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 | 34 | #include <stdlib.h> |
934e2a68 | 35 | |
93b4f699 RS |
36 | #ifdef HAVE_UNISTD_H |
37 | #include <unistd.h> | |
38 | #endif | |
e98d950b | 39 | #include <fcntl.h> |
e98d950b | 40 | |
f388c88a EZ |
41 | /* Only MS-DOS does not define `subprocesses'. */ |
42 | #ifdef subprocesses | |
43 | ||
d0d6b7c5 JB |
44 | #include <sys/socket.h> |
45 | #include <netdb.h> | |
46 | #include <netinet/in.h> | |
47 | #include <arpa/inet.h> | |
e690ca94 KS |
48 | |
49 | /* Are local (unix) sockets supported? */ | |
4624371d | 50 | #if defined (HAVE_SYS_UN_H) |
e690ca94 KS |
51 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
52 | #define AF_LOCAL AF_UNIX | |
53 | #endif | |
54 | #ifdef AF_LOCAL | |
55 | #define HAVE_LOCAL_SOCKETS | |
56 | #include <sys/un.h> | |
57 | #endif | |
58 | #endif | |
d0d6b7c5 | 59 | |
1d29df59 | 60 | #if defined(HAVE_SYS_IOCTL_H) |
d0d6b7c5 | 61 | #include <sys/ioctl.h> |
32bc6709 DN |
62 | #if defined(HAVE_NET_IF_H) |
63 | #include <net/if.h> | |
64 | #endif /* HAVE_NET_IF_H */ | |
1d29df59 | 65 | #endif /* HAVE_SYS_IOCTL_H */ |
d0d6b7c5 JB |
66 | |
67 | #ifdef NEED_BSDTTY | |
68 | #include <bsdtty.h> | |
69 | #endif | |
70 | ||
e62cab61 DL |
71 | #ifdef HAVE_SYS_WAIT |
72 | #include <sys/wait.h> | |
73 | #endif | |
d0d6b7c5 | 74 | |
08116b48 CY |
75 | #ifdef HAVE_RES_INIT |
76 | #include <netinet/in.h> | |
77 | #include <arpa/nameser.h> | |
78 | #include <resolv.h> | |
79 | #endif | |
80 | ||
3d608a86 J |
81 | #ifdef HAVE_UTIL_H |
82 | #include <util.h> | |
83 | #endif | |
84 | ||
f388c88a EZ |
85 | #endif /* subprocesses */ |
86 | ||
fa8459a3 | 87 | #include "lisp.h" |
d0d6b7c5 | 88 | #include "systime.h" |
36ebaafa | 89 | #include "systty.h" |
d0d6b7c5 | 90 | |
d0d6b7c5 JB |
91 | #include "window.h" |
92 | #include "buffer.h" | |
5bbf78c1 | 93 | #include "character.h" |
0fa1789e | 94 | #include "coding.h" |
d0d6b7c5 | 95 | #include "process.h" |
428a555e | 96 | #include "frame.h" |
d0d6b7c5 JB |
97 | #include "termhooks.h" |
98 | #include "termopts.h" | |
99 | #include "commands.h" | |
3ec68006 | 100 | #include "keyboard.h" |
ececcbec | 101 | #include "blockinput.h" |
dfcf069d | 102 | #include "dispextern.h" |
e0016554 | 103 | #include "composite.h" |
30904ab7 | 104 | #include "atimer.h" |
f388c88a EZ |
105 | #include "sysselect.h" |
106 | #include "syssignal.h" | |
107 | #include "syswait.h" | |
d0d6b7c5 | 108 | |
872870b2 JD |
109 | #if defined (USE_GTK) || defined (HAVE_GCONF) |
110 | #include "xgselect.h" | |
111 | #endif /* defined (USE_GTK) || defined (HAVE_GCONF) */ | |
3d608a86 J |
112 | #ifdef HAVE_NS |
113 | #include "nsterm.h" | |
114 | #endif | |
fdb183d6 DN |
115 | extern int timers_run; |
116 | ||
117 | Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid; | |
118 | Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime; | |
119 | Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs; | |
120 | Lisp_Object Quser, Qgroup, Qetime, Qpcpu, Qpmem, Qtime, Qctime; | |
121 | Lisp_Object QCname, QCtype; | |
122 | \f | |
123 | /* Non-zero if keyboard input is on hold, zero otherwise. */ | |
124 | ||
125 | static int kbd_is_on_hold; | |
126 | ||
127 | /* Nonzero means delete a process right away if it exits. */ | |
128 | static int delete_exited_processes; | |
129 | ||
130 | /* Nonzero means don't run process sentinels. This is used | |
131 | when exiting. */ | |
132 | int inhibit_sentinels; | |
133 | ||
f388c88a EZ |
134 | #ifdef subprocesses |
135 | ||
dd2281ae | 136 | Lisp_Object Qprocessp; |
324e68ba | 137 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 138 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
f00c449b | 139 | Lisp_Object Qlocal, Qipv4, Qdatagram, Qseqpacket; |
d888760c | 140 | Lisp_Object Qreal, Qnetwork, Qserial; |
e1652a86 KS |
141 | #ifdef AF_INET6 |
142 | Lisp_Object Qipv6; | |
143 | #endif | |
d888760c GM |
144 | Lisp_Object QCport, QCspeed, QCprocess; |
145 | Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; | |
146 | Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
f388c88a | 147 | Lisp_Object QCbuffer, QChost, QCservice; |
e690ca94 | 148 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 149 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 150 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
6545aada | 151 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
152 | /* QCfamily is declared and initialized in xfaces.c, |
153 | QCfilter in keyboard.c. */ | |
154 | extern Lisp_Object QCfamily, QCfilter; | |
155 | ||
d0d6b7c5 JB |
156 | /* Qexit is declared and initialized in eval.c. */ |
157 | ||
e0f712ba AC |
158 | /* QCfamily is defined in xfaces.c. */ |
159 | extern Lisp_Object QCfamily; | |
160 | /* QCfilter is defined in keyboard.c. */ | |
161 | extern Lisp_Object QCfilter; | |
162 | ||
d888760c GM |
163 | #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork)) |
164 | #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork)) | |
165 | #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial)) | |
166 | #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial)) | |
d0d6b7c5 JB |
167 | |
168 | /* Define first descriptor number available for subprocesses. */ | |
d0d6b7c5 | 169 | #define FIRST_PROC_DESC 3 |
d0d6b7c5 JB |
170 | |
171 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
172 | testing SIGCHLD. */ | |
173 | ||
174 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
175 | #define SIGCHLD SIGCLD | |
176 | #endif /* SIGCLD */ | |
177 | ||
8ea90aa3 | 178 | extern const char *get_operating_system_release (void); |
41d03b9a | 179 | |
d888760c GM |
180 | /* From sysdep.c or w32.c */ |
181 | extern int serial_open (char *port); | |
182 | extern void serial_configure (struct Lisp_Process *p, Lisp_Object contact); | |
d888760c | 183 | |
5f0929a7 RS |
184 | #ifndef HAVE_H_ERRNO |
185 | extern int h_errno; | |
186 | #endif | |
187 | ||
d0d6b7c5 JB |
188 | /* t means use pty, nil means use a pipe, |
189 | maybe other values to come. */ | |
dd2281ae | 190 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 | 191 | |
17d02632 KH |
192 | /* These next two vars are non-static since sysdep.c uses them in the |
193 | emulation of `select'. */ | |
d0d6b7c5 | 194 | /* Number of events of change of status of a process. */ |
17d02632 | 195 | int process_tick; |
d0d6b7c5 | 196 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 197 | int update_tick; |
d0d6b7c5 | 198 | |
dd2a17ab KS |
199 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
200 | ||
201 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
202 | #undef NON_BLOCKING_CONNECT | |
203 | #else | |
204 | #ifndef NON_BLOCKING_CONNECT | |
dd2a17ab KS |
205 | #ifdef HAVE_SELECT |
206 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
207 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
208 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
209 | #define NON_BLOCKING_CONNECT | |
210 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
211 | #endif /* O_NONBLOCK || O_NDELAY */ | |
212 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
213 | #endif /* HAVE_SELECT */ | |
dd2a17ab KS |
214 | #endif /* NON_BLOCKING_CONNECT */ |
215 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
216 | ||
e690ca94 KS |
217 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
218 | this system. We need to read full packets, so we need a | |
219 | "non-destructive" select. So we require either native select, | |
220 | or emulation of select using FIONREAD. */ | |
221 | ||
e690ca94 KS |
222 | #ifdef BROKEN_DATAGRAM_SOCKETS |
223 | #undef DATAGRAM_SOCKETS | |
224 | #else | |
225 | #ifndef DATAGRAM_SOCKETS | |
e690ca94 KS |
226 | #if defined (HAVE_SELECT) || defined (FIONREAD) |
227 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
228 | #define DATAGRAM_SOCKETS | |
229 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
230 | #endif /* HAVE_SELECT || FIONREAD */ | |
e690ca94 KS |
231 | #endif /* DATAGRAM_SOCKETS */ |
232 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
233 | ||
f00c449b SM |
234 | #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS |
235 | # define HAVE_SEQPACKET | |
236 | #endif | |
237 | ||
6b61353c KH |
238 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
239 | #ifdef EMACS_HAS_USECS | |
240 | #define ADAPTIVE_READ_BUFFERING | |
241 | #endif | |
242 | #endif | |
243 | ||
244 | #ifdef ADAPTIVE_READ_BUFFERING | |
245 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
246 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
247 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
248 | ||
db853b7a KS |
249 | /* Number of processes which have a non-zero read_output_delay, |
250 | and therefore might be delayed for adaptive read buffering. */ | |
6b61353c KH |
251 | |
252 | static int process_output_delay_count; | |
253 | ||
db853b7a | 254 | /* Non-zero if any process has non-nil read_output_skip. */ |
6b61353c KH |
255 | |
256 | static int process_output_skip; | |
257 | ||
258 | /* Non-nil means to delay reading process output to improve buffering. | |
259 | A value of t means that delay is reset after each send, any other | |
db853b7a KS |
260 | non-nil value does not reset the delay. A value of nil disables |
261 | adaptive read buffering completely. */ | |
6b61353c KH |
262 | static Lisp_Object Vprocess_adaptive_read_buffering; |
263 | #else | |
264 | #define process_output_delay_count 0 | |
265 | #endif | |
266 | ||
f57e2426 J |
267 | static int keyboard_bit_set (SELECT_TYPE *); |
268 | static void deactivate_process (Lisp_Object); | |
269 | static void status_notify (struct Lisp_Process *); | |
270 | static int read_process_output (Lisp_Object, int); | |
271 | static void create_pty (Lisp_Object); | |
41d03b9a | 272 | |
583dcae4 | 273 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 274 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 275 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
276 | #define POLL_FOR_INPUT |
277 | #endif | |
278 | ||
d3da34e0 JB |
279 | static Lisp_Object get_process (register Lisp_Object name); |
280 | static void exec_sentinel (Lisp_Object proc, Lisp_Object reason); | |
84af9896 | 281 | |
f388c88a EZ |
282 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
283 | ||
284 | static SELECT_TYPE input_wait_mask; | |
285 | ||
994d9841 | 286 | /* Mask that excludes keyboard input descriptor(s). */ |
a69281ff RS |
287 | |
288 | static SELECT_TYPE non_keyboard_wait_mask; | |
289 | ||
994d9841 | 290 | /* Mask that excludes process input descriptor(s). */ |
b5dc1c83 RS |
291 | |
292 | static SELECT_TYPE non_process_wait_mask; | |
293 | ||
994d9841 NR |
294 | /* Mask for the gpm mouse input descriptor. */ |
295 | ||
296 | static SELECT_TYPE gpm_wait_mask; | |
297 | ||
bad49fc7 | 298 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
299 | /* Mask of bits indicating the descriptors that we wait for connect to |
300 | complete on. Once they complete, they are removed from this mask | |
301 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
302 | ||
303 | static SELECT_TYPE connect_wait_mask; | |
304 | ||
305 | /* Number of bits set in connect_wait_mask. */ | |
306 | static int num_pending_connects; | |
307 | ||
bad49fc7 | 308 | #define IF_NON_BLOCKING_CONNECT(s) s |
f388c88a | 309 | #else /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 310 | #define IF_NON_BLOCKING_CONNECT(s) |
f388c88a | 311 | #endif /* NON_BLOCKING_CONNECT */ |
bad49fc7 | 312 | |
7d0e672e RS |
313 | /* The largest descriptor currently in use for a process object. */ |
314 | static int max_process_desc; | |
315 | ||
a69281ff RS |
316 | /* The largest descriptor currently in use for keyboard input. */ |
317 | static int max_keyboard_desc; | |
d0d6b7c5 | 318 | |
994d9841 NR |
319 | /* The largest descriptor currently in use for gpm mouse input. */ |
320 | static int max_gpm_desc; | |
321 | ||
d0d6b7c5 | 322 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ |
41f3aa98 | 323 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
324 | |
325 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 326 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
327 | |
328 | /* Buffered-ahead input char from process, indexed by channel. | |
329 | -1 means empty (no char is buffered). | |
330 | Used on sys V where the only way to tell if there is any | |
331 | output from the process is to read at least one char. | |
332 | Always -1 on systems that support FIONREAD. */ | |
333 | ||
e98d950b RS |
334 | /* Don't make static; need to access externally. */ |
335 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 336 | |
0fa1789e | 337 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
338 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
339 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 340 | |
e690ca94 KS |
341 | #ifdef DATAGRAM_SOCKETS |
342 | /* Table of `partner address' for datagram sockets. */ | |
343 | struct sockaddr_and_len { | |
344 | struct sockaddr *sa; | |
345 | int len; | |
346 | } datagram_address[MAXDESC]; | |
347 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
60f0fb11 | 348 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0) |
e690ca94 KS |
349 | #else |
350 | #define DATAGRAM_CHAN_P(chan) (0) | |
351 | #define DATAGRAM_CONN_P(proc) (0) | |
352 | #endif | |
353 | ||
93b4f699 RS |
354 | /* Maximum number of bytes to send to a pty without an eof. */ |
355 | static int pty_max_bytes; | |
3b9a3dfa | 356 | |
875e6b94 | 357 | #ifdef HAVE_PTYS |
e62cab61 DL |
358 | #ifdef HAVE_PTY_H |
359 | #include <pty.h> | |
360 | #endif | |
875e6b94 | 361 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
362 | |
363 | static char pty_name[24]; | |
875e6b94 | 364 | #endif |
d0d6b7c5 JB |
365 | \f |
366 | /* Compute the Lisp form of the process status, p->status, from | |
367 | the numeric status that was returned by `wait'. */ | |
368 | ||
bba104c1 | 369 | static Lisp_Object status_convert (int); |
f9738840 | 370 | |
ff6daed3 | 371 | static void |
d3da34e0 | 372 | update_status (struct Lisp_Process *p) |
d0d6b7c5 | 373 | { |
6bfd98e7 | 374 | eassert (p->raw_status_new); |
bba104c1 | 375 | p->status = status_convert (p->raw_status); |
6bfd98e7 | 376 | p->raw_status_new = 0; |
d0d6b7c5 JB |
377 | } |
378 | ||
177c0ea7 | 379 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
380 | the list that we use internally. */ |
381 | ||
ff6daed3 | 382 | static Lisp_Object |
bba104c1 | 383 | status_convert (int w) |
d0d6b7c5 JB |
384 | { |
385 | if (WIFSTOPPED (w)) | |
386 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
387 | else if (WIFEXITED (w)) | |
388 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
389 | WCOREDUMP (w) ? Qt : Qnil)); | |
390 | else if (WIFSIGNALED (w)) | |
391 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
392 | WCOREDUMP (w) ? Qt : Qnil)); | |
393 | else | |
394 | return Qrun; | |
395 | } | |
396 | ||
397 | /* Given a status-list, extract the three pieces of information | |
398 | and store them individually through the three pointers. */ | |
399 | ||
ff6daed3 | 400 | static void |
d3da34e0 | 401 | decode_status (Lisp_Object l, Lisp_Object *symbol, int *code, int *coredump) |
d0d6b7c5 JB |
402 | { |
403 | Lisp_Object tem; | |
404 | ||
bcd69aea | 405 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
406 | { |
407 | *symbol = l; | |
408 | *code = 0; | |
409 | *coredump = 0; | |
410 | } | |
411 | else | |
412 | { | |
70949dac KR |
413 | *symbol = XCAR (l); |
414 | tem = XCDR (l); | |
415 | *code = XFASTINT (XCAR (tem)); | |
416 | tem = XCDR (tem); | |
d0d6b7c5 JB |
417 | *coredump = !NILP (tem); |
418 | } | |
419 | } | |
420 | ||
421 | /* Return a string describing a process status list. */ | |
422 | ||
116c423c | 423 | static Lisp_Object |
d3da34e0 | 424 | status_message (struct Lisp_Process *p) |
d0d6b7c5 | 425 | { |
116c423c | 426 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
427 | Lisp_Object symbol; |
428 | int code, coredump; | |
429 | Lisp_Object string, string2; | |
430 | ||
431 | decode_status (status, &symbol, &code, &coredump); | |
432 | ||
433 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
434 | { | |
68c45bf0 | 435 | char *signame; |
ca9c0567 | 436 | synchronize_system_messages_locale (); |
68c45bf0 | 437 | signame = strsignal (code); |
b97ad9ea | 438 | if (signame == 0) |
66bd43d1 KH |
439 | string = build_string ("unknown"); |
440 | else | |
441 | { | |
442 | int c1, c2; | |
443 | ||
444 | string = make_unibyte_string (signame, strlen (signame)); | |
445 | if (! NILP (Vlocale_coding_system)) | |
446 | string = (code_convert_string_norecord | |
447 | (string, Vlocale_coding_system, 0)); | |
62a6e103 | 448 | c1 = STRING_CHAR ((char *) SDATA (string)); |
66bd43d1 KH |
449 | c2 = DOWNCASE (c1); |
450 | if (c1 != c2) | |
4735b74e | 451 | Faset (string, make_number (0), make_number (c2)); |
66bd43d1 | 452 | } |
d0d6b7c5 | 453 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
d0d6b7c5 JB |
454 | return concat2 (string, string2); |
455 | } | |
456 | else if (EQ (symbol, Qexit)) | |
457 | { | |
116c423c KS |
458 | if (NETCONN1_P (p)) |
459 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
460 | if (code == 0) |
461 | return build_string ("finished\n"); | |
f2980264 | 462 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 463 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
464 | return concat3 (build_string ("exited abnormally with code "), |
465 | string, string2); | |
d0d6b7c5 | 466 | } |
dd2a17ab KS |
467 | else if (EQ (symbol, Qfailed)) |
468 | { | |
469 | string = Fnumber_to_string (make_number (code)); | |
470 | string2 = build_string ("\n"); | |
e690ca94 KS |
471 | return concat3 (build_string ("failed with code "), |
472 | string, string2); | |
dd2a17ab | 473 | } |
d0d6b7c5 JB |
474 | else |
475 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
476 | } | |
477 | \f | |
478 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 479 | |
875e6b94 KH |
480 | /* Open an available pty, returning a file descriptor. |
481 | Return -1 on failure. | |
482 | The file name of the terminal corresponding to the pty | |
483 | is left in the variable pty_name. */ | |
484 | ||
ff6daed3 | 485 | static int |
d3da34e0 | 486 | allocate_pty (void) |
d0d6b7c5 | 487 | { |
dfcf069d | 488 | register int c, i; |
d0d6b7c5 JB |
489 | int fd; |
490 | ||
491 | #ifdef PTY_ITERATION | |
492 | PTY_ITERATION | |
493 | #else | |
494 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
495 | for (i = 0; i < 16; i++) | |
496 | #endif | |
497 | { | |
26d7389d | 498 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
499 | #ifdef PTY_NAME_SPRINTF |
500 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
501 | #else |
502 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
503 | #endif /* no PTY_NAME_SPRINTF */ |
504 | ||
4d7c105e RS |
505 | #ifdef PTY_OPEN |
506 | PTY_OPEN; | |
507 | #else /* no PTY_OPEN */ | |
34967d0f | 508 | { |
34967d0f SM |
509 | { /* Some systems name their pseudoterminals so that there are gaps in |
510 | the usual sequence - for example, on HP9000/S700 systems, there | |
511 | are no pseudoterminals with names ending in 'f'. So we wait for | |
512 | three failures in a row before deciding that we've reached the | |
513 | end of the ptys. */ | |
514 | int failed_count = 0; | |
f3d9532b | 515 | |
34967d0f SM |
516 | if (stat (pty_name, &stb) < 0) |
517 | { | |
518 | failed_count++; | |
519 | if (failed_count >= 3) | |
520 | return -1; | |
521 | } | |
522 | else | |
523 | failed_count = 0; | |
32676c08 | 524 | } |
34967d0f SM |
525 | # ifdef O_NONBLOCK |
526 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
527 | # else | |
528 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
529 | # endif | |
34967d0f | 530 | } |
4d7c105e | 531 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
532 | |
533 | if (fd >= 0) | |
534 | { | |
535 | /* check to make certain that both sides are available | |
536 | this avoids a nasty yet stupid bug in rlogins */ | |
537 | #ifdef PTY_TTY_NAME_SPRINTF | |
538 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 | 539 | #else |
63136da6 | 540 | sprintf (pty_name, "/dev/tty%c%x", c, i); |
d0d6b7c5 | 541 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
d0d6b7c5 JB |
542 | if (access (pty_name, 6) != 0) |
543 | { | |
68c45bf0 | 544 | emacs_close (fd); |
132d0475 | 545 | # ifndef __sgi |
d0d6b7c5 | 546 | continue; |
34967d0f | 547 | # else |
d0d6b7c5 | 548 | return -1; |
132d0475 | 549 | # endif /* __sgi */ |
d0d6b7c5 | 550 | } |
d0d6b7c5 JB |
551 | setup_pty (fd); |
552 | return fd; | |
553 | } | |
554 | } | |
555 | return -1; | |
556 | } | |
557 | #endif /* HAVE_PTYS */ | |
558 | \f | |
ff6daed3 | 559 | static Lisp_Object |
d3da34e0 | 560 | make_process (Lisp_Object name) |
d0d6b7c5 JB |
561 | { |
562 | register Lisp_Object val, tem, name1; | |
563 | register struct Lisp_Process *p; | |
564 | char suffix[10]; | |
565 | register int i; | |
566 | ||
98423852 | 567 | p = allocate_process (); |
23d6bb9c | 568 | |
60f0fb11 SM |
569 | p->infd = -1; |
570 | p->outfd = -1; | |
571 | p->tick = 0; | |
572 | p->update_tick = 0; | |
6bfd98e7 | 573 | p->pid = 0; |
fd41ad98 | 574 | p->pty_flag = 0; |
6bfd98e7 | 575 | p->raw_status_new = 0; |
d0d6b7c5 JB |
576 | p->status = Qrun; |
577 | p->mark = Fmake_marker (); | |
847c048e | 578 | p->kill_without_query = 0; |
d0d6b7c5 | 579 | |
6b61353c | 580 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
581 | p->adaptive_read_buffering = 0; |
582 | p->read_output_delay = 0; | |
583 | p->read_output_skip = 0; | |
6b61353c KH |
584 | #endif |
585 | ||
d0d6b7c5 JB |
586 | /* If name is already in use, modify it until it is unused. */ |
587 | ||
588 | name1 = name; | |
589 | for (i = 1; ; i++) | |
590 | { | |
591 | tem = Fget_process (name1); | |
592 | if (NILP (tem)) break; | |
593 | sprintf (suffix, "<%d>", i); | |
594 | name1 = concat2 (name, build_string (suffix)); | |
595 | } | |
596 | name = name1; | |
597 | p->name = name; | |
23d6bb9c | 598 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
599 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
600 | return val; | |
601 | } | |
602 | ||
ff6daed3 | 603 | static void |
d3da34e0 | 604 | remove_process (register Lisp_Object proc) |
d0d6b7c5 JB |
605 | { |
606 | register Lisp_Object pair; | |
607 | ||
608 | pair = Frassq (proc, Vprocess_alist); | |
609 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
610 | |
611 | deactivate_process (proc); | |
612 | } | |
03f04413 | 613 | |
d0d6b7c5 JB |
614 | \f |
615 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 | 616 | doc: /* Return t if OBJECT is a process. */) |
5842a27b | 617 | (Lisp_Object object) |
d0d6b7c5 | 618 | { |
4ee3e309 | 619 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
620 | } |
621 | ||
622 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 | 623 | doc: /* Return the process named NAME, or nil if there is none. */) |
5842a27b | 624 | (register Lisp_Object name) |
d0d6b7c5 | 625 | { |
bcd69aea | 626 | if (PROCESSP (name)) |
d0d6b7c5 | 627 | return name; |
b7826503 | 628 | CHECK_STRING (name); |
d0d6b7c5 JB |
629 | return Fcdr (Fassoc (name, Vprocess_alist)); |
630 | } | |
631 | ||
ebb9e16f JB |
632 | /* This is how commands for the user decode process arguments. It |
633 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
634 | Buffers denote the first process in the buffer, and nil denotes the | |
635 | current buffer. */ | |
d0d6b7c5 | 636 | |
77b221b1 | 637 | static Lisp_Object |
d3da34e0 | 638 | get_process (register Lisp_Object name) |
d0d6b7c5 | 639 | { |
1619761d KH |
640 | register Lisp_Object proc, obj; |
641 | if (STRINGP (name)) | |
642 | { | |
643 | obj = Fget_process (name); | |
644 | if (NILP (obj)) | |
645 | obj = Fget_buffer (name); | |
646 | if (NILP (obj)) | |
d5db4077 | 647 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
648 | } |
649 | else if (NILP (name)) | |
650 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 651 | else |
1619761d KH |
652 | obj = name; |
653 | ||
654 | /* Now obj should be either a buffer object or a process object. | |
655 | */ | |
656 | if (BUFFERP (obj)) | |
d0d6b7c5 | 657 | { |
1619761d | 658 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 659 | if (NILP (proc)) |
d5db4077 | 660 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 661 | } |
d0d6b7c5 | 662 | else |
1619761d | 663 | { |
b7826503 | 664 | CHECK_PROCESS (obj); |
1619761d KH |
665 | proc = obj; |
666 | } | |
667 | return proc; | |
d0d6b7c5 JB |
668 | } |
669 | ||
a5cfdda8 KS |
670 | |
671 | #ifdef SIGCHLD | |
672 | /* Fdelete_process promises to immediately forget about the process, but in | |
673 | reality, Emacs needs to remember those processes until they have been | |
674 | treated by sigchld_handler; otherwise this handler would consider the | |
675 | process as being synchronous and say that the synchronous process is | |
676 | dead. */ | |
677 | static Lisp_Object deleted_pid_list; | |
678 | #endif | |
679 | ||
d0d6b7c5 | 680 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, |
fdb82f93 PJ |
681 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
682 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
683 | nil, indicating the current buffer's process. */) | |
5842a27b | 684 | (register Lisp_Object process) |
d0d6b7c5 | 685 | { |
ff6daed3 KS |
686 | register struct Lisp_Process *p; |
687 | ||
4ee3e309 | 688 | process = get_process (process); |
ff6daed3 KS |
689 | p = XPROCESS (process); |
690 | ||
6bfd98e7 | 691 | p->raw_status_new = 0; |
d888760c | 692 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 693 | { |
ff6daed3 | 694 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
60f0fb11 | 695 | p->tick = ++process_tick; |
ff6daed3 | 696 | status_notify (p); |
e42bdf01 | 697 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 698 | } |
60f0fb11 | 699 | else if (p->infd >= 0) |
d0d6b7c5 | 700 | { |
a5cfdda8 KS |
701 | #ifdef SIGCHLD |
702 | Lisp_Object symbol; | |
d30fe779 EZ |
703 | /* Assignment to EMACS_INT stops GCC whining about limited range |
704 | of data type. */ | |
29ed4d51 | 705 | EMACS_INT pid = p->pid; |
a5cfdda8 KS |
706 | |
707 | /* No problem storing the pid here, as it is still in Vprocess_alist. */ | |
d30fe779 | 708 | deleted_pid_list = Fcons (make_fixnum_or_float (pid), |
a5cfdda8 KS |
709 | /* GC treated elements set to nil. */ |
710 | Fdelq (Qnil, deleted_pid_list)); | |
711 | /* If the process has already signaled, remove it from the list. */ | |
712 | if (p->raw_status_new) | |
713 | update_status (p); | |
714 | symbol = p->status; | |
715 | if (CONSP (p->status)) | |
716 | symbol = XCAR (p->status); | |
717 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
29ed4d51 CY |
718 | deleted_pid_list |
719 | = Fdelete (make_fixnum_or_float (pid), deleted_pid_list); | |
a5cfdda8 KS |
720 | else |
721 | #endif | |
722 | { | |
723 | Fkill_process (process, Qnil); | |
724 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ | |
725 | p->status | |
726 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); | |
60f0fb11 | 727 | p->tick = ++process_tick; |
a5cfdda8 | 728 | status_notify (p); |
e42bdf01 | 729 | redisplay_preserve_echo_area (13); |
a5cfdda8 | 730 | } |
d0d6b7c5 | 731 | } |
4ee3e309 | 732 | remove_process (process); |
d0d6b7c5 JB |
733 | return Qnil; |
734 | } | |
735 | \f | |
736 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
737 | doc: /* Return the status of PROCESS. |
738 | The returned value is one of the following symbols: | |
739 | run -- for a process that is running. | |
740 | stop -- for a process stopped but continuable. | |
741 | exit -- for a process that has exited. | |
742 | signal -- for a process that has got a fatal signal. | |
743 | open -- for a network stream connection that is open. | |
e690ca94 | 744 | listen -- for a network stream server that is listening. |
fdb82f93 | 745 | closed -- for a network stream connection that is closed. |
e4984112 KS |
746 | connect -- when waiting for a non-blocking connection to complete. |
747 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
748 | nil -- if arg is a process name and no such process exists. |
749 | PROCESS may be a process, a buffer, the name of a process, or | |
750 | nil, indicating the current buffer's process. */) | |
5842a27b | 751 | (register Lisp_Object process) |
d0d6b7c5 JB |
752 | { |
753 | register struct Lisp_Process *p; | |
754 | register Lisp_Object status; | |
343f4114 | 755 | |
4ee3e309 EN |
756 | if (STRINGP (process)) |
757 | process = Fget_process (process); | |
343f4114 | 758 | else |
4ee3e309 | 759 | process = get_process (process); |
343f4114 | 760 | |
4ee3e309 EN |
761 | if (NILP (process)) |
762 | return process; | |
343f4114 | 763 | |
4ee3e309 | 764 | p = XPROCESS (process); |
6bfd98e7 | 765 | if (p->raw_status_new) |
d0d6b7c5 JB |
766 | update_status (p); |
767 | status = p->status; | |
bcd69aea | 768 | if (CONSP (status)) |
70949dac | 769 | status = XCAR (status); |
d888760c | 770 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 771 | { |
e690ca94 | 772 | if (EQ (status, Qexit)) |
d0d6b7c5 | 773 | status = Qclosed; |
e690ca94 KS |
774 | else if (EQ (p->command, Qt)) |
775 | status = Qstop; | |
776 | else if (EQ (status, Qrun)) | |
777 | status = Qopen; | |
d0d6b7c5 JB |
778 | } |
779 | return status; | |
780 | } | |
781 | ||
782 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
783 | 1, 1, 0, | |
fdb82f93 PJ |
784 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
785 | If PROCESS has not yet exited or died, return 0. */) | |
5842a27b | 786 | (register Lisp_Object process) |
d0d6b7c5 | 787 | { |
b7826503 | 788 | CHECK_PROCESS (process); |
6bfd98e7 | 789 | if (XPROCESS (process)->raw_status_new) |
4ee3e309 EN |
790 | update_status (XPROCESS (process)); |
791 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 792 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
793 | return make_number (0); |
794 | } | |
795 | ||
796 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 797 | doc: /* Return the process id of PROCESS. |
f3d9532b | 798 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 | 799 | For a network connection, this value is nil. */) |
5842a27b | 800 | (register Lisp_Object process) |
d0d6b7c5 | 801 | { |
d30fe779 EZ |
802 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
803 | data type. */ | |
804 | EMACS_INT pid; | |
805 | ||
b7826503 | 806 | CHECK_PROCESS (process); |
d30fe779 EZ |
807 | pid = XPROCESS (process)->pid; |
808 | return (pid ? make_fixnum_or_float (pid) : Qnil); | |
d0d6b7c5 JB |
809 | } |
810 | ||
811 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
812 | doc: /* Return the name of PROCESS, as a string. |
813 | This is the name of the program invoked in PROCESS, | |
814 | possibly modified to make it unique among process names. */) | |
5842a27b | 815 | (register Lisp_Object process) |
d0d6b7c5 | 816 | { |
b7826503 | 817 | CHECK_PROCESS (process); |
4ee3e309 | 818 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
819 | } |
820 | ||
821 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
822 | doc: /* Return the command that was executed to start PROCESS. |
823 | This is a list of strings, the first string being the program executed | |
824 | and the rest of the strings being the arguments given to it. | |
d888760c GM |
825 | For a network or serial process, this is nil (process is running) or t |
826 | \(process is stopped). */) | |
5842a27b | 827 | (register Lisp_Object process) |
d0d6b7c5 | 828 | { |
b7826503 | 829 | CHECK_PROCESS (process); |
4ee3e309 | 830 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
831 | } |
832 | ||
3b9a3dfa | 833 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
834 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
835 | This is the terminal that the process itself reads and writes on, | |
836 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
5842a27b | 837 | (register Lisp_Object process) |
3b9a3dfa | 838 | { |
b7826503 | 839 | CHECK_PROCESS (process); |
4ee3e309 | 840 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
841 | } |
842 | ||
d0d6b7c5 | 843 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
844 | 2, 2, 0, |
845 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
5842a27b | 846 | (register Lisp_Object process, Lisp_Object buffer) |
d0d6b7c5 | 847 | { |
e690ca94 KS |
848 | struct Lisp_Process *p; |
849 | ||
b7826503 | 850 | CHECK_PROCESS (process); |
d0d6b7c5 | 851 | if (!NILP (buffer)) |
b7826503 | 852 | CHECK_BUFFER (buffer); |
e690ca94 KS |
853 | p = XPROCESS (process); |
854 | p->buffer = buffer; | |
d888760c | 855 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 856 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); |
03f04413 | 857 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
858 | return buffer; |
859 | } | |
860 | ||
861 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
862 | 1, 1, 0, |
863 | doc: /* Return the buffer PROCESS is associated with. | |
864 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
5842a27b | 865 | (register Lisp_Object process) |
d0d6b7c5 | 866 | { |
b7826503 | 867 | CHECK_PROCESS (process); |
4ee3e309 | 868 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
869 | } |
870 | ||
871 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
872 | 1, 1, 0, |
873 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
5842a27b | 874 | (register Lisp_Object process) |
d0d6b7c5 | 875 | { |
b7826503 | 876 | CHECK_PROCESS (process); |
4ee3e309 | 877 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
878 | } |
879 | ||
880 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
881 | 2, 2, 0, |
882 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
7b82c3b6 | 883 | A value of t means stop accepting output from the process. |
3452df9e KS |
884 | |
885 | When a process has a filter, its buffer is not used for output. | |
886 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 887 | passed to the filter. |
3452df9e | 888 | |
fdb82f93 | 889 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
890 | The string argument is normally a multibyte string, except: |
891 | - if the process' input coding system is no-conversion or raw-text, | |
892 | it is a unibyte string (the non-converted input), or else | |
893 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
894 | string (the result of converting the decoded input multibyte | |
895 | string to unibyte with `string-make-unibyte'). */) | |
5842a27b | 896 | (register Lisp_Object process, Lisp_Object filter) |
d0d6b7c5 | 897 | { |
471f86b9 | 898 | struct Lisp_Process *p; |
177c0ea7 | 899 | |
b7826503 | 900 | CHECK_PROCESS (process); |
471f86b9 GM |
901 | p = XPROCESS (process); |
902 | ||
903 | /* Don't signal an error if the process' input file descriptor | |
904 | is closed. This could make debugging Lisp more difficult, | |
905 | for example when doing something like | |
906 | ||
907 | (setq process (start-process ...)) | |
908 | (debug) | |
909 | (set-process-filter process ...) */ | |
177c0ea7 | 910 | |
60f0fb11 | 911 | if (p->infd >= 0) |
a69281ff | 912 | { |
e690ca94 | 913 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 | 914 | { |
60f0fb11 SM |
915 | FD_CLR (p->infd, &input_wait_mask); |
916 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 917 | } |
e690ca94 | 918 | else if (EQ (p->filter, Qt) |
d888760c GM |
919 | /* Network or serial process not stopped: */ |
920 | && !EQ (p->command, Qt)) | |
471f86b9 | 921 | { |
60f0fb11 SM |
922 | FD_SET (p->infd, &input_wait_mask); |
923 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
471f86b9 | 924 | } |
a69281ff | 925 | } |
177c0ea7 | 926 | |
471f86b9 | 927 | p->filter = filter; |
d888760c | 928 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
e690ca94 | 929 | p->childp = Fplist_put (p->childp, QCfilter, filter); |
03f04413 | 930 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
931 | return filter; |
932 | } | |
933 | ||
934 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
935 | 1, 1, 0, |
936 | doc: /* Returns the filter function of PROCESS; nil if none. | |
937 | See `set-process-filter' for more info on filter functions. */) | |
5842a27b | 938 | (register Lisp_Object process) |
d0d6b7c5 | 939 | { |
b7826503 | 940 | CHECK_PROCESS (process); |
4ee3e309 | 941 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
942 | } |
943 | ||
944 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
945 | 2, 2, 0, |
946 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
947 | The sentinel is called as a function when the process changes state. | |
948 | It gets two arguments: the process, and a string describing the change. */) | |
5842a27b | 949 | (register Lisp_Object process, Lisp_Object sentinel) |
d0d6b7c5 | 950 | { |
6b61353c KH |
951 | struct Lisp_Process *p; |
952 | ||
b7826503 | 953 | CHECK_PROCESS (process); |
6b61353c KH |
954 | p = XPROCESS (process); |
955 | ||
956 | p->sentinel = sentinel; | |
d888760c | 957 | if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
6b61353c | 958 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); |
d0d6b7c5 JB |
959 | return sentinel; |
960 | } | |
961 | ||
962 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
963 | 1, 1, 0, |
964 | doc: /* Return the sentinel of PROCESS; nil if none. | |
965 | See `set-process-sentinel' for more info on sentinels. */) | |
5842a27b | 966 | (register Lisp_Object process) |
d0d6b7c5 | 967 | { |
b7826503 | 968 | CHECK_PROCESS (process); |
4ee3e309 | 969 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
970 | } |
971 | ||
396df322 | 972 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
973 | Sset_process_window_size, 3, 3, 0, |
974 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
5842a27b | 975 | (register Lisp_Object process, Lisp_Object height, Lisp_Object width) |
396df322 | 976 | { |
b7826503 PJ |
977 | CHECK_PROCESS (process); |
978 | CHECK_NATNUM (height); | |
979 | CHECK_NATNUM (width); | |
177c0ea7 | 980 | |
60f0fb11 SM |
981 | if (XPROCESS (process)->infd < 0 |
982 | || set_window_size (XPROCESS (process)->infd, | |
471f86b9 | 983 | XINT (height), XINT (width)) <= 0) |
396df322 RS |
984 | return Qnil; |
985 | else | |
986 | return Qt; | |
987 | } | |
988 | ||
52a1b894 | 989 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
990 | Fset_process_inherit_coding_system_flag, |
991 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
992 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
993 | If the second argument FLAG is non-nil, then the variable | |
994 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
995 | will be bound to the value of the coding system used to decode | |
996 | the process output. | |
997 | ||
998 | This is useful when the coding system specified for the process buffer | |
999 | leaves either the character code conversion or the end-of-line conversion | |
1000 | unspecified, or if the coding system used to decode the process output | |
1001 | is more appropriate for saving the process buffer. | |
1002 | ||
1003 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1004 | starting the process is an alternative way of setting the inherit flag | |
1005 | for the process which will run. */) | |
5842a27b | 1006 | (register Lisp_Object process, Lisp_Object flag) |
52a1b894 | 1007 | { |
b7826503 | 1008 | CHECK_PROCESS (process); |
60f0fb11 | 1009 | XPROCESS (process)->inherit_coding_system_flag = !NILP (flag); |
52a1b894 EZ |
1010 | return flag; |
1011 | } | |
1012 | ||
e690ca94 KS |
1013 | DEFUN ("set-process-query-on-exit-flag", |
1014 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1015 | 2, 2, 0, | |
1016 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1017 | If the second argument FLAG is non-nil, Emacs will query the user before |
10be7e0d | 1018 | exiting or killing a buffer if PROCESS is running. */) |
5842a27b | 1019 | (register Lisp_Object process, Lisp_Object flag) |
d0d6b7c5 | 1020 | { |
b7826503 | 1021 | CHECK_PROCESS (process); |
60f0fb11 | 1022 | XPROCESS (process)->kill_without_query = NILP (flag); |
e690ca94 | 1023 | return flag; |
d0d6b7c5 | 1024 | } |
312c9964 | 1025 | |
e690ca94 KS |
1026 | DEFUN ("process-query-on-exit-flag", |
1027 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1028 | 1, 1, 0, |
f3d9532b | 1029 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
5842a27b | 1030 | (register Lisp_Object process) |
de282a05 | 1031 | { |
b7826503 | 1032 | CHECK_PROCESS (process); |
60f0fb11 | 1033 | return (XPROCESS (process)->kill_without_query ? Qnil : Qt); |
e690ca94 KS |
1034 | } |
1035 | ||
1036 | #ifdef DATAGRAM_SOCKETS | |
d3da34e0 | 1037 | Lisp_Object Fprocess_datagram_address (Lisp_Object process); |
e690ca94 KS |
1038 | #endif |
1039 | ||
1040 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1041 | 1, 2, 0, | |
1042 | doc: /* Return the contact info of PROCESS; t for a real child. | |
d888760c GM |
1043 | For a network or serial connection, the value depends on the optional |
1044 | KEY arg. If KEY is nil, value is a cons cell of the form (HOST | |
1045 | SERVICE) for a network connection or (PORT SPEED) for a serial | |
1046 | connection. If KEY is t, the complete contact information for the | |
1047 | connection is returned, else the specific value for the keyword KEY is | |
1048 | returned. See `make-network-process' or `make-serial-process' for a | |
1049 | list of keywords. */) | |
5842a27b | 1050 | (register Lisp_Object process, Lisp_Object key) |
e690ca94 KS |
1051 | { |
1052 | Lisp_Object contact; | |
1053 | ||
1054 | CHECK_PROCESS (process); | |
1055 | contact = XPROCESS (process)->childp; | |
1056 | ||
1057 | #ifdef DATAGRAM_SOCKETS | |
1058 | if (DATAGRAM_CONN_P (process) | |
1059 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1060 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1061 | Fprocess_datagram_address (process)); |
1062 | #endif | |
1063 | ||
d888760c | 1064 | if ((!NETCONN_P (process) && !SERIALCONN_P (process)) || EQ (key, Qt)) |
e690ca94 | 1065 | return contact; |
d888760c | 1066 | if (NILP (key) && NETCONN_P (process)) |
e690ca94 KS |
1067 | return Fcons (Fplist_get (contact, QChost), |
1068 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
d888760c GM |
1069 | if (NILP (key) && SERIALCONN_P (process)) |
1070 | return Fcons (Fplist_get (contact, QCport), | |
1071 | Fcons (Fplist_get (contact, QCspeed), Qnil)); | |
e690ca94 | 1072 | return Fplist_get (contact, key); |
de282a05 RS |
1073 | } |
1074 | ||
faa7db08 KS |
1075 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1076 | 1, 1, 0, | |
1077 | doc: /* Return the plist of PROCESS. */) | |
5842a27b | 1078 | (register Lisp_Object process) |
365aee82 | 1079 | { |
ac4a7584 | 1080 | CHECK_PROCESS (process); |
faa7db08 | 1081 | return XPROCESS (process)->plist; |
ac4a7584 | 1082 | } |
365aee82 | 1083 | |
faa7db08 KS |
1084 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1085 | 2, 2, 0, | |
26a086c6 | 1086 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
5842a27b | 1087 | (register Lisp_Object process, Lisp_Object plist) |
ac4a7584 | 1088 | { |
365aee82 | 1089 | CHECK_PROCESS (process); |
faa7db08 | 1090 | CHECK_LIST (plist); |
365aee82 | 1091 | |
faa7db08 | 1092 | XPROCESS (process)->plist = plist; |
26a086c6 | 1093 | return plist; |
365aee82 KS |
1094 | } |
1095 | ||
312c9964 RS |
1096 | #if 0 /* Turned off because we don't currently record this info |
1097 | in the process. Perhaps add it. */ | |
1098 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1099 | doc: /* Return the connection type of PROCESS. |
1100 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1101 | a socket connection. */) | |
5842a27b | 1102 | (Lisp_Object process) |
312c9964 RS |
1103 | { |
1104 | return XPROCESS (process)->type; | |
1105 | } | |
1106 | #endif | |
2a7bb882 | 1107 | |
d888760c GM |
1108 | DEFUN ("process-type", Fprocess_type, Sprocess_type, 1, 1, 0, |
1109 | doc: /* Return the connection type of PROCESS. | |
1110 | The value is either the symbol `real', `network', or `serial'. | |
1111 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
1112 | nil, indicating the current buffer's process. */) | |
5842a27b | 1113 | (Lisp_Object process) |
d888760c GM |
1114 | { |
1115 | Lisp_Object proc; | |
1116 | proc = get_process (process); | |
1117 | return XPROCESS (proc)->type; | |
1118 | } | |
991234f0 | 1119 | |
991234f0 | 1120 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, |
0dccee41 | 1121 | 1, 2, 0, |
991234f0 | 1122 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1123 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1124 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1125 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1126 | number in the string, even when present in ADDRESS. |
1127 | Returns nil if format of ADDRESS is invalid. */) | |
5842a27b | 1128 | (Lisp_Object address, Lisp_Object omit_port) |
991234f0 | 1129 | { |
991234f0 KS |
1130 | if (NILP (address)) |
1131 | return Qnil; | |
1132 | ||
1133 | if (STRINGP (address)) /* AF_LOCAL */ | |
1134 | return address; | |
1135 | ||
e1652a86 | 1136 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1137 | { |
1138 | register struct Lisp_Vector *p = XVECTOR (address); | |
ded83665 | 1139 | Lisp_Object args[10]; |
0dccee41 | 1140 | int nargs, i; |
991234f0 | 1141 | |
e1652a86 | 1142 | if (p->size == 4 || (p->size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1143 | { |
1144 | args[0] = build_string ("%d.%d.%d.%d"); | |
1145 | nargs = 4; | |
1146 | } | |
1147 | else if (p->size == 5) | |
1148 | { | |
1149 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1150 | nargs = 5; | |
1151 | } | |
e1652a86 KS |
1152 | else if (p->size == 8 || (p->size == 9 && !NILP (omit_port))) |
1153 | { | |
1154 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1155 | nargs = 8; | |
1156 | } | |
1157 | else if (p->size == 9) | |
1158 | { | |
1159 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1160 | nargs = 9; | |
1161 | } | |
0dccee41 | 1162 | else |
991234f0 KS |
1163 | return Qnil; |
1164 | ||
0dccee41 | 1165 | for (i = 0; i < nargs; i++) |
cbf23adb JB |
1166 | { |
1167 | EMACS_INT element = XINT (p->contents[i]); | |
1168 | ||
1169 | if (element < 0 || element > 65535) | |
1170 | return Qnil; | |
1171 | ||
1172 | if (nargs <= 5 /* IPv4 */ | |
1173 | && i < 4 /* host, not port */ | |
1174 | && element > 255) | |
1175 | return Qnil; | |
1176 | ||
1177 | args[i+1] = p->contents[i]; | |
1178 | } | |
1179 | ||
0dccee41 | 1180 | return Fformat (nargs+1, args); |
991234f0 KS |
1181 | } |
1182 | ||
1183 | if (CONSP (address)) | |
1184 | { | |
1185 | Lisp_Object args[2]; | |
1186 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1187 | args[1] = Fcar (address); |
991234f0 | 1188 | return Fformat (2, args); |
991234f0 KS |
1189 | } |
1190 | ||
1191 | return Qnil; | |
1192 | } | |
d0d6b7c5 | 1193 | \f |
ff6daed3 | 1194 | static Lisp_Object |
d3da34e0 | 1195 | list_processes_1 (Lisp_Object query_only) |
d0d6b7c5 JB |
1196 | { |
1197 | register Lisp_Object tail, tem; | |
1198 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1199 | register struct Lisp_Process *p; |
e690ca94 KS |
1200 | char tembuf[300]; |
1201 | int w_proc, w_buffer, w_tty; | |
1eed3bdc | 1202 | int exited = 0; |
e690ca94 KS |
1203 | Lisp_Object i_status, i_buffer, i_tty, i_command; |
1204 | ||
1205 | w_proc = 4; /* Proc */ | |
1206 | w_buffer = 6; /* Buffer */ | |
1207 | w_tty = 0; /* Omit if no ttys */ | |
1208 | ||
99784d63 | 1209 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
e690ca94 KS |
1210 | { |
1211 | int i; | |
1212 | ||
99784d63 | 1213 | proc = Fcdr (XCAR (tail)); |
e690ca94 | 1214 | p = XPROCESS (proc); |
d888760c | 1215 | if (NILP (p->type)) |
e690ca94 | 1216 | continue; |
60f0fb11 | 1217 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 KS |
1218 | continue; |
1219 | if (STRINGP (p->name) | |
d5db4077 | 1220 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1221 | w_proc = i; |
1222 | if (!NILP (p->buffer)) | |
1223 | { | |
e69c4cae SM |
1224 | if (NILP (XBUFFER (p->buffer)->name)) |
1225 | { | |
1226 | if (w_buffer < 8) | |
1227 | w_buffer = 8; /* (Killed) */ | |
1228 | } | |
d5db4077 | 1229 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1230 | w_buffer = i; |
1231 | } | |
1232 | if (STRINGP (p->tty_name) | |
d5db4077 | 1233 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1234 | w_tty = i; |
1235 | } | |
1236 | ||
1237 | XSETFASTINT (i_status, w_proc + 1); | |
1238 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1239 | if (w_tty) | |
1240 | { | |
1241 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
d3c0009d AS |
1242 | XSETFASTINT (i_command, XFASTINT (i_tty) + w_tty + 1); |
1243 | } | |
1244 | else | |
1245 | { | |
e690ca94 KS |
1246 | i_tty = Qnil; |
1247 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1248 | } | |
d0d6b7c5 | 1249 | |
22719df2 | 1250 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1251 | |
1252 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1253 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1254 | |
1255 | current_buffer->truncate_lines = Qt; | |
1256 | ||
e690ca94 KS |
1257 | write_string ("Proc", -1); |
1258 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1259 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1260 | if (!NILP (i_tty)) | |
1261 | { | |
1262 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1263 | } | |
1264 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1265 | write_string ("\n", -1); | |
1266 | ||
1267 | write_string ("----", -1); | |
1268 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1269 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1270 | if (!NILP (i_tty)) | |
1271 | { | |
1272 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1273 | } | |
1274 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1275 | write_string ("\n", -1); | |
d0d6b7c5 | 1276 | |
99784d63 | 1277 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 JB |
1278 | { |
1279 | Lisp_Object symbol; | |
1280 | ||
99784d63 | 1281 | proc = Fcdr (XCAR (tail)); |
d0d6b7c5 | 1282 | p = XPROCESS (proc); |
d888760c | 1283 | if (NILP (p->type)) |
d0d6b7c5 | 1284 | continue; |
60f0fb11 | 1285 | if (!NILP (query_only) && p->kill_without_query) |
e690ca94 | 1286 | continue; |
d0d6b7c5 JB |
1287 | |
1288 | Finsert (1, &p->name); | |
e690ca94 | 1289 | Findent_to (i_status, minspace); |
d0d6b7c5 | 1290 | |
6bfd98e7 | 1291 | if (p->raw_status_new) |
d0d6b7c5 JB |
1292 | update_status (p); |
1293 | symbol = p->status; | |
bcd69aea | 1294 | if (CONSP (p->status)) |
70949dac | 1295 | symbol = XCAR (p->status); |
d0d6b7c5 | 1296 | |
d0d6b7c5 JB |
1297 | if (EQ (symbol, Qsignal)) |
1298 | { | |
1299 | Lisp_Object tem; | |
1300 | tem = Fcar (Fcdr (p->status)); | |
7c2fb837 | 1301 | Fprinc (symbol, Qnil); |
d0d6b7c5 | 1302 | } |
d888760c | 1303 | else if (NETCONN1_P (p) || SERIALCONN1_P (p)) |
d0d6b7c5 | 1304 | { |
e690ca94 | 1305 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1306 | write_string ("closed", -1); |
e690ca94 KS |
1307 | else if (EQ (p->command, Qt)) |
1308 | write_string ("stopped", -1); | |
1309 | else if (EQ (symbol, Qrun)) | |
1310 | write_string ("open", -1); | |
d0d6b7c5 JB |
1311 | else |
1312 | Fprinc (symbol, Qnil); | |
1313 | } | |
d888760c GM |
1314 | else if (SERIALCONN1_P (p)) |
1315 | { | |
1316 | write_string ("running", -1); | |
1317 | } | |
d0d6b7c5 JB |
1318 | else |
1319 | Fprinc (symbol, Qnil); | |
1320 | ||
1321 | if (EQ (symbol, Qexit)) | |
1322 | { | |
1323 | Lisp_Object tem; | |
1324 | tem = Fcar (Fcdr (p->status)); | |
1325 | if (XFASTINT (tem)) | |
1326 | { | |
3162bafa | 1327 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1328 | write_string (tembuf, -1); |
1329 | } | |
1330 | } | |
1331 | ||
1eed3bdc KS |
1332 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) || EQ (symbol, Qclosed)) |
1333 | exited++; | |
d0d6b7c5 | 1334 | |
e690ca94 | 1335 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1336 | if (NILP (p->buffer)) |
1337 | insert_string ("(none)"); | |
1338 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1339 | insert_string ("(Killed)"); | |
1340 | else | |
1341 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1342 | ||
e690ca94 KS |
1343 | if (!NILP (i_tty)) |
1344 | { | |
1345 | Findent_to (i_tty, minspace); | |
1346 | if (STRINGP (p->tty_name)) | |
1347 | Finsert (1, &p->tty_name); | |
1348 | } | |
a9fde32e | 1349 | |
e690ca94 | 1350 | Findent_to (i_command, minspace); |
a9fde32e | 1351 | |
e690ca94 KS |
1352 | if (EQ (p->status, Qlisten)) |
1353 | { | |
1354 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1355 | if (INTEGERP (port)) | |
1356 | port = Fnumber_to_string (port); | |
991234f0 | 1357 | if (NILP (port)) |
0dccee41 | 1358 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1359 | sprintf (tembuf, "(network %s server on %s)\n", |
60f0fb11 | 1360 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1361 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1362 | insert_string (tembuf); |
1363 | } | |
1364 | else if (NETCONN1_P (p)) | |
63136da6 | 1365 | { |
e690ca94 KS |
1366 | /* For a local socket, there is no host name, |
1367 | so display service instead. */ | |
1368 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1369 | if (!STRINGP (host)) | |
1370 | { | |
1371 | host = Fplist_get (p->childp, QCservice); | |
1372 | if (INTEGERP (host)) | |
1373 | host = Fnumber_to_string (host); | |
1374 | } | |
991234f0 | 1375 | if (NILP (host)) |
0dccee41 | 1376 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1377 | sprintf (tembuf, "(network %s connection to %s)\n", |
60f0fb11 | 1378 | (DATAGRAM_CHAN_P (p->infd) ? "datagram" : "stream"), |
991234f0 | 1379 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 | 1380 | insert_string (tembuf); |
63136da6 | 1381 | } |
d888760c GM |
1382 | else if (SERIALCONN1_P (p)) |
1383 | { | |
1384 | Lisp_Object port = Fplist_get (p->childp, QCport); | |
1385 | Lisp_Object speed = Fplist_get (p->childp, QCspeed); | |
1386 | insert_string ("(serial port "); | |
1387 | if (STRINGP (port)) | |
1388 | insert_string (SDATA (port)); | |
1389 | else | |
1390 | insert_string ("?"); | |
1391 | if (INTEGERP (speed)) | |
1392 | { | |
fa24b114 | 1393 | sprintf (tembuf, " at %ld b/s", (long) XINT (speed)); |
d888760c GM |
1394 | insert_string (tembuf); |
1395 | } | |
1396 | insert_string (")\n"); | |
1397 | } | |
177c0ea7 | 1398 | else |
d0d6b7c5 JB |
1399 | { |
1400 | tem = p->command; | |
1401 | while (1) | |
1402 | { | |
1403 | tem1 = Fcar (tem); | |
850d0752 NR |
1404 | if (NILP (tem1)) |
1405 | break; | |
d0d6b7c5 JB |
1406 | Finsert (1, &tem1); |
1407 | tem = Fcdr (tem); | |
1408 | if (NILP (tem)) | |
1409 | break; | |
1410 | insert_string (" "); | |
1411 | } | |
1412 | insert_string ("\n"); | |
1413 | } | |
1414 | } | |
1eed3bdc | 1415 | if (exited) |
e42bdf01 CY |
1416 | { |
1417 | status_notify (NULL); | |
1418 | redisplay_preserve_echo_area (13); | |
1419 | } | |
d0d6b7c5 JB |
1420 | return Qnil; |
1421 | } | |
1422 | ||
e690ca94 | 1423 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1424 | doc: /* Display a list of all processes. |
e690ca94 KS |
1425 | If optional argument QUERY-ONLY is non-nil, only processes with |
1426 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1427 | Any process listed as exited or signaled is actually eliminated |
1428 | after the listing is made. */) | |
5842a27b | 1429 | (Lisp_Object query_only) |
d0d6b7c5 JB |
1430 | { |
1431 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1432 | list_processes_1, query_only); |
d0d6b7c5 JB |
1433 | return Qnil; |
1434 | } | |
1435 | ||
1436 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 | 1437 | doc: /* Return a list of all processes. */) |
5842a27b | 1438 | (void) |
d0d6b7c5 JB |
1439 | { |
1440 | return Fmapcar (Qcdr, Vprocess_alist); | |
1441 | } | |
1442 | \f | |
b0310da4 JB |
1443 | /* Starting asynchronous inferior processes. */ |
1444 | ||
d3da34e0 | 1445 | static Lisp_Object start_process_unwind (Lisp_Object proc); |
b0310da4 | 1446 | |
d0d6b7c5 | 1447 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1448 | doc: /* Start a program in a subprocess. Return the process object for it. |
1449 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1450 | BUFFER is the buffer (or buffer name) to associate with the process. |
4b6c5eee EZ |
1451 | |
1452 | Process output (both standard output and standard error streams) goes | |
1453 | at end of BUFFER, unless you specify an output stream or filter | |
1454 | function to handle the output. BUFFER may also be nil, meaning that | |
16fdeb17 RS |
1455 | this process is not associated with any buffer. |
1456 | ||
850d0752 NR |
1457 | PROGRAM is the program file name. It is searched for in PATH. If |
1458 | nil, just associate a pty with the buffer. Remaining arguments are | |
1459 | strings to give program as arguments. | |
320aebc9 | 1460 | |
4b6c5eee EZ |
1461 | If you want to separate standard output from standard error, invoke |
1462 | the command through a shell and redirect one of them using the shell | |
1463 | syntax. | |
320aebc9 | 1464 | |
3ecdf100 | 1465 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
5842a27b | 1466 | (int nargs, register Lisp_Object *args) |
d0d6b7c5 | 1467 | { |
1e30af70 | 1468 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 | 1469 | register unsigned char **new_argv; |
d0d6b7c5 | 1470 | register int i; |
aed13378 | 1471 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1472 | |
1473 | buffer = args[1]; | |
1474 | if (!NILP (buffer)) | |
1475 | buffer = Fget_buffer_create (buffer); | |
1476 | ||
1e30af70 JB |
1477 | /* Make sure that the child will be able to chdir to the current |
1478 | buffer's current directory, or its unhandled equivalent. We | |
1479 | can't just have the child check for an error when it does the | |
1480 | chdir, since it's in a vfork. | |
1481 | ||
1482 | We have to GCPRO around this because Fexpand_file_name and | |
1483 | Funhandled_file_name_directory might call a file name handling | |
1484 | function. The argument list is protected by the caller, so all | |
1485 | we really have to worry about is buffer. */ | |
1486 | { | |
1487 | struct gcpro gcpro1, gcpro2; | |
1488 | ||
1489 | current_dir = current_buffer->directory; | |
1490 | ||
1491 | GCPRO2 (buffer, current_dir); | |
1492 | ||
ca319910 SM |
1493 | current_dir = Funhandled_file_name_directory (current_dir); |
1494 | if (NILP (current_dir)) | |
1495 | /* If the file name handler says that current_dir is unreachable, use | |
1496 | a sensible default. */ | |
1497 | current_dir = build_string ("~/"); | |
1498 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
1e30af70 JB |
1499 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1500 | report_file_error ("Setting current directory", | |
1501 | Fcons (current_buffer->directory, Qnil)); | |
1502 | ||
1503 | UNGCPRO; | |
1504 | } | |
1505 | ||
d0d6b7c5 | 1506 | name = args[0]; |
b7826503 | 1507 | CHECK_STRING (name); |
d0d6b7c5 JB |
1508 | |
1509 | program = args[2]; | |
1510 | ||
850d0752 NR |
1511 | if (!NILP (program)) |
1512 | CHECK_STRING (program); | |
d0d6b7c5 | 1513 | |
d0d6b7c5 | 1514 | proc = make_process (name); |
b0310da4 JB |
1515 | /* If an error occurs and we can't start the process, we want to |
1516 | remove it from the process list. This means that each error | |
1517 | check in create_process doesn't need to call remove_process | |
1518 | itself; it's all taken care of here. */ | |
1519 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1520 | |
1521 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1522 | XPROCESS (proc)->plist = Qnil; |
d888760c | 1523 | XPROCESS (proc)->type = Qreal; |
d0d6b7c5 JB |
1524 | XPROCESS (proc)->buffer = buffer; |
1525 | XPROCESS (proc)->sentinel = Qnil; | |
1526 | XPROCESS (proc)->filter = Qnil; | |
1527 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); | |
1528 | ||
6b61353c | 1529 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 SM |
1530 | XPROCESS (proc)->adaptive_read_buffering |
1531 | = (NILP (Vprocess_adaptive_read_buffering) ? 0 | |
1532 | : EQ (Vprocess_adaptive_read_buffering, Qt) ? 1 : 2); | |
6b61353c KH |
1533 | #endif |
1534 | ||
7af71e17 | 1535 | /* Make the process marker point into the process buffer (if any). */ |
f523e0c3 | 1536 | if (BUFFERP (buffer)) |
d8a2934e RS |
1537 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1538 | BUF_ZV (XBUFFER (buffer)), | |
1539 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1540 | |
67918941 | 1541 | { |
d5d4ae71 KH |
1542 | /* Decide coding systems for communicating with the process. Here |
1543 | we don't setup the structure coding_system nor pay attention to | |
1544 | unibyte mode. They are done in create_process. */ | |
1545 | ||
67918941 RS |
1546 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1547 | Lisp_Object coding_systems = Qt; | |
1548 | Lisp_Object val, *args2; | |
a4a37e65 | 1549 | struct gcpro gcpro1, gcpro2; |
67918941 | 1550 | |
d5d4ae71 KH |
1551 | val = Vcoding_system_for_read; |
1552 | if (NILP (val)) | |
67918941 RS |
1553 | { |
1554 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1555 | args2[0] = Qstart_process; | |
1556 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1557 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1558 | if (!NILP (program)) |
1559 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1560 | UNGCPRO; |
1561 | if (CONSP (coding_systems)) | |
70949dac | 1562 | val = XCAR (coding_systems); |
67918941 | 1563 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1564 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1565 | } |
1566 | XPROCESS (proc)->decode_coding_system = val; | |
1567 | ||
d5d4ae71 KH |
1568 | val = Vcoding_system_for_write; |
1569 | if (NILP (val)) | |
67918941 RS |
1570 | { |
1571 | if (EQ (coding_systems, Qt)) | |
1572 | { | |
1573 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1574 | args2[0] = Qstart_process; | |
1575 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1576 | GCPRO2 (proc, current_dir); |
850d0752 NR |
1577 | if (!NILP (program)) |
1578 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
67918941 RS |
1579 | UNGCPRO; |
1580 | } | |
1581 | if (CONSP (coding_systems)) | |
70949dac | 1582 | val = XCDR (coding_systems); |
67918941 | 1583 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1584 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1585 | } |
1586 | XPROCESS (proc)->encode_coding_system = val; | |
1587 | } | |
0fa1789e | 1588 | |
a4a37e65 | 1589 | |
850d0752 NR |
1590 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
1591 | XPROCESS (proc)->decoding_carryover = 0; | |
1592 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); | |
ed30cf85 | 1593 | |
850d0752 NR |
1594 | XPROCESS (proc)->inherit_coding_system_flag |
1595 | = !(NILP (buffer) || !inherit_process_coding_system); | |
77bf07e1 | 1596 | |
850d0752 NR |
1597 | if (!NILP (program)) |
1598 | { | |
1599 | /* If program file name is not absolute, search our path for it. | |
1600 | Put the name we will really use in TEM. */ | |
1601 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) | |
1602 | && !(SCHARS (program) > 1 | |
1603 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
1604 | { | |
1605 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1606 | ||
1607 | tem = Qnil; | |
1608 | GCPRO4 (name, program, buffer, current_dir); | |
1609 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); | |
1610 | UNGCPRO; | |
1611 | if (NILP (tem)) | |
1612 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1613 | tem = Fexpand_file_name (tem, Qnil); | |
1614 | } | |
1615 | else | |
1616 | { | |
1617 | if (!NILP (Ffile_directory_p (program))) | |
1618 | error ("Specified program for new process is a directory"); | |
1619 | tem = program; | |
1620 | } | |
ed30cf85 | 1621 | |
850d0752 NR |
1622 | /* If program file name starts with /: for quoting a magic name, |
1623 | discard that. */ | |
1624 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1625 | && SREF (tem, 1) == ':') | |
1626 | tem = Fsubstring (tem, make_number (2), Qnil); | |
77bf07e1 | 1627 | |
77bf07e1 | 1628 | { |
850d0752 NR |
1629 | struct gcpro gcpro1; |
1630 | GCPRO1 (tem); | |
a4a37e65 | 1631 | |
850d0752 NR |
1632 | /* Encode the file name and put it in NEW_ARGV. |
1633 | That's where the child will use it to execute the program. */ | |
1634 | tem = Fcons (ENCODE_FILE (tem), Qnil); | |
77bf07e1 | 1635 | |
850d0752 NR |
1636 | /* Here we encode arguments by the coding system used for sending |
1637 | data to the process. We don't support using different coding | |
1638 | systems for encoding arguments and for encoding data sent to the | |
1639 | process. */ | |
77bf07e1 | 1640 | |
850d0752 NR |
1641 | for (i = 3; i < nargs; i++) |
1642 | { | |
1643 | tem = Fcons (args[i], tem); | |
1644 | CHECK_STRING (XCAR (tem)); | |
1645 | if (STRING_MULTIBYTE (XCAR (tem))) | |
1646 | XSETCAR (tem, | |
1647 | code_convert_string_norecord | |
1648 | (XCAR (tem), XPROCESS (proc)->encode_coding_system, 1)); | |
1649 | } | |
a4a37e65 | 1650 | |
850d0752 NR |
1651 | UNGCPRO; |
1652 | } | |
0fa1789e | 1653 | |
850d0752 NR |
1654 | /* Now that everything is encoded we can collect the strings into |
1655 | NEW_ARGV. */ | |
1656 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1657 | new_argv[nargs - 2] = 0; | |
52a1b894 | 1658 | |
850d0752 NR |
1659 | for (i = nargs - 3; i >= 0; i--) |
1660 | { | |
1661 | new_argv[i] = SDATA (XCAR (tem)); | |
1662 | tem = XCDR (tem); | |
1663 | } | |
1664 | ||
1665 | create_process (proc, (char **) new_argv, current_dir); | |
1666 | } | |
1667 | else | |
1668 | create_pty (proc); | |
d0d6b7c5 | 1669 | |
b0310da4 | 1670 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1671 | } |
1672 | ||
b0310da4 | 1673 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1674 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1675 | an error and the process wasn't started successfully, so we should |
1676 | remove it from the process list. */ | |
1677 | static Lisp_Object | |
d3da34e0 | 1678 | start_process_unwind (Lisp_Object proc) |
b0310da4 | 1679 | { |
bcd69aea | 1680 | if (!PROCESSP (proc)) |
b0310da4 JB |
1681 | abort (); |
1682 | ||
1683 | /* Was PROC started successfully? */ | |
850d0752 | 1684 | if (XPROCESS (proc)->pid == -1) |
b0310da4 JB |
1685 | remove_process (proc); |
1686 | ||
1687 | return Qnil; | |
1688 | } | |
1689 | ||
ff6daed3 | 1690 | static void |
d3da34e0 | 1691 | create_process_1 (struct atimer *timer) |
d0d6b7c5 | 1692 | { |
30904ab7 | 1693 | /* Nothing to do. */ |
d0d6b7c5 JB |
1694 | } |
1695 | ||
30904ab7 | 1696 | |
6b53bb85 | 1697 | void |
d3da34e0 | 1698 | create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir) |
d0d6b7c5 | 1699 | { |
29ed4d51 CY |
1700 | int inchannel, outchannel; |
1701 | pid_t pid; | |
d0d6b7c5 | 1702 | int sv[2]; |
2c4df143 YM |
1703 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1704 | int wait_child_setup[2]; | |
1705 | #endif | |
0dc70c33 KH |
1706 | sigset_t procmask; |
1707 | sigset_t blocked; | |
1708 | struct sigaction sigint_action; | |
1709 | struct sigaction sigquit_action; | |
1710 | #ifdef AIX | |
1711 | struct sigaction sighup_action; | |
1712 | #endif | |
ecd1f654 KH |
1713 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1714 | volatile int forkin, forkout; | |
1715 | volatile int pty_flag = 0; | |
3ec68006 | 1716 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1717 | extern char **environ; |
3ec68006 | 1718 | #endif |
d0d6b7c5 | 1719 | |
d0d6b7c5 JB |
1720 | inchannel = outchannel = -1; |
1721 | ||
1722 | #ifdef HAVE_PTYS | |
fe45da4e | 1723 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1724 | outchannel = inchannel = allocate_pty (); |
1725 | ||
d0d6b7c5 JB |
1726 | if (inchannel >= 0) |
1727 | { | |
2af70a0c RS |
1728 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1729 | /* On most USG systems it does not work to open the pty's tty here, | |
1730 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1731 | #ifdef O_NOCTTY |
1732 | /* Don't let this terminal become our controlling terminal | |
1733 | (in case we don't have one). */ | |
68c45bf0 | 1734 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1735 | #else |
68c45bf0 | 1736 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1737 | #endif |
1738 | if (forkin < 0) | |
1739 | report_file_error ("Opening pty", Qnil); | |
1740 | #else | |
1741 | forkin = forkout = -1; | |
2af70a0c | 1742 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1743 | pty_flag = 1; |
1744 | } | |
1745 | else | |
1746 | #endif /* HAVE_PTYS */ | |
d0d6b7c5 | 1747 | { |
fc14013c KH |
1748 | int tem; |
1749 | tem = pipe (sv); | |
1750 | if (tem < 0) | |
1751 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1752 | inchannel = sv[0]; |
1753 | forkout = sv[1]; | |
fc14013c KH |
1754 | tem = pipe (sv); |
1755 | if (tem < 0) | |
1756 | { | |
68c45bf0 PE |
1757 | emacs_close (inchannel); |
1758 | emacs_close (forkout); | |
fc14013c KH |
1759 | report_file_error ("Creating pipe", Qnil); |
1760 | } | |
d0d6b7c5 JB |
1761 | outchannel = sv[1]; |
1762 | forkin = sv[0]; | |
1763 | } | |
d0d6b7c5 | 1764 | |
2c4df143 YM |
1765 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) |
1766 | { | |
1767 | int tem; | |
1768 | ||
1769 | tem = pipe (wait_child_setup); | |
1770 | if (tem < 0) | |
1771 | report_file_error ("Creating pipe", Qnil); | |
1772 | tem = fcntl (wait_child_setup[1], F_GETFD, 0); | |
1773 | if (tem >= 0) | |
1774 | tem = fcntl (wait_child_setup[1], F_SETFD, tem | FD_CLOEXEC); | |
1775 | if (tem < 0) | |
1776 | { | |
1777 | emacs_close (wait_child_setup[0]); | |
1778 | emacs_close (wait_child_setup[1]); | |
1779 | report_file_error ("Setting file descriptor flags", Qnil); | |
1780 | } | |
1781 | } | |
1782 | #endif | |
1783 | ||
d0d6b7c5 JB |
1784 | #if 0 |
1785 | /* Replaced by close_process_descs */ | |
1786 | set_exclusive_use (inchannel); | |
1787 | set_exclusive_use (outchannel); | |
1788 | #endif | |
1789 | ||
d0d6b7c5 JB |
1790 | #ifdef O_NONBLOCK |
1791 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1792 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1793 | #else |
1794 | #ifdef O_NDELAY | |
1795 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1796 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1797 | #endif |
1798 | #endif | |
1799 | ||
1800 | /* Record this as an active process, with its channels. | |
1801 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1802 | chan_process[inchannel] = process; | |
60f0fb11 SM |
1803 | XPROCESS (process)->infd = inchannel; |
1804 | XPROCESS (process)->outfd = outchannel; | |
16782258 JD |
1805 | |
1806 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1807 | It was only used for getting the foreground tty process, so now | |
1808 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1809 | more portable (see USG_SUBTTY_WORKS above). */ | |
1810 | ||
60f0fb11 | 1811 | XPROCESS (process)->pty_flag = pty_flag; |
d0d6b7c5 | 1812 | XPROCESS (process)->status = Qrun; |
03f04413 | 1813 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1814 | |
1815 | /* Delay interrupts until we have a chance to store | |
1816 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1817 | sigemptyset (&blocked); |
1818 | #ifdef SIGCHLD | |
1819 | sigaddset (&blocked, SIGCHLD); | |
1820 | #endif | |
351e611f | 1821 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1822 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1823 | this sets the parent's signal handlers as well as the child's. | |
1824 | So delay all interrupts whose handlers the child might munge, | |
1825 | and record the current handlers so they can be restored later. */ | |
1826 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1827 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1828 | #ifdef AIX | |
1829 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1830 | #endif | |
351e611f | 1831 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 | 1832 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
d0d6b7c5 | 1833 | |
3081bf8d | 1834 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1835 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1836 | if (inchannel > max_process_desc) |
1837 | max_process_desc = inchannel; | |
1838 | ||
d0d6b7c5 JB |
1839 | /* Until we store the proper pid, enable sigchld_handler |
1840 | to recognize an unknown pid as standing for this process. | |
1841 | It is very important not to let this `marker' value stay | |
1842 | in the table after this function has returned; if it does | |
1843 | it might cause call-process to hang and subsequent asynchronous | |
1844 | processes to get their return values scrambled. */ | |
6bfd98e7 | 1845 | XPROCESS (process)->pid = -1; |
d0d6b7c5 | 1846 | |
ececcbec | 1847 | BLOCK_INPUT; |
177c0ea7 | 1848 | |
d0d6b7c5 JB |
1849 | { |
1850 | /* child_setup must clobber environ on systems with true vfork. | |
1851 | Protect it from permanent change. */ | |
1852 | char **save_environ = environ; | |
1853 | ||
14dc6093 | 1854 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1855 | |
e98d950b | 1856 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1857 | pid = vfork (); |
1858 | if (pid == 0) | |
e98d950b | 1859 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1860 | { |
1861 | int xforkin = forkin; | |
1862 | int xforkout = forkout; | |
1863 | ||
1864 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1865 | but fails to handle all the cases. */ | |
1866 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1867 | sigsetmask (SIGEMPTYMASK); | |
1868 | #endif | |
1869 | ||
1870 | /* Make the pty be the controlling terminal of the process. */ | |
1871 | #ifdef HAVE_PTYS | |
1872 | /* First, disconnect its current controlling terminal. */ | |
1873 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1874 | /* We tried doing setsid only if pty_flag, but it caused |
1875 | process_set_signal to fail on SGI when using a pipe. */ | |
1876 | setsid (); | |
ce4c9c90 | 1877 | /* Make the pty's terminal the controlling terminal. */ |
ce8f5a9a | 1878 | if (pty_flag && xforkin >= 0) |
39e9ebcd | 1879 | { |
39e9ebcd RS |
1880 | #ifdef TIOCSCTTY |
1881 | /* We ignore the return value | |
1882 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1883 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1884 | #endif |
39e9ebcd | 1885 | } |
d0d6b7c5 | 1886 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1887 | #ifdef USG |
000ab717 | 1888 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1889 | afterwards. Otherwise, we lose our controlling tty which |
1890 | is set when we open the pty. */ | |
1891 | setpgrp (); | |
1892 | #endif /* USG */ | |
1893 | #endif /* not HAVE_SETSID */ | |
a7ebc409 | 1894 | #if defined (LDISC1) |
9bcf8ec6 KH |
1895 | if (pty_flag && xforkin >= 0) |
1896 | { | |
1897 | struct termios t; | |
1898 | tcgetattr (xforkin, &t); | |
1899 | t.c_lflag = LDISC1; | |
1900 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 1901 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
1902 | } |
1903 | #else | |
aafadd9f | 1904 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 1905 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
1906 | { |
1907 | /* Use new line discipline. */ | |
1908 | int ldisc = NTTYDISC; | |
4458f555 | 1909 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 1910 | } |
000ab717 | 1911 | #endif |
9bcf8ec6 | 1912 | #endif |
177c0ea7 | 1913 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
1914 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
1915 | can do TIOCSPGRP only to the process's controlling tty. */ | |
1916 | if (pty_flag) | |
1917 | { | |
177c0ea7 | 1918 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 1919 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 1920 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
ce8f5a9a AS |
1921 | if (j >= 0) |
1922 | { | |
1923 | ioctl (j, TIOCNOTTY, 0); | |
1924 | emacs_close (j); | |
1925 | } | |
5a570e37 | 1926 | #ifndef USG |
d0d6b7c5 JB |
1927 | /* In order to get a controlling terminal on some versions |
1928 | of BSD, it is necessary to put the process in pgrp 0 | |
1929 | before it opens the terminal. */ | |
99c1aeca | 1930 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
1931 | setpgid (0, 0); |
1932 | #else | |
d0d6b7c5 | 1933 | setpgrp (0, 0); |
3ea1d291 | 1934 | #endif |
d0d6b7c5 JB |
1935 | #endif |
1936 | } | |
1937 | #endif /* TIOCNOTTY */ | |
1938 | ||
e39a993c | 1939 | #if !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 1940 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
1941 | conditional on TIOCSPGRP, |
1942 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
1943 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
1944 | that system does seem to need this code, even though | |
1945 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
1946 | /* Now close the pty (if we had it open) and reopen it. |
1947 | This makes the pty the controlling terminal of the subprocess. */ | |
1948 | if (pty_flag) | |
1949 | { | |
99e3d726 | 1950 | |
68c45bf0 PE |
1951 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
1952 | would work? */ | |
d0d6b7c5 | 1953 | if (xforkin >= 0) |
68c45bf0 PE |
1954 | emacs_close (xforkin); |
1955 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 1956 | |
4aa54ba8 RS |
1957 | if (xforkin < 0) |
1958 | { | |
68c45bf0 PE |
1959 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
1960 | emacs_write (1, pty_name, strlen (pty_name)); | |
1961 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
1962 | _exit (1); |
1963 | } | |
1964 | ||
d0d6b7c5 | 1965 | } |
e39a993c | 1966 | #endif /* not DONT_REOPEN_PTY */ |
e9bf058b | 1967 | |
d0d6b7c5 | 1968 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
1969 | if (pty_flag) |
1970 | { | |
1971 | SETUP_SLAVE_PTY; | |
1972 | } | |
d0d6b7c5 JB |
1973 | #endif /* SETUP_SLAVE_PTY */ |
1974 | #ifdef AIX | |
1975 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
1976 | Now reenable it in the child, so it will die when we want it to. */ | |
1977 | if (pty_flag) | |
1978 | signal (SIGHUP, SIG_DFL); | |
1979 | #endif | |
1980 | #endif /* HAVE_PTYS */ | |
1981 | ||
0dc70c33 KH |
1982 | signal (SIGINT, SIG_DFL); |
1983 | signal (SIGQUIT, SIG_DFL); | |
1984 | ||
1985 | /* Stop blocking signals in the child. */ | |
0dc70c33 | 1986 | sigprocmask (SIG_SETMASK, &procmask, 0); |
5e7e1da2 | 1987 | |
ab01d0a8 RS |
1988 | if (pty_flag) |
1989 | child_setup_tty (xforkout); | |
e98d950b RS |
1990 | #ifdef WINDOWSNT |
1991 | pid = child_setup (xforkin, xforkout, xforkout, | |
1992 | new_argv, 1, current_dir); | |
177c0ea7 | 1993 | #else /* not WINDOWSNT */ |
2c4df143 YM |
1994 | #ifdef FD_CLOEXEC |
1995 | emacs_close (wait_child_setup[0]); | |
1996 | #endif | |
d0d6b7c5 | 1997 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 1998 | new_argv, 1, current_dir); |
e98d950b | 1999 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2000 | } |
2001 | environ = save_environ; | |
2002 | } | |
2003 | ||
ececcbec RS |
2004 | UNBLOCK_INPUT; |
2005 | ||
4a127b3b | 2006 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2007 | if (pid < 0) |
6311cf58 RS |
2008 | { |
2009 | if (forkin >= 0) | |
68c45bf0 | 2010 | emacs_close (forkin); |
6311cf58 | 2011 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2012 | emacs_close (forkout); |
6311cf58 | 2013 | } |
4a127b3b KH |
2014 | else |
2015 | { | |
2016 | /* vfork succeeded. */ | |
6bfd98e7 | 2017 | XPROCESS (process)->pid = pid; |
d0d6b7c5 | 2018 | |
e98d950b | 2019 | #ifdef WINDOWSNT |
4a127b3b | 2020 | register_child (pid, inchannel); |
e98d950b RS |
2021 | #endif /* WINDOWSNT */ |
2022 | ||
4a127b3b KH |
2023 | /* If the subfork execv fails, and it exits, |
2024 | this close hangs. I don't know why. | |
2025 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2026 | { |
2027 | struct atimer *timer; | |
2028 | EMACS_TIME offset; | |
177c0ea7 | 2029 | |
30904ab7 GM |
2030 | stop_polling (); |
2031 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2032 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2033 | |
30904ab7 GM |
2034 | if (forkin >= 0) |
2035 | emacs_close (forkin); | |
2036 | ||
2037 | cancel_atimer (timer); | |
2038 | start_polling (); | |
2039 | } | |
177c0ea7 | 2040 | |
4a127b3b | 2041 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2042 | emacs_close (forkout); |
d0d6b7c5 | 2043 | |
875e6b94 | 2044 | #ifdef HAVE_PTYS |
4a127b3b KH |
2045 | if (pty_flag) |
2046 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2047 | else | |
875e6b94 | 2048 | #endif |
4a127b3b | 2049 | XPROCESS (process)->tty_name = Qnil; |
2c4df143 YM |
2050 | |
2051 | #if !defined (WINDOWSNT) && defined (FD_CLOEXEC) | |
2052 | /* Wait for child_setup to complete in case that vfork is | |
2053 | actually defined as fork. The descriptor wait_child_setup[1] | |
2054 | of a pipe is closed at the child side either by close-on-exec | |
2055 | on successful execvp or the _exit call in child_setup. */ | |
2056 | { | |
2057 | char dummy; | |
2058 | ||
2059 | emacs_close (wait_child_setup[1]); | |
2060 | emacs_read (wait_child_setup[0], &dummy, 1); | |
2061 | emacs_close (wait_child_setup[0]); | |
2062 | } | |
2063 | #endif | |
4a127b3b | 2064 | } |
3b9a3dfa | 2065 | |
4a127b3b KH |
2066 | /* Restore the signal state whether vfork succeeded or not. |
2067 | (We will signal an error, below, if it failed.) */ | |
351e611f | 2068 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2069 | /* Restore the parent's signal handlers. */ |
2070 | sigaction (SIGINT, &sigint_action, 0); | |
2071 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2072 | #ifdef AIX | |
2073 | sigaction (SIGHUP, &sighup_action, 0); | |
2074 | #endif | |
351e611f | 2075 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2076 | /* Stop blocking signals in the parent. */ |
2077 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
4a127b3b KH |
2078 | |
2079 | /* Now generate the error if vfork failed. */ | |
2080 | if (pid < 0) | |
2081 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 | 2082 | } |
d0d6b7c5 | 2083 | |
850d0752 | 2084 | void |
d3da34e0 | 2085 | create_pty (Lisp_Object process) |
850d0752 NR |
2086 | { |
2087 | int inchannel, outchannel; | |
2088 | ||
2089 | /* Use volatile to protect variables from being clobbered by longjmp. */ | |
2090 | volatile int forkin, forkout; | |
2091 | volatile int pty_flag = 0; | |
2092 | ||
2093 | inchannel = outchannel = -1; | |
2094 | ||
2095 | #ifdef HAVE_PTYS | |
2096 | if (!NILP (Vprocess_connection_type)) | |
2097 | outchannel = inchannel = allocate_pty (); | |
2098 | ||
2099 | if (inchannel >= 0) | |
2100 | { | |
2101 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) | |
2102 | /* On most USG systems it does not work to open the pty's tty here, | |
2103 | then close it and reopen it in the child. */ | |
2104 | #ifdef O_NOCTTY | |
2105 | /* Don't let this terminal become our controlling terminal | |
2106 | (in case we don't have one). */ | |
2107 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); | |
2108 | #else | |
2109 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); | |
2110 | #endif | |
2111 | if (forkin < 0) | |
2112 | report_file_error ("Opening pty", Qnil); | |
019d2c4c | 2113 | #if defined (DONT_REOPEN_PTY) |
850d0752 NR |
2114 | /* In the case that vfork is defined as fork, the parent process |
2115 | (Emacs) may send some data before the child process completes | |
2116 | tty options setup. So we setup tty before forking. */ | |
2117 | child_setup_tty (forkout); | |
019d2c4c | 2118 | #endif /* DONT_REOPEN_PTY */ |
850d0752 NR |
2119 | #else |
2120 | forkin = forkout = -1; | |
2121 | #endif /* not USG, or USG_SUBTTY_WORKS */ | |
2122 | pty_flag = 1; | |
2123 | } | |
2124 | #endif /* HAVE_PTYS */ | |
2125 | ||
2126 | #ifdef O_NONBLOCK | |
2127 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
2128 | fcntl (outchannel, F_SETFL, O_NONBLOCK); | |
2129 | #else | |
2130 | #ifdef O_NDELAY | |
2131 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
2132 | fcntl (outchannel, F_SETFL, O_NDELAY); | |
2133 | #endif | |
2134 | #endif | |
2135 | ||
2136 | /* Record this as an active process, with its channels. | |
2137 | As a result, child_setup will close Emacs's side of the pipes. */ | |
2138 | chan_process[inchannel] = process; | |
2139 | XPROCESS (process)->infd = inchannel; | |
2140 | XPROCESS (process)->outfd = outchannel; | |
2141 | ||
2142 | /* Previously we recorded the tty descriptor used in the subprocess. | |
2143 | It was only used for getting the foreground tty process, so now | |
2144 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
2145 | more portable (see USG_SUBTTY_WORKS above). */ | |
2146 | ||
2147 | XPROCESS (process)->pty_flag = pty_flag; | |
2148 | XPROCESS (process)->status = Qrun; | |
2149 | setup_process_coding_systems (process); | |
2150 | ||
2151 | FD_SET (inchannel, &input_wait_mask); | |
2152 | FD_SET (inchannel, &non_keyboard_wait_mask); | |
2153 | if (inchannel > max_process_desc) | |
2154 | max_process_desc = inchannel; | |
2155 | ||
2156 | XPROCESS (process)->pid = -2; | |
8b9fc636 EZ |
2157 | #ifdef HAVE_PTYS |
2158 | if (pty_flag) | |
2159 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2160 | else | |
2161 | #endif | |
2162 | XPROCESS (process)->tty_name = Qnil; | |
850d0752 NR |
2163 | } |
2164 | ||
e690ca94 | 2165 | \f |
e690ca94 KS |
2166 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2167 | The address family of sa is not included in the result. */ | |
2168 | ||
2169 | static Lisp_Object | |
d3da34e0 | 2170 | conv_sockaddr_to_lisp (struct sockaddr *sa, int len) |
e690ca94 KS |
2171 | { |
2172 | Lisp_Object address; | |
2173 | int i; | |
2174 | unsigned char *cp; | |
2175 | register struct Lisp_Vector *p; | |
2176 | ||
63136da6 AS |
2177 | /* Workaround for a bug in getsockname on BSD: Names bound to |
2178 | sockets in the UNIX domain are inaccessible; getsockname returns | |
2179 | a zero length name. */ | |
89887d67 | 2180 | if (len < offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family)) |
fff4e459 | 2181 | return empty_unibyte_string; |
63136da6 | 2182 | |
e690ca94 KS |
2183 | switch (sa->sa_family) |
2184 | { | |
2185 | case AF_INET: | |
2186 | { | |
2187 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2188 | len = sizeof (sin->sin_addr) + 1; | |
2189 | address = Fmake_vector (make_number (len), Qnil); | |
2190 | p = XVECTOR (address); | |
2191 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
63136da6 | 2192 | cp = (unsigned char *) &sin->sin_addr; |
e690ca94 KS |
2193 | break; |
2194 | } | |
e1652a86 KS |
2195 | #ifdef AF_INET6 |
2196 | case AF_INET6: | |
2197 | { | |
2198 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
63136da6 | 2199 | uint16_t *ip6 = (uint16_t *) &sin6->sin6_addr; |
e1652a86 KS |
2200 | len = sizeof (sin6->sin6_addr)/2 + 1; |
2201 | address = Fmake_vector (make_number (len), Qnil); | |
2202 | p = XVECTOR (address); | |
2203 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2204 | for (i = 0; i < len; i++) | |
2205 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2206 | return address; | |
2207 | } | |
2208 | #endif | |
e690ca94 KS |
2209 | #ifdef HAVE_LOCAL_SOCKETS |
2210 | case AF_LOCAL: | |
2211 | { | |
fb23673a EZ |
2212 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2213 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2214 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2215 | break; |
fb23673a | 2216 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2217 | } |
2218 | #endif | |
2219 | default: | |
89887d67 | 2220 | len -= offsetof (struct sockaddr, sa_family) + sizeof (sa->sa_family); |
e690ca94 KS |
2221 | address = Fcons (make_number (sa->sa_family), |
2222 | Fmake_vector (make_number (len), Qnil)); | |
2223 | p = XVECTOR (XCDR (address)); | |
63136da6 | 2224 | cp = (unsigned char *) &sa->sa_family + sizeof (sa->sa_family); |
e690ca94 KS |
2225 | break; |
2226 | } | |
2227 | ||
2228 | i = 0; | |
2229 | while (i < len) | |
2230 | p->contents[i++] = make_number (*cp++); | |
2231 | ||
2232 | return address; | |
2233 | } | |
2234 | ||
2235 | ||
2236 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2237 | ||
2238 | static int | |
d3da34e0 | 2239 | get_lisp_to_sockaddr_size (Lisp_Object address, int *familyp) |
e690ca94 KS |
2240 | { |
2241 | register struct Lisp_Vector *p; | |
2242 | ||
2243 | if (VECTORP (address)) | |
2244 | { | |
2245 | p = XVECTOR (address); | |
2246 | if (p->size == 5) | |
2247 | { | |
2248 | *familyp = AF_INET; | |
2249 | return sizeof (struct sockaddr_in); | |
2250 | } | |
e1652a86 KS |
2251 | #ifdef AF_INET6 |
2252 | else if (p->size == 9) | |
2253 | { | |
2254 | *familyp = AF_INET6; | |
2255 | return sizeof (struct sockaddr_in6); | |
2256 | } | |
2257 | #endif | |
e690ca94 KS |
2258 | } |
2259 | #ifdef HAVE_LOCAL_SOCKETS | |
2260 | else if (STRINGP (address)) | |
2261 | { | |
2262 | *familyp = AF_LOCAL; | |
2263 | return sizeof (struct sockaddr_un); | |
2264 | } | |
2265 | #endif | |
2266 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2267 | { | |
2268 | struct sockaddr *sa; | |
2269 | *familyp = XINT (XCAR (address)); | |
2270 | p = XVECTOR (XCDR (address)); | |
2271 | return p->size + sizeof (sa->sa_family); | |
2272 | } | |
2273 | return 0; | |
2274 | } | |
2275 | ||
2276 | /* Convert an address object (vector or string) to an internal sockaddr. | |
9d1a8e5d RS |
2277 | |
2278 | The address format has been basically validated by | |
2279 | get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid; | |
2280 | it could have come from user data. So if FAMILY is not valid, | |
2281 | we return after zeroing *SA. */ | |
e690ca94 KS |
2282 | |
2283 | static void | |
d3da34e0 | 2284 | conv_lisp_to_sockaddr (int family, Lisp_Object address, struct sockaddr *sa, int len) |
e690ca94 KS |
2285 | { |
2286 | register struct Lisp_Vector *p; | |
34967d0f | 2287 | register unsigned char *cp = NULL; |
e690ca94 KS |
2288 | register int i; |
2289 | ||
72af86bd | 2290 | memset (sa, 0, len); |
e690ca94 KS |
2291 | |
2292 | if (VECTORP (address)) | |
2293 | { | |
2294 | p = XVECTOR (address); | |
2295 | if (family == AF_INET) | |
2296 | { | |
2297 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2298 | len = sizeof (sin->sin_addr) + 1; | |
2299 | i = XINT (p->contents[--len]); | |
2300 | sin->sin_port = htons (i); | |
2301 | cp = (unsigned char *)&sin->sin_addr; | |
9d1a8e5d | 2302 | sa->sa_family = family; |
e690ca94 | 2303 | } |
e1652a86 KS |
2304 | #ifdef AF_INET6 |
2305 | else if (family == AF_INET6) | |
2306 | { | |
2307 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2308 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2309 | len = sizeof (sin6->sin6_addr) + 1; | |
2310 | i = XINT (p->contents[--len]); | |
2311 | sin6->sin6_port = htons (i); | |
2312 | for (i = 0; i < len; i++) | |
2313 | if (INTEGERP (p->contents[i])) | |
2314 | { | |
2315 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2316 | ip6[i] = ntohs (j); | |
2317 | } | |
9d1a8e5d | 2318 | sa->sa_family = family; |
0eb7675e | 2319 | return; |
e1652a86 KS |
2320 | } |
2321 | #endif | |
0eb7675e AS |
2322 | else |
2323 | return; | |
e690ca94 KS |
2324 | } |
2325 | else if (STRINGP (address)) | |
2326 | { | |
2327 | #ifdef HAVE_LOCAL_SOCKETS | |
2328 | if (family == AF_LOCAL) | |
2329 | { | |
fb23673a | 2330 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2331 | cp = SDATA (address); |
fb23673a EZ |
2332 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2333 | sockun->sun_path[i] = *cp++; | |
9d1a8e5d | 2334 | sa->sa_family = family; |
e690ca94 KS |
2335 | } |
2336 | #endif | |
2337 | return; | |
2338 | } | |
2339 | else | |
2340 | { | |
2341 | p = XVECTOR (XCDR (address)); | |
2342 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2343 | } | |
2344 | ||
2345 | for (i = 0; i < len; i++) | |
2346 | if (INTEGERP (p->contents[i])) | |
2347 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2348 | } | |
2349 | ||
2350 | #ifdef DATAGRAM_SOCKETS | |
2351 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2352 | 1, 1, 0, | |
2353 | doc: /* Get the current datagram address associated with PROCESS. */) | |
5842a27b | 2354 | (Lisp_Object process) |
e690ca94 KS |
2355 | { |
2356 | int channel; | |
2357 | ||
2358 | CHECK_PROCESS (process); | |
2359 | ||
2360 | if (!DATAGRAM_CONN_P (process)) | |
2361 | return Qnil; | |
2362 | ||
60f0fb11 | 2363 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2364 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2365 | datagram_address[channel].len); | |
2366 | } | |
2367 | ||
2368 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2369 | 2, 2, 0, | |
2370 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2371 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
5842a27b | 2372 | (Lisp_Object process, Lisp_Object address) |
e690ca94 KS |
2373 | { |
2374 | int channel; | |
2375 | int family, len; | |
2376 | ||
2377 | CHECK_PROCESS (process); | |
2378 | ||
2379 | if (!DATAGRAM_CONN_P (process)) | |
2380 | return Qnil; | |
2381 | ||
60f0fb11 | 2382 | channel = XPROCESS (process)->infd; |
e690ca94 KS |
2383 | |
2384 | len = get_lisp_to_sockaddr_size (address, &family); | |
2385 | if (datagram_address[channel].len != len) | |
2386 | return Qnil; | |
2387 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2388 | return address; | |
2389 | } | |
2390 | #endif | |
2391 | \f | |
2392 | ||
5e2327cf | 2393 | static const struct socket_options { |
e690ca94 | 2394 | /* The name of this option. Should be lowercase version of option |
177c0ea7 | 2395 | name without SO_ prefix. */ |
fce70521 | 2396 | const char *name; |
e690ca94 KS |
2397 | /* Option level SOL_... */ |
2398 | int optlevel; | |
2399 | /* Option number SO_... */ | |
2400 | int optnum; | |
6b61353c KH |
2401 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2402 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; | |
e690ca94 KS |
2403 | } socket_options[] = |
2404 | { | |
2405 | #ifdef SO_BINDTODEVICE | |
6b61353c | 2406 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2407 | #endif |
2408 | #ifdef SO_BROADCAST | |
6b61353c | 2409 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2410 | #endif |
2411 | #ifdef SO_DONTROUTE | |
6b61353c | 2412 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2413 | #endif |
2414 | #ifdef SO_KEEPALIVE | |
6b61353c | 2415 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2416 | #endif |
2417 | #ifdef SO_LINGER | |
6b61353c | 2418 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2419 | #endif |
2420 | #ifdef SO_OOBINLINE | |
6b61353c | 2421 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2422 | #endif |
2423 | #ifdef SO_PRIORITY | |
6b61353c | 2424 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2425 | #endif |
2426 | #ifdef SO_REUSEADDR | |
6b61353c | 2427 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2428 | #endif |
6b61353c | 2429 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2430 | }; |
2431 | ||
6b61353c | 2432 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2433 | |
6b61353c KH |
2434 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2435 | Signals an error if setting a known option fails. | |
2436 | */ | |
e690ca94 KS |
2437 | |
2438 | static int | |
d3da34e0 | 2439 | set_socket_option (int s, Lisp_Object opt, Lisp_Object val) |
e690ca94 | 2440 | { |
6b61353c | 2441 | char *name; |
5e2327cf | 2442 | const struct socket_options *sopt; |
6b61353c | 2443 | int ret = 0; |
e690ca94 | 2444 | |
6b61353c | 2445 | CHECK_SYMBOL (opt); |
e690ca94 | 2446 | |
6b61353c KH |
2447 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2448 | for (sopt = socket_options; sopt->name; sopt++) | |
2449 | if (strcmp (name, sopt->name) == 0) | |
2450 | break; | |
e690ca94 | 2451 | |
6b61353c KH |
2452 | switch (sopt->opttype) |
2453 | { | |
2454 | case SOPT_BOOL: | |
2455 | { | |
2456 | int optval; | |
2457 | optval = NILP (val) ? 0 : 1; | |
2458 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2459 | &optval, sizeof (optval)); | |
2460 | break; | |
2461 | } | |
e690ca94 | 2462 | |
6b61353c KH |
2463 | case SOPT_INT: |
2464 | { | |
2465 | int optval; | |
2466 | if (INTEGERP (val)) | |
2467 | optval = XINT (val); | |
2468 | else | |
2469 | error ("Bad option value for %s", name); | |
2470 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2471 | &optval, sizeof (optval)); | |
2472 | break; | |
2473 | } | |
e690ca94 | 2474 | |
6b61353c KH |
2475 | #ifdef SO_BINDTODEVICE |
2476 | case SOPT_IFNAME: | |
2477 | { | |
2478 | char devname[IFNAMSIZ+1]; | |
e690ca94 | 2479 | |
6b61353c KH |
2480 | /* This is broken, at least in the Linux 2.4 kernel. |
2481 | To unbind, the arg must be a zero integer, not the empty string. | |
2482 | This should work on all systems. KFS. 2003-09-23. */ | |
72af86bd | 2483 | memset (devname, 0, sizeof devname); |
6b61353c | 2484 | if (STRINGP (val)) |
e690ca94 | 2485 | { |
6b61353c KH |
2486 | char *arg = (char *) SDATA (val); |
2487 | int len = min (strlen (arg), IFNAMSIZ); | |
72af86bd | 2488 | memcpy (devname, arg, len); |
e690ca94 | 2489 | } |
6b61353c KH |
2490 | else if (!NILP (val)) |
2491 | error ("Bad option value for %s", name); | |
2492 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2493 | devname, IFNAMSIZ); | |
2494 | break; | |
2495 | } | |
2496 | #endif | |
e690ca94 | 2497 | |
177c0ea7 | 2498 | #ifdef SO_LINGER |
6b61353c KH |
2499 | case SOPT_LINGER: |
2500 | { | |
2501 | struct linger linger; | |
e690ca94 | 2502 | |
6b61353c KH |
2503 | linger.l_onoff = 1; |
2504 | linger.l_linger = 0; | |
2505 | if (INTEGERP (val)) | |
2506 | linger.l_linger = XINT (val); | |
2507 | else | |
2508 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2509 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2510 | &linger, sizeof (linger)); | |
2511 | break; | |
2512 | } | |
e690ca94 | 2513 | #endif |
6b61353c KH |
2514 | |
2515 | default: | |
2516 | return 0; | |
e690ca94 | 2517 | } |
6b61353c KH |
2518 | |
2519 | if (ret < 0) | |
2520 | report_file_error ("Cannot set network option", | |
2521 | Fcons (opt, Fcons (val, Qnil))); | |
2522 | return (1 << sopt->optbit); | |
e690ca94 KS |
2523 | } |
2524 | ||
6b61353c KH |
2525 | |
2526 | DEFUN ("set-network-process-option", | |
2527 | Fset_network_process_option, Sset_network_process_option, | |
2528 | 3, 4, 0, | |
2529 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2530 | See `make-network-process' for a list of options and values. | |
2531 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2532 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
5842a27b | 2533 | (Lisp_Object process, Lisp_Object option, Lisp_Object value, Lisp_Object no_error) |
e690ca94 | 2534 | { |
6b61353c KH |
2535 | int s; |
2536 | struct Lisp_Process *p; | |
e690ca94 | 2537 | |
e690ca94 | 2538 | CHECK_PROCESS (process); |
6b61353c KH |
2539 | p = XPROCESS (process); |
2540 | if (!NETCONN1_P (p)) | |
2541 | error ("Process is not a network process"); | |
2542 | ||
60f0fb11 | 2543 | s = p->infd; |
6b61353c KH |
2544 | if (s < 0) |
2545 | error ("Process is not running"); | |
2546 | ||
2547 | if (set_socket_option (s, option, value)) | |
e690ca94 | 2548 | { |
6b61353c KH |
2549 | p->childp = Fplist_put (p->childp, option, value); |
2550 | return Qt; | |
e690ca94 | 2551 | } |
6b61353c KH |
2552 | |
2553 | if (NILP (no_error)) | |
2554 | error ("Unknown or unsupported option"); | |
2555 | ||
2556 | return Qnil; | |
e690ca94 | 2557 | } |
6b61353c | 2558 | |
e690ca94 | 2559 | \f |
d888760c GM |
2560 | DEFUN ("serial-process-configure", |
2561 | Fserial_process_configure, | |
2562 | Sserial_process_configure, | |
2563 | 0, MANY, 0, | |
2564 | doc: /* Configure speed, bytesize, etc. of a serial process. | |
2565 | ||
2566 | Arguments are specified as keyword/argument pairs. Attributes that | |
2567 | are not given are re-initialized from the process's current | |
2568 | configuration (available via the function `process-contact') or set to | |
2569 | reasonable default values. The following arguments are defined: | |
2570 | ||
2571 | :process PROCESS | |
2572 | :name NAME | |
2573 | :buffer BUFFER | |
2574 | :port PORT | |
2575 | -- Any of these arguments can be given to identify the process that is | |
2576 | to be configured. If none of these arguments is given, the current | |
2577 | buffer's process is used. | |
2578 | ||
2579 | :speed SPEED -- SPEED is the speed of the serial port in bits per | |
2580 | second, also called baud rate. Any value can be given for SPEED, but | |
2581 | most serial ports work only at a few defined values between 1200 and | |
2582 | 115200, with 9600 being the most common value. If SPEED is nil, the | |
2583 | serial port is not configured any further, i.e., all other arguments | |
2584 | are ignored. This may be useful for special serial ports such as | |
2585 | Bluetooth-to-serial converters which can only be configured through AT | |
2586 | commands. A value of nil for SPEED can be used only when passed | |
2587 | through `make-serial-process' or `serial-term'. | |
2588 | ||
2589 | :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which | |
2590 | can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used. | |
2591 | ||
2592 | :parity PARITY -- PARITY can be nil (don't use parity), the symbol | |
2593 | `odd' (use odd parity), or the symbol `even' (use even parity). If | |
2594 | PARITY is not given, no parity is used. | |
2595 | ||
2596 | :stopbits STOPBITS -- STOPBITS is the number of stopbits used to | |
2597 | terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS | |
2598 | is not given or nil, 1 stopbit is used. | |
2599 | ||
2600 | :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of | |
2601 | flowcontrol to be used, which is either nil (don't use flowcontrol), | |
2602 | the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw' | |
2603 | \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no | |
2604 | flowcontrol is used. | |
2605 | ||
2606 | `serial-process-configure' is called by `make-serial-process' for the | |
2607 | initial configuration of the serial port. | |
2608 | ||
2609 | Examples: | |
2610 | ||
2611 | \(serial-process-configure :process "/dev/ttyS0" :speed 1200) | |
2612 | ||
2613 | \(serial-process-configure | |
2614 | :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw) | |
2615 | ||
2616 | \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7) | |
2617 | ||
2618 | usage: (serial-process-configure &rest ARGS) */) | |
5842a27b | 2619 | (int nargs, Lisp_Object *args) |
d888760c GM |
2620 | { |
2621 | struct Lisp_Process *p; | |
2622 | Lisp_Object contact = Qnil; | |
2623 | Lisp_Object proc = Qnil; | |
2624 | struct gcpro gcpro1; | |
2625 | ||
2626 | contact = Flist (nargs, args); | |
2627 | GCPRO1 (contact); | |
2628 | ||
2629 | proc = Fplist_get (contact, QCprocess); | |
2630 | if (NILP (proc)) | |
2631 | proc = Fplist_get (contact, QCname); | |
2632 | if (NILP (proc)) | |
2633 | proc = Fplist_get (contact, QCbuffer); | |
2634 | if (NILP (proc)) | |
2635 | proc = Fplist_get (contact, QCport); | |
2636 | proc = get_process (proc); | |
2637 | p = XPROCESS (proc); | |
a879ee6f | 2638 | if (!EQ (p->type, Qserial)) |
d888760c GM |
2639 | error ("Not a serial process"); |
2640 | ||
2641 | if (NILP (Fplist_get (p->childp, QCspeed))) | |
2642 | { | |
2643 | UNGCPRO; | |
2644 | return Qnil; | |
2645 | } | |
2646 | ||
2647 | serial_configure (p, contact); | |
2648 | ||
2649 | UNGCPRO; | |
2650 | return Qnil; | |
2651 | } | |
d888760c | 2652 | |
d888760c GM |
2653 | /* Used by make-serial-process to recover from errors. */ |
2654 | Lisp_Object make_serial_process_unwind (Lisp_Object proc) | |
2655 | { | |
2656 | if (!PROCESSP (proc)) | |
2657 | abort (); | |
2658 | remove_process (proc); | |
2659 | return Qnil; | |
2660 | } | |
d888760c | 2661 | |
d888760c GM |
2662 | DEFUN ("make-serial-process", Fmake_serial_process, Smake_serial_process, |
2663 | 0, MANY, 0, | |
2664 | doc: /* Create and return a serial port process. | |
2665 | ||
2666 | In Emacs, serial port connections are represented by process objects, | |
2667 | so input and output work as for subprocesses, and `delete-process' | |
2668 | closes a serial port connection. However, a serial process has no | |
2669 | process id, it cannot be signaled, and the status codes are different | |
2670 | from normal processes. | |
2671 | ||
2672 | `make-serial-process' creates a process and a buffer, on which you | |
2673 | probably want to use `process-send-string'. Try \\[serial-term] for | |
2674 | an interactive terminal. See below for examples. | |
2675 | ||
2676 | Arguments are specified as keyword/argument pairs. The following | |
2677 | arguments are defined: | |
2678 | ||
2679 | :port PORT -- (mandatory) PORT is the path or name of the serial port. | |
2680 | For example, this could be "/dev/ttyS0" on Unix. On Windows, this | |
2681 | could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double | |
2682 | the backslashes in strings). | |
2683 | ||
2684 | :speed SPEED -- (mandatory) is handled by `serial-process-configure', | |
2685 | which is called by `make-serial-process'. | |
2686 | ||
2687 | :name NAME -- NAME is the name of the process. If NAME is not given, | |
2688 | the value of PORT is used. | |
2689 | ||
2690 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2691 | with the process. Process output goes at the end of that buffer, | |
2692 | unless you specify an output stream or filter function to handle the | |
2693 | output. If BUFFER is not given, the value of NAME is used. | |
2694 | ||
2695 | :coding CODING -- If CODING is a symbol, it specifies the coding | |
2696 | system used for both reading and writing for this process. If CODING | |
2697 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2698 | ENCODING is used for writing. | |
2699 | ||
2700 | :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and | |
2701 | the process is running. If BOOL is not given, query before exiting. | |
2702 | ||
2703 | :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil. | |
2704 | In the stopped state, a serial process does not accept incoming data, | |
2705 | but you can send outgoing data. The stopped state is cleared by | |
2706 | `continue-process' and set by `stop-process'. | |
2707 | ||
2708 | :filter FILTER -- Install FILTER as the process filter. | |
2709 | ||
2710 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. | |
2711 | ||
2712 | :plist PLIST -- Install PLIST as the initial plist of the process. | |
2713 | ||
2714 | :speed | |
2715 | :bytesize | |
2716 | :parity | |
2717 | :stopbits | |
2718 | :flowcontrol | |
2719 | -- These arguments are handled by `serial-process-configure', which is | |
2720 | called by `make-serial-process'. | |
2721 | ||
2722 | The original argument list, possibly modified by later configuration, | |
2723 | is available via the function `process-contact'. | |
2724 | ||
2725 | Examples: | |
2726 | ||
2727 | \(make-serial-process :port "/dev/ttyS0" :speed 9600) | |
2728 | ||
2729 | \(make-serial-process :port "COM1" :speed 115200 :stopbits 2) | |
2730 | ||
2731 | \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd) | |
2732 | ||
2733 | \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil) | |
2734 | ||
2735 | usage: (make-serial-process &rest ARGS) */) | |
5842a27b | 2736 | (int nargs, Lisp_Object *args) |
d888760c GM |
2737 | { |
2738 | int fd = -1; | |
2739 | Lisp_Object proc, contact, port; | |
2740 | struct Lisp_Process *p; | |
2741 | struct gcpro gcpro1; | |
2742 | Lisp_Object name, buffer; | |
2743 | Lisp_Object tem, val; | |
2744 | int specpdl_count = -1; | |
2745 | ||
2746 | if (nargs == 0) | |
2747 | return Qnil; | |
2748 | ||
2749 | contact = Flist (nargs, args); | |
2750 | GCPRO1 (contact); | |
2751 | ||
2752 | port = Fplist_get (contact, QCport); | |
2753 | if (NILP (port)) | |
2754 | error ("No port specified"); | |
2755 | CHECK_STRING (port); | |
2756 | ||
2757 | if (NILP (Fplist_member (contact, QCspeed))) | |
2758 | error (":speed not specified"); | |
2759 | if (!NILP (Fplist_get (contact, QCspeed))) | |
2760 | CHECK_NUMBER (Fplist_get (contact, QCspeed)); | |
2761 | ||
2762 | name = Fplist_get (contact, QCname); | |
2763 | if (NILP (name)) | |
2764 | name = port; | |
2765 | CHECK_STRING (name); | |
2766 | proc = make_process (name); | |
2767 | specpdl_count = SPECPDL_INDEX (); | |
2768 | record_unwind_protect (make_serial_process_unwind, proc); | |
2769 | p = XPROCESS (proc); | |
2770 | ||
2771 | fd = serial_open ((char*) SDATA (port)); | |
2772 | p->infd = fd; | |
2773 | p->outfd = fd; | |
2774 | if (fd > max_process_desc) | |
2775 | max_process_desc = fd; | |
2776 | chan_process[fd] = proc; | |
2777 | ||
2778 | buffer = Fplist_get (contact, QCbuffer); | |
2779 | if (NILP (buffer)) | |
2780 | buffer = name; | |
2781 | buffer = Fget_buffer_create (buffer); | |
2782 | p->buffer = buffer; | |
2783 | ||
2784 | p->childp = contact; | |
2785 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); | |
2786 | p->type = Qserial; | |
2787 | p->sentinel = Fplist_get (contact, QCsentinel); | |
2788 | p->filter = Fplist_get (contact, QCfilter); | |
2789 | p->log = Qnil; | |
2790 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
2791 | p->kill_without_query = 1; | |
2792 | if (tem = Fplist_get (contact, QCstop), !NILP (tem)) | |
2793 | p->command = Qt; | |
2794 | p->pty_flag = 0; | |
2795 | ||
2796 | if (!EQ (p->command, Qt)) | |
2797 | { | |
2798 | FD_SET (fd, &input_wait_mask); | |
2799 | FD_SET (fd, &non_keyboard_wait_mask); | |
2800 | } | |
2801 | ||
2802 | if (BUFFERP (buffer)) | |
2803 | { | |
2804 | set_marker_both (p->mark, buffer, | |
2805 | BUF_ZV (XBUFFER (buffer)), | |
2806 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
2807 | } | |
2808 | ||
2809 | tem = Fplist_member (contact, QCcoding); | |
2810 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
2811 | tem = Qnil; | |
2812 | ||
2813 | val = Qnil; | |
2814 | if (!NILP (tem)) | |
2815 | { | |
2816 | val = XCAR (XCDR (tem)); | |
2817 | if (CONSP (val)) | |
2818 | val = XCAR (val); | |
2819 | } | |
2820 | else if (!NILP (Vcoding_system_for_read)) | |
2821 | val = Vcoding_system_for_read; | |
2822 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) | |
2823 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
2824 | val = Qnil; | |
2825 | p->decode_coding_system = val; | |
2826 | ||
2827 | val = Qnil; | |
2828 | if (!NILP (tem)) | |
2829 | { | |
2830 | val = XCAR (XCDR (tem)); | |
2831 | if (CONSP (val)) | |
2832 | val = XCDR (val); | |
2833 | } | |
2834 | else if (!NILP (Vcoding_system_for_write)) | |
2835 | val = Vcoding_system_for_write; | |
2836 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) | |
2837 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
2838 | val = Qnil; | |
2839 | p->encode_coding_system = val; | |
2840 | ||
2841 | setup_process_coding_systems (proc); | |
2842 | p->decoding_buf = make_uninit_string (0); | |
2843 | p->decoding_carryover = 0; | |
2844 | p->encoding_buf = make_uninit_string (0); | |
2845 | p->inherit_coding_system_flag | |
2846 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); | |
2847 | ||
ed3751c8 | 2848 | Fserial_process_configure (nargs, args); |
d888760c GM |
2849 | |
2850 | specpdl_ptr = specpdl + specpdl_count; | |
2851 | ||
2852 | UNGCPRO; | |
2853 | return proc; | |
2854 | } | |
d888760c | 2855 | |
e690ca94 KS |
2856 | /* Create a network stream/datagram client/server process. Treated |
2857 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2858 | differences are in status display and process deletion. A network |
2859 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2860 | stop/continue it and deactivate/close it via delete-process */ |
2861 | ||
177c0ea7 JB |
2862 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2863 | 0, MANY, 0, | |
e690ca94 KS |
2864 | doc: /* Create and return a network server or client process. |
2865 | ||
fa9d4315 | 2866 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2867 | input and output work as for subprocesses and `delete-process' closes |
2868 | a network connection. However, a network process has no process id, | |
d22426e1 | 2869 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2870 | processes. |
2871 | ||
2872 | Arguments are specified as keyword/argument pairs. The following | |
2873 | arguments are defined: | |
2874 | ||
2875 | :name NAME -- NAME is name for process. It is modified if necessary | |
2876 | to make it unique. | |
2877 | ||
2878 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2879 | with the process. Process output goes at end of that buffer, unless | |
2880 | you specify an output stream or filter function to handle the output. | |
2881 | BUFFER may be also nil, meaning that this process is not associated | |
2882 | with any buffer. | |
2883 | ||
2884 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2885 | address. The symbol `local' specifies the local host. If specified | |
2886 | for a server process, it must be a valid name or address for the local | |
2887 | host, and only clients connecting to that address will be accepted. | |
2888 | ||
2889 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2890 | integer specifying a port number to connect to. If SERVICE is t, | |
eba25e7c GM |
2891 | a random port number is selected for the server. (If Emacs was |
2892 | compiled with getaddrinfo, a port number can also be specified as a | |
2893 | string, e.g. "80", as well as an integer. This is not portable.) | |
e690ca94 | 2894 | |
9057ff80 | 2895 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
f00c449b SM |
2896 | stream type connection, `datagram' creates a datagram type connection, |
2897 | `seqpacket' creates a reliable datagram connection. | |
9057ff80 | 2898 | |
e690ca94 | 2899 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2900 | service specified by HOST and SERVICE. The default (nil) is to use |
2901 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2902 | and port number specified by HOST and SERVICE. Other address families | |
2903 | supported are: | |
e690ca94 | 2904 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2905 | ipv4 -- use IPv4 address family only. |
2906 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2907 | |
2908 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2909 | This parameter is ignored when opening a client process. When specified | |
2910 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2911 | ||
2912 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2913 | connection. This parameter is ignored when opening a stream server | |
2914 | process. For a datagram server process, it specifies the initial | |
2915 | setting of the remote datagram address. When specified for a client | |
2916 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2917 | ||
2918 | The format of ADDRESS depends on the address family: | |
2919 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2920 | corresponding to numeric IP address A.B.C.D and port number P. | |
2921 | - A local address is represented as a string with the address in the | |
2922 | local address space. | |
2923 | - An "unsupported family" address is represented by a cons (F . AV) | |
2924 | where F is the family number and AV is a vector containing the socket | |
2925 | address data with one element per address data byte. Do not rely on | |
2926 | this format in portable code, as it may depend on implementation | |
2927 | defined constants, data sizes, and data structure alignment. | |
2928 | ||
6b61353c KH |
2929 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2930 | system used for both reading and writing for this process. If CODING | |
2931 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2932 | ENCODING is used for writing. | |
e690ca94 KS |
2933 | |
2934 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2935 | return without waiting for the connection to complete; instead, the | |
2936 | sentinel function will be called with second arg matching "open" (if | |
2937 | successful) or "failed" when the connect completes. Default is to use | |
2938 | a blocking connect (i.e. wait) for stream type connections. | |
2939 | ||
2940 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2941 | running when Emacs is exited. |
e690ca94 KS |
2942 | |
2943 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2944 | In the stopped state, a server process does not accept new | |
2945 | connections, and a client process does not handle incoming traffic. | |
2946 | The stopped state is cleared by `continue-process' and set by | |
2947 | `stop-process'. | |
2948 | ||
2949 | :filter FILTER -- Install FILTER as the process filter. | |
2950 | ||
7392e23c KS |
2951 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2952 | process filter are multibyte, otherwise they are unibyte. | |
e0f24100 | 2953 | If this keyword is not specified, the strings are multibyte if |
03f04413 KH |
2954 | `default-enable-multibyte-characters' is non-nil. |
2955 | ||
e690ca94 KS |
2956 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2957 | ||
2958 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2959 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2960 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2961 | is the server process, CLIENT is the new process for the connection, | |
2962 | and MESSAGE is a string. | |
2963 | ||
faa7db08 | 2964 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2965 | |
6b61353c | 2966 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2967 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
6b61353c KH |
2968 | If QLEN is an integer, it is used as the max. length of the server's |
2969 | pending connection queue (also known as the backlog); the default | |
2970 | queue length is 5. Default is to create a client process. | |
2971 | ||
2972 | The following network options can be specified for this connection: | |
2973 | ||
2974 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. | |
2975 | :dontroute BOOL -- Only send to directly connected hosts. | |
2976 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2977 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2978 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2979 | :priority INT -- Set protocol defined priority for sent packets. | |
2980 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2981 | (this is allowed by default for a server process). | |
2982 | :bindtodevice NAME -- bind to interface NAME. Using this may require | |
2983 | special privileges on some systems. | |
2984 | ||
2985 | Consult the relevant system programmer's manual pages for more | |
2986 | information on using these options. | |
2987 | ||
2988 | ||
2989 | A server process will listen for and accept connections from clients. | |
2990 | When a client connection is accepted, a new network process is created | |
2991 | for the connection with the following parameters: | |
e690ca94 | 2992 | |
e690ca94 KS |
2993 | - The client's process name is constructed by concatenating the server |
2994 | process' NAME and a client identification string. | |
2995 | - If the FILTER argument is non-nil, the client process will not get a | |
2996 | separate process buffer; otherwise, the client's process buffer is a newly | |
2997 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2998 | NAME concatenated with the client identification string. |
e690ca94 KS |
2999 | - The connection type and the process filter and sentinel parameters are |
3000 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
3001 | - The client process' contact info is set according to the client's | |
3002 | addressing information (typically an IP address and a port number). | |
faa7db08 | 3003 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
3004 | |
3005 | Notice that the FILTER and SENTINEL args are never used directly by | |
3006 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
3007 | the server process, but via the optional :log function, accepted (and |
3008 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 3009 | |
365aee82 KS |
3010 | The original argument list, modified with the actual connection |
3011 | information, is available via the `process-contact' function. | |
365aee82 | 3012 | |
fa9d4315 | 3013 | usage: (make-network-process &rest ARGS) */) |
5842a27b | 3014 | (int nargs, Lisp_Object *args) |
d0d6b7c5 JB |
3015 | { |
3016 | Lisp_Object proc; | |
e690ca94 KS |
3017 | Lisp_Object contact; |
3018 | struct Lisp_Process *p; | |
70dbdb36 | 3019 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3020 | struct addrinfo ai, *res, *lres; |
e1652a86 | 3021 | struct addrinfo hints; |
8ea90aa3 DN |
3022 | const char *portstring; |
3023 | char portbuf[128]; | |
70dbdb36 | 3024 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
3025 | struct _emacs_addrinfo |
3026 | { | |
3027 | int ai_family; | |
3028 | int ai_socktype; | |
3029 | int ai_protocol; | |
3030 | int ai_addrlen; | |
3031 | struct sockaddr *ai_addr; | |
3032 | struct _emacs_addrinfo *ai_next; | |
3033 | } ai, *res, *lres; | |
418b48fd | 3034 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
3035 | struct sockaddr_in address_in; |
3036 | #ifdef HAVE_LOCAL_SOCKETS | |
3037 | struct sockaddr_un address_un; | |
3038 | #endif | |
3039 | int port; | |
dd2a17ab KS |
3040 | int ret = 0; |
3041 | int xerrno = 0; | |
418b48fd | 3042 | int s = -1, outch, inch; |
e690ca94 | 3043 | struct gcpro gcpro1; |
aed13378 | 3044 | int count = SPECPDL_INDEX (); |
5684cd6e | 3045 | int count1; |
e690ca94 KS |
3046 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
3047 | Lisp_Object tem; | |
3048 | Lisp_Object name, buffer, host, service, address; | |
3049 | Lisp_Object filter, sentinel; | |
3050 | int is_non_blocking_client = 0; | |
6b61353c | 3051 | int is_server = 0, backlog = 5; |
9057ff80 | 3052 | int socktype; |
e690ca94 KS |
3053 | int family = -1; |
3054 | ||
3055 | if (nargs == 0) | |
3056 | return Qnil; | |
dd2a17ab | 3057 | |
e690ca94 KS |
3058 | /* Save arguments for process-contact and clone-process. */ |
3059 | contact = Flist (nargs, args); | |
3060 | GCPRO1 (contact); | |
3061 | ||
bff3ed0a RS |
3062 | #ifdef WINDOWSNT |
3063 | /* Ensure socket support is loaded if available. */ | |
3064 | init_winsock (TRUE); | |
3065 | #endif | |
3066 | ||
9057ff80 KS |
3067 | /* :type TYPE (nil: stream, datagram */ |
3068 | tem = Fplist_get (contact, QCtype); | |
3069 | if (NILP (tem)) | |
3070 | socktype = SOCK_STREAM; | |
3071 | #ifdef DATAGRAM_SOCKETS | |
3072 | else if (EQ (tem, Qdatagram)) | |
3073 | socktype = SOCK_DGRAM; | |
f00c449b SM |
3074 | #endif |
3075 | #ifdef HAVE_SEQPACKET | |
3076 | else if (EQ (tem, Qseqpacket)) | |
3077 | socktype = SOCK_SEQPACKET; | |
e690ca94 | 3078 | #endif |
9057ff80 KS |
3079 | else |
3080 | error ("Unsupported connection type"); | |
e690ca94 KS |
3081 | |
3082 | /* :server BOOL */ | |
3083 | tem = Fplist_get (contact, QCserver); | |
3084 | if (!NILP (tem)) | |
3085 | { | |
75728599 JR |
3086 | /* Don't support network sockets when non-blocking mode is |
3087 | not available, since a blocked Emacs is not useful. */ | |
132d0475 | 3088 | #if !defined(O_NONBLOCK) && !defined(O_NDELAY) |
e690ca94 KS |
3089 | error ("Network servers not supported"); |
3090 | #else | |
3091 | is_server = 1; | |
6b61353c KH |
3092 | if (INTEGERP (tem)) |
3093 | backlog = XINT (tem); | |
e690ca94 KS |
3094 | #endif |
3095 | } | |
3096 | ||
3097 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
3098 | QCaddress = is_server ? QClocal : QCremote; | |
3099 | ||
d7e344cd | 3100 | /* :nowait BOOL */ |
84b31826 | 3101 | if (!is_server && socktype != SOCK_DGRAM |
e690ca94 KS |
3102 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) |
3103 | { | |
3104 | #ifndef NON_BLOCKING_CONNECT | |
3105 | error ("Non-blocking connect not supported"); | |
3106 | #else | |
3107 | is_non_blocking_client = 1; | |
3108 | #endif | |
3109 | } | |
3110 | ||
3111 | name = Fplist_get (contact, QCname); | |
3112 | buffer = Fplist_get (contact, QCbuffer); | |
3113 | filter = Fplist_get (contact, QCfilter); | |
3114 | sentinel = Fplist_get (contact, QCsentinel); | |
3115 | ||
b7826503 | 3116 | CHECK_STRING (name); |
e690ca94 | 3117 | |
e690ca94 KS |
3118 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ |
3119 | ai.ai_socktype = socktype; | |
3120 | ai.ai_protocol = 0; | |
3121 | ai.ai_next = NULL; | |
3122 | res = &ai; | |
a319f7c1 | 3123 | |
e690ca94 KS |
3124 | /* :local ADDRESS or :remote ADDRESS */ |
3125 | address = Fplist_get (contact, QCaddress); | |
3126 | if (!NILP (address)) | |
a319f7c1 | 3127 | { |
e690ca94 KS |
3128 | host = service = Qnil; |
3129 | ||
3130 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
3131 | error ("Malformed :address"); | |
3132 | ai.ai_family = family; | |
3133 | ai.ai_addr = alloca (ai.ai_addrlen); | |
3134 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
3135 | goto open_socket; | |
a319f7c1 | 3136 | } |
e690ca94 KS |
3137 | |
3138 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
3139 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 3140 | if (NILP (tem)) |
a319f7c1 | 3141 | { |
87b6ca8d | 3142 | #if defined(HAVE_GETADDRINFO) && defined(AF_INET6) |
e1652a86 KS |
3143 | family = AF_UNSPEC; |
3144 | #else | |
3145 | family = AF_INET; | |
e690ca94 | 3146 | #endif |
a319f7c1 | 3147 | } |
e1652a86 KS |
3148 | #ifdef HAVE_LOCAL_SOCKETS |
3149 | else if (EQ (tem, Qlocal)) | |
3150 | family = AF_LOCAL; | |
3151 | #endif | |
3152 | #ifdef AF_INET6 | |
3153 | else if (EQ (tem, Qipv6)) | |
3154 | family = AF_INET6; | |
3155 | #endif | |
3156 | else if (EQ (tem, Qipv4)) | |
3157 | family = AF_INET; | |
3158 | else if (INTEGERP (tem)) | |
3159 | family = XINT (tem); | |
3160 | else | |
e690ca94 | 3161 | error ("Unknown address family"); |
e1652a86 | 3162 | |
e690ca94 KS |
3163 | ai.ai_family = family; |
3164 | ||
3165 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
3166 | service = Fplist_get (contact, QCservice); | |
3167 | ||
66a9f7f4 SM |
3168 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
3169 | host = Fplist_get (contact, QChost); | |
3170 | if (!NILP (host)) | |
3171 | { | |
3172 | if (EQ (host, Qlocal)) | |
3173 | host = build_string ("localhost"); | |
3174 | CHECK_STRING (host); | |
3175 | } | |
3176 | ||
e690ca94 KS |
3177 | #ifdef HAVE_LOCAL_SOCKETS |
3178 | if (family == AF_LOCAL) | |
d0d6b7c5 | 3179 | { |
66a9f7f4 SM |
3180 | if (!NILP (host)) |
3181 | { | |
3182 | message (":family local ignores the :host \"%s\" property", | |
3183 | SDATA (host)); | |
3184 | contact = Fplist_put (contact, QChost, Qnil); | |
3185 | host = Qnil; | |
3186 | } | |
b7826503 | 3187 | CHECK_STRING (service); |
72af86bd | 3188 | memset (&address_un, 0, sizeof address_un); |
e690ca94 | 3189 | address_un.sun_family = AF_LOCAL; |
d5db4077 | 3190 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
3191 | ai.ai_addr = (struct sockaddr *) &address_un; |
3192 | ai.ai_addrlen = sizeof address_un; | |
3193 | goto open_socket; | |
d0d6b7c5 | 3194 | } |
e690ca94 | 3195 | #endif |
a319f7c1 | 3196 | |
798b64bb KH |
3197 | /* Slow down polling to every ten seconds. |
3198 | Some kernels have a bug which causes retrying connect to fail | |
3199 | after a connect. Polling can interfere with gethostbyname too. */ | |
3200 | #ifdef POLL_FOR_INPUT | |
84b31826 | 3201 | if (socktype != SOCK_DGRAM) |
e690ca94 KS |
3202 | { |
3203 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
3204 | bind_polling_period (10); | |
3205 | } | |
798b64bb KH |
3206 | #endif |
3207 | ||
a319f7c1 | 3208 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3209 | /* If we have a host, use getaddrinfo to resolve both host and service. |
3210 | Otherwise, use getservbyname to lookup the service. */ | |
3211 | if (!NILP (host)) | |
3212 | { | |
3213 | ||
3214 | /* SERVICE can either be a string or int. | |
3215 | Convert to a C string for later use by getaddrinfo. */ | |
3216 | if (EQ (service, Qt)) | |
3217 | portstring = "0"; | |
3218 | else if (INTEGERP (service)) | |
3219 | { | |
3220 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
3221 | portstring = portbuf; | |
3222 | } | |
3223 | else | |
3224 | { | |
3225 | CHECK_STRING (service); | |
d5db4077 | 3226 | portstring = SDATA (service); |
e690ca94 KS |
3227 | } |
3228 | ||
3229 | immediate_quit = 1; | |
3230 | QUIT; | |
3231 | memset (&hints, 0, sizeof (hints)); | |
3232 | hints.ai_flags = 0; | |
e1652a86 | 3233 | hints.ai_family = family; |
e690ca94 KS |
3234 | hints.ai_socktype = socktype; |
3235 | hints.ai_protocol = 0; | |
08116b48 CY |
3236 | |
3237 | #ifdef HAVE_RES_INIT | |
3238 | res_init (); | |
3239 | #endif | |
3240 | ||
d5db4077 | 3241 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 3242 | if (ret) |
f6270f62 | 3243 | #ifdef HAVE_GAI_STRERROR |
ed3751c8 | 3244 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror (ret)); |
f6270f62 | 3245 | #else |
63136da6 | 3246 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 3247 | #endif |
e690ca94 | 3248 | immediate_quit = 0; |
a319f7c1 | 3249 | |
e690ca94 KS |
3250 | goto open_socket; |
3251 | } | |
3252 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3253 | |
e690ca94 KS |
3254 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3255 | has been specified (e.g. for a local server process). */ | |
3256 | ||
3257 | if (EQ (service, Qt)) | |
3258 | port = 0; | |
3259 | else if (INTEGERP (service)) | |
3260 | port = htons ((unsigned short) XINT (service)); | |
3261 | else | |
616da37c | 3262 | { |
e690ca94 KS |
3263 | struct servent *svc_info; |
3264 | CHECK_STRING (service); | |
177c0ea7 | 3265 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
3266 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3267 | if (svc_info == 0) | |
d5db4077 | 3268 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3269 | port = svc_info->s_port; |
3270 | } | |
3271 | ||
72af86bd | 3272 | memset (&address_in, 0, sizeof address_in); |
e690ca94 KS |
3273 | address_in.sin_family = family; |
3274 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3275 | address_in.sin_port = port; | |
3276 | ||
3277 | #ifndef HAVE_GETADDRINFO | |
3278 | if (!NILP (host)) | |
3279 | { | |
3280 | struct hostent *host_info_ptr; | |
3281 | ||
3282 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 3283 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3284 | immediate_quit = 1; |
3285 | QUIT; | |
08116b48 CY |
3286 | |
3287 | #ifdef HAVE_RES_INIT | |
3288 | res_init (); | |
3289 | #endif | |
3290 | ||
d5db4077 | 3291 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3292 | immediate_quit = 0; |
177c0ea7 | 3293 | |
e690ca94 KS |
3294 | if (host_info_ptr) |
3295 | { | |
72af86bd AS |
3296 | memcpy (&address_in.sin_addr, host_info_ptr->h_addr, |
3297 | host_info_ptr->h_length); | |
e690ca94 KS |
3298 | family = host_info_ptr->h_addrtype; |
3299 | address_in.sin_family = family; | |
3300 | } | |
3301 | else | |
3302 | /* Attempt to interpret host as numeric inet address */ | |
3303 | { | |
4624371d | 3304 | unsigned long numeric_addr; |
d5db4077 | 3305 | numeric_addr = inet_addr ((char *) SDATA (host)); |
4624371d | 3306 | if (numeric_addr == -1) |
d5db4077 | 3307 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3308 | |
72af86bd AS |
3309 | memcpy (&address_in.sin_addr, &numeric_addr, |
3310 | sizeof (address_in.sin_addr)); | |
e690ca94 | 3311 | } |
d0d6b7c5 | 3312 | |
e690ca94 | 3313 | } |
dd2a17ab | 3314 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3315 | |
e690ca94 KS |
3316 | ai.ai_family = family; |
3317 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3318 | ai.ai_addrlen = sizeof address_in; | |
3319 | ||
3320 | open_socket: | |
3321 | ||
dd2a17ab | 3322 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3323 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3324 | s = -1; |
457a9bee | 3325 | |
dd2a17ab KS |
3326 | for (lres = res; lres; lres = lres->ai_next) |
3327 | { | |
6b61353c KH |
3328 | int optn, optbits; |
3329 | ||
649dbf36 CY |
3330 | retry_connect: |
3331 | ||
dd2a17ab KS |
3332 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3333 | if (s < 0) | |
3334 | { | |
3335 | xerrno = errno; | |
3336 | continue; | |
3337 | } | |
0f2ee0c1 | 3338 | |
e690ca94 KS |
3339 | #ifdef DATAGRAM_SOCKETS |
3340 | if (!is_server && socktype == SOCK_DGRAM) | |
3341 | break; | |
3342 | #endif /* DATAGRAM_SOCKETS */ | |
3343 | ||
dd2a17ab | 3344 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3345 | if (is_non_blocking_client) |
dd2a17ab KS |
3346 | { |
3347 | #ifdef O_NONBLOCK | |
3348 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3349 | #else | |
3350 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3351 | #endif | |
3352 | if (ret < 0) | |
3353 | { | |
3354 | xerrno = errno; | |
3355 | emacs_close (s); | |
3356 | s = -1; | |
3357 | continue; | |
3358 | } | |
3359 | } | |
3360 | #endif | |
177c0ea7 | 3361 | |
dd2a17ab | 3362 | /* Make us close S if quit. */ |
dd2a17ab KS |
3363 | record_unwind_protect (close_file_unwind, make_number (s)); |
3364 | ||
6b61353c KH |
3365 | /* Parse network options in the arg list. |
3366 | We simply ignore anything which isn't a known option (including other keywords). | |
63136da6 | 3367 | An error is signaled if setting a known option fails. */ |
6b61353c KH |
3368 | for (optn = optbits = 0; optn < nargs-1; optn += 2) |
3369 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3370 | ||
e690ca94 KS |
3371 | if (is_server) |
3372 | { | |
3373 | /* Configure as a server socket. */ | |
6b61353c KH |
3374 | |
3375 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3376 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3377 | #ifdef HAVE_LOCAL_SOCKETS |
3378 | if (family != AF_LOCAL) | |
3379 | #endif | |
6b61353c KH |
3380 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3381 | { | |
3382 | int optval = 1; | |
3383 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
3384 | report_file_error ("Cannot set reuse option on server socket", Qnil); | |
3385 | } | |
177c0ea7 | 3386 | |
e690ca94 KS |
3387 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3388 | report_file_error ("Cannot bind server socket", Qnil); | |
3389 | ||
3390 | #ifdef HAVE_GETSOCKNAME | |
3391 | if (EQ (service, Qt)) | |
3392 | { | |
3393 | struct sockaddr_in sa1; | |
3394 | int len1 = sizeof (sa1); | |
3395 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3396 | { | |
3397 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3398 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3399 | contact = Fplist_put (contact, QCservice, service); |
3400 | } | |
3401 | } | |
3402 | #endif | |
3403 | ||
84b31826 | 3404 | if (socktype != SOCK_DGRAM && listen (s, backlog)) |
e690ca94 KS |
3405 | report_file_error ("Cannot listen on server socket", Qnil); |
3406 | ||
3407 | break; | |
3408 | } | |
3409 | ||
dd2a17ab KS |
3410 | immediate_quit = 1; |
3411 | QUIT; | |
3412 | ||
dd2a17ab KS |
3413 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); |
3414 | xerrno = errno; | |
3415 | ||
dd2a17ab KS |
3416 | if (ret == 0 || xerrno == EISCONN) |
3417 | { | |
dd2a17ab KS |
3418 | /* The unwind-protect will be discarded afterwards. |
3419 | Likewise for immediate_quit. */ | |
3420 | break; | |
3421 | } | |
3422 | ||
3423 | #ifdef NON_BLOCKING_CONNECT | |
3424 | #ifdef EINPROGRESS | |
e690ca94 | 3425 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3426 | break; |
3427 | #else | |
3428 | #ifdef EWOULDBLOCK | |
e690ca94 | 3429 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3430 | break; |
3431 | #endif | |
3432 | #endif | |
3433 | #endif | |
649dbf36 CY |
3434 | |
3435 | #ifndef WINDOWSNT | |
cd591dbc HE |
3436 | if (xerrno == EINTR) |
3437 | { | |
3438 | /* Unlike most other syscalls connect() cannot be called | |
3439 | again. (That would return EALREADY.) The proper way to | |
3440 | wait for completion is select(). */ | |
649dbf36 | 3441 | int sc, len; |
cd591dbc HE |
3442 | SELECT_TYPE fdset; |
3443 | retry_select: | |
3444 | FD_ZERO (&fdset); | |
3445 | FD_SET (s, &fdset); | |
3446 | QUIT; | |
3447 | sc = select (s + 1, (SELECT_TYPE *)0, &fdset, (SELECT_TYPE *)0, | |
3448 | (EMACS_TIME *)0); | |
3449 | if (sc == -1) | |
3450 | { | |
649dbf36 | 3451 | if (errno == EINTR) |
cd591dbc | 3452 | goto retry_select; |
649dbf36 | 3453 | else |
cd591dbc HE |
3454 | report_file_error ("select failed", Qnil); |
3455 | } | |
3456 | eassert (sc > 0); | |
649dbf36 CY |
3457 | |
3458 | len = sizeof xerrno; | |
3459 | eassert (FD_ISSET (s, &fdset)); | |
3460 | if (getsockopt (s, SOL_SOCKET, SO_ERROR, &xerrno, &len) == -1) | |
3461 | report_file_error ("getsockopt failed", Qnil); | |
3462 | if (xerrno) | |
3463 | errno = xerrno, report_file_error ("error during connect", Qnil); | |
3464 | else | |
3465 | break; | |
cd591dbc | 3466 | } |
649dbf36 | 3467 | #endif /* !WINDOWSNT */ |
e333e864 | 3468 | |
0f2ee0c1 RS |
3469 | immediate_quit = 0; |
3470 | ||
dd2a17ab | 3471 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3472 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3473 | emacs_close (s); |
dd2a17ab | 3474 | s = -1; |
649dbf36 CY |
3475 | |
3476 | #ifdef WINDOWSNT | |
3477 | if (xerrno == EINTR) | |
3478 | goto retry_connect; | |
3479 | #endif | |
dd2a17ab | 3480 | } |
457a9bee | 3481 | |
e690ca94 KS |
3482 | if (s >= 0) |
3483 | { | |
3484 | #ifdef DATAGRAM_SOCKETS | |
3485 | if (socktype == SOCK_DGRAM) | |
3486 | { | |
3487 | if (datagram_address[s].sa) | |
3488 | abort (); | |
3489 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3490 | datagram_address[s].len = lres->ai_addrlen; | |
3491 | if (is_server) | |
3492 | { | |
3493 | Lisp_Object remote; | |
72af86bd | 3494 | memset (datagram_address[s].sa, 0, lres->ai_addrlen); |
e690ca94 KS |
3495 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) |
3496 | { | |
3497 | int rfamily, rlen; | |
3498 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3499 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3500 | conv_lisp_to_sockaddr (rfamily, remote, | |
3501 | datagram_address[s].sa, rlen); | |
3502 | } | |
3503 | } | |
3504 | else | |
72af86bd | 3505 | memcpy (datagram_address[s].sa, lres->ai_addr, lres->ai_addrlen); |
e690ca94 KS |
3506 | } |
3507 | #endif | |
177c0ea7 | 3508 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3509 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3510 | #ifdef HAVE_GETSOCKNAME |
3511 | if (!is_server) | |
3512 | { | |
3513 | struct sockaddr_in sa1; | |
3514 | int len1 = sizeof (sa1); | |
3515 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3516 | contact = Fplist_put (contact, QClocal, | |
d3da34e0 | 3517 | conv_sockaddr_to_lisp ((struct sockaddr *)&sa1, len1)); |
2185db04 KS |
3518 | } |
3519 | #endif | |
e690ca94 KS |
3520 | } |
3521 | ||
54b3b62f YM |
3522 | immediate_quit = 0; |
3523 | ||
dd2a17ab | 3524 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 3525 | if (res != &ai) |
54b3b62f YM |
3526 | { |
3527 | BLOCK_INPUT; | |
3528 | freeaddrinfo (res); | |
3529 | UNBLOCK_INPUT; | |
3530 | } | |
dd2a17ab KS |
3531 | #endif |
3532 | ||
e690ca94 KS |
3533 | /* Discard the unwind protect for closing S, if any. */ |
3534 | specpdl_ptr = specpdl + count1; | |
3535 | ||
3536 | /* Unwind bind_polling_period and request_sigio. */ | |
3537 | unbind_to (count, Qnil); | |
3538 | ||
dd2a17ab KS |
3539 | if (s < 0) |
3540 | { | |
dd2a17ab KS |
3541 | /* If non-blocking got this far - and failed - assume non-blocking is |
3542 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3543 | the normal blocking calls to open-network-stream handles this error |
3544 | better. */ | |
3545 | if (is_non_blocking_client) | |
dd2a17ab | 3546 | return Qnil; |
dd2a17ab | 3547 | |
d0d6b7c5 | 3548 | errno = xerrno; |
e690ca94 KS |
3549 | if (is_server) |
3550 | report_file_error ("make server process failed", contact); | |
3551 | else | |
3552 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3553 | } |
44ade2e9 | 3554 | |
d0d6b7c5 | 3555 | inch = s; |
59f23005 | 3556 | outch = s; |
d0d6b7c5 JB |
3557 | |
3558 | if (!NILP (buffer)) | |
3559 | buffer = Fget_buffer_create (buffer); | |
3560 | proc = make_process (name); | |
3561 | ||
3562 | chan_process[inch] = proc; | |
3563 | ||
3564 | #ifdef O_NONBLOCK | |
3565 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3566 | #else | |
3567 | #ifdef O_NDELAY | |
3568 | fcntl (inch, F_SETFL, O_NDELAY); | |
3569 | #endif | |
3570 | #endif | |
3571 | ||
e690ca94 KS |
3572 | p = XPROCESS (proc); |
3573 | ||
3574 | p->childp = contact; | |
faa7db08 | 3575 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
d888760c | 3576 | p->type = Qnetwork; |
177c0ea7 | 3577 | |
e690ca94 KS |
3578 | p->buffer = buffer; |
3579 | p->sentinel = sentinel; | |
3580 | p->filter = filter; | |
3581 | p->log = Fplist_get (contact, QClog); | |
3582 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
60f0fb11 | 3583 | p->kill_without_query = 1; |
e690ca94 KS |
3584 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) |
3585 | p->command = Qt; | |
6bfd98e7 | 3586 | p->pid = 0; |
60f0fb11 SM |
3587 | p->infd = inch; |
3588 | p->outfd = outch; | |
84b31826 | 3589 | if (is_server && socktype != SOCK_DGRAM) |
e690ca94 | 3590 | p->status = Qlisten; |
dd2a17ab | 3591 | |
f523e0c3 SM |
3592 | /* Make the process marker point into the process buffer (if any). */ |
3593 | if (BUFFERP (buffer)) | |
3594 | set_marker_both (p->mark, buffer, | |
3595 | BUF_ZV (XBUFFER (buffer)), | |
3596 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
3597 | ||
dd2a17ab | 3598 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3599 | if (is_non_blocking_client) |
dd2a17ab KS |
3600 | { |
3601 | /* We may get here if connect did succeed immediately. However, | |
3602 | in that case, we still need to signal this like a non-blocking | |
3603 | connection. */ | |
e690ca94 | 3604 | p->status = Qconnect; |
dd2a17ab KS |
3605 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3606 | { | |
3607 | FD_SET (inch, &connect_wait_mask); | |
3608 | num_pending_connects++; | |
3609 | } | |
3610 | } | |
3611 | else | |
3612 | #endif | |
e690ca94 KS |
3613 | /* A server may have a client filter setting of Qt, but it must |
3614 | still listen for incoming connects unless it is stopped. */ | |
3615 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3616 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3617 | { |
3618 | FD_SET (inch, &input_wait_mask); | |
3619 | FD_SET (inch, &non_keyboard_wait_mask); | |
3620 | } | |
3621 | ||
7d0e672e RS |
3622 | if (inch > max_process_desc) |
3623 | max_process_desc = inch; | |
d0d6b7c5 | 3624 | |
e690ca94 KS |
3625 | tem = Fplist_member (contact, QCcoding); |
3626 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3627 | tem = Qnil; /* No error message (too late!). */ | |
3628 | ||
67918941 RS |
3629 | { |
3630 | /* Setup coding systems for communicating with the network stream. */ | |
3631 | struct gcpro gcpro1; | |
3632 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3633 | Lisp_Object coding_systems = Qt; | |
3634 | Lisp_Object args[5], val; | |
3635 | ||
e690ca94 | 3636 | if (!NILP (tem)) |
6b61353c KH |
3637 | { |
3638 | val = XCAR (XCDR (tem)); | |
3639 | if (CONSP (val)) | |
3640 | val = XCAR (val); | |
3641 | } | |
e690ca94 | 3642 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3643 | val = Vcoding_system_for_read; |
41d03b9a GM |
3644 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3645 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3646 | /* We dare not decode end-of-line format by setting VAL to |
3647 | Qraw_text, because the existing Emacs Lisp libraries | |
3648 | assume that they receive bare code including a sequene of | |
3649 | CR LF. */ | |
3650 | val = Qnil; | |
3651 | else | |
3652 | { | |
991234f0 KS |
3653 | if (NILP (host) || NILP (service)) |
3654 | coding_systems = Qnil; | |
3655 | else | |
3656 | { | |
3657 | args[0] = Qopen_network_stream, args[1] = name, | |
3658 | args[2] = buffer, args[3] = host, args[4] = service; | |
3659 | GCPRO1 (proc); | |
3660 | coding_systems = Ffind_operation_coding_system (5, args); | |
3661 | UNGCPRO; | |
3662 | } | |
67918941 | 3663 | if (CONSP (coding_systems)) |
70949dac | 3664 | val = XCAR (coding_systems); |
67918941 | 3665 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3666 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3667 | else |
3668 | val = Qnil; | |
3669 | } | |
e690ca94 | 3670 | p->decode_coding_system = val; |
0fa1789e | 3671 | |
e690ca94 | 3672 | if (!NILP (tem)) |
6b61353c KH |
3673 | { |
3674 | val = XCAR (XCDR (tem)); | |
3675 | if (CONSP (val)) | |
3676 | val = XCDR (val); | |
3677 | } | |
e690ca94 | 3678 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3679 | val = Vcoding_system_for_write; |
3680 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3681 | val = Qnil; | |
3682 | else | |
3683 | { | |
3684 | if (EQ (coding_systems, Qt)) | |
3685 | { | |
991234f0 KS |
3686 | if (NILP (host) || NILP (service)) |
3687 | coding_systems = Qnil; | |
3688 | else | |
3689 | { | |
3690 | args[0] = Qopen_network_stream, args[1] = name, | |
3691 | args[2] = buffer, args[3] = host, args[4] = service; | |
3692 | GCPRO1 (proc); | |
3693 | coding_systems = Ffind_operation_coding_system (5, args); | |
3694 | UNGCPRO; | |
3695 | } | |
67918941 RS |
3696 | } |
3697 | if (CONSP (coding_systems)) | |
70949dac | 3698 | val = XCDR (coding_systems); |
67918941 | 3699 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3700 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3701 | else |
3702 | val = Qnil; | |
3703 | } | |
e690ca94 | 3704 | p->encode_coding_system = val; |
67918941 | 3705 | } |
03f04413 | 3706 | setup_process_coding_systems (proc); |
0fa1789e | 3707 | |
e690ca94 | 3708 | p->decoding_buf = make_uninit_string (0); |
60f0fb11 | 3709 | p->decoding_carryover = 0; |
e690ca94 | 3710 | p->encoding_buf = make_uninit_string (0); |
0fa1789e | 3711 | |
e690ca94 | 3712 | p->inherit_coding_system_flag |
e6fca843 | 3713 | = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system); |
52a1b894 | 3714 | |
d0d6b7c5 JB |
3715 | UNGCPRO; |
3716 | return proc; | |
3717 | } | |
d0d6b7c5 | 3718 | |
6b61353c | 3719 | \f |
fce70521 | 3720 | #if defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
6b61353c KH |
3721 | |
3722 | #ifdef SIOCGIFCONF | |
3723 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3724 | doc: /* Return an alist of all network interfaces and their network address. | |
3725 | Each element is a cons, the car of which is a string containing the | |
3726 | interface name, and the cdr is the network address in internal | |
3727 | format; see the description of ADDRESS in `make-network-process'. */) | |
5842a27b | 3728 | (void) |
6b61353c KH |
3729 | { |
3730 | struct ifconf ifconf; | |
3731 | struct ifreq *ifreqs = NULL; | |
3732 | int ifaces = 0; | |
3733 | int buf_size, s; | |
3734 | Lisp_Object res; | |
3735 | ||
3736 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3737 | if (s < 0) | |
3738 | return Qnil; | |
3739 | ||
3740 | again: | |
3741 | ifaces += 25; | |
ed3751c8 | 3742 | buf_size = ifaces * sizeof (ifreqs[0]); |
6b61353c KH |
3743 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); |
3744 | if (!ifreqs) | |
3745 | { | |
3746 | close (s); | |
3747 | return Qnil; | |
3748 | } | |
3749 | ||
3750 | ifconf.ifc_len = buf_size; | |
3751 | ifconf.ifc_req = ifreqs; | |
3752 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3753 | { | |
3754 | close (s); | |
3755 | return Qnil; | |
3756 | } | |
3757 | ||
3758 | if (ifconf.ifc_len == buf_size) | |
3759 | goto again; | |
3760 | ||
3761 | close (s); | |
3762 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3763 | ||
3764 | res = Qnil; | |
3765 | while (--ifaces >= 0) | |
3766 | { | |
3767 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3768 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3769 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3770 | continue; | |
72af86bd | 3771 | memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name)); |
6b61353c KH |
3772 | namebuf[sizeof (ifq->ifr_name)] = 0; |
3773 | res = Fcons (Fcons (build_string (namebuf), | |
3774 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3775 | sizeof (struct sockaddr))), | |
3776 | res); | |
3777 | } | |
3778 | ||
3779 | return res; | |
3780 | } | |
3781 | #endif /* SIOCGIFCONF */ | |
3782 | ||
3783 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3784 | ||
3785 | struct ifflag_def { | |
3786 | int flag_bit; | |
91433552 | 3787 | const char *flag_sym; |
6b61353c KH |
3788 | }; |
3789 | ||
91433552 | 3790 | static const struct ifflag_def ifflag_table[] = { |
6b61353c KH |
3791 | #ifdef IFF_UP |
3792 | { IFF_UP, "up" }, | |
3793 | #endif | |
3794 | #ifdef IFF_BROADCAST | |
3795 | { IFF_BROADCAST, "broadcast" }, | |
3796 | #endif | |
3797 | #ifdef IFF_DEBUG | |
3798 | { IFF_DEBUG, "debug" }, | |
3799 | #endif | |
3800 | #ifdef IFF_LOOPBACK | |
3801 | { IFF_LOOPBACK, "loopback" }, | |
3802 | #endif | |
3803 | #ifdef IFF_POINTOPOINT | |
3804 | { IFF_POINTOPOINT, "pointopoint" }, | |
3805 | #endif | |
3806 | #ifdef IFF_RUNNING | |
3807 | { IFF_RUNNING, "running" }, | |
3808 | #endif | |
3809 | #ifdef IFF_NOARP | |
3810 | { IFF_NOARP, "noarp" }, | |
3811 | #endif | |
3812 | #ifdef IFF_PROMISC | |
3813 | { IFF_PROMISC, "promisc" }, | |
3814 | #endif | |
3815 | #ifdef IFF_NOTRAILERS | |
3816 | { IFF_NOTRAILERS, "notrailers" }, | |
3817 | #endif | |
3818 | #ifdef IFF_ALLMULTI | |
3819 | { IFF_ALLMULTI, "allmulti" }, | |
3820 | #endif | |
3821 | #ifdef IFF_MASTER | |
3822 | { IFF_MASTER, "master" }, | |
3823 | #endif | |
3824 | #ifdef IFF_SLAVE | |
3825 | { IFF_SLAVE, "slave" }, | |
3826 | #endif | |
3827 | #ifdef IFF_MULTICAST | |
3828 | { IFF_MULTICAST, "multicast" }, | |
3829 | #endif | |
3830 | #ifdef IFF_PORTSEL | |
3831 | { IFF_PORTSEL, "portsel" }, | |
3832 | #endif | |
3833 | #ifdef IFF_AUTOMEDIA | |
3834 | { IFF_AUTOMEDIA, "automedia" }, | |
3835 | #endif | |
3836 | #ifdef IFF_DYNAMIC | |
3837 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 | 3838 | #endif |
2026418c YM |
3839 | #ifdef IFF_OACTIVE |
3840 | { IFF_OACTIVE, "oactive" }, /* OpenBSD: transmission in progress */ | |
e1652a86 KS |
3841 | #endif |
3842 | #ifdef IFF_SIMPLEX | |
3843 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3844 | #endif | |
3845 | #ifdef IFF_LINK0 | |
3846 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3847 | #endif | |
3848 | #ifdef IFF_LINK1 | |
3849 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3850 | #endif | |
3851 | #ifdef IFF_LINK2 | |
3852 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
6b61353c KH |
3853 | #endif |
3854 | { 0, 0 } | |
3855 | }; | |
3856 | ||
3857 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, | |
3858 | doc: /* Return information about network interface named IFNAME. | |
3859 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3860 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3861 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3862 | FLAGS is the current flags of the interface. */) | |
5842a27b | 3863 | (Lisp_Object ifname) |
6b61353c KH |
3864 | { |
3865 | struct ifreq rq; | |
3866 | Lisp_Object res = Qnil; | |
3867 | Lisp_Object elt; | |
3868 | int s; | |
3869 | int any = 0; | |
3870 | ||
3871 | CHECK_STRING (ifname); | |
3872 | ||
72af86bd | 3873 | memset (rq.ifr_name, 0, sizeof rq.ifr_name); |
6b61353c KH |
3874 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); |
3875 | ||
3876 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3877 | if (s < 0) | |
3878 | return Qnil; | |
3879 | ||
3880 | elt = Qnil; | |
3881 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) | |
3882 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) | |
3883 | { | |
3884 | int flags = rq.ifr_flags; | |
91433552 | 3885 | const struct ifflag_def *fp; |
6b61353c KH |
3886 | int fnum; |
3887 | ||
3888 | any++; | |
82a80058 | 3889 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
6b61353c KH |
3890 | { |
3891 | if (flags & fp->flag_bit) | |
3892 | { | |
3893 | elt = Fcons (intern (fp->flag_sym), elt); | |
3894 | flags -= fp->flag_bit; | |
3895 | } | |
3896 | } | |
3897 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3898 | { | |
3899 | if (flags & (1 << fnum)) | |
3900 | { | |
3901 | elt = Fcons (make_number (fnum), elt); | |
3902 | } | |
3903 | } | |
3904 | } | |
3905 | #endif | |
3906 | res = Fcons (elt, res); | |
3907 | ||
3908 | elt = Qnil; | |
3909 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) | |
3910 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) | |
3911 | { | |
3912 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); | |
3913 | register struct Lisp_Vector *p = XVECTOR (hwaddr); | |
3914 | int n; | |
3915 | ||
3916 | any++; | |
3917 | for (n = 0; n < 6; n++) | |
3918 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
3919 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); | |
3920 | } | |
3921 | #endif | |
3922 | res = Fcons (elt, res); | |
3923 | ||
3924 | elt = Qnil; | |
2026418c | 3925 | #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR)) |
6b61353c KH |
3926 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3927 | { | |
3928 | any++; | |
2026418c | 3929 | #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK |
6b61353c | 3930 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); |
2026418c YM |
3931 | #else |
3932 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3933 | #endif | |
6b61353c KH |
3934 | } |
3935 | #endif | |
3936 | res = Fcons (elt, res); | |
3937 | ||
3938 | elt = Qnil; | |
3939 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) | |
3940 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) | |
3941 | { | |
3942 | any++; | |
3943 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3944 | } | |
3945 | #endif | |
3946 | res = Fcons (elt, res); | |
3947 | ||
3948 | elt = Qnil; | |
3949 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) | |
3950 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) | |
3951 | { | |
3952 | any++; | |
3953 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3954 | } | |
3955 | #endif | |
3956 | res = Fcons (elt, res); | |
3957 | ||
3958 | close (s); | |
3959 | ||
3960 | return any ? res : Qnil; | |
3961 | } | |
3962 | #endif | |
fce70521 | 3963 | #endif /* defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) */ |
6b61353c | 3964 | |
04391069 RS |
3965 | /* Turn off input and output for process PROC. */ |
3966 | ||
6b53bb85 | 3967 | void |
d3da34e0 | 3968 | deactivate_process (Lisp_Object proc) |
d0d6b7c5 JB |
3969 | { |
3970 | register int inchannel, outchannel; | |
3971 | register struct Lisp_Process *p = XPROCESS (proc); | |
3972 | ||
60f0fb11 SM |
3973 | inchannel = p->infd; |
3974 | outchannel = p->outfd; | |
d0d6b7c5 | 3975 | |
6b61353c | 3976 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 3977 | if (p->read_output_delay > 0) |
6b61353c KH |
3978 | { |
3979 | if (--process_output_delay_count < 0) | |
3980 | process_output_delay_count = 0; | |
60f0fb11 SM |
3981 | p->read_output_delay = 0; |
3982 | p->read_output_skip = 0; | |
6b61353c KH |
3983 | } |
3984 | #endif | |
f3d9532b | 3985 | |
a9f2c884 | 3986 | if (inchannel >= 0) |
d0d6b7c5 JB |
3987 | { |
3988 | /* Beware SIGCHLD hereabouts. */ | |
3989 | flush_pending_output (inchannel); | |
68c45bf0 | 3990 | emacs_close (inchannel); |
a9f2c884 | 3991 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3992 | emacs_close (outchannel); |
d0d6b7c5 | 3993 | |
60f0fb11 SM |
3994 | p->infd = -1; |
3995 | p->outfd = -1; | |
e690ca94 KS |
3996 | #ifdef DATAGRAM_SOCKETS |
3997 | if (DATAGRAM_CHAN_P (inchannel)) | |
3998 | { | |
3999 | xfree (datagram_address[inchannel].sa); | |
4000 | datagram_address[inchannel].sa = 0; | |
4001 | datagram_address[inchannel].len = 0; | |
4002 | } | |
4003 | #endif | |
d0d6b7c5 JB |
4004 | chan_process[inchannel] = Qnil; |
4005 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 4006 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 4007 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4008 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
4009 | { | |
4010 | FD_CLR (inchannel, &connect_wait_mask); | |
4011 | if (--num_pending_connects < 0) | |
4012 | abort (); | |
4013 | } | |
bad49fc7 | 4014 | #endif |
7d0e672e RS |
4015 | if (inchannel == max_process_desc) |
4016 | { | |
4017 | int i; | |
4018 | /* We just closed the highest-numbered process input descriptor, | |
4019 | so recompute the highest-numbered one now. */ | |
4020 | max_process_desc = 0; | |
4021 | for (i = 0; i < MAXDESC; i++) | |
4022 | if (!NILP (chan_process[i])) | |
4023 | max_process_desc = i; | |
4024 | } | |
d0d6b7c5 JB |
4025 | } |
4026 | } | |
4027 | ||
d0d6b7c5 JB |
4028 | \f |
4029 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 4030 | 0, 4, 0, |
fdb82f93 PJ |
4031 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
4032 | It is read into the process' buffers or given to their filter functions. | |
4033 | Non-nil arg PROCESS means do not return until some output has been received | |
4034 | from PROCESS. | |
5088da42 | 4035 | |
2a7bb882 MR |
4036 | Non-nil second arg SECONDS and third arg MILLISEC are number of seconds |
4037 | and milliseconds to wait; return after that much time whether or not | |
4038 | there is any subprocess output. If SECONDS is a floating point number, | |
5088da42 | 4039 | it specifies a fractional number of seconds to wait. |
891bd142 | 4040 | The MILLISEC argument is obsolete and should be avoided. |
5088da42 | 4041 | |
107ed38d KS |
4042 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
4043 | from PROCESS, suspending reading output from other processes. | |
4044 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
e0f24100 | 4045 | Return non-nil if we received any output before the timeout expired. */) |
5842a27b | 4046 | (register Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec, Lisp_Object just_this_one) |
d0d6b7c5 | 4047 | { |
5088da42 | 4048 | int secs, usecs = 0; |
d0d6b7c5 | 4049 | |
0748d150 | 4050 | if (! NILP (process)) |
b7826503 | 4051 | CHECK_PROCESS (process); |
107ed38d KS |
4052 | else |
4053 | just_this_one = Qnil; | |
0748d150 | 4054 | |
891bd142 SM |
4055 | if (!NILP (millisec)) |
4056 | { /* Obsolete calling convention using integers rather than floats. */ | |
4057 | CHECK_NUMBER (millisec); | |
4058 | if (NILP (seconds)) | |
4059 | seconds = make_float (XINT (millisec) / 1000.0); | |
4060 | else | |
4061 | { | |
4062 | CHECK_NUMBER (seconds); | |
4063 | seconds = make_float (XINT (millisec) / 1000.0 + XINT (seconds)); | |
4064 | } | |
4065 | } | |
4066 | ||
5088da42 | 4067 | if (!NILP (seconds)) |
d0d6b7c5 | 4068 | { |
5088da42 KS |
4069 | if (INTEGERP (seconds)) |
4070 | secs = XINT (seconds); | |
4071 | else if (FLOATP (seconds)) | |
4072 | { | |
4073 | double timeout = XFLOAT_DATA (seconds); | |
4074 | secs = (int) timeout; | |
4075 | usecs = (int) ((timeout - (double) secs) * 1000000); | |
4076 | } | |
4077 | else | |
4078 | wrong_type_argument (Qnumberp, seconds); | |
d0d6b7c5 | 4079 | |
5088da42 KS |
4080 | if (secs < 0 || (secs == 0 && usecs == 0)) |
4081 | secs = -1, usecs = 0; | |
d0d6b7c5 JB |
4082 | } |
4083 | else | |
5088da42 | 4084 | secs = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
4085 | |
4086 | return | |
5088da42 | 4087 | (wait_reading_process_output (secs, usecs, 0, 0, |
214d6069 KS |
4088 | Qnil, |
4089 | !NILP (process) ? XPROCESS (process) : NULL, | |
4090 | NILP (just_this_one) ? 0 : | |
4091 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
4092 | ? Qt : Qnil); |
4093 | } | |
4094 | ||
e690ca94 KS |
4095 | /* Accept a connection for server process SERVER on CHANNEL. */ |
4096 | ||
4097 | static int connect_counter = 0; | |
4098 | ||
4099 | static void | |
d3da34e0 | 4100 | server_accept_connection (Lisp_Object server, int channel) |
e690ca94 KS |
4101 | { |
4102 | Lisp_Object proc, caller, name, buffer; | |
4103 | Lisp_Object contact, host, service; | |
4104 | struct Lisp_Process *ps= XPROCESS (server); | |
4105 | struct Lisp_Process *p; | |
4106 | int s; | |
4107 | union u_sockaddr { | |
4108 | struct sockaddr sa; | |
4109 | struct sockaddr_in in; | |
e1652a86 KS |
4110 | #ifdef AF_INET6 |
4111 | struct sockaddr_in6 in6; | |
4112 | #endif | |
e690ca94 KS |
4113 | #ifdef HAVE_LOCAL_SOCKETS |
4114 | struct sockaddr_un un; | |
4115 | #endif | |
4116 | } saddr; | |
4117 | int len = sizeof saddr; | |
4118 | ||
4119 | s = accept (channel, &saddr.sa, &len); | |
4120 | ||
4121 | if (s < 0) | |
4122 | { | |
4123 | int code = errno; | |
4124 | ||
4125 | if (code == EAGAIN) | |
4126 | return; | |
4127 | #ifdef EWOULDBLOCK | |
4128 | if (code == EWOULDBLOCK) | |
4129 | return; | |
4130 | #endif | |
4131 | ||
4132 | if (!NILP (ps->log)) | |
4133 | call3 (ps->log, server, Qnil, | |
4134 | concat3 (build_string ("accept failed with code"), | |
4135 | Fnumber_to_string (make_number (code)), | |
4136 | build_string ("\n"))); | |
4137 | return; | |
4138 | } | |
4139 | ||
4140 | connect_counter++; | |
4141 | ||
4142 | /* Setup a new process to handle the connection. */ | |
4143 | ||
4144 | /* Generate a unique identification of the caller, and build contact | |
4145 | information for this process. */ | |
4146 | host = Qt; | |
4147 | service = Qnil; | |
4148 | switch (saddr.sa.sa_family) | |
4149 | { | |
4150 | case AF_INET: | |
4151 | { | |
4152 | Lisp_Object args[5]; | |
4153 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
4154 | args[0] = build_string ("%d.%d.%d.%d"); | |
4155 | args[1] = make_number (*ip++); | |
4156 | args[2] = make_number (*ip++); | |
4157 | args[3] = make_number (*ip++); | |
4158 | args[4] = make_number (*ip++); | |
4159 | host = Fformat (5, args); | |
4160 | service = make_number (ntohs (saddr.in.sin_port)); | |
4161 | ||
4162 | args[0] = build_string (" <%s:%d>"); | |
4163 | args[1] = host; | |
4164 | args[2] = service; | |
4165 | caller = Fformat (3, args); | |
4166 | } | |
4167 | break; | |
4168 | ||
e1652a86 KS |
4169 | #ifdef AF_INET6 |
4170 | case AF_INET6: | |
4171 | { | |
4172 | Lisp_Object args[9]; | |
4173 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
4174 | int i; | |
4175 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
4176 | for (i = 0; i < 8; i++) | |
ed3751c8 | 4177 | args[i+1] = make_number (ntohs (ip6[i])); |
e1652a86 KS |
4178 | host = Fformat (9, args); |
4179 | service = make_number (ntohs (saddr.in.sin_port)); | |
4180 | ||
4181 | args[0] = build_string (" <[%s]:%d>"); | |
4182 | args[1] = host; | |
4183 | args[2] = service; | |
4184 | caller = Fformat (3, args); | |
4185 | } | |
4186 | break; | |
4187 | #endif | |
4188 | ||
e690ca94 KS |
4189 | #ifdef HAVE_LOCAL_SOCKETS |
4190 | case AF_LOCAL: | |
4191 | #endif | |
4192 | default: | |
4193 | caller = Fnumber_to_string (make_number (connect_counter)); | |
eef60308 | 4194 | caller = concat3 (build_string (" <"), caller, build_string (">")); |
e690ca94 KS |
4195 | break; |
4196 | } | |
4197 | ||
4198 | /* Create a new buffer name for this process if it doesn't have a | |
4199 | filter. The new buffer name is based on the buffer name or | |
4200 | process name of the server process concatenated with the caller | |
4201 | identification. */ | |
4202 | ||
4203 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4204 | buffer = Qnil; | |
4205 | else | |
4206 | { | |
4207 | buffer = ps->buffer; | |
4208 | if (!NILP (buffer)) | |
4209 | buffer = Fbuffer_name (buffer); | |
4210 | else | |
4211 | buffer = ps->name; | |
4212 | if (!NILP (buffer)) | |
4213 | { | |
4214 | buffer = concat2 (buffer, caller); | |
4215 | buffer = Fget_buffer_create (buffer); | |
4216 | } | |
4217 | } | |
4218 | ||
4219 | /* Generate a unique name for the new server process. Combine the | |
4220 | server process name with the caller identification. */ | |
4221 | ||
4222 | name = concat2 (ps->name, caller); | |
4223 | proc = make_process (name); | |
4224 | ||
4225 | chan_process[s] = proc; | |
4226 | ||
4227 | #ifdef O_NONBLOCK | |
4228 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4229 | #else | |
4230 | #ifdef O_NDELAY | |
4231 | fcntl (s, F_SETFL, O_NDELAY); | |
4232 | #endif | |
4233 | #endif | |
4234 | ||
4235 | p = XPROCESS (proc); | |
4236 | ||
4237 | /* Build new contact information for this setup. */ | |
4238 | contact = Fcopy_sequence (ps->childp); | |
4239 | contact = Fplist_put (contact, QCserver, Qnil); | |
4240 | contact = Fplist_put (contact, QChost, host); | |
4241 | if (!NILP (service)) | |
4242 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4243 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4244 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4245 | #ifdef HAVE_GETSOCKNAME | |
4246 | len = sizeof saddr; | |
2185db04 | 4247 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4248 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4249 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4250 | #endif | |
4251 | ||
4252 | p->childp = contact; | |
faa7db08 | 4253 | p->plist = Fcopy_sequence (ps->plist); |
d888760c | 4254 | p->type = Qnetwork; |
ac4a7584 | 4255 | |
e690ca94 KS |
4256 | p->buffer = buffer; |
4257 | p->sentinel = ps->sentinel; | |
4258 | p->filter = ps->filter; | |
4259 | p->command = Qnil; | |
6bfd98e7 | 4260 | p->pid = 0; |
60f0fb11 SM |
4261 | p->infd = s; |
4262 | p->outfd = s; | |
e690ca94 KS |
4263 | p->status = Qrun; |
4264 | ||
4265 | /* Client processes for accepted connections are not stopped initially. */ | |
4266 | if (!EQ (p->filter, Qt)) | |
4267 | { | |
4268 | FD_SET (s, &input_wait_mask); | |
4269 | FD_SET (s, &non_keyboard_wait_mask); | |
4270 | } | |
4271 | ||
4272 | if (s > max_process_desc) | |
4273 | max_process_desc = s; | |
4274 | ||
177c0ea7 | 4275 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4276 | This seems to be the proper thing to do, as the coding system |
4277 | of the new process should reflect the settings at the time the | |
4278 | server socket was opened; not the current settings. */ | |
4279 | ||
4280 | p->decode_coding_system = ps->decode_coding_system; | |
4281 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4282 | setup_process_coding_systems (proc); |
e690ca94 KS |
4283 | |
4284 | p->decoding_buf = make_uninit_string (0); | |
60f0fb11 | 4285 | p->decoding_carryover = 0; |
e690ca94 | 4286 | p->encoding_buf = make_uninit_string (0); |
e690ca94 KS |
4287 | |
4288 | p->inherit_coding_system_flag | |
60f0fb11 | 4289 | = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag); |
e690ca94 KS |
4290 | |
4291 | if (!NILP (ps->log)) | |
4292 | call3 (ps->log, server, proc, | |
4293 | concat3 (build_string ("accept from "), | |
4294 | (STRINGP (host) ? host : build_string ("-")), | |
4295 | build_string ("\n"))); | |
4296 | ||
bed9664a | 4297 | if (!NILP (p->sentinel)) |
177c0ea7 | 4298 | exec_sentinel (proc, |
e690ca94 KS |
4299 | concat3 (build_string ("open from "), |
4300 | (STRINGP (host) ? host : build_string ("-")), | |
4301 | build_string ("\n"))); | |
4302 | } | |
4303 | ||
d0d6b7c5 JB |
4304 | /* This variable is different from waiting_for_input in keyboard.c. |
4305 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4306 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4307 | for user-input when that process-filter was called. |
4308 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4309 | lisp code is being evalled. |
4310 | This is also used in record_asynch_buffer_change. | |
4311 | For that purpose, this must be 0 | |
214d6069 | 4312 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4313 | static int waiting_for_user_input_p; |
4314 | ||
2beb96f9 | 4315 | static Lisp_Object |
d3da34e0 | 4316 | wait_reading_process_output_unwind (Lisp_Object data) |
2beb96f9 KS |
4317 | { |
4318 | waiting_for_user_input_p = XINT (data); | |
4319 | return Qnil; | |
4320 | } | |
4321 | ||
c573ae8e | 4322 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4323 | static void |
d3da34e0 | 4324 | wait_reading_process_output_1 (void) |
c573ae8e RS |
4325 | { |
4326 | } | |
4327 | ||
e1e541bd | 4328 | /* Use a wrapper around select to work around a bug in gdb 5.3. |
96c834b6 | 4329 | Normally, the wrapper is optimized away by inlining. |
e1e541bd KS |
4330 | |
4331 | If emacs is stopped inside select, the gdb backtrace doesn't | |
4332 | show the function which called select, so it is practically | |
4333 | impossible to step through wait_reading_process_output. */ | |
4334 | ||
4335 | #ifndef select | |
4336 | static INLINE int | |
d3da34e0 | 4337 | select_wrapper (int n, fd_set *rfd, fd_set *wfd, fd_set *xfd, struct timeval *tmo) |
e1e541bd KS |
4338 | { |
4339 | return select (n, rfd, wfd, xfd, tmo); | |
4340 | } | |
4341 | #define select select_wrapper | |
4342 | #endif | |
4343 | ||
d0d6b7c5 JB |
4344 | /* Read and dispose of subprocess output while waiting for timeout to |
4345 | elapse and/or keyboard input to be available. | |
4346 | ||
de6fd4b9 | 4347 | TIME_LIMIT is: |
d0d6b7c5 JB |
4348 | timeout in seconds, or |
4349 | zero for no limit, or | |
4350 | -1 means gobble data immediately available but don't wait for any. | |
4351 | ||
de6fd4b9 RS |
4352 | MICROSECS is: |
4353 | an additional duration to wait, measured in microseconds. | |
4354 | If this is nonzero and time_limit is 0, then the timeout | |
4355 | consists of MICROSECS only. | |
6e4f3667 | 4356 | |
de6fd4b9 | 4357 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4358 | 0 to ignore keyboard input, or |
4359 | 1 to return when input is available, or | |
84aa3ace | 4360 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4361 | the quit handler, or |
d0d6b7c5 | 4362 | |
de6fd4b9 | 4363 | DO_DISPLAY != 0 means redisplay should be done to show subprocess |
107ed38d | 4364 | output that arrives. |
d0d6b7c5 | 4365 | |
b89a415a KS |
4366 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4367 | (and gobble terminal input into the buffer if any arrives). | |
d0d6b7c5 | 4368 | |
b89a415a | 4369 | If WAIT_PROC is specified, wait until something arrives from that |
e0f24100 | 4370 | process. The return value is true if we read some input from |
b89a415a KS |
4371 | that process. |
4372 | ||
4373 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4374 | (suspending output from other processes). A negative value | |
4375 | means don't run any timers either. | |
4376 | ||
e0f24100 | 4377 | If WAIT_PROC is specified, then the function returns true if we |
b89a415a | 4378 | received input from that process before the timeout elapsed. |
e0f24100 | 4379 | Otherwise, return true if we received input from any process. */ |
d0d6b7c5 | 4380 | |
dfcf069d | 4381 | int |
d5a3eaaf AS |
4382 | wait_reading_process_output (int time_limit, int microsecs, int read_kbd, |
4383 | int do_display, | |
4384 | Lisp_Object wait_for_cell, | |
4385 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 4386 | { |
41d03b9a | 4387 | register int channel, nfds; |
855448dc | 4388 | SELECT_TYPE Available; |
bad49fc7 | 4389 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4390 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4391 | int check_connect; |
4392 | #endif | |
4393 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4394 | int xerrno; |
4395 | Lisp_Object proc; | |
41d03b9a | 4396 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4397 | int wait_channel = -1; |
d0d6b7c5 | 4398 | int got_some_input = 0; |
2beb96f9 | 4399 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
4400 | |
4401 | FD_ZERO (&Available); | |
bad49fc7 | 4402 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4403 | FD_ZERO (&Connecting); |
bad49fc7 | 4404 | #endif |
d0d6b7c5 | 4405 | |
283357a7 | 4406 | if (time_limit == 0 && microsecs == 0 && wait_proc && !NILP (Vinhibit_quit) |
2b0a91e7 SM |
4407 | && !(CONSP (wait_proc->status) && EQ (XCAR (wait_proc->status), Qexit))) |
4408 | message ("Blocking call to accept-process-output with quit inhibited!!"); | |
4409 | ||
b89a415a KS |
4410 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4411 | if (wait_proc != NULL) | |
60f0fb11 | 4412 | wait_channel = wait_proc->infd; |
84aa3ace | 4413 | |
2beb96f9 KS |
4414 | record_unwind_protect (wait_reading_process_output_unwind, |
4415 | make_number (waiting_for_user_input_p)); | |
b89a415a | 4416 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4417 | |
4418 | /* Since we may need to wait several times, | |
4419 | compute the absolute time to return at. */ | |
4420 | if (time_limit || microsecs) | |
4421 | { | |
4422 | EMACS_GET_TIME (end_time); | |
4423 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4424 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4425 | } | |
4426 | ||
d0d6b7c5 JB |
4427 | while (1) |
4428 | { | |
c0239a0b RS |
4429 | int timeout_reduced_for_timers = 0; |
4430 | ||
d0d6b7c5 JB |
4431 | /* If calling from keyboard input, do not quit |
4432 | since we want to return C-g as an input character. | |
4433 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4434 | if (read_kbd >= 0) |
d0d6b7c5 | 4435 | QUIT; |
6b61353c | 4436 | #ifdef SYNC_INPUT |
ef5eb925 | 4437 | else |
c3eff1b0 | 4438 | process_pending_signals (); |
6b61353c | 4439 | #endif |
d0d6b7c5 | 4440 | |
889255b4 | 4441 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4442 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4443 | break; |
4444 | ||
d0d6b7c5 JB |
4445 | /* Compute time from now till when time limit is up */ |
4446 | /* Exit if already run out */ | |
4447 | if (time_limit == -1) | |
4448 | { | |
4449 | /* -1 specified for timeout means | |
4450 | gobble output available now | |
4451 | but don't wait at all. */ | |
4452 | ||
4453 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4454 | } | |
4455 | else if (time_limit || microsecs) | |
4456 | { | |
4457 | EMACS_GET_TIME (timeout); | |
4458 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4459 | if (EMACS_TIME_NEG_P (timeout)) | |
4460 | break; | |
4461 | } | |
4462 | else | |
4463 | { | |
4464 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4465 | } | |
4466 | ||
f854a00b RS |
4467 | /* Normally we run timers here. |
4468 | But not if wait_for_cell; in those cases, | |
4469 | the wait is supposed to be short, | |
4470 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4471 | if (NILP (wait_for_cell) |
b89a415a | 4472 | && just_wait_proc >= 0) |
fb4c3627 | 4473 | { |
c0239a0b | 4474 | EMACS_TIME timer_delay; |
c573ae8e | 4475 | |
9baacf76 | 4476 | do |
c573ae8e | 4477 | { |
9baacf76 | 4478 | int old_timers_run = timers_run; |
c88164fe | 4479 | struct buffer *old_buffer = current_buffer; |
70bb1e5f | 4480 | Lisp_Object old_window = selected_window; |
177c0ea7 | 4481 | |
9baacf76 | 4482 | timer_delay = timer_check (1); |
a2fab450 GM |
4483 | |
4484 | /* If a timer has run, this might have changed buffers | |
4485 | an alike. Make read_key_sequence aware of that. */ | |
4486 | if (timers_run != old_timers_run | |
70bb1e5f CY |
4487 | && (old_buffer != current_buffer |
4488 | || !EQ (old_window, selected_window)) | |
a2fab450 GM |
4489 | && waiting_for_user_input_p == -1) |
4490 | record_asynch_buffer_change (); | |
177c0ea7 | 4491 | |
9baacf76 GM |
4492 | if (timers_run != old_timers_run && do_display) |
4493 | /* We must retry, since a timer may have requeued itself | |
4494 | and that could alter the time_delay. */ | |
3007ebfb | 4495 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4496 | else |
4497 | break; | |
c573ae8e | 4498 | } |
9baacf76 | 4499 | while (!detect_input_pending ()); |
c573ae8e | 4500 | |
69645afc | 4501 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4502 | if (read_kbd != 0 |
69645afc RS |
4503 | && requeued_events_pending_p ()) |
4504 | break; | |
4505 | ||
c0239a0b | 4506 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4507 | { |
4508 | EMACS_TIME difference; | |
4509 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4510 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4511 | { |
4512 | timeout = timer_delay; | |
4513 | timeout_reduced_for_timers = 1; | |
4514 | } | |
fb4c3627 | 4515 | } |
4abca5e7 RS |
4516 | /* If time_limit is -1, we are not going to wait at all. */ |
4517 | else if (time_limit != -1) | |
c573ae8e RS |
4518 | { |
4519 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4520 | wait_reading_process_output_1 (); |
c573ae8e | 4521 | } |
fb4c3627 RS |
4522 | } |
4523 | ||
90ab1a81 JB |
4524 | /* Cause C-g and alarm signals to take immediate action, |
4525 | and cause input available signals to zero out timeout. | |
4526 | ||
4527 | It is important that we do this before checking for process | |
4528 | activity. If we get a SIGCHLD after the explicit checks for | |
4529 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4530 | if (read_kbd < 0) |
90ab1a81 JB |
4531 | set_waiting_for_input (&timeout); |
4532 | ||
6be429b1 JB |
4533 | /* If status of something has changed, and no input is |
4534 | available, notify the user of the change right away. After | |
4535 | this explicit check, we'll let the SIGCHLD handler zap | |
e42bdf01 CY |
4536 | timeout to get our attention. */ |
4537 | if (update_tick != process_tick) | |
6be429b1 | 4538 | { |
bad49fc7 KS |
4539 | SELECT_TYPE Atemp; |
4540 | #ifdef NON_BLOCKING_CONNECT | |
4541 | SELECT_TYPE Ctemp; | |
4542 | #endif | |
dd2a17ab | 4543 | |
cb768704 J |
4544 | if (kbd_on_hold_p ()) |
4545 | FD_ZERO (&Atemp); | |
4546 | else | |
4547 | Atemp = input_wait_mask; | |
bad49fc7 KS |
4548 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4549 | ||
6be429b1 | 4550 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
994d9841 NR |
4551 | if ((select (max (max (max_process_desc, max_keyboard_desc), |
4552 | max_gpm_desc) + 1, | |
177c0ea7 | 4553 | &Atemp, |
bad49fc7 | 4554 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4555 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4556 | #else |
4557 | (SELECT_TYPE *)0, | |
4558 | #endif | |
dd2a17ab | 4559 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4560 | <= 0)) |
90ab1a81 JB |
4561 | { |
4562 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4563 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4564 | clear_waiting_for_input (); |
ff6daed3 | 4565 | status_notify (NULL); |
e42bdf01 | 4566 | if (do_display) redisplay_preserve_echo_area (13); |
90ab1a81 | 4567 | } |
6be429b1 JB |
4568 | } |
4569 | ||
dd2a17ab | 4570 | /* Don't wait for output from a non-running process. Just |
63136da6 | 4571 | read whatever data has already been received. */ |
6bfd98e7 | 4572 | if (wait_proc && wait_proc->raw_status_new) |
6be429b1 | 4573 | update_status (wait_proc); |
6bfd98e7 | 4574 | if (wait_proc |
dd2a17ab KS |
4575 | && ! EQ (wait_proc->status, Qrun) |
4576 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4577 | { |
215b45e9 | 4578 | int nread, total_nread = 0; |
7ce63188 | 4579 | |
9aa2a7f4 | 4580 | clear_waiting_for_input (); |
7ce63188 RS |
4581 | XSETPROCESS (proc, wait_proc); |
4582 | ||
4583 | /* Read data from the process, until we exhaust it. */ | |
60f0fb11 | 4584 | while (wait_proc->infd >= 0) |
215b45e9 | 4585 | { |
60f0fb11 | 4586 | nread = read_process_output (proc, wait_proc->infd); |
e1b37c34 GM |
4587 | |
4588 | if (nread == 0) | |
4589 | break; | |
4590 | ||
63136da6 AS |
4591 | if (0 < nread) |
4592 | { | |
891bd142 SM |
4593 | total_nread += nread; |
4594 | got_some_input = 1; | |
4595 | } | |
215b45e9 RS |
4596 | #ifdef EIO |
4597 | else if (nread == -1 && EIO == errno) | |
63136da6 | 4598 | break; |
e1b37c34 GM |
4599 | #endif |
4600 | #ifdef EAGAIN | |
4601 | else if (nread == -1 && EAGAIN == errno) | |
63136da6 | 4602 | break; |
e1b37c34 GM |
4603 | #endif |
4604 | #ifdef EWOULDBLOCK | |
4605 | else if (nread == -1 && EWOULDBLOCK == errno) | |
63136da6 | 4606 | break; |
215b45e9 RS |
4607 | #endif |
4608 | } | |
7ce63188 | 4609 | if (total_nread > 0 && do_display) |
3007ebfb | 4610 | redisplay_preserve_echo_area (10); |
7ce63188 | 4611 | |
9aa2a7f4 JB |
4612 | break; |
4613 | } | |
6be429b1 | 4614 | |
d0d6b7c5 JB |
4615 | /* Wait till there is something to do */ |
4616 | ||
b89a415a | 4617 | if (wait_proc && just_wait_proc) |
107ed38d | 4618 | { |
60f0fb11 | 4619 | if (wait_proc->infd < 0) /* Terminated */ |
b89a415a | 4620 | break; |
60f0fb11 | 4621 | FD_SET (wait_proc->infd, &Available); |
bad49fc7 KS |
4622 | check_delay = 0; |
4623 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4624 | } |
4625 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4626 | { |
4627 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4628 | check_delay = 0; |
4629 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4630 | } |
a69281ff | 4631 | else |
dd2a17ab | 4632 | { |
b89a415a | 4633 | if (! read_kbd) |
dd2a17ab KS |
4634 | Available = non_keyboard_wait_mask; |
4635 | else | |
4636 | Available = input_wait_mask; | |
bad49fc7 | 4637 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
6b61353c | 4638 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4639 | } |
d0d6b7c5 | 4640 | |
ff11dfa1 | 4641 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4642 | redisplay now, before we start to wait. There is a race |
4643 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4644 | and indicates that a frame is trashed, the select may block |
4645 | displaying a trashed screen. */ | |
5164ee8e | 4646 | if (frame_garbaged && do_display) |
7286affd RS |
4647 | { |
4648 | clear_waiting_for_input (); | |
3007ebfb | 4649 | redisplay_preserve_echo_area (11); |
b89a415a | 4650 | if (read_kbd < 0) |
7efe788e | 4651 | set_waiting_for_input (&timeout); |
7286affd | 4652 | } |
ffd56f97 | 4653 | |
dd2a17ab | 4654 | no_avail = 0; |
b89a415a | 4655 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4656 | { |
4657 | nfds = 0; | |
dd2a17ab | 4658 | no_avail = 1; |
0a65b032 RS |
4659 | } |
4660 | else | |
dd2a17ab | 4661 | { |
bad49fc7 | 4662 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4663 | if (check_connect) |
4664 | Connecting = connect_wait_mask; | |
bad49fc7 | 4665 | #endif |
6b61353c KH |
4666 | |
4667 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a | 4668 | /* Set the timeout for adaptive read buffering if any |
60f0fb11 | 4669 | process has non-zero read_output_skip and non-zero |
db853b7a KS |
4670 | read_output_delay, and we are not reading output for a |
4671 | specific wait_channel. It is not executed if | |
4672 | Vprocess_adaptive_read_buffering is nil. */ | |
6b61353c KH |
4673 | if (process_output_skip && check_delay > 0) |
4674 | { | |
4675 | int usecs = EMACS_USECS (timeout); | |
4676 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4677 | usecs = READ_OUTPUT_DELAY_MAX; | |
4678 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4679 | { | |
4680 | proc = chan_process[channel]; | |
4681 | if (NILP (proc)) | |
4682 | continue; | |
db853b7a | 4683 | /* Find minimum non-zero read_output_delay among the |
60f0fb11 SM |
4684 | processes with non-zero read_output_skip. */ |
4685 | if (XPROCESS (proc)->read_output_delay > 0) | |
6b61353c KH |
4686 | { |
4687 | check_delay--; | |
60f0fb11 | 4688 | if (!XPROCESS (proc)->read_output_skip) |
6b61353c KH |
4689 | continue; |
4690 | FD_CLR (channel, &Available); | |
60f0fb11 SM |
4691 | XPROCESS (proc)->read_output_skip = 0; |
4692 | if (XPROCESS (proc)->read_output_delay < usecs) | |
4693 | usecs = XPROCESS (proc)->read_output_delay; | |
6b61353c KH |
4694 | } |
4695 | } | |
4696 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4697 | process_output_skip = 0; | |
4698 | } | |
4699 | #endif | |
872870b2 JD |
4700 | #if defined (USE_GTK) || defined (HAVE_GCONF) |
4701 | nfds = xg_select | |
4702 | #elif defined (HAVE_NS) | |
63136da6 | 4703 | nfds = ns_select |
edfda783 | 4704 | #else |
63136da6 | 4705 | nfds = select |
edfda783 | 4706 | #endif |
63136da6 | 4707 | (max (max (max_process_desc, max_keyboard_desc), |
994d9841 | 4708 | max_gpm_desc) + 1, |
177c0ea7 | 4709 | &Available, |
bad49fc7 | 4710 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4711 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4712 | #else |
4713 | (SELECT_TYPE *)0, | |
4714 | #endif | |
dd2a17ab KS |
4715 | (SELECT_TYPE *)0, &timeout); |
4716 | } | |
6720a7fb | 4717 | |
d0d6b7c5 JB |
4718 | xerrno = errno; |
4719 | ||
4720 | /* Make C-g and alarm signals set flags again */ | |
4721 | clear_waiting_for_input (); | |
4722 | ||
4723 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4724 | do_pending_window_change (0); |
d0d6b7c5 | 4725 | |
c0239a0b RS |
4726 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4727 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4728 | break; |
4729 | if (nfds < 0) | |
4730 | { | |
4731 | if (xerrno == EINTR) | |
dd2a17ab | 4732 | no_avail = 1; |
d0d6b7c5 JB |
4733 | else if (xerrno == EBADF) |
4734 | { | |
4735 | #ifdef AIX | |
4736 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4737 | the child's closure of the pts gives the parent a SIGHUP, and | |
4738 | the ptc file descriptor is automatically closed, | |
4739 | yielding EBADF here or at select() call above. | |
4740 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4741 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4742 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4743 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4744 | #else |
4745 | abort (); | |
4746 | #endif | |
4747 | } | |
4748 | else | |
68c45bf0 | 4749 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4750 | } |
dd2a17ab KS |
4751 | |
4752 | if (no_avail) | |
4753 | { | |
4754 | FD_ZERO (&Available); | |
bad49fc7 | 4755 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4756 | } |
4757 | ||
5d5beb62 RS |
4758 | #if 0 /* When polling is used, interrupt_input is 0, |
4759 | so get_input_pending should read the input. | |
4760 | So this should not be needed. */ | |
4761 | /* If we are using polling for input, | |
4762 | and we see input available, make it get read now. | |
4763 | Otherwise it might not actually get read for a second. | |
214d6069 | 4764 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4765 | it might never get read at all if we don't spend much time |
214d6069 | 4766 | outside of wait_reading_process_output. */ |
b89a415a | 4767 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4768 | && keyboard_bit_set (&Available) |
4769 | && input_polling_used ()) | |
4770 | kill (getpid (), SIGALRM); | |
4771 | #endif | |
4772 | ||
d0d6b7c5 JB |
4773 | /* Check for keyboard input */ |
4774 | /* If there is any, return immediately | |
4775 | to give it higher priority than subprocesses */ | |
4776 | ||
b89a415a | 4777 | if (read_kbd != 0) |
6ed6233b | 4778 | { |
a2fab450 | 4779 | int old_timers_run = timers_run; |
c88164fe | 4780 | struct buffer *old_buffer = current_buffer; |
c0323133 | 4781 | Lisp_Object old_window = selected_window; |
a2fab450 | 4782 | int leave = 0; |
177c0ea7 | 4783 | |
5d6c2aa3 | 4784 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4785 | { |
4786 | swallow_events (do_display); | |
4787 | if (detect_input_pending_run_timers (do_display)) | |
4788 | leave = 1; | |
4789 | } | |
6ed6233b | 4790 | |
a2fab450 GM |
4791 | /* If a timer has run, this might have changed buffers |
4792 | an alike. Make read_key_sequence aware of that. */ | |
4793 | if (timers_run != old_timers_run | |
c88164fe | 4794 | && waiting_for_user_input_p == -1 |
c0323133 GM |
4795 | && (old_buffer != current_buffer |
4796 | || !EQ (old_window, selected_window))) | |
a2fab450 GM |
4797 | record_asynch_buffer_change (); |
4798 | ||
4799 | if (leave) | |
4800 | break; | |
177c0ea7 JB |
4801 | } |
4802 | ||
69645afc | 4803 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4804 | if (read_kbd != 0 |
69645afc RS |
4805 | && requeued_events_pending_p ()) |
4806 | break; | |
4807 | ||
77e1b3d4 RS |
4808 | /* If we are not checking for keyboard input now, |
4809 | do process events (but don't run any timers). | |
4810 | This is so that X events will be processed. | |
0c9960e9 | 4811 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4812 | That would causes delays in pasting selections, for example. |
4813 | ||
4814 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4815 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4816 | { |
4817 | swallow_events (do_display); | |
0c9960e9 | 4818 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4819 | if (detect_input_pending ()) |
4820 | break; | |
5d5beb62 | 4821 | #endif |
0c9960e9 | 4822 | } |
f854a00b | 4823 | |
84aa3ace | 4824 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4825 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4826 | break; |
4827 | ||
4746118a | 4828 | #ifdef SIGIO |
5d5beb62 | 4829 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4830 | go read it. This can happen with X on BSD after logging out. |
4831 | In that case, there really is no input and no SIGIO, | |
4832 | but select says there is input. */ | |
4833 | ||
b89a415a | 4834 | if (read_kbd && interrupt_input |
2601f59e | 4835 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4836 | kill (getpid (), SIGIO); |
4746118a | 4837 | #endif |
d0d6b7c5 | 4838 | |
d0d6b7c5 JB |
4839 | if (! wait_proc) |
4840 | got_some_input |= nfds > 0; | |
4841 | ||
32676c08 JB |
4842 | /* If checking input just got us a size-change event from X, |
4843 | obey it now if we should. */ | |
b89a415a | 4844 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4845 | do_pending_window_change (0); |
32676c08 | 4846 | |
a9f2c884 | 4847 | /* Check for data from a process. */ |
dd2a17ab KS |
4848 | if (no_avail || nfds == 0) |
4849 | continue; | |
4850 | ||
a9f2c884 RS |
4851 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4852 | but this is safer in the short run. */ | |
a69281ff | 4853 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4854 | { |
a69281ff RS |
4855 | if (FD_ISSET (channel, &Available) |
4856 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4857 | { |
4858 | int nread; | |
4859 | ||
4860 | /* If waiting for this channel, arrange to return as | |
4861 | soon as no more input to be processed. No more | |
4862 | waiting. */ | |
4863 | if (wait_channel == channel) | |
4864 | { | |
a9f2c884 | 4865 | wait_channel = -1; |
d0d6b7c5 JB |
4866 | time_limit = -1; |
4867 | got_some_input = 1; | |
4868 | } | |
4869 | proc = chan_process[channel]; | |
4870 | if (NILP (proc)) | |
4871 | continue; | |
4872 | ||
e690ca94 KS |
4873 | /* If this is a server stream socket, accept connection. */ |
4874 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4875 | { | |
4876 | server_accept_connection (proc, channel); | |
4877 | continue; | |
4878 | } | |
4879 | ||
d0d6b7c5 JB |
4880 | /* Read data from the process, starting with our |
4881 | buffered-ahead character if we have one. */ | |
4882 | ||
4883 | nread = read_process_output (proc, channel); | |
4884 | if (nread > 0) | |
4885 | { | |
4886 | /* Since read_process_output can run a filter, | |
4887 | which can call accept-process-output, | |
4888 | don't try to read from any other processes | |
4889 | before doing the select again. */ | |
4890 | FD_ZERO (&Available); | |
4891 | ||
4892 | if (do_display) | |
3007ebfb | 4893 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4894 | } |
4895 | #ifdef EWOULDBLOCK | |
4896 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4897 | ; | |
0b75e9a4 | 4898 | #endif |
89d7280d RS |
4899 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4900 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4901 | #ifdef O_NONBLOCK |
4902 | else if (nread == -1 && errno == EAGAIN) | |
4903 | ; | |
4904 | #else | |
4905 | #ifdef O_NDELAY | |
4906 | else if (nread == -1 && errno == EAGAIN) | |
4907 | ; | |
4908 | /* Note that we cannot distinguish between no input | |
4909 | available now and a closed pipe. | |
4910 | With luck, a closed pipe will be accompanied by | |
4911 | subprocess termination and SIGCHLD. */ | |
d888760c | 4912 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 | 4913 | ; |
4740825c KS |
4914 | #endif /* O_NDELAY */ |
4915 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4916 | #ifdef HAVE_PTYS |
4917 | /* On some OSs with ptys, when the process on one end of | |
4918 | a pty exits, the other end gets an error reading with | |
4919 | errno = EIO instead of getting an EOF (0 bytes read). | |
4920 | Therefore, if we get an error reading and errno = | |
4921 | EIO, just continue, because the child process has | |
4922 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4923 | get a SIGCHLD). |
4924 | ||
4925 | However, it has been known to happen that the SIGCHLD | |
4740825c | 4926 | got lost. So raise the signal again just in case. |
5651af6d | 4927 | It can't hurt. */ |
d0d6b7c5 | 4928 | else if (nread == -1 && errno == EIO) |
4740825c | 4929 | { |
a70d5371 | 4930 | /* Clear the descriptor now, so we only raise the |
42371deb | 4931 | signal once. Don't do this if `process' is only |
a70d5371 NR |
4932 | a pty. */ |
4933 | if (XPROCESS (proc)->pid != -2) | |
4934 | { | |
4935 | FD_CLR (channel, &input_wait_mask); | |
4936 | FD_CLR (channel, &non_keyboard_wait_mask); | |
4740825c | 4937 | |
a70d5371 NR |
4938 | kill (getpid (), SIGCHLD); |
4939 | } | |
4740825c KS |
4940 | } |
4941 | #endif /* HAVE_PTYS */ | |
ffd56f97 JB |
4942 | /* If we can detect process termination, don't consider the process |
4943 | gone just because its pipe is closed. */ | |
d0d6b7c5 | 4944 | #ifdef SIGCHLD |
d888760c | 4945 | else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc)) |
d0d6b7c5 JB |
4946 | ; |
4947 | #endif | |
4948 | else | |
4949 | { | |
4950 | /* Preserve status of processes already terminated. */ | |
60f0fb11 | 4951 | XPROCESS (proc)->tick = ++process_tick; |
d0d6b7c5 | 4952 | deactivate_process (proc); |
6bfd98e7 | 4953 | if (XPROCESS (proc)->raw_status_new) |
d0d6b7c5 JB |
4954 | update_status (XPROCESS (proc)); |
4955 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4956 | XPROCESS (proc)->status | |
4957 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4958 | } | |
4959 | } | |
177c0ea7 | 4960 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
4961 | if (check_connect && FD_ISSET (channel, &Connecting) |
4962 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
4963 | { |
4964 | struct Lisp_Process *p; | |
dd2a17ab KS |
4965 | |
4966 | FD_CLR (channel, &connect_wait_mask); | |
4967 | if (--num_pending_connects < 0) | |
4968 | abort (); | |
4969 | ||
4970 | proc = chan_process[channel]; | |
4971 | if (NILP (proc)) | |
4972 | continue; | |
4973 | ||
4974 | p = XPROCESS (proc); | |
4975 | ||
4976 | #ifdef GNU_LINUX | |
4977 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
63136da6 | 4978 | So only use it on systems where it is known to work. */ |
dd2a17ab | 4979 | { |
ed3751c8 JB |
4980 | int xlen = sizeof (xerrno); |
4981 | if (getsockopt (channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) | |
dd2a17ab KS |
4982 | xerrno = errno; |
4983 | } | |
4984 | #else | |
44c887be PJ |
4985 | { |
4986 | struct sockaddr pname; | |
ed3751c8 | 4987 | int pnamelen = sizeof (pname); |
44c887be PJ |
4988 | |
4989 | /* If connection failed, getpeername will fail. */ | |
4990 | xerrno = 0; | |
ed3751c8 | 4991 | if (getpeername (channel, &pname, &pnamelen) < 0) |
44c887be PJ |
4992 | { |
4993 | /* Obtain connect failure code through error slippage. */ | |
4994 | char dummy; | |
dd2a17ab | 4995 | xerrno = errno; |
ed3751c8 | 4996 | if (errno == ENOTCONN && read (channel, &dummy, 1) < 0) |
44c887be PJ |
4997 | xerrno = errno; |
4998 | } | |
4999 | } | |
dd2a17ab KS |
5000 | #endif |
5001 | if (xerrno) | |
5002 | { | |
60f0fb11 | 5003 | p->tick = ++process_tick; |
dd2a17ab KS |
5004 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); |
5005 | deactivate_process (proc); | |
5006 | } | |
5007 | else | |
5008 | { | |
5009 | p->status = Qrun; | |
5010 | /* Execute the sentinel here. If we had relied on | |
5011 | status_notify to do it later, it will read input | |
5012 | from the process before calling the sentinel. */ | |
5013 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 5014 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab | 5015 | { |
60f0fb11 SM |
5016 | FD_SET (p->infd, &input_wait_mask); |
5017 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
dd2a17ab KS |
5018 | } |
5019 | } | |
5020 | } | |
5021 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
5022 | } /* end for each file descriptor */ |
5023 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 5024 | |
2beb96f9 | 5025 | unbind_to (count, Qnil); |
d430ee71 | 5026 | |
ffd56f97 JB |
5027 | /* If calling from keyboard input, do not quit |
5028 | since we want to return C-g as an input character. | |
5029 | Otherwise, do pending quit if requested. */ | |
b89a415a | 5030 | if (read_kbd >= 0) |
ffd56f97 JB |
5031 | { |
5032 | /* Prevent input_pending from remaining set if we quit. */ | |
5033 | clear_input_pending (); | |
5034 | QUIT; | |
5035 | } | |
efa2a55c | 5036 | |
d0d6b7c5 JB |
5037 | return got_some_input; |
5038 | } | |
5039 | \f | |
3b9a3dfa RS |
5040 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
5041 | ||
5042 | static Lisp_Object | |
d3da34e0 | 5043 | read_process_output_call (Lisp_Object fun_and_args) |
3b9a3dfa | 5044 | { |
70949dac | 5045 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
5046 | } |
5047 | ||
5048 | static Lisp_Object | |
d3da34e0 | 5049 | read_process_output_error_handler (Lisp_Object error) |
3b9a3dfa RS |
5050 | { |
5051 | cmd_error_internal (error, "error in process filter: "); | |
5052 | Vinhibit_quit = Qt; | |
5053 | update_echo_area (); | |
833ba342 | 5054 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 5055 | return Qt; |
3b9a3dfa RS |
5056 | } |
5057 | ||
d0d6b7c5 JB |
5058 | /* Read pending output from the process channel, |
5059 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 5060 | Yield number of decoded characters read. |
d0d6b7c5 | 5061 | |
116c423c | 5062 | This function reads at most 4096 characters. |
d0d6b7c5 | 5063 | If you want to read all available subprocess output, |
0fa1789e KH |
5064 | you must call it repeatedly until it returns zero. |
5065 | ||
5066 | The characters read are decoded according to PROC's coding-system | |
5067 | for decoding. */ | |
d0d6b7c5 | 5068 | |
ff6daed3 | 5069 | static int |
d3da34e0 | 5070 | read_process_output (Lisp_Object proc, register int channel) |
d0d6b7c5 | 5071 | { |
8f924df7 | 5072 | register int nbytes; |
d0d6b7c5 | 5073 | char *chars; |
d0d6b7c5 | 5074 | register Lisp_Object outstream; |
d0d6b7c5 JB |
5075 | register struct Lisp_Process *p = XPROCESS (proc); |
5076 | register int opoint; | |
c7580538 | 5077 | struct coding_system *coding = proc_decode_coding_system[channel]; |
60f0fb11 | 5078 | int carryover = p->decoding_carryover; |
116c423c | 5079 | int readmax = 4096; |
3a4fa2f2 SM |
5080 | int count = SPECPDL_INDEX (); |
5081 | Lisp_Object odeactivate; | |
d0d6b7c5 | 5082 | |
e690ca94 | 5083 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
5084 | if (carryover) |
5085 | /* See the comment above. */ | |
72af86bd | 5086 | memcpy (chars, SDATA (p->decoding_buf), carryover); |
0fa1789e | 5087 | |
e690ca94 KS |
5088 | #ifdef DATAGRAM_SOCKETS |
5089 | /* We have a working select, so proc_buffered_char is always -1. */ | |
5090 | if (DATAGRAM_CHAN_P (channel)) | |
5091 | { | |
5092 | int len = datagram_address[channel].len; | |
39b1da20 | 5093 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
5094 | 0, datagram_address[channel].sa, &len); |
5095 | } | |
5096 | else | |
5097 | #endif | |
d0d6b7c5 | 5098 | if (proc_buffered_char[channel] < 0) |
6b61353c | 5099 | { |
39b1da20 | 5100 | nbytes = emacs_read (channel, chars + carryover, readmax); |
6b61353c | 5101 | #ifdef ADAPTIVE_READ_BUFFERING |
60f0fb11 | 5102 | if (nbytes > 0 && p->adaptive_read_buffering) |
6b61353c | 5103 | { |
60f0fb11 | 5104 | int delay = p->read_output_delay; |
6b61353c KH |
5105 | if (nbytes < 256) |
5106 | { | |
5107 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
5108 | { | |
5109 | if (delay == 0) | |
5110 | process_output_delay_count++; | |
5111 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
5112 | } | |
5113 | } | |
39b1da20 | 5114 | else if (delay > 0 && (nbytes == readmax)) |
6b61353c KH |
5115 | { |
5116 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
5117 | if (delay == 0) | |
5118 | process_output_delay_count--; | |
5119 | } | |
60f0fb11 | 5120 | p->read_output_delay = delay; |
6b61353c KH |
5121 | if (delay) |
5122 | { | |
60f0fb11 | 5123 | p->read_output_skip = 1; |
6b61353c KH |
5124 | process_output_skip = 1; |
5125 | } | |
5126 | } | |
5127 | #endif | |
5128 | } | |
d0d6b7c5 JB |
5129 | else |
5130 | { | |
ed7a4b2d | 5131 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 5132 | proc_buffered_char[channel] = -1; |
39b1da20 | 5133 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
5134 | if (nbytes < 0) |
5135 | nbytes = 1; | |
d0d6b7c5 | 5136 | else |
1d2fc612 | 5137 | nbytes = nbytes + 1; |
d0d6b7c5 | 5138 | } |
d0d6b7c5 | 5139 | |
60f0fb11 | 5140 | p->decoding_carryover = 0; |
ca65341e | 5141 | |
ed7a4b2d | 5142 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 5143 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
5144 | if (nbytes <= 0) |
5145 | { | |
5146 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
5147 | return nbytes; | |
5148 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5149 | } | |
d0d6b7c5 | 5150 | |
1d2fc612 | 5151 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 5152 | nbytes += carryover; |
0fa1789e | 5153 | |
3a4fa2f2 SM |
5154 | odeactivate = Vdeactivate_mark; |
5155 | /* There's no good reason to let process filters change the current | |
5156 | buffer, and many callers of accept-process-output, sit-for, and | |
5157 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 5158 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
3a4fa2f2 | 5159 | |
1d2fc612 | 5160 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
5161 | outstream = p->filter; |
5162 | if (!NILP (outstream)) | |
5163 | { | |
dfc21838 | 5164 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 5165 | Lisp_Object text; |
4da2f5be | 5166 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 5167 | int waiting = waiting_for_user_input_p; |
30c78175 | 5168 | |
dfc21838 RS |
5169 | /* No need to gcpro these, because all we do with them later |
5170 | is test them for EQness, and none of them should be a string. */ | |
dfc21838 RS |
5171 | XSETBUFFER (obuffer, current_buffer); |
5172 | okeymap = current_buffer->keymap; | |
30c78175 | 5173 | |
3a4fa2f2 SM |
5174 | /* We inhibit quit here instead of just catching it so that |
5175 | hitting ^G when a filter happens to be running won't screw | |
5176 | it up. */ | |
d0d6b7c5 | 5177 | specbind (Qinhibit_quit, Qt); |
6545aada | 5178 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5179 | |
4da2f5be RS |
5180 | /* In case we get recursively called, |
5181 | and we already saved the match data nonrecursively, | |
5182 | save the same match data in safely recursive fashion. */ | |
5183 | if (outer_running_asynch_code) | |
5184 | { | |
5185 | Lisp_Object tem; | |
5186 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5187 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5188 | restore_search_regs (); | |
5189 | record_unwind_save_match_data (); | |
5190 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5191 | } |
5192 | ||
5193 | /* For speed, if a search happens within this code, | |
5194 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5195 | running_asynch_code = 1; |
4da2f5be | 5196 | |
5bbf78c1 KH |
5197 | decode_coding_c_string (coding, chars, nbytes, Qt); |
5198 | text = coding->dst_object; | |
5bbf78c1 | 5199 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
ed7a4b2d | 5200 | /* A new coding system might be found. */ |
5bbf78c1 | 5201 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5202 | { |
5bbf78c1 | 5203 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d KH |
5204 | |
5205 | /* Don't call setup_coding_system for | |
5206 | proc_decode_coding_system[channel] here. It is done in | |
5207 | detect_coding called via decode_coding above. */ | |
5208 | ||
5209 | /* If a coding system for encoding is not yet decided, we set | |
5210 | it as the same as coding-system for decoding. | |
5211 | ||
5212 | But, before doing that we must check if | |
5213 | proc_encode_coding_system[p->outfd] surely points to a | |
5214 | valid memory because p->outfd will be changed once EOF is | |
5215 | sent to the process. */ | |
5216 | if (NILP (p->encode_coding_system) | |
60f0fb11 | 5217 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5218 | { |
76d812bb KH |
5219 | p->encode_coding_system |
5220 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5221 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5222 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5223 | } |
5224 | } | |
51c6067d | 5225 | |
dd8c7a53 KH |
5226 | if (coding->carryover_bytes > 0) |
5227 | { | |
04961398 KH |
5228 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5229 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5230 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5231 | coding->carryover_bytes); | |
8c406a9b | 5232 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5233 | } |
e430e5ba | 5234 | if (SBYTES (text) > 0) |
dd97db06 KH |
5235 | internal_condition_case_1 (read_process_output_call, |
5236 | Fcons (outstream, | |
5237 | Fcons (proc, Fcons (text, Qnil))), | |
5238 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5239 | read_process_output_error_handler); | |
4da2f5be RS |
5240 | |
5241 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5242 | restore_search_regs (); |
4da2f5be | 5243 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5244 | |
bbce7d72 RS |
5245 | /* Restore waiting_for_user_input_p as it was |
5246 | when we were called, in case the filter clobbered it. */ | |
5247 | waiting_for_user_input_p = waiting; | |
5248 | ||
7973cfa8 RS |
5249 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5250 | because we might have changed minor modes or other things | |
5251 | that affect key bindings. */ | |
dfc21838 RS |
5252 | if (! EQ (Fcurrent_buffer (), obuffer) |
5253 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5254 | #endif |
927e08be RS |
5255 | /* But do it only if the caller is actually going to read events. |
5256 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 5257 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
5258 | if (waiting_for_user_input_p == -1) |
5259 | record_asynch_buffer_change (); | |
d0d6b7c5 JB |
5260 | } |
5261 | ||
5262 | /* If no filter, write into buffer if it isn't dead. */ | |
3a4fa2f2 | 5263 | else if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) |
d0d6b7c5 | 5264 | { |
b0310da4 | 5265 | Lisp_Object old_read_only; |
12ca5cdf | 5266 | int old_begv, old_zv; |
d8a2934e | 5267 | int old_begv_byte, old_zv_byte; |
d8a2934e RS |
5268 | int before, before_byte; |
5269 | int opoint_byte; | |
ed7a4b2d | 5270 | Lisp_Object text; |
926b7e5e | 5271 | struct buffer *b; |
30c78175 | 5272 | |
d0d6b7c5 | 5273 | Fset_buffer (p->buffer); |
6ec8bbd2 | 5274 | opoint = PT; |
d8a2934e | 5275 | opoint_byte = PT_BYTE; |
b0310da4 | 5276 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
5277 | old_begv = BEGV; |
5278 | old_zv = ZV; | |
d8a2934e RS |
5279 | old_begv_byte = BEGV_BYTE; |
5280 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
5281 | |
5282 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
5283 | |
5284 | /* Insert new output into buffer | |
5285 | at the current end-of-output marker, | |
5286 | thus preserving logical ordering of input and output. */ | |
5287 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5288 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5289 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5290 | ZV_BYTE)); | |
d0d6b7c5 | 5291 | else |
d8a2934e | 5292 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5293 | before = PT; |
d8a2934e | 5294 | before_byte = PT_BYTE; |
b0310da4 JB |
5295 | |
5296 | /* If the output marker is outside of the visible region, save | |
5297 | the restriction and widen. */ | |
6ec8bbd2 | 5298 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5299 | Fwiden (); |
5300 | ||
5bbf78c1 KH |
5301 | decode_coding_c_string (coding, chars, nbytes, Qt); |
5302 | text = coding->dst_object; | |
5303 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); | |
ed7a4b2d KH |
5304 | /* A new coding system might be found. See the comment in the |
5305 | similar code in the previous `if' block. */ | |
5bbf78c1 | 5306 | if (!EQ (p->decode_coding_system, Vlast_coding_system_used)) |
ed7a4b2d | 5307 | { |
5bbf78c1 | 5308 | p->decode_coding_system = Vlast_coding_system_used; |
ed7a4b2d | 5309 | if (NILP (p->encode_coding_system) |
60f0fb11 | 5310 | && proc_encode_coding_system[p->outfd]) |
ed7a4b2d | 5311 | { |
76d812bb KH |
5312 | p->encode_coding_system |
5313 | = coding_inherit_eol_type (Vlast_coding_system_used, Qnil); | |
5bbf78c1 | 5314 | setup_coding_system (p->encode_coding_system, |
60f0fb11 | 5315 | proc_encode_coding_system[p->outfd]); |
ed7a4b2d KH |
5316 | } |
5317 | } | |
dd8c7a53 KH |
5318 | if (coding->carryover_bytes > 0) |
5319 | { | |
04961398 KH |
5320 | if (SCHARS (p->decoding_buf) < coding->carryover_bytes) |
5321 | p->decoding_buf = make_uninit_string (coding->carryover_bytes); | |
72af86bd AS |
5322 | memcpy (SDATA (p->decoding_buf), coding->carryover, |
5323 | coding->carryover_bytes); | |
8c406a9b | 5324 | p->decoding_carryover = coding->carryover_bytes; |
dd8c7a53 | 5325 | } |
d69864bf KH |
5326 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5327 | if (NILP (current_buffer->enable_multibyte_characters) | |
5328 | != ! STRING_MULTIBYTE (text)) | |
5329 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5330 | ? Fstring_as_unibyte (text) |
03f04413 | 5331 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5332 | /* Insert before markers in case we are inserting where |
5333 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5334 | insert_from_string_before_markers (text, 0, 0, |
5335 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5336 | |
926b7e5e GM |
5337 | /* Make sure the process marker's position is valid when the |
5338 | process buffer is changed in the signal_after_change above. | |
5339 | W3 is known to do that. */ | |
5340 | if (BUFFERP (p->buffer) | |
5341 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5342 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5343 | else | |
5344 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5345 | |
d0d6b7c5 JB |
5346 | update_mode_lines++; |
5347 | ||
12ca5cdf RS |
5348 | /* Make sure opoint and the old restrictions |
5349 | float ahead of any new text just as point would. */ | |
5350 | if (opoint >= before) | |
d8a2934e RS |
5351 | { |
5352 | opoint += PT - before; | |
5353 | opoint_byte += PT_BYTE - before_byte; | |
5354 | } | |
12ca5cdf | 5355 | if (old_begv > before) |
d8a2934e RS |
5356 | { |
5357 | old_begv += PT - before; | |
5358 | old_begv_byte += PT_BYTE - before_byte; | |
5359 | } | |
12ca5cdf | 5360 | if (old_zv >= before) |
d8a2934e RS |
5361 | { |
5362 | old_zv += PT - before; | |
5363 | old_zv_byte += PT_BYTE - before_byte; | |
5364 | } | |
12ca5cdf | 5365 | |
b0310da4 | 5366 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5367 | if (old_begv != BEGV || old_zv != ZV) |
5368 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5369 | |
30c78175 | 5370 | |
b0310da4 | 5371 | current_buffer->read_only = old_read_only; |
d8a2934e | 5372 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 | 5373 | } |
3a4fa2f2 SM |
5374 | /* Handling the process output should not deactivate the mark. */ |
5375 | Vdeactivate_mark = odeactivate; | |
5376 | ||
5377 | unbind_to (count, Qnil); | |
1d2fc612 | 5378 | return nbytes; |
d0d6b7c5 | 5379 | } |
d0d6b7c5 JB |
5380 | \f |
5381 | /* Sending data to subprocess */ | |
5382 | ||
5383 | jmp_buf send_process_frame; | |
0daad115 | 5384 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5385 | |
5386 | SIGTYPE | |
d3da34e0 | 5387 | send_process_trap (int ignore) |
d0d6b7c5 | 5388 | { |
333f1b6f | 5389 | SIGNAL_THREAD_CHECK (SIGPIPE); |
c8f44005 | 5390 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5391 | longjmp (send_process_frame, 1); |
5392 | } | |
5393 | ||
4556b700 RS |
5394 | /* Send some data to process PROC. |
5395 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5396 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5397 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5398 | |
a92e4183 KH |
5399 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5400 | for encoding before it is sent. | |
1fb0098c GM |
5401 | |
5402 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5403 | |
ff6daed3 | 5404 | static void |
8ea90aa3 | 5405 | send_process (volatile Lisp_Object proc, const unsigned char *volatile buf, |
d3da34e0 | 5406 | volatile int len, volatile Lisp_Object object) |
d0d6b7c5 | 5407 | { |
ecd1f654 | 5408 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
6b61353c | 5409 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5410 | int rv; |
0fa1789e | 5411 | struct coding_system *coding; |
347f3cd3 | 5412 | struct gcpro gcpro1; |
d2aa42f8 | 5413 | SIGTYPE (*volatile old_sigpipe) (int); |
6044e593 | 5414 | |
347f3cd3 | 5415 | GCPRO1 (object); |
d0d6b7c5 | 5416 | |
6bfd98e7 | 5417 | if (p->raw_status_new) |
6b61353c KH |
5418 | update_status (p); |
5419 | if (! EQ (p->status, Qrun)) | |
5420 | error ("Process %s not running", SDATA (p->name)); | |
60f0fb11 | 5421 | if (p->outfd < 0) |
6b61353c | 5422 | error ("Output file descriptor of %s is closed", SDATA (p->name)); |
0fa1789e | 5423 | |
60f0fb11 | 5424 | coding = proc_encode_coding_system[p->outfd]; |
5bbf78c1 | 5425 | Vlast_coding_system_used = CODING_ID_NAME (coding->id); |
486b111b | 5426 | |
ed7a4b2d KH |
5427 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5428 | || (BUFFERP (object) | |
a92e4183 KH |
5429 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5430 | || EQ (object, Qt)) | |
278bfdd6 | 5431 | { |
6b61353c | 5432 | if (!EQ (Vlast_coding_system_used, p->encode_coding_system)) |
278bfdd6 KH |
5433 | /* The coding system for encoding was changed to raw-text |
5434 | because we sent a unibyte text previously. Now we are | |
5435 | sending a multibyte text, thus we must encode it by the | |
6b61353c KH |
5436 | original coding system specified for the current process. */ |
5437 | setup_coding_system (p->encode_coding_system, coding); | |
e08bbb84 | 5438 | coding->src_multibyte = 1; |
278bfdd6 KH |
5439 | } |
5440 | else | |
5441 | { | |
a92e4183 KH |
5442 | /* For sending a unibyte text, character code conversion should |
5443 | not take place but EOL conversion should. So, setup raw-text | |
5444 | or one of the subsidiary if we have not yet done it. */ | |
5bbf78c1 | 5445 | if (CODING_REQUIRE_ENCODING (coding)) |
a92e4183 KH |
5446 | { |
5447 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5448 | { | |
5449 | /* But, before changing the coding, we must flush out data. */ | |
5450 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5451 | send_process (proc, "", 0, Qt); | |
8f924df7 | 5452 | coding->mode &= CODING_MODE_LAST_BLOCK; |
a92e4183 | 5453 | } |
5bbf78c1 KH |
5454 | setup_coding_system (raw_text_coding_system |
5455 | (Vlast_coding_system_used), | |
5456 | coding); | |
e08bbb84 | 5457 | coding->src_multibyte = 0; |
a92e4183 | 5458 | } |
278bfdd6 | 5459 | } |
a4a37e65 KH |
5460 | coding->dst_multibyte = 0; |
5461 | ||
ed7a4b2d | 5462 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e | 5463 | { |
5bbf78c1 | 5464 | coding->dst_object = Qt; |
ed7a4b2d | 5465 | if (BUFFERP (object)) |
0fa1789e | 5466 | { |
5bbf78c1 KH |
5467 | int from_byte, from, to; |
5468 | int save_pt, save_pt_byte; | |
5469 | struct buffer *cur = current_buffer; | |
5470 | ||
5471 | set_buffer_internal (XBUFFER (object)); | |
5472 | save_pt = PT, save_pt_byte = PT_BYTE; | |
5473 | ||
5474 | from_byte = PTR_BYTE_POS (buf); | |
5475 | from = BYTE_TO_CHAR (from_byte); | |
5476 | to = BYTE_TO_CHAR (from_byte + len); | |
5477 | TEMP_SET_PT_BOTH (from, from_byte); | |
5478 | encode_coding_object (coding, object, from, from_byte, | |
5479 | to, from_byte + len, Qt); | |
5480 | TEMP_SET_PT_BOTH (save_pt, save_pt_byte); | |
5481 | set_buffer_internal (cur); | |
ed7a4b2d KH |
5482 | } |
5483 | else if (STRINGP (object)) | |
5484 | { | |
550c8289 KH |
5485 | encode_coding_object (coding, object, 0, 0, SCHARS (object), |
5486 | SBYTES (object), Qt); | |
0fa1789e | 5487 | } |
5bbf78c1 | 5488 | else |
452294c2 | 5489 | { |
5bbf78c1 KH |
5490 | coding->dst_object = make_unibyte_string (buf, len); |
5491 | coding->produced = len; | |
452294c2 | 5492 | } |
ed7a4b2d | 5493 | |
e7fbaa65 | 5494 | len = coding->produced; |
347f3cd3 AS |
5495 | object = coding->dst_object; |
5496 | buf = SDATA (object); | |
0fa1789e | 5497 | } |
d0d6b7c5 | 5498 | |
4556b700 RS |
5499 | if (pty_max_bytes == 0) |
5500 | { | |
5501 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
60f0fb11 | 5502 | pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON); |
4556b700 RS |
5503 | if (pty_max_bytes < 0) |
5504 | pty_max_bytes = 250; | |
5505 | #else | |
5506 | pty_max_bytes = 250; | |
5507 | #endif | |
5508 | /* Deduct one, to leave space for the eof. */ | |
5509 | pty_max_bytes--; | |
5510 | } | |
5511 | ||
0daad115 GM |
5512 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5513 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5514 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5515 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5516 | { |
5517 | process_sent_to = proc; | |
5518 | while (len > 0) | |
5519 | { | |
5520 | int this = len; | |
93b4f699 | 5521 | |
0daad115 GM |
5522 | /* Send this batch, using one or more write calls. */ |
5523 | while (this > 0) | |
5524 | { | |
60f0fb11 | 5525 | int outfd = p->outfd; |
d2aa42f8 | 5526 | old_sigpipe = (SIGTYPE (*) (int)) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5527 | #ifdef DATAGRAM_SOCKETS |
5528 | if (DATAGRAM_CHAN_P (outfd)) | |
5529 | { | |
5530 | rv = sendto (outfd, (char *) buf, this, | |
5531 | 0, datagram_address[outfd].sa, | |
5532 | datagram_address[outfd].len); | |
5533 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5534 | { |
5535 | signal (SIGPIPE, old_sigpipe); | |
5536 | report_file_error ("sending datagram", | |
5537 | Fcons (proc, Qnil)); | |
5538 | } | |
e690ca94 KS |
5539 | } |
5540 | else | |
5541 | #endif | |
6b61353c KH |
5542 | { |
5543 | rv = emacs_write (outfd, (char *) buf, this); | |
5544 | #ifdef ADAPTIVE_READ_BUFFERING | |
60f0fb11 SM |
5545 | if (p->read_output_delay > 0 |
5546 | && p->adaptive_read_buffering == 1) | |
6b61353c | 5547 | { |
60f0fb11 | 5548 | p->read_output_delay = 0; |
6b61353c | 5549 | process_output_delay_count--; |
60f0fb11 | 5550 | p->read_output_skip = 0; |
6b61353c KH |
5551 | } |
5552 | #endif | |
5553 | } | |
0daad115 | 5554 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5555 | |
0daad115 GM |
5556 | if (rv < 0) |
5557 | { | |
5558 | if (0 | |
d0d6b7c5 | 5559 | #ifdef EWOULDBLOCK |
0daad115 | 5560 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5561 | #endif |
5562 | #ifdef EAGAIN | |
0daad115 | 5563 | || errno == EAGAIN |
d0d6b7c5 | 5564 | #endif |
0daad115 | 5565 | ) |
177c0ea7 | 5566 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5567 | that may allow the program |
5568 | to finish doing output and read more. */ | |
5569 | { | |
0daad115 | 5570 | int offset = 0; |
4556b700 | 5571 | |
3433b6bd | 5572 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5573 | /* A gross hack to work around a bug in FreeBSD. |
5574 | In the following sequence, read(2) returns | |
5575 | bogus data: | |
5576 | ||
5577 | write(2) 1022 bytes | |
5578 | write(2) 954 bytes, get EAGAIN | |
5579 | read(2) 1024 bytes in process_read_output | |
5580 | read(2) 11 bytes in process_read_output | |
5581 | ||
5582 | That is, read(2) returns more bytes than have | |
5583 | ever been written successfully. The 1033 bytes | |
5584 | read are the 1022 bytes written successfully | |
5585 | after processing (for example with CRs added if | |
5586 | the terminal is set up that way which it is | |
5587 | here). The same bytes will be seen again in a | |
5588 | later read(2), without the CRs. */ | |
177c0ea7 | 5589 | |
0daad115 GM |
5590 | if (errno == EAGAIN) |
5591 | { | |
5592 | int flags = FWRITE; | |
60f0fb11 | 5593 | ioctl (p->outfd, TIOCFLUSH, &flags); |
0daad115 | 5594 | } |
3433b6bd | 5595 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5596 | |
0daad115 GM |
5597 | /* Running filters might relocate buffers or strings. |
5598 | Arrange to relocate BUF. */ | |
347f3cd3 | 5599 | if (BUFFERP (object)) |
0daad115 GM |
5600 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5601 | else if (STRINGP (object)) | |
d5db4077 | 5602 | offset = buf - SDATA (object); |
0daad115 | 5603 | |
f3e6605c | 5604 | #ifdef EMACS_HAS_USECS |
214d6069 | 5605 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5606 | #else |
214d6069 | 5607 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5608 | #endif |
4556b700 | 5609 | |
347f3cd3 | 5610 | if (BUFFERP (object)) |
0daad115 GM |
5611 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); |
5612 | else if (STRINGP (object)) | |
d5db4077 | 5613 | buf = offset + SDATA (object); |
4556b700 | 5614 | |
0daad115 GM |
5615 | rv = 0; |
5616 | } | |
5617 | else | |
5618 | /* This is a real error. */ | |
5619 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5620 | } | |
5621 | buf += rv; | |
5622 | len -= rv; | |
5623 | this -= rv; | |
5624 | } | |
0daad115 GM |
5625 | } |
5626 | } | |
d0d6b7c5 JB |
5627 | else |
5628 | { | |
0ff69270 | 5629 | signal (SIGPIPE, old_sigpipe); |
0daad115 | 5630 | proc = process_sent_to; |
6b61353c | 5631 | p = XPROCESS (proc); |
6bfd98e7 | 5632 | p->raw_status_new = 0; |
6b61353c | 5633 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); |
60f0fb11 | 5634 | p->tick = ++process_tick; |
d0d6b7c5 | 5635 | deactivate_process (proc); |
6b61353c | 5636 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5637 | } |
6044e593 RS |
5638 | |
5639 | UNGCPRO; | |
d0d6b7c5 JB |
5640 | } |
5641 | ||
5642 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5643 | 3, 3, 0, |
5644 | doc: /* Send current contents of region as input to PROCESS. | |
5645 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5646 | nil, indicating the current buffer's process. | |
5647 | Called from program, takes three arguments, PROCESS, START and END. | |
5648 | If the region is more than 500 characters long, | |
5649 | it is sent in several bunches. This may happen even for shorter regions. | |
5650 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5651 | (Lisp_Object process, Lisp_Object start, Lisp_Object end) |
d0d6b7c5 JB |
5652 | { |
5653 | Lisp_Object proc; | |
1b234f64 | 5654 | int start1, end1; |
d0d6b7c5 JB |
5655 | |
5656 | proc = get_process (process); | |
5657 | validate_region (&start, &end); | |
1b234f64 KH |
5658 | |
5659 | if (XINT (start) < GPT && XINT (end) > GPT) | |
5660 | move_gap (XINT (start)); | |
5661 | ||
5662 | start1 = CHAR_TO_BYTE (XINT (start)); | |
5663 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5664 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
5665 | Fcurrent_buffer ()); | |
5666 | ||
d0d6b7c5 JB |
5667 | return Qnil; |
5668 | } | |
5669 | ||
5670 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5671 | 2, 2, 0, |
5672 | doc: /* Send PROCESS the contents of STRING as input. | |
5673 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5674 | nil, indicating the current buffer's process. | |
5675 | If STRING is more than 500 characters long, | |
5676 | it is sent in several bunches. This may happen even for shorter strings. | |
5677 | Output from processes can arrive in between bunches. */) | |
5842a27b | 5678 | (Lisp_Object process, Lisp_Object string) |
d0d6b7c5 JB |
5679 | { |
5680 | Lisp_Object proc; | |
b7826503 | 5681 | CHECK_STRING (string); |
d0d6b7c5 | 5682 | proc = get_process (process); |
1b234f64 KH |
5683 | send_process (proc, SDATA (string), |
5684 | SBYTES (string), string); | |
d0d6b7c5 JB |
5685 | return Qnil; |
5686 | } | |
5687 | \f | |
16782258 JD |
5688 | /* Return the foreground process group for the tty/pty that |
5689 | the process P uses. */ | |
5690 | static int | |
d3da34e0 | 5691 | emacs_get_tty_pgrp (struct Lisp_Process *p) |
16782258 JD |
5692 | { |
5693 | int gid = -1; | |
5694 | ||
f3d9532b | 5695 | #ifdef TIOCGPGRP |
60f0fb11 | 5696 | if (ioctl (p->infd, TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
16782258 JD |
5697 | { |
5698 | int fd; | |
5699 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5700 | master side. Try the slave side. */ | |
eef60308 | 5701 | fd = emacs_open (SDATA (p->tty_name), O_RDONLY, 0); |
16782258 JD |
5702 | |
5703 | if (fd != -1) | |
5704 | { | |
5705 | ioctl (fd, TIOCGPGRP, &gid); | |
5706 | emacs_close (fd); | |
5707 | } | |
5708 | } | |
5709 | #endif /* defined (TIOCGPGRP ) */ | |
5710 | ||
5711 | return gid; | |
5712 | } | |
5713 | ||
b81ea5ef RS |
5714 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5715 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5716 | doc: /* Return t if PROCESS has given the terminal to a child. |
5717 | If the operating system does not make it possible to find out, | |
5718 | return t unconditionally. */) | |
5842a27b | 5719 | (Lisp_Object process) |
b81ea5ef RS |
5720 | { |
5721 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5722 | in a way that will cause returning t. */ | |
16782258 | 5723 | int gid; |
b81ea5ef RS |
5724 | Lisp_Object proc; |
5725 | struct Lisp_Process *p; | |
5726 | ||
5727 | proc = get_process (process); | |
5728 | p = XPROCESS (proc); | |
5729 | ||
d888760c | 5730 | if (!EQ (p->type, Qreal)) |
b81ea5ef | 5731 | error ("Process %s is not a subprocess", |
d5db4077 | 5732 | SDATA (p->name)); |
60f0fb11 | 5733 | if (p->infd < 0) |
b81ea5ef | 5734 | error ("Process %s is not active", |
d5db4077 | 5735 | SDATA (p->name)); |
b81ea5ef | 5736 | |
16782258 | 5737 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef | 5738 | |
6bfd98e7 | 5739 | if (gid == p->pid) |
b81ea5ef RS |
5740 | return Qnil; |
5741 | return Qt; | |
5742 | } | |
5743 | \f | |
d0d6b7c5 | 5744 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5745 | If CURRENT_GROUP is t, that means send to the process group |
5746 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5747 | This is used for various commands in shell mode. |
b81ea5ef RS |
5748 | If CURRENT_GROUP is lambda, that means send to the process group |
5749 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5750 | ||
d0d6b7c5 | 5751 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5752 | right away. |
5753 | ||
5754 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5755 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5756 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5757 | |
f9738840 | 5758 | static void |
d3da34e0 JB |
5759 | process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group, |
5760 | int nomsg) | |
d0d6b7c5 JB |
5761 | { |
5762 | Lisp_Object proc; | |
5763 | register struct Lisp_Process *p; | |
5764 | int gid; | |
5765 | int no_pgrp = 0; | |
5766 | ||
5767 | proc = get_process (process); | |
5768 | p = XPROCESS (proc); | |
5769 | ||
d888760c | 5770 | if (!EQ (p->type, Qreal)) |
d0d6b7c5 | 5771 | error ("Process %s is not a subprocess", |
d5db4077 | 5772 | SDATA (p->name)); |
60f0fb11 | 5773 | if (p->infd < 0) |
d0d6b7c5 | 5774 | error ("Process %s is not active", |
d5db4077 | 5775 | SDATA (p->name)); |
d0d6b7c5 | 5776 | |
60f0fb11 | 5777 | if (!p->pty_flag) |
d0d6b7c5 JB |
5778 | current_group = Qnil; |
5779 | ||
d0d6b7c5 | 5780 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5781 | if (NILP (current_group)) |
5782 | /* Send the signal to the shell's process group. */ | |
6bfd98e7 | 5783 | gid = p->pid; |
2af70a0c | 5784 | else |
d0d6b7c5 | 5785 | { |
b0310da4 | 5786 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5787 | /* If possible, send signals to the entire pgrp |
5788 | by sending an input character to it. */ | |
b0310da4 | 5789 | |
6be429b1 | 5790 | struct termios t; |
7f916a36 RS |
5791 | cc_t *sig_char = NULL; |
5792 | ||
60f0fb11 | 5793 | tcgetattr (p->infd, &t); |
6be429b1 JB |
5794 | |
5795 | switch (signo) | |
5796 | { | |
5797 | case SIGINT: | |
7f916a36 RS |
5798 | sig_char = &t.c_cc[VINTR]; |
5799 | break; | |
6be429b1 JB |
5800 | |
5801 | case SIGQUIT: | |
7f916a36 RS |
5802 | sig_char = &t.c_cc[VQUIT]; |
5803 | break; | |
6be429b1 JB |
5804 | |
5805 | case SIGTSTP: | |
d0adf46f | 5806 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5807 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5808 | #else |
7f916a36 | 5809 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5810 | #endif |
7f916a36 | 5811 | break; |
6be429b1 JB |
5812 | } |
5813 | ||
ca4313d5 | 5814 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5815 | { |
5816 | send_process (proc, sig_char, 1, Qnil); | |
5817 | return; | |
5818 | } | |
5819 | /* If we can't send the signal with a character, | |
5820 | fall through and send it another way. */ | |
f1c206fc RS |
5821 | |
5822 | /* The code above may fall through if it can't | |
5823 | handle the signal. */ | |
20505336 | 5824 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5825 | |
177c0ea7 | 5826 | #ifdef TIOCGPGRP |
2af70a0c | 5827 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5828 | Otherwise, use the pty to get the pgrp. |
5829 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5830 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5831 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5832 | His patch indicates that if TIOCGPGRP returns an error, then |
5833 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5834 | |
16782258 | 5835 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5836 | |
16782258 JD |
5837 | if (gid == -1) |
5838 | /* If we can't get the information, assume | |
5839 | the shell owns the tty. */ | |
6bfd98e7 | 5840 | gid = p->pid; |
2af70a0c RS |
5841 | |
5842 | /* It is not clear whether anything really can set GID to -1. | |
5843 | Perhaps on some system one of those ioctls can or could do so. | |
5844 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5845 | if (gid == -1) |
5846 | no_pgrp = 1; | |
b0310da4 | 5847 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5848 | /* Can't select pgrps on this system, so we know that |
5849 | the child itself heads the pgrp. */ | |
6bfd98e7 | 5850 | gid = p->pid; |
301c3fe4 | 5851 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5852 | |
5853 | /* If current_group is lambda, and the shell owns the terminal, | |
5854 | don't send any signal. */ | |
6bfd98e7 | 5855 | if (EQ (current_group, Qlambda) && gid == p->pid) |
b81ea5ef | 5856 | return; |
d0d6b7c5 | 5857 | } |
d0d6b7c5 JB |
5858 | |
5859 | switch (signo) | |
5860 | { | |
5861 | #ifdef SIGCONT | |
5862 | case SIGCONT: | |
6bfd98e7 | 5863 | p->raw_status_new = 0; |
d0d6b7c5 | 5864 | p->status = Qrun; |
60f0fb11 | 5865 | p->tick = ++process_tick; |
d0d6b7c5 | 5866 | if (!nomsg) |
e42bdf01 CY |
5867 | { |
5868 | status_notify (NULL); | |
5869 | redisplay_preserve_echo_area (13); | |
5870 | } | |
d0d6b7c5 | 5871 | break; |
301c3fe4 | 5872 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 | 5873 | case SIGINT: |
d0d6b7c5 | 5874 | case SIGQUIT: |
d0d6b7c5 | 5875 | case SIGKILL: |
60f0fb11 | 5876 | flush_pending_output (p->infd); |
d0d6b7c5 JB |
5877 | break; |
5878 | } | |
5879 | ||
5880 | /* If we don't have process groups, send the signal to the immediate | |
5881 | subprocess. That isn't really right, but it's better than any | |
5882 | obvious alternative. */ | |
5883 | if (no_pgrp) | |
5884 | { | |
6bfd98e7 | 5885 | kill (p->pid, signo); |
d0d6b7c5 JB |
5886 | return; |
5887 | } | |
5888 | ||
5889 | /* gid may be a pid, or minus a pgrp's number */ | |
5890 | #ifdef TIOCSIGSEND | |
5891 | if (!NILP (current_group)) | |
16782258 | 5892 | { |
60f0fb11 | 5893 | if (ioctl (p->infd, TIOCSIGSEND, signo) == -1) |
16782258 JD |
5894 | EMACS_KILLPG (gid, signo); |
5895 | } | |
d0d6b7c5 JB |
5896 | else |
5897 | { | |
6bfd98e7 | 5898 | gid = - p->pid; |
d0d6b7c5 JB |
5899 | kill (gid, signo); |
5900 | } | |
301c3fe4 | 5901 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5902 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5903 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5904 | } |
5905 | ||
5906 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5907 | doc: /* Interrupt process PROCESS. |
5908 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5909 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5910 | Second arg CURRENT-GROUP non-nil means send signal to |
5911 | the current process-group of the process's controlling terminal | |
5912 | rather than to the process's own process group. | |
5913 | If the process is a shell, this means interrupt current subjob | |
5914 | rather than the shell. | |
5915 | ||
5916 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5917 | don't send the signal. */) | |
5842a27b | 5918 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5919 | { |
5920 | process_send_signal (process, SIGINT, current_group, 0); | |
5921 | return process; | |
5922 | } | |
5923 | ||
5924 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5925 | doc: /* Kill process PROCESS. May be process or name of one. |
5926 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5927 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5928 | { |
5929 | process_send_signal (process, SIGKILL, current_group, 0); | |
5930 | return process; | |
5931 | } | |
5932 | ||
5933 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5934 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5935 | See function `interrupt-process' for more details on usage. */) | |
5842a27b | 5936 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 JB |
5937 | { |
5938 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5939 | return process; | |
5940 | } | |
5941 | ||
5942 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5943 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5944 | See function `interrupt-process' for more details on usage. |
d888760c GM |
5945 | If PROCESS is a network or serial process, inhibit handling of incoming |
5946 | traffic. */) | |
5842a27b | 5947 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 5948 | { |
d888760c | 5949 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
5950 | { |
5951 | struct Lisp_Process *p; | |
177c0ea7 | 5952 | |
e690ca94 KS |
5953 | p = XPROCESS (process); |
5954 | if (NILP (p->command) | |
60f0fb11 | 5955 | && p->infd >= 0) |
e690ca94 | 5956 | { |
60f0fb11 SM |
5957 | FD_CLR (p->infd, &input_wait_mask); |
5958 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e690ca94 KS |
5959 | } |
5960 | p->command = Qt; | |
5961 | return process; | |
5962 | } | |
d0d6b7c5 | 5963 | #ifndef SIGTSTP |
a9a73d6c | 5964 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
5965 | #else |
5966 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5967 | #endif | |
5968 | return process; | |
5969 | } | |
5970 | ||
5971 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5972 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5973 | See function `interrupt-process' for more details on usage. |
d888760c GM |
5974 | If PROCESS is a network or serial process, resume handling of incoming |
5975 | traffic. */) | |
5842a27b | 5976 | (Lisp_Object process, Lisp_Object current_group) |
d0d6b7c5 | 5977 | { |
d888760c | 5978 | if (PROCESSP (process) && (NETCONN_P (process) || SERIALCONN_P (process))) |
e690ca94 KS |
5979 | { |
5980 | struct Lisp_Process *p; | |
5981 | ||
5982 | p = XPROCESS (process); | |
5983 | if (EQ (p->command, Qt) | |
60f0fb11 | 5984 | && p->infd >= 0 |
e690ca94 KS |
5985 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) |
5986 | { | |
60f0fb11 SM |
5987 | FD_SET (p->infd, &input_wait_mask); |
5988 | FD_SET (p->infd, &non_keyboard_wait_mask); | |
d888760c GM |
5989 | #ifdef WINDOWSNT |
5990 | if (fd_info[ p->infd ].flags & FILE_SERIAL) | |
5991 | PurgeComm (fd_info[ p->infd ].hnd, PURGE_RXABORT | PURGE_RXCLEAR); | |
a7ebc409 | 5992 | #else /* not WINDOWSNT */ |
d888760c | 5993 | tcflush (p->infd, TCIFLUSH); |
a7ebc409 | 5994 | #endif /* not WINDOWSNT */ |
e690ca94 KS |
5995 | } |
5996 | p->command = Qnil; | |
5997 | return process; | |
5998 | } | |
d0d6b7c5 JB |
5999 | #ifdef SIGCONT |
6000 | process_send_signal (process, SIGCONT, current_group, 0); | |
6001 | #else | |
a9a73d6c | 6002 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6003 | #endif |
6004 | return process; | |
6005 | } | |
6006 | ||
6007 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6008 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6009 | doc: /* Send PROCESS the signal with code SIGCODE. | |
648f6edf | 6010 | PROCESS may also be a number specifying the process id of the |
cdd5ea86 KS |
6011 | process to signal; in this case, the process need not be a child of |
6012 | this Emacs. | |
fdb82f93 | 6013 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
5842a27b | 6014 | (Lisp_Object process, Lisp_Object sigcode) |
d0d6b7c5 | 6015 | { |
6bfd98e7 | 6016 | pid_t pid; |
cdd5ea86 KS |
6017 | |
6018 | if (INTEGERP (process)) | |
6019 | { | |
6bfd98e7 SM |
6020 | pid = XINT (process); |
6021 | goto got_it; | |
6022 | } | |
6023 | ||
6024 | if (FLOATP (process)) | |
6025 | { | |
648f6edf | 6026 | pid = (pid_t) XFLOAT_DATA (process); |
cdd5ea86 KS |
6027 | goto got_it; |
6028 | } | |
6029 | ||
6030 | if (STRINGP (process)) | |
6031 | { | |
6032 | Lisp_Object tem; | |
6033 | if (tem = Fget_process (process), NILP (tem)) | |
6034 | { | |
6bfd98e7 SM |
6035 | pid = XINT (Fstring_to_number (process, make_number (10))); |
6036 | if (pid > 0) | |
cdd5ea86 KS |
6037 | goto got_it; |
6038 | } | |
6039 | process = tem; | |
6040 | } | |
6041 | else | |
6042 | process = get_process (process); | |
177c0ea7 | 6043 | |
cdd5ea86 KS |
6044 | if (NILP (process)) |
6045 | return process; | |
6046 | ||
6047 | CHECK_PROCESS (process); | |
6048 | pid = XPROCESS (process)->pid; | |
6bfd98e7 | 6049 | if (pid <= 0) |
cdd5ea86 KS |
6050 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); |
6051 | ||
6052 | got_it: | |
4766242d | 6053 | |
59324b1d | 6054 | #define parse_signal(NAME, VALUE) \ |
05131107 | 6055 | else if (!xstrcasecmp (name, NAME)) \ |
4766242d RS |
6056 | XSETINT (sigcode, VALUE) |
6057 | ||
6058 | if (INTEGERP (sigcode)) | |
6059 | ; | |
6060 | else | |
6061 | { | |
6062 | unsigned char *name; | |
6063 | ||
b7826503 | 6064 | CHECK_SYMBOL (sigcode); |
d5db4077 | 6065 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6066 | |
ed3751c8 | 6067 | if (!strncmp (name, "SIG", 3) || !strncmp (name, "sig", 3)) |
675984ed KS |
6068 | name += 3; |
6069 | ||
4766242d RS |
6070 | if (0) |
6071 | ; | |
59324b1d KS |
6072 | #ifdef SIGUSR1 |
6073 | parse_signal ("usr1", SIGUSR1); | |
6074 | #endif | |
6075 | #ifdef SIGUSR2 | |
6076 | parse_signal ("usr2", SIGUSR2); | |
6077 | #endif | |
6078 | #ifdef SIGTERM | |
6079 | parse_signal ("term", SIGTERM); | |
6080 | #endif | |
4766242d | 6081 | #ifdef SIGHUP |
59324b1d | 6082 | parse_signal ("hup", SIGHUP); |
4766242d RS |
6083 | #endif |
6084 | #ifdef SIGINT | |
59324b1d | 6085 | parse_signal ("int", SIGINT); |
4766242d RS |
6086 | #endif |
6087 | #ifdef SIGQUIT | |
59324b1d | 6088 | parse_signal ("quit", SIGQUIT); |
4766242d RS |
6089 | #endif |
6090 | #ifdef SIGILL | |
59324b1d | 6091 | parse_signal ("ill", SIGILL); |
4766242d RS |
6092 | #endif |
6093 | #ifdef SIGABRT | |
59324b1d | 6094 | parse_signal ("abrt", SIGABRT); |
4766242d RS |
6095 | #endif |
6096 | #ifdef SIGEMT | |
59324b1d | 6097 | parse_signal ("emt", SIGEMT); |
4766242d RS |
6098 | #endif |
6099 | #ifdef SIGKILL | |
59324b1d | 6100 | parse_signal ("kill", SIGKILL); |
4766242d RS |
6101 | #endif |
6102 | #ifdef SIGFPE | |
59324b1d | 6103 | parse_signal ("fpe", SIGFPE); |
4766242d RS |
6104 | #endif |
6105 | #ifdef SIGBUS | |
59324b1d | 6106 | parse_signal ("bus", SIGBUS); |
4766242d RS |
6107 | #endif |
6108 | #ifdef SIGSEGV | |
59324b1d | 6109 | parse_signal ("segv", SIGSEGV); |
4766242d RS |
6110 | #endif |
6111 | #ifdef SIGSYS | |
59324b1d | 6112 | parse_signal ("sys", SIGSYS); |
4766242d RS |
6113 | #endif |
6114 | #ifdef SIGPIPE | |
59324b1d | 6115 | parse_signal ("pipe", SIGPIPE); |
4766242d RS |
6116 | #endif |
6117 | #ifdef SIGALRM | |
59324b1d | 6118 | parse_signal ("alrm", SIGALRM); |
4766242d RS |
6119 | #endif |
6120 | #ifdef SIGURG | |
59324b1d | 6121 | parse_signal ("urg", SIGURG); |
4766242d RS |
6122 | #endif |
6123 | #ifdef SIGSTOP | |
59324b1d | 6124 | parse_signal ("stop", SIGSTOP); |
4766242d RS |
6125 | #endif |
6126 | #ifdef SIGTSTP | |
59324b1d | 6127 | parse_signal ("tstp", SIGTSTP); |
4766242d RS |
6128 | #endif |
6129 | #ifdef SIGCONT | |
59324b1d | 6130 | parse_signal ("cont", SIGCONT); |
4766242d RS |
6131 | #endif |
6132 | #ifdef SIGCHLD | |
59324b1d | 6133 | parse_signal ("chld", SIGCHLD); |
4766242d RS |
6134 | #endif |
6135 | #ifdef SIGTTIN | |
59324b1d | 6136 | parse_signal ("ttin", SIGTTIN); |
4766242d RS |
6137 | #endif |
6138 | #ifdef SIGTTOU | |
59324b1d | 6139 | parse_signal ("ttou", SIGTTOU); |
4766242d RS |
6140 | #endif |
6141 | #ifdef SIGIO | |
59324b1d | 6142 | parse_signal ("io", SIGIO); |
4766242d RS |
6143 | #endif |
6144 | #ifdef SIGXCPU | |
59324b1d | 6145 | parse_signal ("xcpu", SIGXCPU); |
4766242d RS |
6146 | #endif |
6147 | #ifdef SIGXFSZ | |
59324b1d | 6148 | parse_signal ("xfsz", SIGXFSZ); |
4766242d RS |
6149 | #endif |
6150 | #ifdef SIGVTALRM | |
59324b1d | 6151 | parse_signal ("vtalrm", SIGVTALRM); |
4766242d RS |
6152 | #endif |
6153 | #ifdef SIGPROF | |
59324b1d | 6154 | parse_signal ("prof", SIGPROF); |
4766242d RS |
6155 | #endif |
6156 | #ifdef SIGWINCH | |
59324b1d | 6157 | parse_signal ("winch", SIGWINCH); |
4766242d RS |
6158 | #endif |
6159 | #ifdef SIGINFO | |
59324b1d | 6160 | parse_signal ("info", SIGINFO); |
4766242d RS |
6161 | #endif |
6162 | else | |
9fa195a2 | 6163 | error ("Undefined signal name %s", name); |
4766242d RS |
6164 | } |
6165 | ||
59324b1d | 6166 | #undef parse_signal |
4766242d | 6167 | |
6bfd98e7 | 6168 | return make_number (kill (pid, XINT (sigcode))); |
d0d6b7c5 JB |
6169 | } |
6170 | ||
6171 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6172 | doc: /* Make PROCESS see end-of-file in its input. |
6173 | EOF comes after any text already sent to it. | |
6174 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6175 | nil, indicating the current buffer's process. | |
6176 | If PROCESS is a network connection, or is a process communicating | |
6177 | through a pipe (as opposed to a pty), then you cannot send any more | |
d888760c GM |
6178 | text to PROCESS after you call this function. |
6179 | If PROCESS is a serial process, wait until all output written to the | |
6180 | process has been transmitted to the serial port. */) | |
5842a27b | 6181 | (Lisp_Object process) |
d0d6b7c5 JB |
6182 | { |
6183 | Lisp_Object proc; | |
de7fbd09 | 6184 | struct coding_system *coding; |
d0d6b7c5 | 6185 | |
e690ca94 KS |
6186 | if (DATAGRAM_CONN_P (process)) |
6187 | return process; | |
6188 | ||
d0d6b7c5 | 6189 | proc = get_process (process); |
60f0fb11 | 6190 | coding = proc_encode_coding_system[XPROCESS (proc)->outfd]; |
577d03d5 RS |
6191 | |
6192 | /* Make sure the process is really alive. */ | |
6bfd98e7 | 6193 | if (XPROCESS (proc)->raw_status_new) |
577d03d5 RS |
6194 | update_status (XPROCESS (proc)); |
6195 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6196 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6197 | |
de7fbd09 KH |
6198 | if (CODING_REQUIRE_FLUSHING (coding)) |
6199 | { | |
6200 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6201 | send_process (proc, "", 0, Qnil); | |
6202 | } | |
6203 | ||
60f0fb11 | 6204 | if (XPROCESS (proc)->pty_flag) |
4556b700 | 6205 | send_process (proc, "\004", 1, Qnil); |
a879ee6f | 6206 | else if (EQ (XPROCESS (proc)->type, Qserial)) |
d888760c | 6207 | { |
a7ebc409 | 6208 | #ifndef WINDOWSNT |
d888760c GM |
6209 | if (tcdrain (XPROCESS (proc)->outfd) != 0) |
6210 | error ("tcdrain() failed: %s", emacs_strerror (errno)); | |
a7ebc409 | 6211 | #endif /* not WINDOWSNT */ |
d888760c GM |
6212 | /* Do nothing on Windows because writes are blocking. */ |
6213 | } | |
d0d6b7c5 JB |
6214 | else |
6215 | { | |
4525f571 RS |
6216 | int old_outfd, new_outfd; |
6217 | ||
93853f3d | 6218 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6219 | /* If this is a network connection, or socketpair is used |
6220 | for communication with the subprocess, call shutdown to cause EOF. | |
6221 | (In some old system, shutdown to socketpair doesn't work. | |
6222 | Then we just can't win.) */ | |
a879ee6f | 6223 | if (EQ (XPROCESS (proc)->type, Qnetwork) |
60f0fb11 SM |
6224 | || XPROCESS (proc)->outfd == XPROCESS (proc)->infd) |
6225 | shutdown (XPROCESS (proc)->outfd, 1); | |
02f55c4b | 6226 | /* In case of socketpair, outfd == infd, so don't close it. */ |
60f0fb11 SM |
6227 | if (XPROCESS (proc)->outfd != XPROCESS (proc)->infd) |
6228 | emacs_close (XPROCESS (proc)->outfd); | |
93853f3d | 6229 | #else /* not HAVE_SHUTDOWN */ |
60f0fb11 | 6230 | emacs_close (XPROCESS (proc)->outfd); |
93853f3d | 6231 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6232 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
27448380 RS |
6233 | if (new_outfd < 0) |
6234 | abort (); | |
60f0fb11 | 6235 | old_outfd = XPROCESS (proc)->outfd; |
4525f571 RS |
6236 | |
6237 | if (!proc_encode_coding_system[new_outfd]) | |
6238 | proc_encode_coding_system[new_outfd] | |
6239 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
72af86bd AS |
6240 | memcpy (proc_encode_coding_system[new_outfd], |
6241 | proc_encode_coding_system[old_outfd], | |
6242 | sizeof (struct coding_system)); | |
6243 | memset (proc_encode_coding_system[old_outfd], 0, | |
6244 | sizeof (struct coding_system)); | |
4525f571 | 6245 | |
60f0fb11 | 6246 | XPROCESS (proc)->outfd = new_outfd; |
d0d6b7c5 | 6247 | } |
d0d6b7c5 JB |
6248 | return process; |
6249 | } | |
d0d6b7c5 | 6250 | \f |
3fed8ad5 GM |
6251 | /* On receipt of a signal that a child status has changed, loop asking |
6252 | about children with changed statuses until the system says there | |
6253 | are no more. | |
177c0ea7 | 6254 | |
3fed8ad5 GM |
6255 | All we do is change the status; we do not run sentinels or print |
6256 | notifications. That is saved for the next time keyboard input is | |
6257 | done, in order to avoid timing errors. | |
6258 | ||
6259 | ** WARNING: this can be called during garbage collection. | |
6260 | Therefore, it must not be fooled by the presence of mark bits in | |
6261 | Lisp objects. | |
6262 | ||
6263 | ** USG WARNING: Although it is not obvious from the documentation | |
6264 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6265 | signal() before executing at least one wait(), otherwise the | |
6266 | handler will be called again, resulting in an infinite loop. The | |
6267 | relevant portion of the documentation reads "SIGCLD signals will be | |
6268 | queued and the signal-catching function will be continually | |
6269 | reentered until the queue is empty". Invoking signal() causes the | |
6270 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
6b61353c KH |
6271 | Inc. |
6272 | ||
6273 | ** Malloc WARNING: This should never call malloc either directly or | |
6274 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 | 6275 | |
a5cfdda8 | 6276 | #ifdef SIGCHLD |
d0d6b7c5 | 6277 | SIGTYPE |
d3da34e0 | 6278 | sigchld_handler (int signo) |
d0d6b7c5 JB |
6279 | { |
6280 | int old_errno = errno; | |
6281 | Lisp_Object proc; | |
97ec208f | 6282 | struct Lisp_Process *p; |
d0d6b7c5 | 6283 | |
333f1b6f JD |
6284 | SIGNAL_THREAD_CHECK (signo); |
6285 | ||
d0d6b7c5 JB |
6286 | while (1) |
6287 | { | |
8e050977 | 6288 | pid_t pid; |
bba104c1 | 6289 | int w; |
d0d6b7c5 JB |
6290 | Lisp_Object tail; |
6291 | ||
6292 | #ifdef WNOHANG | |
6293 | #ifndef WUNTRACED | |
6294 | #define WUNTRACED 0 | |
6295 | #endif /* no WUNTRACED */ | |
6296 | /* Keep trying to get a status until we get a definitive result. */ | |
e7d4a904 | 6297 | do |
63136da6 | 6298 | { |
29ed4d51 CY |
6299 | errno = 0; |
6300 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
29ed4d51 | 6301 | } |
e7d4a904 | 6302 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6303 | |
6304 | if (pid <= 0) | |
6305 | { | |
3fed8ad5 GM |
6306 | /* PID == 0 means no processes found, PID == -1 means a real |
6307 | failure. We have done all our job, so return. */ | |
d0d6b7c5 | 6308 | |
d0d6b7c5 JB |
6309 | errno = old_errno; |
6310 | return; | |
6311 | } | |
6312 | #else | |
6313 | pid = wait (&w); | |
6314 | #endif /* no WNOHANG */ | |
6315 | ||
6316 | /* Find the process that signaled us, and record its status. */ | |
6317 | ||
a5cfdda8 | 6318 | /* The process can have been deleted by Fdelete_process. */ |
8e50cc2d | 6319 | for (tail = deleted_pid_list; CONSP (tail); tail = XCDR (tail)) |
a5cfdda8 | 6320 | { |
8e050977 | 6321 | Lisp_Object xpid = XCAR (tail); |
8e50cc2d SM |
6322 | if ((INTEGERP (xpid) && pid == (pid_t) XINT (xpid)) |
6323 | || (FLOATP (xpid) && pid == (pid_t) XFLOAT_DATA (xpid))) | |
8e050977 CY |
6324 | { |
6325 | XSETCAR (tail, Qnil); | |
6326 | goto sigchld_end_of_loop; | |
6327 | } | |
a5cfdda8 KS |
6328 | } |
6329 | ||
6330 | /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */ | |
d0d6b7c5 | 6331 | p = 0; |
8e50cc2d | 6332 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6333 | { |
70949dac | 6334 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6335 | p = XPROCESS (proc); |
d888760c | 6336 | if (EQ (p->type, Qreal) && p->pid == pid) |
d0d6b7c5 JB |
6337 | break; |
6338 | p = 0; | |
6339 | } | |
6340 | ||
6341 | /* Look for an asynchronous process whose pid hasn't been filled | |
6342 | in yet. */ | |
6343 | if (p == 0) | |
8e50cc2d | 6344 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6345 | { |
70949dac | 6346 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6347 | p = XPROCESS (proc); |
6bfd98e7 | 6348 | if (p->pid == -1) |
d0d6b7c5 JB |
6349 | break; |
6350 | p = 0; | |
6351 | } | |
177c0ea7 | 6352 | |
d0d6b7c5 JB |
6353 | /* Change the status of the process that was found. */ |
6354 | if (p != 0) | |
6355 | { | |
e98d950b | 6356 | int clear_desc_flag = 0; |
177c0ea7 | 6357 | |
60f0fb11 | 6358 | p->tick = ++process_tick; |
bba104c1 | 6359 | p->raw_status = w; |
6bfd98e7 | 6360 | p->raw_status_new = 1; |
177c0ea7 | 6361 | |
d0d6b7c5 | 6362 | /* If process has terminated, stop waiting for its output. */ |
e98d950b | 6363 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
60f0fb11 | 6364 | && p->infd >= 0) |
e98d950b RS |
6365 | clear_desc_flag = 1; |
6366 | ||
6367 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6368 | if (clear_desc_flag) | |
6369 | { | |
60f0fb11 SM |
6370 | FD_CLR (p->infd, &input_wait_mask); |
6371 | FD_CLR (p->infd, &non_keyboard_wait_mask); | |
e98d950b | 6372 | } |
6be429b1 | 6373 | |
214d6069 | 6374 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6375 | look around. */ |
6376 | if (input_available_clear_time) | |
6377 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6378 | } |
6379 | ||
a5cfdda8 KS |
6380 | /* There was no asynchronous process found for that pid: we have |
6381 | a synchronous process. */ | |
d0d6b7c5 JB |
6382 | else |
6383 | { | |
6384 | synch_process_alive = 0; | |
6385 | ||
6386 | /* Report the status of the synchronous process. */ | |
6387 | if (WIFEXITED (w)) | |
6388 | synch_process_retcode = WRETCODE (w); | |
6389 | else if (WIFSIGNALED (w)) | |
63136da6 | 6390 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6391 | |
214d6069 | 6392 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6393 | look around. */ |
6394 | if (input_available_clear_time) | |
6395 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6396 | } |
6397 | ||
a5cfdda8 KS |
6398 | sigchld_end_of_loop: |
6399 | ; | |
6400 | ||
d0d6b7c5 JB |
6401 | /* On some systems, we must return right away. |
6402 | If any more processes want to signal us, we will | |
6403 | get another signal. | |
6404 | Otherwise (on systems that have WNOHANG), loop around | |
6405 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6406 | #if (defined WINDOWSNT \ |
8a2a6032 | 6407 | || (defined USG && !defined GNU_LINUX \ |
63136da6 | 6408 | && !(defined HPUX && defined WNOHANG))) |
d0d6b7c5 JB |
6409 | errno = old_errno; |
6410 | return; | |
6411 | #endif /* USG, but not HPUX with WNOHANG */ | |
6412 | } | |
6413 | } | |
a5cfdda8 | 6414 | #endif /* SIGCHLD */ |
d0d6b7c5 JB |
6415 | \f |
6416 | ||
6417 | static Lisp_Object | |
d3da34e0 | 6418 | exec_sentinel_unwind (Lisp_Object data) |
d0d6b7c5 | 6419 | { |
70949dac | 6420 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6421 | return Qnil; |
6422 | } | |
6423 | ||
3b9a3dfa | 6424 | static Lisp_Object |
d3da34e0 | 6425 | exec_sentinel_error_handler (Lisp_Object error) |
3b9a3dfa RS |
6426 | { |
6427 | cmd_error_internal (error, "error in process sentinel: "); | |
6428 | Vinhibit_quit = Qt; | |
6429 | update_echo_area (); | |
833ba342 | 6430 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6431 | return Qt; |
3b9a3dfa RS |
6432 | } |
6433 | ||
d0d6b7c5 | 6434 | static void |
d3da34e0 | 6435 | exec_sentinel (Lisp_Object proc, Lisp_Object reason) |
d0d6b7c5 | 6436 | { |
dfc21838 | 6437 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6438 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6439 | int count = SPECPDL_INDEX (); |
4da2f5be | 6440 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6441 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6442 | |
84af9896 RS |
6443 | if (inhibit_sentinels) |
6444 | return; | |
6445 | ||
dfc21838 RS |
6446 | /* No need to gcpro these, because all we do with them later |
6447 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6448 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6449 | XSETBUFFER (obuffer, current_buffer); |
6450 | okeymap = current_buffer->keymap; | |
6451 | ||
97e53006 SM |
6452 | /* There's no good reason to let sentinels change the current |
6453 | buffer, and many callers of accept-process-output, sit-for, and | |
6454 | friends don't expect current-buffer to be changed from under them. */ | |
d2630aef | 6455 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
97e53006 | 6456 | |
d0d6b7c5 JB |
6457 | sentinel = p->sentinel; |
6458 | if (NILP (sentinel)) | |
6459 | return; | |
6460 | ||
6461 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6462 | assure that it gets restored no matter how the sentinel exits. */ | |
6463 | p->sentinel = Qnil; | |
6464 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6465 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6466 | specbind (Qinhibit_quit, Qt); | |
f00c449b | 6467 | specbind (Qlast_nonmenu_event, Qt); /* Why? --Stef */ |
3b9a3dfa | 6468 | |
4da2f5be RS |
6469 | /* In case we get recursively called, |
6470 | and we already saved the match data nonrecursively, | |
6471 | save the same match data in safely recursive fashion. */ | |
6472 | if (outer_running_asynch_code) | |
6473 | { | |
6474 | Lisp_Object tem; | |
89f2614d KS |
6475 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6476 | restore_search_regs (); | |
6477 | record_unwind_save_match_data (); | |
6478 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6479 | } |
6480 | ||
6481 | /* For speed, if a search happens within this code, | |
6482 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6483 | running_asynch_code = 1; |
4da2f5be | 6484 | |
3b9a3dfa RS |
6485 | internal_condition_case_1 (read_process_output_call, |
6486 | Fcons (sentinel, | |
6487 | Fcons (proc, Fcons (reason, Qnil))), | |
6488 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6489 | exec_sentinel_error_handler); | |
4da2f5be RS |
6490 | |
6491 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6492 | restore_search_regs (); |
4da2f5be | 6493 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6494 | |
6495 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6496 | |
6497 | /* Restore waiting_for_user_input_p as it was | |
6498 | when we were called, in case the filter clobbered it. */ | |
6499 | waiting_for_user_input_p = waiting; | |
6500 | ||
7973cfa8 | 6501 | #if 0 |
dfc21838 RS |
6502 | if (! EQ (Fcurrent_buffer (), obuffer) |
6503 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6504 | #endif |
927e08be RS |
6505 | /* But do it only if the caller is actually going to read events. |
6506 | Otherwise there's no need to make him wake up, and it could | |
7157b8fe | 6507 | cause trouble (for example it would make sit_for return). */ |
927e08be RS |
6508 | if (waiting_for_user_input_p == -1) |
6509 | record_asynch_buffer_change (); | |
8fb3cf64 | 6510 | |
2ea6d561 | 6511 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6512 | } |
6513 | ||
6514 | /* Report all recent events of a change in process status | |
6515 | (either run the sentinel or output a message). | |
b50fe468 RS |
6516 | This is usually done while Emacs is waiting for keyboard input |
6517 | but can be done at other times. */ | |
d0d6b7c5 | 6518 | |
ff6daed3 | 6519 | static void |
d3da34e0 | 6520 | status_notify (struct Lisp_Process *deleting_process) |
d0d6b7c5 JB |
6521 | { |
6522 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6523 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6524 | struct gcpro gcpro1, gcpro2; |
6525 | ||
2e4149a8 KH |
6526 | tail = Qnil; |
6527 | msg = Qnil; | |
d0d6b7c5 JB |
6528 | /* We need to gcpro tail; if read_process_output calls a filter |
6529 | which deletes a process and removes the cons to which tail points | |
6530 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6531 | reference. */ | |
6532 | GCPRO2 (tail, msg); | |
6533 | ||
30623085 RS |
6534 | /* Set this now, so that if new processes are created by sentinels |
6535 | that we run, we get called again to handle their status changes. */ | |
6536 | update_tick = process_tick; | |
6537 | ||
99784d63 | 6538 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6539 | { |
30623085 RS |
6540 | Lisp_Object symbol; |
6541 | register struct Lisp_Process *p; | |
6542 | ||
99784d63 | 6543 | proc = Fcdr (XCAR (tail)); |
30623085 RS |
6544 | p = XPROCESS (proc); |
6545 | ||
60f0fb11 | 6546 | if (p->tick != p->update_tick) |
d0d6b7c5 | 6547 | { |
60f0fb11 | 6548 | p->update_tick = p->tick; |
d0d6b7c5 | 6549 | |
30623085 | 6550 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6551 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6552 | && ! EQ (p->status, Qconnect) |
e690ca94 | 6553 | && ! EQ (p->status, Qlisten) |
d888760c GM |
6554 | /* Network or serial process not stopped: */ |
6555 | && ! EQ (p->command, Qt) | |
60f0fb11 | 6556 | && p->infd >= 0 |
ff6daed3 | 6557 | && p != deleting_process |
60f0fb11 | 6558 | && read_process_output (proc, p->infd) > 0); |
d0d6b7c5 | 6559 | |
30623085 | 6560 | buffer = p->buffer; |
d0d6b7c5 | 6561 | |
30623085 | 6562 | /* Get the text to use for the message. */ |
6bfd98e7 | 6563 | if (p->raw_status_new) |
30623085 | 6564 | update_status (p); |
116c423c | 6565 | msg = status_message (p); |
d0d6b7c5 | 6566 | |
30623085 RS |
6567 | /* If process is terminated, deactivate it or delete it. */ |
6568 | symbol = p->status; | |
6569 | if (CONSP (p->status)) | |
70949dac | 6570 | symbol = XCAR (p->status); |
d0d6b7c5 | 6571 | |
30623085 RS |
6572 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6573 | || EQ (symbol, Qclosed)) | |
6574 | { | |
6575 | if (delete_exited_processes) | |
6576 | remove_process (proc); | |
6577 | else | |
6578 | deactivate_process (proc); | |
6579 | } | |
d0d6b7c5 | 6580 | |
0ad61fe7 RS |
6581 | /* The actions above may have further incremented p->tick. |
6582 | So set p->update_tick again | |
6583 | so that an error in the sentinel will not cause | |
6584 | this code to be run again. */ | |
60f0fb11 | 6585 | p->update_tick = p->tick; |
30623085 RS |
6586 | /* Now output the message suitably. */ |
6587 | if (!NILP (p->sentinel)) | |
6588 | exec_sentinel (proc, msg); | |
6589 | /* Don't bother with a message in the buffer | |
6590 | when a process becomes runnable. */ | |
6591 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6592 | { | |
01f5787b | 6593 | Lisp_Object tem; |
30623085 | 6594 | struct buffer *old = current_buffer; |
d8a2934e RS |
6595 | int opoint, opoint_byte; |
6596 | int before, before_byte; | |
2e4149a8 | 6597 | |
30623085 RS |
6598 | /* Avoid error if buffer is deleted |
6599 | (probably that's why the process is dead, too) */ | |
6600 | if (NILP (XBUFFER (buffer)->name)) | |
6601 | continue; | |
6602 | Fset_buffer (buffer); | |
12ca5cdf | 6603 | |
6ec8bbd2 | 6604 | opoint = PT; |
d8a2934e | 6605 | opoint_byte = PT_BYTE; |
30623085 RS |
6606 | /* Insert new output into buffer |
6607 | at the current end-of-output marker, | |
6608 | thus preserving logical ordering of input and output. */ | |
6609 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6610 | Fgoto_char (p->mark); |
30623085 | 6611 | else |
d8a2934e | 6612 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6613 | |
6614 | before = PT; | |
d8a2934e | 6615 | before_byte = PT_BYTE; |
30623085 RS |
6616 | |
6617 | tem = current_buffer->read_only; | |
6618 | current_buffer->read_only = Qnil; | |
6619 | insert_string ("\nProcess "); | |
6620 | Finsert (1, &p->name); | |
6621 | insert_string (" "); | |
6622 | Finsert (1, &msg); | |
6623 | current_buffer->read_only = tem; | |
d8a2934e | 6624 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6625 | |
12ca5cdf | 6626 | if (opoint >= before) |
d8a2934e RS |
6627 | SET_PT_BOTH (opoint + (PT - before), |
6628 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6629 | else |
d8a2934e | 6630 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6631 | |
30623085 | 6632 | set_buffer_internal (old); |
d0d6b7c5 | 6633 | } |
30623085 RS |
6634 | } |
6635 | } /* end for */ | |
d0d6b7c5 JB |
6636 | |
6637 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
d0d6b7c5 JB |
6638 | UNGCPRO; |
6639 | } | |
0fa1789e KH |
6640 | |
6641 | \f | |
6642 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6643 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6644 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6645 | DECODING will be used to decode subprocess output and ENCODING to | |
6646 | encode subprocess input. */) | |
5842a27b | 6647 | (register Lisp_Object process, Lisp_Object decoding, Lisp_Object encoding) |
0fa1789e KH |
6648 | { |
6649 | register struct Lisp_Process *p; | |
6650 | ||
f3d9532b JB |
6651 | CHECK_PROCESS (process); |
6652 | p = XPROCESS (process); | |
60f0fb11 | 6653 | if (p->infd < 0) |
d5db4077 | 6654 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
60f0fb11 | 6655 | if (p->outfd < 0) |
d5db4077 | 6656 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6657 | Fcheck_coding_system (decoding); |
6658 | Fcheck_coding_system (encoding); | |
76d812bb | 6659 | encoding = coding_inherit_eol_type (encoding, Qnil); |
03f04413 KH |
6660 | p->decode_coding_system = decoding; |
6661 | p->encode_coding_system = encoding; | |
f3d9532b | 6662 | setup_process_coding_systems (process); |
0fa1789e KH |
6663 | |
6664 | return Qnil; | |
6665 | } | |
6666 | ||
6667 | DEFUN ("process-coding-system", | |
6668 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6669 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
5842a27b | 6670 | (register Lisp_Object process) |
0fa1789e | 6671 | { |
f3d9532b JB |
6672 | CHECK_PROCESS (process); |
6673 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6674 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6675 | } |
03f04413 KH |
6676 | |
6677 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6678 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6679 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6680 | If FLAG is non-nil, the filter is given multibyte strings. | |
6681 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6682 | all character code conversion except for end-of-line conversion is |
6683 | suppressed. */) | |
5842a27b | 6684 | (Lisp_Object process, Lisp_Object flag) |
03f04413 KH |
6685 | { |
6686 | register struct Lisp_Process *p; | |
6687 | ||
f3d9532b JB |
6688 | CHECK_PROCESS (process); |
6689 | p = XPROCESS (process); | |
5431bd6a SM |
6690 | if (NILP (flag)) |
6691 | p->decode_coding_system = raw_text_coding_system (p->decode_coding_system); | |
f3d9532b | 6692 | setup_process_coding_systems (process); |
03f04413 KH |
6693 | |
6694 | return Qnil; | |
6695 | } | |
6696 | ||
6697 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6698 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6699 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
5842a27b | 6700 | (Lisp_Object process) |
03f04413 KH |
6701 | { |
6702 | register struct Lisp_Process *p; | |
5431bd6a | 6703 | struct coding_system *coding; |
03f04413 | 6704 | |
f3d9532b JB |
6705 | CHECK_PROCESS (process); |
6706 | p = XPROCESS (process); | |
5431bd6a SM |
6707 | coding = proc_decode_coding_system[p->infd]; |
6708 | return (CODING_FOR_UNIBYTE (coding) ? Qnil : Qt); | |
03f04413 KH |
6709 | } |
6710 | ||
6711 | ||
d0d6b7c5 | 6712 | \f |
cb768704 | 6713 | |
994d9841 NR |
6714 | static int add_gpm_wait_descriptor_called_flag; |
6715 | ||
6716 | void | |
d3da34e0 | 6717 | add_gpm_wait_descriptor (int desc) |
994d9841 NR |
6718 | { |
6719 | if (! add_gpm_wait_descriptor_called_flag) | |
6720 | FD_CLR (0, &input_wait_mask); | |
6721 | add_gpm_wait_descriptor_called_flag = 1; | |
6722 | FD_SET (desc, &input_wait_mask); | |
6723 | FD_SET (desc, &gpm_wait_mask); | |
6724 | if (desc > max_gpm_desc) | |
6725 | max_gpm_desc = desc; | |
6726 | } | |
6727 | ||
994d9841 | 6728 | void |
d3da34e0 | 6729 | delete_gpm_wait_descriptor (int desc) |
994d9841 NR |
6730 | { |
6731 | int fd; | |
6732 | int lim = max_gpm_desc; | |
6733 | ||
6734 | FD_CLR (desc, &input_wait_mask); | |
6735 | FD_CLR (desc, &non_process_wait_mask); | |
6736 | ||
6737 | if (desc == max_gpm_desc) | |
6738 | for (fd = 0; fd < lim; fd++) | |
6739 | if (FD_ISSET (fd, &input_wait_mask) | |
6740 | && !FD_ISSET (fd, &non_keyboard_wait_mask) | |
6741 | && !FD_ISSET (fd, &non_process_wait_mask)) | |
6742 | max_gpm_desc = fd; | |
6743 | } | |
6744 | ||
a69281ff RS |
6745 | /* Return nonzero if *MASK has a bit set |
6746 | that corresponds to one of the keyboard input descriptors. */ | |
6747 | ||
ff6daed3 | 6748 | static int |
d3da34e0 | 6749 | keyboard_bit_set (fd_set *mask) |
a69281ff RS |
6750 | { |
6751 | int fd; | |
6752 | ||
ee8e09af | 6753 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
6754 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6755 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6756 | return 1; | |
6757 | ||
6758 | return 0; | |
6759 | } | |
934e2a68 | 6760 | |
f388c88a | 6761 | #else /* not subprocesses */ |
934e2a68 | 6762 | |
f388c88a EZ |
6763 | /* Defined on msdos.c. */ |
6764 | extern int sys_select (int, SELECT_TYPE *, SELECT_TYPE *, SELECT_TYPE *, | |
6765 | EMACS_TIME *); | |
934e2a68 | 6766 | |
f388c88a EZ |
6767 | /* Implementation of wait_reading_process_output, assuming that there |
6768 | are no subprocesses. Used only by the MS-DOS build. | |
934e2a68 | 6769 | |
f388c88a | 6770 | Wait for timeout to elapse and/or keyboard input to be available. |
934e2a68 | 6771 | |
f388c88a EZ |
6772 | time_limit is: |
6773 | timeout in seconds, or | |
6774 | zero for no limit, or | |
6775 | -1 means gobble data immediately available but don't wait for any. | |
934e2a68 | 6776 | |
f388c88a EZ |
6777 | read_kbd is a Lisp_Object: |
6778 | 0 to ignore keyboard input, or | |
6779 | 1 to return when input is available, or | |
6780 | -1 means caller will actually read the input, so don't throw to | |
6781 | the quit handler. | |
934e2a68 | 6782 | |
f388c88a EZ |
6783 | see full version for other parameters. We know that wait_proc will |
6784 | always be NULL, since `subprocesses' isn't defined. | |
934e2a68 | 6785 | |
f388c88a EZ |
6786 | do_display != 0 means redisplay should be done to show subprocess |
6787 | output that arrives. | |
934e2a68 | 6788 | |
f388c88a EZ |
6789 | Return true if we received input from any process. */ |
6790 | ||
6791 | int | |
1408902e EZ |
6792 | wait_reading_process_output (int time_limit, int microsecs, int read_kbd, |
6793 | int do_display, | |
6794 | Lisp_Object wait_for_cell, | |
6795 | struct Lisp_Process *wait_proc, int just_wait_proc) | |
d0d6b7c5 | 6796 | { |
f388c88a EZ |
6797 | register int nfds; |
6798 | EMACS_TIME end_time, timeout; | |
6799 | SELECT_TYPE waitchannels; | |
6800 | int xerrno; | |
d0d6b7c5 | 6801 | |
f388c88a EZ |
6802 | /* What does time_limit really mean? */ |
6803 | if (time_limit || microsecs) | |
6804 | { | |
6805 | EMACS_GET_TIME (end_time); | |
6806 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
6807 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
6808 | } | |
84af9896 | 6809 | |
f388c88a EZ |
6810 | /* Turn off periodic alarms (in case they are in use) |
6811 | and then turn off any other atimers, | |
6812 | because the select emulator uses alarms. */ | |
6813 | stop_polling (); | |
6814 | turn_on_atimers (0); | |
d0d6b7c5 | 6815 | |
f388c88a EZ |
6816 | while (1) |
6817 | { | |
6818 | int timeout_reduced_for_timers = 0; | |
dd2281ae | 6819 | |
f388c88a EZ |
6820 | /* If calling from keyboard input, do not quit |
6821 | since we want to return C-g as an input character. | |
6822 | Otherwise, do pending quit if requested. */ | |
6823 | if (read_kbd >= 0) | |
6824 | QUIT; | |
bad49fc7 | 6825 | |
f388c88a EZ |
6826 | /* Exit now if the cell we're waiting for became non-nil. */ |
6827 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) | |
6828 | break; | |
0a65b032 | 6829 | |
bae8d137 RS |
6830 | /* Compute time from now till when time limit is up */ |
6831 | /* Exit if already run out */ | |
52fd88d3 EZ |
6832 | if (time_limit == -1) |
6833 | { | |
6834 | /* -1 specified for timeout means | |
6835 | gobble output available now | |
6836 | but don't wait at all. */ | |
6837 | ||
6838 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
6839 | } | |
6840 | else if (time_limit || microsecs) | |
6720a7fb | 6841 | { |
f694e5d2 KH |
6842 | EMACS_GET_TIME (timeout); |
6843 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
6844 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
6845 | break; |
6846 | } | |
52fd88d3 EZ |
6847 | else |
6848 | { | |
6849 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
6850 | } | |
6720a7fb | 6851 | |
bae8d137 RS |
6852 | /* If our caller will not immediately handle keyboard events, |
6853 | run timer events directly. | |
6854 | (Callers that will immediately read keyboard events | |
6855 | call timer_delay on their own.) */ | |
f3fbd155 | 6856 | if (NILP (wait_for_cell)) |
bae8d137 RS |
6857 | { |
6858 | EMACS_TIME timer_delay; | |
0a65b032 | 6859 | |
9baacf76 | 6860 | do |
0a65b032 | 6861 | { |
9baacf76 GM |
6862 | int old_timers_run = timers_run; |
6863 | timer_delay = timer_check (1); | |
6864 | if (timers_run != old_timers_run && do_display) | |
6865 | /* We must retry, since a timer may have requeued itself | |
6866 | and that could alter the time delay. */ | |
3007ebfb | 6867 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
6868 | else |
6869 | break; | |
0a65b032 | 6870 | } |
9baacf76 | 6871 | while (!detect_input_pending ()); |
0a65b032 | 6872 | |
52fd88d3 | 6873 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6874 | if (read_kbd != 0 |
52fd88d3 EZ |
6875 | && requeued_events_pending_p ()) |
6876 | break; | |
6877 | ||
f694e5d2 | 6878 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
6879 | { |
6880 | EMACS_TIME difference; | |
f694e5d2 | 6881 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
6882 | if (EMACS_TIME_NEG_P (difference)) |
6883 | { | |
f694e5d2 | 6884 | timeout = timer_delay; |
bae8d137 RS |
6885 | timeout_reduced_for_timers = 1; |
6886 | } | |
6887 | } | |
6888 | } | |
6889 | ||
6720a7fb JB |
6890 | /* Cause C-g and alarm signals to take immediate action, |
6891 | and cause input available signals to zero out timeout. */ | |
b89a415a | 6892 | if (read_kbd < 0) |
6720a7fb JB |
6893 | set_waiting_for_input (&timeout); |
6894 | ||
0a65b032 RS |
6895 | /* Wait till there is something to do. */ |
6896 | ||
b89a415a | 6897 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
6898 | FD_ZERO (&waitchannels); |
6899 | else | |
6900 | FD_SET (0, &waitchannels); | |
6901 | ||
ff11dfa1 | 6902 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 6903 | reprocess its display stuff. */ |
5164ee8e | 6904 | if (frame_garbaged && do_display) |
0a65b032 RS |
6905 | { |
6906 | clear_waiting_for_input (); | |
3007ebfb | 6907 | redisplay_preserve_echo_area (15); |
b89a415a | 6908 | if (read_kbd < 0) |
0a65b032 RS |
6909 | set_waiting_for_input (&timeout); |
6910 | } | |
6720a7fb | 6911 | |
b89a415a | 6912 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
6913 | { |
6914 | nfds = 0; | |
6915 | FD_ZERO (&waitchannels); | |
6916 | } | |
6917 | else | |
6918 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
6919 | &timeout); | |
f694e5d2 KH |
6920 | |
6921 | xerrno = errno; | |
6720a7fb JB |
6922 | |
6923 | /* Make C-g and alarm signals set flags again */ | |
6924 | clear_waiting_for_input (); | |
6925 | ||
6926 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 6927 | do_pending_window_change (0); |
6720a7fb | 6928 | |
f694e5d2 KH |
6929 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
6930 | /* We waited the full specified time, so return now. */ | |
6931 | break; | |
6932 | ||
6720a7fb JB |
6933 | if (nfds == -1) |
6934 | { | |
6935 | /* If the system call was interrupted, then go around the | |
6936 | loop again. */ | |
f694e5d2 | 6937 | if (xerrno == EINTR) |
8db121c4 | 6938 | FD_ZERO (&waitchannels); |
f694e5d2 | 6939 | else |
68c45bf0 | 6940 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb | 6941 | } |
6720a7fb | 6942 | |
f694e5d2 KH |
6943 | /* Check for keyboard input */ |
6944 | ||
b89a415a | 6945 | if (read_kbd |
78c1afb6 | 6946 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 6947 | { |
78c1afb6 | 6948 | swallow_events (do_display); |
f694e5d2 | 6949 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 6950 | break; |
78c1afb6 EZ |
6951 | } |
6952 | ||
52fd88d3 | 6953 | /* If there is unread keyboard input, also return. */ |
b89a415a | 6954 | if (read_kbd |
52fd88d3 EZ |
6955 | && requeued_events_pending_p ()) |
6956 | break; | |
6957 | ||
f854a00b RS |
6958 | /* If wait_for_cell. check for keyboard input |
6959 | but don't run any timers. | |
6960 | ??? (It seems wrong to me to check for keyboard | |
6961 | input at all when wait_for_cell, but the code | |
6962 | has been this way since July 1994. | |
6963 | Try changing this after version 19.31.) */ | |
f3fbd155 | 6964 | if (! NILP (wait_for_cell) |
f854a00b RS |
6965 | && detect_input_pending ()) |
6966 | { | |
6967 | swallow_events (do_display); | |
6968 | if (detect_input_pending ()) | |
6969 | break; | |
6970 | } | |
6971 | ||
0a65b032 | 6972 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 6973 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 6974 | break; |
6720a7fb JB |
6975 | } |
6976 | ||
a87b802f JB |
6977 | start_polling (); |
6978 | ||
6720a7fb JB |
6979 | return 0; |
6980 | } | |
6981 | ||
f388c88a EZ |
6982 | #endif /* not subprocesses */ |
6983 | ||
6984 | /* The following functions are needed even if async subprocesses are | |
6985 | not supported. Some of them are no-op stubs in that case. */ | |
6720a7fb | 6986 | |
01faa934 DN |
6987 | /* Add DESC to the set of keyboard input descriptors. */ |
6988 | ||
6989 | void | |
6990 | add_keyboard_wait_descriptor (int desc) | |
6991 | { | |
20477505 | 6992 | #ifdef subprocesses |
01faa934 DN |
6993 | FD_SET (desc, &input_wait_mask); |
6994 | FD_SET (desc, &non_process_wait_mask); | |
6995 | if (desc > max_keyboard_desc) | |
6996 | max_keyboard_desc = desc; | |
20477505 | 6997 | #endif |
01faa934 DN |
6998 | } |
6999 | ||
7000 | /* From now on, do not expect DESC to give keyboard input. */ | |
7001 | ||
7002 | void | |
7003 | delete_keyboard_wait_descriptor (int desc) | |
7004 | { | |
7005 | #ifdef subprocesses | |
7006 | int fd; | |
7007 | int lim = max_keyboard_desc; | |
7008 | ||
7009 | FD_CLR (desc, &input_wait_mask); | |
7010 | FD_CLR (desc, &non_process_wait_mask); | |
7011 | ||
7012 | if (desc == max_keyboard_desc) | |
7013 | for (fd = 0; fd < lim; fd++) | |
7014 | if (FD_ISSET (fd, &input_wait_mask) | |
7015 | && !FD_ISSET (fd, &non_keyboard_wait_mask) | |
7016 | && !FD_ISSET (fd, &gpm_wait_mask)) | |
7017 | max_keyboard_desc = fd; | |
7018 | #endif /* subprocesses */ | |
7019 | } | |
7020 | ||
fc549af9 EZ |
7021 | /* Setup coding systems of PROCESS. */ |
7022 | ||
7023 | void | |
7024 | setup_process_coding_systems (Lisp_Object process) | |
7025 | { | |
7026 | #ifdef subprocesses | |
7027 | struct Lisp_Process *p = XPROCESS (process); | |
7028 | int inch = p->infd; | |
7029 | int outch = p->outfd; | |
7030 | Lisp_Object coding_system; | |
7031 | ||
7032 | if (inch < 0 || outch < 0) | |
7033 | return; | |
7034 | ||
7035 | if (!proc_decode_coding_system[inch]) | |
7036 | proc_decode_coding_system[inch] | |
7037 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
7038 | coding_system = p->decode_coding_system; | |
7039 | if (! NILP (p->filter)) | |
7040 | ; | |
7041 | else if (BUFFERP (p->buffer)) | |
7042 | { | |
7043 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
7044 | coding_system = raw_text_coding_system (coding_system); | |
7045 | } | |
7046 | setup_coding_system (coding_system, proc_decode_coding_system[inch]); | |
7047 | ||
7048 | if (!proc_encode_coding_system[outch]) | |
7049 | proc_encode_coding_system[outch] | |
7050 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
7051 | setup_coding_system (p->encode_coding_system, | |
7052 | proc_encode_coding_system[outch]); | |
7053 | #endif | |
7054 | } | |
7055 | ||
7056 | /* Close all descriptors currently in use for communication | |
7057 | with subprocess. This is used in a newly-forked subprocess | |
7058 | to get rid of irrelevant descriptors. */ | |
7059 | ||
7060 | void | |
7061 | close_process_descs (void) | |
7062 | { | |
7063 | #ifndef DOS_NT | |
7064 | int i; | |
7065 | for (i = 0; i < MAXDESC; i++) | |
7066 | { | |
7067 | Lisp_Object process; | |
7068 | process = chan_process[i]; | |
7069 | if (!NILP (process)) | |
7070 | { | |
7071 | int in = XPROCESS (process)->infd; | |
7072 | int out = XPROCESS (process)->outfd; | |
7073 | if (in >= 0) | |
7074 | emacs_close (in); | |
7075 | if (out >= 0 && in != out) | |
7076 | emacs_close (out); | |
7077 | } | |
7078 | } | |
7079 | #endif | |
7080 | } | |
7081 | ||
6720a7fb | 7082 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
f388c88a EZ |
7083 | doc: /* Return the (or a) process associated with BUFFER. |
7084 | BUFFER may be a buffer or the name of one. */) | |
7085 | (register Lisp_Object buffer) | |
6720a7fb | 7086 | { |
f388c88a EZ |
7087 | #ifdef subprocesses |
7088 | register Lisp_Object buf, tail, proc; | |
7089 | ||
7090 | if (NILP (buffer)) return Qnil; | |
7091 | buf = Fget_buffer (buffer); | |
7092 | if (NILP (buf)) return Qnil; | |
7093 | ||
7094 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7095 | { | |
7096 | proc = Fcdr (XCAR (tail)); | |
7097 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) | |
7098 | return proc; | |
7099 | } | |
7100 | #endif /* subprocesses */ | |
6720a7fb JB |
7101 | return Qnil; |
7102 | } | |
7103 | ||
52a1b894 | 7104 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7105 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7106 | 1, 1, 0, | |
f388c88a EZ |
7107 | doc: /* Return the value of inherit-coding-system flag for PROCESS. |
7108 | If this flag is t, `buffer-file-coding-system' of the buffer | |
7109 | associated with PROCESS will inherit the coding system used to decode | |
7110 | the process output. */) | |
5842a27b | 7111 | (register Lisp_Object process) |
52a1b894 | 7112 | { |
f388c88a EZ |
7113 | #ifdef subprocesses |
7114 | CHECK_PROCESS (process); | |
7115 | return XPROCESS (process)->inherit_coding_system_flag ? Qt : Qnil; | |
7116 | #else | |
52a1b894 EZ |
7117 | /* Ignore the argument and return the value of |
7118 | inherit-process-coding-system. */ | |
7119 | return inherit_process_coding_system ? Qt : Qnil; | |
f388c88a | 7120 | #endif |
52a1b894 EZ |
7121 | } |
7122 | ||
6720a7fb | 7123 | /* Kill all processes associated with `buffer'. |
f388c88a | 7124 | If `buffer' is nil, kill all processes */ |
6720a7fb | 7125 | |
d9bb0c32 | 7126 | void |
f388c88a | 7127 | kill_buffer_processes (Lisp_Object buffer) |
6720a7fb | 7128 | { |
f388c88a EZ |
7129 | #ifdef subprocesses |
7130 | Lisp_Object tail, proc; | |
7131 | ||
7132 | for (tail = Vprocess_alist; CONSP (tail); tail = XCDR (tail)) | |
7133 | { | |
7134 | proc = XCDR (XCAR (tail)); | |
7135 | if (PROCESSP (proc) | |
7136 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) | |
7137 | { | |
7138 | if (NETCONN_P (proc) || SERIALCONN_P (proc)) | |
7139 | Fdelete_process (proc); | |
7140 | else if (XPROCESS (proc)->infd >= 0) | |
7141 | process_send_signal (proc, SIGHUP, Qnil, 1); | |
7142 | } | |
7143 | } | |
7144 | #else /* subprocesses */ | |
7145 | /* Since we have no subprocesses, this does nothing. */ | |
7146 | #endif /* subprocesses */ | |
6720a7fb JB |
7147 | } |
7148 | ||
77defa9a EZ |
7149 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, |
7150 | 0, 0, 0, | |
7151 | doc: /* Returns non-nil if Emacs is waiting for input from the user. | |
7152 | This is intended for use by asynchronous process output filters and sentinels. */) | |
7153 | (void) | |
7154 | { | |
7155 | #ifdef subprocesses | |
7156 | return (waiting_for_user_input_p ? Qt : Qnil); | |
7157 | #else | |
7158 | return Qnil; | |
7159 | #endif | |
7160 | } | |
7161 | ||
d568829b EZ |
7162 | /* Stop reading input from keyboard sources. */ |
7163 | ||
7164 | void | |
7165 | hold_keyboard_input (void) | |
7166 | { | |
7167 | kbd_is_on_hold = 1; | |
7168 | } | |
7169 | ||
7170 | /* Resume reading input from keyboard sources. */ | |
7171 | ||
7172 | void | |
7173 | unhold_keyboard_input (void) | |
7174 | { | |
7175 | kbd_is_on_hold = 0; | |
7176 | } | |
7177 | ||
7178 | /* Return non-zero if keyboard input is on hold, zero otherwise. */ | |
7179 | ||
7180 | int | |
7181 | kbd_on_hold_p (void) | |
7182 | { | |
7183 | return kbd_is_on_hold; | |
7184 | } | |
7185 | ||
f388c88a EZ |
7186 | \f |
7187 | /* Enumeration of and access to system processes a-la ps(1). */ | |
7188 | ||
934e2a68 EZ |
7189 | DEFUN ("list-system-processes", Flist_system_processes, Slist_system_processes, |
7190 | 0, 0, 0, | |
7191 | doc: /* Return a list of numerical process IDs of all running processes. | |
7192 | If this functionality is unsupported, return nil. | |
7193 | ||
f388c88a EZ |
7194 | See `process-attributes' for getting attributes of a process given its ID. */) |
7195 | (void) | |
7196 | { | |
7197 | return list_system_processes (); | |
7198 | } | |
7199 | ||
7200 | DEFUN ("process-attributes", Fprocess_attributes, | |
7201 | Sprocess_attributes, 1, 1, 0, | |
7202 | doc: /* Return attributes of the process given by its PID, a number. | |
7203 | ||
7204 | Value is an alist where each element is a cons cell of the form | |
7205 | ||
7206 | \(KEY . VALUE) | |
7207 | ||
7208 | If this functionality is unsupported, the value is nil. | |
7209 | ||
7210 | See `list-system-processes' for getting a list of all process IDs. | |
7211 | ||
7212 | The KEYs of the attributes that this function may return are listed | |
7213 | below, together with the type of the associated VALUE (in parentheses). | |
7214 | Not all platforms support all of these attributes; unsupported | |
7215 | attributes will not appear in the returned alist. | |
7216 | Unless explicitly indicated otherwise, numbers can have either | |
7217 | integer or floating point values. | |
7218 | ||
7219 | euid -- Effective user User ID of the process (number) | |
7220 | user -- User name corresponding to euid (string) | |
7221 | egid -- Effective user Group ID of the process (number) | |
7222 | group -- Group name corresponding to egid (string) | |
7223 | comm -- Command name (executable name only) (string) | |
7224 | state -- Process state code, such as "S", "R", or "T" (string) | |
7225 | ppid -- Parent process ID (number) | |
7226 | pgrp -- Process group ID (number) | |
7227 | sess -- Session ID, i.e. process ID of session leader (number) | |
7228 | ttname -- Controlling tty name (string) | |
7229 | tpgid -- ID of foreground process group on the process's tty (number) | |
7230 | minflt -- number of minor page faults (number) | |
7231 | majflt -- number of major page faults (number) | |
7232 | cminflt -- cumulative number of minor page faults (number) | |
7233 | cmajflt -- cumulative number of major page faults (number) | |
7234 | utime -- user time used by the process, in the (HIGH LOW USEC) format | |
7235 | stime -- system time used by the process, in the (HIGH LOW USEC) format | |
7236 | time -- sum of utime and stime, in the (HIGH LOW USEC) format | |
7237 | cutime -- user time used by the process and its children, (HIGH LOW USEC) | |
7238 | cstime -- system time used by the process and its children, (HIGH LOW USEC) | |
7239 | ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format | |
7240 | pri -- priority of the process (number) | |
7241 | nice -- nice value of the process (number) | |
7242 | thcount -- process thread count (number) | |
7243 | start -- time the process started, in the (HIGH LOW USEC) format | |
7244 | vsize -- virtual memory size of the process in KB's (number) | |
7245 | rss -- resident set size of the process in KB's (number) | |
7246 | etime -- elapsed time the process is running, in (HIGH LOW USEC) format | |
7247 | pcpu -- percents of CPU time used by the process (floating-point number) | |
7248 | pmem -- percents of total physical memory used by process's resident set | |
7249 | (floating-point number) | |
7250 | args -- command line which invoked the process (string). */) | |
7251 | ( Lisp_Object pid) | |
7252 | { | |
7253 | return system_process_attributes (pid); | |
7254 | } | |
7255 | ||
7256 | \f | |
7257 | void | |
7258 | init_process (void) | |
7259 | { | |
7260 | #ifdef subprocesses | |
7261 | register int i; | |
7262 | ||
7263 | inhibit_sentinels = 0; | |
7264 | ||
7265 | #ifdef SIGCHLD | |
7266 | #ifndef CANNOT_DUMP | |
7267 | if (! noninteractive || initialized) | |
7268 | #endif | |
7269 | signal (SIGCHLD, sigchld_handler); | |
7270 | #endif | |
7271 | ||
7272 | FD_ZERO (&input_wait_mask); | |
7273 | FD_ZERO (&non_keyboard_wait_mask); | |
7274 | FD_ZERO (&non_process_wait_mask); | |
7275 | max_process_desc = 0; | |
7276 | ||
7277 | #ifdef NON_BLOCKING_CONNECT | |
7278 | FD_ZERO (&connect_wait_mask); | |
7279 | num_pending_connects = 0; | |
7280 | #endif | |
7281 | ||
7282 | #ifdef ADAPTIVE_READ_BUFFERING | |
7283 | process_output_delay_count = 0; | |
7284 | process_output_skip = 0; | |
7285 | #endif | |
7286 | ||
7287 | /* Don't do this, it caused infinite select loops. The display | |
7288 | method should call add_keyboard_wait_descriptor on stdin if it | |
7289 | needs that. */ | |
7290 | #if 0 | |
7291 | FD_SET (0, &input_wait_mask); | |
7292 | #endif | |
7293 | ||
7294 | Vprocess_alist = Qnil; | |
7295 | #ifdef SIGCHLD | |
7296 | deleted_pid_list = Qnil; | |
7297 | #endif | |
7298 | for (i = 0; i < MAXDESC; i++) | |
7299 | { | |
7300 | chan_process[i] = Qnil; | |
7301 | proc_buffered_char[i] = -1; | |
7302 | } | |
7303 | memset (proc_decode_coding_system, 0, sizeof proc_decode_coding_system); | |
7304 | memset (proc_encode_coding_system, 0, sizeof proc_encode_coding_system); | |
7305 | #ifdef DATAGRAM_SOCKETS | |
7306 | memset (datagram_address, 0, sizeof datagram_address); | |
7307 | #endif | |
7308 | ||
f388c88a EZ |
7309 | { |
7310 | Lisp_Object subfeatures = Qnil; | |
7311 | const struct socket_options *sopt; | |
7312 | ||
7313 | #define ADD_SUBFEATURE(key, val) \ | |
7314 | subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures) | |
7315 | ||
7316 | #ifdef NON_BLOCKING_CONNECT | |
7317 | ADD_SUBFEATURE (QCnowait, Qt); | |
7318 | #endif | |
7319 | #ifdef DATAGRAM_SOCKETS | |
7320 | ADD_SUBFEATURE (QCtype, Qdatagram); | |
7321 | #endif | |
7322 | #ifdef HAVE_SEQPACKET | |
7323 | ADD_SUBFEATURE (QCtype, Qseqpacket); | |
7324 | #endif | |
7325 | #ifdef HAVE_LOCAL_SOCKETS | |
7326 | ADD_SUBFEATURE (QCfamily, Qlocal); | |
7327 | #endif | |
7328 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
7329 | #ifdef AF_INET6 | |
7330 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
7331 | #endif | |
7332 | #ifdef HAVE_GETSOCKNAME | |
7333 | ADD_SUBFEATURE (QCservice, Qt); | |
7334 | #endif | |
7335 | #if defined(O_NONBLOCK) || defined(O_NDELAY) | |
7336 | ADD_SUBFEATURE (QCserver, Qt); | |
7337 | #endif | |
7338 | ||
7339 | for (sopt = socket_options; sopt->name; sopt++) | |
7340 | subfeatures = pure_cons (intern_c_string (sopt->name), subfeatures); | |
7341 | ||
7342 | Fprovide (intern_c_string ("make-network-process"), subfeatures); | |
7343 | } | |
f388c88a EZ |
7344 | |
7345 | #if defined (DARWIN_OS) | |
7346 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive | |
7347 | processes. As such, we only change the default value. */ | |
7348 | if (initialized) | |
7349 | { | |
8ea90aa3 | 7350 | const char *release = get_operating_system_release (); |
f388c88a EZ |
7351 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION |
7352 | && release[1] == '.')) { | |
7353 | Vprocess_connection_type = Qnil; | |
7354 | } | |
7355 | } | |
7356 | #endif | |
7357 | #endif /* subprocesses */ | |
7358 | kbd_is_on_hold = 0; | |
7359 | } | |
7360 | ||
7361 | void | |
7362 | syms_of_process (void) | |
7363 | { | |
7364 | #ifdef subprocesses | |
7365 | ||
7366 | Qprocessp = intern_c_string ("processp"); | |
7367 | staticpro (&Qprocessp); | |
7368 | Qrun = intern_c_string ("run"); | |
7369 | staticpro (&Qrun); | |
7370 | Qstop = intern_c_string ("stop"); | |
7371 | staticpro (&Qstop); | |
7372 | Qsignal = intern_c_string ("signal"); | |
7373 | staticpro (&Qsignal); | |
7374 | ||
7375 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
7376 | here again. | |
934e2a68 | 7377 | |
f388c88a EZ |
7378 | Qexit = intern_c_string ("exit"); |
7379 | staticpro (&Qexit); */ | |
934e2a68 | 7380 | |
f388c88a EZ |
7381 | Qopen = intern_c_string ("open"); |
7382 | staticpro (&Qopen); | |
7383 | Qclosed = intern_c_string ("closed"); | |
7384 | staticpro (&Qclosed); | |
7385 | Qconnect = intern_c_string ("connect"); | |
7386 | staticpro (&Qconnect); | |
7387 | Qfailed = intern_c_string ("failed"); | |
7388 | staticpro (&Qfailed); | |
7389 | Qlisten = intern_c_string ("listen"); | |
7390 | staticpro (&Qlisten); | |
7391 | Qlocal = intern_c_string ("local"); | |
7392 | staticpro (&Qlocal); | |
7393 | Qipv4 = intern_c_string ("ipv4"); | |
7394 | staticpro (&Qipv4); | |
7395 | #ifdef AF_INET6 | |
7396 | Qipv6 = intern_c_string ("ipv6"); | |
7397 | staticpro (&Qipv6); | |
7398 | #endif | |
7399 | Qdatagram = intern_c_string ("datagram"); | |
7400 | staticpro (&Qdatagram); | |
7401 | Qseqpacket = intern_c_string ("seqpacket"); | |
7402 | staticpro (&Qseqpacket); | |
934e2a68 | 7403 | |
f388c88a EZ |
7404 | QCport = intern_c_string (":port"); |
7405 | staticpro (&QCport); | |
7406 | QCspeed = intern_c_string (":speed"); | |
7407 | staticpro (&QCspeed); | |
7408 | QCprocess = intern_c_string (":process"); | |
7409 | staticpro (&QCprocess); | |
934e2a68 | 7410 | |
f388c88a EZ |
7411 | QCbytesize = intern_c_string (":bytesize"); |
7412 | staticpro (&QCbytesize); | |
7413 | QCstopbits = intern_c_string (":stopbits"); | |
7414 | staticpro (&QCstopbits); | |
7415 | QCparity = intern_c_string (":parity"); | |
7416 | staticpro (&QCparity); | |
7417 | Qodd = intern_c_string ("odd"); | |
7418 | staticpro (&Qodd); | |
7419 | Qeven = intern_c_string ("even"); | |
7420 | staticpro (&Qeven); | |
7421 | QCflowcontrol = intern_c_string (":flowcontrol"); | |
7422 | staticpro (&QCflowcontrol); | |
7423 | Qhw = intern_c_string ("hw"); | |
7424 | staticpro (&Qhw); | |
7425 | Qsw = intern_c_string ("sw"); | |
7426 | staticpro (&Qsw); | |
7427 | QCsummary = intern_c_string (":summary"); | |
7428 | staticpro (&QCsummary); | |
934e2a68 | 7429 | |
f388c88a EZ |
7430 | Qreal = intern_c_string ("real"); |
7431 | staticpro (&Qreal); | |
7432 | Qnetwork = intern_c_string ("network"); | |
7433 | staticpro (&Qnetwork); | |
7434 | Qserial = intern_c_string ("serial"); | |
7435 | staticpro (&Qserial); | |
7436 | QCbuffer = intern_c_string (":buffer"); | |
7437 | staticpro (&QCbuffer); | |
7438 | QChost = intern_c_string (":host"); | |
7439 | staticpro (&QChost); | |
7440 | QCservice = intern_c_string (":service"); | |
7441 | staticpro (&QCservice); | |
7442 | QClocal = intern_c_string (":local"); | |
7443 | staticpro (&QClocal); | |
7444 | QCremote = intern_c_string (":remote"); | |
7445 | staticpro (&QCremote); | |
7446 | QCcoding = intern_c_string (":coding"); | |
7447 | staticpro (&QCcoding); | |
7448 | QCserver = intern_c_string (":server"); | |
7449 | staticpro (&QCserver); | |
7450 | QCnowait = intern_c_string (":nowait"); | |
7451 | staticpro (&QCnowait); | |
7452 | QCsentinel = intern_c_string (":sentinel"); | |
7453 | staticpro (&QCsentinel); | |
7454 | QClog = intern_c_string (":log"); | |
7455 | staticpro (&QClog); | |
7456 | QCnoquery = intern_c_string (":noquery"); | |
7457 | staticpro (&QCnoquery); | |
7458 | QCstop = intern_c_string (":stop"); | |
7459 | staticpro (&QCstop); | |
7460 | QCoptions = intern_c_string (":options"); | |
7461 | staticpro (&QCoptions); | |
7462 | QCplist = intern_c_string (":plist"); | |
7463 | staticpro (&QCplist); | |
934e2a68 | 7464 | |
f388c88a EZ |
7465 | Qlast_nonmenu_event = intern_c_string ("last-nonmenu-event"); |
7466 | staticpro (&Qlast_nonmenu_event); | |
934e2a68 | 7467 | |
f388c88a EZ |
7468 | staticpro (&Vprocess_alist); |
7469 | #ifdef SIGCHLD | |
7470 | staticpro (&deleted_pid_list); | |
7471 | #endif | |
934e2a68 | 7472 | |
f388c88a | 7473 | #endif /* subprocesses */ |
6720a7fb | 7474 | |
d67b4f80 | 7475 | QCname = intern_c_string (":name"); |
8c57b2e5 | 7476 | staticpro (&QCname); |
d67b4f80 | 7477 | QCtype = intern_c_string (":type"); |
6a1bab0e | 7478 | staticpro (&QCtype); |
f388c88a | 7479 | |
d67b4f80 | 7480 | Qeuid = intern_c_string ("euid"); |
6a1bab0e | 7481 | staticpro (&Qeuid); |
d67b4f80 | 7482 | Qegid = intern_c_string ("egid"); |
6a1bab0e | 7483 | staticpro (&Qegid); |
d67b4f80 | 7484 | Quser = intern_c_string ("user"); |
6a1bab0e | 7485 | staticpro (&Quser); |
d67b4f80 | 7486 | Qgroup = intern_c_string ("group"); |
6a1bab0e | 7487 | staticpro (&Qgroup); |
d67b4f80 | 7488 | Qcomm = intern_c_string ("comm"); |
6a1bab0e | 7489 | staticpro (&Qcomm); |
d67b4f80 | 7490 | Qstate = intern_c_string ("state"); |
6a1bab0e | 7491 | staticpro (&Qstate); |
d67b4f80 | 7492 | Qppid = intern_c_string ("ppid"); |
6a1bab0e | 7493 | staticpro (&Qppid); |
d67b4f80 | 7494 | Qpgrp = intern_c_string ("pgrp"); |
6a1bab0e | 7495 | staticpro (&Qpgrp); |
d67b4f80 | 7496 | Qsess = intern_c_string ("sess"); |
6a1bab0e | 7497 | staticpro (&Qsess); |
d67b4f80 | 7498 | Qttname = intern_c_string ("ttname"); |
6a1bab0e | 7499 | staticpro (&Qttname); |
d67b4f80 | 7500 | Qtpgid = intern_c_string ("tpgid"); |
6a1bab0e | 7501 | staticpro (&Qtpgid); |
d67b4f80 | 7502 | Qminflt = intern_c_string ("minflt"); |
6a1bab0e | 7503 | staticpro (&Qminflt); |
d67b4f80 | 7504 | Qmajflt = intern_c_string ("majflt"); |
6a1bab0e | 7505 | staticpro (&Qmajflt); |
d67b4f80 | 7506 | Qcminflt = intern_c_string ("cminflt"); |
6a1bab0e | 7507 | staticpro (&Qcminflt); |
d67b4f80 | 7508 | Qcmajflt = intern_c_string ("cmajflt"); |
6a1bab0e | 7509 | staticpro (&Qcmajflt); |
d67b4f80 | 7510 | Qutime = intern_c_string ("utime"); |
6a1bab0e | 7511 | staticpro (&Qutime); |
d67b4f80 | 7512 | Qstime = intern_c_string ("stime"); |
6a1bab0e | 7513 | staticpro (&Qstime); |
d67b4f80 | 7514 | Qtime = intern_c_string ("time"); |
6a1bab0e | 7515 | staticpro (&Qtime); |
d67b4f80 | 7516 | Qcutime = intern_c_string ("cutime"); |
6a1bab0e | 7517 | staticpro (&Qcutime); |
d67b4f80 | 7518 | Qcstime = intern_c_string ("cstime"); |
6a1bab0e | 7519 | staticpro (&Qcstime); |
d67b4f80 | 7520 | Qctime = intern_c_string ("ctime"); |
6a1bab0e | 7521 | staticpro (&Qctime); |
d67b4f80 | 7522 | Qpri = intern_c_string ("pri"); |
6a1bab0e | 7523 | staticpro (&Qpri); |
d67b4f80 | 7524 | Qnice = intern_c_string ("nice"); |
6a1bab0e | 7525 | staticpro (&Qnice); |
d67b4f80 | 7526 | Qthcount = intern_c_string ("thcount"); |
6a1bab0e | 7527 | staticpro (&Qthcount); |
d67b4f80 | 7528 | Qstart = intern_c_string ("start"); |
6a1bab0e | 7529 | staticpro (&Qstart); |
d67b4f80 | 7530 | Qvsize = intern_c_string ("vsize"); |
6a1bab0e | 7531 | staticpro (&Qvsize); |
d67b4f80 | 7532 | Qrss = intern_c_string ("rss"); |
6a1bab0e | 7533 | staticpro (&Qrss); |
d67b4f80 | 7534 | Qetime = intern_c_string ("etime"); |
6a1bab0e | 7535 | staticpro (&Qetime); |
d67b4f80 | 7536 | Qpcpu = intern_c_string ("pcpu"); |
6a1bab0e | 7537 | staticpro (&Qpcpu); |
d67b4f80 | 7538 | Qpmem = intern_c_string ("pmem"); |
6a1bab0e | 7539 | staticpro (&Qpmem); |
d67b4f80 | 7540 | Qargs = intern_c_string ("args"); |
6a1bab0e | 7541 | staticpro (&Qargs); |
9057ff80 | 7542 | |
f388c88a EZ |
7543 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, |
7544 | doc: /* *Non-nil means delete processes immediately when they exit. | |
7545 | A value of nil means don't delete them until `list-processes' is run. */); | |
7546 | ||
7547 | delete_exited_processes = 1; | |
7548 | ||
462aa963 | 7549 | #ifdef subprocesses |
f388c88a EZ |
7550 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, |
7551 | doc: /* Control type of device used to communicate with subprocesses. | |
7552 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
7553 | The value has no effect if the system has no ptys or if all ptys are busy: | |
7554 | then a pipe is used in any case. | |
7555 | The value takes effect when `start-process' is called. */); | |
7556 | Vprocess_connection_type = Qt; | |
7557 | ||
7558 | #ifdef ADAPTIVE_READ_BUFFERING | |
7559 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
7560 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
7561 | On some systems, when Emacs reads the output from a subprocess, the output data | |
7562 | is read in very small blocks, potentially resulting in very poor performance. | |
7563 | This behavior can be remedied to some extent by setting this variable to a | |
7564 | non-nil value, as it will automatically delay reading from such processes, to | |
7565 | allow them to produce more output before Emacs tries to read it. | |
7566 | If the value is t, the delay is reset after each write to the process; any other | |
7567 | non-nil value means that the delay is not reset on write. | |
7568 | The variable takes effect when `start-process' is called. */); | |
7569 | Vprocess_adaptive_read_buffering = Qt; | |
7570 | #endif | |
7571 | ||
7572 | defsubr (&Sprocessp); | |
7573 | defsubr (&Sget_process); | |
7574 | defsubr (&Sdelete_process); | |
7575 | defsubr (&Sprocess_status); | |
7576 | defsubr (&Sprocess_exit_status); | |
7577 | defsubr (&Sprocess_id); | |
7578 | defsubr (&Sprocess_name); | |
7579 | defsubr (&Sprocess_tty_name); | |
7580 | defsubr (&Sprocess_command); | |
7581 | defsubr (&Sset_process_buffer); | |
7582 | defsubr (&Sprocess_buffer); | |
7583 | defsubr (&Sprocess_mark); | |
7584 | defsubr (&Sset_process_filter); | |
7585 | defsubr (&Sprocess_filter); | |
7586 | defsubr (&Sset_process_sentinel); | |
7587 | defsubr (&Sprocess_sentinel); | |
7588 | defsubr (&Sset_process_window_size); | |
7589 | defsubr (&Sset_process_inherit_coding_system_flag); | |
7590 | defsubr (&Sset_process_query_on_exit_flag); | |
7591 | defsubr (&Sprocess_query_on_exit_flag); | |
7592 | defsubr (&Sprocess_contact); | |
7593 | defsubr (&Sprocess_plist); | |
7594 | defsubr (&Sset_process_plist); | |
7595 | defsubr (&Slist_processes); | |
7596 | defsubr (&Sprocess_list); | |
7597 | defsubr (&Sstart_process); | |
f388c88a EZ |
7598 | defsubr (&Sserial_process_configure); |
7599 | defsubr (&Smake_serial_process); | |
f388c88a EZ |
7600 | defsubr (&Sset_network_process_option); |
7601 | defsubr (&Smake_network_process); | |
7602 | defsubr (&Sformat_network_address); | |
fce70521 | 7603 | #if defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
f388c88a EZ |
7604 | #ifdef SIOCGIFCONF |
7605 | defsubr (&Snetwork_interface_list); | |
7606 | #endif | |
7607 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
7608 | defsubr (&Snetwork_interface_info); | |
7609 | #endif | |
fce70521 | 7610 | #endif /* defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) */ |
f388c88a EZ |
7611 | #ifdef DATAGRAM_SOCKETS |
7612 | defsubr (&Sprocess_datagram_address); | |
7613 | defsubr (&Sset_process_datagram_address); | |
7614 | #endif | |
7615 | defsubr (&Saccept_process_output); | |
7616 | defsubr (&Sprocess_send_region); | |
7617 | defsubr (&Sprocess_send_string); | |
7618 | defsubr (&Sinterrupt_process); | |
7619 | defsubr (&Skill_process); | |
7620 | defsubr (&Squit_process); | |
7621 | defsubr (&Sstop_process); | |
7622 | defsubr (&Scontinue_process); | |
7623 | defsubr (&Sprocess_running_child_p); | |
7624 | defsubr (&Sprocess_send_eof); | |
7625 | defsubr (&Ssignal_process); | |
7626 | defsubr (&Swaiting_for_user_input_p); | |
7627 | defsubr (&Sprocess_type); | |
7628 | defsubr (&Sset_process_coding_system); | |
7629 | defsubr (&Sprocess_coding_system); | |
7630 | defsubr (&Sset_process_filter_multibyte); | |
7631 | defsubr (&Sprocess_filter_multibyte_p); | |
7632 | ||
7633 | #endif /* subprocesses */ | |
7634 | ||
6720a7fb | 7635 | defsubr (&Sget_buffer_process); |
52a1b894 | 7636 | defsubr (&Sprocess_inherit_coding_system_flag); |
934e2a68 | 7637 | defsubr (&Slist_system_processes); |
a20878b6 | 7638 | defsubr (&Sprocess_attributes); |
6720a7fb JB |
7639 | } |
7640 | ||
6b61353c KH |
7641 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 |
7642 | (do not change this comment) */ |