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; |
435c1d67 | 645 | p->gnutls_state = NULL; |
9c6c6f49 CY |
646 | p->gnutls_x509_cred = NULL; |
647 | p->gnutls_anon_cred = NULL; | |
8af55556 TZ |
648 | #endif |
649 | ||
d0d6b7c5 JB |
650 | /* If name is already in use, modify it until it is unused. */ |
651 | ||
652 | name1 = name; | |
653 | for (i = 1; ; i++) | |
654 | { | |
655 | tem = Fget_process (name1); | |
656 | if (NILP (tem)) break; | |
31c286f7 | 657 | sprintf (suffix, "<%"pMd">", i); |
d0d6b7c5 JB |
658 | name1 = concat2 (name, build_string (suffix)); |
659 | } | |
660 | name = name1; | |
661 | p->name = name; | |
23d6bb9c | 662 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
663 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
664 | return val; | |
665 | } | |
666 | ||
ff6daed3 | 667 | static void |
d3da34e0 | 668 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
669 | { |
670 | register Lisp_Object pair; | |
671 | ||
672 | pair = Frassq (proc, Vprocess_alist); | |
673 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
674 | |
675 | deactivate_process (proc); | |
676 | } | |
03f04413 | 677 | |
d0d6b7c5 JB |
678 | \f |
679 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 680 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 681 | (Lisp_Object object) |
d0d6b7c5 | 682 | { |
4ee3e309 | 683 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
684 | } |
685 | ||
686 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 687 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 688 | (register Lisp_Object name) |
d0d6b7c5 | 689 | { |
bcd69aea | 690 | if (PROCESSP (name)) |
d0d6b7c5 | 691 | return name; |
b7826503 | 692 | CHECK_STRING (name); |
d0d6b7c5 JB |
693 | return Fcdr (Fassoc (name, Vprocess_alist)); |
694 | } | |
695 | ||
ebb9e16f JB |
696 | /* This is how commands for the user decode process arguments. It |
697 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
698 | Buffers denote the first process in the buffer, and nil denotes the | |
699 | current buffer. */ | |
d0d6b7c5 | 700 | |
77b221b1 | 701 | static Lisp_Object |
d3da34e0 | 702 | get_process (register Lisp_Object name) |
d0d6b7c5 | 703 | { |
1619761d KH |
704 | register Lisp_Object proc, obj; |
705 | if (STRINGP (name)) | |
706 | { | |
707 | obj = Fget_process (name); | |
708 | if (NILP (obj)) | |
709 | obj = Fget_buffer (name); | |
710 | if (NILP (obj)) | |
d5db4077 | 711 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
712 | } |
713 | else if (NILP (name)) | |
714 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 715 | else |
1619761d KH |
716 | obj = name; |
717 | ||
718 | /* Now obj should be either a buffer object or a process object. | |
719 | */ | |
720 | if (BUFFERP (obj)) | |
d0d6b7c5 | 721 | { |
1619761d | 722 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 723 | if (NILP (proc)) |
4b4deea2 | 724 | error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj), name))); |
d0d6b7c5 | 725 | } |
d0d6b7c5 | 726 | else |
1619761d | 727 | { |
b7826503 | 728 | CHECK_PROCESS (obj); |
1619761d KH |
729 | proc = obj; |
730 | } | |
731 | return proc; | |
d0d6b7c5 JB |
732 | } |
733 | ||
a5cfdda8 KS |
734 | |
735 | #ifdef SIGCHLD | |
736 | /* Fdelete_process promises to immediately forget about the process, but in | |
737 | reality, Emacs needs to remember those processes until they have been | |
738 | treated by sigchld_handler; otherwise this handler would consider the | |
739 | process as being synchronous and say that the synchronous process is | |
740 | dead. */ | |
741 | static Lisp_Object deleted_pid_list; | |
742 | #endif | |
743 | ||
d0d6b7c5 | 744 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
745 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
746 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
747 | nil, indicating the current buffer's process. */) | |
5842a27b | 748 | (register Lisp_Object process) |
d0d6b7c5 | 749 | { |
ff6daed3 KS |
750 | register struct Lisp_Process *p; |
751 | ||
4ee3e309 | 752 | process = get_process (process); |
ff6daed3 KS |
753 | p = XPROCESS (process); |
754 | ||
6bfd98e7 | 755 | p->raw_status_new = 0; |
d888760c | 756 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 757 | { |
ff6daed3 | 758 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
60f0fb11 | 759 | p->tick = ++process_tick; |
ff6daed3 | 760 | status_notify (p); |
e42bdf01 | 761 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 762 | } |
60f0fb11 | 763 | else if (p->infd >= 0) |
d0d6b7c5 | 764 | { |
a5cfdda8 KS |
765 | #ifdef SIGCHLD |
766 | Lisp_Object symbol; | |
d30fe779 EZ |
767 | /* Assignment to EMACS_INT stops GCC whining about limited range |
768 | of data type. */ | |
29ed4d51 | 769 | EMACS_INT pid = p->pid; |
a5cfdda8 KS |
770 | |
771 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 772 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
773 | /* GC treated elements set to nil. */ |
774 | Fdelq (Qnil, deleted_pid_list)); | |
775 | /* If the process has already signaled, remove it from the list. */ | |
776 | if (p->raw_status_new) | |
777 | update_status (p); | |
778 | symbol = p->status; | |
779 | if (CONSP (p->status)) | |
780 | symbol = XCAR (p->status); | |
781 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
29ed4d51 CY |
782 | deleted_pid_list |
783 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
784 | else |
785 | #endif | |
786 | { | |
787 | Fkill_process (process, Qnil); | |
788 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ | |
789 | p->status | |
790 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); | |
60f0fb11 | 791 | p->tick = ++process_tick; |
a5cfdda8 | 792 | status_notify (p); |
e42bdf01 | 793 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 794 | } |
d0d6b7c5 | 795 | } |
4ee3e309 | 796 | remove_process (process); |
d0d6b7c5 JB |
797 | return Qnil; |
798 | } | |
799 | \f | |
800 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
801 | doc: /* Return the status of PROCESS. |
802 | The returned value is one of the following symbols: | |
803 | run -- for a process that is running. | |
804 | stop -- for a process stopped but continuable. | |
805 | exit -- for a process that has exited. | |
806 | signal -- for a process that has got a fatal signal. | |
807 | open -- for a network stream connection that is open. | |
e690ca94 | 808 | listen -- for a network stream server that is listening. |
fdb82f93 | 809 | closed -- for a network stream connection that is closed. |
e4984112 KS |
810 | connect -- when waiting for a non-blocking connection to complete. |
811 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
812 | nil -- if arg is a process name and no such process exists. |
813 | PROCESS may be a process, a buffer, the name of a process, or | |
814 | nil, indicating the current buffer's process. */) | |
5842a27b | 815 | (register Lisp_Object process) |
d0d6b7c5 JB |
816 | { |
817 | register struct Lisp_Process *p; | |
818 | register Lisp_Object status; | |
343f4114 | 819 | |
4ee3e309 EN |
820 | if (STRINGP (process)) |
821 | process = Fget_process (process); | |
343f4114 | 822 | else |
4ee3e309 | 823 | process = get_process (process); |
343f4114 | 824 | |
4ee3e309 EN |
825 | if (NILP (process)) |
826 | return process; | |
343f4114 | 827 | |
4ee3e309 | 828 | p = XPROCESS (process); |
6bfd98e7 | 829 | if (p->raw_status_new) |
d0d6b7c5 JB |
830 | update_status (p); |
831 | status = p->status; | |
bcd69aea | 832 | if (CONSP (status)) |
70949dac | 833 | status = XCAR (status); |
d888760c | 834 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 835 | { |
e690ca94 | 836 | if (EQ (status, Qexit)) |
d0d6b7c5 | 837 | status = Qclosed; |
e690ca94 KS |
838 | else if (EQ (p->command, Qt)) |
839 | status = Qstop; | |
840 | else if (EQ (status, Qrun)) | |
841 | status = Qopen; | |
d0d6b7c5 JB |
842 | } |
843 | return status; | |
844 | } | |
845 | ||
846 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
847 | 1, 1, 0, | |
fdb82f93 PJ |
848 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
849 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 850 | (register Lisp_Object process) |
d0d6b7c5 | 851 | { |
b7826503 | 852 | CHECK_PROCESS (process); |
6bfd98e7 | 853 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 EN |
854 | update_status (XPROCESS (process)); |
855 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 856 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
857 | return make_number (0); |
858 | } | |
859 | ||
860 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 861 | doc: /* Return the process id of PROCESS. |
f3d9532b | 862 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 863 | For a network connection, this value is nil. */) |
5842a27b | 864 | (register Lisp_Object process) |
d0d6b7c5 | 865 | { |
d30fe779 EZ |
866 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
867 | data type. */ | |
868 | EMACS_INT pid; | |
869 | ||
b7826503 | 870 | CHECK_PROCESS (process); |
d30fe779 EZ |
871 | pid = XPROCESS (process)->pid; |
872 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
873 | } |
874 | ||
875 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
876 | doc: /* Return the name of PROCESS, as a string. |
877 | This is the name of the program invoked in PROCESS, | |
878 | possibly modified to make it unique among process names. */) | |
5842a27b | 879 | (register Lisp_Object process) |
d0d6b7c5 | 880 | { |
b7826503 | 881 | CHECK_PROCESS (process); |
4ee3e309 | 882 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
883 | } |
884 | ||
885 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
886 | doc: /* Return the command that was executed to start PROCESS. |
887 | This is a list of strings, the first string being the program executed | |
888 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
889 | For a network or serial process, this is nil (process is running) or t |
890 | \(process is stopped). */) | |
5842a27b | 891 | (register Lisp_Object process) |
d0d6b7c5 | 892 | { |
b7826503 | 893 | CHECK_PROCESS (process); |
4ee3e309 | 894 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
895 | } |
896 | ||
3b9a3dfa | 897 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
898 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
899 | This is the terminal that the process itself reads and writes on, | |
900 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 901 | (register Lisp_Object process) |
3b9a3dfa | 902 | { |
b7826503 | 903 | CHECK_PROCESS (process); |
4ee3e309 | 904 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
905 | } |
906 | ||
d0d6b7c5 | 907 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 | 908 | 2, 2, 0, |
76147d94 DD |
909 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). |
910 | Return BUFFER. */) | |
5842a27b | 911 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 912 | { |
e690ca94 KS |
913 | struct Lisp_Process *p; |
914 | ||
b7826503 | 915 | CHECK_PROCESS (process); |
d0d6b7c5 | 916 | if (!NILP (buffer)) |
b7826503 | 917 | CHECK_BUFFER (buffer); |
e690ca94 KS |
918 | p = XPROCESS (process); |
919 | p->buffer = buffer; | |
d888760c | 920 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 921 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); |
03f04413 | 922 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
923 | return buffer; |
924 | } | |
925 | ||
926 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
927 | 1, 1, 0, |
928 | doc: /* Return the buffer PROCESS is associated with. | |
929 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 930 | (register Lisp_Object process) |
d0d6b7c5 | 931 | { |
b7826503 | 932 | CHECK_PROCESS (process); |
4ee3e309 | 933 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
934 | } |
935 | ||
936 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
937 | 1, 1, 0, |
938 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 939 | (register Lisp_Object process) |
d0d6b7c5 | 940 | { |
b7826503 | 941 | CHECK_PROCESS (process); |
4ee3e309 | 942 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
943 | } |
944 | ||
945 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
946 | 2, 2, 0, |
947 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 948 | A value of t means stop accepting output from the process. |
3452df9e KS |
949 | |
950 | When a process has a filter, its buffer is not used for output. | |
951 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 952 | passed to the filter. |
3452df9e | 953 | |
fdb82f93 | 954 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
955 | The string argument is normally a multibyte string, except: |
956 | - if the process' input coding system is no-conversion or raw-text, | |
957 | it is a unibyte string (the non-converted input), or else | |
958 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
959 | string (the result of converting the decoded input multibyte | |
960 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 961 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 962 | { |
471f86b9 | 963 | struct Lisp_Process *p; |
177c0ea7 | 964 | |
b7826503 | 965 | CHECK_PROCESS (process); |
471f86b9 GM |
966 | p = XPROCESS (process); |
967 | ||
968 | /* Don't signal an error if the process' input file descriptor | |
969 | is closed. This could make debugging Lisp more difficult, | |
970 | for example when doing something like | |
971 | ||
972 | (setq process (start-process ...)) | |
973 | (debug) | |
974 | (set-process-filter process ...) */ | |
177c0ea7 | 975 | |
60f0fb11 | 976 | if (p->infd >= 0) |
a69281ff | 977 | { |
e690ca94 | 978 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 979 | { |
60f0fb11 SM |
980 | FD_CLR (p->infd, &input_wait_mask); |
981 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 982 | } |
e690ca94 | 983 | else if (EQ (p->filter, Qt) |
d888760c GM |
984 | /* Network or serial process not stopped: */ |
985 | && !EQ (p->command, Qt)) | |
471f86b9 | 986 | { |
60f0fb11 SM |
987 | FD_SET (p->infd, &input_wait_mask); |
988 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 989 | } |
a69281ff | 990 | } |
177c0ea7 | 991 | |
471f86b9 | 992 | p->filter = filter; |
d888760c | 993 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 994 | p->childp = Fplist_put (p->childp, QCfilter, filter); |
03f04413 | 995 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
996 | return filter; |
997 | } | |
998 | ||
999 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1000 | 1, 1, 0, |
1001 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1002 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 1003 | (register Lisp_Object process) |
d0d6b7c5 | 1004 | { |
b7826503 | 1005 | CHECK_PROCESS (process); |
4ee3e309 | 1006 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1007 | } |
1008 | ||
1009 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1010 | 2, 2, 0, |
1011 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1012 | The sentinel is called as a function when the process changes state. | |
1013 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 1014 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 1015 | { |
6b61353c KH |
1016 | struct Lisp_Process *p; |
1017 | ||
b7826503 | 1018 | CHECK_PROCESS (process); |
6b61353c KH |
1019 | p = XPROCESS (process); |
1020 | ||
1021 | p->sentinel = sentinel; | |
d888760c | 1022 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6b61353c | 1023 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); |
d0d6b7c5 JB |
1024 | return sentinel; |
1025 | } | |
1026 | ||
1027 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1028 | 1, 1, 0, |
1029 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1030 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 1031 | (register Lisp_Object process) |
d0d6b7c5 | 1032 | { |
b7826503 | 1033 | CHECK_PROCESS (process); |
4ee3e309 | 1034 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1035 | } |
1036 | ||
396df322 | 1037 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1038 | Sset_process_window_size, 3, 3, 0, |
1039 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1040 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1041 | { |
b7826503 PJ |
1042 | CHECK_PROCESS (process); |
1043 | CHECK_NATNUM (height); | |
1044 | CHECK_NATNUM (width); | |
177c0ea7 | 1045 | |
60f0fb11 SM |
1046 | if (XPROCESS (process)->infd < 0 |
1047 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1048 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1049 | return Qnil; |
1050 | else | |
1051 | return Qt; | |
1052 | } | |
1053 | ||
52a1b894 | 1054 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1055 | Fset_process_inherit_coding_system_flag, |
1056 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1057 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1058 | If the second argument FLAG is non-nil, then the variable | |
1059 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1060 | will be bound to the value of the coding system used to decode | |
1061 | the process output. | |
1062 | ||
1063 | This is useful when the coding system specified for the process buffer | |
1064 | leaves either the character code conversion or the end-of-line conversion | |
1065 | unspecified, or if the coding system used to decode the process output | |
1066 | is more appropriate for saving the process buffer. | |
1067 | ||
1068 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1069 | starting the process is an alternative way of setting the inherit flag | |
1070 | for the process which will run. */) | |
5842a27b | 1071 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1072 | { |
b7826503 | 1073 | CHECK_PROCESS (process); |
60f0fb11 | 1074 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1075 | return flag; |
1076 | } | |
1077 | ||
e690ca94 KS |
1078 | DEFUN ("set-process-query-on-exit-flag", |
1079 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1080 | 2, 2, 0, | |
1081 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1082 | If the second argument FLAG is non-nil, Emacs will query the user before |
10be7e0d | 1083 | exiting or killing a buffer if PROCESS is running. */) |
5842a27b | 1084 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1085 | { |
b7826503 | 1086 | CHECK_PROCESS (process); |
60f0fb11 | 1087 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1088 | return flag; |
d0d6b7c5 | 1089 | } |
312c9964 | 1090 | |
e690ca94 KS |
1091 | DEFUN ("process-query-on-exit-flag", |
1092 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1093 | 1, 1, 0, |
f3d9532b | 1094 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1095 | (register Lisp_Object process) |
de282a05 | 1096 | { |
b7826503 | 1097 | CHECK_PROCESS (process); |
60f0fb11 | 1098 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1099 | } |
1100 | ||
1101 | #ifdef DATAGRAM_SOCKETS | |
cd64ea1d | 1102 | static Lisp_Object Fprocess_datagram_address (Lisp_Object); |
e690ca94 KS |
1103 | #endif |
1104 | ||
1105 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1106 | 1, 2, 0, | |
1107 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1108 | For a network or serial connection, the value depends on the optional |
1109 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1110 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1111 | connection. If KEY is t, the complete contact information for the | |
1112 | connection is returned, else the specific value for the keyword KEY is | |
1113 | returned. See `make-network-process' or `make-serial-process' for a | |
1114 | list of keywords. */) | |
5842a27b | 1115 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1116 | { |
1117 | Lisp_Object contact; | |
1118 | ||
1119 | CHECK_PROCESS (process); | |
1120 | contact = XPROCESS (process)->childp; | |
1121 | ||
1122 | #ifdef DATAGRAM_SOCKETS | |
1123 | if (DATAGRAM_CONN_P (process) | |
1124 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1125 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1126 | Fprocess_datagram_address (process)); |
1127 | #endif | |
1128 | ||
d888760c | 1129 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1130 | return contact; |
d888760c | 1131 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1132 | return Fcons (Fplist_get (contact, QChost), |
1133 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1134 | if (NILP (key) && SERIALCONN_P (process)) |
1135 | return Fcons (Fplist_get (contact, QCport), | |
1136 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1137 | return Fplist_get (contact, key); |
de282a05 RS |
1138 | } |
1139 | ||
faa7db08 KS |
1140 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1141 | 1, 1, 0, | |
1142 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1143 | (register Lisp_Object process) |
365aee82 | 1144 | { |
ac4a7584 | 1145 | CHECK_PROCESS (process); |
faa7db08 | 1146 | return XPROCESS (process)->plist; |
ac4a7584 | 1147 | } |
365aee82 | 1148 | |
faa7db08 KS |
1149 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1150 | 2, 2, 0, | |
26a086c6 | 1151 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1152 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1153 | { |
365aee82 | 1154 | CHECK_PROCESS (process); |
faa7db08 | 1155 | CHECK_LIST (plist); |
365aee82 | 1156 | |
faa7db08 | 1157 | XPROCESS (process)->plist = plist; |
26a086c6 | 1158 | return plist; |
365aee82 KS |
1159 | } |
1160 | ||
312c9964 RS |
1161 | #if 0 /* Turned off because we don't currently record this info |
1162 | in the process. Perhaps add it. */ | |
1163 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1164 | doc: /* Return the connection type of PROCESS. |
1165 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1166 | a socket connection. */) | |
5842a27b | 1167 | (Lisp_Object process) |
312c9964 RS |
1168 | { |
1169 | return XPROCESS (process)->type; | |
1170 | } | |
1171 | #endif | |
2a7bb882 | 1172 | |
d888760c GM |
1173 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1174 | doc: /* Return the connection type of PROCESS. | |
1175 | The value is either the symbol `real', `network', or `serial'. | |
1176 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1177 | nil, indicating the current buffer's process. */) | |
5842a27b | 1178 | (Lisp_Object process) |
d888760c GM |
1179 | { |
1180 | Lisp_Object proc; | |
1181 | proc = get_process (process); | |
1182 | return XPROCESS (proc)->type; | |
1183 | } | |
991234f0 | 1184 | |
991234f0 | 1185 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1186 | 1, 2, 0, |
991234f0 | 1187 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1188 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1189 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1190 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1191 | number in the string, even when present in ADDRESS. |
1192 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1193 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1194 | { |
991234f0 KS |
1195 | if (NILP (address)) |
1196 | return Qnil; | |
1197 | ||
1198 | if (STRINGP (address)) /* AF_LOCAL */ | |
1199 | return address; | |
1200 | ||
e1652a86 | 1201 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1202 | { |
1203 | register struct Lisp_Vector *p = XVECTOR (address); | |
3d1e65a1 | 1204 | EMACS_INT size = p->header.size; |
ded83665 | 1205 | Lisp_Object args[10]; |
0dccee41 | 1206 | int nargs, i; |
991234f0 | 1207 | |
eab3844f | 1208 | if (size == 4 || (size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1209 | { |
1210 | args[0] = build_string ("%d.%d.%d.%d"); | |
1211 | nargs = 4; | |
1212 | } | |
eab3844f | 1213 | else if (size == 5) |
0dccee41 KS |
1214 | { |
1215 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1216 | nargs = 5; | |
1217 | } | |
eab3844f | 1218 | else if (size == 8 || (size == 9 && !NILP (omit_port))) |
e1652a86 KS |
1219 | { |
1220 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1221 | nargs = 8; | |
1222 | } | |
eab3844f | 1223 | else if (size == 9) |
e1652a86 KS |
1224 | { |
1225 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1226 | nargs = 9; | |
1227 | } | |
0dccee41 | 1228 | else |
991234f0 KS |
1229 | return Qnil; |
1230 | ||
0dccee41 | 1231 | for (i = 0; i < nargs; i++) |
cbf23adb JB |
1232 | { |
1233 | EMACS_INT element = XINT (p->contents[i]); | |
1234 | ||
1235 | if (element < 0 || element > 65535) | |
1236 | return Qnil; | |
1237 | ||
1238 | if (nargs <= 5 /* IPv4 */ | |
1239 | && i < 4 /* host, not port */ | |
1240 | && element > 255) | |
1241 | return Qnil; | |
1242 | ||
1243 | args[i+1] = p->contents[i]; | |
1244 | } | |
1245 | ||
0dccee41 | 1246 | return Fformat (nargs+1, args); |
991234f0 KS |
1247 | } |
1248 | ||
1249 | if (CONSP (address)) | |
1250 | { | |
1251 | Lisp_Object args[2]; | |
1252 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1253 | args[1] = Fcar (address); |
991234f0 | 1254 | return Fformat (2, args); |
991234f0 KS |
1255 | } |
1256 | ||
1257 | return Qnil; | |
1258 | } | |
d0d6b7c5 JB |
1259 | |
1260 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1261 | doc: /* Return a list of all processes. */) |
5842a27b | 1262 | (void) |
d0d6b7c5 JB |
1263 | { |
1264 | return Fmapcar (Qcdr, Vprocess_alist); | |
1265 | } | |
1266 | \f | |
b0310da4 JB |
1267 | /* Starting asynchronous inferior processes. */ |
1268 | ||
d3da34e0 | 1269 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1270 | |
d0d6b7c5 | 1271 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1272 | doc: /* Start a program in a subprocess. Return the process object for it. |
1273 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1274 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1275 | |
1276 | Process output (both standard output and standard error streams) goes | |
1277 | at end of BUFFER, unless you specify an output stream or filter | |
1278 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1279 | this process is not associated with any buffer. |
1280 | ||
6b8bc570 CY |
1281 | PROGRAM is the program file name. It is searched for in `exec-path' |
1282 | (which see). If nil, just associate a pty with the buffer. Remaining | |
1283 | arguments are strings to give program as arguments. | |
320aebc9 | 1284 | |
4b6c5eee EZ |
1285 | If you want to separate standard output from standard error, invoke |
1286 | the command through a shell and redirect one of them using the shell | |
1287 | syntax. | |
320aebc9 | 1288 | |
3ecdf100 | 1289 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
f66c7cf8 | 1290 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 | 1291 | { |
1e30af70 | 1292 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1293 | register unsigned char **new_argv; |
f66c7cf8 | 1294 | ptrdiff_t i; |
aed13378 | 1295 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1296 | |
1297 | buffer = args[1]; | |
1298 | if (!NILP (buffer)) | |
1299 | buffer = Fget_buffer_create (buffer); | |
1300 | ||
1e30af70 JB |
1301 | /* Make sure that the child will be able to chdir to the current |
1302 | buffer's current directory, or its unhandled equivalent. We | |
1303 | can't just have the child check for an error when it does the | |
1304 | chdir, since it's in a vfork. | |
1305 | ||
1306 | We have to GCPRO around this because Fexpand_file_name and | |
1307 | Funhandled_file_name_directory might call a file name handling | |
1308 | function. The argument list is protected by the caller, so all | |
1309 | we really have to worry about is buffer. */ | |
1310 | { | |
1311 | struct gcpro gcpro1, gcpro2; | |
1312 | ||
4b4deea2 | 1313 | current_dir = BVAR (current_buffer, directory); |
1e30af70 JB |
1314 | |
1315 | GCPRO2 (buffer, current_dir); | |
1316 | ||
ca319910 SM |
1317 | current_dir = Funhandled_file_name_directory (current_dir); |
1318 | if (NILP (current_dir)) | |
1319 | /* If the file name handler says that current_dir is unreachable, use | |
1320 | a sensible default. */ | |
1321 | current_dir = build_string ("~/"); | |
1322 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1323 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1324 | report_file_error ("Setting current directory", | |
4b4deea2 | 1325 | Fcons (BVAR (current_buffer, directory), Qnil)); |
1e30af70 JB |
1326 | |
1327 | UNGCPRO; | |
1328 | } | |
1329 | ||
d0d6b7c5 | 1330 | name = args[0]; |
b7826503 | 1331 | CHECK_STRING (name); |
d0d6b7c5 JB |
1332 | |
1333 | program = args[2]; | |
1334 | ||
850d0752 NR |
1335 | if (!NILP (program)) |
1336 | CHECK_STRING (program); | |
d0d6b7c5 | 1337 | |
d0d6b7c5 | 1338 | proc = make_process (name); |
b0310da4 JB |
1339 | /* If an error occurs and we can't start the process, we want to |
1340 | remove it from the process list. This means that each error | |
1341 | check in create_process doesn't need to call remove_process | |
1342 | itself; it's all taken care of here. */ | |
1343 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1344 | |
1345 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1346 | XPROCESS (proc)->plist = Qnil; |
d888760c | 1347 | XPROCESS (proc)->type = Qreal; |
d0d6b7c5 JB |
1348 | XPROCESS (proc)->buffer = buffer; |
1349 | XPROCESS (proc)->sentinel = Qnil; | |
1350 | XPROCESS (proc)->filter = Qnil; | |
1351 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); | |
1352 | ||
8af55556 TZ |
1353 | #ifdef HAVE_GNUTLS |
1354 | /* AKA GNUTLS_INITSTAGE(proc). */ | |
1355 | XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY; | |
1356 | XPROCESS (proc)->gnutls_cred_type = Qnil; | |
1357 | #endif | |
1358 | ||
6b61353c | 1359 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1360 | XPROCESS (proc)->adaptive_read_buffering |
1361 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1362 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1363 | #endif |
1364 | ||
7af71e17 | 1365 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1366 | if (BUFFERP (buffer)) |
d8a2934e RS |
1367 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1368 | BUF_ZV (XBUFFER (buffer)), | |
1369 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1370 | |
67918941 | 1371 | { |
d5d4ae71 KH |
1372 | /* Decide coding systems for communicating with the process. Here |
1373 | we don't setup the structure coding_system nor pay attention to | |
1374 | unibyte mode. They are done in create_process. */ | |
1375 | ||
67918941 RS |
1376 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1377 | Lisp_Object coding_systems = Qt; | |
1378 | Lisp_Object val, *args2; | |
a4a37e65 | 1379 | struct gcpro gcpro1, gcpro2; |
67918941 | 1380 | |
d5d4ae71 KH |
1381 | val = Vcoding_system_for_read; |
1382 | if (NILP (val)) | |
67918941 RS |
1383 | { |
1384 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1385 | args2[0] = Qstart_process; | |
1386 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1387 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1388 | if (!NILP (program)) |
1389 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1390 | UNGCPRO; |
1391 | if (CONSP (coding_systems)) | |
70949dac | 1392 | val = XCAR (coding_systems); |
67918941 | 1393 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1394 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1395 | } |
1396 | XPROCESS (proc)->decode_coding_system = val; | |
1397 | ||
d5d4ae71 KH |
1398 | val = Vcoding_system_for_write; |
1399 | if (NILP (val)) | |
67918941 RS |
1400 | { |
1401 | if (EQ (coding_systems, Qt)) | |
1402 | { | |
dd5963ea | 1403 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
67918941 RS |
1404 | args2[0] = Qstart_process; |
1405 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1406 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1407 | if (!NILP (program)) |
1408 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1409 | UNGCPRO; |
1410 | } | |
1411 | if (CONSP (coding_systems)) | |
70949dac | 1412 | val = XCDR (coding_systems); |
67918941 | 1413 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1414 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1415 | } |
1416 | XPROCESS (proc)->encode_coding_system = val; | |
e1dbe924 | 1417 | /* Note: At this moment, the above coding system may leave |
fcaf8878 KH |
1418 | text-conversion or eol-conversion unspecified. They will be |
1419 | decided after we read output from the process and decode it by | |
1420 | some coding system, or just before we actually send a text to | |
1421 | the process. */ | |
67918941 | 1422 | } |
0fa1789e | 1423 | |
a4a37e65 | 1424 | |
cbe81f1d | 1425 | XPROCESS (proc)->decoding_buf = empty_unibyte_string; |
850d0752 | 1426 | XPROCESS (proc)->decoding_carryover = 0; |
cbe81f1d | 1427 | XPROCESS (proc)->encoding_buf = empty_unibyte_string; |
ed30cf85 | 1428 | |
850d0752 NR |
1429 | XPROCESS (proc)->inherit_coding_system_flag |
1430 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1431 | |
850d0752 NR |
1432 | if (!NILP (program)) |
1433 | { | |
1434 | /* If program file name is not absolute, search our path for it. | |
1435 | Put the name we will really use in TEM. */ | |
1436 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1437 | && !(SCHARS (program) > 1 | |
1438 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1439 | { | |
1440 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1441 | ||
1442 | tem = Qnil; | |
1443 | GCPRO4 (name, program, buffer, current_dir); | |
1444 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1445 | UNGCPRO; | |
1446 | if (NILP (tem)) | |
1447 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1448 | tem = Fexpand_file_name (tem, Qnil); | |
1449 | } | |
1450 | else | |
1451 | { | |
1452 | if (!NILP (Ffile_directory_p (program))) | |
1453 | error ("Specified program for new process is a directory"); | |
1454 | tem = program; | |
1455 | } | |
ed30cf85 | 1456 | |
850d0752 NR |
1457 | /* If program file name starts with /: for quoting a magic name, |
1458 | discard that. */ | |
1459 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1460 | && SREF (tem, 1) == ':') | |
1461 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1462 | |
77bf07e1 | 1463 | { |
fcaf8878 | 1464 | Lisp_Object arg_encoding = Qnil; |
850d0752 NR |
1465 | struct gcpro gcpro1; |
1466 | GCPRO1 (tem); | |
a4a37e65 | 1467 | |
850d0752 NR |
1468 | /* Encode the file name and put it in NEW_ARGV. |
1469 | That's where the child will use it to execute the program. */ | |
1470 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1471 | |
850d0752 NR |
1472 | /* Here we encode arguments by the coding system used for sending |
1473 | data to the process. We don't support using different coding | |
1474 | systems for encoding arguments and for encoding data sent to the | |
1475 | process. */ | |
77bf07e1 | 1476 | |
850d0752 NR |
1477 | for (i = 3; i < nargs; i++) |
1478 | { | |
1479 | tem = Fcons (args[i], tem); | |
1480 | CHECK_STRING (XCAR (tem)); | |
1481 | if (STRING_MULTIBYTE (XCAR (tem))) | |
fcaf8878 KH |
1482 | { |
1483 | if (NILP (arg_encoding)) | |
1484 | arg_encoding = (complement_process_encoding_system | |
1485 | (XPROCESS (proc)->encode_coding_system)); | |
1486 | XSETCAR (tem, | |
1487 | code_convert_string_norecord | |
1488 | (XCAR (tem), arg_encoding, 1)); | |
1489 | } | |
850d0752 | 1490 | } |
a4a37e65 | 1491 | |
850d0752 NR |
1492 | UNGCPRO; |
1493 | } | |
0fa1789e | 1494 | |
850d0752 NR |
1495 | /* Now that everything is encoded we can collect the strings into |
1496 | NEW_ARGV. */ | |
1497 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1498 | new_argv[nargs - 2] = 0; | |
52a1b894 | 1499 | |
c5101a77 | 1500 | for (i = nargs - 2; i-- != 0; ) |
850d0752 NR |
1501 | { |
1502 | new_argv[i] = SDATA (XCAR (tem)); | |
1503 | tem = XCDR (tem); | |
1504 | } | |
1505 | ||
1506 | create_process (proc, (char **) new_argv, current_dir); | |
1507 | } | |
1508 | else | |
1509 | create_pty (proc); | |
d0d6b7c5 | 1510 | |
b0310da4 | 1511 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1512 | } |
1513 | ||
b0310da4 | 1514 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1515 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1516 | an error and the process wasn't started successfully, so we should |
1517 | remove it from the process list. */ | |
1518 | static Lisp_Object | |
d3da34e0 | 1519 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1520 | { |
bcd69aea | 1521 | if (!PROCESSP (proc)) |
b0310da4 JB |
1522 | abort (); |
1523 | ||
2bf26180 GM |
1524 | /* Was PROC started successfully? |
1525 | -2 is used for a pty with no process, eg for gdb. */ | |
1526 | if (XPROCESS (proc)->pid <= 0 && XPROCESS (proc)->pid != -2) | |
b0310da4 JB |
1527 | remove_process (proc); |
1528 | ||
1529 | return Qnil; | |
1530 | } | |
1531 | ||
ff6daed3 | 1532 | static void |
d3da34e0 | 1533 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1534 | { |
30904ab7 | 1535 | /* Nothing to do. */ |
d0d6b7c5 JB |
1536 | } |
1537 | ||
30904ab7 | 1538 | |
40ccffa6 | 1539 | static void |
d3da34e0 | 1540 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1541 | { |
29ed4d51 CY |
1542 | int inchannel, outchannel; |
1543 | pid_t pid; | |
d0d6b7c5 | 1544 | int sv[2]; |
2c4df143 YM |
1545 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1546 | int wait_child_setup[2]; | |
1547 | #endif | |
0dc70c33 KH |
1548 | sigset_t procmask; |
1549 | sigset_t blocked; | |
1550 | struct sigaction sigint_action; | |
1551 | struct sigaction sigquit_action; | |
c0ad4ea5 | 1552 | struct sigaction sigpipe_action; |
0dc70c33 KH |
1553 | #ifdef AIX |
1554 | struct sigaction sighup_action; | |
1555 | #endif | |
ecd1f654 KH |
1556 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1557 | volatile int forkin, forkout; | |
1558 | volatile int pty_flag = 0; | |
3ec68006 | 1559 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1560 | extern char **environ; |
3ec68006 | 1561 | #endif |
d0d6b7c5 | 1562 | |
d0d6b7c5 JB |
1563 | inchannel = outchannel = -1; |
1564 | ||
1565 | #ifdef HAVE_PTYS | |
fe45da4e | 1566 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1567 | outchannel = inchannel = allocate_pty (); |
1568 | ||
d0d6b7c5 JB |
1569 | if (inchannel >= 0) |
1570 | { | |
2af70a0c RS |
1571 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1572 | /* On most USG systems it does not work to open the pty's tty here, | |
1573 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1574 | #ifdef O_NOCTTY |
1575 | /* Don't let this terminal become our controlling terminal | |
1576 | (in case we don't have one). */ | |
68c45bf0 | 1577 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1578 | #else |
68c45bf0 | 1579 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1580 | #endif |
1581 | if (forkin < 0) | |
1582 | report_file_error ("Opening pty", Qnil); | |
1583 | #else | |
1584 | forkin = forkout = -1; | |
2af70a0c | 1585 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1586 | pty_flag = 1; |
1587 | } | |
1588 | else | |
1589 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1590 | { |
fc14013c KH |
1591 | int tem; |
1592 | tem = pipe (sv); | |
1593 | if (tem < 0) | |
1594 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1595 | inchannel = sv[0]; |
1596 | forkout = sv[1]; | |
fc14013c KH |
1597 | tem = pipe (sv); |
1598 | if (tem < 0) | |
1599 | { | |
68c45bf0 PE |
1600 | emacs_close (inchannel); |
1601 | emacs_close (forkout); | |
fc14013c KH |
1602 | report_file_error ("Creating pipe", Qnil); |
1603 | } | |
d0d6b7c5 JB |
1604 | outchannel = sv[1]; |
1605 | forkin = sv[0]; | |
1606 | } | |
d0d6b7c5 | 1607 | |
2c4df143 YM |
1608 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1609 | { | |
1610 | int tem; | |
1611 | ||
1612 | tem = pipe (wait_child_setup); | |
1613 | if (tem < 0) | |
1614 | report_file_error ("Creating pipe", Qnil); | |
1615 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1616 | if (tem >= 0) | |
1617 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1618 | if (tem < 0) | |
1619 | { | |
1620 | emacs_close (wait_child_setup[0]); | |
1621 | emacs_close (wait_child_setup[1]); | |
1622 | report_file_error ("Setting file descriptor flags", Qnil); | |
1623 | } | |
1624 | } | |
1625 | #endif | |
1626 | ||
d0d6b7c5 JB |
1627 | #ifdef O_NONBLOCK |
1628 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1629 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1630 | #else |
1631 | #ifdef O_NDELAY | |
1632 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1633 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1634 | #endif |
1635 | #endif | |
1636 | ||
1637 | /* Record this as an active process, with its channels. | |
1638 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1639 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1640 | XPROCESS (process)->infd = inchannel; |
1641 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1642 | |
1643 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1644 | It was only used for getting the foreground tty process, so now | |
1645 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1646 | more portable (see USG_SUBTTY_WORKS above). */ | |
1647 | ||
60f0fb11 | 1648 | XPROCESS (process)->pty_flag = pty_flag; |
d0d6b7c5 JB |
1649 | XPROCESS (process)->status = Qrun; |
1650 | ||
1651 | /* Delay interrupts until we have a chance to store | |
1652 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1653 | sigemptyset (&blocked); |
1654 | #ifdef SIGCHLD | |
1655 | sigaddset (&blocked, SIGCHLD); | |
1656 | #endif | |
351e611f | 1657 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1658 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1659 | this sets the parent's signal handlers as well as the child's. | |
1660 | So delay all interrupts whose handlers the child might munge, | |
1661 | and record the current handlers so they can be restored later. */ | |
1662 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1663 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
c0ad4ea5 | 1664 | sigaddset (&blocked, SIGPIPE); sigaction (SIGPIPE, 0, &sigpipe_action); |
0dc70c33 KH |
1665 | #ifdef AIX |
1666 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1667 | #endif | |
351e611f | 1668 | #endif /* HAVE_WORKING_VFORK */ |
123403e4 | 1669 | pthread_sigmask (SIG_BLOCK, &blocked, &procmask); |
d0d6b7c5 | 1670 | |
3081bf8d | 1671 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1672 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1673 | if (inchannel > max_process_desc) |
1674 | max_process_desc = inchannel; | |
1675 | ||
d0d6b7c5 JB |
1676 | /* Until we store the proper pid, enable sigchld_handler |
1677 | to recognize an unknown pid as standing for this process. | |
1678 | It is very important not to let this `marker' value stay | |
1679 | in the table after this function has returned; if it does | |
1680 | it might cause call-process to hang and subsequent asynchronous | |
1681 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1682 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1683 | |
5cf2b69b KH |
1684 | /* This must be called after the above line because it may signal an |
1685 | error. */ | |
1686 | setup_process_coding_systems (process); | |
1687 | ||
ececcbec | 1688 | BLOCK_INPUT; |
177c0ea7 | 1689 | |
d0d6b7c5 JB |
1690 | { |
1691 | /* child_setup must clobber environ on systems with true vfork. | |
1692 | Protect it from permanent change. */ | |
1693 | char **save_environ = environ; | |
12d8b6ab | 1694 | volatile Lisp_Object encoded_current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1695 | |
e98d950b | 1696 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1697 | pid = vfork (); |
1698 | if (pid == 0) | |
e98d950b | 1699 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1700 | { |
1701 | int xforkin = forkin; | |
1702 | int xforkout = forkout; | |
1703 | ||
1704 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1705 | but fails to handle all the cases. */ | |
1706 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1707 | sigsetmask (SIGEMPTYMASK); | |
1708 | #endif | |
1709 | ||
1710 | /* Make the pty be the controlling terminal of the process. */ | |
1711 | #ifdef HAVE_PTYS | |
1712 | /* First, disconnect its current controlling terminal. */ | |
1713 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1714 | /* We tried doing setsid only if pty_flag, but it caused |
1715 | process_set_signal to fail on SGI when using a pipe. */ | |
1716 | setsid (); | |
ce4c9c90 | 1717 | /* Make the pty's terminal the controlling terminal. */ |
ce8f5a9a | 1718 | if (pty_flag && xforkin >= 0) |
39e9ebcd | 1719 | { |
39e9ebcd RS |
1720 | #ifdef TIOCSCTTY |
1721 | /* We ignore the return value | |
1722 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1723 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1724 | #endif |
39e9ebcd | 1725 | } |
d0d6b7c5 | 1726 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1727 | #ifdef USG |
000ab717 | 1728 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1729 | afterwards. Otherwise, we lose our controlling tty which |
1730 | is set when we open the pty. */ | |
1731 | setpgrp (); | |
1732 | #endif /* USG */ | |
1733 | #endif /* not HAVE_SETSID */ | |
a7ebc409 | 1734 | #if defined (LDISC1) |
9bcf8ec6 KH |
1735 | if (pty_flag && xforkin >= 0) |
1736 | { | |
1737 | struct termios t; | |
1738 | tcgetattr (xforkin, &t); | |
1739 | t.c_lflag = LDISC1; | |
1740 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1741 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1742 | } |
1743 | #else | |
aafadd9f | 1744 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1745 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1746 | { |
1747 | /* Use new line discipline. */ | |
1748 | int ldisc = NTTYDISC; | |
4458f555 | 1749 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1750 | } |
000ab717 | 1751 | #endif |
9bcf8ec6 | 1752 | #endif |
177c0ea7 | 1753 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1754 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1755 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1756 | if (pty_flag) | |
1757 | { | |
177c0ea7 | 1758 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1759 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1760 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
ce8f5a9a AS |
1761 | if (j >= 0) |
1762 | { | |
1763 | ioctl (j, TIOCNOTTY, 0); | |
1764 | emacs_close (j); | |
1765 | } | |
5a570e37 | 1766 | #ifndef USG |
d0d6b7c5 JB |
1767 | /* In order to get a controlling terminal on some versions |
1768 | of BSD, it is necessary to put the process in pgrp 0 | |
1769 | before it opens the terminal. */ | |
99c1aeca | 1770 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1771 | setpgid (0, 0); |
1772 | #else | |
d0d6b7c5 | 1773 | setpgrp (0, 0); |
3ea1d291 | 1774 | #endif |
d0d6b7c5 JB |
1775 | #endif |
1776 | } | |
1777 | #endif /* TIOCNOTTY */ | |
1778 | ||
e39a993c | 1779 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1780 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1781 | conditional on TIOCSPGRP, |
1782 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1783 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1784 | that system does seem to need this code, even though | |
1785 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1786 | /* Now close the pty (if we had it open) and reopen it. |
1787 | This makes the pty the controlling terminal of the subprocess. */ | |
1788 | if (pty_flag) | |
1789 | { | |
99e3d726 | 1790 | |
68c45bf0 PE |
1791 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1792 | would work? */ | |
d0d6b7c5 | 1793 | if (xforkin >= 0) |
68c45bf0 PE |
1794 | emacs_close (xforkin); |
1795 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1796 | |
4aa54ba8 RS |
1797 | if (xforkin < 0) |
1798 | { | |
68c45bf0 PE |
1799 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
1800 | emacs_write (1, pty_name, strlen (pty_name)); | |
1801 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
1802 | _exit (1); |
1803 | } | |
1804 | ||
d0d6b7c5 | 1805 | } |
e39a993c | 1806 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1807 | |
d0d6b7c5 | 1808 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
1809 | if (pty_flag) |
1810 | { | |
1811 | SETUP_SLAVE_PTY; | |
1812 | } | |
d0d6b7c5 JB |
1813 | #endif /* SETUP_SLAVE_PTY */ |
1814 | #ifdef AIX | |
1815 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
1816 | Now reenable it in the child, so it will die when we want it to. */ | |
1817 | if (pty_flag) | |
1818 | signal (SIGHUP, SIG_DFL); | |
1819 | #endif | |
1820 | #endif /* HAVE_PTYS */ | |
1821 | ||
0dc70c33 KH |
1822 | signal (SIGINT, SIG_DFL); |
1823 | signal (SIGQUIT, SIG_DFL); | |
2f9a22e2 | 1824 | /* GConf causes us to ignore SIGPIPE, make sure it is restored |
c0ad4ea5 AS |
1825 | in the child. */ |
1826 | signal (SIGPIPE, SIG_DFL); | |
0dc70c33 KH |
1827 | |
1828 | /* Stop blocking signals in the child. */ | |
123403e4 | 1829 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
5e7e1da2 | 1830 | |
ab01d0a8 RS |
1831 | if (pty_flag) |
1832 | child_setup_tty (xforkout); | |
e98d950b RS |
1833 | #ifdef WINDOWSNT |
1834 | pid = child_setup (xforkin, xforkout, xforkout, | |
12d8b6ab | 1835 | new_argv, 1, encoded_current_dir); |
177c0ea7 | 1836 | #else /* not WINDOWSNT */ |
2c4df143 YM |
1837 | #ifdef FD_CLOEXEC |
1838 | emacs_close (wait_child_setup[0]); | |
1839 | #endif | |
d0d6b7c5 | 1840 | child_setup (xforkin, xforkout, xforkout, |
12d8b6ab | 1841 | new_argv, 1, encoded_current_dir); |
e98d950b | 1842 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1843 | } |
1844 | environ = save_environ; | |
1845 | } | |
1846 | ||
ececcbec RS |
1847 | UNBLOCK_INPUT; |
1848 | ||
4a127b3b | 1849 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 1850 | if (pid < 0) |
6311cf58 RS |
1851 | { |
1852 | if (forkin >= 0) | |
68c45bf0 | 1853 | emacs_close (forkin); |
6311cf58 | 1854 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1855 | emacs_close (forkout); |
6311cf58 | 1856 | } |
4a127b3b KH |
1857 | else |
1858 | { | |
1859 | /* vfork succeeded. */ | |
6bfd98e7 | 1860 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 1861 | |
e98d950b | 1862 | #ifdef WINDOWSNT |
4a127b3b | 1863 | register_child (pid, inchannel); |
e98d950b RS |
1864 | #endif /* WINDOWSNT */ |
1865 | ||
4a127b3b KH |
1866 | /* If the subfork execv fails, and it exits, |
1867 | this close hangs. I don't know why. | |
1868 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
1869 | { |
1870 | struct atimer *timer; | |
1871 | EMACS_TIME offset; | |
177c0ea7 | 1872 | |
30904ab7 GM |
1873 | stop_polling (); |
1874 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
1875 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 1876 | |
30904ab7 GM |
1877 | if (forkin >= 0) |
1878 | emacs_close (forkin); | |
1879 | ||
1880 | cancel_atimer (timer); | |
1881 | start_polling (); | |
1882 | } | |
177c0ea7 | 1883 | |
4a127b3b | 1884 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 1885 | emacs_close (forkout); |
d0d6b7c5 | 1886 | |
875e6b94 | 1887 | #ifdef HAVE_PTYS |
4a127b3b KH |
1888 | if (pty_flag) |
1889 | XPROCESS (process)->tty_name = build_string (pty_name); | |
1890 | else | |
875e6b94 | 1891 | #endif |
4a127b3b | 1892 | XPROCESS (process)->tty_name = Qnil; |
2c4df143 YM |
1893 | |
1894 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
1895 | /* Wait for child_setup to complete in case that vfork is | |
1896 | actually defined as fork. The descriptor wait_child_setup[1] | |
1897 | of a pipe is closed at the child side either by close-on-exec | |
1898 | on successful execvp or the _exit call in child_setup. */ | |
1899 | { | |
1900 | char dummy; | |
1901 | ||
1902 | emacs_close (wait_child_setup[1]); | |
1903 | emacs_read (wait_child_setup[0], &dummy, 1); | |
1904 | emacs_close (wait_child_setup[0]); | |
1905 | } | |
1906 | #endif | |
4a127b3b | 1907 | } |
3b9a3dfa | 1908 | |
4a127b3b KH |
1909 | /* Restore the signal state whether vfork succeeded or not. |
1910 | (We will signal an error, below, if it failed.) */ | |
351e611f | 1911 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1912 | /* Restore the parent's signal handlers. */ |
1913 | sigaction (SIGINT, &sigint_action, 0); | |
1914 | sigaction (SIGQUIT, &sigquit_action, 0); | |
c0ad4ea5 | 1915 | sigaction (SIGPIPE, &sigpipe_action, 0); |
0dc70c33 KH |
1916 | #ifdef AIX |
1917 | sigaction (SIGHUP, &sighup_action, 0); | |
1918 | #endif | |
351e611f | 1919 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 | 1920 | /* Stop blocking signals in the parent. */ |
123403e4 | 1921 | pthread_sigmask (SIG_SETMASK, &procmask, 0); |
4a127b3b KH |
1922 | |
1923 | /* Now generate the error if vfork failed. */ | |
1924 | if (pid < 0) | |
1925 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 1926 | } |
d0d6b7c5 | 1927 | |
850d0752 | 1928 | void |
d3da34e0 | 1929 | create_pty (Lisp_Object process) |
850d0752 NR |
1930 | { |
1931 | int inchannel, outchannel; | |
afd4052b | 1932 | int pty_flag = 0; |
850d0752 NR |
1933 | |
1934 | inchannel = outchannel = -1; | |
1935 | ||
1936 | #ifdef HAVE_PTYS | |
1937 | if (!NILP (Vprocess_connection_type)) | |
1938 | outchannel = inchannel = allocate_pty (); | |
1939 | ||
1940 | if (inchannel >= 0) | |
1941 | { | |
1942 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
1943 | /* On most USG systems it does not work to open the pty's tty here, | |
1944 | then close it and reopen it in the child. */ | |
1945 | #ifdef O_NOCTTY | |
1946 | /* Don't let this terminal become our controlling terminal | |
1947 | (in case we don't have one). */ | |
afd4052b | 1948 | int forkout = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
850d0752 | 1949 | #else |
afd4052b | 1950 | int forkout = emacs_open (pty_name, O_RDWR, 0); |
850d0752 | 1951 | #endif |
aba7731a | 1952 | if (forkout < 0) |
850d0752 | 1953 | report_file_error ("Opening pty", Qnil); |
019d2c4c | 1954 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
1955 | /* In the case that vfork is defined as fork, the parent process |
1956 | (Emacs) may send some data before the child process completes | |
1957 | tty options setup. So we setup tty before forking. */ | |
1958 | child_setup_tty (forkout); | |
019d2c4c | 1959 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
1960 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
1961 | pty_flag = 1; | |
1962 | } | |
1963 | #endif /* HAVE_PTYS */ | |
1964 | ||
1965 | #ifdef O_NONBLOCK | |
1966 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
1967 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
1968 | #else | |
1969 | #ifdef O_NDELAY | |
1970 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
1971 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
1972 | #endif | |
1973 | #endif | |
1974 | ||
1975 | /* Record this as an active process, with its channels. | |
1976 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1977 | chan_process[inchannel] = process; | |
1978 | XPROCESS (process)->infd = inchannel; | |
1979 | XPROCESS (process)->outfd = outchannel; | |
1980 | ||
1981 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1982 | It was only used for getting the foreground tty process, so now | |
1983 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1984 | more portable (see USG_SUBTTY_WORKS above). */ | |
1985 | ||
1986 | XPROCESS (process)->pty_flag = pty_flag; | |
1987 | XPROCESS (process)->status = Qrun; | |
1988 | setup_process_coding_systems (process); | |
1989 | ||
1990 | FD_SET (inchannel, &input_wait_mask); | |
1991 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
1992 | if (inchannel > max_process_desc) | |
1993 | max_process_desc = inchannel; | |
1994 | ||
1995 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
1996 | #ifdef HAVE_PTYS |
1997 | if (pty_flag) | |
1998 | XPROCESS (process)->tty_name = build_string (pty_name); | |
1999 | else | |
2000 | #endif | |
2001 | XPROCESS (process)->tty_name = Qnil; | |
850d0752 NR |
2002 | } |
2003 | ||
e690ca94 | 2004 | \f |
e690ca94 KS |
2005 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2006 | The address family of sa is not included in the result. */ | |
2007 | ||
2008 | static Lisp_Object | |
d3da34e0 | 2009 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
2010 | { |
2011 | Lisp_Object address; | |
2012 | int i; | |
2013 | unsigned char *cp; | |
2014 | register struct Lisp_Vector *p; | |
2015 | ||
63136da6 AS |
2016 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2017 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2018 | a zero length name. */ | |
89887d67 | 2019 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2020 | return empty_unibyte_string; |
63136da6 | 2021 | |
e690ca94 KS |
2022 | switch (sa->sa_family) |
2023 | { | |
2024 | case AF_INET: | |
2025 | { | |
2026 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2027 | len = sizeof (sin->sin_addr) + 1; | |
2028 | address = Fmake_vector (make_number (len), Qnil); | |
2029 | p = XVECTOR (address); | |
2030 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2031 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2032 | break; |
2033 | } | |
e1652a86 KS |
2034 | #ifdef AF_INET6 |
2035 | case AF_INET6: | |
2036 | { | |
2037 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2038 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2039 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2040 | address = Fmake_vector (make_number (len), Qnil); | |
2041 | p = XVECTOR (address); | |
2042 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2043 | for (i = 0; i < len; i++) | |
2044 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2045 | return address; | |
2046 | } | |
2047 | #endif | |
e690ca94 KS |
2048 | #ifdef HAVE_LOCAL_SOCKETS |
2049 | case AF_LOCAL: | |
2050 | { | |
fb23673a EZ |
2051 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2052 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2053 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2054 | break; |
fb23673a | 2055 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2056 | } |
2057 | #endif | |
2058 | default: | |
89887d67 | 2059 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2060 | address = Fcons (make_number (sa->sa_family), |
2061 | Fmake_vector (make_number (len), Qnil)); | |
2062 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2063 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2064 | break; |
2065 | } | |
2066 | ||
2067 | i = 0; | |
2068 | while (i < len) | |
2069 | p->contents[i++] = make_number (*cp++); | |
2070 | ||
2071 | return address; | |
2072 | } | |
2073 | ||
2074 | ||
2075 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2076 | ||
2077 | static int | |
d3da34e0 | 2078 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2079 | { |
2080 | register struct Lisp_Vector *p; | |
2081 | ||
2082 | if (VECTORP (address)) | |
2083 | { | |
2084 | p = XVECTOR (address); | |
eab3844f | 2085 | if (p->header.size == 5) |
e690ca94 KS |
2086 | { |
2087 | *familyp = AF_INET; | |
2088 | return sizeof (struct sockaddr_in); | |
2089 | } | |
e1652a86 | 2090 | #ifdef AF_INET6 |
eab3844f | 2091 | else if (p->header.size == 9) |
e1652a86 KS |
2092 | { |
2093 | *familyp = AF_INET6; | |
2094 | return sizeof (struct sockaddr_in6); | |
2095 | } | |
2096 | #endif | |
e690ca94 KS |
2097 | } |
2098 | #ifdef HAVE_LOCAL_SOCKETS | |
2099 | else if (STRINGP (address)) | |
2100 | { | |
2101 | *familyp = AF_LOCAL; | |
2102 | return sizeof (struct sockaddr_un); | |
2103 | } | |
2104 | #endif | |
2105 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2106 | { | |
2107 | struct sockaddr *sa; | |
2108 | *familyp = XINT (XCAR (address)); | |
2109 | p = XVECTOR (XCDR (address)); | |
eab3844f | 2110 | return p->header.size + sizeof (sa->sa_family); |
e690ca94 KS |
2111 | } |
2112 | return 0; | |
2113 | } | |
2114 | ||
2115 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2116 | |
2117 | The address format has been basically validated by | |
2118 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2119 | it could have come from user data. So if FAMILY is not valid, | |
2120 | we return after zeroing *SA. */ | |
e690ca94 KS |
2121 | |
2122 | static void | |
d3da34e0 | 2123 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2124 | { |
2125 | register struct Lisp_Vector *p; | |
34967d0f | 2126 | register unsigned char *cp = NULL; |
e690ca94 KS |
2127 | register int i; |
2128 | ||
72af86bd | 2129 | memset (sa, 0, len); |
e690ca94 KS |
2130 | |
2131 | if (VECTORP (address)) | |
2132 | { | |
2133 | p = XVECTOR (address); | |
2134 | if (family == AF_INET) | |
2135 | { | |
2136 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2137 | len = sizeof (sin->sin_addr) + 1; | |
2138 | i = XINT (p->contents[--len]); | |
2139 | sin->sin_port = htons (i); | |
2140 | cp = (unsigned char *)&sin->sin_addr; | |
9d1a8e5d | 2141 | sa->sa_family = family; |
e690ca94 | 2142 | } |
e1652a86 KS |
2143 | #ifdef AF_INET6 |
2144 | else if (family == AF_INET6) | |
2145 | { | |
2146 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2147 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2148 | len = sizeof (sin6->sin6_addr) + 1; | |
2149 | i = XINT (p->contents[--len]); | |
2150 | sin6->sin6_port = htons (i); | |
2151 | for (i = 0; i < len; i++) | |
2152 | if (INTEGERP (p->contents[i])) | |
2153 | { | |
2154 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2155 | ip6[i] = ntohs (j); | |
2156 | } | |
9d1a8e5d | 2157 | sa->sa_family = family; |
0eb7675e | 2158 | return; |
e1652a86 KS |
2159 | } |
2160 | #endif | |
0eb7675e AS |
2161 | else |
2162 | return; | |
e690ca94 KS |
2163 | } |
2164 | else if (STRINGP (address)) | |
2165 | { | |
2166 | #ifdef HAVE_LOCAL_SOCKETS | |
2167 | if (family == AF_LOCAL) | |
2168 | { | |
fb23673a | 2169 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2170 | cp = SDATA (address); |
fb23673a EZ |
2171 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2172 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2173 | sa->sa_family = family; |
e690ca94 KS |
2174 | } |
2175 | #endif | |
2176 | return; | |
2177 | } | |
2178 | else | |
2179 | { | |
2180 | p = XVECTOR (XCDR (address)); | |
2181 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2182 | } | |
2183 | ||
2184 | for (i = 0; i < len; i++) | |
2185 | if (INTEGERP (p->contents[i])) | |
2186 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2187 | } | |
2188 | ||
2189 | #ifdef DATAGRAM_SOCKETS | |
2190 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2191 | 1, 1, 0, | |
2192 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2193 | (Lisp_Object process) |
e690ca94 KS |
2194 | { |
2195 | int channel; | |
2196 | ||
2197 | CHECK_PROCESS (process); | |
2198 | ||
2199 | if (!DATAGRAM_CONN_P (process)) | |
2200 | return Qnil; | |
2201 | ||
60f0fb11 | 2202 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2203 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2204 | datagram_address[channel].len); | |
2205 | } | |
2206 | ||
2207 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2208 | 2, 2, 0, | |
2209 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2210 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2211 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2212 | { |
2213 | int channel; | |
2214 | int family, len; | |
2215 | ||
2216 | CHECK_PROCESS (process); | |
2217 | ||
2218 | if (!DATAGRAM_CONN_P (process)) | |
2219 | return Qnil; | |
2220 | ||
60f0fb11 | 2221 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2222 | |
2223 | len = get_lisp_to_sockaddr_size (address, &family); | |
2224 | if (datagram_address[channel].len != len) | |
2225 | return Qnil; | |
2226 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2227 | return address; | |
2228 | } | |
2229 | #endif | |
2230 | \f | |
2231 | ||
5e2327cf | 2232 | static const struct socket_options { |
e690ca94 | 2233 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2234 | name without SO_ prefix. */ |
fce70521 | 2235 | const char *name; |
e690ca94 KS |
2236 | /* Option level SOL_... */ |
2237 | int optlevel; | |
2238 | /* Option number SO_... */ | |
2239 | int optnum; | |
6b61353c KH |
2240 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2241 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2242 | } socket_options[] = |
2243 | { | |
2244 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2245 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2246 | #endif |
2247 | #ifdef SO_BROADCAST | |
6b61353c | 2248 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2249 | #endif |
2250 | #ifdef SO_DONTROUTE | |
6b61353c | 2251 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2252 | #endif |
2253 | #ifdef SO_KEEPALIVE | |
6b61353c | 2254 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2255 | #endif |
2256 | #ifdef SO_LINGER | |
6b61353c | 2257 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2258 | #endif |
2259 | #ifdef SO_OOBINLINE | |
6b61353c | 2260 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2261 | #endif |
2262 | #ifdef SO_PRIORITY | |
6b61353c | 2263 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2264 | #endif |
2265 | #ifdef SO_REUSEADDR | |
6b61353c | 2266 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2267 | #endif |
6b61353c | 2268 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2269 | }; |
2270 | ||
6b61353c | 2271 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2272 | |
6b61353c KH |
2273 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2274 | Signals an error if setting a known option fails. | |
2275 | */ | |
e690ca94 KS |
2276 | |
2277 | static int | |
d3da34e0 | 2278 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2279 | { |
6b61353c | 2280 | char *name; |
5e2327cf | 2281 | const struct socket_options *sopt; |
6b61353c | 2282 | int ret = 0; |
e690ca94 | 2283 | |
6b61353c | 2284 | CHECK_SYMBOL (opt); |
e690ca94 | 2285 | |
51b59d79 | 2286 | name = SSDATA (SYMBOL_NAME (opt)); |
6b61353c KH |
2287 | for (sopt = socket_options; sopt->name; sopt++) |
2288 | if (strcmp (name, sopt->name) == 0) | |
2289 | break; | |
e690ca94 | 2290 | |
6b61353c KH |
2291 | switch (sopt->opttype) |
2292 | { | |
2293 | case SOPT_BOOL: | |
2294 | { | |
2295 | int optval; | |
2296 | optval = NILP (val) ? 0 : 1; | |
2297 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2298 | &optval, sizeof (optval)); | |
2299 | break; | |
2300 | } | |
e690ca94 | 2301 | |
6b61353c KH |
2302 | case SOPT_INT: |
2303 | { | |
2304 | int optval; | |
2305 | if (INTEGERP (val)) | |
2306 | optval = XINT (val); | |
2307 | else | |
2308 | error ("Bad option value for %s", name); | |
2309 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2310 | &optval, sizeof (optval)); | |
2311 | break; | |
2312 | } | |
e690ca94 | 2313 | |
6b61353c KH |
2314 | #ifdef SO_BINDTODEVICE |
2315 | case SOPT_IFNAME: | |
2316 | { | |
2317 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2318 | |
6b61353c KH |
2319 | /* This is broken, at least in the Linux 2.4 kernel. |
2320 | To unbind, the arg must be a zero integer, not the empty string. | |
2321 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2322 | memset (devname, 0, sizeof devname); |
6b61353c | 2323 | if (STRINGP (val)) |
e690ca94 | 2324 | { |
51b59d79 | 2325 | char *arg = SSDATA (val); |
6b61353c | 2326 | int len = min (strlen (arg), IFNAMSIZ); |
72af86bd | 2327 | memcpy (devname, arg, len); |
e690ca94 | 2328 | } |
6b61353c KH |
2329 | else if (!NILP (val)) |
2330 | error ("Bad option value for %s", name); | |
2331 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2332 | devname, IFNAMSIZ); | |
2333 | break; | |
2334 | } | |
2335 | #endif | |
e690ca94 | 2336 | |
177c0ea7 | 2337 | #ifdef SO_LINGER |
6b61353c KH |
2338 | case SOPT_LINGER: |
2339 | { | |
2340 | struct linger linger; | |
e690ca94 | 2341 | |
6b61353c KH |
2342 | linger.l_onoff = 1; |
2343 | linger.l_linger = 0; | |
2344 | if (INTEGERP (val)) | |
2345 | linger.l_linger = XINT (val); | |
2346 | else | |
2347 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2348 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2349 | &linger, sizeof (linger)); | |
2350 | break; | |
2351 | } | |
e690ca94 | 2352 | #endif |
6b61353c KH |
2353 | |
2354 | default: | |
2355 | return 0; | |
e690ca94 | 2356 | } |
6b61353c KH |
2357 | |
2358 | if (ret < 0) | |
2359 | report_file_error ("Cannot set network option", | |
2360 | Fcons (opt, Fcons (val, Qnil))); | |
2361 | return (1 << sopt->optbit); | |
e690ca94 KS |
2362 | } |
2363 | ||
6b61353c KH |
2364 | |
2365 | DEFUN ("set-network-process-option", | |
2366 | Fset_network_process_option, Sset_network_process_option, | |
2367 | 3, 4, 0, | |
2368 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2369 | See `make-network-process' for a list of options and values. | |
2370 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2371 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2372 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2373 | { |
6b61353c KH |
2374 | int s; |
2375 | struct Lisp_Process *p; | |
e690ca94 | 2376 | |
e690ca94 | 2377 | CHECK_PROCESS (process); |
6b61353c KH |
2378 | p = XPROCESS (process); |
2379 | if (!NETCONN1_P (p)) | |
2380 | error ("Process is not a network process"); | |
2381 | ||
60f0fb11 | 2382 | s = p->infd; |
6b61353c KH |
2383 | if (s < 0) |
2384 | error ("Process is not running"); | |
2385 | ||
2386 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2387 | { |
6b61353c KH |
2388 | p->childp = Fplist_put (p->childp, option, value); |
2389 | return Qt; | |
e690ca94 | 2390 | } |
6b61353c KH |
2391 | |
2392 | if (NILP (no_error)) | |
2393 | error ("Unknown or unsupported option"); | |
2394 | ||
2395 | return Qnil; | |
e690ca94 | 2396 | } |
6b61353c | 2397 | |
e690ca94 | 2398 | \f |
d888760c GM |
2399 | DEFUN ("serial-process-configure", |
2400 | Fserial_process_configure, | |
2401 | Sserial_process_configure, | |
2402 | 0, MANY, 0, | |
2403 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2404 | ||
2405 | Arguments are specified as keyword/argument pairs. Attributes that | |
2406 | are not given are re-initialized from the process's current | |
2407 | configuration (available via the function `process-contact') or set to | |
2408 | reasonable default values. The following arguments are defined: | |
2409 | ||
2410 | :process PROCESS | |
2411 | :name NAME | |
2412 | :buffer BUFFER | |
2413 | :port PORT | |
2414 | -- Any of these arguments can be given to identify the process that is | |
2415 | to be configured. If none of these arguments is given, the current | |
2416 | buffer's process is used. | |
2417 | ||
2418 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2419 | second, also called baud rate. Any value can be given for SPEED, but | |
2420 | most serial ports work only at a few defined values between 1200 and | |
2421 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2422 | serial port is not configured any further, i.e., all other arguments | |
2423 | are ignored. This may be useful for special serial ports such as | |
2424 | Bluetooth-to-serial converters which can only be configured through AT | |
2425 | commands. A value of nil for SPEED can be used only when passed | |
2426 | through `make-serial-process' or `serial-term'. | |
2427 | ||
2428 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2429 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2430 | ||
2431 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2432 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2433 | PARITY is not given, no parity is used. | |
2434 | ||
2435 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2436 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2437 | is not given or nil, 1 stopbit is used. | |
2438 | ||
2439 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2440 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2441 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2442 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2443 | flowcontrol is used. | |
2444 | ||
2445 | `serial-process-configure' is called by `make-serial-process' for the | |
2446 | initial configuration of the serial port. | |
2447 | ||
2448 | Examples: | |
2449 | ||
2450 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2451 | ||
2452 | \(serial-process-configure | |
2453 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2454 | ||
2455 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2456 | ||
2457 | usage: (serial-process-configure &rest ARGS) */) | |
f66c7cf8 | 2458 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2459 | { |
2460 | struct Lisp_Process *p; | |
2461 | Lisp_Object contact = Qnil; | |
2462 | Lisp_Object proc = Qnil; | |
2463 | struct gcpro gcpro1; | |
2464 | ||
2465 | contact = Flist (nargs, args); | |
2466 | GCPRO1 (contact); | |
2467 | ||
2468 | proc = Fplist_get (contact, QCprocess); | |
2469 | if (NILP (proc)) | |
2470 | proc = Fplist_get (contact, QCname); | |
2471 | if (NILP (proc)) | |
2472 | proc = Fplist_get (contact, QCbuffer); | |
2473 | if (NILP (proc)) | |
2474 | proc = Fplist_get (contact, QCport); | |
2475 | proc = get_process (proc); | |
2476 | p = XPROCESS (proc); | |
a879ee6f | 2477 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2478 | error ("Not a serial process"); |
2479 | ||
2480 | if (NILP (Fplist_get (p->childp, QCspeed))) | |
2481 | { | |
2482 | UNGCPRO; | |
2483 | return Qnil; | |
2484 | } | |
2485 | ||
2486 | serial_configure (p, contact); | |
2487 | ||
2488 | UNGCPRO; | |
2489 | return Qnil; | |
2490 | } | |
d888760c | 2491 | |
d888760c | 2492 | /* Used by make-serial-process to recover from errors. */ |
b766f867 PE |
2493 | static Lisp_Object |
2494 | make_serial_process_unwind (Lisp_Object proc) | |
d888760c GM |
2495 | { |
2496 | if (!PROCESSP (proc)) | |
2497 | abort (); | |
2498 | remove_process (proc); | |
2499 | return Qnil; | |
2500 | } | |
d888760c | 2501 | |
d888760c GM |
2502 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2503 | 0, MANY, 0, | |
2504 | doc: /* Create and return a serial port process. | |
2505 | ||
2506 | In Emacs, serial port connections are represented by process objects, | |
2507 | so input and output work as for subprocesses, and `delete-process' | |
2508 | closes a serial port connection. However, a serial process has no | |
2509 | process id, it cannot be signaled, and the status codes are different | |
2510 | from normal processes. | |
2511 | ||
2512 | `make-serial-process' creates a process and a buffer, on which you | |
2513 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2514 | an interactive terminal. See below for examples. | |
2515 | ||
2516 | Arguments are specified as keyword/argument pairs. The following | |
2517 | arguments are defined: | |
2518 | ||
2519 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2520 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2521 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2522 | the backslashes in strings). | |
2523 | ||
2524 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
2525 | which is called by `make-serial-process'. | |
2526 | ||
2527 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2528 | the value of PORT is used. | |
2529 | ||
2530 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2531 | with the process. Process output goes at the end of that buffer, | |
2532 | unless you specify an output stream or filter function to handle the | |
2533 | output. If BUFFER is not given, the value of NAME is used. | |
2534 | ||
2535 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2536 | system used for both reading and writing for this process. If CODING | |
2537 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2538 | ENCODING is used for writing. | |
2539 | ||
2540 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2541 | the process is running. If BOOL is not given, query before exiting. | |
2542 | ||
2543 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2544 | In the stopped state, a serial process does not accept incoming data, | |
2545 | but you can send outgoing data. The stopped state is cleared by | |
2546 | `continue-process' and set by `stop-process'. | |
2547 | ||
2548 | :filter FILTER -- Install FILTER as the process filter. | |
2549 | ||
2550 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2551 | ||
2552 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2553 | ||
2554 | :speed | |
2555 | :bytesize | |
2556 | :parity | |
2557 | :stopbits | |
2558 | :flowcontrol | |
2559 | -- These arguments are handled by `serial-process-configure', which is | |
2560 | called by `make-serial-process'. | |
2561 | ||
2562 | The original argument list, possibly modified by later configuration, | |
2563 | is available via the function `process-contact'. | |
2564 | ||
2565 | Examples: | |
2566 | ||
2567 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2568 | ||
2569 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2570 | ||
2571 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2572 | ||
2573 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2574 | ||
2575 | usage: (make-serial-process &rest ARGS) */) | |
f66c7cf8 | 2576 | (ptrdiff_t nargs, Lisp_Object *args) |
d888760c GM |
2577 | { |
2578 | int fd = -1; | |
2579 | Lisp_Object proc, contact, port; | |
2580 | struct Lisp_Process *p; | |
2581 | struct gcpro gcpro1; | |
2582 | Lisp_Object name, buffer; | |
2583 | Lisp_Object tem, val; | |
2584 | int specpdl_count = -1; | |
2585 | ||
2586 | if (nargs == 0) | |
2587 | return Qnil; | |
2588 | ||
2589 | contact = Flist (nargs, args); | |
2590 | GCPRO1 (contact); | |
2591 | ||
2592 | port = Fplist_get (contact, QCport); | |
2593 | if (NILP (port)) | |
2594 | error ("No port specified"); | |
2595 | CHECK_STRING (port); | |
2596 | ||
2597 | if (NILP (Fplist_member (contact, QCspeed))) | |
2598 | error (":speed not specified"); | |
2599 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2600 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2601 | ||
2602 | name = Fplist_get (contact, QCname); | |
2603 | if (NILP (name)) | |
2604 | name = port; | |
2605 | CHECK_STRING (name); | |
2606 | proc = make_process (name); | |
2607 | specpdl_count = SPECPDL_INDEX (); | |
2608 | record_unwind_protect (make_serial_process_unwind, proc); | |
2609 | p = XPROCESS (proc); | |
2610 | ||
51b59d79 | 2611 | fd = serial_open (SSDATA (port)); |
d888760c GM |
2612 | p->infd = fd; |
2613 | p->outfd = fd; | |
2614 | if (fd > max_process_desc) | |
2615 | max_process_desc = fd; | |
2616 | chan_process[fd] = proc; | |
2617 | ||
2618 | buffer = Fplist_get (contact, QCbuffer); | |
2619 | if (NILP (buffer)) | |
2620 | buffer = name; | |
2621 | buffer = Fget_buffer_create (buffer); | |
2622 | p->buffer = buffer; | |
2623 | ||
2624 | p->childp = contact; | |
2625 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); | |
2626 | p->type = Qserial; | |
2627 | p->sentinel = Fplist_get (contact, QCsentinel); | |
2628 | p->filter = Fplist_get (contact, QCfilter); | |
2629 | p->log = Qnil; | |
2630 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
2631 | p->kill_without_query = 1; | |
2632 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
2633 | p->command = Qt; | |
2634 | p->pty_flag = 0; | |
2635 | ||
2636 | if (!EQ (p->command, Qt)) | |
2637 | { | |
2638 | FD_SET (fd, &input_wait_mask); | |
2639 | FD_SET (fd, &non_keyboard_wait_mask); | |
2640 | } | |
2641 | ||
2642 | if (BUFFERP (buffer)) | |
2643 | { | |
2644 | set_marker_both (p->mark, buffer, | |
2645 | BUF_ZV (XBUFFER (buffer)), | |
2646 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2647 | } | |
2648 | ||
2649 | tem = Fplist_member (contact, QCcoding); | |
2650 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2651 | tem = Qnil; | |
2652 | ||
2653 | val = Qnil; | |
2654 | if (!NILP (tem)) | |
2655 | { | |
2656 | val = XCAR (XCDR (tem)); | |
2657 | if (CONSP (val)) | |
2658 | val = XCAR (val); | |
2659 | } | |
2660 | else if (!NILP (Vcoding_system_for_read)) | |
2661 | val = Vcoding_system_for_read; | |
4b4deea2 TT |
2662 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2663 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c GM |
2664 | val = Qnil; |
2665 | p->decode_coding_system = val; | |
2666 | ||
2667 | val = Qnil; | |
2668 | if (!NILP (tem)) | |
2669 | { | |
2670 | val = XCAR (XCDR (tem)); | |
2671 | if (CONSP (val)) | |
2672 | val = XCDR (val); | |
2673 | } | |
2674 | else if (!NILP (Vcoding_system_for_write)) | |
2675 | val = Vcoding_system_for_write; | |
4b4deea2 TT |
2676 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
2677 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
d888760c GM |
2678 | val = Qnil; |
2679 | p->encode_coding_system = val; | |
2680 | ||
2681 | setup_process_coding_systems (proc); | |
cbe81f1d | 2682 | p->decoding_buf = empty_unibyte_string; |
d888760c | 2683 | p->decoding_carryover = 0; |
cbe81f1d | 2684 | p->encoding_buf = empty_unibyte_string; |
d888760c GM |
2685 | p->inherit_coding_system_flag |
2686 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2687 | ||
ed3751c8 | 2688 | Fserial_process_configure (nargs, args); |
d888760c GM |
2689 | |
2690 | specpdl_ptr = specpdl + specpdl_count; | |
2691 | ||
2692 | UNGCPRO; | |
2693 | return proc; | |
2694 | } | |
d888760c | 2695 | |
e690ca94 KS |
2696 | /* Create a network stream/datagram client/server process. Treated |
2697 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2698 | differences are in status display and process deletion. A network |
2699 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2700 | stop/continue it and deactivate/close it via delete-process */ |
2701 | ||
177c0ea7 JB |
2702 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2703 | 0, MANY, 0, | |
e690ca94 KS |
2704 | doc: /* Create and return a network server or client process. |
2705 | ||
fa9d4315 | 2706 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2707 | input and output work as for subprocesses and `delete-process' closes |
2708 | a network connection. However, a network process has no process id, | |
d22426e1 | 2709 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2710 | processes. |
2711 | ||
2712 | Arguments are specified as keyword/argument pairs. The following | |
2713 | arguments are defined: | |
2714 | ||
2715 | :name NAME -- NAME is name for process. It is modified if necessary | |
2716 | to make it unique. | |
2717 | ||
2718 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2719 | with the process. Process output goes at end of that buffer, unless | |
2720 | you specify an output stream or filter function to handle the output. | |
2721 | BUFFER may be also nil, meaning that this process is not associated | |
2722 | with any buffer. | |
2723 | ||
2724 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2725 | address. The symbol `local' specifies the local host. If specified | |
2726 | for a server process, it must be a valid name or address for the local | |
2727 | host, and only clients connecting to that address will be accepted. | |
2728 | ||
2729 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2730 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2731 | a random port number is selected for the server. (If Emacs was |
2732 | compiled with getaddrinfo, a port number can also be specified as a | |
2733 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2734 | |
9057ff80 | 2735 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2736 | stream type connection, `datagram' creates a datagram type connection, |
2737 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2738 | |
e690ca94 | 2739 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2740 | service specified by HOST and SERVICE. The default (nil) is to use |
2741 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2742 | and port number specified by HOST and SERVICE. Other address families | |
2743 | supported are: | |
e690ca94 | 2744 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2745 | ipv4 -- use IPv4 address family only. |
2746 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2747 | |
2748 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2749 | This parameter is ignored when opening a client process. When specified | |
2750 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2751 | ||
2752 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2753 | connection. This parameter is ignored when opening a stream server | |
2754 | process. For a datagram server process, it specifies the initial | |
2755 | setting of the remote datagram address. When specified for a client | |
2756 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2757 | ||
2758 | The format of ADDRESS depends on the address family: | |
2759 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2760 | corresponding to numeric IP address A.B.C.D and port number P. | |
2761 | - A local address is represented as a string with the address in the | |
2762 | local address space. | |
2763 | - An "unsupported family" address is represented by a cons (F . AV) | |
2764 | where F is the family number and AV is a vector containing the socket | |
2765 | address data with one element per address data byte. Do not rely on | |
2766 | this format in portable code, as it may depend on implementation | |
2767 | defined constants, data sizes, and data structure alignment. | |
2768 | ||
6b61353c KH |
2769 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2770 | system used for both reading and writing for this process. If CODING | |
2771 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2772 | ENCODING is used for writing. | |
e690ca94 KS |
2773 | |
2774 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2775 | return without waiting for the connection to complete; instead, the | |
2776 | sentinel function will be called with second arg matching "open" (if | |
2777 | successful) or "failed" when the connect completes. Default is to use | |
2778 | a blocking connect (i.e. wait) for stream type connections. | |
2779 | ||
2780 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2781 | running when Emacs is exited. |
e690ca94 KS |
2782 | |
2783 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2784 | In the stopped state, a server process does not accept new | |
2785 | connections, and a client process does not handle incoming traffic. | |
2786 | The stopped state is cleared by `continue-process' and set by | |
2787 | `stop-process'. | |
2788 | ||
2789 | :filter FILTER -- Install FILTER as the process filter. | |
2790 | ||
7392e23c KS |
2791 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2792 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2793 | If this keyword is not specified, the strings are multibyte if |
03f04413 KH |
2794 | `default-enable-multibyte-characters' is non-nil. |
2795 | ||
e690ca94 KS |
2796 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2797 | ||
2798 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2799 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2800 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2801 | is the server process, CLIENT is the new process for the connection, | |
2802 | and MESSAGE is a string. | |
2803 | ||
faa7db08 | 2804 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2805 | |
6b61353c | 2806 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2807 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2808 | If QLEN is an integer, it is used as the max. length of the server's |
2809 | pending connection queue (also known as the backlog); the default | |
2810 | queue length is 5. Default is to create a client process. | |
2811 | ||
2812 | The following network options can be specified for this connection: | |
2813 | ||
2814 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2815 | :dontroute BOOL -- Only send to directly connected hosts. | |
2816 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2817 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2818 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2819 | :priority INT -- Set protocol defined priority for sent packets. | |
2820 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2821 | (this is allowed by default for a server process). | |
2822 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2823 | special privileges on some systems. | |
2824 | ||
2825 | Consult the relevant system programmer's manual pages for more | |
2826 | information on using these options. | |
2827 | ||
2828 | ||
2829 | A server process will listen for and accept connections from clients. | |
2830 | When a client connection is accepted, a new network process is created | |
2831 | for the connection with the following parameters: | |
e690ca94 | 2832 | |
e690ca94 KS |
2833 | - The client's process name is constructed by concatenating the server |
2834 | process' NAME and a client identification string. | |
2835 | - If the FILTER argument is non-nil, the client process will not get a | |
2836 | separate process buffer; otherwise, the client's process buffer is a newly | |
2837 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2838 | NAME concatenated with the client identification string. |
e690ca94 KS |
2839 | - The connection type and the process filter and sentinel parameters are |
2840 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2841 | - The client process' contact info is set according to the client's | |
2842 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2843 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2844 | |
2845 | Notice that the FILTER and SENTINEL args are never used directly by | |
2846 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2847 | the server process, but via the optional :log function, accepted (and |
2848 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2849 | |
365aee82 KS |
2850 | The original argument list, modified with the actual connection |
2851 | information, is available via the `process-contact' function. | |
365aee82 | 2852 | |
fa9d4315 | 2853 | usage: (make-network-process &rest ARGS) */) |
f66c7cf8 | 2854 | (ptrdiff_t nargs, Lisp_Object *args) |
d0d6b7c5 JB |
2855 | { |
2856 | Lisp_Object proc; | |
e690ca94 KS |
2857 | Lisp_Object contact; |
2858 | struct Lisp_Process *p; | |
70dbdb36 | 2859 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2860 | struct addrinfo ai, *res, *lres; |
e1652a86 | 2861 | struct addrinfo hints; |
8ea90aa3 DN |
2862 | const char *portstring; |
2863 | char portbuf[128]; | |
70dbdb36 | 2864 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2865 | struct _emacs_addrinfo |
2866 | { | |
2867 | int ai_family; | |
2868 | int ai_socktype; | |
2869 | int ai_protocol; | |
2870 | int ai_addrlen; | |
2871 | struct sockaddr *ai_addr; | |
2872 | struct _emacs_addrinfo *ai_next; | |
2873 | } ai, *res, *lres; | |
418b48fd | 2874 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2875 | struct sockaddr_in address_in; |
2876 | #ifdef HAVE_LOCAL_SOCKETS | |
2877 | struct sockaddr_un address_un; | |
2878 | #endif | |
2879 | int port; | |
dd2a17ab KS |
2880 | int ret = 0; |
2881 | int xerrno = 0; | |
418b48fd | 2882 | int s = -1, outch, inch; |
e690ca94 | 2883 | struct gcpro gcpro1; |
aed13378 | 2884 | int count = SPECPDL_INDEX (); |
5684cd6e | 2885 | int count1; |
e690ca94 KS |
2886 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2887 | Lisp_Object tem; | |
2888 | Lisp_Object name, buffer, host, service, address; | |
2889 | Lisp_Object filter, sentinel; | |
2890 | int is_non_blocking_client = 0; | |
6b61353c | 2891 | int is_server = 0, backlog = 5; |
9057ff80 | 2892 | int socktype; |
e690ca94 KS |
2893 | int family = -1; |
2894 | ||
2895 | if (nargs == 0) | |
2896 | return Qnil; | |
dd2a17ab | 2897 | |
e690ca94 KS |
2898 | /* Save arguments for process-contact and clone-process. */ |
2899 | contact = Flist (nargs, args); | |
2900 | GCPRO1 (contact); | |
2901 | ||
bff3ed0a RS |
2902 | #ifdef WINDOWSNT |
2903 | /* Ensure socket support is loaded if available. */ | |
2904 | init_winsock (TRUE); | |
2905 | #endif | |
2906 | ||
9057ff80 KS |
2907 | /* :type TYPE (nil: stream, datagram */ |
2908 | tem = Fplist_get (contact, QCtype); | |
2909 | if (NILP (tem)) | |
2910 | socktype = SOCK_STREAM; | |
2911 | #ifdef DATAGRAM_SOCKETS | |
2912 | else if (EQ (tem, Qdatagram)) | |
2913 | socktype = SOCK_DGRAM; | |
f00c449b SM |
2914 | #endif |
2915 | #ifdef HAVE_SEQPACKET | |
2916 | else if (EQ (tem, Qseqpacket)) | |
2917 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 2918 | #endif |
9057ff80 KS |
2919 | else |
2920 | error ("Unsupported connection type"); | |
e690ca94 KS |
2921 | |
2922 | /* :server BOOL */ | |
2923 | tem = Fplist_get (contact, QCserver); | |
2924 | if (!NILP (tem)) | |
2925 | { | |
75728599 JR |
2926 | /* Don't support network sockets when non-blocking mode is |
2927 | not available, since a blocked Emacs is not useful. */ | |
5e617bc2 | 2928 | #if !defined (O_NONBLOCK) && !defined (O_NDELAY) |
e690ca94 KS |
2929 | error ("Network servers not supported"); |
2930 | #else | |
2931 | is_server = 1; | |
6b61353c KH |
2932 | if (INTEGERP (tem)) |
2933 | backlog = XINT (tem); | |
e690ca94 KS |
2934 | #endif |
2935 | } | |
2936 | ||
2937 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2938 | QCaddress = is_server ? QClocal : QCremote; | |
2939 | ||
d7e344cd | 2940 | /* :nowait BOOL */ |
84b31826 | 2941 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
2942 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
2943 | { | |
2944 | #ifndef NON_BLOCKING_CONNECT | |
2945 | error ("Non-blocking connect not supported"); | |
2946 | #else | |
2947 | is_non_blocking_client = 1; | |
2948 | #endif | |
2949 | } | |
2950 | ||
2951 | name = Fplist_get (contact, QCname); | |
2952 | buffer = Fplist_get (contact, QCbuffer); | |
2953 | filter = Fplist_get (contact, QCfilter); | |
2954 | sentinel = Fplist_get (contact, QCsentinel); | |
2955 | ||
b7826503 | 2956 | CHECK_STRING (name); |
e690ca94 | 2957 | |
e690ca94 KS |
2958 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
2959 | ai.ai_socktype = socktype; | |
2960 | ai.ai_protocol = 0; | |
2961 | ai.ai_next = NULL; | |
2962 | res = &ai; | |
a319f7c1 | 2963 | |
e690ca94 KS |
2964 | /* :local ADDRESS or :remote ADDRESS */ |
2965 | address = Fplist_get (contact, QCaddress); | |
2966 | if (!NILP (address)) | |
a319f7c1 | 2967 | { |
e690ca94 KS |
2968 | host = service = Qnil; |
2969 | ||
2970 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2971 | error ("Malformed :address"); | |
2972 | ai.ai_family = family; | |
2973 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2974 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2975 | goto open_socket; | |
a319f7c1 | 2976 | } |
e690ca94 KS |
2977 | |
2978 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2979 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 2980 | if (NILP (tem)) |
a319f7c1 | 2981 | { |
5e617bc2 | 2982 | #if defined (HAVE_GETADDRINFO) && defined (AF_INET6) |
e1652a86 KS |
2983 | family = AF_UNSPEC; |
2984 | #else | |
2985 | family = AF_INET; | |
e690ca94 | 2986 | #endif |
a319f7c1 | 2987 | } |
e1652a86 KS |
2988 | #ifdef HAVE_LOCAL_SOCKETS |
2989 | else if (EQ (tem, Qlocal)) | |
2990 | family = AF_LOCAL; | |
2991 | #endif | |
2992 | #ifdef AF_INET6 | |
2993 | else if (EQ (tem, Qipv6)) | |
2994 | family = AF_INET6; | |
2995 | #endif | |
2996 | else if (EQ (tem, Qipv4)) | |
2997 | family = AF_INET; | |
2998 | else if (INTEGERP (tem)) | |
2999 | family = XINT (tem); | |
3000 | else | |
e690ca94 | 3001 | error ("Unknown address family"); |
e1652a86 | 3002 | |
e690ca94 KS |
3003 | ai.ai_family = family; |
3004 | ||
3005 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3006 | service = Fplist_get (contact, QCservice); | |
3007 | ||
66a9f7f4 SM |
3008 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3009 | host = Fplist_get (contact, QChost); | |
3010 | if (!NILP (host)) | |
3011 | { | |
3012 | if (EQ (host, Qlocal)) | |
ba3033ee JB |
3013 | /* Depending on setup, "localhost" may map to different IPv4 and/or |
3014 | IPv6 addresses, so it's better to be explicit. (Bug#6781) */ | |
3015 | host = build_string ("127.0.0.1"); | |
66a9f7f4 SM |
3016 | CHECK_STRING (host); |
3017 | } | |
3018 | ||
e690ca94 KS |
3019 | #ifdef HAVE_LOCAL_SOCKETS |
3020 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3021 | { |
66a9f7f4 SM |
3022 | if (!NILP (host)) |
3023 | { | |
3024 | message (":family local ignores the :host \"%s\" property", | |
3025 | SDATA (host)); | |
3026 | contact = Fplist_put (contact, QChost, Qnil); | |
3027 | host = Qnil; | |
3028 | } | |
b7826503 | 3029 | CHECK_STRING (service); |
72af86bd | 3030 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3031 | address_un.sun_family = AF_LOCAL; |
42a5b22f | 3032 | strncpy (address_un.sun_path, SSDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
3033 | ai.ai_addr = (struct sockaddr *) &address_un; |
3034 | ai.ai_addrlen = sizeof address_un; | |
3035 | goto open_socket; | |
d0d6b7c5 | 3036 | } |
e690ca94 | 3037 | #endif |
a319f7c1 | 3038 | |
798b64bb KH |
3039 | /* Slow down polling to every ten seconds. |
3040 | Some kernels have a bug which causes retrying connect to fail | |
3041 | after a connect. Polling can interfere with gethostbyname too. */ | |
3042 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3043 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3044 | { |
3045 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3046 | bind_polling_period (10); | |
3047 | } | |
798b64bb KH |
3048 | #endif |
3049 | ||
a319f7c1 | 3050 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3051 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3052 | Otherwise, use getservbyname to lookup the service. */ | |
3053 | if (!NILP (host)) | |
3054 | { | |
3055 | ||
3056 | /* SERVICE can either be a string or int. | |
3057 | Convert to a C string for later use by getaddrinfo. */ | |
3058 | if (EQ (service, Qt)) | |
3059 | portstring = "0"; | |
3060 | else if (INTEGERP (service)) | |
3061 | { | |
c2982e87 | 3062 | sprintf (portbuf, "%"pI"d", XINT (service)); |
e690ca94 KS |
3063 | portstring = portbuf; |
3064 | } | |
3065 | else | |
3066 | { | |
3067 | CHECK_STRING (service); | |
42a5b22f | 3068 | portstring = SSDATA (service); |
e690ca94 KS |
3069 | } |
3070 | ||
3071 | immediate_quit = 1; | |
3072 | QUIT; | |
3073 | memset (&hints, 0, sizeof (hints)); | |
3074 | hints.ai_flags = 0; | |
e1652a86 | 3075 | hints.ai_family = family; |
e690ca94 KS |
3076 | hints.ai_socktype = socktype; |
3077 | hints.ai_protocol = 0; | |
08116b48 CY |
3078 | |
3079 | #ifdef HAVE_RES_INIT | |
3080 | res_init (); | |
3081 | #endif | |
3082 | ||
42a5b22f | 3083 | ret = getaddrinfo (SSDATA (host), portstring, &hints, &res); |
e690ca94 | 3084 | if (ret) |
f6270f62 | 3085 | #ifdef HAVE_GAI_STRERROR |
42a5b22f | 3086 | error ("%s/%s %s", SSDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3087 | #else |
42a5b22f | 3088 | error ("%s/%s getaddrinfo error %d", SSDATA (host), portstring, ret); |
f6270f62 | 3089 | #endif |
e690ca94 | 3090 | immediate_quit = 0; |
a319f7c1 | 3091 | |
e690ca94 KS |
3092 | goto open_socket; |
3093 | } | |
3094 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3095 | |
e690ca94 KS |
3096 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3097 | has been specified (e.g. for a local server process). */ | |
3098 | ||
3099 | if (EQ (service, Qt)) | |
3100 | port = 0; | |
3101 | else if (INTEGERP (service)) | |
3102 | port = htons ((unsigned short) XINT (service)); | |
3103 | else | |
616da37c | 3104 | { |
e690ca94 KS |
3105 | struct servent *svc_info; |
3106 | CHECK_STRING (service); | |
42a5b22f | 3107 | svc_info = getservbyname (SSDATA (service), |
e690ca94 KS |
3108 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3109 | if (svc_info == 0) | |
d5db4077 | 3110 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3111 | port = svc_info->s_port; |
3112 | } | |
3113 | ||
72af86bd | 3114 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3115 | address_in.sin_family = family; |
3116 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3117 | address_in.sin_port = port; | |
3118 | ||
3119 | #ifndef HAVE_GETADDRINFO | |
3120 | if (!NILP (host)) | |
3121 | { | |
3122 | struct hostent *host_info_ptr; | |
3123 | ||
c5e87d10 | 3124 | /* gethostbyname may fail with TRY_AGAIN, but we don't honor that, |
f3d9532b | 3125 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3126 | immediate_quit = 1; |
3127 | QUIT; | |
08116b48 CY |
3128 | |
3129 | #ifdef HAVE_RES_INIT | |
3130 | res_init (); | |
3131 | #endif | |
3132 | ||
d5db4077 | 3133 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3134 | immediate_quit = 0; |
177c0ea7 | 3135 | |
e690ca94 KS |
3136 | if (host_info_ptr) |
3137 | { | |
72af86bd AS |
3138 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3139 | host_info_ptr->h_length); | |
e690ca94 KS |
3140 | family = host_info_ptr->h_addrtype; |
3141 | address_in.sin_family = family; | |
3142 | } | |
3143 | else | |
3144 | /* Attempt to interpret host as numeric inet address */ | |
3145 | { | |
4624371d | 3146 | unsigned long numeric_addr; |
51b59d79 | 3147 | numeric_addr = inet_addr (SSDATA (host)); |
4624371d | 3148 | if (numeric_addr == -1) |
d5db4077 | 3149 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3150 | |
72af86bd AS |
3151 | memcpy (&address_in.sin_addr, &numeric_addr, |
3152 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3153 | } |
d0d6b7c5 | 3154 | |
e690ca94 | 3155 | } |
dd2a17ab | 3156 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3157 | |
e690ca94 KS |
3158 | ai.ai_family = family; |
3159 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3160 | ai.ai_addrlen = sizeof address_in; | |
3161 | ||
3162 | open_socket: | |
3163 | ||
dd2a17ab | 3164 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3165 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3166 | s = -1; |
457a9bee | 3167 | |
dd2a17ab KS |
3168 | for (lres = res; lres; lres = lres->ai_next) |
3169 | { | |
f66c7cf8 | 3170 | ptrdiff_t optn; |
c5101a77 | 3171 | int optbits; |
6b61353c | 3172 | |
4dc343ee | 3173 | #ifdef WINDOWSNT |
649dbf36 | 3174 | retry_connect: |
4dc343ee | 3175 | #endif |
649dbf36 | 3176 | |
dd2a17ab KS |
3177 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3178 | if (s < 0) | |
3179 | { | |
3180 | xerrno = errno; | |
3181 | continue; | |
3182 | } | |
0f2ee0c1 | 3183 | |
e690ca94 KS |
3184 | #ifdef DATAGRAM_SOCKETS |
3185 | if (!is_server && socktype == SOCK_DGRAM) | |
3186 | break; | |
3187 | #endif /* DATAGRAM_SOCKETS */ | |
3188 | ||
dd2a17ab | 3189 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3190 | if (is_non_blocking_client) |
dd2a17ab KS |
3191 | { |
3192 | #ifdef O_NONBLOCK | |
3193 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3194 | #else | |
3195 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3196 | #endif | |
3197 | if (ret < 0) | |
3198 | { | |
3199 | xerrno = errno; | |
3200 | emacs_close (s); | |
3201 | s = -1; | |
3202 | continue; | |
3203 | } | |
3204 | } | |
3205 | #endif | |
177c0ea7 | 3206 | |
dd2a17ab | 3207 | /* Make us close S if quit. */ |
dd2a17ab KS |
3208 | record_unwind_protect (close_file_unwind, make_number (s)); |
3209 | ||
6b61353c KH |
3210 | /* Parse network options in the arg list. |
3211 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3212 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3213 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3214 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3215 | ||
e690ca94 KS |
3216 | if (is_server) |
3217 | { | |
3218 | /* Configure as a server socket. */ | |
6b61353c KH |
3219 | |
3220 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3221 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3222 | #ifdef HAVE_LOCAL_SOCKETS |
3223 | if (family != AF_LOCAL) | |
3224 | #endif | |
6b61353c KH |
3225 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3226 | { | |
3227 | int optval = 1; | |
3228 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3229 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3230 | } | |
177c0ea7 | 3231 | |
e690ca94 KS |
3232 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3233 | report_file_error ("Cannot bind server socket", Qnil); | |
3234 | ||
3235 | #ifdef HAVE_GETSOCKNAME | |
3236 | if (EQ (service, Qt)) | |
3237 | { | |
3238 | struct sockaddr_in sa1; | |
401bf9b4 | 3239 | socklen_t len1 = sizeof (sa1); |
e690ca94 KS |
3240 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3241 | { | |
3242 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3243 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3244 | contact = Fplist_put (contact, QCservice, service); |
3245 | } | |
3246 | } | |
3247 | #endif | |
3248 | ||
84b31826 | 3249 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3250 | report_file_error ("Cannot listen on server socket", Qnil); |
3251 | ||
3252 | break; | |
3253 | } | |
3254 | ||
dd2a17ab KS |
3255 | immediate_quit = 1; |
3256 | QUIT; | |
3257 | ||
dd2a17ab KS |
3258 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3259 | xerrno = errno; | |
3260 | ||
dd2a17ab KS |
3261 | if (ret == 0 || xerrno == EISCONN) |
3262 | { | |
dd2a17ab KS |
3263 | /* The unwind-protect will be discarded afterwards. |
3264 | Likewise for immediate_quit. */ | |
3265 | break; | |
3266 | } | |
3267 | ||
3268 | #ifdef NON_BLOCKING_CONNECT | |
3269 | #ifdef EINPROGRESS | |
e690ca94 | 3270 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3271 | break; |
3272 | #else | |
3273 | #ifdef EWOULDBLOCK | |
e690ca94 | 3274 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3275 | break; |
3276 | #endif | |
3277 | #endif | |
3278 | #endif | |
649dbf36 CY |
3279 | |
3280 | #ifndef WINDOWSNT | |
cd591dbc HE |
3281 | if (xerrno == EINTR) |
3282 | { | |
3283 | /* Unlike most other syscalls connect() cannot be called | |
3284 | again. (That would return EALREADY.) The proper way to | |
3285 | wait for completion is select(). */ | |
401bf9b4 PE |
3286 | int sc; |
3287 | socklen_t len; | |
cd591dbc HE |
3288 | SELECT_TYPE fdset; |
3289 | retry_select: | |
3290 | FD_ZERO (&fdset); | |
3291 | FD_SET (s, &fdset); | |
3292 | QUIT; | |
3293 | sc = select (s + 1, (SELECT_TYPE *)0, &fdset, (SELECT_TYPE *)0, | |
3294 | (EMACS_TIME *)0); | |
3295 | if (sc == -1) | |
3296 | { | |
649dbf36 | 3297 | if (errno == EINTR) |
cd591dbc | 3298 | goto retry_select; |
649dbf36 | 3299 | else |
cd591dbc HE |
3300 | report_file_error ("select failed", Qnil); |
3301 | } | |
3302 | eassert (sc > 0); | |
649dbf36 CY |
3303 | |
3304 | len = sizeof xerrno; | |
3305 | eassert (FD_ISSET (s, &fdset)); | |
3306 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3307 | report_file_error ("getsockopt failed", Qnil); | |
3308 | if (xerrno) | |
3309 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3310 | else | |
3311 | break; | |
cd591dbc | 3312 | } |
649dbf36 | 3313 | #endif /* !WINDOWSNT */ |
e333e864 | 3314 | |
0f2ee0c1 RS |
3315 | immediate_quit = 0; |
3316 | ||
dd2a17ab | 3317 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3318 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3319 | emacs_close (s); |
dd2a17ab | 3320 | s = -1; |
649dbf36 CY |
3321 | |
3322 | #ifdef WINDOWSNT | |
3323 | if (xerrno == EINTR) | |
3324 | goto retry_connect; | |
3325 | #endif | |
dd2a17ab | 3326 | } |
457a9bee | 3327 | |
e690ca94 KS |
3328 | if (s >= 0) |
3329 | { | |
3330 | #ifdef DATAGRAM_SOCKETS | |
3331 | if (socktype == SOCK_DGRAM) | |
3332 | { | |
3333 | if (datagram_address[s].sa) | |
3334 | abort (); | |
3335 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3336 | datagram_address[s].len = lres->ai_addrlen; | |
3337 | if (is_server) | |
3338 | { | |
3339 | Lisp_Object remote; | |
72af86bd | 3340 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3341 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3342 | { | |
3343 | int rfamily, rlen; | |
3344 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3345 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3346 | conv_lisp_to_sockaddr (rfamily, remote, | |
3347 | datagram_address[s].sa, rlen); | |
3348 | } | |
3349 | } | |
3350 | else | |
72af86bd | 3351 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3352 | } |
3353 | #endif | |
177c0ea7 | 3354 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3355 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3356 | #ifdef HAVE_GETSOCKNAME |
3357 | if (!is_server) | |
3358 | { | |
3359 | struct sockaddr_in sa1; | |
401bf9b4 | 3360 | socklen_t len1 = sizeof (sa1); |
2185db04 KS |
3361 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) |
3362 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3363 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3364 | } |
3365 | #endif | |
e690ca94 KS |
3366 | } |
3367 | ||
54b3b62f YM |
3368 | immediate_quit = 0; |
3369 | ||
dd2a17ab | 3370 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3371 | if (res != &ai) |
54b3b62f YM |
3372 | { |
3373 | BLOCK_INPUT; | |
3374 | freeaddrinfo (res); | |
3375 | UNBLOCK_INPUT; | |
3376 | } | |
dd2a17ab KS |
3377 | #endif |
3378 | ||
e690ca94 KS |
3379 | /* Discard the unwind protect for closing S, if any. */ |
3380 | specpdl_ptr = specpdl + count1; | |
3381 | ||
3382 | /* Unwind bind_polling_period and request_sigio. */ | |
3383 | unbind_to (count, Qnil); | |
3384 | ||
dd2a17ab KS |
3385 | if (s < 0) |
3386 | { | |
dd2a17ab KS |
3387 | /* If non-blocking got this far - and failed - assume non-blocking is |
3388 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3389 | the normal blocking calls to open-network-stream handles this error |
3390 | better. */ | |
3391 | if (is_non_blocking_client) | |
dd2a17ab | 3392 | return Qnil; |
dd2a17ab | 3393 | |
d0d6b7c5 | 3394 | errno = xerrno; |
e690ca94 KS |
3395 | if (is_server) |
3396 | report_file_error ("make server process failed", contact); | |
3397 | else | |
3398 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3399 | } |
44ade2e9 | 3400 | |
d0d6b7c5 | 3401 | inch = s; |
59f23005 | 3402 | outch = s; |
d0d6b7c5 JB |
3403 | |
3404 | if (!NILP (buffer)) | |
3405 | buffer = Fget_buffer_create (buffer); | |
3406 | proc = make_process (name); | |
3407 | ||
3408 | chan_process[inch] = proc; | |
3409 | ||
3410 | #ifdef O_NONBLOCK | |
3411 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3412 | #else | |
3413 | #ifdef O_NDELAY | |
3414 | fcntl (inch, F_SETFL, O_NDELAY); | |
3415 | #endif | |
3416 | #endif | |
3417 | ||
e690ca94 KS |
3418 | p = XPROCESS (proc); |
3419 | ||
3420 | p->childp = contact; | |
faa7db08 | 3421 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
d888760c | 3422 | p->type = Qnetwork; |
177c0ea7 | 3423 | |
e690ca94 KS |
3424 | p->buffer = buffer; |
3425 | p->sentinel = sentinel; | |
3426 | p->filter = filter; | |
3427 | p->log = Fplist_get (contact, QClog); | |
3428 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
60f0fb11 | 3429 | p->kill_without_query = 1; |
e690ca94 KS |
3430 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
3431 | p->command = Qt; | |
6bfd98e7 | 3432 | p->pid = 0; |
60f0fb11 SM |
3433 | p->infd = inch; |
3434 | p->outfd = outch; | |
84b31826 | 3435 | if (is_server && socktype != SOCK_DGRAM) |
e690ca94 | 3436 | p->status = Qlisten; |
dd2a17ab | 3437 | |
f523e0c3 SM |
3438 | /* Make the process marker point into the process buffer (if any). */ |
3439 | if (BUFFERP (buffer)) | |
3440 | set_marker_both (p->mark, buffer, | |
3441 | BUF_ZV (XBUFFER (buffer)), | |
3442 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3443 | ||
dd2a17ab | 3444 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3445 | if (is_non_blocking_client) |
dd2a17ab KS |
3446 | { |
3447 | /* We may get here if connect did succeed immediately. However, | |
3448 | in that case, we still need to signal this like a non-blocking | |
3449 | connection. */ | |
e690ca94 | 3450 | p->status = Qconnect; |
dd2a17ab KS |
3451 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3452 | { | |
3453 | FD_SET (inch, &connect_wait_mask); | |
3fad2ad2 | 3454 | FD_SET (inch, &write_mask); |
dd2a17ab KS |
3455 | num_pending_connects++; |
3456 | } | |
3457 | } | |
3458 | else | |
3459 | #endif | |
e690ca94 KS |
3460 | /* A server may have a client filter setting of Qt, but it must |
3461 | still listen for incoming connects unless it is stopped. */ | |
3462 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3463 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3464 | { |
3465 | FD_SET (inch, &input_wait_mask); | |
3466 | FD_SET (inch, &non_keyboard_wait_mask); | |
3467 | } | |
3468 | ||
7d0e672e RS |
3469 | if (inch > max_process_desc) |
3470 | max_process_desc = inch; | |
d0d6b7c5 | 3471 | |
e690ca94 KS |
3472 | tem = Fplist_member (contact, QCcoding); |
3473 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3474 | tem = Qnil; /* No error message (too late!). */ | |
3475 | ||
67918941 RS |
3476 | { |
3477 | /* Setup coding systems for communicating with the network stream. */ | |
dbf31225 | 3478 | struct gcpro gcpro1; |
67918941 RS |
3479 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
3480 | Lisp_Object coding_systems = Qt; | |
b93aacde | 3481 | Lisp_Object fargs[5], val; |
67918941 | 3482 | |
e690ca94 | 3483 | if (!NILP (tem)) |
6b61353c KH |
3484 | { |
3485 | val = XCAR (XCDR (tem)); | |
3486 | if (CONSP (val)) | |
3487 | val = XCAR (val); | |
3488 | } | |
e690ca94 | 3489 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3490 | val = Vcoding_system_for_read; |
4b4deea2 TT |
3491 | else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters))) |
3492 | || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))) | |
67918941 RS |
3493 | /* We dare not decode end-of-line format by setting VAL to |
3494 | Qraw_text, because the existing Emacs Lisp libraries | |
3495 | assume that they receive bare code including a sequene of | |
3496 | CR LF. */ | |
3497 | val = Qnil; | |
3498 | else | |
3499 | { | |
991234f0 KS |
3500 | if (NILP (host) || NILP (service)) |
3501 | coding_systems = Qnil; | |
3502 | else | |
3503 | { | |
b93aacde PE |
3504 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3505 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3506 | GCPRO1 (proc); |
b93aacde | 3507 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3508 | UNGCPRO; |
991234f0 | 3509 | } |
67918941 | 3510 | if (CONSP (coding_systems)) |
70949dac | 3511 | val = XCAR (coding_systems); |
67918941 | 3512 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3513 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3514 | else |
3515 | val = Qnil; | |
3516 | } | |
e690ca94 | 3517 | p->decode_coding_system = val; |
0fa1789e | 3518 | |
e690ca94 | 3519 | if (!NILP (tem)) |
6b61353c KH |
3520 | { |
3521 | val = XCAR (XCDR (tem)); | |
3522 | if (CONSP (val)) | |
3523 | val = XCDR (val); | |
3524 | } | |
e690ca94 | 3525 | else if (!NILP (Vcoding_system_for_write)) |
67918941 | 3526 | val = Vcoding_system_for_write; |
4b4deea2 | 3527 | else if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
67918941 RS |
3528 | val = Qnil; |
3529 | else | |
3530 | { | |
3531 | if (EQ (coding_systems, Qt)) | |
3532 | { | |
991234f0 KS |
3533 | if (NILP (host) || NILP (service)) |
3534 | coding_systems = Qnil; | |
3535 | else | |
3536 | { | |
b93aacde PE |
3537 | fargs[0] = Qopen_network_stream, fargs[1] = name, |
3538 | fargs[2] = buffer, fargs[3] = host, fargs[4] = service; | |
dbf31225 | 3539 | GCPRO1 (proc); |
b93aacde | 3540 | coding_systems = Ffind_operation_coding_system (5, fargs); |
dbf31225 | 3541 | UNGCPRO; |
991234f0 | 3542 | } |
67918941 RS |
3543 | } |
3544 | if (CONSP (coding_systems)) | |
70949dac | 3545 | val = XCDR (coding_systems); |
67918941 | 3546 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3547 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3548 | else |
3549 | val = Qnil; | |
3550 | } | |
e690ca94 | 3551 | p->encode_coding_system = val; |
67918941 | 3552 | } |
03f04413 | 3553 | setup_process_coding_systems (proc); |
0fa1789e | 3554 | |
cbe81f1d | 3555 | p->decoding_buf = empty_unibyte_string; |
60f0fb11 | 3556 | p->decoding_carryover = 0; |
cbe81f1d | 3557 | p->encoding_buf = empty_unibyte_string; |
0fa1789e | 3558 | |
e690ca94 | 3559 | p->inherit_coding_system_flag |
e6fca843 | 3560 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3561 | |
d0d6b7c5 JB |
3562 | UNGCPRO; |
3563 | return proc; | |
3564 | } | |
d0d6b7c5 | 3565 | |
6b61353c | 3566 | \f |
5e617bc2 | 3567 | #if defined (HAVE_NET_IF_H) |
6b61353c KH |
3568 | |
3569 | #ifdef SIOCGIFCONF | |
3570 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3571 | doc: /* Return an alist of all network interfaces and their network address. | |
3572 | Each element is a cons, the car of which is a string containing the | |
3573 | interface name, and the cdr is the network address in internal | |
3574 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3575 | (void) |
6b61353c KH |
3576 | { |
3577 | struct ifconf ifconf; | |
377538cb JD |
3578 | struct ifreq *ifreq; |
3579 | void *buf = NULL; | |
70c60eb2 PE |
3580 | ptrdiff_t buf_size = 512; |
3581 | int s, i; | |
6b61353c KH |
3582 | Lisp_Object res; |
3583 | ||
3584 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3585 | if (s < 0) | |
3586 | return Qnil; | |
3587 | ||
76667214 | 3588 | do |
6b61353c | 3589 | { |
76667214 PE |
3590 | buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1); |
3591 | ifconf.ifc_buf = buf; | |
3592 | ifconf.ifc_len = buf_size; | |
156bffbe AS |
3593 | if (ioctl (s, SIOCGIFCONF, &ifconf)) |
3594 | { | |
3595 | close (s); | |
76667214 | 3596 | xfree (buf); |
156bffbe AS |
3597 | return Qnil; |
3598 | } | |
6b61353c | 3599 | } |
76667214 | 3600 | while (ifconf.ifc_len == buf_size); |
6b61353c KH |
3601 | |
3602 | close (s); | |
6b61353c KH |
3603 | |
3604 | res = Qnil; | |
156bffbe AS |
3605 | ifreq = ifconf.ifc_req; |
3606 | while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len) | |
6b61353c | 3607 | { |
377538cb JD |
3608 | struct ifreq *ifq = ifreq; |
3609 | #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN | |
156bffbe AS |
3610 | #define SIZEOF_IFREQ(sif) \ |
3611 | ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \ | |
3612 | ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len) | |
377538cb JD |
3613 | |
3614 | int len = SIZEOF_IFREQ (ifq); | |
3615 | #else | |
3616 | int len = sizeof (*ifreq); | |
3617 | #endif | |
6b61353c | 3618 | char namebuf[sizeof (ifq->ifr_name) + 1]; |
377538cb | 3619 | i += len; |
156bffbe | 3620 | ifreq = (struct ifreq *) ((char *) ifreq + len); |
377538cb | 3621 | |
6b61353c KH |
3622 | if (ifq->ifr_addr.sa_family != AF_INET) |
3623 | continue; | |
377538cb | 3624 | |
72af86bd | 3625 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3626 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3627 | res = Fcons (Fcons (build_string (namebuf), | |
3628 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3629 | sizeof (struct sockaddr))), | |
3630 | res); | |
3631 | } | |
3632 | ||
377538cb | 3633 | xfree (buf); |
6b61353c KH |
3634 | return res; |
3635 | } | |
3636 | #endif /* SIOCGIFCONF */ | |
3637 | ||
5e617bc2 | 3638 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
6b61353c KH |
3639 | |
3640 | struct ifflag_def { | |
3641 | int flag_bit; | |
91433552 | 3642 | const char *flag_sym; |
6b61353c KH |
3643 | }; |
3644 | ||
91433552 | 3645 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3646 | #ifdef IFF_UP |
3647 | { IFF_UP, "up" }, | |
3648 | #endif | |
3649 | #ifdef IFF_BROADCAST | |
3650 | { IFF_BROADCAST, "broadcast" }, | |
3651 | #endif | |
3652 | #ifdef IFF_DEBUG | |
3653 | { IFF_DEBUG, "debug" }, | |
3654 | #endif | |
3655 | #ifdef IFF_LOOPBACK | |
3656 | { IFF_LOOPBACK, "loopback" }, | |
3657 | #endif | |
3658 | #ifdef IFF_POINTOPOINT | |
3659 | { IFF_POINTOPOINT, "pointopoint" }, | |
3660 | #endif | |
3661 | #ifdef IFF_RUNNING | |
3662 | { IFF_RUNNING, "running" }, | |
3663 | #endif | |
3664 | #ifdef IFF_NOARP | |
3665 | { IFF_NOARP, "noarp" }, | |
3666 | #endif | |
3667 | #ifdef IFF_PROMISC | |
3668 | { IFF_PROMISC, "promisc" }, | |
3669 | #endif | |
3670 | #ifdef IFF_NOTRAILERS | |
377538cb JD |
3671 | #ifdef NS_IMPL_COCOA |
3672 | /* Really means smart, notrailers is obsolete */ | |
3673 | { IFF_NOTRAILERS, "smart" }, | |
3674 | #else | |
6b61353c KH |
3675 | { IFF_NOTRAILERS, "notrailers" }, |
3676 | #endif | |
377538cb | 3677 | #endif |
6b61353c KH |
3678 | #ifdef IFF_ALLMULTI |
3679 | { IFF_ALLMULTI, "allmulti" }, | |
3680 | #endif | |
3681 | #ifdef IFF_MASTER | |
3682 | { IFF_MASTER, "master" }, | |
3683 | #endif | |
3684 | #ifdef IFF_SLAVE | |
3685 | { IFF_SLAVE, "slave" }, | |
3686 | #endif | |
3687 | #ifdef IFF_MULTICAST | |
3688 | { IFF_MULTICAST, "multicast" }, | |
3689 | #endif | |
3690 | #ifdef IFF_PORTSEL | |
3691 | { IFF_PORTSEL, "portsel" }, | |
3692 | #endif | |
3693 | #ifdef IFF_AUTOMEDIA | |
3694 | { IFF_AUTOMEDIA, "automedia" }, | |
3695 | #endif | |
3696 | #ifdef IFF_DYNAMIC | |
3697 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3698 | #endif |
2026418c YM |
3699 | #ifdef IFF_OACTIVE |
3700 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3701 | #endif |
3702 | #ifdef IFF_SIMPLEX | |
3703 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3704 | #endif | |
3705 | #ifdef IFF_LINK0 | |
3706 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3707 | #endif | |
3708 | #ifdef IFF_LINK1 | |
3709 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3710 | #endif | |
3711 | #ifdef IFF_LINK2 | |
3712 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3713 | #endif |
3714 | { 0, 0 } | |
3715 | }; | |
3716 | ||
3717 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3718 | doc: /* Return information about network interface named IFNAME. | |
3719 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3720 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
e4920bc9 | 3721 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and |
6b61353c | 3722 | FLAGS is the current flags of the interface. */) |
5842a27b | 3723 | (Lisp_Object ifname) |
6b61353c KH |
3724 | { |
3725 | struct ifreq rq; | |
3726 | Lisp_Object res = Qnil; | |
3727 | Lisp_Object elt; | |
3728 | int s; | |
3729 | int any = 0; | |
0a0d27fb PE |
3730 | #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \ |
3731 | && defined HAVE_GETIFADDRS && defined LLADDR) | |
377538cb JD |
3732 | struct ifaddrs *ifap; |
3733 | #endif | |
6b61353c KH |
3734 | |
3735 | CHECK_STRING (ifname); | |
3736 | ||
72af86bd | 3737 | memset (rq.ifr_name, 0, sizeof rq.ifr_name); |
0da49335 | 3738 | strncpy (rq.ifr_name, SSDATA (ifname), sizeof (rq.ifr_name)); |
6b61353c KH |
3739 | |
3740 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3741 | if (s < 0) | |
3742 | return Qnil; | |
3743 | ||
3744 | elt = Qnil; | |
5e617bc2 | 3745 | #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS) |
6b61353c KH |
3746 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3747 | { | |
3748 | int flags = rq.ifr_flags; | |
91433552 | 3749 | const struct ifflag_def *fp; |
6b61353c KH |
3750 | int fnum; |
3751 | ||
377538cb JD |
3752 | /* If flags is smaller than int (i.e. short) it may have the high bit set |
3753 | due to IFF_MULTICAST. In that case, sign extending it into | |
3754 | an int is wrong. */ | |
3755 | if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags)) | |
3756 | flags = (unsigned short) rq.ifr_flags; | |
3757 | ||
bc57d757 | 3758 | any = 1; |
82a80058 | 3759 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3760 | { |
3761 | if (flags & fp->flag_bit) | |
3762 | { | |
3763 | elt = Fcons (intern (fp->flag_sym), elt); | |
3764 | flags -= fp->flag_bit; | |
3765 | } | |
3766 | } | |
fa3c87e1 | 3767 | for (fnum = 0; flags && fnum < 32; flags >>= 1, fnum++) |
6b61353c | 3768 | { |
fa3c87e1 | 3769 | if (flags & 1) |
6b61353c KH |
3770 | { |
3771 | elt = Fcons (make_number (fnum), elt); | |
3772 | } | |
3773 | } | |
3774 | } | |
3775 | #endif | |
3776 | res = Fcons (elt, res); | |
3777 | ||
3778 | elt = Qnil; | |
5e617bc2 | 3779 | #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR) |
6b61353c KH |
3780 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3781 | { | |
3782 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3783 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3784 | int n; | |
3785 | ||
bc57d757 | 3786 | any = 1; |
6b61353c KH |
3787 | for (n = 0; n < 6; n++) |
3788 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3789 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3790 | } | |
5e617bc2 | 3791 | #elif defined (HAVE_GETIFADDRS) && defined (LLADDR) |
377538cb JD |
3792 | if (getifaddrs (&ifap) != -1) |
3793 | { | |
3794 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3795 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3796 | struct ifaddrs *it; | |
3797 | ||
3798 | for (it = ifap; it != NULL; it = it->ifa_next) | |
3799 | { | |
3800 | struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr; | |
3801 | unsigned char linkaddr[6]; | |
3802 | int n; | |
3803 | ||
3804 | if (it->ifa_addr->sa_family != AF_LINK | |
3805 | || strcmp (it->ifa_name, SSDATA (ifname)) != 0 | |
3806 | || sdl->sdl_alen != 6) | |
3807 | continue; | |
3808 | ||
5e617bc2 | 3809 | memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen); |
377538cb JD |
3810 | for (n = 0; n < 6; n++) |
3811 | p->contents[n] = make_number (linkaddr[n]); | |
3812 | ||
3813 | elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr); | |
3814 | break; | |
3815 | } | |
3816 | } | |
3817 | #ifdef HAVE_FREEIFADDRS | |
3818 | freeifaddrs (ifap); | |
6b61353c | 3819 | #endif |
377538cb JD |
3820 | |
3821 | #endif /* HAVE_GETIFADDRS && LLADDR */ | |
3822 | ||
6b61353c KH |
3823 | res = Fcons (elt, res); |
3824 | ||
3825 | elt = Qnil; | |
5e617bc2 | 3826 | #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3827 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3828 | { | |
bc57d757 | 3829 | any = 1; |
2026418c | 3830 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3831 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3832 | #else |
3833 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3834 | #endif | |
6b61353c KH |
3835 | } |
3836 | #endif | |
3837 | res = Fcons (elt, res); | |
3838 | ||
3839 | elt = Qnil; | |
5e617bc2 | 3840 | #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
6b61353c KH |
3841 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3842 | { | |
bc57d757 | 3843 | any = 1; |
6b61353c KH |
3844 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); |
3845 | } | |
3846 | #endif | |
3847 | res = Fcons (elt, res); | |
3848 | ||
3849 | elt = Qnil; | |
5e617bc2 | 3850 | #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR) |
6b61353c KH |
3851 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3852 | { | |
bc57d757 | 3853 | any = 1; |
6b61353c KH |
3854 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); |
3855 | } | |
3856 | #endif | |
3857 | res = Fcons (elt, res); | |
3858 | ||
3859 | close (s); | |
3860 | ||
3861 | return any ? res : Qnil; | |
3862 | } | |
3863 | #endif | |
5e617bc2 | 3864 | #endif /* defined (HAVE_NET_IF_H) */ |
6b61353c | 3865 | |
04391069 RS |
3866 | /* Turn off input and output for process PROC. */ |
3867 | ||
40ccffa6 | 3868 | static void |
d3da34e0 | 3869 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3870 | { |
3871 | register int inchannel, outchannel; | |
3872 | register struct Lisp_Process *p = XPROCESS (proc); | |
3873 | ||
9c6c6f49 CY |
3874 | #ifdef HAVE_GNUTLS |
3875 | /* Delete GnuTLS structures in PROC, if any. */ | |
3876 | emacs_gnutls_deinit (proc); | |
3877 | #endif /* HAVE_GNUTLS */ | |
3878 | ||
60f0fb11 SM |
3879 | inchannel = p->infd; |
3880 | outchannel = p->outfd; | |
d0d6b7c5 | 3881 | |
6b61353c | 3882 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3883 | if (p->read_output_delay > 0) |
6b61353c KH |
3884 | { |
3885 | if (--process_output_delay_count < 0) | |
3886 | process_output_delay_count = 0; | |
60f0fb11 SM |
3887 | p->read_output_delay = 0; |
3888 | p->read_output_skip = 0; | |
6b61353c KH |
3889 | } |
3890 | #endif | |
f3d9532b | 3891 | |
a9f2c884 | 3892 | if (inchannel >= 0) |
d0d6b7c5 JB |
3893 | { |
3894 | /* Beware SIGCHLD hereabouts. */ | |
3895 | flush_pending_output (inchannel); | |
68c45bf0 | 3896 | emacs_close (inchannel); |
a9f2c884 | 3897 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3898 | emacs_close (outchannel); |
d0d6b7c5 | 3899 | |
60f0fb11 SM |
3900 | p->infd = -1; |
3901 | p->outfd = -1; | |
e690ca94 KS |
3902 | #ifdef DATAGRAM_SOCKETS |
3903 | if (DATAGRAM_CHAN_P (inchannel)) | |
3904 | { | |
3905 | xfree (datagram_address[inchannel].sa); | |
3906 | datagram_address[inchannel].sa = 0; | |
3907 | datagram_address[inchannel].len = 0; | |
3908 | } | |
3909 | #endif | |
d0d6b7c5 JB |
3910 | chan_process[inchannel] = Qnil; |
3911 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3912 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3913 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3914 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3915 | { | |
3916 | FD_CLR (inchannel, &connect_wait_mask); | |
3fad2ad2 | 3917 | FD_CLR (inchannel, &write_mask); |
dd2a17ab KS |
3918 | if (--num_pending_connects < 0) |
3919 | abort (); | |
3920 | } | |
bad49fc7 | 3921 | #endif |
7d0e672e RS |
3922 | if (inchannel == max_process_desc) |
3923 | { | |
3924 | int i; | |
3925 | /* We just closed the highest-numbered process input descriptor, | |
3926 | so recompute the highest-numbered one now. */ | |
3927 | max_process_desc = 0; | |
3928 | for (i = 0; i < MAXDESC; i++) | |
3929 | if (!NILP (chan_process[i])) | |
3930 | max_process_desc = i; | |
3931 | } | |
d0d6b7c5 JB |
3932 | } |
3933 | } | |
3934 | ||
d0d6b7c5 JB |
3935 | \f |
3936 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3937 | 0, 4, 0, |
fdb82f93 PJ |
3938 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3939 | It is read into the process' buffers or given to their filter functions. | |
3940 | Non-nil arg PROCESS means do not return until some output has been received | |
3941 | from PROCESS. | |
5088da42 | 3942 | |
2a7bb882 MR |
3943 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
3944 | and milliseconds to wait; return after that much time whether or not | |
3945 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 3946 | it specifies a fractional number of seconds to wait. |
891bd142 | 3947 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 3948 | |
107ed38d KS |
3949 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3950 | from PROCESS, suspending reading output from other processes. | |
3951 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 3952 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 3953 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 3954 | { |
5088da42 | 3955 | int secs, usecs = 0; |
d0d6b7c5 | 3956 | |
0748d150 | 3957 | if (! NILP (process)) |
b7826503 | 3958 | CHECK_PROCESS (process); |
107ed38d KS |
3959 | else |
3960 | just_this_one = Qnil; | |
0748d150 | 3961 | |
891bd142 SM |
3962 | if (!NILP (millisec)) |
3963 | { /* Obsolete calling convention using integers rather than floats. */ | |
3964 | CHECK_NUMBER (millisec); | |
3965 | if (NILP (seconds)) | |
3966 | seconds = make_float (XINT (millisec) / 1000.0); | |
3967 | else | |
3968 | { | |
3969 | CHECK_NUMBER (seconds); | |
3970 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
3971 | } | |
3972 | } | |
3973 | ||
5088da42 | 3974 | if (!NILP (seconds)) |
d0d6b7c5 | 3975 | { |
5088da42 KS |
3976 | if (INTEGERP (seconds)) |
3977 | secs = XINT (seconds); | |
3978 | else if (FLOATP (seconds)) | |
3979 | { | |
3980 | double timeout = XFLOAT_DATA (seconds); | |
3981 | secs = (int) timeout; | |
3982 | usecs = (int) ((timeout - (double) secs) * 1000000); | |
3983 | } | |
3984 | else | |
3985 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 3986 | |
5088da42 KS |
3987 | if (secs < 0 || (secs == 0 && usecs == 0)) |
3988 | secs = -1, usecs = 0; | |
d0d6b7c5 JB |
3989 | } |
3990 | else | |
5088da42 | 3991 | secs = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
3992 | |
3993 | return | |
5088da42 | 3994 | (wait_reading_process_output (secs, usecs, 0, 0, |
214d6069 KS |
3995 | Qnil, |
3996 | !NILP (process) ? XPROCESS (process) : NULL, | |
3997 | NILP (just_this_one) ? 0 : | |
3998 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3999 | ? Qt : Qnil); |
4000 | } | |
4001 | ||
e690ca94 KS |
4002 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4003 | ||
4004 | static int connect_counter = 0; | |
4005 | ||
4006 | static void | |
d3da34e0 | 4007 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4008 | { |
4009 | Lisp_Object proc, caller, name, buffer; | |
4010 | Lisp_Object contact, host, service; | |
4011 | struct Lisp_Process *ps= XPROCESS (server); | |
4012 | struct Lisp_Process *p; | |
4013 | int s; | |
4014 | union u_sockaddr { | |
4015 | struct sockaddr sa; | |
4016 | struct sockaddr_in in; | |
e1652a86 KS |
4017 | #ifdef AF_INET6 |
4018 | struct sockaddr_in6 in6; | |
4019 | #endif | |
e690ca94 KS |
4020 | #ifdef HAVE_LOCAL_SOCKETS |
4021 | struct sockaddr_un un; | |
4022 | #endif | |
4023 | } saddr; | |
401bf9b4 | 4024 | socklen_t len = sizeof saddr; |
e690ca94 KS |
4025 | |
4026 | s = accept (channel, &saddr.sa, &len); | |
4027 | ||
4028 | if (s < 0) | |
4029 | { | |
4030 | int code = errno; | |
4031 | ||
4032 | if (code == EAGAIN) | |
4033 | return; | |
4034 | #ifdef EWOULDBLOCK | |
4035 | if (code == EWOULDBLOCK) | |
4036 | return; | |
4037 | #endif | |
4038 | ||
4039 | if (!NILP (ps->log)) | |
4040 | call3 (ps->log, server, Qnil, | |
4041 | concat3 (build_string ("accept failed with code"), | |
4042 | Fnumber_to_string (make_number (code)), | |
4043 | build_string ("\n"))); | |
4044 | return; | |
4045 | } | |
4046 | ||
4047 | connect_counter++; | |
4048 | ||
4049 | /* Setup a new process to handle the connection. */ | |
4050 | ||
4051 | /* Generate a unique identification of the caller, and build contact | |
4052 | information for this process. */ | |
4053 | host = Qt; | |
4054 | service = Qnil; | |
4055 | switch (saddr.sa.sa_family) | |
4056 | { | |
4057 | case AF_INET: | |
4058 | { | |
4059 | Lisp_Object args[5]; | |
4060 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4061 | args[0] = build_string ("%d.%d.%d.%d"); | |
4062 | args[1] = make_number (*ip++); | |
4063 | args[2] = make_number (*ip++); | |
4064 | args[3] = make_number (*ip++); | |
4065 | args[4] = make_number (*ip++); | |
4066 | host = Fformat (5, args); | |
4067 | service = make_number (ntohs (saddr.in.sin_port)); | |
4068 | ||
4069 | args[0] = build_string (" <%s:%d>"); | |
4070 | args[1] = host; | |
4071 | args[2] = service; | |
4072 | caller = Fformat (3, args); | |
4073 | } | |
4074 | break; | |
4075 | ||
e1652a86 KS |
4076 | #ifdef AF_INET6 |
4077 | case AF_INET6: | |
4078 | { | |
4079 | Lisp_Object args[9]; | |
4080 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4081 | int i; | |
4082 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4083 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4084 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4085 | host = Fformat (9, args); |
4086 | service = make_number (ntohs (saddr.in.sin_port)); | |
4087 | ||
4088 | args[0] = build_string (" <[%s]:%d>"); | |
4089 | args[1] = host; | |
4090 | args[2] = service; | |
4091 | caller = Fformat (3, args); | |
4092 | } | |
4093 | break; | |
4094 | #endif | |
4095 | ||
e690ca94 KS |
4096 | #ifdef HAVE_LOCAL_SOCKETS |
4097 | case AF_LOCAL: | |
4098 | #endif | |
4099 | default: | |
4100 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4101 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4102 | break; |
4103 | } | |
4104 | ||
4105 | /* Create a new buffer name for this process if it doesn't have a | |
4106 | filter. The new buffer name is based on the buffer name or | |
4107 | process name of the server process concatenated with the caller | |
4108 | identification. */ | |
4109 | ||
4110 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4111 | buffer = Qnil; | |
4112 | else | |
4113 | { | |
4114 | buffer = ps->buffer; | |
4115 | if (!NILP (buffer)) | |
4116 | buffer = Fbuffer_name (buffer); | |
4117 | else | |
4118 | buffer = ps->name; | |
4119 | if (!NILP (buffer)) | |
4120 | { | |
4121 | buffer = concat2 (buffer, caller); | |
4122 | buffer = Fget_buffer_create (buffer); | |
4123 | } | |
4124 | } | |
4125 | ||
4126 | /* Generate a unique name for the new server process. Combine the | |
4127 | server process name with the caller identification. */ | |
4128 | ||
4129 | name = concat2 (ps->name, caller); | |
4130 | proc = make_process (name); | |
4131 | ||
4132 | chan_process[s] = proc; | |
4133 | ||
4134 | #ifdef O_NONBLOCK | |
4135 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4136 | #else | |
4137 | #ifdef O_NDELAY | |
4138 | fcntl (s, F_SETFL, O_NDELAY); | |
4139 | #endif | |
4140 | #endif | |
4141 | ||
4142 | p = XPROCESS (proc); | |
4143 | ||
4144 | /* Build new contact information for this setup. */ | |
4145 | contact = Fcopy_sequence (ps->childp); | |
4146 | contact = Fplist_put (contact, QCserver, Qnil); | |
4147 | contact = Fplist_put (contact, QChost, host); | |
4148 | if (!NILP (service)) | |
4149 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4150 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4151 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4152 | #ifdef HAVE_GETSOCKNAME | |
4153 | len = sizeof saddr; | |
2185db04 | 4154 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4155 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4156 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4157 | #endif | |
4158 | ||
4159 | p->childp = contact; | |
faa7db08 | 4160 | p->plist = Fcopy_sequence (ps->plist); |
d888760c | 4161 | p->type = Qnetwork; |
ac4a7584 | 4162 | |
e690ca94 KS |
4163 | p->buffer = buffer; |
4164 | p->sentinel = ps->sentinel; | |
4165 | p->filter = ps->filter; | |
4166 | p->command = Qnil; | |
6bfd98e7 | 4167 | p->pid = 0; |
60f0fb11 SM |
4168 | p->infd = s; |
4169 | p->outfd = s; | |
e690ca94 KS |
4170 | p->status = Qrun; |
4171 | ||
4172 | /* Client processes for accepted connections are not stopped initially. */ | |
4173 | if (!EQ (p->filter, Qt)) | |
4174 | { | |
4175 | FD_SET (s, &input_wait_mask); | |
4176 | FD_SET (s, &non_keyboard_wait_mask); | |
4177 | } | |
4178 | ||
4179 | if (s > max_process_desc) | |
4180 | max_process_desc = s; | |
4181 | ||
177c0ea7 | 4182 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4183 | This seems to be the proper thing to do, as the coding system |
4184 | of the new process should reflect the settings at the time the | |
4185 | server socket was opened; not the current settings. */ | |
4186 | ||
4187 | p->decode_coding_system = ps->decode_coding_system; | |
4188 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4189 | setup_process_coding_systems (proc); |
e690ca94 | 4190 | |
cbe81f1d | 4191 | p->decoding_buf = empty_unibyte_string; |
60f0fb11 | 4192 | p->decoding_carryover = 0; |
cbe81f1d | 4193 | p->encoding_buf = empty_unibyte_string; |
e690ca94 KS |
4194 | |
4195 | p->inherit_coding_system_flag | |
60f0fb11 | 4196 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 KS |
4197 | |
4198 | if (!NILP (ps->log)) | |
4199 | call3 (ps->log, server, proc, | |
4200 | concat3 (build_string ("accept from "), | |
4201 | (STRINGP (host) ? host : build_string ("-")), | |
4202 | build_string ("\n"))); | |
4203 | ||
bed9664a | 4204 | if (!NILP (p->sentinel)) |
177c0ea7 | 4205 | exec_sentinel (proc, |
e690ca94 KS |
4206 | concat3 (build_string ("open from "), |
4207 | (STRINGP (host) ? host : build_string ("-")), | |
4208 | build_string ("\n"))); | |
4209 | } | |
4210 | ||
d0d6b7c5 JB |
4211 | /* This variable is different from waiting_for_input in keyboard.c. |
4212 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4213 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4214 | for user-input when that process-filter was called. |
4215 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4216 | lisp code is being evalled. |
4217 | This is also used in record_asynch_buffer_change. | |
4218 | For that purpose, this must be 0 | |
214d6069 | 4219 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4220 | static int waiting_for_user_input_p; |
4221 | ||
2beb96f9 | 4222 | static Lisp_Object |
d3da34e0 | 4223 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4224 | { |
4225 | waiting_for_user_input_p = XINT (data); | |
4226 | return Qnil; | |
4227 | } | |
4228 | ||
c573ae8e | 4229 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4230 | static void |
d3da34e0 | 4231 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4232 | { |
4233 | } | |
4234 | ||
e1e541bd | 4235 | /* Use a wrapper around select to work around a bug in gdb 5.3. |
96c834b6 | 4236 | Normally, the wrapper is optimized away by inlining. |
e1e541bd KS |
4237 | |
4238 | If emacs is stopped inside select, the gdb backtrace doesn't | |
4239 | show the function which called select, so it is practically | |
4240 | impossible to step through wait_reading_process_output. */ | |
4241 | ||
4242 | #ifndef select | |
55d4c1b2 | 4243 | static inline int |
d3da34e0 | 4244 | select_wrapper (int n, fd_set *rfd, fd_set *wfd, fd_set *xfd, struct timeval *tmo) |
e1e541bd KS |
4245 | { |
4246 | return select (n, rfd, wfd, xfd, tmo); | |
4247 | } | |
4248 | #define select select_wrapper | |
4249 | #endif | |
4250 | ||
d0d6b7c5 JB |
4251 | /* Read and dispose of subprocess output while waiting for timeout to |
4252 | elapse and/or keyboard input to be available. | |
4253 | ||
de6fd4b9 | 4254 | TIME_LIMIT is: |
d0d6b7c5 JB |
4255 | timeout in seconds, or |
4256 | zero for no limit, or | |
4257 | -1 means gobble data immediately available but don't wait for any. | |
4258 | ||
de6fd4b9 RS |
4259 | MICROSECS is: |
4260 | an additional duration to wait, measured in microseconds. | |
4261 | If this is nonzero and time_limit is 0, then the timeout | |
4262 | consists of MICROSECS only. | |
6e4f3667 | 4263 | |
de6fd4b9 | 4264 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4265 | 0 to ignore keyboard input, or |
4266 | 1 to return when input is available, or | |
84aa3ace | 4267 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4268 | the quit handler, or |
d0d6b7c5 | 4269 | |
de6fd4b9 | 4270 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4271 | output that arrives. |
d0d6b7c5 | 4272 | |
b89a415a KS |
4273 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4274 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4275 | |
b89a415a | 4276 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4277 | process. The return value is true if we read some input from |
b89a415a KS |
4278 | that process. |
4279 | ||
4280 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4281 | (suspending output from other processes). A negative value | |
4282 | means don't run any timers either. | |
4283 | ||
e0f24100 | 4284 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4285 | received input from that process before the timeout elapsed. |
e0f24100 | 4286 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4287 | |
dfcf069d | 4288 | int |
d5a3eaaf AS |
4289 | wait_reading_process_output (int time_limit, int microsecs, int read_kbd, |
4290 | int do_display, | |
4291 | Lisp_Object wait_for_cell, | |
4292 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4293 | { |
41d03b9a | 4294 | register int channel, nfds; |
855448dc | 4295 | SELECT_TYPE Available; |
3fad2ad2 J |
4296 | SELECT_TYPE Writeok; |
4297 | int check_write; | |
bad49fc7 | 4298 | int check_delay, no_avail; |
d0d6b7c5 JB |
4299 | int xerrno; |
4300 | Lisp_Object proc; | |
41d03b9a | 4301 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4302 | int wait_channel = -1; |
d0d6b7c5 | 4303 | int got_some_input = 0; |
2beb96f9 | 4304 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4305 | |
4306 | FD_ZERO (&Available); | |
3fad2ad2 | 4307 | FD_ZERO (&Writeok); |
d0d6b7c5 | 4308 | |
283357a7 | 4309 | if (time_limit == 0 && microsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
2b0a91e7 SM |
4310 | && !(CONSP (wait_proc->status) && EQ (XCAR (wait_proc->status), Qexit))) |
4311 | message ("Blocking call to accept-process-output with quit inhibited!!"); | |
4312 | ||
b89a415a KS |
4313 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4314 | if (wait_proc != NULL) | |
60f0fb11 | 4315 | wait_channel = wait_proc->infd; |
84aa3ace | 4316 | |
2beb96f9 KS |
4317 | record_unwind_protect (wait_reading_process_output_unwind, |
4318 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4319 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4320 | |
4321 | /* Since we may need to wait several times, | |
4322 | compute the absolute time to return at. */ | |
4323 | if (time_limit || microsecs) | |
4324 | { | |
4325 | EMACS_GET_TIME (end_time); | |
4326 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4327 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4328 | } | |
4329 | ||
d0d6b7c5 JB |
4330 | while (1) |
4331 | { | |
c0239a0b RS |
4332 | int timeout_reduced_for_timers = 0; |
4333 | ||
d0d6b7c5 JB |
4334 | /* If calling from keyboard input, do not quit |
4335 | since we want to return C-g as an input character. | |
4336 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4337 | if (read_kbd >= 0) |
d0d6b7c5 | 4338 | QUIT; |
6b61353c | 4339 | #ifdef SYNC_INPUT |
ef5eb925 | 4340 | else |
c3eff1b0 | 4341 | process_pending_signals (); |
6b61353c | 4342 | #endif |
d0d6b7c5 | 4343 | |
889255b4 | 4344 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4345 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4346 | break; |
4347 | ||
d0d6b7c5 JB |
4348 | /* Compute time from now till when time limit is up */ |
4349 | /* Exit if already run out */ | |
4350 | if (time_limit == -1) | |
4351 | { | |
4352 | /* -1 specified for timeout means | |
4353 | gobble output available now | |
4354 | but don't wait at all. */ | |
4355 | ||
4356 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4357 | } | |
4358 | else if (time_limit || microsecs) | |
4359 | { | |
4360 | EMACS_GET_TIME (timeout); | |
4361 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4362 | if (EMACS_TIME_NEG_P (timeout)) | |
4363 | break; | |
4364 | } | |
4365 | else | |
4366 | { | |
4367 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4368 | } | |
4369 | ||
f854a00b RS |
4370 | /* Normally we run timers here. |
4371 | But not if wait_for_cell; in those cases, | |
4372 | the wait is supposed to be short, | |
4373 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4374 | if (NILP (wait_for_cell) |
b89a415a | 4375 | && just_wait_proc >= 0) |
fb4c3627 | 4376 | { |
c0239a0b | 4377 | EMACS_TIME timer_delay; |
c573ae8e | 4378 | |
9baacf76 | 4379 | do |
c573ae8e | 4380 | { |
9baacf76 | 4381 | int old_timers_run = timers_run; |
c88164fe | 4382 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4383 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4384 | |
f868cd8a | 4385 | timer_delay = timer_check (); |
a2fab450 GM |
4386 | |
4387 | /* If a timer has run, this might have changed buffers | |
4388 | an alike. Make read_key_sequence aware of that. */ | |
4389 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4390 | && (old_buffer != current_buffer |
4391 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4392 | && waiting_for_user_input_p == -1) |
4393 | record_asynch_buffer_change (); | |
177c0ea7 | 4394 | |
9baacf76 GM |
4395 | if (timers_run != old_timers_run && do_display) |
4396 | /* We must retry, since a timer may have requeued itself | |
4397 | and that could alter the time_delay. */ | |
3007ebfb | 4398 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4399 | else |
4400 | break; | |
c573ae8e | 4401 | } |
9baacf76 | 4402 | while (!detect_input_pending ()); |
c573ae8e | 4403 | |
69645afc | 4404 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4405 | if (read_kbd != 0 |
69645afc RS |
4406 | && requeued_events_pending_p ()) |
4407 | break; | |
4408 | ||
c0239a0b | 4409 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4410 | { |
4411 | EMACS_TIME difference; | |
4412 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4413 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4414 | { |
4415 | timeout = timer_delay; | |
4416 | timeout_reduced_for_timers = 1; | |
4417 | } | |
fb4c3627 | 4418 | } |
4abca5e7 RS |
4419 | /* If time_limit is -1, we are not going to wait at all. */ |
4420 | else if (time_limit != -1) | |
c573ae8e RS |
4421 | { |
4422 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4423 | wait_reading_process_output_1 (); |
c573ae8e | 4424 | } |
fb4c3627 RS |
4425 | } |
4426 | ||
90ab1a81 JB |
4427 | /* Cause C-g and alarm signals to take immediate action, |
4428 | and cause input available signals to zero out timeout. | |
4429 | ||
4430 | It is important that we do this before checking for process | |
4431 | activity. If we get a SIGCHLD after the explicit checks for | |
4432 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4433 | if (read_kbd < 0) |
90ab1a81 JB |
4434 | set_waiting_for_input (&timeout); |
4435 | ||
6be429b1 JB |
4436 | /* If status of something has changed, and no input is |
4437 | available, notify the user of the change right away. After | |
4438 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4439 | timeout to get our attention. */ |
4440 | if (update_tick != process_tick) | |
6be429b1 | 4441 | { |
bad49fc7 | 4442 | SELECT_TYPE Atemp; |
bad49fc7 | 4443 | SELECT_TYPE Ctemp; |
dd2a17ab | 4444 | |
cb768704 J |
4445 | if (kbd_on_hold_p ()) |
4446 | FD_ZERO (&Atemp); | |
4447 | else | |
4448 | Atemp = input_wait_mask; | |
3fad2ad2 | 4449 | Ctemp = write_mask; |
bad49fc7 | 4450 | |
6be429b1 | 4451 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
3fad2ad2 | 4452 | if ((select (max (max_process_desc, max_input_desc) + 1, |
177c0ea7 | 4453 | &Atemp, |
bad49fc7 | 4454 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4455 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4456 | #else |
4457 | (SELECT_TYPE *)0, | |
4458 | #endif | |
dd2a17ab | 4459 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4460 | <= 0)) |
90ab1a81 JB |
4461 | { |
4462 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4463 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4464 | clear_waiting_for_input (); |
ff6daed3 | 4465 | status_notify (NULL); |
e42bdf01 | 4466 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4467 | } |
6be429b1 JB |
4468 | } |
4469 | ||
dd2a17ab | 4470 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4471 | read whatever data has already been received. */ |
6bfd98e7 | 4472 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4473 | update_status (wait_proc); |
6bfd98e7 | 4474 | if (wait_proc |
dd2a17ab KS |
4475 | && ! EQ (wait_proc->status, Qrun) |
4476 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4477 | { |
215b45e9 | 4478 | int nread, total_nread = 0; |
7ce63188 | 4479 | |
9aa2a7f4 | 4480 | clear_waiting_for_input (); |
7ce63188 RS |
4481 | XSETPROCESS (proc, wait_proc); |
4482 | ||
4483 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4484 | while (wait_proc->infd >= 0) |
215b45e9 | 4485 | { |
60f0fb11 | 4486 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4487 | |
4488 | if (nread == 0) | |
4489 | break; | |
4490 | ||
63136da6 AS |
4491 | if (0 < nread) |
4492 | { | |
891bd142 SM |
4493 | total_nread += nread; |
4494 | got_some_input = 1; | |
4495 | } | |
215b45e9 RS |
4496 | #ifdef EIO |
4497 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4498 | break; |
e1b37c34 GM |
4499 | #endif |
4500 | #ifdef EAGAIN | |
4501 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4502 | break; |
e1b37c34 GM |
4503 | #endif |
4504 | #ifdef EWOULDBLOCK | |
4505 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4506 | break; |
215b45e9 RS |
4507 | #endif |
4508 | } | |
7ce63188 | 4509 | if (total_nread > 0 && do_display) |
3007ebfb | 4510 | redisplay_preserve_echo_area (10); |
7ce63188 | 4511 | |
9aa2a7f4 JB |
4512 | break; |
4513 | } | |
6be429b1 | 4514 | |
d0d6b7c5 JB |
4515 | /* Wait till there is something to do */ |
4516 | ||
b89a415a | 4517 | if (wait_proc && just_wait_proc) |
107ed38d | 4518 | { |
60f0fb11 | 4519 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4520 | break; |
60f0fb11 | 4521 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 | 4522 | check_delay = 0; |
3fad2ad2 | 4523 | check_write = 0; |
107ed38d KS |
4524 | } |
4525 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4526 | { |
4527 | Available = non_process_wait_mask; | |
bad49fc7 | 4528 | check_delay = 0; |
3fad2ad2 | 4529 | check_write = 0; |
dd2a17ab | 4530 | } |
a69281ff | 4531 | else |
dd2a17ab | 4532 | { |
b89a415a | 4533 | if (! read_kbd) |
dd2a17ab KS |
4534 | Available = non_keyboard_wait_mask; |
4535 | else | |
4536 | Available = input_wait_mask; | |
3fad2ad2 | 4537 | Writeok = write_mask; |
82d6e50b J |
4538 | #ifdef SELECT_CANT_DO_WRITE_MASK |
4539 | check_write = 0; | |
4540 | #else | |
3fad2ad2 | 4541 | check_write = 1; |
82d6e50b | 4542 | #endif |
6b61353c | 4543 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4544 | } |
d0d6b7c5 | 4545 | |
ff11dfa1 | 4546 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4547 | redisplay now, before we start to wait. There is a race |
4548 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4549 | and indicates that a frame is trashed, the select may block |
4550 | displaying a trashed screen. */ | |
5164ee8e | 4551 | if (frame_garbaged && do_display) |
7286affd RS |
4552 | { |
4553 | clear_waiting_for_input (); | |
3007ebfb | 4554 | redisplay_preserve_echo_area (11); |
b89a415a | 4555 | if (read_kbd < 0) |
7efe788e | 4556 | set_waiting_for_input (&timeout); |
7286affd | 4557 | } |
ffd56f97 | 4558 | |
029529ac CY |
4559 | /* Skip the `select' call if input is available and we're |
4560 | waiting for keyboard input or a cell change (which can be | |
4561 | triggered by processing X events). In the latter case, set | |
4562 | nfds to 1 to avoid breaking the loop. */ | |
dd2a17ab | 4563 | no_avail = 0; |
029529ac CY |
4564 | if ((read_kbd || !NILP (wait_for_cell)) |
4565 | && detect_input_pending ()) | |
0a65b032 | 4566 | { |
029529ac | 4567 | nfds = read_kbd ? 0 : 1; |
dd2a17ab | 4568 | no_avail = 1; |
0a65b032 | 4569 | } |
029529ac CY |
4570 | |
4571 | if (!no_avail) | |
dd2a17ab | 4572 | { |
6b61353c KH |
4573 | |
4574 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4575 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4576 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4577 | read_output_delay, and we are not reading output for a |
4578 | specific wait_channel. It is not executed if | |
4579 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4580 | if (process_output_skip && check_delay > 0) |
4581 | { | |
4582 | int usecs = EMACS_USECS (timeout); | |
4583 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4584 | usecs = READ_OUTPUT_DELAY_MAX; | |
4585 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4586 | { | |
4587 | proc = chan_process[channel]; | |
4588 | if (NILP (proc)) | |
4589 | continue; | |
db853b7a | 4590 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4591 | processes with non-zero read_output_skip. */ |
4592 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4593 | { |
4594 | check_delay--; | |
60f0fb11 | 4595 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4596 | continue; |
4597 | FD_CLR (channel, &Available); | |
60f0fb11 SM |
4598 | XPROCESS (proc)->read_output_skip = 0; |
4599 | if (XPROCESS (proc)->read_output_delay < usecs) | |
4600 | usecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4601 | } |
4602 | } | |
4603 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4604 | process_output_skip = 0; | |
4605 | } | |
4606 | #endif | |
0949d2b6 | 4607 | #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS) |
872870b2 JD |
4608 | nfds = xg_select |
4609 | #elif defined (HAVE_NS) | |
63136da6 | 4610 | nfds = ns_select |
edfda783 | 4611 | #else |
63136da6 | 4612 | nfds = select |
edfda783 | 4613 | #endif |
3fad2ad2 J |
4614 | (max (max_process_desc, max_input_desc) + 1, |
4615 | &Available, | |
4616 | (check_write ? &Writeok : (SELECT_TYPE *)0), | |
4617 | (SELECT_TYPE *)0, &timeout); | |
e061a11b TZ |
4618 | |
4619 | #ifdef HAVE_GNUTLS | |
4620 | /* GnuTLS buffers data internally. In lowat mode it leaves | |
4621 | some data in the TCP buffers so that select works, but | |
4622 | with custom pull/push functions we need to check if some | |
4623 | data is available in the buffers manually. */ | |
261b6fd4 LMI |
4624 | if (nfds == 0) |
4625 | { | |
4626 | if (! wait_proc) | |
4627 | { | |
4628 | /* We're not waiting on a specific process, so loop | |
16c1ad08 LMI |
4629 | through all the channels and check for data. |
4630 | This is a workaround needed for some versions of | |
4631 | the gnutls library -- 2.12.14 has been confirmed | |
4632 | to need it. See | |
4633 | http://comments.gmane.org/gmane.emacs.devel/145074 */ | |
261b6fd4 | 4634 | for (channel = 0; channel < MAXDESC; ++channel) |
5b76caa4 PE |
4635 | if (! NILP (chan_process[channel])) |
4636 | { | |
4637 | struct Lisp_Process *p = | |
4638 | XPROCESS (chan_process[channel]); | |
4639 | if (p && p->gnutls_p && p->infd | |
4640 | && ((emacs_gnutls_record_check_pending | |
4641 | (p->gnutls_state)) | |
4642 | > 0)) | |
4643 | { | |
4644 | nfds++; | |
4645 | FD_SET (p->infd, &Available); | |
4646 | } | |
4647 | } | |
261b6fd4 LMI |
4648 | } |
4649 | else | |
4650 | { | |
4651 | /* Check this specific channel. */ | |
5b76caa4 | 4652 | if (wait_proc->gnutls_p /* Check for valid process. */ |
261b6fd4 | 4653 | /* Do we have pending data? */ |
5b76caa4 PE |
4654 | && ((emacs_gnutls_record_check_pending |
4655 | (wait_proc->gnutls_state)) | |
4656 | > 0)) | |
261b6fd4 LMI |
4657 | { |
4658 | nfds = 1; | |
4659 | /* Set to Available. */ | |
4660 | FD_SET (wait_proc->infd, &Available); | |
4661 | } | |
4662 | } | |
4663 | } | |
e061a11b | 4664 | #endif |
dd2a17ab | 4665 | } |
6720a7fb | 4666 | |
d0d6b7c5 JB |
4667 | xerrno = errno; |
4668 | ||
4669 | /* Make C-g and alarm signals set flags again */ | |
4670 | clear_waiting_for_input (); | |
4671 | ||
4672 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4673 | do_pending_window_change (0); |
d0d6b7c5 | 4674 | |
c0239a0b RS |
4675 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4676 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4677 | break; |
4678 | if (nfds < 0) | |
4679 | { | |
4680 | if (xerrno == EINTR) | |
dd2a17ab | 4681 | no_avail = 1; |
d0d6b7c5 JB |
4682 | else if (xerrno == EBADF) |
4683 | { | |
4684 | #ifdef AIX | |
4685 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4686 | the child's closure of the pts gives the parent a SIGHUP, and | |
4687 | the ptc file descriptor is automatically closed, | |
4688 | yielding EBADF here or at select() call above. | |
4689 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4690 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4691 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4692 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4693 | #else |
4694 | abort (); | |
4695 | #endif | |
4696 | } | |
4697 | else | |
68c45bf0 | 4698 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4699 | } |
dd2a17ab KS |
4700 | |
4701 | if (no_avail) | |
4702 | { | |
4703 | FD_ZERO (&Available); | |
3fad2ad2 | 4704 | check_write = 0; |
dd2a17ab KS |
4705 | } |
4706 | ||
5d5beb62 RS |
4707 | #if 0 /* When polling is used, interrupt_input is 0, |
4708 | so get_input_pending should read the input. | |
4709 | So this should not be needed. */ | |
4710 | /* If we are using polling for input, | |
4711 | and we see input available, make it get read now. | |
4712 | Otherwise it might not actually get read for a second. | |
214d6069 | 4713 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4714 | it might never get read at all if we don't spend much time |
214d6069 | 4715 | outside of wait_reading_process_output. */ |
b89a415a | 4716 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4717 | && keyboard_bit_set (&Available) |
4718 | && input_polling_used ()) | |
4719 | kill (getpid (), SIGALRM); | |
4720 | #endif | |
4721 | ||
d0d6b7c5 JB |
4722 | /* Check for keyboard input */ |
4723 | /* If there is any, return immediately | |
4724 | to give it higher priority than subprocesses */ | |
4725 | ||
b89a415a | 4726 | if (read_kbd != 0) |
6ed6233b | 4727 | { |
a2fab450 | 4728 | int old_timers_run = timers_run; |
c88164fe | 4729 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4730 | Lisp_Object old_window = selected_window; |
a2fab450 | 4731 | int leave = 0; |
177c0ea7 | 4732 | |
5d6c2aa3 | 4733 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4734 | { |
4735 | swallow_events (do_display); | |
4736 | if (detect_input_pending_run_timers (do_display)) | |
4737 | leave = 1; | |
4738 | } | |
6ed6233b | 4739 | |
a2fab450 GM |
4740 | /* If a timer has run, this might have changed buffers |
4741 | an alike. Make read_key_sequence aware of that. */ | |
4742 | if (timers_run != old_timers_run | |
c88164fe | 4743 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4744 | && (old_buffer != current_buffer |
4745 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4746 | record_asynch_buffer_change (); |
4747 | ||
4748 | if (leave) | |
4749 | break; | |
177c0ea7 JB |
4750 | } |
4751 | ||
69645afc | 4752 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4753 | if (read_kbd != 0 |
69645afc RS |
4754 | && requeued_events_pending_p ()) |
4755 | break; | |
4756 | ||
77e1b3d4 RS |
4757 | /* If we are not checking for keyboard input now, |
4758 | do process events (but don't run any timers). | |
4759 | This is so that X events will be processed. | |
0c9960e9 | 4760 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4761 | That would causes delays in pasting selections, for example. |
4762 | ||
4763 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4764 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4765 | { |
4766 | swallow_events (do_display); | |
0c9960e9 | 4767 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4768 | if (detect_input_pending ()) |
4769 | break; | |
5d5beb62 | 4770 | #endif |
0c9960e9 | 4771 | } |
f854a00b | 4772 | |
84aa3ace | 4773 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4774 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4775 | break; |
4776 | ||
4746118a | 4777 | #ifdef SIGIO |
5d5beb62 | 4778 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4779 | go read it. This can happen with X on BSD after logging out. |
4780 | In that case, there really is no input and no SIGIO, | |
4781 | but select says there is input. */ | |
4782 | ||
b89a415a | 4783 | if (read_kbd && interrupt_input |
2601f59e | 4784 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4785 | kill (getpid (), SIGIO); |
4746118a | 4786 | #endif |
d0d6b7c5 | 4787 | |
d0d6b7c5 JB |
4788 | if (! wait_proc) |
4789 | got_some_input |= nfds > 0; | |
4790 | ||
32676c08 JB |
4791 | /* If checking input just got us a size-change event from X, |
4792 | obey it now if we should. */ | |
b89a415a | 4793 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4794 | do_pending_window_change (0); |
32676c08 | 4795 | |
a9f2c884 | 4796 | /* Check for data from a process. */ |
dd2a17ab KS |
4797 | if (no_avail || nfds == 0) |
4798 | continue; | |
4799 | ||
3fad2ad2 J |
4800 | for (channel = 0; channel <= max_input_desc; ++channel) |
4801 | { | |
4802 | struct fd_callback_data *d = &fd_callback_info[channel]; | |
4803 | if (FD_ISSET (channel, &Available) | |
4804 | && d->func != 0 | |
4805 | && (d->condition & FOR_READ) != 0) | |
4806 | d->func (channel, d->data, 1); | |
4807 | if (FD_ISSET (channel, &write_mask) | |
4808 | && d->func != 0 | |
4809 | && (d->condition & FOR_WRITE) != 0) | |
4810 | d->func (channel, d->data, 0); | |
4811 | } | |
4812 | ||
a69281ff | 4813 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4814 | { |
a69281ff | 4815 | if (FD_ISSET (channel, &Available) |
3fad2ad2 J |
4816 | && FD_ISSET (channel, &non_keyboard_wait_mask) |
4817 | && !FD_ISSET (channel, &non_process_wait_mask)) | |
d0d6b7c5 JB |
4818 | { |
4819 | int nread; | |
4820 | ||
4821 | /* If waiting for this channel, arrange to return as | |
4822 | soon as no more input to be processed. No more | |
4823 | waiting. */ | |
4824 | if (wait_channel == channel) | |
4825 | { | |
a9f2c884 | 4826 | wait_channel = -1; |
d0d6b7c5 JB |
4827 | time_limit = -1; |
4828 | got_some_input = 1; | |
4829 | } | |
4830 | proc = chan_process[channel]; | |
4831 | if (NILP (proc)) | |
4832 | continue; | |
4833 | ||
e690ca94 KS |
4834 | /* If this is a server stream socket, accept connection. */ |
4835 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4836 | { | |
4837 | server_accept_connection (proc, channel); | |
4838 | continue; | |
4839 | } | |
4840 | ||
d0d6b7c5 JB |
4841 | /* Read data from the process, starting with our |
4842 | buffered-ahead character if we have one. */ | |
4843 | ||
4844 | nread = read_process_output (proc, channel); | |
4845 | if (nread > 0) | |
4846 | { | |
4847 | /* Since read_process_output can run a filter, | |
4848 | which can call accept-process-output, | |
4849 | don't try to read from any other processes | |
4850 | before doing the select again. */ | |
4851 | FD_ZERO (&Available); | |
4852 | ||
4853 | if (do_display) | |
3007ebfb | 4854 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4855 | } |
4856 | #ifdef EWOULDBLOCK | |
4857 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4858 | ; | |
0b75e9a4 | 4859 | #endif |
89d7280d RS |
4860 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4861 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4862 | #ifdef O_NONBLOCK |
4863 | else if (nread == -1 && errno == EAGAIN) | |
4864 | ; | |
4865 | #else | |
4866 | #ifdef O_NDELAY | |
4867 | else if (nread == -1 && errno == EAGAIN) | |
4868 | ; | |
4869 | /* Note that we cannot distinguish between no input | |
4870 | available now and a closed pipe. | |
4871 | With luck, a closed pipe will be accompanied by | |
4872 | subprocess termination and SIGCHLD. */ | |
d888760c | 4873 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4874 | ; |
4740825c KS |
4875 | #endif /* O_NDELAY */ |
4876 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4877 | #ifdef HAVE_PTYS |
4878 | /* On some OSs with ptys, when the process on one end of | |
4879 | a pty exits, the other end gets an error reading with | |
4880 | errno = EIO instead of getting an EOF (0 bytes read). | |
4881 | Therefore, if we get an error reading and errno = | |
4882 | EIO, just continue, because the child process has | |
4883 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4884 | get a SIGCHLD). |
4885 | ||
4886 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4887 | got lost. So raise the signal again just in case. |
5651af6d | 4888 | It can't hurt. */ |
d0d6b7c5 | 4889 | else if (nread == -1 && errno == EIO) |
4740825c | 4890 | { |
83ed7b5c GM |
4891 | /* Clear the descriptor now, so we only raise the signal once. */ |
4892 | FD_CLR (channel, &input_wait_mask); | |
4893 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4740825c | 4894 | |
83ed7b5c | 4895 | kill (getpid (), SIGCHLD); |
4740825c KS |
4896 | } |
4897 | #endif /* HAVE_PTYS */ | |
ffd56f97 JB |
4898 | /* If we can detect process termination, don't consider the process |
4899 | gone just because its pipe is closed. */ | |
d0d6b7c5 | 4900 | #ifdef SIGCHLD |
d888760c | 4901 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4902 | ; |
4903 | #endif | |
4904 | else | |
4905 | { | |
4906 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4907 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4908 | deactivate_process (proc); |
6bfd98e7 | 4909 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 JB |
4910 | update_status (XPROCESS (proc)); |
4911 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4912 | XPROCESS (proc)->status | |
4913 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4914 | } | |
4915 | } | |
177c0ea7 | 4916 | #ifdef NON_BLOCKING_CONNECT |
3fad2ad2 | 4917 | if (FD_ISSET (channel, &Writeok) |
1566f511 | 4918 | && FD_ISSET (channel, &connect_wait_mask)) |
dd2a17ab KS |
4919 | { |
4920 | struct Lisp_Process *p; | |
dd2a17ab KS |
4921 | |
4922 | FD_CLR (channel, &connect_wait_mask); | |
d8a4b27a | 4923 | FD_CLR (channel, &write_mask); |
dd2a17ab KS |
4924 | if (--num_pending_connects < 0) |
4925 | abort (); | |
4926 | ||
4927 | proc = chan_process[channel]; | |
4928 | if (NILP (proc)) | |
4929 | continue; | |
4930 | ||
4931 | p = XPROCESS (proc); | |
4932 | ||
4933 | #ifdef GNU_LINUX | |
4934 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 4935 | So only use it on systems where it is known to work. */ |
dd2a17ab | 4936 | { |
401bf9b4 | 4937 | socklen_t xlen = sizeof (xerrno); |
ed3751c8 | 4938 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
dd2a17ab KS |
4939 | xerrno = errno; |
4940 | } | |
4941 | #else | |
44c887be PJ |
4942 | { |
4943 | struct sockaddr pname; | |
ed3751c8 | 4944 | int pnamelen = sizeof (pname); |
44c887be PJ |
4945 | |
4946 | /* If connection failed, getpeername will fail. */ | |
4947 | xerrno = 0; | |
ed3751c8 | 4948 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
4949 | { |
4950 | /* Obtain connect failure code through error slippage. */ | |
4951 | char dummy; | |
dd2a17ab | 4952 | xerrno = errno; |
ed3751c8 | 4953 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
4954 | xerrno = errno; |
4955 | } | |
4956 | } | |
dd2a17ab KS |
4957 | #endif |
4958 | if (xerrno) | |
4959 | { | |
60f0fb11 | 4960 | p->tick = ++process_tick; |
dd2a17ab KS |
4961 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); |
4962 | deactivate_process (proc); | |
4963 | } | |
4964 | else | |
4965 | { | |
4966 | p->status = Qrun; | |
4967 | /* Execute the sentinel here. If we had relied on | |
4968 | status_notify to do it later, it will read input | |
4969 | from the process before calling the sentinel. */ | |
4970 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4971 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 4972 | { |
60f0fb11 SM |
4973 | FD_SET (p->infd, &input_wait_mask); |
4974 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
4975 | } |
4976 | } | |
4977 | } | |
4978 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4979 | } /* end for each file descriptor */ |
4980 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4981 | |
2beb96f9 | 4982 | unbind_to (count, Qnil); |
d430ee71 | 4983 | |
ffd56f97 JB |
4984 | /* If calling from keyboard input, do not quit |
4985 | since we want to return C-g as an input character. | |
4986 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4987 | if (read_kbd >= 0) |
ffd56f97 JB |
4988 | { |
4989 | /* Prevent input_pending from remaining set if we quit. */ | |
4990 | clear_input_pending (); | |
4991 | QUIT; | |
4992 | } | |
efa2a55c | 4993 | |
d0d6b7c5 JB |
4994 | return got_some_input; |
4995 | } | |
4996 | \f | |
3b9a3dfa RS |
4997 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4998 | ||
4999 | static Lisp_Object | |
d3da34e0 | 5000 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5001 | { |
70949dac | 5002 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5003 | } |
5004 | ||
5005 | static Lisp_Object | |
b93aacde | 5006 | read_process_output_error_handler (Lisp_Object error_val) |
3b9a3dfa | 5007 | { |
b93aacde | 5008 | cmd_error_internal (error_val, "error in process filter: "); |
3b9a3dfa RS |
5009 | Vinhibit_quit = Qt; |
5010 | update_echo_area (); | |
833ba342 | 5011 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5012 | return Qt; |
3b9a3dfa RS |
5013 | } |
5014 | ||
d0d6b7c5 JB |
5015 | /* Read pending output from the process channel, |
5016 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5017 | Yield number of decoded characters read. |
d0d6b7c5 | 5018 | |
116c423c | 5019 | This function reads at most 4096 characters. |
d0d6b7c5 | 5020 | If you want to read all available subprocess output, |
0fa1789e KH |
5021 | you must call it repeatedly until it returns zero. |
5022 | ||
5023 | The characters read are decoded according to PROC's coding-system | |
5024 | for decoding. */ | |
d0d6b7c5 | 5025 | |
ff6daed3 | 5026 | static int |
d3da34e0 | 5027 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5028 | { |
368f4090 | 5029 | register ssize_t nbytes; |
d0d6b7c5 | 5030 | char *chars; |
d0d6b7c5 | 5031 | register Lisp_Object outstream; |
d0d6b7c5 | 5032 | register struct Lisp_Process *p = XPROCESS (proc); |
f877c546 | 5033 | register EMACS_INT opoint; |
c7580538 | 5034 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5035 | int carryover = p->decoding_carryover; |
116c423c | 5036 | int readmax = 4096; |
3a4fa2f2 SM |
5037 | int count = SPECPDL_INDEX (); |
5038 | Lisp_Object odeactivate; | |
d0d6b7c5 | 5039 | |
e690ca94 | 5040 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
5041 | if (carryover) |
5042 | /* See the comment above. */ | |
72af86bd | 5043 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5044 | |
e690ca94 KS |
5045 | #ifdef DATAGRAM_SOCKETS |
5046 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5047 | if (DATAGRAM_CHAN_P (channel)) | |
5048 | { | |
401bf9b4 | 5049 | socklen_t len = datagram_address[channel].len; |
39b1da20 | 5050 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5051 | 0, datagram_address[channel].sa, &len); |
5052 | } | |
5053 | else | |
5054 | #endif | |
6b61353c | 5055 | { |
82eaa333 PE |
5056 | int buffered = 0 <= proc_buffered_char[channel]; |
5057 | if (buffered) | |
5058 | { | |
5059 | chars[carryover] = proc_buffered_char[channel]; | |
5060 | proc_buffered_char[channel] = -1; | |
5061 | } | |
8af55556 | 5062 | #ifdef HAVE_GNUTLS |
df7fcaff | 5063 | if (XPROCESS (proc)->gnutls_p) |
e968f4f3 | 5064 | nbytes = emacs_gnutls_read (XPROCESS (proc), |
82eaa333 PE |
5065 | chars + carryover + buffered, |
5066 | readmax - buffered); | |
8af55556 TZ |
5067 | else |
5068 | #endif | |
82eaa333 PE |
5069 | nbytes = emacs_read (channel, chars + carryover + buffered, |
5070 | readmax - buffered); | |
6b61353c | 5071 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5072 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5073 | { |
60f0fb11 | 5074 | int delay = p->read_output_delay; |
6b61353c KH |
5075 | if (nbytes < 256) |
5076 | { | |
5077 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5078 | { | |
5079 | if (delay == 0) | |
5080 | process_output_delay_count++; | |
5081 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5082 | } | |
5083 | } | |
82eaa333 | 5084 | else if (delay > 0 && nbytes == readmax - buffered) |
6b61353c KH |
5085 | { |
5086 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5087 | if (delay == 0) | |
5088 | process_output_delay_count--; | |
5089 | } | |
60f0fb11 | 5090 | p->read_output_delay = delay; |
6b61353c KH |
5091 | if (delay) |
5092 | { | |
60f0fb11 | 5093 | p->read_output_skip = 1; |
6b61353c KH |
5094 | process_output_skip = 1; |
5095 | } | |
5096 | } | |
5097 | #endif | |
fe07cdfa PE |
5098 | nbytes += buffered; |
5099 | nbytes += buffered && nbytes <= 0; | |
d0d6b7c5 | 5100 | } |
d0d6b7c5 | 5101 | |
60f0fb11 | 5102 | p->decoding_carryover = 0; |
ca65341e | 5103 | |
ed7a4b2d | 5104 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5105 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5106 | if (nbytes <= 0) |
5107 | { | |
5108 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5109 | return nbytes; | |
5110 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5111 | } | |
d0d6b7c5 | 5112 | |
1d2fc612 | 5113 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5114 | nbytes += carryover; |
0fa1789e | 5115 | |
3a4fa2f2 SM |
5116 | odeactivate = Vdeactivate_mark; |
5117 | /* There's no good reason to let process filters change the current | |
5118 | buffer, and many callers of accept-process-output, sit-for, and | |
5119 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 5120 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
3a4fa2f2 | 5121 | |
1d2fc612 | 5122 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
5123 | outstream = p->filter; |
5124 | if (!NILP (outstream)) | |
5125 | { | |
1d2fc612 | 5126 | Lisp_Object text; |
4da2f5be | 5127 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5128 | int waiting = waiting_for_user_input_p; |
30c78175 | 5129 | |
dfc21838 RS |
5130 | /* No need to gcpro these, because all we do with them later |
5131 | is test them for EQness, and none of them should be a string. */ | |
aba7731a PE |
5132 | #if 0 |
5133 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 5134 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 5135 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 5136 | #endif |
30c78175 | 5137 | |
3a4fa2f2 SM |
5138 | /* We inhibit quit here instead of just catching it so that |
5139 | hitting ^G when a filter happens to be running won't screw | |
5140 | it up. */ | |
d0d6b7c5 | 5141 | specbind (Qinhibit_quit, Qt); |
6545aada | 5142 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5143 | |
4da2f5be RS |
5144 | /* In case we get recursively called, |
5145 | and we already saved the match data nonrecursively, | |
5146 | save the same match data in safely recursive fashion. */ | |
5147 | if (outer_running_asynch_code) | |
5148 | { | |
5149 | Lisp_Object tem; | |
5150 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5151 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5152 | restore_search_regs (); | |
5153 | record_unwind_save_match_data (); | |
5154 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5155 | } |
5156 | ||
5157 | /* For speed, if a search happens within this code, | |
5158 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5159 | running_asynch_code = 1; |
4da2f5be | 5160 | |
400a67ff | 5161 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 | 5162 | text = coding->dst_object; |
5bbf78c1 | 5163 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5164 | /* A new coding system might be found. */ |
5bbf78c1 | 5165 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5166 | { |
5bbf78c1 | 5167 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d KH |
5168 | |
5169 | /* Don't call setup_coding_system for | |
5170 | proc_decode_coding_system[channel] here. It is done in | |
5171 | detect_coding called via decode_coding above. */ | |
5172 | ||
5173 | /* If a coding system for encoding is not yet decided, we set | |
5174 | it as the same as coding-system for decoding. | |
5175 | ||
5176 | But, before doing that we must check if | |
5177 | proc_encode_coding_system[p->outfd] surely points to a | |
5178 | valid memory because p->outfd will be changed once EOF is | |
5179 | sent to the process. */ | |
5180 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5181 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5182 | { |
76d812bb KH |
5183 | p->encode_coding_system |
5184 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5185 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5186 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5187 | } |
5188 | } | |
51c6067d | 5189 | |
dd8c7a53 KH |
5190 | if (coding->carryover_bytes > 0) |
5191 | { | |
04961398 KH |
5192 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5193 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5194 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5195 | coding->carryover_bytes); | |
8c406a9b | 5196 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5197 | } |
e430e5ba | 5198 | if (SBYTES (text) > 0) |
963b492b SM |
5199 | /* FIXME: It's wrong to wrap or not based on debug-on-error, and |
5200 | sometimes it's simply wrong to wrap (e.g. when called from | |
5201 | accept-process-output). */ | |
dd97db06 KH |
5202 | internal_condition_case_1 (read_process_output_call, |
5203 | Fcons (outstream, | |
5204 | Fcons (proc, Fcons (text, Qnil))), | |
5205 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5206 | read_process_output_error_handler); | |
4da2f5be RS |
5207 | |
5208 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5209 | restore_search_regs (); |
4da2f5be | 5210 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5211 | |
bbce7d72 RS |
5212 | /* Restore waiting_for_user_input_p as it was |
5213 | when we were called, in case the filter clobbered it. */ | |
5214 | waiting_for_user_input_p = waiting; | |
5215 | ||
7973cfa8 RS |
5216 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5217 | because we might have changed minor modes or other things | |
5218 | that affect key bindings. */ | |
dfc21838 RS |
5219 | if (! EQ (Fcurrent_buffer (), obuffer) |
5220 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5221 | #endif |
927e08be RS |
5222 | /* But do it only if the caller is actually going to read events. |
5223 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5224 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5225 | if (waiting_for_user_input_p == -1) |
5226 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5227 | } |
5228 | ||
5229 | /* If no filter, write into buffer if it isn't dead. */ | |
4b4deea2 | 5230 | else if (!NILP (p->buffer) && !NILP (BVAR (XBUFFER (p->buffer), name))) |
d0d6b7c5 | 5231 | { |
b0310da4 | 5232 | Lisp_Object old_read_only; |
f877c546 EZ |
5233 | EMACS_INT old_begv, old_zv; |
5234 | EMACS_INT old_begv_byte, old_zv_byte; | |
5235 | EMACS_INT before, before_byte; | |
5236 | EMACS_INT opoint_byte; | |
ed7a4b2d | 5237 | Lisp_Object text; |
926b7e5e | 5238 | struct buffer *b; |
30c78175 | 5239 | |
d0d6b7c5 | 5240 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5241 | opoint = PT; |
d8a2934e | 5242 | opoint_byte = PT_BYTE; |
4b4deea2 | 5243 | old_read_only = BVAR (current_buffer, read_only); |
12ca5cdf RS |
5244 | old_begv = BEGV; |
5245 | old_zv = ZV; | |
d8a2934e RS |
5246 | old_begv_byte = BEGV_BYTE; |
5247 | old_zv_byte = ZV_BYTE; | |
b0310da4 | 5248 | |
4b4deea2 | 5249 | BVAR (current_buffer, read_only) = Qnil; |
d0d6b7c5 JB |
5250 | |
5251 | /* Insert new output into buffer | |
5252 | at the current end-of-output marker, | |
5253 | thus preserving logical ordering of input and output. */ | |
5254 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5255 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5256 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5257 | ZV_BYTE)); | |
d0d6b7c5 | 5258 | else |
d8a2934e | 5259 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5260 | before = PT; |
d8a2934e | 5261 | before_byte = PT_BYTE; |
b0310da4 JB |
5262 | |
5263 | /* If the output marker is outside of the visible region, save | |
5264 | the restriction and widen. */ | |
6ec8bbd2 | 5265 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5266 | Fwiden (); |
5267 | ||
400a67ff | 5268 | decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt); |
5bbf78c1 KH |
5269 | text = coding->dst_object; |
5270 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5271 | /* A new coding system might be found. See the comment in the |
5272 | similar code in the previous `if' block. */ | |
5bbf78c1 | 5273 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5274 | { |
5bbf78c1 | 5275 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d | 5276 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5277 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5278 | { |
76d812bb KH |
5279 | p->encode_coding_system |
5280 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5281 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5282 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5283 | } |
5284 | } | |
dd8c7a53 KH |
5285 | if (coding->carryover_bytes > 0) |
5286 | { | |
04961398 KH |
5287 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5288 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5289 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5290 | coding->carryover_bytes); | |
8c406a9b | 5291 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5292 | } |
d69864bf | 5293 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
4b4deea2 | 5294 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
d69864bf KH |
5295 | != ! STRING_MULTIBYTE (text)) |
5296 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5297 | ? Fstring_as_unibyte (text) |
03f04413 | 5298 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5299 | /* Insert before markers in case we are inserting where |
5300 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5301 | insert_from_string_before_markers (text, 0, 0, |
5302 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5303 | |
926b7e5e GM |
5304 | /* Make sure the process marker's position is valid when the |
5305 | process buffer is changed in the signal_after_change above. | |
5306 | W3 is known to do that. */ | |
5307 | if (BUFFERP (p->buffer) | |
5308 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5309 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5310 | else | |
5311 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5312 | |
d0d6b7c5 JB |
5313 | update_mode_lines++; |
5314 | ||
12ca5cdf RS |
5315 | /* Make sure opoint and the old restrictions |
5316 | float ahead of any new text just as point would. */ | |
5317 | if (opoint >= before) | |
d8a2934e RS |
5318 | { |
5319 | opoint += PT - before; | |
5320 | opoint_byte += PT_BYTE - before_byte; | |
5321 | } | |
12ca5cdf | 5322 | if (old_begv > before) |
d8a2934e RS |
5323 | { |
5324 | old_begv += PT - before; | |
5325 | old_begv_byte += PT_BYTE - before_byte; | |
5326 | } | |
12ca5cdf | 5327 | if (old_zv >= before) |
d8a2934e RS |
5328 | { |
5329 | old_zv += PT - before; | |
5330 | old_zv_byte += PT_BYTE - before_byte; | |
5331 | } | |
12ca5cdf | 5332 | |
b0310da4 | 5333 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5334 | if (old_begv != BEGV || old_zv != ZV) |
5335 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5336 | |
30c78175 | 5337 | |
4b4deea2 | 5338 | BVAR (current_buffer, read_only) = old_read_only; |
d8a2934e | 5339 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5340 | } |
3a4fa2f2 SM |
5341 | /* Handling the process output should not deactivate the mark. */ |
5342 | Vdeactivate_mark = odeactivate; | |
5343 | ||
5344 | unbind_to (count, Qnil); | |
1d2fc612 | 5345 | return nbytes; |
d0d6b7c5 | 5346 | } |
d0d6b7c5 JB |
5347 | \f |
5348 | /* Sending data to subprocess */ | |
5349 | ||
40ccffa6 PE |
5350 | static jmp_buf send_process_frame; |
5351 | static Lisp_Object process_sent_to; | |
d0d6b7c5 | 5352 | |
006c5daa PE |
5353 | #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD |
5354 | static void send_process_trap (int) NO_RETURN; | |
5355 | #endif | |
5356 | ||
9af30bdf | 5357 | static void |
d3da34e0 | 5358 | send_process_trap (int ignore) |
d0d6b7c5 | 5359 | { |
333f1b6f | 5360 | SIGNAL_THREAD_CHECK (SIGPIPE); |
c8f44005 | 5361 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5362 | longjmp (send_process_frame, 1); |
5363 | } | |
5364 | ||
4556b700 RS |
5365 | /* Send some data to process PROC. |
5366 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5367 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5368 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5369 | |
a92e4183 KH |
5370 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5371 | for encoding before it is sent. | |
1fb0098c GM |
5372 | |
5373 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5374 | |
ff6daed3 | 5375 | static void |
400a67ff | 5376 | send_process (volatile Lisp_Object proc, const char *volatile buf, |
f877c546 | 5377 | volatile EMACS_INT len, volatile Lisp_Object object) |
d0d6b7c5 | 5378 | { |
ecd1f654 | 5379 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5380 | struct Lisp_Process *p = XPROCESS (proc); |
368f4090 | 5381 | ssize_t rv; |
0fa1789e | 5382 | struct coding_system *coding; |
347f3cd3 | 5383 | struct gcpro gcpro1; |
9af30bdf | 5384 | void (*volatile old_sigpipe) (int); |
6044e593 | 5385 | |
347f3cd3 | 5386 | GCPRO1 (object); |
d0d6b7c5 | 5387 | |
6bfd98e7 | 5388 | if (p->raw_status_new) |
6b61353c KH |
5389 | update_status (p); |
5390 | if (! EQ (p->status, Qrun)) | |
5391 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5392 | if (p->outfd < 0) |
6b61353c | 5393 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5394 | |
60f0fb11 | 5395 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5396 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5397 | |
ed7a4b2d KH |
5398 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5399 | || (BUFFERP (object) | |
4b4deea2 | 5400 | && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters))) |
a92e4183 | 5401 | || EQ (object, Qt)) |
278bfdd6 | 5402 | { |
fcaf8878 KH |
5403 | p->encode_coding_system |
5404 | = complement_process_encoding_system (p->encode_coding_system); | |
6b61353c | 5405 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
fcaf8878 KH |
5406 | { |
5407 | /* The coding system for encoding was changed to raw-text | |
5408 | because we sent a unibyte text previously. Now we are | |
5409 | sending a multibyte text, thus we must encode it by the | |
5410 | original coding system specified for the current process. | |
5411 | ||
da6062e6 PE |
5412 | Another reason we come here is that the coding system |
5413 | was just complemented and a new one was returned by | |
fcaf8878 KH |
5414 | complement_process_encoding_system. */ |
5415 | setup_coding_system (p->encode_coding_system, coding); | |
5416 | Vlast_coding_system_used = p->encode_coding_system; | |
5417 | } | |
e08bbb84 | 5418 | coding->src_multibyte = 1; |
278bfdd6 KH |
5419 | } |
5420 | else | |
5421 | { | |
a0241d01 | 5422 | coding->src_multibyte = 0; |
a92e4183 KH |
5423 | /* For sending a unibyte text, character code conversion should |
5424 | not take place but EOL conversion should. So, setup raw-text | |
5425 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5426 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5427 | { |
5428 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5429 | { | |
5430 | /* But, before changing the coding, we must flush out data. */ | |
5431 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5432 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5433 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5434 | } |
5bbf78c1 KH |
5435 | setup_coding_system (raw_text_coding_system |
5436 | (Vlast_coding_system_used), | |
5437 | coding); | |
e08bbb84 | 5438 | coding->src_multibyte = 0; |
a92e4183 | 5439 | } |
278bfdd6 | 5440 | } |
a4a37e65 KH |
5441 | coding->dst_multibyte = 0; |
5442 | ||
ed7a4b2d | 5443 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5444 | { |
5bbf78c1 | 5445 | coding->dst_object = Qt; |
ed7a4b2d | 5446 | if (BUFFERP (object)) |
0fa1789e | 5447 | { |
f877c546 EZ |
5448 | EMACS_INT from_byte, from, to; |
5449 | EMACS_INT save_pt, save_pt_byte; | |
5bbf78c1 KH |
5450 | struct buffer *cur = current_buffer; |
5451 | ||
5452 | set_buffer_internal (XBUFFER (object)); | |
5453 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5454 | ||
400a67ff | 5455 | from_byte = PTR_BYTE_POS ((unsigned char *) buf); |
5bbf78c1 KH |
5456 | from = BYTE_TO_CHAR (from_byte); |
5457 | to = BYTE_TO_CHAR (from_byte + len); | |
5458 | TEMP_SET_PT_BOTH (from, from_byte); | |
5459 | encode_coding_object (coding, object, from, from_byte, | |
5460 | to, from_byte + len, Qt); | |
5461 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5462 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5463 | } |
5464 | else if (STRINGP (object)) | |
5465 | { | |
550c8289 KH |
5466 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5467 | SBYTES (object), Qt); | |
0fa1789e | 5468 | } |
5bbf78c1 | 5469 | else |
452294c2 | 5470 | { |
5bbf78c1 KH |
5471 | coding->dst_object = make_unibyte_string (buf, len); |
5472 | coding->produced = len; | |
452294c2 | 5473 | } |
ed7a4b2d | 5474 | |
e7fbaa65 | 5475 | len = coding->produced; |
347f3cd3 | 5476 | object = coding->dst_object; |
400a67ff | 5477 | buf = SSDATA (object); |
0fa1789e | 5478 | } |
d0d6b7c5 | 5479 | |
4556b700 RS |
5480 | if (pty_max_bytes == 0) |
5481 | { | |
5482 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5483 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5484 | if (pty_max_bytes < 0) |
5485 | pty_max_bytes = 250; | |
5486 | #else | |
5487 | pty_max_bytes = 250; | |
5488 | #endif | |
5489 | /* Deduct one, to leave space for the eof. */ | |
5490 | pty_max_bytes--; | |
5491 | } | |
5492 | ||
0daad115 GM |
5493 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5494 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5495 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5496 | if (!setjmp (send_process_frame)) |
0daad115 | 5497 | { |
006c5daa PE |
5498 | p = XPROCESS (proc); /* Repair any setjmp clobbering. */ |
5499 | ||
0daad115 GM |
5500 | process_sent_to = proc; |
5501 | while (len > 0) | |
5502 | { | |
f877c546 | 5503 | EMACS_INT this = len; |
93b4f699 | 5504 | |
0daad115 GM |
5505 | /* Send this batch, using one or more write calls. */ |
5506 | while (this > 0) | |
5507 | { | |
85de1881 | 5508 | EMACS_INT written = 0; |
60f0fb11 | 5509 | int outfd = p->outfd; |
9af30bdf | 5510 | old_sigpipe = (void (*) (int)) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5511 | #ifdef DATAGRAM_SOCKETS |
5512 | if (DATAGRAM_CHAN_P (outfd)) | |
5513 | { | |
400a67ff | 5514 | rv = sendto (outfd, buf, this, |
e690ca94 KS |
5515 | 0, datagram_address[outfd].sa, |
5516 | datagram_address[outfd].len); | |
273a5f82 PE |
5517 | if (0 <= rv) |
5518 | written = rv; | |
5519 | else if (errno == EMSGSIZE) | |
c8f44005 RS |
5520 | { |
5521 | signal (SIGPIPE, old_sigpipe); | |
5522 | report_file_error ("sending datagram", | |
5523 | Fcons (proc, Qnil)); | |
5524 | } | |
e690ca94 KS |
5525 | } |
5526 | else | |
5527 | #endif | |
6b61353c | 5528 | { |
8af55556 | 5529 | #ifdef HAVE_GNUTLS |
df7fcaff | 5530 | if (XPROCESS (proc)->gnutls_p) |
e968f4f3 JB |
5531 | written = emacs_gnutls_write (XPROCESS (proc), |
5532 | buf, this); | |
8af55556 TZ |
5533 | else |
5534 | #endif | |
273a5f82 | 5535 | written = emacs_write (outfd, buf, this); |
086e8c47 | 5536 | rv = (written ? 0 : -1); |
6b61353c | 5537 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
5538 | if (p->read_output_delay > 0 |
5539 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5540 | { |
60f0fb11 | 5541 | p->read_output_delay = 0; |
6b61353c | 5542 | process_output_delay_count--; |
60f0fb11 | 5543 | p->read_output_skip = 0; |
6b61353c KH |
5544 | } |
5545 | #endif | |
5546 | } | |
0daad115 | 5547 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5548 | |
0daad115 GM |
5549 | if (rv < 0) |
5550 | { | |
5551 | if (0 | |
d0d6b7c5 | 5552 | #ifdef EWOULDBLOCK |
0daad115 | 5553 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5554 | #endif |
5555 | #ifdef EAGAIN | |
0daad115 | 5556 | || errno == EAGAIN |
d0d6b7c5 | 5557 | #endif |
0daad115 | 5558 | ) |
177c0ea7 | 5559 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5560 | that may allow the program |
5561 | to finish doing output and read more. */ | |
5562 | { | |
3d6c2543 | 5563 | EMACS_INT offset = 0; |
4556b700 | 5564 | |
3433b6bd | 5565 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5566 | /* A gross hack to work around a bug in FreeBSD. |
5567 | In the following sequence, read(2) returns | |
5568 | bogus data: | |
5569 | ||
5570 | write(2) 1022 bytes | |
5571 | write(2) 954 bytes, get EAGAIN | |
5572 | read(2) 1024 bytes in process_read_output | |
5573 | read(2) 11 bytes in process_read_output | |
5574 | ||
5575 | That is, read(2) returns more bytes than have | |
5576 | ever been written successfully. The 1033 bytes | |
5577 | read are the 1022 bytes written successfully | |
5578 | after processing (for example with CRs added if | |
5579 | the terminal is set up that way which it is | |
5580 | here). The same bytes will be seen again in a | |
5581 | later read(2), without the CRs. */ | |
177c0ea7 | 5582 | |
0daad115 GM |
5583 | if (errno == EAGAIN) |
5584 | { | |
5585 | int flags = FWRITE; | |
60f0fb11 | 5586 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5587 | } |
3433b6bd | 5588 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5589 | |
0daad115 GM |
5590 | /* Running filters might relocate buffers or strings. |
5591 | Arrange to relocate BUF. */ | |
347f3cd3 | 5592 | if (BUFFERP (object)) |
400a67ff PE |
5593 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), |
5594 | (unsigned char *) buf); | |
0daad115 | 5595 | else if (STRINGP (object)) |
400a67ff | 5596 | offset = buf - SSDATA (object); |
0daad115 | 5597 | |
f3e6605c | 5598 | #ifdef EMACS_HAS_USECS |
214d6069 | 5599 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5600 | #else |
214d6069 | 5601 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5602 | #endif |
4556b700 | 5603 | |
347f3cd3 | 5604 | if (BUFFERP (object)) |
400a67ff PE |
5605 | buf = (char *) BUF_BYTE_ADDRESS (XBUFFER (object), |
5606 | offset); | |
0daad115 | 5607 | else if (STRINGP (object)) |
400a67ff | 5608 | buf = offset + SSDATA (object); |
0daad115 GM |
5609 | } |
5610 | else | |
5611 | /* This is a real error. */ | |
5612 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5613 | } | |
273a5f82 PE |
5614 | buf += written; |
5615 | len -= written; | |
5616 | this -= written; | |
0daad115 | 5617 | } |
0daad115 GM |
5618 | } |
5619 | } | |
d0d6b7c5 JB |
5620 | else |
5621 | { | |
0ff69270 | 5622 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5623 | proc = process_sent_to; |
6b61353c | 5624 | p = XPROCESS (proc); |
6bfd98e7 | 5625 | p->raw_status_new = 0; |
6b61353c | 5626 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); |
60f0fb11 | 5627 | p->tick = ++process_tick; |
d0d6b7c5 | 5628 | deactivate_process (proc); |
6b61353c | 5629 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5630 | } |
6044e593 RS |
5631 | |
5632 | UNGCPRO; | |
d0d6b7c5 JB |
5633 | } |
5634 | ||
5635 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5636 | 3, 3, 0, |
5637 | doc: /* Send current contents of region as input to PROCESS. | |
5638 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5639 | nil, indicating the current buffer's process. | |
5640 | Called from program, takes three arguments, PROCESS, START and END. | |
5641 | If the region is more than 500 characters long, | |
5642 | it is sent in several bunches. This may happen even for shorter regions. | |
5643 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5644 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5645 | { |
5646 | Lisp_Object proc; | |
f877c546 | 5647 | EMACS_INT start1, end1; |
d0d6b7c5 JB |
5648 | |
5649 | proc = get_process (process); | |
5650 | validate_region (&start, &end); | |
1b234f64 KH |
5651 | |
5652 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5653 | move_gap (XINT (start)); | |
5654 | ||
5655 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5656 | end1 = CHAR_TO_BYTE (XINT (end)); | |
400a67ff | 5657 | send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1, |
1b234f64 KH |
5658 | Fcurrent_buffer ()); |
5659 | ||
d0d6b7c5 JB |
5660 | return Qnil; |
5661 | } | |
5662 | ||
5663 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5664 | 2, 2, 0, |
5665 | doc: /* Send PROCESS the contents of STRING as input. | |
5666 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5667 | nil, indicating the current buffer's process. | |
5668 | If STRING is more than 500 characters long, | |
5669 | it is sent in several bunches. This may happen even for shorter strings. | |
5670 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5671 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5672 | { |
5673 | Lisp_Object proc; | |
b7826503 | 5674 | CHECK_STRING (string); |
d0d6b7c5 | 5675 | proc = get_process (process); |
400a67ff | 5676 | send_process (proc, SSDATA (string), |
1b234f64 | 5677 | SBYTES (string), string); |
d0d6b7c5 JB |
5678 | return Qnil; |
5679 | } | |
5680 | \f | |
16782258 JD |
5681 | /* Return the foreground process group for the tty/pty that |
5682 | the process P uses. */ | |
5683 | static int | |
d3da34e0 | 5684 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 JD |
5685 | { |
5686 | int gid = -1; | |
5687 | ||
f3d9532b | 5688 | #ifdef TIOCGPGRP |
60f0fb11 | 5689 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5690 | { |
5691 | int fd; | |
5692 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5693 | master side. Try the slave side. */ | |
42a5b22f | 5694 | fd = emacs_open (SSDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5695 | |
5696 | if (fd != -1) | |
5697 | { | |
5698 | ioctl (fd, TIOCGPGRP, &gid); | |
5699 | emacs_close (fd); | |
5700 | } | |
5701 | } | |
5702 | #endif /* defined (TIOCGPGRP ) */ | |
5703 | ||
5704 | return gid; | |
5705 | } | |
5706 | ||
b81ea5ef RS |
5707 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5708 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5709 | doc: /* Return t if PROCESS has given the terminal to a child. |
5710 | If the operating system does not make it possible to find out, | |
5711 | return t unconditionally. */) | |
5842a27b | 5712 | (Lisp_Object process) |
b81ea5ef RS |
5713 | { |
5714 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5715 | in a way that will cause returning t. */ | |
16782258 | 5716 | int gid; |
b81ea5ef RS |
5717 | Lisp_Object proc; |
5718 | struct Lisp_Process *p; | |
5719 | ||
5720 | proc = get_process (process); | |
5721 | p = XPROCESS (proc); | |
5722 | ||
d888760c | 5723 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5724 | error ("Process %s is not a subprocess", |
d5db4077 | 5725 | SDATA (p->name)); |
60f0fb11 | 5726 | if (p->infd < 0) |
b81ea5ef | 5727 | error ("Process %s is not active", |
d5db4077 | 5728 | SDATA (p->name)); |
b81ea5ef | 5729 | |
16782258 | 5730 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5731 | |
6bfd98e7 | 5732 | if (gid == p->pid) |
b81ea5ef RS |
5733 | return Qnil; |
5734 | return Qt; | |
5735 | } | |
5736 | \f | |
d0d6b7c5 | 5737 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5738 | If CURRENT_GROUP is t, that means send to the process group |
5739 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5740 | This is used for various commands in shell mode. |
b81ea5ef RS |
5741 | If CURRENT_GROUP is lambda, that means send to the process group |
5742 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5743 | ||
d0d6b7c5 | 5744 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5745 | right away. |
5746 | ||
5747 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5748 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5749 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5750 | |
f9738840 | 5751 | static void |
d3da34e0 JB |
5752 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5753 | int nomsg) | |
d0d6b7c5 JB |
5754 | { |
5755 | Lisp_Object proc; | |
5756 | register struct Lisp_Process *p; | |
5757 | int gid; | |
5758 | int no_pgrp = 0; | |
5759 | ||
5760 | proc = get_process (process); | |
5761 | p = XPROCESS (proc); | |
5762 | ||
d888760c | 5763 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5764 | error ("Process %s is not a subprocess", |
d5db4077 | 5765 | SDATA (p->name)); |
60f0fb11 | 5766 | if (p->infd < 0) |
d0d6b7c5 | 5767 | error ("Process %s is not active", |
d5db4077 | 5768 | SDATA (p->name)); |
d0d6b7c5 | 5769 | |
60f0fb11 | 5770 | if (!p->pty_flag) |
d0d6b7c5 JB |
5771 | current_group = Qnil; |
5772 | ||
d0d6b7c5 | 5773 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5774 | if (NILP (current_group)) |
5775 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5776 | gid = p->pid; |
2af70a0c | 5777 | else |
d0d6b7c5 | 5778 | { |
b0310da4 | 5779 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5780 | /* If possible, send signals to the entire pgrp |
5781 | by sending an input character to it. */ | |
b0310da4 | 5782 | |
6be429b1 | 5783 | struct termios t; |
7f916a36 RS |
5784 | cc_t *sig_char = NULL; |
5785 | ||
60f0fb11 | 5786 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5787 | |
5788 | switch (signo) | |
5789 | { | |
5790 | case SIGINT: | |
7f916a36 RS |
5791 | sig_char = &t.c_cc[VINTR]; |
5792 | break; | |
6be429b1 JB |
5793 | |
5794 | case SIGQUIT: | |
7f916a36 RS |
5795 | sig_char = &t.c_cc[VQUIT]; |
5796 | break; | |
6be429b1 JB |
5797 | |
5798 | case SIGTSTP: | |
d0adf46f | 5799 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5800 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5801 | #else |
7f916a36 | 5802 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5803 | #endif |
7f916a36 | 5804 | break; |
6be429b1 JB |
5805 | } |
5806 | ||
ca4313d5 | 5807 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc | 5808 | { |
f990b4e5 | 5809 | send_process (proc, (char *) sig_char, 1, Qnil); |
f1c206fc RS |
5810 | return; |
5811 | } | |
5812 | /* If we can't send the signal with a character, | |
5813 | fall through and send it another way. */ | |
f1c206fc RS |
5814 | |
5815 | /* The code above may fall through if it can't | |
5816 | handle the signal. */ | |
20505336 | 5817 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5818 | |
177c0ea7 | 5819 | #ifdef TIOCGPGRP |
2af70a0c | 5820 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5821 | Otherwise, use the pty to get the pgrp. |
5822 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5823 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5824 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5825 | His patch indicates that if TIOCGPGRP returns an error, then |
5826 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5827 | |
16782258 | 5828 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5829 | |
16782258 JD |
5830 | if (gid == -1) |
5831 | /* If we can't get the information, assume | |
5832 | the shell owns the tty. */ | |
6bfd98e7 | 5833 | gid = p->pid; |
2af70a0c RS |
5834 | |
5835 | /* It is not clear whether anything really can set GID to -1. | |
5836 | Perhaps on some system one of those ioctls can or could do so. | |
5837 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5838 | if (gid == -1) |
5839 | no_pgrp = 1; | |
b0310da4 | 5840 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5841 | /* Can't select pgrps on this system, so we know that |
5842 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5843 | gid = p->pid; |
301c3fe4 | 5844 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5845 | |
5846 | /* If current_group is lambda, and the shell owns the terminal, | |
5847 | don't send any signal. */ | |
6bfd98e7 | 5848 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5849 | return; |
d0d6b7c5 | 5850 | } |
d0d6b7c5 JB |
5851 | |
5852 | switch (signo) | |
5853 | { | |
5854 | #ifdef SIGCONT | |
5855 | case SIGCONT: | |
6bfd98e7 | 5856 | p->raw_status_new = 0; |
d0d6b7c5 | 5857 | p->status = Qrun; |
60f0fb11 | 5858 | p->tick = ++process_tick; |
d0d6b7c5 | 5859 | if (!nomsg) |
e42bdf01 CY |
5860 | { |
5861 | status_notify (NULL); | |
5862 | redisplay_preserve_echo_area (13); | |
5863 | } | |
d0d6b7c5 | 5864 | break; |
301c3fe4 | 5865 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 5866 | case SIGINT: |
d0d6b7c5 | 5867 | case SIGQUIT: |
d0d6b7c5 | 5868 | case SIGKILL: |
60f0fb11 | 5869 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5870 | break; |
5871 | } | |
5872 | ||
5873 | /* If we don't have process groups, send the signal to the immediate | |
5874 | subprocess. That isn't really right, but it's better than any | |
5875 | obvious alternative. */ | |
5876 | if (no_pgrp) | |
5877 | { | |
6bfd98e7 | 5878 | kill (p->pid, signo); |
d0d6b7c5 JB |
5879 | return; |
5880 | } | |
5881 | ||
5882 | /* gid may be a pid, or minus a pgrp's number */ | |
5883 | #ifdef TIOCSIGSEND | |
5884 | if (!NILP (current_group)) | |
16782258 | 5885 | { |
60f0fb11 | 5886 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
5887 | EMACS_KILLPG (gid, signo); |
5888 | } | |
d0d6b7c5 JB |
5889 | else |
5890 | { | |
6bfd98e7 | 5891 | gid = - p->pid; |
d0d6b7c5 JB |
5892 | kill (gid, signo); |
5893 | } | |
301c3fe4 | 5894 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5895 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5896 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5897 | } |
5898 | ||
5899 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5900 | doc: /* Interrupt process PROCESS. |
5901 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5902 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5903 | Second arg CURRENT-GROUP non-nil means send signal to |
5904 | the current process-group of the process's controlling terminal | |
5905 | rather than to the process's own process group. | |
5906 | If the process is a shell, this means interrupt current subjob | |
5907 | rather than the shell. | |
5908 | ||
5909 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5910 | don't send the signal. */) | |
5842a27b | 5911 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5912 | { |
5913 | process_send_signal (process, SIGINT, current_group, 0); | |
5914 | return process; | |
5915 | } | |
5916 | ||
5917 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5918 | doc: /* Kill process PROCESS. May be process or name of one. |
5919 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5920 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5921 | { |
5922 | process_send_signal (process, SIGKILL, current_group, 0); | |
5923 | return process; | |
5924 | } | |
5925 | ||
5926 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5927 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5928 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5929 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5930 | { |
5931 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5932 | return process; | |
5933 | } | |
5934 | ||
5935 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5936 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5937 | See function `interrupt-process' for more details on usage. |
d888760c GM |
5938 | If PROCESS is a network or serial process, inhibit handling of incoming |
5939 | traffic. */) | |
5842a27b | 5940 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 5941 | { |
d888760c | 5942 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
5943 | { |
5944 | struct Lisp_Process *p; | |
177c0ea7 | 5945 | |
e690ca94 KS |
5946 | p = XPROCESS (process); |
5947 | if (NILP (p->command) | |
60f0fb11 | 5948 | && p->infd >= 0) |
e690ca94 | 5949 | { |
60f0fb11 SM |
5950 | FD_CLR (p->infd, &input_wait_mask); |
5951 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
5952 | } |
5953 | p->command = Qt; | |
5954 | return process; | |
5955 | } | |
d0d6b7c5 | 5956 | #ifndef SIGTSTP |
a9a73d6c | 5957 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
5958 | #else |
5959 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5960 | #endif | |
5961 | return process; | |
5962 | } | |
5963 | ||
5964 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5965 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5966 | See function `interrupt-process' for more details on usage. |
d888760c GM |
5967 | If PROCESS is a network or serial process, resume handling of incoming |
5968 | traffic. */) | |
5842a27b | 5969 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 5970 | { |
d888760c | 5971 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
5972 | { |
5973 | struct Lisp_Process *p; | |
5974 | ||
5975 | p = XPROCESS (process); | |
5976 | if (EQ (p->command, Qt) | |
60f0fb11 | 5977 | && p->infd >= 0 |
e690ca94 KS |
5978 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
5979 | { | |
60f0fb11 SM |
5980 | FD_SET (p->infd, &input_wait_mask); |
5981 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
5982 | #ifdef WINDOWSNT |
5983 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
5984 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 5985 | #else /* not WINDOWSNT */ |
d888760c | 5986 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 5987 | #endif /* not WINDOWSNT */ |
e690ca94 KS |
5988 | } |
5989 | p->command = Qnil; | |
5990 | return process; | |
5991 | } | |
d0d6b7c5 JB |
5992 | #ifdef SIGCONT |
5993 | process_send_signal (process, SIGCONT, current_group, 0); | |
5994 | #else | |
a9a73d6c | 5995 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
5996 | #endif |
5997 | return process; | |
5998 | } | |
5999 | ||
6000 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6001 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6002 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6003 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6004 | process to signal; in this case, the process need not be a child of |
6005 | this Emacs. | |
fdb82f93 | 6006 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6007 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6008 | { |
6bfd98e7 | 6009 | pid_t pid; |
cdd5ea86 KS |
6010 | |
6011 | if (INTEGERP (process)) | |
6012 | { | |
6bfd98e7 SM |
6013 | pid = XINT (process); |
6014 | goto got_it; | |
6015 | } | |
6016 | ||
6017 | if (FLOATP (process)) | |
6018 | { | |
648f6edf | 6019 | pid = (pid_t) XFLOAT_DATA (process); |
cdd5ea86 KS |
6020 | goto got_it; |
6021 | } | |
6022 | ||
6023 | if (STRINGP (process)) | |
6024 | { | |
6025 | Lisp_Object tem; | |
6026 | if (tem = Fget_process (process), NILP (tem)) | |
6027 | { | |
6bfd98e7 SM |
6028 | pid = XINT (Fstring_to_number (process, make_number (10))); |
6029 | if (pid > 0) | |
cdd5ea86 KS |
6030 | goto got_it; |
6031 | } | |
6032 | process = tem; | |
6033 | } | |
6034 | else | |
6035 | process = get_process (process); | |
177c0ea7 | 6036 | |
cdd5ea86 KS |
6037 | if (NILP (process)) |
6038 | return process; | |
6039 | ||
6040 | CHECK_PROCESS (process); | |
6041 | pid = XPROCESS (process)->pid; | |
6bfd98e7 | 6042 | if (pid <= 0) |
cdd5ea86 KS |
6043 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
6044 | ||
6045 | got_it: | |
4766242d | 6046 | |
59324b1d | 6047 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6048 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6049 | XSETINT (sigcode, VALUE) |
6050 | ||
6051 | if (INTEGERP (sigcode)) | |
6052 | ; | |
6053 | else | |
6054 | { | |
25a48bd0 | 6055 | char *name; |
4766242d | 6056 | |
b7826503 | 6057 | CHECK_SYMBOL (sigcode); |
25a48bd0 | 6058 | name = SSDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6059 | |
ed3751c8 | 6060 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6061 | name += 3; |
6062 | ||
4766242d RS |
6063 | if (0) |
6064 | ; | |
59324b1d KS |
6065 | #ifdef SIGUSR1 |
6066 | parse_signal ("usr1", SIGUSR1); | |
6067 | #endif | |
6068 | #ifdef SIGUSR2 | |
6069 | parse_signal ("usr2", SIGUSR2); | |
6070 | #endif | |
6071 | #ifdef SIGTERM | |
6072 | parse_signal ("term", SIGTERM); | |
6073 | #endif | |
4766242d | 6074 | #ifdef SIGHUP |
59324b1d | 6075 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6076 | #endif |
6077 | #ifdef SIGINT | |
59324b1d | 6078 | parse_signal ("int", SIGINT); |
4766242d RS |
6079 | #endif |
6080 | #ifdef SIGQUIT | |
59324b1d | 6081 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6082 | #endif |
6083 | #ifdef SIGILL | |
59324b1d | 6084 | parse_signal ("ill", SIGILL); |
4766242d RS |
6085 | #endif |
6086 | #ifdef SIGABRT | |
59324b1d | 6087 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6088 | #endif |
6089 | #ifdef SIGEMT | |
59324b1d | 6090 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6091 | #endif |
6092 | #ifdef SIGKILL | |
59324b1d | 6093 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6094 | #endif |
6095 | #ifdef SIGFPE | |
59324b1d | 6096 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6097 | #endif |
6098 | #ifdef SIGBUS | |
59324b1d | 6099 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6100 | #endif |
6101 | #ifdef SIGSEGV | |
59324b1d | 6102 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6103 | #endif |
6104 | #ifdef SIGSYS | |
59324b1d | 6105 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6106 | #endif |
6107 | #ifdef SIGPIPE | |
59324b1d | 6108 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6109 | #endif |
6110 | #ifdef SIGALRM | |
59324b1d | 6111 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6112 | #endif |
6113 | #ifdef SIGURG | |
59324b1d | 6114 | parse_signal ("urg", SIGURG); |
4766242d RS |
6115 | #endif |
6116 | #ifdef SIGSTOP | |
59324b1d | 6117 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6118 | #endif |
6119 | #ifdef SIGTSTP | |
59324b1d | 6120 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6121 | #endif |
6122 | #ifdef SIGCONT | |
59324b1d | 6123 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6124 | #endif |
6125 | #ifdef SIGCHLD | |
59324b1d | 6126 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6127 | #endif |
6128 | #ifdef SIGTTIN | |
59324b1d | 6129 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6130 | #endif |
6131 | #ifdef SIGTTOU | |
59324b1d | 6132 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6133 | #endif |
6134 | #ifdef SIGIO | |
59324b1d | 6135 | parse_signal ("io", SIGIO); |
4766242d RS |
6136 | #endif |
6137 | #ifdef SIGXCPU | |
59324b1d | 6138 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6139 | #endif |
6140 | #ifdef SIGXFSZ | |
59324b1d | 6141 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6142 | #endif |
6143 | #ifdef SIGVTALRM | |
59324b1d | 6144 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6145 | #endif |
6146 | #ifdef SIGPROF | |
59324b1d | 6147 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6148 | #endif |
6149 | #ifdef SIGWINCH | |
59324b1d | 6150 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6151 | #endif |
6152 | #ifdef SIGINFO | |
59324b1d | 6153 | parse_signal ("info", SIGINFO); |
4766242d RS |
6154 | #endif |
6155 | else | |
9fa195a2 | 6156 | error ("Undefined signal name %s", name); |
4766242d RS |
6157 | } |
6158 | ||
59324b1d | 6159 | #undef parse_signal |
4766242d | 6160 | |
6bfd98e7 | 6161 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6162 | } |
6163 | ||
6164 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6165 | doc: /* Make PROCESS see end-of-file in its input. |
6166 | EOF comes after any text already sent to it. | |
6167 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6168 | nil, indicating the current buffer's process. | |
6169 | If PROCESS is a network connection, or is a process communicating | |
6170 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6171 | text to PROCESS after you call this function. |
6172 | If PROCESS is a serial process, wait until all output written to the | |
6173 | process has been transmitted to the serial port. */) | |
5842a27b | 6174 | (Lisp_Object process) |
d0d6b7c5 JB |
6175 | { |
6176 | Lisp_Object proc; | |
de7fbd09 | 6177 | struct coding_system *coding; |
d0d6b7c5 | 6178 | |
e690ca94 KS |
6179 | if (DATAGRAM_CONN_P (process)) |
6180 | return process; | |
6181 | ||
d0d6b7c5 | 6182 | proc = get_process (process); |
60f0fb11 | 6183 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6184 | |
6185 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6186 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 RS |
6187 | update_status (XPROCESS (proc)); |
6188 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6189 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6190 | |
de7fbd09 KH |
6191 | if (CODING_REQUIRE_FLUSHING (coding)) |
6192 | { | |
6193 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6194 | send_process (proc, "", 0, Qnil); | |
6195 | } | |
6196 | ||
60f0fb11 | 6197 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6198 | send_process (proc, "\004", 1, Qnil); |
a879ee6f | 6199 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6200 | { |
a7ebc409 | 6201 | #ifndef WINDOWSNT |
d888760c GM |
6202 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6203 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6204 | #endif /* not WINDOWSNT */ |
d888760c GM |
6205 | /* Do nothing on Windows because writes are blocking. */ |
6206 | } | |
d0d6b7c5 JB |
6207 | else |
6208 | { | |
4525f571 RS |
6209 | int old_outfd, new_outfd; |
6210 | ||
93853f3d | 6211 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6212 | /* If this is a network connection, or socketpair is used |
6213 | for communication with the subprocess, call shutdown to cause EOF. | |
6214 | (In some old system, shutdown to socketpair doesn't work. | |
6215 | Then we just can't win.) */ | |
a879ee6f | 6216 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6217 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6218 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6219 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6220 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6221 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6222 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6223 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6224 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6225 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6226 | if (new_outfd < 0) |
6227 | abort (); | |
60f0fb11 | 6228 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6229 | |
6230 | if (!proc_encode_coding_system[new_outfd]) | |
6231 | proc_encode_coding_system[new_outfd] | |
6232 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
72af86bd AS |
6233 | memcpy (proc_encode_coding_system[new_outfd], |
6234 | proc_encode_coding_system[old_outfd], | |
6235 | sizeof (struct coding_system)); | |
6236 | memset (proc_encode_coding_system[old_outfd], 0, | |
6237 | sizeof (struct coding_system)); | |
4525f571 | 6238 | |
60f0fb11 | 6239 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6240 | } |
d0d6b7c5 JB |
6241 | return process; |
6242 | } | |
d0d6b7c5 | 6243 | \f |
3fed8ad5 GM |
6244 | /* On receipt of a signal that a child status has changed, loop asking |
6245 | about children with changed statuses until the system says there | |
6246 | are no more. | |
177c0ea7 | 6247 | |
3fed8ad5 GM |
6248 | All we do is change the status; we do not run sentinels or print |
6249 | notifications. That is saved for the next time keyboard input is | |
6250 | done, in order to avoid timing errors. | |
6251 | ||
6252 | ** WARNING: this can be called during garbage collection. | |
6253 | Therefore, it must not be fooled by the presence of mark bits in | |
6254 | Lisp objects. | |
6255 | ||
6256 | ** USG WARNING: Although it is not obvious from the documentation | |
6257 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6258 | signal() before executing at least one wait(), otherwise the | |
6259 | handler will be called again, resulting in an infinite loop. The | |
6260 | relevant portion of the documentation reads "SIGCLD signals will be | |
6261 | queued and the signal-catching function will be continually | |
6262 | reentered until the queue is empty". Invoking signal() causes the | |
6263 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6264 | Inc. |
6265 | ||
6266 | ** Malloc WARNING: This should never call malloc either directly or | |
6267 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6268 | |
a5cfdda8 | 6269 | #ifdef SIGCHLD |
9af30bdf | 6270 | static void |
d3da34e0 | 6271 | sigchld_handler (int signo) |
d0d6b7c5 JB |
6272 | { |
6273 | int old_errno = errno; | |
6274 | Lisp_Object proc; | |
97ec208f | 6275 | struct Lisp_Process *p; |
d0d6b7c5 | 6276 | |
333f1b6f JD |
6277 | SIGNAL_THREAD_CHECK (signo); |
6278 | ||
d0d6b7c5 JB |
6279 | while (1) |
6280 | { | |
8e050977 | 6281 | pid_t pid; |
bba104c1 | 6282 | int w; |
d0d6b7c5 JB |
6283 | Lisp_Object tail; |
6284 | ||
6285 | #ifdef WNOHANG | |
6286 | #ifndef WUNTRACED | |
6287 | #define WUNTRACED 0 | |
6288 | #endif /* no WUNTRACED */ | |
6289 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 | 6290 | do |
63136da6 | 6291 | { |
29ed4d51 CY |
6292 | errno = 0; |
6293 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
29ed4d51 | 6294 | } |
e7d4a904 | 6295 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6296 | |
6297 | if (pid <= 0) | |
6298 | { | |
3fed8ad5 GM |
6299 | /* PID == 0 means no processes found, PID == -1 means a real |
6300 | failure. We have done all our job, so return. */ | |
d0d6b7c5 | 6301 | |
d0d6b7c5 JB |
6302 | errno = old_errno; |
6303 | return; | |
6304 | } | |
6305 | #else | |
6306 | pid = wait (&w); | |
6307 | #endif /* no WNOHANG */ | |
6308 | ||
6309 | /* Find the process that signaled us, and record its status. */ | |
6310 | ||
a5cfdda8 | 6311 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6312 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6313 | { |
8e050977 | 6314 | Lisp_Object xpid = XCAR (tail); |
8e50cc2d SM |
6315 | if ((INTEGERP (xpid) && pid == (pid_t) XINT (xpid)) |
6316 | || (FLOATP (xpid) && pid == (pid_t) XFLOAT_DATA (xpid))) | |
8e050977 CY |
6317 | { |
6318 | XSETCAR (tail, Qnil); | |
6319 | goto sigchld_end_of_loop; | |
6320 | } | |
a5cfdda8 KS |
6321 | } |
6322 | ||
6323 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6324 | p = 0; |
8e50cc2d | 6325 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6326 | { |
70949dac | 6327 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6328 | p = XPROCESS (proc); |
d888760c | 6329 | if (EQ (p->type, Qreal) && p->pid == pid) |
d0d6b7c5 JB |
6330 | break; |
6331 | p = 0; | |
6332 | } | |
6333 | ||
6334 | /* Look for an asynchronous process whose pid hasn't been filled | |
6335 | in yet. */ | |
6336 | if (p == 0) | |
8e50cc2d | 6337 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6338 | { |
70949dac | 6339 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6340 | p = XPROCESS (proc); |
6bfd98e7 | 6341 | if (p->pid == -1) |
d0d6b7c5 JB |
6342 | break; |
6343 | p = 0; | |
6344 | } | |
177c0ea7 | 6345 | |
d0d6b7c5 JB |
6346 | /* Change the status of the process that was found. */ |
6347 | if (p != 0) | |
6348 | { | |
e98d950b | 6349 | int clear_desc_flag = 0; |
177c0ea7 | 6350 | |
60f0fb11 | 6351 | p->tick = ++process_tick; |
bba104c1 | 6352 | p->raw_status = w; |
6bfd98e7 | 6353 | p->raw_status_new = 1; |
177c0ea7 | 6354 | |
d0d6b7c5 | 6355 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6356 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6357 | && p->infd >= 0) |
e98d950b RS |
6358 | clear_desc_flag = 1; |
6359 | ||
6360 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6361 | if (clear_desc_flag) | |
6362 | { | |
60f0fb11 SM |
6363 | FD_CLR (p->infd, &input_wait_mask); |
6364 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6365 | } |
6be429b1 | 6366 | |
214d6069 | 6367 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6368 | look around. */ |
6369 | if (input_available_clear_time) | |
6370 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6371 | } |
6372 | ||
a5cfdda8 KS |
6373 | /* There was no asynchronous process found for that pid: we have |
6374 | a synchronous process. */ | |
d0d6b7c5 JB |
6375 | else |
6376 | { | |
6377 | synch_process_alive = 0; | |
6378 | ||
6379 | /* Report the status of the synchronous process. */ | |
6380 | if (WIFEXITED (w)) | |
6381 | synch_process_retcode = WRETCODE (w); | |
6382 | else if (WIFSIGNALED (w)) | |
63136da6 | 6383 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6384 | |
214d6069 | 6385 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6386 | look around. */ |
6387 | if (input_available_clear_time) | |
6388 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6389 | } |
6390 | ||
a5cfdda8 KS |
6391 | sigchld_end_of_loop: |
6392 | ; | |
6393 | ||
d0d6b7c5 JB |
6394 | /* On some systems, we must return right away. |
6395 | If any more processes want to signal us, we will | |
6396 | get another signal. | |
6397 | Otherwise (on systems that have WNOHANG), loop around | |
6398 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6399 | #if (defined WINDOWSNT \ |
8a2a6032 | 6400 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6401 | && !(defined HPUX && defined WNOHANG))) |
d0d6b7c5 JB |
6402 | errno = old_errno; |
6403 | return; | |
6404 | #endif /* USG, but not HPUX with WNOHANG */ | |
6405 | } | |
6406 | } | |
a5cfdda8 | 6407 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6408 | \f |
6409 | ||
6410 | static Lisp_Object | |
d3da34e0 | 6411 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6412 | { |
70949dac | 6413 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6414 | return Qnil; |
6415 | } | |
6416 | ||
3b9a3dfa | 6417 | static Lisp_Object |
b93aacde | 6418 | exec_sentinel_error_handler (Lisp_Object error_val) |
3b9a3dfa | 6419 | { |
b93aacde | 6420 | cmd_error_internal (error_val, "error in process sentinel: "); |
3b9a3dfa RS |
6421 | Vinhibit_quit = Qt; |
6422 | update_echo_area (); | |
833ba342 | 6423 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6424 | return Qt; |
3b9a3dfa RS |
6425 | } |
6426 | ||
d0d6b7c5 | 6427 | static void |
d3da34e0 | 6428 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6429 | { |
aba7731a | 6430 | Lisp_Object sentinel, odeactivate; |
d0d6b7c5 | 6431 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6432 | int count = SPECPDL_INDEX (); |
4da2f5be | 6433 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6434 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6435 | |
84af9896 RS |
6436 | if (inhibit_sentinels) |
6437 | return; | |
6438 | ||
dfc21838 RS |
6439 | /* No need to gcpro these, because all we do with them later |
6440 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6441 | odeactivate = Vdeactivate_mark; |
aba7731a PE |
6442 | #if 0 |
6443 | Lisp_Object obuffer, okeymap; | |
dfc21838 | 6444 | XSETBUFFER (obuffer, current_buffer); |
4b4deea2 | 6445 | okeymap = BVAR (current_buffer, keymap); |
aba7731a | 6446 | #endif |
dfc21838 | 6447 | |
97e53006 SM |
6448 | /* There's no good reason to let sentinels change the current |
6449 | buffer, and many callers of accept-process-output, sit-for, and | |
6450 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 6451 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
97e53006 | 6452 | |
d0d6b7c5 JB |
6453 | sentinel = p->sentinel; |
6454 | if (NILP (sentinel)) | |
6455 | return; | |
6456 | ||
6457 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6458 | assure that it gets restored no matter how the sentinel exits. */ | |
6459 | p->sentinel = Qnil; | |
6460 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6461 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6462 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6463 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6464 | |
4da2f5be RS |
6465 | /* In case we get recursively called, |
6466 | and we already saved the match data nonrecursively, | |
6467 | save the same match data in safely recursive fashion. */ | |
6468 | if (outer_running_asynch_code) | |
6469 | { | |
6470 | Lisp_Object tem; | |
89f2614d KS |
6471 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6472 | restore_search_regs (); | |
6473 | record_unwind_save_match_data (); | |
6474 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6475 | } |
6476 | ||
6477 | /* For speed, if a search happens within this code, | |
6478 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6479 | running_asynch_code = 1; |
4da2f5be | 6480 | |
3b9a3dfa RS |
6481 | internal_condition_case_1 (read_process_output_call, |
6482 | Fcons (sentinel, | |
6483 | Fcons (proc, Fcons (reason, Qnil))), | |
6484 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6485 | exec_sentinel_error_handler); | |
4da2f5be RS |
6486 | |
6487 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6488 | restore_search_regs (); |
4da2f5be | 6489 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6490 | |
6491 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6492 | |
6493 | /* Restore waiting_for_user_input_p as it was | |
6494 | when we were called, in case the filter clobbered it. */ | |
6495 | waiting_for_user_input_p = waiting; | |
6496 | ||
7973cfa8 | 6497 | #if 0 |
dfc21838 RS |
6498 | if (! EQ (Fcurrent_buffer (), obuffer) |
6499 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6500 | #endif |
927e08be RS |
6501 | /* But do it only if the caller is actually going to read events. |
6502 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6503 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6504 | if (waiting_for_user_input_p == -1) |
6505 | record_asynch_buffer_change (); | |
8fb3cf64 | 6506 | |
2ea6d561 | 6507 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6508 | } |
6509 | ||
6510 | /* Report all recent events of a change in process status | |
6511 | (either run the sentinel or output a message). | |
b50fe468 RS |
6512 | This is usually done while Emacs is waiting for keyboard input |
6513 | but can be done at other times. */ | |
d0d6b7c5 | 6514 | |
ff6daed3 | 6515 | static void |
d3da34e0 | 6516 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6517 | { |
6518 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6519 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6520 | struct gcpro gcpro1, gcpro2; |
6521 | ||
2e4149a8 KH |
6522 | tail = Qnil; |
6523 | msg = Qnil; | |
d0d6b7c5 JB |
6524 | /* We need to gcpro tail; if read_process_output calls a filter |
6525 | which deletes a process and removes the cons to which tail points | |
6526 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6527 | reference. */ | |
6528 | GCPRO2 (tail, msg); | |
6529 | ||
30623085 RS |
6530 | /* Set this now, so that if new processes are created by sentinels |
6531 | that we run, we get called again to handle their status changes. */ | |
6532 | update_tick = process_tick; | |
6533 | ||
99784d63 | 6534 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6535 | { |
30623085 RS |
6536 | Lisp_Object symbol; |
6537 | register struct Lisp_Process *p; | |
6538 | ||
99784d63 | 6539 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6540 | p = XPROCESS (proc); |
6541 | ||
60f0fb11 | 6542 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6543 | { |
60f0fb11 | 6544 | p->update_tick = p->tick; |
d0d6b7c5 | 6545 | |
30623085 | 6546 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6547 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6548 | && ! EQ (p->status, Qconnect) |
e690ca94 | 6549 | && ! EQ (p->status, Qlisten) |
d888760c GM |
6550 | /* Network or serial process not stopped: */ |
6551 | && ! EQ (p->command, Qt) | |
60f0fb11 | 6552 | && p->infd >= 0 |
ff6daed3 | 6553 | && p != deleting_process |
60f0fb11 | 6554 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6555 | |
30623085 | 6556 | buffer = p->buffer; |
d0d6b7c5 | 6557 | |
30623085 | 6558 | /* Get the text to use for the message. */ |
6bfd98e7 | 6559 | if (p->raw_status_new) |
30623085 | 6560 | update_status (p); |
116c423c | 6561 | msg = status_message (p); |
d0d6b7c5 | 6562 | |
30623085 RS |
6563 | /* If process is terminated, deactivate it or delete it. */ |
6564 | symbol = p->status; | |
6565 | if (CONSP (p->status)) | |
70949dac | 6566 | symbol = XCAR (p->status); |
d0d6b7c5 | 6567 | |
30623085 RS |
6568 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6569 | || EQ (symbol, Qclosed)) | |
6570 | { | |
6571 | if (delete_exited_processes) | |
6572 | remove_process (proc); | |
6573 | else | |
6574 | deactivate_process (proc); | |
6575 | } | |
d0d6b7c5 | 6576 | |
0ad61fe7 RS |
6577 | /* The actions above may have further incremented p->tick. |
6578 | So set p->update_tick again | |
6579 | so that an error in the sentinel will not cause | |
6580 | this code to be run again. */ | |
60f0fb11 | 6581 | p->update_tick = p->tick; |
30623085 RS |
6582 | /* Now output the message suitably. */ |
6583 | if (!NILP (p->sentinel)) | |
6584 | exec_sentinel (proc, msg); | |
6585 | /* Don't bother with a message in the buffer | |
6586 | when a process becomes runnable. */ | |
6587 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6588 | { | |
01f5787b | 6589 | Lisp_Object tem; |
30623085 | 6590 | struct buffer *old = current_buffer; |
f877c546 EZ |
6591 | EMACS_INT opoint, opoint_byte; |
6592 | EMACS_INT before, before_byte; | |
2e4149a8 | 6593 | |
30623085 RS |
6594 | /* Avoid error if buffer is deleted |
6595 | (probably that's why the process is dead, too) */ | |
4b4deea2 | 6596 | if (NILP (BVAR (XBUFFER (buffer), name))) |
30623085 RS |
6597 | continue; |
6598 | Fset_buffer (buffer); | |
12ca5cdf | 6599 | |
6ec8bbd2 | 6600 | opoint = PT; |
d8a2934e | 6601 | opoint_byte = PT_BYTE; |
30623085 RS |
6602 | /* Insert new output into buffer |
6603 | at the current end-of-output marker, | |
6604 | thus preserving logical ordering of input and output. */ | |
6605 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6606 | Fgoto_char (p->mark); |
30623085 | 6607 | else |
d8a2934e | 6608 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6609 | |
6610 | before = PT; | |
d8a2934e | 6611 | before_byte = PT_BYTE; |
30623085 | 6612 | |
4b4deea2 TT |
6613 | tem = BVAR (current_buffer, read_only); |
6614 | BVAR (current_buffer, read_only) = Qnil; | |
30623085 RS |
6615 | insert_string ("\nProcess "); |
6616 | Finsert (1, &p->name); | |
6617 | insert_string (" "); | |
6618 | Finsert (1, &msg); | |
4b4deea2 | 6619 | BVAR (current_buffer, read_only) = tem; |
d8a2934e | 6620 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6621 | |
12ca5cdf | 6622 | if (opoint >= before) |
d8a2934e RS |
6623 | SET_PT_BOTH (opoint + (PT - before), |
6624 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6625 | else |
d8a2934e | 6626 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6627 | |
30623085 | 6628 | set_buffer_internal (old); |
d0d6b7c5 | 6629 | } |
30623085 RS |
6630 | } |
6631 | } /* end for */ | |
d0d6b7c5 JB |
6632 | |
6633 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6634 | UNGCPRO; |
6635 | } | |
0fa1789e KH |
6636 | |
6637 | \f | |
6638 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6639 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6640 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6641 | DECODING will be used to decode subprocess output and ENCODING to | |
6642 | encode subprocess input. */) | |
5842a27b | 6643 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6644 | { |
6645 | register struct Lisp_Process *p; | |
6646 | ||
f3d9532b JB |
6647 | CHECK_PROCESS (process); |
6648 | p = XPROCESS (process); | |
60f0fb11 | 6649 | if (p->infd < 0) |
d5db4077 | 6650 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6651 | if (p->outfd < 0) |
d5db4077 | 6652 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6653 | Fcheck_coding_system (decoding); |
6654 | Fcheck_coding_system (encoding); | |
76d812bb | 6655 | encoding = coding_inherit_eol_type (encoding, Qnil); |
03f04413 KH |
6656 | p->decode_coding_system = decoding; |
6657 | p->encode_coding_system = encoding; | |
f3d9532b | 6658 | setup_process_coding_systems (process); |
0fa1789e KH |
6659 | |
6660 | return Qnil; | |
6661 | } | |
6662 | ||
6663 | DEFUN ("process-coding-system", | |
6664 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6665 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6666 | (register Lisp_Object process) |
0fa1789e | 6667 | { |
f3d9532b JB |
6668 | CHECK_PROCESS (process); |
6669 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6670 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6671 | } |
03f04413 KH |
6672 | |
6673 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6674 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6675 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6676 | If FLAG is non-nil, the filter is given multibyte strings. | |
6677 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6678 | all character code conversion except for end-of-line conversion is |
6679 | suppressed. */) | |
5842a27b | 6680 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6681 | { |
6682 | register struct Lisp_Process *p; | |
6683 | ||
f3d9532b JB |
6684 | CHECK_PROCESS (process); |
6685 | p = XPROCESS (process); | |
5431bd6a SM |
6686 | if (NILP (flag)) |
6687 | p->decode_coding_system = raw_text_coding_system (p->decode_coding_system); | |
f3d9532b | 6688 | setup_process_coding_systems (process); |
03f04413 KH |
6689 | |
6690 | return Qnil; | |
6691 | } | |
6692 | ||
6693 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6694 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6695 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6696 | (Lisp_Object process) |
03f04413 KH |
6697 | { |
6698 | register struct Lisp_Process *p; | |
5431bd6a | 6699 | struct coding_system *coding; |
03f04413 | 6700 | |
f3d9532b JB |
6701 | CHECK_PROCESS (process); |
6702 | p = XPROCESS (process); | |
5431bd6a SM |
6703 | coding = proc_decode_coding_system[p->infd]; |
6704 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6705 | } |
6706 | ||
6707 | ||
d0d6b7c5 | 6708 | \f |
cb768704 | 6709 | |
4475bec4 PE |
6710 | # ifdef HAVE_GPM |
6711 | ||
994d9841 | 6712 | void |
d3da34e0 | 6713 | add_gpm_wait_descriptor (int desc) |
994d9841 | 6714 | { |
3fad2ad2 | 6715 | add_keyboard_wait_descriptor (desc); |
994d9841 NR |
6716 | } |
6717 | ||
994d9841 | 6718 | void |
d3da34e0 | 6719 | delete_gpm_wait_descriptor (int desc) |
994d9841 | 6720 | { |
3fad2ad2 | 6721 | delete_keyboard_wait_descriptor (desc); |
994d9841 NR |
6722 | } |
6723 | ||
4475bec4 PE |
6724 | # endif |
6725 | ||
006c5daa PE |
6726 | # ifdef SIGIO |
6727 | ||
a69281ff RS |
6728 | /* Return nonzero if *MASK has a bit set |
6729 | that corresponds to one of the keyboard input descriptors. */ | |
6730 | ||
ff6daed3 | 6731 | static int |
d3da34e0 | 6732 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6733 | { |
6734 | int fd; | |
6735 | ||
3fad2ad2 | 6736 | for (fd = 0; fd <= max_input_desc; fd++) |
a69281ff RS |
6737 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6738 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6739 | return 1; | |
6740 | ||
6741 | return 0; | |
6742 | } | |
006c5daa | 6743 | # endif |
934e2a68 | 6744 | |
f388c88a | 6745 | #else /* not subprocesses */ |
934e2a68 | 6746 | |
f388c88a EZ |
6747 | /* Defined on msdos.c. */ |
6748 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
6749 | EMACS_TIME *); | |
934e2a68 | 6750 | |
f388c88a EZ |
6751 | /* Implementation of wait_reading_process_output, assuming that there |
6752 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6753 | |
f388c88a | 6754 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6755 | |
f388c88a EZ |
6756 | time_limit is: |
6757 | timeout in seconds, or | |
6758 | zero for no limit, or | |
6759 | -1 means gobble data immediately available but don't wait for any. | |
934e2a68 | 6760 | |
f388c88a EZ |
6761 | read_kbd is a Lisp_Object: |
6762 | 0 to ignore keyboard input, or | |
6763 | 1 to return when input is available, or | |
6764 | -1 means caller will actually read the input, so don't throw to | |
6765 | the quit handler. | |
934e2a68 | 6766 | |
f388c88a EZ |
6767 | see full version for other parameters. We know that wait_proc will |
6768 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6769 | |
f388c88a EZ |
6770 | do_display != 0 means redisplay should be done to show subprocess |
6771 | output that arrives. | |
934e2a68 | 6772 | |
f388c88a EZ |
6773 | Return true if we received input from any process. */ |
6774 | ||
6775 | int | |
1408902e EZ |
6776 | wait_reading_process_output (int time_limit, int microsecs, int read_kbd, |
6777 | int do_display, | |
6778 | Lisp_Object wait_for_cell, | |
6779 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6780 | { |
f388c88a EZ |
6781 | register int nfds; |
6782 | EMACS_TIME end_time, timeout; | |
6783 | SELECT_TYPE waitchannels; | |
6784 | int xerrno; | |
d0d6b7c5 | 6785 | |
f388c88a EZ |
6786 | /* What does time_limit really mean? */ |
6787 | if (time_limit || microsecs) | |
6788 | { | |
6789 | EMACS_GET_TIME (end_time); | |
6790 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
6791 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
6792 | } | |
84af9896 | 6793 | |
f388c88a EZ |
6794 | /* Turn off periodic alarms (in case they are in use) |
6795 | and then turn off any other atimers, | |
6796 | because the select emulator uses alarms. */ | |
6797 | stop_polling (); | |
6798 | turn_on_atimers (0); | |
d0d6b7c5 | 6799 | |
f388c88a EZ |
6800 | while (1) |
6801 | { | |
6802 | int timeout_reduced_for_timers = 0; | |
dd2281ae | 6803 | |
f388c88a EZ |
6804 | /* If calling from keyboard input, do not quit |
6805 | since we want to return C-g as an input character. | |
6806 | Otherwise, do pending quit if requested. */ | |
6807 | if (read_kbd >= 0) | |
6808 | QUIT; | |
bad49fc7 | 6809 | |
f388c88a EZ |
6810 | /* Exit now if the cell we're waiting for became non-nil. */ |
6811 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6812 | break; | |
0a65b032 | 6813 | |
bae8d137 RS |
6814 | /* Compute time from now till when time limit is up */ |
6815 | /* Exit if already run out */ | |
52fd88d3 EZ |
6816 | if (time_limit == -1) |
6817 | { | |
6818 | /* -1 specified for timeout means | |
6819 | gobble output available now | |
6820 | but don't wait at all. */ | |
6821 | ||
6822 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
6823 | } | |
6824 | else if (time_limit || microsecs) | |
6720a7fb | 6825 | { |
f694e5d2 KH |
6826 | EMACS_GET_TIME (timeout); |
6827 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
6828 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
6829 | break; |
6830 | } | |
52fd88d3 EZ |
6831 | else |
6832 | { | |
6833 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
6834 | } | |
6720a7fb | 6835 | |
bae8d137 RS |
6836 | /* If our caller will not immediately handle keyboard events, |
6837 | run timer events directly. | |
6838 | (Callers that will immediately read keyboard events | |
6839 | call timer_delay on their own.) */ | |
f3fbd155 | 6840 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6841 | { |
6842 | EMACS_TIME timer_delay; | |
0a65b032 | 6843 | |
9baacf76 | 6844 | do |
0a65b032 | 6845 | { |
9baacf76 | 6846 | int old_timers_run = timers_run; |
f868cd8a | 6847 | timer_delay = timer_check (); |
9baacf76 GM |
6848 | if (timers_run != old_timers_run && do_display) |
6849 | /* We must retry, since a timer may have requeued itself | |
6850 | and that could alter the time delay. */ | |
3007ebfb | 6851 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6852 | else |
6853 | break; | |
0a65b032 | 6854 | } |
9baacf76 | 6855 | while (!detect_input_pending ()); |
0a65b032 | 6856 | |
52fd88d3 | 6857 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6858 | if (read_kbd != 0 |
52fd88d3 EZ |
6859 | && requeued_events_pending_p ()) |
6860 | break; | |
6861 | ||
f694e5d2 | 6862 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
6863 | { |
6864 | EMACS_TIME difference; | |
f694e5d2 | 6865 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
6866 | if (EMACS_TIME_NEG_P (difference)) |
6867 | { | |
f694e5d2 | 6868 | timeout = timer_delay; |
bae8d137 RS |
6869 | timeout_reduced_for_timers = 1; |
6870 | } | |
6871 | } | |
6872 | } | |
6873 | ||
6720a7fb JB |
6874 | /* Cause C-g and alarm signals to take immediate action, |
6875 | and cause input available signals to zero out timeout. */ | |
b89a415a | 6876 | if (read_kbd < 0) |
6720a7fb JB |
6877 | set_waiting_for_input (&timeout); |
6878 | ||
0a65b032 RS |
6879 | /* Wait till there is something to do. */ |
6880 | ||
b89a415a | 6881 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
6882 | FD_ZERO (&waitchannels); |
6883 | else | |
6884 | FD_SET (0, &waitchannels); | |
6885 | ||
ff11dfa1 | 6886 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6887 | reprocess its display stuff. */ |
5164ee8e | 6888 | if (frame_garbaged && do_display) |
0a65b032 RS |
6889 | { |
6890 | clear_waiting_for_input (); | |
3007ebfb | 6891 | redisplay_preserve_echo_area (15); |
b89a415a | 6892 | if (read_kbd < 0) |
0a65b032 RS |
6893 | set_waiting_for_input (&timeout); |
6894 | } | |
6720a7fb | 6895 | |
b89a415a | 6896 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
6897 | { |
6898 | nfds = 0; | |
6899 | FD_ZERO (&waitchannels); | |
6900 | } | |
6901 | else | |
6902 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
6903 | &timeout); | |
f694e5d2 KH |
6904 | |
6905 | xerrno = errno; | |
6720a7fb JB |
6906 | |
6907 | /* Make C-g and alarm signals set flags again */ | |
6908 | clear_waiting_for_input (); | |
6909 | ||
6910 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 6911 | do_pending_window_change (0); |
6720a7fb | 6912 | |
f694e5d2 KH |
6913 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
6914 | /* We waited the full specified time, so return now. */ | |
6915 | break; | |
6916 | ||
6720a7fb JB |
6917 | if (nfds == -1) |
6918 | { | |
6919 | /* If the system call was interrupted, then go around the | |
6920 | loop again. */ | |
f694e5d2 | 6921 | if (xerrno == EINTR) |
8db121c4 | 6922 | FD_ZERO (&waitchannels); |
f694e5d2 | 6923 | else |
68c45bf0 | 6924 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 6925 | } |
6720a7fb | 6926 | |
f694e5d2 KH |
6927 | /* Check for keyboard input */ |
6928 | ||
b89a415a | 6929 | if (read_kbd |
78c1afb6 | 6930 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 6931 | { |
78c1afb6 | 6932 | swallow_events (do_display); |
f694e5d2 | 6933 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 6934 | break; |
78c1afb6 EZ |
6935 | } |
6936 | ||
52fd88d3 | 6937 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6938 | if (read_kbd |
52fd88d3 EZ |
6939 | && requeued_events_pending_p ()) |
6940 | break; | |
6941 | ||
f854a00b RS |
6942 | /* If wait_for_cell. check for keyboard input |
6943 | but don't run any timers. | |
6944 | ??? (It seems wrong to me to check for keyboard | |
6945 | input at all when wait_for_cell, but the code | |
6946 | has been this way since July 1994. | |
6947 | Try changing this after version 19.31.) */ | |
f3fbd155 | 6948 | if (! NILP (wait_for_cell) |
f854a00b RS |
6949 | && detect_input_pending ()) |
6950 | { | |
6951 | swallow_events (do_display); | |
6952 | if (detect_input_pending ()) | |
6953 | break; | |
6954 | } | |
6955 | ||
0a65b032 | 6956 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6957 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 6958 | break; |
6720a7fb JB |
6959 | } |
6960 | ||
a87b802f JB |
6961 | start_polling (); |
6962 | ||
6720a7fb JB |
6963 | return 0; |
6964 | } | |
6965 | ||
f388c88a EZ |
6966 | #endif /* not subprocesses */ |
6967 | ||
6968 | /* The following functions are needed even if async subprocesses are | |
6969 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 6970 | |
01faa934 DN |
6971 | /* Add DESC to the set of keyboard input descriptors. */ |
6972 | ||
6973 | void | |
6974 | add_keyboard_wait_descriptor (int desc) | |
6975 | { | |
bf05eed6 | 6976 | #ifdef subprocesses /* actually means "not MSDOS" */ |
01faa934 DN |
6977 | FD_SET (desc, &input_wait_mask); |
6978 | FD_SET (desc, &non_process_wait_mask); | |
3fad2ad2 J |
6979 | if (desc > max_input_desc) |
6980 | max_input_desc = desc; | |
bf05eed6 | 6981 | #endif |
01faa934 DN |
6982 | } |
6983 | ||
6984 | /* From now on, do not expect DESC to give keyboard input. */ | |
6985 | ||
6986 | void | |
6987 | delete_keyboard_wait_descriptor (int desc) | |
6988 | { | |
bf05eed6 | 6989 | #ifdef subprocesses |
01faa934 | 6990 | int fd; |
3fad2ad2 | 6991 | int lim = max_input_desc; |
01faa934 DN |
6992 | |
6993 | FD_CLR (desc, &input_wait_mask); | |
6994 | FD_CLR (desc, &non_process_wait_mask); | |
6995 | ||
3fad2ad2 | 6996 | if (desc == max_input_desc) |
01faa934 | 6997 | for (fd = 0; fd < lim; fd++) |
3fad2ad2 J |
6998 | if (FD_ISSET (fd, &input_wait_mask) || FD_ISSET (fd, &write_mask)) |
6999 | max_input_desc = fd; | |
bf05eed6 | 7000 | #endif |
01faa934 DN |
7001 | } |
7002 | ||
fc549af9 EZ |
7003 | /* Setup coding systems of PROCESS. */ |
7004 | ||
7005 | void | |
7006 | setup_process_coding_systems (Lisp_Object process) | |
7007 | { | |
7008 | #ifdef subprocesses | |
7009 | struct Lisp_Process *p = XPROCESS (process); | |
7010 | int inch = p->infd; | |
7011 | int outch = p->outfd; | |
7012 | Lisp_Object coding_system; | |
7013 | ||
7014 | if (inch < 0 || outch < 0) | |
7015 | return; | |
7016 | ||
7017 | if (!proc_decode_coding_system[inch]) | |
7018 | proc_decode_coding_system[inch] | |
7019 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
7020 | coding_system = p->decode_coding_system; | |
7021 | if (! NILP (p->filter)) | |
7022 | ; | |
7023 | else if (BUFFERP (p->buffer)) | |
7024 | { | |
4b4deea2 | 7025 | if (NILP (BVAR (XBUFFER (p->buffer), enable_multibyte_characters))) |
fc549af9 EZ |
7026 | coding_system = raw_text_coding_system (coding_system); |
7027 | } | |
7028 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7029 | ||
7030 | if (!proc_encode_coding_system[outch]) | |
7031 | proc_encode_coding_system[outch] | |
7032 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
7033 | setup_coding_system (p->encode_coding_system, | |
7034 | proc_encode_coding_system[outch]); | |
7035 | #endif | |
7036 | } | |
7037 | ||
7038 | /* Close all descriptors currently in use for communication | |
7039 | with subprocess. This is used in a newly-forked subprocess | |
7040 | to get rid of irrelevant descriptors. */ | |
7041 | ||
7042 | void | |
7043 | close_process_descs (void) | |
7044 | { | |
7045 | #ifndef DOS_NT | |
7046 | int i; | |
7047 | for (i = 0; i < MAXDESC; i++) | |
7048 | { | |
7049 | Lisp_Object process; | |
7050 | process = chan_process[i]; | |
7051 | if (!NILP (process)) | |
7052 | { | |
7053 | int in = XPROCESS (process)->infd; | |
7054 | int out = XPROCESS (process)->outfd; | |
7055 | if (in >= 0) | |
7056 | emacs_close (in); | |
7057 | if (out >= 0 && in != out) | |
7058 | emacs_close (out); | |
7059 | } | |
7060 | } | |
7061 | #endif | |
7062 | } | |
7063 | ||
6720a7fb | 7064 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7065 | doc: /* Return the (or a) process associated with BUFFER. |
7066 | BUFFER may be a buffer or the name of one. */) | |
7067 | (register Lisp_Object buffer) | |
6720a7fb | 7068 | { |
f388c88a EZ |
7069 | #ifdef subprocesses |
7070 | register Lisp_Object buf, tail, proc; | |
7071 | ||
7072 | if (NILP (buffer)) return Qnil; | |
7073 | buf = Fget_buffer (buffer); | |
7074 | if (NILP (buf)) return Qnil; | |
7075 | ||
7076 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7077 | { | |
7078 | proc = Fcdr (XCAR (tail)); | |
7079 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) | |
7080 | return proc; | |
7081 | } | |
7082 | #endif /* subprocesses */ | |
6720a7fb JB |
7083 | return Qnil; |
7084 | } | |
7085 | ||
52a1b894 | 7086 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7087 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7088 | 1, 1, 0, | |
f388c88a EZ |
7089 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7090 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7091 | associated with PROCESS will inherit the coding system used to decode | |
7092 | the process output. */) | |
5842a27b | 7093 | (register Lisp_Object process) |
52a1b894 | 7094 | { |
f388c88a EZ |
7095 | #ifdef subprocesses |
7096 | CHECK_PROCESS (process); | |
7097 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7098 | #else | |
52a1b894 EZ |
7099 | /* Ignore the argument and return the value of |
7100 | inherit-process-coding-system. */ | |
7101 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7102 | #endif |
52a1b894 EZ |
7103 | } |
7104 | ||
6720a7fb | 7105 | /* Kill all processes associated with `buffer'. |
f388c88a | 7106 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7107 | |
d9bb0c32 | 7108 | void |
f388c88a | 7109 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7110 | { |
f388c88a EZ |
7111 | #ifdef subprocesses |
7112 | Lisp_Object tail, proc; | |
7113 | ||
7114 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7115 | { | |
7116 | proc = XCDR (XCAR (tail)); | |
7117 | if (PROCESSP (proc) | |
7118 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) | |
7119 | { | |
7120 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7121 | Fdelete_process (proc); | |
7122 | else if (XPROCESS (proc)->infd >= 0) | |
7123 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7124 | } | |
7125 | } | |
7126 | #else /* subprocesses */ | |
7127 | /* Since we have no subprocesses, this does nothing. */ | |
7128 | #endif /* subprocesses */ | |
6720a7fb JB |
7129 | } |
7130 | ||
a7ca3326 | 7131 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, |
16a97296 | 7132 | Swaiting_for_user_input_p, 0, 0, 0, |
77defa9a EZ |
7133 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
7134 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7135 | (void) | |
7136 | { | |
7137 | #ifdef subprocesses | |
7138 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7139 | #else | |
7140 | return Qnil; | |
7141 | #endif | |
7142 | } | |
7143 | ||
d568829b EZ |
7144 | /* Stop reading input from keyboard sources. */ |
7145 | ||
7146 | void | |
7147 | hold_keyboard_input (void) | |
7148 | { | |
7149 | kbd_is_on_hold = 1; | |
7150 | } | |
7151 | ||
7152 | /* Resume reading input from keyboard sources. */ | |
7153 | ||
7154 | void | |
7155 | unhold_keyboard_input (void) | |
7156 | { | |
7157 | kbd_is_on_hold = 0; | |
7158 | } | |
7159 | ||
7160 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7161 | ||
7162 | int | |
7163 | kbd_on_hold_p (void) | |
7164 | { | |
7165 | return kbd_is_on_hold; | |
7166 | } | |
7167 | ||
f388c88a EZ |
7168 | \f |
7169 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7170 | ||
934e2a68 EZ |
7171 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7172 | 0, 0, 0, | |
7173 | doc: /* Return a list of numerical process IDs of all running processes. | |
7174 | If this functionality is unsupported, return nil. | |
7175 | ||
f388c88a EZ |
7176 | See `process-attributes' for getting attributes of a process given its ID. */) |
7177 | (void) | |
7178 | { | |
7179 | return list_system_processes (); | |
7180 | } | |
7181 | ||
7182 | DEFUN ("process-attributes", Fprocess_attributes, | |
7183 | Sprocess_attributes, 1, 1, 0, | |
7184 | doc: /* Return attributes of the process given by its PID, a number. | |
7185 | ||
7186 | Value is an alist where each element is a cons cell of the form | |
7187 | ||
7188 | \(KEY . VALUE) | |
7189 | ||
7190 | If this functionality is unsupported, the value is nil. | |
7191 | ||
7192 | See `list-system-processes' for getting a list of all process IDs. | |
7193 | ||
7194 | The KEYs of the attributes that this function may return are listed | |
7195 | below, together with the type of the associated VALUE (in parentheses). | |
7196 | Not all platforms support all of these attributes; unsupported | |
7197 | attributes will not appear in the returned alist. | |
7198 | Unless explicitly indicated otherwise, numbers can have either | |
7199 | integer or floating point values. | |
7200 | ||
7201 | euid -- Effective user User ID of the process (number) | |
7202 | user -- User name corresponding to euid (string) | |
7203 | egid -- Effective user Group ID of the process (number) | |
7204 | group -- Group name corresponding to egid (string) | |
7205 | comm -- Command name (executable name only) (string) | |
7206 | state -- Process state code, such as "S", "R", or "T" (string) | |
7207 | ppid -- Parent process ID (number) | |
7208 | pgrp -- Process group ID (number) | |
7209 | sess -- Session ID, i.e. process ID of session leader (number) | |
7210 | ttname -- Controlling tty name (string) | |
7211 | tpgid -- ID of foreground process group on the process's tty (number) | |
7212 | minflt -- number of minor page faults (number) | |
7213 | majflt -- number of major page faults (number) | |
7214 | cminflt -- cumulative number of minor page faults (number) | |
7215 | cmajflt -- cumulative number of major page faults (number) | |
7216 | utime -- user time used by the process, in the (HIGH LOW USEC) format | |
7217 | stime -- system time used by the process, in the (HIGH LOW USEC) format | |
7218 | time -- sum of utime and stime, in the (HIGH LOW USEC) format | |
7219 | cutime -- user time used by the process and its children, (HIGH LOW USEC) | |
7220 | cstime -- system time used by the process and its children, (HIGH LOW USEC) | |
7221 | ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format | |
7222 | pri -- priority of the process (number) | |
7223 | nice -- nice value of the process (number) | |
7224 | thcount -- process thread count (number) | |
7225 | start -- time the process started, in the (HIGH LOW USEC) format | |
7226 | vsize -- virtual memory size of the process in KB's (number) | |
7227 | rss -- resident set size of the process in KB's (number) | |
7228 | etime -- elapsed time the process is running, in (HIGH LOW USEC) format | |
7229 | pcpu -- percents of CPU time used by the process (floating-point number) | |
7230 | pmem -- percents of total physical memory used by process's resident set | |
7231 | (floating-point number) | |
7232 | args -- command line which invoked the process (string). */) | |
7233 | ( Lisp_Object pid) | |
7234 | { | |
7235 | return system_process_attributes (pid); | |
7236 | } | |
7237 | ||
7238 | \f | |
7239 | void | |
7240 | init_process (void) | |
7241 | { | |
7242 | #ifdef subprocesses | |
7243 | register int i; | |
7244 | ||
7245 | inhibit_sentinels = 0; | |
7246 | ||
7247 | #ifdef SIGCHLD | |
7248 | #ifndef CANNOT_DUMP | |
7249 | if (! noninteractive || initialized) | |
7250 | #endif | |
7251 | signal (SIGCHLD, sigchld_handler); | |
7252 | #endif | |
7253 | ||
7254 | FD_ZERO (&input_wait_mask); | |
7255 | FD_ZERO (&non_keyboard_wait_mask); | |
7256 | FD_ZERO (&non_process_wait_mask); | |
3fad2ad2 | 7257 | FD_ZERO (&write_mask); |
f388c88a | 7258 | max_process_desc = 0; |
3fad2ad2 | 7259 | memset (fd_callback_info, 0, sizeof (fd_callback_info)); |
f388c88a EZ |
7260 | |
7261 | #ifdef NON_BLOCKING_CONNECT | |
7262 | FD_ZERO (&connect_wait_mask); | |
7263 | num_pending_connects = 0; | |
7264 | #endif | |
7265 | ||
7266 | #ifdef ADAPTIVE_READ_BUFFERING | |
7267 | process_output_delay_count = 0; | |
7268 | process_output_skip = 0; | |
7269 | #endif | |
7270 | ||
7271 | /* Don't do this, it caused infinite select loops. The display | |
7272 | method should call add_keyboard_wait_descriptor on stdin if it | |
7273 | needs that. */ | |
7274 | #if 0 | |
7275 | FD_SET (0, &input_wait_mask); | |
7276 | #endif | |
7277 | ||
7278 | Vprocess_alist = Qnil; | |
7279 | #ifdef SIGCHLD | |
7280 | deleted_pid_list = Qnil; | |
7281 | #endif | |
7282 | for (i = 0; i < MAXDESC; i++) | |
7283 | { | |
7284 | chan_process[i] = Qnil; | |
7285 | proc_buffered_char[i] = -1; | |
7286 | } | |
7287 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7288 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7289 | #ifdef DATAGRAM_SOCKETS | |
7290 | memset (datagram_address, 0, sizeof datagram_address); | |
7291 | #endif | |
7292 | ||
f388c88a EZ |
7293 | { |
7294 | Lisp_Object subfeatures = Qnil; | |
7295 | const struct socket_options *sopt; | |
7296 | ||
7297 | #define ADD_SUBFEATURE(key, val) \ | |
7298 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7299 | ||
7300 | #ifdef NON_BLOCKING_CONNECT | |
7301 | ADD_SUBFEATURE (QCnowait, Qt); | |
7302 | #endif | |
7303 | #ifdef DATAGRAM_SOCKETS | |
7304 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7305 | #endif | |
7306 | #ifdef HAVE_SEQPACKET | |
7307 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7308 | #endif | |
7309 | #ifdef HAVE_LOCAL_SOCKETS | |
7310 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7311 | #endif | |
7312 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7313 | #ifdef AF_INET6 | |
7314 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7315 | #endif | |
7316 | #ifdef HAVE_GETSOCKNAME | |
7317 | ADD_SUBFEATURE (QCservice, Qt); | |
7318 | #endif | |
5e617bc2 | 7319 | #if defined (O_NONBLOCK) || defined (O_NDELAY) |
f388c88a EZ |
7320 | ADD_SUBFEATURE (QCserver, Qt); |
7321 | #endif | |
7322 | ||
7323 | for (sopt = socket_options; sopt->name; sopt++) | |
7324 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7325 | ||
7326 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7327 | } | |
f388c88a EZ |
7328 | |
7329 | #if defined (DARWIN_OS) | |
7330 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7331 | processes. As such, we only change the default value. */ | |
7332 | if (initialized) | |
7333 | { | |
f44bd759 PE |
7334 | char const *release = (STRINGP (Voperating_system_release) |
7335 | ? SSDATA (Voperating_system_release) | |
7336 | : 0); | |
f388c88a EZ |
7337 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION |
7338 | && release[1] == '.')) { | |
7339 | Vprocess_connection_type = Qnil; | |
7340 | } | |
7341 | } | |
7342 | #endif | |
7343 | #endif /* subprocesses */ | |
7344 | kbd_is_on_hold = 0; | |
7345 | } | |
7346 | ||
7347 | void | |
7348 | syms_of_process (void) | |
7349 | { | |
7350 | #ifdef subprocesses | |
7351 | ||
cd3520a4 JB |
7352 | DEFSYM (Qprocessp, "processp"); |
7353 | DEFSYM (Qrun, "run"); | |
7354 | DEFSYM (Qstop, "stop"); | |
7355 | DEFSYM (Qsignal, "signal"); | |
f388c88a EZ |
7356 | |
7357 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7358 | here again. | |
934e2a68 | 7359 | |
f388c88a EZ |
7360 | Qexit = intern_c_string ("exit"); |
7361 | staticpro (&Qexit); */ | |
934e2a68 | 7362 | |
cd3520a4 JB |
7363 | DEFSYM (Qopen, "open"); |
7364 | DEFSYM (Qclosed, "closed"); | |
7365 | DEFSYM (Qconnect, "connect"); | |
7366 | DEFSYM (Qfailed, "failed"); | |
7367 | DEFSYM (Qlisten, "listen"); | |
7368 | DEFSYM (Qlocal, "local"); | |
7369 | DEFSYM (Qipv4, "ipv4"); | |
f388c88a | 7370 | #ifdef AF_INET6 |
cd3520a4 JB |
7371 | DEFSYM (Qipv6, "ipv6"); |
7372 | #endif | |
7373 | DEFSYM (Qdatagram, "datagram"); | |
7374 | DEFSYM (Qseqpacket, "seqpacket"); | |
7375 | ||
7376 | DEFSYM (QCport, ":port"); | |
7377 | DEFSYM (QCspeed, ":speed"); | |
7378 | DEFSYM (QCprocess, ":process"); | |
7379 | ||
7380 | DEFSYM (QCbytesize, ":bytesize"); | |
7381 | DEFSYM (QCstopbits, ":stopbits"); | |
7382 | DEFSYM (QCparity, ":parity"); | |
7383 | DEFSYM (Qodd, "odd"); | |
7384 | DEFSYM (Qeven, "even"); | |
7385 | DEFSYM (QCflowcontrol, ":flowcontrol"); | |
7386 | DEFSYM (Qhw, "hw"); | |
7387 | DEFSYM (Qsw, "sw"); | |
7388 | DEFSYM (QCsummary, ":summary"); | |
7389 | ||
7390 | DEFSYM (Qreal, "real"); | |
7391 | DEFSYM (Qnetwork, "network"); | |
7392 | DEFSYM (Qserial, "serial"); | |
7393 | DEFSYM (QCbuffer, ":buffer"); | |
7394 | DEFSYM (QChost, ":host"); | |
7395 | DEFSYM (QCservice, ":service"); | |
7396 | DEFSYM (QClocal, ":local"); | |
7397 | DEFSYM (QCremote, ":remote"); | |
7398 | DEFSYM (QCcoding, ":coding"); | |
7399 | DEFSYM (QCserver, ":server"); | |
7400 | DEFSYM (QCnowait, ":nowait"); | |
7401 | DEFSYM (QCsentinel, ":sentinel"); | |
7402 | DEFSYM (QClog, ":log"); | |
7403 | DEFSYM (QCnoquery, ":noquery"); | |
7404 | DEFSYM (QCstop, ":stop"); | |
7405 | DEFSYM (QCoptions, ":options"); | |
7406 | DEFSYM (QCplist, ":plist"); | |
7407 | ||
7408 | DEFSYM (Qlast_nonmenu_event, "last-nonmenu-event"); | |
934e2a68 | 7409 | |
f388c88a EZ |
7410 | staticpro (&Vprocess_alist); |
7411 | #ifdef SIGCHLD | |
7412 | staticpro (&deleted_pid_list); | |
7413 | #endif | |
934e2a68 | 7414 | |
f388c88a | 7415 | #endif /* subprocesses */ |
6720a7fb | 7416 | |
cd3520a4 JB |
7417 | DEFSYM (QCname, ":name"); |
7418 | DEFSYM (QCtype, ":type"); | |
7419 | ||
7420 | DEFSYM (Qeuid, "euid"); | |
7421 | DEFSYM (Qegid, "egid"); | |
7422 | DEFSYM (Quser, "user"); | |
7423 | DEFSYM (Qgroup, "group"); | |
7424 | DEFSYM (Qcomm, "comm"); | |
7425 | DEFSYM (Qstate, "state"); | |
7426 | DEFSYM (Qppid, "ppid"); | |
7427 | DEFSYM (Qpgrp, "pgrp"); | |
7428 | DEFSYM (Qsess, "sess"); | |
7429 | DEFSYM (Qttname, "ttname"); | |
7430 | DEFSYM (Qtpgid, "tpgid"); | |
7431 | DEFSYM (Qminflt, "minflt"); | |
7432 | DEFSYM (Qmajflt, "majflt"); | |
7433 | DEFSYM (Qcminflt, "cminflt"); | |
7434 | DEFSYM (Qcmajflt, "cmajflt"); | |
7435 | DEFSYM (Qutime, "utime"); | |
7436 | DEFSYM (Qstime, "stime"); | |
7437 | DEFSYM (Qtime, "time"); | |
7438 | DEFSYM (Qcutime, "cutime"); | |
7439 | DEFSYM (Qcstime, "cstime"); | |
7440 | DEFSYM (Qctime, "ctime"); | |
7441 | DEFSYM (Qpri, "pri"); | |
7442 | DEFSYM (Qnice, "nice"); | |
7443 | DEFSYM (Qthcount, "thcount"); | |
7444 | DEFSYM (Qstart, "start"); | |
7445 | DEFSYM (Qvsize, "vsize"); | |
7446 | DEFSYM (Qrss, "rss"); | |
7447 | DEFSYM (Qetime, "etime"); | |
7448 | DEFSYM (Qpcpu, "pcpu"); | |
7449 | DEFSYM (Qpmem, "pmem"); | |
7450 | DEFSYM (Qargs, "args"); | |
9057ff80 | 7451 | |
29208e82 | 7452 | DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes, |
f388c88a EZ |
7453 | doc: /* *Non-nil means delete processes immediately when they exit. |
7454 | A value of nil means don't delete them until `list-processes' is run. */); | |
7455 | ||
7456 | delete_exited_processes = 1; | |
7457 | ||
462aa963 | 7458 | #ifdef subprocesses |
29208e82 | 7459 | DEFVAR_LISP ("process-connection-type", Vprocess_connection_type, |
f388c88a EZ |
7460 | doc: /* Control type of device used to communicate with subprocesses. |
7461 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7462 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7463 | then a pipe is used in any case. | |
7464 | The value takes effect when `start-process' is called. */); | |
7465 | Vprocess_connection_type = Qt; | |
7466 | ||
7467 | #ifdef ADAPTIVE_READ_BUFFERING | |
29208e82 | 7468 | DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering, |
f388c88a EZ |
7469 | doc: /* If non-nil, improve receive buffering by delaying after short reads. |
7470 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7471 | is read in very small blocks, potentially resulting in very poor performance. | |
7472 | This behavior can be remedied to some extent by setting this variable to a | |
7473 | non-nil value, as it will automatically delay reading from such processes, to | |
7474 | allow them to produce more output before Emacs tries to read it. | |
7475 | If the value is t, the delay is reset after each write to the process; any other | |
7476 | non-nil value means that the delay is not reset on write. | |
7477 | The variable takes effect when `start-process' is called. */); | |
7478 | Vprocess_adaptive_read_buffering = Qt; | |
7479 | #endif | |
7480 | ||
7481 | defsubr (&Sprocessp); | |
7482 | defsubr (&Sget_process); | |
7483 | defsubr (&Sdelete_process); | |
7484 | defsubr (&Sprocess_status); | |
7485 | defsubr (&Sprocess_exit_status); | |
7486 | defsubr (&Sprocess_id); | |
7487 | defsubr (&Sprocess_name); | |
7488 | defsubr (&Sprocess_tty_name); | |
7489 | defsubr (&Sprocess_command); | |
7490 | defsubr (&Sset_process_buffer); | |
7491 | defsubr (&Sprocess_buffer); | |
7492 | defsubr (&Sprocess_mark); | |
7493 | defsubr (&Sset_process_filter); | |
7494 | defsubr (&Sprocess_filter); | |
7495 | defsubr (&Sset_process_sentinel); | |
7496 | defsubr (&Sprocess_sentinel); | |
7497 | defsubr (&Sset_process_window_size); | |
7498 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7499 | defsubr (&Sset_process_query_on_exit_flag); | |
7500 | defsubr (&Sprocess_query_on_exit_flag); | |
7501 | defsubr (&Sprocess_contact); | |
7502 | defsubr (&Sprocess_plist); | |
7503 | defsubr (&Sset_process_plist); | |
f388c88a EZ |
7504 | defsubr (&Sprocess_list); |
7505 | defsubr (&Sstart_process); | |
f388c88a EZ |
7506 | defsubr (&Sserial_process_configure); |
7507 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7508 | defsubr (&Sset_network_process_option); |
7509 | defsubr (&Smake_network_process); | |
7510 | defsubr (&Sformat_network_address); | |
5e617bc2 | 7511 | #if defined (HAVE_NET_IF_H) |
f388c88a EZ |
7512 | #ifdef SIOCGIFCONF |
7513 | defsubr (&Snetwork_interface_list); | |
7514 | #endif | |
5e617bc2 | 7515 | #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS) |
f388c88a EZ |
7516 | defsubr (&Snetwork_interface_info); |
7517 | #endif | |
5e617bc2 | 7518 | #endif /* defined (HAVE_NET_IF_H) */ |
f388c88a EZ |
7519 | #ifdef DATAGRAM_SOCKETS |
7520 | defsubr (&Sprocess_datagram_address); | |
7521 | defsubr (&Sset_process_datagram_address); | |
7522 | #endif | |
7523 | defsubr (&Saccept_process_output); | |
7524 | defsubr (&Sprocess_send_region); | |
7525 | defsubr (&Sprocess_send_string); | |
7526 | defsubr (&Sinterrupt_process); | |
7527 | defsubr (&Skill_process); | |
7528 | defsubr (&Squit_process); | |
7529 | defsubr (&Sstop_process); | |
7530 | defsubr (&Scontinue_process); | |
7531 | defsubr (&Sprocess_running_child_p); | |
7532 | defsubr (&Sprocess_send_eof); | |
7533 | defsubr (&Ssignal_process); | |
7534 | defsubr (&Swaiting_for_user_input_p); | |
7535 | defsubr (&Sprocess_type); | |
7536 | defsubr (&Sset_process_coding_system); | |
7537 | defsubr (&Sprocess_coding_system); | |
7538 | defsubr (&Sset_process_filter_multibyte); | |
7539 | defsubr (&Sprocess_filter_multibyte_p); | |
7540 | ||
7541 | #endif /* subprocesses */ | |
7542 | ||
6720a7fb | 7543 | defsubr (&Sget_buffer_process); |
52a1b894 | 7544 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7545 | defsubr (&Slist_system_processes); |
a20878b6 | 7546 | defsubr (&Sprocess_attributes); |
6720a7fb | 7547 | } |