Commit | Line | Data |
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d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
95df8112 GM |
2 | |
3 | Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2011 | |
4 | Free Software Foundation, Inc. | |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
d0d6b7c5 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
d0d6b7c5 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d0d6b7c5 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
68c45bf0 | 23 | #include <signal.h> |
d0d6b7c5 JB |
24 | #include <stdio.h> |
25 | #include <errno.h> | |
26 | #include <setjmp.h> | |
6c60eb9f | 27 | #include <sys/types.h> /* Some typedefs are used in sys/file.h. */ |
d0d6b7c5 JB |
28 | #include <sys/file.h> |
29 | #include <sys/stat.h> | |
d7306fe6 | 30 | #include <setjmp.h> |
934e2a68 | 31 | |
93b4f699 | 32 | #include <unistd.h> |
e98d950b | 33 | #include <fcntl.h> |
e98d950b | 34 | |
0898ca10 JB |
35 | #include "lisp.h" |
36 | ||
f388c88a EZ |
37 | /* Only MS-DOS does not define `subprocesses'. */ |
38 | #ifdef subprocesses | |
39 | ||
d0d6b7c5 JB |
40 | #include <sys/socket.h> |
41 | #include <netdb.h> | |
42 | #include <netinet/in.h> | |
43 | #include <arpa/inet.h> | |
e690ca94 KS |
44 | |
45 | /* Are local (unix) sockets supported? */ | |
4624371d | 46 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
47 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
48 | #define AF_LOCAL AF_UNIX | |
49 | #endif | |
50 | #ifdef AF_LOCAL | |
51 | #define HAVE_LOCAL_SOCKETS | |
52 | #include <sys/un.h> | |
53 | #endif | |
54 | #endif | |
d0d6b7c5 | 55 | |
d0d6b7c5 | 56 | #include <sys/ioctl.h> |
5e617bc2 | 57 | #if defined (HAVE_NET_IF_H) |
32bc6709 DN |
58 | #include <net/if.h> |
59 | #endif /* HAVE_NET_IF_H */ | |
d0d6b7c5 | 60 | |
5e617bc2 | 61 | #if defined (HAVE_IFADDRS_H) |
377538cb JD |
62 | /* Must be after net/if.h */ |
63 | #include <ifaddrs.h> | |
64 | ||
65 | /* We only use structs from this header when we use getifaddrs. */ | |
5e617bc2 | 66 | #if defined (HAVE_NET_IF_DL_H) |
377538cb JD |
67 | #include <net/if_dl.h> |
68 | #endif | |
69 | ||
70 | #endif | |
71 | ||
d0d6b7c5 JB |
72 | #ifdef NEED_BSDTTY |
73 | #include <bsdtty.h> | |
74 | #endif | |
75 | ||
08116b48 CY |
76 | #ifdef HAVE_RES_INIT |
77 | #include <netinet/in.h> | |
78 | #include <arpa/nameser.h> | |
79 | #include <resolv.h> | |
80 | #endif | |
81 | ||
3d608a86 J |
82 | #ifdef HAVE_UTIL_H |
83 | #include <util.h> | |
84 | #endif | |
85 | ||
9bf58201 DN |
86 | #ifdef HAVE_PTY_H |
87 | #include <pty.h> | |
88 | #endif | |
89 | ||
f388c88a EZ |
90 | #endif /* subprocesses */ |
91 | ||
d0d6b7c5 | 92 | #include "systime.h" |
36ebaafa | 93 | #include "systty.h" |
d0d6b7c5 | 94 | |
d0d6b7c5 JB |
95 | #include "window.h" |
96 | #include "buffer.h" | |
5bbf78c1 | 97 | #include "character.h" |
0fa1789e | 98 | #include "coding.h" |
d0d6b7c5 | 99 | #include "process.h" |
428a555e | 100 | #include "frame.h" |
d0d6b7c5 JB |
101 | #include "termhooks.h" |
102 | #include "termopts.h" | |
103 | #include "commands.h" | |
3ec68006 | 104 | #include "keyboard.h" |
ececcbec | 105 | #include "blockinput.h" |
dfcf069d | 106 | #include "dispextern.h" |
e0016554 | 107 | #include "composite.h" |
30904ab7 | 108 | #include "atimer.h" |
f388c88a EZ |
109 | #include "sysselect.h" |
110 | #include "syssignal.h" | |
111 | #include "syswait.h" | |
8af55556 TZ |
112 | #ifdef HAVE_GNUTLS |
113 | #include "gnutls.h" | |
114 | #endif | |
d0d6b7c5 | 115 | |
0949d2b6 | 116 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 | 117 | #include "xgselect.h" |
0949d2b6 | 118 | #endif |
3d608a86 J |
119 | #ifdef HAVE_NS |
120 | #include "nsterm.h" | |
121 | #endif | |
57507bf8 | 122 | |
fdb183d6 DN |
123 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; |
124 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
125 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
126 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
127 | Lisp_Object QCname, QCtype; | |
128 | \f | |
129 | /* Non-zero if keyboard input is on hold, zero otherwise. */ | |
130 | ||
131 | static int kbd_is_on_hold; | |
132 | ||
fdb183d6 DN |
133 | /* Nonzero means don't run process sentinels. This is used |
134 | when exiting. */ | |
135 | int inhibit_sentinels; | |
136 | ||
f388c88a EZ |
137 | #ifdef subprocesses |
138 | ||
dd2281ae | 139 | Lisp_Object Qprocessp; |
955cbe7b PE |
140 | static Lisp_Object Qrun, Qstop, Qsignal; |
141 | static Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; | |
142 | Lisp_Object Qlocal; | |
143 | static Lisp_Object Qipv4, Qdatagram, Qseqpacket; | |
144 | static Lisp_Object Qreal, Qnetwork, Qserial; | |
e1652a86 | 145 | #ifdef AF_INET6 |
955cbe7b | 146 | static Lisp_Object Qipv6; |
e1652a86 | 147 | #endif |
955cbe7b PE |
148 | static Lisp_Object QCport, QCprocess; |
149 | Lisp_Object QCspeed; | |
d888760c GM |
150 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; |
151 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
955cbe7b PE |
152 | static Lisp_Object QCbuffer, QChost, QCservice; |
153 | static Lisp_Object QClocal, QCremote, QCcoding; | |
154 | static Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; | |
155 | static Lisp_Object QCsentinel, QClog, QCoptions, QCplist; | |
156 | static Lisp_Object Qlast_nonmenu_event; | |
3635ecad JR |
157 | /* QCfamily is declared and initialized in xfaces.c, |
158 | QCfilter in keyboard.c. */ | |
159 | extern Lisp_Object QCfamily, QCfilter; | |
160 | ||
d0d6b7c5 JB |
161 | /* Qexit is declared and initialized in eval.c. */ |
162 | ||
e0f712ba AC |
163 | /* QCfamily is defined in xfaces.c. */ |
164 | extern Lisp_Object QCfamily; | |
165 | /* QCfilter is defined in keyboard.c. */ | |
166 | extern Lisp_Object QCfilter; | |
167 | ||
d888760c GM |
168 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
169 | #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork)) | |
170 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
171 | #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial)) | |
d0d6b7c5 | 172 | |
5f0929a7 RS |
173 | #ifndef HAVE_H_ERRNO |
174 | extern int h_errno; | |
175 | #endif | |
176 | ||
d0d6b7c5 | 177 | /* Number of events of change of status of a process. */ |
40ccffa6 | 178 | static int process_tick; |
d0d6b7c5 | 179 | /* Number of events for which the user or sentinel has been notified. */ |
40ccffa6 | 180 | static int update_tick; |
d0d6b7c5 | 181 | |
dd2a17ab KS |
182 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
183 | ||
82d6e50b | 184 | /* Only W32 has this, it really means that select can't take write mask. */ |
dd2a17ab KS |
185 | #ifdef BROKEN_NON_BLOCKING_CONNECT |
186 | #undef NON_BLOCKING_CONNECT | |
82d6e50b | 187 | #define SELECT_CANT_DO_WRITE_MASK |
dd2a17ab KS |
188 | #else |
189 | #ifndef NON_BLOCKING_CONNECT | |
dd2a17ab KS |
190 | #ifdef HAVE_SELECT |
191 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
192 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
193 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
194 | #define NON_BLOCKING_CONNECT | |
195 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
196 | #endif /* O_NONBLOCK || O_NDELAY */ | |
197 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
198 | #endif /* HAVE_SELECT */ | |
dd2a17ab KS |
199 | #endif /* NON_BLOCKING_CONNECT */ |
200 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
201 | ||
e690ca94 KS |
202 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
203 | this system. We need to read full packets, so we need a | |
204 | "non-destructive" select. So we require either native select, | |
205 | or emulation of select using FIONREAD. */ | |
206 | ||
e690ca94 KS |
207 | #ifdef BROKEN_DATAGRAM_SOCKETS |
208 | #undef DATAGRAM_SOCKETS | |
209 | #else | |
210 | #ifndef DATAGRAM_SOCKETS | |
e690ca94 KS |
211 | #if defined (HAVE_SELECT) || defined (FIONREAD) |
212 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
213 | #define DATAGRAM_SOCKETS | |
214 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
215 | #endif /* HAVE_SELECT || FIONREAD */ | |
e690ca94 KS |
216 | #endif /* DATAGRAM_SOCKETS */ |
217 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
218 | ||
f00c449b SM |
219 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
220 | # define HAVE_SEQPACKET | |
221 | #endif | |
222 | ||
6b61353c KH |
223 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
224 | #ifdef EMACS_HAS_USECS | |
225 | #define ADAPTIVE_READ_BUFFERING | |
226 | #endif | |
227 | #endif | |
228 | ||
229 | #ifdef ADAPTIVE_READ_BUFFERING | |
230 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
231 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
232 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
233 | ||
db853b7a KS |
234 | /* Number of processes which have a non-zero read_output_delay, |
235 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
236 | |
237 | static int process_output_delay_count; | |
238 | ||
db853b7a | 239 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
240 | |
241 | static int process_output_skip; | |
242 | ||
6b61353c KH |
243 | #else |
244 | #define process_output_delay_count 0 | |
245 | #endif | |
246 | ||
cd64ea1d | 247 | static Lisp_Object Fget_process (Lisp_Object); |
40ccffa6 | 248 | static void create_process (Lisp_Object, char **, Lisp_Object); |
006c5daa | 249 | #ifdef SIGIO |
f57e2426 | 250 | static int keyboard_bit_set (SELECT_TYPE *); |
006c5daa | 251 | #endif |
f57e2426 J |
252 | static void deactivate_process (Lisp_Object); |
253 | static void status_notify (struct Lisp_Process *); | |
254 | static int read_process_output (Lisp_Object, int); | |
255 | static void create_pty (Lisp_Object); | |
41d03b9a | 256 | |
583dcae4 | 257 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 258 | to detect C-g. It isn't actually used when doing interrupt input. */ |
5e617bc2 | 259 | #if defined (HAVE_WINDOW_SYSTEM) && !defined (USE_ASYNC_EVENTS) |
44ade2e9 RS |
260 | #define POLL_FOR_INPUT |
261 | #endif | |
262 | ||
d3da34e0 JB |
263 | static Lisp_Object get_process (register Lisp_Object name); |
264 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 265 | |
f388c88a EZ |
266 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
267 | ||
268 | static SELECT_TYPE input_wait_mask; | |
269 | ||
994d9841 | 270 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
271 | |
272 | static SELECT_TYPE non_keyboard_wait_mask; | |
273 | ||
994d9841 | 274 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
275 | |
276 | static SELECT_TYPE non_process_wait_mask; | |
277 | ||
3fad2ad2 | 278 | /* Mask for selecting for write. */ |
994d9841 | 279 | |
3fad2ad2 | 280 | static SELECT_TYPE write_mask; |
994d9841 | 281 | |
bad49fc7 | 282 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
283 | /* Mask of bits indicating the descriptors that we wait for connect to |
284 | complete on. Once they complete, they are removed from this mask | |
285 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
286 | ||
287 | static SELECT_TYPE connect_wait_mask; | |
288 | ||
289 | /* Number of bits set in connect_wait_mask. */ | |
290 | static int num_pending_connects; | |
f388c88a | 291 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 292 | |
7d0e672e RS |
293 | /* The largest descriptor currently in use for a process object. */ |
294 | static int max_process_desc; | |
295 | ||
3fad2ad2 J |
296 | /* The largest descriptor currently in use for input. */ |
297 | static int max_input_desc; | |
994d9841 | 298 | |
d0d6b7c5 | 299 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
40ccffa6 | 300 | static Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
301 | |
302 | /* Alist of elements (NAME . PROCESS) */ | |
40ccffa6 | 303 | static Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
304 | |
305 | /* Buffered-ahead input char from process, indexed by channel. | |
306 | -1 means empty (no char is buffered). | |
307 | Used on sys V where the only way to tell if there is any | |
308 | output from the process is to read at least one char. | |
309 | Always -1 on systems that support FIONREAD. */ | |
310 | ||
40ccffa6 | 311 | static int proc_buffered_char[MAXDESC]; |
dd2281ae | 312 | |
0fa1789e | 313 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
314 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
315 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 316 | |
e690ca94 KS |
317 | #ifdef DATAGRAM_SOCKETS |
318 | /* Table of `partner address' for datagram sockets. */ | |
40ccffa6 | 319 | static struct sockaddr_and_len { |
e690ca94 KS |
320 | struct sockaddr *sa; |
321 | int len; | |
322 | } datagram_address[MAXDESC]; | |
323 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 324 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
325 | #else |
326 | #define DATAGRAM_CHAN_P(chan) (0) | |
327 | #define DATAGRAM_CONN_P(proc) (0) | |
328 | #endif | |
329 | ||
93b4f699 RS |
330 | /* Maximum number of bytes to send to a pty without an eof. */ |
331 | static int pty_max_bytes; | |
3b9a3dfa | 332 | |
d0d6b7c5 | 333 | \f |
3fad2ad2 | 334 | |
40ccffa6 | 335 | static struct fd_callback_data |
3fad2ad2 J |
336 | { |
337 | fd_callback func; | |
338 | void *data; | |
339 | #define FOR_READ 1 | |
340 | #define FOR_WRITE 2 | |
341 | int condition; /* mask of the defines above. */ | |
342 | } fd_callback_info[MAXDESC]; | |
343 | ||
344 | ||
345 | /* Add a file descriptor FD to be monitored for when read is possible. | |
346 | When read is possible, call FUNC with argument DATA. */ | |
347 | ||
348 | void | |
349 | add_read_fd (int fd, fd_callback func, void *data) | |
350 | { | |
351 | xassert (fd < MAXDESC); | |
352 | add_keyboard_wait_descriptor (fd); | |
353 | ||
354 | fd_callback_info[fd].func = func; | |
355 | fd_callback_info[fd].data = data; | |
356 | fd_callback_info[fd].condition |= FOR_READ; | |
357 | } | |
358 | ||
359 | /* Stop monitoring file descriptor FD for when read is possible. */ | |
360 | ||
361 | void | |
362 | delete_read_fd (int fd) | |
363 | { | |
364 | xassert (fd < MAXDESC); | |
365 | delete_keyboard_wait_descriptor (fd); | |
366 | ||
367 | fd_callback_info[fd].condition &= ~FOR_READ; | |
368 | if (fd_callback_info[fd].condition == 0) | |
369 | { | |
370 | fd_callback_info[fd].func = 0; | |
371 | fd_callback_info[fd].data = 0; | |
372 | } | |
373 | } | |
374 | ||
375 | /* Add a file descriptor FD to be monitored for when write is possible. | |
376 | When write is possible, call FUNC with argument DATA. */ | |
377 | ||
378 | void | |
379 | add_write_fd (int fd, fd_callback func, void *data) | |
380 | { | |
381 | xassert (fd < MAXDESC); | |
382 | FD_SET (fd, &write_mask); | |
383 | if (fd > max_input_desc) | |
384 | max_input_desc = fd; | |
385 | ||
386 | fd_callback_info[fd].func = func; | |
387 | fd_callback_info[fd].data = data; | |
388 | fd_callback_info[fd].condition |= FOR_WRITE; | |
389 | } | |
390 | ||
391 | /* Stop monitoring file descriptor FD for when write is possible. */ | |
392 | ||
393 | void | |
394 | delete_write_fd (int fd) | |
395 | { | |
396 | int lim = max_input_desc; | |
397 | ||
398 | xassert (fd < MAXDESC); | |
399 | FD_CLR (fd, &write_mask); | |
400 | fd_callback_info[fd].condition &= ~FOR_WRITE; | |
401 | if (fd_callback_info[fd].condition == 0) | |
402 | { | |
403 | fd_callback_info[fd].func = 0; | |
404 | fd_callback_info[fd].data = 0; | |
405 | ||
406 | if (fd == max_input_desc) | |
407 | for (fd = lim; fd >= 0; fd--) | |
408 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) | |
409 | { | |
410 | max_input_desc = fd; | |
411 | break; | |
412 | } | |
51b59d79 | 413 | |
3fad2ad2 J |
414 | } |
415 | } | |
416 | ||
417 | \f | |
d0d6b7c5 JB |
418 | /* Compute the Lisp form of the process status, p->status, from |
419 | the numeric status that was returned by `wait'. */ | |
420 | ||
bba104c1 | 421 | static Lisp_Object status_convert (int); |
f9738840 | 422 | |
ff6daed3 | 423 | static void |
d3da34e0 | 424 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 425 | { |
6bfd98e7 | 426 | eassert (p->raw_status_new); |
bba104c1 | 427 | p->status = status_convert (p->raw_status); |
6bfd98e7 | 428 | p->raw_status_new = 0; |
d0d6b7c5 JB |
429 | } |
430 | ||
177c0ea7 | 431 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
432 | the list that we use internally. */ |
433 | ||
ff6daed3 | 434 | static Lisp_Object |
bba104c1 | 435 | status_convert (int w) |
d0d6b7c5 JB |
436 | { |
437 | if (WIFSTOPPED (w)) | |
438 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
439 | else if (WIFEXITED (w)) | |
440 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
441 | WCOREDUMP (w) ? Qt : Qnil)); | |
442 | else if (WIFSIGNALED (w)) | |
443 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
444 | WCOREDUMP (w) ? Qt : Qnil)); | |
445 | else | |
446 | return Qrun; | |
447 | } | |
448 | ||
449 | /* Given a status-list, extract the three pieces of information | |
450 | and store them individually through the three pointers. */ | |
451 | ||
ff6daed3 | 452 | static void |
d3da34e0 | 453 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, int *coredump) |
d0d6b7c5 JB |
454 | { |
455 | Lisp_Object tem; | |
456 | ||
bcd69aea | 457 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
458 | { |
459 | *symbol = l; | |
460 | *code = 0; | |
461 | *coredump = 0; | |
462 | } | |
463 | else | |
464 | { | |
70949dac KR |
465 | *symbol = XCAR (l); |
466 | tem = XCDR (l); | |
467 | *code = XFASTINT (XCAR (tem)); | |
468 | tem = XCDR (tem); | |
d0d6b7c5 JB |
469 | *coredump = !NILP (tem); |
470 | } | |
471 | } | |
472 | ||
473 | /* Return a string describing a process status list. */ | |
474 | ||
116c423c | 475 | static Lisp_Object |
d3da34e0 | 476 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 477 | { |
116c423c | 478 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
479 | Lisp_Object symbol; |
480 | int code, coredump; | |
481 | Lisp_Object string, string2; | |
482 | ||
483 | decode_status (status, &symbol, &code, &coredump); | |
484 | ||
485 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
486 | { | |
68c45bf0 | 487 | char *signame; |
ca9c0567 | 488 | synchronize_system_messages_locale (); |
68c45bf0 | 489 | signame = strsignal (code); |
b97ad9ea | 490 | if (signame == 0) |
66bd43d1 KH |
491 | string = build_string ("unknown"); |
492 | else | |
493 | { | |
494 | int c1, c2; | |
495 | ||
496 | string = make_unibyte_string (signame, strlen (signame)); | |
497 | if (! NILP (Vlocale_coding_system)) | |
498 | string = (code_convert_string_norecord | |
499 | (string, Vlocale_coding_system, 0)); | |
42a5b22f | 500 | c1 = STRING_CHAR (SDATA (string)); |
5da9919f | 501 | c2 = downcase (c1); |
66bd43d1 | 502 | if (c1 != c2) |
4735b74e | 503 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 504 | } |
d0d6b7c5 | 505 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
506 | return concat2 (string, string2); |
507 | } | |
508 | else if (EQ (symbol, Qexit)) | |
509 | { | |
116c423c KS |
510 | if (NETCONN1_P (p)) |
511 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
512 | if (code == 0) |
513 | return build_string ("finished\n"); | |
f2980264 | 514 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 515 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
516 | return concat3 (build_string ("exited abnormally with code "), |
517 | string, string2); | |
d0d6b7c5 | 518 | } |
dd2a17ab KS |
519 | else if (EQ (symbol, Qfailed)) |
520 | { | |
521 | string = Fnumber_to_string (make_number (code)); | |
522 | string2 = build_string ("\n"); | |
e690ca94 KS |
523 | return concat3 (build_string ("failed with code "), |
524 | string, string2); | |
dd2a17ab | 525 | } |
d0d6b7c5 JB |
526 | else |
527 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
528 | } | |
529 | \f | |
530 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 531 | |
9bf58201 DN |
532 | /* The file name of the pty opened by allocate_pty. */ |
533 | static char pty_name[24]; | |
534 | ||
875e6b94 KH |
535 | /* Open an available pty, returning a file descriptor. |
536 | Return -1 on failure. | |
537 | The file name of the terminal corresponding to the pty | |
538 | is left in the variable pty_name. */ | |
539 | ||
ff6daed3 | 540 | static int |
d3da34e0 | 541 | allocate_pty (void) |
d0d6b7c5 | 542 | { |
d0d6b7c5 JB |
543 | int fd; |
544 | ||
545 | #ifdef PTY_ITERATION | |
546 | PTY_ITERATION | |
547 | #else | |
be02381c | 548 | register int c, i; |
d0d6b7c5 JB |
549 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) |
550 | for (i = 0; i < 16; i++) | |
551 | #endif | |
552 | { | |
553 | #ifdef PTY_NAME_SPRINTF | |
554 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
555 | #else |
556 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
557 | #endif /* no PTY_NAME_SPRINTF */ |
558 | ||
4d7c105e RS |
559 | #ifdef PTY_OPEN |
560 | PTY_OPEN; | |
561 | #else /* no PTY_OPEN */ | |
34967d0f | 562 | { |
34967d0f SM |
563 | { /* Some systems name their pseudoterminals so that there are gaps in |
564 | the usual sequence - for example, on HP9000/S700 systems, there | |
565 | are no pseudoterminals with names ending in 'f'. So we wait for | |
566 | three failures in a row before deciding that we've reached the | |
567 | end of the ptys. */ | |
568 | int failed_count = 0; | |
57048744 | 569 | struct stat stb; |
f3d9532b | 570 | |
34967d0f SM |
571 | if (stat (pty_name, &stb) < 0) |
572 | { | |
573 | failed_count++; | |
574 | if (failed_count >= 3) | |
575 | return -1; | |
576 | } | |
577 | else | |
578 | failed_count = 0; | |
32676c08 | 579 | } |
34967d0f SM |
580 | # ifdef O_NONBLOCK |
581 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
582 | # else | |
583 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
584 | # endif | |
34967d0f | 585 | } |
4d7c105e | 586 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
587 | |
588 | if (fd >= 0) | |
589 | { | |
590 | /* check to make certain that both sides are available | |
591 | this avoids a nasty yet stupid bug in rlogins */ | |
592 | #ifdef PTY_TTY_NAME_SPRINTF | |
593 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 594 | #else |
63136da6 | 595 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 596 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
597 | if (access (pty_name, 6) != 0) |
598 | { | |
68c45bf0 | 599 | emacs_close (fd); |
132d0475 | 600 | # ifndef __sgi |
d0d6b7c5 | 601 | continue; |
34967d0f | 602 | # else |
d0d6b7c5 | 603 | return -1; |
132d0475 | 604 | # endif /* __sgi */ |
d0d6b7c5 | 605 | } |
d0d6b7c5 JB |
606 | setup_pty (fd); |
607 | return fd; | |
608 | } | |
609 | } | |
610 | return -1; | |
611 | } | |
612 | #endif /* HAVE_PTYS */ | |
613 | \f | |
ff6daed3 | 614 | static Lisp_Object |
d3da34e0 | 615 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
616 | { |
617 | register Lisp_Object val, tem, name1; | |
618 | register struct Lisp_Process *p; | |
31c286f7 PE |
619 | char suffix[sizeof "<>" + INT_STRLEN_BOUND (printmax_t)]; |
620 | printmax_t i; | |
d0d6b7c5 | 621 | |
98423852 | 622 | p = allocate_process (); |
23d6bb9c | 623 | |
60f0fb11 SM |
624 | p->infd = -1; |
625 | p->outfd = -1; | |
626 | p->tick = 0; | |
627 | p->update_tick = 0; | |
6bfd98e7 | 628 | p->pid = 0; |
fd41ad98 | 629 | p->pty_flag = 0; |
6bfd98e7 | 630 | p->raw_status_new = 0; |
d0d6b7c5 JB |
631 | p->status = Qrun; |
632 | p->mark = Fmake_marker (); | |
847c048e | 633 | p->kill_without_query = 0; |
d0d6b7c5 | 634 | |
6b61353c | 635 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
636 | p->adaptive_read_buffering = 0; |
637 | p->read_output_delay = 0; | |
638 | p->read_output_skip = 0; | |
6b61353c KH |
639 | #endif |
640 | ||
8af55556 TZ |
641 | #ifdef HAVE_GNUTLS |
642 | p->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
8ed70bf3 | 643 | p->gnutls_log_level = 0; |
df7fcaff | 644 | p->gnutls_p = 0; |
8af55556 TZ |
645 | #endif |
646 | ||
d0d6b7c5 JB |
647 | /* If name is already in use, modify it until it is unused. */ |
648 | ||
649 | name1 = name; | |
650 | for (i = 1; ; i++) | |
651 | { | |
652 | tem = Fget_process (name1); | |
653 | if (NILP (tem)) break; | |
31c286f7 | 654 | sprintf (suffix, "<%"pMd">", i); |
d0d6b7c5 JB |
655 | name1 = concat2 (name, build_string (suffix)); |
656 | } | |
657 | name = name1; | |
658 | p->name = name; | |
23d6bb9c | 659 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
660 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
661 | return val; | |
662 | } | |
663 | ||
ff6daed3 | 664 | static void |
d3da34e0 | 665 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
666 | { |
667 | register Lisp_Object pair; | |
668 | ||
669 | pair = Frassq (proc, Vprocess_alist); | |
670 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
671 | |
672 | deactivate_process (proc); | |
673 | } | |
03f04413 | 674 | |
d0d6b7c5 JB |
675 | \f |
676 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 677 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 678 | (Lisp_Object object) |
d0d6b7c5 | 679 | { |
4ee3e309 | 680 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
681 | } |
682 | ||
683 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 684 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 685 | (register Lisp_Object name) |
d0d6b7c5 | 686 | { |
bcd69aea | 687 | if (PROCESSP (name)) |
d0d6b7c5 | 688 | return name; |
b7826503 | 689 | CHECK_STRING (name); |
d0d6b7c5 JB |
690 | return Fcdr (Fassoc (name, Vprocess_alist)); |
691 | } | |
692 | ||
ebb9e16f JB |
693 | /* This is how commands for the user decode process arguments. It |
694 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
695 | Buffers denote the first process in the buffer, and nil denotes the | |
696 | current buffer. */ | |
d0d6b7c5 | 697 | |
77b221b1 | 698 | static Lisp_Object |
d3da34e0 | 699 | get_process (register Lisp_Object name) |
d0d6b7c5 | 700 | { |
1619761d KH |
701 | register Lisp_Object proc, obj; |
702 | if (STRINGP (name)) | |
703 | { | |
704 | obj = Fget_process (name); | |
705 | if (NILP (obj)) | |
706 | obj = Fget_buffer (name); | |
707 | if (NILP (obj)) | |
d5db4077 | 708 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
709 | } |
710 | else if (NILP (name)) | |
711 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 712 | else |
1619761d KH |
713 | obj = name; |
714 | ||
715 | /* Now obj should be either a buffer object or a process object. | |
716 | */ | |
717 | if (BUFFERP (obj)) | |
d0d6b7c5 | 718 | { |
1619761d | 719 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 720 | if (NILP (proc)) |
4b4deea2 | 721 | error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj), name))); |
d0d6b7c5 | 722 | } |
d0d6b7c5 | 723 | else |
1619761d | 724 | { |
b7826503 | 725 | CHECK_PROCESS (obj); |
1619761d KH |
726 | proc = obj; |
727 | } | |
728 | return proc; | |
d0d6b7c5 JB |
729 | } |
730 | ||
a5cfdda8 KS |
731 | |
732 | #ifdef SIGCHLD | |
733 | /* Fdelete_process promises to immediately forget about the process, but in | |
734 | reality, Emacs needs to remember those processes until they have been | |
735 | treated by sigchld_handler; otherwise this handler would consider the | |
736 | process as being synchronous and say that the synchronous process is | |
737 | dead. */ | |
738 | static Lisp_Object deleted_pid_list; | |
739 | #endif | |
740 | ||
d0d6b7c5 | 741 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
742 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
743 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
744 | nil, indicating the current buffer's process. */) | |
5842a27b | 745 | (register Lisp_Object process) |
d0d6b7c5 | 746 | { |
ff6daed3 KS |
747 | register struct Lisp_Process *p; |
748 | ||
4ee3e309 | 749 | process = get_process (process); |
ff6daed3 KS |
750 | p = XPROCESS (process); |
751 | ||
6bfd98e7 | 752 | p->raw_status_new = 0; |
d888760c | 753 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 754 | { |
ff6daed3 | 755 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
60f0fb11 | 756 | p->tick = ++process_tick; |
ff6daed3 | 757 | status_notify (p); |
e42bdf01 | 758 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 759 | } |
60f0fb11 | 760 | else if (p->infd >= 0) |
d0d6b7c5 | 761 | { |
a5cfdda8 KS |
762 | #ifdef SIGCHLD |
763 | Lisp_Object symbol; | |
d311d28c | 764 | pid_t pid = p->pid; |
a5cfdda8 KS |
765 | |
766 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 767 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
768 | /* GC treated elements set to nil. */ |
769 | Fdelq (Qnil, deleted_pid_list)); | |
770 | /* If the process has already signaled, remove it from the list. */ | |
771 | if (p->raw_status_new) | |
772 | update_status (p); | |
773 | symbol = p->status; | |
774 | if (CONSP (p->status)) | |
775 | symbol = XCAR (p->status); | |
776 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
29ed4d51 CY |
777 | deleted_pid_list |
778 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
779 | else |
780 | #endif | |
781 | { | |
782 | Fkill_process (process, Qnil); | |
783 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ | |
784 | p->status | |
785 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); | |
60f0fb11 | 786 | p->tick = ++process_tick; |
a5cfdda8 | 787 | status_notify (p); |
e42bdf01 | 788 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 789 | } |
d0d6b7c5 | 790 | } |
4ee3e309 | 791 | remove_process (process); |
d0d6b7c5 JB |
792 | return Qnil; |
793 | } | |
794 | \f | |
795 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
796 | doc: /* Return the status of PROCESS. |
797 | The returned value is one of the following symbols: | |
798 | run -- for a process that is running. | |
799 | stop -- for a process stopped but continuable. | |
800 | exit -- for a process that has exited. | |
801 | signal -- for a process that has got a fatal signal. | |
802 | open -- for a network stream connection that is open. | |
e690ca94 | 803 | listen -- for a network stream server that is listening. |
fdb82f93 | 804 | closed -- for a network stream connection that is closed. |
e4984112 KS |
805 | connect -- when waiting for a non-blocking connection to complete. |
806 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
807 | nil -- if arg is a process name and no such process exists. |
808 | PROCESS may be a process, a buffer, the name of a process, or | |
809 | nil, indicating the current buffer's process. */) | |
5842a27b | 810 | (register Lisp_Object process) |
d0d6b7c5 JB |
811 | { |
812 | register struct Lisp_Process *p; | |
813 | register Lisp_Object status; | |
343f4114 | 814 | |
4ee3e309 EN |
815 | if (STRINGP (process)) |
816 | process = Fget_process (process); | |
343f4114 | 817 | else |
4ee3e309 | 818 | process = get_process (process); |
343f4114 | 819 | |
4ee3e309 EN |
820 | if (NILP (process)) |
821 | return process; | |
343f4114 | 822 | |
4ee3e309 | 823 | p = XPROCESS (process); |
6bfd98e7 | 824 | if (p->raw_status_new) |
d0d6b7c5 JB |
825 | update_status (p); |
826 | status = p->status; | |
bcd69aea | 827 | if (CONSP (status)) |
70949dac | 828 | status = XCAR (status); |
d888760c | 829 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 830 | { |
e690ca94 | 831 | if (EQ (status, Qexit)) |
d0d6b7c5 | 832 | status = Qclosed; |
e690ca94 KS |
833 | else if (EQ (p->command, Qt)) |
834 | status = Qstop; | |
835 | else if (EQ (status, Qrun)) | |
836 | status = Qopen; | |
d0d6b7c5 JB |
837 | } |
838 | return status; | |
839 | } | |
840 | ||
841 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
842 | 1, 1, 0, | |
fdb82f93 PJ |
843 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
844 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 845 | (register Lisp_Object process) |
d0d6b7c5 | 846 | { |
b7826503 | 847 | CHECK_PROCESS (process); |
6bfd98e7 | 848 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 EN |
849 | update_status (XPROCESS (process)); |
850 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 851 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
852 | return make_number (0); |
853 | } | |
854 | ||
855 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 856 | doc: /* Return the process id of PROCESS. |
f3d9532b | 857 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 858 | For a network connection, this value is nil. */) |
5842a27b | 859 | (register Lisp_Object process) |
d0d6b7c5 | 860 | { |
d311d28c | 861 | pid_t pid; |
d30fe779 | 862 | |
b7826503 | 863 | CHECK_PROCESS (process); |
d30fe779 EZ |
864 | pid = XPROCESS (process)->pid; |
865 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
866 | } |
867 | ||
868 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
869 | doc: /* Return the name of PROCESS, as a string. |
870 | This is the name of the program invoked in PROCESS, | |
871 | possibly modified to make it unique among process names. */) | |
5842a27b | 872 | (register Lisp_Object process) |
d0d6b7c5 | 873 | { |
b7826503 | 874 | CHECK_PROCESS (process); |
4ee3e309 | 875 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
876 | } |
877 | ||
878 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
879 | doc: /* Return the command that was executed to start PROCESS. |
880 | This is a list of strings, the first string being the program executed | |
881 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
882 | For a network or serial process, this is nil (process is running) or t |
883 | \(process is stopped). */) | |
5842a27b | 884 | (register Lisp_Object process) |
d0d6b7c5 | 885 | { |
b7826503 | 886 | CHECK_PROCESS (process); |
4ee3e309 | 887 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
888 | } |
889 | ||
3b9a3dfa | 890 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
891 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
892 | This is the terminal that the process itself reads and writes on, | |
893 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 894 | (register Lisp_Object process) |
3b9a3dfa | 895 | { |
b7826503 | 896 | CHECK_PROCESS (process); |
4ee3e309 | 897 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
898 | } |
899 | ||
d0d6b7c5 | 900 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 | 901 | 2, 2, 0, |
76147d94 DD |
902 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). |
903 | Return BUFFER. */) | |
5842a27b | 904 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 905 | { |
e690ca94 KS |
906 | struct Lisp_Process *p; |
907 | ||
b7826503 | 908 | CHECK_PROCESS (process); |
d0d6b7c5 | 909 | if (!NILP (buffer)) |
b7826503 | 910 | CHECK_BUFFER (buffer); |
e690ca94 KS |
911 | p = XPROCESS (process); |
912 | p->buffer = buffer; | |
d888760c | 913 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 914 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); |
03f04413 | 915 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
916 | return buffer; |
917 | } | |
918 | ||
919 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
920 | 1, 1, 0, |
921 | doc: /* Return the buffer PROCESS is associated with. | |
922 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 923 | (register Lisp_Object process) |
d0d6b7c5 | 924 | { |
b7826503 | 925 | CHECK_PROCESS (process); |
4ee3e309 | 926 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
927 | } |
928 | ||
929 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
930 | 1, 1, 0, |
931 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 932 | (register Lisp_Object process) |
d0d6b7c5 | 933 | { |
b7826503 | 934 | CHECK_PROCESS (process); |
4ee3e309 | 935 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
936 | } |
937 | ||
938 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
939 | 2, 2, 0, |
940 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 941 | A value of t means stop accepting output from the process. |
3452df9e KS |
942 | |
943 | When a process has a filter, its buffer is not used for output. | |
944 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 945 | passed to the filter. |
3452df9e | 946 | |
fdb82f93 | 947 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
948 | The string argument is normally a multibyte string, except: |
949 | - if the process' input coding system is no-conversion or raw-text, | |
950 | it is a unibyte string (the non-converted input), or else | |
951 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
952 | string (the result of converting the decoded input multibyte | |
953 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 954 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 955 | { |
471f86b9 | 956 | struct Lisp_Process *p; |
177c0ea7 | 957 | |
b7826503 | 958 | CHECK_PROCESS (process); |
471f86b9 GM |
959 | p = XPROCESS (process); |
960 | ||
961 | /* Don't signal an error if the process' input file descriptor | |
962 | is closed. This could make debugging Lisp more difficult, | |
963 | for example when doing something like | |
964 | ||
965 | (setq process (start-process ...)) | |
966 | (debug) | |
967 | (set-process-filter process ...) */ | |
177c0ea7 | 968 | |
60f0fb11 | 969 | if (p->infd >= 0) |
a69281ff | 970 | { |
e690ca94 | 971 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 972 | { |
60f0fb11 SM |
973 | FD_CLR (p->infd, &input_wait_mask); |
974 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 975 | } |
e690ca94 | 976 | else if (EQ (p->filter, Qt) |
d888760c GM |
977 | /* Network or serial process not stopped: */ |
978 | && !EQ (p->command, Qt)) | |
471f86b9 | 979 | { |
60f0fb11 SM |
980 | FD_SET (p->infd, &input_wait_mask); |
981 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 982 | } |
a69281ff | 983 | } |
177c0ea7 | 984 | |
471f86b9 | 985 | p->filter = filter; |
d888760c | 986 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 987 | p->childp = Fplist_put (p->childp, QCfilter, filter); |
03f04413 | 988 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
989 | return filter; |
990 | } | |
991 | ||
992 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
993 | 1, 1, 0, |
994 | doc: /* Returns the filter function of PROCESS; nil if none. | |
995 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 996 | (register Lisp_Object process) |
d0d6b7c5 | 997 | { |
b7826503 | 998 | CHECK_PROCESS (process); |
4ee3e309 | 999 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1000 | } |
1001 | ||
1002 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1003 | 2, 2, 0, |
1004 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1005 | The sentinel is called as a function when the process changes state. | |
1006 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 1007 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1008 | { |
6b61353c KH |
1009 | struct Lisp_Process *p; |
1010 | ||
b7826503 | 1011 | CHECK_PROCESS (process); |
6b61353c KH |
1012 | p = XPROCESS (process); |
1013 | ||
1014 | p->sentinel = sentinel; | |
d888760c | 1015 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6b61353c | 1016 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); |
d0d6b7c5 JB |
1017 | return sentinel; |
1018 | } | |
1019 | ||
1020 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1021 | 1, 1, 0, |
1022 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1023 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 1024 | (register Lisp_Object process) |
d0d6b7c5 | 1025 | { |
b7826503 | 1026 | CHECK_PROCESS (process); |
4ee3e309 | 1027 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1028 | } |
1029 | ||
396df322 | 1030 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1031 | Sset_process_window_size, 3, 3, 0, |
1032 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1033 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1034 | { |
b7826503 | 1035 | CHECK_PROCESS (process); |
d311d28c PE |
1036 | CHECK_RANGED_INTEGER (0, height, INT_MAX); |
1037 | CHECK_RANGED_INTEGER (0, width, INT_MAX); | |
177c0ea7 | 1038 | |
60f0fb11 SM |
1039 | if (XPROCESS (process)->infd < 0 |
1040 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1041 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1042 | return Qnil; |
1043 | else | |
1044 | return Qt; | |
1045 | } | |
1046 | ||
52a1b894 | 1047 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1048 | Fset_process_inherit_coding_system_flag, |
1049 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1050 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1051 | If the second argument FLAG is non-nil, then the variable | |
1052 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1053 | will be bound to the value of the coding system used to decode | |
1054 | the process output. | |
1055 | ||
1056 | This is useful when the coding system specified for the process buffer | |
1057 | leaves either the character code conversion or the end-of-line conversion | |
1058 | unspecified, or if the coding system used to decode the process output | |
1059 | is more appropriate for saving the process buffer. | |
1060 | ||
1061 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1062 | starting the process is an alternative way of setting the inherit flag | |
1063 | for the process which will run. */) | |
5842a27b | 1064 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1065 | { |
b7826503 | 1066 | CHECK_PROCESS (process); |
60f0fb11 | 1067 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1068 | return flag; |
1069 | } | |
1070 | ||
e690ca94 KS |
1071 | DEFUN ("set-process-query-on-exit-flag", |
1072 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1073 | 2, 2, 0, | |
1074 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1075 | If the second argument FLAG is non-nil, Emacs will query the user before |
10be7e0d | 1076 | exiting or killing a buffer if PROCESS is running. */) |
5842a27b | 1077 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1078 | { |
b7826503 | 1079 | CHECK_PROCESS (process); |
60f0fb11 | 1080 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1081 | return flag; |
d0d6b7c5 | 1082 | } |
312c9964 | 1083 | |
e690ca94 KS |
1084 | DEFUN ("process-query-on-exit-flag", |
1085 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1086 | 1, 1, 0, |
f3d9532b | 1087 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1088 | (register Lisp_Object process) |
de282a05 | 1089 | { |
b7826503 | 1090 | CHECK_PROCESS (process); |
60f0fb11 | 1091 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1092 | } |
1093 | ||
1094 | #ifdef DATAGRAM_SOCKETS | |
cd64ea1d | 1095 | static Lisp_Object Fprocess_datagram_address (Lisp_Object); |
e690ca94 KS |
1096 | #endif |
1097 | ||
1098 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1099 | 1, 2, 0, | |
1100 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1101 | For a network or serial connection, the value depends on the optional |
1102 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1103 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1104 | connection. If KEY is t, the complete contact information for the | |
1105 | connection is returned, else the specific value for the keyword KEY is | |
1106 | returned. See `make-network-process' or `make-serial-process' for a | |
1107 | list of keywords. */) | |
5842a27b | 1108 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1109 | { |
1110 | Lisp_Object contact; | |
1111 | ||
1112 | CHECK_PROCESS (process); | |
1113 | contact = XPROCESS (process)->childp; | |
1114 | ||
1115 | #ifdef DATAGRAM_SOCKETS | |
1116 | if (DATAGRAM_CONN_P (process) | |
1117 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1118 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1119 | Fprocess_datagram_address (process)); |
1120 | #endif | |
1121 | ||
d888760c | 1122 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1123 | return contact; |
d888760c | 1124 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1125 | return Fcons (Fplist_get (contact, QChost), |
1126 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1127 | if (NILP (key) && SERIALCONN_P (process)) |
1128 | return Fcons (Fplist_get (contact, QCport), | |
1129 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1130 | return Fplist_get (contact, key); |
de282a05 RS |
1131 | } |
1132 | ||
faa7db08 KS |
1133 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1134 | 1, 1, 0, | |
1135 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1136 | (register Lisp_Object process) |
365aee82 | 1137 | { |
ac4a7584 | 1138 | CHECK_PROCESS (process); |
faa7db08 | 1139 | return XPROCESS (process)->plist; |
ac4a7584 | 1140 | } |
365aee82 | 1141 | |
faa7db08 KS |
1142 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1143 | 2, 2, 0, | |
26a086c6 | 1144 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1145 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1146 | { |
365aee82 | 1147 | CHECK_PROCESS (process); |
faa7db08 | 1148 | CHECK_LIST (plist); |
365aee82 | 1149 | |
faa7db08 | 1150 | XPROCESS (process)->plist = plist; |
26a086c6 | 1151 | return plist; |
365aee82 KS |
1152 | } |
1153 | ||
312c9964 RS |
1154 | #if 0 /* Turned off because we don't currently record this info |
1155 | in the process. Perhaps add it. */ | |
1156 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1157 | doc: /* Return the connection type of PROCESS. |
1158 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1159 | a socket connection. */) | |
5842a27b | 1160 | (Lisp_Object process) |
312c9964 RS |
1161 | { |
1162 | return XPROCESS (process)->type; | |
1163 | } | |
1164 | #endif | |
2a7bb882 | 1165 | |
d888760c GM |
1166 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1167 | doc: /* Return the connection type of PROCESS. | |
1168 | The value is either the symbol `real', `network', or `serial'. | |
1169 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1170 | nil, indicating the current buffer's process. */) | |
5842a27b | 1171 | (Lisp_Object process) |
d888760c GM |
1172 | { |
1173 | Lisp_Object proc; | |
1174 | proc = get_process (process); | |
1175 | return XPROCESS (proc)->type; | |
1176 | } | |
991234f0 | 1177 | |
991234f0 | 1178 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1179 | 1, 2, 0, |
991234f0 | 1180 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1181 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1182 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1183 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1184 | number in the string, even when present in ADDRESS. |
1185 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1186 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1187 | { |
991234f0 KS |
1188 | if (NILP (address)) |
1189 | return Qnil; | |
1190 | ||
1191 | if (STRINGP (address)) /* AF_LOCAL */ | |
1192 | return address; | |
1193 | ||
e1652a86 | 1194 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1195 | { |
1196 | register struct Lisp_Vector *p = XVECTOR (address); | |
d311d28c | 1197 | ptrdiff_t size = p->header.size; |
ded83665 | 1198 | Lisp_Object args[10]; |
0dccee41 | 1199 | int nargs, i; |
991234f0 | 1200 | |
eab3844f | 1201 | if (size == 4 || (size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1202 | { |
1203 | args[0] = build_string ("%d.%d.%d.%d"); | |
1204 | nargs = 4; | |
1205 | } | |
eab3844f | 1206 | else if (size == 5) |
0dccee41 KS |
1207 | { |
1208 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1209 | nargs = 5; | |
1210 | } | |
eab3844f | 1211 | else if (size == 8 || (size == 9 && !NILP (omit_port))) |
e1652a86 KS |
1212 | { |
1213 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1214 | nargs = 8; | |
1215 | } | |
eab3844f | 1216 | else if (size == 9) |
e1652a86 KS |
1217 | { |
1218 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1219 | nargs = 9; | |
1220 | } | |
0dccee41 | 1221 | else |
991234f0 KS |
1222 | return Qnil; |
1223 | ||
0dccee41 | 1224 | for (i = 0; i < nargs; i++) |
cbf23adb | 1225 | { |
d311d28c | 1226 | if (! RANGED_INTEGERP (0, p->contents[i], 65535)) |
cbf23adb JB |
1227 | return Qnil; |
1228 | ||
1229 | if (nargs <= 5 /* IPv4 */ | |
1230 | && i < 4 /* host, not port */ | |
d311d28c | 1231 | && XINT (p->contents[i]) > 255) |
cbf23adb JB |
1232 | return Qnil; |
1233 | ||
1234 | args[i+1] = p->contents[i]; | |
1235 | } | |
1236 | ||
0dccee41 | 1237 | return Fformat (nargs+1, args); |
991234f0 KS |
1238 | } |
1239 | ||
1240 | if (CONSP (address)) | |
1241 | { | |
1242 | Lisp_Object args[2]; | |
1243 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1244 | args[1] = Fcar (address); |
991234f0 | 1245 | return Fformat (2, args); |
991234f0 KS |
1246 | } |
1247 | ||
1248 | return Qnil; | |
1249 | } | |
d0d6b7c5 JB |
1250 | |
1251 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1252 | doc: /* Return a list of all processes. */) |
5842a27b | 1253 | (void) |
d0d6b7c5 JB |
1254 | { |
1255 | return Fmapcar (Qcdr, Vprocess_alist); | |
1256 | } | |
1257 | \f | |
b0310da4 JB |
1258 | /* Starting asynchronous inferior processes. */ |
1259 | ||
d3da34e0 | 1260 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1261 | |
d0d6b7c5 | 1262 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1263 | doc: /* Start a program in a subprocess. Return the process object for it. |
1264 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1265 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1266 | |
1267 | Process output (both standard output and standard error streams) goes | |
1268 | at end of BUFFER, unless you specify an output stream or filter | |
1269 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1270 | this process is not associated with any buffer. |
1271 | ||
6b8bc570 CY |
1272 | PROGRAM is the program file name. It is searched for in `exec-path' |
1273 | (which see). If nil, just associate a pty with the buffer. Remaining | |
1274 | arguments are strings to give program as arguments. | |
320aebc9 | 1275 | |
4b6c5eee EZ |
1276 | If you want to separate standard output from standard error, invoke |
1277 | the command through a shell and redirect one of them using the shell | |
1278 | syntax. | |
320aebc9 | 1279 | |
3ecdf100 | 1280 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
f66c7cf8 | 1281 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 | 1282 | { |
1e30af70 | 1283 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1284 | register unsigned char **new_argv; |
f66c7cf8 | 1285 | ptrdiff_t i; |
d311d28c | 1286 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1287 | |
1288 | buffer = args[1]; | |
1289 | if (!NILP (buffer)) | |
1290 | buffer = Fget_buffer_create (buffer); | |
1291 | ||
1e30af70 JB |
1292 | /* Make sure that the child will be able to chdir to the current |
1293 | buffer's current directory, or its unhandled equivalent. We | |
1294 | can't just have the child check for an error when it does the | |
1295 | chdir, since it's in a vfork. | |
1296 | ||
1297 | We have to GCPRO around this because Fexpand_file_name and | |
1298 | Funhandled_file_name_directory might call a file name handling | |
1299 | function. The argument list is protected by the caller, so all | |
1300 | we really have to worry about is buffer. */ | |
1301 | { | |
1302 | struct gcpro gcpro1, gcpro2; | |
1303 | ||
4b4deea2 | 1304 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1305 | |
1306 | GCPRO2 (buffer, current_dir); | |
1307 | ||
ca319910 SM |
1308 | current_dir = Funhandled_file_name_directory (current_dir); |
1309 | if (NILP (current_dir)) | |
1310 | /* If the file name handler says that current_dir is unreachable, use | |
1311 | a sensible default. */ | |
1312 | current_dir = build_string ("~/"); | |
1313 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1314 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1315 | report_file_error ("Setting current directory", | |
4b4deea2 | 1316 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1317 | |
1318 | UNGCPRO; | |
1319 | } | |
1320 | ||
d0d6b7c5 | 1321 | name = args[0]; |
b7826503 | 1322 | CHECK_STRING (name); |
d0d6b7c5 JB |
1323 | |
1324 | program = args[2]; | |
1325 | ||
850d0752 NR |
1326 | if (!NILP (program)) |
1327 | CHECK_STRING (program); | |
d0d6b7c5 | 1328 | |
d0d6b7c5 | 1329 | proc = make_process (name); |
b0310da4 JB |
1330 | /* If an error occurs and we can't start the process, we want to |
1331 | remove it from the process list. This means that each error | |
1332 | check in create_process doesn't need to call remove_process | |
1333 | itself; it's all taken care of here. */ | |
1334 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1335 | |
1336 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1337 | XPROCESS (proc)->plist = Qnil; |
d888760c | 1338 | XPROCESS (proc)->type = Qreal; |
d0d6b7c5 JB |
1339 | XPROCESS (proc)->buffer = buffer; |
1340 | XPROCESS (proc)->sentinel = Qnil; | |
1341 | XPROCESS (proc)->filter = Qnil; | |
1342 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); | |
1343 | ||
8af55556 TZ |
1344 | #ifdef HAVE_GNUTLS |
1345 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1346 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
1347 | XPROCESS (proc)->gnutls_cred_type = Qnil; | |
1348 | #endif | |
1349 | ||
6b61353c | 1350 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1351 | XPROCESS (proc)->adaptive_read_buffering |
1352 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1353 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1354 | #endif |
1355 | ||
7af71e17 | 1356 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1357 | if (BUFFERP (buffer)) |
d8a2934e RS |
1358 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1359 | BUF_ZV (XBUFFER (buffer)), | |
1360 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1361 | |
67918941 | 1362 | { |
d5d4ae71 KH |
1363 | /* Decide coding systems for communicating with the process. Here |
1364 | we don't setup the structure coding_system nor pay attention to | |
1365 | unibyte mode. They are done in create_process. */ | |
1366 | ||
67918941 RS |
1367 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1368 | Lisp_Object coding_systems = Qt; | |
1369 | Lisp_Object val, *args2; | |
a4a37e65 | 1370 | struct gcpro gcpro1, gcpro2; |
67918941 | 1371 | |
d5d4ae71 KH |
1372 | val = Vcoding_system_for_read; |
1373 | if (NILP (val)) | |
67918941 RS |
1374 | { |
1375 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1376 | args2[0] = Qstart_process; | |
1377 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1378 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1379 | if (!NILP (program)) |
1380 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1381 | UNGCPRO; |
1382 | if (CONSP (coding_systems)) | |
70949dac | 1383 | val = XCAR (coding_systems); |
67918941 | 1384 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1385 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1386 | } |
1387 | XPROCESS (proc)->decode_coding_system = val; | |
1388 | ||
d5d4ae71 KH |
1389 | val = Vcoding_system_for_write; |
1390 | if (NILP (val)) | |
67918941 RS |
1391 | { |
1392 | if (EQ (coding_systems, Qt)) | |
1393 | { | |
dd5963ea | 1394 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1395 | args2[0] = Qstart_process; |
1396 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1397 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1398 | if (!NILP (program)) |
1399 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1400 | UNGCPRO; |
1401 | } | |
1402 | if (CONSP (coding_systems)) | |
70949dac | 1403 | val = XCDR (coding_systems); |
67918941 | 1404 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1405 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1406 | } |
1407 | XPROCESS (proc)->encode_coding_system = val; | |
fcaf8878 KH |
1408 | /* Note: At this momemnt, the above coding system may leave |
1409 | text-conversion or eol-conversion unspecified. They will be | |
1410 | decided after we read output from the process and decode it by | |
1411 | some coding system, or just before we actually send a text to | |
1412 | the process. */ | |
67918941 | 1413 | } |
0fa1789e | 1414 | |
a4a37e65 | 1415 | |
cbe81f1d | 1416 | XPROCESS (proc)->decoding_buf = empty_unibyte_string; |
850d0752 | 1417 | XPROCESS (proc)->decoding_carryover = 0; |
cbe81f1d | 1418 | XPROCESS (proc)->encoding_buf = empty_unibyte_string; |
ed30cf85 | 1419 | |
850d0752 NR |
1420 | XPROCESS (proc)->inherit_coding_system_flag |
1421 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1422 | |
850d0752 NR |
1423 | if (!NILP (program)) |
1424 | { | |
1425 | /* If program file name is not absolute, search our path for it. | |
1426 | Put the name we will really use in TEM. */ | |
1427 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1428 | && !(SCHARS (program) > 1 | |
1429 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1430 | { | |
1431 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1432 | ||
1433 | tem = Qnil; | |
1434 | GCPRO4 (name, program, buffer, current_dir); | |
1435 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1436 | UNGCPRO; | |
1437 | if (NILP (tem)) | |
1438 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1439 | tem = Fexpand_file_name (tem, Qnil); | |
1440 | } | |
1441 | else | |
1442 | { | |
1443 | if (!NILP (Ffile_directory_p (program))) | |
1444 | error ("Specified program for new process is a directory"); | |
1445 | tem = program; | |
1446 | } | |
ed30cf85 | 1447 | |
850d0752 NR |
1448 | /* If program file name starts with /: for quoting a magic name, |
1449 | discard that. */ | |
1450 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1451 | && SREF (tem, 1) == ':') | |
1452 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1453 | |
77bf07e1 | 1454 | { |
fcaf8878 | 1455 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1456 | struct gcpro gcpro1; |
1457 | GCPRO1 (tem); | |
a4a37e65 | 1458 | |
850d0752 NR |
1459 | /* Encode the file name and put it in NEW_ARGV. |
1460 | That's where the child will use it to execute the program. */ | |
1461 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1462 | |
850d0752 NR |
1463 | /* Here we encode arguments by the coding system used for sending |
1464 | data to the process. We don't support using different coding | |
1465 | systems for encoding arguments and for encoding data sent to the | |
1466 | process. */ | |
77bf07e1 | 1467 | |
850d0752 NR |
1468 | for (i = 3; i < nargs; i++) |
1469 | { | |
1470 | tem = Fcons (args[i], tem); | |
1471 | CHECK_STRING (XCAR (tem)); | |
1472 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1473 | { |
1474 | if (NILP (arg_encoding)) | |
1475 | arg_encoding = (complement_process_encoding_system | |
1476 | (XPROCESS (proc)->encode_coding_system)); | |
1477 | XSETCAR (tem, | |
1478 | code_convert_string_norecord | |
1479 | (XCAR (tem), arg_encoding, 1)); | |
1480 | } | |
850d0752 | 1481 | } |
a4a37e65 | 1482 | |
850d0752 NR |
1483 | UNGCPRO; |
1484 | } | |
0fa1789e | 1485 | |
850d0752 NR |
1486 | /* Now that everything is encoded we can collect the strings into |
1487 | NEW_ARGV. */ | |
1488 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1489 | new_argv[nargs - 2] = 0; | |
52a1b894 | 1490 | |
c5101a77 | 1491 | for (i = nargs - 2; i-- != 0; ) |
850d0752 NR |
1492 | { |
1493 | new_argv[i] = SDATA (XCAR (tem)); | |
1494 | tem = XCDR (tem); | |
1495 | } | |
1496 | ||
1497 | create_process (proc, (char **) new_argv, current_dir); | |
1498 | } | |
1499 | else | |
1500 | create_pty (proc); | |
d0d6b7c5 | 1501 | |
b0310da4 | 1502 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1503 | } |
1504 | ||
b0310da4 | 1505 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1506 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1507 | an error and the process wasn't started successfully, so we should |
1508 | remove it from the process list. */ | |
1509 | static Lisp_Object | |
d3da34e0 | 1510 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1511 | { |
bcd69aea | 1512 | if (!PROCESSP (proc)) |
b0310da4 JB |
1513 | abort (); |
1514 | ||
1515 | /* Was PROC started successfully? */ | |
850d0752 | 1516 | if (XPROCESS (proc)->pid == -1) |
b0310da4 JB |
1517 | remove_process (proc); |
1518 | ||
1519 | return Qnil; | |
1520 | } | |
1521 | ||
ff6daed3 | 1522 | static void |
d3da34e0 | 1523 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1524 | { |
30904ab7 | 1525 | /* Nothing to do. */ |
d0d6b7c5 JB |
1526 | } |
1527 | ||
30904ab7 | 1528 | |
40ccffa6 | 1529 | static void |
d3da34e0 | 1530 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1531 | { |
29ed4d51 CY |
1532 | int inchannel, outchannel; |
1533 | pid_t pid; | |
d0d6b7c5 | 1534 | int sv[2]; |
2c4df143 YM |
1535 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1536 | int wait_child_setup[2]; | |
1537 | #endif | |
0dc70c33 KH |
1538 | sigset_t procmask; |
1539 | sigset_t blocked; | |
1540 | struct sigaction sigint_action; | |
1541 | struct sigaction sigquit_action; | |
c0ad4ea5 | 1542 | struct sigaction sigpipe_action; |
0dc70c33 KH |
1543 | #ifdef AIX |
1544 | struct sigaction sighup_action; | |
1545 | #endif | |
ecd1f654 KH |
1546 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1547 | volatile int forkin, forkout; | |
1548 | volatile int pty_flag = 0; | |
3ec68006 | 1549 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1550 | extern char **environ; |
3ec68006 | 1551 | #endif |
d0d6b7c5 | 1552 | |
d0d6b7c5 JB |
1553 | inchannel = outchannel = -1; |
1554 | ||
1555 | #ifdef HAVE_PTYS | |
fe45da4e | 1556 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1557 | outchannel = inchannel = allocate_pty (); |
1558 | ||
d0d6b7c5 JB |
1559 | if (inchannel >= 0) |
1560 | { | |
2af70a0c RS |
1561 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1562 | /* On most USG systems it does not work to open the pty's tty here, | |
1563 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1564 | #ifdef O_NOCTTY |
1565 | /* Don't let this terminal become our controlling terminal | |
1566 | (in case we don't have one). */ | |
68c45bf0 | 1567 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1568 | #else |
68c45bf0 | 1569 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1570 | #endif |
1571 | if (forkin < 0) | |
1572 | report_file_error ("Opening pty", Qnil); | |
1573 | #else | |
1574 | forkin = forkout = -1; | |
2af70a0c | 1575 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1576 | pty_flag = 1; |
1577 | } | |
1578 | else | |
1579 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1580 | { |
fc14013c KH |
1581 | int tem; |
1582 | tem = pipe (sv); | |
1583 | if (tem < 0) | |
1584 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1585 | inchannel = sv[0]; |
1586 | forkout = sv[1]; | |
fc14013c KH |
1587 | tem = pipe (sv); |
1588 | if (tem < 0) | |
1589 | { | |
68c45bf0 PE |
1590 | emacs_close (inchannel); |
1591 | emacs_close (forkout); | |
fc14013c KH |
1592 | report_file_error ("Creating pipe", Qnil); |
1593 | } | |
d0d6b7c5 JB |
1594 | outchannel = sv[1]; |
1595 | forkin = sv[0]; | |
1596 | } | |
d0d6b7c5 | 1597 | |
2c4df143 YM |
1598 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1599 | { | |
1600 | int tem; | |
1601 | ||
1602 | tem = pipe (wait_child_setup); | |
1603 | if (tem < 0) | |
1604 | report_file_error ("Creating pipe", Qnil); | |
1605 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1606 | if (tem >= 0) | |
1607 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1608 | if (tem < 0) | |
1609 | { | |
1610 | emacs_close (wait_child_setup[0]); | |
1611 | emacs_close (wait_child_setup[1]); | |
1612 | report_file_error ("Setting file descriptor flags", Qnil); | |
1613 | } | |
1614 | } | |
1615 | #endif | |
1616 | ||
d0d6b7c5 JB |
1617 | #ifdef O_NONBLOCK |
1618 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1619 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1620 | #else |
1621 | #ifdef O_NDELAY | |
1622 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1623 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1624 | #endif |
1625 | #endif | |
1626 | ||
1627 | /* Record this as an active process, with its channels. | |
1628 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1629 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1630 | XPROCESS (process)->infd = inchannel; |
1631 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1632 | |
1633 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1634 | It was only used for getting the foreground tty process, so now | |
1635 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1636 | more portable (see USG_SUBTTY_WORKS above). */ | |
1637 | ||
60f0fb11 | 1638 | XPROCESS (process)->pty_flag = pty_flag; |
d0d6b7c5 JB |
1639 | XPROCESS (process)->status = Qrun; |
1640 | ||
1641 | /* Delay interrupts until we have a chance to store | |
1642 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1643 | sigemptyset (&blocked); |
1644 | #ifdef SIGCHLD | |
1645 | sigaddset (&blocked, SIGCHLD); | |
1646 | #endif | |
351e611f | 1647 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1648 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1649 | this sets the parent's signal handlers as well as the child's. | |
1650 | So delay all interrupts whose handlers the child might munge, | |
1651 | and record the current handlers so they can be restored later. */ | |
1652 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1653 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
c0ad4ea5 | 1654 | sigaddset (&blocked, SIGPIPE); sigaction (SIGPIPE, 0, &sigpipe_action); |
0dc70c33 KH |
1655 | #ifdef AIX |
1656 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1657 | #endif | |
351e611f | 1658 | #endif /* HAVE_WORKING_VFORK */ |
123403e4 | 1659 | pthread_sigmask (SIG_BLOCK, &blocked, &procmask); |
d0d6b7c5 | 1660 | |
3081bf8d | 1661 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1662 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1663 | if (inchannel > max_process_desc) |
1664 | max_process_desc = inchannel; | |
1665 | ||
d0d6b7c5 JB |
1666 | /* Until we store the proper pid, enable sigchld_handler |
1667 | to recognize an unknown pid as standing for this process. | |
1668 | It is very important not to let this `marker' value stay | |
1669 | in the table after this function has returned; if it does | |
1670 | it might cause call-process to hang and subsequent asynchronous | |
1671 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1672 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1673 | |
5cf2b69b KH |
1674 | /* This must be called after the above line because it may signal an |
1675 | error. */ | |
1676 | setup_process_coding_systems (process); | |
1677 | ||
ececcbec | 1678 | BLOCK_INPUT; |
177c0ea7 | 1679 | |
d0d6b7c5 JB |
1680 | { |
1681 | /* child_setup must clobber environ on systems with true vfork. | |
1682 | Protect it from permanent change. */ | |
1683 | char **save_environ = environ; | |
12d8b6ab | 1684 | volatile Lisp_Object encoded_current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1685 | |
e98d950b | 1686 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1687 | pid = vfork (); |
1688 | if (pid == 0) | |
e98d950b | 1689 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1690 | { |
1691 | int xforkin = forkin; | |
1692 | int xforkout = forkout; | |
1693 | ||
1694 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1695 | but fails to handle all the cases. */ | |
1696 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1697 | sigsetmask (SIGEMPTYMASK); | |
1698 | #endif | |
1699 | ||
1700 | /* Make the pty be the controlling terminal of the process. */ | |
1701 | #ifdef HAVE_PTYS | |
1702 | /* First, disconnect its current controlling terminal. */ | |
1703 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1704 | /* We tried doing setsid only if pty_flag, but it caused |
1705 | process_set_signal to fail on SGI when using a pipe. */ | |
1706 | setsid (); | |
ce4c9c90 | 1707 | /* Make the pty's terminal the controlling terminal. */ |
ce8f5a9a | 1708 | if (pty_flag && xforkin >= 0) |
39e9ebcd | 1709 | { |
39e9ebcd RS |
1710 | #ifdef TIOCSCTTY |
1711 | /* We ignore the return value | |
1712 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1713 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1714 | #endif |
39e9ebcd | 1715 | } |
d0d6b7c5 | 1716 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1717 | #ifdef USG |
000ab717 | 1718 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1719 | afterwards. Otherwise, we lose our controlling tty which |
1720 | is set when we open the pty. */ | |
1721 | setpgrp (); | |
1722 | #endif /* USG */ | |
1723 | #endif /* not HAVE_SETSID */ | |
a7ebc409 | 1724 | #if defined (LDISC1) |
9bcf8ec6 KH |
1725 | if (pty_flag && xforkin >= 0) |
1726 | { | |
1727 | struct termios t; | |
1728 | tcgetattr (xforkin, &t); | |
1729 | t.c_lflag = LDISC1; | |
1730 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1731 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1732 | } |
1733 | #else | |
aafadd9f | 1734 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1735 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1736 | { |
1737 | /* Use new line discipline. */ | |
1738 | int ldisc = NTTYDISC; | |
4458f555 | 1739 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1740 | } |
000ab717 | 1741 | #endif |
9bcf8ec6 | 1742 | #endif |
177c0ea7 | 1743 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1744 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1745 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1746 | if (pty_flag) | |
1747 | { | |
177c0ea7 | 1748 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1749 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1750 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
ce8f5a9a AS |
1751 | if (j >= 0) |
1752 | { | |
1753 | ioctl (j, TIOCNOTTY, 0); | |
1754 | emacs_close (j); | |
1755 | } | |
5a570e37 | 1756 | #ifndef USG |
d0d6b7c5 JB |
1757 | /* In order to get a controlling terminal on some versions |
1758 | of BSD, it is necessary to put the process in pgrp 0 | |
1759 | before it opens the terminal. */ | |
99c1aeca | 1760 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1761 | setpgid (0, 0); |
1762 | #else | |
d0d6b7c5 | 1763 | setpgrp (0, 0); |
3ea1d291 | 1764 | #endif |
d0d6b7c5 JB |
1765 | #endif |
1766 | } | |
1767 | #endif /* TIOCNOTTY */ | |
1768 | ||
e39a993c | 1769 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1770 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1771 | conditional on TIOCSPGRP, |
1772 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1773 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1774 | that system does seem to need this code, even though | |
1775 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1776 | /* Now close the pty (if we had it open) and reopen it. |
1777 | This makes the pty the controlling terminal of the subprocess. */ | |
1778 | if (pty_flag) | |
1779 | { | |
99e3d726 | 1780 | |
68c45bf0 PE |
1781 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1782 | would work? */ | |
d0d6b7c5 | 1783 | if (xforkin >= 0) |
68c45bf0 PE |
1784 | emacs_close (xforkin); |
1785 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1786 | |
4aa54ba8 RS |
1787 | if (xforkin < 0) |
1788 | { | |
68c45bf0 PE |
1789 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
1790 | emacs_write (1, pty_name, strlen (pty_name)); | |
1791 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
1792 | _exit (1); |
1793 | } | |
1794 | ||
d0d6b7c5 | 1795 | } |
e39a993c | 1796 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1797 | |
d0d6b7c5 | 1798 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
1799 | if (pty_flag) |
1800 | { | |
1801 | SETUP_SLAVE_PTY; | |
1802 | } | |
d0d6b7c5 JB |
1803 | #endif /* SETUP_SLAVE_PTY */ |
1804 | #ifdef AIX | |
1805 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
1806 | Now reenable it in the child, so it will die when we want it to. */ | |
1807 | if (pty_flag) | |
1808 | signal (SIGHUP, SIG_DFL); | |
1809 | #endif | |
1810 | #endif /* HAVE_PTYS */ | |
1811 | ||
0dc70c33 KH |
1812 | signal (SIGINT, SIG_DFL); |
1813 | signal (SIGQUIT, SIG_DFL); | |
2f9a22e2 | 1814 | /* GConf causes us to ignore SIGPIPE, make sure it is restored |
c0ad4ea5 AS |
1815 | in the child. */ |
1816 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 KH |
1817 | |
1818 | /* Stop blocking signals in the child. */ | |
123403e4 | 1819 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
5e7e1da2 | 1820 | |
ab01d0a8 RS |
1821 | if (pty_flag) |
1822 | child_setup_tty (xforkout); | |
e98d950b RS |
1823 | #ifdef WINDOWSNT |
1824 | pid = child_setup (xforkin, xforkout, xforkout, | |
12d8b6ab | 1825 | new_argv, 1, encoded_current_dir); |
177c0ea7 | 1826 | #else /* not WINDOWSNT */ |
2c4df143 YM |
1827 | #ifdef FD_CLOEXEC |
1828 | emacs_close (wait_child_setup[0]); | |
1829 | #endif | |
d0d6b7c5 | 1830 | child_setup (xforkin, xforkout, xforkout, |
12d8b6ab | 1831 | new_argv, 1, encoded_current_dir); |
e98d950b | 1832 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1833 | } |
1834 | environ = save_environ; | |
1835 | } | |
1836 | ||
ececcbec RS |
1837 | UNBLOCK_INPUT; |
1838 | ||
4a127b3b | 1839 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 1840 | if (pid < 0) |
6311cf58 RS |
1841 | { |
1842 | if (forkin >= 0) | |
68c45bf0 | 1843 | emacs_close (forkin); |
6311cf58 | 1844 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1845 | emacs_close (forkout); |
6311cf58 | 1846 | } |
4a127b3b KH |
1847 | else |
1848 | { | |
1849 | /* vfork succeeded. */ | |
6bfd98e7 | 1850 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 1851 | |
e98d950b | 1852 | #ifdef WINDOWSNT |
4a127b3b | 1853 | register_child (pid, inchannel); |
e98d950b RS |
1854 | #endif /* WINDOWSNT */ |
1855 | ||
4a127b3b KH |
1856 | /* If the subfork execv fails, and it exits, |
1857 | this close hangs. I don't know why. | |
1858 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
1859 | { |
1860 | struct atimer *timer; | |
1861 | EMACS_TIME offset; | |
177c0ea7 | 1862 | |
30904ab7 GM |
1863 | stop_polling (); |
1864 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
1865 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 1866 | |
30904ab7 GM |
1867 | if (forkin >= 0) |
1868 | emacs_close (forkin); | |
1869 | ||
1870 | cancel_atimer (timer); | |
1871 | start_polling (); | |
1872 | } | |
177c0ea7 | 1873 | |
4a127b3b | 1874 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1875 | emacs_close (forkout); |
d0d6b7c5 | 1876 | |
875e6b94 | 1877 | #ifdef HAVE_PTYS |
4a127b3b KH |
1878 | if (pty_flag) |
1879 | XPROCESS (process)->tty_name = build_string (pty_name); | |
1880 | else | |
875e6b94 | 1881 | #endif |
4a127b3b | 1882 | XPROCESS (process)->tty_name = Qnil; |
2c4df143 YM |
1883 | |
1884 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
1885 | /* Wait for child_setup to complete in case that vfork is | |
1886 | actually defined as fork. The descriptor wait_child_setup[1] | |
1887 | of a pipe is closed at the child side either by close-on-exec | |
1888 | on successful execvp or the _exit call in child_setup. */ | |
1889 | { | |
1890 | char dummy; | |
1891 | ||
1892 | emacs_close (wait_child_setup[1]); | |
1893 | emacs_read (wait_child_setup[0], &dummy, 1); | |
1894 | emacs_close (wait_child_setup[0]); | |
1895 | } | |
1896 | #endif | |
4a127b3b | 1897 | } |
3b9a3dfa | 1898 | |
4a127b3b KH |
1899 | /* Restore the signal state whether vfork succeeded or not. |
1900 | (We will signal an error, below, if it failed.) */ | |
351e611f | 1901 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1902 | /* Restore the parent's signal handlers. */ |
1903 | sigaction (SIGINT, &sigint_action, 0); | |
1904 | sigaction (SIGQUIT, &sigquit_action, 0); | |
c0ad4ea5 | 1905 | sigaction (SIGPIPE, &sigpipe_action, 0); |
0dc70c33 KH |
1906 | #ifdef AIX |
1907 | sigaction (SIGHUP, &sighup_action, 0); | |
1908 | #endif | |
351e611f | 1909 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 | 1910 | /* Stop blocking signals in the parent. */ |
123403e4 | 1911 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
4a127b3b KH |
1912 | |
1913 | /* Now generate the error if vfork failed. */ | |
1914 | if (pid < 0) | |
1915 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 1916 | } |
d0d6b7c5 | 1917 | |
850d0752 | 1918 | void |
d3da34e0 | 1919 | create_pty (Lisp_Object process) |
850d0752 NR |
1920 | { |
1921 | int inchannel, outchannel; | |
afd4052b | 1922 | int pty_flag = 0; |
850d0752 NR |
1923 | |
1924 | inchannel = outchannel = -1; | |
1925 | ||
1926 | #ifdef HAVE_PTYS | |
1927 | if (!NILP (Vprocess_connection_type)) | |
1928 | outchannel = inchannel = allocate_pty (); | |
1929 | ||
1930 | if (inchannel >= 0) | |
1931 | { | |
1932 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
1933 | /* On most USG systems it does not work to open the pty's tty here, | |
1934 | then close it and reopen it in the child. */ | |
1935 | #ifdef O_NOCTTY | |
1936 | /* Don't let this terminal become our controlling terminal | |
1937 | (in case we don't have one). */ | |
afd4052b | 1938 | int forkout = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
850d0752 | 1939 | #else |
afd4052b | 1940 | int forkout = emacs_open (pty_name, O_RDWR, 0); |
850d0752 | 1941 | #endif |
aba7731a | 1942 | if (forkout < 0) |
850d0752 | 1943 | report_file_error ("Opening pty", Qnil); |
019d2c4c | 1944 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
1945 | /* In the case that vfork is defined as fork, the parent process |
1946 | (Emacs) may send some data before the child process completes | |
1947 | tty options setup. So we setup tty before forking. */ | |
1948 | child_setup_tty (forkout); | |
019d2c4c | 1949 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
1950 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
1951 | pty_flag = 1; | |
1952 | } | |
1953 | #endif /* HAVE_PTYS */ | |
1954 | ||
1955 | #ifdef O_NONBLOCK | |
1956 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
1957 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
1958 | #else | |
1959 | #ifdef O_NDELAY | |
1960 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
1961 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
1962 | #endif | |
1963 | #endif | |
1964 | ||
1965 | /* Record this as an active process, with its channels. | |
1966 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1967 | chan_process[inchannel] = process; | |
1968 | XPROCESS (process)->infd = inchannel; | |
1969 | XPROCESS (process)->outfd = outchannel; | |
1970 | ||
1971 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1972 | It was only used for getting the foreground tty process, so now | |
1973 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1974 | more portable (see USG_SUBTTY_WORKS above). */ | |
1975 | ||
1976 | XPROCESS (process)->pty_flag = pty_flag; | |
1977 | XPROCESS (process)->status = Qrun; | |
1978 | setup_process_coding_systems (process); | |
1979 | ||
1980 | FD_SET (inchannel, &input_wait_mask); | |
1981 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
1982 | if (inchannel > max_process_desc) | |
1983 | max_process_desc = inchannel; | |
1984 | ||
1985 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
1986 | #ifdef HAVE_PTYS |
1987 | if (pty_flag) | |
1988 | XPROCESS (process)->tty_name = build_string (pty_name); | |
1989 | else | |
1990 | #endif | |
1991 | XPROCESS (process)->tty_name = Qnil; | |
850d0752 NR |
1992 | } |
1993 | ||
e690ca94 | 1994 | \f |
e690ca94 KS |
1995 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
1996 | The address family of sa is not included in the result. */ | |
1997 | ||
1998 | static Lisp_Object | |
d3da34e0 | 1999 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
2000 | { |
2001 | Lisp_Object address; | |
2002 | int i; | |
2003 | unsigned char *cp; | |
2004 | register struct Lisp_Vector *p; | |
2005 | ||
63136da6 AS |
2006 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2007 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2008 | a zero length name. */ | |
89887d67 | 2009 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2010 | return empty_unibyte_string; |
63136da6 | 2011 | |
e690ca94 KS |
2012 | switch (sa->sa_family) |
2013 | { | |
2014 | case AF_INET: | |
2015 | { | |
2016 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2017 | len = sizeof (sin->sin_addr) + 1; | |
2018 | address = Fmake_vector (make_number (len), Qnil); | |
2019 | p = XVECTOR (address); | |
2020 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2021 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2022 | break; |
2023 | } | |
e1652a86 KS |
2024 | #ifdef AF_INET6 |
2025 | case AF_INET6: | |
2026 | { | |
2027 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2028 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2029 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2030 | address = Fmake_vector (make_number (len), Qnil); | |
2031 | p = XVECTOR (address); | |
2032 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2033 | for (i = 0; i < len; i++) | |
2034 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2035 | return address; | |
2036 | } | |
2037 | #endif | |
e690ca94 KS |
2038 | #ifdef HAVE_LOCAL_SOCKETS |
2039 | case AF_LOCAL: | |
2040 | { | |
fb23673a EZ |
2041 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2042 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2043 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2044 | break; |
fb23673a | 2045 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2046 | } |
2047 | #endif | |
2048 | default: | |
89887d67 | 2049 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2050 | address = Fcons (make_number (sa->sa_family), |
2051 | Fmake_vector (make_number (len), Qnil)); | |
2052 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2053 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2054 | break; |
2055 | } | |
2056 | ||
2057 | i = 0; | |
2058 | while (i < len) | |
2059 | p->contents[i++] = make_number (*cp++); | |
2060 | ||
2061 | return address; | |
2062 | } | |
2063 | ||
2064 | ||
2065 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2066 | ||
2067 | static int | |
d3da34e0 | 2068 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2069 | { |
2070 | register struct Lisp_Vector *p; | |
2071 | ||
2072 | if (VECTORP (address)) | |
2073 | { | |
2074 | p = XVECTOR (address); | |
eab3844f | 2075 | if (p->header.size == 5) |
e690ca94 KS |
2076 | { |
2077 | *familyp = AF_INET; | |
2078 | return sizeof (struct sockaddr_in); | |
2079 | } | |
e1652a86 | 2080 | #ifdef AF_INET6 |
eab3844f | 2081 | else if (p->header.size == 9) |
e1652a86 KS |
2082 | { |
2083 | *familyp = AF_INET6; | |
2084 | return sizeof (struct sockaddr_in6); | |
2085 | } | |
2086 | #endif | |
e690ca94 KS |
2087 | } |
2088 | #ifdef HAVE_LOCAL_SOCKETS | |
2089 | else if (STRINGP (address)) | |
2090 | { | |
2091 | *familyp = AF_LOCAL; | |
2092 | return sizeof (struct sockaddr_un); | |
2093 | } | |
2094 | #endif | |
d311d28c PE |
2095 | else if (CONSP (address) && TYPE_RANGED_INTEGERP (int, XCAR (address)) |
2096 | && VECTORP (XCDR (address))) | |
e690ca94 KS |
2097 | { |
2098 | struct sockaddr *sa; | |
2099 | *familyp = XINT (XCAR (address)); | |
2100 | p = XVECTOR (XCDR (address)); | |
eab3844f | 2101 | return p->header.size + sizeof (sa->sa_family); |
e690ca94 KS |
2102 | } |
2103 | return 0; | |
2104 | } | |
2105 | ||
2106 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2107 | |
2108 | The address format has been basically validated by | |
2109 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2110 | it could have come from user data. So if FAMILY is not valid, | |
2111 | we return after zeroing *SA. */ | |
e690ca94 KS |
2112 | |
2113 | static void | |
d3da34e0 | 2114 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2115 | { |
2116 | register struct Lisp_Vector *p; | |
34967d0f | 2117 | register unsigned char *cp = NULL; |
e690ca94 | 2118 | register int i; |
d311d28c | 2119 | EMACS_INT hostport; |
e690ca94 | 2120 | |
72af86bd | 2121 | memset (sa, 0, len); |
e690ca94 KS |
2122 | |
2123 | if (VECTORP (address)) | |
2124 | { | |
2125 | p = XVECTOR (address); | |
2126 | if (family == AF_INET) | |
2127 | { | |
2128 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2129 | len = sizeof (sin->sin_addr) + 1; | |
d311d28c PE |
2130 | hostport = XINT (p->contents[--len]); |
2131 | sin->sin_port = htons (hostport); | |
e690ca94 | 2132 | cp = (unsigned char *)&sin->sin_addr; |
9d1a8e5d | 2133 | sa->sa_family = family; |
e690ca94 | 2134 | } |
e1652a86 KS |
2135 | #ifdef AF_INET6 |
2136 | else if (family == AF_INET6) | |
2137 | { | |
2138 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2139 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2140 | len = sizeof (sin6->sin6_addr) + 1; | |
d311d28c PE |
2141 | hostport = XINT (p->contents[--len]); |
2142 | sin6->sin6_port = htons (hostport); | |
e1652a86 KS |
2143 | for (i = 0; i < len; i++) |
2144 | if (INTEGERP (p->contents[i])) | |
2145 | { | |
2146 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2147 | ip6[i] = ntohs (j); | |
2148 | } | |
9d1a8e5d | 2149 | sa->sa_family = family; |
0eb7675e | 2150 | return; |
e1652a86 KS |
2151 | } |
2152 | #endif | |
0eb7675e AS |
2153 | else |
2154 | return; | |
e690ca94 KS |
2155 | } |
2156 | else if (STRINGP (address)) | |
2157 | { | |
2158 | #ifdef HAVE_LOCAL_SOCKETS | |
2159 | if (family == AF_LOCAL) | |
2160 | { | |
fb23673a | 2161 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2162 | cp = SDATA (address); |
fb23673a EZ |
2163 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2164 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2165 | sa->sa_family = family; |
e690ca94 KS |
2166 | } |
2167 | #endif | |
2168 | return; | |
2169 | } | |
2170 | else | |
2171 | { | |
2172 | p = XVECTOR (XCDR (address)); | |
2173 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2174 | } | |
2175 | ||
2176 | for (i = 0; i < len; i++) | |
2177 | if (INTEGERP (p->contents[i])) | |
2178 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2179 | } | |
2180 | ||
2181 | #ifdef DATAGRAM_SOCKETS | |
2182 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2183 | 1, 1, 0, | |
2184 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2185 | (Lisp_Object process) |
e690ca94 KS |
2186 | { |
2187 | int channel; | |
2188 | ||
2189 | CHECK_PROCESS (process); | |
2190 | ||
2191 | if (!DATAGRAM_CONN_P (process)) | |
2192 | return Qnil; | |
2193 | ||
60f0fb11 | 2194 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2195 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2196 | datagram_address[channel].len); | |
2197 | } | |
2198 | ||
2199 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2200 | 2, 2, 0, | |
2201 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2202 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2203 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2204 | { |
2205 | int channel; | |
2206 | int family, len; | |
2207 | ||
2208 | CHECK_PROCESS (process); | |
2209 | ||
2210 | if (!DATAGRAM_CONN_P (process)) | |
2211 | return Qnil; | |
2212 | ||
60f0fb11 | 2213 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2214 | |
2215 | len = get_lisp_to_sockaddr_size (address, &family); | |
2216 | if (datagram_address[channel].len != len) | |
2217 | return Qnil; | |
2218 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2219 | return address; | |
2220 | } | |
2221 | #endif | |
2222 | \f | |
2223 | ||
5e2327cf | 2224 | static const struct socket_options { |
e690ca94 | 2225 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2226 | name without SO_ prefix. */ |
fce70521 | 2227 | const char *name; |
e690ca94 KS |
2228 | /* Option level SOL_... */ |
2229 | int optlevel; | |
2230 | /* Option number SO_... */ | |
2231 | int optnum; | |
6b61353c KH |
2232 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2233 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2234 | } socket_options[] = |
2235 | { | |
2236 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2237 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2238 | #endif |
2239 | #ifdef SO_BROADCAST | |
6b61353c | 2240 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2241 | #endif |
2242 | #ifdef SO_DONTROUTE | |
6b61353c | 2243 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2244 | #endif |
2245 | #ifdef SO_KEEPALIVE | |
6b61353c | 2246 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2247 | #endif |
2248 | #ifdef SO_LINGER | |
6b61353c | 2249 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2250 | #endif |
2251 | #ifdef SO_OOBINLINE | |
6b61353c | 2252 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2253 | #endif |
2254 | #ifdef SO_PRIORITY | |
6b61353c | 2255 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2256 | #endif |
2257 | #ifdef SO_REUSEADDR | |
6b61353c | 2258 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2259 | #endif |
6b61353c | 2260 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2261 | }; |
2262 | ||
6b61353c | 2263 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2264 | |
6b61353c KH |
2265 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2266 | Signals an error if setting a known option fails. | |
2267 | */ | |
e690ca94 KS |
2268 | |
2269 | static int | |
d3da34e0 | 2270 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2271 | { |
6b61353c | 2272 | char *name; |
5e2327cf | 2273 | const struct socket_options *sopt; |
6b61353c | 2274 | int ret = 0; |
e690ca94 | 2275 | |
6b61353c | 2276 | CHECK_SYMBOL (opt); |
e690ca94 | 2277 | |
51b59d79 | 2278 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2279 | for (sopt = socket_options; sopt->name; sopt++) |
2280 | if (strcmp (name, sopt->name) == 0) | |
2281 | break; | |
e690ca94 | 2282 | |
6b61353c KH |
2283 | switch (sopt->opttype) |
2284 | { | |
2285 | case SOPT_BOOL: | |
2286 | { | |
2287 | int optval; | |
2288 | optval = NILP (val) ? 0 : 1; | |
2289 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2290 | &optval, sizeof (optval)); | |
2291 | break; | |
2292 | } | |
e690ca94 | 2293 | |
6b61353c KH |
2294 | case SOPT_INT: |
2295 | { | |
2296 | int optval; | |
d311d28c | 2297 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2298 | optval = XINT (val); |
2299 | else | |
2300 | error ("Bad option value for %s", name); | |
2301 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2302 | &optval, sizeof (optval)); | |
2303 | break; | |
2304 | } | |
e690ca94 | 2305 | |
6b61353c KH |
2306 | #ifdef SO_BINDTODEVICE |
2307 | case SOPT_IFNAME: | |
2308 | { | |
2309 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2310 | |
6b61353c KH |
2311 | /* This is broken, at least in the Linux 2.4 kernel. |
2312 | To unbind, the arg must be a zero integer, not the empty string. | |
2313 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2314 | memset (devname, 0, sizeof devname); |
6b61353c | 2315 | if (STRINGP (val)) |
e690ca94 | 2316 | { |
51b59d79 | 2317 | char *arg = SSDATA (val); |
6b61353c | 2318 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2319 | memcpy (devname, arg, len); |
e690ca94 | 2320 | } |
6b61353c KH |
2321 | else if (!NILP (val)) |
2322 | error ("Bad option value for %s", name); | |
2323 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2324 | devname, IFNAMSIZ); | |
2325 | break; | |
2326 | } | |
2327 | #endif | |
e690ca94 | 2328 | |
177c0ea7 | 2329 | #ifdef SO_LINGER |
6b61353c KH |
2330 | case SOPT_LINGER: |
2331 | { | |
2332 | struct linger linger; | |
e690ca94 | 2333 | |
6b61353c KH |
2334 | linger.l_onoff = 1; |
2335 | linger.l_linger = 0; | |
d311d28c | 2336 | if (TYPE_RANGED_INTEGERP (int, val)) |
6b61353c KH |
2337 | linger.l_linger = XINT (val); |
2338 | else | |
2339 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2340 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2341 | &linger, sizeof (linger)); | |
2342 | break; | |
2343 | } | |
e690ca94 | 2344 | #endif |
6b61353c KH |
2345 | |
2346 | default: | |
2347 | return 0; | |
e690ca94 | 2348 | } |
6b61353c KH |
2349 | |
2350 | if (ret < 0) | |
2351 | report_file_error ("Cannot set network option", | |
2352 | Fcons (opt, Fcons (val, Qnil))); | |
2353 | return (1 << sopt->optbit); | |
e690ca94 KS |
2354 | } |
2355 | ||
6b61353c KH |
2356 | |
2357 | DEFUN ("set-network-process-option", | |
2358 | Fset_network_process_option, Sset_network_process_option, | |
2359 | 3, 4, 0, | |
2360 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2361 | See `make-network-process' for a list of options and values. | |
2362 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2363 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2364 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2365 | { |
6b61353c KH |
2366 | int s; |
2367 | struct Lisp_Process *p; | |
e690ca94 | 2368 | |
e690ca94 | 2369 | CHECK_PROCESS (process); |
6b61353c KH |
2370 | p = XPROCESS (process); |
2371 | if (!NETCONN1_P (p)) | |
2372 | error ("Process is not a network process"); | |
2373 | ||
60f0fb11 | 2374 | s = p->infd; |
6b61353c KH |
2375 | if (s < 0) |
2376 | error ("Process is not running"); | |
2377 | ||
2378 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2379 | { |
6b61353c KH |
2380 | p->childp = Fplist_put (p->childp, option, value); |
2381 | return Qt; | |
e690ca94 | 2382 | } |
6b61353c KH |
2383 | |
2384 | if (NILP (no_error)) | |
2385 | error ("Unknown or unsupported option"); | |
2386 | ||
2387 | return Qnil; | |
e690ca94 | 2388 | } |
6b61353c | 2389 | |
e690ca94 | 2390 | \f |
d888760c GM |
2391 | DEFUN ("serial-process-configure", |
2392 | Fserial_process_configure, | |
2393 | Sserial_process_configure, | |
2394 | 0, MANY, 0, | |
2395 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2396 | ||
2397 | Arguments are specified as keyword/argument pairs. Attributes that | |
2398 | are not given are re-initialized from the process's current | |
2399 | configuration (available via the function `process-contact') or set to | |
2400 | reasonable default values. The following arguments are defined: | |
2401 | ||
2402 | :process PROCESS | |
2403 | :name NAME | |
2404 | :buffer BUFFER | |
2405 | :port PORT | |
2406 | -- Any of these arguments can be given to identify the process that is | |
2407 | to be configured. If none of these arguments is given, the current | |
2408 | buffer's process is used. | |
2409 | ||
2410 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2411 | second, also called baud rate. Any value can be given for SPEED, but | |
2412 | most serial ports work only at a few defined values between 1200 and | |
2413 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2414 | serial port is not configured any further, i.e., all other arguments | |
2415 | are ignored. This may be useful for special serial ports such as | |
2416 | Bluetooth-to-serial converters which can only be configured through AT | |
2417 | commands. A value of nil for SPEED can be used only when passed | |
2418 | through `make-serial-process' or `serial-term'. | |
2419 | ||
2420 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2421 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2422 | ||
2423 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2424 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2425 | PARITY is not given, no parity is used. | |
2426 | ||
2427 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2428 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2429 | is not given or nil, 1 stopbit is used. | |
2430 | ||
2431 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2432 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2433 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2434 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2435 | flowcontrol is used. | |
2436 | ||
2437 | `serial-process-configure' is called by `make-serial-process' for the | |
2438 | initial configuration of the serial port. | |
2439 | ||
2440 | Examples: | |
2441 | ||
2442 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2443 | ||
2444 | \(serial-process-configure | |
2445 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2446 | ||
2447 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2448 | ||
2449 | usage: (serial-process-configure &rest ARGS) */) | |
f66c7cf8 | 2450 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2451 | { |
2452 | struct Lisp_Process *p; | |
2453 | Lisp_Object contact = Qnil; | |
2454 | Lisp_Object proc = Qnil; | |
2455 | struct gcpro gcpro1; | |
2456 | ||
2457 | contact = Flist (nargs, args); | |
2458 | GCPRO1 (contact); | |
2459 | ||
2460 | proc = Fplist_get (contact, QCprocess); | |
2461 | if (NILP (proc)) | |
2462 | proc = Fplist_get (contact, QCname); | |
2463 | if (NILP (proc)) | |
2464 | proc = Fplist_get (contact, QCbuffer); | |
2465 | if (NILP (proc)) | |
2466 | proc = Fplist_get (contact, QCport); | |
2467 | proc = get_process (proc); | |
2468 | p = XPROCESS (proc); | |
a879ee6f | 2469 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2470 | error ("Not a serial process"); |
2471 | ||
2472 | if (NILP (Fplist_get (p->childp, QCspeed))) | |
2473 | { | |
2474 | UNGCPRO; | |
2475 | return Qnil; | |
2476 | } | |
2477 | ||
2478 | serial_configure (p, contact); | |
2479 | ||
2480 | UNGCPRO; | |
2481 | return Qnil; | |
2482 | } | |
d888760c | 2483 | |
d888760c | 2484 | /* Used by make-serial-process to recover from errors. */ |
b766f867 PE |
2485 | static Lisp_Object |
2486 | make_serial_process_unwind (Lisp_Object proc) | |
d888760c GM |
2487 | { |
2488 | if (!PROCESSP (proc)) | |
2489 | abort (); | |
2490 | remove_process (proc); | |
2491 | return Qnil; | |
2492 | } | |
d888760c | 2493 | |
d888760c GM |
2494 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2495 | 0, MANY, 0, | |
2496 | doc: /* Create and return a serial port process. | |
2497 | ||
2498 | In Emacs, serial port connections are represented by process objects, | |
2499 | so input and output work as for subprocesses, and `delete-process' | |
2500 | closes a serial port connection. However, a serial process has no | |
2501 | process id, it cannot be signaled, and the status codes are different | |
2502 | from normal processes. | |
2503 | ||
2504 | `make-serial-process' creates a process and a buffer, on which you | |
2505 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2506 | an interactive terminal. See below for examples. | |
2507 | ||
2508 | Arguments are specified as keyword/argument pairs. The following | |
2509 | arguments are defined: | |
2510 | ||
2511 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2512 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2513 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2514 | the backslashes in strings). | |
2515 | ||
2516 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
2517 | which is called by `make-serial-process'. | |
2518 | ||
2519 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2520 | the value of PORT is used. | |
2521 | ||
2522 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2523 | with the process. Process output goes at the end of that buffer, | |
2524 | unless you specify an output stream or filter function to handle the | |
2525 | output. If BUFFER is not given, the value of NAME is used. | |
2526 | ||
2527 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2528 | system used for both reading and writing for this process. If CODING | |
2529 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2530 | ENCODING is used for writing. | |
2531 | ||
2532 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2533 | the process is running. If BOOL is not given, query before exiting. | |
2534 | ||
2535 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2536 | In the stopped state, a serial process does not accept incoming data, | |
2537 | but you can send outgoing data. The stopped state is cleared by | |
2538 | `continue-process' and set by `stop-process'. | |
2539 | ||
2540 | :filter FILTER -- Install FILTER as the process filter. | |
2541 | ||
2542 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2543 | ||
2544 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2545 | ||
2546 | :speed | |
2547 | :bytesize | |
2548 | :parity | |
2549 | :stopbits | |
2550 | :flowcontrol | |
2551 | -- These arguments are handled by `serial-process-configure', which is | |
2552 | called by `make-serial-process'. | |
2553 | ||
2554 | The original argument list, possibly modified by later configuration, | |
2555 | is available via the function `process-contact'. | |
2556 | ||
2557 | Examples: | |
2558 | ||
2559 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2560 | ||
2561 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2562 | ||
2563 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2564 | ||
2565 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2566 | ||
2567 | usage: (make-serial-process &rest ARGS) */) | |
f66c7cf8 | 2568 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2569 | { |
2570 | int fd = -1; | |
2571 | Lisp_Object proc, contact, port; | |
2572 | struct Lisp_Process *p; | |
2573 | struct gcpro gcpro1; | |
2574 | Lisp_Object name, buffer; | |
2575 | Lisp_Object tem, val; | |
d311d28c | 2576 | ptrdiff_t specpdl_count = -1; |
d888760c GM |
2577 | |
2578 | if (nargs == 0) | |
2579 | return Qnil; | |
2580 | ||
2581 | contact = Flist (nargs, args); | |
2582 | GCPRO1 (contact); | |
2583 | ||
2584 | port = Fplist_get (contact, QCport); | |
2585 | if (NILP (port)) | |
2586 | error ("No port specified"); | |
2587 | CHECK_STRING (port); | |
2588 | ||
2589 | if (NILP (Fplist_member (contact, QCspeed))) | |
2590 | error (":speed not specified"); | |
2591 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2592 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2593 | ||
2594 | name = Fplist_get (contact, QCname); | |
2595 | if (NILP (name)) | |
2596 | name = port; | |
2597 | CHECK_STRING (name); | |
2598 | proc = make_process (name); | |
2599 | specpdl_count = SPECPDL_INDEX (); | |
2600 | record_unwind_protect (make_serial_process_unwind, proc); | |
2601 | p = XPROCESS (proc); | |
2602 | ||
51b59d79 | 2603 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2604 | p->infd = fd; |
2605 | p->outfd = fd; | |
2606 | if (fd > max_process_desc) | |
2607 | max_process_desc = fd; | |
2608 | chan_process[fd] = proc; | |
2609 | ||
2610 | buffer = Fplist_get (contact, QCbuffer); | |
2611 | if (NILP (buffer)) | |
2612 | buffer = name; | |
2613 | buffer = Fget_buffer_create (buffer); | |
2614 | p->buffer = buffer; | |
2615 | ||
2616 | p->childp = contact; | |
2617 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); | |
2618 | p->type = Qserial; | |
2619 | p->sentinel = Fplist_get (contact, QCsentinel); | |
2620 | p->filter = Fplist_get (contact, QCfilter); | |
2621 | p->log = Qnil; | |
2622 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
2623 | p->kill_without_query = 1; | |
2624 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
2625 | p->command = Qt; | |
2626 | p->pty_flag = 0; | |
2627 | ||
2628 | if (!EQ (p->command, Qt)) | |
2629 | { | |
2630 | FD_SET (fd, &input_wait_mask); | |
2631 | FD_SET (fd, &non_keyboard_wait_mask); | |
2632 | } | |
2633 | ||
2634 | if (BUFFERP (buffer)) | |
2635 | { | |
2636 | set_marker_both (p->mark, buffer, | |
2637 | BUF_ZV (XBUFFER (buffer)), | |
2638 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2639 | } | |
2640 | ||
2641 | tem = Fplist_member (contact, QCcoding); | |
2642 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2643 | tem = Qnil; | |
2644 | ||
2645 | val = Qnil; | |
2646 | if (!NILP (tem)) | |
2647 | { | |
2648 | val = XCAR (XCDR (tem)); | |
2649 | if (CONSP (val)) | |
2650 | val = XCAR (val); | |
2651 | } | |
2652 | else if (!NILP (Vcoding_system_for_read)) | |
2653 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2654 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2655 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c GM |
2656 | val = Qnil; |
2657 | p->decode_coding_system = val; | |
2658 | ||
2659 | val = Qnil; | |
2660 | if (!NILP (tem)) | |
2661 | { | |
2662 | val = XCAR (XCDR (tem)); | |
2663 | if (CONSP (val)) | |
2664 | val = XCDR (val); | |
2665 | } | |
2666 | else if (!NILP (Vcoding_system_for_write)) | |
2667 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2668 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2669 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c GM |
2670 | val = Qnil; |
2671 | p->encode_coding_system = val; | |
2672 | ||
2673 | setup_process_coding_systems (proc); | |
cbe81f1d | 2674 | p->decoding_buf = empty_unibyte_string; |
d888760c | 2675 | p->decoding_carryover = 0; |
cbe81f1d | 2676 | p->encoding_buf = empty_unibyte_string; |
d888760c GM |
2677 | p->inherit_coding_system_flag |
2678 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2679 | ||
ed3751c8 | 2680 | Fserial_process_configure (nargs, args); |
d888760c GM |
2681 | |
2682 | specpdl_ptr = specpdl + specpdl_count; | |
2683 | ||
2684 | UNGCPRO; | |
2685 | return proc; | |
2686 | } | |
d888760c | 2687 | |
e690ca94 KS |
2688 | /* Create a network stream/datagram client/server process. Treated |
2689 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2690 | differences are in status display and process deletion. A network |
2691 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2692 | stop/continue it and deactivate/close it via delete-process */ |
2693 | ||
177c0ea7 JB |
2694 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2695 | 0, MANY, 0, | |
e690ca94 KS |
2696 | doc: /* Create and return a network server or client process. |
2697 | ||
fa9d4315 | 2698 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2699 | input and output work as for subprocesses and `delete-process' closes |
2700 | a network connection. However, a network process has no process id, | |
d22426e1 | 2701 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2702 | processes. |
2703 | ||
2704 | Arguments are specified as keyword/argument pairs. The following | |
2705 | arguments are defined: | |
2706 | ||
2707 | :name NAME -- NAME is name for process. It is modified if necessary | |
2708 | to make it unique. | |
2709 | ||
2710 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2711 | with the process. Process output goes at end of that buffer, unless | |
2712 | you specify an output stream or filter function to handle the output. | |
2713 | BUFFER may be also nil, meaning that this process is not associated | |
2714 | with any buffer. | |
2715 | ||
2716 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2717 | address. The symbol `local' specifies the local host. If specified | |
2718 | for a server process, it must be a valid name or address for the local | |
2719 | host, and only clients connecting to that address will be accepted. | |
2720 | ||
2721 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2722 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2723 | a random port number is selected for the server. (If Emacs was |
2724 | compiled with getaddrinfo, a port number can also be specified as a | |
2725 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2726 | |
9057ff80 | 2727 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2728 | stream type connection, `datagram' creates a datagram type connection, |
2729 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2730 | |
e690ca94 | 2731 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2732 | service specified by HOST and SERVICE. The default (nil) is to use |
2733 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2734 | and port number specified by HOST and SERVICE. Other address families | |
2735 | supported are: | |
e690ca94 | 2736 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2737 | ipv4 -- use IPv4 address family only. |
2738 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2739 | |
2740 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2741 | This parameter is ignored when opening a client process. When specified | |
2742 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2743 | ||
2744 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2745 | connection. This parameter is ignored when opening a stream server | |
2746 | process. For a datagram server process, it specifies the initial | |
2747 | setting of the remote datagram address. When specified for a client | |
2748 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2749 | ||
2750 | The format of ADDRESS depends on the address family: | |
2751 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2752 | corresponding to numeric IP address A.B.C.D and port number P. | |
2753 | - A local address is represented as a string with the address in the | |
2754 | local address space. | |
2755 | - An "unsupported family" address is represented by a cons (F . AV) | |
2756 | where F is the family number and AV is a vector containing the socket | |
2757 | address data with one element per address data byte. Do not rely on | |
2758 | this format in portable code, as it may depend on implementation | |
2759 | defined constants, data sizes, and data structure alignment. | |
2760 | ||
6b61353c KH |
2761 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2762 | system used for both reading and writing for this process. If CODING | |
2763 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2764 | ENCODING is used for writing. | |
e690ca94 KS |
2765 | |
2766 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2767 | return without waiting for the connection to complete; instead, the | |
2768 | sentinel function will be called with second arg matching "open" (if | |
2769 | successful) or "failed" when the connect completes. Default is to use | |
2770 | a blocking connect (i.e. wait) for stream type connections. | |
2771 | ||
2772 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2773 | running when Emacs is exited. |
e690ca94 KS |
2774 | |
2775 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2776 | In the stopped state, a server process does not accept new | |
2777 | connections, and a client process does not handle incoming traffic. | |
2778 | The stopped state is cleared by `continue-process' and set by | |
2779 | `stop-process'. | |
2780 | ||
2781 | :filter FILTER -- Install FILTER as the process filter. | |
2782 | ||
7392e23c KS |
2783 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2784 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2785 | If this keyword is not specified, the strings are multibyte if |
03f04413 KH |
2786 | `default-enable-multibyte-characters' is non-nil. |
2787 | ||
e690ca94 KS |
2788 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2789 | ||
2790 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2791 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2792 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2793 | is the server process, CLIENT is the new process for the connection, | |
2794 | and MESSAGE is a string. | |
2795 | ||
faa7db08 | 2796 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2797 | |
6b61353c | 2798 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2799 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2800 | If QLEN is an integer, it is used as the max. length of the server's |
2801 | pending connection queue (also known as the backlog); the default | |
2802 | queue length is 5. Default is to create a client process. | |
2803 | ||
2804 | The following network options can be specified for this connection: | |
2805 | ||
2806 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2807 | :dontroute BOOL -- Only send to directly connected hosts. | |
2808 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2809 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2810 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2811 | :priority INT -- Set protocol defined priority for sent packets. | |
2812 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2813 | (this is allowed by default for a server process). | |
2814 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2815 | special privileges on some systems. | |
2816 | ||
2817 | Consult the relevant system programmer's manual pages for more | |
2818 | information on using these options. | |
2819 | ||
2820 | ||
2821 | A server process will listen for and accept connections from clients. | |
2822 | When a client connection is accepted, a new network process is created | |
2823 | for the connection with the following parameters: | |
e690ca94 | 2824 | |
e690ca94 KS |
2825 | - The client's process name is constructed by concatenating the server |
2826 | process' NAME and a client identification string. | |
2827 | - If the FILTER argument is non-nil, the client process will not get a | |
2828 | separate process buffer; otherwise, the client's process buffer is a newly | |
2829 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2830 | NAME concatenated with the client identification string. |
e690ca94 KS |
2831 | - The connection type and the process filter and sentinel parameters are |
2832 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2833 | - The client process' contact info is set according to the client's | |
2834 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2835 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2836 | |
2837 | Notice that the FILTER and SENTINEL args are never used directly by | |
2838 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2839 | the server process, but via the optional :log function, accepted (and |
2840 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2841 | |
365aee82 KS |
2842 | The original argument list, modified with the actual connection |
2843 | information, is available via the `process-contact' function. | |
365aee82 | 2844 | |
fa9d4315 | 2845 | usage: (make-network-process &rest ARGS) */) |
f66c7cf8 | 2846 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 JB |
2847 | { |
2848 | Lisp_Object proc; | |
e690ca94 KS |
2849 | Lisp_Object contact; |
2850 | struct Lisp_Process *p; | |
70dbdb36 | 2851 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2852 | struct addrinfo ai, *res, *lres; |
e1652a86 | 2853 | struct addrinfo hints; |
8ea90aa3 DN |
2854 | const char *portstring; |
2855 | char portbuf[128]; | |
70dbdb36 | 2856 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2857 | struct _emacs_addrinfo |
2858 | { | |
2859 | int ai_family; | |
2860 | int ai_socktype; | |
2861 | int ai_protocol; | |
2862 | int ai_addrlen; | |
2863 | struct sockaddr *ai_addr; | |
2864 | struct _emacs_addrinfo *ai_next; | |
2865 | } ai, *res, *lres; | |
418b48fd | 2866 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2867 | struct sockaddr_in address_in; |
2868 | #ifdef HAVE_LOCAL_SOCKETS | |
2869 | struct sockaddr_un address_un; | |
2870 | #endif | |
2871 | int port; | |
dd2a17ab KS |
2872 | int ret = 0; |
2873 | int xerrno = 0; | |
418b48fd | 2874 | int s = -1, outch, inch; |
e690ca94 | 2875 | struct gcpro gcpro1; |
d311d28c PE |
2876 | ptrdiff_t count = SPECPDL_INDEX (); |
2877 | ptrdiff_t count1; | |
e690ca94 KS |
2878 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2879 | Lisp_Object tem; | |
2880 | Lisp_Object name, buffer, host, service, address; | |
2881 | Lisp_Object filter, sentinel; | |
2882 | int is_non_blocking_client = 0; | |
6b61353c | 2883 | int is_server = 0, backlog = 5; |
9057ff80 | 2884 | int socktype; |
e690ca94 KS |
2885 | int family = -1; |
2886 | ||
2887 | if (nargs == 0) | |
2888 | return Qnil; | |
dd2a17ab | 2889 | |
e690ca94 KS |
2890 | /* Save arguments for process-contact and clone-process. */ |
2891 | contact = Flist (nargs, args); | |
2892 | GCPRO1 (contact); | |
2893 | ||
bff3ed0a RS |
2894 | #ifdef WINDOWSNT |
2895 | /* Ensure socket support is loaded if available. */ | |
2896 | init_winsock (TRUE); | |
2897 | #endif | |
2898 | ||
9057ff80 KS |
2899 | /* :type TYPE (nil: stream, datagram */ |
2900 | tem = Fplist_get (contact, QCtype); | |
2901 | if (NILP (tem)) | |
2902 | socktype = SOCK_STREAM; | |
2903 | #ifdef DATAGRAM_SOCKETS | |
2904 | else if (EQ (tem, Qdatagram)) | |
2905 | socktype = SOCK_DGRAM; | |
f00c449b SM |
2906 | #endif |
2907 | #ifdef HAVE_SEQPACKET | |
2908 | else if (EQ (tem, Qseqpacket)) | |
2909 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 2910 | #endif |
9057ff80 KS |
2911 | else |
2912 | error ("Unsupported connection type"); | |
e690ca94 KS |
2913 | |
2914 | /* :server BOOL */ | |
2915 | tem = Fplist_get (contact, QCserver); | |
2916 | if (!NILP (tem)) | |
2917 | { | |
75728599 JR |
2918 | /* Don't support network sockets when non-blocking mode is |
2919 | not available, since a blocked Emacs is not useful. */ | |
5e617bc2 | 2920 | #if !defined (O_NONBLOCK) && !defined (O_NDELAY) |
e690ca94 KS |
2921 | error ("Network servers not supported"); |
2922 | #else | |
2923 | is_server = 1; | |
d311d28c | 2924 | if (TYPE_RANGED_INTEGERP (int, tem)) |
6b61353c | 2925 | backlog = XINT (tem); |
e690ca94 KS |
2926 | #endif |
2927 | } | |
2928 | ||
2929 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2930 | QCaddress = is_server ? QClocal : QCremote; | |
2931 | ||
d7e344cd | 2932 | /* :nowait BOOL */ |
84b31826 | 2933 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
2934 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
2935 | { | |
2936 | #ifndef NON_BLOCKING_CONNECT | |
2937 | error ("Non-blocking connect not supported"); | |
2938 | #else | |
2939 | is_non_blocking_client = 1; | |
2940 | #endif | |
2941 | } | |
2942 | ||
2943 | name = Fplist_get (contact, QCname); | |
2944 | buffer = Fplist_get (contact, QCbuffer); | |
2945 | filter = Fplist_get (contact, QCfilter); | |
2946 | sentinel = Fplist_get (contact, QCsentinel); | |
2947 | ||
b7826503 | 2948 | CHECK_STRING (name); |
e690ca94 | 2949 | |
e690ca94 KS |
2950 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
2951 | ai.ai_socktype = socktype; | |
2952 | ai.ai_protocol = 0; | |
2953 | ai.ai_next = NULL; | |
2954 | res = &ai; | |
a319f7c1 | 2955 | |
e690ca94 KS |
2956 | /* :local ADDRESS or :remote ADDRESS */ |
2957 | address = Fplist_get (contact, QCaddress); | |
2958 | if (!NILP (address)) | |
a319f7c1 | 2959 | { |
e690ca94 KS |
2960 | host = service = Qnil; |
2961 | ||
2962 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2963 | error ("Malformed :address"); | |
2964 | ai.ai_family = family; | |
2965 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2966 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2967 | goto open_socket; | |
a319f7c1 | 2968 | } |
e690ca94 KS |
2969 | |
2970 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2971 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 2972 | if (NILP (tem)) |
a319f7c1 | 2973 | { |
5e617bc2 | 2974 | #if defined (HAVE_GETADDRINFO) && defined (AF_INET6) |
e1652a86 KS |
2975 | family = AF_UNSPEC; |
2976 | #else | |
2977 | family = AF_INET; | |
e690ca94 | 2978 | #endif |
a319f7c1 | 2979 | } |
e1652a86 KS |
2980 | #ifdef HAVE_LOCAL_SOCKETS |
2981 | else if (EQ (tem, Qlocal)) | |
2982 | family = AF_LOCAL; | |
2983 | #endif | |
2984 | #ifdef AF_INET6 | |
2985 | else if (EQ (tem, Qipv6)) | |
2986 | family = AF_INET6; | |
2987 | #endif | |
2988 | else if (EQ (tem, Qipv4)) | |
2989 | family = AF_INET; | |
d311d28c | 2990 | else if (TYPE_RANGED_INTEGERP (int, tem)) |
e1652a86 KS |
2991 | family = XINT (tem); |
2992 | else | |
e690ca94 | 2993 | error ("Unknown address family"); |
e1652a86 | 2994 | |
e690ca94 KS |
2995 | ai.ai_family = family; |
2996 | ||
2997 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2998 | service = Fplist_get (contact, QCservice); | |
2999 | ||
66a9f7f4 SM |
3000 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3001 | host = Fplist_get (contact, QChost); | |
3002 | if (!NILP (host)) | |
3003 | { | |
3004 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
3005 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
3006 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
3007 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
3008 | CHECK_STRING (host); |
3009 | } | |
3010 | ||
e690ca94 KS |
3011 | #ifdef HAVE_LOCAL_SOCKETS |
3012 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3013 | { |
66a9f7f4 SM |
3014 | if (!NILP (host)) |
3015 | { | |
3016 | message (":family local ignores the :host \"%s\" property", | |
3017 | SDATA (host)); | |
3018 | contact = Fplist_put (contact, QChost, Qnil); | |
3019 | host = Qnil; | |
3020 | } | |
b7826503 | 3021 | CHECK_STRING (service); |
72af86bd | 3022 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3023 | address_un.sun_family = AF_LOCAL; |
42a5b22f | 3024 | strncpy (address_un.sun_path, SSDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
3025 | ai.ai_addr = (struct sockaddr *) &address_un; |
3026 | ai.ai_addrlen = sizeof address_un; | |
3027 | goto open_socket; | |
d0d6b7c5 | 3028 | } |
e690ca94 | 3029 | #endif |
a319f7c1 | 3030 | |
798b64bb KH |
3031 | /* Slow down polling to every ten seconds. |
3032 | Some kernels have a bug which causes retrying connect to fail | |
3033 | after a connect. Polling can interfere with gethostbyname too. */ | |
3034 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3035 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3036 | { |
3037 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3038 | bind_polling_period (10); | |
3039 | } | |
798b64bb KH |
3040 | #endif |
3041 | ||
a319f7c1 | 3042 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3043 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3044 | Otherwise, use getservbyname to lookup the service. */ | |
3045 | if (!NILP (host)) | |
3046 | { | |
3047 | ||
3048 | /* SERVICE can either be a string or int. | |
3049 | Convert to a C string for later use by getaddrinfo. */ | |
3050 | if (EQ (service, Qt)) | |
3051 | portstring = "0"; | |
3052 | else if (INTEGERP (service)) | |
3053 | { | |
c2982e87 | 3054 | sprintf (portbuf, "%"pI"d", XINT (service)); |
e690ca94 KS |
3055 | portstring = portbuf; |
3056 | } | |
3057 | else | |
3058 | { | |
3059 | CHECK_STRING (service); | |
42a5b22f | 3060 | portstring = SSDATA (service); |
e690ca94 KS |
3061 | } |
3062 | ||
3063 | immediate_quit = 1; | |
3064 | QUIT; | |
3065 | memset (&hints, 0, sizeof (hints)); | |
3066 | hints.ai_flags = 0; | |
e1652a86 | 3067 | hints.ai_family = family; |
e690ca94 KS |
3068 | hints.ai_socktype = socktype; |
3069 | hints.ai_protocol = 0; | |
08116b48 CY |
3070 | |
3071 | #ifdef HAVE_RES_INIT | |
3072 | res_init (); | |
3073 | #endif | |
3074 | ||
42a5b22f | 3075 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3076 | if (ret) |
f6270f62 | 3077 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3078 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3079 | #else |
42a5b22f | 3080 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3081 | #endif |
e690ca94 | 3082 | immediate_quit = 0; |
a319f7c1 | 3083 | |
e690ca94 KS |
3084 | goto open_socket; |
3085 | } | |
3086 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3087 | |
e690ca94 KS |
3088 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3089 | has been specified (e.g. for a local server process). */ | |
3090 | ||
3091 | if (EQ (service, Qt)) | |
3092 | port = 0; | |
3093 | else if (INTEGERP (service)) | |
3094 | port = htons ((unsigned short) XINT (service)); | |
3095 | else | |
616da37c | 3096 | { |
e690ca94 KS |
3097 | struct servent *svc_info; |
3098 | CHECK_STRING (service); | |
42a5b22f | 3099 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3100 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3101 | if (svc_info == 0) | |
d5db4077 | 3102 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3103 | port = svc_info->s_port; |
3104 | } | |
3105 | ||
72af86bd | 3106 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3107 | address_in.sin_family = family; |
3108 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3109 | address_in.sin_port = port; | |
3110 | ||
3111 | #ifndef HAVE_GETADDRINFO | |
3112 | if (!NILP (host)) | |
3113 | { | |
3114 | struct hostent *host_info_ptr; | |
3115 | ||
3116 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 3117 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3118 | immediate_quit = 1; |
3119 | QUIT; | |
08116b48 CY |
3120 | |
3121 | #ifdef HAVE_RES_INIT | |
3122 | res_init (); | |
3123 | #endif | |
3124 | ||
d5db4077 | 3125 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3126 | immediate_quit = 0; |
177c0ea7 | 3127 | |
e690ca94 KS |
3128 | if (host_info_ptr) |
3129 | { | |
72af86bd AS |
3130 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3131 | host_info_ptr->h_length); | |
e690ca94 KS |
3132 | family = host_info_ptr->h_addrtype; |
3133 | address_in.sin_family = family; | |
3134 | } | |
3135 | else | |
3136 | /* Attempt to interpret host as numeric inet address */ | |
3137 | { | |
4624371d | 3138 | unsigned long numeric_addr; |
51b59d79 | 3139 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3140 | if (numeric_addr == -1) |
d5db4077 | 3141 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3142 | |
72af86bd AS |
3143 | memcpy (&address_in.sin_addr, &numeric_addr, |
3144 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3145 | } |
d0d6b7c5 | 3146 | |
e690ca94 | 3147 | } |
dd2a17ab | 3148 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3149 | |
e690ca94 KS |
3150 | ai.ai_family = family; |
3151 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3152 | ai.ai_addrlen = sizeof address_in; | |
3153 | ||
3154 | open_socket: | |
3155 | ||
dd2a17ab | 3156 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3157 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3158 | s = -1; |
457a9bee | 3159 | |
dd2a17ab KS |
3160 | for (lres = res; lres; lres = lres->ai_next) |
3161 | { | |
f66c7cf8 | 3162 | ptrdiff_t optn; |
c5101a77 | 3163 | int optbits; |
6b61353c | 3164 | |
4dc343ee | 3165 | #ifdef WINDOWSNT |
649dbf36 | 3166 | retry_connect: |
4dc343ee | 3167 | #endif |
649dbf36 | 3168 | |
dd2a17ab KS |
3169 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3170 | if (s < 0) | |
3171 | { | |
3172 | xerrno = errno; | |
3173 | continue; | |
3174 | } | |
0f2ee0c1 | 3175 | |
e690ca94 KS |
3176 | #ifdef DATAGRAM_SOCKETS |
3177 | if (!is_server && socktype == SOCK_DGRAM) | |
3178 | break; | |
3179 | #endif /* DATAGRAM_SOCKETS */ | |
3180 | ||
dd2a17ab | 3181 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3182 | if (is_non_blocking_client) |
dd2a17ab KS |
3183 | { |
3184 | #ifdef O_NONBLOCK | |
3185 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3186 | #else | |
3187 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3188 | #endif | |
3189 | if (ret < 0) | |
3190 | { | |
3191 | xerrno = errno; | |
3192 | emacs_close (s); | |
3193 | s = -1; | |
3194 | continue; | |
3195 | } | |
3196 | } | |
3197 | #endif | |
177c0ea7 | 3198 | |
dd2a17ab | 3199 | /* Make us close S if quit. */ |
dd2a17ab KS |
3200 | record_unwind_protect (close_file_unwind, make_number (s)); |
3201 | ||
6b61353c KH |
3202 | /* Parse network options in the arg list. |
3203 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3204 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3205 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3206 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3207 | ||
e690ca94 KS |
3208 | if (is_server) |
3209 | { | |
3210 | /* Configure as a server socket. */ | |
6b61353c KH |
3211 | |
3212 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3213 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3214 | #ifdef HAVE_LOCAL_SOCKETS |
3215 | if (family != AF_LOCAL) | |
3216 | #endif | |
6b61353c KH |
3217 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3218 | { | |
3219 | int optval = 1; | |
3220 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3221 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3222 | } | |
177c0ea7 | 3223 | |
e690ca94 KS |
3224 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3225 | report_file_error ("Cannot bind server socket", Qnil); | |
3226 | ||
3227 | #ifdef HAVE_GETSOCKNAME | |
3228 | if (EQ (service, Qt)) | |
3229 | { | |
3230 | struct sockaddr_in sa1; | |
401bf9b4 | 3231 | socklen_t len1 = sizeof (sa1); |
e690ca94 KS |
3232 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3233 | { | |
3234 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3235 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3236 | contact = Fplist_put (contact, QCservice, service); |
3237 | } | |
3238 | } | |
3239 | #endif | |
3240 | ||
84b31826 | 3241 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3242 | report_file_error ("Cannot listen on server socket", Qnil); |
3243 | ||
3244 | break; | |
3245 | } | |
3246 | ||
dd2a17ab KS |
3247 | immediate_quit = 1; |
3248 | QUIT; | |
3249 | ||
dd2a17ab KS |
3250 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3251 | xerrno = errno; | |
3252 | ||
dd2a17ab KS |
3253 | if (ret == 0 || xerrno == EISCONN) |
3254 | { | |
dd2a17ab KS |
3255 | /* The unwind-protect will be discarded afterwards. |
3256 | Likewise for immediate_quit. */ | |
3257 | break; | |
3258 | } | |
3259 | ||
3260 | #ifdef NON_BLOCKING_CONNECT | |
3261 | #ifdef EINPROGRESS | |
e690ca94 | 3262 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3263 | break; |
3264 | #else | |
3265 | #ifdef EWOULDBLOCK | |
e690ca94 | 3266 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3267 | break; |
3268 | #endif | |
3269 | #endif | |
3270 | #endif | |
649dbf36 CY |
3271 | |
3272 | #ifndef WINDOWSNT | |
cd591dbc HE |
3273 | if (xerrno == EINTR) |
3274 | { | |
3275 | /* Unlike most other syscalls connect() cannot be called | |
3276 | again. (That would return EALREADY.) The proper way to | |
3277 | wait for completion is select(). */ | |
401bf9b4 PE |
3278 | int sc; |
3279 | socklen_t len; | |
cd591dbc HE |
3280 | SELECT_TYPE fdset; |
3281 | retry_select: | |
3282 | FD_ZERO (&fdset); | |
3283 | FD_SET (s, &fdset); | |
3284 | QUIT; | |
3285 | sc = select (s + 1, (SELECT_TYPE *)0, &fdset, (SELECT_TYPE *)0, | |
3286 | (EMACS_TIME *)0); | |
3287 | if (sc == -1) | |
3288 | { | |
649dbf36 | 3289 | if (errno == EINTR) |
cd591dbc | 3290 | goto retry_select; |
649dbf36 | 3291 | else |
cd591dbc HE |
3292 | report_file_error ("select failed", Qnil); |
3293 | } | |
3294 | eassert (sc > 0); | |
649dbf36 CY |
3295 | |
3296 | len = sizeof xerrno; | |
3297 | eassert (FD_ISSET (s, &fdset)); | |
3298 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3299 | report_file_error ("getsockopt failed", Qnil); | |
3300 | if (xerrno) | |
3301 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3302 | else | |
3303 | break; | |
cd591dbc | 3304 | } |
649dbf36 | 3305 | #endif /* !WINDOWSNT */ |
e333e864 | 3306 | |
0f2ee0c1 RS |
3307 | immediate_quit = 0; |
3308 | ||
dd2a17ab | 3309 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3310 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3311 | emacs_close (s); |
dd2a17ab | 3312 | s = -1; |
649dbf36 CY |
3313 | |
3314 | #ifdef WINDOWSNT | |
3315 | if (xerrno == EINTR) | |
3316 | goto retry_connect; | |
3317 | #endif | |
dd2a17ab | 3318 | } |
457a9bee | 3319 | |
e690ca94 KS |
3320 | if (s >= 0) |
3321 | { | |
3322 | #ifdef DATAGRAM_SOCKETS | |
3323 | if (socktype == SOCK_DGRAM) | |
3324 | { | |
3325 | if (datagram_address[s].sa) | |
3326 | abort (); | |
3327 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3328 | datagram_address[s].len = lres->ai_addrlen; | |
3329 | if (is_server) | |
3330 | { | |
3331 | Lisp_Object remote; | |
72af86bd | 3332 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3333 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3334 | { | |
3335 | int rfamily, rlen; | |
3336 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3337 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3338 | conv_lisp_to_sockaddr (rfamily, remote, | |
3339 | datagram_address[s].sa, rlen); | |
3340 | } | |
3341 | } | |
3342 | else | |
72af86bd | 3343 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3344 | } |
3345 | #endif | |
177c0ea7 | 3346 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3347 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3348 | #ifdef HAVE_GETSOCKNAME |
3349 | if (!is_server) | |
3350 | { | |
3351 | struct sockaddr_in sa1; | |
401bf9b4 | 3352 | socklen_t len1 = sizeof (sa1); |
2185db04 KS |
3353 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3354 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3355 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3356 | } |
3357 | #endif | |
e690ca94 KS |
3358 | } |
3359 | ||
54b3b62f YM |
3360 | immediate_quit = 0; |
3361 | ||
dd2a17ab | 3362 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3363 | if (res != &ai) |
54b3b62f YM |
3364 | { |
3365 | BLOCK_INPUT; | |
3366 | freeaddrinfo (res); | |
3367 | UNBLOCK_INPUT; | |
3368 | } | |
dd2a17ab KS |
3369 | #endif |
3370 | ||
e690ca94 KS |
3371 | /* Discard the unwind protect for closing S, if any. */ |
3372 | specpdl_ptr = specpdl + count1; | |
3373 | ||
3374 | /* Unwind bind_polling_period and request_sigio. */ | |
3375 | unbind_to (count, Qnil); | |
3376 | ||
dd2a17ab KS |
3377 | if (s < 0) |
3378 | { | |
dd2a17ab KS |
3379 | /* If non-blocking got this far - and failed - assume non-blocking is |
3380 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3381 | the normal blocking calls to open-network-stream handles this error |
3382 | better. */ | |
3383 | if (is_non_blocking_client) | |
dd2a17ab | 3384 | return Qnil; |
dd2a17ab | 3385 | |
d0d6b7c5 | 3386 | errno = xerrno; |
e690ca94 KS |
3387 | if (is_server) |
3388 | report_file_error ("make server process failed", contact); | |
3389 | else | |
3390 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3391 | } |
44ade2e9 | 3392 | |
d0d6b7c5 | 3393 | inch = s; |
59f23005 | 3394 | outch = s; |
d0d6b7c5 JB |
3395 | |
3396 | if (!NILP (buffer)) | |
3397 | buffer = Fget_buffer_create (buffer); | |
3398 | proc = make_process (name); | |
3399 | ||
3400 | chan_process[inch] = proc; | |
3401 | ||
3402 | #ifdef O_NONBLOCK | |
3403 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3404 | #else | |
3405 | #ifdef O_NDELAY | |
3406 | fcntl (inch, F_SETFL, O_NDELAY); | |
3407 | #endif | |
3408 | #endif | |
3409 | ||
e690ca94 KS |
3410 | p = XPROCESS (proc); |
3411 | ||
3412 | p->childp = contact; | |
faa7db08 | 3413 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
d888760c | 3414 | p->type = Qnetwork; |
177c0ea7 | 3415 | |
e690ca94 KS |
3416 | p->buffer = buffer; |
3417 | p->sentinel = sentinel; | |
3418 | p->filter = filter; | |
3419 | p->log = Fplist_get (contact, QClog); | |
3420 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
60f0fb11 | 3421 | p->kill_without_query = 1; |
e690ca94 KS |
3422 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
3423 | p->command = Qt; | |
6bfd98e7 | 3424 | p->pid = 0; |
60f0fb11 SM |
3425 | p->infd = inch; |
3426 | p->outfd = outch; | |
84b31826 | 3427 | if (is_server && socktype != SOCK_DGRAM) |
e690ca94 | 3428 | p->status = Qlisten; |
dd2a17ab | 3429 | |
f523e0c3 SM |
3430 | /* Make the process marker point into the process buffer (if any). */ |
3431 | if (BUFFERP (buffer)) | |
3432 | set_marker_both (p->mark, buffer, | |
3433 | BUF_ZV (XBUFFER (buffer)), | |
3434 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3435 | ||
dd2a17ab | 3436 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3437 | if (is_non_blocking_client) |
dd2a17ab KS |
3438 | { |
3439 | /* We may get here if connect did succeed immediately. However, | |
3440 | in that case, we still need to signal this like a non-blocking | |
3441 | connection. */ | |
e690ca94 | 3442 | p->status = Qconnect; |
dd2a17ab KS |
3443 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3444 | { | |
3445 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3446 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3447 | num_pending_connects++; |
3448 | } | |
3449 | } | |
3450 | else | |
3451 | #endif | |
e690ca94 KS |
3452 | /* A server may have a client filter setting of Qt, but it must |
3453 | still listen for incoming connects unless it is stopped. */ | |
3454 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3455 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3456 | { |
3457 | FD_SET (inch, &input_wait_mask); | |
3458 | FD_SET (inch, &non_keyboard_wait_mask); | |
3459 | } | |
3460 | ||
7d0e672e RS |
3461 | if (inch > max_process_desc) |
3462 | max_process_desc = inch; | |
d0d6b7c5 | 3463 | |
e690ca94 KS |
3464 | tem = Fplist_member (contact, QCcoding); |
3465 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3466 | tem = Qnil; /* No error message (too late!). */ | |
3467 | ||
67918941 RS |
3468 | { |
3469 | /* Setup coding systems for communicating with the network stream. */ | |
b93aacde | 3470 | struct gcpro inner_gcpro1; |
67918941 RS |
3471 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
3472 | Lisp_Object coding_systems = Qt; | |
b93aacde | 3473 | Lisp_Object fargs[5], val; |
67918941 | 3474 | |
e690ca94 | 3475 | if (!NILP (tem)) |
6b61353c KH |
3476 | { |
3477 | val = XCAR (XCDR (tem)); | |
3478 | if (CONSP (val)) | |
3479 | val = XCAR (val); | |
3480 | } | |
e690ca94 | 3481 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3482 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3483 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3484 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3485 | /* We dare not decode end-of-line format by setting VAL to |
3486 | Qraw_text, because the existing Emacs Lisp libraries | |
3487 | assume that they receive bare code including a sequene of | |
3488 | CR LF. */ | |
3489 | val = Qnil; | |
3490 | else | |
3491 | { | |
991234f0 KS |
3492 | if (NILP (host) || NILP (service)) |
3493 | coding_systems = Qnil; | |
3494 | else | |
3495 | { | |
b93aacde PE |
3496 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3497 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
3498 | GCPRO1_VAR (proc, inner_gcpro); | |
3499 | coding_systems = Ffind_operation_coding_system (5, fargs); | |
3500 | UNGCPRO_VAR (inner_gcpro); | |
991234f0 | 3501 | } |
67918941 | 3502 | if (CONSP (coding_systems)) |
70949dac | 3503 | val = XCAR (coding_systems); |
67918941 | 3504 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3505 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3506 | else |
3507 | val = Qnil; | |
3508 | } | |
e690ca94 | 3509 | p->decode_coding_system = val; |
0fa1789e | 3510 | |
e690ca94 | 3511 | if (!NILP (tem)) |
6b61353c KH |
3512 | { |
3513 | val = XCAR (XCDR (tem)); | |
3514 | if (CONSP (val)) | |
3515 | val = XCDR (val); | |
3516 | } | |
e690ca94 | 3517 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3518 | val = Vcoding_system_for_write; |
4b4deea2 | 3519 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3520 | val = Qnil; |
3521 | else | |
3522 | { | |
3523 | if (EQ (coding_systems, Qt)) | |
3524 | { | |
991234f0 KS |
3525 | if (NILP (host) || NILP (service)) |
3526 | coding_systems = Qnil; | |
3527 | else | |
3528 | { | |
b93aacde PE |
3529 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3530 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
3531 | GCPRO1_VAR (proc, inner_gcpro); | |
3532 | coding_systems = Ffind_operation_coding_system (5, fargs); | |
3533 | UNGCPRO_VAR (inner_gcpro); | |
991234f0 | 3534 | } |
67918941 RS |
3535 | } |
3536 | if (CONSP (coding_systems)) | |
70949dac | 3537 | val = XCDR (coding_systems); |
67918941 | 3538 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3539 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3540 | else |
3541 | val = Qnil; | |
3542 | } | |
e690ca94 | 3543 | p->encode_coding_system = val; |
67918941 | 3544 | } |
03f04413 | 3545 | setup_process_coding_systems (proc); |
0fa1789e | 3546 | |
cbe81f1d | 3547 | p->decoding_buf = empty_unibyte_string; |
60f0fb11 | 3548 | p->decoding_carryover = 0; |
cbe81f1d | 3549 | p->encoding_buf = empty_unibyte_string; |
0fa1789e | 3550 | |
e690ca94 | 3551 | p->inherit_coding_system_flag |
e6fca843 | 3552 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3553 | |
d0d6b7c5 JB |
3554 | UNGCPRO; |
3555 | return proc; | |
3556 | } | |
d0d6b7c5 | 3557 | |
6b61353c | 3558 | \f |
5e617bc2 | 3559 | #if defined (HAVE_NET_IF_H) |
6b61353c KH |
3560 | |
3561 | #ifdef SIOCGIFCONF | |
3562 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3563 | doc: /* Return an alist of all network interfaces and their network address. | |
3564 | Each element is a cons, the car of which is a string containing the | |
3565 | interface name, and the cdr is the network address in internal | |
3566 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3567 | (void) |
6b61353c KH |
3568 | { |
3569 | struct ifconf ifconf; | |
377538cb JD |
3570 | struct ifreq *ifreq; |
3571 | void *buf = NULL; | |
70c60eb2 PE |
3572 | ptrdiff_t buf_size = 512; |
3573 | int s, i; | |
6b61353c KH |
3574 | Lisp_Object res; |
3575 | ||
3576 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3577 | if (s < 0) | |
3578 | return Qnil; | |
3579 | ||
76667214 | 3580 | do |
6b61353c | 3581 | { |
76667214 PE |
3582 | buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1); |
3583 | ifconf.ifc_buf = buf; | |
3584 | ifconf.ifc_len = buf_size; | |
156bffbe AS |
3585 | if (ioctl (s, SIOCGIFCONF, &ifconf)) |
3586 | { | |
3587 | close (s); | |
76667214 | 3588 | xfree (buf); |
156bffbe AS |
3589 | return Qnil; |
3590 | } | |
6b61353c | 3591 | } |
76667214 | 3592 | while (ifconf.ifc_len == buf_size); |
6b61353c KH |
3593 | |
3594 | close (s); | |
6b61353c KH |
3595 | |
3596 | res = Qnil; | |
156bffbe AS |
3597 | ifreq = ifconf.ifc_req; |
3598 | while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len) | |
6b61353c | 3599 | { |
377538cb JD |
3600 | struct ifreq *ifq = ifreq; |
3601 | #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN | |
156bffbe AS |
3602 | #define SIZEOF_IFREQ(sif) \ |
3603 | ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \ | |
3604 | ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len) | |
377538cb JD |
3605 | |
3606 | int len = SIZEOF_IFREQ (ifq); | |
3607 | #else | |
3608 | int len = sizeof (*ifreq); | |
3609 | #endif | |
6b61353c | 3610 | char namebuf[sizeof (ifq->ifr_name) + 1]; |
377538cb | 3611 | i += len; |
156bffbe | 3612 | ifreq = (struct ifreq *) ((char *) ifreq + len); |
377538cb | 3613 | |
6b61353c KH |
3614 | if (ifq->ifr_addr.sa_family != AF_INET) |
3615 | continue; | |
377538cb | 3616 | |
72af86bd | 3617 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3618 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3619 | res = Fcons (Fcons (build_string (namebuf), | |
3620 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3621 | sizeof (struct sockaddr))), | |
3622 | res); | |
3623 | } | |
3624 | ||
377538cb | 3625 | xfree (buf); |
6b61353c KH |
3626 | return res; |
3627 | } | |
3628 | #endif /* SIOCGIFCONF */ | |
3629 | ||
5e617bc2 | 3630 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
6b61353c KH |
3631 | |
3632 | struct ifflag_def { | |
3633 | int flag_bit; | |
91433552 | 3634 | const char *flag_sym; |
6b61353c KH |
3635 | }; |
3636 | ||
91433552 | 3637 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3638 | #ifdef IFF_UP |
3639 | { IFF_UP, "up" }, | |
3640 | #endif | |
3641 | #ifdef IFF_BROADCAST | |
3642 | { IFF_BROADCAST, "broadcast" }, | |
3643 | #endif | |
3644 | #ifdef IFF_DEBUG | |
3645 | { IFF_DEBUG, "debug" }, | |
3646 | #endif | |
3647 | #ifdef IFF_LOOPBACK | |
3648 | { IFF_LOOPBACK, "loopback" }, | |
3649 | #endif | |
3650 | #ifdef IFF_POINTOPOINT | |
3651 | { IFF_POINTOPOINT, "pointopoint" }, | |
3652 | #endif | |
3653 | #ifdef IFF_RUNNING | |
3654 | { IFF_RUNNING, "running" }, | |
3655 | #endif | |
3656 | #ifdef IFF_NOARP | |
3657 | { IFF_NOARP, "noarp" }, | |
3658 | #endif | |
3659 | #ifdef IFF_PROMISC | |
3660 | { IFF_PROMISC, "promisc" }, | |
3661 | #endif | |
3662 | #ifdef IFF_NOTRAILERS | |
377538cb JD |
3663 | #ifdef NS_IMPL_COCOA |
3664 | /* Really means smart, notrailers is obsolete */ | |
3665 | { IFF_NOTRAILERS, "smart" }, | |
3666 | #else | |
6b61353c KH |
3667 | { IFF_NOTRAILERS, "notrailers" }, |
3668 | #endif | |
377538cb | 3669 | #endif |
6b61353c KH |
3670 | #ifdef IFF_ALLMULTI |
3671 | { IFF_ALLMULTI, "allmulti" }, | |
3672 | #endif | |
3673 | #ifdef IFF_MASTER | |
3674 | { IFF_MASTER, "master" }, | |
3675 | #endif | |
3676 | #ifdef IFF_SLAVE | |
3677 | { IFF_SLAVE, "slave" }, | |
3678 | #endif | |
3679 | #ifdef IFF_MULTICAST | |
3680 | { IFF_MULTICAST, "multicast" }, | |
3681 | #endif | |
3682 | #ifdef IFF_PORTSEL | |
3683 | { IFF_PORTSEL, "portsel" }, | |
3684 | #endif | |
3685 | #ifdef IFF_AUTOMEDIA | |
3686 | { IFF_AUTOMEDIA, "automedia" }, | |
3687 | #endif | |
3688 | #ifdef IFF_DYNAMIC | |
3689 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3690 | #endif |
2026418c YM |
3691 | #ifdef IFF_OACTIVE |
3692 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3693 | #endif |
3694 | #ifdef IFF_SIMPLEX | |
3695 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3696 | #endif | |
3697 | #ifdef IFF_LINK0 | |
3698 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3699 | #endif | |
3700 | #ifdef IFF_LINK1 | |
3701 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3702 | #endif | |
3703 | #ifdef IFF_LINK2 | |
3704 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3705 | #endif |
3706 | { 0, 0 } | |
3707 | }; | |
3708 | ||
3709 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3710 | doc: /* Return information about network interface named IFNAME. | |
3711 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3712 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3713 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3714 | FLAGS is the current flags of the interface. */) | |
5842a27b | 3715 | (Lisp_Object ifname) |
6b61353c KH |
3716 | { |
3717 | struct ifreq rq; | |
3718 | Lisp_Object res = Qnil; | |
3719 | Lisp_Object elt; | |
3720 | int s; | |
3721 | int any = 0; | |
0a0d27fb PE |
3722 | #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \ |
3723 | && defined HAVE_GETIFADDRS && defined LLADDR) | |
377538cb JD |
3724 | struct ifaddrs *ifap; |
3725 | #endif | |
6b61353c KH |
3726 | |
3727 | CHECK_STRING (ifname); | |
3728 | ||
72af86bd | 3729 | memset (rq.ifr_name, 0, sizeof rq.ifr_name); |
0da49335 | 3730 | strncpy (rq.ifr_name, SSDATA (ifname), sizeof (rq.ifr_name)); |
6b61353c KH |
3731 | |
3732 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3733 | if (s < 0) | |
3734 | return Qnil; | |
3735 | ||
3736 | elt = Qnil; | |
5e617bc2 | 3737 | #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS) |
6b61353c KH |
3738 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3739 | { | |
3740 | int flags = rq.ifr_flags; | |
91433552 | 3741 | const struct ifflag_def *fp; |
6b61353c KH |
3742 | int fnum; |
3743 | ||
377538cb JD |
3744 | /* If flags is smaller than int (i.e. short) it may have the high bit set |
3745 | due to IFF_MULTICAST. In that case, sign extending it into | |
3746 | an int is wrong. */ | |
3747 | if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags)) | |
3748 | flags = (unsigned short) rq.ifr_flags; | |
3749 | ||
bc57d757 | 3750 | any = 1; |
82a80058 | 3751 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3752 | { |
3753 | if (flags & fp->flag_bit) | |
3754 | { | |
3755 | elt = Fcons (intern (fp->flag_sym), elt); | |
3756 | flags -= fp->flag_bit; | |
3757 | } | |
3758 | } | |
fa3c87e1 | 3759 | for (fnum = 0; flags && fnum < 32; flags >>= 1, fnum++) |
6b61353c | 3760 | { |
fa3c87e1 | 3761 | if (flags & 1) |
6b61353c KH |
3762 | { |
3763 | elt = Fcons (make_number (fnum), elt); | |
3764 | } | |
3765 | } | |
3766 | } | |
3767 | #endif | |
3768 | res = Fcons (elt, res); | |
3769 | ||
3770 | elt = Qnil; | |
5e617bc2 | 3771 | #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR) |
6b61353c KH |
3772 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3773 | { | |
3774 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3775 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3776 | int n; | |
3777 | ||
bc57d757 | 3778 | any = 1; |
6b61353c KH |
3779 | for (n = 0; n < 6; n++) |
3780 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3781 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3782 | } | |
5e617bc2 | 3783 | #elif defined (HAVE_GETIFADDRS) && defined (LLADDR) |
377538cb JD |
3784 | if (getifaddrs (&ifap) != -1) |
3785 | { | |
3786 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3787 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3788 | struct ifaddrs *it; | |
3789 | ||
3790 | for (it = ifap; it != NULL; it = it->ifa_next) | |
3791 | { | |
3792 | struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr; | |
3793 | unsigned char linkaddr[6]; | |
3794 | int n; | |
3795 | ||
3796 | if (it->ifa_addr->sa_family != AF_LINK | |
3797 | || strcmp (it->ifa_name, SSDATA (ifname)) != 0 | |
3798 | || sdl->sdl_alen != 6) | |
3799 | continue; | |
3800 | ||
5e617bc2 | 3801 | memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen); |
377538cb JD |
3802 | for (n = 0; n < 6; n++) |
3803 | p->contents[n] = make_number (linkaddr[n]); | |
3804 | ||
3805 | elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr); | |
3806 | break; | |
3807 | } | |
3808 | } | |
3809 | #ifdef HAVE_FREEIFADDRS | |
3810 | freeifaddrs (ifap); | |
6b61353c | 3811 | #endif |
377538cb JD |
3812 | |
3813 | #endif /* HAVE_GETIFADDRS && LLADDR */ | |
3814 | ||
6b61353c KH |
3815 | res = Fcons (elt, res); |
3816 | ||
3817 | elt = Qnil; | |
5e617bc2 | 3818 | #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3819 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3820 | { | |
bc57d757 | 3821 | any = 1; |
2026418c | 3822 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3823 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3824 | #else |
3825 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3826 | #endif | |
6b61353c KH |
3827 | } |
3828 | #endif | |
3829 | res = Fcons (elt, res); | |
3830 | ||
3831 | elt = Qnil; | |
5e617bc2 | 3832 | #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
6b61353c KH |
3833 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3834 | { | |
bc57d757 | 3835 | any = 1; |
6b61353c KH |
3836 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); |
3837 | } | |
3838 | #endif | |
3839 | res = Fcons (elt, res); | |
3840 | ||
3841 | elt = Qnil; | |
5e617bc2 | 3842 | #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR) |
6b61353c KH |
3843 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3844 | { | |
bc57d757 | 3845 | any = 1; |
6b61353c KH |
3846 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); |
3847 | } | |
3848 | #endif | |
3849 | res = Fcons (elt, res); | |
3850 | ||
3851 | close (s); | |
3852 | ||
3853 | return any ? res : Qnil; | |
3854 | } | |
3855 | #endif | |
5e617bc2 | 3856 | #endif /* defined (HAVE_NET_IF_H) */ |
6b61353c | 3857 | |
04391069 RS |
3858 | /* Turn off input and output for process PROC. */ |
3859 | ||
40ccffa6 | 3860 | static void |
d3da34e0 | 3861 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3862 | { |
3863 | register int inchannel, outchannel; | |
3864 | register struct Lisp_Process *p = XPROCESS (proc); | |
3865 | ||
60f0fb11 SM |
3866 | inchannel = p->infd; |
3867 | outchannel = p->outfd; | |
d0d6b7c5 | 3868 | |
6b61353c | 3869 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3870 | if (p->read_output_delay > 0) |
6b61353c KH |
3871 | { |
3872 | if (--process_output_delay_count < 0) | |
3873 | process_output_delay_count = 0; | |
60f0fb11 SM |
3874 | p->read_output_delay = 0; |
3875 | p->read_output_skip = 0; | |
6b61353c KH |
3876 | } |
3877 | #endif | |
f3d9532b | 3878 | |
a9f2c884 | 3879 | if (inchannel >= 0) |
d0d6b7c5 JB |
3880 | { |
3881 | /* Beware SIGCHLD hereabouts. */ | |
3882 | flush_pending_output (inchannel); | |
68c45bf0 | 3883 | emacs_close (inchannel); |
a9f2c884 | 3884 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3885 | emacs_close (outchannel); |
d0d6b7c5 | 3886 | |
60f0fb11 SM |
3887 | p->infd = -1; |
3888 | p->outfd = -1; | |
e690ca94 KS |
3889 | #ifdef DATAGRAM_SOCKETS |
3890 | if (DATAGRAM_CHAN_P (inchannel)) | |
3891 | { | |
3892 | xfree (datagram_address[inchannel].sa); | |
3893 | datagram_address[inchannel].sa = 0; | |
3894 | datagram_address[inchannel].len = 0; | |
3895 | } | |
3896 | #endif | |
d0d6b7c5 JB |
3897 | chan_process[inchannel] = Qnil; |
3898 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3899 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3900 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3901 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3902 | { | |
3903 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 3904 | FD_CLR (inchannel, &write_mask); |
dd2a17ab KS |
3905 | if (--num_pending_connects < 0) |
3906 | abort (); | |
3907 | } | |
bad49fc7 | 3908 | #endif |
7d0e672e RS |
3909 | if (inchannel == max_process_desc) |
3910 | { | |
3911 | int i; | |
3912 | /* We just closed the highest-numbered process input descriptor, | |
3913 | so recompute the highest-numbered one now. */ | |
3914 | max_process_desc = 0; | |
3915 | for (i = 0; i < MAXDESC; i++) | |
3916 | if (!NILP (chan_process[i])) | |
3917 | max_process_desc = i; | |
3918 | } | |
d0d6b7c5 JB |
3919 | } |
3920 | } | |
3921 | ||
d0d6b7c5 JB |
3922 | \f |
3923 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3924 | 0, 4, 0, |
fdb82f93 PJ |
3925 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3926 | It is read into the process' buffers or given to their filter functions. | |
3927 | Non-nil arg PROCESS means do not return until some output has been received | |
3928 | from PROCESS. | |
5088da42 | 3929 | |
2a7bb882 MR |
3930 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
3931 | and milliseconds to wait; return after that much time whether or not | |
3932 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 3933 | it specifies a fractional number of seconds to wait. |
891bd142 | 3934 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 3935 | |
107ed38d KS |
3936 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3937 | from PROCESS, suspending reading output from other processes. | |
3938 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 3939 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 3940 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 3941 | { |
d311d28c | 3942 | int secs = -1, usecs = 0; |
d0d6b7c5 | 3943 | |
0748d150 | 3944 | if (! NILP (process)) |
b7826503 | 3945 | CHECK_PROCESS (process); |
107ed38d KS |
3946 | else |
3947 | just_this_one = Qnil; | |
0748d150 | 3948 | |
891bd142 SM |
3949 | if (!NILP (millisec)) |
3950 | { /* Obsolete calling convention using integers rather than floats. */ | |
3951 | CHECK_NUMBER (millisec); | |
3952 | if (NILP (seconds)) | |
3953 | seconds = make_float (XINT (millisec) / 1000.0); | |
3954 | else | |
3955 | { | |
3956 | CHECK_NUMBER (seconds); | |
3957 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
3958 | } | |
3959 | } | |
3960 | ||
5088da42 | 3961 | if (!NILP (seconds)) |
d0d6b7c5 | 3962 | { |
c5c18a57 | 3963 | double duration = extract_float (seconds); |
d311d28c PE |
3964 | if (0 < duration) |
3965 | duration_to_sec_usec (duration, &secs, &usecs); | |
d0d6b7c5 | 3966 | } |
d311d28c PE |
3967 | else if (!NILP (process)) |
3968 | secs = 0; | |
d0d6b7c5 JB |
3969 | |
3970 | return | |
5088da42 | 3971 | (wait_reading_process_output (secs, usecs, 0, 0, |
214d6069 KS |
3972 | Qnil, |
3973 | !NILP (process) ? XPROCESS (process) : NULL, | |
3974 | NILP (just_this_one) ? 0 : | |
3975 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3976 | ? Qt : Qnil); |
3977 | } | |
3978 | ||
e690ca94 KS |
3979 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3980 | ||
3981 | static int connect_counter = 0; | |
3982 | ||
3983 | static void | |
d3da34e0 | 3984 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
3985 | { |
3986 | Lisp_Object proc, caller, name, buffer; | |
3987 | Lisp_Object contact, host, service; | |
3988 | struct Lisp_Process *ps= XPROCESS (server); | |
3989 | struct Lisp_Process *p; | |
3990 | int s; | |
3991 | union u_sockaddr { | |
3992 | struct sockaddr sa; | |
3993 | struct sockaddr_in in; | |
e1652a86 KS |
3994 | #ifdef AF_INET6 |
3995 | struct sockaddr_in6 in6; | |
3996 | #endif | |
e690ca94 KS |
3997 | #ifdef HAVE_LOCAL_SOCKETS |
3998 | struct sockaddr_un un; | |
3999 | #endif | |
4000 | } saddr; | |
401bf9b4 | 4001 | socklen_t len = sizeof saddr; |
e690ca94 KS |
4002 | |
4003 | s = accept (channel, &saddr.sa, &len); | |
4004 | ||
4005 | if (s < 0) | |
4006 | { | |
4007 | int code = errno; | |
4008 | ||
4009 | if (code == EAGAIN) | |
4010 | return; | |
4011 | #ifdef EWOULDBLOCK | |
4012 | if (code == EWOULDBLOCK) | |
4013 | return; | |
4014 | #endif | |
4015 | ||
4016 | if (!NILP (ps->log)) | |
4017 | call3 (ps->log, server, Qnil, | |
4018 | concat3 (build_string ("accept failed with code"), | |
4019 | Fnumber_to_string (make_number (code)), | |
4020 | build_string ("\n"))); | |
4021 | return; | |
4022 | } | |
4023 | ||
4024 | connect_counter++; | |
4025 | ||
4026 | /* Setup a new process to handle the connection. */ | |
4027 | ||
4028 | /* Generate a unique identification of the caller, and build contact | |
4029 | information for this process. */ | |
4030 | host = Qt; | |
4031 | service = Qnil; | |
4032 | switch (saddr.sa.sa_family) | |
4033 | { | |
4034 | case AF_INET: | |
4035 | { | |
4036 | Lisp_Object args[5]; | |
4037 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4038 | args[0] = build_string ("%d.%d.%d.%d"); | |
4039 | args[1] = make_number (*ip++); | |
4040 | args[2] = make_number (*ip++); | |
4041 | args[3] = make_number (*ip++); | |
4042 | args[4] = make_number (*ip++); | |
4043 | host = Fformat (5, args); | |
4044 | service = make_number (ntohs (saddr.in.sin_port)); | |
4045 | ||
4046 | args[0] = build_string (" <%s:%d>"); | |
4047 | args[1] = host; | |
4048 | args[2] = service; | |
4049 | caller = Fformat (3, args); | |
4050 | } | |
4051 | break; | |
4052 | ||
e1652a86 KS |
4053 | #ifdef AF_INET6 |
4054 | case AF_INET6: | |
4055 | { | |
4056 | Lisp_Object args[9]; | |
4057 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4058 | int i; | |
4059 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4060 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4061 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4062 | host = Fformat (9, args); |
4063 | service = make_number (ntohs (saddr.in.sin_port)); | |
4064 | ||
4065 | args[0] = build_string (" <[%s]:%d>"); | |
4066 | args[1] = host; | |
4067 | args[2] = service; | |
4068 | caller = Fformat (3, args); | |
4069 | } | |
4070 | break; | |
4071 | #endif | |
4072 | ||
e690ca94 KS |
4073 | #ifdef HAVE_LOCAL_SOCKETS |
4074 | case AF_LOCAL: | |
4075 | #endif | |
4076 | default: | |
4077 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4078 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4079 | break; |
4080 | } | |
4081 | ||
4082 | /* Create a new buffer name for this process if it doesn't have a | |
4083 | filter. The new buffer name is based on the buffer name or | |
4084 | process name of the server process concatenated with the caller | |
4085 | identification. */ | |
4086 | ||
4087 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4088 | buffer = Qnil; | |
4089 | else | |
4090 | { | |
4091 | buffer = ps->buffer; | |
4092 | if (!NILP (buffer)) | |
4093 | buffer = Fbuffer_name (buffer); | |
4094 | else | |
4095 | buffer = ps->name; | |
4096 | if (!NILP (buffer)) | |
4097 | { | |
4098 | buffer = concat2 (buffer, caller); | |
4099 | buffer = Fget_buffer_create (buffer); | |
4100 | } | |
4101 | } | |
4102 | ||
4103 | /* Generate a unique name for the new server process. Combine the | |
4104 | server process name with the caller identification. */ | |
4105 | ||
4106 | name = concat2 (ps->name, caller); | |
4107 | proc = make_process (name); | |
4108 | ||
4109 | chan_process[s] = proc; | |
4110 | ||
4111 | #ifdef O_NONBLOCK | |
4112 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4113 | #else | |
4114 | #ifdef O_NDELAY | |
4115 | fcntl (s, F_SETFL, O_NDELAY); | |
4116 | #endif | |
4117 | #endif | |
4118 | ||
4119 | p = XPROCESS (proc); | |
4120 | ||
4121 | /* Build new contact information for this setup. */ | |
4122 | contact = Fcopy_sequence (ps->childp); | |
4123 | contact = Fplist_put (contact, QCserver, Qnil); | |
4124 | contact = Fplist_put (contact, QChost, host); | |
4125 | if (!NILP (service)) | |
4126 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4127 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4128 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4129 | #ifdef HAVE_GETSOCKNAME | |
4130 | len = sizeof saddr; | |
2185db04 | 4131 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4132 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4133 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4134 | #endif | |
4135 | ||
4136 | p->childp = contact; | |
faa7db08 | 4137 | p->plist = Fcopy_sequence (ps->plist); |
d888760c | 4138 | p->type = Qnetwork; |
ac4a7584 | 4139 | |
e690ca94 KS |
4140 | p->buffer = buffer; |
4141 | p->sentinel = ps->sentinel; | |
4142 | p->filter = ps->filter; | |
4143 | p->command = Qnil; | |
6bfd98e7 | 4144 | p->pid = 0; |
60f0fb11 SM |
4145 | p->infd = s; |
4146 | p->outfd = s; | |
e690ca94 KS |
4147 | p->status = Qrun; |
4148 | ||
4149 | /* Client processes for accepted connections are not stopped initially. */ | |
4150 | if (!EQ (p->filter, Qt)) | |
4151 | { | |
4152 | FD_SET (s, &input_wait_mask); | |
4153 | FD_SET (s, &non_keyboard_wait_mask); | |
4154 | } | |
4155 | ||
4156 | if (s > max_process_desc) | |
4157 | max_process_desc = s; | |
4158 | ||
177c0ea7 | 4159 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4160 | This seems to be the proper thing to do, as the coding system |
4161 | of the new process should reflect the settings at the time the | |
4162 | server socket was opened; not the current settings. */ | |
4163 | ||
4164 | p->decode_coding_system = ps->decode_coding_system; | |
4165 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4166 | setup_process_coding_systems (proc); |
e690ca94 | 4167 | |
cbe81f1d | 4168 | p->decoding_buf = empty_unibyte_string; |
60f0fb11 | 4169 | p->decoding_carryover = 0; |
cbe81f1d | 4170 | p->encoding_buf = empty_unibyte_string; |
e690ca94 KS |
4171 | |
4172 | p->inherit_coding_system_flag | |
60f0fb11 | 4173 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 KS |
4174 | |
4175 | if (!NILP (ps->log)) | |
4176 | call3 (ps->log, server, proc, | |
4177 | concat3 (build_string ("accept from "), | |
4178 | (STRINGP (host) ? host : build_string ("-")), | |
4179 | build_string ("\n"))); | |
4180 | ||
bed9664a | 4181 | if (!NILP (p->sentinel)) |
177c0ea7 | 4182 | exec_sentinel (proc, |
e690ca94 KS |
4183 | concat3 (build_string ("open from "), |
4184 | (STRINGP (host) ? host : build_string ("-")), | |
4185 | build_string ("\n"))); | |
4186 | } | |
4187 | ||
d0d6b7c5 JB |
4188 | /* This variable is different from waiting_for_input in keyboard.c. |
4189 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4190 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4191 | for user-input when that process-filter was called. |
4192 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4193 | lisp code is being evalled. |
4194 | This is also used in record_asynch_buffer_change. | |
4195 | For that purpose, this must be 0 | |
214d6069 | 4196 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4197 | static int waiting_for_user_input_p; |
4198 | ||
2beb96f9 | 4199 | static Lisp_Object |
d3da34e0 | 4200 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4201 | { |
4202 | waiting_for_user_input_p = XINT (data); | |
4203 | return Qnil; | |
4204 | } | |
4205 | ||
c573ae8e | 4206 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4207 | static void |
d3da34e0 | 4208 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4209 | { |
4210 | } | |
4211 | ||
e1e541bd | 4212 | /* Use a wrapper around select to work around a bug in gdb 5.3. |
96c834b6 | 4213 | Normally, the wrapper is optimized away by inlining. |
e1e541bd KS |
4214 | |
4215 | If emacs is stopped inside select, the gdb backtrace doesn't | |
4216 | show the function which called select, so it is practically | |
4217 | impossible to step through wait_reading_process_output. */ | |
4218 | ||
4219 | #ifndef select | |
55d4c1b2 | 4220 | static inline int |
d3da34e0 | 4221 | select_wrapper (int n, fd_set *rfd, fd_set *wfd, fd_set *xfd, struct timeval *tmo) |
e1e541bd KS |
4222 | { |
4223 | return select (n, rfd, wfd, xfd, tmo); | |
4224 | } | |
4225 | #define select select_wrapper | |
4226 | #endif | |
4227 | ||
d0d6b7c5 JB |
4228 | /* Read and dispose of subprocess output while waiting for timeout to |
4229 | elapse and/or keyboard input to be available. | |
4230 | ||
de6fd4b9 | 4231 | TIME_LIMIT is: |
d0d6b7c5 JB |
4232 | timeout in seconds, or |
4233 | zero for no limit, or | |
4234 | -1 means gobble data immediately available but don't wait for any. | |
4235 | ||
de6fd4b9 RS |
4236 | MICROSECS is: |
4237 | an additional duration to wait, measured in microseconds. | |
4238 | If this is nonzero and time_limit is 0, then the timeout | |
4239 | consists of MICROSECS only. | |
6e4f3667 | 4240 | |
de6fd4b9 | 4241 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4242 | 0 to ignore keyboard input, or |
4243 | 1 to return when input is available, or | |
84aa3ace | 4244 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4245 | the quit handler, or |
d0d6b7c5 | 4246 | |
de6fd4b9 | 4247 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4248 | output that arrives. |
d0d6b7c5 | 4249 | |
b89a415a KS |
4250 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4251 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4252 | |
b89a415a | 4253 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4254 | process. The return value is true if we read some input from |
b89a415a KS |
4255 | that process. |
4256 | ||
4257 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4258 | (suspending output from other processes). A negative value | |
4259 | means don't run any timers either. | |
4260 | ||
e0f24100 | 4261 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4262 | received input from that process before the timeout elapsed. |
e0f24100 | 4263 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4264 | |
dfcf069d | 4265 | int |
d5a3eaaf AS |
4266 | wait_reading_process_output (int time_limit, int microsecs, int read_kbd, |
4267 | int do_display, | |
4268 | Lisp_Object wait_for_cell, | |
4269 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4270 | { |
41d03b9a | 4271 | register int channel, nfds; |
855448dc | 4272 | SELECT_TYPE Available; |
3fad2ad2 J |
4273 | SELECT_TYPE Writeok; |
4274 | int check_write; | |
bad49fc7 | 4275 | int check_delay, no_avail; |
d0d6b7c5 JB |
4276 | int xerrno; |
4277 | Lisp_Object proc; | |
41d03b9a | 4278 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4279 | int wait_channel = -1; |
d0d6b7c5 | 4280 | int got_some_input = 0; |
d311d28c | 4281 | ptrdiff_t count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4282 | |
4283 | FD_ZERO (&Available); | |
3fad2ad2 | 4284 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4285 | |
283357a7 | 4286 | if (time_limit == 0 && microsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
2b0a91e7 SM |
4287 | && !(CONSP (wait_proc->status) && EQ (XCAR (wait_proc->status), Qexit))) |
4288 | message ("Blocking call to accept-process-output with quit inhibited!!"); | |
4289 | ||
b89a415a KS |
4290 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4291 | if (wait_proc != NULL) | |
60f0fb11 | 4292 | wait_channel = wait_proc->infd; |
84aa3ace | 4293 | |
2beb96f9 KS |
4294 | record_unwind_protect (wait_reading_process_output_unwind, |
4295 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4296 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4297 | |
4298 | /* Since we may need to wait several times, | |
4299 | compute the absolute time to return at. */ | |
4300 | if (time_limit || microsecs) | |
4301 | { | |
4302 | EMACS_GET_TIME (end_time); | |
4303 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4304 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4305 | } | |
4306 | ||
d0d6b7c5 JB |
4307 | while (1) |
4308 | { | |
c0239a0b RS |
4309 | int timeout_reduced_for_timers = 0; |
4310 | ||
d0d6b7c5 JB |
4311 | /* If calling from keyboard input, do not quit |
4312 | since we want to return C-g as an input character. | |
4313 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4314 | if (read_kbd >= 0) |
d0d6b7c5 | 4315 | QUIT; |
6b61353c | 4316 | #ifdef SYNC_INPUT |
ef5eb925 | 4317 | else |
c3eff1b0 | 4318 | process_pending_signals (); |
6b61353c | 4319 | #endif |
d0d6b7c5 | 4320 | |
889255b4 | 4321 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4322 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4323 | break; |
4324 | ||
d0d6b7c5 JB |
4325 | /* Compute time from now till when time limit is up */ |
4326 | /* Exit if already run out */ | |
4327 | if (time_limit == -1) | |
4328 | { | |
4329 | /* -1 specified for timeout means | |
4330 | gobble output available now | |
4331 | but don't wait at all. */ | |
4332 | ||
4333 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4334 | } | |
4335 | else if (time_limit || microsecs) | |
4336 | { | |
4337 | EMACS_GET_TIME (timeout); | |
4338 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4339 | if (EMACS_TIME_NEG_P (timeout)) | |
4340 | break; | |
4341 | } | |
4342 | else | |
4343 | { | |
4344 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4345 | } | |
4346 | ||
f854a00b RS |
4347 | /* Normally we run timers here. |
4348 | But not if wait_for_cell; in those cases, | |
4349 | the wait is supposed to be short, | |
4350 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4351 | if (NILP (wait_for_cell) |
b89a415a | 4352 | && just_wait_proc >= 0) |
fb4c3627 | 4353 | { |
c0239a0b | 4354 | EMACS_TIME timer_delay; |
c573ae8e | 4355 | |
9baacf76 | 4356 | do |
c573ae8e | 4357 | { |
9baacf76 | 4358 | int old_timers_run = timers_run; |
c88164fe | 4359 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4360 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4361 | |
f868cd8a | 4362 | timer_delay = timer_check (); |
a2fab450 GM |
4363 | |
4364 | /* If a timer has run, this might have changed buffers | |
4365 | an alike. Make read_key_sequence aware of that. */ | |
4366 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4367 | && (old_buffer != current_buffer |
4368 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4369 | && waiting_for_user_input_p == -1) |
4370 | record_asynch_buffer_change (); | |
177c0ea7 | 4371 | |
9baacf76 GM |
4372 | if (timers_run != old_timers_run && do_display) |
4373 | /* We must retry, since a timer may have requeued itself | |
4374 | and that could alter the time_delay. */ | |
3007ebfb | 4375 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4376 | else |
4377 | break; | |
c573ae8e | 4378 | } |
9baacf76 | 4379 | while (!detect_input_pending ()); |
c573ae8e | 4380 | |
69645afc | 4381 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4382 | if (read_kbd != 0 |
69645afc RS |
4383 | && requeued_events_pending_p ()) |
4384 | break; | |
4385 | ||
c0239a0b | 4386 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4387 | { |
4388 | EMACS_TIME difference; | |
4389 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4390 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4391 | { |
4392 | timeout = timer_delay; | |
4393 | timeout_reduced_for_timers = 1; | |
4394 | } | |
fb4c3627 | 4395 | } |
4abca5e7 RS |
4396 | /* If time_limit is -1, we are not going to wait at all. */ |
4397 | else if (time_limit != -1) | |
c573ae8e RS |
4398 | { |
4399 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4400 | wait_reading_process_output_1 (); |
c573ae8e | 4401 | } |
fb4c3627 RS |
4402 | } |
4403 | ||
90ab1a81 JB |
4404 | /* Cause C-g and alarm signals to take immediate action, |
4405 | and cause input available signals to zero out timeout. | |
4406 | ||
4407 | It is important that we do this before checking for process | |
4408 | activity. If we get a SIGCHLD after the explicit checks for | |
4409 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4410 | if (read_kbd < 0) |
90ab1a81 JB |
4411 | set_waiting_for_input (&timeout); |
4412 | ||
6be429b1 JB |
4413 | /* If status of something has changed, and no input is |
4414 | available, notify the user of the change right away. After | |
4415 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4416 | timeout to get our attention. */ |
4417 | if (update_tick != process_tick) | |
6be429b1 | 4418 | { |
bad49fc7 | 4419 | SELECT_TYPE Atemp; |
bad49fc7 | 4420 | SELECT_TYPE Ctemp; |
dd2a17ab | 4421 | |
cb768704 J |
4422 | if (kbd_on_hold_p ()) |
4423 | FD_ZERO (&Atemp); | |
4424 | else | |
4425 | Atemp = input_wait_mask; | |
3fad2ad2 | 4426 | Ctemp = write_mask; |
bad49fc7 | 4427 | |
6be429b1 | 4428 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
3fad2ad2 | 4429 | if ((select (max (max_process_desc, max_input_desc) + 1, |
177c0ea7 | 4430 | &Atemp, |
bad49fc7 | 4431 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4432 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4433 | #else |
4434 | (SELECT_TYPE *)0, | |
4435 | #endif | |
dd2a17ab | 4436 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4437 | <= 0)) |
90ab1a81 JB |
4438 | { |
4439 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4440 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4441 | clear_waiting_for_input (); |
ff6daed3 | 4442 | status_notify (NULL); |
e42bdf01 | 4443 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4444 | } |
6be429b1 JB |
4445 | } |
4446 | ||
dd2a17ab | 4447 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4448 | read whatever data has already been received. */ |
6bfd98e7 | 4449 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4450 | update_status (wait_proc); |
6bfd98e7 | 4451 | if (wait_proc |
dd2a17ab KS |
4452 | && ! EQ (wait_proc->status, Qrun) |
4453 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4454 | { |
215b45e9 | 4455 | int nread, total_nread = 0; |
7ce63188 | 4456 | |
9aa2a7f4 | 4457 | clear_waiting_for_input (); |
7ce63188 RS |
4458 | XSETPROCESS (proc, wait_proc); |
4459 | ||
4460 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4461 | while (wait_proc->infd >= 0) |
215b45e9 | 4462 | { |
60f0fb11 | 4463 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4464 | |
4465 | if (nread == 0) | |
4466 | break; | |
4467 | ||
63136da6 AS |
4468 | if (0 < nread) |
4469 | { | |
891bd142 SM |
4470 | total_nread += nread; |
4471 | got_some_input = 1; | |
4472 | } | |
215b45e9 RS |
4473 | #ifdef EIO |
4474 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4475 | break; |
e1b37c34 GM |
4476 | #endif |
4477 | #ifdef EAGAIN | |
4478 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4479 | break; |
e1b37c34 GM |
4480 | #endif |
4481 | #ifdef EWOULDBLOCK | |
4482 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4483 | break; |
215b45e9 RS |
4484 | #endif |
4485 | } | |
7ce63188 | 4486 | if (total_nread > 0 && do_display) |
3007ebfb | 4487 | redisplay_preserve_echo_area (10); |
7ce63188 | 4488 | |
9aa2a7f4 JB |
4489 | break; |
4490 | } | |
6be429b1 | 4491 | |
d0d6b7c5 JB |
4492 | /* Wait till there is something to do */ |
4493 | ||
b89a415a | 4494 | if (wait_proc && just_wait_proc) |
107ed38d | 4495 | { |
60f0fb11 | 4496 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4497 | break; |
60f0fb11 | 4498 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4499 | check_delay = 0; |
3fad2ad2 | 4500 | check_write = 0; |
107ed38d KS |
4501 | } |
4502 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4503 | { |
4504 | Available = non_process_wait_mask; | |
bad49fc7 | 4505 | check_delay = 0; |
3fad2ad2 | 4506 | check_write = 0; |
dd2a17ab | 4507 | } |
a69281ff | 4508 | else |
dd2a17ab | 4509 | { |
b89a415a | 4510 | if (! read_kbd) |
dd2a17ab KS |
4511 | Available = non_keyboard_wait_mask; |
4512 | else | |
4513 | Available = input_wait_mask; | |
3fad2ad2 | 4514 | Writeok = write_mask; |
82d6e50b J |
4515 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4516 | check_write = 0; | |
4517 | #else | |
3fad2ad2 | 4518 | check_write = 1; |
82d6e50b | 4519 | #endif |
6b61353c | 4520 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4521 | } |
d0d6b7c5 | 4522 | |
ff11dfa1 | 4523 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4524 | redisplay now, before we start to wait. There is a race |
4525 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4526 | and indicates that a frame is trashed, the select may block |
4527 | displaying a trashed screen. */ | |
5164ee8e | 4528 | if (frame_garbaged && do_display) |
7286affd RS |
4529 | { |
4530 | clear_waiting_for_input (); | |
3007ebfb | 4531 | redisplay_preserve_echo_area (11); |
b89a415a | 4532 | if (read_kbd < 0) |
7efe788e | 4533 | set_waiting_for_input (&timeout); |
7286affd | 4534 | } |
ffd56f97 | 4535 | |
029529ac CY |
4536 | /* Skip the `select' call if input is available and we're |
4537 | waiting for keyboard input or a cell change (which can be | |
4538 | triggered by processing X events). In the latter case, set | |
4539 | nfds to 1 to avoid breaking the loop. */ | |
dd2a17ab | 4540 | no_avail = 0; |
029529ac CY |
4541 | if ((read_kbd || !NILP (wait_for_cell)) |
4542 | && detect_input_pending ()) | |
0a65b032 | 4543 | { |
029529ac | 4544 | nfds = read_kbd ? 0 : 1; |
dd2a17ab | 4545 | no_avail = 1; |
0a65b032 | 4546 | } |
029529ac CY |
4547 | |
4548 | if (!no_avail) | |
dd2a17ab | 4549 | { |
6b61353c KH |
4550 | |
4551 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4552 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4553 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4554 | read_output_delay, and we are not reading output for a |
4555 | specific wait_channel. It is not executed if | |
4556 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4557 | if (process_output_skip && check_delay > 0) |
4558 | { | |
4559 | int usecs = EMACS_USECS (timeout); | |
4560 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4561 | usecs = READ_OUTPUT_DELAY_MAX; | |
4562 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4563 | { | |
4564 | proc = chan_process[channel]; | |
4565 | if (NILP (proc)) | |
4566 | continue; | |
db853b7a | 4567 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4568 | processes with non-zero read_output_skip. */ |
4569 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4570 | { |
4571 | check_delay--; | |
60f0fb11 | 4572 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4573 | continue; |
4574 | FD_CLR (channel, &Available); | |
60f0fb11 SM |
4575 | XPROCESS (proc)->read_output_skip = 0; |
4576 | if (XPROCESS (proc)->read_output_delay < usecs) | |
4577 | usecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4578 | } |
4579 | } | |
4580 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4581 | process_output_skip = 0; | |
4582 | } | |
4583 | #endif | |
0949d2b6 | 4584 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 JD |
4585 | nfds = xg_select |
4586 | #elif defined (HAVE_NS) | |
63136da6 | 4587 | nfds = ns_select |
edfda783 | 4588 | #else |
63136da6 | 4589 | nfds = select |
edfda783 | 4590 | #endif |
3fad2ad2 J |
4591 | (max (max_process_desc, max_input_desc) + 1, |
4592 | &Available, | |
4593 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
4594 | (SELECT_TYPE *)0, &timeout); | |
e061a11b TZ |
4595 | |
4596 | #ifdef HAVE_GNUTLS | |
4597 | /* GnuTLS buffers data internally. In lowat mode it leaves | |
4598 | some data in the TCP buffers so that select works, but | |
4599 | with custom pull/push functions we need to check if some | |
4600 | data is available in the buffers manually. */ | |
8727937b | 4601 | if (nfds == 0 && |
e061a11b TZ |
4602 | wait_proc && wait_proc->gnutls_p /* Check for valid process. */ |
4603 | /* Do we have pending data? */ | |
0898ca10 | 4604 | && emacs_gnutls_record_check_pending (wait_proc->gnutls_state) > 0) |
e061a11b TZ |
4605 | { |
4606 | nfds = 1; | |
4607 | /* Set to Available. */ | |
4608 | FD_SET (wait_proc->infd, &Available); | |
4609 | } | |
4610 | #endif | |
dd2a17ab | 4611 | } |
6720a7fb | 4612 | |
d0d6b7c5 JB |
4613 | xerrno = errno; |
4614 | ||
4615 | /* Make C-g and alarm signals set flags again */ | |
4616 | clear_waiting_for_input (); | |
4617 | ||
4618 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4619 | do_pending_window_change (0); |
d0d6b7c5 | 4620 | |
c0239a0b RS |
4621 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4622 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4623 | break; |
4624 | if (nfds < 0) | |
4625 | { | |
4626 | if (xerrno == EINTR) | |
dd2a17ab | 4627 | no_avail = 1; |
d0d6b7c5 JB |
4628 | else if (xerrno == EBADF) |
4629 | { | |
4630 | #ifdef AIX | |
4631 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4632 | the child's closure of the pts gives the parent a SIGHUP, and | |
4633 | the ptc file descriptor is automatically closed, | |
4634 | yielding EBADF here or at select() call above. | |
4635 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4636 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4637 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4638 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4639 | #else |
4640 | abort (); | |
4641 | #endif | |
4642 | } | |
4643 | else | |
68c45bf0 | 4644 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4645 | } |
dd2a17ab KS |
4646 | |
4647 | if (no_avail) | |
4648 | { | |
4649 | FD_ZERO (&Available); | |
3fad2ad2 | 4650 | check_write = 0; |
dd2a17ab KS |
4651 | } |
4652 | ||
5d5beb62 RS |
4653 | #if 0 /* When polling is used, interrupt_input is 0, |
4654 | so get_input_pending should read the input. | |
4655 | So this should not be needed. */ | |
4656 | /* If we are using polling for input, | |
4657 | and we see input available, make it get read now. | |
4658 | Otherwise it might not actually get read for a second. | |
214d6069 | 4659 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4660 | it might never get read at all if we don't spend much time |
214d6069 | 4661 | outside of wait_reading_process_output. */ |
b89a415a | 4662 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4663 | && keyboard_bit_set (&Available) |
4664 | && input_polling_used ()) | |
4665 | kill (getpid (), SIGALRM); | |
4666 | #endif | |
4667 | ||
d0d6b7c5 JB |
4668 | /* Check for keyboard input */ |
4669 | /* If there is any, return immediately | |
4670 | to give it higher priority than subprocesses */ | |
4671 | ||
b89a415a | 4672 | if (read_kbd != 0) |
6ed6233b | 4673 | { |
a2fab450 | 4674 | int old_timers_run = timers_run; |
c88164fe | 4675 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4676 | Lisp_Object old_window = selected_window; |
a2fab450 | 4677 | int leave = 0; |
177c0ea7 | 4678 | |
5d6c2aa3 | 4679 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4680 | { |
4681 | swallow_events (do_display); | |
4682 | if (detect_input_pending_run_timers (do_display)) | |
4683 | leave = 1; | |
4684 | } | |
6ed6233b | 4685 | |
a2fab450 GM |
4686 | /* If a timer has run, this might have changed buffers |
4687 | an alike. Make read_key_sequence aware of that. */ | |
4688 | if (timers_run != old_timers_run | |
c88164fe | 4689 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4690 | && (old_buffer != current_buffer |
4691 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4692 | record_asynch_buffer_change (); |
4693 | ||
4694 | if (leave) | |
4695 | break; | |
177c0ea7 JB |
4696 | } |
4697 | ||
69645afc | 4698 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4699 | if (read_kbd != 0 |
69645afc RS |
4700 | && requeued_events_pending_p ()) |
4701 | break; | |
4702 | ||
77e1b3d4 RS |
4703 | /* If we are not checking for keyboard input now, |
4704 | do process events (but don't run any timers). | |
4705 | This is so that X events will be processed. | |
0c9960e9 | 4706 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4707 | That would causes delays in pasting selections, for example. |
4708 | ||
4709 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4710 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4711 | { |
4712 | swallow_events (do_display); | |
0c9960e9 | 4713 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4714 | if (detect_input_pending ()) |
4715 | break; | |
5d5beb62 | 4716 | #endif |
0c9960e9 | 4717 | } |
f854a00b | 4718 | |
84aa3ace | 4719 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4720 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4721 | break; |
4722 | ||
4746118a | 4723 | #ifdef SIGIO |
5d5beb62 | 4724 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4725 | go read it. This can happen with X on BSD after logging out. |
4726 | In that case, there really is no input and no SIGIO, | |
4727 | but select says there is input. */ | |
4728 | ||
b89a415a | 4729 | if (read_kbd && interrupt_input |
2601f59e | 4730 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4731 | kill (getpid (), SIGIO); |
4746118a | 4732 | #endif |
d0d6b7c5 | 4733 | |
d0d6b7c5 JB |
4734 | if (! wait_proc) |
4735 | got_some_input |= nfds > 0; | |
4736 | ||
32676c08 JB |
4737 | /* If checking input just got us a size-change event from X, |
4738 | obey it now if we should. */ | |
b89a415a | 4739 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4740 | do_pending_window_change (0); |
32676c08 | 4741 | |
a9f2c884 | 4742 | /* Check for data from a process. */ |
dd2a17ab KS |
4743 | if (no_avail || nfds == 0) |
4744 | continue; | |
4745 | ||
3fad2ad2 J |
4746 | for (channel = 0; channel <= max_input_desc; ++channel) |
4747 | { | |
4748 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
4749 | if (FD_ISSET (channel, &Available) | |
4750 | && d->func != 0 | |
4751 | && (d->condition & FOR_READ) != 0) | |
4752 | d->func (channel, d->data, 1); | |
4753 | if (FD_ISSET (channel, &write_mask) | |
4754 | && d->func != 0 | |
4755 | && (d->condition & FOR_WRITE) != 0) | |
4756 | d->func (channel, d->data, 0); | |
4757 | } | |
4758 | ||
a69281ff | 4759 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4760 | { |
a69281ff | 4761 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4762 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4763 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4764 | { |
4765 | int nread; | |
4766 | ||
4767 | /* If waiting for this channel, arrange to return as | |
4768 | soon as no more input to be processed. No more | |
4769 | waiting. */ | |
4770 | if (wait_channel == channel) | |
4771 | { | |
a9f2c884 | 4772 | wait_channel = -1; |
d0d6b7c5 JB |
4773 | time_limit = -1; |
4774 | got_some_input = 1; | |
4775 | } | |
4776 | proc = chan_process[channel]; | |
4777 | if (NILP (proc)) | |
4778 | continue; | |
4779 | ||
e690ca94 KS |
4780 | /* If this is a server stream socket, accept connection. */ |
4781 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4782 | { | |
4783 | server_accept_connection (proc, channel); | |
4784 | continue; | |
4785 | } | |
4786 | ||
d0d6b7c5 JB |
4787 | /* Read data from the process, starting with our |
4788 | buffered-ahead character if we have one. */ | |
4789 | ||
4790 | nread = read_process_output (proc, channel); | |
4791 | if (nread > 0) | |
4792 | { | |
4793 | /* Since read_process_output can run a filter, | |
4794 | which can call accept-process-output, | |
4795 | don't try to read from any other processes | |
4796 | before doing the select again. */ | |
4797 | FD_ZERO (&Available); | |
4798 | ||
4799 | if (do_display) | |
3007ebfb | 4800 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4801 | } |
4802 | #ifdef EWOULDBLOCK | |
4803 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4804 | ; | |
0b75e9a4 | 4805 | #endif |
89d7280d RS |
4806 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4807 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4808 | #ifdef O_NONBLOCK |
4809 | else if (nread == -1 && errno == EAGAIN) | |
4810 | ; | |
4811 | #else | |
4812 | #ifdef O_NDELAY | |
4813 | else if (nread == -1 && errno == EAGAIN) | |
4814 | ; | |
4815 | /* Note that we cannot distinguish between no input | |
4816 | available now and a closed pipe. | |
4817 | With luck, a closed pipe will be accompanied by | |
4818 | subprocess termination and SIGCHLD. */ | |
d888760c | 4819 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4820 | ; |
4740825c KS |
4821 | #endif /* O_NDELAY */ |
4822 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4823 | #ifdef HAVE_PTYS |
4824 | /* On some OSs with ptys, when the process on one end of | |
4825 | a pty exits, the other end gets an error reading with | |
4826 | errno = EIO instead of getting an EOF (0 bytes read). | |
4827 | Therefore, if we get an error reading and errno = | |
4828 | EIO, just continue, because the child process has | |
4829 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4830 | get a SIGCHLD). |
4831 | ||
4832 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4833 | got lost. So raise the signal again just in case. |
5651af6d | 4834 | It can't hurt. */ |
d0d6b7c5 | 4835 | else if (nread == -1 && errno == EIO) |
4740825c | 4836 | { |
a70d5371 | 4837 | /* Clear the descriptor now, so we only raise the |
42371deb | 4838 | signal once. Don't do this if `process' is only |
a70d5371 NR |
4839 | a pty. */ |
4840 | if (XPROCESS (proc)->pid != -2) | |
4841 | { | |
4842 | FD_CLR (channel, &input_wait_mask); | |
4843 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4740825c | 4844 | |
a70d5371 NR |
4845 | kill (getpid (), SIGCHLD); |
4846 | } | |
4740825c KS |
4847 | } |
4848 | #endif /* HAVE_PTYS */ | |
ffd56f97 JB |
4849 | /* If we can detect process termination, don't consider the process |
4850 | gone just because its pipe is closed. */ | |
d0d6b7c5 | 4851 | #ifdef SIGCHLD |
d888760c | 4852 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4853 | ; |
4854 | #endif | |
4855 | else | |
4856 | { | |
4857 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4858 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4859 | deactivate_process (proc); |
6bfd98e7 | 4860 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 JB |
4861 | update_status (XPROCESS (proc)); |
4862 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4863 | XPROCESS (proc)->status | |
4864 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4865 | } | |
4866 | } | |
177c0ea7 | 4867 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 4868 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 4869 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
4870 | { |
4871 | struct Lisp_Process *p; | |
dd2a17ab KS |
4872 | |
4873 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 4874 | FD_CLR (channel, &write_mask); |
dd2a17ab KS |
4875 | if (--num_pending_connects < 0) |
4876 | abort (); | |
4877 | ||
4878 | proc = chan_process[channel]; | |
4879 | if (NILP (proc)) | |
4880 | continue; | |
4881 | ||
4882 | p = XPROCESS (proc); | |
4883 | ||
4884 | #ifdef GNU_LINUX | |
4885 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 4886 | So only use it on systems where it is known to work. */ |
dd2a17ab | 4887 | { |
401bf9b4 | 4888 | socklen_t xlen = sizeof (xerrno); |
ed3751c8 | 4889 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
dd2a17ab KS |
4890 | xerrno = errno; |
4891 | } | |
4892 | #else | |
44c887be PJ |
4893 | { |
4894 | struct sockaddr pname; | |
ed3751c8 | 4895 | int pnamelen = sizeof (pname); |
44c887be PJ |
4896 | |
4897 | /* If connection failed, getpeername will fail. */ | |
4898 | xerrno = 0; | |
ed3751c8 | 4899 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
4900 | { |
4901 | /* Obtain connect failure code through error slippage. */ | |
4902 | char dummy; | |
dd2a17ab | 4903 | xerrno = errno; |
ed3751c8 | 4904 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
4905 | xerrno = errno; |
4906 | } | |
4907 | } | |
dd2a17ab KS |
4908 | #endif |
4909 | if (xerrno) | |
4910 | { | |
60f0fb11 | 4911 | p->tick = ++process_tick; |
dd2a17ab KS |
4912 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); |
4913 | deactivate_process (proc); | |
4914 | } | |
4915 | else | |
4916 | { | |
4917 | p->status = Qrun; | |
4918 | /* Execute the sentinel here. If we had relied on | |
4919 | status_notify to do it later, it will read input | |
4920 | from the process before calling the sentinel. */ | |
4921 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4922 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 4923 | { |
60f0fb11 SM |
4924 | FD_SET (p->infd, &input_wait_mask); |
4925 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
4926 | } |
4927 | } | |
4928 | } | |
4929 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4930 | } /* end for each file descriptor */ |
4931 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4932 | |
2beb96f9 | 4933 | unbind_to (count, Qnil); |
d430ee71 | 4934 | |
ffd56f97 JB |
4935 | /* If calling from keyboard input, do not quit |
4936 | since we want to return C-g as an input character. | |
4937 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4938 | if (read_kbd >= 0) |
ffd56f97 JB |
4939 | { |
4940 | /* Prevent input_pending from remaining set if we quit. */ | |
4941 | clear_input_pending (); | |
4942 | QUIT; | |
4943 | } | |
efa2a55c | 4944 | |
d0d6b7c5 JB |
4945 | return got_some_input; |
4946 | } | |
4947 | \f | |
3b9a3dfa RS |
4948 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4949 | ||
4950 | static Lisp_Object | |
d3da34e0 | 4951 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 4952 | { |
70949dac | 4953 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4954 | } |
4955 | ||
4956 | static Lisp_Object | |
b93aacde | 4957 | read_process_output_error_handler (Lisp_Object error_val) |
3b9a3dfa | 4958 | { |
b93aacde | 4959 | cmd_error_internal (error_val, "error in process filter: "); |
3b9a3dfa RS |
4960 | Vinhibit_quit = Qt; |
4961 | update_echo_area (); | |
833ba342 | 4962 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4963 | return Qt; |
3b9a3dfa RS |
4964 | } |
4965 | ||
d0d6b7c5 JB |
4966 | /* Read pending output from the process channel, |
4967 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 4968 | Yield number of decoded characters read. |
d0d6b7c5 | 4969 | |
116c423c | 4970 | This function reads at most 4096 characters. |
d0d6b7c5 | 4971 | If you want to read all available subprocess output, |
0fa1789e KH |
4972 | you must call it repeatedly until it returns zero. |
4973 | ||
4974 | The characters read are decoded according to PROC's coding-system | |
4975 | for decoding. */ | |
d0d6b7c5 | 4976 | |
ff6daed3 | 4977 | static int |
d3da34e0 | 4978 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 4979 | { |
368f4090 | 4980 | register ssize_t nbytes; |
d0d6b7c5 | 4981 | char *chars; |
d0d6b7c5 | 4982 | register Lisp_Object outstream; |
d0d6b7c5 | 4983 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 4984 | register ptrdiff_t opoint; |
c7580538 | 4985 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 4986 | int carryover = p->decoding_carryover; |
116c423c | 4987 | int readmax = 4096; |
d311d28c | 4988 | ptrdiff_t count = SPECPDL_INDEX (); |
3a4fa2f2 | 4989 | Lisp_Object odeactivate; |
d0d6b7c5 | 4990 | |
e690ca94 | 4991 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
4992 | if (carryover) |
4993 | /* See the comment above. */ | |
72af86bd | 4994 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 4995 | |
e690ca94 KS |
4996 | #ifdef DATAGRAM_SOCKETS |
4997 | /* We have a working select, so proc_buffered_char is always -1. */ | |
4998 | if (DATAGRAM_CHAN_P (channel)) | |
4999 | { | |
401bf9b4 | 5000 | socklen_t len = datagram_address[channel].len; |
39b1da20 | 5001 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5002 | 0, datagram_address[channel].sa, &len); |
5003 | } | |
5004 | else | |
5005 | #endif | |
6b61353c | 5006 | { |
82eaa333 PE |
5007 | int buffered = 0 <= proc_buffered_char[channel]; |
5008 | if (buffered) | |
5009 | { | |
5010 | chars[carryover] = proc_buffered_char[channel]; | |
5011 | proc_buffered_char[channel] = -1; | |
5012 | } | |
8af55556 | 5013 | #ifdef HAVE_GNUTLS |
df7fcaff | 5014 | if (XPROCESS (proc)->gnutls_p) |
e968f4f3 | 5015 | nbytes = emacs_gnutls_read (XPROCESS (proc), |
82eaa333 PE |
5016 | chars + carryover + buffered, |
5017 | readmax - buffered); | |
8af55556 TZ |
5018 | else |
5019 | #endif | |
82eaa333 PE |
5020 | nbytes = emacs_read (channel, chars + carryover + buffered, |
5021 | readmax - buffered); | |
6b61353c | 5022 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5023 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5024 | { |
60f0fb11 | 5025 | int delay = p->read_output_delay; |
6b61353c KH |
5026 | if (nbytes < 256) |
5027 | { | |
5028 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5029 | { | |
5030 | if (delay == 0) | |
5031 | process_output_delay_count++; | |
5032 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5033 | } | |
5034 | } | |
82eaa333 | 5035 | else if (delay > 0 && nbytes == readmax - buffered) |
6b61353c KH |
5036 | { |
5037 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5038 | if (delay == 0) | |
5039 | process_output_delay_count--; | |
5040 | } | |
60f0fb11 | 5041 | p->read_output_delay = delay; |
6b61353c KH |
5042 | if (delay) |
5043 | { | |
60f0fb11 | 5044 | p->read_output_skip = 1; |
6b61353c KH |
5045 | process_output_skip = 1; |
5046 | } | |
5047 | } | |
5048 | #endif | |
fe07cdfa PE |
5049 | nbytes += buffered; |
5050 | nbytes += buffered && nbytes <= 0; | |
d0d6b7c5 | 5051 | } |
d0d6b7c5 | 5052 | |
60f0fb11 | 5053 | p->decoding_carryover = 0; |
ca65341e | 5054 | |
ed7a4b2d | 5055 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5056 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5057 | if (nbytes <= 0) |
5058 | { | |
5059 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5060 | return nbytes; | |
5061 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5062 | } | |
d0d6b7c5 | 5063 | |
1d2fc612 | 5064 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5065 | nbytes += carryover; |
0fa1789e | 5066 | |
3a4fa2f2 SM |
5067 | odeactivate = Vdeactivate_mark; |
5068 | /* There's no good reason to let process filters change the current | |
5069 | buffer, and many callers of accept-process-output, sit-for, and | |
5070 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 5071 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
3a4fa2f2 | 5072 | |
1d2fc612 | 5073 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
5074 | outstream = p->filter; |
5075 | if (!NILP (outstream)) | |
5076 | { | |
1d2fc612 | 5077 | Lisp_Object text; |
4da2f5be | 5078 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5079 | int waiting = waiting_for_user_input_p; |
30c78175 | 5080 | |
dfc21838 RS |
5081 | /* No need to gcpro these, because all we do with them later |
5082 | is test them for EQness, and none of them should be a string. */ | |
aba7731a PE |
5083 | #if 0 |
5084 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 5085 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 5086 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 5087 | #endif |
30c78175 | 5088 | |
3a4fa2f2 SM |
5089 | /* We inhibit quit here instead of just catching it so that |
5090 | hitting ^G when a filter happens to be running won't screw | |
5091 | it up. */ | |
d0d6b7c5 | 5092 | specbind (Qinhibit_quit, Qt); |
6545aada | 5093 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5094 | |
4da2f5be RS |
5095 | /* In case we get recursively called, |
5096 | and we already saved the match data nonrecursively, | |
5097 | save the same match data in safely recursive fashion. */ | |
5098 | if (outer_running_asynch_code) | |
5099 | { | |
5100 | Lisp_Object tem; | |
5101 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5102 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5103 | restore_search_regs (); | |
5104 | record_unwind_save_match_data (); | |
5105 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5106 | } |
5107 | ||
5108 | /* For speed, if a search happens within this code, | |
5109 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5110 | running_asynch_code = 1; |
4da2f5be | 5111 | |
400a67ff | 5112 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 | 5113 | text = coding->dst_object; |
5bbf78c1 | 5114 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5115 | /* A new coding system might be found. */ |
5bbf78c1 | 5116 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5117 | { |
5bbf78c1 | 5118 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d KH |
5119 | |
5120 | /* Don't call setup_coding_system for | |
5121 | proc_decode_coding_system[channel] here. It is done in | |
5122 | detect_coding called via decode_coding above. */ | |
5123 | ||
5124 | /* If a coding system for encoding is not yet decided, we set | |
5125 | it as the same as coding-system for decoding. | |
5126 | ||
5127 | But, before doing that we must check if | |
5128 | proc_encode_coding_system[p->outfd] surely points to a | |
5129 | valid memory because p->outfd will be changed once EOF is | |
5130 | sent to the process. */ | |
5131 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5132 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5133 | { |
76d812bb KH |
5134 | p->encode_coding_system |
5135 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5136 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5137 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5138 | } |
5139 | } | |
51c6067d | 5140 | |
dd8c7a53 KH |
5141 | if (coding->carryover_bytes > 0) |
5142 | { | |
04961398 KH |
5143 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5144 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5145 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5146 | coding->carryover_bytes); | |
8c406a9b | 5147 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5148 | } |
e430e5ba | 5149 | if (SBYTES (text) > 0) |
963b492b SM |
5150 | /* FIXME: It's wrong to wrap or not based on debug-on-error, and |
5151 | sometimes it's simply wrong to wrap (e.g. when called from | |
5152 | accept-process-output). */ | |
dd97db06 KH |
5153 | internal_condition_case_1 (read_process_output_call, |
5154 | Fcons (outstream, | |
5155 | Fcons (proc, Fcons (text, Qnil))), | |
5156 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5157 | read_process_output_error_handler); | |
4da2f5be RS |
5158 | |
5159 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5160 | restore_search_regs (); |
4da2f5be | 5161 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5162 | |
bbce7d72 RS |
5163 | /* Restore waiting_for_user_input_p as it was |
5164 | when we were called, in case the filter clobbered it. */ | |
5165 | waiting_for_user_input_p = waiting; | |
5166 | ||
7973cfa8 RS |
5167 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5168 | because we might have changed minor modes or other things | |
5169 | that affect key bindings. */ | |
dfc21838 RS |
5170 | if (! EQ (Fcurrent_buffer (), obuffer) |
5171 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5172 | #endif |
927e08be RS |
5173 | /* But do it only if the caller is actually going to read events. |
5174 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5175 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5176 | if (waiting_for_user_input_p == -1) |
5177 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5178 | } |
5179 | ||
5180 | /* If no filter, write into buffer if it isn't dead. */ | |
4b4deea2 | 5181 | else if (!NILP (p->buffer) && !NILP (BVAR (XBUFFER (p->buffer), name))) |
d0d6b7c5 | 5182 | { |
b0310da4 | 5183 | Lisp_Object old_read_only; |
d311d28c PE |
5184 | ptrdiff_t old_begv, old_zv; |
5185 | ptrdiff_t old_begv_byte, old_zv_byte; | |
5186 | ptrdiff_t before, before_byte; | |
5187 | ptrdiff_t opoint_byte; | |
ed7a4b2d | 5188 | Lisp_Object text; |
926b7e5e | 5189 | struct buffer *b; |
30c78175 | 5190 | |
d0d6b7c5 | 5191 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5192 | opoint = PT; |
d8a2934e | 5193 | opoint_byte = PT_BYTE; |
4b4deea2 | 5194 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5195 | old_begv = BEGV; |
5196 | old_zv = ZV; | |
d8a2934e RS |
5197 | old_begv_byte = BEGV_BYTE; |
5198 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5199 | |
4b4deea2 | 5200 | BVAR (current_buffer, read_only) = Qnil; |
d0d6b7c5 JB |
5201 | |
5202 | /* Insert new output into buffer | |
5203 | at the current end-of-output marker, | |
5204 | thus preserving logical ordering of input and output. */ | |
5205 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5206 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5207 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5208 | ZV_BYTE)); | |
d0d6b7c5 | 5209 | else |
d8a2934e | 5210 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5211 | before = PT; |
d8a2934e | 5212 | before_byte = PT_BYTE; |
b0310da4 JB |
5213 | |
5214 | /* If the output marker is outside of the visible region, save | |
5215 | the restriction and widen. */ | |
6ec8bbd2 | 5216 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5217 | Fwiden (); |
5218 | ||
400a67ff | 5219 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 KH |
5220 | text = coding->dst_object; |
5221 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5222 | /* A new coding system might be found. See the comment in the |
5223 | similar code in the previous `if' block. */ | |
5bbf78c1 | 5224 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5225 | { |
5bbf78c1 | 5226 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d | 5227 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5228 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5229 | { |
76d812bb KH |
5230 | p->encode_coding_system |
5231 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5232 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5233 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5234 | } |
5235 | } | |
dd8c7a53 KH |
5236 | if (coding->carryover_bytes > 0) |
5237 | { | |
04961398 KH |
5238 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5239 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5240 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5241 | coding->carryover_bytes); | |
8c406a9b | 5242 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5243 | } |
d69864bf | 5244 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5245 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5246 | != ! STRING_MULTIBYTE (text)) |
5247 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5248 | ? Fstring_as_unibyte (text) |
03f04413 | 5249 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5250 | /* Insert before markers in case we are inserting where |
5251 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5252 | insert_from_string_before_markers (text, 0, 0, |
5253 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5254 | |
926b7e5e GM |
5255 | /* Make sure the process marker's position is valid when the |
5256 | process buffer is changed in the signal_after_change above. | |
5257 | W3 is known to do that. */ | |
5258 | if (BUFFERP (p->buffer) | |
5259 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5260 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5261 | else | |
5262 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5263 | |
d0d6b7c5 JB |
5264 | update_mode_lines++; |
5265 | ||
12ca5cdf RS |
5266 | /* Make sure opoint and the old restrictions |
5267 | float ahead of any new text just as point would. */ | |
5268 | if (opoint >= before) | |
d8a2934e RS |
5269 | { |
5270 | opoint += PT - before; | |
5271 | opoint_byte += PT_BYTE - before_byte; | |
5272 | } | |
12ca5cdf | 5273 | if (old_begv > before) |
d8a2934e RS |
5274 | { |
5275 | old_begv += PT - before; | |
5276 | old_begv_byte += PT_BYTE - before_byte; | |
5277 | } | |
12ca5cdf | 5278 | if (old_zv >= before) |
d8a2934e RS |
5279 | { |
5280 | old_zv += PT - before; | |
5281 | old_zv_byte += PT_BYTE - before_byte; | |
5282 | } | |
12ca5cdf | 5283 | |
b0310da4 | 5284 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5285 | if (old_begv != BEGV || old_zv != ZV) |
5286 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5287 | |
30c78175 | 5288 | |
4b4deea2 | 5289 | BVAR (current_buffer, read_only) = old_read_only; |
d8a2934e | 5290 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5291 | } |
3a4fa2f2 SM |
5292 | /* Handling the process output should not deactivate the mark. */ |
5293 | Vdeactivate_mark = odeactivate; | |
5294 | ||
5295 | unbind_to (count, Qnil); | |
1d2fc612 | 5296 | return nbytes; |
d0d6b7c5 | 5297 | } |
d0d6b7c5 JB |
5298 | \f |
5299 | /* Sending data to subprocess */ | |
5300 | ||
40ccffa6 PE |
5301 | static jmp_buf send_process_frame; |
5302 | static Lisp_Object process_sent_to; | |
d0d6b7c5 | 5303 | |
006c5daa PE |
5304 | #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD |
5305 | static void send_process_trap (int) NO_RETURN; | |
5306 | #endif | |
5307 | ||
9af30bdf | 5308 | static void |
d3da34e0 | 5309 | send_process_trap (int ignore) |
d0d6b7c5 | 5310 | { |
333f1b6f | 5311 | SIGNAL_THREAD_CHECK (SIGPIPE); |
c8f44005 | 5312 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5313 | longjmp (send_process_frame, 1); |
5314 | } | |
5315 | ||
4556b700 RS |
5316 | /* Send some data to process PROC. |
5317 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5318 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5319 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5320 | |
a92e4183 KH |
5321 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5322 | for encoding before it is sent. | |
1fb0098c GM |
5323 | |
5324 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5325 | |
ff6daed3 | 5326 | static void |
400a67ff | 5327 | send_process (volatile Lisp_Object proc, const char *volatile buf, |
d311d28c | 5328 | volatile ptrdiff_t len, volatile Lisp_Object object) |
d0d6b7c5 | 5329 | { |
ecd1f654 | 5330 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5331 | struct Lisp_Process *p = XPROCESS (proc); |
368f4090 | 5332 | ssize_t rv; |
0fa1789e | 5333 | struct coding_system *coding; |
347f3cd3 | 5334 | struct gcpro gcpro1; |
9af30bdf | 5335 | void (*volatile old_sigpipe) (int); |
6044e593 | 5336 | |
347f3cd3 | 5337 | GCPRO1 (object); |
d0d6b7c5 | 5338 | |
6bfd98e7 | 5339 | if (p->raw_status_new) |
6b61353c KH |
5340 | update_status (p); |
5341 | if (! EQ (p->status, Qrun)) | |
5342 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5343 | if (p->outfd < 0) |
6b61353c | 5344 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5345 | |
60f0fb11 | 5346 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5347 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5348 | |
ed7a4b2d KH |
5349 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5350 | || (BUFFERP (object) | |
4b4deea2 | 5351 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5352 | || EQ (object, Qt)) |
278bfdd6 | 5353 | { |
fcaf8878 KH |
5354 | p->encode_coding_system |
5355 | = complement_process_encoding_system (p->encode_coding_system); | |
6b61353c | 5356 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
fcaf8878 KH |
5357 | { |
5358 | /* The coding system for encoding was changed to raw-text | |
5359 | because we sent a unibyte text previously. Now we are | |
5360 | sending a multibyte text, thus we must encode it by the | |
5361 | original coding system specified for the current process. | |
5362 | ||
5363 | Another reason we comming here is that the coding system | |
5364 | was just complemented and new one was returned by | |
5365 | complement_process_encoding_system. */ | |
5366 | setup_coding_system (p->encode_coding_system, coding); | |
5367 | Vlast_coding_system_used = p->encode_coding_system; | |
5368 | } | |
e08bbb84 | 5369 | coding->src_multibyte = 1; |
278bfdd6 KH |
5370 | } |
5371 | else | |
5372 | { | |
a92e4183 KH |
5373 | /* For sending a unibyte text, character code conversion should |
5374 | not take place but EOL conversion should. So, setup raw-text | |
5375 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5376 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5377 | { |
5378 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5379 | { | |
5380 | /* But, before changing the coding, we must flush out data. */ | |
5381 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5382 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5383 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5384 | } |
5bbf78c1 KH |
5385 | setup_coding_system (raw_text_coding_system |
5386 | (Vlast_coding_system_used), | |
5387 | coding); | |
e08bbb84 | 5388 | coding->src_multibyte = 0; |
a92e4183 | 5389 | } |
278bfdd6 | 5390 | } |
a4a37e65 KH |
5391 | coding->dst_multibyte = 0; |
5392 | ||
ed7a4b2d | 5393 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5394 | { |
5bbf78c1 | 5395 | coding->dst_object = Qt; |
ed7a4b2d | 5396 | if (BUFFERP (object)) |
0fa1789e | 5397 | { |
d311d28c PE |
5398 | ptrdiff_t from_byte, from, to; |
5399 | ptrdiff_t save_pt, save_pt_byte; | |
5bbf78c1 KH |
5400 | struct buffer *cur = current_buffer; |
5401 | ||
5402 | set_buffer_internal (XBUFFER (object)); | |
5403 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5404 | ||
400a67ff | 5405 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5406 | from = BYTE_TO_CHAR (from_byte); |
5407 | to = BYTE_TO_CHAR (from_byte + len); | |
5408 | TEMP_SET_PT_BOTH (from, from_byte); | |
5409 | encode_coding_object (coding, object, from, from_byte, | |
5410 | to, from_byte + len, Qt); | |
5411 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5412 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5413 | } |
5414 | else if (STRINGP (object)) | |
5415 | { | |
550c8289 KH |
5416 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5417 | SBYTES (object), Qt); | |
0fa1789e | 5418 | } |
5bbf78c1 | 5419 | else |
452294c2 | 5420 | { |
5bbf78c1 KH |
5421 | coding->dst_object = make_unibyte_string (buf, len); |
5422 | coding->produced = len; | |
452294c2 | 5423 | } |
ed7a4b2d | 5424 | |
e7fbaa65 | 5425 | len = coding->produced; |
347f3cd3 | 5426 | object = coding->dst_object; |
400a67ff | 5427 | buf = SSDATA (object); |
0fa1789e | 5428 | } |
d0d6b7c5 | 5429 | |
4556b700 RS |
5430 | if (pty_max_bytes == 0) |
5431 | { | |
5432 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5433 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5434 | if (pty_max_bytes < 0) |
5435 | pty_max_bytes = 250; | |
5436 | #else | |
5437 | pty_max_bytes = 250; | |
5438 | #endif | |
5439 | /* Deduct one, to leave space for the eof. */ | |
5440 | pty_max_bytes--; | |
5441 | } | |
5442 | ||
0daad115 GM |
5443 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5444 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5445 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5446 | if (!setjmp (send_process_frame)) |
0daad115 | 5447 | { |
006c5daa PE |
5448 | p = XPROCESS (proc); /* Repair any setjmp clobbering. */ |
5449 | ||
0daad115 GM |
5450 | process_sent_to = proc; |
5451 | while (len > 0) | |
5452 | { | |
d311d28c | 5453 | ptrdiff_t this = len; |
93b4f699 | 5454 | |
0daad115 GM |
5455 | /* Send this batch, using one or more write calls. */ |
5456 | while (this > 0) | |
5457 | { | |
d311d28c | 5458 | ptrdiff_t written = 0; |
60f0fb11 | 5459 | int outfd = p->outfd; |
9af30bdf | 5460 | old_sigpipe = (void (*) (int)) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5461 | #ifdef DATAGRAM_SOCKETS |
5462 | if (DATAGRAM_CHAN_P (outfd)) | |
5463 | { | |
400a67ff | 5464 | rv = sendto (outfd, buf, this, |
e690ca94 KS |
5465 | 0, datagram_address[outfd].sa, |
5466 | datagram_address[outfd].len); | |
273a5f82 PE |
5467 | if (0 <= rv) |
5468 | written = rv; | |
5469 | else if (errno == EMSGSIZE) | |
c8f44005 RS |
5470 | { |
5471 | signal (SIGPIPE, old_sigpipe); | |
5472 | report_file_error ("sending datagram", | |
5473 | Fcons (proc, Qnil)); | |
5474 | } | |
e690ca94 KS |
5475 | } |
5476 | else | |
5477 | #endif | |
6b61353c | 5478 | { |
8af55556 | 5479 | #ifdef HAVE_GNUTLS |
df7fcaff | 5480 | if (XPROCESS (proc)->gnutls_p) |
e968f4f3 JB |
5481 | written = emacs_gnutls_write (XPROCESS (proc), |
5482 | buf, this); | |
8af55556 TZ |
5483 | else |
5484 | #endif | |
273a5f82 | 5485 | written = emacs_write (outfd, buf, this); |
086e8c47 | 5486 | rv = (written ? 0 : -1); |
6b61353c | 5487 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
5488 | if (p->read_output_delay > 0 |
5489 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5490 | { |
60f0fb11 | 5491 | p->read_output_delay = 0; |
6b61353c | 5492 | process_output_delay_count--; |
60f0fb11 | 5493 | p->read_output_skip = 0; |
6b61353c KH |
5494 | } |
5495 | #endif | |
5496 | } | |
0daad115 | 5497 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5498 | |
0daad115 GM |
5499 | if (rv < 0) |
5500 | { | |
5501 | if (0 | |
d0d6b7c5 | 5502 | #ifdef EWOULDBLOCK |
0daad115 | 5503 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5504 | #endif |
5505 | #ifdef EAGAIN | |
0daad115 | 5506 | || errno == EAGAIN |
d0d6b7c5 | 5507 | #endif |
0daad115 | 5508 | ) |
177c0ea7 | 5509 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5510 | that may allow the program |
5511 | to finish doing output and read more. */ | |
5512 | { | |
d311d28c | 5513 | ptrdiff_t offset = 0; |
4556b700 | 5514 | |
3433b6bd | 5515 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5516 | /* A gross hack to work around a bug in FreeBSD. |
5517 | In the following sequence, read(2) returns | |
5518 | bogus data: | |
5519 | ||
5520 | write(2) 1022 bytes | |
5521 | write(2) 954 bytes, get EAGAIN | |
5522 | read(2) 1024 bytes in process_read_output | |
5523 | read(2) 11 bytes in process_read_output | |
5524 | ||
5525 | That is, read(2) returns more bytes than have | |
5526 | ever been written successfully. The 1033 bytes | |
5527 | read are the 1022 bytes written successfully | |
5528 | after processing (for example with CRs added if | |
5529 | the terminal is set up that way which it is | |
5530 | here). The same bytes will be seen again in a | |
5531 | later read(2), without the CRs. */ | |
177c0ea7 | 5532 | |
0daad115 GM |
5533 | if (errno == EAGAIN) |
5534 | { | |
5535 | int flags = FWRITE; | |
60f0fb11 | 5536 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5537 | } |
3433b6bd | 5538 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5539 | |
0daad115 GM |
5540 | /* Running filters might relocate buffers or strings. |
5541 | Arrange to relocate BUF. */ | |
347f3cd3 | 5542 | if (BUFFERP (object)) |
400a67ff PE |
5543 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), |
5544 | (unsigned char *) buf); | |
0daad115 | 5545 | else if (STRINGP (object)) |
400a67ff | 5546 | offset = buf - SSDATA (object); |
0daad115 | 5547 | |
f3e6605c | 5548 | #ifdef EMACS_HAS_USECS |
214d6069 | 5549 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5550 | #else |
214d6069 | 5551 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5552 | #endif |
4556b700 | 5553 | |
347f3cd3 | 5554 | if (BUFFERP (object)) |
400a67ff PE |
5555 | buf = (char *) BUF_BYTE_ADDRESS (XBUFFER (object), |
5556 | offset); | |
0daad115 | 5557 | else if (STRINGP (object)) |
400a67ff | 5558 | buf = offset + SSDATA (object); |
0daad115 GM |
5559 | } |
5560 | else | |
5561 | /* This is a real error. */ | |
5562 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5563 | } | |
273a5f82 PE |
5564 | buf += written; |
5565 | len -= written; | |
5566 | this -= written; | |
0daad115 | 5567 | } |
0daad115 GM |
5568 | } |
5569 | } | |
d0d6b7c5 JB |
5570 | else |
5571 | { | |
0ff69270 | 5572 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5573 | proc = process_sent_to; |
6b61353c | 5574 | p = XPROCESS (proc); |
6bfd98e7 | 5575 | p->raw_status_new = 0; |
6b61353c | 5576 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); |
60f0fb11 | 5577 | p->tick = ++process_tick; |
d0d6b7c5 | 5578 | deactivate_process (proc); |
6b61353c | 5579 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5580 | } |
6044e593 RS |
5581 | |
5582 | UNGCPRO; | |
d0d6b7c5 JB |
5583 | } |
5584 | ||
5585 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5586 | 3, 3, 0, |
5587 | doc: /* Send current contents of region as input to PROCESS. | |
5588 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5589 | nil, indicating the current buffer's process. | |
5590 | Called from program, takes three arguments, PROCESS, START and END. | |
5591 | If the region is more than 500 characters long, | |
5592 | it is sent in several bunches. This may happen even for shorter regions. | |
5593 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5594 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5595 | { |
5596 | Lisp_Object proc; | |
d311d28c | 5597 | ptrdiff_t start1, end1; |
d0d6b7c5 JB |
5598 | |
5599 | proc = get_process (process); | |
5600 | validate_region (&start, &end); | |
1b234f64 KH |
5601 | |
5602 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5603 | move_gap (XINT (start)); | |
5604 | ||
5605 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5606 | end1 = CHAR_TO_BYTE (XINT (end)); | |
400a67ff | 5607 | send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1, |
1b234f64 KH |
5608 | Fcurrent_buffer ()); |
5609 | ||
d0d6b7c5 JB |
5610 | return Qnil; |
5611 | } | |
5612 | ||
5613 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5614 | 2, 2, 0, |
5615 | doc: /* Send PROCESS the contents of STRING as input. | |
5616 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5617 | nil, indicating the current buffer's process. | |
5618 | If STRING is more than 500 characters long, | |
5619 | it is sent in several bunches. This may happen even for shorter strings. | |
5620 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5621 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5622 | { |
5623 | Lisp_Object proc; | |
b7826503 | 5624 | CHECK_STRING (string); |
d0d6b7c5 | 5625 | proc = get_process (process); |
400a67ff | 5626 | send_process (proc, SSDATA (string), |
1b234f64 | 5627 | SBYTES (string), string); |
d0d6b7c5 JB |
5628 | return Qnil; |
5629 | } | |
5630 | \f | |
16782258 JD |
5631 | /* Return the foreground process group for the tty/pty that |
5632 | the process P uses. */ | |
5633 | static int | |
d3da34e0 | 5634 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 JD |
5635 | { |
5636 | int gid = -1; | |
5637 | ||
f3d9532b | 5638 | #ifdef TIOCGPGRP |
60f0fb11 | 5639 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5640 | { |
5641 | int fd; | |
5642 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5643 | master side. Try the slave side. */ | |
42a5b22f | 5644 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5645 | |
5646 | if (fd != -1) | |
5647 | { | |
5648 | ioctl (fd, TIOCGPGRP, &gid); | |
5649 | emacs_close (fd); | |
5650 | } | |
5651 | } | |
5652 | #endif /* defined (TIOCGPGRP ) */ | |
5653 | ||
5654 | return gid; | |
5655 | } | |
5656 | ||
b81ea5ef RS |
5657 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5658 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5659 | doc: /* Return t if PROCESS has given the terminal to a child. |
5660 | If the operating system does not make it possible to find out, | |
5661 | return t unconditionally. */) | |
5842a27b | 5662 | (Lisp_Object process) |
b81ea5ef RS |
5663 | { |
5664 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5665 | in a way that will cause returning t. */ | |
16782258 | 5666 | int gid; |
b81ea5ef RS |
5667 | Lisp_Object proc; |
5668 | struct Lisp_Process *p; | |
5669 | ||
5670 | proc = get_process (process); | |
5671 | p = XPROCESS (proc); | |
5672 | ||
d888760c | 5673 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5674 | error ("Process %s is not a subprocess", |
d5db4077 | 5675 | SDATA (p->name)); |
60f0fb11 | 5676 | if (p->infd < 0) |
b81ea5ef | 5677 | error ("Process %s is not active", |
d5db4077 | 5678 | SDATA (p->name)); |
b81ea5ef | 5679 | |
16782258 | 5680 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5681 | |
6bfd98e7 | 5682 | if (gid == p->pid) |
b81ea5ef RS |
5683 | return Qnil; |
5684 | return Qt; | |
5685 | } | |
5686 | \f | |
d0d6b7c5 | 5687 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5688 | If CURRENT_GROUP is t, that means send to the process group |
5689 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5690 | This is used for various commands in shell mode. |
b81ea5ef RS |
5691 | If CURRENT_GROUP is lambda, that means send to the process group |
5692 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5693 | ||
d0d6b7c5 | 5694 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5695 | right away. |
5696 | ||
5697 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5698 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5699 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5700 | |
f9738840 | 5701 | static void |
d3da34e0 JB |
5702 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5703 | int nomsg) | |
d0d6b7c5 JB |
5704 | { |
5705 | Lisp_Object proc; | |
5706 | register struct Lisp_Process *p; | |
5707 | int gid; | |
5708 | int no_pgrp = 0; | |
5709 | ||
5710 | proc = get_process (process); | |
5711 | p = XPROCESS (proc); | |
5712 | ||
d888760c | 5713 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5714 | error ("Process %s is not a subprocess", |
d5db4077 | 5715 | SDATA (p->name)); |
60f0fb11 | 5716 | if (p->infd < 0) |
d0d6b7c5 | 5717 | error ("Process %s is not active", |
d5db4077 | 5718 | SDATA (p->name)); |
d0d6b7c5 | 5719 | |
60f0fb11 | 5720 | if (!p->pty_flag) |
d0d6b7c5 JB |
5721 | current_group = Qnil; |
5722 | ||
d0d6b7c5 | 5723 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5724 | if (NILP (current_group)) |
5725 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5726 | gid = p->pid; |
2af70a0c | 5727 | else |
d0d6b7c5 | 5728 | { |
b0310da4 | 5729 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5730 | /* If possible, send signals to the entire pgrp |
5731 | by sending an input character to it. */ | |
b0310da4 | 5732 | |
6be429b1 | 5733 | struct termios t; |
7f916a36 RS |
5734 | cc_t *sig_char = NULL; |
5735 | ||
60f0fb11 | 5736 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5737 | |
5738 | switch (signo) | |
5739 | { | |
5740 | case SIGINT: | |
7f916a36 RS |
5741 | sig_char = &t.c_cc[VINTR]; |
5742 | break; | |
6be429b1 JB |
5743 | |
5744 | case SIGQUIT: | |
7f916a36 RS |
5745 | sig_char = &t.c_cc[VQUIT]; |
5746 | break; | |
6be429b1 JB |
5747 | |
5748 | case SIGTSTP: | |
d0adf46f | 5749 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5750 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5751 | #else |
7f916a36 | 5752 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5753 | #endif |
7f916a36 | 5754 | break; |
6be429b1 JB |
5755 | } |
5756 | ||
ca4313d5 | 5757 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc | 5758 | { |
f990b4e5 | 5759 | send_process (proc, (char *) sig_char, 1, Qnil); |
f1c206fc RS |
5760 | return; |
5761 | } | |
5762 | /* If we can't send the signal with a character, | |
5763 | fall through and send it another way. */ | |
f1c206fc RS |
5764 | |
5765 | /* The code above may fall through if it can't | |
5766 | handle the signal. */ | |
20505336 | 5767 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5768 | |
177c0ea7 | 5769 | #ifdef TIOCGPGRP |
2af70a0c | 5770 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5771 | Otherwise, use the pty to get the pgrp. |
5772 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5773 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5774 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5775 | His patch indicates that if TIOCGPGRP returns an error, then |
5776 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5777 | |
16782258 | 5778 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5779 | |
16782258 JD |
5780 | if (gid == -1) |
5781 | /* If we can't get the information, assume | |
5782 | the shell owns the tty. */ | |
6bfd98e7 | 5783 | gid = p->pid; |
2af70a0c RS |
5784 | |
5785 | /* It is not clear whether anything really can set GID to -1. | |
5786 | Perhaps on some system one of those ioctls can or could do so. | |
5787 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5788 | if (gid == -1) |
5789 | no_pgrp = 1; | |
b0310da4 | 5790 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5791 | /* Can't select pgrps on this system, so we know that |
5792 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5793 | gid = p->pid; |
301c3fe4 | 5794 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5795 | |
5796 | /* If current_group is lambda, and the shell owns the terminal, | |
5797 | don't send any signal. */ | |
6bfd98e7 | 5798 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5799 | return; |
d0d6b7c5 | 5800 | } |
d0d6b7c5 JB |
5801 | |
5802 | switch (signo) | |
5803 | { | |
5804 | #ifdef SIGCONT | |
5805 | case SIGCONT: | |
6bfd98e7 | 5806 | p->raw_status_new = 0; |
d0d6b7c5 | 5807 | p->status = Qrun; |
60f0fb11 | 5808 | p->tick = ++process_tick; |
d0d6b7c5 | 5809 | if (!nomsg) |
e42bdf01 CY |
5810 | { |
5811 | status_notify (NULL); | |
5812 | redisplay_preserve_echo_area (13); | |
5813 | } | |
d0d6b7c5 | 5814 | break; |
301c3fe4 | 5815 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 5816 | case SIGINT: |
d0d6b7c5 | 5817 | case SIGQUIT: |
d0d6b7c5 | 5818 | case SIGKILL: |
60f0fb11 | 5819 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5820 | break; |
5821 | } | |
5822 | ||
5823 | /* If we don't have process groups, send the signal to the immediate | |
5824 | subprocess. That isn't really right, but it's better than any | |
5825 | obvious alternative. */ | |
5826 | if (no_pgrp) | |
5827 | { | |
6bfd98e7 | 5828 | kill (p->pid, signo); |
d0d6b7c5 JB |
5829 | return; |
5830 | } | |
5831 | ||
5832 | /* gid may be a pid, or minus a pgrp's number */ | |
5833 | #ifdef TIOCSIGSEND | |
5834 | if (!NILP (current_group)) | |
16782258 | 5835 | { |
60f0fb11 | 5836 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
5837 | EMACS_KILLPG (gid, signo); |
5838 | } | |
d0d6b7c5 JB |
5839 | else |
5840 | { | |
6bfd98e7 | 5841 | gid = - p->pid; |
d0d6b7c5 JB |
5842 | kill (gid, signo); |
5843 | } | |
301c3fe4 | 5844 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5845 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5846 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5847 | } |
5848 | ||
5849 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5850 | doc: /* Interrupt process PROCESS. |
5851 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5852 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5853 | Second arg CURRENT-GROUP non-nil means send signal to |
5854 | the current process-group of the process's controlling terminal | |
5855 | rather than to the process's own process group. | |
5856 | If the process is a shell, this means interrupt current subjob | |
5857 | rather than the shell. | |
5858 | ||
5859 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5860 | don't send the signal. */) | |
5842a27b | 5861 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5862 | { |
5863 | process_send_signal (process, SIGINT, current_group, 0); | |
5864 | return process; | |
5865 | } | |
5866 | ||
5867 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5868 | doc: /* Kill process PROCESS. May be process or name of one. |
5869 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5870 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5871 | { |
5872 | process_send_signal (process, SIGKILL, current_group, 0); | |
5873 | return process; | |
5874 | } | |
5875 | ||
5876 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5877 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5878 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5879 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5880 | { |
5881 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5882 | return process; | |
5883 | } | |
5884 | ||
5885 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5886 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5887 | See function `interrupt-process' for more details on usage. |
d888760c GM |
5888 | If PROCESS is a network or serial process, inhibit handling of incoming |
5889 | traffic. */) | |
5842a27b | 5890 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 5891 | { |
d888760c | 5892 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
5893 | { |
5894 | struct Lisp_Process *p; | |
177c0ea7 | 5895 | |
e690ca94 KS |
5896 | p = XPROCESS (process); |
5897 | if (NILP (p->command) | |
60f0fb11 | 5898 | && p->infd >= 0) |
e690ca94 | 5899 | { |
60f0fb11 SM |
5900 | FD_CLR (p->infd, &input_wait_mask); |
5901 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
5902 | } |
5903 | p->command = Qt; | |
5904 | return process; | |
5905 | } | |
d0d6b7c5 | 5906 | #ifndef SIGTSTP |
a9a73d6c | 5907 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
5908 | #else |
5909 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5910 | #endif | |
5911 | return process; | |
5912 | } | |
5913 | ||
5914 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5915 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5916 | See function `interrupt-process' for more details on usage. |
d888760c GM |
5917 | If PROCESS is a network or serial process, resume handling of incoming |
5918 | traffic. */) | |
5842a27b | 5919 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 5920 | { |
d888760c | 5921 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
5922 | { |
5923 | struct Lisp_Process *p; | |
5924 | ||
5925 | p = XPROCESS (process); | |
5926 | if (EQ (p->command, Qt) | |
60f0fb11 | 5927 | && p->infd >= 0 |
e690ca94 KS |
5928 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
5929 | { | |
60f0fb11 SM |
5930 | FD_SET (p->infd, &input_wait_mask); |
5931 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
5932 | #ifdef WINDOWSNT |
5933 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
5934 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 5935 | #else /* not WINDOWSNT */ |
d888760c | 5936 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 5937 | #endif /* not WINDOWSNT */ |
e690ca94 KS |
5938 | } |
5939 | p->command = Qnil; | |
5940 | return process; | |
5941 | } | |
d0d6b7c5 JB |
5942 | #ifdef SIGCONT |
5943 | process_send_signal (process, SIGCONT, current_group, 0); | |
5944 | #else | |
a9a73d6c | 5945 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
5946 | #endif |
5947 | return process; | |
5948 | } | |
5949 | ||
5950 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
5951 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
5952 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 5953 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
5954 | process to signal; in this case, the process need not be a child of |
5955 | this Emacs. | |
fdb82f93 | 5956 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 5957 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 5958 | { |
6bfd98e7 | 5959 | pid_t pid; |
cdd5ea86 | 5960 | |
cdd5ea86 KS |
5961 | if (STRINGP (process)) |
5962 | { | |
d311d28c PE |
5963 | Lisp_Object tem = Fget_process (process); |
5964 | if (NILP (tem)) | |
cdd5ea86 | 5965 | { |
d44287d4 PE |
5966 | Lisp_Object process_number = |
5967 | string_to_number (SSDATA (process), 10, 1); | |
5968 | if (INTEGERP (process_number) || FLOATP (process_number)) | |
5969 | tem = process_number; | |
cdd5ea86 KS |
5970 | } |
5971 | process = tem; | |
5972 | } | |
d44287d4 | 5973 | else if (!NUMBERP (process)) |
cdd5ea86 | 5974 | process = get_process (process); |
177c0ea7 | 5975 | |
cdd5ea86 KS |
5976 | if (NILP (process)) |
5977 | return process; | |
5978 | ||
d44287d4 PE |
5979 | if (INTEGERP (process)) |
5980 | { | |
5981 | EMACS_INT v = XINT (process); | |
5982 | if (! (TYPE_MINIMUM (pid_t) <= v && v <= TYPE_MAXIMUM (pid_t))) | |
5983 | return make_number (-1); | |
5984 | pid = v; | |
5985 | } | |
5986 | else if (FLOATP (process)) | |
5987 | { | |
5988 | double v = XFLOAT_DATA (process); | |
5989 | if (! (TYPE_MINIMUM (pid_t) <= v && v < TYPE_MAXIMUM (pid_t) + 1.0)) | |
5990 | return make_number (-1); | |
5991 | pid = v; | |
5992 | if (pid != v) | |
5993 | return make_number (-1); | |
5994 | } | |
5995 | else | |
5996 | { | |
5997 | CHECK_PROCESS (process); | |
5998 | pid = XPROCESS (process)->pid; | |
5999 | if (pid <= 0) | |
6000 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); | |
6001 | } | |
4766242d | 6002 | |
59324b1d | 6003 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6004 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6005 | XSETINT (sigcode, VALUE) |
6006 | ||
6007 | if (INTEGERP (sigcode)) | |
d311d28c | 6008 | CHECK_TYPE_RANGED_INTEGER (int, sigcode); |
4766242d RS |
6009 | else |
6010 | { | |
25a48bd0 | 6011 | char *name; |
4766242d | 6012 | |
b7826503 | 6013 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6014 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6015 | |
ed3751c8 | 6016 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6017 | name += 3; |
6018 | ||
4766242d RS |
6019 | if (0) |
6020 | ; | |
59324b1d KS |
6021 | #ifdef SIGUSR1 |
6022 | parse_signal ("usr1", SIGUSR1); | |
6023 | #endif | |
6024 | #ifdef SIGUSR2 | |
6025 | parse_signal ("usr2", SIGUSR2); | |
6026 | #endif | |
6027 | #ifdef SIGTERM | |
6028 | parse_signal ("term", SIGTERM); | |
6029 | #endif | |
4766242d | 6030 | #ifdef SIGHUP |
59324b1d | 6031 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6032 | #endif |
6033 | #ifdef SIGINT | |
59324b1d | 6034 | parse_signal ("int", SIGINT); |
4766242d RS |
6035 | #endif |
6036 | #ifdef SIGQUIT | |
59324b1d | 6037 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6038 | #endif |
6039 | #ifdef SIGILL | |
59324b1d | 6040 | parse_signal ("ill", SIGILL); |
4766242d RS |
6041 | #endif |
6042 | #ifdef SIGABRT | |
59324b1d | 6043 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6044 | #endif |
6045 | #ifdef SIGEMT | |
59324b1d | 6046 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6047 | #endif |
6048 | #ifdef SIGKILL | |
59324b1d | 6049 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6050 | #endif |
6051 | #ifdef SIGFPE | |
59324b1d | 6052 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6053 | #endif |
6054 | #ifdef SIGBUS | |
59324b1d | 6055 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6056 | #endif |
6057 | #ifdef SIGSEGV | |
59324b1d | 6058 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6059 | #endif |
6060 | #ifdef SIGSYS | |
59324b1d | 6061 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6062 | #endif |
6063 | #ifdef SIGPIPE | |
59324b1d | 6064 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6065 | #endif |
6066 | #ifdef SIGALRM | |
59324b1d | 6067 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6068 | #endif |
6069 | #ifdef SIGURG | |
59324b1d | 6070 | parse_signal ("urg", SIGURG); |
4766242d RS |
6071 | #endif |
6072 | #ifdef SIGSTOP | |
59324b1d | 6073 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6074 | #endif |
6075 | #ifdef SIGTSTP | |
59324b1d | 6076 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6077 | #endif |
6078 | #ifdef SIGCONT | |
59324b1d | 6079 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6080 | #endif |
6081 | #ifdef SIGCHLD | |
59324b1d | 6082 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6083 | #endif |
6084 | #ifdef SIGTTIN | |
59324b1d | 6085 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6086 | #endif |
6087 | #ifdef SIGTTOU | |
59324b1d | 6088 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6089 | #endif |
6090 | #ifdef SIGIO | |
59324b1d | 6091 | parse_signal ("io", SIGIO); |
4766242d RS |
6092 | #endif |
6093 | #ifdef SIGXCPU | |
59324b1d | 6094 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6095 | #endif |
6096 | #ifdef SIGXFSZ | |
59324b1d | 6097 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6098 | #endif |
6099 | #ifdef SIGVTALRM | |
59324b1d | 6100 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6101 | #endif |
6102 | #ifdef SIGPROF | |
59324b1d | 6103 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6104 | #endif |
6105 | #ifdef SIGWINCH | |
59324b1d | 6106 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6107 | #endif |
6108 | #ifdef SIGINFO | |
59324b1d | 6109 | parse_signal ("info", SIGINFO); |
4766242d RS |
6110 | #endif |
6111 | else | |
9fa195a2 | 6112 | error ("Undefined signal name %s", name); |
4766242d RS |
6113 | } |
6114 | ||
59324b1d | 6115 | #undef parse_signal |
4766242d | 6116 | |
6bfd98e7 | 6117 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6118 | } |
6119 | ||
6120 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6121 | doc: /* Make PROCESS see end-of-file in its input. |
6122 | EOF comes after any text already sent to it. | |
6123 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6124 | nil, indicating the current buffer's process. | |
6125 | If PROCESS is a network connection, or is a process communicating | |
6126 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6127 | text to PROCESS after you call this function. |
6128 | If PROCESS is a serial process, wait until all output written to the | |
6129 | process has been transmitted to the serial port. */) | |
5842a27b | 6130 | (Lisp_Object process) |
d0d6b7c5 JB |
6131 | { |
6132 | Lisp_Object proc; | |
de7fbd09 | 6133 | struct coding_system *coding; |
d0d6b7c5 | 6134 | |
e690ca94 KS |
6135 | if (DATAGRAM_CONN_P (process)) |
6136 | return process; | |
6137 | ||
d0d6b7c5 | 6138 | proc = get_process (process); |
60f0fb11 | 6139 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6140 | |
6141 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6142 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 RS |
6143 | update_status (XPROCESS (proc)); |
6144 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6145 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6146 | |
de7fbd09 KH |
6147 | if (CODING_REQUIRE_FLUSHING (coding)) |
6148 | { | |
6149 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6150 | send_process (proc, "", 0, Qnil); | |
6151 | } | |
6152 | ||
60f0fb11 | 6153 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6154 | send_process (proc, "\004", 1, Qnil); |
a879ee6f | 6155 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6156 | { |
a7ebc409 | 6157 | #ifndef WINDOWSNT |
d888760c GM |
6158 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6159 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6160 | #endif /* not WINDOWSNT */ |
d888760c GM |
6161 | /* Do nothing on Windows because writes are blocking. */ |
6162 | } | |
d0d6b7c5 JB |
6163 | else |
6164 | { | |
4525f571 RS |
6165 | int old_outfd, new_outfd; |
6166 | ||
93853f3d | 6167 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6168 | /* If this is a network connection, or socketpair is used |
6169 | for communication with the subprocess, call shutdown to cause EOF. | |
6170 | (In some old system, shutdown to socketpair doesn't work. | |
6171 | Then we just can't win.) */ | |
a879ee6f | 6172 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6173 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6174 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6175 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6176 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6177 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6178 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6179 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6180 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6181 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6182 | if (new_outfd < 0) |
6183 | abort (); | |
60f0fb11 | 6184 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6185 | |
6186 | if (!proc_encode_coding_system[new_outfd]) | |
6187 | proc_encode_coding_system[new_outfd] | |
6188 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
72af86bd AS |
6189 | memcpy (proc_encode_coding_system[new_outfd], |
6190 | proc_encode_coding_system[old_outfd], | |
6191 | sizeof (struct coding_system)); | |
6192 | memset (proc_encode_coding_system[old_outfd], 0, | |
6193 | sizeof (struct coding_system)); | |
4525f571 | 6194 | |
60f0fb11 | 6195 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6196 | } |
d0d6b7c5 JB |
6197 | return process; |
6198 | } | |
d0d6b7c5 | 6199 | \f |
3fed8ad5 GM |
6200 | /* On receipt of a signal that a child status has changed, loop asking |
6201 | about children with changed statuses until the system says there | |
6202 | are no more. | |
177c0ea7 | 6203 | |
3fed8ad5 GM |
6204 | All we do is change the status; we do not run sentinels or print |
6205 | notifications. That is saved for the next time keyboard input is | |
6206 | done, in order to avoid timing errors. | |
6207 | ||
6208 | ** WARNING: this can be called during garbage collection. | |
6209 | Therefore, it must not be fooled by the presence of mark bits in | |
6210 | Lisp objects. | |
6211 | ||
6212 | ** USG WARNING: Although it is not obvious from the documentation | |
6213 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6214 | signal() before executing at least one wait(), otherwise the | |
6215 | handler will be called again, resulting in an infinite loop. The | |
6216 | relevant portion of the documentation reads "SIGCLD signals will be | |
6217 | queued and the signal-catching function will be continually | |
6218 | reentered until the queue is empty". Invoking signal() causes the | |
6219 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6220 | Inc. |
6221 | ||
6222 | ** Malloc WARNING: This should never call malloc either directly or | |
6223 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6224 | |
a5cfdda8 | 6225 | #ifdef SIGCHLD |
9af30bdf | 6226 | static void |
d3da34e0 | 6227 | sigchld_handler (int signo) |
d0d6b7c5 JB |
6228 | { |
6229 | int old_errno = errno; | |
6230 | Lisp_Object proc; | |
97ec208f | 6231 | struct Lisp_Process *p; |
d0d6b7c5 | 6232 | |
333f1b6f JD |
6233 | SIGNAL_THREAD_CHECK (signo); |
6234 | ||
d0d6b7c5 JB |
6235 | while (1) |
6236 | { | |
8e050977 | 6237 | pid_t pid; |
bba104c1 | 6238 | int w; |
d0d6b7c5 JB |
6239 | Lisp_Object tail; |
6240 | ||
6241 | #ifdef WNOHANG | |
6242 | #ifndef WUNTRACED | |
6243 | #define WUNTRACED 0 | |
6244 | #endif /* no WUNTRACED */ | |
6245 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 | 6246 | do |
63136da6 | 6247 | { |
29ed4d51 CY |
6248 | errno = 0; |
6249 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
29ed4d51 | 6250 | } |
e7d4a904 | 6251 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6252 | |
6253 | if (pid <= 0) | |
6254 | { | |
3fed8ad5 GM |
6255 | /* PID == 0 means no processes found, PID == -1 means a real |
6256 | failure. We have done all our job, so return. */ | |
d0d6b7c5 | 6257 | |
d0d6b7c5 JB |
6258 | errno = old_errno; |
6259 | return; | |
6260 | } | |
6261 | #else | |
6262 | pid = wait (&w); | |
6263 | #endif /* no WNOHANG */ | |
6264 | ||
6265 | /* Find the process that signaled us, and record its status. */ | |
6266 | ||
a5cfdda8 | 6267 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6268 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6269 | { |
8e050977 | 6270 | Lisp_Object xpid = XCAR (tail); |
d311d28c PE |
6271 | if ((INTEGERP (xpid) && pid == XINT (xpid)) |
6272 | || (FLOATP (xpid) && pid == XFLOAT_DATA (xpid))) | |
8e050977 CY |
6273 | { |
6274 | XSETCAR (tail, Qnil); | |
6275 | goto sigchld_end_of_loop; | |
6276 | } | |
a5cfdda8 KS |
6277 | } |
6278 | ||
6279 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6280 | p = 0; |
8e50cc2d | 6281 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6282 | { |
70949dac | 6283 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6284 | p = XPROCESS (proc); |
d888760c | 6285 | if (EQ (p->type, Qreal) && p->pid == pid) |
d0d6b7c5 JB |
6286 | break; |
6287 | p = 0; | |
6288 | } | |
6289 | ||
6290 | /* Look for an asynchronous process whose pid hasn't been filled | |
6291 | in yet. */ | |
6292 | if (p == 0) | |
8e50cc2d | 6293 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6294 | { |
70949dac | 6295 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6296 | p = XPROCESS (proc); |
6bfd98e7 | 6297 | if (p->pid == -1) |
d0d6b7c5 JB |
6298 | break; |
6299 | p = 0; | |
6300 | } | |
177c0ea7 | 6301 | |
d0d6b7c5 JB |
6302 | /* Change the status of the process that was found. */ |
6303 | if (p != 0) | |
6304 | { | |
e98d950b | 6305 | int clear_desc_flag = 0; |
177c0ea7 | 6306 | |
60f0fb11 | 6307 | p->tick = ++process_tick; |
bba104c1 | 6308 | p->raw_status = w; |
6bfd98e7 | 6309 | p->raw_status_new = 1; |
177c0ea7 | 6310 | |
d0d6b7c5 | 6311 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6312 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6313 | && p->infd >= 0) |
e98d950b RS |
6314 | clear_desc_flag = 1; |
6315 | ||
6316 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6317 | if (clear_desc_flag) | |
6318 | { | |
60f0fb11 SM |
6319 | FD_CLR (p->infd, &input_wait_mask); |
6320 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6321 | } |
6be429b1 | 6322 | |
214d6069 | 6323 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6324 | look around. */ |
6325 | if (input_available_clear_time) | |
6326 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6327 | } |
6328 | ||
a5cfdda8 KS |
6329 | /* There was no asynchronous process found for that pid: we have |
6330 | a synchronous process. */ | |
d0d6b7c5 JB |
6331 | else |
6332 | { | |
6333 | synch_process_alive = 0; | |
6334 | ||
6335 | /* Report the status of the synchronous process. */ | |
6336 | if (WIFEXITED (w)) | |
6337 | synch_process_retcode = WRETCODE (w); | |
6338 | else if (WIFSIGNALED (w)) | |
63136da6 | 6339 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6340 | |
214d6069 | 6341 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6342 | look around. */ |
6343 | if (input_available_clear_time) | |
6344 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6345 | } |
6346 | ||
a5cfdda8 KS |
6347 | sigchld_end_of_loop: |
6348 | ; | |
6349 | ||
d0d6b7c5 JB |
6350 | /* On some systems, we must return right away. |
6351 | If any more processes want to signal us, we will | |
6352 | get another signal. | |
6353 | Otherwise (on systems that have WNOHANG), loop around | |
6354 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6355 | #if (defined WINDOWSNT \ |
8a2a6032 | 6356 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6357 | && !(defined HPUX && defined WNOHANG))) |
d0d6b7c5 JB |
6358 | errno = old_errno; |
6359 | return; | |
6360 | #endif /* USG, but not HPUX with WNOHANG */ | |
6361 | } | |
6362 | } | |
a5cfdda8 | 6363 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6364 | \f |
6365 | ||
6366 | static Lisp_Object | |
d3da34e0 | 6367 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6368 | { |
70949dac | 6369 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6370 | return Qnil; |
6371 | } | |
6372 | ||
3b9a3dfa | 6373 | static Lisp_Object |
b93aacde | 6374 | exec_sentinel_error_handler (Lisp_Object error_val) |
3b9a3dfa | 6375 | { |
b93aacde | 6376 | cmd_error_internal (error_val, "error in process sentinel: "); |
3b9a3dfa RS |
6377 | Vinhibit_quit = Qt; |
6378 | update_echo_area (); | |
833ba342 | 6379 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6380 | return Qt; |
3b9a3dfa RS |
6381 | } |
6382 | ||
d0d6b7c5 | 6383 | static void |
d3da34e0 | 6384 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6385 | { |
aba7731a | 6386 | Lisp_Object sentinel, odeactivate; |
d0d6b7c5 | 6387 | register struct Lisp_Process *p = XPROCESS (proc); |
d311d28c | 6388 | ptrdiff_t count = SPECPDL_INDEX (); |
4da2f5be | 6389 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6390 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6391 | |
84af9896 RS |
6392 | if (inhibit_sentinels) |
6393 | return; | |
6394 | ||
dfc21838 RS |
6395 | /* No need to gcpro these, because all we do with them later |
6396 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6397 | odeactivate = Vdeactivate_mark; |
aba7731a PE |
6398 | #if 0 |
6399 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 6400 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6401 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 6402 | #endif |
dfc21838 | 6403 | |
97e53006 SM |
6404 | /* There's no good reason to let sentinels change the current |
6405 | buffer, and many callers of accept-process-output, sit-for, and | |
6406 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 6407 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
97e53006 | 6408 | |
d0d6b7c5 JB |
6409 | sentinel = p->sentinel; |
6410 | if (NILP (sentinel)) | |
6411 | return; | |
6412 | ||
6413 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6414 | assure that it gets restored no matter how the sentinel exits. */ | |
6415 | p->sentinel = Qnil; | |
6416 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6417 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6418 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6419 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6420 | |
4da2f5be RS |
6421 | /* In case we get recursively called, |
6422 | and we already saved the match data nonrecursively, | |
6423 | save the same match data in safely recursive fashion. */ | |
6424 | if (outer_running_asynch_code) | |
6425 | { | |
6426 | Lisp_Object tem; | |
89f2614d KS |
6427 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6428 | restore_search_regs (); | |
6429 | record_unwind_save_match_data (); | |
6430 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6431 | } |
6432 | ||
6433 | /* For speed, if a search happens within this code, | |
6434 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6435 | running_asynch_code = 1; |
4da2f5be | 6436 | |
3b9a3dfa RS |
6437 | internal_condition_case_1 (read_process_output_call, |
6438 | Fcons (sentinel, | |
6439 | Fcons (proc, Fcons (reason, Qnil))), | |
6440 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6441 | exec_sentinel_error_handler); | |
4da2f5be RS |
6442 | |
6443 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6444 | restore_search_regs (); |
4da2f5be | 6445 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6446 | |
6447 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6448 | |
6449 | /* Restore waiting_for_user_input_p as it was | |
6450 | when we were called, in case the filter clobbered it. */ | |
6451 | waiting_for_user_input_p = waiting; | |
6452 | ||
7973cfa8 | 6453 | #if 0 |
dfc21838 RS |
6454 | if (! EQ (Fcurrent_buffer (), obuffer) |
6455 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6456 | #endif |
927e08be RS |
6457 | /* But do it only if the caller is actually going to read events. |
6458 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6459 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6460 | if (waiting_for_user_input_p == -1) |
6461 | record_asynch_buffer_change (); | |
8fb3cf64 | 6462 | |
2ea6d561 | 6463 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6464 | } |
6465 | ||
6466 | /* Report all recent events of a change in process status | |
6467 | (either run the sentinel or output a message). | |
b50fe468 RS |
6468 | This is usually done while Emacs is waiting for keyboard input |
6469 | but can be done at other times. */ | |
d0d6b7c5 | 6470 | |
ff6daed3 | 6471 | static void |
d3da34e0 | 6472 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6473 | { |
6474 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6475 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6476 | struct gcpro gcpro1, gcpro2; |
6477 | ||
2e4149a8 KH |
6478 | tail = Qnil; |
6479 | msg = Qnil; | |
d0d6b7c5 JB |
6480 | /* We need to gcpro tail; if read_process_output calls a filter |
6481 | which deletes a process and removes the cons to which tail points | |
6482 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6483 | reference. */ | |
6484 | GCPRO2 (tail, msg); | |
6485 | ||
30623085 RS |
6486 | /* Set this now, so that if new processes are created by sentinels |
6487 | that we run, we get called again to handle their status changes. */ | |
6488 | update_tick = process_tick; | |
6489 | ||
99784d63 | 6490 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6491 | { |
30623085 RS |
6492 | Lisp_Object symbol; |
6493 | register struct Lisp_Process *p; | |
6494 | ||
99784d63 | 6495 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6496 | p = XPROCESS (proc); |
6497 | ||
60f0fb11 | 6498 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6499 | { |
60f0fb11 | 6500 | p->update_tick = p->tick; |
d0d6b7c5 | 6501 | |
30623085 | 6502 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6503 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6504 | && ! EQ (p->status, Qconnect) |
e690ca94 | 6505 | && ! EQ (p->status, Qlisten) |
d888760c GM |
6506 | /* Network or serial process not stopped: */ |
6507 | && ! EQ (p->command, Qt) | |
60f0fb11 | 6508 | && p->infd >= 0 |
ff6daed3 | 6509 | && p != deleting_process |
60f0fb11 | 6510 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6511 | |
30623085 | 6512 | buffer = p->buffer; |
d0d6b7c5 | 6513 | |
30623085 | 6514 | /* Get the text to use for the message. */ |
6bfd98e7 | 6515 | if (p->raw_status_new) |
30623085 | 6516 | update_status (p); |
116c423c | 6517 | msg = status_message (p); |
d0d6b7c5 | 6518 | |
30623085 RS |
6519 | /* If process is terminated, deactivate it or delete it. */ |
6520 | symbol = p->status; | |
6521 | if (CONSP (p->status)) | |
70949dac | 6522 | symbol = XCAR (p->status); |
d0d6b7c5 | 6523 | |
30623085 RS |
6524 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6525 | || EQ (symbol, Qclosed)) | |
6526 | { | |
6527 | if (delete_exited_processes) | |
6528 | remove_process (proc); | |
6529 | else | |
6530 | deactivate_process (proc); | |
6531 | } | |
d0d6b7c5 | 6532 | |
0ad61fe7 RS |
6533 | /* The actions above may have further incremented p->tick. |
6534 | So set p->update_tick again | |
6535 | so that an error in the sentinel will not cause | |
6536 | this code to be run again. */ | |
60f0fb11 | 6537 | p->update_tick = p->tick; |
30623085 RS |
6538 | /* Now output the message suitably. */ |
6539 | if (!NILP (p->sentinel)) | |
6540 | exec_sentinel (proc, msg); | |
6541 | /* Don't bother with a message in the buffer | |
6542 | when a process becomes runnable. */ | |
6543 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6544 | { | |
01f5787b | 6545 | Lisp_Object tem; |
30623085 | 6546 | struct buffer *old = current_buffer; |
d311d28c PE |
6547 | ptrdiff_t opoint, opoint_byte; |
6548 | ptrdiff_t before, before_byte; | |
2e4149a8 | 6549 | |
30623085 RS |
6550 | /* Avoid error if buffer is deleted |
6551 | (probably that's why the process is dead, too) */ | |
4b4deea2 | 6552 | if (NILP (BVAR (XBUFFER (buffer), name))) |
30623085 RS |
6553 | continue; |
6554 | Fset_buffer (buffer); | |
12ca5cdf | 6555 | |
6ec8bbd2 | 6556 | opoint = PT; |
d8a2934e | 6557 | opoint_byte = PT_BYTE; |
30623085 RS |
6558 | /* Insert new output into buffer |
6559 | at the current end-of-output marker, | |
6560 | thus preserving logical ordering of input and output. */ | |
6561 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6562 | Fgoto_char (p->mark); |
30623085 | 6563 | else |
d8a2934e | 6564 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6565 | |
6566 | before = PT; | |
d8a2934e | 6567 | before_byte = PT_BYTE; |
30623085 | 6568 | |
4b4deea2 TT |
6569 | tem = BVAR (current_buffer, read_only); |
6570 | BVAR (current_buffer, read_only) = Qnil; | |
30623085 RS |
6571 | insert_string ("\nProcess "); |
6572 | Finsert (1, &p->name); | |
6573 | insert_string (" "); | |
6574 | Finsert (1, &msg); | |
4b4deea2 | 6575 | BVAR (current_buffer, read_only) = tem; |
d8a2934e | 6576 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6577 | |
12ca5cdf | 6578 | if (opoint >= before) |
d8a2934e RS |
6579 | SET_PT_BOTH (opoint + (PT - before), |
6580 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6581 | else |
d8a2934e | 6582 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6583 | |
30623085 | 6584 | set_buffer_internal (old); |
d0d6b7c5 | 6585 | } |
30623085 RS |
6586 | } |
6587 | } /* end for */ | |
d0d6b7c5 JB |
6588 | |
6589 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6590 | UNGCPRO; |
6591 | } | |
0fa1789e KH |
6592 | |
6593 | \f | |
6594 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6595 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6596 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6597 | DECODING will be used to decode subprocess output and ENCODING to | |
6598 | encode subprocess input. */) | |
5842a27b | 6599 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6600 | { |
6601 | register struct Lisp_Process *p; | |
6602 | ||
f3d9532b JB |
6603 | CHECK_PROCESS (process); |
6604 | p = XPROCESS (process); | |
60f0fb11 | 6605 | if (p->infd < 0) |
d5db4077 | 6606 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6607 | if (p->outfd < 0) |
d5db4077 | 6608 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6609 | Fcheck_coding_system (decoding); |
6610 | Fcheck_coding_system (encoding); | |
76d812bb | 6611 | encoding = coding_inherit_eol_type (encoding, Qnil); |
03f04413 KH |
6612 | p->decode_coding_system = decoding; |
6613 | p->encode_coding_system = encoding; | |
f3d9532b | 6614 | setup_process_coding_systems (process); |
0fa1789e KH |
6615 | |
6616 | return Qnil; | |
6617 | } | |
6618 | ||
6619 | DEFUN ("process-coding-system", | |
6620 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6621 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6622 | (register Lisp_Object process) |
0fa1789e | 6623 | { |
f3d9532b JB |
6624 | CHECK_PROCESS (process); |
6625 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6626 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6627 | } |
03f04413 KH |
6628 | |
6629 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6630 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6631 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6632 | If FLAG is non-nil, the filter is given multibyte strings. | |
6633 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6634 | all character code conversion except for end-of-line conversion is |
6635 | suppressed. */) | |
5842a27b | 6636 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6637 | { |
6638 | register struct Lisp_Process *p; | |
6639 | ||
f3d9532b JB |
6640 | CHECK_PROCESS (process); |
6641 | p = XPROCESS (process); | |
5431bd6a SM |
6642 | if (NILP (flag)) |
6643 | p->decode_coding_system = raw_text_coding_system (p->decode_coding_system); | |
f3d9532b | 6644 | setup_process_coding_systems (process); |
03f04413 KH |
6645 | |
6646 | return Qnil; | |
6647 | } | |
6648 | ||
6649 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6650 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6651 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6652 | (Lisp_Object process) |
03f04413 KH |
6653 | { |
6654 | register struct Lisp_Process *p; | |
5431bd6a | 6655 | struct coding_system *coding; |
03f04413 | 6656 | |
f3d9532b JB |
6657 | CHECK_PROCESS (process); |
6658 | p = XPROCESS (process); | |
5431bd6a SM |
6659 | coding = proc_decode_coding_system[p->infd]; |
6660 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6661 | } |
6662 | ||
6663 | ||
d0d6b7c5 | 6664 | \f |
cb768704 | 6665 | |
4475bec4 PE |
6666 | # ifdef HAVE_GPM |
6667 | ||
994d9841 | 6668 | void |
d3da34e0 | 6669 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6670 | { |
3fad2ad2 | 6671 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6672 | } |
6673 | ||
994d9841 | 6674 | void |
d3da34e0 | 6675 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6676 | { |
3fad2ad2 | 6677 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6678 | } |
6679 | ||
4475bec4 PE |
6680 | # endif |
6681 | ||
006c5daa PE |
6682 | # ifdef SIGIO |
6683 | ||
a69281ff RS |
6684 | /* Return nonzero if *MASK has a bit set |
6685 | that corresponds to one of the keyboard input descriptors. */ | |
6686 | ||
ff6daed3 | 6687 | static int |
d3da34e0 | 6688 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6689 | { |
6690 | int fd; | |
6691 | ||
3fad2ad2 | 6692 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6693 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6694 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6695 | return 1; | |
6696 | ||
6697 | return 0; | |
6698 | } | |
006c5daa | 6699 | # endif |
934e2a68 | 6700 | |
f388c88a | 6701 | #else /* not subprocesses */ |
934e2a68 | 6702 | |
f388c88a EZ |
6703 | /* Defined on msdos.c. */ |
6704 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
6705 | EMACS_TIME *); | |
934e2a68 | 6706 | |
f388c88a EZ |
6707 | /* Implementation of wait_reading_process_output, assuming that there |
6708 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6709 | |
f388c88a | 6710 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6711 | |
f388c88a EZ |
6712 | time_limit is: |
6713 | timeout in seconds, or | |
6714 | zero for no limit, or | |
6715 | -1 means gobble data immediately available but don't wait for any. | |
934e2a68 | 6716 | |
f388c88a EZ |
6717 | read_kbd is a Lisp_Object: |
6718 | 0 to ignore keyboard input, or | |
6719 | 1 to return when input is available, or | |
6720 | -1 means caller will actually read the input, so don't throw to | |
6721 | the quit handler. | |
934e2a68 | 6722 | |
f388c88a EZ |
6723 | see full version for other parameters. We know that wait_proc will |
6724 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6725 | |
f388c88a EZ |
6726 | do_display != 0 means redisplay should be done to show subprocess |
6727 | output that arrives. | |
934e2a68 | 6728 | |
f388c88a EZ |
6729 | Return true if we received input from any process. */ |
6730 | ||
6731 | int | |
1408902e EZ |
6732 | wait_reading_process_output (int time_limit, int microsecs, int read_kbd, |
6733 | int do_display, | |
6734 | Lisp_Object wait_for_cell, | |
6735 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6736 | { |
f388c88a EZ |
6737 | register int nfds; |
6738 | EMACS_TIME end_time, timeout; | |
6739 | SELECT_TYPE waitchannels; | |
6740 | int xerrno; | |
d0d6b7c5 | 6741 | |
f388c88a EZ |
6742 | /* What does time_limit really mean? */ |
6743 | if (time_limit || microsecs) | |
6744 | { | |
6745 | EMACS_GET_TIME (end_time); | |
6746 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
6747 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
6748 | } | |
84af9896 | 6749 | |
f388c88a EZ |
6750 | /* Turn off periodic alarms (in case they are in use) |
6751 | and then turn off any other atimers, | |
6752 | because the select emulator uses alarms. */ | |
6753 | stop_polling (); | |
6754 | turn_on_atimers (0); | |
d0d6b7c5 | 6755 | |
f388c88a EZ |
6756 | while (1) |
6757 | { | |
6758 | int timeout_reduced_for_timers = 0; | |
dd2281ae | 6759 | |
f388c88a EZ |
6760 | /* If calling from keyboard input, do not quit |
6761 | since we want to return C-g as an input character. | |
6762 | Otherwise, do pending quit if requested. */ | |
6763 | if (read_kbd >= 0) | |
6764 | QUIT; | |
bad49fc7 | 6765 | |
f388c88a EZ |
6766 | /* Exit now if the cell we're waiting for became non-nil. */ |
6767 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6768 | break; | |
0a65b032 | 6769 | |
bae8d137 RS |
6770 | /* Compute time from now till when time limit is up */ |
6771 | /* Exit if already run out */ | |
52fd88d3 EZ |
6772 | if (time_limit == -1) |
6773 | { | |
6774 | /* -1 specified for timeout means | |
6775 | gobble output available now | |
6776 | but don't wait at all. */ | |
6777 | ||
6778 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
6779 | } | |
6780 | else if (time_limit || microsecs) | |
6720a7fb | 6781 | { |
f694e5d2 KH |
6782 | EMACS_GET_TIME (timeout); |
6783 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
6784 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
6785 | break; |
6786 | } | |
52fd88d3 EZ |
6787 | else |
6788 | { | |
6789 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
6790 | } | |
6720a7fb | 6791 | |
bae8d137 RS |
6792 | /* If our caller will not immediately handle keyboard events, |
6793 | run timer events directly. | |
6794 | (Callers that will immediately read keyboard events | |
6795 | call timer_delay on their own.) */ | |
f3fbd155 | 6796 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6797 | { |
6798 | EMACS_TIME timer_delay; | |
0a65b032 | 6799 | |
9baacf76 | 6800 | do |
0a65b032 | 6801 | { |
9baacf76 | 6802 | int old_timers_run = timers_run; |
f868cd8a | 6803 | timer_delay = timer_check (); |
9baacf76 GM |
6804 | if (timers_run != old_timers_run && do_display) |
6805 | /* We must retry, since a timer may have requeued itself | |
6806 | and that could alter the time delay. */ | |
3007ebfb | 6807 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6808 | else |
6809 | break; | |
0a65b032 | 6810 | } |
9baacf76 | 6811 | while (!detect_input_pending ()); |
0a65b032 | 6812 | |
52fd88d3 | 6813 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6814 | if (read_kbd != 0 |
52fd88d3 EZ |
6815 | && requeued_events_pending_p ()) |
6816 | break; | |
6817 | ||
f694e5d2 | 6818 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
6819 | { |
6820 | EMACS_TIME difference; | |
f694e5d2 | 6821 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
6822 | if (EMACS_TIME_NEG_P (difference)) |
6823 | { | |
f694e5d2 | 6824 | timeout = timer_delay; |
bae8d137 RS |
6825 | timeout_reduced_for_timers = 1; |
6826 | } | |
6827 | } | |
6828 | } | |
6829 | ||
6720a7fb JB |
6830 | /* Cause C-g and alarm signals to take immediate action, |
6831 | and cause input available signals to zero out timeout. */ | |
b89a415a | 6832 | if (read_kbd < 0) |
6720a7fb JB |
6833 | set_waiting_for_input (&timeout); |
6834 | ||
0a65b032 RS |
6835 | /* Wait till there is something to do. */ |
6836 | ||
b89a415a | 6837 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
6838 | FD_ZERO (&waitchannels); |
6839 | else | |
6840 | FD_SET (0, &waitchannels); | |
6841 | ||
ff11dfa1 | 6842 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6843 | reprocess its display stuff. */ |
5164ee8e | 6844 | if (frame_garbaged && do_display) |
0a65b032 RS |
6845 | { |
6846 | clear_waiting_for_input (); | |
3007ebfb | 6847 | redisplay_preserve_echo_area (15); |
b89a415a | 6848 | if (read_kbd < 0) |
0a65b032 RS |
6849 | set_waiting_for_input (&timeout); |
6850 | } | |
6720a7fb | 6851 | |
b89a415a | 6852 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
6853 | { |
6854 | nfds = 0; | |
6855 | FD_ZERO (&waitchannels); | |
6856 | } | |
6857 | else | |
6858 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
6859 | &timeout); | |
f694e5d2 KH |
6860 | |
6861 | xerrno = errno; | |
6720a7fb JB |
6862 | |
6863 | /* Make C-g and alarm signals set flags again */ | |
6864 | clear_waiting_for_input (); | |
6865 | ||
6866 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 6867 | do_pending_window_change (0); |
6720a7fb | 6868 | |
f694e5d2 KH |
6869 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
6870 | /* We waited the full specified time, so return now. */ | |
6871 | break; | |
6872 | ||
6720a7fb JB |
6873 | if (nfds == -1) |
6874 | { | |
6875 | /* If the system call was interrupted, then go around the | |
6876 | loop again. */ | |
f694e5d2 | 6877 | if (xerrno == EINTR) |
8db121c4 | 6878 | FD_ZERO (&waitchannels); |
f694e5d2 | 6879 | else |
68c45bf0 | 6880 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 6881 | } |
6720a7fb | 6882 | |
f694e5d2 KH |
6883 | /* Check for keyboard input */ |
6884 | ||
b89a415a | 6885 | if (read_kbd |
78c1afb6 | 6886 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 6887 | { |
78c1afb6 | 6888 | swallow_events (do_display); |
f694e5d2 | 6889 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 6890 | break; |
78c1afb6 EZ |
6891 | } |
6892 | ||
52fd88d3 | 6893 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6894 | if (read_kbd |
52fd88d3 EZ |
6895 | && requeued_events_pending_p ()) |
6896 | break; | |
6897 | ||
f854a00b RS |
6898 | /* If wait_for_cell. check for keyboard input |
6899 | but don't run any timers. | |
6900 | ??? (It seems wrong to me to check for keyboard | |
6901 | input at all when wait_for_cell, but the code | |
6902 | has been this way since July 1994. | |
6903 | Try changing this after version 19.31.) */ | |
f3fbd155 | 6904 | if (! NILP (wait_for_cell) |
f854a00b RS |
6905 | && detect_input_pending ()) |
6906 | { | |
6907 | swallow_events (do_display); | |
6908 | if (detect_input_pending ()) | |
6909 | break; | |
6910 | } | |
6911 | ||
0a65b032 | 6912 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6913 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 6914 | break; |
6720a7fb JB |
6915 | } |
6916 | ||
a87b802f JB |
6917 | start_polling (); |
6918 | ||
6720a7fb JB |
6919 | return 0; |
6920 | } | |
6921 | ||
f388c88a EZ |
6922 | #endif /* not subprocesses */ |
6923 | ||
6924 | /* The following functions are needed even if async subprocesses are | |
6925 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 6926 | |
01faa934 DN |
6927 | /* Add DESC to the set of keyboard input descriptors. */ |
6928 | ||
6929 | void | |
6930 | add_keyboard_wait_descriptor (int desc) | |
6931 | { | |
bf05eed6 | 6932 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
6933 | FD_SET (desc, &input_wait_mask); |
6934 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
6935 | if (desc > max_input_desc) |
6936 | max_input_desc = desc; | |
bf05eed6 | 6937 | #endif |
01faa934 DN |
6938 | } |
6939 | ||
6940 | /* From now on, do not expect DESC to give keyboard input. */ | |
6941 | ||
6942 | void | |
6943 | delete_keyboard_wait_descriptor (int desc) | |
6944 | { | |
bf05eed6 | 6945 | #ifdef subprocesses |
01faa934 | 6946 | int fd; |
3fad2ad2 | 6947 | int lim = max_input_desc; |
01faa934 DN |
6948 | |
6949 | FD_CLR (desc, &input_wait_mask); | |
6950 | FD_CLR (desc, &non_process_wait_mask); | |
6951 | ||
3fad2ad2 | 6952 | if (desc == max_input_desc) |
01faa934 | 6953 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
6954 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
6955 | max_input_desc = fd; | |
bf05eed6 | 6956 | #endif |
01faa934 DN |
6957 | } |
6958 | ||
fc549af9 EZ |
6959 | /* Setup coding systems of PROCESS. */ |
6960 | ||
6961 | void | |
6962 | setup_process_coding_systems (Lisp_Object process) | |
6963 | { | |
6964 | #ifdef subprocesses | |
6965 | struct Lisp_Process *p = XPROCESS (process); | |
6966 | int inch = p->infd; | |
6967 | int outch = p->outfd; | |
6968 | Lisp_Object coding_system; | |
6969 | ||
6970 | if (inch < 0 || outch < 0) | |
6971 | return; | |
6972 | ||
6973 | if (!proc_decode_coding_system[inch]) | |
6974 | proc_decode_coding_system[inch] | |
6975 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6976 | coding_system = p->decode_coding_system; | |
6977 | if (! NILP (p->filter)) | |
6978 | ; | |
6979 | else if (BUFFERP (p->buffer)) | |
6980 | { | |
4b4deea2 | 6981 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
6982 | coding_system = raw_text_coding_system (coding_system); |
6983 | } | |
6984 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
6985 | ||
6986 | if (!proc_encode_coding_system[outch]) | |
6987 | proc_encode_coding_system[outch] | |
6988 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6989 | setup_coding_system (p->encode_coding_system, | |
6990 | proc_encode_coding_system[outch]); | |
6991 | #endif | |
6992 | } | |
6993 | ||
6994 | /* Close all descriptors currently in use for communication | |
6995 | with subprocess. This is used in a newly-forked subprocess | |
6996 | to get rid of irrelevant descriptors. */ | |
6997 | ||
6998 | void | |
6999 | close_process_descs (void) | |
7000 | { | |
7001 | #ifndef DOS_NT | |
7002 | int i; | |
7003 | for (i = 0; i < MAXDESC; i++) | |
7004 | { | |
7005 | Lisp_Object process; | |
7006 | process = chan_process[i]; | |
7007 | if (!NILP (process)) | |
7008 | { | |
7009 | int in = XPROCESS (process)->infd; | |
7010 | int out = XPROCESS (process)->outfd; | |
7011 | if (in >= 0) | |
7012 | emacs_close (in); | |
7013 | if (out >= 0 && in != out) | |
7014 | emacs_close (out); | |
7015 | } | |
7016 | } | |
7017 | #endif | |
7018 | } | |
7019 | ||
6720a7fb | 7020 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7021 | doc: /* Return the (or a) process associated with BUFFER. |
7022 | BUFFER may be a buffer or the name of one. */) | |
7023 | (register Lisp_Object buffer) | |
6720a7fb | 7024 | { |
f388c88a EZ |
7025 | #ifdef subprocesses |
7026 | register Lisp_Object buf, tail, proc; | |
7027 | ||
7028 | if (NILP (buffer)) return Qnil; | |
7029 | buf = Fget_buffer (buffer); | |
7030 | if (NILP (buf)) return Qnil; | |
7031 | ||
7032 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7033 | { | |
7034 | proc = Fcdr (XCAR (tail)); | |
7035 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) | |
7036 | return proc; | |
7037 | } | |
7038 | #endif /* subprocesses */ | |
6720a7fb JB |
7039 | return Qnil; |
7040 | } | |
7041 | ||
52a1b894 | 7042 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7043 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7044 | 1, 1, 0, | |
f388c88a EZ |
7045 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7046 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7047 | associated with PROCESS will inherit the coding system used to decode | |
7048 | the process output. */) | |
5842a27b | 7049 | (register Lisp_Object process) |
52a1b894 | 7050 | { |
f388c88a EZ |
7051 | #ifdef subprocesses |
7052 | CHECK_PROCESS (process); | |
7053 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7054 | #else | |
52a1b894 EZ |
7055 | /* Ignore the argument and return the value of |
7056 | inherit-process-coding-system. */ | |
7057 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7058 | #endif |
52a1b894 EZ |
7059 | } |
7060 | ||
6720a7fb | 7061 | /* Kill all processes associated with `buffer'. |
f388c88a | 7062 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7063 | |
d9bb0c32 | 7064 | void |
f388c88a | 7065 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7066 | { |
f388c88a EZ |
7067 | #ifdef subprocesses |
7068 | Lisp_Object tail, proc; | |
7069 | ||
7070 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7071 | { | |
7072 | proc = XCDR (XCAR (tail)); | |
7073 | if (PROCESSP (proc) | |
7074 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) | |
7075 | { | |
7076 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7077 | Fdelete_process (proc); | |
7078 | else if (XPROCESS (proc)->infd >= 0) | |
7079 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7080 | } | |
7081 | } | |
7082 | #else /* subprocesses */ | |
7083 | /* Since we have no subprocesses, this does nothing. */ | |
7084 | #endif /* subprocesses */ | |
6720a7fb JB |
7085 | } |
7086 | ||
a7ca3326 | 7087 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, |
16a97296 | 7088 | Swaiting_for_user_input_p, 0, 0, 0, |
77defa9a EZ |
7089 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
7090 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7091 | (void) | |
7092 | { | |
7093 | #ifdef subprocesses | |
7094 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7095 | #else | |
7096 | return Qnil; | |
7097 | #endif | |
7098 | } | |
7099 | ||
d568829b EZ |
7100 | /* Stop reading input from keyboard sources. */ |
7101 | ||
7102 | void | |
7103 | hold_keyboard_input (void) | |
7104 | { | |
7105 | kbd_is_on_hold = 1; | |
7106 | } | |
7107 | ||
7108 | /* Resume reading input from keyboard sources. */ | |
7109 | ||
7110 | void | |
7111 | unhold_keyboard_input (void) | |
7112 | { | |
7113 | kbd_is_on_hold = 0; | |
7114 | } | |
7115 | ||
7116 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7117 | ||
7118 | int | |
7119 | kbd_on_hold_p (void) | |
7120 | { | |
7121 | return kbd_is_on_hold; | |
7122 | } | |
7123 | ||
f388c88a EZ |
7124 | \f |
7125 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7126 | ||
934e2a68 EZ |
7127 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7128 | 0, 0, 0, | |
7129 | doc: /* Return a list of numerical process IDs of all running processes. | |
7130 | If this functionality is unsupported, return nil. | |
7131 | ||
f388c88a EZ |
7132 | See `process-attributes' for getting attributes of a process given its ID. */) |
7133 | (void) | |
7134 | { | |
7135 | return list_system_processes (); | |
7136 | } | |
7137 | ||
7138 | DEFUN ("process-attributes", Fprocess_attributes, | |
7139 | Sprocess_attributes, 1, 1, 0, | |
7140 | doc: /* Return attributes of the process given by its PID, a number. | |
7141 | ||
7142 | Value is an alist where each element is a cons cell of the form | |
7143 | ||
7144 | \(KEY . VALUE) | |
7145 | ||
7146 | If this functionality is unsupported, the value is nil. | |
7147 | ||
7148 | See `list-system-processes' for getting a list of all process IDs. | |
7149 | ||
7150 | The KEYs of the attributes that this function may return are listed | |
7151 | below, together with the type of the associated VALUE (in parentheses). | |
7152 | Not all platforms support all of these attributes; unsupported | |
7153 | attributes will not appear in the returned alist. | |
7154 | Unless explicitly indicated otherwise, numbers can have either | |
7155 | integer or floating point values. | |
7156 | ||
7157 | euid -- Effective user User ID of the process (number) | |
7158 | user -- User name corresponding to euid (string) | |
7159 | egid -- Effective user Group ID of the process (number) | |
7160 | group -- Group name corresponding to egid (string) | |
7161 | comm -- Command name (executable name only) (string) | |
7162 | state -- Process state code, such as "S", "R", or "T" (string) | |
7163 | ppid -- Parent process ID (number) | |
7164 | pgrp -- Process group ID (number) | |
7165 | sess -- Session ID, i.e. process ID of session leader (number) | |
7166 | ttname -- Controlling tty name (string) | |
7167 | tpgid -- ID of foreground process group on the process's tty (number) | |
7168 | minflt -- number of minor page faults (number) | |
7169 | majflt -- number of major page faults (number) | |
7170 | cminflt -- cumulative number of minor page faults (number) | |
7171 | cmajflt -- cumulative number of major page faults (number) | |
7172 | utime -- user time used by the process, in the (HIGH LOW USEC) format | |
7173 | stime -- system time used by the process, in the (HIGH LOW USEC) format | |
7174 | time -- sum of utime and stime, in the (HIGH LOW USEC) format | |
7175 | cutime -- user time used by the process and its children, (HIGH LOW USEC) | |
7176 | cstime -- system time used by the process and its children, (HIGH LOW USEC) | |
7177 | ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format | |
7178 | pri -- priority of the process (number) | |
7179 | nice -- nice value of the process (number) | |
7180 | thcount -- process thread count (number) | |
7181 | start -- time the process started, in the (HIGH LOW USEC) format | |
7182 | vsize -- virtual memory size of the process in KB's (number) | |
7183 | rss -- resident set size of the process in KB's (number) | |
7184 | etime -- elapsed time the process is running, in (HIGH LOW USEC) format | |
7185 | pcpu -- percents of CPU time used by the process (floating-point number) | |
7186 | pmem -- percents of total physical memory used by process's resident set | |
7187 | (floating-point number) | |
7188 | args -- command line which invoked the process (string). */) | |
7189 | ( Lisp_Object pid) | |
7190 | { | |
7191 | return system_process_attributes (pid); | |
7192 | } | |
7193 | ||
7194 | \f | |
7195 | void | |
7196 | init_process (void) | |
7197 | { | |
7198 | #ifdef subprocesses | |
7199 | register int i; | |
7200 | ||
7201 | inhibit_sentinels = 0; | |
7202 | ||
7203 | #ifdef SIGCHLD | |
7204 | #ifndef CANNOT_DUMP | |
7205 | if (! noninteractive || initialized) | |
7206 | #endif | |
7207 | signal (SIGCHLD, sigchld_handler); | |
7208 | #endif | |
7209 | ||
7210 | FD_ZERO (&input_wait_mask); | |
7211 | FD_ZERO (&non_keyboard_wait_mask); | |
7212 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7213 | FD_ZERO (&write_mask); |
f388c88a | 7214 | max_process_desc = 0; |
3fad2ad2 | 7215 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7216 | |
7217 | #ifdef NON_BLOCKING_CONNECT | |
7218 | FD_ZERO (&connect_wait_mask); | |
7219 | num_pending_connects = 0; | |
7220 | #endif | |
7221 | ||
7222 | #ifdef ADAPTIVE_READ_BUFFERING | |
7223 | process_output_delay_count = 0; | |
7224 | process_output_skip = 0; | |
7225 | #endif | |
7226 | ||
7227 | /* Don't do this, it caused infinite select loops. The display | |
7228 | method should call add_keyboard_wait_descriptor on stdin if it | |
7229 | needs that. */ | |
7230 | #if 0 | |
7231 | FD_SET (0, &input_wait_mask); | |
7232 | #endif | |
7233 | ||
7234 | Vprocess_alist = Qnil; | |
7235 | #ifdef SIGCHLD | |
7236 | deleted_pid_list = Qnil; | |
7237 | #endif | |
7238 | for (i = 0; i < MAXDESC; i++) | |
7239 | { | |
7240 | chan_process[i] = Qnil; | |
7241 | proc_buffered_char[i] = -1; | |
7242 | } | |
7243 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7244 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7245 | #ifdef DATAGRAM_SOCKETS | |
7246 | memset (datagram_address, 0, sizeof datagram_address); | |
7247 | #endif | |
7248 | ||
f388c88a EZ |
7249 | { |
7250 | Lisp_Object subfeatures = Qnil; | |
7251 | const struct socket_options *sopt; | |
7252 | ||
7253 | #define ADD_SUBFEATURE(key, val) \ | |
7254 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7255 | ||
7256 | #ifdef NON_BLOCKING_CONNECT | |
7257 | ADD_SUBFEATURE (QCnowait, Qt); | |
7258 | #endif | |
7259 | #ifdef DATAGRAM_SOCKETS | |
7260 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7261 | #endif | |
7262 | #ifdef HAVE_SEQPACKET | |
7263 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7264 | #endif | |
7265 | #ifdef HAVE_LOCAL_SOCKETS | |
7266 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7267 | #endif | |
7268 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7269 | #ifdef AF_INET6 | |
7270 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7271 | #endif | |
7272 | #ifdef HAVE_GETSOCKNAME | |
7273 | ADD_SUBFEATURE (QCservice, Qt); | |
7274 | #endif | |
5e617bc2 | 7275 | #if defined (O_NONBLOCK) || defined (O_NDELAY) |
f388c88a EZ |
7276 | ADD_SUBFEATURE (QCserver, Qt); |
7277 | #endif | |
7278 | ||
7279 | for (sopt = socket_options; sopt->name; sopt++) | |
7280 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7281 | ||
7282 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7283 | } | |
f388c88a EZ |
7284 | |
7285 | #if defined (DARWIN_OS) | |
7286 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7287 | processes. As such, we only change the default value. */ | |
7288 | if (initialized) | |
7289 | { | |
f44bd759 PE |
7290 | char const *release = (STRINGP (Voperating_system_release) |
7291 | ? SSDATA (Voperating_system_release) | |
7292 | : 0); | |
f388c88a EZ |
7293 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION |
7294 | && release[1] == '.')) { | |
7295 | Vprocess_connection_type = Qnil; | |
7296 | } | |
7297 | } | |
7298 | #endif | |
7299 | #endif /* subprocesses */ | |
7300 | kbd_is_on_hold = 0; | |
7301 | } | |
7302 | ||
7303 | void | |
7304 | syms_of_process (void) | |
7305 | { | |
7306 | #ifdef subprocesses | |
7307 | ||
cd3520a4 JB |
7308 | DEFSYM (Qprocessp, "processp"); |
7309 | DEFSYM (Qrun, "run"); | |
7310 | DEFSYM (Qstop, "stop"); | |
7311 | DEFSYM (Qsignal, "signal"); | |
f388c88a EZ |
7312 | |
7313 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7314 | here again. | |
934e2a68 | 7315 | |
f388c88a EZ |
7316 | Qexit = intern_c_string ("exit"); |
7317 | staticpro (&Qexit); */ | |
934e2a68 | 7318 | |
cd3520a4 JB |
7319 | DEFSYM (Qopen, "open"); |
7320 | DEFSYM (Qclosed, "closed"); | |
7321 | DEFSYM (Qconnect, "connect"); | |
7322 | DEFSYM (Qfailed, "failed"); | |
7323 | DEFSYM (Qlisten, "listen"); | |
7324 | DEFSYM (Qlocal, "local"); | |
7325 | DEFSYM (Qipv4, "ipv4"); | |
f388c88a | 7326 | #ifdef AF_INET6 |
cd3520a4 JB |
7327 | DEFSYM (Qipv6, "ipv6"); |
7328 | #endif | |
7329 | DEFSYM (Qdatagram, "datagram"); | |
7330 | DEFSYM (Qseqpacket, "seqpacket"); | |
7331 | ||
7332 | DEFSYM (QCport, ":port"); | |
7333 | DEFSYM (QCspeed, ":speed"); | |
7334 | DEFSYM (QCprocess, ":process"); | |
7335 | ||
7336 | DEFSYM (QCbytesize, ":bytesize"); | |
7337 | DEFSYM (QCstopbits, ":stopbits"); | |
7338 | DEFSYM (QCparity, ":parity"); | |
7339 | DEFSYM (Qodd, "odd"); | |
7340 | DEFSYM (Qeven, "even"); | |
7341 | DEFSYM (QCflowcontrol, ":flowcontrol"); | |
7342 | DEFSYM (Qhw, "hw"); | |
7343 | DEFSYM (Qsw, "sw"); | |
7344 | DEFSYM (QCsummary, ":summary"); | |
7345 | ||
7346 | DEFSYM (Qreal, "real"); | |
7347 | DEFSYM (Qnetwork, "network"); | |
7348 | DEFSYM (Qserial, "serial"); | |
7349 | DEFSYM (QCbuffer, ":buffer"); | |
7350 | DEFSYM (QChost, ":host"); | |
7351 | DEFSYM (QCservice, ":service"); | |
7352 | DEFSYM (QClocal, ":local"); | |
7353 | DEFSYM (QCremote, ":remote"); | |
7354 | DEFSYM (QCcoding, ":coding"); | |
7355 | DEFSYM (QCserver, ":server"); | |
7356 | DEFSYM (QCnowait, ":nowait"); | |
7357 | DEFSYM (QCsentinel, ":sentinel"); | |
7358 | DEFSYM (QClog, ":log"); | |
7359 | DEFSYM (QCnoquery, ":noquery"); | |
7360 | DEFSYM (QCstop, ":stop"); | |
7361 | DEFSYM (QCoptions, ":options"); | |
7362 | DEFSYM (QCplist, ":plist"); | |
7363 | ||
7364 | DEFSYM (Qlast_nonmenu_event, "last-nonmenu-event"); | |
934e2a68 | 7365 | |
f388c88a EZ |
7366 | staticpro (&Vprocess_alist); |
7367 | #ifdef SIGCHLD | |
7368 | staticpro (&deleted_pid_list); | |
7369 | #endif | |
934e2a68 | 7370 | |
f388c88a | 7371 | #endif /* subprocesses */ |
6720a7fb | 7372 | |
cd3520a4 JB |
7373 | DEFSYM (QCname, ":name"); |
7374 | DEFSYM (QCtype, ":type"); | |
7375 | ||
7376 | DEFSYM (Qeuid, "euid"); | |
7377 | DEFSYM (Qegid, "egid"); | |
7378 | DEFSYM (Quser, "user"); | |
7379 | DEFSYM (Qgroup, "group"); | |
7380 | DEFSYM (Qcomm, "comm"); | |
7381 | DEFSYM (Qstate, "state"); | |
7382 | DEFSYM (Qppid, "ppid"); | |
7383 | DEFSYM (Qpgrp, "pgrp"); | |
7384 | DEFSYM (Qsess, "sess"); | |
7385 | DEFSYM (Qttname, "ttname"); | |
7386 | DEFSYM (Qtpgid, "tpgid"); | |
7387 | DEFSYM (Qminflt, "minflt"); | |
7388 | DEFSYM (Qmajflt, "majflt"); | |
7389 | DEFSYM (Qcminflt, "cminflt"); | |
7390 | DEFSYM (Qcmajflt, "cmajflt"); | |
7391 | DEFSYM (Qutime, "utime"); | |
7392 | DEFSYM (Qstime, "stime"); | |
7393 | DEFSYM (Qtime, "time"); | |
7394 | DEFSYM (Qcutime, "cutime"); | |
7395 | DEFSYM (Qcstime, "cstime"); | |
7396 | DEFSYM (Qctime, "ctime"); | |
7397 | DEFSYM (Qpri, "pri"); | |
7398 | DEFSYM (Qnice, "nice"); | |
7399 | DEFSYM (Qthcount, "thcount"); | |
7400 | DEFSYM (Qstart, "start"); | |
7401 | DEFSYM (Qvsize, "vsize"); | |
7402 | DEFSYM (Qrss, "rss"); | |
7403 | DEFSYM (Qetime, "etime"); | |
7404 | DEFSYM (Qpcpu, "pcpu"); | |
7405 | DEFSYM (Qpmem, "pmem"); | |
7406 | DEFSYM (Qargs, "args"); | |
9057ff80 | 7407 | |
29208e82 | 7408 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
f388c88a EZ |
7409 | doc: /* *Non-nil means delete processes immediately when they exit. |
7410 | A value of nil means don't delete them until `list-processes' is run. */); | |
7411 | ||
7412 | delete_exited_processes = 1; | |
7413 | ||
462aa963 | 7414 | #ifdef subprocesses |
29208e82 | 7415 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7416 | doc: /* Control type of device used to communicate with subprocesses. |
7417 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7418 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7419 | then a pipe is used in any case. | |
7420 | The value takes effect when `start-process' is called. */); | |
7421 | Vprocess_connection_type = Qt; | |
7422 | ||
7423 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7424 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7425 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7426 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7427 | is read in very small blocks, potentially resulting in very poor performance. | |
7428 | This behavior can be remedied to some extent by setting this variable to a | |
7429 | non-nil value, as it will automatically delay reading from such processes, to | |
7430 | allow them to produce more output before Emacs tries to read it. | |
7431 | If the value is t, the delay is reset after each write to the process; any other | |
7432 | non-nil value means that the delay is not reset on write. | |
7433 | The variable takes effect when `start-process' is called. */); | |
7434 | Vprocess_adaptive_read_buffering = Qt; | |
7435 | #endif | |
7436 | ||
7437 | defsubr (&Sprocessp); | |
7438 | defsubr (&Sget_process); | |
7439 | defsubr (&Sdelete_process); | |
7440 | defsubr (&Sprocess_status); | |
7441 | defsubr (&Sprocess_exit_status); | |
7442 | defsubr (&Sprocess_id); | |
7443 | defsubr (&Sprocess_name); | |
7444 | defsubr (&Sprocess_tty_name); | |
7445 | defsubr (&Sprocess_command); | |
7446 | defsubr (&Sset_process_buffer); | |
7447 | defsubr (&Sprocess_buffer); | |
7448 | defsubr (&Sprocess_mark); | |
7449 | defsubr (&Sset_process_filter); | |
7450 | defsubr (&Sprocess_filter); | |
7451 | defsubr (&Sset_process_sentinel); | |
7452 | defsubr (&Sprocess_sentinel); | |
7453 | defsubr (&Sset_process_window_size); | |
7454 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7455 | defsubr (&Sset_process_query_on_exit_flag); | |
7456 | defsubr (&Sprocess_query_on_exit_flag); | |
7457 | defsubr (&Sprocess_contact); | |
7458 | defsubr (&Sprocess_plist); | |
7459 | defsubr (&Sset_process_plist); | |
f388c88a EZ |
7460 | defsubr (&Sprocess_list); |
7461 | defsubr (&Sstart_process); | |
f388c88a EZ |
7462 | defsubr (&Sserial_process_configure); |
7463 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7464 | defsubr (&Sset_network_process_option); |
7465 | defsubr (&Smake_network_process); | |
7466 | defsubr (&Sformat_network_address); | |
5e617bc2 | 7467 | #if defined (HAVE_NET_IF_H) |
f388c88a EZ |
7468 | #ifdef SIOCGIFCONF |
7469 | defsubr (&Snetwork_interface_list); | |
7470 | #endif | |
5e617bc2 | 7471 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
f388c88a EZ |
7472 | defsubr (&Snetwork_interface_info); |
7473 | #endif | |
5e617bc2 | 7474 | #endif /* defined (HAVE_NET_IF_H) */ |
f388c88a EZ |
7475 | #ifdef DATAGRAM_SOCKETS |
7476 | defsubr (&Sprocess_datagram_address); | |
7477 | defsubr (&Sset_process_datagram_address); | |
7478 | #endif | |
7479 | defsubr (&Saccept_process_output); | |
7480 | defsubr (&Sprocess_send_region); | |
7481 | defsubr (&Sprocess_send_string); | |
7482 | defsubr (&Sinterrupt_process); | |
7483 | defsubr (&Skill_process); | |
7484 | defsubr (&Squit_process); | |
7485 | defsubr (&Sstop_process); | |
7486 | defsubr (&Scontinue_process); | |
7487 | defsubr (&Sprocess_running_child_p); | |
7488 | defsubr (&Sprocess_send_eof); | |
7489 | defsubr (&Ssignal_process); | |
7490 | defsubr (&Swaiting_for_user_input_p); | |
7491 | defsubr (&Sprocess_type); | |
7492 | defsubr (&Sset_process_coding_system); | |
7493 | defsubr (&Sprocess_coding_system); | |
7494 | defsubr (&Sset_process_filter_multibyte); | |
7495 | defsubr (&Sprocess_filter_multibyte_p); | |
7496 | ||
7497 | #endif /* subprocesses */ | |
7498 | ||
6720a7fb | 7499 | defsubr (&Sget_buffer_process); |
52a1b894 | 7500 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7501 | defsubr (&Slist_system_processes); |
a20878b6 | 7502 | defsubr (&Sprocess_attributes); |
6720a7fb | 7503 | } |