Commit | Line | Data |
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d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
0b5538bd | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, |
63136da6 | 3 | 1996, 1998, 1999, 2001, 2002, 2003, 2004, |
114f9c96 | 4 | 2005, 2006, 2007, 2008, 2009, 2010 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> | |
27 | #include <sys/types.h> /* some typedefs are used in sys/file.h */ | |
28 | #include <sys/file.h> | |
29 | #include <sys/stat.h> | |
d7306fe6 | 30 | #include <setjmp.h> |
2026418c YM |
31 | #ifdef HAVE_INTTYPES_H |
32 | #include <inttypes.h> | |
33 | #endif | |
63136da6 AS |
34 | #ifdef STDC_HEADERS |
35 | #include <stdlib.h> | |
36 | #endif | |
934e2a68 | 37 | |
93b4f699 RS |
38 | #ifdef HAVE_UNISTD_H |
39 | #include <unistd.h> | |
40 | #endif | |
e98d950b | 41 | #include <fcntl.h> |
e98d950b | 42 | |
f388c88a EZ |
43 | /* Only MS-DOS does not define `subprocesses'. */ |
44 | #ifdef subprocesses | |
45 | ||
d0d6b7c5 JB |
46 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
47 | #include <sys/socket.h> | |
48 | #include <netdb.h> | |
49 | #include <netinet/in.h> | |
50 | #include <arpa/inet.h> | |
e690ca94 KS |
51 | |
52 | /* Are local (unix) sockets supported? */ | |
4624371d | 53 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
54 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
55 | #define AF_LOCAL AF_UNIX | |
56 | #endif | |
57 | #ifdef AF_LOCAL | |
58 | #define HAVE_LOCAL_SOCKETS | |
59 | #include <sys/un.h> | |
60 | #endif | |
61 | #endif | |
d0d6b7c5 JB |
62 | #endif /* HAVE_SOCKETS */ |
63 | ||
1d29df59 | 64 | #if defined(HAVE_SYS_IOCTL_H) |
d0d6b7c5 | 65 | #include <sys/ioctl.h> |
0ad77c54 | 66 | #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5) |
d0d6b7c5 JB |
67 | #include <fcntl.h> |
68 | #endif /* HAVE_PTYS and no O_NDELAY */ | |
1d29df59 | 69 | #endif /* HAVE_SYS_IOCTL_H */ |
d0d6b7c5 JB |
70 | |
71 | #ifdef NEED_BSDTTY | |
72 | #include <bsdtty.h> | |
73 | #endif | |
74 | ||
6b61353c KH |
75 | /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */ |
76 | #ifdef HAVE_SOCKETS | |
77 | #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H) | |
78 | /* sys/ioctl.h may have been included already */ | |
79 | #ifndef SIOCGIFADDR | |
80 | #include <sys/ioctl.h> | |
81 | #endif | |
82 | #include <net/if.h> | |
83 | #endif | |
84 | #endif | |
85 | ||
e62cab61 DL |
86 | #ifdef HAVE_SYS_WAIT |
87 | #include <sys/wait.h> | |
88 | #endif | |
d0d6b7c5 | 89 | |
08116b48 CY |
90 | #ifdef HAVE_RES_INIT |
91 | #include <netinet/in.h> | |
92 | #include <arpa/nameser.h> | |
93 | #include <resolv.h> | |
94 | #endif | |
95 | ||
f388c88a EZ |
96 | #endif /* subprocesses */ |
97 | ||
fa8459a3 | 98 | #include "lisp.h" |
d0d6b7c5 | 99 | #include "systime.h" |
36ebaafa | 100 | #include "systty.h" |
d0d6b7c5 | 101 | |
d0d6b7c5 JB |
102 | #include "window.h" |
103 | #include "buffer.h" | |
5bbf78c1 | 104 | #include "character.h" |
0fa1789e | 105 | #include "coding.h" |
d0d6b7c5 | 106 | #include "process.h" |
428a555e | 107 | #include "frame.h" |
d0d6b7c5 JB |
108 | #include "termhooks.h" |
109 | #include "termopts.h" | |
110 | #include "commands.h" | |
3ec68006 | 111 | #include "keyboard.h" |
ececcbec | 112 | #include "blockinput.h" |
dfcf069d | 113 | #include "dispextern.h" |
e0016554 | 114 | #include "composite.h" |
30904ab7 | 115 | #include "atimer.h" |
f388c88a EZ |
116 | #include "sysselect.h" |
117 | #include "syssignal.h" | |
118 | #include "syswait.h" | |
d0d6b7c5 | 119 | |
872870b2 JD |
120 | #if defined (USE_GTK) || defined (HAVE_GCONF) |
121 | #include "xgselect.h" | |
122 | #endif /* defined (USE_GTK) || defined (HAVE_GCONF) */ | |
123 | ||
fdb183d6 DN |
124 | extern int timers_run; |
125 | ||
126 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; | |
127 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
128 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
129 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
130 | Lisp_Object QCname, QCtype; | |
131 | \f | |
132 | /* Non-zero if keyboard input is on hold, zero otherwise. */ | |
133 | ||
134 | static int kbd_is_on_hold; | |
135 | ||
136 | /* Nonzero means delete a process right away if it exits. */ | |
137 | static int delete_exited_processes; | |
138 | ||
139 | /* Nonzero means don't run process sentinels. This is used | |
140 | when exiting. */ | |
141 | int inhibit_sentinels; | |
142 | ||
f388c88a EZ |
143 | #ifdef subprocesses |
144 | ||
dd2281ae | 145 | Lisp_Object Qprocessp; |
324e68ba | 146 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 147 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
f00c449b | 148 | Lisp_Object Qlocal, Qipv4, Qdatagram, Qseqpacket; |
d888760c | 149 | Lisp_Object Qreal, Qnetwork, Qserial; |
e1652a86 KS |
150 | #ifdef AF_INET6 |
151 | Lisp_Object Qipv6; | |
152 | #endif | |
d888760c GM |
153 | Lisp_Object QCport, QCspeed, QCprocess; |
154 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; | |
155 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
f388c88a | 156 | Lisp_Object QCbuffer, QChost, QCservice; |
e690ca94 | 157 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 158 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 159 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
6545aada | 160 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
161 | /* QCfamily is declared and initialized in xfaces.c, |
162 | QCfilter in keyboard.c. */ | |
163 | extern Lisp_Object QCfamily, QCfilter; | |
164 | ||
d0d6b7c5 JB |
165 | /* Qexit is declared and initialized in eval.c. */ |
166 | ||
e0f712ba AC |
167 | /* QCfamily is defined in xfaces.c. */ |
168 | extern Lisp_Object QCfamily; | |
169 | /* QCfilter is defined in keyboard.c. */ | |
170 | extern Lisp_Object QCfilter; | |
171 | ||
d0d6b7c5 | 172 | #ifdef HAVE_SOCKETS |
d888760c GM |
173 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
174 | #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork)) | |
175 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
176 | #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial)) | |
d0d6b7c5 JB |
177 | #else |
178 | #define NETCONN_P(p) 0 | |
e690ca94 | 179 | #define NETCONN1_P(p) 0 |
d888760c GM |
180 | #define SERIALCONN_P(p) 0 |
181 | #define SERIALCONN1_P(p) 0 | |
d0d6b7c5 JB |
182 | #endif /* HAVE_SOCKETS */ |
183 | ||
184 | /* Define first descriptor number available for subprocesses. */ | |
d0d6b7c5 | 185 | #define FIRST_PROC_DESC 3 |
d0d6b7c5 JB |
186 | |
187 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
188 | testing SIGCHLD. */ | |
189 | ||
190 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
191 | #define SIGCHLD SIGCLD | |
192 | #endif /* SIGCLD */ | |
193 | ||
d2aa42f8 | 194 | extern char *get_operating_system_release (void); |
41d03b9a | 195 | |
d888760c GM |
196 | /* Serial processes require termios or Windows. */ |
197 | #if defined (HAVE_TERMIOS) || defined (WINDOWSNT) | |
198 | #define HAVE_SERIAL | |
199 | #endif | |
200 | ||
201 | #ifdef HAVE_SERIAL | |
202 | /* From sysdep.c or w32.c */ | |
203 | extern int serial_open (char *port); | |
204 | extern void serial_configure (struct Lisp_Process *p, Lisp_Object contact); | |
205 | #endif | |
206 | ||
5f0929a7 RS |
207 | #ifndef HAVE_H_ERRNO |
208 | extern int h_errno; | |
209 | #endif | |
210 | ||
d0d6b7c5 JB |
211 | /* t means use pty, nil means use a pipe, |
212 | maybe other values to come. */ | |
dd2281ae | 213 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 | 214 | |
17d02632 KH |
215 | /* These next two vars are non-static since sysdep.c uses them in the |
216 | emulation of `select'. */ | |
d0d6b7c5 | 217 | /* Number of events of change of status of a process. */ |
17d02632 | 218 | int process_tick; |
d0d6b7c5 | 219 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 220 | int update_tick; |
d0d6b7c5 | 221 | |
dd2a17ab KS |
222 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
223 | ||
224 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
225 | #undef NON_BLOCKING_CONNECT | |
226 | #else | |
227 | #ifndef NON_BLOCKING_CONNECT | |
228 | #ifdef HAVE_SOCKETS | |
229 | #ifdef HAVE_SELECT | |
230 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
231 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
232 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
233 | #define NON_BLOCKING_CONNECT | |
234 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
235 | #endif /* O_NONBLOCK || O_NDELAY */ | |
236 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
237 | #endif /* HAVE_SELECT */ | |
238 | #endif /* HAVE_SOCKETS */ | |
239 | #endif /* NON_BLOCKING_CONNECT */ | |
240 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
241 | ||
e690ca94 KS |
242 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
243 | this system. We need to read full packets, so we need a | |
244 | "non-destructive" select. So we require either native select, | |
245 | or emulation of select using FIONREAD. */ | |
246 | ||
e690ca94 KS |
247 | #ifdef BROKEN_DATAGRAM_SOCKETS |
248 | #undef DATAGRAM_SOCKETS | |
249 | #else | |
250 | #ifndef DATAGRAM_SOCKETS | |
251 | #ifdef HAVE_SOCKETS | |
252 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
253 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
254 | #define DATAGRAM_SOCKETS | |
255 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
256 | #endif /* HAVE_SELECT || FIONREAD */ | |
257 | #endif /* HAVE_SOCKETS */ | |
258 | #endif /* DATAGRAM_SOCKETS */ | |
259 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
260 | ||
f00c449b SM |
261 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
262 | # define HAVE_SEQPACKET | |
263 | #endif | |
264 | ||
6b61353c KH |
265 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
266 | #ifdef EMACS_HAS_USECS | |
267 | #define ADAPTIVE_READ_BUFFERING | |
268 | #endif | |
269 | #endif | |
270 | ||
271 | #ifdef ADAPTIVE_READ_BUFFERING | |
272 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
273 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
274 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
275 | ||
db853b7a KS |
276 | /* Number of processes which have a non-zero read_output_delay, |
277 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
278 | |
279 | static int process_output_delay_count; | |
280 | ||
db853b7a | 281 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
282 | |
283 | static int process_output_skip; | |
284 | ||
285 | /* Non-nil means to delay reading process output to improve buffering. | |
286 | A value of t means that delay is reset after each send, any other | |
db853b7a KS |
287 | non-nil value does not reset the delay. A value of nil disables |
288 | adaptive read buffering completely. */ | |
6b61353c KH |
289 | static Lisp_Object Vprocess_adaptive_read_buffering; |
290 | #else | |
291 | #define process_output_delay_count 0 | |
292 | #endif | |
293 | ||
f57e2426 J |
294 | static int keyboard_bit_set (SELECT_TYPE *); |
295 | static void deactivate_process (Lisp_Object); | |
296 | static void status_notify (struct Lisp_Process *); | |
297 | static int read_process_output (Lisp_Object, int); | |
298 | static void create_pty (Lisp_Object); | |
41d03b9a | 299 | |
583dcae4 | 300 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 301 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 302 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
303 | #define POLL_FOR_INPUT |
304 | #endif | |
305 | ||
d3da34e0 JB |
306 | static Lisp_Object get_process (register Lisp_Object name); |
307 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 308 | |
f388c88a EZ |
309 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
310 | ||
311 | static SELECT_TYPE input_wait_mask; | |
312 | ||
994d9841 | 313 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
314 | |
315 | static SELECT_TYPE non_keyboard_wait_mask; | |
316 | ||
994d9841 | 317 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
318 | |
319 | static SELECT_TYPE non_process_wait_mask; | |
320 | ||
994d9841 NR |
321 | /* Mask for the gpm mouse input descriptor. */ |
322 | ||
323 | static SELECT_TYPE gpm_wait_mask; | |
324 | ||
bad49fc7 | 325 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
326 | /* Mask of bits indicating the descriptors that we wait for connect to |
327 | complete on. Once they complete, they are removed from this mask | |
328 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
329 | ||
330 | static SELECT_TYPE connect_wait_mask; | |
331 | ||
332 | /* Number of bits set in connect_wait_mask. */ | |
333 | static int num_pending_connects; | |
334 | ||
bad49fc7 | 335 | #define IF_NON_BLOCKING_CONNECT(s) s |
f388c88a | 336 | #else /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 337 | #define IF_NON_BLOCKING_CONNECT(s) |
f388c88a | 338 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 339 | |
7d0e672e RS |
340 | /* The largest descriptor currently in use for a process object. */ |
341 | static int max_process_desc; | |
342 | ||
a69281ff RS |
343 | /* The largest descriptor currently in use for keyboard input. */ |
344 | static int max_keyboard_desc; | |
d0d6b7c5 | 345 | |
994d9841 NR |
346 | /* The largest descriptor currently in use for gpm mouse input. */ |
347 | static int max_gpm_desc; | |
348 | ||
d0d6b7c5 | 349 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
41f3aa98 | 350 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
351 | |
352 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 353 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
354 | |
355 | /* Buffered-ahead input char from process, indexed by channel. | |
356 | -1 means empty (no char is buffered). | |
357 | Used on sys V where the only way to tell if there is any | |
358 | output from the process is to read at least one char. | |
359 | Always -1 on systems that support FIONREAD. */ | |
360 | ||
e98d950b RS |
361 | /* Don't make static; need to access externally. */ |
362 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 363 | |
0fa1789e | 364 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
365 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
366 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 367 | |
e690ca94 KS |
368 | #ifdef DATAGRAM_SOCKETS |
369 | /* Table of `partner address' for datagram sockets. */ | |
370 | struct sockaddr_and_len { | |
371 | struct sockaddr *sa; | |
372 | int len; | |
373 | } datagram_address[MAXDESC]; | |
374 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 375 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
376 | #else |
377 | #define DATAGRAM_CHAN_P(chan) (0) | |
378 | #define DATAGRAM_CONN_P(proc) (0) | |
379 | #endif | |
380 | ||
93b4f699 RS |
381 | /* Maximum number of bytes to send to a pty without an eof. */ |
382 | static int pty_max_bytes; | |
3b9a3dfa | 383 | |
875e6b94 | 384 | #ifdef HAVE_PTYS |
e62cab61 DL |
385 | #ifdef HAVE_PTY_H |
386 | #include <pty.h> | |
387 | #endif | |
875e6b94 | 388 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
389 | |
390 | static char pty_name[24]; | |
875e6b94 | 391 | #endif |
d0d6b7c5 JB |
392 | \f |
393 | /* Compute the Lisp form of the process status, p->status, from | |
394 | the numeric status that was returned by `wait'. */ | |
395 | ||
bba104c1 | 396 | static Lisp_Object status_convert (int); |
f9738840 | 397 | |
ff6daed3 | 398 | static void |
d3da34e0 | 399 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 400 | { |
6bfd98e7 | 401 | eassert (p->raw_status_new); |
bba104c1 | 402 | p->status = status_convert (p->raw_status); |
6bfd98e7 | 403 | p->raw_status_new = 0; |
d0d6b7c5 JB |
404 | } |
405 | ||
177c0ea7 | 406 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
407 | the list that we use internally. */ |
408 | ||
ff6daed3 | 409 | static Lisp_Object |
bba104c1 | 410 | status_convert (int w) |
d0d6b7c5 JB |
411 | { |
412 | if (WIFSTOPPED (w)) | |
413 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
414 | else if (WIFEXITED (w)) | |
415 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
416 | WCOREDUMP (w) ? Qt : Qnil)); | |
417 | else if (WIFSIGNALED (w)) | |
418 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
419 | WCOREDUMP (w) ? Qt : Qnil)); | |
420 | else | |
421 | return Qrun; | |
422 | } | |
423 | ||
424 | /* Given a status-list, extract the three pieces of information | |
425 | and store them individually through the three pointers. */ | |
426 | ||
ff6daed3 | 427 | static void |
d3da34e0 | 428 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, int *coredump) |
d0d6b7c5 JB |
429 | { |
430 | Lisp_Object tem; | |
431 | ||
bcd69aea | 432 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
433 | { |
434 | *symbol = l; | |
435 | *code = 0; | |
436 | *coredump = 0; | |
437 | } | |
438 | else | |
439 | { | |
70949dac KR |
440 | *symbol = XCAR (l); |
441 | tem = XCDR (l); | |
442 | *code = XFASTINT (XCAR (tem)); | |
443 | tem = XCDR (tem); | |
d0d6b7c5 JB |
444 | *coredump = !NILP (tem); |
445 | } | |
446 | } | |
447 | ||
448 | /* Return a string describing a process status list. */ | |
449 | ||
116c423c | 450 | static Lisp_Object |
d3da34e0 | 451 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 452 | { |
116c423c | 453 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
454 | Lisp_Object symbol; |
455 | int code, coredump; | |
456 | Lisp_Object string, string2; | |
457 | ||
458 | decode_status (status, &symbol, &code, &coredump); | |
459 | ||
460 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
461 | { | |
68c45bf0 | 462 | char *signame; |
ca9c0567 | 463 | synchronize_system_messages_locale (); |
68c45bf0 | 464 | signame = strsignal (code); |
b97ad9ea | 465 | if (signame == 0) |
66bd43d1 KH |
466 | string = build_string ("unknown"); |
467 | else | |
468 | { | |
469 | int c1, c2; | |
470 | ||
471 | string = make_unibyte_string (signame, strlen (signame)); | |
472 | if (! NILP (Vlocale_coding_system)) | |
473 | string = (code_convert_string_norecord | |
474 | (string, Vlocale_coding_system, 0)); | |
62a6e103 | 475 | c1 = STRING_CHAR ((char *) SDATA (string)); |
66bd43d1 KH |
476 | c2 = DOWNCASE (c1); |
477 | if (c1 != c2) | |
4735b74e | 478 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 479 | } |
d0d6b7c5 | 480 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
481 | return concat2 (string, string2); |
482 | } | |
483 | else if (EQ (symbol, Qexit)) | |
484 | { | |
116c423c KS |
485 | if (NETCONN1_P (p)) |
486 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
487 | if (code == 0) |
488 | return build_string ("finished\n"); | |
f2980264 | 489 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 490 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
491 | return concat3 (build_string ("exited abnormally with code "), |
492 | string, string2); | |
d0d6b7c5 | 493 | } |
dd2a17ab KS |
494 | else if (EQ (symbol, Qfailed)) |
495 | { | |
496 | string = Fnumber_to_string (make_number (code)); | |
497 | string2 = build_string ("\n"); | |
e690ca94 KS |
498 | return concat3 (build_string ("failed with code "), |
499 | string, string2); | |
dd2a17ab | 500 | } |
d0d6b7c5 JB |
501 | else |
502 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
503 | } | |
504 | \f | |
505 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 506 | |
875e6b94 KH |
507 | /* Open an available pty, returning a file descriptor. |
508 | Return -1 on failure. | |
509 | The file name of the terminal corresponding to the pty | |
510 | is left in the variable pty_name. */ | |
511 | ||
ff6daed3 | 512 | static int |
d3da34e0 | 513 | allocate_pty (void) |
d0d6b7c5 | 514 | { |
dfcf069d | 515 | register int c, i; |
d0d6b7c5 JB |
516 | int fd; |
517 | ||
518 | #ifdef PTY_ITERATION | |
519 | PTY_ITERATION | |
520 | #else | |
521 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
522 | for (i = 0; i < 16; i++) | |
523 | #endif | |
524 | { | |
26d7389d | 525 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
526 | #ifdef PTY_NAME_SPRINTF |
527 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
528 | #else |
529 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
530 | #endif /* no PTY_NAME_SPRINTF */ |
531 | ||
4d7c105e RS |
532 | #ifdef PTY_OPEN |
533 | PTY_OPEN; | |
534 | #else /* no PTY_OPEN */ | |
34967d0f | 535 | { |
34967d0f SM |
536 | { /* Some systems name their pseudoterminals so that there are gaps in |
537 | the usual sequence - for example, on HP9000/S700 systems, there | |
538 | are no pseudoterminals with names ending in 'f'. So we wait for | |
539 | three failures in a row before deciding that we've reached the | |
540 | end of the ptys. */ | |
541 | int failed_count = 0; | |
f3d9532b | 542 | |
34967d0f SM |
543 | if (stat (pty_name, &stb) < 0) |
544 | { | |
545 | failed_count++; | |
546 | if (failed_count >= 3) | |
547 | return -1; | |
548 | } | |
549 | else | |
550 | failed_count = 0; | |
32676c08 | 551 | } |
34967d0f SM |
552 | # ifdef O_NONBLOCK |
553 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
554 | # else | |
555 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
556 | # endif | |
34967d0f | 557 | } |
4d7c105e | 558 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
559 | |
560 | if (fd >= 0) | |
561 | { | |
562 | /* check to make certain that both sides are available | |
563 | this avoids a nasty yet stupid bug in rlogins */ | |
564 | #ifdef PTY_TTY_NAME_SPRINTF | |
565 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 566 | #else |
63136da6 | 567 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 568 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
569 | if (access (pty_name, 6) != 0) |
570 | { | |
68c45bf0 | 571 | emacs_close (fd); |
132d0475 | 572 | # ifndef __sgi |
d0d6b7c5 | 573 | continue; |
34967d0f | 574 | # else |
d0d6b7c5 | 575 | return -1; |
132d0475 | 576 | # endif /* __sgi */ |
d0d6b7c5 | 577 | } |
d0d6b7c5 JB |
578 | setup_pty (fd); |
579 | return fd; | |
580 | } | |
581 | } | |
582 | return -1; | |
583 | } | |
584 | #endif /* HAVE_PTYS */ | |
585 | \f | |
ff6daed3 | 586 | static Lisp_Object |
d3da34e0 | 587 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
588 | { |
589 | register Lisp_Object val, tem, name1; | |
590 | register struct Lisp_Process *p; | |
591 | char suffix[10]; | |
592 | register int i; | |
593 | ||
98423852 | 594 | p = allocate_process (); |
23d6bb9c | 595 | |
60f0fb11 SM |
596 | p->infd = -1; |
597 | p->outfd = -1; | |
598 | p->tick = 0; | |
599 | p->update_tick = 0; | |
6bfd98e7 | 600 | p->pid = 0; |
fd41ad98 | 601 | p->pty_flag = 0; |
6bfd98e7 | 602 | p->raw_status_new = 0; |
d0d6b7c5 JB |
603 | p->status = Qrun; |
604 | p->mark = Fmake_marker (); | |
847c048e | 605 | p->kill_without_query = 0; |
d0d6b7c5 | 606 | |
6b61353c | 607 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
608 | p->adaptive_read_buffering = 0; |
609 | p->read_output_delay = 0; | |
610 | p->read_output_skip = 0; | |
6b61353c KH |
611 | #endif |
612 | ||
d0d6b7c5 JB |
613 | /* If name is already in use, modify it until it is unused. */ |
614 | ||
615 | name1 = name; | |
616 | for (i = 1; ; i++) | |
617 | { | |
618 | tem = Fget_process (name1); | |
619 | if (NILP (tem)) break; | |
620 | sprintf (suffix, "<%d>", i); | |
621 | name1 = concat2 (name, build_string (suffix)); | |
622 | } | |
623 | name = name1; | |
624 | p->name = name; | |
23d6bb9c | 625 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
626 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
627 | return val; | |
628 | } | |
629 | ||
ff6daed3 | 630 | static void |
d3da34e0 | 631 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
632 | { |
633 | register Lisp_Object pair; | |
634 | ||
635 | pair = Frassq (proc, Vprocess_alist); | |
636 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
637 | |
638 | deactivate_process (proc); | |
639 | } | |
03f04413 | 640 | |
d0d6b7c5 JB |
641 | \f |
642 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 643 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 644 | (Lisp_Object object) |
d0d6b7c5 | 645 | { |
4ee3e309 | 646 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
647 | } |
648 | ||
649 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 650 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 651 | (register Lisp_Object name) |
d0d6b7c5 | 652 | { |
bcd69aea | 653 | if (PROCESSP (name)) |
d0d6b7c5 | 654 | return name; |
b7826503 | 655 | CHECK_STRING (name); |
d0d6b7c5 JB |
656 | return Fcdr (Fassoc (name, Vprocess_alist)); |
657 | } | |
658 | ||
ebb9e16f JB |
659 | /* This is how commands for the user decode process arguments. It |
660 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
661 | Buffers denote the first process in the buffer, and nil denotes the | |
662 | current buffer. */ | |
d0d6b7c5 | 663 | |
77b221b1 | 664 | static Lisp_Object |
d3da34e0 | 665 | get_process (register Lisp_Object name) |
d0d6b7c5 | 666 | { |
1619761d KH |
667 | register Lisp_Object proc, obj; |
668 | if (STRINGP (name)) | |
669 | { | |
670 | obj = Fget_process (name); | |
671 | if (NILP (obj)) | |
672 | obj = Fget_buffer (name); | |
673 | if (NILP (obj)) | |
d5db4077 | 674 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
675 | } |
676 | else if (NILP (name)) | |
677 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 678 | else |
1619761d KH |
679 | obj = name; |
680 | ||
681 | /* Now obj should be either a buffer object or a process object. | |
682 | */ | |
683 | if (BUFFERP (obj)) | |
d0d6b7c5 | 684 | { |
1619761d | 685 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 686 | if (NILP (proc)) |
d5db4077 | 687 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 688 | } |
d0d6b7c5 | 689 | else |
1619761d | 690 | { |
b7826503 | 691 | CHECK_PROCESS (obj); |
1619761d KH |
692 | proc = obj; |
693 | } | |
694 | return proc; | |
d0d6b7c5 JB |
695 | } |
696 | ||
a5cfdda8 KS |
697 | |
698 | #ifdef SIGCHLD | |
699 | /* Fdelete_process promises to immediately forget about the process, but in | |
700 | reality, Emacs needs to remember those processes until they have been | |
701 | treated by sigchld_handler; otherwise this handler would consider the | |
702 | process as being synchronous and say that the synchronous process is | |
703 | dead. */ | |
704 | static Lisp_Object deleted_pid_list; | |
705 | #endif | |
706 | ||
d0d6b7c5 | 707 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
708 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
709 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
710 | nil, indicating the current buffer's process. */) | |
5842a27b | 711 | (register Lisp_Object process) |
d0d6b7c5 | 712 | { |
ff6daed3 KS |
713 | register struct Lisp_Process *p; |
714 | ||
4ee3e309 | 715 | process = get_process (process); |
ff6daed3 KS |
716 | p = XPROCESS (process); |
717 | ||
6bfd98e7 | 718 | p->raw_status_new = 0; |
d888760c | 719 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 720 | { |
ff6daed3 | 721 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
60f0fb11 | 722 | p->tick = ++process_tick; |
ff6daed3 | 723 | status_notify (p); |
e42bdf01 | 724 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 725 | } |
60f0fb11 | 726 | else if (p->infd >= 0) |
d0d6b7c5 | 727 | { |
a5cfdda8 KS |
728 | #ifdef SIGCHLD |
729 | Lisp_Object symbol; | |
d30fe779 EZ |
730 | /* Assignment to EMACS_INT stops GCC whining about limited range |
731 | of data type. */ | |
29ed4d51 | 732 | EMACS_INT pid = p->pid; |
a5cfdda8 KS |
733 | |
734 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 735 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
736 | /* GC treated elements set to nil. */ |
737 | Fdelq (Qnil, deleted_pid_list)); | |
738 | /* If the process has already signaled, remove it from the list. */ | |
739 | if (p->raw_status_new) | |
740 | update_status (p); | |
741 | symbol = p->status; | |
742 | if (CONSP (p->status)) | |
743 | symbol = XCAR (p->status); | |
744 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
29ed4d51 CY |
745 | deleted_pid_list |
746 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
747 | else |
748 | #endif | |
749 | { | |
750 | Fkill_process (process, Qnil); | |
751 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ | |
752 | p->status | |
753 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); | |
60f0fb11 | 754 | p->tick = ++process_tick; |
a5cfdda8 | 755 | status_notify (p); |
e42bdf01 | 756 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 757 | } |
d0d6b7c5 | 758 | } |
4ee3e309 | 759 | remove_process (process); |
d0d6b7c5 JB |
760 | return Qnil; |
761 | } | |
762 | \f | |
763 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
764 | doc: /* Return the status of PROCESS. |
765 | The returned value is one of the following symbols: | |
766 | run -- for a process that is running. | |
767 | stop -- for a process stopped but continuable. | |
768 | exit -- for a process that has exited. | |
769 | signal -- for a process that has got a fatal signal. | |
770 | open -- for a network stream connection that is open. | |
e690ca94 | 771 | listen -- for a network stream server that is listening. |
fdb82f93 | 772 | closed -- for a network stream connection that is closed. |
e4984112 KS |
773 | connect -- when waiting for a non-blocking connection to complete. |
774 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
775 | nil -- if arg is a process name and no such process exists. |
776 | PROCESS may be a process, a buffer, the name of a process, or | |
777 | nil, indicating the current buffer's process. */) | |
5842a27b | 778 | (register Lisp_Object process) |
d0d6b7c5 JB |
779 | { |
780 | register struct Lisp_Process *p; | |
781 | register Lisp_Object status; | |
343f4114 | 782 | |
4ee3e309 EN |
783 | if (STRINGP (process)) |
784 | process = Fget_process (process); | |
343f4114 | 785 | else |
4ee3e309 | 786 | process = get_process (process); |
343f4114 | 787 | |
4ee3e309 EN |
788 | if (NILP (process)) |
789 | return process; | |
343f4114 | 790 | |
4ee3e309 | 791 | p = XPROCESS (process); |
6bfd98e7 | 792 | if (p->raw_status_new) |
d0d6b7c5 JB |
793 | update_status (p); |
794 | status = p->status; | |
bcd69aea | 795 | if (CONSP (status)) |
70949dac | 796 | status = XCAR (status); |
d888760c | 797 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 798 | { |
e690ca94 | 799 | if (EQ (status, Qexit)) |
d0d6b7c5 | 800 | status = Qclosed; |
e690ca94 KS |
801 | else if (EQ (p->command, Qt)) |
802 | status = Qstop; | |
803 | else if (EQ (status, Qrun)) | |
804 | status = Qopen; | |
d0d6b7c5 JB |
805 | } |
806 | return status; | |
807 | } | |
808 | ||
809 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
810 | 1, 1, 0, | |
fdb82f93 PJ |
811 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
812 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 813 | (register Lisp_Object process) |
d0d6b7c5 | 814 | { |
b7826503 | 815 | CHECK_PROCESS (process); |
6bfd98e7 | 816 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 EN |
817 | update_status (XPROCESS (process)); |
818 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 819 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
820 | return make_number (0); |
821 | } | |
822 | ||
823 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 824 | doc: /* Return the process id of PROCESS. |
f3d9532b | 825 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 826 | For a network connection, this value is nil. */) |
5842a27b | 827 | (register Lisp_Object process) |
d0d6b7c5 | 828 | { |
d30fe779 EZ |
829 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
830 | data type. */ | |
831 | EMACS_INT pid; | |
832 | ||
b7826503 | 833 | CHECK_PROCESS (process); |
d30fe779 EZ |
834 | pid = XPROCESS (process)->pid; |
835 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
836 | } |
837 | ||
838 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
839 | doc: /* Return the name of PROCESS, as a string. |
840 | This is the name of the program invoked in PROCESS, | |
841 | possibly modified to make it unique among process names. */) | |
5842a27b | 842 | (register Lisp_Object process) |
d0d6b7c5 | 843 | { |
b7826503 | 844 | CHECK_PROCESS (process); |
4ee3e309 | 845 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
846 | } |
847 | ||
848 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
849 | doc: /* Return the command that was executed to start PROCESS. |
850 | This is a list of strings, the first string being the program executed | |
851 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
852 | For a network or serial process, this is nil (process is running) or t |
853 | \(process is stopped). */) | |
5842a27b | 854 | (register Lisp_Object process) |
d0d6b7c5 | 855 | { |
b7826503 | 856 | CHECK_PROCESS (process); |
4ee3e309 | 857 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
858 | } |
859 | ||
3b9a3dfa | 860 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
861 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
862 | This is the terminal that the process itself reads and writes on, | |
863 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 864 | (register Lisp_Object process) |
3b9a3dfa | 865 | { |
b7826503 | 866 | CHECK_PROCESS (process); |
4ee3e309 | 867 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
868 | } |
869 | ||
d0d6b7c5 | 870 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
871 | 2, 2, 0, |
872 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
5842a27b | 873 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 874 | { |
e690ca94 KS |
875 | struct Lisp_Process *p; |
876 | ||
b7826503 | 877 | CHECK_PROCESS (process); |
d0d6b7c5 | 878 | if (!NILP (buffer)) |
b7826503 | 879 | CHECK_BUFFER (buffer); |
e690ca94 KS |
880 | p = XPROCESS (process); |
881 | p->buffer = buffer; | |
d888760c | 882 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 883 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); |
03f04413 | 884 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
885 | return buffer; |
886 | } | |
887 | ||
888 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
889 | 1, 1, 0, |
890 | doc: /* Return the buffer PROCESS is associated with. | |
891 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 892 | (register Lisp_Object process) |
d0d6b7c5 | 893 | { |
b7826503 | 894 | CHECK_PROCESS (process); |
4ee3e309 | 895 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
896 | } |
897 | ||
898 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
899 | 1, 1, 0, |
900 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 901 | (register Lisp_Object process) |
d0d6b7c5 | 902 | { |
b7826503 | 903 | CHECK_PROCESS (process); |
4ee3e309 | 904 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
905 | } |
906 | ||
907 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
908 | 2, 2, 0, |
909 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 910 | A value of t means stop accepting output from the process. |
3452df9e KS |
911 | |
912 | When a process has a filter, its buffer is not used for output. | |
913 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 914 | passed to the filter. |
3452df9e | 915 | |
fdb82f93 | 916 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
917 | The string argument is normally a multibyte string, except: |
918 | - if the process' input coding system is no-conversion or raw-text, | |
919 | it is a unibyte string (the non-converted input), or else | |
920 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
921 | string (the result of converting the decoded input multibyte | |
922 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 923 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 924 | { |
471f86b9 | 925 | struct Lisp_Process *p; |
177c0ea7 | 926 | |
b7826503 | 927 | CHECK_PROCESS (process); |
471f86b9 GM |
928 | p = XPROCESS (process); |
929 | ||
930 | /* Don't signal an error if the process' input file descriptor | |
931 | is closed. This could make debugging Lisp more difficult, | |
932 | for example when doing something like | |
933 | ||
934 | (setq process (start-process ...)) | |
935 | (debug) | |
936 | (set-process-filter process ...) */ | |
177c0ea7 | 937 | |
60f0fb11 | 938 | if (p->infd >= 0) |
a69281ff | 939 | { |
e690ca94 | 940 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 941 | { |
60f0fb11 SM |
942 | FD_CLR (p->infd, &input_wait_mask); |
943 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 944 | } |
e690ca94 | 945 | else if (EQ (p->filter, Qt) |
d888760c GM |
946 | /* Network or serial process not stopped: */ |
947 | && !EQ (p->command, Qt)) | |
471f86b9 | 948 | { |
60f0fb11 SM |
949 | FD_SET (p->infd, &input_wait_mask); |
950 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 951 | } |
a69281ff | 952 | } |
177c0ea7 | 953 | |
471f86b9 | 954 | p->filter = filter; |
d888760c | 955 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 956 | p->childp = Fplist_put (p->childp, QCfilter, filter); |
03f04413 | 957 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
958 | return filter; |
959 | } | |
960 | ||
961 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
962 | 1, 1, 0, |
963 | doc: /* Returns the filter function of PROCESS; nil if none. | |
964 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 965 | (register Lisp_Object process) |
d0d6b7c5 | 966 | { |
b7826503 | 967 | CHECK_PROCESS (process); |
4ee3e309 | 968 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
969 | } |
970 | ||
971 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
972 | 2, 2, 0, |
973 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
974 | The sentinel is called as a function when the process changes state. | |
975 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 976 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 977 | { |
6b61353c KH |
978 | struct Lisp_Process *p; |
979 | ||
b7826503 | 980 | CHECK_PROCESS (process); |
6b61353c KH |
981 | p = XPROCESS (process); |
982 | ||
983 | p->sentinel = sentinel; | |
d888760c | 984 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6b61353c | 985 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); |
d0d6b7c5 JB |
986 | return sentinel; |
987 | } | |
988 | ||
989 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
990 | 1, 1, 0, |
991 | doc: /* Return the sentinel of PROCESS; nil if none. | |
992 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 993 | (register Lisp_Object process) |
d0d6b7c5 | 994 | { |
b7826503 | 995 | CHECK_PROCESS (process); |
4ee3e309 | 996 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
997 | } |
998 | ||
396df322 | 999 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1000 | Sset_process_window_size, 3, 3, 0, |
1001 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 1002 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 1003 | { |
b7826503 PJ |
1004 | CHECK_PROCESS (process); |
1005 | CHECK_NATNUM (height); | |
1006 | CHECK_NATNUM (width); | |
177c0ea7 | 1007 | |
60f0fb11 SM |
1008 | if (XPROCESS (process)->infd < 0 |
1009 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 1010 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
1011 | return Qnil; |
1012 | else | |
1013 | return Qt; | |
1014 | } | |
1015 | ||
52a1b894 | 1016 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1017 | Fset_process_inherit_coding_system_flag, |
1018 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1019 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1020 | If the second argument FLAG is non-nil, then the variable | |
1021 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1022 | will be bound to the value of the coding system used to decode | |
1023 | the process output. | |
1024 | ||
1025 | This is useful when the coding system specified for the process buffer | |
1026 | leaves either the character code conversion or the end-of-line conversion | |
1027 | unspecified, or if the coding system used to decode the process output | |
1028 | is more appropriate for saving the process buffer. | |
1029 | ||
1030 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1031 | starting the process is an alternative way of setting the inherit flag | |
1032 | for the process which will run. */) | |
5842a27b | 1033 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1034 | { |
b7826503 | 1035 | CHECK_PROCESS (process); |
60f0fb11 | 1036 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1037 | return flag; |
1038 | } | |
1039 | ||
e690ca94 KS |
1040 | DEFUN ("set-process-query-on-exit-flag", |
1041 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1042 | 2, 2, 0, | |
1043 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1044 | If the second argument FLAG is non-nil, Emacs will query the user before |
10be7e0d | 1045 | exiting or killing a buffer if PROCESS is running. */) |
5842a27b | 1046 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1047 | { |
b7826503 | 1048 | CHECK_PROCESS (process); |
60f0fb11 | 1049 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1050 | return flag; |
d0d6b7c5 | 1051 | } |
312c9964 | 1052 | |
e690ca94 KS |
1053 | DEFUN ("process-query-on-exit-flag", |
1054 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1055 | 1, 1, 0, |
f3d9532b | 1056 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1057 | (register Lisp_Object process) |
de282a05 | 1058 | { |
b7826503 | 1059 | CHECK_PROCESS (process); |
60f0fb11 | 1060 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1061 | } |
1062 | ||
1063 | #ifdef DATAGRAM_SOCKETS | |
d3da34e0 | 1064 | Lisp_Object Fprocess_datagram_address (Lisp_Object process); |
e690ca94 KS |
1065 | #endif |
1066 | ||
1067 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1068 | 1, 2, 0, | |
1069 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1070 | For a network or serial connection, the value depends on the optional |
1071 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1072 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1073 | connection. If KEY is t, the complete contact information for the | |
1074 | connection is returned, else the specific value for the keyword KEY is | |
1075 | returned. See `make-network-process' or `make-serial-process' for a | |
1076 | list of keywords. */) | |
5842a27b | 1077 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1078 | { |
1079 | Lisp_Object contact; | |
1080 | ||
1081 | CHECK_PROCESS (process); | |
1082 | contact = XPROCESS (process)->childp; | |
1083 | ||
1084 | #ifdef DATAGRAM_SOCKETS | |
1085 | if (DATAGRAM_CONN_P (process) | |
1086 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1087 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1088 | Fprocess_datagram_address (process)); |
1089 | #endif | |
1090 | ||
d888760c | 1091 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1092 | return contact; |
d888760c | 1093 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1094 | return Fcons (Fplist_get (contact, QChost), |
1095 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1096 | if (NILP (key) && SERIALCONN_P (process)) |
1097 | return Fcons (Fplist_get (contact, QCport), | |
1098 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1099 | return Fplist_get (contact, key); |
de282a05 RS |
1100 | } |
1101 | ||
faa7db08 KS |
1102 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1103 | 1, 1, 0, | |
1104 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1105 | (register Lisp_Object process) |
365aee82 | 1106 | { |
ac4a7584 | 1107 | CHECK_PROCESS (process); |
faa7db08 | 1108 | return XPROCESS (process)->plist; |
ac4a7584 | 1109 | } |
365aee82 | 1110 | |
faa7db08 KS |
1111 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1112 | 2, 2, 0, | |
26a086c6 | 1113 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1114 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1115 | { |
365aee82 | 1116 | CHECK_PROCESS (process); |
faa7db08 | 1117 | CHECK_LIST (plist); |
365aee82 | 1118 | |
faa7db08 | 1119 | XPROCESS (process)->plist = plist; |
26a086c6 | 1120 | return plist; |
365aee82 KS |
1121 | } |
1122 | ||
312c9964 RS |
1123 | #if 0 /* Turned off because we don't currently record this info |
1124 | in the process. Perhaps add it. */ | |
1125 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1126 | doc: /* Return the connection type of PROCESS. |
1127 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1128 | a socket connection. */) | |
5842a27b | 1129 | (Lisp_Object process) |
312c9964 RS |
1130 | { |
1131 | return XPROCESS (process)->type; | |
1132 | } | |
1133 | #endif | |
2a7bb882 | 1134 | |
d888760c GM |
1135 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1136 | doc: /* Return the connection type of PROCESS. | |
1137 | The value is either the symbol `real', `network', or `serial'. | |
1138 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1139 | nil, indicating the current buffer's process. */) | |
5842a27b | 1140 | (Lisp_Object process) |
d888760c GM |
1141 | { |
1142 | Lisp_Object proc; | |
1143 | proc = get_process (process); | |
1144 | return XPROCESS (proc)->type; | |
1145 | } | |
991234f0 KS |
1146 | |
1147 | #ifdef HAVE_SOCKETS | |
1148 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1149 | 1, 2, 0, |
991234f0 | 1150 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1151 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1152 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1153 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1154 | number in the string, even when present in ADDRESS. |
1155 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1156 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1157 | { |
991234f0 KS |
1158 | if (NILP (address)) |
1159 | return Qnil; | |
1160 | ||
1161 | if (STRINGP (address)) /* AF_LOCAL */ | |
1162 | return address; | |
1163 | ||
e1652a86 | 1164 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1165 | { |
1166 | register struct Lisp_Vector *p = XVECTOR (address); | |
ded83665 | 1167 | Lisp_Object args[10]; |
0dccee41 | 1168 | int nargs, i; |
991234f0 | 1169 | |
e1652a86 | 1170 | if (p->size == 4 || (p->size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1171 | { |
1172 | args[0] = build_string ("%d.%d.%d.%d"); | |
1173 | nargs = 4; | |
1174 | } | |
1175 | else if (p->size == 5) | |
1176 | { | |
1177 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1178 | nargs = 5; | |
1179 | } | |
e1652a86 KS |
1180 | else if (p->size == 8 || (p->size == 9 && !NILP (omit_port))) |
1181 | { | |
1182 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1183 | nargs = 8; | |
1184 | } | |
1185 | else if (p->size == 9) | |
1186 | { | |
1187 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1188 | nargs = 9; | |
1189 | } | |
0dccee41 | 1190 | else |
991234f0 KS |
1191 | return Qnil; |
1192 | ||
0dccee41 | 1193 | for (i = 0; i < nargs; i++) |
cbf23adb JB |
1194 | { |
1195 | EMACS_INT element = XINT (p->contents[i]); | |
1196 | ||
1197 | if (element < 0 || element > 65535) | |
1198 | return Qnil; | |
1199 | ||
1200 | if (nargs <= 5 /* IPv4 */ | |
1201 | && i < 4 /* host, not port */ | |
1202 | && element > 255) | |
1203 | return Qnil; | |
1204 | ||
1205 | args[i+1] = p->contents[i]; | |
1206 | } | |
1207 | ||
0dccee41 | 1208 | return Fformat (nargs+1, args); |
991234f0 KS |
1209 | } |
1210 | ||
1211 | if (CONSP (address)) | |
1212 | { | |
1213 | Lisp_Object args[2]; | |
1214 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1215 | args[1] = Fcar (address); |
991234f0 | 1216 | return Fformat (2, args); |
991234f0 KS |
1217 | } |
1218 | ||
1219 | return Qnil; | |
1220 | } | |
1221 | #endif | |
d0d6b7c5 | 1222 | \f |
ff6daed3 | 1223 | static Lisp_Object |
d3da34e0 | 1224 | list_processes_1 (Lisp_Object query_only) |
d0d6b7c5 JB |
1225 | { |
1226 | register Lisp_Object tail, tem; | |
1227 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1228 | register struct Lisp_Process *p; |
e690ca94 KS |
1229 | char tembuf[300]; |
1230 | int w_proc, w_buffer, w_tty; | |
1eed3bdc | 1231 | int exited = 0; |
e690ca94 KS |
1232 | Lisp_Object i_status, i_buffer, i_tty, i_command; |
1233 | ||
1234 | w_proc = 4; /* Proc */ | |
1235 | w_buffer = 6; /* Buffer */ | |
1236 | w_tty = 0; /* Omit if no ttys */ | |
1237 | ||
99784d63 | 1238 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
e690ca94 KS |
1239 | { |
1240 | int i; | |
1241 | ||
99784d63 | 1242 | proc = Fcdr (XCAR (tail)); |
e690ca94 | 1243 | p = XPROCESS (proc); |
d888760c | 1244 | if (NILP (p->type)) |
e690ca94 | 1245 | continue; |
60f0fb11 | 1246 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 KS |
1247 | continue; |
1248 | if (STRINGP (p->name) | |
d5db4077 | 1249 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1250 | w_proc = i; |
1251 | if (!NILP (p->buffer)) | |
1252 | { | |
e69c4cae SM |
1253 | if (NILP (XBUFFER (p->buffer)->name)) |
1254 | { | |
1255 | if (w_buffer < 8) | |
1256 | w_buffer = 8; /* (Killed) */ | |
1257 | } | |
d5db4077 | 1258 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1259 | w_buffer = i; |
1260 | } | |
1261 | if (STRINGP (p->tty_name) | |
d5db4077 | 1262 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1263 | w_tty = i; |
1264 | } | |
1265 | ||
1266 | XSETFASTINT (i_status, w_proc + 1); | |
1267 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1268 | if (w_tty) | |
1269 | { | |
1270 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
d3c0009d AS |
1271 | XSETFASTINT (i_command, XFASTINT (i_tty) + w_tty + 1); |
1272 | } | |
1273 | else | |
1274 | { | |
e690ca94 KS |
1275 | i_tty = Qnil; |
1276 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1277 | } | |
d0d6b7c5 | 1278 | |
22719df2 | 1279 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1280 | |
1281 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1282 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1283 | |
1284 | current_buffer->truncate_lines = Qt; | |
1285 | ||
e690ca94 KS |
1286 | write_string ("Proc", -1); |
1287 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1288 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1289 | if (!NILP (i_tty)) | |
1290 | { | |
1291 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1292 | } | |
1293 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1294 | write_string ("\n", -1); | |
1295 | ||
1296 | write_string ("----", -1); | |
1297 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1298 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1299 | if (!NILP (i_tty)) | |
1300 | { | |
1301 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1302 | } | |
1303 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1304 | write_string ("\n", -1); | |
d0d6b7c5 | 1305 | |
99784d63 | 1306 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 JB |
1307 | { |
1308 | Lisp_Object symbol; | |
1309 | ||
99784d63 | 1310 | proc = Fcdr (XCAR (tail)); |
d0d6b7c5 | 1311 | p = XPROCESS (proc); |
d888760c | 1312 | if (NILP (p->type)) |
d0d6b7c5 | 1313 | continue; |
60f0fb11 | 1314 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 | 1315 | continue; |
d0d6b7c5 JB |
1316 | |
1317 | Finsert (1, &p->name); | |
e690ca94 | 1318 | Findent_to (i_status, minspace); |
d0d6b7c5 | 1319 | |
6bfd98e7 | 1320 | if (p->raw_status_new) |
d0d6b7c5 JB |
1321 | update_status (p); |
1322 | symbol = p->status; | |
bcd69aea | 1323 | if (CONSP (p->status)) |
70949dac | 1324 | symbol = XCAR (p->status); |
d0d6b7c5 | 1325 | |
d0d6b7c5 JB |
1326 | if (EQ (symbol, Qsignal)) |
1327 | { | |
1328 | Lisp_Object tem; | |
1329 | tem = Fcar (Fcdr (p->status)); | |
7c2fb837 | 1330 | Fprinc (symbol, Qnil); |
d0d6b7c5 | 1331 | } |
d888760c | 1332 | else if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 1333 | { |
e690ca94 | 1334 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1335 | write_string ("closed", -1); |
e690ca94 KS |
1336 | else if (EQ (p->command, Qt)) |
1337 | write_string ("stopped", -1); | |
1338 | else if (EQ (symbol, Qrun)) | |
1339 | write_string ("open", -1); | |
d0d6b7c5 JB |
1340 | else |
1341 | Fprinc (symbol, Qnil); | |
1342 | } | |
d888760c GM |
1343 | else if (SERIALCONN1_P (p)) |
1344 | { | |
1345 | write_string ("running", -1); | |
1346 | } | |
d0d6b7c5 JB |
1347 | else |
1348 | Fprinc (symbol, Qnil); | |
1349 | ||
1350 | if (EQ (symbol, Qexit)) | |
1351 | { | |
1352 | Lisp_Object tem; | |
1353 | tem = Fcar (Fcdr (p->status)); | |
1354 | if (XFASTINT (tem)) | |
1355 | { | |
3162bafa | 1356 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1357 | write_string (tembuf, -1); |
1358 | } | |
1359 | } | |
1360 | ||
1eed3bdc KS |
1361 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) || EQ (symbol, Qclosed)) |
1362 | exited++; | |
d0d6b7c5 | 1363 | |
e690ca94 | 1364 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1365 | if (NILP (p->buffer)) |
1366 | insert_string ("(none)"); | |
1367 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1368 | insert_string ("(Killed)"); | |
1369 | else | |
1370 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1371 | ||
e690ca94 KS |
1372 | if (!NILP (i_tty)) |
1373 | { | |
1374 | Findent_to (i_tty, minspace); | |
1375 | if (STRINGP (p->tty_name)) | |
1376 | Finsert (1, &p->tty_name); | |
1377 | } | |
a9fde32e | 1378 | |
e690ca94 | 1379 | Findent_to (i_command, minspace); |
a9fde32e | 1380 | |
e690ca94 KS |
1381 | if (EQ (p->status, Qlisten)) |
1382 | { | |
1383 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1384 | if (INTEGERP (port)) | |
1385 | port = Fnumber_to_string (port); | |
991234f0 | 1386 | if (NILP (port)) |
0dccee41 | 1387 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1388 | sprintf (tembuf, "(network %s server on %s)\n", |
60f0fb11 | 1389 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1390 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1391 | insert_string (tembuf); |
1392 | } | |
1393 | else if (NETCONN1_P (p)) | |
63136da6 | 1394 | { |
e690ca94 KS |
1395 | /* For a local socket, there is no host name, |
1396 | so display service instead. */ | |
1397 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1398 | if (!STRINGP (host)) | |
1399 | { | |
1400 | host = Fplist_get (p->childp, QCservice); | |
1401 | if (INTEGERP (host)) | |
1402 | host = Fnumber_to_string (host); | |
1403 | } | |
991234f0 | 1404 | if (NILP (host)) |
0dccee41 | 1405 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1406 | sprintf (tembuf, "(network %s connection to %s)\n", |
60f0fb11 | 1407 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1408 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 | 1409 | insert_string (tembuf); |
63136da6 | 1410 | } |
d888760c GM |
1411 | else if (SERIALCONN1_P (p)) |
1412 | { | |
1413 | Lisp_Object port = Fplist_get (p->childp, QCport); | |
1414 | Lisp_Object speed = Fplist_get (p->childp, QCspeed); | |
1415 | insert_string ("(serial port "); | |
1416 | if (STRINGP (port)) | |
1417 | insert_string (SDATA (port)); | |
1418 | else | |
1419 | insert_string ("?"); | |
1420 | if (INTEGERP (speed)) | |
1421 | { | |
fa24b114 | 1422 | sprintf (tembuf, " at %ld b/s", (long) XINT (speed)); |
d888760c GM |
1423 | insert_string (tembuf); |
1424 | } | |
1425 | insert_string (")\n"); | |
1426 | } | |
177c0ea7 | 1427 | else |
d0d6b7c5 JB |
1428 | { |
1429 | tem = p->command; | |
1430 | while (1) | |
1431 | { | |
1432 | tem1 = Fcar (tem); | |
850d0752 NR |
1433 | if (NILP (tem1)) |
1434 | break; | |
d0d6b7c5 JB |
1435 | Finsert (1, &tem1); |
1436 | tem = Fcdr (tem); | |
1437 | if (NILP (tem)) | |
1438 | break; | |
1439 | insert_string (" "); | |
1440 | } | |
1441 | insert_string ("\n"); | |
1442 | } | |
1443 | } | |
1eed3bdc | 1444 | if (exited) |
e42bdf01 CY |
1445 | { |
1446 | status_notify (NULL); | |
1447 | redisplay_preserve_echo_area (13); | |
1448 | } | |
d0d6b7c5 JB |
1449 | return Qnil; |
1450 | } | |
1451 | ||
e690ca94 | 1452 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1453 | doc: /* Display a list of all processes. |
e690ca94 KS |
1454 | If optional argument QUERY-ONLY is non-nil, only processes with |
1455 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1456 | Any process listed as exited or signaled is actually eliminated |
1457 | after the listing is made. */) | |
5842a27b | 1458 | (Lisp_Object query_only) |
d0d6b7c5 JB |
1459 | { |
1460 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1461 | list_processes_1, query_only); |
d0d6b7c5 JB |
1462 | return Qnil; |
1463 | } | |
1464 | ||
1465 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1466 | doc: /* Return a list of all processes. */) |
5842a27b | 1467 | (void) |
d0d6b7c5 JB |
1468 | { |
1469 | return Fmapcar (Qcdr, Vprocess_alist); | |
1470 | } | |
1471 | \f | |
b0310da4 JB |
1472 | /* Starting asynchronous inferior processes. */ |
1473 | ||
d3da34e0 | 1474 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1475 | |
d0d6b7c5 | 1476 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1477 | doc: /* Start a program in a subprocess. Return the process object for it. |
1478 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1479 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1480 | |
1481 | Process output (both standard output and standard error streams) goes | |
1482 | at end of BUFFER, unless you specify an output stream or filter | |
1483 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1484 | this process is not associated with any buffer. |
1485 | ||
850d0752 NR |
1486 | PROGRAM is the program file name. It is searched for in PATH. If |
1487 | nil, just associate a pty with the buffer. Remaining arguments are | |
1488 | strings to give program as arguments. | |
320aebc9 | 1489 | |
4b6c5eee EZ |
1490 | If you want to separate standard output from standard error, invoke |
1491 | the command through a shell and redirect one of them using the shell | |
1492 | syntax. | |
320aebc9 | 1493 | |
3ecdf100 | 1494 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
5842a27b | 1495 | (int nargs, register Lisp_Object *args) |
d0d6b7c5 | 1496 | { |
1e30af70 | 1497 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1498 | register unsigned char **new_argv; |
d0d6b7c5 | 1499 | register int i; |
aed13378 | 1500 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1501 | |
1502 | buffer = args[1]; | |
1503 | if (!NILP (buffer)) | |
1504 | buffer = Fget_buffer_create (buffer); | |
1505 | ||
1e30af70 JB |
1506 | /* Make sure that the child will be able to chdir to the current |
1507 | buffer's current directory, or its unhandled equivalent. We | |
1508 | can't just have the child check for an error when it does the | |
1509 | chdir, since it's in a vfork. | |
1510 | ||
1511 | We have to GCPRO around this because Fexpand_file_name and | |
1512 | Funhandled_file_name_directory might call a file name handling | |
1513 | function. The argument list is protected by the caller, so all | |
1514 | we really have to worry about is buffer. */ | |
1515 | { | |
1516 | struct gcpro gcpro1, gcpro2; | |
1517 | ||
1518 | current_dir = current_buffer->directory; | |
1519 | ||
1520 | GCPRO2 (buffer, current_dir); | |
1521 | ||
ca319910 SM |
1522 | current_dir = Funhandled_file_name_directory (current_dir); |
1523 | if (NILP (current_dir)) | |
1524 | /* If the file name handler says that current_dir is unreachable, use | |
1525 | a sensible default. */ | |
1526 | current_dir = build_string ("~/"); | |
1527 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1528 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1529 | report_file_error ("Setting current directory", | |
1530 | Fcons (current_buffer->directory, Qnil)); | |
1531 | ||
1532 | UNGCPRO; | |
1533 | } | |
1534 | ||
d0d6b7c5 | 1535 | name = args[0]; |
b7826503 | 1536 | CHECK_STRING (name); |
d0d6b7c5 JB |
1537 | |
1538 | program = args[2]; | |
1539 | ||
850d0752 NR |
1540 | if (!NILP (program)) |
1541 | CHECK_STRING (program); | |
d0d6b7c5 | 1542 | |
d0d6b7c5 | 1543 | proc = make_process (name); |
b0310da4 JB |
1544 | /* If an error occurs and we can't start the process, we want to |
1545 | remove it from the process list. This means that each error | |
1546 | check in create_process doesn't need to call remove_process | |
1547 | itself; it's all taken care of here. */ | |
1548 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1549 | |
1550 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1551 | XPROCESS (proc)->plist = Qnil; |
d888760c | 1552 | XPROCESS (proc)->type = Qreal; |
d0d6b7c5 JB |
1553 | XPROCESS (proc)->buffer = buffer; |
1554 | XPROCESS (proc)->sentinel = Qnil; | |
1555 | XPROCESS (proc)->filter = Qnil; | |
1556 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); | |
1557 | ||
6b61353c | 1558 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1559 | XPROCESS (proc)->adaptive_read_buffering |
1560 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1561 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1562 | #endif |
1563 | ||
7af71e17 | 1564 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1565 | if (BUFFERP (buffer)) |
d8a2934e RS |
1566 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1567 | BUF_ZV (XBUFFER (buffer)), | |
1568 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1569 | |
67918941 | 1570 | { |
d5d4ae71 KH |
1571 | /* Decide coding systems for communicating with the process. Here |
1572 | we don't setup the structure coding_system nor pay attention to | |
1573 | unibyte mode. They are done in create_process. */ | |
1574 | ||
67918941 RS |
1575 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1576 | Lisp_Object coding_systems = Qt; | |
1577 | Lisp_Object val, *args2; | |
a4a37e65 | 1578 | struct gcpro gcpro1, gcpro2; |
67918941 | 1579 | |
d5d4ae71 KH |
1580 | val = Vcoding_system_for_read; |
1581 | if (NILP (val)) | |
67918941 RS |
1582 | { |
1583 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1584 | args2[0] = Qstart_process; | |
1585 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1586 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1587 | if (!NILP (program)) |
1588 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1589 | UNGCPRO; |
1590 | if (CONSP (coding_systems)) | |
70949dac | 1591 | val = XCAR (coding_systems); |
67918941 | 1592 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1593 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1594 | } |
1595 | XPROCESS (proc)->decode_coding_system = val; | |
1596 | ||
d5d4ae71 KH |
1597 | val = Vcoding_system_for_write; |
1598 | if (NILP (val)) | |
67918941 RS |
1599 | { |
1600 | if (EQ (coding_systems, Qt)) | |
1601 | { | |
1602 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1603 | args2[0] = Qstart_process; | |
1604 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1605 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1606 | if (!NILP (program)) |
1607 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1608 | UNGCPRO; |
1609 | } | |
1610 | if (CONSP (coding_systems)) | |
70949dac | 1611 | val = XCDR (coding_systems); |
67918941 | 1612 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1613 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1614 | } |
1615 | XPROCESS (proc)->encode_coding_system = val; | |
1616 | } | |
0fa1789e | 1617 | |
a4a37e65 | 1618 | |
850d0752 NR |
1619 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
1620 | XPROCESS (proc)->decoding_carryover = 0; | |
1621 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); | |
ed30cf85 | 1622 | |
850d0752 NR |
1623 | XPROCESS (proc)->inherit_coding_system_flag |
1624 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1625 | |
850d0752 NR |
1626 | if (!NILP (program)) |
1627 | { | |
1628 | /* If program file name is not absolute, search our path for it. | |
1629 | Put the name we will really use in TEM. */ | |
1630 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1631 | && !(SCHARS (program) > 1 | |
1632 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1633 | { | |
1634 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1635 | ||
1636 | tem = Qnil; | |
1637 | GCPRO4 (name, program, buffer, current_dir); | |
1638 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1639 | UNGCPRO; | |
1640 | if (NILP (tem)) | |
1641 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1642 | tem = Fexpand_file_name (tem, Qnil); | |
1643 | } | |
1644 | else | |
1645 | { | |
1646 | if (!NILP (Ffile_directory_p (program))) | |
1647 | error ("Specified program for new process is a directory"); | |
1648 | tem = program; | |
1649 | } | |
ed30cf85 | 1650 | |
850d0752 NR |
1651 | /* If program file name starts with /: for quoting a magic name, |
1652 | discard that. */ | |
1653 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1654 | && SREF (tem, 1) == ':') | |
1655 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1656 | |
77bf07e1 | 1657 | { |
850d0752 NR |
1658 | struct gcpro gcpro1; |
1659 | GCPRO1 (tem); | |
a4a37e65 | 1660 | |
850d0752 NR |
1661 | /* Encode the file name and put it in NEW_ARGV. |
1662 | That's where the child will use it to execute the program. */ | |
1663 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1664 | |
850d0752 NR |
1665 | /* Here we encode arguments by the coding system used for sending |
1666 | data to the process. We don't support using different coding | |
1667 | systems for encoding arguments and for encoding data sent to the | |
1668 | process. */ | |
77bf07e1 | 1669 | |
850d0752 NR |
1670 | for (i = 3; i < nargs; i++) |
1671 | { | |
1672 | tem = Fcons (args[i], tem); | |
1673 | CHECK_STRING (XCAR (tem)); | |
1674 | if (STRING_MULTIBYTE (XCAR (tem))) | |
1675 | XSETCAR (tem, | |
1676 | code_convert_string_norecord | |
1677 | (XCAR (tem), XPROCESS (proc)->encode_coding_system, 1)); | |
1678 | } | |
a4a37e65 | 1679 | |
850d0752 NR |
1680 | UNGCPRO; |
1681 | } | |
0fa1789e | 1682 | |
850d0752 NR |
1683 | /* Now that everything is encoded we can collect the strings into |
1684 | NEW_ARGV. */ | |
1685 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1686 | new_argv[nargs - 2] = 0; | |
52a1b894 | 1687 | |
850d0752 NR |
1688 | for (i = nargs - 3; i >= 0; i--) |
1689 | { | |
1690 | new_argv[i] = SDATA (XCAR (tem)); | |
1691 | tem = XCDR (tem); | |
1692 | } | |
1693 | ||
1694 | create_process (proc, (char **) new_argv, current_dir); | |
1695 | } | |
1696 | else | |
1697 | create_pty (proc); | |
d0d6b7c5 | 1698 | |
b0310da4 | 1699 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1700 | } |
1701 | ||
b0310da4 | 1702 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1703 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1704 | an error and the process wasn't started successfully, so we should |
1705 | remove it from the process list. */ | |
1706 | static Lisp_Object | |
d3da34e0 | 1707 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1708 | { |
bcd69aea | 1709 | if (!PROCESSP (proc)) |
b0310da4 JB |
1710 | abort (); |
1711 | ||
1712 | /* Was PROC started successfully? */ | |
850d0752 | 1713 | if (XPROCESS (proc)->pid == -1) |
b0310da4 JB |
1714 | remove_process (proc); |
1715 | ||
1716 | return Qnil; | |
1717 | } | |
1718 | ||
ff6daed3 | 1719 | static void |
d3da34e0 | 1720 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1721 | { |
30904ab7 | 1722 | /* Nothing to do. */ |
d0d6b7c5 JB |
1723 | } |
1724 | ||
30904ab7 | 1725 | |
d0d6b7c5 JB |
1726 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1727 | #ifdef USG | |
1728 | #ifdef SIGCHLD | |
1729 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1730 | ||
1731 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1732 | int sigchld_deferred; | |
1733 | ||
1734 | SIGTYPE | |
1735 | create_process_sigchld () | |
1736 | { | |
1737 | signal (SIGCHLD, create_process_sigchld); | |
1738 | ||
1739 | sigchld_deferred = 1; | |
1740 | } | |
1741 | #endif | |
1742 | #endif | |
1743 | #endif | |
1744 | ||
6b53bb85 | 1745 | void |
d3da34e0 | 1746 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1747 | { |
29ed4d51 CY |
1748 | int inchannel, outchannel; |
1749 | pid_t pid; | |
d0d6b7c5 | 1750 | int sv[2]; |
2c4df143 YM |
1751 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1752 | int wait_child_setup[2]; | |
1753 | #endif | |
0dc70c33 KH |
1754 | sigset_t procmask; |
1755 | sigset_t blocked; | |
1756 | struct sigaction sigint_action; | |
1757 | struct sigaction sigquit_action; | |
1758 | #ifdef AIX | |
1759 | struct sigaction sighup_action; | |
1760 | #endif | |
ecd1f654 KH |
1761 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1762 | volatile int forkin, forkout; | |
1763 | volatile int pty_flag = 0; | |
3ec68006 | 1764 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1765 | extern char **environ; |
3ec68006 | 1766 | #endif |
d0d6b7c5 | 1767 | |
d0d6b7c5 JB |
1768 | inchannel = outchannel = -1; |
1769 | ||
1770 | #ifdef HAVE_PTYS | |
fe45da4e | 1771 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1772 | outchannel = inchannel = allocate_pty (); |
1773 | ||
d0d6b7c5 JB |
1774 | if (inchannel >= 0) |
1775 | { | |
2af70a0c RS |
1776 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1777 | /* On most USG systems it does not work to open the pty's tty here, | |
1778 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1779 | #ifdef O_NOCTTY |
1780 | /* Don't let this terminal become our controlling terminal | |
1781 | (in case we don't have one). */ | |
68c45bf0 | 1782 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1783 | #else |
68c45bf0 | 1784 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1785 | #endif |
1786 | if (forkin < 0) | |
1787 | report_file_error ("Opening pty", Qnil); | |
1788 | #else | |
1789 | forkin = forkout = -1; | |
2af70a0c | 1790 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1791 | pty_flag = 1; |
1792 | } | |
1793 | else | |
1794 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1795 | { |
fc14013c KH |
1796 | int tem; |
1797 | tem = pipe (sv); | |
1798 | if (tem < 0) | |
1799 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1800 | inchannel = sv[0]; |
1801 | forkout = sv[1]; | |
fc14013c KH |
1802 | tem = pipe (sv); |
1803 | if (tem < 0) | |
1804 | { | |
68c45bf0 PE |
1805 | emacs_close (inchannel); |
1806 | emacs_close (forkout); | |
fc14013c KH |
1807 | report_file_error ("Creating pipe", Qnil); |
1808 | } | |
d0d6b7c5 JB |
1809 | outchannel = sv[1]; |
1810 | forkin = sv[0]; | |
1811 | } | |
d0d6b7c5 | 1812 | |
2c4df143 YM |
1813 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1814 | { | |
1815 | int tem; | |
1816 | ||
1817 | tem = pipe (wait_child_setup); | |
1818 | if (tem < 0) | |
1819 | report_file_error ("Creating pipe", Qnil); | |
1820 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1821 | if (tem >= 0) | |
1822 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1823 | if (tem < 0) | |
1824 | { | |
1825 | emacs_close (wait_child_setup[0]); | |
1826 | emacs_close (wait_child_setup[1]); | |
1827 | report_file_error ("Setting file descriptor flags", Qnil); | |
1828 | } | |
1829 | } | |
1830 | #endif | |
1831 | ||
d0d6b7c5 JB |
1832 | #if 0 |
1833 | /* Replaced by close_process_descs */ | |
1834 | set_exclusive_use (inchannel); | |
1835 | set_exclusive_use (outchannel); | |
1836 | #endif | |
1837 | ||
d0d6b7c5 JB |
1838 | #ifdef O_NONBLOCK |
1839 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1840 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1841 | #else |
1842 | #ifdef O_NDELAY | |
1843 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1844 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1845 | #endif |
1846 | #endif | |
1847 | ||
1848 | /* Record this as an active process, with its channels. | |
1849 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1850 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1851 | XPROCESS (process)->infd = inchannel; |
1852 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1853 | |
1854 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1855 | It was only used for getting the foreground tty process, so now | |
1856 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1857 | more portable (see USG_SUBTTY_WORKS above). */ | |
1858 | ||
60f0fb11 | 1859 | XPROCESS (process)->pty_flag = pty_flag; |
d0d6b7c5 | 1860 | XPROCESS (process)->status = Qrun; |
03f04413 | 1861 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1862 | |
1863 | /* Delay interrupts until we have a chance to store | |
1864 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1865 | sigemptyset (&blocked); |
1866 | #ifdef SIGCHLD | |
1867 | sigaddset (&blocked, SIGCHLD); | |
1868 | #endif | |
351e611f | 1869 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1870 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1871 | this sets the parent's signal handlers as well as the child's. | |
1872 | So delay all interrupts whose handlers the child might munge, | |
1873 | and record the current handlers so they can be restored later. */ | |
1874 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1875 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1876 | #ifdef AIX | |
1877 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1878 | #endif | |
351e611f | 1879 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 | 1880 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
d0d6b7c5 | 1881 | |
3081bf8d | 1882 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1883 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1884 | if (inchannel > max_process_desc) |
1885 | max_process_desc = inchannel; | |
1886 | ||
d0d6b7c5 JB |
1887 | /* Until we store the proper pid, enable sigchld_handler |
1888 | to recognize an unknown pid as standing for this process. | |
1889 | It is very important not to let this `marker' value stay | |
1890 | in the table after this function has returned; if it does | |
1891 | it might cause call-process to hang and subsequent asynchronous | |
1892 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1893 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1894 | |
ececcbec | 1895 | BLOCK_INPUT; |
177c0ea7 | 1896 | |
d0d6b7c5 JB |
1897 | { |
1898 | /* child_setup must clobber environ on systems with true vfork. | |
1899 | Protect it from permanent change. */ | |
1900 | char **save_environ = environ; | |
1901 | ||
14dc6093 | 1902 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1903 | |
e98d950b | 1904 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1905 | pid = vfork (); |
1906 | if (pid == 0) | |
e98d950b | 1907 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1908 | { |
1909 | int xforkin = forkin; | |
1910 | int xforkout = forkout; | |
1911 | ||
1912 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1913 | but fails to handle all the cases. */ | |
1914 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1915 | sigsetmask (SIGEMPTYMASK); | |
1916 | #endif | |
1917 | ||
1918 | /* Make the pty be the controlling terminal of the process. */ | |
1919 | #ifdef HAVE_PTYS | |
1920 | /* First, disconnect its current controlling terminal. */ | |
1921 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1922 | /* We tried doing setsid only if pty_flag, but it caused |
1923 | process_set_signal to fail on SGI when using a pipe. */ | |
1924 | setsid (); | |
ce4c9c90 | 1925 | /* Make the pty's terminal the controlling terminal. */ |
ce8f5a9a | 1926 | if (pty_flag && xforkin >= 0) |
39e9ebcd | 1927 | { |
39e9ebcd RS |
1928 | #ifdef TIOCSCTTY |
1929 | /* We ignore the return value | |
1930 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1931 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1932 | #endif |
39e9ebcd | 1933 | } |
d0d6b7c5 | 1934 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1935 | #ifdef USG |
000ab717 | 1936 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1937 | afterwards. Otherwise, we lose our controlling tty which |
1938 | is set when we open the pty. */ | |
1939 | setpgrp (); | |
1940 | #endif /* USG */ | |
1941 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
1942 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
1943 | if (pty_flag && xforkin >= 0) | |
1944 | { | |
1945 | struct termios t; | |
1946 | tcgetattr (xforkin, &t); | |
1947 | t.c_lflag = LDISC1; | |
1948 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1949 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1950 | } |
1951 | #else | |
aafadd9f | 1952 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1953 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1954 | { |
1955 | /* Use new line discipline. */ | |
1956 | int ldisc = NTTYDISC; | |
4458f555 | 1957 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1958 | } |
000ab717 | 1959 | #endif |
9bcf8ec6 | 1960 | #endif |
177c0ea7 | 1961 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1962 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1963 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1964 | if (pty_flag) | |
1965 | { | |
177c0ea7 | 1966 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1967 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1968 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
ce8f5a9a AS |
1969 | if (j >= 0) |
1970 | { | |
1971 | ioctl (j, TIOCNOTTY, 0); | |
1972 | emacs_close (j); | |
1973 | } | |
5a570e37 | 1974 | #ifndef USG |
d0d6b7c5 JB |
1975 | /* In order to get a controlling terminal on some versions |
1976 | of BSD, it is necessary to put the process in pgrp 0 | |
1977 | before it opens the terminal. */ | |
99c1aeca | 1978 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1979 | setpgid (0, 0); |
1980 | #else | |
d0d6b7c5 | 1981 | setpgrp (0, 0); |
3ea1d291 | 1982 | #endif |
d0d6b7c5 JB |
1983 | #endif |
1984 | } | |
1985 | #endif /* TIOCNOTTY */ | |
1986 | ||
e39a993c | 1987 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1988 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1989 | conditional on TIOCSPGRP, |
1990 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1991 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1992 | that system does seem to need this code, even though | |
1993 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1994 | /* Now close the pty (if we had it open) and reopen it. |
1995 | This makes the pty the controlling terminal of the subprocess. */ | |
1996 | if (pty_flag) | |
1997 | { | |
99e3d726 | 1998 | |
68c45bf0 PE |
1999 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2000 | would work? */ | |
d0d6b7c5 | 2001 | if (xforkin >= 0) |
68c45bf0 PE |
2002 | emacs_close (xforkin); |
2003 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2004 | |
4aa54ba8 RS |
2005 | if (xforkin < 0) |
2006 | { | |
68c45bf0 PE |
2007 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2008 | emacs_write (1, pty_name, strlen (pty_name)); | |
2009 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2010 | _exit (1); |
2011 | } | |
2012 | ||
d0d6b7c5 | 2013 | } |
e39a993c | 2014 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 2015 | |
d0d6b7c5 | 2016 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2017 | if (pty_flag) |
2018 | { | |
2019 | SETUP_SLAVE_PTY; | |
2020 | } | |
d0d6b7c5 JB |
2021 | #endif /* SETUP_SLAVE_PTY */ |
2022 | #ifdef AIX | |
2023 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2024 | Now reenable it in the child, so it will die when we want it to. */ | |
2025 | if (pty_flag) | |
2026 | signal (SIGHUP, SIG_DFL); | |
2027 | #endif | |
2028 | #endif /* HAVE_PTYS */ | |
2029 | ||
0dc70c33 KH |
2030 | signal (SIGINT, SIG_DFL); |
2031 | signal (SIGQUIT, SIG_DFL); | |
2032 | ||
2033 | /* Stop blocking signals in the child. */ | |
0dc70c33 | 2034 | sigprocmask (SIG_SETMASK, &procmask, 0); |
5e7e1da2 | 2035 | |
ab01d0a8 RS |
2036 | if (pty_flag) |
2037 | child_setup_tty (xforkout); | |
e98d950b RS |
2038 | #ifdef WINDOWSNT |
2039 | pid = child_setup (xforkin, xforkout, xforkout, | |
2040 | new_argv, 1, current_dir); | |
177c0ea7 | 2041 | #else /* not WINDOWSNT */ |
2c4df143 YM |
2042 | #ifdef FD_CLOEXEC |
2043 | emacs_close (wait_child_setup[0]); | |
2044 | #endif | |
d0d6b7c5 | 2045 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2046 | new_argv, 1, current_dir); |
e98d950b | 2047 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2048 | } |
2049 | environ = save_environ; | |
2050 | } | |
2051 | ||
ececcbec RS |
2052 | UNBLOCK_INPUT; |
2053 | ||
4a127b3b | 2054 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2055 | if (pid < 0) |
6311cf58 RS |
2056 | { |
2057 | if (forkin >= 0) | |
68c45bf0 | 2058 | emacs_close (forkin); |
6311cf58 | 2059 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2060 | emacs_close (forkout); |
6311cf58 | 2061 | } |
4a127b3b KH |
2062 | else |
2063 | { | |
2064 | /* vfork succeeded. */ | |
6bfd98e7 | 2065 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 2066 | |
e98d950b | 2067 | #ifdef WINDOWSNT |
4a127b3b | 2068 | register_child (pid, inchannel); |
e98d950b RS |
2069 | #endif /* WINDOWSNT */ |
2070 | ||
4a127b3b KH |
2071 | /* If the subfork execv fails, and it exits, |
2072 | this close hangs. I don't know why. | |
2073 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2074 | { |
2075 | struct atimer *timer; | |
2076 | EMACS_TIME offset; | |
177c0ea7 | 2077 | |
30904ab7 GM |
2078 | stop_polling (); |
2079 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2080 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2081 | |
30904ab7 GM |
2082 | if (forkin >= 0) |
2083 | emacs_close (forkin); | |
2084 | ||
2085 | cancel_atimer (timer); | |
2086 | start_polling (); | |
2087 | } | |
177c0ea7 | 2088 | |
4a127b3b | 2089 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2090 | emacs_close (forkout); |
d0d6b7c5 | 2091 | |
875e6b94 | 2092 | #ifdef HAVE_PTYS |
4a127b3b KH |
2093 | if (pty_flag) |
2094 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2095 | else | |
875e6b94 | 2096 | #endif |
4a127b3b | 2097 | XPROCESS (process)->tty_name = Qnil; |
2c4df143 YM |
2098 | |
2099 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
2100 | /* Wait for child_setup to complete in case that vfork is | |
2101 | actually defined as fork. The descriptor wait_child_setup[1] | |
2102 | of a pipe is closed at the child side either by close-on-exec | |
2103 | on successful execvp or the _exit call in child_setup. */ | |
2104 | { | |
2105 | char dummy; | |
2106 | ||
2107 | emacs_close (wait_child_setup[1]); | |
2108 | emacs_read (wait_child_setup[0], &dummy, 1); | |
2109 | emacs_close (wait_child_setup[0]); | |
2110 | } | |
2111 | #endif | |
4a127b3b | 2112 | } |
3b9a3dfa | 2113 | |
4a127b3b KH |
2114 | /* Restore the signal state whether vfork succeeded or not. |
2115 | (We will signal an error, below, if it failed.) */ | |
351e611f | 2116 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2117 | /* Restore the parent's signal handlers. */ |
2118 | sigaction (SIGINT, &sigint_action, 0); | |
2119 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2120 | #ifdef AIX | |
2121 | sigaction (SIGHUP, &sighup_action, 0); | |
2122 | #endif | |
351e611f | 2123 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2124 | /* Stop blocking signals in the parent. */ |
2125 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
4a127b3b KH |
2126 | |
2127 | /* Now generate the error if vfork failed. */ | |
2128 | if (pid < 0) | |
2129 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 2130 | } |
d0d6b7c5 | 2131 | |
850d0752 | 2132 | void |
d3da34e0 | 2133 | create_pty (Lisp_Object process) |
850d0752 NR |
2134 | { |
2135 | int inchannel, outchannel; | |
2136 | ||
2137 | /* Use volatile to protect variables from being clobbered by longjmp. */ | |
2138 | volatile int forkin, forkout; | |
2139 | volatile int pty_flag = 0; | |
2140 | ||
2141 | inchannel = outchannel = -1; | |
2142 | ||
2143 | #ifdef HAVE_PTYS | |
2144 | if (!NILP (Vprocess_connection_type)) | |
2145 | outchannel = inchannel = allocate_pty (); | |
2146 | ||
2147 | if (inchannel >= 0) | |
2148 | { | |
2149 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
2150 | /* On most USG systems it does not work to open the pty's tty here, | |
2151 | then close it and reopen it in the child. */ | |
2152 | #ifdef O_NOCTTY | |
2153 | /* Don't let this terminal become our controlling terminal | |
2154 | (in case we don't have one). */ | |
2155 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); | |
2156 | #else | |
2157 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); | |
2158 | #endif | |
2159 | if (forkin < 0) | |
2160 | report_file_error ("Opening pty", Qnil); | |
019d2c4c | 2161 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
2162 | /* In the case that vfork is defined as fork, the parent process |
2163 | (Emacs) may send some data before the child process completes | |
2164 | tty options setup. So we setup tty before forking. */ | |
2165 | child_setup_tty (forkout); | |
019d2c4c | 2166 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
2167 | #else |
2168 | forkin = forkout = -1; | |
2169 | #endif /* not USG, or USG_SUBTTY_WORKS */ | |
2170 | pty_flag = 1; | |
2171 | } | |
2172 | #endif /* HAVE_PTYS */ | |
2173 | ||
2174 | #ifdef O_NONBLOCK | |
2175 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
2176 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
2177 | #else | |
2178 | #ifdef O_NDELAY | |
2179 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
2180 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
2181 | #endif | |
2182 | #endif | |
2183 | ||
2184 | /* Record this as an active process, with its channels. | |
2185 | As a result, child_setup will close Emacs's side of the pipes. */ | |
2186 | chan_process[inchannel] = process; | |
2187 | XPROCESS (process)->infd = inchannel; | |
2188 | XPROCESS (process)->outfd = outchannel; | |
2189 | ||
2190 | /* Previously we recorded the tty descriptor used in the subprocess. | |
2191 | It was only used for getting the foreground tty process, so now | |
2192 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
2193 | more portable (see USG_SUBTTY_WORKS above). */ | |
2194 | ||
2195 | XPROCESS (process)->pty_flag = pty_flag; | |
2196 | XPROCESS (process)->status = Qrun; | |
2197 | setup_process_coding_systems (process); | |
2198 | ||
2199 | FD_SET (inchannel, &input_wait_mask); | |
2200 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
2201 | if (inchannel > max_process_desc) | |
2202 | max_process_desc = inchannel; | |
2203 | ||
2204 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
2205 | #ifdef HAVE_PTYS |
2206 | if (pty_flag) | |
2207 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2208 | else | |
2209 | #endif | |
2210 | XPROCESS (process)->tty_name = Qnil; | |
850d0752 NR |
2211 | } |
2212 | ||
e690ca94 | 2213 | \f |
d0d6b7c5 JB |
2214 | #ifdef HAVE_SOCKETS |
2215 | ||
e690ca94 KS |
2216 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2217 | The address family of sa is not included in the result. */ | |
2218 | ||
2219 | static Lisp_Object | |
d3da34e0 | 2220 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
2221 | { |
2222 | Lisp_Object address; | |
2223 | int i; | |
2224 | unsigned char *cp; | |
2225 | register struct Lisp_Vector *p; | |
2226 | ||
63136da6 AS |
2227 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2228 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2229 | a zero length name. */ | |
89887d67 | 2230 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2231 | return empty_unibyte_string; |
63136da6 | 2232 | |
e690ca94 KS |
2233 | switch (sa->sa_family) |
2234 | { | |
2235 | case AF_INET: | |
2236 | { | |
2237 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2238 | len = sizeof (sin->sin_addr) + 1; | |
2239 | address = Fmake_vector (make_number (len), Qnil); | |
2240 | p = XVECTOR (address); | |
2241 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2242 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2243 | break; |
2244 | } | |
e1652a86 KS |
2245 | #ifdef AF_INET6 |
2246 | case AF_INET6: | |
2247 | { | |
2248 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2249 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2250 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2251 | address = Fmake_vector (make_number (len), Qnil); | |
2252 | p = XVECTOR (address); | |
2253 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2254 | for (i = 0; i < len; i++) | |
2255 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2256 | return address; | |
2257 | } | |
2258 | #endif | |
e690ca94 KS |
2259 | #ifdef HAVE_LOCAL_SOCKETS |
2260 | case AF_LOCAL: | |
2261 | { | |
fb23673a EZ |
2262 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2263 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2264 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2265 | break; |
fb23673a | 2266 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2267 | } |
2268 | #endif | |
2269 | default: | |
89887d67 | 2270 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2271 | address = Fcons (make_number (sa->sa_family), |
2272 | Fmake_vector (make_number (len), Qnil)); | |
2273 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2274 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2275 | break; |
2276 | } | |
2277 | ||
2278 | i = 0; | |
2279 | while (i < len) | |
2280 | p->contents[i++] = make_number (*cp++); | |
2281 | ||
2282 | return address; | |
2283 | } | |
2284 | ||
2285 | ||
2286 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2287 | ||
2288 | static int | |
d3da34e0 | 2289 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2290 | { |
2291 | register struct Lisp_Vector *p; | |
2292 | ||
2293 | if (VECTORP (address)) | |
2294 | { | |
2295 | p = XVECTOR (address); | |
2296 | if (p->size == 5) | |
2297 | { | |
2298 | *familyp = AF_INET; | |
2299 | return sizeof (struct sockaddr_in); | |
2300 | } | |
e1652a86 KS |
2301 | #ifdef AF_INET6 |
2302 | else if (p->size == 9) | |
2303 | { | |
2304 | *familyp = AF_INET6; | |
2305 | return sizeof (struct sockaddr_in6); | |
2306 | } | |
2307 | #endif | |
e690ca94 KS |
2308 | } |
2309 | #ifdef HAVE_LOCAL_SOCKETS | |
2310 | else if (STRINGP (address)) | |
2311 | { | |
2312 | *familyp = AF_LOCAL; | |
2313 | return sizeof (struct sockaddr_un); | |
2314 | } | |
2315 | #endif | |
2316 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2317 | { | |
2318 | struct sockaddr *sa; | |
2319 | *familyp = XINT (XCAR (address)); | |
2320 | p = XVECTOR (XCDR (address)); | |
2321 | return p->size + sizeof (sa->sa_family); | |
2322 | } | |
2323 | return 0; | |
2324 | } | |
2325 | ||
2326 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2327 | |
2328 | The address format has been basically validated by | |
2329 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2330 | it could have come from user data. So if FAMILY is not valid, | |
2331 | we return after zeroing *SA. */ | |
e690ca94 KS |
2332 | |
2333 | static void | |
d3da34e0 | 2334 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2335 | { |
2336 | register struct Lisp_Vector *p; | |
34967d0f | 2337 | register unsigned char *cp = NULL; |
e690ca94 KS |
2338 | register int i; |
2339 | ||
72af86bd | 2340 | memset (sa, 0, len); |
e690ca94 KS |
2341 | |
2342 | if (VECTORP (address)) | |
2343 | { | |
2344 | p = XVECTOR (address); | |
2345 | if (family == AF_INET) | |
2346 | { | |
2347 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2348 | len = sizeof (sin->sin_addr) + 1; | |
2349 | i = XINT (p->contents[--len]); | |
2350 | sin->sin_port = htons (i); | |
2351 | cp = (unsigned char *)&sin->sin_addr; | |
9d1a8e5d | 2352 | sa->sa_family = family; |
e690ca94 | 2353 | } |
e1652a86 KS |
2354 | #ifdef AF_INET6 |
2355 | else if (family == AF_INET6) | |
2356 | { | |
2357 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2358 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2359 | len = sizeof (sin6->sin6_addr) + 1; | |
2360 | i = XINT (p->contents[--len]); | |
2361 | sin6->sin6_port = htons (i); | |
2362 | for (i = 0; i < len; i++) | |
2363 | if (INTEGERP (p->contents[i])) | |
2364 | { | |
2365 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2366 | ip6[i] = ntohs (j); | |
2367 | } | |
9d1a8e5d | 2368 | sa->sa_family = family; |
0eb7675e | 2369 | return; |
e1652a86 KS |
2370 | } |
2371 | #endif | |
0eb7675e AS |
2372 | else |
2373 | return; | |
e690ca94 KS |
2374 | } |
2375 | else if (STRINGP (address)) | |
2376 | { | |
2377 | #ifdef HAVE_LOCAL_SOCKETS | |
2378 | if (family == AF_LOCAL) | |
2379 | { | |
fb23673a | 2380 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2381 | cp = SDATA (address); |
fb23673a EZ |
2382 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2383 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2384 | sa->sa_family = family; |
e690ca94 KS |
2385 | } |
2386 | #endif | |
2387 | return; | |
2388 | } | |
2389 | else | |
2390 | { | |
2391 | p = XVECTOR (XCDR (address)); | |
2392 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2393 | } | |
2394 | ||
2395 | for (i = 0; i < len; i++) | |
2396 | if (INTEGERP (p->contents[i])) | |
2397 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2398 | } | |
2399 | ||
2400 | #ifdef DATAGRAM_SOCKETS | |
2401 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2402 | 1, 1, 0, | |
2403 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2404 | (Lisp_Object process) |
e690ca94 KS |
2405 | { |
2406 | int channel; | |
2407 | ||
2408 | CHECK_PROCESS (process); | |
2409 | ||
2410 | if (!DATAGRAM_CONN_P (process)) | |
2411 | return Qnil; | |
2412 | ||
60f0fb11 | 2413 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2414 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2415 | datagram_address[channel].len); | |
2416 | } | |
2417 | ||
2418 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2419 | 2, 2, 0, | |
2420 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2421 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2422 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2423 | { |
2424 | int channel; | |
2425 | int family, len; | |
2426 | ||
2427 | CHECK_PROCESS (process); | |
2428 | ||
2429 | if (!DATAGRAM_CONN_P (process)) | |
2430 | return Qnil; | |
2431 | ||
60f0fb11 | 2432 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2433 | |
2434 | len = get_lisp_to_sockaddr_size (address, &family); | |
2435 | if (datagram_address[channel].len != len) | |
2436 | return Qnil; | |
2437 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2438 | return address; | |
2439 | } | |
2440 | #endif | |
2441 | \f | |
2442 | ||
5e2327cf | 2443 | static const struct socket_options { |
e690ca94 | 2444 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2445 | name without SO_ prefix. */ |
e690ca94 | 2446 | char *name; |
e690ca94 KS |
2447 | /* Option level SOL_... */ |
2448 | int optlevel; | |
2449 | /* Option number SO_... */ | |
2450 | int optnum; | |
6b61353c KH |
2451 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2452 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2453 | } socket_options[] = |
2454 | { | |
2455 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2456 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2457 | #endif |
2458 | #ifdef SO_BROADCAST | |
6b61353c | 2459 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2460 | #endif |
2461 | #ifdef SO_DONTROUTE | |
6b61353c | 2462 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2463 | #endif |
2464 | #ifdef SO_KEEPALIVE | |
6b61353c | 2465 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2466 | #endif |
2467 | #ifdef SO_LINGER | |
6b61353c | 2468 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2469 | #endif |
2470 | #ifdef SO_OOBINLINE | |
6b61353c | 2471 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2472 | #endif |
2473 | #ifdef SO_PRIORITY | |
6b61353c | 2474 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2475 | #endif |
2476 | #ifdef SO_REUSEADDR | |
6b61353c | 2477 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2478 | #endif |
6b61353c | 2479 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2480 | }; |
2481 | ||
6b61353c | 2482 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2483 | |
6b61353c KH |
2484 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2485 | Signals an error if setting a known option fails. | |
2486 | */ | |
e690ca94 KS |
2487 | |
2488 | static int | |
d3da34e0 | 2489 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2490 | { |
6b61353c | 2491 | char *name; |
5e2327cf | 2492 | const struct socket_options *sopt; |
6b61353c | 2493 | int ret = 0; |
e690ca94 | 2494 | |
6b61353c | 2495 | CHECK_SYMBOL (opt); |
e690ca94 | 2496 | |
6b61353c KH |
2497 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2498 | for (sopt = socket_options; sopt->name; sopt++) | |
2499 | if (strcmp (name, sopt->name) == 0) | |
2500 | break; | |
e690ca94 | 2501 | |
6b61353c KH |
2502 | switch (sopt->opttype) |
2503 | { | |
2504 | case SOPT_BOOL: | |
2505 | { | |
2506 | int optval; | |
2507 | optval = NILP (val) ? 0 : 1; | |
2508 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2509 | &optval, sizeof (optval)); | |
2510 | break; | |
2511 | } | |
e690ca94 | 2512 | |
6b61353c KH |
2513 | case SOPT_INT: |
2514 | { | |
2515 | int optval; | |
2516 | if (INTEGERP (val)) | |
2517 | optval = XINT (val); | |
2518 | else | |
2519 | error ("Bad option value for %s", name); | |
2520 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2521 | &optval, sizeof (optval)); | |
2522 | break; | |
2523 | } | |
e690ca94 | 2524 | |
6b61353c KH |
2525 | #ifdef SO_BINDTODEVICE |
2526 | case SOPT_IFNAME: | |
2527 | { | |
2528 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2529 | |
6b61353c KH |
2530 | /* This is broken, at least in the Linux 2.4 kernel. |
2531 | To unbind, the arg must be a zero integer, not the empty string. | |
2532 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2533 | memset (devname, 0, sizeof devname); |
6b61353c | 2534 | if (STRINGP (val)) |
e690ca94 | 2535 | { |
6b61353c KH |
2536 | char *arg = (char *) SDATA (val); |
2537 | int len = min (strlen (arg), IFNAMSIZ); | |
72af86bd | 2538 | memcpy (devname, arg, len); |
e690ca94 | 2539 | } |
6b61353c KH |
2540 | else if (!NILP (val)) |
2541 | error ("Bad option value for %s", name); | |
2542 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2543 | devname, IFNAMSIZ); | |
2544 | break; | |
2545 | } | |
2546 | #endif | |
e690ca94 | 2547 | |
177c0ea7 | 2548 | #ifdef SO_LINGER |
6b61353c KH |
2549 | case SOPT_LINGER: |
2550 | { | |
2551 | struct linger linger; | |
e690ca94 | 2552 | |
6b61353c KH |
2553 | linger.l_onoff = 1; |
2554 | linger.l_linger = 0; | |
2555 | if (INTEGERP (val)) | |
2556 | linger.l_linger = XINT (val); | |
2557 | else | |
2558 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2559 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2560 | &linger, sizeof (linger)); | |
2561 | break; | |
2562 | } | |
e690ca94 | 2563 | #endif |
6b61353c KH |
2564 | |
2565 | default: | |
2566 | return 0; | |
e690ca94 | 2567 | } |
6b61353c KH |
2568 | |
2569 | if (ret < 0) | |
2570 | report_file_error ("Cannot set network option", | |
2571 | Fcons (opt, Fcons (val, Qnil))); | |
2572 | return (1 << sopt->optbit); | |
e690ca94 KS |
2573 | } |
2574 | ||
6b61353c KH |
2575 | |
2576 | DEFUN ("set-network-process-option", | |
2577 | Fset_network_process_option, Sset_network_process_option, | |
2578 | 3, 4, 0, | |
2579 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2580 | See `make-network-process' for a list of options and values. | |
2581 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2582 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2583 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2584 | { |
6b61353c KH |
2585 | int s; |
2586 | struct Lisp_Process *p; | |
e690ca94 | 2587 | |
e690ca94 | 2588 | CHECK_PROCESS (process); |
6b61353c KH |
2589 | p = XPROCESS (process); |
2590 | if (!NETCONN1_P (p)) | |
2591 | error ("Process is not a network process"); | |
2592 | ||
60f0fb11 | 2593 | s = p->infd; |
6b61353c KH |
2594 | if (s < 0) |
2595 | error ("Process is not running"); | |
2596 | ||
2597 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2598 | { |
6b61353c KH |
2599 | p->childp = Fplist_put (p->childp, option, value); |
2600 | return Qt; | |
e690ca94 | 2601 | } |
6b61353c KH |
2602 | |
2603 | if (NILP (no_error)) | |
2604 | error ("Unknown or unsupported option"); | |
2605 | ||
2606 | return Qnil; | |
e690ca94 | 2607 | } |
6b61353c | 2608 | |
e690ca94 | 2609 | \f |
d888760c GM |
2610 | #ifdef HAVE_SERIAL |
2611 | DEFUN ("serial-process-configure", | |
2612 | Fserial_process_configure, | |
2613 | Sserial_process_configure, | |
2614 | 0, MANY, 0, | |
2615 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2616 | ||
2617 | Arguments are specified as keyword/argument pairs. Attributes that | |
2618 | are not given are re-initialized from the process's current | |
2619 | configuration (available via the function `process-contact') or set to | |
2620 | reasonable default values. The following arguments are defined: | |
2621 | ||
2622 | :process PROCESS | |
2623 | :name NAME | |
2624 | :buffer BUFFER | |
2625 | :port PORT | |
2626 | -- Any of these arguments can be given to identify the process that is | |
2627 | to be configured. If none of these arguments is given, the current | |
2628 | buffer's process is used. | |
2629 | ||
2630 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2631 | second, also called baud rate. Any value can be given for SPEED, but | |
2632 | most serial ports work only at a few defined values between 1200 and | |
2633 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2634 | serial port is not configured any further, i.e., all other arguments | |
2635 | are ignored. This may be useful for special serial ports such as | |
2636 | Bluetooth-to-serial converters which can only be configured through AT | |
2637 | commands. A value of nil for SPEED can be used only when passed | |
2638 | through `make-serial-process' or `serial-term'. | |
2639 | ||
2640 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2641 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2642 | ||
2643 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2644 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2645 | PARITY is not given, no parity is used. | |
2646 | ||
2647 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2648 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2649 | is not given or nil, 1 stopbit is used. | |
2650 | ||
2651 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2652 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2653 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2654 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2655 | flowcontrol is used. | |
2656 | ||
2657 | `serial-process-configure' is called by `make-serial-process' for the | |
2658 | initial configuration of the serial port. | |
2659 | ||
2660 | Examples: | |
2661 | ||
2662 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2663 | ||
2664 | \(serial-process-configure | |
2665 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2666 | ||
2667 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2668 | ||
2669 | usage: (serial-process-configure &rest ARGS) */) | |
5842a27b | 2670 | (int nargs, Lisp_Object *args) |
d888760c GM |
2671 | { |
2672 | struct Lisp_Process *p; | |
2673 | Lisp_Object contact = Qnil; | |
2674 | Lisp_Object proc = Qnil; | |
2675 | struct gcpro gcpro1; | |
2676 | ||
2677 | contact = Flist (nargs, args); | |
2678 | GCPRO1 (contact); | |
2679 | ||
2680 | proc = Fplist_get (contact, QCprocess); | |
2681 | if (NILP (proc)) | |
2682 | proc = Fplist_get (contact, QCname); | |
2683 | if (NILP (proc)) | |
2684 | proc = Fplist_get (contact, QCbuffer); | |
2685 | if (NILP (proc)) | |
2686 | proc = Fplist_get (contact, QCport); | |
2687 | proc = get_process (proc); | |
2688 | p = XPROCESS (proc); | |
a879ee6f | 2689 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2690 | error ("Not a serial process"); |
2691 | ||
2692 | if (NILP (Fplist_get (p->childp, QCspeed))) | |
2693 | { | |
2694 | UNGCPRO; | |
2695 | return Qnil; | |
2696 | } | |
2697 | ||
2698 | serial_configure (p, contact); | |
2699 | ||
2700 | UNGCPRO; | |
2701 | return Qnil; | |
2702 | } | |
d888760c | 2703 | |
d888760c GM |
2704 | /* Used by make-serial-process to recover from errors. */ |
2705 | Lisp_Object make_serial_process_unwind (Lisp_Object proc) | |
2706 | { | |
2707 | if (!PROCESSP (proc)) | |
2708 | abort (); | |
2709 | remove_process (proc); | |
2710 | return Qnil; | |
2711 | } | |
d888760c | 2712 | |
d888760c GM |
2713 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2714 | 0, MANY, 0, | |
2715 | doc: /* Create and return a serial port process. | |
2716 | ||
2717 | In Emacs, serial port connections are represented by process objects, | |
2718 | so input and output work as for subprocesses, and `delete-process' | |
2719 | closes a serial port connection. However, a serial process has no | |
2720 | process id, it cannot be signaled, and the status codes are different | |
2721 | from normal processes. | |
2722 | ||
2723 | `make-serial-process' creates a process and a buffer, on which you | |
2724 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2725 | an interactive terminal. See below for examples. | |
2726 | ||
2727 | Arguments are specified as keyword/argument pairs. The following | |
2728 | arguments are defined: | |
2729 | ||
2730 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2731 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2732 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2733 | the backslashes in strings). | |
2734 | ||
2735 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
2736 | which is called by `make-serial-process'. | |
2737 | ||
2738 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2739 | the value of PORT is used. | |
2740 | ||
2741 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2742 | with the process. Process output goes at the end of that buffer, | |
2743 | unless you specify an output stream or filter function to handle the | |
2744 | output. If BUFFER is not given, the value of NAME is used. | |
2745 | ||
2746 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2747 | system used for both reading and writing for this process. If CODING | |
2748 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2749 | ENCODING is used for writing. | |
2750 | ||
2751 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2752 | the process is running. If BOOL is not given, query before exiting. | |
2753 | ||
2754 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2755 | In the stopped state, a serial process does not accept incoming data, | |
2756 | but you can send outgoing data. The stopped state is cleared by | |
2757 | `continue-process' and set by `stop-process'. | |
2758 | ||
2759 | :filter FILTER -- Install FILTER as the process filter. | |
2760 | ||
2761 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2762 | ||
2763 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2764 | ||
2765 | :speed | |
2766 | :bytesize | |
2767 | :parity | |
2768 | :stopbits | |
2769 | :flowcontrol | |
2770 | -- These arguments are handled by `serial-process-configure', which is | |
2771 | called by `make-serial-process'. | |
2772 | ||
2773 | The original argument list, possibly modified by later configuration, | |
2774 | is available via the function `process-contact'. | |
2775 | ||
2776 | Examples: | |
2777 | ||
2778 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2779 | ||
2780 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2781 | ||
2782 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2783 | ||
2784 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2785 | ||
2786 | usage: (make-serial-process &rest ARGS) */) | |
5842a27b | 2787 | (int nargs, Lisp_Object *args) |
d888760c GM |
2788 | { |
2789 | int fd = -1; | |
2790 | Lisp_Object proc, contact, port; | |
2791 | struct Lisp_Process *p; | |
2792 | struct gcpro gcpro1; | |
2793 | Lisp_Object name, buffer; | |
2794 | Lisp_Object tem, val; | |
2795 | int specpdl_count = -1; | |
2796 | ||
2797 | if (nargs == 0) | |
2798 | return Qnil; | |
2799 | ||
2800 | contact = Flist (nargs, args); | |
2801 | GCPRO1 (contact); | |
2802 | ||
2803 | port = Fplist_get (contact, QCport); | |
2804 | if (NILP (port)) | |
2805 | error ("No port specified"); | |
2806 | CHECK_STRING (port); | |
2807 | ||
2808 | if (NILP (Fplist_member (contact, QCspeed))) | |
2809 | error (":speed not specified"); | |
2810 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2811 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2812 | ||
2813 | name = Fplist_get (contact, QCname); | |
2814 | if (NILP (name)) | |
2815 | name = port; | |
2816 | CHECK_STRING (name); | |
2817 | proc = make_process (name); | |
2818 | specpdl_count = SPECPDL_INDEX (); | |
2819 | record_unwind_protect (make_serial_process_unwind, proc); | |
2820 | p = XPROCESS (proc); | |
2821 | ||
2822 | fd = serial_open ((char*) SDATA (port)); | |
2823 | p->infd = fd; | |
2824 | p->outfd = fd; | |
2825 | if (fd > max_process_desc) | |
2826 | max_process_desc = fd; | |
2827 | chan_process[fd] = proc; | |
2828 | ||
2829 | buffer = Fplist_get (contact, QCbuffer); | |
2830 | if (NILP (buffer)) | |
2831 | buffer = name; | |
2832 | buffer = Fget_buffer_create (buffer); | |
2833 | p->buffer = buffer; | |
2834 | ||
2835 | p->childp = contact; | |
2836 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); | |
2837 | p->type = Qserial; | |
2838 | p->sentinel = Fplist_get (contact, QCsentinel); | |
2839 | p->filter = Fplist_get (contact, QCfilter); | |
2840 | p->log = Qnil; | |
2841 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
2842 | p->kill_without_query = 1; | |
2843 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
2844 | p->command = Qt; | |
2845 | p->pty_flag = 0; | |
2846 | ||
2847 | if (!EQ (p->command, Qt)) | |
2848 | { | |
2849 | FD_SET (fd, &input_wait_mask); | |
2850 | FD_SET (fd, &non_keyboard_wait_mask); | |
2851 | } | |
2852 | ||
2853 | if (BUFFERP (buffer)) | |
2854 | { | |
2855 | set_marker_both (p->mark, buffer, | |
2856 | BUF_ZV (XBUFFER (buffer)), | |
2857 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2858 | } | |
2859 | ||
2860 | tem = Fplist_member (contact, QCcoding); | |
2861 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2862 | tem = Qnil; | |
2863 | ||
2864 | val = Qnil; | |
2865 | if (!NILP (tem)) | |
2866 | { | |
2867 | val = XCAR (XCDR (tem)); | |
2868 | if (CONSP (val)) | |
2869 | val = XCAR (val); | |
2870 | } | |
2871 | else if (!NILP (Vcoding_system_for_read)) | |
2872 | val = Vcoding_system_for_read; | |
2873 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) | |
2874 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
2875 | val = Qnil; | |
2876 | p->decode_coding_system = val; | |
2877 | ||
2878 | val = Qnil; | |
2879 | if (!NILP (tem)) | |
2880 | { | |
2881 | val = XCAR (XCDR (tem)); | |
2882 | if (CONSP (val)) | |
2883 | val = XCDR (val); | |
2884 | } | |
2885 | else if (!NILP (Vcoding_system_for_write)) | |
2886 | val = Vcoding_system_for_write; | |
2887 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) | |
2888 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
2889 | val = Qnil; | |
2890 | p->encode_coding_system = val; | |
2891 | ||
2892 | setup_process_coding_systems (proc); | |
2893 | p->decoding_buf = make_uninit_string (0); | |
2894 | p->decoding_carryover = 0; | |
2895 | p->encoding_buf = make_uninit_string (0); | |
2896 | p->inherit_coding_system_flag | |
2897 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2898 | ||
ed3751c8 | 2899 | Fserial_process_configure (nargs, args); |
d888760c GM |
2900 | |
2901 | specpdl_ptr = specpdl + specpdl_count; | |
2902 | ||
2903 | UNGCPRO; | |
2904 | return proc; | |
2905 | } | |
2906 | #endif /* HAVE_SERIAL */ | |
2907 | ||
e690ca94 KS |
2908 | /* Create a network stream/datagram client/server process. Treated |
2909 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2910 | differences are in status display and process deletion. A network |
2911 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2912 | stop/continue it and deactivate/close it via delete-process */ |
2913 | ||
177c0ea7 JB |
2914 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2915 | 0, MANY, 0, | |
e690ca94 KS |
2916 | doc: /* Create and return a network server or client process. |
2917 | ||
fa9d4315 | 2918 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2919 | input and output work as for subprocesses and `delete-process' closes |
2920 | a network connection. However, a network process has no process id, | |
d22426e1 | 2921 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2922 | processes. |
2923 | ||
2924 | Arguments are specified as keyword/argument pairs. The following | |
2925 | arguments are defined: | |
2926 | ||
2927 | :name NAME -- NAME is name for process. It is modified if necessary | |
2928 | to make it unique. | |
2929 | ||
2930 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2931 | with the process. Process output goes at end of that buffer, unless | |
2932 | you specify an output stream or filter function to handle the output. | |
2933 | BUFFER may be also nil, meaning that this process is not associated | |
2934 | with any buffer. | |
2935 | ||
2936 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2937 | address. The symbol `local' specifies the local host. If specified | |
2938 | for a server process, it must be a valid name or address for the local | |
2939 | host, and only clients connecting to that address will be accepted. | |
2940 | ||
2941 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2942 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2943 | a random port number is selected for the server. (If Emacs was |
2944 | compiled with getaddrinfo, a port number can also be specified as a | |
2945 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2946 | |
9057ff80 | 2947 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2948 | stream type connection, `datagram' creates a datagram type connection, |
2949 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2950 | |
e690ca94 | 2951 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2952 | service specified by HOST and SERVICE. The default (nil) is to use |
2953 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2954 | and port number specified by HOST and SERVICE. Other address families | |
2955 | supported are: | |
e690ca94 | 2956 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2957 | ipv4 -- use IPv4 address family only. |
2958 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2959 | |
2960 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2961 | This parameter is ignored when opening a client process. When specified | |
2962 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2963 | ||
2964 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2965 | connection. This parameter is ignored when opening a stream server | |
2966 | process. For a datagram server process, it specifies the initial | |
2967 | setting of the remote datagram address. When specified for a client | |
2968 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2969 | ||
2970 | The format of ADDRESS depends on the address family: | |
2971 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2972 | corresponding to numeric IP address A.B.C.D and port number P. | |
2973 | - A local address is represented as a string with the address in the | |
2974 | local address space. | |
2975 | - An "unsupported family" address is represented by a cons (F . AV) | |
2976 | where F is the family number and AV is a vector containing the socket | |
2977 | address data with one element per address data byte. Do not rely on | |
2978 | this format in portable code, as it may depend on implementation | |
2979 | defined constants, data sizes, and data structure alignment. | |
2980 | ||
6b61353c KH |
2981 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2982 | system used for both reading and writing for this process. If CODING | |
2983 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2984 | ENCODING is used for writing. | |
e690ca94 KS |
2985 | |
2986 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2987 | return without waiting for the connection to complete; instead, the | |
2988 | sentinel function will be called with second arg matching "open" (if | |
2989 | successful) or "failed" when the connect completes. Default is to use | |
2990 | a blocking connect (i.e. wait) for stream type connections. | |
2991 | ||
2992 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2993 | running when Emacs is exited. |
e690ca94 KS |
2994 | |
2995 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2996 | In the stopped state, a server process does not accept new | |
2997 | connections, and a client process does not handle incoming traffic. | |
2998 | The stopped state is cleared by `continue-process' and set by | |
2999 | `stop-process'. | |
3000 | ||
3001 | :filter FILTER -- Install FILTER as the process filter. | |
3002 | ||
7392e23c KS |
3003 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
3004 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 3005 | If this keyword is not specified, the strings are multibyte if |
03f04413 KH |
3006 | `default-enable-multibyte-characters' is non-nil. |
3007 | ||
e690ca94 KS |
3008 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
3009 | ||
3010 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 3011 | function is called when the server accepts a network connection from a |
e690ca94 KS |
3012 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
3013 | is the server process, CLIENT is the new process for the connection, | |
3014 | and MESSAGE is a string. | |
3015 | ||
faa7db08 | 3016 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 3017 | |
6b61353c | 3018 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 3019 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
3020 | If QLEN is an integer, it is used as the max. length of the server's |
3021 | pending connection queue (also known as the backlog); the default | |
3022 | queue length is 5. Default is to create a client process. | |
3023 | ||
3024 | The following network options can be specified for this connection: | |
3025 | ||
3026 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
3027 | :dontroute BOOL -- Only send to directly connected hosts. | |
3028 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
3029 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
3030 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
3031 | :priority INT -- Set protocol defined priority for sent packets. | |
3032 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
3033 | (this is allowed by default for a server process). | |
3034 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
3035 | special privileges on some systems. | |
3036 | ||
3037 | Consult the relevant system programmer's manual pages for more | |
3038 | information on using these options. | |
3039 | ||
3040 | ||
3041 | A server process will listen for and accept connections from clients. | |
3042 | When a client connection is accepted, a new network process is created | |
3043 | for the connection with the following parameters: | |
e690ca94 | 3044 | |
e690ca94 KS |
3045 | - The client's process name is constructed by concatenating the server |
3046 | process' NAME and a client identification string. | |
3047 | - If the FILTER argument is non-nil, the client process will not get a | |
3048 | separate process buffer; otherwise, the client's process buffer is a newly | |
3049 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 3050 | NAME concatenated with the client identification string. |
e690ca94 KS |
3051 | - The connection type and the process filter and sentinel parameters are |
3052 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
3053 | - The client process' contact info is set according to the client's | |
3054 | addressing information (typically an IP address and a port number). | |
faa7db08 | 3055 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
3056 | |
3057 | Notice that the FILTER and SENTINEL args are never used directly by | |
3058 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
3059 | the server process, but via the optional :log function, accepted (and |
3060 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 3061 | |
365aee82 KS |
3062 | The original argument list, modified with the actual connection |
3063 | information, is available via the `process-contact' function. | |
365aee82 | 3064 | |
fa9d4315 | 3065 | usage: (make-network-process &rest ARGS) */) |
5842a27b | 3066 | (int nargs, Lisp_Object *args) |
d0d6b7c5 JB |
3067 | { |
3068 | Lisp_Object proc; | |
e690ca94 KS |
3069 | Lisp_Object contact; |
3070 | struct Lisp_Process *p; | |
70dbdb36 | 3071 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3072 | struct addrinfo ai, *res, *lres; |
e1652a86 KS |
3073 | struct addrinfo hints; |
3074 | char *portstring, portbuf[128]; | |
70dbdb36 | 3075 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
3076 | struct _emacs_addrinfo |
3077 | { | |
3078 | int ai_family; | |
3079 | int ai_socktype; | |
3080 | int ai_protocol; | |
3081 | int ai_addrlen; | |
3082 | struct sockaddr *ai_addr; | |
3083 | struct _emacs_addrinfo *ai_next; | |
3084 | } ai, *res, *lres; | |
418b48fd | 3085 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
3086 | struct sockaddr_in address_in; |
3087 | #ifdef HAVE_LOCAL_SOCKETS | |
3088 | struct sockaddr_un address_un; | |
3089 | #endif | |
3090 | int port; | |
dd2a17ab KS |
3091 | int ret = 0; |
3092 | int xerrno = 0; | |
418b48fd | 3093 | int s = -1, outch, inch; |
e690ca94 | 3094 | struct gcpro gcpro1; |
aed13378 | 3095 | int count = SPECPDL_INDEX (); |
5684cd6e | 3096 | int count1; |
e690ca94 KS |
3097 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
3098 | Lisp_Object tem; | |
3099 | Lisp_Object name, buffer, host, service, address; | |
3100 | Lisp_Object filter, sentinel; | |
3101 | int is_non_blocking_client = 0; | |
6b61353c | 3102 | int is_server = 0, backlog = 5; |
9057ff80 | 3103 | int socktype; |
e690ca94 KS |
3104 | int family = -1; |
3105 | ||
3106 | if (nargs == 0) | |
3107 | return Qnil; | |
dd2a17ab | 3108 | |
e690ca94 KS |
3109 | /* Save arguments for process-contact and clone-process. */ |
3110 | contact = Flist (nargs, args); | |
3111 | GCPRO1 (contact); | |
3112 | ||
bff3ed0a RS |
3113 | #ifdef WINDOWSNT |
3114 | /* Ensure socket support is loaded if available. */ | |
3115 | init_winsock (TRUE); | |
3116 | #endif | |
3117 | ||
9057ff80 KS |
3118 | /* :type TYPE (nil: stream, datagram */ |
3119 | tem = Fplist_get (contact, QCtype); | |
3120 | if (NILP (tem)) | |
3121 | socktype = SOCK_STREAM; | |
3122 | #ifdef DATAGRAM_SOCKETS | |
3123 | else if (EQ (tem, Qdatagram)) | |
3124 | socktype = SOCK_DGRAM; | |
f00c449b SM |
3125 | #endif |
3126 | #ifdef HAVE_SEQPACKET | |
3127 | else if (EQ (tem, Qseqpacket)) | |
3128 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 3129 | #endif |
9057ff80 KS |
3130 | else |
3131 | error ("Unsupported connection type"); | |
e690ca94 KS |
3132 | |
3133 | /* :server BOOL */ | |
3134 | tem = Fplist_get (contact, QCserver); | |
3135 | if (!NILP (tem)) | |
3136 | { | |
75728599 JR |
3137 | /* Don't support network sockets when non-blocking mode is |
3138 | not available, since a blocked Emacs is not useful. */ | |
132d0475 | 3139 | #if !defined(O_NONBLOCK) && !defined(O_NDELAY) |
e690ca94 KS |
3140 | error ("Network servers not supported"); |
3141 | #else | |
3142 | is_server = 1; | |
6b61353c KH |
3143 | if (INTEGERP (tem)) |
3144 | backlog = XINT (tem); | |
e690ca94 KS |
3145 | #endif |
3146 | } | |
3147 | ||
3148 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
3149 | QCaddress = is_server ? QClocal : QCremote; | |
3150 | ||
d7e344cd | 3151 | /* :nowait BOOL */ |
84b31826 | 3152 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
3153 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
3154 | { | |
3155 | #ifndef NON_BLOCKING_CONNECT | |
3156 | error ("Non-blocking connect not supported"); | |
3157 | #else | |
3158 | is_non_blocking_client = 1; | |
3159 | #endif | |
3160 | } | |
3161 | ||
3162 | name = Fplist_get (contact, QCname); | |
3163 | buffer = Fplist_get (contact, QCbuffer); | |
3164 | filter = Fplist_get (contact, QCfilter); | |
3165 | sentinel = Fplist_get (contact, QCsentinel); | |
3166 | ||
b7826503 | 3167 | CHECK_STRING (name); |
e690ca94 | 3168 | |
e690ca94 KS |
3169 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
3170 | ai.ai_socktype = socktype; | |
3171 | ai.ai_protocol = 0; | |
3172 | ai.ai_next = NULL; | |
3173 | res = &ai; | |
a319f7c1 | 3174 | |
e690ca94 KS |
3175 | /* :local ADDRESS or :remote ADDRESS */ |
3176 | address = Fplist_get (contact, QCaddress); | |
3177 | if (!NILP (address)) | |
a319f7c1 | 3178 | { |
e690ca94 KS |
3179 | host = service = Qnil; |
3180 | ||
3181 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
3182 | error ("Malformed :address"); | |
3183 | ai.ai_family = family; | |
3184 | ai.ai_addr = alloca (ai.ai_addrlen); | |
3185 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
3186 | goto open_socket; | |
a319f7c1 | 3187 | } |
e690ca94 KS |
3188 | |
3189 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
3190 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 3191 | if (NILP (tem)) |
a319f7c1 | 3192 | { |
87b6ca8d | 3193 | #if defined(HAVE_GETADDRINFO) && defined(AF_INET6) |
e1652a86 KS |
3194 | family = AF_UNSPEC; |
3195 | #else | |
3196 | family = AF_INET; | |
e690ca94 | 3197 | #endif |
a319f7c1 | 3198 | } |
e1652a86 KS |
3199 | #ifdef HAVE_LOCAL_SOCKETS |
3200 | else if (EQ (tem, Qlocal)) | |
3201 | family = AF_LOCAL; | |
3202 | #endif | |
3203 | #ifdef AF_INET6 | |
3204 | else if (EQ (tem, Qipv6)) | |
3205 | family = AF_INET6; | |
3206 | #endif | |
3207 | else if (EQ (tem, Qipv4)) | |
3208 | family = AF_INET; | |
3209 | else if (INTEGERP (tem)) | |
3210 | family = XINT (tem); | |
3211 | else | |
e690ca94 | 3212 | error ("Unknown address family"); |
e1652a86 | 3213 | |
e690ca94 KS |
3214 | ai.ai_family = family; |
3215 | ||
3216 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3217 | service = Fplist_get (contact, QCservice); | |
3218 | ||
66a9f7f4 SM |
3219 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3220 | host = Fplist_get (contact, QChost); | |
3221 | if (!NILP (host)) | |
3222 | { | |
3223 | if (EQ (host, Qlocal)) | |
3224 | host = build_string ("localhost"); | |
3225 | CHECK_STRING (host); | |
3226 | } | |
3227 | ||
e690ca94 KS |
3228 | #ifdef HAVE_LOCAL_SOCKETS |
3229 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3230 | { |
66a9f7f4 SM |
3231 | if (!NILP (host)) |
3232 | { | |
3233 | message (":family local ignores the :host \"%s\" property", | |
3234 | SDATA (host)); | |
3235 | contact = Fplist_put (contact, QChost, Qnil); | |
3236 | host = Qnil; | |
3237 | } | |
b7826503 | 3238 | CHECK_STRING (service); |
72af86bd | 3239 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3240 | address_un.sun_family = AF_LOCAL; |
d5db4077 | 3241 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
3242 | ai.ai_addr = (struct sockaddr *) &address_un; |
3243 | ai.ai_addrlen = sizeof address_un; | |
3244 | goto open_socket; | |
d0d6b7c5 | 3245 | } |
e690ca94 | 3246 | #endif |
a319f7c1 | 3247 | |
798b64bb KH |
3248 | /* Slow down polling to every ten seconds. |
3249 | Some kernels have a bug which causes retrying connect to fail | |
3250 | after a connect. Polling can interfere with gethostbyname too. */ | |
3251 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3252 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3253 | { |
3254 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3255 | bind_polling_period (10); | |
3256 | } | |
798b64bb KH |
3257 | #endif |
3258 | ||
a319f7c1 | 3259 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3260 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3261 | Otherwise, use getservbyname to lookup the service. */ | |
3262 | if (!NILP (host)) | |
3263 | { | |
3264 | ||
3265 | /* SERVICE can either be a string or int. | |
3266 | Convert to a C string for later use by getaddrinfo. */ | |
3267 | if (EQ (service, Qt)) | |
3268 | portstring = "0"; | |
3269 | else if (INTEGERP (service)) | |
3270 | { | |
3271 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
3272 | portstring = portbuf; | |
3273 | } | |
3274 | else | |
3275 | { | |
3276 | CHECK_STRING (service); | |
d5db4077 | 3277 | portstring = SDATA (service); |
e690ca94 KS |
3278 | } |
3279 | ||
3280 | immediate_quit = 1; | |
3281 | QUIT; | |
3282 | memset (&hints, 0, sizeof (hints)); | |
3283 | hints.ai_flags = 0; | |
e1652a86 | 3284 | hints.ai_family = family; |
e690ca94 KS |
3285 | hints.ai_socktype = socktype; |
3286 | hints.ai_protocol = 0; | |
08116b48 CY |
3287 | |
3288 | #ifdef HAVE_RES_INIT | |
3289 | res_init (); | |
3290 | #endif | |
3291 | ||
d5db4077 | 3292 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 3293 | if (ret) |
f6270f62 | 3294 | #ifdef HAVE_GAI_STRERROR |
ed3751c8 | 3295 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3296 | #else |
63136da6 | 3297 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 3298 | #endif |
e690ca94 | 3299 | immediate_quit = 0; |
a319f7c1 | 3300 | |
e690ca94 KS |
3301 | goto open_socket; |
3302 | } | |
3303 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3304 | |
e690ca94 KS |
3305 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3306 | has been specified (e.g. for a local server process). */ | |
3307 | ||
3308 | if (EQ (service, Qt)) | |
3309 | port = 0; | |
3310 | else if (INTEGERP (service)) | |
3311 | port = htons ((unsigned short) XINT (service)); | |
3312 | else | |
616da37c | 3313 | { |
e690ca94 KS |
3314 | struct servent *svc_info; |
3315 | CHECK_STRING (service); | |
177c0ea7 | 3316 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
3317 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3318 | if (svc_info == 0) | |
d5db4077 | 3319 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3320 | port = svc_info->s_port; |
3321 | } | |
3322 | ||
72af86bd | 3323 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3324 | address_in.sin_family = family; |
3325 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3326 | address_in.sin_port = port; | |
3327 | ||
3328 | #ifndef HAVE_GETADDRINFO | |
3329 | if (!NILP (host)) | |
3330 | { | |
3331 | struct hostent *host_info_ptr; | |
3332 | ||
3333 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 3334 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3335 | immediate_quit = 1; |
3336 | QUIT; | |
08116b48 CY |
3337 | |
3338 | #ifdef HAVE_RES_INIT | |
3339 | res_init (); | |
3340 | #endif | |
3341 | ||
d5db4077 | 3342 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3343 | immediate_quit = 0; |
177c0ea7 | 3344 | |
e690ca94 KS |
3345 | if (host_info_ptr) |
3346 | { | |
72af86bd AS |
3347 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3348 | host_info_ptr->h_length); | |
e690ca94 KS |
3349 | family = host_info_ptr->h_addrtype; |
3350 | address_in.sin_family = family; | |
3351 | } | |
3352 | else | |
3353 | /* Attempt to interpret host as numeric inet address */ | |
3354 | { | |
4624371d | 3355 | unsigned long numeric_addr; |
d5db4077 | 3356 | numeric_addr = inet_addr ((char *) SDATA (host)); |
4624371d | 3357 | if (numeric_addr == -1) |
d5db4077 | 3358 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3359 | |
72af86bd AS |
3360 | memcpy (&address_in.sin_addr, &numeric_addr, |
3361 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3362 | } |
d0d6b7c5 | 3363 | |
e690ca94 | 3364 | } |
dd2a17ab | 3365 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3366 | |
e690ca94 KS |
3367 | ai.ai_family = family; |
3368 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3369 | ai.ai_addrlen = sizeof address_in; | |
3370 | ||
3371 | open_socket: | |
3372 | ||
dd2a17ab | 3373 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3374 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3375 | s = -1; |
457a9bee | 3376 | |
dd2a17ab KS |
3377 | for (lres = res; lres; lres = lres->ai_next) |
3378 | { | |
6b61353c KH |
3379 | int optn, optbits; |
3380 | ||
649dbf36 CY |
3381 | retry_connect: |
3382 | ||
dd2a17ab KS |
3383 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3384 | if (s < 0) | |
3385 | { | |
3386 | xerrno = errno; | |
3387 | continue; | |
3388 | } | |
0f2ee0c1 | 3389 | |
e690ca94 KS |
3390 | #ifdef DATAGRAM_SOCKETS |
3391 | if (!is_server && socktype == SOCK_DGRAM) | |
3392 | break; | |
3393 | #endif /* DATAGRAM_SOCKETS */ | |
3394 | ||
dd2a17ab | 3395 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3396 | if (is_non_blocking_client) |
dd2a17ab KS |
3397 | { |
3398 | #ifdef O_NONBLOCK | |
3399 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3400 | #else | |
3401 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3402 | #endif | |
3403 | if (ret < 0) | |
3404 | { | |
3405 | xerrno = errno; | |
3406 | emacs_close (s); | |
3407 | s = -1; | |
3408 | continue; | |
3409 | } | |
3410 | } | |
3411 | #endif | |
177c0ea7 | 3412 | |
dd2a17ab | 3413 | /* Make us close S if quit. */ |
dd2a17ab KS |
3414 | record_unwind_protect (close_file_unwind, make_number (s)); |
3415 | ||
6b61353c KH |
3416 | /* Parse network options in the arg list. |
3417 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3418 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3419 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3420 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3421 | ||
e690ca94 KS |
3422 | if (is_server) |
3423 | { | |
3424 | /* Configure as a server socket. */ | |
6b61353c KH |
3425 | |
3426 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3427 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3428 | #ifdef HAVE_LOCAL_SOCKETS |
3429 | if (family != AF_LOCAL) | |
3430 | #endif | |
6b61353c KH |
3431 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3432 | { | |
3433 | int optval = 1; | |
3434 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3435 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3436 | } | |
177c0ea7 | 3437 | |
e690ca94 KS |
3438 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3439 | report_file_error ("Cannot bind server socket", Qnil); | |
3440 | ||
3441 | #ifdef HAVE_GETSOCKNAME | |
3442 | if (EQ (service, Qt)) | |
3443 | { | |
3444 | struct sockaddr_in sa1; | |
3445 | int len1 = sizeof (sa1); | |
3446 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3447 | { | |
3448 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3449 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3450 | contact = Fplist_put (contact, QCservice, service); |
3451 | } | |
3452 | } | |
3453 | #endif | |
3454 | ||
84b31826 | 3455 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3456 | report_file_error ("Cannot listen on server socket", Qnil); |
3457 | ||
3458 | break; | |
3459 | } | |
3460 | ||
dd2a17ab KS |
3461 | immediate_quit = 1; |
3462 | QUIT; | |
3463 | ||
dd2a17ab KS |
3464 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3465 | xerrno = errno; | |
3466 | ||
dd2a17ab KS |
3467 | if (ret == 0 || xerrno == EISCONN) |
3468 | { | |
dd2a17ab KS |
3469 | /* The unwind-protect will be discarded afterwards. |
3470 | Likewise for immediate_quit. */ | |
3471 | break; | |
3472 | } | |
3473 | ||
3474 | #ifdef NON_BLOCKING_CONNECT | |
3475 | #ifdef EINPROGRESS | |
e690ca94 | 3476 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3477 | break; |
3478 | #else | |
3479 | #ifdef EWOULDBLOCK | |
e690ca94 | 3480 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3481 | break; |
3482 | #endif | |
3483 | #endif | |
3484 | #endif | |
649dbf36 CY |
3485 | |
3486 | #ifndef WINDOWSNT | |
cd591dbc HE |
3487 | if (xerrno == EINTR) |
3488 | { | |
3489 | /* Unlike most other syscalls connect() cannot be called | |
3490 | again. (That would return EALREADY.) The proper way to | |
3491 | wait for completion is select(). */ | |
649dbf36 | 3492 | int sc, len; |
cd591dbc HE |
3493 | SELECT_TYPE fdset; |
3494 | retry_select: | |
3495 | FD_ZERO (&fdset); | |
3496 | FD_SET (s, &fdset); | |
3497 | QUIT; | |
3498 | sc = select (s + 1, (SELECT_TYPE *)0, &fdset, (SELECT_TYPE *)0, | |
3499 | (EMACS_TIME *)0); | |
3500 | if (sc == -1) | |
3501 | { | |
649dbf36 | 3502 | if (errno == EINTR) |
cd591dbc | 3503 | goto retry_select; |
649dbf36 | 3504 | else |
cd591dbc HE |
3505 | report_file_error ("select failed", Qnil); |
3506 | } | |
3507 | eassert (sc > 0); | |
649dbf36 CY |
3508 | |
3509 | len = sizeof xerrno; | |
3510 | eassert (FD_ISSET (s, &fdset)); | |
3511 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3512 | report_file_error ("getsockopt failed", Qnil); | |
3513 | if (xerrno) | |
3514 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3515 | else | |
3516 | break; | |
cd591dbc | 3517 | } |
649dbf36 | 3518 | #endif /* !WINDOWSNT */ |
e333e864 | 3519 | |
0f2ee0c1 RS |
3520 | immediate_quit = 0; |
3521 | ||
dd2a17ab | 3522 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3523 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3524 | emacs_close (s); |
dd2a17ab | 3525 | s = -1; |
649dbf36 CY |
3526 | |
3527 | #ifdef WINDOWSNT | |
3528 | if (xerrno == EINTR) | |
3529 | goto retry_connect; | |
3530 | #endif | |
dd2a17ab | 3531 | } |
457a9bee | 3532 | |
e690ca94 KS |
3533 | if (s >= 0) |
3534 | { | |
3535 | #ifdef DATAGRAM_SOCKETS | |
3536 | if (socktype == SOCK_DGRAM) | |
3537 | { | |
3538 | if (datagram_address[s].sa) | |
3539 | abort (); | |
3540 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3541 | datagram_address[s].len = lres->ai_addrlen; | |
3542 | if (is_server) | |
3543 | { | |
3544 | Lisp_Object remote; | |
72af86bd | 3545 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3546 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3547 | { | |
3548 | int rfamily, rlen; | |
3549 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3550 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3551 | conv_lisp_to_sockaddr (rfamily, remote, | |
3552 | datagram_address[s].sa, rlen); | |
3553 | } | |
3554 | } | |
3555 | else | |
72af86bd | 3556 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3557 | } |
3558 | #endif | |
177c0ea7 | 3559 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3560 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3561 | #ifdef HAVE_GETSOCKNAME |
3562 | if (!is_server) | |
3563 | { | |
3564 | struct sockaddr_in sa1; | |
3565 | int len1 = sizeof (sa1); | |
3566 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3567 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3568 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3569 | } |
3570 | #endif | |
e690ca94 KS |
3571 | } |
3572 | ||
54b3b62f YM |
3573 | immediate_quit = 0; |
3574 | ||
dd2a17ab | 3575 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3576 | if (res != &ai) |
54b3b62f YM |
3577 | { |
3578 | BLOCK_INPUT; | |
3579 | freeaddrinfo (res); | |
3580 | UNBLOCK_INPUT; | |
3581 | } | |
dd2a17ab KS |
3582 | #endif |
3583 | ||
e690ca94 KS |
3584 | /* Discard the unwind protect for closing S, if any. */ |
3585 | specpdl_ptr = specpdl + count1; | |
3586 | ||
3587 | /* Unwind bind_polling_period and request_sigio. */ | |
3588 | unbind_to (count, Qnil); | |
3589 | ||
dd2a17ab KS |
3590 | if (s < 0) |
3591 | { | |
dd2a17ab KS |
3592 | /* If non-blocking got this far - and failed - assume non-blocking is |
3593 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3594 | the normal blocking calls to open-network-stream handles this error |
3595 | better. */ | |
3596 | if (is_non_blocking_client) | |
dd2a17ab | 3597 | return Qnil; |
dd2a17ab | 3598 | |
d0d6b7c5 | 3599 | errno = xerrno; |
e690ca94 KS |
3600 | if (is_server) |
3601 | report_file_error ("make server process failed", contact); | |
3602 | else | |
3603 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3604 | } |
44ade2e9 | 3605 | |
d0d6b7c5 | 3606 | inch = s; |
59f23005 | 3607 | outch = s; |
d0d6b7c5 JB |
3608 | |
3609 | if (!NILP (buffer)) | |
3610 | buffer = Fget_buffer_create (buffer); | |
3611 | proc = make_process (name); | |
3612 | ||
3613 | chan_process[inch] = proc; | |
3614 | ||
3615 | #ifdef O_NONBLOCK | |
3616 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3617 | #else | |
3618 | #ifdef O_NDELAY | |
3619 | fcntl (inch, F_SETFL, O_NDELAY); | |
3620 | #endif | |
3621 | #endif | |
3622 | ||
e690ca94 KS |
3623 | p = XPROCESS (proc); |
3624 | ||
3625 | p->childp = contact; | |
faa7db08 | 3626 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
d888760c | 3627 | p->type = Qnetwork; |
177c0ea7 | 3628 | |
e690ca94 KS |
3629 | p->buffer = buffer; |
3630 | p->sentinel = sentinel; | |
3631 | p->filter = filter; | |
3632 | p->log = Fplist_get (contact, QClog); | |
3633 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
60f0fb11 | 3634 | p->kill_without_query = 1; |
e690ca94 KS |
3635 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
3636 | p->command = Qt; | |
6bfd98e7 | 3637 | p->pid = 0; |
60f0fb11 SM |
3638 | p->infd = inch; |
3639 | p->outfd = outch; | |
84b31826 | 3640 | if (is_server && socktype != SOCK_DGRAM) |
e690ca94 | 3641 | p->status = Qlisten; |
dd2a17ab | 3642 | |
f523e0c3 SM |
3643 | /* Make the process marker point into the process buffer (if any). */ |
3644 | if (BUFFERP (buffer)) | |
3645 | set_marker_both (p->mark, buffer, | |
3646 | BUF_ZV (XBUFFER (buffer)), | |
3647 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3648 | ||
dd2a17ab | 3649 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3650 | if (is_non_blocking_client) |
dd2a17ab KS |
3651 | { |
3652 | /* We may get here if connect did succeed immediately. However, | |
3653 | in that case, we still need to signal this like a non-blocking | |
3654 | connection. */ | |
e690ca94 | 3655 | p->status = Qconnect; |
dd2a17ab KS |
3656 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3657 | { | |
3658 | FD_SET (inch, &connect_wait_mask); | |
3659 | num_pending_connects++; | |
3660 | } | |
3661 | } | |
3662 | else | |
3663 | #endif | |
e690ca94 KS |
3664 | /* A server may have a client filter setting of Qt, but it must |
3665 | still listen for incoming connects unless it is stopped. */ | |
3666 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3667 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3668 | { |
3669 | FD_SET (inch, &input_wait_mask); | |
3670 | FD_SET (inch, &non_keyboard_wait_mask); | |
3671 | } | |
3672 | ||
7d0e672e RS |
3673 | if (inch > max_process_desc) |
3674 | max_process_desc = inch; | |
d0d6b7c5 | 3675 | |
e690ca94 KS |
3676 | tem = Fplist_member (contact, QCcoding); |
3677 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3678 | tem = Qnil; /* No error message (too late!). */ | |
3679 | ||
67918941 RS |
3680 | { |
3681 | /* Setup coding systems for communicating with the network stream. */ | |
3682 | struct gcpro gcpro1; | |
3683 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3684 | Lisp_Object coding_systems = Qt; | |
3685 | Lisp_Object args[5], val; | |
3686 | ||
e690ca94 | 3687 | if (!NILP (tem)) |
6b61353c KH |
3688 | { |
3689 | val = XCAR (XCDR (tem)); | |
3690 | if (CONSP (val)) | |
3691 | val = XCAR (val); | |
3692 | } | |
e690ca94 | 3693 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3694 | val = Vcoding_system_for_read; |
41d03b9a GM |
3695 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3696 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3697 | /* We dare not decode end-of-line format by setting VAL to |
3698 | Qraw_text, because the existing Emacs Lisp libraries | |
3699 | assume that they receive bare code including a sequene of | |
3700 | CR LF. */ | |
3701 | val = Qnil; | |
3702 | else | |
3703 | { | |
991234f0 KS |
3704 | if (NILP (host) || NILP (service)) |
3705 | coding_systems = Qnil; | |
3706 | else | |
3707 | { | |
3708 | args[0] = Qopen_network_stream, args[1] = name, | |
3709 | args[2] = buffer, args[3] = host, args[4] = service; | |
3710 | GCPRO1 (proc); | |
3711 | coding_systems = Ffind_operation_coding_system (5, args); | |
3712 | UNGCPRO; | |
3713 | } | |
67918941 | 3714 | if (CONSP (coding_systems)) |
70949dac | 3715 | val = XCAR (coding_systems); |
67918941 | 3716 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3717 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3718 | else |
3719 | val = Qnil; | |
3720 | } | |
e690ca94 | 3721 | p->decode_coding_system = val; |
0fa1789e | 3722 | |
e690ca94 | 3723 | if (!NILP (tem)) |
6b61353c KH |
3724 | { |
3725 | val = XCAR (XCDR (tem)); | |
3726 | if (CONSP (val)) | |
3727 | val = XCDR (val); | |
3728 | } | |
e690ca94 | 3729 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3730 | val = Vcoding_system_for_write; |
3731 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3732 | val = Qnil; | |
3733 | else | |
3734 | { | |
3735 | if (EQ (coding_systems, Qt)) | |
3736 | { | |
991234f0 KS |
3737 | if (NILP (host) || NILP (service)) |
3738 | coding_systems = Qnil; | |
3739 | else | |
3740 | { | |
3741 | args[0] = Qopen_network_stream, args[1] = name, | |
3742 | args[2] = buffer, args[3] = host, args[4] = service; | |
3743 | GCPRO1 (proc); | |
3744 | coding_systems = Ffind_operation_coding_system (5, args); | |
3745 | UNGCPRO; | |
3746 | } | |
67918941 RS |
3747 | } |
3748 | if (CONSP (coding_systems)) | |
70949dac | 3749 | val = XCDR (coding_systems); |
67918941 | 3750 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3751 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3752 | else |
3753 | val = Qnil; | |
3754 | } | |
e690ca94 | 3755 | p->encode_coding_system = val; |
67918941 | 3756 | } |
03f04413 | 3757 | setup_process_coding_systems (proc); |
0fa1789e | 3758 | |
e690ca94 | 3759 | p->decoding_buf = make_uninit_string (0); |
60f0fb11 | 3760 | p->decoding_carryover = 0; |
e690ca94 | 3761 | p->encoding_buf = make_uninit_string (0); |
0fa1789e | 3762 | |
e690ca94 | 3763 | p->inherit_coding_system_flag |
e6fca843 | 3764 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3765 | |
d0d6b7c5 JB |
3766 | UNGCPRO; |
3767 | return proc; | |
3768 | } | |
3769 | #endif /* HAVE_SOCKETS */ | |
3770 | ||
6b61353c KH |
3771 | \f |
3772 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
3773 | ||
3774 | #ifdef SIOCGIFCONF | |
3775 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3776 | doc: /* Return an alist of all network interfaces and their network address. | |
3777 | Each element is a cons, the car of which is a string containing the | |
3778 | interface name, and the cdr is the network address in internal | |
3779 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3780 | (void) |
6b61353c KH |
3781 | { |
3782 | struct ifconf ifconf; | |
3783 | struct ifreq *ifreqs = NULL; | |
3784 | int ifaces = 0; | |
3785 | int buf_size, s; | |
3786 | Lisp_Object res; | |
3787 | ||
3788 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3789 | if (s < 0) | |
3790 | return Qnil; | |
3791 | ||
3792 | again: | |
3793 | ifaces += 25; | |
ed3751c8 | 3794 | buf_size = ifaces * sizeof (ifreqs[0]); |
6b61353c KH |
3795 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); |
3796 | if (!ifreqs) | |
3797 | { | |
3798 | close (s); | |
3799 | return Qnil; | |
3800 | } | |
3801 | ||
3802 | ifconf.ifc_len = buf_size; | |
3803 | ifconf.ifc_req = ifreqs; | |
3804 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3805 | { | |
3806 | close (s); | |
3807 | return Qnil; | |
3808 | } | |
3809 | ||
3810 | if (ifconf.ifc_len == buf_size) | |
3811 | goto again; | |
3812 | ||
3813 | close (s); | |
3814 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3815 | ||
3816 | res = Qnil; | |
3817 | while (--ifaces >= 0) | |
3818 | { | |
3819 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3820 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3821 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3822 | continue; | |
72af86bd | 3823 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3824 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3825 | res = Fcons (Fcons (build_string (namebuf), | |
3826 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3827 | sizeof (struct sockaddr))), | |
3828 | res); | |
3829 | } | |
3830 | ||
3831 | return res; | |
3832 | } | |
3833 | #endif /* SIOCGIFCONF */ | |
3834 | ||
3835 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3836 | ||
3837 | struct ifflag_def { | |
3838 | int flag_bit; | |
91433552 | 3839 | const char *flag_sym; |
6b61353c KH |
3840 | }; |
3841 | ||
91433552 | 3842 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3843 | #ifdef IFF_UP |
3844 | { IFF_UP, "up" }, | |
3845 | #endif | |
3846 | #ifdef IFF_BROADCAST | |
3847 | { IFF_BROADCAST, "broadcast" }, | |
3848 | #endif | |
3849 | #ifdef IFF_DEBUG | |
3850 | { IFF_DEBUG, "debug" }, | |
3851 | #endif | |
3852 | #ifdef IFF_LOOPBACK | |
3853 | { IFF_LOOPBACK, "loopback" }, | |
3854 | #endif | |
3855 | #ifdef IFF_POINTOPOINT | |
3856 | { IFF_POINTOPOINT, "pointopoint" }, | |
3857 | #endif | |
3858 | #ifdef IFF_RUNNING | |
3859 | { IFF_RUNNING, "running" }, | |
3860 | #endif | |
3861 | #ifdef IFF_NOARP | |
3862 | { IFF_NOARP, "noarp" }, | |
3863 | #endif | |
3864 | #ifdef IFF_PROMISC | |
3865 | { IFF_PROMISC, "promisc" }, | |
3866 | #endif | |
3867 | #ifdef IFF_NOTRAILERS | |
3868 | { IFF_NOTRAILERS, "notrailers" }, | |
3869 | #endif | |
3870 | #ifdef IFF_ALLMULTI | |
3871 | { IFF_ALLMULTI, "allmulti" }, | |
3872 | #endif | |
3873 | #ifdef IFF_MASTER | |
3874 | { IFF_MASTER, "master" }, | |
3875 | #endif | |
3876 | #ifdef IFF_SLAVE | |
3877 | { IFF_SLAVE, "slave" }, | |
3878 | #endif | |
3879 | #ifdef IFF_MULTICAST | |
3880 | { IFF_MULTICAST, "multicast" }, | |
3881 | #endif | |
3882 | #ifdef IFF_PORTSEL | |
3883 | { IFF_PORTSEL, "portsel" }, | |
3884 | #endif | |
3885 | #ifdef IFF_AUTOMEDIA | |
3886 | { IFF_AUTOMEDIA, "automedia" }, | |
3887 | #endif | |
3888 | #ifdef IFF_DYNAMIC | |
3889 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3890 | #endif |
2026418c YM |
3891 | #ifdef IFF_OACTIVE |
3892 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3893 | #endif |
3894 | #ifdef IFF_SIMPLEX | |
3895 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3896 | #endif | |
3897 | #ifdef IFF_LINK0 | |
3898 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3899 | #endif | |
3900 | #ifdef IFF_LINK1 | |
3901 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3902 | #endif | |
3903 | #ifdef IFF_LINK2 | |
3904 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3905 | #endif |
3906 | { 0, 0 } | |
3907 | }; | |
3908 | ||
3909 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3910 | doc: /* Return information about network interface named IFNAME. | |
3911 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3912 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3913 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3914 | FLAGS is the current flags of the interface. */) | |
5842a27b | 3915 | (Lisp_Object ifname) |
6b61353c KH |
3916 | { |
3917 | struct ifreq rq; | |
3918 | Lisp_Object res = Qnil; | |
3919 | Lisp_Object elt; | |
3920 | int s; | |
3921 | int any = 0; | |
3922 | ||
3923 | CHECK_STRING (ifname); | |
3924 | ||
72af86bd | 3925 | memset (rq.ifr_name, 0, sizeof rq.ifr_name); |
6b61353c KH |
3926 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); |
3927 | ||
3928 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3929 | if (s < 0) | |
3930 | return Qnil; | |
3931 | ||
3932 | elt = Qnil; | |
3933 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) | |
3934 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) | |
3935 | { | |
3936 | int flags = rq.ifr_flags; | |
91433552 | 3937 | const struct ifflag_def *fp; |
6b61353c KH |
3938 | int fnum; |
3939 | ||
3940 | any++; | |
82a80058 | 3941 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3942 | { |
3943 | if (flags & fp->flag_bit) | |
3944 | { | |
3945 | elt = Fcons (intern (fp->flag_sym), elt); | |
3946 | flags -= fp->flag_bit; | |
3947 | } | |
3948 | } | |
3949 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3950 | { | |
3951 | if (flags & (1 << fnum)) | |
3952 | { | |
3953 | elt = Fcons (make_number (fnum), elt); | |
3954 | } | |
3955 | } | |
3956 | } | |
3957 | #endif | |
3958 | res = Fcons (elt, res); | |
3959 | ||
3960 | elt = Qnil; | |
3961 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) | |
3962 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) | |
3963 | { | |
3964 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3965 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3966 | int n; | |
3967 | ||
3968 | any++; | |
3969 | for (n = 0; n < 6; n++) | |
3970 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3971 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3972 | } | |
3973 | #endif | |
3974 | res = Fcons (elt, res); | |
3975 | ||
3976 | elt = Qnil; | |
2026418c | 3977 | #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3978 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3979 | { | |
3980 | any++; | |
2026418c | 3981 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3982 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3983 | #else |
3984 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3985 | #endif | |
6b61353c KH |
3986 | } |
3987 | #endif | |
3988 | res = Fcons (elt, res); | |
3989 | ||
3990 | elt = Qnil; | |
3991 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) | |
3992 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) | |
3993 | { | |
3994 | any++; | |
3995 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3996 | } | |
3997 | #endif | |
3998 | res = Fcons (elt, res); | |
3999 | ||
4000 | elt = Qnil; | |
4001 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) | |
4002 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) | |
4003 | { | |
4004 | any++; | |
4005 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
4006 | } | |
4007 | #endif | |
4008 | res = Fcons (elt, res); | |
4009 | ||
4010 | close (s); | |
4011 | ||
4012 | return any ? res : Qnil; | |
4013 | } | |
4014 | #endif | |
4015 | #endif /* HAVE_SOCKETS */ | |
4016 | ||
04391069 RS |
4017 | /* Turn off input and output for process PROC. */ |
4018 | ||
6b53bb85 | 4019 | void |
d3da34e0 | 4020 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
4021 | { |
4022 | register int inchannel, outchannel; | |
4023 | register struct Lisp_Process *p = XPROCESS (proc); | |
4024 | ||
60f0fb11 SM |
4025 | inchannel = p->infd; |
4026 | outchannel = p->outfd; | |
d0d6b7c5 | 4027 | |
6b61353c | 4028 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 4029 | if (p->read_output_delay > 0) |
6b61353c KH |
4030 | { |
4031 | if (--process_output_delay_count < 0) | |
4032 | process_output_delay_count = 0; | |
60f0fb11 SM |
4033 | p->read_output_delay = 0; |
4034 | p->read_output_skip = 0; | |
6b61353c KH |
4035 | } |
4036 | #endif | |
f3d9532b | 4037 | |
a9f2c884 | 4038 | if (inchannel >= 0) |
d0d6b7c5 JB |
4039 | { |
4040 | /* Beware SIGCHLD hereabouts. */ | |
4041 | flush_pending_output (inchannel); | |
68c45bf0 | 4042 | emacs_close (inchannel); |
a9f2c884 | 4043 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 4044 | emacs_close (outchannel); |
d0d6b7c5 | 4045 | |
60f0fb11 SM |
4046 | p->infd = -1; |
4047 | p->outfd = -1; | |
e690ca94 KS |
4048 | #ifdef DATAGRAM_SOCKETS |
4049 | if (DATAGRAM_CHAN_P (inchannel)) | |
4050 | { | |
4051 | xfree (datagram_address[inchannel].sa); | |
4052 | datagram_address[inchannel].sa = 0; | |
4053 | datagram_address[inchannel].len = 0; | |
4054 | } | |
4055 | #endif | |
d0d6b7c5 JB |
4056 | chan_process[inchannel] = Qnil; |
4057 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 4058 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 4059 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4060 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
4061 | { | |
4062 | FD_CLR (inchannel, &connect_wait_mask); | |
4063 | if (--num_pending_connects < 0) | |
4064 | abort (); | |
4065 | } | |
bad49fc7 | 4066 | #endif |
7d0e672e RS |
4067 | if (inchannel == max_process_desc) |
4068 | { | |
4069 | int i; | |
4070 | /* We just closed the highest-numbered process input descriptor, | |
4071 | so recompute the highest-numbered one now. */ | |
4072 | max_process_desc = 0; | |
4073 | for (i = 0; i < MAXDESC; i++) | |
4074 | if (!NILP (chan_process[i])) | |
4075 | max_process_desc = i; | |
4076 | } | |
d0d6b7c5 JB |
4077 | } |
4078 | } | |
4079 | ||
d0d6b7c5 JB |
4080 | \f |
4081 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 4082 | 0, 4, 0, |
fdb82f93 PJ |
4083 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
4084 | It is read into the process' buffers or given to their filter functions. | |
4085 | Non-nil arg PROCESS means do not return until some output has been received | |
4086 | from PROCESS. | |
5088da42 | 4087 | |
2a7bb882 MR |
4088 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
4089 | and milliseconds to wait; return after that much time whether or not | |
4090 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 4091 | it specifies a fractional number of seconds to wait. |
891bd142 | 4092 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 4093 | |
107ed38d KS |
4094 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
4095 | from PROCESS, suspending reading output from other processes. | |
4096 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 4097 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 4098 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 4099 | { |
5088da42 | 4100 | int secs, usecs = 0; |
d0d6b7c5 | 4101 | |
0748d150 | 4102 | if (! NILP (process)) |
b7826503 | 4103 | CHECK_PROCESS (process); |
107ed38d KS |
4104 | else |
4105 | just_this_one = Qnil; | |
0748d150 | 4106 | |
891bd142 SM |
4107 | if (!NILP (millisec)) |
4108 | { /* Obsolete calling convention using integers rather than floats. */ | |
4109 | CHECK_NUMBER (millisec); | |
4110 | if (NILP (seconds)) | |
4111 | seconds = make_float (XINT (millisec) / 1000.0); | |
4112 | else | |
4113 | { | |
4114 | CHECK_NUMBER (seconds); | |
4115 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
4116 | } | |
4117 | } | |
4118 | ||
5088da42 | 4119 | if (!NILP (seconds)) |
d0d6b7c5 | 4120 | { |
5088da42 KS |
4121 | if (INTEGERP (seconds)) |
4122 | secs = XINT (seconds); | |
4123 | else if (FLOATP (seconds)) | |
4124 | { | |
4125 | double timeout = XFLOAT_DATA (seconds); | |
4126 | secs = (int) timeout; | |
4127 | usecs = (int) ((timeout - (double) secs) * 1000000); | |
4128 | } | |
4129 | else | |
4130 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 4131 | |
5088da42 KS |
4132 | if (secs < 0 || (secs == 0 && usecs == 0)) |
4133 | secs = -1, usecs = 0; | |
d0d6b7c5 JB |
4134 | } |
4135 | else | |
5088da42 | 4136 | secs = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
4137 | |
4138 | return | |
5088da42 | 4139 | (wait_reading_process_output (secs, usecs, 0, 0, |
214d6069 KS |
4140 | Qnil, |
4141 | !NILP (process) ? XPROCESS (process) : NULL, | |
4142 | NILP (just_this_one) ? 0 : | |
4143 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
4144 | ? Qt : Qnil); |
4145 | } | |
4146 | ||
e690ca94 KS |
4147 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4148 | ||
4149 | static int connect_counter = 0; | |
4150 | ||
4151 | static void | |
d3da34e0 | 4152 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4153 | { |
4154 | Lisp_Object proc, caller, name, buffer; | |
4155 | Lisp_Object contact, host, service; | |
4156 | struct Lisp_Process *ps= XPROCESS (server); | |
4157 | struct Lisp_Process *p; | |
4158 | int s; | |
4159 | union u_sockaddr { | |
4160 | struct sockaddr sa; | |
4161 | struct sockaddr_in in; | |
e1652a86 KS |
4162 | #ifdef AF_INET6 |
4163 | struct sockaddr_in6 in6; | |
4164 | #endif | |
e690ca94 KS |
4165 | #ifdef HAVE_LOCAL_SOCKETS |
4166 | struct sockaddr_un un; | |
4167 | #endif | |
4168 | } saddr; | |
4169 | int len = sizeof saddr; | |
4170 | ||
4171 | s = accept (channel, &saddr.sa, &len); | |
4172 | ||
4173 | if (s < 0) | |
4174 | { | |
4175 | int code = errno; | |
4176 | ||
4177 | if (code == EAGAIN) | |
4178 | return; | |
4179 | #ifdef EWOULDBLOCK | |
4180 | if (code == EWOULDBLOCK) | |
4181 | return; | |
4182 | #endif | |
4183 | ||
4184 | if (!NILP (ps->log)) | |
4185 | call3 (ps->log, server, Qnil, | |
4186 | concat3 (build_string ("accept failed with code"), | |
4187 | Fnumber_to_string (make_number (code)), | |
4188 | build_string ("\n"))); | |
4189 | return; | |
4190 | } | |
4191 | ||
4192 | connect_counter++; | |
4193 | ||
4194 | /* Setup a new process to handle the connection. */ | |
4195 | ||
4196 | /* Generate a unique identification of the caller, and build contact | |
4197 | information for this process. */ | |
4198 | host = Qt; | |
4199 | service = Qnil; | |
4200 | switch (saddr.sa.sa_family) | |
4201 | { | |
4202 | case AF_INET: | |
4203 | { | |
4204 | Lisp_Object args[5]; | |
4205 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4206 | args[0] = build_string ("%d.%d.%d.%d"); | |
4207 | args[1] = make_number (*ip++); | |
4208 | args[2] = make_number (*ip++); | |
4209 | args[3] = make_number (*ip++); | |
4210 | args[4] = make_number (*ip++); | |
4211 | host = Fformat (5, args); | |
4212 | service = make_number (ntohs (saddr.in.sin_port)); | |
4213 | ||
4214 | args[0] = build_string (" <%s:%d>"); | |
4215 | args[1] = host; | |
4216 | args[2] = service; | |
4217 | caller = Fformat (3, args); | |
4218 | } | |
4219 | break; | |
4220 | ||
e1652a86 KS |
4221 | #ifdef AF_INET6 |
4222 | case AF_INET6: | |
4223 | { | |
4224 | Lisp_Object args[9]; | |
4225 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4226 | int i; | |
4227 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4228 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4229 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4230 | host = Fformat (9, args); |
4231 | service = make_number (ntohs (saddr.in.sin_port)); | |
4232 | ||
4233 | args[0] = build_string (" <[%s]:%d>"); | |
4234 | args[1] = host; | |
4235 | args[2] = service; | |
4236 | caller = Fformat (3, args); | |
4237 | } | |
4238 | break; | |
4239 | #endif | |
4240 | ||
e690ca94 KS |
4241 | #ifdef HAVE_LOCAL_SOCKETS |
4242 | case AF_LOCAL: | |
4243 | #endif | |
4244 | default: | |
4245 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4246 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4247 | break; |
4248 | } | |
4249 | ||
4250 | /* Create a new buffer name for this process if it doesn't have a | |
4251 | filter. The new buffer name is based on the buffer name or | |
4252 | process name of the server process concatenated with the caller | |
4253 | identification. */ | |
4254 | ||
4255 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4256 | buffer = Qnil; | |
4257 | else | |
4258 | { | |
4259 | buffer = ps->buffer; | |
4260 | if (!NILP (buffer)) | |
4261 | buffer = Fbuffer_name (buffer); | |
4262 | else | |
4263 | buffer = ps->name; | |
4264 | if (!NILP (buffer)) | |
4265 | { | |
4266 | buffer = concat2 (buffer, caller); | |
4267 | buffer = Fget_buffer_create (buffer); | |
4268 | } | |
4269 | } | |
4270 | ||
4271 | /* Generate a unique name for the new server process. Combine the | |
4272 | server process name with the caller identification. */ | |
4273 | ||
4274 | name = concat2 (ps->name, caller); | |
4275 | proc = make_process (name); | |
4276 | ||
4277 | chan_process[s] = proc; | |
4278 | ||
4279 | #ifdef O_NONBLOCK | |
4280 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4281 | #else | |
4282 | #ifdef O_NDELAY | |
4283 | fcntl (s, F_SETFL, O_NDELAY); | |
4284 | #endif | |
4285 | #endif | |
4286 | ||
4287 | p = XPROCESS (proc); | |
4288 | ||
4289 | /* Build new contact information for this setup. */ | |
4290 | contact = Fcopy_sequence (ps->childp); | |
4291 | contact = Fplist_put (contact, QCserver, Qnil); | |
4292 | contact = Fplist_put (contact, QChost, host); | |
4293 | if (!NILP (service)) | |
4294 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4295 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4296 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4297 | #ifdef HAVE_GETSOCKNAME | |
4298 | len = sizeof saddr; | |
2185db04 | 4299 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4300 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4301 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4302 | #endif | |
4303 | ||
4304 | p->childp = contact; | |
faa7db08 | 4305 | p->plist = Fcopy_sequence (ps->plist); |
d888760c | 4306 | p->type = Qnetwork; |
ac4a7584 | 4307 | |
e690ca94 KS |
4308 | p->buffer = buffer; |
4309 | p->sentinel = ps->sentinel; | |
4310 | p->filter = ps->filter; | |
4311 | p->command = Qnil; | |
6bfd98e7 | 4312 | p->pid = 0; |
60f0fb11 SM |
4313 | p->infd = s; |
4314 | p->outfd = s; | |
e690ca94 KS |
4315 | p->status = Qrun; |
4316 | ||
4317 | /* Client processes for accepted connections are not stopped initially. */ | |
4318 | if (!EQ (p->filter, Qt)) | |
4319 | { | |
4320 | FD_SET (s, &input_wait_mask); | |
4321 | FD_SET (s, &non_keyboard_wait_mask); | |
4322 | } | |
4323 | ||
4324 | if (s > max_process_desc) | |
4325 | max_process_desc = s; | |
4326 | ||
177c0ea7 | 4327 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4328 | This seems to be the proper thing to do, as the coding system |
4329 | of the new process should reflect the settings at the time the | |
4330 | server socket was opened; not the current settings. */ | |
4331 | ||
4332 | p->decode_coding_system = ps->decode_coding_system; | |
4333 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4334 | setup_process_coding_systems (proc); |
e690ca94 KS |
4335 | |
4336 | p->decoding_buf = make_uninit_string (0); | |
60f0fb11 | 4337 | p->decoding_carryover = 0; |
e690ca94 | 4338 | p->encoding_buf = make_uninit_string (0); |
e690ca94 KS |
4339 | |
4340 | p->inherit_coding_system_flag | |
60f0fb11 | 4341 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 KS |
4342 | |
4343 | if (!NILP (ps->log)) | |
4344 | call3 (ps->log, server, proc, | |
4345 | concat3 (build_string ("accept from "), | |
4346 | (STRINGP (host) ? host : build_string ("-")), | |
4347 | build_string ("\n"))); | |
4348 | ||
bed9664a | 4349 | if (!NILP (p->sentinel)) |
177c0ea7 | 4350 | exec_sentinel (proc, |
e690ca94 KS |
4351 | concat3 (build_string ("open from "), |
4352 | (STRINGP (host) ? host : build_string ("-")), | |
4353 | build_string ("\n"))); | |
4354 | } | |
4355 | ||
d0d6b7c5 JB |
4356 | /* This variable is different from waiting_for_input in keyboard.c. |
4357 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4358 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4359 | for user-input when that process-filter was called. |
4360 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4361 | lisp code is being evalled. |
4362 | This is also used in record_asynch_buffer_change. | |
4363 | For that purpose, this must be 0 | |
214d6069 | 4364 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4365 | static int waiting_for_user_input_p; |
4366 | ||
2beb96f9 | 4367 | static Lisp_Object |
d3da34e0 | 4368 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4369 | { |
4370 | waiting_for_user_input_p = XINT (data); | |
4371 | return Qnil; | |
4372 | } | |
4373 | ||
c573ae8e | 4374 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4375 | static void |
d3da34e0 | 4376 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4377 | { |
4378 | } | |
4379 | ||
e1e541bd | 4380 | /* Use a wrapper around select to work around a bug in gdb 5.3. |
96c834b6 | 4381 | Normally, the wrapper is optimized away by inlining. |
e1e541bd KS |
4382 | |
4383 | If emacs is stopped inside select, the gdb backtrace doesn't | |
4384 | show the function which called select, so it is practically | |
4385 | impossible to step through wait_reading_process_output. */ | |
4386 | ||
4387 | #ifndef select | |
4388 | static INLINE int | |
d3da34e0 | 4389 | select_wrapper (int n, fd_set *rfd, fd_set *wfd, fd_set *xfd, struct timeval *tmo) |
e1e541bd KS |
4390 | { |
4391 | return select (n, rfd, wfd, xfd, tmo); | |
4392 | } | |
4393 | #define select select_wrapper | |
4394 | #endif | |
4395 | ||
d0d6b7c5 JB |
4396 | /* Read and dispose of subprocess output while waiting for timeout to |
4397 | elapse and/or keyboard input to be available. | |
4398 | ||
de6fd4b9 | 4399 | TIME_LIMIT is: |
d0d6b7c5 JB |
4400 | timeout in seconds, or |
4401 | zero for no limit, or | |
4402 | -1 means gobble data immediately available but don't wait for any. | |
4403 | ||
de6fd4b9 RS |
4404 | MICROSECS is: |
4405 | an additional duration to wait, measured in microseconds. | |
4406 | If this is nonzero and time_limit is 0, then the timeout | |
4407 | consists of MICROSECS only. | |
6e4f3667 | 4408 | |
de6fd4b9 | 4409 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4410 | 0 to ignore keyboard input, or |
4411 | 1 to return when input is available, or | |
84aa3ace | 4412 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4413 | the quit handler, or |
d0d6b7c5 | 4414 | |
de6fd4b9 | 4415 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4416 | output that arrives. |
d0d6b7c5 | 4417 | |
b89a415a KS |
4418 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4419 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4420 | |
b89a415a | 4421 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4422 | process. The return value is true if we read some input from |
b89a415a KS |
4423 | that process. |
4424 | ||
4425 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4426 | (suspending output from other processes). A negative value | |
4427 | means don't run any timers either. | |
4428 | ||
e0f24100 | 4429 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4430 | received input from that process before the timeout elapsed. |
e0f24100 | 4431 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4432 | |
dfcf069d | 4433 | int |
d5a3eaaf AS |
4434 | wait_reading_process_output (int time_limit, int microsecs, int read_kbd, |
4435 | int do_display, | |
4436 | Lisp_Object wait_for_cell, | |
4437 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4438 | { |
41d03b9a | 4439 | register int channel, nfds; |
855448dc | 4440 | SELECT_TYPE Available; |
bad49fc7 | 4441 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4442 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4443 | int check_connect; |
4444 | #endif | |
4445 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4446 | int xerrno; |
4447 | Lisp_Object proc; | |
41d03b9a | 4448 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4449 | int wait_channel = -1; |
d0d6b7c5 | 4450 | int got_some_input = 0; |
2beb96f9 | 4451 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4452 | |
4453 | FD_ZERO (&Available); | |
bad49fc7 | 4454 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4455 | FD_ZERO (&Connecting); |
bad49fc7 | 4456 | #endif |
d0d6b7c5 | 4457 | |
2b0a91e7 SM |
4458 | if (time_limit == 0 && wait_proc && !NILP (Vinhibit_quit) |
4459 | && !(CONSP (wait_proc->status) && EQ (XCAR (wait_proc->status), Qexit))) | |
4460 | message ("Blocking call to accept-process-output with quit inhibited!!"); | |
4461 | ||
b89a415a KS |
4462 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4463 | if (wait_proc != NULL) | |
60f0fb11 | 4464 | wait_channel = wait_proc->infd; |
84aa3ace | 4465 | |
2beb96f9 KS |
4466 | record_unwind_protect (wait_reading_process_output_unwind, |
4467 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4468 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4469 | |
4470 | /* Since we may need to wait several times, | |
4471 | compute the absolute time to return at. */ | |
4472 | if (time_limit || microsecs) | |
4473 | { | |
4474 | EMACS_GET_TIME (end_time); | |
4475 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4476 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4477 | } | |
4478 | ||
d0d6b7c5 JB |
4479 | while (1) |
4480 | { | |
c0239a0b RS |
4481 | int timeout_reduced_for_timers = 0; |
4482 | ||
d0d6b7c5 JB |
4483 | /* If calling from keyboard input, do not quit |
4484 | since we want to return C-g as an input character. | |
4485 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4486 | if (read_kbd >= 0) |
d0d6b7c5 | 4487 | QUIT; |
6b61353c | 4488 | #ifdef SYNC_INPUT |
ef5eb925 | 4489 | else |
c3eff1b0 | 4490 | process_pending_signals (); |
6b61353c | 4491 | #endif |
d0d6b7c5 | 4492 | |
889255b4 | 4493 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4494 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4495 | break; |
4496 | ||
d0d6b7c5 JB |
4497 | /* Compute time from now till when time limit is up */ |
4498 | /* Exit if already run out */ | |
4499 | if (time_limit == -1) | |
4500 | { | |
4501 | /* -1 specified for timeout means | |
4502 | gobble output available now | |
4503 | but don't wait at all. */ | |
4504 | ||
4505 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4506 | } | |
4507 | else if (time_limit || microsecs) | |
4508 | { | |
4509 | EMACS_GET_TIME (timeout); | |
4510 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4511 | if (EMACS_TIME_NEG_P (timeout)) | |
4512 | break; | |
4513 | } | |
4514 | else | |
4515 | { | |
4516 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4517 | } | |
4518 | ||
f854a00b RS |
4519 | /* Normally we run timers here. |
4520 | But not if wait_for_cell; in those cases, | |
4521 | the wait is supposed to be short, | |
4522 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4523 | if (NILP (wait_for_cell) |
b89a415a | 4524 | && just_wait_proc >= 0) |
fb4c3627 | 4525 | { |
c0239a0b | 4526 | EMACS_TIME timer_delay; |
c573ae8e | 4527 | |
9baacf76 | 4528 | do |
c573ae8e | 4529 | { |
9baacf76 | 4530 | int old_timers_run = timers_run; |
c88164fe | 4531 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4532 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4533 | |
9baacf76 | 4534 | timer_delay = timer_check (1); |
a2fab450 GM |
4535 | |
4536 | /* If a timer has run, this might have changed buffers | |
4537 | an alike. Make read_key_sequence aware of that. */ | |
4538 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4539 | && (old_buffer != current_buffer |
4540 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4541 | && waiting_for_user_input_p == -1) |
4542 | record_asynch_buffer_change (); | |
177c0ea7 | 4543 | |
9baacf76 GM |
4544 | if (timers_run != old_timers_run && do_display) |
4545 | /* We must retry, since a timer may have requeued itself | |
4546 | and that could alter the time_delay. */ | |
3007ebfb | 4547 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4548 | else |
4549 | break; | |
c573ae8e | 4550 | } |
9baacf76 | 4551 | while (!detect_input_pending ()); |
c573ae8e | 4552 | |
69645afc | 4553 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4554 | if (read_kbd != 0 |
69645afc RS |
4555 | && requeued_events_pending_p ()) |
4556 | break; | |
4557 | ||
c0239a0b | 4558 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4559 | { |
4560 | EMACS_TIME difference; | |
4561 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4562 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4563 | { |
4564 | timeout = timer_delay; | |
4565 | timeout_reduced_for_timers = 1; | |
4566 | } | |
fb4c3627 | 4567 | } |
4abca5e7 RS |
4568 | /* If time_limit is -1, we are not going to wait at all. */ |
4569 | else if (time_limit != -1) | |
c573ae8e RS |
4570 | { |
4571 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4572 | wait_reading_process_output_1 (); |
c573ae8e | 4573 | } |
fb4c3627 RS |
4574 | } |
4575 | ||
90ab1a81 JB |
4576 | /* Cause C-g and alarm signals to take immediate action, |
4577 | and cause input available signals to zero out timeout. | |
4578 | ||
4579 | It is important that we do this before checking for process | |
4580 | activity. If we get a SIGCHLD after the explicit checks for | |
4581 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4582 | if (read_kbd < 0) |
90ab1a81 JB |
4583 | set_waiting_for_input (&timeout); |
4584 | ||
6be429b1 JB |
4585 | /* If status of something has changed, and no input is |
4586 | available, notify the user of the change right away. After | |
4587 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4588 | timeout to get our attention. */ |
4589 | if (update_tick != process_tick) | |
6be429b1 | 4590 | { |
bad49fc7 KS |
4591 | SELECT_TYPE Atemp; |
4592 | #ifdef NON_BLOCKING_CONNECT | |
4593 | SELECT_TYPE Ctemp; | |
4594 | #endif | |
dd2a17ab | 4595 | |
cb768704 J |
4596 | if (kbd_on_hold_p ()) |
4597 | FD_ZERO (&Atemp); | |
4598 | else | |
4599 | Atemp = input_wait_mask; | |
bad49fc7 KS |
4600 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4601 | ||
6be429b1 | 4602 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
994d9841 NR |
4603 | if ((select (max (max (max_process_desc, max_keyboard_desc), |
4604 | max_gpm_desc) + 1, | |
177c0ea7 | 4605 | &Atemp, |
bad49fc7 | 4606 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4607 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4608 | #else |
4609 | (SELECT_TYPE *)0, | |
4610 | #endif | |
dd2a17ab | 4611 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4612 | <= 0)) |
90ab1a81 JB |
4613 | { |
4614 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4615 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4616 | clear_waiting_for_input (); |
ff6daed3 | 4617 | status_notify (NULL); |
e42bdf01 | 4618 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4619 | } |
6be429b1 JB |
4620 | } |
4621 | ||
dd2a17ab | 4622 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4623 | read whatever data has already been received. */ |
6bfd98e7 | 4624 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4625 | update_status (wait_proc); |
6bfd98e7 | 4626 | if (wait_proc |
dd2a17ab KS |
4627 | && ! EQ (wait_proc->status, Qrun) |
4628 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4629 | { |
215b45e9 | 4630 | int nread, total_nread = 0; |
7ce63188 | 4631 | |
9aa2a7f4 | 4632 | clear_waiting_for_input (); |
7ce63188 RS |
4633 | XSETPROCESS (proc, wait_proc); |
4634 | ||
4635 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4636 | while (wait_proc->infd >= 0) |
215b45e9 | 4637 | { |
60f0fb11 | 4638 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4639 | |
4640 | if (nread == 0) | |
4641 | break; | |
4642 | ||
63136da6 AS |
4643 | if (0 < nread) |
4644 | { | |
891bd142 SM |
4645 | total_nread += nread; |
4646 | got_some_input = 1; | |
4647 | } | |
215b45e9 RS |
4648 | #ifdef EIO |
4649 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4650 | break; |
e1b37c34 GM |
4651 | #endif |
4652 | #ifdef EAGAIN | |
4653 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4654 | break; |
e1b37c34 GM |
4655 | #endif |
4656 | #ifdef EWOULDBLOCK | |
4657 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4658 | break; |
215b45e9 RS |
4659 | #endif |
4660 | } | |
7ce63188 | 4661 | if (total_nread > 0 && do_display) |
3007ebfb | 4662 | redisplay_preserve_echo_area (10); |
7ce63188 | 4663 | |
9aa2a7f4 JB |
4664 | break; |
4665 | } | |
6be429b1 | 4666 | |
d0d6b7c5 JB |
4667 | /* Wait till there is something to do */ |
4668 | ||
b89a415a | 4669 | if (wait_proc && just_wait_proc) |
107ed38d | 4670 | { |
60f0fb11 | 4671 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4672 | break; |
60f0fb11 | 4673 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 KS |
4674 | check_delay = 0; |
4675 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4676 | } |
4677 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4678 | { |
4679 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4680 | check_delay = 0; |
4681 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4682 | } |
a69281ff | 4683 | else |
dd2a17ab | 4684 | { |
b89a415a | 4685 | if (! read_kbd) |
dd2a17ab KS |
4686 | Available = non_keyboard_wait_mask; |
4687 | else | |
4688 | Available = input_wait_mask; | |
bad49fc7 | 4689 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
6b61353c | 4690 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4691 | } |
d0d6b7c5 | 4692 | |
ff11dfa1 | 4693 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4694 | redisplay now, before we start to wait. There is a race |
4695 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4696 | and indicates that a frame is trashed, the select may block |
4697 | displaying a trashed screen. */ | |
5164ee8e | 4698 | if (frame_garbaged && do_display) |
7286affd RS |
4699 | { |
4700 | clear_waiting_for_input (); | |
3007ebfb | 4701 | redisplay_preserve_echo_area (11); |
b89a415a | 4702 | if (read_kbd < 0) |
7efe788e | 4703 | set_waiting_for_input (&timeout); |
7286affd | 4704 | } |
ffd56f97 | 4705 | |
dd2a17ab | 4706 | no_avail = 0; |
b89a415a | 4707 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4708 | { |
4709 | nfds = 0; | |
dd2a17ab | 4710 | no_avail = 1; |
0a65b032 RS |
4711 | } |
4712 | else | |
dd2a17ab | 4713 | { |
bad49fc7 | 4714 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4715 | if (check_connect) |
4716 | Connecting = connect_wait_mask; | |
bad49fc7 | 4717 | #endif |
6b61353c KH |
4718 | |
4719 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4720 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4721 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4722 | read_output_delay, and we are not reading output for a |
4723 | specific wait_channel. It is not executed if | |
4724 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4725 | if (process_output_skip && check_delay > 0) |
4726 | { | |
4727 | int usecs = EMACS_USECS (timeout); | |
4728 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4729 | usecs = READ_OUTPUT_DELAY_MAX; | |
4730 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4731 | { | |
4732 | proc = chan_process[channel]; | |
4733 | if (NILP (proc)) | |
4734 | continue; | |
db853b7a | 4735 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4736 | processes with non-zero read_output_skip. */ |
4737 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4738 | { |
4739 | check_delay--; | |
60f0fb11 | 4740 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4741 | continue; |
4742 | FD_CLR (channel, &Available); | |
60f0fb11 SM |
4743 | XPROCESS (proc)->read_output_skip = 0; |
4744 | if (XPROCESS (proc)->read_output_delay < usecs) | |
4745 | usecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4746 | } |
4747 | } | |
4748 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4749 | process_output_skip = 0; | |
4750 | } | |
4751 | #endif | |
872870b2 JD |
4752 | #if defined (USE_GTK) || defined (HAVE_GCONF) |
4753 | nfds = xg_select | |
4754 | #elif defined (HAVE_NS) | |
63136da6 | 4755 | nfds = ns_select |
edfda783 | 4756 | #else |
63136da6 | 4757 | nfds = select |
edfda783 | 4758 | #endif |
63136da6 | 4759 | (max (max (max_process_desc, max_keyboard_desc), |
994d9841 | 4760 | max_gpm_desc) + 1, |
177c0ea7 | 4761 | &Available, |
bad49fc7 | 4762 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4763 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4764 | #else |
4765 | (SELECT_TYPE *)0, | |
4766 | #endif | |
dd2a17ab KS |
4767 | (SELECT_TYPE *)0, &timeout); |
4768 | } | |
6720a7fb | 4769 | |
d0d6b7c5 JB |
4770 | xerrno = errno; |
4771 | ||
4772 | /* Make C-g and alarm signals set flags again */ | |
4773 | clear_waiting_for_input (); | |
4774 | ||
4775 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4776 | do_pending_window_change (0); |
d0d6b7c5 | 4777 | |
c0239a0b RS |
4778 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4779 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4780 | break; |
4781 | if (nfds < 0) | |
4782 | { | |
4783 | if (xerrno == EINTR) | |
dd2a17ab | 4784 | no_avail = 1; |
d0d6b7c5 JB |
4785 | else if (xerrno == EBADF) |
4786 | { | |
4787 | #ifdef AIX | |
4788 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4789 | the child's closure of the pts gives the parent a SIGHUP, and | |
4790 | the ptc file descriptor is automatically closed, | |
4791 | yielding EBADF here or at select() call above. | |
4792 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4793 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4794 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4795 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4796 | #else |
4797 | abort (); | |
4798 | #endif | |
4799 | } | |
4800 | else | |
68c45bf0 | 4801 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4802 | } |
dd2a17ab KS |
4803 | |
4804 | if (no_avail) | |
4805 | { | |
4806 | FD_ZERO (&Available); | |
bad49fc7 | 4807 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4808 | } |
4809 | ||
5d5beb62 RS |
4810 | #if 0 /* When polling is used, interrupt_input is 0, |
4811 | so get_input_pending should read the input. | |
4812 | So this should not be needed. */ | |
4813 | /* If we are using polling for input, | |
4814 | and we see input available, make it get read now. | |
4815 | Otherwise it might not actually get read for a second. | |
214d6069 | 4816 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4817 | it might never get read at all if we don't spend much time |
214d6069 | 4818 | outside of wait_reading_process_output. */ |
b89a415a | 4819 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4820 | && keyboard_bit_set (&Available) |
4821 | && input_polling_used ()) | |
4822 | kill (getpid (), SIGALRM); | |
4823 | #endif | |
4824 | ||
d0d6b7c5 JB |
4825 | /* Check for keyboard input */ |
4826 | /* If there is any, return immediately | |
4827 | to give it higher priority than subprocesses */ | |
4828 | ||
b89a415a | 4829 | if (read_kbd != 0) |
6ed6233b | 4830 | { |
a2fab450 | 4831 | int old_timers_run = timers_run; |
c88164fe | 4832 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4833 | Lisp_Object old_window = selected_window; |
a2fab450 | 4834 | int leave = 0; |
177c0ea7 | 4835 | |
5d6c2aa3 | 4836 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4837 | { |
4838 | swallow_events (do_display); | |
4839 | if (detect_input_pending_run_timers (do_display)) | |
4840 | leave = 1; | |
4841 | } | |
6ed6233b | 4842 | |
a2fab450 GM |
4843 | /* If a timer has run, this might have changed buffers |
4844 | an alike. Make read_key_sequence aware of that. */ | |
4845 | if (timers_run != old_timers_run | |
c88164fe | 4846 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4847 | && (old_buffer != current_buffer |
4848 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4849 | record_asynch_buffer_change (); |
4850 | ||
4851 | if (leave) | |
4852 | break; | |
177c0ea7 JB |
4853 | } |
4854 | ||
69645afc | 4855 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4856 | if (read_kbd != 0 |
69645afc RS |
4857 | && requeued_events_pending_p ()) |
4858 | break; | |
4859 | ||
77e1b3d4 RS |
4860 | /* If we are not checking for keyboard input now, |
4861 | do process events (but don't run any timers). | |
4862 | This is so that X events will be processed. | |
0c9960e9 | 4863 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4864 | That would causes delays in pasting selections, for example. |
4865 | ||
4866 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4867 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4868 | { |
4869 | swallow_events (do_display); | |
0c9960e9 | 4870 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4871 | if (detect_input_pending ()) |
4872 | break; | |
5d5beb62 | 4873 | #endif |
0c9960e9 | 4874 | } |
f854a00b | 4875 | |
84aa3ace | 4876 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4877 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4878 | break; |
4879 | ||
4746118a | 4880 | #ifdef SIGIO |
5d5beb62 | 4881 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4882 | go read it. This can happen with X on BSD after logging out. |
4883 | In that case, there really is no input and no SIGIO, | |
4884 | but select says there is input. */ | |
4885 | ||
b89a415a | 4886 | if (read_kbd && interrupt_input |
2601f59e | 4887 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4888 | kill (getpid (), SIGIO); |
4746118a | 4889 | #endif |
d0d6b7c5 | 4890 | |
d0d6b7c5 JB |
4891 | if (! wait_proc) |
4892 | got_some_input |= nfds > 0; | |
4893 | ||
32676c08 JB |
4894 | /* If checking input just got us a size-change event from X, |
4895 | obey it now if we should. */ | |
b89a415a | 4896 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4897 | do_pending_window_change (0); |
32676c08 | 4898 | |
a9f2c884 | 4899 | /* Check for data from a process. */ |
dd2a17ab KS |
4900 | if (no_avail || nfds == 0) |
4901 | continue; | |
4902 | ||
a9f2c884 RS |
4903 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4904 | but this is safer in the short run. */ | |
a69281ff | 4905 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4906 | { |
a69281ff RS |
4907 | if (FD_ISSET (channel, &Available) |
4908 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4909 | { |
4910 | int nread; | |
4911 | ||
4912 | /* If waiting for this channel, arrange to return as | |
4913 | soon as no more input to be processed. No more | |
4914 | waiting. */ | |
4915 | if (wait_channel == channel) | |
4916 | { | |
a9f2c884 | 4917 | wait_channel = -1; |
d0d6b7c5 JB |
4918 | time_limit = -1; |
4919 | got_some_input = 1; | |
4920 | } | |
4921 | proc = chan_process[channel]; | |
4922 | if (NILP (proc)) | |
4923 | continue; | |
4924 | ||
e690ca94 KS |
4925 | /* If this is a server stream socket, accept connection. */ |
4926 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4927 | { | |
4928 | server_accept_connection (proc, channel); | |
4929 | continue; | |
4930 | } | |
4931 | ||
d0d6b7c5 JB |
4932 | /* Read data from the process, starting with our |
4933 | buffered-ahead character if we have one. */ | |
4934 | ||
4935 | nread = read_process_output (proc, channel); | |
4936 | if (nread > 0) | |
4937 | { | |
4938 | /* Since read_process_output can run a filter, | |
4939 | which can call accept-process-output, | |
4940 | don't try to read from any other processes | |
4941 | before doing the select again. */ | |
4942 | FD_ZERO (&Available); | |
4943 | ||
4944 | if (do_display) | |
3007ebfb | 4945 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4946 | } |
4947 | #ifdef EWOULDBLOCK | |
4948 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4949 | ; | |
0b75e9a4 | 4950 | #endif |
89d7280d RS |
4951 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4952 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4953 | #ifdef O_NONBLOCK |
4954 | else if (nread == -1 && errno == EAGAIN) | |
4955 | ; | |
4956 | #else | |
4957 | #ifdef O_NDELAY | |
4958 | else if (nread == -1 && errno == EAGAIN) | |
4959 | ; | |
4960 | /* Note that we cannot distinguish between no input | |
4961 | available now and a closed pipe. | |
4962 | With luck, a closed pipe will be accompanied by | |
4963 | subprocess termination and SIGCHLD. */ | |
d888760c | 4964 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4965 | ; |
4740825c KS |
4966 | #endif /* O_NDELAY */ |
4967 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4968 | #ifdef HAVE_PTYS |
4969 | /* On some OSs with ptys, when the process on one end of | |
4970 | a pty exits, the other end gets an error reading with | |
4971 | errno = EIO instead of getting an EOF (0 bytes read). | |
4972 | Therefore, if we get an error reading and errno = | |
4973 | EIO, just continue, because the child process has | |
4974 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4975 | get a SIGCHLD). |
4976 | ||
4977 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4978 | got lost. So raise the signal again just in case. |
5651af6d | 4979 | It can't hurt. */ |
d0d6b7c5 | 4980 | else if (nread == -1 && errno == EIO) |
4740825c | 4981 | { |
a70d5371 | 4982 | /* Clear the descriptor now, so we only raise the |
42371deb | 4983 | signal once. Don't do this if `process' is only |
a70d5371 NR |
4984 | a pty. */ |
4985 | if (XPROCESS (proc)->pid != -2) | |
4986 | { | |
4987 | FD_CLR (channel, &input_wait_mask); | |
4988 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4740825c | 4989 | |
a70d5371 NR |
4990 | kill (getpid (), SIGCHLD); |
4991 | } | |
4740825c KS |
4992 | } |
4993 | #endif /* HAVE_PTYS */ | |
ffd56f97 JB |
4994 | /* If we can detect process termination, don't consider the process |
4995 | gone just because its pipe is closed. */ | |
d0d6b7c5 | 4996 | #ifdef SIGCHLD |
d888760c | 4997 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4998 | ; |
4999 | #endif | |
5000 | else | |
5001 | { | |
5002 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 5003 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 5004 | deactivate_process (proc); |
6bfd98e7 | 5005 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 JB |
5006 | update_status (XPROCESS (proc)); |
5007 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
5008 | XPROCESS (proc)->status | |
5009 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5010 | } | |
5011 | } | |
177c0ea7 | 5012 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
5013 | if (check_connect && FD_ISSET (channel, &Connecting) |
5014 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
5015 | { |
5016 | struct Lisp_Process *p; | |
dd2a17ab KS |
5017 | |
5018 | FD_CLR (channel, &connect_wait_mask); | |
5019 | if (--num_pending_connects < 0) | |
5020 | abort (); | |
5021 | ||
5022 | proc = chan_process[channel]; | |
5023 | if (NILP (proc)) | |
5024 | continue; | |
5025 | ||
5026 | p = XPROCESS (proc); | |
5027 | ||
5028 | #ifdef GNU_LINUX | |
5029 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 5030 | So only use it on systems where it is known to work. */ |
dd2a17ab | 5031 | { |
ed3751c8 JB |
5032 | int xlen = sizeof (xerrno); |
5033 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) | |
dd2a17ab KS |
5034 | xerrno = errno; |
5035 | } | |
5036 | #else | |
44c887be PJ |
5037 | { |
5038 | struct sockaddr pname; | |
ed3751c8 | 5039 | int pnamelen = sizeof (pname); |
44c887be PJ |
5040 | |
5041 | /* If connection failed, getpeername will fail. */ | |
5042 | xerrno = 0; | |
ed3751c8 | 5043 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
5044 | { |
5045 | /* Obtain connect failure code through error slippage. */ | |
5046 | char dummy; | |
dd2a17ab | 5047 | xerrno = errno; |
ed3751c8 | 5048 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
5049 | xerrno = errno; |
5050 | } | |
5051 | } | |
dd2a17ab KS |
5052 | #endif |
5053 | if (xerrno) | |
5054 | { | |
60f0fb11 | 5055 | p->tick = ++process_tick; |
dd2a17ab KS |
5056 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); |
5057 | deactivate_process (proc); | |
5058 | } | |
5059 | else | |
5060 | { | |
5061 | p->status = Qrun; | |
5062 | /* Execute the sentinel here. If we had relied on | |
5063 | status_notify to do it later, it will read input | |
5064 | from the process before calling the sentinel. */ | |
5065 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 5066 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 5067 | { |
60f0fb11 SM |
5068 | FD_SET (p->infd, &input_wait_mask); |
5069 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
5070 | } |
5071 | } | |
5072 | } | |
5073 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
5074 | } /* end for each file descriptor */ |
5075 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 5076 | |
2beb96f9 | 5077 | unbind_to (count, Qnil); |
d430ee71 | 5078 | |
ffd56f97 JB |
5079 | /* If calling from keyboard input, do not quit |
5080 | since we want to return C-g as an input character. | |
5081 | Otherwise, do pending quit if requested. */ | |
b89a415a | 5082 | if (read_kbd >= 0) |
ffd56f97 JB |
5083 | { |
5084 | /* Prevent input_pending from remaining set if we quit. */ | |
5085 | clear_input_pending (); | |
5086 | QUIT; | |
5087 | } | |
efa2a55c | 5088 | |
d0d6b7c5 JB |
5089 | return got_some_input; |
5090 | } | |
5091 | \f | |
3b9a3dfa RS |
5092 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
5093 | ||
5094 | static Lisp_Object | |
d3da34e0 | 5095 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5096 | { |
70949dac | 5097 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5098 | } |
5099 | ||
5100 | static Lisp_Object | |
d3da34e0 | 5101 | read_process_output_error_handler (Lisp_Object error) |
3b9a3dfa RS |
5102 | { |
5103 | cmd_error_internal (error, "error in process filter: "); | |
5104 | Vinhibit_quit = Qt; | |
5105 | update_echo_area (); | |
833ba342 | 5106 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5107 | return Qt; |
3b9a3dfa RS |
5108 | } |
5109 | ||
d0d6b7c5 JB |
5110 | /* Read pending output from the process channel, |
5111 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5112 | Yield number of decoded characters read. |
d0d6b7c5 | 5113 | |
116c423c | 5114 | This function reads at most 4096 characters. |
d0d6b7c5 | 5115 | If you want to read all available subprocess output, |
0fa1789e KH |
5116 | you must call it repeatedly until it returns zero. |
5117 | ||
5118 | The characters read are decoded according to PROC's coding-system | |
5119 | for decoding. */ | |
d0d6b7c5 | 5120 | |
ff6daed3 | 5121 | static int |
d3da34e0 | 5122 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5123 | { |
8f924df7 | 5124 | register int nbytes; |
d0d6b7c5 | 5125 | char *chars; |
d0d6b7c5 | 5126 | register Lisp_Object outstream; |
d0d6b7c5 JB |
5127 | register struct Lisp_Process *p = XPROCESS (proc); |
5128 | register int opoint; | |
c7580538 | 5129 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5130 | int carryover = p->decoding_carryover; |
116c423c | 5131 | int readmax = 4096; |
3a4fa2f2 SM |
5132 | int count = SPECPDL_INDEX (); |
5133 | Lisp_Object odeactivate; | |
d0d6b7c5 | 5134 | |
e690ca94 | 5135 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
5136 | if (carryover) |
5137 | /* See the comment above. */ | |
72af86bd | 5138 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5139 | |
e690ca94 KS |
5140 | #ifdef DATAGRAM_SOCKETS |
5141 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5142 | if (DATAGRAM_CHAN_P (channel)) | |
5143 | { | |
5144 | int len = datagram_address[channel].len; | |
39b1da20 | 5145 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5146 | 0, datagram_address[channel].sa, &len); |
5147 | } | |
5148 | else | |
5149 | #endif | |
d0d6b7c5 | 5150 | if (proc_buffered_char[channel] < 0) |
6b61353c | 5151 | { |
39b1da20 | 5152 | nbytes = emacs_read (channel, chars + carryover, readmax); |
6b61353c | 5153 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5154 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5155 | { |
60f0fb11 | 5156 | int delay = p->read_output_delay; |
6b61353c KH |
5157 | if (nbytes < 256) |
5158 | { | |
5159 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5160 | { | |
5161 | if (delay == 0) | |
5162 | process_output_delay_count++; | |
5163 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5164 | } | |
5165 | } | |
39b1da20 | 5166 | else if (delay > 0 && (nbytes == readmax)) |
6b61353c KH |
5167 | { |
5168 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5169 | if (delay == 0) | |
5170 | process_output_delay_count--; | |
5171 | } | |
60f0fb11 | 5172 | p->read_output_delay = delay; |
6b61353c KH |
5173 | if (delay) |
5174 | { | |
60f0fb11 | 5175 | p->read_output_skip = 1; |
6b61353c KH |
5176 | process_output_skip = 1; |
5177 | } | |
5178 | } | |
5179 | #endif | |
5180 | } | |
d0d6b7c5 JB |
5181 | else |
5182 | { | |
ed7a4b2d | 5183 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 5184 | proc_buffered_char[channel] = -1; |
39b1da20 | 5185 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
5186 | if (nbytes < 0) |
5187 | nbytes = 1; | |
d0d6b7c5 | 5188 | else |
1d2fc612 | 5189 | nbytes = nbytes + 1; |
d0d6b7c5 | 5190 | } |
d0d6b7c5 | 5191 | |
60f0fb11 | 5192 | p->decoding_carryover = 0; |
ca65341e | 5193 | |
ed7a4b2d | 5194 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5195 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5196 | if (nbytes <= 0) |
5197 | { | |
5198 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5199 | return nbytes; | |
5200 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5201 | } | |
d0d6b7c5 | 5202 | |
1d2fc612 | 5203 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5204 | nbytes += carryover; |
0fa1789e | 5205 | |
3a4fa2f2 SM |
5206 | odeactivate = Vdeactivate_mark; |
5207 | /* There's no good reason to let process filters change the current | |
5208 | buffer, and many callers of accept-process-output, sit-for, and | |
5209 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 5210 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
3a4fa2f2 | 5211 | |
1d2fc612 | 5212 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
5213 | outstream = p->filter; |
5214 | if (!NILP (outstream)) | |
5215 | { | |
dfc21838 | 5216 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 5217 | Lisp_Object text; |
4da2f5be | 5218 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5219 | int waiting = waiting_for_user_input_p; |
30c78175 | 5220 | |
dfc21838 RS |
5221 | /* No need to gcpro these, because all we do with them later |
5222 | is test them for EQness, and none of them should be a string. */ | |
dfc21838 RS |
5223 | XSETBUFFER (obuffer, current_buffer); |
5224 | okeymap = current_buffer->keymap; | |
30c78175 | 5225 | |
3a4fa2f2 SM |
5226 | /* We inhibit quit here instead of just catching it so that |
5227 | hitting ^G when a filter happens to be running won't screw | |
5228 | it up. */ | |
d0d6b7c5 | 5229 | specbind (Qinhibit_quit, Qt); |
6545aada | 5230 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5231 | |
4da2f5be RS |
5232 | /* In case we get recursively called, |
5233 | and we already saved the match data nonrecursively, | |
5234 | save the same match data in safely recursive fashion. */ | |
5235 | if (outer_running_asynch_code) | |
5236 | { | |
5237 | Lisp_Object tem; | |
5238 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5239 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5240 | restore_search_regs (); | |
5241 | record_unwind_save_match_data (); | |
5242 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5243 | } |
5244 | ||
5245 | /* For speed, if a search happens within this code, | |
5246 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5247 | running_asynch_code = 1; |
4da2f5be | 5248 | |
5bbf78c1 KH |
5249 | decode_coding_c_string (coding, chars, nbytes, Qt); |
5250 | text = coding->dst_object; | |
5bbf78c1 | 5251 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5252 | /* A new coding system might be found. */ |
5bbf78c1 | 5253 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5254 | { |
5bbf78c1 | 5255 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d KH |
5256 | |
5257 | /* Don't call setup_coding_system for | |
5258 | proc_decode_coding_system[channel] here. It is done in | |
5259 | detect_coding called via decode_coding above. */ | |
5260 | ||
5261 | /* If a coding system for encoding is not yet decided, we set | |
5262 | it as the same as coding-system for decoding. | |
5263 | ||
5264 | But, before doing that we must check if | |
5265 | proc_encode_coding_system[p->outfd] surely points to a | |
5266 | valid memory because p->outfd will be changed once EOF is | |
5267 | sent to the process. */ | |
5268 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5269 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5270 | { |
76d812bb KH |
5271 | p->encode_coding_system |
5272 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5273 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5274 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5275 | } |
5276 | } | |
51c6067d | 5277 | |
dd8c7a53 KH |
5278 | if (coding->carryover_bytes > 0) |
5279 | { | |
04961398 KH |
5280 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5281 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5282 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5283 | coding->carryover_bytes); | |
8c406a9b | 5284 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5285 | } |
e430e5ba | 5286 | if (SBYTES (text) > 0) |
dd97db06 KH |
5287 | internal_condition_case_1 (read_process_output_call, |
5288 | Fcons (outstream, | |
5289 | Fcons (proc, Fcons (text, Qnil))), | |
5290 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5291 | read_process_output_error_handler); | |
4da2f5be RS |
5292 | |
5293 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5294 | restore_search_regs (); |
4da2f5be | 5295 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5296 | |
bbce7d72 RS |
5297 | /* Restore waiting_for_user_input_p as it was |
5298 | when we were called, in case the filter clobbered it. */ | |
5299 | waiting_for_user_input_p = waiting; | |
5300 | ||
7973cfa8 RS |
5301 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5302 | because we might have changed minor modes or other things | |
5303 | that affect key bindings. */ | |
dfc21838 RS |
5304 | if (! EQ (Fcurrent_buffer (), obuffer) |
5305 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5306 | #endif |
927e08be RS |
5307 | /* But do it only if the caller is actually going to read events. |
5308 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5309 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5310 | if (waiting_for_user_input_p == -1) |
5311 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5312 | } |
5313 | ||
5314 | /* If no filter, write into buffer if it isn't dead. */ | |
3a4fa2f2 | 5315 | else if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) |
d0d6b7c5 | 5316 | { |
b0310da4 | 5317 | Lisp_Object old_read_only; |
12ca5cdf | 5318 | int old_begv, old_zv; |
d8a2934e | 5319 | int old_begv_byte, old_zv_byte; |
d8a2934e RS |
5320 | int before, before_byte; |
5321 | int opoint_byte; | |
ed7a4b2d | 5322 | Lisp_Object text; |
926b7e5e | 5323 | struct buffer *b; |
30c78175 | 5324 | |
d0d6b7c5 | 5325 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5326 | opoint = PT; |
d8a2934e | 5327 | opoint_byte = PT_BYTE; |
b0310da4 | 5328 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
5329 | old_begv = BEGV; |
5330 | old_zv = ZV; | |
d8a2934e RS |
5331 | old_begv_byte = BEGV_BYTE; |
5332 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
5333 | |
5334 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
5335 | |
5336 | /* Insert new output into buffer | |
5337 | at the current end-of-output marker, | |
5338 | thus preserving logical ordering of input and output. */ | |
5339 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5340 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5341 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5342 | ZV_BYTE)); | |
d0d6b7c5 | 5343 | else |
d8a2934e | 5344 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5345 | before = PT; |
d8a2934e | 5346 | before_byte = PT_BYTE; |
b0310da4 JB |
5347 | |
5348 | /* If the output marker is outside of the visible region, save | |
5349 | the restriction and widen. */ | |
6ec8bbd2 | 5350 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5351 | Fwiden (); |
5352 | ||
5bbf78c1 KH |
5353 | decode_coding_c_string (coding, chars, nbytes, Qt); |
5354 | text = coding->dst_object; | |
5355 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5356 | /* A new coding system might be found. See the comment in the |
5357 | similar code in the previous `if' block. */ | |
5bbf78c1 | 5358 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5359 | { |
5bbf78c1 | 5360 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d | 5361 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5362 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5363 | { |
76d812bb KH |
5364 | p->encode_coding_system |
5365 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5366 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5367 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5368 | } |
5369 | } | |
dd8c7a53 KH |
5370 | if (coding->carryover_bytes > 0) |
5371 | { | |
04961398 KH |
5372 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5373 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5374 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5375 | coding->carryover_bytes); | |
8c406a9b | 5376 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5377 | } |
d69864bf KH |
5378 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5379 | if (NILP (current_buffer->enable_multibyte_characters) | |
5380 | != ! STRING_MULTIBYTE (text)) | |
5381 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5382 | ? Fstring_as_unibyte (text) |
03f04413 | 5383 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5384 | /* Insert before markers in case we are inserting where |
5385 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5386 | insert_from_string_before_markers (text, 0, 0, |
5387 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5388 | |
926b7e5e GM |
5389 | /* Make sure the process marker's position is valid when the |
5390 | process buffer is changed in the signal_after_change above. | |
5391 | W3 is known to do that. */ | |
5392 | if (BUFFERP (p->buffer) | |
5393 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5394 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5395 | else | |
5396 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5397 | |
d0d6b7c5 JB |
5398 | update_mode_lines++; |
5399 | ||
12ca5cdf RS |
5400 | /* Make sure opoint and the old restrictions |
5401 | float ahead of any new text just as point would. */ | |
5402 | if (opoint >= before) | |
d8a2934e RS |
5403 | { |
5404 | opoint += PT - before; | |
5405 | opoint_byte += PT_BYTE - before_byte; | |
5406 | } | |
12ca5cdf | 5407 | if (old_begv > before) |
d8a2934e RS |
5408 | { |
5409 | old_begv += PT - before; | |
5410 | old_begv_byte += PT_BYTE - before_byte; | |
5411 | } | |
12ca5cdf | 5412 | if (old_zv >= before) |
d8a2934e RS |
5413 | { |
5414 | old_zv += PT - before; | |
5415 | old_zv_byte += PT_BYTE - before_byte; | |
5416 | } | |
12ca5cdf | 5417 | |
b0310da4 | 5418 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5419 | if (old_begv != BEGV || old_zv != ZV) |
5420 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5421 | |
30c78175 | 5422 | |
b0310da4 | 5423 | current_buffer->read_only = old_read_only; |
d8a2934e | 5424 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5425 | } |
3a4fa2f2 SM |
5426 | /* Handling the process output should not deactivate the mark. */ |
5427 | Vdeactivate_mark = odeactivate; | |
5428 | ||
5429 | unbind_to (count, Qnil); | |
1d2fc612 | 5430 | return nbytes; |
d0d6b7c5 | 5431 | } |
d0d6b7c5 JB |
5432 | \f |
5433 | /* Sending data to subprocess */ | |
5434 | ||
5435 | jmp_buf send_process_frame; | |
0daad115 | 5436 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5437 | |
5438 | SIGTYPE | |
d3da34e0 | 5439 | send_process_trap (int ignore) |
d0d6b7c5 | 5440 | { |
333f1b6f | 5441 | SIGNAL_THREAD_CHECK (SIGPIPE); |
c8f44005 | 5442 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5443 | longjmp (send_process_frame, 1); |
5444 | } | |
5445 | ||
4556b700 RS |
5446 | /* Send some data to process PROC. |
5447 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5448 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5449 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5450 | |
a92e4183 KH |
5451 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5452 | for encoding before it is sent. | |
1fb0098c GM |
5453 | |
5454 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5455 | |
ff6daed3 | 5456 | static void |
d3da34e0 JB |
5457 | send_process (volatile Lisp_Object proc, unsigned char *volatile buf, |
5458 | volatile int len, volatile Lisp_Object object) | |
d0d6b7c5 | 5459 | { |
ecd1f654 | 5460 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5461 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5462 | int rv; |
0fa1789e | 5463 | struct coding_system *coding; |
347f3cd3 | 5464 | struct gcpro gcpro1; |
d2aa42f8 | 5465 | SIGTYPE (*volatile old_sigpipe) (int); |
6044e593 | 5466 | |
347f3cd3 | 5467 | GCPRO1 (object); |
d0d6b7c5 | 5468 | |
6bfd98e7 | 5469 | if (p->raw_status_new) |
6b61353c KH |
5470 | update_status (p); |
5471 | if (! EQ (p->status, Qrun)) | |
5472 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5473 | if (p->outfd < 0) |
6b61353c | 5474 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5475 | |
60f0fb11 | 5476 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5477 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5478 | |
ed7a4b2d KH |
5479 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5480 | || (BUFFERP (object) | |
a92e4183 KH |
5481 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5482 | || EQ (object, Qt)) | |
278bfdd6 | 5483 | { |
6b61353c | 5484 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
278bfdd6 KH |
5485 | /* The coding system for encoding was changed to raw-text |
5486 | because we sent a unibyte text previously. Now we are | |
5487 | sending a multibyte text, thus we must encode it by the | |
6b61353c KH |
5488 | original coding system specified for the current process. */ |
5489 | setup_coding_system (p->encode_coding_system, coding); | |
e08bbb84 | 5490 | coding->src_multibyte = 1; |
278bfdd6 KH |
5491 | } |
5492 | else | |
5493 | { | |
a92e4183 KH |
5494 | /* For sending a unibyte text, character code conversion should |
5495 | not take place but EOL conversion should. So, setup raw-text | |
5496 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5497 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5498 | { |
5499 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5500 | { | |
5501 | /* But, before changing the coding, we must flush out data. */ | |
5502 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5503 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5504 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5505 | } |
5bbf78c1 KH |
5506 | setup_coding_system (raw_text_coding_system |
5507 | (Vlast_coding_system_used), | |
5508 | coding); | |
e08bbb84 | 5509 | coding->src_multibyte = 0; |
a92e4183 | 5510 | } |
278bfdd6 | 5511 | } |
a4a37e65 KH |
5512 | coding->dst_multibyte = 0; |
5513 | ||
ed7a4b2d | 5514 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5515 | { |
5bbf78c1 | 5516 | coding->dst_object = Qt; |
ed7a4b2d | 5517 | if (BUFFERP (object)) |
0fa1789e | 5518 | { |
5bbf78c1 KH |
5519 | int from_byte, from, to; |
5520 | int save_pt, save_pt_byte; | |
5521 | struct buffer *cur = current_buffer; | |
5522 | ||
5523 | set_buffer_internal (XBUFFER (object)); | |
5524 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5525 | ||
5526 | from_byte = PTR_BYTE_POS (buf); | |
5527 | from = BYTE_TO_CHAR (from_byte); | |
5528 | to = BYTE_TO_CHAR (from_byte + len); | |
5529 | TEMP_SET_PT_BOTH (from, from_byte); | |
5530 | encode_coding_object (coding, object, from, from_byte, | |
5531 | to, from_byte + len, Qt); | |
5532 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5533 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5534 | } |
5535 | else if (STRINGP (object)) | |
5536 | { | |
550c8289 KH |
5537 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5538 | SBYTES (object), Qt); | |
0fa1789e | 5539 | } |
5bbf78c1 | 5540 | else |
452294c2 | 5541 | { |
5bbf78c1 KH |
5542 | coding->dst_object = make_unibyte_string (buf, len); |
5543 | coding->produced = len; | |
452294c2 | 5544 | } |
ed7a4b2d | 5545 | |
e7fbaa65 | 5546 | len = coding->produced; |
347f3cd3 AS |
5547 | object = coding->dst_object; |
5548 | buf = SDATA (object); | |
0fa1789e | 5549 | } |
d0d6b7c5 | 5550 | |
4556b700 RS |
5551 | if (pty_max_bytes == 0) |
5552 | { | |
5553 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5554 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5555 | if (pty_max_bytes < 0) |
5556 | pty_max_bytes = 250; | |
5557 | #else | |
5558 | pty_max_bytes = 250; | |
5559 | #endif | |
5560 | /* Deduct one, to leave space for the eof. */ | |
5561 | pty_max_bytes--; | |
5562 | } | |
5563 | ||
0daad115 GM |
5564 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5565 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5566 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5567 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5568 | { |
5569 | process_sent_to = proc; | |
5570 | while (len > 0) | |
5571 | { | |
5572 | int this = len; | |
93b4f699 | 5573 | |
0daad115 GM |
5574 | /* Send this batch, using one or more write calls. */ |
5575 | while (this > 0) | |
5576 | { | |
60f0fb11 | 5577 | int outfd = p->outfd; |
d2aa42f8 | 5578 | old_sigpipe = (SIGTYPE (*) (int)) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5579 | #ifdef DATAGRAM_SOCKETS |
5580 | if (DATAGRAM_CHAN_P (outfd)) | |
5581 | { | |
5582 | rv = sendto (outfd, (char *) buf, this, | |
5583 | 0, datagram_address[outfd].sa, | |
5584 | datagram_address[outfd].len); | |
5585 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5586 | { |
5587 | signal (SIGPIPE, old_sigpipe); | |
5588 | report_file_error ("sending datagram", | |
5589 | Fcons (proc, Qnil)); | |
5590 | } | |
e690ca94 KS |
5591 | } |
5592 | else | |
5593 | #endif | |
6b61353c KH |
5594 | { |
5595 | rv = emacs_write (outfd, (char *) buf, this); | |
5596 | #ifdef ADAPTIVE_READ_BUFFERING | |
60f0fb11 SM |
5597 | if (p->read_output_delay > 0 |
5598 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5599 | { |
60f0fb11 | 5600 | p->read_output_delay = 0; |
6b61353c | 5601 | process_output_delay_count--; |
60f0fb11 | 5602 | p->read_output_skip = 0; |
6b61353c KH |
5603 | } |
5604 | #endif | |
5605 | } | |
0daad115 | 5606 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5607 | |
0daad115 GM |
5608 | if (rv < 0) |
5609 | { | |
5610 | if (0 | |
d0d6b7c5 | 5611 | #ifdef EWOULDBLOCK |
0daad115 | 5612 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5613 | #endif |
5614 | #ifdef EAGAIN | |
0daad115 | 5615 | || errno == EAGAIN |
d0d6b7c5 | 5616 | #endif |
0daad115 | 5617 | ) |
177c0ea7 | 5618 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5619 | that may allow the program |
5620 | to finish doing output and read more. */ | |
5621 | { | |
0daad115 | 5622 | int offset = 0; |
4556b700 | 5623 | |
3433b6bd | 5624 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5625 | /* A gross hack to work around a bug in FreeBSD. |
5626 | In the following sequence, read(2) returns | |
5627 | bogus data: | |
5628 | ||
5629 | write(2) 1022 bytes | |
5630 | write(2) 954 bytes, get EAGAIN | |
5631 | read(2) 1024 bytes in process_read_output | |
5632 | read(2) 11 bytes in process_read_output | |
5633 | ||
5634 | That is, read(2) returns more bytes than have | |
5635 | ever been written successfully. The 1033 bytes | |
5636 | read are the 1022 bytes written successfully | |
5637 | after processing (for example with CRs added if | |
5638 | the terminal is set up that way which it is | |
5639 | here). The same bytes will be seen again in a | |
5640 | later read(2), without the CRs. */ | |
177c0ea7 | 5641 | |
0daad115 GM |
5642 | if (errno == EAGAIN) |
5643 | { | |
5644 | int flags = FWRITE; | |
60f0fb11 | 5645 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5646 | } |
3433b6bd | 5647 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5648 | |
0daad115 GM |
5649 | /* Running filters might relocate buffers or strings. |
5650 | Arrange to relocate BUF. */ | |
347f3cd3 | 5651 | if (BUFFERP (object)) |
0daad115 GM |
5652 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5653 | else if (STRINGP (object)) | |
d5db4077 | 5654 | offset = buf - SDATA (object); |
0daad115 | 5655 | |
f3e6605c | 5656 | #ifdef EMACS_HAS_USECS |
214d6069 | 5657 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5658 | #else |
214d6069 | 5659 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5660 | #endif |
4556b700 | 5661 | |
347f3cd3 | 5662 | if (BUFFERP (object)) |
0daad115 GM |
5663 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); |
5664 | else if (STRINGP (object)) | |
d5db4077 | 5665 | buf = offset + SDATA (object); |
4556b700 | 5666 | |
0daad115 GM |
5667 | rv = 0; |
5668 | } | |
5669 | else | |
5670 | /* This is a real error. */ | |
5671 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5672 | } | |
5673 | buf += rv; | |
5674 | len -= rv; | |
5675 | this -= rv; | |
5676 | } | |
0daad115 GM |
5677 | } |
5678 | } | |
d0d6b7c5 JB |
5679 | else |
5680 | { | |
0ff69270 | 5681 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5682 | proc = process_sent_to; |
6b61353c | 5683 | p = XPROCESS (proc); |
6bfd98e7 | 5684 | p->raw_status_new = 0; |
6b61353c | 5685 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); |
60f0fb11 | 5686 | p->tick = ++process_tick; |
d0d6b7c5 | 5687 | deactivate_process (proc); |
6b61353c | 5688 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5689 | } |
6044e593 RS |
5690 | |
5691 | UNGCPRO; | |
d0d6b7c5 JB |
5692 | } |
5693 | ||
5694 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5695 | 3, 3, 0, |
5696 | doc: /* Send current contents of region as input to PROCESS. | |
5697 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5698 | nil, indicating the current buffer's process. | |
5699 | Called from program, takes three arguments, PROCESS, START and END. | |
5700 | If the region is more than 500 characters long, | |
5701 | it is sent in several bunches. This may happen even for shorter regions. | |
5702 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5703 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5704 | { |
5705 | Lisp_Object proc; | |
1b234f64 | 5706 | int start1, end1; |
d0d6b7c5 JB |
5707 | |
5708 | proc = get_process (process); | |
5709 | validate_region (&start, &end); | |
1b234f64 KH |
5710 | |
5711 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5712 | move_gap (XINT (start)); | |
5713 | ||
5714 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5715 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5716 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
5717 | Fcurrent_buffer ()); | |
5718 | ||
d0d6b7c5 JB |
5719 | return Qnil; |
5720 | } | |
5721 | ||
5722 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5723 | 2, 2, 0, |
5724 | doc: /* Send PROCESS the contents of STRING as input. | |
5725 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5726 | nil, indicating the current buffer's process. | |
5727 | If STRING is more than 500 characters long, | |
5728 | it is sent in several bunches. This may happen even for shorter strings. | |
5729 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5730 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5731 | { |
5732 | Lisp_Object proc; | |
b7826503 | 5733 | CHECK_STRING (string); |
d0d6b7c5 | 5734 | proc = get_process (process); |
1b234f64 KH |
5735 | send_process (proc, SDATA (string), |
5736 | SBYTES (string), string); | |
d0d6b7c5 JB |
5737 | return Qnil; |
5738 | } | |
5739 | \f | |
16782258 JD |
5740 | /* Return the foreground process group for the tty/pty that |
5741 | the process P uses. */ | |
5742 | static int | |
d3da34e0 | 5743 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 JD |
5744 | { |
5745 | int gid = -1; | |
5746 | ||
f3d9532b | 5747 | #ifdef TIOCGPGRP |
60f0fb11 | 5748 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5749 | { |
5750 | int fd; | |
5751 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5752 | master side. Try the slave side. */ | |
eef60308 | 5753 | fd = emacs_open (SDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5754 | |
5755 | if (fd != -1) | |
5756 | { | |
5757 | ioctl (fd, TIOCGPGRP, &gid); | |
5758 | emacs_close (fd); | |
5759 | } | |
5760 | } | |
5761 | #endif /* defined (TIOCGPGRP ) */ | |
5762 | ||
5763 | return gid; | |
5764 | } | |
5765 | ||
b81ea5ef RS |
5766 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5767 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5768 | doc: /* Return t if PROCESS has given the terminal to a child. |
5769 | If the operating system does not make it possible to find out, | |
5770 | return t unconditionally. */) | |
5842a27b | 5771 | (Lisp_Object process) |
b81ea5ef RS |
5772 | { |
5773 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5774 | in a way that will cause returning t. */ | |
16782258 | 5775 | int gid; |
b81ea5ef RS |
5776 | Lisp_Object proc; |
5777 | struct Lisp_Process *p; | |
5778 | ||
5779 | proc = get_process (process); | |
5780 | p = XPROCESS (proc); | |
5781 | ||
d888760c | 5782 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5783 | error ("Process %s is not a subprocess", |
d5db4077 | 5784 | SDATA (p->name)); |
60f0fb11 | 5785 | if (p->infd < 0) |
b81ea5ef | 5786 | error ("Process %s is not active", |
d5db4077 | 5787 | SDATA (p->name)); |
b81ea5ef | 5788 | |
16782258 | 5789 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5790 | |
6bfd98e7 | 5791 | if (gid == p->pid) |
b81ea5ef RS |
5792 | return Qnil; |
5793 | return Qt; | |
5794 | } | |
5795 | \f | |
d0d6b7c5 | 5796 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5797 | If CURRENT_GROUP is t, that means send to the process group |
5798 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5799 | This is used for various commands in shell mode. |
b81ea5ef RS |
5800 | If CURRENT_GROUP is lambda, that means send to the process group |
5801 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5802 | ||
d0d6b7c5 | 5803 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5804 | right away. |
5805 | ||
5806 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5807 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5808 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5809 | |
f9738840 | 5810 | static void |
d3da34e0 JB |
5811 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5812 | int nomsg) | |
d0d6b7c5 JB |
5813 | { |
5814 | Lisp_Object proc; | |
5815 | register struct Lisp_Process *p; | |
5816 | int gid; | |
5817 | int no_pgrp = 0; | |
5818 | ||
5819 | proc = get_process (process); | |
5820 | p = XPROCESS (proc); | |
5821 | ||
d888760c | 5822 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5823 | error ("Process %s is not a subprocess", |
d5db4077 | 5824 | SDATA (p->name)); |
60f0fb11 | 5825 | if (p->infd < 0) |
d0d6b7c5 | 5826 | error ("Process %s is not active", |
d5db4077 | 5827 | SDATA (p->name)); |
d0d6b7c5 | 5828 | |
60f0fb11 | 5829 | if (!p->pty_flag) |
d0d6b7c5 JB |
5830 | current_group = Qnil; |
5831 | ||
d0d6b7c5 | 5832 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5833 | if (NILP (current_group)) |
5834 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5835 | gid = p->pid; |
2af70a0c | 5836 | else |
d0d6b7c5 | 5837 | { |
b0310da4 | 5838 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5839 | /* If possible, send signals to the entire pgrp |
5840 | by sending an input character to it. */ | |
b0310da4 | 5841 | |
6be429b1 | 5842 | /* TERMIOS is the latest and bestest, and seems most likely to |
63136da6 | 5843 | work. If the system has it, use it. */ |
6be429b1 JB |
5844 | #ifdef HAVE_TERMIOS |
5845 | struct termios t; | |
7f916a36 RS |
5846 | cc_t *sig_char = NULL; |
5847 | ||
60f0fb11 | 5848 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5849 | |
5850 | switch (signo) | |
5851 | { | |
5852 | case SIGINT: | |
7f916a36 RS |
5853 | sig_char = &t.c_cc[VINTR]; |
5854 | break; | |
6be429b1 JB |
5855 | |
5856 | case SIGQUIT: | |
7f916a36 RS |
5857 | sig_char = &t.c_cc[VQUIT]; |
5858 | break; | |
6be429b1 JB |
5859 | |
5860 | case SIGTSTP: | |
d0adf46f | 5861 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5862 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5863 | #else |
7f916a36 | 5864 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5865 | #endif |
7f916a36 | 5866 | break; |
6be429b1 JB |
5867 | } |
5868 | ||
ca4313d5 | 5869 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5870 | { |
5871 | send_process (proc, sig_char, 1, Qnil); | |
5872 | return; | |
5873 | } | |
5874 | /* If we can't send the signal with a character, | |
5875 | fall through and send it another way. */ | |
6be429b1 JB |
5876 | #else /* ! HAVE_TERMIOS */ |
5877 | ||
b0310da4 JB |
5878 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5879 | current control characters. */ | |
d0d6b7c5 | 5880 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5881 | |
d0d6b7c5 JB |
5882 | struct tchars c; |
5883 | struct ltchars lc; | |
5884 | ||
5885 | switch (signo) | |
5886 | { | |
5887 | case SIGINT: | |
60f0fb11 | 5888 | ioctl (p->infd, TIOCGETC, &c); |
4556b700 | 5889 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 5890 | return; |
d0d6b7c5 | 5891 | case SIGQUIT: |
60f0fb11 | 5892 | ioctl (p->infd, TIOCGETC, &c); |
4556b700 | 5893 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 5894 | return; |
0ad77c54 | 5895 | #ifdef SIGTSTP |
d0d6b7c5 | 5896 | case SIGTSTP: |
60f0fb11 | 5897 | ioctl (p->infd, TIOCGLTC, &lc); |
4556b700 | 5898 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 5899 | return; |
b0310da4 | 5900 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5901 | } |
b0310da4 JB |
5902 | |
5903 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
5904 | ||
5905 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
5906 | characters. */ | |
5907 | #ifdef TCGETA | |
d0d6b7c5 JB |
5908 | struct termio t; |
5909 | switch (signo) | |
5910 | { | |
5911 | case SIGINT: | |
60f0fb11 | 5912 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 5913 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 5914 | return; |
d0d6b7c5 | 5915 | case SIGQUIT: |
60f0fb11 | 5916 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 5917 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 5918 | return; |
7d79e3b4 | 5919 | #ifdef SIGTSTP |
d0d6b7c5 | 5920 | case SIGTSTP: |
60f0fb11 | 5921 | ioctl (p->infd, TCGETA, &t); |
4556b700 | 5922 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 5923 | return; |
b0310da4 | 5924 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5925 | } |
b0310da4 JB |
5926 | #else /* ! defined (TCGETA) */ |
5927 | Your configuration files are messed up. | |
5928 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
5929 | you'd better be using one of the alternatives above! */ | |
5930 | #endif /* ! defined (TCGETA) */ | |
5931 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
eef60308 | 5932 | /* In this case, the code above should alway return. */ |
20505336 | 5933 | abort (); |
f1c206fc RS |
5934 | #endif /* ! defined HAVE_TERMIOS */ |
5935 | ||
5936 | /* The code above may fall through if it can't | |
5937 | handle the signal. */ | |
20505336 | 5938 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5939 | |
177c0ea7 | 5940 | #ifdef TIOCGPGRP |
2af70a0c | 5941 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5942 | Otherwise, use the pty to get the pgrp. |
5943 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5944 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5945 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5946 | His patch indicates that if TIOCGPGRP returns an error, then |
5947 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5948 | |
16782258 | 5949 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5950 | |
16782258 JD |
5951 | if (gid == -1) |
5952 | /* If we can't get the information, assume | |
5953 | the shell owns the tty. */ | |
6bfd98e7 | 5954 | gid = p->pid; |
2af70a0c RS |
5955 | |
5956 | /* It is not clear whether anything really can set GID to -1. | |
5957 | Perhaps on some system one of those ioctls can or could do so. | |
5958 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5959 | if (gid == -1) |
5960 | no_pgrp = 1; | |
b0310da4 | 5961 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5962 | /* Can't select pgrps on this system, so we know that |
5963 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5964 | gid = p->pid; |
301c3fe4 | 5965 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5966 | |
5967 | /* If current_group is lambda, and the shell owns the terminal, | |
5968 | don't send any signal. */ | |
6bfd98e7 | 5969 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5970 | return; |
d0d6b7c5 | 5971 | } |
d0d6b7c5 JB |
5972 | |
5973 | switch (signo) | |
5974 | { | |
5975 | #ifdef SIGCONT | |
5976 | case SIGCONT: | |
6bfd98e7 | 5977 | p->raw_status_new = 0; |
d0d6b7c5 | 5978 | p->status = Qrun; |
60f0fb11 | 5979 | p->tick = ++process_tick; |
d0d6b7c5 | 5980 | if (!nomsg) |
e42bdf01 CY |
5981 | { |
5982 | status_notify (NULL); | |
5983 | redisplay_preserve_echo_area (13); | |
5984 | } | |
d0d6b7c5 | 5985 | break; |
301c3fe4 | 5986 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 5987 | case SIGINT: |
d0d6b7c5 | 5988 | case SIGQUIT: |
d0d6b7c5 | 5989 | case SIGKILL: |
60f0fb11 | 5990 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5991 | break; |
5992 | } | |
5993 | ||
5994 | /* If we don't have process groups, send the signal to the immediate | |
5995 | subprocess. That isn't really right, but it's better than any | |
5996 | obvious alternative. */ | |
5997 | if (no_pgrp) | |
5998 | { | |
6bfd98e7 | 5999 | kill (p->pid, signo); |
d0d6b7c5 JB |
6000 | return; |
6001 | } | |
6002 | ||
6003 | /* gid may be a pid, or minus a pgrp's number */ | |
6004 | #ifdef TIOCSIGSEND | |
6005 | if (!NILP (current_group)) | |
16782258 | 6006 | { |
60f0fb11 | 6007 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
6008 | EMACS_KILLPG (gid, signo); |
6009 | } | |
d0d6b7c5 JB |
6010 | else |
6011 | { | |
6bfd98e7 | 6012 | gid = - p->pid; |
d0d6b7c5 JB |
6013 | kill (gid, signo); |
6014 | } | |
301c3fe4 | 6015 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 6016 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 6017 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
6018 | } |
6019 | ||
6020 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
6021 | doc: /* Interrupt process PROCESS. |
6022 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 6023 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
6024 | Second arg CURRENT-GROUP non-nil means send signal to |
6025 | the current process-group of the process's controlling terminal | |
6026 | rather than to the process's own process group. | |
6027 | If the process is a shell, this means interrupt current subjob | |
6028 | rather than the shell. | |
6029 | ||
6030 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
6031 | don't send the signal. */) | |
5842a27b | 6032 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6033 | { |
6034 | process_send_signal (process, SIGINT, current_group, 0); | |
6035 | return process; | |
6036 | } | |
6037 | ||
6038 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
6039 | doc: /* Kill process PROCESS. May be process or name of one. |
6040 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 6041 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6042 | { |
6043 | process_send_signal (process, SIGKILL, current_group, 0); | |
6044 | return process; | |
6045 | } | |
6046 | ||
6047 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
6048 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
6049 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 6050 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
6051 | { |
6052 | process_send_signal (process, SIGQUIT, current_group, 0); | |
6053 | return process; | |
6054 | } | |
6055 | ||
6056 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 6057 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 6058 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6059 | If PROCESS is a network or serial process, inhibit handling of incoming |
6060 | traffic. */) | |
5842a27b | 6061 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6062 | { |
e690ca94 | 6063 | #ifdef HAVE_SOCKETS |
d888760c | 6064 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6065 | { |
6066 | struct Lisp_Process *p; | |
177c0ea7 | 6067 | |
e690ca94 KS |
6068 | p = XPROCESS (process); |
6069 | if (NILP (p->command) | |
60f0fb11 | 6070 | && p->infd >= 0) |
e690ca94 | 6071 | { |
60f0fb11 SM |
6072 | FD_CLR (p->infd, &input_wait_mask); |
6073 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
6074 | } |
6075 | p->command = Qt; | |
6076 | return process; | |
6077 | } | |
6078 | #endif | |
d0d6b7c5 | 6079 | #ifndef SIGTSTP |
a9a73d6c | 6080 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
6081 | #else |
6082 | process_send_signal (process, SIGTSTP, current_group, 0); | |
6083 | #endif | |
6084 | return process; | |
6085 | } | |
6086 | ||
6087 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 6088 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 6089 | See function `interrupt-process' for more details on usage. |
d888760c GM |
6090 | If PROCESS is a network or serial process, resume handling of incoming |
6091 | traffic. */) | |
5842a27b | 6092 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 6093 | { |
e690ca94 | 6094 | #ifdef HAVE_SOCKETS |
d888760c | 6095 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
6096 | { |
6097 | struct Lisp_Process *p; | |
6098 | ||
6099 | p = XPROCESS (process); | |
6100 | if (EQ (p->command, Qt) | |
60f0fb11 | 6101 | && p->infd >= 0 |
e690ca94 KS |
6102 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
6103 | { | |
60f0fb11 SM |
6104 | FD_SET (p->infd, &input_wait_mask); |
6105 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
6106 | #ifdef WINDOWSNT |
6107 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
6108 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
6109 | #endif | |
6110 | #ifdef HAVE_TERMIOS | |
6111 | tcflush (p->infd, TCIFLUSH); | |
6112 | #endif | |
e690ca94 KS |
6113 | } |
6114 | p->command = Qnil; | |
6115 | return process; | |
6116 | } | |
6117 | #endif | |
d0d6b7c5 JB |
6118 | #ifdef SIGCONT |
6119 | process_send_signal (process, SIGCONT, current_group, 0); | |
6120 | #else | |
a9a73d6c | 6121 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6122 | #endif |
6123 | return process; | |
6124 | } | |
6125 | ||
6126 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6127 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6128 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6129 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6130 | process to signal; in this case, the process need not be a child of |
6131 | this Emacs. | |
fdb82f93 | 6132 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6133 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6134 | { |
6bfd98e7 | 6135 | pid_t pid; |
cdd5ea86 KS |
6136 | |
6137 | if (INTEGERP (process)) | |
6138 | { | |
6bfd98e7 SM |
6139 | pid = XINT (process); |
6140 | goto got_it; | |
6141 | } | |
6142 | ||
6143 | if (FLOATP (process)) | |
6144 | { | |
648f6edf | 6145 | pid = (pid_t) XFLOAT_DATA (process); |
cdd5ea86 KS |
6146 | goto got_it; |
6147 | } | |
6148 | ||
6149 | if (STRINGP (process)) | |
6150 | { | |
6151 | Lisp_Object tem; | |
6152 | if (tem = Fget_process (process), NILP (tem)) | |
6153 | { | |
6bfd98e7 SM |
6154 | pid = XINT (Fstring_to_number (process, make_number (10))); |
6155 | if (pid > 0) | |
cdd5ea86 KS |
6156 | goto got_it; |
6157 | } | |
6158 | process = tem; | |
6159 | } | |
6160 | else | |
6161 | process = get_process (process); | |
177c0ea7 | 6162 | |
cdd5ea86 KS |
6163 | if (NILP (process)) |
6164 | return process; | |
6165 | ||
6166 | CHECK_PROCESS (process); | |
6167 | pid = XPROCESS (process)->pid; | |
6bfd98e7 | 6168 | if (pid <= 0) |
cdd5ea86 KS |
6169 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
6170 | ||
6171 | got_it: | |
4766242d | 6172 | |
59324b1d | 6173 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6174 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6175 | XSETINT (sigcode, VALUE) |
6176 | ||
6177 | if (INTEGERP (sigcode)) | |
6178 | ; | |
6179 | else | |
6180 | { | |
6181 | unsigned char *name; | |
6182 | ||
b7826503 | 6183 | CHECK_SYMBOL (sigcode); |
d5db4077 | 6184 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6185 | |
ed3751c8 | 6186 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6187 | name += 3; |
6188 | ||
4766242d RS |
6189 | if (0) |
6190 | ; | |
59324b1d KS |
6191 | #ifdef SIGUSR1 |
6192 | parse_signal ("usr1", SIGUSR1); | |
6193 | #endif | |
6194 | #ifdef SIGUSR2 | |
6195 | parse_signal ("usr2", SIGUSR2); | |
6196 | #endif | |
6197 | #ifdef SIGTERM | |
6198 | parse_signal ("term", SIGTERM); | |
6199 | #endif | |
4766242d | 6200 | #ifdef SIGHUP |
59324b1d | 6201 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6202 | #endif |
6203 | #ifdef SIGINT | |
59324b1d | 6204 | parse_signal ("int", SIGINT); |
4766242d RS |
6205 | #endif |
6206 | #ifdef SIGQUIT | |
59324b1d | 6207 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6208 | #endif |
6209 | #ifdef SIGILL | |
59324b1d | 6210 | parse_signal ("ill", SIGILL); |
4766242d RS |
6211 | #endif |
6212 | #ifdef SIGABRT | |
59324b1d | 6213 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6214 | #endif |
6215 | #ifdef SIGEMT | |
59324b1d | 6216 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6217 | #endif |
6218 | #ifdef SIGKILL | |
59324b1d | 6219 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6220 | #endif |
6221 | #ifdef SIGFPE | |
59324b1d | 6222 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6223 | #endif |
6224 | #ifdef SIGBUS | |
59324b1d | 6225 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6226 | #endif |
6227 | #ifdef SIGSEGV | |
59324b1d | 6228 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6229 | #endif |
6230 | #ifdef SIGSYS | |
59324b1d | 6231 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6232 | #endif |
6233 | #ifdef SIGPIPE | |
59324b1d | 6234 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6235 | #endif |
6236 | #ifdef SIGALRM | |
59324b1d | 6237 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6238 | #endif |
6239 | #ifdef SIGURG | |
59324b1d | 6240 | parse_signal ("urg", SIGURG); |
4766242d RS |
6241 | #endif |
6242 | #ifdef SIGSTOP | |
59324b1d | 6243 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6244 | #endif |
6245 | #ifdef SIGTSTP | |
59324b1d | 6246 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6247 | #endif |
6248 | #ifdef SIGCONT | |
59324b1d | 6249 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6250 | #endif |
6251 | #ifdef SIGCHLD | |
59324b1d | 6252 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6253 | #endif |
6254 | #ifdef SIGTTIN | |
59324b1d | 6255 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6256 | #endif |
6257 | #ifdef SIGTTOU | |
59324b1d | 6258 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6259 | #endif |
6260 | #ifdef SIGIO | |
59324b1d | 6261 | parse_signal ("io", SIGIO); |
4766242d RS |
6262 | #endif |
6263 | #ifdef SIGXCPU | |
59324b1d | 6264 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6265 | #endif |
6266 | #ifdef SIGXFSZ | |
59324b1d | 6267 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6268 | #endif |
6269 | #ifdef SIGVTALRM | |
59324b1d | 6270 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6271 | #endif |
6272 | #ifdef SIGPROF | |
59324b1d | 6273 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6274 | #endif |
6275 | #ifdef SIGWINCH | |
59324b1d | 6276 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6277 | #endif |
6278 | #ifdef SIGINFO | |
59324b1d | 6279 | parse_signal ("info", SIGINFO); |
4766242d RS |
6280 | #endif |
6281 | else | |
9fa195a2 | 6282 | error ("Undefined signal name %s", name); |
4766242d RS |
6283 | } |
6284 | ||
59324b1d | 6285 | #undef parse_signal |
4766242d | 6286 | |
6bfd98e7 | 6287 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6288 | } |
6289 | ||
6290 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6291 | doc: /* Make PROCESS see end-of-file in its input. |
6292 | EOF comes after any text already sent to it. | |
6293 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6294 | nil, indicating the current buffer's process. | |
6295 | If PROCESS is a network connection, or is a process communicating | |
6296 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6297 | text to PROCESS after you call this function. |
6298 | If PROCESS is a serial process, wait until all output written to the | |
6299 | process has been transmitted to the serial port. */) | |
5842a27b | 6300 | (Lisp_Object process) |
d0d6b7c5 JB |
6301 | { |
6302 | Lisp_Object proc; | |
de7fbd09 | 6303 | struct coding_system *coding; |
d0d6b7c5 | 6304 | |
e690ca94 KS |
6305 | if (DATAGRAM_CONN_P (process)) |
6306 | return process; | |
6307 | ||
d0d6b7c5 | 6308 | proc = get_process (process); |
60f0fb11 | 6309 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6310 | |
6311 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6312 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 RS |
6313 | update_status (XPROCESS (proc)); |
6314 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6315 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6316 | |
de7fbd09 KH |
6317 | if (CODING_REQUIRE_FLUSHING (coding)) |
6318 | { | |
6319 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6320 | send_process (proc, "", 0, Qnil); | |
6321 | } | |
6322 | ||
60f0fb11 | 6323 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6324 | send_process (proc, "\004", 1, Qnil); |
a879ee6f | 6325 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c GM |
6326 | { |
6327 | #ifdef HAVE_TERMIOS | |
6328 | if (tcdrain (XPROCESS (proc)->outfd) != 0) | |
6329 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
6330 | #endif | |
6331 | /* Do nothing on Windows because writes are blocking. */ | |
6332 | } | |
d0d6b7c5 JB |
6333 | else |
6334 | { | |
4525f571 RS |
6335 | int old_outfd, new_outfd; |
6336 | ||
93853f3d | 6337 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6338 | /* If this is a network connection, or socketpair is used |
6339 | for communication with the subprocess, call shutdown to cause EOF. | |
6340 | (In some old system, shutdown to socketpair doesn't work. | |
6341 | Then we just can't win.) */ | |
a879ee6f | 6342 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6343 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6344 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6345 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6346 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6347 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6348 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6349 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6350 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6351 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6352 | if (new_outfd < 0) |
6353 | abort (); | |
60f0fb11 | 6354 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6355 | |
6356 | if (!proc_encode_coding_system[new_outfd]) | |
6357 | proc_encode_coding_system[new_outfd] | |
6358 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
72af86bd AS |
6359 | memcpy (proc_encode_coding_system[new_outfd], |
6360 | proc_encode_coding_system[old_outfd], | |
6361 | sizeof (struct coding_system)); | |
6362 | memset (proc_encode_coding_system[old_outfd], 0, | |
6363 | sizeof (struct coding_system)); | |
4525f571 | 6364 | |
60f0fb11 | 6365 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6366 | } |
d0d6b7c5 JB |
6367 | return process; |
6368 | } | |
d0d6b7c5 | 6369 | \f |
3fed8ad5 GM |
6370 | /* On receipt of a signal that a child status has changed, loop asking |
6371 | about children with changed statuses until the system says there | |
6372 | are no more. | |
177c0ea7 | 6373 | |
3fed8ad5 GM |
6374 | All we do is change the status; we do not run sentinels or print |
6375 | notifications. That is saved for the next time keyboard input is | |
6376 | done, in order to avoid timing errors. | |
6377 | ||
6378 | ** WARNING: this can be called during garbage collection. | |
6379 | Therefore, it must not be fooled by the presence of mark bits in | |
6380 | Lisp objects. | |
6381 | ||
6382 | ** USG WARNING: Although it is not obvious from the documentation | |
6383 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6384 | signal() before executing at least one wait(), otherwise the | |
6385 | handler will be called again, resulting in an infinite loop. The | |
6386 | relevant portion of the documentation reads "SIGCLD signals will be | |
6387 | queued and the signal-catching function will be continually | |
6388 | reentered until the queue is empty". Invoking signal() causes the | |
6389 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6390 | Inc. |
6391 | ||
6392 | ** Malloc WARNING: This should never call malloc either directly or | |
6393 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6394 | |
a5cfdda8 | 6395 | #ifdef SIGCHLD |
d0d6b7c5 | 6396 | SIGTYPE |
d3da34e0 | 6397 | sigchld_handler (int signo) |
d0d6b7c5 JB |
6398 | { |
6399 | int old_errno = errno; | |
6400 | Lisp_Object proc; | |
6401 | register struct Lisp_Process *p; | |
6be429b1 | 6402 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 | 6403 | |
333f1b6f JD |
6404 | SIGNAL_THREAD_CHECK (signo); |
6405 | ||
d0d6b7c5 JB |
6406 | while (1) |
6407 | { | |
8e050977 | 6408 | pid_t pid; |
bba104c1 | 6409 | int w; |
d0d6b7c5 JB |
6410 | Lisp_Object tail; |
6411 | ||
6412 | #ifdef WNOHANG | |
6413 | #ifndef WUNTRACED | |
6414 | #define WUNTRACED 0 | |
6415 | #endif /* no WUNTRACED */ | |
6416 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 | 6417 | do |
63136da6 | 6418 | { |
29ed4d51 CY |
6419 | errno = 0; |
6420 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
29ed4d51 | 6421 | } |
e7d4a904 | 6422 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6423 | |
6424 | if (pid <= 0) | |
6425 | { | |
3fed8ad5 GM |
6426 | /* PID == 0 means no processes found, PID == -1 means a real |
6427 | failure. We have done all our job, so return. */ | |
d0d6b7c5 | 6428 | |
d0d6b7c5 JB |
6429 | errno = old_errno; |
6430 | return; | |
6431 | } | |
6432 | #else | |
6433 | pid = wait (&w); | |
6434 | #endif /* no WNOHANG */ | |
6435 | ||
6436 | /* Find the process that signaled us, and record its status. */ | |
6437 | ||
a5cfdda8 | 6438 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6439 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6440 | { |
8e050977 | 6441 | Lisp_Object xpid = XCAR (tail); |
8e50cc2d SM |
6442 | if ((INTEGERP (xpid) && pid == (pid_t) XINT (xpid)) |
6443 | || (FLOATP (xpid) && pid == (pid_t) XFLOAT_DATA (xpid))) | |
8e050977 CY |
6444 | { |
6445 | XSETCAR (tail, Qnil); | |
6446 | goto sigchld_end_of_loop; | |
6447 | } | |
a5cfdda8 KS |
6448 | } |
6449 | ||
6450 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6451 | p = 0; |
8e50cc2d | 6452 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6453 | { |
70949dac | 6454 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6455 | p = XPROCESS (proc); |
d888760c | 6456 | if (EQ (p->type, Qreal) && p->pid == pid) |
d0d6b7c5 JB |
6457 | break; |
6458 | p = 0; | |
6459 | } | |
6460 | ||
6461 | /* Look for an asynchronous process whose pid hasn't been filled | |
6462 | in yet. */ | |
6463 | if (p == 0) | |
8e50cc2d | 6464 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6465 | { |
70949dac | 6466 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6467 | p = XPROCESS (proc); |
6bfd98e7 | 6468 | if (p->pid == -1) |
d0d6b7c5 JB |
6469 | break; |
6470 | p = 0; | |
6471 | } | |
177c0ea7 | 6472 | |
d0d6b7c5 JB |
6473 | /* Change the status of the process that was found. */ |
6474 | if (p != 0) | |
6475 | { | |
e98d950b | 6476 | int clear_desc_flag = 0; |
177c0ea7 | 6477 | |
60f0fb11 | 6478 | p->tick = ++process_tick; |
bba104c1 | 6479 | p->raw_status = w; |
6bfd98e7 | 6480 | p->raw_status_new = 1; |
177c0ea7 | 6481 | |
d0d6b7c5 | 6482 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6483 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6484 | && p->infd >= 0) |
e98d950b RS |
6485 | clear_desc_flag = 1; |
6486 | ||
6487 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6488 | if (clear_desc_flag) | |
6489 | { | |
60f0fb11 SM |
6490 | FD_CLR (p->infd, &input_wait_mask); |
6491 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6492 | } |
6be429b1 | 6493 | |
214d6069 | 6494 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6495 | look around. */ |
6496 | if (input_available_clear_time) | |
6497 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6498 | } |
6499 | ||
a5cfdda8 KS |
6500 | /* There was no asynchronous process found for that pid: we have |
6501 | a synchronous process. */ | |
d0d6b7c5 JB |
6502 | else |
6503 | { | |
6504 | synch_process_alive = 0; | |
6505 | ||
6506 | /* Report the status of the synchronous process. */ | |
6507 | if (WIFEXITED (w)) | |
6508 | synch_process_retcode = WRETCODE (w); | |
6509 | else if (WIFSIGNALED (w)) | |
63136da6 | 6510 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6511 | |
214d6069 | 6512 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6513 | look around. */ |
6514 | if (input_available_clear_time) | |
6515 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6516 | } |
6517 | ||
a5cfdda8 KS |
6518 | sigchld_end_of_loop: |
6519 | ; | |
6520 | ||
d0d6b7c5 JB |
6521 | /* On some systems, we must return right away. |
6522 | If any more processes want to signal us, we will | |
6523 | get another signal. | |
6524 | Otherwise (on systems that have WNOHANG), loop around | |
6525 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6526 | #if (defined WINDOWSNT \ |
8a2a6032 | 6527 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6528 | && !(defined HPUX && defined WNOHANG))) |
d0d6b7c5 JB |
6529 | errno = old_errno; |
6530 | return; | |
6531 | #endif /* USG, but not HPUX with WNOHANG */ | |
6532 | } | |
6533 | } | |
a5cfdda8 | 6534 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6535 | \f |
6536 | ||
6537 | static Lisp_Object | |
d3da34e0 | 6538 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6539 | { |
70949dac | 6540 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6541 | return Qnil; |
6542 | } | |
6543 | ||
3b9a3dfa | 6544 | static Lisp_Object |
d3da34e0 | 6545 | exec_sentinel_error_handler (Lisp_Object error) |
3b9a3dfa RS |
6546 | { |
6547 | cmd_error_internal (error, "error in process sentinel: "); | |
6548 | Vinhibit_quit = Qt; | |
6549 | update_echo_area (); | |
833ba342 | 6550 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6551 | return Qt; |
3b9a3dfa RS |
6552 | } |
6553 | ||
d0d6b7c5 | 6554 | static void |
d3da34e0 | 6555 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6556 | { |
dfc21838 | 6557 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6558 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6559 | int count = SPECPDL_INDEX (); |
4da2f5be | 6560 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6561 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6562 | |
84af9896 RS |
6563 | if (inhibit_sentinels) |
6564 | return; | |
6565 | ||
dfc21838 RS |
6566 | /* No need to gcpro these, because all we do with them later |
6567 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6568 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6569 | XSETBUFFER (obuffer, current_buffer); |
6570 | okeymap = current_buffer->keymap; | |
6571 | ||
97e53006 SM |
6572 | /* There's no good reason to let sentinels change the current |
6573 | buffer, and many callers of accept-process-output, sit-for, and | |
6574 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 6575 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
97e53006 | 6576 | |
d0d6b7c5 JB |
6577 | sentinel = p->sentinel; |
6578 | if (NILP (sentinel)) | |
6579 | return; | |
6580 | ||
6581 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6582 | assure that it gets restored no matter how the sentinel exits. */ | |
6583 | p->sentinel = Qnil; | |
6584 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6585 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6586 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6587 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6588 | |
4da2f5be RS |
6589 | /* In case we get recursively called, |
6590 | and we already saved the match data nonrecursively, | |
6591 | save the same match data in safely recursive fashion. */ | |
6592 | if (outer_running_asynch_code) | |
6593 | { | |
6594 | Lisp_Object tem; | |
89f2614d KS |
6595 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6596 | restore_search_regs (); | |
6597 | record_unwind_save_match_data (); | |
6598 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6599 | } |
6600 | ||
6601 | /* For speed, if a search happens within this code, | |
6602 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6603 | running_asynch_code = 1; |
4da2f5be | 6604 | |
3b9a3dfa RS |
6605 | internal_condition_case_1 (read_process_output_call, |
6606 | Fcons (sentinel, | |
6607 | Fcons (proc, Fcons (reason, Qnil))), | |
6608 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6609 | exec_sentinel_error_handler); | |
4da2f5be RS |
6610 | |
6611 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6612 | restore_search_regs (); |
4da2f5be | 6613 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6614 | |
6615 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6616 | |
6617 | /* Restore waiting_for_user_input_p as it was | |
6618 | when we were called, in case the filter clobbered it. */ | |
6619 | waiting_for_user_input_p = waiting; | |
6620 | ||
7973cfa8 | 6621 | #if 0 |
dfc21838 RS |
6622 | if (! EQ (Fcurrent_buffer (), obuffer) |
6623 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6624 | #endif |
927e08be RS |
6625 | /* But do it only if the caller is actually going to read events. |
6626 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6627 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6628 | if (waiting_for_user_input_p == -1) |
6629 | record_asynch_buffer_change (); | |
8fb3cf64 | 6630 | |
2ea6d561 | 6631 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6632 | } |
6633 | ||
6634 | /* Report all recent events of a change in process status | |
6635 | (either run the sentinel or output a message). | |
b50fe468 RS |
6636 | This is usually done while Emacs is waiting for keyboard input |
6637 | but can be done at other times. */ | |
d0d6b7c5 | 6638 | |
ff6daed3 | 6639 | static void |
d3da34e0 | 6640 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6641 | { |
6642 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6643 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6644 | struct gcpro gcpro1, gcpro2; |
6645 | ||
2e4149a8 KH |
6646 | tail = Qnil; |
6647 | msg = Qnil; | |
d0d6b7c5 JB |
6648 | /* We need to gcpro tail; if read_process_output calls a filter |
6649 | which deletes a process and removes the cons to which tail points | |
6650 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6651 | reference. */ | |
6652 | GCPRO2 (tail, msg); | |
6653 | ||
30623085 RS |
6654 | /* Set this now, so that if new processes are created by sentinels |
6655 | that we run, we get called again to handle their status changes. */ | |
6656 | update_tick = process_tick; | |
6657 | ||
99784d63 | 6658 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6659 | { |
30623085 RS |
6660 | Lisp_Object symbol; |
6661 | register struct Lisp_Process *p; | |
6662 | ||
99784d63 | 6663 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6664 | p = XPROCESS (proc); |
6665 | ||
60f0fb11 | 6666 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6667 | { |
60f0fb11 | 6668 | p->update_tick = p->tick; |
d0d6b7c5 | 6669 | |
30623085 | 6670 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6671 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6672 | && ! EQ (p->status, Qconnect) |
e690ca94 | 6673 | && ! EQ (p->status, Qlisten) |
d888760c GM |
6674 | /* Network or serial process not stopped: */ |
6675 | && ! EQ (p->command, Qt) | |
60f0fb11 | 6676 | && p->infd >= 0 |
ff6daed3 | 6677 | && p != deleting_process |
60f0fb11 | 6678 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6679 | |
30623085 | 6680 | buffer = p->buffer; |
d0d6b7c5 | 6681 | |
30623085 | 6682 | /* Get the text to use for the message. */ |
6bfd98e7 | 6683 | if (p->raw_status_new) |
30623085 | 6684 | update_status (p); |
116c423c | 6685 | msg = status_message (p); |
d0d6b7c5 | 6686 | |
30623085 RS |
6687 | /* If process is terminated, deactivate it or delete it. */ |
6688 | symbol = p->status; | |
6689 | if (CONSP (p->status)) | |
70949dac | 6690 | symbol = XCAR (p->status); |
d0d6b7c5 | 6691 | |
30623085 RS |
6692 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6693 | || EQ (symbol, Qclosed)) | |
6694 | { | |
6695 | if (delete_exited_processes) | |
6696 | remove_process (proc); | |
6697 | else | |
6698 | deactivate_process (proc); | |
6699 | } | |
d0d6b7c5 | 6700 | |
0ad61fe7 RS |
6701 | /* The actions above may have further incremented p->tick. |
6702 | So set p->update_tick again | |
6703 | so that an error in the sentinel will not cause | |
6704 | this code to be run again. */ | |
60f0fb11 | 6705 | p->update_tick = p->tick; |
30623085 RS |
6706 | /* Now output the message suitably. */ |
6707 | if (!NILP (p->sentinel)) | |
6708 | exec_sentinel (proc, msg); | |
6709 | /* Don't bother with a message in the buffer | |
6710 | when a process becomes runnable. */ | |
6711 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6712 | { | |
01f5787b | 6713 | Lisp_Object tem; |
30623085 | 6714 | struct buffer *old = current_buffer; |
d8a2934e RS |
6715 | int opoint, opoint_byte; |
6716 | int before, before_byte; | |
2e4149a8 | 6717 | |
30623085 RS |
6718 | /* Avoid error if buffer is deleted |
6719 | (probably that's why the process is dead, too) */ | |
6720 | if (NILP (XBUFFER (buffer)->name)) | |
6721 | continue; | |
6722 | Fset_buffer (buffer); | |
12ca5cdf | 6723 | |
6ec8bbd2 | 6724 | opoint = PT; |
d8a2934e | 6725 | opoint_byte = PT_BYTE; |
30623085 RS |
6726 | /* Insert new output into buffer |
6727 | at the current end-of-output marker, | |
6728 | thus preserving logical ordering of input and output. */ | |
6729 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6730 | Fgoto_char (p->mark); |
30623085 | 6731 | else |
d8a2934e | 6732 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6733 | |
6734 | before = PT; | |
d8a2934e | 6735 | before_byte = PT_BYTE; |
30623085 RS |
6736 | |
6737 | tem = current_buffer->read_only; | |
6738 | current_buffer->read_only = Qnil; | |
6739 | insert_string ("\nProcess "); | |
6740 | Finsert (1, &p->name); | |
6741 | insert_string (" "); | |
6742 | Finsert (1, &msg); | |
6743 | current_buffer->read_only = tem; | |
d8a2934e | 6744 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6745 | |
12ca5cdf | 6746 | if (opoint >= before) |
d8a2934e RS |
6747 | SET_PT_BOTH (opoint + (PT - before), |
6748 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6749 | else |
d8a2934e | 6750 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6751 | |
30623085 | 6752 | set_buffer_internal (old); |
d0d6b7c5 | 6753 | } |
30623085 RS |
6754 | } |
6755 | } /* end for */ | |
d0d6b7c5 JB |
6756 | |
6757 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6758 | UNGCPRO; |
6759 | } | |
0fa1789e KH |
6760 | |
6761 | \f | |
6762 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6763 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6764 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6765 | DECODING will be used to decode subprocess output and ENCODING to | |
6766 | encode subprocess input. */) | |
5842a27b | 6767 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6768 | { |
6769 | register struct Lisp_Process *p; | |
6770 | ||
f3d9532b JB |
6771 | CHECK_PROCESS (process); |
6772 | p = XPROCESS (process); | |
60f0fb11 | 6773 | if (p->infd < 0) |
d5db4077 | 6774 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6775 | if (p->outfd < 0) |
d5db4077 | 6776 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6777 | Fcheck_coding_system (decoding); |
6778 | Fcheck_coding_system (encoding); | |
76d812bb | 6779 | encoding = coding_inherit_eol_type (encoding, Qnil); |
03f04413 KH |
6780 | p->decode_coding_system = decoding; |
6781 | p->encode_coding_system = encoding; | |
f3d9532b | 6782 | setup_process_coding_systems (process); |
0fa1789e KH |
6783 | |
6784 | return Qnil; | |
6785 | } | |
6786 | ||
6787 | DEFUN ("process-coding-system", | |
6788 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6789 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6790 | (register Lisp_Object process) |
0fa1789e | 6791 | { |
f3d9532b JB |
6792 | CHECK_PROCESS (process); |
6793 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6794 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6795 | } |
03f04413 KH |
6796 | |
6797 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6798 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6799 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6800 | If FLAG is non-nil, the filter is given multibyte strings. | |
6801 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6802 | all character code conversion except for end-of-line conversion is |
6803 | suppressed. */) | |
5842a27b | 6804 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6805 | { |
6806 | register struct Lisp_Process *p; | |
6807 | ||
f3d9532b JB |
6808 | CHECK_PROCESS (process); |
6809 | p = XPROCESS (process); | |
5431bd6a SM |
6810 | if (NILP (flag)) |
6811 | p->decode_coding_system = raw_text_coding_system (p->decode_coding_system); | |
f3d9532b | 6812 | setup_process_coding_systems (process); |
03f04413 KH |
6813 | |
6814 | return Qnil; | |
6815 | } | |
6816 | ||
6817 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6818 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6819 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6820 | (Lisp_Object process) |
03f04413 KH |
6821 | { |
6822 | register struct Lisp_Process *p; | |
5431bd6a | 6823 | struct coding_system *coding; |
03f04413 | 6824 | |
f3d9532b JB |
6825 | CHECK_PROCESS (process); |
6826 | p = XPROCESS (process); | |
5431bd6a SM |
6827 | coding = proc_decode_coding_system[p->infd]; |
6828 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6829 | } |
6830 | ||
6831 | ||
d0d6b7c5 | 6832 | \f |
cb768704 | 6833 | |
994d9841 NR |
6834 | static int add_gpm_wait_descriptor_called_flag; |
6835 | ||
6836 | void | |
d3da34e0 | 6837 | add_gpm_wait_descriptor (int desc) |
994d9841 NR |
6838 | { |
6839 | if (! add_gpm_wait_descriptor_called_flag) | |
6840 | FD_CLR (0, &input_wait_mask); | |
6841 | add_gpm_wait_descriptor_called_flag = 1; | |
6842 | FD_SET (desc, &input_wait_mask); | |
6843 | FD_SET (desc, &gpm_wait_mask); | |
6844 | if (desc > max_gpm_desc) | |
6845 | max_gpm_desc = desc; | |
6846 | } | |
6847 | ||
994d9841 | 6848 | void |
d3da34e0 | 6849 | delete_gpm_wait_descriptor (int desc) |
994d9841 NR |
6850 | { |
6851 | int fd; | |
6852 | int lim = max_gpm_desc; | |
6853 | ||
6854 | FD_CLR (desc, &input_wait_mask); | |
6855 | FD_CLR (desc, &non_process_wait_mask); | |
6856 | ||
6857 | if (desc == max_gpm_desc) | |
6858 | for (fd = 0; fd < lim; fd++) | |
6859 | if (FD_ISSET (fd, &input_wait_mask) | |
6860 | && !FD_ISSET (fd, &non_keyboard_wait_mask) | |
6861 | && !FD_ISSET (fd, &non_process_wait_mask)) | |
6862 | max_gpm_desc = fd; | |
6863 | } | |
6864 | ||
a69281ff RS |
6865 | /* Return nonzero if *MASK has a bit set |
6866 | that corresponds to one of the keyboard input descriptors. */ | |
6867 | ||
ff6daed3 | 6868 | static int |
d3da34e0 | 6869 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6870 | { |
6871 | int fd; | |
6872 | ||
ee8e09af | 6873 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
6874 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6875 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6876 | return 1; | |
6877 | ||
6878 | return 0; | |
6879 | } | |
934e2a68 | 6880 | |
f388c88a | 6881 | #else /* not subprocesses */ |
934e2a68 | 6882 | |
f388c88a EZ |
6883 | /* Defined on msdos.c. */ |
6884 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
6885 | EMACS_TIME *); | |
934e2a68 | 6886 | |
f388c88a EZ |
6887 | /* Implementation of wait_reading_process_output, assuming that there |
6888 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6889 | |
f388c88a | 6890 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6891 | |
f388c88a EZ |
6892 | time_limit is: |
6893 | timeout in seconds, or | |
6894 | zero for no limit, or | |
6895 | -1 means gobble data immediately available but don't wait for any. | |
934e2a68 | 6896 | |
f388c88a EZ |
6897 | read_kbd is a Lisp_Object: |
6898 | 0 to ignore keyboard input, or | |
6899 | 1 to return when input is available, or | |
6900 | -1 means caller will actually read the input, so don't throw to | |
6901 | the quit handler. | |
934e2a68 | 6902 | |
f388c88a EZ |
6903 | see full version for other parameters. We know that wait_proc will |
6904 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6905 | |
f388c88a EZ |
6906 | do_display != 0 means redisplay should be done to show subprocess |
6907 | output that arrives. | |
934e2a68 | 6908 | |
f388c88a EZ |
6909 | Return true if we received input from any process. */ |
6910 | ||
6911 | int | |
1408902e EZ |
6912 | wait_reading_process_output (int time_limit, int microsecs, int read_kbd, |
6913 | int do_display, | |
6914 | Lisp_Object wait_for_cell, | |
6915 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6916 | { |
f388c88a EZ |
6917 | register int nfds; |
6918 | EMACS_TIME end_time, timeout; | |
6919 | SELECT_TYPE waitchannels; | |
6920 | int xerrno; | |
d0d6b7c5 | 6921 | |
f388c88a EZ |
6922 | /* What does time_limit really mean? */ |
6923 | if (time_limit || microsecs) | |
6924 | { | |
6925 | EMACS_GET_TIME (end_time); | |
6926 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
6927 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
6928 | } | |
84af9896 | 6929 | |
f388c88a EZ |
6930 | /* Turn off periodic alarms (in case they are in use) |
6931 | and then turn off any other atimers, | |
6932 | because the select emulator uses alarms. */ | |
6933 | stop_polling (); | |
6934 | turn_on_atimers (0); | |
d0d6b7c5 | 6935 | |
f388c88a EZ |
6936 | while (1) |
6937 | { | |
6938 | int timeout_reduced_for_timers = 0; | |
dd2281ae | 6939 | |
f388c88a EZ |
6940 | /* If calling from keyboard input, do not quit |
6941 | since we want to return C-g as an input character. | |
6942 | Otherwise, do pending quit if requested. */ | |
6943 | if (read_kbd >= 0) | |
6944 | QUIT; | |
bad49fc7 | 6945 | |
f388c88a EZ |
6946 | /* Exit now if the cell we're waiting for became non-nil. */ |
6947 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6948 | break; | |
0a65b032 | 6949 | |
bae8d137 RS |
6950 | /* Compute time from now till when time limit is up */ |
6951 | /* Exit if already run out */ | |
52fd88d3 EZ |
6952 | if (time_limit == -1) |
6953 | { | |
6954 | /* -1 specified for timeout means | |
6955 | gobble output available now | |
6956 | but don't wait at all. */ | |
6957 | ||
6958 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
6959 | } | |
6960 | else if (time_limit || microsecs) | |
6720a7fb | 6961 | { |
f694e5d2 KH |
6962 | EMACS_GET_TIME (timeout); |
6963 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
6964 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
6965 | break; |
6966 | } | |
52fd88d3 EZ |
6967 | else |
6968 | { | |
6969 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
6970 | } | |
6720a7fb | 6971 | |
bae8d137 RS |
6972 | /* If our caller will not immediately handle keyboard events, |
6973 | run timer events directly. | |
6974 | (Callers that will immediately read keyboard events | |
6975 | call timer_delay on their own.) */ | |
f3fbd155 | 6976 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6977 | { |
6978 | EMACS_TIME timer_delay; | |
0a65b032 | 6979 | |
9baacf76 | 6980 | do |
0a65b032 | 6981 | { |
9baacf76 GM |
6982 | int old_timers_run = timers_run; |
6983 | timer_delay = timer_check (1); | |
6984 | if (timers_run != old_timers_run && do_display) | |
6985 | /* We must retry, since a timer may have requeued itself | |
6986 | and that could alter the time delay. */ | |
3007ebfb | 6987 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6988 | else |
6989 | break; | |
0a65b032 | 6990 | } |
9baacf76 | 6991 | while (!detect_input_pending ()); |
0a65b032 | 6992 | |
52fd88d3 | 6993 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6994 | if (read_kbd != 0 |
52fd88d3 EZ |
6995 | && requeued_events_pending_p ()) |
6996 | break; | |
6997 | ||
f694e5d2 | 6998 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
6999 | { |
7000 | EMACS_TIME difference; | |
f694e5d2 | 7001 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
7002 | if (EMACS_TIME_NEG_P (difference)) |
7003 | { | |
f694e5d2 | 7004 | timeout = timer_delay; |
bae8d137 RS |
7005 | timeout_reduced_for_timers = 1; |
7006 | } | |
7007 | } | |
7008 | } | |
7009 | ||
6720a7fb JB |
7010 | /* Cause C-g and alarm signals to take immediate action, |
7011 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7012 | if (read_kbd < 0) |
6720a7fb JB |
7013 | set_waiting_for_input (&timeout); |
7014 | ||
0a65b032 RS |
7015 | /* Wait till there is something to do. */ |
7016 | ||
b89a415a | 7017 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
7018 | FD_ZERO (&waitchannels); |
7019 | else | |
7020 | FD_SET (0, &waitchannels); | |
7021 | ||
ff11dfa1 | 7022 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7023 | reprocess its display stuff. */ |
5164ee8e | 7024 | if (frame_garbaged && do_display) |
0a65b032 RS |
7025 | { |
7026 | clear_waiting_for_input (); | |
3007ebfb | 7027 | redisplay_preserve_echo_area (15); |
b89a415a | 7028 | if (read_kbd < 0) |
0a65b032 RS |
7029 | set_waiting_for_input (&timeout); |
7030 | } | |
6720a7fb | 7031 | |
b89a415a | 7032 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
7033 | { |
7034 | nfds = 0; | |
7035 | FD_ZERO (&waitchannels); | |
7036 | } | |
7037 | else | |
7038 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7039 | &timeout); | |
f694e5d2 KH |
7040 | |
7041 | xerrno = errno; | |
6720a7fb JB |
7042 | |
7043 | /* Make C-g and alarm signals set flags again */ | |
7044 | clear_waiting_for_input (); | |
7045 | ||
7046 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7047 | do_pending_window_change (0); |
6720a7fb | 7048 | |
f694e5d2 KH |
7049 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7050 | /* We waited the full specified time, so return now. */ | |
7051 | break; | |
7052 | ||
6720a7fb JB |
7053 | if (nfds == -1) |
7054 | { | |
7055 | /* If the system call was interrupted, then go around the | |
7056 | loop again. */ | |
f694e5d2 | 7057 | if (xerrno == EINTR) |
8db121c4 | 7058 | FD_ZERO (&waitchannels); |
f694e5d2 | 7059 | else |
68c45bf0 | 7060 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 7061 | } |
6720a7fb | 7062 | |
f694e5d2 KH |
7063 | /* Check for keyboard input */ |
7064 | ||
b89a415a | 7065 | if (read_kbd |
78c1afb6 | 7066 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7067 | { |
78c1afb6 | 7068 | swallow_events (do_display); |
f694e5d2 | 7069 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7070 | break; |
78c1afb6 EZ |
7071 | } |
7072 | ||
52fd88d3 | 7073 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7074 | if (read_kbd |
52fd88d3 EZ |
7075 | && requeued_events_pending_p ()) |
7076 | break; | |
7077 | ||
f854a00b RS |
7078 | /* If wait_for_cell. check for keyboard input |
7079 | but don't run any timers. | |
7080 | ??? (It seems wrong to me to check for keyboard | |
7081 | input at all when wait_for_cell, but the code | |
7082 | has been this way since July 1994. | |
7083 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7084 | if (! NILP (wait_for_cell) |
f854a00b RS |
7085 | && detect_input_pending ()) |
7086 | { | |
7087 | swallow_events (do_display); | |
7088 | if (detect_input_pending ()) | |
7089 | break; | |
7090 | } | |
7091 | ||
0a65b032 | 7092 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7093 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7094 | break; |
6720a7fb JB |
7095 | } |
7096 | ||
a87b802f JB |
7097 | start_polling (); |
7098 | ||
6720a7fb JB |
7099 | return 0; |
7100 | } | |
7101 | ||
f388c88a EZ |
7102 | #endif /* not subprocesses */ |
7103 | ||
7104 | /* The following functions are needed even if async subprocesses are | |
7105 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 7106 | |
01faa934 DN |
7107 | /* Add DESC to the set of keyboard input descriptors. */ |
7108 | ||
7109 | void | |
7110 | add_keyboard_wait_descriptor (int desc) | |
7111 | { | |
20477505 | 7112 | #ifdef subprocesses |
01faa934 DN |
7113 | FD_SET (desc, &input_wait_mask); |
7114 | FD_SET (desc, &non_process_wait_mask); | |
7115 | if (desc > max_keyboard_desc) | |
7116 | max_keyboard_desc = desc; | |
20477505 | 7117 | #endif |
01faa934 DN |
7118 | } |
7119 | ||
7120 | /* From now on, do not expect DESC to give keyboard input. */ | |
7121 | ||
7122 | void | |
7123 | delete_keyboard_wait_descriptor (int desc) | |
7124 | { | |
7125 | #ifdef subprocesses | |
7126 | int fd; | |
7127 | int lim = max_keyboard_desc; | |
7128 | ||
7129 | FD_CLR (desc, &input_wait_mask); | |
7130 | FD_CLR (desc, &non_process_wait_mask); | |
7131 | ||
7132 | if (desc == max_keyboard_desc) | |
7133 | for (fd = 0; fd < lim; fd++) | |
7134 | if (FD_ISSET (fd, &input_wait_mask) | |
7135 | && !FD_ISSET (fd, &non_keyboard_wait_mask) | |
7136 | && !FD_ISSET (fd, &gpm_wait_mask)) | |
7137 | max_keyboard_desc = fd; | |
7138 | #endif /* subprocesses */ | |
7139 | } | |
7140 | ||
fc549af9 EZ |
7141 | /* Setup coding systems of PROCESS. */ |
7142 | ||
7143 | void | |
7144 | setup_process_coding_systems (Lisp_Object process) | |
7145 | { | |
7146 | #ifdef subprocesses | |
7147 | struct Lisp_Process *p = XPROCESS (process); | |
7148 | int inch = p->infd; | |
7149 | int outch = p->outfd; | |
7150 | Lisp_Object coding_system; | |
7151 | ||
7152 | if (inch < 0 || outch < 0) | |
7153 | return; | |
7154 | ||
7155 | if (!proc_decode_coding_system[inch]) | |
7156 | proc_decode_coding_system[inch] | |
7157 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
7158 | coding_system = p->decode_coding_system; | |
7159 | if (! NILP (p->filter)) | |
7160 | ; | |
7161 | else if (BUFFERP (p->buffer)) | |
7162 | { | |
7163 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
7164 | coding_system = raw_text_coding_system (coding_system); | |
7165 | } | |
7166 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7167 | ||
7168 | if (!proc_encode_coding_system[outch]) | |
7169 | proc_encode_coding_system[outch] | |
7170 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
7171 | setup_coding_system (p->encode_coding_system, | |
7172 | proc_encode_coding_system[outch]); | |
7173 | #endif | |
7174 | } | |
7175 | ||
7176 | /* Close all descriptors currently in use for communication | |
7177 | with subprocess. This is used in a newly-forked subprocess | |
7178 | to get rid of irrelevant descriptors. */ | |
7179 | ||
7180 | void | |
7181 | close_process_descs (void) | |
7182 | { | |
7183 | #ifndef DOS_NT | |
7184 | int i; | |
7185 | for (i = 0; i < MAXDESC; i++) | |
7186 | { | |
7187 | Lisp_Object process; | |
7188 | process = chan_process[i]; | |
7189 | if (!NILP (process)) | |
7190 | { | |
7191 | int in = XPROCESS (process)->infd; | |
7192 | int out = XPROCESS (process)->outfd; | |
7193 | if (in >= 0) | |
7194 | emacs_close (in); | |
7195 | if (out >= 0 && in != out) | |
7196 | emacs_close (out); | |
7197 | } | |
7198 | } | |
7199 | #endif | |
7200 | } | |
7201 | ||
6720a7fb | 7202 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7203 | doc: /* Return the (or a) process associated with BUFFER. |
7204 | BUFFER may be a buffer or the name of one. */) | |
7205 | (register Lisp_Object buffer) | |
6720a7fb | 7206 | { |
f388c88a EZ |
7207 | #ifdef subprocesses |
7208 | register Lisp_Object buf, tail, proc; | |
7209 | ||
7210 | if (NILP (buffer)) return Qnil; | |
7211 | buf = Fget_buffer (buffer); | |
7212 | if (NILP (buf)) return Qnil; | |
7213 | ||
7214 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7215 | { | |
7216 | proc = Fcdr (XCAR (tail)); | |
7217 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) | |
7218 | return proc; | |
7219 | } | |
7220 | #endif /* subprocesses */ | |
6720a7fb JB |
7221 | return Qnil; |
7222 | } | |
7223 | ||
52a1b894 | 7224 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7225 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7226 | 1, 1, 0, | |
f388c88a EZ |
7227 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7228 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7229 | associated with PROCESS will inherit the coding system used to decode | |
7230 | the process output. */) | |
5842a27b | 7231 | (register Lisp_Object process) |
52a1b894 | 7232 | { |
f388c88a EZ |
7233 | #ifdef subprocesses |
7234 | CHECK_PROCESS (process); | |
7235 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7236 | #else | |
52a1b894 EZ |
7237 | /* Ignore the argument and return the value of |
7238 | inherit-process-coding-system. */ | |
7239 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7240 | #endif |
52a1b894 EZ |
7241 | } |
7242 | ||
6720a7fb | 7243 | /* Kill all processes associated with `buffer'. |
f388c88a | 7244 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7245 | |
d9bb0c32 | 7246 | void |
f388c88a | 7247 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7248 | { |
f388c88a EZ |
7249 | #ifdef subprocesses |
7250 | Lisp_Object tail, proc; | |
7251 | ||
7252 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7253 | { | |
7254 | proc = XCDR (XCAR (tail)); | |
7255 | if (PROCESSP (proc) | |
7256 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) | |
7257 | { | |
7258 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7259 | Fdelete_process (proc); | |
7260 | else if (XPROCESS (proc)->infd >= 0) | |
7261 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7262 | } | |
7263 | } | |
7264 | #else /* subprocesses */ | |
7265 | /* Since we have no subprocesses, this does nothing. */ | |
7266 | #endif /* subprocesses */ | |
6720a7fb JB |
7267 | } |
7268 | ||
77defa9a EZ |
7269 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, |
7270 | 0, 0, 0, | |
7271 | doc: /* Returns non-nil if Emacs is waiting for input from the user. | |
7272 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7273 | (void) | |
7274 | { | |
7275 | #ifdef subprocesses | |
7276 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7277 | #else | |
7278 | return Qnil; | |
7279 | #endif | |
7280 | } | |
7281 | ||
d568829b EZ |
7282 | /* Stop reading input from keyboard sources. */ |
7283 | ||
7284 | void | |
7285 | hold_keyboard_input (void) | |
7286 | { | |
7287 | kbd_is_on_hold = 1; | |
7288 | } | |
7289 | ||
7290 | /* Resume reading input from keyboard sources. */ | |
7291 | ||
7292 | void | |
7293 | unhold_keyboard_input (void) | |
7294 | { | |
7295 | kbd_is_on_hold = 0; | |
7296 | } | |
7297 | ||
7298 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7299 | ||
7300 | int | |
7301 | kbd_on_hold_p (void) | |
7302 | { | |
7303 | return kbd_is_on_hold; | |
7304 | } | |
7305 | ||
f388c88a EZ |
7306 | \f |
7307 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7308 | ||
934e2a68 EZ |
7309 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7310 | 0, 0, 0, | |
7311 | doc: /* Return a list of numerical process IDs of all running processes. | |
7312 | If this functionality is unsupported, return nil. | |
7313 | ||
f388c88a EZ |
7314 | See `process-attributes' for getting attributes of a process given its ID. */) |
7315 | (void) | |
7316 | { | |
7317 | return list_system_processes (); | |
7318 | } | |
7319 | ||
7320 | DEFUN ("process-attributes", Fprocess_attributes, | |
7321 | Sprocess_attributes, 1, 1, 0, | |
7322 | doc: /* Return attributes of the process given by its PID, a number. | |
7323 | ||
7324 | Value is an alist where each element is a cons cell of the form | |
7325 | ||
7326 | \(KEY . VALUE) | |
7327 | ||
7328 | If this functionality is unsupported, the value is nil. | |
7329 | ||
7330 | See `list-system-processes' for getting a list of all process IDs. | |
7331 | ||
7332 | The KEYs of the attributes that this function may return are listed | |
7333 | below, together with the type of the associated VALUE (in parentheses). | |
7334 | Not all platforms support all of these attributes; unsupported | |
7335 | attributes will not appear in the returned alist. | |
7336 | Unless explicitly indicated otherwise, numbers can have either | |
7337 | integer or floating point values. | |
7338 | ||
7339 | euid -- Effective user User ID of the process (number) | |
7340 | user -- User name corresponding to euid (string) | |
7341 | egid -- Effective user Group ID of the process (number) | |
7342 | group -- Group name corresponding to egid (string) | |
7343 | comm -- Command name (executable name only) (string) | |
7344 | state -- Process state code, such as "S", "R", or "T" (string) | |
7345 | ppid -- Parent process ID (number) | |
7346 | pgrp -- Process group ID (number) | |
7347 | sess -- Session ID, i.e. process ID of session leader (number) | |
7348 | ttname -- Controlling tty name (string) | |
7349 | tpgid -- ID of foreground process group on the process's tty (number) | |
7350 | minflt -- number of minor page faults (number) | |
7351 | majflt -- number of major page faults (number) | |
7352 | cminflt -- cumulative number of minor page faults (number) | |
7353 | cmajflt -- cumulative number of major page faults (number) | |
7354 | utime -- user time used by the process, in the (HIGH LOW USEC) format | |
7355 | stime -- system time used by the process, in the (HIGH LOW USEC) format | |
7356 | time -- sum of utime and stime, in the (HIGH LOW USEC) format | |
7357 | cutime -- user time used by the process and its children, (HIGH LOW USEC) | |
7358 | cstime -- system time used by the process and its children, (HIGH LOW USEC) | |
7359 | ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format | |
7360 | pri -- priority of the process (number) | |
7361 | nice -- nice value of the process (number) | |
7362 | thcount -- process thread count (number) | |
7363 | start -- time the process started, in the (HIGH LOW USEC) format | |
7364 | vsize -- virtual memory size of the process in KB's (number) | |
7365 | rss -- resident set size of the process in KB's (number) | |
7366 | etime -- elapsed time the process is running, in (HIGH LOW USEC) format | |
7367 | pcpu -- percents of CPU time used by the process (floating-point number) | |
7368 | pmem -- percents of total physical memory used by process's resident set | |
7369 | (floating-point number) | |
7370 | args -- command line which invoked the process (string). */) | |
7371 | ( Lisp_Object pid) | |
7372 | { | |
7373 | return system_process_attributes (pid); | |
7374 | } | |
7375 | ||
7376 | \f | |
7377 | void | |
7378 | init_process (void) | |
7379 | { | |
7380 | #ifdef subprocesses | |
7381 | register int i; | |
7382 | ||
7383 | inhibit_sentinels = 0; | |
7384 | ||
7385 | #ifdef SIGCHLD | |
7386 | #ifndef CANNOT_DUMP | |
7387 | if (! noninteractive || initialized) | |
7388 | #endif | |
7389 | signal (SIGCHLD, sigchld_handler); | |
7390 | #endif | |
7391 | ||
7392 | FD_ZERO (&input_wait_mask); | |
7393 | FD_ZERO (&non_keyboard_wait_mask); | |
7394 | FD_ZERO (&non_process_wait_mask); | |
7395 | max_process_desc = 0; | |
7396 | ||
7397 | #ifdef NON_BLOCKING_CONNECT | |
7398 | FD_ZERO (&connect_wait_mask); | |
7399 | num_pending_connects = 0; | |
7400 | #endif | |
7401 | ||
7402 | #ifdef ADAPTIVE_READ_BUFFERING | |
7403 | process_output_delay_count = 0; | |
7404 | process_output_skip = 0; | |
7405 | #endif | |
7406 | ||
7407 | /* Don't do this, it caused infinite select loops. The display | |
7408 | method should call add_keyboard_wait_descriptor on stdin if it | |
7409 | needs that. */ | |
7410 | #if 0 | |
7411 | FD_SET (0, &input_wait_mask); | |
7412 | #endif | |
7413 | ||
7414 | Vprocess_alist = Qnil; | |
7415 | #ifdef SIGCHLD | |
7416 | deleted_pid_list = Qnil; | |
7417 | #endif | |
7418 | for (i = 0; i < MAXDESC; i++) | |
7419 | { | |
7420 | chan_process[i] = Qnil; | |
7421 | proc_buffered_char[i] = -1; | |
7422 | } | |
7423 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7424 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7425 | #ifdef DATAGRAM_SOCKETS | |
7426 | memset (datagram_address, 0, sizeof datagram_address); | |
7427 | #endif | |
7428 | ||
7429 | #ifdef HAVE_SOCKETS | |
7430 | { | |
7431 | Lisp_Object subfeatures = Qnil; | |
7432 | const struct socket_options *sopt; | |
7433 | ||
7434 | #define ADD_SUBFEATURE(key, val) \ | |
7435 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7436 | ||
7437 | #ifdef NON_BLOCKING_CONNECT | |
7438 | ADD_SUBFEATURE (QCnowait, Qt); | |
7439 | #endif | |
7440 | #ifdef DATAGRAM_SOCKETS | |
7441 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7442 | #endif | |
7443 | #ifdef HAVE_SEQPACKET | |
7444 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7445 | #endif | |
7446 | #ifdef HAVE_LOCAL_SOCKETS | |
7447 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7448 | #endif | |
7449 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7450 | #ifdef AF_INET6 | |
7451 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7452 | #endif | |
7453 | #ifdef HAVE_GETSOCKNAME | |
7454 | ADD_SUBFEATURE (QCservice, Qt); | |
7455 | #endif | |
7456 | #if defined(O_NONBLOCK) || defined(O_NDELAY) | |
7457 | ADD_SUBFEATURE (QCserver, Qt); | |
7458 | #endif | |
7459 | ||
7460 | for (sopt = socket_options; sopt->name; sopt++) | |
7461 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7462 | ||
7463 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7464 | } | |
7465 | #endif /* HAVE_SOCKETS */ | |
7466 | ||
7467 | #if defined (DARWIN_OS) | |
7468 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7469 | processes. As such, we only change the default value. */ | |
7470 | if (initialized) | |
7471 | { | |
7472 | char *release = get_operating_system_release (); | |
7473 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION | |
7474 | && release[1] == '.')) { | |
7475 | Vprocess_connection_type = Qnil; | |
7476 | } | |
7477 | } | |
7478 | #endif | |
7479 | #endif /* subprocesses */ | |
7480 | kbd_is_on_hold = 0; | |
7481 | } | |
7482 | ||
7483 | void | |
7484 | syms_of_process (void) | |
7485 | { | |
7486 | #ifdef subprocesses | |
7487 | ||
7488 | Qprocessp = intern_c_string ("processp"); | |
7489 | staticpro (&Qprocessp); | |
7490 | Qrun = intern_c_string ("run"); | |
7491 | staticpro (&Qrun); | |
7492 | Qstop = intern_c_string ("stop"); | |
7493 | staticpro (&Qstop); | |
7494 | Qsignal = intern_c_string ("signal"); | |
7495 | staticpro (&Qsignal); | |
7496 | ||
7497 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7498 | here again. | |
934e2a68 | 7499 | |
f388c88a EZ |
7500 | Qexit = intern_c_string ("exit"); |
7501 | staticpro (&Qexit); */ | |
934e2a68 | 7502 | |
f388c88a EZ |
7503 | Qopen = intern_c_string ("open"); |
7504 | staticpro (&Qopen); | |
7505 | Qclosed = intern_c_string ("closed"); | |
7506 | staticpro (&Qclosed); | |
7507 | Qconnect = intern_c_string ("connect"); | |
7508 | staticpro (&Qconnect); | |
7509 | Qfailed = intern_c_string ("failed"); | |
7510 | staticpro (&Qfailed); | |
7511 | Qlisten = intern_c_string ("listen"); | |
7512 | staticpro (&Qlisten); | |
7513 | Qlocal = intern_c_string ("local"); | |
7514 | staticpro (&Qlocal); | |
7515 | Qipv4 = intern_c_string ("ipv4"); | |
7516 | staticpro (&Qipv4); | |
7517 | #ifdef AF_INET6 | |
7518 | Qipv6 = intern_c_string ("ipv6"); | |
7519 | staticpro (&Qipv6); | |
7520 | #endif | |
7521 | Qdatagram = intern_c_string ("datagram"); | |
7522 | staticpro (&Qdatagram); | |
7523 | Qseqpacket = intern_c_string ("seqpacket"); | |
7524 | staticpro (&Qseqpacket); | |
934e2a68 | 7525 | |
f388c88a EZ |
7526 | QCport = intern_c_string (":port"); |
7527 | staticpro (&QCport); | |
7528 | QCspeed = intern_c_string (":speed"); | |
7529 | staticpro (&QCspeed); | |
7530 | QCprocess = intern_c_string (":process"); | |
7531 | staticpro (&QCprocess); | |
934e2a68 | 7532 | |
f388c88a EZ |
7533 | QCbytesize = intern_c_string (":bytesize"); |
7534 | staticpro (&QCbytesize); | |
7535 | QCstopbits = intern_c_string (":stopbits"); | |
7536 | staticpro (&QCstopbits); | |
7537 | QCparity = intern_c_string (":parity"); | |
7538 | staticpro (&QCparity); | |
7539 | Qodd = intern_c_string ("odd"); | |
7540 | staticpro (&Qodd); | |
7541 | Qeven = intern_c_string ("even"); | |
7542 | staticpro (&Qeven); | |
7543 | QCflowcontrol = intern_c_string (":flowcontrol"); | |
7544 | staticpro (&QCflowcontrol); | |
7545 | Qhw = intern_c_string ("hw"); | |
7546 | staticpro (&Qhw); | |
7547 | Qsw = intern_c_string ("sw"); | |
7548 | staticpro (&Qsw); | |
7549 | QCsummary = intern_c_string (":summary"); | |
7550 | staticpro (&QCsummary); | |
934e2a68 | 7551 | |
f388c88a EZ |
7552 | Qreal = intern_c_string ("real"); |
7553 | staticpro (&Qreal); | |
7554 | Qnetwork = intern_c_string ("network"); | |
7555 | staticpro (&Qnetwork); | |
7556 | Qserial = intern_c_string ("serial"); | |
7557 | staticpro (&Qserial); | |
7558 | QCbuffer = intern_c_string (":buffer"); | |
7559 | staticpro (&QCbuffer); | |
7560 | QChost = intern_c_string (":host"); | |
7561 | staticpro (&QChost); | |
7562 | QCservice = intern_c_string (":service"); | |
7563 | staticpro (&QCservice); | |
7564 | QClocal = intern_c_string (":local"); | |
7565 | staticpro (&QClocal); | |
7566 | QCremote = intern_c_string (":remote"); | |
7567 | staticpro (&QCremote); | |
7568 | QCcoding = intern_c_string (":coding"); | |
7569 | staticpro (&QCcoding); | |
7570 | QCserver = intern_c_string (":server"); | |
7571 | staticpro (&QCserver); | |
7572 | QCnowait = intern_c_string (":nowait"); | |
7573 | staticpro (&QCnowait); | |
7574 | QCsentinel = intern_c_string (":sentinel"); | |
7575 | staticpro (&QCsentinel); | |
7576 | QClog = intern_c_string (":log"); | |
7577 | staticpro (&QClog); | |
7578 | QCnoquery = intern_c_string (":noquery"); | |
7579 | staticpro (&QCnoquery); | |
7580 | QCstop = intern_c_string (":stop"); | |
7581 | staticpro (&QCstop); | |
7582 | QCoptions = intern_c_string (":options"); | |
7583 | staticpro (&QCoptions); | |
7584 | QCplist = intern_c_string (":plist"); | |
7585 | staticpro (&QCplist); | |
934e2a68 | 7586 | |
f388c88a EZ |
7587 | Qlast_nonmenu_event = intern_c_string ("last-nonmenu-event"); |
7588 | staticpro (&Qlast_nonmenu_event); | |
934e2a68 | 7589 | |
f388c88a EZ |
7590 | staticpro (&Vprocess_alist); |
7591 | #ifdef SIGCHLD | |
7592 | staticpro (&deleted_pid_list); | |
7593 | #endif | |
934e2a68 | 7594 | |
f388c88a | 7595 | #endif /* subprocesses */ |
6720a7fb | 7596 | |
d67b4f80 | 7597 | QCname = intern_c_string (":name"); |
8c57b2e5 | 7598 | staticpro (&QCname); |
d67b4f80 | 7599 | QCtype = intern_c_string (":type"); |
6a1bab0e | 7600 | staticpro (&QCtype); |
f388c88a | 7601 | |
d67b4f80 | 7602 | Qeuid = intern_c_string ("euid"); |
6a1bab0e | 7603 | staticpro (&Qeuid); |
d67b4f80 | 7604 | Qegid = intern_c_string ("egid"); |
6a1bab0e | 7605 | staticpro (&Qegid); |
d67b4f80 | 7606 | Quser = intern_c_string ("user"); |
6a1bab0e | 7607 | staticpro (&Quser); |
d67b4f80 | 7608 | Qgroup = intern_c_string ("group"); |
6a1bab0e | 7609 | staticpro (&Qgroup); |
d67b4f80 | 7610 | Qcomm = intern_c_string ("comm"); |
6a1bab0e | 7611 | staticpro (&Qcomm); |
d67b4f80 | 7612 | Qstate = intern_c_string ("state"); |
6a1bab0e | 7613 | staticpro (&Qstate); |
d67b4f80 | 7614 | Qppid = intern_c_string ("ppid"); |
6a1bab0e | 7615 | staticpro (&Qppid); |
d67b4f80 | 7616 | Qpgrp = intern_c_string ("pgrp"); |
6a1bab0e | 7617 | staticpro (&Qpgrp); |
d67b4f80 | 7618 | Qsess = intern_c_string ("sess"); |
6a1bab0e | 7619 | staticpro (&Qsess); |
d67b4f80 | 7620 | Qttname = intern_c_string ("ttname"); |
6a1bab0e | 7621 | staticpro (&Qttname); |
d67b4f80 | 7622 | Qtpgid = intern_c_string ("tpgid"); |
6a1bab0e | 7623 | staticpro (&Qtpgid); |
d67b4f80 | 7624 | Qminflt = intern_c_string ("minflt"); |
6a1bab0e | 7625 | staticpro (&Qminflt); |
d67b4f80 | 7626 | Qmajflt = intern_c_string ("majflt"); |
6a1bab0e | 7627 | staticpro (&Qmajflt); |
d67b4f80 | 7628 | Qcminflt = intern_c_string ("cminflt"); |
6a1bab0e | 7629 | staticpro (&Qcminflt); |
d67b4f80 | 7630 | Qcmajflt = intern_c_string ("cmajflt"); |
6a1bab0e | 7631 | staticpro (&Qcmajflt); |
d67b4f80 | 7632 | Qutime = intern_c_string ("utime"); |
6a1bab0e | 7633 | staticpro (&Qutime); |
d67b4f80 | 7634 | Qstime = intern_c_string ("stime"); |
6a1bab0e | 7635 | staticpro (&Qstime); |
d67b4f80 | 7636 | Qtime = intern_c_string ("time"); |
6a1bab0e | 7637 | staticpro (&Qtime); |
d67b4f80 | 7638 | Qcutime = intern_c_string ("cutime"); |
6a1bab0e | 7639 | staticpro (&Qcutime); |
d67b4f80 | 7640 | Qcstime = intern_c_string ("cstime"); |
6a1bab0e | 7641 | staticpro (&Qcstime); |
d67b4f80 | 7642 | Qctime = intern_c_string ("ctime"); |
6a1bab0e | 7643 | staticpro (&Qctime); |
d67b4f80 | 7644 | Qpri = intern_c_string ("pri"); |
6a1bab0e | 7645 | staticpro (&Qpri); |
d67b4f80 | 7646 | Qnice = intern_c_string ("nice"); |
6a1bab0e | 7647 | staticpro (&Qnice); |
d67b4f80 | 7648 | Qthcount = intern_c_string ("thcount"); |
6a1bab0e | 7649 | staticpro (&Qthcount); |
d67b4f80 | 7650 | Qstart = intern_c_string ("start"); |
6a1bab0e | 7651 | staticpro (&Qstart); |
d67b4f80 | 7652 | Qvsize = intern_c_string ("vsize"); |
6a1bab0e | 7653 | staticpro (&Qvsize); |
d67b4f80 | 7654 | Qrss = intern_c_string ("rss"); |
6a1bab0e | 7655 | staticpro (&Qrss); |
d67b4f80 | 7656 | Qetime = intern_c_string ("etime"); |
6a1bab0e | 7657 | staticpro (&Qetime); |
d67b4f80 | 7658 | Qpcpu = intern_c_string ("pcpu"); |
6a1bab0e | 7659 | staticpro (&Qpcpu); |
d67b4f80 | 7660 | Qpmem = intern_c_string ("pmem"); |
6a1bab0e | 7661 | staticpro (&Qpmem); |
d67b4f80 | 7662 | Qargs = intern_c_string ("args"); |
6a1bab0e | 7663 | staticpro (&Qargs); |
9057ff80 | 7664 | |
f388c88a EZ |
7665 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, |
7666 | doc: /* *Non-nil means delete processes immediately when they exit. | |
7667 | A value of nil means don't delete them until `list-processes' is run. */); | |
7668 | ||
7669 | delete_exited_processes = 1; | |
7670 | ||
462aa963 | 7671 | #ifdef subprocesses |
f388c88a EZ |
7672 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, |
7673 | doc: /* Control type of device used to communicate with subprocesses. | |
7674 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7675 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7676 | then a pipe is used in any case. | |
7677 | The value takes effect when `start-process' is called. */); | |
7678 | Vprocess_connection_type = Qt; | |
7679 | ||
7680 | #ifdef ADAPTIVE_READ_BUFFERING | |
7681 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
7682 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
7683 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7684 | is read in very small blocks, potentially resulting in very poor performance. | |
7685 | This behavior can be remedied to some extent by setting this variable to a | |
7686 | non-nil value, as it will automatically delay reading from such processes, to | |
7687 | allow them to produce more output before Emacs tries to read it. | |
7688 | If the value is t, the delay is reset after each write to the process; any other | |
7689 | non-nil value means that the delay is not reset on write. | |
7690 | The variable takes effect when `start-process' is called. */); | |
7691 | Vprocess_adaptive_read_buffering = Qt; | |
7692 | #endif | |
7693 | ||
7694 | defsubr (&Sprocessp); | |
7695 | defsubr (&Sget_process); | |
7696 | defsubr (&Sdelete_process); | |
7697 | defsubr (&Sprocess_status); | |
7698 | defsubr (&Sprocess_exit_status); | |
7699 | defsubr (&Sprocess_id); | |
7700 | defsubr (&Sprocess_name); | |
7701 | defsubr (&Sprocess_tty_name); | |
7702 | defsubr (&Sprocess_command); | |
7703 | defsubr (&Sset_process_buffer); | |
7704 | defsubr (&Sprocess_buffer); | |
7705 | defsubr (&Sprocess_mark); | |
7706 | defsubr (&Sset_process_filter); | |
7707 | defsubr (&Sprocess_filter); | |
7708 | defsubr (&Sset_process_sentinel); | |
7709 | defsubr (&Sprocess_sentinel); | |
7710 | defsubr (&Sset_process_window_size); | |
7711 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7712 | defsubr (&Sset_process_query_on_exit_flag); | |
7713 | defsubr (&Sprocess_query_on_exit_flag); | |
7714 | defsubr (&Sprocess_contact); | |
7715 | defsubr (&Sprocess_plist); | |
7716 | defsubr (&Sset_process_plist); | |
7717 | defsubr (&Slist_processes); | |
7718 | defsubr (&Sprocess_list); | |
7719 | defsubr (&Sstart_process); | |
7720 | #ifdef HAVE_SERIAL | |
7721 | defsubr (&Sserial_process_configure); | |
7722 | defsubr (&Smake_serial_process); | |
7723 | #endif /* HAVE_SERIAL */ | |
7724 | #ifdef HAVE_SOCKETS | |
7725 | defsubr (&Sset_network_process_option); | |
7726 | defsubr (&Smake_network_process); | |
7727 | defsubr (&Sformat_network_address); | |
7728 | #endif /* HAVE_SOCKETS */ | |
7729 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
7730 | #ifdef SIOCGIFCONF | |
7731 | defsubr (&Snetwork_interface_list); | |
7732 | #endif | |
7733 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
7734 | defsubr (&Snetwork_interface_info); | |
7735 | #endif | |
7736 | #endif /* HAVE_SOCKETS ... */ | |
7737 | #ifdef DATAGRAM_SOCKETS | |
7738 | defsubr (&Sprocess_datagram_address); | |
7739 | defsubr (&Sset_process_datagram_address); | |
7740 | #endif | |
7741 | defsubr (&Saccept_process_output); | |
7742 | defsubr (&Sprocess_send_region); | |
7743 | defsubr (&Sprocess_send_string); | |
7744 | defsubr (&Sinterrupt_process); | |
7745 | defsubr (&Skill_process); | |
7746 | defsubr (&Squit_process); | |
7747 | defsubr (&Sstop_process); | |
7748 | defsubr (&Scontinue_process); | |
7749 | defsubr (&Sprocess_running_child_p); | |
7750 | defsubr (&Sprocess_send_eof); | |
7751 | defsubr (&Ssignal_process); | |
7752 | defsubr (&Swaiting_for_user_input_p); | |
7753 | defsubr (&Sprocess_type); | |
7754 | defsubr (&Sset_process_coding_system); | |
7755 | defsubr (&Sprocess_coding_system); | |
7756 | defsubr (&Sset_process_filter_multibyte); | |
7757 | defsubr (&Sprocess_filter_multibyte_p); | |
7758 | ||
7759 | #endif /* subprocesses */ | |
7760 | ||
6720a7fb | 7761 | defsubr (&Sget_buffer_process); |
52a1b894 | 7762 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7763 | defsubr (&Slist_system_processes); |
a20878b6 | 7764 | defsubr (&Sprocess_attributes); |
6720a7fb JB |
7765 | } |
7766 | ||
6b61353c KH |
7767 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 |
7768 | (do not change this comment) */ |