Commit | Line | Data |
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d0d6b7c5 | 1 | /* Asynchronous subprocess control for GNU Emacs. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, |
3 | 1996, 1998, 1999, 2001, 2002, 2003, 2004, | |
4 | 2005 Free Software Foundation, Inc. | |
d0d6b7c5 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
1dc77cc3 | 10 | the Free Software Foundation; either version 2, or (at your option) |
d0d6b7c5 JB |
11 | any later version. |
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 | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
d0d6b7c5 JB |
22 | |
23 | ||
18160b98 | 24 | #include <config.h> |
68c45bf0 PE |
25 | #include <signal.h> |
26 | ||
6720a7fb JB |
27 | /* This file is split into two parts by the following preprocessor |
28 | conditional. The 'then' clause contains all of the support for | |
29 | asynchronous subprocesses. The 'else' clause contains stub | |
30 | versions of some of the asynchronous subprocess routines that are | |
31 | often called elsewhere in Emacs, so we don't have to #ifdef the | |
32 | sections that call them. */ | |
33 | ||
34 | \f | |
d0d6b7c5 | 35 | #ifdef subprocesses |
d0d6b7c5 JB |
36 | |
37 | #include <stdio.h> | |
38 | #include <errno.h> | |
39 | #include <setjmp.h> | |
40 | #include <sys/types.h> /* some typedefs are used in sys/file.h */ | |
41 | #include <sys/file.h> | |
42 | #include <sys/stat.h> | |
93b4f699 RS |
43 | #ifdef HAVE_UNISTD_H |
44 | #include <unistd.h> | |
45 | #endif | |
d0d6b7c5 | 46 | |
f22ac298 | 47 | #if defined(WINDOWSNT) || defined(UNIX98_PTYS) |
e98d950b RS |
48 | #include <stdlib.h> |
49 | #include <fcntl.h> | |
50 | #endif /* not WINDOWSNT */ | |
51 | ||
d0d6b7c5 JB |
52 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
53 | #include <sys/socket.h> | |
54 | #include <netdb.h> | |
55 | #include <netinet/in.h> | |
56 | #include <arpa/inet.h> | |
f2cfa9a6 RS |
57 | #ifdef NEED_NET_ERRNO_H |
58 | #include <net/errno.h> | |
59 | #endif /* NEED_NET_ERRNO_H */ | |
e690ca94 KS |
60 | |
61 | /* Are local (unix) sockets supported? */ | |
28c6e94f | 62 | #if defined (HAVE_SYS_UN_H) && !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
e690ca94 KS |
63 | #if !defined (AF_LOCAL) && defined (AF_UNIX) |
64 | #define AF_LOCAL AF_UNIX | |
65 | #endif | |
66 | #ifdef AF_LOCAL | |
67 | #define HAVE_LOCAL_SOCKETS | |
68 | #include <sys/un.h> | |
69 | #endif | |
70 | #endif | |
d0d6b7c5 JB |
71 | #endif /* HAVE_SOCKETS */ |
72 | ||
827a1788 | 73 | /* TERM is a poor-man's SLIP, used on GNU/Linux. */ |
1d2c16fa RS |
74 | #ifdef TERM |
75 | #include <client.h> | |
76 | #endif | |
77 | ||
cf32fea0 PR |
78 | /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */ |
79 | #ifdef HAVE_BROKEN_INET_ADDR | |
79967d5e RS |
80 | #define IN_ADDR struct in_addr |
81 | #define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1) | |
82 | #else | |
83 | #define IN_ADDR unsigned long | |
84 | #define NUMERIC_ADDR_ERROR (numeric_addr == -1) | |
85 | #endif | |
86 | ||
6df54671 | 87 | #if defined(BSD_SYSTEM) || defined(STRIDE) |
d0d6b7c5 | 88 | #include <sys/ioctl.h> |
0ad77c54 | 89 | #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5) |
d0d6b7c5 JB |
90 | #include <fcntl.h> |
91 | #endif /* HAVE_PTYS and no O_NDELAY */ | |
6df54671 | 92 | #endif /* BSD_SYSTEM || STRIDE */ |
d0d6b7c5 | 93 | |
99e3d726 RS |
94 | #ifdef BROKEN_O_NONBLOCK |
95 | #undef O_NONBLOCK | |
96 | #endif /* BROKEN_O_NONBLOCK */ | |
97 | ||
d0d6b7c5 JB |
98 | #ifdef NEED_BSDTTY |
99 | #include <bsdtty.h> | |
100 | #endif | |
101 | ||
161933c7 KS |
102 | /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */ |
103 | #ifdef HAVE_SOCKETS | |
104 | #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H) | |
105 | /* sys/ioctl.h may have been included already */ | |
106 | #ifndef SIOCGIFADDR | |
107 | #include <sys/ioctl.h> | |
108 | #endif | |
109 | #include <net/if.h> | |
110 | #endif | |
111 | #endif | |
112 | ||
d0d6b7c5 JB |
113 | #ifdef IRIS |
114 | #include <sys/sysmacros.h> /* for "minor" */ | |
115 | #endif /* not IRIS */ | |
177c0ea7 | 116 | |
e62cab61 DL |
117 | #ifdef HAVE_SYS_WAIT |
118 | #include <sys/wait.h> | |
119 | #endif | |
d0d6b7c5 | 120 | |
805b0439 EZ |
121 | /* Disable IPv6 support for w32 until someone figures out how to do it |
122 | properly. */ | |
123 | #ifdef WINDOWSNT | |
124 | # ifdef AF_INET6 | |
125 | # undef AF_INET6 | |
126 | # endif | |
127 | #endif | |
128 | ||
fa8459a3 | 129 | #include "lisp.h" |
d0d6b7c5 | 130 | #include "systime.h" |
36ebaafa | 131 | #include "systty.h" |
d0d6b7c5 | 132 | |
d0d6b7c5 JB |
133 | #include "window.h" |
134 | #include "buffer.h" | |
0fa1789e KH |
135 | #include "charset.h" |
136 | #include "coding.h" | |
d0d6b7c5 JB |
137 | #include "process.h" |
138 | #include "termhooks.h" | |
139 | #include "termopts.h" | |
140 | #include "commands.h" | |
3ec68006 | 141 | #include "keyboard.h" |
1dc77cc3 | 142 | #include "frame.h" |
ececcbec | 143 | #include "blockinput.h" |
dfcf069d | 144 | #include "dispextern.h" |
e0016554 | 145 | #include "composite.h" |
30904ab7 | 146 | #include "atimer.h" |
d0d6b7c5 | 147 | |
dd2281ae | 148 | Lisp_Object Qprocessp; |
dd2a17ab | 149 | Lisp_Object Qrun, Qstop, Qsignal; |
e690ca94 | 150 | Lisp_Object Qopen, Qclosed, Qconnect, Qfailed, Qlisten; |
e1652a86 KS |
151 | Lisp_Object Qlocal, Qipv4, Qdatagram; |
152 | #ifdef AF_INET6 | |
153 | Lisp_Object Qipv6; | |
154 | #endif | |
9057ff80 | 155 | Lisp_Object QCname, QCbuffer, QChost, QCservice, QCtype; |
e690ca94 | 156 | Lisp_Object QClocal, QCremote, QCcoding; |
9057ff80 | 157 | Lisp_Object QCserver, QCnowait, QCnoquery, QCstop; |
faa7db08 | 158 | Lisp_Object QCsentinel, QClog, QCoptions, QCplist; |
7392e23c | 159 | Lisp_Object QCfilter_multibyte; |
6545aada | 160 | Lisp_Object Qlast_nonmenu_event; |
3635ecad JR |
161 | /* QCfamily is declared and initialized in xfaces.c, |
162 | QCfilter in keyboard.c. */ | |
163 | extern Lisp_Object QCfamily, QCfilter; | |
164 | ||
d0d6b7c5 JB |
165 | /* Qexit is declared and initialized in eval.c. */ |
166 | ||
e0f712ba AC |
167 | /* QCfamily is defined in xfaces.c. */ |
168 | extern Lisp_Object QCfamily; | |
169 | /* QCfilter is defined in keyboard.c. */ | |
170 | extern Lisp_Object QCfilter; | |
171 | ||
d0d6b7c5 | 172 | /* a process object is a network connection when its childp field is neither |
365aee82 | 173 | Qt nor Qnil but is instead a property list (KEY VAL ...). */ |
d0d6b7c5 JB |
174 | |
175 | #ifdef HAVE_SOCKETS | |
de282a05 | 176 | #define NETCONN_P(p) (GC_CONSP (XPROCESS (p)->childp)) |
e690ca94 | 177 | #define NETCONN1_P(p) (GC_CONSP ((p)->childp)) |
d0d6b7c5 JB |
178 | #else |
179 | #define NETCONN_P(p) 0 | |
e690ca94 | 180 | #define NETCONN1_P(p) 0 |
d0d6b7c5 JB |
181 | #endif /* HAVE_SOCKETS */ |
182 | ||
183 | /* Define first descriptor number available for subprocesses. */ | |
184 | #ifdef VMS | |
185 | #define FIRST_PROC_DESC 1 | |
186 | #else /* Not VMS */ | |
187 | #define FIRST_PROC_DESC 3 | |
188 | #endif | |
189 | ||
190 | /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals | |
191 | testing SIGCHLD. */ | |
192 | ||
193 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
194 | #define SIGCHLD SIGCLD | |
195 | #endif /* SIGCLD */ | |
196 | ||
197 | #include "syssignal.h" | |
198 | ||
889255b4 | 199 | #include "syswait.h" |
d0d6b7c5 | 200 | |
d9e7c622 | 201 | extern char *get_operating_system_release (); |
41d03b9a | 202 | |
3ec68006 | 203 | #ifndef USE_CRT_DLL |
b062d1fe | 204 | extern int errno; |
3ec68006 | 205 | #endif |
b062d1fe | 206 | #ifdef VMS |
d0d6b7c5 | 207 | extern char *sys_errlist[]; |
b062d1fe | 208 | #endif |
d0d6b7c5 | 209 | |
5f0929a7 RS |
210 | #ifndef HAVE_H_ERRNO |
211 | extern int h_errno; | |
212 | #endif | |
213 | ||
d0d6b7c5 JB |
214 | /* t means use pty, nil means use a pipe, |
215 | maybe other values to come. */ | |
dd2281ae | 216 | static Lisp_Object Vprocess_connection_type; |
d0d6b7c5 JB |
217 | |
218 | #ifdef SKTPAIR | |
219 | #ifndef HAVE_SOCKETS | |
220 | #include <sys/socket.h> | |
221 | #endif | |
222 | #endif /* SKTPAIR */ | |
223 | ||
17d02632 KH |
224 | /* These next two vars are non-static since sysdep.c uses them in the |
225 | emulation of `select'. */ | |
d0d6b7c5 | 226 | /* Number of events of change of status of a process. */ |
17d02632 | 227 | int process_tick; |
d0d6b7c5 | 228 | /* Number of events for which the user or sentinel has been notified. */ |
17d02632 | 229 | int update_tick; |
d0d6b7c5 | 230 | |
dd2a17ab KS |
231 | /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */ |
232 | ||
233 | #ifdef BROKEN_NON_BLOCKING_CONNECT | |
234 | #undef NON_BLOCKING_CONNECT | |
235 | #else | |
236 | #ifndef NON_BLOCKING_CONNECT | |
237 | #ifdef HAVE_SOCKETS | |
238 | #ifdef HAVE_SELECT | |
239 | #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX) | |
240 | #if defined (O_NONBLOCK) || defined (O_NDELAY) | |
241 | #if defined (EWOULDBLOCK) || defined (EINPROGRESS) | |
242 | #define NON_BLOCKING_CONNECT | |
243 | #endif /* EWOULDBLOCK || EINPROGRESS */ | |
244 | #endif /* O_NONBLOCK || O_NDELAY */ | |
245 | #endif /* HAVE_GETPEERNAME || GNU_LINUX */ | |
246 | #endif /* HAVE_SELECT */ | |
247 | #endif /* HAVE_SOCKETS */ | |
248 | #endif /* NON_BLOCKING_CONNECT */ | |
249 | #endif /* BROKEN_NON_BLOCKING_CONNECT */ | |
250 | ||
e690ca94 KS |
251 | /* Define DATAGRAM_SOCKETS if datagrams can be used safely on |
252 | this system. We need to read full packets, so we need a | |
253 | "non-destructive" select. So we require either native select, | |
254 | or emulation of select using FIONREAD. */ | |
255 | ||
e690ca94 KS |
256 | #ifdef BROKEN_DATAGRAM_SOCKETS |
257 | #undef DATAGRAM_SOCKETS | |
258 | #else | |
259 | #ifndef DATAGRAM_SOCKETS | |
260 | #ifdef HAVE_SOCKETS | |
261 | #if defined (HAVE_SELECT) || defined (FIONREAD) | |
262 | #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE) | |
263 | #define DATAGRAM_SOCKETS | |
264 | #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */ | |
265 | #endif /* HAVE_SELECT || FIONREAD */ | |
266 | #endif /* HAVE_SOCKETS */ | |
267 | #endif /* DATAGRAM_SOCKETS */ | |
268 | #endif /* BROKEN_DATAGRAM_SOCKETS */ | |
269 | ||
dd2a17ab KS |
270 | #ifdef TERM |
271 | #undef NON_BLOCKING_CONNECT | |
e690ca94 | 272 | #undef DATAGRAM_SOCKETS |
dd2a17ab KS |
273 | #endif |
274 | ||
2d942bfa KS |
275 | #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING) |
276 | #ifdef EMACS_HAS_USECS | |
277 | #define ADAPTIVE_READ_BUFFERING | |
278 | #endif | |
279 | #endif | |
280 | ||
281 | #ifdef ADAPTIVE_READ_BUFFERING | |
282 | #define READ_OUTPUT_DELAY_INCREMENT 10000 | |
283 | #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5) | |
284 | #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7) | |
285 | ||
db853b7a KS |
286 | /* Number of processes which have a non-zero read_output_delay, |
287 | and therefore might be delayed for adaptive read buffering. */ | |
2d942bfa KS |
288 | |
289 | static int process_output_delay_count; | |
290 | ||
db853b7a | 291 | /* Non-zero if any process has non-nil read_output_skip. */ |
2d942bfa KS |
292 | |
293 | static int process_output_skip; | |
294 | ||
295 | /* Non-nil means to delay reading process output to improve buffering. | |
296 | A value of t means that delay is reset after each send, any other | |
db853b7a KS |
297 | non-nil value does not reset the delay. A value of nil disables |
298 | adaptive read buffering completely. */ | |
2d942bfa KS |
299 | static Lisp_Object Vprocess_adaptive_read_buffering; |
300 | #else | |
301 | #define process_output_delay_count 0 | |
302 | #endif | |
303 | ||
e690ca94 | 304 | |
5886acf9 | 305 | #include "sysselect.h" |
d0d6b7c5 | 306 | |
ff6daed3 KS |
307 | static int keyboard_bit_set P_ ((SELECT_TYPE *)); |
308 | static void deactivate_process P_ ((Lisp_Object)); | |
309 | static void status_notify P_ ((struct Lisp_Process *)); | |
310 | static int read_process_output P_ ((Lisp_Object, int)); | |
41d03b9a | 311 | |
583dcae4 | 312 | /* If we support a window system, turn on the code to poll periodically |
44ade2e9 | 313 | to detect C-g. It isn't actually used when doing interrupt input. */ |
583dcae4 | 314 | #ifdef HAVE_WINDOW_SYSTEM |
44ade2e9 RS |
315 | #define POLL_FOR_INPUT |
316 | #endif | |
317 | ||
a69281ff | 318 | /* Mask of bits indicating the descriptors that we wait for input on. */ |
d0d6b7c5 | 319 | |
dd2281ae RS |
320 | static SELECT_TYPE input_wait_mask; |
321 | ||
a69281ff RS |
322 | /* Mask that excludes keyboard input descriptor (s). */ |
323 | ||
324 | static SELECT_TYPE non_keyboard_wait_mask; | |
325 | ||
b5dc1c83 RS |
326 | /* Mask that excludes process input descriptor (s). */ |
327 | ||
328 | static SELECT_TYPE non_process_wait_mask; | |
329 | ||
bad49fc7 | 330 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
331 | /* Mask of bits indicating the descriptors that we wait for connect to |
332 | complete on. Once they complete, they are removed from this mask | |
333 | and added to the input_wait_mask and non_keyboard_wait_mask. */ | |
334 | ||
335 | static SELECT_TYPE connect_wait_mask; | |
336 | ||
337 | /* Number of bits set in connect_wait_mask. */ | |
338 | static int num_pending_connects; | |
339 | ||
bad49fc7 KS |
340 | #define IF_NON_BLOCKING_CONNECT(s) s |
341 | #else | |
342 | #define IF_NON_BLOCKING_CONNECT(s) | |
343 | #endif | |
344 | ||
7d0e672e RS |
345 | /* The largest descriptor currently in use for a process object. */ |
346 | static int max_process_desc; | |
347 | ||
a69281ff RS |
348 | /* The largest descriptor currently in use for keyboard input. */ |
349 | static int max_keyboard_desc; | |
d0d6b7c5 | 350 | |
dd2281ae RS |
351 | /* Nonzero means delete a process right away if it exits. */ |
352 | static int delete_exited_processes; | |
d0d6b7c5 JB |
353 | |
354 | /* Indexed by descriptor, gives the process (if any) for that descriptor */ | |
41f3aa98 | 355 | Lisp_Object chan_process[MAXDESC]; |
d0d6b7c5 JB |
356 | |
357 | /* Alist of elements (NAME . PROCESS) */ | |
41f3aa98 | 358 | Lisp_Object Vprocess_alist; |
d0d6b7c5 JB |
359 | |
360 | /* Buffered-ahead input char from process, indexed by channel. | |
361 | -1 means empty (no char is buffered). | |
362 | Used on sys V where the only way to tell if there is any | |
363 | output from the process is to read at least one char. | |
364 | Always -1 on systems that support FIONREAD. */ | |
365 | ||
e98d950b RS |
366 | /* Don't make static; need to access externally. */ |
367 | int proc_buffered_char[MAXDESC]; | |
dd2281ae | 368 | |
0fa1789e | 369 | /* Table of `struct coding-system' for each process. */ |
c7580538 KH |
370 | static struct coding_system *proc_decode_coding_system[MAXDESC]; |
371 | static struct coding_system *proc_encode_coding_system[MAXDESC]; | |
0fa1789e | 372 | |
e690ca94 KS |
373 | #ifdef DATAGRAM_SOCKETS |
374 | /* Table of `partner address' for datagram sockets. */ | |
375 | struct sockaddr_and_len { | |
376 | struct sockaddr *sa; | |
377 | int len; | |
378 | } datagram_address[MAXDESC]; | |
379 | #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0) | |
bed9664a | 380 | #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0) |
e690ca94 KS |
381 | #else |
382 | #define DATAGRAM_CHAN_P(chan) (0) | |
383 | #define DATAGRAM_CONN_P(proc) (0) | |
384 | #endif | |
385 | ||
dd2281ae | 386 | static Lisp_Object get_process (); |
dd2a17ab | 387 | static void exec_sentinel (); |
93b4f699 | 388 | |
fb4c3627 | 389 | extern EMACS_TIME timer_check (); |
5de50bfb | 390 | extern int timers_run; |
fb4c3627 | 391 | |
93b4f699 RS |
392 | /* Maximum number of bytes to send to a pty without an eof. */ |
393 | static int pty_max_bytes; | |
3b9a3dfa | 394 | |
875e6b94 | 395 | #ifdef HAVE_PTYS |
e62cab61 DL |
396 | #ifdef HAVE_PTY_H |
397 | #include <pty.h> | |
398 | #endif | |
875e6b94 | 399 | /* The file name of the pty opened by allocate_pty. */ |
3b9a3dfa RS |
400 | |
401 | static char pty_name[24]; | |
875e6b94 | 402 | #endif |
d0d6b7c5 JB |
403 | \f |
404 | /* Compute the Lisp form of the process status, p->status, from | |
405 | the numeric status that was returned by `wait'. */ | |
406 | ||
ff6daed3 | 407 | static Lisp_Object status_convert (); |
f9738840 | 408 | |
ff6daed3 | 409 | static void |
d0d6b7c5 JB |
410 | update_status (p) |
411 | struct Lisp_Process *p; | |
412 | { | |
413 | union { int i; WAITTYPE wt; } u; | |
414 | u.i = XFASTINT (p->raw_status_low) + (XFASTINT (p->raw_status_high) << 16); | |
415 | p->status = status_convert (u.wt); | |
416 | p->raw_status_low = Qnil; | |
417 | p->raw_status_high = Qnil; | |
418 | } | |
419 | ||
177c0ea7 | 420 | /* Convert a process status word in Unix format to |
d0d6b7c5 JB |
421 | the list that we use internally. */ |
422 | ||
ff6daed3 | 423 | static Lisp_Object |
d0d6b7c5 JB |
424 | status_convert (w) |
425 | WAITTYPE w; | |
426 | { | |
427 | if (WIFSTOPPED (w)) | |
428 | return Fcons (Qstop, Fcons (make_number (WSTOPSIG (w)), Qnil)); | |
429 | else if (WIFEXITED (w)) | |
430 | return Fcons (Qexit, Fcons (make_number (WRETCODE (w)), | |
431 | WCOREDUMP (w) ? Qt : Qnil)); | |
432 | else if (WIFSIGNALED (w)) | |
433 | return Fcons (Qsignal, Fcons (make_number (WTERMSIG (w)), | |
434 | WCOREDUMP (w) ? Qt : Qnil)); | |
435 | else | |
436 | return Qrun; | |
437 | } | |
438 | ||
439 | /* Given a status-list, extract the three pieces of information | |
440 | and store them individually through the three pointers. */ | |
441 | ||
ff6daed3 | 442 | static void |
d0d6b7c5 JB |
443 | decode_status (l, symbol, code, coredump) |
444 | Lisp_Object l; | |
445 | Lisp_Object *symbol; | |
446 | int *code; | |
447 | int *coredump; | |
448 | { | |
449 | Lisp_Object tem; | |
450 | ||
bcd69aea | 451 | if (SYMBOLP (l)) |
d0d6b7c5 JB |
452 | { |
453 | *symbol = l; | |
454 | *code = 0; | |
455 | *coredump = 0; | |
456 | } | |
457 | else | |
458 | { | |
70949dac KR |
459 | *symbol = XCAR (l); |
460 | tem = XCDR (l); | |
461 | *code = XFASTINT (XCAR (tem)); | |
462 | tem = XCDR (tem); | |
d0d6b7c5 JB |
463 | *coredump = !NILP (tem); |
464 | } | |
465 | } | |
466 | ||
467 | /* Return a string describing a process status list. */ | |
468 | ||
116c423c KS |
469 | static Lisp_Object |
470 | status_message (p) | |
471 | struct Lisp_Process *p; | |
d0d6b7c5 | 472 | { |
116c423c | 473 | Lisp_Object status = p->status; |
d0d6b7c5 JB |
474 | Lisp_Object symbol; |
475 | int code, coredump; | |
476 | Lisp_Object string, string2; | |
477 | ||
478 | decode_status (status, &symbol, &code, &coredump); | |
479 | ||
480 | if (EQ (symbol, Qsignal) || EQ (symbol, Qstop)) | |
481 | { | |
68c45bf0 | 482 | char *signame; |
ca9c0567 | 483 | synchronize_system_messages_locale (); |
68c45bf0 | 484 | signame = strsignal (code); |
b97ad9ea RS |
485 | if (signame == 0) |
486 | signame = "unknown"; | |
487 | string = build_string (signame); | |
d0d6b7c5 | 488 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
a814cc69 | 489 | SSET (string, 0, DOWNCASE (SREF (string, 0))); |
d0d6b7c5 JB |
490 | return concat2 (string, string2); |
491 | } | |
492 | else if (EQ (symbol, Qexit)) | |
493 | { | |
116c423c KS |
494 | if (NETCONN1_P (p)) |
495 | return build_string (code == 0 ? "deleted\n" : "connection broken by remote peer\n"); | |
d0d6b7c5 JB |
496 | if (code == 0) |
497 | return build_string ("finished\n"); | |
f2980264 | 498 | string = Fnumber_to_string (make_number (code)); |
d0d6b7c5 | 499 | string2 = build_string (coredump ? " (core dumped)\n" : "\n"); |
e690ca94 KS |
500 | return concat3 (build_string ("exited abnormally with code "), |
501 | string, string2); | |
d0d6b7c5 | 502 | } |
dd2a17ab KS |
503 | else if (EQ (symbol, Qfailed)) |
504 | { | |
505 | string = Fnumber_to_string (make_number (code)); | |
506 | string2 = build_string ("\n"); | |
e690ca94 KS |
507 | return concat3 (build_string ("failed with code "), |
508 | string, string2); | |
dd2a17ab | 509 | } |
d0d6b7c5 JB |
510 | else |
511 | return Fcopy_sequence (Fsymbol_name (symbol)); | |
512 | } | |
513 | \f | |
514 | #ifdef HAVE_PTYS | |
d0d6b7c5 | 515 | |
875e6b94 KH |
516 | /* Open an available pty, returning a file descriptor. |
517 | Return -1 on failure. | |
518 | The file name of the terminal corresponding to the pty | |
519 | is left in the variable pty_name. */ | |
520 | ||
ff6daed3 | 521 | static int |
d0d6b7c5 JB |
522 | allocate_pty () |
523 | { | |
dfcf069d | 524 | register int c, i; |
d0d6b7c5 JB |
525 | int fd; |
526 | ||
527 | #ifdef PTY_ITERATION | |
528 | PTY_ITERATION | |
529 | #else | |
530 | for (c = FIRST_PTY_LETTER; c <= 'z'; c++) | |
531 | for (i = 0; i < 16; i++) | |
532 | #endif | |
533 | { | |
26d7389d | 534 | struct stat stb; /* Used in some PTY_OPEN. */ |
d0d6b7c5 JB |
535 | #ifdef PTY_NAME_SPRINTF |
536 | PTY_NAME_SPRINTF | |
d0d6b7c5 JB |
537 | #else |
538 | sprintf (pty_name, "/dev/pty%c%x", c, i); | |
d0d6b7c5 JB |
539 | #endif /* no PTY_NAME_SPRINTF */ |
540 | ||
4d7c105e RS |
541 | #ifdef PTY_OPEN |
542 | PTY_OPEN; | |
543 | #else /* no PTY_OPEN */ | |
34967d0f | 544 | { |
34967d0f SM |
545 | # ifdef IRIS |
546 | /* Unusual IRIS code */ | |
547 | *ptyv = emacs_open ("/dev/ptc", O_RDWR | O_NDELAY, 0); | |
548 | if (fd < 0) | |
549 | return -1; | |
550 | if (fstat (fd, &stb) < 0) | |
551 | return -1; | |
552 | # else /* not IRIS */ | |
553 | { /* Some systems name their pseudoterminals so that there are gaps in | |
554 | the usual sequence - for example, on HP9000/S700 systems, there | |
555 | are no pseudoterminals with names ending in 'f'. So we wait for | |
556 | three failures in a row before deciding that we've reached the | |
557 | end of the ptys. */ | |
558 | int failed_count = 0; | |
f3d9532b | 559 | |
34967d0f SM |
560 | if (stat (pty_name, &stb) < 0) |
561 | { | |
562 | failed_count++; | |
563 | if (failed_count >= 3) | |
564 | return -1; | |
565 | } | |
566 | else | |
567 | failed_count = 0; | |
32676c08 | 568 | } |
34967d0f SM |
569 | # ifdef O_NONBLOCK |
570 | fd = emacs_open (pty_name, O_RDWR | O_NONBLOCK, 0); | |
571 | # else | |
572 | fd = emacs_open (pty_name, O_RDWR | O_NDELAY, 0); | |
573 | # endif | |
574 | # endif /* not IRIS */ | |
575 | } | |
4d7c105e | 576 | #endif /* no PTY_OPEN */ |
d0d6b7c5 JB |
577 | |
578 | if (fd >= 0) | |
579 | { | |
580 | /* check to make certain that both sides are available | |
581 | this avoids a nasty yet stupid bug in rlogins */ | |
582 | #ifdef PTY_TTY_NAME_SPRINTF | |
583 | PTY_TTY_NAME_SPRINTF | |
d0d6b7c5 JB |
584 | #else |
585 | sprintf (pty_name, "/dev/tty%c%x", c, i); | |
d0d6b7c5 JB |
586 | #endif /* no PTY_TTY_NAME_SPRINTF */ |
587 | #ifndef UNIPLUS | |
588 | if (access (pty_name, 6) != 0) | |
589 | { | |
68c45bf0 | 590 | emacs_close (fd); |
34967d0f | 591 | # if !defined(IRIS) && !defined(__sgi) |
d0d6b7c5 | 592 | continue; |
34967d0f | 593 | # else |
d0d6b7c5 | 594 | return -1; |
34967d0f | 595 | # endif /* IRIS */ |
d0d6b7c5 JB |
596 | } |
597 | #endif /* not UNIPLUS */ | |
598 | setup_pty (fd); | |
599 | return fd; | |
600 | } | |
601 | } | |
602 | return -1; | |
603 | } | |
604 | #endif /* HAVE_PTYS */ | |
605 | \f | |
ff6daed3 | 606 | static Lisp_Object |
d0d6b7c5 JB |
607 | make_process (name) |
608 | Lisp_Object name; | |
609 | { | |
610 | register Lisp_Object val, tem, name1; | |
611 | register struct Lisp_Process *p; | |
612 | char suffix[10]; | |
613 | register int i; | |
614 | ||
98423852 | 615 | p = allocate_process (); |
23d6bb9c | 616 | |
1d056e64 KH |
617 | XSETINT (p->infd, -1); |
618 | XSETINT (p->outfd, -1); | |
22719df2 KH |
619 | XSETFASTINT (p->pid, 0); |
620 | XSETFASTINT (p->tick, 0); | |
621 | XSETFASTINT (p->update_tick, 0); | |
d0d6b7c5 JB |
622 | p->raw_status_low = Qnil; |
623 | p->raw_status_high = Qnil; | |
624 | p->status = Qrun; | |
625 | p->mark = Fmake_marker (); | |
626 | ||
2d942bfa KS |
627 | #ifdef ADAPTIVE_READ_BUFFERING |
628 | p->adaptive_read_buffering = Qnil; | |
629 | XSETFASTINT (p->read_output_delay, 0); | |
630 | p->read_output_skip = Qnil; | |
631 | #endif | |
632 | ||
d0d6b7c5 JB |
633 | /* If name is already in use, modify it until it is unused. */ |
634 | ||
635 | name1 = name; | |
636 | for (i = 1; ; i++) | |
637 | { | |
638 | tem = Fget_process (name1); | |
639 | if (NILP (tem)) break; | |
640 | sprintf (suffix, "<%d>", i); | |
641 | name1 = concat2 (name, build_string (suffix)); | |
642 | } | |
643 | name = name1; | |
644 | p->name = name; | |
23d6bb9c | 645 | XSETPROCESS (val, p); |
d0d6b7c5 JB |
646 | Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist); |
647 | return val; | |
648 | } | |
649 | ||
ff6daed3 | 650 | static void |
d0d6b7c5 JB |
651 | remove_process (proc) |
652 | register Lisp_Object proc; | |
653 | { | |
654 | register Lisp_Object pair; | |
655 | ||
656 | pair = Frassq (proc, Vprocess_alist); | |
657 | Vprocess_alist = Fdelq (pair, Vprocess_alist); | |
d0d6b7c5 JB |
658 | |
659 | deactivate_process (proc); | |
660 | } | |
03f04413 KH |
661 | |
662 | /* Setup coding systems of PROCESS. */ | |
663 | ||
664 | void | |
665 | setup_process_coding_systems (process) | |
666 | Lisp_Object process; | |
667 | { | |
668 | struct Lisp_Process *p = XPROCESS (process); | |
669 | int inch = XINT (p->infd); | |
670 | int outch = XINT (p->outfd); | |
671 | ||
20f1ef2e KH |
672 | if (inch < 0 || outch < 0) |
673 | return; | |
674 | ||
03f04413 KH |
675 | if (!proc_decode_coding_system[inch]) |
676 | proc_decode_coding_system[inch] | |
677 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
678 | setup_coding_system (p->decode_coding_system, | |
679 | proc_decode_coding_system[inch]); | |
680 | if (! NILP (p->filter)) | |
681 | { | |
682 | if (NILP (p->filter_multibyte)) | |
683 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
684 | } | |
685 | else if (BUFFERP (p->buffer)) | |
686 | { | |
687 | if (NILP (XBUFFER (p->buffer)->enable_multibyte_characters)) | |
688 | setup_raw_text_coding_system (proc_decode_coding_system[inch]); | |
689 | } | |
690 | ||
691 | if (!proc_encode_coding_system[outch]) | |
692 | proc_encode_coding_system[outch] | |
693 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
694 | setup_coding_system (p->encode_coding_system, | |
695 | proc_encode_coding_system[outch]); | |
696 | } | |
d0d6b7c5 JB |
697 | \f |
698 | DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0, | |
fdb82f93 PJ |
699 | doc: /* Return t if OBJECT is a process. */) |
700 | (object) | |
4ee3e309 | 701 | Lisp_Object object; |
d0d6b7c5 | 702 | { |
4ee3e309 | 703 | return PROCESSP (object) ? Qt : Qnil; |
d0d6b7c5 JB |
704 | } |
705 | ||
706 | DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0, | |
fdb82f93 PJ |
707 | doc: /* Return the process named NAME, or nil if there is none. */) |
708 | (name) | |
d0d6b7c5 JB |
709 | register Lisp_Object name; |
710 | { | |
bcd69aea | 711 | if (PROCESSP (name)) |
d0d6b7c5 | 712 | return name; |
b7826503 | 713 | CHECK_STRING (name); |
d0d6b7c5 JB |
714 | return Fcdr (Fassoc (name, Vprocess_alist)); |
715 | } | |
716 | ||
717 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, | |
fdb82f93 PJ |
718 | doc: /* Return the (or a) process associated with BUFFER. |
719 | BUFFER may be a buffer or the name of one. */) | |
720 | (buffer) | |
4ee3e309 | 721 | register Lisp_Object buffer; |
d0d6b7c5 JB |
722 | { |
723 | register Lisp_Object buf, tail, proc; | |
724 | ||
4ee3e309 EN |
725 | if (NILP (buffer)) return Qnil; |
726 | buf = Fget_buffer (buffer); | |
d0d6b7c5 JB |
727 | if (NILP (buf)) return Qnil; |
728 | ||
729 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
730 | { | |
731 | proc = Fcdr (Fcar (tail)); | |
bcd69aea | 732 | if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf)) |
d0d6b7c5 JB |
733 | return proc; |
734 | } | |
735 | return Qnil; | |
736 | } | |
737 | ||
ebb9e16f JB |
738 | /* This is how commands for the user decode process arguments. It |
739 | accepts a process, a process name, a buffer, a buffer name, or nil. | |
740 | Buffers denote the first process in the buffer, and nil denotes the | |
741 | current buffer. */ | |
d0d6b7c5 | 742 | |
77b221b1 | 743 | static Lisp_Object |
d0d6b7c5 JB |
744 | get_process (name) |
745 | register Lisp_Object name; | |
746 | { | |
1619761d KH |
747 | register Lisp_Object proc, obj; |
748 | if (STRINGP (name)) | |
749 | { | |
750 | obj = Fget_process (name); | |
751 | if (NILP (obj)) | |
752 | obj = Fget_buffer (name); | |
753 | if (NILP (obj)) | |
d5db4077 | 754 | error ("Process %s does not exist", SDATA (name)); |
1619761d KH |
755 | } |
756 | else if (NILP (name)) | |
757 | obj = Fcurrent_buffer (); | |
d0d6b7c5 | 758 | else |
1619761d KH |
759 | obj = name; |
760 | ||
761 | /* Now obj should be either a buffer object or a process object. | |
762 | */ | |
763 | if (BUFFERP (obj)) | |
d0d6b7c5 | 764 | { |
1619761d | 765 | proc = Fget_buffer_process (obj); |
d0d6b7c5 | 766 | if (NILP (proc)) |
d5db4077 | 767 | error ("Buffer %s has no process", SDATA (XBUFFER (obj)->name)); |
d0d6b7c5 | 768 | } |
d0d6b7c5 | 769 | else |
1619761d | 770 | { |
b7826503 | 771 | CHECK_PROCESS (obj); |
1619761d KH |
772 | proc = obj; |
773 | } | |
774 | return proc; | |
d0d6b7c5 JB |
775 | } |
776 | ||
777 | DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0, | |
fdb82f93 PJ |
778 | doc: /* Delete PROCESS: kill it and forget about it immediately. |
779 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
780 | nil, indicating the current buffer's process. */) | |
781 | (process) | |
4ee3e309 | 782 | register Lisp_Object process; |
d0d6b7c5 | 783 | { |
ff6daed3 KS |
784 | register struct Lisp_Process *p; |
785 | ||
4ee3e309 | 786 | process = get_process (process); |
ff6daed3 KS |
787 | p = XPROCESS (process); |
788 | ||
789 | p->raw_status_low = Qnil; | |
790 | p->raw_status_high = Qnil; | |
791 | if (NETCONN1_P (p)) | |
d0d6b7c5 | 792 | { |
ff6daed3 KS |
793 | p->status = Fcons (Qexit, Fcons (make_number (0), Qnil)); |
794 | XSETINT (p->tick, ++process_tick); | |
795 | status_notify (p); | |
d0d6b7c5 | 796 | } |
ff6daed3 | 797 | else if (XINT (p->infd) >= 0) |
d0d6b7c5 | 798 | { |
4ee3e309 | 799 | Fkill_process (process, Qnil); |
d0d6b7c5 | 800 | /* Do this now, since remove_process will make sigchld_handler do nothing. */ |
ff6daed3 | 801 | p->status |
d0d6b7c5 | 802 | = Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)); |
ff6daed3 KS |
803 | XSETINT (p->tick, ++process_tick); |
804 | status_notify (p); | |
d0d6b7c5 | 805 | } |
116c423c | 806 | remove_process (process); |
d0d6b7c5 JB |
807 | return Qnil; |
808 | } | |
809 | \f | |
810 | DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0, | |
fdb82f93 PJ |
811 | doc: /* Return the status of PROCESS. |
812 | The returned value is one of the following symbols: | |
813 | run -- for a process that is running. | |
814 | stop -- for a process stopped but continuable. | |
815 | exit -- for a process that has exited. | |
816 | signal -- for a process that has got a fatal signal. | |
817 | open -- for a network stream connection that is open. | |
e690ca94 | 818 | listen -- for a network stream server that is listening. |
fdb82f93 | 819 | closed -- for a network stream connection that is closed. |
e4984112 KS |
820 | connect -- when waiting for a non-blocking connection to complete. |
821 | failed -- when a non-blocking connection has failed. | |
fdb82f93 PJ |
822 | nil -- if arg is a process name and no such process exists. |
823 | PROCESS may be a process, a buffer, the name of a process, or | |
824 | nil, indicating the current buffer's process. */) | |
825 | (process) | |
4ee3e309 | 826 | register Lisp_Object process; |
d0d6b7c5 JB |
827 | { |
828 | register struct Lisp_Process *p; | |
829 | register Lisp_Object status; | |
343f4114 | 830 | |
4ee3e309 EN |
831 | if (STRINGP (process)) |
832 | process = Fget_process (process); | |
343f4114 | 833 | else |
4ee3e309 | 834 | process = get_process (process); |
343f4114 | 835 | |
4ee3e309 EN |
836 | if (NILP (process)) |
837 | return process; | |
343f4114 | 838 | |
4ee3e309 | 839 | p = XPROCESS (process); |
d0d6b7c5 JB |
840 | if (!NILP (p->raw_status_low)) |
841 | update_status (p); | |
842 | status = p->status; | |
bcd69aea | 843 | if (CONSP (status)) |
70949dac | 844 | status = XCAR (status); |
e690ca94 | 845 | if (NETCONN1_P (p)) |
d0d6b7c5 | 846 | { |
e690ca94 | 847 | if (EQ (status, Qexit)) |
d0d6b7c5 | 848 | status = Qclosed; |
e690ca94 KS |
849 | else if (EQ (p->command, Qt)) |
850 | status = Qstop; | |
851 | else if (EQ (status, Qrun)) | |
852 | status = Qopen; | |
d0d6b7c5 JB |
853 | } |
854 | return status; | |
855 | } | |
856 | ||
857 | DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status, | |
858 | 1, 1, 0, | |
fdb82f93 PJ |
859 | doc: /* Return the exit status of PROCESS or the signal number that killed it. |
860 | If PROCESS has not yet exited or died, return 0. */) | |
861 | (process) | |
4ee3e309 | 862 | register Lisp_Object process; |
d0d6b7c5 | 863 | { |
b7826503 | 864 | CHECK_PROCESS (process); |
4ee3e309 EN |
865 | if (!NILP (XPROCESS (process)->raw_status_low)) |
866 | update_status (XPROCESS (process)); | |
867 | if (CONSP (XPROCESS (process)->status)) | |
70949dac | 868 | return XCAR (XCDR (XPROCESS (process)->status)); |
d0d6b7c5 JB |
869 | return make_number (0); |
870 | } | |
871 | ||
872 | DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0, | |
fdb82f93 | 873 | doc: /* Return the process id of PROCESS. |
f3d9532b | 874 | This is the pid of the external process which PROCESS uses or talks to. |
fdb82f93 PJ |
875 | For a network connection, this value is nil. */) |
876 | (process) | |
4ee3e309 | 877 | register Lisp_Object process; |
d0d6b7c5 | 878 | { |
b7826503 | 879 | CHECK_PROCESS (process); |
4ee3e309 | 880 | return XPROCESS (process)->pid; |
d0d6b7c5 JB |
881 | } |
882 | ||
883 | DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0, | |
fdb82f93 PJ |
884 | doc: /* Return the name of PROCESS, as a string. |
885 | This is the name of the program invoked in PROCESS, | |
886 | possibly modified to make it unique among process names. */) | |
887 | (process) | |
4ee3e309 | 888 | register Lisp_Object process; |
d0d6b7c5 | 889 | { |
b7826503 | 890 | CHECK_PROCESS (process); |
4ee3e309 | 891 | return XPROCESS (process)->name; |
d0d6b7c5 JB |
892 | } |
893 | ||
894 | DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0, | |
fdb82f93 PJ |
895 | doc: /* Return the command that was executed to start PROCESS. |
896 | This is a list of strings, the first string being the program executed | |
897 | and the rest of the strings being the arguments given to it. | |
898 | For a non-child channel, this is nil. */) | |
899 | (process) | |
4ee3e309 | 900 | register Lisp_Object process; |
d0d6b7c5 | 901 | { |
b7826503 | 902 | CHECK_PROCESS (process); |
4ee3e309 | 903 | return XPROCESS (process)->command; |
d0d6b7c5 JB |
904 | } |
905 | ||
3b9a3dfa | 906 | DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0, |
fdb82f93 PJ |
907 | doc: /* Return the name of the terminal PROCESS uses, or nil if none. |
908 | This is the terminal that the process itself reads and writes on, | |
909 | not the name of the pty that Emacs uses to talk with that terminal. */) | |
910 | (process) | |
4ee3e309 | 911 | register Lisp_Object process; |
3b9a3dfa | 912 | { |
b7826503 | 913 | CHECK_PROCESS (process); |
4ee3e309 | 914 | return XPROCESS (process)->tty_name; |
3b9a3dfa RS |
915 | } |
916 | ||
d0d6b7c5 | 917 | DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer, |
fdb82f93 PJ |
918 | 2, 2, 0, |
919 | doc: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */) | |
920 | (process, buffer) | |
4ee3e309 | 921 | register Lisp_Object process, buffer; |
d0d6b7c5 | 922 | { |
e690ca94 KS |
923 | struct Lisp_Process *p; |
924 | ||
b7826503 | 925 | CHECK_PROCESS (process); |
d0d6b7c5 | 926 | if (!NILP (buffer)) |
b7826503 | 927 | CHECK_BUFFER (buffer); |
e690ca94 KS |
928 | p = XPROCESS (process); |
929 | p->buffer = buffer; | |
930 | if (NETCONN1_P (p)) | |
931 | p->childp = Fplist_put (p->childp, QCbuffer, buffer); | |
03f04413 | 932 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
933 | return buffer; |
934 | } | |
935 | ||
936 | DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer, | |
fdb82f93 PJ |
937 | 1, 1, 0, |
938 | doc: /* Return the buffer PROCESS is associated with. | |
939 | Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */) | |
940 | (process) | |
4ee3e309 | 941 | register Lisp_Object process; |
d0d6b7c5 | 942 | { |
b7826503 | 943 | CHECK_PROCESS (process); |
4ee3e309 | 944 | return XPROCESS (process)->buffer; |
d0d6b7c5 JB |
945 | } |
946 | ||
947 | DEFUN ("process-mark", Fprocess_mark, Sprocess_mark, | |
fdb82f93 PJ |
948 | 1, 1, 0, |
949 | doc: /* Return the marker for the end of the last output from PROCESS. */) | |
950 | (process) | |
4ee3e309 | 951 | register Lisp_Object process; |
d0d6b7c5 | 952 | { |
b7826503 | 953 | CHECK_PROCESS (process); |
4ee3e309 | 954 | return XPROCESS (process)->mark; |
d0d6b7c5 JB |
955 | } |
956 | ||
957 | DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter, | |
fdb82f93 PJ |
958 | 2, 2, 0, |
959 | doc: /* Give PROCESS the filter function FILTER; nil means no filter. | |
960 | t means stop accepting output from the process. | |
3452df9e KS |
961 | |
962 | When a process has a filter, its buffer is not used for output. | |
963 | Instead, each time it does output, the entire string of output is | |
177c0ea7 | 964 | passed to the filter. |
3452df9e | 965 | |
fdb82f93 | 966 | The filter gets two arguments: the process and the string of output. |
3452df9e KS |
967 | The string argument is normally a multibyte string, except: |
968 | - if the process' input coding system is no-conversion or raw-text, | |
969 | it is a unibyte string (the non-converted input), or else | |
970 | - if `default-enable-multibyte-characters' is nil, it is a unibyte | |
971 | string (the result of converting the decoded input multibyte | |
972 | string to unibyte with `string-make-unibyte'). */) | |
fdb82f93 | 973 | (process, filter) |
4ee3e309 | 974 | register Lisp_Object process, filter; |
d0d6b7c5 | 975 | { |
471f86b9 | 976 | struct Lisp_Process *p; |
177c0ea7 | 977 | |
b7826503 | 978 | CHECK_PROCESS (process); |
471f86b9 GM |
979 | p = XPROCESS (process); |
980 | ||
981 | /* Don't signal an error if the process' input file descriptor | |
982 | is closed. This could make debugging Lisp more difficult, | |
983 | for example when doing something like | |
984 | ||
985 | (setq process (start-process ...)) | |
986 | (debug) | |
987 | (set-process-filter process ...) */ | |
177c0ea7 | 988 | |
471f86b9 | 989 | if (XINT (p->infd) >= 0) |
a69281ff | 990 | { |
e690ca94 | 991 | if (EQ (filter, Qt) && !EQ (p->status, Qlisten)) |
471f86b9 GM |
992 | { |
993 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
994 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
995 | } | |
e690ca94 KS |
996 | else if (EQ (p->filter, Qt) |
997 | && !EQ (p->command, Qt)) /* Network process not stopped. */ | |
471f86b9 GM |
998 | { |
999 | FD_SET (XINT (p->infd), &input_wait_mask); | |
1000 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
1001 | } | |
a69281ff | 1002 | } |
177c0ea7 | 1003 | |
471f86b9 | 1004 | p->filter = filter; |
e690ca94 KS |
1005 | if (NETCONN1_P (p)) |
1006 | p->childp = Fplist_put (p->childp, QCfilter, filter); | |
03f04413 | 1007 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1008 | return filter; |
1009 | } | |
1010 | ||
1011 | DEFUN ("process-filter", Fprocess_filter, Sprocess_filter, | |
fdb82f93 PJ |
1012 | 1, 1, 0, |
1013 | doc: /* Returns the filter function of PROCESS; nil if none. | |
1014 | See `set-process-filter' for more info on filter functions. */) | |
1015 | (process) | |
4ee3e309 | 1016 | register Lisp_Object process; |
d0d6b7c5 | 1017 | { |
b7826503 | 1018 | CHECK_PROCESS (process); |
4ee3e309 | 1019 | return XPROCESS (process)->filter; |
d0d6b7c5 JB |
1020 | } |
1021 | ||
1022 | DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel, | |
fdb82f93 PJ |
1023 | 2, 2, 0, |
1024 | doc: /* Give PROCESS the sentinel SENTINEL; nil for none. | |
1025 | The sentinel is called as a function when the process changes state. | |
1026 | It gets two arguments: the process, and a string describing the change. */) | |
1027 | (process, sentinel) | |
4ee3e309 | 1028 | register Lisp_Object process, sentinel; |
d0d6b7c5 | 1029 | { |
2ccf3102 KS |
1030 | struct Lisp_Process *p; |
1031 | ||
b7826503 | 1032 | CHECK_PROCESS (process); |
2ccf3102 KS |
1033 | p = XPROCESS (process); |
1034 | ||
1035 | p->sentinel = sentinel; | |
1036 | if (NETCONN1_P (p)) | |
1037 | p->childp = Fplist_put (p->childp, QCsentinel, sentinel); | |
d0d6b7c5 JB |
1038 | return sentinel; |
1039 | } | |
1040 | ||
1041 | DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel, | |
fdb82f93 PJ |
1042 | 1, 1, 0, |
1043 | doc: /* Return the sentinel of PROCESS; nil if none. | |
1044 | See `set-process-sentinel' for more info on sentinels. */) | |
1045 | (process) | |
4ee3e309 | 1046 | register Lisp_Object process; |
d0d6b7c5 | 1047 | { |
b7826503 | 1048 | CHECK_PROCESS (process); |
4ee3e309 | 1049 | return XPROCESS (process)->sentinel; |
d0d6b7c5 JB |
1050 | } |
1051 | ||
396df322 | 1052 | DEFUN ("set-process-window-size", Fset_process_window_size, |
fdb82f93 PJ |
1053 | Sset_process_window_size, 3, 3, 0, |
1054 | doc: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */) | |
1055 | (process, height, width) | |
4ee3e309 | 1056 | register Lisp_Object process, height, width; |
396df322 | 1057 | { |
b7826503 PJ |
1058 | CHECK_PROCESS (process); |
1059 | CHECK_NATNUM (height); | |
1060 | CHECK_NATNUM (width); | |
177c0ea7 | 1061 | |
989521fd | 1062 | if (XINT (XPROCESS (process)->infd) < 0 |
471f86b9 GM |
1063 | || set_window_size (XINT (XPROCESS (process)->infd), |
1064 | XINT (height), XINT (width)) <= 0) | |
396df322 RS |
1065 | return Qnil; |
1066 | else | |
1067 | return Qt; | |
1068 | } | |
1069 | ||
52a1b894 | 1070 | DEFUN ("set-process-inherit-coding-system-flag", |
fdb82f93 PJ |
1071 | Fset_process_inherit_coding_system_flag, |
1072 | Sset_process_inherit_coding_system_flag, 2, 2, 0, | |
1073 | doc: /* Determine whether buffer of PROCESS will inherit coding-system. | |
1074 | If the second argument FLAG is non-nil, then the variable | |
1075 | `buffer-file-coding-system' of the buffer associated with PROCESS | |
1076 | will be bound to the value of the coding system used to decode | |
1077 | the process output. | |
1078 | ||
1079 | This is useful when the coding system specified for the process buffer | |
1080 | leaves either the character code conversion or the end-of-line conversion | |
1081 | unspecified, or if the coding system used to decode the process output | |
1082 | is more appropriate for saving the process buffer. | |
1083 | ||
1084 | Binding the variable `inherit-process-coding-system' to non-nil before | |
1085 | starting the process is an alternative way of setting the inherit flag | |
1086 | for the process which will run. */) | |
1087 | (process, flag) | |
52a1b894 EZ |
1088 | register Lisp_Object process, flag; |
1089 | { | |
b7826503 | 1090 | CHECK_PROCESS (process); |
aa91317a | 1091 | XPROCESS (process)->inherit_coding_system_flag = flag; |
52a1b894 EZ |
1092 | return flag; |
1093 | } | |
1094 | ||
1095 | DEFUN ("process-inherit-coding-system-flag", | |
fdb82f93 PJ |
1096 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
1097 | 1, 1, 0, | |
1098 | doc: /* Return the value of inherit-coding-system flag for PROCESS. | |
1099 | If this flag is t, `buffer-file-coding-system' of the buffer | |
1100 | associated with PROCESS will inherit the coding system used to decode | |
1101 | the process output. */) | |
1102 | (process) | |
52a1b894 EZ |
1103 | register Lisp_Object process; |
1104 | { | |
b7826503 | 1105 | CHECK_PROCESS (process); |
aa91317a | 1106 | return XPROCESS (process)->inherit_coding_system_flag; |
52a1b894 EZ |
1107 | } |
1108 | ||
e690ca94 KS |
1109 | DEFUN ("set-process-query-on-exit-flag", |
1110 | Fset_process_query_on_exit_flag, Sset_process_query_on_exit_flag, | |
1111 | 2, 2, 0, | |
1112 | doc: /* Specify if query is needed for PROCESS when Emacs is exited. | |
f3d9532b | 1113 | If the second argument FLAG is non-nil, Emacs will query the user before |
e690ca94 KS |
1114 | exiting if PROCESS is running. */) |
1115 | (process, flag) | |
1116 | register Lisp_Object process, flag; | |
d0d6b7c5 | 1117 | { |
b7826503 | 1118 | CHECK_PROCESS (process); |
e690ca94 KS |
1119 | XPROCESS (process)->kill_without_query = Fnull (flag); |
1120 | return flag; | |
d0d6b7c5 | 1121 | } |
312c9964 | 1122 | |
e690ca94 KS |
1123 | DEFUN ("process-query-on-exit-flag", |
1124 | Fprocess_query_on_exit_flag, Sprocess_query_on_exit_flag, | |
fdb82f93 | 1125 | 1, 1, 0, |
f3d9532b | 1126 | doc: /* Return the current value of query-on-exit flag for PROCESS. */) |
fdb82f93 | 1127 | (process) |
de282a05 RS |
1128 | register Lisp_Object process; |
1129 | { | |
b7826503 | 1130 | CHECK_PROCESS (process); |
e690ca94 KS |
1131 | return Fnull (XPROCESS (process)->kill_without_query); |
1132 | } | |
1133 | ||
1134 | #ifdef DATAGRAM_SOCKETS | |
1135 | Lisp_Object Fprocess_datagram_address (); | |
1136 | #endif | |
1137 | ||
1138 | DEFUN ("process-contact", Fprocess_contact, Sprocess_contact, | |
1139 | 1, 2, 0, | |
1140 | doc: /* Return the contact info of PROCESS; t for a real child. | |
1141 | For a net connection, the value depends on the optional KEY arg. | |
1142 | If KEY is nil, value is a cons cell of the form (HOST SERVICE), | |
1143 | if KEY is t, the complete contact information for the connection is | |
1144 | returned, else the specific value for the keyword KEY is returned. | |
1145 | See `make-network-process' for a list of keywords. */) | |
1146 | (process, key) | |
1147 | register Lisp_Object process, key; | |
1148 | { | |
1149 | Lisp_Object contact; | |
1150 | ||
1151 | CHECK_PROCESS (process); | |
1152 | contact = XPROCESS (process)->childp; | |
1153 | ||
1154 | #ifdef DATAGRAM_SOCKETS | |
1155 | if (DATAGRAM_CONN_P (process) | |
1156 | && (EQ (key, Qt) || EQ (key, QCremote))) | |
177c0ea7 | 1157 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
1158 | Fprocess_datagram_address (process)); |
1159 | #endif | |
1160 | ||
1161 | if (!NETCONN_P (process) || EQ (key, Qt)) | |
1162 | return contact; | |
1163 | if (NILP (key)) | |
1164 | return Fcons (Fplist_get (contact, QChost), | |
1165 | Fcons (Fplist_get (contact, QCservice), Qnil)); | |
1166 | return Fplist_get (contact, key); | |
de282a05 RS |
1167 | } |
1168 | ||
faa7db08 KS |
1169 | DEFUN ("process-plist", Fprocess_plist, Sprocess_plist, |
1170 | 1, 1, 0, | |
1171 | doc: /* Return the plist of PROCESS. */) | |
1172 | (process) | |
1173 | register Lisp_Object process; | |
365aee82 | 1174 | { |
ac4a7584 | 1175 | CHECK_PROCESS (process); |
faa7db08 | 1176 | return XPROCESS (process)->plist; |
ac4a7584 | 1177 | } |
365aee82 | 1178 | |
faa7db08 KS |
1179 | DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist, |
1180 | 2, 2, 0, | |
26a086c6 | 1181 | doc: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */) |
faa7db08 KS |
1182 | (process, plist) |
1183 | register Lisp_Object process, plist; | |
ac4a7584 | 1184 | { |
365aee82 | 1185 | CHECK_PROCESS (process); |
faa7db08 | 1186 | CHECK_LIST (plist); |
365aee82 | 1187 | |
faa7db08 | 1188 | XPROCESS (process)->plist = plist; |
26a086c6 | 1189 | return plist; |
365aee82 KS |
1190 | } |
1191 | ||
312c9964 RS |
1192 | #if 0 /* Turned off because we don't currently record this info |
1193 | in the process. Perhaps add it. */ | |
1194 | DEFUN ("process-connection", Fprocess_connection, Sprocess_connection, 1, 1, 0, | |
fdb82f93 PJ |
1195 | doc: /* Return the connection type of PROCESS. |
1196 | The value is nil for a pipe, t or `pty' for a pty, or `stream' for | |
1197 | a socket connection. */) | |
1198 | (process) | |
312c9964 RS |
1199 | Lisp_Object process; |
1200 | { | |
1201 | return XPROCESS (process)->type; | |
1202 | } | |
1203 | #endif | |
991234f0 KS |
1204 | |
1205 | #ifdef HAVE_SOCKETS | |
1206 | DEFUN ("format-network-address", Fformat_network_address, Sformat_network_address, | |
0dccee41 | 1207 | 1, 2, 0, |
991234f0 | 1208 | doc: /* Convert network ADDRESS from internal format to a string. |
e1652a86 KS |
1209 | A 4 or 5 element vector represents an IPv4 address (with port number). |
1210 | An 8 or 9 element vector represents an IPv6 address (with port number). | |
0dccee41 | 1211 | If optional second argument OMIT-PORT is non-nil, don't include a port |
e1652a86 KS |
1212 | number in the string, even when present in ADDRESS. |
1213 | Returns nil if format of ADDRESS is invalid. */) | |
0dccee41 KS |
1214 | (address, omit_port) |
1215 | Lisp_Object address, omit_port; | |
991234f0 | 1216 | { |
991234f0 KS |
1217 | if (NILP (address)) |
1218 | return Qnil; | |
1219 | ||
1220 | if (STRINGP (address)) /* AF_LOCAL */ | |
1221 | return address; | |
1222 | ||
e1652a86 | 1223 | if (VECTORP (address)) /* AF_INET or AF_INET6 */ |
991234f0 KS |
1224 | { |
1225 | register struct Lisp_Vector *p = XVECTOR (address); | |
1226 | Lisp_Object args[6]; | |
0dccee41 | 1227 | int nargs, i; |
991234f0 | 1228 | |
e1652a86 | 1229 | if (p->size == 4 || (p->size == 5 && !NILP (omit_port))) |
0dccee41 KS |
1230 | { |
1231 | args[0] = build_string ("%d.%d.%d.%d"); | |
1232 | nargs = 4; | |
1233 | } | |
1234 | else if (p->size == 5) | |
1235 | { | |
1236 | args[0] = build_string ("%d.%d.%d.%d:%d"); | |
1237 | nargs = 5; | |
1238 | } | |
e1652a86 KS |
1239 | else if (p->size == 8 || (p->size == 9 && !NILP (omit_port))) |
1240 | { | |
1241 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
1242 | nargs = 8; | |
1243 | } | |
1244 | else if (p->size == 9) | |
1245 | { | |
1246 | args[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d"); | |
1247 | nargs = 9; | |
1248 | } | |
0dccee41 | 1249 | else |
991234f0 KS |
1250 | return Qnil; |
1251 | ||
0dccee41 KS |
1252 | for (i = 0; i < nargs; i++) |
1253 | args[i+1] = p->contents[i]; | |
1254 | return Fformat (nargs+1, args); | |
991234f0 KS |
1255 | } |
1256 | ||
1257 | if (CONSP (address)) | |
1258 | { | |
1259 | Lisp_Object args[2]; | |
1260 | args[0] = build_string ("<Family %d>"); | |
8d2ff840 | 1261 | args[1] = Fcar (address); |
991234f0 | 1262 | return Fformat (2, args); |
177c0ea7 | 1263 | |
991234f0 KS |
1264 | } |
1265 | ||
1266 | return Qnil; | |
1267 | } | |
1268 | #endif | |
d0d6b7c5 | 1269 | \f |
ff6daed3 | 1270 | static Lisp_Object |
e690ca94 KS |
1271 | list_processes_1 (query_only) |
1272 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1273 | { |
1274 | register Lisp_Object tail, tem; | |
1275 | Lisp_Object proc, minspace, tem1; | |
d0d6b7c5 | 1276 | register struct Lisp_Process *p; |
e690ca94 KS |
1277 | char tembuf[300]; |
1278 | int w_proc, w_buffer, w_tty; | |
1279 | Lisp_Object i_status, i_buffer, i_tty, i_command; | |
1280 | ||
1281 | w_proc = 4; /* Proc */ | |
1282 | w_buffer = 6; /* Buffer */ | |
1283 | w_tty = 0; /* Omit if no ttys */ | |
1284 | ||
1285 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1286 | { | |
1287 | int i; | |
1288 | ||
1289 | proc = Fcdr (Fcar (tail)); | |
1290 | p = XPROCESS (proc); | |
1291 | if (NILP (p->childp)) | |
1292 | continue; | |
1293 | if (!NILP (query_only) && !NILP (p->kill_without_query)) | |
1294 | continue; | |
1295 | if (STRINGP (p->name) | |
d5db4077 | 1296 | && ( i = SCHARS (p->name), (i > w_proc))) |
e690ca94 KS |
1297 | w_proc = i; |
1298 | if (!NILP (p->buffer)) | |
1299 | { | |
1300 | if (NILP (XBUFFER (p->buffer)->name) && w_buffer < 8) | |
1301 | w_buffer = 8; /* (Killed) */ | |
d5db4077 | 1302 | else if ((i = SCHARS (XBUFFER (p->buffer)->name), (i > w_buffer))) |
e690ca94 KS |
1303 | w_buffer = i; |
1304 | } | |
1305 | if (STRINGP (p->tty_name) | |
d5db4077 | 1306 | && (i = SCHARS (p->tty_name), (i > w_tty))) |
e690ca94 KS |
1307 | w_tty = i; |
1308 | } | |
1309 | ||
1310 | XSETFASTINT (i_status, w_proc + 1); | |
1311 | XSETFASTINT (i_buffer, XFASTINT (i_status) + 9); | |
1312 | if (w_tty) | |
1313 | { | |
1314 | XSETFASTINT (i_tty, XFASTINT (i_buffer) + w_buffer + 1); | |
1315 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_tty + 1); | |
1316 | } else { | |
1317 | i_tty = Qnil; | |
1318 | XSETFASTINT (i_command, XFASTINT (i_buffer) + w_buffer + 1); | |
1319 | } | |
d0d6b7c5 | 1320 | |
22719df2 | 1321 | XSETFASTINT (minspace, 1); |
d0d6b7c5 JB |
1322 | |
1323 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
ec2258fa | 1324 | current_buffer->undo_list = Qt; |
d0d6b7c5 JB |
1325 | |
1326 | current_buffer->truncate_lines = Qt; | |
1327 | ||
e690ca94 KS |
1328 | write_string ("Proc", -1); |
1329 | Findent_to (i_status, minspace); write_string ("Status", -1); | |
1330 | Findent_to (i_buffer, minspace); write_string ("Buffer", -1); | |
1331 | if (!NILP (i_tty)) | |
1332 | { | |
1333 | Findent_to (i_tty, minspace); write_string ("Tty", -1); | |
1334 | } | |
1335 | Findent_to (i_command, minspace); write_string ("Command", -1); | |
1336 | write_string ("\n", -1); | |
1337 | ||
1338 | write_string ("----", -1); | |
1339 | Findent_to (i_status, minspace); write_string ("------", -1); | |
1340 | Findent_to (i_buffer, minspace); write_string ("------", -1); | |
1341 | if (!NILP (i_tty)) | |
1342 | { | |
1343 | Findent_to (i_tty, minspace); write_string ("---", -1); | |
1344 | } | |
1345 | Findent_to (i_command, minspace); write_string ("-------", -1); | |
1346 | write_string ("\n", -1); | |
d0d6b7c5 JB |
1347 | |
1348 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
1349 | { | |
1350 | Lisp_Object symbol; | |
1351 | ||
1352 | proc = Fcdr (Fcar (tail)); | |
1353 | p = XPROCESS (proc); | |
1354 | if (NILP (p->childp)) | |
1355 | continue; | |
e690ca94 KS |
1356 | if (!NILP (query_only) && !NILP (p->kill_without_query)) |
1357 | continue; | |
d0d6b7c5 JB |
1358 | |
1359 | Finsert (1, &p->name); | |
e690ca94 | 1360 | Findent_to (i_status, minspace); |
d0d6b7c5 JB |
1361 | |
1362 | if (!NILP (p->raw_status_low)) | |
1363 | update_status (p); | |
1364 | symbol = p->status; | |
bcd69aea | 1365 | if (CONSP (p->status)) |
70949dac | 1366 | symbol = XCAR (p->status); |
d0d6b7c5 | 1367 | |
177c0ea7 | 1368 | |
d0d6b7c5 JB |
1369 | if (EQ (symbol, Qsignal)) |
1370 | { | |
1371 | Lisp_Object tem; | |
1372 | tem = Fcar (Fcdr (p->status)); | |
1373 | #ifdef VMS | |
1374 | if (XINT (tem) < NSIG) | |
b0310da4 | 1375 | write_string (sys_errlist [XINT (tem)], -1); |
d0d6b7c5 JB |
1376 | else |
1377 | #endif | |
1378 | Fprinc (symbol, Qnil); | |
1379 | } | |
e690ca94 | 1380 | else if (NETCONN1_P (p)) |
d0d6b7c5 | 1381 | { |
e690ca94 | 1382 | if (EQ (symbol, Qexit)) |
d0d6b7c5 | 1383 | write_string ("closed", -1); |
e690ca94 KS |
1384 | else if (EQ (p->command, Qt)) |
1385 | write_string ("stopped", -1); | |
1386 | else if (EQ (symbol, Qrun)) | |
1387 | write_string ("open", -1); | |
d0d6b7c5 JB |
1388 | else |
1389 | Fprinc (symbol, Qnil); | |
1390 | } | |
1391 | else | |
1392 | Fprinc (symbol, Qnil); | |
1393 | ||
1394 | if (EQ (symbol, Qexit)) | |
1395 | { | |
1396 | Lisp_Object tem; | |
1397 | tem = Fcar (Fcdr (p->status)); | |
1398 | if (XFASTINT (tem)) | |
1399 | { | |
3162bafa | 1400 | sprintf (tembuf, " %d", (int) XFASTINT (tem)); |
d0d6b7c5 JB |
1401 | write_string (tembuf, -1); |
1402 | } | |
1403 | } | |
1404 | ||
1405 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit)) | |
1406 | remove_process (proc); | |
1407 | ||
e690ca94 | 1408 | Findent_to (i_buffer, minspace); |
d0d6b7c5 JB |
1409 | if (NILP (p->buffer)) |
1410 | insert_string ("(none)"); | |
1411 | else if (NILP (XBUFFER (p->buffer)->name)) | |
1412 | insert_string ("(Killed)"); | |
1413 | else | |
1414 | Finsert (1, &XBUFFER (p->buffer)->name); | |
1415 | ||
e690ca94 KS |
1416 | if (!NILP (i_tty)) |
1417 | { | |
1418 | Findent_to (i_tty, minspace); | |
1419 | if (STRINGP (p->tty_name)) | |
1420 | Finsert (1, &p->tty_name); | |
1421 | } | |
a9fde32e | 1422 | |
e690ca94 | 1423 | Findent_to (i_command, minspace); |
a9fde32e | 1424 | |
e690ca94 KS |
1425 | if (EQ (p->status, Qlisten)) |
1426 | { | |
1427 | Lisp_Object port = Fplist_get (p->childp, QCservice); | |
1428 | if (INTEGERP (port)) | |
1429 | port = Fnumber_to_string (port); | |
991234f0 | 1430 | if (NILP (port)) |
0dccee41 | 1431 | port = Fformat_network_address (Fplist_get (p->childp, QClocal), Qnil); |
e690ca94 | 1432 | sprintf (tembuf, "(network %s server on %s)\n", |
bed9664a | 1433 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1434 | (STRINGP (port) ? (char *)SDATA (port) : "?")); |
e690ca94 KS |
1435 | insert_string (tembuf); |
1436 | } | |
1437 | else if (NETCONN1_P (p)) | |
d0d6b7c5 | 1438 | { |
e690ca94 KS |
1439 | /* For a local socket, there is no host name, |
1440 | so display service instead. */ | |
1441 | Lisp_Object host = Fplist_get (p->childp, QChost); | |
1442 | if (!STRINGP (host)) | |
1443 | { | |
1444 | host = Fplist_get (p->childp, QCservice); | |
1445 | if (INTEGERP (host)) | |
1446 | host = Fnumber_to_string (host); | |
1447 | } | |
991234f0 | 1448 | if (NILP (host)) |
0dccee41 | 1449 | host = Fformat_network_address (Fplist_get (p->childp, QCremote), Qnil); |
e690ca94 | 1450 | sprintf (tembuf, "(network %s connection to %s)\n", |
bed9664a | 1451 | (DATAGRAM_CHAN_P (XINT (p->infd)) ? "datagram" : "stream"), |
991234f0 | 1452 | (STRINGP (host) ? (char *)SDATA (host) : "?")); |
d0d6b7c5 JB |
1453 | insert_string (tembuf); |
1454 | } | |
177c0ea7 | 1455 | else |
d0d6b7c5 JB |
1456 | { |
1457 | tem = p->command; | |
1458 | while (1) | |
1459 | { | |
1460 | tem1 = Fcar (tem); | |
1461 | Finsert (1, &tem1); | |
1462 | tem = Fcdr (tem); | |
1463 | if (NILP (tem)) | |
1464 | break; | |
1465 | insert_string (" "); | |
1466 | } | |
1467 | insert_string ("\n"); | |
1468 | } | |
1469 | } | |
1470 | return Qnil; | |
1471 | } | |
1472 | ||
e690ca94 | 1473 | DEFUN ("list-processes", Flist_processes, Slist_processes, 0, 1, "P", |
fdb82f93 | 1474 | doc: /* Display a list of all processes. |
e690ca94 KS |
1475 | If optional argument QUERY-ONLY is non-nil, only processes with |
1476 | the query-on-exit flag set will be listed. | |
fdb82f93 PJ |
1477 | Any process listed as exited or signaled is actually eliminated |
1478 | after the listing is made. */) | |
e690ca94 KS |
1479 | (query_only) |
1480 | Lisp_Object query_only; | |
d0d6b7c5 JB |
1481 | { |
1482 | internal_with_output_to_temp_buffer ("*Process List*", | |
e690ca94 | 1483 | list_processes_1, query_only); |
d0d6b7c5 JB |
1484 | return Qnil; |
1485 | } | |
1486 | ||
1487 | DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0, | |
fdb82f93 PJ |
1488 | doc: /* Return a list of all processes. */) |
1489 | () | |
d0d6b7c5 JB |
1490 | { |
1491 | return Fmapcar (Qcdr, Vprocess_alist); | |
1492 | } | |
1493 | \f | |
b0310da4 JB |
1494 | /* Starting asynchronous inferior processes. */ |
1495 | ||
1496 | static Lisp_Object start_process_unwind (); | |
1497 | ||
d0d6b7c5 | 1498 | DEFUN ("start-process", Fstart_process, Sstart_process, 3, MANY, 0, |
fdb82f93 PJ |
1499 | doc: /* Start a program in a subprocess. Return the process object for it. |
1500 | NAME is name for process. It is modified if necessary to make it unique. | |
553acde5 | 1501 | BUFFER is the buffer (or buffer name) to associate with the process. |
fdb82f93 PJ |
1502 | Process output goes at end of that buffer, unless you specify |
1503 | an output stream or filter function to handle the output. | |
1504 | BUFFER may be also nil, meaning that this process is not associated | |
1505 | with any buffer. | |
553acde5 | 1506 | PROGRAM is the program file name. It is searched for in PATH. |
3ecdf100 | 1507 | Remaining arguments are strings to give program as arguments. |
320aebc9 | 1508 | |
3ecdf100 | 1509 | usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */) |
fdb82f93 | 1510 | (nargs, args) |
d0d6b7c5 JB |
1511 | int nargs; |
1512 | register Lisp_Object *args; | |
1513 | { | |
1e30af70 | 1514 | Lisp_Object buffer, name, program, proc, current_dir, tem; |
d0d6b7c5 JB |
1515 | #ifdef VMS |
1516 | register unsigned char *new_argv; | |
1517 | int len; | |
1518 | #else | |
1519 | register unsigned char **new_argv; | |
1520 | #endif | |
1521 | register int i; | |
aed13378 | 1522 | int count = SPECPDL_INDEX (); |
d0d6b7c5 JB |
1523 | |
1524 | buffer = args[1]; | |
1525 | if (!NILP (buffer)) | |
1526 | buffer = Fget_buffer_create (buffer); | |
1527 | ||
1e30af70 JB |
1528 | /* Make sure that the child will be able to chdir to the current |
1529 | buffer's current directory, or its unhandled equivalent. We | |
1530 | can't just have the child check for an error when it does the | |
1531 | chdir, since it's in a vfork. | |
1532 | ||
1533 | We have to GCPRO around this because Fexpand_file_name and | |
1534 | Funhandled_file_name_directory might call a file name handling | |
1535 | function. The argument list is protected by the caller, so all | |
1536 | we really have to worry about is buffer. */ | |
1537 | { | |
1538 | struct gcpro gcpro1, gcpro2; | |
1539 | ||
1540 | current_dir = current_buffer->directory; | |
1541 | ||
1542 | GCPRO2 (buffer, current_dir); | |
1543 | ||
177c0ea7 | 1544 | current_dir |
7af71e17 RS |
1545 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), |
1546 | Qnil); | |
1e30af70 JB |
1547 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
1548 | report_file_error ("Setting current directory", | |
1549 | Fcons (current_buffer->directory, Qnil)); | |
1550 | ||
1551 | UNGCPRO; | |
1552 | } | |
1553 | ||
d0d6b7c5 | 1554 | name = args[0]; |
b7826503 | 1555 | CHECK_STRING (name); |
d0d6b7c5 JB |
1556 | |
1557 | program = args[2]; | |
1558 | ||
b7826503 | 1559 | CHECK_STRING (program); |
d0d6b7c5 | 1560 | |
d0d6b7c5 | 1561 | proc = make_process (name); |
b0310da4 JB |
1562 | /* If an error occurs and we can't start the process, we want to |
1563 | remove it from the process list. This means that each error | |
1564 | check in create_process doesn't need to call remove_process | |
1565 | itself; it's all taken care of here. */ | |
1566 | record_unwind_protect (start_process_unwind, proc); | |
d0d6b7c5 JB |
1567 | |
1568 | XPROCESS (proc)->childp = Qt; | |
faa7db08 | 1569 | XPROCESS (proc)->plist = Qnil; |
d0d6b7c5 JB |
1570 | XPROCESS (proc)->buffer = buffer; |
1571 | XPROCESS (proc)->sentinel = Qnil; | |
1572 | XPROCESS (proc)->filter = Qnil; | |
03f04413 KH |
1573 | XPROCESS (proc)->filter_multibyte |
1574 | = buffer_defaults.enable_multibyte_characters; | |
d0d6b7c5 JB |
1575 | XPROCESS (proc)->command = Flist (nargs - 2, args + 2); |
1576 | ||
2d942bfa KS |
1577 | #ifdef ADAPTIVE_READ_BUFFERING |
1578 | XPROCESS (proc)->adaptive_read_buffering = Vprocess_adaptive_read_buffering; | |
1579 | #endif | |
1580 | ||
7af71e17 RS |
1581 | /* Make the process marker point into the process buffer (if any). */ |
1582 | if (!NILP (buffer)) | |
d8a2934e RS |
1583 | set_marker_both (XPROCESS (proc)->mark, buffer, |
1584 | BUF_ZV (XBUFFER (buffer)), | |
1585 | BUF_ZV_BYTE (XBUFFER (buffer))); | |
7af71e17 | 1586 | |
67918941 | 1587 | { |
d5d4ae71 KH |
1588 | /* Decide coding systems for communicating with the process. Here |
1589 | we don't setup the structure coding_system nor pay attention to | |
1590 | unibyte mode. They are done in create_process. */ | |
1591 | ||
67918941 RS |
1592 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
1593 | Lisp_Object coding_systems = Qt; | |
1594 | Lisp_Object val, *args2; | |
a4a37e65 | 1595 | struct gcpro gcpro1, gcpro2; |
67918941 | 1596 | |
d5d4ae71 KH |
1597 | val = Vcoding_system_for_read; |
1598 | if (NILP (val)) | |
67918941 RS |
1599 | { |
1600 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
1601 | args2[0] = Qstart_process; | |
1602 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1603 | GCPRO2 (proc, current_dir); |
67918941 RS |
1604 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1605 | UNGCPRO; | |
1606 | if (CONSP (coding_systems)) | |
70949dac | 1607 | val = XCAR (coding_systems); |
67918941 | 1608 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1609 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
1610 | } |
1611 | XPROCESS (proc)->decode_coding_system = val; | |
1612 | ||
d5d4ae71 KH |
1613 | val = Vcoding_system_for_write; |
1614 | if (NILP (val)) | |
67918941 RS |
1615 | { |
1616 | if (EQ (coding_systems, Qt)) | |
1617 | { | |
1618 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof args2); | |
1619 | args2[0] = Qstart_process; | |
1620 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
a4a37e65 | 1621 | GCPRO2 (proc, current_dir); |
67918941 RS |
1622 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
1623 | UNGCPRO; | |
1624 | } | |
1625 | if (CONSP (coding_systems)) | |
70949dac | 1626 | val = XCDR (coding_systems); |
67918941 | 1627 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1628 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
1629 | } |
1630 | XPROCESS (proc)->encode_coding_system = val; | |
1631 | } | |
0fa1789e | 1632 | |
a4a37e65 KH |
1633 | #ifdef VMS |
1634 | /* Make a one member argv with all args concatenated | |
1635 | together separated by a blank. */ | |
d5db4077 | 1636 | len = SBYTES (program) + 2; |
a4a37e65 KH |
1637 | for (i = 3; i < nargs; i++) |
1638 | { | |
1639 | tem = args[i]; | |
b7826503 | 1640 | CHECK_STRING (tem); |
d5db4077 | 1641 | len += SBYTES (tem) + 1; /* count the blank */ |
a4a37e65 KH |
1642 | } |
1643 | new_argv = (unsigned char *) alloca (len); | |
d5db4077 | 1644 | strcpy (new_argv, SDATA (program)); |
a4a37e65 KH |
1645 | for (i = 3; i < nargs; i++) |
1646 | { | |
1647 | tem = args[i]; | |
b7826503 | 1648 | CHECK_STRING (tem); |
a4a37e65 | 1649 | strcat (new_argv, " "); |
d5db4077 | 1650 | strcat (new_argv, SDATA (tem)); |
a4a37e65 KH |
1651 | } |
1652 | /* Need to add code here to check for program existence on VMS */ | |
177c0ea7 | 1653 | |
a4a37e65 KH |
1654 | #else /* not VMS */ |
1655 | new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *)); | |
1656 | ||
ed30cf85 RS |
1657 | /* If program file name is not absolute, search our path for it. |
1658 | Put the name we will really use in TEM. */ | |
d5db4077 KR |
1659 | if (!IS_DIRECTORY_SEP (SREF (program, 0)) |
1660 | && !(SCHARS (program) > 1 | |
1661 | && IS_DEVICE_SEP (SREF (program, 1)))) | |
a4a37e65 KH |
1662 | { |
1663 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1664 | ||
1665 | tem = Qnil; | |
1666 | GCPRO4 (name, program, buffer, current_dir); | |
cc4db0c7 | 1667 | openp (Vexec_path, program, Vexec_suffixes, &tem, make_number (X_OK)); |
a4a37e65 KH |
1668 | UNGCPRO; |
1669 | if (NILP (tem)) | |
1670 | report_file_error ("Searching for program", Fcons (program, Qnil)); | |
1671 | tem = Fexpand_file_name (tem, Qnil); | |
a4a37e65 KH |
1672 | } |
1673 | else | |
1674 | { | |
1675 | if (!NILP (Ffile_directory_p (program))) | |
1676 | error ("Specified program for new process is a directory"); | |
ed30cf85 | 1677 | tem = program; |
a4a37e65 KH |
1678 | } |
1679 | ||
ed30cf85 RS |
1680 | /* If program file name starts with /: for quoting a magic name, |
1681 | discard that. */ | |
1682 | if (SBYTES (tem) > 2 && SREF (tem, 0) == '/' | |
1683 | && SREF (tem, 1) == ':') | |
1684 | tem = Fsubstring (tem, make_number (2), Qnil); | |
1685 | ||
1686 | /* Encode the file name and put it in NEW_ARGV. | |
1687 | That's where the child will use it to execute the program. */ | |
1688 | tem = ENCODE_FILE (tem); | |
1689 | new_argv[0] = SDATA (tem); | |
1690 | ||
a4a37e65 KH |
1691 | /* Here we encode arguments by the coding system used for sending |
1692 | data to the process. We don't support using different coding | |
1693 | systems for encoding arguments and for encoding data sent to the | |
1694 | process. */ | |
1695 | ||
1696 | for (i = 3; i < nargs; i++) | |
1697 | { | |
1698 | tem = args[i]; | |
b7826503 | 1699 | CHECK_STRING (tem); |
a4a37e65 KH |
1700 | if (STRING_MULTIBYTE (tem)) |
1701 | tem = (code_convert_string_norecord | |
1702 | (tem, XPROCESS (proc)->encode_coding_system, 1)); | |
d5db4077 | 1703 | new_argv[i - 2] = SDATA (tem); |
a4a37e65 KH |
1704 | } |
1705 | new_argv[i - 2] = 0; | |
1706 | #endif /* not VMS */ | |
1707 | ||
0fa1789e | 1708 | XPROCESS (proc)->decoding_buf = make_uninit_string (0); |
e7fbaa65 | 1709 | XPROCESS (proc)->decoding_carryover = make_number (0); |
0fa1789e | 1710 | XPROCESS (proc)->encoding_buf = make_uninit_string (0); |
e7fbaa65 | 1711 | XPROCESS (proc)->encoding_carryover = make_number (0); |
0fa1789e | 1712 | |
52a1b894 | 1713 | XPROCESS (proc)->inherit_coding_system_flag |
aa91317a RS |
1714 | = (NILP (buffer) || !inherit_process_coding_system |
1715 | ? Qnil : Qt); | |
52a1b894 | 1716 | |
6b53bb85 | 1717 | create_process (proc, (char **) new_argv, current_dir); |
d0d6b7c5 | 1718 | |
b0310da4 | 1719 | return unbind_to (count, proc); |
d0d6b7c5 JB |
1720 | } |
1721 | ||
b0310da4 | 1722 | /* This function is the unwind_protect form for Fstart_process. If |
8e6208c5 | 1723 | PROC doesn't have its pid set, then we know someone has signaled |
b0310da4 JB |
1724 | an error and the process wasn't started successfully, so we should |
1725 | remove it from the process list. */ | |
1726 | static Lisp_Object | |
1727 | start_process_unwind (proc) | |
1728 | Lisp_Object proc; | |
1729 | { | |
bcd69aea | 1730 | if (!PROCESSP (proc)) |
b0310da4 JB |
1731 | abort (); |
1732 | ||
1733 | /* Was PROC started successfully? */ | |
188d6c4e | 1734 | if (XINT (XPROCESS (proc)->pid) <= 0) |
b0310da4 JB |
1735 | remove_process (proc); |
1736 | ||
1737 | return Qnil; | |
1738 | } | |
1739 | ||
ff6daed3 | 1740 | static void |
30904ab7 GM |
1741 | create_process_1 (timer) |
1742 | struct atimer *timer; | |
d0d6b7c5 | 1743 | { |
30904ab7 | 1744 | /* Nothing to do. */ |
d0d6b7c5 JB |
1745 | } |
1746 | ||
30904ab7 | 1747 | |
d0d6b7c5 JB |
1748 | #if 0 /* This doesn't work; see the note before sigchld_handler. */ |
1749 | #ifdef USG | |
1750 | #ifdef SIGCHLD | |
1751 | /* Mimic blocking of signals on system V, which doesn't really have it. */ | |
1752 | ||
1753 | /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */ | |
1754 | int sigchld_deferred; | |
1755 | ||
1756 | SIGTYPE | |
1757 | create_process_sigchld () | |
1758 | { | |
1759 | signal (SIGCHLD, create_process_sigchld); | |
1760 | ||
1761 | sigchld_deferred = 1; | |
1762 | } | |
1763 | #endif | |
1764 | #endif | |
1765 | #endif | |
1766 | ||
1767 | #ifndef VMS /* VMS version of this function is in vmsproc.c. */ | |
6b53bb85 | 1768 | void |
1e30af70 | 1769 | create_process (process, new_argv, current_dir) |
d0d6b7c5 JB |
1770 | Lisp_Object process; |
1771 | char **new_argv; | |
1e30af70 | 1772 | Lisp_Object current_dir; |
d0d6b7c5 | 1773 | { |
ecd1f654 | 1774 | int pid, inchannel, outchannel; |
d0d6b7c5 | 1775 | int sv[2]; |
0dc70c33 KH |
1776 | #ifdef POSIX_SIGNALS |
1777 | sigset_t procmask; | |
1778 | sigset_t blocked; | |
1779 | struct sigaction sigint_action; | |
1780 | struct sigaction sigquit_action; | |
1781 | #ifdef AIX | |
1782 | struct sigaction sighup_action; | |
1783 | #endif | |
1784 | #else /* !POSIX_SIGNALS */ | |
41d03b9a | 1785 | #if 0 |
d0d6b7c5 JB |
1786 | #ifdef SIGCHLD |
1787 | SIGTYPE (*sigchld)(); | |
1788 | #endif | |
41d03b9a | 1789 | #endif /* 0 */ |
0dc70c33 | 1790 | #endif /* !POSIX_SIGNALS */ |
ecd1f654 KH |
1791 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
1792 | volatile int forkin, forkout; | |
1793 | volatile int pty_flag = 0; | |
3ec68006 | 1794 | #ifndef USE_CRT_DLL |
d0d6b7c5 | 1795 | extern char **environ; |
3ec68006 | 1796 | #endif |
d0d6b7c5 | 1797 | |
d0d6b7c5 JB |
1798 | inchannel = outchannel = -1; |
1799 | ||
1800 | #ifdef HAVE_PTYS | |
fe45da4e | 1801 | if (!NILP (Vprocess_connection_type)) |
d0d6b7c5 JB |
1802 | outchannel = inchannel = allocate_pty (); |
1803 | ||
d0d6b7c5 JB |
1804 | if (inchannel >= 0) |
1805 | { | |
2af70a0c RS |
1806 | #if ! defined (USG) || defined (USG_SUBTTY_WORKS) |
1807 | /* On most USG systems it does not work to open the pty's tty here, | |
1808 | then close it and reopen it in the child. */ | |
d0d6b7c5 JB |
1809 | #ifdef O_NOCTTY |
1810 | /* Don't let this terminal become our controlling terminal | |
1811 | (in case we don't have one). */ | |
68c45bf0 | 1812 | forkout = forkin = emacs_open (pty_name, O_RDWR | O_NOCTTY, 0); |
d0d6b7c5 | 1813 | #else |
68c45bf0 | 1814 | forkout = forkin = emacs_open (pty_name, O_RDWR, 0); |
d0d6b7c5 JB |
1815 | #endif |
1816 | if (forkin < 0) | |
1817 | report_file_error ("Opening pty", Qnil); | |
21375f1e YM |
1818 | #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY) |
1819 | /* In the case that vfork is defined as fork, the parent process | |
1820 | (Emacs) may send some data before the child process completes | |
1821 | tty options setup. So we setup tty before forking. */ | |
1822 | child_setup_tty (forkout); | |
1823 | #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */ | |
d0d6b7c5 JB |
1824 | #else |
1825 | forkin = forkout = -1; | |
2af70a0c | 1826 | #endif /* not USG, or USG_SUBTTY_WORKS */ |
d0d6b7c5 JB |
1827 | pty_flag = 1; |
1828 | } | |
1829 | else | |
1830 | #endif /* HAVE_PTYS */ | |
1831 | #ifdef SKTPAIR | |
1832 | { | |
1833 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv) < 0) | |
1834 | report_file_error ("Opening socketpair", Qnil); | |
1835 | outchannel = inchannel = sv[0]; | |
1836 | forkout = forkin = sv[1]; | |
1837 | } | |
1838 | #else /* not SKTPAIR */ | |
1839 | { | |
fc14013c KH |
1840 | int tem; |
1841 | tem = pipe (sv); | |
1842 | if (tem < 0) | |
1843 | report_file_error ("Creating pipe", Qnil); | |
d0d6b7c5 JB |
1844 | inchannel = sv[0]; |
1845 | forkout = sv[1]; | |
fc14013c KH |
1846 | tem = pipe (sv); |
1847 | if (tem < 0) | |
1848 | { | |
68c45bf0 PE |
1849 | emacs_close (inchannel); |
1850 | emacs_close (forkout); | |
fc14013c KH |
1851 | report_file_error ("Creating pipe", Qnil); |
1852 | } | |
d0d6b7c5 JB |
1853 | outchannel = sv[1]; |
1854 | forkin = sv[0]; | |
1855 | } | |
1856 | #endif /* not SKTPAIR */ | |
1857 | ||
1858 | #if 0 | |
1859 | /* Replaced by close_process_descs */ | |
1860 | set_exclusive_use (inchannel); | |
1861 | set_exclusive_use (outchannel); | |
1862 | #endif | |
1863 | ||
1864 | /* Stride people say it's a mystery why this is needed | |
1865 | as well as the O_NDELAY, but that it fails without this. */ | |
1866 | #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) | |
1867 | { | |
1868 | int one = 1; | |
1869 | ioctl (inchannel, FIONBIO, &one); | |
1870 | } | |
1871 | #endif | |
1872 | ||
1873 | #ifdef O_NONBLOCK | |
1874 | fcntl (inchannel, F_SETFL, O_NONBLOCK); | |
03832893 | 1875 | fcntl (outchannel, F_SETFL, O_NONBLOCK); |
d0d6b7c5 JB |
1876 | #else |
1877 | #ifdef O_NDELAY | |
1878 | fcntl (inchannel, F_SETFL, O_NDELAY); | |
03832893 | 1879 | fcntl (outchannel, F_SETFL, O_NDELAY); |
d0d6b7c5 JB |
1880 | #endif |
1881 | #endif | |
1882 | ||
1883 | /* Record this as an active process, with its channels. | |
1884 | As a result, child_setup will close Emacs's side of the pipes. */ | |
1885 | chan_process[inchannel] = process; | |
1d056e64 KH |
1886 | XSETINT (XPROCESS (process)->infd, inchannel); |
1887 | XSETINT (XPROCESS (process)->outfd, outchannel); | |
16782258 JD |
1888 | |
1889 | /* Previously we recorded the tty descriptor used in the subprocess. | |
1890 | It was only used for getting the foreground tty process, so now | |
1891 | we just reopen the device (see emacs_get_tty_pgrp) as this is | |
1892 | more portable (see USG_SUBTTY_WORKS above). */ | |
1893 | ||
d0d6b7c5 JB |
1894 | XPROCESS (process)->pty_flag = (pty_flag ? Qt : Qnil); |
1895 | XPROCESS (process)->status = Qrun; | |
03f04413 | 1896 | setup_process_coding_systems (process); |
d0d6b7c5 JB |
1897 | |
1898 | /* Delay interrupts until we have a chance to store | |
1899 | the new fork's pid in its process structure */ | |
0dc70c33 KH |
1900 | #ifdef POSIX_SIGNALS |
1901 | sigemptyset (&blocked); | |
1902 | #ifdef SIGCHLD | |
1903 | sigaddset (&blocked, SIGCHLD); | |
1904 | #endif | |
351e611f | 1905 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
1906 | /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal', |
1907 | this sets the parent's signal handlers as well as the child's. | |
1908 | So delay all interrupts whose handlers the child might munge, | |
1909 | and record the current handlers so they can be restored later. */ | |
1910 | sigaddset (&blocked, SIGINT ); sigaction (SIGINT , 0, &sigint_action ); | |
1911 | sigaddset (&blocked, SIGQUIT); sigaction (SIGQUIT, 0, &sigquit_action); | |
1912 | #ifdef AIX | |
1913 | sigaddset (&blocked, SIGHUP ); sigaction (SIGHUP , 0, &sighup_action ); | |
1914 | #endif | |
351e611f | 1915 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
1916 | sigprocmask (SIG_BLOCK, &blocked, &procmask); |
1917 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
1918 | #ifdef SIGCHLD |
1919 | #ifdef BSD4_1 | |
1920 | sighold (SIGCHLD); | |
1921 | #else /* not BSD4_1 */ | |
6df54671 | 1922 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
1923 | sigsetmask (sigmask (SIGCHLD)); |
1924 | #else /* ordinary USG */ | |
1925 | #if 0 | |
1926 | sigchld_deferred = 0; | |
1927 | sigchld = signal (SIGCHLD, create_process_sigchld); | |
1928 | #endif | |
1929 | #endif /* ordinary USG */ | |
1930 | #endif /* not BSD4_1 */ | |
1931 | #endif /* SIGCHLD */ | |
0dc70c33 | 1932 | #endif /* !POSIX_SIGNALS */ |
d0d6b7c5 | 1933 | |
3081bf8d | 1934 | FD_SET (inchannel, &input_wait_mask); |
a69281ff | 1935 | FD_SET (inchannel, &non_keyboard_wait_mask); |
3081bf8d KH |
1936 | if (inchannel > max_process_desc) |
1937 | max_process_desc = inchannel; | |
1938 | ||
d0d6b7c5 JB |
1939 | /* Until we store the proper pid, enable sigchld_handler |
1940 | to recognize an unknown pid as standing for this process. | |
1941 | It is very important not to let this `marker' value stay | |
1942 | in the table after this function has returned; if it does | |
1943 | it might cause call-process to hang and subsequent asynchronous | |
1944 | processes to get their return values scrambled. */ | |
1945 | XSETINT (XPROCESS (process)->pid, -1); | |
1946 | ||
ececcbec | 1947 | BLOCK_INPUT; |
177c0ea7 | 1948 | |
d0d6b7c5 JB |
1949 | { |
1950 | /* child_setup must clobber environ on systems with true vfork. | |
1951 | Protect it from permanent change. */ | |
1952 | char **save_environ = environ; | |
1953 | ||
14dc6093 | 1954 | current_dir = ENCODE_FILE (current_dir); |
a932f187 | 1955 | |
e98d950b | 1956 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
1957 | pid = vfork (); |
1958 | if (pid == 0) | |
e98d950b | 1959 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
1960 | { |
1961 | int xforkin = forkin; | |
1962 | int xforkout = forkout; | |
1963 | ||
1964 | #if 0 /* This was probably a mistake--it duplicates code later on, | |
1965 | but fails to handle all the cases. */ | |
1966 | /* Make sure SIGCHLD is not blocked in the child. */ | |
1967 | sigsetmask (SIGEMPTYMASK); | |
1968 | #endif | |
1969 | ||
1970 | /* Make the pty be the controlling terminal of the process. */ | |
1971 | #ifdef HAVE_PTYS | |
1972 | /* First, disconnect its current controlling terminal. */ | |
1973 | #ifdef HAVE_SETSID | |
7ce48618 RS |
1974 | /* We tried doing setsid only if pty_flag, but it caused |
1975 | process_set_signal to fail on SGI when using a pipe. */ | |
1976 | setsid (); | |
ce4c9c90 | 1977 | /* Make the pty's terminal the controlling terminal. */ |
084fd64a | 1978 | if (pty_flag) |
39e9ebcd | 1979 | { |
39e9ebcd RS |
1980 | #ifdef TIOCSCTTY |
1981 | /* We ignore the return value | |
1982 | because faith@cs.unc.edu says that is necessary on Linux. */ | |
1983 | ioctl (xforkin, TIOCSCTTY, 0); | |
ce4c9c90 | 1984 | #endif |
39e9ebcd | 1985 | } |
d0d6b7c5 | 1986 | #else /* not HAVE_SETSID */ |
c14e53a4 | 1987 | #ifdef USG |
000ab717 | 1988 | /* It's very important to call setpgrp here and no time |
d0d6b7c5 JB |
1989 | afterwards. Otherwise, we lose our controlling tty which |
1990 | is set when we open the pty. */ | |
1991 | setpgrp (); | |
1992 | #endif /* USG */ | |
1993 | #endif /* not HAVE_SETSID */ | |
9bcf8ec6 KH |
1994 | #if defined (HAVE_TERMIOS) && defined (LDISC1) |
1995 | if (pty_flag && xforkin >= 0) | |
1996 | { | |
1997 | struct termios t; | |
1998 | tcgetattr (xforkin, &t); | |
1999 | t.c_lflag = LDISC1; | |
2000 | if (tcsetattr (xforkin, TCSANOW, &t) < 0) | |
68c45bf0 | 2001 | emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39); |
9bcf8ec6 KH |
2002 | } |
2003 | #else | |
aafadd9f | 2004 | #if defined (NTTYDISC) && defined (TIOCSETD) |
ff773a4e | 2005 | if (pty_flag && xforkin >= 0) |
afc549fd RS |
2006 | { |
2007 | /* Use new line discipline. */ | |
2008 | int ldisc = NTTYDISC; | |
4458f555 | 2009 | ioctl (xforkin, TIOCSETD, &ldisc); |
afc549fd | 2010 | } |
000ab717 | 2011 | #endif |
9bcf8ec6 | 2012 | #endif |
177c0ea7 | 2013 | #ifdef TIOCNOTTY |
d0d6b7c5 JB |
2014 | /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you |
2015 | can do TIOCSPGRP only to the process's controlling tty. */ | |
2016 | if (pty_flag) | |
2017 | { | |
177c0ea7 | 2018 | /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here? |
d0d6b7c5 | 2019 | I can't test it since I don't have 4.3. */ |
68c45bf0 | 2020 | int j = emacs_open ("/dev/tty", O_RDWR, 0); |
d0d6b7c5 | 2021 | ioctl (j, TIOCNOTTY, 0); |
68c45bf0 | 2022 | emacs_close (j); |
5a570e37 | 2023 | #ifndef USG |
d0d6b7c5 JB |
2024 | /* In order to get a controlling terminal on some versions |
2025 | of BSD, it is necessary to put the process in pgrp 0 | |
2026 | before it opens the terminal. */ | |
99c1aeca | 2027 | #ifdef HAVE_SETPGID |
3ea1d291 RS |
2028 | setpgid (0, 0); |
2029 | #else | |
d0d6b7c5 | 2030 | setpgrp (0, 0); |
3ea1d291 | 2031 | #endif |
d0d6b7c5 JB |
2032 | #endif |
2033 | } | |
2034 | #endif /* TIOCNOTTY */ | |
2035 | ||
99153b9e | 2036 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
d0d6b7c5 | 2037 | /*** There is a suggestion that this ought to be a |
99153b9e RS |
2038 | conditional on TIOCSPGRP, |
2039 | or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)). | |
2040 | Trying the latter gave the wrong results on Debian GNU/Linux 1.1; | |
2041 | that system does seem to need this code, even though | |
2042 | both HAVE_SETSID and TIOCSCTTY are defined. */ | |
d0d6b7c5 JB |
2043 | /* Now close the pty (if we had it open) and reopen it. |
2044 | This makes the pty the controlling terminal of the subprocess. */ | |
2045 | if (pty_flag) | |
2046 | { | |
99e3d726 RS |
2047 | #ifdef SET_CHILD_PTY_PGRP |
2048 | int pgrp = getpid (); | |
2049 | #endif | |
2050 | ||
68c45bf0 PE |
2051 | /* I wonder if emacs_close (emacs_open (pty_name, ...)) |
2052 | would work? */ | |
d0d6b7c5 | 2053 | if (xforkin >= 0) |
68c45bf0 PE |
2054 | emacs_close (xforkin); |
2055 | xforkout = xforkin = emacs_open (pty_name, O_RDWR, 0); | |
d0d6b7c5 | 2056 | |
4aa54ba8 RS |
2057 | if (xforkin < 0) |
2058 | { | |
68c45bf0 PE |
2059 | emacs_write (1, "Couldn't open the pty terminal ", 31); |
2060 | emacs_write (1, pty_name, strlen (pty_name)); | |
2061 | emacs_write (1, "\n", 1); | |
4aa54ba8 RS |
2062 | _exit (1); |
2063 | } | |
2064 | ||
99e3d726 RS |
2065 | #ifdef SET_CHILD_PTY_PGRP |
2066 | ioctl (xforkin, TIOCSPGRP, &pgrp); | |
2067 | ioctl (xforkout, TIOCSPGRP, &pgrp); | |
2068 | #endif | |
d0d6b7c5 | 2069 | } |
99153b9e | 2070 | #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */ |
e9bf058b | 2071 | |
d0d6b7c5 | 2072 | #ifdef SETUP_SLAVE_PTY |
13a72104 RS |
2073 | if (pty_flag) |
2074 | { | |
2075 | SETUP_SLAVE_PTY; | |
2076 | } | |
d0d6b7c5 JB |
2077 | #endif /* SETUP_SLAVE_PTY */ |
2078 | #ifdef AIX | |
2079 | /* On AIX, we've disabled SIGHUP above once we start a child on a pty. | |
2080 | Now reenable it in the child, so it will die when we want it to. */ | |
2081 | if (pty_flag) | |
2082 | signal (SIGHUP, SIG_DFL); | |
2083 | #endif | |
2084 | #endif /* HAVE_PTYS */ | |
2085 | ||
0dc70c33 KH |
2086 | signal (SIGINT, SIG_DFL); |
2087 | signal (SIGQUIT, SIG_DFL); | |
2088 | ||
2089 | /* Stop blocking signals in the child. */ | |
2090 | #ifdef POSIX_SIGNALS | |
2091 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2092 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2093 | #ifdef SIGCHLD |
2094 | #ifdef BSD4_1 | |
2095 | sigrelse (SIGCHLD); | |
2096 | #else /* not BSD4_1 */ | |
6df54671 | 2097 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2098 | sigsetmask (SIGEMPTYMASK); |
2099 | #else /* ordinary USG */ | |
63528b78 | 2100 | #if 0 |
d0d6b7c5 | 2101 | signal (SIGCHLD, sigchld); |
63528b78 | 2102 | #endif |
d0d6b7c5 JB |
2103 | #endif /* ordinary USG */ |
2104 | #endif /* not BSD4_1 */ | |
2105 | #endif /* SIGCHLD */ | |
0dc70c33 | 2106 | #endif /* !POSIX_SIGNALS */ |
5e7e1da2 | 2107 | |
21375f1e | 2108 | #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY) |
ab01d0a8 RS |
2109 | if (pty_flag) |
2110 | child_setup_tty (xforkout); | |
21375f1e | 2111 | #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */ |
e98d950b RS |
2112 | #ifdef WINDOWSNT |
2113 | pid = child_setup (xforkin, xforkout, xforkout, | |
2114 | new_argv, 1, current_dir); | |
177c0ea7 | 2115 | #else /* not WINDOWSNT */ |
d0d6b7c5 | 2116 | child_setup (xforkin, xforkout, xforkout, |
e065a56e | 2117 | new_argv, 1, current_dir); |
e98d950b | 2118 | #endif /* not WINDOWSNT */ |
d0d6b7c5 JB |
2119 | } |
2120 | environ = save_environ; | |
2121 | } | |
2122 | ||
ececcbec RS |
2123 | UNBLOCK_INPUT; |
2124 | ||
4a127b3b | 2125 | /* This runs in the Emacs process. */ |
d0d6b7c5 | 2126 | if (pid < 0) |
6311cf58 RS |
2127 | { |
2128 | if (forkin >= 0) | |
68c45bf0 | 2129 | emacs_close (forkin); |
6311cf58 | 2130 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2131 | emacs_close (forkout); |
6311cf58 | 2132 | } |
4a127b3b KH |
2133 | else |
2134 | { | |
2135 | /* vfork succeeded. */ | |
2136 | XSETFASTINT (XPROCESS (process)->pid, pid); | |
d0d6b7c5 | 2137 | |
e98d950b | 2138 | #ifdef WINDOWSNT |
4a127b3b | 2139 | register_child (pid, inchannel); |
e98d950b RS |
2140 | #endif /* WINDOWSNT */ |
2141 | ||
4a127b3b KH |
2142 | /* If the subfork execv fails, and it exits, |
2143 | this close hangs. I don't know why. | |
2144 | So have an interrupt jar it loose. */ | |
30904ab7 GM |
2145 | { |
2146 | struct atimer *timer; | |
2147 | EMACS_TIME offset; | |
177c0ea7 | 2148 | |
30904ab7 GM |
2149 | stop_polling (); |
2150 | EMACS_SET_SECS_USECS (offset, 1, 0); | |
2151 | timer = start_atimer (ATIMER_RELATIVE, offset, create_process_1, 0); | |
177c0ea7 | 2152 | |
30904ab7 GM |
2153 | if (forkin >= 0) |
2154 | emacs_close (forkin); | |
2155 | ||
2156 | cancel_atimer (timer); | |
2157 | start_polling (); | |
2158 | } | |
177c0ea7 | 2159 | |
4a127b3b | 2160 | if (forkin != forkout && forkout >= 0) |
68c45bf0 | 2161 | emacs_close (forkout); |
d0d6b7c5 | 2162 | |
875e6b94 | 2163 | #ifdef HAVE_PTYS |
4a127b3b KH |
2164 | if (pty_flag) |
2165 | XPROCESS (process)->tty_name = build_string (pty_name); | |
2166 | else | |
875e6b94 | 2167 | #endif |
4a127b3b KH |
2168 | XPROCESS (process)->tty_name = Qnil; |
2169 | } | |
3b9a3dfa | 2170 | |
4a127b3b KH |
2171 | /* Restore the signal state whether vfork succeeded or not. |
2172 | (We will signal an error, below, if it failed.) */ | |
0dc70c33 | 2173 | #ifdef POSIX_SIGNALS |
351e611f | 2174 | #ifdef HAVE_WORKING_VFORK |
0dc70c33 KH |
2175 | /* Restore the parent's signal handlers. */ |
2176 | sigaction (SIGINT, &sigint_action, 0); | |
2177 | sigaction (SIGQUIT, &sigquit_action, 0); | |
2178 | #ifdef AIX | |
2179 | sigaction (SIGHUP, &sighup_action, 0); | |
2180 | #endif | |
351e611f | 2181 | #endif /* HAVE_WORKING_VFORK */ |
0dc70c33 KH |
2182 | /* Stop blocking signals in the parent. */ |
2183 | sigprocmask (SIG_SETMASK, &procmask, 0); | |
2184 | #else /* !POSIX_SIGNALS */ | |
d0d6b7c5 JB |
2185 | #ifdef SIGCHLD |
2186 | #ifdef BSD4_1 | |
2187 | sigrelse (SIGCHLD); | |
2188 | #else /* not BSD4_1 */ | |
6df54671 | 2189 | #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX) |
d0d6b7c5 JB |
2190 | sigsetmask (SIGEMPTYMASK); |
2191 | #else /* ordinary USG */ | |
2192 | #if 0 | |
2193 | signal (SIGCHLD, sigchld); | |
2194 | /* Now really handle any of these signals | |
2195 | that came in during this function. */ | |
2196 | if (sigchld_deferred) | |
2197 | kill (getpid (), SIGCHLD); | |
2198 | #endif | |
2199 | #endif /* ordinary USG */ | |
2200 | #endif /* not BSD4_1 */ | |
2201 | #endif /* SIGCHLD */ | |
0dc70c33 | 2202 | #endif /* !POSIX_SIGNALS */ |
4a127b3b KH |
2203 | |
2204 | /* Now generate the error if vfork failed. */ | |
2205 | if (pid < 0) | |
2206 | report_file_error ("Doing vfork", Qnil); | |
d0d6b7c5 JB |
2207 | } |
2208 | #endif /* not VMS */ | |
2209 | ||
e690ca94 | 2210 | \f |
d0d6b7c5 JB |
2211 | #ifdef HAVE_SOCKETS |
2212 | ||
e690ca94 KS |
2213 | /* Convert an internal struct sockaddr to a lisp object (vector or string). |
2214 | The address family of sa is not included in the result. */ | |
2215 | ||
2216 | static Lisp_Object | |
2217 | conv_sockaddr_to_lisp (sa, len) | |
2218 | struct sockaddr *sa; | |
2219 | int len; | |
2220 | { | |
2221 | Lisp_Object address; | |
2222 | int i; | |
2223 | unsigned char *cp; | |
2224 | register struct Lisp_Vector *p; | |
2225 | ||
2226 | switch (sa->sa_family) | |
2227 | { | |
2228 | case AF_INET: | |
2229 | { | |
2230 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2231 | len = sizeof (sin->sin_addr) + 1; | |
2232 | address = Fmake_vector (make_number (len), Qnil); | |
2233 | p = XVECTOR (address); | |
2234 | p->contents[--len] = make_number (ntohs (sin->sin_port)); | |
2235 | cp = (unsigned char *)&sin->sin_addr; | |
2236 | break; | |
2237 | } | |
e1652a86 KS |
2238 | #ifdef AF_INET6 |
2239 | case AF_INET6: | |
2240 | { | |
2241 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2242 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2243 | len = sizeof (sin6->sin6_addr)/2 + 1; | |
2244 | address = Fmake_vector (make_number (len), Qnil); | |
2245 | p = XVECTOR (address); | |
2246 | p->contents[--len] = make_number (ntohs (sin6->sin6_port)); | |
2247 | for (i = 0; i < len; i++) | |
2248 | p->contents[i] = make_number (ntohs (ip6[i])); | |
2249 | return address; | |
2250 | } | |
2251 | #endif | |
e690ca94 KS |
2252 | #ifdef HAVE_LOCAL_SOCKETS |
2253 | case AF_LOCAL: | |
2254 | { | |
fb23673a EZ |
2255 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
2256 | for (i = 0; i < sizeof (sockun->sun_path); i++) | |
2257 | if (sockun->sun_path[i] == 0) | |
e690ca94 | 2258 | break; |
fb23673a | 2259 | return make_unibyte_string (sockun->sun_path, i); |
e690ca94 KS |
2260 | } |
2261 | #endif | |
2262 | default: | |
2263 | len -= sizeof (sa->sa_family); | |
2264 | address = Fcons (make_number (sa->sa_family), | |
2265 | Fmake_vector (make_number (len), Qnil)); | |
2266 | p = XVECTOR (XCDR (address)); | |
2267 | cp = (unsigned char *) sa + sizeof (sa->sa_family); | |
2268 | break; | |
2269 | } | |
2270 | ||
2271 | i = 0; | |
2272 | while (i < len) | |
2273 | p->contents[i++] = make_number (*cp++); | |
2274 | ||
2275 | return address; | |
2276 | } | |
2277 | ||
2278 | ||
2279 | /* Get family and required size for sockaddr structure to hold ADDRESS. */ | |
2280 | ||
2281 | static int | |
2282 | get_lisp_to_sockaddr_size (address, familyp) | |
2283 | Lisp_Object address; | |
2284 | int *familyp; | |
2285 | { | |
2286 | register struct Lisp_Vector *p; | |
2287 | ||
2288 | if (VECTORP (address)) | |
2289 | { | |
2290 | p = XVECTOR (address); | |
2291 | if (p->size == 5) | |
2292 | { | |
2293 | *familyp = AF_INET; | |
2294 | return sizeof (struct sockaddr_in); | |
2295 | } | |
e1652a86 KS |
2296 | #ifdef AF_INET6 |
2297 | else if (p->size == 9) | |
2298 | { | |
2299 | *familyp = AF_INET6; | |
2300 | return sizeof (struct sockaddr_in6); | |
2301 | } | |
2302 | #endif | |
e690ca94 KS |
2303 | } |
2304 | #ifdef HAVE_LOCAL_SOCKETS | |
2305 | else if (STRINGP (address)) | |
2306 | { | |
2307 | *familyp = AF_LOCAL; | |
2308 | return sizeof (struct sockaddr_un); | |
2309 | } | |
2310 | #endif | |
2311 | else if (CONSP (address) && INTEGERP (XCAR (address)) && VECTORP (XCDR (address))) | |
2312 | { | |
2313 | struct sockaddr *sa; | |
2314 | *familyp = XINT (XCAR (address)); | |
2315 | p = XVECTOR (XCDR (address)); | |
2316 | return p->size + sizeof (sa->sa_family); | |
2317 | } | |
2318 | return 0; | |
2319 | } | |
2320 | ||
2321 | /* Convert an address object (vector or string) to an internal sockaddr. | |
2322 | Format of address has already been validated by size_lisp_to_sockaddr. */ | |
2323 | ||
2324 | static void | |
2325 | conv_lisp_to_sockaddr (family, address, sa, len) | |
2326 | int family; | |
2327 | Lisp_Object address; | |
2328 | struct sockaddr *sa; | |
2329 | int len; | |
2330 | { | |
2331 | register struct Lisp_Vector *p; | |
34967d0f | 2332 | register unsigned char *cp = NULL; |
e690ca94 KS |
2333 | register int i; |
2334 | ||
2335 | bzero (sa, len); | |
2336 | sa->sa_family = family; | |
2337 | ||
2338 | if (VECTORP (address)) | |
2339 | { | |
2340 | p = XVECTOR (address); | |
2341 | if (family == AF_INET) | |
2342 | { | |
2343 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
2344 | len = sizeof (sin->sin_addr) + 1; | |
2345 | i = XINT (p->contents[--len]); | |
2346 | sin->sin_port = htons (i); | |
2347 | cp = (unsigned char *)&sin->sin_addr; | |
2348 | } | |
e1652a86 KS |
2349 | #ifdef AF_INET6 |
2350 | else if (family == AF_INET6) | |
2351 | { | |
2352 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
2353 | uint16_t *ip6 = (uint16_t *)&sin6->sin6_addr; | |
2354 | len = sizeof (sin6->sin6_addr) + 1; | |
2355 | i = XINT (p->contents[--len]); | |
2356 | sin6->sin6_port = htons (i); | |
2357 | for (i = 0; i < len; i++) | |
2358 | if (INTEGERP (p->contents[i])) | |
2359 | { | |
2360 | int j = XFASTINT (p->contents[i]) & 0xffff; | |
2361 | ip6[i] = ntohs (j); | |
2362 | } | |
2363 | return; | |
2364 | } | |
2365 | #endif | |
e690ca94 KS |
2366 | } |
2367 | else if (STRINGP (address)) | |
2368 | { | |
2369 | #ifdef HAVE_LOCAL_SOCKETS | |
2370 | if (family == AF_LOCAL) | |
2371 | { | |
fb23673a | 2372 | struct sockaddr_un *sockun = (struct sockaddr_un *) sa; |
d5db4077 | 2373 | cp = SDATA (address); |
fb23673a EZ |
2374 | for (i = 0; i < sizeof (sockun->sun_path) && *cp; i++) |
2375 | sockun->sun_path[i] = *cp++; | |
e690ca94 KS |
2376 | } |
2377 | #endif | |
2378 | return; | |
2379 | } | |
2380 | else | |
2381 | { | |
2382 | p = XVECTOR (XCDR (address)); | |
2383 | cp = (unsigned char *)sa + sizeof (sa->sa_family); | |
2384 | } | |
2385 | ||
2386 | for (i = 0; i < len; i++) | |
2387 | if (INTEGERP (p->contents[i])) | |
2388 | *cp++ = XFASTINT (p->contents[i]) & 0xff; | |
2389 | } | |
2390 | ||
2391 | #ifdef DATAGRAM_SOCKETS | |
2392 | DEFUN ("process-datagram-address", Fprocess_datagram_address, Sprocess_datagram_address, | |
2393 | 1, 1, 0, | |
2394 | doc: /* Get the current datagram address associated with PROCESS. */) | |
2395 | (process) | |
2396 | Lisp_Object process; | |
2397 | { | |
2398 | int channel; | |
2399 | ||
2400 | CHECK_PROCESS (process); | |
2401 | ||
2402 | if (!DATAGRAM_CONN_P (process)) | |
2403 | return Qnil; | |
2404 | ||
bed9664a | 2405 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2406 | return conv_sockaddr_to_lisp (datagram_address[channel].sa, |
2407 | datagram_address[channel].len); | |
2408 | } | |
2409 | ||
2410 | DEFUN ("set-process-datagram-address", Fset_process_datagram_address, Sset_process_datagram_address, | |
2411 | 2, 2, 0, | |
2412 | doc: /* Set the datagram address for PROCESS to ADDRESS. | |
2413 | Returns nil upon error setting address, ADDRESS otherwise. */) | |
2414 | (process, address) | |
2415 | Lisp_Object process, address; | |
2416 | { | |
2417 | int channel; | |
2418 | int family, len; | |
2419 | ||
2420 | CHECK_PROCESS (process); | |
2421 | ||
2422 | if (!DATAGRAM_CONN_P (process)) | |
2423 | return Qnil; | |
2424 | ||
bed9664a | 2425 | channel = XINT (XPROCESS (process)->infd); |
e690ca94 KS |
2426 | |
2427 | len = get_lisp_to_sockaddr_size (address, &family); | |
2428 | if (datagram_address[channel].len != len) | |
2429 | return Qnil; | |
2430 | conv_lisp_to_sockaddr (family, address, datagram_address[channel].sa, len); | |
2431 | return address; | |
2432 | } | |
2433 | #endif | |
2434 | \f | |
2435 | ||
2436 | static struct socket_options { | |
2437 | /* The name of this option. Should be lowercase version of option | |
177c0ea7 | 2438 | name without SO_ prefix. */ |
e690ca94 | 2439 | char *name; |
e690ca94 KS |
2440 | /* Option level SOL_... */ |
2441 | int optlevel; | |
2442 | /* Option number SO_... */ | |
2443 | int optnum; | |
151ec9e2 | 2444 | enum { SOPT_UNKNOWN, SOPT_BOOL, SOPT_INT, SOPT_IFNAME, SOPT_LINGER } opttype; |
2ccf3102 | 2445 | enum { OPIX_NONE=0, OPIX_MISC=1, OPIX_REUSEADDR=2 } optbit; |
e690ca94 KS |
2446 | } socket_options[] = |
2447 | { | |
2448 | #ifdef SO_BINDTODEVICE | |
151ec9e2 | 2449 | { ":bindtodevice", SOL_SOCKET, SO_BINDTODEVICE, SOPT_IFNAME, OPIX_MISC }, |
e690ca94 KS |
2450 | #endif |
2451 | #ifdef SO_BROADCAST | |
2ccf3102 | 2452 | { ":broadcast", SOL_SOCKET, SO_BROADCAST, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2453 | #endif |
2454 | #ifdef SO_DONTROUTE | |
2ccf3102 | 2455 | { ":dontroute", SOL_SOCKET, SO_DONTROUTE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2456 | #endif |
2457 | #ifdef SO_KEEPALIVE | |
2ccf3102 | 2458 | { ":keepalive", SOL_SOCKET, SO_KEEPALIVE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2459 | #endif |
2460 | #ifdef SO_LINGER | |
2ccf3102 | 2461 | { ":linger", SOL_SOCKET, SO_LINGER, SOPT_LINGER, OPIX_MISC }, |
e690ca94 KS |
2462 | #endif |
2463 | #ifdef SO_OOBINLINE | |
2ccf3102 | 2464 | { ":oobinline", SOL_SOCKET, SO_OOBINLINE, SOPT_BOOL, OPIX_MISC }, |
e690ca94 KS |
2465 | #endif |
2466 | #ifdef SO_PRIORITY | |
2ccf3102 | 2467 | { ":priority", SOL_SOCKET, SO_PRIORITY, SOPT_INT, OPIX_MISC }, |
e690ca94 KS |
2468 | #endif |
2469 | #ifdef SO_REUSEADDR | |
2ccf3102 | 2470 | { ":reuseaddr", SOL_SOCKET, SO_REUSEADDR, SOPT_BOOL, OPIX_REUSEADDR }, |
e690ca94 | 2471 | #endif |
2ccf3102 | 2472 | { 0, 0, 0, SOPT_UNKNOWN, OPIX_NONE } |
e690ca94 KS |
2473 | }; |
2474 | ||
2ccf3102 | 2475 | /* Set option OPT to value VAL on socket S. |
e690ca94 | 2476 | |
2ccf3102 KS |
2477 | Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise. |
2478 | Signals an error if setting a known option fails. | |
2479 | */ | |
e690ca94 KS |
2480 | |
2481 | static int | |
2ccf3102 | 2482 | set_socket_option (s, opt, val) |
e690ca94 | 2483 | int s; |
2ccf3102 | 2484 | Lisp_Object opt, val; |
e690ca94 | 2485 | { |
2ccf3102 KS |
2486 | char *name; |
2487 | struct socket_options *sopt; | |
2488 | int ret = 0; | |
e690ca94 | 2489 | |
2ccf3102 | 2490 | CHECK_SYMBOL (opt); |
e690ca94 | 2491 | |
2ccf3102 KS |
2492 | name = (char *) SDATA (SYMBOL_NAME (opt)); |
2493 | for (sopt = socket_options; sopt->name; sopt++) | |
2494 | if (strcmp (name, sopt->name) == 0) | |
2495 | break; | |
e690ca94 | 2496 | |
2ccf3102 KS |
2497 | switch (sopt->opttype) |
2498 | { | |
2499 | case SOPT_BOOL: | |
2500 | { | |
2501 | int optval; | |
2502 | optval = NILP (val) ? 0 : 1; | |
2503 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2504 | &optval, sizeof (optval)); | |
2505 | break; | |
2506 | } | |
e690ca94 | 2507 | |
2ccf3102 KS |
2508 | case SOPT_INT: |
2509 | { | |
2510 | int optval; | |
2511 | if (INTEGERP (val)) | |
2512 | optval = XINT (val); | |
2513 | else | |
2514 | error ("Bad option value for %s", name); | |
2515 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2516 | &optval, sizeof (optval)); | |
2517 | break; | |
2518 | } | |
e690ca94 | 2519 | |
151ec9e2 KS |
2520 | #ifdef SO_BINDTODEVICE |
2521 | case SOPT_IFNAME: | |
2ccf3102 | 2522 | { |
151ec9e2 KS |
2523 | char devname[IFNAMSIZ+1]; |
2524 | ||
2525 | /* This is broken, at least in the Linux 2.4 kernel. | |
2526 | To unbind, the arg must be a zero integer, not the empty string. | |
2527 | This should work on all systems. KFS. 2003-09-23. */ | |
2528 | bzero (devname, sizeof devname); | |
2529 | if (STRINGP (val)) | |
2530 | { | |
2531 | char *arg = (char *) SDATA (val); | |
2532 | int len = min (strlen (arg), IFNAMSIZ); | |
2533 | bcopy (arg, devname, len); | |
2534 | } | |
2535 | else if (!NILP (val)) | |
2ccf3102 KS |
2536 | error ("Bad option value for %s", name); |
2537 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
151ec9e2 KS |
2538 | devname, IFNAMSIZ); |
2539 | break; | |
2ccf3102 | 2540 | } |
151ec9e2 | 2541 | #endif |
e690ca94 | 2542 | |
177c0ea7 | 2543 | #ifdef SO_LINGER |
2ccf3102 KS |
2544 | case SOPT_LINGER: |
2545 | { | |
2546 | struct linger linger; | |
e690ca94 | 2547 | |
2ccf3102 KS |
2548 | linger.l_onoff = 1; |
2549 | linger.l_linger = 0; | |
2550 | if (INTEGERP (val)) | |
2551 | linger.l_linger = XINT (val); | |
2552 | else | |
2553 | linger.l_onoff = NILP (val) ? 0 : 1; | |
2554 | ret = setsockopt (s, sopt->optlevel, sopt->optnum, | |
2555 | &linger, sizeof (linger)); | |
2556 | break; | |
2557 | } | |
e690ca94 | 2558 | #endif |
2ccf3102 KS |
2559 | |
2560 | default: | |
2561 | return 0; | |
e690ca94 | 2562 | } |
2ccf3102 KS |
2563 | |
2564 | if (ret < 0) | |
2565 | report_file_error ("Cannot set network option", | |
2566 | Fcons (opt, Fcons (val, Qnil))); | |
2567 | return (1 << sopt->optbit); | |
e690ca94 KS |
2568 | } |
2569 | ||
2ccf3102 KS |
2570 | |
2571 | DEFUN ("set-network-process-option", | |
2572 | Fset_network_process_option, Sset_network_process_option, | |
2573 | 3, 4, 0, | |
2574 | doc: /* For network process PROCESS set option OPTION to value VALUE. | |
2575 | See `make-network-process' for a list of options and values. | |
2576 | If optional fourth arg NO-ERROR is non-nil, don't signal an error if | |
2577 | OPTION is not a supported option, return nil instead; otherwise return t. */) | |
2578 | (process, option, value, no_error) | |
2579 | Lisp_Object process, option, value; | |
2580 | Lisp_Object no_error; | |
e690ca94 | 2581 | { |
e1283999 | 2582 | int s; |
151ec9e2 | 2583 | struct Lisp_Process *p; |
e690ca94 | 2584 | |
e690ca94 | 2585 | CHECK_PROCESS (process); |
151ec9e2 KS |
2586 | p = XPROCESS (process); |
2587 | if (!NETCONN1_P (p)) | |
2588 | error ("Process is not a network process"); | |
2ccf3102 | 2589 | |
151ec9e2 | 2590 | s = XINT (p->infd); |
2ccf3102 KS |
2591 | if (s < 0) |
2592 | error ("Process is not running"); | |
2593 | ||
2594 | if (set_socket_option (s, option, value)) | |
151ec9e2 KS |
2595 | { |
2596 | p->childp = Fplist_put (p->childp, option, value); | |
2597 | return Qt; | |
2598 | } | |
2ccf3102 KS |
2599 | |
2600 | if (NILP (no_error)) | |
2601 | error ("Unknown or unsupported option"); | |
2602 | ||
2603 | return Qnil; | |
e690ca94 | 2604 | } |
2ccf3102 | 2605 | |
e690ca94 | 2606 | \f |
e690ca94 KS |
2607 | /* A version of request_sigio suitable for a record_unwind_protect. */ |
2608 | ||
ff6daed3 | 2609 | static Lisp_Object |
e690ca94 KS |
2610 | unwind_request_sigio (dummy) |
2611 | Lisp_Object dummy; | |
2612 | { | |
2613 | if (interrupt_input) | |
2614 | request_sigio (); | |
2615 | return Qnil; | |
2616 | } | |
2617 | ||
2618 | /* Create a network stream/datagram client/server process. Treated | |
2619 | exactly like a normal process when reading and writing. Primary | |
d0d6b7c5 JB |
2620 | differences are in status display and process deletion. A network |
2621 | connection has no PID; you cannot signal it. All you can do is | |
e690ca94 KS |
2622 | stop/continue it and deactivate/close it via delete-process */ |
2623 | ||
177c0ea7 JB |
2624 | DEFUN ("make-network-process", Fmake_network_process, Smake_network_process, |
2625 | 0, MANY, 0, | |
e690ca94 KS |
2626 | doc: /* Create and return a network server or client process. |
2627 | ||
fa9d4315 | 2628 | In Emacs, network connections are represented by process objects, so |
e690ca94 KS |
2629 | input and output work as for subprocesses and `delete-process' closes |
2630 | a network connection. However, a network process has no process id, | |
d22426e1 | 2631 | it cannot be signaled, and the status codes are different from normal |
e690ca94 KS |
2632 | processes. |
2633 | ||
2634 | Arguments are specified as keyword/argument pairs. The following | |
2635 | arguments are defined: | |
2636 | ||
2637 | :name NAME -- NAME is name for process. It is modified if necessary | |
2638 | to make it unique. | |
2639 | ||
2640 | :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate | |
2641 | with the process. Process output goes at end of that buffer, unless | |
2642 | you specify an output stream or filter function to handle the output. | |
2643 | BUFFER may be also nil, meaning that this process is not associated | |
2644 | with any buffer. | |
2645 | ||
2646 | :host HOST -- HOST is name of the host to connect to, or its IP | |
2647 | address. The symbol `local' specifies the local host. If specified | |
2648 | for a server process, it must be a valid name or address for the local | |
2649 | host, and only clients connecting to that address will be accepted. | |
2650 | ||
2651 | :service SERVICE -- SERVICE is name of the service desired, or an | |
2652 | integer specifying a port number to connect to. If SERVICE is t, | |
2653 | a random port number is selected for the server. | |
2654 | ||
9057ff80 KS |
2655 | :type TYPE -- TYPE is the type of connection. The default (nil) is a |
2656 | stream type connection, `datagram' creates a datagram type connection. | |
2657 | ||
e690ca94 | 2658 | :family FAMILY -- FAMILY is the address (and protocol) family for the |
e1652a86 KS |
2659 | service specified by HOST and SERVICE. The default (nil) is to use |
2660 | whatever address family (IPv4 or IPv6) that is defined for the host | |
2661 | and port number specified by HOST and SERVICE. Other address families | |
2662 | supported are: | |
e690ca94 | 2663 | local -- for a local (i.e. UNIX) address specified by SERVICE. |
e1652a86 KS |
2664 | ipv4 -- use IPv4 address family only. |
2665 | ipv6 -- use IPv6 address family only. | |
e690ca94 KS |
2666 | |
2667 | :local ADDRESS -- ADDRESS is the local address used for the connection. | |
2668 | This parameter is ignored when opening a client process. When specified | |
2669 | for a server process, the FAMILY, HOST and SERVICE args are ignored. | |
2670 | ||
2671 | :remote ADDRESS -- ADDRESS is the remote partner's address for the | |
2672 | connection. This parameter is ignored when opening a stream server | |
2673 | process. For a datagram server process, it specifies the initial | |
2674 | setting of the remote datagram address. When specified for a client | |
2675 | process, the FAMILY, HOST, and SERVICE args are ignored. | |
2676 | ||
2677 | The format of ADDRESS depends on the address family: | |
2678 | - An IPv4 address is represented as an vector of integers [A B C D P] | |
2679 | corresponding to numeric IP address A.B.C.D and port number P. | |
2680 | - A local address is represented as a string with the address in the | |
2681 | local address space. | |
2682 | - An "unsupported family" address is represented by a cons (F . AV) | |
2683 | where F is the family number and AV is a vector containing the socket | |
2684 | address data with one element per address data byte. Do not rely on | |
2685 | this format in portable code, as it may depend on implementation | |
2686 | defined constants, data sizes, and data structure alignment. | |
2687 | ||
2ccf3102 KS |
2688 | :coding CODING -- If CODING is a symbol, it specifies the coding |
2689 | system used for both reading and writing for this process. If CODING | |
2690 | is a cons (DECODING . ENCODING), DECODING is used for reading, and | |
2691 | ENCODING is used for writing. | |
e690ca94 KS |
2692 | |
2693 | :nowait BOOL -- If BOOL is non-nil for a stream type client process, | |
2694 | return without waiting for the connection to complete; instead, the | |
2695 | sentinel function will be called with second arg matching "open" (if | |
2696 | successful) or "failed" when the connect completes. Default is to use | |
2697 | a blocking connect (i.e. wait) for stream type connections. | |
2698 | ||
2699 | :noquery BOOL -- Query the user unless BOOL is non-nil, and process is | |
f3d9532b | 2700 | running when Emacs is exited. |
e690ca94 KS |
2701 | |
2702 | :stop BOOL -- Start process in the `stopped' state if BOOL non-nil. | |
2703 | In the stopped state, a server process does not accept new | |
2704 | connections, and a client process does not handle incoming traffic. | |
2705 | The stopped state is cleared by `continue-process' and set by | |
2706 | `stop-process'. | |
2707 | ||
2708 | :filter FILTER -- Install FILTER as the process filter. | |
2709 | ||
7392e23c KS |
2710 | :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the |
2711 | process filter are multibyte, otherwise they are unibyte. | |
2712 | If this keyword is not specified, the strings are multibyte iff | |
03f04413 KH |
2713 | `default-enable-multibyte-characters' is non-nil. |
2714 | ||
e690ca94 KS |
2715 | :sentinel SENTINEL -- Install SENTINEL as the process sentinel. |
2716 | ||
2717 | :log LOG -- Install LOG as the server process log function. This | |
991234f0 | 2718 | function is called when the server accepts a network connection from a |
e690ca94 KS |
2719 | client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER |
2720 | is the server process, CLIENT is the new process for the connection, | |
2721 | and MESSAGE is a string. | |
2722 | ||
faa7db08 | 2723 | :plist PLIST -- Install PLIST as the new process' initial plist. |
177c0ea7 | 2724 | |
2ccf3102 | 2725 | :server QLEN -- if QLEN is non-nil, create a server process for the |
e690ca94 | 2726 | specified FAMILY, SERVICE, and connection type (stream or datagram). |
2ccf3102 KS |
2727 | If QLEN is an integer, it is used as the max. length of the server's |
2728 | pending connection queue (also known as the backlog); the default | |
2729 | queue length is 5. Default is to create a client process. | |
2730 | ||
2731 | The following network options can be specified for this connection: | |
2732 | ||
2ccf3102 KS |
2733 | :broadcast BOOL -- Allow send and receive of datagram broadcasts. |
2734 | :dontroute BOOL -- Only send to directly connected hosts. | |
2735 | :keepalive BOOL -- Send keep-alive messages on network stream. | |
2736 | :linger BOOL or TIMEOUT -- Send queued messages before closing. | |
2737 | :oobinline BOOL -- Place out-of-band data in receive data stream. | |
2738 | :priority INT -- Set protocol defined priority for sent packets. | |
2739 | :reuseaddr BOOL -- Allow reusing a recently used local address | |
2740 | (this is allowed by default for a server process). | |
151ec9e2 KS |
2741 | :bindtodevice NAME -- bind to interface NAME. Using this may require |
2742 | special privileges on some systems. | |
2ccf3102 KS |
2743 | |
2744 | Consult the relevant system programmer's manual pages for more | |
2745 | information on using these options. | |
2746 | ||
2747 | ||
2748 | A server process will listen for and accept connections from clients. | |
2749 | When a client connection is accepted, a new network process is created | |
2750 | for the connection with the following parameters: | |
e690ca94 | 2751 | |
e690ca94 KS |
2752 | - The client's process name is constructed by concatenating the server |
2753 | process' NAME and a client identification string. | |
2754 | - If the FILTER argument is non-nil, the client process will not get a | |
2755 | separate process buffer; otherwise, the client's process buffer is a newly | |
2756 | created buffer named after the server process' BUFFER name or process | |
177c0ea7 | 2757 | NAME concatenated with the client identification string. |
e690ca94 KS |
2758 | - The connection type and the process filter and sentinel parameters are |
2759 | inherited from the server process' TYPE, FILTER and SENTINEL. | |
2760 | - The client process' contact info is set according to the client's | |
2761 | addressing information (typically an IP address and a port number). | |
faa7db08 | 2762 | - The client process' plist is initialized from the server's plist. |
e690ca94 KS |
2763 | |
2764 | Notice that the FILTER and SENTINEL args are never used directly by | |
2765 | the server process. Also, the BUFFER argument is not used directly by | |
9e9a5792 KS |
2766 | the server process, but via the optional :log function, accepted (and |
2767 | failed) connections may be logged in the server process' buffer. | |
e690ca94 | 2768 | |
365aee82 KS |
2769 | The original argument list, modified with the actual connection |
2770 | information, is available via the `process-contact' function. | |
365aee82 | 2771 | |
fa9d4315 | 2772 | usage: (make-network-process &rest ARGS) */) |
e690ca94 KS |
2773 | (nargs, args) |
2774 | int nargs; | |
2775 | Lisp_Object *args; | |
d0d6b7c5 JB |
2776 | { |
2777 | Lisp_Object proc; | |
e690ca94 KS |
2778 | Lisp_Object contact; |
2779 | struct Lisp_Process *p; | |
70dbdb36 | 2780 | #ifdef HAVE_GETADDRINFO |
e690ca94 | 2781 | struct addrinfo ai, *res, *lres; |
e1652a86 KS |
2782 | struct addrinfo hints; |
2783 | char *portstring, portbuf[128]; | |
70dbdb36 | 2784 | #else /* HAVE_GETADDRINFO */ |
dd2a17ab KS |
2785 | struct _emacs_addrinfo |
2786 | { | |
2787 | int ai_family; | |
2788 | int ai_socktype; | |
2789 | int ai_protocol; | |
2790 | int ai_addrlen; | |
2791 | struct sockaddr *ai_addr; | |
2792 | struct _emacs_addrinfo *ai_next; | |
2793 | } ai, *res, *lres; | |
418b48fd | 2794 | #endif /* HAVE_GETADDRINFO */ |
e690ca94 KS |
2795 | struct sockaddr_in address_in; |
2796 | #ifdef HAVE_LOCAL_SOCKETS | |
2797 | struct sockaddr_un address_un; | |
2798 | #endif | |
2799 | int port; | |
dd2a17ab KS |
2800 | int ret = 0; |
2801 | int xerrno = 0; | |
418b48fd | 2802 | int s = -1, outch, inch; |
e690ca94 | 2803 | struct gcpro gcpro1; |
aed13378 | 2804 | int count = SPECPDL_INDEX (); |
5684cd6e | 2805 | int count1; |
e690ca94 KS |
2806 | Lisp_Object QCaddress; /* one of QClocal or QCremote */ |
2807 | Lisp_Object tem; | |
2808 | Lisp_Object name, buffer, host, service, address; | |
2809 | Lisp_Object filter, sentinel; | |
2810 | int is_non_blocking_client = 0; | |
2ccf3102 | 2811 | int is_server = 0, backlog = 5; |
9057ff80 | 2812 | int socktype; |
e690ca94 KS |
2813 | int family = -1; |
2814 | ||
2815 | if (nargs == 0) | |
2816 | return Qnil; | |
dd2a17ab | 2817 | |
e690ca94 KS |
2818 | /* Save arguments for process-contact and clone-process. */ |
2819 | contact = Flist (nargs, args); | |
2820 | GCPRO1 (contact); | |
2821 | ||
bff3ed0a RS |
2822 | #ifdef WINDOWSNT |
2823 | /* Ensure socket support is loaded if available. */ | |
2824 | init_winsock (TRUE); | |
2825 | #endif | |
2826 | ||
9057ff80 KS |
2827 | /* :type TYPE (nil: stream, datagram */ |
2828 | tem = Fplist_get (contact, QCtype); | |
2829 | if (NILP (tem)) | |
2830 | socktype = SOCK_STREAM; | |
2831 | #ifdef DATAGRAM_SOCKETS | |
2832 | else if (EQ (tem, Qdatagram)) | |
2833 | socktype = SOCK_DGRAM; | |
e690ca94 | 2834 | #endif |
9057ff80 KS |
2835 | else |
2836 | error ("Unsupported connection type"); | |
e690ca94 KS |
2837 | |
2838 | /* :server BOOL */ | |
2839 | tem = Fplist_get (contact, QCserver); | |
2840 | if (!NILP (tem)) | |
2841 | { | |
75728599 JR |
2842 | /* Don't support network sockets when non-blocking mode is |
2843 | not available, since a blocked Emacs is not useful. */ | |
2844 | #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY)) | |
e690ca94 KS |
2845 | error ("Network servers not supported"); |
2846 | #else | |
2847 | is_server = 1; | |
2ccf3102 KS |
2848 | if (INTEGERP (tem)) |
2849 | backlog = XINT (tem); | |
e690ca94 KS |
2850 | #endif |
2851 | } | |
2852 | ||
2853 | /* Make QCaddress an alias for :local (server) or :remote (client). */ | |
2854 | QCaddress = is_server ? QClocal : QCremote; | |
2855 | ||
2856 | /* :wait BOOL */ | |
2857 | if (!is_server && socktype == SOCK_STREAM | |
2858 | && (tem = Fplist_get (contact, QCnowait), !NILP (tem))) | |
2859 | { | |
2860 | #ifndef NON_BLOCKING_CONNECT | |
2861 | error ("Non-blocking connect not supported"); | |
2862 | #else | |
2863 | is_non_blocking_client = 1; | |
2864 | #endif | |
2865 | } | |
2866 | ||
2867 | name = Fplist_get (contact, QCname); | |
2868 | buffer = Fplist_get (contact, QCbuffer); | |
2869 | filter = Fplist_get (contact, QCfilter); | |
2870 | sentinel = Fplist_get (contact, QCsentinel); | |
2871 | ||
b7826503 | 2872 | CHECK_STRING (name); |
e690ca94 KS |
2873 | |
2874 | #ifdef TERM | |
2875 | /* Let's handle TERM before things get complicated ... */ | |
2876 | host = Fplist_get (contact, QChost); | |
b7826503 | 2877 | CHECK_STRING (host); |
177c0ea7 | 2878 | |
e690ca94 KS |
2879 | service = Fplist_get (contact, QCservice); |
2880 | if (INTEGERP (service)) | |
2881 | port = htons ((unsigned short) XINT (service)); | |
2882 | else | |
2883 | { | |
2884 | struct servent *svc_info; | |
2885 | CHECK_STRING (service); | |
d5db4077 | 2886 | svc_info = getservbyname (SDATA (service), "tcp"); |
e690ca94 | 2887 | if (svc_info == 0) |
d5db4077 | 2888 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
2889 | port = svc_info->s_port; |
2890 | } | |
2891 | ||
2892 | s = connect_server (0); | |
2893 | if (s < 0) | |
2894 | report_file_error ("error creating socket", Fcons (name, Qnil)); | |
d5db4077 | 2895 | send_command (s, C_PORT, 0, "%s:%d", SDATA (host), ntohs (port)); |
e690ca94 KS |
2896 | send_command (s, C_DUMB, 1, 0); |
2897 | ||
2898 | #else /* not TERM */ | |
2899 | ||
2900 | /* Initialize addrinfo structure in case we don't use getaddrinfo. */ | |
2901 | ai.ai_socktype = socktype; | |
2902 | ai.ai_protocol = 0; | |
2903 | ai.ai_next = NULL; | |
2904 | res = &ai; | |
a319f7c1 | 2905 | |
e690ca94 KS |
2906 | /* :local ADDRESS or :remote ADDRESS */ |
2907 | address = Fplist_get (contact, QCaddress); | |
2908 | if (!NILP (address)) | |
a319f7c1 | 2909 | { |
e690ca94 KS |
2910 | host = service = Qnil; |
2911 | ||
2912 | if (!(ai.ai_addrlen = get_lisp_to_sockaddr_size (address, &family))) | |
2913 | error ("Malformed :address"); | |
2914 | ai.ai_family = family; | |
2915 | ai.ai_addr = alloca (ai.ai_addrlen); | |
2916 | conv_lisp_to_sockaddr (family, address, ai.ai_addr, ai.ai_addrlen); | |
2917 | goto open_socket; | |
a319f7c1 | 2918 | } |
e690ca94 KS |
2919 | |
2920 | /* :family FAMILY -- nil (for Inet), local, or integer. */ | |
2921 | tem = Fplist_get (contact, QCfamily); | |
e1652a86 | 2922 | if (NILP (tem)) |
a319f7c1 | 2923 | { |
e1652a86 KS |
2924 | #ifdef HAVE_GETADDRINFO |
2925 | family = AF_UNSPEC; | |
2926 | #else | |
2927 | family = AF_INET; | |
e690ca94 | 2928 | #endif |
a319f7c1 | 2929 | } |
e1652a86 KS |
2930 | #ifdef HAVE_LOCAL_SOCKETS |
2931 | else if (EQ (tem, Qlocal)) | |
2932 | family = AF_LOCAL; | |
2933 | #endif | |
2934 | #ifdef AF_INET6 | |
2935 | else if (EQ (tem, Qipv6)) | |
2936 | family = AF_INET6; | |
2937 | #endif | |
2938 | else if (EQ (tem, Qipv4)) | |
2939 | family = AF_INET; | |
2940 | else if (INTEGERP (tem)) | |
2941 | family = XINT (tem); | |
2942 | else | |
e690ca94 | 2943 | error ("Unknown address family"); |
e1652a86 | 2944 | |
e690ca94 KS |
2945 | ai.ai_family = family; |
2946 | ||
2947 | /* :service SERVICE -- string, integer (port number), or t (random port). */ | |
2948 | service = Fplist_get (contact, QCservice); | |
2949 | ||
2950 | #ifdef HAVE_LOCAL_SOCKETS | |
2951 | if (family == AF_LOCAL) | |
d0d6b7c5 | 2952 | { |
e690ca94 KS |
2953 | /* Host is not used. */ |
2954 | host = Qnil; | |
b7826503 | 2955 | CHECK_STRING (service); |
e690ca94 KS |
2956 | bzero (&address_un, sizeof address_un); |
2957 | address_un.sun_family = AF_LOCAL; | |
d5db4077 | 2958 | strncpy (address_un.sun_path, SDATA (service), sizeof address_un.sun_path); |
e690ca94 KS |
2959 | ai.ai_addr = (struct sockaddr *) &address_un; |
2960 | ai.ai_addrlen = sizeof address_un; | |
2961 | goto open_socket; | |
d0d6b7c5 | 2962 | } |
e690ca94 | 2963 | #endif |
a319f7c1 | 2964 | |
e690ca94 KS |
2965 | /* :host HOST -- hostname, ip address, or 'local for localhost. */ |
2966 | host = Fplist_get (contact, QChost); | |
2967 | if (!NILP (host)) | |
2968 | { | |
2969 | if (EQ (host, Qlocal)) | |
2970 | host = build_string ("localhost"); | |
2971 | CHECK_STRING (host); | |
2972 | } | |
d0d6b7c5 | 2973 | |
798b64bb KH |
2974 | /* Slow down polling to every ten seconds. |
2975 | Some kernels have a bug which causes retrying connect to fail | |
2976 | after a connect. Polling can interfere with gethostbyname too. */ | |
2977 | #ifdef POLL_FOR_INPUT | |
e690ca94 KS |
2978 | if (socktype == SOCK_STREAM) |
2979 | { | |
2980 | record_unwind_protect (unwind_stop_other_atimers, Qnil); | |
2981 | bind_polling_period (10); | |
2982 | } | |
798b64bb KH |
2983 | #endif |
2984 | ||
a319f7c1 | 2985 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
2986 | /* If we have a host, use getaddrinfo to resolve both host and service. |
2987 | Otherwise, use getservbyname to lookup the service. */ | |
2988 | if (!NILP (host)) | |
2989 | { | |
2990 | ||
2991 | /* SERVICE can either be a string or int. | |
2992 | Convert to a C string for later use by getaddrinfo. */ | |
2993 | if (EQ (service, Qt)) | |
2994 | portstring = "0"; | |
2995 | else if (INTEGERP (service)) | |
2996 | { | |
2997 | sprintf (portbuf, "%ld", (long) XINT (service)); | |
2998 | portstring = portbuf; | |
2999 | } | |
3000 | else | |
3001 | { | |
3002 | CHECK_STRING (service); | |
d5db4077 | 3003 | portstring = SDATA (service); |
e690ca94 KS |
3004 | } |
3005 | ||
3006 | immediate_quit = 1; | |
3007 | QUIT; | |
3008 | memset (&hints, 0, sizeof (hints)); | |
3009 | hints.ai_flags = 0; | |
e1652a86 | 3010 | hints.ai_family = family; |
e690ca94 KS |
3011 | hints.ai_socktype = socktype; |
3012 | hints.ai_protocol = 0; | |
d5db4077 | 3013 | ret = getaddrinfo (SDATA (host), portstring, &hints, &res); |
e690ca94 | 3014 | if (ret) |
f6270f62 | 3015 | #ifdef HAVE_GAI_STRERROR |
d5db4077 | 3016 | error ("%s/%s %s", SDATA (host), portstring, gai_strerror(ret)); |
f6270f62 | 3017 | #else |
d5db4077 | 3018 | error ("%s/%s getaddrinfo error %d", SDATA (host), portstring, ret); |
f6270f62 | 3019 | #endif |
e690ca94 | 3020 | immediate_quit = 0; |
a319f7c1 | 3021 | |
e690ca94 KS |
3022 | goto open_socket; |
3023 | } | |
3024 | #endif /* HAVE_GETADDRINFO */ | |
a319f7c1 | 3025 | |
e690ca94 KS |
3026 | /* We end up here if getaddrinfo is not defined, or in case no hostname |
3027 | has been specified (e.g. for a local server process). */ | |
3028 | ||
3029 | if (EQ (service, Qt)) | |
3030 | port = 0; | |
3031 | else if (INTEGERP (service)) | |
3032 | port = htons ((unsigned short) XINT (service)); | |
3033 | else | |
616da37c | 3034 | { |
e690ca94 KS |
3035 | struct servent *svc_info; |
3036 | CHECK_STRING (service); | |
177c0ea7 | 3037 | svc_info = getservbyname (SDATA (service), |
e690ca94 KS |
3038 | (socktype == SOCK_DGRAM ? "udp" : "tcp")); |
3039 | if (svc_info == 0) | |
d5db4077 | 3040 | error ("Unknown service: %s", SDATA (service)); |
e690ca94 KS |
3041 | port = svc_info->s_port; |
3042 | } | |
3043 | ||
3044 | bzero (&address_in, sizeof address_in); | |
3045 | address_in.sin_family = family; | |
3046 | address_in.sin_addr.s_addr = INADDR_ANY; | |
3047 | address_in.sin_port = port; | |
3048 | ||
3049 | #ifndef HAVE_GETADDRINFO | |
3050 | if (!NILP (host)) | |
3051 | { | |
3052 | struct hostent *host_info_ptr; | |
3053 | ||
3054 | /* gethostbyname may fail with TRY_AGAIN, but we don't honour that, | |
f3d9532b | 3055 | as it may `hang' Emacs for a very long time. */ |
5d6c2aa3 RS |
3056 | immediate_quit = 1; |
3057 | QUIT; | |
d5db4077 | 3058 | host_info_ptr = gethostbyname (SDATA (host)); |
5d6c2aa3 | 3059 | immediate_quit = 0; |
177c0ea7 | 3060 | |
e690ca94 KS |
3061 | if (host_info_ptr) |
3062 | { | |
3063 | bcopy (host_info_ptr->h_addr, (char *) &address_in.sin_addr, | |
3064 | host_info_ptr->h_length); | |
3065 | family = host_info_ptr->h_addrtype; | |
3066 | address_in.sin_family = family; | |
3067 | } | |
3068 | else | |
3069 | /* Attempt to interpret host as numeric inet address */ | |
3070 | { | |
3071 | IN_ADDR numeric_addr; | |
d5db4077 | 3072 | numeric_addr = inet_addr ((char *) SDATA (host)); |
e690ca94 | 3073 | if (NUMERIC_ADDR_ERROR) |
d5db4077 | 3074 | error ("Unknown host \"%s\"", SDATA (host)); |
d0d6b7c5 | 3075 | |
e690ca94 KS |
3076 | bcopy ((char *)&numeric_addr, (char *) &address_in.sin_addr, |
3077 | sizeof (address_in.sin_addr)); | |
3078 | } | |
d0d6b7c5 | 3079 | |
e690ca94 | 3080 | } |
dd2a17ab | 3081 | #endif /* not HAVE_GETADDRINFO */ |
d0d6b7c5 | 3082 | |
e690ca94 KS |
3083 | ai.ai_family = family; |
3084 | ai.ai_addr = (struct sockaddr *) &address_in; | |
3085 | ai.ai_addrlen = sizeof address_in; | |
3086 | ||
3087 | open_socket: | |
3088 | ||
3089 | /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR) | |
3090 | when connect is interrupted. So let's not let it get interrupted. | |
3091 | Note we do not turn off polling, because polling is only used | |
3092 | when not interrupt_input, and thus not normally used on the systems | |
3093 | which have this bug. On systems which use polling, there's no way | |
3094 | to quit if polling is turned off. */ | |
3095 | if (interrupt_input | |
3096 | && !is_server && socktype == SOCK_STREAM) | |
3097 | { | |
3098 | /* Comment from KFS: The original open-network-stream code | |
3099 | didn't unwind protect this, but it seems like the proper | |
3100 | thing to do. In any case, I don't see how it could harm to | |
3101 | do this -- and it makes cleanup (using unbind_to) easier. */ | |
3102 | record_unwind_protect (unwind_request_sigio, Qnil); | |
3103 | unrequest_sigio (); | |
3104 | } | |
3105 | ||
dd2a17ab | 3106 | /* Do this in case we never enter the for-loop below. */ |
aed13378 | 3107 | count1 = SPECPDL_INDEX (); |
dd2a17ab | 3108 | s = -1; |
457a9bee | 3109 | |
dd2a17ab KS |
3110 | for (lres = res; lres; lres = lres->ai_next) |
3111 | { | |
2ccf3102 KS |
3112 | int optn, optbits; |
3113 | ||
4e9dd03b KS |
3114 | retry_connect: |
3115 | ||
dd2a17ab KS |
3116 | s = socket (lres->ai_family, lres->ai_socktype, lres->ai_protocol); |
3117 | if (s < 0) | |
3118 | { | |
3119 | xerrno = errno; | |
3120 | continue; | |
3121 | } | |
0f2ee0c1 | 3122 | |
e690ca94 KS |
3123 | #ifdef DATAGRAM_SOCKETS |
3124 | if (!is_server && socktype == SOCK_DGRAM) | |
3125 | break; | |
3126 | #endif /* DATAGRAM_SOCKETS */ | |
3127 | ||
dd2a17ab | 3128 | #ifdef NON_BLOCKING_CONNECT |
e690ca94 | 3129 | if (is_non_blocking_client) |
dd2a17ab KS |
3130 | { |
3131 | #ifdef O_NONBLOCK | |
3132 | ret = fcntl (s, F_SETFL, O_NONBLOCK); | |
3133 | #else | |
3134 | ret = fcntl (s, F_SETFL, O_NDELAY); | |
3135 | #endif | |
3136 | if (ret < 0) | |
3137 | { | |
3138 | xerrno = errno; | |
3139 | emacs_close (s); | |
3140 | s = -1; | |
3141 | continue; | |
3142 | } | |
3143 | } | |
3144 | #endif | |
177c0ea7 | 3145 | |
dd2a17ab | 3146 | /* Make us close S if quit. */ |
dd2a17ab KS |
3147 | record_unwind_protect (close_file_unwind, make_number (s)); |
3148 | ||
2ccf3102 KS |
3149 | /* Parse network options in the arg list. |
3150 | We simply ignore anything which isn't a known option (including other keywords). | |
3151 | An error is signalled if setting a known option fails. */ | |
3152 | for (optn = optbits = 0; optn < nargs-1; optn += 2) | |
3153 | optbits |= set_socket_option (s, args[optn], args[optn+1]); | |
3154 | ||
e690ca94 KS |
3155 | if (is_server) |
3156 | { | |
3157 | /* Configure as a server socket. */ | |
2ccf3102 KS |
3158 | |
3159 | /* SO_REUSEADDR = 1 is default for server sockets; must specify | |
3160 | explicit :reuseaddr key to override this. */ | |
e690ca94 KS |
3161 | #ifdef HAVE_LOCAL_SOCKETS |
3162 | if (family != AF_LOCAL) | |
3163 | #endif | |
2ccf3102 KS |
3164 | if (!(optbits & (1 << OPIX_REUSEADDR))) |
3165 | { | |
3166 | int optval = 1; | |
3167 | if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof optval)) | |
7c402969 | 3168 | report_file_error ("Cannot set reuse option on server socket", Qnil); |
2ccf3102 | 3169 | } |
177c0ea7 | 3170 | |
e690ca94 KS |
3171 | if (bind (s, lres->ai_addr, lres->ai_addrlen)) |
3172 | report_file_error ("Cannot bind server socket", Qnil); | |
3173 | ||
3174 | #ifdef HAVE_GETSOCKNAME | |
3175 | if (EQ (service, Qt)) | |
3176 | { | |
3177 | struct sockaddr_in sa1; | |
3178 | int len1 = sizeof (sa1); | |
3179 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3180 | { | |
3181 | ((struct sockaddr_in *)(lres->ai_addr))->sin_port = sa1.sin_port; | |
21bd170d | 3182 | service = make_number (ntohs (sa1.sin_port)); |
e690ca94 KS |
3183 | contact = Fplist_put (contact, QCservice, service); |
3184 | } | |
3185 | } | |
3186 | #endif | |
3187 | ||
2ccf3102 | 3188 | if (socktype == SOCK_STREAM && listen (s, backlog)) |
e690ca94 KS |
3189 | report_file_error ("Cannot listen on server socket", Qnil); |
3190 | ||
3191 | break; | |
3192 | } | |
3193 | ||
dd2a17ab KS |
3194 | immediate_quit = 1; |
3195 | QUIT; | |
3196 | ||
3197 | /* This turns off all alarm-based interrupts; the | |
3198 | bind_polling_period call above doesn't always turn all the | |
3199 | short-interval ones off, especially if interrupt_input is | |
3200 | set. | |
3201 | ||
3202 | It'd be nice to be able to control the connect timeout | |
177c0ea7 | 3203 | though. Would non-blocking connect calls be portable? |
dd2a17ab KS |
3204 | |
3205 | This used to be conditioned by HAVE_GETADDRINFO. Why? */ | |
3206 | ||
f40f9848 | 3207 | turn_on_atimers (0); |
dd2a17ab KS |
3208 | |
3209 | ret = connect (s, lres->ai_addr, lres->ai_addrlen); | |
3210 | xerrno = errno; | |
3211 | ||
f40f9848 | 3212 | turn_on_atimers (1); |
dd2a17ab KS |
3213 | |
3214 | if (ret == 0 || xerrno == EISCONN) | |
3215 | { | |
dd2a17ab KS |
3216 | /* The unwind-protect will be discarded afterwards. |
3217 | Likewise for immediate_quit. */ | |
3218 | break; | |
3219 | } | |
3220 | ||
3221 | #ifdef NON_BLOCKING_CONNECT | |
3222 | #ifdef EINPROGRESS | |
e690ca94 | 3223 | if (is_non_blocking_client && xerrno == EINPROGRESS) |
dd2a17ab KS |
3224 | break; |
3225 | #else | |
3226 | #ifdef EWOULDBLOCK | |
e690ca94 | 3227 | if (is_non_blocking_client && xerrno == EWOULDBLOCK) |
dd2a17ab KS |
3228 | break; |
3229 | #endif | |
3230 | #endif | |
3231 | #endif | |
e333e864 | 3232 | |
0f2ee0c1 RS |
3233 | immediate_quit = 0; |
3234 | ||
dd2a17ab | 3235 | /* Discard the unwind protect closing S. */ |
5684cd6e | 3236 | specpdl_ptr = specpdl + count1; |
68c45bf0 | 3237 | emacs_close (s); |
dd2a17ab | 3238 | s = -1; |
4e9dd03b KS |
3239 | |
3240 | if (xerrno == EINTR) | |
3241 | goto retry_connect; | |
dd2a17ab | 3242 | } |
457a9bee | 3243 | |
e690ca94 KS |
3244 | if (s >= 0) |
3245 | { | |
3246 | #ifdef DATAGRAM_SOCKETS | |
3247 | if (socktype == SOCK_DGRAM) | |
3248 | { | |
3249 | if (datagram_address[s].sa) | |
3250 | abort (); | |
3251 | datagram_address[s].sa = (struct sockaddr *) xmalloc (lres->ai_addrlen); | |
3252 | datagram_address[s].len = lres->ai_addrlen; | |
3253 | if (is_server) | |
3254 | { | |
3255 | Lisp_Object remote; | |
3256 | bzero (datagram_address[s].sa, lres->ai_addrlen); | |
3257 | if (remote = Fplist_get (contact, QCremote), !NILP (remote)) | |
3258 | { | |
3259 | int rfamily, rlen; | |
3260 | rlen = get_lisp_to_sockaddr_size (remote, &rfamily); | |
3261 | if (rfamily == lres->ai_family && rlen == lres->ai_addrlen) | |
3262 | conv_lisp_to_sockaddr (rfamily, remote, | |
3263 | datagram_address[s].sa, rlen); | |
3264 | } | |
3265 | } | |
3266 | else | |
3267 | bcopy (lres->ai_addr, datagram_address[s].sa, lres->ai_addrlen); | |
3268 | } | |
3269 | #endif | |
177c0ea7 | 3270 | contact = Fplist_put (contact, QCaddress, |
e690ca94 | 3271 | conv_sockaddr_to_lisp (lres->ai_addr, lres->ai_addrlen)); |
2185db04 KS |
3272 | #ifdef HAVE_GETSOCKNAME |
3273 | if (!is_server) | |
3274 | { | |
3275 | struct sockaddr_in sa1; | |
3276 | int len1 = sizeof (sa1); | |
3277 | if (getsockname (s, (struct sockaddr *)&sa1, &len1) == 0) | |
3278 | contact = Fplist_put (contact, QClocal, | |
3279 | conv_sockaddr_to_lisp (&sa1, len1)); | |
3280 | } | |
3281 | #endif | |
e690ca94 KS |
3282 | } |
3283 | ||
dd2a17ab | 3284 | #ifdef HAVE_GETADDRINFO |
e690ca94 KS |
3285 | if (res != &ai) |
3286 | freeaddrinfo (res); | |
dd2a17ab KS |
3287 | #endif |
3288 | ||
e690ca94 KS |
3289 | immediate_quit = 0; |
3290 | ||
3291 | /* Discard the unwind protect for closing S, if any. */ | |
3292 | specpdl_ptr = specpdl + count1; | |
3293 | ||
3294 | /* Unwind bind_polling_period and request_sigio. */ | |
3295 | unbind_to (count, Qnil); | |
3296 | ||
dd2a17ab KS |
3297 | if (s < 0) |
3298 | { | |
dd2a17ab KS |
3299 | /* If non-blocking got this far - and failed - assume non-blocking is |
3300 | not supported after all. This is probably a wrong assumption, but | |
e690ca94 KS |
3301 | the normal blocking calls to open-network-stream handles this error |
3302 | better. */ | |
3303 | if (is_non_blocking_client) | |
dd2a17ab | 3304 | return Qnil; |
dd2a17ab | 3305 | |
d0d6b7c5 | 3306 | errno = xerrno; |
e690ca94 KS |
3307 | if (is_server) |
3308 | report_file_error ("make server process failed", contact); | |
3309 | else | |
3310 | report_file_error ("make client process failed", contact); | |
d0d6b7c5 | 3311 | } |
44ade2e9 | 3312 | |
e690ca94 | 3313 | #endif /* not TERM */ |
d0d6b7c5 JB |
3314 | |
3315 | inch = s; | |
59f23005 | 3316 | outch = s; |
d0d6b7c5 JB |
3317 | |
3318 | if (!NILP (buffer)) | |
3319 | buffer = Fget_buffer_create (buffer); | |
3320 | proc = make_process (name); | |
3321 | ||
3322 | chan_process[inch] = proc; | |
3323 | ||
3324 | #ifdef O_NONBLOCK | |
3325 | fcntl (inch, F_SETFL, O_NONBLOCK); | |
3326 | #else | |
3327 | #ifdef O_NDELAY | |
3328 | fcntl (inch, F_SETFL, O_NDELAY); | |
3329 | #endif | |
3330 | #endif | |
3331 | ||
e690ca94 KS |
3332 | p = XPROCESS (proc); |
3333 | ||
3334 | p->childp = contact; | |
faa7db08 | 3335 | p->plist = Fcopy_sequence (Fplist_get (contact, QCplist)); |
177c0ea7 | 3336 | |
e690ca94 KS |
3337 | p->buffer = buffer; |
3338 | p->sentinel = sentinel; | |
3339 | p->filter = filter; | |
03f04413 KH |
3340 | p->filter_multibyte = buffer_defaults.enable_multibyte_characters; |
3341 | /* Override the above only if :filter-multibyte is specified. */ | |
3342 | if (! NILP (Fplist_member (contact, QCfilter_multibyte))) | |
3343 | p->filter_multibyte = Fplist_get (contact, QCfilter_multibyte); | |
e690ca94 KS |
3344 | p->log = Fplist_get (contact, QClog); |
3345 | if (tem = Fplist_get (contact, QCnoquery), !NILP (tem)) | |
3346 | p->kill_without_query = Qt; | |
3347 | if ((tem = Fplist_get (contact, QCstop), !NILP (tem))) | |
3348 | p->command = Qt; | |
3349 | p->pid = Qnil; | |
3350 | XSETINT (p->infd, inch); | |
3351 | XSETINT (p->outfd, outch); | |
3352 | if (is_server && socktype == SOCK_STREAM) | |
3353 | p->status = Qlisten; | |
dd2a17ab KS |
3354 | |
3355 | #ifdef NON_BLOCKING_CONNECT | |
e690ca94 | 3356 | if (is_non_blocking_client) |
dd2a17ab KS |
3357 | { |
3358 | /* We may get here if connect did succeed immediately. However, | |
3359 | in that case, we still need to signal this like a non-blocking | |
3360 | connection. */ | |
e690ca94 | 3361 | p->status = Qconnect; |
dd2a17ab KS |
3362 | if (!FD_ISSET (inch, &connect_wait_mask)) |
3363 | { | |
3364 | FD_SET (inch, &connect_wait_mask); | |
3365 | num_pending_connects++; | |
3366 | } | |
3367 | } | |
3368 | else | |
3369 | #endif | |
e690ca94 KS |
3370 | /* A server may have a client filter setting of Qt, but it must |
3371 | still listen for incoming connects unless it is stopped. */ | |
3372 | if ((!EQ (p->filter, Qt) && !EQ (p->command, Qt)) | |
3373 | || (EQ (p->status, Qlisten) && NILP (p->command))) | |
dd2a17ab KS |
3374 | { |
3375 | FD_SET (inch, &input_wait_mask); | |
3376 | FD_SET (inch, &non_keyboard_wait_mask); | |
3377 | } | |
3378 | ||
7d0e672e RS |
3379 | if (inch > max_process_desc) |
3380 | max_process_desc = inch; | |
d0d6b7c5 | 3381 | |
e690ca94 KS |
3382 | tem = Fplist_member (contact, QCcoding); |
3383 | if (!NILP (tem) && (!CONSP (tem) || !CONSP (XCDR (tem)))) | |
3384 | tem = Qnil; /* No error message (too late!). */ | |
3385 | ||
67918941 RS |
3386 | { |
3387 | /* Setup coding systems for communicating with the network stream. */ | |
3388 | struct gcpro gcpro1; | |
3389 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ | |
3390 | Lisp_Object coding_systems = Qt; | |
3391 | Lisp_Object args[5], val; | |
3392 | ||
e690ca94 | 3393 | if (!NILP (tem)) |
2ccf3102 KS |
3394 | { |
3395 | val = XCAR (XCDR (tem)); | |
3396 | if (CONSP (val)) | |
3397 | val = XCAR (val); | |
3398 | } | |
e690ca94 | 3399 | else if (!NILP (Vcoding_system_for_read)) |
67918941 | 3400 | val = Vcoding_system_for_read; |
41d03b9a GM |
3401 | else if ((!NILP (buffer) && NILP (XBUFFER (buffer)->enable_multibyte_characters)) |
3402 | || (NILP (buffer) && NILP (buffer_defaults.enable_multibyte_characters))) | |
67918941 RS |
3403 | /* We dare not decode end-of-line format by setting VAL to |
3404 | Qraw_text, because the existing Emacs Lisp libraries | |
3405 | assume that they receive bare code including a sequene of | |
3406 | CR LF. */ | |
3407 | val = Qnil; | |
3408 | else | |
3409 | { | |
991234f0 KS |
3410 | if (NILP (host) || NILP (service)) |
3411 | coding_systems = Qnil; | |
3412 | else | |
3413 | { | |
3414 | args[0] = Qopen_network_stream, args[1] = name, | |
3415 | args[2] = buffer, args[3] = host, args[4] = service; | |
3416 | GCPRO1 (proc); | |
3417 | coding_systems = Ffind_operation_coding_system (5, args); | |
3418 | UNGCPRO; | |
3419 | } | |
67918941 | 3420 | if (CONSP (coding_systems)) |
70949dac | 3421 | val = XCAR (coding_systems); |
67918941 | 3422 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3423 | val = XCAR (Vdefault_process_coding_system); |
67918941 RS |
3424 | else |
3425 | val = Qnil; | |
3426 | } | |
e690ca94 | 3427 | p->decode_coding_system = val; |
0fa1789e | 3428 | |
e690ca94 | 3429 | if (!NILP (tem)) |
2ccf3102 KS |
3430 | { |
3431 | val = XCAR (XCDR (tem)); | |
3432 | if (CONSP (val)) | |
3433 | val = XCDR (val); | |
3434 | } | |
e690ca94 | 3435 | else if (!NILP (Vcoding_system_for_write)) |
67918941 RS |
3436 | val = Vcoding_system_for_write; |
3437 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3438 | val = Qnil; | |
3439 | else | |
3440 | { | |
3441 | if (EQ (coding_systems, Qt)) | |
3442 | { | |
991234f0 KS |
3443 | if (NILP (host) || NILP (service)) |
3444 | coding_systems = Qnil; | |
3445 | else | |
3446 | { | |
3447 | args[0] = Qopen_network_stream, args[1] = name, | |
3448 | args[2] = buffer, args[3] = host, args[4] = service; | |
3449 | GCPRO1 (proc); | |
3450 | coding_systems = Ffind_operation_coding_system (5, args); | |
3451 | UNGCPRO; | |
3452 | } | |
67918941 RS |
3453 | } |
3454 | if (CONSP (coding_systems)) | |
70949dac | 3455 | val = XCDR (coding_systems); |
67918941 | 3456 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 3457 | val = XCDR (Vdefault_process_coding_system); |
67918941 RS |
3458 | else |
3459 | val = Qnil; | |
3460 | } | |
e690ca94 | 3461 | p->encode_coding_system = val; |
67918941 | 3462 | } |
03f04413 | 3463 | setup_process_coding_systems (proc); |
0fa1789e | 3464 | |
e690ca94 KS |
3465 | p->decoding_buf = make_uninit_string (0); |
3466 | p->decoding_carryover = make_number (0); | |
3467 | p->encoding_buf = make_uninit_string (0); | |
3468 | p->encoding_carryover = make_number (0); | |
0fa1789e | 3469 | |
e690ca94 KS |
3470 | p->inherit_coding_system_flag |
3471 | = (!NILP (tem) || NILP (buffer) || !inherit_process_coding_system | |
aa91317a | 3472 | ? Qnil : Qt); |
52a1b894 | 3473 | |
d0d6b7c5 JB |
3474 | UNGCPRO; |
3475 | return proc; | |
3476 | } | |
3477 | #endif /* HAVE_SOCKETS */ | |
3478 | ||
161933c7 | 3479 | \f |
b8c7fd71 | 3480 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) |
161933c7 KS |
3481 | |
3482 | #ifdef SIOCGIFCONF | |
3483 | DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0, | |
3484 | doc: /* Return an alist of all network interfaces and their network address. | |
3485 | Each element is a cons, the car of which is a string containing the | |
3486 | interface name, and the cdr is the network address in internal | |
e1283999 | 3487 | format; see the description of ADDRESS in `make-network-process'. */) |
161933c7 KS |
3488 | () |
3489 | { | |
3490 | struct ifconf ifconf; | |
3491 | struct ifreq *ifreqs = NULL; | |
3492 | int ifaces = 0; | |
3493 | int buf_size, s; | |
3494 | Lisp_Object res; | |
3495 | ||
3496 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3497 | if (s < 0) | |
3498 | return Qnil; | |
3499 | ||
3500 | again: | |
3501 | ifaces += 25; | |
3502 | buf_size = ifaces * sizeof(ifreqs[0]); | |
3503 | ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size); | |
3504 | if (!ifreqs) | |
3505 | { | |
3506 | close (s); | |
3507 | return Qnil; | |
3508 | } | |
3509 | ||
3510 | ifconf.ifc_len = buf_size; | |
3511 | ifconf.ifc_req = ifreqs; | |
3512 | if (ioctl (s, SIOCGIFCONF, &ifconf)) | |
3513 | { | |
3514 | close (s); | |
3515 | return Qnil; | |
3516 | } | |
3517 | ||
3518 | if (ifconf.ifc_len == buf_size) | |
3519 | goto again; | |
3520 | ||
3521 | close (s); | |
3522 | ifaces = ifconf.ifc_len / sizeof (ifreqs[0]); | |
3523 | ||
3524 | res = Qnil; | |
3525 | while (--ifaces >= 0) | |
3526 | { | |
3527 | struct ifreq *ifq = &ifreqs[ifaces]; | |
3528 | char namebuf[sizeof (ifq->ifr_name) + 1]; | |
3529 | if (ifq->ifr_addr.sa_family != AF_INET) | |
3530 | continue; | |
3531 | bcopy (ifq->ifr_name, namebuf, sizeof (ifq->ifr_name)); | |
3532 | namebuf[sizeof (ifq->ifr_name)] = 0; | |
3533 | res = Fcons (Fcons (build_string (namebuf), | |
3534 | conv_sockaddr_to_lisp (&ifq->ifr_addr, | |
3535 | sizeof (struct sockaddr))), | |
3536 | res); | |
3537 | } | |
3538 | ||
3539 | return res; | |
3540 | } | |
b8c7fd71 | 3541 | #endif /* SIOCGIFCONF */ |
161933c7 KS |
3542 | |
3543 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
3544 | ||
3545 | struct ifflag_def { | |
3546 | int flag_bit; | |
3547 | char *flag_sym; | |
3548 | }; | |
3549 | ||
3550 | static struct ifflag_def ifflag_table[] = { | |
3551 | #ifdef IFF_UP | |
3552 | { IFF_UP, "up" }, | |
3553 | #endif | |
3554 | #ifdef IFF_BROADCAST | |
3555 | { IFF_BROADCAST, "broadcast" }, | |
3556 | #endif | |
3557 | #ifdef IFF_DEBUG | |
3558 | { IFF_DEBUG, "debug" }, | |
3559 | #endif | |
3560 | #ifdef IFF_LOOPBACK | |
3561 | { IFF_LOOPBACK, "loopback" }, | |
3562 | #endif | |
3563 | #ifdef IFF_POINTOPOINT | |
3564 | { IFF_POINTOPOINT, "pointopoint" }, | |
3565 | #endif | |
3566 | #ifdef IFF_RUNNING | |
3567 | { IFF_RUNNING, "running" }, | |
3568 | #endif | |
3569 | #ifdef IFF_NOARP | |
3570 | { IFF_NOARP, "noarp" }, | |
3571 | #endif | |
3572 | #ifdef IFF_PROMISC | |
3573 | { IFF_PROMISC, "promisc" }, | |
3574 | #endif | |
3575 | #ifdef IFF_NOTRAILERS | |
3576 | { IFF_NOTRAILERS, "notrailers" }, | |
3577 | #endif | |
3578 | #ifdef IFF_ALLMULTI | |
3579 | { IFF_ALLMULTI, "allmulti" }, | |
3580 | #endif | |
3581 | #ifdef IFF_MASTER | |
3582 | { IFF_MASTER, "master" }, | |
3583 | #endif | |
3584 | #ifdef IFF_SLAVE | |
3585 | { IFF_SLAVE, "slave" }, | |
3586 | #endif | |
3587 | #ifdef IFF_MULTICAST | |
3588 | { IFF_MULTICAST, "multicast" }, | |
3589 | #endif | |
3590 | #ifdef IFF_PORTSEL | |
3591 | { IFF_PORTSEL, "portsel" }, | |
3592 | #endif | |
3593 | #ifdef IFF_AUTOMEDIA | |
3594 | { IFF_AUTOMEDIA, "automedia" }, | |
3595 | #endif | |
3596 | #ifdef IFF_DYNAMIC | |
3597 | { IFF_DYNAMIC, "dynamic" }, | |
e1652a86 KS |
3598 | #endif |
3599 | #ifdef IFF_OACTIV | |
3600 | { IFF_OACTIV, "oactiv" }, /* OpenBSD: transmission in progress */ | |
3601 | #endif | |
3602 | #ifdef IFF_SIMPLEX | |
3603 | { IFF_SIMPLEX, "simplex" }, /* OpenBSD: can't hear own transmissions */ | |
3604 | #endif | |
3605 | #ifdef IFF_LINK0 | |
3606 | { IFF_LINK0, "link0" }, /* OpenBSD: per link layer defined bit */ | |
3607 | #endif | |
3608 | #ifdef IFF_LINK1 | |
3609 | { IFF_LINK1, "link1" }, /* OpenBSD: per link layer defined bit */ | |
3610 | #endif | |
3611 | #ifdef IFF_LINK2 | |
3612 | { IFF_LINK2, "link2" }, /* OpenBSD: per link layer defined bit */ | |
161933c7 KS |
3613 | #endif |
3614 | { 0, 0 } | |
3615 | }; | |
3616 | ||
2ccf3102 | 3617 | DEFUN ("network-interface-info", Fnetwork_interface_info, Snetwork_interface_info, 1, 1, 0, |
161933c7 KS |
3618 | doc: /* Return information about network interface named IFNAME. |
3619 | The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS), | |
3620 | where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address, | |
3621 | NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and | |
3622 | FLAGS is the current flags of the interface. */) | |
3623 | (ifname) | |
3624 | Lisp_Object ifname; | |
3625 | { | |
3626 | struct ifreq rq; | |
3627 | Lisp_Object res = Qnil; | |
3628 | Lisp_Object elt; | |
3629 | int s; | |
3630 | int any = 0; | |
3631 | ||
3632 | CHECK_STRING (ifname); | |
3633 | ||
3634 | bzero (rq.ifr_name, sizeof rq.ifr_name); | |
3635 | strncpy (rq.ifr_name, SDATA (ifname), sizeof (rq.ifr_name)); | |
3636 | ||
3637 | s = socket (AF_INET, SOCK_STREAM, 0); | |
3638 | if (s < 0) | |
3639 | return Qnil; | |
3640 | ||
3641 | elt = Qnil; | |
559c53b3 | 3642 | #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS) |
161933c7 KS |
3643 | if (ioctl (s, SIOCGIFFLAGS, &rq) == 0) |
3644 | { | |
3645 | int flags = rq.ifr_flags; | |
3646 | struct ifflag_def *fp; | |
3647 | int fnum; | |
3648 | ||
3649 | any++; | |
82a80058 | 3650 | for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++) |
161933c7 KS |
3651 | { |
3652 | if (flags & fp->flag_bit) | |
3653 | { | |
3654 | elt = Fcons (intern (fp->flag_sym), elt); | |
3655 | flags -= fp->flag_bit; | |
3656 | } | |
3657 | } | |
3658 | for (fnum = 0; flags && fnum < 32; fnum++) | |
3659 | { | |
3660 | if (flags & (1 << fnum)) | |
3661 | { | |
3662 | elt = Fcons (make_number (fnum), elt); | |
3663 | } | |
3664 | } | |
3665 | } | |
3666 | #endif | |
3667 | res = Fcons (elt, res); | |
3668 | ||
3669 | elt = Qnil; | |
559c53b3 | 3670 | #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR) |
161933c7 KS |
3671 | if (ioctl (s, SIOCGIFHWADDR, &rq) == 0) |
3672 | { | |
b8c7fd71 | 3673 | Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil); |
161933c7 KS |
3674 | register struct Lisp_Vector *p = XVECTOR (hwaddr); |
3675 | int n; | |
3676 | ||
3677 | any++; | |
3678 | for (n = 0; n < 6; n++) | |
3679 | p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]); | |
e1283999 | 3680 | elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr); |
161933c7 KS |
3681 | } |
3682 | #endif | |
3683 | res = Fcons (elt, res); | |
3684 | ||
3685 | elt = Qnil; | |
b8c7fd71 | 3686 | #if defined(SIOCGIFNETMASK) && defined(ifr_netmask) |
161933c7 KS |
3687 | if (ioctl (s, SIOCGIFNETMASK, &rq) == 0) |
3688 | { | |
3689 | any++; | |
3690 | elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask)); | |
3691 | } | |
3692 | #endif | |
3693 | res = Fcons (elt, res); | |
3694 | ||
3695 | elt = Qnil; | |
559c53b3 | 3696 | #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR) |
161933c7 KS |
3697 | if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0) |
3698 | { | |
3699 | any++; | |
3700 | elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr)); | |
3701 | } | |
3702 | #endif | |
3703 | res = Fcons (elt, res); | |
3704 | ||
3705 | elt = Qnil; | |
559c53b3 | 3706 | #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR) |
161933c7 KS |
3707 | if (ioctl (s, SIOCGIFADDR, &rq) == 0) |
3708 | { | |
3709 | any++; | |
3710 | elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr)); | |
3711 | } | |
3712 | #endif | |
3713 | res = Fcons (elt, res); | |
3714 | ||
3715 | close (s); | |
3716 | ||
3717 | return any ? res : Qnil; | |
3718 | } | |
3719 | #endif | |
3720 | #endif /* HAVE_SOCKETS */ | |
3721 | ||
04391069 RS |
3722 | /* Turn off input and output for process PROC. */ |
3723 | ||
6b53bb85 | 3724 | void |
d0d6b7c5 JB |
3725 | deactivate_process (proc) |
3726 | Lisp_Object proc; | |
3727 | { | |
3728 | register int inchannel, outchannel; | |
3729 | register struct Lisp_Process *p = XPROCESS (proc); | |
3730 | ||
a9f2c884 RS |
3731 | inchannel = XINT (p->infd); |
3732 | outchannel = XINT (p->outfd); | |
d0d6b7c5 | 3733 | |
2d942bfa KS |
3734 | #ifdef ADAPTIVE_READ_BUFFERING |
3735 | if (XINT (p->read_output_delay) > 0) | |
3736 | { | |
3737 | if (--process_output_delay_count < 0) | |
3738 | process_output_delay_count = 0; | |
3739 | XSETINT (p->read_output_delay, 0); | |
3740 | p->read_output_skip = Qnil; | |
3741 | } | |
3742 | #endif | |
f3d9532b | 3743 | |
a9f2c884 | 3744 | if (inchannel >= 0) |
d0d6b7c5 JB |
3745 | { |
3746 | /* Beware SIGCHLD hereabouts. */ | |
3747 | flush_pending_output (inchannel); | |
3748 | #ifdef VMS | |
3749 | { | |
3750 | VMS_PROC_STUFF *get_vms_process_pointer (), *vs; | |
3751 | sys$dassgn (outchannel); | |
c6c6865d | 3752 | vs = get_vms_process_pointer (p->pid); |
d0d6b7c5 JB |
3753 | if (vs) |
3754 | give_back_vms_process_stuff (vs); | |
3755 | } | |
3756 | #else | |
68c45bf0 | 3757 | emacs_close (inchannel); |
a9f2c884 | 3758 | if (outchannel >= 0 && outchannel != inchannel) |
68c45bf0 | 3759 | emacs_close (outchannel); |
d0d6b7c5 JB |
3760 | #endif |
3761 | ||
1d056e64 KH |
3762 | XSETINT (p->infd, -1); |
3763 | XSETINT (p->outfd, -1); | |
e690ca94 KS |
3764 | #ifdef DATAGRAM_SOCKETS |
3765 | if (DATAGRAM_CHAN_P (inchannel)) | |
3766 | { | |
3767 | xfree (datagram_address[inchannel].sa); | |
3768 | datagram_address[inchannel].sa = 0; | |
3769 | datagram_address[inchannel].len = 0; | |
3770 | } | |
3771 | #endif | |
d0d6b7c5 JB |
3772 | chan_process[inchannel] = Qnil; |
3773 | FD_CLR (inchannel, &input_wait_mask); | |
a69281ff | 3774 | FD_CLR (inchannel, &non_keyboard_wait_mask); |
bad49fc7 | 3775 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
3776 | if (FD_ISSET (inchannel, &connect_wait_mask)) |
3777 | { | |
3778 | FD_CLR (inchannel, &connect_wait_mask); | |
3779 | if (--num_pending_connects < 0) | |
3780 | abort (); | |
3781 | } | |
bad49fc7 | 3782 | #endif |
7d0e672e RS |
3783 | if (inchannel == max_process_desc) |
3784 | { | |
3785 | int i; | |
3786 | /* We just closed the highest-numbered process input descriptor, | |
3787 | so recompute the highest-numbered one now. */ | |
3788 | max_process_desc = 0; | |
3789 | for (i = 0; i < MAXDESC; i++) | |
3790 | if (!NILP (chan_process[i])) | |
3791 | max_process_desc = i; | |
3792 | } | |
d0d6b7c5 JB |
3793 | } |
3794 | } | |
3795 | ||
3796 | /* Close all descriptors currently in use for communication | |
3797 | with subprocess. This is used in a newly-forked subprocess | |
3798 | to get rid of irrelevant descriptors. */ | |
3799 | ||
6b53bb85 | 3800 | void |
d0d6b7c5 JB |
3801 | close_process_descs () |
3802 | { | |
e98d950b | 3803 | #ifndef WINDOWSNT |
d0d6b7c5 JB |
3804 | int i; |
3805 | for (i = 0; i < MAXDESC; i++) | |
3806 | { | |
3807 | Lisp_Object process; | |
3808 | process = chan_process[i]; | |
3809 | if (!NILP (process)) | |
3810 | { | |
a9f2c884 RS |
3811 | int in = XINT (XPROCESS (process)->infd); |
3812 | int out = XINT (XPROCESS (process)->outfd); | |
3813 | if (in >= 0) | |
68c45bf0 | 3814 | emacs_close (in); |
a9f2c884 | 3815 | if (out >= 0 && in != out) |
68c45bf0 | 3816 | emacs_close (out); |
d0d6b7c5 JB |
3817 | } |
3818 | } | |
e98d950b | 3819 | #endif |
d0d6b7c5 JB |
3820 | } |
3821 | \f | |
3822 | DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output, | |
107ed38d | 3823 | 0, 4, 0, |
fdb82f93 PJ |
3824 | doc: /* Allow any pending output from subprocesses to be read by Emacs. |
3825 | It is read into the process' buffers or given to their filter functions. | |
3826 | Non-nil arg PROCESS means do not return until some output has been received | |
3827 | from PROCESS. | |
3828 | Non-nil second arg TIMEOUT and third arg TIMEOUT-MSECS are number of | |
3829 | seconds and microseconds to wait; return after that much time whether | |
3830 | or not there is input. | |
107ed38d KS |
3831 | If optional fourth arg JUST-THIS-ONE is non-nil, only accept output |
3832 | from PROCESS, suspending reading output from other processes. | |
3833 | If JUST-THIS-ONE is an integer, don't run any timers either. | |
fdb82f93 | 3834 | Return non-nil iff we received any output before the timeout expired. */) |
107ed38d KS |
3835 | (process, timeout, timeout_msecs, just_this_one) |
3836 | register Lisp_Object process, timeout, timeout_msecs, just_this_one; | |
d0d6b7c5 JB |
3837 | { |
3838 | int seconds; | |
3839 | int useconds; | |
3840 | ||
0748d150 | 3841 | if (! NILP (process)) |
b7826503 | 3842 | CHECK_PROCESS (process); |
107ed38d KS |
3843 | else |
3844 | just_this_one = Qnil; | |
0748d150 | 3845 | |
d0d6b7c5 JB |
3846 | if (! NILP (timeout_msecs)) |
3847 | { | |
b7826503 | 3848 | CHECK_NUMBER (timeout_msecs); |
d0d6b7c5 | 3849 | useconds = XINT (timeout_msecs); |
bcd69aea | 3850 | if (!INTEGERP (timeout)) |
1d056e64 | 3851 | XSETINT (timeout, 0); |
d0d6b7c5 JB |
3852 | |
3853 | { | |
3854 | int carry = useconds / 1000000; | |
3855 | ||
3856 | XSETINT (timeout, XINT (timeout) + carry); | |
3857 | useconds -= carry * 1000000; | |
3858 | ||
3859 | /* I think this clause is necessary because C doesn't | |
3860 | guarantee a particular rounding direction for negative | |
3861 | integers. */ | |
3862 | if (useconds < 0) | |
3863 | { | |
3864 | XSETINT (timeout, XINT (timeout) - 1); | |
3865 | useconds += 1000000; | |
3866 | } | |
3867 | } | |
3868 | } | |
de946e5a RS |
3869 | else |
3870 | useconds = 0; | |
d0d6b7c5 JB |
3871 | |
3872 | if (! NILP (timeout)) | |
3873 | { | |
b7826503 | 3874 | CHECK_NUMBER (timeout); |
d0d6b7c5 | 3875 | seconds = XINT (timeout); |
ada9a4fd | 3876 | if (seconds < 0 || (seconds == 0 && useconds == 0)) |
d0d6b7c5 JB |
3877 | seconds = -1; |
3878 | } | |
3879 | else | |
26d7389d | 3880 | seconds = NILP (process) ? -1 : 0; |
d0d6b7c5 JB |
3881 | |
3882 | return | |
214d6069 KS |
3883 | (wait_reading_process_output (seconds, useconds, 0, 0, |
3884 | Qnil, | |
3885 | !NILP (process) ? XPROCESS (process) : NULL, | |
3886 | NILP (just_this_one) ? 0 : | |
3887 | !INTEGERP (just_this_one) ? 1 : -1) | |
d0d6b7c5 JB |
3888 | ? Qt : Qnil); |
3889 | } | |
3890 | ||
e690ca94 KS |
3891 | /* Accept a connection for server process SERVER on CHANNEL. */ |
3892 | ||
3893 | static int connect_counter = 0; | |
3894 | ||
3895 | static void | |
3896 | server_accept_connection (server, channel) | |
3897 | Lisp_Object server; | |
3898 | int channel; | |
3899 | { | |
3900 | Lisp_Object proc, caller, name, buffer; | |
3901 | Lisp_Object contact, host, service; | |
3902 | struct Lisp_Process *ps= XPROCESS (server); | |
3903 | struct Lisp_Process *p; | |
3904 | int s; | |
3905 | union u_sockaddr { | |
3906 | struct sockaddr sa; | |
3907 | struct sockaddr_in in; | |
e1652a86 KS |
3908 | #ifdef AF_INET6 |
3909 | struct sockaddr_in6 in6; | |
3910 | #endif | |
e690ca94 KS |
3911 | #ifdef HAVE_LOCAL_SOCKETS |
3912 | struct sockaddr_un un; | |
3913 | #endif | |
3914 | } saddr; | |
3915 | int len = sizeof saddr; | |
3916 | ||
3917 | s = accept (channel, &saddr.sa, &len); | |
3918 | ||
3919 | if (s < 0) | |
3920 | { | |
3921 | int code = errno; | |
3922 | ||
3923 | if (code == EAGAIN) | |
3924 | return; | |
3925 | #ifdef EWOULDBLOCK | |
3926 | if (code == EWOULDBLOCK) | |
3927 | return; | |
3928 | #endif | |
3929 | ||
3930 | if (!NILP (ps->log)) | |
3931 | call3 (ps->log, server, Qnil, | |
3932 | concat3 (build_string ("accept failed with code"), | |
3933 | Fnumber_to_string (make_number (code)), | |
3934 | build_string ("\n"))); | |
3935 | return; | |
3936 | } | |
3937 | ||
3938 | connect_counter++; | |
3939 | ||
3940 | /* Setup a new process to handle the connection. */ | |
3941 | ||
3942 | /* Generate a unique identification of the caller, and build contact | |
3943 | information for this process. */ | |
3944 | host = Qt; | |
3945 | service = Qnil; | |
3946 | switch (saddr.sa.sa_family) | |
3947 | { | |
3948 | case AF_INET: | |
3949 | { | |
3950 | Lisp_Object args[5]; | |
3951 | unsigned char *ip = (unsigned char *)&saddr.in.sin_addr.s_addr; | |
3952 | args[0] = build_string ("%d.%d.%d.%d"); | |
3953 | args[1] = make_number (*ip++); | |
3954 | args[2] = make_number (*ip++); | |
3955 | args[3] = make_number (*ip++); | |
3956 | args[4] = make_number (*ip++); | |
3957 | host = Fformat (5, args); | |
3958 | service = make_number (ntohs (saddr.in.sin_port)); | |
3959 | ||
3960 | args[0] = build_string (" <%s:%d>"); | |
3961 | args[1] = host; | |
3962 | args[2] = service; | |
3963 | caller = Fformat (3, args); | |
3964 | } | |
3965 | break; | |
3966 | ||
e1652a86 KS |
3967 | #ifdef AF_INET6 |
3968 | case AF_INET6: | |
3969 | { | |
3970 | Lisp_Object args[9]; | |
3971 | uint16_t *ip6 = (uint16_t *)&saddr.in6.sin6_addr; | |
3972 | int i; | |
3973 | args[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x"); | |
3974 | for (i = 0; i < 8; i++) | |
3975 | args[i+1] = make_number (ntohs(ip6[i])); | |
3976 | host = Fformat (9, args); | |
3977 | service = make_number (ntohs (saddr.in.sin_port)); | |
3978 | ||
3979 | args[0] = build_string (" <[%s]:%d>"); | |
3980 | args[1] = host; | |
3981 | args[2] = service; | |
3982 | caller = Fformat (3, args); | |
3983 | } | |
3984 | break; | |
3985 | #endif | |
3986 | ||
e690ca94 KS |
3987 | #ifdef HAVE_LOCAL_SOCKETS |
3988 | case AF_LOCAL: | |
3989 | #endif | |
3990 | default: | |
3991 | caller = Fnumber_to_string (make_number (connect_counter)); | |
3992 | caller = concat3 (build_string (" <*"), caller, build_string ("*>")); | |
3993 | break; | |
3994 | } | |
3995 | ||
3996 | /* Create a new buffer name for this process if it doesn't have a | |
3997 | filter. The new buffer name is based on the buffer name or | |
3998 | process name of the server process concatenated with the caller | |
3999 | identification. */ | |
4000 | ||
4001 | if (!NILP (ps->filter) && !EQ (ps->filter, Qt)) | |
4002 | buffer = Qnil; | |
4003 | else | |
4004 | { | |
4005 | buffer = ps->buffer; | |
4006 | if (!NILP (buffer)) | |
4007 | buffer = Fbuffer_name (buffer); | |
4008 | else | |
4009 | buffer = ps->name; | |
4010 | if (!NILP (buffer)) | |
4011 | { | |
4012 | buffer = concat2 (buffer, caller); | |
4013 | buffer = Fget_buffer_create (buffer); | |
4014 | } | |
4015 | } | |
4016 | ||
4017 | /* Generate a unique name for the new server process. Combine the | |
4018 | server process name with the caller identification. */ | |
4019 | ||
4020 | name = concat2 (ps->name, caller); | |
4021 | proc = make_process (name); | |
4022 | ||
4023 | chan_process[s] = proc; | |
4024 | ||
4025 | #ifdef O_NONBLOCK | |
4026 | fcntl (s, F_SETFL, O_NONBLOCK); | |
4027 | #else | |
4028 | #ifdef O_NDELAY | |
4029 | fcntl (s, F_SETFL, O_NDELAY); | |
4030 | #endif | |
4031 | #endif | |
4032 | ||
4033 | p = XPROCESS (proc); | |
4034 | ||
4035 | /* Build new contact information for this setup. */ | |
4036 | contact = Fcopy_sequence (ps->childp); | |
4037 | contact = Fplist_put (contact, QCserver, Qnil); | |
4038 | contact = Fplist_put (contact, QChost, host); | |
4039 | if (!NILP (service)) | |
4040 | contact = Fplist_put (contact, QCservice, service); | |
177c0ea7 | 4041 | contact = Fplist_put (contact, QCremote, |
e690ca94 KS |
4042 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4043 | #ifdef HAVE_GETSOCKNAME | |
4044 | len = sizeof saddr; | |
2185db04 | 4045 | if (getsockname (s, &saddr.sa, &len) == 0) |
177c0ea7 | 4046 | contact = Fplist_put (contact, QClocal, |
e690ca94 KS |
4047 | conv_sockaddr_to_lisp (&saddr.sa, len)); |
4048 | #endif | |
4049 | ||
4050 | p->childp = contact; | |
faa7db08 | 4051 | p->plist = Fcopy_sequence (ps->plist); |
ac4a7584 | 4052 | |
e690ca94 KS |
4053 | p->buffer = buffer; |
4054 | p->sentinel = ps->sentinel; | |
4055 | p->filter = ps->filter; | |
4056 | p->command = Qnil; | |
4057 | p->pid = Qnil; | |
4058 | XSETINT (p->infd, s); | |
4059 | XSETINT (p->outfd, s); | |
4060 | p->status = Qrun; | |
4061 | ||
4062 | /* Client processes for accepted connections are not stopped initially. */ | |
4063 | if (!EQ (p->filter, Qt)) | |
4064 | { | |
4065 | FD_SET (s, &input_wait_mask); | |
4066 | FD_SET (s, &non_keyboard_wait_mask); | |
4067 | } | |
4068 | ||
4069 | if (s > max_process_desc) | |
4070 | max_process_desc = s; | |
4071 | ||
177c0ea7 | 4072 | /* Setup coding system for new process based on server process. |
e690ca94 KS |
4073 | This seems to be the proper thing to do, as the coding system |
4074 | of the new process should reflect the settings at the time the | |
4075 | server socket was opened; not the current settings. */ | |
4076 | ||
4077 | p->decode_coding_system = ps->decode_coding_system; | |
4078 | p->encode_coding_system = ps->encode_coding_system; | |
03f04413 | 4079 | setup_process_coding_systems (proc); |
e690ca94 KS |
4080 | |
4081 | p->decoding_buf = make_uninit_string (0); | |
4082 | p->decoding_carryover = make_number (0); | |
4083 | p->encoding_buf = make_uninit_string (0); | |
4084 | p->encoding_carryover = make_number (0); | |
4085 | ||
4086 | p->inherit_coding_system_flag | |
4087 | = (NILP (buffer) ? Qnil : ps->inherit_coding_system_flag); | |
4088 | ||
4089 | if (!NILP (ps->log)) | |
4090 | call3 (ps->log, server, proc, | |
4091 | concat3 (build_string ("accept from "), | |
4092 | (STRINGP (host) ? host : build_string ("-")), | |
4093 | build_string ("\n"))); | |
4094 | ||
bed9664a | 4095 | if (!NILP (p->sentinel)) |
177c0ea7 | 4096 | exec_sentinel (proc, |
e690ca94 KS |
4097 | concat3 (build_string ("open from "), |
4098 | (STRINGP (host) ? host : build_string ("-")), | |
4099 | build_string ("\n"))); | |
4100 | } | |
4101 | ||
d0d6b7c5 JB |
4102 | /* This variable is different from waiting_for_input in keyboard.c. |
4103 | It is used to communicate to a lisp process-filter/sentinel (via the | |
f3d9532b | 4104 | function Fwaiting_for_user_input_p below) whether Emacs was waiting |
d0d6b7c5 JB |
4105 | for user-input when that process-filter was called. |
4106 | waiting_for_input cannot be used as that is by definition 0 when | |
d430ee71 RS |
4107 | lisp code is being evalled. |
4108 | This is also used in record_asynch_buffer_change. | |
4109 | For that purpose, this must be 0 | |
214d6069 | 4110 | when not inside wait_reading_process_output. */ |
d0d6b7c5 JB |
4111 | static int waiting_for_user_input_p; |
4112 | ||
c573ae8e | 4113 | /* This is here so breakpoints can be put on it. */ |
dfcf069d | 4114 | static void |
214d6069 | 4115 | wait_reading_process_output_1 () |
c573ae8e RS |
4116 | { |
4117 | } | |
4118 | ||
d0d6b7c5 JB |
4119 | /* Read and dispose of subprocess output while waiting for timeout to |
4120 | elapse and/or keyboard input to be available. | |
4121 | ||
de6fd4b9 | 4122 | TIME_LIMIT is: |
d0d6b7c5 JB |
4123 | timeout in seconds, or |
4124 | zero for no limit, or | |
4125 | -1 means gobble data immediately available but don't wait for any. | |
4126 | ||
de6fd4b9 RS |
4127 | MICROSECS is: |
4128 | an additional duration to wait, measured in microseconds. | |
4129 | If this is nonzero and time_limit is 0, then the timeout | |
4130 | consists of MICROSECS only. | |
6e4f3667 | 4131 | |
de6fd4b9 | 4132 | READ_KBD is a lisp value: |
d0d6b7c5 JB |
4133 | 0 to ignore keyboard input, or |
4134 | 1 to return when input is available, or | |
84aa3ace | 4135 | -1 meaning caller will actually read the input, so don't throw to |
d0d6b7c5 | 4136 | the quit handler, or |
b89a415a KS |
4137 | |
4138 | DO_DISPLAY != 0 means redisplay should be done to show subprocess | |
107ed38d | 4139 | output that arrives. |
d0d6b7c5 | 4140 | |
b89a415a KS |
4141 | If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil |
4142 | (and gobble terminal input into the buffer if any arrives). | |
4143 | ||
4144 | If WAIT_PROC is specified, wait until something arrives from that | |
4145 | process. The return value is true iff we read some input from | |
4146 | that process. | |
4147 | ||
4148 | If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC | |
4149 | (suspending output from other processes). A negative value | |
4150 | means don't run any timers either. | |
4151 | ||
4152 | If WAIT_PROC is specified, then the function returns true iff we | |
4153 | received input from that process before the timeout elapsed. | |
eb8c3be9 | 4154 | Otherwise, return true iff we received input from any process. */ |
d0d6b7c5 | 4155 | |
dfcf069d | 4156 | int |
214d6069 KS |
4157 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
4158 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
4159 | int time_limit, microsecs, read_kbd, do_display; |
4160 | Lisp_Object wait_for_cell; | |
4161 | struct Lisp_Process *wait_proc; | |
4162 | int just_wait_proc; | |
d0d6b7c5 | 4163 | { |
41d03b9a | 4164 | register int channel, nfds; |
855448dc | 4165 | SELECT_TYPE Available; |
bad49fc7 | 4166 | #ifdef NON_BLOCKING_CONNECT |
855448dc | 4167 | SELECT_TYPE Connecting; |
bad49fc7 KS |
4168 | int check_connect; |
4169 | #endif | |
4170 | int check_delay, no_avail; | |
d0d6b7c5 JB |
4171 | int xerrno; |
4172 | Lisp_Object proc; | |
41d03b9a | 4173 | EMACS_TIME timeout, end_time; |
a9f2c884 | 4174 | int wait_channel = -1; |
d0d6b7c5 | 4175 | int got_some_input = 0; |
f3fbd155 KR |
4176 | /* Either nil or a cons cell, the car of which is of interest and |
4177 | may be changed outside of this routine. */ | |
855448dc | 4178 | int saved_waiting_for_user_input_p = waiting_for_user_input_p; |
d0d6b7c5 JB |
4179 | |
4180 | FD_ZERO (&Available); | |
bad49fc7 | 4181 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4182 | FD_ZERO (&Connecting); |
bad49fc7 | 4183 | #endif |
d0d6b7c5 | 4184 | |
b89a415a KS |
4185 | /* If wait_proc is a process to watch, set wait_channel accordingly. */ |
4186 | if (wait_proc != NULL) | |
4187 | wait_channel = XINT (wait_proc->infd); | |
d0d6b7c5 | 4188 | |
b89a415a | 4189 | waiting_for_user_input_p = read_kbd; |
d0d6b7c5 JB |
4190 | |
4191 | /* Since we may need to wait several times, | |
4192 | compute the absolute time to return at. */ | |
4193 | if (time_limit || microsecs) | |
4194 | { | |
4195 | EMACS_GET_TIME (end_time); | |
4196 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); | |
4197 | EMACS_ADD_TIME (end_time, end_time, timeout); | |
4198 | } | |
19310311 | 4199 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4200 | /* AlainF 5-Jul-1996 |
4201 | HP-UX 10.10 seem to have problems with signals coming in | |
4202 | Causes "poll: interrupted system call" messages when Emacs is run | |
4203 | in an X window | |
75eb23f1 RS |
4204 | Turn off periodic alarms (in case they are in use), |
4205 | and then turn off any other atimers. */ | |
4206 | stop_polling (); | |
30904ab7 | 4207 | turn_on_atimers (0); |
19310311 | 4208 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
d0d6b7c5 | 4209 | |
d0d6b7c5 JB |
4210 | while (1) |
4211 | { | |
c0239a0b RS |
4212 | int timeout_reduced_for_timers = 0; |
4213 | ||
d0d6b7c5 JB |
4214 | /* If calling from keyboard input, do not quit |
4215 | since we want to return C-g as an input character. | |
4216 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4217 | if (read_kbd >= 0) |
d0d6b7c5 | 4218 | QUIT; |
43ff45a0 SM |
4219 | #ifdef SYNC_INPUT |
4220 | else if (interrupt_input_pending) | |
4221 | handle_async_input (); | |
4222 | #endif | |
d0d6b7c5 | 4223 | |
889255b4 | 4224 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4225 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
889255b4 RS |
4226 | break; |
4227 | ||
d0d6b7c5 JB |
4228 | /* Compute time from now till when time limit is up */ |
4229 | /* Exit if already run out */ | |
4230 | if (time_limit == -1) | |
4231 | { | |
4232 | /* -1 specified for timeout means | |
4233 | gobble output available now | |
4234 | but don't wait at all. */ | |
4235 | ||
4236 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
4237 | } | |
4238 | else if (time_limit || microsecs) | |
4239 | { | |
4240 | EMACS_GET_TIME (timeout); | |
4241 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
4242 | if (EMACS_TIME_NEG_P (timeout)) | |
4243 | break; | |
4244 | } | |
4245 | else | |
4246 | { | |
4247 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
4248 | } | |
4249 | ||
f854a00b RS |
4250 | /* Normally we run timers here. |
4251 | But not if wait_for_cell; in those cases, | |
4252 | the wait is supposed to be short, | |
4253 | and those callers cannot handle running arbitrary Lisp code here. */ | |
107ed38d | 4254 | if (NILP (wait_for_cell) |
b89a415a | 4255 | && just_wait_proc >= 0) |
fb4c3627 | 4256 | { |
c0239a0b | 4257 | EMACS_TIME timer_delay; |
c573ae8e | 4258 | |
9baacf76 | 4259 | do |
c573ae8e | 4260 | { |
9baacf76 | 4261 | int old_timers_run = timers_run; |
c88164fe | 4262 | struct buffer *old_buffer = current_buffer; |
177c0ea7 | 4263 | |
9baacf76 | 4264 | timer_delay = timer_check (1); |
a2fab450 GM |
4265 | |
4266 | /* If a timer has run, this might have changed buffers | |
4267 | an alike. Make read_key_sequence aware of that. */ | |
4268 | if (timers_run != old_timers_run | |
c88164fe | 4269 | && old_buffer != current_buffer |
a2fab450 GM |
4270 | && waiting_for_user_input_p == -1) |
4271 | record_asynch_buffer_change (); | |
177c0ea7 | 4272 | |
9baacf76 GM |
4273 | if (timers_run != old_timers_run && do_display) |
4274 | /* We must retry, since a timer may have requeued itself | |
4275 | and that could alter the time_delay. */ | |
3007ebfb | 4276 | redisplay_preserve_echo_area (9); |
9baacf76 GM |
4277 | else |
4278 | break; | |
c573ae8e | 4279 | } |
9baacf76 | 4280 | while (!detect_input_pending ()); |
c573ae8e | 4281 | |
69645afc | 4282 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4283 | if (read_kbd != 0 |
69645afc RS |
4284 | && requeued_events_pending_p ()) |
4285 | break; | |
4286 | ||
c0239a0b | 4287 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
fb4c3627 RS |
4288 | { |
4289 | EMACS_TIME difference; | |
4290 | EMACS_SUB_TIME (difference, timer_delay, timeout); | |
4291 | if (EMACS_TIME_NEG_P (difference)) | |
c0239a0b RS |
4292 | { |
4293 | timeout = timer_delay; | |
4294 | timeout_reduced_for_timers = 1; | |
4295 | } | |
fb4c3627 | 4296 | } |
4abca5e7 RS |
4297 | /* If time_limit is -1, we are not going to wait at all. */ |
4298 | else if (time_limit != -1) | |
c573ae8e RS |
4299 | { |
4300 | /* This is so a breakpoint can be put here. */ | |
214d6069 | 4301 | wait_reading_process_output_1 (); |
c573ae8e | 4302 | } |
fb4c3627 RS |
4303 | } |
4304 | ||
90ab1a81 JB |
4305 | /* Cause C-g and alarm signals to take immediate action, |
4306 | and cause input available signals to zero out timeout. | |
4307 | ||
4308 | It is important that we do this before checking for process | |
4309 | activity. If we get a SIGCHLD after the explicit checks for | |
4310 | process activity, timeout is the only way we will know. */ | |
b89a415a | 4311 | if (read_kbd < 0) |
90ab1a81 JB |
4312 | set_waiting_for_input (&timeout); |
4313 | ||
6be429b1 JB |
4314 | /* If status of something has changed, and no input is |
4315 | available, notify the user of the change right away. After | |
4316 | this explicit check, we'll let the SIGCHLD handler zap | |
4317 | timeout to get our attention. */ | |
4318 | if (update_tick != process_tick && do_display) | |
4319 | { | |
bad49fc7 KS |
4320 | SELECT_TYPE Atemp; |
4321 | #ifdef NON_BLOCKING_CONNECT | |
4322 | SELECT_TYPE Ctemp; | |
4323 | #endif | |
dd2a17ab | 4324 | |
6be429b1 | 4325 | Atemp = input_wait_mask; |
e082ac9d ST |
4326 | #if 0 |
4327 | /* On Mac OS X 10.0, the SELECT system call always says input is | |
e0f712ba | 4328 | present (for reading) at stdin, even when none is. This |
aa87aafc | 4329 | causes the call to SELECT below to return 1 and |
e0f712ba | 4330 | status_notify not to be called. As a result output of |
39b1da20 | 4331 | subprocesses are incorrectly discarded. |
e082ac9d | 4332 | */ |
e0f712ba AC |
4333 | FD_CLR (0, &Atemp); |
4334 | #endif | |
bad49fc7 KS |
4335 | IF_NON_BLOCKING_CONNECT (Ctemp = connect_wait_mask); |
4336 | ||
6be429b1 | 4337 | EMACS_SET_SECS_USECS (timeout, 0, 0); |
0c9960e9 | 4338 | if ((select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4339 | &Atemp, |
bad49fc7 | 4340 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4341 | (num_pending_connects > 0 ? &Ctemp : (SELECT_TYPE *)0), |
bad49fc7 KS |
4342 | #else |
4343 | (SELECT_TYPE *)0, | |
4344 | #endif | |
dd2a17ab | 4345 | (SELECT_TYPE *)0, &timeout) |
ecd1f654 | 4346 | <= 0)) |
90ab1a81 JB |
4347 | { |
4348 | /* It's okay for us to do this and then continue with | |
a0e4d3f3 | 4349 | the loop, since timeout has already been zeroed out. */ |
90ab1a81 | 4350 | clear_waiting_for_input (); |
ff6daed3 | 4351 | status_notify (NULL); |
90ab1a81 | 4352 | } |
6be429b1 JB |
4353 | } |
4354 | ||
dd2a17ab KS |
4355 | /* Don't wait for output from a non-running process. Just |
4356 | read whatever data has already been received. */ | |
6be429b1 JB |
4357 | if (wait_proc != 0 && !NILP (wait_proc->raw_status_low)) |
4358 | update_status (wait_proc); | |
4359 | if (wait_proc != 0 | |
dd2a17ab KS |
4360 | && ! EQ (wait_proc->status, Qrun) |
4361 | && ! EQ (wait_proc->status, Qconnect)) | |
9aa2a7f4 | 4362 | { |
215b45e9 | 4363 | int nread, total_nread = 0; |
7ce63188 | 4364 | |
9aa2a7f4 | 4365 | clear_waiting_for_input (); |
7ce63188 RS |
4366 | XSETPROCESS (proc, wait_proc); |
4367 | ||
4368 | /* Read data from the process, until we exhaust it. */ | |
e1b37c34 | 4369 | while (XINT (wait_proc->infd) >= 0) |
215b45e9 | 4370 | { |
e1b37c34 GM |
4371 | nread = read_process_output (proc, XINT (wait_proc->infd)); |
4372 | ||
4373 | if (nread == 0) | |
4374 | break; | |
4375 | ||
177c0ea7 | 4376 | if (0 < nread) |
215b45e9 RS |
4377 | total_nread += nread; |
4378 | #ifdef EIO | |
4379 | else if (nread == -1 && EIO == errno) | |
4380 | break; | |
e1b37c34 GM |
4381 | #endif |
4382 | #ifdef EAGAIN | |
4383 | else if (nread == -1 && EAGAIN == errno) | |
4384 | break; | |
4385 | #endif | |
4386 | #ifdef EWOULDBLOCK | |
4387 | else if (nread == -1 && EWOULDBLOCK == errno) | |
4388 | break; | |
215b45e9 RS |
4389 | #endif |
4390 | } | |
7ce63188 | 4391 | if (total_nread > 0 && do_display) |
3007ebfb | 4392 | redisplay_preserve_echo_area (10); |
7ce63188 | 4393 | |
9aa2a7f4 JB |
4394 | break; |
4395 | } | |
6be429b1 | 4396 | |
d0d6b7c5 JB |
4397 | /* Wait till there is something to do */ |
4398 | ||
b89a415a | 4399 | if (wait_proc && just_wait_proc) |
107ed38d | 4400 | { |
b89a415a KS |
4401 | if (XINT (wait_proc->infd) < 0) /* Terminated */ |
4402 | break; | |
107ed38d | 4403 | FD_SET (XINT (wait_proc->infd), &Available); |
bad49fc7 KS |
4404 | check_delay = 0; |
4405 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
107ed38d KS |
4406 | } |
4407 | else if (!NILP (wait_for_cell)) | |
dd2a17ab KS |
4408 | { |
4409 | Available = non_process_wait_mask; | |
bad49fc7 KS |
4410 | check_delay = 0; |
4411 | IF_NON_BLOCKING_CONNECT (check_connect = 0); | |
dd2a17ab | 4412 | } |
a69281ff | 4413 | else |
dd2a17ab | 4414 | { |
b89a415a | 4415 | if (! read_kbd) |
dd2a17ab KS |
4416 | Available = non_keyboard_wait_mask; |
4417 | else | |
4418 | Available = input_wait_mask; | |
bad49fc7 | 4419 | IF_NON_BLOCKING_CONNECT (check_connect = (num_pending_connects > 0)); |
3af55251 | 4420 | check_delay = wait_channel >= 0 ? 0 : process_output_delay_count; |
dd2a17ab | 4421 | } |
d0d6b7c5 | 4422 | |
ff11dfa1 | 4423 | /* If frame size has changed or the window is newly mapped, |
ffd56f97 JB |
4424 | redisplay now, before we start to wait. There is a race |
4425 | condition here; if a SIGIO arrives between now and the select | |
016899c0 JB |
4426 | and indicates that a frame is trashed, the select may block |
4427 | displaying a trashed screen. */ | |
5164ee8e | 4428 | if (frame_garbaged && do_display) |
7286affd RS |
4429 | { |
4430 | clear_waiting_for_input (); | |
3007ebfb | 4431 | redisplay_preserve_echo_area (11); |
b89a415a | 4432 | if (read_kbd < 0) |
7efe788e | 4433 | set_waiting_for_input (&timeout); |
7286affd | 4434 | } |
ffd56f97 | 4435 | |
dd2a17ab | 4436 | no_avail = 0; |
b89a415a | 4437 | if (read_kbd && detect_input_pending ()) |
0a65b032 RS |
4438 | { |
4439 | nfds = 0; | |
dd2a17ab | 4440 | no_avail = 1; |
0a65b032 RS |
4441 | } |
4442 | else | |
dd2a17ab | 4443 | { |
bad49fc7 | 4444 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab KS |
4445 | if (check_connect) |
4446 | Connecting = connect_wait_mask; | |
bad49fc7 | 4447 | #endif |
2d942bfa KS |
4448 | |
4449 | #ifdef ADAPTIVE_READ_BUFFERING | |
db853b7a KS |
4450 | /* Set the timeout for adaptive read buffering if any |
4451 | process has non-nil read_output_skip and non-zero | |
4452 | read_output_delay, and we are not reading output for a | |
4453 | specific wait_channel. It is not executed if | |
4454 | Vprocess_adaptive_read_buffering is nil. */ | |
2d942bfa KS |
4455 | if (process_output_skip && check_delay > 0) |
4456 | { | |
4457 | int usecs = EMACS_USECS (timeout); | |
4458 | if (EMACS_SECS (timeout) > 0 || usecs > READ_OUTPUT_DELAY_MAX) | |
4459 | usecs = READ_OUTPUT_DELAY_MAX; | |
4460 | for (channel = 0; check_delay > 0 && channel <= max_process_desc; channel++) | |
4461 | { | |
4462 | proc = chan_process[channel]; | |
4463 | if (NILP (proc)) | |
4464 | continue; | |
db853b7a KS |
4465 | /* Find minimum non-zero read_output_delay among the |
4466 | processes with non-nil read_output_skip. */ | |
9076a823 | 4467 | if (XINT (XPROCESS (proc)->read_output_delay) > 0) |
2d942bfa KS |
4468 | { |
4469 | check_delay--; | |
4470 | if (NILP (XPROCESS (proc)->read_output_skip)) | |
4471 | continue; | |
4472 | FD_CLR (channel, &Available); | |
4473 | XPROCESS (proc)->read_output_skip = Qnil; | |
4474 | if (XINT (XPROCESS (proc)->read_output_delay) < usecs) | |
4475 | usecs = XINT (XPROCESS (proc)->read_output_delay); | |
4476 | } | |
4477 | } | |
4478 | EMACS_SET_SECS_USECS (timeout, 0, usecs); | |
4479 | process_output_skip = 0; | |
4480 | } | |
4481 | #endif | |
4482 | ||
dd2a17ab | 4483 | nfds = select (max (max_process_desc, max_keyboard_desc) + 1, |
177c0ea7 | 4484 | &Available, |
bad49fc7 | 4485 | #ifdef NON_BLOCKING_CONNECT |
dd2a17ab | 4486 | (check_connect ? &Connecting : (SELECT_TYPE *)0), |
bad49fc7 KS |
4487 | #else |
4488 | (SELECT_TYPE *)0, | |
4489 | #endif | |
dd2a17ab KS |
4490 | (SELECT_TYPE *)0, &timeout); |
4491 | } | |
6720a7fb | 4492 | |
d0d6b7c5 JB |
4493 | xerrno = errno; |
4494 | ||
4495 | /* Make C-g and alarm signals set flags again */ | |
4496 | clear_waiting_for_input (); | |
4497 | ||
4498 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 4499 | do_pending_window_change (0); |
d0d6b7c5 | 4500 | |
c0239a0b RS |
4501 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
4502 | /* We wanted the full specified time, so return now. */ | |
d0d6b7c5 JB |
4503 | break; |
4504 | if (nfds < 0) | |
4505 | { | |
4506 | if (xerrno == EINTR) | |
dd2a17ab | 4507 | no_avail = 1; |
b0310da4 JB |
4508 | #ifdef ultrix |
4509 | /* Ultrix select seems to return ENOMEM when it is | |
4510 | interrupted. Treat it just like EINTR. Bleah. Note | |
4511 | that we want to test for the "ultrix" CPP symbol, not | |
4512 | "__ultrix__"; the latter is only defined under GCC, but | |
4513 | not by DEC's bundled CC. -JimB */ | |
8058415c | 4514 | else if (xerrno == ENOMEM) |
dd2a17ab | 4515 | no_avail = 1; |
8058415c | 4516 | #endif |
d0d6b7c5 JB |
4517 | #ifdef ALLIANT |
4518 | /* This happens for no known reason on ALLIANT. | |
4519 | I am guessing that this is the right response. -- RMS. */ | |
4520 | else if (xerrno == EFAULT) | |
dd2a17ab | 4521 | no_avail = 1; |
d0d6b7c5 JB |
4522 | #endif |
4523 | else if (xerrno == EBADF) | |
4524 | { | |
4525 | #ifdef AIX | |
4526 | /* AIX doesn't handle PTY closure the same way BSD does. On AIX, | |
4527 | the child's closure of the pts gives the parent a SIGHUP, and | |
4528 | the ptc file descriptor is automatically closed, | |
4529 | yielding EBADF here or at select() call above. | |
4530 | So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF | |
a0e4d3f3 | 4531 | in m/ibmrt-aix.h), and here we just ignore the select error. |
d0d6b7c5 | 4532 | Cleanup occurs c/o status_notify after SIGCLD. */ |
dd2a17ab | 4533 | no_avail = 1; /* Cannot depend on values returned */ |
d0d6b7c5 JB |
4534 | #else |
4535 | abort (); | |
4536 | #endif | |
4537 | } | |
4538 | else | |
68c45bf0 | 4539 | error ("select error: %s", emacs_strerror (xerrno)); |
d0d6b7c5 | 4540 | } |
dd2a17ab KS |
4541 | |
4542 | if (no_avail) | |
4543 | { | |
4544 | FD_ZERO (&Available); | |
bad49fc7 | 4545 | IF_NON_BLOCKING_CONNECT (check_connect = 0); |
dd2a17ab KS |
4546 | } |
4547 | ||
26ec91de | 4548 | #if defined(sun) && !defined(USG5_4) |
dd2a17ab KS |
4549 | if (nfds > 0 && keyboard_bit_set (&Available) |
4550 | && interrupt_input) | |
e0109153 JB |
4551 | /* System sometimes fails to deliver SIGIO. |
4552 | ||
4553 | David J. Mackenzie says that Emacs doesn't compile under | |
4554 | Solaris if this code is enabled, thus the USG5_4 in the CPP | |
4555 | conditional. "I haven't noticed any ill effects so far. | |
4556 | If you find a Solaris expert somewhere, they might know | |
4557 | better." */ | |
d0d6b7c5 JB |
4558 | kill (getpid (), SIGIO); |
4559 | #endif | |
4560 | ||
5d5beb62 RS |
4561 | #if 0 /* When polling is used, interrupt_input is 0, |
4562 | so get_input_pending should read the input. | |
4563 | So this should not be needed. */ | |
4564 | /* If we are using polling for input, | |
4565 | and we see input available, make it get read now. | |
4566 | Otherwise it might not actually get read for a second. | |
214d6069 | 4567 | And on hpux, since we turn off polling in wait_reading_process_output, |
5d5beb62 | 4568 | it might never get read at all if we don't spend much time |
214d6069 | 4569 | outside of wait_reading_process_output. */ |
b89a415a | 4570 | if (read_kbd && interrupt_input |
5d5beb62 RS |
4571 | && keyboard_bit_set (&Available) |
4572 | && input_polling_used ()) | |
4573 | kill (getpid (), SIGALRM); | |
4574 | #endif | |
4575 | ||
d0d6b7c5 JB |
4576 | /* Check for keyboard input */ |
4577 | /* If there is any, return immediately | |
4578 | to give it higher priority than subprocesses */ | |
4579 | ||
b89a415a | 4580 | if (read_kbd != 0) |
6ed6233b | 4581 | { |
a2fab450 | 4582 | int old_timers_run = timers_run; |
c88164fe | 4583 | struct buffer *old_buffer = current_buffer; |
a2fab450 | 4584 | int leave = 0; |
177c0ea7 | 4585 | |
5d6c2aa3 | 4586 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 GM |
4587 | { |
4588 | swallow_events (do_display); | |
4589 | if (detect_input_pending_run_timers (do_display)) | |
4590 | leave = 1; | |
4591 | } | |
6ed6233b | 4592 | |
a2fab450 GM |
4593 | /* If a timer has run, this might have changed buffers |
4594 | an alike. Make read_key_sequence aware of that. */ | |
4595 | if (timers_run != old_timers_run | |
c88164fe GM |
4596 | && waiting_for_user_input_p == -1 |
4597 | && old_buffer != current_buffer) | |
a2fab450 GM |
4598 | record_asynch_buffer_change (); |
4599 | ||
4600 | if (leave) | |
4601 | break; | |
177c0ea7 JB |
4602 | } |
4603 | ||
69645afc | 4604 | /* If there is unread keyboard input, also return. */ |
b89a415a | 4605 | if (read_kbd != 0 |
69645afc RS |
4606 | && requeued_events_pending_p ()) |
4607 | break; | |
4608 | ||
77e1b3d4 RS |
4609 | /* If we are not checking for keyboard input now, |
4610 | do process events (but don't run any timers). | |
4611 | This is so that X events will be processed. | |
0c9960e9 | 4612 | Otherwise they may have to wait until polling takes place. |
77e1b3d4 RS |
4613 | That would causes delays in pasting selections, for example. |
4614 | ||
4615 | (We used to do this only if wait_for_cell.) */ | |
b89a415a | 4616 | if (read_kbd == 0 && detect_input_pending ()) |
f854a00b RS |
4617 | { |
4618 | swallow_events (do_display); | |
0c9960e9 | 4619 | #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */ |
f854a00b RS |
4620 | if (detect_input_pending ()) |
4621 | break; | |
5d5beb62 | 4622 | #endif |
0c9960e9 | 4623 | } |
f854a00b | 4624 | |
84aa3ace | 4625 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 4626 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
84aa3ace RS |
4627 | break; |
4628 | ||
4746118a | 4629 | #ifdef SIGIO |
5d5beb62 | 4630 | /* If we think we have keyboard input waiting, but didn't get SIGIO, |
d0d6b7c5 JB |
4631 | go read it. This can happen with X on BSD after logging out. |
4632 | In that case, there really is no input and no SIGIO, | |
4633 | but select says there is input. */ | |
4634 | ||
b89a415a | 4635 | if (read_kbd && interrupt_input |
2601f59e | 4636 | && keyboard_bit_set (&Available) && ! noninteractive) |
e643c5be | 4637 | kill (getpid (), SIGIO); |
4746118a | 4638 | #endif |
d0d6b7c5 | 4639 | |
d0d6b7c5 JB |
4640 | if (! wait_proc) |
4641 | got_some_input |= nfds > 0; | |
4642 | ||
32676c08 JB |
4643 | /* If checking input just got us a size-change event from X, |
4644 | obey it now if we should. */ | |
b89a415a | 4645 | if (read_kbd || ! NILP (wait_for_cell)) |
2b653806 | 4646 | do_pending_window_change (0); |
32676c08 | 4647 | |
a9f2c884 | 4648 | /* Check for data from a process. */ |
dd2a17ab KS |
4649 | if (no_avail || nfds == 0) |
4650 | continue; | |
4651 | ||
a9f2c884 RS |
4652 | /* Really FIRST_PROC_DESC should be 0 on Unix, |
4653 | but this is safer in the short run. */ | |
a69281ff | 4654 | for (channel = 0; channel <= max_process_desc; channel++) |
d0d6b7c5 | 4655 | { |
a69281ff RS |
4656 | if (FD_ISSET (channel, &Available) |
4657 | && FD_ISSET (channel, &non_keyboard_wait_mask)) | |
d0d6b7c5 JB |
4658 | { |
4659 | int nread; | |
4660 | ||
4661 | /* If waiting for this channel, arrange to return as | |
4662 | soon as no more input to be processed. No more | |
4663 | waiting. */ | |
4664 | if (wait_channel == channel) | |
4665 | { | |
a9f2c884 | 4666 | wait_channel = -1; |
d0d6b7c5 JB |
4667 | time_limit = -1; |
4668 | got_some_input = 1; | |
4669 | } | |
4670 | proc = chan_process[channel]; | |
4671 | if (NILP (proc)) | |
4672 | continue; | |
4673 | ||
e690ca94 KS |
4674 | /* If this is a server stream socket, accept connection. */ |
4675 | if (EQ (XPROCESS (proc)->status, Qlisten)) | |
4676 | { | |
4677 | server_accept_connection (proc, channel); | |
4678 | continue; | |
4679 | } | |
4680 | ||
d0d6b7c5 JB |
4681 | /* Read data from the process, starting with our |
4682 | buffered-ahead character if we have one. */ | |
4683 | ||
4684 | nread = read_process_output (proc, channel); | |
4685 | if (nread > 0) | |
4686 | { | |
4687 | /* Since read_process_output can run a filter, | |
4688 | which can call accept-process-output, | |
4689 | don't try to read from any other processes | |
4690 | before doing the select again. */ | |
4691 | FD_ZERO (&Available); | |
4692 | ||
4693 | if (do_display) | |
3007ebfb | 4694 | redisplay_preserve_echo_area (12); |
d0d6b7c5 JB |
4695 | } |
4696 | #ifdef EWOULDBLOCK | |
4697 | else if (nread == -1 && errno == EWOULDBLOCK) | |
4698 | ; | |
0b75e9a4 | 4699 | #endif |
89d7280d RS |
4700 | /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK, |
4701 | and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */ | |
d0d6b7c5 JB |
4702 | #ifdef O_NONBLOCK |
4703 | else if (nread == -1 && errno == EAGAIN) | |
4704 | ; | |
4705 | #else | |
4706 | #ifdef O_NDELAY | |
4707 | else if (nread == -1 && errno == EAGAIN) | |
4708 | ; | |
4709 | /* Note that we cannot distinguish between no input | |
4710 | available now and a closed pipe. | |
4711 | With luck, a closed pipe will be accompanied by | |
4712 | subprocess termination and SIGCHLD. */ | |
4713 | else if (nread == 0 && !NETCONN_P (proc)) | |
4714 | ; | |
ffd56f97 JB |
4715 | #endif /* O_NDELAY */ |
4716 | #endif /* O_NONBLOCK */ | |
d0d6b7c5 JB |
4717 | #ifdef HAVE_PTYS |
4718 | /* On some OSs with ptys, when the process on one end of | |
4719 | a pty exits, the other end gets an error reading with | |
4720 | errno = EIO instead of getting an EOF (0 bytes read). | |
4721 | Therefore, if we get an error reading and errno = | |
4722 | EIO, just continue, because the child process has | |
4723 | exited and should clean itself up soon (e.g. when we | |
5651af6d RS |
4724 | get a SIGCHLD). |
4725 | ||
4726 | However, it has been known to happen that the SIGCHLD | |
4727 | got lost. So raise the signl again just in case. | |
4728 | It can't hurt. */ | |
d0d6b7c5 | 4729 | else if (nread == -1 && errno == EIO) |
5651af6d | 4730 | kill (getpid (), SIGCHLD); |
ffd56f97 JB |
4731 | #endif /* HAVE_PTYS */ |
4732 | /* If we can detect process termination, don't consider the process | |
4733 | gone just because its pipe is closed. */ | |
d0d6b7c5 JB |
4734 | #ifdef SIGCHLD |
4735 | else if (nread == 0 && !NETCONN_P (proc)) | |
4736 | ; | |
4737 | #endif | |
4738 | else | |
4739 | { | |
4740 | /* Preserve status of processes already terminated. */ | |
4741 | XSETINT (XPROCESS (proc)->tick, ++process_tick); | |
4742 | deactivate_process (proc); | |
4743 | if (!NILP (XPROCESS (proc)->raw_status_low)) | |
4744 | update_status (XPROCESS (proc)); | |
4745 | if (EQ (XPROCESS (proc)->status, Qrun)) | |
4746 | XPROCESS (proc)->status | |
4747 | = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
4748 | } | |
4749 | } | |
177c0ea7 | 4750 | #ifdef NON_BLOCKING_CONNECT |
1566f511 KS |
4751 | if (check_connect && FD_ISSET (channel, &Connecting) |
4752 | && FD_ISSET (channel, &connect_wait_mask)) | |
dd2a17ab KS |
4753 | { |
4754 | struct Lisp_Process *p; | |
dd2a17ab KS |
4755 | |
4756 | FD_CLR (channel, &connect_wait_mask); | |
4757 | if (--num_pending_connects < 0) | |
4758 | abort (); | |
4759 | ||
4760 | proc = chan_process[channel]; | |
4761 | if (NILP (proc)) | |
4762 | continue; | |
4763 | ||
4764 | p = XPROCESS (proc); | |
4765 | ||
4766 | #ifdef GNU_LINUX | |
4767 | /* getsockopt(,,SO_ERROR,,) is said to hang on some systems. | |
4768 | So only use it on systems where it is known to work. */ | |
4769 | { | |
e690ca94 | 4770 | int xlen = sizeof(xerrno); |
dd2a17ab KS |
4771 | if (getsockopt(channel, SOL_SOCKET, SO_ERROR, &xerrno, &xlen)) |
4772 | xerrno = errno; | |
4773 | } | |
4774 | #else | |
44c887be PJ |
4775 | { |
4776 | struct sockaddr pname; | |
4777 | int pnamelen = sizeof(pname); | |
4778 | ||
4779 | /* If connection failed, getpeername will fail. */ | |
4780 | xerrno = 0; | |
4781 | if (getpeername(channel, &pname, &pnamelen) < 0) | |
4782 | { | |
4783 | /* Obtain connect failure code through error slippage. */ | |
4784 | char dummy; | |
dd2a17ab | 4785 | xerrno = errno; |
44c887be PJ |
4786 | if (errno == ENOTCONN && read(channel, &dummy, 1) < 0) |
4787 | xerrno = errno; | |
4788 | } | |
4789 | } | |
dd2a17ab KS |
4790 | #endif |
4791 | if (xerrno) | |
4792 | { | |
4793 | XSETINT (p->tick, ++process_tick); | |
4794 | p->status = Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)); | |
4795 | deactivate_process (proc); | |
4796 | } | |
4797 | else | |
4798 | { | |
4799 | p->status = Qrun; | |
4800 | /* Execute the sentinel here. If we had relied on | |
4801 | status_notify to do it later, it will read input | |
4802 | from the process before calling the sentinel. */ | |
4803 | exec_sentinel (proc, build_string ("open\n")); | |
e690ca94 | 4804 | if (!EQ (p->filter, Qt) && !EQ (p->command, Qt)) |
dd2a17ab KS |
4805 | { |
4806 | FD_SET (XINT (p->infd), &input_wait_mask); | |
4807 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
4808 | } | |
4809 | } | |
4810 | } | |
4811 | #endif /* NON_BLOCKING_CONNECT */ | |
ffd56f97 JB |
4812 | } /* end for each file descriptor */ |
4813 | } /* end while exit conditions not met */ | |
d0d6b7c5 | 4814 | |
855448dc | 4815 | waiting_for_user_input_p = saved_waiting_for_user_input_p; |
d430ee71 | 4816 | |
ffd56f97 JB |
4817 | /* If calling from keyboard input, do not quit |
4818 | since we want to return C-g as an input character. | |
4819 | Otherwise, do pending quit if requested. */ | |
b89a415a | 4820 | if (read_kbd >= 0) |
ffd56f97 JB |
4821 | { |
4822 | /* Prevent input_pending from remaining set if we quit. */ | |
4823 | clear_input_pending (); | |
4824 | QUIT; | |
4825 | } | |
19310311 | 4826 | #ifdef POLL_INTERRUPTED_SYS_CALL |
e07d5449 KH |
4827 | /* AlainF 5-Jul-1996 |
4828 | HP-UX 10.10 seems to have problems with signals coming in | |
4829 | Causes "poll: interrupted system call" messages when Emacs is run | |
4830 | in an X window | |
4831 | Turn periodic alarms back on */ | |
5d5beb62 | 4832 | start_polling (); |
19310311 | 4833 | #endif /* POLL_INTERRUPTED_SYS_CALL */ |
efa2a55c | 4834 | |
d0d6b7c5 JB |
4835 | return got_some_input; |
4836 | } | |
4837 | \f | |
3b9a3dfa RS |
4838 | /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */ |
4839 | ||
4840 | static Lisp_Object | |
4841 | read_process_output_call (fun_and_args) | |
4842 | Lisp_Object fun_and_args; | |
4843 | { | |
70949dac | 4844 | return apply1 (XCAR (fun_and_args), XCDR (fun_and_args)); |
3b9a3dfa RS |
4845 | } |
4846 | ||
4847 | static Lisp_Object | |
4848 | read_process_output_error_handler (error) | |
4849 | Lisp_Object error; | |
4850 | { | |
4851 | cmd_error_internal (error, "error in process filter: "); | |
4852 | Vinhibit_quit = Qt; | |
4853 | update_echo_area (); | |
833ba342 | 4854 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 4855 | return Qt; |
3b9a3dfa RS |
4856 | } |
4857 | ||
d0d6b7c5 JB |
4858 | /* Read pending output from the process channel, |
4859 | starting with our buffered-ahead character if we have one. | |
0fa1789e | 4860 | Yield number of decoded characters read. |
d0d6b7c5 | 4861 | |
116c423c | 4862 | This function reads at most 4096 characters. |
d0d6b7c5 | 4863 | If you want to read all available subprocess output, |
0fa1789e KH |
4864 | you must call it repeatedly until it returns zero. |
4865 | ||
4866 | The characters read are decoded according to PROC's coding-system | |
4867 | for decoding. */ | |
d0d6b7c5 | 4868 | |
ff6daed3 | 4869 | static int |
d0d6b7c5 JB |
4870 | read_process_output (proc, channel) |
4871 | Lisp_Object proc; | |
4872 | register int channel; | |
4873 | { | |
e1283999 | 4874 | register int nbytes; |
d0d6b7c5 | 4875 | char *chars; |
d0d6b7c5 JB |
4876 | register Lisp_Object outstream; |
4877 | register struct buffer *old = current_buffer; | |
4878 | register struct Lisp_Process *p = XPROCESS (proc); | |
4879 | register int opoint; | |
c7580538 | 4880 | struct coding_system *coding = proc_decode_coding_system[channel]; |
e7fbaa65 | 4881 | int carryover = XINT (p->decoding_carryover); |
116c423c | 4882 | int readmax = 4096; |
d0d6b7c5 JB |
4883 | |
4884 | #ifdef VMS | |
4885 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); | |
4886 | ||
4887 | vs = get_vms_process_pointer (p->pid); | |
4888 | if (vs) | |
4889 | { | |
4890 | if (!vs->iosb[0]) | |
a319f7c1 | 4891 | return (0); /* Really weird if it does this */ |
d0d6b7c5 JB |
4892 | if (!(vs->iosb[0] & 1)) |
4893 | return -1; /* I/O error */ | |
4894 | } | |
4895 | else | |
4896 | error ("Could not get VMS process pointer"); | |
4897 | chars = vs->inputBuffer; | |
1d2fc612 RS |
4898 | nbytes = clean_vms_buffer (chars, vs->iosb[1]); |
4899 | if (nbytes <= 0) | |
d0d6b7c5 JB |
4900 | { |
4901 | start_vms_process_read (vs); /* Crank up the next read on the process */ | |
4902 | return 1; /* Nothing worth printing, say we got 1 */ | |
4903 | } | |
e7fbaa65 | 4904 | if (carryover > 0) |
0fa1789e | 4905 | { |
e7fbaa65 KH |
4906 | /* The data carried over in the previous decoding (which are at |
4907 | the tail of decoding buffer) should be prepended to the new | |
4908 | data read to decode all together. */ | |
ed7a4b2d | 4909 | chars = (char *) alloca (nbytes + carryover); |
d5db4077 | 4910 | bcopy (SDATA (p->decoding_buf), buf, carryover); |
ed7a4b2d | 4911 | bcopy (vs->inputBuffer, chars + carryover, nbytes); |
0fa1789e | 4912 | } |
d0d6b7c5 | 4913 | #else /* not VMS */ |
e690ca94 | 4914 | |
e690ca94 | 4915 | chars = (char *) alloca (carryover + readmax); |
e7fbaa65 KH |
4916 | if (carryover) |
4917 | /* See the comment above. */ | |
d5db4077 | 4918 | bcopy (SDATA (p->decoding_buf), chars, carryover); |
0fa1789e | 4919 | |
e690ca94 KS |
4920 | #ifdef DATAGRAM_SOCKETS |
4921 | /* We have a working select, so proc_buffered_char is always -1. */ | |
4922 | if (DATAGRAM_CHAN_P (channel)) | |
4923 | { | |
4924 | int len = datagram_address[channel].len; | |
39b1da20 | 4925 | nbytes = recvfrom (channel, chars + carryover, readmax, |
e690ca94 KS |
4926 | 0, datagram_address[channel].sa, &len); |
4927 | } | |
4928 | else | |
4929 | #endif | |
d0d6b7c5 | 4930 | if (proc_buffered_char[channel] < 0) |
2d942bfa | 4931 | { |
39b1da20 | 4932 | nbytes = emacs_read (channel, chars + carryover, readmax); |
2d942bfa | 4933 | #ifdef ADAPTIVE_READ_BUFFERING |
39b1da20 | 4934 | if (nbytes > 0 && !NILP (p->adaptive_read_buffering)) |
2d942bfa KS |
4935 | { |
4936 | int delay = XINT (p->read_output_delay); | |
05b72afd | 4937 | if (nbytes < 256) |
2d942bfa KS |
4938 | { |
4939 | if (delay < READ_OUTPUT_DELAY_MAX_MAX) | |
4940 | { | |
4941 | if (delay == 0) | |
4942 | process_output_delay_count++; | |
4943 | delay += READ_OUTPUT_DELAY_INCREMENT * 2; | |
4944 | } | |
4945 | } | |
39b1da20 | 4946 | else if (delay > 0 && (nbytes == readmax)) |
2d942bfa KS |
4947 | { |
4948 | delay -= READ_OUTPUT_DELAY_INCREMENT; | |
4949 | if (delay == 0) | |
4950 | process_output_delay_count--; | |
4951 | } | |
4952 | XSETINT (p->read_output_delay, delay); | |
4953 | if (delay) | |
4954 | { | |
4955 | p->read_output_skip = Qt; | |
4956 | process_output_skip = 1; | |
4957 | } | |
4958 | } | |
4959 | #endif | |
4960 | } | |
d0d6b7c5 JB |
4961 | else |
4962 | { | |
ed7a4b2d | 4963 | chars[carryover] = proc_buffered_char[channel]; |
d0d6b7c5 | 4964 | proc_buffered_char[channel] = -1; |
39b1da20 | 4965 | nbytes = emacs_read (channel, chars + carryover + 1, readmax - 1); |
1d2fc612 RS |
4966 | if (nbytes < 0) |
4967 | nbytes = 1; | |
d0d6b7c5 | 4968 | else |
1d2fc612 | 4969 | nbytes = nbytes + 1; |
d0d6b7c5 JB |
4970 | } |
4971 | #endif /* not VMS */ | |
4972 | ||
ca65341e KH |
4973 | XSETINT (p->decoding_carryover, 0); |
4974 | ||
ed7a4b2d | 4975 | /* At this point, NBYTES holds number of bytes just received |
0fa1789e | 4976 | (including the one in proc_buffered_char[channel]). */ |
de7fbd09 KH |
4977 | if (nbytes <= 0) |
4978 | { | |
4979 | if (nbytes < 0 || coding->mode & CODING_MODE_LAST_BLOCK) | |
4980 | return nbytes; | |
4981 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
4982 | } | |
d0d6b7c5 | 4983 | |
1d2fc612 | 4984 | /* Now set NBYTES how many bytes we must decode. */ |
e7fbaa65 | 4985 | nbytes += carryover; |
0fa1789e | 4986 | |
1d2fc612 | 4987 | /* Read and dispose of the process output. */ |
d0d6b7c5 JB |
4988 | outstream = p->filter; |
4989 | if (!NILP (outstream)) | |
4990 | { | |
177c0ea7 | 4991 | /* We inhibit quit here instead of just catching it so that |
d0d6b7c5 JB |
4992 | hitting ^G when a filter happens to be running won't screw |
4993 | it up. */ | |
aed13378 | 4994 | int count = SPECPDL_INDEX (); |
30c78175 | 4995 | Lisp_Object odeactivate; |
dfc21838 | 4996 | Lisp_Object obuffer, okeymap; |
1d2fc612 | 4997 | Lisp_Object text; |
4da2f5be | 4998 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 4999 | int waiting = waiting_for_user_input_p; |
30c78175 | 5000 | |
dfc21838 RS |
5001 | /* No need to gcpro these, because all we do with them later |
5002 | is test them for EQness, and none of them should be a string. */ | |
30c78175 | 5003 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
5004 | XSETBUFFER (obuffer, current_buffer); |
5005 | okeymap = current_buffer->keymap; | |
30c78175 | 5006 | |
d0d6b7c5 | 5007 | specbind (Qinhibit_quit, Qt); |
6545aada | 5008 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 5009 | |
4da2f5be RS |
5010 | /* In case we get recursively called, |
5011 | and we already saved the match data nonrecursively, | |
5012 | save the same match data in safely recursive fashion. */ | |
5013 | if (outer_running_asynch_code) | |
5014 | { | |
5015 | Lisp_Object tem; | |
5016 | /* Don't clobber the CURRENT match data, either! */ | |
89f2614d KS |
5017 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
5018 | restore_search_regs (); | |
5019 | record_unwind_save_match_data (); | |
5020 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
5021 | } |
5022 | ||
5023 | /* For speed, if a search happens within this code, | |
5024 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 5025 | running_asynch_code = 1; |
4da2f5be | 5026 | |
ed7a4b2d KH |
5027 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
5028 | coding, 0); | |
082a1df2 | 5029 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
5030 | /* A new coding system might be found. */ |
5031 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
5032 | { | |
5033 | p->decode_coding_system = coding->symbol; | |
5034 | ||
5035 | /* Don't call setup_coding_system for | |
5036 | proc_decode_coding_system[channel] here. It is done in | |
5037 | detect_coding called via decode_coding above. */ | |
5038 | ||
5039 | /* If a coding system for encoding is not yet decided, we set | |
5040 | it as the same as coding-system for decoding. | |
5041 | ||
5042 | But, before doing that we must check if | |
5043 | proc_encode_coding_system[p->outfd] surely points to a | |
5044 | valid memory because p->outfd will be changed once EOF is | |
5045 | sent to the process. */ | |
5046 | if (NILP (p->encode_coding_system) | |
5047 | && proc_encode_coding_system[XINT (p->outfd)]) | |
5048 | { | |
5049 | p->encode_coding_system = coding->symbol; | |
5050 | setup_coding_system (coding->symbol, | |
5051 | proc_encode_coding_system[XINT (p->outfd)]); | |
5052 | } | |
5053 | } | |
51c6067d | 5054 | |
ed7a4b2d | 5055 | carryover = nbytes - coding->consumed; |
d7d2483a KS |
5056 | if (SCHARS (p->decoding_buf) < carryover) |
5057 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 5058 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
5059 | carryover); |
5060 | XSETINT (p->decoding_carryover, carryover); | |
03f04413 KH |
5061 | /* Adjust the multibyteness of TEXT to that of the filter. */ |
5062 | if (NILP (p->filter_multibyte) != ! STRING_MULTIBYTE (text)) | |
5063 | text = (STRING_MULTIBYTE (text) | |
5064 | ? Fstring_as_unibyte (text) | |
5065 | : Fstring_to_multibyte (text)); | |
e430e5ba | 5066 | if (SBYTES (text) > 0) |
dd97db06 KH |
5067 | internal_condition_case_1 (read_process_output_call, |
5068 | Fcons (outstream, | |
5069 | Fcons (proc, Fcons (text, Qnil))), | |
5070 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
5071 | read_process_output_error_handler); | |
4da2f5be RS |
5072 | |
5073 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 5074 | restore_search_regs (); |
4da2f5be | 5075 | running_asynch_code = outer_running_asynch_code; |
d0d6b7c5 | 5076 | |
592ce97f | 5077 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5078 | Vdeactivate_mark = odeactivate; |
5079 | ||
bbce7d72 RS |
5080 | /* Restore waiting_for_user_input_p as it was |
5081 | when we were called, in case the filter clobbered it. */ | |
5082 | waiting_for_user_input_p = waiting; | |
5083 | ||
7973cfa8 RS |
5084 | #if 0 /* Call record_asynch_buffer_change unconditionally, |
5085 | because we might have changed minor modes or other things | |
5086 | that affect key bindings. */ | |
dfc21838 RS |
5087 | if (! EQ (Fcurrent_buffer (), obuffer) |
5088 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 5089 | #endif |
927e08be RS |
5090 | /* But do it only if the caller is actually going to read events. |
5091 | Otherwise there's no need to make him wake up, and it could | |
5092 | cause trouble (for example it would make Fsit_for return). */ | |
5093 | if (waiting_for_user_input_p == -1) | |
5094 | record_asynch_buffer_change (); | |
d72534ba | 5095 | |
d0d6b7c5 JB |
5096 | #ifdef VMS |
5097 | start_vms_process_read (vs); | |
5098 | #endif | |
2ea6d561 | 5099 | unbind_to (count, Qnil); |
e430e5ba | 5100 | return nbytes; |
d0d6b7c5 JB |
5101 | } |
5102 | ||
5103 | /* If no filter, write into buffer if it isn't dead. */ | |
5104 | if (!NILP (p->buffer) && !NILP (XBUFFER (p->buffer)->name)) | |
5105 | { | |
b0310da4 | 5106 | Lisp_Object old_read_only; |
12ca5cdf | 5107 | int old_begv, old_zv; |
d8a2934e | 5108 | int old_begv_byte, old_zv_byte; |
30c78175 | 5109 | Lisp_Object odeactivate; |
d8a2934e RS |
5110 | int before, before_byte; |
5111 | int opoint_byte; | |
ed7a4b2d | 5112 | Lisp_Object text; |
926b7e5e | 5113 | struct buffer *b; |
30c78175 RS |
5114 | |
5115 | odeactivate = Vdeactivate_mark; | |
d0d6b7c5 JB |
5116 | |
5117 | Fset_buffer (p->buffer); | |
6ec8bbd2 | 5118 | opoint = PT; |
d8a2934e | 5119 | opoint_byte = PT_BYTE; |
b0310da4 | 5120 | old_read_only = current_buffer->read_only; |
12ca5cdf RS |
5121 | old_begv = BEGV; |
5122 | old_zv = ZV; | |
d8a2934e RS |
5123 | old_begv_byte = BEGV_BYTE; |
5124 | old_zv_byte = ZV_BYTE; | |
b0310da4 JB |
5125 | |
5126 | current_buffer->read_only = Qnil; | |
d0d6b7c5 JB |
5127 | |
5128 | /* Insert new output into buffer | |
5129 | at the current end-of-output marker, | |
5130 | thus preserving logical ordering of input and output. */ | |
5131 | if (XMARKER (p->mark)->buffer) | |
d8a2934e RS |
5132 | SET_PT_BOTH (clip_to_bounds (BEGV, marker_position (p->mark), ZV), |
5133 | clip_to_bounds (BEGV_BYTE, marker_byte_position (p->mark), | |
5134 | ZV_BYTE)); | |
d0d6b7c5 | 5135 | else |
d8a2934e | 5136 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf | 5137 | before = PT; |
d8a2934e | 5138 | before_byte = PT_BYTE; |
b0310da4 JB |
5139 | |
5140 | /* If the output marker is outside of the visible region, save | |
5141 | the restriction and widen. */ | |
6ec8bbd2 | 5142 | if (! (BEGV <= PT && PT <= ZV)) |
b0310da4 JB |
5143 | Fwiden (); |
5144 | ||
ed7a4b2d KH |
5145 | text = decode_coding_string (make_unibyte_string (chars, nbytes), |
5146 | coding, 0); | |
082a1df2 | 5147 | Vlast_coding_system_used = coding->symbol; |
ed7a4b2d KH |
5148 | /* A new coding system might be found. See the comment in the |
5149 | similar code in the previous `if' block. */ | |
5150 | if (!EQ (p->decode_coding_system, coding->symbol)) | |
5151 | { | |
5152 | p->decode_coding_system = coding->symbol; | |
5153 | if (NILP (p->encode_coding_system) | |
5154 | && proc_encode_coding_system[XINT (p->outfd)]) | |
5155 | { | |
5156 | p->encode_coding_system = coding->symbol; | |
5157 | setup_coding_system (coding->symbol, | |
5158 | proc_encode_coding_system[XINT (p->outfd)]); | |
5159 | } | |
5160 | } | |
5161 | carryover = nbytes - coding->consumed; | |
d7d2483a KS |
5162 | if (SCHARS (p->decoding_buf) < carryover) |
5163 | p->decoding_buf = make_uninit_string (carryover); | |
d5db4077 | 5164 | bcopy (chars + coding->consumed, SDATA (p->decoding_buf), |
ed7a4b2d KH |
5165 | carryover); |
5166 | XSETINT (p->decoding_carryover, carryover); | |
d69864bf KH |
5167 | /* Adjust the multibyteness of TEXT to that of the buffer. */ |
5168 | if (NILP (current_buffer->enable_multibyte_characters) | |
5169 | != ! STRING_MULTIBYTE (text)) | |
5170 | text = (STRING_MULTIBYTE (text) | |
57bb5c37 | 5171 | ? Fstring_as_unibyte (text) |
03f04413 | 5172 | : Fstring_to_multibyte (text)); |
57bb5c37 KH |
5173 | /* Insert before markers in case we are inserting where |
5174 | the buffer's mark is, and the user's next command is Meta-y. */ | |
e430e5ba KH |
5175 | insert_from_string_before_markers (text, 0, 0, |
5176 | SCHARS (text), SBYTES (text), 0); | |
0d023da1 | 5177 | |
926b7e5e GM |
5178 | /* Make sure the process marker's position is valid when the |
5179 | process buffer is changed in the signal_after_change above. | |
5180 | W3 is known to do that. */ | |
5181 | if (BUFFERP (p->buffer) | |
5182 | && (b = XBUFFER (p->buffer), b != current_buffer)) | |
5183 | set_marker_both (p->mark, p->buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
5184 | else | |
5185 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); | |
b0310da4 | 5186 | |
d0d6b7c5 JB |
5187 | update_mode_lines++; |
5188 | ||
12ca5cdf RS |
5189 | /* Make sure opoint and the old restrictions |
5190 | float ahead of any new text just as point would. */ | |
5191 | if (opoint >= before) | |
d8a2934e RS |
5192 | { |
5193 | opoint += PT - before; | |
5194 | opoint_byte += PT_BYTE - before_byte; | |
5195 | } | |
12ca5cdf | 5196 | if (old_begv > before) |
d8a2934e RS |
5197 | { |
5198 | old_begv += PT - before; | |
5199 | old_begv_byte += PT_BYTE - before_byte; | |
5200 | } | |
12ca5cdf | 5201 | if (old_zv >= before) |
d8a2934e RS |
5202 | { |
5203 | old_zv += PT - before; | |
5204 | old_zv_byte += PT_BYTE - before_byte; | |
5205 | } | |
12ca5cdf | 5206 | |
b0310da4 | 5207 | /* If the restriction isn't what it should be, set it. */ |
12ca5cdf RS |
5208 | if (old_begv != BEGV || old_zv != ZV) |
5209 | Fnarrow_to_region (make_number (old_begv), make_number (old_zv)); | |
b0310da4 | 5210 | |
592ce97f | 5211 | /* Handling the process output should not deactivate the mark. */ |
30c78175 RS |
5212 | Vdeactivate_mark = odeactivate; |
5213 | ||
b0310da4 | 5214 | current_buffer->read_only = old_read_only; |
d8a2934e | 5215 | SET_PT_BOTH (opoint, opoint_byte); |
d0d6b7c5 JB |
5216 | set_buffer_internal (old); |
5217 | } | |
5218 | #ifdef VMS | |
5219 | start_vms_process_read (vs); | |
5220 | #endif | |
1d2fc612 | 5221 | return nbytes; |
d0d6b7c5 JB |
5222 | } |
5223 | ||
5224 | DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p, Swaiting_for_user_input_p, | |
5225 | 0, 0, 0, | |
f3d9532b | 5226 | doc: /* Returns non-nil if Emacs is waiting for input from the user. |
fdb82f93 PJ |
5227 | This is intended for use by asynchronous process output filters and sentinels. */) |
5228 | () | |
d0d6b7c5 | 5229 | { |
8b4d685f | 5230 | return (waiting_for_user_input_p ? Qt : Qnil); |
d0d6b7c5 JB |
5231 | } |
5232 | \f | |
5233 | /* Sending data to subprocess */ | |
5234 | ||
5235 | jmp_buf send_process_frame; | |
0daad115 | 5236 | Lisp_Object process_sent_to; |
d0d6b7c5 JB |
5237 | |
5238 | SIGTYPE | |
5239 | send_process_trap () | |
5240 | { | |
333f1b6f | 5241 | SIGNAL_THREAD_CHECK (SIGPIPE); |
d0d6b7c5 JB |
5242 | #ifdef BSD4_1 |
5243 | sigrelse (SIGPIPE); | |
5244 | sigrelse (SIGALRM); | |
5245 | #endif /* BSD4_1 */ | |
c8f44005 | 5246 | sigunblock (sigmask (SIGPIPE)); |
d0d6b7c5 JB |
5247 | longjmp (send_process_frame, 1); |
5248 | } | |
5249 | ||
4556b700 RS |
5250 | /* Send some data to process PROC. |
5251 | BUF is the beginning of the data; LEN is the number of characters. | |
a92e4183 KH |
5252 | OBJECT is the Lisp object that the data comes from. If OBJECT is |
5253 | nil or t, it means that the data comes from C string. | |
0fa1789e | 5254 | |
a92e4183 KH |
5255 | If OBJECT is not nil, the data is encoded by PROC's coding-system |
5256 | for encoding before it is sent. | |
1fb0098c GM |
5257 | |
5258 | This function can evaluate Lisp code and can garbage collect. */ | |
4556b700 | 5259 | |
ff6daed3 | 5260 | static void |
4556b700 | 5261 | send_process (proc, buf, len, object) |
ecd1f654 | 5262 | volatile Lisp_Object proc; |
0daad115 GM |
5263 | unsigned char *volatile buf; |
5264 | volatile int len; | |
5265 | volatile Lisp_Object object; | |
d0d6b7c5 | 5266 | { |
ecd1f654 | 5267 | /* Use volatile to protect variables from being clobbered by longjmp. */ |
2d942bfa | 5268 | struct Lisp_Process *p = XPROCESS (proc); |
d0d6b7c5 | 5269 | int rv; |
0fa1789e | 5270 | struct coding_system *coding; |
6044e593 | 5271 | struct gcpro gcpro1; |
41c4895c | 5272 | SIGTYPE (*volatile old_sigpipe) (); |
6044e593 RS |
5273 | |
5274 | GCPRO1 (object); | |
d0d6b7c5 | 5275 | |
d0d6b7c5 | 5276 | #ifdef VMS |
d0d6b7c5 JB |
5277 | VMS_PROC_STUFF *vs, *get_vms_process_pointer(); |
5278 | #endif /* VMS */ | |
5279 | ||
2d942bfa KS |
5280 | if (! NILP (p->raw_status_low)) |
5281 | update_status (p); | |
5282 | if (! EQ (p->status, Qrun)) | |
5283 | error ("Process %s not running", SDATA (p->name)); | |
5284 | if (XINT (p->outfd) < 0) | |
5285 | error ("Output file descriptor of %s is closed", SDATA (p->name)); | |
0fa1789e | 5286 | |
2d942bfa | 5287 | coding = proc_encode_coding_system[XINT (p->outfd)]; |
486b111b KH |
5288 | Vlast_coding_system_used = coding->symbol; |
5289 | ||
ed7a4b2d KH |
5290 | if ((STRINGP (object) && STRING_MULTIBYTE (object)) |
5291 | || (BUFFERP (object) | |
a92e4183 KH |
5292 | && !NILP (XBUFFER (object)->enable_multibyte_characters)) |
5293 | || EQ (object, Qt)) | |
278bfdd6 | 5294 | { |
2d942bfa | 5295 | if (!EQ (coding->symbol, p->encode_coding_system)) |
278bfdd6 KH |
5296 | /* The coding system for encoding was changed to raw-text |
5297 | because we sent a unibyte text previously. Now we are | |
5298 | sending a multibyte text, thus we must encode it by the | |
2d942bfa KS |
5299 | original coding system specified for the current process. */ |
5300 | setup_coding_system (p->encode_coding_system, coding); | |
fbb70ad9 EZ |
5301 | /* src_multibyte should be set to 1 _after_ a call to |
5302 | setup_coding_system, since it resets src_multibyte to | |
5303 | zero. */ | |
5304 | coding->src_multibyte = 1; | |
278bfdd6 KH |
5305 | } |
5306 | else | |
5307 | { | |
a92e4183 KH |
5308 | /* For sending a unibyte text, character code conversion should |
5309 | not take place but EOL conversion should. So, setup raw-text | |
5310 | or one of the subsidiary if we have not yet done it. */ | |
5311 | if (coding->type != coding_type_raw_text) | |
5312 | { | |
5313 | if (CODING_REQUIRE_FLUSHING (coding)) | |
5314 | { | |
5315 | /* But, before changing the coding, we must flush out data. */ | |
5316 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
5317 | send_process (proc, "", 0, Qt); | |
5318 | } | |
5319 | coding->src_multibyte = 0; | |
5320 | setup_raw_text_coding_system (coding); | |
5321 | } | |
278bfdd6 | 5322 | } |
a4a37e65 KH |
5323 | coding->dst_multibyte = 0; |
5324 | ||
ed7a4b2d | 5325 | if (CODING_REQUIRE_ENCODING (coding)) |
0fa1789e KH |
5326 | { |
5327 | int require = encoding_buffer_size (coding, len); | |
0daad115 | 5328 | int from_byte = -1, from = -1, to = -1; |
0fa1789e | 5329 | |
ed7a4b2d | 5330 | if (BUFFERP (object)) |
0fa1789e | 5331 | { |
ed7a4b2d KH |
5332 | from_byte = BUF_PTR_BYTE_POS (XBUFFER (object), buf); |
5333 | from = buf_bytepos_to_charpos (XBUFFER (object), from_byte); | |
5334 | to = buf_bytepos_to_charpos (XBUFFER (object), from_byte + len); | |
5335 | } | |
5336 | else if (STRINGP (object)) | |
5337 | { | |
d5db4077 | 5338 | from_byte = buf - SDATA (object); |
ed7a4b2d KH |
5339 | from = string_byte_to_char (object, from_byte); |
5340 | to = string_byte_to_char (object, from_byte + len); | |
0fa1789e KH |
5341 | } |
5342 | ||
452294c2 GM |
5343 | if (coding->composing != COMPOSITION_DISABLED) |
5344 | { | |
5345 | if (from_byte >= 0) | |
5346 | coding_save_composition (coding, from, to, object); | |
5347 | else | |
5348 | coding->composing = COMPOSITION_DISABLED; | |
5349 | } | |
ed7a4b2d | 5350 | |
2d942bfa KS |
5351 | if (SBYTES (p->encoding_buf) < require) |
5352 | p->encoding_buf = make_uninit_string (require); | |
ed7a4b2d KH |
5353 | |
5354 | if (from_byte >= 0) | |
5355 | buf = (BUFFERP (object) | |
5356 | ? BUF_BYTE_ADDRESS (XBUFFER (object), from_byte) | |
d5db4077 | 5357 | : SDATA (object) + from_byte); |
0fa1789e | 5358 | |
2d942bfa | 5359 | object = p->encoding_buf; |
d5db4077 KR |
5360 | encode_coding (coding, (char *) buf, SDATA (object), |
5361 | len, SBYTES (object)); | |
9de36315 | 5362 | coding_free_composition_data (coding); |
e7fbaa65 | 5363 | len = coding->produced; |
d5db4077 | 5364 | buf = SDATA (object); |
0fa1789e | 5365 | } |
d0d6b7c5 JB |
5366 | |
5367 | #ifdef VMS | |
5368 | vs = get_vms_process_pointer (p->pid); | |
5369 | if (vs == 0) | |
5370 | error ("Could not find this process: %x", p->pid); | |
5371 | else if (write_to_vms_process (vs, buf, len)) | |
5372 | ; | |
0daad115 | 5373 | #else /* not VMS */ |
4556b700 RS |
5374 | |
5375 | if (pty_max_bytes == 0) | |
5376 | { | |
5377 | #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON) | |
2d942bfa | 5378 | pty_max_bytes = fpathconf (XFASTINT (p->outfd), _PC_MAX_CANON); |
4556b700 RS |
5379 | if (pty_max_bytes < 0) |
5380 | pty_max_bytes = 250; | |
5381 | #else | |
5382 | pty_max_bytes = 250; | |
5383 | #endif | |
5384 | /* Deduct one, to leave space for the eof. */ | |
5385 | pty_max_bytes--; | |
5386 | } | |
5387 | ||
0daad115 GM |
5388 | /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, |
5389 | CFLAGS="-g -O": The value of the parameter `proc' is clobbered | |
5390 | when returning with longjmp despite being declared volatile. */ | |
d0d6b7c5 | 5391 | if (!setjmp (send_process_frame)) |
0daad115 GM |
5392 | { |
5393 | process_sent_to = proc; | |
5394 | while (len > 0) | |
5395 | { | |
5396 | int this = len; | |
93b4f699 | 5397 | |
0daad115 GM |
5398 | /* Decide how much data we can send in one batch. |
5399 | Long lines need to be split into multiple batches. */ | |
2d942bfa | 5400 | if (!NILP (p->pty_flag)) |
0daad115 | 5401 | { |
c0ec53ad SM |
5402 | /* Starting this at zero is always correct when not the first |
5403 | iteration because the previous iteration ended by sending C-d. | |
0daad115 GM |
5404 | It may not be correct for the first iteration |
5405 | if a partial line was sent in a separate send_process call. | |
5406 | If that proves worth handling, we need to save linepos | |
5407 | in the process object. */ | |
5408 | int linepos = 0; | |
5409 | unsigned char *ptr = (unsigned char *) buf; | |
5410 | unsigned char *end = (unsigned char *) buf + len; | |
5411 | ||
5412 | /* Scan through this text for a line that is too long. */ | |
5413 | while (ptr != end && linepos < pty_max_bytes) | |
5414 | { | |
5415 | if (*ptr == '\n') | |
5416 | linepos = 0; | |
5417 | else | |
5418 | linepos++; | |
5419 | ptr++; | |
5420 | } | |
5421 | /* If we found one, break the line there | |
5422 | and put in a C-d to force the buffer through. */ | |
5423 | this = ptr - buf; | |
5424 | } | |
93b4f699 | 5425 | |
0daad115 GM |
5426 | /* Send this batch, using one or more write calls. */ |
5427 | while (this > 0) | |
5428 | { | |
2d942bfa | 5429 | int outfd = XINT (p->outfd); |
0daad115 | 5430 | old_sigpipe = (SIGTYPE (*) ()) signal (SIGPIPE, send_process_trap); |
e690ca94 KS |
5431 | #ifdef DATAGRAM_SOCKETS |
5432 | if (DATAGRAM_CHAN_P (outfd)) | |
5433 | { | |
5434 | rv = sendto (outfd, (char *) buf, this, | |
5435 | 0, datagram_address[outfd].sa, | |
5436 | datagram_address[outfd].len); | |
5437 | if (rv < 0 && errno == EMSGSIZE) | |
c8f44005 RS |
5438 | { |
5439 | signal (SIGPIPE, old_sigpipe); | |
5440 | report_file_error ("sending datagram", | |
5441 | Fcons (proc, Qnil)); | |
5442 | } | |
e690ca94 KS |
5443 | } |
5444 | else | |
5445 | #endif | |
2d942bfa KS |
5446 | { |
5447 | rv = emacs_write (outfd, (char *) buf, this); | |
5448 | #ifdef ADAPTIVE_READ_BUFFERING | |
5449 | if (XINT (p->read_output_delay) > 0 | |
5450 | && EQ (p->adaptive_read_buffering, Qt)) | |
5451 | { | |
5452 | XSETFASTINT (p->read_output_delay, 0); | |
5453 | process_output_delay_count--; | |
5454 | p->read_output_skip = Qnil; | |
5455 | } | |
5456 | #endif | |
5457 | } | |
0daad115 | 5458 | signal (SIGPIPE, old_sigpipe); |
4556b700 | 5459 | |
0daad115 GM |
5460 | if (rv < 0) |
5461 | { | |
5462 | if (0 | |
d0d6b7c5 | 5463 | #ifdef EWOULDBLOCK |
0daad115 | 5464 | || errno == EWOULDBLOCK |
d0d6b7c5 JB |
5465 | #endif |
5466 | #ifdef EAGAIN | |
0daad115 | 5467 | || errno == EAGAIN |
d0d6b7c5 | 5468 | #endif |
0daad115 | 5469 | ) |
177c0ea7 | 5470 | /* Buffer is full. Wait, accepting input; |
0daad115 GM |
5471 | that may allow the program |
5472 | to finish doing output and read more. */ | |
5473 | { | |
0daad115 | 5474 | int offset = 0; |
4556b700 | 5475 | |
3433b6bd | 5476 | #ifdef BROKEN_PTY_READ_AFTER_EAGAIN |
0daad115 GM |
5477 | /* A gross hack to work around a bug in FreeBSD. |
5478 | In the following sequence, read(2) returns | |
5479 | bogus data: | |
5480 | ||
5481 | write(2) 1022 bytes | |
5482 | write(2) 954 bytes, get EAGAIN | |
5483 | read(2) 1024 bytes in process_read_output | |
5484 | read(2) 11 bytes in process_read_output | |
5485 | ||
5486 | That is, read(2) returns more bytes than have | |
5487 | ever been written successfully. The 1033 bytes | |
5488 | read are the 1022 bytes written successfully | |
5489 | after processing (for example with CRs added if | |
5490 | the terminal is set up that way which it is | |
5491 | here). The same bytes will be seen again in a | |
5492 | later read(2), without the CRs. */ | |
177c0ea7 | 5493 | |
0daad115 GM |
5494 | if (errno == EAGAIN) |
5495 | { | |
5496 | int flags = FWRITE; | |
2d942bfa | 5497 | ioctl (XINT (p->outfd), TIOCFLUSH, &flags); |
0daad115 | 5498 | } |
3433b6bd | 5499 | #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */ |
177c0ea7 | 5500 | |
0daad115 GM |
5501 | /* Running filters might relocate buffers or strings. |
5502 | Arrange to relocate BUF. */ | |
5503 | if (BUFFERP (object)) | |
5504 | offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf); | |
5505 | else if (STRINGP (object)) | |
d5db4077 | 5506 | offset = buf - SDATA (object); |
0daad115 | 5507 | |
f3e6605c | 5508 | #ifdef EMACS_HAS_USECS |
214d6069 | 5509 | wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5510 | #else |
214d6069 | 5511 | wait_reading_process_output (1, 0, 0, 0, Qnil, NULL, 0); |
f3e6605c | 5512 | #endif |
4556b700 | 5513 | |
0daad115 GM |
5514 | if (BUFFERP (object)) |
5515 | buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset); | |
5516 | else if (STRINGP (object)) | |
d5db4077 | 5517 | buf = offset + SDATA (object); |
4556b700 | 5518 | |
0daad115 GM |
5519 | rv = 0; |
5520 | } | |
5521 | else | |
5522 | /* This is a real error. */ | |
5523 | report_file_error ("writing to process", Fcons (proc, Qnil)); | |
5524 | } | |
5525 | buf += rv; | |
5526 | len -= rv; | |
5527 | this -= rv; | |
5528 | } | |
f76475ad | 5529 | |
0daad115 GM |
5530 | /* If we sent just part of the string, put in an EOF |
5531 | to force it through, before we send the rest. */ | |
5532 | if (len > 0) | |
5533 | Fprocess_send_eof (proc); | |
5534 | } | |
5535 | } | |
5536 | #endif /* not VMS */ | |
d0d6b7c5 JB |
5537 | else |
5538 | { | |
0ff69270 | 5539 | signal (SIGPIPE, old_sigpipe); |
0daad115 GM |
5540 | #ifndef VMS |
5541 | proc = process_sent_to; | |
2d942bfa | 5542 | p = XPROCESS (proc); |
0daad115 | 5543 | #endif |
2d942bfa KS |
5544 | p->raw_status_low = Qnil; |
5545 | p->raw_status_high = Qnil; | |
5546 | p->status = Fcons (Qexit, Fcons (make_number (256), Qnil)); | |
5547 | XSETINT (p->tick, ++process_tick); | |
d0d6b7c5 JB |
5548 | deactivate_process (proc); |
5549 | #ifdef VMS | |
2d942bfa | 5550 | error ("Error writing to process %s; closed it", SDATA (p->name)); |
d0d6b7c5 | 5551 | #else |
2d942bfa | 5552 | error ("SIGPIPE raised on process %s; closed it", SDATA (p->name)); |
d0d6b7c5 JB |
5553 | #endif |
5554 | } | |
6044e593 RS |
5555 | |
5556 | UNGCPRO; | |
d0d6b7c5 JB |
5557 | } |
5558 | ||
5559 | DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region, | |
fdb82f93 PJ |
5560 | 3, 3, 0, |
5561 | doc: /* Send current contents of region as input to PROCESS. | |
5562 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5563 | nil, indicating the current buffer's process. | |
5564 | Called from program, takes three arguments, PROCESS, START and END. | |
5565 | If the region is more than 500 characters long, | |
5566 | it is sent in several bunches. This may happen even for shorter regions. | |
5567 | Output from processes can arrive in between bunches. */) | |
5568 | (process, start, end) | |
d0d6b7c5 JB |
5569 | Lisp_Object process, start, end; |
5570 | { | |
5571 | Lisp_Object proc; | |
d8a2934e | 5572 | int start1, end1; |
d0d6b7c5 JB |
5573 | |
5574 | proc = get_process (process); | |
5575 | validate_region (&start, &end); | |
5576 | ||
5577 | if (XINT (start) < GPT && XINT (end) > GPT) | |
4da6dec8 | 5578 | move_gap (XINT (start)); |
d0d6b7c5 | 5579 | |
d8a2934e RS |
5580 | start1 = CHAR_TO_BYTE (XINT (start)); |
5581 | end1 = CHAR_TO_BYTE (XINT (end)); | |
5582 | send_process (proc, BYTE_POS_ADDR (start1), end1 - start1, | |
4556b700 | 5583 | Fcurrent_buffer ()); |
d0d6b7c5 JB |
5584 | |
5585 | return Qnil; | |
5586 | } | |
5587 | ||
5588 | DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string, | |
fdb82f93 PJ |
5589 | 2, 2, 0, |
5590 | doc: /* Send PROCESS the contents of STRING as input. | |
5591 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
5592 | nil, indicating the current buffer's process. | |
5593 | If STRING is more than 500 characters long, | |
5594 | it is sent in several bunches. This may happen even for shorter strings. | |
5595 | Output from processes can arrive in between bunches. */) | |
5596 | (process, string) | |
d0d6b7c5 JB |
5597 | Lisp_Object process, string; |
5598 | { | |
5599 | Lisp_Object proc; | |
b7826503 | 5600 | CHECK_STRING (string); |
d0d6b7c5 | 5601 | proc = get_process (process); |
d5db4077 KR |
5602 | send_process (proc, SDATA (string), |
5603 | SBYTES (string), string); | |
d0d6b7c5 JB |
5604 | return Qnil; |
5605 | } | |
5606 | \f | |
16782258 JD |
5607 | /* Return the foreground process group for the tty/pty that |
5608 | the process P uses. */ | |
5609 | static int | |
5610 | emacs_get_tty_pgrp (p) | |
5611 | struct Lisp_Process *p; | |
5612 | { | |
5613 | int gid = -1; | |
5614 | ||
f3d9532b | 5615 | #ifdef TIOCGPGRP |
16782258 JD |
5616 | if (ioctl (XINT (p->infd), TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name)) |
5617 | { | |
5618 | int fd; | |
5619 | /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the | |
5620 | master side. Try the slave side. */ | |
5621 | fd = emacs_open (XSTRING (p->tty_name)->data, O_RDONLY, 0); | |
5622 | ||
5623 | if (fd != -1) | |
5624 | { | |
5625 | ioctl (fd, TIOCGPGRP, &gid); | |
5626 | emacs_close (fd); | |
5627 | } | |
5628 | } | |
5629 | #endif /* defined (TIOCGPGRP ) */ | |
5630 | ||
5631 | return gid; | |
5632 | } | |
5633 | ||
b81ea5ef RS |
5634 | DEFUN ("process-running-child-p", Fprocess_running_child_p, |
5635 | Sprocess_running_child_p, 0, 1, 0, | |
fdb82f93 PJ |
5636 | doc: /* Return t if PROCESS has given the terminal to a child. |
5637 | If the operating system does not make it possible to find out, | |
5638 | return t unconditionally. */) | |
5639 | (process) | |
b81ea5ef RS |
5640 | Lisp_Object process; |
5641 | { | |
5642 | /* Initialize in case ioctl doesn't exist or gives an error, | |
5643 | in a way that will cause returning t. */ | |
16782258 | 5644 | int gid; |
b81ea5ef RS |
5645 | Lisp_Object proc; |
5646 | struct Lisp_Process *p; | |
5647 | ||
5648 | proc = get_process (process); | |
5649 | p = XPROCESS (proc); | |
5650 | ||
5651 | if (!EQ (p->childp, Qt)) | |
5652 | error ("Process %s is not a subprocess", | |
d5db4077 | 5653 | SDATA (p->name)); |
b81ea5ef RS |
5654 | if (XINT (p->infd) < 0) |
5655 | error ("Process %s is not active", | |
d5db4077 | 5656 | SDATA (p->name)); |
b81ea5ef | 5657 | |
16782258 | 5658 | gid = emacs_get_tty_pgrp (p); |
b81ea5ef RS |
5659 | |
5660 | if (gid == XFASTINT (p->pid)) | |
5661 | return Qnil; | |
5662 | return Qt; | |
5663 | } | |
5664 | \f | |
d0d6b7c5 | 5665 | /* send a signal number SIGNO to PROCESS. |
b81ea5ef RS |
5666 | If CURRENT_GROUP is t, that means send to the process group |
5667 | that currently owns the terminal being used to communicate with PROCESS. | |
d0d6b7c5 | 5668 | This is used for various commands in shell mode. |
b81ea5ef RS |
5669 | If CURRENT_GROUP is lambda, that means send to the process group |
5670 | that currently owns the terminal, but only if it is NOT the shell itself. | |
5671 | ||
d0d6b7c5 | 5672 | If NOMSG is zero, insert signal-announcements into process's buffers |
b0310da4 JB |
5673 | right away. |
5674 | ||
5675 | If we can, we try to signal PROCESS by sending control characters | |
e333e864 | 5676 | down the pty. This allows us to signal inferiors who have changed |
b0310da4 | 5677 | their uid, for which killpg would return an EPERM error. */ |
d0d6b7c5 | 5678 | |
f9738840 | 5679 | static void |
d0d6b7c5 JB |
5680 | process_send_signal (process, signo, current_group, nomsg) |
5681 | Lisp_Object process; | |
5682 | int signo; | |
5683 | Lisp_Object current_group; | |
5684 | int nomsg; | |
5685 | { | |
5686 | Lisp_Object proc; | |
5687 | register struct Lisp_Process *p; | |
5688 | int gid; | |
5689 | int no_pgrp = 0; | |
5690 | ||
5691 | proc = get_process (process); | |
5692 | p = XPROCESS (proc); | |
5693 | ||
5694 | if (!EQ (p->childp, Qt)) | |
5695 | error ("Process %s is not a subprocess", | |
d5db4077 | 5696 | SDATA (p->name)); |
a9f2c884 | 5697 | if (XINT (p->infd) < 0) |
d0d6b7c5 | 5698 | error ("Process %s is not active", |
d5db4077 | 5699 | SDATA (p->name)); |
d0d6b7c5 JB |
5700 | |
5701 | if (NILP (p->pty_flag)) | |
5702 | current_group = Qnil; | |
5703 | ||
d0d6b7c5 | 5704 | /* If we are using pgrps, get a pgrp number and make it negative. */ |
2af70a0c RS |
5705 | if (NILP (current_group)) |
5706 | /* Send the signal to the shell's process group. */ | |
5707 | gid = XFASTINT (p->pid); | |
5708 | else | |
d0d6b7c5 | 5709 | { |
b0310da4 | 5710 | #ifdef SIGNALS_VIA_CHARACTERS |
d0d6b7c5 JB |
5711 | /* If possible, send signals to the entire pgrp |
5712 | by sending an input character to it. */ | |
b0310da4 | 5713 | |
6be429b1 JB |
5714 | /* TERMIOS is the latest and bestest, and seems most likely to |
5715 | work. If the system has it, use it. */ | |
5716 | #ifdef HAVE_TERMIOS | |
5717 | struct termios t; | |
7f916a36 RS |
5718 | cc_t *sig_char = NULL; |
5719 | ||
5720 | tcgetattr (XINT (p->infd), &t); | |
6be429b1 JB |
5721 | |
5722 | switch (signo) | |
5723 | { | |
5724 | case SIGINT: | |
7f916a36 RS |
5725 | sig_char = &t.c_cc[VINTR]; |
5726 | break; | |
6be429b1 JB |
5727 | |
5728 | case SIGQUIT: | |
7f916a36 RS |
5729 | sig_char = &t.c_cc[VQUIT]; |
5730 | break; | |
6be429b1 JB |
5731 | |
5732 | case SIGTSTP: | |
d0adf46f | 5733 | #if defined (VSWTCH) && !defined (PREFER_VSUSP) |
7f916a36 | 5734 | sig_char = &t.c_cc[VSWTCH]; |
6be429b1 | 5735 | #else |
7f916a36 | 5736 | sig_char = &t.c_cc[VSUSP]; |
6be429b1 | 5737 | #endif |
7f916a36 | 5738 | break; |
6be429b1 JB |
5739 | } |
5740 | ||
ca4313d5 | 5741 | if (sig_char && *sig_char != CDISABLE) |
f1c206fc RS |
5742 | { |
5743 | send_process (proc, sig_char, 1, Qnil); | |
5744 | return; | |
5745 | } | |
5746 | /* If we can't send the signal with a character, | |
5747 | fall through and send it another way. */ | |
6be429b1 JB |
5748 | #else /* ! HAVE_TERMIOS */ |
5749 | ||
b0310da4 JB |
5750 | /* On Berkeley descendants, the following IOCTL's retrieve the |
5751 | current control characters. */ | |
d0d6b7c5 | 5752 | #if defined (TIOCGLTC) && defined (TIOCGETC) |
b0310da4 | 5753 | |
d0d6b7c5 JB |
5754 | struct tchars c; |
5755 | struct ltchars lc; | |
5756 | ||
5757 | switch (signo) | |
5758 | { | |
5759 | case SIGINT: | |
a9f2c884 | 5760 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5761 | send_process (proc, &c.t_intrc, 1, Qnil); |
f9738840 | 5762 | return; |
d0d6b7c5 | 5763 | case SIGQUIT: |
a9f2c884 | 5764 | ioctl (XINT (p->infd), TIOCGETC, &c); |
4556b700 | 5765 | send_process (proc, &c.t_quitc, 1, Qnil); |
f9738840 | 5766 | return; |
0ad77c54 | 5767 | #ifdef SIGTSTP |
d0d6b7c5 | 5768 | case SIGTSTP: |
a9f2c884 | 5769 | ioctl (XINT (p->infd), TIOCGLTC, &lc); |
4556b700 | 5770 | send_process (proc, &lc.t_suspc, 1, Qnil); |
f9738840 | 5771 | return; |
b0310da4 | 5772 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5773 | } |
b0310da4 JB |
5774 | |
5775 | #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
5776 | ||
5777 | /* On SYSV descendants, the TCGETA ioctl retrieves the current control | |
5778 | characters. */ | |
5779 | #ifdef TCGETA | |
d0d6b7c5 JB |
5780 | struct termio t; |
5781 | switch (signo) | |
5782 | { | |
5783 | case SIGINT: | |
a9f2c884 | 5784 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5785 | send_process (proc, &t.c_cc[VINTR], 1, Qnil); |
f9738840 | 5786 | return; |
d0d6b7c5 | 5787 | case SIGQUIT: |
a9f2c884 | 5788 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5789 | send_process (proc, &t.c_cc[VQUIT], 1, Qnil); |
f9738840 | 5790 | return; |
7d79e3b4 | 5791 | #ifdef SIGTSTP |
d0d6b7c5 | 5792 | case SIGTSTP: |
a9f2c884 | 5793 | ioctl (XINT (p->infd), TCGETA, &t); |
4556b700 | 5794 | send_process (proc, &t.c_cc[VSWTCH], 1, Qnil); |
f9738840 | 5795 | return; |
b0310da4 | 5796 | #endif /* ! defined (SIGTSTP) */ |
d0d6b7c5 | 5797 | } |
b0310da4 JB |
5798 | #else /* ! defined (TCGETA) */ |
5799 | Your configuration files are messed up. | |
5800 | /* If your system configuration files define SIGNALS_VIA_CHARACTERS, | |
5801 | you'd better be using one of the alternatives above! */ | |
5802 | #endif /* ! defined (TCGETA) */ | |
5803 | #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */ | |
f1c206fc | 5804 | /* In this case, the code above should alway returns. */ |
20505336 | 5805 | abort (); |
f1c206fc RS |
5806 | #endif /* ! defined HAVE_TERMIOS */ |
5807 | ||
5808 | /* The code above may fall through if it can't | |
5809 | handle the signal. */ | |
20505336 | 5810 | #endif /* defined (SIGNALS_VIA_CHARACTERS) */ |
d0d6b7c5 | 5811 | |
177c0ea7 | 5812 | #ifdef TIOCGPGRP |
2af70a0c | 5813 | /* Get the current pgrp using the tty itself, if we have that. |
d0d6b7c5 JB |
5814 | Otherwise, use the pty to get the pgrp. |
5815 | On pfa systems, saka@pfu.fujitsu.co.JP writes: | |
b0310da4 JB |
5816 | "TIOCGPGRP symbol defined in sys/ioctl.h at E50. |
5817 | But, TIOCGPGRP does not work on E50 ;-P works fine on E60" | |
d0d6b7c5 JB |
5818 | His patch indicates that if TIOCGPGRP returns an error, then |
5819 | we should just assume that p->pid is also the process group id. */ | |
d0d6b7c5 | 5820 | |
16782258 | 5821 | gid = emacs_get_tty_pgrp (p); |
f3d9532b | 5822 | |
16782258 JD |
5823 | if (gid == -1) |
5824 | /* If we can't get the information, assume | |
5825 | the shell owns the tty. */ | |
5826 | gid = XFASTINT (p->pid); | |
2af70a0c RS |
5827 | |
5828 | /* It is not clear whether anything really can set GID to -1. | |
5829 | Perhaps on some system one of those ioctls can or could do so. | |
5830 | Or perhaps this is vestigial. */ | |
d0d6b7c5 JB |
5831 | if (gid == -1) |
5832 | no_pgrp = 1; | |
b0310da4 | 5833 | #else /* ! defined (TIOCGPGRP ) */ |
301c3fe4 JB |
5834 | /* Can't select pgrps on this system, so we know that |
5835 | the child itself heads the pgrp. */ | |
2af70a0c | 5836 | gid = XFASTINT (p->pid); |
301c3fe4 | 5837 | #endif /* ! defined (TIOCGPGRP ) */ |
b81ea5ef RS |
5838 | |
5839 | /* If current_group is lambda, and the shell owns the terminal, | |
5840 | don't send any signal. */ | |
2af70a0c | 5841 | if (EQ (current_group, Qlambda) && gid == XFASTINT (p->pid)) |
b81ea5ef | 5842 | return; |
d0d6b7c5 | 5843 | } |
d0d6b7c5 JB |
5844 | |
5845 | switch (signo) | |
5846 | { | |
5847 | #ifdef SIGCONT | |
5848 | case SIGCONT: | |
5849 | p->raw_status_low = Qnil; | |
5850 | p->raw_status_high = Qnil; | |
5851 | p->status = Qrun; | |
5852 | XSETINT (p->tick, ++process_tick); | |
5853 | if (!nomsg) | |
ff6daed3 | 5854 | status_notify (NULL); |
d0d6b7c5 | 5855 | break; |
301c3fe4 | 5856 | #endif /* ! defined (SIGCONT) */ |
d0d6b7c5 JB |
5857 | case SIGINT: |
5858 | #ifdef VMS | |
4556b700 | 5859 | send_process (proc, "\003", 1, Qnil); /* ^C */ |
d0d6b7c5 JB |
5860 | goto whoosh; |
5861 | #endif | |
5862 | case SIGQUIT: | |
5863 | #ifdef VMS | |
4556b700 | 5864 | send_process (proc, "\031", 1, Qnil); /* ^Y */ |
d0d6b7c5 JB |
5865 | goto whoosh; |
5866 | #endif | |
5867 | case SIGKILL: | |
5868 | #ifdef VMS | |
5869 | sys$forcex (&(XFASTINT (p->pid)), 0, 1); | |
5870 | whoosh: | |
5871 | #endif | |
a9f2c884 | 5872 | flush_pending_output (XINT (p->infd)); |
d0d6b7c5 JB |
5873 | break; |
5874 | } | |
5875 | ||
5876 | /* If we don't have process groups, send the signal to the immediate | |
5877 | subprocess. That isn't really right, but it's better than any | |
5878 | obvious alternative. */ | |
5879 | if (no_pgrp) | |
5880 | { | |
5881 | kill (XFASTINT (p->pid), signo); | |
5882 | return; | |
5883 | } | |
5884 | ||
5885 | /* gid may be a pid, or minus a pgrp's number */ | |
5886 | #ifdef TIOCSIGSEND | |
5887 | if (!NILP (current_group)) | |
16782258 JD |
5888 | { |
5889 | if (ioctl (XINT (p->infd), TIOCSIGSEND, signo) == -1) | |
5890 | EMACS_KILLPG (gid, signo); | |
5891 | } | |
d0d6b7c5 JB |
5892 | else |
5893 | { | |
5894 | gid = - XFASTINT (p->pid); | |
5895 | kill (gid, signo); | |
5896 | } | |
301c3fe4 | 5897 | #else /* ! defined (TIOCSIGSEND) */ |
2af70a0c | 5898 | EMACS_KILLPG (gid, signo); |
301c3fe4 | 5899 | #endif /* ! defined (TIOCSIGSEND) */ |
d0d6b7c5 JB |
5900 | } |
5901 | ||
5902 | DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0, | |
fdb82f93 PJ |
5903 | doc: /* Interrupt process PROCESS. |
5904 | PROCESS may be a process, a buffer, or the name of a process or buffer. | |
f3d9532b | 5905 | No arg or nil means current buffer's process. |
fdb82f93 PJ |
5906 | Second arg CURRENT-GROUP non-nil means send signal to |
5907 | the current process-group of the process's controlling terminal | |
5908 | rather than to the process's own process group. | |
5909 | If the process is a shell, this means interrupt current subjob | |
5910 | rather than the shell. | |
5911 | ||
5912 | If CURRENT-GROUP is `lambda', and if the shell owns the terminal, | |
5913 | don't send the signal. */) | |
5914 | (process, current_group) | |
d0d6b7c5 JB |
5915 | Lisp_Object process, current_group; |
5916 | { | |
5917 | process_send_signal (process, SIGINT, current_group, 0); | |
5918 | return process; | |
5919 | } | |
5920 | ||
5921 | DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0, | |
fdb82f93 PJ |
5922 | doc: /* Kill process PROCESS. May be process or name of one. |
5923 | See function `interrupt-process' for more details on usage. */) | |
5924 | (process, current_group) | |
d0d6b7c5 JB |
5925 | Lisp_Object process, current_group; |
5926 | { | |
5927 | process_send_signal (process, SIGKILL, current_group, 0); | |
5928 | return process; | |
5929 | } | |
5930 | ||
5931 | DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0, | |
fdb82f93 PJ |
5932 | doc: /* Send QUIT signal to process PROCESS. May be process or name of one. |
5933 | See function `interrupt-process' for more details on usage. */) | |
5934 | (process, current_group) | |
d0d6b7c5 JB |
5935 | Lisp_Object process, current_group; |
5936 | { | |
5937 | process_send_signal (process, SIGQUIT, current_group, 0); | |
5938 | return process; | |
5939 | } | |
5940 | ||
5941 | DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0, | |
fdb82f93 | 5942 | doc: /* Stop process PROCESS. May be process or name of one. |
177c0ea7 | 5943 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5944 | If PROCESS is a network process, inhibit handling of incoming traffic. */) |
fdb82f93 | 5945 | (process, current_group) |
d0d6b7c5 JB |
5946 | Lisp_Object process, current_group; |
5947 | { | |
e690ca94 KS |
5948 | #ifdef HAVE_SOCKETS |
5949 | if (PROCESSP (process) && NETCONN_P (process)) | |
5950 | { | |
5951 | struct Lisp_Process *p; | |
177c0ea7 | 5952 | |
e690ca94 KS |
5953 | p = XPROCESS (process); |
5954 | if (NILP (p->command) | |
5955 | && XINT (p->infd) >= 0) | |
5956 | { | |
5957 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
5958 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
5959 | } | |
5960 | p->command = Qt; | |
5961 | return process; | |
5962 | } | |
5963 | #endif | |
d0d6b7c5 | 5964 | #ifndef SIGTSTP |
a9a73d6c | 5965 | error ("No SIGTSTP support"); |
d0d6b7c5 JB |
5966 | #else |
5967 | process_send_signal (process, SIGTSTP, current_group, 0); | |
5968 | #endif | |
5969 | return process; | |
5970 | } | |
5971 | ||
5972 | DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0, | |
fdb82f93 | 5973 | doc: /* Continue process PROCESS. May be process or name of one. |
177c0ea7 | 5974 | See function `interrupt-process' for more details on usage. |
e690ca94 | 5975 | If PROCESS is a network process, resume handling of incoming traffic. */) |
fdb82f93 | 5976 | (process, current_group) |
d0d6b7c5 JB |
5977 | Lisp_Object process, current_group; |
5978 | { | |
e690ca94 KS |
5979 | #ifdef HAVE_SOCKETS |
5980 | if (PROCESSP (process) && NETCONN_P (process)) | |
5981 | { | |
5982 | struct Lisp_Process *p; | |
5983 | ||
5984 | p = XPROCESS (process); | |
5985 | if (EQ (p->command, Qt) | |
5986 | && XINT (p->infd) >= 0 | |
5987 | && (!EQ (p->filter, Qt) || EQ (p->status, Qlisten))) | |
5988 | { | |
5989 | FD_SET (XINT (p->infd), &input_wait_mask); | |
5990 | FD_SET (XINT (p->infd), &non_keyboard_wait_mask); | |
5991 | } | |
5992 | p->command = Qnil; | |
5993 | return process; | |
5994 | } | |
5995 | #endif | |
d0d6b7c5 JB |
5996 | #ifdef SIGCONT |
5997 | process_send_signal (process, SIGCONT, current_group, 0); | |
5998 | #else | |
a9a73d6c | 5999 | error ("No SIGCONT support"); |
d0d6b7c5 JB |
6000 | #endif |
6001 | return process; | |
6002 | } | |
6003 | ||
6004 | DEFUN ("signal-process", Fsignal_process, Ssignal_process, | |
cdd5ea86 KS |
6005 | 2, 2, "sProcess (name or number): \nnSignal code: ", |
6006 | doc: /* Send PROCESS the signal with code SIGCODE. | |
6007 | PROCESS may also be an integer specifying the process id of the | |
6008 | process to signal; in this case, the process need not be a child of | |
6009 | this Emacs. | |
fdb82f93 | 6010 | SIGCODE may be an integer, or a symbol whose name is a signal name. */) |
cdd5ea86 KS |
6011 | (process, sigcode) |
6012 | Lisp_Object process, sigcode; | |
d0d6b7c5 | 6013 | { |
cdd5ea86 KS |
6014 | Lisp_Object pid; |
6015 | ||
6016 | if (INTEGERP (process)) | |
6017 | { | |
6018 | pid = process; | |
6019 | goto got_it; | |
6020 | } | |
6021 | ||
6022 | if (STRINGP (process)) | |
6023 | { | |
6024 | Lisp_Object tem; | |
6025 | if (tem = Fget_process (process), NILP (tem)) | |
6026 | { | |
6027 | pid = Fstring_to_number (process, make_number (10)); | |
6028 | if (XINT (pid) != 0) | |
6029 | goto got_it; | |
6030 | } | |
6031 | process = tem; | |
6032 | } | |
6033 | else | |
6034 | process = get_process (process); | |
177c0ea7 | 6035 | |
cdd5ea86 KS |
6036 | if (NILP (process)) |
6037 | return process; | |
6038 | ||
6039 | CHECK_PROCESS (process); | |
6040 | pid = XPROCESS (process)->pid; | |
6041 | if (!INTEGERP (pid) || XINT (pid) <= 0) | |
6042 | error ("Cannot signal process %s", SDATA (XPROCESS (process)->name)); | |
6043 | ||
6044 | got_it: | |
4766242d RS |
6045 | |
6046 | #define handle_signal(NAME, VALUE) \ | |
6047 | else if (!strcmp (name, NAME)) \ | |
6048 | XSETINT (sigcode, VALUE) | |
6049 | ||
6050 | if (INTEGERP (sigcode)) | |
6051 | ; | |
6052 | else | |
6053 | { | |
6054 | unsigned char *name; | |
6055 | ||
b7826503 | 6056 | CHECK_SYMBOL (sigcode); |
d5db4077 | 6057 | name = SDATA (SYMBOL_NAME (sigcode)); |
4766242d | 6058 | |
675984ed KS |
6059 | if (!strncmp(name, "SIG", 3)) |
6060 | name += 3; | |
6061 | ||
4766242d RS |
6062 | if (0) |
6063 | ; | |
6064 | #ifdef SIGHUP | |
675984ed | 6065 | handle_signal ("HUP", SIGHUP); |
4766242d RS |
6066 | #endif |
6067 | #ifdef SIGINT | |
675984ed | 6068 | handle_signal ("INT", SIGINT); |
4766242d RS |
6069 | #endif |
6070 | #ifdef SIGQUIT | |
675984ed | 6071 | handle_signal ("QUIT", SIGQUIT); |
4766242d RS |
6072 | #endif |
6073 | #ifdef SIGILL | |
675984ed | 6074 | handle_signal ("ILL", SIGILL); |
4766242d RS |
6075 | #endif |
6076 | #ifdef SIGABRT | |
675984ed | 6077 | handle_signal ("ABRT", SIGABRT); |
4766242d RS |
6078 | #endif |
6079 | #ifdef SIGEMT | |
675984ed | 6080 | handle_signal ("EMT", SIGEMT); |
4766242d RS |
6081 | #endif |
6082 | #ifdef SIGKILL | |
675984ed | 6083 | handle_signal ("KILL", SIGKILL); |
4766242d RS |
6084 | #endif |
6085 | #ifdef SIGFPE | |
675984ed | 6086 | handle_signal ("FPE", SIGFPE); |
4766242d RS |
6087 | #endif |
6088 | #ifdef SIGBUS | |
675984ed | 6089 | handle_signal ("BUS", SIGBUS); |
4766242d RS |
6090 | #endif |
6091 | #ifdef SIGSEGV | |
675984ed | 6092 | handle_signal ("SEGV", SIGSEGV); |
4766242d RS |
6093 | #endif |
6094 | #ifdef SIGSYS | |
675984ed | 6095 | handle_signal ("SYS", SIGSYS); |
4766242d RS |
6096 | #endif |
6097 | #ifdef SIGPIPE | |
675984ed | 6098 | handle_signal ("PIPE", SIGPIPE); |
4766242d RS |
6099 | #endif |
6100 | #ifdef SIGALRM | |
675984ed | 6101 | handle_signal ("ALRM", SIGALRM); |
4766242d RS |
6102 | #endif |
6103 | #ifdef SIGTERM | |
675984ed | 6104 | handle_signal ("TERM", SIGTERM); |
4766242d RS |
6105 | #endif |
6106 | #ifdef SIGURG | |
675984ed | 6107 | handle_signal ("URG", SIGURG); |
4766242d RS |
6108 | #endif |
6109 | #ifdef SIGSTOP | |
675984ed | 6110 | handle_signal ("STOP", SIGSTOP); |
4766242d RS |
6111 | #endif |
6112 | #ifdef SIGTSTP | |
675984ed | 6113 | handle_signal ("TSTP", SIGTSTP); |
4766242d RS |
6114 | #endif |
6115 | #ifdef SIGCONT | |
675984ed | 6116 | handle_signal ("CONT", SIGCONT); |
4766242d RS |
6117 | #endif |
6118 | #ifdef SIGCHLD | |
675984ed | 6119 | handle_signal ("CHLD", SIGCHLD); |
4766242d RS |
6120 | #endif |
6121 | #ifdef SIGTTIN | |
675984ed | 6122 | handle_signal ("TTIN", SIGTTIN); |
4766242d RS |
6123 | #endif |
6124 | #ifdef SIGTTOU | |
675984ed | 6125 | handle_signal ("TTOU", SIGTTOU); |
4766242d RS |
6126 | #endif |
6127 | #ifdef SIGIO | |
675984ed | 6128 | handle_signal ("IO", SIGIO); |
4766242d RS |
6129 | #endif |
6130 | #ifdef SIGXCPU | |
675984ed | 6131 | handle_signal ("XCPU", SIGXCPU); |
4766242d RS |
6132 | #endif |
6133 | #ifdef SIGXFSZ | |
675984ed | 6134 | handle_signal ("XFSZ", SIGXFSZ); |
4766242d RS |
6135 | #endif |
6136 | #ifdef SIGVTALRM | |
675984ed | 6137 | handle_signal ("VTALRM", SIGVTALRM); |
4766242d RS |
6138 | #endif |
6139 | #ifdef SIGPROF | |
675984ed | 6140 | handle_signal ("PROF", SIGPROF); |
4766242d RS |
6141 | #endif |
6142 | #ifdef SIGWINCH | |
675984ed | 6143 | handle_signal ("WINCH", SIGWINCH); |
4766242d RS |
6144 | #endif |
6145 | #ifdef SIGINFO | |
675984ed | 6146 | handle_signal ("INFO", SIGINFO); |
4766242d RS |
6147 | #endif |
6148 | #ifdef SIGUSR1 | |
675984ed | 6149 | handle_signal ("USR1", SIGUSR1); |
4766242d RS |
6150 | #endif |
6151 | #ifdef SIGUSR2 | |
675984ed | 6152 | handle_signal ("USR2", SIGUSR2); |
4766242d RS |
6153 | #endif |
6154 | else | |
9fa195a2 | 6155 | error ("Undefined signal name %s", name); |
4766242d RS |
6156 | } |
6157 | ||
6158 | #undef handle_signal | |
6159 | ||
4766242d | 6160 | return make_number (kill (XINT (pid), XINT (sigcode))); |
d0d6b7c5 JB |
6161 | } |
6162 | ||
6163 | DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0, | |
fdb82f93 PJ |
6164 | doc: /* Make PROCESS see end-of-file in its input. |
6165 | EOF comes after any text already sent to it. | |
6166 | PROCESS may be a process, a buffer, the name of a process or buffer, or | |
6167 | nil, indicating the current buffer's process. | |
6168 | If PROCESS is a network connection, or is a process communicating | |
6169 | through a pipe (as opposed to a pty), then you cannot send any more | |
6170 | text to PROCESS after you call this function. */) | |
6171 | (process) | |
d0d6b7c5 JB |
6172 | Lisp_Object process; |
6173 | { | |
6174 | Lisp_Object proc; | |
de7fbd09 | 6175 | struct coding_system *coding; |
d0d6b7c5 | 6176 | |
e690ca94 KS |
6177 | if (DATAGRAM_CONN_P (process)) |
6178 | return process; | |
6179 | ||
d0d6b7c5 | 6180 | proc = get_process (process); |
de7fbd09 | 6181 | coding = proc_encode_coding_system[XINT (XPROCESS (proc)->outfd)]; |
577d03d5 RS |
6182 | |
6183 | /* Make sure the process is really alive. */ | |
6184 | if (! NILP (XPROCESS (proc)->raw_status_low)) | |
6185 | update_status (XPROCESS (proc)); | |
6186 | if (! EQ (XPROCESS (proc)->status, Qrun)) | |
d5db4077 | 6187 | error ("Process %s not running", SDATA (XPROCESS (proc)->name)); |
577d03d5 | 6188 | |
de7fbd09 KH |
6189 | if (CODING_REQUIRE_FLUSHING (coding)) |
6190 | { | |
6191 | coding->mode |= CODING_MODE_LAST_BLOCK; | |
6192 | send_process (proc, "", 0, Qnil); | |
6193 | } | |
6194 | ||
d0d6b7c5 | 6195 | #ifdef VMS |
4556b700 | 6196 | send_process (proc, "\032", 1, Qnil); /* ^z */ |
d0d6b7c5 JB |
6197 | #else |
6198 | if (!NILP (XPROCESS (proc)->pty_flag)) | |
4556b700 | 6199 | send_process (proc, "\004", 1, Qnil); |
d0d6b7c5 JB |
6200 | else |
6201 | { | |
4525f571 RS |
6202 | int old_outfd, new_outfd; |
6203 | ||
93853f3d | 6204 | #ifdef HAVE_SHUTDOWN |
02f55c4b RS |
6205 | /* If this is a network connection, or socketpair is used |
6206 | for communication with the subprocess, call shutdown to cause EOF. | |
6207 | (In some old system, shutdown to socketpair doesn't work. | |
6208 | Then we just can't win.) */ | |
6209 | if (NILP (XPROCESS (proc)->pid) | |
6210 | || XINT (XPROCESS (proc)->outfd) == XINT (XPROCESS (proc)->infd)) | |
6211 | shutdown (XINT (XPROCESS (proc)->outfd), 1); | |
6212 | /* In case of socketpair, outfd == infd, so don't close it. */ | |
6213 | if (XINT (XPROCESS (proc)->outfd) != XINT (XPROCESS (proc)->infd)) | |
68c45bf0 | 6214 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6215 | #else /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6216 | emacs_close (XINT (XPROCESS (proc)->outfd)); |
93853f3d | 6217 | #endif /* not HAVE_SHUTDOWN */ |
68c45bf0 | 6218 | new_outfd = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
4525f571 RS |
6219 | old_outfd = XINT (XPROCESS (proc)->outfd); |
6220 | ||
6221 | if (!proc_encode_coding_system[new_outfd]) | |
6222 | proc_encode_coding_system[new_outfd] | |
6223 | = (struct coding_system *) xmalloc (sizeof (struct coding_system)); | |
6224 | bcopy (proc_encode_coding_system[old_outfd], | |
6225 | proc_encode_coding_system[new_outfd], | |
6226 | sizeof (struct coding_system)); | |
6227 | bzero (proc_encode_coding_system[old_outfd], | |
6228 | sizeof (struct coding_system)); | |
6229 | ||
6230 | XSETINT (XPROCESS (proc)->outfd, new_outfd); | |
d0d6b7c5 JB |
6231 | } |
6232 | #endif /* VMS */ | |
d0d6b7c5 JB |
6233 | return process; |
6234 | } | |
6235 | ||
6236 | /* Kill all processes associated with `buffer'. | |
3fed8ad5 | 6237 | If `buffer' is nil, kill all processes */ |
d0d6b7c5 | 6238 | |
6b53bb85 | 6239 | void |
d0d6b7c5 JB |
6240 | kill_buffer_processes (buffer) |
6241 | Lisp_Object buffer; | |
6242 | { | |
6243 | Lisp_Object tail, proc; | |
6244 | ||
70949dac | 6245 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6246 | { |
70949dac | 6247 | proc = XCDR (XCAR (tail)); |
b5b502d6 | 6248 | if (GC_PROCESSP (proc) |
d0d6b7c5 JB |
6249 | && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer))) |
6250 | { | |
6251 | if (NETCONN_P (proc)) | |
e1ab4959 | 6252 | Fdelete_process (proc); |
a9f2c884 | 6253 | else if (XINT (XPROCESS (proc)->infd) >= 0) |
d0d6b7c5 JB |
6254 | process_send_signal (proc, SIGHUP, Qnil, 1); |
6255 | } | |
6256 | } | |
6257 | } | |
6258 | \f | |
3fed8ad5 GM |
6259 | /* On receipt of a signal that a child status has changed, loop asking |
6260 | about children with changed statuses until the system says there | |
6261 | are no more. | |
177c0ea7 | 6262 | |
3fed8ad5 GM |
6263 | All we do is change the status; we do not run sentinels or print |
6264 | notifications. That is saved for the next time keyboard input is | |
6265 | done, in order to avoid timing errors. | |
6266 | ||
6267 | ** WARNING: this can be called during garbage collection. | |
6268 | Therefore, it must not be fooled by the presence of mark bits in | |
6269 | Lisp objects. | |
6270 | ||
6271 | ** USG WARNING: Although it is not obvious from the documentation | |
6272 | in signal(2), on a USG system the SIGCLD handler MUST NOT call | |
6273 | signal() before executing at least one wait(), otherwise the | |
6274 | handler will be called again, resulting in an infinite loop. The | |
6275 | relevant portion of the documentation reads "SIGCLD signals will be | |
6276 | queued and the signal-catching function will be continually | |
6277 | reentered until the queue is empty". Invoking signal() causes the | |
6278 | kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems | |
ce38070a JD |
6279 | Inc. |
6280 | ||
6281 | ** Malloc WARNING: This should never call malloc either directly or | |
6282 | indirectly; if it does, that is a bug */ | |
d0d6b7c5 JB |
6283 | |
6284 | SIGTYPE | |
6285 | sigchld_handler (signo) | |
6286 | int signo; | |
6287 | { | |
6288 | int old_errno = errno; | |
6289 | Lisp_Object proc; | |
6290 | register struct Lisp_Process *p; | |
6be429b1 | 6291 | extern EMACS_TIME *input_available_clear_time; |
d0d6b7c5 | 6292 | |
333f1b6f JD |
6293 | SIGNAL_THREAD_CHECK (signo); |
6294 | ||
d0d6b7c5 JB |
6295 | #ifdef BSD4_1 |
6296 | extern int sigheld; | |
6297 | sigheld |= sigbit (SIGCHLD); | |
6298 | #endif | |
6299 | ||
6300 | while (1) | |
6301 | { | |
6302 | register int pid; | |
6303 | WAITTYPE w; | |
6304 | Lisp_Object tail; | |
6305 | ||
6306 | #ifdef WNOHANG | |
6307 | #ifndef WUNTRACED | |
6308 | #define WUNTRACED 0 | |
6309 | #endif /* no WUNTRACED */ | |
6310 | /* Keep trying to get a status until we get a definitive result. */ | |
177c0ea7 | 6311 | do |
d0d6b7c5 JB |
6312 | { |
6313 | errno = 0; | |
6314 | pid = wait3 (&w, WNOHANG | WUNTRACED, 0); | |
6315 | } | |
3fed8ad5 | 6316 | while (pid < 0 && errno == EINTR); |
d0d6b7c5 JB |
6317 | |
6318 | if (pid <= 0) | |
6319 | { | |
3fed8ad5 GM |
6320 | /* PID == 0 means no processes found, PID == -1 means a real |
6321 | failure. We have done all our job, so return. */ | |
d0d6b7c5 JB |
6322 | |
6323 | /* USG systems forget handlers when they are used; | |
6324 | must reestablish each time */ | |
3c0ee47b | 6325 | #if defined (USG) && !defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6326 | signal (signo, sigchld_handler); /* WARNING - must come after wait3() */ |
6327 | #endif | |
6328 | #ifdef BSD4_1 | |
6329 | sigheld &= ~sigbit (SIGCHLD); | |
6330 | sigrelse (SIGCHLD); | |
6331 | #endif | |
6332 | errno = old_errno; | |
6333 | return; | |
6334 | } | |
6335 | #else | |
6336 | pid = wait (&w); | |
6337 | #endif /* no WNOHANG */ | |
6338 | ||
6339 | /* Find the process that signaled us, and record its status. */ | |
6340 | ||
6341 | p = 0; | |
3fed8ad5 | 6342 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6343 | { |
70949dac | 6344 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6345 | p = XPROCESS (proc); |
3fed8ad5 | 6346 | if (GC_EQ (p->childp, Qt) && XINT (p->pid) == pid) |
d0d6b7c5 JB |
6347 | break; |
6348 | p = 0; | |
6349 | } | |
6350 | ||
6351 | /* Look for an asynchronous process whose pid hasn't been filled | |
6352 | in yet. */ | |
6353 | if (p == 0) | |
3fed8ad5 | 6354 | for (tail = Vprocess_alist; GC_CONSP (tail); tail = XCDR (tail)) |
d0d6b7c5 | 6355 | { |
70949dac | 6356 | proc = XCDR (XCAR (tail)); |
d0d6b7c5 | 6357 | p = XPROCESS (proc); |
3fed8ad5 | 6358 | if (GC_INTEGERP (p->pid) && XINT (p->pid) == -1) |
d0d6b7c5 JB |
6359 | break; |
6360 | p = 0; | |
6361 | } | |
177c0ea7 | 6362 | |
d0d6b7c5 JB |
6363 | /* Change the status of the process that was found. */ |
6364 | if (p != 0) | |
6365 | { | |
6366 | union { int i; WAITTYPE wt; } u; | |
e98d950b | 6367 | int clear_desc_flag = 0; |
177c0ea7 | 6368 | |
d0d6b7c5 JB |
6369 | XSETINT (p->tick, ++process_tick); |
6370 | u.wt = w; | |
5fc0154c RS |
6371 | XSETINT (p->raw_status_low, u.i & 0xffff); |
6372 | XSETINT (p->raw_status_high, u.i >> 16); | |
177c0ea7 | 6373 | |
d0d6b7c5 | 6374 | /* If process has terminated, stop waiting for its output. */ |
e98d950b RS |
6375 | if ((WIFSIGNALED (w) || WIFEXITED (w)) |
6376 | && XINT (p->infd) >= 0) | |
6377 | clear_desc_flag = 1; | |
6378 | ||
6379 | /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */ | |
6380 | if (clear_desc_flag) | |
6381 | { | |
6382 | FD_CLR (XINT (p->infd), &input_wait_mask); | |
6383 | FD_CLR (XINT (p->infd), &non_keyboard_wait_mask); | |
6384 | } | |
6be429b1 | 6385 | |
214d6069 | 6386 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6387 | look around. */ |
6388 | if (input_available_clear_time) | |
6389 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6390 | } |
6391 | ||
6392 | /* There was no asynchronous process found for that id. Check | |
6393 | if we have a synchronous process. */ | |
6394 | else | |
6395 | { | |
6396 | synch_process_alive = 0; | |
6397 | ||
6398 | /* Report the status of the synchronous process. */ | |
6399 | if (WIFEXITED (w)) | |
6400 | synch_process_retcode = WRETCODE (w); | |
6401 | else if (WIFSIGNALED (w)) | |
c22aeff8 | 6402 | synch_process_termsig = WTERMSIG (w); |
6be429b1 | 6403 | |
214d6069 | 6404 | /* Tell wait_reading_process_output that it needs to wake up and |
6be429b1 JB |
6405 | look around. */ |
6406 | if (input_available_clear_time) | |
6407 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
d0d6b7c5 JB |
6408 | } |
6409 | ||
6410 | /* On some systems, we must return right away. | |
6411 | If any more processes want to signal us, we will | |
6412 | get another signal. | |
6413 | Otherwise (on systems that have WNOHANG), loop around | |
6414 | to use up all the processes that have something to tell us. */ | |
4e6277d8 | 6415 | #if (defined WINDOWSNT \ |
8a2a6032 | 6416 | || (defined USG && !defined GNU_LINUX \ |
4e6277d8 | 6417 | && !(defined HPUX && defined WNOHANG))) |
3c0ee47b | 6418 | #if defined (USG) && ! defined (POSIX_SIGNALS) |
d0d6b7c5 JB |
6419 | signal (signo, sigchld_handler); |
6420 | #endif | |
6421 | errno = old_errno; | |
6422 | return; | |
6423 | #endif /* USG, but not HPUX with WNOHANG */ | |
6424 | } | |
6425 | } | |
6426 | \f | |
6427 | ||
6428 | static Lisp_Object | |
6429 | exec_sentinel_unwind (data) | |
6430 | Lisp_Object data; | |
6431 | { | |
70949dac | 6432 | XPROCESS (XCAR (data))->sentinel = XCDR (data); |
d0d6b7c5 JB |
6433 | return Qnil; |
6434 | } | |
6435 | ||
3b9a3dfa RS |
6436 | static Lisp_Object |
6437 | exec_sentinel_error_handler (error) | |
6438 | Lisp_Object error; | |
6439 | { | |
6440 | cmd_error_internal (error, "error in process sentinel: "); | |
6441 | Vinhibit_quit = Qt; | |
6442 | update_echo_area (); | |
833ba342 | 6443 | Fsleep_for (make_number (2), Qnil); |
8c983bf2 | 6444 | return Qt; |
3b9a3dfa RS |
6445 | } |
6446 | ||
d0d6b7c5 JB |
6447 | static void |
6448 | exec_sentinel (proc, reason) | |
6449 | Lisp_Object proc, reason; | |
6450 | { | |
dfc21838 | 6451 | Lisp_Object sentinel, obuffer, odeactivate, okeymap; |
d0d6b7c5 | 6452 | register struct Lisp_Process *p = XPROCESS (proc); |
aed13378 | 6453 | int count = SPECPDL_INDEX (); |
4da2f5be | 6454 | int outer_running_asynch_code = running_asynch_code; |
bbce7d72 | 6455 | int waiting = waiting_for_user_input_p; |
d0d6b7c5 | 6456 | |
dfc21838 RS |
6457 | /* No need to gcpro these, because all we do with them later |
6458 | is test them for EQness, and none of them should be a string. */ | |
8fb3cf64 | 6459 | odeactivate = Vdeactivate_mark; |
dfc21838 RS |
6460 | XSETBUFFER (obuffer, current_buffer); |
6461 | okeymap = current_buffer->keymap; | |
6462 | ||
d0d6b7c5 JB |
6463 | sentinel = p->sentinel; |
6464 | if (NILP (sentinel)) | |
6465 | return; | |
6466 | ||
6467 | /* Zilch the sentinel while it's running, to avoid recursive invocations; | |
6468 | assure that it gets restored no matter how the sentinel exits. */ | |
6469 | p->sentinel = Qnil; | |
6470 | record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel)); | |
6471 | /* Inhibit quit so that random quits don't screw up a running filter. */ | |
6472 | specbind (Qinhibit_quit, Qt); | |
6545aada | 6473 | specbind (Qlast_nonmenu_event, Qt); |
3b9a3dfa | 6474 | |
4da2f5be RS |
6475 | /* In case we get recursively called, |
6476 | and we already saved the match data nonrecursively, | |
6477 | save the same match data in safely recursive fashion. */ | |
6478 | if (outer_running_asynch_code) | |
6479 | { | |
6480 | Lisp_Object tem; | |
89f2614d KS |
6481 | tem = Fmatch_data (Qnil, Qnil, Qnil); |
6482 | restore_search_regs (); | |
6483 | record_unwind_save_match_data (); | |
6484 | Fset_match_data (tem, Qt); | |
4da2f5be RS |
6485 | } |
6486 | ||
6487 | /* For speed, if a search happens within this code, | |
6488 | save the match data in a special nonrecursive fashion. */ | |
7074fde6 | 6489 | running_asynch_code = 1; |
4da2f5be | 6490 | |
3b9a3dfa RS |
6491 | internal_condition_case_1 (read_process_output_call, |
6492 | Fcons (sentinel, | |
6493 | Fcons (proc, Fcons (reason, Qnil))), | |
6494 | !NILP (Vdebug_on_error) ? Qnil : Qerror, | |
6495 | exec_sentinel_error_handler); | |
4da2f5be RS |
6496 | |
6497 | /* If we saved the match data nonrecursively, restore it now. */ | |
89f2614d | 6498 | restore_search_regs (); |
4da2f5be | 6499 | running_asynch_code = outer_running_asynch_code; |
8fb3cf64 KH |
6500 | |
6501 | Vdeactivate_mark = odeactivate; | |
bbce7d72 RS |
6502 | |
6503 | /* Restore waiting_for_user_input_p as it was | |
6504 | when we were called, in case the filter clobbered it. */ | |
6505 | waiting_for_user_input_p = waiting; | |
6506 | ||
7973cfa8 | 6507 | #if 0 |
dfc21838 RS |
6508 | if (! EQ (Fcurrent_buffer (), obuffer) |
6509 | || ! EQ (current_buffer->keymap, okeymap)) | |
7973cfa8 | 6510 | #endif |
927e08be RS |
6511 | /* But do it only if the caller is actually going to read events. |
6512 | Otherwise there's no need to make him wake up, and it could | |
6513 | cause trouble (for example it would make Fsit_for return). */ | |
6514 | if (waiting_for_user_input_p == -1) | |
6515 | record_asynch_buffer_change (); | |
8fb3cf64 | 6516 | |
2ea6d561 | 6517 | unbind_to (count, Qnil); |
d0d6b7c5 JB |
6518 | } |
6519 | ||
6520 | /* Report all recent events of a change in process status | |
6521 | (either run the sentinel or output a message). | |
b50fe468 RS |
6522 | This is usually done while Emacs is waiting for keyboard input |
6523 | but can be done at other times. */ | |
d0d6b7c5 | 6524 | |
ff6daed3 KS |
6525 | static void |
6526 | status_notify (deleting_process) | |
6527 | struct Lisp_Process *deleting_process; | |
d0d6b7c5 JB |
6528 | { |
6529 | register Lisp_Object proc, buffer; | |
2e4149a8 | 6530 | Lisp_Object tail, msg; |
d0d6b7c5 JB |
6531 | struct gcpro gcpro1, gcpro2; |
6532 | ||
2e4149a8 KH |
6533 | tail = Qnil; |
6534 | msg = Qnil; | |
d0d6b7c5 JB |
6535 | /* We need to gcpro tail; if read_process_output calls a filter |
6536 | which deletes a process and removes the cons to which tail points | |
6537 | from Vprocess_alist, and then causes a GC, tail is an unprotected | |
6538 | reference. */ | |
6539 | GCPRO2 (tail, msg); | |
6540 | ||
30623085 RS |
6541 | /* Set this now, so that if new processes are created by sentinels |
6542 | that we run, we get called again to handle their status changes. */ | |
6543 | update_tick = process_tick; | |
6544 | ||
6545 | for (tail = Vprocess_alist; !NILP (tail); tail = Fcdr (tail)) | |
d0d6b7c5 | 6546 | { |
30623085 RS |
6547 | Lisp_Object symbol; |
6548 | register struct Lisp_Process *p; | |
6549 | ||
6550 | proc = Fcdr (Fcar (tail)); | |
6551 | p = XPROCESS (proc); | |
6552 | ||
6553 | if (XINT (p->tick) != XINT (p->update_tick)) | |
d0d6b7c5 | 6554 | { |
30623085 | 6555 | XSETINT (p->update_tick, XINT (p->tick)); |
d0d6b7c5 | 6556 | |
30623085 | 6557 | /* If process is still active, read any output that remains. */ |
4da2f5be | 6558 | while (! EQ (p->filter, Qt) |
dd2a17ab | 6559 | && ! EQ (p->status, Qconnect) |
e690ca94 KS |
6560 | && ! EQ (p->status, Qlisten) |
6561 | && ! EQ (p->command, Qt) /* Network process not stopped. */ | |
4da2f5be | 6562 | && XINT (p->infd) >= 0 |
ff6daed3 | 6563 | && p != deleting_process |
4da2f5be | 6564 | && read_process_output (proc, XINT (p->infd)) > 0); |
d0d6b7c5 | 6565 | |
30623085 | 6566 | buffer = p->buffer; |
d0d6b7c5 | 6567 | |
30623085 RS |
6568 | /* Get the text to use for the message. */ |
6569 | if (!NILP (p->raw_status_low)) | |
6570 | update_status (p); | |
116c423c | 6571 | msg = status_message (p); |
d0d6b7c5 | 6572 | |
30623085 RS |
6573 | /* If process is terminated, deactivate it or delete it. */ |
6574 | symbol = p->status; | |
6575 | if (CONSP (p->status)) | |
70949dac | 6576 | symbol = XCAR (p->status); |
d0d6b7c5 | 6577 | |
30623085 RS |
6578 | if (EQ (symbol, Qsignal) || EQ (symbol, Qexit) |
6579 | || EQ (symbol, Qclosed)) | |
6580 | { | |
6581 | if (delete_exited_processes) | |
6582 | remove_process (proc); | |
6583 | else | |
6584 | deactivate_process (proc); | |
6585 | } | |
d0d6b7c5 | 6586 | |
0ad61fe7 RS |
6587 | /* The actions above may have further incremented p->tick. |
6588 | So set p->update_tick again | |
6589 | so that an error in the sentinel will not cause | |
6590 | this code to be run again. */ | |
6591 | XSETINT (p->update_tick, XINT (p->tick)); | |
30623085 RS |
6592 | /* Now output the message suitably. */ |
6593 | if (!NILP (p->sentinel)) | |
6594 | exec_sentinel (proc, msg); | |
6595 | /* Don't bother with a message in the buffer | |
6596 | when a process becomes runnable. */ | |
6597 | else if (!EQ (symbol, Qrun) && !NILP (buffer)) | |
6598 | { | |
6599 | Lisp_Object ro, tem; | |
6600 | struct buffer *old = current_buffer; | |
d8a2934e RS |
6601 | int opoint, opoint_byte; |
6602 | int before, before_byte; | |
2e4149a8 | 6603 | |
30623085 | 6604 | ro = XBUFFER (buffer)->read_only; |
d0d6b7c5 | 6605 | |
30623085 RS |
6606 | /* Avoid error if buffer is deleted |
6607 | (probably that's why the process is dead, too) */ | |
6608 | if (NILP (XBUFFER (buffer)->name)) | |
6609 | continue; | |
6610 | Fset_buffer (buffer); | |
12ca5cdf | 6611 | |
6ec8bbd2 | 6612 | opoint = PT; |
d8a2934e | 6613 | opoint_byte = PT_BYTE; |
30623085 RS |
6614 | /* Insert new output into buffer |
6615 | at the current end-of-output marker, | |
6616 | thus preserving logical ordering of input and output. */ | |
6617 | if (XMARKER (p->mark)->buffer) | |
d8a2934e | 6618 | Fgoto_char (p->mark); |
30623085 | 6619 | else |
d8a2934e | 6620 | SET_PT_BOTH (ZV, ZV_BYTE); |
12ca5cdf RS |
6621 | |
6622 | before = PT; | |
d8a2934e | 6623 | before_byte = PT_BYTE; |
30623085 RS |
6624 | |
6625 | tem = current_buffer->read_only; | |
6626 | current_buffer->read_only = Qnil; | |
6627 | insert_string ("\nProcess "); | |
6628 | Finsert (1, &p->name); | |
6629 | insert_string (" "); | |
6630 | Finsert (1, &msg); | |
6631 | current_buffer->read_only = tem; | |
d8a2934e | 6632 | set_marker_both (p->mark, p->buffer, PT, PT_BYTE); |
30623085 | 6633 | |
12ca5cdf | 6634 | if (opoint >= before) |
d8a2934e RS |
6635 | SET_PT_BOTH (opoint + (PT - before), |
6636 | opoint_byte + (PT_BYTE - before_byte)); | |
12ca5cdf | 6637 | else |
d8a2934e | 6638 | SET_PT_BOTH (opoint, opoint_byte); |
12ca5cdf | 6639 | |
30623085 | 6640 | set_buffer_internal (old); |
d0d6b7c5 | 6641 | } |
30623085 RS |
6642 | } |
6643 | } /* end for */ | |
d0d6b7c5 JB |
6644 | |
6645 | update_mode_lines++; /* in case buffers use %s in mode-line-format */ | |
3007ebfb | 6646 | redisplay_preserve_echo_area (13); |
d0d6b7c5 | 6647 | |
d0d6b7c5 JB |
6648 | UNGCPRO; |
6649 | } | |
0fa1789e KH |
6650 | |
6651 | \f | |
6652 | DEFUN ("set-process-coding-system", Fset_process_coding_system, | |
6653 | Sset_process_coding_system, 1, 3, 0, | |
fdb82f93 PJ |
6654 | doc: /* Set coding systems of PROCESS to DECODING and ENCODING. |
6655 | DECODING will be used to decode subprocess output and ENCODING to | |
6656 | encode subprocess input. */) | |
f3d9532b JB |
6657 | (process, decoding, encoding) |
6658 | register Lisp_Object process, decoding, encoding; | |
0fa1789e KH |
6659 | { |
6660 | register struct Lisp_Process *p; | |
6661 | ||
f3d9532b JB |
6662 | CHECK_PROCESS (process); |
6663 | p = XPROCESS (process); | |
0fa1789e | 6664 | if (XINT (p->infd) < 0) |
d5db4077 | 6665 | error ("Input file descriptor of %s closed", SDATA (p->name)); |
0fa1789e | 6666 | if (XINT (p->outfd) < 0) |
d5db4077 | 6667 | error ("Output file descriptor of %s closed", SDATA (p->name)); |
03f04413 KH |
6668 | Fcheck_coding_system (decoding); |
6669 | Fcheck_coding_system (encoding); | |
0fa1789e | 6670 | |
03f04413 KH |
6671 | p->decode_coding_system = decoding; |
6672 | p->encode_coding_system = encoding; | |
f3d9532b | 6673 | setup_process_coding_systems (process); |
0fa1789e KH |
6674 | |
6675 | return Qnil; | |
6676 | } | |
6677 | ||
6678 | DEFUN ("process-coding-system", | |
6679 | Fprocess_coding_system, Sprocess_coding_system, 1, 1, 0, | |
fdb82f93 | 6680 | doc: /* Return a cons of coding systems for decoding and encoding of PROCESS. */) |
f3d9532b JB |
6681 | (process) |
6682 | register Lisp_Object process; | |
0fa1789e | 6683 | { |
f3d9532b JB |
6684 | CHECK_PROCESS (process); |
6685 | return Fcons (XPROCESS (process)->decode_coding_system, | |
6686 | XPROCESS (process)->encode_coding_system); | |
0fa1789e | 6687 | } |
03f04413 KH |
6688 | |
6689 | DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte, | |
6690 | Sset_process_filter_multibyte, 2, 2, 0, | |
7392e23c KS |
6691 | doc: /* Set multibyteness of the strings given to PROCESS's filter. |
6692 | If FLAG is non-nil, the filter is given multibyte strings. | |
6693 | If FLAG is nil, the filter is given unibyte strings. In this case, | |
03f04413 KH |
6694 | all character code conversion except for end-of-line conversion is |
6695 | suppressed. */) | |
f3d9532b JB |
6696 | (process, flag) |
6697 | Lisp_Object process, flag; | |
03f04413 KH |
6698 | { |
6699 | register struct Lisp_Process *p; | |
6700 | ||
f3d9532b JB |
6701 | CHECK_PROCESS (process); |
6702 | p = XPROCESS (process); | |
03f04413 | 6703 | p->filter_multibyte = flag; |
f3d9532b | 6704 | setup_process_coding_systems (process); |
03f04413 KH |
6705 | |
6706 | return Qnil; | |
6707 | } | |
6708 | ||
6709 | DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p, | |
6710 | Sprocess_filter_multibyte_p, 1, 1, 0, | |
6711 | doc: /* Return t if a multibyte string is given to PROCESS's filter.*/) | |
f3d9532b JB |
6712 | (process) |
6713 | Lisp_Object process; | |
03f04413 KH |
6714 | { |
6715 | register struct Lisp_Process *p; | |
6716 | ||
f3d9532b JB |
6717 | CHECK_PROCESS (process); |
6718 | p = XPROCESS (process); | |
03f04413 KH |
6719 | |
6720 | return (NILP (p->filter_multibyte) ? Qnil : Qt); | |
6721 | } | |
6722 | ||
6723 | ||
d0d6b7c5 | 6724 | \f |
a69281ff RS |
6725 | /* The first time this is called, assume keyboard input comes from DESC |
6726 | instead of from where we used to expect it. | |
6727 | Subsequent calls mean assume input keyboard can come from DESC | |
6728 | in addition to other places. */ | |
6729 | ||
6730 | static int add_keyboard_wait_descriptor_called_flag; | |
6731 | ||
6732 | void | |
6733 | add_keyboard_wait_descriptor (desc) | |
6734 | int desc; | |
6735 | { | |
6736 | if (! add_keyboard_wait_descriptor_called_flag) | |
6737 | FD_CLR (0, &input_wait_mask); | |
6738 | add_keyboard_wait_descriptor_called_flag = 1; | |
6739 | FD_SET (desc, &input_wait_mask); | |
b5dc1c83 | 6740 | FD_SET (desc, &non_process_wait_mask); |
a69281ff RS |
6741 | if (desc > max_keyboard_desc) |
6742 | max_keyboard_desc = desc; | |
6743 | } | |
6744 | ||
6745 | /* From now on, do not expect DESC to give keyboard input. */ | |
6746 | ||
6747 | void | |
6748 | delete_keyboard_wait_descriptor (desc) | |
6749 | int desc; | |
6750 | { | |
6751 | int fd; | |
6752 | int lim = max_keyboard_desc; | |
6753 | ||
6754 | FD_CLR (desc, &input_wait_mask); | |
b5dc1c83 | 6755 | FD_CLR (desc, &non_process_wait_mask); |
a69281ff RS |
6756 | |
6757 | if (desc == max_keyboard_desc) | |
6758 | for (fd = 0; fd < lim; fd++) | |
6759 | if (FD_ISSET (fd, &input_wait_mask) | |
6760 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6761 | max_keyboard_desc = fd; | |
6762 | } | |
6763 | ||
6764 | /* Return nonzero if *MASK has a bit set | |
6765 | that corresponds to one of the keyboard input descriptors. */ | |
6766 | ||
ff6daed3 | 6767 | static int |
a69281ff RS |
6768 | keyboard_bit_set (mask) |
6769 | SELECT_TYPE *mask; | |
6770 | { | |
6771 | int fd; | |
6772 | ||
ee8e09af | 6773 | for (fd = 0; fd <= max_keyboard_desc; fd++) |
a69281ff RS |
6774 | if (FD_ISSET (fd, mask) && FD_ISSET (fd, &input_wait_mask) |
6775 | && !FD_ISSET (fd, &non_keyboard_wait_mask)) | |
6776 | return 1; | |
6777 | ||
6778 | return 0; | |
6779 | } | |
6780 | \f | |
dfcf069d | 6781 | void |
d0d6b7c5 JB |
6782 | init_process () |
6783 | { | |
6784 | register int i; | |
6785 | ||
6786 | #ifdef SIGCHLD | |
6787 | #ifndef CANNOT_DUMP | |
6788 | if (! noninteractive || initialized) | |
6789 | #endif | |
6790 | signal (SIGCHLD, sigchld_handler); | |
6791 | #endif | |
6792 | ||
6793 | FD_ZERO (&input_wait_mask); | |
a69281ff | 6794 | FD_ZERO (&non_keyboard_wait_mask); |
b5dc1c83 | 6795 | FD_ZERO (&non_process_wait_mask); |
7d0e672e | 6796 | max_process_desc = 0; |
dd2281ae | 6797 | |
bad49fc7 KS |
6798 | #ifdef NON_BLOCKING_CONNECT |
6799 | FD_ZERO (&connect_wait_mask); | |
6800 | num_pending_connects = 0; | |
6801 | #endif | |
6802 | ||
2d942bfa KS |
6803 | #ifdef ADAPTIVE_READ_BUFFERING |
6804 | process_output_delay_count = 0; | |
6805 | process_output_skip = 0; | |
6806 | #endif | |
6807 | ||
a69281ff | 6808 | FD_SET (0, &input_wait_mask); |
dd2281ae | 6809 | |
d0d6b7c5 JB |
6810 | Vprocess_alist = Qnil; |
6811 | for (i = 0; i < MAXDESC; i++) | |
6812 | { | |
6813 | chan_process[i] = Qnil; | |
6814 | proc_buffered_char[i] = -1; | |
6815 | } | |
c7580538 KH |
6816 | bzero (proc_decode_coding_system, sizeof proc_decode_coding_system); |
6817 | bzero (proc_encode_coding_system, sizeof proc_encode_coding_system); | |
e690ca94 KS |
6818 | #ifdef DATAGRAM_SOCKETS |
6819 | bzero (datagram_address, sizeof datagram_address); | |
6820 | #endif | |
9057ff80 | 6821 | |
c2bd2c26 KS |
6822 | #ifdef HAVE_SOCKETS |
6823 | { | |
6824 | Lisp_Object subfeatures = Qnil; | |
2ccf3102 KS |
6825 | struct socket_options *sopt; |
6826 | ||
9057ff80 KS |
6827 | #define ADD_SUBFEATURE(key, val) \ |
6828 | subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures) | |
6829 | ||
9057ff80 | 6830 | #ifdef NON_BLOCKING_CONNECT |
c2bd2c26 | 6831 | ADD_SUBFEATURE (QCnowait, Qt); |
9057ff80 KS |
6832 | #endif |
6833 | #ifdef DATAGRAM_SOCKETS | |
c2bd2c26 | 6834 | ADD_SUBFEATURE (QCtype, Qdatagram); |
9057ff80 KS |
6835 | #endif |
6836 | #ifdef HAVE_LOCAL_SOCKETS | |
c2bd2c26 | 6837 | ADD_SUBFEATURE (QCfamily, Qlocal); |
e1652a86 KS |
6838 | #endif |
6839 | ADD_SUBFEATURE (QCfamily, Qipv4); | |
6840 | #ifdef AF_INET6 | |
6841 | ADD_SUBFEATURE (QCfamily, Qipv6); | |
9057ff80 KS |
6842 | #endif |
6843 | #ifdef HAVE_GETSOCKNAME | |
c2bd2c26 | 6844 | ADD_SUBFEATURE (QCservice, Qt); |
9057ff80 | 6845 | #endif |
a8e8ea61 | 6846 | #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY)) |
c2bd2c26 | 6847 | ADD_SUBFEATURE (QCserver, Qt); |
9057ff80 | 6848 | #endif |
2ccf3102 KS |
6849 | |
6850 | for (sopt = socket_options; sopt->name; sopt++) | |
6851 | subfeatures = Fcons (intern (sopt->name), subfeatures); | |
6852 | ||
c2bd2c26 KS |
6853 | Fprovide (intern ("make-network-process"), subfeatures); |
6854 | } | |
6855 | #endif /* HAVE_SOCKETS */ | |
d9e7c622 | 6856 | |
ecc175e2 | 6857 | #if defined (DARWIN) || defined (MAC_OSX) |
db853b7a | 6858 | /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive |
d9e7c622 ST |
6859 | processes. As such, we only change the default value. */ |
6860 | if (initialized) | |
6861 | { | |
6862 | char *release = get_operating_system_release(); | |
6863 | if (!release || !release[0] || (release[0] < MIN_PTY_KERNEL_VERSION | |
6864 | && release[1] == '.')) { | |
6865 | Vprocess_connection_type = Qnil; | |
6866 | } | |
6867 | } | |
6868 | #endif | |
d0d6b7c5 | 6869 | } |
312c9964 | 6870 | |
dfcf069d | 6871 | void |
d0d6b7c5 JB |
6872 | syms_of_process () |
6873 | { | |
d0d6b7c5 JB |
6874 | Qprocessp = intern ("processp"); |
6875 | staticpro (&Qprocessp); | |
6876 | Qrun = intern ("run"); | |
6877 | staticpro (&Qrun); | |
6878 | Qstop = intern ("stop"); | |
6879 | staticpro (&Qstop); | |
6880 | Qsignal = intern ("signal"); | |
6881 | staticpro (&Qsignal); | |
6882 | ||
6883 | /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it | |
6884 | here again. | |
6885 | ||
6886 | Qexit = intern ("exit"); | |
6887 | staticpro (&Qexit); */ | |
6888 | ||
6889 | Qopen = intern ("open"); | |
6890 | staticpro (&Qopen); | |
6891 | Qclosed = intern ("closed"); | |
6892 | staticpro (&Qclosed); | |
dd2a17ab KS |
6893 | Qconnect = intern ("connect"); |
6894 | staticpro (&Qconnect); | |
6895 | Qfailed = intern ("failed"); | |
6896 | staticpro (&Qfailed); | |
e690ca94 KS |
6897 | Qlisten = intern ("listen"); |
6898 | staticpro (&Qlisten); | |
6899 | Qlocal = intern ("local"); | |
6900 | staticpro (&Qlocal); | |
e1652a86 KS |
6901 | Qipv4 = intern ("ipv4"); |
6902 | staticpro (&Qipv4); | |
6903 | #ifdef AF_INET6 | |
6904 | Qipv6 = intern ("ipv6"); | |
6905 | staticpro (&Qipv6); | |
6906 | #endif | |
9057ff80 KS |
6907 | Qdatagram = intern ("datagram"); |
6908 | staticpro (&Qdatagram); | |
e690ca94 KS |
6909 | |
6910 | QCname = intern (":name"); | |
6911 | staticpro (&QCname); | |
6912 | QCbuffer = intern (":buffer"); | |
6913 | staticpro (&QCbuffer); | |
6914 | QChost = intern (":host"); | |
6915 | staticpro (&QChost); | |
6916 | QCservice = intern (":service"); | |
6917 | staticpro (&QCservice); | |
9057ff80 KS |
6918 | QCtype = intern (":type"); |
6919 | staticpro (&QCtype); | |
e690ca94 KS |
6920 | QClocal = intern (":local"); |
6921 | staticpro (&QClocal); | |
6922 | QCremote = intern (":remote"); | |
6923 | staticpro (&QCremote); | |
6924 | QCcoding = intern (":coding"); | |
6925 | staticpro (&QCcoding); | |
6926 | QCserver = intern (":server"); | |
6927 | staticpro (&QCserver); | |
e690ca94 KS |
6928 | QCnowait = intern (":nowait"); |
6929 | staticpro (&QCnowait); | |
e690ca94 KS |
6930 | QCsentinel = intern (":sentinel"); |
6931 | staticpro (&QCsentinel); | |
6932 | QClog = intern (":log"); | |
6933 | staticpro (&QClog); | |
6934 | QCnoquery = intern (":noquery"); | |
6935 | staticpro (&QCnoquery); | |
6936 | QCstop = intern (":stop"); | |
6937 | staticpro (&QCstop); | |
6938 | QCoptions = intern (":options"); | |
6939 | staticpro (&QCoptions); | |
faa7db08 KS |
6940 | QCplist = intern (":plist"); |
6941 | staticpro (&QCplist); | |
7392e23c KS |
6942 | QCfilter_multibyte = intern (":filter-multibyte"); |
6943 | staticpro (&QCfilter_multibyte); | |
177c0ea7 | 6944 | |
6545aada RS |
6945 | Qlast_nonmenu_event = intern ("last-nonmenu-event"); |
6946 | staticpro (&Qlast_nonmenu_event); | |
6947 | ||
d0d6b7c5 JB |
6948 | staticpro (&Vprocess_alist); |
6949 | ||
6950 | DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes, | |
fdb82f93 PJ |
6951 | doc: /* *Non-nil means delete processes immediately when they exit. |
6952 | nil means don't delete them until `list-processes' is run. */); | |
d0d6b7c5 JB |
6953 | |
6954 | delete_exited_processes = 1; | |
6955 | ||
6956 | DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type, | |
fdb82f93 PJ |
6957 | doc: /* Control type of device used to communicate with subprocesses. |
6958 | Values are nil to use a pipe, or t or `pty' to use a pty. | |
6959 | The value has no effect if the system has no ptys or if all ptys are busy: | |
6960 | then a pipe is used in any case. | |
6961 | The value takes effect when `start-process' is called. */); | |
d0d6b7c5 JB |
6962 | Vprocess_connection_type = Qt; |
6963 | ||
2d942bfa KS |
6964 | #ifdef ADAPTIVE_READ_BUFFERING |
6965 | DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering, | |
6966 | doc: /* If non-nil, improve receive buffering by delaying after short reads. | |
f3d9532b | 6967 | On some systems, when Emacs reads the output from a subprocess, the output data |
2d942bfa | 6968 | is read in very small blocks, potentially resulting in very poor performance. |
2de35a25 | 6969 | This behavior can be remedied to some extent by setting this variable to a |
2d942bfa | 6970 | non-nil value, as it will automatically delay reading from such processes, to |
f3d9532b | 6971 | allowing them to produce more output before Emacs tries to read it. |
2d942bfa KS |
6972 | If the value is t, the delay is reset after each write to the process; any other |
6973 | non-nil value means that the delay is not reset on write. | |
6974 | The variable takes effect when `start-process' is called. */); | |
6975 | Vprocess_adaptive_read_buffering = Qt; | |
6976 | #endif | |
6977 | ||
d0d6b7c5 JB |
6978 | defsubr (&Sprocessp); |
6979 | defsubr (&Sget_process); | |
6980 | defsubr (&Sget_buffer_process); | |
6981 | defsubr (&Sdelete_process); | |
6982 | defsubr (&Sprocess_status); | |
6983 | defsubr (&Sprocess_exit_status); | |
6984 | defsubr (&Sprocess_id); | |
6985 | defsubr (&Sprocess_name); | |
3b9a3dfa | 6986 | defsubr (&Sprocess_tty_name); |
d0d6b7c5 JB |
6987 | defsubr (&Sprocess_command); |
6988 | defsubr (&Sset_process_buffer); | |
6989 | defsubr (&Sprocess_buffer); | |
6990 | defsubr (&Sprocess_mark); | |
6991 | defsubr (&Sset_process_filter); | |
6992 | defsubr (&Sprocess_filter); | |
6993 | defsubr (&Sset_process_sentinel); | |
6994 | defsubr (&Sprocess_sentinel); | |
de282a05 | 6995 | defsubr (&Sset_process_window_size); |
52a1b894 EZ |
6996 | defsubr (&Sset_process_inherit_coding_system_flag); |
6997 | defsubr (&Sprocess_inherit_coding_system_flag); | |
e690ca94 KS |
6998 | defsubr (&Sset_process_query_on_exit_flag); |
6999 | defsubr (&Sprocess_query_on_exit_flag); | |
de282a05 | 7000 | defsubr (&Sprocess_contact); |
faa7db08 KS |
7001 | defsubr (&Sprocess_plist); |
7002 | defsubr (&Sset_process_plist); | |
d0d6b7c5 JB |
7003 | defsubr (&Slist_processes); |
7004 | defsubr (&Sprocess_list); | |
7005 | defsubr (&Sstart_process); | |
7006 | #ifdef HAVE_SOCKETS | |
2ccf3102 | 7007 | defsubr (&Sset_network_process_option); |
e690ca94 | 7008 | defsubr (&Smake_network_process); |
991234f0 | 7009 | defsubr (&Sformat_network_address); |
b8c7fd71 KS |
7010 | #endif /* HAVE_SOCKETS */ |
7011 | #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H) | |
161933c7 KS |
7012 | #ifdef SIOCGIFCONF |
7013 | defsubr (&Snetwork_interface_list); | |
7014 | #endif | |
7015 | #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS) | |
2ccf3102 | 7016 | defsubr (&Snetwork_interface_info); |
161933c7 | 7017 | #endif |
b8c7fd71 | 7018 | #endif /* HAVE_SOCKETS ... */ |
e690ca94 KS |
7019 | #ifdef DATAGRAM_SOCKETS |
7020 | defsubr (&Sprocess_datagram_address); | |
7021 | defsubr (&Sset_process_datagram_address); | |
7022 | #endif | |
d0d6b7c5 JB |
7023 | defsubr (&Saccept_process_output); |
7024 | defsubr (&Sprocess_send_region); | |
7025 | defsubr (&Sprocess_send_string); | |
7026 | defsubr (&Sinterrupt_process); | |
7027 | defsubr (&Skill_process); | |
7028 | defsubr (&Squit_process); | |
7029 | defsubr (&Sstop_process); | |
7030 | defsubr (&Scontinue_process); | |
b81ea5ef | 7031 | defsubr (&Sprocess_running_child_p); |
d0d6b7c5 JB |
7032 | defsubr (&Sprocess_send_eof); |
7033 | defsubr (&Ssignal_process); | |
7034 | defsubr (&Swaiting_for_user_input_p); | |
7035 | /* defsubr (&Sprocess_connection); */ | |
0fa1789e KH |
7036 | defsubr (&Sset_process_coding_system); |
7037 | defsubr (&Sprocess_coding_system); | |
03f04413 KH |
7038 | defsubr (&Sset_process_filter_multibyte); |
7039 | defsubr (&Sprocess_filter_multibyte_p); | |
d0d6b7c5 JB |
7040 | } |
7041 | ||
6720a7fb JB |
7042 | \f |
7043 | #else /* not subprocesses */ | |
7044 | ||
7045 | #include <sys/types.h> | |
7046 | #include <errno.h> | |
7047 | ||
7048 | #include "lisp.h" | |
7049 | #include "systime.h" | |
52a1b894 EZ |
7050 | #include "charset.h" |
7051 | #include "coding.h" | |
6720a7fb | 7052 | #include "termopts.h" |
81afb6d1 | 7053 | #include "sysselect.h" |
6720a7fb | 7054 | |
ff11dfa1 | 7055 | extern int frame_garbaged; |
6720a7fb | 7056 | |
f694e5d2 KH |
7057 | extern EMACS_TIME timer_check (); |
7058 | extern int timers_run; | |
6720a7fb | 7059 | |
9057ff80 KS |
7060 | Lisp_Object QCtype; |
7061 | ||
6720a7fb JB |
7062 | /* As described above, except assuming that there are no subprocesses: |
7063 | ||
7064 | Wait for timeout to elapse and/or keyboard input to be available. | |
7065 | ||
7066 | time_limit is: | |
7067 | timeout in seconds, or | |
7068 | zero for no limit, or | |
7069 | -1 means gobble data immediately available but don't wait for any. | |
7070 | ||
f76475ad | 7071 | read_kbd is a Lisp_Object: |
6720a7fb JB |
7072 | 0 to ignore keyboard input, or |
7073 | 1 to return when input is available, or | |
7074 | -1 means caller will actually read the input, so don't throw to | |
7075 | the quit handler. | |
b89a415a KS |
7076 | |
7077 | see full version for other parameters. We know that wait_proc will | |
7078 | always be NULL, since `subprocesses' isn't defined. | |
6720a7fb JB |
7079 | |
7080 | do_display != 0 means redisplay should be done to show subprocess | |
5164ee8e | 7081 | output that arrives. |
6720a7fb | 7082 | |
eb8c3be9 | 7083 | Return true iff we received input from any process. */ |
6720a7fb JB |
7084 | |
7085 | int | |
214d6069 KS |
7086 | wait_reading_process_output (time_limit, microsecs, read_kbd, do_display, |
7087 | wait_for_cell, wait_proc, just_wait_proc) | |
b89a415a KS |
7088 | int time_limit, microsecs, read_kbd, do_display; |
7089 | Lisp_Object wait_for_cell; | |
7090 | struct Lisp_Process *wait_proc; | |
7091 | int just_wait_proc; | |
6720a7fb | 7092 | { |
52fd88d3 | 7093 | register int nfds; |
f694e5d2 | 7094 | EMACS_TIME end_time, timeout; |
8db121c4 | 7095 | SELECT_TYPE waitchannels; |
f694e5d2 | 7096 | int xerrno; |
6720a7fb JB |
7097 | |
7098 | /* What does time_limit really mean? */ | |
7099 | if (time_limit || microsecs) | |
7100 | { | |
6720a7fb | 7101 | EMACS_GET_TIME (end_time); |
52fd88d3 | 7102 | EMACS_SET_SECS_USECS (timeout, time_limit, microsecs); |
6720a7fb JB |
7103 | EMACS_ADD_TIME (end_time, end_time, timeout); |
7104 | } | |
6720a7fb JB |
7105 | |
7106 | /* Turn off periodic alarms (in case they are in use) | |
75eb23f1 | 7107 | and then turn off any other atimers, |
6720a7fb | 7108 | because the select emulator uses alarms. */ |
75eb23f1 | 7109 | stop_polling (); |
30904ab7 | 7110 | turn_on_atimers (0); |
6720a7fb | 7111 | |
52fd88d3 | 7112 | while (1) |
6720a7fb | 7113 | { |
bae8d137 | 7114 | int timeout_reduced_for_timers = 0; |
6720a7fb | 7115 | |
6720a7fb JB |
7116 | /* If calling from keyboard input, do not quit |
7117 | since we want to return C-g as an input character. | |
7118 | Otherwise, do pending quit if requested. */ | |
b89a415a | 7119 | if (read_kbd >= 0) |
6720a7fb JB |
7120 | QUIT; |
7121 | ||
0a65b032 | 7122 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7123 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 RS |
7124 | break; |
7125 | ||
bae8d137 RS |
7126 | /* Compute time from now till when time limit is up */ |
7127 | /* Exit if already run out */ | |
52fd88d3 EZ |
7128 | if (time_limit == -1) |
7129 | { | |
7130 | /* -1 specified for timeout means | |
7131 | gobble output available now | |
7132 | but don't wait at all. */ | |
7133 | ||
7134 | EMACS_SET_SECS_USECS (timeout, 0, 0); | |
7135 | } | |
7136 | else if (time_limit || microsecs) | |
6720a7fb | 7137 | { |
f694e5d2 KH |
7138 | EMACS_GET_TIME (timeout); |
7139 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
7140 | if (EMACS_TIME_NEG_P (timeout)) | |
6720a7fb JB |
7141 | break; |
7142 | } | |
52fd88d3 EZ |
7143 | else |
7144 | { | |
7145 | EMACS_SET_SECS_USECS (timeout, 100000, 0); | |
7146 | } | |
6720a7fb | 7147 | |
bae8d137 RS |
7148 | /* If our caller will not immediately handle keyboard events, |
7149 | run timer events directly. | |
7150 | (Callers that will immediately read keyboard events | |
7151 | call timer_delay on their own.) */ | |
f3fbd155 | 7152 | if (NILP (wait_for_cell)) |
bae8d137 RS |
7153 | { |
7154 | EMACS_TIME timer_delay; | |
0a65b032 | 7155 | |
9baacf76 | 7156 | do |
0a65b032 | 7157 | { |
9baacf76 GM |
7158 | int old_timers_run = timers_run; |
7159 | timer_delay = timer_check (1); | |
7160 | if (timers_run != old_timers_run && do_display) | |
7161 | /* We must retry, since a timer may have requeued itself | |
7162 | and that could alter the time delay. */ | |
3007ebfb | 7163 | redisplay_preserve_echo_area (14); |
9baacf76 GM |
7164 | else |
7165 | break; | |
0a65b032 | 7166 | } |
9baacf76 | 7167 | while (!detect_input_pending ()); |
0a65b032 | 7168 | |
52fd88d3 | 7169 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7170 | if (read_kbd != 0 |
52fd88d3 EZ |
7171 | && requeued_events_pending_p ()) |
7172 | break; | |
7173 | ||
f694e5d2 | 7174 | if (! EMACS_TIME_NEG_P (timer_delay) && time_limit != -1) |
bae8d137 RS |
7175 | { |
7176 | EMACS_TIME difference; | |
f694e5d2 | 7177 | EMACS_SUB_TIME (difference, timer_delay, timeout); |
bae8d137 RS |
7178 | if (EMACS_TIME_NEG_P (difference)) |
7179 | { | |
f694e5d2 | 7180 | timeout = timer_delay; |
bae8d137 RS |
7181 | timeout_reduced_for_timers = 1; |
7182 | } | |
7183 | } | |
7184 | } | |
7185 | ||
6720a7fb JB |
7186 | /* Cause C-g and alarm signals to take immediate action, |
7187 | and cause input available signals to zero out timeout. */ | |
b89a415a | 7188 | if (read_kbd < 0) |
6720a7fb JB |
7189 | set_waiting_for_input (&timeout); |
7190 | ||
0a65b032 RS |
7191 | /* Wait till there is something to do. */ |
7192 | ||
b89a415a | 7193 | if (! read_kbd && NILP (wait_for_cell)) |
0a65b032 RS |
7194 | FD_ZERO (&waitchannels); |
7195 | else | |
7196 | FD_SET (0, &waitchannels); | |
7197 | ||
ff11dfa1 | 7198 | /* If a frame has been newly mapped and needs updating, |
6720a7fb | 7199 | reprocess its display stuff. */ |
5164ee8e | 7200 | if (frame_garbaged && do_display) |
0a65b032 RS |
7201 | { |
7202 | clear_waiting_for_input (); | |
3007ebfb | 7203 | redisplay_preserve_echo_area (15); |
b89a415a | 7204 | if (read_kbd < 0) |
0a65b032 RS |
7205 | set_waiting_for_input (&timeout); |
7206 | } | |
6720a7fb | 7207 | |
b89a415a | 7208 | if (read_kbd && detect_input_pending ()) |
1861b214 RS |
7209 | { |
7210 | nfds = 0; | |
7211 | FD_ZERO (&waitchannels); | |
7212 | } | |
7213 | else | |
7214 | nfds = select (1, &waitchannels, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
7215 | &timeout); | |
f694e5d2 KH |
7216 | |
7217 | xerrno = errno; | |
6720a7fb JB |
7218 | |
7219 | /* Make C-g and alarm signals set flags again */ | |
7220 | clear_waiting_for_input (); | |
7221 | ||
7222 | /* If we woke up due to SIGWINCH, actually change size now. */ | |
2b653806 | 7223 | do_pending_window_change (0); |
6720a7fb | 7224 | |
f694e5d2 KH |
7225 | if (time_limit && nfds == 0 && ! timeout_reduced_for_timers) |
7226 | /* We waited the full specified time, so return now. */ | |
7227 | break; | |
7228 | ||
6720a7fb JB |
7229 | if (nfds == -1) |
7230 | { | |
7231 | /* If the system call was interrupted, then go around the | |
7232 | loop again. */ | |
f694e5d2 | 7233 | if (xerrno == EINTR) |
8db121c4 | 7234 | FD_ZERO (&waitchannels); |
f694e5d2 | 7235 | else |
68c45bf0 | 7236 | error ("select error: %s", emacs_strerror (xerrno)); |
6720a7fb JB |
7237 | } |
7238 | #ifdef sun | |
7239 | else if (nfds > 0 && (waitchannels & 1) && interrupt_input) | |
7240 | /* System sometimes fails to deliver SIGIO. */ | |
7241 | kill (getpid (), SIGIO); | |
7242 | #endif | |
7324d660 | 7243 | #ifdef SIGIO |
b89a415a | 7244 | if (read_kbd && interrupt_input && (waitchannels & 1)) |
e643c5be | 7245 | kill (getpid (), SIGIO); |
7324d660 | 7246 | #endif |
6720a7fb | 7247 | |
f694e5d2 KH |
7248 | /* Check for keyboard input */ |
7249 | ||
b89a415a | 7250 | if (read_kbd |
78c1afb6 | 7251 | && detect_input_pending_run_timers (do_display)) |
f694e5d2 | 7252 | { |
78c1afb6 | 7253 | swallow_events (do_display); |
f694e5d2 | 7254 | if (detect_input_pending_run_timers (do_display)) |
a2fab450 | 7255 | break; |
78c1afb6 EZ |
7256 | } |
7257 | ||
52fd88d3 | 7258 | /* If there is unread keyboard input, also return. */ |
b89a415a | 7259 | if (read_kbd |
52fd88d3 EZ |
7260 | && requeued_events_pending_p ()) |
7261 | break; | |
7262 | ||
f854a00b RS |
7263 | /* If wait_for_cell. check for keyboard input |
7264 | but don't run any timers. | |
7265 | ??? (It seems wrong to me to check for keyboard | |
7266 | input at all when wait_for_cell, but the code | |
7267 | has been this way since July 1994. | |
7268 | Try changing this after version 19.31.) */ | |
f3fbd155 | 7269 | if (! NILP (wait_for_cell) |
f854a00b RS |
7270 | && detect_input_pending ()) |
7271 | { | |
7272 | swallow_events (do_display); | |
7273 | if (detect_input_pending ()) | |
7274 | break; | |
7275 | } | |
7276 | ||
0a65b032 | 7277 | /* Exit now if the cell we're waiting for became non-nil. */ |
f3fbd155 | 7278 | if (! NILP (wait_for_cell) && ! NILP (XCAR (wait_for_cell))) |
0a65b032 | 7279 | break; |
6720a7fb JB |
7280 | } |
7281 | ||
a87b802f JB |
7282 | start_polling (); |
7283 | ||
6720a7fb JB |
7284 | return 0; |
7285 | } | |
7286 | ||
7287 | ||
e2ba787b PJ |
7288 | /* Don't confuse make-docfile by having two doc strings for this function. |
7289 | make-docfile does not pay attention to #if, for good reason! */ | |
6720a7fb | 7290 | DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0, |
fdb82f93 PJ |
7291 | 0) |
7292 | (name) | |
6720a7fb JB |
7293 | register Lisp_Object name; |
7294 | { | |
7295 | return Qnil; | |
7296 | } | |
7297 | ||
e2ba787b PJ |
7298 | /* Don't confuse make-docfile by having two doc strings for this function. |
7299 | make-docfile does not pay attention to #if, for good reason! */ | |
52a1b894 | 7300 | DEFUN ("process-inherit-coding-system-flag", |
fdb82f93 PJ |
7301 | Fprocess_inherit_coding_system_flag, Sprocess_inherit_coding_system_flag, |
7302 | 1, 1, 0, | |
7303 | 0) | |
7304 | (process) | |
52a1b894 EZ |
7305 | register Lisp_Object process; |
7306 | { | |
7307 | /* Ignore the argument and return the value of | |
7308 | inherit-process-coding-system. */ | |
7309 | return inherit_process_coding_system ? Qt : Qnil; | |
7310 | } | |
7311 | ||
6720a7fb JB |
7312 | /* Kill all processes associated with `buffer'. |
7313 | If `buffer' is nil, kill all processes. | |
7314 | Since we have no subprocesses, this does nothing. */ | |
7315 | ||
d9bb0c32 | 7316 | void |
6720a7fb JB |
7317 | kill_buffer_processes (buffer) |
7318 | Lisp_Object buffer; | |
7319 | { | |
7320 | } | |
7321 | ||
02b9b4fd | 7322 | void |
6720a7fb JB |
7323 | init_process () |
7324 | { | |
7325 | } | |
7326 | ||
02b9b4fd | 7327 | void |
6720a7fb JB |
7328 | syms_of_process () |
7329 | { | |
9057ff80 KS |
7330 | QCtype = intern (":type"); |
7331 | staticpro (&QCtype); | |
7332 | ||
6720a7fb | 7333 | defsubr (&Sget_buffer_process); |
52a1b894 | 7334 | defsubr (&Sprocess_inherit_coding_system_flag); |
6720a7fb JB |
7335 | } |
7336 | ||
7337 | \f | |
7338 | #endif /* not subprocesses */ | |
ab5796a9 MB |
7339 | |
7340 | /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4 | |
7341 | (do not change this comment) */ |