Commit | Line | Data |
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d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
95df8112 | 2 | |
acaf905b | 3 | Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2012 |
95df8112 | 4 | Free Software Foundation, Inc. |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
d0d6b7c5 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
d0d6b7c5 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d0d6b7c5 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
6a09a33b PE |
23 | |
24 | #define PROCESS_INLINE EXTERN_INLINE | |
25 | ||
68c45bf0 | 26 | #include <signal.h> |
d0d6b7c5 JB |
27 | #include <stdio.h> |
28 | #include <errno.h> | |
29 | #include <setjmp.h> | |
6c60eb9f | 30 | #include <sys/types.h> /* Some typedefs are used in sys/file.h. */ |
d0d6b7c5 JB |
31 | #include <sys/file.h> |
32 | #include <sys/stat.h> | |
d7306fe6 | 33 | #include <setjmp.h> |
934e2a68 | 34 | |
93b4f699 | 35 | #include <unistd.h> |
e98d950b | 36 | #include <fcntl.h> |
e98d950b | 37 | |
0898ca10 JB |
38 | #include "lisp.h" |
39 | ||
f388c88a EZ |
40 | /* Only MS-DOS does not define `subprocesses'. */ |
41 | #ifdef subprocesses | |
42 | ||
d0d6b7c5 JB |
43 | #include <sys/socket.h> |
44 | #include <netdb.h> | |
45 | #include <netinet/in.h> | |
46 | #include <arpa/inet.h> | |
e690ca94 KS |
47 | |
48 | /* Are local (unix) sockets supported? */ | |
4624371d | 49 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
50 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
51 | #define AF_LOCAL AF_UNIX | |
52 | #endif | |
53 | #ifdef AF_LOCAL | |
54 | #define HAVE_LOCAL_SOCKETS | |
55 | #include <sys/un.h> | |
56 | #endif | |
57 | #endif | |
d0d6b7c5 | 58 | |
d0d6b7c5 | 59 | #include <sys/ioctl.h> |
5e617bc2 | 60 | #if defined (HAVE_NET_IF_H) |
32bc6709 DN |
61 | #include <net/if.h> |
62 | #endif /* HAVE_NET_IF_H */ | |
d0d6b7c5 | 63 | |
5e617bc2 | 64 | #if defined (HAVE_IFADDRS_H) |
377538cb JD |
65 | /* Must be after net/if.h */ |
66 | #include <ifaddrs.h> | |
67 | ||
68 | /* We only use structs from this header when we use getifaddrs. */ | |
5e617bc2 | 69 | #if defined (HAVE_NET_IF_DL_H) |
377538cb JD |
70 | #include <net/if_dl.h> |
71 | #endif | |
72 | ||
73 | #endif | |
74 | ||
d0d6b7c5 JB |
75 | #ifdef NEED_BSDTTY |
76 | #include <bsdtty.h> | |
77 | #endif | |
78 | ||
08116b48 CY |
79 | #ifdef HAVE_RES_INIT |
80 | #include <netinet/in.h> | |
81 | #include <arpa/nameser.h> | |
82 | #include <resolv.h> | |
83 | #endif | |
84 | ||
3d608a86 J |
85 | #ifdef HAVE_UTIL_H |
86 | #include <util.h> | |
87 | #endif | |
88 | ||
9bf58201 DN |
89 | #ifdef HAVE_PTY_H |
90 | #include <pty.h> | |
91 | #endif | |
92 | ||
f388c88a EZ |
93 | #endif /* subprocesses */ |
94 | ||
d0d6b7c5 | 95 | #include "systime.h" |
36ebaafa | 96 | #include "systty.h" |
d0d6b7c5 | 97 | |
d0d6b7c5 | 98 | #include "window.h" |
5bbf78c1 | 99 | #include "character.h" |
e5560ff7 | 100 | #include "buffer.h" |
0fa1789e | 101 | #include "coding.h" |
d0d6b7c5 | 102 | #include "process.h" |
428a555e | 103 | #include "frame.h" |
d0d6b7c5 JB |
104 | #include "termhooks.h" |
105 | #include "termopts.h" | |
106 | #include "commands.h" | |
3ec68006 | 107 | #include "keyboard.h" |
ececcbec | 108 | #include "blockinput.h" |
dfcf069d | 109 | #include "dispextern.h" |
e0016554 | 110 | #include "composite.h" |
30904ab7 | 111 | #include "atimer.h" |
f388c88a EZ |
112 | #include "sysselect.h" |
113 | #include "syssignal.h" | |
114 | #include "syswait.h" | |
8af55556 TZ |
115 | #ifdef HAVE_GNUTLS |
116 | #include "gnutls.h" | |
117 | #endif | |
d0d6b7c5 | 118 | |
0949d2b6 | 119 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 | 120 | #include "xgselect.h" |
0949d2b6 | 121 | #endif |
3d608a86 J |
122 | #ifdef HAVE_NS |
123 | #include "nsterm.h" | |
124 | #endif | |
57507bf8 | 125 | |
b8df54ff PE |
126 | /* Work around GCC 4.7.0 bug with strict overflow checking; see |
127 | <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>. | |
128 | These lines can be removed once the GCC bug is fixed. */ | |
129 | #if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__ | |
130 | # pragma GCC diagnostic ignored "-Wstrict-overflow" | |
131 | #endif | |
132 | ||
fdb183d6 DN |
133 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
134 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
135 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
136 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
137 | Lisp_Object QCname, QCtype; | |
138 | \f | |
139 | /* Non-zero if keyboard input is on hold, zero otherwise. */ | |
140 | ||
141 | static int kbd_is_on_hold; | |
142 | ||
fdb183d6 DN |
143 | /* Nonzero means don't run process sentinels. This is used |
144 | when exiting. */ | |
145 | int inhibit_sentinels; | |
146 | ||
f388c88a EZ |
147 | #ifdef subprocesses |
148 | ||
dd2281ae | 149 | Lisp_Object Qprocessp; |
955cbe7b PE |
150 | static Lisp_Object Qrun, Qstop, Qsignal; |
151 | static Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; | |
152 | Lisp_Object Qlocal; | |
153 | static Lisp_Object Qipv4, Qdatagram, Qseqpacket; | |
154 | static Lisp_Object Qreal, Qnetwork, Qserial; | |
e1652a86 | 155 | #ifdef AF_INET6 |
955cbe7b | 156 | static Lisp_Object Qipv6; |
e1652a86 | 157 | #endif |
955cbe7b PE |
158 | static Lisp_Object QCport, QCprocess; |
159 | Lisp_Object QCspeed; | |
d888760c GM |
160 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; |
161 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
955cbe7b PE |
162 | static Lisp_Object QCbuffer, QChost, QCservice; |
163 | static Lisp_Object QClocal, QCremote, QCcoding; | |
164 | static Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; | |
165 | static Lisp_Object QCsentinel, QClog, QCoptions, QCplist; | |
166 | static Lisp_Object Qlast_nonmenu_event; | |
3635ecad JR |
167 | /* QCfamily is declared and initialized in xfaces.c, |
168 | QCfilter in keyboard.c. */ | |
169 | extern Lisp_Object QCfamily, QCfilter; | |
170 | ||
d0d6b7c5 JB |
171 | /* Qexit is declared and initialized in eval.c. */ |
172 | ||
e0f712ba AC |
173 | /* QCfamily is defined in xfaces.c. */ |
174 | extern Lisp_Object QCfamily; | |
175 | /* QCfilter is defined in keyboard.c. */ | |
176 | extern Lisp_Object QCfilter; | |
177 | ||
4d2b044c DA |
178 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
179 | #define NETCONN1_P(p) (EQ (p->type, Qnetwork)) | |
180 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
181 | #define SERIALCONN1_P(p) (EQ (p->type, Qserial)) | |
d0d6b7c5 | 182 | |
5f0929a7 RS |
183 | #ifndef HAVE_H_ERRNO |
184 | extern int h_errno; | |
185 | #endif | |
186 | ||
d0d6b7c5 | 187 | /* Number of events of change of status of a process. */ |
e4d81efc | 188 | static EMACS_INT process_tick; |
d0d6b7c5 | 189 | /* Number of events for which the user or sentinel has been notified. */ |
e4d81efc | 190 | static EMACS_INT update_tick; |
d0d6b7c5 | 191 | |
dd2a17ab KS |
192 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
193 | ||
82d6e50b | 194 | /* Only W32 has this, it really means that select can't take write mask. */ |
dd2a17ab KS |
195 | #ifdef BROKEN_NON_BLOCKING_CONNECT |
196 | #undef NON_BLOCKING_CONNECT | |
82d6e50b | 197 | #define SELECT_CANT_DO_WRITE_MASK |
dd2a17ab KS |
198 | #else |
199 | #ifndef NON_BLOCKING_CONNECT | |
dd2a17ab KS |
200 | #ifdef HAVE_SELECT |
201 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
202 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
203 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
204 | #define NON_BLOCKING_CONNECT | |
205 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
206 | #endif /* O_NONBLOCK || O_NDELAY */ | |
207 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
208 | #endif /* HAVE_SELECT */ | |
dd2a17ab KS |
209 | #endif /* NON_BLOCKING_CONNECT */ |
210 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
211 | ||
e690ca94 KS |
212 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
213 | this system. We need to read full packets, so we need a | |
214 | "non-destructive" select. So we require either native select, | |
215 | or emulation of select using FIONREAD. */ | |
216 | ||
e690ca94 KS |
217 | #ifdef BROKEN_DATAGRAM_SOCKETS |
218 | #undef DATAGRAM_SOCKETS | |
219 | #else | |
220 | #ifndef DATAGRAM_SOCKETS | |
e690ca94 KS |
221 | #if defined (HAVE_SELECT) || defined (FIONREAD) |
222 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
223 | #define DATAGRAM_SOCKETS | |
224 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
225 | #endif /* HAVE_SELECT || FIONREAD */ | |
e690ca94 KS |
226 | #endif /* DATAGRAM_SOCKETS */ |
227 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
228 | ||
f00c449b SM |
229 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
230 | # define HAVE_SEQPACKET | |
231 | #endif | |
232 | ||
6b61353c | 233 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
6b61353c KH |
234 | #define ADAPTIVE_READ_BUFFERING |
235 | #endif | |
6b61353c KH |
236 | |
237 | #ifdef ADAPTIVE_READ_BUFFERING | |
d35af63c | 238 | #define READ_OUTPUT_DELAY_INCREMENT (EMACS_TIME_RESOLUTION / 100) |
6b61353c KH |
239 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) |
240 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
241 | ||
db853b7a KS |
242 | /* Number of processes which have a non-zero read_output_delay, |
243 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
244 | |
245 | static int process_output_delay_count; | |
246 | ||
db853b7a | 247 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
248 | |
249 | static int process_output_skip; | |
250 | ||
6b61353c KH |
251 | #else |
252 | #define process_output_delay_count 0 | |
253 | #endif | |
254 | ||
40ccffa6 | 255 | static void create_process (Lisp_Object, char **, Lisp_Object); |
006c5daa | 256 | #ifdef SIGIO |
f57e2426 | 257 | static int keyboard_bit_set (SELECT_TYPE *); |
006c5daa | 258 | #endif |
f57e2426 J |
259 | static void deactivate_process (Lisp_Object); |
260 | static void status_notify (struct Lisp_Process *); | |
261 | static int read_process_output (Lisp_Object, int); | |
262 | static void create_pty (Lisp_Object); | |
41d03b9a | 263 | |
583dcae4 | 264 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 265 | to detect C-g. It isn't actually used when doing interrupt input. */ |
5e617bc2 | 266 | #if defined (HAVE_WINDOW_SYSTEM) && !defined (USE_ASYNC_EVENTS) |
44ade2e9 RS |
267 | #define POLL_FOR_INPUT |
268 | #endif | |
269 | ||
d3da34e0 JB |
270 | static Lisp_Object get_process (register Lisp_Object name); |
271 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 272 | |
f388c88a EZ |
273 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
274 | ||
275 | static SELECT_TYPE input_wait_mask; | |
276 | ||
994d9841 | 277 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
278 | |
279 | static SELECT_TYPE non_keyboard_wait_mask; | |
280 | ||
994d9841 | 281 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
282 | |
283 | static SELECT_TYPE non_process_wait_mask; | |
284 | ||
3fad2ad2 | 285 | /* Mask for selecting for write. */ |
994d9841 | 286 | |
3fad2ad2 | 287 | static SELECT_TYPE write_mask; |
994d9841 | 288 | |
bad49fc7 | 289 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
290 | /* Mask of bits indicating the descriptors that we wait for connect to |
291 | complete on. Once they complete, they are removed from this mask | |
292 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
293 | ||
294 | static SELECT_TYPE connect_wait_mask; | |
295 | ||
296 | /* Number of bits set in connect_wait_mask. */ | |
297 | static int num_pending_connects; | |
f388c88a | 298 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 299 | |
7d0e672e RS |
300 | /* The largest descriptor currently in use for a process object. */ |
301 | static int max_process_desc; | |
302 | ||
3fad2ad2 J |
303 | /* The largest descriptor currently in use for input. */ |
304 | static int max_input_desc; | |
994d9841 | 305 | |
d0d6b7c5 | 306 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
40ccffa6 | 307 | static Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
308 | |
309 | /* Alist of elements (NAME . PROCESS) */ | |
40ccffa6 | 310 | static Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
311 | |
312 | /* Buffered-ahead input char from process, indexed by channel. | |
313 | -1 means empty (no char is buffered). | |
314 | Used on sys V where the only way to tell if there is any | |
315 | output from the process is to read at least one char. | |
316 | Always -1 on systems that support FIONREAD. */ | |
317 | ||
40ccffa6 | 318 | static int proc_buffered_char[MAXDESC]; |
dd2281ae | 319 | |
0fa1789e | 320 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
321 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
322 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 323 | |
e690ca94 KS |
324 | #ifdef DATAGRAM_SOCKETS |
325 | /* Table of `partner address' for datagram sockets. */ | |
40ccffa6 | 326 | static struct sockaddr_and_len { |
e690ca94 KS |
327 | struct sockaddr *sa; |
328 | int len; | |
329 | } datagram_address[MAXDESC]; | |
330 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 331 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
332 | #else |
333 | #define DATAGRAM_CHAN_P(chan) (0) | |
334 | #define DATAGRAM_CONN_P(proc) (0) | |
335 | #endif | |
336 | ||
93b4f699 RS |
337 | /* Maximum number of bytes to send to a pty without an eof. */ |
338 | static int pty_max_bytes; | |
3b9a3dfa | 339 | |
6a09a33b PE |
340 | /* These setters are used only in this file, so they can be private. */ |
341 | static inline void | |
342 | pset_buffer (struct Lisp_Process *p, Lisp_Object val) | |
343 | { | |
344 | p->buffer = val; | |
345 | } | |
346 | static inline void | |
347 | pset_command (struct Lisp_Process *p, Lisp_Object val) | |
348 | { | |
349 | p->command = val; | |
350 | } | |
351 | static inline void | |
352 | pset_decode_coding_system (struct Lisp_Process *p, Lisp_Object val) | |
353 | { | |
354 | p->decode_coding_system = val; | |
355 | } | |
356 | static inline void | |
357 | pset_decoding_buf (struct Lisp_Process *p, Lisp_Object val) | |
358 | { | |
359 | p->decoding_buf = val; | |
360 | } | |
361 | static inline void | |
362 | pset_encode_coding_system (struct Lisp_Process *p, Lisp_Object val) | |
363 | { | |
364 | p->encode_coding_system = val; | |
365 | } | |
366 | static inline void | |
367 | pset_encoding_buf (struct Lisp_Process *p, Lisp_Object val) | |
368 | { | |
369 | p->encoding_buf = val; | |
370 | } | |
371 | static inline void | |
372 | pset_filter (struct Lisp_Process *p, Lisp_Object val) | |
373 | { | |
374 | p->filter = val; | |
375 | } | |
376 | static inline void | |
377 | pset_log (struct Lisp_Process *p, Lisp_Object val) | |
378 | { | |
379 | p->log = val; | |
380 | } | |
381 | static inline void | |
382 | pset_mark (struct Lisp_Process *p, Lisp_Object val) | |
383 | { | |
384 | p->mark = val; | |
385 | } | |
386 | static inline void | |
387 | pset_name (struct Lisp_Process *p, Lisp_Object val) | |
388 | { | |
389 | p->name = val; | |
390 | } | |
391 | static inline void | |
392 | pset_plist (struct Lisp_Process *p, Lisp_Object val) | |
393 | { | |
394 | p->plist = val; | |
395 | } | |
396 | static inline void | |
397 | pset_sentinel (struct Lisp_Process *p, Lisp_Object val) | |
398 | { | |
399 | p->sentinel = val; | |
400 | } | |
401 | static inline void | |
402 | pset_status (struct Lisp_Process *p, Lisp_Object val) | |
403 | { | |
404 | p->status = val; | |
405 | } | |
406 | static inline void | |
407 | pset_tty_name (struct Lisp_Process *p, Lisp_Object val) | |
408 | { | |
409 | p->tty_name = val; | |
410 | } | |
411 | static inline void | |
412 | pset_type (struct Lisp_Process *p, Lisp_Object val) | |
413 | { | |
414 | p->type = val; | |
415 | } | |
416 | static inline void | |
417 | pset_write_queue (struct Lisp_Process *p, Lisp_Object val) | |
418 | { | |
419 | p->write_queue = val; | |
420 | } | |
421 | ||
d0d6b7c5 | 422 | \f |
3fad2ad2 | 423 | |
40ccffa6 | 424 | static struct fd_callback_data |
3fad2ad2 J |
425 | { |
426 | fd_callback func; | |
427 | void *data; | |
428 | #define FOR_READ 1 | |
429 | #define FOR_WRITE 2 | |
430 | int condition; /* mask of the defines above. */ | |
431 | } fd_callback_info[MAXDESC]; | |
432 | ||
433 | ||
434 | /* Add a file descriptor FD to be monitored for when read is possible. | |
435 | When read is possible, call FUNC with argument DATA. */ | |
436 | ||
437 | void | |
438 | add_read_fd (int fd, fd_callback func, void *data) | |
439 | { | |
a54e2c05 | 440 | eassert (fd < MAXDESC); |
3fad2ad2 J |
441 | add_keyboard_wait_descriptor (fd); |
442 | ||
443 | fd_callback_info[fd].func = func; | |
444 | fd_callback_info[fd].data = data; | |
445 | fd_callback_info[fd].condition |= FOR_READ; | |
446 | } | |
447 | ||
448 | /* Stop monitoring file descriptor FD for when read is possible. */ | |
449 | ||
450 | void | |
451 | delete_read_fd (int fd) | |
452 | { | |
a54e2c05 | 453 | eassert (fd < MAXDESC); |
3fad2ad2 J |
454 | delete_keyboard_wait_descriptor (fd); |
455 | ||
456 | fd_callback_info[fd].condition &= ~FOR_READ; | |
457 | if (fd_callback_info[fd].condition == 0) | |
458 | { | |
459 | fd_callback_info[fd].func = 0; | |
460 | fd_callback_info[fd].data = 0; | |
461 | } | |
462 | } | |
463 | ||
464 | /* Add a file descriptor FD to be monitored for when write is possible. | |
465 | When write is possible, call FUNC with argument DATA. */ | |
466 | ||
467 | void | |
468 | add_write_fd (int fd, fd_callback func, void *data) | |
469 | { | |
a54e2c05 | 470 | eassert (fd < MAXDESC); |
3fad2ad2 J |
471 | FD_SET (fd, &write_mask); |
472 | if (fd > max_input_desc) | |
473 | max_input_desc = fd; | |
474 | ||
475 | fd_callback_info[fd].func = func; | |
476 | fd_callback_info[fd].data = data; | |
477 | fd_callback_info[fd].condition |= FOR_WRITE; | |
478 | } | |
479 | ||
480 | /* Stop monitoring file descriptor FD for when write is possible. */ | |
481 | ||
482 | void | |
483 | delete_write_fd (int fd) | |
484 | { | |
485 | int lim = max_input_desc; | |
486 | ||
a54e2c05 | 487 | eassert (fd < MAXDESC); |
3fad2ad2 J |
488 | FD_CLR (fd, &write_mask); |
489 | fd_callback_info[fd].condition &= ~FOR_WRITE; | |
490 | if (fd_callback_info[fd].condition == 0) | |
491 | { | |
492 | fd_callback_info[fd].func = 0; | |
493 | fd_callback_info[fd].data = 0; | |
494 | ||
495 | if (fd == max_input_desc) | |
496 | for (fd = lim; fd >= 0; fd--) | |
497 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) | |
498 | { | |
499 | max_input_desc = fd; | |
500 | break; | |
501 | } | |
51b59d79 | 502 | |
3fad2ad2 J |
503 | } |
504 | } | |
505 | ||
506 | \f | |
d0d6b7c5 JB |
507 | /* Compute the Lisp form of the process status, p->status, from |
508 | the numeric status that was returned by `wait'. */ | |
509 | ||
bba104c1 | 510 | static Lisp_Object status_convert (int); |
f9738840 | 511 | |
ff6daed3 | 512 | static void |
d3da34e0 | 513 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 514 | { |
6bfd98e7 | 515 | eassert (p->raw_status_new); |
6a09a33b | 516 | pset_status (p, status_convert (p->raw_status)); |
6bfd98e7 | 517 | p->raw_status_new = 0; |
d0d6b7c5 JB |
518 | } |
519 | ||
177c0ea7 | 520 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
521 | the list that we use internally. */ |
522 | ||
ff6daed3 | 523 | static Lisp_Object |
bba104c1 | 524 | status_convert (int w) |
d0d6b7c5 JB |
525 | { |
526 | if (WIFSTOPPED (w)) | |
527 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
528 | else if (WIFEXITED (w)) | |
13294f95 | 529 | return Fcons (Qexit, Fcons (make_number (WEXITSTATUS (w)), |
d0d6b7c5 JB |
530 | WCOREDUMP (w) ? Qt : Qnil)); |
531 | else if (WIFSIGNALED (w)) | |
532 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
533 | WCOREDUMP (w) ? Qt : Qnil)); | |
534 | else | |
535 | return Qrun; | |
536 | } | |
537 | ||
538 | /* Given a status-list, extract the three pieces of information | |
539 | and store them individually through the three pointers. */ | |
540 | ||
ff6daed3 | 541 | static void |
d3da34e0 | 542 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, int *coredump) |
d0d6b7c5 JB |
543 | { |
544 | Lisp_Object tem; | |
545 | ||
bcd69aea | 546 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
547 | { |
548 | *symbol = l; | |
549 | *code = 0; | |
550 | *coredump = 0; | |
551 | } | |
552 | else | |
553 | { | |
70949dac KR |
554 | *symbol = XCAR (l); |
555 | tem = XCDR (l); | |
556 | *code = XFASTINT (XCAR (tem)); | |
557 | tem = XCDR (tem); | |
d0d6b7c5 JB |
558 | *coredump = !NILP (tem); |
559 | } | |
560 | } | |
561 | ||
562 | /* Return a string describing a process status list. */ | |
563 | ||
116c423c | 564 | static Lisp_Object |
d3da34e0 | 565 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 566 | { |
4d2b044c | 567 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
568 | Lisp_Object symbol; |
569 | int code, coredump; | |
570 | Lisp_Object string, string2; | |
571 | ||
572 | decode_status (status, &symbol, &code, &coredump); | |
573 | ||
574 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
575 | { | |
68c45bf0 | 576 | char *signame; |
ca9c0567 | 577 | synchronize_system_messages_locale (); |
68c45bf0 | 578 | signame = strsignal (code); |
b97ad9ea | 579 | if (signame == 0) |
66bd43d1 KH |
580 | string = build_string ("unknown"); |
581 | else | |
582 | { | |
583 | int c1, c2; | |
584 | ||
d7ea76b4 | 585 | string = build_unibyte_string (signame); |
66bd43d1 KH |
586 | if (! NILP (Vlocale_coding_system)) |
587 | string = (code_convert_string_norecord | |
588 | (string, Vlocale_coding_system, 0)); | |
42a5b22f | 589 | c1 = STRING_CHAR (SDATA (string)); |
5da9919f | 590 | c2 = downcase (c1); |
66bd43d1 | 591 | if (c1 != c2) |
4735b74e | 592 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 593 | } |
d0d6b7c5 | 594 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
595 | return concat2 (string, string2); |
596 | } | |
597 | else if (EQ (symbol, Qexit)) | |
598 | { | |
116c423c KS |
599 | if (NETCONN1_P (p)) |
600 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
601 | if (code == 0) |
602 | return build_string ("finished\n"); | |
f2980264 | 603 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 604 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
605 | return concat3 (build_string ("exited abnormally with code "), |
606 | string, string2); | |
d0d6b7c5 | 607 | } |
dd2a17ab KS |
608 | else if (EQ (symbol, Qfailed)) |
609 | { | |
610 | string = Fnumber_to_string (make_number (code)); | |
611 | string2 = build_string ("\n"); | |
e690ca94 KS |
612 | return concat3 (build_string ("failed with code "), |
613 | string, string2); | |
dd2a17ab | 614 | } |
d0d6b7c5 JB |
615 | else |
616 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
617 | } | |
618 | \f | |
619 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 620 | |
9bf58201 DN |
621 | /* The file name of the pty opened by allocate_pty. */ |
622 | static char pty_name[24]; | |
623 | ||
875e6b94 KH |
624 | /* Open an available pty, returning a file descriptor. |
625 | Return -1 on failure. | |
626 | The file name of the terminal corresponding to the pty | |
627 | is left in the variable pty_name. */ | |
628 | ||
ff6daed3 | 629 | static int |
d3da34e0 | 630 | allocate_pty (void) |
d0d6b7c5 | 631 | { |
d0d6b7c5 JB |
632 | int fd; |
633 | ||
634 | #ifdef PTY_ITERATION | |
635 | PTY_ITERATION | |
636 | #else | |
be02381c | 637 | register int c, i; |
d0d6b7c5 JB |
638 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) |
639 | for (i = 0; i < 16; i++) | |
640 | #endif | |
641 | { | |
642 | #ifdef PTY_NAME_SPRINTF | |
643 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
644 | #else |
645 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
646 | #endif /* no PTY_NAME_SPRINTF */ |
647 | ||
4d7c105e RS |
648 | #ifdef PTY_OPEN |
649 | PTY_OPEN; | |
650 | #else /* no PTY_OPEN */ | |
34967d0f | 651 | { |
34967d0f SM |
652 | { /* Some systems name their pseudoterminals so that there are gaps in |
653 | the usual sequence - for example, on HP9000/S700 systems, there | |
654 | are no pseudoterminals with names ending in 'f'. So we wait for | |
655 | three failures in a row before deciding that we've reached the | |
656 | end of the ptys. */ | |
657 | int failed_count = 0; | |
57048744 | 658 | struct stat stb; |
f3d9532b | 659 | |
34967d0f SM |
660 | if (stat (pty_name, &stb) < 0) |
661 | { | |
662 | failed_count++; | |
663 | if (failed_count >= 3) | |
664 | return -1; | |
665 | } | |
666 | else | |
667 | failed_count = 0; | |
32676c08 | 668 | } |
34967d0f SM |
669 | # ifdef O_NONBLOCK |
670 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
671 | # else | |
672 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
673 | # endif | |
34967d0f | 674 | } |
4d7c105e | 675 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
676 | |
677 | if (fd >= 0) | |
678 | { | |
679 | /* check to make certain that both sides are available | |
680 | this avoids a nasty yet stupid bug in rlogins */ | |
681 | #ifdef PTY_TTY_NAME_SPRINTF | |
682 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 683 | #else |
63136da6 | 684 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 685 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
686 | if (access (pty_name, 6) != 0) |
687 | { | |
68c45bf0 | 688 | emacs_close (fd); |
132d0475 | 689 | # ifndef __sgi |
d0d6b7c5 | 690 | continue; |
34967d0f | 691 | # else |
d0d6b7c5 | 692 | return -1; |
132d0475 | 693 | # endif /* __sgi */ |
d0d6b7c5 | 694 | } |
d0d6b7c5 JB |
695 | setup_pty (fd); |
696 | return fd; | |
697 | } | |
698 | } | |
699 | return -1; | |
700 | } | |
701 | #endif /* HAVE_PTYS */ | |
702 | \f | |
ff6daed3 | 703 | static Lisp_Object |
d3da34e0 | 704 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
705 | { |
706 | register Lisp_Object val, tem, name1; | |
707 | register struct Lisp_Process *p; | |
31c286f7 PE |
708 | char suffix[sizeof "<>" + INT_STRLEN_BOUND (printmax_t)]; |
709 | printmax_t i; | |
d0d6b7c5 | 710 | |
98423852 | 711 | p = allocate_process (); |
62efea5e DA |
712 | /* Initialize Lisp data. Note that allocate_process initializes all |
713 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
6a09a33b PE |
714 | pset_status (p, Qrun); |
715 | pset_mark (p, Fmake_marker ()); | |
d0d6b7c5 | 716 | |
62efea5e DA |
717 | /* Initialize non-Lisp data. Note that allocate_process zeroes out all |
718 | non-Lisp data, so do it only for slots which should not be zero. */ | |
719 | p->infd = -1; | |
720 | p->outfd = -1; | |
6b61353c | 721 | |
8af55556 TZ |
722 | #ifdef HAVE_GNUTLS |
723 | p->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
724 | #endif | |
725 | ||
d0d6b7c5 JB |
726 | /* If name is already in use, modify it until it is unused. */ |
727 | ||
728 | name1 = name; | |
729 | for (i = 1; ; i++) | |
730 | { | |
731 | tem = Fget_process (name1); | |
732 | if (NILP (tem)) break; | |
a8290ec3 | 733 | name1 = concat2 (name, make_formatted_string (suffix, "<%"pMd">", i)); |
d0d6b7c5 JB |
734 | } |
735 | name = name1; | |
6a09a33b | 736 | pset_name (p, name); |
23d6bb9c | 737 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
738 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
739 | return val; | |
740 | } | |
741 | ||
ff6daed3 | 742 | static void |
d3da34e0 | 743 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
744 | { |
745 | register Lisp_Object pair; | |
746 | ||
747 | pair = Frassq (proc, Vprocess_alist); | |
748 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
749 | |
750 | deactivate_process (proc); | |
751 | } | |
03f04413 | 752 | |
d0d6b7c5 JB |
753 | \f |
754 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 755 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 756 | (Lisp_Object object) |
d0d6b7c5 | 757 | { |
4ee3e309 | 758 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
759 | } |
760 | ||
761 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 762 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 763 | (register Lisp_Object name) |
d0d6b7c5 | 764 | { |
bcd69aea | 765 | if (PROCESSP (name)) |
d0d6b7c5 | 766 | return name; |
b7826503 | 767 | CHECK_STRING (name); |
d0d6b7c5 JB |
768 | return Fcdr (Fassoc (name, Vprocess_alist)); |
769 | } | |
770 | ||
ebb9e16f JB |
771 | /* This is how commands for the user decode process arguments. It |
772 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
773 | Buffers denote the first process in the buffer, and nil denotes the | |
774 | current buffer. */ | |
d0d6b7c5 | 775 | |
77b221b1 | 776 | static Lisp_Object |
d3da34e0 | 777 | get_process (register Lisp_Object name) |
d0d6b7c5 | 778 | { |
1619761d KH |
779 | register Lisp_Object proc, obj; |
780 | if (STRINGP (name)) | |
781 | { | |
782 | obj = Fget_process (name); | |
783 | if (NILP (obj)) | |
784 | obj = Fget_buffer (name); | |
785 | if (NILP (obj)) | |
d5db4077 | 786 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
787 | } |
788 | else if (NILP (name)) | |
789 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 790 | else |
1619761d KH |
791 | obj = name; |
792 | ||
793 | /* Now obj should be either a buffer object or a process object. | |
794 | */ | |
795 | if (BUFFERP (obj)) | |
d0d6b7c5 | 796 | { |
1619761d | 797 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 798 | if (NILP (proc)) |
4b4deea2 | 799 | error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj), name))); |
d0d6b7c5 | 800 | } |
d0d6b7c5 | 801 | else |
1619761d | 802 | { |
b7826503 | 803 | CHECK_PROCESS (obj); |
1619761d KH |
804 | proc = obj; |
805 | } | |
806 | return proc; | |
d0d6b7c5 JB |
807 | } |
808 | ||
a5cfdda8 KS |
809 | |
810 | #ifdef SIGCHLD | |
811 | /* Fdelete_process promises to immediately forget about the process, but in | |
812 | reality, Emacs needs to remember those processes until they have been | |
813 | treated by sigchld_handler; otherwise this handler would consider the | |
814 | process as being synchronous and say that the synchronous process is | |
815 | dead. */ | |
816 | static Lisp_Object deleted_pid_list; | |
817 | #endif | |
818 | ||
d0d6b7c5 | 819 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
820 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
821 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
822 | nil, indicating the current buffer's process. */) | |
5842a27b | 823 | (register Lisp_Object process) |
d0d6b7c5 | 824 | { |
ff6daed3 KS |
825 | register struct Lisp_Process *p; |
826 | ||
4ee3e309 | 827 | process = get_process (process); |
ff6daed3 KS |
828 | p = XPROCESS (process); |
829 | ||
6bfd98e7 | 830 | p->raw_status_new = 0; |
d888760c | 831 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 832 | { |
6a09a33b | 833 | pset_status (p, Fcons (Qexit, Fcons (make_number (0), Qnil))); |
60f0fb11 | 834 | p->tick = ++process_tick; |
ff6daed3 | 835 | status_notify (p); |
e42bdf01 | 836 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 837 | } |
60f0fb11 | 838 | else if (p->infd >= 0) |
d0d6b7c5 | 839 | { |
a5cfdda8 KS |
840 | #ifdef SIGCHLD |
841 | Lisp_Object symbol; | |
d311d28c | 842 | pid_t pid = p->pid; |
a5cfdda8 KS |
843 | |
844 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 845 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
846 | /* GC treated elements set to nil. */ |
847 | Fdelq (Qnil, deleted_pid_list)); | |
848 | /* If the process has already signaled, remove it from the list. */ | |
849 | if (p->raw_status_new) | |
850 | update_status (p); | |
4d2b044c DA |
851 | symbol = p->status; |
852 | if (CONSP (p->status)) | |
853 | symbol = XCAR (p->status); | |
a5cfdda8 | 854 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) |
29ed4d51 CY |
855 | deleted_pid_list |
856 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
857 | else |
858 | #endif | |
859 | { | |
860 | Fkill_process (process, Qnil); | |
861 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ | |
6a09a33b | 862 | pset_status (p, Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil))); |
60f0fb11 | 863 | p->tick = ++process_tick; |
a5cfdda8 | 864 | status_notify (p); |
e42bdf01 | 865 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 866 | } |
d0d6b7c5 | 867 | } |
4ee3e309 | 868 | remove_process (process); |
d0d6b7c5 JB |
869 | return Qnil; |
870 | } | |
871 | \f | |
872 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
873 | doc: /* Return the status of PROCESS. |
874 | The returned value is one of the following symbols: | |
875 | run -- for a process that is running. | |
876 | stop -- for a process stopped but continuable. | |
877 | exit -- for a process that has exited. | |
878 | signal -- for a process that has got a fatal signal. | |
879 | open -- for a network stream connection that is open. | |
e690ca94 | 880 | listen -- for a network stream server that is listening. |
fdb82f93 | 881 | closed -- for a network stream connection that is closed. |
e4984112 KS |
882 | connect -- when waiting for a non-blocking connection to complete. |
883 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
884 | nil -- if arg is a process name and no such process exists. |
885 | PROCESS may be a process, a buffer, the name of a process, or | |
886 | nil, indicating the current buffer's process. */) | |
5842a27b | 887 | (register Lisp_Object process) |
d0d6b7c5 JB |
888 | { |
889 | register struct Lisp_Process *p; | |
890 | register Lisp_Object status; | |
343f4114 | 891 | |
4ee3e309 EN |
892 | if (STRINGP (process)) |
893 | process = Fget_process (process); | |
343f4114 | 894 | else |
4ee3e309 | 895 | process = get_process (process); |
343f4114 | 896 | |
4ee3e309 EN |
897 | if (NILP (process)) |
898 | return process; | |
343f4114 | 899 | |
4ee3e309 | 900 | p = XPROCESS (process); |
6bfd98e7 | 901 | if (p->raw_status_new) |
d0d6b7c5 | 902 | update_status (p); |
4d2b044c | 903 | status = p->status; |
bcd69aea | 904 | if (CONSP (status)) |
70949dac | 905 | status = XCAR (status); |
d888760c | 906 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 907 | { |
e690ca94 | 908 | if (EQ (status, Qexit)) |
d0d6b7c5 | 909 | status = Qclosed; |
4d2b044c | 910 | else if (EQ (p->command, Qt)) |
e690ca94 KS |
911 | status = Qstop; |
912 | else if (EQ (status, Qrun)) | |
913 | status = Qopen; | |
d0d6b7c5 JB |
914 | } |
915 | return status; | |
916 | } | |
917 | ||
918 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
919 | 1, 1, 0, | |
fdb82f93 PJ |
920 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
921 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 922 | (register Lisp_Object process) |
d0d6b7c5 | 923 | { |
b7826503 | 924 | CHECK_PROCESS (process); |
6bfd98e7 | 925 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 | 926 | update_status (XPROCESS (process)); |
4d2b044c DA |
927 | if (CONSP (XPROCESS (process)->status)) |
928 | return XCAR (XCDR (XPROCESS (process)->status)); | |
d0d6b7c5 JB |
929 | return make_number (0); |
930 | } | |
931 | ||
932 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 933 | doc: /* Return the process id of PROCESS. |
f3d9532b | 934 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 935 | For a network connection, this value is nil. */) |
5842a27b | 936 | (register Lisp_Object process) |
d0d6b7c5 | 937 | { |
d311d28c | 938 | pid_t pid; |
d30fe779 | 939 | |
b7826503 | 940 | CHECK_PROCESS (process); |
d30fe779 EZ |
941 | pid = XPROCESS (process)->pid; |
942 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
943 | } |
944 | ||
945 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
946 | doc: /* Return the name of PROCESS, as a string. |
947 | This is the name of the program invoked in PROCESS, | |
948 | possibly modified to make it unique among process names. */) | |
5842a27b | 949 | (register Lisp_Object process) |
d0d6b7c5 | 950 | { |
b7826503 | 951 | CHECK_PROCESS (process); |
4d2b044c | 952 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
953 | } |
954 | ||
955 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
956 | doc: /* Return the command that was executed to start PROCESS. |
957 | This is a list of strings, the first string being the program executed | |
958 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
959 | For a network or serial process, this is nil (process is running) or t |
960 | \(process is stopped). */) | |
5842a27b | 961 | (register Lisp_Object process) |
d0d6b7c5 | 962 | { |
b7826503 | 963 | CHECK_PROCESS (process); |
4d2b044c | 964 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
965 | } |
966 | ||
3b9a3dfa | 967 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
968 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
969 | This is the terminal that the process itself reads and writes on, | |
970 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 971 | (register Lisp_Object process) |
3b9a3dfa | 972 | { |
b7826503 | 973 | CHECK_PROCESS (process); |
4d2b044c | 974 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
975 | } |
976 | ||
d0d6b7c5 | 977 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 | 978 | 2, 2, 0, |
76147d94 DD |
979 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). |
980 | Return BUFFER. */) | |
5842a27b | 981 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 982 | { |
e690ca94 KS |
983 | struct Lisp_Process *p; |
984 | ||
b7826503 | 985 | CHECK_PROCESS (process); |
d0d6b7c5 | 986 | if (!NILP (buffer)) |
b7826503 | 987 | CHECK_BUFFER (buffer); |
e690ca94 | 988 | p = XPROCESS (process); |
6a09a33b | 989 | pset_buffer (p, buffer); |
d888760c | 990 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 991 | pset_childp (p, Fplist_put (p->childp, QCbuffer, buffer)); |
03f04413 | 992 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
993 | return buffer; |
994 | } | |
995 | ||
996 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
997 | 1, 1, 0, |
998 | doc: /* Return the buffer PROCESS is associated with. | |
999 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 1000 | (register Lisp_Object process) |
d0d6b7c5 | 1001 | { |
b7826503 | 1002 | CHECK_PROCESS (process); |
4d2b044c | 1003 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
1004 | } |
1005 | ||
1006 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
1007 | 1, 1, 0, |
1008 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 1009 | (register Lisp_Object process) |
d0d6b7c5 | 1010 | { |
b7826503 | 1011 | CHECK_PROCESS (process); |
4d2b044c | 1012 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
1013 | } |
1014 | ||
1015 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
1016 | 2, 2, 0, |
1017 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 1018 | A value of t means stop accepting output from the process. |
3452df9e KS |
1019 | |
1020 | When a process has a filter, its buffer is not used for output. | |
1021 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 1022 | passed to the filter. |
3452df9e | 1023 | |
fdb82f93 | 1024 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
1025 | The string argument is normally a multibyte string, except: |
1026 | - if the process' input coding system is no-conversion or raw-text, | |
1027 | it is a unibyte string (the non-converted input), or else | |
1028 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
1029 | string (the result of converting the decoded input multibyte | |
1030 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 1031 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 1032 | { |
471f86b9 | 1033 | struct Lisp_Process *p; |
177c0ea7 | 1034 | |
b7826503 | 1035 | CHECK_PROCESS (process); |
471f86b9 GM |
1036 | p = XPROCESS (process); |
1037 | ||
1038 | /* Don't signal an error if the process' input file descriptor | |
1039 | is closed. This could make debugging Lisp more difficult, | |
1040 | for example when doing something like | |
1041 | ||
1042 | (setq process (start-process ...)) | |
1043 | (debug) | |
1044 | (set-process-filter process ...) */ | |
177c0ea7 | 1045 | |
60f0fb11 | 1046 | if (p->infd >= 0) |
a69281ff | 1047 | { |
4d2b044c | 1048 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 1049 | { |
60f0fb11 SM |
1050 | FD_CLR (p->infd, &input_wait_mask); |
1051 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1052 | } |
4d2b044c | 1053 | else if (EQ (p->filter, Qt) |
d888760c | 1054 | /* Network or serial process not stopped: */ |
4d2b044c | 1055 | && !EQ (p->command, Qt)) |
471f86b9 | 1056 | { |
60f0fb11 SM |
1057 | FD_SET (p->infd, &input_wait_mask); |
1058 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 1059 | } |
a69281ff | 1060 | } |
177c0ea7 | 1061 | |
6a09a33b | 1062 | pset_filter (p, filter); |
d888760c | 1063 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1064 | pset_childp (p, Fplist_put (p->childp, QCfilter, filter)); |
03f04413 | 1065 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1066 | return filter; |
1067 | } | |
1068 | ||
1069 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1070 | 1, 1, 0, |
1071 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1072 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 1073 | (register Lisp_Object process) |
d0d6b7c5 | 1074 | { |
b7826503 | 1075 | CHECK_PROCESS (process); |
4d2b044c | 1076 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1077 | } |
1078 | ||
1079 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1080 | 2, 2, 0, |
1081 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1082 | The sentinel is called as a function when the process changes state. | |
1083 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 1084 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1085 | { |
6b61353c KH |
1086 | struct Lisp_Process *p; |
1087 | ||
b7826503 | 1088 | CHECK_PROCESS (process); |
6b61353c KH |
1089 | p = XPROCESS (process); |
1090 | ||
6a09a33b | 1091 | pset_sentinel (p, sentinel); |
d888760c | 1092 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6a09a33b | 1093 | pset_childp (p, Fplist_put (p->childp, QCsentinel, sentinel)); |
d0d6b7c5 JB |
1094 | return sentinel; |
1095 | } | |
1096 | ||
1097 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1098 | 1, 1, 0, |
1099 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1100 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 1101 | (register Lisp_Object process) |
d0d6b7c5 | 1102 | { |
b7826503 | 1103 | CHECK_PROCESS (process); |
4d2b044c | 1104 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1105 | } |
1106 | ||
396df322 | 1107 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1108 | Sset_process_window_size, 3, 3, 0, |
1109 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1110 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1111 | { |
b7826503 | 1112 | CHECK_PROCESS (process); |
af5a5a98 AS |
1113 | CHECK_RANGED_INTEGER (height, 0, INT_MAX); |
1114 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); | |
177c0ea7 | 1115 | |
60f0fb11 SM |
1116 | if (XPROCESS (process)->infd < 0 |
1117 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1118 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1119 | return Qnil; |
1120 | else | |
1121 | return Qt; | |
1122 | } | |
1123 | ||
52a1b894 | 1124 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1125 | Fset_process_inherit_coding_system_flag, |
1126 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1127 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1128 | If the second argument FLAG is non-nil, then the variable | |
1129 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1130 | will be bound to the value of the coding system used to decode | |
1131 | the process output. | |
1132 | ||
1133 | This is useful when the coding system specified for the process buffer | |
1134 | leaves either the character code conversion or the end-of-line conversion | |
1135 | unspecified, or if the coding system used to decode the process output | |
1136 | is more appropriate for saving the process buffer. | |
1137 | ||
1138 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1139 | starting the process is an alternative way of setting the inherit flag | |
016a35df GM |
1140 | for the process which will run. |
1141 | ||
1142 | This function returns FLAG. */) | |
5842a27b | 1143 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1144 | { |
b7826503 | 1145 | CHECK_PROCESS (process); |
60f0fb11 | 1146 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1147 | return flag; |
1148 | } | |
1149 | ||
e690ca94 KS |
1150 | DEFUN ("set-process-query-on-exit-flag", |
1151 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1152 | 2, 2, 0, | |
1153 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1154 | If the second argument FLAG is non-nil, Emacs will query the user before |
016a35df GM |
1155 | exiting or killing a buffer if PROCESS is running. This function |
1156 | returns FLAG. */) | |
5842a27b | 1157 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1158 | { |
b7826503 | 1159 | CHECK_PROCESS (process); |
60f0fb11 | 1160 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1161 | return flag; |
d0d6b7c5 | 1162 | } |
312c9964 | 1163 | |
e690ca94 KS |
1164 | DEFUN ("process-query-on-exit-flag", |
1165 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1166 | 1, 1, 0, |
f3d9532b | 1167 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1168 | (register Lisp_Object process) |
de282a05 | 1169 | { |
b7826503 | 1170 | CHECK_PROCESS (process); |
60f0fb11 | 1171 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1172 | } |
1173 | ||
e690ca94 KS |
1174 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, |
1175 | 1, 2, 0, | |
1176 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1177 | For a network or serial connection, the value depends on the optional |
1178 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1179 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1180 | connection. If KEY is t, the complete contact information for the | |
1181 | connection is returned, else the specific value for the keyword KEY is | |
1182 | returned. See `make-network-process' or `make-serial-process' for a | |
1183 | list of keywords. */) | |
5842a27b | 1184 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1185 | { |
1186 | Lisp_Object contact; | |
1187 | ||
1188 | CHECK_PROCESS (process); | |
4d2b044c | 1189 | contact = XPROCESS (process)->childp; |
e690ca94 KS |
1190 | |
1191 | #ifdef DATAGRAM_SOCKETS | |
1192 | if (DATAGRAM_CONN_P (process) | |
1193 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1194 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1195 | Fprocess_datagram_address (process)); |
1196 | #endif | |
1197 | ||
d888760c | 1198 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1199 | return contact; |
d888760c | 1200 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1201 | return Fcons (Fplist_get (contact, QChost), |
1202 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1203 | if (NILP (key) && SERIALCONN_P (process)) |
1204 | return Fcons (Fplist_get (contact, QCport), | |
1205 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1206 | return Fplist_get (contact, key); |
de282a05 RS |
1207 | } |
1208 | ||
faa7db08 KS |
1209 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1210 | 1, 1, 0, | |
1211 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1212 | (register Lisp_Object process) |
365aee82 | 1213 | { |
ac4a7584 | 1214 | CHECK_PROCESS (process); |
4d2b044c | 1215 | return XPROCESS (process)->plist; |
ac4a7584 | 1216 | } |
365aee82 | 1217 | |
faa7db08 KS |
1218 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1219 | 2, 2, 0, | |
26a086c6 | 1220 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1221 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1222 | { |
365aee82 | 1223 | CHECK_PROCESS (process); |
faa7db08 | 1224 | CHECK_LIST (plist); |
365aee82 | 1225 | |
6a09a33b | 1226 | pset_plist (XPROCESS (process), plist); |
26a086c6 | 1227 | return plist; |
365aee82 KS |
1228 | } |
1229 | ||
312c9964 RS |
1230 | #if 0 /* Turned off because we don't currently record this info |
1231 | in the process. Perhaps add it. */ | |
1232 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1233 | doc: /* Return the connection type of PROCESS. |
1234 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1235 | a socket connection. */) | |
5842a27b | 1236 | (Lisp_Object process) |
312c9964 | 1237 | { |
4d2b044c | 1238 | return XPROCESS (process)->type; |
312c9964 RS |
1239 | } |
1240 | #endif | |
2a7bb882 | 1241 | |
d888760c GM |
1242 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1243 | doc: /* Return the connection type of PROCESS. | |
1244 | The value is either the symbol `real', `network', or `serial'. | |
1245 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1246 | nil, indicating the current buffer's process. */) | |
5842a27b | 1247 | (Lisp_Object process) |
d888760c GM |
1248 | { |
1249 | Lisp_Object proc; | |
1250 | proc = get_process (process); | |
4d2b044c | 1251 | return XPROCESS (proc)->type; |
d888760c | 1252 | } |
991234f0 | 1253 | |
991234f0 | 1254 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1255 | 1, 2, 0, |
991234f0 | 1256 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1257 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1258 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1259 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1260 | number in the string, even when present in ADDRESS. |
1261 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1262 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1263 | { |
991234f0 KS |
1264 | if (NILP (address)) |
1265 | return Qnil; | |
1266 | ||
1267 | if (STRINGP (address)) /* AF_LOCAL */ | |
1268 | return address; | |
1269 | ||
e1652a86 | 1270 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1271 | { |
1272 | register struct Lisp_Vector *p = XVECTOR (address); | |
d311d28c | 1273 | ptrdiff_t size = p->header.size; |
ded83665 | 1274 | Lisp_Object args[10]; |
0dccee41 | 1275 | int nargs, i; |
991234f0 | 1276 | |
eab3844f | 1277 | if (size == 4 || (size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1278 | { |
1279 | args[0] = build_string ("%d.%d.%d.%d"); | |
1280 | nargs = 4; | |
1281 | } | |
eab3844f | 1282 | else if (size == 5) |
0dccee41 KS |
1283 | { |
1284 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1285 | nargs = 5; | |
1286 | } | |
eab3844f | 1287 | else if (size == 8 || (size == 9 && !NILP (omit_port))) |
e1652a86 KS |
1288 | { |
1289 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1290 | nargs = 8; | |
1291 | } | |
eab3844f | 1292 | else if (size == 9) |
e1652a86 KS |
1293 | { |
1294 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1295 | nargs = 9; | |
1296 | } | |
0dccee41 | 1297 | else |
991234f0 KS |
1298 | return Qnil; |
1299 | ||
0dccee41 | 1300 | for (i = 0; i < nargs; i++) |
cbf23adb | 1301 | { |
d311d28c | 1302 | if (! RANGED_INTEGERP (0, p->contents[i], 65535)) |
cbf23adb JB |
1303 | return Qnil; |
1304 | ||
1305 | if (nargs <= 5 /* IPv4 */ | |
1306 | && i < 4 /* host, not port */ | |
d311d28c | 1307 | && XINT (p->contents[i]) > 255) |
cbf23adb JB |
1308 | return Qnil; |
1309 | ||
1310 | args[i+1] = p->contents[i]; | |
1311 | } | |
1312 | ||
0dccee41 | 1313 | return Fformat (nargs+1, args); |
991234f0 KS |
1314 | } |
1315 | ||
1316 | if (CONSP (address)) | |
1317 | { | |
1318 | Lisp_Object args[2]; | |
1319 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1320 | args[1] = Fcar (address); |
991234f0 | 1321 | return Fformat (2, args); |
991234f0 KS |
1322 | } |
1323 | ||
1324 | return Qnil; | |
1325 | } | |
d0d6b7c5 JB |
1326 | |
1327 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1328 | doc: /* Return a list of all processes. */) |
5842a27b | 1329 | (void) |
d0d6b7c5 JB |
1330 | { |
1331 | return Fmapcar (Qcdr, Vprocess_alist); | |
1332 | } | |
1333 | \f | |
b0310da4 JB |
1334 | /* Starting asynchronous inferior processes. */ |
1335 | ||
d3da34e0 | 1336 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1337 | |
d0d6b7c5 | 1338 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1339 | doc: /* Start a program in a subprocess. Return the process object for it. |
1340 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1341 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1342 | |
1343 | Process output (both standard output and standard error streams) goes | |
1344 | at end of BUFFER, unless you specify an output stream or filter | |
1345 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1346 | this process is not associated with any buffer. |
1347 | ||
6b8bc570 CY |
1348 | PROGRAM is the program file name. It is searched for in `exec-path' |
1349 | (which see). If nil, just associate a pty with the buffer. Remaining | |
1350 | arguments are strings to give program as arguments. | |
320aebc9 | 1351 | |
4b6c5eee EZ |
1352 | If you want to separate standard output from standard error, invoke |
1353 | the command through a shell and redirect one of them using the shell | |
1354 | syntax. | |
320aebc9 | 1355 | |
3ecdf100 | 1356 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
f66c7cf8 | 1357 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 | 1358 | { |
1e30af70 | 1359 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1360 | register unsigned char **new_argv; |
f66c7cf8 | 1361 | ptrdiff_t i; |
d311d28c | 1362 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1363 | |
1364 | buffer = args[1]; | |
1365 | if (!NILP (buffer)) | |
1366 | buffer = Fget_buffer_create (buffer); | |
1367 | ||
1e30af70 JB |
1368 | /* Make sure that the child will be able to chdir to the current |
1369 | buffer's current directory, or its unhandled equivalent. We | |
1370 | can't just have the child check for an error when it does the | |
1371 | chdir, since it's in a vfork. | |
1372 | ||
1373 | We have to GCPRO around this because Fexpand_file_name and | |
1374 | Funhandled_file_name_directory might call a file name handling | |
1375 | function. The argument list is protected by the caller, so all | |
1376 | we really have to worry about is buffer. */ | |
1377 | { | |
1378 | struct gcpro gcpro1, gcpro2; | |
1379 | ||
4b4deea2 | 1380 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1381 | |
1382 | GCPRO2 (buffer, current_dir); | |
1383 | ||
ca319910 SM |
1384 | current_dir = Funhandled_file_name_directory (current_dir); |
1385 | if (NILP (current_dir)) | |
1386 | /* If the file name handler says that current_dir is unreachable, use | |
1387 | a sensible default. */ | |
1388 | current_dir = build_string ("~/"); | |
1389 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1390 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1391 | report_file_error ("Setting current directory", | |
4b4deea2 | 1392 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1393 | |
1394 | UNGCPRO; | |
1395 | } | |
1396 | ||
d0d6b7c5 | 1397 | name = args[0]; |
b7826503 | 1398 | CHECK_STRING (name); |
d0d6b7c5 JB |
1399 | |
1400 | program = args[2]; | |
1401 | ||
850d0752 NR |
1402 | if (!NILP (program)) |
1403 | CHECK_STRING (program); | |
d0d6b7c5 | 1404 | |
d0d6b7c5 | 1405 | proc = make_process (name); |
b0310da4 JB |
1406 | /* If an error occurs and we can't start the process, we want to |
1407 | remove it from the process list. This means that each error | |
1408 | check in create_process doesn't need to call remove_process | |
1409 | itself; it's all taken care of here. */ | |
1410 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 | 1411 | |
6a09a33b PE |
1412 | pset_childp (XPROCESS (proc), Qt); |
1413 | pset_plist (XPROCESS (proc), Qnil); | |
1414 | pset_type (XPROCESS (proc), Qreal); | |
1415 | pset_buffer (XPROCESS (proc), buffer); | |
1416 | pset_sentinel (XPROCESS (proc), Qnil); | |
1417 | pset_filter (XPROCESS (proc), Qnil); | |
1418 | pset_command (XPROCESS (proc), Flist (nargs - 2, args + 2)); | |
d0d6b7c5 | 1419 | |
8af55556 TZ |
1420 | #ifdef HAVE_GNUTLS |
1421 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1422 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
6a09a33b | 1423 | pset_gnutls_cred_type (XPROCESS (proc), Qnil); |
8af55556 TZ |
1424 | #endif |
1425 | ||
6b61353c | 1426 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1427 | XPROCESS (proc)->adaptive_read_buffering |
1428 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1429 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1430 | #endif |
1431 | ||
7af71e17 | 1432 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1433 | if (BUFFERP (buffer)) |
4d2b044c | 1434 | set_marker_both (XPROCESS (proc)->mark, buffer, |
d8a2934e RS |
1435 | BUF_ZV (XBUFFER (buffer)), |
1436 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1437 | |
67918941 | 1438 | { |
d5d4ae71 KH |
1439 | /* Decide coding systems for communicating with the process. Here |
1440 | we don't setup the structure coding_system nor pay attention to | |
1441 | unibyte mode. They are done in create_process. */ | |
1442 | ||
67918941 RS |
1443 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1444 | Lisp_Object coding_systems = Qt; | |
1445 | Lisp_Object val, *args2; | |
a4a37e65 | 1446 | struct gcpro gcpro1, gcpro2; |
67918941 | 1447 | |
d5d4ae71 KH |
1448 | val = Vcoding_system_for_read; |
1449 | if (NILP (val)) | |
67918941 | 1450 | { |
38182d90 | 1451 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1452 | args2[0] = Qstart_process; |
1453 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1454 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1455 | if (!NILP (program)) |
1456 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1457 | UNGCPRO; |
1458 | if (CONSP (coding_systems)) | |
70949dac | 1459 | val = XCAR (coding_systems); |
67918941 | 1460 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1461 | val = XCAR (Vdefault_process_coding_system); |
67918941 | 1462 | } |
6a09a33b | 1463 | pset_decode_coding_system (XPROCESS (proc), val); |
67918941 | 1464 | |
d5d4ae71 KH |
1465 | val = Vcoding_system_for_write; |
1466 | if (NILP (val)) | |
67918941 RS |
1467 | { |
1468 | if (EQ (coding_systems, Qt)) | |
1469 | { | |
38182d90 | 1470 | args2 = alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1471 | args2[0] = Qstart_process; |
1472 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1473 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1474 | if (!NILP (program)) |
1475 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1476 | UNGCPRO; |
1477 | } | |
1478 | if (CONSP (coding_systems)) | |
70949dac | 1479 | val = XCDR (coding_systems); |
67918941 | 1480 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1481 | val = XCDR (Vdefault_process_coding_system); |
67918941 | 1482 | } |
6a09a33b | 1483 | pset_encode_coding_system (XPROCESS (proc), val); |
e1dbe924 | 1484 | /* Note: At this moment, the above coding system may leave |
fcaf8878 KH |
1485 | text-conversion or eol-conversion unspecified. They will be |
1486 | decided after we read output from the process and decode it by | |
1487 | some coding system, or just before we actually send a text to | |
1488 | the process. */ | |
67918941 | 1489 | } |
0fa1789e | 1490 | |
a4a37e65 | 1491 | |
6a09a33b | 1492 | pset_decoding_buf (XPROCESS (proc), empty_unibyte_string); |
850d0752 | 1493 | XPROCESS (proc)->decoding_carryover = 0; |
6a09a33b | 1494 | pset_encoding_buf (XPROCESS (proc), empty_unibyte_string); |
ed30cf85 | 1495 | |
850d0752 NR |
1496 | XPROCESS (proc)->inherit_coding_system_flag |
1497 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1498 | |
850d0752 NR |
1499 | if (!NILP (program)) |
1500 | { | |
1501 | /* If program file name is not absolute, search our path for it. | |
1502 | Put the name we will really use in TEM. */ | |
1503 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1504 | && !(SCHARS (program) > 1 | |
1505 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1506 | { | |
1507 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1508 | ||
1509 | tem = Qnil; | |
1510 | GCPRO4 (name, program, buffer, current_dir); | |
1511 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1512 | UNGCPRO; | |
1513 | if (NILP (tem)) | |
1514 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1515 | tem = Fexpand_file_name (tem, Qnil); | |
1516 | } | |
1517 | else | |
1518 | { | |
1519 | if (!NILP (Ffile_directory_p (program))) | |
1520 | error ("Specified program for new process is a directory"); | |
1521 | tem = program; | |
1522 | } | |
ed30cf85 | 1523 | |
850d0752 NR |
1524 | /* If program file name starts with /: for quoting a magic name, |
1525 | discard that. */ | |
1526 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1527 | && SREF (tem, 1) == ':') | |
1528 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1529 | |
77bf07e1 | 1530 | { |
fcaf8878 | 1531 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1532 | struct gcpro gcpro1; |
1533 | GCPRO1 (tem); | |
a4a37e65 | 1534 | |
850d0752 NR |
1535 | /* Encode the file name and put it in NEW_ARGV. |
1536 | That's where the child will use it to execute the program. */ | |
1537 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1538 | |
850d0752 NR |
1539 | /* Here we encode arguments by the coding system used for sending |
1540 | data to the process. We don't support using different coding | |
1541 | systems for encoding arguments and for encoding data sent to the | |
1542 | process. */ | |
77bf07e1 | 1543 | |
850d0752 NR |
1544 | for (i = 3; i < nargs; i++) |
1545 | { | |
1546 | tem = Fcons (args[i], tem); | |
1547 | CHECK_STRING (XCAR (tem)); | |
1548 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1549 | { |
1550 | if (NILP (arg_encoding)) | |
1551 | arg_encoding = (complement_process_encoding_system | |
4d2b044c | 1552 | (XPROCESS (proc)->encode_coding_system)); |
fcaf8878 KH |
1553 | XSETCAR (tem, |
1554 | code_convert_string_norecord | |
1555 | (XCAR (tem), arg_encoding, 1)); | |
1556 | } | |
850d0752 | 1557 | } |
a4a37e65 | 1558 | |
850d0752 NR |
1559 | UNGCPRO; |
1560 | } | |
0fa1789e | 1561 | |
850d0752 NR |
1562 | /* Now that everything is encoded we can collect the strings into |
1563 | NEW_ARGV. */ | |
38182d90 | 1564 | new_argv = alloca ((nargs - 1) * sizeof *new_argv); |
850d0752 | 1565 | new_argv[nargs - 2] = 0; |
52a1b894 | 1566 | |
c5101a77 | 1567 | for (i = nargs - 2; i-- != 0; ) |
850d0752 NR |
1568 | { |
1569 | new_argv[i] = SDATA (XCAR (tem)); | |
1570 | tem = XCDR (tem); | |
1571 | } | |
1572 | ||
1573 | create_process (proc, (char **) new_argv, current_dir); | |
1574 | } | |
1575 | else | |
1576 | create_pty (proc); | |
d0d6b7c5 | 1577 | |
b0310da4 | 1578 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1579 | } |
1580 | ||
b0310da4 | 1581 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1582 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1583 | an error and the process wasn't started successfully, so we should |
1584 | remove it from the process list. */ | |
1585 | static Lisp_Object | |
d3da34e0 | 1586 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1587 | { |
bcd69aea | 1588 | if (!PROCESSP (proc)) |
b0310da4 JB |
1589 | abort (); |
1590 | ||
2bf26180 GM |
1591 | /* Was PROC started successfully? |
1592 | -2 is used for a pty with no process, eg for gdb. */ | |
1593 | if (XPROCESS (proc)->pid <= 0 && XPROCESS (proc)->pid != -2) | |
b0310da4 JB |
1594 | remove_process (proc); |
1595 | ||
1596 | return Qnil; | |
1597 | } | |
1598 | ||
ff6daed3 | 1599 | static void |
d3da34e0 | 1600 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1601 | { |
30904ab7 | 1602 | /* Nothing to do. */ |
d0d6b7c5 JB |
1603 | } |
1604 | ||
30904ab7 | 1605 | |
40ccffa6 | 1606 | static void |
d3da34e0 | 1607 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1608 | { |
29ed4d51 CY |
1609 | int inchannel, outchannel; |
1610 | pid_t pid; | |
d0d6b7c5 | 1611 | int sv[2]; |
2c4df143 YM |
1612 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1613 | int wait_child_setup[2]; | |
1614 | #endif | |
0dc70c33 KH |
1615 | sigset_t procmask; |
1616 | sigset_t blocked; | |
1617 | struct sigaction sigint_action; | |
1618 | struct sigaction sigquit_action; | |
c0ad4ea5 | 1619 | struct sigaction sigpipe_action; |
0dc70c33 KH |
1620 | #ifdef AIX |
1621 | struct sigaction sighup_action; | |
1622 | #endif | |
ecd1f654 KH |
1623 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1624 | volatile int forkin, forkout; | |
1625 | volatile int pty_flag = 0; | |
3ec68006 | 1626 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1627 | extern char **environ; |
3ec68006 | 1628 | #endif |
d0d6b7c5 | 1629 | |
d0d6b7c5 JB |
1630 | inchannel = outchannel = -1; |
1631 | ||
1632 | #ifdef HAVE_PTYS | |
fe45da4e | 1633 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1634 | outchannel = inchannel = allocate_pty (); |
1635 | ||
d0d6b7c5 JB |
1636 | if (inchannel >= 0) |
1637 | { | |
2af70a0c RS |
1638 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1639 | /* On most USG systems it does not work to open the pty's tty here, | |
1640 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1641 | #ifdef O_NOCTTY |
1642 | /* Don't let this terminal become our controlling terminal | |
1643 | (in case we don't have one). */ | |
68c45bf0 | 1644 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1645 | #else |
68c45bf0 | 1646 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1647 | #endif |
1648 | if (forkin < 0) | |
1649 | report_file_error ("Opening pty", Qnil); | |
1650 | #else | |
1651 | forkin = forkout = -1; | |
2af70a0c | 1652 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1653 | pty_flag = 1; |
1654 | } | |
1655 | else | |
1656 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1657 | { |
fc14013c KH |
1658 | int tem; |
1659 | tem = pipe (sv); | |
1660 | if (tem < 0) | |
1661 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1662 | inchannel = sv[0]; |
1663 | forkout = sv[1]; | |
fc14013c KH |
1664 | tem = pipe (sv); |
1665 | if (tem < 0) | |
1666 | { | |
68c45bf0 PE |
1667 | emacs_close (inchannel); |
1668 | emacs_close (forkout); | |
fc14013c KH |
1669 | report_file_error ("Creating pipe", Qnil); |
1670 | } | |
d0d6b7c5 JB |
1671 | outchannel = sv[1]; |
1672 | forkin = sv[0]; | |
1673 | } | |
d0d6b7c5 | 1674 | |
2c4df143 YM |
1675 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1676 | { | |
1677 | int tem; | |
1678 | ||
1679 | tem = pipe (wait_child_setup); | |
1680 | if (tem < 0) | |
1681 | report_file_error ("Creating pipe", Qnil); | |
1682 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1683 | if (tem >= 0) | |
1684 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1685 | if (tem < 0) | |
1686 | { | |
1687 | emacs_close (wait_child_setup[0]); | |
1688 | emacs_close (wait_child_setup[1]); | |
1689 | report_file_error ("Setting file descriptor flags", Qnil); | |
1690 | } | |
1691 | } | |
1692 | #endif | |
1693 | ||
d0d6b7c5 JB |
1694 | #ifdef O_NONBLOCK |
1695 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1696 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1697 | #else |
1698 | #ifdef O_NDELAY | |
1699 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1700 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1701 | #endif |
1702 | #endif | |
1703 | ||
1704 | /* Record this as an active process, with its channels. | |
1705 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1706 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1707 | XPROCESS (process)->infd = inchannel; |
1708 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1709 | |
1710 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1711 | It was only used for getting the foreground tty process, so now | |
1712 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1713 | more portable (see USG_SUBTTY_WORKS above). */ | |
1714 | ||
60f0fb11 | 1715 | XPROCESS (process)->pty_flag = pty_flag; |
6a09a33b | 1716 | pset_status (XPROCESS (process), Qrun); |
d0d6b7c5 JB |
1717 | |
1718 | /* Delay interrupts until we have a chance to store | |
1719 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1720 | sigemptyset (&blocked); |
1721 | #ifdef SIGCHLD | |
1722 | sigaddset (&blocked, SIGCHLD); | |
1723 | #endif | |
351e611f | 1724 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1725 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1726 | this sets the parent's signal handlers as well as the child's. | |
1727 | So delay all interrupts whose handlers the child might munge, | |
1728 | and record the current handlers so they can be restored later. */ | |
1729 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1730 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
c0ad4ea5 | 1731 | sigaddset (&blocked, SIGPIPE); sigaction (SIGPIPE, 0, &sigpipe_action); |
0dc70c33 KH |
1732 | #ifdef AIX |
1733 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1734 | #endif | |
351e611f | 1735 | #endif /* HAVE_WORKING_VFORK */ |
123403e4 | 1736 | pthread_sigmask (SIG_BLOCK, &blocked, &procmask); |
d0d6b7c5 | 1737 | |
3081bf8d | 1738 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1739 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1740 | if (inchannel > max_process_desc) |
1741 | max_process_desc = inchannel; | |
1742 | ||
d0d6b7c5 JB |
1743 | /* Until we store the proper pid, enable sigchld_handler |
1744 | to recognize an unknown pid as standing for this process. | |
1745 | It is very important not to let this `marker' value stay | |
1746 | in the table after this function has returned; if it does | |
1747 | it might cause call-process to hang and subsequent asynchronous | |
1748 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1749 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1750 | |
5cf2b69b KH |
1751 | /* This must be called after the above line because it may signal an |
1752 | error. */ | |
1753 | setup_process_coding_systems (process); | |
1754 | ||
ececcbec | 1755 | BLOCK_INPUT; |
177c0ea7 | 1756 | |
d0d6b7c5 JB |
1757 | { |
1758 | /* child_setup must clobber environ on systems with true vfork. | |
1759 | Protect it from permanent change. */ | |
1760 | char **save_environ = environ; | |
12d8b6ab | 1761 | volatile Lisp_Object encoded_current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1762 | |
e98d950b | 1763 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1764 | pid = vfork (); |
1765 | if (pid == 0) | |
e98d950b | 1766 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1767 | { |
1768 | int xforkin = forkin; | |
1769 | int xforkout = forkout; | |
1770 | ||
1771 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1772 | but fails to handle all the cases. */ | |
1773 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1774 | sigsetmask (SIGEMPTYMASK); | |
1775 | #endif | |
1776 | ||
1777 | /* Make the pty be the controlling terminal of the process. */ | |
1778 | #ifdef HAVE_PTYS | |
1779 | /* First, disconnect its current controlling terminal. */ | |
1780 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1781 | /* We tried doing setsid only if pty_flag, but it caused |
1782 | process_set_signal to fail on SGI when using a pipe. */ | |
1783 | setsid (); | |
ce4c9c90 | 1784 | /* Make the pty's terminal the controlling terminal. */ |
ce8f5a9a | 1785 | if (pty_flag && xforkin >= 0) |
39e9ebcd | 1786 | { |
39e9ebcd RS |
1787 | #ifdef TIOCSCTTY |
1788 | /* We ignore the return value | |
1789 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1790 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1791 | #endif |
39e9ebcd | 1792 | } |
d0d6b7c5 | 1793 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1794 | #ifdef USG |
000ab717 | 1795 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1796 | afterwards. Otherwise, we lose our controlling tty which |
1797 | is set when we open the pty. */ | |
1798 | setpgrp (); | |
1799 | #endif /* USG */ | |
1800 | #endif /* not HAVE_SETSID */ | |
a7ebc409 | 1801 | #if defined (LDISC1) |
9bcf8ec6 KH |
1802 | if (pty_flag && xforkin >= 0) |
1803 | { | |
1804 | struct termios t; | |
1805 | tcgetattr (xforkin, &t); | |
1806 | t.c_lflag = LDISC1; | |
1807 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1808 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1809 | } |
1810 | #else | |
aafadd9f | 1811 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1812 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1813 | { |
1814 | /* Use new line discipline. */ | |
1815 | int ldisc = NTTYDISC; | |
4458f555 | 1816 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1817 | } |
000ab717 | 1818 | #endif |
9bcf8ec6 | 1819 | #endif |
177c0ea7 | 1820 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1821 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1822 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1823 | if (pty_flag) | |
1824 | { | |
177c0ea7 | 1825 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1826 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1827 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
ce8f5a9a AS |
1828 | if (j >= 0) |
1829 | { | |
1830 | ioctl (j, TIOCNOTTY, 0); | |
1831 | emacs_close (j); | |
1832 | } | |
5a570e37 | 1833 | #ifndef USG |
d0d6b7c5 JB |
1834 | /* In order to get a controlling terminal on some versions |
1835 | of BSD, it is necessary to put the process in pgrp 0 | |
1836 | before it opens the terminal. */ | |
99c1aeca | 1837 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1838 | setpgid (0, 0); |
1839 | #else | |
d0d6b7c5 | 1840 | setpgrp (0, 0); |
3ea1d291 | 1841 | #endif |
d0d6b7c5 JB |
1842 | #endif |
1843 | } | |
1844 | #endif /* TIOCNOTTY */ | |
1845 | ||
e39a993c | 1846 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1847 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1848 | conditional on TIOCSPGRP, |
1849 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1850 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1851 | that system does seem to need this code, even though | |
1852 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1853 | /* Now close the pty (if we had it open) and reopen it. |
1854 | This makes the pty the controlling terminal of the subprocess. */ | |
1855 | if (pty_flag) | |
1856 | { | |
99e3d726 | 1857 | |
68c45bf0 PE |
1858 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1859 | would work? */ | |
d0d6b7c5 | 1860 | if (xforkin >= 0) |
68c45bf0 PE |
1861 | emacs_close (xforkin); |
1862 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1863 | |
4aa54ba8 RS |
1864 | if (xforkin < 0) |
1865 | { | |
68c45bf0 PE |
1866 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
1867 | emacs_write (1, pty_name, strlen (pty_name)); | |
1868 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
1869 | _exit (1); |
1870 | } | |
1871 | ||
d0d6b7c5 | 1872 | } |
e39a993c | 1873 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1874 | |
d0d6b7c5 | 1875 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
1876 | if (pty_flag) |
1877 | { | |
1878 | SETUP_SLAVE_PTY; | |
1879 | } | |
d0d6b7c5 JB |
1880 | #endif /* SETUP_SLAVE_PTY */ |
1881 | #ifdef AIX | |
1882 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
1883 | Now reenable it in the child, so it will die when we want it to. */ | |
1884 | if (pty_flag) | |
1885 | signal (SIGHUP, SIG_DFL); | |
1886 | #endif | |
1887 | #endif /* HAVE_PTYS */ | |
1888 | ||
0dc70c33 KH |
1889 | signal (SIGINT, SIG_DFL); |
1890 | signal (SIGQUIT, SIG_DFL); | |
2f9a22e2 | 1891 | /* GConf causes us to ignore SIGPIPE, make sure it is restored |
c0ad4ea5 AS |
1892 | in the child. */ |
1893 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 KH |
1894 | |
1895 | /* Stop blocking signals in the child. */ | |
123403e4 | 1896 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
5e7e1da2 | 1897 | |
ab01d0a8 RS |
1898 | if (pty_flag) |
1899 | child_setup_tty (xforkout); | |
e98d950b RS |
1900 | #ifdef WINDOWSNT |
1901 | pid = child_setup (xforkin, xforkout, xforkout, | |
12d8b6ab | 1902 | new_argv, 1, encoded_current_dir); |
177c0ea7 | 1903 | #else /* not WINDOWSNT */ |
2c4df143 YM |
1904 | #ifdef FD_CLOEXEC |
1905 | emacs_close (wait_child_setup[0]); | |
1906 | #endif | |
d0d6b7c5 | 1907 | child_setup (xforkin, xforkout, xforkout, |
12d8b6ab | 1908 | new_argv, 1, encoded_current_dir); |
e98d950b | 1909 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1910 | } |
1911 | environ = save_environ; | |
1912 | } | |
1913 | ||
ececcbec RS |
1914 | UNBLOCK_INPUT; |
1915 | ||
4a127b3b | 1916 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 1917 | if (pid < 0) |
6311cf58 RS |
1918 | { |
1919 | if (forkin >= 0) | |
68c45bf0 | 1920 | emacs_close (forkin); |
6311cf58 | 1921 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1922 | emacs_close (forkout); |
6311cf58 | 1923 | } |
4a127b3b KH |
1924 | else |
1925 | { | |
1926 | /* vfork succeeded. */ | |
6bfd98e7 | 1927 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 1928 | |
e98d950b | 1929 | #ifdef WINDOWSNT |
4a127b3b | 1930 | register_child (pid, inchannel); |
e98d950b RS |
1931 | #endif /* WINDOWSNT */ |
1932 | ||
4a127b3b KH |
1933 | /* If the subfork execv fails, and it exits, |
1934 | this close hangs. I don't know why. | |
1935 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
1936 | { |
1937 | struct atimer *timer; | |
e9a9ae03 | 1938 | EMACS_TIME offset = make_emacs_time (1, 0); |
177c0ea7 | 1939 | |
30904ab7 | 1940 | stop_polling (); |
30904ab7 | 1941 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); |
177c0ea7 | 1942 | |
30904ab7 GM |
1943 | if (forkin >= 0) |
1944 | emacs_close (forkin); | |
1945 | ||
1946 | cancel_atimer (timer); | |
1947 | start_polling (); | |
1948 | } | |
177c0ea7 | 1949 | |
4a127b3b | 1950 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1951 | emacs_close (forkout); |
d0d6b7c5 | 1952 | |
875e6b94 | 1953 | #ifdef HAVE_PTYS |
4a127b3b | 1954 | if (pty_flag) |
6a09a33b | 1955 | pset_tty_name (XPROCESS (process), build_string (pty_name)); |
4a127b3b | 1956 | else |
875e6b94 | 1957 | #endif |
6a09a33b | 1958 | pset_tty_name (XPROCESS (process), Qnil); |
2c4df143 YM |
1959 | |
1960 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
1961 | /* Wait for child_setup to complete in case that vfork is | |
1962 | actually defined as fork. The descriptor wait_child_setup[1] | |
1963 | of a pipe is closed at the child side either by close-on-exec | |
1964 | on successful execvp or the _exit call in child_setup. */ | |
1965 | { | |
1966 | char dummy; | |
1967 | ||
1968 | emacs_close (wait_child_setup[1]); | |
1969 | emacs_read (wait_child_setup[0], &dummy, 1); | |
1970 | emacs_close (wait_child_setup[0]); | |
1971 | } | |
1972 | #endif | |
4a127b3b | 1973 | } |
3b9a3dfa | 1974 | |
4a127b3b KH |
1975 | /* Restore the signal state whether vfork succeeded or not. |
1976 | (We will signal an error, below, if it failed.) */ | |
351e611f | 1977 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1978 | /* Restore the parent's signal handlers. */ |
1979 | sigaction (SIGINT, &sigint_action, 0); | |
1980 | sigaction (SIGQUIT, &sigquit_action, 0); | |
c0ad4ea5 | 1981 | sigaction (SIGPIPE, &sigpipe_action, 0); |
0dc70c33 KH |
1982 | #ifdef AIX |
1983 | sigaction (SIGHUP, &sighup_action, 0); | |
1984 | #endif | |
351e611f | 1985 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 | 1986 | /* Stop blocking signals in the parent. */ |
123403e4 | 1987 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
4a127b3b KH |
1988 | |
1989 | /* Now generate the error if vfork failed. */ | |
1990 | if (pid < 0) | |
1991 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 1992 | } |
d0d6b7c5 | 1993 | |
850d0752 | 1994 | void |
d3da34e0 | 1995 | create_pty (Lisp_Object process) |
850d0752 NR |
1996 | { |
1997 | int inchannel, outchannel; | |
afd4052b | 1998 | int pty_flag = 0; |
850d0752 NR |
1999 | |
2000 | inchannel = outchannel = -1; | |
2001 | ||
2002 | #ifdef HAVE_PTYS | |
2003 | if (!NILP (Vprocess_connection_type)) | |
2004 | outchannel = inchannel = allocate_pty (); | |
2005 | ||
2006 | if (inchannel >= 0) | |
2007 | { | |
2008 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
2009 | /* On most USG systems it does not work to open the pty's tty here, | |
2010 | then close it and reopen it in the child. */ | |
2011 | #ifdef O_NOCTTY | |
2012 | /* Don't let this terminal become our controlling terminal | |
2013 | (in case we don't have one). */ | |
afd4052b | 2014 | int forkout = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
850d0752 | 2015 | #else |
afd4052b | 2016 | int forkout = emacs_open (pty_name, O_RDWR, 0); |
850d0752 | 2017 | #endif |
aba7731a | 2018 | if (forkout < 0) |
850d0752 | 2019 | report_file_error ("Opening pty", Qnil); |
019d2c4c | 2020 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
2021 | /* In the case that vfork is defined as fork, the parent process |
2022 | (Emacs) may send some data before the child process completes | |
2023 | tty options setup. So we setup tty before forking. */ | |
2024 | child_setup_tty (forkout); | |
019d2c4c | 2025 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
2026 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
2027 | pty_flag = 1; | |
2028 | } | |
2029 | #endif /* HAVE_PTYS */ | |
2030 | ||
2031 | #ifdef O_NONBLOCK | |
2032 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
2033 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
2034 | #else | |
2035 | #ifdef O_NDELAY | |
2036 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
2037 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
2038 | #endif | |
2039 | #endif | |
2040 | ||
2041 | /* Record this as an active process, with its channels. | |
2042 | As a result, child_setup will close Emacs's side of the pipes. */ | |
2043 | chan_process[inchannel] = process; | |
2044 | XPROCESS (process)->infd = inchannel; | |
2045 | XPROCESS (process)->outfd = outchannel; | |
2046 | ||
2047 | /* Previously we recorded the tty descriptor used in the subprocess. | |
2048 | It was only used for getting the foreground tty process, so now | |
2049 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
2050 | more portable (see USG_SUBTTY_WORKS above). */ | |
2051 | ||
2052 | XPROCESS (process)->pty_flag = pty_flag; | |
6a09a33b | 2053 | pset_status (XPROCESS (process), Qrun); |
850d0752 NR |
2054 | setup_process_coding_systems (process); |
2055 | ||
2056 | FD_SET (inchannel, &input_wait_mask); | |
2057 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
2058 | if (inchannel > max_process_desc) | |
2059 | max_process_desc = inchannel; | |
2060 | ||
2061 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
2062 | #ifdef HAVE_PTYS |
2063 | if (pty_flag) | |
6a09a33b | 2064 | pset_tty_name (XPROCESS (process), build_string (pty_name)); |
8b9fc636 EZ |
2065 | else |
2066 | #endif | |
6a09a33b | 2067 | pset_tty_name (XPROCESS (process), Qnil); |
850d0752 NR |
2068 | } |
2069 | ||
e690ca94 | 2070 | \f |
e690ca94 KS |
2071 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2072 | The address family of sa is not included in the result. */ | |
2073 | ||
2074 | static Lisp_Object | |
d3da34e0 | 2075 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
2076 | { |
2077 | Lisp_Object address; | |
2078 | int i; | |
2079 | unsigned char *cp; | |
2080 | register struct Lisp_Vector *p; | |
2081 | ||
63136da6 AS |
2082 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2083 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2084 | a zero length name. */ | |
89887d67 | 2085 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2086 | return empty_unibyte_string; |
63136da6 | 2087 | |
e690ca94 KS |
2088 | switch (sa->sa_family) |
2089 | { | |
2090 | case AF_INET: | |
2091 | { | |
2092 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2093 | len = sizeof (sin->sin_addr) + 1; | |
2094 | address = Fmake_vector (make_number (len), Qnil); | |
2095 | p = XVECTOR (address); | |
2096 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2097 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2098 | break; |
2099 | } | |
e1652a86 KS |
2100 | #ifdef AF_INET6 |
2101 | case AF_INET6: | |
2102 | { | |
2103 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2104 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2105 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2106 | address = Fmake_vector (make_number (len), Qnil); | |
2107 | p = XVECTOR (address); | |
2108 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2109 | for (i = 0; i < len; i++) | |
2110 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2111 | return address; | |
2112 | } | |
2113 | #endif | |
e690ca94 KS |
2114 | #ifdef HAVE_LOCAL_SOCKETS |
2115 | case AF_LOCAL: | |
2116 | { | |
fb23673a EZ |
2117 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2118 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2119 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2120 | break; |
fb23673a | 2121 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2122 | } |
2123 | #endif | |
2124 | default: | |
89887d67 | 2125 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2126 | address = Fcons (make_number (sa->sa_family), |
2127 | Fmake_vector (make_number (len), Qnil)); | |
2128 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2129 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2130 | break; |
2131 | } | |
2132 | ||
2133 | i = 0; | |
2134 | while (i < len) | |
2135 | p->contents[i++] = make_number (*cp++); | |
2136 | ||
2137 | return address; | |
2138 | } | |
2139 | ||
2140 | ||
2141 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2142 | ||
2143 | static int | |
d3da34e0 | 2144 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2145 | { |
2146 | register struct Lisp_Vector *p; | |
2147 | ||
2148 | if (VECTORP (address)) | |
2149 | { | |
2150 | p = XVECTOR (address); | |
eab3844f | 2151 | if (p->header.size == 5) |
e690ca94 KS |
2152 | { |
2153 | *familyp = AF_INET; | |
2154 | return sizeof (struct sockaddr_in); | |
2155 | } | |
e1652a86 | 2156 | #ifdef AF_INET6 |
eab3844f | 2157 | else if (p->header.size == 9) |
e1652a86 KS |
2158 | { |
2159 | *familyp = AF_INET6; | |
2160 | return sizeof (struct sockaddr_in6); | |
2161 | } | |
2162 | #endif | |
e690ca94 KS |
2163 | } |
2164 | #ifdef HAVE_LOCAL_SOCKETS | |
2165 | else if (STRINGP (address)) | |
2166 | { | |
2167 | *familyp = AF_LOCAL; | |
2168 | return sizeof (struct sockaddr_un); | |
2169 | } | |
2170 | #endif | |
d311d28c PE |
2171 | else if (CONSP (address) && TYPE_RANGED_INTEGERP (int, XCAR (address)) |
2172 | && VECTORP (XCDR (address))) | |
e690ca94 KS |
2173 | { |
2174 | struct sockaddr *sa; | |
2175 | *familyp = XINT (XCAR (address)); | |
2176 | p = XVECTOR (XCDR (address)); | |
eab3844f | 2177 | return p->header.size + sizeof (sa->sa_family); |
e690ca94 KS |
2178 | } |
2179 | return 0; | |
2180 | } | |
2181 | ||
2182 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2183 | |
2184 | The address format has been basically validated by | |
2185 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2186 | it could have come from user data. So if FAMILY is not valid, | |
2187 | we return after zeroing *SA. */ | |
e690ca94 KS |
2188 | |
2189 | static void | |
d3da34e0 | 2190 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2191 | { |
2192 | register struct Lisp_Vector *p; | |
34967d0f | 2193 | register unsigned char *cp = NULL; |
e690ca94 | 2194 | register int i; |
d311d28c | 2195 | EMACS_INT hostport; |
e690ca94 | 2196 | |
72af86bd | 2197 | memset (sa, 0, len); |
e690ca94 KS |
2198 | |
2199 | if (VECTORP (address)) | |
2200 | { | |
2201 | p = XVECTOR (address); | |
2202 | if (family == AF_INET) | |
2203 | { | |
2204 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2205 | len = sizeof (sin->sin_addr) + 1; | |
d311d28c PE |
2206 | hostport = XINT (p->contents[--len]); |
2207 | sin->sin_port = htons (hostport); | |
e690ca94 | 2208 | cp = (unsigned char *)&sin->sin_addr; |
9d1a8e5d | 2209 | sa->sa_family = family; |
e690ca94 | 2210 | } |
e1652a86 KS |
2211 | #ifdef AF_INET6 |
2212 | else if (family == AF_INET6) | |
2213 | { | |
2214 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2215 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2216 | len = sizeof (sin6->sin6_addr) + 1; | |
d311d28c PE |
2217 | hostport = XINT (p->contents[--len]); |
2218 | sin6->sin6_port = htons (hostport); | |
e1652a86 KS |
2219 | for (i = 0; i < len; i++) |
2220 | if (INTEGERP (p->contents[i])) | |
2221 | { | |
2222 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2223 | ip6[i] = ntohs (j); | |
2224 | } | |
9d1a8e5d | 2225 | sa->sa_family = family; |
0eb7675e | 2226 | return; |
e1652a86 KS |
2227 | } |
2228 | #endif | |
0eb7675e AS |
2229 | else |
2230 | return; | |
e690ca94 KS |
2231 | } |
2232 | else if (STRINGP (address)) | |
2233 | { | |
2234 | #ifdef HAVE_LOCAL_SOCKETS | |
2235 | if (family == AF_LOCAL) | |
2236 | { | |
fb23673a | 2237 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2238 | cp = SDATA (address); |
fb23673a EZ |
2239 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2240 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2241 | sa->sa_family = family; |
e690ca94 KS |
2242 | } |
2243 | #endif | |
2244 | return; | |
2245 | } | |
2246 | else | |
2247 | { | |
2248 | p = XVECTOR (XCDR (address)); | |
2249 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2250 | } | |
2251 | ||
2252 | for (i = 0; i < len; i++) | |
2253 | if (INTEGERP (p->contents[i])) | |
2254 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2255 | } | |
2256 | ||
2257 | #ifdef DATAGRAM_SOCKETS | |
2258 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2259 | 1, 1, 0, | |
2260 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2261 | (Lisp_Object process) |
e690ca94 KS |
2262 | { |
2263 | int channel; | |
2264 | ||
2265 | CHECK_PROCESS (process); | |
2266 | ||
2267 | if (!DATAGRAM_CONN_P (process)) | |
2268 | return Qnil; | |
2269 | ||
60f0fb11 | 2270 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2271 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2272 | datagram_address[channel].len); | |
2273 | } | |
2274 | ||
2275 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2276 | 2, 2, 0, | |
2277 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2278 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2279 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2280 | { |
2281 | int channel; | |
2282 | int family, len; | |
2283 | ||
2284 | CHECK_PROCESS (process); | |
2285 | ||
2286 | if (!DATAGRAM_CONN_P (process)) | |
2287 | return Qnil; | |
2288 | ||
60f0fb11 | 2289 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2290 | |
2291 | len = get_lisp_to_sockaddr_size (address, &family); | |
2292 | if (datagram_address[channel].len != len) | |
2293 | return Qnil; | |
2294 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2295 | return address; | |
2296 | } | |
2297 | #endif | |
2298 | \f | |
2299 | ||
5e2327cf | 2300 | static const struct socket_options { |
e690ca94 | 2301 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2302 | name without SO_ prefix. */ |
fce70521 | 2303 | const char *name; |
e690ca94 KS |
2304 | /* Option level SOL_... */ |
2305 | int optlevel; | |
2306 | /* Option number SO_... */ | |
2307 | int optnum; | |
6b61353c KH |
2308 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2309 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2310 | } socket_options[] = |
2311 | { | |
2312 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2313 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2314 | #endif |
2315 | #ifdef SO_BROADCAST | |
6b61353c | 2316 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2317 | #endif |
2318 | #ifdef SO_DONTROUTE | |
6b61353c | 2319 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2320 | #endif |
2321 | #ifdef SO_KEEPALIVE | |
6b61353c | 2322 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2323 | #endif |
2324 | #ifdef SO_LINGER | |
6b61353c | 2325 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2326 | #endif |
2327 | #ifdef SO_OOBINLINE | |
6b61353c | 2328 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2329 | #endif |
2330 | #ifdef SO_PRIORITY | |
6b61353c | 2331 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2332 | #endif |
2333 | #ifdef SO_REUSEADDR | |
6b61353c | 2334 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2335 | #endif |
6b61353c | 2336 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2337 | }; |
2338 | ||
6b61353c | 2339 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2340 | |
6b61353c KH |
2341 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2342 | Signals an error if setting a known option fails. | |
2343 | */ | |
e690ca94 KS |
2344 | |
2345 | static int | |
d3da34e0 | 2346 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2347 | { |
6b61353c | 2348 | char *name; |
5e2327cf | 2349 | const struct socket_options *sopt; |
6b61353c | 2350 | int ret = 0; |
e690ca94 | 2351 | |
6b61353c | 2352 | CHECK_SYMBOL (opt); |
e690ca94 | 2353 | |
51b59d79 | 2354 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2355 | for (sopt = socket_options; sopt->name; sopt++) |
2356 | if (strcmp (name, sopt->name) == 0) | |
2357 | break; | |
e690ca94 | 2358 | |
6b61353c KH |
2359 | switch (sopt->opttype) |
2360 | { | |
2361 | case SOPT_BOOL: | |
2362 | { | |
2363 | int optval; | |
2364 | optval = NILP (val) ? 0 : 1; | |
2365 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2366 | &optval, sizeof (optval)); | |
2367 | break; | |
2368 | } | |
e690ca94 | 2369 | |
6b61353c KH |
2370 | case SOPT_INT: |
2371 | { | |
2372 | int optval; | |
d311d28c | 2373 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2374 | optval = XINT (val); |
2375 | else | |
2376 | error ("Bad option value for %s", name); | |
2377 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2378 | &optval, sizeof (optval)); | |
2379 | break; | |
2380 | } | |
e690ca94 | 2381 | |
6b61353c KH |
2382 | #ifdef SO_BINDTODEVICE |
2383 | case SOPT_IFNAME: | |
2384 | { | |
2385 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2386 | |
6b61353c KH |
2387 | /* This is broken, at least in the Linux 2.4 kernel. |
2388 | To unbind, the arg must be a zero integer, not the empty string. | |
2389 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2390 | memset (devname, 0, sizeof devname); |
6b61353c | 2391 | if (STRINGP (val)) |
e690ca94 | 2392 | { |
51b59d79 | 2393 | char *arg = SSDATA (val); |
6b61353c | 2394 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2395 | memcpy (devname, arg, len); |
e690ca94 | 2396 | } |
6b61353c KH |
2397 | else if (!NILP (val)) |
2398 | error ("Bad option value for %s", name); | |
2399 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2400 | devname, IFNAMSIZ); | |
2401 | break; | |
2402 | } | |
2403 | #endif | |
e690ca94 | 2404 | |
177c0ea7 | 2405 | #ifdef SO_LINGER |
6b61353c KH |
2406 | case SOPT_LINGER: |
2407 | { | |
2408 | struct linger linger; | |
e690ca94 | 2409 | |
6b61353c KH |
2410 | linger.l_onoff = 1; |
2411 | linger.l_linger = 0; | |
d311d28c | 2412 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2413 | linger.l_linger = XINT (val); |
2414 | else | |
2415 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2416 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2417 | &linger, sizeof (linger)); | |
2418 | break; | |
2419 | } | |
e690ca94 | 2420 | #endif |
6b61353c KH |
2421 | |
2422 | default: | |
2423 | return 0; | |
e690ca94 | 2424 | } |
6b61353c KH |
2425 | |
2426 | if (ret < 0) | |
2427 | report_file_error ("Cannot set network option", | |
2428 | Fcons (opt, Fcons (val, Qnil))); | |
2429 | return (1 << sopt->optbit); | |
e690ca94 KS |
2430 | } |
2431 | ||
6b61353c KH |
2432 | |
2433 | DEFUN ("set-network-process-option", | |
2434 | Fset_network_process_option, Sset_network_process_option, | |
2435 | 3, 4, 0, | |
2436 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2437 | See `make-network-process' for a list of options and values. | |
2438 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2439 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2440 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2441 | { |
6b61353c KH |
2442 | int s; |
2443 | struct Lisp_Process *p; | |
e690ca94 | 2444 | |
e690ca94 | 2445 | CHECK_PROCESS (process); |
6b61353c KH |
2446 | p = XPROCESS (process); |
2447 | if (!NETCONN1_P (p)) | |
2448 | error ("Process is not a network process"); | |
2449 | ||
60f0fb11 | 2450 | s = p->infd; |
6b61353c KH |
2451 | if (s < 0) |
2452 | error ("Process is not running"); | |
2453 | ||
2454 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2455 | { |
6a09a33b | 2456 | pset_childp (p, Fplist_put (p->childp, option, value)); |
6b61353c | 2457 | return Qt; |
e690ca94 | 2458 | } |
6b61353c KH |
2459 | |
2460 | if (NILP (no_error)) | |
2461 | error ("Unknown or unsupported option"); | |
2462 | ||
2463 | return Qnil; | |
e690ca94 | 2464 | } |
6b61353c | 2465 | |
e690ca94 | 2466 | \f |
d888760c GM |
2467 | DEFUN ("serial-process-configure", |
2468 | Fserial_process_configure, | |
2469 | Sserial_process_configure, | |
2470 | 0, MANY, 0, | |
2471 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2472 | ||
2473 | Arguments are specified as keyword/argument pairs. Attributes that | |
2474 | are not given are re-initialized from the process's current | |
2475 | configuration (available via the function `process-contact') or set to | |
2476 | reasonable default values. The following arguments are defined: | |
2477 | ||
2478 | :process PROCESS | |
2479 | :name NAME | |
2480 | :buffer BUFFER | |
2481 | :port PORT | |
2482 | -- Any of these arguments can be given to identify the process that is | |
2483 | to be configured. If none of these arguments is given, the current | |
2484 | buffer's process is used. | |
2485 | ||
2486 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2487 | second, also called baud rate. Any value can be given for SPEED, but | |
2488 | most serial ports work only at a few defined values between 1200 and | |
2489 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2490 | serial port is not configured any further, i.e., all other arguments | |
2491 | are ignored. This may be useful for special serial ports such as | |
2492 | Bluetooth-to-serial converters which can only be configured through AT | |
2493 | commands. A value of nil for SPEED can be used only when passed | |
2494 | through `make-serial-process' or `serial-term'. | |
2495 | ||
2496 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2497 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2498 | ||
2499 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2500 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2501 | PARITY is not given, no parity is used. | |
2502 | ||
2503 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2504 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2505 | is not given or nil, 1 stopbit is used. | |
2506 | ||
2507 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2508 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2509 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2510 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2511 | flowcontrol is used. | |
2512 | ||
2513 | `serial-process-configure' is called by `make-serial-process' for the | |
2514 | initial configuration of the serial port. | |
2515 | ||
2516 | Examples: | |
2517 | ||
2518 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2519 | ||
2520 | \(serial-process-configure | |
2521 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2522 | ||
2523 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2524 | ||
2525 | usage: (serial-process-configure &rest ARGS) */) | |
f66c7cf8 | 2526 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2527 | { |
2528 | struct Lisp_Process *p; | |
2529 | Lisp_Object contact = Qnil; | |
2530 | Lisp_Object proc = Qnil; | |
2531 | struct gcpro gcpro1; | |
2532 | ||
2533 | contact = Flist (nargs, args); | |
2534 | GCPRO1 (contact); | |
2535 | ||
2536 | proc = Fplist_get (contact, QCprocess); | |
2537 | if (NILP (proc)) | |
2538 | proc = Fplist_get (contact, QCname); | |
2539 | if (NILP (proc)) | |
2540 | proc = Fplist_get (contact, QCbuffer); | |
2541 | if (NILP (proc)) | |
2542 | proc = Fplist_get (contact, QCport); | |
2543 | proc = get_process (proc); | |
2544 | p = XPROCESS (proc); | |
4d2b044c | 2545 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2546 | error ("Not a serial process"); |
2547 | ||
4d2b044c | 2548 | if (NILP (Fplist_get (p->childp, QCspeed))) |
d888760c GM |
2549 | { |
2550 | UNGCPRO; | |
2551 | return Qnil; | |
2552 | } | |
2553 | ||
2554 | serial_configure (p, contact); | |
2555 | ||
2556 | UNGCPRO; | |
2557 | return Qnil; | |
2558 | } | |
d888760c | 2559 | |
d888760c | 2560 | /* Used by make-serial-process to recover from errors. */ |
b766f867 PE |
2561 | static Lisp_Object |
2562 | make_serial_process_unwind (Lisp_Object proc) | |
d888760c GM |
2563 | { |
2564 | if (!PROCESSP (proc)) | |
2565 | abort (); | |
2566 | remove_process (proc); | |
2567 | return Qnil; | |
2568 | } | |
d888760c | 2569 | |
d888760c GM |
2570 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2571 | 0, MANY, 0, | |
2572 | doc: /* Create and return a serial port process. | |
2573 | ||
2574 | In Emacs, serial port connections are represented by process objects, | |
2575 | so input and output work as for subprocesses, and `delete-process' | |
2576 | closes a serial port connection. However, a serial process has no | |
2577 | process id, it cannot be signaled, and the status codes are different | |
2578 | from normal processes. | |
2579 | ||
2580 | `make-serial-process' creates a process and a buffer, on which you | |
2581 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2582 | an interactive terminal. See below for examples. | |
2583 | ||
2584 | Arguments are specified as keyword/argument pairs. The following | |
2585 | arguments are defined: | |
2586 | ||
2587 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2588 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2589 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2590 | the backslashes in strings). | |
2591 | ||
2592 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
4373fd43 | 2593 | which this function calls. |
d888760c GM |
2594 | |
2595 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2596 | the value of PORT is used. | |
2597 | ||
2598 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2599 | with the process. Process output goes at the end of that buffer, | |
2600 | unless you specify an output stream or filter function to handle the | |
2601 | output. If BUFFER is not given, the value of NAME is used. | |
2602 | ||
2603 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2604 | system used for both reading and writing for this process. If CODING | |
2605 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2606 | ENCODING is used for writing. | |
2607 | ||
2608 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2609 | the process is running. If BOOL is not given, query before exiting. | |
2610 | ||
2611 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2612 | In the stopped state, a serial process does not accept incoming data, | |
2613 | but you can send outgoing data. The stopped state is cleared by | |
2614 | `continue-process' and set by `stop-process'. | |
2615 | ||
2616 | :filter FILTER -- Install FILTER as the process filter. | |
2617 | ||
2618 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2619 | ||
2620 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2621 | ||
d888760c GM |
2622 | :bytesize |
2623 | :parity | |
2624 | :stopbits | |
2625 | :flowcontrol | |
4373fd43 GM |
2626 | -- This function calls `serial-process-configure' to handle these |
2627 | arguments. | |
d888760c GM |
2628 | |
2629 | The original argument list, possibly modified by later configuration, | |
2630 | is available via the function `process-contact'. | |
2631 | ||
2632 | Examples: | |
2633 | ||
2634 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2635 | ||
2636 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2637 | ||
2638 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2639 | ||
2640 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2641 | ||
2642 | usage: (make-serial-process &rest ARGS) */) | |
f66c7cf8 | 2643 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2644 | { |
2645 | int fd = -1; | |
2646 | Lisp_Object proc, contact, port; | |
2647 | struct Lisp_Process *p; | |
2648 | struct gcpro gcpro1; | |
2649 | Lisp_Object name, buffer; | |
2650 | Lisp_Object tem, val; | |
d311d28c | 2651 | ptrdiff_t specpdl_count = -1; |
d888760c GM |
2652 | |
2653 | if (nargs == 0) | |
2654 | return Qnil; | |
2655 | ||
2656 | contact = Flist (nargs, args); | |
2657 | GCPRO1 (contact); | |
2658 | ||
2659 | port = Fplist_get (contact, QCport); | |
2660 | if (NILP (port)) | |
2661 | error ("No port specified"); | |
2662 | CHECK_STRING (port); | |
2663 | ||
2664 | if (NILP (Fplist_member (contact, QCspeed))) | |
2665 | error (":speed not specified"); | |
2666 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2667 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2668 | ||
2669 | name = Fplist_get (contact, QCname); | |
2670 | if (NILP (name)) | |
2671 | name = port; | |
2672 | CHECK_STRING (name); | |
2673 | proc = make_process (name); | |
2674 | specpdl_count = SPECPDL_INDEX (); | |
2675 | record_unwind_protect (make_serial_process_unwind, proc); | |
2676 | p = XPROCESS (proc); | |
2677 | ||
51b59d79 | 2678 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2679 | p->infd = fd; |
2680 | p->outfd = fd; | |
2681 | if (fd > max_process_desc) | |
2682 | max_process_desc = fd; | |
2683 | chan_process[fd] = proc; | |
2684 | ||
2685 | buffer = Fplist_get (contact, QCbuffer); | |
2686 | if (NILP (buffer)) | |
2687 | buffer = name; | |
2688 | buffer = Fget_buffer_create (buffer); | |
6a09a33b PE |
2689 | pset_buffer (p, buffer); |
2690 | ||
2691 | pset_childp (p, contact); | |
2692 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
2693 | pset_type (p, Qserial); | |
2694 | pset_sentinel (p, Fplist_get (contact, QCsentinel)); | |
2695 | pset_filter (p, Fplist_get (contact, QCfilter)); | |
2696 | pset_log (p, Qnil); | |
d888760c GM |
2697 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
2698 | p->kill_without_query = 1; | |
2699 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
6a09a33b | 2700 | pset_command (p, Qt); |
d888760c GM |
2701 | p->pty_flag = 0; |
2702 | ||
4d2b044c | 2703 | if (!EQ (p->command, Qt)) |
d888760c GM |
2704 | { |
2705 | FD_SET (fd, &input_wait_mask); | |
2706 | FD_SET (fd, &non_keyboard_wait_mask); | |
2707 | } | |
2708 | ||
2709 | if (BUFFERP (buffer)) | |
2710 | { | |
4d2b044c | 2711 | set_marker_both (p->mark, buffer, |
d888760c GM |
2712 | BUF_ZV (XBUFFER (buffer)), |
2713 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2714 | } | |
2715 | ||
2716 | tem = Fplist_member (contact, QCcoding); | |
2717 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2718 | tem = Qnil; | |
2719 | ||
2720 | val = Qnil; | |
2721 | if (!NILP (tem)) | |
2722 | { | |
2723 | val = XCAR (XCDR (tem)); | |
2724 | if (CONSP (val)) | |
2725 | val = XCAR (val); | |
2726 | } | |
2727 | else if (!NILP (Vcoding_system_for_read)) | |
2728 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2729 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2730 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2731 | val = Qnil; |
6a09a33b | 2732 | pset_decode_coding_system (p, val); |
d888760c GM |
2733 | |
2734 | val = Qnil; | |
2735 | if (!NILP (tem)) | |
2736 | { | |
2737 | val = XCAR (XCDR (tem)); | |
2738 | if (CONSP (val)) | |
2739 | val = XCDR (val); | |
2740 | } | |
2741 | else if (!NILP (Vcoding_system_for_write)) | |
2742 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2743 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2744 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c | 2745 | val = Qnil; |
6a09a33b | 2746 | pset_encode_coding_system (p, val); |
d888760c GM |
2747 | |
2748 | setup_process_coding_systems (proc); | |
6a09a33b | 2749 | pset_decoding_buf (p, empty_unibyte_string); |
d888760c | 2750 | p->decoding_carryover = 0; |
6a09a33b | 2751 | pset_encoding_buf (p, empty_unibyte_string); |
d888760c GM |
2752 | p->inherit_coding_system_flag |
2753 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2754 | ||
ed3751c8 | 2755 | Fserial_process_configure (nargs, args); |
d888760c GM |
2756 | |
2757 | specpdl_ptr = specpdl + specpdl_count; | |
2758 | ||
2759 | UNGCPRO; | |
2760 | return proc; | |
2761 | } | |
d888760c | 2762 | |
e690ca94 KS |
2763 | /* Create a network stream/datagram client/server process. Treated |
2764 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2765 | differences are in status display and process deletion. A network |
2766 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2767 | stop/continue it and deactivate/close it via delete-process */ |
2768 | ||
177c0ea7 JB |
2769 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2770 | 0, MANY, 0, | |
e690ca94 KS |
2771 | doc: /* Create and return a network server or client process. |
2772 | ||
fa9d4315 | 2773 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2774 | input and output work as for subprocesses and `delete-process' closes |
2775 | a network connection. However, a network process has no process id, | |
d22426e1 | 2776 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2777 | processes. |
2778 | ||
2779 | Arguments are specified as keyword/argument pairs. The following | |
2780 | arguments are defined: | |
2781 | ||
2782 | :name NAME -- NAME is name for process. It is modified if necessary | |
2783 | to make it unique. | |
2784 | ||
2785 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2786 | with the process. Process output goes at end of that buffer, unless | |
2787 | you specify an output stream or filter function to handle the output. | |
2788 | BUFFER may be also nil, meaning that this process is not associated | |
2789 | with any buffer. | |
2790 | ||
2791 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2792 | address. The symbol `local' specifies the local host. If specified | |
2793 | for a server process, it must be a valid name or address for the local | |
2794 | host, and only clients connecting to that address will be accepted. | |
2795 | ||
2796 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2797 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2798 | a random port number is selected for the server. (If Emacs was |
2799 | compiled with getaddrinfo, a port number can also be specified as a | |
2800 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2801 | |
9057ff80 | 2802 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2803 | stream type connection, `datagram' creates a datagram type connection, |
2804 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2805 | |
e690ca94 | 2806 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2807 | service specified by HOST and SERVICE. The default (nil) is to use |
2808 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2809 | and port number specified by HOST and SERVICE. Other address families | |
2810 | supported are: | |
e690ca94 | 2811 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2812 | ipv4 -- use IPv4 address family only. |
2813 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2814 | |
2815 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2816 | This parameter is ignored when opening a client process. When specified | |
2817 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2818 | ||
2819 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2820 | connection. This parameter is ignored when opening a stream server | |
2821 | process. For a datagram server process, it specifies the initial | |
2822 | setting of the remote datagram address. When specified for a client | |
2823 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2824 | ||
2825 | The format of ADDRESS depends on the address family: | |
2826 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2827 | corresponding to numeric IP address A.B.C.D and port number P. | |
2828 | - A local address is represented as a string with the address in the | |
2829 | local address space. | |
2830 | - An "unsupported family" address is represented by a cons (F . AV) | |
2831 | where F is the family number and AV is a vector containing the socket | |
2832 | address data with one element per address data byte. Do not rely on | |
2833 | this format in portable code, as it may depend on implementation | |
2834 | defined constants, data sizes, and data structure alignment. | |
2835 | ||
6b61353c KH |
2836 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2837 | system used for both reading and writing for this process. If CODING | |
2838 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2839 | ENCODING is used for writing. | |
e690ca94 KS |
2840 | |
2841 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2842 | return without waiting for the connection to complete; instead, the | |
2843 | sentinel function will be called with second arg matching "open" (if | |
2844 | successful) or "failed" when the connect completes. Default is to use | |
2845 | a blocking connect (i.e. wait) for stream type connections. | |
2846 | ||
2847 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2848 | running when Emacs is exited. |
e690ca94 KS |
2849 | |
2850 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2851 | In the stopped state, a server process does not accept new | |
2852 | connections, and a client process does not handle incoming traffic. | |
2853 | The stopped state is cleared by `continue-process' and set by | |
2854 | `stop-process'. | |
2855 | ||
2856 | :filter FILTER -- Install FILTER as the process filter. | |
2857 | ||
7392e23c KS |
2858 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2859 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2860 | If this keyword is not specified, the strings are multibyte if |
016a35df | 2861 | the default value of `enable-multibyte-characters' is non-nil. |
03f04413 | 2862 | |
e690ca94 KS |
2863 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2864 | ||
2865 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2866 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2867 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2868 | is the server process, CLIENT is the new process for the connection, | |
2869 | and MESSAGE is a string. | |
2870 | ||
faa7db08 | 2871 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2872 | |
6b61353c | 2873 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2874 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2875 | If QLEN is an integer, it is used as the max. length of the server's |
2876 | pending connection queue (also known as the backlog); the default | |
2877 | queue length is 5. Default is to create a client process. | |
2878 | ||
2879 | The following network options can be specified for this connection: | |
2880 | ||
2881 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2882 | :dontroute BOOL -- Only send to directly connected hosts. | |
2883 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2884 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2885 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2886 | :priority INT -- Set protocol defined priority for sent packets. | |
2887 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2888 | (this is allowed by default for a server process). | |
2889 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2890 | special privileges on some systems. | |
2891 | ||
2892 | Consult the relevant system programmer's manual pages for more | |
2893 | information on using these options. | |
2894 | ||
2895 | ||
2896 | A server process will listen for and accept connections from clients. | |
2897 | When a client connection is accepted, a new network process is created | |
2898 | for the connection with the following parameters: | |
e690ca94 | 2899 | |
e690ca94 KS |
2900 | - The client's process name is constructed by concatenating the server |
2901 | process' NAME and a client identification string. | |
2902 | - If the FILTER argument is non-nil, the client process will not get a | |
2903 | separate process buffer; otherwise, the client's process buffer is a newly | |
2904 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2905 | NAME concatenated with the client identification string. |
e690ca94 KS |
2906 | - The connection type and the process filter and sentinel parameters are |
2907 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2908 | - The client process' contact info is set according to the client's | |
2909 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2910 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2911 | |
2912 | Notice that the FILTER and SENTINEL args are never used directly by | |
2913 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2914 | the server process, but via the optional :log function, accepted (and |
2915 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2916 | |
365aee82 KS |
2917 | The original argument list, modified with the actual connection |
2918 | information, is available via the `process-contact' function. | |
365aee82 | 2919 | |
fa9d4315 | 2920 | usage: (make-network-process &rest ARGS) */) |
f66c7cf8 | 2921 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 JB |
2922 | { |
2923 | Lisp_Object proc; | |
e690ca94 KS |
2924 | Lisp_Object contact; |
2925 | struct Lisp_Process *p; | |
70dbdb36 | 2926 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2927 | struct addrinfo ai, *res, *lres; |
e1652a86 | 2928 | struct addrinfo hints; |
8ea90aa3 DN |
2929 | const char *portstring; |
2930 | char portbuf[128]; | |
70dbdb36 | 2931 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2932 | struct _emacs_addrinfo |
2933 | { | |
2934 | int ai_family; | |
2935 | int ai_socktype; | |
2936 | int ai_protocol; | |
2937 | int ai_addrlen; | |
2938 | struct sockaddr *ai_addr; | |
2939 | struct _emacs_addrinfo *ai_next; | |
2940 | } ai, *res, *lres; | |
418b48fd | 2941 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2942 | struct sockaddr_in address_in; |
2943 | #ifdef HAVE_LOCAL_SOCKETS | |
2944 | struct sockaddr_un address_un; | |
2945 | #endif | |
2946 | int port; | |
dd2a17ab KS |
2947 | int ret = 0; |
2948 | int xerrno = 0; | |
418b48fd | 2949 | int s = -1, outch, inch; |
e690ca94 | 2950 | struct gcpro gcpro1; |
d311d28c PE |
2951 | ptrdiff_t count = SPECPDL_INDEX (); |
2952 | ptrdiff_t count1; | |
e690ca94 KS |
2953 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2954 | Lisp_Object tem; | |
2955 | Lisp_Object name, buffer, host, service, address; | |
2956 | Lisp_Object filter, sentinel; | |
2957 | int is_non_blocking_client = 0; | |
6b61353c | 2958 | int is_server = 0, backlog = 5; |
9057ff80 | 2959 | int socktype; |
e690ca94 KS |
2960 | int family = -1; |
2961 | ||
2962 | if (nargs == 0) | |
2963 | return Qnil; | |
dd2a17ab | 2964 | |
e690ca94 KS |
2965 | /* Save arguments for process-contact and clone-process. */ |
2966 | contact = Flist (nargs, args); | |
2967 | GCPRO1 (contact); | |
2968 | ||
bff3ed0a RS |
2969 | #ifdef WINDOWSNT |
2970 | /* Ensure socket support is loaded if available. */ | |
2971 | init_winsock (TRUE); | |
2972 | #endif | |
2973 | ||
9057ff80 KS |
2974 | /* :type TYPE (nil: stream, datagram */ |
2975 | tem = Fplist_get (contact, QCtype); | |
2976 | if (NILP (tem)) | |
2977 | socktype = SOCK_STREAM; | |
2978 | #ifdef DATAGRAM_SOCKETS | |
2979 | else if (EQ (tem, Qdatagram)) | |
2980 | socktype = SOCK_DGRAM; | |
f00c449b SM |
2981 | #endif |
2982 | #ifdef HAVE_SEQPACKET | |
2983 | else if (EQ (tem, Qseqpacket)) | |
2984 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 2985 | #endif |
9057ff80 KS |
2986 | else |
2987 | error ("Unsupported connection type"); | |
e690ca94 KS |
2988 | |
2989 | /* :server BOOL */ | |
2990 | tem = Fplist_get (contact, QCserver); | |
2991 | if (!NILP (tem)) | |
2992 | { | |
75728599 JR |
2993 | /* Don't support network sockets when non-blocking mode is |
2994 | not available, since a blocked Emacs is not useful. */ | |
5e617bc2 | 2995 | #if !defined (O_NONBLOCK) && !defined (O_NDELAY) |
e690ca94 KS |
2996 | error ("Network servers not supported"); |
2997 | #else | |
2998 | is_server = 1; | |
d311d28c | 2999 | if (TYPE_RANGED_INTEGERP (int, tem)) |
6b61353c | 3000 | backlog = XINT (tem); |
e690ca94 KS |
3001 | #endif |
3002 | } | |
3003 | ||
3004 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
3005 | QCaddress = is_server ? QClocal : QCremote; | |
3006 | ||
d7e344cd | 3007 | /* :nowait BOOL */ |
84b31826 | 3008 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
3009 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
3010 | { | |
3011 | #ifndef NON_BLOCKING_CONNECT | |
3012 | error ("Non-blocking connect not supported"); | |
3013 | #else | |
3014 | is_non_blocking_client = 1; | |
3015 | #endif | |
3016 | } | |
3017 | ||
3018 | name = Fplist_get (contact, QCname); | |
3019 | buffer = Fplist_get (contact, QCbuffer); | |
3020 | filter = Fplist_get (contact, QCfilter); | |
3021 | sentinel = Fplist_get (contact, QCsentinel); | |
3022 | ||
b7826503 | 3023 | CHECK_STRING (name); |
e690ca94 | 3024 | |
e690ca94 KS |
3025 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
3026 | ai.ai_socktype = socktype; | |
3027 | ai.ai_protocol = 0; | |
3028 | ai.ai_next = NULL; | |
3029 | res = &ai; | |
a319f7c1 | 3030 | |
e690ca94 KS |
3031 | /* :local ADDRESS or :remote ADDRESS */ |
3032 | address = Fplist_get (contact, QCaddress); | |
3033 | if (!NILP (address)) | |
a319f7c1 | 3034 | { |
e690ca94 KS |
3035 | host = service = Qnil; |
3036 | ||
3037 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
3038 | error ("Malformed :address"); | |
3039 | ai.ai_family = family; | |
3040 | ai.ai_addr = alloca (ai.ai_addrlen); | |
3041 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
3042 | goto open_socket; | |
a319f7c1 | 3043 | } |
e690ca94 KS |
3044 | |
3045 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
3046 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 3047 | if (NILP (tem)) |
a319f7c1 | 3048 | { |
5e617bc2 | 3049 | #if defined (HAVE_GETADDRINFO) && defined (AF_INET6) |
e1652a86 KS |
3050 | family = AF_UNSPEC; |
3051 | #else | |
3052 | family = AF_INET; | |
e690ca94 | 3053 | #endif |
a319f7c1 | 3054 | } |
e1652a86 KS |
3055 | #ifdef HAVE_LOCAL_SOCKETS |
3056 | else if (EQ (tem, Qlocal)) | |
3057 | family = AF_LOCAL; | |
3058 | #endif | |
3059 | #ifdef AF_INET6 | |
3060 | else if (EQ (tem, Qipv6)) | |
3061 | family = AF_INET6; | |
3062 | #endif | |
3063 | else if (EQ (tem, Qipv4)) | |
3064 | family = AF_INET; | |
d311d28c | 3065 | else if (TYPE_RANGED_INTEGERP (int, tem)) |
e1652a86 KS |
3066 | family = XINT (tem); |
3067 | else | |
e690ca94 | 3068 | error ("Unknown address family"); |
e1652a86 | 3069 | |
e690ca94 KS |
3070 | ai.ai_family = family; |
3071 | ||
3072 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3073 | service = Fplist_get (contact, QCservice); | |
3074 | ||
66a9f7f4 SM |
3075 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3076 | host = Fplist_get (contact, QChost); | |
3077 | if (!NILP (host)) | |
3078 | { | |
3079 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
3080 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
3081 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
3082 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
3083 | CHECK_STRING (host); |
3084 | } | |
3085 | ||
e690ca94 KS |
3086 | #ifdef HAVE_LOCAL_SOCKETS |
3087 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3088 | { |
66a9f7f4 SM |
3089 | if (!NILP (host)) |
3090 | { | |
3091 | message (":family local ignores the :host \"%s\" property", | |
3092 | SDATA (host)); | |
3093 | contact = Fplist_put (contact, QChost, Qnil); | |
3094 | host = Qnil; | |
3095 | } | |
b7826503 | 3096 | CHECK_STRING (service); |
72af86bd | 3097 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3098 | address_un.sun_family = AF_LOCAL; |
e99a530f PE |
3099 | if (sizeof address_un.sun_path <= SBYTES (service)) |
3100 | error ("Service name too long"); | |
3101 | strcpy (address_un.sun_path, SSDATA (service)); | |
e690ca94 KS |
3102 | ai.ai_addr = (struct sockaddr *) &address_un; |
3103 | ai.ai_addrlen = sizeof address_un; | |
3104 | goto open_socket; | |
d0d6b7c5 | 3105 | } |
e690ca94 | 3106 | #endif |
a319f7c1 | 3107 | |
798b64bb KH |
3108 | /* Slow down polling to every ten seconds. |
3109 | Some kernels have a bug which causes retrying connect to fail | |
3110 | after a connect. Polling can interfere with gethostbyname too. */ | |
3111 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3112 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3113 | { |
3114 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3115 | bind_polling_period (10); | |
3116 | } | |
798b64bb KH |
3117 | #endif |
3118 | ||
a319f7c1 | 3119 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3120 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3121 | Otherwise, use getservbyname to lookup the service. */ | |
3122 | if (!NILP (host)) | |
3123 | { | |
3124 | ||
3125 | /* SERVICE can either be a string or int. | |
3126 | Convert to a C string for later use by getaddrinfo. */ | |
3127 | if (EQ (service, Qt)) | |
3128 | portstring = "0"; | |
3129 | else if (INTEGERP (service)) | |
3130 | { | |
c2982e87 | 3131 | sprintf (portbuf, "%"pI"d", XINT (service)); |
e690ca94 KS |
3132 | portstring = portbuf; |
3133 | } | |
3134 | else | |
3135 | { | |
3136 | CHECK_STRING (service); | |
42a5b22f | 3137 | portstring = SSDATA (service); |
e690ca94 KS |
3138 | } |
3139 | ||
3140 | immediate_quit = 1; | |
3141 | QUIT; | |
3142 | memset (&hints, 0, sizeof (hints)); | |
3143 | hints.ai_flags = 0; | |
e1652a86 | 3144 | hints.ai_family = family; |
e690ca94 KS |
3145 | hints.ai_socktype = socktype; |
3146 | hints.ai_protocol = 0; | |
08116b48 CY |
3147 | |
3148 | #ifdef HAVE_RES_INIT | |
3149 | res_init (); | |
3150 | #endif | |
3151 | ||
42a5b22f | 3152 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3153 | if (ret) |
f6270f62 | 3154 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3155 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3156 | #else |
42a5b22f | 3157 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3158 | #endif |
e690ca94 | 3159 | immediate_quit = 0; |
a319f7c1 | 3160 | |
e690ca94 KS |
3161 | goto open_socket; |
3162 | } | |
3163 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3164 | |
e690ca94 KS |
3165 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3166 | has been specified (e.g. for a local server process). */ | |
3167 | ||
3168 | if (EQ (service, Qt)) | |
3169 | port = 0; | |
3170 | else if (INTEGERP (service)) | |
3171 | port = htons ((unsigned short) XINT (service)); | |
3172 | else | |
616da37c | 3173 | { |
e690ca94 KS |
3174 | struct servent *svc_info; |
3175 | CHECK_STRING (service); | |
42a5b22f | 3176 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3177 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3178 | if (svc_info == 0) | |
d5db4077 | 3179 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3180 | port = svc_info->s_port; |
3181 | } | |
3182 | ||
72af86bd | 3183 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3184 | address_in.sin_family = family; |
3185 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3186 | address_in.sin_port = port; | |
3187 | ||
3188 | #ifndef HAVE_GETADDRINFO | |
3189 | if (!NILP (host)) | |
3190 | { | |
3191 | struct hostent *host_info_ptr; | |
3192 | ||
c5e87d10 | 3193 | /* gethostbyname may fail with TRY_AGAIN, but we don't honor that, |
f3d9532b | 3194 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3195 | immediate_quit = 1; |
3196 | QUIT; | |
08116b48 CY |
3197 | |
3198 | #ifdef HAVE_RES_INIT | |
3199 | res_init (); | |
3200 | #endif | |
3201 | ||
d5db4077 | 3202 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3203 | immediate_quit = 0; |
177c0ea7 | 3204 | |
e690ca94 KS |
3205 | if (host_info_ptr) |
3206 | { | |
72af86bd AS |
3207 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3208 | host_info_ptr->h_length); | |
e690ca94 KS |
3209 | family = host_info_ptr->h_addrtype; |
3210 | address_in.sin_family = family; | |
3211 | } | |
3212 | else | |
3213 | /* Attempt to interpret host as numeric inet address */ | |
3214 | { | |
4624371d | 3215 | unsigned long numeric_addr; |
51b59d79 | 3216 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3217 | if (numeric_addr == -1) |
d5db4077 | 3218 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3219 | |
72af86bd AS |
3220 | memcpy (&address_in.sin_addr, &numeric_addr, |
3221 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3222 | } |
d0d6b7c5 | 3223 | |
e690ca94 | 3224 | } |
dd2a17ab | 3225 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3226 | |
e690ca94 KS |
3227 | ai.ai_family = family; |
3228 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3229 | ai.ai_addrlen = sizeof address_in; | |
3230 | ||
3231 | open_socket: | |
3232 | ||
dd2a17ab | 3233 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3234 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3235 | s = -1; |
457a9bee | 3236 | |
dd2a17ab KS |
3237 | for (lres = res; lres; lres = lres->ai_next) |
3238 | { | |
f66c7cf8 | 3239 | ptrdiff_t optn; |
c5101a77 | 3240 | int optbits; |
6b61353c | 3241 | |
4dc343ee | 3242 | #ifdef WINDOWSNT |
649dbf36 | 3243 | retry_connect: |
4dc343ee | 3244 | #endif |
649dbf36 | 3245 | |
dd2a17ab KS |
3246 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3247 | if (s < 0) | |
3248 | { | |
3249 | xerrno = errno; | |
3250 | continue; | |
3251 | } | |
0f2ee0c1 | 3252 | |
e690ca94 KS |
3253 | #ifdef DATAGRAM_SOCKETS |
3254 | if (!is_server && socktype == SOCK_DGRAM) | |
3255 | break; | |
3256 | #endif /* DATAGRAM_SOCKETS */ | |
3257 | ||
dd2a17ab | 3258 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3259 | if (is_non_blocking_client) |
dd2a17ab KS |
3260 | { |
3261 | #ifdef O_NONBLOCK | |
3262 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3263 | #else | |
3264 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3265 | #endif | |
3266 | if (ret < 0) | |
3267 | { | |
3268 | xerrno = errno; | |
3269 | emacs_close (s); | |
3270 | s = -1; | |
3271 | continue; | |
3272 | } | |
3273 | } | |
3274 | #endif | |
177c0ea7 | 3275 | |
dd2a17ab | 3276 | /* Make us close S if quit. */ |
dd2a17ab KS |
3277 | record_unwind_protect (close_file_unwind, make_number (s)); |
3278 | ||
6b61353c KH |
3279 | /* Parse network options in the arg list. |
3280 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3281 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3282 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3283 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3284 | ||
e690ca94 KS |
3285 | if (is_server) |
3286 | { | |
3287 | /* Configure as a server socket. */ | |
6b61353c KH |
3288 | |
3289 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3290 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3291 | #ifdef HAVE_LOCAL_SOCKETS |
3292 | if (family != AF_LOCAL) | |
3293 | #endif | |
6b61353c KH |
3294 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3295 | { | |
3296 | int optval = 1; | |
3297 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3298 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3299 | } | |
177c0ea7 | 3300 | |
e690ca94 KS |
3301 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3302 | report_file_error ("Cannot bind server socket", Qnil); | |
3303 | ||
3304 | #ifdef HAVE_GETSOCKNAME | |
3305 | if (EQ (service, Qt)) | |
3306 | { | |
3307 | struct sockaddr_in sa1; | |
401bf9b4 | 3308 | socklen_t len1 = sizeof (sa1); |
e690ca94 KS |
3309 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3310 | { | |
3311 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3312 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3313 | contact = Fplist_put (contact, QCservice, service); |
3314 | } | |
3315 | } | |
3316 | #endif | |
3317 | ||
84b31826 | 3318 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3319 | report_file_error ("Cannot listen on server socket", Qnil); |
3320 | ||
3321 | break; | |
3322 | } | |
3323 | ||
dd2a17ab KS |
3324 | immediate_quit = 1; |
3325 | QUIT; | |
3326 | ||
dd2a17ab KS |
3327 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3328 | xerrno = errno; | |
3329 | ||
dd2a17ab KS |
3330 | if (ret == 0 || xerrno == EISCONN) |
3331 | { | |
dd2a17ab KS |
3332 | /* The unwind-protect will be discarded afterwards. |
3333 | Likewise for immediate_quit. */ | |
3334 | break; | |
3335 | } | |
3336 | ||
3337 | #ifdef NON_BLOCKING_CONNECT | |
3338 | #ifdef EINPROGRESS | |
e690ca94 | 3339 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3340 | break; |
3341 | #else | |
3342 | #ifdef EWOULDBLOCK | |
e690ca94 | 3343 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3344 | break; |
3345 | #endif | |
3346 | #endif | |
3347 | #endif | |
649dbf36 CY |
3348 | |
3349 | #ifndef WINDOWSNT | |
cd591dbc HE |
3350 | if (xerrno == EINTR) |
3351 | { | |
3352 | /* Unlike most other syscalls connect() cannot be called | |
3353 | again. (That would return EALREADY.) The proper way to | |
d35af63c | 3354 | wait for completion is pselect(). */ |
401bf9b4 PE |
3355 | int sc; |
3356 | socklen_t len; | |
cd591dbc HE |
3357 | SELECT_TYPE fdset; |
3358 | retry_select: | |
3359 | FD_ZERO (&fdset); | |
3360 | FD_SET (s, &fdset); | |
3361 | QUIT; | |
d35af63c | 3362 | sc = pselect (s + 1, NULL, &fdset, NULL, NULL, NULL); |
cd591dbc HE |
3363 | if (sc == -1) |
3364 | { | |
649dbf36 | 3365 | if (errno == EINTR) |
cd591dbc | 3366 | goto retry_select; |
649dbf36 | 3367 | else |
cd591dbc HE |
3368 | report_file_error ("select failed", Qnil); |
3369 | } | |
3370 | eassert (sc > 0); | |
649dbf36 CY |
3371 | |
3372 | len = sizeof xerrno; | |
3373 | eassert (FD_ISSET (s, &fdset)); | |
3374 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3375 | report_file_error ("getsockopt failed", Qnil); | |
3376 | if (xerrno) | |
3377 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3378 | else | |
3379 | break; | |
cd591dbc | 3380 | } |
649dbf36 | 3381 | #endif /* !WINDOWSNT */ |
e333e864 | 3382 | |
0f2ee0c1 RS |
3383 | immediate_quit = 0; |
3384 | ||
dd2a17ab | 3385 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3386 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3387 | emacs_close (s); |
dd2a17ab | 3388 | s = -1; |
649dbf36 CY |
3389 | |
3390 | #ifdef WINDOWSNT | |
3391 | if (xerrno == EINTR) | |
3392 | goto retry_connect; | |
3393 | #endif | |
dd2a17ab | 3394 | } |
457a9bee | 3395 | |
e690ca94 KS |
3396 | if (s >= 0) |
3397 | { | |
3398 | #ifdef DATAGRAM_SOCKETS | |
3399 | if (socktype == SOCK_DGRAM) | |
3400 | { | |
3401 | if (datagram_address[s].sa) | |
3402 | abort (); | |
23f86fce | 3403 | datagram_address[s].sa = xmalloc (lres->ai_addrlen); |
e690ca94 KS |
3404 | datagram_address[s].len = lres->ai_addrlen; |
3405 | if (is_server) | |
3406 | { | |
3407 | Lisp_Object remote; | |
72af86bd | 3408 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3409 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3410 | { | |
3411 | int rfamily, rlen; | |
3412 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3413 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3414 | conv_lisp_to_sockaddr (rfamily, remote, | |
3415 | datagram_address[s].sa, rlen); | |
3416 | } | |
3417 | } | |
3418 | else | |
72af86bd | 3419 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3420 | } |
3421 | #endif | |
177c0ea7 | 3422 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3423 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3424 | #ifdef HAVE_GETSOCKNAME |
3425 | if (!is_server) | |
3426 | { | |
3427 | struct sockaddr_in sa1; | |
401bf9b4 | 3428 | socklen_t len1 = sizeof (sa1); |
2185db04 KS |
3429 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3430 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3431 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3432 | } |
3433 | #endif | |
e690ca94 KS |
3434 | } |
3435 | ||
54b3b62f YM |
3436 | immediate_quit = 0; |
3437 | ||
dd2a17ab | 3438 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3439 | if (res != &ai) |
54b3b62f YM |
3440 | { |
3441 | BLOCK_INPUT; | |
3442 | freeaddrinfo (res); | |
3443 | UNBLOCK_INPUT; | |
3444 | } | |
dd2a17ab KS |
3445 | #endif |
3446 | ||
e690ca94 KS |
3447 | /* Discard the unwind protect for closing S, if any. */ |
3448 | specpdl_ptr = specpdl + count1; | |
3449 | ||
3450 | /* Unwind bind_polling_period and request_sigio. */ | |
3451 | unbind_to (count, Qnil); | |
3452 | ||
dd2a17ab KS |
3453 | if (s < 0) |
3454 | { | |
dd2a17ab KS |
3455 | /* If non-blocking got this far - and failed - assume non-blocking is |
3456 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3457 | the normal blocking calls to open-network-stream handles this error |
3458 | better. */ | |
3459 | if (is_non_blocking_client) | |
dd2a17ab | 3460 | return Qnil; |
dd2a17ab | 3461 | |
d0d6b7c5 | 3462 | errno = xerrno; |
e690ca94 KS |
3463 | if (is_server) |
3464 | report_file_error ("make server process failed", contact); | |
3465 | else | |
3466 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3467 | } |
44ade2e9 | 3468 | |
d0d6b7c5 | 3469 | inch = s; |
59f23005 | 3470 | outch = s; |
d0d6b7c5 JB |
3471 | |
3472 | if (!NILP (buffer)) | |
3473 | buffer = Fget_buffer_create (buffer); | |
3474 | proc = make_process (name); | |
3475 | ||
3476 | chan_process[inch] = proc; | |
3477 | ||
3478 | #ifdef O_NONBLOCK | |
3479 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3480 | #else | |
3481 | #ifdef O_NDELAY | |
3482 | fcntl (inch, F_SETFL, O_NDELAY); | |
3483 | #endif | |
3484 | #endif | |
3485 | ||
e690ca94 KS |
3486 | p = XPROCESS (proc); |
3487 | ||
6a09a33b PE |
3488 | pset_childp (p, contact); |
3489 | pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist))); | |
3490 | pset_type (p, Qnetwork); | |
177c0ea7 | 3491 | |
6a09a33b PE |
3492 | pset_buffer (p, buffer); |
3493 | pset_sentinel (p, sentinel); | |
3494 | pset_filter (p, filter); | |
3495 | pset_log (p, Fplist_get (contact, QClog)); | |
e690ca94 | 3496 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) |
60f0fb11 | 3497 | p->kill_without_query = 1; |
e690ca94 | 3498 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
6a09a33b | 3499 | pset_command (p, Qt); |
6bfd98e7 | 3500 | p->pid = 0; |
60f0fb11 SM |
3501 | p->infd = inch; |
3502 | p->outfd = outch; | |
84b31826 | 3503 | if (is_server && socktype != SOCK_DGRAM) |
6a09a33b | 3504 | pset_status (p, Qlisten); |
dd2a17ab | 3505 | |
f523e0c3 SM |
3506 | /* Make the process marker point into the process buffer (if any). */ |
3507 | if (BUFFERP (buffer)) | |
4d2b044c | 3508 | set_marker_both (p->mark, buffer, |
f523e0c3 SM |
3509 | BUF_ZV (XBUFFER (buffer)), |
3510 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3511 | ||
dd2a17ab | 3512 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3513 | if (is_non_blocking_client) |
dd2a17ab KS |
3514 | { |
3515 | /* We may get here if connect did succeed immediately. However, | |
3516 | in that case, we still need to signal this like a non-blocking | |
3517 | connection. */ | |
6a09a33b | 3518 | pset_status (p, Qconnect); |
dd2a17ab KS |
3519 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3520 | { | |
3521 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3522 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3523 | num_pending_connects++; |
3524 | } | |
3525 | } | |
3526 | else | |
3527 | #endif | |
e690ca94 KS |
3528 | /* A server may have a client filter setting of Qt, but it must |
3529 | still listen for incoming connects unless it is stopped. */ | |
4d2b044c DA |
3530 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
3531 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3532 | { |
3533 | FD_SET (inch, &input_wait_mask); | |
3534 | FD_SET (inch, &non_keyboard_wait_mask); | |
3535 | } | |
3536 | ||
7d0e672e RS |
3537 | if (inch > max_process_desc) |
3538 | max_process_desc = inch; | |
d0d6b7c5 | 3539 | |
e690ca94 KS |
3540 | tem = Fplist_member (contact, QCcoding); |
3541 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3542 | tem = Qnil; /* No error message (too late!). */ | |
3543 | ||
67918941 RS |
3544 | { |
3545 | /* Setup coding systems for communicating with the network stream. */ | |
dbf31225 | 3546 | struct gcpro gcpro1; |
67918941 RS |
3547 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
3548 | Lisp_Object coding_systems = Qt; | |
b93aacde | 3549 | Lisp_Object fargs[5], val; |
67918941 | 3550 | |
e690ca94 | 3551 | if (!NILP (tem)) |
6b61353c KH |
3552 | { |
3553 | val = XCAR (XCDR (tem)); | |
3554 | if (CONSP (val)) | |
3555 | val = XCAR (val); | |
3556 | } | |
e690ca94 | 3557 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3558 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3559 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3560 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3561 | /* We dare not decode end-of-line format by setting VAL to |
3562 | Qraw_text, because the existing Emacs Lisp libraries | |
9858f6c3 | 3563 | assume that they receive bare code including a sequence of |
67918941 RS |
3564 | CR LF. */ |
3565 | val = Qnil; | |
3566 | else | |
3567 | { | |
991234f0 KS |
3568 | if (NILP (host) || NILP (service)) |
3569 | coding_systems = Qnil; | |
3570 | else | |
3571 | { | |
b93aacde PE |
3572 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3573 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3574 | GCPRO1 (proc); |
b93aacde | 3575 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3576 | UNGCPRO; |
991234f0 | 3577 | } |
67918941 | 3578 | if (CONSP (coding_systems)) |
70949dac | 3579 | val = XCAR (coding_systems); |
67918941 | 3580 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3581 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3582 | else |
3583 | val = Qnil; | |
3584 | } | |
6a09a33b | 3585 | pset_decode_coding_system (p, val); |
0fa1789e | 3586 | |
e690ca94 | 3587 | if (!NILP (tem)) |
6b61353c KH |
3588 | { |
3589 | val = XCAR (XCDR (tem)); | |
3590 | if (CONSP (val)) | |
3591 | val = XCDR (val); | |
3592 | } | |
e690ca94 | 3593 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3594 | val = Vcoding_system_for_write; |
4b4deea2 | 3595 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3596 | val = Qnil; |
3597 | else | |
3598 | { | |
3599 | if (EQ (coding_systems, Qt)) | |
3600 | { | |
991234f0 KS |
3601 | if (NILP (host) || NILP (service)) |
3602 | coding_systems = Qnil; | |
3603 | else | |
3604 | { | |
b93aacde PE |
3605 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3606 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3607 | GCPRO1 (proc); |
b93aacde | 3608 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3609 | UNGCPRO; |
991234f0 | 3610 | } |
67918941 RS |
3611 | } |
3612 | if (CONSP (coding_systems)) | |
70949dac | 3613 | val = XCDR (coding_systems); |
67918941 | 3614 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3615 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3616 | else |
3617 | val = Qnil; | |
3618 | } | |
6a09a33b | 3619 | pset_encode_coding_system (p, val); |
67918941 | 3620 | } |
03f04413 | 3621 | setup_process_coding_systems (proc); |
0fa1789e | 3622 | |
6a09a33b | 3623 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 3624 | p->decoding_carryover = 0; |
6a09a33b | 3625 | pset_encoding_buf (p, empty_unibyte_string); |
0fa1789e | 3626 | |
e690ca94 | 3627 | p->inherit_coding_system_flag |
e6fca843 | 3628 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3629 | |
d0d6b7c5 JB |
3630 | UNGCPRO; |
3631 | return proc; | |
3632 | } | |
d0d6b7c5 | 3633 | |
6b61353c | 3634 | \f |
5e617bc2 | 3635 | #if defined (HAVE_NET_IF_H) |
6b61353c KH |
3636 | |
3637 | #ifdef SIOCGIFCONF | |
3638 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3639 | doc: /* Return an alist of all network interfaces and their network address. | |
3640 | Each element is a cons, the car of which is a string containing the | |
3641 | interface name, and the cdr is the network address in internal | |
3642 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3643 | (void) |
6b61353c KH |
3644 | { |
3645 | struct ifconf ifconf; | |
377538cb JD |
3646 | struct ifreq *ifreq; |
3647 | void *buf = NULL; | |
70c60eb2 PE |
3648 | ptrdiff_t buf_size = 512; |
3649 | int s, i; | |
6b61353c KH |
3650 | Lisp_Object res; |
3651 | ||
3652 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3653 | if (s < 0) | |
3654 | return Qnil; | |
3655 | ||
76667214 | 3656 | do |
6b61353c | 3657 | { |
76667214 PE |
3658 | buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1); |
3659 | ifconf.ifc_buf = buf; | |
3660 | ifconf.ifc_len = buf_size; | |
156bffbe AS |
3661 | if (ioctl (s, SIOCGIFCONF, &ifconf)) |
3662 | { | |
3663 | close (s); | |
76667214 | 3664 | xfree (buf); |
156bffbe AS |
3665 | return Qnil; |
3666 | } | |
6b61353c | 3667 | } |
76667214 | 3668 | while (ifconf.ifc_len == buf_size); |
6b61353c KH |
3669 | |
3670 | close (s); | |
6b61353c KH |
3671 | |
3672 | res = Qnil; | |
156bffbe AS |
3673 | ifreq = ifconf.ifc_req; |
3674 | while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len) | |
6b61353c | 3675 | { |
377538cb JD |
3676 | struct ifreq *ifq = ifreq; |
3677 | #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN | |
156bffbe AS |
3678 | #define SIZEOF_IFREQ(sif) \ |
3679 | ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \ | |
3680 | ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len) | |
377538cb JD |
3681 | |
3682 | int len = SIZEOF_IFREQ (ifq); | |
3683 | #else | |
3684 | int len = sizeof (*ifreq); | |
3685 | #endif | |
6b61353c | 3686 | char namebuf[sizeof (ifq->ifr_name) + 1]; |
377538cb | 3687 | i += len; |
156bffbe | 3688 | ifreq = (struct ifreq *) ((char *) ifreq + len); |
377538cb | 3689 | |
6b61353c KH |
3690 | if (ifq->ifr_addr.sa_family != AF_INET) |
3691 | continue; | |
377538cb | 3692 | |
72af86bd | 3693 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3694 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3695 | res = Fcons (Fcons (build_string (namebuf), | |
3696 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3697 | sizeof (struct sockaddr))), | |
3698 | res); | |
3699 | } | |
3700 | ||
377538cb | 3701 | xfree (buf); |
6b61353c KH |
3702 | return res; |
3703 | } | |
3704 | #endif /* SIOCGIFCONF */ | |
3705 | ||
5e617bc2 | 3706 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
6b61353c KH |
3707 | |
3708 | struct ifflag_def { | |
3709 | int flag_bit; | |
91433552 | 3710 | const char *flag_sym; |
6b61353c KH |
3711 | }; |
3712 | ||
91433552 | 3713 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3714 | #ifdef IFF_UP |
3715 | { IFF_UP, "up" }, | |
3716 | #endif | |
3717 | #ifdef IFF_BROADCAST | |
3718 | { IFF_BROADCAST, "broadcast" }, | |
3719 | #endif | |
3720 | #ifdef IFF_DEBUG | |
3721 | { IFF_DEBUG, "debug" }, | |
3722 | #endif | |
3723 | #ifdef IFF_LOOPBACK | |
3724 | { IFF_LOOPBACK, "loopback" }, | |
3725 | #endif | |
3726 | #ifdef IFF_POINTOPOINT | |
3727 | { IFF_POINTOPOINT, "pointopoint" }, | |
3728 | #endif | |
3729 | #ifdef IFF_RUNNING | |
3730 | { IFF_RUNNING, "running" }, | |
3731 | #endif | |
3732 | #ifdef IFF_NOARP | |
3733 | { IFF_NOARP, "noarp" }, | |
3734 | #endif | |
3735 | #ifdef IFF_PROMISC | |
3736 | { IFF_PROMISC, "promisc" }, | |
3737 | #endif | |
3738 | #ifdef IFF_NOTRAILERS | |
377538cb JD |
3739 | #ifdef NS_IMPL_COCOA |
3740 | /* Really means smart, notrailers is obsolete */ | |
3741 | { IFF_NOTRAILERS, "smart" }, | |
3742 | #else | |
6b61353c KH |
3743 | { IFF_NOTRAILERS, "notrailers" }, |
3744 | #endif | |
377538cb | 3745 | #endif |
6b61353c KH |
3746 | #ifdef IFF_ALLMULTI |
3747 | { IFF_ALLMULTI, "allmulti" }, | |
3748 | #endif | |
3749 | #ifdef IFF_MASTER | |
3750 | { IFF_MASTER, "master" }, | |
3751 | #endif | |
3752 | #ifdef IFF_SLAVE | |
3753 | { IFF_SLAVE, "slave" }, | |
3754 | #endif | |
3755 | #ifdef IFF_MULTICAST | |
3756 | { IFF_MULTICAST, "multicast" }, | |
3757 | #endif | |
3758 | #ifdef IFF_PORTSEL | |
3759 | { IFF_PORTSEL, "portsel" }, | |
3760 | #endif | |
3761 | #ifdef IFF_AUTOMEDIA | |
3762 | { IFF_AUTOMEDIA, "automedia" }, | |
3763 | #endif | |
3764 | #ifdef IFF_DYNAMIC | |
3765 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3766 | #endif |
2026418c YM |
3767 | #ifdef IFF_OACTIVE |
3768 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3769 | #endif |
3770 | #ifdef IFF_SIMPLEX | |
3771 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3772 | #endif | |
3773 | #ifdef IFF_LINK0 | |
3774 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3775 | #endif | |
3776 | #ifdef IFF_LINK1 | |
3777 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3778 | #endif | |
3779 | #ifdef IFF_LINK2 | |
3780 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3781 | #endif |
3782 | { 0, 0 } | |
3783 | }; | |
3784 | ||
3785 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3786 | doc: /* Return information about network interface named IFNAME. | |
3787 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3788 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
e4920bc9 | 3789 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and |
6b61353c | 3790 | FLAGS is the current flags of the interface. */) |
5842a27b | 3791 | (Lisp_Object ifname) |
6b61353c KH |
3792 | { |
3793 | struct ifreq rq; | |
3794 | Lisp_Object res = Qnil; | |
3795 | Lisp_Object elt; | |
3796 | int s; | |
3797 | int any = 0; | |
0a0d27fb PE |
3798 | #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \ |
3799 | && defined HAVE_GETIFADDRS && defined LLADDR) | |
377538cb JD |
3800 | struct ifaddrs *ifap; |
3801 | #endif | |
6b61353c KH |
3802 | |
3803 | CHECK_STRING (ifname); | |
3804 | ||
e99a530f PE |
3805 | if (sizeof rq.ifr_name <= SBYTES (ifname)) |
3806 | error ("interface name too long"); | |
3807 | strcpy (rq.ifr_name, SSDATA (ifname)); | |
6b61353c KH |
3808 | |
3809 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3810 | if (s < 0) | |
3811 | return Qnil; | |
3812 | ||
3813 | elt = Qnil; | |
5e617bc2 | 3814 | #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS) |
6b61353c KH |
3815 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3816 | { | |
3817 | int flags = rq.ifr_flags; | |
91433552 | 3818 | const struct ifflag_def *fp; |
6b61353c KH |
3819 | int fnum; |
3820 | ||
377538cb JD |
3821 | /* If flags is smaller than int (i.e. short) it may have the high bit set |
3822 | due to IFF_MULTICAST. In that case, sign extending it into | |
3823 | an int is wrong. */ | |
3824 | if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags)) | |
3825 | flags = (unsigned short) rq.ifr_flags; | |
3826 | ||
bc57d757 | 3827 | any = 1; |
82a80058 | 3828 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3829 | { |
3830 | if (flags & fp->flag_bit) | |
3831 | { | |
3832 | elt = Fcons (intern (fp->flag_sym), elt); | |
3833 | flags -= fp->flag_bit; | |
3834 | } | |
3835 | } | |
fa3c87e1 | 3836 | for (fnum = 0; flags && fnum < 32; flags >>= 1, fnum++) |
6b61353c | 3837 | { |
fa3c87e1 | 3838 | if (flags & 1) |
6b61353c KH |
3839 | { |
3840 | elt = Fcons (make_number (fnum), elt); | |
3841 | } | |
3842 | } | |
3843 | } | |
3844 | #endif | |
3845 | res = Fcons (elt, res); | |
3846 | ||
3847 | elt = Qnil; | |
5e617bc2 | 3848 | #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR) |
6b61353c KH |
3849 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3850 | { | |
3851 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3852 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3853 | int n; | |
3854 | ||
bc57d757 | 3855 | any = 1; |
6b61353c KH |
3856 | for (n = 0; n < 6; n++) |
3857 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3858 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3859 | } | |
5e617bc2 | 3860 | #elif defined (HAVE_GETIFADDRS) && defined (LLADDR) |
377538cb JD |
3861 | if (getifaddrs (&ifap) != -1) |
3862 | { | |
3863 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3864 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3865 | struct ifaddrs *it; | |
3866 | ||
3867 | for (it = ifap; it != NULL; it = it->ifa_next) | |
3868 | { | |
3869 | struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr; | |
3870 | unsigned char linkaddr[6]; | |
3871 | int n; | |
3872 | ||
3873 | if (it->ifa_addr->sa_family != AF_LINK | |
3874 | || strcmp (it->ifa_name, SSDATA (ifname)) != 0 | |
3875 | || sdl->sdl_alen != 6) | |
3876 | continue; | |
3877 | ||
5e617bc2 | 3878 | memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen); |
377538cb JD |
3879 | for (n = 0; n < 6; n++) |
3880 | p->contents[n] = make_number (linkaddr[n]); | |
3881 | ||
3882 | elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr); | |
3883 | break; | |
3884 | } | |
3885 | } | |
3886 | #ifdef HAVE_FREEIFADDRS | |
3887 | freeifaddrs (ifap); | |
6b61353c | 3888 | #endif |
377538cb JD |
3889 | |
3890 | #endif /* HAVE_GETIFADDRS && LLADDR */ | |
3891 | ||
6b61353c KH |
3892 | res = Fcons (elt, res); |
3893 | ||
3894 | elt = Qnil; | |
5e617bc2 | 3895 | #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3896 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3897 | { | |
bc57d757 | 3898 | any = 1; |
2026418c | 3899 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3900 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3901 | #else |
3902 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3903 | #endif | |
6b61353c KH |
3904 | } |
3905 | #endif | |
3906 | res = Fcons (elt, res); | |
3907 | ||
3908 | elt = Qnil; | |
5e617bc2 | 3909 | #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
6b61353c KH |
3910 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3911 | { | |
bc57d757 | 3912 | any = 1; |
6b61353c KH |
3913 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); |
3914 | } | |
3915 | #endif | |
3916 | res = Fcons (elt, res); | |
3917 | ||
3918 | elt = Qnil; | |
5e617bc2 | 3919 | #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR) |
6b61353c KH |
3920 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3921 | { | |
bc57d757 | 3922 | any = 1; |
6b61353c KH |
3923 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); |
3924 | } | |
3925 | #endif | |
3926 | res = Fcons (elt, res); | |
3927 | ||
3928 | close (s); | |
3929 | ||
3930 | return any ? res : Qnil; | |
3931 | } | |
3932 | #endif | |
5e617bc2 | 3933 | #endif /* defined (HAVE_NET_IF_H) */ |
6b61353c | 3934 | |
04391069 RS |
3935 | /* Turn off input and output for process PROC. */ |
3936 | ||
40ccffa6 | 3937 | static void |
d3da34e0 | 3938 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3939 | { |
3940 | register int inchannel, outchannel; | |
3941 | register struct Lisp_Process *p = XPROCESS (proc); | |
3942 | ||
9c6c6f49 CY |
3943 | #ifdef HAVE_GNUTLS |
3944 | /* Delete GnuTLS structures in PROC, if any. */ | |
3945 | emacs_gnutls_deinit (proc); | |
3946 | #endif /* HAVE_GNUTLS */ | |
3947 | ||
60f0fb11 SM |
3948 | inchannel = p->infd; |
3949 | outchannel = p->outfd; | |
d0d6b7c5 | 3950 | |
6b61353c | 3951 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3952 | if (p->read_output_delay > 0) |
6b61353c KH |
3953 | { |
3954 | if (--process_output_delay_count < 0) | |
3955 | process_output_delay_count = 0; | |
60f0fb11 SM |
3956 | p->read_output_delay = 0; |
3957 | p->read_output_skip = 0; | |
6b61353c KH |
3958 | } |
3959 | #endif | |
f3d9532b | 3960 | |
a9f2c884 | 3961 | if (inchannel >= 0) |
d0d6b7c5 JB |
3962 | { |
3963 | /* Beware SIGCHLD hereabouts. */ | |
3964 | flush_pending_output (inchannel); | |
68c45bf0 | 3965 | emacs_close (inchannel); |
a9f2c884 | 3966 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3967 | emacs_close (outchannel); |
d0d6b7c5 | 3968 | |
60f0fb11 SM |
3969 | p->infd = -1; |
3970 | p->outfd = -1; | |
e690ca94 KS |
3971 | #ifdef DATAGRAM_SOCKETS |
3972 | if (DATAGRAM_CHAN_P (inchannel)) | |
3973 | { | |
3974 | xfree (datagram_address[inchannel].sa); | |
3975 | datagram_address[inchannel].sa = 0; | |
3976 | datagram_address[inchannel].len = 0; | |
3977 | } | |
3978 | #endif | |
d0d6b7c5 JB |
3979 | chan_process[inchannel] = Qnil; |
3980 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3981 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3982 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3983 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3984 | { | |
3985 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 3986 | FD_CLR (inchannel, &write_mask); |
dd2a17ab KS |
3987 | if (--num_pending_connects < 0) |
3988 | abort (); | |
3989 | } | |
bad49fc7 | 3990 | #endif |
7d0e672e RS |
3991 | if (inchannel == max_process_desc) |
3992 | { | |
3993 | int i; | |
3994 | /* We just closed the highest-numbered process input descriptor, | |
3995 | so recompute the highest-numbered one now. */ | |
3996 | max_process_desc = 0; | |
3997 | for (i = 0; i < MAXDESC; i++) | |
3998 | if (!NILP (chan_process[i])) | |
3999 | max_process_desc = i; | |
4000 | } | |
d0d6b7c5 JB |
4001 | } |
4002 | } | |
4003 | ||
d0d6b7c5 JB |
4004 | \f |
4005 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 4006 | 0, 4, 0, |
fdb82f93 PJ |
4007 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
4008 | It is read into the process' buffers or given to their filter functions. | |
4009 | Non-nil arg PROCESS means do not return until some output has been received | |
4010 | from PROCESS. | |
5088da42 | 4011 | |
2a7bb882 MR |
4012 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
4013 | and milliseconds to wait; return after that much time whether or not | |
4014 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 4015 | it specifies a fractional number of seconds to wait. |
891bd142 | 4016 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 4017 | |
107ed38d KS |
4018 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
4019 | from PROCESS, suspending reading output from other processes. | |
4020 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 4021 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 4022 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 4023 | { |
d35af63c PE |
4024 | intmax_t secs; |
4025 | int nsecs; | |
d0d6b7c5 | 4026 | |
0748d150 | 4027 | if (! NILP (process)) |
b7826503 | 4028 | CHECK_PROCESS (process); |
107ed38d KS |
4029 | else |
4030 | just_this_one = Qnil; | |
0748d150 | 4031 | |
891bd142 SM |
4032 | if (!NILP (millisec)) |
4033 | { /* Obsolete calling convention using integers rather than floats. */ | |
4034 | CHECK_NUMBER (millisec); | |
4035 | if (NILP (seconds)) | |
4036 | seconds = make_float (XINT (millisec) / 1000.0); | |
4037 | else | |
4038 | { | |
4039 | CHECK_NUMBER (seconds); | |
4040 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
4041 | } | |
4042 | } | |
4043 | ||
d35af63c PE |
4044 | secs = 0; |
4045 | nsecs = -1; | |
4046 | ||
5088da42 | 4047 | if (!NILP (seconds)) |
d0d6b7c5 | 4048 | { |
d35af63c PE |
4049 | if (INTEGERP (seconds)) |
4050 | { | |
4051 | if (0 < XINT (seconds)) | |
4052 | { | |
4053 | secs = XINT (seconds); | |
4054 | nsecs = 0; | |
4055 | } | |
4056 | } | |
4057 | else if (FLOATP (seconds)) | |
4058 | { | |
4059 | if (0 < XFLOAT_DATA (seconds)) | |
4060 | { | |
4061 | EMACS_TIME t = EMACS_TIME_FROM_DOUBLE (XFLOAT_DATA (seconds)); | |
f1dd8073 | 4062 | secs = min (EMACS_SECS (t), WAIT_READING_MAX); |
d35af63c PE |
4063 | nsecs = EMACS_NSECS (t); |
4064 | } | |
4065 | } | |
4066 | else | |
4067 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 4068 | } |
d35af63c PE |
4069 | else if (! NILP (process)) |
4070 | nsecs = 0; | |
d0d6b7c5 JB |
4071 | |
4072 | return | |
d35af63c | 4073 | (wait_reading_process_output (secs, nsecs, 0, 0, |
214d6069 KS |
4074 | Qnil, |
4075 | !NILP (process) ? XPROCESS (process) : NULL, | |
4076 | NILP (just_this_one) ? 0 : | |
4077 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
4078 | ? Qt : Qnil); |
4079 | } | |
4080 | ||
e690ca94 KS |
4081 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4082 | ||
4083 | static int connect_counter = 0; | |
4084 | ||
4085 | static void | |
d3da34e0 | 4086 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4087 | { |
4088 | Lisp_Object proc, caller, name, buffer; | |
4089 | Lisp_Object contact, host, service; | |
4090 | struct Lisp_Process *ps= XPROCESS (server); | |
4091 | struct Lisp_Process *p; | |
4092 | int s; | |
4093 | union u_sockaddr { | |
4094 | struct sockaddr sa; | |
4095 | struct sockaddr_in in; | |
e1652a86 KS |
4096 | #ifdef AF_INET6 |
4097 | struct sockaddr_in6 in6; | |
4098 | #endif | |
e690ca94 KS |
4099 | #ifdef HAVE_LOCAL_SOCKETS |
4100 | struct sockaddr_un un; | |
4101 | #endif | |
4102 | } saddr; | |
401bf9b4 | 4103 | socklen_t len = sizeof saddr; |
e690ca94 KS |
4104 | |
4105 | s = accept (channel, &saddr.sa, &len); | |
4106 | ||
4107 | if (s < 0) | |
4108 | { | |
4109 | int code = errno; | |
4110 | ||
4111 | if (code == EAGAIN) | |
4112 | return; | |
4113 | #ifdef EWOULDBLOCK | |
4114 | if (code == EWOULDBLOCK) | |
4115 | return; | |
4116 | #endif | |
4117 | ||
4d2b044c DA |
4118 | if (!NILP (ps->log)) |
4119 | call3 (ps->log, server, Qnil, | |
e690ca94 KS |
4120 | concat3 (build_string ("accept failed with code"), |
4121 | Fnumber_to_string (make_number (code)), | |
4122 | build_string ("\n"))); | |
4123 | return; | |
4124 | } | |
4125 | ||
4126 | connect_counter++; | |
4127 | ||
4128 | /* Setup a new process to handle the connection. */ | |
4129 | ||
4130 | /* Generate a unique identification of the caller, and build contact | |
4131 | information for this process. */ | |
4132 | host = Qt; | |
4133 | service = Qnil; | |
4134 | switch (saddr.sa.sa_family) | |
4135 | { | |
4136 | case AF_INET: | |
4137 | { | |
4138 | Lisp_Object args[5]; | |
4139 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4140 | args[0] = build_string ("%d.%d.%d.%d"); | |
4141 | args[1] = make_number (*ip++); | |
4142 | args[2] = make_number (*ip++); | |
4143 | args[3] = make_number (*ip++); | |
4144 | args[4] = make_number (*ip++); | |
4145 | host = Fformat (5, args); | |
4146 | service = make_number (ntohs (saddr.in.sin_port)); | |
4147 | ||
4148 | args[0] = build_string (" <%s:%d>"); | |
4149 | args[1] = host; | |
4150 | args[2] = service; | |
4151 | caller = Fformat (3, args); | |
4152 | } | |
4153 | break; | |
4154 | ||
e1652a86 KS |
4155 | #ifdef AF_INET6 |
4156 | case AF_INET6: | |
4157 | { | |
4158 | Lisp_Object args[9]; | |
4159 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4160 | int i; | |
4161 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4162 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4163 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4164 | host = Fformat (9, args); |
4165 | service = make_number (ntohs (saddr.in.sin_port)); | |
4166 | ||
4167 | args[0] = build_string (" <[%s]:%d>"); | |
4168 | args[1] = host; | |
4169 | args[2] = service; | |
4170 | caller = Fformat (3, args); | |
4171 | } | |
4172 | break; | |
4173 | #endif | |
4174 | ||
e690ca94 KS |
4175 | #ifdef HAVE_LOCAL_SOCKETS |
4176 | case AF_LOCAL: | |
4177 | #endif | |
4178 | default: | |
4179 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4180 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4181 | break; |
4182 | } | |
4183 | ||
4184 | /* Create a new buffer name for this process if it doesn't have a | |
4185 | filter. The new buffer name is based on the buffer name or | |
4186 | process name of the server process concatenated with the caller | |
4187 | identification. */ | |
4188 | ||
4d2b044c | 4189 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) |
e690ca94 KS |
4190 | buffer = Qnil; |
4191 | else | |
4192 | { | |
4d2b044c | 4193 | buffer = ps->buffer; |
e690ca94 KS |
4194 | if (!NILP (buffer)) |
4195 | buffer = Fbuffer_name (buffer); | |
4196 | else | |
4d2b044c | 4197 | buffer = ps->name; |
e690ca94 KS |
4198 | if (!NILP (buffer)) |
4199 | { | |
4200 | buffer = concat2 (buffer, caller); | |
4201 | buffer = Fget_buffer_create (buffer); | |
4202 | } | |
4203 | } | |
4204 | ||
4205 | /* Generate a unique name for the new server process. Combine the | |
4206 | server process name with the caller identification. */ | |
4207 | ||
4d2b044c | 4208 | name = concat2 (ps->name, caller); |
e690ca94 KS |
4209 | proc = make_process (name); |
4210 | ||
4211 | chan_process[s] = proc; | |
4212 | ||
4213 | #ifdef O_NONBLOCK | |
4214 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4215 | #else | |
4216 | #ifdef O_NDELAY | |
4217 | fcntl (s, F_SETFL, O_NDELAY); | |
4218 | #endif | |
4219 | #endif | |
4220 | ||
4221 | p = XPROCESS (proc); | |
4222 | ||
4223 | /* Build new contact information for this setup. */ | |
4d2b044c | 4224 | contact = Fcopy_sequence (ps->childp); |
e690ca94 KS |
4225 | contact = Fplist_put (contact, QCserver, Qnil); |
4226 | contact = Fplist_put (contact, QChost, host); | |
4227 | if (!NILP (service)) | |
4228 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4229 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4230 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4231 | #ifdef HAVE_GETSOCKNAME | |
4232 | len = sizeof saddr; | |
2185db04 | 4233 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4234 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4235 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4236 | #endif | |
4237 | ||
6a09a33b PE |
4238 | pset_childp (p, contact); |
4239 | pset_plist (p, Fcopy_sequence (ps->plist)); | |
4240 | pset_type (p, Qnetwork); | |
ac4a7584 | 4241 | |
6a09a33b PE |
4242 | pset_buffer (p, buffer); |
4243 | pset_sentinel (p, ps->sentinel); | |
4244 | pset_filter (p, ps->filter); | |
4245 | pset_command (p, Qnil); | |
6bfd98e7 | 4246 | p->pid = 0; |
60f0fb11 SM |
4247 | p->infd = s; |
4248 | p->outfd = s; | |
6a09a33b | 4249 | pset_status (p, Qrun); |
e690ca94 KS |
4250 | |
4251 | /* Client processes for accepted connections are not stopped initially. */ | |
4d2b044c | 4252 | if (!EQ (p->filter, Qt)) |
e690ca94 KS |
4253 | { |
4254 | FD_SET (s, &input_wait_mask); | |
4255 | FD_SET (s, &non_keyboard_wait_mask); | |
4256 | } | |
4257 | ||
4258 | if (s > max_process_desc) | |
4259 | max_process_desc = s; | |
4260 | ||
177c0ea7 | 4261 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4262 | This seems to be the proper thing to do, as the coding system |
4263 | of the new process should reflect the settings at the time the | |
4264 | server socket was opened; not the current settings. */ | |
4265 | ||
6a09a33b PE |
4266 | pset_decode_coding_system (p, ps->decode_coding_system); |
4267 | pset_encode_coding_system (p, ps->encode_coding_system); | |
03f04413 | 4268 | setup_process_coding_systems (proc); |
e690ca94 | 4269 | |
6a09a33b | 4270 | pset_decoding_buf (p, empty_unibyte_string); |
60f0fb11 | 4271 | p->decoding_carryover = 0; |
6a09a33b | 4272 | pset_encoding_buf (p, empty_unibyte_string); |
e690ca94 KS |
4273 | |
4274 | p->inherit_coding_system_flag | |
60f0fb11 | 4275 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 | 4276 | |
4d2b044c DA |
4277 | if (!NILP (ps->log)) |
4278 | call3 (ps->log, server, proc, | |
e690ca94 KS |
4279 | concat3 (build_string ("accept from "), |
4280 | (STRINGP (host) ? host : build_string ("-")), | |
4281 | build_string ("\n"))); | |
4282 | ||
4d2b044c | 4283 | if (!NILP (p->sentinel)) |
177c0ea7 | 4284 | exec_sentinel (proc, |
e690ca94 KS |
4285 | concat3 (build_string ("open from "), |
4286 | (STRINGP (host) ? host : build_string ("-")), | |
4287 | build_string ("\n"))); | |
4288 | } | |
4289 | ||
d0d6b7c5 JB |
4290 | /* This variable is different from waiting_for_input in keyboard.c. |
4291 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4292 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4293 | for user-input when that process-filter was called. |
4294 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4295 | lisp code is being evalled. |
4296 | This is also used in record_asynch_buffer_change. | |
4297 | For that purpose, this must be 0 | |
214d6069 | 4298 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4299 | static int waiting_for_user_input_p; |
4300 | ||
2beb96f9 | 4301 | static Lisp_Object |
d3da34e0 | 4302 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4303 | { |
4304 | waiting_for_user_input_p = XINT (data); | |
4305 | return Qnil; | |
4306 | } | |
4307 | ||
c573ae8e | 4308 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4309 | static void |
d3da34e0 | 4310 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4311 | { |
4312 | } | |
4313 | ||
d0d6b7c5 JB |
4314 | /* Read and dispose of subprocess output while waiting for timeout to |
4315 | elapse and/or keyboard input to be available. | |
4316 | ||
de6fd4b9 | 4317 | TIME_LIMIT is: |
d35af63c PE |
4318 | timeout in seconds |
4319 | If negative, gobble data immediately available but don't wait for any. | |
d0d6b7c5 | 4320 | |
d35af63c PE |
4321 | NSECS is: |
4322 | an additional duration to wait, measured in nanoseconds | |
4323 | If TIME_LIMIT is zero, then: | |
4324 | If NSECS == 0, there is no limit. | |
d188e26b | 4325 | If NSECS > 0, the timeout consists of NSECS only. |
d35af63c | 4326 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
6e4f3667 | 4327 | |
a0bee46f | 4328 | READ_KBD is: |
d0d6b7c5 JB |
4329 | 0 to ignore keyboard input, or |
4330 | 1 to return when input is available, or | |
84aa3ace | 4331 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4332 | the quit handler, or |
d0d6b7c5 | 4333 | |
de6fd4b9 | 4334 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4335 | output that arrives. |
d0d6b7c5 | 4336 | |
b89a415a KS |
4337 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4338 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4339 | |
b89a415a | 4340 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4341 | process. The return value is true if we read some input from |
b89a415a KS |
4342 | that process. |
4343 | ||
4344 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4345 | (suspending output from other processes). A negative value | |
4346 | means don't run any timers either. | |
4347 | ||
e0f24100 | 4348 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4349 | received input from that process before the timeout elapsed. |
e0f24100 | 4350 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4351 | |
dfcf069d | 4352 | int |
d35af63c | 4353 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
d5a3eaaf AS |
4354 | int do_display, |
4355 | Lisp_Object wait_for_cell, | |
4356 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4357 | { |
41d03b9a | 4358 | register int channel, nfds; |
855448dc | 4359 | SELECT_TYPE Available; |
3fad2ad2 J |
4360 | SELECT_TYPE Writeok; |
4361 | int check_write; | |
bad49fc7 | 4362 | int check_delay, no_avail; |
d0d6b7c5 JB |
4363 | int xerrno; |
4364 | Lisp_Object proc; | |
41d03b9a | 4365 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4366 | int wait_channel = -1; |
d0d6b7c5 | 4367 | int got_some_input = 0; |
d311d28c | 4368 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4369 | |
4370 | FD_ZERO (&Available); | |
3fad2ad2 | 4371 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4372 | |
d35af63c | 4373 | if (time_limit == 0 && nsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
4d2b044c DA |
4374 | && !(CONSP (wait_proc->status) |
4375 | && EQ (XCAR (wait_proc->status), Qexit))) | |
2b0a91e7 SM |
4376 | message ("Blocking call to accept-process-output with quit inhibited!!"); |
4377 | ||
b89a415a KS |
4378 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4379 | if (wait_proc != NULL) | |
60f0fb11 | 4380 | wait_channel = wait_proc->infd; |
84aa3ace | 4381 | |
2beb96f9 KS |
4382 | record_unwind_protect (wait_reading_process_output_unwind, |
4383 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4384 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 | 4385 | |
d35af63c PE |
4386 | if (time_limit < 0) |
4387 | { | |
4388 | time_limit = 0; | |
4389 | nsecs = -1; | |
4390 | } | |
4391 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
4392 | time_limit = TYPE_MAXIMUM (time_t); | |
4393 | ||
d0d6b7c5 JB |
4394 | /* Since we may need to wait several times, |
4395 | compute the absolute time to return at. */ | |
216ee680 | 4396 | if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4397 | { |
e9a9ae03 PE |
4398 | timeout = make_emacs_time (time_limit, nsecs); |
4399 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
d0d6b7c5 JB |
4400 | } |
4401 | ||
d0d6b7c5 JB |
4402 | while (1) |
4403 | { | |
c0239a0b RS |
4404 | int timeout_reduced_for_timers = 0; |
4405 | ||
d0d6b7c5 JB |
4406 | /* If calling from keyboard input, do not quit |
4407 | since we want to return C-g as an input character. | |
4408 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4409 | if (read_kbd >= 0) |
d0d6b7c5 | 4410 | QUIT; |
6b61353c | 4411 | #ifdef SYNC_INPUT |
ef5eb925 | 4412 | else |
c3eff1b0 | 4413 | process_pending_signals (); |
6b61353c | 4414 | #endif |
d0d6b7c5 | 4415 | |
889255b4 | 4416 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4417 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4418 | break; |
4419 | ||
d0d6b7c5 JB |
4420 | /* Compute time from now till when time limit is up */ |
4421 | /* Exit if already run out */ | |
d35af63c | 4422 | if (nsecs < 0) |
d0d6b7c5 | 4423 | { |
216ee680 | 4424 | /* A negative timeout means |
d0d6b7c5 JB |
4425 | gobble output available now |
4426 | but don't wait at all. */ | |
4427 | ||
e9a9ae03 | 4428 | timeout = make_emacs_time (0, 0); |
d0d6b7c5 | 4429 | } |
216ee680 | 4430 | else if (time_limit || 0 < nsecs) |
d0d6b7c5 | 4431 | { |
e9a9ae03 PE |
4432 | EMACS_TIME now = current_emacs_time (); |
4433 | if (EMACS_TIME_LE (end_time, now)) | |
d0d6b7c5 | 4434 | break; |
e9a9ae03 | 4435 | timeout = sub_emacs_time (end_time, now); |
d0d6b7c5 JB |
4436 | } |
4437 | else | |
4438 | { | |
e9a9ae03 | 4439 | timeout = make_emacs_time (100000, 0); |
d0d6b7c5 JB |
4440 | } |
4441 | ||
f854a00b RS |
4442 | /* Normally we run timers here. |
4443 | But not if wait_for_cell; in those cases, | |
4444 | the wait is supposed to be short, | |
4445 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4446 | if (NILP (wait_for_cell) |
b89a415a | 4447 | && just_wait_proc >= 0) |
fb4c3627 | 4448 | { |
c0239a0b | 4449 | EMACS_TIME timer_delay; |
c573ae8e | 4450 | |
9baacf76 | 4451 | do |
c573ae8e | 4452 | { |
9baacf76 | 4453 | int old_timers_run = timers_run; |
c88164fe | 4454 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4455 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4456 | |
f868cd8a | 4457 | timer_delay = timer_check (); |
a2fab450 GM |
4458 | |
4459 | /* If a timer has run, this might have changed buffers | |
4460 | an alike. Make read_key_sequence aware of that. */ | |
4461 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4462 | && (old_buffer != current_buffer |
4463 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4464 | && waiting_for_user_input_p == -1) |
4465 | record_asynch_buffer_change (); | |
177c0ea7 | 4466 | |
9baacf76 GM |
4467 | if (timers_run != old_timers_run && do_display) |
4468 | /* We must retry, since a timer may have requeued itself | |
4469 | and that could alter the time_delay. */ | |
3007ebfb | 4470 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4471 | else |
4472 | break; | |
c573ae8e | 4473 | } |
9baacf76 | 4474 | while (!detect_input_pending ()); |
c573ae8e | 4475 | |
69645afc | 4476 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4477 | if (read_kbd != 0 |
69645afc RS |
4478 | && requeued_events_pending_p ()) |
4479 | break; | |
4480 | ||
216ee680 | 4481 | /* A negative timeout means do not wait at all. */ |
d35af63c | 4482 | if (0 <= nsecs) |
fb4c3627 | 4483 | { |
d35af63c | 4484 | if (EMACS_TIME_VALID_P (timer_delay)) |
c0239a0b | 4485 | { |
d35af63c PE |
4486 | if (EMACS_TIME_LT (timer_delay, timeout)) |
4487 | { | |
4488 | timeout = timer_delay; | |
4489 | timeout_reduced_for_timers = 1; | |
4490 | } | |
4491 | } | |
4492 | else | |
4493 | { | |
4494 | /* This is so a breakpoint can be put here. */ | |
4495 | wait_reading_process_output_1 (); | |
c0239a0b | 4496 | } |
c573ae8e | 4497 | } |
fb4c3627 RS |
4498 | } |
4499 | ||
90ab1a81 JB |
4500 | /* Cause C-g and alarm signals to take immediate action, |
4501 | and cause input available signals to zero out timeout. | |
4502 | ||
4503 | It is important that we do this before checking for process | |
4504 | activity. If we get a SIGCHLD after the explicit checks for | |
4505 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4506 | if (read_kbd < 0) |
90ab1a81 JB |
4507 | set_waiting_for_input (&timeout); |
4508 | ||
6be429b1 JB |
4509 | /* If status of something has changed, and no input is |
4510 | available, notify the user of the change right away. After | |
4511 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4512 | timeout to get our attention. */ |
4513 | if (update_tick != process_tick) | |
6be429b1 | 4514 | { |
bad49fc7 | 4515 | SELECT_TYPE Atemp; |
bad49fc7 | 4516 | SELECT_TYPE Ctemp; |
dd2a17ab | 4517 | |
cb768704 J |
4518 | if (kbd_on_hold_p ()) |
4519 | FD_ZERO (&Atemp); | |
4520 | else | |
4521 | Atemp = input_wait_mask; | |
3fad2ad2 | 4522 | Ctemp = write_mask; |
bad49fc7 | 4523 | |
e9a9ae03 | 4524 | timeout = make_emacs_time (0, 0); |
d35af63c PE |
4525 | if ((pselect (max (max_process_desc, max_input_desc) + 1, |
4526 | &Atemp, | |
bad49fc7 | 4527 | #ifdef NON_BLOCKING_CONNECT |
d35af63c | 4528 | (num_pending_connects > 0 ? &Ctemp : NULL), |
bad49fc7 | 4529 | #else |
d35af63c | 4530 | NULL, |
bad49fc7 | 4531 | #endif |
d35af63c | 4532 | NULL, &timeout, NULL) |
ecd1f654 | 4533 | <= 0)) |
90ab1a81 JB |
4534 | { |
4535 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4536 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4537 | clear_waiting_for_input (); |
ff6daed3 | 4538 | status_notify (NULL); |
e42bdf01 | 4539 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4540 | } |
6be429b1 JB |
4541 | } |
4542 | ||
dd2a17ab | 4543 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4544 | read whatever data has already been received. */ |
6bfd98e7 | 4545 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4546 | update_status (wait_proc); |
6bfd98e7 | 4547 | if (wait_proc |
4d2b044c DA |
4548 | && ! EQ (wait_proc->status, Qrun) |
4549 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4550 | { |
215b45e9 | 4551 | int nread, total_nread = 0; |
7ce63188 | 4552 | |
9aa2a7f4 | 4553 | clear_waiting_for_input (); |
7ce63188 RS |
4554 | XSETPROCESS (proc, wait_proc); |
4555 | ||
4556 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4557 | while (wait_proc->infd >= 0) |
215b45e9 | 4558 | { |
60f0fb11 | 4559 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4560 | |
4561 | if (nread == 0) | |
4562 | break; | |
4563 | ||
63136da6 AS |
4564 | if (0 < nread) |
4565 | { | |
891bd142 SM |
4566 | total_nread += nread; |
4567 | got_some_input = 1; | |
4568 | } | |
215b45e9 RS |
4569 | #ifdef EIO |
4570 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4571 | break; |
e1b37c34 GM |
4572 | #endif |
4573 | #ifdef EAGAIN | |
4574 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4575 | break; |
e1b37c34 GM |
4576 | #endif |
4577 | #ifdef EWOULDBLOCK | |
4578 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4579 | break; |
215b45e9 RS |
4580 | #endif |
4581 | } | |
7ce63188 | 4582 | if (total_nread > 0 && do_display) |
3007ebfb | 4583 | redisplay_preserve_echo_area (10); |
7ce63188 | 4584 | |
9aa2a7f4 JB |
4585 | break; |
4586 | } | |
6be429b1 | 4587 | |
d0d6b7c5 JB |
4588 | /* Wait till there is something to do */ |
4589 | ||
b89a415a | 4590 | if (wait_proc && just_wait_proc) |
107ed38d | 4591 | { |
60f0fb11 | 4592 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4593 | break; |
60f0fb11 | 4594 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4595 | check_delay = 0; |
3fad2ad2 | 4596 | check_write = 0; |
107ed38d KS |
4597 | } |
4598 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4599 | { |
4600 | Available = non_process_wait_mask; | |
bad49fc7 | 4601 | check_delay = 0; |
3fad2ad2 | 4602 | check_write = 0; |
dd2a17ab | 4603 | } |
a69281ff | 4604 | else |
dd2a17ab | 4605 | { |
b89a415a | 4606 | if (! read_kbd) |
dd2a17ab KS |
4607 | Available = non_keyboard_wait_mask; |
4608 | else | |
4609 | Available = input_wait_mask; | |
3fad2ad2 | 4610 | Writeok = write_mask; |
82d6e50b J |
4611 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4612 | check_write = 0; | |
4613 | #else | |
3fad2ad2 | 4614 | check_write = 1; |
82d6e50b | 4615 | #endif |
6b61353c | 4616 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4617 | } |
d0d6b7c5 | 4618 | |
ff11dfa1 | 4619 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4620 | redisplay now, before we start to wait. There is a race |
4621 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4622 | and indicates that a frame is trashed, the select may block |
4623 | displaying a trashed screen. */ | |
5164ee8e | 4624 | if (frame_garbaged && do_display) |
7286affd RS |
4625 | { |
4626 | clear_waiting_for_input (); | |
3007ebfb | 4627 | redisplay_preserve_echo_area (11); |
b89a415a | 4628 | if (read_kbd < 0) |
7efe788e | 4629 | set_waiting_for_input (&timeout); |
7286affd | 4630 | } |
ffd56f97 | 4631 | |
029529ac CY |
4632 | /* Skip the `select' call if input is available and we're |
4633 | waiting for keyboard input or a cell change (which can be | |
4634 | triggered by processing X events). In the latter case, set | |
4635 | nfds to 1 to avoid breaking the loop. */ | |
dd2a17ab | 4636 | no_avail = 0; |
029529ac CY |
4637 | if ((read_kbd || !NILP (wait_for_cell)) |
4638 | && detect_input_pending ()) | |
0a65b032 | 4639 | { |
029529ac | 4640 | nfds = read_kbd ? 0 : 1; |
dd2a17ab | 4641 | no_avail = 1; |
0a65b032 | 4642 | } |
029529ac CY |
4643 | |
4644 | if (!no_avail) | |
dd2a17ab | 4645 | { |
6b61353c KH |
4646 | |
4647 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4648 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4649 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4650 | read_output_delay, and we are not reading output for a |
4651 | specific wait_channel. It is not executed if | |
4652 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4653 | if (process_output_skip && check_delay > 0) |
4654 | { | |
d35af63c PE |
4655 | int nsecs = EMACS_NSECS (timeout); |
4656 | if (EMACS_SECS (timeout) > 0 || nsecs > READ_OUTPUT_DELAY_MAX) | |
4657 | nsecs = READ_OUTPUT_DELAY_MAX; | |
6b61353c KH |
4658 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) |
4659 | { | |
4660 | proc = chan_process[channel]; | |
4661 | if (NILP (proc)) | |
4662 | continue; | |
db853b7a | 4663 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4664 | processes with non-zero read_output_skip. */ |
4665 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4666 | { |
4667 | check_delay--; | |
60f0fb11 | 4668 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4669 | continue; |
4670 | FD_CLR (channel, &Available); | |
60f0fb11 | 4671 | XPROCESS (proc)->read_output_skip = 0; |
d35af63c PE |
4672 | if (XPROCESS (proc)->read_output_delay < nsecs) |
4673 | nsecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4674 | } |
4675 | } | |
e9a9ae03 | 4676 | timeout = make_emacs_time (0, nsecs); |
6b61353c KH |
4677 | process_output_skip = 0; |
4678 | } | |
4679 | #endif | |
0949d2b6 | 4680 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 JD |
4681 | nfds = xg_select |
4682 | #elif defined (HAVE_NS) | |
63136da6 | 4683 | nfds = ns_select |
edfda783 | 4684 | #else |
d35af63c | 4685 | nfds = pselect |
edfda783 | 4686 | #endif |
3fad2ad2 J |
4687 | (max (max_process_desc, max_input_desc) + 1, |
4688 | &Available, | |
4689 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
d35af63c | 4690 | NULL, &timeout, NULL); |
e061a11b TZ |
4691 | |
4692 | #ifdef HAVE_GNUTLS | |
4693 | /* GnuTLS buffers data internally. In lowat mode it leaves | |
4694 | some data in the TCP buffers so that select works, but | |
4695 | with custom pull/push functions we need to check if some | |
4696 | data is available in the buffers manually. */ | |
261b6fd4 LMI |
4697 | if (nfds == 0) |
4698 | { | |
4699 | if (! wait_proc) | |
4700 | { | |
4701 | /* We're not waiting on a specific process, so loop | |
16c1ad08 LMI |
4702 | through all the channels and check for data. |
4703 | This is a workaround needed for some versions of | |
4704 | the gnutls library -- 2.12.14 has been confirmed | |
4705 | to need it. See | |
4706 | http://comments.gmane.org/gmane.emacs.devel/145074 */ | |
261b6fd4 | 4707 | for (channel = 0; channel < MAXDESC; ++channel) |
5b76caa4 PE |
4708 | if (! NILP (chan_process[channel])) |
4709 | { | |
4710 | struct Lisp_Process *p = | |
4711 | XPROCESS (chan_process[channel]); | |
4712 | if (p && p->gnutls_p && p->infd | |
4713 | && ((emacs_gnutls_record_check_pending | |
4714 | (p->gnutls_state)) | |
4715 | > 0)) | |
4716 | { | |
4717 | nfds++; | |
4718 | FD_SET (p->infd, &Available); | |
4719 | } | |
4720 | } | |
261b6fd4 LMI |
4721 | } |
4722 | else | |
4723 | { | |
4724 | /* Check this specific channel. */ | |
5b76caa4 | 4725 | if (wait_proc->gnutls_p /* Check for valid process. */ |
261b6fd4 | 4726 | /* Do we have pending data? */ |
5b76caa4 PE |
4727 | && ((emacs_gnutls_record_check_pending |
4728 | (wait_proc->gnutls_state)) | |
4729 | > 0)) | |
261b6fd4 LMI |
4730 | { |
4731 | nfds = 1; | |
4732 | /* Set to Available. */ | |
4733 | FD_SET (wait_proc->infd, &Available); | |
4734 | } | |
4735 | } | |
4736 | } | |
e061a11b | 4737 | #endif |
dd2a17ab | 4738 | } |
6720a7fb | 4739 | |
d0d6b7c5 JB |
4740 | xerrno = errno; |
4741 | ||
4742 | /* Make C-g and alarm signals set flags again */ | |
4743 | clear_waiting_for_input (); | |
4744 | ||
4745 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4746 | do_pending_window_change (0); |
d0d6b7c5 | 4747 | |
d35af63c | 4748 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
216ee680 | 4749 | /* We waited the full specified time, so return now. */ |
d0d6b7c5 JB |
4750 | break; |
4751 | if (nfds < 0) | |
4752 | { | |
4753 | if (xerrno == EINTR) | |
dd2a17ab | 4754 | no_avail = 1; |
d0d6b7c5 JB |
4755 | else if (xerrno == EBADF) |
4756 | { | |
4757 | #ifdef AIX | |
4758 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4759 | the child's closure of the pts gives the parent a SIGHUP, and | |
4760 | the ptc file descriptor is automatically closed, | |
4761 | yielding EBADF here or at select() call above. | |
4762 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4763 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4764 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4765 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4766 | #else |
4767 | abort (); | |
4768 | #endif | |
4769 | } | |
4770 | else | |
68c45bf0 | 4771 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4772 | } |
dd2a17ab KS |
4773 | |
4774 | if (no_avail) | |
4775 | { | |
4776 | FD_ZERO (&Available); | |
3fad2ad2 | 4777 | check_write = 0; |
dd2a17ab KS |
4778 | } |
4779 | ||
5d5beb62 RS |
4780 | #if 0 /* When polling is used, interrupt_input is 0, |
4781 | so get_input_pending should read the input. | |
4782 | So this should not be needed. */ | |
4783 | /* If we are using polling for input, | |
4784 | and we see input available, make it get read now. | |
4785 | Otherwise it might not actually get read for a second. | |
214d6069 | 4786 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4787 | it might never get read at all if we don't spend much time |
214d6069 | 4788 | outside of wait_reading_process_output. */ |
b89a415a | 4789 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4790 | && keyboard_bit_set (&Available) |
4791 | && input_polling_used ()) | |
4792 | kill (getpid (), SIGALRM); | |
4793 | #endif | |
4794 | ||
d0d6b7c5 JB |
4795 | /* Check for keyboard input */ |
4796 | /* If there is any, return immediately | |
4797 | to give it higher priority than subprocesses */ | |
4798 | ||
b89a415a | 4799 | if (read_kbd != 0) |
6ed6233b | 4800 | { |
a2fab450 | 4801 | int old_timers_run = timers_run; |
c88164fe | 4802 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4803 | Lisp_Object old_window = selected_window; |
a2fab450 | 4804 | int leave = 0; |
177c0ea7 | 4805 | |
5d6c2aa3 | 4806 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4807 | { |
4808 | swallow_events (do_display); | |
4809 | if (detect_input_pending_run_timers (do_display)) | |
4810 | leave = 1; | |
4811 | } | |
6ed6233b | 4812 | |
a2fab450 GM |
4813 | /* If a timer has run, this might have changed buffers |
4814 | an alike. Make read_key_sequence aware of that. */ | |
4815 | if (timers_run != old_timers_run | |
c88164fe | 4816 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4817 | && (old_buffer != current_buffer |
4818 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4819 | record_asynch_buffer_change (); |
4820 | ||
4821 | if (leave) | |
4822 | break; | |
177c0ea7 JB |
4823 | } |
4824 | ||
69645afc | 4825 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4826 | if (read_kbd != 0 |
69645afc RS |
4827 | && requeued_events_pending_p ()) |
4828 | break; | |
4829 | ||
77e1b3d4 RS |
4830 | /* If we are not checking for keyboard input now, |
4831 | do process events (but don't run any timers). | |
4832 | This is so that X events will be processed. | |
0c9960e9 | 4833 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4834 | That would causes delays in pasting selections, for example. |
4835 | ||
4836 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4837 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4838 | { |
4839 | swallow_events (do_display); | |
0c9960e9 | 4840 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4841 | if (detect_input_pending ()) |
4842 | break; | |
5d5beb62 | 4843 | #endif |
0c9960e9 | 4844 | } |
f854a00b | 4845 | |
84aa3ace | 4846 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4847 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4848 | break; |
4849 | ||
4746118a | 4850 | #ifdef SIGIO |
5d5beb62 | 4851 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4852 | go read it. This can happen with X on BSD after logging out. |
4853 | In that case, there really is no input and no SIGIO, | |
4854 | but select says there is input. */ | |
4855 | ||
b89a415a | 4856 | if (read_kbd && interrupt_input |
2601f59e | 4857 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4858 | kill (getpid (), SIGIO); |
4746118a | 4859 | #endif |
d0d6b7c5 | 4860 | |
d0d6b7c5 JB |
4861 | if (! wait_proc) |
4862 | got_some_input |= nfds > 0; | |
4863 | ||
32676c08 JB |
4864 | /* If checking input just got us a size-change event from X, |
4865 | obey it now if we should. */ | |
b89a415a | 4866 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4867 | do_pending_window_change (0); |
32676c08 | 4868 | |
a9f2c884 | 4869 | /* Check for data from a process. */ |
dd2a17ab KS |
4870 | if (no_avail || nfds == 0) |
4871 | continue; | |
4872 | ||
3fad2ad2 J |
4873 | for (channel = 0; channel <= max_input_desc; ++channel) |
4874 | { | |
4875 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
4876 | if (FD_ISSET (channel, &Available) | |
4877 | && d->func != 0 | |
4878 | && (d->condition & FOR_READ) != 0) | |
4879 | d->func (channel, d->data, 1); | |
4880 | if (FD_ISSET (channel, &write_mask) | |
4881 | && d->func != 0 | |
4882 | && (d->condition & FOR_WRITE) != 0) | |
4883 | d->func (channel, d->data, 0); | |
4884 | } | |
4885 | ||
a69281ff | 4886 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4887 | { |
a69281ff | 4888 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4889 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4890 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4891 | { |
4892 | int nread; | |
4893 | ||
4894 | /* If waiting for this channel, arrange to return as | |
4895 | soon as no more input to be processed. No more | |
4896 | waiting. */ | |
4897 | if (wait_channel == channel) | |
4898 | { | |
a9f2c884 | 4899 | wait_channel = -1; |
d35af63c | 4900 | nsecs = -1; |
d0d6b7c5 JB |
4901 | got_some_input = 1; |
4902 | } | |
4903 | proc = chan_process[channel]; | |
4904 | if (NILP (proc)) | |
4905 | continue; | |
4906 | ||
e690ca94 | 4907 | /* If this is a server stream socket, accept connection. */ |
4d2b044c | 4908 | if (EQ (XPROCESS (proc)->status, Qlisten)) |
e690ca94 KS |
4909 | { |
4910 | server_accept_connection (proc, channel); | |
4911 | continue; | |
4912 | } | |
4913 | ||
d0d6b7c5 JB |
4914 | /* Read data from the process, starting with our |
4915 | buffered-ahead character if we have one. */ | |
4916 | ||
4917 | nread = read_process_output (proc, channel); | |
4918 | if (nread > 0) | |
4919 | { | |
4920 | /* Since read_process_output can run a filter, | |
4921 | which can call accept-process-output, | |
4922 | don't try to read from any other processes | |
4923 | before doing the select again. */ | |
4924 | FD_ZERO (&Available); | |
4925 | ||
4926 | if (do_display) | |
3007ebfb | 4927 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4928 | } |
4929 | #ifdef EWOULDBLOCK | |
4930 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4931 | ; | |
0b75e9a4 | 4932 | #endif |
89d7280d RS |
4933 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4934 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4935 | #ifdef O_NONBLOCK |
4936 | else if (nread == -1 && errno == EAGAIN) | |
4937 | ; | |
4938 | #else | |
4939 | #ifdef O_NDELAY | |
4940 | else if (nread == -1 && errno == EAGAIN) | |
4941 | ; | |
4942 | /* Note that we cannot distinguish between no input | |
4943 | available now and a closed pipe. | |
4944 | With luck, a closed pipe will be accompanied by | |
4945 | subprocess termination and SIGCHLD. */ | |
d888760c | 4946 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4947 | ; |
4740825c KS |
4948 | #endif /* O_NDELAY */ |
4949 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4950 | #ifdef HAVE_PTYS |
4951 | /* On some OSs with ptys, when the process on one end of | |
4952 | a pty exits, the other end gets an error reading with | |
4953 | errno = EIO instead of getting an EOF (0 bytes read). | |
4954 | Therefore, if we get an error reading and errno = | |
4955 | EIO, just continue, because the child process has | |
4956 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4957 | get a SIGCHLD). |
4958 | ||
4959 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4960 | got lost. So raise the signal again just in case. |
5651af6d | 4961 | It can't hurt. */ |
d0d6b7c5 | 4962 | else if (nread == -1 && errno == EIO) |
4740825c | 4963 | { |
f30d612a CY |
4964 | struct Lisp_Process *p = XPROCESS (proc); |
4965 | ||
4966 | /* Clear the descriptor now, so we only raise the | |
4967 | signal once. */ | |
4968 | FD_CLR (channel, &input_wait_mask); | |
4969 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4970 | ||
4971 | if (p->pid == -2) | |
4972 | { | |
4973 | /* If the EIO occurs on a pty, sigchld_handler's | |
13294f95 | 4974 | waitpid() will not find the process object to |
f30d612a CY |
4975 | delete. Do it here. */ |
4976 | p->tick = ++process_tick; | |
6a09a33b | 4977 | pset_status (p, Qfailed); |
f30d612a CY |
4978 | } |
4979 | else | |
4980 | kill (getpid (), SIGCHLD); | |
4740825c KS |
4981 | } |
4982 | #endif /* HAVE_PTYS */ | |
5063c0e1 TN |
4983 | /* If we can detect process termination, don't consider the |
4984 | process gone just because its pipe is closed. */ | |
d0d6b7c5 | 4985 | #ifdef SIGCHLD |
d888760c | 4986 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4987 | ; |
4988 | #endif | |
4989 | else | |
4990 | { | |
4991 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4992 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4993 | deactivate_process (proc); |
6bfd98e7 | 4994 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 | 4995 | update_status (XPROCESS (proc)); |
4d2b044c | 4996 | if (EQ (XPROCESS (proc)->status, Qrun)) |
6a09a33b PE |
4997 | pset_status (XPROCESS (proc), |
4998 | list2 (Qexit, make_number (256))); | |
d0d6b7c5 JB |
4999 | } |
5000 | } | |
177c0ea7 | 5001 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 5002 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 5003 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
5004 | { |
5005 | struct Lisp_Process *p; | |
dd2a17ab KS |
5006 | |
5007 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 5008 | FD_CLR (channel, &write_mask); |
dd2a17ab KS |
5009 | if (--num_pending_connects < 0) |
5010 | abort (); | |
5011 | ||
5012 | proc = chan_process[channel]; | |
5013 | if (NILP (proc)) | |
5014 | continue; | |
5015 | ||
5016 | p = XPROCESS (proc); | |
5017 | ||
5018 | #ifdef GNU_LINUX | |
5019 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 5020 | So only use it on systems where it is known to work. */ |
dd2a17ab | 5021 | { |
401bf9b4 | 5022 | socklen_t xlen = sizeof (xerrno); |
ed3751c8 | 5023 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
dd2a17ab KS |
5024 | xerrno = errno; |
5025 | } | |
5026 | #else | |
44c887be PJ |
5027 | { |
5028 | struct sockaddr pname; | |
ed3751c8 | 5029 | int pnamelen = sizeof (pname); |
44c887be PJ |
5030 | |
5031 | /* If connection failed, getpeername will fail. */ | |
5032 | xerrno = 0; | |
ed3751c8 | 5033 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
5034 | { |
5035 | /* Obtain connect failure code through error slippage. */ | |
5036 | char dummy; | |
dd2a17ab | 5037 | xerrno = errno; |
ed3751c8 | 5038 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
5039 | xerrno = errno; |
5040 | } | |
5041 | } | |
dd2a17ab KS |
5042 | #endif |
5043 | if (xerrno) | |
5044 | { | |
60f0fb11 | 5045 | p->tick = ++process_tick; |
6a09a33b | 5046 | pset_status (p, list2 (Qfailed, make_number (xerrno))); |
dd2a17ab KS |
5047 | deactivate_process (proc); |
5048 | } | |
5049 | else | |
5050 | { | |
6a09a33b | 5051 | pset_status (p, Qrun); |
dd2a17ab KS |
5052 | /* Execute the sentinel here. If we had relied on |
5053 | status_notify to do it later, it will read input | |
5054 | from the process before calling the sentinel. */ | |
5055 | exec_sentinel (proc, build_string ("open\n")); | |
4d2b044c | 5056 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 5057 | { |
60f0fb11 SM |
5058 | FD_SET (p->infd, &input_wait_mask); |
5059 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
5060 | } |
5061 | } | |
5062 | } | |
5063 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
5064 | } /* end for each file descriptor */ |
5065 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 5066 | |
2beb96f9 | 5067 | unbind_to (count, Qnil); |
d430ee71 | 5068 | |
ffd56f97 JB |
5069 | /* If calling from keyboard input, do not quit |
5070 | since we want to return C-g as an input character. | |
5071 | Otherwise, do pending quit if requested. */ | |
b89a415a | 5072 | if (read_kbd >= 0) |
ffd56f97 JB |
5073 | { |
5074 | /* Prevent input_pending from remaining set if we quit. */ | |
5075 | clear_input_pending (); | |
5076 | QUIT; | |
5077 | } | |
efa2a55c | 5078 | |
d0d6b7c5 JB |
5079 | return got_some_input; |
5080 | } | |
5081 | \f | |
3b9a3dfa RS |
5082 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
5083 | ||
5084 | static Lisp_Object | |
d3da34e0 | 5085 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5086 | { |
70949dac | 5087 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5088 | } |
5089 | ||
5090 | static Lisp_Object | |
b93aacde | 5091 | read_process_output_error_handler (Lisp_Object error_val) |
3b9a3dfa | 5092 | { |
b93aacde | 5093 | cmd_error_internal (error_val, "error in process filter: "); |
3b9a3dfa RS |
5094 | Vinhibit_quit = Qt; |
5095 | update_echo_area (); | |
833ba342 | 5096 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5097 | return Qt; |
3b9a3dfa RS |
5098 | } |
5099 | ||
d0d6b7c5 JB |
5100 | /* Read pending output from the process channel, |
5101 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5102 | Yield number of decoded characters read. |
d0d6b7c5 | 5103 | |
116c423c | 5104 | This function reads at most 4096 characters. |
d0d6b7c5 | 5105 | If you want to read all available subprocess output, |
0fa1789e KH |
5106 | you must call it repeatedly until it returns zero. |
5107 | ||
5108 | The characters read are decoded according to PROC's coding-system | |
5109 | for decoding. */ | |
d0d6b7c5 | 5110 | |
ff6daed3 | 5111 | static int |
d3da34e0 | 5112 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5113 | { |
368f4090 | 5114 | register ssize_t nbytes; |
d0d6b7c5 | 5115 | char *chars; |
d0d6b7c5 | 5116 | register Lisp_Object outstream; |
d0d6b7c5 | 5117 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 5118 | register ptrdiff_t opoint; |
c7580538 | 5119 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5120 | int carryover = p->decoding_carryover; |
116c423c | 5121 | int readmax = 4096; |
d311d28c | 5122 | ptrdiff_t count = SPECPDL_INDEX (); |
3a4fa2f2 | 5123 | Lisp_Object odeactivate; |
d0d6b7c5 | 5124 | |
38182d90 | 5125 | chars = alloca (carryover + readmax); |
e7fbaa65 KH |
5126 | if (carryover) |
5127 | /* See the comment above. */ | |
4d2b044c | 5128 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5129 | |
e690ca94 KS |
5130 | #ifdef DATAGRAM_SOCKETS |
5131 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5132 | if (DATAGRAM_CHAN_P (channel)) | |
5133 | { | |
401bf9b4 | 5134 | socklen_t len = datagram_address[channel].len; |
39b1da20 | 5135 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5136 | 0, datagram_address[channel].sa, &len); |
5137 | } | |
5138 | else | |
5139 | #endif | |
6b61353c | 5140 | { |
82eaa333 PE |
5141 | int buffered = 0 <= proc_buffered_char[channel]; |
5142 | if (buffered) | |
5143 | { | |
5144 | chars[carryover] = proc_buffered_char[channel]; | |
5145 | proc_buffered_char[channel] = -1; | |
5146 | } | |
8af55556 | 5147 | #ifdef HAVE_GNUTLS |
959ad23f AS |
5148 | if (p->gnutls_p) |
5149 | nbytes = emacs_gnutls_read (p, chars + carryover + buffered, | |
82eaa333 | 5150 | readmax - buffered); |
8af55556 TZ |
5151 | else |
5152 | #endif | |
82eaa333 PE |
5153 | nbytes = emacs_read (channel, chars + carryover + buffered, |
5154 | readmax - buffered); | |
6b61353c | 5155 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5156 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5157 | { |
60f0fb11 | 5158 | int delay = p->read_output_delay; |
6b61353c KH |
5159 | if (nbytes < 256) |
5160 | { | |
5161 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5162 | { | |
5163 | if (delay == 0) | |
5164 | process_output_delay_count++; | |
5165 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5166 | } | |
5167 | } | |
82eaa333 | 5168 | else if (delay > 0 && nbytes == readmax - buffered) |
6b61353c KH |
5169 | { |
5170 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5171 | if (delay == 0) | |
5172 | process_output_delay_count--; | |
5173 | } | |
60f0fb11 | 5174 | p->read_output_delay = delay; |
6b61353c KH |
5175 | if (delay) |
5176 | { | |
60f0fb11 | 5177 | p->read_output_skip = 1; |
6b61353c KH |
5178 | process_output_skip = 1; |
5179 | } | |
5180 | } | |
5181 | #endif | |
fe07cdfa PE |
5182 | nbytes += buffered; |
5183 | nbytes += buffered && nbytes <= 0; | |
d0d6b7c5 | 5184 | } |
d0d6b7c5 | 5185 | |
60f0fb11 | 5186 | p->decoding_carryover = 0; |
ca65341e | 5187 | |
ed7a4b2d | 5188 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5189 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5190 | if (nbytes <= 0) |
5191 | { | |
5192 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5193 | return nbytes; | |
5194 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5195 | } | |
d0d6b7c5 | 5196 | |
1d2fc612 | 5197 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5198 | nbytes += carryover; |
0fa1789e | 5199 | |
3a4fa2f2 SM |
5200 | odeactivate = Vdeactivate_mark; |
5201 | /* There's no good reason to let process filters change the current | |
5202 | buffer, and many callers of accept-process-output, sit-for, and | |
5203 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 5204 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
3a4fa2f2 | 5205 | |
1d2fc612 | 5206 | /* Read and dispose of the process output. */ |
4d2b044c | 5207 | outstream = p->filter; |
d0d6b7c5 JB |
5208 | if (!NILP (outstream)) |
5209 | { | |
1d2fc612 | 5210 | Lisp_Object text; |
4da2f5be | 5211 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5212 | int waiting = waiting_for_user_input_p; |
30c78175 | 5213 | |
dfc21838 RS |
5214 | /* No need to gcpro these, because all we do with them later |
5215 | is test them for EQness, and none of them should be a string. */ | |
aba7731a PE |
5216 | #if 0 |
5217 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 5218 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 5219 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 5220 | #endif |
30c78175 | 5221 | |
3a4fa2f2 SM |
5222 | /* We inhibit quit here instead of just catching it so that |
5223 | hitting ^G when a filter happens to be running won't screw | |
5224 | it up. */ | |
d0d6b7c5 | 5225 | specbind (Qinhibit_quit, Qt); |
6545aada | 5226 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5227 | |
4da2f5be RS |
5228 | /* In case we get recursively called, |
5229 | and we already saved the match data nonrecursively, | |
5230 | save the same match data in safely recursive fashion. */ | |
5231 | if (outer_running_asynch_code) | |
5232 | { | |
5233 | Lisp_Object tem; | |
5234 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5235 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5236 | restore_search_regs (); | |
5237 | record_unwind_save_match_data (); | |
5238 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5239 | } |
5240 | ||
5241 | /* For speed, if a search happens within this code, | |
5242 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5243 | running_asynch_code = 1; |
4da2f5be | 5244 | |
400a67ff | 5245 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 | 5246 | text = coding->dst_object; |
5bbf78c1 | 5247 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5248 | /* A new coding system might be found. */ |
4d2b044c | 5249 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5250 | { |
6a09a33b | 5251 | pset_decode_coding_system (p, Vlast_coding_system_used); |
ed7a4b2d KH |
5252 | |
5253 | /* Don't call setup_coding_system for | |
5254 | proc_decode_coding_system[channel] here. It is done in | |
5255 | detect_coding called via decode_coding above. */ | |
5256 | ||
5257 | /* If a coding system for encoding is not yet decided, we set | |
5258 | it as the same as coding-system for decoding. | |
5259 | ||
5260 | But, before doing that we must check if | |
5261 | proc_encode_coding_system[p->outfd] surely points to a | |
5262 | valid memory because p->outfd will be changed once EOF is | |
5263 | sent to the process. */ | |
4d2b044c | 5264 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5265 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5266 | { |
6a09a33b PE |
5267 | pset_encode_coding_system |
5268 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
4d2b044c | 5269 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5270 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5271 | } |
5272 | } | |
51c6067d | 5273 | |
dd8c7a53 KH |
5274 | if (coding->carryover_bytes > 0) |
5275 | { | |
4d2b044c | 5276 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
6a09a33b | 5277 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5278 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5279 | coding->carryover_bytes); |
8c406a9b | 5280 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5281 | } |
e430e5ba | 5282 | if (SBYTES (text) > 0) |
963b492b SM |
5283 | /* FIXME: It's wrong to wrap or not based on debug-on-error, and |
5284 | sometimes it's simply wrong to wrap (e.g. when called from | |
5285 | accept-process-output). */ | |
dd97db06 KH |
5286 | internal_condition_case_1 (read_process_output_call, |
5287 | Fcons (outstream, | |
5288 | Fcons (proc, Fcons (text, Qnil))), | |
5289 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5290 | read_process_output_error_handler); | |
4da2f5be RS |
5291 | |
5292 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5293 | restore_search_regs (); |
4da2f5be | 5294 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5295 | |
bbce7d72 RS |
5296 | /* Restore waiting_for_user_input_p as it was |
5297 | when we were called, in case the filter clobbered it. */ | |
5298 | waiting_for_user_input_p = waiting; | |
5299 | ||
7973cfa8 RS |
5300 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5301 | because we might have changed minor modes or other things | |
5302 | that affect key bindings. */ | |
dfc21838 RS |
5303 | if (! EQ (Fcurrent_buffer (), obuffer) |
5304 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5305 | #endif |
927e08be RS |
5306 | /* But do it only if the caller is actually going to read events. |
5307 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5308 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5309 | if (waiting_for_user_input_p == -1) |
5310 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5311 | } |
5312 | ||
5313 | /* If no filter, write into buffer if it isn't dead. */ | |
4d2b044c | 5314 | else if (!NILP (p->buffer) && !NILP (BVAR (XBUFFER (p->buffer), name))) |
d0d6b7c5 | 5315 | { |
b0310da4 | 5316 | Lisp_Object old_read_only; |
d311d28c PE |
5317 | ptrdiff_t old_begv, old_zv; |
5318 | ptrdiff_t old_begv_byte, old_zv_byte; | |
5319 | ptrdiff_t before, before_byte; | |
5320 | ptrdiff_t opoint_byte; | |
ed7a4b2d | 5321 | Lisp_Object text; |
926b7e5e | 5322 | struct buffer *b; |
30c78175 | 5323 | |
4d2b044c | 5324 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5325 | opoint = PT; |
d8a2934e | 5326 | opoint_byte = PT_BYTE; |
4b4deea2 | 5327 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5328 | old_begv = BEGV; |
5329 | old_zv = ZV; | |
d8a2934e RS |
5330 | old_begv_byte = BEGV_BYTE; |
5331 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5332 | |
39eb03f1 | 5333 | bset_read_only (current_buffer, Qnil); |
d0d6b7c5 JB |
5334 | |
5335 | /* Insert new output into buffer | |
5336 | at the current end-of-output marker, | |
5337 | thus preserving logical ordering of input and output. */ | |
4d2b044c | 5338 | if (XMARKER (p->mark)->buffer) |
3193acd2 | 5339 | SET_PT_BOTH (clip_to_bounds (BEGV, |
4d2b044c | 5340 | marker_position (p->mark), ZV), |
3193acd2 | 5341 | clip_to_bounds (BEGV_BYTE, |
4d2b044c | 5342 | marker_byte_position (p->mark), |
d8a2934e | 5343 | ZV_BYTE)); |
d0d6b7c5 | 5344 | else |
d8a2934e | 5345 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5346 | before = PT; |
d8a2934e | 5347 | before_byte = PT_BYTE; |
b0310da4 JB |
5348 | |
5349 | /* If the output marker is outside of the visible region, save | |
5350 | the restriction and widen. */ | |
6ec8bbd2 | 5351 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5352 | Fwiden (); |
5353 | ||
400a67ff | 5354 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 KH |
5355 | text = coding->dst_object; |
5356 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5357 | /* A new coding system might be found. See the comment in the |
5358 | similar code in the previous `if' block. */ | |
4d2b044c | 5359 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5360 | { |
6a09a33b | 5361 | pset_decode_coding_system (p, Vlast_coding_system_used); |
4d2b044c | 5362 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5363 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5364 | { |
6a09a33b PE |
5365 | pset_encode_coding_system |
5366 | (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil)); | |
4d2b044c | 5367 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5368 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5369 | } |
5370 | } | |
dd8c7a53 KH |
5371 | if (coding->carryover_bytes > 0) |
5372 | { | |
4d2b044c | 5373 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
6a09a33b | 5374 | pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes)); |
4d2b044c | 5375 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
72af86bd | 5376 | coding->carryover_bytes); |
8c406a9b | 5377 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5378 | } |
d69864bf | 5379 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5380 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5381 | != ! STRING_MULTIBYTE (text)) |
5382 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5383 | ? Fstring_as_unibyte (text) |
03f04413 | 5384 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5385 | /* Insert before markers in case we are inserting where |
5386 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5387 | insert_from_string_before_markers (text, 0, 0, |
5388 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5389 | |
926b7e5e GM |
5390 | /* Make sure the process marker's position is valid when the |
5391 | process buffer is changed in the signal_after_change above. | |
5392 | W3 is known to do that. */ | |
4d2b044c DA |
5393 | if (BUFFERP (p->buffer) |
5394 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5395 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
926b7e5e | 5396 | else |
4d2b044c | 5397 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
b0310da4 | 5398 | |
d0d6b7c5 JB |
5399 | update_mode_lines++; |
5400 | ||
12ca5cdf RS |
5401 | /* Make sure opoint and the old restrictions |
5402 | float ahead of any new text just as point would. */ | |
5403 | if (opoint >= before) | |
d8a2934e RS |
5404 | { |
5405 | opoint += PT - before; | |
5406 | opoint_byte += PT_BYTE - before_byte; | |
5407 | } | |
12ca5cdf | 5408 | if (old_begv > before) |
d8a2934e RS |
5409 | { |
5410 | old_begv += PT - before; | |
5411 | old_begv_byte += PT_BYTE - before_byte; | |
5412 | } | |
12ca5cdf | 5413 | if (old_zv >= before) |
d8a2934e RS |
5414 | { |
5415 | old_zv += PT - before; | |
5416 | old_zv_byte += PT_BYTE - before_byte; | |
5417 | } | |
12ca5cdf | 5418 | |
b0310da4 | 5419 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5420 | if (old_begv != BEGV || old_zv != ZV) |
5421 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5422 | |
30c78175 | 5423 | |
39eb03f1 | 5424 | bset_read_only (current_buffer, old_read_only); |
d8a2934e | 5425 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5426 | } |
3a4fa2f2 SM |
5427 | /* Handling the process output should not deactivate the mark. */ |
5428 | Vdeactivate_mark = odeactivate; | |
5429 | ||
5430 | unbind_to (count, Qnil); | |
1d2fc612 | 5431 | return nbytes; |
d0d6b7c5 | 5432 | } |
d0d6b7c5 JB |
5433 | \f |
5434 | /* Sending data to subprocess */ | |
5435 | ||
40ccffa6 PE |
5436 | static jmp_buf send_process_frame; |
5437 | static Lisp_Object process_sent_to; | |
d0d6b7c5 | 5438 | |
006c5daa | 5439 | #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD |
845ca893 | 5440 | static _Noreturn void send_process_trap (int); |
006c5daa PE |
5441 | #endif |
5442 | ||
9af30bdf | 5443 | static void |
d3da34e0 | 5444 | send_process_trap (int ignore) |
d0d6b7c5 | 5445 | { |
333f1b6f | 5446 | SIGNAL_THREAD_CHECK (SIGPIPE); |
c8f44005 | 5447 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5448 | longjmp (send_process_frame, 1); |
5449 | } | |
5450 | ||
20ca2e94 TN |
5451 | /* In send_process, when a write fails temporarily, |
5452 | wait_reading_process_output is called. It may execute user code, | |
5453 | e.g. timers, that attempts to write new data to the same process. | |
5454 | We must ensure that data is sent in the right order, and not | |
5455 | interspersed half-completed with other writes (Bug#10815). This is | |
5456 | handled by the write_queue element of struct process. It is a list | |
5457 | with each entry having the form | |
5458 | ||
5459 | (string . (offset . length)) | |
5460 | ||
5461 | where STRING is a lisp string, OFFSET is the offset into the | |
5462 | string's byte sequence from which we should begin to send, and | |
5463 | LENGTH is the number of bytes left to send. */ | |
5464 | ||
5465 | /* Create a new entry in write_queue. | |
5466 | INPUT_OBJ should be a buffer, string Qt, or Qnil. | |
5467 | BUF is a pointer to the string sequence of the input_obj or a C | |
5468 | string in case of Qt or Qnil. */ | |
5469 | ||
5470 | static void | |
5471 | write_queue_push (struct Lisp_Process *p, Lisp_Object input_obj, | |
7ea2b339 | 5472 | const char *buf, ptrdiff_t len, int front) |
20ca2e94 | 5473 | { |
7ea2b339 | 5474 | ptrdiff_t offset; |
20ca2e94 TN |
5475 | Lisp_Object entry, obj; |
5476 | ||
5477 | if (STRINGP (input_obj)) | |
5478 | { | |
5479 | offset = buf - SSDATA (input_obj); | |
5480 | obj = input_obj; | |
5481 | } | |
5482 | else | |
5483 | { | |
5484 | offset = 0; | |
5485 | obj = make_unibyte_string (buf, len); | |
5486 | } | |
5487 | ||
5488 | entry = Fcons (obj, Fcons (make_number (offset), make_number (len))); | |
5489 | ||
5490 | if (front) | |
6a09a33b | 5491 | pset_write_queue (p, Fcons (entry, p->write_queue)); |
20ca2e94 | 5492 | else |
6a09a33b | 5493 | pset_write_queue (p, nconc2 (p->write_queue, Fcons (entry, Qnil))); |
20ca2e94 TN |
5494 | } |
5495 | ||
5496 | /* Remove the first element in the write_queue of process P, put its | |
5497 | contents in OBJ, BUF and LEN, and return non-zero. If the | |
5498 | write_queue is empty, return zero. */ | |
5499 | ||
5500 | static int | |
5501 | write_queue_pop (struct Lisp_Process *p, Lisp_Object *obj, | |
7ea2b339 | 5502 | const char **buf, ptrdiff_t *len) |
20ca2e94 TN |
5503 | { |
5504 | Lisp_Object entry, offset_length; | |
7ea2b339 | 5505 | ptrdiff_t offset; |
20ca2e94 | 5506 | |
4d2b044c | 5507 | if (NILP (p->write_queue)) |
20ca2e94 TN |
5508 | return 0; |
5509 | ||
4d2b044c | 5510 | entry = XCAR (p->write_queue); |
6a09a33b | 5511 | pset_write_queue (p, XCDR (p->write_queue)); |
20ca2e94 TN |
5512 | |
5513 | *obj = XCAR (entry); | |
5514 | offset_length = XCDR (entry); | |
5515 | ||
5516 | *len = XINT (XCDR (offset_length)); | |
5517 | offset = XINT (XCAR (offset_length)); | |
7ea2b339 | 5518 | *buf = SSDATA (*obj) + offset; |
20ca2e94 TN |
5519 | |
5520 | return 1; | |
5521 | } | |
5522 | ||
4556b700 RS |
5523 | /* Send some data to process PROC. |
5524 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5525 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5526 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5527 | |
a92e4183 KH |
5528 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5529 | for encoding before it is sent. | |
1fb0098c GM |
5530 | |
5531 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5532 | |
ff6daed3 | 5533 | static void |
400a67ff | 5534 | send_process (volatile Lisp_Object proc, const char *volatile buf, |
d311d28c | 5535 | volatile ptrdiff_t len, volatile Lisp_Object object) |
d0d6b7c5 | 5536 | { |
ecd1f654 | 5537 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5538 | struct Lisp_Process *p = XPROCESS (proc); |
368f4090 | 5539 | ssize_t rv; |
0fa1789e | 5540 | struct coding_system *coding; |
9af30bdf | 5541 | void (*volatile old_sigpipe) (int); |
6044e593 | 5542 | |
6bfd98e7 | 5543 | if (p->raw_status_new) |
6b61353c | 5544 | update_status (p); |
4d2b044c DA |
5545 | if (! EQ (p->status, Qrun)) |
5546 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5547 | if (p->outfd < 0) |
4d2b044c | 5548 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5549 | |
60f0fb11 | 5550 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5551 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5552 | |
ed7a4b2d KH |
5553 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5554 | || (BUFFERP (object) | |
4b4deea2 | 5555 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5556 | || EQ (object, Qt)) |
278bfdd6 | 5557 | { |
6a09a33b PE |
5558 | pset_encode_coding_system |
5559 | (p, complement_process_encoding_system (p->encode_coding_system)); | |
4d2b044c | 5560 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
fcaf8878 KH |
5561 | { |
5562 | /* The coding system for encoding was changed to raw-text | |
5563 | because we sent a unibyte text previously. Now we are | |
5564 | sending a multibyte text, thus we must encode it by the | |
5565 | original coding system specified for the current process. | |
5566 | ||
da6062e6 PE |
5567 | Another reason we come here is that the coding system |
5568 | was just complemented and a new one was returned by | |
fcaf8878 | 5569 | complement_process_encoding_system. */ |
4d2b044c DA |
5570 | setup_coding_system (p->encode_coding_system, coding); |
5571 | Vlast_coding_system_used = p->encode_coding_system; | |
fcaf8878 | 5572 | } |
e08bbb84 | 5573 | coding->src_multibyte = 1; |
278bfdd6 KH |
5574 | } |
5575 | else | |
5576 | { | |
a0241d01 | 5577 | coding->src_multibyte = 0; |
a92e4183 KH |
5578 | /* For sending a unibyte text, character code conversion should |
5579 | not take place but EOL conversion should. So, setup raw-text | |
5580 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5581 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5582 | { |
5583 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5584 | { | |
5585 | /* But, before changing the coding, we must flush out data. */ | |
5586 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5587 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5588 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5589 | } |
5bbf78c1 KH |
5590 | setup_coding_system (raw_text_coding_system |
5591 | (Vlast_coding_system_used), | |
5592 | coding); | |
e08bbb84 | 5593 | coding->src_multibyte = 0; |
a92e4183 | 5594 | } |
278bfdd6 | 5595 | } |
a4a37e65 KH |
5596 | coding->dst_multibyte = 0; |
5597 | ||
ed7a4b2d | 5598 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5599 | { |
5bbf78c1 | 5600 | coding->dst_object = Qt; |
ed7a4b2d | 5601 | if (BUFFERP (object)) |
0fa1789e | 5602 | { |
d311d28c PE |
5603 | ptrdiff_t from_byte, from, to; |
5604 | ptrdiff_t save_pt, save_pt_byte; | |
5bbf78c1 KH |
5605 | struct buffer *cur = current_buffer; |
5606 | ||
5607 | set_buffer_internal (XBUFFER (object)); | |
5608 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5609 | ||
400a67ff | 5610 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5611 | from = BYTE_TO_CHAR (from_byte); |
5612 | to = BYTE_TO_CHAR (from_byte + len); | |
5613 | TEMP_SET_PT_BOTH (from, from_byte); | |
5614 | encode_coding_object (coding, object, from, from_byte, | |
5615 | to, from_byte + len, Qt); | |
5616 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5617 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5618 | } |
5619 | else if (STRINGP (object)) | |
5620 | { | |
550c8289 KH |
5621 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5622 | SBYTES (object), Qt); | |
0fa1789e | 5623 | } |
5bbf78c1 | 5624 | else |
452294c2 | 5625 | { |
5bbf78c1 KH |
5626 | coding->dst_object = make_unibyte_string (buf, len); |
5627 | coding->produced = len; | |
452294c2 | 5628 | } |
ed7a4b2d | 5629 | |
e7fbaa65 | 5630 | len = coding->produced; |
347f3cd3 | 5631 | object = coding->dst_object; |
400a67ff | 5632 | buf = SSDATA (object); |
0fa1789e | 5633 | } |
d0d6b7c5 | 5634 | |
4556b700 RS |
5635 | if (pty_max_bytes == 0) |
5636 | { | |
5637 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5638 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5639 | if (pty_max_bytes < 0) |
5640 | pty_max_bytes = 250; | |
5641 | #else | |
5642 | pty_max_bytes = 250; | |
5643 | #endif | |
5644 | /* Deduct one, to leave space for the eof. */ | |
5645 | pty_max_bytes--; | |
5646 | } | |
5647 | ||
0daad115 GM |
5648 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5649 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5650 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5651 | if (!setjmp (send_process_frame)) |
0daad115 | 5652 | { |
006c5daa | 5653 | p = XPROCESS (proc); /* Repair any setjmp clobbering. */ |
0daad115 | 5654 | process_sent_to = proc; |
20ca2e94 TN |
5655 | |
5656 | /* If there is already data in the write_queue, put the new data | |
5657 | in the back of queue. Otherwise, ignore it. */ | |
4d2b044c | 5658 | if (!NILP (p->write_queue)) |
20ca2e94 TN |
5659 | write_queue_push (p, object, buf, len, 0); |
5660 | ||
5661 | do /* while !NILP (p->write_queue) */ | |
0daad115 | 5662 | { |
7ea2b339 | 5663 | ptrdiff_t cur_len = -1; |
20ca2e94 TN |
5664 | const char *cur_buf; |
5665 | Lisp_Object cur_object; | |
5666 | ||
5667 | /* If write_queue is empty, ignore it. */ | |
5668 | if (!write_queue_pop (p, &cur_object, &cur_buf, &cur_len)) | |
5669 | { | |
5670 | cur_len = len; | |
5671 | cur_buf = buf; | |
5672 | cur_object = object; | |
5673 | } | |
93b4f699 | 5674 | |
20ca2e94 | 5675 | while (cur_len > 0) |
0daad115 | 5676 | { |
20ca2e94 | 5677 | /* Send this batch, using one or more write calls. */ |
d311d28c | 5678 | ptrdiff_t written = 0; |
60f0fb11 | 5679 | int outfd = p->outfd; |
9af30bdf | 5680 | old_sigpipe = (void (*) (int)) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5681 | #ifdef DATAGRAM_SOCKETS |
5682 | if (DATAGRAM_CHAN_P (outfd)) | |
5683 | { | |
20ca2e94 | 5684 | rv = sendto (outfd, cur_buf, cur_len, |
e690ca94 KS |
5685 | 0, datagram_address[outfd].sa, |
5686 | datagram_address[outfd].len); | |
273a5f82 PE |
5687 | if (0 <= rv) |
5688 | written = rv; | |
5689 | else if (errno == EMSGSIZE) | |
c8f44005 RS |
5690 | { |
5691 | signal (SIGPIPE, old_sigpipe); | |
5692 | report_file_error ("sending datagram", | |
5693 | Fcons (proc, Qnil)); | |
5694 | } | |
e690ca94 KS |
5695 | } |
5696 | else | |
5697 | #endif | |
6b61353c | 5698 | { |
8af55556 | 5699 | #ifdef HAVE_GNUTLS |
959ad23f | 5700 | if (p->gnutls_p) |
20ca2e94 | 5701 | written = emacs_gnutls_write (p, cur_buf, cur_len); |
8af55556 TZ |
5702 | else |
5703 | #endif | |
20ca2e94 | 5704 | written = emacs_write (outfd, cur_buf, cur_len); |
086e8c47 | 5705 | rv = (written ? 0 : -1); |
6b61353c | 5706 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
5707 | if (p->read_output_delay > 0 |
5708 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5709 | { |
60f0fb11 | 5710 | p->read_output_delay = 0; |
6b61353c | 5711 | process_output_delay_count--; |
60f0fb11 | 5712 | p->read_output_skip = 0; |
6b61353c KH |
5713 | } |
5714 | #endif | |
5715 | } | |
0daad115 | 5716 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5717 | |
0daad115 GM |
5718 | if (rv < 0) |
5719 | { | |
5720 | if (0 | |
d0d6b7c5 | 5721 | #ifdef EWOULDBLOCK |
0daad115 | 5722 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5723 | #endif |
5724 | #ifdef EAGAIN | |
0daad115 | 5725 | || errno == EAGAIN |
d0d6b7c5 | 5726 | #endif |
0daad115 | 5727 | ) |
177c0ea7 | 5728 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5729 | that may allow the program |
5730 | to finish doing output and read more. */ | |
5731 | { | |
3433b6bd | 5732 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5733 | /* A gross hack to work around a bug in FreeBSD. |
5734 | In the following sequence, read(2) returns | |
5735 | bogus data: | |
5736 | ||
5737 | write(2) 1022 bytes | |
5738 | write(2) 954 bytes, get EAGAIN | |
5739 | read(2) 1024 bytes in process_read_output | |
5740 | read(2) 11 bytes in process_read_output | |
5741 | ||
5742 | That is, read(2) returns more bytes than have | |
5743 | ever been written successfully. The 1033 bytes | |
5744 | read are the 1022 bytes written successfully | |
5745 | after processing (for example with CRs added if | |
5746 | the terminal is set up that way which it is | |
5747 | here). The same bytes will be seen again in a | |
5748 | later read(2), without the CRs. */ | |
177c0ea7 | 5749 | |
0daad115 GM |
5750 | if (errno == EAGAIN) |
5751 | { | |
5752 | int flags = FWRITE; | |
60f0fb11 | 5753 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5754 | } |
3433b6bd | 5755 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5756 | |
7ea2b339 | 5757 | /* Put what we should have written in wait_queue. */ |
20ca2e94 | 5758 | write_queue_push (p, cur_object, cur_buf, cur_len, 1); |
d35af63c PE |
5759 | wait_reading_process_output (0, 20 * 1000 * 1000, |
5760 | 0, 0, Qnil, NULL, 0); | |
7ea2b339 | 5761 | /* Reread queue, to see what is left. */ |
20ca2e94 | 5762 | break; |
0daad115 GM |
5763 | } |
5764 | else | |
5765 | /* This is a real error. */ | |
5766 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5767 | } | |
20ca2e94 TN |
5768 | cur_buf += written; |
5769 | cur_len -= written; | |
0daad115 | 5770 | } |
0daad115 | 5771 | } |
4d2b044c | 5772 | while (!NILP (p->write_queue)); |
0daad115 | 5773 | } |
d0d6b7c5 JB |
5774 | else |
5775 | { | |
0ff69270 | 5776 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5777 | proc = process_sent_to; |
6b61353c | 5778 | p = XPROCESS (proc); |
6bfd98e7 | 5779 | p->raw_status_new = 0; |
6a09a33b | 5780 | pset_status (p, Fcons (Qexit, Fcons (make_number (256), Qnil))); |
60f0fb11 | 5781 | p->tick = ++process_tick; |
d0d6b7c5 | 5782 | deactivate_process (proc); |
4d2b044c | 5783 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5784 | } |
5785 | } | |
5786 | ||
5787 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5788 | 3, 3, 0, |
5789 | doc: /* Send current contents of region as input to PROCESS. | |
5790 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5791 | nil, indicating the current buffer's process. | |
5792 | Called from program, takes three arguments, PROCESS, START and END. | |
5793 | If the region is more than 500 characters long, | |
5794 | it is sent in several bunches. This may happen even for shorter regions. | |
5795 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5796 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5797 | { |
5798 | Lisp_Object proc; | |
d311d28c | 5799 | ptrdiff_t start1, end1; |
d0d6b7c5 JB |
5800 | |
5801 | proc = get_process (process); | |
5802 | validate_region (&start, &end); | |
1b234f64 KH |
5803 | |
5804 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5805 | move_gap (XINT (start)); | |
5806 | ||
5807 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5808 | end1 = CHAR_TO_BYTE (XINT (end)); | |
400a67ff | 5809 | send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1, |
1b234f64 KH |
5810 | Fcurrent_buffer ()); |
5811 | ||
d0d6b7c5 JB |
5812 | return Qnil; |
5813 | } | |
5814 | ||
5815 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5816 | 2, 2, 0, |
5817 | doc: /* Send PROCESS the contents of STRING as input. | |
5818 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5819 | nil, indicating the current buffer's process. | |
5820 | If STRING is more than 500 characters long, | |
5821 | it is sent in several bunches. This may happen even for shorter strings. | |
5822 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5823 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5824 | { |
5825 | Lisp_Object proc; | |
b7826503 | 5826 | CHECK_STRING (string); |
d0d6b7c5 | 5827 | proc = get_process (process); |
400a67ff | 5828 | send_process (proc, SSDATA (string), |
1b234f64 | 5829 | SBYTES (string), string); |
d0d6b7c5 JB |
5830 | return Qnil; |
5831 | } | |
5832 | \f | |
16782258 JD |
5833 | /* Return the foreground process group for the tty/pty that |
5834 | the process P uses. */ | |
dde14581 | 5835 | static pid_t |
d3da34e0 | 5836 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 | 5837 | { |
dde14581 | 5838 | pid_t gid = -1; |
16782258 | 5839 | |
f3d9532b | 5840 | #ifdef TIOCGPGRP |
4d2b044c | 5841 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5842 | { |
5843 | int fd; | |
5844 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5845 | master side. Try the slave side. */ | |
4d2b044c | 5846 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5847 | |
5848 | if (fd != -1) | |
5849 | { | |
5850 | ioctl (fd, TIOCGPGRP, &gid); | |
5851 | emacs_close (fd); | |
5852 | } | |
5853 | } | |
5854 | #endif /* defined (TIOCGPGRP ) */ | |
5855 | ||
5856 | return gid; | |
5857 | } | |
5858 | ||
b81ea5ef RS |
5859 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5860 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5861 | doc: /* Return t if PROCESS has given the terminal to a child. |
5862 | If the operating system does not make it possible to find out, | |
5863 | return t unconditionally. */) | |
5842a27b | 5864 | (Lisp_Object process) |
b81ea5ef RS |
5865 | { |
5866 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5867 | in a way that will cause returning t. */ | |
dde14581 | 5868 | pid_t gid; |
b81ea5ef RS |
5869 | Lisp_Object proc; |
5870 | struct Lisp_Process *p; | |
5871 | ||
5872 | proc = get_process (process); | |
5873 | p = XPROCESS (proc); | |
5874 | ||
4d2b044c | 5875 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5876 | error ("Process %s is not a subprocess", |
4d2b044c | 5877 | SDATA (p->name)); |
60f0fb11 | 5878 | if (p->infd < 0) |
b81ea5ef | 5879 | error ("Process %s is not active", |
4d2b044c | 5880 | SDATA (p->name)); |
b81ea5ef | 5881 | |
16782258 | 5882 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5883 | |
6bfd98e7 | 5884 | if (gid == p->pid) |
b81ea5ef RS |
5885 | return Qnil; |
5886 | return Qt; | |
5887 | } | |
5888 | \f | |
d0d6b7c5 | 5889 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5890 | If CURRENT_GROUP is t, that means send to the process group |
5891 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5892 | This is used for various commands in shell mode. |
b81ea5ef RS |
5893 | If CURRENT_GROUP is lambda, that means send to the process group |
5894 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5895 | ||
d0d6b7c5 | 5896 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5897 | right away. |
5898 | ||
5899 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5900 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5901 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5902 | |
f9738840 | 5903 | static void |
d3da34e0 JB |
5904 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5905 | int nomsg) | |
d0d6b7c5 JB |
5906 | { |
5907 | Lisp_Object proc; | |
5908 | register struct Lisp_Process *p; | |
dde14581 | 5909 | pid_t gid; |
d0d6b7c5 JB |
5910 | int no_pgrp = 0; |
5911 | ||
5912 | proc = get_process (process); | |
5913 | p = XPROCESS (proc); | |
5914 | ||
4d2b044c | 5915 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5916 | error ("Process %s is not a subprocess", |
4d2b044c | 5917 | SDATA (p->name)); |
60f0fb11 | 5918 | if (p->infd < 0) |
d0d6b7c5 | 5919 | error ("Process %s is not active", |
4d2b044c | 5920 | SDATA (p->name)); |
d0d6b7c5 | 5921 | |
60f0fb11 | 5922 | if (!p->pty_flag) |
d0d6b7c5 JB |
5923 | current_group = Qnil; |
5924 | ||
d0d6b7c5 | 5925 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5926 | if (NILP (current_group)) |
5927 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5928 | gid = p->pid; |
2af70a0c | 5929 | else |
d0d6b7c5 | 5930 | { |
b0310da4 | 5931 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5932 | /* If possible, send signals to the entire pgrp |
5933 | by sending an input character to it. */ | |
b0310da4 | 5934 | |
6be429b1 | 5935 | struct termios t; |
7f916a36 RS |
5936 | cc_t *sig_char = NULL; |
5937 | ||
60f0fb11 | 5938 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5939 | |
5940 | switch (signo) | |
5941 | { | |
5942 | case SIGINT: | |
7f916a36 RS |
5943 | sig_char = &t.c_cc[VINTR]; |
5944 | break; | |
6be429b1 JB |
5945 | |
5946 | case SIGQUIT: | |
7f916a36 RS |
5947 | sig_char = &t.c_cc[VQUIT]; |
5948 | break; | |
6be429b1 JB |
5949 | |
5950 | case SIGTSTP: | |
d0adf46f | 5951 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5952 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5953 | #else |
7f916a36 | 5954 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5955 | #endif |
7f916a36 | 5956 | break; |
6be429b1 JB |
5957 | } |
5958 | ||
ca4313d5 | 5959 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc | 5960 | { |
f990b4e5 | 5961 | send_process (proc, (char *) sig_char, 1, Qnil); |
f1c206fc RS |
5962 | return; |
5963 | } | |
5964 | /* If we can't send the signal with a character, | |
5965 | fall through and send it another way. */ | |
f1c206fc RS |
5966 | |
5967 | /* The code above may fall through if it can't | |
5968 | handle the signal. */ | |
20505336 | 5969 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5970 | |
177c0ea7 | 5971 | #ifdef TIOCGPGRP |
2af70a0c | 5972 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5973 | Otherwise, use the pty to get the pgrp. |
5974 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5975 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5976 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5977 | His patch indicates that if TIOCGPGRP returns an error, then |
5978 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5979 | |
16782258 | 5980 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5981 | |
16782258 JD |
5982 | if (gid == -1) |
5983 | /* If we can't get the information, assume | |
5984 | the shell owns the tty. */ | |
6bfd98e7 | 5985 | gid = p->pid; |
2af70a0c RS |
5986 | |
5987 | /* It is not clear whether anything really can set GID to -1. | |
5988 | Perhaps on some system one of those ioctls can or could do so. | |
5989 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5990 | if (gid == -1) |
5991 | no_pgrp = 1; | |
b0310da4 | 5992 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5993 | /* Can't select pgrps on this system, so we know that |
5994 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5995 | gid = p->pid; |
301c3fe4 | 5996 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5997 | |
5998 | /* If current_group is lambda, and the shell owns the terminal, | |
5999 | don't send any signal. */ | |
6bfd98e7 | 6000 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 6001 | return; |
d0d6b7c5 | 6002 | } |
d0d6b7c5 JB |
6003 | |
6004 | switch (signo) | |
6005 | { | |
6006 | #ifdef SIGCONT | |
6007 | case SIGCONT: | |
6bfd98e7 | 6008 | p->raw_status_new = 0; |
6a09a33b | 6009 | pset_status (p, Qrun); |
60f0fb11 | 6010 | p->tick = ++process_tick; |
d0d6b7c5 | 6011 | if (!nomsg) |
e42bdf01 CY |
6012 | { |
6013 | status_notify (NULL); | |
6014 | redisplay_preserve_echo_area (13); | |
6015 | } | |
d0d6b7c5 | 6016 | break; |
301c3fe4 | 6017 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 6018 | case SIGINT: |
d0d6b7c5 | 6019 | case SIGQUIT: |
d0d6b7c5 | 6020 | case SIGKILL: |
60f0fb11 | 6021 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
6022 | break; |
6023 | } | |
6024 | ||
6025 | /* If we don't have process groups, send the signal to the immediate | |
6026 | subprocess. That isn't really right, but it's better than any | |
6027 | obvious alternative. */ | |
6028 | if (no_pgrp) | |
6029 | { | |
6bfd98e7 | 6030 | kill (p->pid, signo); |
d0d6b7c5 JB |
6031 | return; |
6032 | } | |
6033 | ||
6034 | /* gid may be a pid, or minus a pgrp's number */ | |
6035 | #ifdef TIOCSIGSEND | |
6036 | if (!NILP (current_group)) | |
16782258 | 6037 | { |
60f0fb11 | 6038 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
6039 | EMACS_KILLPG (gid, signo); |
6040 | } | |
d0d6b7c5 JB |
6041 | else |
6042 | { | |
6bfd98e7 | 6043 | gid = - p->pid; |
d0d6b7c5 JB |
6044 | kill (gid, signo); |
6045 | } | |
301c3fe4 | 6046 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 6047 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 6048 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
6049 | } |
6050 | ||
6051 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
6052 | doc: /* Interrupt process PROCESS. |
6053 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 6054 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
6055 | Second arg CURRENT-GROUP non-nil means send signal to |
6056 | the current process-group of the process's controlling terminal | |
6057 | rather than to the process's own process group. | |
6058 | If the process is a shell, this means interrupt current subjob | |
6059 | rather than the shell. | |
6060 | ||
6061 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
6062 | don't send the signal. */) | |
5842a27b | 6063 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6064 | { |
6065 | process_send_signal (process, SIGINT, current_group, 0); | |
6066 | return process; | |
6067 | } | |
6068 | ||
6069 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
6070 | doc: /* Kill process PROCESS. May be process or name of one. |
6071 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 6072 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6073 | { |
6074 | process_send_signal (process, SIGKILL, current_group, 0); | |
6075 | return process; | |
6076 | } | |
6077 | ||
6078 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
6079 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
6080 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 6081 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6082 | { |
6083 | process_send_signal (process, SIGQUIT, current_group, 0); | |
6084 | return process; | |
6085 | } | |
6086 | ||
6087 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6088 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6089 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6090 | If PROCESS is a network or serial process, inhibit handling of incoming |
6091 | traffic. */) | |
5842a27b | 6092 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6093 | { |
d888760c | 6094 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6095 | { |
6096 | struct Lisp_Process *p; | |
177c0ea7 | 6097 | |
e690ca94 | 6098 | p = XPROCESS (process); |
4d2b044c | 6099 | if (NILP (p->command) |
60f0fb11 | 6100 | && p->infd >= 0) |
e690ca94 | 6101 | { |
60f0fb11 SM |
6102 | FD_CLR (p->infd, &input_wait_mask); |
6103 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 | 6104 | } |
6a09a33b | 6105 | pset_command (p, Qt); |
e690ca94 KS |
6106 | return process; |
6107 | } | |
d0d6b7c5 | 6108 | #ifndef SIGTSTP |
a9a73d6c | 6109 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6110 | #else |
6111 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6112 | #endif | |
6113 | return process; | |
6114 | } | |
6115 | ||
6116 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6117 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6118 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6119 | If PROCESS is a network or serial process, resume handling of incoming |
6120 | traffic. */) | |
5842a27b | 6121 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6122 | { |
d888760c | 6123 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6124 | { |
6125 | struct Lisp_Process *p; | |
6126 | ||
6127 | p = XPROCESS (process); | |
4d2b044c | 6128 | if (EQ (p->command, Qt) |
60f0fb11 | 6129 | && p->infd >= 0 |
4d2b044c | 6130 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
e690ca94 | 6131 | { |
60f0fb11 SM |
6132 | FD_SET (p->infd, &input_wait_mask); |
6133 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6134 | #ifdef WINDOWSNT |
6135 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6136 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 6137 | #else /* not WINDOWSNT */ |
d888760c | 6138 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 6139 | #endif /* not WINDOWSNT */ |
e690ca94 | 6140 | } |
6a09a33b | 6141 | pset_command (p, Qnil); |
e690ca94 KS |
6142 | return process; |
6143 | } | |
d0d6b7c5 JB |
6144 | #ifdef SIGCONT |
6145 | process_send_signal (process, SIGCONT, current_group, 0); | |
6146 | #else | |
a9a73d6c | 6147 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6148 | #endif |
6149 | return process; | |
6150 | } | |
6151 | ||
6152 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6153 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6154 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6155 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6156 | process to signal; in this case, the process need not be a child of |
6157 | this Emacs. | |
fdb82f93 | 6158 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6159 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6160 | { |
6bfd98e7 | 6161 | pid_t pid; |
cdd5ea86 | 6162 | |
cdd5ea86 KS |
6163 | if (STRINGP (process)) |
6164 | { | |
d311d28c PE |
6165 | Lisp_Object tem = Fget_process (process); |
6166 | if (NILP (tem)) | |
cdd5ea86 | 6167 | { |
d44287d4 PE |
6168 | Lisp_Object process_number = |
6169 | string_to_number (SSDATA (process), 10, 1); | |
6170 | if (INTEGERP (process_number) || FLOATP (process_number)) | |
6171 | tem = process_number; | |
cdd5ea86 KS |
6172 | } |
6173 | process = tem; | |
6174 | } | |
d44287d4 | 6175 | else if (!NUMBERP (process)) |
cdd5ea86 | 6176 | process = get_process (process); |
177c0ea7 | 6177 | |
cdd5ea86 KS |
6178 | if (NILP (process)) |
6179 | return process; | |
6180 | ||
d83cf4cc PE |
6181 | if (NUMBERP (process)) |
6182 | CONS_TO_INTEGER (process, pid_t, pid); | |
d44287d4 PE |
6183 | else |
6184 | { | |
6185 | CHECK_PROCESS (process); | |
6186 | pid = XPROCESS (process)->pid; | |
6187 | if (pid <= 0) | |
4d2b044c | 6188 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
d44287d4 | 6189 | } |
4766242d | 6190 | |
59324b1d | 6191 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6192 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6193 | XSETINT (sigcode, VALUE) |
6194 | ||
6195 | if (INTEGERP (sigcode)) | |
d311d28c | 6196 | CHECK_TYPE_RANGED_INTEGER (int, sigcode); |
4766242d RS |
6197 | else |
6198 | { | |
25a48bd0 | 6199 | char *name; |
4766242d | 6200 | |
b7826503 | 6201 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6202 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6203 | |
ed3751c8 | 6204 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6205 | name += 3; |
6206 | ||
4766242d RS |
6207 | if (0) |
6208 | ; | |
59324b1d KS |
6209 | #ifdef SIGUSR1 |
6210 | parse_signal ("usr1", SIGUSR1); | |
6211 | #endif | |
6212 | #ifdef SIGUSR2 | |
6213 | parse_signal ("usr2", SIGUSR2); | |
6214 | #endif | |
6215 | #ifdef SIGTERM | |
6216 | parse_signal ("term", SIGTERM); | |
6217 | #endif | |
4766242d | 6218 | #ifdef SIGHUP |
59324b1d | 6219 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6220 | #endif |
6221 | #ifdef SIGINT | |
59324b1d | 6222 | parse_signal ("int", SIGINT); |
4766242d RS |
6223 | #endif |
6224 | #ifdef SIGQUIT | |
59324b1d | 6225 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6226 | #endif |
6227 | #ifdef SIGILL | |
59324b1d | 6228 | parse_signal ("ill", SIGILL); |
4766242d RS |
6229 | #endif |
6230 | #ifdef SIGABRT | |
59324b1d | 6231 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6232 | #endif |
6233 | #ifdef SIGEMT | |
59324b1d | 6234 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6235 | #endif |
6236 | #ifdef SIGKILL | |
59324b1d | 6237 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6238 | #endif |
6239 | #ifdef SIGFPE | |
59324b1d | 6240 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6241 | #endif |
6242 | #ifdef SIGBUS | |
59324b1d | 6243 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6244 | #endif |
6245 | #ifdef SIGSEGV | |
59324b1d | 6246 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6247 | #endif |
6248 | #ifdef SIGSYS | |
59324b1d | 6249 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6250 | #endif |
6251 | #ifdef SIGPIPE | |
59324b1d | 6252 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6253 | #endif |
6254 | #ifdef SIGALRM | |
59324b1d | 6255 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6256 | #endif |
6257 | #ifdef SIGURG | |
59324b1d | 6258 | parse_signal ("urg", SIGURG); |
4766242d RS |
6259 | #endif |
6260 | #ifdef SIGSTOP | |
59324b1d | 6261 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6262 | #endif |
6263 | #ifdef SIGTSTP | |
59324b1d | 6264 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6265 | #endif |
6266 | #ifdef SIGCONT | |
59324b1d | 6267 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6268 | #endif |
6269 | #ifdef SIGCHLD | |
59324b1d | 6270 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6271 | #endif |
6272 | #ifdef SIGTTIN | |
59324b1d | 6273 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6274 | #endif |
6275 | #ifdef SIGTTOU | |
59324b1d | 6276 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6277 | #endif |
6278 | #ifdef SIGIO | |
59324b1d | 6279 | parse_signal ("io", SIGIO); |
4766242d RS |
6280 | #endif |
6281 | #ifdef SIGXCPU | |
59324b1d | 6282 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6283 | #endif |
6284 | #ifdef SIGXFSZ | |
59324b1d | 6285 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6286 | #endif |
6287 | #ifdef SIGVTALRM | |
59324b1d | 6288 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6289 | #endif |
6290 | #ifdef SIGPROF | |
59324b1d | 6291 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6292 | #endif |
6293 | #ifdef SIGWINCH | |
59324b1d | 6294 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6295 | #endif |
6296 | #ifdef SIGINFO | |
59324b1d | 6297 | parse_signal ("info", SIGINFO); |
4766242d RS |
6298 | #endif |
6299 | else | |
9fa195a2 | 6300 | error ("Undefined signal name %s", name); |
4766242d RS |
6301 | } |
6302 | ||
59324b1d | 6303 | #undef parse_signal |
4766242d | 6304 | |
6bfd98e7 | 6305 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6306 | } |
6307 | ||
6308 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6309 | doc: /* Make PROCESS see end-of-file in its input. |
6310 | EOF comes after any text already sent to it. | |
6311 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6312 | nil, indicating the current buffer's process. | |
6313 | If PROCESS is a network connection, or is a process communicating | |
6314 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6315 | text to PROCESS after you call this function. |
6316 | If PROCESS is a serial process, wait until all output written to the | |
6317 | process has been transmitted to the serial port. */) | |
5842a27b | 6318 | (Lisp_Object process) |
d0d6b7c5 JB |
6319 | { |
6320 | Lisp_Object proc; | |
de7fbd09 | 6321 | struct coding_system *coding; |
d0d6b7c5 | 6322 | |
e690ca94 KS |
6323 | if (DATAGRAM_CONN_P (process)) |
6324 | return process; | |
6325 | ||
d0d6b7c5 | 6326 | proc = get_process (process); |
60f0fb11 | 6327 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6328 | |
6329 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6330 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 | 6331 | update_status (XPROCESS (proc)); |
4d2b044c DA |
6332 | if (! EQ (XPROCESS (proc)->status, Qrun)) |
6333 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); | |
577d03d5 | 6334 | |
de7fbd09 KH |
6335 | if (CODING_REQUIRE_FLUSHING (coding)) |
6336 | { | |
6337 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6338 | send_process (proc, "", 0, Qnil); | |
6339 | } | |
6340 | ||
60f0fb11 | 6341 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6342 | send_process (proc, "\004", 1, Qnil); |
4d2b044c | 6343 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6344 | { |
a7ebc409 | 6345 | #ifndef WINDOWSNT |
d888760c GM |
6346 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6347 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6348 | #endif /* not WINDOWSNT */ |
d888760c GM |
6349 | /* Do nothing on Windows because writes are blocking. */ |
6350 | } | |
d0d6b7c5 JB |
6351 | else |
6352 | { | |
4525f571 RS |
6353 | int old_outfd, new_outfd; |
6354 | ||
93853f3d | 6355 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6356 | /* If this is a network connection, or socketpair is used |
6357 | for communication with the subprocess, call shutdown to cause EOF. | |
6358 | (In some old system, shutdown to socketpair doesn't work. | |
6359 | Then we just can't win.) */ | |
4d2b044c | 6360 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6361 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6362 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6363 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6364 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6365 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6366 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6367 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6368 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6369 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6370 | if (new_outfd < 0) |
6371 | abort (); | |
60f0fb11 | 6372 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6373 | |
6374 | if (!proc_encode_coding_system[new_outfd]) | |
6375 | proc_encode_coding_system[new_outfd] | |
23f86fce | 6376 | = xmalloc (sizeof (struct coding_system)); |
72af86bd AS |
6377 | memcpy (proc_encode_coding_system[new_outfd], |
6378 | proc_encode_coding_system[old_outfd], | |
6379 | sizeof (struct coding_system)); | |
6380 | memset (proc_encode_coding_system[old_outfd], 0, | |
6381 | sizeof (struct coding_system)); | |
4525f571 | 6382 | |
60f0fb11 | 6383 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6384 | } |
d0d6b7c5 JB |
6385 | return process; |
6386 | } | |
d0d6b7c5 | 6387 | \f |
3fed8ad5 GM |
6388 | /* On receipt of a signal that a child status has changed, loop asking |
6389 | about children with changed statuses until the system says there | |
6390 | are no more. | |
177c0ea7 | 6391 | |
3fed8ad5 GM |
6392 | All we do is change the status; we do not run sentinels or print |
6393 | notifications. That is saved for the next time keyboard input is | |
6394 | done, in order to avoid timing errors. | |
6395 | ||
6396 | ** WARNING: this can be called during garbage collection. | |
6397 | Therefore, it must not be fooled by the presence of mark bits in | |
6398 | Lisp objects. | |
6399 | ||
6400 | ** USG WARNING: Although it is not obvious from the documentation | |
6401 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6402 | signal() before executing at least one wait(), otherwise the | |
6403 | handler will be called again, resulting in an infinite loop. The | |
6404 | relevant portion of the documentation reads "SIGCLD signals will be | |
6405 | queued and the signal-catching function will be continually | |
6406 | reentered until the queue is empty". Invoking signal() causes the | |
6407 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6408 | Inc. |
6409 | ||
6410 | ** Malloc WARNING: This should never call malloc either directly or | |
6411 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6412 | |
a5cfdda8 | 6413 | #ifdef SIGCHLD |
9af30bdf | 6414 | static void |
d3da34e0 | 6415 | sigchld_handler (int signo) |
d0d6b7c5 JB |
6416 | { |
6417 | int old_errno = errno; | |
6418 | Lisp_Object proc; | |
97ec208f | 6419 | struct Lisp_Process *p; |
d0d6b7c5 | 6420 | |
333f1b6f JD |
6421 | SIGNAL_THREAD_CHECK (signo); |
6422 | ||
d0d6b7c5 JB |
6423 | while (1) |
6424 | { | |
8e050977 | 6425 | pid_t pid; |
bba104c1 | 6426 | int w; |
d0d6b7c5 JB |
6427 | Lisp_Object tail; |
6428 | ||
6429 | #ifdef WNOHANG | |
6430 | #ifndef WUNTRACED | |
6431 | #define WUNTRACED 0 | |
6432 | #endif /* no WUNTRACED */ | |
6433 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 | 6434 | do |
63136da6 | 6435 | { |
29ed4d51 | 6436 | errno = 0; |
13294f95 | 6437 | pid = waitpid (-1, &w, WNOHANG | WUNTRACED); |
29ed4d51 | 6438 | } |
e7d4a904 | 6439 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6440 | |
6441 | if (pid <= 0) | |
6442 | { | |
3fed8ad5 GM |
6443 | /* PID == 0 means no processes found, PID == -1 means a real |
6444 | failure. We have done all our job, so return. */ | |
d0d6b7c5 | 6445 | |
d0d6b7c5 JB |
6446 | errno = old_errno; |
6447 | return; | |
6448 | } | |
6449 | #else | |
6450 | pid = wait (&w); | |
6451 | #endif /* no WNOHANG */ | |
6452 | ||
6453 | /* Find the process that signaled us, and record its status. */ | |
6454 | ||
a5cfdda8 | 6455 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6456 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6457 | { |
8e050977 | 6458 | Lisp_Object xpid = XCAR (tail); |
d311d28c PE |
6459 | if ((INTEGERP (xpid) && pid == XINT (xpid)) |
6460 | || (FLOATP (xpid) && pid == XFLOAT_DATA (xpid))) | |
8e050977 CY |
6461 | { |
6462 | XSETCAR (tail, Qnil); | |
6463 | goto sigchld_end_of_loop; | |
6464 | } | |
a5cfdda8 KS |
6465 | } |
6466 | ||
6467 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6468 | p = 0; |
8e50cc2d | 6469 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6470 | { |
70949dac | 6471 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6472 | p = XPROCESS (proc); |
4d2b044c | 6473 | if (EQ (p->type, Qreal) && p->pid == pid) |
d0d6b7c5 JB |
6474 | break; |
6475 | p = 0; | |
6476 | } | |
6477 | ||
6478 | /* Look for an asynchronous process whose pid hasn't been filled | |
6479 | in yet. */ | |
6480 | if (p == 0) | |
8e50cc2d | 6481 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6482 | { |
70949dac | 6483 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6484 | p = XPROCESS (proc); |
6bfd98e7 | 6485 | if (p->pid == -1) |
d0d6b7c5 JB |
6486 | break; |
6487 | p = 0; | |
6488 | } | |
177c0ea7 | 6489 | |
d0d6b7c5 JB |
6490 | /* Change the status of the process that was found. */ |
6491 | if (p != 0) | |
6492 | { | |
e98d950b | 6493 | int clear_desc_flag = 0; |
177c0ea7 | 6494 | |
60f0fb11 | 6495 | p->tick = ++process_tick; |
bba104c1 | 6496 | p->raw_status = w; |
6bfd98e7 | 6497 | p->raw_status_new = 1; |
177c0ea7 | 6498 | |
d0d6b7c5 | 6499 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6500 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6501 | && p->infd >= 0) |
e98d950b RS |
6502 | clear_desc_flag = 1; |
6503 | ||
6504 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6505 | if (clear_desc_flag) | |
6506 | { | |
60f0fb11 SM |
6507 | FD_CLR (p->infd, &input_wait_mask); |
6508 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6509 | } |
6be429b1 | 6510 | |
214d6069 | 6511 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6512 | look around. */ |
6513 | if (input_available_clear_time) | |
e9a9ae03 | 6514 | *input_available_clear_time = make_emacs_time (0, 0); |
d0d6b7c5 JB |
6515 | } |
6516 | ||
a5cfdda8 KS |
6517 | /* There was no asynchronous process found for that pid: we have |
6518 | a synchronous process. */ | |
d0d6b7c5 JB |
6519 | else |
6520 | { | |
6521 | synch_process_alive = 0; | |
6522 | ||
6523 | /* Report the status of the synchronous process. */ | |
6524 | if (WIFEXITED (w)) | |
13294f95 | 6525 | synch_process_retcode = WEXITSTATUS (w); |
d0d6b7c5 | 6526 | else if (WIFSIGNALED (w)) |
63136da6 | 6527 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6528 | |
214d6069 | 6529 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6530 | look around. */ |
6531 | if (input_available_clear_time) | |
e9a9ae03 | 6532 | *input_available_clear_time = make_emacs_time (0, 0); |
d0d6b7c5 JB |
6533 | } |
6534 | ||
a5cfdda8 KS |
6535 | sigchld_end_of_loop: |
6536 | ; | |
6537 | ||
d0d6b7c5 JB |
6538 | /* On some systems, we must return right away. |
6539 | If any more processes want to signal us, we will | |
6540 | get another signal. | |
6541 | Otherwise (on systems that have WNOHANG), loop around | |
6542 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6543 | #if (defined WINDOWSNT \ |
8a2a6032 | 6544 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6545 | && !(defined HPUX && defined WNOHANG))) |
d0d6b7c5 JB |
6546 | errno = old_errno; |
6547 | return; | |
6548 | #endif /* USG, but not HPUX with WNOHANG */ | |
6549 | } | |
6550 | } | |
a5cfdda8 | 6551 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6552 | \f |
6553 | ||
6554 | static Lisp_Object | |
d3da34e0 | 6555 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6556 | { |
6a09a33b | 6557 | pset_sentinel (XPROCESS (XCAR (data)), XCDR (data)); |
d0d6b7c5 JB |
6558 | return Qnil; |
6559 | } | |
6560 | ||
3b9a3dfa | 6561 | static Lisp_Object |
b93aacde | 6562 | exec_sentinel_error_handler (Lisp_Object error_val) |
3b9a3dfa | 6563 | { |
b93aacde | 6564 | cmd_error_internal (error_val, "error in process sentinel: "); |
3b9a3dfa RS |
6565 | Vinhibit_quit = Qt; |
6566 | update_echo_area (); | |
833ba342 | 6567 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6568 | return Qt; |
3b9a3dfa RS |
6569 | } |
6570 | ||
d0d6b7c5 | 6571 | static void |
d3da34e0 | 6572 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6573 | { |
aba7731a | 6574 | Lisp_Object sentinel, odeactivate; |
d0d6b7c5 | 6575 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 6576 | ptrdiff_t count = SPECPDL_INDEX (); |
4da2f5be | 6577 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6578 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6579 | |
84af9896 RS |
6580 | if (inhibit_sentinels) |
6581 | return; | |
6582 | ||
dfc21838 RS |
6583 | /* No need to gcpro these, because all we do with them later |
6584 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6585 | odeactivate = Vdeactivate_mark; |
aba7731a PE |
6586 | #if 0 |
6587 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 6588 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6589 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 6590 | #endif |
dfc21838 | 6591 | |
97e53006 SM |
6592 | /* There's no good reason to let sentinels change the current |
6593 | buffer, and many callers of accept-process-output, sit-for, and | |
6594 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 6595 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
97e53006 | 6596 | |
4d2b044c | 6597 | sentinel = p->sentinel; |
d0d6b7c5 JB |
6598 | if (NILP (sentinel)) |
6599 | return; | |
6600 | ||
6601 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6602 | assure that it gets restored no matter how the sentinel exits. */ | |
6a09a33b | 6603 | pset_sentinel (p, Qnil); |
d0d6b7c5 JB |
6604 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); |
6605 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6606 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6607 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6608 | |
4da2f5be RS |
6609 | /* In case we get recursively called, |
6610 | and we already saved the match data nonrecursively, | |
6611 | save the same match data in safely recursive fashion. */ | |
6612 | if (outer_running_asynch_code) | |
6613 | { | |
6614 | Lisp_Object tem; | |
89f2614d KS |
6615 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6616 | restore_search_regs (); | |
6617 | record_unwind_save_match_data (); | |
6618 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6619 | } |
6620 | ||
6621 | /* For speed, if a search happens within this code, | |
6622 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6623 | running_asynch_code = 1; |
4da2f5be | 6624 | |
3b9a3dfa RS |
6625 | internal_condition_case_1 (read_process_output_call, |
6626 | Fcons (sentinel, | |
6627 | Fcons (proc, Fcons (reason, Qnil))), | |
6628 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6629 | exec_sentinel_error_handler); | |
4da2f5be RS |
6630 | |
6631 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6632 | restore_search_regs (); |
4da2f5be | 6633 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6634 | |
6635 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6636 | |
6637 | /* Restore waiting_for_user_input_p as it was | |
6638 | when we were called, in case the filter clobbered it. */ | |
6639 | waiting_for_user_input_p = waiting; | |
6640 | ||
7973cfa8 | 6641 | #if 0 |
dfc21838 RS |
6642 | if (! EQ (Fcurrent_buffer (), obuffer) |
6643 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6644 | #endif |
927e08be RS |
6645 | /* But do it only if the caller is actually going to read events. |
6646 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6647 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6648 | if (waiting_for_user_input_p == -1) |
6649 | record_asynch_buffer_change (); | |
8fb3cf64 | 6650 | |
2ea6d561 | 6651 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6652 | } |
6653 | ||
6654 | /* Report all recent events of a change in process status | |
6655 | (either run the sentinel or output a message). | |
b50fe468 RS |
6656 | This is usually done while Emacs is waiting for keyboard input |
6657 | but can be done at other times. */ | |
d0d6b7c5 | 6658 | |
ff6daed3 | 6659 | static void |
d3da34e0 | 6660 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6661 | { |
6662 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6663 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6664 | struct gcpro gcpro1, gcpro2; |
6665 | ||
2e4149a8 KH |
6666 | tail = Qnil; |
6667 | msg = Qnil; | |
d0d6b7c5 JB |
6668 | /* We need to gcpro tail; if read_process_output calls a filter |
6669 | which deletes a process and removes the cons to which tail points | |
6670 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6671 | reference. */ | |
6672 | GCPRO2 (tail, msg); | |
6673 | ||
30623085 RS |
6674 | /* Set this now, so that if new processes are created by sentinels |
6675 | that we run, we get called again to handle their status changes. */ | |
6676 | update_tick = process_tick; | |
6677 | ||
99784d63 | 6678 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6679 | { |
30623085 RS |
6680 | Lisp_Object symbol; |
6681 | register struct Lisp_Process *p; | |
6682 | ||
99784d63 | 6683 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6684 | p = XPROCESS (proc); |
6685 | ||
60f0fb11 | 6686 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6687 | { |
60f0fb11 | 6688 | p->update_tick = p->tick; |
d0d6b7c5 | 6689 | |
30623085 | 6690 | /* If process is still active, read any output that remains. */ |
4d2b044c DA |
6691 | while (! EQ (p->filter, Qt) |
6692 | && ! EQ (p->status, Qconnect) | |
6693 | && ! EQ (p->status, Qlisten) | |
d888760c | 6694 | /* Network or serial process not stopped: */ |
4d2b044c | 6695 | && ! EQ (p->command, Qt) |
60f0fb11 | 6696 | && p->infd >= 0 |
ff6daed3 | 6697 | && p != deleting_process |
60f0fb11 | 6698 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6699 | |
4d2b044c | 6700 | buffer = p->buffer; |
d0d6b7c5 | 6701 | |
30623085 | 6702 | /* Get the text to use for the message. */ |
6bfd98e7 | 6703 | if (p->raw_status_new) |
30623085 | 6704 | update_status (p); |
116c423c | 6705 | msg = status_message (p); |
d0d6b7c5 | 6706 | |
30623085 | 6707 | /* If process is terminated, deactivate it or delete it. */ |
4d2b044c DA |
6708 | symbol = p->status; |
6709 | if (CONSP (p->status)) | |
6710 | symbol = XCAR (p->status); | |
d0d6b7c5 | 6711 | |
30623085 RS |
6712 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6713 | || EQ (symbol, Qclosed)) | |
6714 | { | |
6715 | if (delete_exited_processes) | |
6716 | remove_process (proc); | |
6717 | else | |
6718 | deactivate_process (proc); | |
6719 | } | |
d0d6b7c5 | 6720 | |
0ad61fe7 RS |
6721 | /* The actions above may have further incremented p->tick. |
6722 | So set p->update_tick again | |
6723 | so that an error in the sentinel will not cause | |
6724 | this code to be run again. */ | |
60f0fb11 | 6725 | p->update_tick = p->tick; |
30623085 | 6726 | /* Now output the message suitably. */ |
4d2b044c | 6727 | if (!NILP (p->sentinel)) |
30623085 RS |
6728 | exec_sentinel (proc, msg); |
6729 | /* Don't bother with a message in the buffer | |
6730 | when a process becomes runnable. */ | |
6731 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6732 | { | |
01f5787b | 6733 | Lisp_Object tem; |
30623085 | 6734 | struct buffer *old = current_buffer; |
d311d28c PE |
6735 | ptrdiff_t opoint, opoint_byte; |
6736 | ptrdiff_t before, before_byte; | |
2e4149a8 | 6737 | |
30623085 RS |
6738 | /* Avoid error if buffer is deleted |
6739 | (probably that's why the process is dead, too) */ | |
4b4deea2 | 6740 | if (NILP (BVAR (XBUFFER (buffer), name))) |
30623085 RS |
6741 | continue; |
6742 | Fset_buffer (buffer); | |
12ca5cdf | 6743 | |
6ec8bbd2 | 6744 | opoint = PT; |
d8a2934e | 6745 | opoint_byte = PT_BYTE; |
30623085 RS |
6746 | /* Insert new output into buffer |
6747 | at the current end-of-output marker, | |
6748 | thus preserving logical ordering of input and output. */ | |
4d2b044c DA |
6749 | if (XMARKER (p->mark)->buffer) |
6750 | Fgoto_char (p->mark); | |
30623085 | 6751 | else |
d8a2934e | 6752 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6753 | |
6754 | before = PT; | |
d8a2934e | 6755 | before_byte = PT_BYTE; |
30623085 | 6756 | |
4b4deea2 | 6757 | tem = BVAR (current_buffer, read_only); |
39eb03f1 | 6758 | bset_read_only (current_buffer, Qnil); |
30623085 | 6759 | insert_string ("\nProcess "); |
21238f11 | 6760 | { /* FIXME: temporary kludge */ |
4d2b044c | 6761 | Lisp_Object tem2 = p->name; Finsert (1, &tem2); } |
30623085 RS |
6762 | insert_string (" "); |
6763 | Finsert (1, &msg); | |
39eb03f1 | 6764 | bset_read_only (current_buffer, tem); |
4d2b044c | 6765 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6766 | |
12ca5cdf | 6767 | if (opoint >= before) |
d8a2934e RS |
6768 | SET_PT_BOTH (opoint + (PT - before), |
6769 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6770 | else |
d8a2934e | 6771 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6772 | |
30623085 | 6773 | set_buffer_internal (old); |
d0d6b7c5 | 6774 | } |
30623085 RS |
6775 | } |
6776 | } /* end for */ | |
d0d6b7c5 JB |
6777 | |
6778 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6779 | UNGCPRO; |
6780 | } | |
0fa1789e KH |
6781 | |
6782 | \f | |
6783 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6784 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6785 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6786 | DECODING will be used to decode subprocess output and ENCODING to | |
6787 | encode subprocess input. */) | |
5842a27b | 6788 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6789 | { |
6790 | register struct Lisp_Process *p; | |
6791 | ||
f3d9532b JB |
6792 | CHECK_PROCESS (process); |
6793 | p = XPROCESS (process); | |
60f0fb11 | 6794 | if (p->infd < 0) |
4d2b044c | 6795 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6796 | if (p->outfd < 0) |
4d2b044c | 6797 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6798 | Fcheck_coding_system (decoding); |
6799 | Fcheck_coding_system (encoding); | |
76d812bb | 6800 | encoding = coding_inherit_eol_type (encoding, Qnil); |
6a09a33b PE |
6801 | pset_decode_coding_system (p, decoding); |
6802 | pset_encode_coding_system (p, encoding); | |
f3d9532b | 6803 | setup_process_coding_systems (process); |
0fa1789e KH |
6804 | |
6805 | return Qnil; | |
6806 | } | |
6807 | ||
6808 | DEFUN ("process-coding-system", | |
6809 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6810 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6811 | (register Lisp_Object process) |
0fa1789e | 6812 | { |
f3d9532b | 6813 | CHECK_PROCESS (process); |
4d2b044c DA |
6814 | return Fcons (XPROCESS (process)->decode_coding_system, |
6815 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6816 | } |
03f04413 KH |
6817 | |
6818 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6819 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6820 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6821 | If FLAG is non-nil, the filter is given multibyte strings. | |
6822 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6823 | all character code conversion except for end-of-line conversion is |
6824 | suppressed. */) | |
5842a27b | 6825 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6826 | { |
6827 | register struct Lisp_Process *p; | |
6828 | ||
f3d9532b JB |
6829 | CHECK_PROCESS (process); |
6830 | p = XPROCESS (process); | |
5431bd6a | 6831 | if (NILP (flag)) |
6a09a33b PE |
6832 | pset_decode_coding_system |
6833 | (p, raw_text_coding_system (p->decode_coding_system)); | |
f3d9532b | 6834 | setup_process_coding_systems (process); |
03f04413 KH |
6835 | |
6836 | return Qnil; | |
6837 | } | |
6838 | ||
6839 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6840 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6841 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6842 | (Lisp_Object process) |
03f04413 KH |
6843 | { |
6844 | register struct Lisp_Process *p; | |
5431bd6a | 6845 | struct coding_system *coding; |
03f04413 | 6846 | |
f3d9532b JB |
6847 | CHECK_PROCESS (process); |
6848 | p = XPROCESS (process); | |
5431bd6a SM |
6849 | coding = proc_decode_coding_system[p->infd]; |
6850 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6851 | } |
6852 | ||
6853 | ||
d0d6b7c5 | 6854 | \f |
cb768704 | 6855 | |
4475bec4 PE |
6856 | # ifdef HAVE_GPM |
6857 | ||
994d9841 | 6858 | void |
d3da34e0 | 6859 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6860 | { |
3fad2ad2 | 6861 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6862 | } |
6863 | ||
994d9841 | 6864 | void |
d3da34e0 | 6865 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6866 | { |
3fad2ad2 | 6867 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6868 | } |
6869 | ||
4475bec4 PE |
6870 | # endif |
6871 | ||
006c5daa PE |
6872 | # ifdef SIGIO |
6873 | ||
a69281ff RS |
6874 | /* Return nonzero if *MASK has a bit set |
6875 | that corresponds to one of the keyboard input descriptors. */ | |
6876 | ||
ff6daed3 | 6877 | static int |
d3da34e0 | 6878 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6879 | { |
6880 | int fd; | |
6881 | ||
3fad2ad2 | 6882 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6883 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6884 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6885 | return 1; | |
6886 | ||
6887 | return 0; | |
6888 | } | |
006c5daa | 6889 | # endif |
934e2a68 | 6890 | |
f388c88a | 6891 | #else /* not subprocesses */ |
934e2a68 | 6892 | |
f388c88a EZ |
6893 | /* Defined on msdos.c. */ |
6894 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
0d23c240 | 6895 | EMACS_TIME *, void *); |
934e2a68 | 6896 | |
f388c88a EZ |
6897 | /* Implementation of wait_reading_process_output, assuming that there |
6898 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6899 | |
f388c88a | 6900 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6901 | |
d188e26b | 6902 | TIME_LIMIT is: |
d35af63c PE |
6903 | timeout in seconds |
6904 | If negative, gobble data immediately available but don't wait for any. | |
6905 | ||
d188e26b | 6906 | NSECS is: |
d35af63c PE |
6907 | an additional duration to wait, measured in nanoseconds |
6908 | If TIME_LIMIT is zero, then: | |
d188e26b PE |
6909 | If NSECS == 0, there is no limit. |
6910 | If NSECS > 0, the timeout consists of NSECS only. | |
d35af63c | 6911 | If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative. |
934e2a68 | 6912 | |
a0bee46f | 6913 | READ_KBD is: |
f388c88a EZ |
6914 | 0 to ignore keyboard input, or |
6915 | 1 to return when input is available, or | |
6916 | -1 means caller will actually read the input, so don't throw to | |
6917 | the quit handler. | |
934e2a68 | 6918 | |
f388c88a EZ |
6919 | see full version for other parameters. We know that wait_proc will |
6920 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6921 | |
d188e26b | 6922 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
f388c88a | 6923 | output that arrives. |
934e2a68 | 6924 | |
f388c88a EZ |
6925 | Return true if we received input from any process. */ |
6926 | ||
6927 | int | |
d35af63c | 6928 | wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, |
1408902e EZ |
6929 | int do_display, |
6930 | Lisp_Object wait_for_cell, | |
6931 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6932 | { |
f388c88a EZ |
6933 | register int nfds; |
6934 | EMACS_TIME end_time, timeout; | |
d0d6b7c5 | 6935 | |
d35af63c PE |
6936 | if (time_limit < 0) |
6937 | { | |
6938 | time_limit = 0; | |
6939 | nsecs = -1; | |
6940 | } | |
6941 | else if (TYPE_MAXIMUM (time_t) < time_limit) | |
6942 | time_limit = TYPE_MAXIMUM (time_t); | |
6943 | ||
f388c88a | 6944 | /* What does time_limit really mean? */ |
216ee680 | 6945 | if (time_limit || 0 < nsecs) |
f388c88a | 6946 | { |
e9a9ae03 PE |
6947 | timeout = make_emacs_time (time_limit, nsecs); |
6948 | end_time = add_emacs_time (current_emacs_time (), timeout); | |
f388c88a | 6949 | } |
84af9896 | 6950 | |
f388c88a EZ |
6951 | /* Turn off periodic alarms (in case they are in use) |
6952 | and then turn off any other atimers, | |
6953 | because the select emulator uses alarms. */ | |
6954 | stop_polling (); | |
6955 | turn_on_atimers (0); | |
d0d6b7c5 | 6956 | |
f388c88a EZ |
6957 | while (1) |
6958 | { | |
6959 | int timeout_reduced_for_timers = 0; | |
a0bee46f PE |
6960 | SELECT_TYPE waitchannels; |
6961 | int xerrno; | |
dd2281ae | 6962 | |
f388c88a EZ |
6963 | /* If calling from keyboard input, do not quit |
6964 | since we want to return C-g as an input character. | |
6965 | Otherwise, do pending quit if requested. */ | |
6966 | if (read_kbd >= 0) | |
6967 | QUIT; | |
bad49fc7 | 6968 | |
f388c88a EZ |
6969 | /* Exit now if the cell we're waiting for became non-nil. */ |
6970 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6971 | break; | |
0a65b032 | 6972 | |
bae8d137 RS |
6973 | /* Compute time from now till when time limit is up */ |
6974 | /* Exit if already run out */ | |
d35af63c | 6975 | if (nsecs < 0) |
52fd88d3 | 6976 | { |
216ee680 | 6977 | /* A negative timeout means |
52fd88d3 EZ |
6978 | gobble output available now |
6979 | but don't wait at all. */ | |
6980 | ||
e9a9ae03 | 6981 | timeout = make_emacs_time (0, 0); |
52fd88d3 | 6982 | } |
216ee680 | 6983 | else if (time_limit || 0 < nsecs) |
6720a7fb | 6984 | { |
e9a9ae03 PE |
6985 | EMACS_TIME now = current_emacs_time (); |
6986 | if (EMACS_TIME_LE (end_time, now)) | |
6720a7fb | 6987 | break; |
e9a9ae03 | 6988 | timeout = sub_emacs_time (end_time, now); |
6720a7fb | 6989 | } |
52fd88d3 EZ |
6990 | else |
6991 | { | |
e9a9ae03 | 6992 | timeout = make_emacs_time (100000, 0); |
52fd88d3 | 6993 | } |
6720a7fb | 6994 | |
bae8d137 RS |
6995 | /* If our caller will not immediately handle keyboard events, |
6996 | run timer events directly. | |
6997 | (Callers that will immediately read keyboard events | |
6998 | call timer_delay on their own.) */ | |
f3fbd155 | 6999 | if (NILP (wait_for_cell)) |
bae8d137 RS |
7000 | { |
7001 | EMACS_TIME timer_delay; | |
0a65b032 | 7002 | |
9baacf76 | 7003 | do |
0a65b032 | 7004 | { |
9baacf76 | 7005 | int old_timers_run = timers_run; |
f868cd8a | 7006 | timer_delay = timer_check (); |
9baacf76 GM |
7007 | if (timers_run != old_timers_run && do_display) |
7008 | /* We must retry, since a timer may have requeued itself | |
7009 | and that could alter the time delay. */ | |
3007ebfb | 7010 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
7011 | else |
7012 | break; | |
0a65b032 | 7013 | } |
9baacf76 | 7014 | while (!detect_input_pending ()); |
0a65b032 | 7015 | |
52fd88d3 | 7016 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7017 | if (read_kbd != 0 |
52fd88d3 EZ |
7018 | && requeued_events_pending_p ()) |
7019 | break; | |
7020 | ||
d35af63c | 7021 | if (EMACS_TIME_VALID_P (timer_delay) && 0 <= nsecs) |
bae8d137 | 7022 | { |
d35af63c | 7023 | if (EMACS_TIME_LT (timer_delay, timeout)) |
bae8d137 | 7024 | { |
f694e5d2 | 7025 | timeout = timer_delay; |
bae8d137 RS |
7026 | timeout_reduced_for_timers = 1; |
7027 | } | |
7028 | } | |
7029 | } | |
7030 | ||
6720a7fb JB |
7031 | /* Cause C-g and alarm signals to take immediate action, |
7032 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7033 | if (read_kbd < 0) |
6720a7fb JB |
7034 | set_waiting_for_input (&timeout); |
7035 | ||
ff11dfa1 | 7036 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7037 | reprocess its display stuff. */ |
5164ee8e | 7038 | if (frame_garbaged && do_display) |
0a65b032 RS |
7039 | { |
7040 | clear_waiting_for_input (); | |
3007ebfb | 7041 | redisplay_preserve_echo_area (15); |
b89a415a | 7042 | if (read_kbd < 0) |
0a65b032 RS |
7043 | set_waiting_for_input (&timeout); |
7044 | } | |
6720a7fb | 7045 | |
a0bee46f PE |
7046 | /* Wait till there is something to do. */ |
7047 | FD_ZERO (&waitchannels); | |
b89a415a | 7048 | if (read_kbd && detect_input_pending ()) |
a0bee46f PE |
7049 | nfds = 0; |
7050 | else | |
1861b214 | 7051 | { |
a0bee46f PE |
7052 | if (read_kbd || !NILP (wait_for_cell)) |
7053 | FD_SET (0, &waitchannels); | |
7054 | nfds = pselect (1, &waitchannels, NULL, NULL, &timeout, NULL); | |
1861b214 | 7055 | } |
f694e5d2 KH |
7056 | |
7057 | xerrno = errno; | |
6720a7fb JB |
7058 | |
7059 | /* Make C-g and alarm signals set flags again */ | |
7060 | clear_waiting_for_input (); | |
7061 | ||
7062 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7063 | do_pending_window_change (0); |
6720a7fb | 7064 | |
d35af63c | 7065 | if ((time_limit || nsecs) && nfds == 0 && ! timeout_reduced_for_timers) |
f694e5d2 KH |
7066 | /* We waited the full specified time, so return now. */ |
7067 | break; | |
7068 | ||
6720a7fb JB |
7069 | if (nfds == -1) |
7070 | { | |
7071 | /* If the system call was interrupted, then go around the | |
7072 | loop again. */ | |
f694e5d2 | 7073 | if (xerrno == EINTR) |
8db121c4 | 7074 | FD_ZERO (&waitchannels); |
f694e5d2 | 7075 | else |
68c45bf0 | 7076 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 7077 | } |
6720a7fb | 7078 | |
f694e5d2 KH |
7079 | /* Check for keyboard input */ |
7080 | ||
b89a415a | 7081 | if (read_kbd |
78c1afb6 | 7082 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7083 | { |
78c1afb6 | 7084 | swallow_events (do_display); |
f694e5d2 | 7085 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7086 | break; |
78c1afb6 EZ |
7087 | } |
7088 | ||
52fd88d3 | 7089 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7090 | if (read_kbd |
52fd88d3 EZ |
7091 | && requeued_events_pending_p ()) |
7092 | break; | |
7093 | ||
f854a00b RS |
7094 | /* If wait_for_cell. check for keyboard input |
7095 | but don't run any timers. | |
7096 | ??? (It seems wrong to me to check for keyboard | |
7097 | input at all when wait_for_cell, but the code | |
7098 | has been this way since July 1994. | |
7099 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7100 | if (! NILP (wait_for_cell) |
f854a00b RS |
7101 | && detect_input_pending ()) |
7102 | { | |
7103 | swallow_events (do_display); | |
7104 | if (detect_input_pending ()) | |
7105 | break; | |
7106 | } | |
7107 | ||
0a65b032 | 7108 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7109 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7110 | break; |
6720a7fb JB |
7111 | } |
7112 | ||
a87b802f JB |
7113 | start_polling (); |
7114 | ||
6720a7fb JB |
7115 | return 0; |
7116 | } | |
7117 | ||
f388c88a EZ |
7118 | #endif /* not subprocesses */ |
7119 | ||
7120 | /* The following functions are needed even if async subprocesses are | |
7121 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 7122 | |
01faa934 DN |
7123 | /* Add DESC to the set of keyboard input descriptors. */ |
7124 | ||
7125 | void | |
7126 | add_keyboard_wait_descriptor (int desc) | |
7127 | { | |
bf05eed6 | 7128 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
7129 | FD_SET (desc, &input_wait_mask); |
7130 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
7131 | if (desc > max_input_desc) |
7132 | max_input_desc = desc; | |
bf05eed6 | 7133 | #endif |
01faa934 DN |
7134 | } |
7135 | ||
7136 | /* From now on, do not expect DESC to give keyboard input. */ | |
7137 | ||
7138 | void | |
7139 | delete_keyboard_wait_descriptor (int desc) | |
7140 | { | |
bf05eed6 | 7141 | #ifdef subprocesses |
01faa934 | 7142 | int fd; |
3fad2ad2 | 7143 | int lim = max_input_desc; |
01faa934 DN |
7144 | |
7145 | FD_CLR (desc, &input_wait_mask); | |
7146 | FD_CLR (desc, &non_process_wait_mask); | |
7147 | ||
3fad2ad2 | 7148 | if (desc == max_input_desc) |
01faa934 | 7149 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
7150 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
7151 | max_input_desc = fd; | |
bf05eed6 | 7152 | #endif |
01faa934 DN |
7153 | } |
7154 | ||
fc549af9 EZ |
7155 | /* Setup coding systems of PROCESS. */ |
7156 | ||
7157 | void | |
7158 | setup_process_coding_systems (Lisp_Object process) | |
7159 | { | |
7160 | #ifdef subprocesses | |
7161 | struct Lisp_Process *p = XPROCESS (process); | |
7162 | int inch = p->infd; | |
7163 | int outch = p->outfd; | |
7164 | Lisp_Object coding_system; | |
7165 | ||
7166 | if (inch < 0 || outch < 0) | |
7167 | return; | |
7168 | ||
7169 | if (!proc_decode_coding_system[inch]) | |
38182d90 | 7170 | proc_decode_coding_system[inch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c DA |
7171 | coding_system = p->decode_coding_system; |
7172 | if (! NILP (p->filter)) | |
fc549af9 | 7173 | ; |
4d2b044c | 7174 | else if (BUFFERP (p->buffer)) |
fc549af9 | 7175 | { |
4d2b044c | 7176 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
7177 | coding_system = raw_text_coding_system (coding_system); |
7178 | } | |
7179 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7180 | ||
7181 | if (!proc_encode_coding_system[outch]) | |
38182d90 | 7182 | proc_encode_coding_system[outch] = xmalloc (sizeof (struct coding_system)); |
4d2b044c | 7183 | setup_coding_system (p->encode_coding_system, |
fc549af9 EZ |
7184 | proc_encode_coding_system[outch]); |
7185 | #endif | |
7186 | } | |
7187 | ||
7188 | /* Close all descriptors currently in use for communication | |
7189 | with subprocess. This is used in a newly-forked subprocess | |
7190 | to get rid of irrelevant descriptors. */ | |
7191 | ||
7192 | void | |
7193 | close_process_descs (void) | |
7194 | { | |
7195 | #ifndef DOS_NT | |
7196 | int i; | |
7197 | for (i = 0; i < MAXDESC; i++) | |
7198 | { | |
7199 | Lisp_Object process; | |
7200 | process = chan_process[i]; | |
7201 | if (!NILP (process)) | |
7202 | { | |
7203 | int in = XPROCESS (process)->infd; | |
7204 | int out = XPROCESS (process)->outfd; | |
7205 | if (in >= 0) | |
7206 | emacs_close (in); | |
7207 | if (out >= 0 && in != out) | |
7208 | emacs_close (out); | |
7209 | } | |
7210 | } | |
7211 | #endif | |
7212 | } | |
7213 | ||
6720a7fb | 7214 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7215 | doc: /* Return the (or a) process associated with BUFFER. |
7216 | BUFFER may be a buffer or the name of one. */) | |
7217 | (register Lisp_Object buffer) | |
6720a7fb | 7218 | { |
f388c88a EZ |
7219 | #ifdef subprocesses |
7220 | register Lisp_Object buf, tail, proc; | |
7221 | ||
7222 | if (NILP (buffer)) return Qnil; | |
7223 | buf = Fget_buffer (buffer); | |
7224 | if (NILP (buf)) return Qnil; | |
7225 | ||
7226 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7227 | { | |
7228 | proc = Fcdr (XCAR (tail)); | |
4d2b044c | 7229 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
f388c88a EZ |
7230 | return proc; |
7231 | } | |
7232 | #endif /* subprocesses */ | |
6720a7fb JB |
7233 | return Qnil; |
7234 | } | |
7235 | ||
52a1b894 | 7236 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7237 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7238 | 1, 1, 0, | |
f388c88a EZ |
7239 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7240 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7241 | associated with PROCESS will inherit the coding system used to decode | |
7242 | the process output. */) | |
5842a27b | 7243 | (register Lisp_Object process) |
52a1b894 | 7244 | { |
f388c88a EZ |
7245 | #ifdef subprocesses |
7246 | CHECK_PROCESS (process); | |
7247 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7248 | #else | |
52a1b894 EZ |
7249 | /* Ignore the argument and return the value of |
7250 | inherit-process-coding-system. */ | |
7251 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7252 | #endif |
52a1b894 EZ |
7253 | } |
7254 | ||
6720a7fb | 7255 | /* Kill all processes associated with `buffer'. |
f388c88a | 7256 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7257 | |
d9bb0c32 | 7258 | void |
f388c88a | 7259 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7260 | { |
f388c88a EZ |
7261 | #ifdef subprocesses |
7262 | Lisp_Object tail, proc; | |
7263 | ||
7264 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7265 | { | |
7266 | proc = XCDR (XCAR (tail)); | |
7267 | if (PROCESSP (proc) | |
4d2b044c | 7268 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
f388c88a EZ |
7269 | { |
7270 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7271 | Fdelete_process (proc); | |
7272 | else if (XPROCESS (proc)->infd >= 0) | |
7273 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7274 | } | |
7275 | } | |
7276 | #else /* subprocesses */ | |
7277 | /* Since we have no subprocesses, this does nothing. */ | |
7278 | #endif /* subprocesses */ | |
6720a7fb JB |
7279 | } |
7280 | ||
a7ca3326 | 7281 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, |
16a97296 | 7282 | Swaiting_for_user_input_p, 0, 0, 0, |
77defa9a EZ |
7283 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
7284 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7285 | (void) | |
7286 | { | |
7287 | #ifdef subprocesses | |
7288 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7289 | #else | |
7290 | return Qnil; | |
7291 | #endif | |
7292 | } | |
7293 | ||
d568829b EZ |
7294 | /* Stop reading input from keyboard sources. */ |
7295 | ||
7296 | void | |
7297 | hold_keyboard_input (void) | |
7298 | { | |
7299 | kbd_is_on_hold = 1; | |
7300 | } | |
7301 | ||
7302 | /* Resume reading input from keyboard sources. */ | |
7303 | ||
7304 | void | |
7305 | unhold_keyboard_input (void) | |
7306 | { | |
7307 | kbd_is_on_hold = 0; | |
7308 | } | |
7309 | ||
7310 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7311 | ||
7312 | int | |
7313 | kbd_on_hold_p (void) | |
7314 | { | |
7315 | return kbd_is_on_hold; | |
7316 | } | |
7317 | ||
f388c88a EZ |
7318 | \f |
7319 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7320 | ||
934e2a68 EZ |
7321 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7322 | 0, 0, 0, | |
7323 | doc: /* Return a list of numerical process IDs of all running processes. | |
7324 | If this functionality is unsupported, return nil. | |
7325 | ||
f388c88a EZ |
7326 | See `process-attributes' for getting attributes of a process given its ID. */) |
7327 | (void) | |
7328 | { | |
7329 | return list_system_processes (); | |
7330 | } | |
7331 | ||
7332 | DEFUN ("process-attributes", Fprocess_attributes, | |
7333 | Sprocess_attributes, 1, 1, 0, | |
7334 | doc: /* Return attributes of the process given by its PID, a number. | |
7335 | ||
7336 | Value is an alist where each element is a cons cell of the form | |
7337 | ||
7338 | \(KEY . VALUE) | |
7339 | ||
7340 | If this functionality is unsupported, the value is nil. | |
7341 | ||
7342 | See `list-system-processes' for getting a list of all process IDs. | |
7343 | ||
7344 | The KEYs of the attributes that this function may return are listed | |
7345 | below, together with the type of the associated VALUE (in parentheses). | |
7346 | Not all platforms support all of these attributes; unsupported | |
7347 | attributes will not appear in the returned alist. | |
7348 | Unless explicitly indicated otherwise, numbers can have either | |
7349 | integer or floating point values. | |
7350 | ||
7351 | euid -- Effective user User ID of the process (number) | |
7352 | user -- User name corresponding to euid (string) | |
7353 | egid -- Effective user Group ID of the process (number) | |
7354 | group -- Group name corresponding to egid (string) | |
7355 | comm -- Command name (executable name only) (string) | |
7356 | state -- Process state code, such as "S", "R", or "T" (string) | |
7357 | ppid -- Parent process ID (number) | |
7358 | pgrp -- Process group ID (number) | |
7359 | sess -- Session ID, i.e. process ID of session leader (number) | |
7360 | ttname -- Controlling tty name (string) | |
7361 | tpgid -- ID of foreground process group on the process's tty (number) | |
7362 | minflt -- number of minor page faults (number) | |
7363 | majflt -- number of major page faults (number) | |
7364 | cminflt -- cumulative number of minor page faults (number) | |
7365 | cmajflt -- cumulative number of major page faults (number) | |
d35af63c PE |
7366 | utime -- user time used by the process, in (current-time) format, |
7367 | which is a list of integers (HIGH LOW USEC PSEC) | |
7368 | stime -- system time used by the process (current-time) | |
7369 | time -- sum of utime and stime (current-time) | |
7370 | cutime -- user time used by the process and its children (current-time) | |
7371 | cstime -- system time used by the process and its children (current-time) | |
7372 | ctime -- sum of cutime and cstime (current-time) | |
f388c88a EZ |
7373 | pri -- priority of the process (number) |
7374 | nice -- nice value of the process (number) | |
7375 | thcount -- process thread count (number) | |
d35af63c | 7376 | start -- time the process started (current-time) |
f388c88a EZ |
7377 | vsize -- virtual memory size of the process in KB's (number) |
7378 | rss -- resident set size of the process in KB's (number) | |
d35af63c | 7379 | etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format |
f388c88a EZ |
7380 | pcpu -- percents of CPU time used by the process (floating-point number) |
7381 | pmem -- percents of total physical memory used by process's resident set | |
7382 | (floating-point number) | |
7383 | args -- command line which invoked the process (string). */) | |
7384 | ( Lisp_Object pid) | |
7385 | { | |
7386 | return system_process_attributes (pid); | |
7387 | } | |
7388 | ||
7389 | \f | |
b82da769 GM |
7390 | /* This is not called "init_process" because that is the name of a |
7391 | Mach system call, so it would cause problems on Darwin systems. */ | |
f388c88a | 7392 | void |
b82da769 | 7393 | init_process_emacs (void) |
f388c88a EZ |
7394 | { |
7395 | #ifdef subprocesses | |
7396 | register int i; | |
7397 | ||
7398 | inhibit_sentinels = 0; | |
7399 | ||
7400 | #ifdef SIGCHLD | |
7401 | #ifndef CANNOT_DUMP | |
7402 | if (! noninteractive || initialized) | |
7403 | #endif | |
7404 | signal (SIGCHLD, sigchld_handler); | |
7405 | #endif | |
7406 | ||
7407 | FD_ZERO (&input_wait_mask); | |
7408 | FD_ZERO (&non_keyboard_wait_mask); | |
7409 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7410 | FD_ZERO (&write_mask); |
f388c88a | 7411 | max_process_desc = 0; |
3fad2ad2 | 7412 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7413 | |
7414 | #ifdef NON_BLOCKING_CONNECT | |
7415 | FD_ZERO (&connect_wait_mask); | |
7416 | num_pending_connects = 0; | |
7417 | #endif | |
7418 | ||
7419 | #ifdef ADAPTIVE_READ_BUFFERING | |
7420 | process_output_delay_count = 0; | |
7421 | process_output_skip = 0; | |
7422 | #endif | |
7423 | ||
7424 | /* Don't do this, it caused infinite select loops. The display | |
7425 | method should call add_keyboard_wait_descriptor on stdin if it | |
7426 | needs that. */ | |
7427 | #if 0 | |
7428 | FD_SET (0, &input_wait_mask); | |
7429 | #endif | |
7430 | ||
7431 | Vprocess_alist = Qnil; | |
7432 | #ifdef SIGCHLD | |
7433 | deleted_pid_list = Qnil; | |
7434 | #endif | |
7435 | for (i = 0; i < MAXDESC; i++) | |
7436 | { | |
7437 | chan_process[i] = Qnil; | |
7438 | proc_buffered_char[i] = -1; | |
7439 | } | |
7440 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7441 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7442 | #ifdef DATAGRAM_SOCKETS | |
7443 | memset (datagram_address, 0, sizeof datagram_address); | |
7444 | #endif | |
7445 | ||
f388c88a EZ |
7446 | { |
7447 | Lisp_Object subfeatures = Qnil; | |
7448 | const struct socket_options *sopt; | |
7449 | ||
7450 | #define ADD_SUBFEATURE(key, val) \ | |
7451 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7452 | ||
7453 | #ifdef NON_BLOCKING_CONNECT | |
7454 | ADD_SUBFEATURE (QCnowait, Qt); | |
7455 | #endif | |
7456 | #ifdef DATAGRAM_SOCKETS | |
7457 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7458 | #endif | |
7459 | #ifdef HAVE_SEQPACKET | |
7460 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7461 | #endif | |
7462 | #ifdef HAVE_LOCAL_SOCKETS | |
7463 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7464 | #endif | |
7465 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7466 | #ifdef AF_INET6 | |
7467 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7468 | #endif | |
7469 | #ifdef HAVE_GETSOCKNAME | |
7470 | ADD_SUBFEATURE (QCservice, Qt); | |
7471 | #endif | |
5e617bc2 | 7472 | #if defined (O_NONBLOCK) || defined (O_NDELAY) |
f388c88a EZ |
7473 | ADD_SUBFEATURE (QCserver, Qt); |
7474 | #endif | |
7475 | ||
7476 | for (sopt = socket_options; sopt->name; sopt++) | |
7477 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7478 | ||
7479 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7480 | } | |
f388c88a EZ |
7481 | |
7482 | #if defined (DARWIN_OS) | |
7483 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7484 | processes. As such, we only change the default value. */ | |
7485 | if (initialized) | |
7486 | { | |
f44bd759 PE |
7487 | char const *release = (STRINGP (Voperating_system_release) |
7488 | ? SSDATA (Voperating_system_release) | |
7489 | : 0); | |
6de0e799 | 7490 | if (!release || !release[0] || (release[0] < '7' && release[1] == '.')) { |
f388c88a EZ |
7491 | Vprocess_connection_type = Qnil; |
7492 | } | |
7493 | } | |
7494 | #endif | |
7495 | #endif /* subprocesses */ | |
7496 | kbd_is_on_hold = 0; | |
7497 | } | |
7498 | ||
7499 | void | |
7500 | syms_of_process (void) | |
7501 | { | |
7502 | #ifdef subprocesses | |
7503 | ||
cd3520a4 JB |
7504 | DEFSYM (Qprocessp, "processp"); |
7505 | DEFSYM (Qrun, "run"); | |
7506 | DEFSYM (Qstop, "stop"); | |
7507 | DEFSYM (Qsignal, "signal"); | |
f388c88a EZ |
7508 | |
7509 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7510 | here again. | |
934e2a68 | 7511 | |
f388c88a EZ |
7512 | Qexit = intern_c_string ("exit"); |
7513 | staticpro (&Qexit); */ | |
934e2a68 | 7514 | |
cd3520a4 JB |
7515 | DEFSYM (Qopen, "open"); |
7516 | DEFSYM (Qclosed, "closed"); | |
7517 | DEFSYM (Qconnect, "connect"); | |
7518 | DEFSYM (Qfailed, "failed"); | |
7519 | DEFSYM (Qlisten, "listen"); | |
7520 | DEFSYM (Qlocal, "local"); | |
7521 | DEFSYM (Qipv4, "ipv4"); | |
f388c88a | 7522 | #ifdef AF_INET6 |
cd3520a4 JB |
7523 | DEFSYM (Qipv6, "ipv6"); |
7524 | #endif | |
7525 | DEFSYM (Qdatagram, "datagram"); | |
7526 | DEFSYM (Qseqpacket, "seqpacket"); | |
7527 | ||
7528 | DEFSYM (QCport, ":port"); | |
7529 | DEFSYM (QCspeed, ":speed"); | |
7530 | DEFSYM (QCprocess, ":process"); | |
7531 | ||
7532 | DEFSYM (QCbytesize, ":bytesize"); | |
7533 | DEFSYM (QCstopbits, ":stopbits"); | |
7534 | DEFSYM (QCparity, ":parity"); | |
7535 | DEFSYM (Qodd, "odd"); | |
7536 | DEFSYM (Qeven, "even"); | |
7537 | DEFSYM (QCflowcontrol, ":flowcontrol"); | |
7538 | DEFSYM (Qhw, "hw"); | |
7539 | DEFSYM (Qsw, "sw"); | |
7540 | DEFSYM (QCsummary, ":summary"); | |
7541 | ||
7542 | DEFSYM (Qreal, "real"); | |
7543 | DEFSYM (Qnetwork, "network"); | |
7544 | DEFSYM (Qserial, "serial"); | |
7545 | DEFSYM (QCbuffer, ":buffer"); | |
7546 | DEFSYM (QChost, ":host"); | |
7547 | DEFSYM (QCservice, ":service"); | |
7548 | DEFSYM (QClocal, ":local"); | |
7549 | DEFSYM (QCremote, ":remote"); | |
7550 | DEFSYM (QCcoding, ":coding"); | |
7551 | DEFSYM (QCserver, ":server"); | |
7552 | DEFSYM (QCnowait, ":nowait"); | |
7553 | DEFSYM (QCsentinel, ":sentinel"); | |
7554 | DEFSYM (QClog, ":log"); | |
7555 | DEFSYM (QCnoquery, ":noquery"); | |
7556 | DEFSYM (QCstop, ":stop"); | |
7557 | DEFSYM (QCoptions, ":options"); | |
7558 | DEFSYM (QCplist, ":plist"); | |
7559 | ||
7560 | DEFSYM (Qlast_nonmenu_event, "last-nonmenu-event"); | |
934e2a68 | 7561 | |
f388c88a EZ |
7562 | staticpro (&Vprocess_alist); |
7563 | #ifdef SIGCHLD | |
7564 | staticpro (&deleted_pid_list); | |
7565 | #endif | |
934e2a68 | 7566 | |
f388c88a | 7567 | #endif /* subprocesses */ |
6720a7fb | 7568 | |
cd3520a4 JB |
7569 | DEFSYM (QCname, ":name"); |
7570 | DEFSYM (QCtype, ":type"); | |
7571 | ||
7572 | DEFSYM (Qeuid, "euid"); | |
7573 | DEFSYM (Qegid, "egid"); | |
7574 | DEFSYM (Quser, "user"); | |
7575 | DEFSYM (Qgroup, "group"); | |
7576 | DEFSYM (Qcomm, "comm"); | |
7577 | DEFSYM (Qstate, "state"); | |
7578 | DEFSYM (Qppid, "ppid"); | |
7579 | DEFSYM (Qpgrp, "pgrp"); | |
7580 | DEFSYM (Qsess, "sess"); | |
7581 | DEFSYM (Qttname, "ttname"); | |
7582 | DEFSYM (Qtpgid, "tpgid"); | |
7583 | DEFSYM (Qminflt, "minflt"); | |
7584 | DEFSYM (Qmajflt, "majflt"); | |
7585 | DEFSYM (Qcminflt, "cminflt"); | |
7586 | DEFSYM (Qcmajflt, "cmajflt"); | |
7587 | DEFSYM (Qutime, "utime"); | |
7588 | DEFSYM (Qstime, "stime"); | |
7589 | DEFSYM (Qtime, "time"); | |
7590 | DEFSYM (Qcutime, "cutime"); | |
7591 | DEFSYM (Qcstime, "cstime"); | |
7592 | DEFSYM (Qctime, "ctime"); | |
7593 | DEFSYM (Qpri, "pri"); | |
7594 | DEFSYM (Qnice, "nice"); | |
7595 | DEFSYM (Qthcount, "thcount"); | |
7596 | DEFSYM (Qstart, "start"); | |
7597 | DEFSYM (Qvsize, "vsize"); | |
7598 | DEFSYM (Qrss, "rss"); | |
7599 | DEFSYM (Qetime, "etime"); | |
7600 | DEFSYM (Qpcpu, "pcpu"); | |
7601 | DEFSYM (Qpmem, "pmem"); | |
7602 | DEFSYM (Qargs, "args"); | |
9057ff80 | 7603 | |
29208e82 | 7604 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
fb7ada5f | 7605 | doc: /* Non-nil means delete processes immediately when they exit. |
f388c88a EZ |
7606 | A value of nil means don't delete them until `list-processes' is run. */); |
7607 | ||
7608 | delete_exited_processes = 1; | |
7609 | ||
462aa963 | 7610 | #ifdef subprocesses |
29208e82 | 7611 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7612 | doc: /* Control type of device used to communicate with subprocesses. |
7613 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7614 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7615 | then a pipe is used in any case. | |
7616 | The value takes effect when `start-process' is called. */); | |
7617 | Vprocess_connection_type = Qt; | |
7618 | ||
7619 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7620 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7621 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7622 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7623 | is read in very small blocks, potentially resulting in very poor performance. | |
7624 | This behavior can be remedied to some extent by setting this variable to a | |
7625 | non-nil value, as it will automatically delay reading from such processes, to | |
7626 | allow them to produce more output before Emacs tries to read it. | |
7627 | If the value is t, the delay is reset after each write to the process; any other | |
7628 | non-nil value means that the delay is not reset on write. | |
7629 | The variable takes effect when `start-process' is called. */); | |
7630 | Vprocess_adaptive_read_buffering = Qt; | |
7631 | #endif | |
7632 | ||
7633 | defsubr (&Sprocessp); | |
7634 | defsubr (&Sget_process); | |
7635 | defsubr (&Sdelete_process); | |
7636 | defsubr (&Sprocess_status); | |
7637 | defsubr (&Sprocess_exit_status); | |
7638 | defsubr (&Sprocess_id); | |
7639 | defsubr (&Sprocess_name); | |
7640 | defsubr (&Sprocess_tty_name); | |
7641 | defsubr (&Sprocess_command); | |
7642 | defsubr (&Sset_process_buffer); | |
7643 | defsubr (&Sprocess_buffer); | |
7644 | defsubr (&Sprocess_mark); | |
7645 | defsubr (&Sset_process_filter); | |
7646 | defsubr (&Sprocess_filter); | |
7647 | defsubr (&Sset_process_sentinel); | |
7648 | defsubr (&Sprocess_sentinel); | |
7649 | defsubr (&Sset_process_window_size); | |
7650 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7651 | defsubr (&Sset_process_query_on_exit_flag); | |
7652 | defsubr (&Sprocess_query_on_exit_flag); | |
7653 | defsubr (&Sprocess_contact); | |
7654 | defsubr (&Sprocess_plist); | |
7655 | defsubr (&Sset_process_plist); | |
f388c88a EZ |
7656 | defsubr (&Sprocess_list); |
7657 | defsubr (&Sstart_process); | |
f388c88a EZ |
7658 | defsubr (&Sserial_process_configure); |
7659 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7660 | defsubr (&Sset_network_process_option); |
7661 | defsubr (&Smake_network_process); | |
7662 | defsubr (&Sformat_network_address); | |
5e617bc2 | 7663 | #if defined (HAVE_NET_IF_H) |
f388c88a EZ |
7664 | #ifdef SIOCGIFCONF |
7665 | defsubr (&Snetwork_interface_list); | |
7666 | #endif | |
5e617bc2 | 7667 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
f388c88a EZ |
7668 | defsubr (&Snetwork_interface_info); |
7669 | #endif | |
5e617bc2 | 7670 | #endif /* defined (HAVE_NET_IF_H) */ |
f388c88a EZ |
7671 | #ifdef DATAGRAM_SOCKETS |
7672 | defsubr (&Sprocess_datagram_address); | |
7673 | defsubr (&Sset_process_datagram_address); | |
7674 | #endif | |
7675 | defsubr (&Saccept_process_output); | |
7676 | defsubr (&Sprocess_send_region); | |
7677 | defsubr (&Sprocess_send_string); | |
7678 | defsubr (&Sinterrupt_process); | |
7679 | defsubr (&Skill_process); | |
7680 | defsubr (&Squit_process); | |
7681 | defsubr (&Sstop_process); | |
7682 | defsubr (&Scontinue_process); | |
7683 | defsubr (&Sprocess_running_child_p); | |
7684 | defsubr (&Sprocess_send_eof); | |
7685 | defsubr (&Ssignal_process); | |
7686 | defsubr (&Swaiting_for_user_input_p); | |
7687 | defsubr (&Sprocess_type); | |
7688 | defsubr (&Sset_process_coding_system); | |
7689 | defsubr (&Sprocess_coding_system); | |
7690 | defsubr (&Sset_process_filter_multibyte); | |
7691 | defsubr (&Sprocess_filter_multibyte_p); | |
7692 | ||
7693 | #endif /* subprocesses */ | |
7694 | ||
6720a7fb | 7695 | defsubr (&Sget_buffer_process); |
52a1b894 | 7696 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7697 | defsubr (&Slist_system_processes); |
a20878b6 | 7698 | defsubr (&Sprocess_attributes); |
6720a7fb | 7699 | } |