Commit | Line | Data |
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d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
95df8112 | 2 | |
acaf905b | 3 | Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2012 |
95df8112 | 4 | Free Software Foundation, Inc. |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
d0d6b7c5 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
d0d6b7c5 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d0d6b7c5 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
68c45bf0 | 23 | #include <signal.h> |
d0d6b7c5 JB |
24 | #include <stdio.h> |
25 | #include <errno.h> | |
26 | #include <setjmp.h> | |
6c60eb9f | 27 | #include <sys/types.h> /* Some typedefs are used in sys/file.h. */ |
d0d6b7c5 JB |
28 | #include <sys/file.h> |
29 | #include <sys/stat.h> | |
d7306fe6 | 30 | #include <setjmp.h> |
934e2a68 | 31 | |
93b4f699 | 32 | #include <unistd.h> |
e98d950b | 33 | #include <fcntl.h> |
e98d950b | 34 | |
0898ca10 JB |
35 | #include "lisp.h" |
36 | ||
f388c88a EZ |
37 | /* Only MS-DOS does not define `subprocesses'. */ |
38 | #ifdef subprocesses | |
39 | ||
d0d6b7c5 JB |
40 | #include <sys/socket.h> |
41 | #include <netdb.h> | |
42 | #include <netinet/in.h> | |
43 | #include <arpa/inet.h> | |
e690ca94 KS |
44 | |
45 | /* Are local (unix) sockets supported? */ | |
4624371d | 46 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
47 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
48 | #define AF_LOCAL AF_UNIX | |
49 | #endif | |
50 | #ifdef AF_LOCAL | |
51 | #define HAVE_LOCAL_SOCKETS | |
52 | #include <sys/un.h> | |
53 | #endif | |
54 | #endif | |
d0d6b7c5 | 55 | |
d0d6b7c5 | 56 | #include <sys/ioctl.h> |
5e617bc2 | 57 | #if defined (HAVE_NET_IF_H) |
32bc6709 DN |
58 | #include <net/if.h> |
59 | #endif /* HAVE_NET_IF_H */ | |
d0d6b7c5 | 60 | |
5e617bc2 | 61 | #if defined (HAVE_IFADDRS_H) |
377538cb JD |
62 | /* Must be after net/if.h */ |
63 | #include <ifaddrs.h> | |
64 | ||
65 | /* We only use structs from this header when we use getifaddrs. */ | |
5e617bc2 | 66 | #if defined (HAVE_NET_IF_DL_H) |
377538cb JD |
67 | #include <net/if_dl.h> |
68 | #endif | |
69 | ||
70 | #endif | |
71 | ||
d0d6b7c5 JB |
72 | #ifdef NEED_BSDTTY |
73 | #include <bsdtty.h> | |
74 | #endif | |
75 | ||
08116b48 CY |
76 | #ifdef HAVE_RES_INIT |
77 | #include <netinet/in.h> | |
78 | #include <arpa/nameser.h> | |
79 | #include <resolv.h> | |
80 | #endif | |
81 | ||
3d608a86 J |
82 | #ifdef HAVE_UTIL_H |
83 | #include <util.h> | |
84 | #endif | |
85 | ||
9bf58201 DN |
86 | #ifdef HAVE_PTY_H |
87 | #include <pty.h> | |
88 | #endif | |
89 | ||
f388c88a EZ |
90 | #endif /* subprocesses */ |
91 | ||
d0d6b7c5 | 92 | #include "systime.h" |
36ebaafa | 93 | #include "systty.h" |
d0d6b7c5 | 94 | |
d0d6b7c5 | 95 | #include "window.h" |
5bbf78c1 | 96 | #include "character.h" |
e5560ff7 | 97 | #include "buffer.h" |
0fa1789e | 98 | #include "coding.h" |
d0d6b7c5 | 99 | #include "process.h" |
428a555e | 100 | #include "frame.h" |
d0d6b7c5 JB |
101 | #include "termhooks.h" |
102 | #include "termopts.h" | |
103 | #include "commands.h" | |
3ec68006 | 104 | #include "keyboard.h" |
ececcbec | 105 | #include "blockinput.h" |
dfcf069d | 106 | #include "dispextern.h" |
e0016554 | 107 | #include "composite.h" |
30904ab7 | 108 | #include "atimer.h" |
f388c88a EZ |
109 | #include "sysselect.h" |
110 | #include "syssignal.h" | |
111 | #include "syswait.h" | |
8af55556 TZ |
112 | #ifdef HAVE_GNUTLS |
113 | #include "gnutls.h" | |
114 | #endif | |
d0d6b7c5 | 115 | |
0949d2b6 | 116 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 | 117 | #include "xgselect.h" |
0949d2b6 | 118 | #endif |
3d608a86 J |
119 | #ifdef HAVE_NS |
120 | #include "nsterm.h" | |
121 | #endif | |
57507bf8 | 122 | |
b8df54ff PE |
123 | /* Work around GCC 4.7.0 bug with strict overflow checking; see |
124 | <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>. | |
125 | These lines can be removed once the GCC bug is fixed. */ | |
126 | #if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__ | |
127 | # pragma GCC diagnostic ignored "-Wstrict-overflow" | |
128 | #endif | |
129 | ||
fdb183d6 DN |
130 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
131 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
132 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
133 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
134 | Lisp_Object QCname, QCtype; | |
135 | \f | |
136 | /* Non-zero if keyboard input is on hold, zero otherwise. */ | |
137 | ||
138 | static int kbd_is_on_hold; | |
139 | ||
fdb183d6 DN |
140 | /* Nonzero means don't run process sentinels. This is used |
141 | when exiting. */ | |
142 | int inhibit_sentinels; | |
143 | ||
f388c88a EZ |
144 | #ifdef subprocesses |
145 | ||
dd2281ae | 146 | Lisp_Object Qprocessp; |
955cbe7b PE |
147 | static Lisp_Object Qrun, Qstop, Qsignal; |
148 | static Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; | |
149 | Lisp_Object Qlocal; | |
150 | static Lisp_Object Qipv4, Qdatagram, Qseqpacket; | |
151 | static Lisp_Object Qreal, Qnetwork, Qserial; | |
e1652a86 | 152 | #ifdef AF_INET6 |
955cbe7b | 153 | static Lisp_Object Qipv6; |
e1652a86 | 154 | #endif |
955cbe7b PE |
155 | static Lisp_Object QCport, QCprocess; |
156 | Lisp_Object QCspeed; | |
d888760c GM |
157 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; |
158 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
955cbe7b PE |
159 | static Lisp_Object QCbuffer, QChost, QCservice; |
160 | static Lisp_Object QClocal, QCremote, QCcoding; | |
161 | static Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; | |
162 | static Lisp_Object QCsentinel, QClog, QCoptions, QCplist; | |
163 | static Lisp_Object Qlast_nonmenu_event; | |
3635ecad JR |
164 | /* QCfamily is declared and initialized in xfaces.c, |
165 | QCfilter in keyboard.c. */ | |
166 | extern Lisp_Object QCfamily, QCfilter; | |
167 | ||
d0d6b7c5 JB |
168 | /* Qexit is declared and initialized in eval.c. */ |
169 | ||
e0f712ba AC |
170 | /* QCfamily is defined in xfaces.c. */ |
171 | extern Lisp_Object QCfamily; | |
172 | /* QCfilter is defined in keyboard.c. */ | |
173 | extern Lisp_Object QCfilter; | |
174 | ||
d888760c GM |
175 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
176 | #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork)) | |
177 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
178 | #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial)) | |
d0d6b7c5 | 179 | |
5f0929a7 RS |
180 | #ifndef HAVE_H_ERRNO |
181 | extern int h_errno; | |
182 | #endif | |
183 | ||
d0d6b7c5 | 184 | /* Number of events of change of status of a process. */ |
e4d81efc | 185 | static EMACS_INT process_tick; |
d0d6b7c5 | 186 | /* Number of events for which the user or sentinel has been notified. */ |
e4d81efc | 187 | static EMACS_INT update_tick; |
d0d6b7c5 | 188 | |
dd2a17ab KS |
189 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
190 | ||
82d6e50b | 191 | /* Only W32 has this, it really means that select can't take write mask. */ |
dd2a17ab KS |
192 | #ifdef BROKEN_NON_BLOCKING_CONNECT |
193 | #undef NON_BLOCKING_CONNECT | |
82d6e50b | 194 | #define SELECT_CANT_DO_WRITE_MASK |
dd2a17ab KS |
195 | #else |
196 | #ifndef NON_BLOCKING_CONNECT | |
dd2a17ab KS |
197 | #ifdef HAVE_SELECT |
198 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
199 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
200 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
201 | #define NON_BLOCKING_CONNECT | |
202 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
203 | #endif /* O_NONBLOCK || O_NDELAY */ | |
204 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
205 | #endif /* HAVE_SELECT */ | |
dd2a17ab KS |
206 | #endif /* NON_BLOCKING_CONNECT */ |
207 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
208 | ||
e690ca94 KS |
209 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
210 | this system. We need to read full packets, so we need a | |
211 | "non-destructive" select. So we require either native select, | |
212 | or emulation of select using FIONREAD. */ | |
213 | ||
e690ca94 KS |
214 | #ifdef BROKEN_DATAGRAM_SOCKETS |
215 | #undef DATAGRAM_SOCKETS | |
216 | #else | |
217 | #ifndef DATAGRAM_SOCKETS | |
e690ca94 KS |
218 | #if defined (HAVE_SELECT) || defined (FIONREAD) |
219 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
220 | #define DATAGRAM_SOCKETS | |
221 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
222 | #endif /* HAVE_SELECT || FIONREAD */ | |
e690ca94 KS |
223 | #endif /* DATAGRAM_SOCKETS */ |
224 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
225 | ||
f00c449b SM |
226 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
227 | # define HAVE_SEQPACKET | |
228 | #endif | |
229 | ||
6b61353c | 230 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
6b61353c KH |
231 | #define ADAPTIVE_READ_BUFFERING |
232 | #endif | |
6b61353c KH |
233 | |
234 | #ifdef ADAPTIVE_READ_BUFFERING | |
d35af63c | 235 | #define READ_OUTPUT_DELAY_INCREMENT (EMACS_TIME_RESOLUTION / 100) |
6b61353c KH |
236 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) |
237 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
238 | ||
db853b7a KS |
239 | /* Number of processes which have a non-zero read_output_delay, |
240 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
241 | |
242 | static int process_output_delay_count; | |
243 | ||
db853b7a | 244 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
245 | |
246 | static int process_output_skip; | |
247 | ||
6b61353c KH |
248 | #else |
249 | #define process_output_delay_count 0 | |
250 | #endif | |
251 | ||
40ccffa6 | 252 | static void create_process (Lisp_Object, char **, Lisp_Object); |
006c5daa | 253 | #ifdef SIGIO |
f57e2426 | 254 | static int keyboard_bit_set (SELECT_TYPE *); |
006c5daa | 255 | #endif |
f57e2426 J |
256 | static void deactivate_process (Lisp_Object); |
257 | static void status_notify (struct Lisp_Process *); | |
258 | static int read_process_output (Lisp_Object, int); | |
259 | static void create_pty (Lisp_Object); | |
41d03b9a | 260 | |
583dcae4 | 261 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 262 | to detect C-g. It isn't actually used when doing interrupt input. */ |
5e617bc2 | 263 | #if defined (HAVE_WINDOW_SYSTEM) && !defined (USE_ASYNC_EVENTS) |
44ade2e9 RS |
264 | #define POLL_FOR_INPUT |
265 | #endif | |
266 | ||
d3da34e0 JB |
267 | static Lisp_Object get_process (register Lisp_Object name); |
268 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 269 | |
f388c88a EZ |
270 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
271 | ||
272 | static SELECT_TYPE input_wait_mask; | |
273 | ||
994d9841 | 274 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
275 | |
276 | static SELECT_TYPE non_keyboard_wait_mask; | |
277 | ||
994d9841 | 278 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
279 | |
280 | static SELECT_TYPE non_process_wait_mask; | |
281 | ||
3fad2ad2 | 282 | /* Mask for selecting for write. */ |
994d9841 | 283 | |
3fad2ad2 | 284 | static SELECT_TYPE write_mask; |
994d9841 | 285 | |
bad49fc7 | 286 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
287 | /* Mask of bits indicating the descriptors that we wait for connect to |
288 | complete on. Once they complete, they are removed from this mask | |
289 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
290 | ||
291 | static SELECT_TYPE connect_wait_mask; | |
292 | ||
293 | /* Number of bits set in connect_wait_mask. */ | |
294 | static int num_pending_connects; | |
f388c88a | 295 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 296 | |
7d0e672e RS |
297 | /* The largest descriptor currently in use for a process object. */ |
298 | static int max_process_desc; | |
299 | ||
3fad2ad2 J |
300 | /* The largest descriptor currently in use for input. */ |
301 | static int max_input_desc; | |
994d9841 | 302 | |
d0d6b7c5 | 303 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
40ccffa6 | 304 | static Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
305 | |
306 | /* Alist of elements (NAME . PROCESS) */ | |
40ccffa6 | 307 | static Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
308 | |
309 | /* Buffered-ahead input char from process, indexed by channel. | |
310 | -1 means empty (no char is buffered). | |
311 | Used on sys V where the only way to tell if there is any | |
312 | output from the process is to read at least one char. | |
313 | Always -1 on systems that support FIONREAD. */ | |
314 | ||
40ccffa6 | 315 | static int proc_buffered_char[MAXDESC]; |
dd2281ae | 316 | |
0fa1789e | 317 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
318 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
319 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 320 | |
e690ca94 KS |
321 | #ifdef DATAGRAM_SOCKETS |
322 | /* Table of `partner address' for datagram sockets. */ | |
40ccffa6 | 323 | static struct sockaddr_and_len { |
e690ca94 KS |
324 | struct sockaddr *sa; |
325 | int len; | |
326 | } datagram_address[MAXDESC]; | |
327 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 328 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
329 | #else |
330 | #define DATAGRAM_CHAN_P(chan) (0) | |
331 | #define DATAGRAM_CONN_P(proc) (0) | |
332 | #endif | |
333 | ||
93b4f699 RS |
334 | /* Maximum number of bytes to send to a pty without an eof. */ |
335 | static int pty_max_bytes; | |
3b9a3dfa | 336 | |
d0d6b7c5 | 337 | \f |
3fad2ad2 | 338 | |
40ccffa6 | 339 | static struct fd_callback_data |
3fad2ad2 J |
340 | { |
341 | fd_callback func; | |
342 | void *data; | |
343 | #define FOR_READ 1 | |
344 | #define FOR_WRITE 2 | |
345 | int condition; /* mask of the defines above. */ | |
346 | } fd_callback_info[MAXDESC]; | |
347 | ||
348 | ||
349 | /* Add a file descriptor FD to be monitored for when read is possible. | |
350 | When read is possible, call FUNC with argument DATA. */ | |
351 | ||
352 | void | |
353 | add_read_fd (int fd, fd_callback func, void *data) | |
354 | { | |
a54e2c05 | 355 | eassert (fd < MAXDESC); |
3fad2ad2 J |
356 | add_keyboard_wait_descriptor (fd); |
357 | ||
358 | fd_callback_info[fd].func = func; | |
359 | fd_callback_info[fd].data = data; | |
360 | fd_callback_info[fd].condition |= FOR_READ; | |
361 | } | |
362 | ||
363 | /* Stop monitoring file descriptor FD for when read is possible. */ | |
364 | ||
365 | void | |
366 | delete_read_fd (int fd) | |
367 | { | |
a54e2c05 | 368 | eassert (fd < MAXDESC); |
3fad2ad2 J |
369 | delete_keyboard_wait_descriptor (fd); |
370 | ||
371 | fd_callback_info[fd].condition &= ~FOR_READ; | |
372 | if (fd_callback_info[fd].condition == 0) | |
373 | { | |
374 | fd_callback_info[fd].func = 0; | |
375 | fd_callback_info[fd].data = 0; | |
376 | } | |
377 | } | |
378 | ||
379 | /* Add a file descriptor FD to be monitored for when write is possible. | |
380 | When write is possible, call FUNC with argument DATA. */ | |
381 | ||
382 | void | |
383 | add_write_fd (int fd, fd_callback func, void *data) | |
384 | { | |
a54e2c05 | 385 | eassert (fd < MAXDESC); |
3fad2ad2 J |
386 | FD_SET (fd, &write_mask); |
387 | if (fd > max_input_desc) | |
388 | max_input_desc = fd; | |
389 | ||
390 | fd_callback_info[fd].func = func; | |
391 | fd_callback_info[fd].data = data; | |
392 | fd_callback_info[fd].condition |= FOR_WRITE; | |
393 | } | |
394 | ||
395 | /* Stop monitoring file descriptor FD for when write is possible. */ | |
396 | ||
397 | void | |
398 | delete_write_fd (int fd) | |
399 | { | |
400 | int lim = max_input_desc; | |
401 | ||
a54e2c05 | 402 | eassert (fd < MAXDESC); |
3fad2ad2 J |
403 | FD_CLR (fd, &write_mask); |
404 | fd_callback_info[fd].condition &= ~FOR_WRITE; | |
405 | if (fd_callback_info[fd].condition == 0) | |
406 | { | |
407 | fd_callback_info[fd].func = 0; | |
408 | fd_callback_info[fd].data = 0; | |
409 | ||
410 | if (fd == max_input_desc) | |
411 | for (fd = lim; fd >= 0; fd--) | |
412 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) | |
413 | { | |
414 | max_input_desc = fd; | |
415 | break; | |
416 | } | |
51b59d79 | 417 | |
3fad2ad2 J |
418 | } |
419 | } | |
420 | ||
421 | \f | |
d0d6b7c5 JB |
422 | /* Compute the Lisp form of the process status, p->status, from |
423 | the numeric status that was returned by `wait'. */ | |
424 | ||
bba104c1 | 425 | static Lisp_Object status_convert (int); |
f9738840 | 426 | |
ff6daed3 | 427 | static void |
d3da34e0 | 428 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 429 | { |
6bfd98e7 | 430 | eassert (p->raw_status_new); |
bba104c1 | 431 | p->status = status_convert (p->raw_status); |
6bfd98e7 | 432 | p->raw_status_new = 0; |
d0d6b7c5 JB |
433 | } |
434 | ||
177c0ea7 | 435 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
436 | the list that we use internally. */ |
437 | ||
ff6daed3 | 438 | static Lisp_Object |
bba104c1 | 439 | status_convert (int w) |
d0d6b7c5 JB |
440 | { |
441 | if (WIFSTOPPED (w)) | |
442 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
443 | else if (WIFEXITED (w)) | |
444 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
445 | WCOREDUMP (w) ? Qt : Qnil)); | |
446 | else if (WIFSIGNALED (w)) | |
447 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
448 | WCOREDUMP (w) ? Qt : Qnil)); | |
449 | else | |
450 | return Qrun; | |
451 | } | |
452 | ||
453 | /* Given a status-list, extract the three pieces of information | |
454 | and store them individually through the three pointers. */ | |
455 | ||
ff6daed3 | 456 | static void |
d3da34e0 | 457 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, int *coredump) |
d0d6b7c5 JB |
458 | { |
459 | Lisp_Object tem; | |
460 | ||
bcd69aea | 461 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
462 | { |
463 | *symbol = l; | |
464 | *code = 0; | |
465 | *coredump = 0; | |
466 | } | |
467 | else | |
468 | { | |
70949dac KR |
469 | *symbol = XCAR (l); |
470 | tem = XCDR (l); | |
471 | *code = XFASTINT (XCAR (tem)); | |
472 | tem = XCDR (tem); | |
d0d6b7c5 JB |
473 | *coredump = !NILP (tem); |
474 | } | |
475 | } | |
476 | ||
477 | /* Return a string describing a process status list. */ | |
478 | ||
116c423c | 479 | static Lisp_Object |
d3da34e0 | 480 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 481 | { |
116c423c | 482 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
483 | Lisp_Object symbol; |
484 | int code, coredump; | |
485 | Lisp_Object string, string2; | |
486 | ||
487 | decode_status (status, &symbol, &code, &coredump); | |
488 | ||
489 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
490 | { | |
68c45bf0 | 491 | char *signame; |
ca9c0567 | 492 | synchronize_system_messages_locale (); |
68c45bf0 | 493 | signame = strsignal (code); |
b97ad9ea | 494 | if (signame == 0) |
66bd43d1 KH |
495 | string = build_string ("unknown"); |
496 | else | |
497 | { | |
498 | int c1, c2; | |
499 | ||
500 | string = make_unibyte_string (signame, strlen (signame)); | |
501 | if (! NILP (Vlocale_coding_system)) | |
502 | string = (code_convert_string_norecord | |
503 | (string, Vlocale_coding_system, 0)); | |
42a5b22f | 504 | c1 = STRING_CHAR (SDATA (string)); |
5da9919f | 505 | c2 = downcase (c1); |
66bd43d1 | 506 | if (c1 != c2) |
4735b74e | 507 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 508 | } |
d0d6b7c5 | 509 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
510 | return concat2 (string, string2); |
511 | } | |
512 | else if (EQ (symbol, Qexit)) | |
513 | { | |
116c423c KS |
514 | if (NETCONN1_P (p)) |
515 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
516 | if (code == 0) |
517 | return build_string ("finished\n"); | |
f2980264 | 518 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 519 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
520 | return concat3 (build_string ("exited abnormally with code "), |
521 | string, string2); | |
d0d6b7c5 | 522 | } |
dd2a17ab KS |
523 | else if (EQ (symbol, Qfailed)) |
524 | { | |
525 | string = Fnumber_to_string (make_number (code)); | |
526 | string2 = build_string ("\n"); | |
e690ca94 KS |
527 | return concat3 (build_string ("failed with code "), |
528 | string, string2); | |
dd2a17ab | 529 | } |
d0d6b7c5 JB |
530 | else |
531 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
532 | } | |
533 | \f | |
534 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 535 | |
9bf58201 DN |
536 | /* The file name of the pty opened by allocate_pty. */ |
537 | static char pty_name[24]; | |
538 | ||
875e6b94 KH |
539 | /* Open an available pty, returning a file descriptor. |
540 | Return -1 on failure. | |
541 | The file name of the terminal corresponding to the pty | |
542 | is left in the variable pty_name. */ | |
543 | ||
ff6daed3 | 544 | static int |
d3da34e0 | 545 | allocate_pty (void) |
d0d6b7c5 | 546 | { |
d0d6b7c5 JB |
547 | int fd; |
548 | ||
549 | #ifdef PTY_ITERATION | |
550 | PTY_ITERATION | |
551 | #else | |
be02381c | 552 | register int c, i; |
d0d6b7c5 JB |
553 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) |
554 | for (i = 0; i < 16; i++) | |
555 | #endif | |
556 | { | |
557 | #ifdef PTY_NAME_SPRINTF | |
558 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
559 | #else |
560 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
561 | #endif /* no PTY_NAME_SPRINTF */ |
562 | ||
4d7c105e RS |
563 | #ifdef PTY_OPEN |
564 | PTY_OPEN; | |
565 | #else /* no PTY_OPEN */ | |
34967d0f | 566 | { |
34967d0f SM |
567 | { /* Some systems name their pseudoterminals so that there are gaps in |
568 | the usual sequence - for example, on HP9000/S700 systems, there | |
569 | are no pseudoterminals with names ending in 'f'. So we wait for | |
570 | three failures in a row before deciding that we've reached the | |
571 | end of the ptys. */ | |
572 | int failed_count = 0; | |
57048744 | 573 | struct stat stb; |
f3d9532b | 574 | |
34967d0f SM |
575 | if (stat (pty_name, &stb) < 0) |
576 | { | |
577 | failed_count++; | |
578 | if (failed_count >= 3) | |
579 | return -1; | |
580 | } | |
581 | else | |
582 | failed_count = 0; | |
32676c08 | 583 | } |
34967d0f SM |
584 | # ifdef O_NONBLOCK |
585 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
586 | # else | |
587 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
588 | # endif | |
34967d0f | 589 | } |
4d7c105e | 590 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
591 | |
592 | if (fd >= 0) | |
593 | { | |
594 | /* check to make certain that both sides are available | |
595 | this avoids a nasty yet stupid bug in rlogins */ | |
596 | #ifdef PTY_TTY_NAME_SPRINTF | |
597 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 598 | #else |
63136da6 | 599 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 600 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
601 | if (access (pty_name, 6) != 0) |
602 | { | |
68c45bf0 | 603 | emacs_close (fd); |
132d0475 | 604 | # ifndef __sgi |
d0d6b7c5 | 605 | continue; |
34967d0f | 606 | # else |
d0d6b7c5 | 607 | return -1; |
132d0475 | 608 | # endif /* __sgi */ |
d0d6b7c5 | 609 | } |
d0d6b7c5 JB |
610 | setup_pty (fd); |
611 | return fd; | |
612 | } | |
613 | } | |
614 | return -1; | |
615 | } | |
616 | #endif /* HAVE_PTYS */ | |
617 | \f | |
ff6daed3 | 618 | static Lisp_Object |
d3da34e0 | 619 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
620 | { |
621 | register Lisp_Object val, tem, name1; | |
622 | register struct Lisp_Process *p; | |
31c286f7 PE |
623 | char suffix[sizeof "<>" + INT_STRLEN_BOUND (printmax_t)]; |
624 | printmax_t i; | |
d0d6b7c5 | 625 | |
98423852 | 626 | p = allocate_process (); |
62efea5e DA |
627 | /* Initialize Lisp data. Note that allocate_process initializes all |
628 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
d0d6b7c5 JB |
629 | p->status = Qrun; |
630 | p->mark = Fmake_marker (); | |
631 | ||
62efea5e DA |
632 | /* Initialize non-Lisp data. Note that allocate_process zeroes out all |
633 | non-Lisp data, so do it only for slots which should not be zero. */ | |
634 | p->infd = -1; | |
635 | p->outfd = -1; | |
6b61353c | 636 | |
8af55556 TZ |
637 | #ifdef HAVE_GNUTLS |
638 | p->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
639 | #endif | |
640 | ||
d0d6b7c5 JB |
641 | /* If name is already in use, modify it until it is unused. */ |
642 | ||
643 | name1 = name; | |
644 | for (i = 1; ; i++) | |
645 | { | |
646 | tem = Fget_process (name1); | |
647 | if (NILP (tem)) break; | |
a8290ec3 | 648 | name1 = concat2 (name, make_formatted_string (suffix, "<%"pMd">", i)); |
d0d6b7c5 JB |
649 | } |
650 | name = name1; | |
651 | p->name = name; | |
23d6bb9c | 652 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
653 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
654 | return val; | |
655 | } | |
656 | ||
ff6daed3 | 657 | static void |
d3da34e0 | 658 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
659 | { |
660 | register Lisp_Object pair; | |
661 | ||
662 | pair = Frassq (proc, Vprocess_alist); | |
663 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
664 | |
665 | deactivate_process (proc); | |
666 | } | |
03f04413 | 667 | |
d0d6b7c5 JB |
668 | \f |
669 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 670 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 671 | (Lisp_Object object) |
d0d6b7c5 | 672 | { |
4ee3e309 | 673 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
674 | } |
675 | ||
676 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 677 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 678 | (register Lisp_Object name) |
d0d6b7c5 | 679 | { |
bcd69aea | 680 | if (PROCESSP (name)) |
d0d6b7c5 | 681 | return name; |
b7826503 | 682 | CHECK_STRING (name); |
d0d6b7c5 JB |
683 | return Fcdr (Fassoc (name, Vprocess_alist)); |
684 | } | |
685 | ||
ebb9e16f JB |
686 | /* This is how commands for the user decode process arguments. It |
687 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
688 | Buffers denote the first process in the buffer, and nil denotes the | |
689 | current buffer. */ | |
d0d6b7c5 | 690 | |
77b221b1 | 691 | static Lisp_Object |
d3da34e0 | 692 | get_process (register Lisp_Object name) |
d0d6b7c5 | 693 | { |
1619761d KH |
694 | register Lisp_Object proc, obj; |
695 | if (STRINGP (name)) | |
696 | { | |
697 | obj = Fget_process (name); | |
698 | if (NILP (obj)) | |
699 | obj = Fget_buffer (name); | |
700 | if (NILP (obj)) | |
d5db4077 | 701 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
702 | } |
703 | else if (NILP (name)) | |
704 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 705 | else |
1619761d KH |
706 | obj = name; |
707 | ||
708 | /* Now obj should be either a buffer object or a process object. | |
709 | */ | |
710 | if (BUFFERP (obj)) | |
d0d6b7c5 | 711 | { |
1619761d | 712 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 713 | if (NILP (proc)) |
4b4deea2 | 714 | error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj), name))); |
d0d6b7c5 | 715 | } |
d0d6b7c5 | 716 | else |
1619761d | 717 | { |
b7826503 | 718 | CHECK_PROCESS (obj); |
1619761d KH |
719 | proc = obj; |
720 | } | |
721 | return proc; | |
d0d6b7c5 JB |
722 | } |
723 | ||
a5cfdda8 KS |
724 | |
725 | #ifdef SIGCHLD | |
726 | /* Fdelete_process promises to immediately forget about the process, but in | |
727 | reality, Emacs needs to remember those processes until they have been | |
728 | treated by sigchld_handler; otherwise this handler would consider the | |
729 | process as being synchronous and say that the synchronous process is | |
730 | dead. */ | |
731 | static Lisp_Object deleted_pid_list; | |
732 | #endif | |
733 | ||
d0d6b7c5 | 734 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
735 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
736 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
737 | nil, indicating the current buffer's process. */) | |
5842a27b | 738 | (register Lisp_Object process) |
d0d6b7c5 | 739 | { |
ff6daed3 KS |
740 | register struct Lisp_Process *p; |
741 | ||
4ee3e309 | 742 | process = get_process (process); |
ff6daed3 KS |
743 | p = XPROCESS (process); |
744 | ||
6bfd98e7 | 745 | p->raw_status_new = 0; |
d888760c | 746 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 747 | { |
ff6daed3 | 748 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
60f0fb11 | 749 | p->tick = ++process_tick; |
ff6daed3 | 750 | status_notify (p); |
e42bdf01 | 751 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 752 | } |
60f0fb11 | 753 | else if (p->infd >= 0) |
d0d6b7c5 | 754 | { |
a5cfdda8 KS |
755 | #ifdef SIGCHLD |
756 | Lisp_Object symbol; | |
d311d28c | 757 | pid_t pid = p->pid; |
a5cfdda8 KS |
758 | |
759 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 760 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
761 | /* GC treated elements set to nil. */ |
762 | Fdelq (Qnil, deleted_pid_list)); | |
763 | /* If the process has already signaled, remove it from the list. */ | |
764 | if (p->raw_status_new) | |
765 | update_status (p); | |
766 | symbol = p->status; | |
767 | if (CONSP (p->status)) | |
768 | symbol = XCAR (p->status); | |
769 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
29ed4d51 CY |
770 | deleted_pid_list |
771 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
772 | else |
773 | #endif | |
774 | { | |
775 | Fkill_process (process, Qnil); | |
776 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ | |
777 | p->status | |
778 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); | |
60f0fb11 | 779 | p->tick = ++process_tick; |
a5cfdda8 | 780 | status_notify (p); |
e42bdf01 | 781 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 782 | } |
d0d6b7c5 | 783 | } |
4ee3e309 | 784 | remove_process (process); |
d0d6b7c5 JB |
785 | return Qnil; |
786 | } | |
787 | \f | |
788 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
789 | doc: /* Return the status of PROCESS. |
790 | The returned value is one of the following symbols: | |
791 | run -- for a process that is running. | |
792 | stop -- for a process stopped but continuable. | |
793 | exit -- for a process that has exited. | |
794 | signal -- for a process that has got a fatal signal. | |
795 | open -- for a network stream connection that is open. | |
e690ca94 | 796 | listen -- for a network stream server that is listening. |
fdb82f93 | 797 | closed -- for a network stream connection that is closed. |
e4984112 KS |
798 | connect -- when waiting for a non-blocking connection to complete. |
799 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
800 | nil -- if arg is a process name and no such process exists. |
801 | PROCESS may be a process, a buffer, the name of a process, or | |
802 | nil, indicating the current buffer's process. */) | |
5842a27b | 803 | (register Lisp_Object process) |
d0d6b7c5 JB |
804 | { |
805 | register struct Lisp_Process *p; | |
806 | register Lisp_Object status; | |
343f4114 | 807 | |
4ee3e309 EN |
808 | if (STRINGP (process)) |
809 | process = Fget_process (process); | |
343f4114 | 810 | else |
4ee3e309 | 811 | process = get_process (process); |
343f4114 | 812 | |
4ee3e309 EN |
813 | if (NILP (process)) |
814 | return process; | |
343f4114 | 815 | |
4ee3e309 | 816 | p = XPROCESS (process); |
6bfd98e7 | 817 | if (p->raw_status_new) |
d0d6b7c5 JB |
818 | update_status (p); |
819 | status = p->status; | |
bcd69aea | 820 | if (CONSP (status)) |
70949dac | 821 | status = XCAR (status); |
d888760c | 822 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 823 | { |
e690ca94 | 824 | if (EQ (status, Qexit)) |
d0d6b7c5 | 825 | status = Qclosed; |
e690ca94 KS |
826 | else if (EQ (p->command, Qt)) |
827 | status = Qstop; | |
828 | else if (EQ (status, Qrun)) | |
829 | status = Qopen; | |
d0d6b7c5 JB |
830 | } |
831 | return status; | |
832 | } | |
833 | ||
834 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
835 | 1, 1, 0, | |
fdb82f93 PJ |
836 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
837 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 838 | (register Lisp_Object process) |
d0d6b7c5 | 839 | { |
b7826503 | 840 | CHECK_PROCESS (process); |
6bfd98e7 | 841 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 EN |
842 | update_status (XPROCESS (process)); |
843 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 844 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
845 | return make_number (0); |
846 | } | |
847 | ||
848 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 849 | doc: /* Return the process id of PROCESS. |
f3d9532b | 850 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 851 | For a network connection, this value is nil. */) |
5842a27b | 852 | (register Lisp_Object process) |
d0d6b7c5 | 853 | { |
d311d28c | 854 | pid_t pid; |
d30fe779 | 855 | |
b7826503 | 856 | CHECK_PROCESS (process); |
d30fe779 EZ |
857 | pid = XPROCESS (process)->pid; |
858 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
859 | } |
860 | ||
861 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
862 | doc: /* Return the name of PROCESS, as a string. |
863 | This is the name of the program invoked in PROCESS, | |
864 | possibly modified to make it unique among process names. */) | |
5842a27b | 865 | (register Lisp_Object process) |
d0d6b7c5 | 866 | { |
b7826503 | 867 | CHECK_PROCESS (process); |
4ee3e309 | 868 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
869 | } |
870 | ||
871 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
872 | doc: /* Return the command that was executed to start PROCESS. |
873 | This is a list of strings, the first string being the program executed | |
874 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
875 | For a network or serial process, this is nil (process is running) or t |
876 | \(process is stopped). */) | |
5842a27b | 877 | (register Lisp_Object process) |
d0d6b7c5 | 878 | { |
b7826503 | 879 | CHECK_PROCESS (process); |
4ee3e309 | 880 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
881 | } |
882 | ||
3b9a3dfa | 883 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
884 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
885 | This is the terminal that the process itself reads and writes on, | |
886 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 887 | (register Lisp_Object process) |
3b9a3dfa | 888 | { |
b7826503 | 889 | CHECK_PROCESS (process); |
4ee3e309 | 890 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
891 | } |
892 | ||
d0d6b7c5 | 893 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 | 894 | 2, 2, 0, |
76147d94 DD |
895 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). |
896 | Return BUFFER. */) | |
5842a27b | 897 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 898 | { |
e690ca94 KS |
899 | struct Lisp_Process *p; |
900 | ||
b7826503 | 901 | CHECK_PROCESS (process); |
d0d6b7c5 | 902 | if (!NILP (buffer)) |
b7826503 | 903 | CHECK_BUFFER (buffer); |
e690ca94 KS |
904 | p = XPROCESS (process); |
905 | p->buffer = buffer; | |
d888760c | 906 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 907 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); |
03f04413 | 908 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
909 | return buffer; |
910 | } | |
911 | ||
912 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
913 | 1, 1, 0, |
914 | doc: /* Return the buffer PROCESS is associated with. | |
915 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 916 | (register Lisp_Object process) |
d0d6b7c5 | 917 | { |
b7826503 | 918 | CHECK_PROCESS (process); |
4ee3e309 | 919 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
920 | } |
921 | ||
922 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
923 | 1, 1, 0, |
924 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 925 | (register Lisp_Object process) |
d0d6b7c5 | 926 | { |
b7826503 | 927 | CHECK_PROCESS (process); |
4ee3e309 | 928 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
929 | } |
930 | ||
931 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
932 | 2, 2, 0, |
933 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 934 | A value of t means stop accepting output from the process. |
3452df9e KS |
935 | |
936 | When a process has a filter, its buffer is not used for output. | |
937 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 938 | passed to the filter. |
3452df9e | 939 | |
fdb82f93 | 940 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
941 | The string argument is normally a multibyte string, except: |
942 | - if the process' input coding system is no-conversion or raw-text, | |
943 | it is a unibyte string (the non-converted input), or else | |
944 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
945 | string (the result of converting the decoded input multibyte | |
946 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 947 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 948 | { |
471f86b9 | 949 | struct Lisp_Process *p; |
177c0ea7 | 950 | |
b7826503 | 951 | CHECK_PROCESS (process); |
471f86b9 GM |
952 | p = XPROCESS (process); |
953 | ||
954 | /* Don't signal an error if the process' input file descriptor | |
955 | is closed. This could make debugging Lisp more difficult, | |
956 | for example when doing something like | |
957 | ||
958 | (setq process (start-process ...)) | |
959 | (debug) | |
960 | (set-process-filter process ...) */ | |
177c0ea7 | 961 | |
60f0fb11 | 962 | if (p->infd >= 0) |
a69281ff | 963 | { |
e690ca94 | 964 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 965 | { |
60f0fb11 SM |
966 | FD_CLR (p->infd, &input_wait_mask); |
967 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 968 | } |
e690ca94 | 969 | else if (EQ (p->filter, Qt) |
d888760c GM |
970 | /* Network or serial process not stopped: */ |
971 | && !EQ (p->command, Qt)) | |
471f86b9 | 972 | { |
60f0fb11 SM |
973 | FD_SET (p->infd, &input_wait_mask); |
974 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 975 | } |
a69281ff | 976 | } |
177c0ea7 | 977 | |
471f86b9 | 978 | p->filter = filter; |
d888760c | 979 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 980 | p->childp = Fplist_put (p->childp, QCfilter, filter); |
03f04413 | 981 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
982 | return filter; |
983 | } | |
984 | ||
985 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
986 | 1, 1, 0, |
987 | doc: /* Returns the filter function of PROCESS; nil if none. | |
988 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 989 | (register Lisp_Object process) |
d0d6b7c5 | 990 | { |
b7826503 | 991 | CHECK_PROCESS (process); |
4ee3e309 | 992 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
993 | } |
994 | ||
995 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
996 | 2, 2, 0, |
997 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
998 | The sentinel is called as a function when the process changes state. | |
999 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 1000 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1001 | { |
6b61353c KH |
1002 | struct Lisp_Process *p; |
1003 | ||
b7826503 | 1004 | CHECK_PROCESS (process); |
6b61353c KH |
1005 | p = XPROCESS (process); |
1006 | ||
1007 | p->sentinel = sentinel; | |
d888760c | 1008 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6b61353c | 1009 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); |
d0d6b7c5 JB |
1010 | return sentinel; |
1011 | } | |
1012 | ||
1013 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1014 | 1, 1, 0, |
1015 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1016 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 1017 | (register Lisp_Object process) |
d0d6b7c5 | 1018 | { |
b7826503 | 1019 | CHECK_PROCESS (process); |
4ee3e309 | 1020 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1021 | } |
1022 | ||
396df322 | 1023 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1024 | Sset_process_window_size, 3, 3, 0, |
1025 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1026 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1027 | { |
b7826503 | 1028 | CHECK_PROCESS (process); |
af5a5a98 AS |
1029 | CHECK_RANGED_INTEGER (height, 0, INT_MAX); |
1030 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); | |
177c0ea7 | 1031 | |
60f0fb11 SM |
1032 | if (XPROCESS (process)->infd < 0 |
1033 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1034 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1035 | return Qnil; |
1036 | else | |
1037 | return Qt; | |
1038 | } | |
1039 | ||
52a1b894 | 1040 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1041 | Fset_process_inherit_coding_system_flag, |
1042 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1043 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1044 | If the second argument FLAG is non-nil, then the variable | |
1045 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1046 | will be bound to the value of the coding system used to decode | |
1047 | the process output. | |
1048 | ||
1049 | This is useful when the coding system specified for the process buffer | |
1050 | leaves either the character code conversion or the end-of-line conversion | |
1051 | unspecified, or if the coding system used to decode the process output | |
1052 | is more appropriate for saving the process buffer. | |
1053 | ||
1054 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1055 | starting the process is an alternative way of setting the inherit flag | |
016a35df GM |
1056 | for the process which will run. |
1057 | ||
1058 | This function returns FLAG. */) | |
5842a27b | 1059 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1060 | { |
b7826503 | 1061 | CHECK_PROCESS (process); |
60f0fb11 | 1062 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1063 | return flag; |
1064 | } | |
1065 | ||
e690ca94 KS |
1066 | DEFUN ("set-process-query-on-exit-flag", |
1067 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1068 | 2, 2, 0, | |
1069 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1070 | If the second argument FLAG is non-nil, Emacs will query the user before |
016a35df GM |
1071 | exiting or killing a buffer if PROCESS is running. This function |
1072 | returns FLAG. */) | |
5842a27b | 1073 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1074 | { |
b7826503 | 1075 | CHECK_PROCESS (process); |
60f0fb11 | 1076 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1077 | return flag; |
d0d6b7c5 | 1078 | } |
312c9964 | 1079 | |
e690ca94 KS |
1080 | DEFUN ("process-query-on-exit-flag", |
1081 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1082 | 1, 1, 0, |
f3d9532b | 1083 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1084 | (register Lisp_Object process) |
de282a05 | 1085 | { |
b7826503 | 1086 | CHECK_PROCESS (process); |
60f0fb11 | 1087 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1088 | } |
1089 | ||
e690ca94 KS |
1090 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, |
1091 | 1, 2, 0, | |
1092 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1093 | For a network or serial connection, the value depends on the optional |
1094 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1095 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1096 | connection. If KEY is t, the complete contact information for the | |
1097 | connection is returned, else the specific value for the keyword KEY is | |
1098 | returned. See `make-network-process' or `make-serial-process' for a | |
1099 | list of keywords. */) | |
5842a27b | 1100 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1101 | { |
1102 | Lisp_Object contact; | |
1103 | ||
1104 | CHECK_PROCESS (process); | |
1105 | contact = XPROCESS (process)->childp; | |
1106 | ||
1107 | #ifdef DATAGRAM_SOCKETS | |
1108 | if (DATAGRAM_CONN_P (process) | |
1109 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1110 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1111 | Fprocess_datagram_address (process)); |
1112 | #endif | |
1113 | ||
d888760c | 1114 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1115 | return contact; |
d888760c | 1116 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1117 | return Fcons (Fplist_get (contact, QChost), |
1118 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1119 | if (NILP (key) && SERIALCONN_P (process)) |
1120 | return Fcons (Fplist_get (contact, QCport), | |
1121 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1122 | return Fplist_get (contact, key); |
de282a05 RS |
1123 | } |
1124 | ||
faa7db08 KS |
1125 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1126 | 1, 1, 0, | |
1127 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1128 | (register Lisp_Object process) |
365aee82 | 1129 | { |
ac4a7584 | 1130 | CHECK_PROCESS (process); |
faa7db08 | 1131 | return XPROCESS (process)->plist; |
ac4a7584 | 1132 | } |
365aee82 | 1133 | |
faa7db08 KS |
1134 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1135 | 2, 2, 0, | |
26a086c6 | 1136 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1137 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1138 | { |
365aee82 | 1139 | CHECK_PROCESS (process); |
faa7db08 | 1140 | CHECK_LIST (plist); |
365aee82 | 1141 | |
faa7db08 | 1142 | XPROCESS (process)->plist = plist; |
26a086c6 | 1143 | return plist; |
365aee82 KS |
1144 | } |
1145 | ||
312c9964 RS |
1146 | #if 0 /* Turned off because we don't currently record this info |
1147 | in the process. Perhaps add it. */ | |
1148 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1149 | doc: /* Return the connection type of PROCESS. |
1150 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1151 | a socket connection. */) | |
5842a27b | 1152 | (Lisp_Object process) |
312c9964 RS |
1153 | { |
1154 | return XPROCESS (process)->type; | |
1155 | } | |
1156 | #endif | |
2a7bb882 | 1157 | |
d888760c GM |
1158 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1159 | doc: /* Return the connection type of PROCESS. | |
1160 | The value is either the symbol `real', `network', or `serial'. | |
1161 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1162 | nil, indicating the current buffer's process. */) | |
5842a27b | 1163 | (Lisp_Object process) |
d888760c GM |
1164 | { |
1165 | Lisp_Object proc; | |
1166 | proc = get_process (process); | |
1167 | return XPROCESS (proc)->type; | |
1168 | } | |
991234f0 | 1169 | |
991234f0 | 1170 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1171 | 1, 2, 0, |
991234f0 | 1172 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1173 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1174 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1175 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1176 | number in the string, even when present in ADDRESS. |
1177 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1178 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1179 | { |
991234f0 KS |
1180 | if (NILP (address)) |
1181 | return Qnil; | |
1182 | ||
1183 | if (STRINGP (address)) /* AF_LOCAL */ | |
1184 | return address; | |
1185 | ||
e1652a86 | 1186 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1187 | { |
1188 | register struct Lisp_Vector *p = XVECTOR (address); | |
d311d28c | 1189 | ptrdiff_t size = p->header.size; |
ded83665 | 1190 | Lisp_Object args[10]; |
0dccee41 | 1191 | int nargs, i; |
991234f0 | 1192 | |
eab3844f | 1193 | if (size == 4 || (size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1194 | { |
1195 | args[0] = build_string ("%d.%d.%d.%d"); | |
1196 | nargs = 4; | |
1197 | } | |
eab3844f | 1198 | else if (size == 5) |
0dccee41 KS |
1199 | { |
1200 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1201 | nargs = 5; | |
1202 | } | |
eab3844f | 1203 | else if (size == 8 || (size == 9 && !NILP (omit_port))) |
e1652a86 KS |
1204 | { |
1205 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1206 | nargs = 8; | |
1207 | } | |
eab3844f | 1208 | else if (size == 9) |
e1652a86 KS |
1209 | { |
1210 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1211 | nargs = 9; | |
1212 | } | |
0dccee41 | 1213 | else |
991234f0 KS |
1214 | return Qnil; |
1215 | ||
0dccee41 | 1216 | for (i = 0; i < nargs; i++) |
cbf23adb | 1217 | { |
d311d28c | 1218 | if (! RANGED_INTEGERP (0, p->contents[i], 65535)) |
cbf23adb JB |
1219 | return Qnil; |
1220 | ||
1221 | if (nargs <= 5 /* IPv4 */ | |
1222 | && i < 4 /* host, not port */ | |
d311d28c | 1223 | && XINT (p->contents[i]) > 255) |
cbf23adb JB |
1224 | return Qnil; |
1225 | ||
1226 | args[i+1] = p->contents[i]; | |
1227 | } | |
1228 | ||
0dccee41 | 1229 | return Fformat (nargs+1, args); |
991234f0 KS |
1230 | } |
1231 | ||
1232 | if (CONSP (address)) | |
1233 | { | |
1234 | Lisp_Object args[2]; | |
1235 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1236 | args[1] = Fcar (address); |
991234f0 | 1237 | return Fformat (2, args); |
991234f0 KS |
1238 | } |
1239 | ||
1240 | return Qnil; | |
1241 | } | |
d0d6b7c5 JB |
1242 | |
1243 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1244 | doc: /* Return a list of all processes. */) |
5842a27b | 1245 | (void) |
d0d6b7c5 JB |
1246 | { |
1247 | return Fmapcar (Qcdr, Vprocess_alist); | |
1248 | } | |
1249 | \f | |
b0310da4 JB |
1250 | /* Starting asynchronous inferior processes. */ |
1251 | ||
d3da34e0 | 1252 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1253 | |
d0d6b7c5 | 1254 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1255 | doc: /* Start a program in a subprocess. Return the process object for it. |
1256 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1257 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1258 | |
1259 | Process output (both standard output and standard error streams) goes | |
1260 | at end of BUFFER, unless you specify an output stream or filter | |
1261 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1262 | this process is not associated with any buffer. |
1263 | ||
6b8bc570 CY |
1264 | PROGRAM is the program file name. It is searched for in `exec-path' |
1265 | (which see). If nil, just associate a pty with the buffer. Remaining | |
1266 | arguments are strings to give program as arguments. | |
320aebc9 | 1267 | |
4b6c5eee EZ |
1268 | If you want to separate standard output from standard error, invoke |
1269 | the command through a shell and redirect one of them using the shell | |
1270 | syntax. | |
320aebc9 | 1271 | |
3ecdf100 | 1272 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
f66c7cf8 | 1273 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 | 1274 | { |
1e30af70 | 1275 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1276 | register unsigned char **new_argv; |
f66c7cf8 | 1277 | ptrdiff_t i; |
d311d28c | 1278 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1279 | |
1280 | buffer = args[1]; | |
1281 | if (!NILP (buffer)) | |
1282 | buffer = Fget_buffer_create (buffer); | |
1283 | ||
1e30af70 JB |
1284 | /* Make sure that the child will be able to chdir to the current |
1285 | buffer's current directory, or its unhandled equivalent. We | |
1286 | can't just have the child check for an error when it does the | |
1287 | chdir, since it's in a vfork. | |
1288 | ||
1289 | We have to GCPRO around this because Fexpand_file_name and | |
1290 | Funhandled_file_name_directory might call a file name handling | |
1291 | function. The argument list is protected by the caller, so all | |
1292 | we really have to worry about is buffer. */ | |
1293 | { | |
1294 | struct gcpro gcpro1, gcpro2; | |
1295 | ||
4b4deea2 | 1296 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1297 | |
1298 | GCPRO2 (buffer, current_dir); | |
1299 | ||
ca319910 SM |
1300 | current_dir = Funhandled_file_name_directory (current_dir); |
1301 | if (NILP (current_dir)) | |
1302 | /* If the file name handler says that current_dir is unreachable, use | |
1303 | a sensible default. */ | |
1304 | current_dir = build_string ("~/"); | |
1305 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1306 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1307 | report_file_error ("Setting current directory", | |
4b4deea2 | 1308 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1309 | |
1310 | UNGCPRO; | |
1311 | } | |
1312 | ||
d0d6b7c5 | 1313 | name = args[0]; |
b7826503 | 1314 | CHECK_STRING (name); |
d0d6b7c5 JB |
1315 | |
1316 | program = args[2]; | |
1317 | ||
850d0752 NR |
1318 | if (!NILP (program)) |
1319 | CHECK_STRING (program); | |
d0d6b7c5 | 1320 | |
d0d6b7c5 | 1321 | proc = make_process (name); |
b0310da4 JB |
1322 | /* If an error occurs and we can't start the process, we want to |
1323 | remove it from the process list. This means that each error | |
1324 | check in create_process doesn't need to call remove_process | |
1325 | itself; it's all taken care of here. */ | |
1326 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1327 | |
1328 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1329 | XPROCESS (proc)->plist = Qnil; |
d888760c | 1330 | XPROCESS (proc)->type = Qreal; |
d0d6b7c5 JB |
1331 | XPROCESS (proc)->buffer = buffer; |
1332 | XPROCESS (proc)->sentinel = Qnil; | |
1333 | XPROCESS (proc)->filter = Qnil; | |
1334 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); | |
1335 | ||
8af55556 TZ |
1336 | #ifdef HAVE_GNUTLS |
1337 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1338 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
1339 | XPROCESS (proc)->gnutls_cred_type = Qnil; | |
1340 | #endif | |
1341 | ||
6b61353c | 1342 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1343 | XPROCESS (proc)->adaptive_read_buffering |
1344 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1345 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1346 | #endif |
1347 | ||
7af71e17 | 1348 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1349 | if (BUFFERP (buffer)) |
d8a2934e RS |
1350 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1351 | BUF_ZV (XBUFFER (buffer)), | |
1352 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1353 | |
67918941 | 1354 | { |
d5d4ae71 KH |
1355 | /* Decide coding systems for communicating with the process. Here |
1356 | we don't setup the structure coding_system nor pay attention to | |
1357 | unibyte mode. They are done in create_process. */ | |
1358 | ||
67918941 RS |
1359 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1360 | Lisp_Object coding_systems = Qt; | |
1361 | Lisp_Object val, *args2; | |
a4a37e65 | 1362 | struct gcpro gcpro1, gcpro2; |
67918941 | 1363 | |
d5d4ae71 KH |
1364 | val = Vcoding_system_for_read; |
1365 | if (NILP (val)) | |
67918941 | 1366 | { |
38182d90 | 1367 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1368 | args2[0] = Qstart_process; |
1369 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1370 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1371 | if (!NILP (program)) |
1372 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1373 | UNGCPRO; |
1374 | if (CONSP (coding_systems)) | |
70949dac | 1375 | val = XCAR (coding_systems); |
67918941 | 1376 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1377 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1378 | } |
1379 | XPROCESS (proc)->decode_coding_system = val; | |
1380 | ||
d5d4ae71 KH |
1381 | val = Vcoding_system_for_write; |
1382 | if (NILP (val)) | |
67918941 RS |
1383 | { |
1384 | if (EQ (coding_systems, Qt)) | |
1385 | { | |
38182d90 | 1386 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1387 | args2[0] = Qstart_process; |
1388 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1389 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1390 | if (!NILP (program)) |
1391 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1392 | UNGCPRO; |
1393 | } | |
1394 | if (CONSP (coding_systems)) | |
70949dac | 1395 | val = XCDR (coding_systems); |
67918941 | 1396 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1397 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1398 | } |
1399 | XPROCESS (proc)->encode_coding_system = val; | |
e1dbe924 | 1400 | /* Note: At this moment, the above coding system may leave |
fcaf8878 KH |
1401 | text-conversion or eol-conversion unspecified. They will be |
1402 | decided after we read output from the process and decode it by | |
1403 | some coding system, or just before we actually send a text to | |
1404 | the process. */ | |
67918941 | 1405 | } |
0fa1789e | 1406 | |
a4a37e65 | 1407 | |
cbe81f1d | 1408 | XPROCESS (proc)->decoding_buf = empty_unibyte_string; |
850d0752 | 1409 | XPROCESS (proc)->decoding_carryover = 0; |
cbe81f1d | 1410 | XPROCESS (proc)->encoding_buf = empty_unibyte_string; |
ed30cf85 | 1411 | |
850d0752 NR |
1412 | XPROCESS (proc)->inherit_coding_system_flag |
1413 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1414 | |
850d0752 NR |
1415 | if (!NILP (program)) |
1416 | { | |
1417 | /* If program file name is not absolute, search our path for it. | |
1418 | Put the name we will really use in TEM. */ | |
1419 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1420 | && !(SCHARS (program) > 1 | |
1421 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1422 | { | |
1423 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1424 | ||
1425 | tem = Qnil; | |
1426 | GCPRO4 (name, program, buffer, current_dir); | |
1427 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1428 | UNGCPRO; | |
1429 | if (NILP (tem)) | |
1430 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1431 | tem = Fexpand_file_name (tem, Qnil); | |
1432 | } | |
1433 | else | |
1434 | { | |
1435 | if (!NILP (Ffile_directory_p (program))) | |
1436 | error ("Specified program for new process is a directory"); | |
1437 | tem = program; | |
1438 | } | |
ed30cf85 | 1439 | |
850d0752 NR |
1440 | /* If program file name starts with /: for quoting a magic name, |
1441 | discard that. */ | |
1442 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1443 | && SREF (tem, 1) == ':') | |
1444 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1445 | |
77bf07e1 | 1446 | { |
fcaf8878 | 1447 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1448 | struct gcpro gcpro1; |
1449 | GCPRO1 (tem); | |
a4a37e65 | 1450 | |
850d0752 NR |
1451 | /* Encode the file name and put it in NEW_ARGV. |
1452 | That's where the child will use it to execute the program. */ | |
1453 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1454 | |
850d0752 NR |
1455 | /* Here we encode arguments by the coding system used for sending |
1456 | data to the process. We don't support using different coding | |
1457 | systems for encoding arguments and for encoding data sent to the | |
1458 | process. */ | |
77bf07e1 | 1459 | |
850d0752 NR |
1460 | for (i = 3; i < nargs; i++) |
1461 | { | |
1462 | tem = Fcons (args[i], tem); | |
1463 | CHECK_STRING (XCAR (tem)); | |
1464 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1465 | { |
1466 | if (NILP (arg_encoding)) | |
1467 | arg_encoding = (complement_process_encoding_system | |
1468 | (XPROCESS (proc)->encode_coding_system)); | |
1469 | XSETCAR (tem, | |
1470 | code_convert_string_norecord | |
1471 | (XCAR (tem), arg_encoding, 1)); | |
1472 | } | |
850d0752 | 1473 | } |
a4a37e65 | 1474 | |
850d0752 NR |
1475 | UNGCPRO; |
1476 | } | |
0fa1789e | 1477 | |
850d0752 NR |
1478 | /* Now that everything is encoded we can collect the strings into |
1479 | NEW_ARGV. */ | |
38182d90 | 1480 | new_argv = alloca ((nargs - 1) * sizeof *new_argv); |
850d0752 | 1481 | new_argv[nargs - 2] = 0; |
52a1b894 | 1482 | |
c5101a77 | 1483 | for (i = nargs - 2; i-- != 0; ) |
850d0752 NR |
1484 | { |
1485 | new_argv[i] = SDATA (XCAR (tem)); | |
1486 | tem = XCDR (tem); | |
1487 | } | |
1488 | ||
1489 | create_process (proc, (char **) new_argv, current_dir); | |
1490 | } | |
1491 | else | |
1492 | create_pty (proc); | |
d0d6b7c5 | 1493 | |
b0310da4 | 1494 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1495 | } |
1496 | ||
b0310da4 | 1497 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1498 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1499 | an error and the process wasn't started successfully, so we should |
1500 | remove it from the process list. */ | |
1501 | static Lisp_Object | |
d3da34e0 | 1502 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1503 | { |
bcd69aea | 1504 | if (!PROCESSP (proc)) |
b0310da4 JB |
1505 | abort (); |
1506 | ||
2bf26180 GM |
1507 | /* Was PROC started successfully? |
1508 | -2 is used for a pty with no process, eg for gdb. */ | |
1509 | if (XPROCESS (proc)->pid <= 0 && XPROCESS (proc)->pid != -2) | |
b0310da4 JB |
1510 | remove_process (proc); |
1511 | ||
1512 | return Qnil; | |
1513 | } | |
1514 | ||
ff6daed3 | 1515 | static void |
d3da34e0 | 1516 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1517 | { |
30904ab7 | 1518 | /* Nothing to do. */ |
d0d6b7c5 JB |
1519 | } |
1520 | ||
30904ab7 | 1521 | |
40ccffa6 | 1522 | static void |
d3da34e0 | 1523 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1524 | { |
29ed4d51 CY |
1525 | int inchannel, outchannel; |
1526 | pid_t pid; | |
d0d6b7c5 | 1527 | int sv[2]; |
2c4df143 YM |
1528 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1529 | int wait_child_setup[2]; | |
1530 | #endif | |
0dc70c33 KH |
1531 | sigset_t procmask; |
1532 | sigset_t blocked; | |
1533 | struct sigaction sigint_action; | |
1534 | struct sigaction sigquit_action; | |
c0ad4ea5 | 1535 | struct sigaction sigpipe_action; |
0dc70c33 KH |
1536 | #ifdef AIX |
1537 | struct sigaction sighup_action; | |
1538 | #endif | |
ecd1f654 KH |
1539 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1540 | volatile int forkin, forkout; | |
1541 | volatile int pty_flag = 0; | |
3ec68006 | 1542 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1543 | extern char **environ; |
3ec68006 | 1544 | #endif |
d0d6b7c5 | 1545 | |
d0d6b7c5 JB |
1546 | inchannel = outchannel = -1; |
1547 | ||
1548 | #ifdef HAVE_PTYS | |
fe45da4e | 1549 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1550 | outchannel = inchannel = allocate_pty (); |
1551 | ||
d0d6b7c5 JB |
1552 | if (inchannel >= 0) |
1553 | { | |
2af70a0c RS |
1554 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1555 | /* On most USG systems it does not work to open the pty's tty here, | |
1556 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1557 | #ifdef O_NOCTTY |
1558 | /* Don't let this terminal become our controlling terminal | |
1559 | (in case we don't have one). */ | |
68c45bf0 | 1560 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1561 | #else |
68c45bf0 | 1562 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1563 | #endif |
1564 | if (forkin < 0) | |
1565 | report_file_error ("Opening pty", Qnil); | |
1566 | #else | |
1567 | forkin = forkout = -1; | |
2af70a0c | 1568 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1569 | pty_flag = 1; |
1570 | } | |
1571 | else | |
1572 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1573 | { |
fc14013c KH |
1574 | int tem; |
1575 | tem = pipe (sv); | |
1576 | if (tem < 0) | |
1577 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1578 | inchannel = sv[0]; |
1579 | forkout = sv[1]; | |
fc14013c KH |
1580 | tem = pipe (sv); |
1581 | if (tem < 0) | |
1582 | { | |
68c45bf0 PE |
1583 | emacs_close (inchannel); |
1584 | emacs_close (forkout); | |
fc14013c KH |
1585 | report_file_error ("Creating pipe", Qnil); |
1586 | } | |
d0d6b7c5 JB |
1587 | outchannel = sv[1]; |
1588 | forkin = sv[0]; | |
1589 | } | |
d0d6b7c5 | 1590 | |
2c4df143 YM |
1591 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1592 | { | |
1593 | int tem; | |
1594 | ||
1595 | tem = pipe (wait_child_setup); | |
1596 | if (tem < 0) | |
1597 | report_file_error ("Creating pipe", Qnil); | |
1598 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1599 | if (tem >= 0) | |
1600 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1601 | if (tem < 0) | |
1602 | { | |
1603 | emacs_close (wait_child_setup[0]); | |
1604 | emacs_close (wait_child_setup[1]); | |
1605 | report_file_error ("Setting file descriptor flags", Qnil); | |
1606 | } | |
1607 | } | |
1608 | #endif | |
1609 | ||
d0d6b7c5 JB |
1610 | #ifdef O_NONBLOCK |
1611 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1612 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1613 | #else |
1614 | #ifdef O_NDELAY | |
1615 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1616 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1617 | #endif |
1618 | #endif | |
1619 | ||
1620 | /* Record this as an active process, with its channels. | |
1621 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1622 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1623 | XPROCESS (process)->infd = inchannel; |
1624 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1625 | |
1626 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1627 | It was only used for getting the foreground tty process, so now | |
1628 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1629 | more portable (see USG_SUBTTY_WORKS above). */ | |
1630 | ||
60f0fb11 | 1631 | XPROCESS (process)->pty_flag = pty_flag; |
d0d6b7c5 JB |
1632 | XPROCESS (process)->status = Qrun; |
1633 | ||
1634 | /* Delay interrupts until we have a chance to store | |
1635 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1636 | sigemptyset (&blocked); |
1637 | #ifdef SIGCHLD | |
1638 | sigaddset (&blocked, SIGCHLD); | |
1639 | #endif | |
351e611f | 1640 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1641 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1642 | this sets the parent's signal handlers as well as the child's. | |
1643 | So delay all interrupts whose handlers the child might munge, | |
1644 | and record the current handlers so they can be restored later. */ | |
1645 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1646 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
c0ad4ea5 | 1647 | sigaddset (&blocked, SIGPIPE); sigaction (SIGPIPE, 0, &sigpipe_action); |
0dc70c33 KH |
1648 | #ifdef AIX |
1649 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1650 | #endif | |
351e611f | 1651 | #endif /* HAVE_WORKING_VFORK */ |
123403e4 | 1652 | pthread_sigmask (SIG_BLOCK, &blocked, &procmask); |
d0d6b7c5 | 1653 | |
3081bf8d | 1654 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1655 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1656 | if (inchannel > max_process_desc) |
1657 | max_process_desc = inchannel; | |
1658 | ||
d0d6b7c5 JB |
1659 | /* Until we store the proper pid, enable sigchld_handler |
1660 | to recognize an unknown pid as standing for this process. | |
1661 | It is very important not to let this `marker' value stay | |
1662 | in the table after this function has returned; if it does | |
1663 | it might cause call-process to hang and subsequent asynchronous | |
1664 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1665 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1666 | |
5cf2b69b KH |
1667 | /* This must be called after the above line because it may signal an |
1668 | error. */ | |
1669 | setup_process_coding_systems (process); | |
1670 | ||
ececcbec | 1671 | BLOCK_INPUT; |
177c0ea7 | 1672 | |
d0d6b7c5 JB |
1673 | { |
1674 | /* child_setup must clobber environ on systems with true vfork. | |
1675 | Protect it from permanent change. */ | |
1676 | char **save_environ = environ; | |
12d8b6ab | 1677 | volatile Lisp_Object encoded_current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1678 | |
e98d950b | 1679 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1680 | pid = vfork (); |
1681 | if (pid == 0) | |
e98d950b | 1682 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1683 | { |
1684 | int xforkin = forkin; | |
1685 | int xforkout = forkout; | |
1686 | ||
1687 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1688 | but fails to handle all the cases. */ | |
1689 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1690 | sigsetmask (SIGEMPTYMASK); | |
1691 | #endif | |
1692 | ||
1693 | /* Make the pty be the controlling terminal of the process. */ | |
1694 | #ifdef HAVE_PTYS | |
1695 | /* First, disconnect its current controlling terminal. */ | |
1696 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1697 | /* We tried doing setsid only if pty_flag, but it caused |
1698 | process_set_signal to fail on SGI when using a pipe. */ | |
1699 | setsid (); | |
ce4c9c90 | 1700 | /* Make the pty's terminal the controlling terminal. */ |
ce8f5a9a | 1701 | if (pty_flag && xforkin >= 0) |
39e9ebcd | 1702 | { |
39e9ebcd RS |
1703 | #ifdef TIOCSCTTY |
1704 | /* We ignore the return value | |
1705 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1706 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1707 | #endif |
39e9ebcd | 1708 | } |
d0d6b7c5 | 1709 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1710 | #ifdef USG |
000ab717 | 1711 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1712 | afterwards. Otherwise, we lose our controlling tty which |
1713 | is set when we open the pty. */ | |
1714 | setpgrp (); | |
1715 | #endif /* USG */ | |
1716 | #endif /* not HAVE_SETSID */ | |
a7ebc409 | 1717 | #if defined (LDISC1) |
9bcf8ec6 KH |
1718 | if (pty_flag && xforkin >= 0) |
1719 | { | |
1720 | struct termios t; | |
1721 | tcgetattr (xforkin, &t); | |
1722 | t.c_lflag = LDISC1; | |
1723 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1724 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1725 | } |
1726 | #else | |
aafadd9f | 1727 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1728 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1729 | { |
1730 | /* Use new line discipline. */ | |
1731 | int ldisc = NTTYDISC; | |
4458f555 | 1732 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1733 | } |
000ab717 | 1734 | #endif |
9bcf8ec6 | 1735 | #endif |
177c0ea7 | 1736 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1737 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1738 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1739 | if (pty_flag) | |
1740 | { | |
177c0ea7 | 1741 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1742 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1743 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
ce8f5a9a AS |
1744 | if (j >= 0) |
1745 | { | |
1746 | ioctl (j, TIOCNOTTY, 0); | |
1747 | emacs_close (j); | |
1748 | } | |
5a570e37 | 1749 | #ifndef USG |
d0d6b7c5 JB |
1750 | /* In order to get a controlling terminal on some versions |
1751 | of BSD, it is necessary to put the process in pgrp 0 | |
1752 | before it opens the terminal. */ | |
99c1aeca | 1753 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1754 | setpgid (0, 0); |
1755 | #else | |
d0d6b7c5 | 1756 | setpgrp (0, 0); |
3ea1d291 | 1757 | #endif |
d0d6b7c5 JB |
1758 | #endif |
1759 | } | |
1760 | #endif /* TIOCNOTTY */ | |
1761 | ||
e39a993c | 1762 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1763 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1764 | conditional on TIOCSPGRP, |
1765 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1766 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1767 | that system does seem to need this code, even though | |
1768 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1769 | /* Now close the pty (if we had it open) and reopen it. |
1770 | This makes the pty the controlling terminal of the subprocess. */ | |
1771 | if (pty_flag) | |
1772 | { | |
99e3d726 | 1773 | |
68c45bf0 PE |
1774 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1775 | would work? */ | |
d0d6b7c5 | 1776 | if (xforkin >= 0) |
68c45bf0 PE |
1777 | emacs_close (xforkin); |
1778 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1779 | |
4aa54ba8 RS |
1780 | if (xforkin < 0) |
1781 | { | |
68c45bf0 PE |
1782 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
1783 | emacs_write (1, pty_name, strlen (pty_name)); | |
1784 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
1785 | _exit (1); |
1786 | } | |
1787 | ||
d0d6b7c5 | 1788 | } |
e39a993c | 1789 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1790 | |
d0d6b7c5 | 1791 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
1792 | if (pty_flag) |
1793 | { | |
1794 | SETUP_SLAVE_PTY; | |
1795 | } | |
d0d6b7c5 JB |
1796 | #endif /* SETUP_SLAVE_PTY */ |
1797 | #ifdef AIX | |
1798 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
1799 | Now reenable it in the child, so it will die when we want it to. */ | |
1800 | if (pty_flag) | |
1801 | signal (SIGHUP, SIG_DFL); | |
1802 | #endif | |
1803 | #endif /* HAVE_PTYS */ | |
1804 | ||
0dc70c33 KH |
1805 | signal (SIGINT, SIG_DFL); |
1806 | signal (SIGQUIT, SIG_DFL); | |
2f9a22e2 | 1807 | /* GConf causes us to ignore SIGPIPE, make sure it is restored |
c0ad4ea5 AS |
1808 | in the child. */ |
1809 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 KH |
1810 | |
1811 | /* Stop blocking signals in the child. */ | |
123403e4 | 1812 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
5e7e1da2 | 1813 | |
ab01d0a8 RS |
1814 | if (pty_flag) |
1815 | child_setup_tty (xforkout); | |
e98d950b RS |
1816 | #ifdef WINDOWSNT |
1817 | pid = child_setup (xforkin, xforkout, xforkout, | |
12d8b6ab | 1818 | new_argv, 1, encoded_current_dir); |
177c0ea7 | 1819 | #else /* not WINDOWSNT */ |
2c4df143 YM |
1820 | #ifdef FD_CLOEXEC |
1821 | emacs_close (wait_child_setup[0]); | |
1822 | #endif | |
d0d6b7c5 | 1823 | child_setup (xforkin, xforkout, xforkout, |
12d8b6ab | 1824 | new_argv, 1, encoded_current_dir); |
e98d950b | 1825 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1826 | } |
1827 | environ = save_environ; | |
1828 | } | |
1829 | ||
ececcbec RS |
1830 | UNBLOCK_INPUT; |
1831 | ||
4a127b3b | 1832 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 1833 | if (pid < 0) |
6311cf58 RS |
1834 | { |
1835 | if (forkin >= 0) | |
68c45bf0 | 1836 | emacs_close (forkin); |
6311cf58 | 1837 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1838 | emacs_close (forkout); |
6311cf58 | 1839 | } |
4a127b3b KH |
1840 | else |
1841 | { | |
1842 | /* vfork succeeded. */ | |
6bfd98e7 | 1843 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 1844 | |
e98d950b | 1845 | #ifdef WINDOWSNT |
4a127b3b | 1846 | register_child (pid, inchannel); |
e98d950b RS |
1847 | #endif /* WINDOWSNT */ |
1848 | ||
4a127b3b KH |
1849 | /* If the subfork execv fails, and it exits, |
1850 | this close hangs. I don't know why. | |
1851 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
1852 | { |
1853 | struct atimer *timer; | |
1854 | EMACS_TIME offset; | |
177c0ea7 | 1855 | |
30904ab7 GM |
1856 | stop_polling (); |
1857 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
1858 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 1859 | |
30904ab7 GM |
1860 | if (forkin >= 0) |
1861 | emacs_close (forkin); | |
1862 | ||
1863 | cancel_atimer (timer); | |
1864 | start_polling (); | |
1865 | } | |
177c0ea7 | 1866 | |
4a127b3b | 1867 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1868 | emacs_close (forkout); |
d0d6b7c5 | 1869 | |
875e6b94 | 1870 | #ifdef HAVE_PTYS |
4a127b3b KH |
1871 | if (pty_flag) |
1872 | XPROCESS (process)->tty_name = build_string (pty_name); | |
1873 | else | |
875e6b94 | 1874 | #endif |
4a127b3b | 1875 | XPROCESS (process)->tty_name = Qnil; |
2c4df143 YM |
1876 | |
1877 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
1878 | /* Wait for child_setup to complete in case that vfork is | |
1879 | actually defined as fork. The descriptor wait_child_setup[1] | |
1880 | of a pipe is closed at the child side either by close-on-exec | |
1881 | on successful execvp or the _exit call in child_setup. */ | |
1882 | { | |
1883 | char dummy; | |
1884 | ||
1885 | emacs_close (wait_child_setup[1]); | |
1886 | emacs_read (wait_child_setup[0], &dummy, 1); | |
1887 | emacs_close (wait_child_setup[0]); | |
1888 | } | |
1889 | #endif | |
4a127b3b | 1890 | } |
3b9a3dfa | 1891 | |
4a127b3b KH |
1892 | /* Restore the signal state whether vfork succeeded or not. |
1893 | (We will signal an error, below, if it failed.) */ | |
351e611f | 1894 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1895 | /* Restore the parent's signal handlers. */ |
1896 | sigaction (SIGINT, &sigint_action, 0); | |
1897 | sigaction (SIGQUIT, &sigquit_action, 0); | |
c0ad4ea5 | 1898 | sigaction (SIGPIPE, &sigpipe_action, 0); |
0dc70c33 KH |
1899 | #ifdef AIX |
1900 | sigaction (SIGHUP, &sighup_action, 0); | |
1901 | #endif | |
351e611f | 1902 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 | 1903 | /* Stop blocking signals in the parent. */ |
123403e4 | 1904 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
4a127b3b KH |
1905 | |
1906 | /* Now generate the error if vfork failed. */ | |
1907 | if (pid < 0) | |
1908 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 1909 | } |
d0d6b7c5 | 1910 | |
850d0752 | 1911 | void |
d3da34e0 | 1912 | create_pty (Lisp_Object process) |
850d0752 NR |
1913 | { |
1914 | int inchannel, outchannel; | |
afd4052b | 1915 | int pty_flag = 0; |
850d0752 NR |
1916 | |
1917 | inchannel = outchannel = -1; | |
1918 | ||
1919 | #ifdef HAVE_PTYS | |
1920 | if (!NILP (Vprocess_connection_type)) | |
1921 | outchannel = inchannel = allocate_pty (); | |
1922 | ||
1923 | if (inchannel >= 0) | |
1924 | { | |
1925 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
1926 | /* On most USG systems it does not work to open the pty's tty here, | |
1927 | then close it and reopen it in the child. */ | |
1928 | #ifdef O_NOCTTY | |
1929 | /* Don't let this terminal become our controlling terminal | |
1930 | (in case we don't have one). */ | |
afd4052b | 1931 | int forkout = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
850d0752 | 1932 | #else |
afd4052b | 1933 | int forkout = emacs_open (pty_name, O_RDWR, 0); |
850d0752 | 1934 | #endif |
aba7731a | 1935 | if (forkout < 0) |
850d0752 | 1936 | report_file_error ("Opening pty", Qnil); |
019d2c4c | 1937 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
1938 | /* In the case that vfork is defined as fork, the parent process |
1939 | (Emacs) may send some data before the child process completes | |
1940 | tty options setup. So we setup tty before forking. */ | |
1941 | child_setup_tty (forkout); | |
019d2c4c | 1942 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
1943 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
1944 | pty_flag = 1; | |
1945 | } | |
1946 | #endif /* HAVE_PTYS */ | |
1947 | ||
1948 | #ifdef O_NONBLOCK | |
1949 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
1950 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
1951 | #else | |
1952 | #ifdef O_NDELAY | |
1953 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
1954 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
1955 | #endif | |
1956 | #endif | |
1957 | ||
1958 | /* Record this as an active process, with its channels. | |
1959 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1960 | chan_process[inchannel] = process; | |
1961 | XPROCESS (process)->infd = inchannel; | |
1962 | XPROCESS (process)->outfd = outchannel; | |
1963 | ||
1964 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1965 | It was only used for getting the foreground tty process, so now | |
1966 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1967 | more portable (see USG_SUBTTY_WORKS above). */ | |
1968 | ||
1969 | XPROCESS (process)->pty_flag = pty_flag; | |
1970 | XPROCESS (process)->status = Qrun; | |
1971 | setup_process_coding_systems (process); | |
1972 | ||
1973 | FD_SET (inchannel, &input_wait_mask); | |
1974 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
1975 | if (inchannel > max_process_desc) | |
1976 | max_process_desc = inchannel; | |
1977 | ||
1978 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
1979 | #ifdef HAVE_PTYS |
1980 | if (pty_flag) | |
1981 | XPROCESS (process)->tty_name = build_string (pty_name); | |
1982 | else | |
1983 | #endif | |
1984 | XPROCESS (process)->tty_name = Qnil; | |
850d0752 NR |
1985 | } |
1986 | ||
e690ca94 | 1987 | \f |
e690ca94 KS |
1988 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
1989 | The address family of sa is not included in the result. */ | |
1990 | ||
1991 | static Lisp_Object | |
d3da34e0 | 1992 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
1993 | { |
1994 | Lisp_Object address; | |
1995 | int i; | |
1996 | unsigned char *cp; | |
1997 | register struct Lisp_Vector *p; | |
1998 | ||
63136da6 AS |
1999 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2000 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2001 | a zero length name. */ | |
89887d67 | 2002 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2003 | return empty_unibyte_string; |
63136da6 | 2004 | |
e690ca94 KS |
2005 | switch (sa->sa_family) |
2006 | { | |
2007 | case AF_INET: | |
2008 | { | |
2009 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2010 | len = sizeof (sin->sin_addr) + 1; | |
2011 | address = Fmake_vector (make_number (len), Qnil); | |
2012 | p = XVECTOR (address); | |
2013 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2014 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2015 | break; |
2016 | } | |
e1652a86 KS |
2017 | #ifdef AF_INET6 |
2018 | case AF_INET6: | |
2019 | { | |
2020 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2021 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2022 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2023 | address = Fmake_vector (make_number (len), Qnil); | |
2024 | p = XVECTOR (address); | |
2025 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2026 | for (i = 0; i < len; i++) | |
2027 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2028 | return address; | |
2029 | } | |
2030 | #endif | |
e690ca94 KS |
2031 | #ifdef HAVE_LOCAL_SOCKETS |
2032 | case AF_LOCAL: | |
2033 | { | |
fb23673a EZ |
2034 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2035 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2036 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2037 | break; |
fb23673a | 2038 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2039 | } |
2040 | #endif | |
2041 | default: | |
89887d67 | 2042 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2043 | address = Fcons (make_number (sa->sa_family), |
2044 | Fmake_vector (make_number (len), Qnil)); | |
2045 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2046 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2047 | break; |
2048 | } | |
2049 | ||
2050 | i = 0; | |
2051 | while (i < len) | |
2052 | p->contents[i++] = make_number (*cp++); | |
2053 | ||
2054 | return address; | |
2055 | } | |
2056 | ||
2057 | ||
2058 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2059 | ||
2060 | static int | |
d3da34e0 | 2061 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2062 | { |
2063 | register struct Lisp_Vector *p; | |
2064 | ||
2065 | if (VECTORP (address)) | |
2066 | { | |
2067 | p = XVECTOR (address); | |
eab3844f | 2068 | if (p->header.size == 5) |
e690ca94 KS |
2069 | { |
2070 | *familyp = AF_INET; | |
2071 | return sizeof (struct sockaddr_in); | |
2072 | } | |
e1652a86 | 2073 | #ifdef AF_INET6 |
eab3844f | 2074 | else if (p->header.size == 9) |
e1652a86 KS |
2075 | { |
2076 | *familyp = AF_INET6; | |
2077 | return sizeof (struct sockaddr_in6); | |
2078 | } | |
2079 | #endif | |
e690ca94 KS |
2080 | } |
2081 | #ifdef HAVE_LOCAL_SOCKETS | |
2082 | else if (STRINGP (address)) | |
2083 | { | |
2084 | *familyp = AF_LOCAL; | |
2085 | return sizeof (struct sockaddr_un); | |
2086 | } | |
2087 | #endif | |
d311d28c PE |
2088 | else if (CONSP (address) && TYPE_RANGED_INTEGERP (int, XCAR (address)) |
2089 | && VECTORP (XCDR (address))) | |
e690ca94 KS |
2090 | { |
2091 | struct sockaddr *sa; | |
2092 | *familyp = XINT (XCAR (address)); | |
2093 | p = XVECTOR (XCDR (address)); | |
eab3844f | 2094 | return p->header.size + sizeof (sa->sa_family); |
e690ca94 KS |
2095 | } |
2096 | return 0; | |
2097 | } | |
2098 | ||
2099 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2100 | |
2101 | The address format has been basically validated by | |
2102 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2103 | it could have come from user data. So if FAMILY is not valid, | |
2104 | we return after zeroing *SA. */ | |
e690ca94 KS |
2105 | |
2106 | static void | |
d3da34e0 | 2107 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2108 | { |
2109 | register struct Lisp_Vector *p; | |
34967d0f | 2110 | register unsigned char *cp = NULL; |
e690ca94 | 2111 | register int i; |
d311d28c | 2112 | EMACS_INT hostport; |
e690ca94 | 2113 | |
72af86bd | 2114 | memset (sa, 0, len); |
e690ca94 KS |
2115 | |
2116 | if (VECTORP (address)) | |
2117 | { | |
2118 | p = XVECTOR (address); | |
2119 | if (family == AF_INET) | |
2120 | { | |
2121 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2122 | len = sizeof (sin->sin_addr) + 1; | |
d311d28c PE |
2123 | hostport = XINT (p->contents[--len]); |
2124 | sin->sin_port = htons (hostport); | |
e690ca94 | 2125 | cp = (unsigned char *)&sin->sin_addr; |
9d1a8e5d | 2126 | sa->sa_family = family; |
e690ca94 | 2127 | } |
e1652a86 KS |
2128 | #ifdef AF_INET6 |
2129 | else if (family == AF_INET6) | |
2130 | { | |
2131 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2132 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2133 | len = sizeof (sin6->sin6_addr) + 1; | |
d311d28c PE |
2134 | hostport = XINT (p->contents[--len]); |
2135 | sin6->sin6_port = htons (hostport); | |
e1652a86 KS |
2136 | for (i = 0; i < len; i++) |
2137 | if (INTEGERP (p->contents[i])) | |
2138 | { | |
2139 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2140 | ip6[i] = ntohs (j); | |
2141 | } | |
9d1a8e5d | 2142 | sa->sa_family = family; |
0eb7675e | 2143 | return; |
e1652a86 KS |
2144 | } |
2145 | #endif | |
0eb7675e AS |
2146 | else |
2147 | return; | |
e690ca94 KS |
2148 | } |
2149 | else if (STRINGP (address)) | |
2150 | { | |
2151 | #ifdef HAVE_LOCAL_SOCKETS | |
2152 | if (family == AF_LOCAL) | |
2153 | { | |
fb23673a | 2154 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2155 | cp = SDATA (address); |
fb23673a EZ |
2156 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2157 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2158 | sa->sa_family = family; |
e690ca94 KS |
2159 | } |
2160 | #endif | |
2161 | return; | |
2162 | } | |
2163 | else | |
2164 | { | |
2165 | p = XVECTOR (XCDR (address)); | |
2166 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2167 | } | |
2168 | ||
2169 | for (i = 0; i < len; i++) | |
2170 | if (INTEGERP (p->contents[i])) | |
2171 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2172 | } | |
2173 | ||
2174 | #ifdef DATAGRAM_SOCKETS | |
2175 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2176 | 1, 1, 0, | |
2177 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2178 | (Lisp_Object process) |
e690ca94 KS |
2179 | { |
2180 | int channel; | |
2181 | ||
2182 | CHECK_PROCESS (process); | |
2183 | ||
2184 | if (!DATAGRAM_CONN_P (process)) | |
2185 | return Qnil; | |
2186 | ||
60f0fb11 | 2187 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2188 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2189 | datagram_address[channel].len); | |
2190 | } | |
2191 | ||
2192 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2193 | 2, 2, 0, | |
2194 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2195 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2196 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2197 | { |
2198 | int channel; | |
2199 | int family, len; | |
2200 | ||
2201 | CHECK_PROCESS (process); | |
2202 | ||
2203 | if (!DATAGRAM_CONN_P (process)) | |
2204 | return Qnil; | |
2205 | ||
60f0fb11 | 2206 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2207 | |
2208 | len = get_lisp_to_sockaddr_size (address, &family); | |
2209 | if (datagram_address[channel].len != len) | |
2210 | return Qnil; | |
2211 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2212 | return address; | |
2213 | } | |
2214 | #endif | |
2215 | \f | |
2216 | ||
5e2327cf | 2217 | static const struct socket_options { |
e690ca94 | 2218 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2219 | name without SO_ prefix. */ |
fce70521 | 2220 | const char *name; |
e690ca94 KS |
2221 | /* Option level SOL_... */ |
2222 | int optlevel; | |
2223 | /* Option number SO_... */ | |
2224 | int optnum; | |
6b61353c KH |
2225 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2226 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2227 | } socket_options[] = |
2228 | { | |
2229 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2230 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2231 | #endif |
2232 | #ifdef SO_BROADCAST | |
6b61353c | 2233 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2234 | #endif |
2235 | #ifdef SO_DONTROUTE | |
6b61353c | 2236 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2237 | #endif |
2238 | #ifdef SO_KEEPALIVE | |
6b61353c | 2239 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2240 | #endif |
2241 | #ifdef SO_LINGER | |
6b61353c | 2242 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2243 | #endif |
2244 | #ifdef SO_OOBINLINE | |
6b61353c | 2245 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2246 | #endif |
2247 | #ifdef SO_PRIORITY | |
6b61353c | 2248 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2249 | #endif |
2250 | #ifdef SO_REUSEADDR | |
6b61353c | 2251 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2252 | #endif |
6b61353c | 2253 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2254 | }; |
2255 | ||
6b61353c | 2256 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2257 | |
6b61353c KH |
2258 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2259 | Signals an error if setting a known option fails. | |
2260 | */ | |
e690ca94 KS |
2261 | |
2262 | static int | |
d3da34e0 | 2263 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2264 | { |
6b61353c | 2265 | char *name; |
5e2327cf | 2266 | const struct socket_options *sopt; |
6b61353c | 2267 | int ret = 0; |
e690ca94 | 2268 | |
6b61353c | 2269 | CHECK_SYMBOL (opt); |
e690ca94 | 2270 | |
51b59d79 | 2271 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2272 | for (sopt = socket_options; sopt->name; sopt++) |
2273 | if (strcmp (name, sopt->name) == 0) | |
2274 | break; | |
e690ca94 | 2275 | |
6b61353c KH |
2276 | switch (sopt->opttype) |
2277 | { | |
2278 | case SOPT_BOOL: | |
2279 | { | |
2280 | int optval; | |
2281 | optval = NILP (val) ? 0 : 1; | |
2282 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2283 | &optval, sizeof (optval)); | |
2284 | break; | |
2285 | } | |
e690ca94 | 2286 | |
6b61353c KH |
2287 | case SOPT_INT: |
2288 | { | |
2289 | int optval; | |
d311d28c | 2290 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2291 | optval = XINT (val); |
2292 | else | |
2293 | error ("Bad option value for %s", name); | |
2294 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2295 | &optval, sizeof (optval)); | |
2296 | break; | |
2297 | } | |
e690ca94 | 2298 | |
6b61353c KH |
2299 | #ifdef SO_BINDTODEVICE |
2300 | case SOPT_IFNAME: | |
2301 | { | |
2302 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2303 | |
6b61353c KH |
2304 | /* This is broken, at least in the Linux 2.4 kernel. |
2305 | To unbind, the arg must be a zero integer, not the empty string. | |
2306 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2307 | memset (devname, 0, sizeof devname); |
6b61353c | 2308 | if (STRINGP (val)) |
e690ca94 | 2309 | { |
51b59d79 | 2310 | char *arg = SSDATA (val); |
6b61353c | 2311 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2312 | memcpy (devname, arg, len); |
e690ca94 | 2313 | } |
6b61353c KH |
2314 | else if (!NILP (val)) |
2315 | error ("Bad option value for %s", name); | |
2316 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2317 | devname, IFNAMSIZ); | |
2318 | break; | |
2319 | } | |
2320 | #endif | |
e690ca94 | 2321 | |
177c0ea7 | 2322 | #ifdef SO_LINGER |
6b61353c KH |
2323 | case SOPT_LINGER: |
2324 | { | |
2325 | struct linger linger; | |
e690ca94 | 2326 | |
6b61353c KH |
2327 | linger.l_onoff = 1; |
2328 | linger.l_linger = 0; | |
d311d28c | 2329 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2330 | linger.l_linger = XINT (val); |
2331 | else | |
2332 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2333 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2334 | &linger, sizeof (linger)); | |
2335 | break; | |
2336 | } | |
e690ca94 | 2337 | #endif |
6b61353c KH |
2338 | |
2339 | default: | |
2340 | return 0; | |
e690ca94 | 2341 | } |
6b61353c KH |
2342 | |
2343 | if (ret < 0) | |
2344 | report_file_error ("Cannot set network option", | |
2345 | Fcons (opt, Fcons (val, Qnil))); | |
2346 | return (1 << sopt->optbit); | |
e690ca94 KS |
2347 | } |
2348 | ||
6b61353c KH |
2349 | |
2350 | DEFUN ("set-network-process-option", | |
2351 | Fset_network_process_option, Sset_network_process_option, | |
2352 | 3, 4, 0, | |
2353 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2354 | See `make-network-process' for a list of options and values. | |
2355 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2356 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2357 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2358 | { |
6b61353c KH |
2359 | int s; |
2360 | struct Lisp_Process *p; | |
e690ca94 | 2361 | |
e690ca94 | 2362 | CHECK_PROCESS (process); |
6b61353c KH |
2363 | p = XPROCESS (process); |
2364 | if (!NETCONN1_P (p)) | |
2365 | error ("Process is not a network process"); | |
2366 | ||
60f0fb11 | 2367 | s = p->infd; |
6b61353c KH |
2368 | if (s < 0) |
2369 | error ("Process is not running"); | |
2370 | ||
2371 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2372 | { |
6b61353c KH |
2373 | p->childp = Fplist_put (p->childp, option, value); |
2374 | return Qt; | |
e690ca94 | 2375 | } |
6b61353c KH |
2376 | |
2377 | if (NILP (no_error)) | |
2378 | error ("Unknown or unsupported option"); | |
2379 | ||
2380 | return Qnil; | |
e690ca94 | 2381 | } |
6b61353c | 2382 | |
e690ca94 | 2383 | \f |
d888760c GM |
2384 | DEFUN ("serial-process-configure", |
2385 | Fserial_process_configure, | |
2386 | Sserial_process_configure, | |
2387 | 0, MANY, 0, | |
2388 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2389 | ||
2390 | Arguments are specified as keyword/argument pairs. Attributes that | |
2391 | are not given are re-initialized from the process's current | |
2392 | configuration (available via the function `process-contact') or set to | |
2393 | reasonable default values. The following arguments are defined: | |
2394 | ||
2395 | :process PROCESS | |
2396 | :name NAME | |
2397 | :buffer BUFFER | |
2398 | :port PORT | |
2399 | -- Any of these arguments can be given to identify the process that is | |
2400 | to be configured. If none of these arguments is given, the current | |
2401 | buffer's process is used. | |
2402 | ||
2403 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2404 | second, also called baud rate. Any value can be given for SPEED, but | |
2405 | most serial ports work only at a few defined values between 1200 and | |
2406 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2407 | serial port is not configured any further, i.e., all other arguments | |
2408 | are ignored. This may be useful for special serial ports such as | |
2409 | Bluetooth-to-serial converters which can only be configured through AT | |
2410 | commands. A value of nil for SPEED can be used only when passed | |
2411 | through `make-serial-process' or `serial-term'. | |
2412 | ||
2413 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2414 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2415 | ||
2416 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2417 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2418 | PARITY is not given, no parity is used. | |
2419 | ||
2420 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2421 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2422 | is not given or nil, 1 stopbit is used. | |
2423 | ||
2424 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2425 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2426 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2427 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2428 | flowcontrol is used. | |
2429 | ||
2430 | `serial-process-configure' is called by `make-serial-process' for the | |
2431 | initial configuration of the serial port. | |
2432 | ||
2433 | Examples: | |
2434 | ||
2435 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2436 | ||
2437 | \(serial-process-configure | |
2438 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2439 | ||
2440 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2441 | ||
2442 | usage: (serial-process-configure &rest ARGS) */) | |
f66c7cf8 | 2443 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2444 | { |
2445 | struct Lisp_Process *p; | |
2446 | Lisp_Object contact = Qnil; | |
2447 | Lisp_Object proc = Qnil; | |
2448 | struct gcpro gcpro1; | |
2449 | ||
2450 | contact = Flist (nargs, args); | |
2451 | GCPRO1 (contact); | |
2452 | ||
2453 | proc = Fplist_get (contact, QCprocess); | |
2454 | if (NILP (proc)) | |
2455 | proc = Fplist_get (contact, QCname); | |
2456 | if (NILP (proc)) | |
2457 | proc = Fplist_get (contact, QCbuffer); | |
2458 | if (NILP (proc)) | |
2459 | proc = Fplist_get (contact, QCport); | |
2460 | proc = get_process (proc); | |
2461 | p = XPROCESS (proc); | |
a879ee6f | 2462 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2463 | error ("Not a serial process"); |
2464 | ||
2465 | if (NILP (Fplist_get (p->childp, QCspeed))) | |
2466 | { | |
2467 | UNGCPRO; | |
2468 | return Qnil; | |
2469 | } | |
2470 | ||
2471 | serial_configure (p, contact); | |
2472 | ||
2473 | UNGCPRO; | |
2474 | return Qnil; | |
2475 | } | |
d888760c | 2476 | |
d888760c | 2477 | /* Used by make-serial-process to recover from errors. */ |
b766f867 PE |
2478 | static Lisp_Object |
2479 | make_serial_process_unwind (Lisp_Object proc) | |
d888760c GM |
2480 | { |
2481 | if (!PROCESSP (proc)) | |
2482 | abort (); | |
2483 | remove_process (proc); | |
2484 | return Qnil; | |
2485 | } | |
d888760c | 2486 | |
d888760c GM |
2487 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2488 | 0, MANY, 0, | |
2489 | doc: /* Create and return a serial port process. | |
2490 | ||
2491 | In Emacs, serial port connections are represented by process objects, | |
2492 | so input and output work as for subprocesses, and `delete-process' | |
2493 | closes a serial port connection. However, a serial process has no | |
2494 | process id, it cannot be signaled, and the status codes are different | |
2495 | from normal processes. | |
2496 | ||
2497 | `make-serial-process' creates a process and a buffer, on which you | |
2498 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2499 | an interactive terminal. See below for examples. | |
2500 | ||
2501 | Arguments are specified as keyword/argument pairs. The following | |
2502 | arguments are defined: | |
2503 | ||
2504 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2505 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2506 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2507 | the backslashes in strings). | |
2508 | ||
2509 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
4373fd43 | 2510 | which this function calls. |
d888760c GM |
2511 | |
2512 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2513 | the value of PORT is used. | |
2514 | ||
2515 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2516 | with the process. Process output goes at the end of that buffer, | |
2517 | unless you specify an output stream or filter function to handle the | |
2518 | output. If BUFFER is not given, the value of NAME is used. | |
2519 | ||
2520 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2521 | system used for both reading and writing for this process. If CODING | |
2522 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2523 | ENCODING is used for writing. | |
2524 | ||
2525 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2526 | the process is running. If BOOL is not given, query before exiting. | |
2527 | ||
2528 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2529 | In the stopped state, a serial process does not accept incoming data, | |
2530 | but you can send outgoing data. The stopped state is cleared by | |
2531 | `continue-process' and set by `stop-process'. | |
2532 | ||
2533 | :filter FILTER -- Install FILTER as the process filter. | |
2534 | ||
2535 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2536 | ||
2537 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2538 | ||
d888760c GM |
2539 | :bytesize |
2540 | :parity | |
2541 | :stopbits | |
2542 | :flowcontrol | |
4373fd43 GM |
2543 | -- This function calls `serial-process-configure' to handle these |
2544 | arguments. | |
d888760c GM |
2545 | |
2546 | The original argument list, possibly modified by later configuration, | |
2547 | is available via the function `process-contact'. | |
2548 | ||
2549 | Examples: | |
2550 | ||
2551 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2552 | ||
2553 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2554 | ||
2555 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2556 | ||
2557 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2558 | ||
2559 | usage: (make-serial-process &rest ARGS) */) | |
f66c7cf8 | 2560 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2561 | { |
2562 | int fd = -1; | |
2563 | Lisp_Object proc, contact, port; | |
2564 | struct Lisp_Process *p; | |
2565 | struct gcpro gcpro1; | |
2566 | Lisp_Object name, buffer; | |
2567 | Lisp_Object tem, val; | |
d311d28c | 2568 | ptrdiff_t specpdl_count = -1; |
d888760c GM |
2569 | |
2570 | if (nargs == 0) | |
2571 | return Qnil; | |
2572 | ||
2573 | contact = Flist (nargs, args); | |
2574 | GCPRO1 (contact); | |
2575 | ||
2576 | port = Fplist_get (contact, QCport); | |
2577 | if (NILP (port)) | |
2578 | error ("No port specified"); | |
2579 | CHECK_STRING (port); | |
2580 | ||
2581 | if (NILP (Fplist_member (contact, QCspeed))) | |
2582 | error (":speed not specified"); | |
2583 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2584 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2585 | ||
2586 | name = Fplist_get (contact, QCname); | |
2587 | if (NILP (name)) | |
2588 | name = port; | |
2589 | CHECK_STRING (name); | |
2590 | proc = make_process (name); | |
2591 | specpdl_count = SPECPDL_INDEX (); | |
2592 | record_unwind_protect (make_serial_process_unwind, proc); | |
2593 | p = XPROCESS (proc); | |
2594 | ||
51b59d79 | 2595 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2596 | p->infd = fd; |
2597 | p->outfd = fd; | |
2598 | if (fd > max_process_desc) | |
2599 | max_process_desc = fd; | |
2600 | chan_process[fd] = proc; | |
2601 | ||
2602 | buffer = Fplist_get (contact, QCbuffer); | |
2603 | if (NILP (buffer)) | |
2604 | buffer = name; | |
2605 | buffer = Fget_buffer_create (buffer); | |
2606 | p->buffer = buffer; | |
2607 | ||
2608 | p->childp = contact; | |
2609 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); | |
2610 | p->type = Qserial; | |
2611 | p->sentinel = Fplist_get (contact, QCsentinel); | |
2612 | p->filter = Fplist_get (contact, QCfilter); | |
2613 | p->log = Qnil; | |
2614 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
2615 | p->kill_without_query = 1; | |
2616 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
2617 | p->command = Qt; | |
2618 | p->pty_flag = 0; | |
2619 | ||
2620 | if (!EQ (p->command, Qt)) | |
2621 | { | |
2622 | FD_SET (fd, &input_wait_mask); | |
2623 | FD_SET (fd, &non_keyboard_wait_mask); | |
2624 | } | |
2625 | ||
2626 | if (BUFFERP (buffer)) | |
2627 | { | |
2628 | set_marker_both (p->mark, buffer, | |
2629 | BUF_ZV (XBUFFER (buffer)), | |
2630 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2631 | } | |
2632 | ||
2633 | tem = Fplist_member (contact, QCcoding); | |
2634 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2635 | tem = Qnil; | |
2636 | ||
2637 | val = Qnil; | |
2638 | if (!NILP (tem)) | |
2639 | { | |
2640 | val = XCAR (XCDR (tem)); | |
2641 | if (CONSP (val)) | |
2642 | val = XCAR (val); | |
2643 | } | |
2644 | else if (!NILP (Vcoding_system_for_read)) | |
2645 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2646 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2647 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c GM |
2648 | val = Qnil; |
2649 | p->decode_coding_system = val; | |
2650 | ||
2651 | val = Qnil; | |
2652 | if (!NILP (tem)) | |
2653 | { | |
2654 | val = XCAR (XCDR (tem)); | |
2655 | if (CONSP (val)) | |
2656 | val = XCDR (val); | |
2657 | } | |
2658 | else if (!NILP (Vcoding_system_for_write)) | |
2659 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2660 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2661 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c GM |
2662 | val = Qnil; |
2663 | p->encode_coding_system = val; | |
2664 | ||
2665 | setup_process_coding_systems (proc); | |
cbe81f1d | 2666 | p->decoding_buf = empty_unibyte_string; |
d888760c | 2667 | p->decoding_carryover = 0; |
cbe81f1d | 2668 | p->encoding_buf = empty_unibyte_string; |
d888760c GM |
2669 | p->inherit_coding_system_flag |
2670 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2671 | ||
ed3751c8 | 2672 | Fserial_process_configure (nargs, args); |
d888760c GM |
2673 | |
2674 | specpdl_ptr = specpdl + specpdl_count; | |
2675 | ||
2676 | UNGCPRO; | |
2677 | return proc; | |
2678 | } | |
d888760c | 2679 | |
e690ca94 KS |
2680 | /* Create a network stream/datagram client/server process. Treated |
2681 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2682 | differences are in status display and process deletion. A network |
2683 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2684 | stop/continue it and deactivate/close it via delete-process */ |
2685 | ||
177c0ea7 JB |
2686 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2687 | 0, MANY, 0, | |
e690ca94 KS |
2688 | doc: /* Create and return a network server or client process. |
2689 | ||
fa9d4315 | 2690 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2691 | input and output work as for subprocesses and `delete-process' closes |
2692 | a network connection. However, a network process has no process id, | |
d22426e1 | 2693 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2694 | processes. |
2695 | ||
2696 | Arguments are specified as keyword/argument pairs. The following | |
2697 | arguments are defined: | |
2698 | ||
2699 | :name NAME -- NAME is name for process. It is modified if necessary | |
2700 | to make it unique. | |
2701 | ||
2702 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2703 | with the process. Process output goes at end of that buffer, unless | |
2704 | you specify an output stream or filter function to handle the output. | |
2705 | BUFFER may be also nil, meaning that this process is not associated | |
2706 | with any buffer. | |
2707 | ||
2708 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2709 | address. The symbol `local' specifies the local host. If specified | |
2710 | for a server process, it must be a valid name or address for the local | |
2711 | host, and only clients connecting to that address will be accepted. | |
2712 | ||
2713 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2714 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2715 | a random port number is selected for the server. (If Emacs was |
2716 | compiled with getaddrinfo, a port number can also be specified as a | |
2717 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2718 | |
9057ff80 | 2719 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2720 | stream type connection, `datagram' creates a datagram type connection, |
2721 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2722 | |
e690ca94 | 2723 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2724 | service specified by HOST and SERVICE. The default (nil) is to use |
2725 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2726 | and port number specified by HOST and SERVICE. Other address families | |
2727 | supported are: | |
e690ca94 | 2728 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2729 | ipv4 -- use IPv4 address family only. |
2730 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2731 | |
2732 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2733 | This parameter is ignored when opening a client process. When specified | |
2734 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2735 | ||
2736 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2737 | connection. This parameter is ignored when opening a stream server | |
2738 | process. For a datagram server process, it specifies the initial | |
2739 | setting of the remote datagram address. When specified for a client | |
2740 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2741 | ||
2742 | The format of ADDRESS depends on the address family: | |
2743 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2744 | corresponding to numeric IP address A.B.C.D and port number P. | |
2745 | - A local address is represented as a string with the address in the | |
2746 | local address space. | |
2747 | - An "unsupported family" address is represented by a cons (F . AV) | |
2748 | where F is the family number and AV is a vector containing the socket | |
2749 | address data with one element per address data byte. Do not rely on | |
2750 | this format in portable code, as it may depend on implementation | |
2751 | defined constants, data sizes, and data structure alignment. | |
2752 | ||
6b61353c KH |
2753 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2754 | system used for both reading and writing for this process. If CODING | |
2755 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2756 | ENCODING is used for writing. | |
e690ca94 KS |
2757 | |
2758 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2759 | return without waiting for the connection to complete; instead, the | |
2760 | sentinel function will be called with second arg matching "open" (if | |
2761 | successful) or "failed" when the connect completes. Default is to use | |
2762 | a blocking connect (i.e. wait) for stream type connections. | |
2763 | ||
2764 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2765 | running when Emacs is exited. |
e690ca94 KS |
2766 | |
2767 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2768 | In the stopped state, a server process does not accept new | |
2769 | connections, and a client process does not handle incoming traffic. | |
2770 | The stopped state is cleared by `continue-process' and set by | |
2771 | `stop-process'. | |
2772 | ||
2773 | :filter FILTER -- Install FILTER as the process filter. | |
2774 | ||
7392e23c KS |
2775 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2776 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2777 | If this keyword is not specified, the strings are multibyte if |
016a35df | 2778 | the default value of `enable-multibyte-characters' is non-nil. |
03f04413 | 2779 | |
e690ca94 KS |
2780 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2781 | ||
2782 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2783 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2784 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2785 | is the server process, CLIENT is the new process for the connection, | |
2786 | and MESSAGE is a string. | |
2787 | ||
faa7db08 | 2788 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2789 | |
6b61353c | 2790 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2791 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2792 | If QLEN is an integer, it is used as the max. length of the server's |
2793 | pending connection queue (also known as the backlog); the default | |
2794 | queue length is 5. Default is to create a client process. | |
2795 | ||
2796 | The following network options can be specified for this connection: | |
2797 | ||
2798 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2799 | :dontroute BOOL -- Only send to directly connected hosts. | |
2800 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2801 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2802 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2803 | :priority INT -- Set protocol defined priority for sent packets. | |
2804 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2805 | (this is allowed by default for a server process). | |
2806 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2807 | special privileges on some systems. | |
2808 | ||
2809 | Consult the relevant system programmer's manual pages for more | |
2810 | information on using these options. | |
2811 | ||
2812 | ||
2813 | A server process will listen for and accept connections from clients. | |
2814 | When a client connection is accepted, a new network process is created | |
2815 | for the connection with the following parameters: | |
e690ca94 | 2816 | |
e690ca94 KS |
2817 | - The client's process name is constructed by concatenating the server |
2818 | process' NAME and a client identification string. | |
2819 | - If the FILTER argument is non-nil, the client process will not get a | |
2820 | separate process buffer; otherwise, the client's process buffer is a newly | |
2821 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2822 | NAME concatenated with the client identification string. |
e690ca94 KS |
2823 | - The connection type and the process filter and sentinel parameters are |
2824 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2825 | - The client process' contact info is set according to the client's | |
2826 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2827 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2828 | |
2829 | Notice that the FILTER and SENTINEL args are never used directly by | |
2830 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2831 | the server process, but via the optional :log function, accepted (and |
2832 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2833 | |
365aee82 KS |
2834 | The original argument list, modified with the actual connection |
2835 | information, is available via the `process-contact' function. | |
365aee82 | 2836 | |
fa9d4315 | 2837 | usage: (make-network-process &rest ARGS) */) |
f66c7cf8 | 2838 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 JB |
2839 | { |
2840 | Lisp_Object proc; | |
e690ca94 KS |
2841 | Lisp_Object contact; |
2842 | struct Lisp_Process *p; | |
70dbdb36 | 2843 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2844 | struct addrinfo ai, *res, *lres; |
e1652a86 | 2845 | struct addrinfo hints; |
8ea90aa3 DN |
2846 | const char *portstring; |
2847 | char portbuf[128]; | |
70dbdb36 | 2848 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2849 | struct _emacs_addrinfo |
2850 | { | |
2851 | int ai_family; | |
2852 | int ai_socktype; | |
2853 | int ai_protocol; | |
2854 | int ai_addrlen; | |
2855 | struct sockaddr *ai_addr; | |
2856 | struct _emacs_addrinfo *ai_next; | |
2857 | } ai, *res, *lres; | |
418b48fd | 2858 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2859 | struct sockaddr_in address_in; |
2860 | #ifdef HAVE_LOCAL_SOCKETS | |
2861 | struct sockaddr_un address_un; | |
2862 | #endif | |
2863 | int port; | |
dd2a17ab KS |
2864 | int ret = 0; |
2865 | int xerrno = 0; | |
418b48fd | 2866 | int s = -1, outch, inch; |
e690ca94 | 2867 | struct gcpro gcpro1; |
d311d28c PE |
2868 | ptrdiff_t count = SPECPDL_INDEX (); |
2869 | ptrdiff_t count1; | |
e690ca94 KS |
2870 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2871 | Lisp_Object tem; | |
2872 | Lisp_Object name, buffer, host, service, address; | |
2873 | Lisp_Object filter, sentinel; | |
2874 | int is_non_blocking_client = 0; | |
6b61353c | 2875 | int is_server = 0, backlog = 5; |
9057ff80 | 2876 | int socktype; |
e690ca94 KS |
2877 | int family = -1; |
2878 | ||
2879 | if (nargs == 0) | |
2880 | return Qnil; | |
dd2a17ab | 2881 | |
e690ca94 KS |
2882 | /* Save arguments for process-contact and clone-process. */ |
2883 | contact = Flist (nargs, args); | |
2884 | GCPRO1 (contact); | |
2885 | ||
bff3ed0a RS |
2886 | #ifdef WINDOWSNT |
2887 | /* Ensure socket support is loaded if available. */ | |
2888 | init_winsock (TRUE); | |
2889 | #endif | |
2890 | ||
9057ff80 KS |
2891 | /* :type TYPE (nil: stream, datagram */ |
2892 | tem = Fplist_get (contact, QCtype); | |
2893 | if (NILP (tem)) | |
2894 | socktype = SOCK_STREAM; | |
2895 | #ifdef DATAGRAM_SOCKETS | |
2896 | else if (EQ (tem, Qdatagram)) | |
2897 | socktype = SOCK_DGRAM; | |
f00c449b SM |
2898 | #endif |
2899 | #ifdef HAVE_SEQPACKET | |
2900 | else if (EQ (tem, Qseqpacket)) | |
2901 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 2902 | #endif |
9057ff80 KS |
2903 | else |
2904 | error ("Unsupported connection type"); | |
e690ca94 KS |
2905 | |
2906 | /* :server BOOL */ | |
2907 | tem = Fplist_get (contact, QCserver); | |
2908 | if (!NILP (tem)) | |
2909 | { | |
75728599 JR |
2910 | /* Don't support network sockets when non-blocking mode is |
2911 | not available, since a blocked Emacs is not useful. */ | |
5e617bc2 | 2912 | #if !defined (O_NONBLOCK) && !defined (O_NDELAY) |
e690ca94 KS |
2913 | error ("Network servers not supported"); |
2914 | #else | |
2915 | is_server = 1; | |
d311d28c | 2916 | if (TYPE_RANGED_INTEGERP (int, tem)) |
6b61353c | 2917 | backlog = XINT (tem); |
e690ca94 KS |
2918 | #endif |
2919 | } | |
2920 | ||
2921 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2922 | QCaddress = is_server ? QClocal : QCremote; | |
2923 | ||
d7e344cd | 2924 | /* :nowait BOOL */ |
84b31826 | 2925 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
2926 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
2927 | { | |
2928 | #ifndef NON_BLOCKING_CONNECT | |
2929 | error ("Non-blocking connect not supported"); | |
2930 | #else | |
2931 | is_non_blocking_client = 1; | |
2932 | #endif | |
2933 | } | |
2934 | ||
2935 | name = Fplist_get (contact, QCname); | |
2936 | buffer = Fplist_get (contact, QCbuffer); | |
2937 | filter = Fplist_get (contact, QCfilter); | |
2938 | sentinel = Fplist_get (contact, QCsentinel); | |
2939 | ||
b7826503 | 2940 | CHECK_STRING (name); |
e690ca94 | 2941 | |
e690ca94 KS |
2942 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
2943 | ai.ai_socktype = socktype; | |
2944 | ai.ai_protocol = 0; | |
2945 | ai.ai_next = NULL; | |
2946 | res = &ai; | |
a319f7c1 | 2947 | |
e690ca94 KS |
2948 | /* :local ADDRESS or :remote ADDRESS */ |
2949 | address = Fplist_get (contact, QCaddress); | |
2950 | if (!NILP (address)) | |
a319f7c1 | 2951 | { |
e690ca94 KS |
2952 | host = service = Qnil; |
2953 | ||
2954 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2955 | error ("Malformed :address"); | |
2956 | ai.ai_family = family; | |
2957 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2958 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2959 | goto open_socket; | |
a319f7c1 | 2960 | } |
e690ca94 KS |
2961 | |
2962 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2963 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 2964 | if (NILP (tem)) |
a319f7c1 | 2965 | { |
5e617bc2 | 2966 | #if defined (HAVE_GETADDRINFO) && defined (AF_INET6) |
e1652a86 KS |
2967 | family = AF_UNSPEC; |
2968 | #else | |
2969 | family = AF_INET; | |
e690ca94 | 2970 | #endif |
a319f7c1 | 2971 | } |
e1652a86 KS |
2972 | #ifdef HAVE_LOCAL_SOCKETS |
2973 | else if (EQ (tem, Qlocal)) | |
2974 | family = AF_LOCAL; | |
2975 | #endif | |
2976 | #ifdef AF_INET6 | |
2977 | else if (EQ (tem, Qipv6)) | |
2978 | family = AF_INET6; | |
2979 | #endif | |
2980 | else if (EQ (tem, Qipv4)) | |
2981 | family = AF_INET; | |
d311d28c | 2982 | else if (TYPE_RANGED_INTEGERP (int, tem)) |
e1652a86 KS |
2983 | family = XINT (tem); |
2984 | else | |
e690ca94 | 2985 | error ("Unknown address family"); |
e1652a86 | 2986 | |
e690ca94 KS |
2987 | ai.ai_family = family; |
2988 | ||
2989 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2990 | service = Fplist_get (contact, QCservice); | |
2991 | ||
66a9f7f4 SM |
2992 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
2993 | host = Fplist_get (contact, QChost); | |
2994 | if (!NILP (host)) | |
2995 | { | |
2996 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
2997 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
2998 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
2999 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
3000 | CHECK_STRING (host); |
3001 | } | |
3002 | ||
e690ca94 KS |
3003 | #ifdef HAVE_LOCAL_SOCKETS |
3004 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3005 | { |
66a9f7f4 SM |
3006 | if (!NILP (host)) |
3007 | { | |
3008 | message (":family local ignores the :host \"%s\" property", | |
3009 | SDATA (host)); | |
3010 | contact = Fplist_put (contact, QChost, Qnil); | |
3011 | host = Qnil; | |
3012 | } | |
b7826503 | 3013 | CHECK_STRING (service); |
72af86bd | 3014 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3015 | address_un.sun_family = AF_LOCAL; |
e99a530f PE |
3016 | if (sizeof address_un.sun_path <= SBYTES (service)) |
3017 | error ("Service name too long"); | |
3018 | strcpy (address_un.sun_path, SSDATA (service)); | |
e690ca94 KS |
3019 | ai.ai_addr = (struct sockaddr *) &address_un; |
3020 | ai.ai_addrlen = sizeof address_un; | |
3021 | goto open_socket; | |
d0d6b7c5 | 3022 | } |
e690ca94 | 3023 | #endif |
a319f7c1 | 3024 | |
798b64bb KH |
3025 | /* Slow down polling to every ten seconds. |
3026 | Some kernels have a bug which causes retrying connect to fail | |
3027 | after a connect. Polling can interfere with gethostbyname too. */ | |
3028 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3029 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3030 | { |
3031 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3032 | bind_polling_period (10); | |
3033 | } | |
798b64bb KH |
3034 | #endif |
3035 | ||
a319f7c1 | 3036 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3037 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3038 | Otherwise, use getservbyname to lookup the service. */ | |
3039 | if (!NILP (host)) | |
3040 | { | |
3041 | ||
3042 | /* SERVICE can either be a string or int. | |
3043 | Convert to a C string for later use by getaddrinfo. */ | |
3044 | if (EQ (service, Qt)) | |
3045 | portstring = "0"; | |
3046 | else if (INTEGERP (service)) | |
3047 | { | |
c2982e87 | 3048 | sprintf (portbuf, "%"pI"d", XINT (service)); |
e690ca94 KS |
3049 | portstring = portbuf; |
3050 | } | |
3051 | else | |
3052 | { | |
3053 | CHECK_STRING (service); | |
42a5b22f | 3054 | portstring = SSDATA (service); |
e690ca94 KS |
3055 | } |
3056 | ||
3057 | immediate_quit = 1; | |
3058 | QUIT; | |
3059 | memset (&hints, 0, sizeof (hints)); | |
3060 | hints.ai_flags = 0; | |
e1652a86 | 3061 | hints.ai_family = family; |
e690ca94 KS |
3062 | hints.ai_socktype = socktype; |
3063 | hints.ai_protocol = 0; | |
08116b48 CY |
3064 | |
3065 | #ifdef HAVE_RES_INIT | |
3066 | res_init (); | |
3067 | #endif | |
3068 | ||
42a5b22f | 3069 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3070 | if (ret) |
f6270f62 | 3071 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3072 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3073 | #else |
42a5b22f | 3074 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3075 | #endif |
e690ca94 | 3076 | immediate_quit = 0; |
a319f7c1 | 3077 | |
e690ca94 KS |
3078 | goto open_socket; |
3079 | } | |
3080 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3081 | |
e690ca94 KS |
3082 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3083 | has been specified (e.g. for a local server process). */ | |
3084 | ||
3085 | if (EQ (service, Qt)) | |
3086 | port = 0; | |
3087 | else if (INTEGERP (service)) | |
3088 | port = htons ((unsigned short) XINT (service)); | |
3089 | else | |
616da37c | 3090 | { |
e690ca94 KS |
3091 | struct servent *svc_info; |
3092 | CHECK_STRING (service); | |
42a5b22f | 3093 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3094 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3095 | if (svc_info == 0) | |
d5db4077 | 3096 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3097 | port = svc_info->s_port; |
3098 | } | |
3099 | ||
72af86bd | 3100 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3101 | address_in.sin_family = family; |
3102 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3103 | address_in.sin_port = port; | |
3104 | ||
3105 | #ifndef HAVE_GETADDRINFO | |
3106 | if (!NILP (host)) | |
3107 | { | |
3108 | struct hostent *host_info_ptr; | |
3109 | ||
c5e87d10 | 3110 | /* gethostbyname may fail with TRY_AGAIN, but we don't honor that, |
f3d9532b | 3111 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3112 | immediate_quit = 1; |
3113 | QUIT; | |
08116b48 CY |
3114 | |
3115 | #ifdef HAVE_RES_INIT | |
3116 | res_init (); | |
3117 | #endif | |
3118 | ||
d5db4077 | 3119 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3120 | immediate_quit = 0; |
177c0ea7 | 3121 | |
e690ca94 KS |
3122 | if (host_info_ptr) |
3123 | { | |
72af86bd AS |
3124 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3125 | host_info_ptr->h_length); | |
e690ca94 KS |
3126 | family = host_info_ptr->h_addrtype; |
3127 | address_in.sin_family = family; | |
3128 | } | |
3129 | else | |
3130 | /* Attempt to interpret host as numeric inet address */ | |
3131 | { | |
4624371d | 3132 | unsigned long numeric_addr; |
51b59d79 | 3133 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3134 | if (numeric_addr == -1) |
d5db4077 | 3135 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3136 | |
72af86bd AS |
3137 | memcpy (&address_in.sin_addr, &numeric_addr, |
3138 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3139 | } |
d0d6b7c5 | 3140 | |
e690ca94 | 3141 | } |
dd2a17ab | 3142 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3143 | |
e690ca94 KS |
3144 | ai.ai_family = family; |
3145 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3146 | ai.ai_addrlen = sizeof address_in; | |
3147 | ||
3148 | open_socket: | |
3149 | ||
dd2a17ab | 3150 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3151 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3152 | s = -1; |
457a9bee | 3153 | |
dd2a17ab KS |
3154 | for (lres = res; lres; lres = lres->ai_next) |
3155 | { | |
f66c7cf8 | 3156 | ptrdiff_t optn; |
c5101a77 | 3157 | int optbits; |
6b61353c | 3158 | |
4dc343ee | 3159 | #ifdef WINDOWSNT |
649dbf36 | 3160 | retry_connect: |
4dc343ee | 3161 | #endif |
649dbf36 | 3162 | |
dd2a17ab KS |
3163 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3164 | if (s < 0) | |
3165 | { | |
3166 | xerrno = errno; | |
3167 | continue; | |
3168 | } | |
0f2ee0c1 | 3169 | |
e690ca94 KS |
3170 | #ifdef DATAGRAM_SOCKETS |
3171 | if (!is_server && socktype == SOCK_DGRAM) | |
3172 | break; | |
3173 | #endif /* DATAGRAM_SOCKETS */ | |
3174 | ||
dd2a17ab | 3175 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3176 | if (is_non_blocking_client) |
dd2a17ab KS |
3177 | { |
3178 | #ifdef O_NONBLOCK | |
3179 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3180 | #else | |
3181 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3182 | #endif | |
3183 | if (ret < 0) | |
3184 | { | |
3185 | xerrno = errno; | |
3186 | emacs_close (s); | |
3187 | s = -1; | |
3188 | continue; | |
3189 | } | |
3190 | } | |
3191 | #endif | |
177c0ea7 | 3192 | |
dd2a17ab | 3193 | /* Make us close S if quit. */ |
dd2a17ab KS |
3194 | record_unwind_protect (close_file_unwind, make_number (s)); |
3195 | ||
6b61353c KH |
3196 | /* Parse network options in the arg list. |
3197 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3198 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3199 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3200 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3201 | ||
e690ca94 KS |
3202 | if (is_server) |
3203 | { | |
3204 | /* Configure as a server socket. */ | |
6b61353c KH |
3205 | |
3206 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3207 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3208 | #ifdef HAVE_LOCAL_SOCKETS |
3209 | if (family != AF_LOCAL) | |
3210 | #endif | |
6b61353c KH |
3211 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3212 | { | |
3213 | int optval = 1; | |
3214 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3215 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3216 | } | |
177c0ea7 | 3217 | |
e690ca94 KS |
3218 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3219 | report_file_error ("Cannot bind server socket", Qnil); | |
3220 | ||
3221 | #ifdef HAVE_GETSOCKNAME | |
3222 | if (EQ (service, Qt)) | |
3223 | { | |
3224 | struct sockaddr_in sa1; | |
401bf9b4 | 3225 | socklen_t len1 = sizeof (sa1); |
e690ca94 KS |
3226 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3227 | { | |
3228 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3229 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3230 | contact = Fplist_put (contact, QCservice, service); |
3231 | } | |
3232 | } | |
3233 | #endif | |
3234 | ||
84b31826 | 3235 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3236 | report_file_error ("Cannot listen on server socket", Qnil); |
3237 | ||
3238 | break; | |
3239 | } | |
3240 | ||
dd2a17ab KS |
3241 | immediate_quit = 1; |
3242 | QUIT; | |
3243 | ||
dd2a17ab KS |
3244 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3245 | xerrno = errno; | |
3246 | ||
dd2a17ab KS |
3247 | if (ret == 0 || xerrno == EISCONN) |
3248 | { | |
dd2a17ab KS |
3249 | /* The unwind-protect will be discarded afterwards. |
3250 | Likewise for immediate_quit. */ | |
3251 | break; | |
3252 | } | |
3253 | ||
3254 | #ifdef NON_BLOCKING_CONNECT | |
3255 | #ifdef EINPROGRESS | |
e690ca94 | 3256 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3257 | break; |
3258 | #else | |
3259 | #ifdef EWOULDBLOCK | |
e690ca94 | 3260 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3261 | break; |
3262 | #endif | |
3263 | #endif | |
3264 | #endif | |
649dbf36 CY |
3265 | |
3266 | #ifndef WINDOWSNT | |
cd591dbc HE |
3267 | if (xerrno == EINTR) |
3268 | { | |
3269 | /* Unlike most other syscalls connect() cannot be called | |
3270 | again. (That would return EALREADY.) The proper way to | |
d35af63c | 3271 | wait for completion is pselect(). */ |
401bf9b4 PE |
3272 | int sc; |
3273 | socklen_t len; | |
cd591dbc HE |
3274 | SELECT_TYPE fdset; |
3275 | retry_select: | |
3276 | FD_ZERO (&fdset); | |
3277 | FD_SET (s, &fdset); | |
3278 | QUIT; | |
d35af63c | 3279 | sc = pselect (s + 1, NULL, &fdset, NULL, NULL, NULL); |
cd591dbc HE |
3280 | if (sc == -1) |
3281 | { | |
649dbf36 | 3282 | if (errno == EINTR) |
cd591dbc | 3283 | goto retry_select; |
649dbf36 | 3284 | else |
cd591dbc HE |
3285 | report_file_error ("select failed", Qnil); |
3286 | } | |
3287 | eassert (sc > 0); | |
649dbf36 CY |
3288 | |
3289 | len = sizeof xerrno; | |
3290 | eassert (FD_ISSET (s, &fdset)); | |
3291 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3292 | report_file_error ("getsockopt failed", Qnil); | |
3293 | if (xerrno) | |
3294 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3295 | else | |
3296 | break; | |
cd591dbc | 3297 | } |
649dbf36 | 3298 | #endif /* !WINDOWSNT */ |
e333e864 | 3299 | |
0f2ee0c1 RS |
3300 | immediate_quit = 0; |
3301 | ||
dd2a17ab | 3302 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3303 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3304 | emacs_close (s); |
dd2a17ab | 3305 | s = -1; |
649dbf36 CY |
3306 | |
3307 | #ifdef WINDOWSNT | |
3308 | if (xerrno == EINTR) | |
3309 | goto retry_connect; | |
3310 | #endif | |
dd2a17ab | 3311 | } |
457a9bee | 3312 | |
e690ca94 KS |
3313 | if (s >= 0) |
3314 | { | |
3315 | #ifdef DATAGRAM_SOCKETS | |
3316 | if (socktype == SOCK_DGRAM) | |
3317 | { | |
3318 | if (datagram_address[s].sa) | |
3319 | abort (); | |
23f86fce | 3320 | datagram_address[s].sa = xmalloc (lres->ai_addrlen); |
e690ca94 KS |
3321 | datagram_address[s].len = lres->ai_addrlen; |
3322 | if (is_server) | |
3323 | { | |
3324 | Lisp_Object remote; | |
72af86bd | 3325 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3326 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3327 | { | |
3328 | int rfamily, rlen; | |
3329 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3330 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3331 | conv_lisp_to_sockaddr (rfamily, remote, | |
3332 | datagram_address[s].sa, rlen); | |
3333 | } | |
3334 | } | |
3335 | else | |
72af86bd | 3336 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3337 | } |
3338 | #endif | |
177c0ea7 | 3339 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3340 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3341 | #ifdef HAVE_GETSOCKNAME |
3342 | if (!is_server) | |
3343 | { | |
3344 | struct sockaddr_in sa1; | |
401bf9b4 | 3345 | socklen_t len1 = sizeof (sa1); |
2185db04 KS |
3346 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3347 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3348 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3349 | } |
3350 | #endif | |
e690ca94 KS |
3351 | } |
3352 | ||
54b3b62f YM |
3353 | immediate_quit = 0; |
3354 | ||
dd2a17ab | 3355 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3356 | if (res != &ai) |
54b3b62f YM |
3357 | { |
3358 | BLOCK_INPUT; | |
3359 | freeaddrinfo (res); | |
3360 | UNBLOCK_INPUT; | |
3361 | } | |
dd2a17ab KS |
3362 | #endif |
3363 | ||
e690ca94 KS |
3364 | /* Discard the unwind protect for closing S, if any. */ |
3365 | specpdl_ptr = specpdl + count1; | |
3366 | ||
3367 | /* Unwind bind_polling_period and request_sigio. */ | |
3368 | unbind_to (count, Qnil); | |
3369 | ||
dd2a17ab KS |
3370 | if (s < 0) |
3371 | { | |
dd2a17ab KS |
3372 | /* If non-blocking got this far - and failed - assume non-blocking is |
3373 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3374 | the normal blocking calls to open-network-stream handles this error |
3375 | better. */ | |
3376 | if (is_non_blocking_client) | |
dd2a17ab | 3377 | return Qnil; |
dd2a17ab | 3378 | |
d0d6b7c5 | 3379 | errno = xerrno; |
e690ca94 KS |
3380 | if (is_server) |
3381 | report_file_error ("make server process failed", contact); | |
3382 | else | |
3383 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3384 | } |
44ade2e9 | 3385 | |
d0d6b7c5 | 3386 | inch = s; |
59f23005 | 3387 | outch = s; |
d0d6b7c5 JB |
3388 | |
3389 | if (!NILP (buffer)) | |
3390 | buffer = Fget_buffer_create (buffer); | |
3391 | proc = make_process (name); | |
3392 | ||
3393 | chan_process[inch] = proc; | |
3394 | ||
3395 | #ifdef O_NONBLOCK | |
3396 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3397 | #else | |
3398 | #ifdef O_NDELAY | |
3399 | fcntl (inch, F_SETFL, O_NDELAY); | |
3400 | #endif | |
3401 | #endif | |
3402 | ||
e690ca94 KS |
3403 | p = XPROCESS (proc); |
3404 | ||
3405 | p->childp = contact; | |
faa7db08 | 3406 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
d888760c | 3407 | p->type = Qnetwork; |
177c0ea7 | 3408 | |
e690ca94 KS |
3409 | p->buffer = buffer; |
3410 | p->sentinel = sentinel; | |
3411 | p->filter = filter; | |
3412 | p->log = Fplist_get (contact, QClog); | |
3413 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
60f0fb11 | 3414 | p->kill_without_query = 1; |
e690ca94 KS |
3415 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
3416 | p->command = Qt; | |
6bfd98e7 | 3417 | p->pid = 0; |
60f0fb11 SM |
3418 | p->infd = inch; |
3419 | p->outfd = outch; | |
84b31826 | 3420 | if (is_server && socktype != SOCK_DGRAM) |
e690ca94 | 3421 | p->status = Qlisten; |
dd2a17ab | 3422 | |
f523e0c3 SM |
3423 | /* Make the process marker point into the process buffer (if any). */ |
3424 | if (BUFFERP (buffer)) | |
3425 | set_marker_both (p->mark, buffer, | |
3426 | BUF_ZV (XBUFFER (buffer)), | |
3427 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3428 | ||
dd2a17ab | 3429 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3430 | if (is_non_blocking_client) |
dd2a17ab KS |
3431 | { |
3432 | /* We may get here if connect did succeed immediately. However, | |
3433 | in that case, we still need to signal this like a non-blocking | |
3434 | connection. */ | |
e690ca94 | 3435 | p->status = Qconnect; |
dd2a17ab KS |
3436 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3437 | { | |
3438 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3439 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3440 | num_pending_connects++; |
3441 | } | |
3442 | } | |
3443 | else | |
3444 | #endif | |
e690ca94 KS |
3445 | /* A server may have a client filter setting of Qt, but it must |
3446 | still listen for incoming connects unless it is stopped. */ | |
3447 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3448 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3449 | { |
3450 | FD_SET (inch, &input_wait_mask); | |
3451 | FD_SET (inch, &non_keyboard_wait_mask); | |
3452 | } | |
3453 | ||
7d0e672e RS |
3454 | if (inch > max_process_desc) |
3455 | max_process_desc = inch; | |
d0d6b7c5 | 3456 | |
e690ca94 KS |
3457 | tem = Fplist_member (contact, QCcoding); |
3458 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3459 | tem = Qnil; /* No error message (too late!). */ | |
3460 | ||
67918941 RS |
3461 | { |
3462 | /* Setup coding systems for communicating with the network stream. */ | |
dbf31225 | 3463 | struct gcpro gcpro1; |
67918941 RS |
3464 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
3465 | Lisp_Object coding_systems = Qt; | |
b93aacde | 3466 | Lisp_Object fargs[5], val; |
67918941 | 3467 | |
e690ca94 | 3468 | if (!NILP (tem)) |
6b61353c KH |
3469 | { |
3470 | val = XCAR (XCDR (tem)); | |
3471 | if (CONSP (val)) | |
3472 | val = XCAR (val); | |
3473 | } | |
e690ca94 | 3474 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3475 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3476 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3477 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3478 | /* We dare not decode end-of-line format by setting VAL to |
3479 | Qraw_text, because the existing Emacs Lisp libraries | |
9858f6c3 | 3480 | assume that they receive bare code including a sequence of |
67918941 RS |
3481 | CR LF. */ |
3482 | val = Qnil; | |
3483 | else | |
3484 | { | |
991234f0 KS |
3485 | if (NILP (host) || NILP (service)) |
3486 | coding_systems = Qnil; | |
3487 | else | |
3488 | { | |
b93aacde PE |
3489 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3490 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3491 | GCPRO1 (proc); |
b93aacde | 3492 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3493 | UNGCPRO; |
991234f0 | 3494 | } |
67918941 | 3495 | if (CONSP (coding_systems)) |
70949dac | 3496 | val = XCAR (coding_systems); |
67918941 | 3497 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3498 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3499 | else |
3500 | val = Qnil; | |
3501 | } | |
e690ca94 | 3502 | p->decode_coding_system = val; |
0fa1789e | 3503 | |
e690ca94 | 3504 | if (!NILP (tem)) |
6b61353c KH |
3505 | { |
3506 | val = XCAR (XCDR (tem)); | |
3507 | if (CONSP (val)) | |
3508 | val = XCDR (val); | |
3509 | } | |
e690ca94 | 3510 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3511 | val = Vcoding_system_for_write; |
4b4deea2 | 3512 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3513 | val = Qnil; |
3514 | else | |
3515 | { | |
3516 | if (EQ (coding_systems, Qt)) | |
3517 | { | |
991234f0 KS |
3518 | if (NILP (host) || NILP (service)) |
3519 | coding_systems = Qnil; | |
3520 | else | |
3521 | { | |
b93aacde PE |
3522 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3523 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3524 | GCPRO1 (proc); |
b93aacde | 3525 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3526 | UNGCPRO; |
991234f0 | 3527 | } |
67918941 RS |
3528 | } |
3529 | if (CONSP (coding_systems)) | |
70949dac | 3530 | val = XCDR (coding_systems); |
67918941 | 3531 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3532 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3533 | else |
3534 | val = Qnil; | |
3535 | } | |
e690ca94 | 3536 | p->encode_coding_system = val; |
67918941 | 3537 | } |
03f04413 | 3538 | setup_process_coding_systems (proc); |
0fa1789e | 3539 | |
cbe81f1d | 3540 | p->decoding_buf = empty_unibyte_string; |
60f0fb11 | 3541 | p->decoding_carryover = 0; |
cbe81f1d | 3542 | p->encoding_buf = empty_unibyte_string; |
0fa1789e | 3543 | |
e690ca94 | 3544 | p->inherit_coding_system_flag |
e6fca843 | 3545 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3546 | |
d0d6b7c5 JB |
3547 | UNGCPRO; |
3548 | return proc; | |
3549 | } | |
d0d6b7c5 | 3550 | |
6b61353c | 3551 | \f |
5e617bc2 | 3552 | #if defined (HAVE_NET_IF_H) |
6b61353c KH |
3553 | |
3554 | #ifdef SIOCGIFCONF | |
3555 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3556 | doc: /* Return an alist of all network interfaces and their network address. | |
3557 | Each element is a cons, the car of which is a string containing the | |
3558 | interface name, and the cdr is the network address in internal | |
3559 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3560 | (void) |
6b61353c KH |
3561 | { |
3562 | struct ifconf ifconf; | |
377538cb JD |
3563 | struct ifreq *ifreq; |
3564 | void *buf = NULL; | |
70c60eb2 PE |
3565 | ptrdiff_t buf_size = 512; |
3566 | int s, i; | |
6b61353c KH |
3567 | Lisp_Object res; |
3568 | ||
3569 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3570 | if (s < 0) | |
3571 | return Qnil; | |
3572 | ||
76667214 | 3573 | do |
6b61353c | 3574 | { |
76667214 PE |
3575 | buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1); |
3576 | ifconf.ifc_buf = buf; | |
3577 | ifconf.ifc_len = buf_size; | |
156bffbe AS |
3578 | if (ioctl (s, SIOCGIFCONF, &ifconf)) |
3579 | { | |
3580 | close (s); | |
76667214 | 3581 | xfree (buf); |
156bffbe AS |
3582 | return Qnil; |
3583 | } | |
6b61353c | 3584 | } |
76667214 | 3585 | while (ifconf.ifc_len == buf_size); |
6b61353c KH |
3586 | |
3587 | close (s); | |
6b61353c KH |
3588 | |
3589 | res = Qnil; | |
156bffbe AS |
3590 | ifreq = ifconf.ifc_req; |
3591 | while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len) | |
6b61353c | 3592 | { |
377538cb JD |
3593 | struct ifreq *ifq = ifreq; |
3594 | #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN | |
156bffbe AS |
3595 | #define SIZEOF_IFREQ(sif) \ |
3596 | ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \ | |
3597 | ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len) | |
377538cb JD |
3598 | |
3599 | int len = SIZEOF_IFREQ (ifq); | |
3600 | #else | |
3601 | int len = sizeof (*ifreq); | |
3602 | #endif | |
6b61353c | 3603 | char namebuf[sizeof (ifq->ifr_name) + 1]; |
377538cb | 3604 | i += len; |
156bffbe | 3605 | ifreq = (struct ifreq *) ((char *) ifreq + len); |
377538cb | 3606 | |
6b61353c KH |
3607 | if (ifq->ifr_addr.sa_family != AF_INET) |
3608 | continue; | |
377538cb | 3609 | |
72af86bd | 3610 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3611 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3612 | res = Fcons (Fcons (build_string (namebuf), | |
3613 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3614 | sizeof (struct sockaddr))), | |
3615 | res); | |
3616 | } | |
3617 | ||
377538cb | 3618 | xfree (buf); |
6b61353c KH |
3619 | return res; |
3620 | } | |
3621 | #endif /* SIOCGIFCONF */ | |
3622 | ||
5e617bc2 | 3623 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
6b61353c KH |
3624 | |
3625 | struct ifflag_def { | |
3626 | int flag_bit; | |
91433552 | 3627 | const char *flag_sym; |
6b61353c KH |
3628 | }; |
3629 | ||
91433552 | 3630 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3631 | #ifdef IFF_UP |
3632 | { IFF_UP, "up" }, | |
3633 | #endif | |
3634 | #ifdef IFF_BROADCAST | |
3635 | { IFF_BROADCAST, "broadcast" }, | |
3636 | #endif | |
3637 | #ifdef IFF_DEBUG | |
3638 | { IFF_DEBUG, "debug" }, | |
3639 | #endif | |
3640 | #ifdef IFF_LOOPBACK | |
3641 | { IFF_LOOPBACK, "loopback" }, | |
3642 | #endif | |
3643 | #ifdef IFF_POINTOPOINT | |
3644 | { IFF_POINTOPOINT, "pointopoint" }, | |
3645 | #endif | |
3646 | #ifdef IFF_RUNNING | |
3647 | { IFF_RUNNING, "running" }, | |
3648 | #endif | |
3649 | #ifdef IFF_NOARP | |
3650 | { IFF_NOARP, "noarp" }, | |
3651 | #endif | |
3652 | #ifdef IFF_PROMISC | |
3653 | { IFF_PROMISC, "promisc" }, | |
3654 | #endif | |
3655 | #ifdef IFF_NOTRAILERS | |
377538cb JD |
3656 | #ifdef NS_IMPL_COCOA |
3657 | /* Really means smart, notrailers is obsolete */ | |
3658 | { IFF_NOTRAILERS, "smart" }, | |
3659 | #else | |
6b61353c KH |
3660 | { IFF_NOTRAILERS, "notrailers" }, |
3661 | #endif | |
377538cb | 3662 | #endif |
6b61353c KH |
3663 | #ifdef IFF_ALLMULTI |
3664 | { IFF_ALLMULTI, "allmulti" }, | |
3665 | #endif | |
3666 | #ifdef IFF_MASTER | |
3667 | { IFF_MASTER, "master" }, | |
3668 | #endif | |
3669 | #ifdef IFF_SLAVE | |
3670 | { IFF_SLAVE, "slave" }, | |
3671 | #endif | |
3672 | #ifdef IFF_MULTICAST | |
3673 | { IFF_MULTICAST, "multicast" }, | |
3674 | #endif | |
3675 | #ifdef IFF_PORTSEL | |
3676 | { IFF_PORTSEL, "portsel" }, | |
3677 | #endif | |
3678 | #ifdef IFF_AUTOMEDIA | |
3679 | { IFF_AUTOMEDIA, "automedia" }, | |
3680 | #endif | |
3681 | #ifdef IFF_DYNAMIC | |
3682 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3683 | #endif |
2026418c YM |
3684 | #ifdef IFF_OACTIVE |
3685 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3686 | #endif |
3687 | #ifdef IFF_SIMPLEX | |
3688 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3689 | #endif | |
3690 | #ifdef IFF_LINK0 | |
3691 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3692 | #endif | |
3693 | #ifdef IFF_LINK1 | |
3694 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3695 | #endif | |
3696 | #ifdef IFF_LINK2 | |
3697 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3698 | #endif |
3699 | { 0, 0 } | |
3700 | }; | |
3701 | ||
3702 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3703 | doc: /* Return information about network interface named IFNAME. | |
3704 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3705 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
e4920bc9 | 3706 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and |
6b61353c | 3707 | FLAGS is the current flags of the interface. */) |
5842a27b | 3708 | (Lisp_Object ifname) |
6b61353c KH |
3709 | { |
3710 | struct ifreq rq; | |
3711 | Lisp_Object res = Qnil; | |
3712 | Lisp_Object elt; | |
3713 | int s; | |
3714 | int any = 0; | |
0a0d27fb PE |
3715 | #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \ |
3716 | && defined HAVE_GETIFADDRS && defined LLADDR) | |
377538cb JD |
3717 | struct ifaddrs *ifap; |
3718 | #endif | |
6b61353c KH |
3719 | |
3720 | CHECK_STRING (ifname); | |
3721 | ||
e99a530f PE |
3722 | if (sizeof rq.ifr_name <= SBYTES (ifname)) |
3723 | error ("interface name too long"); | |
3724 | strcpy (rq.ifr_name, SSDATA (ifname)); | |
6b61353c KH |
3725 | |
3726 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3727 | if (s < 0) | |
3728 | return Qnil; | |
3729 | ||
3730 | elt = Qnil; | |
5e617bc2 | 3731 | #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS) |
6b61353c KH |
3732 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3733 | { | |
3734 | int flags = rq.ifr_flags; | |
91433552 | 3735 | const struct ifflag_def *fp; |
6b61353c KH |
3736 | int fnum; |
3737 | ||
377538cb JD |
3738 | /* If flags is smaller than int (i.e. short) it may have the high bit set |
3739 | due to IFF_MULTICAST. In that case, sign extending it into | |
3740 | an int is wrong. */ | |
3741 | if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags)) | |
3742 | flags = (unsigned short) rq.ifr_flags; | |
3743 | ||
bc57d757 | 3744 | any = 1; |
82a80058 | 3745 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3746 | { |
3747 | if (flags & fp->flag_bit) | |
3748 | { | |
3749 | elt = Fcons (intern (fp->flag_sym), elt); | |
3750 | flags -= fp->flag_bit; | |
3751 | } | |
3752 | } | |
fa3c87e1 | 3753 | for (fnum = 0; flags && fnum < 32; flags >>= 1, fnum++) |
6b61353c | 3754 | { |
fa3c87e1 | 3755 | if (flags & 1) |
6b61353c KH |
3756 | { |
3757 | elt = Fcons (make_number (fnum), elt); | |
3758 | } | |
3759 | } | |
3760 | } | |
3761 | #endif | |
3762 | res = Fcons (elt, res); | |
3763 | ||
3764 | elt = Qnil; | |
5e617bc2 | 3765 | #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR) |
6b61353c KH |
3766 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3767 | { | |
3768 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3769 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3770 | int n; | |
3771 | ||
bc57d757 | 3772 | any = 1; |
6b61353c KH |
3773 | for (n = 0; n < 6; n++) |
3774 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3775 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3776 | } | |
5e617bc2 | 3777 | #elif defined (HAVE_GETIFADDRS) && defined (LLADDR) |
377538cb JD |
3778 | if (getifaddrs (&ifap) != -1) |
3779 | { | |
3780 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3781 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3782 | struct ifaddrs *it; | |
3783 | ||
3784 | for (it = ifap; it != NULL; it = it->ifa_next) | |
3785 | { | |
3786 | struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr; | |
3787 | unsigned char linkaddr[6]; | |
3788 | int n; | |
3789 | ||
3790 | if (it->ifa_addr->sa_family != AF_LINK | |
3791 | || strcmp (it->ifa_name, SSDATA (ifname)) != 0 | |
3792 | || sdl->sdl_alen != 6) | |
3793 | continue; | |
3794 | ||
5e617bc2 | 3795 | memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen); |
377538cb JD |
3796 | for (n = 0; n < 6; n++) |
3797 | p->contents[n] = make_number (linkaddr[n]); | |
3798 | ||
3799 | elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr); | |
3800 | break; | |
3801 | } | |
3802 | } | |
3803 | #ifdef HAVE_FREEIFADDRS | |
3804 | freeifaddrs (ifap); | |
6b61353c | 3805 | #endif |
377538cb JD |
3806 | |
3807 | #endif /* HAVE_GETIFADDRS && LLADDR */ | |
3808 | ||
6b61353c KH |
3809 | res = Fcons (elt, res); |
3810 | ||
3811 | elt = Qnil; | |
5e617bc2 | 3812 | #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3813 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3814 | { | |
bc57d757 | 3815 | any = 1; |
2026418c | 3816 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3817 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3818 | #else |
3819 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3820 | #endif | |
6b61353c KH |
3821 | } |
3822 | #endif | |
3823 | res = Fcons (elt, res); | |
3824 | ||
3825 | elt = Qnil; | |
5e617bc2 | 3826 | #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
6b61353c KH |
3827 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3828 | { | |
bc57d757 | 3829 | any = 1; |
6b61353c KH |
3830 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); |
3831 | } | |
3832 | #endif | |
3833 | res = Fcons (elt, res); | |
3834 | ||
3835 | elt = Qnil; | |
5e617bc2 | 3836 | #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR) |
6b61353c KH |
3837 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3838 | { | |
bc57d757 | 3839 | any = 1; |
6b61353c KH |
3840 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); |
3841 | } | |
3842 | #endif | |
3843 | res = Fcons (elt, res); | |
3844 | ||
3845 | close (s); | |
3846 | ||
3847 | return any ? res : Qnil; | |
3848 | } | |
3849 | #endif | |
5e617bc2 | 3850 | #endif /* defined (HAVE_NET_IF_H) */ |
6b61353c | 3851 | |
04391069 RS |
3852 | /* Turn off input and output for process PROC. */ |
3853 | ||
40ccffa6 | 3854 | static void |
d3da34e0 | 3855 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3856 | { |
3857 | register int inchannel, outchannel; | |
3858 | register struct Lisp_Process *p = XPROCESS (proc); | |
3859 | ||
9c6c6f49 CY |
3860 | #ifdef HAVE_GNUTLS |
3861 | /* Delete GnuTLS structures in PROC, if any. */ | |
3862 | emacs_gnutls_deinit (proc); | |
3863 | #endif /* HAVE_GNUTLS */ | |
3864 | ||
60f0fb11 SM |
3865 | inchannel = p->infd; |
3866 | outchannel = p->outfd; | |
d0d6b7c5 | 3867 | |
6b61353c | 3868 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3869 | if (p->read_output_delay > 0) |
6b61353c KH |
3870 | { |
3871 | if (--process_output_delay_count < 0) | |
3872 | process_output_delay_count = 0; | |
60f0fb11 SM |
3873 | p->read_output_delay = 0; |
3874 | p->read_output_skip = 0; | |
6b61353c KH |
3875 | } |
3876 | #endif | |
f3d9532b | 3877 | |
a9f2c884 | 3878 | if (inchannel >= 0) |
d0d6b7c5 JB |
3879 | { |
3880 | /* Beware SIGCHLD hereabouts. */ | |
3881 | flush_pending_output (inchannel); | |
68c45bf0 | 3882 | emacs_close (inchannel); |
a9f2c884 | 3883 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3884 | emacs_close (outchannel); |
d0d6b7c5 | 3885 | |
60f0fb11 SM |
3886 | p->infd = -1; |
3887 | p->outfd = -1; | |
e690ca94 KS |
3888 | #ifdef DATAGRAM_SOCKETS |
3889 | if (DATAGRAM_CHAN_P (inchannel)) | |
3890 | { | |
3891 | xfree (datagram_address[inchannel].sa); | |
3892 | datagram_address[inchannel].sa = 0; | |
3893 | datagram_address[inchannel].len = 0; | |
3894 | } | |
3895 | #endif | |
d0d6b7c5 JB |
3896 | chan_process[inchannel] = Qnil; |
3897 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3898 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3899 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3900 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3901 | { | |
3902 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 3903 | FD_CLR (inchannel, &write_mask); |
dd2a17ab KS |
3904 | if (--num_pending_connects < 0) |
3905 | abort (); | |
3906 | } | |
bad49fc7 | 3907 | #endif |
7d0e672e RS |
3908 | if (inchannel == max_process_desc) |
3909 | { | |
3910 | int i; | |
3911 | /* We just closed the highest-numbered process input descriptor, | |
3912 | so recompute the highest-numbered one now. */ | |
3913 | max_process_desc = 0; | |
3914 | for (i = 0; i < MAXDESC; i++) | |
3915 | if (!NILP (chan_process[i])) | |
3916 | max_process_desc = i; | |
3917 | } | |
d0d6b7c5 JB |
3918 | } |
3919 | } | |
3920 | ||
d0d6b7c5 JB |
3921 | \f |
3922 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3923 | 0, 4, 0, |
fdb82f93 PJ |
3924 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3925 | It is read into the process' buffers or given to their filter functions. | |
3926 | Non-nil arg PROCESS means do not return until some output has been received | |
3927 | from PROCESS. | |
5088da42 | 3928 | |
2a7bb882 MR |
3929 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
3930 | and milliseconds to wait; return after that much time whether or not | |
3931 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 3932 | it specifies a fractional number of seconds to wait. |
891bd142 | 3933 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 3934 | |
107ed38d KS |
3935 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3936 | from PROCESS, suspending reading output from other processes. | |
3937 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 3938 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 3939 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 3940 | { |
d35af63c PE |
3941 | intmax_t secs; |
3942 | int nsecs; | |
d0d6b7c5 | 3943 | |
0748d150 | 3944 | if (! NILP (process)) |
b7826503 | 3945 | CHECK_PROCESS (process); |
107ed38d KS |
3946 | else |
3947 | just_this_one = Qnil; | |
0748d150 | 3948 | |
891bd142 SM |
3949 | if (!NILP (millisec)) |
3950 | { /* Obsolete calling convention using integers rather than floats. */ | |
3951 | CHECK_NUMBER (millisec); | |
3952 | if (NILP (seconds)) | |
3953 | seconds = make_float (XINT (millisec) / 1000.0); | |
3954 | else | |
3955 | { | |
3956 | CHECK_NUMBER (seconds); | |
3957 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
3958 | } | |
3959 | } | |
3960 | ||
d35af63c PE |
3961 | secs = 0; |
3962 | nsecs = -1; | |
3963 | ||
5088da42 | 3964 | if (!NILP (seconds)) |
d0d6b7c5 | 3965 | { |
d35af63c PE |
3966 | if (INTEGERP (seconds)) |
3967 | { | |
3968 | if (0 < XINT (seconds)) | |
3969 | { | |
3970 | secs = XINT (seconds); | |
3971 | nsecs = 0; | |
3972 | } | |
3973 | } | |
3974 | else if (FLOATP (seconds)) | |
3975 | { | |
3976 | if (0 < XFLOAT_DATA (seconds)) | |
3977 | { | |
3978 | EMACS_TIME t = EMACS_TIME_FROM_DOUBLE (XFLOAT_DATA (seconds)); | |
f1dd8073 | 3979 | secs = min (EMACS_SECS (t), WAIT_READING_MAX); |
d35af63c PE |
3980 | nsecs = EMACS_NSECS (t); |
3981 | } | |
3982 | } | |
3983 | else | |
3984 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 3985 | } |
d35af63c PE |
3986 | else if (! NILP (process)) |
3987 | nsecs = 0; | |
d0d6b7c5 JB |
3988 | |
3989 | return | |
d35af63c | 3990 | (wait_reading_process_output (secs, nsecs, 0, 0, |
214d6069 KS |
3991 | Qnil, |
3992 | !NILP (process) ? XPROCESS (process) : NULL, | |
3993 | NILP (just_this_one) ? 0 : | |
3994 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3995 | ? Qt : Qnil); |
3996 | } | |
3997 | ||
e690ca94 KS |
3998 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3999 | ||
4000 | static int connect_counter = 0; | |
4001 | ||
4002 | static void | |
d3da34e0 | 4003 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4004 | { |
4005 | Lisp_Object proc, caller, name, buffer; | |
4006 | Lisp_Object contact, host, service; | |
4007 | struct Lisp_Process *ps= XPROCESS (server); | |
4008 | struct Lisp_Process *p; | |
4009 | int s; | |
4010 | union u_sockaddr { | |
4011 | struct sockaddr sa; | |
4012 | struct sockaddr_in in; | |
e1652a86 KS |
4013 | #ifdef AF_INET6 |
4014 | struct sockaddr_in6 in6; | |
4015 | #endif | |
e690ca94 KS |
4016 | #ifdef HAVE_LOCAL_SOCKETS |
4017 | struct sockaddr_un un; | |
4018 | #endif | |
4019 | } saddr; | |
401bf9b4 | 4020 | socklen_t len = sizeof saddr; |
e690ca94 KS |
4021 | |
4022 | s = accept (channel, &saddr.sa, &len); | |
4023 | ||
4024 | if (s < 0) | |
4025 | { | |
4026 | int code = errno; | |
4027 | ||
4028 | if (code == EAGAIN) | |
4029 | return; | |
4030 | #ifdef EWOULDBLOCK | |
4031 | if (code == EWOULDBLOCK) | |
4032 | return; | |
4033 | #endif | |
4034 | ||
4035 | if (!NILP (ps->log)) | |
4036 | call3 (ps->log, server, Qnil, | |
4037 | concat3 (build_string ("accept failed with code"), | |
4038 | Fnumber_to_string (make_number (code)), | |
4039 | build_string ("\n"))); | |
4040 | return; | |
4041 | } | |
4042 | ||
4043 | connect_counter++; | |
4044 | ||
4045 | /* Setup a new process to handle the connection. */ | |
4046 | ||
4047 | /* Generate a unique identification of the caller, and build contact | |
4048 | information for this process. */ | |
4049 | host = Qt; | |
4050 | service = Qnil; | |
4051 | switch (saddr.sa.sa_family) | |
4052 | { | |
4053 | case AF_INET: | |
4054 | { | |
4055 | Lisp_Object args[5]; | |
4056 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4057 | args[0] = build_string ("%d.%d.%d.%d"); | |
4058 | args[1] = make_number (*ip++); | |
4059 | args[2] = make_number (*ip++); | |
4060 | args[3] = make_number (*ip++); | |
4061 | args[4] = make_number (*ip++); | |
4062 | host = Fformat (5, args); | |
4063 | service = make_number (ntohs (saddr.in.sin_port)); | |
4064 | ||
4065 | args[0] = build_string (" <%s:%d>"); | |
4066 | args[1] = host; | |
4067 | args[2] = service; | |
4068 | caller = Fformat (3, args); | |
4069 | } | |
4070 | break; | |
4071 | ||
e1652a86 KS |
4072 | #ifdef AF_INET6 |
4073 | case AF_INET6: | |
4074 | { | |
4075 | Lisp_Object args[9]; | |
4076 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4077 | int i; | |
4078 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4079 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4080 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4081 | host = Fformat (9, args); |
4082 | service = make_number (ntohs (saddr.in.sin_port)); | |
4083 | ||
4084 | args[0] = build_string (" <[%s]:%d>"); | |
4085 | args[1] = host; | |
4086 | args[2] = service; | |
4087 | caller = Fformat (3, args); | |
4088 | } | |
4089 | break; | |
4090 | #endif | |
4091 | ||
e690ca94 KS |
4092 | #ifdef HAVE_LOCAL_SOCKETS |
4093 | case AF_LOCAL: | |
4094 | #endif | |
4095 | default: | |
4096 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4097 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4098 | break; |
4099 | } | |
4100 | ||
4101 | /* Create a new buffer name for this process if it doesn't have a | |
4102 | filter. The new buffer name is based on the buffer name or | |
4103 | process name of the server process concatenated with the caller | |
4104 | identification. */ | |
4105 | ||
4106 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4107 | buffer = Qnil; | |
4108 | else | |
4109 | { | |
4110 | buffer = ps->buffer; | |
4111 | if (!NILP (buffer)) | |
4112 | buffer = Fbuffer_name (buffer); | |
4113 | else | |
4114 | buffer = ps->name; | |
4115 | if (!NILP (buffer)) | |
4116 | { | |
4117 | buffer = concat2 (buffer, caller); | |
4118 | buffer = Fget_buffer_create (buffer); | |
4119 | } | |
4120 | } | |
4121 | ||
4122 | /* Generate a unique name for the new server process. Combine the | |
4123 | server process name with the caller identification. */ | |
4124 | ||
4125 | name = concat2 (ps->name, caller); | |
4126 | proc = make_process (name); | |
4127 | ||
4128 | chan_process[s] = proc; | |
4129 | ||
4130 | #ifdef O_NONBLOCK | |
4131 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4132 | #else | |
4133 | #ifdef O_NDELAY | |
4134 | fcntl (s, F_SETFL, O_NDELAY); | |
4135 | #endif | |
4136 | #endif | |
4137 | ||
4138 | p = XPROCESS (proc); | |
4139 | ||
4140 | /* Build new contact information for this setup. */ | |
4141 | contact = Fcopy_sequence (ps->childp); | |
4142 | contact = Fplist_put (contact, QCserver, Qnil); | |
4143 | contact = Fplist_put (contact, QChost, host); | |
4144 | if (!NILP (service)) | |
4145 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4146 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4147 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4148 | #ifdef HAVE_GETSOCKNAME | |
4149 | len = sizeof saddr; | |
2185db04 | 4150 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4151 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4152 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4153 | #endif | |
4154 | ||
4155 | p->childp = contact; | |
faa7db08 | 4156 | p->plist = Fcopy_sequence (ps->plist); |
d888760c | 4157 | p->type = Qnetwork; |
ac4a7584 | 4158 | |
e690ca94 KS |
4159 | p->buffer = buffer; |
4160 | p->sentinel = ps->sentinel; | |
4161 | p->filter = ps->filter; | |
4162 | p->command = Qnil; | |
6bfd98e7 | 4163 | p->pid = 0; |
60f0fb11 SM |
4164 | p->infd = s; |
4165 | p->outfd = s; | |
e690ca94 KS |
4166 | p->status = Qrun; |
4167 | ||
4168 | /* Client processes for accepted connections are not stopped initially. */ | |
4169 | if (!EQ (p->filter, Qt)) | |
4170 | { | |
4171 | FD_SET (s, &input_wait_mask); | |
4172 | FD_SET (s, &non_keyboard_wait_mask); | |
4173 | } | |
4174 | ||
4175 | if (s > max_process_desc) | |
4176 | max_process_desc = s; | |
4177 | ||
177c0ea7 | 4178 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4179 | This seems to be the proper thing to do, as the coding system |
4180 | of the new process should reflect the settings at the time the | |
4181 | server socket was opened; not the current settings. */ | |
4182 | ||
4183 | p->decode_coding_system = ps->decode_coding_system; | |
4184 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4185 | setup_process_coding_systems (proc); |
e690ca94 | 4186 | |
cbe81f1d | 4187 | p->decoding_buf = empty_unibyte_string; |
60f0fb11 | 4188 | p->decoding_carryover = 0; |
cbe81f1d | 4189 | p->encoding_buf = empty_unibyte_string; |
e690ca94 KS |
4190 | |
4191 | p->inherit_coding_system_flag | |
60f0fb11 | 4192 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 KS |
4193 | |
4194 | if (!NILP (ps->log)) | |
4195 | call3 (ps->log, server, proc, | |
4196 | concat3 (build_string ("accept from "), | |
4197 | (STRINGP (host) ? host : build_string ("-")), | |
4198 | build_string ("\n"))); | |
4199 | ||
bed9664a | 4200 | if (!NILP (p->sentinel)) |
177c0ea7 | 4201 | exec_sentinel (proc, |
e690ca94 KS |
4202 | concat3 (build_string ("open from "), |
4203 | (STRINGP (host) ? host : build_string ("-")), | |
4204 | build_string ("\n"))); | |
4205 | } | |
4206 | ||
d0d6b7c5 JB |
4207 | /* This variable is different from waiting_for_input in keyboard.c. |
4208 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4209 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4210 | for user-input when that process-filter was called. |
4211 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4212 | lisp code is being evalled. |
4213 | This is also used in record_asynch_buffer_change. | |
4214 | For that purpose, this must be 0 | |
214d6069 | 4215 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4216 | static int waiting_for_user_input_p; |
4217 | ||
2beb96f9 | 4218 | static Lisp_Object |
d3da34e0 | 4219 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4220 | { |
4221 | waiting_for_user_input_p = XINT (data); | |
4222 | return Qnil; | |
4223 | } | |
4224 | ||
c573ae8e | 4225 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4226 | static void |
d3da34e0 | 4227 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4228 | { |
4229 | } | |
4230 | ||
d0d6b7c5 JB |
4231 | /* Read and dispose of subprocess output while waiting for timeout to |
4232 | elapse and/or keyboard input to be available. | |
4233 | ||
de6fd4b9 | 4234 | TIME_LIMIT is: |
d35af63c PE |
4235 | timeout in seconds |
4236 | If negative, gobble data immediately available but don't wait for any. | |
d0d6b7c5 | 4237 | |
d35af63c PE |
4238 | NSECS is: |
4239 | an additional duration to wait, measured in nanoseconds | |
4240 | If TIME_LIMIT is zero, then: | |
4241 | If NSECS == 0, there is no limit. | |
d188e26b | 4242 | If NSECS > 0, the timeout consists of NSECS only. |
d35af63c | 4243 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
6e4f3667 | 4244 | |
a0bee46f | 4245 | READ_KBD is: |
d0d6b7c5 JB |
4246 | 0 to ignore keyboard input, or |
4247 | 1 to return when input is available, or | |
84aa3ace | 4248 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4249 | the quit handler, or |
d0d6b7c5 | 4250 | |
de6fd4b9 | 4251 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4252 | output that arrives. |
d0d6b7c5 | 4253 | |
b89a415a KS |
4254 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4255 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4256 | |
b89a415a | 4257 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4258 | process. The return value is true if we read some input from |
b89a415a KS |
4259 | that process. |
4260 | ||
4261 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4262 | (suspending output from other processes). A negative value | |
4263 | means don't run any timers either. | |
4264 | ||
e0f24100 | 4265 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4266 | received input from that process before the timeout elapsed. |
e0f24100 | 4267 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4268 | |
dfcf069d | 4269 | int |
d35af63c | 4270 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
d5a3eaaf AS |
4271 | int do_display, |
4272 | Lisp_Object wait_for_cell, | |
4273 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4274 | { |
41d03b9a | 4275 | register int channel, nfds; |
855448dc | 4276 | SELECT_TYPE Available; |
3fad2ad2 J |
4277 | SELECT_TYPE Writeok; |
4278 | int check_write; | |
bad49fc7 | 4279 | int check_delay, no_avail; |
d0d6b7c5 JB |
4280 | int xerrno; |
4281 | Lisp_Object proc; | |
41d03b9a | 4282 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4283 | int wait_channel = -1; |
d0d6b7c5 | 4284 | int got_some_input = 0; |
d311d28c | 4285 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4286 | |
4287 | FD_ZERO (&Available); | |
3fad2ad2 | 4288 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4289 | |
d35af63c | 4290 | if (time_limit == 0 && nsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
2b0a91e7 SM |
4291 | && !(CONSP (wait_proc->status) && EQ (XCAR (wait_proc->status), Qexit))) |
4292 | message ("Blocking call to accept-process-output with quit inhibited!!"); | |
4293 | ||
b89a415a KS |
4294 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4295 | if (wait_proc != NULL) | |
60f0fb11 | 4296 | wait_channel = wait_proc->infd; |
84aa3ace | 4297 | |
2beb96f9 KS |
4298 | record_unwind_protect (wait_reading_process_output_unwind, |
4299 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4300 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 | 4301 | |
d35af63c PE |
4302 | if (time_limit < 0) |
4303 | { | |
4304 | time_limit = 0; | |
4305 | nsecs = -1; | |
4306 | } | |
4307 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
4308 | time_limit = TYPE_MAXIMUM (time_t); | |
4309 | ||
d0d6b7c5 JB |
4310 | /* Since we may need to wait several times, |
4311 | compute the absolute time to return at. */ | |
216ee680 | 4312 | if (time_limit || 0 < nsecs) |
d0d6b7c5 JB |
4313 | { |
4314 | EMACS_GET_TIME (end_time); | |
d35af63c | 4315 | EMACS_SET_SECS_NSECS (timeout, time_limit, nsecs); |
d0d6b7c5 JB |
4316 | EMACS_ADD_TIME (end_time, end_time, timeout); |
4317 | } | |
4318 | ||
d0d6b7c5 JB |
4319 | while (1) |
4320 | { | |
c0239a0b RS |
4321 | int timeout_reduced_for_timers = 0; |
4322 | ||
d0d6b7c5 JB |
4323 | /* If calling from keyboard input, do not quit |
4324 | since we want to return C-g as an input character. | |
4325 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4326 | if (read_kbd >= 0) |
d0d6b7c5 | 4327 | QUIT; |
6b61353c | 4328 | #ifdef SYNC_INPUT |
ef5eb925 | 4329 | else |
c3eff1b0 | 4330 | process_pending_signals (); |
6b61353c | 4331 | #endif |
d0d6b7c5 | 4332 | |
889255b4 | 4333 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4334 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4335 | break; |
4336 | ||
d0d6b7c5 JB |
4337 | /* Compute time from now till when time limit is up */ |
4338 | /* Exit if already run out */ | |
d35af63c | 4339 | if (nsecs < 0) |
d0d6b7c5 | 4340 | { |
216ee680 | 4341 | /* A negative timeout means |
d0d6b7c5 JB |
4342 | gobble output available now |
4343 | but don't wait at all. */ | |
4344 | ||
4345 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4346 | } | |
216ee680 | 4347 | else if (time_limit || 0 < nsecs) |
d0d6b7c5 JB |
4348 | { |
4349 | EMACS_GET_TIME (timeout); | |
d35af63c | 4350 | if (EMACS_TIME_LE (end_time, timeout)) |
d0d6b7c5 | 4351 | break; |
d35af63c | 4352 | EMACS_SUB_TIME (timeout, end_time, timeout); |
d0d6b7c5 JB |
4353 | } |
4354 | else | |
4355 | { | |
4356 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4357 | } | |
4358 | ||
f854a00b RS |
4359 | /* Normally we run timers here. |
4360 | But not if wait_for_cell; in those cases, | |
4361 | the wait is supposed to be short, | |
4362 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4363 | if (NILP (wait_for_cell) |
b89a415a | 4364 | && just_wait_proc >= 0) |
fb4c3627 | 4365 | { |
c0239a0b | 4366 | EMACS_TIME timer_delay; |
c573ae8e | 4367 | |
9baacf76 | 4368 | do |
c573ae8e | 4369 | { |
9baacf76 | 4370 | int old_timers_run = timers_run; |
c88164fe | 4371 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4372 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4373 | |
f868cd8a | 4374 | timer_delay = timer_check (); |
a2fab450 GM |
4375 | |
4376 | /* If a timer has run, this might have changed buffers | |
4377 | an alike. Make read_key_sequence aware of that. */ | |
4378 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4379 | && (old_buffer != current_buffer |
4380 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4381 | && waiting_for_user_input_p == -1) |
4382 | record_asynch_buffer_change (); | |
177c0ea7 | 4383 | |
9baacf76 GM |
4384 | if (timers_run != old_timers_run && do_display) |
4385 | /* We must retry, since a timer may have requeued itself | |
4386 | and that could alter the time_delay. */ | |
3007ebfb | 4387 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4388 | else |
4389 | break; | |
c573ae8e | 4390 | } |
9baacf76 | 4391 | while (!detect_input_pending ()); |
c573ae8e | 4392 | |
69645afc | 4393 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4394 | if (read_kbd != 0 |
69645afc RS |
4395 | && requeued_events_pending_p ()) |
4396 | break; | |
4397 | ||
216ee680 | 4398 | /* A negative timeout means do not wait at all. */ |
d35af63c | 4399 | if (0 <= nsecs) |
fb4c3627 | 4400 | { |
d35af63c | 4401 | if (EMACS_TIME_VALID_P (timer_delay)) |
c0239a0b | 4402 | { |
d35af63c PE |
4403 | if (EMACS_TIME_LT (timer_delay, timeout)) |
4404 | { | |
4405 | timeout = timer_delay; | |
4406 | timeout_reduced_for_timers = 1; | |
4407 | } | |
4408 | } | |
4409 | else | |
4410 | { | |
4411 | /* This is so a breakpoint can be put here. */ | |
4412 | wait_reading_process_output_1 (); | |
c0239a0b | 4413 | } |
c573ae8e | 4414 | } |
fb4c3627 RS |
4415 | } |
4416 | ||
90ab1a81 JB |
4417 | /* Cause C-g and alarm signals to take immediate action, |
4418 | and cause input available signals to zero out timeout. | |
4419 | ||
4420 | It is important that we do this before checking for process | |
4421 | activity. If we get a SIGCHLD after the explicit checks for | |
4422 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4423 | if (read_kbd < 0) |
90ab1a81 JB |
4424 | set_waiting_for_input (&timeout); |
4425 | ||
6be429b1 JB |
4426 | /* If status of something has changed, and no input is |
4427 | available, notify the user of the change right away. After | |
4428 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4429 | timeout to get our attention. */ |
4430 | if (update_tick != process_tick) | |
6be429b1 | 4431 | { |
bad49fc7 | 4432 | SELECT_TYPE Atemp; |
bad49fc7 | 4433 | SELECT_TYPE Ctemp; |
dd2a17ab | 4434 | |
cb768704 J |
4435 | if (kbd_on_hold_p ()) |
4436 | FD_ZERO (&Atemp); | |
4437 | else | |
4438 | Atemp = input_wait_mask; | |
3fad2ad2 | 4439 | Ctemp = write_mask; |
bad49fc7 | 4440 | |
6be429b1 | 4441 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
d35af63c PE |
4442 | if ((pselect (max (max_process_desc, max_input_desc) + 1, |
4443 | &Atemp, | |
bad49fc7 | 4444 | #ifdef NON_BLOCKING_CONNECT |
d35af63c | 4445 | (num_pending_connects > 0 ? &Ctemp : NULL), |
bad49fc7 | 4446 | #else |
d35af63c | 4447 | NULL, |
bad49fc7 | 4448 | #endif |
d35af63c | 4449 | NULL, &timeout, NULL) |
ecd1f654 | 4450 | <= 0)) |
90ab1a81 JB |
4451 | { |
4452 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4453 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4454 | clear_waiting_for_input (); |
ff6daed3 | 4455 | status_notify (NULL); |
e42bdf01 | 4456 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4457 | } |
6be429b1 JB |
4458 | } |
4459 | ||
dd2a17ab | 4460 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4461 | read whatever data has already been received. */ |
6bfd98e7 | 4462 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4463 | update_status (wait_proc); |
6bfd98e7 | 4464 | if (wait_proc |
dd2a17ab KS |
4465 | && ! EQ (wait_proc->status, Qrun) |
4466 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4467 | { |
215b45e9 | 4468 | int nread, total_nread = 0; |
7ce63188 | 4469 | |
9aa2a7f4 | 4470 | clear_waiting_for_input (); |
7ce63188 RS |
4471 | XSETPROCESS (proc, wait_proc); |
4472 | ||
4473 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4474 | while (wait_proc->infd >= 0) |
215b45e9 | 4475 | { |
60f0fb11 | 4476 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4477 | |
4478 | if (nread == 0) | |
4479 | break; | |
4480 | ||
63136da6 AS |
4481 | if (0 < nread) |
4482 | { | |
891bd142 SM |
4483 | total_nread += nread; |
4484 | got_some_input = 1; | |
4485 | } | |
215b45e9 RS |
4486 | #ifdef EIO |
4487 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4488 | break; |
e1b37c34 GM |
4489 | #endif |
4490 | #ifdef EAGAIN | |
4491 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4492 | break; |
e1b37c34 GM |
4493 | #endif |
4494 | #ifdef EWOULDBLOCK | |
4495 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4496 | break; |
215b45e9 RS |
4497 | #endif |
4498 | } | |
7ce63188 | 4499 | if (total_nread > 0 && do_display) |
3007ebfb | 4500 | redisplay_preserve_echo_area (10); |
7ce63188 | 4501 | |
9aa2a7f4 JB |
4502 | break; |
4503 | } | |
6be429b1 | 4504 | |
d0d6b7c5 JB |
4505 | /* Wait till there is something to do */ |
4506 | ||
b89a415a | 4507 | if (wait_proc && just_wait_proc) |
107ed38d | 4508 | { |
60f0fb11 | 4509 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4510 | break; |
60f0fb11 | 4511 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4512 | check_delay = 0; |
3fad2ad2 | 4513 | check_write = 0; |
107ed38d KS |
4514 | } |
4515 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4516 | { |
4517 | Available = non_process_wait_mask; | |
bad49fc7 | 4518 | check_delay = 0; |
3fad2ad2 | 4519 | check_write = 0; |
dd2a17ab | 4520 | } |
a69281ff | 4521 | else |
dd2a17ab | 4522 | { |
b89a415a | 4523 | if (! read_kbd) |
dd2a17ab KS |
4524 | Available = non_keyboard_wait_mask; |
4525 | else | |
4526 | Available = input_wait_mask; | |
3fad2ad2 | 4527 | Writeok = write_mask; |
82d6e50b J |
4528 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4529 | check_write = 0; | |
4530 | #else | |
3fad2ad2 | 4531 | check_write = 1; |
82d6e50b | 4532 | #endif |
6b61353c | 4533 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4534 | } |
d0d6b7c5 | 4535 | |
ff11dfa1 | 4536 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4537 | redisplay now, before we start to wait. There is a race |
4538 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4539 | and indicates that a frame is trashed, the select may block |
4540 | displaying a trashed screen. */ | |
5164ee8e | 4541 | if (frame_garbaged && do_display) |
7286affd RS |
4542 | { |
4543 | clear_waiting_for_input (); | |
3007ebfb | 4544 | redisplay_preserve_echo_area (11); |
b89a415a | 4545 | if (read_kbd < 0) |
7efe788e | 4546 | set_waiting_for_input (&timeout); |
7286affd | 4547 | } |
ffd56f97 | 4548 | |
029529ac CY |
4549 | /* Skip the `select' call if input is available and we're |
4550 | waiting for keyboard input or a cell change (which can be | |
4551 | triggered by processing X events). In the latter case, set | |
4552 | nfds to 1 to avoid breaking the loop. */ | |
dd2a17ab | 4553 | no_avail = 0; |
029529ac CY |
4554 | if ((read_kbd || !NILP (wait_for_cell)) |
4555 | && detect_input_pending ()) | |
0a65b032 | 4556 | { |
029529ac | 4557 | nfds = read_kbd ? 0 : 1; |
dd2a17ab | 4558 | no_avail = 1; |
0a65b032 | 4559 | } |
029529ac CY |
4560 | |
4561 | if (!no_avail) | |
dd2a17ab | 4562 | { |
6b61353c KH |
4563 | |
4564 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4565 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4566 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4567 | read_output_delay, and we are not reading output for a |
4568 | specific wait_channel. It is not executed if | |
4569 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4570 | if (process_output_skip && check_delay > 0) |
4571 | { | |
d35af63c PE |
4572 | int nsecs = EMACS_NSECS (timeout); |
4573 | if (EMACS_SECS (timeout) > 0 || nsecs > READ_OUTPUT_DELAY_MAX) | |
4574 | nsecs = READ_OUTPUT_DELAY_MAX; | |
6b61353c KH |
4575 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) |
4576 | { | |
4577 | proc = chan_process[channel]; | |
4578 | if (NILP (proc)) | |
4579 | continue; | |
db853b7a | 4580 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4581 | processes with non-zero read_output_skip. */ |
4582 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4583 | { |
4584 | check_delay--; | |
60f0fb11 | 4585 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4586 | continue; |
4587 | FD_CLR (channel, &Available); | |
60f0fb11 | 4588 | XPROCESS (proc)->read_output_skip = 0; |
d35af63c PE |
4589 | if (XPROCESS (proc)->read_output_delay < nsecs) |
4590 | nsecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4591 | } |
4592 | } | |
d35af63c | 4593 | EMACS_SET_SECS_NSECS (timeout, 0, nsecs); |
6b61353c KH |
4594 | process_output_skip = 0; |
4595 | } | |
4596 | #endif | |
0949d2b6 | 4597 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 JD |
4598 | nfds = xg_select |
4599 | #elif defined (HAVE_NS) | |
63136da6 | 4600 | nfds = ns_select |
edfda783 | 4601 | #else |
d35af63c | 4602 | nfds = pselect |
edfda783 | 4603 | #endif |
3fad2ad2 J |
4604 | (max (max_process_desc, max_input_desc) + 1, |
4605 | &Available, | |
4606 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
d35af63c | 4607 | NULL, &timeout, NULL); |
e061a11b TZ |
4608 | |
4609 | #ifdef HAVE_GNUTLS | |
4610 | /* GnuTLS buffers data internally. In lowat mode it leaves | |
4611 | some data in the TCP buffers so that select works, but | |
4612 | with custom pull/push functions we need to check if some | |
4613 | data is available in the buffers manually. */ | |
261b6fd4 LMI |
4614 | if (nfds == 0) |
4615 | { | |
4616 | if (! wait_proc) | |
4617 | { | |
4618 | /* We're not waiting on a specific process, so loop | |
16c1ad08 LMI |
4619 | through all the channels and check for data. |
4620 | This is a workaround needed for some versions of | |
4621 | the gnutls library -- 2.12.14 has been confirmed | |
4622 | to need it. See | |
4623 | http://comments.gmane.org/gmane.emacs.devel/145074 */ | |
261b6fd4 | 4624 | for (channel = 0; channel < MAXDESC; ++channel) |
5b76caa4 PE |
4625 | if (! NILP (chan_process[channel])) |
4626 | { | |
4627 | struct Lisp_Process *p = | |
4628 | XPROCESS (chan_process[channel]); | |
4629 | if (p && p->gnutls_p && p->infd | |
4630 | && ((emacs_gnutls_record_check_pending | |
4631 | (p->gnutls_state)) | |
4632 | > 0)) | |
4633 | { | |
4634 | nfds++; | |
4635 | FD_SET (p->infd, &Available); | |
4636 | } | |
4637 | } | |
261b6fd4 LMI |
4638 | } |
4639 | else | |
4640 | { | |
4641 | /* Check this specific channel. */ | |
5b76caa4 | 4642 | if (wait_proc->gnutls_p /* Check for valid process. */ |
261b6fd4 | 4643 | /* Do we have pending data? */ |
5b76caa4 PE |
4644 | && ((emacs_gnutls_record_check_pending |
4645 | (wait_proc->gnutls_state)) | |
4646 | > 0)) | |
261b6fd4 LMI |
4647 | { |
4648 | nfds = 1; | |
4649 | /* Set to Available. */ | |
4650 | FD_SET (wait_proc->infd, &Available); | |
4651 | } | |
4652 | } | |
4653 | } | |
e061a11b | 4654 | #endif |
dd2a17ab | 4655 | } |
6720a7fb | 4656 | |
d0d6b7c5 JB |
4657 | xerrno = errno; |
4658 | ||
4659 | /* Make C-g and alarm signals set flags again */ | |
4660 | clear_waiting_for_input (); | |
4661 | ||
4662 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4663 | do_pending_window_change (0); |
d0d6b7c5 | 4664 | |
d35af63c | 4665 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
216ee680 | 4666 | /* We waited the full specified time, so return now. */ |
d0d6b7c5 JB |
4667 | break; |
4668 | if (nfds < 0) | |
4669 | { | |
4670 | if (xerrno == EINTR) | |
dd2a17ab | 4671 | no_avail = 1; |
d0d6b7c5 JB |
4672 | else if (xerrno == EBADF) |
4673 | { | |
4674 | #ifdef AIX | |
4675 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4676 | the child's closure of the pts gives the parent a SIGHUP, and | |
4677 | the ptc file descriptor is automatically closed, | |
4678 | yielding EBADF here or at select() call above. | |
4679 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4680 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4681 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4682 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4683 | #else |
4684 | abort (); | |
4685 | #endif | |
4686 | } | |
4687 | else | |
68c45bf0 | 4688 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4689 | } |
dd2a17ab KS |
4690 | |
4691 | if (no_avail) | |
4692 | { | |
4693 | FD_ZERO (&Available); | |
3fad2ad2 | 4694 | check_write = 0; |
dd2a17ab KS |
4695 | } |
4696 | ||
5d5beb62 RS |
4697 | #if 0 /* When polling is used, interrupt_input is 0, |
4698 | so get_input_pending should read the input. | |
4699 | So this should not be needed. */ | |
4700 | /* If we are using polling for input, | |
4701 | and we see input available, make it get read now. | |
4702 | Otherwise it might not actually get read for a second. | |
214d6069 | 4703 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4704 | it might never get read at all if we don't spend much time |
214d6069 | 4705 | outside of wait_reading_process_output. */ |
b89a415a | 4706 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4707 | && keyboard_bit_set (&Available) |
4708 | && input_polling_used ()) | |
4709 | kill (getpid (), SIGALRM); | |
4710 | #endif | |
4711 | ||
d0d6b7c5 JB |
4712 | /* Check for keyboard input */ |
4713 | /* If there is any, return immediately | |
4714 | to give it higher priority than subprocesses */ | |
4715 | ||
b89a415a | 4716 | if (read_kbd != 0) |
6ed6233b | 4717 | { |
a2fab450 | 4718 | int old_timers_run = timers_run; |
c88164fe | 4719 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4720 | Lisp_Object old_window = selected_window; |
a2fab450 | 4721 | int leave = 0; |
177c0ea7 | 4722 | |
5d6c2aa3 | 4723 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4724 | { |
4725 | swallow_events (do_display); | |
4726 | if (detect_input_pending_run_timers (do_display)) | |
4727 | leave = 1; | |
4728 | } | |
6ed6233b | 4729 | |
a2fab450 GM |
4730 | /* If a timer has run, this might have changed buffers |
4731 | an alike. Make read_key_sequence aware of that. */ | |
4732 | if (timers_run != old_timers_run | |
c88164fe | 4733 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4734 | && (old_buffer != current_buffer |
4735 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4736 | record_asynch_buffer_change (); |
4737 | ||
4738 | if (leave) | |
4739 | break; | |
177c0ea7 JB |
4740 | } |
4741 | ||
69645afc | 4742 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4743 | if (read_kbd != 0 |
69645afc RS |
4744 | && requeued_events_pending_p ()) |
4745 | break; | |
4746 | ||
77e1b3d4 RS |
4747 | /* If we are not checking for keyboard input now, |
4748 | do process events (but don't run any timers). | |
4749 | This is so that X events will be processed. | |
0c9960e9 | 4750 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4751 | That would causes delays in pasting selections, for example. |
4752 | ||
4753 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4754 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4755 | { |
4756 | swallow_events (do_display); | |
0c9960e9 | 4757 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4758 | if (detect_input_pending ()) |
4759 | break; | |
5d5beb62 | 4760 | #endif |
0c9960e9 | 4761 | } |
f854a00b | 4762 | |
84aa3ace | 4763 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4764 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4765 | break; |
4766 | ||
4746118a | 4767 | #ifdef SIGIO |
5d5beb62 | 4768 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4769 | go read it. This can happen with X on BSD after logging out. |
4770 | In that case, there really is no input and no SIGIO, | |
4771 | but select says there is input. */ | |
4772 | ||
b89a415a | 4773 | if (read_kbd && interrupt_input |
2601f59e | 4774 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4775 | kill (getpid (), SIGIO); |
4746118a | 4776 | #endif |
d0d6b7c5 | 4777 | |
d0d6b7c5 JB |
4778 | if (! wait_proc) |
4779 | got_some_input |= nfds > 0; | |
4780 | ||
32676c08 JB |
4781 | /* If checking input just got us a size-change event from X, |
4782 | obey it now if we should. */ | |
b89a415a | 4783 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4784 | do_pending_window_change (0); |
32676c08 | 4785 | |
a9f2c884 | 4786 | /* Check for data from a process. */ |
dd2a17ab KS |
4787 | if (no_avail || nfds == 0) |
4788 | continue; | |
4789 | ||
3fad2ad2 J |
4790 | for (channel = 0; channel <= max_input_desc; ++channel) |
4791 | { | |
4792 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
4793 | if (FD_ISSET (channel, &Available) | |
4794 | && d->func != 0 | |
4795 | && (d->condition & FOR_READ) != 0) | |
4796 | d->func (channel, d->data, 1); | |
4797 | if (FD_ISSET (channel, &write_mask) | |
4798 | && d->func != 0 | |
4799 | && (d->condition & FOR_WRITE) != 0) | |
4800 | d->func (channel, d->data, 0); | |
4801 | } | |
4802 | ||
a69281ff | 4803 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4804 | { |
a69281ff | 4805 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4806 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4807 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4808 | { |
4809 | int nread; | |
4810 | ||
4811 | /* If waiting for this channel, arrange to return as | |
4812 | soon as no more input to be processed. No more | |
4813 | waiting. */ | |
4814 | if (wait_channel == channel) | |
4815 | { | |
a9f2c884 | 4816 | wait_channel = -1; |
d35af63c | 4817 | nsecs = -1; |
d0d6b7c5 JB |
4818 | got_some_input = 1; |
4819 | } | |
4820 | proc = chan_process[channel]; | |
4821 | if (NILP (proc)) | |
4822 | continue; | |
4823 | ||
e690ca94 KS |
4824 | /* If this is a server stream socket, accept connection. */ |
4825 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4826 | { | |
4827 | server_accept_connection (proc, channel); | |
4828 | continue; | |
4829 | } | |
4830 | ||
d0d6b7c5 JB |
4831 | /* Read data from the process, starting with our |
4832 | buffered-ahead character if we have one. */ | |
4833 | ||
4834 | nread = read_process_output (proc, channel); | |
4835 | if (nread > 0) | |
4836 | { | |
4837 | /* Since read_process_output can run a filter, | |
4838 | which can call accept-process-output, | |
4839 | don't try to read from any other processes | |
4840 | before doing the select again. */ | |
4841 | FD_ZERO (&Available); | |
4842 | ||
4843 | if (do_display) | |
3007ebfb | 4844 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4845 | } |
4846 | #ifdef EWOULDBLOCK | |
4847 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4848 | ; | |
0b75e9a4 | 4849 | #endif |
89d7280d RS |
4850 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4851 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4852 | #ifdef O_NONBLOCK |
4853 | else if (nread == -1 && errno == EAGAIN) | |
4854 | ; | |
4855 | #else | |
4856 | #ifdef O_NDELAY | |
4857 | else if (nread == -1 && errno == EAGAIN) | |
4858 | ; | |
4859 | /* Note that we cannot distinguish between no input | |
4860 | available now and a closed pipe. | |
4861 | With luck, a closed pipe will be accompanied by | |
4862 | subprocess termination and SIGCHLD. */ | |
d888760c | 4863 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4864 | ; |
4740825c KS |
4865 | #endif /* O_NDELAY */ |
4866 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4867 | #ifdef HAVE_PTYS |
4868 | /* On some OSs with ptys, when the process on one end of | |
4869 | a pty exits, the other end gets an error reading with | |
4870 | errno = EIO instead of getting an EOF (0 bytes read). | |
4871 | Therefore, if we get an error reading and errno = | |
4872 | EIO, just continue, because the child process has | |
4873 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4874 | get a SIGCHLD). |
4875 | ||
4876 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4877 | got lost. So raise the signal again just in case. |
5651af6d | 4878 | It can't hurt. */ |
d0d6b7c5 | 4879 | else if (nread == -1 && errno == EIO) |
4740825c | 4880 | { |
f30d612a CY |
4881 | struct Lisp_Process *p = XPROCESS (proc); |
4882 | ||
4883 | /* Clear the descriptor now, so we only raise the | |
4884 | signal once. */ | |
4885 | FD_CLR (channel, &input_wait_mask); | |
4886 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4887 | ||
4888 | if (p->pid == -2) | |
4889 | { | |
4890 | /* If the EIO occurs on a pty, sigchld_handler's | |
4891 | wait3() will not find the process object to | |
4892 | delete. Do it here. */ | |
4893 | p->tick = ++process_tick; | |
4894 | p->status = Qfailed; | |
4895 | } | |
4896 | else | |
4897 | kill (getpid (), SIGCHLD); | |
4740825c KS |
4898 | } |
4899 | #endif /* HAVE_PTYS */ | |
5063c0e1 TN |
4900 | /* If we can detect process termination, don't consider the |
4901 | process gone just because its pipe is closed. */ | |
d0d6b7c5 | 4902 | #ifdef SIGCHLD |
d888760c | 4903 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4904 | ; |
4905 | #endif | |
4906 | else | |
4907 | { | |
4908 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4909 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4910 | deactivate_process (proc); |
6bfd98e7 | 4911 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 JB |
4912 | update_status (XPROCESS (proc)); |
4913 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4914 | XPROCESS (proc)->status | |
4915 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4916 | } | |
4917 | } | |
177c0ea7 | 4918 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 4919 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 4920 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
4921 | { |
4922 | struct Lisp_Process *p; | |
dd2a17ab KS |
4923 | |
4924 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 4925 | FD_CLR (channel, &write_mask); |
dd2a17ab KS |
4926 | if (--num_pending_connects < 0) |
4927 | abort (); | |
4928 | ||
4929 | proc = chan_process[channel]; | |
4930 | if (NILP (proc)) | |
4931 | continue; | |
4932 | ||
4933 | p = XPROCESS (proc); | |
4934 | ||
4935 | #ifdef GNU_LINUX | |
4936 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 4937 | So only use it on systems where it is known to work. */ |
dd2a17ab | 4938 | { |
401bf9b4 | 4939 | socklen_t xlen = sizeof (xerrno); |
ed3751c8 | 4940 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
dd2a17ab KS |
4941 | xerrno = errno; |
4942 | } | |
4943 | #else | |
44c887be PJ |
4944 | { |
4945 | struct sockaddr pname; | |
ed3751c8 | 4946 | int pnamelen = sizeof (pname); |
44c887be PJ |
4947 | |
4948 | /* If connection failed, getpeername will fail. */ | |
4949 | xerrno = 0; | |
ed3751c8 | 4950 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
4951 | { |
4952 | /* Obtain connect failure code through error slippage. */ | |
4953 | char dummy; | |
dd2a17ab | 4954 | xerrno = errno; |
ed3751c8 | 4955 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
4956 | xerrno = errno; |
4957 | } | |
4958 | } | |
dd2a17ab KS |
4959 | #endif |
4960 | if (xerrno) | |
4961 | { | |
60f0fb11 | 4962 | p->tick = ++process_tick; |
dd2a17ab KS |
4963 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); |
4964 | deactivate_process (proc); | |
4965 | } | |
4966 | else | |
4967 | { | |
4968 | p->status = Qrun; | |
4969 | /* Execute the sentinel here. If we had relied on | |
4970 | status_notify to do it later, it will read input | |
4971 | from the process before calling the sentinel. */ | |
4972 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4973 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 4974 | { |
60f0fb11 SM |
4975 | FD_SET (p->infd, &input_wait_mask); |
4976 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
4977 | } |
4978 | } | |
4979 | } | |
4980 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4981 | } /* end for each file descriptor */ |
4982 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4983 | |
2beb96f9 | 4984 | unbind_to (count, Qnil); |
d430ee71 | 4985 | |
ffd56f97 JB |
4986 | /* If calling from keyboard input, do not quit |
4987 | since we want to return C-g as an input character. | |
4988 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4989 | if (read_kbd >= 0) |
ffd56f97 JB |
4990 | { |
4991 | /* Prevent input_pending from remaining set if we quit. */ | |
4992 | clear_input_pending (); | |
4993 | QUIT; | |
4994 | } | |
efa2a55c | 4995 | |
d0d6b7c5 JB |
4996 | return got_some_input; |
4997 | } | |
4998 | \f | |
3b9a3dfa RS |
4999 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
5000 | ||
5001 | static Lisp_Object | |
d3da34e0 | 5002 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5003 | { |
70949dac | 5004 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5005 | } |
5006 | ||
5007 | static Lisp_Object | |
b93aacde | 5008 | read_process_output_error_handler (Lisp_Object error_val) |
3b9a3dfa | 5009 | { |
b93aacde | 5010 | cmd_error_internal (error_val, "error in process filter: "); |
3b9a3dfa RS |
5011 | Vinhibit_quit = Qt; |
5012 | update_echo_area (); | |
833ba342 | 5013 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5014 | return Qt; |
3b9a3dfa RS |
5015 | } |
5016 | ||
d0d6b7c5 JB |
5017 | /* Read pending output from the process channel, |
5018 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5019 | Yield number of decoded characters read. |
d0d6b7c5 | 5020 | |
116c423c | 5021 | This function reads at most 4096 characters. |
d0d6b7c5 | 5022 | If you want to read all available subprocess output, |
0fa1789e KH |
5023 | you must call it repeatedly until it returns zero. |
5024 | ||
5025 | The characters read are decoded according to PROC's coding-system | |
5026 | for decoding. */ | |
d0d6b7c5 | 5027 | |
ff6daed3 | 5028 | static int |
d3da34e0 | 5029 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5030 | { |
368f4090 | 5031 | register ssize_t nbytes; |
d0d6b7c5 | 5032 | char *chars; |
d0d6b7c5 | 5033 | register Lisp_Object outstream; |
d0d6b7c5 | 5034 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 5035 | register ptrdiff_t opoint; |
c7580538 | 5036 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5037 | int carryover = p->decoding_carryover; |
116c423c | 5038 | int readmax = 4096; |
d311d28c | 5039 | ptrdiff_t count = SPECPDL_INDEX (); |
3a4fa2f2 | 5040 | Lisp_Object odeactivate; |
d0d6b7c5 | 5041 | |
38182d90 | 5042 | chars = alloca (carryover + readmax); |
e7fbaa65 KH |
5043 | if (carryover) |
5044 | /* See the comment above. */ | |
72af86bd | 5045 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5046 | |
e690ca94 KS |
5047 | #ifdef DATAGRAM_SOCKETS |
5048 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5049 | if (DATAGRAM_CHAN_P (channel)) | |
5050 | { | |
401bf9b4 | 5051 | socklen_t len = datagram_address[channel].len; |
39b1da20 | 5052 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5053 | 0, datagram_address[channel].sa, &len); |
5054 | } | |
5055 | else | |
5056 | #endif | |
6b61353c | 5057 | { |
82eaa333 PE |
5058 | int buffered = 0 <= proc_buffered_char[channel]; |
5059 | if (buffered) | |
5060 | { | |
5061 | chars[carryover] = proc_buffered_char[channel]; | |
5062 | proc_buffered_char[channel] = -1; | |
5063 | } | |
8af55556 | 5064 | #ifdef HAVE_GNUTLS |
959ad23f AS |
5065 | if (p->gnutls_p) |
5066 | nbytes = emacs_gnutls_read (p, chars + carryover + buffered, | |
82eaa333 | 5067 | readmax - buffered); |
8af55556 TZ |
5068 | else |
5069 | #endif | |
82eaa333 PE |
5070 | nbytes = emacs_read (channel, chars + carryover + buffered, |
5071 | readmax - buffered); | |
6b61353c | 5072 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5073 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5074 | { |
60f0fb11 | 5075 | int delay = p->read_output_delay; |
6b61353c KH |
5076 | if (nbytes < 256) |
5077 | { | |
5078 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5079 | { | |
5080 | if (delay == 0) | |
5081 | process_output_delay_count++; | |
5082 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5083 | } | |
5084 | } | |
82eaa333 | 5085 | else if (delay > 0 && nbytes == readmax - buffered) |
6b61353c KH |
5086 | { |
5087 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5088 | if (delay == 0) | |
5089 | process_output_delay_count--; | |
5090 | } | |
60f0fb11 | 5091 | p->read_output_delay = delay; |
6b61353c KH |
5092 | if (delay) |
5093 | { | |
60f0fb11 | 5094 | p->read_output_skip = 1; |
6b61353c KH |
5095 | process_output_skip = 1; |
5096 | } | |
5097 | } | |
5098 | #endif | |
fe07cdfa PE |
5099 | nbytes += buffered; |
5100 | nbytes += buffered && nbytes <= 0; | |
d0d6b7c5 | 5101 | } |
d0d6b7c5 | 5102 | |
60f0fb11 | 5103 | p->decoding_carryover = 0; |
ca65341e | 5104 | |
ed7a4b2d | 5105 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5106 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5107 | if (nbytes <= 0) |
5108 | { | |
5109 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5110 | return nbytes; | |
5111 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5112 | } | |
d0d6b7c5 | 5113 | |
1d2fc612 | 5114 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5115 | nbytes += carryover; |
0fa1789e | 5116 | |
3a4fa2f2 SM |
5117 | odeactivate = Vdeactivate_mark; |
5118 | /* There's no good reason to let process filters change the current | |
5119 | buffer, and many callers of accept-process-output, sit-for, and | |
5120 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 5121 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
3a4fa2f2 | 5122 | |
1d2fc612 | 5123 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
5124 | outstream = p->filter; |
5125 | if (!NILP (outstream)) | |
5126 | { | |
1d2fc612 | 5127 | Lisp_Object text; |
4da2f5be | 5128 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5129 | int waiting = waiting_for_user_input_p; |
30c78175 | 5130 | |
dfc21838 RS |
5131 | /* No need to gcpro these, because all we do with them later |
5132 | is test them for EQness, and none of them should be a string. */ | |
aba7731a PE |
5133 | #if 0 |
5134 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 5135 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 5136 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 5137 | #endif |
30c78175 | 5138 | |
3a4fa2f2 SM |
5139 | /* We inhibit quit here instead of just catching it so that |
5140 | hitting ^G when a filter happens to be running won't screw | |
5141 | it up. */ | |
d0d6b7c5 | 5142 | specbind (Qinhibit_quit, Qt); |
6545aada | 5143 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5144 | |
4da2f5be RS |
5145 | /* In case we get recursively called, |
5146 | and we already saved the match data nonrecursively, | |
5147 | save the same match data in safely recursive fashion. */ | |
5148 | if (outer_running_asynch_code) | |
5149 | { | |
5150 | Lisp_Object tem; | |
5151 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5152 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5153 | restore_search_regs (); | |
5154 | record_unwind_save_match_data (); | |
5155 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5156 | } |
5157 | ||
5158 | /* For speed, if a search happens within this code, | |
5159 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5160 | running_asynch_code = 1; |
4da2f5be | 5161 | |
400a67ff | 5162 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 | 5163 | text = coding->dst_object; |
5bbf78c1 | 5164 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5165 | /* A new coding system might be found. */ |
5bbf78c1 | 5166 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5167 | { |
5bbf78c1 | 5168 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d KH |
5169 | |
5170 | /* Don't call setup_coding_system for | |
5171 | proc_decode_coding_system[channel] here. It is done in | |
5172 | detect_coding called via decode_coding above. */ | |
5173 | ||
5174 | /* If a coding system for encoding is not yet decided, we set | |
5175 | it as the same as coding-system for decoding. | |
5176 | ||
5177 | But, before doing that we must check if | |
5178 | proc_encode_coding_system[p->outfd] surely points to a | |
5179 | valid memory because p->outfd will be changed once EOF is | |
5180 | sent to the process. */ | |
5181 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5182 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5183 | { |
76d812bb KH |
5184 | p->encode_coding_system |
5185 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5186 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5187 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5188 | } |
5189 | } | |
51c6067d | 5190 | |
dd8c7a53 KH |
5191 | if (coding->carryover_bytes > 0) |
5192 | { | |
04961398 KH |
5193 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5194 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5195 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5196 | coding->carryover_bytes); | |
8c406a9b | 5197 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5198 | } |
e430e5ba | 5199 | if (SBYTES (text) > 0) |
963b492b SM |
5200 | /* FIXME: It's wrong to wrap or not based on debug-on-error, and |
5201 | sometimes it's simply wrong to wrap (e.g. when called from | |
5202 | accept-process-output). */ | |
dd97db06 KH |
5203 | internal_condition_case_1 (read_process_output_call, |
5204 | Fcons (outstream, | |
5205 | Fcons (proc, Fcons (text, Qnil))), | |
5206 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5207 | read_process_output_error_handler); | |
4da2f5be RS |
5208 | |
5209 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5210 | restore_search_regs (); |
4da2f5be | 5211 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5212 | |
bbce7d72 RS |
5213 | /* Restore waiting_for_user_input_p as it was |
5214 | when we were called, in case the filter clobbered it. */ | |
5215 | waiting_for_user_input_p = waiting; | |
5216 | ||
7973cfa8 RS |
5217 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5218 | because we might have changed minor modes or other things | |
5219 | that affect key bindings. */ | |
dfc21838 RS |
5220 | if (! EQ (Fcurrent_buffer (), obuffer) |
5221 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5222 | #endif |
927e08be RS |
5223 | /* But do it only if the caller is actually going to read events. |
5224 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5225 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5226 | if (waiting_for_user_input_p == -1) |
5227 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5228 | } |
5229 | ||
5230 | /* If no filter, write into buffer if it isn't dead. */ | |
4b4deea2 | 5231 | else if (!NILP (p->buffer) && !NILP (BVAR (XBUFFER (p->buffer), name))) |
d0d6b7c5 | 5232 | { |
b0310da4 | 5233 | Lisp_Object old_read_only; |
d311d28c PE |
5234 | ptrdiff_t old_begv, old_zv; |
5235 | ptrdiff_t old_begv_byte, old_zv_byte; | |
5236 | ptrdiff_t before, before_byte; | |
5237 | ptrdiff_t opoint_byte; | |
ed7a4b2d | 5238 | Lisp_Object text; |
926b7e5e | 5239 | struct buffer *b; |
30c78175 | 5240 | |
d0d6b7c5 | 5241 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5242 | opoint = PT; |
d8a2934e | 5243 | opoint_byte = PT_BYTE; |
4b4deea2 | 5244 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5245 | old_begv = BEGV; |
5246 | old_zv = ZV; | |
d8a2934e RS |
5247 | old_begv_byte = BEGV_BYTE; |
5248 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5249 | |
4b4deea2 | 5250 | BVAR (current_buffer, read_only) = Qnil; |
d0d6b7c5 JB |
5251 | |
5252 | /* Insert new output into buffer | |
5253 | at the current end-of-output marker, | |
5254 | thus preserving logical ordering of input and output. */ | |
5255 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5256 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5257 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5258 | ZV_BYTE)); | |
d0d6b7c5 | 5259 | else |
d8a2934e | 5260 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5261 | before = PT; |
d8a2934e | 5262 | before_byte = PT_BYTE; |
b0310da4 JB |
5263 | |
5264 | /* If the output marker is outside of the visible region, save | |
5265 | the restriction and widen. */ | |
6ec8bbd2 | 5266 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5267 | Fwiden (); |
5268 | ||
400a67ff | 5269 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 KH |
5270 | text = coding->dst_object; |
5271 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5272 | /* A new coding system might be found. See the comment in the |
5273 | similar code in the previous `if' block. */ | |
5bbf78c1 | 5274 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5275 | { |
5bbf78c1 | 5276 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d | 5277 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5278 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5279 | { |
76d812bb KH |
5280 | p->encode_coding_system |
5281 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5282 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5283 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5284 | } |
5285 | } | |
dd8c7a53 KH |
5286 | if (coding->carryover_bytes > 0) |
5287 | { | |
04961398 KH |
5288 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5289 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5290 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5291 | coding->carryover_bytes); | |
8c406a9b | 5292 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5293 | } |
d69864bf | 5294 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5295 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5296 | != ! STRING_MULTIBYTE (text)) |
5297 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5298 | ? Fstring_as_unibyte (text) |
03f04413 | 5299 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5300 | /* Insert before markers in case we are inserting where |
5301 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5302 | insert_from_string_before_markers (text, 0, 0, |
5303 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5304 | |
926b7e5e GM |
5305 | /* Make sure the process marker's position is valid when the |
5306 | process buffer is changed in the signal_after_change above. | |
5307 | W3 is known to do that. */ | |
5308 | if (BUFFERP (p->buffer) | |
5309 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5310 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5311 | else | |
5312 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5313 | |
d0d6b7c5 JB |
5314 | update_mode_lines++; |
5315 | ||
12ca5cdf RS |
5316 | /* Make sure opoint and the old restrictions |
5317 | float ahead of any new text just as point would. */ | |
5318 | if (opoint >= before) | |
d8a2934e RS |
5319 | { |
5320 | opoint += PT - before; | |
5321 | opoint_byte += PT_BYTE - before_byte; | |
5322 | } | |
12ca5cdf | 5323 | if (old_begv > before) |
d8a2934e RS |
5324 | { |
5325 | old_begv += PT - before; | |
5326 | old_begv_byte += PT_BYTE - before_byte; | |
5327 | } | |
12ca5cdf | 5328 | if (old_zv >= before) |
d8a2934e RS |
5329 | { |
5330 | old_zv += PT - before; | |
5331 | old_zv_byte += PT_BYTE - before_byte; | |
5332 | } | |
12ca5cdf | 5333 | |
b0310da4 | 5334 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5335 | if (old_begv != BEGV || old_zv != ZV) |
5336 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5337 | |
30c78175 | 5338 | |
4b4deea2 | 5339 | BVAR (current_buffer, read_only) = old_read_only; |
d8a2934e | 5340 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5341 | } |
3a4fa2f2 SM |
5342 | /* Handling the process output should not deactivate the mark. */ |
5343 | Vdeactivate_mark = odeactivate; | |
5344 | ||
5345 | unbind_to (count, Qnil); | |
1d2fc612 | 5346 | return nbytes; |
d0d6b7c5 | 5347 | } |
d0d6b7c5 JB |
5348 | \f |
5349 | /* Sending data to subprocess */ | |
5350 | ||
40ccffa6 PE |
5351 | static jmp_buf send_process_frame; |
5352 | static Lisp_Object process_sent_to; | |
d0d6b7c5 | 5353 | |
006c5daa | 5354 | #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD |
845ca893 | 5355 | static _Noreturn void send_process_trap (int); |
006c5daa PE |
5356 | #endif |
5357 | ||
9af30bdf | 5358 | static void |
d3da34e0 | 5359 | send_process_trap (int ignore) |
d0d6b7c5 | 5360 | { |
333f1b6f | 5361 | SIGNAL_THREAD_CHECK (SIGPIPE); |
c8f44005 | 5362 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5363 | longjmp (send_process_frame, 1); |
5364 | } | |
5365 | ||
20ca2e94 TN |
5366 | /* In send_process, when a write fails temporarily, |
5367 | wait_reading_process_output is called. It may execute user code, | |
5368 | e.g. timers, that attempts to write new data to the same process. | |
5369 | We must ensure that data is sent in the right order, and not | |
5370 | interspersed half-completed with other writes (Bug#10815). This is | |
5371 | handled by the write_queue element of struct process. It is a list | |
5372 | with each entry having the form | |
5373 | ||
5374 | (string . (offset . length)) | |
5375 | ||
5376 | where STRING is a lisp string, OFFSET is the offset into the | |
5377 | string's byte sequence from which we should begin to send, and | |
5378 | LENGTH is the number of bytes left to send. */ | |
5379 | ||
5380 | /* Create a new entry in write_queue. | |
5381 | INPUT_OBJ should be a buffer, string Qt, or Qnil. | |
5382 | BUF is a pointer to the string sequence of the input_obj or a C | |
5383 | string in case of Qt or Qnil. */ | |
5384 | ||
5385 | static void | |
5386 | write_queue_push (struct Lisp_Process *p, Lisp_Object input_obj, | |
7ea2b339 | 5387 | const char *buf, ptrdiff_t len, int front) |
20ca2e94 | 5388 | { |
7ea2b339 | 5389 | ptrdiff_t offset; |
20ca2e94 TN |
5390 | Lisp_Object entry, obj; |
5391 | ||
5392 | if (STRINGP (input_obj)) | |
5393 | { | |
5394 | offset = buf - SSDATA (input_obj); | |
5395 | obj = input_obj; | |
5396 | } | |
5397 | else | |
5398 | { | |
5399 | offset = 0; | |
5400 | obj = make_unibyte_string (buf, len); | |
5401 | } | |
5402 | ||
5403 | entry = Fcons (obj, Fcons (make_number (offset), make_number (len))); | |
5404 | ||
5405 | if (front) | |
5406 | p->write_queue = Fcons (entry, p->write_queue); | |
5407 | else | |
5408 | p->write_queue = nconc2 (p->write_queue, Fcons (entry, Qnil)); | |
5409 | } | |
5410 | ||
5411 | /* Remove the first element in the write_queue of process P, put its | |
5412 | contents in OBJ, BUF and LEN, and return non-zero. If the | |
5413 | write_queue is empty, return zero. */ | |
5414 | ||
5415 | static int | |
5416 | write_queue_pop (struct Lisp_Process *p, Lisp_Object *obj, | |
7ea2b339 | 5417 | const char **buf, ptrdiff_t *len) |
20ca2e94 TN |
5418 | { |
5419 | Lisp_Object entry, offset_length; | |
7ea2b339 | 5420 | ptrdiff_t offset; |
20ca2e94 TN |
5421 | |
5422 | if (NILP (p->write_queue)) | |
5423 | return 0; | |
5424 | ||
5425 | entry = XCAR (p->write_queue); | |
5426 | p->write_queue = XCDR (p->write_queue); | |
5427 | ||
5428 | *obj = XCAR (entry); | |
5429 | offset_length = XCDR (entry); | |
5430 | ||
5431 | *len = XINT (XCDR (offset_length)); | |
5432 | offset = XINT (XCAR (offset_length)); | |
7ea2b339 | 5433 | *buf = SSDATA (*obj) + offset; |
20ca2e94 TN |
5434 | |
5435 | return 1; | |
5436 | } | |
5437 | ||
4556b700 RS |
5438 | /* Send some data to process PROC. |
5439 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5440 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5441 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5442 | |
a92e4183 KH |
5443 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5444 | for encoding before it is sent. | |
1fb0098c GM |
5445 | |
5446 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5447 | |
ff6daed3 | 5448 | static void |
400a67ff | 5449 | send_process (volatile Lisp_Object proc, const char *volatile buf, |
d311d28c | 5450 | volatile ptrdiff_t len, volatile Lisp_Object object) |
d0d6b7c5 | 5451 | { |
ecd1f654 | 5452 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5453 | struct Lisp_Process *p = XPROCESS (proc); |
368f4090 | 5454 | ssize_t rv; |
0fa1789e | 5455 | struct coding_system *coding; |
9af30bdf | 5456 | void (*volatile old_sigpipe) (int); |
6044e593 | 5457 | |
6bfd98e7 | 5458 | if (p->raw_status_new) |
6b61353c KH |
5459 | update_status (p); |
5460 | if (! EQ (p->status, Qrun)) | |
5461 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5462 | if (p->outfd < 0) |
6b61353c | 5463 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5464 | |
60f0fb11 | 5465 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5466 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5467 | |
ed7a4b2d KH |
5468 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5469 | || (BUFFERP (object) | |
4b4deea2 | 5470 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5471 | || EQ (object, Qt)) |
278bfdd6 | 5472 | { |
fcaf8878 KH |
5473 | p->encode_coding_system |
5474 | = complement_process_encoding_system (p->encode_coding_system); | |
6b61353c | 5475 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
fcaf8878 KH |
5476 | { |
5477 | /* The coding system for encoding was changed to raw-text | |
5478 | because we sent a unibyte text previously. Now we are | |
5479 | sending a multibyte text, thus we must encode it by the | |
5480 | original coding system specified for the current process. | |
5481 | ||
da6062e6 PE |
5482 | Another reason we come here is that the coding system |
5483 | was just complemented and a new one was returned by | |
fcaf8878 KH |
5484 | complement_process_encoding_system. */ |
5485 | setup_coding_system (p->encode_coding_system, coding); | |
5486 | Vlast_coding_system_used = p->encode_coding_system; | |
5487 | } | |
e08bbb84 | 5488 | coding->src_multibyte = 1; |
278bfdd6 KH |
5489 | } |
5490 | else | |
5491 | { | |
a0241d01 | 5492 | coding->src_multibyte = 0; |
a92e4183 KH |
5493 | /* For sending a unibyte text, character code conversion should |
5494 | not take place but EOL conversion should. So, setup raw-text | |
5495 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5496 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5497 | { |
5498 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5499 | { | |
5500 | /* But, before changing the coding, we must flush out data. */ | |
5501 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5502 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5503 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5504 | } |
5bbf78c1 KH |
5505 | setup_coding_system (raw_text_coding_system |
5506 | (Vlast_coding_system_used), | |
5507 | coding); | |
e08bbb84 | 5508 | coding->src_multibyte = 0; |
a92e4183 | 5509 | } |
278bfdd6 | 5510 | } |
a4a37e65 KH |
5511 | coding->dst_multibyte = 0; |
5512 | ||
ed7a4b2d | 5513 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5514 | { |
5bbf78c1 | 5515 | coding->dst_object = Qt; |
ed7a4b2d | 5516 | if (BUFFERP (object)) |
0fa1789e | 5517 | { |
d311d28c PE |
5518 | ptrdiff_t from_byte, from, to; |
5519 | ptrdiff_t save_pt, save_pt_byte; | |
5bbf78c1 KH |
5520 | struct buffer *cur = current_buffer; |
5521 | ||
5522 | set_buffer_internal (XBUFFER (object)); | |
5523 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5524 | ||
400a67ff | 5525 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5526 | from = BYTE_TO_CHAR (from_byte); |
5527 | to = BYTE_TO_CHAR (from_byte + len); | |
5528 | TEMP_SET_PT_BOTH (from, from_byte); | |
5529 | encode_coding_object (coding, object, from, from_byte, | |
5530 | to, from_byte + len, Qt); | |
5531 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5532 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5533 | } |
5534 | else if (STRINGP (object)) | |
5535 | { | |
550c8289 KH |
5536 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5537 | SBYTES (object), Qt); | |
0fa1789e | 5538 | } |
5bbf78c1 | 5539 | else |
452294c2 | 5540 | { |
5bbf78c1 KH |
5541 | coding->dst_object = make_unibyte_string (buf, len); |
5542 | coding->produced = len; | |
452294c2 | 5543 | } |
ed7a4b2d | 5544 | |
e7fbaa65 | 5545 | len = coding->produced; |
347f3cd3 | 5546 | object = coding->dst_object; |
400a67ff | 5547 | buf = SSDATA (object); |
0fa1789e | 5548 | } |
d0d6b7c5 | 5549 | |
4556b700 RS |
5550 | if (pty_max_bytes == 0) |
5551 | { | |
5552 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5553 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5554 | if (pty_max_bytes < 0) |
5555 | pty_max_bytes = 250; | |
5556 | #else | |
5557 | pty_max_bytes = 250; | |
5558 | #endif | |
5559 | /* Deduct one, to leave space for the eof. */ | |
5560 | pty_max_bytes--; | |
5561 | } | |
5562 | ||
0daad115 GM |
5563 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5564 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5565 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5566 | if (!setjmp (send_process_frame)) |
0daad115 | 5567 | { |
006c5daa | 5568 | p = XPROCESS (proc); /* Repair any setjmp clobbering. */ |
0daad115 | 5569 | process_sent_to = proc; |
20ca2e94 TN |
5570 | |
5571 | /* If there is already data in the write_queue, put the new data | |
5572 | in the back of queue. Otherwise, ignore it. */ | |
5573 | if (!NILP (p->write_queue)) | |
5574 | write_queue_push (p, object, buf, len, 0); | |
5575 | ||
5576 | do /* while !NILP (p->write_queue) */ | |
0daad115 | 5577 | { |
7ea2b339 | 5578 | ptrdiff_t cur_len = -1; |
20ca2e94 TN |
5579 | const char *cur_buf; |
5580 | Lisp_Object cur_object; | |
5581 | ||
5582 | /* If write_queue is empty, ignore it. */ | |
5583 | if (!write_queue_pop (p, &cur_object, &cur_buf, &cur_len)) | |
5584 | { | |
5585 | cur_len = len; | |
5586 | cur_buf = buf; | |
5587 | cur_object = object; | |
5588 | } | |
93b4f699 | 5589 | |
20ca2e94 | 5590 | while (cur_len > 0) |
0daad115 | 5591 | { |
20ca2e94 | 5592 | /* Send this batch, using one or more write calls. */ |
d311d28c | 5593 | ptrdiff_t written = 0; |
60f0fb11 | 5594 | int outfd = p->outfd; |
9af30bdf | 5595 | old_sigpipe = (void (*) (int)) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5596 | #ifdef DATAGRAM_SOCKETS |
5597 | if (DATAGRAM_CHAN_P (outfd)) | |
5598 | { | |
20ca2e94 | 5599 | rv = sendto (outfd, cur_buf, cur_len, |
e690ca94 KS |
5600 | 0, datagram_address[outfd].sa, |
5601 | datagram_address[outfd].len); | |
273a5f82 PE |
5602 | if (0 <= rv) |
5603 | written = rv; | |
5604 | else if (errno == EMSGSIZE) | |
c8f44005 RS |
5605 | { |
5606 | signal (SIGPIPE, old_sigpipe); | |
5607 | report_file_error ("sending datagram", | |
5608 | Fcons (proc, Qnil)); | |
5609 | } | |
e690ca94 KS |
5610 | } |
5611 | else | |
5612 | #endif | |
6b61353c | 5613 | { |
8af55556 | 5614 | #ifdef HAVE_GNUTLS |
959ad23f | 5615 | if (p->gnutls_p) |
20ca2e94 | 5616 | written = emacs_gnutls_write (p, cur_buf, cur_len); |
8af55556 TZ |
5617 | else |
5618 | #endif | |
20ca2e94 | 5619 | written = emacs_write (outfd, cur_buf, cur_len); |
086e8c47 | 5620 | rv = (written ? 0 : -1); |
6b61353c | 5621 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
5622 | if (p->read_output_delay > 0 |
5623 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5624 | { |
60f0fb11 | 5625 | p->read_output_delay = 0; |
6b61353c | 5626 | process_output_delay_count--; |
60f0fb11 | 5627 | p->read_output_skip = 0; |
6b61353c KH |
5628 | } |
5629 | #endif | |
5630 | } | |
0daad115 | 5631 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5632 | |
0daad115 GM |
5633 | if (rv < 0) |
5634 | { | |
5635 | if (0 | |
d0d6b7c5 | 5636 | #ifdef EWOULDBLOCK |
0daad115 | 5637 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5638 | #endif |
5639 | #ifdef EAGAIN | |
0daad115 | 5640 | || errno == EAGAIN |
d0d6b7c5 | 5641 | #endif |
0daad115 | 5642 | ) |
177c0ea7 | 5643 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5644 | that may allow the program |
5645 | to finish doing output and read more. */ | |
5646 | { | |
3433b6bd | 5647 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5648 | /* A gross hack to work around a bug in FreeBSD. |
5649 | In the following sequence, read(2) returns | |
5650 | bogus data: | |
5651 | ||
5652 | write(2) 1022 bytes | |
5653 | write(2) 954 bytes, get EAGAIN | |
5654 | read(2) 1024 bytes in process_read_output | |
5655 | read(2) 11 bytes in process_read_output | |
5656 | ||
5657 | That is, read(2) returns more bytes than have | |
5658 | ever been written successfully. The 1033 bytes | |
5659 | read are the 1022 bytes written successfully | |
5660 | after processing (for example with CRs added if | |
5661 | the terminal is set up that way which it is | |
5662 | here). The same bytes will be seen again in a | |
5663 | later read(2), without the CRs. */ | |
177c0ea7 | 5664 | |
0daad115 GM |
5665 | if (errno == EAGAIN) |
5666 | { | |
5667 | int flags = FWRITE; | |
60f0fb11 | 5668 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5669 | } |
3433b6bd | 5670 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5671 | |
7ea2b339 | 5672 | /* Put what we should have written in wait_queue. */ |
20ca2e94 | 5673 | write_queue_push (p, cur_object, cur_buf, cur_len, 1); |
d35af63c PE |
5674 | wait_reading_process_output (0, 20 * 1000 * 1000, |
5675 | 0, 0, Qnil, NULL, 0); | |
7ea2b339 | 5676 | /* Reread queue, to see what is left. */ |
20ca2e94 | 5677 | break; |
0daad115 GM |
5678 | } |
5679 | else | |
5680 | /* This is a real error. */ | |
5681 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5682 | } | |
20ca2e94 TN |
5683 | cur_buf += written; |
5684 | cur_len -= written; | |
0daad115 | 5685 | } |
0daad115 | 5686 | } |
20ca2e94 | 5687 | while (!NILP (p->write_queue)); |
0daad115 | 5688 | } |
d0d6b7c5 JB |
5689 | else |
5690 | { | |
0ff69270 | 5691 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5692 | proc = process_sent_to; |
6b61353c | 5693 | p = XPROCESS (proc); |
6bfd98e7 | 5694 | p->raw_status_new = 0; |
6b61353c | 5695 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); |
60f0fb11 | 5696 | p->tick = ++process_tick; |
d0d6b7c5 | 5697 | deactivate_process (proc); |
6b61353c | 5698 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5699 | } |
5700 | } | |
5701 | ||
5702 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5703 | 3, 3, 0, |
5704 | doc: /* Send current contents of region as input to PROCESS. | |
5705 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5706 | nil, indicating the current buffer's process. | |
5707 | Called from program, takes three arguments, PROCESS, START and END. | |
5708 | If the region is more than 500 characters long, | |
5709 | it is sent in several bunches. This may happen even for shorter regions. | |
5710 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5711 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5712 | { |
5713 | Lisp_Object proc; | |
d311d28c | 5714 | ptrdiff_t start1, end1; |
d0d6b7c5 JB |
5715 | |
5716 | proc = get_process (process); | |
5717 | validate_region (&start, &end); | |
1b234f64 KH |
5718 | |
5719 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5720 | move_gap (XINT (start)); | |
5721 | ||
5722 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5723 | end1 = CHAR_TO_BYTE (XINT (end)); | |
400a67ff | 5724 | send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1, |
1b234f64 KH |
5725 | Fcurrent_buffer ()); |
5726 | ||
d0d6b7c5 JB |
5727 | return Qnil; |
5728 | } | |
5729 | ||
5730 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5731 | 2, 2, 0, |
5732 | doc: /* Send PROCESS the contents of STRING as input. | |
5733 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5734 | nil, indicating the current buffer's process. | |
5735 | If STRING is more than 500 characters long, | |
5736 | it is sent in several bunches. This may happen even for shorter strings. | |
5737 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5738 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5739 | { |
5740 | Lisp_Object proc; | |
b7826503 | 5741 | CHECK_STRING (string); |
d0d6b7c5 | 5742 | proc = get_process (process); |
400a67ff | 5743 | send_process (proc, SSDATA (string), |
1b234f64 | 5744 | SBYTES (string), string); |
d0d6b7c5 JB |
5745 | return Qnil; |
5746 | } | |
5747 | \f | |
16782258 JD |
5748 | /* Return the foreground process group for the tty/pty that |
5749 | the process P uses. */ | |
dde14581 | 5750 | static pid_t |
d3da34e0 | 5751 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 | 5752 | { |
dde14581 | 5753 | pid_t gid = -1; |
16782258 | 5754 | |
f3d9532b | 5755 | #ifdef TIOCGPGRP |
60f0fb11 | 5756 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5757 | { |
5758 | int fd; | |
5759 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5760 | master side. Try the slave side. */ | |
42a5b22f | 5761 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5762 | |
5763 | if (fd != -1) | |
5764 | { | |
5765 | ioctl (fd, TIOCGPGRP, &gid); | |
5766 | emacs_close (fd); | |
5767 | } | |
5768 | } | |
5769 | #endif /* defined (TIOCGPGRP ) */ | |
5770 | ||
5771 | return gid; | |
5772 | } | |
5773 | ||
b81ea5ef RS |
5774 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5775 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5776 | doc: /* Return t if PROCESS has given the terminal to a child. |
5777 | If the operating system does not make it possible to find out, | |
5778 | return t unconditionally. */) | |
5842a27b | 5779 | (Lisp_Object process) |
b81ea5ef RS |
5780 | { |
5781 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5782 | in a way that will cause returning t. */ | |
dde14581 | 5783 | pid_t gid; |
b81ea5ef RS |
5784 | Lisp_Object proc; |
5785 | struct Lisp_Process *p; | |
5786 | ||
5787 | proc = get_process (process); | |
5788 | p = XPROCESS (proc); | |
5789 | ||
d888760c | 5790 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5791 | error ("Process %s is not a subprocess", |
d5db4077 | 5792 | SDATA (p->name)); |
60f0fb11 | 5793 | if (p->infd < 0) |
b81ea5ef | 5794 | error ("Process %s is not active", |
d5db4077 | 5795 | SDATA (p->name)); |
b81ea5ef | 5796 | |
16782258 | 5797 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5798 | |
6bfd98e7 | 5799 | if (gid == p->pid) |
b81ea5ef RS |
5800 | return Qnil; |
5801 | return Qt; | |
5802 | } | |
5803 | \f | |
d0d6b7c5 | 5804 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5805 | If CURRENT_GROUP is t, that means send to the process group |
5806 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5807 | This is used for various commands in shell mode. |
b81ea5ef RS |
5808 | If CURRENT_GROUP is lambda, that means send to the process group |
5809 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5810 | ||
d0d6b7c5 | 5811 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5812 | right away. |
5813 | ||
5814 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5815 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5816 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5817 | |
f9738840 | 5818 | static void |
d3da34e0 JB |
5819 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5820 | int nomsg) | |
d0d6b7c5 JB |
5821 | { |
5822 | Lisp_Object proc; | |
5823 | register struct Lisp_Process *p; | |
dde14581 | 5824 | pid_t gid; |
d0d6b7c5 JB |
5825 | int no_pgrp = 0; |
5826 | ||
5827 | proc = get_process (process); | |
5828 | p = XPROCESS (proc); | |
5829 | ||
d888760c | 5830 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5831 | error ("Process %s is not a subprocess", |
d5db4077 | 5832 | SDATA (p->name)); |
60f0fb11 | 5833 | if (p->infd < 0) |
d0d6b7c5 | 5834 | error ("Process %s is not active", |
d5db4077 | 5835 | SDATA (p->name)); |
d0d6b7c5 | 5836 | |
60f0fb11 | 5837 | if (!p->pty_flag) |
d0d6b7c5 JB |
5838 | current_group = Qnil; |
5839 | ||
d0d6b7c5 | 5840 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5841 | if (NILP (current_group)) |
5842 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5843 | gid = p->pid; |
2af70a0c | 5844 | else |
d0d6b7c5 | 5845 | { |
b0310da4 | 5846 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5847 | /* If possible, send signals to the entire pgrp |
5848 | by sending an input character to it. */ | |
b0310da4 | 5849 | |
6be429b1 | 5850 | struct termios t; |
7f916a36 RS |
5851 | cc_t *sig_char = NULL; |
5852 | ||
60f0fb11 | 5853 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5854 | |
5855 | switch (signo) | |
5856 | { | |
5857 | case SIGINT: | |
7f916a36 RS |
5858 | sig_char = &t.c_cc[VINTR]; |
5859 | break; | |
6be429b1 JB |
5860 | |
5861 | case SIGQUIT: | |
7f916a36 RS |
5862 | sig_char = &t.c_cc[VQUIT]; |
5863 | break; | |
6be429b1 JB |
5864 | |
5865 | case SIGTSTP: | |
d0adf46f | 5866 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5867 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5868 | #else |
7f916a36 | 5869 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5870 | #endif |
7f916a36 | 5871 | break; |
6be429b1 JB |
5872 | } |
5873 | ||
ca4313d5 | 5874 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc | 5875 | { |
f990b4e5 | 5876 | send_process (proc, (char *) sig_char, 1, Qnil); |
f1c206fc RS |
5877 | return; |
5878 | } | |
5879 | /* If we can't send the signal with a character, | |
5880 | fall through and send it another way. */ | |
f1c206fc RS |
5881 | |
5882 | /* The code above may fall through if it can't | |
5883 | handle the signal. */ | |
20505336 | 5884 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5885 | |
177c0ea7 | 5886 | #ifdef TIOCGPGRP |
2af70a0c | 5887 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5888 | Otherwise, use the pty to get the pgrp. |
5889 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5890 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5891 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5892 | His patch indicates that if TIOCGPGRP returns an error, then |
5893 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5894 | |
16782258 | 5895 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5896 | |
16782258 JD |
5897 | if (gid == -1) |
5898 | /* If we can't get the information, assume | |
5899 | the shell owns the tty. */ | |
6bfd98e7 | 5900 | gid = p->pid; |
2af70a0c RS |
5901 | |
5902 | /* It is not clear whether anything really can set GID to -1. | |
5903 | Perhaps on some system one of those ioctls can or could do so. | |
5904 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5905 | if (gid == -1) |
5906 | no_pgrp = 1; | |
b0310da4 | 5907 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5908 | /* Can't select pgrps on this system, so we know that |
5909 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5910 | gid = p->pid; |
301c3fe4 | 5911 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5912 | |
5913 | /* If current_group is lambda, and the shell owns the terminal, | |
5914 | don't send any signal. */ | |
6bfd98e7 | 5915 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5916 | return; |
d0d6b7c5 | 5917 | } |
d0d6b7c5 JB |
5918 | |
5919 | switch (signo) | |
5920 | { | |
5921 | #ifdef SIGCONT | |
5922 | case SIGCONT: | |
6bfd98e7 | 5923 | p->raw_status_new = 0; |
d0d6b7c5 | 5924 | p->status = Qrun; |
60f0fb11 | 5925 | p->tick = ++process_tick; |
d0d6b7c5 | 5926 | if (!nomsg) |
e42bdf01 CY |
5927 | { |
5928 | status_notify (NULL); | |
5929 | redisplay_preserve_echo_area (13); | |
5930 | } | |
d0d6b7c5 | 5931 | break; |
301c3fe4 | 5932 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 5933 | case SIGINT: |
d0d6b7c5 | 5934 | case SIGQUIT: |
d0d6b7c5 | 5935 | case SIGKILL: |
60f0fb11 | 5936 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5937 | break; |
5938 | } | |
5939 | ||
5940 | /* If we don't have process groups, send the signal to the immediate | |
5941 | subprocess. That isn't really right, but it's better than any | |
5942 | obvious alternative. */ | |
5943 | if (no_pgrp) | |
5944 | { | |
6bfd98e7 | 5945 | kill (p->pid, signo); |
d0d6b7c5 JB |
5946 | return; |
5947 | } | |
5948 | ||
5949 | /* gid may be a pid, or minus a pgrp's number */ | |
5950 | #ifdef TIOCSIGSEND | |
5951 | if (!NILP (current_group)) | |
16782258 | 5952 | { |
60f0fb11 | 5953 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
5954 | EMACS_KILLPG (gid, signo); |
5955 | } | |
d0d6b7c5 JB |
5956 | else |
5957 | { | |
6bfd98e7 | 5958 | gid = - p->pid; |
d0d6b7c5 JB |
5959 | kill (gid, signo); |
5960 | } | |
301c3fe4 | 5961 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5962 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5963 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5964 | } |
5965 | ||
5966 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5967 | doc: /* Interrupt process PROCESS. |
5968 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5969 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5970 | Second arg CURRENT-GROUP non-nil means send signal to |
5971 | the current process-group of the process's controlling terminal | |
5972 | rather than to the process's own process group. | |
5973 | If the process is a shell, this means interrupt current subjob | |
5974 | rather than the shell. | |
5975 | ||
5976 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5977 | don't send the signal. */) | |
5842a27b | 5978 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5979 | { |
5980 | process_send_signal (process, SIGINT, current_group, 0); | |
5981 | return process; | |
5982 | } | |
5983 | ||
5984 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5985 | doc: /* Kill process PROCESS. May be process or name of one. |
5986 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5987 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5988 | { |
5989 | process_send_signal (process, SIGKILL, current_group, 0); | |
5990 | return process; | |
5991 | } | |
5992 | ||
5993 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5994 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5995 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5996 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5997 | { |
5998 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5999 | return process; | |
6000 | } | |
6001 | ||
6002 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6003 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6004 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6005 | If PROCESS is a network or serial process, inhibit handling of incoming |
6006 | traffic. */) | |
5842a27b | 6007 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6008 | { |
d888760c | 6009 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6010 | { |
6011 | struct Lisp_Process *p; | |
177c0ea7 | 6012 | |
e690ca94 KS |
6013 | p = XPROCESS (process); |
6014 | if (NILP (p->command) | |
60f0fb11 | 6015 | && p->infd >= 0) |
e690ca94 | 6016 | { |
60f0fb11 SM |
6017 | FD_CLR (p->infd, &input_wait_mask); |
6018 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
6019 | } |
6020 | p->command = Qt; | |
6021 | return process; | |
6022 | } | |
d0d6b7c5 | 6023 | #ifndef SIGTSTP |
a9a73d6c | 6024 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6025 | #else |
6026 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6027 | #endif | |
6028 | return process; | |
6029 | } | |
6030 | ||
6031 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6032 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6033 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6034 | If PROCESS is a network or serial process, resume handling of incoming |
6035 | traffic. */) | |
5842a27b | 6036 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6037 | { |
d888760c | 6038 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6039 | { |
6040 | struct Lisp_Process *p; | |
6041 | ||
6042 | p = XPROCESS (process); | |
6043 | if (EQ (p->command, Qt) | |
60f0fb11 | 6044 | && p->infd >= 0 |
e690ca94 KS |
6045 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
6046 | { | |
60f0fb11 SM |
6047 | FD_SET (p->infd, &input_wait_mask); |
6048 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6049 | #ifdef WINDOWSNT |
6050 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6051 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 6052 | #else /* not WINDOWSNT */ |
d888760c | 6053 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 6054 | #endif /* not WINDOWSNT */ |
e690ca94 KS |
6055 | } |
6056 | p->command = Qnil; | |
6057 | return process; | |
6058 | } | |
d0d6b7c5 JB |
6059 | #ifdef SIGCONT |
6060 | process_send_signal (process, SIGCONT, current_group, 0); | |
6061 | #else | |
a9a73d6c | 6062 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6063 | #endif |
6064 | return process; | |
6065 | } | |
6066 | ||
6067 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6068 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6069 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6070 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6071 | process to signal; in this case, the process need not be a child of |
6072 | this Emacs. | |
fdb82f93 | 6073 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6074 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6075 | { |
6bfd98e7 | 6076 | pid_t pid; |
cdd5ea86 | 6077 | |
cdd5ea86 KS |
6078 | if (STRINGP (process)) |
6079 | { | |
d311d28c PE |
6080 | Lisp_Object tem = Fget_process (process); |
6081 | if (NILP (tem)) | |
cdd5ea86 | 6082 | { |
d44287d4 PE |
6083 | Lisp_Object process_number = |
6084 | string_to_number (SSDATA (process), 10, 1); | |
6085 | if (INTEGERP (process_number) || FLOATP (process_number)) | |
6086 | tem = process_number; | |
cdd5ea86 KS |
6087 | } |
6088 | process = tem; | |
6089 | } | |
d44287d4 | 6090 | else if (!NUMBERP (process)) |
cdd5ea86 | 6091 | process = get_process (process); |
177c0ea7 | 6092 | |
cdd5ea86 KS |
6093 | if (NILP (process)) |
6094 | return process; | |
6095 | ||
d83cf4cc PE |
6096 | if (NUMBERP (process)) |
6097 | CONS_TO_INTEGER (process, pid_t, pid); | |
d44287d4 PE |
6098 | else |
6099 | { | |
6100 | CHECK_PROCESS (process); | |
6101 | pid = XPROCESS (process)->pid; | |
6102 | if (pid <= 0) | |
6103 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); | |
6104 | } | |
4766242d | 6105 | |
59324b1d | 6106 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6107 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6108 | XSETINT (sigcode, VALUE) |
6109 | ||
6110 | if (INTEGERP (sigcode)) | |
d311d28c | 6111 | CHECK_TYPE_RANGED_INTEGER (int, sigcode); |
4766242d RS |
6112 | else |
6113 | { | |
25a48bd0 | 6114 | char *name; |
4766242d | 6115 | |
b7826503 | 6116 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6117 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6118 | |
ed3751c8 | 6119 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6120 | name += 3; |
6121 | ||
4766242d RS |
6122 | if (0) |
6123 | ; | |
59324b1d KS |
6124 | #ifdef SIGUSR1 |
6125 | parse_signal ("usr1", SIGUSR1); | |
6126 | #endif | |
6127 | #ifdef SIGUSR2 | |
6128 | parse_signal ("usr2", SIGUSR2); | |
6129 | #endif | |
6130 | #ifdef SIGTERM | |
6131 | parse_signal ("term", SIGTERM); | |
6132 | #endif | |
4766242d | 6133 | #ifdef SIGHUP |
59324b1d | 6134 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6135 | #endif |
6136 | #ifdef SIGINT | |
59324b1d | 6137 | parse_signal ("int", SIGINT); |
4766242d RS |
6138 | #endif |
6139 | #ifdef SIGQUIT | |
59324b1d | 6140 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6141 | #endif |
6142 | #ifdef SIGILL | |
59324b1d | 6143 | parse_signal ("ill", SIGILL); |
4766242d RS |
6144 | #endif |
6145 | #ifdef SIGABRT | |
59324b1d | 6146 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6147 | #endif |
6148 | #ifdef SIGEMT | |
59324b1d | 6149 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6150 | #endif |
6151 | #ifdef SIGKILL | |
59324b1d | 6152 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6153 | #endif |
6154 | #ifdef SIGFPE | |
59324b1d | 6155 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6156 | #endif |
6157 | #ifdef SIGBUS | |
59324b1d | 6158 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6159 | #endif |
6160 | #ifdef SIGSEGV | |
59324b1d | 6161 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6162 | #endif |
6163 | #ifdef SIGSYS | |
59324b1d | 6164 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6165 | #endif |
6166 | #ifdef SIGPIPE | |
59324b1d | 6167 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6168 | #endif |
6169 | #ifdef SIGALRM | |
59324b1d | 6170 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6171 | #endif |
6172 | #ifdef SIGURG | |
59324b1d | 6173 | parse_signal ("urg", SIGURG); |
4766242d RS |
6174 | #endif |
6175 | #ifdef SIGSTOP | |
59324b1d | 6176 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6177 | #endif |
6178 | #ifdef SIGTSTP | |
59324b1d | 6179 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6180 | #endif |
6181 | #ifdef SIGCONT | |
59324b1d | 6182 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6183 | #endif |
6184 | #ifdef SIGCHLD | |
59324b1d | 6185 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6186 | #endif |
6187 | #ifdef SIGTTIN | |
59324b1d | 6188 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6189 | #endif |
6190 | #ifdef SIGTTOU | |
59324b1d | 6191 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6192 | #endif |
6193 | #ifdef SIGIO | |
59324b1d | 6194 | parse_signal ("io", SIGIO); |
4766242d RS |
6195 | #endif |
6196 | #ifdef SIGXCPU | |
59324b1d | 6197 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6198 | #endif |
6199 | #ifdef SIGXFSZ | |
59324b1d | 6200 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6201 | #endif |
6202 | #ifdef SIGVTALRM | |
59324b1d | 6203 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6204 | #endif |
6205 | #ifdef SIGPROF | |
59324b1d | 6206 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6207 | #endif |
6208 | #ifdef SIGWINCH | |
59324b1d | 6209 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6210 | #endif |
6211 | #ifdef SIGINFO | |
59324b1d | 6212 | parse_signal ("info", SIGINFO); |
4766242d RS |
6213 | #endif |
6214 | else | |
9fa195a2 | 6215 | error ("Undefined signal name %s", name); |
4766242d RS |
6216 | } |
6217 | ||
59324b1d | 6218 | #undef parse_signal |
4766242d | 6219 | |
6bfd98e7 | 6220 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6221 | } |
6222 | ||
6223 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6224 | doc: /* Make PROCESS see end-of-file in its input. |
6225 | EOF comes after any text already sent to it. | |
6226 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6227 | nil, indicating the current buffer's process. | |
6228 | If PROCESS is a network connection, or is a process communicating | |
6229 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6230 | text to PROCESS after you call this function. |
6231 | If PROCESS is a serial process, wait until all output written to the | |
6232 | process has been transmitted to the serial port. */) | |
5842a27b | 6233 | (Lisp_Object process) |
d0d6b7c5 JB |
6234 | { |
6235 | Lisp_Object proc; | |
de7fbd09 | 6236 | struct coding_system *coding; |
d0d6b7c5 | 6237 | |
e690ca94 KS |
6238 | if (DATAGRAM_CONN_P (process)) |
6239 | return process; | |
6240 | ||
d0d6b7c5 | 6241 | proc = get_process (process); |
60f0fb11 | 6242 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6243 | |
6244 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6245 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 RS |
6246 | update_status (XPROCESS (proc)); |
6247 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6248 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6249 | |
de7fbd09 KH |
6250 | if (CODING_REQUIRE_FLUSHING (coding)) |
6251 | { | |
6252 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6253 | send_process (proc, "", 0, Qnil); | |
6254 | } | |
6255 | ||
60f0fb11 | 6256 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6257 | send_process (proc, "\004", 1, Qnil); |
a879ee6f | 6258 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6259 | { |
a7ebc409 | 6260 | #ifndef WINDOWSNT |
d888760c GM |
6261 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6262 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6263 | #endif /* not WINDOWSNT */ |
d888760c GM |
6264 | /* Do nothing on Windows because writes are blocking. */ |
6265 | } | |
d0d6b7c5 JB |
6266 | else |
6267 | { | |
4525f571 RS |
6268 | int old_outfd, new_outfd; |
6269 | ||
93853f3d | 6270 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6271 | /* If this is a network connection, or socketpair is used |
6272 | for communication with the subprocess, call shutdown to cause EOF. | |
6273 | (In some old system, shutdown to socketpair doesn't work. | |
6274 | Then we just can't win.) */ | |
a879ee6f | 6275 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6276 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6277 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6278 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6279 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6280 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6281 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6282 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6283 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6284 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6285 | if (new_outfd < 0) |
6286 | abort (); | |
60f0fb11 | 6287 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6288 | |
6289 | if (!proc_encode_coding_system[new_outfd]) | |
6290 | proc_encode_coding_system[new_outfd] | |
23f86fce | 6291 | = xmalloc (sizeof (struct coding_system)); |
72af86bd AS |
6292 | memcpy (proc_encode_coding_system[new_outfd], |
6293 | proc_encode_coding_system[old_outfd], | |
6294 | sizeof (struct coding_system)); | |
6295 | memset (proc_encode_coding_system[old_outfd], 0, | |
6296 | sizeof (struct coding_system)); | |
4525f571 | 6297 | |
60f0fb11 | 6298 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6299 | } |
d0d6b7c5 JB |
6300 | return process; |
6301 | } | |
d0d6b7c5 | 6302 | \f |
3fed8ad5 GM |
6303 | /* On receipt of a signal that a child status has changed, loop asking |
6304 | about children with changed statuses until the system says there | |
6305 | are no more. | |
177c0ea7 | 6306 | |
3fed8ad5 GM |
6307 | All we do is change the status; we do not run sentinels or print |
6308 | notifications. That is saved for the next time keyboard input is | |
6309 | done, in order to avoid timing errors. | |
6310 | ||
6311 | ** WARNING: this can be called during garbage collection. | |
6312 | Therefore, it must not be fooled by the presence of mark bits in | |
6313 | Lisp objects. | |
6314 | ||
6315 | ** USG WARNING: Although it is not obvious from the documentation | |
6316 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6317 | signal() before executing at least one wait(), otherwise the | |
6318 | handler will be called again, resulting in an infinite loop. The | |
6319 | relevant portion of the documentation reads "SIGCLD signals will be | |
6320 | queued and the signal-catching function will be continually | |
6321 | reentered until the queue is empty". Invoking signal() causes the | |
6322 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6323 | Inc. |
6324 | ||
6325 | ** Malloc WARNING: This should never call malloc either directly or | |
6326 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6327 | |
a5cfdda8 | 6328 | #ifdef SIGCHLD |
9af30bdf | 6329 | static void |
d3da34e0 | 6330 | sigchld_handler (int signo) |
d0d6b7c5 JB |
6331 | { |
6332 | int old_errno = errno; | |
6333 | Lisp_Object proc; | |
97ec208f | 6334 | struct Lisp_Process *p; |
d0d6b7c5 | 6335 | |
333f1b6f JD |
6336 | SIGNAL_THREAD_CHECK (signo); |
6337 | ||
d0d6b7c5 JB |
6338 | while (1) |
6339 | { | |
8e050977 | 6340 | pid_t pid; |
bba104c1 | 6341 | int w; |
d0d6b7c5 JB |
6342 | Lisp_Object tail; |
6343 | ||
6344 | #ifdef WNOHANG | |
6345 | #ifndef WUNTRACED | |
6346 | #define WUNTRACED 0 | |
6347 | #endif /* no WUNTRACED */ | |
6348 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 | 6349 | do |
63136da6 | 6350 | { |
29ed4d51 CY |
6351 | errno = 0; |
6352 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
29ed4d51 | 6353 | } |
e7d4a904 | 6354 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6355 | |
6356 | if (pid <= 0) | |
6357 | { | |
3fed8ad5 GM |
6358 | /* PID == 0 means no processes found, PID == -1 means a real |
6359 | failure. We have done all our job, so return. */ | |
d0d6b7c5 | 6360 | |
d0d6b7c5 JB |
6361 | errno = old_errno; |
6362 | return; | |
6363 | } | |
6364 | #else | |
6365 | pid = wait (&w); | |
6366 | #endif /* no WNOHANG */ | |
6367 | ||
6368 | /* Find the process that signaled us, and record its status. */ | |
6369 | ||
a5cfdda8 | 6370 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6371 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6372 | { |
8e050977 | 6373 | Lisp_Object xpid = XCAR (tail); |
d311d28c PE |
6374 | if ((INTEGERP (xpid) && pid == XINT (xpid)) |
6375 | || (FLOATP (xpid) && pid == XFLOAT_DATA (xpid))) | |
8e050977 CY |
6376 | { |
6377 | XSETCAR (tail, Qnil); | |
6378 | goto sigchld_end_of_loop; | |
6379 | } | |
a5cfdda8 KS |
6380 | } |
6381 | ||
6382 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6383 | p = 0; |
8e50cc2d | 6384 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6385 | { |
70949dac | 6386 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6387 | p = XPROCESS (proc); |
d888760c | 6388 | if (EQ (p->type, Qreal) && p->pid == pid) |
d0d6b7c5 JB |
6389 | break; |
6390 | p = 0; | |
6391 | } | |
6392 | ||
6393 | /* Look for an asynchronous process whose pid hasn't been filled | |
6394 | in yet. */ | |
6395 | if (p == 0) | |
8e50cc2d | 6396 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6397 | { |
70949dac | 6398 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6399 | p = XPROCESS (proc); |
6bfd98e7 | 6400 | if (p->pid == -1) |
d0d6b7c5 JB |
6401 | break; |
6402 | p = 0; | |
6403 | } | |
177c0ea7 | 6404 | |
d0d6b7c5 JB |
6405 | /* Change the status of the process that was found. */ |
6406 | if (p != 0) | |
6407 | { | |
e98d950b | 6408 | int clear_desc_flag = 0; |
177c0ea7 | 6409 | |
60f0fb11 | 6410 | p->tick = ++process_tick; |
bba104c1 | 6411 | p->raw_status = w; |
6bfd98e7 | 6412 | p->raw_status_new = 1; |
177c0ea7 | 6413 | |
d0d6b7c5 | 6414 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6415 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6416 | && p->infd >= 0) |
e98d950b RS |
6417 | clear_desc_flag = 1; |
6418 | ||
6419 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6420 | if (clear_desc_flag) | |
6421 | { | |
60f0fb11 SM |
6422 | FD_CLR (p->infd, &input_wait_mask); |
6423 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6424 | } |
6be429b1 | 6425 | |
214d6069 | 6426 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6427 | look around. */ |
6428 | if (input_available_clear_time) | |
6429 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6430 | } |
6431 | ||
a5cfdda8 KS |
6432 | /* There was no asynchronous process found for that pid: we have |
6433 | a synchronous process. */ | |
d0d6b7c5 JB |
6434 | else |
6435 | { | |
6436 | synch_process_alive = 0; | |
6437 | ||
6438 | /* Report the status of the synchronous process. */ | |
6439 | if (WIFEXITED (w)) | |
6440 | synch_process_retcode = WRETCODE (w); | |
6441 | else if (WIFSIGNALED (w)) | |
63136da6 | 6442 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6443 | |
214d6069 | 6444 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6445 | look around. */ |
6446 | if (input_available_clear_time) | |
6447 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6448 | } |
6449 | ||
a5cfdda8 KS |
6450 | sigchld_end_of_loop: |
6451 | ; | |
6452 | ||
d0d6b7c5 JB |
6453 | /* On some systems, we must return right away. |
6454 | If any more processes want to signal us, we will | |
6455 | get another signal. | |
6456 | Otherwise (on systems that have WNOHANG), loop around | |
6457 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6458 | #if (defined WINDOWSNT \ |
8a2a6032 | 6459 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6460 | && !(defined HPUX && defined WNOHANG))) |
d0d6b7c5 JB |
6461 | errno = old_errno; |
6462 | return; | |
6463 | #endif /* USG, but not HPUX with WNOHANG */ | |
6464 | } | |
6465 | } | |
a5cfdda8 | 6466 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6467 | \f |
6468 | ||
6469 | static Lisp_Object | |
d3da34e0 | 6470 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6471 | { |
70949dac | 6472 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6473 | return Qnil; |
6474 | } | |
6475 | ||
3b9a3dfa | 6476 | static Lisp_Object |
b93aacde | 6477 | exec_sentinel_error_handler (Lisp_Object error_val) |
3b9a3dfa | 6478 | { |
b93aacde | 6479 | cmd_error_internal (error_val, "error in process sentinel: "); |
3b9a3dfa RS |
6480 | Vinhibit_quit = Qt; |
6481 | update_echo_area (); | |
833ba342 | 6482 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6483 | return Qt; |
3b9a3dfa RS |
6484 | } |
6485 | ||
d0d6b7c5 | 6486 | static void |
d3da34e0 | 6487 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6488 | { |
aba7731a | 6489 | Lisp_Object sentinel, odeactivate; |
d0d6b7c5 | 6490 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 6491 | ptrdiff_t count = SPECPDL_INDEX (); |
4da2f5be | 6492 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6493 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6494 | |
84af9896 RS |
6495 | if (inhibit_sentinels) |
6496 | return; | |
6497 | ||
dfc21838 RS |
6498 | /* No need to gcpro these, because all we do with them later |
6499 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6500 | odeactivate = Vdeactivate_mark; |
aba7731a PE |
6501 | #if 0 |
6502 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 6503 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6504 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 6505 | #endif |
dfc21838 | 6506 | |
97e53006 SM |
6507 | /* There's no good reason to let sentinels change the current |
6508 | buffer, and many callers of accept-process-output, sit-for, and | |
6509 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 6510 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
97e53006 | 6511 | |
d0d6b7c5 JB |
6512 | sentinel = p->sentinel; |
6513 | if (NILP (sentinel)) | |
6514 | return; | |
6515 | ||
6516 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6517 | assure that it gets restored no matter how the sentinel exits. */ | |
6518 | p->sentinel = Qnil; | |
6519 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6520 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6521 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6522 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6523 | |
4da2f5be RS |
6524 | /* In case we get recursively called, |
6525 | and we already saved the match data nonrecursively, | |
6526 | save the same match data in safely recursive fashion. */ | |
6527 | if (outer_running_asynch_code) | |
6528 | { | |
6529 | Lisp_Object tem; | |
89f2614d KS |
6530 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6531 | restore_search_regs (); | |
6532 | record_unwind_save_match_data (); | |
6533 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6534 | } |
6535 | ||
6536 | /* For speed, if a search happens within this code, | |
6537 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6538 | running_asynch_code = 1; |
4da2f5be | 6539 | |
3b9a3dfa RS |
6540 | internal_condition_case_1 (read_process_output_call, |
6541 | Fcons (sentinel, | |
6542 | Fcons (proc, Fcons (reason, Qnil))), | |
6543 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6544 | exec_sentinel_error_handler); | |
4da2f5be RS |
6545 | |
6546 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6547 | restore_search_regs (); |
4da2f5be | 6548 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6549 | |
6550 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6551 | |
6552 | /* Restore waiting_for_user_input_p as it was | |
6553 | when we were called, in case the filter clobbered it. */ | |
6554 | waiting_for_user_input_p = waiting; | |
6555 | ||
7973cfa8 | 6556 | #if 0 |
dfc21838 RS |
6557 | if (! EQ (Fcurrent_buffer (), obuffer) |
6558 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6559 | #endif |
927e08be RS |
6560 | /* But do it only if the caller is actually going to read events. |
6561 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6562 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6563 | if (waiting_for_user_input_p == -1) |
6564 | record_asynch_buffer_change (); | |
8fb3cf64 | 6565 | |
2ea6d561 | 6566 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6567 | } |
6568 | ||
6569 | /* Report all recent events of a change in process status | |
6570 | (either run the sentinel or output a message). | |
b50fe468 RS |
6571 | This is usually done while Emacs is waiting for keyboard input |
6572 | but can be done at other times. */ | |
d0d6b7c5 | 6573 | |
ff6daed3 | 6574 | static void |
d3da34e0 | 6575 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6576 | { |
6577 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6578 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6579 | struct gcpro gcpro1, gcpro2; |
6580 | ||
2e4149a8 KH |
6581 | tail = Qnil; |
6582 | msg = Qnil; | |
d0d6b7c5 JB |
6583 | /* We need to gcpro tail; if read_process_output calls a filter |
6584 | which deletes a process and removes the cons to which tail points | |
6585 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6586 | reference. */ | |
6587 | GCPRO2 (tail, msg); | |
6588 | ||
30623085 RS |
6589 | /* Set this now, so that if new processes are created by sentinels |
6590 | that we run, we get called again to handle their status changes. */ | |
6591 | update_tick = process_tick; | |
6592 | ||
99784d63 | 6593 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6594 | { |
30623085 RS |
6595 | Lisp_Object symbol; |
6596 | register struct Lisp_Process *p; | |
6597 | ||
99784d63 | 6598 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6599 | p = XPROCESS (proc); |
6600 | ||
60f0fb11 | 6601 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6602 | { |
60f0fb11 | 6603 | p->update_tick = p->tick; |
d0d6b7c5 | 6604 | |
30623085 | 6605 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6606 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6607 | && ! EQ (p->status, Qconnect) |
e690ca94 | 6608 | && ! EQ (p->status, Qlisten) |
d888760c GM |
6609 | /* Network or serial process not stopped: */ |
6610 | && ! EQ (p->command, Qt) | |
60f0fb11 | 6611 | && p->infd >= 0 |
ff6daed3 | 6612 | && p != deleting_process |
60f0fb11 | 6613 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6614 | |
30623085 | 6615 | buffer = p->buffer; |
d0d6b7c5 | 6616 | |
30623085 | 6617 | /* Get the text to use for the message. */ |
6bfd98e7 | 6618 | if (p->raw_status_new) |
30623085 | 6619 | update_status (p); |
116c423c | 6620 | msg = status_message (p); |
d0d6b7c5 | 6621 | |
30623085 RS |
6622 | /* If process is terminated, deactivate it or delete it. */ |
6623 | symbol = p->status; | |
6624 | if (CONSP (p->status)) | |
70949dac | 6625 | symbol = XCAR (p->status); |
d0d6b7c5 | 6626 | |
30623085 RS |
6627 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6628 | || EQ (symbol, Qclosed)) | |
6629 | { | |
6630 | if (delete_exited_processes) | |
6631 | remove_process (proc); | |
6632 | else | |
6633 | deactivate_process (proc); | |
6634 | } | |
d0d6b7c5 | 6635 | |
0ad61fe7 RS |
6636 | /* The actions above may have further incremented p->tick. |
6637 | So set p->update_tick again | |
6638 | so that an error in the sentinel will not cause | |
6639 | this code to be run again. */ | |
60f0fb11 | 6640 | p->update_tick = p->tick; |
30623085 RS |
6641 | /* Now output the message suitably. */ |
6642 | if (!NILP (p->sentinel)) | |
6643 | exec_sentinel (proc, msg); | |
6644 | /* Don't bother with a message in the buffer | |
6645 | when a process becomes runnable. */ | |
6646 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6647 | { | |
01f5787b | 6648 | Lisp_Object tem; |
30623085 | 6649 | struct buffer *old = current_buffer; |
d311d28c PE |
6650 | ptrdiff_t opoint, opoint_byte; |
6651 | ptrdiff_t before, before_byte; | |
2e4149a8 | 6652 | |
30623085 RS |
6653 | /* Avoid error if buffer is deleted |
6654 | (probably that's why the process is dead, too) */ | |
4b4deea2 | 6655 | if (NILP (BVAR (XBUFFER (buffer), name))) |
30623085 RS |
6656 | continue; |
6657 | Fset_buffer (buffer); | |
12ca5cdf | 6658 | |
6ec8bbd2 | 6659 | opoint = PT; |
d8a2934e | 6660 | opoint_byte = PT_BYTE; |
30623085 RS |
6661 | /* Insert new output into buffer |
6662 | at the current end-of-output marker, | |
6663 | thus preserving logical ordering of input and output. */ | |
6664 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6665 | Fgoto_char (p->mark); |
30623085 | 6666 | else |
d8a2934e | 6667 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6668 | |
6669 | before = PT; | |
d8a2934e | 6670 | before_byte = PT_BYTE; |
30623085 | 6671 | |
4b4deea2 TT |
6672 | tem = BVAR (current_buffer, read_only); |
6673 | BVAR (current_buffer, read_only) = Qnil; | |
30623085 RS |
6674 | insert_string ("\nProcess "); |
6675 | Finsert (1, &p->name); | |
6676 | insert_string (" "); | |
6677 | Finsert (1, &msg); | |
4b4deea2 | 6678 | BVAR (current_buffer, read_only) = tem; |
d8a2934e | 6679 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6680 | |
12ca5cdf | 6681 | if (opoint >= before) |
d8a2934e RS |
6682 | SET_PT_BOTH (opoint + (PT - before), |
6683 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6684 | else |
d8a2934e | 6685 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6686 | |
30623085 | 6687 | set_buffer_internal (old); |
d0d6b7c5 | 6688 | } |
30623085 RS |
6689 | } |
6690 | } /* end for */ | |
d0d6b7c5 JB |
6691 | |
6692 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6693 | UNGCPRO; |
6694 | } | |
0fa1789e KH |
6695 | |
6696 | \f | |
6697 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6698 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6699 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6700 | DECODING will be used to decode subprocess output and ENCODING to | |
6701 | encode subprocess input. */) | |
5842a27b | 6702 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6703 | { |
6704 | register struct Lisp_Process *p; | |
6705 | ||
f3d9532b JB |
6706 | CHECK_PROCESS (process); |
6707 | p = XPROCESS (process); | |
60f0fb11 | 6708 | if (p->infd < 0) |
d5db4077 | 6709 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6710 | if (p->outfd < 0) |
d5db4077 | 6711 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6712 | Fcheck_coding_system (decoding); |
6713 | Fcheck_coding_system (encoding); | |
76d812bb | 6714 | encoding = coding_inherit_eol_type (encoding, Qnil); |
03f04413 KH |
6715 | p->decode_coding_system = decoding; |
6716 | p->encode_coding_system = encoding; | |
f3d9532b | 6717 | setup_process_coding_systems (process); |
0fa1789e KH |
6718 | |
6719 | return Qnil; | |
6720 | } | |
6721 | ||
6722 | DEFUN ("process-coding-system", | |
6723 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6724 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6725 | (register Lisp_Object process) |
0fa1789e | 6726 | { |
f3d9532b JB |
6727 | CHECK_PROCESS (process); |
6728 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6729 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6730 | } |
03f04413 KH |
6731 | |
6732 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6733 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6734 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6735 | If FLAG is non-nil, the filter is given multibyte strings. | |
6736 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6737 | all character code conversion except for end-of-line conversion is |
6738 | suppressed. */) | |
5842a27b | 6739 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6740 | { |
6741 | register struct Lisp_Process *p; | |
6742 | ||
f3d9532b JB |
6743 | CHECK_PROCESS (process); |
6744 | p = XPROCESS (process); | |
5431bd6a SM |
6745 | if (NILP (flag)) |
6746 | p->decode_coding_system = raw_text_coding_system (p->decode_coding_system); | |
f3d9532b | 6747 | setup_process_coding_systems (process); |
03f04413 KH |
6748 | |
6749 | return Qnil; | |
6750 | } | |
6751 | ||
6752 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6753 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6754 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6755 | (Lisp_Object process) |
03f04413 KH |
6756 | { |
6757 | register struct Lisp_Process *p; | |
5431bd6a | 6758 | struct coding_system *coding; |
03f04413 | 6759 | |
f3d9532b JB |
6760 | CHECK_PROCESS (process); |
6761 | p = XPROCESS (process); | |
5431bd6a SM |
6762 | coding = proc_decode_coding_system[p->infd]; |
6763 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6764 | } |
6765 | ||
6766 | ||
d0d6b7c5 | 6767 | \f |
cb768704 | 6768 | |
4475bec4 PE |
6769 | # ifdef HAVE_GPM |
6770 | ||
994d9841 | 6771 | void |
d3da34e0 | 6772 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6773 | { |
3fad2ad2 | 6774 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6775 | } |
6776 | ||
994d9841 | 6777 | void |
d3da34e0 | 6778 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6779 | { |
3fad2ad2 | 6780 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6781 | } |
6782 | ||
4475bec4 PE |
6783 | # endif |
6784 | ||
006c5daa PE |
6785 | # ifdef SIGIO |
6786 | ||
a69281ff RS |
6787 | /* Return nonzero if *MASK has a bit set |
6788 | that corresponds to one of the keyboard input descriptors. */ | |
6789 | ||
ff6daed3 | 6790 | static int |
d3da34e0 | 6791 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6792 | { |
6793 | int fd; | |
6794 | ||
3fad2ad2 | 6795 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6796 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6797 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6798 | return 1; | |
6799 | ||
6800 | return 0; | |
6801 | } | |
006c5daa | 6802 | # endif |
934e2a68 | 6803 | |
f388c88a | 6804 | #else /* not subprocesses */ |
934e2a68 | 6805 | |
f388c88a EZ |
6806 | /* Defined on msdos.c. */ |
6807 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
0d23c240 | 6808 | EMACS_TIME *, void *); |
934e2a68 | 6809 | |
f388c88a EZ |
6810 | /* Implementation of wait_reading_process_output, assuming that there |
6811 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6812 | |
f388c88a | 6813 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6814 | |
d188e26b | 6815 | TIME_LIMIT is: |
d35af63c PE |
6816 | timeout in seconds |
6817 | If negative, gobble data immediately available but don't wait for any. | |
6818 | ||
d188e26b | 6819 | NSECS is: |
d35af63c PE |
6820 | an additional duration to wait, measured in nanoseconds |
6821 | If TIME_LIMIT is zero, then: | |
d188e26b PE |
6822 | If NSECS == 0, there is no limit. |
6823 | If NSECS > 0, the timeout consists of NSECS only. | |
d35af63c | 6824 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
934e2a68 | 6825 | |
a0bee46f | 6826 | READ_KBD is: |
f388c88a EZ |
6827 | 0 to ignore keyboard input, or |
6828 | 1 to return when input is available, or | |
6829 | -1 means caller will actually read the input, so don't throw to | |
6830 | the quit handler. | |
934e2a68 | 6831 | |
f388c88a EZ |
6832 | see full version for other parameters. We know that wait_proc will |
6833 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6834 | |
d188e26b | 6835 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
f388c88a | 6836 | output that arrives. |
934e2a68 | 6837 | |
f388c88a EZ |
6838 | Return true if we received input from any process. */ |
6839 | ||
6840 | int | |
d35af63c | 6841 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
1408902e EZ |
6842 | int do_display, |
6843 | Lisp_Object wait_for_cell, | |
6844 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6845 | { |
f388c88a EZ |
6846 | register int nfds; |
6847 | EMACS_TIME end_time, timeout; | |
d0d6b7c5 | 6848 | |
d35af63c PE |
6849 | if (time_limit < 0) |
6850 | { | |
6851 | time_limit = 0; | |
6852 | nsecs = -1; | |
6853 | } | |
6854 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
6855 | time_limit = TYPE_MAXIMUM (time_t); | |
6856 | ||
f388c88a | 6857 | /* What does time_limit really mean? */ |
216ee680 | 6858 | if (time_limit || 0 < nsecs) |
f388c88a EZ |
6859 | { |
6860 | EMACS_GET_TIME (end_time); | |
d35af63c | 6861 | EMACS_SET_SECS_NSECS (timeout, time_limit, nsecs); |
f388c88a EZ |
6862 | EMACS_ADD_TIME (end_time, end_time, timeout); |
6863 | } | |
84af9896 | 6864 | |
f388c88a EZ |
6865 | /* Turn off periodic alarms (in case they are in use) |
6866 | and then turn off any other atimers, | |
6867 | because the select emulator uses alarms. */ | |
6868 | stop_polling (); | |
6869 | turn_on_atimers (0); | |
d0d6b7c5 | 6870 | |
f388c88a EZ |
6871 | while (1) |
6872 | { | |
6873 | int timeout_reduced_for_timers = 0; | |
a0bee46f PE |
6874 | SELECT_TYPE waitchannels; |
6875 | int xerrno; | |
dd2281ae | 6876 | |
f388c88a EZ |
6877 | /* If calling from keyboard input, do not quit |
6878 | since we want to return C-g as an input character. | |
6879 | Otherwise, do pending quit if requested. */ | |
6880 | if (read_kbd >= 0) | |
6881 | QUIT; | |
bad49fc7 | 6882 | |
f388c88a EZ |
6883 | /* Exit now if the cell we're waiting for became non-nil. */ |
6884 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6885 | break; | |
0a65b032 | 6886 | |
bae8d137 RS |
6887 | /* Compute time from now till when time limit is up */ |
6888 | /* Exit if already run out */ | |
d35af63c | 6889 | if (nsecs < 0) |
52fd88d3 | 6890 | { |
216ee680 | 6891 | /* A negative timeout means |
52fd88d3 EZ |
6892 | gobble output available now |
6893 | but don't wait at all. */ | |
6894 | ||
6895 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
6896 | } | |
216ee680 | 6897 | else if (time_limit || 0 < nsecs) |
6720a7fb | 6898 | { |
f694e5d2 | 6899 | EMACS_GET_TIME (timeout); |
d35af63c | 6900 | if (EMACS_TIME_LE (end_time, timeout)) |
6720a7fb | 6901 | break; |
d35af63c | 6902 | EMACS_SUB_TIME (timeout, end_time, timeout); |
6720a7fb | 6903 | } |
52fd88d3 EZ |
6904 | else |
6905 | { | |
6906 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
6907 | } | |
6720a7fb | 6908 | |
bae8d137 RS |
6909 | /* If our caller will not immediately handle keyboard events, |
6910 | run timer events directly. | |
6911 | (Callers that will immediately read keyboard events | |
6912 | call timer_delay on their own.) */ | |
f3fbd155 | 6913 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6914 | { |
6915 | EMACS_TIME timer_delay; | |
0a65b032 | 6916 | |
9baacf76 | 6917 | do |
0a65b032 | 6918 | { |
9baacf76 | 6919 | int old_timers_run = timers_run; |
f868cd8a | 6920 | timer_delay = timer_check (); |
9baacf76 GM |
6921 | if (timers_run != old_timers_run && do_display) |
6922 | /* We must retry, since a timer may have requeued itself | |
6923 | and that could alter the time delay. */ | |
3007ebfb | 6924 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6925 | else |
6926 | break; | |
0a65b032 | 6927 | } |
9baacf76 | 6928 | while (!detect_input_pending ()); |
0a65b032 | 6929 | |
52fd88d3 | 6930 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6931 | if (read_kbd != 0 |
52fd88d3 EZ |
6932 | && requeued_events_pending_p ()) |
6933 | break; | |
6934 | ||
d35af63c | 6935 | if (EMACS_TIME_VALID_P (timer_delay) && 0 <= nsecs) |
bae8d137 | 6936 | { |
d35af63c | 6937 | if (EMACS_TIME_LT (timer_delay, timeout)) |
bae8d137 | 6938 | { |
f694e5d2 | 6939 | timeout = timer_delay; |
bae8d137 RS |
6940 | timeout_reduced_for_timers = 1; |
6941 | } | |
6942 | } | |
6943 | } | |
6944 | ||
6720a7fb JB |
6945 | /* Cause C-g and alarm signals to take immediate action, |
6946 | and cause input available signals to zero out timeout. */ | |
b89a415a | 6947 | if (read_kbd < 0) |
6720a7fb JB |
6948 | set_waiting_for_input (&timeout); |
6949 | ||
ff11dfa1 | 6950 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6951 | reprocess its display stuff. */ |
5164ee8e | 6952 | if (frame_garbaged && do_display) |
0a65b032 RS |
6953 | { |
6954 | clear_waiting_for_input (); | |
3007ebfb | 6955 | redisplay_preserve_echo_area (15); |
b89a415a | 6956 | if (read_kbd < 0) |
0a65b032 RS |
6957 | set_waiting_for_input (&timeout); |
6958 | } | |
6720a7fb | 6959 | |
a0bee46f PE |
6960 | /* Wait till there is something to do. */ |
6961 | FD_ZERO (&waitchannels); | |
b89a415a | 6962 | if (read_kbd && detect_input_pending ()) |
a0bee46f PE |
6963 | nfds = 0; |
6964 | else | |
1861b214 | 6965 | { |
a0bee46f PE |
6966 | if (read_kbd || !NILP (wait_for_cell)) |
6967 | FD_SET (0, &waitchannels); | |
6968 | nfds = pselect (1, &waitchannels, NULL, NULL, &timeout, NULL); | |
1861b214 | 6969 | } |
f694e5d2 KH |
6970 | |
6971 | xerrno = errno; | |
6720a7fb JB |
6972 | |
6973 | /* Make C-g and alarm signals set flags again */ | |
6974 | clear_waiting_for_input (); | |
6975 | ||
6976 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 6977 | do_pending_window_change (0); |
6720a7fb | 6978 | |
d35af63c | 6979 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
f694e5d2 KH |
6980 | /* We waited the full specified time, so return now. */ |
6981 | break; | |
6982 | ||
6720a7fb JB |
6983 | if (nfds == -1) |
6984 | { | |
6985 | /* If the system call was interrupted, then go around the | |
6986 | loop again. */ | |
f694e5d2 | 6987 | if (xerrno == EINTR) |
8db121c4 | 6988 | FD_ZERO (&waitchannels); |
f694e5d2 | 6989 | else |
68c45bf0 | 6990 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 6991 | } |
6720a7fb | 6992 | |
f694e5d2 KH |
6993 | /* Check for keyboard input */ |
6994 | ||
b89a415a | 6995 | if (read_kbd |
78c1afb6 | 6996 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 6997 | { |
78c1afb6 | 6998 | swallow_events (do_display); |
f694e5d2 | 6999 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7000 | break; |
78c1afb6 EZ |
7001 | } |
7002 | ||
52fd88d3 | 7003 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7004 | if (read_kbd |
52fd88d3 EZ |
7005 | && requeued_events_pending_p ()) |
7006 | break; | |
7007 | ||
f854a00b RS |
7008 | /* If wait_for_cell. check for keyboard input |
7009 | but don't run any timers. | |
7010 | ??? (It seems wrong to me to check for keyboard | |
7011 | input at all when wait_for_cell, but the code | |
7012 | has been this way since July 1994. | |
7013 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7014 | if (! NILP (wait_for_cell) |
f854a00b RS |
7015 | && detect_input_pending ()) |
7016 | { | |
7017 | swallow_events (do_display); | |
7018 | if (detect_input_pending ()) | |
7019 | break; | |
7020 | } | |
7021 | ||
0a65b032 | 7022 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7023 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7024 | break; |
6720a7fb JB |
7025 | } |
7026 | ||
a87b802f JB |
7027 | start_polling (); |
7028 | ||
6720a7fb JB |
7029 | return 0; |
7030 | } | |
7031 | ||
f388c88a EZ |
7032 | #endif /* not subprocesses */ |
7033 | ||
7034 | /* The following functions are needed even if async subprocesses are | |
7035 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 7036 | |
01faa934 DN |
7037 | /* Add DESC to the set of keyboard input descriptors. */ |
7038 | ||
7039 | void | |
7040 | add_keyboard_wait_descriptor (int desc) | |
7041 | { | |
bf05eed6 | 7042 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
7043 | FD_SET (desc, &input_wait_mask); |
7044 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
7045 | if (desc > max_input_desc) |
7046 | max_input_desc = desc; | |
bf05eed6 | 7047 | #endif |
01faa934 DN |
7048 | } |
7049 | ||
7050 | /* From now on, do not expect DESC to give keyboard input. */ | |
7051 | ||
7052 | void | |
7053 | delete_keyboard_wait_descriptor (int desc) | |
7054 | { | |
bf05eed6 | 7055 | #ifdef subprocesses |
01faa934 | 7056 | int fd; |
3fad2ad2 | 7057 | int lim = max_input_desc; |
01faa934 DN |
7058 | |
7059 | FD_CLR (desc, &input_wait_mask); | |
7060 | FD_CLR (desc, &non_process_wait_mask); | |
7061 | ||
3fad2ad2 | 7062 | if (desc == max_input_desc) |
01faa934 | 7063 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
7064 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
7065 | max_input_desc = fd; | |
bf05eed6 | 7066 | #endif |
01faa934 DN |
7067 | } |
7068 | ||
fc549af9 EZ |
7069 | /* Setup coding systems of PROCESS. */ |
7070 | ||
7071 | void | |
7072 | setup_process_coding_systems (Lisp_Object process) | |
7073 | { | |
7074 | #ifdef subprocesses | |
7075 | struct Lisp_Process *p = XPROCESS (process); | |
7076 | int inch = p->infd; | |
7077 | int outch = p->outfd; | |
7078 | Lisp_Object coding_system; | |
7079 | ||
7080 | if (inch < 0 || outch < 0) | |
7081 | return; | |
7082 | ||
7083 | if (!proc_decode_coding_system[inch]) | |
38182d90 | 7084 | proc_decode_coding_system[inch] = xmalloc (sizeof (struct coding_system)); |
fc549af9 EZ |
7085 | coding_system = p->decode_coding_system; |
7086 | if (! NILP (p->filter)) | |
7087 | ; | |
7088 | else if (BUFFERP (p->buffer)) | |
7089 | { | |
4b4deea2 | 7090 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
7091 | coding_system = raw_text_coding_system (coding_system); |
7092 | } | |
7093 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7094 | ||
7095 | if (!proc_encode_coding_system[outch]) | |
38182d90 | 7096 | proc_encode_coding_system[outch] = xmalloc (sizeof (struct coding_system)); |
fc549af9 EZ |
7097 | setup_coding_system (p->encode_coding_system, |
7098 | proc_encode_coding_system[outch]); | |
7099 | #endif | |
7100 | } | |
7101 | ||
7102 | /* Close all descriptors currently in use for communication | |
7103 | with subprocess. This is used in a newly-forked subprocess | |
7104 | to get rid of irrelevant descriptors. */ | |
7105 | ||
7106 | void | |
7107 | close_process_descs (void) | |
7108 | { | |
7109 | #ifndef DOS_NT | |
7110 | int i; | |
7111 | for (i = 0; i < MAXDESC; i++) | |
7112 | { | |
7113 | Lisp_Object process; | |
7114 | process = chan_process[i]; | |
7115 | if (!NILP (process)) | |
7116 | { | |
7117 | int in = XPROCESS (process)->infd; | |
7118 | int out = XPROCESS (process)->outfd; | |
7119 | if (in >= 0) | |
7120 | emacs_close (in); | |
7121 | if (out >= 0 && in != out) | |
7122 | emacs_close (out); | |
7123 | } | |
7124 | } | |
7125 | #endif | |
7126 | } | |
7127 | ||
6720a7fb | 7128 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7129 | doc: /* Return the (or a) process associated with BUFFER. |
7130 | BUFFER may be a buffer or the name of one. */) | |
7131 | (register Lisp_Object buffer) | |
6720a7fb | 7132 | { |
f388c88a EZ |
7133 | #ifdef subprocesses |
7134 | register Lisp_Object buf, tail, proc; | |
7135 | ||
7136 | if (NILP (buffer)) return Qnil; | |
7137 | buf = Fget_buffer (buffer); | |
7138 | if (NILP (buf)) return Qnil; | |
7139 | ||
7140 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7141 | { | |
7142 | proc = Fcdr (XCAR (tail)); | |
7143 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) | |
7144 | return proc; | |
7145 | } | |
7146 | #endif /* subprocesses */ | |
6720a7fb JB |
7147 | return Qnil; |
7148 | } | |
7149 | ||
52a1b894 | 7150 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7151 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7152 | 1, 1, 0, | |
f388c88a EZ |
7153 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7154 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7155 | associated with PROCESS will inherit the coding system used to decode | |
7156 | the process output. */) | |
5842a27b | 7157 | (register Lisp_Object process) |
52a1b894 | 7158 | { |
f388c88a EZ |
7159 | #ifdef subprocesses |
7160 | CHECK_PROCESS (process); | |
7161 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7162 | #else | |
52a1b894 EZ |
7163 | /* Ignore the argument and return the value of |
7164 | inherit-process-coding-system. */ | |
7165 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7166 | #endif |
52a1b894 EZ |
7167 | } |
7168 | ||
6720a7fb | 7169 | /* Kill all processes associated with `buffer'. |
f388c88a | 7170 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7171 | |
d9bb0c32 | 7172 | void |
f388c88a | 7173 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7174 | { |
f388c88a EZ |
7175 | #ifdef subprocesses |
7176 | Lisp_Object tail, proc; | |
7177 | ||
7178 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7179 | { | |
7180 | proc = XCDR (XCAR (tail)); | |
7181 | if (PROCESSP (proc) | |
7182 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) | |
7183 | { | |
7184 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7185 | Fdelete_process (proc); | |
7186 | else if (XPROCESS (proc)->infd >= 0) | |
7187 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7188 | } | |
7189 | } | |
7190 | #else /* subprocesses */ | |
7191 | /* Since we have no subprocesses, this does nothing. */ | |
7192 | #endif /* subprocesses */ | |
6720a7fb JB |
7193 | } |
7194 | ||
a7ca3326 | 7195 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, |
16a97296 | 7196 | Swaiting_for_user_input_p, 0, 0, 0, |
77defa9a EZ |
7197 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
7198 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7199 | (void) | |
7200 | { | |
7201 | #ifdef subprocesses | |
7202 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7203 | #else | |
7204 | return Qnil; | |
7205 | #endif | |
7206 | } | |
7207 | ||
d568829b EZ |
7208 | /* Stop reading input from keyboard sources. */ |
7209 | ||
7210 | void | |
7211 | hold_keyboard_input (void) | |
7212 | { | |
7213 | kbd_is_on_hold = 1; | |
7214 | } | |
7215 | ||
7216 | /* Resume reading input from keyboard sources. */ | |
7217 | ||
7218 | void | |
7219 | unhold_keyboard_input (void) | |
7220 | { | |
7221 | kbd_is_on_hold = 0; | |
7222 | } | |
7223 | ||
7224 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7225 | ||
7226 | int | |
7227 | kbd_on_hold_p (void) | |
7228 | { | |
7229 | return kbd_is_on_hold; | |
7230 | } | |
7231 | ||
f388c88a EZ |
7232 | \f |
7233 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7234 | ||
934e2a68 EZ |
7235 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7236 | 0, 0, 0, | |
7237 | doc: /* Return a list of numerical process IDs of all running processes. | |
7238 | If this functionality is unsupported, return nil. | |
7239 | ||
f388c88a EZ |
7240 | See `process-attributes' for getting attributes of a process given its ID. */) |
7241 | (void) | |
7242 | { | |
7243 | return list_system_processes (); | |
7244 | } | |
7245 | ||
7246 | DEFUN ("process-attributes", Fprocess_attributes, | |
7247 | Sprocess_attributes, 1, 1, 0, | |
7248 | doc: /* Return attributes of the process given by its PID, a number. | |
7249 | ||
7250 | Value is an alist where each element is a cons cell of the form | |
7251 | ||
7252 | \(KEY . VALUE) | |
7253 | ||
7254 | If this functionality is unsupported, the value is nil. | |
7255 | ||
7256 | See `list-system-processes' for getting a list of all process IDs. | |
7257 | ||
7258 | The KEYs of the attributes that this function may return are listed | |
7259 | below, together with the type of the associated VALUE (in parentheses). | |
7260 | Not all platforms support all of these attributes; unsupported | |
7261 | attributes will not appear in the returned alist. | |
7262 | Unless explicitly indicated otherwise, numbers can have either | |
7263 | integer or floating point values. | |
7264 | ||
7265 | euid -- Effective user User ID of the process (number) | |
7266 | user -- User name corresponding to euid (string) | |
7267 | egid -- Effective user Group ID of the process (number) | |
7268 | group -- Group name corresponding to egid (string) | |
7269 | comm -- Command name (executable name only) (string) | |
7270 | state -- Process state code, such as "S", "R", or "T" (string) | |
7271 | ppid -- Parent process ID (number) | |
7272 | pgrp -- Process group ID (number) | |
7273 | sess -- Session ID, i.e. process ID of session leader (number) | |
7274 | ttname -- Controlling tty name (string) | |
7275 | tpgid -- ID of foreground process group on the process's tty (number) | |
7276 | minflt -- number of minor page faults (number) | |
7277 | majflt -- number of major page faults (number) | |
7278 | cminflt -- cumulative number of minor page faults (number) | |
7279 | cmajflt -- cumulative number of major page faults (number) | |
d35af63c PE |
7280 | utime -- user time used by the process, in (current-time) format, |
7281 | which is a list of integers (HIGH LOW USEC PSEC) | |
7282 | stime -- system time used by the process (current-time) | |
7283 | time -- sum of utime and stime (current-time) | |
7284 | cutime -- user time used by the process and its children (current-time) | |
7285 | cstime -- system time used by the process and its children (current-time) | |
7286 | ctime -- sum of cutime and cstime (current-time) | |
f388c88a EZ |
7287 | pri -- priority of the process (number) |
7288 | nice -- nice value of the process (number) | |
7289 | thcount -- process thread count (number) | |
d35af63c | 7290 | start -- time the process started (current-time) |
f388c88a EZ |
7291 | vsize -- virtual memory size of the process in KB's (number) |
7292 | rss -- resident set size of the process in KB's (number) | |
d35af63c | 7293 | etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format |
f388c88a EZ |
7294 | pcpu -- percents of CPU time used by the process (floating-point number) |
7295 | pmem -- percents of total physical memory used by process's resident set | |
7296 | (floating-point number) | |
7297 | args -- command line which invoked the process (string). */) | |
7298 | ( Lisp_Object pid) | |
7299 | { | |
7300 | return system_process_attributes (pid); | |
7301 | } | |
7302 | ||
7303 | \f | |
7304 | void | |
7305 | init_process (void) | |
7306 | { | |
7307 | #ifdef subprocesses | |
7308 | register int i; | |
7309 | ||
7310 | inhibit_sentinels = 0; | |
7311 | ||
7312 | #ifdef SIGCHLD | |
7313 | #ifndef CANNOT_DUMP | |
7314 | if (! noninteractive || initialized) | |
7315 | #endif | |
7316 | signal (SIGCHLD, sigchld_handler); | |
7317 | #endif | |
7318 | ||
7319 | FD_ZERO (&input_wait_mask); | |
7320 | FD_ZERO (&non_keyboard_wait_mask); | |
7321 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7322 | FD_ZERO (&write_mask); |
f388c88a | 7323 | max_process_desc = 0; |
3fad2ad2 | 7324 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7325 | |
7326 | #ifdef NON_BLOCKING_CONNECT | |
7327 | FD_ZERO (&connect_wait_mask); | |
7328 | num_pending_connects = 0; | |
7329 | #endif | |
7330 | ||
7331 | #ifdef ADAPTIVE_READ_BUFFERING | |
7332 | process_output_delay_count = 0; | |
7333 | process_output_skip = 0; | |
7334 | #endif | |
7335 | ||
7336 | /* Don't do this, it caused infinite select loops. The display | |
7337 | method should call add_keyboard_wait_descriptor on stdin if it | |
7338 | needs that. */ | |
7339 | #if 0 | |
7340 | FD_SET (0, &input_wait_mask); | |
7341 | #endif | |
7342 | ||
7343 | Vprocess_alist = Qnil; | |
7344 | #ifdef SIGCHLD | |
7345 | deleted_pid_list = Qnil; | |
7346 | #endif | |
7347 | for (i = 0; i < MAXDESC; i++) | |
7348 | { | |
7349 | chan_process[i] = Qnil; | |
7350 | proc_buffered_char[i] = -1; | |
7351 | } | |
7352 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7353 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7354 | #ifdef DATAGRAM_SOCKETS | |
7355 | memset (datagram_address, 0, sizeof datagram_address); | |
7356 | #endif | |
7357 | ||
f388c88a EZ |
7358 | { |
7359 | Lisp_Object subfeatures = Qnil; | |
7360 | const struct socket_options *sopt; | |
7361 | ||
7362 | #define ADD_SUBFEATURE(key, val) \ | |
7363 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7364 | ||
7365 | #ifdef NON_BLOCKING_CONNECT | |
7366 | ADD_SUBFEATURE (QCnowait, Qt); | |
7367 | #endif | |
7368 | #ifdef DATAGRAM_SOCKETS | |
7369 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7370 | #endif | |
7371 | #ifdef HAVE_SEQPACKET | |
7372 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7373 | #endif | |
7374 | #ifdef HAVE_LOCAL_SOCKETS | |
7375 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7376 | #endif | |
7377 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7378 | #ifdef AF_INET6 | |
7379 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7380 | #endif | |
7381 | #ifdef HAVE_GETSOCKNAME | |
7382 | ADD_SUBFEATURE (QCservice, Qt); | |
7383 | #endif | |
5e617bc2 | 7384 | #if defined (O_NONBLOCK) || defined (O_NDELAY) |
f388c88a EZ |
7385 | ADD_SUBFEATURE (QCserver, Qt); |
7386 | #endif | |
7387 | ||
7388 | for (sopt = socket_options; sopt->name; sopt++) | |
7389 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7390 | ||
7391 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7392 | } | |
f388c88a EZ |
7393 | |
7394 | #if defined (DARWIN_OS) | |
7395 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7396 | processes. As such, we only change the default value. */ | |
7397 | if (initialized) | |
7398 | { | |
f44bd759 PE |
7399 | char const *release = (STRINGP (Voperating_system_release) |
7400 | ? SSDATA (Voperating_system_release) | |
7401 | : 0); | |
f388c88a EZ |
7402 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION |
7403 | && release[1] == '.')) { | |
7404 | Vprocess_connection_type = Qnil; | |
7405 | } | |
7406 | } | |
7407 | #endif | |
7408 | #endif /* subprocesses */ | |
7409 | kbd_is_on_hold = 0; | |
7410 | } | |
7411 | ||
7412 | void | |
7413 | syms_of_process (void) | |
7414 | { | |
7415 | #ifdef subprocesses | |
7416 | ||
cd3520a4 JB |
7417 | DEFSYM (Qprocessp, "processp"); |
7418 | DEFSYM (Qrun, "run"); | |
7419 | DEFSYM (Qstop, "stop"); | |
7420 | DEFSYM (Qsignal, "signal"); | |
f388c88a EZ |
7421 | |
7422 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7423 | here again. | |
934e2a68 | 7424 | |
f388c88a EZ |
7425 | Qexit = intern_c_string ("exit"); |
7426 | staticpro (&Qexit); */ | |
934e2a68 | 7427 | |
cd3520a4 JB |
7428 | DEFSYM (Qopen, "open"); |
7429 | DEFSYM (Qclosed, "closed"); | |
7430 | DEFSYM (Qconnect, "connect"); | |
7431 | DEFSYM (Qfailed, "failed"); | |
7432 | DEFSYM (Qlisten, "listen"); | |
7433 | DEFSYM (Qlocal, "local"); | |
7434 | DEFSYM (Qipv4, "ipv4"); | |
f388c88a | 7435 | #ifdef AF_INET6 |
cd3520a4 JB |
7436 | DEFSYM (Qipv6, "ipv6"); |
7437 | #endif | |
7438 | DEFSYM (Qdatagram, "datagram"); | |
7439 | DEFSYM (Qseqpacket, "seqpacket"); | |
7440 | ||
7441 | DEFSYM (QCport, ":port"); | |
7442 | DEFSYM (QCspeed, ":speed"); | |
7443 | DEFSYM (QCprocess, ":process"); | |
7444 | ||
7445 | DEFSYM (QCbytesize, ":bytesize"); | |
7446 | DEFSYM (QCstopbits, ":stopbits"); | |
7447 | DEFSYM (QCparity, ":parity"); | |
7448 | DEFSYM (Qodd, "odd"); | |
7449 | DEFSYM (Qeven, "even"); | |
7450 | DEFSYM (QCflowcontrol, ":flowcontrol"); | |
7451 | DEFSYM (Qhw, "hw"); | |
7452 | DEFSYM (Qsw, "sw"); | |
7453 | DEFSYM (QCsummary, ":summary"); | |
7454 | ||
7455 | DEFSYM (Qreal, "real"); | |
7456 | DEFSYM (Qnetwork, "network"); | |
7457 | DEFSYM (Qserial, "serial"); | |
7458 | DEFSYM (QCbuffer, ":buffer"); | |
7459 | DEFSYM (QChost, ":host"); | |
7460 | DEFSYM (QCservice, ":service"); | |
7461 | DEFSYM (QClocal, ":local"); | |
7462 | DEFSYM (QCremote, ":remote"); | |
7463 | DEFSYM (QCcoding, ":coding"); | |
7464 | DEFSYM (QCserver, ":server"); | |
7465 | DEFSYM (QCnowait, ":nowait"); | |
7466 | DEFSYM (QCsentinel, ":sentinel"); | |
7467 | DEFSYM (QClog, ":log"); | |
7468 | DEFSYM (QCnoquery, ":noquery"); | |
7469 | DEFSYM (QCstop, ":stop"); | |
7470 | DEFSYM (QCoptions, ":options"); | |
7471 | DEFSYM (QCplist, ":plist"); | |
7472 | ||
7473 | DEFSYM (Qlast_nonmenu_event, "last-nonmenu-event"); | |
934e2a68 | 7474 | |
f388c88a EZ |
7475 | staticpro (&Vprocess_alist); |
7476 | #ifdef SIGCHLD | |
7477 | staticpro (&deleted_pid_list); | |
7478 | #endif | |
934e2a68 | 7479 | |
f388c88a | 7480 | #endif /* subprocesses */ |
6720a7fb | 7481 | |
cd3520a4 JB |
7482 | DEFSYM (QCname, ":name"); |
7483 | DEFSYM (QCtype, ":type"); | |
7484 | ||
7485 | DEFSYM (Qeuid, "euid"); | |
7486 | DEFSYM (Qegid, "egid"); | |
7487 | DEFSYM (Quser, "user"); | |
7488 | DEFSYM (Qgroup, "group"); | |
7489 | DEFSYM (Qcomm, "comm"); | |
7490 | DEFSYM (Qstate, "state"); | |
7491 | DEFSYM (Qppid, "ppid"); | |
7492 | DEFSYM (Qpgrp, "pgrp"); | |
7493 | DEFSYM (Qsess, "sess"); | |
7494 | DEFSYM (Qttname, "ttname"); | |
7495 | DEFSYM (Qtpgid, "tpgid"); | |
7496 | DEFSYM (Qminflt, "minflt"); | |
7497 | DEFSYM (Qmajflt, "majflt"); | |
7498 | DEFSYM (Qcminflt, "cminflt"); | |
7499 | DEFSYM (Qcmajflt, "cmajflt"); | |
7500 | DEFSYM (Qutime, "utime"); | |
7501 | DEFSYM (Qstime, "stime"); | |
7502 | DEFSYM (Qtime, "time"); | |
7503 | DEFSYM (Qcutime, "cutime"); | |
7504 | DEFSYM (Qcstime, "cstime"); | |
7505 | DEFSYM (Qctime, "ctime"); | |
7506 | DEFSYM (Qpri, "pri"); | |
7507 | DEFSYM (Qnice, "nice"); | |
7508 | DEFSYM (Qthcount, "thcount"); | |
7509 | DEFSYM (Qstart, "start"); | |
7510 | DEFSYM (Qvsize, "vsize"); | |
7511 | DEFSYM (Qrss, "rss"); | |
7512 | DEFSYM (Qetime, "etime"); | |
7513 | DEFSYM (Qpcpu, "pcpu"); | |
7514 | DEFSYM (Qpmem, "pmem"); | |
7515 | DEFSYM (Qargs, "args"); | |
9057ff80 | 7516 | |
29208e82 | 7517 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
fb7ada5f | 7518 | doc: /* Non-nil means delete processes immediately when they exit. |
f388c88a EZ |
7519 | A value of nil means don't delete them until `list-processes' is run. */); |
7520 | ||
7521 | delete_exited_processes = 1; | |
7522 | ||
462aa963 | 7523 | #ifdef subprocesses |
29208e82 | 7524 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7525 | doc: /* Control type of device used to communicate with subprocesses. |
7526 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7527 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7528 | then a pipe is used in any case. | |
7529 | The value takes effect when `start-process' is called. */); | |
7530 | Vprocess_connection_type = Qt; | |
7531 | ||
7532 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7533 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7534 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7535 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7536 | is read in very small blocks, potentially resulting in very poor performance. | |
7537 | This behavior can be remedied to some extent by setting this variable to a | |
7538 | non-nil value, as it will automatically delay reading from such processes, to | |
7539 | allow them to produce more output before Emacs tries to read it. | |
7540 | If the value is t, the delay is reset after each write to the process; any other | |
7541 | non-nil value means that the delay is not reset on write. | |
7542 | The variable takes effect when `start-process' is called. */); | |
7543 | Vprocess_adaptive_read_buffering = Qt; | |
7544 | #endif | |
7545 | ||
7546 | defsubr (&Sprocessp); | |
7547 | defsubr (&Sget_process); | |
7548 | defsubr (&Sdelete_process); | |
7549 | defsubr (&Sprocess_status); | |
7550 | defsubr (&Sprocess_exit_status); | |
7551 | defsubr (&Sprocess_id); | |
7552 | defsubr (&Sprocess_name); | |
7553 | defsubr (&Sprocess_tty_name); | |
7554 | defsubr (&Sprocess_command); | |
7555 | defsubr (&Sset_process_buffer); | |
7556 | defsubr (&Sprocess_buffer); | |
7557 | defsubr (&Sprocess_mark); | |
7558 | defsubr (&Sset_process_filter); | |
7559 | defsubr (&Sprocess_filter); | |
7560 | defsubr (&Sset_process_sentinel); | |
7561 | defsubr (&Sprocess_sentinel); | |
7562 | defsubr (&Sset_process_window_size); | |
7563 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7564 | defsubr (&Sset_process_query_on_exit_flag); | |
7565 | defsubr (&Sprocess_query_on_exit_flag); | |
7566 | defsubr (&Sprocess_contact); | |
7567 | defsubr (&Sprocess_plist); | |
7568 | defsubr (&Sset_process_plist); | |
f388c88a EZ |
7569 | defsubr (&Sprocess_list); |
7570 | defsubr (&Sstart_process); | |
f388c88a EZ |
7571 | defsubr (&Sserial_process_configure); |
7572 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7573 | defsubr (&Sset_network_process_option); |
7574 | defsubr (&Smake_network_process); | |
7575 | defsubr (&Sformat_network_address); | |
5e617bc2 | 7576 | #if defined (HAVE_NET_IF_H) |
f388c88a EZ |
7577 | #ifdef SIOCGIFCONF |
7578 | defsubr (&Snetwork_interface_list); | |
7579 | #endif | |
5e617bc2 | 7580 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
f388c88a EZ |
7581 | defsubr (&Snetwork_interface_info); |
7582 | #endif | |
5e617bc2 | 7583 | #endif /* defined (HAVE_NET_IF_H) */ |
f388c88a EZ |
7584 | #ifdef DATAGRAM_SOCKETS |
7585 | defsubr (&Sprocess_datagram_address); | |
7586 | defsubr (&Sset_process_datagram_address); | |
7587 | #endif | |
7588 | defsubr (&Saccept_process_output); | |
7589 | defsubr (&Sprocess_send_region); | |
7590 | defsubr (&Sprocess_send_string); | |
7591 | defsubr (&Sinterrupt_process); | |
7592 | defsubr (&Skill_process); | |
7593 | defsubr (&Squit_process); | |
7594 | defsubr (&Sstop_process); | |
7595 | defsubr (&Scontinue_process); | |
7596 | defsubr (&Sprocess_running_child_p); | |
7597 | defsubr (&Sprocess_send_eof); | |
7598 | defsubr (&Ssignal_process); | |
7599 | defsubr (&Swaiting_for_user_input_p); | |
7600 | defsubr (&Sprocess_type); | |
7601 | defsubr (&Sset_process_coding_system); | |
7602 | defsubr (&Sprocess_coding_system); | |
7603 | defsubr (&Sset_process_filter_multibyte); | |
7604 | defsubr (&Sprocess_filter_multibyte_p); | |
7605 | ||
7606 | #endif /* subprocesses */ | |
7607 | ||
6720a7fb | 7608 | defsubr (&Sget_buffer_process); |
52a1b894 | 7609 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7610 | defsubr (&Slist_system_processes); |
a20878b6 | 7611 | defsubr (&Sprocess_attributes); |
6720a7fb | 7612 | } |