 1585 | static void |
d3da34e0 | 1586 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1587 | { |
30904ab7 | 1588 | /* Nothing to do. */ |
d0d6b7c5 JB |
1589 | } |
1590 | ||
30904ab7 | 1591 | |
40ccffa6 | 1592 | static void |
d3da34e0 | 1593 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1594 | { |
29ed4d51 CY |
1595 | int inchannel, outchannel; |
1596 | pid_t pid; | |
d0d6b7c5 | 1597 | int sv[2]; |
2c4df143 YM |
1598 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1599 | int wait_child_setup[2]; | |
1600 | #endif | |
eeceac93 | 1601 | #ifdef SIGCHLD |
4d7e6e51 | 1602 | sigset_t blocked; |
0dc70c33 | 1603 | #endif |
eeceac93 | 1604 | /* Use volatile to protect variables from being clobbered by vfork. */ |
ecd1f654 KH |
1605 | volatile int forkin, forkout; |
1606 | volatile int pty_flag = 0; | |
4d7e6e51 PE |
1607 | volatile Lisp_Object lisp_pty_name = Qnil; |
1608 | volatile Lisp_Object encoded_current_dir; | |
1609 | #if HAVE_WORKING_VFORK | |
1610 | char **volatile save_environ; | |
1611 | #endif | |
d0d6b7c5 | 1612 | |
d0d6b7c5 JB |
1613 | inchannel = outchannel = -1; |
1614 | ||
1615 | #ifdef HAVE_PTYS | |
fe45da4e | 1616 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1617 | outchannel = inchannel = allocate_pty (); |
1618 | ||
d0d6b7c5 JB |
1619 | if (inchannel >= 0) |
1620 | { | |
2af70a0c RS |
1621 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1622 | /* On most USG systems it does not work to open the pty's tty here, | |
1623 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1624 | #ifdef O_NOCTTY |
1625 | /* Don't let this terminal become our controlling terminal | |
1626 | (in case we don't have one). */ | |
68c45bf0 | 1627 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1628 | #else |
68c45bf0 | 1629 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1630 | #endif |
1631 | if (forkin < 0) | |
1632 | report_file_error ("Opening pty", Qnil); | |
1633 | #else | |
1634 | forkin = forkout = -1; | |
2af70a0c | 1635 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 | 1636 | pty_flag = 1; |
4d7e6e51 | 1637 | lisp_pty_name = build_string (pty_name); |
d0d6b7c5 JB |
1638 | } |
1639 | else | |
1640 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1641 | { |
fc14013c KH |
1642 | int tem; |
1643 | tem = pipe (sv); | |
1644 | if (tem < 0) | |
1645 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1646 | inchannel = sv[0]; |
1647 | forkout = sv[1]; | |
fc14013c KH |
1648 | tem = pipe (sv); |
1649 | if (tem < 0) | |
1650 | { | |
68c45bf0 PE |
1651 | emacs_close (inchannel); |
1652 | emacs_close (forkout); | |
fc14013c KH |
1653 | report_file_error ("Creating pipe", Qnil); |
1654 | } | |
d0d6b7c5 JB |
1655 | outchannel = sv[1]; |
1656 | forkin = sv[0]; | |
1657 | } | |
d0d6b7c5 | 1658 | |
2c4df143 YM |
1659 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1660 | { | |
1661 | int tem; | |
1662 | ||
1663 | tem = pipe (wait_child_setup); | |
1664 | if (tem < 0) | |
1665 | report_file_error ("Creating pipe", Qnil); | |
1666 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1667 | if (tem >= 0) | |
1668 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1669 | if (tem < 0) | |
1670 | { | |
1671 | emacs_close (wait_child_setup[0]); | |
1672 | emacs_close (wait_child_setup[1]); | |
1673 | report_file_error ("Setting file descriptor flags", Qnil); | |
1674 | } | |
1675 | } | |
1676 | #endif | |
1677 | ||
d0d6b7c5 JB |
1678 | #ifdef O_NONBLOCK |
1679 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1680 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1681 | #else |
1682 | #ifdef O_NDELAY | |
1683 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1684 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1685 | #endif |
1686 | #endif | |
1687 | ||
1688 | /* Record this as an active process, with its channels. | |
1689 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1690 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1691 | XPROCESS (process)->infd = inchannel; |
1692 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1693 | |
1694 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1695 | It was only used for getting the foreground tty process, so now | |
1696 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1697 | more portable (see USG_SUBTTY_WORKS above). */ | |
1698 | ||
60f0fb11 | 1699 | XPROCESS (process)->pty_flag = pty_flag; |
6a09a33b | 1700 | pset_status (XPROCESS (process), Qrun); |
d0d6b7c5 | 1701 | |
3081bf8d | 1702 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1703 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1704 | if (inchannel > max_process_desc) |
1705 | max_process_desc = inchannel; | |
1706 | ||
20ef56db | 1707 | /* Until we store the proper pid, enable the SIGCHLD handler |
d0d6b7c5 JB |
1708 | to recognize an unknown pid as standing for this process. |
1709 | It is very important not to let this `marker' value stay | |
1710 | in the table after this function has returned; if it does | |
1711 | it might cause call-process to hang and subsequent asynchronous | |
1712 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1713 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1714 | |
5cf2b69b KH |
1715 | /* This must be called after the above line because it may signal an |
1716 | error. */ | |
1717 | setup_process_coding_systems (process); | |
1718 | ||
4d7e6e51 | 1719 | encoded_current_dir = ENCODE_FILE (current_dir); |
177c0ea7 | 1720 | |
4d7e6e51 PE |
1721 | block_input (); |
1722 | ||
1723 | #ifdef SIGCHLD | |
1724 | /* Block SIGCHLD until we have a chance to store the new fork's | |
1725 | pid in its process structure. */ | |
1726 | sigemptyset (&blocked); | |
1727 | sigaddset (&blocked, SIGCHLD); | |
1728 | pthread_sigmask (SIG_BLOCK, &blocked, 0); | |
1729 | #endif | |
1730 | ||
1731 | #if HAVE_WORKING_VFORK | |
1732 | /* child_setup must clobber environ on systems with true vfork. | |
1733 | Protect it from permanent change. */ | |
1734 | save_environ = environ; | |
1735 | #endif | |
a932f187 | 1736 | |
e98d950b | 1737 | #ifndef WINDOWSNT |
4d7e6e51 PE |
1738 | pid = vfork (); |
1739 | if (pid == 0) | |
e98d950b | 1740 | #endif /* not WINDOWSNT */ |
4d7e6e51 PE |
1741 | { |
1742 | int xforkin = forkin; | |
1743 | int xforkout = forkout; | |
d0d6b7c5 | 1744 | |
4d7e6e51 | 1745 | /* Make the pty be the controlling terminal of the process. */ |
d0d6b7c5 | 1746 | #ifdef HAVE_PTYS |
4d7e6e51 | 1747 | /* First, disconnect its current controlling terminal. */ |
d0d6b7c5 | 1748 | #ifdef HAVE_SETSID |
4d7e6e51 PE |
1749 | /* We tried doing setsid only if pty_flag, but it caused |
1750 | process_set_signal to fail on SGI when using a pipe. */ | |
1751 | setsid (); | |
1752 | /* Make the pty's terminal the controlling terminal. */ | |
1753 | if (pty_flag && xforkin >= 0) | |
1754 | { | |
39e9ebcd | 1755 | #ifdef TIOCSCTTY |
4d7e6e51 PE |
1756 | /* We ignore the return value |
1757 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1758 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1759 | #endif |
4d7e6e51 | 1760 | } |
d0d6b7c5 | 1761 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1762 | #ifdef USG |
4d7e6e51 PE |
1763 | /* It's very important to call setpgrp here and no time |
1764 | afterwards. Otherwise, we lose our controlling tty which | |
1765 | is set when we open the pty. */ | |
1766 | setpgrp (); | |
d0d6b7c5 JB |
1767 | #endif /* USG */ |
1768 | #endif /* not HAVE_SETSID */ | |
a7ebc409 | 1769 | #if defined (LDISC1) |
4d7e6e51 PE |
1770 | if (pty_flag && xforkin >= 0) |
1771 | { | |
1772 | struct termios t; | |
1773 | tcgetattr (xforkin, &t); | |
1774 | t.c_lflag = LDISC1; | |
1775 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
1776 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); | |
1777 | } | |
9bcf8ec6 | 1778 | #else |
aafadd9f | 1779 | #if defined (NTTYDISC) && defined (TIOCSETD) |
4d7e6e51 PE |
1780 | if (pty_flag && xforkin >= 0) |
1781 | { | |
1782 | /* Use new line discipline. */ | |
1783 | int ldisc = NTTYDISC; | |
1784 | ioctl (xforkin, TIOCSETD, &ldisc); | |
1785 | } | |
000ab717 | 1786 | #endif |
9bcf8ec6 | 1787 | #endif |
177c0ea7 | 1788 | #ifdef TIOCNOTTY |
4d7e6e51 PE |
1789 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1790 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1791 | if (pty_flag) | |
1792 | { | |
1793 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? | |
1794 | I can't test it since I don't have 4.3. */ | |
1795 | int j = emacs_open ("/dev/tty", O_RDWR, 0); | |
1796 | if (j >= 0) | |
1797 | { | |
1798 | ioctl (j, TIOCNOTTY, 0); | |
1799 | emacs_close (j); | |
1800 | } | |
5a570e37 | 1801 | #ifndef USG |
4d7e6e51 PE |
1802 | /* In order to get a controlling terminal on some versions |
1803 | of BSD, it is necessary to put the process in pgrp 0 | |
1804 | before it opens the terminal. */ | |
99c1aeca | 1805 | #ifdef HAVE_SETPGID |
4d7e6e51 | 1806 | setpgid (0, 0); |
3ea1d291 | 1807 | #else |
4d7e6e51 | 1808 | setpgrp (0, 0); |
3ea1d291 | 1809 | #endif |
d0d6b7c5 | 1810 | #endif |
4d7e6e51 | 1811 | } |
d0d6b7c5 JB |
1812 | #endif /* TIOCNOTTY */ |
1813 | ||
e39a993c | 1814 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1815 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1816 | conditional on TIOCSPGRP, |
1817 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1818 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1819 | that system does seem to need this code, even though | |
1820 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1821 | /* Now close the pty (if we had it open) and reopen it. |
1822 | This makes the pty the controlling terminal of the subprocess. */ | |
4d7e6e51 PE |
1823 | if (pty_flag) |
1824 | { | |
99e3d726 | 1825 | |
4d7e6e51 PE |
1826 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1827 | would work? */ | |
1828 | if (xforkin >= 0) | |
1829 | emacs_close (xforkin); | |
1830 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1831 | |
4d7e6e51 PE |
1832 | if (xforkin < 0) |
1833 | { | |
1834 | emacs_write (1, "Couldn't open the pty terminal ", 31); | |
1835 | emacs_write (1, pty_name, strlen (pty_name)); | |
1836 | emacs_write (1, "\n", 1); | |
1837 | _exit (1); | |
1838 | } | |
4aa54ba8 | 1839 | |
4d7e6e51 | 1840 | } |
e39a993c | 1841 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1842 | |
d0d6b7c5 | 1843 | #ifdef SETUP_SLAVE_PTY |
4d7e6e51 PE |
1844 | if (pty_flag) |
1845 | { | |
1846 | SETUP_SLAVE_PTY; | |
1847 | } | |
d0d6b7c5 JB |
1848 | #endif /* SETUP_SLAVE_PTY */ |
1849 | #ifdef AIX | |
4d7e6e51 PE |
1850 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. |
1851 | Now reenable it in the child, so it will die when we want it to. */ | |
1852 | if (pty_flag) | |
1853 | signal (SIGHUP, SIG_DFL); | |
d0d6b7c5 JB |
1854 | #endif |
1855 | #endif /* HAVE_PTYS */ | |
1856 | ||
4d7e6e51 PE |
1857 | signal (SIGINT, SIG_DFL); |
1858 | signal (SIGQUIT, SIG_DFL); | |
1859 | ||
1860 | /* Emacs ignores SIGPIPE, but the child should not. */ | |
1861 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 | 1862 | |
eeceac93 | 1863 | #ifdef SIGCHLD |
0dc70c33 | 1864 | /* Stop blocking signals in the child. */ |
4d7e6e51 | 1865 | pthread_sigmask (SIG_SETMASK, &empty_mask, 0); |
eeceac93 | 1866 | #endif |
5e7e1da2 | 1867 | |
4d7e6e51 PE |
1868 | if (pty_flag) |
1869 | child_setup_tty (xforkout); | |
e98d950b | 1870 | #ifdef WINDOWSNT |
4d7e6e51 PE |
1871 | pid = child_setup (xforkin, xforkout, xforkout, |
1872 | new_argv, 1, encoded_current_dir); | |
177c0ea7 | 1873 | #else /* not WINDOWSNT */ |
2c4df143 | 1874 | #ifdef FD_CLOEXEC |
4d7e6e51 | 1875 | emacs_close (wait_child_setup[0]); |
2c4df143 | 1876 | #endif |
4d7e6e51 PE |
1877 | child_setup (xforkin, xforkout, xforkout, |
1878 | new_argv, 1, encoded_current_dir); | |
e98d950b | 1879 | #endif /* not WINDOWSNT */ |
4d7e6e51 | 1880 | } |
d0d6b7c5 | 1881 | |
4d7e6e51 PE |
1882 | /* Back in the parent process. */ |
1883 | ||
1884 | #if HAVE_WORKING_VFORK | |
1885 | environ = save_environ; | |
1886 | #endif | |
1887 | ||
1888 | XPROCESS (process)->pid = pid; | |
d0d6b7c5 | 1889 | |
4d7e6e51 PE |
1890 | /* Stop blocking signals in the parent. */ |
1891 | #ifdef SIGCHLD | |
1892 | pthread_sigmask (SIG_SETMASK, &empty_mask, 0); | |
1893 | #endif | |
1894 | unblock_input (); | |
ececcbec | 1895 | |
d0d6b7c5 | 1896 | if (pid < 0) |
6311cf58 RS |
1897 | { |
1898 | if (forkin >= 0) | |
68c45bf0 | 1899 | emacs_close (forkin); |
6311cf58 | 1900 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1901 | emacs_close (forkout); |
6311cf58 | 1902 | } |
4a127b3b KH |
1903 | else |
1904 | { | |
1905 | /* vfork succeeded. */ | |
d0d6b7c5 | 1906 | |
e98d950b | 1907 | #ifdef WINDOWSNT |
4a127b3b | 1908 | register_child (pid, inchannel); |
e98d950b RS |
1909 | #endif /* WINDOWSNT */ |
1910 | ||
4a127b3b KH |
1911 | /* If the subfork execv fails, and it exits, |
1912 | this close hangs. I don't know why. | |
1913 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
1914 | { |
1915 | struct atimer *timer; | |
e9a9ae03 | 1916 | EMACS_TIME offset = make_emacs_time (1, 0); |
177c0ea7 | 1917 | |
30904ab7 | 1918 | stop_polling (); |
30904ab7 | 1919 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); |
177c0ea7 | 1920 | |
30904ab7 GM |
1921 | if (forkin >= 0) |
1922 | emacs_close (forkin); | |
1923 | ||
1924 | cancel_atimer (timer); | |
1925 | start_polling (); | |
1926 | } | |
177c0ea7 | 1927 | |
4a127b3b | 1928 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1929 | emacs_close (forkout); |
d0d6b7c5 | 1930 | |
4d7e6e51 | 1931 | pset_tty_name (XPROCESS (process), lisp_pty_name); |
2c4df143 YM |
1932 | |
1933 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
1934 | /* Wait for child_setup to complete in case that vfork is | |
1935 | actually defined as fork. The descriptor wait_child_setup[1] | |
1936 | of a pipe is closed at the child side either by close-on-exec | |
1937 | on successful execvp or the _exit call in child_setup. */ | |
1938 | { | |
1939 | char dummy; | |
1940 | ||
1941 | emacs_close (wait_child_setup[1]); | |
1942 | emacs_read (wait_child_setup[0], &dummy, 1); | |
1943 | emacs_close (wait_child_setup[0]); | |
1944 | } | |
1945 | #endif | |
4a127b3b | 1946 | } |
3b9a3dfa | 1947 | |
4a127b3b KH |
1948 | /* Now generate the error if vfork failed. */ |
1949 | if (pid < 0) | |
1950 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 1951 | } |
d0d6b7c5 | 1952 | |
850d0752 | 1953 | void |
d3da34e0 | 1954 | create_pty (Lisp_Object process) |
850d0752 NR |
1955 | { |
1956 | int inchannel, outchannel; | |
afd4052b | 1957 | int pty_flag = 0; |
850d0752 NR |
1958 | |
1959 | inchannel = outchannel = -1; | |
1960 | ||
1961 | #ifdef HAVE_PTYS | |
1962 | if (!NILP (Vprocess_connection_type)) | |
1963 | outchannel = inchannel = allocate_pty (); | |
1964 | ||
1965 | if (inchannel >= 0) | |
1966 | { | |
1967 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
1968 | /* On most USG systems it does not work to open the pty's tty here, | |
1969 | then close it and reopen it in the child. */ | |
1970 | #ifdef O_NOCTTY | |
1971 | /* Don't let this terminal become our controlling terminal | |
1972 | (in case we don't have one). */ | |
afd4052b | 1973 | int forkout = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
850d0752 | 1974 | #else |
afd4052b | 1975 | int forkout = emacs_open (pty_name, O_RDWR, 0); |
850d0752 | 1976 | #endif |
aba7731a | 1977 | if (forkout < 0) |
850d0752 | 1978 | report_file_error ("Opening pty", Qnil); |
019d2c4c | 1979 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
1980 | /* In the case that vfork is defined as fork, the parent process |
1981 | (Emacs) may send some data before the child process completes | |
1982 | tty options setup. So we setup tty before forking. */ | |
1983 | child_setup_tty (forkout); | |
019d2c4c | 1984 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
1985 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
1986 | pty_flag = 1; | |
1987 | } | |
1988 | #endif /* HAVE_PTYS */ | |
1989 | ||
1990 | #ifdef O_NONBLOCK | |
1991 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
1992 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
1993 | #else | |
1994 | #ifdef O_NDELAY | |
1995 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
1996 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
1997 | #endif | |
1998 | #endif | |
1999 | ||
2000 | /* Record this as an active process, with its channels. | |
2001 | As a result, child_setup will close Emacs's side of the pipes. */ | |
2002 | chan_process[inchannel] = process; | |
2003 | XPROCESS (process)->infd = inchannel; | |
2004 | XPROCESS (process)->outfd = outchannel; | |
2005 | ||
2006 | /* Previously we recorded the tty descriptor used in the subprocess. | |
2007 | It was only used for getting the foreground tty process, so now | |
2008 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
2009 | more portable (see USG_SUBTTY_WORKS above). */ | |
2010 | ||
2011 | XPROCESS (process)->pty_flag = pty_flag; | |
6a09a33b | 2012 | pset_status (XPROCESS (process), Qrun); |
850d0752 NR |
2013 | setup_process_coding_systems (process); |
2014 | ||
2015 | FD_SET (inchannel, &input_wait_mask); | |
2016 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
2017 | if (inchannel > max_process_desc) | |
2018 | max_process_desc = inchannel; | |
2019 | ||
2020 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
2021 | #ifdef HAVE_PTYS |
2022 | if (pty_flag) | |
6a09a33b | 2023 | pset_tty_name (XPROCESS (process), build_string (pty_name)); |
8b9fc636 EZ |
2024 | else |
2025 | #endif | |
6a09a33b | 2026 | pset_tty_name (XPROCESS (process), Qnil); |
850d0752 NR |
2027 | } |
2028 | ||
e690ca94 | 2029 | \f |
e690ca94 KS |
2030 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2031 | The address family of sa is not included in the result. */ | |
2032 | ||
2033 | static Lisp_Object | |
d3da34e0 | 2034 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
2035 | { |
2036 | Lisp_Object address; | |
2037 | int i; | |
2038 | unsigned char *cp; | |
2039 | register struct Lisp_Vector *p; | |
2040 | ||
63136da6 AS |
2041 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2042 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2043 | a zero length name. */ | |
89887d67 | 2044 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2045 | return empty_unibyte_string; |
63136da6 | 2046 | |
e690ca94 KS |
2047 | switch (sa->sa_family) |
2048 | { | |
2049 | case AF_INET: | |
2050 | { | |
2051 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2052 | len = sizeof (sin->sin_addr) + 1; | |
2053 | address = Fmake_vector (make_number (len), Qnil); | |
2054 | p = XVECTOR (address); | |
2055 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2056 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2057 | break; |
2058 | } | |
e1652a86 KS |
2059 | #ifdef AF_INET6 |
2060 | case AF_INET6: | |
2061 | { | |
2062 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2063 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2064 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2065 | address = Fmake_vector (make_number (len), Qnil); | |
2066 | p = XVECTOR (address); | |
2067 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2068 | for (i = 0; i < len; i++) | |
2069 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2070 | return address; | |
2071 | } | |
2072 | #endif | |
e690ca94 KS |
2073 | #ifdef HAVE_LOCAL_SOCKETS |
2074 | case AF_LOCAL: | |
2075 | { | |
fb23673a EZ |
2076 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2077 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2078 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2079 | break; |
fb23673a | 2080 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2081 | } |
2082 | #endif | |
2083 | default: | |
89887d67 | 2084 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2085 | address = Fcons (make_number (sa->sa_family), |
2086 | Fmake_vector (make_number (len), Qnil)); | |
2087 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2088 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2089 | break; |
2090 | } | |
2091 | ||
2092 | i = 0; | |
2093 | while (i < len) | |
2094 | p->contents[i++] = make_number (*cp++); | |
2095 | ||
2096 | return address; | |
2097 | } | |
2098 | ||
2099 | ||
2100 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2101 | ||
2102 | static int | |
d3da34e0 | 2103 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2104 | { |
2105 | register struct Lisp_Vector *p; | |
2106 | ||
2107 | if (VECTORP (address)) | |
2108 | { | |
2109 | p = XVECTOR (address); | |
eab3844f | 2110 | if (p->header.size == 5) |
e690ca94 KS |
2111 | { |
2112 | *familyp = AF_INET; | |
2113 | return sizeof (struct sockaddr_in); | |
2114 | } | |
e1652a86 | 2115 | #ifdef AF_INET6 |
eab3844f | 2116 | else if (p->header.size == 9) |
e1652a86 KS |
2117 | { |
2118 | *familyp = AF_INET6; | |
2119 | return sizeof (struct sockaddr_in6); | |
2120 | } | |
2121 | #endif | |
e690ca94 KS |
2122 | } |
2123 | #ifdef HAVE_LOCAL_SOCKETS | |
2124 | else if (STRINGP (address)) | |
2125 | { | |
2126 | *familyp = AF_LOCAL; | |
2127 | return sizeof (struct sockaddr_un); | |
2128 | } | |
2129 | #endif | |
d311d28c PE |
2130 | else if (CONSP (address) && TYPE_RANGED_INTEGERP (int, XCAR (address)) |
2131 | && VECTORP (XCDR (address))) | |
e690ca94 KS |
2132 | { |
2133 | struct sockaddr *sa; | |
2134 | *familyp = XINT (XCAR (address)); | |
2135 | p = XVECTOR (XCDR (address)); | |
eab3844f | 2136 | return p->header.size + sizeof (sa->sa_family); |
e690ca94 KS |
2137 | } |
2138 | return 0; | |
2139 | } | |
2140 | ||
2141 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2142 | |
2143 | The address format has been basically validated by | |
2144 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2145 | it could have come from user data. So if FAMILY is not valid, | |
2146 | we return after zeroing *SA. */ | |
e690ca94 KS |
2147 | |
2148 | static void | |
d3da34e0 | 2149 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2150 | { |
2151 | register struct Lisp_Vector *p; | |
34967d0f | 2152 | register unsigned char *cp = NULL; |
e690ca94 | 2153 | register int i; |
d311d28c | 2154 | EMACS_INT hostport; |
e690ca94 | 2155 | |
72af86bd | 2156 | memset (sa, 0, len); |
e690ca94 KS |
2157 | |
2158 | if (VECTORP (address)) | |
2159 | { | |
2160 | p = XVECTOR (address); | |
2161 | if (family == AF_INET) | |
2162 | { | |
2163 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2164 | len = sizeof (sin->sin_addr) + 1; | |
d311d28c PE |
2165 | hostport = XINT (p->contents[--len]); |
2166 | sin->sin_port = htons (hostport); | |
e690ca94 | 2167 | cp = (unsigned char *)&sin->sin_addr; |
9d1a8e5d | 2168 | sa->sa_family = family; |
e690ca94 | 2169 | } |
e1652a86 KS |
2170 | #ifdef AF_INET6 |
2171 | else if (family == AF_INET6) | |
2172 | { | |
2173 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2174 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2175 | len = sizeof (sin6->sin6_addr) + 1; | |
d311d28c PE |
2176 | hostport = XINT (p->contents[--len]); |
2177 | sin6->sin6_port = htons (hostport); | |
e1652a86 KS |
2178 | for (i = 0; i < len; i++) |
2179 | if (INTEGERP (p->contents[i])) | |
2180 | { | |
2181 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2182 | ip6[i] = ntohs (j); | |
2183 | } | |
9d1a8e5d | 2184 | sa->sa_family = family; |
0eb7675e | 2185 | return; |
e1652a86 KS |
2186 | } |
2187 | #endif | |
0eb7675e AS |
2188 | else |
2189 | return; | |
e690ca94 KS |
2190 | } |
2191 | else if (STRINGP (address)) | |
2192 | { | |
2193 | #ifdef HAVE_LOCAL_SOCKETS | |
2194 | if (family == AF_LOCAL) | |
2195 | { | |
fb23673a | 2196 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2197 | cp = SDATA (address); |
fb23673a EZ |
2198 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2199 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2200 | sa->sa_family = family; |
e690ca94 KS |
2201 | } |
2202 | #endif | |
2203 | return; | |
2204 | } | |
2205 | else | |
2206 | { | |
2207 | p = XVECTOR (XCDR (address)); | |
2208 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2209 | } | |
2210 | ||
2211 | for (i = 0; i < len; i++) | |
2212 | if (INTEGERP (p->contents[i])) | |
2213 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2214 | } | |
2215 | ||
2216 | #ifdef DATAGRAM_SOCKETS | |
2217 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2218 | 1, 1, 0, | |
2219 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2220 | (Lisp_Object process) |
e690ca94 KS |
2221 | { |
2222 | int channel; | |
2223 | ||
2224 | CHECK_PROCESS (process); | |
2225 | ||
2226 | if (!DATAGRAM_CONN_P (process)) | |
2227 | return Qnil; | |
2228 | ||
60f0fb11 | 2229 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2230 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2231 | datagram_address[channel].len); | |
2232 | } | |
2233 | ||
2234 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2235 | 2, 2, 0, | |
2236 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2237 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2238 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2239 | { |
2240 | int channel; | |
2241 | int family, len; | |
2242 | ||
2243 | CHECK_PROCESS (process); | |
2244 | ||
2245 | if (!DATAGRAM_CONN_P (process)) | |
2246 | return Qnil; | |
2247 | ||
60f0fb11 | 2248 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2249 | |
2250 | len = get_lisp_to_sockaddr_size (address, &family); | |
2251 | if (datagram_address[channel].len != len) | |
2252 | return Qnil; | |
2253 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2254 | return address; | |
2255 | } | |
2256 | #endif | |
2257 | \f | |
2258 | ||
5e2327cf | 2259 | static const struct socket_options { |
e690ca94 | 2260 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2261 | name without SO_ prefix. */ |
fce70521 | 2262 | const char *name; |
e690ca94 KS |
2263 | /* Option level SOL_... */ |
2264 | int optlevel; | |
2265 | /* Option number SO_... */ | |
2266 | int optnum; | |
6b61353c KH |
2267 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2268 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2269 | } socket_options[] = |
2270 | { | |
2271 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2272 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2273 | #endif |
2274 | #ifdef SO_BROADCAST | |
6b61353c | 2275 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2276 | #endif |
2277 | #ifdef SO_DONTROUTE | |
6b61353c | 2278 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2279 | #endif |
2280 | #ifdef SO_KEEPALIVE | |
6b61353c | 2281 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2282 | #endif |
2283 | #ifdef SO_LINGER | |
6b61353c | 2284 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2285 | #endif |
2286 | #ifdef SO_OOBINLINE | |
6b61353c | 2287 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2288 | #endif |
2289 | #ifdef SO_PRIORITY | |
6b61353c | 2290 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2291 | #endif |
2292 | #ifdef SO_REUSEADDR | |
6b61353c | 2293 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2294 | #endif |
6b61353c | 2295 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2296 | }; |
2297 | ||
6b61353c | 2298 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2299 | |
6b61353c KH |
2300 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2301 | Signals an error if setting a known option fails. | |
2302 | */ | |
e690ca94 KS |
2303 | |
2304 | static int | |
d3da34e0 | 2305 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2306 | { |
6b61353c | 2307 | char *name; |
5e2327cf | 2308 | const struct socket_options *sopt; |
6b61353c | 2309 | int ret = 0; |
e690ca94 | 2310 | |
6b61353c | 2311 | CHECK_SYMBOL (opt); |
e690ca94 | 2312 | |
51b59d79 | 2313 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2314 | for (sopt = socket_options; sopt->name; sopt++) |
2315 | if (strcmp (name, sopt->name) == 0) | |
2316 | break; | |
e690ca94 | 2317 | |
6b61353c KH |
2318 | switch (sopt->opttype) |
2319 | { | |
2320 | case SOPT_BOOL: | |
2321 | { | |
2322 | int optval; | |
2323 | optval = NILP (val) ? 0 : 1; | |
2324 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2325 | &optval, sizeof (optval)); | |
2326 | break; | |
2327 | } | |
e690ca94 | 2328 | |
6b61353c KH |
2329 | case SOPT_INT: |
2330 | { | |
2331 | int optval; | |
d311d28c | 2332 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2333 | optval = XINT (val); |
2334 | else | |
2335 | error ("Bad option value for %s", name); | |
2336 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2337 | &optval, sizeof (optval)); | |
2338 | break; | |
2339 | } | |
e690ca94 | 2340 | |
6b61353c KH |
2341 | #ifdef SO_BINDTODEVICE |
2342 | case SOPT_IFNAME: | |
2343 | { | |
2344 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2345 | |
6b61353c KH |
2346 | /* This is broken, at least in the Linux 2.4 kernel. |
2347 | To unbind, the arg must be a zero integer, not the empty string. | |
2348 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2349 | memset (devname, 0, sizeof devname); |
6b61353c | 2350 | if (STRINGP (val)) |
e690ca94 | 2351 | { |
51b59d79 | 2352 | char *arg = SSDATA (val); |
6b61353c | 2353 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2354 | memcpy (devname, arg, len); |
e690ca94 | 2355 | } |
6b61353c KH |
2356 | else if (!NILP (val)) |
2357 | error ("Bad option value for %s", name); | |
2358 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2359 | devname, IFNAMSIZ); | |
2360 | break; | |
2361 | } | |
2362 | #endif | |
e690ca94 | 2363 | |
177c0ea7 | 2364 | #ifdef SO_LINGER |
6b61353c KH |
2365 | case SOPT_LINGER: |
2366 | { | |
2367 | struct linger linger; | |
e690ca94 | 2368 | |
6b61353c KH |
2369 | linger.l_onoff = 1; |
2370 | linger.l_linger = 0; | |
d311d28c | 2371 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2372 | linger.l_linger = XINT (val); |
2373 | else | |
2374 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2375 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2376 | &linger, sizeof (linger)); | |
2377 | break; | |
2378 | } | |
e690ca94 | 2379 | #endif |
6b61353c KH |
2380 | |
2381 | default: | |
2382 | return 0; | |
e690ca94 | 2383 | } |
6b61353c KH |
2384 | |
2385 | if (ret < 0) | |
2386 | report_file_error ("Cannot set network option", | |
2387 | Fcons (opt, Fcons (val, Qnil))); | |
2388 | return (1 << sopt->optbit); | |
e690ca94 KS |
2389 | } |
2390 | ||
6b61353c KH |
2391 | |
2392 | DEFUN ("set-network-process-option", | |
2393 | Fset_network_process_option, Sset_network_process_option, | |
2394 | 3, 4, 0, | |
2395 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2396 | See `make-network-process' for a list of options and values. | |
2397 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2398 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2399 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2400 | { |
6b61353c KH |
2401 | int s; |
2402 | struct Lisp_Process *p; | |
e690ca94 | 2403 | |
e690ca94 | 2404 | CHECK_PROCESS (process); |
6b61353c KH |
2405 | p = XPROCESS (process); |
2406 | if (!NETCONN1_P (p)) | |
2407 | error ("Process is not a network process"); | |
2408 | ||
60f0fb11 | 2409 | s = p->infd; |
6b61353c KH |
2410 | if (s < 0) |
2411 | error ("Process is not running"); | |
2412 | ||
2413 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2414 | { |
6a09a33b | 2415 | pset_childp (p, Fplist_put (p->childp, option, value)); |
6b61353c | 2416 | return Qt; |
e690ca94 | 2417 | } |
6b61353c KH |
2418 | |
2419 | if (NILP (no_error)) | |
2420 | error ("Unknown or unsupported option"); | |
2421 | ||
2422 | return Qnil; | |
e690ca94 | 2423 | } |
6b61353c | 2424 | |
e690ca94 | 2425 | \f |
d888760c GM |
2426 | DEFUN ("serial-process-configure", |
2427 | Fserial_process_configure, | |
2428 | Sserial_process_configure, | |
2429 | 0, MANY, 0, | |
2430 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2431 | ||
2432 | Arguments are specified as keyword/argument pairs. Attributes that | |
2433 | are not given are re-initialized from the process's current | |
2434 | configuration (available via the function `process-contact') or set to | |
2435 | reasonable default values. The following arguments are defined: | |
2436 | ||
2437 | :process PROCESS | |
2438 | :name NAME | |
2439 | :buffer BUFFER | |
2440 | :port PORT | |
2441 | -- Any of these arguments can be given to identify the process that is | |
2442 | to be configured. If none of these arguments is given, the current | |
2443 | buffer's process is used. | |
2444 | ||
2445 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2446 | second, also called baud rate. Any value can be given for SPEED, but | |
2447 | most serial ports work only at a few defined values between 1200 and | |
2448 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2449 | serial port is not configured any further, i.e., all other arguments | |
2450 | are ignored. This may be useful for special serial ports such as | |
2451 | Bluetooth-to-serial converters which can only be configured through AT | |
2452 | commands. A value of nil for SPEED can be used only when passed | |
2453 | through `make-serial-process' or `serial-term'. | |
2454 | ||
2455 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2456 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2457 | ||
2458 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2459 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2460 | PARITY is not given, no parity is used. | |
2461 | ||
2462 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2463 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2464 | is not given or nil, 1 stopbit is used. | |
2465 | ||
2466 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2467 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2468 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2469 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2470 | flowcontrol is used. | |
2471 | ||
2472 | `serial-process-configure' is called by `make-serial-process' for the | |
2473 | initial configuration of the serial port. | |
2474 | ||
2475 | Examples: | |
2476 | ||
2477 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2478 | ||
2479 | \(serial-process-configure | |
2480 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2481 | ||
2482 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2483 | ||
2484 | usage: (serial-process-configure &rest ARGS) */) | |
f66c7cf8 | 2485 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2486 | { |
2487 | struct Lisp_Process *p; | |
2488 | Lisp_Object contact = Qnil; | |
2489 | Lisp_Object proc = Qnil; | |
2490 | struct gcpro gcpro1; | |
2491 | ||
2492 | contact = Flist (nargs, args); | |
2493 | GCPRO1 (contact); | |
2494 | ||
2495 | proc = Fplist_get (contact, QCprocess); | |
2496 | if (NILP (proc)) | |
2497 | proc = Fplist_get (contact, QCname); | |
2498 | if (NILP (proc)) | |
2499 | proc = Fplist_get (contact, QCbuffer); | |
2500 | if (NILP (proc)) | |
2501 | proc = Fplist_get (contact, QCport); | |
2502 | proc = get_process (proc); | |
2503 | p = XPROCESS (proc); | |
4d2b044c | 2504 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2505 | error ("Not a serial process"); |
2506 | ||
4d2b044c | 2507 | if (NILP (Fplist_get (p->childp, QCspeed))) |
d888760c GM |
2508 | { |
2509 | UNGCPRO; | |
2510 | return Qnil; | |
2511 | } | |
2512 | ||
2513 | serial_configure (p, contact); | |
2514 | ||
2515 | UNGCPRO; | |
2516 | return Qnil; | |
2517 | } | |
d888760c | 2518 | |
d888760c | 2519 | /* Used by make-serial-process to recover from errors. */ |
b766f867 PE |
2520 | static Lisp_Object |
2521 | make_serial_process_unwind (Lisp_Object proc) | |
d888760c GM |
2522 | { |
2523 | if (!PROCESSP (proc)) | |
1088b922 | 2524 | emacs_abort (); |
d888760c GM |
2525 | remove_process (proc); |
2526 | return Qnil; | |
2527 | } | |
d888760c | 2528 | |
d888760c GM |
2529 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2530 | 0, MANY, 0, | |
2531 | doc: /* Create and return a serial port process. | |
2532 | ||
2533 | In Emacs, serial port connections are represented by process objects, | |
2534 | so input and output work as for subprocesses, and `delete-process' | |
2535 | closes a serial port connection. However, a serial process has no | |
2536 | process id, it cannot be signaled, and the status codes are different | |
2537 | from normal processes. | |
2538 | ||
2539 | `make-serial-process' creates a process and a buffer, on which you | |
2540 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2541 | an interactive terminal. See below for examples. | |
2542 | ||
2543 | Arguments are specified as keyword/argument pairs. The following | |
2544 | arguments are defined: | |
2545 | ||
2546 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2547 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2548 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2549 | the backslashes in strings). | |
2550 | ||
2551 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
4373fd43 | 2552 | which this function calls. |
d888760c GM |
2553 | |
2554 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2555 | the value of PORT is used. | |
2556 | ||
2557 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2558 | with the process. Process output goes at the end of that buffer, | |
2559 | unless you specify an output stream or filter function to handle the | |
2560 | output. If BUFFER is not given, the value of NAME is used. | |
2561 | ||
2562 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2563 | system used for both reading and writing for this process. If CODING | |
2564 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2565 | ENCODING is used for writing. | |
2566 | ||
2567 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2568 | the process is running. If BOOL is not given, query before exiting. | |
2569 | ||
2570 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2571 | In the stopped state, a serial process does not accept incoming data, | |
2572 | but you can send outgoing data. The stopped state is cleared by | |
2573 | `continue-process' and set by `stop-process'. | |
2574 | ||
2575 | :filter FILTER -- Install FILTER as the process filter. | |
2576 | ||
2577 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2578 | ||
2579 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2580 | ||
d888760c GM |
2581 | :bytesize |
2582 | :parity | |
2583 | :stopbits | |
2584 | :flowcontrol | |
4373fd43 GM |
2585 | -- This function calls `serial-process-configure' to handle these |
2586 | arguments. | |
d888760c GM |
2587 | |
2588 | The original argument list, possibly modified by later configuration, | |
2589 | is available via the function `process-contact'. | |
2590 | ||
2591 | Examples: | |
2592 | ||
2593 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2594 | ||
2595 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2596 | ||
2597 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2598 | ||
2599 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2600 | ||
2601 | usage: (make-serial-process &rest ARGS) */) | |
f66c7cf8 | 2602 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2603 | { |
2604 | int fd = -1; | |
2605 | Lisp_Object proc, contact, port; | |
2606 | struct Lisp_Process *p; | |
2607 | struct gcpro gcpro1; | |
2608 | Lisp_Object name, buffer; | |
2609 | Lisp_Object tem, val; | |
d311d28c | 2610 | ptrdiff_t specpdl_count = -1; |
d888760c GM |
2611 | |
2612 | if (nargs == 0) | |
2613 | return Qnil; | |
2614 | ||
2615 | contact = Flist (nargs, args); | |
2616 | GCPRO1 (contact); | |
2617 | ||
2618 | port = Fplist_get (contact, QCport); | |
2619 | if (NILP (port)) | |
2620 | error ("No port specified"); | |
2621 | CHECK_STRING (port); | |
2622 | ||
2623 | if (NILP (Fplist_member (contact, QCspeed))) | |
2624 | error (":speed not specified"); | |
2625 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2626 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2627 | ||
2628 | name = Fplist_get (contact, QCname); | |
2629 | if (NILP (name)) | |
2630 | name = port; | |
2631 | CHECK_STRING (name); | |
2632 | proc = make_process (name); | |
2633 | specpdl_count = SPECPDL_INDEX (); | |
2634 | record_unwind_protect (make_serial_process_unwind, proc); | |
2635 | p = XPROCESS (proc); | |
2636 | ||
51b59d79 | 2637 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2638 | p->infd = fd; |
2639 | p->outfd = fd; | |
2640 | if (fd > max_process_desc) | |
2641 | max_process_desc = fd; | |
2642 | chan_process[fd] = proc; | |
2643 | ||
2644 | buffer = Fplist_get (contact, QCbuffer); | |
2645 | if (NILP (buffer)) | |
2646 | buffer = name; | |
2647 | buffer = Fget_buffer_create (buffer); | |
6a09a33b PE |
2648 | pset_buffer (p, buffer); |
2649 | ||
2650 | pset_childp (p, contact); | |
2651 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
2652 | pset_type (p, Qserial); | |
2653 | pset_sentinel (p, Fplist_get (contact, QCsentinel)); | |
2654 | pset_filter (p, Fplist_get (contact, QCfilter)); | |
2655 | pset_log (p, Qnil); | |
d888760c GM |
2656 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
2657 | p->kill_without_query = 1; | |
2658 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
6a09a33b | 2659 | pset_command (p, Qt); |
d888760c GM |
2660 | p->pty_flag = 0; |
2661 | ||
4d2b044c | 2662 | if (!EQ (p->command, Qt)) |
d888760c GM |
2663 | { |
2664 | FD_SET (fd, &input_wait_mask); | |
2665 | FD_SET (fd, &non_keyboard_wait_mask); | |
2666 | } | |
2667 | ||
2668 | if (BUFFERP (buffer)) | |
2669 | { | |
4d2b044c | 2670 | set_marker_both (p->mark, buffer, |
d888760c GM |
2671 | BUF_ZV (XBUFFER (buffer)), |
2672 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2673 | } | |
2674 | ||
2675 | tem = Fplist_member (contact, QCcoding); | |
2676 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2677 | tem = Qnil; | |
2678 | ||
2679 | val = Qnil; | |
2680 | if (!NILP (tem)) | |
2681 | { | |
2682 | val = XCAR (XCDR (tem)); | |
2683 | if (CONSP (val)) | |
2684 | val = XCAR (val); | |
2685 | } | |
2686 | else if (!NILP (Vcoding_system_for_read)) | |
2687 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2688 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2689 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2690 | val = Qnil; |
6a09a33b | 2691 | pset_decode_coding_system (p, val); |
d888760c GM |
2692 | |
2693 | val = Qnil; | |
2694 | if (!NILP (tem)) | |
2695 | { | |
2696 | val = XCAR (XCDR (tem)); | |
2697 | if (CONSP (val)) | |
2698 | val = XCDR (val); | |
2699 | } | |
2700 | else if (!NILP (Vcoding_system_for_write)) | |
2701 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2702 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2703 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2704 | val = Qnil; |
6a09a33b | 2705 | pset_encode_coding_system (p, val); |
d888760c GM |
2706 | |
2707 | setup_process_coding_systems (proc); | |
6a09a33b | 2708 | pset_decoding_buf (p, empty_unibyte_string); |
d888760c | 2709 | p->decoding_carryover = 0; |
6a09a33b | 2710 | pset_encoding_buf (p, empty_unibyte_string); |
d888760c GM |
2711 | p->inherit_coding_system_flag |
2712 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2713 | ||
ed3751c8 | 2714 | Fserial_process_configure (nargs, args); |
d888760c GM |
2715 | |
2716 | specpdl_ptr = specpdl + specpdl_count; | |
2717 | ||
2718 | UNGCPRO; | |
2719 | return proc; | |
2720 | } | |
d888760c | 2721 | |
e690ca94 KS |
2722 | /* Create a network stream/datagram client/server process. Treated |
2723 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2724 | differences are in status display and process deletion. A network |
2725 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2726 | stop/continue it and deactivate/close it via delete-process */ |
2727 | ||
177c0ea7 JB |
2728 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2729 | 0, MANY, 0, | |
e690ca94 KS |
2730 | doc: /* Create and return a network server or client process. |
2731 | ||
fa9d4315 | 2732 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2733 | input and output work as for subprocesses and `delete-process' closes |
2734 | a network connection. However, a network process has no process id, | |
d22426e1 | 2735 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2736 | processes. |
2737 | ||
2738 | Arguments are specified as keyword/argument pairs. The following | |
2739 | arguments are defined: | |
2740 | ||
2741 | :name NAME -- NAME is name for process. It is modified if necessary | |
2742 | to make it unique. | |
2743 | ||
2744 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2745 | with the process. Process output goes at end of that buffer, unless | |
2746 | you specify an output stream or filter function to handle the output. | |
2747 | BUFFER may be also nil, meaning that this process is not associated | |
2748 | with any buffer. | |
2749 | ||
2750 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2751 | address. The symbol `local' specifies the local host. If specified | |
2752 | for a server process, it must be a valid name or address for the local | |
2753 | host, and only clients connecting to that address will be accepted. | |
2754 | ||
2755 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2756 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2757 | a random port number is selected for the server. (If Emacs was |
2758 | compiled with getaddrinfo, a port number can also be specified as a | |
2759 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2760 | |
9057ff80 | 2761 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2762 | stream type connection, `datagram' creates a datagram type connection, |
2763 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2764 | |
e690ca94 | 2765 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2766 | service specified by HOST and SERVICE. The default (nil) is to use |
2767 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2768 | and port number specified by HOST and SERVICE. Other address families | |
2769 | supported are: | |
e690ca94 | 2770 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2771 | ipv4 -- use IPv4 address family only. |
2772 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2773 | |
2774 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2775 | This parameter is ignored when opening a client process. When specified | |
2776 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2777 | ||
2778 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2779 | connection. This parameter is ignored when opening a stream server | |
2780 | process. For a datagram server process, it specifies the initial | |
2781 | setting of the remote datagram address. When specified for a client | |
2782 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2783 | ||
2784 | The format of ADDRESS depends on the address family: | |
2785 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2786 | corresponding to numeric IP address A.B.C.D and port number P. | |
2787 | - A local address is represented as a string with the address in the | |
2788 | local address space. | |
2789 | - An "unsupported family" address is represented by a cons (F . AV) | |
2790 | where F is the family number and AV is a vector containing the socket | |
2791 | address data with one element per address data byte. Do not rely on | |
2792 | this format in portable code, as it may depend on implementation | |
2793 | defined constants, data sizes, and data structure alignment. | |
2794 | ||
6b61353c KH |
2795 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2796 | system used for both reading and writing for this process. If CODING | |
2797 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2798 | ENCODING is used for writing. | |
e690ca94 KS |
2799 | |
2800 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2801 | return without waiting for the connection to complete; instead, the | |
2802 | sentinel function will be called with second arg matching "open" (if | |
2803 | successful) or "failed" when the connect completes. Default is to use | |
2804 | a blocking connect (i.e. wait) for stream type connections. | |
2805 | ||
2806 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2807 | running when Emacs is exited. |
e690ca94 KS |
2808 | |
2809 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2810 | In the stopped state, a server process does not accept new | |
2811 | connections, and a client process does not handle incoming traffic. | |
2812 | The stopped state is cleared by `continue-process' and set by | |
2813 | `stop-process'. | |
2814 | ||
2815 | :filter FILTER -- Install FILTER as the process filter. | |
2816 | ||
7392e23c KS |
2817 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2818 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2819 | If this keyword is not specified, the strings are multibyte if |
016a35df | 2820 | the default value of `enable-multibyte-characters' is non-nil. |
03f04413 | 2821 | |
e690ca94 KS |
2822 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2823 | ||
2824 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2825 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2826 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2827 | is the server process, CLIENT is the new process for the connection, | |
2828 | and MESSAGE is a string. | |
2829 | ||
faa7db08 | 2830 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2831 | |
6b61353c | 2832 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2833 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2834 | If QLEN is an integer, it is used as the max. length of the server's |
2835 | pending connection queue (also known as the backlog); the default | |
2836 | queue length is 5. Default is to create a client process. | |
2837 | ||
2838 | The following network options can be specified for this connection: | |
2839 | ||
2840 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2841 | :dontroute BOOL -- Only send to directly connected hosts. | |
2842 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2843 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2844 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2845 | :priority INT -- Set protocol defined priority for sent packets. | |
2846 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2847 | (this is allowed by default for a server process). | |
2848 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2849 | special privileges on some systems. | |
2850 | ||
2851 | Consult the relevant system programmer's manual pages for more | |
2852 | information on using these options. | |
2853 | ||
2854 | ||
2855 | A server process will listen for and accept connections from clients. | |
2856 | When a client connection is accepted, a new network process is created | |
2857 | for the connection with the following parameters: | |
e690ca94 | 2858 | |
e690ca94 KS |
2859 | - The client's process name is constructed by concatenating the server |
2860 | process' NAME and a client identification string. | |
2861 | - If the FILTER argument is non-nil, the client process will not get a | |
2862 | separate process buffer; otherwise, the client's process buffer is a newly | |
2863 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2864 | NAME concatenated with the client identification string. |
e690ca94 KS |
2865 | - The connection type and the process filter and sentinel parameters are |
2866 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2867 | - The client process' contact info is set according to the client's | |
2868 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2869 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2870 | |
2871 | Notice that the FILTER and SENTINEL args are never used directly by | |
2872 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2873 | the server process, but via the optional :log function, accepted (and |
2874 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2875 | |
365aee82 KS |
2876 | The original argument list, modified with the actual connection |
2877 | information, is available via the `process-contact' function. | |
365aee82 | 2878 | |
fa9d4315 | 2879 | usage: (make-network-process &rest ARGS) */) |
f66c7cf8 | 2880 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 JB |
2881 | { |
2882 | Lisp_Object proc; | |
e690ca94 KS |
2883 | Lisp_Object contact; |
2884 | struct Lisp_Process *p; | |
70dbdb36 | 2885 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2886 | struct addrinfo ai, *res, *lres; |
e1652a86 | 2887 | struct addrinfo hints; |
8ea90aa3 DN |
2888 | const char *portstring; |
2889 | char portbuf[128]; | |
70dbdb36 | 2890 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2891 | struct _emacs_addrinfo |
2892 | { | |
2893 | int ai_family; | |
2894 | int ai_socktype; | |
2895 | int ai_protocol; | |
2896 | int ai_addrlen; | |
2897 | struct sockaddr *ai_addr; | |
2898 | struct _emacs_addrinfo *ai_next; | |
2899 | } ai, *res, *lres; | |
418b48fd | 2900 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2901 | struct sockaddr_in address_in; |
2902 | #ifdef HAVE_LOCAL_SOCKETS | |
2903 | struct sockaddr_un address_un; | |
2904 | #endif | |
2905 | int port; | |
dd2a17ab KS |
2906 | int ret = 0; |
2907 | int xerrno = 0; | |
418b48fd | 2908 | int s = -1, outch, inch; |
e690ca94 | 2909 | struct gcpro gcpro1; |
d311d28c PE |
2910 | ptrdiff_t count = SPECPDL_INDEX (); |
2911 | ptrdiff_t count1; | |
e690ca94 KS |
2912 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2913 | Lisp_Object tem; | |
2914 | Lisp_Object name, buffer, host, service, address; | |
2915 | Lisp_Object filter, sentinel; | |
2916 | int is_non_blocking_client = 0; | |
6b61353c | 2917 | int is_server = 0, backlog = 5; |
9057ff80 | 2918 | int socktype; |
e690ca94 KS |
2919 | int family = -1; |
2920 | ||
2921 | if (nargs == 0) | |
2922 | return Qnil; | |
dd2a17ab | 2923 | |
e690ca94 KS |
2924 | /* Save arguments for process-contact and clone-process. */ |
2925 | contact = Flist (nargs, args); | |
2926 | GCPRO1 (contact); | |
2927 | ||
bff3ed0a RS |
2928 | #ifdef WINDOWSNT |
2929 | /* Ensure socket support is loaded if available. */ | |
2930 | init_winsock (TRUE); | |
2931 | #endif | |
2932 | ||
9057ff80 KS |
2933 | /* :type TYPE (nil: stream, datagram */ |
2934 | tem = Fplist_get (contact, QCtype); | |
2935 | if (NILP (tem)) | |
2936 | socktype = SOCK_STREAM; | |
2937 | #ifdef DATAGRAM_SOCKETS | |
2938 | else if (EQ (tem, Qdatagram)) | |
2939 | socktype = SOCK_DGRAM; | |
f00c449b SM |
2940 | #endif |
2941 | #ifdef HAVE_SEQPACKET | |
2942 | else if (EQ (tem, Qseqpacket)) | |
2943 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 2944 | #endif |
9057ff80 KS |
2945 | else |
2946 | error ("Unsupported connection type"); | |
e690ca94 KS |
2947 | |
2948 | /* :server BOOL */ | |
2949 | tem = Fplist_get (contact, QCserver); | |
2950 | if (!NILP (tem)) | |
2951 | { | |
75728599 JR |
2952 | /* Don't support network sockets when non-blocking mode is |
2953 | not available, since a blocked Emacs is not useful. */ | |
5e617bc2 | 2954 | #if !defined (O_NONBLOCK) && !defined (O_NDELAY) |
e690ca94 KS |
2955 | error ("Network servers not supported"); |
2956 | #else | |
2957 | is_server = 1; | |
d311d28c | 2958 | if (TYPE_RANGED_INTEGERP (int, tem)) |
6b61353c | 2959 | backlog = XINT (tem); |
e690ca94 KS |
2960 | #endif |
2961 | } | |
2962 | ||
2963 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2964 | QCaddress = is_server ? QClocal : QCremote; | |
2965 | ||
d7e344cd | 2966 | /* :nowait BOOL */ |
84b31826 | 2967 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
2968 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
2969 | { | |
2970 | #ifndef NON_BLOCKING_CONNECT | |
2971 | error ("Non-blocking connect not supported"); | |
2972 | #else | |
2973 | is_non_blocking_client = 1; | |
2974 | #endif | |
2975 | } | |
2976 | ||
2977 | name = Fplist_get (contact, QCname); | |
2978 | buffer = Fplist_get (contact, QCbuffer); | |
2979 | filter = Fplist_get (contact, QCfilter); | |
2980 | sentinel = Fplist_get (contact, QCsentinel); | |
2981 | ||
b7826503 | 2982 | CHECK_STRING (name); |
e690ca94 | 2983 | |
e690ca94 KS |
2984 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
2985 | ai.ai_socktype = socktype; | |
2986 | ai.ai_protocol = 0; | |
2987 | ai.ai_next = NULL; | |
2988 | res = &ai; | |
a319f7c1 | 2989 | |
e690ca94 KS |
2990 | /* :local ADDRESS or :remote ADDRESS */ |
2991 | address = Fplist_get (contact, QCaddress); | |
2992 | if (!NILP (address)) | |
a319f7c1 | 2993 | { |
e690ca94 KS |
2994 | host = service = Qnil; |
2995 | ||
2996 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2997 | error ("Malformed :address"); | |
2998 | ai.ai_family = family; | |
2999 | ai.ai_addr = alloca (ai.ai_addrlen); | |
3000 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
3001 | goto open_socket; | |
a319f7c1 | 3002 | } |
e690ca94 KS |
3003 | |
3004 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
3005 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 3006 | if (NILP (tem)) |
a319f7c1 | 3007 | { |
5e617bc2 | 3008 | #if defined (HAVE_GETADDRINFO) && defined (AF_INET6) |
e1652a86 KS |
3009 | family = AF_UNSPEC; |
3010 | #else | |
3011 | family = AF_INET; | |
e690ca94 | 3012 | #endif |
a319f7c1 | 3013 | } |
e1652a86 KS |
3014 | #ifdef HAVE_LOCAL_SOCKETS |
3015 | else if (EQ (tem, Qlocal)) | |
3016 | family = AF_LOCAL; | |
3017 | #endif | |
3018 | #ifdef AF_INET6 | |
3019 | else if (EQ (tem, Qipv6)) | |
3020 | family = AF_INET6; | |
3021 | #endif | |
3022 | else if (EQ (tem, Qipv4)) | |
3023 | family = AF_INET; | |
d311d28c | 3024 | else if (TYPE_RANGED_INTEGERP (int, tem)) |
e1652a86 KS |
3025 | family = XINT (tem); |
3026 | else | |
e690ca94 | 3027 | error ("Unknown address family"); |
e1652a86 | 3028 | |
e690ca94 KS |
3029 | ai.ai_family = family; |
3030 | ||
3031 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3032 | service = Fplist_get (contact, QCservice); | |
3033 | ||
66a9f7f4 SM |
3034 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3035 | host = Fplist_get (contact, QChost); | |
3036 | if (!NILP (host)) | |
3037 | { | |
3038 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
3039 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
3040 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
3041 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
3042 | CHECK_STRING (host); |
3043 | } | |
3044 | ||
e690ca94 KS |
3045 | #ifdef HAVE_LOCAL_SOCKETS |
3046 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3047 | { |
66a9f7f4 SM |
3048 | if (!NILP (host)) |
3049 | { | |
3050 | message (":family local ignores the :host \"%s\" property", | |
3051 | SDATA (host)); | |
3052 | contact = Fplist_put (contact, QChost, Qnil); | |
3053 | host = Qnil; | |
3054 | } | |
b7826503 | 3055 | CHECK_STRING (service); |
72af86bd | 3056 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3057 | address_un.sun_family = AF_LOCAL; |
e99a530f PE |
3058 | if (sizeof address_un.sun_path <= SBYTES (service)) |
3059 | error ("Service name too long"); | |
3060 | strcpy (address_un.sun_path, SSDATA (service)); | |
e690ca94 KS |
3061 | ai.ai_addr = (struct sockaddr *) &address_un; |
3062 | ai.ai_addrlen = sizeof address_un; | |
3063 | goto open_socket; | |
d0d6b7c5 | 3064 | } |
e690ca94 | 3065 | #endif |
a319f7c1 | 3066 | |
798b64bb KH |
3067 | /* Slow down polling to every ten seconds. |
3068 | Some kernels have a bug which causes retrying connect to fail | |
3069 | after a connect. Polling can interfere with gethostbyname too. */ | |
3070 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3071 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3072 | { |
3073 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3074 | bind_polling_period (10); | |
3075 | } | |
798b64bb KH |
3076 | #endif |
3077 | ||
a319f7c1 | 3078 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3079 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3080 | Otherwise, use getservbyname to lookup the service. */ | |
3081 | if (!NILP (host)) | |
3082 | { | |
3083 | ||
3084 | /* SERVICE can either be a string or int. | |
3085 | Convert to a C string for later use by getaddrinfo. */ | |
3086 | if (EQ (service, Qt)) | |
3087 | portstring = "0"; | |
3088 | else if (INTEGERP (service)) | |
3089 | { | |
c2982e87 | 3090 | sprintf (portbuf, "%"pI"d", XINT (service)); |
e690ca94 KS |
3091 | portstring = portbuf; |
3092 | } | |
3093 | else | |
3094 | { | |
3095 | CHECK_STRING (service); | |
42a5b22f | 3096 | portstring = SSDATA (service); |
e690ca94 KS |
3097 | } |
3098 | ||
3099 | immediate_quit = 1; | |
3100 | QUIT; | |
3101 | memset (&hints, 0, sizeof (hints)); | |
3102 | hints.ai_flags = 0; | |
e1652a86 | 3103 | hints.ai_family = family; |
e690ca94 KS |
3104 | hints.ai_socktype = socktype; |
3105 | hints.ai_protocol = 0; | |
08116b48 CY |
3106 | |
3107 | #ifdef HAVE_RES_INIT | |
3108 | res_init (); | |
3109 | #endif | |
3110 | ||
42a5b22f | 3111 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3112 | if (ret) |
f6270f62 | 3113 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3114 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3115 | #else |
42a5b22f | 3116 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3117 | #endif |
e690ca94 | 3118 | immediate_quit = 0; |
a319f7c1 | 3119 | |
e690ca94 KS |
3120 | goto open_socket; |
3121 | } | |
3122 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3123 | |
e690ca94 KS |
3124 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3125 | has been specified (e.g. for a local server process). */ | |
3126 | ||
3127 | if (EQ (service, Qt)) | |
3128 | port = 0; | |
3129 | else if (INTEGERP (service)) | |
3130 | port = htons ((unsigned short) XINT (service)); | |
3131 | else | |
616da37c | 3132 | { |
e690ca94 KS |
3133 | struct servent *svc_info; |
3134 | CHECK_STRING (service); | |
42a5b22f | 3135 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3136 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3137 | if (svc_info == 0) | |
d5db4077 | 3138 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3139 | port = svc_info->s_port; |
3140 | } | |
3141 | ||
72af86bd | 3142 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3143 | address_in.sin_family = family; |
3144 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3145 | address_in.sin_port = port; | |
3146 | ||
3147 | #ifndef HAVE_GETADDRINFO | |
3148 | if (!NILP (host)) | |
3149 | { | |
3150 | struct hostent *host_info_ptr; | |
3151 | ||
c5e87d10 | 3152 | /* gethostbyname may fail with TRY_AGAIN, but we don't honor that, |
f3d9532b | 3153 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3154 | immediate_quit = 1; |
3155 | QUIT; | |
08116b48 CY |
3156 | |
3157 | #ifdef HAVE_RES_INIT | |
3158 | res_init (); | |
3159 | #endif | |
3160 | ||
d5db4077 | 3161 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3162 | immediate_quit = 0; |
177c0ea7 | 3163 | |
e690ca94 KS |
3164 | if (host_info_ptr) |
3165 | { | |
72af86bd AS |
3166 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3167 | host_info_ptr->h_length); | |
e690ca94 KS |
3168 | family = host_info_ptr->h_addrtype; |
3169 | address_in.sin_family = family; | |
3170 | } | |
3171 | else | |
3172 | /* Attempt to interpret host as numeric inet address */ | |
3173 | { | |
4624371d | 3174 | unsigned long numeric_addr; |
51b59d79 | 3175 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3176 | if (numeric_addr == -1) |
d5db4077 | 3177 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3178 | |
72af86bd AS |
3179 | memcpy (&address_in.sin_addr, &numeric_addr, |
3180 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3181 | } |
d0d6b7c5 | 3182 | |
e690ca94 | 3183 | } |
dd2a17ab | 3184 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3185 | |
e690ca94 KS |
3186 | ai.ai_family = family; |
3187 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3188 | ai.ai_addrlen = sizeof address_in; | |
3189 | ||
3190 | open_socket: | |
3191 | ||
dd2a17ab | 3192 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3193 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3194 | s = -1; |
457a9bee | 3195 | |
dd2a17ab KS |
3196 | for (lres = res; lres; lres = lres->ai_next) |
3197 | { | |
f66c7cf8 | 3198 | ptrdiff_t optn; |
c5101a77 | 3199 | int optbits; |
6b61353c | 3200 | |
4dc343ee | 3201 | #ifdef WINDOWSNT |
649dbf36 | 3202 | retry_connect: |
4dc343ee | 3203 | #endif |
649dbf36 | 3204 | |
dd2a17ab KS |
3205 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3206 | if (s < 0) | |
3207 | { | |
3208 | xerrno = errno; | |
3209 | continue; | |
3210 | } | |
0f2ee0c1 | 3211 | |
e690ca94 KS |
3212 | #ifdef DATAGRAM_SOCKETS |
3213 | if (!is_server && socktype == SOCK_DGRAM) | |
3214 | break; | |
3215 | #endif /* DATAGRAM_SOCKETS */ | |
3216 | ||
dd2a17ab | 3217 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3218 | if (is_non_blocking_client) |
dd2a17ab KS |
3219 | { |
3220 | #ifdef O_NONBLOCK | |
3221 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3222 | #else | |
3223 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3224 | #endif | |
3225 | if (ret < 0) | |
3226 | { | |
3227 | xerrno = errno; | |
3228 | emacs_close (s); | |
3229 | s = -1; | |
3230 | continue; | |
3231 | } | |
3232 | } | |
3233 | #endif | |
177c0ea7 | 3234 | |
dd2a17ab | 3235 | /* Make us close S if quit. */ |
dd2a17ab KS |
3236 | record_unwind_protect (close_file_unwind, make_number (s)); |
3237 | ||
6b61353c KH |
3238 | /* Parse network options in the arg list. |
3239 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3240 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3241 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3242 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3243 | ||
e690ca94 KS |
3244 | if (is_server) |
3245 | { | |
3246 | /* Configure as a server socket. */ | |
6b61353c KH |
3247 | |
3248 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3249 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3250 | #ifdef HAVE_LOCAL_SOCKETS |
3251 | if (family != AF_LOCAL) | |
3252 | #endif | |
6b61353c KH |
3253 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3254 | { | |
3255 | int optval = 1; | |
3256 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3257 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3258 | } | |
177c0ea7 | 3259 | |
e690ca94 KS |
3260 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3261 | report_file_error ("Cannot bind server socket", Qnil); | |
3262 | ||
3263 | #ifdef HAVE_GETSOCKNAME | |
3264 | if (EQ (service, Qt)) | |
3265 | { | |
3266 | struct sockaddr_in sa1; | |
401bf9b4 | 3267 | socklen_t len1 = sizeof (sa1); |
e690ca94 KS |
3268 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3269 | { | |
3270 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3271 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3272 | contact = Fplist_put (contact, QCservice, service); |
3273 | } | |
3274 | } | |
3275 | #endif | |
3276 | ||
84b31826 | 3277 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3278 | report_file_error ("Cannot listen on server socket", Qnil); |
3279 | ||
3280 | break; | |
3281 | } | |
3282 | ||
dd2a17ab KS |
3283 | immediate_quit = 1; |
3284 | QUIT; | |
3285 | ||
dd2a17ab KS |
3286 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3287 | xerrno = errno; | |
3288 | ||
dd2a17ab KS |
3289 | if (ret == 0 || xerrno == EISCONN) |
3290 | { | |
dd2a17ab KS |
3291 | /* The unwind-protect will be discarded afterwards. |
3292 | Likewise for immediate_quit. */ | |
3293 | break; | |
3294 | } | |
3295 | ||
3296 | #ifdef NON_BLOCKING_CONNECT | |
3297 | #ifdef EINPROGRESS | |
e690ca94 | 3298 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3299 | break; |
3300 | #else | |
3301 | #ifdef EWOULDBLOCK | |
e690ca94 | 3302 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3303 | break; |
3304 | #endif | |
3305 | #endif | |
3306 | #endif | |
649dbf36 CY |
3307 | |
3308 | #ifndef WINDOWSNT | |
cd591dbc HE |
3309 | if (xerrno == EINTR) |
3310 | { | |
3311 | /* Unlike most other syscalls connect() cannot be called | |
3312 | again. (That would return EALREADY.) The proper way to | |
d35af63c | 3313 | wait for completion is pselect(). */ |
401bf9b4 PE |
3314 | int sc; |
3315 | socklen_t len; | |
cd591dbc HE |
3316 | SELECT_TYPE fdset; |
3317 | retry_select: | |
3318 | FD_ZERO (&fdset); | |
3319 | FD_SET (s, &fdset); | |
3320 | QUIT; | |
d35af63c | 3321 | sc = pselect (s + 1, NULL, &fdset, NULL, NULL, NULL); |
cd591dbc HE |
3322 | if (sc == -1) |
3323 | { | |
649dbf36 | 3324 | if (errno == EINTR) |
cd591dbc | 3325 | goto retry_select; |
649dbf36 | 3326 | else |
cd591dbc HE |
3327 | report_file_error ("select failed", Qnil); |
3328 | } | |
3329 | eassert (sc > 0); | |
649dbf36 CY |
3330 | |
3331 | len = sizeof xerrno; | |
3332 | eassert (FD_ISSET (s, &fdset)); | |
3333 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3334 | report_file_error ("getsockopt failed", Qnil); | |
3335 | if (xerrno) | |
3336 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3337 | else | |
3338 | break; | |
cd591dbc | 3339 | } |
649dbf36 | 3340 | #endif /* !WINDOWSNT */ |
e333e864 | 3341 | |
0f2ee0c1 RS |
3342 | immediate_quit = 0; |
3343 | ||
dd2a17ab | 3344 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3345 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3346 | emacs_close (s); |
dd2a17ab | 3347 | s = -1; |
649dbf36 CY |
3348 | |
3349 | #ifdef WINDOWSNT | |
3350 | if (xerrno == EINTR) | |
3351 | goto retry_connect; | |
3352 | #endif | |
dd2a17ab | 3353 | } |
457a9bee | 3354 | |
e690ca94 KS |
3355 | if (s >= 0) |
3356 | { | |
3357 | #ifdef DATAGRAM_SOCKETS | |
3358 | if (socktype == SOCK_DGRAM) | |
3359 | { | |
3360 | if (datagram_address[s].sa) | |
1088b922 | 3361 | emacs_abort (); |
23f86fce | 3362 | datagram_address[s].sa = xmalloc (lres->ai_addrlen); |
e690ca94 KS |
3363 | datagram_address[s].len = lres->ai_addrlen; |
3364 | if (is_server) | |
3365 | { | |
3366 | Lisp_Object remote; | |
72af86bd | 3367 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3368 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3369 | { | |
3370 | int rfamily, rlen; | |
3371 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3372 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3373 | conv_lisp_to_sockaddr (rfamily, remote, | |
3374 | datagram_address[s].sa, rlen); | |
3375 | } | |
3376 | } | |
3377 | else | |
72af86bd | 3378 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3379 | } |
3380 | #endif | |
177c0ea7 | 3381 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3382 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3383 | #ifdef HAVE_GETSOCKNAME |
3384 | if (!is_server) | |
3385 | { | |
3386 | struct sockaddr_in sa1; | |
401bf9b4 | 3387 | socklen_t len1 = sizeof (sa1); |
2185db04 KS |
3388 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3389 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3390 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3391 | } |
3392 | #endif | |
e690ca94 KS |
3393 | } |
3394 | ||
54b3b62f YM |
3395 | immediate_quit = 0; |
3396 | ||
dd2a17ab | 3397 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3398 | if (res != &ai) |
54b3b62f | 3399 | { |
4d7e6e51 | 3400 | block_input (); |
54b3b62f | 3401 | freeaddrinfo (res); |
4d7e6e51 | 3402 | unblock_input (); |
54b3b62f | 3403 | } |
dd2a17ab KS |
3404 | #endif |
3405 | ||
e690ca94 KS |
3406 | /* Discard the unwind protect for closing S, if any. */ |
3407 | specpdl_ptr = specpdl + count1; | |
3408 | ||
3409 | /* Unwind bind_polling_period and request_sigio. */ | |
3410 | unbind_to (count, Qnil); | |
3411 | ||
dd2a17ab KS |
3412 | if (s < 0) |
3413 | { | |
dd2a17ab KS |
3414 | /* If non-blocking got this far - and failed - assume non-blocking is |
3415 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3416 | the normal blocking calls to open-network-stream handles this error |
3417 | better. */ | |
3418 | if (is_non_blocking_client) | |
dd2a17ab | 3419 | return Qnil; |
dd2a17ab | 3420 | |
d0d6b7c5 | 3421 | errno = xerrno; |
e690ca94 KS |
3422 | if (is_server) |
3423 | report_file_error ("make server process failed", contact); | |
3424 | else | |
3425 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3426 | } |
44ade2e9 | 3427 | |
d0d6b7c5 | 3428 | inch = s; |
59f23005 | 3429 | outch = s; |
d0d6b7c5 JB |
3430 | |
3431 | if (!NILP (buffer)) | |
3432 | buffer = Fget_buffer_create (buffer); | |
3433 | proc = make_process (name); | |
3434 | ||
3435 | chan_process[inch] = proc; | |
3436 | ||
3437 | #ifdef O_NONBLOCK | |
3438 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3439 | #else | |
3440 | #ifdef O_NDELAY | |
3441 | fcntl (inch, F_SETFL, O_NDELAY); | |
3442 | #endif | |
3443 | #endif | |
3444 | ||
e690ca94 KS |
3445 | p = XPROCESS (proc); |
3446 | ||
6a09a33b PE |
3447 | pset_childp (p, contact); |
3448 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
3449 | pset_type (p, Qnetwork); | |
177c0ea7 | 3450 | |
6a09a33b PE |
3451 | pset_buffer (p, buffer); |
3452 | pset_sentinel (p, sentinel); | |
3453 | pset_filter (p, filter); | |
3454 | pset_log (p, Fplist_get (contact, QClog)); | |
e690ca94 | 3455 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
60f0fb11 | 3456 | p->kill_without_query = 1; |
e690ca94 | 3457 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
6a09a33b | 3458 | pset_command (p, Qt); |
6bfd98e7 | 3459 | p->pid = 0; |
60f0fb11 SM |
3460 | p->infd = inch; |
3461 | p->outfd = outch; | |
84b31826 | 3462 | if (is_server && socktype != SOCK_DGRAM) |
6a09a33b | 3463 | pset_status (p, Qlisten); |
dd2a17ab | 3464 | |
f523e0c3 SM |
3465 | /* Make the process marker point into the process buffer (if any). */ |
3466 | if (BUFFERP (buffer)) | |
4d2b044c | 3467 | set_marker_both (p->mark, buffer, |
f523e0c3 SM |
3468 | BUF_ZV (XBUFFER (buffer)), |
3469 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3470 | ||
dd2a17ab | 3471 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3472 | if (is_non_blocking_client) |
dd2a17ab KS |
3473 | { |
3474 | /* We may get here if connect did succeed immediately. However, | |
3475 | in that case, we still need to signal this like a non-blocking | |
3476 | connection. */ | |
6a09a33b | 3477 | pset_status (p, Qconnect); |
dd2a17ab KS |
3478 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3479 | { | |
3480 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3481 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3482 | num_pending_connects++; |
3483 | } | |
3484 | } | |
3485 | else | |
3486 | #endif | |
e690ca94 KS |
3487 | /* A server may have a client filter setting of Qt, but it must |
3488 | still listen for incoming connects unless it is stopped. */ | |
4d2b044c DA |
3489 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
3490 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3491 | { |
3492 | FD_SET (inch, &input_wait_mask); | |
3493 | FD_SET (inch, &non_keyboard_wait_mask); | |
3494 | } | |
3495 | ||
7d0e672e RS |
3496 | if (inch > max_process_desc) |
3497 | max_process_desc = inch; | |
d0d6b7c5 | 3498 | |
e690ca94 KS |
3499 | tem = Fplist_member (contact, QCcoding); |
3500 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3501 | tem = Qnil; /* No error message (too late!). */ | |
3502 | ||
67918941 RS |
3503 | { |
3504 | /* Setup coding systems for communicating with the network stream. */ | |
dbf31225 | 3505 | struct gcpro gcpro1; |
67918941 RS |
3506 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
3507 | Lisp_Object coding_systems = Qt; | |
b93aacde | 3508 | Lisp_Object fargs[5], val; |
67918941 | 3509 | |
e690ca94 | 3510 | if (!NILP (tem)) |
6b61353c KH |
3511 | { |
3512 | val = XCAR (XCDR (tem)); | |
3513 | if (CONSP (val)) | |
3514 | val = XCAR (val); | |
3515 | } | |
e690ca94 | 3516 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3517 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3518 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3519 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3520 | /* We dare not decode end-of-line format by setting VAL to |
3521 | Qraw_text, because the existing Emacs Lisp libraries | |
9858f6c3 | 3522 | assume that they receive bare code including a sequence of |
67918941 RS |
3523 | CR LF. */ |
3524 | val = Qnil; | |
3525 | else | |
3526 | { | |
991234f0 KS |
3527 | if (NILP (host) || NILP (service)) |
3528 | coding_systems = Qnil; | |
3529 | else | |
3530 | { | |
b93aacde PE |
3531 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3532 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3533 | GCPRO1 (proc); |
b93aacde | 3534 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3535 | UNGCPRO; |
991234f0 | 3536 | } |
67918941 | 3537 | if (CONSP (coding_systems)) |
70949dac | 3538 | val = XCAR (coding_systems); |
67918941 | 3539 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3540 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3541 | else |
3542 | val = Qnil; | |
3543 | } | |
6a09a33b | 3544 | pset_decode_coding_system (p, val); |
0fa1789e | 3545 | |
e690ca94 | 3546 | if (!NILP (tem)) |
6b61353c KH |
3547 | { |
3548 | val = XCAR (XCDR (tem)); | |
3549 | if (CONSP (val)) | |
3550 | val = XCDR (val); | |
3551 | } | |
e690ca94 | 3552 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3553 | val = Vcoding_system_for_write; |
4b4deea2 | 3554 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3555 | val = Qnil; |
3556 | else | |
3557 | { | |
3558 | if (EQ (coding_systems, Qt)) | |
3559 | { | |
991234f0 KS |
3560 | if (NILP (host) || NILP (service)) |
3561 | coding_systems = Qnil; | |
3562 | else | |
3563 | { | |
b93aacde PE |
3564 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3565 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3566 | GCPRO1 (proc); |
b93aacde | 3567 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3568 | UNGCPRO; |
991234f0 | 3569 | } |
67918941 RS |
3570 | } |
3571 | if (CONSP (coding_systems)) | |
70949dac | 3572 | val = XCDR (coding_systems); |
67918941 | 3573 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3574 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3575 | else |
3576 | val = Qnil; | |
3577 | } | |
6a09a33b | 3578 | pset_encode_coding_system (p, val); |
67918941 | 3579 | } |
03f04413 | 3580 | setup_process_coding_systems (proc); |
0fa1789e | 3581 | |
6a09a33b | 3582 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 3583 | p->decoding_carryover = 0; |
6a09a33b | 3584 | pset_encoding_buf (p, empty_unibyte_string); |
0fa1789e | 3585 | |
e690ca94 | 3586 | p->inherit_coding_system_flag |
e6fca843 | 3587 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3588 | |
d0d6b7c5 JB |
3589 | UNGCPRO; |
3590 | return proc; | |
3591 | } | |
d0d6b7c5 | 3592 | |
6b61353c | 3593 | \f |
5e617bc2 | 3594 | #if defined (HAVE_NET_IF_H) |
6b61353c KH |
3595 | |
3596 | #ifdef SIOCGIFCONF | |
3597 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3598 | doc: /* Return an alist of all network interfaces and their network address. | |
3599 | Each element is a cons, the car of which is a string containing the | |
3600 | interface name, and the cdr is the network address in internal | |
3601 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3602 | (void) |
6b61353c KH |
3603 | { |
3604 | struct ifconf ifconf; | |
377538cb JD |
3605 | struct ifreq *ifreq; |
3606 | void *buf = NULL; | |
70c60eb2 PE |
3607 | ptrdiff_t buf_size = 512; |
3608 | int s, i; | |
6b61353c KH |
3609 | Lisp_Object res; |
3610 | ||
3611 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3612 | if (s < 0) | |
3613 | return Qnil; | |
3614 | ||
76667214 | 3615 | do |
6b61353c | 3616 | { |
76667214 PE |
3617 | buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1); |
3618 | ifconf.ifc_buf = buf; | |
3619 | ifconf.ifc_len = buf_size; | |
156bffbe AS |
3620 | if (ioctl (s, SIOCGIFCONF, &ifconf)) |
3621 | { | |
3622 | close (s); | |
76667214 | 3623 | xfree (buf); |
156bffbe AS |
3624 | return Qnil; |
3625 | } | |
6b61353c | 3626 | } |
76667214 | 3627 | while (ifconf.ifc_len == buf_size); |
6b61353c KH |
3628 | |
3629 | close (s); | |
6b61353c KH |
3630 | |
3631 | res = Qnil; | |
156bffbe AS |
3632 | ifreq = ifconf.ifc_req; |
3633 | while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len) | |
6b61353c | 3634 | { |
377538cb JD |
3635 | struct ifreq *ifq = ifreq; |
3636 | #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN | |
156bffbe AS |
3637 | #define SIZEOF_IFREQ(sif) \ |
3638 | ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \ | |
3639 | ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len) | |
377538cb JD |
3640 | |
3641 | int len = SIZEOF_IFREQ (ifq); | |
3642 | #else | |
3643 | int len = sizeof (*ifreq); | |
3644 | #endif | |
6b61353c | 3645 | char namebuf[sizeof (ifq->ifr_name) + 1]; |
377538cb | 3646 | i += len; |
156bffbe | 3647 | ifreq = (struct ifreq *) ((char *) ifreq + len); |
377538cb | 3648 | |
6b61353c KH |
3649 | if (ifq->ifr_addr.sa_family != AF_INET) |
3650 | continue; | |
377538cb | 3651 | |
72af86bd | 3652 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3653 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3654 | res = Fcons (Fcons (build_string (namebuf), | |
3655 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3656 | sizeof (struct sockaddr))), | |
3657 | res); | |
3658 | } | |
3659 | ||
377538cb | 3660 | xfree (buf); |
6b61353c KH |
3661 | return res; |
3662 | } | |
3663 | #endif /* SIOCGIFCONF */ | |
3664 | ||
5e617bc2 | 3665 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
6b61353c KH |
3666 | |
3667 | struct ifflag_def { | |
3668 | int flag_bit; | |
91433552 | 3669 | const char *flag_sym; |
6b61353c KH |
3670 | }; |
3671 | ||
91433552 | 3672 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3673 | #ifdef IFF_UP |
3674 | { IFF_UP, "up" }, | |
3675 | #endif | |
3676 | #ifdef IFF_BROADCAST | |
3677 | { IFF_BROADCAST, "broadcast" }, | |
3678 | #endif | |
3679 | #ifdef IFF_DEBUG | |
3680 | { IFF_DEBUG, "debug" }, | |
3681 | #endif | |
3682 | #ifdef IFF_LOOPBACK | |
3683 | { IFF_LOOPBACK, "loopback" }, | |
3684 | #endif | |
3685 | #ifdef IFF_POINTOPOINT | |
3686 | { IFF_POINTOPOINT, "pointopoint" }, | |
3687 | #endif | |
3688 | #ifdef IFF_RUNNING | |
3689 | { IFF_RUNNING, "running" }, | |
3690 | #endif | |
3691 | #ifdef IFF_NOARP | |
3692 | { IFF_NOARP, "noarp" }, | |
3693 | #endif | |
3694 | #ifdef IFF_PROMISC | |
3695 | { IFF_PROMISC, "promisc" }, | |
3696 | #endif | |
3697 | #ifdef IFF_NOTRAILERS | |
377538cb JD |
3698 | #ifdef NS_IMPL_COCOA |
3699 | /* Really means smart, notrailers is obsolete */ | |
3700 | { IFF_NOTRAILERS, "smart" }, | |
3701 | #else | |
6b61353c KH |
3702 | { IFF_NOTRAILERS, "notrailers" }, |
3703 | #endif | |
377538cb | 3704 | #endif |
6b61353c KH |
3705 | #ifdef IFF_ALLMULTI |
3706 | { IFF_ALLMULTI, "allmulti" }, | |
3707 | #endif | |
3708 | #ifdef IFF_MASTER | |
3709 | { IFF_MASTER, "master" }, | |
3710 | #endif | |
3711 | #ifdef IFF_SLAVE | |
3712 | { IFF_SLAVE, "slave" }, | |
3713 | #endif | |
3714 | #ifdef IFF_MULTICAST | |
3715 | { IFF_MULTICAST, "multicast" }, | |
3716 | #endif | |
3717 | #ifdef IFF_PORTSEL | |
3718 | { IFF_PORTSEL, "portsel" }, | |
3719 | #endif | |
3720 | #ifdef IFF_AUTOMEDIA | |
3721 | { IFF_AUTOMEDIA, "automedia" }, | |
3722 | #endif | |
3723 | #ifdef IFF_DYNAMIC | |
3724 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3725 | #endif |
2026418c YM |
3726 | #ifdef IFF_OACTIVE |
3727 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3728 | #endif |
3729 | #ifdef IFF_SIMPLEX | |
3730 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3731 | #endif | |
3732 | #ifdef IFF_LINK0 | |
3733 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3734 | #endif | |
3735 | #ifdef IFF_LINK1 | |
3736 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3737 | #endif | |
3738 | #ifdef IFF_LINK2 | |
3739 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3740 | #endif |
3741 | { 0, 0 } | |
3742 | }; | |
3743 | ||
3744 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3745 | doc: /* Return information about network interface named IFNAME. | |
3746 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3747 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
e4920bc9 | 3748 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and |
6b61353c | 3749 | FLAGS is the current flags of the interface. */) |
5842a27b | 3750 | (Lisp_Object ifname) |
6b61353c KH |
3751 | { |
3752 | struct ifreq rq; | |
3753 | Lisp_Object res = Qnil; | |
3754 | Lisp_Object elt; | |
3755 | int s; | |
3756 | int any = 0; | |
0a0d27fb PE |
3757 | #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \ |
3758 | && defined HAVE_GETIFADDRS && defined LLADDR) | |
377538cb JD |
3759 | struct ifaddrs *ifap; |
3760 | #endif | |
6b61353c KH |
3761 | |
3762 | CHECK_STRING (ifname); | |
3763 | ||
e99a530f PE |
3764 | if (sizeof rq.ifr_name <= SBYTES (ifname)) |
3765 | error ("interface name too long"); | |
3766 | strcpy (rq.ifr_name, SSDATA (ifname)); | |
6b61353c KH |
3767 | |
3768 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3769 | if (s < 0) | |
3770 | return Qnil; | |
3771 | ||
3772 | elt = Qnil; | |
5e617bc2 | 3773 | #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS) |
6b61353c KH |
3774 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3775 | { | |
3776 | int flags = rq.ifr_flags; | |
91433552 | 3777 | const struct ifflag_def *fp; |
6b61353c KH |
3778 | int fnum; |
3779 | ||
377538cb JD |
3780 | /* If flags is smaller than int (i.e. short) it may have the high bit set |
3781 | due to IFF_MULTICAST. In that case, sign extending it into | |
3782 | an int is wrong. */ | |
3783 | if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags)) | |
3784 | flags = (unsigned short) rq.ifr_flags; | |
3785 | ||
bc57d757 | 3786 | any = 1; |
82a80058 | 3787 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3788 | { |
3789 | if (flags & fp->flag_bit) | |
3790 | { | |
3791 | elt = Fcons (intern (fp->flag_sym), elt); | |
3792 | flags -= fp->flag_bit; | |
3793 | } | |
3794 | } | |
fa3c87e1 | 3795 | for (fnum = 0; flags && fnum < 32; flags >>= 1, fnum++) |
6b61353c | 3796 | { |
fa3c87e1 | 3797 | if (flags & 1) |
6b61353c KH |
3798 | { |
3799 | elt = Fcons (make_number (fnum), elt); | |
3800 | } | |
3801 | } | |
3802 | } | |
3803 | #endif | |
3804 | res = Fcons (elt, res); | |
3805 | ||
3806 | elt = Qnil; | |
5e617bc2 | 3807 | #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR) |
6b61353c KH |
3808 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3809 | { | |
3810 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3811 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3812 | int n; | |
3813 | ||
bc57d757 | 3814 | any = 1; |
6b61353c KH |
3815 | for (n = 0; n < 6; n++) |
3816 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3817 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3818 | } | |
5e617bc2 | 3819 | #elif defined (HAVE_GETIFADDRS) && defined (LLADDR) |
377538cb JD |
3820 | if (getifaddrs (&ifap) != -1) |
3821 | { | |
3822 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3823 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3824 | struct ifaddrs *it; | |
3825 | ||
3826 | for (it = ifap; it != NULL; it = it->ifa_next) | |
3827 | { | |
3828 | struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr; | |
3829 | unsigned char linkaddr[6]; | |
3830 | int n; | |
3831 | ||
3832 | if (it->ifa_addr->sa_family != AF_LINK | |
3833 | || strcmp (it->ifa_name, SSDATA (ifname)) != 0 | |
3834 | || sdl->sdl_alen != 6) | |
3835 | continue; | |
3836 | ||
5e617bc2 | 3837 | memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen); |
377538cb JD |
3838 | for (n = 0; n < 6; n++) |
3839 | p->contents[n] = make_number (linkaddr[n]); | |
3840 | ||
3841 | elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr); | |
3842 | break; | |
3843 | } | |
3844 | } | |
3845 | #ifdef HAVE_FREEIFADDRS | |
3846 | freeifaddrs (ifap); | |
6b61353c | 3847 | #endif |
377538cb JD |
3848 | |
3849 | #endif /* HAVE_GETIFADDRS && LLADDR */ | |
3850 | ||
6b61353c KH |
3851 | res = Fcons (elt, res); |
3852 | ||
3853 | elt = Qnil; | |
5e617bc2 | 3854 | #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3855 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3856 | { | |
bc57d757 | 3857 | any = 1; |
2026418c | 3858 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3859 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3860 | #else |
3861 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3862 | #endif | |
6b61353c KH |
3863 | } |
3864 | #endif | |
3865 | res = Fcons (elt, res); | |
3866 | ||
3867 | elt = Qnil; | |
5e617bc2 | 3868 | #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
6b61353c KH |
3869 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3870 | { | |
bc57d757 | 3871 | any = 1; |
6b61353c KH |
3872 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); |
3873 | } | |
3874 | #endif | |
3875 | res = Fcons (elt, res); | |
3876 | ||
3877 | elt = Qnil; | |
5e617bc2 | 3878 | #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR) |
6b61353c KH |
3879 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3880 | { | |
bc57d757 | 3881 | any = 1; |
6b61353c KH |
3882 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); |
3883 | } | |
3884 | #endif | |
3885 | res = Fcons (elt, res); | |
3886 | ||
3887 | close (s); | |
3888 | ||
3889 | return any ? res : Qnil; | |
3890 | } | |
3891 | #endif | |
5e617bc2 | 3892 | #endif /* defined (HAVE_NET_IF_H) */ |
6b61353c | 3893 | |
04391069 RS |
3894 | /* Turn off input and output for process PROC. */ |
3895 | ||
40ccffa6 | 3896 | static void |
d3da34e0 | 3897 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3898 | { |
3899 | register int inchannel, outchannel; | |
3900 | register struct Lisp_Process *p = XPROCESS (proc); | |
3901 | ||
9c6c6f49 CY |
3902 | #ifdef HAVE_GNUTLS |
3903 | /* Delete GnuTLS structures in PROC, if any. */ | |
3904 | emacs_gnutls_deinit (proc); | |
3905 | #endif /* HAVE_GNUTLS */ | |
3906 | ||
60f0fb11 SM |
3907 | inchannel = p->infd; |
3908 | outchannel = p->outfd; | |
d0d6b7c5 | 3909 | |
6b61353c | 3910 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3911 | if (p->read_output_delay > 0) |
6b61353c KH |
3912 | { |
3913 | if (--process_output_delay_count < 0) | |
3914 | process_output_delay_count = 0; | |
60f0fb11 SM |
3915 | p->read_output_delay = 0; |
3916 | p->read_output_skip = 0; | |
6b61353c KH |
3917 | } |
3918 | #endif | |
f3d9532b | 3919 | |
a9f2c884 | 3920 | if (inchannel >= 0) |
d0d6b7c5 JB |
3921 | { |
3922 | /* Beware SIGCHLD hereabouts. */ | |
3923 | flush_pending_output (inchannel); | |
68c45bf0 | 3924 | emacs_close (inchannel); |
a9f2c884 | 3925 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3926 | emacs_close (outchannel); |
d0d6b7c5 | 3927 | |
60f0fb11 SM |
3928 | p->infd = -1; |
3929 | p->outfd = -1; | |
e690ca94 KS |
3930 | #ifdef DATAGRAM_SOCKETS |
3931 | if (DATAGRAM_CHAN_P (inchannel)) | |
3932 | { | |
3933 | xfree (datagram_address[inchannel].sa); | |
3934 | datagram_address[inchannel].sa = 0; | |
3935 | datagram_address[inchannel].len = 0; | |
3936 | } | |
3937 | #endif | |
d0d6b7c5 JB |
3938 | chan_process[inchannel] = Qnil; |
3939 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3940 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3941 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3942 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3943 | { | |
3944 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 3945 | FD_CLR (inchannel, &write_mask); |
dd2a17ab | 3946 | if (--num_pending_connects < 0) |
1088b922 | 3947 | emacs_abort (); |
dd2a17ab | 3948 | } |
bad49fc7 | 3949 | #endif |
7d0e672e RS |
3950 | if (inchannel == max_process_desc) |
3951 | { | |
3952 | int i; | |
3953 | /* We just closed the highest-numbered process input descriptor, | |
3954 | so recompute the highest-numbered one now. */ | |
3955 | max_process_desc = 0; | |
3956 | for (i = 0; i < MAXDESC; i++) | |
3957 | if (!NILP (chan_process[i])) | |
3958 | max_process_desc = i; | |
3959 | } | |
d0d6b7c5 JB |
3960 | } |
3961 | } | |
3962 | ||
d0d6b7c5 JB |
3963 | \f |
3964 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3965 | 0, 4, 0, |
fdb82f93 PJ |
3966 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3967 | It is read into the process' buffers or given to their filter functions. | |
3968 | Non-nil arg PROCESS means do not return until some output has been received | |
3969 | from PROCESS. | |
5088da42 | 3970 | |
2a7bb882 MR |
3971 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
3972 | and milliseconds to wait; return after that much time whether or not | |
3973 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 3974 | it specifies a fractional number of seconds to wait. |
891bd142 | 3975 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 3976 | |
107ed38d KS |
3977 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3978 | from PROCESS, suspending reading output from other processes. | |
3979 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 3980 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 3981 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 3982 | { |
d35af63c PE |
3983 | intmax_t secs; |
3984 | int nsecs; | |
d0d6b7c5 | 3985 | |
0748d150 | 3986 | if (! NILP (process)) |
b7826503 | 3987 | CHECK_PROCESS (process); |
107ed38d KS |
3988 | else |
3989 | just_this_one = Qnil; | |
0748d150 | 3990 | |
891bd142 SM |
3991 | if (!NILP (millisec)) |
3992 | { /* Obsolete calling convention using integers rather than floats. */ | |
3993 | CHECK_NUMBER (millisec); | |
3994 | if (NILP (seconds)) | |
3995 | seconds = make_float (XINT (millisec) / 1000.0); | |
3996 | else | |
3997 | { | |
3998 | CHECK_NUMBER (seconds); | |
3999 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
4000 | } | |
4001 | } | |
4002 | ||
d35af63c PE |
4003 | secs = 0; |
4004 | nsecs = -1; | |
4005 | ||
5088da42 | 4006 | if (!NILP (seconds)) |
d0d6b7c5 | 4007 | { |
d35af63c PE |
4008 | if (INTEGERP (seconds)) |
4009 | { | |
4010 | if (0 < XINT (seconds)) | |
4011 | { | |
4012 | secs = XINT (seconds); | |
4013 | nsecs = 0; | |
4014 | } | |
4015 | } | |
4016 | else if (FLOATP (seconds)) | |
4017 | { | |
4018 | if (0 < XFLOAT_DATA (seconds)) | |
4019 | { | |
4020 | EMACS_TIME t = EMACS_TIME_FROM_DOUBLE (XFLOAT_DATA (seconds)); | |
f1dd8073 | 4021 | secs = min (EMACS_SECS (t), WAIT_READING_MAX); |
d35af63c PE |
4022 | nsecs = EMACS_NSECS (t); |
4023 | } | |
4024 | } | |
4025 | else | |
4026 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 4027 | } |
d35af63c PE |
4028 | else if (! NILP (process)) |
4029 | nsecs = 0; | |
d0d6b7c5 JB |
4030 | |
4031 | return | |
d35af63c | 4032 | (wait_reading_process_output (secs, nsecs, 0, 0, |
214d6069 KS |
4033 | Qnil, |
4034 | !NILP (process) ? XPROCESS (process) : NULL, | |
4035 | NILP (just_this_one) ? 0 : | |
4036 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
4037 | ? Qt : Qnil); |
4038 | } | |
4039 | ||
e690ca94 KS |
4040 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4041 | ||
4042 | static int connect_counter = 0; | |
4043 | ||
4044 | static void | |
d3da34e0 | 4045 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4046 | { |
4047 | Lisp_Object proc, caller, name, buffer; | |
4048 | Lisp_Object contact, host, service; | |
4049 | struct Lisp_Process *ps= XPROCESS (server); | |
4050 | struct Lisp_Process *p; | |
4051 | int s; | |
4052 | union u_sockaddr { | |
4053 | struct sockaddr sa; | |
4054 | struct sockaddr_in in; | |
e1652a86 KS |
4055 | #ifdef AF_INET6 |
4056 | struct sockaddr_in6 in6; | |
4057 | #endif | |
e690ca94 KS |
4058 | #ifdef HAVE_LOCAL_SOCKETS |
4059 | struct sockaddr_un un; | |
4060 | #endif | |
4061 | } saddr; | |
401bf9b4 | 4062 | socklen_t len = sizeof saddr; |
e690ca94 KS |
4063 | |
4064 | s = accept (channel, &saddr.sa, &len); | |
4065 | ||
4066 | if (s < 0) | |
4067 | { | |
4068 | int code = errno; | |
4069 | ||
4070 | if (code == EAGAIN) | |
4071 | return; | |
4072 | #ifdef EWOULDBLOCK | |
4073 | if (code == EWOULDBLOCK) | |
4074 | return; | |
4075 | #endif | |
4076 | ||
4d2b044c DA |
4077 | if (!NILP (ps->log)) |
4078 | call3 (ps->log, server, Qnil, | |
e690ca94 KS |
4079 | concat3 (build_string ("accept failed with code"), |
4080 | Fnumber_to_string (make_number (code)), | |
4081 | build_string ("\n"))); | |
4082 | return; | |
4083 | } | |
4084 | ||
4085 | connect_counter++; | |
4086 | ||
4087 | /* Setup a new process to handle the connection. */ | |
4088 | ||
4089 | /* Generate a unique identification of the caller, and build contact | |
4090 | information for this process. */ | |
4091 | host = Qt; | |
4092 | service = Qnil; | |
4093 | switch (saddr.sa.sa_family) | |
4094 | { | |
4095 | case AF_INET: | |
4096 | { | |
4097 | Lisp_Object args[5]; | |
4098 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4099 | args[0] = build_string ("%d.%d.%d.%d"); | |
4100 | args[1] = make_number (*ip++); | |
4101 | args[2] = make_number (*ip++); | |
4102 | args[3] = make_number (*ip++); | |
4103 | args[4] = make_number (*ip++); | |
4104 | host = Fformat (5, args); | |
4105 | service = make_number (ntohs (saddr.in.sin_port)); | |
4106 | ||
4107 | args[0] = build_string (" <%s:%d>"); | |
4108 | args[1] = host; | |
4109 | args[2] = service; | |
4110 | caller = Fformat (3, args); | |
4111 | } | |
4112 | break; | |
4113 | ||
e1652a86 KS |
4114 | #ifdef AF_INET6 |
4115 | case AF_INET6: | |
4116 | { | |
4117 | Lisp_Object args[9]; | |
4118 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4119 | int i; | |
4120 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4121 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4122 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4123 | host = Fformat (9, args); |
4124 | service = make_number (ntohs (saddr.in.sin_port)); | |
4125 | ||
4126 | args[0] = build_string (" <[%s]:%d>"); | |
4127 | args[1] = host; | |
4128 | args[2] = service; | |
4129 | caller = Fformat (3, args); | |
4130 | } | |
4131 | break; | |
4132 | #endif | |
4133 | ||
e690ca94 KS |
4134 | #ifdef HAVE_LOCAL_SOCKETS |
4135 | case AF_LOCAL: | |
4136 | #endif | |
4137 | default: | |
4138 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4139 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4140 | break; |
4141 | } | |
4142 | ||
4143 | /* Create a new buffer name for this process if it doesn't have a | |
4144 | filter. The new buffer name is based on the buffer name or | |
4145 | process name of the server process concatenated with the caller | |
4146 | identification. */ | |
4147 | ||
4d2b044c | 4148 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) |
e690ca94 KS |
4149 | buffer = Qnil; |
4150 | else | |
4151 | { | |
4d2b044c | 4152 | buffer = ps->buffer; |
e690ca94 KS |
4153 | if (!NILP (buffer)) |
4154 | buffer = Fbuffer_name (buffer); | |
4155 | else | |
4d2b044c | 4156 | buffer = ps->name; |
e690ca94 KS |
4157 | if (!NILP (buffer)) |
4158 | { | |
4159 | buffer = concat2 (buffer, caller); | |
4160 | buffer = Fget_buffer_create (buffer); | |
4161 | } | |
4162 | } | |
4163 | ||
4164 | /* Generate a unique name for the new server process. Combine the | |
4165 | server process name with the caller identification. */ | |
4166 | ||
4d2b044c | 4167 | name = concat2 (ps->name, caller); |
e690ca94 KS |
4168 | proc = make_process (name); |
4169 | ||
4170 | chan_process[s] = proc; | |
4171 | ||
4172 | #ifdef O_NONBLOCK | |
4173 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4174 | #else | |
4175 | #ifdef O_NDELAY | |
4176 | fcntl (s, F_SETFL, O_NDELAY); | |
4177 | #endif | |
4178 | #endif | |
4179 | ||
4180 | p = XPROCESS (proc); | |
4181 | ||
4182 | /* Build new contact information for this setup. */ | |
4d2b044c | 4183 | contact = Fcopy_sequence (ps->childp); |
e690ca94 KS |
4184 | contact = Fplist_put (contact, QCserver, Qnil); |
4185 | contact = Fplist_put (contact, QChost, host); | |
4186 | if (!NILP (service)) | |
4187 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4188 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4189 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4190 | #ifdef HAVE_GETSOCKNAME | |
4191 | len = sizeof saddr; | |
2185db04 | 4192 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4193 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4194 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4195 | #endif | |
4196 | ||
6a09a33b PE |
4197 | pset_childp (p, contact); |
4198 | pset_plist (p, Fcopy_sequence (ps->plist)); | |
4199 | pset_type (p, Qnetwork); | |
ac4a7584 | 4200 | |
6a09a33b PE |
4201 | pset_buffer (p, buffer); |
4202 | pset_sentinel (p, ps->sentinel); | |
4203 | pset_filter (p, ps->filter); | |
4204 | pset_command (p, Qnil); | |
6bfd98e7 | 4205 | p->pid = 0; |
60f0fb11 SM |
4206 | p->infd = s; |
4207 | p->outfd = s; | |
6a09a33b | 4208 | pset_status (p, Qrun); |
e690ca94 KS |
4209 | |
4210 | /* Client processes for accepted connections are not stopped initially. */ | |
4d2b044c | 4211 | if (!EQ (p->filter, Qt)) |
e690ca94 KS |
4212 | { |
4213 | FD_SET (s, &input_wait_mask); | |
4214 | FD_SET (s, &non_keyboard_wait_mask); | |
4215 | } | |
4216 | ||
4217 | if (s > max_process_desc) | |
4218 | max_process_desc = s; | |
4219 | ||
177c0ea7 | 4220 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4221 | This seems to be the proper thing to do, as the coding system |
4222 | of the new process should reflect the settings at the time the | |
4223 | server socket was opened; not the current settings. */ | |
4224 | ||
6a09a33b PE |
4225 | pset_decode_coding_system (p, ps->decode_coding_system); |
4226 | pset_encode_coding_system (p, ps->encode_coding_system); | |
03f04413 | 4227 | setup_process_coding_systems (proc); |
e690ca94 | 4228 | |
6a09a33b | 4229 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 4230 | p->decoding_carryover = 0; |
6a09a33b | 4231 | pset_encoding_buf (p, empty_unibyte_string); |
e690ca94 KS |
4232 | |
4233 | p->inherit_coding_system_flag | |
60f0fb11 | 4234 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 | 4235 | |
4d2b044c DA |
4236 | if (!NILP (ps->log)) |
4237 | call3 (ps->log, server, proc, | |
e690ca94 KS |
4238 | concat3 (build_string ("accept from "), |
4239 | (STRINGP (host) ? host : build_string ("-")), | |
4240 | build_string ("\n"))); | |
4241 | ||
4d2b044c | 4242 | if (!NILP (p->sentinel)) |
177c0ea7 | 4243 | exec_sentinel (proc, |
e690ca94 KS |
4244 | concat3 (build_string ("open from "), |
4245 | (STRINGP (host) ? host : build_string ("-")), | |
4246 | build_string ("\n"))); | |
4247 | } | |
4248 | ||
d0d6b7c5 JB |
4249 | /* This variable is different from waiting_for_input in keyboard.c. |
4250 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4251 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4252 | for user-input when that process-filter was called. |
4253 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4254 | lisp code is being evalled. |
4255 | This is also used in record_asynch_buffer_change. | |
4256 | For that purpose, this must be 0 | |
214d6069 | 4257 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4258 | static int waiting_for_user_input_p; |
4259 | ||
2beb96f9 | 4260 | static Lisp_Object |
d3da34e0 | 4261 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4262 | { |
4263 | waiting_for_user_input_p = XINT (data); | |
4264 | return Qnil; | |
4265 | } | |
4266 | ||
c573ae8e | 4267 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4268 | static void |
d3da34e0 | 4269 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4270 | { |
4271 | } | |
4272 | ||
d0d6b7c5 JB |
4273 | /* Read and dispose of subprocess output while waiting for timeout to |
4274 | elapse and/or keyboard input to be available. | |
4275 | ||
de6fd4b9 | 4276 | TIME_LIMIT is: |
d35af63c PE |
4277 | timeout in seconds |
4278 | If negative, gobble data immediately available but don't wait for any. | |
d0d6b7c5 | 4279 | |
d35af63c PE |
4280 | NSECS is: |
4281 | an additional duration to wait, measured in nanoseconds | |
4282 | If TIME_LIMIT is zero, then: | |
4283 | If NSECS == 0, there is no limit. | |
d188e26b | 4284 | If NSECS > 0, the timeout consists of NSECS only. |
d35af63c | 4285 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
6e4f3667 | 4286 | |
a0bee46f | 4287 | READ_KBD is: |
d0d6b7c5 JB |
4288 | 0 to ignore keyboard input, or |
4289 | 1 to return when input is available, or | |
84aa3ace | 4290 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4291 | the quit handler, or |
d0d6b7c5 | 4292 | |
9fa1de30 | 4293 | DO_DISPLAY means redisplay should be done to show subprocess |
107ed38d | 4294 | output that arrives. |
d0d6b7c5 | 4295 | |
b89a415a KS |
4296 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4297 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4298 | |
b89a415a | 4299 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4300 | process. The return value is true if we read some input from |
b89a415a KS |
4301 | that process. |
4302 | ||
4303 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4304 | (suspending output from other processes). A negative value | |
4305 | means don't run any timers either. | |
4306 | ||
e0f24100 | 4307 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4308 | received input from that process before the timeout elapsed. |
e0f24100 | 4309 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4310 | |
dfcf069d | 4311 | int |
d35af63c | 4312 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
9fa1de30 | 4313 | bool do_display, |
d5a3eaaf AS |
4314 | Lisp_Object wait_for_cell, |
4315 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4316 | { |
41d03b9a | 4317 | register int channel, nfds; |
855448dc | 4318 | SELECT_TYPE Available; |
3fad2ad2 J |
4319 | SELECT_TYPE Writeok; |
4320 | int check_write; | |
bad49fc7 | 4321 | int check_delay, no_avail; |
d0d6b7c5 JB |
4322 | int xerrno; |
4323 | Lisp_Object proc; | |
41d03b9a | 4324 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4325 | int wait_channel = -1; |
d0d6b7c5 | 4326 | int got_some_input = 0; |
d311d28c | 4327 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4328 | |
4329 | FD_ZERO (&Available); | |
3fad2ad2 | 4330 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4331 | |
d35af63c | 4332 | if (time_limit == 0 && nsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
4d2b044c DA |
4333 | && !(CONSP (wait_proc->status) |
4334 | && EQ (XCAR (wait_proc->status), Qexit))) | |
2b0a91e7 SM |
4335 | message ("Blocking call to accept-process-output with quit inhibited!!"); |
4336 | ||
b89a415a KS |
4337 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4338 | if (wait_proc != NULL) | |
60f0fb11 | 4339 | wait_channel = wait_proc->infd; |
84aa3ace | 4340 | |
2beb96f9 KS |
4341 | record_unwind_protect (wait_reading_process_output_unwind, |
4342 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4343 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 | 4344 | |
d35af63c PE |
4345 | if (time_limit < 0) |
4346 | { | |
4347 | time_limit = 0; | |
4348 | nsecs = -1; | |
4349 | } | |
4350 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
4351 | time_limit = TYPE_MAXIMUM (time_t); | |
4352 | ||
d0d6b7c5 JB |
4353 | /* Since we may need to wait several times, |
4354 | compute the absolute time to return at. */ | |
216ee680 | 4355 | if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4356 | { |
e9a9ae03 PE |
4357 | timeout = make_emacs_time (time_limit, nsecs); |
4358 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
d0d6b7c5 JB |
4359 | } |
4360 | ||
d0d6b7c5 JB |
4361 | while (1) |
4362 | { | |
c0239a0b RS |
4363 | int timeout_reduced_for_timers = 0; |
4364 | ||
d0d6b7c5 JB |
4365 | /* If calling from keyboard input, do not quit |
4366 | since we want to return C-g as an input character. | |
4367 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4368 | if (read_kbd >= 0) |
d0d6b7c5 | 4369 | QUIT; |
4d7e6e51 | 4370 | else if (pending_signals) |
c3eff1b0 | 4371 | process_pending_signals (); |
d0d6b7c5 | 4372 | |
889255b4 | 4373 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4374 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4375 | break; |
4376 | ||
d0d6b7c5 JB |
4377 | /* Compute time from now till when time limit is up */ |
4378 | /* Exit if already run out */ | |
d35af63c | 4379 | if (nsecs < 0) |
d0d6b7c5 | 4380 | { |
216ee680 | 4381 | /* A negative timeout means |
d0d6b7c5 JB |
4382 | gobble output available now |
4383 | but don't wait at all. */ | |
4384 | ||
e9a9ae03 | 4385 | timeout = make_emacs_time (0, 0); |
d0d6b7c5 | 4386 | } |
216ee680 | 4387 | else if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4388 | { |
e9a9ae03 PE |
4389 | EMACS_TIME now = current_emacs_time (); |
4390 | if (EMACS_TIME_LE (end_time, now)) | |
d0d6b7c5 | 4391 | break; |
e9a9ae03 | 4392 | timeout = sub_emacs_time (end_time, now); |
d0d6b7c5 JB |
4393 | } |
4394 | else | |
4395 | { | |
e9a9ae03 | 4396 | timeout = make_emacs_time (100000, 0); |
d0d6b7c5 JB |
4397 | } |
4398 | ||
f854a00b RS |
4399 | /* Normally we run timers here. |
4400 | But not if wait_for_cell; in those cases, | |
4401 | the wait is supposed to be short, | |
4402 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4403 | if (NILP (wait_for_cell) |
b89a415a | 4404 | && just_wait_proc >= 0) |
fb4c3627 | 4405 | { |
c0239a0b | 4406 | EMACS_TIME timer_delay; |
c573ae8e | 4407 | |
9baacf76 | 4408 | do |
c573ae8e | 4409 | { |
9fa1de30 | 4410 | unsigned old_timers_run = timers_run; |
c88164fe | 4411 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4412 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4413 | |
f868cd8a | 4414 | timer_delay = timer_check (); |
a2fab450 GM |
4415 | |
4416 | /* If a timer has run, this might have changed buffers | |
4417 | an alike. Make read_key_sequence aware of that. */ | |
4418 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4419 | && (old_buffer != current_buffer |
4420 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4421 | && waiting_for_user_input_p == -1) |
4422 | record_asynch_buffer_change (); | |
177c0ea7 | 4423 | |
9baacf76 GM |
4424 | if (timers_run != old_timers_run && do_display) |
4425 | /* We must retry, since a timer may have requeued itself | |
4426 | and that could alter the time_delay. */ | |
3007ebfb | 4427 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4428 | else |
4429 | break; | |
c573ae8e | 4430 | } |
9baacf76 | 4431 | while (!detect_input_pending ()); |
c573ae8e | 4432 | |
69645afc | 4433 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4434 | if (read_kbd != 0 |
69645afc RS |
4435 | && requeued_events_pending_p ()) |
4436 | break; | |
4437 | ||
216ee680 | 4438 | /* A negative timeout means do not wait at all. */ |
d35af63c | 4439 | if (0 <= nsecs) |
fb4c3627 | 4440 | { |
d35af63c | 4441 | if (EMACS_TIME_VALID_P (timer_delay)) |
c0239a0b | 4442 | { |
d35af63c PE |
4443 | if (EMACS_TIME_LT (timer_delay, timeout)) |
4444 | { | |
4445 | timeout = timer_delay; | |
4446 | timeout_reduced_for_timers = 1; | |
4447 | } | |
4448 | } | |
4449 | else | |
4450 | { | |
4451 | /* This is so a breakpoint can be put here. */ | |
4452 | wait_reading_process_output_1 (); | |
c0239a0b | 4453 | } |
c573ae8e | 4454 | } |
fb4c3627 RS |
4455 | } |
4456 | ||
90ab1a81 JB |
4457 | /* Cause C-g and alarm signals to take immediate action, |
4458 | and cause input available signals to zero out timeout. | |
4459 | ||
4460 | It is important that we do this before checking for process | |
4461 | activity. If we get a SIGCHLD after the explicit checks for | |
4462 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4463 | if (read_kbd < 0) |
90ab1a81 JB |
4464 | set_waiting_for_input (&timeout); |
4465 | ||
6be429b1 JB |
4466 | /* If status of something has changed, and no input is |
4467 | available, notify the user of the change right away. After | |
4468 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4469 | timeout to get our attention. */ |
4470 | if (update_tick != process_tick) | |
6be429b1 | 4471 | { |
bad49fc7 | 4472 | SELECT_TYPE Atemp; |
bad49fc7 | 4473 | SELECT_TYPE Ctemp; |
dd2a17ab | 4474 | |
cb768704 J |
4475 | if (kbd_on_hold_p ()) |
4476 | FD_ZERO (&Atemp); | |
4477 | else | |
4478 | Atemp = input_wait_mask; | |
3fad2ad2 | 4479 | Ctemp = write_mask; |
bad49fc7 | 4480 | |
e9a9ae03 | 4481 | timeout = make_emacs_time (0, 0); |
d35af63c PE |
4482 | if ((pselect (max (max_process_desc, max_input_desc) + 1, |
4483 | &Atemp, | |
bad49fc7 | 4484 | #ifdef NON_BLOCKING_CONNECT |
d35af63c | 4485 | (num_pending_connects > 0 ? &Ctemp : NULL), |
bad49fc7 | 4486 | #else |
d35af63c | 4487 | NULL, |
bad49fc7 | 4488 | #endif |
d35af63c | 4489 | NULL, &timeout, NULL) |
ecd1f654 | 4490 | <= 0)) |
90ab1a81 JB |
4491 | { |
4492 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4493 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4494 | clear_waiting_for_input (); |
ff6daed3 | 4495 | status_notify (NULL); |
e42bdf01 | 4496 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4497 | } |
6be429b1 JB |
4498 | } |
4499 | ||
dd2a17ab | 4500 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4501 | read whatever data has already been received. */ |
6bfd98e7 | 4502 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4503 | update_status (wait_proc); |
6bfd98e7 | 4504 | if (wait_proc |
4d2b044c DA |
4505 | && ! EQ (wait_proc->status, Qrun) |
4506 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4507 | { |
215b45e9 | 4508 | int nread, total_nread = 0; |
7ce63188 | 4509 | |
9aa2a7f4 | 4510 | clear_waiting_for_input (); |
7ce63188 RS |
4511 | XSETPROCESS (proc, wait_proc); |
4512 | ||
4513 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4514 | while (wait_proc->infd >= 0) |
215b45e9 | 4515 | { |
60f0fb11 | 4516 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4517 | |
4518 | if (nread == 0) | |
4519 | break; | |
4520 | ||
63136da6 AS |
4521 | if (0 < nread) |
4522 | { | |
891bd142 SM |
4523 | total_nread += nread; |
4524 | got_some_input = 1; | |
4525 | } | |
215b45e9 RS |
4526 | #ifdef EIO |
4527 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4528 | break; |
e1b37c34 GM |
4529 | #endif |
4530 | #ifdef EAGAIN | |
4531 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4532 | break; |
e1b37c34 GM |
4533 | #endif |
4534 | #ifdef EWOULDBLOCK | |
4535 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4536 | break; |
215b45e9 RS |
4537 | #endif |
4538 | } | |
7ce63188 | 4539 | if (total_nread > 0 && do_display) |
3007ebfb | 4540 | redisplay_preserve_echo_area (10); |
7ce63188 | 4541 | |
9aa2a7f4 JB |
4542 | break; |
4543 | } | |
6be429b1 | 4544 | |
d0d6b7c5 JB |
4545 | /* Wait till there is something to do */ |
4546 | ||
b89a415a | 4547 | if (wait_proc && just_wait_proc) |
107ed38d | 4548 | { |
60f0fb11 | 4549 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4550 | break; |
60f0fb11 | 4551 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4552 | check_delay = 0; |
3fad2ad2 | 4553 | check_write = 0; |
107ed38d KS |
4554 | } |
4555 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4556 | { |
4557 | Available = non_process_wait_mask; | |
bad49fc7 | 4558 | check_delay = 0; |
3fad2ad2 | 4559 | check_write = 0; |
dd2a17ab | 4560 | } |
a69281ff | 4561 | else |
dd2a17ab | 4562 | { |
b89a415a | 4563 | if (! read_kbd) |
dd2a17ab KS |
4564 | Available = non_keyboard_wait_mask; |
4565 | else | |
4566 | Available = input_wait_mask; | |
3fad2ad2 | 4567 | Writeok = write_mask; |
82d6e50b J |
4568 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4569 | check_write = 0; | |
4570 | #else | |
3fad2ad2 | 4571 | check_write = 1; |
82d6e50b | 4572 | #endif |
6b61353c | 4573 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4574 | } |
d0d6b7c5 | 4575 | |
ff11dfa1 | 4576 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4577 | redisplay now, before we start to wait. There is a race |
4578 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4579 | and indicates that a frame is trashed, the select may block |
4580 | displaying a trashed screen. */ | |
5164ee8e | 4581 | if (frame_garbaged && do_display) |
7286affd RS |
4582 | { |
4583 | clear_waiting_for_input (); | |
3007ebfb | 4584 | redisplay_preserve_echo_area (11); |
b89a415a | 4585 | if (read_kbd < 0) |
7efe788e | 4586 | set_waiting_for_input (&timeout); |
7286affd | 4587 | } |
ffd56f97 | 4588 | |
029529ac CY |
4589 | /* Skip the `select' call if input is available and we're |
4590 | waiting for keyboard input or a cell change (which can be | |
4591 | triggered by processing X events). In the latter case, set | |
4592 | nfds to 1 to avoid breaking the loop. */ | |
dd2a17ab | 4593 | no_avail = 0; |
029529ac CY |
4594 | if ((read_kbd || !NILP (wait_for_cell)) |
4595 | && detect_input_pending ()) | |
0a65b032 | 4596 | { |
029529ac | 4597 | nfds = read_kbd ? 0 : 1; |
dd2a17ab | 4598 | no_avail = 1; |
0a65b032 | 4599 | } |
029529ac CY |
4600 | |
4601 | if (!no_avail) | |
dd2a17ab | 4602 | { |
6b61353c KH |
4603 | |
4604 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4605 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4606 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4607 | read_output_delay, and we are not reading output for a |
4608 | specific wait_channel. It is not executed if | |
4609 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4610 | if (process_output_skip && check_delay > 0) |
4611 | { | |
d35af63c PE |
4612 | int nsecs = EMACS_NSECS (timeout); |
4613 | if (EMACS_SECS (timeout) > 0 || nsecs > READ_OUTPUT_DELAY_MAX) | |
4614 | nsecs = READ_OUTPUT_DELAY_MAX; | |
6b61353c KH |
4615 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) |
4616 | { | |
4617 | proc = chan_process[channel]; | |
4618 | if (NILP (proc)) | |
4619 | continue; | |
db853b7a | 4620 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4621 | processes with non-zero read_output_skip. */ |
4622 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4623 | { |
4624 | check_delay--; | |
60f0fb11 | 4625 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4626 | continue; |
4627 | FD_CLR (channel, &Available); | |
60f0fb11 | 4628 | XPROCESS (proc)->read_output_skip = 0; |
d35af63c PE |
4629 | if (XPROCESS (proc)->read_output_delay < nsecs) |
4630 | nsecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4631 | } |
4632 | } | |
e9a9ae03 | 4633 | timeout = make_emacs_time (0, nsecs); |
6b61353c KH |
4634 | process_output_skip = 0; |
4635 | } | |
4636 | #endif | |
0fda9b75 | 4637 | |
0949d2b6 | 4638 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 JD |
4639 | nfds = xg_select |
4640 | #elif defined (HAVE_NS) | |
63136da6 | 4641 | nfds = ns_select |
edfda783 | 4642 | #else |
d35af63c | 4643 | nfds = pselect |
edfda783 | 4644 | #endif |
3fad2ad2 J |
4645 | (max (max_process_desc, max_input_desc) + 1, |
4646 | &Available, | |
4647 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
d35af63c | 4648 | NULL, &timeout, NULL); |
e061a11b TZ |
4649 | |
4650 | #ifdef HAVE_GNUTLS | |
4651 | /* GnuTLS buffers data internally. In lowat mode it leaves | |
4652 | some data in the TCP buffers so that select works, but | |
4653 | with custom pull/push functions we need to check if some | |
4654 | data is available in the buffers manually. */ | |
261b6fd4 LMI |
4655 | if (nfds == 0) |
4656 | { | |
4657 | if (! wait_proc) | |
4658 | { | |
4659 | /* We're not waiting on a specific process, so loop | |
16c1ad08 LMI |
4660 | through all the channels and check for data. |
4661 | This is a workaround needed for some versions of | |
4662 | the gnutls library -- 2.12.14 has been confirmed | |
4663 | to need it. See | |
4664 | http://comments.gmane.org/gmane.emacs.devel/145074 */ | |
261b6fd4 | 4665 | for (channel = 0; channel < MAXDESC; ++channel) |
5b76caa4 PE |
4666 | if (! NILP (chan_process[channel])) |
4667 | { | |
4668 | struct Lisp_Process *p = | |
4669 | XPROCESS (chan_process[channel]); | |
4670 | if (p && p->gnutls_p && p->infd | |
4671 | && ((emacs_gnutls_record_check_pending | |
4672 | (p->gnutls_state)) | |
4673 | > 0)) | |
4674 | { | |
4675 | nfds++; | |
4676 | FD_SET (p->infd, &Available); | |
4677 | } | |
4678 | } | |
261b6fd4 LMI |
4679 | } |
4680 | else | |
4681 | { | |
4682 | /* Check this specific channel. */ | |
5b76caa4 | 4683 | if (wait_proc->gnutls_p /* Check for valid process. */ |
261b6fd4 | 4684 | /* Do we have pending data? */ |
5b76caa4 PE |
4685 | && ((emacs_gnutls_record_check_pending |
4686 | (wait_proc->gnutls_state)) | |
4687 | > 0)) | |
261b6fd4 LMI |
4688 | { |
4689 | nfds = 1; | |
4690 | /* Set to Available. */ | |
4691 | FD_SET (wait_proc->infd, &Available); | |
4692 | } | |
4693 | } | |
4694 | } | |
e061a11b | 4695 | #endif |
dd2a17ab | 4696 | } |
6720a7fb | 4697 | |
d0d6b7c5 JB |
4698 | xerrno = errno; |
4699 | ||
4700 | /* Make C-g and alarm signals set flags again */ | |
4701 | clear_waiting_for_input (); | |
4702 | ||
4703 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4704 | do_pending_window_change (0); |
d0d6b7c5 | 4705 | |
d35af63c | 4706 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
216ee680 | 4707 | /* We waited the full specified time, so return now. */ |
d0d6b7c5 JB |
4708 | break; |
4709 | if (nfds < 0) | |
4710 | { | |
4711 | if (xerrno == EINTR) | |
dd2a17ab | 4712 | no_avail = 1; |
d0d6b7c5 JB |
4713 | else if (xerrno == EBADF) |
4714 | { | |
4715 | #ifdef AIX | |
4716 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4717 | the child's closure of the pts gives the parent a SIGHUP, and | |
4718 | the ptc file descriptor is automatically closed, | |
4719 | yielding EBADF here or at select() call above. | |
4720 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4721 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4722 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4723 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 | 4724 | #else |
1088b922 | 4725 | emacs_abort (); |
d0d6b7c5 JB |
4726 | #endif |
4727 | } | |
4728 | else | |
68c45bf0 | 4729 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4730 | } |
dd2a17ab KS |
4731 | |
4732 | if (no_avail) | |
4733 | { | |
4734 | FD_ZERO (&Available); | |
3fad2ad2 | 4735 | check_write = 0; |
dd2a17ab KS |
4736 | } |
4737 | ||
d0d6b7c5 JB |
4738 | /* Check for keyboard input */ |
4739 | /* If there is any, return immediately | |
4740 | to give it higher priority than subprocesses */ | |
4741 | ||
b89a415a | 4742 | if (read_kbd != 0) |
6ed6233b | 4743 | { |
9fa1de30 | 4744 | unsigned old_timers_run = timers_run; |
c88164fe | 4745 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4746 | Lisp_Object old_window = selected_window; |
a2fab450 | 4747 | int leave = 0; |
177c0ea7 | 4748 | |
5d6c2aa3 | 4749 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4750 | { |
4751 | swallow_events (do_display); | |
4752 | if (detect_input_pending_run_timers (do_display)) | |
4753 | leave = 1; | |
4754 | } | |
6ed6233b | 4755 | |
a2fab450 GM |
4756 | /* If a timer has run, this might have changed buffers |
4757 | an alike. Make read_key_sequence aware of that. */ | |
4758 | if (timers_run != old_timers_run | |
c88164fe | 4759 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4760 | && (old_buffer != current_buffer |
4761 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4762 | record_asynch_buffer_change (); |
4763 | ||
4764 | if (leave) | |
4765 | break; | |
177c0ea7 JB |
4766 | } |
4767 | ||
69645afc | 4768 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4769 | if (read_kbd != 0 |
69645afc RS |
4770 | && requeued_events_pending_p ()) |
4771 | break; | |
4772 | ||
77e1b3d4 RS |
4773 | /* If we are not checking for keyboard input now, |
4774 | do process events (but don't run any timers). | |
4775 | This is so that X events will be processed. | |
0c9960e9 | 4776 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4777 | That would causes delays in pasting selections, for example. |
4778 | ||
4779 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4780 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4781 | { |
4782 | swallow_events (do_display); | |
0c9960e9 | 4783 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4784 | if (detect_input_pending ()) |
4785 | break; | |
5d5beb62 | 4786 | #endif |
0c9960e9 | 4787 | } |
f854a00b | 4788 | |
84aa3ace | 4789 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4790 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4791 | break; |
4792 | ||
4a4bbad2 | 4793 | #ifdef USABLE_SIGIO |
5d5beb62 | 4794 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4795 | go read it. This can happen with X on BSD after logging out. |
4796 | In that case, there really is no input and no SIGIO, | |
4797 | but select says there is input. */ | |
4798 | ||
b89a415a | 4799 | if (read_kbd && interrupt_input |
2601f59e | 4800 | && keyboard_bit_set (&Available) && ! noninteractive) |
4d7e6e51 | 4801 | handle_input_available_signal (SIGIO); |
4746118a | 4802 | #endif |
d0d6b7c5 | 4803 | |
d0d6b7c5 JB |
4804 | if (! wait_proc) |
4805 | got_some_input |= nfds > 0; | |
4806 | ||
32676c08 JB |
4807 | /* If checking input just got us a size-change event from X, |
4808 | obey it now if we should. */ | |
b89a415a | 4809 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4810 | do_pending_window_change (0); |
32676c08 | 4811 | |
a9f2c884 | 4812 | /* Check for data from a process. */ |
dd2a17ab KS |
4813 | if (no_avail || nfds == 0) |
4814 | continue; | |
4815 | ||
3fad2ad2 J |
4816 | for (channel = 0; channel <= max_input_desc; ++channel) |
4817 | { | |
4818 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
de1339b0 PE |
4819 | if (d->func |
4820 | && ((d->condition & FOR_READ | |
4821 | && FD_ISSET (channel, &Available)) | |
4822 | || (d->condition & FOR_WRITE | |
4823 | && FD_ISSET (channel, &write_mask)))) | |
4824 | d->func (channel, d->data); | |
4825 | } | |
3fad2ad2 | 4826 | |
a69281ff | 4827 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4828 | { |
a69281ff | 4829 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4830 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4831 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4832 | { |
4833 | int nread; | |
4834 | ||
4835 | /* If waiting for this channel, arrange to return as | |
4836 | soon as no more input to be processed. No more | |
4837 | waiting. */ | |
4838 | if (wait_channel == channel) | |
4839 | { | |
a9f2c884 | 4840 | wait_channel = -1; |
d35af63c | 4841 | nsecs = -1; |
d0d6b7c5 JB |
4842 | got_some_input = 1; |
4843 | } | |
4844 | proc = chan_process[channel]; | |
4845 | if (NILP (proc)) | |
4846 | continue; | |
4847 | ||
e690ca94 | 4848 | /* If this is a server stream socket, accept connection. */ |
4d2b044c | 4849 | if (EQ (XPROCESS (proc)->status, Qlisten)) |
e690ca94 KS |
4850 | { |
4851 | server_accept_connection (proc, channel); | |
4852 | continue; | |
4853 | } | |
4854 | ||
d0d6b7c5 JB |
4855 | /* Read data from the process, starting with our |
4856 | buffered-ahead character if we have one. */ | |
4857 | ||
4858 | nread = read_process_output (proc, channel); | |
4859 | if (nread > 0) | |
4860 | { | |
4861 | /* Since read_process_output can run a filter, | |
4862 | which can call accept-process-output, | |
4863 | don't try to read from any other processes | |
4864 | before doing the select again. */ | |
4865 | FD_ZERO (&Available); | |
4866 | ||
4867 | if (do_display) | |
3007ebfb | 4868 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4869 | } |
4870 | #ifdef EWOULDBLOCK | |
4871 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4872 | ; | |
0b75e9a4 | 4873 | #endif |
89d7280d RS |
4874 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4875 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4876 | #ifdef O_NONBLOCK |
4877 | else if (nread == -1 && errno == EAGAIN) | |
4878 | ; | |
4879 | #else | |
4880 | #ifdef O_NDELAY | |
4881 | else if (nread == -1 && errno == EAGAIN) | |
4882 | ; | |
4883 | /* Note that we cannot distinguish between no input | |
4884 | available now and a closed pipe. | |
4885 | With luck, a closed pipe will be accompanied by | |
4886 | subprocess termination and SIGCHLD. */ | |
d888760c | 4887 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4888 | ; |
4740825c KS |
4889 | #endif /* O_NDELAY */ |
4890 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4891 | #ifdef HAVE_PTYS |
4892 | /* On some OSs with ptys, when the process on one end of | |
4893 | a pty exits, the other end gets an error reading with | |
4894 | errno = EIO instead of getting an EOF (0 bytes read). | |
4895 | Therefore, if we get an error reading and errno = | |
4896 | EIO, just continue, because the child process has | |
4897 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4898 | get a SIGCHLD). |
4899 | ||
4900 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4901 | got lost. So raise the signal again just in case. |
5651af6d | 4902 | It can't hurt. */ |
d0d6b7c5 | 4903 | else if (nread == -1 && errno == EIO) |
4740825c | 4904 | { |
f30d612a CY |
4905 | struct Lisp_Process *p = XPROCESS (proc); |
4906 | ||
4907 | /* Clear the descriptor now, so we only raise the | |
4908 | signal once. */ | |
4909 | FD_CLR (channel, &input_wait_mask); | |
4910 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4911 | ||
4912 | if (p->pid == -2) | |
4913 | { | |
20ef56db PE |
4914 | /* If the EIO occurs on a pty, the SIGCHLD handler's |
4915 | waitpid call will not find the process object to | |
f30d612a CY |
4916 | delete. Do it here. */ |
4917 | p->tick = ++process_tick; | |
6a09a33b | 4918 | pset_status (p, Qfailed); |
f30d612a CY |
4919 | } |
4920 | else | |
4d7e6e51 | 4921 | handle_child_signal (SIGCHLD); |
4740825c KS |
4922 | } |
4923 | #endif /* HAVE_PTYS */ | |
5063c0e1 TN |
4924 | /* If we can detect process termination, don't consider the |
4925 | process gone just because its pipe is closed. */ | |
d0d6b7c5 | 4926 | #ifdef SIGCHLD |
d888760c | 4927 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4928 | ; |
4929 | #endif | |
4930 | else | |
4931 | { | |
4932 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4933 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4934 | deactivate_process (proc); |
6bfd98e7 | 4935 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 | 4936 | update_status (XPROCESS (proc)); |
4d2b044c | 4937 | if (EQ (XPROCESS (proc)->status, Qrun)) |
6a09a33b PE |
4938 | pset_status (XPROCESS (proc), |
4939 | list2 (Qexit, make_number (256))); | |
d0d6b7c5 JB |
4940 | } |
4941 | } | |
177c0ea7 | 4942 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 4943 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 4944 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
4945 | { |
4946 | struct Lisp_Process *p; | |
dd2a17ab KS |
4947 | |
4948 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 4949 | FD_CLR (channel, &write_mask); |
dd2a17ab | 4950 | if (--num_pending_connects < 0) |
1088b922 | 4951 | emacs_abort (); |
dd2a17ab KS |
4952 | |
4953 | proc = chan_process[channel]; | |
4954 | if (NILP (proc)) | |
4955 | continue; | |
4956 | ||
4957 | p = XPROCESS (proc); | |
4958 | ||
4959 | #ifdef GNU_LINUX | |
4960 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 4961 | So only use it on systems where it is known to work. */ |
dd2a17ab | 4962 | { |
401bf9b4 | 4963 | socklen_t xlen = sizeof (xerrno); |
ed3751c8 | 4964 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
dd2a17ab KS |
4965 | xerrno = errno; |
4966 | } | |
4967 | #else | |
44c887be PJ |
4968 | { |
4969 | struct sockaddr pname; | |
ed3751c8 | 4970 | int pnamelen = sizeof (pname); |
44c887be PJ |
4971 | |
4972 | /* If connection failed, getpeername will fail. */ | |
4973 | xerrno = 0; | |
ed3751c8 | 4974 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
4975 | { |
4976 | /* Obtain connect failure code through error slippage. */ | |
4977 | char dummy; | |
dd2a17ab | 4978 | xerrno = errno; |
ed3751c8 | 4979 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
4980 | xerrno = errno; |
4981 | } | |
4982 | } | |
dd2a17ab KS |
4983 | #endif |
4984 | if (xerrno) | |
4985 | { | |
60f0fb11 | 4986 | p->tick = ++process_tick; |
6a09a33b | 4987 | pset_status (p, list2 (Qfailed, make_number (xerrno))); |
dd2a17ab KS |
4988 | deactivate_process (proc); |
4989 | } | |
4990 | else | |
4991 | { | |
6a09a33b | 4992 | pset_status (p, Qrun); |
dd2a17ab KS |
4993 | /* Execute the sentinel here. If we had relied on |
4994 | status_notify to do it later, it will read input | |
4995 | from the process before calling the sentinel. */ | |
4996 | exec_sentinel (proc, build_string ("open\n")); | |
4d2b044c | 4997 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 4998 | { |
60f0fb11 SM |
4999 | FD_SET (p->infd, &input_wait_mask); |
5000 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
5001 | } |
5002 | } | |
5003 | } | |
5004 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
5005 | } /* end for each file descriptor */ |
5006 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 5007 | |
2beb96f9 | 5008 | unbind_to (count, Qnil); |
d430ee71 | 5009 | |
ffd56f97 JB |
5010 | /* If calling from keyboard input, do not quit |
5011 | since we want to return C-g as an input character. | |
5012 | Otherwise, do pending quit if requested. */ | |
b89a415a | 5013 | if (read_kbd >= 0) |
ffd56f97 JB |
5014 | { |
5015 | /* Prevent input_pending from remaining set if we quit. */ | |
5016 | clear_input_pending (); | |
5017 | QUIT; | |
5018 | } | |
efa2a55c | 5019 | |
d0d6b7c5 JB |
5020 | return got_some_input; |
5021 | } | |
5022 | \f | |
3b9a3dfa RS |
5023 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
5024 | ||
5025 | static Lisp_Object | |
d3da34e0 | 5026 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5027 | { |
70949dac | 5028 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5029 | } |
5030 | ||
5031 | static Lisp_Object | |
b93aacde | 5032 | read_process_output_error_handler (Lisp_Object error_val) |
3b9a3dfa | 5033 | { |
b93aacde | 5034 | cmd_error_internal (error_val, "error in process filter: "); |
3b9a3dfa RS |
5035 | Vinhibit_quit = Qt; |
5036 | update_echo_area (); | |
833ba342 | 5037 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5038 | return Qt; |
3b9a3dfa RS |
5039 | } |
5040 | ||
d0d6b7c5 JB |
5041 | /* Read pending output from the process channel, |
5042 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5043 | Yield number of decoded characters read. |
d0d6b7c5 | 5044 | |
116c423c | 5045 | This function reads at most 4096 characters. |
d0d6b7c5 | 5046 | If you want to read all available subprocess output, |
0fa1789e KH |
5047 | you must call it repeatedly until it returns zero. |
5048 | ||
5049 | The characters read are decoded according to PROC's coding-system | |
5050 | for decoding. */ | |
d0d6b7c5 | 5051 | |
ff6daed3 | 5052 | static int |
d3da34e0 | 5053 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5054 | { |
368f4090 | 5055 | register ssize_t nbytes; |
d0d6b7c5 | 5056 | char *chars; |
d0d6b7c5 | 5057 | register Lisp_Object outstream; |
d0d6b7c5 | 5058 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 5059 | register ptrdiff_t opoint; |
c7580538 | 5060 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5061 | int carryover = p->decoding_carryover; |
116c423c | 5062 | int readmax = 4096; |
d311d28c | 5063 | ptrdiff_t count = SPECPDL_INDEX (); |
3a4fa2f2 | 5064 | Lisp_Object odeactivate; |
d0d6b7c5 | 5065 | |
38182d90 | 5066 | chars = alloca (carryover + readmax); |
e7fbaa65 KH |
5067 | if (carryover) |
5068 | /* See the comment above. */ | |
4d2b044c | 5069 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5070 | |
e690ca94 KS |
5071 | #ifdef DATAGRAM_SOCKETS |
5072 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5073 | if (DATAGRAM_CHAN_P (channel)) | |
5074 | { | |
401bf9b4 | 5075 | socklen_t len = datagram_address[channel].len; |
39b1da20 | 5076 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5077 | 0, datagram_address[channel].sa, &len); |
5078 | } | |
5079 | else | |
5080 | #endif | |
6b61353c | 5081 | { |
82eaa333 PE |
5082 | int buffered = 0 <= proc_buffered_char[channel]; |
5083 | if (buffered) | |
5084 | { | |
5085 | chars[carryover] = proc_buffered_char[channel]; | |
5086 | proc_buffered_char[channel] = -1; | |
5087 | } | |
8af55556 | 5088 | #ifdef HAVE_GNUTLS |
959ad23f AS |
5089 | if (p->gnutls_p) |
5090 | nbytes = emacs_gnutls_read (p, chars + carryover + buffered, | |
82eaa333 | 5091 | readmax - buffered); |
8af55556 TZ |
5092 | else |
5093 | #endif | |
82eaa333 PE |
5094 | nbytes = emacs_read (channel, chars + carryover + buffered, |
5095 | readmax - buffered); | |
6b61353c | 5096 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5097 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5098 | { |
60f0fb11 | 5099 | int delay = p->read_output_delay; |
6b61353c KH |
5100 | if (nbytes < 256) |
5101 | { | |
5102 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5103 | { | |
5104 | if (delay == 0) | |
5105 | process_output_delay_count++; | |
5106 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5107 | } | |
5108 | } | |
82eaa333 | 5109 | else if (delay > 0 && nbytes == readmax - buffered) |
6b61353c KH |
5110 | { |
5111 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5112 | if (delay == 0) | |
5113 | process_output_delay_count--; | |
5114 | } | |
60f0fb11 | 5115 | p->read_output_delay = delay; |
6b61353c KH |
5116 | if (delay) |
5117 | { | |
60f0fb11 | 5118 | p->read_output_skip = 1; |
6b61353c KH |
5119 | process_output_skip = 1; |
5120 | } | |
5121 | } | |
5122 | #endif | |
fe07cdfa PE |
5123 | nbytes += buffered; |
5124 | nbytes += buffered && nbytes <= 0; | |
d0d6b7c5 | 5125 | } |
d0d6b7c5 | 5126 | |
60f0fb11 | 5127 | p->decoding_carryover = 0; |
ca65341e | 5128 | |
ed7a4b2d | 5129 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5130 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5131 | if (nbytes <= 0) |
5132 | { | |
5133 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5134 | return nbytes; | |
5135 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5136 | } | |
d0d6b7c5 | 5137 | |
1d2fc612 | 5138 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5139 | nbytes += carryover; |
0fa1789e | 5140 | |
3a4fa2f2 SM |
5141 | odeactivate = Vdeactivate_mark; |
5142 | /* There's no good reason to let process filters change the current | |
5143 | buffer, and many callers of accept-process-output, sit-for, and | |
5144 | friends don't expect current-buffer to be changed from under them. */ | |
66322887 | 5145 | record_unwind_current_buffer (); |
3a4fa2f2 | 5146 | |
1d2fc612 | 5147 | /* Read and dispose of the process output. */ |
4d2b044c | 5148 | outstream = p->filter; |
d0d6b7c5 JB |
5149 | if (!NILP (outstream)) |
5150 | { | |
1d2fc612 | 5151 | Lisp_Object text; |
1882aa38 | 5152 | bool outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5153 | int waiting = waiting_for_user_input_p; |
30c78175 | 5154 | |
dfc21838 RS |
5155 | /* No need to gcpro these, because all we do with them later |
5156 | is test them for EQness, and none of them should be a string. */ | |
aba7731a PE |
5157 | #if 0 |
5158 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 5159 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 5160 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 5161 | #endif |
30c78175 | 5162 | |
3a4fa2f2 SM |
5163 | /* We inhibit quit here instead of just catching it so that |
5164 | hitting ^G when a filter happens to be running won't screw | |
5165 | it up. */ | |
d0d6b7c5 | 5166 | specbind (Qinhibit_quit, Qt); |
6545aada | 5167 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5168 | |
4da2f5be RS |
5169 | /* In case we get recursively called, |
5170 | and we already saved the match data nonrecursively, | |
5171 | save the same match data in safely recursive fashion. */ | |
5172 | if (outer_running_asynch_code) | |
5173 | { | |
5174 | Lisp_Object tem; | |
5175 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5176 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5177 | restore_search_regs (); | |
5178 | record_unwind_save_match_data (); | |
5179 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5180 | } |
5181 | ||
5182 | /* For speed, if a search happens within this code, | |
5183 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5184 | running_asynch_code = 1; |
4da2f5be | 5185 | |
400a67ff | 5186 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 | 5187 | text = coding->dst_object; |
5bbf78c1 | 5188 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5189 | /* A new coding system might be found. */ |
4d2b044c | 5190 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5191 | { |
6a09a33b | 5192 | pset_decode_coding_system (p, Vlast_coding_system_used); |
ed7a4b2d KH |
5193 | |
5194 | /* Don't call setup_coding_system for | |
5195 | proc_decode_coding_system[channel] here. It is done in | |
5196 | detect_coding called via decode_coding above. */ | |
5197 | ||
5198 | /* If a coding system for encoding is not yet decided, we set | |
5199 | it as the same as coding-system for decoding. | |
5200 | ||
5201 | But, before doing that we must check if | |
5202 | proc_encode_coding_system[p->outfd] surely points to a | |
5203 | valid memory because p->outfd will be changed once EOF is | |
5204 | sent to the process. */ | |
4d2b044c | 5205 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5206 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5207 | { |
6a09a33b PE |
5208 | pset_encode_coding_system |
5209 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
4d2b044c | 5210 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5211 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5212 | } |
5213 | } | |
51c6067d | 5214 | |
dd8c7a53 KH |
5215 | if (coding->carryover_bytes > 0) |
5216 | { | |
4d2b044c | 5217 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
6a09a33b | 5218 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5219 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5220 | coding->carryover_bytes); |
8c406a9b | 5221 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5222 | } |
e430e5ba | 5223 | if (SBYTES (text) > 0) |
963b492b SM |
5224 | /* FIXME: It's wrong to wrap or not based on debug-on-error, and |
5225 | sometimes it's simply wrong to wrap (e.g. when called from | |
5226 | accept-process-output). */ | |
dd97db06 KH |
5227 | internal_condition_case_1 (read_process_output_call, |
5228 | Fcons (outstream, | |
5229 | Fcons (proc, Fcons (text, Qnil))), | |
5230 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5231 | read_process_output_error_handler); | |
4da2f5be RS |
5232 | |
5233 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5234 | restore_search_regs (); |
4da2f5be | 5235 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5236 | |
bbce7d72 RS |
5237 | /* Restore waiting_for_user_input_p as it was |
5238 | when we were called, in case the filter clobbered it. */ | |
5239 | waiting_for_user_input_p = waiting; | |
5240 | ||
7973cfa8 RS |
5241 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5242 | because we might have changed minor modes or other things | |
5243 | that affect key bindings. */ | |
dfc21838 RS |
5244 | if (! EQ (Fcurrent_buffer (), obuffer) |
5245 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5246 | #endif |
927e08be RS |
5247 | /* But do it only if the caller is actually going to read events. |
5248 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5249 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5250 | if (waiting_for_user_input_p == -1) |
5251 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5252 | } |
5253 | ||
5254 | /* If no filter, write into buffer if it isn't dead. */ | |
e578f381 | 5255 | else if (!NILP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
d0d6b7c5 | 5256 | { |
b0310da4 | 5257 | Lisp_Object old_read_only; |
d311d28c PE |
5258 | ptrdiff_t old_begv, old_zv; |
5259 | ptrdiff_t old_begv_byte, old_zv_byte; | |
5260 | ptrdiff_t before, before_byte; | |
5261 | ptrdiff_t opoint_byte; | |
ed7a4b2d | 5262 | Lisp_Object text; |
926b7e5e | 5263 | struct buffer *b; |
30c78175 | 5264 | |
4d2b044c | 5265 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5266 | opoint = PT; |
d8a2934e | 5267 | opoint_byte = PT_BYTE; |
4b4deea2 | 5268 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5269 | old_begv = BEGV; |
5270 | old_zv = ZV; | |
d8a2934e RS |
5271 | old_begv_byte = BEGV_BYTE; |
5272 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5273 | |
39eb03f1 | 5274 | bset_read_only (current_buffer, Qnil); |
d0d6b7c5 JB |
5275 | |
5276 | /* Insert new output into buffer | |
5277 | at the current end-of-output marker, | |
5278 | thus preserving logical ordering of input and output. */ | |
4d2b044c | 5279 | if (XMARKER (p->mark)->buffer) |
3193acd2 | 5280 | SET_PT_BOTH (clip_to_bounds (BEGV, |
4d2b044c | 5281 | marker_position (p->mark), ZV), |
3193acd2 | 5282 | clip_to_bounds (BEGV_BYTE, |
4d2b044c | 5283 | marker_byte_position (p->mark), |
d8a2934e | 5284 | ZV_BYTE)); |
d0d6b7c5 | 5285 | else |
d8a2934e | 5286 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5287 | before = PT; |
d8a2934e | 5288 | before_byte = PT_BYTE; |
b0310da4 JB |
5289 | |
5290 | /* If the output marker is outside of the visible region, save | |
5291 | the restriction and widen. */ | |
6ec8bbd2 | 5292 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5293 | Fwiden (); |
5294 | ||
400a67ff | 5295 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 KH |
5296 | text = coding->dst_object; |
5297 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5298 | /* A new coding system might be found. See the comment in the |
5299 | similar code in the previous `if' block. */ | |
4d2b044c | 5300 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5301 | { |
6a09a33b | 5302 | pset_decode_coding_system (p, Vlast_coding_system_used); |
4d2b044c | 5303 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5304 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5305 | { |
6a09a33b PE |
5306 | pset_encode_coding_system |
5307 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
4d2b044c | 5308 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5309 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5310 | } |
5311 | } | |
dd8c7a53 KH |
5312 | if (coding->carryover_bytes > 0) |
5313 | { | |
4d2b044c | 5314 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
6a09a33b | 5315 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5316 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5317 | coding->carryover_bytes); |
8c406a9b | 5318 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5319 | } |
d69864bf | 5320 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5321 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5322 | != ! STRING_MULTIBYTE (text)) |
5323 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5324 | ? Fstring_as_unibyte (text) |
03f04413 | 5325 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5326 | /* Insert before markers in case we are inserting where |
5327 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5328 | insert_from_string_before_markers (text, 0, 0, |
5329 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5330 | |
926b7e5e GM |
5331 | /* Make sure the process marker's position is valid when the |
5332 | process buffer is changed in the signal_after_change above. | |
5333 | W3 is known to do that. */ | |
4d2b044c DA |
5334 | if (BUFFERP (p->buffer) |
5335 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5336 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
926b7e5e | 5337 | else |
4d2b044c | 5338 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
b0310da4 | 5339 | |
d0d6b7c5 JB |
5340 | update_mode_lines++; |
5341 | ||
12ca5cdf RS |
5342 | /* Make sure opoint and the old restrictions |
5343 | float ahead of any new text just as point would. */ | |
5344 | if (opoint >= before) | |
d8a2934e RS |
5345 | { |
5346 | opoint += PT - before; | |
5347 | opoint_byte += PT_BYTE - before_byte; | |
5348 | } | |
12ca5cdf | 5349 | if (old_begv > before) |
d8a2934e RS |
5350 | { |
5351 | old_begv += PT - before; | |
5352 | old_begv_byte += PT_BYTE - before_byte; | |
5353 | } | |
12ca5cdf | 5354 | if (old_zv >= before) |
d8a2934e RS |
5355 | { |
5356 | old_zv += PT - before; | |
5357 | old_zv_byte += PT_BYTE - before_byte; | |
5358 | } | |
12ca5cdf | 5359 | |
b0310da4 | 5360 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5361 | if (old_begv != BEGV || old_zv != ZV) |
5362 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5363 | |
30c78175 | 5364 | |
39eb03f1 | 5365 | bset_read_only (current_buffer, old_read_only); |
d8a2934e | 5366 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5367 | } |
3a4fa2f2 SM |
5368 | /* Handling the process output should not deactivate the mark. */ |
5369 | Vdeactivate_mark = odeactivate; | |
5370 | ||
5371 | unbind_to (count, Qnil); | |
1d2fc612 | 5372 | return nbytes; |
d0d6b7c5 | 5373 | } |
d0d6b7c5 JB |
5374 | \f |
5375 | /* Sending data to subprocess */ | |
5376 | ||
20ca2e94 TN |
5377 | /* In send_process, when a write fails temporarily, |
5378 | wait_reading_process_output is called. It may execute user code, | |
5379 | e.g. timers, that attempts to write new data to the same process. | |
5380 | We must ensure that data is sent in the right order, and not | |
5381 | interspersed half-completed with other writes (Bug#10815). This is | |
5382 | handled by the write_queue element of struct process. It is a list | |
5383 | with each entry having the form | |
5384 | ||
5385 | (string . (offset . length)) | |
5386 | ||
5387 | where STRING is a lisp string, OFFSET is the offset into the | |
5388 | string's byte sequence from which we should begin to send, and | |
5389 | LENGTH is the number of bytes left to send. */ | |
5390 | ||
5391 | /* Create a new entry in write_queue. | |
5392 | INPUT_OBJ should be a buffer, string Qt, or Qnil. | |
5393 | BUF is a pointer to the string sequence of the input_obj or a C | |
5394 | string in case of Qt or Qnil. */ | |
5395 | ||
5396 | static void | |
5397 | write_queue_push (struct Lisp_Process *p, Lisp_Object input_obj, | |
7ea2b339 | 5398 | const char *buf, ptrdiff_t len, int front) |
20ca2e94 | 5399 | { |
7ea2b339 | 5400 | ptrdiff_t offset; |
20ca2e94 TN |
5401 | Lisp_Object entry, obj; |
5402 | ||
5403 | if (STRINGP (input_obj)) | |
5404 | { | |
5405 | offset = buf - SSDATA (input_obj); | |
5406 | obj = input_obj; | |
5407 | } | |
5408 | else | |
5409 | { | |
5410 | offset = 0; | |
5411 | obj = make_unibyte_string (buf, len); | |
5412 | } | |
5413 | ||
5414 | entry = Fcons (obj, Fcons (make_number (offset), make_number (len))); | |
5415 | ||
5416 | if (front) | |
6a09a33b | 5417 | pset_write_queue (p, Fcons (entry, p->write_queue)); |
20ca2e94 | 5418 | else |
6a09a33b | 5419 | pset_write_queue (p, nconc2 (p->write_queue, Fcons (entry, Qnil))); |
20ca2e94 TN |
5420 | } |
5421 | ||
5422 | /* Remove the first element in the write_queue of process P, put its | |
5423 | contents in OBJ, BUF and LEN, and return non-zero. If the | |
5424 | write_queue is empty, return zero. */ | |
5425 | ||
5426 | static int | |
5427 | write_queue_pop (struct Lisp_Process *p, Lisp_Object *obj, | |
7ea2b339 | 5428 | const char **buf, ptrdiff_t *len) |
20ca2e94 TN |
5429 | { |
5430 | Lisp_Object entry, offset_length; | |
7ea2b339 | 5431 | ptrdiff_t offset; |
20ca2e94 | 5432 | |
4d2b044c | 5433 | if (NILP (p->write_queue)) |
20ca2e94 TN |
5434 | return 0; |
5435 | ||
4d2b044c | 5436 | entry = XCAR (p->write_queue); |
6a09a33b | 5437 | pset_write_queue (p, XCDR (p->write_queue)); |
20ca2e94 TN |
5438 | |
5439 | *obj = XCAR (entry); | |
5440 | offset_length = XCDR (entry); | |
5441 | ||
5442 | *len = XINT (XCDR (offset_length)); | |
5443 | offset = XINT (XCAR (offset_length)); | |
7ea2b339 | 5444 | *buf = SSDATA (*obj) + offset; |
20ca2e94 TN |
5445 | |
5446 | return 1; | |
5447 | } | |
5448 | ||
4556b700 RS |
5449 | /* Send some data to process PROC. |
5450 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5451 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5452 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5453 | |
a92e4183 KH |
5454 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5455 | for encoding before it is sent. | |
1fb0098c GM |
5456 | |
5457 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5458 | |
ff6daed3 | 5459 | static void |
4d7e6e51 PE |
5460 | send_process (Lisp_Object proc, const char *buf, ptrdiff_t len, |
5461 | Lisp_Object object) | |
d0d6b7c5 | 5462 | { |
6b61353c | 5463 | struct Lisp_Process *p = XPROCESS (proc); |
368f4090 | 5464 | ssize_t rv; |
0fa1789e | 5465 | struct coding_system *coding; |
6044e593 | 5466 | |
6bfd98e7 | 5467 | if (p->raw_status_new) |
6b61353c | 5468 | update_status (p); |
4d2b044c DA |
5469 | if (! EQ (p->status, Qrun)) |
5470 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5471 | if (p->outfd < 0) |
4d2b044c | 5472 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5473 | |
60f0fb11 | 5474 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5475 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5476 | |
ed7a4b2d KH |
5477 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5478 | || (BUFFERP (object) | |
4b4deea2 | 5479 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5480 | || EQ (object, Qt)) |
278bfdd6 | 5481 | { |
6a09a33b PE |
5482 | pset_encode_coding_system |
5483 | (p, complement_process_encoding_system (p->encode_coding_system)); | |
4d2b044c | 5484 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
fcaf8878 KH |
5485 | { |
5486 | /* The coding system for encoding was changed to raw-text | |
5487 | because we sent a unibyte text previously. Now we are | |
5488 | sending a multibyte text, thus we must encode it by the | |
5489 | original coding system specified for the current process. | |
5490 | ||
da6062e6 PE |
5491 | Another reason we come here is that the coding system |
5492 | was just complemented and a new one was returned by | |
fcaf8878 | 5493 | complement_process_encoding_system. */ |
4d2b044c DA |
5494 | setup_coding_system (p->encode_coding_system, coding); |
5495 | Vlast_coding_system_used = p->encode_coding_system; | |
fcaf8878 | 5496 | } |
e08bbb84 | 5497 | coding->src_multibyte = 1; |
278bfdd6 KH |
5498 | } |
5499 | else | |
5500 | { | |
a0241d01 | 5501 | coding->src_multibyte = 0; |
a92e4183 KH |
5502 | /* For sending a unibyte text, character code conversion should |
5503 | not take place but EOL conversion should. So, setup raw-text | |
5504 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5505 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5506 | { |
5507 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5508 | { | |
5509 | /* But, before changing the coding, we must flush out data. */ | |
5510 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5511 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5512 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5513 | } |
5bbf78c1 KH |
5514 | setup_coding_system (raw_text_coding_system |
5515 | (Vlast_coding_system_used), | |
5516 | coding); | |
e08bbb84 | 5517 | coding->src_multibyte = 0; |
a92e4183 | 5518 | } |
278bfdd6 | 5519 | } |
a4a37e65 KH |
5520 | coding->dst_multibyte = 0; |
5521 | ||
ed7a4b2d | 5522 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5523 | { |
5bbf78c1 | 5524 | coding->dst_object = Qt; |
ed7a4b2d | 5525 | if (BUFFERP (object)) |
0fa1789e | 5526 | { |
d311d28c PE |
5527 | ptrdiff_t from_byte, from, to; |
5528 | ptrdiff_t save_pt, save_pt_byte; | |
5bbf78c1 KH |
5529 | struct buffer *cur = current_buffer; |
5530 | ||
5531 | set_buffer_internal (XBUFFER (object)); | |
5532 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5533 | ||
400a67ff | 5534 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5535 | from = BYTE_TO_CHAR (from_byte); |
5536 | to = BYTE_TO_CHAR (from_byte + len); | |
5537 | TEMP_SET_PT_BOTH (from, from_byte); | |
5538 | encode_coding_object (coding, object, from, from_byte, | |
5539 | to, from_byte + len, Qt); | |
5540 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5541 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5542 | } |
5543 | else if (STRINGP (object)) | |
5544 | { | |
550c8289 KH |
5545 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5546 | SBYTES (object), Qt); | |
0fa1789e | 5547 | } |
5bbf78c1 | 5548 | else |
452294c2 | 5549 | { |
5bbf78c1 KH |
5550 | coding->dst_object = make_unibyte_string (buf, len); |
5551 | coding->produced = len; | |
452294c2 | 5552 | } |
ed7a4b2d | 5553 | |
e7fbaa65 | 5554 | len = coding->produced; |
347f3cd3 | 5555 | object = coding->dst_object; |
400a67ff | 5556 | buf = SSDATA (object); |
0fa1789e | 5557 | } |
d0d6b7c5 | 5558 | |
4556b700 RS |
5559 | if (pty_max_bytes == 0) |
5560 | { | |
5561 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5562 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5563 | if (pty_max_bytes < 0) |
5564 | pty_max_bytes = 250; | |
5565 | #else | |
5566 | pty_max_bytes = 250; | |
5567 | #endif | |
5568 | /* Deduct one, to leave space for the eof. */ | |
5569 | pty_max_bytes--; | |
5570 | } | |
5571 | ||
4d7e6e51 PE |
5572 | /* If there is already data in the write_queue, put the new data |
5573 | in the back of queue. Otherwise, ignore it. */ | |
5574 | if (!NILP (p->write_queue)) | |
5575 | write_queue_push (p, object, buf, len, 0); | |
20ca2e94 | 5576 | |
4d7e6e51 PE |
5577 | do /* while !NILP (p->write_queue) */ |
5578 | { | |
5579 | ptrdiff_t cur_len = -1; | |
5580 | const char *cur_buf; | |
5581 | Lisp_Object cur_object; | |
20ca2e94 | 5582 | |
4d7e6e51 PE |
5583 | /* If write_queue is empty, ignore it. */ |
5584 | if (!write_queue_pop (p, &cur_object, &cur_buf, &cur_len)) | |
0daad115 | 5585 | { |
4d7e6e51 PE |
5586 | cur_len = len; |
5587 | cur_buf = buf; | |
5588 | cur_object = object; | |
5589 | } | |
20ca2e94 | 5590 | |
4d7e6e51 PE |
5591 | while (cur_len > 0) |
5592 | { | |
5593 | /* Send this batch, using one or more write calls. */ | |
5594 | ptrdiff_t written = 0; | |
5595 | int outfd = p->outfd; | |
5596 | #ifdef DATAGRAM_SOCKETS | |
5597 | if (DATAGRAM_CHAN_P (outfd)) | |
20ca2e94 | 5598 | { |
4d7e6e51 PE |
5599 | rv = sendto (outfd, cur_buf, cur_len, |
5600 | 0, datagram_address[outfd].sa, | |
5601 | datagram_address[outfd].len); | |
5602 | if (0 <= rv) | |
5603 | written = rv; | |
5604 | else if (errno == EMSGSIZE) | |
5605 | report_file_error ("sending datagram", Fcons (proc, Qnil)); | |
20ca2e94 | 5606 | } |
4d7e6e51 | 5607 | else |
e690ca94 | 5608 | #endif |
4d7e6e51 | 5609 | { |
8af55556 | 5610 | #ifdef HAVE_GNUTLS |
4d7e6e51 PE |
5611 | if (p->gnutls_p) |
5612 | written = emacs_gnutls_write (p, cur_buf, cur_len); | |
5613 | else | |
8af55556 | 5614 | #endif |
4d7e6e51 PE |
5615 | written = emacs_write (outfd, cur_buf, cur_len); |
5616 | rv = (written ? 0 : -1); | |
6b61353c | 5617 | #ifdef ADAPTIVE_READ_BUFFERING |
4d7e6e51 PE |
5618 | if (p->read_output_delay > 0 |
5619 | && p->adaptive_read_buffering == 1) | |
5620 | { | |
5621 | p->read_output_delay = 0; | |
5622 | process_output_delay_count--; | |
5623 | p->read_output_skip = 0; | |
6b61353c | 5624 | } |
4d7e6e51 PE |
5625 | #endif |
5626 | } | |
4556b700 | 5627 | |
4d7e6e51 PE |
5628 | if (rv < 0) |
5629 | { | |
5630 | if (0 | |
d0d6b7c5 | 5631 | #ifdef EWOULDBLOCK |
4d7e6e51 | 5632 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5633 | #endif |
5634 | #ifdef EAGAIN | |
4d7e6e51 | 5635 | || errno == EAGAIN |
d0d6b7c5 | 5636 | #endif |
4d7e6e51 PE |
5637 | ) |
5638 | /* Buffer is full. Wait, accepting input; | |
5639 | that may allow the program | |
5640 | to finish doing output and read more. */ | |
5641 | { | |
3433b6bd | 5642 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
4d7e6e51 PE |
5643 | /* A gross hack to work around a bug in FreeBSD. |
5644 | In the following sequence, read(2) returns | |
5645 | bogus data: | |
5646 | ||
5647 | write(2) 1022 bytes | |
5648 | write(2) 954 bytes, get EAGAIN | |
5649 | read(2) 1024 bytes in process_read_output | |
5650 | read(2) 11 bytes in process_read_output | |
5651 | ||
5652 | That is, read(2) returns more bytes than have | |
5653 | ever been written successfully. The 1033 bytes | |
5654 | read are the 1022 bytes written successfully | |
5655 | after processing (for example with CRs added if | |
5656 | the terminal is set up that way which it is | |
5657 | here). The same bytes will be seen again in a | |
5658 | later read(2), without the CRs. */ | |
5659 | ||
5660 | if (errno == EAGAIN) | |
5661 | { | |
5662 | int flags = FWRITE; | |
5663 | ioctl (p->outfd, TIOCFLUSH, &flags); | |
5664 | } | |
3433b6bd | 5665 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5666 | |
4d7e6e51 PE |
5667 | /* Put what we should have written in wait_queue. */ |
5668 | write_queue_push (p, cur_object, cur_buf, cur_len, 1); | |
5669 | wait_reading_process_output (0, 20 * 1000 * 1000, | |
5670 | 0, 0, Qnil, NULL, 0); | |
5671 | /* Reread queue, to see what is left. */ | |
5672 | break; | |
0daad115 | 5673 | } |
4d7e6e51 PE |
5674 | else if (errno == EPIPE) |
5675 | { | |
5676 | p->raw_status_new = 0; | |
5677 | pset_status (p, list2 (Qexit, make_number (256))); | |
5678 | p->tick = ++process_tick; | |
5679 | deactivate_process (proc); | |
5680 | error ("process %s no longer connected to pipe; closed it", | |
5681 | SDATA (p->name)); | |
5682 | } | |
5683 | else | |
5684 | /* This is a real error. */ | |
5685 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
0daad115 | 5686 | } |
4d7e6e51 PE |
5687 | cur_buf += written; |
5688 | cur_len -= written; | |
0daad115 | 5689 | } |
d0d6b7c5 | 5690 | } |
4d7e6e51 | 5691 | while (!NILP (p->write_queue)); |
d0d6b7c5 JB |
5692 | } |
5693 | ||
5694 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5695 | 3, 3, 0, |
5696 | doc: /* Send current contents of region as input to PROCESS. | |
5697 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5698 | nil, indicating the current buffer's process. | |
5699 | Called from program, takes three arguments, PROCESS, START and END. | |
5700 | If the region is more than 500 characters long, | |
5701 | it is sent in several bunches. This may happen even for shorter regions. | |
5702 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5703 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5704 | { |
5705 | Lisp_Object proc; | |
d311d28c | 5706 | ptrdiff_t start1, end1; |
d0d6b7c5 JB |
5707 | |
5708 | proc = get_process (process); | |
5709 | validate_region (&start, &end); | |
1b234f64 KH |
5710 | |
5711 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5712 | move_gap (XINT (start)); | |
5713 | ||
5714 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5715 | end1 = CHAR_TO_BYTE (XINT (end)); | |
400a67ff | 5716 | send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1, |
1b234f64 KH |
5717 | Fcurrent_buffer ()); |
5718 | ||
d0d6b7c5 JB |
5719 | return Qnil; |
5720 | } | |
5721 | ||
5722 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5723 | 2, 2, 0, |
5724 | doc: /* Send PROCESS the contents of STRING as input. | |
5725 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5726 | nil, indicating the current buffer's process. | |
5727 | If STRING is more than 500 characters long, | |
5728 | it is sent in several bunches. This may happen even for shorter strings. | |
5729 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5730 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5731 | { |
5732 | Lisp_Object proc; | |
b7826503 | 5733 | CHECK_STRING (string); |
d0d6b7c5 | 5734 | proc = get_process (process); |
400a67ff | 5735 | send_process (proc, SSDATA (string), |
1b234f64 | 5736 | SBYTES (string), string); |
d0d6b7c5 JB |
5737 | return Qnil; |
5738 | } | |
5739 | \f | |
16782258 JD |
5740 | /* Return the foreground process group for the tty/pty that |
5741 | the process P uses. */ | |
dde14581 | 5742 | static pid_t |
d3da34e0 | 5743 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 | 5744 | { |
dde14581 | 5745 | pid_t gid = -1; |
16782258 | 5746 | |
f3d9532b | 5747 | #ifdef TIOCGPGRP |
4d2b044c | 5748 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5749 | { |
5750 | int fd; | |
5751 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5752 | master side. Try the slave side. */ | |
4d2b044c | 5753 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5754 | |
5755 | if (fd != -1) | |
5756 | { | |
5757 | ioctl (fd, TIOCGPGRP, &gid); | |
5758 | emacs_close (fd); | |
5759 | } | |
5760 | } | |
5761 | #endif /* defined (TIOCGPGRP ) */ | |
5762 | ||
5763 | return gid; | |
5764 | } | |
5765 | ||
b81ea5ef RS |
5766 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5767 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5768 | doc: /* Return t if PROCESS has given the terminal to a child. |
5769 | If the operating system does not make it possible to find out, | |
5770 | return t unconditionally. */) | |
5842a27b | 5771 | (Lisp_Object process) |
b81ea5ef RS |
5772 | { |
5773 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5774 | in a way that will cause returning t. */ | |
dde14581 | 5775 | pid_t gid; |
b81ea5ef RS |
5776 | Lisp_Object proc; |
5777 | struct Lisp_Process *p; | |
5778 | ||
5779 | proc = get_process (process); | |
5780 | p = XPROCESS (proc); | |
5781 | ||
4d2b044c | 5782 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5783 | error ("Process %s is not a subprocess", |
4d2b044c | 5784 | SDATA (p->name)); |
60f0fb11 | 5785 | if (p->infd < 0) |
b81ea5ef | 5786 | error ("Process %s is not active", |
4d2b044c | 5787 | SDATA (p->name)); |
b81ea5ef | 5788 | |
16782258 | 5789 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5790 | |
6bfd98e7 | 5791 | if (gid == p->pid) |
b81ea5ef RS |
5792 | return Qnil; |
5793 | return Qt; | |
5794 | } | |
5795 | \f | |
d0d6b7c5 | 5796 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5797 | If CURRENT_GROUP is t, that means send to the process group |
5798 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5799 | This is used for various commands in shell mode. |
b81ea5ef RS |
5800 | If CURRENT_GROUP is lambda, that means send to the process group |
5801 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5802 | ||
d0d6b7c5 | 5803 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5804 | right away. |
5805 | ||
5806 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5807 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5808 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5809 | |
f9738840 | 5810 | static void |
d3da34e0 JB |
5811 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5812 | int nomsg) | |
d0d6b7c5 JB |
5813 | { |
5814 | Lisp_Object proc; | |
5815 | register struct Lisp_Process *p; | |
dde14581 | 5816 | pid_t gid; |
d0d6b7c5 JB |
5817 | int no_pgrp = 0; |
5818 | ||
5819 | proc = get_process (process); | |
5820 | p = XPROCESS (proc); | |
5821 | ||
4d2b044c | 5822 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5823 | error ("Process %s is not a subprocess", |
4d2b044c | 5824 | SDATA (p->name)); |
60f0fb11 | 5825 | if (p->infd < 0) |
d0d6b7c5 | 5826 | error ("Process %s is not active", |
4d2b044c | 5827 | SDATA (p->name)); |
d0d6b7c5 | 5828 | |
60f0fb11 | 5829 | if (!p->pty_flag) |
d0d6b7c5 JB |
5830 | current_group = Qnil; |
5831 | ||
d0d6b7c5 | 5832 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5833 | if (NILP (current_group)) |
5834 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5835 | gid = p->pid; |
2af70a0c | 5836 | else |
d0d6b7c5 | 5837 | { |
b0310da4 | 5838 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5839 | /* If possible, send signals to the entire pgrp |
5840 | by sending an input character to it. */ | |
b0310da4 | 5841 | |
6be429b1 | 5842 | struct termios t; |
7f916a36 RS |
5843 | cc_t *sig_char = NULL; |
5844 | ||
60f0fb11 | 5845 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5846 | |
5847 | switch (signo) | |
5848 | { | |
5849 | case SIGINT: | |
7f916a36 RS |
5850 | sig_char = &t.c_cc[VINTR]; |
5851 | break; | |
6be429b1 JB |
5852 | |
5853 | case SIGQUIT: | |
7f916a36 RS |
5854 | sig_char = &t.c_cc[VQUIT]; |
5855 | break; | |
6be429b1 JB |
5856 | |
5857 | case SIGTSTP: | |
d0adf46f | 5858 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5859 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5860 | #else |
7f916a36 | 5861 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5862 | #endif |
7f916a36 | 5863 | break; |
6be429b1 JB |
5864 | } |
5865 | ||
ca4313d5 | 5866 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc | 5867 | { |
f990b4e5 | 5868 | send_process (proc, (char *) sig_char, 1, Qnil); |
f1c206fc RS |
5869 | return; |
5870 | } | |
5871 | /* If we can't send the signal with a character, | |
5872 | fall through and send it another way. */ | |
f1c206fc RS |
5873 | |
5874 | /* The code above may fall through if it can't | |
5875 | handle the signal. */ | |
20505336 | 5876 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5877 | |
177c0ea7 | 5878 | #ifdef TIOCGPGRP |
2af70a0c | 5879 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5880 | Otherwise, use the pty to get the pgrp. |
5881 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5882 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5883 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5884 | His patch indicates that if TIOCGPGRP returns an error, then |
5885 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5886 | |
16782258 | 5887 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5888 | |
16782258 JD |
5889 | if (gid == -1) |
5890 | /* If we can't get the information, assume | |
5891 | the shell owns the tty. */ | |
6bfd98e7 | 5892 | gid = p->pid; |
2af70a0c RS |
5893 | |
5894 | /* It is not clear whether anything really can set GID to -1. | |
5895 | Perhaps on some system one of those ioctls can or could do so. | |
5896 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5897 | if (gid == -1) |
5898 | no_pgrp = 1; | |
b0310da4 | 5899 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5900 | /* Can't select pgrps on this system, so we know that |
5901 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5902 | gid = p->pid; |
301c3fe4 | 5903 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5904 | |
5905 | /* If current_group is lambda, and the shell owns the terminal, | |
5906 | don't send any signal. */ | |
6bfd98e7 | 5907 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5908 | return; |
d0d6b7c5 | 5909 | } |
d0d6b7c5 JB |
5910 | |
5911 | switch (signo) | |
5912 | { | |
5913 | #ifdef SIGCONT | |
5914 | case SIGCONT: | |
6bfd98e7 | 5915 | p->raw_status_new = 0; |
6a09a33b | 5916 | pset_status (p, Qrun); |
60f0fb11 | 5917 | p->tick = ++process_tick; |
d0d6b7c5 | 5918 | if (!nomsg) |
e42bdf01 CY |
5919 | { |
5920 | status_notify (NULL); | |
5921 | redisplay_preserve_echo_area (13); | |
5922 | } | |
d0d6b7c5 | 5923 | break; |
301c3fe4 | 5924 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 5925 | case SIGINT: |
d0d6b7c5 | 5926 | case SIGQUIT: |
d0d6b7c5 | 5927 | case SIGKILL: |
60f0fb11 | 5928 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5929 | break; |
5930 | } | |
5931 | ||
5932 | /* If we don't have process groups, send the signal to the immediate | |
5933 | subprocess. That isn't really right, but it's better than any | |
5934 | obvious alternative. */ | |
5935 | if (no_pgrp) | |
5936 | { | |
6bfd98e7 | 5937 | kill (p->pid, signo); |
d0d6b7c5 JB |
5938 | return; |
5939 | } | |
5940 | ||
5941 | /* gid may be a pid, or minus a pgrp's number */ | |
5942 | #ifdef TIOCSIGSEND | |
5943 | if (!NILP (current_group)) | |
16782258 | 5944 | { |
60f0fb11 | 5945 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
5946 | EMACS_KILLPG (gid, signo); |
5947 | } | |
d0d6b7c5 JB |
5948 | else |
5949 | { | |
6bfd98e7 | 5950 | gid = - p->pid; |
d0d6b7c5 JB |
5951 | kill (gid, signo); |
5952 | } | |
301c3fe4 | 5953 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5954 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5955 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5956 | } |
5957 | ||
5958 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5959 | doc: /* Interrupt process PROCESS. |
5960 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5961 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5962 | Second arg CURRENT-GROUP non-nil means send signal to |
5963 | the current process-group of the process's controlling terminal | |
5964 | rather than to the process's own process group. | |
5965 | If the process is a shell, this means interrupt current subjob | |
5966 | rather than the shell. | |
5967 | ||
5968 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5969 | don't send the signal. */) | |
5842a27b | 5970 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5971 | { |
5972 | process_send_signal (process, SIGINT, current_group, 0); | |
5973 | return process; | |
5974 | } | |
5975 | ||
5976 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5977 | doc: /* Kill process PROCESS. May be process or name of one. |
5978 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5979 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5980 | { |
5981 | process_send_signal (process, SIGKILL, current_group, 0); | |
5982 | return process; | |
5983 | } | |
5984 | ||
5985 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5986 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5987 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5988 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5989 | { |
5990 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5991 | return process; | |
5992 | } | |
5993 | ||
5994 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5995 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5996 | See function `interrupt-process' for more details on usage. |
d888760c GM |
5997 | If PROCESS is a network or serial process, inhibit handling of incoming |
5998 | traffic. */) | |
5842a27b | 5999 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6000 | { |
d888760c | 6001 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6002 | { |
6003 | struct Lisp_Process *p; | |
177c0ea7 | 6004 | |
e690ca94 | 6005 | p = XPROCESS (process); |
4d2b044c | 6006 | if (NILP (p->command) |
60f0fb11 | 6007 | && p->infd >= 0) |
e690ca94 | 6008 | { |
60f0fb11 SM |
6009 | FD_CLR (p->infd, &input_wait_mask); |
6010 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 | 6011 | } |
6a09a33b | 6012 | pset_command (p, Qt); |
e690ca94 KS |
6013 | return process; |
6014 | } | |
d0d6b7c5 | 6015 | #ifndef SIGTSTP |
a9a73d6c | 6016 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6017 | #else |
6018 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6019 | #endif | |
6020 | return process; | |
6021 | } | |
6022 | ||
6023 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6024 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6025 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6026 | If PROCESS is a network or serial process, resume handling of incoming |
6027 | traffic. */) | |
5842a27b | 6028 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6029 | { |
d888760c | 6030 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6031 | { |
6032 | struct Lisp_Process *p; | |
6033 | ||
6034 | p = XPROCESS (process); | |
4d2b044c | 6035 | if (EQ (p->command, Qt) |
60f0fb11 | 6036 | && p->infd >= 0 |
4d2b044c | 6037 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
e690ca94 | 6038 | { |
60f0fb11 SM |
6039 | FD_SET (p->infd, &input_wait_mask); |
6040 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6041 | #ifdef WINDOWSNT |
6042 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6043 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 6044 | #else /* not WINDOWSNT */ |
d888760c | 6045 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 6046 | #endif /* not WINDOWSNT */ |
e690ca94 | 6047 | } |
6a09a33b | 6048 | pset_command (p, Qnil); |
e690ca94 KS |
6049 | return process; |
6050 | } | |
d0d6b7c5 JB |
6051 | #ifdef SIGCONT |
6052 | process_send_signal (process, SIGCONT, current_group, 0); | |
6053 | #else | |
a9a73d6c | 6054 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6055 | #endif |
6056 | return process; | |
6057 | } | |
6058 | ||
6059 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6060 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6061 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6062 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6063 | process to signal; in this case, the process need not be a child of |
6064 | this Emacs. | |
fdb82f93 | 6065 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6066 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6067 | { |
6bfd98e7 | 6068 | pid_t pid; |
cdd5ea86 | 6069 | |
cdd5ea86 KS |
6070 | if (STRINGP (process)) |
6071 | { | |
d311d28c PE |
6072 | Lisp_Object tem = Fget_process (process); |
6073 | if (NILP (tem)) | |
cdd5ea86 | 6074 | { |
d44287d4 PE |
6075 | Lisp_Object process_number = |
6076 | string_to_number (SSDATA (process), 10, 1); | |
6077 | if (INTEGERP (process_number) || FLOATP (process_number)) | |
6078 | tem = process_number; | |
cdd5ea86 KS |
6079 | } |
6080 | process = tem; | |
6081 | } | |
d44287d4 | 6082 | else if (!NUMBERP (process)) |
cdd5ea86 | 6083 | process = get_process (process); |
177c0ea7 | 6084 | |
cdd5ea86 KS |
6085 | if (NILP (process)) |
6086 | return process; | |
6087 | ||
d83cf4cc PE |
6088 | if (NUMBERP (process)) |
6089 | CONS_TO_INTEGER (process, pid_t, pid); | |
d44287d4 PE |
6090 | else |
6091 | { | |
6092 | CHECK_PROCESS (process); | |
6093 | pid = XPROCESS (process)->pid; | |
6094 | if (pid <= 0) | |
4d2b044c | 6095 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
d44287d4 | 6096 | } |
4766242d | 6097 | |
59324b1d | 6098 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6099 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6100 | XSETINT (sigcode, VALUE) |
6101 | ||
6102 | if (INTEGERP (sigcode)) | |
d311d28c | 6103 | CHECK_TYPE_RANGED_INTEGER (int, sigcode); |
4766242d RS |
6104 | else |
6105 | { | |
25a48bd0 | 6106 | char *name; |
4766242d | 6107 | |
b7826503 | 6108 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6109 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6110 | |
ed3751c8 | 6111 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6112 | name += 3; |
6113 | ||
4766242d RS |
6114 | if (0) |
6115 | ; | |
59324b1d KS |
6116 | #ifdef SIGUSR1 |
6117 | parse_signal ("usr1", SIGUSR1); | |
6118 | #endif | |
6119 | #ifdef SIGUSR2 | |
6120 | parse_signal ("usr2", SIGUSR2); | |
6121 | #endif | |
59324b1d | 6122 | parse_signal ("term", SIGTERM); |
4766242d | 6123 | #ifdef SIGHUP |
59324b1d | 6124 | parse_signal ("hup", SIGHUP); |
4766242d | 6125 | #endif |
59324b1d | 6126 | parse_signal ("int", SIGINT); |
4766242d | 6127 | #ifdef SIGQUIT |
59324b1d | 6128 | parse_signal ("quit", SIGQUIT); |
4766242d | 6129 | #endif |
59324b1d | 6130 | parse_signal ("ill", SIGILL); |
59324b1d | 6131 | parse_signal ("abrt", SIGABRT); |
4766242d | 6132 | #ifdef SIGEMT |
59324b1d | 6133 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6134 | #endif |
6135 | #ifdef SIGKILL | |
59324b1d | 6136 | parse_signal ("kill", SIGKILL); |
4766242d | 6137 | #endif |
59324b1d | 6138 | parse_signal ("fpe", SIGFPE); |
4766242d | 6139 | #ifdef SIGBUS |
59324b1d | 6140 | parse_signal ("bus", SIGBUS); |
4766242d | 6141 | #endif |
59324b1d | 6142 | parse_signal ("segv", SIGSEGV); |
4766242d | 6143 | #ifdef SIGSYS |
59324b1d | 6144 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6145 | #endif |
6146 | #ifdef SIGPIPE | |
59324b1d | 6147 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6148 | #endif |
6149 | #ifdef SIGALRM | |
59324b1d | 6150 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6151 | #endif |
6152 | #ifdef SIGURG | |
59324b1d | 6153 | parse_signal ("urg", SIGURG); |
4766242d RS |
6154 | #endif |
6155 | #ifdef SIGSTOP | |
59324b1d | 6156 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6157 | #endif |
6158 | #ifdef SIGTSTP | |
59324b1d | 6159 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6160 | #endif |
6161 | #ifdef SIGCONT | |
59324b1d | 6162 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6163 | #endif |
6164 | #ifdef SIGCHLD | |
59324b1d | 6165 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6166 | #endif |
6167 | #ifdef SIGTTIN | |
59324b1d | 6168 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6169 | #endif |
6170 | #ifdef SIGTTOU | |
59324b1d | 6171 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6172 | #endif |
6173 | #ifdef SIGIO | |
59324b1d | 6174 | parse_signal ("io", SIGIO); |
4766242d RS |
6175 | #endif |
6176 | #ifdef SIGXCPU | |
59324b1d | 6177 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6178 | #endif |
6179 | #ifdef SIGXFSZ | |
59324b1d | 6180 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6181 | #endif |
6182 | #ifdef SIGVTALRM | |
59324b1d | 6183 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6184 | #endif |
6185 | #ifdef SIGPROF | |
59324b1d | 6186 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6187 | #endif |
6188 | #ifdef SIGWINCH | |
59324b1d | 6189 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6190 | #endif |
6191 | #ifdef SIGINFO | |
59324b1d | 6192 | parse_signal ("info", SIGINFO); |
4766242d RS |
6193 | #endif |
6194 | else | |
9fa195a2 | 6195 | error ("Undefined signal name %s", name); |
4766242d RS |
6196 | } |
6197 | ||
59324b1d | 6198 | #undef parse_signal |
4766242d | 6199 | |
6bfd98e7 | 6200 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6201 | } |
6202 | ||
6203 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6204 | doc: /* Make PROCESS see end-of-file in its input. |
6205 | EOF comes after any text already sent to it. | |
6206 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6207 | nil, indicating the current buffer's process. | |
6208 | If PROCESS is a network connection, or is a process communicating | |
6209 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6210 | text to PROCESS after you call this function. |
6211 | If PROCESS is a serial process, wait until all output written to the | |
6212 | process has been transmitted to the serial port. */) | |
5842a27b | 6213 | (Lisp_Object process) |
d0d6b7c5 JB |
6214 | { |
6215 | Lisp_Object proc; | |
de7fbd09 | 6216 | struct coding_system *coding; |
d0d6b7c5 | 6217 | |
e690ca94 KS |
6218 | if (DATAGRAM_CONN_P (process)) |
6219 | return process; | |
6220 | ||
d0d6b7c5 | 6221 | proc = get_process (process); |
60f0fb11 | 6222 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6223 | |
6224 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6225 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 | 6226 | update_status (XPROCESS (proc)); |
4d2b044c DA |
6227 | if (! EQ (XPROCESS (proc)->status, Qrun)) |
6228 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); | |
577d03d5 | 6229 | |
de7fbd09 KH |
6230 | if (CODING_REQUIRE_FLUSHING (coding)) |
6231 | { | |
6232 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6233 | send_process (proc, "", 0, Qnil); | |
6234 | } | |
6235 | ||
60f0fb11 | 6236 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6237 | send_process (proc, "\004", 1, Qnil); |
4d2b044c | 6238 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6239 | { |
a7ebc409 | 6240 | #ifndef WINDOWSNT |
d888760c GM |
6241 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6242 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6243 | #endif /* not WINDOWSNT */ |
d888760c GM |
6244 | /* Do nothing on Windows because writes are blocking. */ |
6245 | } | |
d0d6b7c5 JB |
6246 | else |
6247 | { | |
4525f571 RS |
6248 | int old_outfd, new_outfd; |
6249 | ||
93853f3d | 6250 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6251 | /* If this is a network connection, or socketpair is used |
6252 | for communication with the subprocess, call shutdown to cause EOF. | |
6253 | (In some old system, shutdown to socketpair doesn't work. | |
6254 | Then we just can't win.) */ | |
4d2b044c | 6255 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6256 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6257 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6258 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6259 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6260 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6261 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6262 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6263 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6264 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 | 6265 | if (new_outfd < 0) |
1088b922 | 6266 | emacs_abort (); |
60f0fb11 | 6267 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6268 | |
6269 | if (!proc_encode_coding_system[new_outfd]) | |
6270 | proc_encode_coding_system[new_outfd] | |
23f86fce | 6271 | = xmalloc (sizeof (struct coding_system)); |
ae1d87e2 PE |
6272 | *proc_encode_coding_system[new_outfd] |
6273 | = *proc_encode_coding_system[old_outfd]; | |
72af86bd AS |
6274 | memset (proc_encode_coding_system[old_outfd], 0, |
6275 | sizeof (struct coding_system)); | |
4525f571 | 6276 | |
60f0fb11 | 6277 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6278 | } |
d0d6b7c5 JB |
6279 | return process; |
6280 | } | |
d0d6b7c5 | 6281 | \f |
3fed8ad5 GM |
6282 | /* On receipt of a signal that a child status has changed, loop asking |
6283 | about children with changed statuses until the system says there | |
6284 | are no more. | |
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 | /* Record the changed status of the child process PID with wait status W. */ |
6308 | void | |
6309 | record_child_status_change (pid_t pid, int w) | |
d0d6b7c5 | 6310 | { |
4d7e6e51 | 6311 | #ifdef SIGCHLD |
d0d6b7c5 | 6312 | Lisp_Object proc; |
97ec208f | 6313 | struct Lisp_Process *p; |
20ef56db | 6314 | Lisp_Object tail; |
d0d6b7c5 | 6315 | |
20ef56db | 6316 | /* Find the process that signaled us, and record its status. */ |
d0d6b7c5 | 6317 | |
20ef56db PE |
6318 | /* The process can have been deleted by Fdelete_process. */ |
6319 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) | |
6320 | { | |
6321 | Lisp_Object xpid = XCAR (tail); | |
6322 | if ((INTEGERP (xpid) && pid == XINT (xpid)) | |
6323 | || (FLOATP (xpid) && pid == XFLOAT_DATA (xpid))) | |
a5cfdda8 | 6324 | { |
20ef56db | 6325 | XSETCAR (tail, Qnil); |
4d7e6e51 | 6326 | return; |
a5cfdda8 | 6327 | } |
20ef56db | 6328 | } |
a5cfdda8 | 6329 | |
20ef56db PE |
6330 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ |
6331 | p = 0; | |
6332 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
6333 | { | |
6334 | proc = XCDR (XCAR (tail)); | |
6335 | p = XPROCESS (proc); | |
6336 | if (EQ (p->type, Qreal) && p->pid == pid) | |
6337 | break; | |
d0d6b7c5 | 6338 | p = 0; |
20ef56db | 6339 | } |
177c0ea7 | 6340 | |
20ef56db PE |
6341 | /* Look for an asynchronous process whose pid hasn't been filled |
6342 | in yet. */ | |
6343 | if (! p) | |
6344 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
6345 | { | |
6346 | proc = XCDR (XCAR (tail)); | |
6347 | p = XPROCESS (proc); | |
6348 | if (p->pid == -1) | |
6349 | break; | |
6350 | p = 0; | |
6351 | } | |
177c0ea7 | 6352 | |
20ef56db PE |
6353 | /* Change the status of the process that was found. */ |
6354 | if (p) | |
6355 | { | |
6356 | int clear_desc_flag = 0; | |
e98d950b | 6357 | |
20ef56db PE |
6358 | p->tick = ++process_tick; |
6359 | p->raw_status = w; | |
6360 | p->raw_status_new = 1; | |
6be429b1 | 6361 | |
20ef56db PE |
6362 | /* If process has terminated, stop waiting for its output. */ |
6363 | if ((WIFSIGNALED (w) || WIFEXITED (w)) | |
6364 | && p->infd >= 0) | |
6365 | clear_desc_flag = 1; | |
d0d6b7c5 | 6366 | |
20ef56db PE |
6367 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ |
6368 | if (clear_desc_flag) | |
d0d6b7c5 | 6369 | { |
20ef56db PE |
6370 | FD_CLR (p->infd, &input_wait_mask); |
6371 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
d0d6b7c5 JB |
6372 | } |
6373 | ||
20ef56db PE |
6374 | /* Tell wait_reading_process_output that it needs to wake up and |
6375 | look around. */ | |
6376 | if (input_available_clear_time) | |
6377 | *input_available_clear_time = make_emacs_time (0, 0); | |
6378 | } | |
6379 | /* There was no asynchronous process found for that pid: we have | |
6380 | a synchronous process. */ | |
6381 | else | |
6382 | { | |
6383 | synch_process_alive = 0; | |
6384 | ||
6385 | /* Report the status of the synchronous process. */ | |
6386 | if (WIFEXITED (w)) | |
6387 | synch_process_retcode = WEXITSTATUS (w); | |
6388 | else if (WIFSIGNALED (w)) | |
6389 | synch_process_termsig = WTERMSIG (w); | |
6390 | ||
6391 | /* Tell wait_reading_process_output that it needs to wake up and | |
6392 | look around. */ | |
6393 | if (input_available_clear_time) | |
6394 | *input_available_clear_time = make_emacs_time (0, 0); | |
6395 | } | |
4d7e6e51 | 6396 | #endif |
20ef56db | 6397 | } |
a5cfdda8 | 6398 | |
4d7e6e51 PE |
6399 | #ifdef SIGCHLD |
6400 | ||
20ef56db PE |
6401 | /* On some systems, the SIGCHLD handler must return right away. If |
6402 | any more processes want to signal us, we will get another signal. | |
6403 | Otherwise, loop around to use up all the processes that have | |
6404 | something to tell us. */ | |
4e6277d8 | 6405 | #if (defined WINDOWSNT \ |
8a2a6032 | 6406 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6407 | && !(defined HPUX && defined WNOHANG))) |
20ef56db | 6408 | enum { CAN_HANDLE_MULTIPLE_CHILDREN = 0 }; |
0216c128 EZ |
6409 | #else |
6410 | enum { CAN_HANDLE_MULTIPLE_CHILDREN = 1 }; | |
20ef56db PE |
6411 | #endif |
6412 | ||
6413 | static void | |
6414 | handle_child_signal (int sig) | |
6415 | { | |
4d7e6e51 PE |
6416 | do |
6417 | { | |
6418 | pid_t pid; | |
6419 | int status; | |
6420 | ||
6421 | do | |
6422 | pid = waitpid (-1, &status, WNOHANG | WUNTRACED); | |
6423 | while (pid < 0 && errno == EINTR); | |
6424 | ||
6425 | /* PID == 0 means no processes found, PID == -1 means a real failure. | |
6426 | Either way, we have done all our job. */ | |
6427 | if (pid <= 0) | |
6428 | break; | |
6429 | ||
6430 | record_child_status_change (pid, status); | |
6431 | } | |
6432 | while (CAN_HANDLE_MULTIPLE_CHILDREN); | |
d0d6b7c5 | 6433 | } |
20ef56db PE |
6434 | |
6435 | static void | |
6436 | deliver_child_signal (int sig) | |
6437 | { | |
4d7e6e51 | 6438 | deliver_process_signal (sig, handle_child_signal); |
20ef56db PE |
6439 | } |
6440 | ||
a5cfdda8 | 6441 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6442 | \f |
6443 | ||
6444 | static Lisp_Object | |
d3da34e0 | 6445 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6446 | { |
6a09a33b | 6447 | pset_sentinel (XPROCESS (XCAR (data)), XCDR (data)); |
d0d6b7c5 JB |
6448 | return Qnil; |
6449 | } | |
6450 | ||
3b9a3dfa | 6451 | static Lisp_Object |
b93aacde | 6452 | exec_sentinel_error_handler (Lisp_Object error_val) |
3b9a3dfa | 6453 | { |
b93aacde | 6454 | cmd_error_internal (error_val, "error in process sentinel: "); |
3b9a3dfa RS |
6455 | Vinhibit_quit = Qt; |
6456 | update_echo_area (); | |
833ba342 | 6457 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6458 | return Qt; |
3b9a3dfa RS |
6459 | } |
6460 | ||
d0d6b7c5 | 6461 | static void |
d3da34e0 | 6462 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6463 | { |
aba7731a | 6464 | Lisp_Object sentinel, odeactivate; |
1882aa38 | 6465 | struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 6466 | ptrdiff_t count = SPECPDL_INDEX (); |
1882aa38 | 6467 | bool outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6468 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6469 | |
84af9896 RS |
6470 | if (inhibit_sentinels) |
6471 | return; | |
6472 | ||
dfc21838 RS |
6473 | /* No need to gcpro these, because all we do with them later |
6474 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6475 | odeactivate = Vdeactivate_mark; |
aba7731a PE |
6476 | #if 0 |
6477 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 6478 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6479 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 6480 | #endif |
dfc21838 | 6481 | |
97e53006 SM |
6482 | /* There's no good reason to let sentinels change the current |
6483 | buffer, and many callers of accept-process-output, sit-for, and | |
6484 | friends don't expect current-buffer to be changed from under them. */ | |
66322887 | 6485 | record_unwind_current_buffer (); |
97e53006 | 6486 | |
4d2b044c | 6487 | sentinel = p->sentinel; |
d0d6b7c5 JB |
6488 | if (NILP (sentinel)) |
6489 | return; | |
6490 | ||
6491 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6492 | assure that it gets restored no matter how the sentinel exits. */ | |
6a09a33b | 6493 | pset_sentinel (p, Qnil); |
d0d6b7c5 JB |
6494 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); |
6495 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6496 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6497 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6498 | |
4da2f5be RS |
6499 | /* In case we get recursively called, |
6500 | and we already saved the match data nonrecursively, | |
6501 | save the same match data in safely recursive fashion. */ | |
6502 | if (outer_running_asynch_code) | |
6503 | { | |
6504 | Lisp_Object tem; | |
89f2614d KS |
6505 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6506 | restore_search_regs (); | |
6507 | record_unwind_save_match_data (); | |
6508 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6509 | } |
6510 | ||
6511 | /* For speed, if a search happens within this code, | |
6512 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6513 | running_asynch_code = 1; |
4da2f5be | 6514 | |
3b9a3dfa RS |
6515 | internal_condition_case_1 (read_process_output_call, |
6516 | Fcons (sentinel, | |
6517 | Fcons (proc, Fcons (reason, Qnil))), | |
6518 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6519 | exec_sentinel_error_handler); | |
4da2f5be RS |
6520 | |
6521 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6522 | restore_search_regs (); |
4da2f5be | 6523 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6524 | |
6525 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6526 | |
6527 | /* Restore waiting_for_user_input_p as it was | |
6528 | when we were called, in case the filter clobbered it. */ | |
6529 | waiting_for_user_input_p = waiting; | |
6530 | ||
7973cfa8 | 6531 | #if 0 |
dfc21838 RS |
6532 | if (! EQ (Fcurrent_buffer (), obuffer) |
6533 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6534 | #endif |
927e08be RS |
6535 | /* But do it only if the caller is actually going to read events. |
6536 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6537 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6538 | if (waiting_for_user_input_p == -1) |
6539 | record_asynch_buffer_change (); | |
8fb3cf64 | 6540 | |
2ea6d561 | 6541 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6542 | } |
6543 | ||
6544 | /* Report all recent events of a change in process status | |
6545 | (either run the sentinel or output a message). | |
b50fe468 RS |
6546 | This is usually done while Emacs is waiting for keyboard input |
6547 | but can be done at other times. */ | |
d0d6b7c5 | 6548 | |
ff6daed3 | 6549 | static void |
d3da34e0 | 6550 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6551 | { |
6552 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6553 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6554 | struct gcpro gcpro1, gcpro2; |
6555 | ||
2e4149a8 KH |
6556 | tail = Qnil; |
6557 | msg = Qnil; | |
d0d6b7c5 JB |
6558 | /* We need to gcpro tail; if read_process_output calls a filter |
6559 | which deletes a process and removes the cons to which tail points | |
6560 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6561 | reference. */ | |
6562 | GCPRO2 (tail, msg); | |
6563 | ||
30623085 RS |
6564 | /* Set this now, so that if new processes are created by sentinels |
6565 | that we run, we get called again to handle their status changes. */ | |
6566 | update_tick = process_tick; | |
6567 | ||
99784d63 | 6568 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6569 | { |
30623085 RS |
6570 | Lisp_Object symbol; |
6571 | register struct Lisp_Process *p; | |
6572 | ||
99784d63 | 6573 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6574 | p = XPROCESS (proc); |
6575 | ||
60f0fb11 | 6576 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6577 | { |
60f0fb11 | 6578 | p->update_tick = p->tick; |
d0d6b7c5 | 6579 | |
30623085 | 6580 | /* If process is still active, read any output that remains. */ |
4d2b044c DA |
6581 | while (! EQ (p->filter, Qt) |
6582 | && ! EQ (p->status, Qconnect) | |
6583 | && ! EQ (p->status, Qlisten) | |
d888760c | 6584 | /* Network or serial process not stopped: */ |
4d2b044c | 6585 | && ! EQ (p->command, Qt) |
60f0fb11 | 6586 | && p->infd >= 0 |
ff6daed3 | 6587 | && p != deleting_process |
60f0fb11 | 6588 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6589 | |
4d2b044c | 6590 | buffer = p->buffer; |
d0d6b7c5 | 6591 | |
30623085 | 6592 | /* Get the text to use for the message. */ |
6bfd98e7 | 6593 | if (p->raw_status_new) |
30623085 | 6594 | update_status (p); |
116c423c | 6595 | msg = status_message (p); |
d0d6b7c5 | 6596 | |
30623085 | 6597 | /* If process is terminated, deactivate it or delete it. */ |
4d2b044c DA |
6598 | symbol = p->status; |
6599 | if (CONSP (p->status)) | |
6600 | symbol = XCAR (p->status); | |
d0d6b7c5 | 6601 | |
30623085 RS |
6602 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6603 | || EQ (symbol, Qclosed)) | |
6604 | { | |
6605 | if (delete_exited_processes) | |
6606 | remove_process (proc); | |
6607 | else | |
6608 | deactivate_process (proc); | |
6609 | } | |
d0d6b7c5 | 6610 | |
0ad61fe7 RS |
6611 | /* The actions above may have further incremented p->tick. |
6612 | So set p->update_tick again | |
6613 | so that an error in the sentinel will not cause | |
6614 | this code to be run again. */ | |
60f0fb11 | 6615 | p->update_tick = p->tick; |
30623085 | 6616 | /* Now output the message suitably. */ |
4d2b044c | 6617 | if (!NILP (p->sentinel)) |
30623085 RS |
6618 | exec_sentinel (proc, msg); |
6619 | /* Don't bother with a message in the buffer | |
6620 | when a process becomes runnable. */ | |
6621 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6622 | { | |
01f5787b | 6623 | Lisp_Object tem; |
30623085 | 6624 | struct buffer *old = current_buffer; |
d311d28c PE |
6625 | ptrdiff_t opoint, opoint_byte; |
6626 | ptrdiff_t before, before_byte; | |
2e4149a8 | 6627 | |
30623085 RS |
6628 | /* Avoid error if buffer is deleted |
6629 | (probably that's why the process is dead, too) */ | |
e578f381 | 6630 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
30623085 RS |
6631 | continue; |
6632 | Fset_buffer (buffer); | |
12ca5cdf | 6633 | |
6ec8bbd2 | 6634 | opoint = PT; |
d8a2934e | 6635 | opoint_byte = PT_BYTE; |
30623085 RS |
6636 | /* Insert new output into buffer |
6637 | at the current end-of-output marker, | |
6638 | thus preserving logical ordering of input and output. */ | |
4d2b044c DA |
6639 | if (XMARKER (p->mark)->buffer) |
6640 | Fgoto_char (p->mark); | |
30623085 | 6641 | else |
d8a2934e | 6642 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6643 | |
6644 | before = PT; | |
d8a2934e | 6645 | before_byte = PT_BYTE; |
30623085 | 6646 | |
4b4deea2 | 6647 | tem = BVAR (current_buffer, read_only); |
39eb03f1 | 6648 | bset_read_only (current_buffer, Qnil); |
30623085 | 6649 | insert_string ("\nProcess "); |
21238f11 | 6650 | { /* FIXME: temporary kludge */ |
4d2b044c | 6651 | Lisp_Object tem2 = p->name; Finsert (1, &tem2); } |
30623085 RS |
6652 | insert_string (" "); |
6653 | Finsert (1, &msg); | |
39eb03f1 | 6654 | bset_read_only (current_buffer, tem); |
4d2b044c | 6655 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6656 | |
12ca5cdf | 6657 | if (opoint >= before) |
d8a2934e RS |
6658 | SET_PT_BOTH (opoint + (PT - before), |
6659 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6660 | else |
d8a2934e | 6661 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6662 | |
30623085 | 6663 | set_buffer_internal (old); |
d0d6b7c5 | 6664 | } |
30623085 RS |
6665 | } |
6666 | } /* end for */ | |
d0d6b7c5 JB |
6667 | |
6668 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6669 | UNGCPRO; |
6670 | } | |
0fa1789e KH |
6671 | |
6672 | \f | |
6673 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6674 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6675 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6676 | DECODING will be used to decode subprocess output and ENCODING to | |
6677 | encode subprocess input. */) | |
5842a27b | 6678 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6679 | { |
6680 | register struct Lisp_Process *p; | |
6681 | ||
f3d9532b JB |
6682 | CHECK_PROCESS (process); |
6683 | p = XPROCESS (process); | |
60f0fb11 | 6684 | if (p->infd < 0) |
4d2b044c | 6685 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6686 | if (p->outfd < 0) |
4d2b044c | 6687 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6688 | Fcheck_coding_system (decoding); |
6689 | Fcheck_coding_system (encoding); | |
76d812bb | 6690 | encoding = coding_inherit_eol_type (encoding, Qnil); |
6a09a33b PE |
6691 | pset_decode_coding_system (p, decoding); |
6692 | pset_encode_coding_system (p, encoding); | |
f3d9532b | 6693 | setup_process_coding_systems (process); |
0fa1789e KH |
6694 | |
6695 | return Qnil; | |
6696 | } | |
6697 | ||
6698 | DEFUN ("process-coding-system", | |
6699 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6700 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6701 | (register Lisp_Object process) |
0fa1789e | 6702 | { |
f3d9532b | 6703 | CHECK_PROCESS (process); |
4d2b044c DA |
6704 | return Fcons (XPROCESS (process)->decode_coding_system, |
6705 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6706 | } |
03f04413 KH |
6707 | |
6708 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6709 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6710 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6711 | If FLAG is non-nil, the filter is given multibyte strings. | |
6712 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6713 | all character code conversion except for end-of-line conversion is |
6714 | suppressed. */) | |
5842a27b | 6715 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6716 | { |
6717 | register struct Lisp_Process *p; | |
6718 | ||
f3d9532b JB |
6719 | CHECK_PROCESS (process); |
6720 | p = XPROCESS (process); | |
5431bd6a | 6721 | if (NILP (flag)) |
6a09a33b PE |
6722 | pset_decode_coding_system |
6723 | (p, raw_text_coding_system (p->decode_coding_system)); | |
f3d9532b | 6724 | setup_process_coding_systems (process); |
03f04413 KH |
6725 | |
6726 | return Qnil; | |
6727 | } | |
6728 | ||
6729 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6730 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6731 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6732 | (Lisp_Object process) |
03f04413 KH |
6733 | { |
6734 | register struct Lisp_Process *p; | |
5431bd6a | 6735 | struct coding_system *coding; |
03f04413 | 6736 | |
f3d9532b JB |
6737 | CHECK_PROCESS (process); |
6738 | p = XPROCESS (process); | |
5431bd6a SM |
6739 | coding = proc_decode_coding_system[p->infd]; |
6740 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6741 | } |
6742 | ||
6743 | ||
d0d6b7c5 | 6744 | \f |
cb768704 | 6745 | |
4475bec4 PE |
6746 | # ifdef HAVE_GPM |
6747 | ||
994d9841 | 6748 | void |
d3da34e0 | 6749 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6750 | { |
3fad2ad2 | 6751 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6752 | } |
6753 | ||
994d9841 | 6754 | void |
d3da34e0 | 6755 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6756 | { |
3fad2ad2 | 6757 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6758 | } |
6759 | ||
4475bec4 PE |
6760 | # endif |
6761 | ||
4a4bbad2 | 6762 | # ifdef USABLE_SIGIO |
006c5daa | 6763 | |
a69281ff RS |
6764 | /* Return nonzero if *MASK has a bit set |
6765 | that corresponds to one of the keyboard input descriptors. */ | |
6766 | ||
ff6daed3 | 6767 | static int |
d3da34e0 | 6768 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6769 | { |
6770 | int fd; | |
6771 | ||
3fad2ad2 | 6772 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6773 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6774 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6775 | return 1; | |
6776 | ||
6777 | return 0; | |
6778 | } | |
006c5daa | 6779 | # endif |
934e2a68 | 6780 | |
f388c88a | 6781 | #else /* not subprocesses */ |
934e2a68 | 6782 | |
f388c88a EZ |
6783 | /* Defined on msdos.c. */ |
6784 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
0d23c240 | 6785 | EMACS_TIME *, void *); |
934e2a68 | 6786 | |
f388c88a EZ |
6787 | /* Implementation of wait_reading_process_output, assuming that there |
6788 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6789 | |
f388c88a | 6790 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6791 | |
d188e26b | 6792 | TIME_LIMIT is: |
d35af63c PE |
6793 | timeout in seconds |
6794 | If negative, gobble data immediately available but don't wait for any. | |
6795 | ||
d188e26b | 6796 | NSECS is: |
d35af63c PE |
6797 | an additional duration to wait, measured in nanoseconds |
6798 | If TIME_LIMIT is zero, then: | |
d188e26b PE |
6799 | If NSECS == 0, there is no limit. |
6800 | If NSECS > 0, the timeout consists of NSECS only. | |
d35af63c | 6801 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
934e2a68 | 6802 | |
a0bee46f | 6803 | READ_KBD is: |
f388c88a EZ |
6804 | 0 to ignore keyboard input, or |
6805 | 1 to return when input is available, or | |
6806 | -1 means caller will actually read the input, so don't throw to | |
6807 | the quit handler. | |
934e2a68 | 6808 | |
f388c88a EZ |
6809 | see full version for other parameters. We know that wait_proc will |
6810 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6811 | |
9fa1de30 | 6812 | DO_DISPLAY means redisplay should be done to show subprocess |
f388c88a | 6813 | output that arrives. |
934e2a68 | 6814 | |
f388c88a EZ |
6815 | Return true if we received input from any process. */ |
6816 | ||
6817 | int | |
d35af63c | 6818 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
9fa1de30 | 6819 | bool do_display, |
1408902e EZ |
6820 | Lisp_Object wait_for_cell, |
6821 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6822 | { |
f388c88a EZ |
6823 | register int nfds; |
6824 | EMACS_TIME end_time, timeout; | |
d0d6b7c5 | 6825 | |
d35af63c PE |
6826 | if (time_limit < 0) |
6827 | { | |
6828 | time_limit = 0; | |
6829 | nsecs = -1; | |
6830 | } | |
6831 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
6832 | time_limit = TYPE_MAXIMUM (time_t); | |
6833 | ||
f388c88a | 6834 | /* What does time_limit really mean? */ |
216ee680 | 6835 | if (time_limit || 0 < nsecs) |
f388c88a | 6836 | { |
e9a9ae03 PE |
6837 | timeout = make_emacs_time (time_limit, nsecs); |
6838 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
f388c88a | 6839 | } |
84af9896 | 6840 | |
f388c88a EZ |
6841 | /* Turn off periodic alarms (in case they are in use) |
6842 | and then turn off any other atimers, | |
6843 | because the select emulator uses alarms. */ | |
6844 | stop_polling (); | |
6845 | turn_on_atimers (0); | |
d0d6b7c5 | 6846 | |
f388c88a EZ |
6847 | while (1) |
6848 | { | |
6849 | int timeout_reduced_for_timers = 0; | |
a0bee46f PE |
6850 | SELECT_TYPE waitchannels; |
6851 | int xerrno; | |
dd2281ae | 6852 | |
f388c88a EZ |
6853 | /* If calling from keyboard input, do not quit |
6854 | since we want to return C-g as an input character. | |
6855 | Otherwise, do pending quit if requested. */ | |
6856 | if (read_kbd >= 0) | |
6857 | QUIT; | |
bad49fc7 | 6858 | |
f388c88a EZ |
6859 | /* Exit now if the cell we're waiting for became non-nil. */ |
6860 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6861 | break; | |
0a65b032 | 6862 | |
bae8d137 RS |
6863 | /* Compute time from now till when time limit is up */ |
6864 | /* Exit if already run out */ | |
d35af63c | 6865 | if (nsecs < 0) |
52fd88d3 | 6866 | { |
216ee680 | 6867 | /* A negative timeout means |
52fd88d3 EZ |
6868 | gobble output available now |
6869 | but don't wait at all. */ | |
6870 | ||
e9a9ae03 | 6871 | timeout = make_emacs_time (0, 0); |
52fd88d3 | 6872 | } |
216ee680 | 6873 | else if (time_limit || 0 < nsecs) |
6720a7fb | 6874 | { |
e9a9ae03 PE |
6875 | EMACS_TIME now = current_emacs_time (); |
6876 | if (EMACS_TIME_LE (end_time, now)) | |
6720a7fb | 6877 | break; |
e9a9ae03 | 6878 | timeout = sub_emacs_time (end_time, now); |
6720a7fb | 6879 | } |
52fd88d3 EZ |
6880 | else |
6881 | { | |
e9a9ae03 | 6882 | timeout = make_emacs_time (100000, 0); |
52fd88d3 | 6883 | } |
6720a7fb | 6884 | |
bae8d137 RS |
6885 | /* If our caller will not immediately handle keyboard events, |
6886 | run timer events directly. | |
6887 | (Callers that will immediately read keyboard events | |
6888 | call timer_delay on their own.) */ | |
f3fbd155 | 6889 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6890 | { |
6891 | EMACS_TIME timer_delay; | |
0a65b032 | 6892 | |
9baacf76 | 6893 | do |
0a65b032 | 6894 | { |
9fa1de30 | 6895 | unsigned old_timers_run = timers_run; |
f868cd8a | 6896 | timer_delay = timer_check (); |
9baacf76 GM |
6897 | if (timers_run != old_timers_run && do_display) |
6898 | /* We must retry, since a timer may have requeued itself | |
6899 | and that could alter the time delay. */ | |
3007ebfb | 6900 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6901 | else |
6902 | break; | |
0a65b032 | 6903 | } |
9baacf76 | 6904 | while (!detect_input_pending ()); |
0a65b032 | 6905 | |
52fd88d3 | 6906 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6907 | if (read_kbd != 0 |
52fd88d3 EZ |
6908 | && requeued_events_pending_p ()) |
6909 | break; | |
6910 | ||
d35af63c | 6911 | if (EMACS_TIME_VALID_P (timer_delay) && 0 <= nsecs) |
bae8d137 | 6912 | { |
d35af63c | 6913 | if (EMACS_TIME_LT (timer_delay, timeout)) |
bae8d137 | 6914 | { |
f694e5d2 | 6915 | timeout = timer_delay; |
bae8d137 RS |
6916 | timeout_reduced_for_timers = 1; |
6917 | } | |
6918 | } | |
6919 | } | |
6920 | ||
6720a7fb JB |
6921 | /* Cause C-g and alarm signals to take immediate action, |
6922 | and cause input available signals to zero out timeout. */ | |
b89a415a | 6923 | if (read_kbd < 0) |
6720a7fb JB |
6924 | set_waiting_for_input (&timeout); |
6925 | ||
ff11dfa1 | 6926 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6927 | reprocess its display stuff. */ |
5164ee8e | 6928 | if (frame_garbaged && do_display) |
0a65b032 RS |
6929 | { |
6930 | clear_waiting_for_input (); | |
3007ebfb | 6931 | redisplay_preserve_echo_area (15); |
b89a415a | 6932 | if (read_kbd < 0) |
0a65b032 RS |
6933 | set_waiting_for_input (&timeout); |
6934 | } | |
6720a7fb | 6935 | |
a0bee46f PE |
6936 | /* Wait till there is something to do. */ |
6937 | FD_ZERO (&waitchannels); | |
b89a415a | 6938 | if (read_kbd && detect_input_pending ()) |
a0bee46f PE |
6939 | nfds = 0; |
6940 | else | |
1861b214 | 6941 | { |
a0bee46f PE |
6942 | if (read_kbd || !NILP (wait_for_cell)) |
6943 | FD_SET (0, &waitchannels); | |
6944 | nfds = pselect (1, &waitchannels, NULL, NULL, &timeout, NULL); | |
1861b214 | 6945 | } |
f694e5d2 KH |
6946 | |
6947 | xerrno = errno; | |
6720a7fb JB |
6948 | |
6949 | /* Make C-g and alarm signals set flags again */ | |
6950 | clear_waiting_for_input (); | |
6951 | ||
6952 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 6953 | do_pending_window_change (0); |
6720a7fb | 6954 | |
d35af63c | 6955 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
f694e5d2 KH |
6956 | /* We waited the full specified time, so return now. */ |
6957 | break; | |
6958 | ||
6720a7fb JB |
6959 | if (nfds == -1) |
6960 | { | |
6961 | /* If the system call was interrupted, then go around the | |
6962 | loop again. */ | |
f694e5d2 | 6963 | if (xerrno == EINTR) |
8db121c4 | 6964 | FD_ZERO (&waitchannels); |
f694e5d2 | 6965 | else |
68c45bf0 | 6966 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 6967 | } |
6720a7fb | 6968 | |
f694e5d2 KH |
6969 | /* Check for keyboard input */ |
6970 | ||
b89a415a | 6971 | if (read_kbd |
78c1afb6 | 6972 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 6973 | { |
78c1afb6 | 6974 | swallow_events (do_display); |
f694e5d2 | 6975 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 6976 | break; |
78c1afb6 EZ |
6977 | } |
6978 | ||
52fd88d3 | 6979 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6980 | if (read_kbd |
52fd88d3 EZ |
6981 | && requeued_events_pending_p ()) |
6982 | break; | |
6983 | ||
f854a00b RS |
6984 | /* If wait_for_cell. check for keyboard input |
6985 | but don't run any timers. | |
6986 | ??? (It seems wrong to me to check for keyboard | |
6987 | input at all when wait_for_cell, but the code | |
6988 | has been this way since July 1994. | |
6989 | Try changing this after version 19.31.) */ | |
f3fbd155 | 6990 | if (! NILP (wait_for_cell) |
f854a00b RS |
6991 | && detect_input_pending ()) |
6992 | { | |
6993 | swallow_events (do_display); | |
6994 | if (detect_input_pending ()) | |
6995 | break; | |
6996 | } | |
6997 | ||
0a65b032 | 6998 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6999 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7000 | break; |
6720a7fb JB |
7001 | } |
7002 | ||
a87b802f JB |
7003 | start_polling (); |
7004 | ||
6720a7fb JB |
7005 | return 0; |
7006 | } | |
7007 | ||
f388c88a EZ |
7008 | #endif /* not subprocesses */ |
7009 | ||
7010 | /* The following functions are needed even if async subprocesses are | |
7011 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 7012 | |
01faa934 DN |
7013 | /* Add DESC to the set of keyboard input descriptors. */ |
7014 | ||
7015 | void | |
7016 | add_keyboard_wait_descriptor (int desc) | |
7017 | { | |
bf05eed6 | 7018 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
7019 | FD_SET (desc, &input_wait_mask); |
7020 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
7021 | if (desc > max_input_desc) |
7022 | max_input_desc = desc; | |
bf05eed6 | 7023 | #endif |
01faa934 DN |
7024 | } |
7025 | ||
7026 | /* From now on, do not expect DESC to give keyboard input. */ | |
7027 | ||
7028 | void | |
7029 | delete_keyboard_wait_descriptor (int desc) | |
7030 | { | |
bf05eed6 | 7031 | #ifdef subprocesses |
01faa934 | 7032 | int fd; |
3fad2ad2 | 7033 | int lim = max_input_desc; |
01faa934 DN |
7034 | |
7035 | FD_CLR (desc, &input_wait_mask); | |
7036 | FD_CLR (desc, &non_process_wait_mask); | |
7037 | ||
3fad2ad2 | 7038 | if (desc == max_input_desc) |
01faa934 | 7039 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
7040 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
7041 | max_input_desc = fd; | |
bf05eed6 | 7042 | #endif |
01faa934 DN |
7043 | } |
7044 | ||
fc549af9 EZ |
7045 | /* Setup coding systems of PROCESS. */ |
7046 | ||
7047 | void | |
7048 | setup_process_coding_systems (Lisp_Object process) | |
7049 | { | |
7050 | #ifdef subprocesses | |
7051 | struct Lisp_Process *p = XPROCESS (process); | |
7052 | int inch = p->infd; | |
7053 | int outch = p->outfd; | |
7054 | Lisp_Object coding_system; | |
7055 | ||
7056 | if (inch < 0 || outch < 0) | |
7057 | return; | |
7058 | ||
7059 | if (!proc_decode_coding_system[inch]) | |
38182d90 | 7060 | proc_decode_coding_system[inch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c DA |
7061 | coding_system = p->decode_coding_system; |
7062 | if (! NILP (p->filter)) | |
fc549af9 | 7063 | ; |
4d2b044c | 7064 | else if (BUFFERP (p->buffer)) |
fc549af9 | 7065 | { |
4d2b044c | 7066 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
7067 | coding_system = raw_text_coding_system (coding_system); |
7068 | } | |
7069 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7070 | ||
7071 | if (!proc_encode_coding_system[outch]) | |
38182d90 | 7072 | proc_encode_coding_system[outch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c | 7073 | setup_coding_system (p->encode_coding_system, |
fc549af9 EZ |
7074 | proc_encode_coding_system[outch]); |
7075 | #endif | |
7076 | } | |
7077 | ||
7078 | /* Close all descriptors currently in use for communication | |
7079 | with subprocess. This is used in a newly-forked subprocess | |
7080 | to get rid of irrelevant descriptors. */ | |
7081 | ||
7082 | void | |
7083 | close_process_descs (void) | |
7084 | { | |
7085 | #ifndef DOS_NT | |
7086 | int i; | |
7087 | for (i = 0; i < MAXDESC; i++) | |
7088 | { | |
7089 | Lisp_Object process; | |
7090 | process = chan_process[i]; | |
7091 | if (!NILP (process)) | |
7092 | { | |
7093 | int in = XPROCESS (process)->infd; | |
7094 | int out = XPROCESS (process)->outfd; | |
7095 | if (in >= 0) | |
7096 | emacs_close (in); | |
7097 | if (out >= 0 && in != out) | |
7098 | emacs_close (out); | |
7099 | } | |
7100 | } | |
7101 | #endif | |
7102 | } | |
7103 | ||
6720a7fb | 7104 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7105 | doc: /* Return the (or a) process associated with BUFFER. |
7106 | BUFFER may be a buffer or the name of one. */) | |
7107 | (register Lisp_Object buffer) | |
6720a7fb | 7108 | { |
f388c88a EZ |
7109 | #ifdef subprocesses |
7110 | register Lisp_Object buf, tail, proc; | |
7111 | ||
7112 | if (NILP (buffer)) return Qnil; | |
7113 | buf = Fget_buffer (buffer); | |
7114 | if (NILP (buf)) return Qnil; | |
7115 | ||
7116 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7117 | { | |
7118 | proc = Fcdr (XCAR (tail)); | |
4d2b044c | 7119 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
f388c88a EZ |
7120 | return proc; |
7121 | } | |
7122 | #endif /* subprocesses */ | |
6720a7fb JB |
7123 | return Qnil; |
7124 | } | |
7125 | ||
52a1b894 | 7126 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7127 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7128 | 1, 1, 0, | |
f388c88a EZ |
7129 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7130 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7131 | associated with PROCESS will inherit the coding system used to decode | |
7132 | the process output. */) | |
5842a27b | 7133 | (register Lisp_Object process) |
52a1b894 | 7134 | { |
f388c88a EZ |
7135 | #ifdef subprocesses |
7136 | CHECK_PROCESS (process); | |
7137 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7138 | #else | |
52a1b894 EZ |
7139 | /* Ignore the argument and return the value of |
7140 | inherit-process-coding-system. */ | |
7141 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7142 | #endif |
52a1b894 EZ |
7143 | } |
7144 | ||
6720a7fb | 7145 | /* Kill all processes associated with `buffer'. |
f388c88a | 7146 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7147 | |
d9bb0c32 | 7148 | void |
f388c88a | 7149 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7150 | { |
f388c88a EZ |
7151 | #ifdef subprocesses |
7152 | Lisp_Object tail, proc; | |
7153 | ||
7154 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7155 | { | |
7156 | proc = XCDR (XCAR (tail)); | |
7157 | if (PROCESSP (proc) | |
4d2b044c | 7158 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
f388c88a EZ |
7159 | { |
7160 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7161 | Fdelete_process (proc); | |
7162 | else if (XPROCESS (proc)->infd >= 0) | |
7163 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7164 | } | |
7165 | } | |
7166 | #else /* subprocesses */ | |
7167 | /* Since we have no subprocesses, this does nothing. */ | |
7168 | #endif /* subprocesses */ | |
6720a7fb JB |
7169 | } |
7170 | ||
a7ca3326 | 7171 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, |
16a97296 | 7172 | Swaiting_for_user_input_p, 0, 0, 0, |
77defa9a EZ |
7173 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
7174 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7175 | (void) | |
7176 | { | |
7177 | #ifdef subprocesses | |
7178 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7179 | #else | |
7180 | return Qnil; | |
7181 | #endif | |
7182 | } | |
7183 | ||
d568829b EZ |
7184 | /* Stop reading input from keyboard sources. */ |
7185 | ||
7186 | void | |
7187 | hold_keyboard_input (void) | |
7188 | { | |
7189 | kbd_is_on_hold = 1; | |
7190 | } | |
7191 | ||
7192 | /* Resume reading input from keyboard sources. */ | |
7193 | ||
7194 | void | |
7195 | unhold_keyboard_input (void) | |
7196 | { | |
7197 | kbd_is_on_hold = 0; | |
7198 | } | |
7199 | ||
7200 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7201 | ||
7202 | int | |
7203 | kbd_on_hold_p (void) | |
7204 | { | |
7205 | return kbd_is_on_hold; | |
7206 | } | |
7207 | ||
f388c88a EZ |
7208 | \f |
7209 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7210 | ||
934e2a68 EZ |
7211 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7212 | 0, 0, 0, | |
7213 | doc: /* Return a list of numerical process IDs of all running processes. | |
7214 | If this functionality is unsupported, return nil. | |
7215 | ||
f388c88a EZ |
7216 | See `process-attributes' for getting attributes of a process given its ID. */) |
7217 | (void) | |
7218 | { | |
7219 | return list_system_processes (); | |
7220 | } | |
7221 | ||
7222 | DEFUN ("process-attributes", Fprocess_attributes, | |
7223 | Sprocess_attributes, 1, 1, 0, | |
7224 | doc: /* Return attributes of the process given by its PID, a number. | |
7225 | ||
7226 | Value is an alist where each element is a cons cell of the form | |
7227 | ||
7228 | \(KEY . VALUE) | |
7229 | ||
7230 | If this functionality is unsupported, the value is nil. | |
7231 | ||
7232 | See `list-system-processes' for getting a list of all process IDs. | |
7233 | ||
7234 | The KEYs of the attributes that this function may return are listed | |
7235 | below, together with the type of the associated VALUE (in parentheses). | |
7236 | Not all platforms support all of these attributes; unsupported | |
7237 | attributes will not appear in the returned alist. | |
7238 | Unless explicitly indicated otherwise, numbers can have either | |
7239 | integer or floating point values. | |
7240 | ||
7241 | euid -- Effective user User ID of the process (number) | |
7242 | user -- User name corresponding to euid (string) | |
7243 | egid -- Effective user Group ID of the process (number) | |
7244 | group -- Group name corresponding to egid (string) | |
7245 | comm -- Command name (executable name only) (string) | |
7246 | state -- Process state code, such as "S", "R", or "T" (string) | |
7247 | ppid -- Parent process ID (number) | |
7248 | pgrp -- Process group ID (number) | |
7249 | sess -- Session ID, i.e. process ID of session leader (number) | |
7250 | ttname -- Controlling tty name (string) | |
7251 | tpgid -- ID of foreground process group on the process's tty (number) | |
7252 | minflt -- number of minor page faults (number) | |
7253 | majflt -- number of major page faults (number) | |
7254 | cminflt -- cumulative number of minor page faults (number) | |
7255 | cmajflt -- cumulative number of major page faults (number) | |
d35af63c PE |
7256 | utime -- user time used by the process, in (current-time) format, |
7257 | which is a list of integers (HIGH LOW USEC PSEC) | |
7258 | stime -- system time used by the process (current-time) | |
7259 | time -- sum of utime and stime (current-time) | |
7260 | cutime -- user time used by the process and its children (current-time) | |
7261 | cstime -- system time used by the process and its children (current-time) | |
7262 | ctime -- sum of cutime and cstime (current-time) | |
f388c88a EZ |
7263 | pri -- priority of the process (number) |
7264 | nice -- nice value of the process (number) | |
7265 | thcount -- process thread count (number) | |
d35af63c | 7266 | start -- time the process started (current-time) |
f388c88a EZ |
7267 | vsize -- virtual memory size of the process in KB's (number) |
7268 | rss -- resident set size of the process in KB's (number) | |
d35af63c | 7269 | etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format |
f388c88a EZ |
7270 | pcpu -- percents of CPU time used by the process (floating-point number) |
7271 | pmem -- percents of total physical memory used by process's resident set | |
7272 | (floating-point number) | |
7273 | args -- command line which invoked the process (string). */) | |
7274 | ( Lisp_Object pid) | |
7275 | { | |
7276 | return system_process_attributes (pid); | |
7277 | } | |
7278 | ||
7279 | \f | |
b82da769 GM |
7280 | /* This is not called "init_process" because that is the name of a |
7281 | Mach system call, so it would cause problems on Darwin systems. */ | |
f388c88a | 7282 | void |
b82da769 | 7283 | init_process_emacs (void) |
f388c88a EZ |
7284 | { |
7285 | #ifdef subprocesses | |
7286 | register int i; | |
7287 | ||
7288 | inhibit_sentinels = 0; | |
7289 | ||
7290 | #ifdef SIGCHLD | |
7291 | #ifndef CANNOT_DUMP | |
7292 | if (! noninteractive || initialized) | |
7293 | #endif | |
2fe28299 PE |
7294 | { |
7295 | struct sigaction action; | |
7296 | emacs_sigaction_init (&action, deliver_child_signal); | |
7297 | sigaction (SIGCHLD, &action, 0); | |
7298 | } | |
f388c88a EZ |
7299 | #endif |
7300 | ||
7301 | FD_ZERO (&input_wait_mask); | |
7302 | FD_ZERO (&non_keyboard_wait_mask); | |
7303 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7304 | FD_ZERO (&write_mask); |
f388c88a | 7305 | max_process_desc = 0; |
3fad2ad2 | 7306 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7307 | |
7308 | #ifdef NON_BLOCKING_CONNECT | |
7309 | FD_ZERO (&connect_wait_mask); | |
7310 | num_pending_connects = 0; | |
7311 | #endif | |
7312 | ||
7313 | #ifdef ADAPTIVE_READ_BUFFERING | |
7314 | process_output_delay_count = 0; | |
7315 | process_output_skip = 0; | |
7316 | #endif | |
7317 | ||
7318 | /* Don't do this, it caused infinite select loops. The display | |
7319 | method should call add_keyboard_wait_descriptor on stdin if it | |
7320 | needs that. */ | |
7321 | #if 0 | |
7322 | FD_SET (0, &input_wait_mask); | |
7323 | #endif | |
7324 | ||
7325 | Vprocess_alist = Qnil; | |
7326 | #ifdef SIGCHLD | |
7327 | deleted_pid_list = Qnil; | |
7328 | #endif | |
7329 | for (i = 0; i < MAXDESC; i++) | |
7330 | { | |
7331 | chan_process[i] = Qnil; | |
7332 | proc_buffered_char[i] = -1; | |
7333 | } | |
7334 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7335 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7336 | #ifdef DATAGRAM_SOCKETS | |
7337 | memset (datagram_address, 0, sizeof datagram_address); | |
7338 | #endif | |
7339 | ||
f388c88a EZ |
7340 | { |
7341 | Lisp_Object subfeatures = Qnil; | |
7342 | const struct socket_options *sopt; | |
7343 | ||
7344 | #define ADD_SUBFEATURE(key, val) \ | |
7345 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7346 | ||
7347 | #ifdef NON_BLOCKING_CONNECT | |
7348 | ADD_SUBFEATURE (QCnowait, Qt); | |
7349 | #endif | |
7350 | #ifdef DATAGRAM_SOCKETS | |
7351 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7352 | #endif | |
7353 | #ifdef HAVE_SEQPACKET | |
7354 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7355 | #endif | |
7356 | #ifdef HAVE_LOCAL_SOCKETS | |
7357 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7358 | #endif | |
7359 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7360 | #ifdef AF_INET6 | |
7361 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7362 | #endif | |
7363 | #ifdef HAVE_GETSOCKNAME | |
7364 | ADD_SUBFEATURE (QCservice, Qt); | |
7365 | #endif | |
5e617bc2 | 7366 | #if defined (O_NONBLOCK) || defined (O_NDELAY) |
f388c88a EZ |
7367 | ADD_SUBFEATURE (QCserver, Qt); |
7368 | #endif | |
7369 | ||
7370 | for (sopt = socket_options; sopt->name; sopt++) | |
7371 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7372 | ||
7373 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7374 | } | |
f388c88a EZ |
7375 | |
7376 | #if defined (DARWIN_OS) | |
7377 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7378 | processes. As such, we only change the default value. */ | |
7379 | if (initialized) | |
7380 | { | |
f44bd759 PE |
7381 | char const *release = (STRINGP (Voperating_system_release) |
7382 | ? SSDATA (Voperating_system_release) | |
7383 | : 0); | |
6de0e799 | 7384 | if (!release || !release[0] || (release[0] < '7' && release[1] == '.')) { |
f388c88a EZ |
7385 | Vprocess_connection_type = Qnil; |
7386 | } | |
7387 | } | |
7388 | #endif | |
7389 | #endif /* subprocesses */ | |
7390 | kbd_is_on_hold = 0; | |
7391 | } | |
7392 | ||
7393 | void | |
7394 | syms_of_process (void) | |
7395 | { | |
7396 | #ifdef subprocesses | |
7397 | ||
cd3520a4 JB |
7398 | DEFSYM (Qprocessp, "processp"); |
7399 | DEFSYM (Qrun, "run"); | |
7400 | DEFSYM (Qstop, "stop"); | |
7401 | DEFSYM (Qsignal, "signal"); | |
f388c88a EZ |
7402 | |
7403 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7404 | here again. | |
934e2a68 | 7405 | |
f388c88a EZ |
7406 | Qexit = intern_c_string ("exit"); |
7407 | staticpro (&Qexit); */ | |
934e2a68 | 7408 | |
cd3520a4 JB |
7409 | DEFSYM (Qopen, "open"); |
7410 | DEFSYM (Qclosed, "closed"); | |
7411 | DEFSYM (Qconnect, "connect"); | |
7412 | DEFSYM (Qfailed, "failed"); | |
7413 | DEFSYM (Qlisten, "listen"); | |
7414 | DEFSYM (Qlocal, "local"); | |
7415 | DEFSYM (Qipv4, "ipv4"); | |
f388c88a | 7416 | #ifdef AF_INET6 |
cd3520a4 JB |
7417 | DEFSYM (Qipv6, "ipv6"); |
7418 | #endif | |
7419 | DEFSYM (Qdatagram, "datagram"); | |
7420 | DEFSYM (Qseqpacket, "seqpacket"); | |
7421 | ||
7422 | DEFSYM (QCport, ":port"); | |
7423 | DEFSYM (QCspeed, ":speed"); | |
7424 | DEFSYM (QCprocess, ":process"); | |
7425 | ||
7426 | DEFSYM (QCbytesize, ":bytesize"); | |
7427 | DEFSYM (QCstopbits, ":stopbits"); | |
7428 | DEFSYM (QCparity, ":parity"); | |
7429 | DEFSYM (Qodd, "odd"); | |
7430 | DEFSYM (Qeven, "even"); | |
7431 | DEFSYM (QCflowcontrol, ":flowcontrol"); | |
7432 | DEFSYM (Qhw, "hw"); | |
7433 | DEFSYM (Qsw, "sw"); | |
7434 | DEFSYM (QCsummary, ":summary"); | |
7435 | ||
7436 | DEFSYM (Qreal, "real"); | |
7437 | DEFSYM (Qnetwork, "network"); | |
7438 | DEFSYM (Qserial, "serial"); | |
7439 | DEFSYM (QCbuffer, ":buffer"); | |
7440 | DEFSYM (QChost, ":host"); | |
7441 | DEFSYM (QCservice, ":service"); | |
7442 | DEFSYM (QClocal, ":local"); | |
7443 | DEFSYM (QCremote, ":remote"); | |
7444 | DEFSYM (QCcoding, ":coding"); | |
7445 | DEFSYM (QCserver, ":server"); | |
7446 | DEFSYM (QCnowait, ":nowait"); | |
7447 | DEFSYM (QCsentinel, ":sentinel"); | |
7448 | DEFSYM (QClog, ":log"); | |
7449 | DEFSYM (QCnoquery, ":noquery"); | |
7450 | DEFSYM (QCstop, ":stop"); | |
7451 | DEFSYM (QCoptions, ":options"); | |
7452 | DEFSYM (QCplist, ":plist"); | |
7453 | ||
7454 | DEFSYM (Qlast_nonmenu_event, "last-nonmenu-event"); | |
934e2a68 | 7455 | |
f388c88a EZ |
7456 | staticpro (&Vprocess_alist); |
7457 | #ifdef SIGCHLD | |
7458 | staticpro (&deleted_pid_list); | |
7459 | #endif | |
934e2a68 | 7460 | |
f388c88a | 7461 | #endif /* subprocesses */ |
6720a7fb | 7462 | |
cd3520a4 JB |
7463 | DEFSYM (QCname, ":name"); |
7464 | DEFSYM (QCtype, ":type"); | |
7465 | ||
7466 | DEFSYM (Qeuid, "euid"); | |
7467 | DEFSYM (Qegid, "egid"); | |
7468 | DEFSYM (Quser, "user"); | |
7469 | DEFSYM (Qgroup, "group"); | |
7470 | DEFSYM (Qcomm, "comm"); | |
7471 | DEFSYM (Qstate, "state"); | |
7472 | DEFSYM (Qppid, "ppid"); | |
7473 | DEFSYM (Qpgrp, "pgrp"); | |
7474 | DEFSYM (Qsess, "sess"); | |
7475 | DEFSYM (Qttname, "ttname"); | |
7476 | DEFSYM (Qtpgid, "tpgid"); | |
7477 | DEFSYM (Qminflt, "minflt"); | |
7478 | DEFSYM (Qmajflt, "majflt"); | |
7479 | DEFSYM (Qcminflt, "cminflt"); | |
7480 | DEFSYM (Qcmajflt, "cmajflt"); | |
7481 | DEFSYM (Qutime, "utime"); | |
7482 | DEFSYM (Qstime, "stime"); | |
7483 | DEFSYM (Qtime, "time"); | |
7484 | DEFSYM (Qcutime, "cutime"); | |
7485 | DEFSYM (Qcstime, "cstime"); | |
7486 | DEFSYM (Qctime, "ctime"); | |
7487 | DEFSYM (Qpri, "pri"); | |
7488 | DEFSYM (Qnice, "nice"); | |
7489 | DEFSYM (Qthcount, "thcount"); | |
7490 | DEFSYM (Qstart, "start"); | |
7491 | DEFSYM (Qvsize, "vsize"); | |
7492 | DEFSYM (Qrss, "rss"); | |
7493 | DEFSYM (Qetime, "etime"); | |
7494 | DEFSYM (Qpcpu, "pcpu"); | |
7495 | DEFSYM (Qpmem, "pmem"); | |
7496 | DEFSYM (Qargs, "args"); | |
9057ff80 | 7497 | |
29208e82 | 7498 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
fb7ada5f | 7499 | doc: /* Non-nil means delete processes immediately when they exit. |
f388c88a EZ |
7500 | A value of nil means don't delete them until `list-processes' is run. */); |
7501 | ||
7502 | delete_exited_processes = 1; | |
7503 | ||
462aa963 | 7504 | #ifdef subprocesses |
29208e82 | 7505 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7506 | doc: /* Control type of device used to communicate with subprocesses. |
7507 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7508 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7509 | then a pipe is used in any case. | |
7510 | The value takes effect when `start-process' is called. */); | |
7511 | Vprocess_connection_type = Qt; | |
7512 | ||
7513 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7514 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7515 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7516 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7517 | is read in very small blocks, potentially resulting in very poor performance. | |
7518 | This behavior can be remedied to some extent by setting this variable to a | |
7519 | non-nil value, as it will automatically delay reading from such processes, to | |
7520 | allow them to produce more output before Emacs tries to read it. | |
7521 | If the value is t, the delay is reset after each write to the process; any other | |
7522 | non-nil value means that the delay is not reset on write. | |
7523 | The variable takes effect when `start-process' is called. */); | |
7524 | Vprocess_adaptive_read_buffering = Qt; | |
7525 | #endif | |
7526 | ||
7527 | defsubr (&Sprocessp); | |
7528 | defsubr (&Sget_process); | |
7529 | defsubr (&Sdelete_process); | |
7530 | defsubr (&Sprocess_status); | |
7531 | defsubr (&Sprocess_exit_status); | |
7532 | defsubr (&Sprocess_id); | |
7533 | defsubr (&Sprocess_name); | |
7534 | defsubr (&Sprocess_tty_name); | |
7535 | defsubr (&Sprocess_command); | |
7536 | defsubr (&Sset_process_buffer); | |
7537 | defsubr (&Sprocess_buffer); | |
7538 | defsubr (&Sprocess_mark); | |
7539 | defsubr (&Sset_process_filter); | |
7540 | defsubr (&Sprocess_filter); | |
7541 | defsubr (&Sset_process_sentinel); | |
7542 | defsubr (&Sprocess_sentinel); | |
7543 | defsubr (&Sset_process_window_size); | |
7544 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7545 | defsubr (&Sset_process_query_on_exit_flag); | |
7546 | defsubr (&Sprocess_query_on_exit_flag); | |
7547 | defsubr (&Sprocess_contact); | |
7548 | defsubr (&Sprocess_plist); | |
7549 | defsubr (&Sset_process_plist); | |
f388c88a EZ |
7550 | defsubr (&Sprocess_list); |
7551 | defsubr (&Sstart_process); | |
f388c88a EZ |
7552 | defsubr (&Sserial_process_configure); |
7553 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7554 | defsubr (&Sset_network_process_option); |
7555 | defsubr (&Smake_network_process); | |
7556 | defsubr (&Sformat_network_address); | |
5e617bc2 | 7557 | #if defined (HAVE_NET_IF_H) |
f388c88a EZ |
7558 | #ifdef SIOCGIFCONF |
7559 | defsubr (&Snetwork_interface_list); | |
7560 | #endif | |
5e617bc2 | 7561 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
f388c88a EZ |
7562 | defsubr (&Snetwork_interface_info); |
7563 | #endif | |
5e617bc2 | 7564 | #endif /* defined (HAVE_NET_IF_H) */ |
f388c88a EZ |
7565 | #ifdef DATAGRAM_SOCKETS |
7566 | defsubr (&Sprocess_datagram_address); | |
7567 | defsubr (&Sset_process_datagram_address); | |
7568 | #endif | |
7569 | defsubr (&Saccept_process_output); | |
7570 | defsubr (&Sprocess_send_region); | |
7571 | defsubr (&Sprocess_send_string); | |
7572 | defsubr (&Sinterrupt_process); | |
7573 | defsubr (&Skill_process); | |
7574 | defsubr (&Squit_process); | |
7575 | defsubr (&Sstop_process); | |
7576 | defsubr (&Scontinue_process); | |
7577 | defsubr (&Sprocess_running_child_p); | |
7578 | defsubr (&Sprocess_send_eof); | |
7579 | defsubr (&Ssignal_process); | |
7580 | defsubr (&Swaiting_for_user_input_p); | |
7581 | defsubr (&Sprocess_type); | |
7582 | defsubr (&Sset_process_coding_system); | |
7583 | defsubr (&Sprocess_coding_system); | |
7584 | defsubr (&Sset_process_filter_multibyte); | |
7585 | defsubr (&Sprocess_filter_multibyte_p); | |
7586 | ||
7587 | #endif /* subprocesses */ | |
7588 | ||
6720a7fb | 7589 | defsubr (&Sget_buffer_process); |
52a1b894 | 7590 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7591 | defsubr (&Slist_system_processes); |
a20878b6 | 7592 | defsubr (&Sprocess_attributes); |
6720a7fb | 7593 | } |