Commit | Line | Data |
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d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
95df8112 GM |
2 | |
3 | Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2011 | |
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> |
68c45bf0 | 23 | #include <signal.h> |
d0d6b7c5 JB |
24 | #include <stdio.h> |
25 | #include <errno.h> | |
26 | #include <setjmp.h> | |
27 | #include <sys/types.h> /* some typedefs are used in sys/file.h */ | |
28 | #include <sys/file.h> | |
29 | #include <sys/stat.h> | |
d7306fe6 | 30 | #include <setjmp.h> |
2026418c YM |
31 | #ifdef HAVE_INTTYPES_H |
32 | #include <inttypes.h> | |
33 | #endif | |
934e2a68 | 34 | |
93b4f699 | 35 | #include <unistd.h> |
e98d950b | 36 | #include <fcntl.h> |
e98d950b | 37 | |
f388c88a EZ |
38 | /* Only MS-DOS does not define `subprocesses'. */ |
39 | #ifdef subprocesses | |
40 | ||
d0d6b7c5 JB |
41 | #include <sys/socket.h> |
42 | #include <netdb.h> | |
43 | #include <netinet/in.h> | |
44 | #include <arpa/inet.h> | |
e690ca94 KS |
45 | |
46 | /* Are local (unix) sockets supported? */ | |
4624371d | 47 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
48 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
49 | #define AF_LOCAL AF_UNIX | |
50 | #endif | |
51 | #ifdef AF_LOCAL | |
52 | #define HAVE_LOCAL_SOCKETS | |
53 | #include <sys/un.h> | |
54 | #endif | |
55 | #endif | |
d0d6b7c5 | 56 | |
d0d6b7c5 | 57 | #include <sys/ioctl.h> |
32bc6709 DN |
58 | #if defined(HAVE_NET_IF_H) |
59 | #include <net/if.h> | |
60 | #endif /* HAVE_NET_IF_H */ | |
d0d6b7c5 JB |
61 | |
62 | #ifdef NEED_BSDTTY | |
63 | #include <bsdtty.h> | |
64 | #endif | |
65 | ||
08116b48 CY |
66 | #ifdef HAVE_RES_INIT |
67 | #include <netinet/in.h> | |
68 | #include <arpa/nameser.h> | |
69 | #include <resolv.h> | |
70 | #endif | |
71 | ||
3d608a86 J |
72 | #ifdef HAVE_UTIL_H |
73 | #include <util.h> | |
74 | #endif | |
75 | ||
9bf58201 DN |
76 | #ifdef HAVE_PTY_H |
77 | #include <pty.h> | |
78 | #endif | |
79 | ||
f388c88a EZ |
80 | #endif /* subprocesses */ |
81 | ||
fa8459a3 | 82 | #include "lisp.h" |
d0d6b7c5 | 83 | #include "systime.h" |
36ebaafa | 84 | #include "systty.h" |
d0d6b7c5 | 85 | |
d0d6b7c5 JB |
86 | #include "window.h" |
87 | #include "buffer.h" | |
5bbf78c1 | 88 | #include "character.h" |
0fa1789e | 89 | #include "coding.h" |
d0d6b7c5 | 90 | #include "process.h" |
428a555e | 91 | #include "frame.h" |
d0d6b7c5 JB |
92 | #include "termhooks.h" |
93 | #include "termopts.h" | |
94 | #include "commands.h" | |
3ec68006 | 95 | #include "keyboard.h" |
ececcbec | 96 | #include "blockinput.h" |
dfcf069d | 97 | #include "dispextern.h" |
e0016554 | 98 | #include "composite.h" |
30904ab7 | 99 | #include "atimer.h" |
f388c88a EZ |
100 | #include "sysselect.h" |
101 | #include "syssignal.h" | |
102 | #include "syswait.h" | |
8af55556 TZ |
103 | #ifdef HAVE_GNUTLS |
104 | #include "gnutls.h" | |
105 | #endif | |
d0d6b7c5 | 106 | |
872870b2 JD |
107 | #if defined (USE_GTK) || defined (HAVE_GCONF) |
108 | #include "xgselect.h" | |
109 | #endif /* defined (USE_GTK) || defined (HAVE_GCONF) */ | |
3d608a86 J |
110 | #ifdef HAVE_NS |
111 | #include "nsterm.h" | |
112 | #endif | |
57507bf8 | 113 | |
fdb183d6 DN |
114 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
115 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
116 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
117 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
118 | Lisp_Object QCname, QCtype; | |
119 | \f | |
120 | /* Non-zero if keyboard input is on hold, zero otherwise. */ | |
121 | ||
122 | static int kbd_is_on_hold; | |
123 | ||
fdb183d6 DN |
124 | /* Nonzero means don't run process sentinels. This is used |
125 | when exiting. */ | |
126 | int inhibit_sentinels; | |
127 | ||
f388c88a EZ |
128 | #ifdef subprocesses |
129 | ||
dd2281ae | 130 | Lisp_Object Qprocessp; |
324e68ba | 131 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 132 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
f00c449b | 133 | Lisp_Object Qlocal, Qipv4, Qdatagram, Qseqpacket; |
d888760c | 134 | Lisp_Object Qreal, Qnetwork, Qserial; |
e1652a86 KS |
135 | #ifdef AF_INET6 |
136 | Lisp_Object Qipv6; | |
137 | #endif | |
d888760c GM |
138 | Lisp_Object QCport, QCspeed, QCprocess; |
139 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; | |
140 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
f388c88a | 141 | Lisp_Object QCbuffer, QChost, QCservice; |
e690ca94 | 142 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 143 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 144 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
6545aada | 145 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
146 | /* QCfamily is declared and initialized in xfaces.c, |
147 | QCfilter in keyboard.c. */ | |
148 | extern Lisp_Object QCfamily, QCfilter; | |
149 | ||
d0d6b7c5 JB |
150 | /* Qexit is declared and initialized in eval.c. */ |
151 | ||
e0f712ba AC |
152 | /* QCfamily is defined in xfaces.c. */ |
153 | extern Lisp_Object QCfamily; | |
154 | /* QCfilter is defined in keyboard.c. */ | |
155 | extern Lisp_Object QCfilter; | |
156 | ||
d888760c GM |
157 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
158 | #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork)) | |
159 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
160 | #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial)) | |
d0d6b7c5 JB |
161 | |
162 | /* Define first descriptor number available for subprocesses. */ | |
d0d6b7c5 | 163 | #define FIRST_PROC_DESC 3 |
d0d6b7c5 | 164 | |
5f0929a7 RS |
165 | #ifndef HAVE_H_ERRNO |
166 | extern int h_errno; | |
167 | #endif | |
168 | ||
17d02632 KH |
169 | /* These next two vars are non-static since sysdep.c uses them in the |
170 | emulation of `select'. */ | |
d0d6b7c5 | 171 | /* Number of events of change of status of a process. */ |
17d02632 | 172 | int process_tick; |
d0d6b7c5 | 173 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 174 | int update_tick; |
d0d6b7c5 | 175 | |
dd2a17ab KS |
176 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
177 | ||
82d6e50b | 178 | /* Only W32 has this, it really means that select can't take write mask. */ |
dd2a17ab KS |
179 | #ifdef BROKEN_NON_BLOCKING_CONNECT |
180 | #undef NON_BLOCKING_CONNECT | |
82d6e50b | 181 | #define SELECT_CANT_DO_WRITE_MASK |
dd2a17ab KS |
182 | #else |
183 | #ifndef NON_BLOCKING_CONNECT | |
dd2a17ab KS |
184 | #ifdef HAVE_SELECT |
185 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
186 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
187 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
188 | #define NON_BLOCKING_CONNECT | |
189 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
190 | #endif /* O_NONBLOCK || O_NDELAY */ | |
191 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
192 | #endif /* HAVE_SELECT */ | |
dd2a17ab KS |
193 | #endif /* NON_BLOCKING_CONNECT */ |
194 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
195 | ||
e690ca94 KS |
196 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
197 | this system. We need to read full packets, so we need a | |
198 | "non-destructive" select. So we require either native select, | |
199 | or emulation of select using FIONREAD. */ | |
200 | ||
e690ca94 KS |
201 | #ifdef BROKEN_DATAGRAM_SOCKETS |
202 | #undef DATAGRAM_SOCKETS | |
203 | #else | |
204 | #ifndef DATAGRAM_SOCKETS | |
e690ca94 KS |
205 | #if defined (HAVE_SELECT) || defined (FIONREAD) |
206 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
207 | #define DATAGRAM_SOCKETS | |
208 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
209 | #endif /* HAVE_SELECT || FIONREAD */ | |
e690ca94 KS |
210 | #endif /* DATAGRAM_SOCKETS */ |
211 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
212 | ||
f00c449b SM |
213 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
214 | # define HAVE_SEQPACKET | |
215 | #endif | |
216 | ||
6b61353c KH |
217 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
218 | #ifdef EMACS_HAS_USECS | |
219 | #define ADAPTIVE_READ_BUFFERING | |
220 | #endif | |
221 | #endif | |
222 | ||
223 | #ifdef ADAPTIVE_READ_BUFFERING | |
224 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
225 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
226 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
227 | ||
db853b7a KS |
228 | /* Number of processes which have a non-zero read_output_delay, |
229 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
230 | |
231 | static int process_output_delay_count; | |
232 | ||
db853b7a | 233 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
234 | |
235 | static int process_output_skip; | |
236 | ||
6b61353c KH |
237 | #else |
238 | #define process_output_delay_count 0 | |
239 | #endif | |
240 | ||
f57e2426 J |
241 | static int keyboard_bit_set (SELECT_TYPE *); |
242 | static void deactivate_process (Lisp_Object); | |
243 | static void status_notify (struct Lisp_Process *); | |
244 | static int read_process_output (Lisp_Object, int); | |
245 | static void create_pty (Lisp_Object); | |
41d03b9a | 246 | |
583dcae4 | 247 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 248 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 249 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
250 | #define POLL_FOR_INPUT |
251 | #endif | |
252 | ||
d3da34e0 JB |
253 | static Lisp_Object get_process (register Lisp_Object name); |
254 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 255 | |
f388c88a EZ |
256 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
257 | ||
258 | static SELECT_TYPE input_wait_mask; | |
259 | ||
994d9841 | 260 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
261 | |
262 | static SELECT_TYPE non_keyboard_wait_mask; | |
263 | ||
994d9841 | 264 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
265 | |
266 | static SELECT_TYPE non_process_wait_mask; | |
267 | ||
3fad2ad2 | 268 | /* Mask for selecting for write. */ |
994d9841 | 269 | |
3fad2ad2 | 270 | static SELECT_TYPE write_mask; |
994d9841 | 271 | |
bad49fc7 | 272 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
273 | /* Mask of bits indicating the descriptors that we wait for connect to |
274 | complete on. Once they complete, they are removed from this mask | |
275 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
276 | ||
277 | static SELECT_TYPE connect_wait_mask; | |
278 | ||
279 | /* Number of bits set in connect_wait_mask. */ | |
280 | static int num_pending_connects; | |
281 | ||
bad49fc7 | 282 | #define IF_NON_BLOCKING_CONNECT(s) s |
f388c88a | 283 | #else /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 284 | #define IF_NON_BLOCKING_CONNECT(s) |
f388c88a | 285 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 286 | |
7d0e672e RS |
287 | /* The largest descriptor currently in use for a process object. */ |
288 | static int max_process_desc; | |
289 | ||
3fad2ad2 J |
290 | /* The largest descriptor currently in use for input. */ |
291 | static int max_input_desc; | |
994d9841 | 292 | |
d0d6b7c5 | 293 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
41f3aa98 | 294 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
295 | |
296 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 297 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
298 | |
299 | /* Buffered-ahead input char from process, indexed by channel. | |
300 | -1 means empty (no char is buffered). | |
301 | Used on sys V where the only way to tell if there is any | |
302 | output from the process is to read at least one char. | |
303 | Always -1 on systems that support FIONREAD. */ | |
304 | ||
e98d950b RS |
305 | /* Don't make static; need to access externally. */ |
306 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 307 | |
0fa1789e | 308 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
309 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
310 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 311 | |
e690ca94 KS |
312 | #ifdef DATAGRAM_SOCKETS |
313 | /* Table of `partner address' for datagram sockets. */ | |
314 | struct sockaddr_and_len { | |
315 | struct sockaddr *sa; | |
316 | int len; | |
317 | } datagram_address[MAXDESC]; | |
318 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 319 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
320 | #else |
321 | #define DATAGRAM_CHAN_P(chan) (0) | |
322 | #define DATAGRAM_CONN_P(proc) (0) | |
323 | #endif | |
324 | ||
93b4f699 RS |
325 | /* Maximum number of bytes to send to a pty without an eof. */ |
326 | static int pty_max_bytes; | |
3b9a3dfa | 327 | |
d0d6b7c5 | 328 | \f |
3fad2ad2 J |
329 | |
330 | struct fd_callback_data | |
331 | { | |
332 | fd_callback func; | |
333 | void *data; | |
334 | #define FOR_READ 1 | |
335 | #define FOR_WRITE 2 | |
336 | int condition; /* mask of the defines above. */ | |
337 | } fd_callback_info[MAXDESC]; | |
338 | ||
339 | ||
340 | /* Add a file descriptor FD to be monitored for when read is possible. | |
341 | When read is possible, call FUNC with argument DATA. */ | |
342 | ||
343 | void | |
344 | add_read_fd (int fd, fd_callback func, void *data) | |
345 | { | |
346 | xassert (fd < MAXDESC); | |
347 | add_keyboard_wait_descriptor (fd); | |
348 | ||
349 | fd_callback_info[fd].func = func; | |
350 | fd_callback_info[fd].data = data; | |
351 | fd_callback_info[fd].condition |= FOR_READ; | |
352 | } | |
353 | ||
354 | /* Stop monitoring file descriptor FD for when read is possible. */ | |
355 | ||
356 | void | |
357 | delete_read_fd (int fd) | |
358 | { | |
359 | xassert (fd < MAXDESC); | |
360 | delete_keyboard_wait_descriptor (fd); | |
361 | ||
362 | fd_callback_info[fd].condition &= ~FOR_READ; | |
363 | if (fd_callback_info[fd].condition == 0) | |
364 | { | |
365 | fd_callback_info[fd].func = 0; | |
366 | fd_callback_info[fd].data = 0; | |
367 | } | |
368 | } | |
369 | ||
370 | /* Add a file descriptor FD to be monitored for when write is possible. | |
371 | When write is possible, call FUNC with argument DATA. */ | |
372 | ||
373 | void | |
374 | add_write_fd (int fd, fd_callback func, void *data) | |
375 | { | |
376 | xassert (fd < MAXDESC); | |
377 | FD_SET (fd, &write_mask); | |
378 | if (fd > max_input_desc) | |
379 | max_input_desc = fd; | |
380 | ||
381 | fd_callback_info[fd].func = func; | |
382 | fd_callback_info[fd].data = data; | |
383 | fd_callback_info[fd].condition |= FOR_WRITE; | |
384 | } | |
385 | ||
386 | /* Stop monitoring file descriptor FD for when write is possible. */ | |
387 | ||
388 | void | |
389 | delete_write_fd (int fd) | |
390 | { | |
391 | int lim = max_input_desc; | |
392 | ||
393 | xassert (fd < MAXDESC); | |
394 | FD_CLR (fd, &write_mask); | |
395 | fd_callback_info[fd].condition &= ~FOR_WRITE; | |
396 | if (fd_callback_info[fd].condition == 0) | |
397 | { | |
398 | fd_callback_info[fd].func = 0; | |
399 | fd_callback_info[fd].data = 0; | |
400 | ||
401 | if (fd == max_input_desc) | |
402 | for (fd = lim; fd >= 0; fd--) | |
403 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) | |
404 | { | |
405 | max_input_desc = fd; | |
406 | break; | |
407 | } | |
51b59d79 | 408 | |
3fad2ad2 J |
409 | } |
410 | } | |
411 | ||
412 | \f | |
d0d6b7c5 JB |
413 | /* Compute the Lisp form of the process status, p->status, from |
414 | the numeric status that was returned by `wait'. */ | |
415 | ||
bba104c1 | 416 | static Lisp_Object status_convert (int); |
f9738840 | 417 | |
ff6daed3 | 418 | static void |
d3da34e0 | 419 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 420 | { |
6bfd98e7 | 421 | eassert (p->raw_status_new); |
bba104c1 | 422 | p->status = status_convert (p->raw_status); |
6bfd98e7 | 423 | p->raw_status_new = 0; |
d0d6b7c5 JB |
424 | } |
425 | ||
177c0ea7 | 426 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
427 | the list that we use internally. */ |
428 | ||
ff6daed3 | 429 | static Lisp_Object |
bba104c1 | 430 | status_convert (int w) |
d0d6b7c5 JB |
431 | { |
432 | if (WIFSTOPPED (w)) | |
433 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
434 | else if (WIFEXITED (w)) | |
435 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
436 | WCOREDUMP (w) ? Qt : Qnil)); | |
437 | else if (WIFSIGNALED (w)) | |
438 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
439 | WCOREDUMP (w) ? Qt : Qnil)); | |
440 | else | |
441 | return Qrun; | |
442 | } | |
443 | ||
444 | /* Given a status-list, extract the three pieces of information | |
445 | and store them individually through the three pointers. */ | |
446 | ||
ff6daed3 | 447 | static void |
d3da34e0 | 448 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, int *coredump) |
d0d6b7c5 JB |
449 | { |
450 | Lisp_Object tem; | |
451 | ||
bcd69aea | 452 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
453 | { |
454 | *symbol = l; | |
455 | *code = 0; | |
456 | *coredump = 0; | |
457 | } | |
458 | else | |
459 | { | |
70949dac KR |
460 | *symbol = XCAR (l); |
461 | tem = XCDR (l); | |
462 | *code = XFASTINT (XCAR (tem)); | |
463 | tem = XCDR (tem); | |
d0d6b7c5 JB |
464 | *coredump = !NILP (tem); |
465 | } | |
466 | } | |
467 | ||
468 | /* Return a string describing a process status list. */ | |
469 | ||
116c423c | 470 | static Lisp_Object |
d3da34e0 | 471 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 472 | { |
116c423c | 473 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
474 | Lisp_Object symbol; |
475 | int code, coredump; | |
476 | Lisp_Object string, string2; | |
477 | ||
478 | decode_status (status, &symbol, &code, &coredump); | |
479 | ||
480 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
481 | { | |
68c45bf0 | 482 | char *signame; |
ca9c0567 | 483 | synchronize_system_messages_locale (); |
68c45bf0 | 484 | signame = strsignal (code); |
b97ad9ea | 485 | if (signame == 0) |
66bd43d1 KH |
486 | string = build_string ("unknown"); |
487 | else | |
488 | { | |
489 | int c1, c2; | |
490 | ||
491 | string = make_unibyte_string (signame, strlen (signame)); | |
492 | if (! NILP (Vlocale_coding_system)) | |
493 | string = (code_convert_string_norecord | |
494 | (string, Vlocale_coding_system, 0)); | |
42a5b22f | 495 | c1 = STRING_CHAR (SDATA (string)); |
5da9919f | 496 | c2 = downcase (c1); |
66bd43d1 | 497 | if (c1 != c2) |
4735b74e | 498 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 499 | } |
d0d6b7c5 | 500 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
501 | return concat2 (string, string2); |
502 | } | |
503 | else if (EQ (symbol, Qexit)) | |
504 | { | |
116c423c KS |
505 | if (NETCONN1_P (p)) |
506 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
507 | if (code == 0) |
508 | return build_string ("finished\n"); | |
f2980264 | 509 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 510 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
511 | return concat3 (build_string ("exited abnormally with code "), |
512 | string, string2); | |
d0d6b7c5 | 513 | } |
dd2a17ab KS |
514 | else if (EQ (symbol, Qfailed)) |
515 | { | |
516 | string = Fnumber_to_string (make_number (code)); | |
517 | string2 = build_string ("\n"); | |
e690ca94 KS |
518 | return concat3 (build_string ("failed with code "), |
519 | string, string2); | |
dd2a17ab | 520 | } |
d0d6b7c5 JB |
521 | else |
522 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
523 | } | |
524 | \f | |
525 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 526 | |
9bf58201 DN |
527 | /* The file name of the pty opened by allocate_pty. */ |
528 | static char pty_name[24]; | |
529 | ||
875e6b94 KH |
530 | /* Open an available pty, returning a file descriptor. |
531 | Return -1 on failure. | |
532 | The file name of the terminal corresponding to the pty | |
533 | is left in the variable pty_name. */ | |
534 | ||
ff6daed3 | 535 | static int |
d3da34e0 | 536 | allocate_pty (void) |
d0d6b7c5 | 537 | { |
dfcf069d | 538 | register int c, i; |
d0d6b7c5 JB |
539 | int fd; |
540 | ||
541 | #ifdef PTY_ITERATION | |
542 | PTY_ITERATION | |
543 | #else | |
544 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
545 | for (i = 0; i < 16; i++) | |
546 | #endif | |
547 | { | |
26d7389d | 548 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
549 | #ifdef PTY_NAME_SPRINTF |
550 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
551 | #else |
552 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
553 | #endif /* no PTY_NAME_SPRINTF */ |
554 | ||
4d7c105e RS |
555 | #ifdef PTY_OPEN |
556 | PTY_OPEN; | |
557 | #else /* no PTY_OPEN */ | |
34967d0f | 558 | { |
34967d0f SM |
559 | { /* Some systems name their pseudoterminals so that there are gaps in |
560 | the usual sequence - for example, on HP9000/S700 systems, there | |
561 | are no pseudoterminals with names ending in 'f'. So we wait for | |
562 | three failures in a row before deciding that we've reached the | |
563 | end of the ptys. */ | |
564 | int failed_count = 0; | |
f3d9532b | 565 | |
34967d0f SM |
566 | if (stat (pty_name, &stb) < 0) |
567 | { | |
568 | failed_count++; | |
569 | if (failed_count >= 3) | |
570 | return -1; | |
571 | } | |
572 | else | |
573 | failed_count = 0; | |
32676c08 | 574 | } |
34967d0f SM |
575 | # ifdef O_NONBLOCK |
576 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
577 | # else | |
578 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
579 | # endif | |
34967d0f | 580 | } |
4d7c105e | 581 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
582 | |
583 | if (fd >= 0) | |
584 | { | |
585 | /* check to make certain that both sides are available | |
586 | this avoids a nasty yet stupid bug in rlogins */ | |
587 | #ifdef PTY_TTY_NAME_SPRINTF | |
588 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 589 | #else |
63136da6 | 590 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 591 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
592 | if (access (pty_name, 6) != 0) |
593 | { | |
68c45bf0 | 594 | emacs_close (fd); |
132d0475 | 595 | # ifndef __sgi |
d0d6b7c5 | 596 | continue; |
34967d0f | 597 | # else |
d0d6b7c5 | 598 | return -1; |
132d0475 | 599 | # endif /* __sgi */ |
d0d6b7c5 | 600 | } |
d0d6b7c5 JB |
601 | setup_pty (fd); |
602 | return fd; | |
603 | } | |
604 | } | |
605 | return -1; | |
606 | } | |
607 | #endif /* HAVE_PTYS */ | |
608 | \f | |
ff6daed3 | 609 | static Lisp_Object |
d3da34e0 | 610 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
611 | { |
612 | register Lisp_Object val, tem, name1; | |
613 | register struct Lisp_Process *p; | |
614 | char suffix[10]; | |
615 | register int i; | |
616 | ||
98423852 | 617 | p = allocate_process (); |
23d6bb9c | 618 | |
60f0fb11 SM |
619 | p->infd = -1; |
620 | p->outfd = -1; | |
621 | p->tick = 0; | |
622 | p->update_tick = 0; | |
6bfd98e7 | 623 | p->pid = 0; |
fd41ad98 | 624 | p->pty_flag = 0; |
6bfd98e7 | 625 | p->raw_status_new = 0; |
d0d6b7c5 JB |
626 | p->status = Qrun; |
627 | p->mark = Fmake_marker (); | |
847c048e | 628 | p->kill_without_query = 0; |
d0d6b7c5 | 629 | |
6b61353c | 630 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
631 | p->adaptive_read_buffering = 0; |
632 | p->read_output_delay = 0; | |
633 | p->read_output_skip = 0; | |
6b61353c KH |
634 | #endif |
635 | ||
8af55556 TZ |
636 | #ifdef HAVE_GNUTLS |
637 | p->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
8ed70bf3 | 638 | p->gnutls_log_level = 0; |
df7fcaff | 639 | p->gnutls_p = 0; |
8af55556 TZ |
640 | #endif |
641 | ||
d0d6b7c5 JB |
642 | /* If name is already in use, modify it until it is unused. */ |
643 | ||
644 | name1 = name; | |
645 | for (i = 1; ; i++) | |
646 | { | |
647 | tem = Fget_process (name1); | |
648 | if (NILP (tem)) break; | |
649 | sprintf (suffix, "<%d>", i); | |
650 | name1 = concat2 (name, build_string (suffix)); | |
651 | } | |
652 | name = name1; | |
653 | p->name = name; | |
23d6bb9c | 654 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
655 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
656 | return val; | |
657 | } | |
658 | ||
ff6daed3 | 659 | static void |
d3da34e0 | 660 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
661 | { |
662 | register Lisp_Object pair; | |
663 | ||
664 | pair = Frassq (proc, Vprocess_alist); | |
665 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
666 | |
667 | deactivate_process (proc); | |
668 | } | |
03f04413 | 669 | |
d0d6b7c5 JB |
670 | \f |
671 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 672 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 673 | (Lisp_Object object) |
d0d6b7c5 | 674 | { |
4ee3e309 | 675 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
676 | } |
677 | ||
678 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 679 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 680 | (register Lisp_Object name) |
d0d6b7c5 | 681 | { |
bcd69aea | 682 | if (PROCESSP (name)) |
d0d6b7c5 | 683 | return name; |
b7826503 | 684 | CHECK_STRING (name); |
d0d6b7c5 JB |
685 | return Fcdr (Fassoc (name, Vprocess_alist)); |
686 | } | |
687 | ||
ebb9e16f JB |
688 | /* This is how commands for the user decode process arguments. It |
689 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
690 | Buffers denote the first process in the buffer, and nil denotes the | |
691 | current buffer. */ | |
d0d6b7c5 | 692 | |
77b221b1 | 693 | static Lisp_Object |
d3da34e0 | 694 | get_process (register Lisp_Object name) |
d0d6b7c5 | 695 | { |
1619761d KH |
696 | register Lisp_Object proc, obj; |
697 | if (STRINGP (name)) | |
698 | { | |
699 | obj = Fget_process (name); | |
700 | if (NILP (obj)) | |
701 | obj = Fget_buffer (name); | |
702 | if (NILP (obj)) | |
d5db4077 | 703 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
704 | } |
705 | else if (NILP (name)) | |
706 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 707 | else |
1619761d KH |
708 | obj = name; |
709 | ||
710 | /* Now obj should be either a buffer object or a process object. | |
711 | */ | |
712 | if (BUFFERP (obj)) | |
d0d6b7c5 | 713 | { |
1619761d | 714 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 715 | if (NILP (proc)) |
4b4deea2 | 716 | error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj), name))); |
d0d6b7c5 | 717 | } |
d0d6b7c5 | 718 | else |
1619761d | 719 | { |
b7826503 | 720 | CHECK_PROCESS (obj); |
1619761d KH |
721 | proc = obj; |
722 | } | |
723 | return proc; | |
d0d6b7c5 JB |
724 | } |
725 | ||
a5cfdda8 KS |
726 | |
727 | #ifdef SIGCHLD | |
728 | /* Fdelete_process promises to immediately forget about the process, but in | |
729 | reality, Emacs needs to remember those processes until they have been | |
730 | treated by sigchld_handler; otherwise this handler would consider the | |
731 | process as being synchronous and say that the synchronous process is | |
732 | dead. */ | |
733 | static Lisp_Object deleted_pid_list; | |
734 | #endif | |
735 | ||
d0d6b7c5 | 736 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
737 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
738 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
739 | nil, indicating the current buffer's process. */) | |
5842a27b | 740 | (register Lisp_Object process) |
d0d6b7c5 | 741 | { |
ff6daed3 KS |
742 | register struct Lisp_Process *p; |
743 | ||
4ee3e309 | 744 | process = get_process (process); |
ff6daed3 KS |
745 | p = XPROCESS (process); |
746 | ||
6bfd98e7 | 747 | p->raw_status_new = 0; |
d888760c | 748 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 749 | { |
ff6daed3 | 750 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
60f0fb11 | 751 | p->tick = ++process_tick; |
ff6daed3 | 752 | status_notify (p); |
e42bdf01 | 753 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 754 | } |
60f0fb11 | 755 | else if (p->infd >= 0) |
d0d6b7c5 | 756 | { |
a5cfdda8 KS |
757 | #ifdef SIGCHLD |
758 | Lisp_Object symbol; | |
d30fe779 EZ |
759 | /* Assignment to EMACS_INT stops GCC whining about limited range |
760 | of data type. */ | |
29ed4d51 | 761 | EMACS_INT pid = p->pid; |
a5cfdda8 KS |
762 | |
763 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 764 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
765 | /* GC treated elements set to nil. */ |
766 | Fdelq (Qnil, deleted_pid_list)); | |
767 | /* If the process has already signaled, remove it from the list. */ | |
768 | if (p->raw_status_new) | |
769 | update_status (p); | |
770 | symbol = p->status; | |
771 | if (CONSP (p->status)) | |
772 | symbol = XCAR (p->status); | |
773 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
29ed4d51 CY |
774 | deleted_pid_list |
775 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
776 | else |
777 | #endif | |
778 | { | |
779 | Fkill_process (process, Qnil); | |
780 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ | |
781 | p->status | |
782 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); | |
60f0fb11 | 783 | p->tick = ++process_tick; |
a5cfdda8 | 784 | status_notify (p); |
e42bdf01 | 785 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 786 | } |
d0d6b7c5 | 787 | } |
4ee3e309 | 788 | remove_process (process); |
d0d6b7c5 JB |
789 | return Qnil; |
790 | } | |
791 | \f | |
792 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
793 | doc: /* Return the status of PROCESS. |
794 | The returned value is one of the following symbols: | |
795 | run -- for a process that is running. | |
796 | stop -- for a process stopped but continuable. | |
797 | exit -- for a process that has exited. | |
798 | signal -- for a process that has got a fatal signal. | |
799 | open -- for a network stream connection that is open. | |
e690ca94 | 800 | listen -- for a network stream server that is listening. |
fdb82f93 | 801 | closed -- for a network stream connection that is closed. |
e4984112 KS |
802 | connect -- when waiting for a non-blocking connection to complete. |
803 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
804 | nil -- if arg is a process name and no such process exists. |
805 | PROCESS may be a process, a buffer, the name of a process, or | |
806 | nil, indicating the current buffer's process. */) | |
5842a27b | 807 | (register Lisp_Object process) |
d0d6b7c5 JB |
808 | { |
809 | register struct Lisp_Process *p; | |
810 | register Lisp_Object status; | |
343f4114 | 811 | |
4ee3e309 EN |
812 | if (STRINGP (process)) |
813 | process = Fget_process (process); | |
343f4114 | 814 | else |
4ee3e309 | 815 | process = get_process (process); |
343f4114 | 816 | |
4ee3e309 EN |
817 | if (NILP (process)) |
818 | return process; | |
343f4114 | 819 | |
4ee3e309 | 820 | p = XPROCESS (process); |
6bfd98e7 | 821 | if (p->raw_status_new) |
d0d6b7c5 JB |
822 | update_status (p); |
823 | status = p->status; | |
bcd69aea | 824 | if (CONSP (status)) |
70949dac | 825 | status = XCAR (status); |
d888760c | 826 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 827 | { |
e690ca94 | 828 | if (EQ (status, Qexit)) |
d0d6b7c5 | 829 | status = Qclosed; |
e690ca94 KS |
830 | else if (EQ (p->command, Qt)) |
831 | status = Qstop; | |
832 | else if (EQ (status, Qrun)) | |
833 | status = Qopen; | |
d0d6b7c5 JB |
834 | } |
835 | return status; | |
836 | } | |
837 | ||
838 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
839 | 1, 1, 0, | |
fdb82f93 PJ |
840 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
841 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 842 | (register Lisp_Object process) |
d0d6b7c5 | 843 | { |
b7826503 | 844 | CHECK_PROCESS (process); |
6bfd98e7 | 845 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 EN |
846 | update_status (XPROCESS (process)); |
847 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 848 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
849 | return make_number (0); |
850 | } | |
851 | ||
852 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 853 | doc: /* Return the process id of PROCESS. |
f3d9532b | 854 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 855 | For a network connection, this value is nil. */) |
5842a27b | 856 | (register Lisp_Object process) |
d0d6b7c5 | 857 | { |
d30fe779 EZ |
858 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
859 | data type. */ | |
860 | EMACS_INT pid; | |
861 | ||
b7826503 | 862 | CHECK_PROCESS (process); |
d30fe779 EZ |
863 | pid = XPROCESS (process)->pid; |
864 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
865 | } |
866 | ||
867 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
868 | doc: /* Return the name of PROCESS, as a string. |
869 | This is the name of the program invoked in PROCESS, | |
870 | possibly modified to make it unique among process names. */) | |
5842a27b | 871 | (register Lisp_Object process) |
d0d6b7c5 | 872 | { |
b7826503 | 873 | CHECK_PROCESS (process); |
4ee3e309 | 874 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
875 | } |
876 | ||
877 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
878 | doc: /* Return the command that was executed to start PROCESS. |
879 | This is a list of strings, the first string being the program executed | |
880 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
881 | For a network or serial process, this is nil (process is running) or t |
882 | \(process is stopped). */) | |
5842a27b | 883 | (register Lisp_Object process) |
d0d6b7c5 | 884 | { |
b7826503 | 885 | CHECK_PROCESS (process); |
4ee3e309 | 886 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
887 | } |
888 | ||
3b9a3dfa | 889 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
890 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
891 | This is the terminal that the process itself reads and writes on, | |
892 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 893 | (register Lisp_Object process) |
3b9a3dfa | 894 | { |
b7826503 | 895 | CHECK_PROCESS (process); |
4ee3e309 | 896 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
897 | } |
898 | ||
d0d6b7c5 | 899 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
900 | 2, 2, 0, |
901 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
5842a27b | 902 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 903 | { |
e690ca94 KS |
904 | struct Lisp_Process *p; |
905 | ||
b7826503 | 906 | CHECK_PROCESS (process); |
d0d6b7c5 | 907 | if (!NILP (buffer)) |
b7826503 | 908 | CHECK_BUFFER (buffer); |
e690ca94 KS |
909 | p = XPROCESS (process); |
910 | p->buffer = buffer; | |
d888760c | 911 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 912 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); |
03f04413 | 913 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
914 | return buffer; |
915 | } | |
916 | ||
917 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
918 | 1, 1, 0, |
919 | doc: /* Return the buffer PROCESS is associated with. | |
920 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 921 | (register Lisp_Object process) |
d0d6b7c5 | 922 | { |
b7826503 | 923 | CHECK_PROCESS (process); |
4ee3e309 | 924 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
925 | } |
926 | ||
927 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
928 | 1, 1, 0, |
929 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 930 | (register Lisp_Object process) |
d0d6b7c5 | 931 | { |
b7826503 | 932 | CHECK_PROCESS (process); |
4ee3e309 | 933 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
934 | } |
935 | ||
936 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
937 | 2, 2, 0, |
938 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 939 | A value of t means stop accepting output from the process. |
3452df9e KS |
940 | |
941 | When a process has a filter, its buffer is not used for output. | |
942 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 943 | passed to the filter. |
3452df9e | 944 | |
fdb82f93 | 945 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
946 | The string argument is normally a multibyte string, except: |
947 | - if the process' input coding system is no-conversion or raw-text, | |
948 | it is a unibyte string (the non-converted input), or else | |
949 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
950 | string (the result of converting the decoded input multibyte | |
951 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 952 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 953 | { |
471f86b9 | 954 | struct Lisp_Process *p; |
177c0ea7 | 955 | |
b7826503 | 956 | CHECK_PROCESS (process); |
471f86b9 GM |
957 | p = XPROCESS (process); |
958 | ||
959 | /* Don't signal an error if the process' input file descriptor | |
960 | is closed. This could make debugging Lisp more difficult, | |
961 | for example when doing something like | |
962 | ||
963 | (setq process (start-process ...)) | |
964 | (debug) | |
965 | (set-process-filter process ...) */ | |
177c0ea7 | 966 | |
60f0fb11 | 967 | if (p->infd >= 0) |
a69281ff | 968 | { |
e690ca94 | 969 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 970 | { |
60f0fb11 SM |
971 | FD_CLR (p->infd, &input_wait_mask); |
972 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 973 | } |
e690ca94 | 974 | else if (EQ (p->filter, Qt) |
d888760c GM |
975 | /* Network or serial process not stopped: */ |
976 | && !EQ (p->command, Qt)) | |
471f86b9 | 977 | { |
60f0fb11 SM |
978 | FD_SET (p->infd, &input_wait_mask); |
979 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 980 | } |
a69281ff | 981 | } |
177c0ea7 | 982 | |
471f86b9 | 983 | p->filter = filter; |
d888760c | 984 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 985 | p->childp = Fplist_put (p->childp, QCfilter, filter); |
03f04413 | 986 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
987 | return filter; |
988 | } | |
989 | ||
990 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
991 | 1, 1, 0, |
992 | doc: /* Returns the filter function of PROCESS; nil if none. | |
993 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 994 | (register Lisp_Object process) |
d0d6b7c5 | 995 | { |
b7826503 | 996 | CHECK_PROCESS (process); |
4ee3e309 | 997 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
998 | } |
999 | ||
1000 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1001 | 2, 2, 0, |
1002 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1003 | The sentinel is called as a function when the process changes state. | |
1004 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 1005 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1006 | { |
6b61353c KH |
1007 | struct Lisp_Process *p; |
1008 | ||
b7826503 | 1009 | CHECK_PROCESS (process); |
6b61353c KH |
1010 | p = XPROCESS (process); |
1011 | ||
1012 | p->sentinel = sentinel; | |
d888760c | 1013 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6b61353c | 1014 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); |
d0d6b7c5 JB |
1015 | return sentinel; |
1016 | } | |
1017 | ||
1018 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1019 | 1, 1, 0, |
1020 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1021 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 1022 | (register Lisp_Object process) |
d0d6b7c5 | 1023 | { |
b7826503 | 1024 | CHECK_PROCESS (process); |
4ee3e309 | 1025 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1026 | } |
1027 | ||
396df322 | 1028 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1029 | Sset_process_window_size, 3, 3, 0, |
1030 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1031 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1032 | { |
b7826503 PJ |
1033 | CHECK_PROCESS (process); |
1034 | CHECK_NATNUM (height); | |
1035 | CHECK_NATNUM (width); | |
177c0ea7 | 1036 | |
60f0fb11 SM |
1037 | if (XPROCESS (process)->infd < 0 |
1038 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1039 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1040 | return Qnil; |
1041 | else | |
1042 | return Qt; | |
1043 | } | |
1044 | ||
52a1b894 | 1045 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1046 | Fset_process_inherit_coding_system_flag, |
1047 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1048 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1049 | If the second argument FLAG is non-nil, then the variable | |
1050 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1051 | will be bound to the value of the coding system used to decode | |
1052 | the process output. | |
1053 | ||
1054 | This is useful when the coding system specified for the process buffer | |
1055 | leaves either the character code conversion or the end-of-line conversion | |
1056 | unspecified, or if the coding system used to decode the process output | |
1057 | is more appropriate for saving the process buffer. | |
1058 | ||
1059 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1060 | starting the process is an alternative way of setting the inherit flag | |
1061 | for the process which will run. */) | |
5842a27b | 1062 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1063 | { |
b7826503 | 1064 | CHECK_PROCESS (process); |
60f0fb11 | 1065 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1066 | return flag; |
1067 | } | |
1068 | ||
e690ca94 KS |
1069 | DEFUN ("set-process-query-on-exit-flag", |
1070 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1071 | 2, 2, 0, | |
1072 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1073 | If the second argument FLAG is non-nil, Emacs will query the user before |
10be7e0d | 1074 | exiting or killing a buffer if PROCESS is running. */) |
5842a27b | 1075 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1076 | { |
b7826503 | 1077 | CHECK_PROCESS (process); |
60f0fb11 | 1078 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1079 | return flag; |
d0d6b7c5 | 1080 | } |
312c9964 | 1081 | |
e690ca94 KS |
1082 | DEFUN ("process-query-on-exit-flag", |
1083 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1084 | 1, 1, 0, |
f3d9532b | 1085 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1086 | (register Lisp_Object process) |
de282a05 | 1087 | { |
b7826503 | 1088 | CHECK_PROCESS (process); |
60f0fb11 | 1089 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1090 | } |
1091 | ||
1092 | #ifdef DATAGRAM_SOCKETS | |
d3da34e0 | 1093 | Lisp_Object Fprocess_datagram_address (Lisp_Object process); |
e690ca94 KS |
1094 | #endif |
1095 | ||
1096 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1097 | 1, 2, 0, | |
1098 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1099 | For a network or serial connection, the value depends on the optional |
1100 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1101 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1102 | connection. If KEY is t, the complete contact information for the | |
1103 | connection is returned, else the specific value for the keyword KEY is | |
1104 | returned. See `make-network-process' or `make-serial-process' for a | |
1105 | list of keywords. */) | |
5842a27b | 1106 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1107 | { |
1108 | Lisp_Object contact; | |
1109 | ||
1110 | CHECK_PROCESS (process); | |
1111 | contact = XPROCESS (process)->childp; | |
1112 | ||
1113 | #ifdef DATAGRAM_SOCKETS | |
1114 | if (DATAGRAM_CONN_P (process) | |
1115 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1116 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1117 | Fprocess_datagram_address (process)); |
1118 | #endif | |
1119 | ||
d888760c | 1120 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1121 | return contact; |
d888760c | 1122 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1123 | return Fcons (Fplist_get (contact, QChost), |
1124 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1125 | if (NILP (key) && SERIALCONN_P (process)) |
1126 | return Fcons (Fplist_get (contact, QCport), | |
1127 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1128 | return Fplist_get (contact, key); |
de282a05 RS |
1129 | } |
1130 | ||
faa7db08 KS |
1131 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1132 | 1, 1, 0, | |
1133 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1134 | (register Lisp_Object process) |
365aee82 | 1135 | { |
ac4a7584 | 1136 | CHECK_PROCESS (process); |
faa7db08 | 1137 | return XPROCESS (process)->plist; |
ac4a7584 | 1138 | } |
365aee82 | 1139 | |
faa7db08 KS |
1140 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1141 | 2, 2, 0, | |
26a086c6 | 1142 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1143 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1144 | { |
365aee82 | 1145 | CHECK_PROCESS (process); |
faa7db08 | 1146 | CHECK_LIST (plist); |
365aee82 | 1147 | |
faa7db08 | 1148 | XPROCESS (process)->plist = plist; |
26a086c6 | 1149 | return plist; |
365aee82 KS |
1150 | } |
1151 | ||
312c9964 RS |
1152 | #if 0 /* Turned off because we don't currently record this info |
1153 | in the process. Perhaps add it. */ | |
1154 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1155 | doc: /* Return the connection type of PROCESS. |
1156 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1157 | a socket connection. */) | |
5842a27b | 1158 | (Lisp_Object process) |
312c9964 RS |
1159 | { |
1160 | return XPROCESS (process)->type; | |
1161 | } | |
1162 | #endif | |
2a7bb882 | 1163 | |
d888760c GM |
1164 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1165 | doc: /* Return the connection type of PROCESS. | |
1166 | The value is either the symbol `real', `network', or `serial'. | |
1167 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1168 | nil, indicating the current buffer's process. */) | |
5842a27b | 1169 | (Lisp_Object process) |
d888760c GM |
1170 | { |
1171 | Lisp_Object proc; | |
1172 | proc = get_process (process); | |
1173 | return XPROCESS (proc)->type; | |
1174 | } | |
991234f0 | 1175 | |
991234f0 | 1176 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1177 | 1, 2, 0, |
991234f0 | 1178 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1179 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1180 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1181 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1182 | number in the string, even when present in ADDRESS. |
1183 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1184 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1185 | { |
991234f0 KS |
1186 | if (NILP (address)) |
1187 | return Qnil; | |
1188 | ||
1189 | if (STRINGP (address)) /* AF_LOCAL */ | |
1190 | return address; | |
1191 | ||
e1652a86 | 1192 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1193 | { |
1194 | register struct Lisp_Vector *p = XVECTOR (address); | |
ded83665 | 1195 | Lisp_Object args[10]; |
0dccee41 | 1196 | int nargs, i; |
991234f0 | 1197 | |
e1652a86 | 1198 | if (p->size == 4 || (p->size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1199 | { |
1200 | args[0] = build_string ("%d.%d.%d.%d"); | |
1201 | nargs = 4; | |
1202 | } | |
1203 | else if (p->size == 5) | |
1204 | { | |
1205 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1206 | nargs = 5; | |
1207 | } | |
e1652a86 KS |
1208 | else if (p->size == 8 || (p->size == 9 && !NILP (omit_port))) |
1209 | { | |
1210 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1211 | nargs = 8; | |
1212 | } | |
1213 | else if (p->size == 9) | |
1214 | { | |
1215 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1216 | nargs = 9; | |
1217 | } | |
0dccee41 | 1218 | else |
991234f0 KS |
1219 | return Qnil; |
1220 | ||
0dccee41 | 1221 | for (i = 0; i < nargs; i++) |
cbf23adb JB |
1222 | { |
1223 | EMACS_INT element = XINT (p->contents[i]); | |
1224 | ||
1225 | if (element < 0 || element > 65535) | |
1226 | return Qnil; | |
1227 | ||
1228 | if (nargs <= 5 /* IPv4 */ | |
1229 | && i < 4 /* host, not port */ | |
1230 | && element > 255) | |
1231 | return Qnil; | |
1232 | ||
1233 | args[i+1] = p->contents[i]; | |
1234 | } | |
1235 | ||
0dccee41 | 1236 | return Fformat (nargs+1, args); |
991234f0 KS |
1237 | } |
1238 | ||
1239 | if (CONSP (address)) | |
1240 | { | |
1241 | Lisp_Object args[2]; | |
1242 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1243 | args[1] = Fcar (address); |
991234f0 | 1244 | return Fformat (2, args); |
991234f0 KS |
1245 | } |
1246 | ||
1247 | return Qnil; | |
1248 | } | |
d0d6b7c5 | 1249 | \f |
ff6daed3 | 1250 | static Lisp_Object |
d3da34e0 | 1251 | list_processes_1 (Lisp_Object query_only) |
d0d6b7c5 JB |
1252 | { |
1253 | register Lisp_Object tail, tem; | |
1254 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1255 | register struct Lisp_Process *p; |
e690ca94 KS |
1256 | char tembuf[300]; |
1257 | int w_proc, w_buffer, w_tty; | |
1eed3bdc | 1258 | int exited = 0; |
e690ca94 KS |
1259 | Lisp_Object i_status, i_buffer, i_tty, i_command; |
1260 | ||
1261 | w_proc = 4; /* Proc */ | |
1262 | w_buffer = 6; /* Buffer */ | |
1263 | w_tty = 0; /* Omit if no ttys */ | |
1264 | ||
99784d63 | 1265 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
e690ca94 KS |
1266 | { |
1267 | int i; | |
1268 | ||
99784d63 | 1269 | proc = Fcdr (XCAR (tail)); |
e690ca94 | 1270 | p = XPROCESS (proc); |
d888760c | 1271 | if (NILP (p->type)) |
e690ca94 | 1272 | continue; |
60f0fb11 | 1273 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 KS |
1274 | continue; |
1275 | if (STRINGP (p->name) | |
d5db4077 | 1276 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1277 | w_proc = i; |
1278 | if (!NILP (p->buffer)) | |
1279 | { | |
4b4deea2 | 1280 | if (NILP (BVAR (XBUFFER (p->buffer), name))) |
e69c4cae SM |
1281 | { |
1282 | if (w_buffer < 8) | |
1283 | w_buffer = 8; /* (Killed) */ | |
1284 | } | |
4b4deea2 | 1285 | else if ((i = SCHARS (BVAR (XBUFFER (p->buffer), name)), (i > w_buffer))) |
e690ca94 KS |
1286 | w_buffer = i; |
1287 | } | |
1288 | if (STRINGP (p->tty_name) | |
d5db4077 | 1289 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1290 | w_tty = i; |
1291 | } | |
1292 | ||
1293 | XSETFASTINT (i_status, w_proc + 1); | |
1294 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1295 | if (w_tty) | |
1296 | { | |
1297 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
d3c0009d AS |
1298 | XSETFASTINT (i_command, XFASTINT (i_tty) + w_tty + 1); |
1299 | } | |
1300 | else | |
1301 | { | |
e690ca94 KS |
1302 | i_tty = Qnil; |
1303 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1304 | } | |
d0d6b7c5 | 1305 | |
22719df2 | 1306 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1307 | |
1308 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
4b4deea2 | 1309 | BVAR (current_buffer, undo_list) = Qt; |
d0d6b7c5 | 1310 | |
4b4deea2 | 1311 | BVAR (current_buffer, truncate_lines) = Qt; |
d0d6b7c5 | 1312 | |
e690ca94 KS |
1313 | write_string ("Proc", -1); |
1314 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1315 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1316 | if (!NILP (i_tty)) | |
1317 | { | |
1318 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1319 | } | |
1320 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1321 | write_string ("\n", -1); | |
1322 | ||
1323 | write_string ("----", -1); | |
1324 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1325 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1326 | if (!NILP (i_tty)) | |
1327 | { | |
1328 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1329 | } | |
1330 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1331 | write_string ("\n", -1); | |
d0d6b7c5 | 1332 | |
99784d63 | 1333 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 JB |
1334 | { |
1335 | Lisp_Object symbol; | |
1336 | ||
99784d63 | 1337 | proc = Fcdr (XCAR (tail)); |
d0d6b7c5 | 1338 | p = XPROCESS (proc); |
d888760c | 1339 | if (NILP (p->type)) |
d0d6b7c5 | 1340 | continue; |
60f0fb11 | 1341 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 | 1342 | continue; |
d0d6b7c5 JB |
1343 | |
1344 | Finsert (1, &p->name); | |
e690ca94 | 1345 | Findent_to (i_status, minspace); |
d0d6b7c5 | 1346 | |
6bfd98e7 | 1347 | if (p->raw_status_new) |
d0d6b7c5 JB |
1348 | update_status (p); |
1349 | symbol = p->status; | |
bcd69aea | 1350 | if (CONSP (p->status)) |
70949dac | 1351 | symbol = XCAR (p->status); |
d0d6b7c5 | 1352 | |
d0d6b7c5 JB |
1353 | if (EQ (symbol, Qsignal)) |
1354 | { | |
1355 | Lisp_Object tem; | |
1356 | tem = Fcar (Fcdr (p->status)); | |
7c2fb837 | 1357 | Fprinc (symbol, Qnil); |
d0d6b7c5 | 1358 | } |
d888760c | 1359 | else if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 1360 | { |
e690ca94 | 1361 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1362 | write_string ("closed", -1); |
e690ca94 KS |
1363 | else if (EQ (p->command, Qt)) |
1364 | write_string ("stopped", -1); | |
1365 | else if (EQ (symbol, Qrun)) | |
1366 | write_string ("open", -1); | |
d0d6b7c5 JB |
1367 | else |
1368 | Fprinc (symbol, Qnil); | |
1369 | } | |
d888760c GM |
1370 | else if (SERIALCONN1_P (p)) |
1371 | { | |
1372 | write_string ("running", -1); | |
1373 | } | |
d0d6b7c5 JB |
1374 | else |
1375 | Fprinc (symbol, Qnil); | |
1376 | ||
1377 | if (EQ (symbol, Qexit)) | |
1378 | { | |
1379 | Lisp_Object tem; | |
1380 | tem = Fcar (Fcdr (p->status)); | |
1381 | if (XFASTINT (tem)) | |
1382 | { | |
3162bafa | 1383 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1384 | write_string (tembuf, -1); |
1385 | } | |
1386 | } | |
1387 | ||
1eed3bdc KS |
1388 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) || EQ (symbol, Qclosed)) |
1389 | exited++; | |
d0d6b7c5 | 1390 | |
e690ca94 | 1391 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1392 | if (NILP (p->buffer)) |
1393 | insert_string ("(none)"); | |
4b4deea2 | 1394 | else if (NILP (BVAR (XBUFFER (p->buffer), name))) |
d0d6b7c5 JB |
1395 | insert_string ("(Killed)"); |
1396 | else | |
4b4deea2 | 1397 | Finsert (1, &BVAR (XBUFFER (p->buffer), name)); |
d0d6b7c5 | 1398 | |
e690ca94 KS |
1399 | if (!NILP (i_tty)) |
1400 | { | |
1401 | Findent_to (i_tty, minspace); | |
1402 | if (STRINGP (p->tty_name)) | |
1403 | Finsert (1, &p->tty_name); | |
1404 | } | |
a9fde32e | 1405 | |
e690ca94 | 1406 | Findent_to (i_command, minspace); |
a9fde32e | 1407 | |
e690ca94 KS |
1408 | if (EQ (p->status, Qlisten)) |
1409 | { | |
1410 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1411 | if (INTEGERP (port)) | |
1412 | port = Fnumber_to_string (port); | |
991234f0 | 1413 | if (NILP (port)) |
0dccee41 | 1414 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1415 | sprintf (tembuf, "(network %s server on %s)\n", |
60f0fb11 | 1416 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
51b59d79 | 1417 | (STRINGP (port) ? SSDATA (port) : "?")); |
e690ca94 KS |
1418 | insert_string (tembuf); |
1419 | } | |
1420 | else if (NETCONN1_P (p)) | |
63136da6 | 1421 | { |
e690ca94 KS |
1422 | /* For a local socket, there is no host name, |
1423 | so display service instead. */ | |
1424 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1425 | if (!STRINGP (host)) | |
1426 | { | |
1427 | host = Fplist_get (p->childp, QCservice); | |
1428 | if (INTEGERP (host)) | |
1429 | host = Fnumber_to_string (host); | |
1430 | } | |
991234f0 | 1431 | if (NILP (host)) |
0dccee41 | 1432 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1433 | sprintf (tembuf, "(network %s connection to %s)\n", |
60f0fb11 | 1434 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
51b59d79 | 1435 | (STRINGP (host) ? SSDATA (host) : "?")); |
d0d6b7c5 | 1436 | insert_string (tembuf); |
63136da6 | 1437 | } |
d888760c GM |
1438 | else if (SERIALCONN1_P (p)) |
1439 | { | |
1440 | Lisp_Object port = Fplist_get (p->childp, QCport); | |
1441 | Lisp_Object speed = Fplist_get (p->childp, QCspeed); | |
1442 | insert_string ("(serial port "); | |
1443 | if (STRINGP (port)) | |
42a5b22f | 1444 | insert_string (SSDATA (port)); |
d888760c GM |
1445 | else |
1446 | insert_string ("?"); | |
1447 | if (INTEGERP (speed)) | |
1448 | { | |
fa24b114 | 1449 | sprintf (tembuf, " at %ld b/s", (long) XINT (speed)); |
d888760c GM |
1450 | insert_string (tembuf); |
1451 | } | |
1452 | insert_string (")\n"); | |
1453 | } | |
177c0ea7 | 1454 | else |
d0d6b7c5 JB |
1455 | { |
1456 | tem = p->command; | |
1457 | while (1) | |
1458 | { | |
1459 | tem1 = Fcar (tem); | |
850d0752 NR |
1460 | if (NILP (tem1)) |
1461 | break; | |
d0d6b7c5 JB |
1462 | Finsert (1, &tem1); |
1463 | tem = Fcdr (tem); | |
1464 | if (NILP (tem)) | |
1465 | break; | |
1466 | insert_string (" "); | |
1467 | } | |
1468 | insert_string ("\n"); | |
1469 | } | |
1470 | } | |
1eed3bdc | 1471 | if (exited) |
e42bdf01 CY |
1472 | { |
1473 | status_notify (NULL); | |
1474 | redisplay_preserve_echo_area (13); | |
1475 | } | |
d0d6b7c5 JB |
1476 | return Qnil; |
1477 | } | |
1478 | ||
e690ca94 | 1479 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1480 | doc: /* Display a list of all processes. |
e690ca94 KS |
1481 | If optional argument QUERY-ONLY is non-nil, only processes with |
1482 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1483 | Any process listed as exited or signaled is actually eliminated |
1484 | after the listing is made. */) | |
5842a27b | 1485 | (Lisp_Object query_only) |
d0d6b7c5 JB |
1486 | { |
1487 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1488 | list_processes_1, query_only); |
d0d6b7c5 JB |
1489 | return Qnil; |
1490 | } | |
1491 | ||
1492 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1493 | doc: /* Return a list of all processes. */) |
5842a27b | 1494 | (void) |
d0d6b7c5 JB |
1495 | { |
1496 | return Fmapcar (Qcdr, Vprocess_alist); | |
1497 | } | |
1498 | \f | |
b0310da4 JB |
1499 | /* Starting asynchronous inferior processes. */ |
1500 | ||
d3da34e0 | 1501 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1502 | |
d0d6b7c5 | 1503 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1504 | doc: /* Start a program in a subprocess. Return the process object for it. |
1505 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1506 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1507 | |
1508 | Process output (both standard output and standard error streams) goes | |
1509 | at end of BUFFER, unless you specify an output stream or filter | |
1510 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1511 | this process is not associated with any buffer. |
1512 | ||
850d0752 NR |
1513 | PROGRAM is the program file name. It is searched for in PATH. If |
1514 | nil, just associate a pty with the buffer. Remaining arguments are | |
1515 | strings to give program as arguments. | |
320aebc9 | 1516 | |
4b6c5eee EZ |
1517 | If you want to separate standard output from standard error, invoke |
1518 | the command through a shell and redirect one of them using the shell | |
1519 | syntax. | |
320aebc9 | 1520 | |
3ecdf100 | 1521 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
5842a27b | 1522 | (int nargs, register Lisp_Object *args) |
d0d6b7c5 | 1523 | { |
1e30af70 | 1524 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1525 | register unsigned char **new_argv; |
d0d6b7c5 | 1526 | register int i; |
aed13378 | 1527 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1528 | |
1529 | buffer = args[1]; | |
1530 | if (!NILP (buffer)) | |
1531 | buffer = Fget_buffer_create (buffer); | |
1532 | ||
1e30af70 JB |
1533 | /* Make sure that the child will be able to chdir to the current |
1534 | buffer's current directory, or its unhandled equivalent. We | |
1535 | can't just have the child check for an error when it does the | |
1536 | chdir, since it's in a vfork. | |
1537 | ||
1538 | We have to GCPRO around this because Fexpand_file_name and | |
1539 | Funhandled_file_name_directory might call a file name handling | |
1540 | function. The argument list is protected by the caller, so all | |
1541 | we really have to worry about is buffer. */ | |
1542 | { | |
1543 | struct gcpro gcpro1, gcpro2; | |
1544 | ||
4b4deea2 | 1545 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1546 | |
1547 | GCPRO2 (buffer, current_dir); | |
1548 | ||
ca319910 SM |
1549 | current_dir = Funhandled_file_name_directory (current_dir); |
1550 | if (NILP (current_dir)) | |
1551 | /* If the file name handler says that current_dir is unreachable, use | |
1552 | a sensible default. */ | |
1553 | current_dir = build_string ("~/"); | |
1554 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1555 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1556 | report_file_error ("Setting current directory", | |
4b4deea2 | 1557 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1558 | |
1559 | UNGCPRO; | |
1560 | } | |
1561 | ||
d0d6b7c5 | 1562 | name = args[0]; |
b7826503 | 1563 | CHECK_STRING (name); |
d0d6b7c5 JB |
1564 | |
1565 | program = args[2]; | |
1566 | ||
850d0752 NR |
1567 | if (!NILP (program)) |
1568 | CHECK_STRING (program); | |
d0d6b7c5 | 1569 | |
d0d6b7c5 | 1570 | proc = make_process (name); |
b0310da4 JB |
1571 | /* If an error occurs and we can't start the process, we want to |
1572 | remove it from the process list. This means that each error | |
1573 | check in create_process doesn't need to call remove_process | |
1574 | itself; it's all taken care of here. */ | |
1575 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1576 | |
1577 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1578 | XPROCESS (proc)->plist = Qnil; |
d888760c | 1579 | XPROCESS (proc)->type = Qreal; |
d0d6b7c5 JB |
1580 | XPROCESS (proc)->buffer = buffer; |
1581 | XPROCESS (proc)->sentinel = Qnil; | |
1582 | XPROCESS (proc)->filter = Qnil; | |
1583 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); | |
1584 | ||
8af55556 TZ |
1585 | #ifdef HAVE_GNUTLS |
1586 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1587 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
1588 | XPROCESS (proc)->gnutls_cred_type = Qnil; | |
1589 | #endif | |
1590 | ||
6b61353c | 1591 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1592 | XPROCESS (proc)->adaptive_read_buffering |
1593 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1594 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1595 | #endif |
1596 | ||
7af71e17 | 1597 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1598 | if (BUFFERP (buffer)) |
d8a2934e RS |
1599 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1600 | BUF_ZV (XBUFFER (buffer)), | |
1601 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1602 | |
67918941 | 1603 | { |
d5d4ae71 KH |
1604 | /* Decide coding systems for communicating with the process. Here |
1605 | we don't setup the structure coding_system nor pay attention to | |
1606 | unibyte mode. They are done in create_process. */ | |
1607 | ||
67918941 RS |
1608 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1609 | Lisp_Object coding_systems = Qt; | |
1610 | Lisp_Object val, *args2; | |
a4a37e65 | 1611 | struct gcpro gcpro1, gcpro2; |
67918941 | 1612 | |
d5d4ae71 KH |
1613 | val = Vcoding_system_for_read; |
1614 | if (NILP (val)) | |
67918941 RS |
1615 | { |
1616 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1617 | args2[0] = Qstart_process; | |
1618 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1619 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1620 | if (!NILP (program)) |
1621 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1622 | UNGCPRO; |
1623 | if (CONSP (coding_systems)) | |
70949dac | 1624 | val = XCAR (coding_systems); |
67918941 | 1625 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1626 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1627 | } |
1628 | XPROCESS (proc)->decode_coding_system = val; | |
1629 | ||
d5d4ae71 KH |
1630 | val = Vcoding_system_for_write; |
1631 | if (NILP (val)) | |
67918941 RS |
1632 | { |
1633 | if (EQ (coding_systems, Qt)) | |
1634 | { | |
1635 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1636 | args2[0] = Qstart_process; | |
1637 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1638 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1639 | if (!NILP (program)) |
1640 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1641 | UNGCPRO; |
1642 | } | |
1643 | if (CONSP (coding_systems)) | |
70949dac | 1644 | val = XCDR (coding_systems); |
67918941 | 1645 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1646 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1647 | } |
1648 | XPROCESS (proc)->encode_coding_system = val; | |
fcaf8878 KH |
1649 | /* Note: At this momemnt, the above coding system may leave |
1650 | text-conversion or eol-conversion unspecified. They will be | |
1651 | decided after we read output from the process and decode it by | |
1652 | some coding system, or just before we actually send a text to | |
1653 | the process. */ | |
67918941 | 1654 | } |
0fa1789e | 1655 | |
a4a37e65 | 1656 | |
cbe81f1d | 1657 | XPROCESS (proc)->decoding_buf = empty_unibyte_string; |
850d0752 | 1658 | XPROCESS (proc)->decoding_carryover = 0; |
cbe81f1d | 1659 | XPROCESS (proc)->encoding_buf = empty_unibyte_string; |
ed30cf85 | 1660 | |
850d0752 NR |
1661 | XPROCESS (proc)->inherit_coding_system_flag |
1662 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1663 | |
850d0752 NR |
1664 | if (!NILP (program)) |
1665 | { | |
1666 | /* If program file name is not absolute, search our path for it. | |
1667 | Put the name we will really use in TEM. */ | |
1668 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1669 | && !(SCHARS (program) > 1 | |
1670 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1671 | { | |
1672 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1673 | ||
1674 | tem = Qnil; | |
1675 | GCPRO4 (name, program, buffer, current_dir); | |
1676 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1677 | UNGCPRO; | |
1678 | if (NILP (tem)) | |
1679 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1680 | tem = Fexpand_file_name (tem, Qnil); | |
1681 | } | |
1682 | else | |
1683 | { | |
1684 | if (!NILP (Ffile_directory_p (program))) | |
1685 | error ("Specified program for new process is a directory"); | |
1686 | tem = program; | |
1687 | } | |
ed30cf85 | 1688 | |
850d0752 NR |
1689 | /* If program file name starts with /: for quoting a magic name, |
1690 | discard that. */ | |
1691 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1692 | && SREF (tem, 1) == ':') | |
1693 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1694 | |
77bf07e1 | 1695 | { |
fcaf8878 | 1696 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1697 | struct gcpro gcpro1; |
1698 | GCPRO1 (tem); | |
a4a37e65 | 1699 | |
850d0752 NR |
1700 | /* Encode the file name and put it in NEW_ARGV. |
1701 | That's where the child will use it to execute the program. */ | |
1702 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1703 | |
850d0752 NR |
1704 | /* Here we encode arguments by the coding system used for sending |
1705 | data to the process. We don't support using different coding | |
1706 | systems for encoding arguments and for encoding data sent to the | |
1707 | process. */ | |
77bf07e1 | 1708 | |
850d0752 NR |
1709 | for (i = 3; i < nargs; i++) |
1710 | { | |
1711 | tem = Fcons (args[i], tem); | |
1712 | CHECK_STRING (XCAR (tem)); | |
1713 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1714 | { |
1715 | if (NILP (arg_encoding)) | |
1716 | arg_encoding = (complement_process_encoding_system | |
1717 | (XPROCESS (proc)->encode_coding_system)); | |
1718 | XSETCAR (tem, | |
1719 | code_convert_string_norecord | |
1720 | (XCAR (tem), arg_encoding, 1)); | |
1721 | } | |
850d0752 | 1722 | } |
a4a37e65 | 1723 | |
850d0752 NR |
1724 | UNGCPRO; |
1725 | } | |
0fa1789e | 1726 | |
850d0752 NR |
1727 | /* Now that everything is encoded we can collect the strings into |
1728 | NEW_ARGV. */ | |
1729 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1730 | new_argv[nargs - 2] = 0; | |
52a1b894 | 1731 | |
850d0752 NR |
1732 | for (i = nargs - 3; i >= 0; i--) |
1733 | { | |
1734 | new_argv[i] = SDATA (XCAR (tem)); | |
1735 | tem = XCDR (tem); | |
1736 | } | |
1737 | ||
1738 | create_process (proc, (char **) new_argv, current_dir); | |
1739 | } | |
1740 | else | |
1741 | create_pty (proc); | |
d0d6b7c5 | 1742 | |
b0310da4 | 1743 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1744 | } |
1745 | ||
b0310da4 | 1746 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1747 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1748 | an error and the process wasn't started successfully, so we should |
1749 | remove it from the process list. */ | |
1750 | static Lisp_Object | |
d3da34e0 | 1751 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1752 | { |
bcd69aea | 1753 | if (!PROCESSP (proc)) |
b0310da4 JB |
1754 | abort (); |
1755 | ||
1756 | /* Was PROC started successfully? */ | |
850d0752 | 1757 | if (XPROCESS (proc)->pid == -1) |
b0310da4 JB |
1758 | remove_process (proc); |
1759 | ||
1760 | return Qnil; | |
1761 | } | |
1762 | ||
ff6daed3 | 1763 | static void |
d3da34e0 | 1764 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1765 | { |
30904ab7 | 1766 | /* Nothing to do. */ |
d0d6b7c5 JB |
1767 | } |
1768 | ||
30904ab7 | 1769 | |
6b53bb85 | 1770 | void |
d3da34e0 | 1771 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1772 | { |
29ed4d51 CY |
1773 | int inchannel, outchannel; |
1774 | pid_t pid; | |
d0d6b7c5 | 1775 | int sv[2]; |
2c4df143 YM |
1776 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1777 | int wait_child_setup[2]; | |
1778 | #endif | |
0dc70c33 KH |
1779 | sigset_t procmask; |
1780 | sigset_t blocked; | |
1781 | struct sigaction sigint_action; | |
1782 | struct sigaction sigquit_action; | |
c0ad4ea5 | 1783 | struct sigaction sigpipe_action; |
0dc70c33 KH |
1784 | #ifdef AIX |
1785 | struct sigaction sighup_action; | |
1786 | #endif | |
ecd1f654 KH |
1787 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1788 | volatile int forkin, forkout; | |
1789 | volatile int pty_flag = 0; | |
3ec68006 | 1790 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1791 | extern char **environ; |
3ec68006 | 1792 | #endif |
d0d6b7c5 | 1793 | |
d0d6b7c5 JB |
1794 | inchannel = outchannel = -1; |
1795 | ||
1796 | #ifdef HAVE_PTYS | |
fe45da4e | 1797 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1798 | outchannel = inchannel = allocate_pty (); |
1799 | ||
d0d6b7c5 JB |
1800 | if (inchannel >= 0) |
1801 | { | |
2af70a0c RS |
1802 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1803 | /* On most USG systems it does not work to open the pty's tty here, | |
1804 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1805 | #ifdef O_NOCTTY |
1806 | /* Don't let this terminal become our controlling terminal | |
1807 | (in case we don't have one). */ | |
68c45bf0 | 1808 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1809 | #else |
68c45bf0 | 1810 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1811 | #endif |
1812 | if (forkin < 0) | |
1813 | report_file_error ("Opening pty", Qnil); | |
1814 | #else | |
1815 | forkin = forkout = -1; | |
2af70a0c | 1816 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1817 | pty_flag = 1; |
1818 | } | |
1819 | else | |
1820 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1821 | { |
fc14013c KH |
1822 | int tem; |
1823 | tem = pipe (sv); | |
1824 | if (tem < 0) | |
1825 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1826 | inchannel = sv[0]; |
1827 | forkout = sv[1]; | |
fc14013c KH |
1828 | tem = pipe (sv); |
1829 | if (tem < 0) | |
1830 | { | |
68c45bf0 PE |
1831 | emacs_close (inchannel); |
1832 | emacs_close (forkout); | |
fc14013c KH |
1833 | report_file_error ("Creating pipe", Qnil); |
1834 | } | |
d0d6b7c5 JB |
1835 | outchannel = sv[1]; |
1836 | forkin = sv[0]; | |
1837 | } | |
d0d6b7c5 | 1838 | |
2c4df143 YM |
1839 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1840 | { | |
1841 | int tem; | |
1842 | ||
1843 | tem = pipe (wait_child_setup); | |
1844 | if (tem < 0) | |
1845 | report_file_error ("Creating pipe", Qnil); | |
1846 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1847 | if (tem >= 0) | |
1848 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1849 | if (tem < 0) | |
1850 | { | |
1851 | emacs_close (wait_child_setup[0]); | |
1852 | emacs_close (wait_child_setup[1]); | |
1853 | report_file_error ("Setting file descriptor flags", Qnil); | |
1854 | } | |
1855 | } | |
1856 | #endif | |
1857 | ||
d0d6b7c5 JB |
1858 | #ifdef O_NONBLOCK |
1859 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1860 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1861 | #else |
1862 | #ifdef O_NDELAY | |
1863 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1864 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1865 | #endif |
1866 | #endif | |
1867 | ||
1868 | /* Record this as an active process, with its channels. | |
1869 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1870 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1871 | XPROCESS (process)->infd = inchannel; |
1872 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1873 | |
1874 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1875 | It was only used for getting the foreground tty process, so now | |
1876 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1877 | more portable (see USG_SUBTTY_WORKS above). */ | |
1878 | ||
60f0fb11 | 1879 | XPROCESS (process)->pty_flag = pty_flag; |
d0d6b7c5 | 1880 | XPROCESS (process)->status = Qrun; |
03f04413 | 1881 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1882 | |
1883 | /* Delay interrupts until we have a chance to store | |
1884 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1885 | sigemptyset (&blocked); |
1886 | #ifdef SIGCHLD | |
1887 | sigaddset (&blocked, SIGCHLD); | |
1888 | #endif | |
351e611f | 1889 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1890 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1891 | this sets the parent's signal handlers as well as the child's. | |
1892 | So delay all interrupts whose handlers the child might munge, | |
1893 | and record the current handlers so they can be restored later. */ | |
1894 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1895 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
c0ad4ea5 | 1896 | sigaddset (&blocked, SIGPIPE); sigaction (SIGPIPE, 0, &sigpipe_action); |
0dc70c33 KH |
1897 | #ifdef AIX |
1898 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1899 | #endif | |
351e611f | 1900 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 | 1901 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
d0d6b7c5 | 1902 | |
3081bf8d | 1903 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1904 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1905 | if (inchannel > max_process_desc) |
1906 | max_process_desc = inchannel; | |
1907 | ||
d0d6b7c5 JB |
1908 | /* Until we store the proper pid, enable sigchld_handler |
1909 | to recognize an unknown pid as standing for this process. | |
1910 | It is very important not to let this `marker' value stay | |
1911 | in the table after this function has returned; if it does | |
1912 | it might cause call-process to hang and subsequent asynchronous | |
1913 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1914 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1915 | |
ececcbec | 1916 | BLOCK_INPUT; |
177c0ea7 | 1917 | |
d0d6b7c5 JB |
1918 | { |
1919 | /* child_setup must clobber environ on systems with true vfork. | |
1920 | Protect it from permanent change. */ | |
1921 | char **save_environ = environ; | |
1922 | ||
14dc6093 | 1923 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1924 | |
e98d950b | 1925 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1926 | pid = vfork (); |
1927 | if (pid == 0) | |
e98d950b | 1928 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1929 | { |
1930 | int xforkin = forkin; | |
1931 | int xforkout = forkout; | |
1932 | ||
1933 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1934 | but fails to handle all the cases. */ | |
1935 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1936 | sigsetmask (SIGEMPTYMASK); | |
1937 | #endif | |
1938 | ||
1939 | /* Make the pty be the controlling terminal of the process. */ | |
1940 | #ifdef HAVE_PTYS | |
1941 | /* First, disconnect its current controlling terminal. */ | |
1942 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1943 | /* We tried doing setsid only if pty_flag, but it caused |
1944 | process_set_signal to fail on SGI when using a pipe. */ | |
1945 | setsid (); | |
ce4c9c90 | 1946 | /* Make the pty's terminal the controlling terminal. */ |
ce8f5a9a | 1947 | if (pty_flag && xforkin >= 0) |
39e9ebcd | 1948 | { |
39e9ebcd RS |
1949 | #ifdef TIOCSCTTY |
1950 | /* We ignore the return value | |
1951 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1952 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1953 | #endif |
39e9ebcd | 1954 | } |
d0d6b7c5 | 1955 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1956 | #ifdef USG |
000ab717 | 1957 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1958 | afterwards. Otherwise, we lose our controlling tty which |
1959 | is set when we open the pty. */ | |
1960 | setpgrp (); | |
1961 | #endif /* USG */ | |
1962 | #endif /* not HAVE_SETSID */ | |
a7ebc409 | 1963 | #if defined (LDISC1) |
9bcf8ec6 KH |
1964 | if (pty_flag && xforkin >= 0) |
1965 | { | |
1966 | struct termios t; | |
1967 | tcgetattr (xforkin, &t); | |
1968 | t.c_lflag = LDISC1; | |
1969 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1970 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1971 | } |
1972 | #else | |
aafadd9f | 1973 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1974 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1975 | { |
1976 | /* Use new line discipline. */ | |
1977 | int ldisc = NTTYDISC; | |
4458f555 | 1978 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1979 | } |
000ab717 | 1980 | #endif |
9bcf8ec6 | 1981 | #endif |
177c0ea7 | 1982 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1983 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1984 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1985 | if (pty_flag) | |
1986 | { | |
177c0ea7 | 1987 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1988 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1989 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
ce8f5a9a AS |
1990 | if (j >= 0) |
1991 | { | |
1992 | ioctl (j, TIOCNOTTY, 0); | |
1993 | emacs_close (j); | |
1994 | } | |
5a570e37 | 1995 | #ifndef USG |
d0d6b7c5 JB |
1996 | /* In order to get a controlling terminal on some versions |
1997 | of BSD, it is necessary to put the process in pgrp 0 | |
1998 | before it opens the terminal. */ | |
99c1aeca | 1999 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
2000 | setpgid (0, 0); |
2001 | #else | |
d0d6b7c5 | 2002 | setpgrp (0, 0); |
3ea1d291 | 2003 | #endif |
d0d6b7c5 JB |
2004 | #endif |
2005 | } | |
2006 | #endif /* TIOCNOTTY */ | |
2007 | ||
e39a993c | 2008 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 2009 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
2010 | conditional on TIOCSPGRP, |
2011 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
2012 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
2013 | that system does seem to need this code, even though | |
2014 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
2015 | /* Now close the pty (if we had it open) and reopen it. |
2016 | This makes the pty the controlling terminal of the subprocess. */ | |
2017 | if (pty_flag) | |
2018 | { | |
99e3d726 | 2019 | |
68c45bf0 PE |
2020 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2021 | would work? */ | |
d0d6b7c5 | 2022 | if (xforkin >= 0) |
68c45bf0 PE |
2023 | emacs_close (xforkin); |
2024 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2025 | |
4aa54ba8 RS |
2026 | if (xforkin < 0) |
2027 | { | |
68c45bf0 PE |
2028 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2029 | emacs_write (1, pty_name, strlen (pty_name)); | |
2030 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2031 | _exit (1); |
2032 | } | |
2033 | ||
d0d6b7c5 | 2034 | } |
e39a993c | 2035 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 2036 | |
d0d6b7c5 | 2037 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2038 | if (pty_flag) |
2039 | { | |
2040 | SETUP_SLAVE_PTY; | |
2041 | } | |
d0d6b7c5 JB |
2042 | #endif /* SETUP_SLAVE_PTY */ |
2043 | #ifdef AIX | |
2044 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2045 | Now reenable it in the child, so it will die when we want it to. */ | |
2046 | if (pty_flag) | |
2047 | signal (SIGHUP, SIG_DFL); | |
2048 | #endif | |
2049 | #endif /* HAVE_PTYS */ | |
2050 | ||
0dc70c33 KH |
2051 | signal (SIGINT, SIG_DFL); |
2052 | signal (SIGQUIT, SIG_DFL); | |
2f9a22e2 | 2053 | /* GConf causes us to ignore SIGPIPE, make sure it is restored |
c0ad4ea5 AS |
2054 | in the child. */ |
2055 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 KH |
2056 | |
2057 | /* Stop blocking signals in the child. */ | |
0dc70c33 | 2058 | sigprocmask (SIG_SETMASK, &procmask, 0); |
5e7e1da2 | 2059 | |
ab01d0a8 RS |
2060 | if (pty_flag) |
2061 | child_setup_tty (xforkout); | |
e98d950b RS |
2062 | #ifdef WINDOWSNT |
2063 | pid = child_setup (xforkin, xforkout, xforkout, | |
2064 | new_argv, 1, current_dir); | |
177c0ea7 | 2065 | #else /* not WINDOWSNT */ |
2c4df143 YM |
2066 | #ifdef FD_CLOEXEC |
2067 | emacs_close (wait_child_setup[0]); | |
2068 | #endif | |
d0d6b7c5 | 2069 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2070 | new_argv, 1, current_dir); |
e98d950b | 2071 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2072 | } |
2073 | environ = save_environ; | |
2074 | } | |
2075 | ||
ececcbec RS |
2076 | UNBLOCK_INPUT; |
2077 | ||
4a127b3b | 2078 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2079 | if (pid < 0) |
6311cf58 RS |
2080 | { |
2081 | if (forkin >= 0) | |
68c45bf0 | 2082 | emacs_close (forkin); |
6311cf58 | 2083 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2084 | emacs_close (forkout); |
6311cf58 | 2085 | } |
4a127b3b KH |
2086 | else |
2087 | { | |
2088 | /* vfork succeeded. */ | |
6bfd98e7 | 2089 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 2090 | |
e98d950b | 2091 | #ifdef WINDOWSNT |
4a127b3b | 2092 | register_child (pid, inchannel); |
e98d950b RS |
2093 | #endif /* WINDOWSNT */ |
2094 | ||
4a127b3b KH |
2095 | /* If the subfork execv fails, and it exits, |
2096 | this close hangs. I don't know why. | |
2097 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2098 | { |
2099 | struct atimer *timer; | |
2100 | EMACS_TIME offset; | |
177c0ea7 | 2101 | |
30904ab7 GM |
2102 | stop_polling (); |
2103 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2104 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2105 | |
30904ab7 GM |
2106 | if (forkin >= 0) |
2107 | emacs_close (forkin); | |
2108 | ||
2109 | cancel_atimer (timer); | |
2110 | start_polling (); | |
2111 | } | |
177c0ea7 | 2112 | |
4a127b3b | 2113 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2114 | emacs_close (forkout); |
d0d6b7c5 | 2115 | |
875e6b94 | 2116 | #ifdef HAVE_PTYS |
4a127b3b KH |
2117 | if (pty_flag) |
2118 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2119 | else | |
875e6b94 | 2120 | #endif |
4a127b3b | 2121 | XPROCESS (process)->tty_name = Qnil; |
2c4df143 YM |
2122 | |
2123 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
2124 | /* Wait for child_setup to complete in case that vfork is | |
2125 | actually defined as fork. The descriptor wait_child_setup[1] | |
2126 | of a pipe is closed at the child side either by close-on-exec | |
2127 | on successful execvp or the _exit call in child_setup. */ | |
2128 | { | |
2129 | char dummy; | |
2130 | ||
2131 | emacs_close (wait_child_setup[1]); | |
2132 | emacs_read (wait_child_setup[0], &dummy, 1); | |
2133 | emacs_close (wait_child_setup[0]); | |
2134 | } | |
2135 | #endif | |
4a127b3b | 2136 | } |
3b9a3dfa | 2137 | |
4a127b3b KH |
2138 | /* Restore the signal state whether vfork succeeded or not. |
2139 | (We will signal an error, below, if it failed.) */ | |
351e611f | 2140 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2141 | /* Restore the parent's signal handlers. */ |
2142 | sigaction (SIGINT, &sigint_action, 0); | |
2143 | sigaction (SIGQUIT, &sigquit_action, 0); | |
c0ad4ea5 | 2144 | sigaction (SIGPIPE, &sigpipe_action, 0); |
0dc70c33 KH |
2145 | #ifdef AIX |
2146 | sigaction (SIGHUP, &sighup_action, 0); | |
2147 | #endif | |
351e611f | 2148 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2149 | /* Stop blocking signals in the parent. */ |
2150 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
4a127b3b KH |
2151 | |
2152 | /* Now generate the error if vfork failed. */ | |
2153 | if (pid < 0) | |
2154 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 2155 | } |
d0d6b7c5 | 2156 | |
850d0752 | 2157 | void |
d3da34e0 | 2158 | create_pty (Lisp_Object process) |
850d0752 NR |
2159 | { |
2160 | int inchannel, outchannel; | |
2161 | ||
2162 | /* Use volatile to protect variables from being clobbered by longjmp. */ | |
2163 | volatile int forkin, forkout; | |
2164 | volatile int pty_flag = 0; | |
2165 | ||
2166 | inchannel = outchannel = -1; | |
2167 | ||
2168 | #ifdef HAVE_PTYS | |
2169 | if (!NILP (Vprocess_connection_type)) | |
2170 | outchannel = inchannel = allocate_pty (); | |
2171 | ||
2172 | if (inchannel >= 0) | |
2173 | { | |
2174 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
2175 | /* On most USG systems it does not work to open the pty's tty here, | |
2176 | then close it and reopen it in the child. */ | |
2177 | #ifdef O_NOCTTY | |
2178 | /* Don't let this terminal become our controlling terminal | |
2179 | (in case we don't have one). */ | |
2180 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); | |
2181 | #else | |
2182 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); | |
2183 | #endif | |
2184 | if (forkin < 0) | |
2185 | report_file_error ("Opening pty", Qnil); | |
019d2c4c | 2186 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
2187 | /* In the case that vfork is defined as fork, the parent process |
2188 | (Emacs) may send some data before the child process completes | |
2189 | tty options setup. So we setup tty before forking. */ | |
2190 | child_setup_tty (forkout); | |
019d2c4c | 2191 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
2192 | #else |
2193 | forkin = forkout = -1; | |
2194 | #endif /* not USG, or USG_SUBTTY_WORKS */ | |
2195 | pty_flag = 1; | |
2196 | } | |
2197 | #endif /* HAVE_PTYS */ | |
2198 | ||
2199 | #ifdef O_NONBLOCK | |
2200 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
2201 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
2202 | #else | |
2203 | #ifdef O_NDELAY | |
2204 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
2205 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
2206 | #endif | |
2207 | #endif | |
2208 | ||
2209 | /* Record this as an active process, with its channels. | |
2210 | As a result, child_setup will close Emacs's side of the pipes. */ | |
2211 | chan_process[inchannel] = process; | |
2212 | XPROCESS (process)->infd = inchannel; | |
2213 | XPROCESS (process)->outfd = outchannel; | |
2214 | ||
2215 | /* Previously we recorded the tty descriptor used in the subprocess. | |
2216 | It was only used for getting the foreground tty process, so now | |
2217 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
2218 | more portable (see USG_SUBTTY_WORKS above). */ | |
2219 | ||
2220 | XPROCESS (process)->pty_flag = pty_flag; | |
2221 | XPROCESS (process)->status = Qrun; | |
2222 | setup_process_coding_systems (process); | |
2223 | ||
2224 | FD_SET (inchannel, &input_wait_mask); | |
2225 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
2226 | if (inchannel > max_process_desc) | |
2227 | max_process_desc = inchannel; | |
2228 | ||
2229 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
2230 | #ifdef HAVE_PTYS |
2231 | if (pty_flag) | |
2232 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2233 | else | |
2234 | #endif | |
2235 | XPROCESS (process)->tty_name = Qnil; | |
850d0752 NR |
2236 | } |
2237 | ||
e690ca94 | 2238 | \f |
e690ca94 KS |
2239 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2240 | The address family of sa is not included in the result. */ | |
2241 | ||
2242 | static Lisp_Object | |
d3da34e0 | 2243 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
2244 | { |
2245 | Lisp_Object address; | |
2246 | int i; | |
2247 | unsigned char *cp; | |
2248 | register struct Lisp_Vector *p; | |
2249 | ||
63136da6 AS |
2250 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2251 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2252 | a zero length name. */ | |
89887d67 | 2253 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2254 | return empty_unibyte_string; |
63136da6 | 2255 | |
e690ca94 KS |
2256 | switch (sa->sa_family) |
2257 | { | |
2258 | case AF_INET: | |
2259 | { | |
2260 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2261 | len = sizeof (sin->sin_addr) + 1; | |
2262 | address = Fmake_vector (make_number (len), Qnil); | |
2263 | p = XVECTOR (address); | |
2264 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2265 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2266 | break; |
2267 | } | |
e1652a86 KS |
2268 | #ifdef AF_INET6 |
2269 | case AF_INET6: | |
2270 | { | |
2271 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2272 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2273 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2274 | address = Fmake_vector (make_number (len), Qnil); | |
2275 | p = XVECTOR (address); | |
2276 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2277 | for (i = 0; i < len; i++) | |
2278 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2279 | return address; | |
2280 | } | |
2281 | #endif | |
e690ca94 KS |
2282 | #ifdef HAVE_LOCAL_SOCKETS |
2283 | case AF_LOCAL: | |
2284 | { | |
fb23673a EZ |
2285 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2286 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2287 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2288 | break; |
fb23673a | 2289 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2290 | } |
2291 | #endif | |
2292 | default: | |
89887d67 | 2293 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2294 | address = Fcons (make_number (sa->sa_family), |
2295 | Fmake_vector (make_number (len), Qnil)); | |
2296 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2297 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2298 | break; |
2299 | } | |
2300 | ||
2301 | i = 0; | |
2302 | while (i < len) | |
2303 | p->contents[i++] = make_number (*cp++); | |
2304 | ||
2305 | return address; | |
2306 | } | |
2307 | ||
2308 | ||
2309 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2310 | ||
2311 | static int | |
d3da34e0 | 2312 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2313 | { |
2314 | register struct Lisp_Vector *p; | |
2315 | ||
2316 | if (VECTORP (address)) | |
2317 | { | |
2318 | p = XVECTOR (address); | |
2319 | if (p->size == 5) | |
2320 | { | |
2321 | *familyp = AF_INET; | |
2322 | return sizeof (struct sockaddr_in); | |
2323 | } | |
e1652a86 KS |
2324 | #ifdef AF_INET6 |
2325 | else if (p->size == 9) | |
2326 | { | |
2327 | *familyp = AF_INET6; | |
2328 | return sizeof (struct sockaddr_in6); | |
2329 | } | |
2330 | #endif | |
e690ca94 KS |
2331 | } |
2332 | #ifdef HAVE_LOCAL_SOCKETS | |
2333 | else if (STRINGP (address)) | |
2334 | { | |
2335 | *familyp = AF_LOCAL; | |
2336 | return sizeof (struct sockaddr_un); | |
2337 | } | |
2338 | #endif | |
2339 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2340 | { | |
2341 | struct sockaddr *sa; | |
2342 | *familyp = XINT (XCAR (address)); | |
2343 | p = XVECTOR (XCDR (address)); | |
2344 | return p->size + sizeof (sa->sa_family); | |
2345 | } | |
2346 | return 0; | |
2347 | } | |
2348 | ||
2349 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2350 | |
2351 | The address format has been basically validated by | |
2352 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2353 | it could have come from user data. So if FAMILY is not valid, | |
2354 | we return after zeroing *SA. */ | |
e690ca94 KS |
2355 | |
2356 | static void | |
d3da34e0 | 2357 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2358 | { |
2359 | register struct Lisp_Vector *p; | |
34967d0f | 2360 | register unsigned char *cp = NULL; |
e690ca94 KS |
2361 | register int i; |
2362 | ||
72af86bd | 2363 | memset (sa, 0, len); |
e690ca94 KS |
2364 | |
2365 | if (VECTORP (address)) | |
2366 | { | |
2367 | p = XVECTOR (address); | |
2368 | if (family == AF_INET) | |
2369 | { | |
2370 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2371 | len = sizeof (sin->sin_addr) + 1; | |
2372 | i = XINT (p->contents[--len]); | |
2373 | sin->sin_port = htons (i); | |
2374 | cp = (unsigned char *)&sin->sin_addr; | |
9d1a8e5d | 2375 | sa->sa_family = family; |
e690ca94 | 2376 | } |
e1652a86 KS |
2377 | #ifdef AF_INET6 |
2378 | else if (family == AF_INET6) | |
2379 | { | |
2380 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2381 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2382 | len = sizeof (sin6->sin6_addr) + 1; | |
2383 | i = XINT (p->contents[--len]); | |
2384 | sin6->sin6_port = htons (i); | |
2385 | for (i = 0; i < len; i++) | |
2386 | if (INTEGERP (p->contents[i])) | |
2387 | { | |
2388 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2389 | ip6[i] = ntohs (j); | |
2390 | } | |
9d1a8e5d | 2391 | sa->sa_family = family; |
0eb7675e | 2392 | return; |
e1652a86 KS |
2393 | } |
2394 | #endif | |
0eb7675e AS |
2395 | else |
2396 | return; | |
e690ca94 KS |
2397 | } |
2398 | else if (STRINGP (address)) | |
2399 | { | |
2400 | #ifdef HAVE_LOCAL_SOCKETS | |
2401 | if (family == AF_LOCAL) | |
2402 | { | |
fb23673a | 2403 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2404 | cp = SDATA (address); |
fb23673a EZ |
2405 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2406 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2407 | sa->sa_family = family; |
e690ca94 KS |
2408 | } |
2409 | #endif | |
2410 | return; | |
2411 | } | |
2412 | else | |
2413 | { | |
2414 | p = XVECTOR (XCDR (address)); | |
2415 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2416 | } | |
2417 | ||
2418 | for (i = 0; i < len; i++) | |
2419 | if (INTEGERP (p->contents[i])) | |
2420 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2421 | } | |
2422 | ||
2423 | #ifdef DATAGRAM_SOCKETS | |
2424 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2425 | 1, 1, 0, | |
2426 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2427 | (Lisp_Object process) |
e690ca94 KS |
2428 | { |
2429 | int channel; | |
2430 | ||
2431 | CHECK_PROCESS (process); | |
2432 | ||
2433 | if (!DATAGRAM_CONN_P (process)) | |
2434 | return Qnil; | |
2435 | ||
60f0fb11 | 2436 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2437 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2438 | datagram_address[channel].len); | |
2439 | } | |
2440 | ||
2441 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2442 | 2, 2, 0, | |
2443 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2444 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2445 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2446 | { |
2447 | int channel; | |
2448 | int family, len; | |
2449 | ||
2450 | CHECK_PROCESS (process); | |
2451 | ||
2452 | if (!DATAGRAM_CONN_P (process)) | |
2453 | return Qnil; | |
2454 | ||
60f0fb11 | 2455 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2456 | |
2457 | len = get_lisp_to_sockaddr_size (address, &family); | |
2458 | if (datagram_address[channel].len != len) | |
2459 | return Qnil; | |
2460 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2461 | return address; | |
2462 | } | |
2463 | #endif | |
2464 | \f | |
2465 | ||
5e2327cf | 2466 | static const struct socket_options { |
e690ca94 | 2467 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2468 | name without SO_ prefix. */ |
fce70521 | 2469 | const char *name; |
e690ca94 KS |
2470 | /* Option level SOL_... */ |
2471 | int optlevel; | |
2472 | /* Option number SO_... */ | |
2473 | int optnum; | |
6b61353c KH |
2474 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2475 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2476 | } socket_options[] = |
2477 | { | |
2478 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2479 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2480 | #endif |
2481 | #ifdef SO_BROADCAST | |
6b61353c | 2482 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2483 | #endif |
2484 | #ifdef SO_DONTROUTE | |
6b61353c | 2485 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2486 | #endif |
2487 | #ifdef SO_KEEPALIVE | |
6b61353c | 2488 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2489 | #endif |
2490 | #ifdef SO_LINGER | |
6b61353c | 2491 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2492 | #endif |
2493 | #ifdef SO_OOBINLINE | |
6b61353c | 2494 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2495 | #endif |
2496 | #ifdef SO_PRIORITY | |
6b61353c | 2497 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2498 | #endif |
2499 | #ifdef SO_REUSEADDR | |
6b61353c | 2500 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2501 | #endif |
6b61353c | 2502 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2503 | }; |
2504 | ||
6b61353c | 2505 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2506 | |
6b61353c KH |
2507 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2508 | Signals an error if setting a known option fails. | |
2509 | */ | |
e690ca94 KS |
2510 | |
2511 | static int | |
d3da34e0 | 2512 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2513 | { |
6b61353c | 2514 | char *name; |
5e2327cf | 2515 | const struct socket_options *sopt; |
6b61353c | 2516 | int ret = 0; |
e690ca94 | 2517 | |
6b61353c | 2518 | CHECK_SYMBOL (opt); |
e690ca94 | 2519 | |
51b59d79 | 2520 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2521 | for (sopt = socket_options; sopt->name; sopt++) |
2522 | if (strcmp (name, sopt->name) == 0) | |
2523 | break; | |
e690ca94 | 2524 | |
6b61353c KH |
2525 | switch (sopt->opttype) |
2526 | { | |
2527 | case SOPT_BOOL: | |
2528 | { | |
2529 | int optval; | |
2530 | optval = NILP (val) ? 0 : 1; | |
2531 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2532 | &optval, sizeof (optval)); | |
2533 | break; | |
2534 | } | |
e690ca94 | 2535 | |
6b61353c KH |
2536 | case SOPT_INT: |
2537 | { | |
2538 | int optval; | |
2539 | if (INTEGERP (val)) | |
2540 | optval = XINT (val); | |
2541 | else | |
2542 | error ("Bad option value for %s", name); | |
2543 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2544 | &optval, sizeof (optval)); | |
2545 | break; | |
2546 | } | |
e690ca94 | 2547 | |
6b61353c KH |
2548 | #ifdef SO_BINDTODEVICE |
2549 | case SOPT_IFNAME: | |
2550 | { | |
2551 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2552 | |
6b61353c KH |
2553 | /* This is broken, at least in the Linux 2.4 kernel. |
2554 | To unbind, the arg must be a zero integer, not the empty string. | |
2555 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2556 | memset (devname, 0, sizeof devname); |
6b61353c | 2557 | if (STRINGP (val)) |
e690ca94 | 2558 | { |
51b59d79 | 2559 | char *arg = SSDATA (val); |
6b61353c | 2560 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2561 | memcpy (devname, arg, len); |
e690ca94 | 2562 | } |
6b61353c KH |
2563 | else if (!NILP (val)) |
2564 | error ("Bad option value for %s", name); | |
2565 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2566 | devname, IFNAMSIZ); | |
2567 | break; | |
2568 | } | |
2569 | #endif | |
e690ca94 | 2570 | |
177c0ea7 | 2571 | #ifdef SO_LINGER |
6b61353c KH |
2572 | case SOPT_LINGER: |
2573 | { | |
2574 | struct linger linger; | |
e690ca94 | 2575 | |
6b61353c KH |
2576 | linger.l_onoff = 1; |
2577 | linger.l_linger = 0; | |
2578 | if (INTEGERP (val)) | |
2579 | linger.l_linger = XINT (val); | |
2580 | else | |
2581 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2582 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2583 | &linger, sizeof (linger)); | |
2584 | break; | |
2585 | } | |
e690ca94 | 2586 | #endif |
6b61353c KH |
2587 | |
2588 | default: | |
2589 | return 0; | |
e690ca94 | 2590 | } |
6b61353c KH |
2591 | |
2592 | if (ret < 0) | |
2593 | report_file_error ("Cannot set network option", | |
2594 | Fcons (opt, Fcons (val, Qnil))); | |
2595 | return (1 << sopt->optbit); | |
e690ca94 KS |
2596 | } |
2597 | ||
6b61353c KH |
2598 | |
2599 | DEFUN ("set-network-process-option", | |
2600 | Fset_network_process_option, Sset_network_process_option, | |
2601 | 3, 4, 0, | |
2602 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2603 | See `make-network-process' for a list of options and values. | |
2604 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2605 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2606 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2607 | { |
6b61353c KH |
2608 | int s; |
2609 | struct Lisp_Process *p; | |
e690ca94 | 2610 | |
e690ca94 | 2611 | CHECK_PROCESS (process); |
6b61353c KH |
2612 | p = XPROCESS (process); |
2613 | if (!NETCONN1_P (p)) | |
2614 | error ("Process is not a network process"); | |
2615 | ||
60f0fb11 | 2616 | s = p->infd; |
6b61353c KH |
2617 | if (s < 0) |
2618 | error ("Process is not running"); | |
2619 | ||
2620 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2621 | { |
6b61353c KH |
2622 | p->childp = Fplist_put (p->childp, option, value); |
2623 | return Qt; | |
e690ca94 | 2624 | } |
6b61353c KH |
2625 | |
2626 | if (NILP (no_error)) | |
2627 | error ("Unknown or unsupported option"); | |
2628 | ||
2629 | return Qnil; | |
e690ca94 | 2630 | } |
6b61353c | 2631 | |
e690ca94 | 2632 | \f |
d888760c GM |
2633 | DEFUN ("serial-process-configure", |
2634 | Fserial_process_configure, | |
2635 | Sserial_process_configure, | |
2636 | 0, MANY, 0, | |
2637 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2638 | ||
2639 | Arguments are specified as keyword/argument pairs. Attributes that | |
2640 | are not given are re-initialized from the process's current | |
2641 | configuration (available via the function `process-contact') or set to | |
2642 | reasonable default values. The following arguments are defined: | |
2643 | ||
2644 | :process PROCESS | |
2645 | :name NAME | |
2646 | :buffer BUFFER | |
2647 | :port PORT | |
2648 | -- Any of these arguments can be given to identify the process that is | |
2649 | to be configured. If none of these arguments is given, the current | |
2650 | buffer's process is used. | |
2651 | ||
2652 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2653 | second, also called baud rate. Any value can be given for SPEED, but | |
2654 | most serial ports work only at a few defined values between 1200 and | |
2655 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2656 | serial port is not configured any further, i.e., all other arguments | |
2657 | are ignored. This may be useful for special serial ports such as | |
2658 | Bluetooth-to-serial converters which can only be configured through AT | |
2659 | commands. A value of nil for SPEED can be used only when passed | |
2660 | through `make-serial-process' or `serial-term'. | |
2661 | ||
2662 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2663 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2664 | ||
2665 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2666 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2667 | PARITY is not given, no parity is used. | |
2668 | ||
2669 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2670 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2671 | is not given or nil, 1 stopbit is used. | |
2672 | ||
2673 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2674 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2675 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2676 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2677 | flowcontrol is used. | |
2678 | ||
2679 | `serial-process-configure' is called by `make-serial-process' for the | |
2680 | initial configuration of the serial port. | |
2681 | ||
2682 | Examples: | |
2683 | ||
2684 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2685 | ||
2686 | \(serial-process-configure | |
2687 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2688 | ||
2689 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2690 | ||
2691 | usage: (serial-process-configure &rest ARGS) */) | |
5842a27b | 2692 | (int nargs, Lisp_Object *args) |
d888760c GM |
2693 | { |
2694 | struct Lisp_Process *p; | |
2695 | Lisp_Object contact = Qnil; | |
2696 | Lisp_Object proc = Qnil; | |
2697 | struct gcpro gcpro1; | |
2698 | ||
2699 | contact = Flist (nargs, args); | |
2700 | GCPRO1 (contact); | |
2701 | ||
2702 | proc = Fplist_get (contact, QCprocess); | |
2703 | if (NILP (proc)) | |
2704 | proc = Fplist_get (contact, QCname); | |
2705 | if (NILP (proc)) | |
2706 | proc = Fplist_get (contact, QCbuffer); | |
2707 | if (NILP (proc)) | |
2708 | proc = Fplist_get (contact, QCport); | |
2709 | proc = get_process (proc); | |
2710 | p = XPROCESS (proc); | |
a879ee6f | 2711 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2712 | error ("Not a serial process"); |
2713 | ||
2714 | if (NILP (Fplist_get (p->childp, QCspeed))) | |
2715 | { | |
2716 | UNGCPRO; | |
2717 | return Qnil; | |
2718 | } | |
2719 | ||
2720 | serial_configure (p, contact); | |
2721 | ||
2722 | UNGCPRO; | |
2723 | return Qnil; | |
2724 | } | |
d888760c | 2725 | |
d888760c GM |
2726 | /* Used by make-serial-process to recover from errors. */ |
2727 | Lisp_Object make_serial_process_unwind (Lisp_Object proc) | |
2728 | { | |
2729 | if (!PROCESSP (proc)) | |
2730 | abort (); | |
2731 | remove_process (proc); | |
2732 | return Qnil; | |
2733 | } | |
d888760c | 2734 | |
d888760c GM |
2735 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2736 | 0, MANY, 0, | |
2737 | doc: /* Create and return a serial port process. | |
2738 | ||
2739 | In Emacs, serial port connections are represented by process objects, | |
2740 | so input and output work as for subprocesses, and `delete-process' | |
2741 | closes a serial port connection. However, a serial process has no | |
2742 | process id, it cannot be signaled, and the status codes are different | |
2743 | from normal processes. | |
2744 | ||
2745 | `make-serial-process' creates a process and a buffer, on which you | |
2746 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2747 | an interactive terminal. See below for examples. | |
2748 | ||
2749 | Arguments are specified as keyword/argument pairs. The following | |
2750 | arguments are defined: | |
2751 | ||
2752 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2753 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2754 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2755 | the backslashes in strings). | |
2756 | ||
2757 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
2758 | which is called by `make-serial-process'. | |
2759 | ||
2760 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2761 | the value of PORT is used. | |
2762 | ||
2763 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2764 | with the process. Process output goes at the end of that buffer, | |
2765 | unless you specify an output stream or filter function to handle the | |
2766 | output. If BUFFER is not given, the value of NAME is used. | |
2767 | ||
2768 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2769 | system used for both reading and writing for this process. If CODING | |
2770 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2771 | ENCODING is used for writing. | |
2772 | ||
2773 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2774 | the process is running. If BOOL is not given, query before exiting. | |
2775 | ||
2776 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2777 | In the stopped state, a serial process does not accept incoming data, | |
2778 | but you can send outgoing data. The stopped state is cleared by | |
2779 | `continue-process' and set by `stop-process'. | |
2780 | ||
2781 | :filter FILTER -- Install FILTER as the process filter. | |
2782 | ||
2783 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2784 | ||
2785 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2786 | ||
2787 | :speed | |
2788 | :bytesize | |
2789 | :parity | |
2790 | :stopbits | |
2791 | :flowcontrol | |
2792 | -- These arguments are handled by `serial-process-configure', which is | |
2793 | called by `make-serial-process'. | |
2794 | ||
2795 | The original argument list, possibly modified by later configuration, | |
2796 | is available via the function `process-contact'. | |
2797 | ||
2798 | Examples: | |
2799 | ||
2800 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2801 | ||
2802 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2803 | ||
2804 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2805 | ||
2806 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2807 | ||
2808 | usage: (make-serial-process &rest ARGS) */) | |
5842a27b | 2809 | (int nargs, Lisp_Object *args) |
d888760c GM |
2810 | { |
2811 | int fd = -1; | |
2812 | Lisp_Object proc, contact, port; | |
2813 | struct Lisp_Process *p; | |
2814 | struct gcpro gcpro1; | |
2815 | Lisp_Object name, buffer; | |
2816 | Lisp_Object tem, val; | |
2817 | int specpdl_count = -1; | |
2818 | ||
2819 | if (nargs == 0) | |
2820 | return Qnil; | |
2821 | ||
2822 | contact = Flist (nargs, args); | |
2823 | GCPRO1 (contact); | |
2824 | ||
2825 | port = Fplist_get (contact, QCport); | |
2826 | if (NILP (port)) | |
2827 | error ("No port specified"); | |
2828 | CHECK_STRING (port); | |
2829 | ||
2830 | if (NILP (Fplist_member (contact, QCspeed))) | |
2831 | error (":speed not specified"); | |
2832 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2833 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2834 | ||
2835 | name = Fplist_get (contact, QCname); | |
2836 | if (NILP (name)) | |
2837 | name = port; | |
2838 | CHECK_STRING (name); | |
2839 | proc = make_process (name); | |
2840 | specpdl_count = SPECPDL_INDEX (); | |
2841 | record_unwind_protect (make_serial_process_unwind, proc); | |
2842 | p = XPROCESS (proc); | |
2843 | ||
51b59d79 | 2844 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2845 | p->infd = fd; |
2846 | p->outfd = fd; | |
2847 | if (fd > max_process_desc) | |
2848 | max_process_desc = fd; | |
2849 | chan_process[fd] = proc; | |
2850 | ||
2851 | buffer = Fplist_get (contact, QCbuffer); | |
2852 | if (NILP (buffer)) | |
2853 | buffer = name; | |
2854 | buffer = Fget_buffer_create (buffer); | |
2855 | p->buffer = buffer; | |
2856 | ||
2857 | p->childp = contact; | |
2858 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); | |
2859 | p->type = Qserial; | |
2860 | p->sentinel = Fplist_get (contact, QCsentinel); | |
2861 | p->filter = Fplist_get (contact, QCfilter); | |
2862 | p->log = Qnil; | |
2863 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
2864 | p->kill_without_query = 1; | |
2865 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
2866 | p->command = Qt; | |
2867 | p->pty_flag = 0; | |
2868 | ||
2869 | if (!EQ (p->command, Qt)) | |
2870 | { | |
2871 | FD_SET (fd, &input_wait_mask); | |
2872 | FD_SET (fd, &non_keyboard_wait_mask); | |
2873 | } | |
2874 | ||
2875 | if (BUFFERP (buffer)) | |
2876 | { | |
2877 | set_marker_both (p->mark, buffer, | |
2878 | BUF_ZV (XBUFFER (buffer)), | |
2879 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2880 | } | |
2881 | ||
2882 | tem = Fplist_member (contact, QCcoding); | |
2883 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2884 | tem = Qnil; | |
2885 | ||
2886 | val = Qnil; | |
2887 | if (!NILP (tem)) | |
2888 | { | |
2889 | val = XCAR (XCDR (tem)); | |
2890 | if (CONSP (val)) | |
2891 | val = XCAR (val); | |
2892 | } | |
2893 | else if (!NILP (Vcoding_system_for_read)) | |
2894 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2895 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2896 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c GM |
2897 | val = Qnil; |
2898 | p->decode_coding_system = val; | |
2899 | ||
2900 | val = Qnil; | |
2901 | if (!NILP (tem)) | |
2902 | { | |
2903 | val = XCAR (XCDR (tem)); | |
2904 | if (CONSP (val)) | |
2905 | val = XCDR (val); | |
2906 | } | |
2907 | else if (!NILP (Vcoding_system_for_write)) | |
2908 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2909 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2910 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c GM |
2911 | val = Qnil; |
2912 | p->encode_coding_system = val; | |
2913 | ||
2914 | setup_process_coding_systems (proc); | |
cbe81f1d | 2915 | p->decoding_buf = empty_unibyte_string; |
d888760c | 2916 | p->decoding_carryover = 0; |
cbe81f1d | 2917 | p->encoding_buf = empty_unibyte_string; |
d888760c GM |
2918 | p->inherit_coding_system_flag |
2919 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2920 | ||
ed3751c8 | 2921 | Fserial_process_configure (nargs, args); |
d888760c GM |
2922 | |
2923 | specpdl_ptr = specpdl + specpdl_count; | |
2924 | ||
2925 | UNGCPRO; | |
2926 | return proc; | |
2927 | } | |
d888760c | 2928 | |
e690ca94 KS |
2929 | /* Create a network stream/datagram client/server process. Treated |
2930 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2931 | differences are in status display and process deletion. A network |
2932 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2933 | stop/continue it and deactivate/close it via delete-process */ |
2934 | ||
177c0ea7 JB |
2935 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2936 | 0, MANY, 0, | |
e690ca94 KS |
2937 | doc: /* Create and return a network server or client process. |
2938 | ||
fa9d4315 | 2939 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2940 | input and output work as for subprocesses and `delete-process' closes |
2941 | a network connection. However, a network process has no process id, | |
d22426e1 | 2942 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2943 | processes. |
2944 | ||
2945 | Arguments are specified as keyword/argument pairs. The following | |
2946 | arguments are defined: | |
2947 | ||
2948 | :name NAME -- NAME is name for process. It is modified if necessary | |
2949 | to make it unique. | |
2950 | ||
2951 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2952 | with the process. Process output goes at end of that buffer, unless | |
2953 | you specify an output stream or filter function to handle the output. | |
2954 | BUFFER may be also nil, meaning that this process is not associated | |
2955 | with any buffer. | |
2956 | ||
2957 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2958 | address. The symbol `local' specifies the local host. If specified | |
2959 | for a server process, it must be a valid name or address for the local | |
2960 | host, and only clients connecting to that address will be accepted. | |
2961 | ||
2962 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2963 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2964 | a random port number is selected for the server. (If Emacs was |
2965 | compiled with getaddrinfo, a port number can also be specified as a | |
2966 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2967 | |
9057ff80 | 2968 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2969 | stream type connection, `datagram' creates a datagram type connection, |
2970 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2971 | |
e690ca94 | 2972 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2973 | service specified by HOST and SERVICE. The default (nil) is to use |
2974 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2975 | and port number specified by HOST and SERVICE. Other address families | |
2976 | supported are: | |
e690ca94 | 2977 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2978 | ipv4 -- use IPv4 address family only. |
2979 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2980 | |
2981 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2982 | This parameter is ignored when opening a client process. When specified | |
2983 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2984 | ||
2985 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2986 | connection. This parameter is ignored when opening a stream server | |
2987 | process. For a datagram server process, it specifies the initial | |
2988 | setting of the remote datagram address. When specified for a client | |
2989 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2990 | ||
2991 | The format of ADDRESS depends on the address family: | |
2992 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2993 | corresponding to numeric IP address A.B.C.D and port number P. | |
2994 | - A local address is represented as a string with the address in the | |
2995 | local address space. | |
2996 | - An "unsupported family" address is represented by a cons (F . AV) | |
2997 | where F is the family number and AV is a vector containing the socket | |
2998 | address data with one element per address data byte. Do not rely on | |
2999 | this format in portable code, as it may depend on implementation | |
3000 | defined constants, data sizes, and data structure alignment. | |
3001 | ||
6b61353c KH |
3002 | :coding CODING -- If CODING is a symbol, it specifies the coding |
3003 | system used for both reading and writing for this process. If CODING | |
3004 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
3005 | ENCODING is used for writing. | |
e690ca94 KS |
3006 | |
3007 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
3008 | return without waiting for the connection to complete; instead, the | |
3009 | sentinel function will be called with second arg matching "open" (if | |
3010 | successful) or "failed" when the connect completes. Default is to use | |
3011 | a blocking connect (i.e. wait) for stream type connections. | |
3012 | ||
3013 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 3014 | running when Emacs is exited. |
e690ca94 KS |
3015 | |
3016 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
3017 | In the stopped state, a server process does not accept new | |
3018 | connections, and a client process does not handle incoming traffic. | |
3019 | The stopped state is cleared by `continue-process' and set by | |
3020 | `stop-process'. | |
3021 | ||
3022 | :filter FILTER -- Install FILTER as the process filter. | |
3023 | ||
7392e23c KS |
3024 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
3025 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 3026 | If this keyword is not specified, the strings are multibyte if |
03f04413 KH |
3027 | `default-enable-multibyte-characters' is non-nil. |
3028 | ||
e690ca94 KS |
3029 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
3030 | ||
3031 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 3032 | function is called when the server accepts a network connection from a |
e690ca94 KS |
3033 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
3034 | is the server process, CLIENT is the new process for the connection, | |
3035 | and MESSAGE is a string. | |
3036 | ||
faa7db08 | 3037 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 3038 | |
6b61353c | 3039 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 3040 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
3041 | If QLEN is an integer, it is used as the max. length of the server's |
3042 | pending connection queue (also known as the backlog); the default | |
3043 | queue length is 5. Default is to create a client process. | |
3044 | ||
3045 | The following network options can be specified for this connection: | |
3046 | ||
3047 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
3048 | :dontroute BOOL -- Only send to directly connected hosts. | |
3049 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
3050 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
3051 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
3052 | :priority INT -- Set protocol defined priority for sent packets. | |
3053 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
3054 | (this is allowed by default for a server process). | |
3055 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
3056 | special privileges on some systems. | |
3057 | ||
3058 | Consult the relevant system programmer's manual pages for more | |
3059 | information on using these options. | |
3060 | ||
3061 | ||
3062 | A server process will listen for and accept connections from clients. | |
3063 | When a client connection is accepted, a new network process is created | |
3064 | for the connection with the following parameters: | |
e690ca94 | 3065 | |
e690ca94 KS |
3066 | - The client's process name is constructed by concatenating the server |
3067 | process' NAME and a client identification string. | |
3068 | - If the FILTER argument is non-nil, the client process will not get a | |
3069 | separate process buffer; otherwise, the client's process buffer is a newly | |
3070 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 3071 | NAME concatenated with the client identification string. |
e690ca94 KS |
3072 | - The connection type and the process filter and sentinel parameters are |
3073 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
3074 | - The client process' contact info is set according to the client's | |
3075 | addressing information (typically an IP address and a port number). | |
faa7db08 | 3076 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
3077 | |
3078 | Notice that the FILTER and SENTINEL args are never used directly by | |
3079 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
3080 | the server process, but via the optional :log function, accepted (and |
3081 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 3082 | |
365aee82 KS |
3083 | The original argument list, modified with the actual connection |
3084 | information, is available via the `process-contact' function. | |
365aee82 | 3085 | |
fa9d4315 | 3086 | usage: (make-network-process &rest ARGS) */) |
5842a27b | 3087 | (int nargs, Lisp_Object *args) |
d0d6b7c5 JB |
3088 | { |
3089 | Lisp_Object proc; | |
e690ca94 KS |
3090 | Lisp_Object contact; |
3091 | struct Lisp_Process *p; | |
70dbdb36 | 3092 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3093 | struct addrinfo ai, *res, *lres; |
e1652a86 | 3094 | struct addrinfo hints; |
8ea90aa3 DN |
3095 | const char *portstring; |
3096 | char portbuf[128]; | |
70dbdb36 | 3097 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
3098 | struct _emacs_addrinfo |
3099 | { | |
3100 | int ai_family; | |
3101 | int ai_socktype; | |
3102 | int ai_protocol; | |
3103 | int ai_addrlen; | |
3104 | struct sockaddr *ai_addr; | |
3105 | struct _emacs_addrinfo *ai_next; | |
3106 | } ai, *res, *lres; | |
418b48fd | 3107 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
3108 | struct sockaddr_in address_in; |
3109 | #ifdef HAVE_LOCAL_SOCKETS | |
3110 | struct sockaddr_un address_un; | |
3111 | #endif | |
3112 | int port; | |
dd2a17ab KS |
3113 | int ret = 0; |
3114 | int xerrno = 0; | |
418b48fd | 3115 | int s = -1, outch, inch; |
e690ca94 | 3116 | struct gcpro gcpro1; |
aed13378 | 3117 | int count = SPECPDL_INDEX (); |
5684cd6e | 3118 | int count1; |
e690ca94 KS |
3119 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
3120 | Lisp_Object tem; | |
3121 | Lisp_Object name, buffer, host, service, address; | |
3122 | Lisp_Object filter, sentinel; | |
3123 | int is_non_blocking_client = 0; | |
6b61353c | 3124 | int is_server = 0, backlog = 5; |
9057ff80 | 3125 | int socktype; |
e690ca94 KS |
3126 | int family = -1; |
3127 | ||
3128 | if (nargs == 0) | |
3129 | return Qnil; | |
dd2a17ab | 3130 | |
e690ca94 KS |
3131 | /* Save arguments for process-contact and clone-process. */ |
3132 | contact = Flist (nargs, args); | |
3133 | GCPRO1 (contact); | |
3134 | ||
bff3ed0a RS |
3135 | #ifdef WINDOWSNT |
3136 | /* Ensure socket support is loaded if available. */ | |
3137 | init_winsock (TRUE); | |
3138 | #endif | |
3139 | ||
9057ff80 KS |
3140 | /* :type TYPE (nil: stream, datagram */ |
3141 | tem = Fplist_get (contact, QCtype); | |
3142 | if (NILP (tem)) | |
3143 | socktype = SOCK_STREAM; | |
3144 | #ifdef DATAGRAM_SOCKETS | |
3145 | else if (EQ (tem, Qdatagram)) | |
3146 | socktype = SOCK_DGRAM; | |
f00c449b SM |
3147 | #endif |
3148 | #ifdef HAVE_SEQPACKET | |
3149 | else if (EQ (tem, Qseqpacket)) | |
3150 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 3151 | #endif |
9057ff80 KS |
3152 | else |
3153 | error ("Unsupported connection type"); | |
e690ca94 KS |
3154 | |
3155 | /* :server BOOL */ | |
3156 | tem = Fplist_get (contact, QCserver); | |
3157 | if (!NILP (tem)) | |
3158 | { | |
75728599 JR |
3159 | /* Don't support network sockets when non-blocking mode is |
3160 | not available, since a blocked Emacs is not useful. */ | |
132d0475 | 3161 | #if !defined(O_NONBLOCK) && !defined(O_NDELAY) |
e690ca94 KS |
3162 | error ("Network servers not supported"); |
3163 | #else | |
3164 | is_server = 1; | |
6b61353c KH |
3165 | if (INTEGERP (tem)) |
3166 | backlog = XINT (tem); | |
e690ca94 KS |
3167 | #endif |
3168 | } | |
3169 | ||
3170 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
3171 | QCaddress = is_server ? QClocal : QCremote; | |
3172 | ||
d7e344cd | 3173 | /* :nowait BOOL */ |
84b31826 | 3174 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
3175 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
3176 | { | |
3177 | #ifndef NON_BLOCKING_CONNECT | |
3178 | error ("Non-blocking connect not supported"); | |
3179 | #else | |
3180 | is_non_blocking_client = 1; | |
3181 | #endif | |
3182 | } | |
3183 | ||
3184 | name = Fplist_get (contact, QCname); | |
3185 | buffer = Fplist_get (contact, QCbuffer); | |
3186 | filter = Fplist_get (contact, QCfilter); | |
3187 | sentinel = Fplist_get (contact, QCsentinel); | |
3188 | ||
b7826503 | 3189 | CHECK_STRING (name); |
e690ca94 | 3190 | |
e690ca94 KS |
3191 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
3192 | ai.ai_socktype = socktype; | |
3193 | ai.ai_protocol = 0; | |
3194 | ai.ai_next = NULL; | |
3195 | res = &ai; | |
a319f7c1 | 3196 | |
e690ca94 KS |
3197 | /* :local ADDRESS or :remote ADDRESS */ |
3198 | address = Fplist_get (contact, QCaddress); | |
3199 | if (!NILP (address)) | |
a319f7c1 | 3200 | { |
e690ca94 KS |
3201 | host = service = Qnil; |
3202 | ||
3203 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
3204 | error ("Malformed :address"); | |
3205 | ai.ai_family = family; | |
3206 | ai.ai_addr = alloca (ai.ai_addrlen); | |
3207 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
3208 | goto open_socket; | |
a319f7c1 | 3209 | } |
e690ca94 KS |
3210 | |
3211 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
3212 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 3213 | if (NILP (tem)) |
a319f7c1 | 3214 | { |
87b6ca8d | 3215 | #if defined(HAVE_GETADDRINFO) && defined(AF_INET6) |
e1652a86 KS |
3216 | family = AF_UNSPEC; |
3217 | #else | |
3218 | family = AF_INET; | |
e690ca94 | 3219 | #endif |
a319f7c1 | 3220 | } |
e1652a86 KS |
3221 | #ifdef HAVE_LOCAL_SOCKETS |
3222 | else if (EQ (tem, Qlocal)) | |
3223 | family = AF_LOCAL; | |
3224 | #endif | |
3225 | #ifdef AF_INET6 | |
3226 | else if (EQ (tem, Qipv6)) | |
3227 | family = AF_INET6; | |
3228 | #endif | |
3229 | else if (EQ (tem, Qipv4)) | |
3230 | family = AF_INET; | |
3231 | else if (INTEGERP (tem)) | |
3232 | family = XINT (tem); | |
3233 | else | |
e690ca94 | 3234 | error ("Unknown address family"); |
e1652a86 | 3235 | |
e690ca94 KS |
3236 | ai.ai_family = family; |
3237 | ||
3238 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3239 | service = Fplist_get (contact, QCservice); | |
3240 | ||
66a9f7f4 SM |
3241 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3242 | host = Fplist_get (contact, QChost); | |
3243 | if (!NILP (host)) | |
3244 | { | |
3245 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
3246 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
3247 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
3248 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
3249 | CHECK_STRING (host); |
3250 | } | |
3251 | ||
e690ca94 KS |
3252 | #ifdef HAVE_LOCAL_SOCKETS |
3253 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3254 | { |
66a9f7f4 SM |
3255 | if (!NILP (host)) |
3256 | { | |
3257 | message (":family local ignores the :host \"%s\" property", | |
3258 | SDATA (host)); | |
3259 | contact = Fplist_put (contact, QChost, Qnil); | |
3260 | host = Qnil; | |
3261 | } | |
b7826503 | 3262 | CHECK_STRING (service); |
72af86bd | 3263 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3264 | address_un.sun_family = AF_LOCAL; |
42a5b22f | 3265 | strncpy (address_un.sun_path, SSDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
3266 | ai.ai_addr = (struct sockaddr *) &address_un; |
3267 | ai.ai_addrlen = sizeof address_un; | |
3268 | goto open_socket; | |
d0d6b7c5 | 3269 | } |
e690ca94 | 3270 | #endif |
a319f7c1 | 3271 | |
798b64bb KH |
3272 | /* Slow down polling to every ten seconds. |
3273 | Some kernels have a bug which causes retrying connect to fail | |
3274 | after a connect. Polling can interfere with gethostbyname too. */ | |
3275 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3276 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3277 | { |
3278 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3279 | bind_polling_period (10); | |
3280 | } | |
798b64bb KH |
3281 | #endif |
3282 | ||
a319f7c1 | 3283 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3284 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3285 | Otherwise, use getservbyname to lookup the service. */ | |
3286 | if (!NILP (host)) | |
3287 | { | |
3288 | ||
3289 | /* SERVICE can either be a string or int. | |
3290 | Convert to a C string for later use by getaddrinfo. */ | |
3291 | if (EQ (service, Qt)) | |
3292 | portstring = "0"; | |
3293 | else if (INTEGERP (service)) | |
3294 | { | |
3295 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
3296 | portstring = portbuf; | |
3297 | } | |
3298 | else | |
3299 | { | |
3300 | CHECK_STRING (service); | |
42a5b22f | 3301 | portstring = SSDATA (service); |
e690ca94 KS |
3302 | } |
3303 | ||
3304 | immediate_quit = 1; | |
3305 | QUIT; | |
3306 | memset (&hints, 0, sizeof (hints)); | |
3307 | hints.ai_flags = 0; | |
e1652a86 | 3308 | hints.ai_family = family; |
e690ca94 KS |
3309 | hints.ai_socktype = socktype; |
3310 | hints.ai_protocol = 0; | |
08116b48 CY |
3311 | |
3312 | #ifdef HAVE_RES_INIT | |
3313 | res_init (); | |
3314 | #endif | |
3315 | ||
42a5b22f | 3316 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3317 | if (ret) |
f6270f62 | 3318 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3319 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3320 | #else |
42a5b22f | 3321 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3322 | #endif |
e690ca94 | 3323 | immediate_quit = 0; |
a319f7c1 | 3324 | |
e690ca94 KS |
3325 | goto open_socket; |
3326 | } | |
3327 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3328 | |
e690ca94 KS |
3329 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3330 | has been specified (e.g. for a local server process). */ | |
3331 | ||
3332 | if (EQ (service, Qt)) | |
3333 | port = 0; | |
3334 | else if (INTEGERP (service)) | |
3335 | port = htons ((unsigned short) XINT (service)); | |
3336 | else | |
616da37c | 3337 | { |
e690ca94 KS |
3338 | struct servent *svc_info; |
3339 | CHECK_STRING (service); | |
42a5b22f | 3340 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3341 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3342 | if (svc_info == 0) | |
d5db4077 | 3343 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3344 | port = svc_info->s_port; |
3345 | } | |
3346 | ||
72af86bd | 3347 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3348 | address_in.sin_family = family; |
3349 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3350 | address_in.sin_port = port; | |
3351 | ||
3352 | #ifndef HAVE_GETADDRINFO | |
3353 | if (!NILP (host)) | |
3354 | { | |
3355 | struct hostent *host_info_ptr; | |
3356 | ||
3357 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 3358 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3359 | immediate_quit = 1; |
3360 | QUIT; | |
08116b48 CY |
3361 | |
3362 | #ifdef HAVE_RES_INIT | |
3363 | res_init (); | |
3364 | #endif | |
3365 | ||
d5db4077 | 3366 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3367 | immediate_quit = 0; |
177c0ea7 | 3368 | |
e690ca94 KS |
3369 | if (host_info_ptr) |
3370 | { | |
72af86bd AS |
3371 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3372 | host_info_ptr->h_length); | |
e690ca94 KS |
3373 | family = host_info_ptr->h_addrtype; |
3374 | address_in.sin_family = family; | |
3375 | } | |
3376 | else | |
3377 | /* Attempt to interpret host as numeric inet address */ | |
3378 | { | |
4624371d | 3379 | unsigned long numeric_addr; |
51b59d79 | 3380 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3381 | if (numeric_addr == -1) |
d5db4077 | 3382 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3383 | |
72af86bd AS |
3384 | memcpy (&address_in.sin_addr, &numeric_addr, |
3385 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3386 | } |
d0d6b7c5 | 3387 | |
e690ca94 | 3388 | } |
dd2a17ab | 3389 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3390 | |
e690ca94 KS |
3391 | ai.ai_family = family; |
3392 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3393 | ai.ai_addrlen = sizeof address_in; | |
3394 | ||
3395 | open_socket: | |
3396 | ||
dd2a17ab | 3397 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3398 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3399 | s = -1; |
457a9bee | 3400 | |
dd2a17ab KS |
3401 | for (lres = res; lres; lres = lres->ai_next) |
3402 | { | |
6b61353c KH |
3403 | int optn, optbits; |
3404 | ||
649dbf36 CY |
3405 | retry_connect: |
3406 | ||
dd2a17ab KS |
3407 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3408 | if (s < 0) | |
3409 | { | |
3410 | xerrno = errno; | |
3411 | continue; | |
3412 | } | |
0f2ee0c1 | 3413 | |
e690ca94 KS |
3414 | #ifdef DATAGRAM_SOCKETS |
3415 | if (!is_server && socktype == SOCK_DGRAM) | |
3416 | break; | |
3417 | #endif /* DATAGRAM_SOCKETS */ | |
3418 | ||
dd2a17ab | 3419 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3420 | if (is_non_blocking_client) |
dd2a17ab KS |
3421 | { |
3422 | #ifdef O_NONBLOCK | |
3423 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3424 | #else | |
3425 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3426 | #endif | |
3427 | if (ret < 0) | |
3428 | { | |
3429 | xerrno = errno; | |
3430 | emacs_close (s); | |
3431 | s = -1; | |
3432 | continue; | |
3433 | } | |
3434 | } | |
3435 | #endif | |
177c0ea7 | 3436 | |
dd2a17ab | 3437 | /* Make us close S if quit. */ |
dd2a17ab KS |
3438 | record_unwind_protect (close_file_unwind, make_number (s)); |
3439 | ||
6b61353c KH |
3440 | /* Parse network options in the arg list. |
3441 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3442 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3443 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3444 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3445 | ||
e690ca94 KS |
3446 | if (is_server) |
3447 | { | |
3448 | /* Configure as a server socket. */ | |
6b61353c KH |
3449 | |
3450 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3451 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3452 | #ifdef HAVE_LOCAL_SOCKETS |
3453 | if (family != AF_LOCAL) | |
3454 | #endif | |
6b61353c KH |
3455 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3456 | { | |
3457 | int optval = 1; | |
3458 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3459 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3460 | } | |
177c0ea7 | 3461 | |
e690ca94 KS |
3462 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3463 | report_file_error ("Cannot bind server socket", Qnil); | |
3464 | ||
3465 | #ifdef HAVE_GETSOCKNAME | |
3466 | if (EQ (service, Qt)) | |
3467 | { | |
3468 | struct sockaddr_in sa1; | |
3469 | int len1 = sizeof (sa1); | |
3470 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3471 | { | |
3472 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3473 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3474 | contact = Fplist_put (contact, QCservice, service); |
3475 | } | |
3476 | } | |
3477 | #endif | |
3478 | ||
84b31826 | 3479 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3480 | report_file_error ("Cannot listen on server socket", Qnil); |
3481 | ||
3482 | break; | |
3483 | } | |
3484 | ||
dd2a17ab KS |
3485 | immediate_quit = 1; |
3486 | QUIT; | |
3487 | ||
dd2a17ab KS |
3488 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3489 | xerrno = errno; | |
3490 | ||
dd2a17ab KS |
3491 | if (ret == 0 || xerrno == EISCONN) |
3492 | { | |
dd2a17ab KS |
3493 | /* The unwind-protect will be discarded afterwards. |
3494 | Likewise for immediate_quit. */ | |
3495 | break; | |
3496 | } | |
3497 | ||
3498 | #ifdef NON_BLOCKING_CONNECT | |
3499 | #ifdef EINPROGRESS | |
e690ca94 | 3500 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3501 | break; |
3502 | #else | |
3503 | #ifdef EWOULDBLOCK | |
e690ca94 | 3504 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3505 | break; |
3506 | #endif | |
3507 | #endif | |
3508 | #endif | |
649dbf36 CY |
3509 | |
3510 | #ifndef WINDOWSNT | |
cd591dbc HE |
3511 | if (xerrno == EINTR) |
3512 | { | |
3513 | /* Unlike most other syscalls connect() cannot be called | |
3514 | again. (That would return EALREADY.) The proper way to | |
3515 | wait for completion is select(). */ | |
649dbf36 | 3516 | int sc, len; |
cd591dbc HE |
3517 | SELECT_TYPE fdset; |
3518 | retry_select: | |
3519 | FD_ZERO (&fdset); | |
3520 | FD_SET (s, &fdset); | |
3521 | QUIT; | |
3522 | sc = select (s + 1, (SELECT_TYPE *)0, &fdset, (SELECT_TYPE *)0, | |
3523 | (EMACS_TIME *)0); | |
3524 | if (sc == -1) | |
3525 | { | |
649dbf36 | 3526 | if (errno == EINTR) |
cd591dbc | 3527 | goto retry_select; |
649dbf36 | 3528 | else |
cd591dbc HE |
3529 | report_file_error ("select failed", Qnil); |
3530 | } | |
3531 | eassert (sc > 0); | |
649dbf36 CY |
3532 | |
3533 | len = sizeof xerrno; | |
3534 | eassert (FD_ISSET (s, &fdset)); | |
3535 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3536 | report_file_error ("getsockopt failed", Qnil); | |
3537 | if (xerrno) | |
3538 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3539 | else | |
3540 | break; | |
cd591dbc | 3541 | } |
649dbf36 | 3542 | #endif /* !WINDOWSNT */ |
e333e864 | 3543 | |
0f2ee0c1 RS |
3544 | immediate_quit = 0; |
3545 | ||
dd2a17ab | 3546 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3547 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3548 | emacs_close (s); |
dd2a17ab | 3549 | s = -1; |
649dbf36 CY |
3550 | |
3551 | #ifdef WINDOWSNT | |
3552 | if (xerrno == EINTR) | |
3553 | goto retry_connect; | |
3554 | #endif | |
dd2a17ab | 3555 | } |
457a9bee | 3556 | |
e690ca94 KS |
3557 | if (s >= 0) |
3558 | { | |
3559 | #ifdef DATAGRAM_SOCKETS | |
3560 | if (socktype == SOCK_DGRAM) | |
3561 | { | |
3562 | if (datagram_address[s].sa) | |
3563 | abort (); | |
3564 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3565 | datagram_address[s].len = lres->ai_addrlen; | |
3566 | if (is_server) | |
3567 | { | |
3568 | Lisp_Object remote; | |
72af86bd | 3569 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3570 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3571 | { | |
3572 | int rfamily, rlen; | |
3573 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3574 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3575 | conv_lisp_to_sockaddr (rfamily, remote, | |
3576 | datagram_address[s].sa, rlen); | |
3577 | } | |
3578 | } | |
3579 | else | |
72af86bd | 3580 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3581 | } |
3582 | #endif | |
177c0ea7 | 3583 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3584 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3585 | #ifdef HAVE_GETSOCKNAME |
3586 | if (!is_server) | |
3587 | { | |
3588 | struct sockaddr_in sa1; | |
3589 | int len1 = sizeof (sa1); | |
3590 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3591 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3592 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3593 | } |
3594 | #endif | |
e690ca94 KS |
3595 | } |
3596 | ||
54b3b62f YM |
3597 | immediate_quit = 0; |
3598 | ||
dd2a17ab | 3599 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3600 | if (res != &ai) |
54b3b62f YM |
3601 | { |
3602 | BLOCK_INPUT; | |
3603 | freeaddrinfo (res); | |
3604 | UNBLOCK_INPUT; | |
3605 | } | |
dd2a17ab KS |
3606 | #endif |
3607 | ||
e690ca94 KS |
3608 | /* Discard the unwind protect for closing S, if any. */ |
3609 | specpdl_ptr = specpdl + count1; | |
3610 | ||
3611 | /* Unwind bind_polling_period and request_sigio. */ | |
3612 | unbind_to (count, Qnil); | |
3613 | ||
dd2a17ab KS |
3614 | if (s < 0) |
3615 | { | |
dd2a17ab KS |
3616 | /* If non-blocking got this far - and failed - assume non-blocking is |
3617 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3618 | the normal blocking calls to open-network-stream handles this error |
3619 | better. */ | |
3620 | if (is_non_blocking_client) | |
dd2a17ab | 3621 | return Qnil; |
dd2a17ab | 3622 | |
d0d6b7c5 | 3623 | errno = xerrno; |
e690ca94 KS |
3624 | if (is_server) |
3625 | report_file_error ("make server process failed", contact); | |
3626 | else | |
3627 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3628 | } |
44ade2e9 | 3629 | |
d0d6b7c5 | 3630 | inch = s; |
59f23005 | 3631 | outch = s; |
d0d6b7c5 JB |
3632 | |
3633 | if (!NILP (buffer)) | |
3634 | buffer = Fget_buffer_create (buffer); | |
3635 | proc = make_process (name); | |
3636 | ||
3637 | chan_process[inch] = proc; | |
3638 | ||
3639 | #ifdef O_NONBLOCK | |
3640 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3641 | #else | |
3642 | #ifdef O_NDELAY | |
3643 | fcntl (inch, F_SETFL, O_NDELAY); | |
3644 | #endif | |
3645 | #endif | |
3646 | ||
e690ca94 KS |
3647 | p = XPROCESS (proc); |
3648 | ||
3649 | p->childp = contact; | |
faa7db08 | 3650 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
d888760c | 3651 | p->type = Qnetwork; |
177c0ea7 | 3652 | |
e690ca94 KS |
3653 | p->buffer = buffer; |
3654 | p->sentinel = sentinel; | |
3655 | p->filter = filter; | |
3656 | p->log = Fplist_get (contact, QClog); | |
3657 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
60f0fb11 | 3658 | p->kill_without_query = 1; |
e690ca94 KS |
3659 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
3660 | p->command = Qt; | |
6bfd98e7 | 3661 | p->pid = 0; |
60f0fb11 SM |
3662 | p->infd = inch; |
3663 | p->outfd = outch; | |
84b31826 | 3664 | if (is_server && socktype != SOCK_DGRAM) |
e690ca94 | 3665 | p->status = Qlisten; |
dd2a17ab | 3666 | |
f523e0c3 SM |
3667 | /* Make the process marker point into the process buffer (if any). */ |
3668 | if (BUFFERP (buffer)) | |
3669 | set_marker_both (p->mark, buffer, | |
3670 | BUF_ZV (XBUFFER (buffer)), | |
3671 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3672 | ||
dd2a17ab | 3673 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3674 | if (is_non_blocking_client) |
dd2a17ab KS |
3675 | { |
3676 | /* We may get here if connect did succeed immediately. However, | |
3677 | in that case, we still need to signal this like a non-blocking | |
3678 | connection. */ | |
e690ca94 | 3679 | p->status = Qconnect; |
dd2a17ab KS |
3680 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3681 | { | |
3682 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3683 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3684 | num_pending_connects++; |
3685 | } | |
3686 | } | |
3687 | else | |
3688 | #endif | |
e690ca94 KS |
3689 | /* A server may have a client filter setting of Qt, but it must |
3690 | still listen for incoming connects unless it is stopped. */ | |
3691 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3692 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3693 | { |
3694 | FD_SET (inch, &input_wait_mask); | |
3695 | FD_SET (inch, &non_keyboard_wait_mask); | |
3696 | } | |
3697 | ||
7d0e672e RS |
3698 | if (inch > max_process_desc) |
3699 | max_process_desc = inch; | |
d0d6b7c5 | 3700 | |
e690ca94 KS |
3701 | tem = Fplist_member (contact, QCcoding); |
3702 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3703 | tem = Qnil; /* No error message (too late!). */ | |
3704 | ||
67918941 RS |
3705 | { |
3706 | /* Setup coding systems for communicating with the network stream. */ | |
3707 | struct gcpro gcpro1; | |
3708 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3709 | Lisp_Object coding_systems = Qt; | |
3710 | Lisp_Object args[5], val; | |
3711 | ||
e690ca94 | 3712 | if (!NILP (tem)) |
6b61353c KH |
3713 | { |
3714 | val = XCAR (XCDR (tem)); | |
3715 | if (CONSP (val)) | |
3716 | val = XCAR (val); | |
3717 | } | |
e690ca94 | 3718 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3719 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3720 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3721 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3722 | /* We dare not decode end-of-line format by setting VAL to |
3723 | Qraw_text, because the existing Emacs Lisp libraries | |
3724 | assume that they receive bare code including a sequene of | |
3725 | CR LF. */ | |
3726 | val = Qnil; | |
3727 | else | |
3728 | { | |
991234f0 KS |
3729 | if (NILP (host) || NILP (service)) |
3730 | coding_systems = Qnil; | |
3731 | else | |
3732 | { | |
3733 | args[0] = Qopen_network_stream, args[1] = name, | |
3734 | args[2] = buffer, args[3] = host, args[4] = service; | |
3735 | GCPRO1 (proc); | |
3736 | coding_systems = Ffind_operation_coding_system (5, args); | |
3737 | UNGCPRO; | |
3738 | } | |
67918941 | 3739 | if (CONSP (coding_systems)) |
70949dac | 3740 | val = XCAR (coding_systems); |
67918941 | 3741 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3742 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3743 | else |
3744 | val = Qnil; | |
3745 | } | |
e690ca94 | 3746 | p->decode_coding_system = val; |
0fa1789e | 3747 | |
e690ca94 | 3748 | if (!NILP (tem)) |
6b61353c KH |
3749 | { |
3750 | val = XCAR (XCDR (tem)); | |
3751 | if (CONSP (val)) | |
3752 | val = XCDR (val); | |
3753 | } | |
e690ca94 | 3754 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3755 | val = Vcoding_system_for_write; |
4b4deea2 | 3756 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3757 | val = Qnil; |
3758 | else | |
3759 | { | |
3760 | if (EQ (coding_systems, Qt)) | |
3761 | { | |
991234f0 KS |
3762 | if (NILP (host) || NILP (service)) |
3763 | coding_systems = Qnil; | |
3764 | else | |
3765 | { | |
3766 | args[0] = Qopen_network_stream, args[1] = name, | |
3767 | args[2] = buffer, args[3] = host, args[4] = service; | |
3768 | GCPRO1 (proc); | |
3769 | coding_systems = Ffind_operation_coding_system (5, args); | |
3770 | UNGCPRO; | |
3771 | } | |
67918941 RS |
3772 | } |
3773 | if (CONSP (coding_systems)) | |
70949dac | 3774 | val = XCDR (coding_systems); |
67918941 | 3775 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3776 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3777 | else |
3778 | val = Qnil; | |
3779 | } | |
e690ca94 | 3780 | p->encode_coding_system = val; |
67918941 | 3781 | } |
03f04413 | 3782 | setup_process_coding_systems (proc); |
0fa1789e | 3783 | |
cbe81f1d | 3784 | p->decoding_buf = empty_unibyte_string; |
60f0fb11 | 3785 | p->decoding_carryover = 0; |
cbe81f1d | 3786 | p->encoding_buf = empty_unibyte_string; |
0fa1789e | 3787 | |
e690ca94 | 3788 | p->inherit_coding_system_flag |
e6fca843 | 3789 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3790 | |
d0d6b7c5 JB |
3791 | UNGCPRO; |
3792 | return proc; | |
3793 | } | |
d0d6b7c5 | 3794 | |
6b61353c | 3795 | \f |
d23d8608 | 3796 | #if defined(HAVE_NET_IF_H) |
6b61353c KH |
3797 | |
3798 | #ifdef SIOCGIFCONF | |
3799 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3800 | doc: /* Return an alist of all network interfaces and their network address. | |
3801 | Each element is a cons, the car of which is a string containing the | |
3802 | interface name, and the cdr is the network address in internal | |
3803 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3804 | (void) |
6b61353c KH |
3805 | { |
3806 | struct ifconf ifconf; | |
3807 | struct ifreq *ifreqs = NULL; | |
3808 | int ifaces = 0; | |
3809 | int buf_size, s; | |
3810 | Lisp_Object res; | |
3811 | ||
3812 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3813 | if (s < 0) | |
3814 | return Qnil; | |
3815 | ||
3816 | again: | |
3817 | ifaces += 25; | |
ed3751c8 | 3818 | buf_size = ifaces * sizeof (ifreqs[0]); |
6b61353c KH |
3819 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); |
3820 | if (!ifreqs) | |
3821 | { | |
3822 | close (s); | |
3823 | return Qnil; | |
3824 | } | |
3825 | ||
3826 | ifconf.ifc_len = buf_size; | |
3827 | ifconf.ifc_req = ifreqs; | |
3828 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3829 | { | |
3830 | close (s); | |
3831 | return Qnil; | |
3832 | } | |
3833 | ||
3834 | if (ifconf.ifc_len == buf_size) | |
3835 | goto again; | |
3836 | ||
3837 | close (s); | |
3838 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3839 | ||
3840 | res = Qnil; | |
3841 | while (--ifaces >= 0) | |
3842 | { | |
3843 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3844 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3845 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3846 | continue; | |
72af86bd | 3847 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3848 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3849 | res = Fcons (Fcons (build_string (namebuf), | |
3850 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3851 | sizeof (struct sockaddr))), | |
3852 | res); | |
3853 | } | |
3854 | ||
3855 | return res; | |
3856 | } | |
3857 | #endif /* SIOCGIFCONF */ | |
3858 | ||
3859 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3860 | ||
3861 | struct ifflag_def { | |
3862 | int flag_bit; | |
91433552 | 3863 | const char *flag_sym; |
6b61353c KH |
3864 | }; |
3865 | ||
91433552 | 3866 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3867 | #ifdef IFF_UP |
3868 | { IFF_UP, "up" }, | |
3869 | #endif | |
3870 | #ifdef IFF_BROADCAST | |
3871 | { IFF_BROADCAST, "broadcast" }, | |
3872 | #endif | |
3873 | #ifdef IFF_DEBUG | |
3874 | { IFF_DEBUG, "debug" }, | |
3875 | #endif | |
3876 | #ifdef IFF_LOOPBACK | |
3877 | { IFF_LOOPBACK, "loopback" }, | |
3878 | #endif | |
3879 | #ifdef IFF_POINTOPOINT | |
3880 | { IFF_POINTOPOINT, "pointopoint" }, | |
3881 | #endif | |
3882 | #ifdef IFF_RUNNING | |
3883 | { IFF_RUNNING, "running" }, | |
3884 | #endif | |
3885 | #ifdef IFF_NOARP | |
3886 | { IFF_NOARP, "noarp" }, | |
3887 | #endif | |
3888 | #ifdef IFF_PROMISC | |
3889 | { IFF_PROMISC, "promisc" }, | |
3890 | #endif | |
3891 | #ifdef IFF_NOTRAILERS | |
3892 | { IFF_NOTRAILERS, "notrailers" }, | |
3893 | #endif | |
3894 | #ifdef IFF_ALLMULTI | |
3895 | { IFF_ALLMULTI, "allmulti" }, | |
3896 | #endif | |
3897 | #ifdef IFF_MASTER | |
3898 | { IFF_MASTER, "master" }, | |
3899 | #endif | |
3900 | #ifdef IFF_SLAVE | |
3901 | { IFF_SLAVE, "slave" }, | |
3902 | #endif | |
3903 | #ifdef IFF_MULTICAST | |
3904 | { IFF_MULTICAST, "multicast" }, | |
3905 | #endif | |
3906 | #ifdef IFF_PORTSEL | |
3907 | { IFF_PORTSEL, "portsel" }, | |
3908 | #endif | |
3909 | #ifdef IFF_AUTOMEDIA | |
3910 | { IFF_AUTOMEDIA, "automedia" }, | |
3911 | #endif | |
3912 | #ifdef IFF_DYNAMIC | |
3913 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3914 | #endif |
2026418c YM |
3915 | #ifdef IFF_OACTIVE |
3916 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3917 | #endif |
3918 | #ifdef IFF_SIMPLEX | |
3919 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3920 | #endif | |
3921 | #ifdef IFF_LINK0 | |
3922 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3923 | #endif | |
3924 | #ifdef IFF_LINK1 | |
3925 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3926 | #endif | |
3927 | #ifdef IFF_LINK2 | |
3928 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3929 | #endif |
3930 | { 0, 0 } | |
3931 | }; | |
3932 | ||
3933 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3934 | doc: /* Return information about network interface named IFNAME. | |
3935 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3936 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3937 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3938 | FLAGS is the current flags of the interface. */) | |
5842a27b | 3939 | (Lisp_Object ifname) |
6b61353c KH |
3940 | { |
3941 | struct ifreq rq; | |
3942 | Lisp_Object res = Qnil; | |
3943 | Lisp_Object elt; | |
3944 | int s; | |
3945 | int any = 0; | |
3946 | ||
3947 | CHECK_STRING (ifname); | |
3948 | ||
72af86bd | 3949 | memset (rq.ifr_name, 0, sizeof rq.ifr_name); |
6b61353c KH |
3950 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); |
3951 | ||
3952 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3953 | if (s < 0) | |
3954 | return Qnil; | |
3955 | ||
3956 | elt = Qnil; | |
3957 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) | |
3958 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) | |
3959 | { | |
3960 | int flags = rq.ifr_flags; | |
91433552 | 3961 | const struct ifflag_def *fp; |
6b61353c KH |
3962 | int fnum; |
3963 | ||
3964 | any++; | |
82a80058 | 3965 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3966 | { |
3967 | if (flags & fp->flag_bit) | |
3968 | { | |
3969 | elt = Fcons (intern (fp->flag_sym), elt); | |
3970 | flags -= fp->flag_bit; | |
3971 | } | |
3972 | } | |
3973 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3974 | { | |
3975 | if (flags & (1 << fnum)) | |
3976 | { | |
3977 | elt = Fcons (make_number (fnum), elt); | |
3978 | } | |
3979 | } | |
3980 | } | |
3981 | #endif | |
3982 | res = Fcons (elt, res); | |
3983 | ||
3984 | elt = Qnil; | |
3985 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) | |
3986 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) | |
3987 | { | |
3988 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3989 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3990 | int n; | |
3991 | ||
3992 | any++; | |
3993 | for (n = 0; n < 6; n++) | |
3994 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3995 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3996 | } | |
3997 | #endif | |
3998 | res = Fcons (elt, res); | |
3999 | ||
4000 | elt = Qnil; | |
2026418c | 4001 | #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
4002 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
4003 | { | |
4004 | any++; | |
2026418c | 4005 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 4006 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
4007 | #else |
4008 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
4009 | #endif | |
6b61353c KH |
4010 | } |
4011 | #endif | |
4012 | res = Fcons (elt, res); | |
4013 | ||
4014 | elt = Qnil; | |
4015 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) | |
4016 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) | |
4017 | { | |
4018 | any++; | |
4019 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
4020 | } | |
4021 | #endif | |
4022 | res = Fcons (elt, res); | |
4023 | ||
4024 | elt = Qnil; | |
4025 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) | |
4026 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) | |
4027 | { | |
4028 | any++; | |
4029 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
4030 | } | |
4031 | #endif | |
4032 | res = Fcons (elt, res); | |
4033 | ||
4034 | close (s); | |
4035 | ||
4036 | return any ? res : Qnil; | |
4037 | } | |
4038 | #endif | |
d23d8608 | 4039 | #endif /* defined(HAVE_NET_IF_H) */ |
6b61353c | 4040 | |
04391069 RS |
4041 | /* Turn off input and output for process PROC. */ |
4042 | ||
6b53bb85 | 4043 | void |
d3da34e0 | 4044 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
4045 | { |
4046 | register int inchannel, outchannel; | |
4047 | register struct Lisp_Process *p = XPROCESS (proc); | |
4048 | ||
60f0fb11 SM |
4049 | inchannel = p->infd; |
4050 | outchannel = p->outfd; | |
d0d6b7c5 | 4051 | |
6b61353c | 4052 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 4053 | if (p->read_output_delay > 0) |
6b61353c KH |
4054 | { |
4055 | if (--process_output_delay_count < 0) | |
4056 | process_output_delay_count = 0; | |
60f0fb11 SM |
4057 | p->read_output_delay = 0; |
4058 | p->read_output_skip = 0; | |
6b61353c KH |
4059 | } |
4060 | #endif | |
f3d9532b | 4061 | |
a9f2c884 | 4062 | if (inchannel >= 0) |
d0d6b7c5 JB |
4063 | { |
4064 | /* Beware SIGCHLD hereabouts. */ | |
4065 | flush_pending_output (inchannel); | |
68c45bf0 | 4066 | emacs_close (inchannel); |
a9f2c884 | 4067 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 4068 | emacs_close (outchannel); |
d0d6b7c5 | 4069 | |
60f0fb11 SM |
4070 | p->infd = -1; |
4071 | p->outfd = -1; | |
e690ca94 KS |
4072 | #ifdef DATAGRAM_SOCKETS |
4073 | if (DATAGRAM_CHAN_P (inchannel)) | |
4074 | { | |
4075 | xfree (datagram_address[inchannel].sa); | |
4076 | datagram_address[inchannel].sa = 0; | |
4077 | datagram_address[inchannel].len = 0; | |
4078 | } | |
4079 | #endif | |
d0d6b7c5 JB |
4080 | chan_process[inchannel] = Qnil; |
4081 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 4082 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 4083 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4084 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
4085 | { | |
4086 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 4087 | FD_CLR (inchannel, &write_mask); |
dd2a17ab KS |
4088 | if (--num_pending_connects < 0) |
4089 | abort (); | |
4090 | } | |
bad49fc7 | 4091 | #endif |
7d0e672e RS |
4092 | if (inchannel == max_process_desc) |
4093 | { | |
4094 | int i; | |
4095 | /* We just closed the highest-numbered process input descriptor, | |
4096 | so recompute the highest-numbered one now. */ | |
4097 | max_process_desc = 0; | |
4098 | for (i = 0; i < MAXDESC; i++) | |
4099 | if (!NILP (chan_process[i])) | |
4100 | max_process_desc = i; | |
4101 | } | |
d0d6b7c5 JB |
4102 | } |
4103 | } | |
4104 | ||
d0d6b7c5 JB |
4105 | \f |
4106 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 4107 | 0, 4, 0, |
fdb82f93 PJ |
4108 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
4109 | It is read into the process' buffers or given to their filter functions. | |
4110 | Non-nil arg PROCESS means do not return until some output has been received | |
4111 | from PROCESS. | |
5088da42 | 4112 | |
2a7bb882 MR |
4113 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
4114 | and milliseconds to wait; return after that much time whether or not | |
4115 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 4116 | it specifies a fractional number of seconds to wait. |
891bd142 | 4117 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 4118 | |
107ed38d KS |
4119 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
4120 | from PROCESS, suspending reading output from other processes. | |
4121 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 4122 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 4123 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 4124 | { |
5088da42 | 4125 | int secs, usecs = 0; |
d0d6b7c5 | 4126 | |
0748d150 | 4127 | if (! NILP (process)) |
b7826503 | 4128 | CHECK_PROCESS (process); |
107ed38d KS |
4129 | else |
4130 | just_this_one = Qnil; | |
0748d150 | 4131 | |
891bd142 SM |
4132 | if (!NILP (millisec)) |
4133 | { /* Obsolete calling convention using integers rather than floats. */ | |
4134 | CHECK_NUMBER (millisec); | |
4135 | if (NILP (seconds)) | |
4136 | seconds = make_float (XINT (millisec) / 1000.0); | |
4137 | else | |
4138 | { | |
4139 | CHECK_NUMBER (seconds); | |
4140 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
4141 | } | |
4142 | } | |
4143 | ||
5088da42 | 4144 | if (!NILP (seconds)) |
d0d6b7c5 | 4145 | { |
5088da42 KS |
4146 | if (INTEGERP (seconds)) |
4147 | secs = XINT (seconds); | |
4148 | else if (FLOATP (seconds)) | |
4149 | { | |
4150 | double timeout = XFLOAT_DATA (seconds); | |
4151 | secs = (int) timeout; | |
4152 | usecs = (int) ((timeout - (double) secs) * 1000000); | |
4153 | } | |
4154 | else | |
4155 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 4156 | |
5088da42 KS |
4157 | if (secs < 0 || (secs == 0 && usecs == 0)) |
4158 | secs = -1, usecs = 0; | |
d0d6b7c5 JB |
4159 | } |
4160 | else | |
5088da42 | 4161 | secs = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
4162 | |
4163 | return | |
5088da42 | 4164 | (wait_reading_process_output (secs, usecs, 0, 0, |
214d6069 KS |
4165 | Qnil, |
4166 | !NILP (process) ? XPROCESS (process) : NULL, | |
4167 | NILP (just_this_one) ? 0 : | |
4168 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
4169 | ? Qt : Qnil); |
4170 | } | |
4171 | ||
e690ca94 KS |
4172 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4173 | ||
4174 | static int connect_counter = 0; | |
4175 | ||
4176 | static void | |
d3da34e0 | 4177 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4178 | { |
4179 | Lisp_Object proc, caller, name, buffer; | |
4180 | Lisp_Object contact, host, service; | |
4181 | struct Lisp_Process *ps= XPROCESS (server); | |
4182 | struct Lisp_Process *p; | |
4183 | int s; | |
4184 | union u_sockaddr { | |
4185 | struct sockaddr sa; | |
4186 | struct sockaddr_in in; | |
e1652a86 KS |
4187 | #ifdef AF_INET6 |
4188 | struct sockaddr_in6 in6; | |
4189 | #endif | |
e690ca94 KS |
4190 | #ifdef HAVE_LOCAL_SOCKETS |
4191 | struct sockaddr_un un; | |
4192 | #endif | |
4193 | } saddr; | |
4194 | int len = sizeof saddr; | |
4195 | ||
4196 | s = accept (channel, &saddr.sa, &len); | |
4197 | ||
4198 | if (s < 0) | |
4199 | { | |
4200 | int code = errno; | |
4201 | ||
4202 | if (code == EAGAIN) | |
4203 | return; | |
4204 | #ifdef EWOULDBLOCK | |
4205 | if (code == EWOULDBLOCK) | |
4206 | return; | |
4207 | #endif | |
4208 | ||
4209 | if (!NILP (ps->log)) | |
4210 | call3 (ps->log, server, Qnil, | |
4211 | concat3 (build_string ("accept failed with code"), | |
4212 | Fnumber_to_string (make_number (code)), | |
4213 | build_string ("\n"))); | |
4214 | return; | |
4215 | } | |
4216 | ||
4217 | connect_counter++; | |
4218 | ||
4219 | /* Setup a new process to handle the connection. */ | |
4220 | ||
4221 | /* Generate a unique identification of the caller, and build contact | |
4222 | information for this process. */ | |
4223 | host = Qt; | |
4224 | service = Qnil; | |
4225 | switch (saddr.sa.sa_family) | |
4226 | { | |
4227 | case AF_INET: | |
4228 | { | |
4229 | Lisp_Object args[5]; | |
4230 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4231 | args[0] = build_string ("%d.%d.%d.%d"); | |
4232 | args[1] = make_number (*ip++); | |
4233 | args[2] = make_number (*ip++); | |
4234 | args[3] = make_number (*ip++); | |
4235 | args[4] = make_number (*ip++); | |
4236 | host = Fformat (5, args); | |
4237 | service = make_number (ntohs (saddr.in.sin_port)); | |
4238 | ||
4239 | args[0] = build_string (" <%s:%d>"); | |
4240 | args[1] = host; | |
4241 | args[2] = service; | |
4242 | caller = Fformat (3, args); | |
4243 | } | |
4244 | break; | |
4245 | ||
e1652a86 KS |
4246 | #ifdef AF_INET6 |
4247 | case AF_INET6: | |
4248 | { | |
4249 | Lisp_Object args[9]; | |
4250 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4251 | int i; | |
4252 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4253 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4254 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4255 | host = Fformat (9, args); |
4256 | service = make_number (ntohs (saddr.in.sin_port)); | |
4257 | ||
4258 | args[0] = build_string (" <[%s]:%d>"); | |
4259 | args[1] = host; | |
4260 | args[2] = service; | |
4261 | caller = Fformat (3, args); | |
4262 | } | |
4263 | break; | |
4264 | #endif | |
4265 | ||
e690ca94 KS |
4266 | #ifdef HAVE_LOCAL_SOCKETS |
4267 | case AF_LOCAL: | |
4268 | #endif | |
4269 | default: | |
4270 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4271 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4272 | break; |
4273 | } | |
4274 | ||
4275 | /* Create a new buffer name for this process if it doesn't have a | |
4276 | filter. The new buffer name is based on the buffer name or | |
4277 | process name of the server process concatenated with the caller | |
4278 | identification. */ | |
4279 | ||
4280 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4281 | buffer = Qnil; | |
4282 | else | |
4283 | { | |
4284 | buffer = ps->buffer; | |
4285 | if (!NILP (buffer)) | |
4286 | buffer = Fbuffer_name (buffer); | |
4287 | else | |
4288 | buffer = ps->name; | |
4289 | if (!NILP (buffer)) | |
4290 | { | |
4291 | buffer = concat2 (buffer, caller); | |
4292 | buffer = Fget_buffer_create (buffer); | |
4293 | } | |
4294 | } | |
4295 | ||
4296 | /* Generate a unique name for the new server process. Combine the | |
4297 | server process name with the caller identification. */ | |
4298 | ||
4299 | name = concat2 (ps->name, caller); | |
4300 | proc = make_process (name); | |
4301 | ||
4302 | chan_process[s] = proc; | |
4303 | ||
4304 | #ifdef O_NONBLOCK | |
4305 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4306 | #else | |
4307 | #ifdef O_NDELAY | |
4308 | fcntl (s, F_SETFL, O_NDELAY); | |
4309 | #endif | |
4310 | #endif | |
4311 | ||
4312 | p = XPROCESS (proc); | |
4313 | ||
4314 | /* Build new contact information for this setup. */ | |
4315 | contact = Fcopy_sequence (ps->childp); | |
4316 | contact = Fplist_put (contact, QCserver, Qnil); | |
4317 | contact = Fplist_put (contact, QChost, host); | |
4318 | if (!NILP (service)) | |
4319 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4320 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4321 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4322 | #ifdef HAVE_GETSOCKNAME | |
4323 | len = sizeof saddr; | |
2185db04 | 4324 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4325 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4326 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4327 | #endif | |
4328 | ||
4329 | p->childp = contact; | |
faa7db08 | 4330 | p->plist = Fcopy_sequence (ps->plist); |
d888760c | 4331 | p->type = Qnetwork; |
ac4a7584 | 4332 | |
e690ca94 KS |
4333 | p->buffer = buffer; |
4334 | p->sentinel = ps->sentinel; | |
4335 | p->filter = ps->filter; | |
4336 | p->command = Qnil; | |
6bfd98e7 | 4337 | p->pid = 0; |
60f0fb11 SM |
4338 | p->infd = s; |
4339 | p->outfd = s; | |
e690ca94 KS |
4340 | p->status = Qrun; |
4341 | ||
4342 | /* Client processes for accepted connections are not stopped initially. */ | |
4343 | if (!EQ (p->filter, Qt)) | |
4344 | { | |
4345 | FD_SET (s, &input_wait_mask); | |
4346 | FD_SET (s, &non_keyboard_wait_mask); | |
4347 | } | |
4348 | ||
4349 | if (s > max_process_desc) | |
4350 | max_process_desc = s; | |
4351 | ||
177c0ea7 | 4352 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4353 | This seems to be the proper thing to do, as the coding system |
4354 | of the new process should reflect the settings at the time the | |
4355 | server socket was opened; not the current settings. */ | |
4356 | ||
4357 | p->decode_coding_system = ps->decode_coding_system; | |
4358 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4359 | setup_process_coding_systems (proc); |
e690ca94 | 4360 | |
cbe81f1d | 4361 | p->decoding_buf = empty_unibyte_string; |
60f0fb11 | 4362 | p->decoding_carryover = 0; |
cbe81f1d | 4363 | p->encoding_buf = empty_unibyte_string; |
e690ca94 KS |
4364 | |
4365 | p->inherit_coding_system_flag | |
60f0fb11 | 4366 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 KS |
4367 | |
4368 | if (!NILP (ps->log)) | |
4369 | call3 (ps->log, server, proc, | |
4370 | concat3 (build_string ("accept from "), | |
4371 | (STRINGP (host) ? host : build_string ("-")), | |
4372 | build_string ("\n"))); | |
4373 | ||
bed9664a | 4374 | if (!NILP (p->sentinel)) |
177c0ea7 | 4375 | exec_sentinel (proc, |
e690ca94 KS |
4376 | concat3 (build_string ("open from "), |
4377 | (STRINGP (host) ? host : build_string ("-")), | |
4378 | build_string ("\n"))); | |
4379 | } | |
4380 | ||
d0d6b7c5 JB |
4381 | /* This variable is different from waiting_for_input in keyboard.c. |
4382 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4383 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4384 | for user-input when that process-filter was called. |
4385 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4386 | lisp code is being evalled. |
4387 | This is also used in record_asynch_buffer_change. | |
4388 | For that purpose, this must be 0 | |
214d6069 | 4389 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4390 | static int waiting_for_user_input_p; |
4391 | ||
2beb96f9 | 4392 | static Lisp_Object |
d3da34e0 | 4393 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4394 | { |
4395 | waiting_for_user_input_p = XINT (data); | |
4396 | return Qnil; | |
4397 | } | |
4398 | ||
c573ae8e | 4399 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4400 | static void |
d3da34e0 | 4401 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4402 | { |
4403 | } | |
4404 | ||
e1e541bd | 4405 | /* Use a wrapper around select to work around a bug in gdb 5.3. |
96c834b6 | 4406 | Normally, the wrapper is optimized away by inlining. |
e1e541bd KS |
4407 | |
4408 | If emacs is stopped inside select, the gdb backtrace doesn't | |
4409 | show the function which called select, so it is practically | |
4410 | impossible to step through wait_reading_process_output. */ | |
4411 | ||
4412 | #ifndef select | |
4413 | static INLINE int | |
d3da34e0 | 4414 | select_wrapper (int n, fd_set *rfd, fd_set *wfd, fd_set *xfd, struct timeval *tmo) |
e1e541bd KS |
4415 | { |
4416 | return select (n, rfd, wfd, xfd, tmo); | |
4417 | } | |
4418 | #define select select_wrapper | |
4419 | #endif | |
4420 | ||
d0d6b7c5 JB |
4421 | /* Read and dispose of subprocess output while waiting for timeout to |
4422 | elapse and/or keyboard input to be available. | |
4423 | ||
de6fd4b9 | 4424 | TIME_LIMIT is: |
d0d6b7c5 JB |
4425 | timeout in seconds, or |
4426 | zero for no limit, or | |
4427 | -1 means gobble data immediately available but don't wait for any. | |
4428 | ||
de6fd4b9 RS |
4429 | MICROSECS is: |
4430 | an additional duration to wait, measured in microseconds. | |
4431 | If this is nonzero and time_limit is 0, then the timeout | |
4432 | consists of MICROSECS only. | |
6e4f3667 | 4433 | |
de6fd4b9 | 4434 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4435 | 0 to ignore keyboard input, or |
4436 | 1 to return when input is available, or | |
84aa3ace | 4437 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4438 | the quit handler, or |
d0d6b7c5 | 4439 | |
de6fd4b9 | 4440 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4441 | output that arrives. |
d0d6b7c5 | 4442 | |
b89a415a KS |
4443 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4444 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4445 | |
b89a415a | 4446 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4447 | process. The return value is true if we read some input from |
b89a415a KS |
4448 | that process. |
4449 | ||
4450 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4451 | (suspending output from other processes). A negative value | |
4452 | means don't run any timers either. | |
4453 | ||
e0f24100 | 4454 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4455 | received input from that process before the timeout elapsed. |
e0f24100 | 4456 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4457 | |
dfcf069d | 4458 | int |
d5a3eaaf AS |
4459 | wait_reading_process_output (int time_limit, int microsecs, int read_kbd, |
4460 | int do_display, | |
4461 | Lisp_Object wait_for_cell, | |
4462 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4463 | { |
41d03b9a | 4464 | register int channel, nfds; |
855448dc | 4465 | SELECT_TYPE Available; |
3fad2ad2 J |
4466 | SELECT_TYPE Writeok; |
4467 | int check_write; | |
bad49fc7 | 4468 | int check_delay, no_avail; |
d0d6b7c5 JB |
4469 | int xerrno; |
4470 | Lisp_Object proc; | |
41d03b9a | 4471 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4472 | int wait_channel = -1; |
d0d6b7c5 | 4473 | int got_some_input = 0; |
2beb96f9 | 4474 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4475 | |
4476 | FD_ZERO (&Available); | |
3fad2ad2 | 4477 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4478 | |
283357a7 | 4479 | if (time_limit == 0 && microsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
2b0a91e7 SM |
4480 | && !(CONSP (wait_proc->status) && EQ (XCAR (wait_proc->status), Qexit))) |
4481 | message ("Blocking call to accept-process-output with quit inhibited!!"); | |
4482 | ||
b89a415a KS |
4483 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4484 | if (wait_proc != NULL) | |
60f0fb11 | 4485 | wait_channel = wait_proc->infd; |
84aa3ace | 4486 | |
2beb96f9 KS |
4487 | record_unwind_protect (wait_reading_process_output_unwind, |
4488 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4489 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4490 | |
4491 | /* Since we may need to wait several times, | |
4492 | compute the absolute time to return at. */ | |
4493 | if (time_limit || microsecs) | |
4494 | { | |
4495 | EMACS_GET_TIME (end_time); | |
4496 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4497 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4498 | } | |
4499 | ||
d0d6b7c5 JB |
4500 | while (1) |
4501 | { | |
c0239a0b RS |
4502 | int timeout_reduced_for_timers = 0; |
4503 | ||
d0d6b7c5 JB |
4504 | /* If calling from keyboard input, do not quit |
4505 | since we want to return C-g as an input character. | |
4506 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4507 | if (read_kbd >= 0) |
d0d6b7c5 | 4508 | QUIT; |
6b61353c | 4509 | #ifdef SYNC_INPUT |
ef5eb925 | 4510 | else |
c3eff1b0 | 4511 | process_pending_signals (); |
6b61353c | 4512 | #endif |
d0d6b7c5 | 4513 | |
889255b4 | 4514 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4515 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4516 | break; |
4517 | ||
d0d6b7c5 JB |
4518 | /* Compute time from now till when time limit is up */ |
4519 | /* Exit if already run out */ | |
4520 | if (time_limit == -1) | |
4521 | { | |
4522 | /* -1 specified for timeout means | |
4523 | gobble output available now | |
4524 | but don't wait at all. */ | |
4525 | ||
4526 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4527 | } | |
4528 | else if (time_limit || microsecs) | |
4529 | { | |
4530 | EMACS_GET_TIME (timeout); | |
4531 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4532 | if (EMACS_TIME_NEG_P (timeout)) | |
4533 | break; | |
4534 | } | |
4535 | else | |
4536 | { | |
4537 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4538 | } | |
4539 | ||
f854a00b RS |
4540 | /* Normally we run timers here. |
4541 | But not if wait_for_cell; in those cases, | |
4542 | the wait is supposed to be short, | |
4543 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4544 | if (NILP (wait_for_cell) |
b89a415a | 4545 | && just_wait_proc >= 0) |
fb4c3627 | 4546 | { |
c0239a0b | 4547 | EMACS_TIME timer_delay; |
c573ae8e | 4548 | |
9baacf76 | 4549 | do |
c573ae8e | 4550 | { |
9baacf76 | 4551 | int old_timers_run = timers_run; |
c88164fe | 4552 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4553 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4554 | |
9baacf76 | 4555 | timer_delay = timer_check (1); |
a2fab450 GM |
4556 | |
4557 | /* If a timer has run, this might have changed buffers | |
4558 | an alike. Make read_key_sequence aware of that. */ | |
4559 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4560 | && (old_buffer != current_buffer |
4561 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4562 | && waiting_for_user_input_p == -1) |
4563 | record_asynch_buffer_change (); | |
177c0ea7 | 4564 | |
9baacf76 GM |
4565 | if (timers_run != old_timers_run && do_display) |
4566 | /* We must retry, since a timer may have requeued itself | |
4567 | and that could alter the time_delay. */ | |
3007ebfb | 4568 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4569 | else |
4570 | break; | |
c573ae8e | 4571 | } |
9baacf76 | 4572 | while (!detect_input_pending ()); |
c573ae8e | 4573 | |
69645afc | 4574 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4575 | if (read_kbd != 0 |
69645afc RS |
4576 | && requeued_events_pending_p ()) |
4577 | break; | |
4578 | ||
c0239a0b | 4579 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4580 | { |
4581 | EMACS_TIME difference; | |
4582 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4583 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4584 | { |
4585 | timeout = timer_delay; | |
4586 | timeout_reduced_for_timers = 1; | |
4587 | } | |
fb4c3627 | 4588 | } |
4abca5e7 RS |
4589 | /* If time_limit is -1, we are not going to wait at all. */ |
4590 | else if (time_limit != -1) | |
c573ae8e RS |
4591 | { |
4592 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4593 | wait_reading_process_output_1 (); |
c573ae8e | 4594 | } |
fb4c3627 RS |
4595 | } |
4596 | ||
90ab1a81 JB |
4597 | /* Cause C-g and alarm signals to take immediate action, |
4598 | and cause input available signals to zero out timeout. | |
4599 | ||
4600 | It is important that we do this before checking for process | |
4601 | activity. If we get a SIGCHLD after the explicit checks for | |
4602 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4603 | if (read_kbd < 0) |
90ab1a81 JB |
4604 | set_waiting_for_input (&timeout); |
4605 | ||
6be429b1 JB |
4606 | /* If status of something has changed, and no input is |
4607 | available, notify the user of the change right away. After | |
4608 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4609 | timeout to get our attention. */ |
4610 | if (update_tick != process_tick) | |
6be429b1 | 4611 | { |
bad49fc7 | 4612 | SELECT_TYPE Atemp; |
bad49fc7 | 4613 | SELECT_TYPE Ctemp; |
dd2a17ab | 4614 | |
cb768704 J |
4615 | if (kbd_on_hold_p ()) |
4616 | FD_ZERO (&Atemp); | |
4617 | else | |
4618 | Atemp = input_wait_mask; | |
3fad2ad2 | 4619 | Ctemp = write_mask; |
bad49fc7 | 4620 | |
6be429b1 | 4621 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
3fad2ad2 | 4622 | if ((select (max (max_process_desc, max_input_desc) + 1, |
177c0ea7 | 4623 | &Atemp, |
bad49fc7 | 4624 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4625 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4626 | #else |
4627 | (SELECT_TYPE *)0, | |
4628 | #endif | |
dd2a17ab | 4629 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4630 | <= 0)) |
90ab1a81 JB |
4631 | { |
4632 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4633 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4634 | clear_waiting_for_input (); |
ff6daed3 | 4635 | status_notify (NULL); |
e42bdf01 | 4636 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4637 | } |
6be429b1 JB |
4638 | } |
4639 | ||
dd2a17ab | 4640 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4641 | read whatever data has already been received. */ |
6bfd98e7 | 4642 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4643 | update_status (wait_proc); |
6bfd98e7 | 4644 | if (wait_proc |
dd2a17ab KS |
4645 | && ! EQ (wait_proc->status, Qrun) |
4646 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4647 | { |
215b45e9 | 4648 | int nread, total_nread = 0; |
7ce63188 | 4649 | |
9aa2a7f4 | 4650 | clear_waiting_for_input (); |
7ce63188 RS |
4651 | XSETPROCESS (proc, wait_proc); |
4652 | ||
4653 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4654 | while (wait_proc->infd >= 0) |
215b45e9 | 4655 | { |
60f0fb11 | 4656 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4657 | |
4658 | if (nread == 0) | |
4659 | break; | |
4660 | ||
63136da6 AS |
4661 | if (0 < nread) |
4662 | { | |
891bd142 SM |
4663 | total_nread += nread; |
4664 | got_some_input = 1; | |
4665 | } | |
215b45e9 RS |
4666 | #ifdef EIO |
4667 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4668 | break; |
e1b37c34 GM |
4669 | #endif |
4670 | #ifdef EAGAIN | |
4671 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4672 | break; |
e1b37c34 GM |
4673 | #endif |
4674 | #ifdef EWOULDBLOCK | |
4675 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4676 | break; |
215b45e9 RS |
4677 | #endif |
4678 | } | |
7ce63188 | 4679 | if (total_nread > 0 && do_display) |
3007ebfb | 4680 | redisplay_preserve_echo_area (10); |
7ce63188 | 4681 | |
9aa2a7f4 JB |
4682 | break; |
4683 | } | |
6be429b1 | 4684 | |
d0d6b7c5 JB |
4685 | /* Wait till there is something to do */ |
4686 | ||
b89a415a | 4687 | if (wait_proc && just_wait_proc) |
107ed38d | 4688 | { |
60f0fb11 | 4689 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4690 | break; |
60f0fb11 | 4691 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4692 | check_delay = 0; |
3fad2ad2 | 4693 | check_write = 0; |
107ed38d KS |
4694 | } |
4695 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4696 | { |
4697 | Available = non_process_wait_mask; | |
bad49fc7 | 4698 | check_delay = 0; |
3fad2ad2 | 4699 | check_write = 0; |
dd2a17ab | 4700 | } |
a69281ff | 4701 | else |
dd2a17ab | 4702 | { |
b89a415a | 4703 | if (! read_kbd) |
dd2a17ab KS |
4704 | Available = non_keyboard_wait_mask; |
4705 | else | |
4706 | Available = input_wait_mask; | |
3fad2ad2 | 4707 | Writeok = write_mask; |
82d6e50b J |
4708 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4709 | check_write = 0; | |
4710 | #else | |
3fad2ad2 | 4711 | check_write = 1; |
82d6e50b | 4712 | #endif |
6b61353c | 4713 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4714 | } |
d0d6b7c5 | 4715 | |
ff11dfa1 | 4716 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4717 | redisplay now, before we start to wait. There is a race |
4718 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4719 | and indicates that a frame is trashed, the select may block |
4720 | displaying a trashed screen. */ | |
5164ee8e | 4721 | if (frame_garbaged && do_display) |
7286affd RS |
4722 | { |
4723 | clear_waiting_for_input (); | |
3007ebfb | 4724 | redisplay_preserve_echo_area (11); |
b89a415a | 4725 | if (read_kbd < 0) |
7efe788e | 4726 | set_waiting_for_input (&timeout); |
7286affd | 4727 | } |
ffd56f97 | 4728 | |
dd2a17ab | 4729 | no_avail = 0; |
b89a415a | 4730 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4731 | { |
4732 | nfds = 0; | |
dd2a17ab | 4733 | no_avail = 1; |
0a65b032 RS |
4734 | } |
4735 | else | |
dd2a17ab | 4736 | { |
6b61353c KH |
4737 | |
4738 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4739 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4740 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4741 | read_output_delay, and we are not reading output for a |
4742 | specific wait_channel. It is not executed if | |
4743 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4744 | if (process_output_skip && check_delay > 0) |
4745 | { | |
4746 | int usecs = EMACS_USECS (timeout); | |
4747 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4748 | usecs = READ_OUTPUT_DELAY_MAX; | |
4749 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4750 | { | |
4751 | proc = chan_process[channel]; | |
4752 | if (NILP (proc)) | |
4753 | continue; | |
db853b7a | 4754 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4755 | processes with non-zero read_output_skip. */ |
4756 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4757 | { |
4758 | check_delay--; | |
60f0fb11 | 4759 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4760 | continue; |
4761 | FD_CLR (channel, &Available); | |
60f0fb11 SM |
4762 | XPROCESS (proc)->read_output_skip = 0; |
4763 | if (XPROCESS (proc)->read_output_delay < usecs) | |
4764 | usecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4765 | } |
4766 | } | |
4767 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4768 | process_output_skip = 0; | |
4769 | } | |
4770 | #endif | |
872870b2 JD |
4771 | #if defined (USE_GTK) || defined (HAVE_GCONF) |
4772 | nfds = xg_select | |
4773 | #elif defined (HAVE_NS) | |
63136da6 | 4774 | nfds = ns_select |
edfda783 | 4775 | #else |
63136da6 | 4776 | nfds = select |
edfda783 | 4777 | #endif |
3fad2ad2 J |
4778 | (max (max_process_desc, max_input_desc) + 1, |
4779 | &Available, | |
4780 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
4781 | (SELECT_TYPE *)0, &timeout); | |
dd2a17ab | 4782 | } |
6720a7fb | 4783 | |
d0d6b7c5 JB |
4784 | xerrno = errno; |
4785 | ||
4786 | /* Make C-g and alarm signals set flags again */ | |
4787 | clear_waiting_for_input (); | |
4788 | ||
4789 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4790 | do_pending_window_change (0); |
d0d6b7c5 | 4791 | |
c0239a0b RS |
4792 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4793 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4794 | break; |
4795 | if (nfds < 0) | |
4796 | { | |
4797 | if (xerrno == EINTR) | |
dd2a17ab | 4798 | no_avail = 1; |
d0d6b7c5 JB |
4799 | else if (xerrno == EBADF) |
4800 | { | |
4801 | #ifdef AIX | |
4802 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4803 | the child's closure of the pts gives the parent a SIGHUP, and | |
4804 | the ptc file descriptor is automatically closed, | |
4805 | yielding EBADF here or at select() call above. | |
4806 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4807 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4808 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4809 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4810 | #else |
4811 | abort (); | |
4812 | #endif | |
4813 | } | |
4814 | else | |
68c45bf0 | 4815 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4816 | } |
dd2a17ab KS |
4817 | |
4818 | if (no_avail) | |
4819 | { | |
4820 | FD_ZERO (&Available); | |
3fad2ad2 | 4821 | check_write = 0; |
dd2a17ab KS |
4822 | } |
4823 | ||
5d5beb62 RS |
4824 | #if 0 /* When polling is used, interrupt_input is 0, |
4825 | so get_input_pending should read the input. | |
4826 | So this should not be needed. */ | |
4827 | /* If we are using polling for input, | |
4828 | and we see input available, make it get read now. | |
4829 | Otherwise it might not actually get read for a second. | |
214d6069 | 4830 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4831 | it might never get read at all if we don't spend much time |
214d6069 | 4832 | outside of wait_reading_process_output. */ |
b89a415a | 4833 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4834 | && keyboard_bit_set (&Available) |
4835 | && input_polling_used ()) | |
4836 | kill (getpid (), SIGALRM); | |
4837 | #endif | |
4838 | ||
d0d6b7c5 JB |
4839 | /* Check for keyboard input */ |
4840 | /* If there is any, return immediately | |
4841 | to give it higher priority than subprocesses */ | |
4842 | ||
b89a415a | 4843 | if (read_kbd != 0) |
6ed6233b | 4844 | { |
a2fab450 | 4845 | int old_timers_run = timers_run; |
c88164fe | 4846 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4847 | Lisp_Object old_window = selected_window; |
a2fab450 | 4848 | int leave = 0; |
177c0ea7 | 4849 | |
5d6c2aa3 | 4850 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4851 | { |
4852 | swallow_events (do_display); | |
4853 | if (detect_input_pending_run_timers (do_display)) | |
4854 | leave = 1; | |
4855 | } | |
6ed6233b | 4856 | |
a2fab450 GM |
4857 | /* If a timer has run, this might have changed buffers |
4858 | an alike. Make read_key_sequence aware of that. */ | |
4859 | if (timers_run != old_timers_run | |
c88164fe | 4860 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4861 | && (old_buffer != current_buffer |
4862 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4863 | record_asynch_buffer_change (); |
4864 | ||
4865 | if (leave) | |
4866 | break; | |
177c0ea7 JB |
4867 | } |
4868 | ||
69645afc | 4869 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4870 | if (read_kbd != 0 |
69645afc RS |
4871 | && requeued_events_pending_p ()) |
4872 | break; | |
4873 | ||
77e1b3d4 RS |
4874 | /* If we are not checking for keyboard input now, |
4875 | do process events (but don't run any timers). | |
4876 | This is so that X events will be processed. | |
0c9960e9 | 4877 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4878 | That would causes delays in pasting selections, for example. |
4879 | ||
4880 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4881 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4882 | { |
4883 | swallow_events (do_display); | |
0c9960e9 | 4884 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4885 | if (detect_input_pending ()) |
4886 | break; | |
5d5beb62 | 4887 | #endif |
0c9960e9 | 4888 | } |
f854a00b | 4889 | |
84aa3ace | 4890 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4891 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4892 | break; |
4893 | ||
4746118a | 4894 | #ifdef SIGIO |
5d5beb62 | 4895 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4896 | go read it. This can happen with X on BSD after logging out. |
4897 | In that case, there really is no input and no SIGIO, | |
4898 | but select says there is input. */ | |
4899 | ||
b89a415a | 4900 | if (read_kbd && interrupt_input |
2601f59e | 4901 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4902 | kill (getpid (), SIGIO); |
4746118a | 4903 | #endif |
d0d6b7c5 | 4904 | |
d0d6b7c5 JB |
4905 | if (! wait_proc) |
4906 | got_some_input |= nfds > 0; | |
4907 | ||
32676c08 JB |
4908 | /* If checking input just got us a size-change event from X, |
4909 | obey it now if we should. */ | |
b89a415a | 4910 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4911 | do_pending_window_change (0); |
32676c08 | 4912 | |
a9f2c884 | 4913 | /* Check for data from a process. */ |
dd2a17ab KS |
4914 | if (no_avail || nfds == 0) |
4915 | continue; | |
4916 | ||
3fad2ad2 J |
4917 | for (channel = 0; channel <= max_input_desc; ++channel) |
4918 | { | |
4919 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
4920 | if (FD_ISSET (channel, &Available) | |
4921 | && d->func != 0 | |
4922 | && (d->condition & FOR_READ) != 0) | |
4923 | d->func (channel, d->data, 1); | |
4924 | if (FD_ISSET (channel, &write_mask) | |
4925 | && d->func != 0 | |
4926 | && (d->condition & FOR_WRITE) != 0) | |
4927 | d->func (channel, d->data, 0); | |
4928 | } | |
4929 | ||
a9f2c884 RS |
4930 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4931 | but this is safer in the short run. */ | |
a69281ff | 4932 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4933 | { |
a69281ff | 4934 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4935 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4936 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4937 | { |
4938 | int nread; | |
4939 | ||
4940 | /* If waiting for this channel, arrange to return as | |
4941 | soon as no more input to be processed. No more | |
4942 | waiting. */ | |
4943 | if (wait_channel == channel) | |
4944 | { | |
a9f2c884 | 4945 | wait_channel = -1; |
d0d6b7c5 JB |
4946 | time_limit = -1; |
4947 | got_some_input = 1; | |
4948 | } | |
4949 | proc = chan_process[channel]; | |
4950 | if (NILP (proc)) | |
4951 | continue; | |
4952 | ||
e690ca94 KS |
4953 | /* If this is a server stream socket, accept connection. */ |
4954 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4955 | { | |
4956 | server_accept_connection (proc, channel); | |
4957 | continue; | |
4958 | } | |
4959 | ||
d0d6b7c5 JB |
4960 | /* Read data from the process, starting with our |
4961 | buffered-ahead character if we have one. */ | |
4962 | ||
4963 | nread = read_process_output (proc, channel); | |
4964 | if (nread > 0) | |
4965 | { | |
4966 | /* Since read_process_output can run a filter, | |
4967 | which can call accept-process-output, | |
4968 | don't try to read from any other processes | |
4969 | before doing the select again. */ | |
4970 | FD_ZERO (&Available); | |
4971 | ||
4972 | if (do_display) | |
3007ebfb | 4973 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4974 | } |
4975 | #ifdef EWOULDBLOCK | |
4976 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4977 | ; | |
0b75e9a4 | 4978 | #endif |
89d7280d RS |
4979 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4980 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4981 | #ifdef O_NONBLOCK |
4982 | else if (nread == -1 && errno == EAGAIN) | |
4983 | ; | |
4984 | #else | |
4985 | #ifdef O_NDELAY | |
4986 | else if (nread == -1 && errno == EAGAIN) | |
4987 | ; | |
4988 | /* Note that we cannot distinguish between no input | |
4989 | available now and a closed pipe. | |
4990 | With luck, a closed pipe will be accompanied by | |
4991 | subprocess termination and SIGCHLD. */ | |
d888760c | 4992 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4993 | ; |
4740825c KS |
4994 | #endif /* O_NDELAY */ |
4995 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4996 | #ifdef HAVE_PTYS |
4997 | /* On some OSs with ptys, when the process on one end of | |
4998 | a pty exits, the other end gets an error reading with | |
4999 | errno = EIO instead of getting an EOF (0 bytes read). | |
5000 | Therefore, if we get an error reading and errno = | |
5001 | EIO, just continue, because the child process has | |
5002 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
5003 | get a SIGCHLD). |
5004 | ||
5005 | However, it has been known to happen that the SIGCHLD | |
4740825c | 5006 | got lost. So raise the signal again just in case. |
5651af6d | 5007 | It can't hurt. */ |
d0d6b7c5 | 5008 | else if (nread == -1 && errno == EIO) |
4740825c | 5009 | { |
a70d5371 | 5010 | /* Clear the descriptor now, so we only raise the |
42371deb | 5011 | signal once. Don't do this if `process' is only |
a70d5371 NR |
5012 | a pty. */ |
5013 | if (XPROCESS (proc)->pid != -2) | |
5014 | { | |
5015 | FD_CLR (channel, &input_wait_mask); | |
5016 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4740825c | 5017 | |
a70d5371 NR |
5018 | kill (getpid (), SIGCHLD); |
5019 | } | |
4740825c KS |
5020 | } |
5021 | #endif /* HAVE_PTYS */ | |
ffd56f97 JB |
5022 | /* If we can detect process termination, don't consider the process |
5023 | gone just because its pipe is closed. */ | |
d0d6b7c5 | 5024 | #ifdef SIGCHLD |
d888760c | 5025 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
5026 | ; |
5027 | #endif | |
5028 | else | |
5029 | { | |
5030 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 5031 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 5032 | deactivate_process (proc); |
6bfd98e7 | 5033 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 JB |
5034 | update_status (XPROCESS (proc)); |
5035 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
5036 | XPROCESS (proc)->status | |
5037 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5038 | } | |
5039 | } | |
177c0ea7 | 5040 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 5041 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 5042 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
5043 | { |
5044 | struct Lisp_Process *p; | |
dd2a17ab KS |
5045 | |
5046 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 5047 | FD_CLR (channel, &write_mask); |
dd2a17ab KS |
5048 | if (--num_pending_connects < 0) |
5049 | abort (); | |
5050 | ||
5051 | proc = chan_process[channel]; | |
5052 | if (NILP (proc)) | |
5053 | continue; | |
5054 | ||
5055 | p = XPROCESS (proc); | |
5056 | ||
5057 | #ifdef GNU_LINUX | |
5058 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 5059 | So only use it on systems where it is known to work. */ |
dd2a17ab | 5060 | { |
ed3751c8 JB |
5061 | int xlen = sizeof (xerrno); |
5062 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) | |
dd2a17ab KS |
5063 | xerrno = errno; |
5064 | } | |
5065 | #else | |
44c887be PJ |
5066 | { |
5067 | struct sockaddr pname; | |
ed3751c8 | 5068 | int pnamelen = sizeof (pname); |
44c887be PJ |
5069 | |
5070 | /* If connection failed, getpeername will fail. */ | |
5071 | xerrno = 0; | |
ed3751c8 | 5072 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
5073 | { |
5074 | /* Obtain connect failure code through error slippage. */ | |
5075 | char dummy; | |
dd2a17ab | 5076 | xerrno = errno; |
ed3751c8 | 5077 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
5078 | xerrno = errno; |
5079 | } | |
5080 | } | |
dd2a17ab KS |
5081 | #endif |
5082 | if (xerrno) | |
5083 | { | |
60f0fb11 | 5084 | p->tick = ++process_tick; |
dd2a17ab KS |
5085 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); |
5086 | deactivate_process (proc); | |
5087 | } | |
5088 | else | |
5089 | { | |
5090 | p->status = Qrun; | |
5091 | /* Execute the sentinel here. If we had relied on | |
5092 | status_notify to do it later, it will read input | |
5093 | from the process before calling the sentinel. */ | |
5094 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 5095 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 5096 | { |
60f0fb11 SM |
5097 | FD_SET (p->infd, &input_wait_mask); |
5098 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
5099 | } |
5100 | } | |
5101 | } | |
5102 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
5103 | } /* end for each file descriptor */ |
5104 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 5105 | |
2beb96f9 | 5106 | unbind_to (count, Qnil); |
d430ee71 | 5107 | |
ffd56f97 JB |
5108 | /* If calling from keyboard input, do not quit |
5109 | since we want to return C-g as an input character. | |
5110 | Otherwise, do pending quit if requested. */ | |
b89a415a | 5111 | if (read_kbd >= 0) |
ffd56f97 JB |
5112 | { |
5113 | /* Prevent input_pending from remaining set if we quit. */ | |
5114 | clear_input_pending (); | |
5115 | QUIT; | |
5116 | } | |
efa2a55c | 5117 | |
d0d6b7c5 JB |
5118 | return got_some_input; |
5119 | } | |
5120 | \f | |
3b9a3dfa RS |
5121 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
5122 | ||
5123 | static Lisp_Object | |
d3da34e0 | 5124 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5125 | { |
70949dac | 5126 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5127 | } |
5128 | ||
5129 | static Lisp_Object | |
d3da34e0 | 5130 | read_process_output_error_handler (Lisp_Object error) |
3b9a3dfa RS |
5131 | { |
5132 | cmd_error_internal (error, "error in process filter: "); | |
5133 | Vinhibit_quit = Qt; | |
5134 | update_echo_area (); | |
833ba342 | 5135 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5136 | return Qt; |
3b9a3dfa RS |
5137 | } |
5138 | ||
d0d6b7c5 JB |
5139 | /* Read pending output from the process channel, |
5140 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5141 | Yield number of decoded characters read. |
d0d6b7c5 | 5142 | |
116c423c | 5143 | This function reads at most 4096 characters. |
d0d6b7c5 | 5144 | If you want to read all available subprocess output, |
0fa1789e KH |
5145 | you must call it repeatedly until it returns zero. |
5146 | ||
5147 | The characters read are decoded according to PROC's coding-system | |
5148 | for decoding. */ | |
d0d6b7c5 | 5149 | |
ff6daed3 | 5150 | static int |
d3da34e0 | 5151 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5152 | { |
8f924df7 | 5153 | register int nbytes; |
d0d6b7c5 | 5154 | char *chars; |
d0d6b7c5 | 5155 | register Lisp_Object outstream; |
d0d6b7c5 | 5156 | register struct Lisp_Process *p = XPROCESS (proc); |
f877c546 | 5157 | register EMACS_INT opoint; |
c7580538 | 5158 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5159 | int carryover = p->decoding_carryover; |
116c423c | 5160 | int readmax = 4096; |
3a4fa2f2 SM |
5161 | int count = SPECPDL_INDEX (); |
5162 | Lisp_Object odeactivate; | |
d0d6b7c5 | 5163 | |
e690ca94 | 5164 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
5165 | if (carryover) |
5166 | /* See the comment above. */ | |
72af86bd | 5167 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5168 | |
e690ca94 KS |
5169 | #ifdef DATAGRAM_SOCKETS |
5170 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5171 | if (DATAGRAM_CHAN_P (channel)) | |
5172 | { | |
5173 | int len = datagram_address[channel].len; | |
39b1da20 | 5174 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5175 | 0, datagram_address[channel].sa, &len); |
5176 | } | |
5177 | else | |
5178 | #endif | |
d0d6b7c5 | 5179 | if (proc_buffered_char[channel] < 0) |
6b61353c | 5180 | { |
8af55556 | 5181 | #ifdef HAVE_GNUTLS |
df7fcaff LMI |
5182 | if (XPROCESS (proc)->gnutls_p) |
5183 | nbytes = emacs_gnutls_read (channel, XPROCESS (proc), | |
8af55556 TZ |
5184 | chars + carryover, readmax); |
5185 | else | |
5186 | #endif | |
5187 | nbytes = emacs_read (channel, chars + carryover, readmax); | |
6b61353c | 5188 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5189 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5190 | { |
60f0fb11 | 5191 | int delay = p->read_output_delay; |
6b61353c KH |
5192 | if (nbytes < 256) |
5193 | { | |
5194 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5195 | { | |
5196 | if (delay == 0) | |
5197 | process_output_delay_count++; | |
5198 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5199 | } | |
5200 | } | |
39b1da20 | 5201 | else if (delay > 0 && (nbytes == readmax)) |
6b61353c KH |
5202 | { |
5203 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5204 | if (delay == 0) | |
5205 | process_output_delay_count--; | |
5206 | } | |
60f0fb11 | 5207 | p->read_output_delay = delay; |
6b61353c KH |
5208 | if (delay) |
5209 | { | |
60f0fb11 | 5210 | p->read_output_skip = 1; |
6b61353c KH |
5211 | process_output_skip = 1; |
5212 | } | |
5213 | } | |
5214 | #endif | |
5215 | } | |
d0d6b7c5 JB |
5216 | else |
5217 | { | |
ed7a4b2d | 5218 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 5219 | proc_buffered_char[channel] = -1; |
8af55556 | 5220 | #ifdef HAVE_GNUTLS |
df7fcaff LMI |
5221 | if (XPROCESS (proc)->gnutls_p) |
5222 | nbytes = emacs_gnutls_read (channel, XPROCESS (proc), | |
8af55556 TZ |
5223 | chars + carryover + 1, readmax - 1); |
5224 | else | |
5225 | #endif | |
5226 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); | |
1d2fc612 RS |
5227 | if (nbytes < 0) |
5228 | nbytes = 1; | |
d0d6b7c5 | 5229 | else |
1d2fc612 | 5230 | nbytes = nbytes + 1; |
d0d6b7c5 | 5231 | } |
d0d6b7c5 | 5232 | |
60f0fb11 | 5233 | p->decoding_carryover = 0; |
ca65341e | 5234 | |
ed7a4b2d | 5235 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5236 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5237 | if (nbytes <= 0) |
5238 | { | |
5239 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5240 | return nbytes; | |
5241 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5242 | } | |
d0d6b7c5 | 5243 | |
1d2fc612 | 5244 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5245 | nbytes += carryover; |
0fa1789e | 5246 | |
3a4fa2f2 SM |
5247 | odeactivate = Vdeactivate_mark; |
5248 | /* There's no good reason to let process filters change the current | |
5249 | buffer, and many callers of accept-process-output, sit-for, and | |
5250 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 5251 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
3a4fa2f2 | 5252 | |
1d2fc612 | 5253 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
5254 | outstream = p->filter; |
5255 | if (!NILP (outstream)) | |
5256 | { | |
dfc21838 | 5257 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 5258 | Lisp_Object text; |
4da2f5be | 5259 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5260 | int waiting = waiting_for_user_input_p; |
30c78175 | 5261 | |
dfc21838 RS |
5262 | /* No need to gcpro these, because all we do with them later |
5263 | is test them for EQness, and none of them should be a string. */ | |
dfc21838 | 5264 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 5265 | okeymap = BVAR (current_buffer, keymap); |
30c78175 | 5266 | |
3a4fa2f2 SM |
5267 | /* We inhibit quit here instead of just catching it so that |
5268 | hitting ^G when a filter happens to be running won't screw | |
5269 | it up. */ | |
d0d6b7c5 | 5270 | specbind (Qinhibit_quit, Qt); |
6545aada | 5271 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5272 | |
4da2f5be RS |
5273 | /* In case we get recursively called, |
5274 | and we already saved the match data nonrecursively, | |
5275 | save the same match data in safely recursive fashion. */ | |
5276 | if (outer_running_asynch_code) | |
5277 | { | |
5278 | Lisp_Object tem; | |
5279 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5280 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5281 | restore_search_regs (); | |
5282 | record_unwind_save_match_data (); | |
5283 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5284 | } |
5285 | ||
5286 | /* For speed, if a search happens within this code, | |
5287 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5288 | running_asynch_code = 1; |
4da2f5be | 5289 | |
400a67ff | 5290 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 | 5291 | text = coding->dst_object; |
5bbf78c1 | 5292 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5293 | /* A new coding system might be found. */ |
5bbf78c1 | 5294 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5295 | { |
5bbf78c1 | 5296 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d KH |
5297 | |
5298 | /* Don't call setup_coding_system for | |
5299 | proc_decode_coding_system[channel] here. It is done in | |
5300 | detect_coding called via decode_coding above. */ | |
5301 | ||
5302 | /* If a coding system for encoding is not yet decided, we set | |
5303 | it as the same as coding-system for decoding. | |
5304 | ||
5305 | But, before doing that we must check if | |
5306 | proc_encode_coding_system[p->outfd] surely points to a | |
5307 | valid memory because p->outfd will be changed once EOF is | |
5308 | sent to the process. */ | |
5309 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5310 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5311 | { |
76d812bb KH |
5312 | p->encode_coding_system |
5313 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5314 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5315 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5316 | } |
5317 | } | |
51c6067d | 5318 | |
dd8c7a53 KH |
5319 | if (coding->carryover_bytes > 0) |
5320 | { | |
04961398 KH |
5321 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5322 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5323 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5324 | coding->carryover_bytes); | |
8c406a9b | 5325 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5326 | } |
e430e5ba | 5327 | if (SBYTES (text) > 0) |
dd97db06 KH |
5328 | internal_condition_case_1 (read_process_output_call, |
5329 | Fcons (outstream, | |
5330 | Fcons (proc, Fcons (text, Qnil))), | |
5331 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5332 | read_process_output_error_handler); | |
4da2f5be RS |
5333 | |
5334 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5335 | restore_search_regs (); |
4da2f5be | 5336 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5337 | |
bbce7d72 RS |
5338 | /* Restore waiting_for_user_input_p as it was |
5339 | when we were called, in case the filter clobbered it. */ | |
5340 | waiting_for_user_input_p = waiting; | |
5341 | ||
7973cfa8 RS |
5342 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5343 | because we might have changed minor modes or other things | |
5344 | that affect key bindings. */ | |
dfc21838 RS |
5345 | if (! EQ (Fcurrent_buffer (), obuffer) |
5346 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5347 | #endif |
927e08be RS |
5348 | /* But do it only if the caller is actually going to read events. |
5349 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5350 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5351 | if (waiting_for_user_input_p == -1) |
5352 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5353 | } |
5354 | ||
5355 | /* If no filter, write into buffer if it isn't dead. */ | |
4b4deea2 | 5356 | else if (!NILP (p->buffer) && !NILP (BVAR (XBUFFER (p->buffer), name))) |
d0d6b7c5 | 5357 | { |
b0310da4 | 5358 | Lisp_Object old_read_only; |
f877c546 EZ |
5359 | EMACS_INT old_begv, old_zv; |
5360 | EMACS_INT old_begv_byte, old_zv_byte; | |
5361 | EMACS_INT before, before_byte; | |
5362 | EMACS_INT opoint_byte; | |
ed7a4b2d | 5363 | Lisp_Object text; |
926b7e5e | 5364 | struct buffer *b; |
30c78175 | 5365 | |
d0d6b7c5 | 5366 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5367 | opoint = PT; |
d8a2934e | 5368 | opoint_byte = PT_BYTE; |
4b4deea2 | 5369 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5370 | old_begv = BEGV; |
5371 | old_zv = ZV; | |
d8a2934e RS |
5372 | old_begv_byte = BEGV_BYTE; |
5373 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5374 | |
4b4deea2 | 5375 | BVAR (current_buffer, read_only) = Qnil; |
d0d6b7c5 JB |
5376 | |
5377 | /* Insert new output into buffer | |
5378 | at the current end-of-output marker, | |
5379 | thus preserving logical ordering of input and output. */ | |
5380 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5381 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5382 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5383 | ZV_BYTE)); | |
d0d6b7c5 | 5384 | else |
d8a2934e | 5385 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5386 | before = PT; |
d8a2934e | 5387 | before_byte = PT_BYTE; |
b0310da4 JB |
5388 | |
5389 | /* If the output marker is outside of the visible region, save | |
5390 | the restriction and widen. */ | |
6ec8bbd2 | 5391 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5392 | Fwiden (); |
5393 | ||
400a67ff | 5394 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 KH |
5395 | text = coding->dst_object; |
5396 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5397 | /* A new coding system might be found. See the comment in the |
5398 | similar code in the previous `if' block. */ | |
5bbf78c1 | 5399 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5400 | { |
5bbf78c1 | 5401 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d | 5402 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5403 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5404 | { |
76d812bb KH |
5405 | p->encode_coding_system |
5406 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5407 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5408 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5409 | } |
5410 | } | |
dd8c7a53 KH |
5411 | if (coding->carryover_bytes > 0) |
5412 | { | |
04961398 KH |
5413 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5414 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5415 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5416 | coding->carryover_bytes); | |
8c406a9b | 5417 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5418 | } |
d69864bf | 5419 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5420 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5421 | != ! STRING_MULTIBYTE (text)) |
5422 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5423 | ? Fstring_as_unibyte (text) |
03f04413 | 5424 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5425 | /* Insert before markers in case we are inserting where |
5426 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5427 | insert_from_string_before_markers (text, 0, 0, |
5428 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5429 | |
926b7e5e GM |
5430 | /* Make sure the process marker's position is valid when the |
5431 | process buffer is changed in the signal_after_change above. | |
5432 | W3 is known to do that. */ | |
5433 | if (BUFFERP (p->buffer) | |
5434 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5435 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5436 | else | |
5437 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5438 | |
d0d6b7c5 JB |
5439 | update_mode_lines++; |
5440 | ||
12ca5cdf RS |
5441 | /* Make sure opoint and the old restrictions |
5442 | float ahead of any new text just as point would. */ | |
5443 | if (opoint >= before) | |
d8a2934e RS |
5444 | { |
5445 | opoint += PT - before; | |
5446 | opoint_byte += PT_BYTE - before_byte; | |
5447 | } | |
12ca5cdf | 5448 | if (old_begv > before) |
d8a2934e RS |
5449 | { |
5450 | old_begv += PT - before; | |
5451 | old_begv_byte += PT_BYTE - before_byte; | |
5452 | } | |
12ca5cdf | 5453 | if (old_zv >= before) |
d8a2934e RS |
5454 | { |
5455 | old_zv += PT - before; | |
5456 | old_zv_byte += PT_BYTE - before_byte; | |
5457 | } | |
12ca5cdf | 5458 | |
b0310da4 | 5459 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5460 | if (old_begv != BEGV || old_zv != ZV) |
5461 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5462 | |
30c78175 | 5463 | |
4b4deea2 | 5464 | BVAR (current_buffer, read_only) = old_read_only; |
d8a2934e | 5465 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5466 | } |
3a4fa2f2 SM |
5467 | /* Handling the process output should not deactivate the mark. */ |
5468 | Vdeactivate_mark = odeactivate; | |
5469 | ||
5470 | unbind_to (count, Qnil); | |
1d2fc612 | 5471 | return nbytes; |
d0d6b7c5 | 5472 | } |
d0d6b7c5 JB |
5473 | \f |
5474 | /* Sending data to subprocess */ | |
5475 | ||
5476 | jmp_buf send_process_frame; | |
0daad115 | 5477 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5478 | |
5479 | SIGTYPE | |
d3da34e0 | 5480 | send_process_trap (int ignore) |
d0d6b7c5 | 5481 | { |
333f1b6f | 5482 | SIGNAL_THREAD_CHECK (SIGPIPE); |
c8f44005 | 5483 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5484 | longjmp (send_process_frame, 1); |
5485 | } | |
5486 | ||
4556b700 RS |
5487 | /* Send some data to process PROC. |
5488 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5489 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5490 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5491 | |
a92e4183 KH |
5492 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5493 | for encoding before it is sent. | |
1fb0098c GM |
5494 | |
5495 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5496 | |
ff6daed3 | 5497 | static void |
400a67ff | 5498 | send_process (volatile Lisp_Object proc, const char *volatile buf, |
f877c546 | 5499 | volatile EMACS_INT len, volatile Lisp_Object object) |
d0d6b7c5 | 5500 | { |
ecd1f654 | 5501 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5502 | struct Lisp_Process *p = XPROCESS (proc); |
f877c546 | 5503 | EMACS_INT rv; |
0fa1789e | 5504 | struct coding_system *coding; |
347f3cd3 | 5505 | struct gcpro gcpro1; |
d2aa42f8 | 5506 | SIGTYPE (*volatile old_sigpipe) (int); |
6044e593 | 5507 | |
347f3cd3 | 5508 | GCPRO1 (object); |
d0d6b7c5 | 5509 | |
6bfd98e7 | 5510 | if (p->raw_status_new) |
6b61353c KH |
5511 | update_status (p); |
5512 | if (! EQ (p->status, Qrun)) | |
5513 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5514 | if (p->outfd < 0) |
6b61353c | 5515 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5516 | |
60f0fb11 | 5517 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5518 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5519 | |
ed7a4b2d KH |
5520 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5521 | || (BUFFERP (object) | |
4b4deea2 | 5522 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5523 | || EQ (object, Qt)) |
278bfdd6 | 5524 | { |
fcaf8878 KH |
5525 | p->encode_coding_system |
5526 | = complement_process_encoding_system (p->encode_coding_system); | |
6b61353c | 5527 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
fcaf8878 KH |
5528 | { |
5529 | /* The coding system for encoding was changed to raw-text | |
5530 | because we sent a unibyte text previously. Now we are | |
5531 | sending a multibyte text, thus we must encode it by the | |
5532 | original coding system specified for the current process. | |
5533 | ||
5534 | Another reason we comming here is that the coding system | |
5535 | was just complemented and new one was returned by | |
5536 | complement_process_encoding_system. */ | |
5537 | setup_coding_system (p->encode_coding_system, coding); | |
5538 | Vlast_coding_system_used = p->encode_coding_system; | |
5539 | } | |
e08bbb84 | 5540 | coding->src_multibyte = 1; |
278bfdd6 KH |
5541 | } |
5542 | else | |
5543 | { | |
a92e4183 KH |
5544 | /* For sending a unibyte text, character code conversion should |
5545 | not take place but EOL conversion should. So, setup raw-text | |
5546 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5547 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5548 | { |
5549 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5550 | { | |
5551 | /* But, before changing the coding, we must flush out data. */ | |
5552 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5553 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5554 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5555 | } |
5bbf78c1 KH |
5556 | setup_coding_system (raw_text_coding_system |
5557 | (Vlast_coding_system_used), | |
5558 | coding); | |
e08bbb84 | 5559 | coding->src_multibyte = 0; |
a92e4183 | 5560 | } |
278bfdd6 | 5561 | } |
a4a37e65 KH |
5562 | coding->dst_multibyte = 0; |
5563 | ||
ed7a4b2d | 5564 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5565 | { |
5bbf78c1 | 5566 | coding->dst_object = Qt; |
ed7a4b2d | 5567 | if (BUFFERP (object)) |
0fa1789e | 5568 | { |
f877c546 EZ |
5569 | EMACS_INT from_byte, from, to; |
5570 | EMACS_INT save_pt, save_pt_byte; | |
5bbf78c1 KH |
5571 | struct buffer *cur = current_buffer; |
5572 | ||
5573 | set_buffer_internal (XBUFFER (object)); | |
5574 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5575 | ||
400a67ff | 5576 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5577 | from = BYTE_TO_CHAR (from_byte); |
5578 | to = BYTE_TO_CHAR (from_byte + len); | |
5579 | TEMP_SET_PT_BOTH (from, from_byte); | |
5580 | encode_coding_object (coding, object, from, from_byte, | |
5581 | to, from_byte + len, Qt); | |
5582 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5583 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5584 | } |
5585 | else if (STRINGP (object)) | |
5586 | { | |
550c8289 KH |
5587 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5588 | SBYTES (object), Qt); | |
0fa1789e | 5589 | } |
5bbf78c1 | 5590 | else |
452294c2 | 5591 | { |
5bbf78c1 KH |
5592 | coding->dst_object = make_unibyte_string (buf, len); |
5593 | coding->produced = len; | |
452294c2 | 5594 | } |
ed7a4b2d | 5595 | |
e7fbaa65 | 5596 | len = coding->produced; |
347f3cd3 | 5597 | object = coding->dst_object; |
400a67ff | 5598 | buf = SSDATA (object); |
0fa1789e | 5599 | } |
d0d6b7c5 | 5600 | |
4556b700 RS |
5601 | if (pty_max_bytes == 0) |
5602 | { | |
5603 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5604 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5605 | if (pty_max_bytes < 0) |
5606 | pty_max_bytes = 250; | |
5607 | #else | |
5608 | pty_max_bytes = 250; | |
5609 | #endif | |
5610 | /* Deduct one, to leave space for the eof. */ | |
5611 | pty_max_bytes--; | |
5612 | } | |
5613 | ||
0daad115 GM |
5614 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5615 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5616 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5617 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5618 | { |
5619 | process_sent_to = proc; | |
5620 | while (len > 0) | |
5621 | { | |
f877c546 | 5622 | EMACS_INT this = len; |
93b4f699 | 5623 | |
0daad115 GM |
5624 | /* Send this batch, using one or more write calls. */ |
5625 | while (this > 0) | |
5626 | { | |
60f0fb11 | 5627 | int outfd = p->outfd; |
d2aa42f8 | 5628 | old_sigpipe = (SIGTYPE (*) (int)) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5629 | #ifdef DATAGRAM_SOCKETS |
5630 | if (DATAGRAM_CHAN_P (outfd)) | |
5631 | { | |
400a67ff | 5632 | rv = sendto (outfd, buf, this, |
e690ca94 KS |
5633 | 0, datagram_address[outfd].sa, |
5634 | datagram_address[outfd].len); | |
5635 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5636 | { |
5637 | signal (SIGPIPE, old_sigpipe); | |
5638 | report_file_error ("sending datagram", | |
5639 | Fcons (proc, Qnil)); | |
5640 | } | |
e690ca94 KS |
5641 | } |
5642 | else | |
5643 | #endif | |
6b61353c | 5644 | { |
8af55556 | 5645 | #ifdef HAVE_GNUTLS |
df7fcaff | 5646 | if (XPROCESS (proc)->gnutls_p) |
8af55556 | 5647 | rv = emacs_gnutls_write (outfd, |
51b59d79 | 5648 | XPROCESS (proc), |
400a67ff | 5649 | buf, this); |
8af55556 TZ |
5650 | else |
5651 | #endif | |
400a67ff | 5652 | rv = emacs_write (outfd, buf, this); |
6b61353c | 5653 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
5654 | if (p->read_output_delay > 0 |
5655 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5656 | { |
60f0fb11 | 5657 | p->read_output_delay = 0; |
6b61353c | 5658 | process_output_delay_count--; |
60f0fb11 | 5659 | p->read_output_skip = 0; |
6b61353c KH |
5660 | } |
5661 | #endif | |
5662 | } | |
0daad115 | 5663 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5664 | |
0daad115 GM |
5665 | if (rv < 0) |
5666 | { | |
5667 | if (0 | |
d0d6b7c5 | 5668 | #ifdef EWOULDBLOCK |
0daad115 | 5669 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5670 | #endif |
5671 | #ifdef EAGAIN | |
0daad115 | 5672 | || errno == EAGAIN |
d0d6b7c5 | 5673 | #endif |
0daad115 | 5674 | ) |
177c0ea7 | 5675 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5676 | that may allow the program |
5677 | to finish doing output and read more. */ | |
5678 | { | |
0daad115 | 5679 | int offset = 0; |
4556b700 | 5680 | |
3433b6bd | 5681 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5682 | /* A gross hack to work around a bug in FreeBSD. |
5683 | In the following sequence, read(2) returns | |
5684 | bogus data: | |
5685 | ||
5686 | write(2) 1022 bytes | |
5687 | write(2) 954 bytes, get EAGAIN | |
5688 | read(2) 1024 bytes in process_read_output | |
5689 | read(2) 11 bytes in process_read_output | |
5690 | ||
5691 | That is, read(2) returns more bytes than have | |
5692 | ever been written successfully. The 1033 bytes | |
5693 | read are the 1022 bytes written successfully | |
5694 | after processing (for example with CRs added if | |
5695 | the terminal is set up that way which it is | |
5696 | here). The same bytes will be seen again in a | |
5697 | later read(2), without the CRs. */ | |
177c0ea7 | 5698 | |
0daad115 GM |
5699 | if (errno == EAGAIN) |
5700 | { | |
5701 | int flags = FWRITE; | |
60f0fb11 | 5702 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5703 | } |
3433b6bd | 5704 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5705 | |
0daad115 GM |
5706 | /* Running filters might relocate buffers or strings. |
5707 | Arrange to relocate BUF. */ | |
347f3cd3 | 5708 | if (BUFFERP (object)) |
400a67ff PE |
5709 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), |
5710 | (unsigned char *) buf); | |
0daad115 | 5711 | else if (STRINGP (object)) |
400a67ff | 5712 | offset = buf - SSDATA (object); |
0daad115 | 5713 | |
f3e6605c | 5714 | #ifdef EMACS_HAS_USECS |
214d6069 | 5715 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5716 | #else |
214d6069 | 5717 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5718 | #endif |
4556b700 | 5719 | |
347f3cd3 | 5720 | if (BUFFERP (object)) |
400a67ff PE |
5721 | buf = (char *) BUF_BYTE_ADDRESS (XBUFFER (object), |
5722 | offset); | |
0daad115 | 5723 | else if (STRINGP (object)) |
400a67ff | 5724 | buf = offset + SSDATA (object); |
4556b700 | 5725 | |
0daad115 GM |
5726 | rv = 0; |
5727 | } | |
5728 | else | |
5729 | /* This is a real error. */ | |
5730 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5731 | } | |
5732 | buf += rv; | |
5733 | len -= rv; | |
5734 | this -= rv; | |
5735 | } | |
0daad115 GM |
5736 | } |
5737 | } | |
d0d6b7c5 JB |
5738 | else |
5739 | { | |
0ff69270 | 5740 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5741 | proc = process_sent_to; |
6b61353c | 5742 | p = XPROCESS (proc); |
6bfd98e7 | 5743 | p->raw_status_new = 0; |
6b61353c | 5744 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); |
60f0fb11 | 5745 | p->tick = ++process_tick; |
d0d6b7c5 | 5746 | deactivate_process (proc); |
6b61353c | 5747 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5748 | } |
6044e593 RS |
5749 | |
5750 | UNGCPRO; | |
d0d6b7c5 JB |
5751 | } |
5752 | ||
5753 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5754 | 3, 3, 0, |
5755 | doc: /* Send current contents of region as input to PROCESS. | |
5756 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5757 | nil, indicating the current buffer's process. | |
5758 | Called from program, takes three arguments, PROCESS, START and END. | |
5759 | If the region is more than 500 characters long, | |
5760 | it is sent in several bunches. This may happen even for shorter regions. | |
5761 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5762 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5763 | { |
5764 | Lisp_Object proc; | |
f877c546 | 5765 | EMACS_INT start1, end1; |
d0d6b7c5 JB |
5766 | |
5767 | proc = get_process (process); | |
5768 | validate_region (&start, &end); | |
1b234f64 KH |
5769 | |
5770 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5771 | move_gap (XINT (start)); | |
5772 | ||
5773 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5774 | end1 = CHAR_TO_BYTE (XINT (end)); | |
400a67ff | 5775 | send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1, |
1b234f64 KH |
5776 | Fcurrent_buffer ()); |
5777 | ||
d0d6b7c5 JB |
5778 | return Qnil; |
5779 | } | |
5780 | ||
5781 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5782 | 2, 2, 0, |
5783 | doc: /* Send PROCESS the contents of STRING as input. | |
5784 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5785 | nil, indicating the current buffer's process. | |
5786 | If STRING is more than 500 characters long, | |
5787 | it is sent in several bunches. This may happen even for shorter strings. | |
5788 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5789 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5790 | { |
5791 | Lisp_Object proc; | |
b7826503 | 5792 | CHECK_STRING (string); |
d0d6b7c5 | 5793 | proc = get_process (process); |
400a67ff | 5794 | send_process (proc, SSDATA (string), |
1b234f64 | 5795 | SBYTES (string), string); |
d0d6b7c5 JB |
5796 | return Qnil; |
5797 | } | |
5798 | \f | |
16782258 JD |
5799 | /* Return the foreground process group for the tty/pty that |
5800 | the process P uses. */ | |
5801 | static int | |
d3da34e0 | 5802 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 JD |
5803 | { |
5804 | int gid = -1; | |
5805 | ||
f3d9532b | 5806 | #ifdef TIOCGPGRP |
60f0fb11 | 5807 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5808 | { |
5809 | int fd; | |
5810 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5811 | master side. Try the slave side. */ | |
42a5b22f | 5812 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5813 | |
5814 | if (fd != -1) | |
5815 | { | |
5816 | ioctl (fd, TIOCGPGRP, &gid); | |
5817 | emacs_close (fd); | |
5818 | } | |
5819 | } | |
5820 | #endif /* defined (TIOCGPGRP ) */ | |
5821 | ||
5822 | return gid; | |
5823 | } | |
5824 | ||
b81ea5ef RS |
5825 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5826 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5827 | doc: /* Return t if PROCESS has given the terminal to a child. |
5828 | If the operating system does not make it possible to find out, | |
5829 | return t unconditionally. */) | |
5842a27b | 5830 | (Lisp_Object process) |
b81ea5ef RS |
5831 | { |
5832 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5833 | in a way that will cause returning t. */ | |
16782258 | 5834 | int gid; |
b81ea5ef RS |
5835 | Lisp_Object proc; |
5836 | struct Lisp_Process *p; | |
5837 | ||
5838 | proc = get_process (process); | |
5839 | p = XPROCESS (proc); | |
5840 | ||
d888760c | 5841 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5842 | error ("Process %s is not a subprocess", |
d5db4077 | 5843 | SDATA (p->name)); |
60f0fb11 | 5844 | if (p->infd < 0) |
b81ea5ef | 5845 | error ("Process %s is not active", |
d5db4077 | 5846 | SDATA (p->name)); |
b81ea5ef | 5847 | |
16782258 | 5848 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5849 | |
6bfd98e7 | 5850 | if (gid == p->pid) |
b81ea5ef RS |
5851 | return Qnil; |
5852 | return Qt; | |
5853 | } | |
5854 | \f | |
d0d6b7c5 | 5855 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5856 | If CURRENT_GROUP is t, that means send to the process group |
5857 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5858 | This is used for various commands in shell mode. |
b81ea5ef RS |
5859 | If CURRENT_GROUP is lambda, that means send to the process group |
5860 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5861 | ||
d0d6b7c5 | 5862 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5863 | right away. |
5864 | ||
5865 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5866 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5867 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5868 | |
f9738840 | 5869 | static void |
d3da34e0 JB |
5870 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5871 | int nomsg) | |
d0d6b7c5 JB |
5872 | { |
5873 | Lisp_Object proc; | |
5874 | register struct Lisp_Process *p; | |
5875 | int gid; | |
5876 | int no_pgrp = 0; | |
5877 | ||
5878 | proc = get_process (process); | |
5879 | p = XPROCESS (proc); | |
5880 | ||
d888760c | 5881 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5882 | error ("Process %s is not a subprocess", |
d5db4077 | 5883 | SDATA (p->name)); |
60f0fb11 | 5884 | if (p->infd < 0) |
d0d6b7c5 | 5885 | error ("Process %s is not active", |
d5db4077 | 5886 | SDATA (p->name)); |
d0d6b7c5 | 5887 | |
60f0fb11 | 5888 | if (!p->pty_flag) |
d0d6b7c5 JB |
5889 | current_group = Qnil; |
5890 | ||
d0d6b7c5 | 5891 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5892 | if (NILP (current_group)) |
5893 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5894 | gid = p->pid; |
2af70a0c | 5895 | else |
d0d6b7c5 | 5896 | { |
b0310da4 | 5897 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5898 | /* If possible, send signals to the entire pgrp |
5899 | by sending an input character to it. */ | |
b0310da4 | 5900 | |
6be429b1 | 5901 | struct termios t; |
7f916a36 RS |
5902 | cc_t *sig_char = NULL; |
5903 | ||
60f0fb11 | 5904 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5905 | |
5906 | switch (signo) | |
5907 | { | |
5908 | case SIGINT: | |
7f916a36 RS |
5909 | sig_char = &t.c_cc[VINTR]; |
5910 | break; | |
6be429b1 JB |
5911 | |
5912 | case SIGQUIT: | |
7f916a36 RS |
5913 | sig_char = &t.c_cc[VQUIT]; |
5914 | break; | |
6be429b1 JB |
5915 | |
5916 | case SIGTSTP: | |
d0adf46f | 5917 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5918 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5919 | #else |
7f916a36 | 5920 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5921 | #endif |
7f916a36 | 5922 | break; |
6be429b1 JB |
5923 | } |
5924 | ||
ca4313d5 | 5925 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5926 | { |
5927 | send_process (proc, sig_char, 1, Qnil); | |
5928 | return; | |
5929 | } | |
5930 | /* If we can't send the signal with a character, | |
5931 | fall through and send it another way. */ | |
f1c206fc RS |
5932 | |
5933 | /* The code above may fall through if it can't | |
5934 | handle the signal. */ | |
20505336 | 5935 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5936 | |
177c0ea7 | 5937 | #ifdef TIOCGPGRP |
2af70a0c | 5938 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5939 | Otherwise, use the pty to get the pgrp. |
5940 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5941 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5942 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5943 | His patch indicates that if TIOCGPGRP returns an error, then |
5944 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5945 | |
16782258 | 5946 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5947 | |
16782258 JD |
5948 | if (gid == -1) |
5949 | /* If we can't get the information, assume | |
5950 | the shell owns the tty. */ | |
6bfd98e7 | 5951 | gid = p->pid; |
2af70a0c RS |
5952 | |
5953 | /* It is not clear whether anything really can set GID to -1. | |
5954 | Perhaps on some system one of those ioctls can or could do so. | |
5955 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5956 | if (gid == -1) |
5957 | no_pgrp = 1; | |
b0310da4 | 5958 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5959 | /* Can't select pgrps on this system, so we know that |
5960 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5961 | gid = p->pid; |
301c3fe4 | 5962 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5963 | |
5964 | /* If current_group is lambda, and the shell owns the terminal, | |
5965 | don't send any signal. */ | |
6bfd98e7 | 5966 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5967 | return; |
d0d6b7c5 | 5968 | } |
d0d6b7c5 JB |
5969 | |
5970 | switch (signo) | |
5971 | { | |
5972 | #ifdef SIGCONT | |
5973 | case SIGCONT: | |
6bfd98e7 | 5974 | p->raw_status_new = 0; |
d0d6b7c5 | 5975 | p->status = Qrun; |
60f0fb11 | 5976 | p->tick = ++process_tick; |
d0d6b7c5 | 5977 | if (!nomsg) |
e42bdf01 CY |
5978 | { |
5979 | status_notify (NULL); | |
5980 | redisplay_preserve_echo_area (13); | |
5981 | } | |
d0d6b7c5 | 5982 | break; |
301c3fe4 | 5983 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 5984 | case SIGINT: |
d0d6b7c5 | 5985 | case SIGQUIT: |
d0d6b7c5 | 5986 | case SIGKILL: |
60f0fb11 | 5987 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5988 | break; |
5989 | } | |
5990 | ||
5991 | /* If we don't have process groups, send the signal to the immediate | |
5992 | subprocess. That isn't really right, but it's better than any | |
5993 | obvious alternative. */ | |
5994 | if (no_pgrp) | |
5995 | { | |
6bfd98e7 | 5996 | kill (p->pid, signo); |
d0d6b7c5 JB |
5997 | return; |
5998 | } | |
5999 | ||
6000 | /* gid may be a pid, or minus a pgrp's number */ | |
6001 | #ifdef TIOCSIGSEND | |
6002 | if (!NILP (current_group)) | |
16782258 | 6003 | { |
60f0fb11 | 6004 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
6005 | EMACS_KILLPG (gid, signo); |
6006 | } | |
d0d6b7c5 JB |
6007 | else |
6008 | { | |
6bfd98e7 | 6009 | gid = - p->pid; |
d0d6b7c5 JB |
6010 | kill (gid, signo); |
6011 | } | |
301c3fe4 | 6012 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 6013 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 6014 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
6015 | } |
6016 | ||
6017 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
6018 | doc: /* Interrupt process PROCESS. |
6019 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 6020 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
6021 | Second arg CURRENT-GROUP non-nil means send signal to |
6022 | the current process-group of the process's controlling terminal | |
6023 | rather than to the process's own process group. | |
6024 | If the process is a shell, this means interrupt current subjob | |
6025 | rather than the shell. | |
6026 | ||
6027 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
6028 | don't send the signal. */) | |
5842a27b | 6029 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6030 | { |
6031 | process_send_signal (process, SIGINT, current_group, 0); | |
6032 | return process; | |
6033 | } | |
6034 | ||
6035 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
6036 | doc: /* Kill process PROCESS. May be process or name of one. |
6037 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 6038 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6039 | { |
6040 | process_send_signal (process, SIGKILL, current_group, 0); | |
6041 | return process; | |
6042 | } | |
6043 | ||
6044 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
6045 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
6046 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 6047 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6048 | { |
6049 | process_send_signal (process, SIGQUIT, current_group, 0); | |
6050 | return process; | |
6051 | } | |
6052 | ||
6053 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6054 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6055 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6056 | If PROCESS is a network or serial process, inhibit handling of incoming |
6057 | traffic. */) | |
5842a27b | 6058 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6059 | { |
d888760c | 6060 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6061 | { |
6062 | struct Lisp_Process *p; | |
177c0ea7 | 6063 | |
e690ca94 KS |
6064 | p = XPROCESS (process); |
6065 | if (NILP (p->command) | |
60f0fb11 | 6066 | && p->infd >= 0) |
e690ca94 | 6067 | { |
60f0fb11 SM |
6068 | FD_CLR (p->infd, &input_wait_mask); |
6069 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
6070 | } |
6071 | p->command = Qt; | |
6072 | return process; | |
6073 | } | |
d0d6b7c5 | 6074 | #ifndef SIGTSTP |
a9a73d6c | 6075 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6076 | #else |
6077 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6078 | #endif | |
6079 | return process; | |
6080 | } | |
6081 | ||
6082 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6083 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6084 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6085 | If PROCESS is a network or serial process, resume handling of incoming |
6086 | traffic. */) | |
5842a27b | 6087 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6088 | { |
d888760c | 6089 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6090 | { |
6091 | struct Lisp_Process *p; | |
6092 | ||
6093 | p = XPROCESS (process); | |
6094 | if (EQ (p->command, Qt) | |
60f0fb11 | 6095 | && p->infd >= 0 |
e690ca94 KS |
6096 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
6097 | { | |
60f0fb11 SM |
6098 | FD_SET (p->infd, &input_wait_mask); |
6099 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6100 | #ifdef WINDOWSNT |
6101 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6102 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 6103 | #else /* not WINDOWSNT */ |
d888760c | 6104 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 6105 | #endif /* not WINDOWSNT */ |
e690ca94 KS |
6106 | } |
6107 | p->command = Qnil; | |
6108 | return process; | |
6109 | } | |
d0d6b7c5 JB |
6110 | #ifdef SIGCONT |
6111 | process_send_signal (process, SIGCONT, current_group, 0); | |
6112 | #else | |
a9a73d6c | 6113 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6114 | #endif |
6115 | return process; | |
6116 | } | |
6117 | ||
6118 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6119 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6120 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6121 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6122 | process to signal; in this case, the process need not be a child of |
6123 | this Emacs. | |
fdb82f93 | 6124 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6125 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6126 | { |
6bfd98e7 | 6127 | pid_t pid; |
cdd5ea86 KS |
6128 | |
6129 | if (INTEGERP (process)) | |
6130 | { | |
6bfd98e7 SM |
6131 | pid = XINT (process); |
6132 | goto got_it; | |
6133 | } | |
6134 | ||
6135 | if (FLOATP (process)) | |
6136 | { | |
648f6edf | 6137 | pid = (pid_t) XFLOAT_DATA (process); |
cdd5ea86 KS |
6138 | goto got_it; |
6139 | } | |
6140 | ||
6141 | if (STRINGP (process)) | |
6142 | { | |
6143 | Lisp_Object tem; | |
6144 | if (tem = Fget_process (process), NILP (tem)) | |
6145 | { | |
6bfd98e7 SM |
6146 | pid = XINT (Fstring_to_number (process, make_number (10))); |
6147 | if (pid > 0) | |
cdd5ea86 KS |
6148 | goto got_it; |
6149 | } | |
6150 | process = tem; | |
6151 | } | |
6152 | else | |
6153 | process = get_process (process); | |
177c0ea7 | 6154 | |
cdd5ea86 KS |
6155 | if (NILP (process)) |
6156 | return process; | |
6157 | ||
6158 | CHECK_PROCESS (process); | |
6159 | pid = XPROCESS (process)->pid; | |
6bfd98e7 | 6160 | if (pid <= 0) |
cdd5ea86 KS |
6161 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
6162 | ||
6163 | got_it: | |
4766242d | 6164 | |
59324b1d | 6165 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6166 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6167 | XSETINT (sigcode, VALUE) |
6168 | ||
6169 | if (INTEGERP (sigcode)) | |
6170 | ; | |
6171 | else | |
6172 | { | |
25a48bd0 | 6173 | char *name; |
4766242d | 6174 | |
b7826503 | 6175 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6176 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6177 | |
ed3751c8 | 6178 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6179 | name += 3; |
6180 | ||
4766242d RS |
6181 | if (0) |
6182 | ; | |
59324b1d KS |
6183 | #ifdef SIGUSR1 |
6184 | parse_signal ("usr1", SIGUSR1); | |
6185 | #endif | |
6186 | #ifdef SIGUSR2 | |
6187 | parse_signal ("usr2", SIGUSR2); | |
6188 | #endif | |
6189 | #ifdef SIGTERM | |
6190 | parse_signal ("term", SIGTERM); | |
6191 | #endif | |
4766242d | 6192 | #ifdef SIGHUP |
59324b1d | 6193 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6194 | #endif |
6195 | #ifdef SIGINT | |
59324b1d | 6196 | parse_signal ("int", SIGINT); |
4766242d RS |
6197 | #endif |
6198 | #ifdef SIGQUIT | |
59324b1d | 6199 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6200 | #endif |
6201 | #ifdef SIGILL | |
59324b1d | 6202 | parse_signal ("ill", SIGILL); |
4766242d RS |
6203 | #endif |
6204 | #ifdef SIGABRT | |
59324b1d | 6205 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6206 | #endif |
6207 | #ifdef SIGEMT | |
59324b1d | 6208 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6209 | #endif |
6210 | #ifdef SIGKILL | |
59324b1d | 6211 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6212 | #endif |
6213 | #ifdef SIGFPE | |
59324b1d | 6214 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6215 | #endif |
6216 | #ifdef SIGBUS | |
59324b1d | 6217 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6218 | #endif |
6219 | #ifdef SIGSEGV | |
59324b1d | 6220 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6221 | #endif |
6222 | #ifdef SIGSYS | |
59324b1d | 6223 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6224 | #endif |
6225 | #ifdef SIGPIPE | |
59324b1d | 6226 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6227 | #endif |
6228 | #ifdef SIGALRM | |
59324b1d | 6229 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6230 | #endif |
6231 | #ifdef SIGURG | |
59324b1d | 6232 | parse_signal ("urg", SIGURG); |
4766242d RS |
6233 | #endif |
6234 | #ifdef SIGSTOP | |
59324b1d | 6235 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6236 | #endif |
6237 | #ifdef SIGTSTP | |
59324b1d | 6238 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6239 | #endif |
6240 | #ifdef SIGCONT | |
59324b1d | 6241 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6242 | #endif |
6243 | #ifdef SIGCHLD | |
59324b1d | 6244 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6245 | #endif |
6246 | #ifdef SIGTTIN | |
59324b1d | 6247 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6248 | #endif |
6249 | #ifdef SIGTTOU | |
59324b1d | 6250 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6251 | #endif |
6252 | #ifdef SIGIO | |
59324b1d | 6253 | parse_signal ("io", SIGIO); |
4766242d RS |
6254 | #endif |
6255 | #ifdef SIGXCPU | |
59324b1d | 6256 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6257 | #endif |
6258 | #ifdef SIGXFSZ | |
59324b1d | 6259 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6260 | #endif |
6261 | #ifdef SIGVTALRM | |
59324b1d | 6262 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6263 | #endif |
6264 | #ifdef SIGPROF | |
59324b1d | 6265 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6266 | #endif |
6267 | #ifdef SIGWINCH | |
59324b1d | 6268 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6269 | #endif |
6270 | #ifdef SIGINFO | |
59324b1d | 6271 | parse_signal ("info", SIGINFO); |
4766242d RS |
6272 | #endif |
6273 | else | |
9fa195a2 | 6274 | error ("Undefined signal name %s", name); |
4766242d RS |
6275 | } |
6276 | ||
59324b1d | 6277 | #undef parse_signal |
4766242d | 6278 | |
6bfd98e7 | 6279 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6280 | } |
6281 | ||
6282 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6283 | doc: /* Make PROCESS see end-of-file in its input. |
6284 | EOF comes after any text already sent to it. | |
6285 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6286 | nil, indicating the current buffer's process. | |
6287 | If PROCESS is a network connection, or is a process communicating | |
6288 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6289 | text to PROCESS after you call this function. |
6290 | If PROCESS is a serial process, wait until all output written to the | |
6291 | process has been transmitted to the serial port. */) | |
5842a27b | 6292 | (Lisp_Object process) |
d0d6b7c5 JB |
6293 | { |
6294 | Lisp_Object proc; | |
de7fbd09 | 6295 | struct coding_system *coding; |
d0d6b7c5 | 6296 | |
e690ca94 KS |
6297 | if (DATAGRAM_CONN_P (process)) |
6298 | return process; | |
6299 | ||
d0d6b7c5 | 6300 | proc = get_process (process); |
60f0fb11 | 6301 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6302 | |
6303 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6304 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 RS |
6305 | update_status (XPROCESS (proc)); |
6306 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6307 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6308 | |
de7fbd09 KH |
6309 | if (CODING_REQUIRE_FLUSHING (coding)) |
6310 | { | |
6311 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6312 | send_process (proc, "", 0, Qnil); | |
6313 | } | |
6314 | ||
60f0fb11 | 6315 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6316 | send_process (proc, "\004", 1, Qnil); |
a879ee6f | 6317 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6318 | { |
a7ebc409 | 6319 | #ifndef WINDOWSNT |
d888760c GM |
6320 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6321 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6322 | #endif /* not WINDOWSNT */ |
d888760c GM |
6323 | /* Do nothing on Windows because writes are blocking. */ |
6324 | } | |
d0d6b7c5 JB |
6325 | else |
6326 | { | |
4525f571 RS |
6327 | int old_outfd, new_outfd; |
6328 | ||
93853f3d | 6329 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6330 | /* If this is a network connection, or socketpair is used |
6331 | for communication with the subprocess, call shutdown to cause EOF. | |
6332 | (In some old system, shutdown to socketpair doesn't work. | |
6333 | Then we just can't win.) */ | |
a879ee6f | 6334 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6335 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6336 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6337 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6338 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6339 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6340 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6341 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6342 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6343 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6344 | if (new_outfd < 0) |
6345 | abort (); | |
60f0fb11 | 6346 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6347 | |
6348 | if (!proc_encode_coding_system[new_outfd]) | |
6349 | proc_encode_coding_system[new_outfd] | |
6350 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
72af86bd AS |
6351 | memcpy (proc_encode_coding_system[new_outfd], |
6352 | proc_encode_coding_system[old_outfd], | |
6353 | sizeof (struct coding_system)); | |
6354 | memset (proc_encode_coding_system[old_outfd], 0, | |
6355 | sizeof (struct coding_system)); | |
4525f571 | 6356 | |
60f0fb11 | 6357 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6358 | } |
d0d6b7c5 JB |
6359 | return process; |
6360 | } | |
d0d6b7c5 | 6361 | \f |
3fed8ad5 GM |
6362 | /* On receipt of a signal that a child status has changed, loop asking |
6363 | about children with changed statuses until the system says there | |
6364 | are no more. | |
177c0ea7 | 6365 | |
3fed8ad5 GM |
6366 | All we do is change the status; we do not run sentinels or print |
6367 | notifications. That is saved for the next time keyboard input is | |
6368 | done, in order to avoid timing errors. | |
6369 | ||
6370 | ** WARNING: this can be called during garbage collection. | |
6371 | Therefore, it must not be fooled by the presence of mark bits in | |
6372 | Lisp objects. | |
6373 | ||
6374 | ** USG WARNING: Although it is not obvious from the documentation | |
6375 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6376 | signal() before executing at least one wait(), otherwise the | |
6377 | handler will be called again, resulting in an infinite loop. The | |
6378 | relevant portion of the documentation reads "SIGCLD signals will be | |
6379 | queued and the signal-catching function will be continually | |
6380 | reentered until the queue is empty". Invoking signal() causes the | |
6381 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6382 | Inc. |
6383 | ||
6384 | ** Malloc WARNING: This should never call malloc either directly or | |
6385 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6386 | |
a5cfdda8 | 6387 | #ifdef SIGCHLD |
d0d6b7c5 | 6388 | SIGTYPE |
d3da34e0 | 6389 | sigchld_handler (int signo) |
d0d6b7c5 JB |
6390 | { |
6391 | int old_errno = errno; | |
6392 | Lisp_Object proc; | |
97ec208f | 6393 | struct Lisp_Process *p; |
d0d6b7c5 | 6394 | |
333f1b6f JD |
6395 | SIGNAL_THREAD_CHECK (signo); |
6396 | ||
d0d6b7c5 JB |
6397 | while (1) |
6398 | { | |
8e050977 | 6399 | pid_t pid; |
bba104c1 | 6400 | int w; |
d0d6b7c5 JB |
6401 | Lisp_Object tail; |
6402 | ||
6403 | #ifdef WNOHANG | |
6404 | #ifndef WUNTRACED | |
6405 | #define WUNTRACED 0 | |
6406 | #endif /* no WUNTRACED */ | |
6407 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 | 6408 | do |
63136da6 | 6409 | { |
29ed4d51 CY |
6410 | errno = 0; |
6411 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
29ed4d51 | 6412 | } |
e7d4a904 | 6413 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6414 | |
6415 | if (pid <= 0) | |
6416 | { | |
3fed8ad5 GM |
6417 | /* PID == 0 means no processes found, PID == -1 means a real |
6418 | failure. We have done all our job, so return. */ | |
d0d6b7c5 | 6419 | |
d0d6b7c5 JB |
6420 | errno = old_errno; |
6421 | return; | |
6422 | } | |
6423 | #else | |
6424 | pid = wait (&w); | |
6425 | #endif /* no WNOHANG */ | |
6426 | ||
6427 | /* Find the process that signaled us, and record its status. */ | |
6428 | ||
a5cfdda8 | 6429 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6430 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6431 | { |
8e050977 | 6432 | Lisp_Object xpid = XCAR (tail); |
8e50cc2d SM |
6433 | if ((INTEGERP (xpid) && pid == (pid_t) XINT (xpid)) |
6434 | || (FLOATP (xpid) && pid == (pid_t) XFLOAT_DATA (xpid))) | |
8e050977 CY |
6435 | { |
6436 | XSETCAR (tail, Qnil); | |
6437 | goto sigchld_end_of_loop; | |
6438 | } | |
a5cfdda8 KS |
6439 | } |
6440 | ||
6441 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6442 | p = 0; |
8e50cc2d | 6443 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6444 | { |
70949dac | 6445 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6446 | p = XPROCESS (proc); |
d888760c | 6447 | if (EQ (p->type, Qreal) && p->pid == pid) |
d0d6b7c5 JB |
6448 | break; |
6449 | p = 0; | |
6450 | } | |
6451 | ||
6452 | /* Look for an asynchronous process whose pid hasn't been filled | |
6453 | in yet. */ | |
6454 | if (p == 0) | |
8e50cc2d | 6455 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6456 | { |
70949dac | 6457 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6458 | p = XPROCESS (proc); |
6bfd98e7 | 6459 | if (p->pid == -1) |
d0d6b7c5 JB |
6460 | break; |
6461 | p = 0; | |
6462 | } | |
177c0ea7 | 6463 | |
d0d6b7c5 JB |
6464 | /* Change the status of the process that was found. */ |
6465 | if (p != 0) | |
6466 | { | |
e98d950b | 6467 | int clear_desc_flag = 0; |
177c0ea7 | 6468 | |
60f0fb11 | 6469 | p->tick = ++process_tick; |
bba104c1 | 6470 | p->raw_status = w; |
6bfd98e7 | 6471 | p->raw_status_new = 1; |
177c0ea7 | 6472 | |
d0d6b7c5 | 6473 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6474 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6475 | && p->infd >= 0) |
e98d950b RS |
6476 | clear_desc_flag = 1; |
6477 | ||
6478 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6479 | if (clear_desc_flag) | |
6480 | { | |
60f0fb11 SM |
6481 | FD_CLR (p->infd, &input_wait_mask); |
6482 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6483 | } |
6be429b1 | 6484 | |
214d6069 | 6485 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6486 | look around. */ |
6487 | if (input_available_clear_time) | |
6488 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6489 | } |
6490 | ||
a5cfdda8 KS |
6491 | /* There was no asynchronous process found for that pid: we have |
6492 | a synchronous process. */ | |
d0d6b7c5 JB |
6493 | else |
6494 | { | |
6495 | synch_process_alive = 0; | |
6496 | ||
6497 | /* Report the status of the synchronous process. */ | |
6498 | if (WIFEXITED (w)) | |
6499 | synch_process_retcode = WRETCODE (w); | |
6500 | else if (WIFSIGNALED (w)) | |
63136da6 | 6501 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6502 | |
214d6069 | 6503 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6504 | look around. */ |
6505 | if (input_available_clear_time) | |
6506 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6507 | } |
6508 | ||
a5cfdda8 KS |
6509 | sigchld_end_of_loop: |
6510 | ; | |
6511 | ||
d0d6b7c5 JB |
6512 | /* On some systems, we must return right away. |
6513 | If any more processes want to signal us, we will | |
6514 | get another signal. | |
6515 | Otherwise (on systems that have WNOHANG), loop around | |
6516 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6517 | #if (defined WINDOWSNT \ |
8a2a6032 | 6518 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6519 | && !(defined HPUX && defined WNOHANG))) |
d0d6b7c5 JB |
6520 | errno = old_errno; |
6521 | return; | |
6522 | #endif /* USG, but not HPUX with WNOHANG */ | |
6523 | } | |
6524 | } | |
a5cfdda8 | 6525 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6526 | \f |
6527 | ||
6528 | static Lisp_Object | |
d3da34e0 | 6529 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6530 | { |
70949dac | 6531 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6532 | return Qnil; |
6533 | } | |
6534 | ||
3b9a3dfa | 6535 | static Lisp_Object |
d3da34e0 | 6536 | exec_sentinel_error_handler (Lisp_Object error) |
3b9a3dfa RS |
6537 | { |
6538 | cmd_error_internal (error, "error in process sentinel: "); | |
6539 | Vinhibit_quit = Qt; | |
6540 | update_echo_area (); | |
833ba342 | 6541 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6542 | return Qt; |
3b9a3dfa RS |
6543 | } |
6544 | ||
d0d6b7c5 | 6545 | static void |
d3da34e0 | 6546 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6547 | { |
dfc21838 | 6548 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6549 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6550 | int count = SPECPDL_INDEX (); |
4da2f5be | 6551 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6552 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6553 | |
84af9896 RS |
6554 | if (inhibit_sentinels) |
6555 | return; | |
6556 | ||
dfc21838 RS |
6557 | /* No need to gcpro these, because all we do with them later |
6558 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6559 | odeactivate = Vdeactivate_mark; |
dfc21838 | 6560 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6561 | okeymap = BVAR (current_buffer, keymap); |
dfc21838 | 6562 | |
97e53006 SM |
6563 | /* There's no good reason to let sentinels change the current |
6564 | buffer, and many callers of accept-process-output, sit-for, and | |
6565 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 6566 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
97e53006 | 6567 | |
d0d6b7c5 JB |
6568 | sentinel = p->sentinel; |
6569 | if (NILP (sentinel)) | |
6570 | return; | |
6571 | ||
6572 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6573 | assure that it gets restored no matter how the sentinel exits. */ | |
6574 | p->sentinel = Qnil; | |
6575 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6576 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6577 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6578 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6579 | |
4da2f5be RS |
6580 | /* In case we get recursively called, |
6581 | and we already saved the match data nonrecursively, | |
6582 | save the same match data in safely recursive fashion. */ | |
6583 | if (outer_running_asynch_code) | |
6584 | { | |
6585 | Lisp_Object tem; | |
89f2614d KS |
6586 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6587 | restore_search_regs (); | |
6588 | record_unwind_save_match_data (); | |
6589 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6590 | } |
6591 | ||
6592 | /* For speed, if a search happens within this code, | |
6593 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6594 | running_asynch_code = 1; |
4da2f5be | 6595 | |
3b9a3dfa RS |
6596 | internal_condition_case_1 (read_process_output_call, |
6597 | Fcons (sentinel, | |
6598 | Fcons (proc, Fcons (reason, Qnil))), | |
6599 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6600 | exec_sentinel_error_handler); | |
4da2f5be RS |
6601 | |
6602 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6603 | restore_search_regs (); |
4da2f5be | 6604 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6605 | |
6606 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6607 | |
6608 | /* Restore waiting_for_user_input_p as it was | |
6609 | when we were called, in case the filter clobbered it. */ | |
6610 | waiting_for_user_input_p = waiting; | |
6611 | ||
7973cfa8 | 6612 | #if 0 |
dfc21838 RS |
6613 | if (! EQ (Fcurrent_buffer (), obuffer) |
6614 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6615 | #endif |
927e08be RS |
6616 | /* But do it only if the caller is actually going to read events. |
6617 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6618 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6619 | if (waiting_for_user_input_p == -1) |
6620 | record_asynch_buffer_change (); | |
8fb3cf64 | 6621 | |
2ea6d561 | 6622 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6623 | } |
6624 | ||
6625 | /* Report all recent events of a change in process status | |
6626 | (either run the sentinel or output a message). | |
b50fe468 RS |
6627 | This is usually done while Emacs is waiting for keyboard input |
6628 | but can be done at other times. */ | |
d0d6b7c5 | 6629 | |
ff6daed3 | 6630 | static void |
d3da34e0 | 6631 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6632 | { |
6633 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6634 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6635 | struct gcpro gcpro1, gcpro2; |
6636 | ||
2e4149a8 KH |
6637 | tail = Qnil; |
6638 | msg = Qnil; | |
d0d6b7c5 JB |
6639 | /* We need to gcpro tail; if read_process_output calls a filter |
6640 | which deletes a process and removes the cons to which tail points | |
6641 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6642 | reference. */ | |
6643 | GCPRO2 (tail, msg); | |
6644 | ||
30623085 RS |
6645 | /* Set this now, so that if new processes are created by sentinels |
6646 | that we run, we get called again to handle their status changes. */ | |
6647 | update_tick = process_tick; | |
6648 | ||
99784d63 | 6649 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6650 | { |
30623085 RS |
6651 | Lisp_Object symbol; |
6652 | register struct Lisp_Process *p; | |
6653 | ||
99784d63 | 6654 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6655 | p = XPROCESS (proc); |
6656 | ||
60f0fb11 | 6657 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6658 | { |
60f0fb11 | 6659 | p->update_tick = p->tick; |
d0d6b7c5 | 6660 | |
30623085 | 6661 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6662 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6663 | && ! EQ (p->status, Qconnect) |
e690ca94 | 6664 | && ! EQ (p->status, Qlisten) |
d888760c GM |
6665 | /* Network or serial process not stopped: */ |
6666 | && ! EQ (p->command, Qt) | |
60f0fb11 | 6667 | && p->infd >= 0 |
ff6daed3 | 6668 | && p != deleting_process |
60f0fb11 | 6669 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6670 | |
30623085 | 6671 | buffer = p->buffer; |
d0d6b7c5 | 6672 | |
30623085 | 6673 | /* Get the text to use for the message. */ |
6bfd98e7 | 6674 | if (p->raw_status_new) |
30623085 | 6675 | update_status (p); |
116c423c | 6676 | msg = status_message (p); |
d0d6b7c5 | 6677 | |
30623085 RS |
6678 | /* If process is terminated, deactivate it or delete it. */ |
6679 | symbol = p->status; | |
6680 | if (CONSP (p->status)) | |
70949dac | 6681 | symbol = XCAR (p->status); |
d0d6b7c5 | 6682 | |
30623085 RS |
6683 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6684 | || EQ (symbol, Qclosed)) | |
6685 | { | |
6686 | if (delete_exited_processes) | |
6687 | remove_process (proc); | |
6688 | else | |
6689 | deactivate_process (proc); | |
6690 | } | |
d0d6b7c5 | 6691 | |
0ad61fe7 RS |
6692 | /* The actions above may have further incremented p->tick. |
6693 | So set p->update_tick again | |
6694 | so that an error in the sentinel will not cause | |
6695 | this code to be run again. */ | |
60f0fb11 | 6696 | p->update_tick = p->tick; |
30623085 RS |
6697 | /* Now output the message suitably. */ |
6698 | if (!NILP (p->sentinel)) | |
6699 | exec_sentinel (proc, msg); | |
6700 | /* Don't bother with a message in the buffer | |
6701 | when a process becomes runnable. */ | |
6702 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6703 | { | |
01f5787b | 6704 | Lisp_Object tem; |
30623085 | 6705 | struct buffer *old = current_buffer; |
f877c546 EZ |
6706 | EMACS_INT opoint, opoint_byte; |
6707 | EMACS_INT before, before_byte; | |
2e4149a8 | 6708 | |
30623085 RS |
6709 | /* Avoid error if buffer is deleted |
6710 | (probably that's why the process is dead, too) */ | |
4b4deea2 | 6711 | if (NILP (BVAR (XBUFFER (buffer), name))) |
30623085 RS |
6712 | continue; |
6713 | Fset_buffer (buffer); | |
12ca5cdf | 6714 | |
6ec8bbd2 | 6715 | opoint = PT; |
d8a2934e | 6716 | opoint_byte = PT_BYTE; |
30623085 RS |
6717 | /* Insert new output into buffer |
6718 | at the current end-of-output marker, | |
6719 | thus preserving logical ordering of input and output. */ | |
6720 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6721 | Fgoto_char (p->mark); |
30623085 | 6722 | else |
d8a2934e | 6723 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6724 | |
6725 | before = PT; | |
d8a2934e | 6726 | before_byte = PT_BYTE; |
30623085 | 6727 | |
4b4deea2 TT |
6728 | tem = BVAR (current_buffer, read_only); |
6729 | BVAR (current_buffer, read_only) = Qnil; | |
30623085 RS |
6730 | insert_string ("\nProcess "); |
6731 | Finsert (1, &p->name); | |
6732 | insert_string (" "); | |
6733 | Finsert (1, &msg); | |
4b4deea2 | 6734 | BVAR (current_buffer, read_only) = tem; |
d8a2934e | 6735 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6736 | |
12ca5cdf | 6737 | if (opoint >= before) |
d8a2934e RS |
6738 | SET_PT_BOTH (opoint + (PT - before), |
6739 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6740 | else |
d8a2934e | 6741 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6742 | |
30623085 | 6743 | set_buffer_internal (old); |
d0d6b7c5 | 6744 | } |
30623085 RS |
6745 | } |
6746 | } /* end for */ | |
d0d6b7c5 JB |
6747 | |
6748 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6749 | UNGCPRO; |
6750 | } | |
0fa1789e KH |
6751 | |
6752 | \f | |
6753 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6754 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6755 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6756 | DECODING will be used to decode subprocess output and ENCODING to | |
6757 | encode subprocess input. */) | |
5842a27b | 6758 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6759 | { |
6760 | register struct Lisp_Process *p; | |
6761 | ||
f3d9532b JB |
6762 | CHECK_PROCESS (process); |
6763 | p = XPROCESS (process); | |
60f0fb11 | 6764 | if (p->infd < 0) |
d5db4077 | 6765 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6766 | if (p->outfd < 0) |
d5db4077 | 6767 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6768 | Fcheck_coding_system (decoding); |
6769 | Fcheck_coding_system (encoding); | |
76d812bb | 6770 | encoding = coding_inherit_eol_type (encoding, Qnil); |
03f04413 KH |
6771 | p->decode_coding_system = decoding; |
6772 | p->encode_coding_system = encoding; | |
f3d9532b | 6773 | setup_process_coding_systems (process); |
0fa1789e KH |
6774 | |
6775 | return Qnil; | |
6776 | } | |
6777 | ||
6778 | DEFUN ("process-coding-system", | |
6779 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6780 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6781 | (register Lisp_Object process) |
0fa1789e | 6782 | { |
f3d9532b JB |
6783 | CHECK_PROCESS (process); |
6784 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6785 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6786 | } |
03f04413 KH |
6787 | |
6788 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6789 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6790 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6791 | If FLAG is non-nil, the filter is given multibyte strings. | |
6792 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6793 | all character code conversion except for end-of-line conversion is |
6794 | suppressed. */) | |
5842a27b | 6795 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6796 | { |
6797 | register struct Lisp_Process *p; | |
6798 | ||
f3d9532b JB |
6799 | CHECK_PROCESS (process); |
6800 | p = XPROCESS (process); | |
5431bd6a SM |
6801 | if (NILP (flag)) |
6802 | p->decode_coding_system = raw_text_coding_system (p->decode_coding_system); | |
f3d9532b | 6803 | setup_process_coding_systems (process); |
03f04413 KH |
6804 | |
6805 | return Qnil; | |
6806 | } | |
6807 | ||
6808 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6809 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6810 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6811 | (Lisp_Object process) |
03f04413 KH |
6812 | { |
6813 | register struct Lisp_Process *p; | |
5431bd6a | 6814 | struct coding_system *coding; |
03f04413 | 6815 | |
f3d9532b JB |
6816 | CHECK_PROCESS (process); |
6817 | p = XPROCESS (process); | |
5431bd6a SM |
6818 | coding = proc_decode_coding_system[p->infd]; |
6819 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6820 | } |
6821 | ||
6822 | ||
d0d6b7c5 | 6823 | \f |
cb768704 | 6824 | |
994d9841 | 6825 | void |
d3da34e0 | 6826 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6827 | { |
3fad2ad2 | 6828 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6829 | } |
6830 | ||
994d9841 | 6831 | void |
d3da34e0 | 6832 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6833 | { |
3fad2ad2 | 6834 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6835 | } |
6836 | ||
a69281ff RS |
6837 | /* Return nonzero if *MASK has a bit set |
6838 | that corresponds to one of the keyboard input descriptors. */ | |
6839 | ||
ff6daed3 | 6840 | static int |
d3da34e0 | 6841 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6842 | { |
6843 | int fd; | |
6844 | ||
3fad2ad2 | 6845 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6846 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6847 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6848 | return 1; | |
6849 | ||
6850 | return 0; | |
6851 | } | |
934e2a68 | 6852 | |
f388c88a | 6853 | #else /* not subprocesses */ |
934e2a68 | 6854 | |
f388c88a EZ |
6855 | /* Defined on msdos.c. */ |
6856 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
6857 | EMACS_TIME *); | |
934e2a68 | 6858 | |
f388c88a EZ |
6859 | /* Implementation of wait_reading_process_output, assuming that there |
6860 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6861 | |
f388c88a | 6862 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6863 | |
f388c88a EZ |
6864 | time_limit is: |
6865 | timeout in seconds, or | |
6866 | zero for no limit, or | |
6867 | -1 means gobble data immediately available but don't wait for any. | |
934e2a68 | 6868 | |
f388c88a EZ |
6869 | read_kbd is a Lisp_Object: |
6870 | 0 to ignore keyboard input, or | |
6871 | 1 to return when input is available, or | |
6872 | -1 means caller will actually read the input, so don't throw to | |
6873 | the quit handler. | |
934e2a68 | 6874 | |
f388c88a EZ |
6875 | see full version for other parameters. We know that wait_proc will |
6876 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6877 | |
f388c88a EZ |
6878 | do_display != 0 means redisplay should be done to show subprocess |
6879 | output that arrives. | |
934e2a68 | 6880 | |
f388c88a EZ |
6881 | Return true if we received input from any process. */ |
6882 | ||
6883 | int | |
1408902e EZ |
6884 | wait_reading_process_output (int time_limit, int microsecs, int read_kbd, |
6885 | int do_display, | |
6886 | Lisp_Object wait_for_cell, | |
6887 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6888 | { |
f388c88a EZ |
6889 | register int nfds; |
6890 | EMACS_TIME end_time, timeout; | |
6891 | SELECT_TYPE waitchannels; | |
6892 | int xerrno; | |
d0d6b7c5 | 6893 | |
f388c88a EZ |
6894 | /* What does time_limit really mean? */ |
6895 | if (time_limit || microsecs) | |
6896 | { | |
6897 | EMACS_GET_TIME (end_time); | |
6898 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
6899 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
6900 | } | |
84af9896 | 6901 | |
f388c88a EZ |
6902 | /* Turn off periodic alarms (in case they are in use) |
6903 | and then turn off any other atimers, | |
6904 | because the select emulator uses alarms. */ | |
6905 | stop_polling (); | |
6906 | turn_on_atimers (0); | |
d0d6b7c5 | 6907 | |
f388c88a EZ |
6908 | while (1) |
6909 | { | |
6910 | int timeout_reduced_for_timers = 0; | |
dd2281ae | 6911 | |
f388c88a EZ |
6912 | /* If calling from keyboard input, do not quit |
6913 | since we want to return C-g as an input character. | |
6914 | Otherwise, do pending quit if requested. */ | |
6915 | if (read_kbd >= 0) | |
6916 | QUIT; | |
bad49fc7 | 6917 | |
f388c88a EZ |
6918 | /* Exit now if the cell we're waiting for became non-nil. */ |
6919 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6920 | break; | |
0a65b032 | 6921 | |
bae8d137 RS |
6922 | /* Compute time from now till when time limit is up */ |
6923 | /* Exit if already run out */ | |
52fd88d3 EZ |
6924 | if (time_limit == -1) |
6925 | { | |
6926 | /* -1 specified for timeout means | |
6927 | gobble output available now | |
6928 | but don't wait at all. */ | |
6929 | ||
6930 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
6931 | } | |
6932 | else if (time_limit || microsecs) | |
6720a7fb | 6933 | { |
f694e5d2 KH |
6934 | EMACS_GET_TIME (timeout); |
6935 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
6936 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
6937 | break; |
6938 | } | |
52fd88d3 EZ |
6939 | else |
6940 | { | |
6941 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
6942 | } | |
6720a7fb | 6943 | |
bae8d137 RS |
6944 | /* If our caller will not immediately handle keyboard events, |
6945 | run timer events directly. | |
6946 | (Callers that will immediately read keyboard events | |
6947 | call timer_delay on their own.) */ | |
f3fbd155 | 6948 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6949 | { |
6950 | EMACS_TIME timer_delay; | |
0a65b032 | 6951 | |
9baacf76 | 6952 | do |
0a65b032 | 6953 | { |
9baacf76 GM |
6954 | int old_timers_run = timers_run; |
6955 | timer_delay = timer_check (1); | |
6956 | if (timers_run != old_timers_run && do_display) | |
6957 | /* We must retry, since a timer may have requeued itself | |
6958 | and that could alter the time delay. */ | |
3007ebfb | 6959 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6960 | else |
6961 | break; | |
0a65b032 | 6962 | } |
9baacf76 | 6963 | while (!detect_input_pending ()); |
0a65b032 | 6964 | |
52fd88d3 | 6965 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6966 | if (read_kbd != 0 |
52fd88d3 EZ |
6967 | && requeued_events_pending_p ()) |
6968 | break; | |
6969 | ||
f694e5d2 | 6970 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
6971 | { |
6972 | EMACS_TIME difference; | |
f694e5d2 | 6973 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
6974 | if (EMACS_TIME_NEG_P (difference)) |
6975 | { | |
f694e5d2 | 6976 | timeout = timer_delay; |
bae8d137 RS |
6977 | timeout_reduced_for_timers = 1; |
6978 | } | |
6979 | } | |
6980 | } | |
6981 | ||
6720a7fb JB |
6982 | /* Cause C-g and alarm signals to take immediate action, |
6983 | and cause input available signals to zero out timeout. */ | |
b89a415a | 6984 | if (read_kbd < 0) |
6720a7fb JB |
6985 | set_waiting_for_input (&timeout); |
6986 | ||
0a65b032 RS |
6987 | /* Wait till there is something to do. */ |
6988 | ||
b89a415a | 6989 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
6990 | FD_ZERO (&waitchannels); |
6991 | else | |
6992 | FD_SET (0, &waitchannels); | |
6993 | ||
ff11dfa1 | 6994 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6995 | reprocess its display stuff. */ |
5164ee8e | 6996 | if (frame_garbaged && do_display) |
0a65b032 RS |
6997 | { |
6998 | clear_waiting_for_input (); | |
3007ebfb | 6999 | redisplay_preserve_echo_area (15); |
b89a415a | 7000 | if (read_kbd < 0) |
0a65b032 RS |
7001 | set_waiting_for_input (&timeout); |
7002 | } | |
6720a7fb | 7003 | |
b89a415a | 7004 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
7005 | { |
7006 | nfds = 0; | |
7007 | FD_ZERO (&waitchannels); | |
7008 | } | |
7009 | else | |
7010 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7011 | &timeout); | |
f694e5d2 KH |
7012 | |
7013 | xerrno = errno; | |
6720a7fb JB |
7014 | |
7015 | /* Make C-g and alarm signals set flags again */ | |
7016 | clear_waiting_for_input (); | |
7017 | ||
7018 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7019 | do_pending_window_change (0); |
6720a7fb | 7020 | |
f694e5d2 KH |
7021 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7022 | /* We waited the full specified time, so return now. */ | |
7023 | break; | |
7024 | ||
6720a7fb JB |
7025 | if (nfds == -1) |
7026 | { | |
7027 | /* If the system call was interrupted, then go around the | |
7028 | loop again. */ | |
f694e5d2 | 7029 | if (xerrno == EINTR) |
8db121c4 | 7030 | FD_ZERO (&waitchannels); |
f694e5d2 | 7031 | else |
68c45bf0 | 7032 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 7033 | } |
6720a7fb | 7034 | |
f694e5d2 KH |
7035 | /* Check for keyboard input */ |
7036 | ||
b89a415a | 7037 | if (read_kbd |
78c1afb6 | 7038 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7039 | { |
78c1afb6 | 7040 | swallow_events (do_display); |
f694e5d2 | 7041 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7042 | break; |
78c1afb6 EZ |
7043 | } |
7044 | ||
52fd88d3 | 7045 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7046 | if (read_kbd |
52fd88d3 EZ |
7047 | && requeued_events_pending_p ()) |
7048 | break; | |
7049 | ||
f854a00b RS |
7050 | /* If wait_for_cell. check for keyboard input |
7051 | but don't run any timers. | |
7052 | ??? (It seems wrong to me to check for keyboard | |
7053 | input at all when wait_for_cell, but the code | |
7054 | has been this way since July 1994. | |
7055 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7056 | if (! NILP (wait_for_cell) |
f854a00b RS |
7057 | && detect_input_pending ()) |
7058 | { | |
7059 | swallow_events (do_display); | |
7060 | if (detect_input_pending ()) | |
7061 | break; | |
7062 | } | |
7063 | ||
0a65b032 | 7064 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7065 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7066 | break; |
6720a7fb JB |
7067 | } |
7068 | ||
a87b802f JB |
7069 | start_polling (); |
7070 | ||
6720a7fb JB |
7071 | return 0; |
7072 | } | |
7073 | ||
f388c88a EZ |
7074 | #endif /* not subprocesses */ |
7075 | ||
7076 | /* The following functions are needed even if async subprocesses are | |
7077 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 7078 | |
01faa934 DN |
7079 | /* Add DESC to the set of keyboard input descriptors. */ |
7080 | ||
7081 | void | |
7082 | add_keyboard_wait_descriptor (int desc) | |
7083 | { | |
bf05eed6 | 7084 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
7085 | FD_SET (desc, &input_wait_mask); |
7086 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
7087 | if (desc > max_input_desc) |
7088 | max_input_desc = desc; | |
bf05eed6 | 7089 | #endif |
01faa934 DN |
7090 | } |
7091 | ||
7092 | /* From now on, do not expect DESC to give keyboard input. */ | |
7093 | ||
7094 | void | |
7095 | delete_keyboard_wait_descriptor (int desc) | |
7096 | { | |
bf05eed6 | 7097 | #ifdef subprocesses |
01faa934 | 7098 | int fd; |
3fad2ad2 | 7099 | int lim = max_input_desc; |
01faa934 DN |
7100 | |
7101 | FD_CLR (desc, &input_wait_mask); | |
7102 | FD_CLR (desc, &non_process_wait_mask); | |
7103 | ||
3fad2ad2 | 7104 | if (desc == max_input_desc) |
01faa934 | 7105 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
7106 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
7107 | max_input_desc = fd; | |
bf05eed6 | 7108 | #endif |
01faa934 DN |
7109 | } |
7110 | ||
fc549af9 EZ |
7111 | /* Setup coding systems of PROCESS. */ |
7112 | ||
7113 | void | |
7114 | setup_process_coding_systems (Lisp_Object process) | |
7115 | { | |
7116 | #ifdef subprocesses | |
7117 | struct Lisp_Process *p = XPROCESS (process); | |
7118 | int inch = p->infd; | |
7119 | int outch = p->outfd; | |
7120 | Lisp_Object coding_system; | |
7121 | ||
7122 | if (inch < 0 || outch < 0) | |
7123 | return; | |
7124 | ||
7125 | if (!proc_decode_coding_system[inch]) | |
7126 | proc_decode_coding_system[inch] | |
7127 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
7128 | coding_system = p->decode_coding_system; | |
7129 | if (! NILP (p->filter)) | |
7130 | ; | |
7131 | else if (BUFFERP (p->buffer)) | |
7132 | { | |
4b4deea2 | 7133 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
7134 | coding_system = raw_text_coding_system (coding_system); |
7135 | } | |
7136 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7137 | ||
7138 | if (!proc_encode_coding_system[outch]) | |
7139 | proc_encode_coding_system[outch] | |
7140 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
7141 | setup_coding_system (p->encode_coding_system, | |
7142 | proc_encode_coding_system[outch]); | |
7143 | #endif | |
7144 | } | |
7145 | ||
7146 | /* Close all descriptors currently in use for communication | |
7147 | with subprocess. This is used in a newly-forked subprocess | |
7148 | to get rid of irrelevant descriptors. */ | |
7149 | ||
7150 | void | |
7151 | close_process_descs (void) | |
7152 | { | |
7153 | #ifndef DOS_NT | |
7154 | int i; | |
7155 | for (i = 0; i < MAXDESC; i++) | |
7156 | { | |
7157 | Lisp_Object process; | |
7158 | process = chan_process[i]; | |
7159 | if (!NILP (process)) | |
7160 | { | |
7161 | int in = XPROCESS (process)->infd; | |
7162 | int out = XPROCESS (process)->outfd; | |
7163 | if (in >= 0) | |
7164 | emacs_close (in); | |
7165 | if (out >= 0 && in != out) | |
7166 | emacs_close (out); | |
7167 | } | |
7168 | } | |
7169 | #endif | |
7170 | } | |
7171 | ||
6720a7fb | 7172 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7173 | doc: /* Return the (or a) process associated with BUFFER. |
7174 | BUFFER may be a buffer or the name of one. */) | |
7175 | (register Lisp_Object buffer) | |
6720a7fb | 7176 | { |
f388c88a EZ |
7177 | #ifdef subprocesses |
7178 | register Lisp_Object buf, tail, proc; | |
7179 | ||
7180 | if (NILP (buffer)) return Qnil; | |
7181 | buf = Fget_buffer (buffer); | |
7182 | if (NILP (buf)) return Qnil; | |
7183 | ||
7184 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7185 | { | |
7186 | proc = Fcdr (XCAR (tail)); | |
7187 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) | |
7188 | return proc; | |
7189 | } | |
7190 | #endif /* subprocesses */ | |
6720a7fb JB |
7191 | return Qnil; |
7192 | } | |
7193 | ||
52a1b894 | 7194 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7195 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7196 | 1, 1, 0, | |
f388c88a EZ |
7197 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7198 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7199 | associated with PROCESS will inherit the coding system used to decode | |
7200 | the process output. */) | |
5842a27b | 7201 | (register Lisp_Object process) |
52a1b894 | 7202 | { |
f388c88a EZ |
7203 | #ifdef subprocesses |
7204 | CHECK_PROCESS (process); | |
7205 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7206 | #else | |
52a1b894 EZ |
7207 | /* Ignore the argument and return the value of |
7208 | inherit-process-coding-system. */ | |
7209 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7210 | #endif |
52a1b894 EZ |
7211 | } |
7212 | ||
6720a7fb | 7213 | /* Kill all processes associated with `buffer'. |
f388c88a | 7214 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7215 | |
d9bb0c32 | 7216 | void |
f388c88a | 7217 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7218 | { |
f388c88a EZ |
7219 | #ifdef subprocesses |
7220 | Lisp_Object tail, proc; | |
7221 | ||
7222 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7223 | { | |
7224 | proc = XCDR (XCAR (tail)); | |
7225 | if (PROCESSP (proc) | |
7226 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) | |
7227 | { | |
7228 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7229 | Fdelete_process (proc); | |
7230 | else if (XPROCESS (proc)->infd >= 0) | |
7231 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7232 | } | |
7233 | } | |
7234 | #else /* subprocesses */ | |
7235 | /* Since we have no subprocesses, this does nothing. */ | |
7236 | #endif /* subprocesses */ | |
6720a7fb JB |
7237 | } |
7238 | ||
77defa9a EZ |
7239 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, |
7240 | 0, 0, 0, | |
7241 | doc: /* Returns non-nil if Emacs is waiting for input from the user. | |
7242 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7243 | (void) | |
7244 | { | |
7245 | #ifdef subprocesses | |
7246 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7247 | #else | |
7248 | return Qnil; | |
7249 | #endif | |
7250 | } | |
7251 | ||
d568829b EZ |
7252 | /* Stop reading input from keyboard sources. */ |
7253 | ||
7254 | void | |
7255 | hold_keyboard_input (void) | |
7256 | { | |
7257 | kbd_is_on_hold = 1; | |
7258 | } | |
7259 | ||
7260 | /* Resume reading input from keyboard sources. */ | |
7261 | ||
7262 | void | |
7263 | unhold_keyboard_input (void) | |
7264 | { | |
7265 | kbd_is_on_hold = 0; | |
7266 | } | |
7267 | ||
7268 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7269 | ||
7270 | int | |
7271 | kbd_on_hold_p (void) | |
7272 | { | |
7273 | return kbd_is_on_hold; | |
7274 | } | |
7275 | ||
f388c88a EZ |
7276 | \f |
7277 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7278 | ||
934e2a68 EZ |
7279 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7280 | 0, 0, 0, | |
7281 | doc: /* Return a list of numerical process IDs of all running processes. | |
7282 | If this functionality is unsupported, return nil. | |
7283 | ||
f388c88a EZ |
7284 | See `process-attributes' for getting attributes of a process given its ID. */) |
7285 | (void) | |
7286 | { | |
7287 | return list_system_processes (); | |
7288 | } | |
7289 | ||
7290 | DEFUN ("process-attributes", Fprocess_attributes, | |
7291 | Sprocess_attributes, 1, 1, 0, | |
7292 | doc: /* Return attributes of the process given by its PID, a number. | |
7293 | ||
7294 | Value is an alist where each element is a cons cell of the form | |
7295 | ||
7296 | \(KEY . VALUE) | |
7297 | ||
7298 | If this functionality is unsupported, the value is nil. | |
7299 | ||
7300 | See `list-system-processes' for getting a list of all process IDs. | |
7301 | ||
7302 | The KEYs of the attributes that this function may return are listed | |
7303 | below, together with the type of the associated VALUE (in parentheses). | |
7304 | Not all platforms support all of these attributes; unsupported | |
7305 | attributes will not appear in the returned alist. | |
7306 | Unless explicitly indicated otherwise, numbers can have either | |
7307 | integer or floating point values. | |
7308 | ||
7309 | euid -- Effective user User ID of the process (number) | |
7310 | user -- User name corresponding to euid (string) | |
7311 | egid -- Effective user Group ID of the process (number) | |
7312 | group -- Group name corresponding to egid (string) | |
7313 | comm -- Command name (executable name only) (string) | |
7314 | state -- Process state code, such as "S", "R", or "T" (string) | |
7315 | ppid -- Parent process ID (number) | |
7316 | pgrp -- Process group ID (number) | |
7317 | sess -- Session ID, i.e. process ID of session leader (number) | |
7318 | ttname -- Controlling tty name (string) | |
7319 | tpgid -- ID of foreground process group on the process's tty (number) | |
7320 | minflt -- number of minor page faults (number) | |
7321 | majflt -- number of major page faults (number) | |
7322 | cminflt -- cumulative number of minor page faults (number) | |
7323 | cmajflt -- cumulative number of major page faults (number) | |
7324 | utime -- user time used by the process, in the (HIGH LOW USEC) format | |
7325 | stime -- system time used by the process, in the (HIGH LOW USEC) format | |
7326 | time -- sum of utime and stime, in the (HIGH LOW USEC) format | |
7327 | cutime -- user time used by the process and its children, (HIGH LOW USEC) | |
7328 | cstime -- system time used by the process and its children, (HIGH LOW USEC) | |
7329 | ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format | |
7330 | pri -- priority of the process (number) | |
7331 | nice -- nice value of the process (number) | |
7332 | thcount -- process thread count (number) | |
7333 | start -- time the process started, in the (HIGH LOW USEC) format | |
7334 | vsize -- virtual memory size of the process in KB's (number) | |
7335 | rss -- resident set size of the process in KB's (number) | |
7336 | etime -- elapsed time the process is running, in (HIGH LOW USEC) format | |
7337 | pcpu -- percents of CPU time used by the process (floating-point number) | |
7338 | pmem -- percents of total physical memory used by process's resident set | |
7339 | (floating-point number) | |
7340 | args -- command line which invoked the process (string). */) | |
7341 | ( Lisp_Object pid) | |
7342 | { | |
7343 | return system_process_attributes (pid); | |
7344 | } | |
7345 | ||
7346 | \f | |
7347 | void | |
7348 | init_process (void) | |
7349 | { | |
7350 | #ifdef subprocesses | |
7351 | register int i; | |
7352 | ||
7353 | inhibit_sentinels = 0; | |
7354 | ||
7355 | #ifdef SIGCHLD | |
7356 | #ifndef CANNOT_DUMP | |
7357 | if (! noninteractive || initialized) | |
7358 | #endif | |
7359 | signal (SIGCHLD, sigchld_handler); | |
7360 | #endif | |
7361 | ||
7362 | FD_ZERO (&input_wait_mask); | |
7363 | FD_ZERO (&non_keyboard_wait_mask); | |
7364 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7365 | FD_ZERO (&write_mask); |
f388c88a | 7366 | max_process_desc = 0; |
3fad2ad2 | 7367 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7368 | |
7369 | #ifdef NON_BLOCKING_CONNECT | |
7370 | FD_ZERO (&connect_wait_mask); | |
7371 | num_pending_connects = 0; | |
7372 | #endif | |
7373 | ||
7374 | #ifdef ADAPTIVE_READ_BUFFERING | |
7375 | process_output_delay_count = 0; | |
7376 | process_output_skip = 0; | |
7377 | #endif | |
7378 | ||
7379 | /* Don't do this, it caused infinite select loops. The display | |
7380 | method should call add_keyboard_wait_descriptor on stdin if it | |
7381 | needs that. */ | |
7382 | #if 0 | |
7383 | FD_SET (0, &input_wait_mask); | |
7384 | #endif | |
7385 | ||
7386 | Vprocess_alist = Qnil; | |
7387 | #ifdef SIGCHLD | |
7388 | deleted_pid_list = Qnil; | |
7389 | #endif | |
7390 | for (i = 0; i < MAXDESC; i++) | |
7391 | { | |
7392 | chan_process[i] = Qnil; | |
7393 | proc_buffered_char[i] = -1; | |
7394 | } | |
7395 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7396 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7397 | #ifdef DATAGRAM_SOCKETS | |
7398 | memset (datagram_address, 0, sizeof datagram_address); | |
7399 | #endif | |
7400 | ||
f388c88a EZ |
7401 | { |
7402 | Lisp_Object subfeatures = Qnil; | |
7403 | const struct socket_options *sopt; | |
7404 | ||
7405 | #define ADD_SUBFEATURE(key, val) \ | |
7406 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7407 | ||
7408 | #ifdef NON_BLOCKING_CONNECT | |
7409 | ADD_SUBFEATURE (QCnowait, Qt); | |
7410 | #endif | |
7411 | #ifdef DATAGRAM_SOCKETS | |
7412 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7413 | #endif | |
7414 | #ifdef HAVE_SEQPACKET | |
7415 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7416 | #endif | |
7417 | #ifdef HAVE_LOCAL_SOCKETS | |
7418 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7419 | #endif | |
7420 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7421 | #ifdef AF_INET6 | |
7422 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7423 | #endif | |
7424 | #ifdef HAVE_GETSOCKNAME | |
7425 | ADD_SUBFEATURE (QCservice, Qt); | |
7426 | #endif | |
7427 | #if defined(O_NONBLOCK) || defined(O_NDELAY) | |
7428 | ADD_SUBFEATURE (QCserver, Qt); | |
7429 | #endif | |
7430 | ||
7431 | for (sopt = socket_options; sopt->name; sopt++) | |
7432 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7433 | ||
7434 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7435 | } | |
f388c88a EZ |
7436 | |
7437 | #if defined (DARWIN_OS) | |
7438 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7439 | processes. As such, we only change the default value. */ | |
7440 | if (initialized) | |
7441 | { | |
8ea90aa3 | 7442 | const char *release = get_operating_system_release (); |
f388c88a EZ |
7443 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION |
7444 | && release[1] == '.')) { | |
7445 | Vprocess_connection_type = Qnil; | |
7446 | } | |
7447 | } | |
7448 | #endif | |
7449 | #endif /* subprocesses */ | |
7450 | kbd_is_on_hold = 0; | |
7451 | } | |
7452 | ||
7453 | void | |
7454 | syms_of_process (void) | |
7455 | { | |
7456 | #ifdef subprocesses | |
7457 | ||
7458 | Qprocessp = intern_c_string ("processp"); | |
7459 | staticpro (&Qprocessp); | |
7460 | Qrun = intern_c_string ("run"); | |
7461 | staticpro (&Qrun); | |
7462 | Qstop = intern_c_string ("stop"); | |
7463 | staticpro (&Qstop); | |
7464 | Qsignal = intern_c_string ("signal"); | |
7465 | staticpro (&Qsignal); | |
7466 | ||
7467 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7468 | here again. | |
934e2a68 | 7469 | |
f388c88a EZ |
7470 | Qexit = intern_c_string ("exit"); |
7471 | staticpro (&Qexit); */ | |
934e2a68 | 7472 | |
f388c88a EZ |
7473 | Qopen = intern_c_string ("open"); |
7474 | staticpro (&Qopen); | |
7475 | Qclosed = intern_c_string ("closed"); | |
7476 | staticpro (&Qclosed); | |
7477 | Qconnect = intern_c_string ("connect"); | |
7478 | staticpro (&Qconnect); | |
7479 | Qfailed = intern_c_string ("failed"); | |
7480 | staticpro (&Qfailed); | |
7481 | Qlisten = intern_c_string ("listen"); | |
7482 | staticpro (&Qlisten); | |
7483 | Qlocal = intern_c_string ("local"); | |
7484 | staticpro (&Qlocal); | |
7485 | Qipv4 = intern_c_string ("ipv4"); | |
7486 | staticpro (&Qipv4); | |
7487 | #ifdef AF_INET6 | |
7488 | Qipv6 = intern_c_string ("ipv6"); | |
7489 | staticpro (&Qipv6); | |
7490 | #endif | |
7491 | Qdatagram = intern_c_string ("datagram"); | |
7492 | staticpro (&Qdatagram); | |
7493 | Qseqpacket = intern_c_string ("seqpacket"); | |
7494 | staticpro (&Qseqpacket); | |
934e2a68 | 7495 | |
f388c88a EZ |
7496 | QCport = intern_c_string (":port"); |
7497 | staticpro (&QCport); | |
7498 | QCspeed = intern_c_string (":speed"); | |
7499 | staticpro (&QCspeed); | |
7500 | QCprocess = intern_c_string (":process"); | |
7501 | staticpro (&QCprocess); | |
934e2a68 | 7502 | |
f388c88a EZ |
7503 | QCbytesize = intern_c_string (":bytesize"); |
7504 | staticpro (&QCbytesize); | |
7505 | QCstopbits = intern_c_string (":stopbits"); | |
7506 | staticpro (&QCstopbits); | |
7507 | QCparity = intern_c_string (":parity"); | |
7508 | staticpro (&QCparity); | |
7509 | Qodd = intern_c_string ("odd"); | |
7510 | staticpro (&Qodd); | |
7511 | Qeven = intern_c_string ("even"); | |
7512 | staticpro (&Qeven); | |
7513 | QCflowcontrol = intern_c_string (":flowcontrol"); | |
7514 | staticpro (&QCflowcontrol); | |
7515 | Qhw = intern_c_string ("hw"); | |
7516 | staticpro (&Qhw); | |
7517 | Qsw = intern_c_string ("sw"); | |
7518 | staticpro (&Qsw); | |
7519 | QCsummary = intern_c_string (":summary"); | |
7520 | staticpro (&QCsummary); | |
934e2a68 | 7521 | |
f388c88a EZ |
7522 | Qreal = intern_c_string ("real"); |
7523 | staticpro (&Qreal); | |
7524 | Qnetwork = intern_c_string ("network"); | |
7525 | staticpro (&Qnetwork); | |
7526 | Qserial = intern_c_string ("serial"); | |
7527 | staticpro (&Qserial); | |
7528 | QCbuffer = intern_c_string (":buffer"); | |
7529 | staticpro (&QCbuffer); | |
7530 | QChost = intern_c_string (":host"); | |
7531 | staticpro (&QChost); | |
7532 | QCservice = intern_c_string (":service"); | |
7533 | staticpro (&QCservice); | |
7534 | QClocal = intern_c_string (":local"); | |
7535 | staticpro (&QClocal); | |
7536 | QCremote = intern_c_string (":remote"); | |
7537 | staticpro (&QCremote); | |
7538 | QCcoding = intern_c_string (":coding"); | |
7539 | staticpro (&QCcoding); | |
7540 | QCserver = intern_c_string (":server"); | |
7541 | staticpro (&QCserver); | |
7542 | QCnowait = intern_c_string (":nowait"); | |
7543 | staticpro (&QCnowait); | |
7544 | QCsentinel = intern_c_string (":sentinel"); | |
7545 | staticpro (&QCsentinel); | |
7546 | QClog = intern_c_string (":log"); | |
7547 | staticpro (&QClog); | |
7548 | QCnoquery = intern_c_string (":noquery"); | |
7549 | staticpro (&QCnoquery); | |
7550 | QCstop = intern_c_string (":stop"); | |
7551 | staticpro (&QCstop); | |
7552 | QCoptions = intern_c_string (":options"); | |
7553 | staticpro (&QCoptions); | |
7554 | QCplist = intern_c_string (":plist"); | |
7555 | staticpro (&QCplist); | |
934e2a68 | 7556 | |
f388c88a EZ |
7557 | Qlast_nonmenu_event = intern_c_string ("last-nonmenu-event"); |
7558 | staticpro (&Qlast_nonmenu_event); | |
934e2a68 | 7559 | |
f388c88a EZ |
7560 | staticpro (&Vprocess_alist); |
7561 | #ifdef SIGCHLD | |
7562 | staticpro (&deleted_pid_list); | |
7563 | #endif | |
934e2a68 | 7564 | |
f388c88a | 7565 | #endif /* subprocesses */ |
6720a7fb | 7566 | |
d67b4f80 | 7567 | QCname = intern_c_string (":name"); |
8c57b2e5 | 7568 | staticpro (&QCname); |
d67b4f80 | 7569 | QCtype = intern_c_string (":type"); |
6a1bab0e | 7570 | staticpro (&QCtype); |
f388c88a | 7571 | |
d67b4f80 | 7572 | Qeuid = intern_c_string ("euid"); |
6a1bab0e | 7573 | staticpro (&Qeuid); |
d67b4f80 | 7574 | Qegid = intern_c_string ("egid"); |
6a1bab0e | 7575 | staticpro (&Qegid); |
d67b4f80 | 7576 | Quser = intern_c_string ("user"); |
6a1bab0e | 7577 | staticpro (&Quser); |
d67b4f80 | 7578 | Qgroup = intern_c_string ("group"); |
6a1bab0e | 7579 | staticpro (&Qgroup); |
d67b4f80 | 7580 | Qcomm = intern_c_string ("comm"); |
6a1bab0e | 7581 | staticpro (&Qcomm); |
d67b4f80 | 7582 | Qstate = intern_c_string ("state"); |
6a1bab0e | 7583 | staticpro (&Qstate); |
d67b4f80 | 7584 | Qppid = intern_c_string ("ppid"); |
6a1bab0e | 7585 | staticpro (&Qppid); |
d67b4f80 | 7586 | Qpgrp = intern_c_string ("pgrp"); |
6a1bab0e | 7587 | staticpro (&Qpgrp); |
d67b4f80 | 7588 | Qsess = intern_c_string ("sess"); |
6a1bab0e | 7589 | staticpro (&Qsess); |
d67b4f80 | 7590 | Qttname = intern_c_string ("ttname"); |
6a1bab0e | 7591 | staticpro (&Qttname); |
d67b4f80 | 7592 | Qtpgid = intern_c_string ("tpgid"); |
6a1bab0e | 7593 | staticpro (&Qtpgid); |
d67b4f80 | 7594 | Qminflt = intern_c_string ("minflt"); |
6a1bab0e | 7595 | staticpro (&Qminflt); |
d67b4f80 | 7596 | Qmajflt = intern_c_string ("majflt"); |
6a1bab0e | 7597 | staticpro (&Qmajflt); |
d67b4f80 | 7598 | Qcminflt = intern_c_string ("cminflt"); |
6a1bab0e | 7599 | staticpro (&Qcminflt); |
d67b4f80 | 7600 | Qcmajflt = intern_c_string ("cmajflt"); |
6a1bab0e | 7601 | staticpro (&Qcmajflt); |
d67b4f80 | 7602 | Qutime = intern_c_string ("utime"); |
6a1bab0e | 7603 | staticpro (&Qutime); |
d67b4f80 | 7604 | Qstime = intern_c_string ("stime"); |
6a1bab0e | 7605 | staticpro (&Qstime); |
d67b4f80 | 7606 | Qtime = intern_c_string ("time"); |
6a1bab0e | 7607 | staticpro (&Qtime); |
d67b4f80 | 7608 | Qcutime = intern_c_string ("cutime"); |
6a1bab0e | 7609 | staticpro (&Qcutime); |
d67b4f80 | 7610 | Qcstime = intern_c_string ("cstime"); |
6a1bab0e | 7611 | staticpro (&Qcstime); |
d67b4f80 | 7612 | Qctime = intern_c_string ("ctime"); |
6a1bab0e | 7613 | staticpro (&Qctime); |
d67b4f80 | 7614 | Qpri = intern_c_string ("pri"); |
6a1bab0e | 7615 | staticpro (&Qpri); |
d67b4f80 | 7616 | Qnice = intern_c_string ("nice"); |
6a1bab0e | 7617 | staticpro (&Qnice); |
d67b4f80 | 7618 | Qthcount = intern_c_string ("thcount"); |
6a1bab0e | 7619 | staticpro (&Qthcount); |
d67b4f80 | 7620 | Qstart = intern_c_string ("start"); |
6a1bab0e | 7621 | staticpro (&Qstart); |
d67b4f80 | 7622 | Qvsize = intern_c_string ("vsize"); |
6a1bab0e | 7623 | staticpro (&Qvsize); |
d67b4f80 | 7624 | Qrss = intern_c_string ("rss"); |
6a1bab0e | 7625 | staticpro (&Qrss); |
d67b4f80 | 7626 | Qetime = intern_c_string ("etime"); |
6a1bab0e | 7627 | staticpro (&Qetime); |
d67b4f80 | 7628 | Qpcpu = intern_c_string ("pcpu"); |
6a1bab0e | 7629 | staticpro (&Qpcpu); |
d67b4f80 | 7630 | Qpmem = intern_c_string ("pmem"); |
6a1bab0e | 7631 | staticpro (&Qpmem); |
d67b4f80 | 7632 | Qargs = intern_c_string ("args"); |
6a1bab0e | 7633 | staticpro (&Qargs); |
9057ff80 | 7634 | |
29208e82 | 7635 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
f388c88a EZ |
7636 | doc: /* *Non-nil means delete processes immediately when they exit. |
7637 | A value of nil means don't delete them until `list-processes' is run. */); | |
7638 | ||
7639 | delete_exited_processes = 1; | |
7640 | ||
462aa963 | 7641 | #ifdef subprocesses |
29208e82 | 7642 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7643 | doc: /* Control type of device used to communicate with subprocesses. |
7644 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7645 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7646 | then a pipe is used in any case. | |
7647 | The value takes effect when `start-process' is called. */); | |
7648 | Vprocess_connection_type = Qt; | |
7649 | ||
7650 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7651 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7652 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7653 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7654 | is read in very small blocks, potentially resulting in very poor performance. | |
7655 | This behavior can be remedied to some extent by setting this variable to a | |
7656 | non-nil value, as it will automatically delay reading from such processes, to | |
7657 | allow them to produce more output before Emacs tries to read it. | |
7658 | If the value is t, the delay is reset after each write to the process; any other | |
7659 | non-nil value means that the delay is not reset on write. | |
7660 | The variable takes effect when `start-process' is called. */); | |
7661 | Vprocess_adaptive_read_buffering = Qt; | |
7662 | #endif | |
7663 | ||
7664 | defsubr (&Sprocessp); | |
7665 | defsubr (&Sget_process); | |
7666 | defsubr (&Sdelete_process); | |
7667 | defsubr (&Sprocess_status); | |
7668 | defsubr (&Sprocess_exit_status); | |
7669 | defsubr (&Sprocess_id); | |
7670 | defsubr (&Sprocess_name); | |
7671 | defsubr (&Sprocess_tty_name); | |
7672 | defsubr (&Sprocess_command); | |
7673 | defsubr (&Sset_process_buffer); | |
7674 | defsubr (&Sprocess_buffer); | |
7675 | defsubr (&Sprocess_mark); | |
7676 | defsubr (&Sset_process_filter); | |
7677 | defsubr (&Sprocess_filter); | |
7678 | defsubr (&Sset_process_sentinel); | |
7679 | defsubr (&Sprocess_sentinel); | |
7680 | defsubr (&Sset_process_window_size); | |
7681 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7682 | defsubr (&Sset_process_query_on_exit_flag); | |
7683 | defsubr (&Sprocess_query_on_exit_flag); | |
7684 | defsubr (&Sprocess_contact); | |
7685 | defsubr (&Sprocess_plist); | |
7686 | defsubr (&Sset_process_plist); | |
7687 | defsubr (&Slist_processes); | |
7688 | defsubr (&Sprocess_list); | |
7689 | defsubr (&Sstart_process); | |
f388c88a EZ |
7690 | defsubr (&Sserial_process_configure); |
7691 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7692 | defsubr (&Sset_network_process_option); |
7693 | defsubr (&Smake_network_process); | |
7694 | defsubr (&Sformat_network_address); | |
d23d8608 | 7695 | #if defined(HAVE_NET_IF_H) |
f388c88a EZ |
7696 | #ifdef SIOCGIFCONF |
7697 | defsubr (&Snetwork_interface_list); | |
7698 | #endif | |
7699 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
7700 | defsubr (&Snetwork_interface_info); | |
7701 | #endif | |
d23d8608 | 7702 | #endif /* defined(HAVE_NET_IF_H) */ |
f388c88a EZ |
7703 | #ifdef DATAGRAM_SOCKETS |
7704 | defsubr (&Sprocess_datagram_address); | |
7705 | defsubr (&Sset_process_datagram_address); | |
7706 | #endif | |
7707 | defsubr (&Saccept_process_output); | |
7708 | defsubr (&Sprocess_send_region); | |
7709 | defsubr (&Sprocess_send_string); | |
7710 | defsubr (&Sinterrupt_process); | |
7711 | defsubr (&Skill_process); | |
7712 | defsubr (&Squit_process); | |
7713 | defsubr (&Sstop_process); | |
7714 | defsubr (&Scontinue_process); | |
7715 | defsubr (&Sprocess_running_child_p); | |
7716 | defsubr (&Sprocess_send_eof); | |
7717 | defsubr (&Ssignal_process); | |
7718 | defsubr (&Swaiting_for_user_input_p); | |
7719 | defsubr (&Sprocess_type); | |
7720 | defsubr (&Sset_process_coding_system); | |
7721 | defsubr (&Sprocess_coding_system); | |
7722 | defsubr (&Sset_process_filter_multibyte); | |
7723 | defsubr (&Sprocess_filter_multibyte_p); | |
7724 | ||
7725 | #endif /* subprocesses */ | |
7726 | ||
6720a7fb | 7727 | defsubr (&Sget_buffer_process); |
52a1b894 | 7728 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7729 | defsubr (&Slist_system_processes); |
a20878b6 | 7730 | defsubr (&Sprocess_attributes); |
6720a7fb | 7731 | } |