Commit | Line | Data |
---|---|---|
d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
95df8112 | 2 | |
acaf905b | 3 | Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2012 |
95df8112 | 4 | Free Software Foundation, Inc. |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
d0d6b7c5 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
d0d6b7c5 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d0d6b7c5 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
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 | ||
4d2b044c DA |
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); |
21238f11 | 431 | PSET (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)) | |
13294f95 | 444 | return Fcons (Qexit, Fcons (make_number (WEXITSTATUS (w)), |
d0d6b7c5 JB |
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 | { |
4d2b044c | 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 | ||
d7ea76b4 | 500 | string = build_unibyte_string (signame); |
66bd43d1 KH |
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. */ | |
21238f11 DA |
629 | PSET (p, status, Qrun); |
630 | PSET (p, mark, Fmake_marker ()); | |
d0d6b7c5 | 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; | |
21238f11 | 651 | PSET (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 | { |
21238f11 | 748 | PSET (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); | |
4d2b044c DA |
766 | symbol = p->status; |
767 | if (CONSP (p->status)) | |
768 | symbol = XCAR (p->status); | |
a5cfdda8 | 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. */ | |
21238f11 | 777 | PSET (p, status, Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil))); |
60f0fb11 | 778 | p->tick = ++process_tick; |
a5cfdda8 | 779 | status_notify (p); |
e42bdf01 | 780 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 781 | } |
d0d6b7c5 | 782 | } |
4ee3e309 | 783 | remove_process (process); |
d0d6b7c5 JB |
784 | return Qnil; |
785 | } | |
786 | \f | |
787 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
788 | doc: /* Return the status of PROCESS. |
789 | The returned value is one of the following symbols: | |
790 | run -- for a process that is running. | |
791 | stop -- for a process stopped but continuable. | |
792 | exit -- for a process that has exited. | |
793 | signal -- for a process that has got a fatal signal. | |
794 | open -- for a network stream connection that is open. | |
e690ca94 | 795 | listen -- for a network stream server that is listening. |
fdb82f93 | 796 | closed -- for a network stream connection that is closed. |
e4984112 KS |
797 | connect -- when waiting for a non-blocking connection to complete. |
798 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
799 | nil -- if arg is a process name and no such process exists. |
800 | PROCESS may be a process, a buffer, the name of a process, or | |
801 | nil, indicating the current buffer's process. */) | |
5842a27b | 802 | (register Lisp_Object process) |
d0d6b7c5 JB |
803 | { |
804 | register struct Lisp_Process *p; | |
805 | register Lisp_Object status; | |
343f4114 | 806 | |
4ee3e309 EN |
807 | if (STRINGP (process)) |
808 | process = Fget_process (process); | |
343f4114 | 809 | else |
4ee3e309 | 810 | process = get_process (process); |
343f4114 | 811 | |
4ee3e309 EN |
812 | if (NILP (process)) |
813 | return process; | |
343f4114 | 814 | |
4ee3e309 | 815 | p = XPROCESS (process); |
6bfd98e7 | 816 | if (p->raw_status_new) |
d0d6b7c5 | 817 | update_status (p); |
4d2b044c | 818 | status = p->status; |
bcd69aea | 819 | if (CONSP (status)) |
70949dac | 820 | status = XCAR (status); |
d888760c | 821 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 822 | { |
e690ca94 | 823 | if (EQ (status, Qexit)) |
d0d6b7c5 | 824 | status = Qclosed; |
4d2b044c | 825 | else if (EQ (p->command, Qt)) |
e690ca94 KS |
826 | status = Qstop; |
827 | else if (EQ (status, Qrun)) | |
828 | status = Qopen; | |
d0d6b7c5 JB |
829 | } |
830 | return status; | |
831 | } | |
832 | ||
833 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
834 | 1, 1, 0, | |
fdb82f93 PJ |
835 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
836 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 837 | (register Lisp_Object process) |
d0d6b7c5 | 838 | { |
b7826503 | 839 | CHECK_PROCESS (process); |
6bfd98e7 | 840 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 | 841 | update_status (XPROCESS (process)); |
4d2b044c DA |
842 | if (CONSP (XPROCESS (process)->status)) |
843 | return XCAR (XCDR (XPROCESS (process)->status)); | |
d0d6b7c5 JB |
844 | return make_number (0); |
845 | } | |
846 | ||
847 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 848 | doc: /* Return the process id of PROCESS. |
f3d9532b | 849 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 850 | For a network connection, this value is nil. */) |
5842a27b | 851 | (register Lisp_Object process) |
d0d6b7c5 | 852 | { |
d311d28c | 853 | pid_t pid; |
d30fe779 | 854 | |
b7826503 | 855 | CHECK_PROCESS (process); |
d30fe779 EZ |
856 | pid = XPROCESS (process)->pid; |
857 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
858 | } |
859 | ||
860 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
861 | doc: /* Return the name of PROCESS, as a string. |
862 | This is the name of the program invoked in PROCESS, | |
863 | possibly modified to make it unique among process names. */) | |
5842a27b | 864 | (register Lisp_Object process) |
d0d6b7c5 | 865 | { |
b7826503 | 866 | CHECK_PROCESS (process); |
4d2b044c | 867 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
868 | } |
869 | ||
870 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
871 | doc: /* Return the command that was executed to start PROCESS. |
872 | This is a list of strings, the first string being the program executed | |
873 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
874 | For a network or serial process, this is nil (process is running) or t |
875 | \(process is stopped). */) | |
5842a27b | 876 | (register Lisp_Object process) |
d0d6b7c5 | 877 | { |
b7826503 | 878 | CHECK_PROCESS (process); |
4d2b044c | 879 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
880 | } |
881 | ||
3b9a3dfa | 882 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
883 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
884 | This is the terminal that the process itself reads and writes on, | |
885 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 886 | (register Lisp_Object process) |
3b9a3dfa | 887 | { |
b7826503 | 888 | CHECK_PROCESS (process); |
4d2b044c | 889 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
890 | } |
891 | ||
d0d6b7c5 | 892 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 | 893 | 2, 2, 0, |
76147d94 DD |
894 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). |
895 | Return BUFFER. */) | |
5842a27b | 896 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 897 | { |
e690ca94 KS |
898 | struct Lisp_Process *p; |
899 | ||
b7826503 | 900 | CHECK_PROCESS (process); |
d0d6b7c5 | 901 | if (!NILP (buffer)) |
b7826503 | 902 | CHECK_BUFFER (buffer); |
e690ca94 | 903 | p = XPROCESS (process); |
21238f11 | 904 | PSET (p, buffer, buffer); |
d888760c | 905 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
4d2b044c | 906 | PSET (p, childp, Fplist_put (p->childp, QCbuffer, buffer)); |
03f04413 | 907 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
908 | return buffer; |
909 | } | |
910 | ||
911 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
912 | 1, 1, 0, |
913 | doc: /* Return the buffer PROCESS is associated with. | |
914 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 915 | (register Lisp_Object process) |
d0d6b7c5 | 916 | { |
b7826503 | 917 | CHECK_PROCESS (process); |
4d2b044c | 918 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
919 | } |
920 | ||
921 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
922 | 1, 1, 0, |
923 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 924 | (register Lisp_Object process) |
d0d6b7c5 | 925 | { |
b7826503 | 926 | CHECK_PROCESS (process); |
4d2b044c | 927 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
928 | } |
929 | ||
930 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
931 | 2, 2, 0, |
932 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 933 | A value of t means stop accepting output from the process. |
3452df9e KS |
934 | |
935 | When a process has a filter, its buffer is not used for output. | |
936 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 937 | passed to the filter. |
3452df9e | 938 | |
fdb82f93 | 939 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
940 | The string argument is normally a multibyte string, except: |
941 | - if the process' input coding system is no-conversion or raw-text, | |
942 | it is a unibyte string (the non-converted input), or else | |
943 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
944 | string (the result of converting the decoded input multibyte | |
945 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 946 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 947 | { |
471f86b9 | 948 | struct Lisp_Process *p; |
177c0ea7 | 949 | |
b7826503 | 950 | CHECK_PROCESS (process); |
471f86b9 GM |
951 | p = XPROCESS (process); |
952 | ||
953 | /* Don't signal an error if the process' input file descriptor | |
954 | is closed. This could make debugging Lisp more difficult, | |
955 | for example when doing something like | |
956 | ||
957 | (setq process (start-process ...)) | |
958 | (debug) | |
959 | (set-process-filter process ...) */ | |
177c0ea7 | 960 | |
60f0fb11 | 961 | if (p->infd >= 0) |
a69281ff | 962 | { |
4d2b044c | 963 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 964 | { |
60f0fb11 SM |
965 | FD_CLR (p->infd, &input_wait_mask); |
966 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 967 | } |
4d2b044c | 968 | else if (EQ (p->filter, Qt) |
d888760c | 969 | /* Network or serial process not stopped: */ |
4d2b044c | 970 | && !EQ (p->command, Qt)) |
471f86b9 | 971 | { |
60f0fb11 SM |
972 | FD_SET (p->infd, &input_wait_mask); |
973 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 974 | } |
a69281ff | 975 | } |
177c0ea7 | 976 | |
21238f11 | 977 | PSET (p, filter, filter); |
d888760c | 978 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
4d2b044c | 979 | PSET (p, childp, Fplist_put (p->childp, QCfilter, filter)); |
03f04413 | 980 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
981 | return filter; |
982 | } | |
983 | ||
984 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
985 | 1, 1, 0, |
986 | doc: /* Returns the filter function of PROCESS; nil if none. | |
987 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 988 | (register Lisp_Object process) |
d0d6b7c5 | 989 | { |
b7826503 | 990 | CHECK_PROCESS (process); |
4d2b044c | 991 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
992 | } |
993 | ||
994 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
995 | 2, 2, 0, |
996 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
997 | The sentinel is called as a function when the process changes state. | |
998 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 999 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1000 | { |
6b61353c KH |
1001 | struct Lisp_Process *p; |
1002 | ||
b7826503 | 1003 | CHECK_PROCESS (process); |
6b61353c KH |
1004 | p = XPROCESS (process); |
1005 | ||
21238f11 | 1006 | PSET (p, sentinel, sentinel); |
d888760c | 1007 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
4d2b044c | 1008 | PSET (p, childp, Fplist_put (p->childp, QCsentinel, sentinel)); |
d0d6b7c5 JB |
1009 | return sentinel; |
1010 | } | |
1011 | ||
1012 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1013 | 1, 1, 0, |
1014 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1015 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 1016 | (register Lisp_Object process) |
d0d6b7c5 | 1017 | { |
b7826503 | 1018 | CHECK_PROCESS (process); |
4d2b044c | 1019 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1020 | } |
1021 | ||
396df322 | 1022 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1023 | Sset_process_window_size, 3, 3, 0, |
1024 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1025 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1026 | { |
b7826503 | 1027 | CHECK_PROCESS (process); |
af5a5a98 AS |
1028 | CHECK_RANGED_INTEGER (height, 0, INT_MAX); |
1029 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); | |
177c0ea7 | 1030 | |
60f0fb11 SM |
1031 | if (XPROCESS (process)->infd < 0 |
1032 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1033 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1034 | return Qnil; |
1035 | else | |
1036 | return Qt; | |
1037 | } | |
1038 | ||
52a1b894 | 1039 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1040 | Fset_process_inherit_coding_system_flag, |
1041 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1042 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1043 | If the second argument FLAG is non-nil, then the variable | |
1044 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1045 | will be bound to the value of the coding system used to decode | |
1046 | the process output. | |
1047 | ||
1048 | This is useful when the coding system specified for the process buffer | |
1049 | leaves either the character code conversion or the end-of-line conversion | |
1050 | unspecified, or if the coding system used to decode the process output | |
1051 | is more appropriate for saving the process buffer. | |
1052 | ||
1053 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1054 | starting the process is an alternative way of setting the inherit flag | |
016a35df GM |
1055 | for the process which will run. |
1056 | ||
1057 | This function returns FLAG. */) | |
5842a27b | 1058 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1059 | { |
b7826503 | 1060 | CHECK_PROCESS (process); |
60f0fb11 | 1061 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1062 | return flag; |
1063 | } | |
1064 | ||
e690ca94 KS |
1065 | DEFUN ("set-process-query-on-exit-flag", |
1066 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1067 | 2, 2, 0, | |
1068 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1069 | If the second argument FLAG is non-nil, Emacs will query the user before |
016a35df GM |
1070 | exiting or killing a buffer if PROCESS is running. This function |
1071 | returns FLAG. */) | |
5842a27b | 1072 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1073 | { |
b7826503 | 1074 | CHECK_PROCESS (process); |
60f0fb11 | 1075 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1076 | return flag; |
d0d6b7c5 | 1077 | } |
312c9964 | 1078 | |
e690ca94 KS |
1079 | DEFUN ("process-query-on-exit-flag", |
1080 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1081 | 1, 1, 0, |
f3d9532b | 1082 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1083 | (register Lisp_Object process) |
de282a05 | 1084 | { |
b7826503 | 1085 | CHECK_PROCESS (process); |
60f0fb11 | 1086 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1087 | } |
1088 | ||
e690ca94 KS |
1089 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, |
1090 | 1, 2, 0, | |
1091 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1092 | For a network or serial connection, the value depends on the optional |
1093 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1094 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1095 | connection. If KEY is t, the complete contact information for the | |
1096 | connection is returned, else the specific value for the keyword KEY is | |
1097 | returned. See `make-network-process' or `make-serial-process' for a | |
1098 | list of keywords. */) | |
5842a27b | 1099 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1100 | { |
1101 | Lisp_Object contact; | |
1102 | ||
1103 | CHECK_PROCESS (process); | |
4d2b044c | 1104 | contact = XPROCESS (process)->childp; |
e690ca94 KS |
1105 | |
1106 | #ifdef DATAGRAM_SOCKETS | |
1107 | if (DATAGRAM_CONN_P (process) | |
1108 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1109 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1110 | Fprocess_datagram_address (process)); |
1111 | #endif | |
1112 | ||
d888760c | 1113 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1114 | return contact; |
d888760c | 1115 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1116 | return Fcons (Fplist_get (contact, QChost), |
1117 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1118 | if (NILP (key) && SERIALCONN_P (process)) |
1119 | return Fcons (Fplist_get (contact, QCport), | |
1120 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1121 | return Fplist_get (contact, key); |
de282a05 RS |
1122 | } |
1123 | ||
faa7db08 KS |
1124 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1125 | 1, 1, 0, | |
1126 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1127 | (register Lisp_Object process) |
365aee82 | 1128 | { |
ac4a7584 | 1129 | CHECK_PROCESS (process); |
4d2b044c | 1130 | return XPROCESS (process)->plist; |
ac4a7584 | 1131 | } |
365aee82 | 1132 | |
faa7db08 KS |
1133 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1134 | 2, 2, 0, | |
26a086c6 | 1135 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1136 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1137 | { |
365aee82 | 1138 | CHECK_PROCESS (process); |
faa7db08 | 1139 | CHECK_LIST (plist); |
365aee82 | 1140 | |
21238f11 | 1141 | PSET (XPROCESS (process), plist, plist); |
26a086c6 | 1142 | return plist; |
365aee82 KS |
1143 | } |
1144 | ||
312c9964 RS |
1145 | #if 0 /* Turned off because we don't currently record this info |
1146 | in the process. Perhaps add it. */ | |
1147 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1148 | doc: /* Return the connection type of PROCESS. |
1149 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1150 | a socket connection. */) | |
5842a27b | 1151 | (Lisp_Object process) |
312c9964 | 1152 | { |
4d2b044c | 1153 | return XPROCESS (process)->type; |
312c9964 RS |
1154 | } |
1155 | #endif | |
2a7bb882 | 1156 | |
d888760c GM |
1157 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1158 | doc: /* Return the connection type of PROCESS. | |
1159 | The value is either the symbol `real', `network', or `serial'. | |
1160 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1161 | nil, indicating the current buffer's process. */) | |
5842a27b | 1162 | (Lisp_Object process) |
d888760c GM |
1163 | { |
1164 | Lisp_Object proc; | |
1165 | proc = get_process (process); | |
4d2b044c | 1166 | return XPROCESS (proc)->type; |
d888760c | 1167 | } |
991234f0 | 1168 | |
991234f0 | 1169 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1170 | 1, 2, 0, |
991234f0 | 1171 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1172 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1173 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1174 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1175 | number in the string, even when present in ADDRESS. |
1176 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1177 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1178 | { |
991234f0 KS |
1179 | if (NILP (address)) |
1180 | return Qnil; | |
1181 | ||
1182 | if (STRINGP (address)) /* AF_LOCAL */ | |
1183 | return address; | |
1184 | ||
e1652a86 | 1185 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1186 | { |
1187 | register struct Lisp_Vector *p = XVECTOR (address); | |
d311d28c | 1188 | ptrdiff_t size = p->header.size; |
ded83665 | 1189 | Lisp_Object args[10]; |
0dccee41 | 1190 | int nargs, i; |
991234f0 | 1191 | |
eab3844f | 1192 | if (size == 4 || (size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1193 | { |
1194 | args[0] = build_string ("%d.%d.%d.%d"); | |
1195 | nargs = 4; | |
1196 | } | |
eab3844f | 1197 | else if (size == 5) |
0dccee41 KS |
1198 | { |
1199 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1200 | nargs = 5; | |
1201 | } | |
eab3844f | 1202 | else if (size == 8 || (size == 9 && !NILP (omit_port))) |
e1652a86 KS |
1203 | { |
1204 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1205 | nargs = 8; | |
1206 | } | |
eab3844f | 1207 | else if (size == 9) |
e1652a86 KS |
1208 | { |
1209 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1210 | nargs = 9; | |
1211 | } | |
0dccee41 | 1212 | else |
991234f0 KS |
1213 | return Qnil; |
1214 | ||
0dccee41 | 1215 | for (i = 0; i < nargs; i++) |
cbf23adb | 1216 | { |
d311d28c | 1217 | if (! RANGED_INTEGERP (0, p->contents[i], 65535)) |
cbf23adb JB |
1218 | return Qnil; |
1219 | ||
1220 | if (nargs <= 5 /* IPv4 */ | |
1221 | && i < 4 /* host, not port */ | |
d311d28c | 1222 | && XINT (p->contents[i]) > 255) |
cbf23adb JB |
1223 | return Qnil; |
1224 | ||
1225 | args[i+1] = p->contents[i]; | |
1226 | } | |
1227 | ||
0dccee41 | 1228 | return Fformat (nargs+1, args); |
991234f0 KS |
1229 | } |
1230 | ||
1231 | if (CONSP (address)) | |
1232 | { | |
1233 | Lisp_Object args[2]; | |
1234 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1235 | args[1] = Fcar (address); |
991234f0 | 1236 | return Fformat (2, args); |
991234f0 KS |
1237 | } |
1238 | ||
1239 | return Qnil; | |
1240 | } | |
d0d6b7c5 JB |
1241 | |
1242 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1243 | doc: /* Return a list of all processes. */) |
5842a27b | 1244 | (void) |
d0d6b7c5 JB |
1245 | { |
1246 | return Fmapcar (Qcdr, Vprocess_alist); | |
1247 | } | |
1248 | \f | |
b0310da4 JB |
1249 | /* Starting asynchronous inferior processes. */ |
1250 | ||
d3da34e0 | 1251 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1252 | |
d0d6b7c5 | 1253 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1254 | doc: /* Start a program in a subprocess. Return the process object for it. |
1255 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1256 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1257 | |
1258 | Process output (both standard output and standard error streams) goes | |
1259 | at end of BUFFER, unless you specify an output stream or filter | |
1260 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1261 | this process is not associated with any buffer. |
1262 | ||
6b8bc570 CY |
1263 | PROGRAM is the program file name. It is searched for in `exec-path' |
1264 | (which see). If nil, just associate a pty with the buffer. Remaining | |
1265 | arguments are strings to give program as arguments. | |
320aebc9 | 1266 | |
4b6c5eee EZ |
1267 | If you want to separate standard output from standard error, invoke |
1268 | the command through a shell and redirect one of them using the shell | |
1269 | syntax. | |
320aebc9 | 1270 | |
3ecdf100 | 1271 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
f66c7cf8 | 1272 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 | 1273 | { |
1e30af70 | 1274 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1275 | register unsigned char **new_argv; |
f66c7cf8 | 1276 | ptrdiff_t i; |
d311d28c | 1277 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1278 | |
1279 | buffer = args[1]; | |
1280 | if (!NILP (buffer)) | |
1281 | buffer = Fget_buffer_create (buffer); | |
1282 | ||
1e30af70 JB |
1283 | /* Make sure that the child will be able to chdir to the current |
1284 | buffer's current directory, or its unhandled equivalent. We | |
1285 | can't just have the child check for an error when it does the | |
1286 | chdir, since it's in a vfork. | |
1287 | ||
1288 | We have to GCPRO around this because Fexpand_file_name and | |
1289 | Funhandled_file_name_directory might call a file name handling | |
1290 | function. The argument list is protected by the caller, so all | |
1291 | we really have to worry about is buffer. */ | |
1292 | { | |
1293 | struct gcpro gcpro1, gcpro2; | |
1294 | ||
4b4deea2 | 1295 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1296 | |
1297 | GCPRO2 (buffer, current_dir); | |
1298 | ||
ca319910 SM |
1299 | current_dir = Funhandled_file_name_directory (current_dir); |
1300 | if (NILP (current_dir)) | |
1301 | /* If the file name handler says that current_dir is unreachable, use | |
1302 | a sensible default. */ | |
1303 | current_dir = build_string ("~/"); | |
1304 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1305 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1306 | report_file_error ("Setting current directory", | |
4b4deea2 | 1307 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1308 | |
1309 | UNGCPRO; | |
1310 | } | |
1311 | ||
d0d6b7c5 | 1312 | name = args[0]; |
b7826503 | 1313 | CHECK_STRING (name); |
d0d6b7c5 JB |
1314 | |
1315 | program = args[2]; | |
1316 | ||
850d0752 NR |
1317 | if (!NILP (program)) |
1318 | CHECK_STRING (program); | |
d0d6b7c5 | 1319 | |
d0d6b7c5 | 1320 | proc = make_process (name); |
b0310da4 JB |
1321 | /* If an error occurs and we can't start the process, we want to |
1322 | remove it from the process list. This means that each error | |
1323 | check in create_process doesn't need to call remove_process | |
1324 | itself; it's all taken care of here. */ | |
1325 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 | 1326 | |
21238f11 DA |
1327 | PSET (XPROCESS (proc), childp, Qt); |
1328 | PSET (XPROCESS (proc), plist, Qnil); | |
1329 | PSET (XPROCESS (proc), type, Qreal); | |
1330 | PSET (XPROCESS (proc), buffer, buffer); | |
1331 | PSET (XPROCESS (proc), sentinel, Qnil); | |
1332 | PSET (XPROCESS (proc), filter, Qnil); | |
1333 | PSET (XPROCESS (proc), command, Flist (nargs - 2, args + 2)); | |
d0d6b7c5 | 1334 | |
8af55556 TZ |
1335 | #ifdef HAVE_GNUTLS |
1336 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1337 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
21238f11 | 1338 | PSET (XPROCESS (proc), gnutls_cred_type, Qnil); |
8af55556 TZ |
1339 | #endif |
1340 | ||
6b61353c | 1341 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1342 | XPROCESS (proc)->adaptive_read_buffering |
1343 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1344 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1345 | #endif |
1346 | ||
7af71e17 | 1347 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1348 | if (BUFFERP (buffer)) |
4d2b044c | 1349 | set_marker_both (XPROCESS (proc)->mark, buffer, |
d8a2934e RS |
1350 | BUF_ZV (XBUFFER (buffer)), |
1351 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1352 | |
67918941 | 1353 | { |
d5d4ae71 KH |
1354 | /* Decide coding systems for communicating with the process. Here |
1355 | we don't setup the structure coding_system nor pay attention to | |
1356 | unibyte mode. They are done in create_process. */ | |
1357 | ||
67918941 RS |
1358 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1359 | Lisp_Object coding_systems = Qt; | |
1360 | Lisp_Object val, *args2; | |
a4a37e65 | 1361 | struct gcpro gcpro1, gcpro2; |
67918941 | 1362 | |
d5d4ae71 KH |
1363 | val = Vcoding_system_for_read; |
1364 | if (NILP (val)) | |
67918941 | 1365 | { |
38182d90 | 1366 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1367 | args2[0] = Qstart_process; |
1368 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1369 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1370 | if (!NILP (program)) |
1371 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1372 | UNGCPRO; |
1373 | if (CONSP (coding_systems)) | |
70949dac | 1374 | val = XCAR (coding_systems); |
67918941 | 1375 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1376 | val = XCAR (Vdefault_process_coding_system); |
67918941 | 1377 | } |
21238f11 | 1378 | PSET (XPROCESS (proc), decode_coding_system, val); |
67918941 | 1379 | |
d5d4ae71 KH |
1380 | val = Vcoding_system_for_write; |
1381 | if (NILP (val)) | |
67918941 RS |
1382 | { |
1383 | if (EQ (coding_systems, Qt)) | |
1384 | { | |
38182d90 | 1385 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1386 | args2[0] = Qstart_process; |
1387 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1388 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1389 | if (!NILP (program)) |
1390 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1391 | UNGCPRO; |
1392 | } | |
1393 | if (CONSP (coding_systems)) | |
70949dac | 1394 | val = XCDR (coding_systems); |
67918941 | 1395 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1396 | val = XCDR (Vdefault_process_coding_system); |
67918941 | 1397 | } |
21238f11 | 1398 | PSET (XPROCESS (proc), encode_coding_system, val); |
e1dbe924 | 1399 | /* Note: At this moment, the above coding system may leave |
fcaf8878 KH |
1400 | text-conversion or eol-conversion unspecified. They will be |
1401 | decided after we read output from the process and decode it by | |
1402 | some coding system, or just before we actually send a text to | |
1403 | the process. */ | |
67918941 | 1404 | } |
0fa1789e | 1405 | |
a4a37e65 | 1406 | |
21238f11 | 1407 | PSET (XPROCESS (proc), decoding_buf, empty_unibyte_string); |
850d0752 | 1408 | XPROCESS (proc)->decoding_carryover = 0; |
21238f11 | 1409 | PSET (XPROCESS (proc), encoding_buf, empty_unibyte_string); |
ed30cf85 | 1410 | |
850d0752 NR |
1411 | XPROCESS (proc)->inherit_coding_system_flag |
1412 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1413 | |
850d0752 NR |
1414 | if (!NILP (program)) |
1415 | { | |
1416 | /* If program file name is not absolute, search our path for it. | |
1417 | Put the name we will really use in TEM. */ | |
1418 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1419 | && !(SCHARS (program) > 1 | |
1420 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1421 | { | |
1422 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1423 | ||
1424 | tem = Qnil; | |
1425 | GCPRO4 (name, program, buffer, current_dir); | |
1426 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1427 | UNGCPRO; | |
1428 | if (NILP (tem)) | |
1429 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1430 | tem = Fexpand_file_name (tem, Qnil); | |
1431 | } | |
1432 | else | |
1433 | { | |
1434 | if (!NILP (Ffile_directory_p (program))) | |
1435 | error ("Specified program for new process is a directory"); | |
1436 | tem = program; | |
1437 | } | |
ed30cf85 | 1438 | |
850d0752 NR |
1439 | /* If program file name starts with /: for quoting a magic name, |
1440 | discard that. */ | |
1441 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1442 | && SREF (tem, 1) == ':') | |
1443 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1444 | |
77bf07e1 | 1445 | { |
fcaf8878 | 1446 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1447 | struct gcpro gcpro1; |
1448 | GCPRO1 (tem); | |
a4a37e65 | 1449 | |
850d0752 NR |
1450 | /* Encode the file name and put it in NEW_ARGV. |
1451 | That's where the child will use it to execute the program. */ | |
1452 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1453 | |
850d0752 NR |
1454 | /* Here we encode arguments by the coding system used for sending |
1455 | data to the process. We don't support using different coding | |
1456 | systems for encoding arguments and for encoding data sent to the | |
1457 | process. */ | |
77bf07e1 | 1458 | |
850d0752 NR |
1459 | for (i = 3; i < nargs; i++) |
1460 | { | |
1461 | tem = Fcons (args[i], tem); | |
1462 | CHECK_STRING (XCAR (tem)); | |
1463 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1464 | { |
1465 | if (NILP (arg_encoding)) | |
1466 | arg_encoding = (complement_process_encoding_system | |
4d2b044c | 1467 | (XPROCESS (proc)->encode_coding_system)); |
fcaf8878 KH |
1468 | XSETCAR (tem, |
1469 | code_convert_string_norecord | |
1470 | (XCAR (tem), arg_encoding, 1)); | |
1471 | } | |
850d0752 | 1472 | } |
a4a37e65 | 1473 | |
850d0752 NR |
1474 | UNGCPRO; |
1475 | } | |
0fa1789e | 1476 | |
850d0752 NR |
1477 | /* Now that everything is encoded we can collect the strings into |
1478 | NEW_ARGV. */ | |
38182d90 | 1479 | new_argv = alloca ((nargs - 1) * sizeof *new_argv); |
850d0752 | 1480 | new_argv[nargs - 2] = 0; |
52a1b894 | 1481 | |
c5101a77 | 1482 | for (i = nargs - 2; i-- != 0; ) |
850d0752 NR |
1483 | { |
1484 | new_argv[i] = SDATA (XCAR (tem)); | |
1485 | tem = XCDR (tem); | |
1486 | } | |
1487 | ||
1488 | create_process (proc, (char **) new_argv, current_dir); | |
1489 | } | |
1490 | else | |
1491 | create_pty (proc); | |
d0d6b7c5 | 1492 | |
b0310da4 | 1493 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1494 | } |
1495 | ||
b0310da4 | 1496 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1497 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1498 | an error and the process wasn't started successfully, so we should |
1499 | remove it from the process list. */ | |
1500 | static Lisp_Object | |
d3da34e0 | 1501 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1502 | { |
bcd69aea | 1503 | if (!PROCESSP (proc)) |
b0310da4 JB |
1504 | abort (); |
1505 | ||
2bf26180 GM |
1506 | /* Was PROC started successfully? |
1507 | -2 is used for a pty with no process, eg for gdb. */ | |
1508 | if (XPROCESS (proc)->pid <= 0 && XPROCESS (proc)->pid != -2) | |
b0310da4 JB |
1509 | remove_process (proc); |
1510 | ||
1511 | return Qnil; | |
1512 | } | |
1513 | ||
ff6daed3 | 1514 | static void |
d3da34e0 | 1515 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1516 | { |
30904ab7 | 1517 | /* Nothing to do. */ |
d0d6b7c5 JB |
1518 | } |
1519 | ||
30904ab7 | 1520 | |
40ccffa6 | 1521 | static void |
d3da34e0 | 1522 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1523 | { |
29ed4d51 CY |
1524 | int inchannel, outchannel; |
1525 | pid_t pid; | |
d0d6b7c5 | 1526 | int sv[2]; |
2c4df143 YM |
1527 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1528 | int wait_child_setup[2]; | |
1529 | #endif | |
0dc70c33 KH |
1530 | sigset_t procmask; |
1531 | sigset_t blocked; | |
1532 | struct sigaction sigint_action; | |
1533 | struct sigaction sigquit_action; | |
c0ad4ea5 | 1534 | struct sigaction sigpipe_action; |
0dc70c33 KH |
1535 | #ifdef AIX |
1536 | struct sigaction sighup_action; | |
1537 | #endif | |
ecd1f654 KH |
1538 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1539 | volatile int forkin, forkout; | |
1540 | volatile int pty_flag = 0; | |
3ec68006 | 1541 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1542 | extern char **environ; |
3ec68006 | 1543 | #endif |
d0d6b7c5 | 1544 | |
d0d6b7c5 JB |
1545 | inchannel = outchannel = -1; |
1546 | ||
1547 | #ifdef HAVE_PTYS | |
fe45da4e | 1548 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1549 | outchannel = inchannel = allocate_pty (); |
1550 | ||
d0d6b7c5 JB |
1551 | if (inchannel >= 0) |
1552 | { | |
2af70a0c RS |
1553 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1554 | /* On most USG systems it does not work to open the pty's tty here, | |
1555 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1556 | #ifdef O_NOCTTY |
1557 | /* Don't let this terminal become our controlling terminal | |
1558 | (in case we don't have one). */ | |
68c45bf0 | 1559 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1560 | #else |
68c45bf0 | 1561 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1562 | #endif |
1563 | if (forkin < 0) | |
1564 | report_file_error ("Opening pty", Qnil); | |
1565 | #else | |
1566 | forkin = forkout = -1; | |
2af70a0c | 1567 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1568 | pty_flag = 1; |
1569 | } | |
1570 | else | |
1571 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1572 | { |
fc14013c KH |
1573 | int tem; |
1574 | tem = pipe (sv); | |
1575 | if (tem < 0) | |
1576 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1577 | inchannel = sv[0]; |
1578 | forkout = sv[1]; | |
fc14013c KH |
1579 | tem = pipe (sv); |
1580 | if (tem < 0) | |
1581 | { | |
68c45bf0 PE |
1582 | emacs_close (inchannel); |
1583 | emacs_close (forkout); | |
fc14013c KH |
1584 | report_file_error ("Creating pipe", Qnil); |
1585 | } | |
d0d6b7c5 JB |
1586 | outchannel = sv[1]; |
1587 | forkin = sv[0]; | |
1588 | } | |
d0d6b7c5 | 1589 | |
2c4df143 YM |
1590 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1591 | { | |
1592 | int tem; | |
1593 | ||
1594 | tem = pipe (wait_child_setup); | |
1595 | if (tem < 0) | |
1596 | report_file_error ("Creating pipe", Qnil); | |
1597 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1598 | if (tem >= 0) | |
1599 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1600 | if (tem < 0) | |
1601 | { | |
1602 | emacs_close (wait_child_setup[0]); | |
1603 | emacs_close (wait_child_setup[1]); | |
1604 | report_file_error ("Setting file descriptor flags", Qnil); | |
1605 | } | |
1606 | } | |
1607 | #endif | |
1608 | ||
d0d6b7c5 JB |
1609 | #ifdef O_NONBLOCK |
1610 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1611 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1612 | #else |
1613 | #ifdef O_NDELAY | |
1614 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1615 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1616 | #endif |
1617 | #endif | |
1618 | ||
1619 | /* Record this as an active process, with its channels. | |
1620 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1621 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1622 | XPROCESS (process)->infd = inchannel; |
1623 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1624 | |
1625 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1626 | It was only used for getting the foreground tty process, so now | |
1627 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1628 | more portable (see USG_SUBTTY_WORKS above). */ | |
1629 | ||
60f0fb11 | 1630 | XPROCESS (process)->pty_flag = pty_flag; |
21238f11 | 1631 | PSET (XPROCESS (process), status, Qrun); |
d0d6b7c5 JB |
1632 | |
1633 | /* Delay interrupts until we have a chance to store | |
1634 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1635 | sigemptyset (&blocked); |
1636 | #ifdef SIGCHLD | |
1637 | sigaddset (&blocked, SIGCHLD); | |
1638 | #endif | |
351e611f | 1639 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1640 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1641 | this sets the parent's signal handlers as well as the child's. | |
1642 | So delay all interrupts whose handlers the child might munge, | |
1643 | and record the current handlers so they can be restored later. */ | |
1644 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1645 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
c0ad4ea5 | 1646 | sigaddset (&blocked, SIGPIPE); sigaction (SIGPIPE, 0, &sigpipe_action); |
0dc70c33 KH |
1647 | #ifdef AIX |
1648 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1649 | #endif | |
351e611f | 1650 | #endif /* HAVE_WORKING_VFORK */ |
123403e4 | 1651 | pthread_sigmask (SIG_BLOCK, &blocked, &procmask); |
d0d6b7c5 | 1652 | |
3081bf8d | 1653 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1654 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1655 | if (inchannel > max_process_desc) |
1656 | max_process_desc = inchannel; | |
1657 | ||
d0d6b7c5 JB |
1658 | /* Until we store the proper pid, enable sigchld_handler |
1659 | to recognize an unknown pid as standing for this process. | |
1660 | It is very important not to let this `marker' value stay | |
1661 | in the table after this function has returned; if it does | |
1662 | it might cause call-process to hang and subsequent asynchronous | |
1663 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1664 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1665 | |
5cf2b69b KH |
1666 | /* This must be called after the above line because it may signal an |
1667 | error. */ | |
1668 | setup_process_coding_systems (process); | |
1669 | ||
ececcbec | 1670 | BLOCK_INPUT; |
177c0ea7 | 1671 | |
d0d6b7c5 JB |
1672 | { |
1673 | /* child_setup must clobber environ on systems with true vfork. | |
1674 | Protect it from permanent change. */ | |
1675 | char **save_environ = environ; | |
12d8b6ab | 1676 | volatile Lisp_Object encoded_current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1677 | |
e98d950b | 1678 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1679 | pid = vfork (); |
1680 | if (pid == 0) | |
e98d950b | 1681 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1682 | { |
1683 | int xforkin = forkin; | |
1684 | int xforkout = forkout; | |
1685 | ||
1686 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1687 | but fails to handle all the cases. */ | |
1688 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1689 | sigsetmask (SIGEMPTYMASK); | |
1690 | #endif | |
1691 | ||
1692 | /* Make the pty be the controlling terminal of the process. */ | |
1693 | #ifdef HAVE_PTYS | |
1694 | /* First, disconnect its current controlling terminal. */ | |
1695 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1696 | /* We tried doing setsid only if pty_flag, but it caused |
1697 | process_set_signal to fail on SGI when using a pipe. */ | |
1698 | setsid (); | |
ce4c9c90 | 1699 | /* Make the pty's terminal the controlling terminal. */ |
ce8f5a9a | 1700 | if (pty_flag && xforkin >= 0) |
39e9ebcd | 1701 | { |
39e9ebcd RS |
1702 | #ifdef TIOCSCTTY |
1703 | /* We ignore the return value | |
1704 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1705 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1706 | #endif |
39e9ebcd | 1707 | } |
d0d6b7c5 | 1708 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1709 | #ifdef USG |
000ab717 | 1710 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1711 | afterwards. Otherwise, we lose our controlling tty which |
1712 | is set when we open the pty. */ | |
1713 | setpgrp (); | |
1714 | #endif /* USG */ | |
1715 | #endif /* not HAVE_SETSID */ | |
a7ebc409 | 1716 | #if defined (LDISC1) |
9bcf8ec6 KH |
1717 | if (pty_flag && xforkin >= 0) |
1718 | { | |
1719 | struct termios t; | |
1720 | tcgetattr (xforkin, &t); | |
1721 | t.c_lflag = LDISC1; | |
1722 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1723 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1724 | } |
1725 | #else | |
aafadd9f | 1726 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1727 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1728 | { |
1729 | /* Use new line discipline. */ | |
1730 | int ldisc = NTTYDISC; | |
4458f555 | 1731 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1732 | } |
000ab717 | 1733 | #endif |
9bcf8ec6 | 1734 | #endif |
177c0ea7 | 1735 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1736 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1737 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1738 | if (pty_flag) | |
1739 | { | |
177c0ea7 | 1740 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1741 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1742 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
ce8f5a9a AS |
1743 | if (j >= 0) |
1744 | { | |
1745 | ioctl (j, TIOCNOTTY, 0); | |
1746 | emacs_close (j); | |
1747 | } | |
5a570e37 | 1748 | #ifndef USG |
d0d6b7c5 JB |
1749 | /* In order to get a controlling terminal on some versions |
1750 | of BSD, it is necessary to put the process in pgrp 0 | |
1751 | before it opens the terminal. */ | |
99c1aeca | 1752 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1753 | setpgid (0, 0); |
1754 | #else | |
d0d6b7c5 | 1755 | setpgrp (0, 0); |
3ea1d291 | 1756 | #endif |
d0d6b7c5 JB |
1757 | #endif |
1758 | } | |
1759 | #endif /* TIOCNOTTY */ | |
1760 | ||
e39a993c | 1761 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1762 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1763 | conditional on TIOCSPGRP, |
1764 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1765 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1766 | that system does seem to need this code, even though | |
1767 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1768 | /* Now close the pty (if we had it open) and reopen it. |
1769 | This makes the pty the controlling terminal of the subprocess. */ | |
1770 | if (pty_flag) | |
1771 | { | |
99e3d726 | 1772 | |
68c45bf0 PE |
1773 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1774 | would work? */ | |
d0d6b7c5 | 1775 | if (xforkin >= 0) |
68c45bf0 PE |
1776 | emacs_close (xforkin); |
1777 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1778 | |
4aa54ba8 RS |
1779 | if (xforkin < 0) |
1780 | { | |
68c45bf0 PE |
1781 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
1782 | emacs_write (1, pty_name, strlen (pty_name)); | |
1783 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
1784 | _exit (1); |
1785 | } | |
1786 | ||
d0d6b7c5 | 1787 | } |
e39a993c | 1788 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1789 | |
d0d6b7c5 | 1790 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
1791 | if (pty_flag) |
1792 | { | |
1793 | SETUP_SLAVE_PTY; | |
1794 | } | |
d0d6b7c5 JB |
1795 | #endif /* SETUP_SLAVE_PTY */ |
1796 | #ifdef AIX | |
1797 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
1798 | Now reenable it in the child, so it will die when we want it to. */ | |
1799 | if (pty_flag) | |
1800 | signal (SIGHUP, SIG_DFL); | |
1801 | #endif | |
1802 | #endif /* HAVE_PTYS */ | |
1803 | ||
0dc70c33 KH |
1804 | signal (SIGINT, SIG_DFL); |
1805 | signal (SIGQUIT, SIG_DFL); | |
2f9a22e2 | 1806 | /* GConf causes us to ignore SIGPIPE, make sure it is restored |
c0ad4ea5 AS |
1807 | in the child. */ |
1808 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 KH |
1809 | |
1810 | /* Stop blocking signals in the child. */ | |
123403e4 | 1811 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
5e7e1da2 | 1812 | |
ab01d0a8 RS |
1813 | if (pty_flag) |
1814 | child_setup_tty (xforkout); | |
e98d950b RS |
1815 | #ifdef WINDOWSNT |
1816 | pid = child_setup (xforkin, xforkout, xforkout, | |
12d8b6ab | 1817 | new_argv, 1, encoded_current_dir); |
177c0ea7 | 1818 | #else /* not WINDOWSNT */ |
2c4df143 YM |
1819 | #ifdef FD_CLOEXEC |
1820 | emacs_close (wait_child_setup[0]); | |
1821 | #endif | |
d0d6b7c5 | 1822 | child_setup (xforkin, xforkout, xforkout, |
12d8b6ab | 1823 | new_argv, 1, encoded_current_dir); |
e98d950b | 1824 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1825 | } |
1826 | environ = save_environ; | |
1827 | } | |
1828 | ||
ececcbec RS |
1829 | UNBLOCK_INPUT; |
1830 | ||
4a127b3b | 1831 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 1832 | if (pid < 0) |
6311cf58 RS |
1833 | { |
1834 | if (forkin >= 0) | |
68c45bf0 | 1835 | emacs_close (forkin); |
6311cf58 | 1836 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1837 | emacs_close (forkout); |
6311cf58 | 1838 | } |
4a127b3b KH |
1839 | else |
1840 | { | |
1841 | /* vfork succeeded. */ | |
6bfd98e7 | 1842 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 1843 | |
e98d950b | 1844 | #ifdef WINDOWSNT |
4a127b3b | 1845 | register_child (pid, inchannel); |
e98d950b RS |
1846 | #endif /* WINDOWSNT */ |
1847 | ||
4a127b3b KH |
1848 | /* If the subfork execv fails, and it exits, |
1849 | this close hangs. I don't know why. | |
1850 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
1851 | { |
1852 | struct atimer *timer; | |
e9a9ae03 | 1853 | EMACS_TIME offset = make_emacs_time (1, 0); |
177c0ea7 | 1854 | |
30904ab7 | 1855 | stop_polling (); |
30904ab7 | 1856 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); |
177c0ea7 | 1857 | |
30904ab7 GM |
1858 | if (forkin >= 0) |
1859 | emacs_close (forkin); | |
1860 | ||
1861 | cancel_atimer (timer); | |
1862 | start_polling (); | |
1863 | } | |
177c0ea7 | 1864 | |
4a127b3b | 1865 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1866 | emacs_close (forkout); |
d0d6b7c5 | 1867 | |
875e6b94 | 1868 | #ifdef HAVE_PTYS |
4a127b3b | 1869 | if (pty_flag) |
21238f11 | 1870 | PSET (XPROCESS (process), tty_name, build_string (pty_name)); |
4a127b3b | 1871 | else |
875e6b94 | 1872 | #endif |
21238f11 | 1873 | PSET (XPROCESS (process), tty_name, Qnil); |
2c4df143 YM |
1874 | |
1875 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
1876 | /* Wait for child_setup to complete in case that vfork is | |
1877 | actually defined as fork. The descriptor wait_child_setup[1] | |
1878 | of a pipe is closed at the child side either by close-on-exec | |
1879 | on successful execvp or the _exit call in child_setup. */ | |
1880 | { | |
1881 | char dummy; | |
1882 | ||
1883 | emacs_close (wait_child_setup[1]); | |
1884 | emacs_read (wait_child_setup[0], &dummy, 1); | |
1885 | emacs_close (wait_child_setup[0]); | |
1886 | } | |
1887 | #endif | |
4a127b3b | 1888 | } |
3b9a3dfa | 1889 | |
4a127b3b KH |
1890 | /* Restore the signal state whether vfork succeeded or not. |
1891 | (We will signal an error, below, if it failed.) */ | |
351e611f | 1892 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1893 | /* Restore the parent's signal handlers. */ |
1894 | sigaction (SIGINT, &sigint_action, 0); | |
1895 | sigaction (SIGQUIT, &sigquit_action, 0); | |
c0ad4ea5 | 1896 | sigaction (SIGPIPE, &sigpipe_action, 0); |
0dc70c33 KH |
1897 | #ifdef AIX |
1898 | sigaction (SIGHUP, &sighup_action, 0); | |
1899 | #endif | |
351e611f | 1900 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 | 1901 | /* Stop blocking signals in the parent. */ |
123403e4 | 1902 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
4a127b3b KH |
1903 | |
1904 | /* Now generate the error if vfork failed. */ | |
1905 | if (pid < 0) | |
1906 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 1907 | } |
d0d6b7c5 | 1908 | |
850d0752 | 1909 | void |
d3da34e0 | 1910 | create_pty (Lisp_Object process) |
850d0752 NR |
1911 | { |
1912 | int inchannel, outchannel; | |
afd4052b | 1913 | int pty_flag = 0; |
850d0752 NR |
1914 | |
1915 | inchannel = outchannel = -1; | |
1916 | ||
1917 | #ifdef HAVE_PTYS | |
1918 | if (!NILP (Vprocess_connection_type)) | |
1919 | outchannel = inchannel = allocate_pty (); | |
1920 | ||
1921 | if (inchannel >= 0) | |
1922 | { | |
1923 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
1924 | /* On most USG systems it does not work to open the pty's tty here, | |
1925 | then close it and reopen it in the child. */ | |
1926 | #ifdef O_NOCTTY | |
1927 | /* Don't let this terminal become our controlling terminal | |
1928 | (in case we don't have one). */ | |
afd4052b | 1929 | int forkout = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
850d0752 | 1930 | #else |
afd4052b | 1931 | int forkout = emacs_open (pty_name, O_RDWR, 0); |
850d0752 | 1932 | #endif |
aba7731a | 1933 | if (forkout < 0) |
850d0752 | 1934 | report_file_error ("Opening pty", Qnil); |
019d2c4c | 1935 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
1936 | /* In the case that vfork is defined as fork, the parent process |
1937 | (Emacs) may send some data before the child process completes | |
1938 | tty options setup. So we setup tty before forking. */ | |
1939 | child_setup_tty (forkout); | |
019d2c4c | 1940 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
1941 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
1942 | pty_flag = 1; | |
1943 | } | |
1944 | #endif /* HAVE_PTYS */ | |
1945 | ||
1946 | #ifdef O_NONBLOCK | |
1947 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
1948 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
1949 | #else | |
1950 | #ifdef O_NDELAY | |
1951 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
1952 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
1953 | #endif | |
1954 | #endif | |
1955 | ||
1956 | /* Record this as an active process, with its channels. | |
1957 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1958 | chan_process[inchannel] = process; | |
1959 | XPROCESS (process)->infd = inchannel; | |
1960 | XPROCESS (process)->outfd = outchannel; | |
1961 | ||
1962 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1963 | It was only used for getting the foreground tty process, so now | |
1964 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1965 | more portable (see USG_SUBTTY_WORKS above). */ | |
1966 | ||
1967 | XPROCESS (process)->pty_flag = pty_flag; | |
21238f11 | 1968 | PSET (XPROCESS (process), status, Qrun); |
850d0752 NR |
1969 | setup_process_coding_systems (process); |
1970 | ||
1971 | FD_SET (inchannel, &input_wait_mask); | |
1972 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
1973 | if (inchannel > max_process_desc) | |
1974 | max_process_desc = inchannel; | |
1975 | ||
1976 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
1977 | #ifdef HAVE_PTYS |
1978 | if (pty_flag) | |
21238f11 | 1979 | PSET (XPROCESS (process), tty_name, build_string (pty_name)); |
8b9fc636 EZ |
1980 | else |
1981 | #endif | |
21238f11 | 1982 | PSET (XPROCESS (process), tty_name, Qnil); |
850d0752 NR |
1983 | } |
1984 | ||
e690ca94 | 1985 | \f |
e690ca94 KS |
1986 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
1987 | The address family of sa is not included in the result. */ | |
1988 | ||
1989 | static Lisp_Object | |
d3da34e0 | 1990 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
1991 | { |
1992 | Lisp_Object address; | |
1993 | int i; | |
1994 | unsigned char *cp; | |
1995 | register struct Lisp_Vector *p; | |
1996 | ||
63136da6 AS |
1997 | /* Workaround for a bug in getsockname on BSD: Names bound to |
1998 | sockets in the UNIX domain are inaccessible; getsockname returns | |
1999 | a zero length name. */ | |
89887d67 | 2000 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2001 | return empty_unibyte_string; |
63136da6 | 2002 | |
e690ca94 KS |
2003 | switch (sa->sa_family) |
2004 | { | |
2005 | case AF_INET: | |
2006 | { | |
2007 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2008 | len = sizeof (sin->sin_addr) + 1; | |
2009 | address = Fmake_vector (make_number (len), Qnil); | |
2010 | p = XVECTOR (address); | |
2011 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2012 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2013 | break; |
2014 | } | |
e1652a86 KS |
2015 | #ifdef AF_INET6 |
2016 | case AF_INET6: | |
2017 | { | |
2018 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2019 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2020 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2021 | address = Fmake_vector (make_number (len), Qnil); | |
2022 | p = XVECTOR (address); | |
2023 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2024 | for (i = 0; i < len; i++) | |
2025 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2026 | return address; | |
2027 | } | |
2028 | #endif | |
e690ca94 KS |
2029 | #ifdef HAVE_LOCAL_SOCKETS |
2030 | case AF_LOCAL: | |
2031 | { | |
fb23673a EZ |
2032 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2033 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2034 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2035 | break; |
fb23673a | 2036 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2037 | } |
2038 | #endif | |
2039 | default: | |
89887d67 | 2040 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2041 | address = Fcons (make_number (sa->sa_family), |
2042 | Fmake_vector (make_number (len), Qnil)); | |
2043 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2044 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2045 | break; |
2046 | } | |
2047 | ||
2048 | i = 0; | |
2049 | while (i < len) | |
2050 | p->contents[i++] = make_number (*cp++); | |
2051 | ||
2052 | return address; | |
2053 | } | |
2054 | ||
2055 | ||
2056 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2057 | ||
2058 | static int | |
d3da34e0 | 2059 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2060 | { |
2061 | register struct Lisp_Vector *p; | |
2062 | ||
2063 | if (VECTORP (address)) | |
2064 | { | |
2065 | p = XVECTOR (address); | |
eab3844f | 2066 | if (p->header.size == 5) |
e690ca94 KS |
2067 | { |
2068 | *familyp = AF_INET; | |
2069 | return sizeof (struct sockaddr_in); | |
2070 | } | |
e1652a86 | 2071 | #ifdef AF_INET6 |
eab3844f | 2072 | else if (p->header.size == 9) |
e1652a86 KS |
2073 | { |
2074 | *familyp = AF_INET6; | |
2075 | return sizeof (struct sockaddr_in6); | |
2076 | } | |
2077 | #endif | |
e690ca94 KS |
2078 | } |
2079 | #ifdef HAVE_LOCAL_SOCKETS | |
2080 | else if (STRINGP (address)) | |
2081 | { | |
2082 | *familyp = AF_LOCAL; | |
2083 | return sizeof (struct sockaddr_un); | |
2084 | } | |
2085 | #endif | |
d311d28c PE |
2086 | else if (CONSP (address) && TYPE_RANGED_INTEGERP (int, XCAR (address)) |
2087 | && VECTORP (XCDR (address))) | |
e690ca94 KS |
2088 | { |
2089 | struct sockaddr *sa; | |
2090 | *familyp = XINT (XCAR (address)); | |
2091 | p = XVECTOR (XCDR (address)); | |
eab3844f | 2092 | return p->header.size + sizeof (sa->sa_family); |
e690ca94 KS |
2093 | } |
2094 | return 0; | |
2095 | } | |
2096 | ||
2097 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2098 | |
2099 | The address format has been basically validated by | |
2100 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2101 | it could have come from user data. So if FAMILY is not valid, | |
2102 | we return after zeroing *SA. */ | |
e690ca94 KS |
2103 | |
2104 | static void | |
d3da34e0 | 2105 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2106 | { |
2107 | register struct Lisp_Vector *p; | |
34967d0f | 2108 | register unsigned char *cp = NULL; |
e690ca94 | 2109 | register int i; |
d311d28c | 2110 | EMACS_INT hostport; |
e690ca94 | 2111 | |
72af86bd | 2112 | memset (sa, 0, len); |
e690ca94 KS |
2113 | |
2114 | if (VECTORP (address)) | |
2115 | { | |
2116 | p = XVECTOR (address); | |
2117 | if (family == AF_INET) | |
2118 | { | |
2119 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2120 | len = sizeof (sin->sin_addr) + 1; | |
d311d28c PE |
2121 | hostport = XINT (p->contents[--len]); |
2122 | sin->sin_port = htons (hostport); | |
e690ca94 | 2123 | cp = (unsigned char *)&sin->sin_addr; |
9d1a8e5d | 2124 | sa->sa_family = family; |
e690ca94 | 2125 | } |
e1652a86 KS |
2126 | #ifdef AF_INET6 |
2127 | else if (family == AF_INET6) | |
2128 | { | |
2129 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2130 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2131 | len = sizeof (sin6->sin6_addr) + 1; | |
d311d28c PE |
2132 | hostport = XINT (p->contents[--len]); |
2133 | sin6->sin6_port = htons (hostport); | |
e1652a86 KS |
2134 | for (i = 0; i < len; i++) |
2135 | if (INTEGERP (p->contents[i])) | |
2136 | { | |
2137 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2138 | ip6[i] = ntohs (j); | |
2139 | } | |
9d1a8e5d | 2140 | sa->sa_family = family; |
0eb7675e | 2141 | return; |
e1652a86 KS |
2142 | } |
2143 | #endif | |
0eb7675e AS |
2144 | else |
2145 | return; | |
e690ca94 KS |
2146 | } |
2147 | else if (STRINGP (address)) | |
2148 | { | |
2149 | #ifdef HAVE_LOCAL_SOCKETS | |
2150 | if (family == AF_LOCAL) | |
2151 | { | |
fb23673a | 2152 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2153 | cp = SDATA (address); |
fb23673a EZ |
2154 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2155 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2156 | sa->sa_family = family; |
e690ca94 KS |
2157 | } |
2158 | #endif | |
2159 | return; | |
2160 | } | |
2161 | else | |
2162 | { | |
2163 | p = XVECTOR (XCDR (address)); | |
2164 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2165 | } | |
2166 | ||
2167 | for (i = 0; i < len; i++) | |
2168 | if (INTEGERP (p->contents[i])) | |
2169 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2170 | } | |
2171 | ||
2172 | #ifdef DATAGRAM_SOCKETS | |
2173 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2174 | 1, 1, 0, | |
2175 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2176 | (Lisp_Object process) |
e690ca94 KS |
2177 | { |
2178 | int channel; | |
2179 | ||
2180 | CHECK_PROCESS (process); | |
2181 | ||
2182 | if (!DATAGRAM_CONN_P (process)) | |
2183 | return Qnil; | |
2184 | ||
60f0fb11 | 2185 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2186 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2187 | datagram_address[channel].len); | |
2188 | } | |
2189 | ||
2190 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2191 | 2, 2, 0, | |
2192 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2193 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2194 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2195 | { |
2196 | int channel; | |
2197 | int family, len; | |
2198 | ||
2199 | CHECK_PROCESS (process); | |
2200 | ||
2201 | if (!DATAGRAM_CONN_P (process)) | |
2202 | return Qnil; | |
2203 | ||
60f0fb11 | 2204 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2205 | |
2206 | len = get_lisp_to_sockaddr_size (address, &family); | |
2207 | if (datagram_address[channel].len != len) | |
2208 | return Qnil; | |
2209 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2210 | return address; | |
2211 | } | |
2212 | #endif | |
2213 | \f | |
2214 | ||
5e2327cf | 2215 | static const struct socket_options { |
e690ca94 | 2216 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2217 | name without SO_ prefix. */ |
fce70521 | 2218 | const char *name; |
e690ca94 KS |
2219 | /* Option level SOL_... */ |
2220 | int optlevel; | |
2221 | /* Option number SO_... */ | |
2222 | int optnum; | |
6b61353c KH |
2223 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2224 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2225 | } socket_options[] = |
2226 | { | |
2227 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2228 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2229 | #endif |
2230 | #ifdef SO_BROADCAST | |
6b61353c | 2231 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2232 | #endif |
2233 | #ifdef SO_DONTROUTE | |
6b61353c | 2234 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2235 | #endif |
2236 | #ifdef SO_KEEPALIVE | |
6b61353c | 2237 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2238 | #endif |
2239 | #ifdef SO_LINGER | |
6b61353c | 2240 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2241 | #endif |
2242 | #ifdef SO_OOBINLINE | |
6b61353c | 2243 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2244 | #endif |
2245 | #ifdef SO_PRIORITY | |
6b61353c | 2246 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2247 | #endif |
2248 | #ifdef SO_REUSEADDR | |
6b61353c | 2249 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2250 | #endif |
6b61353c | 2251 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2252 | }; |
2253 | ||
6b61353c | 2254 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2255 | |
6b61353c KH |
2256 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2257 | Signals an error if setting a known option fails. | |
2258 | */ | |
e690ca94 KS |
2259 | |
2260 | static int | |
d3da34e0 | 2261 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2262 | { |
6b61353c | 2263 | char *name; |
5e2327cf | 2264 | const struct socket_options *sopt; |
6b61353c | 2265 | int ret = 0; |
e690ca94 | 2266 | |
6b61353c | 2267 | CHECK_SYMBOL (opt); |
e690ca94 | 2268 | |
51b59d79 | 2269 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2270 | for (sopt = socket_options; sopt->name; sopt++) |
2271 | if (strcmp (name, sopt->name) == 0) | |
2272 | break; | |
e690ca94 | 2273 | |
6b61353c KH |
2274 | switch (sopt->opttype) |
2275 | { | |
2276 | case SOPT_BOOL: | |
2277 | { | |
2278 | int optval; | |
2279 | optval = NILP (val) ? 0 : 1; | |
2280 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2281 | &optval, sizeof (optval)); | |
2282 | break; | |
2283 | } | |
e690ca94 | 2284 | |
6b61353c KH |
2285 | case SOPT_INT: |
2286 | { | |
2287 | int optval; | |
d311d28c | 2288 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2289 | optval = XINT (val); |
2290 | else | |
2291 | error ("Bad option value for %s", name); | |
2292 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2293 | &optval, sizeof (optval)); | |
2294 | break; | |
2295 | } | |
e690ca94 | 2296 | |
6b61353c KH |
2297 | #ifdef SO_BINDTODEVICE |
2298 | case SOPT_IFNAME: | |
2299 | { | |
2300 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2301 | |
6b61353c KH |
2302 | /* This is broken, at least in the Linux 2.4 kernel. |
2303 | To unbind, the arg must be a zero integer, not the empty string. | |
2304 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2305 | memset (devname, 0, sizeof devname); |
6b61353c | 2306 | if (STRINGP (val)) |
e690ca94 | 2307 | { |
51b59d79 | 2308 | char *arg = SSDATA (val); |
6b61353c | 2309 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2310 | memcpy (devname, arg, len); |
e690ca94 | 2311 | } |
6b61353c KH |
2312 | else if (!NILP (val)) |
2313 | error ("Bad option value for %s", name); | |
2314 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2315 | devname, IFNAMSIZ); | |
2316 | break; | |
2317 | } | |
2318 | #endif | |
e690ca94 | 2319 | |
177c0ea7 | 2320 | #ifdef SO_LINGER |
6b61353c KH |
2321 | case SOPT_LINGER: |
2322 | { | |
2323 | struct linger linger; | |
e690ca94 | 2324 | |
6b61353c KH |
2325 | linger.l_onoff = 1; |
2326 | linger.l_linger = 0; | |
d311d28c | 2327 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2328 | linger.l_linger = XINT (val); |
2329 | else | |
2330 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2331 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2332 | &linger, sizeof (linger)); | |
2333 | break; | |
2334 | } | |
e690ca94 | 2335 | #endif |
6b61353c KH |
2336 | |
2337 | default: | |
2338 | return 0; | |
e690ca94 | 2339 | } |
6b61353c KH |
2340 | |
2341 | if (ret < 0) | |
2342 | report_file_error ("Cannot set network option", | |
2343 | Fcons (opt, Fcons (val, Qnil))); | |
2344 | return (1 << sopt->optbit); | |
e690ca94 KS |
2345 | } |
2346 | ||
6b61353c KH |
2347 | |
2348 | DEFUN ("set-network-process-option", | |
2349 | Fset_network_process_option, Sset_network_process_option, | |
2350 | 3, 4, 0, | |
2351 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2352 | See `make-network-process' for a list of options and values. | |
2353 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2354 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2355 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2356 | { |
6b61353c KH |
2357 | int s; |
2358 | struct Lisp_Process *p; | |
e690ca94 | 2359 | |
e690ca94 | 2360 | CHECK_PROCESS (process); |
6b61353c KH |
2361 | p = XPROCESS (process); |
2362 | if (!NETCONN1_P (p)) | |
2363 | error ("Process is not a network process"); | |
2364 | ||
60f0fb11 | 2365 | s = p->infd; |
6b61353c KH |
2366 | if (s < 0) |
2367 | error ("Process is not running"); | |
2368 | ||
2369 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2370 | { |
4d2b044c | 2371 | PSET (p, childp, Fplist_put (p->childp, option, value)); |
6b61353c | 2372 | return Qt; |
e690ca94 | 2373 | } |
6b61353c KH |
2374 | |
2375 | if (NILP (no_error)) | |
2376 | error ("Unknown or unsupported option"); | |
2377 | ||
2378 | return Qnil; | |
e690ca94 | 2379 | } |
6b61353c | 2380 | |
e690ca94 | 2381 | \f |
d888760c GM |
2382 | DEFUN ("serial-process-configure", |
2383 | Fserial_process_configure, | |
2384 | Sserial_process_configure, | |
2385 | 0, MANY, 0, | |
2386 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2387 | ||
2388 | Arguments are specified as keyword/argument pairs. Attributes that | |
2389 | are not given are re-initialized from the process's current | |
2390 | configuration (available via the function `process-contact') or set to | |
2391 | reasonable default values. The following arguments are defined: | |
2392 | ||
2393 | :process PROCESS | |
2394 | :name NAME | |
2395 | :buffer BUFFER | |
2396 | :port PORT | |
2397 | -- Any of these arguments can be given to identify the process that is | |
2398 | to be configured. If none of these arguments is given, the current | |
2399 | buffer's process is used. | |
2400 | ||
2401 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2402 | second, also called baud rate. Any value can be given for SPEED, but | |
2403 | most serial ports work only at a few defined values between 1200 and | |
2404 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2405 | serial port is not configured any further, i.e., all other arguments | |
2406 | are ignored. This may be useful for special serial ports such as | |
2407 | Bluetooth-to-serial converters which can only be configured through AT | |
2408 | commands. A value of nil for SPEED can be used only when passed | |
2409 | through `make-serial-process' or `serial-term'. | |
2410 | ||
2411 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2412 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2413 | ||
2414 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2415 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2416 | PARITY is not given, no parity is used. | |
2417 | ||
2418 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2419 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2420 | is not given or nil, 1 stopbit is used. | |
2421 | ||
2422 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2423 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2424 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2425 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2426 | flowcontrol is used. | |
2427 | ||
2428 | `serial-process-configure' is called by `make-serial-process' for the | |
2429 | initial configuration of the serial port. | |
2430 | ||
2431 | Examples: | |
2432 | ||
2433 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2434 | ||
2435 | \(serial-process-configure | |
2436 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2437 | ||
2438 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2439 | ||
2440 | usage: (serial-process-configure &rest ARGS) */) | |
f66c7cf8 | 2441 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2442 | { |
2443 | struct Lisp_Process *p; | |
2444 | Lisp_Object contact = Qnil; | |
2445 | Lisp_Object proc = Qnil; | |
2446 | struct gcpro gcpro1; | |
2447 | ||
2448 | contact = Flist (nargs, args); | |
2449 | GCPRO1 (contact); | |
2450 | ||
2451 | proc = Fplist_get (contact, QCprocess); | |
2452 | if (NILP (proc)) | |
2453 | proc = Fplist_get (contact, QCname); | |
2454 | if (NILP (proc)) | |
2455 | proc = Fplist_get (contact, QCbuffer); | |
2456 | if (NILP (proc)) | |
2457 | proc = Fplist_get (contact, QCport); | |
2458 | proc = get_process (proc); | |
2459 | p = XPROCESS (proc); | |
4d2b044c | 2460 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2461 | error ("Not a serial process"); |
2462 | ||
4d2b044c | 2463 | if (NILP (Fplist_get (p->childp, QCspeed))) |
d888760c GM |
2464 | { |
2465 | UNGCPRO; | |
2466 | return Qnil; | |
2467 | } | |
2468 | ||
2469 | serial_configure (p, contact); | |
2470 | ||
2471 | UNGCPRO; | |
2472 | return Qnil; | |
2473 | } | |
d888760c | 2474 | |
d888760c | 2475 | /* Used by make-serial-process to recover from errors. */ |
b766f867 PE |
2476 | static Lisp_Object |
2477 | make_serial_process_unwind (Lisp_Object proc) | |
d888760c GM |
2478 | { |
2479 | if (!PROCESSP (proc)) | |
2480 | abort (); | |
2481 | remove_process (proc); | |
2482 | return Qnil; | |
2483 | } | |
d888760c | 2484 | |
d888760c GM |
2485 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2486 | 0, MANY, 0, | |
2487 | doc: /* Create and return a serial port process. | |
2488 | ||
2489 | In Emacs, serial port connections are represented by process objects, | |
2490 | so input and output work as for subprocesses, and `delete-process' | |
2491 | closes a serial port connection. However, a serial process has no | |
2492 | process id, it cannot be signaled, and the status codes are different | |
2493 | from normal processes. | |
2494 | ||
2495 | `make-serial-process' creates a process and a buffer, on which you | |
2496 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2497 | an interactive terminal. See below for examples. | |
2498 | ||
2499 | Arguments are specified as keyword/argument pairs. The following | |
2500 | arguments are defined: | |
2501 | ||
2502 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2503 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2504 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2505 | the backslashes in strings). | |
2506 | ||
2507 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
4373fd43 | 2508 | which this function calls. |
d888760c GM |
2509 | |
2510 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2511 | the value of PORT is used. | |
2512 | ||
2513 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2514 | with the process. Process output goes at the end of that buffer, | |
2515 | unless you specify an output stream or filter function to handle the | |
2516 | output. If BUFFER is not given, the value of NAME is used. | |
2517 | ||
2518 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2519 | system used for both reading and writing for this process. If CODING | |
2520 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2521 | ENCODING is used for writing. | |
2522 | ||
2523 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2524 | the process is running. If BOOL is not given, query before exiting. | |
2525 | ||
2526 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2527 | In the stopped state, a serial process does not accept incoming data, | |
2528 | but you can send outgoing data. The stopped state is cleared by | |
2529 | `continue-process' and set by `stop-process'. | |
2530 | ||
2531 | :filter FILTER -- Install FILTER as the process filter. | |
2532 | ||
2533 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2534 | ||
2535 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2536 | ||
d888760c GM |
2537 | :bytesize |
2538 | :parity | |
2539 | :stopbits | |
2540 | :flowcontrol | |
4373fd43 GM |
2541 | -- This function calls `serial-process-configure' to handle these |
2542 | arguments. | |
d888760c GM |
2543 | |
2544 | The original argument list, possibly modified by later configuration, | |
2545 | is available via the function `process-contact'. | |
2546 | ||
2547 | Examples: | |
2548 | ||
2549 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2550 | ||
2551 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2552 | ||
2553 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2554 | ||
2555 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2556 | ||
2557 | usage: (make-serial-process &rest ARGS) */) | |
f66c7cf8 | 2558 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2559 | { |
2560 | int fd = -1; | |
2561 | Lisp_Object proc, contact, port; | |
2562 | struct Lisp_Process *p; | |
2563 | struct gcpro gcpro1; | |
2564 | Lisp_Object name, buffer; | |
2565 | Lisp_Object tem, val; | |
d311d28c | 2566 | ptrdiff_t specpdl_count = -1; |
d888760c GM |
2567 | |
2568 | if (nargs == 0) | |
2569 | return Qnil; | |
2570 | ||
2571 | contact = Flist (nargs, args); | |
2572 | GCPRO1 (contact); | |
2573 | ||
2574 | port = Fplist_get (contact, QCport); | |
2575 | if (NILP (port)) | |
2576 | error ("No port specified"); | |
2577 | CHECK_STRING (port); | |
2578 | ||
2579 | if (NILP (Fplist_member (contact, QCspeed))) | |
2580 | error (":speed not specified"); | |
2581 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2582 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2583 | ||
2584 | name = Fplist_get (contact, QCname); | |
2585 | if (NILP (name)) | |
2586 | name = port; | |
2587 | CHECK_STRING (name); | |
2588 | proc = make_process (name); | |
2589 | specpdl_count = SPECPDL_INDEX (); | |
2590 | record_unwind_protect (make_serial_process_unwind, proc); | |
2591 | p = XPROCESS (proc); | |
2592 | ||
51b59d79 | 2593 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2594 | p->infd = fd; |
2595 | p->outfd = fd; | |
2596 | if (fd > max_process_desc) | |
2597 | max_process_desc = fd; | |
2598 | chan_process[fd] = proc; | |
2599 | ||
2600 | buffer = Fplist_get (contact, QCbuffer); | |
2601 | if (NILP (buffer)) | |
2602 | buffer = name; | |
2603 | buffer = Fget_buffer_create (buffer); | |
21238f11 DA |
2604 | PSET (p, buffer, buffer); |
2605 | ||
2606 | PSET (p, childp, contact); | |
2607 | PSET (p, plist, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
2608 | PSET (p, type, Qserial); | |
2609 | PSET (p, sentinel, Fplist_get (contact, QCsentinel)); | |
2610 | PSET (p, filter, Fplist_get (contact, QCfilter)); | |
2611 | PSET (p, log, Qnil); | |
d888760c GM |
2612 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
2613 | p->kill_without_query = 1; | |
2614 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
21238f11 | 2615 | PSET (p, command, Qt); |
d888760c GM |
2616 | p->pty_flag = 0; |
2617 | ||
4d2b044c | 2618 | if (!EQ (p->command, Qt)) |
d888760c GM |
2619 | { |
2620 | FD_SET (fd, &input_wait_mask); | |
2621 | FD_SET (fd, &non_keyboard_wait_mask); | |
2622 | } | |
2623 | ||
2624 | if (BUFFERP (buffer)) | |
2625 | { | |
4d2b044c | 2626 | set_marker_both (p->mark, buffer, |
d888760c GM |
2627 | BUF_ZV (XBUFFER (buffer)), |
2628 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2629 | } | |
2630 | ||
2631 | tem = Fplist_member (contact, QCcoding); | |
2632 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2633 | tem = Qnil; | |
2634 | ||
2635 | val = Qnil; | |
2636 | if (!NILP (tem)) | |
2637 | { | |
2638 | val = XCAR (XCDR (tem)); | |
2639 | if (CONSP (val)) | |
2640 | val = XCAR (val); | |
2641 | } | |
2642 | else if (!NILP (Vcoding_system_for_read)) | |
2643 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2644 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2645 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2646 | val = Qnil; |
21238f11 | 2647 | PSET (p, decode_coding_system, val); |
d888760c GM |
2648 | |
2649 | val = Qnil; | |
2650 | if (!NILP (tem)) | |
2651 | { | |
2652 | val = XCAR (XCDR (tem)); | |
2653 | if (CONSP (val)) | |
2654 | val = XCDR (val); | |
2655 | } | |
2656 | else if (!NILP (Vcoding_system_for_write)) | |
2657 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2658 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2659 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2660 | val = Qnil; |
21238f11 | 2661 | PSET (p, encode_coding_system, val); |
d888760c GM |
2662 | |
2663 | setup_process_coding_systems (proc); | |
21238f11 | 2664 | PSET (p, decoding_buf, empty_unibyte_string); |
d888760c | 2665 | p->decoding_carryover = 0; |
21238f11 | 2666 | PSET (p, encoding_buf, empty_unibyte_string); |
d888760c GM |
2667 | p->inherit_coding_system_flag |
2668 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2669 | ||
ed3751c8 | 2670 | Fserial_process_configure (nargs, args); |
d888760c GM |
2671 | |
2672 | specpdl_ptr = specpdl + specpdl_count; | |
2673 | ||
2674 | UNGCPRO; | |
2675 | return proc; | |
2676 | } | |
d888760c | 2677 | |
e690ca94 KS |
2678 | /* Create a network stream/datagram client/server process. Treated |
2679 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2680 | differences are in status display and process deletion. A network |
2681 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2682 | stop/continue it and deactivate/close it via delete-process */ |
2683 | ||
177c0ea7 JB |
2684 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2685 | 0, MANY, 0, | |
e690ca94 KS |
2686 | doc: /* Create and return a network server or client process. |
2687 | ||
fa9d4315 | 2688 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2689 | input and output work as for subprocesses and `delete-process' closes |
2690 | a network connection. However, a network process has no process id, | |
d22426e1 | 2691 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2692 | processes. |
2693 | ||
2694 | Arguments are specified as keyword/argument pairs. The following | |
2695 | arguments are defined: | |
2696 | ||
2697 | :name NAME -- NAME is name for process. It is modified if necessary | |
2698 | to make it unique. | |
2699 | ||
2700 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2701 | with the process. Process output goes at end of that buffer, unless | |
2702 | you specify an output stream or filter function to handle the output. | |
2703 | BUFFER may be also nil, meaning that this process is not associated | |
2704 | with any buffer. | |
2705 | ||
2706 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2707 | address. The symbol `local' specifies the local host. If specified | |
2708 | for a server process, it must be a valid name or address for the local | |
2709 | host, and only clients connecting to that address will be accepted. | |
2710 | ||
2711 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2712 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2713 | a random port number is selected for the server. (If Emacs was |
2714 | compiled with getaddrinfo, a port number can also be specified as a | |
2715 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2716 | |
9057ff80 | 2717 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2718 | stream type connection, `datagram' creates a datagram type connection, |
2719 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2720 | |
e690ca94 | 2721 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2722 | service specified by HOST and SERVICE. The default (nil) is to use |
2723 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2724 | and port number specified by HOST and SERVICE. Other address families | |
2725 | supported are: | |
e690ca94 | 2726 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2727 | ipv4 -- use IPv4 address family only. |
2728 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2729 | |
2730 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2731 | This parameter is ignored when opening a client process. When specified | |
2732 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2733 | ||
2734 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2735 | connection. This parameter is ignored when opening a stream server | |
2736 | process. For a datagram server process, it specifies the initial | |
2737 | setting of the remote datagram address. When specified for a client | |
2738 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2739 | ||
2740 | The format of ADDRESS depends on the address family: | |
2741 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2742 | corresponding to numeric IP address A.B.C.D and port number P. | |
2743 | - A local address is represented as a string with the address in the | |
2744 | local address space. | |
2745 | - An "unsupported family" address is represented by a cons (F . AV) | |
2746 | where F is the family number and AV is a vector containing the socket | |
2747 | address data with one element per address data byte. Do not rely on | |
2748 | this format in portable code, as it may depend on implementation | |
2749 | defined constants, data sizes, and data structure alignment. | |
2750 | ||
6b61353c KH |
2751 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2752 | system used for both reading and writing for this process. If CODING | |
2753 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2754 | ENCODING is used for writing. | |
e690ca94 KS |
2755 | |
2756 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2757 | return without waiting for the connection to complete; instead, the | |
2758 | sentinel function will be called with second arg matching "open" (if | |
2759 | successful) or "failed" when the connect completes. Default is to use | |
2760 | a blocking connect (i.e. wait) for stream type connections. | |
2761 | ||
2762 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2763 | running when Emacs is exited. |
e690ca94 KS |
2764 | |
2765 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2766 | In the stopped state, a server process does not accept new | |
2767 | connections, and a client process does not handle incoming traffic. | |
2768 | The stopped state is cleared by `continue-process' and set by | |
2769 | `stop-process'. | |
2770 | ||
2771 | :filter FILTER -- Install FILTER as the process filter. | |
2772 | ||
7392e23c KS |
2773 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2774 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2775 | If this keyword is not specified, the strings are multibyte if |
016a35df | 2776 | the default value of `enable-multibyte-characters' is non-nil. |
03f04413 | 2777 | |
e690ca94 KS |
2778 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2779 | ||
2780 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2781 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2782 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2783 | is the server process, CLIENT is the new process for the connection, | |
2784 | and MESSAGE is a string. | |
2785 | ||
faa7db08 | 2786 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2787 | |
6b61353c | 2788 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2789 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2790 | If QLEN is an integer, it is used as the max. length of the server's |
2791 | pending connection queue (also known as the backlog); the default | |
2792 | queue length is 5. Default is to create a client process. | |
2793 | ||
2794 | The following network options can be specified for this connection: | |
2795 | ||
2796 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2797 | :dontroute BOOL -- Only send to directly connected hosts. | |
2798 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2799 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2800 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2801 | :priority INT -- Set protocol defined priority for sent packets. | |
2802 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2803 | (this is allowed by default for a server process). | |
2804 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2805 | special privileges on some systems. | |
2806 | ||
2807 | Consult the relevant system programmer's manual pages for more | |
2808 | information on using these options. | |
2809 | ||
2810 | ||
2811 | A server process will listen for and accept connections from clients. | |
2812 | When a client connection is accepted, a new network process is created | |
2813 | for the connection with the following parameters: | |
e690ca94 | 2814 | |
e690ca94 KS |
2815 | - The client's process name is constructed by concatenating the server |
2816 | process' NAME and a client identification string. | |
2817 | - If the FILTER argument is non-nil, the client process will not get a | |
2818 | separate process buffer; otherwise, the client's process buffer is a newly | |
2819 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2820 | NAME concatenated with the client identification string. |
e690ca94 KS |
2821 | - The connection type and the process filter and sentinel parameters are |
2822 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2823 | - The client process' contact info is set according to the client's | |
2824 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2825 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2826 | |
2827 | Notice that the FILTER and SENTINEL args are never used directly by | |
2828 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2829 | the server process, but via the optional :log function, accepted (and |
2830 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2831 | |
365aee82 KS |
2832 | The original argument list, modified with the actual connection |
2833 | information, is available via the `process-contact' function. | |
365aee82 | 2834 | |
fa9d4315 | 2835 | usage: (make-network-process &rest ARGS) */) |
f66c7cf8 | 2836 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 JB |
2837 | { |
2838 | Lisp_Object proc; | |
e690ca94 KS |
2839 | Lisp_Object contact; |
2840 | struct Lisp_Process *p; | |
70dbdb36 | 2841 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2842 | struct addrinfo ai, *res, *lres; |
e1652a86 | 2843 | struct addrinfo hints; |
8ea90aa3 DN |
2844 | const char *portstring; |
2845 | char portbuf[128]; | |
70dbdb36 | 2846 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2847 | struct _emacs_addrinfo |
2848 | { | |
2849 | int ai_family; | |
2850 | int ai_socktype; | |
2851 | int ai_protocol; | |
2852 | int ai_addrlen; | |
2853 | struct sockaddr *ai_addr; | |
2854 | struct _emacs_addrinfo *ai_next; | |
2855 | } ai, *res, *lres; | |
418b48fd | 2856 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2857 | struct sockaddr_in address_in; |
2858 | #ifdef HAVE_LOCAL_SOCKETS | |
2859 | struct sockaddr_un address_un; | |
2860 | #endif | |
2861 | int port; | |
dd2a17ab KS |
2862 | int ret = 0; |
2863 | int xerrno = 0; | |
418b48fd | 2864 | int s = -1, outch, inch; |
e690ca94 | 2865 | struct gcpro gcpro1; |
d311d28c PE |
2866 | ptrdiff_t count = SPECPDL_INDEX (); |
2867 | ptrdiff_t count1; | |
e690ca94 KS |
2868 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2869 | Lisp_Object tem; | |
2870 | Lisp_Object name, buffer, host, service, address; | |
2871 | Lisp_Object filter, sentinel; | |
2872 | int is_non_blocking_client = 0; | |
6b61353c | 2873 | int is_server = 0, backlog = 5; |
9057ff80 | 2874 | int socktype; |
e690ca94 KS |
2875 | int family = -1; |
2876 | ||
2877 | if (nargs == 0) | |
2878 | return Qnil; | |
dd2a17ab | 2879 | |
e690ca94 KS |
2880 | /* Save arguments for process-contact and clone-process. */ |
2881 | contact = Flist (nargs, args); | |
2882 | GCPRO1 (contact); | |
2883 | ||
bff3ed0a RS |
2884 | #ifdef WINDOWSNT |
2885 | /* Ensure socket support is loaded if available. */ | |
2886 | init_winsock (TRUE); | |
2887 | #endif | |
2888 | ||
9057ff80 KS |
2889 | /* :type TYPE (nil: stream, datagram */ |
2890 | tem = Fplist_get (contact, QCtype); | |
2891 | if (NILP (tem)) | |
2892 | socktype = SOCK_STREAM; | |
2893 | #ifdef DATAGRAM_SOCKETS | |
2894 | else if (EQ (tem, Qdatagram)) | |
2895 | socktype = SOCK_DGRAM; | |
f00c449b SM |
2896 | #endif |
2897 | #ifdef HAVE_SEQPACKET | |
2898 | else if (EQ (tem, Qseqpacket)) | |
2899 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 2900 | #endif |
9057ff80 KS |
2901 | else |
2902 | error ("Unsupported connection type"); | |
e690ca94 KS |
2903 | |
2904 | /* :server BOOL */ | |
2905 | tem = Fplist_get (contact, QCserver); | |
2906 | if (!NILP (tem)) | |
2907 | { | |
75728599 JR |
2908 | /* Don't support network sockets when non-blocking mode is |
2909 | not available, since a blocked Emacs is not useful. */ | |
5e617bc2 | 2910 | #if !defined (O_NONBLOCK) && !defined (O_NDELAY) |
e690ca94 KS |
2911 | error ("Network servers not supported"); |
2912 | #else | |
2913 | is_server = 1; | |
d311d28c | 2914 | if (TYPE_RANGED_INTEGERP (int, tem)) |
6b61353c | 2915 | backlog = XINT (tem); |
e690ca94 KS |
2916 | #endif |
2917 | } | |
2918 | ||
2919 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2920 | QCaddress = is_server ? QClocal : QCremote; | |
2921 | ||
d7e344cd | 2922 | /* :nowait BOOL */ |
84b31826 | 2923 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
2924 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
2925 | { | |
2926 | #ifndef NON_BLOCKING_CONNECT | |
2927 | error ("Non-blocking connect not supported"); | |
2928 | #else | |
2929 | is_non_blocking_client = 1; | |
2930 | #endif | |
2931 | } | |
2932 | ||
2933 | name = Fplist_get (contact, QCname); | |
2934 | buffer = Fplist_get (contact, QCbuffer); | |
2935 | filter = Fplist_get (contact, QCfilter); | |
2936 | sentinel = Fplist_get (contact, QCsentinel); | |
2937 | ||
b7826503 | 2938 | CHECK_STRING (name); |
e690ca94 | 2939 | |
e690ca94 KS |
2940 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
2941 | ai.ai_socktype = socktype; | |
2942 | ai.ai_protocol = 0; | |
2943 | ai.ai_next = NULL; | |
2944 | res = &ai; | |
a319f7c1 | 2945 | |
e690ca94 KS |
2946 | /* :local ADDRESS or :remote ADDRESS */ |
2947 | address = Fplist_get (contact, QCaddress); | |
2948 | if (!NILP (address)) | |
a319f7c1 | 2949 | { |
e690ca94 KS |
2950 | host = service = Qnil; |
2951 | ||
2952 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2953 | error ("Malformed :address"); | |
2954 | ai.ai_family = family; | |
2955 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2956 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2957 | goto open_socket; | |
a319f7c1 | 2958 | } |
e690ca94 KS |
2959 | |
2960 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2961 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 2962 | if (NILP (tem)) |
a319f7c1 | 2963 | { |
5e617bc2 | 2964 | #if defined (HAVE_GETADDRINFO) && defined (AF_INET6) |
e1652a86 KS |
2965 | family = AF_UNSPEC; |
2966 | #else | |
2967 | family = AF_INET; | |
e690ca94 | 2968 | #endif |
a319f7c1 | 2969 | } |
e1652a86 KS |
2970 | #ifdef HAVE_LOCAL_SOCKETS |
2971 | else if (EQ (tem, Qlocal)) | |
2972 | family = AF_LOCAL; | |
2973 | #endif | |
2974 | #ifdef AF_INET6 | |
2975 | else if (EQ (tem, Qipv6)) | |
2976 | family = AF_INET6; | |
2977 | #endif | |
2978 | else if (EQ (tem, Qipv4)) | |
2979 | family = AF_INET; | |
d311d28c | 2980 | else if (TYPE_RANGED_INTEGERP (int, tem)) |
e1652a86 KS |
2981 | family = XINT (tem); |
2982 | else | |
e690ca94 | 2983 | error ("Unknown address family"); |
e1652a86 | 2984 | |
e690ca94 KS |
2985 | ai.ai_family = family; |
2986 | ||
2987 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2988 | service = Fplist_get (contact, QCservice); | |
2989 | ||
66a9f7f4 SM |
2990 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
2991 | host = Fplist_get (contact, QChost); | |
2992 | if (!NILP (host)) | |
2993 | { | |
2994 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
2995 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
2996 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
2997 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
2998 | CHECK_STRING (host); |
2999 | } | |
3000 | ||
e690ca94 KS |
3001 | #ifdef HAVE_LOCAL_SOCKETS |
3002 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3003 | { |
66a9f7f4 SM |
3004 | if (!NILP (host)) |
3005 | { | |
3006 | message (":family local ignores the :host \"%s\" property", | |
3007 | SDATA (host)); | |
3008 | contact = Fplist_put (contact, QChost, Qnil); | |
3009 | host = Qnil; | |
3010 | } | |
b7826503 | 3011 | CHECK_STRING (service); |
72af86bd | 3012 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3013 | address_un.sun_family = AF_LOCAL; |
e99a530f PE |
3014 | if (sizeof address_un.sun_path <= SBYTES (service)) |
3015 | error ("Service name too long"); | |
3016 | strcpy (address_un.sun_path, SSDATA (service)); | |
e690ca94 KS |
3017 | ai.ai_addr = (struct sockaddr *) &address_un; |
3018 | ai.ai_addrlen = sizeof address_un; | |
3019 | goto open_socket; | |
d0d6b7c5 | 3020 | } |
e690ca94 | 3021 | #endif |
a319f7c1 | 3022 | |
798b64bb KH |
3023 | /* Slow down polling to every ten seconds. |
3024 | Some kernels have a bug which causes retrying connect to fail | |
3025 | after a connect. Polling can interfere with gethostbyname too. */ | |
3026 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3027 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3028 | { |
3029 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3030 | bind_polling_period (10); | |
3031 | } | |
798b64bb KH |
3032 | #endif |
3033 | ||
a319f7c1 | 3034 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3035 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3036 | Otherwise, use getservbyname to lookup the service. */ | |
3037 | if (!NILP (host)) | |
3038 | { | |
3039 | ||
3040 | /* SERVICE can either be a string or int. | |
3041 | Convert to a C string for later use by getaddrinfo. */ | |
3042 | if (EQ (service, Qt)) | |
3043 | portstring = "0"; | |
3044 | else if (INTEGERP (service)) | |
3045 | { | |
c2982e87 | 3046 | sprintf (portbuf, "%"pI"d", XINT (service)); |
e690ca94 KS |
3047 | portstring = portbuf; |
3048 | } | |
3049 | else | |
3050 | { | |
3051 | CHECK_STRING (service); | |
42a5b22f | 3052 | portstring = SSDATA (service); |
e690ca94 KS |
3053 | } |
3054 | ||
3055 | immediate_quit = 1; | |
3056 | QUIT; | |
3057 | memset (&hints, 0, sizeof (hints)); | |
3058 | hints.ai_flags = 0; | |
e1652a86 | 3059 | hints.ai_family = family; |
e690ca94 KS |
3060 | hints.ai_socktype = socktype; |
3061 | hints.ai_protocol = 0; | |
08116b48 CY |
3062 | |
3063 | #ifdef HAVE_RES_INIT | |
3064 | res_init (); | |
3065 | #endif | |
3066 | ||
42a5b22f | 3067 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3068 | if (ret) |
f6270f62 | 3069 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3070 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3071 | #else |
42a5b22f | 3072 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3073 | #endif |
e690ca94 | 3074 | immediate_quit = 0; |
a319f7c1 | 3075 | |
e690ca94 KS |
3076 | goto open_socket; |
3077 | } | |
3078 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3079 | |
e690ca94 KS |
3080 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3081 | has been specified (e.g. for a local server process). */ | |
3082 | ||
3083 | if (EQ (service, Qt)) | |
3084 | port = 0; | |
3085 | else if (INTEGERP (service)) | |
3086 | port = htons ((unsigned short) XINT (service)); | |
3087 | else | |
616da37c | 3088 | { |
e690ca94 KS |
3089 | struct servent *svc_info; |
3090 | CHECK_STRING (service); | |
42a5b22f | 3091 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3092 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3093 | if (svc_info == 0) | |
d5db4077 | 3094 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3095 | port = svc_info->s_port; |
3096 | } | |
3097 | ||
72af86bd | 3098 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3099 | address_in.sin_family = family; |
3100 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3101 | address_in.sin_port = port; | |
3102 | ||
3103 | #ifndef HAVE_GETADDRINFO | |
3104 | if (!NILP (host)) | |
3105 | { | |
3106 | struct hostent *host_info_ptr; | |
3107 | ||
c5e87d10 | 3108 | /* gethostbyname may fail with TRY_AGAIN, but we don't honor that, |
f3d9532b | 3109 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3110 | immediate_quit = 1; |
3111 | QUIT; | |
08116b48 CY |
3112 | |
3113 | #ifdef HAVE_RES_INIT | |
3114 | res_init (); | |
3115 | #endif | |
3116 | ||
d5db4077 | 3117 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3118 | immediate_quit = 0; |
177c0ea7 | 3119 | |
e690ca94 KS |
3120 | if (host_info_ptr) |
3121 | { | |
72af86bd AS |
3122 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3123 | host_info_ptr->h_length); | |
e690ca94 KS |
3124 | family = host_info_ptr->h_addrtype; |
3125 | address_in.sin_family = family; | |
3126 | } | |
3127 | else | |
3128 | /* Attempt to interpret host as numeric inet address */ | |
3129 | { | |
4624371d | 3130 | unsigned long numeric_addr; |
51b59d79 | 3131 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3132 | if (numeric_addr == -1) |
d5db4077 | 3133 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3134 | |
72af86bd AS |
3135 | memcpy (&address_in.sin_addr, &numeric_addr, |
3136 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3137 | } |
d0d6b7c5 | 3138 | |
e690ca94 | 3139 | } |
dd2a17ab | 3140 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3141 | |
e690ca94 KS |
3142 | ai.ai_family = family; |
3143 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3144 | ai.ai_addrlen = sizeof address_in; | |
3145 | ||
3146 | open_socket: | |
3147 | ||
dd2a17ab | 3148 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3149 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3150 | s = -1; |
457a9bee | 3151 | |
dd2a17ab KS |
3152 | for (lres = res; lres; lres = lres->ai_next) |
3153 | { | |
f66c7cf8 | 3154 | ptrdiff_t optn; |
c5101a77 | 3155 | int optbits; |
6b61353c | 3156 | |
4dc343ee | 3157 | #ifdef WINDOWSNT |
649dbf36 | 3158 | retry_connect: |
4dc343ee | 3159 | #endif |
649dbf36 | 3160 | |
dd2a17ab KS |
3161 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3162 | if (s < 0) | |
3163 | { | |
3164 | xerrno = errno; | |
3165 | continue; | |
3166 | } | |
0f2ee0c1 | 3167 | |
e690ca94 KS |
3168 | #ifdef DATAGRAM_SOCKETS |
3169 | if (!is_server && socktype == SOCK_DGRAM) | |
3170 | break; | |
3171 | #endif /* DATAGRAM_SOCKETS */ | |
3172 | ||
dd2a17ab | 3173 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3174 | if (is_non_blocking_client) |
dd2a17ab KS |
3175 | { |
3176 | #ifdef O_NONBLOCK | |
3177 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3178 | #else | |
3179 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3180 | #endif | |
3181 | if (ret < 0) | |
3182 | { | |
3183 | xerrno = errno; | |
3184 | emacs_close (s); | |
3185 | s = -1; | |
3186 | continue; | |
3187 | } | |
3188 | } | |
3189 | #endif | |
177c0ea7 | 3190 | |
dd2a17ab | 3191 | /* Make us close S if quit. */ |
dd2a17ab KS |
3192 | record_unwind_protect (close_file_unwind, make_number (s)); |
3193 | ||
6b61353c KH |
3194 | /* Parse network options in the arg list. |
3195 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3196 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3197 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3198 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3199 | ||
e690ca94 KS |
3200 | if (is_server) |
3201 | { | |
3202 | /* Configure as a server socket. */ | |
6b61353c KH |
3203 | |
3204 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3205 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3206 | #ifdef HAVE_LOCAL_SOCKETS |
3207 | if (family != AF_LOCAL) | |
3208 | #endif | |
6b61353c KH |
3209 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3210 | { | |
3211 | int optval = 1; | |
3212 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3213 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3214 | } | |
177c0ea7 | 3215 | |
e690ca94 KS |
3216 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3217 | report_file_error ("Cannot bind server socket", Qnil); | |
3218 | ||
3219 | #ifdef HAVE_GETSOCKNAME | |
3220 | if (EQ (service, Qt)) | |
3221 | { | |
3222 | struct sockaddr_in sa1; | |
401bf9b4 | 3223 | socklen_t len1 = sizeof (sa1); |
e690ca94 KS |
3224 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3225 | { | |
3226 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3227 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3228 | contact = Fplist_put (contact, QCservice, service); |
3229 | } | |
3230 | } | |
3231 | #endif | |
3232 | ||
84b31826 | 3233 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3234 | report_file_error ("Cannot listen on server socket", Qnil); |
3235 | ||
3236 | break; | |
3237 | } | |
3238 | ||
dd2a17ab KS |
3239 | immediate_quit = 1; |
3240 | QUIT; | |
3241 | ||
dd2a17ab KS |
3242 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3243 | xerrno = errno; | |
3244 | ||
dd2a17ab KS |
3245 | if (ret == 0 || xerrno == EISCONN) |
3246 | { | |
dd2a17ab KS |
3247 | /* The unwind-protect will be discarded afterwards. |
3248 | Likewise for immediate_quit. */ | |
3249 | break; | |
3250 | } | |
3251 | ||
3252 | #ifdef NON_BLOCKING_CONNECT | |
3253 | #ifdef EINPROGRESS | |
e690ca94 | 3254 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3255 | break; |
3256 | #else | |
3257 | #ifdef EWOULDBLOCK | |
e690ca94 | 3258 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3259 | break; |
3260 | #endif | |
3261 | #endif | |
3262 | #endif | |
649dbf36 CY |
3263 | |
3264 | #ifndef WINDOWSNT | |
cd591dbc HE |
3265 | if (xerrno == EINTR) |
3266 | { | |
3267 | /* Unlike most other syscalls connect() cannot be called | |
3268 | again. (That would return EALREADY.) The proper way to | |
d35af63c | 3269 | wait for completion is pselect(). */ |
401bf9b4 PE |
3270 | int sc; |
3271 | socklen_t len; | |
cd591dbc HE |
3272 | SELECT_TYPE fdset; |
3273 | retry_select: | |
3274 | FD_ZERO (&fdset); | |
3275 | FD_SET (s, &fdset); | |
3276 | QUIT; | |
d35af63c | 3277 | sc = pselect (s + 1, NULL, &fdset, NULL, NULL, NULL); |
cd591dbc HE |
3278 | if (sc == -1) |
3279 | { | |
649dbf36 | 3280 | if (errno == EINTR) |
cd591dbc | 3281 | goto retry_select; |
649dbf36 | 3282 | else |
cd591dbc HE |
3283 | report_file_error ("select failed", Qnil); |
3284 | } | |
3285 | eassert (sc > 0); | |
649dbf36 CY |
3286 | |
3287 | len = sizeof xerrno; | |
3288 | eassert (FD_ISSET (s, &fdset)); | |
3289 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3290 | report_file_error ("getsockopt failed", Qnil); | |
3291 | if (xerrno) | |
3292 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3293 | else | |
3294 | break; | |
cd591dbc | 3295 | } |
649dbf36 | 3296 | #endif /* !WINDOWSNT */ |
e333e864 | 3297 | |
0f2ee0c1 RS |
3298 | immediate_quit = 0; |
3299 | ||
dd2a17ab | 3300 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3301 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3302 | emacs_close (s); |
dd2a17ab | 3303 | s = -1; |
649dbf36 CY |
3304 | |
3305 | #ifdef WINDOWSNT | |
3306 | if (xerrno == EINTR) | |
3307 | goto retry_connect; | |
3308 | #endif | |
dd2a17ab | 3309 | } |
457a9bee | 3310 | |
e690ca94 KS |
3311 | if (s >= 0) |
3312 | { | |
3313 | #ifdef DATAGRAM_SOCKETS | |
3314 | if (socktype == SOCK_DGRAM) | |
3315 | { | |
3316 | if (datagram_address[s].sa) | |
3317 | abort (); | |
23f86fce | 3318 | datagram_address[s].sa = xmalloc (lres->ai_addrlen); |
e690ca94 KS |
3319 | datagram_address[s].len = lres->ai_addrlen; |
3320 | if (is_server) | |
3321 | { | |
3322 | Lisp_Object remote; | |
72af86bd | 3323 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3324 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3325 | { | |
3326 | int rfamily, rlen; | |
3327 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3328 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3329 | conv_lisp_to_sockaddr (rfamily, remote, | |
3330 | datagram_address[s].sa, rlen); | |
3331 | } | |
3332 | } | |
3333 | else | |
72af86bd | 3334 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3335 | } |
3336 | #endif | |
177c0ea7 | 3337 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3338 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3339 | #ifdef HAVE_GETSOCKNAME |
3340 | if (!is_server) | |
3341 | { | |
3342 | struct sockaddr_in sa1; | |
401bf9b4 | 3343 | socklen_t len1 = sizeof (sa1); |
2185db04 KS |
3344 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3345 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3346 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3347 | } |
3348 | #endif | |
e690ca94 KS |
3349 | } |
3350 | ||
54b3b62f YM |
3351 | immediate_quit = 0; |
3352 | ||
dd2a17ab | 3353 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3354 | if (res != &ai) |
54b3b62f YM |
3355 | { |
3356 | BLOCK_INPUT; | |
3357 | freeaddrinfo (res); | |
3358 | UNBLOCK_INPUT; | |
3359 | } | |
dd2a17ab KS |
3360 | #endif |
3361 | ||
e690ca94 KS |
3362 | /* Discard the unwind protect for closing S, if any. */ |
3363 | specpdl_ptr = specpdl + count1; | |
3364 | ||
3365 | /* Unwind bind_polling_period and request_sigio. */ | |
3366 | unbind_to (count, Qnil); | |
3367 | ||
dd2a17ab KS |
3368 | if (s < 0) |
3369 | { | |
dd2a17ab KS |
3370 | /* If non-blocking got this far - and failed - assume non-blocking is |
3371 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3372 | the normal blocking calls to open-network-stream handles this error |
3373 | better. */ | |
3374 | if (is_non_blocking_client) | |
dd2a17ab | 3375 | return Qnil; |
dd2a17ab | 3376 | |
d0d6b7c5 | 3377 | errno = xerrno; |
e690ca94 KS |
3378 | if (is_server) |
3379 | report_file_error ("make server process failed", contact); | |
3380 | else | |
3381 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3382 | } |
44ade2e9 | 3383 | |
d0d6b7c5 | 3384 | inch = s; |
59f23005 | 3385 | outch = s; |
d0d6b7c5 JB |
3386 | |
3387 | if (!NILP (buffer)) | |
3388 | buffer = Fget_buffer_create (buffer); | |
3389 | proc = make_process (name); | |
3390 | ||
3391 | chan_process[inch] = proc; | |
3392 | ||
3393 | #ifdef O_NONBLOCK | |
3394 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3395 | #else | |
3396 | #ifdef O_NDELAY | |
3397 | fcntl (inch, F_SETFL, O_NDELAY); | |
3398 | #endif | |
3399 | #endif | |
3400 | ||
e690ca94 KS |
3401 | p = XPROCESS (proc); |
3402 | ||
21238f11 DA |
3403 | PSET (p, childp, contact); |
3404 | PSET (p, plist, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
3405 | PSET (p, type, Qnetwork); | |
177c0ea7 | 3406 | |
21238f11 DA |
3407 | PSET (p, buffer, buffer); |
3408 | PSET (p, sentinel, sentinel); | |
3409 | PSET (p, filter, filter); | |
3410 | PSET (p, log, Fplist_get (contact, QClog)); | |
e690ca94 | 3411 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
60f0fb11 | 3412 | p->kill_without_query = 1; |
e690ca94 | 3413 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
21238f11 | 3414 | PSET (p, command, Qt); |
6bfd98e7 | 3415 | p->pid = 0; |
60f0fb11 SM |
3416 | p->infd = inch; |
3417 | p->outfd = outch; | |
84b31826 | 3418 | if (is_server && socktype != SOCK_DGRAM) |
21238f11 | 3419 | PSET (p, status, Qlisten); |
dd2a17ab | 3420 | |
f523e0c3 SM |
3421 | /* Make the process marker point into the process buffer (if any). */ |
3422 | if (BUFFERP (buffer)) | |
4d2b044c | 3423 | set_marker_both (p->mark, buffer, |
f523e0c3 SM |
3424 | BUF_ZV (XBUFFER (buffer)), |
3425 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3426 | ||
dd2a17ab | 3427 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3428 | if (is_non_blocking_client) |
dd2a17ab KS |
3429 | { |
3430 | /* We may get here if connect did succeed immediately. However, | |
3431 | in that case, we still need to signal this like a non-blocking | |
3432 | connection. */ | |
21238f11 | 3433 | PSET (p, status, Qconnect); |
dd2a17ab KS |
3434 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3435 | { | |
3436 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3437 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3438 | num_pending_connects++; |
3439 | } | |
3440 | } | |
3441 | else | |
3442 | #endif | |
e690ca94 KS |
3443 | /* A server may have a client filter setting of Qt, but it must |
3444 | still listen for incoming connects unless it is stopped. */ | |
4d2b044c DA |
3445 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
3446 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3447 | { |
3448 | FD_SET (inch, &input_wait_mask); | |
3449 | FD_SET (inch, &non_keyboard_wait_mask); | |
3450 | } | |
3451 | ||
7d0e672e RS |
3452 | if (inch > max_process_desc) |
3453 | max_process_desc = inch; | |
d0d6b7c5 | 3454 | |
e690ca94 KS |
3455 | tem = Fplist_member (contact, QCcoding); |
3456 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3457 | tem = Qnil; /* No error message (too late!). */ | |
3458 | ||
67918941 RS |
3459 | { |
3460 | /* Setup coding systems for communicating with the network stream. */ | |
dbf31225 | 3461 | struct gcpro gcpro1; |
67918941 RS |
3462 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
3463 | Lisp_Object coding_systems = Qt; | |
b93aacde | 3464 | Lisp_Object fargs[5], val; |
67918941 | 3465 | |
e690ca94 | 3466 | if (!NILP (tem)) |
6b61353c KH |
3467 | { |
3468 | val = XCAR (XCDR (tem)); | |
3469 | if (CONSP (val)) | |
3470 | val = XCAR (val); | |
3471 | } | |
e690ca94 | 3472 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3473 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3474 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3475 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3476 | /* We dare not decode end-of-line format by setting VAL to |
3477 | Qraw_text, because the existing Emacs Lisp libraries | |
9858f6c3 | 3478 | assume that they receive bare code including a sequence of |
67918941 RS |
3479 | CR LF. */ |
3480 | val = Qnil; | |
3481 | else | |
3482 | { | |
991234f0 KS |
3483 | if (NILP (host) || NILP (service)) |
3484 | coding_systems = Qnil; | |
3485 | else | |
3486 | { | |
b93aacde PE |
3487 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3488 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3489 | GCPRO1 (proc); |
b93aacde | 3490 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3491 | UNGCPRO; |
991234f0 | 3492 | } |
67918941 | 3493 | if (CONSP (coding_systems)) |
70949dac | 3494 | val = XCAR (coding_systems); |
67918941 | 3495 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3496 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3497 | else |
3498 | val = Qnil; | |
3499 | } | |
21238f11 | 3500 | PSET (p, decode_coding_system, val); |
0fa1789e | 3501 | |
e690ca94 | 3502 | if (!NILP (tem)) |
6b61353c KH |
3503 | { |
3504 | val = XCAR (XCDR (tem)); | |
3505 | if (CONSP (val)) | |
3506 | val = XCDR (val); | |
3507 | } | |
e690ca94 | 3508 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3509 | val = Vcoding_system_for_write; |
4b4deea2 | 3510 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3511 | val = Qnil; |
3512 | else | |
3513 | { | |
3514 | if (EQ (coding_systems, Qt)) | |
3515 | { | |
991234f0 KS |
3516 | if (NILP (host) || NILP (service)) |
3517 | coding_systems = Qnil; | |
3518 | else | |
3519 | { | |
b93aacde PE |
3520 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3521 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3522 | GCPRO1 (proc); |
b93aacde | 3523 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3524 | UNGCPRO; |
991234f0 | 3525 | } |
67918941 RS |
3526 | } |
3527 | if (CONSP (coding_systems)) | |
70949dac | 3528 | val = XCDR (coding_systems); |
67918941 | 3529 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3530 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3531 | else |
3532 | val = Qnil; | |
3533 | } | |
21238f11 | 3534 | PSET (p, encode_coding_system, val); |
67918941 | 3535 | } |
03f04413 | 3536 | setup_process_coding_systems (proc); |
0fa1789e | 3537 | |
21238f11 | 3538 | PSET (p, decoding_buf, empty_unibyte_string); |
60f0fb11 | 3539 | p->decoding_carryover = 0; |
21238f11 | 3540 | PSET (p, encoding_buf, empty_unibyte_string); |
0fa1789e | 3541 | |
e690ca94 | 3542 | p->inherit_coding_system_flag |
e6fca843 | 3543 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3544 | |
d0d6b7c5 JB |
3545 | UNGCPRO; |
3546 | return proc; | |
3547 | } | |
d0d6b7c5 | 3548 | |
6b61353c | 3549 | \f |
5e617bc2 | 3550 | #if defined (HAVE_NET_IF_H) |
6b61353c KH |
3551 | |
3552 | #ifdef SIOCGIFCONF | |
3553 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3554 | doc: /* Return an alist of all network interfaces and their network address. | |
3555 | Each element is a cons, the car of which is a string containing the | |
3556 | interface name, and the cdr is the network address in internal | |
3557 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3558 | (void) |
6b61353c KH |
3559 | { |
3560 | struct ifconf ifconf; | |
377538cb JD |
3561 | struct ifreq *ifreq; |
3562 | void *buf = NULL; | |
70c60eb2 PE |
3563 | ptrdiff_t buf_size = 512; |
3564 | int s, i; | |
6b61353c KH |
3565 | Lisp_Object res; |
3566 | ||
3567 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3568 | if (s < 0) | |
3569 | return Qnil; | |
3570 | ||
76667214 | 3571 | do |
6b61353c | 3572 | { |
76667214 PE |
3573 | buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1); |
3574 | ifconf.ifc_buf = buf; | |
3575 | ifconf.ifc_len = buf_size; | |
156bffbe AS |
3576 | if (ioctl (s, SIOCGIFCONF, &ifconf)) |
3577 | { | |
3578 | close (s); | |
76667214 | 3579 | xfree (buf); |
156bffbe AS |
3580 | return Qnil; |
3581 | } | |
6b61353c | 3582 | } |
76667214 | 3583 | while (ifconf.ifc_len == buf_size); |
6b61353c KH |
3584 | |
3585 | close (s); | |
6b61353c KH |
3586 | |
3587 | res = Qnil; | |
156bffbe AS |
3588 | ifreq = ifconf.ifc_req; |
3589 | while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len) | |
6b61353c | 3590 | { |
377538cb JD |
3591 | struct ifreq *ifq = ifreq; |
3592 | #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN | |
156bffbe AS |
3593 | #define SIZEOF_IFREQ(sif) \ |
3594 | ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \ | |
3595 | ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len) | |
377538cb JD |
3596 | |
3597 | int len = SIZEOF_IFREQ (ifq); | |
3598 | #else | |
3599 | int len = sizeof (*ifreq); | |
3600 | #endif | |
6b61353c | 3601 | char namebuf[sizeof (ifq->ifr_name) + 1]; |
377538cb | 3602 | i += len; |
156bffbe | 3603 | ifreq = (struct ifreq *) ((char *) ifreq + len); |
377538cb | 3604 | |
6b61353c KH |
3605 | if (ifq->ifr_addr.sa_family != AF_INET) |
3606 | continue; | |
377538cb | 3607 | |
72af86bd | 3608 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3609 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3610 | res = Fcons (Fcons (build_string (namebuf), | |
3611 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3612 | sizeof (struct sockaddr))), | |
3613 | res); | |
3614 | } | |
3615 | ||
377538cb | 3616 | xfree (buf); |
6b61353c KH |
3617 | return res; |
3618 | } | |
3619 | #endif /* SIOCGIFCONF */ | |
3620 | ||
5e617bc2 | 3621 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
6b61353c KH |
3622 | |
3623 | struct ifflag_def { | |
3624 | int flag_bit; | |
91433552 | 3625 | const char *flag_sym; |
6b61353c KH |
3626 | }; |
3627 | ||
91433552 | 3628 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3629 | #ifdef IFF_UP |
3630 | { IFF_UP, "up" }, | |
3631 | #endif | |
3632 | #ifdef IFF_BROADCAST | |
3633 | { IFF_BROADCAST, "broadcast" }, | |
3634 | #endif | |
3635 | #ifdef IFF_DEBUG | |
3636 | { IFF_DEBUG, "debug" }, | |
3637 | #endif | |
3638 | #ifdef IFF_LOOPBACK | |
3639 | { IFF_LOOPBACK, "loopback" }, | |
3640 | #endif | |
3641 | #ifdef IFF_POINTOPOINT | |
3642 | { IFF_POINTOPOINT, "pointopoint" }, | |
3643 | #endif | |
3644 | #ifdef IFF_RUNNING | |
3645 | { IFF_RUNNING, "running" }, | |
3646 | #endif | |
3647 | #ifdef IFF_NOARP | |
3648 | { IFF_NOARP, "noarp" }, | |
3649 | #endif | |
3650 | #ifdef IFF_PROMISC | |
3651 | { IFF_PROMISC, "promisc" }, | |
3652 | #endif | |
3653 | #ifdef IFF_NOTRAILERS | |
377538cb JD |
3654 | #ifdef NS_IMPL_COCOA |
3655 | /* Really means smart, notrailers is obsolete */ | |
3656 | { IFF_NOTRAILERS, "smart" }, | |
3657 | #else | |
6b61353c KH |
3658 | { IFF_NOTRAILERS, "notrailers" }, |
3659 | #endif | |
377538cb | 3660 | #endif |
6b61353c KH |
3661 | #ifdef IFF_ALLMULTI |
3662 | { IFF_ALLMULTI, "allmulti" }, | |
3663 | #endif | |
3664 | #ifdef IFF_MASTER | |
3665 | { IFF_MASTER, "master" }, | |
3666 | #endif | |
3667 | #ifdef IFF_SLAVE | |
3668 | { IFF_SLAVE, "slave" }, | |
3669 | #endif | |
3670 | #ifdef IFF_MULTICAST | |
3671 | { IFF_MULTICAST, "multicast" }, | |
3672 | #endif | |
3673 | #ifdef IFF_PORTSEL | |
3674 | { IFF_PORTSEL, "portsel" }, | |
3675 | #endif | |
3676 | #ifdef IFF_AUTOMEDIA | |
3677 | { IFF_AUTOMEDIA, "automedia" }, | |
3678 | #endif | |
3679 | #ifdef IFF_DYNAMIC | |
3680 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3681 | #endif |
2026418c YM |
3682 | #ifdef IFF_OACTIVE |
3683 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3684 | #endif |
3685 | #ifdef IFF_SIMPLEX | |
3686 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3687 | #endif | |
3688 | #ifdef IFF_LINK0 | |
3689 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3690 | #endif | |
3691 | #ifdef IFF_LINK1 | |
3692 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3693 | #endif | |
3694 | #ifdef IFF_LINK2 | |
3695 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3696 | #endif |
3697 | { 0, 0 } | |
3698 | }; | |
3699 | ||
3700 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3701 | doc: /* Return information about network interface named IFNAME. | |
3702 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3703 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
e4920bc9 | 3704 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and |
6b61353c | 3705 | FLAGS is the current flags of the interface. */) |
5842a27b | 3706 | (Lisp_Object ifname) |
6b61353c KH |
3707 | { |
3708 | struct ifreq rq; | |
3709 | Lisp_Object res = Qnil; | |
3710 | Lisp_Object elt; | |
3711 | int s; | |
3712 | int any = 0; | |
0a0d27fb PE |
3713 | #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \ |
3714 | && defined HAVE_GETIFADDRS && defined LLADDR) | |
377538cb JD |
3715 | struct ifaddrs *ifap; |
3716 | #endif | |
6b61353c KH |
3717 | |
3718 | CHECK_STRING (ifname); | |
3719 | ||
e99a530f PE |
3720 | if (sizeof rq.ifr_name <= SBYTES (ifname)) |
3721 | error ("interface name too long"); | |
3722 | strcpy (rq.ifr_name, SSDATA (ifname)); | |
6b61353c KH |
3723 | |
3724 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3725 | if (s < 0) | |
3726 | return Qnil; | |
3727 | ||
3728 | elt = Qnil; | |
5e617bc2 | 3729 | #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS) |
6b61353c KH |
3730 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3731 | { | |
3732 | int flags = rq.ifr_flags; | |
91433552 | 3733 | const struct ifflag_def *fp; |
6b61353c KH |
3734 | int fnum; |
3735 | ||
377538cb JD |
3736 | /* If flags is smaller than int (i.e. short) it may have the high bit set |
3737 | due to IFF_MULTICAST. In that case, sign extending it into | |
3738 | an int is wrong. */ | |
3739 | if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags)) | |
3740 | flags = (unsigned short) rq.ifr_flags; | |
3741 | ||
bc57d757 | 3742 | any = 1; |
82a80058 | 3743 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3744 | { |
3745 | if (flags & fp->flag_bit) | |
3746 | { | |
3747 | elt = Fcons (intern (fp->flag_sym), elt); | |
3748 | flags -= fp->flag_bit; | |
3749 | } | |
3750 | } | |
fa3c87e1 | 3751 | for (fnum = 0; flags && fnum < 32; flags >>= 1, fnum++) |
6b61353c | 3752 | { |
fa3c87e1 | 3753 | if (flags & 1) |
6b61353c KH |
3754 | { |
3755 | elt = Fcons (make_number (fnum), elt); | |
3756 | } | |
3757 | } | |
3758 | } | |
3759 | #endif | |
3760 | res = Fcons (elt, res); | |
3761 | ||
3762 | elt = Qnil; | |
5e617bc2 | 3763 | #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR) |
6b61353c KH |
3764 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3765 | { | |
3766 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3767 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3768 | int n; | |
3769 | ||
bc57d757 | 3770 | any = 1; |
6b61353c KH |
3771 | for (n = 0; n < 6; n++) |
3772 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3773 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3774 | } | |
5e617bc2 | 3775 | #elif defined (HAVE_GETIFADDRS) && defined (LLADDR) |
377538cb JD |
3776 | if (getifaddrs (&ifap) != -1) |
3777 | { | |
3778 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3779 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3780 | struct ifaddrs *it; | |
3781 | ||
3782 | for (it = ifap; it != NULL; it = it->ifa_next) | |
3783 | { | |
3784 | struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr; | |
3785 | unsigned char linkaddr[6]; | |
3786 | int n; | |
3787 | ||
3788 | if (it->ifa_addr->sa_family != AF_LINK | |
3789 | || strcmp (it->ifa_name, SSDATA (ifname)) != 0 | |
3790 | || sdl->sdl_alen != 6) | |
3791 | continue; | |
3792 | ||
5e617bc2 | 3793 | memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen); |
377538cb JD |
3794 | for (n = 0; n < 6; n++) |
3795 | p->contents[n] = make_number (linkaddr[n]); | |
3796 | ||
3797 | elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr); | |
3798 | break; | |
3799 | } | |
3800 | } | |
3801 | #ifdef HAVE_FREEIFADDRS | |
3802 | freeifaddrs (ifap); | |
6b61353c | 3803 | #endif |
377538cb JD |
3804 | |
3805 | #endif /* HAVE_GETIFADDRS && LLADDR */ | |
3806 | ||
6b61353c KH |
3807 | res = Fcons (elt, res); |
3808 | ||
3809 | elt = Qnil; | |
5e617bc2 | 3810 | #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3811 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3812 | { | |
bc57d757 | 3813 | any = 1; |
2026418c | 3814 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3815 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3816 | #else |
3817 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3818 | #endif | |
6b61353c KH |
3819 | } |
3820 | #endif | |
3821 | res = Fcons (elt, res); | |
3822 | ||
3823 | elt = Qnil; | |
5e617bc2 | 3824 | #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
6b61353c KH |
3825 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3826 | { | |
bc57d757 | 3827 | any = 1; |
6b61353c KH |
3828 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); |
3829 | } | |
3830 | #endif | |
3831 | res = Fcons (elt, res); | |
3832 | ||
3833 | elt = Qnil; | |
5e617bc2 | 3834 | #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR) |
6b61353c KH |
3835 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3836 | { | |
bc57d757 | 3837 | any = 1; |
6b61353c KH |
3838 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); |
3839 | } | |
3840 | #endif | |
3841 | res = Fcons (elt, res); | |
3842 | ||
3843 | close (s); | |
3844 | ||
3845 | return any ? res : Qnil; | |
3846 | } | |
3847 | #endif | |
5e617bc2 | 3848 | #endif /* defined (HAVE_NET_IF_H) */ |
6b61353c | 3849 | |
04391069 RS |
3850 | /* Turn off input and output for process PROC. */ |
3851 | ||
40ccffa6 | 3852 | static void |
d3da34e0 | 3853 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3854 | { |
3855 | register int inchannel, outchannel; | |
3856 | register struct Lisp_Process *p = XPROCESS (proc); | |
3857 | ||
9c6c6f49 CY |
3858 | #ifdef HAVE_GNUTLS |
3859 | /* Delete GnuTLS structures in PROC, if any. */ | |
3860 | emacs_gnutls_deinit (proc); | |
3861 | #endif /* HAVE_GNUTLS */ | |
3862 | ||
60f0fb11 SM |
3863 | inchannel = p->infd; |
3864 | outchannel = p->outfd; | |
d0d6b7c5 | 3865 | |
6b61353c | 3866 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3867 | if (p->read_output_delay > 0) |
6b61353c KH |
3868 | { |
3869 | if (--process_output_delay_count < 0) | |
3870 | process_output_delay_count = 0; | |
60f0fb11 SM |
3871 | p->read_output_delay = 0; |
3872 | p->read_output_skip = 0; | |
6b61353c KH |
3873 | } |
3874 | #endif | |
f3d9532b | 3875 | |
a9f2c884 | 3876 | if (inchannel >= 0) |
d0d6b7c5 JB |
3877 | { |
3878 | /* Beware SIGCHLD hereabouts. */ | |
3879 | flush_pending_output (inchannel); | |
68c45bf0 | 3880 | emacs_close (inchannel); |
a9f2c884 | 3881 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3882 | emacs_close (outchannel); |
d0d6b7c5 | 3883 | |
60f0fb11 SM |
3884 | p->infd = -1; |
3885 | p->outfd = -1; | |
e690ca94 KS |
3886 | #ifdef DATAGRAM_SOCKETS |
3887 | if (DATAGRAM_CHAN_P (inchannel)) | |
3888 | { | |
3889 | xfree (datagram_address[inchannel].sa); | |
3890 | datagram_address[inchannel].sa = 0; | |
3891 | datagram_address[inchannel].len = 0; | |
3892 | } | |
3893 | #endif | |
d0d6b7c5 JB |
3894 | chan_process[inchannel] = Qnil; |
3895 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3896 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3897 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3898 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3899 | { | |
3900 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 3901 | FD_CLR (inchannel, &write_mask); |
dd2a17ab KS |
3902 | if (--num_pending_connects < 0) |
3903 | abort (); | |
3904 | } | |
bad49fc7 | 3905 | #endif |
7d0e672e RS |
3906 | if (inchannel == max_process_desc) |
3907 | { | |
3908 | int i; | |
3909 | /* We just closed the highest-numbered process input descriptor, | |
3910 | so recompute the highest-numbered one now. */ | |
3911 | max_process_desc = 0; | |
3912 | for (i = 0; i < MAXDESC; i++) | |
3913 | if (!NILP (chan_process[i])) | |
3914 | max_process_desc = i; | |
3915 | } | |
d0d6b7c5 JB |
3916 | } |
3917 | } | |
3918 | ||
d0d6b7c5 JB |
3919 | \f |
3920 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3921 | 0, 4, 0, |
fdb82f93 PJ |
3922 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3923 | It is read into the process' buffers or given to their filter functions. | |
3924 | Non-nil arg PROCESS means do not return until some output has been received | |
3925 | from PROCESS. | |
5088da42 | 3926 | |
2a7bb882 MR |
3927 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
3928 | and milliseconds to wait; return after that much time whether or not | |
3929 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 3930 | it specifies a fractional number of seconds to wait. |
891bd142 | 3931 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 3932 | |
107ed38d KS |
3933 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3934 | from PROCESS, suspending reading output from other processes. | |
3935 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 3936 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 3937 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 3938 | { |
d35af63c PE |
3939 | intmax_t secs; |
3940 | int nsecs; | |
d0d6b7c5 | 3941 | |
0748d150 | 3942 | if (! NILP (process)) |
b7826503 | 3943 | CHECK_PROCESS (process); |
107ed38d KS |
3944 | else |
3945 | just_this_one = Qnil; | |
0748d150 | 3946 | |
891bd142 SM |
3947 | if (!NILP (millisec)) |
3948 | { /* Obsolete calling convention using integers rather than floats. */ | |
3949 | CHECK_NUMBER (millisec); | |
3950 | if (NILP (seconds)) | |
3951 | seconds = make_float (XINT (millisec) / 1000.0); | |
3952 | else | |
3953 | { | |
3954 | CHECK_NUMBER (seconds); | |
3955 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
3956 | } | |
3957 | } | |
3958 | ||
d35af63c PE |
3959 | secs = 0; |
3960 | nsecs = -1; | |
3961 | ||
5088da42 | 3962 | if (!NILP (seconds)) |
d0d6b7c5 | 3963 | { |
d35af63c PE |
3964 | if (INTEGERP (seconds)) |
3965 | { | |
3966 | if (0 < XINT (seconds)) | |
3967 | { | |
3968 | secs = XINT (seconds); | |
3969 | nsecs = 0; | |
3970 | } | |
3971 | } | |
3972 | else if (FLOATP (seconds)) | |
3973 | { | |
3974 | if (0 < XFLOAT_DATA (seconds)) | |
3975 | { | |
3976 | EMACS_TIME t = EMACS_TIME_FROM_DOUBLE (XFLOAT_DATA (seconds)); | |
f1dd8073 | 3977 | secs = min (EMACS_SECS (t), WAIT_READING_MAX); |
d35af63c PE |
3978 | nsecs = EMACS_NSECS (t); |
3979 | } | |
3980 | } | |
3981 | else | |
3982 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 3983 | } |
d35af63c PE |
3984 | else if (! NILP (process)) |
3985 | nsecs = 0; | |
d0d6b7c5 JB |
3986 | |
3987 | return | |
d35af63c | 3988 | (wait_reading_process_output (secs, nsecs, 0, 0, |
214d6069 KS |
3989 | Qnil, |
3990 | !NILP (process) ? XPROCESS (process) : NULL, | |
3991 | NILP (just_this_one) ? 0 : | |
3992 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3993 | ? Qt : Qnil); |
3994 | } | |
3995 | ||
e690ca94 KS |
3996 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3997 | ||
3998 | static int connect_counter = 0; | |
3999 | ||
4000 | static void | |
d3da34e0 | 4001 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4002 | { |
4003 | Lisp_Object proc, caller, name, buffer; | |
4004 | Lisp_Object contact, host, service; | |
4005 | struct Lisp_Process *ps= XPROCESS (server); | |
4006 | struct Lisp_Process *p; | |
4007 | int s; | |
4008 | union u_sockaddr { | |
4009 | struct sockaddr sa; | |
4010 | struct sockaddr_in in; | |
e1652a86 KS |
4011 | #ifdef AF_INET6 |
4012 | struct sockaddr_in6 in6; | |
4013 | #endif | |
e690ca94 KS |
4014 | #ifdef HAVE_LOCAL_SOCKETS |
4015 | struct sockaddr_un un; | |
4016 | #endif | |
4017 | } saddr; | |
401bf9b4 | 4018 | socklen_t len = sizeof saddr; |
e690ca94 KS |
4019 | |
4020 | s = accept (channel, &saddr.sa, &len); | |
4021 | ||
4022 | if (s < 0) | |
4023 | { | |
4024 | int code = errno; | |
4025 | ||
4026 | if (code == EAGAIN) | |
4027 | return; | |
4028 | #ifdef EWOULDBLOCK | |
4029 | if (code == EWOULDBLOCK) | |
4030 | return; | |
4031 | #endif | |
4032 | ||
4d2b044c DA |
4033 | if (!NILP (ps->log)) |
4034 | call3 (ps->log, server, Qnil, | |
e690ca94 KS |
4035 | concat3 (build_string ("accept failed with code"), |
4036 | Fnumber_to_string (make_number (code)), | |
4037 | build_string ("\n"))); | |
4038 | return; | |
4039 | } | |
4040 | ||
4041 | connect_counter++; | |
4042 | ||
4043 | /* Setup a new process to handle the connection. */ | |
4044 | ||
4045 | /* Generate a unique identification of the caller, and build contact | |
4046 | information for this process. */ | |
4047 | host = Qt; | |
4048 | service = Qnil; | |
4049 | switch (saddr.sa.sa_family) | |
4050 | { | |
4051 | case AF_INET: | |
4052 | { | |
4053 | Lisp_Object args[5]; | |
4054 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4055 | args[0] = build_string ("%d.%d.%d.%d"); | |
4056 | args[1] = make_number (*ip++); | |
4057 | args[2] = make_number (*ip++); | |
4058 | args[3] = make_number (*ip++); | |
4059 | args[4] = make_number (*ip++); | |
4060 | host = Fformat (5, args); | |
4061 | service = make_number (ntohs (saddr.in.sin_port)); | |
4062 | ||
4063 | args[0] = build_string (" <%s:%d>"); | |
4064 | args[1] = host; | |
4065 | args[2] = service; | |
4066 | caller = Fformat (3, args); | |
4067 | } | |
4068 | break; | |
4069 | ||
e1652a86 KS |
4070 | #ifdef AF_INET6 |
4071 | case AF_INET6: | |
4072 | { | |
4073 | Lisp_Object args[9]; | |
4074 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4075 | int i; | |
4076 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4077 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4078 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4079 | host = Fformat (9, args); |
4080 | service = make_number (ntohs (saddr.in.sin_port)); | |
4081 | ||
4082 | args[0] = build_string (" <[%s]:%d>"); | |
4083 | args[1] = host; | |
4084 | args[2] = service; | |
4085 | caller = Fformat (3, args); | |
4086 | } | |
4087 | break; | |
4088 | #endif | |
4089 | ||
e690ca94 KS |
4090 | #ifdef HAVE_LOCAL_SOCKETS |
4091 | case AF_LOCAL: | |
4092 | #endif | |
4093 | default: | |
4094 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4095 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4096 | break; |
4097 | } | |
4098 | ||
4099 | /* Create a new buffer name for this process if it doesn't have a | |
4100 | filter. The new buffer name is based on the buffer name or | |
4101 | process name of the server process concatenated with the caller | |
4102 | identification. */ | |
4103 | ||
4d2b044c | 4104 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) |
e690ca94 KS |
4105 | buffer = Qnil; |
4106 | else | |
4107 | { | |
4d2b044c | 4108 | buffer = ps->buffer; |
e690ca94 KS |
4109 | if (!NILP (buffer)) |
4110 | buffer = Fbuffer_name (buffer); | |
4111 | else | |
4d2b044c | 4112 | buffer = ps->name; |
e690ca94 KS |
4113 | if (!NILP (buffer)) |
4114 | { | |
4115 | buffer = concat2 (buffer, caller); | |
4116 | buffer = Fget_buffer_create (buffer); | |
4117 | } | |
4118 | } | |
4119 | ||
4120 | /* Generate a unique name for the new server process. Combine the | |
4121 | server process name with the caller identification. */ | |
4122 | ||
4d2b044c | 4123 | name = concat2 (ps->name, caller); |
e690ca94 KS |
4124 | proc = make_process (name); |
4125 | ||
4126 | chan_process[s] = proc; | |
4127 | ||
4128 | #ifdef O_NONBLOCK | |
4129 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4130 | #else | |
4131 | #ifdef O_NDELAY | |
4132 | fcntl (s, F_SETFL, O_NDELAY); | |
4133 | #endif | |
4134 | #endif | |
4135 | ||
4136 | p = XPROCESS (proc); | |
4137 | ||
4138 | /* Build new contact information for this setup. */ | |
4d2b044c | 4139 | contact = Fcopy_sequence (ps->childp); |
e690ca94 KS |
4140 | contact = Fplist_put (contact, QCserver, Qnil); |
4141 | contact = Fplist_put (contact, QChost, host); | |
4142 | if (!NILP (service)) | |
4143 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4144 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4145 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4146 | #ifdef HAVE_GETSOCKNAME | |
4147 | len = sizeof saddr; | |
2185db04 | 4148 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4149 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4150 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4151 | #endif | |
4152 | ||
21238f11 | 4153 | PSET (p, childp, contact); |
4d2b044c | 4154 | PSET (p, plist, Fcopy_sequence (ps->plist)); |
21238f11 | 4155 | PSET (p, type, Qnetwork); |
ac4a7584 | 4156 | |
21238f11 | 4157 | PSET (p, buffer, buffer); |
4d2b044c DA |
4158 | PSET (p, sentinel, ps->sentinel); |
4159 | PSET (p, filter, ps->filter); | |
21238f11 | 4160 | PSET (p, command, Qnil); |
6bfd98e7 | 4161 | p->pid = 0; |
60f0fb11 SM |
4162 | p->infd = s; |
4163 | p->outfd = s; | |
21238f11 | 4164 | PSET (p, status, Qrun); |
e690ca94 KS |
4165 | |
4166 | /* Client processes for accepted connections are not stopped initially. */ | |
4d2b044c | 4167 | if (!EQ (p->filter, Qt)) |
e690ca94 KS |
4168 | { |
4169 | FD_SET (s, &input_wait_mask); | |
4170 | FD_SET (s, &non_keyboard_wait_mask); | |
4171 | } | |
4172 | ||
4173 | if (s > max_process_desc) | |
4174 | max_process_desc = s; | |
4175 | ||
177c0ea7 | 4176 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4177 | This seems to be the proper thing to do, as the coding system |
4178 | of the new process should reflect the settings at the time the | |
4179 | server socket was opened; not the current settings. */ | |
4180 | ||
4d2b044c DA |
4181 | PSET (p, decode_coding_system, ps->decode_coding_system); |
4182 | PSET (p, encode_coding_system, ps->encode_coding_system); | |
03f04413 | 4183 | setup_process_coding_systems (proc); |
e690ca94 | 4184 | |
21238f11 | 4185 | PSET (p, decoding_buf, empty_unibyte_string); |
60f0fb11 | 4186 | p->decoding_carryover = 0; |
21238f11 | 4187 | PSET (p, encoding_buf, empty_unibyte_string); |
e690ca94 KS |
4188 | |
4189 | p->inherit_coding_system_flag | |
60f0fb11 | 4190 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 | 4191 | |
4d2b044c DA |
4192 | if (!NILP (ps->log)) |
4193 | call3 (ps->log, server, proc, | |
e690ca94 KS |
4194 | concat3 (build_string ("accept from "), |
4195 | (STRINGP (host) ? host : build_string ("-")), | |
4196 | build_string ("\n"))); | |
4197 | ||
4d2b044c | 4198 | if (!NILP (p->sentinel)) |
177c0ea7 | 4199 | exec_sentinel (proc, |
e690ca94 KS |
4200 | concat3 (build_string ("open from "), |
4201 | (STRINGP (host) ? host : build_string ("-")), | |
4202 | build_string ("\n"))); | |
4203 | } | |
4204 | ||
d0d6b7c5 JB |
4205 | /* This variable is different from waiting_for_input in keyboard.c. |
4206 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4207 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4208 | for user-input when that process-filter was called. |
4209 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4210 | lisp code is being evalled. |
4211 | This is also used in record_asynch_buffer_change. | |
4212 | For that purpose, this must be 0 | |
214d6069 | 4213 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4214 | static int waiting_for_user_input_p; |
4215 | ||
2beb96f9 | 4216 | static Lisp_Object |
d3da34e0 | 4217 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4218 | { |
4219 | waiting_for_user_input_p = XINT (data); | |
4220 | return Qnil; | |
4221 | } | |
4222 | ||
c573ae8e | 4223 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4224 | static void |
d3da34e0 | 4225 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4226 | { |
4227 | } | |
4228 | ||
d0d6b7c5 JB |
4229 | /* Read and dispose of subprocess output while waiting for timeout to |
4230 | elapse and/or keyboard input to be available. | |
4231 | ||
de6fd4b9 | 4232 | TIME_LIMIT is: |
d35af63c PE |
4233 | timeout in seconds |
4234 | If negative, gobble data immediately available but don't wait for any. | |
d0d6b7c5 | 4235 | |
d35af63c PE |
4236 | NSECS is: |
4237 | an additional duration to wait, measured in nanoseconds | |
4238 | If TIME_LIMIT is zero, then: | |
4239 | If NSECS == 0, there is no limit. | |
d188e26b | 4240 | If NSECS > 0, the timeout consists of NSECS only. |
d35af63c | 4241 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
6e4f3667 | 4242 | |
a0bee46f | 4243 | READ_KBD is: |
d0d6b7c5 JB |
4244 | 0 to ignore keyboard input, or |
4245 | 1 to return when input is available, or | |
84aa3ace | 4246 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4247 | the quit handler, or |
d0d6b7c5 | 4248 | |
de6fd4b9 | 4249 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4250 | output that arrives. |
d0d6b7c5 | 4251 | |
b89a415a KS |
4252 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4253 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4254 | |
b89a415a | 4255 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4256 | process. The return value is true if we read some input from |
b89a415a KS |
4257 | that process. |
4258 | ||
4259 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4260 | (suspending output from other processes). A negative value | |
4261 | means don't run any timers either. | |
4262 | ||
e0f24100 | 4263 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4264 | received input from that process before the timeout elapsed. |
e0f24100 | 4265 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4266 | |
dfcf069d | 4267 | int |
d35af63c | 4268 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
d5a3eaaf AS |
4269 | int do_display, |
4270 | Lisp_Object wait_for_cell, | |
4271 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4272 | { |
41d03b9a | 4273 | register int channel, nfds; |
855448dc | 4274 | SELECT_TYPE Available; |
3fad2ad2 J |
4275 | SELECT_TYPE Writeok; |
4276 | int check_write; | |
bad49fc7 | 4277 | int check_delay, no_avail; |
d0d6b7c5 JB |
4278 | int xerrno; |
4279 | Lisp_Object proc; | |
41d03b9a | 4280 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4281 | int wait_channel = -1; |
d0d6b7c5 | 4282 | int got_some_input = 0; |
d311d28c | 4283 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4284 | |
4285 | FD_ZERO (&Available); | |
3fad2ad2 | 4286 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4287 | |
d35af63c | 4288 | if (time_limit == 0 && nsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
4d2b044c DA |
4289 | && !(CONSP (wait_proc->status) |
4290 | && EQ (XCAR (wait_proc->status), Qexit))) | |
2b0a91e7 SM |
4291 | message ("Blocking call to accept-process-output with quit inhibited!!"); |
4292 | ||
b89a415a KS |
4293 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4294 | if (wait_proc != NULL) | |
60f0fb11 | 4295 | wait_channel = wait_proc->infd; |
84aa3ace | 4296 | |
2beb96f9 KS |
4297 | record_unwind_protect (wait_reading_process_output_unwind, |
4298 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4299 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 | 4300 | |
d35af63c PE |
4301 | if (time_limit < 0) |
4302 | { | |
4303 | time_limit = 0; | |
4304 | nsecs = -1; | |
4305 | } | |
4306 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
4307 | time_limit = TYPE_MAXIMUM (time_t); | |
4308 | ||
d0d6b7c5 JB |
4309 | /* Since we may need to wait several times, |
4310 | compute the absolute time to return at. */ | |
216ee680 | 4311 | if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4312 | { |
e9a9ae03 PE |
4313 | timeout = make_emacs_time (time_limit, nsecs); |
4314 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
d0d6b7c5 JB |
4315 | } |
4316 | ||
d0d6b7c5 JB |
4317 | while (1) |
4318 | { | |
c0239a0b RS |
4319 | int timeout_reduced_for_timers = 0; |
4320 | ||
d0d6b7c5 JB |
4321 | /* If calling from keyboard input, do not quit |
4322 | since we want to return C-g as an input character. | |
4323 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4324 | if (read_kbd >= 0) |
d0d6b7c5 | 4325 | QUIT; |
6b61353c | 4326 | #ifdef SYNC_INPUT |
ef5eb925 | 4327 | else |
c3eff1b0 | 4328 | process_pending_signals (); |
6b61353c | 4329 | #endif |
d0d6b7c5 | 4330 | |
889255b4 | 4331 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4332 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4333 | break; |
4334 | ||
d0d6b7c5 JB |
4335 | /* Compute time from now till when time limit is up */ |
4336 | /* Exit if already run out */ | |
d35af63c | 4337 | if (nsecs < 0) |
d0d6b7c5 | 4338 | { |
216ee680 | 4339 | /* A negative timeout means |
d0d6b7c5 JB |
4340 | gobble output available now |
4341 | but don't wait at all. */ | |
4342 | ||
e9a9ae03 | 4343 | timeout = make_emacs_time (0, 0); |
d0d6b7c5 | 4344 | } |
216ee680 | 4345 | else if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4346 | { |
e9a9ae03 PE |
4347 | EMACS_TIME now = current_emacs_time (); |
4348 | if (EMACS_TIME_LE (end_time, now)) | |
d0d6b7c5 | 4349 | break; |
e9a9ae03 | 4350 | timeout = sub_emacs_time (end_time, now); |
d0d6b7c5 JB |
4351 | } |
4352 | else | |
4353 | { | |
e9a9ae03 | 4354 | timeout = make_emacs_time (100000, 0); |
d0d6b7c5 JB |
4355 | } |
4356 | ||
f854a00b RS |
4357 | /* Normally we run timers here. |
4358 | But not if wait_for_cell; in those cases, | |
4359 | the wait is supposed to be short, | |
4360 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4361 | if (NILP (wait_for_cell) |
b89a415a | 4362 | && just_wait_proc >= 0) |
fb4c3627 | 4363 | { |
c0239a0b | 4364 | EMACS_TIME timer_delay; |
c573ae8e | 4365 | |
9baacf76 | 4366 | do |
c573ae8e | 4367 | { |
9baacf76 | 4368 | int old_timers_run = timers_run; |
c88164fe | 4369 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4370 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4371 | |
f868cd8a | 4372 | timer_delay = timer_check (); |
a2fab450 GM |
4373 | |
4374 | /* If a timer has run, this might have changed buffers | |
4375 | an alike. Make read_key_sequence aware of that. */ | |
4376 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4377 | && (old_buffer != current_buffer |
4378 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4379 | && waiting_for_user_input_p == -1) |
4380 | record_asynch_buffer_change (); | |
177c0ea7 | 4381 | |
9baacf76 GM |
4382 | if (timers_run != old_timers_run && do_display) |
4383 | /* We must retry, since a timer may have requeued itself | |
4384 | and that could alter the time_delay. */ | |
3007ebfb | 4385 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4386 | else |
4387 | break; | |
c573ae8e | 4388 | } |
9baacf76 | 4389 | while (!detect_input_pending ()); |
c573ae8e | 4390 | |
69645afc | 4391 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4392 | if (read_kbd != 0 |
69645afc RS |
4393 | && requeued_events_pending_p ()) |
4394 | break; | |
4395 | ||
216ee680 | 4396 | /* A negative timeout means do not wait at all. */ |
d35af63c | 4397 | if (0 <= nsecs) |
fb4c3627 | 4398 | { |
d35af63c | 4399 | if (EMACS_TIME_VALID_P (timer_delay)) |
c0239a0b | 4400 | { |
d35af63c PE |
4401 | if (EMACS_TIME_LT (timer_delay, timeout)) |
4402 | { | |
4403 | timeout = timer_delay; | |
4404 | timeout_reduced_for_timers = 1; | |
4405 | } | |
4406 | } | |
4407 | else | |
4408 | { | |
4409 | /* This is so a breakpoint can be put here. */ | |
4410 | wait_reading_process_output_1 (); | |
c0239a0b | 4411 | } |
c573ae8e | 4412 | } |
fb4c3627 RS |
4413 | } |
4414 | ||
90ab1a81 JB |
4415 | /* Cause C-g and alarm signals to take immediate action, |
4416 | and cause input available signals to zero out timeout. | |
4417 | ||
4418 | It is important that we do this before checking for process | |
4419 | activity. If we get a SIGCHLD after the explicit checks for | |
4420 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4421 | if (read_kbd < 0) |
90ab1a81 JB |
4422 | set_waiting_for_input (&timeout); |
4423 | ||
6be429b1 JB |
4424 | /* If status of something has changed, and no input is |
4425 | available, notify the user of the change right away. After | |
4426 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4427 | timeout to get our attention. */ |
4428 | if (update_tick != process_tick) | |
6be429b1 | 4429 | { |
bad49fc7 | 4430 | SELECT_TYPE Atemp; |
bad49fc7 | 4431 | SELECT_TYPE Ctemp; |
dd2a17ab | 4432 | |
cb768704 J |
4433 | if (kbd_on_hold_p ()) |
4434 | FD_ZERO (&Atemp); | |
4435 | else | |
4436 | Atemp = input_wait_mask; | |
3fad2ad2 | 4437 | Ctemp = write_mask; |
bad49fc7 | 4438 | |
e9a9ae03 | 4439 | timeout = make_emacs_time (0, 0); |
d35af63c PE |
4440 | if ((pselect (max (max_process_desc, max_input_desc) + 1, |
4441 | &Atemp, | |
bad49fc7 | 4442 | #ifdef NON_BLOCKING_CONNECT |
d35af63c | 4443 | (num_pending_connects > 0 ? &Ctemp : NULL), |
bad49fc7 | 4444 | #else |
d35af63c | 4445 | NULL, |
bad49fc7 | 4446 | #endif |
d35af63c | 4447 | NULL, &timeout, NULL) |
ecd1f654 | 4448 | <= 0)) |
90ab1a81 JB |
4449 | { |
4450 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4451 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4452 | clear_waiting_for_input (); |
ff6daed3 | 4453 | status_notify (NULL); |
e42bdf01 | 4454 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4455 | } |
6be429b1 JB |
4456 | } |
4457 | ||
dd2a17ab | 4458 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4459 | read whatever data has already been received. */ |
6bfd98e7 | 4460 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4461 | update_status (wait_proc); |
6bfd98e7 | 4462 | if (wait_proc |
4d2b044c DA |
4463 | && ! EQ (wait_proc->status, Qrun) |
4464 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4465 | { |
215b45e9 | 4466 | int nread, total_nread = 0; |
7ce63188 | 4467 | |
9aa2a7f4 | 4468 | clear_waiting_for_input (); |
7ce63188 RS |
4469 | XSETPROCESS (proc, wait_proc); |
4470 | ||
4471 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4472 | while (wait_proc->infd >= 0) |
215b45e9 | 4473 | { |
60f0fb11 | 4474 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4475 | |
4476 | if (nread == 0) | |
4477 | break; | |
4478 | ||
63136da6 AS |
4479 | if (0 < nread) |
4480 | { | |
891bd142 SM |
4481 | total_nread += nread; |
4482 | got_some_input = 1; | |
4483 | } | |
215b45e9 RS |
4484 | #ifdef EIO |
4485 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4486 | break; |
e1b37c34 GM |
4487 | #endif |
4488 | #ifdef EAGAIN | |
4489 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4490 | break; |
e1b37c34 GM |
4491 | #endif |
4492 | #ifdef EWOULDBLOCK | |
4493 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4494 | break; |
215b45e9 RS |
4495 | #endif |
4496 | } | |
7ce63188 | 4497 | if (total_nread > 0 && do_display) |
3007ebfb | 4498 | redisplay_preserve_echo_area (10); |
7ce63188 | 4499 | |
9aa2a7f4 JB |
4500 | break; |
4501 | } | |
6be429b1 | 4502 | |
d0d6b7c5 JB |
4503 | /* Wait till there is something to do */ |
4504 | ||
b89a415a | 4505 | if (wait_proc && just_wait_proc) |
107ed38d | 4506 | { |
60f0fb11 | 4507 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4508 | break; |
60f0fb11 | 4509 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4510 | check_delay = 0; |
3fad2ad2 | 4511 | check_write = 0; |
107ed38d KS |
4512 | } |
4513 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4514 | { |
4515 | Available = non_process_wait_mask; | |
bad49fc7 | 4516 | check_delay = 0; |
3fad2ad2 | 4517 | check_write = 0; |
dd2a17ab | 4518 | } |
a69281ff | 4519 | else |
dd2a17ab | 4520 | { |
b89a415a | 4521 | if (! read_kbd) |
dd2a17ab KS |
4522 | Available = non_keyboard_wait_mask; |
4523 | else | |
4524 | Available = input_wait_mask; | |
3fad2ad2 | 4525 | Writeok = write_mask; |
82d6e50b J |
4526 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4527 | check_write = 0; | |
4528 | #else | |
3fad2ad2 | 4529 | check_write = 1; |
82d6e50b | 4530 | #endif |
6b61353c | 4531 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4532 | } |
d0d6b7c5 | 4533 | |
ff11dfa1 | 4534 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4535 | redisplay now, before we start to wait. There is a race |
4536 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4537 | and indicates that a frame is trashed, the select may block |
4538 | displaying a trashed screen. */ | |
5164ee8e | 4539 | if (frame_garbaged && do_display) |
7286affd RS |
4540 | { |
4541 | clear_waiting_for_input (); | |
3007ebfb | 4542 | redisplay_preserve_echo_area (11); |
b89a415a | 4543 | if (read_kbd < 0) |
7efe788e | 4544 | set_waiting_for_input (&timeout); |
7286affd | 4545 | } |
ffd56f97 | 4546 | |
029529ac CY |
4547 | /* Skip the `select' call if input is available and we're |
4548 | waiting for keyboard input or a cell change (which can be | |
4549 | triggered by processing X events). In the latter case, set | |
4550 | nfds to 1 to avoid breaking the loop. */ | |
dd2a17ab | 4551 | no_avail = 0; |
029529ac CY |
4552 | if ((read_kbd || !NILP (wait_for_cell)) |
4553 | && detect_input_pending ()) | |
0a65b032 | 4554 | { |
029529ac | 4555 | nfds = read_kbd ? 0 : 1; |
dd2a17ab | 4556 | no_avail = 1; |
0a65b032 | 4557 | } |
029529ac CY |
4558 | |
4559 | if (!no_avail) | |
dd2a17ab | 4560 | { |
6b61353c KH |
4561 | |
4562 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4563 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4564 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4565 | read_output_delay, and we are not reading output for a |
4566 | specific wait_channel. It is not executed if | |
4567 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4568 | if (process_output_skip && check_delay > 0) |
4569 | { | |
d35af63c PE |
4570 | int nsecs = EMACS_NSECS (timeout); |
4571 | if (EMACS_SECS (timeout) > 0 || nsecs > READ_OUTPUT_DELAY_MAX) | |
4572 | nsecs = READ_OUTPUT_DELAY_MAX; | |
6b61353c KH |
4573 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) |
4574 | { | |
4575 | proc = chan_process[channel]; | |
4576 | if (NILP (proc)) | |
4577 | continue; | |
db853b7a | 4578 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4579 | processes with non-zero read_output_skip. */ |
4580 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4581 | { |
4582 | check_delay--; | |
60f0fb11 | 4583 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4584 | continue; |
4585 | FD_CLR (channel, &Available); | |
60f0fb11 | 4586 | XPROCESS (proc)->read_output_skip = 0; |
d35af63c PE |
4587 | if (XPROCESS (proc)->read_output_delay < nsecs) |
4588 | nsecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4589 | } |
4590 | } | |
e9a9ae03 | 4591 | timeout = make_emacs_time (0, nsecs); |
6b61353c KH |
4592 | process_output_skip = 0; |
4593 | } | |
4594 | #endif | |
0949d2b6 | 4595 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 JD |
4596 | nfds = xg_select |
4597 | #elif defined (HAVE_NS) | |
63136da6 | 4598 | nfds = ns_select |
edfda783 | 4599 | #else |
d35af63c | 4600 | nfds = pselect |
edfda783 | 4601 | #endif |
3fad2ad2 J |
4602 | (max (max_process_desc, max_input_desc) + 1, |
4603 | &Available, | |
4604 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
d35af63c | 4605 | NULL, &timeout, NULL); |
e061a11b TZ |
4606 | |
4607 | #ifdef HAVE_GNUTLS | |
4608 | /* GnuTLS buffers data internally. In lowat mode it leaves | |
4609 | some data in the TCP buffers so that select works, but | |
4610 | with custom pull/push functions we need to check if some | |
4611 | data is available in the buffers manually. */ | |
261b6fd4 LMI |
4612 | if (nfds == 0) |
4613 | { | |
4614 | if (! wait_proc) | |
4615 | { | |
4616 | /* We're not waiting on a specific process, so loop | |
16c1ad08 LMI |
4617 | through all the channels and check for data. |
4618 | This is a workaround needed for some versions of | |
4619 | the gnutls library -- 2.12.14 has been confirmed | |
4620 | to need it. See | |
4621 | http://comments.gmane.org/gmane.emacs.devel/145074 */ | |
261b6fd4 | 4622 | for (channel = 0; channel < MAXDESC; ++channel) |
5b76caa4 PE |
4623 | if (! NILP (chan_process[channel])) |
4624 | { | |
4625 | struct Lisp_Process *p = | |
4626 | XPROCESS (chan_process[channel]); | |
4627 | if (p && p->gnutls_p && p->infd | |
4628 | && ((emacs_gnutls_record_check_pending | |
4629 | (p->gnutls_state)) | |
4630 | > 0)) | |
4631 | { | |
4632 | nfds++; | |
4633 | FD_SET (p->infd, &Available); | |
4634 | } | |
4635 | } | |
261b6fd4 LMI |
4636 | } |
4637 | else | |
4638 | { | |
4639 | /* Check this specific channel. */ | |
5b76caa4 | 4640 | if (wait_proc->gnutls_p /* Check for valid process. */ |
261b6fd4 | 4641 | /* Do we have pending data? */ |
5b76caa4 PE |
4642 | && ((emacs_gnutls_record_check_pending |
4643 | (wait_proc->gnutls_state)) | |
4644 | > 0)) | |
261b6fd4 LMI |
4645 | { |
4646 | nfds = 1; | |
4647 | /* Set to Available. */ | |
4648 | FD_SET (wait_proc->infd, &Available); | |
4649 | } | |
4650 | } | |
4651 | } | |
e061a11b | 4652 | #endif |
dd2a17ab | 4653 | } |
6720a7fb | 4654 | |
d0d6b7c5 JB |
4655 | xerrno = errno; |
4656 | ||
4657 | /* Make C-g and alarm signals set flags again */ | |
4658 | clear_waiting_for_input (); | |
4659 | ||
4660 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4661 | do_pending_window_change (0); |
d0d6b7c5 | 4662 | |
d35af63c | 4663 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
216ee680 | 4664 | /* We waited the full specified time, so return now. */ |
d0d6b7c5 JB |
4665 | break; |
4666 | if (nfds < 0) | |
4667 | { | |
4668 | if (xerrno == EINTR) | |
dd2a17ab | 4669 | no_avail = 1; |
d0d6b7c5 JB |
4670 | else if (xerrno == EBADF) |
4671 | { | |
4672 | #ifdef AIX | |
4673 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4674 | the child's closure of the pts gives the parent a SIGHUP, and | |
4675 | the ptc file descriptor is automatically closed, | |
4676 | yielding EBADF here or at select() call above. | |
4677 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4678 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4679 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4680 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4681 | #else |
4682 | abort (); | |
4683 | #endif | |
4684 | } | |
4685 | else | |
68c45bf0 | 4686 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4687 | } |
dd2a17ab KS |
4688 | |
4689 | if (no_avail) | |
4690 | { | |
4691 | FD_ZERO (&Available); | |
3fad2ad2 | 4692 | check_write = 0; |
dd2a17ab KS |
4693 | } |
4694 | ||
5d5beb62 RS |
4695 | #if 0 /* When polling is used, interrupt_input is 0, |
4696 | so get_input_pending should read the input. | |
4697 | So this should not be needed. */ | |
4698 | /* If we are using polling for input, | |
4699 | and we see input available, make it get read now. | |
4700 | Otherwise it might not actually get read for a second. | |
214d6069 | 4701 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4702 | it might never get read at all if we don't spend much time |
214d6069 | 4703 | outside of wait_reading_process_output. */ |
b89a415a | 4704 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4705 | && keyboard_bit_set (&Available) |
4706 | && input_polling_used ()) | |
4707 | kill (getpid (), SIGALRM); | |
4708 | #endif | |
4709 | ||
d0d6b7c5 JB |
4710 | /* Check for keyboard input */ |
4711 | /* If there is any, return immediately | |
4712 | to give it higher priority than subprocesses */ | |
4713 | ||
b89a415a | 4714 | if (read_kbd != 0) |
6ed6233b | 4715 | { |
a2fab450 | 4716 | int old_timers_run = timers_run; |
c88164fe | 4717 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4718 | Lisp_Object old_window = selected_window; |
a2fab450 | 4719 | int leave = 0; |
177c0ea7 | 4720 | |
5d6c2aa3 | 4721 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4722 | { |
4723 | swallow_events (do_display); | |
4724 | if (detect_input_pending_run_timers (do_display)) | |
4725 | leave = 1; | |
4726 | } | |
6ed6233b | 4727 | |
a2fab450 GM |
4728 | /* If a timer has run, this might have changed buffers |
4729 | an alike. Make read_key_sequence aware of that. */ | |
4730 | if (timers_run != old_timers_run | |
c88164fe | 4731 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4732 | && (old_buffer != current_buffer |
4733 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4734 | record_asynch_buffer_change (); |
4735 | ||
4736 | if (leave) | |
4737 | break; | |
177c0ea7 JB |
4738 | } |
4739 | ||
69645afc | 4740 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4741 | if (read_kbd != 0 |
69645afc RS |
4742 | && requeued_events_pending_p ()) |
4743 | break; | |
4744 | ||
77e1b3d4 RS |
4745 | /* If we are not checking for keyboard input now, |
4746 | do process events (but don't run any timers). | |
4747 | This is so that X events will be processed. | |
0c9960e9 | 4748 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4749 | That would causes delays in pasting selections, for example. |
4750 | ||
4751 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4752 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4753 | { |
4754 | swallow_events (do_display); | |
0c9960e9 | 4755 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4756 | if (detect_input_pending ()) |
4757 | break; | |
5d5beb62 | 4758 | #endif |
0c9960e9 | 4759 | } |
f854a00b | 4760 | |
84aa3ace | 4761 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4762 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4763 | break; |
4764 | ||
4746118a | 4765 | #ifdef SIGIO |
5d5beb62 | 4766 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4767 | go read it. This can happen with X on BSD after logging out. |
4768 | In that case, there really is no input and no SIGIO, | |
4769 | but select says there is input. */ | |
4770 | ||
b89a415a | 4771 | if (read_kbd && interrupt_input |
2601f59e | 4772 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4773 | kill (getpid (), SIGIO); |
4746118a | 4774 | #endif |
d0d6b7c5 | 4775 | |
d0d6b7c5 JB |
4776 | if (! wait_proc) |
4777 | got_some_input |= nfds > 0; | |
4778 | ||
32676c08 JB |
4779 | /* If checking input just got us a size-change event from X, |
4780 | obey it now if we should. */ | |
b89a415a | 4781 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4782 | do_pending_window_change (0); |
32676c08 | 4783 | |
a9f2c884 | 4784 | /* Check for data from a process. */ |
dd2a17ab KS |
4785 | if (no_avail || nfds == 0) |
4786 | continue; | |
4787 | ||
3fad2ad2 J |
4788 | for (channel = 0; channel <= max_input_desc; ++channel) |
4789 | { | |
4790 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
4791 | if (FD_ISSET (channel, &Available) | |
4792 | && d->func != 0 | |
4793 | && (d->condition & FOR_READ) != 0) | |
4794 | d->func (channel, d->data, 1); | |
4795 | if (FD_ISSET (channel, &write_mask) | |
4796 | && d->func != 0 | |
4797 | && (d->condition & FOR_WRITE) != 0) | |
4798 | d->func (channel, d->data, 0); | |
4799 | } | |
4800 | ||
a69281ff | 4801 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4802 | { |
a69281ff | 4803 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4804 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4805 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4806 | { |
4807 | int nread; | |
4808 | ||
4809 | /* If waiting for this channel, arrange to return as | |
4810 | soon as no more input to be processed. No more | |
4811 | waiting. */ | |
4812 | if (wait_channel == channel) | |
4813 | { | |
a9f2c884 | 4814 | wait_channel = -1; |
d35af63c | 4815 | nsecs = -1; |
d0d6b7c5 JB |
4816 | got_some_input = 1; |
4817 | } | |
4818 | proc = chan_process[channel]; | |
4819 | if (NILP (proc)) | |
4820 | continue; | |
4821 | ||
e690ca94 | 4822 | /* If this is a server stream socket, accept connection. */ |
4d2b044c | 4823 | if (EQ (XPROCESS (proc)->status, Qlisten)) |
e690ca94 KS |
4824 | { |
4825 | server_accept_connection (proc, channel); | |
4826 | continue; | |
4827 | } | |
4828 | ||
d0d6b7c5 JB |
4829 | /* Read data from the process, starting with our |
4830 | buffered-ahead character if we have one. */ | |
4831 | ||
4832 | nread = read_process_output (proc, channel); | |
4833 | if (nread > 0) | |
4834 | { | |
4835 | /* Since read_process_output can run a filter, | |
4836 | which can call accept-process-output, | |
4837 | don't try to read from any other processes | |
4838 | before doing the select again. */ | |
4839 | FD_ZERO (&Available); | |
4840 | ||
4841 | if (do_display) | |
3007ebfb | 4842 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4843 | } |
4844 | #ifdef EWOULDBLOCK | |
4845 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4846 | ; | |
0b75e9a4 | 4847 | #endif |
89d7280d RS |
4848 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4849 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4850 | #ifdef O_NONBLOCK |
4851 | else if (nread == -1 && errno == EAGAIN) | |
4852 | ; | |
4853 | #else | |
4854 | #ifdef O_NDELAY | |
4855 | else if (nread == -1 && errno == EAGAIN) | |
4856 | ; | |
4857 | /* Note that we cannot distinguish between no input | |
4858 | available now and a closed pipe. | |
4859 | With luck, a closed pipe will be accompanied by | |
4860 | subprocess termination and SIGCHLD. */ | |
d888760c | 4861 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4862 | ; |
4740825c KS |
4863 | #endif /* O_NDELAY */ |
4864 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4865 | #ifdef HAVE_PTYS |
4866 | /* On some OSs with ptys, when the process on one end of | |
4867 | a pty exits, the other end gets an error reading with | |
4868 | errno = EIO instead of getting an EOF (0 bytes read). | |
4869 | Therefore, if we get an error reading and errno = | |
4870 | EIO, just continue, because the child process has | |
4871 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4872 | get a SIGCHLD). |
4873 | ||
4874 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4875 | got lost. So raise the signal again just in case. |
5651af6d | 4876 | It can't hurt. */ |
d0d6b7c5 | 4877 | else if (nread == -1 && errno == EIO) |
4740825c | 4878 | { |
f30d612a CY |
4879 | struct Lisp_Process *p = XPROCESS (proc); |
4880 | ||
4881 | /* Clear the descriptor now, so we only raise the | |
4882 | signal once. */ | |
4883 | FD_CLR (channel, &input_wait_mask); | |
4884 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4885 | ||
4886 | if (p->pid == -2) | |
4887 | { | |
4888 | /* If the EIO occurs on a pty, sigchld_handler's | |
13294f95 | 4889 | waitpid() will not find the process object to |
f30d612a CY |
4890 | delete. Do it here. */ |
4891 | p->tick = ++process_tick; | |
21238f11 | 4892 | PSET (p, status, Qfailed); |
f30d612a CY |
4893 | } |
4894 | else | |
4895 | kill (getpid (), SIGCHLD); | |
4740825c KS |
4896 | } |
4897 | #endif /* HAVE_PTYS */ | |
5063c0e1 TN |
4898 | /* If we can detect process termination, don't consider the |
4899 | process gone just because its pipe is closed. */ | |
d0d6b7c5 | 4900 | #ifdef SIGCHLD |
d888760c | 4901 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4902 | ; |
4903 | #endif | |
4904 | else | |
4905 | { | |
4906 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4907 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4908 | deactivate_process (proc); |
6bfd98e7 | 4909 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 | 4910 | update_status (XPROCESS (proc)); |
4d2b044c | 4911 | if (EQ (XPROCESS (proc)->status, Qrun)) |
21238f11 DA |
4912 | PSET (XPROCESS (proc), status, |
4913 | Fcons (Qexit, Fcons (make_number (256), Qnil))); | |
d0d6b7c5 JB |
4914 | } |
4915 | } | |
177c0ea7 | 4916 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 4917 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 4918 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
4919 | { |
4920 | struct Lisp_Process *p; | |
dd2a17ab KS |
4921 | |
4922 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 4923 | FD_CLR (channel, &write_mask); |
dd2a17ab KS |
4924 | if (--num_pending_connects < 0) |
4925 | abort (); | |
4926 | ||
4927 | proc = chan_process[channel]; | |
4928 | if (NILP (proc)) | |
4929 | continue; | |
4930 | ||
4931 | p = XPROCESS (proc); | |
4932 | ||
4933 | #ifdef GNU_LINUX | |
4934 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 4935 | So only use it on systems where it is known to work. */ |
dd2a17ab | 4936 | { |
401bf9b4 | 4937 | socklen_t xlen = sizeof (xerrno); |
ed3751c8 | 4938 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
dd2a17ab KS |
4939 | xerrno = errno; |
4940 | } | |
4941 | #else | |
44c887be PJ |
4942 | { |
4943 | struct sockaddr pname; | |
ed3751c8 | 4944 | int pnamelen = sizeof (pname); |
44c887be PJ |
4945 | |
4946 | /* If connection failed, getpeername will fail. */ | |
4947 | xerrno = 0; | |
ed3751c8 | 4948 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
4949 | { |
4950 | /* Obtain connect failure code through error slippage. */ | |
4951 | char dummy; | |
dd2a17ab | 4952 | xerrno = errno; |
ed3751c8 | 4953 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
4954 | xerrno = errno; |
4955 | } | |
4956 | } | |
dd2a17ab KS |
4957 | #endif |
4958 | if (xerrno) | |
4959 | { | |
60f0fb11 | 4960 | p->tick = ++process_tick; |
21238f11 DA |
4961 | PSET (p, status, |
4962 | Fcons (Qfailed, Fcons (make_number (xerrno), Qnil))); | |
dd2a17ab KS |
4963 | deactivate_process (proc); |
4964 | } | |
4965 | else | |
4966 | { | |
21238f11 | 4967 | PSET (p, status, Qrun); |
dd2a17ab KS |
4968 | /* Execute the sentinel here. If we had relied on |
4969 | status_notify to do it later, it will read input | |
4970 | from the process before calling the sentinel. */ | |
4971 | exec_sentinel (proc, build_string ("open\n")); | |
4d2b044c | 4972 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 4973 | { |
60f0fb11 SM |
4974 | FD_SET (p->infd, &input_wait_mask); |
4975 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
4976 | } |
4977 | } | |
4978 | } | |
4979 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4980 | } /* end for each file descriptor */ |
4981 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4982 | |
2beb96f9 | 4983 | unbind_to (count, Qnil); |
d430ee71 | 4984 | |
ffd56f97 JB |
4985 | /* If calling from keyboard input, do not quit |
4986 | since we want to return C-g as an input character. | |
4987 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4988 | if (read_kbd >= 0) |
ffd56f97 JB |
4989 | { |
4990 | /* Prevent input_pending from remaining set if we quit. */ | |
4991 | clear_input_pending (); | |
4992 | QUIT; | |
4993 | } | |
efa2a55c | 4994 | |
d0d6b7c5 JB |
4995 | return got_some_input; |
4996 | } | |
4997 | \f | |
3b9a3dfa RS |
4998 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4999 | ||
5000 | static Lisp_Object | |
d3da34e0 | 5001 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5002 | { |
70949dac | 5003 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5004 | } |
5005 | ||
5006 | static Lisp_Object | |
b93aacde | 5007 | read_process_output_error_handler (Lisp_Object error_val) |
3b9a3dfa | 5008 | { |
b93aacde | 5009 | cmd_error_internal (error_val, "error in process filter: "); |
3b9a3dfa RS |
5010 | Vinhibit_quit = Qt; |
5011 | update_echo_area (); | |
833ba342 | 5012 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5013 | return Qt; |
3b9a3dfa RS |
5014 | } |
5015 | ||
d0d6b7c5 JB |
5016 | /* Read pending output from the process channel, |
5017 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5018 | Yield number of decoded characters read. |
d0d6b7c5 | 5019 | |
116c423c | 5020 | This function reads at most 4096 characters. |
d0d6b7c5 | 5021 | If you want to read all available subprocess output, |
0fa1789e KH |
5022 | you must call it repeatedly until it returns zero. |
5023 | ||
5024 | The characters read are decoded according to PROC's coding-system | |
5025 | for decoding. */ | |
d0d6b7c5 | 5026 | |
ff6daed3 | 5027 | static int |
d3da34e0 | 5028 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5029 | { |
368f4090 | 5030 | register ssize_t nbytes; |
d0d6b7c5 | 5031 | char *chars; |
d0d6b7c5 | 5032 | register Lisp_Object outstream; |
d0d6b7c5 | 5033 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 5034 | register ptrdiff_t opoint; |
c7580538 | 5035 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5036 | int carryover = p->decoding_carryover; |
116c423c | 5037 | int readmax = 4096; |
d311d28c | 5038 | ptrdiff_t count = SPECPDL_INDEX (); |
3a4fa2f2 | 5039 | Lisp_Object odeactivate; |
d0d6b7c5 | 5040 | |
38182d90 | 5041 | chars = alloca (carryover + readmax); |
e7fbaa65 KH |
5042 | if (carryover) |
5043 | /* See the comment above. */ | |
4d2b044c | 5044 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5045 | |
e690ca94 KS |
5046 | #ifdef DATAGRAM_SOCKETS |
5047 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5048 | if (DATAGRAM_CHAN_P (channel)) | |
5049 | { | |
401bf9b4 | 5050 | socklen_t len = datagram_address[channel].len; |
39b1da20 | 5051 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5052 | 0, datagram_address[channel].sa, &len); |
5053 | } | |
5054 | else | |
5055 | #endif | |
6b61353c | 5056 | { |
82eaa333 PE |
5057 | int buffered = 0 <= proc_buffered_char[channel]; |
5058 | if (buffered) | |
5059 | { | |
5060 | chars[carryover] = proc_buffered_char[channel]; | |
5061 | proc_buffered_char[channel] = -1; | |
5062 | } | |
8af55556 | 5063 | #ifdef HAVE_GNUTLS |
959ad23f AS |
5064 | if (p->gnutls_p) |
5065 | nbytes = emacs_gnutls_read (p, chars + carryover + buffered, | |
82eaa333 | 5066 | readmax - buffered); |
8af55556 TZ |
5067 | else |
5068 | #endif | |
82eaa333 PE |
5069 | nbytes = emacs_read (channel, chars + carryover + buffered, |
5070 | readmax - buffered); | |
6b61353c | 5071 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5072 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5073 | { |
60f0fb11 | 5074 | int delay = p->read_output_delay; |
6b61353c KH |
5075 | if (nbytes < 256) |
5076 | { | |
5077 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5078 | { | |
5079 | if (delay == 0) | |
5080 | process_output_delay_count++; | |
5081 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5082 | } | |
5083 | } | |
82eaa333 | 5084 | else if (delay > 0 && nbytes == readmax - buffered) |
6b61353c KH |
5085 | { |
5086 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5087 | if (delay == 0) | |
5088 | process_output_delay_count--; | |
5089 | } | |
60f0fb11 | 5090 | p->read_output_delay = delay; |
6b61353c KH |
5091 | if (delay) |
5092 | { | |
60f0fb11 | 5093 | p->read_output_skip = 1; |
6b61353c KH |
5094 | process_output_skip = 1; |
5095 | } | |
5096 | } | |
5097 | #endif | |
fe07cdfa PE |
5098 | nbytes += buffered; |
5099 | nbytes += buffered && nbytes <= 0; | |
d0d6b7c5 | 5100 | } |
d0d6b7c5 | 5101 | |
60f0fb11 | 5102 | p->decoding_carryover = 0; |
ca65341e | 5103 | |
ed7a4b2d | 5104 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5105 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5106 | if (nbytes <= 0) |
5107 | { | |
5108 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5109 | return nbytes; | |
5110 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5111 | } | |
d0d6b7c5 | 5112 | |
1d2fc612 | 5113 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5114 | nbytes += carryover; |
0fa1789e | 5115 | |
3a4fa2f2 SM |
5116 | odeactivate = Vdeactivate_mark; |
5117 | /* There's no good reason to let process filters change the current | |
5118 | buffer, and many callers of accept-process-output, sit-for, and | |
5119 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 5120 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
3a4fa2f2 | 5121 | |
1d2fc612 | 5122 | /* Read and dispose of the process output. */ |
4d2b044c | 5123 | outstream = p->filter; |
d0d6b7c5 JB |
5124 | if (!NILP (outstream)) |
5125 | { | |
1d2fc612 | 5126 | Lisp_Object text; |
4da2f5be | 5127 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5128 | int waiting = waiting_for_user_input_p; |
30c78175 | 5129 | |
dfc21838 RS |
5130 | /* No need to gcpro these, because all we do with them later |
5131 | is test them for EQness, and none of them should be a string. */ | |
aba7731a PE |
5132 | #if 0 |
5133 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 5134 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 5135 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 5136 | #endif |
30c78175 | 5137 | |
3a4fa2f2 SM |
5138 | /* We inhibit quit here instead of just catching it so that |
5139 | hitting ^G when a filter happens to be running won't screw | |
5140 | it up. */ | |
d0d6b7c5 | 5141 | specbind (Qinhibit_quit, Qt); |
6545aada | 5142 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5143 | |
4da2f5be RS |
5144 | /* In case we get recursively called, |
5145 | and we already saved the match data nonrecursively, | |
5146 | save the same match data in safely recursive fashion. */ | |
5147 | if (outer_running_asynch_code) | |
5148 | { | |
5149 | Lisp_Object tem; | |
5150 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5151 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5152 | restore_search_regs (); | |
5153 | record_unwind_save_match_data (); | |
5154 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5155 | } |
5156 | ||
5157 | /* For speed, if a search happens within this code, | |
5158 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5159 | running_asynch_code = 1; |
4da2f5be | 5160 | |
400a67ff | 5161 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 | 5162 | text = coding->dst_object; |
5bbf78c1 | 5163 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5164 | /* A new coding system might be found. */ |
4d2b044c | 5165 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5166 | { |
21238f11 | 5167 | PSET (p, decode_coding_system, Vlast_coding_system_used); |
ed7a4b2d KH |
5168 | |
5169 | /* Don't call setup_coding_system for | |
5170 | proc_decode_coding_system[channel] here. It is done in | |
5171 | detect_coding called via decode_coding above. */ | |
5172 | ||
5173 | /* If a coding system for encoding is not yet decided, we set | |
5174 | it as the same as coding-system for decoding. | |
5175 | ||
5176 | But, before doing that we must check if | |
5177 | proc_encode_coding_system[p->outfd] surely points to a | |
5178 | valid memory because p->outfd will be changed once EOF is | |
5179 | sent to the process. */ | |
4d2b044c | 5180 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5181 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5182 | { |
21238f11 | 5183 | PSET (p, encode_coding_system, |
4d2b044c DA |
5184 | coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); |
5185 | setup_coding_system (p->encode_coding_system, | |
60f0fb11 | 5186 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5187 | } |
5188 | } | |
51c6067d | 5189 | |
dd8c7a53 KH |
5190 | if (coding->carryover_bytes > 0) |
5191 | { | |
4d2b044c | 5192 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
21238f11 | 5193 | PSET (p, decoding_buf, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5194 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5195 | coding->carryover_bytes); |
8c406a9b | 5196 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5197 | } |
e430e5ba | 5198 | if (SBYTES (text) > 0) |
963b492b SM |
5199 | /* FIXME: It's wrong to wrap or not based on debug-on-error, and |
5200 | sometimes it's simply wrong to wrap (e.g. when called from | |
5201 | accept-process-output). */ | |
dd97db06 KH |
5202 | internal_condition_case_1 (read_process_output_call, |
5203 | Fcons (outstream, | |
5204 | Fcons (proc, Fcons (text, Qnil))), | |
5205 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5206 | read_process_output_error_handler); | |
4da2f5be RS |
5207 | |
5208 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5209 | restore_search_regs (); |
4da2f5be | 5210 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5211 | |
bbce7d72 RS |
5212 | /* Restore waiting_for_user_input_p as it was |
5213 | when we were called, in case the filter clobbered it. */ | |
5214 | waiting_for_user_input_p = waiting; | |
5215 | ||
7973cfa8 RS |
5216 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5217 | because we might have changed minor modes or other things | |
5218 | that affect key bindings. */ | |
dfc21838 RS |
5219 | if (! EQ (Fcurrent_buffer (), obuffer) |
5220 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5221 | #endif |
927e08be RS |
5222 | /* But do it only if the caller is actually going to read events. |
5223 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5224 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5225 | if (waiting_for_user_input_p == -1) |
5226 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5227 | } |
5228 | ||
5229 | /* If no filter, write into buffer if it isn't dead. */ | |
4d2b044c | 5230 | else if (!NILP (p->buffer) && !NILP (BVAR (XBUFFER (p->buffer), name))) |
d0d6b7c5 | 5231 | { |
b0310da4 | 5232 | Lisp_Object old_read_only; |
d311d28c PE |
5233 | ptrdiff_t old_begv, old_zv; |
5234 | ptrdiff_t old_begv_byte, old_zv_byte; | |
5235 | ptrdiff_t before, before_byte; | |
5236 | ptrdiff_t opoint_byte; | |
ed7a4b2d | 5237 | Lisp_Object text; |
926b7e5e | 5238 | struct buffer *b; |
30c78175 | 5239 | |
4d2b044c | 5240 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5241 | opoint = PT; |
d8a2934e | 5242 | opoint_byte = PT_BYTE; |
4b4deea2 | 5243 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5244 | old_begv = BEGV; |
5245 | old_zv = ZV; | |
d8a2934e RS |
5246 | old_begv_byte = BEGV_BYTE; |
5247 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5248 | |
4b4deea2 | 5249 | BVAR (current_buffer, read_only) = Qnil; |
d0d6b7c5 JB |
5250 | |
5251 | /* Insert new output into buffer | |
5252 | at the current end-of-output marker, | |
5253 | thus preserving logical ordering of input and output. */ | |
4d2b044c | 5254 | if (XMARKER (p->mark)->buffer) |
3193acd2 | 5255 | SET_PT_BOTH (clip_to_bounds (BEGV, |
4d2b044c | 5256 | marker_position (p->mark), ZV), |
3193acd2 | 5257 | clip_to_bounds (BEGV_BYTE, |
4d2b044c | 5258 | marker_byte_position (p->mark), |
d8a2934e | 5259 | ZV_BYTE)); |
d0d6b7c5 | 5260 | else |
d8a2934e | 5261 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5262 | before = PT; |
d8a2934e | 5263 | before_byte = PT_BYTE; |
b0310da4 JB |
5264 | |
5265 | /* If the output marker is outside of the visible region, save | |
5266 | the restriction and widen. */ | |
6ec8bbd2 | 5267 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5268 | Fwiden (); |
5269 | ||
400a67ff | 5270 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 KH |
5271 | text = coding->dst_object; |
5272 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5273 | /* A new coding system might be found. See the comment in the |
5274 | similar code in the previous `if' block. */ | |
4d2b044c | 5275 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5276 | { |
21238f11 | 5277 | PSET (p, decode_coding_system, Vlast_coding_system_used); |
4d2b044c | 5278 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5279 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5280 | { |
21238f11 | 5281 | PSET (p, encode_coding_system, |
4d2b044c DA |
5282 | coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); |
5283 | setup_coding_system (p->encode_coding_system, | |
60f0fb11 | 5284 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5285 | } |
5286 | } | |
dd8c7a53 KH |
5287 | if (coding->carryover_bytes > 0) |
5288 | { | |
4d2b044c | 5289 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
21238f11 | 5290 | PSET (p, decoding_buf, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5291 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5292 | coding->carryover_bytes); |
8c406a9b | 5293 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5294 | } |
d69864bf | 5295 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5296 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5297 | != ! STRING_MULTIBYTE (text)) |
5298 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5299 | ? Fstring_as_unibyte (text) |
03f04413 | 5300 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5301 | /* Insert before markers in case we are inserting where |
5302 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5303 | insert_from_string_before_markers (text, 0, 0, |
5304 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5305 | |
926b7e5e GM |
5306 | /* Make sure the process marker's position is valid when the |
5307 | process buffer is changed in the signal_after_change above. | |
5308 | W3 is known to do that. */ | |
4d2b044c DA |
5309 | if (BUFFERP (p->buffer) |
5310 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5311 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
926b7e5e | 5312 | else |
4d2b044c | 5313 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
b0310da4 | 5314 | |
d0d6b7c5 JB |
5315 | update_mode_lines++; |
5316 | ||
12ca5cdf RS |
5317 | /* Make sure opoint and the old restrictions |
5318 | float ahead of any new text just as point would. */ | |
5319 | if (opoint >= before) | |
d8a2934e RS |
5320 | { |
5321 | opoint += PT - before; | |
5322 | opoint_byte += PT_BYTE - before_byte; | |
5323 | } | |
12ca5cdf | 5324 | if (old_begv > before) |
d8a2934e RS |
5325 | { |
5326 | old_begv += PT - before; | |
5327 | old_begv_byte += PT_BYTE - before_byte; | |
5328 | } | |
12ca5cdf | 5329 | if (old_zv >= before) |
d8a2934e RS |
5330 | { |
5331 | old_zv += PT - before; | |
5332 | old_zv_byte += PT_BYTE - before_byte; | |
5333 | } | |
12ca5cdf | 5334 | |
b0310da4 | 5335 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5336 | if (old_begv != BEGV || old_zv != ZV) |
5337 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5338 | |
30c78175 | 5339 | |
4b4deea2 | 5340 | BVAR (current_buffer, read_only) = old_read_only; |
d8a2934e | 5341 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5342 | } |
3a4fa2f2 SM |
5343 | /* Handling the process output should not deactivate the mark. */ |
5344 | Vdeactivate_mark = odeactivate; | |
5345 | ||
5346 | unbind_to (count, Qnil); | |
1d2fc612 | 5347 | return nbytes; |
d0d6b7c5 | 5348 | } |
d0d6b7c5 JB |
5349 | \f |
5350 | /* Sending data to subprocess */ | |
5351 | ||
40ccffa6 PE |
5352 | static jmp_buf send_process_frame; |
5353 | static Lisp_Object process_sent_to; | |
d0d6b7c5 | 5354 | |
006c5daa | 5355 | #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD |
845ca893 | 5356 | static _Noreturn void send_process_trap (int); |
006c5daa PE |
5357 | #endif |
5358 | ||
9af30bdf | 5359 | static void |
d3da34e0 | 5360 | send_process_trap (int ignore) |
d0d6b7c5 | 5361 | { |
333f1b6f | 5362 | SIGNAL_THREAD_CHECK (SIGPIPE); |
c8f44005 | 5363 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5364 | longjmp (send_process_frame, 1); |
5365 | } | |
5366 | ||
20ca2e94 TN |
5367 | /* In send_process, when a write fails temporarily, |
5368 | wait_reading_process_output is called. It may execute user code, | |
5369 | e.g. timers, that attempts to write new data to the same process. | |
5370 | We must ensure that data is sent in the right order, and not | |
5371 | interspersed half-completed with other writes (Bug#10815). This is | |
5372 | handled by the write_queue element of struct process. It is a list | |
5373 | with each entry having the form | |
5374 | ||
5375 | (string . (offset . length)) | |
5376 | ||
5377 | where STRING is a lisp string, OFFSET is the offset into the | |
5378 | string's byte sequence from which we should begin to send, and | |
5379 | LENGTH is the number of bytes left to send. */ | |
5380 | ||
5381 | /* Create a new entry in write_queue. | |
5382 | INPUT_OBJ should be a buffer, string Qt, or Qnil. | |
5383 | BUF is a pointer to the string sequence of the input_obj or a C | |
5384 | string in case of Qt or Qnil. */ | |
5385 | ||
5386 | static void | |
5387 | write_queue_push (struct Lisp_Process *p, Lisp_Object input_obj, | |
7ea2b339 | 5388 | const char *buf, ptrdiff_t len, int front) |
20ca2e94 | 5389 | { |
7ea2b339 | 5390 | ptrdiff_t offset; |
20ca2e94 TN |
5391 | Lisp_Object entry, obj; |
5392 | ||
5393 | if (STRINGP (input_obj)) | |
5394 | { | |
5395 | offset = buf - SSDATA (input_obj); | |
5396 | obj = input_obj; | |
5397 | } | |
5398 | else | |
5399 | { | |
5400 | offset = 0; | |
5401 | obj = make_unibyte_string (buf, len); | |
5402 | } | |
5403 | ||
5404 | entry = Fcons (obj, Fcons (make_number (offset), make_number (len))); | |
5405 | ||
5406 | if (front) | |
4d2b044c | 5407 | PSET (p, write_queue, Fcons (entry, p->write_queue)); |
20ca2e94 | 5408 | else |
4d2b044c | 5409 | PSET (p, write_queue, nconc2 (p->write_queue, Fcons (entry, Qnil))); |
20ca2e94 TN |
5410 | } |
5411 | ||
5412 | /* Remove the first element in the write_queue of process P, put its | |
5413 | contents in OBJ, BUF and LEN, and return non-zero. If the | |
5414 | write_queue is empty, return zero. */ | |
5415 | ||
5416 | static int | |
5417 | write_queue_pop (struct Lisp_Process *p, Lisp_Object *obj, | |
7ea2b339 | 5418 | const char **buf, ptrdiff_t *len) |
20ca2e94 TN |
5419 | { |
5420 | Lisp_Object entry, offset_length; | |
7ea2b339 | 5421 | ptrdiff_t offset; |
20ca2e94 | 5422 | |
4d2b044c | 5423 | if (NILP (p->write_queue)) |
20ca2e94 TN |
5424 | return 0; |
5425 | ||
4d2b044c DA |
5426 | entry = XCAR (p->write_queue); |
5427 | PSET (p, write_queue, XCDR (p->write_queue)); | |
20ca2e94 TN |
5428 | |
5429 | *obj = XCAR (entry); | |
5430 | offset_length = XCDR (entry); | |
5431 | ||
5432 | *len = XINT (XCDR (offset_length)); | |
5433 | offset = XINT (XCAR (offset_length)); | |
7ea2b339 | 5434 | *buf = SSDATA (*obj) + offset; |
20ca2e94 TN |
5435 | |
5436 | return 1; | |
5437 | } | |
5438 | ||
4556b700 RS |
5439 | /* Send some data to process PROC. |
5440 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5441 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5442 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5443 | |
a92e4183 KH |
5444 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5445 | for encoding before it is sent. | |
1fb0098c GM |
5446 | |
5447 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5448 | |
ff6daed3 | 5449 | static void |
400a67ff | 5450 | send_process (volatile Lisp_Object proc, const char *volatile buf, |
d311d28c | 5451 | volatile ptrdiff_t len, volatile Lisp_Object object) |
d0d6b7c5 | 5452 | { |
ecd1f654 | 5453 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5454 | struct Lisp_Process *p = XPROCESS (proc); |
368f4090 | 5455 | ssize_t rv; |
0fa1789e | 5456 | struct coding_system *coding; |
9af30bdf | 5457 | void (*volatile old_sigpipe) (int); |
6044e593 | 5458 | |
6bfd98e7 | 5459 | if (p->raw_status_new) |
6b61353c | 5460 | update_status (p); |
4d2b044c DA |
5461 | if (! EQ (p->status, Qrun)) |
5462 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5463 | if (p->outfd < 0) |
4d2b044c | 5464 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5465 | |
60f0fb11 | 5466 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5467 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5468 | |
ed7a4b2d KH |
5469 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5470 | || (BUFFERP (object) | |
4b4deea2 | 5471 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5472 | || EQ (object, Qt)) |
278bfdd6 | 5473 | { |
21238f11 | 5474 | PSET (p, encode_coding_system, |
4d2b044c DA |
5475 | complement_process_encoding_system (p->encode_coding_system)); |
5476 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) | |
fcaf8878 KH |
5477 | { |
5478 | /* The coding system for encoding was changed to raw-text | |
5479 | because we sent a unibyte text previously. Now we are | |
5480 | sending a multibyte text, thus we must encode it by the | |
5481 | original coding system specified for the current process. | |
5482 | ||
da6062e6 PE |
5483 | Another reason we come here is that the coding system |
5484 | was just complemented and a new one was returned by | |
fcaf8878 | 5485 | complement_process_encoding_system. */ |
4d2b044c DA |
5486 | setup_coding_system (p->encode_coding_system, coding); |
5487 | Vlast_coding_system_used = p->encode_coding_system; | |
fcaf8878 | 5488 | } |
e08bbb84 | 5489 | coding->src_multibyte = 1; |
278bfdd6 KH |
5490 | } |
5491 | else | |
5492 | { | |
a0241d01 | 5493 | coding->src_multibyte = 0; |
a92e4183 KH |
5494 | /* For sending a unibyte text, character code conversion should |
5495 | not take place but EOL conversion should. So, setup raw-text | |
5496 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5497 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5498 | { |
5499 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5500 | { | |
5501 | /* But, before changing the coding, we must flush out data. */ | |
5502 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5503 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5504 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5505 | } |
5bbf78c1 KH |
5506 | setup_coding_system (raw_text_coding_system |
5507 | (Vlast_coding_system_used), | |
5508 | coding); | |
e08bbb84 | 5509 | coding->src_multibyte = 0; |
a92e4183 | 5510 | } |
278bfdd6 | 5511 | } |
a4a37e65 KH |
5512 | coding->dst_multibyte = 0; |
5513 | ||
ed7a4b2d | 5514 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5515 | { |
5bbf78c1 | 5516 | coding->dst_object = Qt; |
ed7a4b2d | 5517 | if (BUFFERP (object)) |
0fa1789e | 5518 | { |
d311d28c PE |
5519 | ptrdiff_t from_byte, from, to; |
5520 | ptrdiff_t save_pt, save_pt_byte; | |
5bbf78c1 KH |
5521 | struct buffer *cur = current_buffer; |
5522 | ||
5523 | set_buffer_internal (XBUFFER (object)); | |
5524 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5525 | ||
400a67ff | 5526 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5527 | from = BYTE_TO_CHAR (from_byte); |
5528 | to = BYTE_TO_CHAR (from_byte + len); | |
5529 | TEMP_SET_PT_BOTH (from, from_byte); | |
5530 | encode_coding_object (coding, object, from, from_byte, | |
5531 | to, from_byte + len, Qt); | |
5532 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5533 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5534 | } |
5535 | else if (STRINGP (object)) | |
5536 | { | |
550c8289 KH |
5537 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5538 | SBYTES (object), Qt); | |
0fa1789e | 5539 | } |
5bbf78c1 | 5540 | else |
452294c2 | 5541 | { |
5bbf78c1 KH |
5542 | coding->dst_object = make_unibyte_string (buf, len); |
5543 | coding->produced = len; | |
452294c2 | 5544 | } |
ed7a4b2d | 5545 | |
e7fbaa65 | 5546 | len = coding->produced; |
347f3cd3 | 5547 | object = coding->dst_object; |
400a67ff | 5548 | buf = SSDATA (object); |
0fa1789e | 5549 | } |
d0d6b7c5 | 5550 | |
4556b700 RS |
5551 | if (pty_max_bytes == 0) |
5552 | { | |
5553 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5554 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5555 | if (pty_max_bytes < 0) |
5556 | pty_max_bytes = 250; | |
5557 | #else | |
5558 | pty_max_bytes = 250; | |
5559 | #endif | |
5560 | /* Deduct one, to leave space for the eof. */ | |
5561 | pty_max_bytes--; | |
5562 | } | |
5563 | ||
0daad115 GM |
5564 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5565 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5566 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5567 | if (!setjmp (send_process_frame)) |
0daad115 | 5568 | { |
006c5daa | 5569 | p = XPROCESS (proc); /* Repair any setjmp clobbering. */ |
0daad115 | 5570 | process_sent_to = proc; |
20ca2e94 TN |
5571 | |
5572 | /* If there is already data in the write_queue, put the new data | |
5573 | in the back of queue. Otherwise, ignore it. */ | |
4d2b044c | 5574 | if (!NILP (p->write_queue)) |
20ca2e94 TN |
5575 | write_queue_push (p, object, buf, len, 0); |
5576 | ||
5577 | do /* while !NILP (p->write_queue) */ | |
0daad115 | 5578 | { |
7ea2b339 | 5579 | ptrdiff_t cur_len = -1; |
20ca2e94 TN |
5580 | const char *cur_buf; |
5581 | Lisp_Object cur_object; | |
5582 | ||
5583 | /* If write_queue is empty, ignore it. */ | |
5584 | if (!write_queue_pop (p, &cur_object, &cur_buf, &cur_len)) | |
5585 | { | |
5586 | cur_len = len; | |
5587 | cur_buf = buf; | |
5588 | cur_object = object; | |
5589 | } | |
93b4f699 | 5590 | |
20ca2e94 | 5591 | while (cur_len > 0) |
0daad115 | 5592 | { |
20ca2e94 | 5593 | /* Send this batch, using one or more write calls. */ |
d311d28c | 5594 | ptrdiff_t written = 0; |
60f0fb11 | 5595 | int outfd = p->outfd; |
9af30bdf | 5596 | old_sigpipe = (void (*) (int)) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5597 | #ifdef DATAGRAM_SOCKETS |
5598 | if (DATAGRAM_CHAN_P (outfd)) | |
5599 | { | |
20ca2e94 | 5600 | rv = sendto (outfd, cur_buf, cur_len, |
e690ca94 KS |
5601 | 0, datagram_address[outfd].sa, |
5602 | datagram_address[outfd].len); | |
273a5f82 PE |
5603 | if (0 <= rv) |
5604 | written = rv; | |
5605 | else if (errno == EMSGSIZE) | |
c8f44005 RS |
5606 | { |
5607 | signal (SIGPIPE, old_sigpipe); | |
5608 | report_file_error ("sending datagram", | |
5609 | Fcons (proc, Qnil)); | |
5610 | } | |
e690ca94 KS |
5611 | } |
5612 | else | |
5613 | #endif | |
6b61353c | 5614 | { |
8af55556 | 5615 | #ifdef HAVE_GNUTLS |
959ad23f | 5616 | if (p->gnutls_p) |
20ca2e94 | 5617 | written = emacs_gnutls_write (p, cur_buf, cur_len); |
8af55556 TZ |
5618 | else |
5619 | #endif | |
20ca2e94 | 5620 | written = emacs_write (outfd, cur_buf, cur_len); |
086e8c47 | 5621 | rv = (written ? 0 : -1); |
6b61353c | 5622 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
5623 | if (p->read_output_delay > 0 |
5624 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5625 | { |
60f0fb11 | 5626 | p->read_output_delay = 0; |
6b61353c | 5627 | process_output_delay_count--; |
60f0fb11 | 5628 | p->read_output_skip = 0; |
6b61353c KH |
5629 | } |
5630 | #endif | |
5631 | } | |
0daad115 | 5632 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5633 | |
0daad115 GM |
5634 | if (rv < 0) |
5635 | { | |
5636 | if (0 | |
d0d6b7c5 | 5637 | #ifdef EWOULDBLOCK |
0daad115 | 5638 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5639 | #endif |
5640 | #ifdef EAGAIN | |
0daad115 | 5641 | || errno == EAGAIN |
d0d6b7c5 | 5642 | #endif |
0daad115 | 5643 | ) |
177c0ea7 | 5644 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5645 | that may allow the program |
5646 | to finish doing output and read more. */ | |
5647 | { | |
3433b6bd | 5648 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5649 | /* A gross hack to work around a bug in FreeBSD. |
5650 | In the following sequence, read(2) returns | |
5651 | bogus data: | |
5652 | ||
5653 | write(2) 1022 bytes | |
5654 | write(2) 954 bytes, get EAGAIN | |
5655 | read(2) 1024 bytes in process_read_output | |
5656 | read(2) 11 bytes in process_read_output | |
5657 | ||
5658 | That is, read(2) returns more bytes than have | |
5659 | ever been written successfully. The 1033 bytes | |
5660 | read are the 1022 bytes written successfully | |
5661 | after processing (for example with CRs added if | |
5662 | the terminal is set up that way which it is | |
5663 | here). The same bytes will be seen again in a | |
5664 | later read(2), without the CRs. */ | |
177c0ea7 | 5665 | |
0daad115 GM |
5666 | if (errno == EAGAIN) |
5667 | { | |
5668 | int flags = FWRITE; | |
60f0fb11 | 5669 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5670 | } |
3433b6bd | 5671 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5672 | |
7ea2b339 | 5673 | /* Put what we should have written in wait_queue. */ |
20ca2e94 | 5674 | write_queue_push (p, cur_object, cur_buf, cur_len, 1); |
d35af63c PE |
5675 | wait_reading_process_output (0, 20 * 1000 * 1000, |
5676 | 0, 0, Qnil, NULL, 0); | |
7ea2b339 | 5677 | /* Reread queue, to see what is left. */ |
20ca2e94 | 5678 | break; |
0daad115 GM |
5679 | } |
5680 | else | |
5681 | /* This is a real error. */ | |
5682 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5683 | } | |
20ca2e94 TN |
5684 | cur_buf += written; |
5685 | cur_len -= written; | |
0daad115 | 5686 | } |
0daad115 | 5687 | } |
4d2b044c | 5688 | while (!NILP (p->write_queue)); |
0daad115 | 5689 | } |
d0d6b7c5 JB |
5690 | else |
5691 | { | |
0ff69270 | 5692 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5693 | proc = process_sent_to; |
6b61353c | 5694 | p = XPROCESS (proc); |
6bfd98e7 | 5695 | p->raw_status_new = 0; |
21238f11 | 5696 | PSET (p, status, Fcons (Qexit, Fcons (make_number (256), Qnil))); |
60f0fb11 | 5697 | p->tick = ++process_tick; |
d0d6b7c5 | 5698 | deactivate_process (proc); |
4d2b044c | 5699 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5700 | } |
5701 | } | |
5702 | ||
5703 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5704 | 3, 3, 0, |
5705 | doc: /* Send current contents of region as input to PROCESS. | |
5706 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5707 | nil, indicating the current buffer's process. | |
5708 | Called from program, takes three arguments, PROCESS, START and END. | |
5709 | If the region is more than 500 characters long, | |
5710 | it is sent in several bunches. This may happen even for shorter regions. | |
5711 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5712 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5713 | { |
5714 | Lisp_Object proc; | |
d311d28c | 5715 | ptrdiff_t start1, end1; |
d0d6b7c5 JB |
5716 | |
5717 | proc = get_process (process); | |
5718 | validate_region (&start, &end); | |
1b234f64 KH |
5719 | |
5720 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5721 | move_gap (XINT (start)); | |
5722 | ||
5723 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5724 | end1 = CHAR_TO_BYTE (XINT (end)); | |
400a67ff | 5725 | send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1, |
1b234f64 KH |
5726 | Fcurrent_buffer ()); |
5727 | ||
d0d6b7c5 JB |
5728 | return Qnil; |
5729 | } | |
5730 | ||
5731 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5732 | 2, 2, 0, |
5733 | doc: /* Send PROCESS the contents of STRING as input. | |
5734 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5735 | nil, indicating the current buffer's process. | |
5736 | If STRING is more than 500 characters long, | |
5737 | it is sent in several bunches. This may happen even for shorter strings. | |
5738 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5739 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5740 | { |
5741 | Lisp_Object proc; | |
b7826503 | 5742 | CHECK_STRING (string); |
d0d6b7c5 | 5743 | proc = get_process (process); |
400a67ff | 5744 | send_process (proc, SSDATA (string), |
1b234f64 | 5745 | SBYTES (string), string); |
d0d6b7c5 JB |
5746 | return Qnil; |
5747 | } | |
5748 | \f | |
16782258 JD |
5749 | /* Return the foreground process group for the tty/pty that |
5750 | the process P uses. */ | |
dde14581 | 5751 | static pid_t |
d3da34e0 | 5752 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 | 5753 | { |
dde14581 | 5754 | pid_t gid = -1; |
16782258 | 5755 | |
f3d9532b | 5756 | #ifdef TIOCGPGRP |
4d2b044c | 5757 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5758 | { |
5759 | int fd; | |
5760 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5761 | master side. Try the slave side. */ | |
4d2b044c | 5762 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5763 | |
5764 | if (fd != -1) | |
5765 | { | |
5766 | ioctl (fd, TIOCGPGRP, &gid); | |
5767 | emacs_close (fd); | |
5768 | } | |
5769 | } | |
5770 | #endif /* defined (TIOCGPGRP ) */ | |
5771 | ||
5772 | return gid; | |
5773 | } | |
5774 | ||
b81ea5ef RS |
5775 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5776 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5777 | doc: /* Return t if PROCESS has given the terminal to a child. |
5778 | If the operating system does not make it possible to find out, | |
5779 | return t unconditionally. */) | |
5842a27b | 5780 | (Lisp_Object process) |
b81ea5ef RS |
5781 | { |
5782 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5783 | in a way that will cause returning t. */ | |
dde14581 | 5784 | pid_t gid; |
b81ea5ef RS |
5785 | Lisp_Object proc; |
5786 | struct Lisp_Process *p; | |
5787 | ||
5788 | proc = get_process (process); | |
5789 | p = XPROCESS (proc); | |
5790 | ||
4d2b044c | 5791 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5792 | error ("Process %s is not a subprocess", |
4d2b044c | 5793 | SDATA (p->name)); |
60f0fb11 | 5794 | if (p->infd < 0) |
b81ea5ef | 5795 | error ("Process %s is not active", |
4d2b044c | 5796 | SDATA (p->name)); |
b81ea5ef | 5797 | |
16782258 | 5798 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5799 | |
6bfd98e7 | 5800 | if (gid == p->pid) |
b81ea5ef RS |
5801 | return Qnil; |
5802 | return Qt; | |
5803 | } | |
5804 | \f | |
d0d6b7c5 | 5805 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5806 | If CURRENT_GROUP is t, that means send to the process group |
5807 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5808 | This is used for various commands in shell mode. |
b81ea5ef RS |
5809 | If CURRENT_GROUP is lambda, that means send to the process group |
5810 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5811 | ||
d0d6b7c5 | 5812 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5813 | right away. |
5814 | ||
5815 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5816 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5817 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5818 | |
f9738840 | 5819 | static void |
d3da34e0 JB |
5820 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5821 | int nomsg) | |
d0d6b7c5 JB |
5822 | { |
5823 | Lisp_Object proc; | |
5824 | register struct Lisp_Process *p; | |
dde14581 | 5825 | pid_t gid; |
d0d6b7c5 JB |
5826 | int no_pgrp = 0; |
5827 | ||
5828 | proc = get_process (process); | |
5829 | p = XPROCESS (proc); | |
5830 | ||
4d2b044c | 5831 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5832 | error ("Process %s is not a subprocess", |
4d2b044c | 5833 | SDATA (p->name)); |
60f0fb11 | 5834 | if (p->infd < 0) |
d0d6b7c5 | 5835 | error ("Process %s is not active", |
4d2b044c | 5836 | SDATA (p->name)); |
d0d6b7c5 | 5837 | |
60f0fb11 | 5838 | if (!p->pty_flag) |
d0d6b7c5 JB |
5839 | current_group = Qnil; |
5840 | ||
d0d6b7c5 | 5841 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5842 | if (NILP (current_group)) |
5843 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5844 | gid = p->pid; |
2af70a0c | 5845 | else |
d0d6b7c5 | 5846 | { |
b0310da4 | 5847 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5848 | /* If possible, send signals to the entire pgrp |
5849 | by sending an input character to it. */ | |
b0310da4 | 5850 | |
6be429b1 | 5851 | struct termios t; |
7f916a36 RS |
5852 | cc_t *sig_char = NULL; |
5853 | ||
60f0fb11 | 5854 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5855 | |
5856 | switch (signo) | |
5857 | { | |
5858 | case SIGINT: | |
7f916a36 RS |
5859 | sig_char = &t.c_cc[VINTR]; |
5860 | break; | |
6be429b1 JB |
5861 | |
5862 | case SIGQUIT: | |
7f916a36 RS |
5863 | sig_char = &t.c_cc[VQUIT]; |
5864 | break; | |
6be429b1 JB |
5865 | |
5866 | case SIGTSTP: | |
d0adf46f | 5867 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5868 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5869 | #else |
7f916a36 | 5870 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5871 | #endif |
7f916a36 | 5872 | break; |
6be429b1 JB |
5873 | } |
5874 | ||
ca4313d5 | 5875 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc | 5876 | { |
f990b4e5 | 5877 | send_process (proc, (char *) sig_char, 1, Qnil); |
f1c206fc RS |
5878 | return; |
5879 | } | |
5880 | /* If we can't send the signal with a character, | |
5881 | fall through and send it another way. */ | |
f1c206fc RS |
5882 | |
5883 | /* The code above may fall through if it can't | |
5884 | handle the signal. */ | |
20505336 | 5885 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5886 | |
177c0ea7 | 5887 | #ifdef TIOCGPGRP |
2af70a0c | 5888 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5889 | Otherwise, use the pty to get the pgrp. |
5890 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5891 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5892 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5893 | His patch indicates that if TIOCGPGRP returns an error, then |
5894 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5895 | |
16782258 | 5896 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5897 | |
16782258 JD |
5898 | if (gid == -1) |
5899 | /* If we can't get the information, assume | |
5900 | the shell owns the tty. */ | |
6bfd98e7 | 5901 | gid = p->pid; |
2af70a0c RS |
5902 | |
5903 | /* It is not clear whether anything really can set GID to -1. | |
5904 | Perhaps on some system one of those ioctls can or could do so. | |
5905 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5906 | if (gid == -1) |
5907 | no_pgrp = 1; | |
b0310da4 | 5908 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5909 | /* Can't select pgrps on this system, so we know that |
5910 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5911 | gid = p->pid; |
301c3fe4 | 5912 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5913 | |
5914 | /* If current_group is lambda, and the shell owns the terminal, | |
5915 | don't send any signal. */ | |
6bfd98e7 | 5916 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5917 | return; |
d0d6b7c5 | 5918 | } |
d0d6b7c5 JB |
5919 | |
5920 | switch (signo) | |
5921 | { | |
5922 | #ifdef SIGCONT | |
5923 | case SIGCONT: | |
6bfd98e7 | 5924 | p->raw_status_new = 0; |
21238f11 | 5925 | PSET (p, status, Qrun); |
60f0fb11 | 5926 | p->tick = ++process_tick; |
d0d6b7c5 | 5927 | if (!nomsg) |
e42bdf01 CY |
5928 | { |
5929 | status_notify (NULL); | |
5930 | redisplay_preserve_echo_area (13); | |
5931 | } | |
d0d6b7c5 | 5932 | break; |
301c3fe4 | 5933 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 5934 | case SIGINT: |
d0d6b7c5 | 5935 | case SIGQUIT: |
d0d6b7c5 | 5936 | case SIGKILL: |
60f0fb11 | 5937 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5938 | break; |
5939 | } | |
5940 | ||
5941 | /* If we don't have process groups, send the signal to the immediate | |
5942 | subprocess. That isn't really right, but it's better than any | |
5943 | obvious alternative. */ | |
5944 | if (no_pgrp) | |
5945 | { | |
6bfd98e7 | 5946 | kill (p->pid, signo); |
d0d6b7c5 JB |
5947 | return; |
5948 | } | |
5949 | ||
5950 | /* gid may be a pid, or minus a pgrp's number */ | |
5951 | #ifdef TIOCSIGSEND | |
5952 | if (!NILP (current_group)) | |
16782258 | 5953 | { |
60f0fb11 | 5954 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
5955 | EMACS_KILLPG (gid, signo); |
5956 | } | |
d0d6b7c5 JB |
5957 | else |
5958 | { | |
6bfd98e7 | 5959 | gid = - p->pid; |
d0d6b7c5 JB |
5960 | kill (gid, signo); |
5961 | } | |
301c3fe4 | 5962 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5963 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5964 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5965 | } |
5966 | ||
5967 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5968 | doc: /* Interrupt process PROCESS. |
5969 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5970 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5971 | Second arg CURRENT-GROUP non-nil means send signal to |
5972 | the current process-group of the process's controlling terminal | |
5973 | rather than to the process's own process group. | |
5974 | If the process is a shell, this means interrupt current subjob | |
5975 | rather than the shell. | |
5976 | ||
5977 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5978 | don't send the signal. */) | |
5842a27b | 5979 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5980 | { |
5981 | process_send_signal (process, SIGINT, current_group, 0); | |
5982 | return process; | |
5983 | } | |
5984 | ||
5985 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5986 | doc: /* Kill process PROCESS. May be process or name of one. |
5987 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5988 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5989 | { |
5990 | process_send_signal (process, SIGKILL, current_group, 0); | |
5991 | return process; | |
5992 | } | |
5993 | ||
5994 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5995 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5996 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5997 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5998 | { |
5999 | process_send_signal (process, SIGQUIT, current_group, 0); | |
6000 | return process; | |
6001 | } | |
6002 | ||
6003 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6004 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6005 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6006 | If PROCESS is a network or serial process, inhibit handling of incoming |
6007 | traffic. */) | |
5842a27b | 6008 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6009 | { |
d888760c | 6010 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6011 | { |
6012 | struct Lisp_Process *p; | |
177c0ea7 | 6013 | |
e690ca94 | 6014 | p = XPROCESS (process); |
4d2b044c | 6015 | if (NILP (p->command) |
60f0fb11 | 6016 | && p->infd >= 0) |
e690ca94 | 6017 | { |
60f0fb11 SM |
6018 | FD_CLR (p->infd, &input_wait_mask); |
6019 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 | 6020 | } |
21238f11 | 6021 | PSET (p, command, Qt); |
e690ca94 KS |
6022 | return process; |
6023 | } | |
d0d6b7c5 | 6024 | #ifndef SIGTSTP |
a9a73d6c | 6025 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6026 | #else |
6027 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6028 | #endif | |
6029 | return process; | |
6030 | } | |
6031 | ||
6032 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6033 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6034 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6035 | If PROCESS is a network or serial process, resume handling of incoming |
6036 | traffic. */) | |
5842a27b | 6037 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6038 | { |
d888760c | 6039 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6040 | { |
6041 | struct Lisp_Process *p; | |
6042 | ||
6043 | p = XPROCESS (process); | |
4d2b044c | 6044 | if (EQ (p->command, Qt) |
60f0fb11 | 6045 | && p->infd >= 0 |
4d2b044c | 6046 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
e690ca94 | 6047 | { |
60f0fb11 SM |
6048 | FD_SET (p->infd, &input_wait_mask); |
6049 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6050 | #ifdef WINDOWSNT |
6051 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6052 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 6053 | #else /* not WINDOWSNT */ |
d888760c | 6054 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 6055 | #endif /* not WINDOWSNT */ |
e690ca94 | 6056 | } |
21238f11 | 6057 | PSET (p, command, Qnil); |
e690ca94 KS |
6058 | return process; |
6059 | } | |
d0d6b7c5 JB |
6060 | #ifdef SIGCONT |
6061 | process_send_signal (process, SIGCONT, current_group, 0); | |
6062 | #else | |
a9a73d6c | 6063 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6064 | #endif |
6065 | return process; | |
6066 | } | |
6067 | ||
6068 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6069 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6070 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6071 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6072 | process to signal; in this case, the process need not be a child of |
6073 | this Emacs. | |
fdb82f93 | 6074 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6075 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6076 | { |
6bfd98e7 | 6077 | pid_t pid; |
cdd5ea86 | 6078 | |
cdd5ea86 KS |
6079 | if (STRINGP (process)) |
6080 | { | |
d311d28c PE |
6081 | Lisp_Object tem = Fget_process (process); |
6082 | if (NILP (tem)) | |
cdd5ea86 | 6083 | { |
d44287d4 PE |
6084 | Lisp_Object process_number = |
6085 | string_to_number (SSDATA (process), 10, 1); | |
6086 | if (INTEGERP (process_number) || FLOATP (process_number)) | |
6087 | tem = process_number; | |
cdd5ea86 KS |
6088 | } |
6089 | process = tem; | |
6090 | } | |
d44287d4 | 6091 | else if (!NUMBERP (process)) |
cdd5ea86 | 6092 | process = get_process (process); |
177c0ea7 | 6093 | |
cdd5ea86 KS |
6094 | if (NILP (process)) |
6095 | return process; | |
6096 | ||
d83cf4cc PE |
6097 | if (NUMBERP (process)) |
6098 | CONS_TO_INTEGER (process, pid_t, pid); | |
d44287d4 PE |
6099 | else |
6100 | { | |
6101 | CHECK_PROCESS (process); | |
6102 | pid = XPROCESS (process)->pid; | |
6103 | if (pid <= 0) | |
4d2b044c | 6104 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
d44287d4 | 6105 | } |
4766242d | 6106 | |
59324b1d | 6107 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6108 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6109 | XSETINT (sigcode, VALUE) |
6110 | ||
6111 | if (INTEGERP (sigcode)) | |
d311d28c | 6112 | CHECK_TYPE_RANGED_INTEGER (int, sigcode); |
4766242d RS |
6113 | else |
6114 | { | |
25a48bd0 | 6115 | char *name; |
4766242d | 6116 | |
b7826503 | 6117 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6118 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6119 | |
ed3751c8 | 6120 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6121 | name += 3; |
6122 | ||
4766242d RS |
6123 | if (0) |
6124 | ; | |
59324b1d KS |
6125 | #ifdef SIGUSR1 |
6126 | parse_signal ("usr1", SIGUSR1); | |
6127 | #endif | |
6128 | #ifdef SIGUSR2 | |
6129 | parse_signal ("usr2", SIGUSR2); | |
6130 | #endif | |
6131 | #ifdef SIGTERM | |
6132 | parse_signal ("term", SIGTERM); | |
6133 | #endif | |
4766242d | 6134 | #ifdef SIGHUP |
59324b1d | 6135 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6136 | #endif |
6137 | #ifdef SIGINT | |
59324b1d | 6138 | parse_signal ("int", SIGINT); |
4766242d RS |
6139 | #endif |
6140 | #ifdef SIGQUIT | |
59324b1d | 6141 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6142 | #endif |
6143 | #ifdef SIGILL | |
59324b1d | 6144 | parse_signal ("ill", SIGILL); |
4766242d RS |
6145 | #endif |
6146 | #ifdef SIGABRT | |
59324b1d | 6147 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6148 | #endif |
6149 | #ifdef SIGEMT | |
59324b1d | 6150 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6151 | #endif |
6152 | #ifdef SIGKILL | |
59324b1d | 6153 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6154 | #endif |
6155 | #ifdef SIGFPE | |
59324b1d | 6156 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6157 | #endif |
6158 | #ifdef SIGBUS | |
59324b1d | 6159 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6160 | #endif |
6161 | #ifdef SIGSEGV | |
59324b1d | 6162 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6163 | #endif |
6164 | #ifdef SIGSYS | |
59324b1d | 6165 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6166 | #endif |
6167 | #ifdef SIGPIPE | |
59324b1d | 6168 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6169 | #endif |
6170 | #ifdef SIGALRM | |
59324b1d | 6171 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6172 | #endif |
6173 | #ifdef SIGURG | |
59324b1d | 6174 | parse_signal ("urg", SIGURG); |
4766242d RS |
6175 | #endif |
6176 | #ifdef SIGSTOP | |
59324b1d | 6177 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6178 | #endif |
6179 | #ifdef SIGTSTP | |
59324b1d | 6180 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6181 | #endif |
6182 | #ifdef SIGCONT | |
59324b1d | 6183 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6184 | #endif |
6185 | #ifdef SIGCHLD | |
59324b1d | 6186 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6187 | #endif |
6188 | #ifdef SIGTTIN | |
59324b1d | 6189 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6190 | #endif |
6191 | #ifdef SIGTTOU | |
59324b1d | 6192 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6193 | #endif |
6194 | #ifdef SIGIO | |
59324b1d | 6195 | parse_signal ("io", SIGIO); |
4766242d RS |
6196 | #endif |
6197 | #ifdef SIGXCPU | |
59324b1d | 6198 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6199 | #endif |
6200 | #ifdef SIGXFSZ | |
59324b1d | 6201 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6202 | #endif |
6203 | #ifdef SIGVTALRM | |
59324b1d | 6204 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6205 | #endif |
6206 | #ifdef SIGPROF | |
59324b1d | 6207 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6208 | #endif |
6209 | #ifdef SIGWINCH | |
59324b1d | 6210 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6211 | #endif |
6212 | #ifdef SIGINFO | |
59324b1d | 6213 | parse_signal ("info", SIGINFO); |
4766242d RS |
6214 | #endif |
6215 | else | |
9fa195a2 | 6216 | error ("Undefined signal name %s", name); |
4766242d RS |
6217 | } |
6218 | ||
59324b1d | 6219 | #undef parse_signal |
4766242d | 6220 | |
6bfd98e7 | 6221 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6222 | } |
6223 | ||
6224 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6225 | doc: /* Make PROCESS see end-of-file in its input. |
6226 | EOF comes after any text already sent to it. | |
6227 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6228 | nil, indicating the current buffer's process. | |
6229 | If PROCESS is a network connection, or is a process communicating | |
6230 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6231 | text to PROCESS after you call this function. |
6232 | If PROCESS is a serial process, wait until all output written to the | |
6233 | process has been transmitted to the serial port. */) | |
5842a27b | 6234 | (Lisp_Object process) |
d0d6b7c5 JB |
6235 | { |
6236 | Lisp_Object proc; | |
de7fbd09 | 6237 | struct coding_system *coding; |
d0d6b7c5 | 6238 | |
e690ca94 KS |
6239 | if (DATAGRAM_CONN_P (process)) |
6240 | return process; | |
6241 | ||
d0d6b7c5 | 6242 | proc = get_process (process); |
60f0fb11 | 6243 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6244 | |
6245 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6246 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 | 6247 | update_status (XPROCESS (proc)); |
4d2b044c DA |
6248 | if (! EQ (XPROCESS (proc)->status, Qrun)) |
6249 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); | |
577d03d5 | 6250 | |
de7fbd09 KH |
6251 | if (CODING_REQUIRE_FLUSHING (coding)) |
6252 | { | |
6253 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6254 | send_process (proc, "", 0, Qnil); | |
6255 | } | |
6256 | ||
60f0fb11 | 6257 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6258 | send_process (proc, "\004", 1, Qnil); |
4d2b044c | 6259 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6260 | { |
a7ebc409 | 6261 | #ifndef WINDOWSNT |
d888760c GM |
6262 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6263 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6264 | #endif /* not WINDOWSNT */ |
d888760c GM |
6265 | /* Do nothing on Windows because writes are blocking. */ |
6266 | } | |
d0d6b7c5 JB |
6267 | else |
6268 | { | |
4525f571 RS |
6269 | int old_outfd, new_outfd; |
6270 | ||
93853f3d | 6271 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6272 | /* If this is a network connection, or socketpair is used |
6273 | for communication with the subprocess, call shutdown to cause EOF. | |
6274 | (In some old system, shutdown to socketpair doesn't work. | |
6275 | Then we just can't win.) */ | |
4d2b044c | 6276 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6277 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6278 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6279 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6280 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6281 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6282 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6283 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6284 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6285 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6286 | if (new_outfd < 0) |
6287 | abort (); | |
60f0fb11 | 6288 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6289 | |
6290 | if (!proc_encode_coding_system[new_outfd]) | |
6291 | proc_encode_coding_system[new_outfd] | |
23f86fce | 6292 | = xmalloc (sizeof (struct coding_system)); |
72af86bd AS |
6293 | memcpy (proc_encode_coding_system[new_outfd], |
6294 | proc_encode_coding_system[old_outfd], | |
6295 | sizeof (struct coding_system)); | |
6296 | memset (proc_encode_coding_system[old_outfd], 0, | |
6297 | sizeof (struct coding_system)); | |
4525f571 | 6298 | |
60f0fb11 | 6299 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6300 | } |
d0d6b7c5 JB |
6301 | return process; |
6302 | } | |
d0d6b7c5 | 6303 | \f |
3fed8ad5 GM |
6304 | /* On receipt of a signal that a child status has changed, loop asking |
6305 | about children with changed statuses until the system says there | |
6306 | are no more. | |
177c0ea7 | 6307 | |
3fed8ad5 GM |
6308 | All we do is change the status; we do not run sentinels or print |
6309 | notifications. That is saved for the next time keyboard input is | |
6310 | done, in order to avoid timing errors. | |
6311 | ||
6312 | ** WARNING: this can be called during garbage collection. | |
6313 | Therefore, it must not be fooled by the presence of mark bits in | |
6314 | Lisp objects. | |
6315 | ||
6316 | ** USG WARNING: Although it is not obvious from the documentation | |
6317 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6318 | signal() before executing at least one wait(), otherwise the | |
6319 | handler will be called again, resulting in an infinite loop. The | |
6320 | relevant portion of the documentation reads "SIGCLD signals will be | |
6321 | queued and the signal-catching function will be continually | |
6322 | reentered until the queue is empty". Invoking signal() causes the | |
6323 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6324 | Inc. |
6325 | ||
6326 | ** Malloc WARNING: This should never call malloc either directly or | |
6327 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6328 | |
a5cfdda8 | 6329 | #ifdef SIGCHLD |
9af30bdf | 6330 | static void |
d3da34e0 | 6331 | sigchld_handler (int signo) |
d0d6b7c5 JB |
6332 | { |
6333 | int old_errno = errno; | |
6334 | Lisp_Object proc; | |
97ec208f | 6335 | struct Lisp_Process *p; |
d0d6b7c5 | 6336 | |
333f1b6f JD |
6337 | SIGNAL_THREAD_CHECK (signo); |
6338 | ||
d0d6b7c5 JB |
6339 | while (1) |
6340 | { | |
8e050977 | 6341 | pid_t pid; |
bba104c1 | 6342 | int w; |
d0d6b7c5 JB |
6343 | Lisp_Object tail; |
6344 | ||
6345 | #ifdef WNOHANG | |
6346 | #ifndef WUNTRACED | |
6347 | #define WUNTRACED 0 | |
6348 | #endif /* no WUNTRACED */ | |
6349 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 | 6350 | do |
63136da6 | 6351 | { |
29ed4d51 | 6352 | errno = 0; |
13294f95 | 6353 | pid = waitpid (-1, &w, WNOHANG | WUNTRACED); |
29ed4d51 | 6354 | } |
e7d4a904 | 6355 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6356 | |
6357 | if (pid <= 0) | |
6358 | { | |
3fed8ad5 GM |
6359 | /* PID == 0 means no processes found, PID == -1 means a real |
6360 | failure. We have done all our job, so return. */ | |
d0d6b7c5 | 6361 | |
d0d6b7c5 JB |
6362 | errno = old_errno; |
6363 | return; | |
6364 | } | |
6365 | #else | |
6366 | pid = wait (&w); | |
6367 | #endif /* no WNOHANG */ | |
6368 | ||
6369 | /* Find the process that signaled us, and record its status. */ | |
6370 | ||
a5cfdda8 | 6371 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6372 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6373 | { |
8e050977 | 6374 | Lisp_Object xpid = XCAR (tail); |
d311d28c PE |
6375 | if ((INTEGERP (xpid) && pid == XINT (xpid)) |
6376 | || (FLOATP (xpid) && pid == XFLOAT_DATA (xpid))) | |
8e050977 CY |
6377 | { |
6378 | XSETCAR (tail, Qnil); | |
6379 | goto sigchld_end_of_loop; | |
6380 | } | |
a5cfdda8 KS |
6381 | } |
6382 | ||
6383 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6384 | p = 0; |
8e50cc2d | 6385 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6386 | { |
70949dac | 6387 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6388 | p = XPROCESS (proc); |
4d2b044c | 6389 | if (EQ (p->type, Qreal) && p->pid == pid) |
d0d6b7c5 JB |
6390 | break; |
6391 | p = 0; | |
6392 | } | |
6393 | ||
6394 | /* Look for an asynchronous process whose pid hasn't been filled | |
6395 | in yet. */ | |
6396 | if (p == 0) | |
8e50cc2d | 6397 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6398 | { |
70949dac | 6399 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6400 | p = XPROCESS (proc); |
6bfd98e7 | 6401 | if (p->pid == -1) |
d0d6b7c5 JB |
6402 | break; |
6403 | p = 0; | |
6404 | } | |
177c0ea7 | 6405 | |
d0d6b7c5 JB |
6406 | /* Change the status of the process that was found. */ |
6407 | if (p != 0) | |
6408 | { | |
e98d950b | 6409 | int clear_desc_flag = 0; |
177c0ea7 | 6410 | |
60f0fb11 | 6411 | p->tick = ++process_tick; |
bba104c1 | 6412 | p->raw_status = w; |
6bfd98e7 | 6413 | p->raw_status_new = 1; |
177c0ea7 | 6414 | |
d0d6b7c5 | 6415 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6416 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6417 | && p->infd >= 0) |
e98d950b RS |
6418 | clear_desc_flag = 1; |
6419 | ||
6420 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6421 | if (clear_desc_flag) | |
6422 | { | |
60f0fb11 SM |
6423 | FD_CLR (p->infd, &input_wait_mask); |
6424 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6425 | } |
6be429b1 | 6426 | |
214d6069 | 6427 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6428 | look around. */ |
6429 | if (input_available_clear_time) | |
e9a9ae03 | 6430 | *input_available_clear_time = make_emacs_time (0, 0); |
d0d6b7c5 JB |
6431 | } |
6432 | ||
a5cfdda8 KS |
6433 | /* There was no asynchronous process found for that pid: we have |
6434 | a synchronous process. */ | |
d0d6b7c5 JB |
6435 | else |
6436 | { | |
6437 | synch_process_alive = 0; | |
6438 | ||
6439 | /* Report the status of the synchronous process. */ | |
6440 | if (WIFEXITED (w)) | |
13294f95 | 6441 | synch_process_retcode = WEXITSTATUS (w); |
d0d6b7c5 | 6442 | else if (WIFSIGNALED (w)) |
63136da6 | 6443 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6444 | |
214d6069 | 6445 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6446 | look around. */ |
6447 | if (input_available_clear_time) | |
e9a9ae03 | 6448 | *input_available_clear_time = make_emacs_time (0, 0); |
d0d6b7c5 JB |
6449 | } |
6450 | ||
a5cfdda8 KS |
6451 | sigchld_end_of_loop: |
6452 | ; | |
6453 | ||
d0d6b7c5 JB |
6454 | /* On some systems, we must return right away. |
6455 | If any more processes want to signal us, we will | |
6456 | get another signal. | |
6457 | Otherwise (on systems that have WNOHANG), loop around | |
6458 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6459 | #if (defined WINDOWSNT \ |
8a2a6032 | 6460 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6461 | && !(defined HPUX && defined WNOHANG))) |
d0d6b7c5 JB |
6462 | errno = old_errno; |
6463 | return; | |
6464 | #endif /* USG, but not HPUX with WNOHANG */ | |
6465 | } | |
6466 | } | |
a5cfdda8 | 6467 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6468 | \f |
6469 | ||
6470 | static Lisp_Object | |
d3da34e0 | 6471 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6472 | { |
21238f11 | 6473 | PSET (XPROCESS (XCAR (data)), sentinel, XCDR (data)); |
d0d6b7c5 JB |
6474 | return Qnil; |
6475 | } | |
6476 | ||
3b9a3dfa | 6477 | static Lisp_Object |
b93aacde | 6478 | exec_sentinel_error_handler (Lisp_Object error_val) |
3b9a3dfa | 6479 | { |
b93aacde | 6480 | cmd_error_internal (error_val, "error in process sentinel: "); |
3b9a3dfa RS |
6481 | Vinhibit_quit = Qt; |
6482 | update_echo_area (); | |
833ba342 | 6483 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6484 | return Qt; |
3b9a3dfa RS |
6485 | } |
6486 | ||
d0d6b7c5 | 6487 | static void |
d3da34e0 | 6488 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6489 | { |
aba7731a | 6490 | Lisp_Object sentinel, odeactivate; |
d0d6b7c5 | 6491 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 6492 | ptrdiff_t count = SPECPDL_INDEX (); |
4da2f5be | 6493 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6494 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6495 | |
84af9896 RS |
6496 | if (inhibit_sentinels) |
6497 | return; | |
6498 | ||
dfc21838 RS |
6499 | /* No need to gcpro these, because all we do with them later |
6500 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6501 | odeactivate = Vdeactivate_mark; |
aba7731a PE |
6502 | #if 0 |
6503 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 6504 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6505 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 6506 | #endif |
dfc21838 | 6507 | |
97e53006 SM |
6508 | /* There's no good reason to let sentinels change the current |
6509 | buffer, and many callers of accept-process-output, sit-for, and | |
6510 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 6511 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
97e53006 | 6512 | |
4d2b044c | 6513 | sentinel = p->sentinel; |
d0d6b7c5 JB |
6514 | if (NILP (sentinel)) |
6515 | return; | |
6516 | ||
6517 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6518 | assure that it gets restored no matter how the sentinel exits. */ | |
21238f11 | 6519 | PSET (p, sentinel, Qnil); |
d0d6b7c5 JB |
6520 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); |
6521 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6522 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6523 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6524 | |
4da2f5be RS |
6525 | /* In case we get recursively called, |
6526 | and we already saved the match data nonrecursively, | |
6527 | save the same match data in safely recursive fashion. */ | |
6528 | if (outer_running_asynch_code) | |
6529 | { | |
6530 | Lisp_Object tem; | |
89f2614d KS |
6531 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6532 | restore_search_regs (); | |
6533 | record_unwind_save_match_data (); | |
6534 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6535 | } |
6536 | ||
6537 | /* For speed, if a search happens within this code, | |
6538 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6539 | running_asynch_code = 1; |
4da2f5be | 6540 | |
3b9a3dfa RS |
6541 | internal_condition_case_1 (read_process_output_call, |
6542 | Fcons (sentinel, | |
6543 | Fcons (proc, Fcons (reason, Qnil))), | |
6544 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6545 | exec_sentinel_error_handler); | |
4da2f5be RS |
6546 | |
6547 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6548 | restore_search_regs (); |
4da2f5be | 6549 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6550 | |
6551 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6552 | |
6553 | /* Restore waiting_for_user_input_p as it was | |
6554 | when we were called, in case the filter clobbered it. */ | |
6555 | waiting_for_user_input_p = waiting; | |
6556 | ||
7973cfa8 | 6557 | #if 0 |
dfc21838 RS |
6558 | if (! EQ (Fcurrent_buffer (), obuffer) |
6559 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6560 | #endif |
927e08be RS |
6561 | /* But do it only if the caller is actually going to read events. |
6562 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6563 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6564 | if (waiting_for_user_input_p == -1) |
6565 | record_asynch_buffer_change (); | |
8fb3cf64 | 6566 | |
2ea6d561 | 6567 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6568 | } |
6569 | ||
6570 | /* Report all recent events of a change in process status | |
6571 | (either run the sentinel or output a message). | |
b50fe468 RS |
6572 | This is usually done while Emacs is waiting for keyboard input |
6573 | but can be done at other times. */ | |
d0d6b7c5 | 6574 | |
ff6daed3 | 6575 | static void |
d3da34e0 | 6576 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6577 | { |
6578 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6579 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6580 | struct gcpro gcpro1, gcpro2; |
6581 | ||
2e4149a8 KH |
6582 | tail = Qnil; |
6583 | msg = Qnil; | |
d0d6b7c5 JB |
6584 | /* We need to gcpro tail; if read_process_output calls a filter |
6585 | which deletes a process and removes the cons to which tail points | |
6586 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6587 | reference. */ | |
6588 | GCPRO2 (tail, msg); | |
6589 | ||
30623085 RS |
6590 | /* Set this now, so that if new processes are created by sentinels |
6591 | that we run, we get called again to handle their status changes. */ | |
6592 | update_tick = process_tick; | |
6593 | ||
99784d63 | 6594 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6595 | { |
30623085 RS |
6596 | Lisp_Object symbol; |
6597 | register struct Lisp_Process *p; | |
6598 | ||
99784d63 | 6599 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6600 | p = XPROCESS (proc); |
6601 | ||
60f0fb11 | 6602 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6603 | { |
60f0fb11 | 6604 | p->update_tick = p->tick; |
d0d6b7c5 | 6605 | |
30623085 | 6606 | /* If process is still active, read any output that remains. */ |
4d2b044c DA |
6607 | while (! EQ (p->filter, Qt) |
6608 | && ! EQ (p->status, Qconnect) | |
6609 | && ! EQ (p->status, Qlisten) | |
d888760c | 6610 | /* Network or serial process not stopped: */ |
4d2b044c | 6611 | && ! EQ (p->command, Qt) |
60f0fb11 | 6612 | && p->infd >= 0 |
ff6daed3 | 6613 | && p != deleting_process |
60f0fb11 | 6614 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6615 | |
4d2b044c | 6616 | buffer = p->buffer; |
d0d6b7c5 | 6617 | |
30623085 | 6618 | /* Get the text to use for the message. */ |
6bfd98e7 | 6619 | if (p->raw_status_new) |
30623085 | 6620 | update_status (p); |
116c423c | 6621 | msg = status_message (p); |
d0d6b7c5 | 6622 | |
30623085 | 6623 | /* If process is terminated, deactivate it or delete it. */ |
4d2b044c DA |
6624 | symbol = p->status; |
6625 | if (CONSP (p->status)) | |
6626 | symbol = XCAR (p->status); | |
d0d6b7c5 | 6627 | |
30623085 RS |
6628 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6629 | || EQ (symbol, Qclosed)) | |
6630 | { | |
6631 | if (delete_exited_processes) | |
6632 | remove_process (proc); | |
6633 | else | |
6634 | deactivate_process (proc); | |
6635 | } | |
d0d6b7c5 | 6636 | |
0ad61fe7 RS |
6637 | /* The actions above may have further incremented p->tick. |
6638 | So set p->update_tick again | |
6639 | so that an error in the sentinel will not cause | |
6640 | this code to be run again. */ | |
60f0fb11 | 6641 | p->update_tick = p->tick; |
30623085 | 6642 | /* Now output the message suitably. */ |
4d2b044c | 6643 | if (!NILP (p->sentinel)) |
30623085 RS |
6644 | exec_sentinel (proc, msg); |
6645 | /* Don't bother with a message in the buffer | |
6646 | when a process becomes runnable. */ | |
6647 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6648 | { | |
01f5787b | 6649 | Lisp_Object tem; |
30623085 | 6650 | struct buffer *old = current_buffer; |
d311d28c PE |
6651 | ptrdiff_t opoint, opoint_byte; |
6652 | ptrdiff_t before, before_byte; | |
2e4149a8 | 6653 | |
30623085 RS |
6654 | /* Avoid error if buffer is deleted |
6655 | (probably that's why the process is dead, too) */ | |
4b4deea2 | 6656 | if (NILP (BVAR (XBUFFER (buffer), name))) |
30623085 RS |
6657 | continue; |
6658 | Fset_buffer (buffer); | |
12ca5cdf | 6659 | |
6ec8bbd2 | 6660 | opoint = PT; |
d8a2934e | 6661 | opoint_byte = PT_BYTE; |
30623085 RS |
6662 | /* Insert new output into buffer |
6663 | at the current end-of-output marker, | |
6664 | thus preserving logical ordering of input and output. */ | |
4d2b044c DA |
6665 | if (XMARKER (p->mark)->buffer) |
6666 | Fgoto_char (p->mark); | |
30623085 | 6667 | else |
d8a2934e | 6668 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6669 | |
6670 | before = PT; | |
d8a2934e | 6671 | before_byte = PT_BYTE; |
30623085 | 6672 | |
4b4deea2 TT |
6673 | tem = BVAR (current_buffer, read_only); |
6674 | BVAR (current_buffer, read_only) = Qnil; | |
30623085 | 6675 | insert_string ("\nProcess "); |
21238f11 | 6676 | { /* FIXME: temporary kludge */ |
4d2b044c | 6677 | Lisp_Object tem2 = p->name; Finsert (1, &tem2); } |
30623085 RS |
6678 | insert_string (" "); |
6679 | Finsert (1, &msg); | |
4b4deea2 | 6680 | BVAR (current_buffer, read_only) = tem; |
4d2b044c | 6681 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6682 | |
12ca5cdf | 6683 | if (opoint >= before) |
d8a2934e RS |
6684 | SET_PT_BOTH (opoint + (PT - before), |
6685 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6686 | else |
d8a2934e | 6687 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6688 | |
30623085 | 6689 | set_buffer_internal (old); |
d0d6b7c5 | 6690 | } |
30623085 RS |
6691 | } |
6692 | } /* end for */ | |
d0d6b7c5 JB |
6693 | |
6694 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6695 | UNGCPRO; |
6696 | } | |
0fa1789e KH |
6697 | |
6698 | \f | |
6699 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6700 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6701 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6702 | DECODING will be used to decode subprocess output and ENCODING to | |
6703 | encode subprocess input. */) | |
5842a27b | 6704 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6705 | { |
6706 | register struct Lisp_Process *p; | |
6707 | ||
f3d9532b JB |
6708 | CHECK_PROCESS (process); |
6709 | p = XPROCESS (process); | |
60f0fb11 | 6710 | if (p->infd < 0) |
4d2b044c | 6711 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6712 | if (p->outfd < 0) |
4d2b044c | 6713 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6714 | Fcheck_coding_system (decoding); |
6715 | Fcheck_coding_system (encoding); | |
76d812bb | 6716 | encoding = coding_inherit_eol_type (encoding, Qnil); |
21238f11 DA |
6717 | PSET (p, decode_coding_system, decoding); |
6718 | PSET (p, encode_coding_system, encoding); | |
f3d9532b | 6719 | setup_process_coding_systems (process); |
0fa1789e KH |
6720 | |
6721 | return Qnil; | |
6722 | } | |
6723 | ||
6724 | DEFUN ("process-coding-system", | |
6725 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6726 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6727 | (register Lisp_Object process) |
0fa1789e | 6728 | { |
f3d9532b | 6729 | CHECK_PROCESS (process); |
4d2b044c DA |
6730 | return Fcons (XPROCESS (process)->decode_coding_system, |
6731 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6732 | } |
03f04413 KH |
6733 | |
6734 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6735 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6736 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6737 | If FLAG is non-nil, the filter is given multibyte strings. | |
6738 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6739 | all character code conversion except for end-of-line conversion is |
6740 | suppressed. */) | |
5842a27b | 6741 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6742 | { |
6743 | register struct Lisp_Process *p; | |
6744 | ||
f3d9532b JB |
6745 | CHECK_PROCESS (process); |
6746 | p = XPROCESS (process); | |
5431bd6a | 6747 | if (NILP (flag)) |
21238f11 | 6748 | PSET (p, decode_coding_system, |
4d2b044c | 6749 | raw_text_coding_system (p->decode_coding_system)); |
f3d9532b | 6750 | setup_process_coding_systems (process); |
03f04413 KH |
6751 | |
6752 | return Qnil; | |
6753 | } | |
6754 | ||
6755 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6756 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6757 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6758 | (Lisp_Object process) |
03f04413 KH |
6759 | { |
6760 | register struct Lisp_Process *p; | |
5431bd6a | 6761 | struct coding_system *coding; |
03f04413 | 6762 | |
f3d9532b JB |
6763 | CHECK_PROCESS (process); |
6764 | p = XPROCESS (process); | |
5431bd6a SM |
6765 | coding = proc_decode_coding_system[p->infd]; |
6766 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6767 | } |
6768 | ||
6769 | ||
d0d6b7c5 | 6770 | \f |
cb768704 | 6771 | |
4475bec4 PE |
6772 | # ifdef HAVE_GPM |
6773 | ||
994d9841 | 6774 | void |
d3da34e0 | 6775 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6776 | { |
3fad2ad2 | 6777 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6778 | } |
6779 | ||
994d9841 | 6780 | void |
d3da34e0 | 6781 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6782 | { |
3fad2ad2 | 6783 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6784 | } |
6785 | ||
4475bec4 PE |
6786 | # endif |
6787 | ||
006c5daa PE |
6788 | # ifdef SIGIO |
6789 | ||
a69281ff RS |
6790 | /* Return nonzero if *MASK has a bit set |
6791 | that corresponds to one of the keyboard input descriptors. */ | |
6792 | ||
ff6daed3 | 6793 | static int |
d3da34e0 | 6794 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6795 | { |
6796 | int fd; | |
6797 | ||
3fad2ad2 | 6798 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6799 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6800 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6801 | return 1; | |
6802 | ||
6803 | return 0; | |
6804 | } | |
006c5daa | 6805 | # endif |
934e2a68 | 6806 | |
f388c88a | 6807 | #else /* not subprocesses */ |
934e2a68 | 6808 | |
f388c88a EZ |
6809 | /* Defined on msdos.c. */ |
6810 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
0d23c240 | 6811 | EMACS_TIME *, void *); |
934e2a68 | 6812 | |
f388c88a EZ |
6813 | /* Implementation of wait_reading_process_output, assuming that there |
6814 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6815 | |
f388c88a | 6816 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6817 | |
d188e26b | 6818 | TIME_LIMIT is: |
d35af63c PE |
6819 | timeout in seconds |
6820 | If negative, gobble data immediately available but don't wait for any. | |
6821 | ||
d188e26b | 6822 | NSECS is: |
d35af63c PE |
6823 | an additional duration to wait, measured in nanoseconds |
6824 | If TIME_LIMIT is zero, then: | |
d188e26b PE |
6825 | If NSECS == 0, there is no limit. |
6826 | If NSECS > 0, the timeout consists of NSECS only. | |
d35af63c | 6827 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
934e2a68 | 6828 | |
a0bee46f | 6829 | READ_KBD is: |
f388c88a EZ |
6830 | 0 to ignore keyboard input, or |
6831 | 1 to return when input is available, or | |
6832 | -1 means caller will actually read the input, so don't throw to | |
6833 | the quit handler. | |
934e2a68 | 6834 | |
f388c88a EZ |
6835 | see full version for other parameters. We know that wait_proc will |
6836 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6837 | |
d188e26b | 6838 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
f388c88a | 6839 | output that arrives. |
934e2a68 | 6840 | |
f388c88a EZ |
6841 | Return true if we received input from any process. */ |
6842 | ||
6843 | int | |
d35af63c | 6844 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
1408902e EZ |
6845 | int do_display, |
6846 | Lisp_Object wait_for_cell, | |
6847 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6848 | { |
f388c88a EZ |
6849 | register int nfds; |
6850 | EMACS_TIME end_time, timeout; | |
d0d6b7c5 | 6851 | |
d35af63c PE |
6852 | if (time_limit < 0) |
6853 | { | |
6854 | time_limit = 0; | |
6855 | nsecs = -1; | |
6856 | } | |
6857 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
6858 | time_limit = TYPE_MAXIMUM (time_t); | |
6859 | ||
f388c88a | 6860 | /* What does time_limit really mean? */ |
216ee680 | 6861 | if (time_limit || 0 < nsecs) |
f388c88a | 6862 | { |
e9a9ae03 PE |
6863 | timeout = make_emacs_time (time_limit, nsecs); |
6864 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
f388c88a | 6865 | } |
84af9896 | 6866 | |
f388c88a EZ |
6867 | /* Turn off periodic alarms (in case they are in use) |
6868 | and then turn off any other atimers, | |
6869 | because the select emulator uses alarms. */ | |
6870 | stop_polling (); | |
6871 | turn_on_atimers (0); | |
d0d6b7c5 | 6872 | |
f388c88a EZ |
6873 | while (1) |
6874 | { | |
6875 | int timeout_reduced_for_timers = 0; | |
a0bee46f PE |
6876 | SELECT_TYPE waitchannels; |
6877 | int xerrno; | |
dd2281ae | 6878 | |
f388c88a EZ |
6879 | /* If calling from keyboard input, do not quit |
6880 | since we want to return C-g as an input character. | |
6881 | Otherwise, do pending quit if requested. */ | |
6882 | if (read_kbd >= 0) | |
6883 | QUIT; | |
bad49fc7 | 6884 | |
f388c88a EZ |
6885 | /* Exit now if the cell we're waiting for became non-nil. */ |
6886 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6887 | break; | |
0a65b032 | 6888 | |
bae8d137 RS |
6889 | /* Compute time from now till when time limit is up */ |
6890 | /* Exit if already run out */ | |
d35af63c | 6891 | if (nsecs < 0) |
52fd88d3 | 6892 | { |
216ee680 | 6893 | /* A negative timeout means |
52fd88d3 EZ |
6894 | gobble output available now |
6895 | but don't wait at all. */ | |
6896 | ||
e9a9ae03 | 6897 | timeout = make_emacs_time (0, 0); |
52fd88d3 | 6898 | } |
216ee680 | 6899 | else if (time_limit || 0 < nsecs) |
6720a7fb | 6900 | { |
e9a9ae03 PE |
6901 | EMACS_TIME now = current_emacs_time (); |
6902 | if (EMACS_TIME_LE (end_time, now)) | |
6720a7fb | 6903 | break; |
e9a9ae03 | 6904 | timeout = sub_emacs_time (end_time, now); |
6720a7fb | 6905 | } |
52fd88d3 EZ |
6906 | else |
6907 | { | |
e9a9ae03 | 6908 | timeout = make_emacs_time (100000, 0); |
52fd88d3 | 6909 | } |
6720a7fb | 6910 | |
bae8d137 RS |
6911 | /* If our caller will not immediately handle keyboard events, |
6912 | run timer events directly. | |
6913 | (Callers that will immediately read keyboard events | |
6914 | call timer_delay on their own.) */ | |
f3fbd155 | 6915 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6916 | { |
6917 | EMACS_TIME timer_delay; | |
0a65b032 | 6918 | |
9baacf76 | 6919 | do |
0a65b032 | 6920 | { |
9baacf76 | 6921 | int old_timers_run = timers_run; |
f868cd8a | 6922 | timer_delay = timer_check (); |
9baacf76 GM |
6923 | if (timers_run != old_timers_run && do_display) |
6924 | /* We must retry, since a timer may have requeued itself | |
6925 | and that could alter the time delay. */ | |
3007ebfb | 6926 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6927 | else |
6928 | break; | |
0a65b032 | 6929 | } |
9baacf76 | 6930 | while (!detect_input_pending ()); |
0a65b032 | 6931 | |
52fd88d3 | 6932 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6933 | if (read_kbd != 0 |
52fd88d3 EZ |
6934 | && requeued_events_pending_p ()) |
6935 | break; | |
6936 | ||
d35af63c | 6937 | if (EMACS_TIME_VALID_P (timer_delay) && 0 <= nsecs) |
bae8d137 | 6938 | { |
d35af63c | 6939 | if (EMACS_TIME_LT (timer_delay, timeout)) |
bae8d137 | 6940 | { |
f694e5d2 | 6941 | timeout = timer_delay; |
bae8d137 RS |
6942 | timeout_reduced_for_timers = 1; |
6943 | } | |
6944 | } | |
6945 | } | |
6946 | ||
6720a7fb JB |
6947 | /* Cause C-g and alarm signals to take immediate action, |
6948 | and cause input available signals to zero out timeout. */ | |
b89a415a | 6949 | if (read_kbd < 0) |
6720a7fb JB |
6950 | set_waiting_for_input (&timeout); |
6951 | ||
ff11dfa1 | 6952 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6953 | reprocess its display stuff. */ |
5164ee8e | 6954 | if (frame_garbaged && do_display) |
0a65b032 RS |
6955 | { |
6956 | clear_waiting_for_input (); | |
3007ebfb | 6957 | redisplay_preserve_echo_area (15); |
b89a415a | 6958 | if (read_kbd < 0) |
0a65b032 RS |
6959 | set_waiting_for_input (&timeout); |
6960 | } | |
6720a7fb | 6961 | |
a0bee46f PE |
6962 | /* Wait till there is something to do. */ |
6963 | FD_ZERO (&waitchannels); | |
b89a415a | 6964 | if (read_kbd && detect_input_pending ()) |
a0bee46f PE |
6965 | nfds = 0; |
6966 | else | |
1861b214 | 6967 | { |
a0bee46f PE |
6968 | if (read_kbd || !NILP (wait_for_cell)) |
6969 | FD_SET (0, &waitchannels); | |
6970 | nfds = pselect (1, &waitchannels, NULL, NULL, &timeout, NULL); | |
1861b214 | 6971 | } |
f694e5d2 KH |
6972 | |
6973 | xerrno = errno; | |
6720a7fb JB |
6974 | |
6975 | /* Make C-g and alarm signals set flags again */ | |
6976 | clear_waiting_for_input (); | |
6977 | ||
6978 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 6979 | do_pending_window_change (0); |
6720a7fb | 6980 | |
d35af63c | 6981 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
f694e5d2 KH |
6982 | /* We waited the full specified time, so return now. */ |
6983 | break; | |
6984 | ||
6720a7fb JB |
6985 | if (nfds == -1) |
6986 | { | |
6987 | /* If the system call was interrupted, then go around the | |
6988 | loop again. */ | |
f694e5d2 | 6989 | if (xerrno == EINTR) |
8db121c4 | 6990 | FD_ZERO (&waitchannels); |
f694e5d2 | 6991 | else |
68c45bf0 | 6992 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 6993 | } |
6720a7fb | 6994 | |
f694e5d2 KH |
6995 | /* Check for keyboard input */ |
6996 | ||
b89a415a | 6997 | if (read_kbd |
78c1afb6 | 6998 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 6999 | { |
78c1afb6 | 7000 | swallow_events (do_display); |
f694e5d2 | 7001 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7002 | break; |
78c1afb6 EZ |
7003 | } |
7004 | ||
52fd88d3 | 7005 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7006 | if (read_kbd |
52fd88d3 EZ |
7007 | && requeued_events_pending_p ()) |
7008 | break; | |
7009 | ||
f854a00b RS |
7010 | /* If wait_for_cell. check for keyboard input |
7011 | but don't run any timers. | |
7012 | ??? (It seems wrong to me to check for keyboard | |
7013 | input at all when wait_for_cell, but the code | |
7014 | has been this way since July 1994. | |
7015 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7016 | if (! NILP (wait_for_cell) |
f854a00b RS |
7017 | && detect_input_pending ()) |
7018 | { | |
7019 | swallow_events (do_display); | |
7020 | if (detect_input_pending ()) | |
7021 | break; | |
7022 | } | |
7023 | ||
0a65b032 | 7024 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7025 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7026 | break; |
6720a7fb JB |
7027 | } |
7028 | ||
a87b802f JB |
7029 | start_polling (); |
7030 | ||
6720a7fb JB |
7031 | return 0; |
7032 | } | |
7033 | ||
f388c88a EZ |
7034 | #endif /* not subprocesses */ |
7035 | ||
7036 | /* The following functions are needed even if async subprocesses are | |
7037 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 7038 | |
01faa934 DN |
7039 | /* Add DESC to the set of keyboard input descriptors. */ |
7040 | ||
7041 | void | |
7042 | add_keyboard_wait_descriptor (int desc) | |
7043 | { | |
bf05eed6 | 7044 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
7045 | FD_SET (desc, &input_wait_mask); |
7046 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
7047 | if (desc > max_input_desc) |
7048 | max_input_desc = desc; | |
bf05eed6 | 7049 | #endif |
01faa934 DN |
7050 | } |
7051 | ||
7052 | /* From now on, do not expect DESC to give keyboard input. */ | |
7053 | ||
7054 | void | |
7055 | delete_keyboard_wait_descriptor (int desc) | |
7056 | { | |
bf05eed6 | 7057 | #ifdef subprocesses |
01faa934 | 7058 | int fd; |
3fad2ad2 | 7059 | int lim = max_input_desc; |
01faa934 DN |
7060 | |
7061 | FD_CLR (desc, &input_wait_mask); | |
7062 | FD_CLR (desc, &non_process_wait_mask); | |
7063 | ||
3fad2ad2 | 7064 | if (desc == max_input_desc) |
01faa934 | 7065 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
7066 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
7067 | max_input_desc = fd; | |
bf05eed6 | 7068 | #endif |
01faa934 DN |
7069 | } |
7070 | ||
fc549af9 EZ |
7071 | /* Setup coding systems of PROCESS. */ |
7072 | ||
7073 | void | |
7074 | setup_process_coding_systems (Lisp_Object process) | |
7075 | { | |
7076 | #ifdef subprocesses | |
7077 | struct Lisp_Process *p = XPROCESS (process); | |
7078 | int inch = p->infd; | |
7079 | int outch = p->outfd; | |
7080 | Lisp_Object coding_system; | |
7081 | ||
7082 | if (inch < 0 || outch < 0) | |
7083 | return; | |
7084 | ||
7085 | if (!proc_decode_coding_system[inch]) | |
38182d90 | 7086 | proc_decode_coding_system[inch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c DA |
7087 | coding_system = p->decode_coding_system; |
7088 | if (! NILP (p->filter)) | |
fc549af9 | 7089 | ; |
4d2b044c | 7090 | else if (BUFFERP (p->buffer)) |
fc549af9 | 7091 | { |
4d2b044c | 7092 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
7093 | coding_system = raw_text_coding_system (coding_system); |
7094 | } | |
7095 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7096 | ||
7097 | if (!proc_encode_coding_system[outch]) | |
38182d90 | 7098 | proc_encode_coding_system[outch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c | 7099 | setup_coding_system (p->encode_coding_system, |
fc549af9 EZ |
7100 | proc_encode_coding_system[outch]); |
7101 | #endif | |
7102 | } | |
7103 | ||
7104 | /* Close all descriptors currently in use for communication | |
7105 | with subprocess. This is used in a newly-forked subprocess | |
7106 | to get rid of irrelevant descriptors. */ | |
7107 | ||
7108 | void | |
7109 | close_process_descs (void) | |
7110 | { | |
7111 | #ifndef DOS_NT | |
7112 | int i; | |
7113 | for (i = 0; i < MAXDESC; i++) | |
7114 | { | |
7115 | Lisp_Object process; | |
7116 | process = chan_process[i]; | |
7117 | if (!NILP (process)) | |
7118 | { | |
7119 | int in = XPROCESS (process)->infd; | |
7120 | int out = XPROCESS (process)->outfd; | |
7121 | if (in >= 0) | |
7122 | emacs_close (in); | |
7123 | if (out >= 0 && in != out) | |
7124 | emacs_close (out); | |
7125 | } | |
7126 | } | |
7127 | #endif | |
7128 | } | |
7129 | ||
6720a7fb | 7130 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7131 | doc: /* Return the (or a) process associated with BUFFER. |
7132 | BUFFER may be a buffer or the name of one. */) | |
7133 | (register Lisp_Object buffer) | |
6720a7fb | 7134 | { |
f388c88a EZ |
7135 | #ifdef subprocesses |
7136 | register Lisp_Object buf, tail, proc; | |
7137 | ||
7138 | if (NILP (buffer)) return Qnil; | |
7139 | buf = Fget_buffer (buffer); | |
7140 | if (NILP (buf)) return Qnil; | |
7141 | ||
7142 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7143 | { | |
7144 | proc = Fcdr (XCAR (tail)); | |
4d2b044c | 7145 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
f388c88a EZ |
7146 | return proc; |
7147 | } | |
7148 | #endif /* subprocesses */ | |
6720a7fb JB |
7149 | return Qnil; |
7150 | } | |
7151 | ||
52a1b894 | 7152 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7153 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7154 | 1, 1, 0, | |
f388c88a EZ |
7155 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7156 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7157 | associated with PROCESS will inherit the coding system used to decode | |
7158 | the process output. */) | |
5842a27b | 7159 | (register Lisp_Object process) |
52a1b894 | 7160 | { |
f388c88a EZ |
7161 | #ifdef subprocesses |
7162 | CHECK_PROCESS (process); | |
7163 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7164 | #else | |
52a1b894 EZ |
7165 | /* Ignore the argument and return the value of |
7166 | inherit-process-coding-system. */ | |
7167 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7168 | #endif |
52a1b894 EZ |
7169 | } |
7170 | ||
6720a7fb | 7171 | /* Kill all processes associated with `buffer'. |
f388c88a | 7172 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7173 | |
d9bb0c32 | 7174 | void |
f388c88a | 7175 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7176 | { |
f388c88a EZ |
7177 | #ifdef subprocesses |
7178 | Lisp_Object tail, proc; | |
7179 | ||
7180 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7181 | { | |
7182 | proc = XCDR (XCAR (tail)); | |
7183 | if (PROCESSP (proc) | |
4d2b044c | 7184 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
f388c88a EZ |
7185 | { |
7186 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7187 | Fdelete_process (proc); | |
7188 | else if (XPROCESS (proc)->infd >= 0) | |
7189 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7190 | } | |
7191 | } | |
7192 | #else /* subprocesses */ | |
7193 | /* Since we have no subprocesses, this does nothing. */ | |
7194 | #endif /* subprocesses */ | |
6720a7fb JB |
7195 | } |
7196 | ||
a7ca3326 | 7197 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, |
16a97296 | 7198 | Swaiting_for_user_input_p, 0, 0, 0, |
77defa9a EZ |
7199 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
7200 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7201 | (void) | |
7202 | { | |
7203 | #ifdef subprocesses | |
7204 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7205 | #else | |
7206 | return Qnil; | |
7207 | #endif | |
7208 | } | |
7209 | ||
d568829b EZ |
7210 | /* Stop reading input from keyboard sources. */ |
7211 | ||
7212 | void | |
7213 | hold_keyboard_input (void) | |
7214 | { | |
7215 | kbd_is_on_hold = 1; | |
7216 | } | |
7217 | ||
7218 | /* Resume reading input from keyboard sources. */ | |
7219 | ||
7220 | void | |
7221 | unhold_keyboard_input (void) | |
7222 | { | |
7223 | kbd_is_on_hold = 0; | |
7224 | } | |
7225 | ||
7226 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7227 | ||
7228 | int | |
7229 | kbd_on_hold_p (void) | |
7230 | { | |
7231 | return kbd_is_on_hold; | |
7232 | } | |
7233 | ||
f388c88a EZ |
7234 | \f |
7235 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7236 | ||
934e2a68 EZ |
7237 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7238 | 0, 0, 0, | |
7239 | doc: /* Return a list of numerical process IDs of all running processes. | |
7240 | If this functionality is unsupported, return nil. | |
7241 | ||
f388c88a EZ |
7242 | See `process-attributes' for getting attributes of a process given its ID. */) |
7243 | (void) | |
7244 | { | |
7245 | return list_system_processes (); | |
7246 | } | |
7247 | ||
7248 | DEFUN ("process-attributes", Fprocess_attributes, | |
7249 | Sprocess_attributes, 1, 1, 0, | |
7250 | doc: /* Return attributes of the process given by its PID, a number. | |
7251 | ||
7252 | Value is an alist where each element is a cons cell of the form | |
7253 | ||
7254 | \(KEY . VALUE) | |
7255 | ||
7256 | If this functionality is unsupported, the value is nil. | |
7257 | ||
7258 | See `list-system-processes' for getting a list of all process IDs. | |
7259 | ||
7260 | The KEYs of the attributes that this function may return are listed | |
7261 | below, together with the type of the associated VALUE (in parentheses). | |
7262 | Not all platforms support all of these attributes; unsupported | |
7263 | attributes will not appear in the returned alist. | |
7264 | Unless explicitly indicated otherwise, numbers can have either | |
7265 | integer or floating point values. | |
7266 | ||
7267 | euid -- Effective user User ID of the process (number) | |
7268 | user -- User name corresponding to euid (string) | |
7269 | egid -- Effective user Group ID of the process (number) | |
7270 | group -- Group name corresponding to egid (string) | |
7271 | comm -- Command name (executable name only) (string) | |
7272 | state -- Process state code, such as "S", "R", or "T" (string) | |
7273 | ppid -- Parent process ID (number) | |
7274 | pgrp -- Process group ID (number) | |
7275 | sess -- Session ID, i.e. process ID of session leader (number) | |
7276 | ttname -- Controlling tty name (string) | |
7277 | tpgid -- ID of foreground process group on the process's tty (number) | |
7278 | minflt -- number of minor page faults (number) | |
7279 | majflt -- number of major page faults (number) | |
7280 | cminflt -- cumulative number of minor page faults (number) | |
7281 | cmajflt -- cumulative number of major page faults (number) | |
d35af63c PE |
7282 | utime -- user time used by the process, in (current-time) format, |
7283 | which is a list of integers (HIGH LOW USEC PSEC) | |
7284 | stime -- system time used by the process (current-time) | |
7285 | time -- sum of utime and stime (current-time) | |
7286 | cutime -- user time used by the process and its children (current-time) | |
7287 | cstime -- system time used by the process and its children (current-time) | |
7288 | ctime -- sum of cutime and cstime (current-time) | |
f388c88a EZ |
7289 | pri -- priority of the process (number) |
7290 | nice -- nice value of the process (number) | |
7291 | thcount -- process thread count (number) | |
d35af63c | 7292 | start -- time the process started (current-time) |
f388c88a EZ |
7293 | vsize -- virtual memory size of the process in KB's (number) |
7294 | rss -- resident set size of the process in KB's (number) | |
d35af63c | 7295 | etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format |
f388c88a EZ |
7296 | pcpu -- percents of CPU time used by the process (floating-point number) |
7297 | pmem -- percents of total physical memory used by process's resident set | |
7298 | (floating-point number) | |
7299 | args -- command line which invoked the process (string). */) | |
7300 | ( Lisp_Object pid) | |
7301 | { | |
7302 | return system_process_attributes (pid); | |
7303 | } | |
7304 | ||
7305 | \f | |
b82da769 GM |
7306 | /* This is not called "init_process" because that is the name of a |
7307 | Mach system call, so it would cause problems on Darwin systems. */ | |
f388c88a | 7308 | void |
b82da769 | 7309 | init_process_emacs (void) |
f388c88a EZ |
7310 | { |
7311 | #ifdef subprocesses | |
7312 | register int i; | |
7313 | ||
7314 | inhibit_sentinels = 0; | |
7315 | ||
7316 | #ifdef SIGCHLD | |
7317 | #ifndef CANNOT_DUMP | |
7318 | if (! noninteractive || initialized) | |
7319 | #endif | |
7320 | signal (SIGCHLD, sigchld_handler); | |
7321 | #endif | |
7322 | ||
7323 | FD_ZERO (&input_wait_mask); | |
7324 | FD_ZERO (&non_keyboard_wait_mask); | |
7325 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7326 | FD_ZERO (&write_mask); |
f388c88a | 7327 | max_process_desc = 0; |
3fad2ad2 | 7328 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7329 | |
7330 | #ifdef NON_BLOCKING_CONNECT | |
7331 | FD_ZERO (&connect_wait_mask); | |
7332 | num_pending_connects = 0; | |
7333 | #endif | |
7334 | ||
7335 | #ifdef ADAPTIVE_READ_BUFFERING | |
7336 | process_output_delay_count = 0; | |
7337 | process_output_skip = 0; | |
7338 | #endif | |
7339 | ||
7340 | /* Don't do this, it caused infinite select loops. The display | |
7341 | method should call add_keyboard_wait_descriptor on stdin if it | |
7342 | needs that. */ | |
7343 | #if 0 | |
7344 | FD_SET (0, &input_wait_mask); | |
7345 | #endif | |
7346 | ||
7347 | Vprocess_alist = Qnil; | |
7348 | #ifdef SIGCHLD | |
7349 | deleted_pid_list = Qnil; | |
7350 | #endif | |
7351 | for (i = 0; i < MAXDESC; i++) | |
7352 | { | |
7353 | chan_process[i] = Qnil; | |
7354 | proc_buffered_char[i] = -1; | |
7355 | } | |
7356 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7357 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7358 | #ifdef DATAGRAM_SOCKETS | |
7359 | memset (datagram_address, 0, sizeof datagram_address); | |
7360 | #endif | |
7361 | ||
f388c88a EZ |
7362 | { |
7363 | Lisp_Object subfeatures = Qnil; | |
7364 | const struct socket_options *sopt; | |
7365 | ||
7366 | #define ADD_SUBFEATURE(key, val) \ | |
7367 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7368 | ||
7369 | #ifdef NON_BLOCKING_CONNECT | |
7370 | ADD_SUBFEATURE (QCnowait, Qt); | |
7371 | #endif | |
7372 | #ifdef DATAGRAM_SOCKETS | |
7373 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7374 | #endif | |
7375 | #ifdef HAVE_SEQPACKET | |
7376 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7377 | #endif | |
7378 | #ifdef HAVE_LOCAL_SOCKETS | |
7379 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7380 | #endif | |
7381 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7382 | #ifdef AF_INET6 | |
7383 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7384 | #endif | |
7385 | #ifdef HAVE_GETSOCKNAME | |
7386 | ADD_SUBFEATURE (QCservice, Qt); | |
7387 | #endif | |
5e617bc2 | 7388 | #if defined (O_NONBLOCK) || defined (O_NDELAY) |
f388c88a EZ |
7389 | ADD_SUBFEATURE (QCserver, Qt); |
7390 | #endif | |
7391 | ||
7392 | for (sopt = socket_options; sopt->name; sopt++) | |
7393 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7394 | ||
7395 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7396 | } | |
f388c88a EZ |
7397 | |
7398 | #if defined (DARWIN_OS) | |
7399 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7400 | processes. As such, we only change the default value. */ | |
7401 | if (initialized) | |
7402 | { | |
f44bd759 PE |
7403 | char const *release = (STRINGP (Voperating_system_release) |
7404 | ? SSDATA (Voperating_system_release) | |
7405 | : 0); | |
6de0e799 | 7406 | if (!release || !release[0] || (release[0] < '7' && release[1] == '.')) { |
f388c88a EZ |
7407 | Vprocess_connection_type = Qnil; |
7408 | } | |
7409 | } | |
7410 | #endif | |
7411 | #endif /* subprocesses */ | |
7412 | kbd_is_on_hold = 0; | |
7413 | } | |
7414 | ||
7415 | void | |
7416 | syms_of_process (void) | |
7417 | { | |
7418 | #ifdef subprocesses | |
7419 | ||
cd3520a4 JB |
7420 | DEFSYM (Qprocessp, "processp"); |
7421 | DEFSYM (Qrun, "run"); | |
7422 | DEFSYM (Qstop, "stop"); | |
7423 | DEFSYM (Qsignal, "signal"); | |
f388c88a EZ |
7424 | |
7425 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7426 | here again. | |
934e2a68 | 7427 | |
f388c88a EZ |
7428 | Qexit = intern_c_string ("exit"); |
7429 | staticpro (&Qexit); */ | |
934e2a68 | 7430 | |
cd3520a4 JB |
7431 | DEFSYM (Qopen, "open"); |
7432 | DEFSYM (Qclosed, "closed"); | |
7433 | DEFSYM (Qconnect, "connect"); | |
7434 | DEFSYM (Qfailed, "failed"); | |
7435 | DEFSYM (Qlisten, "listen"); | |
7436 | DEFSYM (Qlocal, "local"); | |
7437 | DEFSYM (Qipv4, "ipv4"); | |
f388c88a | 7438 | #ifdef AF_INET6 |
cd3520a4 JB |
7439 | DEFSYM (Qipv6, "ipv6"); |
7440 | #endif | |
7441 | DEFSYM (Qdatagram, "datagram"); | |
7442 | DEFSYM (Qseqpacket, "seqpacket"); | |
7443 | ||
7444 | DEFSYM (QCport, ":port"); | |
7445 | DEFSYM (QCspeed, ":speed"); | |
7446 | DEFSYM (QCprocess, ":process"); | |
7447 | ||
7448 | DEFSYM (QCbytesize, ":bytesize"); | |
7449 | DEFSYM (QCstopbits, ":stopbits"); | |
7450 | DEFSYM (QCparity, ":parity"); | |
7451 | DEFSYM (Qodd, "odd"); | |
7452 | DEFSYM (Qeven, "even"); | |
7453 | DEFSYM (QCflowcontrol, ":flowcontrol"); | |
7454 | DEFSYM (Qhw, "hw"); | |
7455 | DEFSYM (Qsw, "sw"); | |
7456 | DEFSYM (QCsummary, ":summary"); | |
7457 | ||
7458 | DEFSYM (Qreal, "real"); | |
7459 | DEFSYM (Qnetwork, "network"); | |
7460 | DEFSYM (Qserial, "serial"); | |
7461 | DEFSYM (QCbuffer, ":buffer"); | |
7462 | DEFSYM (QChost, ":host"); | |
7463 | DEFSYM (QCservice, ":service"); | |
7464 | DEFSYM (QClocal, ":local"); | |
7465 | DEFSYM (QCremote, ":remote"); | |
7466 | DEFSYM (QCcoding, ":coding"); | |
7467 | DEFSYM (QCserver, ":server"); | |
7468 | DEFSYM (QCnowait, ":nowait"); | |
7469 | DEFSYM (QCsentinel, ":sentinel"); | |
7470 | DEFSYM (QClog, ":log"); | |
7471 | DEFSYM (QCnoquery, ":noquery"); | |
7472 | DEFSYM (QCstop, ":stop"); | |
7473 | DEFSYM (QCoptions, ":options"); | |
7474 | DEFSYM (QCplist, ":plist"); | |
7475 | ||
7476 | DEFSYM (Qlast_nonmenu_event, "last-nonmenu-event"); | |
934e2a68 | 7477 | |
f388c88a EZ |
7478 | staticpro (&Vprocess_alist); |
7479 | #ifdef SIGCHLD | |
7480 | staticpro (&deleted_pid_list); | |
7481 | #endif | |
934e2a68 | 7482 | |
f388c88a | 7483 | #endif /* subprocesses */ |
6720a7fb | 7484 | |
cd3520a4 JB |
7485 | DEFSYM (QCname, ":name"); |
7486 | DEFSYM (QCtype, ":type"); | |
7487 | ||
7488 | DEFSYM (Qeuid, "euid"); | |
7489 | DEFSYM (Qegid, "egid"); | |
7490 | DEFSYM (Quser, "user"); | |
7491 | DEFSYM (Qgroup, "group"); | |
7492 | DEFSYM (Qcomm, "comm"); | |
7493 | DEFSYM (Qstate, "state"); | |
7494 | DEFSYM (Qppid, "ppid"); | |
7495 | DEFSYM (Qpgrp, "pgrp"); | |
7496 | DEFSYM (Qsess, "sess"); | |
7497 | DEFSYM (Qttname, "ttname"); | |
7498 | DEFSYM (Qtpgid, "tpgid"); | |
7499 | DEFSYM (Qminflt, "minflt"); | |
7500 | DEFSYM (Qmajflt, "majflt"); | |
7501 | DEFSYM (Qcminflt, "cminflt"); | |
7502 | DEFSYM (Qcmajflt, "cmajflt"); | |
7503 | DEFSYM (Qutime, "utime"); | |
7504 | DEFSYM (Qstime, "stime"); | |
7505 | DEFSYM (Qtime, "time"); | |
7506 | DEFSYM (Qcutime, "cutime"); | |
7507 | DEFSYM (Qcstime, "cstime"); | |
7508 | DEFSYM (Qctime, "ctime"); | |
7509 | DEFSYM (Qpri, "pri"); | |
7510 | DEFSYM (Qnice, "nice"); | |
7511 | DEFSYM (Qthcount, "thcount"); | |
7512 | DEFSYM (Qstart, "start"); | |
7513 | DEFSYM (Qvsize, "vsize"); | |
7514 | DEFSYM (Qrss, "rss"); | |
7515 | DEFSYM (Qetime, "etime"); | |
7516 | DEFSYM (Qpcpu, "pcpu"); | |
7517 | DEFSYM (Qpmem, "pmem"); | |
7518 | DEFSYM (Qargs, "args"); | |
9057ff80 | 7519 | |
29208e82 | 7520 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
fb7ada5f | 7521 | doc: /* Non-nil means delete processes immediately when they exit. |
f388c88a EZ |
7522 | A value of nil means don't delete them until `list-processes' is run. */); |
7523 | ||
7524 | delete_exited_processes = 1; | |
7525 | ||
462aa963 | 7526 | #ifdef subprocesses |
29208e82 | 7527 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7528 | doc: /* Control type of device used to communicate with subprocesses. |
7529 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7530 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7531 | then a pipe is used in any case. | |
7532 | The value takes effect when `start-process' is called. */); | |
7533 | Vprocess_connection_type = Qt; | |
7534 | ||
7535 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7536 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7537 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7538 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7539 | is read in very small blocks, potentially resulting in very poor performance. | |
7540 | This behavior can be remedied to some extent by setting this variable to a | |
7541 | non-nil value, as it will automatically delay reading from such processes, to | |
7542 | allow them to produce more output before Emacs tries to read it. | |
7543 | If the value is t, the delay is reset after each write to the process; any other | |
7544 | non-nil value means that the delay is not reset on write. | |
7545 | The variable takes effect when `start-process' is called. */); | |
7546 | Vprocess_adaptive_read_buffering = Qt; | |
7547 | #endif | |
7548 | ||
7549 | defsubr (&Sprocessp); | |
7550 | defsubr (&Sget_process); | |
7551 | defsubr (&Sdelete_process); | |
7552 | defsubr (&Sprocess_status); | |
7553 | defsubr (&Sprocess_exit_status); | |
7554 | defsubr (&Sprocess_id); | |
7555 | defsubr (&Sprocess_name); | |
7556 | defsubr (&Sprocess_tty_name); | |
7557 | defsubr (&Sprocess_command); | |
7558 | defsubr (&Sset_process_buffer); | |
7559 | defsubr (&Sprocess_buffer); | |
7560 | defsubr (&Sprocess_mark); | |
7561 | defsubr (&Sset_process_filter); | |
7562 | defsubr (&Sprocess_filter); | |
7563 | defsubr (&Sset_process_sentinel); | |
7564 | defsubr (&Sprocess_sentinel); | |
7565 | defsubr (&Sset_process_window_size); | |
7566 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7567 | defsubr (&Sset_process_query_on_exit_flag); | |
7568 | defsubr (&Sprocess_query_on_exit_flag); | |
7569 | defsubr (&Sprocess_contact); | |
7570 | defsubr (&Sprocess_plist); | |
7571 | defsubr (&Sset_process_plist); | |
f388c88a EZ |
7572 | defsubr (&Sprocess_list); |
7573 | defsubr (&Sstart_process); | |
f388c88a EZ |
7574 | defsubr (&Sserial_process_configure); |
7575 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7576 | defsubr (&Sset_network_process_option); |
7577 | defsubr (&Smake_network_process); | |
7578 | defsubr (&Sformat_network_address); | |
5e617bc2 | 7579 | #if defined (HAVE_NET_IF_H) |
f388c88a EZ |
7580 | #ifdef SIOCGIFCONF |
7581 | defsubr (&Snetwork_interface_list); | |
7582 | #endif | |
5e617bc2 | 7583 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
f388c88a EZ |
7584 | defsubr (&Snetwork_interface_info); |
7585 | #endif | |
5e617bc2 | 7586 | #endif /* defined (HAVE_NET_IF_H) */ |
f388c88a EZ |
7587 | #ifdef DATAGRAM_SOCKETS |
7588 | defsubr (&Sprocess_datagram_address); | |
7589 | defsubr (&Sset_process_datagram_address); | |
7590 | #endif | |
7591 | defsubr (&Saccept_process_output); | |
7592 | defsubr (&Sprocess_send_region); | |
7593 | defsubr (&Sprocess_send_string); | |
7594 | defsubr (&Sinterrupt_process); | |
7595 | defsubr (&Skill_process); | |
7596 | defsubr (&Squit_process); | |
7597 | defsubr (&Sstop_process); | |
7598 | defsubr (&Scontinue_process); | |
7599 | defsubr (&Sprocess_running_child_p); | |
7600 | defsubr (&Sprocess_send_eof); | |
7601 | defsubr (&Ssignal_process); | |
7602 | defsubr (&Swaiting_for_user_input_p); | |
7603 | defsubr (&Sprocess_type); | |
7604 | defsubr (&Sset_process_coding_system); | |
7605 | defsubr (&Sprocess_coding_system); | |
7606 | defsubr (&Sset_process_filter_multibyte); | |
7607 | defsubr (&Sprocess_filter_multibyte_p); | |
7608 | ||
7609 | #endif /* subprocesses */ | |
7610 | ||
6720a7fb | 7611 | defsubr (&Sget_buffer_process); |
52a1b894 | 7612 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7613 | defsubr (&Slist_system_processes); |
a20878b6 | 7614 | defsubr (&Sprocess_attributes); |
6720a7fb | 7615 | } |