Commit | Line | Data |
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80856e74 | 1 | /* Synchronous subprocess invocation for GNU Emacs. |
f8c25f1b | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc. |
80856e74 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
826c56ac | 8 | the Free Software Foundation; either version 2, or (at your option) |
80856e74 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include <signal.h> | |
e576cab4 | 22 | #include <errno.h> |
80856e74 | 23 | |
18160b98 | 24 | #include <config.h> |
565620a5 | 25 | #include <stdio.h> |
80856e74 | 26 | |
426b37ae | 27 | extern int errno; |
826c56ac | 28 | extern char *strerror (); |
426b37ae | 29 | |
80856e74 JB |
30 | /* Define SIGCHLD as an alias for SIGCLD. */ |
31 | ||
32 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
33 | #define SIGCHLD SIGCLD | |
34 | #endif /* SIGCLD */ | |
35 | ||
36 | #include <sys/types.h> | |
88a64fef | 37 | |
80856e74 JB |
38 | #include <sys/file.h> |
39 | #ifdef USG5 | |
472e83fe | 40 | #define INCLUDED_FCNTL |
80856e74 JB |
41 | #include <fcntl.h> |
42 | #endif | |
43 | ||
bad95d8f RS |
44 | #ifdef WINDOWSNT |
45 | #define NOMINMAX | |
46 | #include <windows.h> | |
47 | #include <stdlib.h> /* for proper declaration of environ */ | |
48 | #include <fcntl.h> | |
49 | #include "nt.h" | |
50 | #define _P_NOWAIT 1 /* from process.h */ | |
51 | #endif | |
52 | ||
7e6c2178 | 53 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
00353d4f | 54 | #include "msdos.h" |
472e83fe | 55 | #define INCLUDED_FCNTL |
7e6c2178 RS |
56 | #include <fcntl.h> |
57 | #include <sys/stat.h> | |
58 | #include <sys/param.h> | |
59 | #include <errno.h> | |
60 | #endif /* MSDOS */ | |
61 | ||
80856e74 JB |
62 | #ifndef O_RDONLY |
63 | #define O_RDONLY 0 | |
64 | #endif | |
65 | ||
66 | #ifndef O_WRONLY | |
67 | #define O_WRONLY 1 | |
68 | #endif | |
69 | ||
70 | #include "lisp.h" | |
71 | #include "commands.h" | |
72 | #include "buffer.h" | |
2a6b3537 | 73 | #include <paths.h> |
80856e74 | 74 | #include "process.h" |
d177f194 | 75 | #include "syssignal.h" |
a129418f | 76 | #include "systty.h" |
80856e74 JB |
77 | |
78 | #ifdef VMS | |
79 | extern noshare char **environ; | |
80 | #else | |
81 | extern char **environ; | |
82 | #endif | |
83 | ||
84 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
85 | ||
bad95d8f | 86 | #ifdef DOS_NT |
093650fe RS |
87 | /* When we are starting external processes we need to know whether they |
88 | take binary input (no conversion) or text input (\n is converted to | |
89 | \r\n). Similar for output: if newlines are written as \r\n then it's | |
90 | text process output, otherwise it's binary. */ | |
91 | Lisp_Object Vbinary_process_input; | |
92 | Lisp_Object Vbinary_process_output; | |
bad95d8f | 93 | #endif /* DOS_NT */ |
7e6c2178 | 94 | |
35a2f4b8 | 95 | Lisp_Object Vexec_path, Vexec_directory, Vdata_directory, Vdoc_directory; |
ed61592a | 96 | Lisp_Object Vconfigure_info_directory; |
80856e74 JB |
97 | |
98 | Lisp_Object Vshell_file_name; | |
99 | ||
80856e74 | 100 | Lisp_Object Vprocess_environment; |
80856e74 | 101 | |
bad95d8f | 102 | #ifdef DOS_NT |
093650fe | 103 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 104 | #endif /* DOS_NT */ |
093650fe | 105 | |
80856e74 JB |
106 | /* True iff we are about to fork off a synchronous process or if we |
107 | are waiting for it. */ | |
108 | int synch_process_alive; | |
109 | ||
110 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
111 | char *synch_process_death; | |
112 | ||
113 | /* If synch_process_death is zero, | |
114 | this is exit code of synchronous subprocess. */ | |
115 | int synch_process_retcode; | |
8de15d69 RS |
116 | |
117 | extern Lisp_Object Vdoc_file_name; | |
80856e74 | 118 | \f |
37d54121 RS |
119 | /* Clean up when exiting Fcall_process. |
120 | On MSDOS, delete the temporary file on any kind of termination. | |
121 | On Unix, kill the process and any children on termination by signal. */ | |
122 | ||
123 | /* Nonzero if this is termination due to exit. */ | |
124 | static int call_process_exited; | |
125 | ||
80856e74 JB |
126 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
127 | ||
d177f194 JB |
128 | static Lisp_Object |
129 | call_process_kill (fdpid) | |
130 | Lisp_Object fdpid; | |
131 | { | |
132 | close (XFASTINT (Fcar (fdpid))); | |
133 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); | |
134 | synch_process_alive = 0; | |
135 | return Qnil; | |
136 | } | |
137 | ||
80856e74 JB |
138 | Lisp_Object |
139 | call_process_cleanup (fdpid) | |
140 | Lisp_Object fdpid; | |
141 | { | |
7e6c2178 RS |
142 | #ifdef MSDOS |
143 | /* for MSDOS fdpid is really (fd . tempfile) */ | |
c1350752 KH |
144 | register Lisp_Object file; |
145 | file = Fcdr (fdpid); | |
7e6c2178 RS |
146 | close (XFASTINT (Fcar (fdpid))); |
147 | if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) | |
148 | unlink (XSTRING (file)->data); | |
149 | #else /* not MSDOS */ | |
d177f194 JB |
150 | register int pid = XFASTINT (Fcdr (fdpid)); |
151 | ||
6b6e798b | 152 | |
37d54121 | 153 | if (call_process_exited) |
6b6e798b RS |
154 | { |
155 | close (XFASTINT (Fcar (fdpid))); | |
156 | return Qnil; | |
157 | } | |
37d54121 | 158 | |
d177f194 JB |
159 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
160 | { | |
161 | int count = specpdl_ptr - specpdl; | |
162 | record_unwind_protect (call_process_kill, fdpid); | |
163 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
164 | immediate_quit = 1; | |
165 | QUIT; | |
166 | wait_for_termination (pid); | |
167 | immediate_quit = 0; | |
168 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
169 | message1 ("Waiting for process to die...done"); | |
170 | } | |
80856e74 | 171 | synch_process_alive = 0; |
d177f194 | 172 | close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 173 | #endif /* not MSDOS */ |
80856e74 JB |
174 | return Qnil; |
175 | } | |
176 | ||
177 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
178 | "Call PROGRAM synchronously in separate process.\n\ | |
179 | The program's input comes from file INFILE (nil means `/dev/null').\n\ | |
180 | Insert output in BUFFER before point; t means current buffer;\n\ | |
181 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
182 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
183 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
184 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
185 | STDERR-FILE may be nil (discard standard error output),\n\ | |
186 | t (mix it with ordinary output), or a file name string.\n\ | |
187 | \n\ | |
80856e74 JB |
188 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
189 | Remaining arguments are strings passed as command arguments to PROGRAM.\n\ | |
39eaa782 RS |
190 | \n\ |
191 | If BUFFER is 0, `call-process' returns immediately with value nil.\n\ | |
192 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 193 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 194 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
195 | (nargs, args) |
196 | int nargs; | |
197 | register Lisp_Object *args; | |
198 | { | |
58616e67 | 199 | Lisp_Object infile, buffer, current_dir, display, path; |
80856e74 JB |
200 | int fd[2]; |
201 | int filefd; | |
202 | register int pid; | |
203 | char buf[1024]; | |
204 | int count = specpdl_ptr - specpdl; | |
205 | register unsigned char **new_argv | |
206 | = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
207 | struct buffer *old = current_buffer; | |
39eaa782 RS |
208 | /* File to use for stderr in the child. |
209 | t means use same as standard output. */ | |
210 | Lisp_Object error_file; | |
7e6c2178 RS |
211 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
212 | char *outf, *tempfile; | |
213 | int outfilefd; | |
214 | #endif | |
80856e74 JB |
215 | #if 0 |
216 | int mask; | |
217 | #endif | |
80856e74 JB |
218 | CHECK_STRING (args[0], 0); |
219 | ||
39eaa782 RS |
220 | error_file = Qt; |
221 | ||
7e6c2178 RS |
222 | #ifndef subprocesses |
223 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
d50d3dc8 | 224 | if (nargs >= 3 && INTEGERP (args[2])) |
7e6c2178 RS |
225 | error ("Operating system cannot handle asynchronous subprocesses"); |
226 | #endif /* subprocesses */ | |
227 | ||
e576cab4 JB |
228 | if (nargs >= 2 && ! NILP (args[1])) |
229 | { | |
230 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
231 | CHECK_STRING (infile, 1); | |
232 | } | |
80856e74 | 233 | else |
5437e9f9 | 234 | infile = build_string (NULL_DEVICE); |
80856e74 | 235 | |
e576cab4 JB |
236 | if (nargs >= 3) |
237 | { | |
39eaa782 RS |
238 | buffer = args[2]; |
239 | ||
240 | /* If BUFFER is a list, its meaning is | |
241 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
242 | if (CONSP (buffer)) | |
243 | { | |
244 | if (CONSP (XCONS (buffer)->cdr)) | |
245 | error_file = XCONS (XCONS (buffer)->cdr)->car; | |
246 | buffer = XCONS (buffer)->car; | |
247 | } | |
044512ed | 248 | |
39eaa782 RS |
249 | if (!(EQ (buffer, Qnil) |
250 | || EQ (buffer, Qt) | |
251 | || XFASTINT (buffer) == 0)) | |
e576cab4 | 252 | { |
39eaa782 RS |
253 | Lisp_Object spec_buffer; |
254 | spec_buffer = buffer; | |
255 | buffer = Fget_buffer (buffer); | |
256 | /* Mention the buffer name for a better error message. */ | |
257 | if (NILP (buffer)) | |
258 | CHECK_BUFFER (spec_buffer, 2); | |
e576cab4 JB |
259 | CHECK_BUFFER (buffer, 2); |
260 | } | |
261 | } | |
262 | else | |
263 | buffer = Qnil; | |
80856e74 | 264 | |
58616e67 JB |
265 | /* Make sure that the child will be able to chdir to the current |
266 | buffer's current directory, or its unhandled equivalent. We | |
267 | can't just have the child check for an error when it does the | |
268 | chdir, since it's in a vfork. | |
269 | ||
270 | We have to GCPRO around this because Fexpand_file_name, | |
271 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
272 | might call a file name handling function. The argument list is | |
273 | protected by the caller, so all we really have to worry about is | |
274 | buffer. */ | |
275 | { | |
276 | struct gcpro gcpro1, gcpro2, gcpro3; | |
277 | ||
278 | current_dir = current_buffer->directory; | |
279 | ||
280 | GCPRO3 (infile, buffer, current_dir); | |
281 | ||
c52b0b34 KH |
282 | current_dir |
283 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
284 | Qnil); | |
58616e67 JB |
285 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
286 | report_file_error ("Setting current directory", | |
287 | Fcons (current_buffer->directory, Qnil)); | |
288 | ||
289 | UNGCPRO; | |
290 | } | |
291 | ||
e576cab4 | 292 | display = nargs >= 4 ? args[3] : Qnil; |
80856e74 | 293 | |
e576cab4 | 294 | filefd = open (XSTRING (infile)->data, O_RDONLY, 0); |
80856e74 JB |
295 | if (filefd < 0) |
296 | { | |
e576cab4 | 297 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
298 | } |
299 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
300 | { |
301 | struct gcpro gcpro1; | |
302 | ||
303 | GCPRO1 (current_dir); | |
304 | openp (Vexec_path, args[0], EXEC_SUFFIXES, &path, 1); | |
305 | UNGCPRO; | |
306 | } | |
012c6fcb | 307 | if (NILP (path)) |
80856e74 JB |
308 | { |
309 | close (filefd); | |
310 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); | |
311 | } | |
312 | new_argv[0] = XSTRING (path)->data; | |
c52b0b34 KH |
313 | { |
314 | register int i; | |
315 | for (i = 4; i < nargs; i++) | |
316 | { | |
317 | CHECK_STRING (args[i], i); | |
318 | new_argv[i - 3] = XSTRING (args[i])->data; | |
319 | } | |
320 | new_argv[i - 3] = 0; | |
321 | } | |
80856e74 | 322 | |
7e6c2178 RS |
323 | #ifdef MSDOS /* MW, July 1993 */ |
324 | /* These vars record information from process termination. | |
325 | Clear them now before process can possibly terminate, | |
326 | to avoid timing error if process terminates soon. */ | |
327 | synch_process_death = 0; | |
328 | synch_process_retcode = 0; | |
329 | ||
330 | if ((outf = egetenv ("TMP")) || (outf = egetenv ("TEMP"))) | |
331 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); | |
332 | else | |
333 | { | |
334 | tempfile = alloca (20); | |
335 | *tempfile = '\0'; | |
336 | } | |
337 | dostounix_filename (tempfile); | |
338 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') | |
339 | strcat (tempfile, "/"); | |
340 | strcat (tempfile, "detmp.XXX"); | |
341 | mktemp (tempfile); | |
342 | ||
343 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
344 | if (outfilefd < 0) | |
345 | { | |
346 | close (filefd); | |
347 | report_file_error ("Opening process output file", Fcons (tempfile, Qnil)); | |
348 | } | |
349 | #endif | |
350 | ||
d50d3dc8 | 351 | if (INTEGERP (buffer)) |
5437e9f9 | 352 | fd[1] = open (NULL_DEVICE, O_WRONLY), fd[0] = -1; |
80856e74 JB |
353 | else |
354 | { | |
7e6c2178 | 355 | #ifndef MSDOS |
bad95d8f RS |
356 | #ifdef WINDOWSNT |
357 | pipe_with_inherited_out (fd); | |
358 | #else /* not WINDOWSNT */ | |
80856e74 | 359 | pipe (fd); |
bad95d8f | 360 | #endif /* not WINDOWSNT */ |
7e6c2178 | 361 | #endif |
80856e74 JB |
362 | #if 0 |
363 | /* Replaced by close_process_descs */ | |
364 | set_exclusive_use (fd[0]); | |
365 | #endif | |
366 | } | |
367 | ||
368 | { | |
369 | /* child_setup must clobber environ in systems with true vfork. | |
370 | Protect it from permanent change. */ | |
371 | register char **save_environ = environ; | |
372 | register int fd1 = fd[1]; | |
39eaa782 | 373 | int fd_error = fd1; |
80856e74 JB |
374 | |
375 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 376 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
377 | #endif |
378 | ||
379 | /* Record that we're about to create a synchronous process. */ | |
380 | synch_process_alive = 1; | |
381 | ||
5c03767e RS |
382 | /* These vars record information from process termination. |
383 | Clear them now before process can possibly terminate, | |
384 | to avoid timing error if process terminates soon. */ | |
385 | synch_process_death = 0; | |
386 | synch_process_retcode = 0; | |
387 | ||
7e6c2178 | 388 | #ifdef MSDOS /* MW, July 1993 */ |
6b6e798b RS |
389 | /* ??? Someone who knows MSDOG needs to check whether this properly |
390 | closes all descriptors that it opens. */ | |
7e6c2178 RS |
391 | pid = run_msdos_command (new_argv, current_dir, filefd, outfilefd); |
392 | close (outfilefd); | |
393 | fd1 = -1; /* No harm in closing that one! */ | |
093650fe | 394 | fd[0] = open (tempfile, NILP (Vbinary_process_output) ? O_TEXT : O_BINARY); |
7e6c2178 RS |
395 | if (fd[0] < 0) |
396 | { | |
397 | unlink (tempfile); | |
6b6e798b | 398 | close (filefd); |
7e6c2178 RS |
399 | report_file_error ("Cannot re-open temporary file", Qnil); |
400 | } | |
401 | #else /* not MSDOS */ | |
39eaa782 RS |
402 | |
403 | if (NILP (error_file)) | |
404 | fd_error = open (NULL_DEVICE, O_WRONLY); | |
405 | else if (STRINGP (error_file)) | |
406 | { | |
407 | #ifdef DOS_NT | |
408 | fd_error = open (XSTRING (error_file)->data, | |
409 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
410 | S_IREAD | S_IWRITE); | |
411 | #else /* not DOS_NT */ | |
412 | fd_error = creat (XSTRING (error_file)->data, 0666); | |
413 | #endif /* not DOS_NT */ | |
414 | } | |
415 | ||
416 | if (fd_error < 0) | |
417 | { | |
418 | close (filefd); | |
419 | close (fd[0]); | |
420 | if (fd1 >= 0) | |
421 | close (fd1); | |
422 | report_file_error ("Cannot open", error_file); | |
423 | } | |
424 | ||
bad95d8f | 425 | #ifdef WINDOWSNT |
39eaa782 | 426 | pid = child_setup (filefd, fd1, fd_error, new_argv, 0, current_dir); |
bad95d8f | 427 | #else /* not WINDOWSNT */ |
80856e74 JB |
428 | pid = vfork (); |
429 | ||
430 | if (pid == 0) | |
431 | { | |
432 | if (fd[0] >= 0) | |
433 | close (fd[0]); | |
5a570e37 | 434 | #ifdef USG |
80856e74 JB |
435 | setpgrp (); |
436 | #else | |
437 | setpgrp (pid, pid); | |
438 | #endif /* USG */ | |
39eaa782 | 439 | child_setup (filefd, fd1, fd_error, new_argv, 0, current_dir); |
80856e74 | 440 | } |
7e6c2178 | 441 | #endif /* not MSDOS */ |
bad95d8f | 442 | #endif /* not WINDOWSNT */ |
80856e74 | 443 | |
80856e74 JB |
444 | environ = save_environ; |
445 | ||
6b6e798b RS |
446 | /* Close most of our fd's, but not fd[0] |
447 | since we will use that to read input from. */ | |
80856e74 | 448 | close (filefd); |
7e6c2178 RS |
449 | if (fd1 >= 0) |
450 | close (fd1); | |
80856e74 JB |
451 | } |
452 | ||
453 | if (pid < 0) | |
454 | { | |
6b6e798b RS |
455 | if (fd[0] >= 0) |
456 | close (fd[0]); | |
80856e74 JB |
457 | report_file_error ("Doing vfork", Qnil); |
458 | } | |
459 | ||
d50d3dc8 | 460 | if (INTEGERP (buffer)) |
80856e74 | 461 | { |
6b6e798b RS |
462 | if (fd[0] >= 0) |
463 | close (fd[0]); | |
80856e74 | 464 | #ifndef subprocesses |
e576cab4 JB |
465 | /* If Emacs has been built with asynchronous subprocess support, |
466 | we don't need to do this, I think because it will then have | |
467 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
468 | wait_without_blocking (); |
469 | #endif /* subprocesses */ | |
80856e74 JB |
470 | return Qnil; |
471 | } | |
472 | ||
6b6e798b | 473 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
474 | call_process_exited = 0; |
475 | ||
7e6c2178 RS |
476 | #ifdef MSDOS |
477 | /* MSDOS needs different cleanup information. */ | |
478 | record_unwind_protect (call_process_cleanup, | |
479 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
480 | #else | |
80856e74 JB |
481 | record_unwind_protect (call_process_cleanup, |
482 | Fcons (make_number (fd[0]), make_number (pid))); | |
7e6c2178 | 483 | #endif /* not MSDOS */ |
80856e74 JB |
484 | |
485 | ||
d50d3dc8 | 486 | if (BUFFERP (buffer)) |
80856e74 JB |
487 | Fset_buffer (buffer); |
488 | ||
489 | immediate_quit = 1; | |
490 | QUIT; | |
491 | ||
492 | { | |
493 | register int nread; | |
0ad477db | 494 | int first = 1; |
80856e74 | 495 | |
00fb3e95 | 496 | while ((nread = read (fd[0], buf, sizeof buf)) != 0) |
80856e74 | 497 | { |
00fb3e95 RS |
498 | if (nread < 0) |
499 | { | |
500 | #if defined (__osf__) && defined (__alpha) | |
501 | continue; /* Work around bug in DEC OSF/1 V3.0. */ | |
502 | #else | |
503 | break; | |
504 | #endif | |
505 | } | |
80856e74 | 506 | immediate_quit = 0; |
012c6fcb | 507 | if (!NILP (buffer)) |
80856e74 | 508 | insert (buf, nread); |
012c6fcb | 509 | if (!NILP (display) && INTERACTIVE) |
0ad477db RS |
510 | { |
511 | if (first) | |
512 | prepare_menu_bars (); | |
513 | first = 0; | |
514 | redisplay_preserve_echo_area (); | |
515 | } | |
80856e74 JB |
516 | immediate_quit = 1; |
517 | QUIT; | |
518 | } | |
519 | } | |
520 | ||
521 | /* Wait for it to terminate, unless it already has. */ | |
522 | wait_for_termination (pid); | |
523 | ||
524 | immediate_quit = 0; | |
525 | ||
526 | set_buffer_internal (old); | |
527 | ||
37d54121 RS |
528 | /* Don't kill any children that the subprocess may have left behind |
529 | when exiting. */ | |
530 | call_process_exited = 1; | |
531 | ||
80856e74 JB |
532 | unbind_to (count, Qnil); |
533 | ||
80856e74 JB |
534 | if (synch_process_death) |
535 | return build_string (synch_process_death); | |
536 | return make_number (synch_process_retcode); | |
537 | } | |
538 | #endif | |
539 | \f | |
9fefd2ba | 540 | static Lisp_Object |
80856e74 JB |
541 | delete_temp_file (name) |
542 | Lisp_Object name; | |
543 | { | |
2e3dc201 | 544 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 545 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 546 | internal_delete_file (name); |
80856e74 JB |
547 | } |
548 | ||
549 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
550 | 3, MANY, 0, | |
551 | "Send text from START to END to a synchronous process running PROGRAM.\n\ | |
552 | Delete the text if fourth arg DELETE is non-nil.\n\ | |
39eaa782 | 553 | \n\ |
80856e74 JB |
554 | Insert output in BUFFER before point; t means current buffer;\n\ |
555 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
556 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
557 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
558 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
559 | STDERR-FILE may be nil (discard standard error output),\n\ | |
560 | t (mix it with ordinary output), or a file name string.\n\ | |
561 | \n\ | |
80856e74 JB |
562 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
563 | Remaining args are passed to PROGRAM at startup as command args.\n\ | |
39eaa782 RS |
564 | \n\ |
565 | If BUFFER is nil, `call-process-region' returns immediately with value nil.\n\ | |
566 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 567 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 568 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
569 | (nargs, args) |
570 | int nargs; | |
571 | register Lisp_Object *args; | |
572 | { | |
39323a7e KH |
573 | struct gcpro gcpro1; |
574 | Lisp_Object filename_string; | |
575 | register Lisp_Object start, end; | |
bad95d8f | 576 | #ifdef DOS_NT |
7e6c2178 RS |
577 | char *tempfile; |
578 | #else | |
80856e74 | 579 | char tempfile[20]; |
7e6c2178 | 580 | #endif |
80856e74 | 581 | int count = specpdl_ptr - specpdl; |
bad95d8f | 582 | #ifdef DOS_NT |
7e6c2178 RS |
583 | char *outf = '\0'; |
584 | ||
585 | if ((outf = egetenv ("TMP")) || (outf = egetenv ("TEMP"))) | |
586 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); | |
587 | else | |
588 | { | |
589 | tempfile = alloca (20); | |
590 | *tempfile = '\0'; | |
591 | } | |
592 | dostounix_filename (tempfile); | |
593 | if (tempfile[strlen (tempfile) - 1] != '/') | |
594 | strcat (tempfile, "/"); | |
595 | strcat (tempfile, "detmp.XXX"); | |
bad95d8f | 596 | #else /* not DOS_NT */ |
80856e74 JB |
597 | |
598 | #ifdef VMS | |
599 | strcpy (tempfile, "tmp:emacsXXXXXX."); | |
600 | #else | |
601 | strcpy (tempfile, "/tmp/emacsXXXXXX"); | |
602 | #endif | |
bad95d8f | 603 | #endif /* not DOS_NT */ |
7e6c2178 | 604 | |
80856e74 JB |
605 | mktemp (tempfile); |
606 | ||
607 | filename_string = build_string (tempfile); | |
39323a7e | 608 | GCPRO1 (filename_string); |
80856e74 JB |
609 | start = args[0]; |
610 | end = args[1]; | |
bad95d8f | 611 | #ifdef DOS_NT |
093650fe RS |
612 | specbind (Qbuffer_file_type, Vbinary_process_input); |
613 | Fwrite_region (start, end, filename_string, Qnil, Qlambda); | |
614 | unbind_to (count, Qnil); | |
bad95d8f | 615 | #else /* not DOS_NT */ |
80856e74 | 616 | Fwrite_region (start, end, filename_string, Qnil, Qlambda); |
bad95d8f | 617 | #endif /* not DOS_NT */ |
093650fe | 618 | |
80856e74 JB |
619 | record_unwind_protect (delete_temp_file, filename_string); |
620 | ||
012c6fcb | 621 | if (!NILP (args[3])) |
80856e74 JB |
622 | Fdelete_region (start, end); |
623 | ||
624 | args[3] = filename_string; | |
80856e74 | 625 | |
39323a7e | 626 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs - 2, args + 2))); |
80856e74 JB |
627 | } |
628 | \f | |
629 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
630 | ||
631 | /* This is the last thing run in a newly forked inferior | |
632 | either synchronous or asynchronous. | |
633 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
634 | Initialize inferior's priority, pgrp, connected dir and environment. | |
635 | then exec another program based on new_argv. | |
636 | ||
637 | This function may change environ for the superior process. | |
638 | Therefore, the superior process must save and restore the value | |
639 | of environ around the vfork and the call to this function. | |
640 | ||
641 | ENV is the environment for the subprocess. | |
642 | ||
643 | SET_PGRP is nonzero if we should put the subprocess into a separate | |
e576cab4 JB |
644 | process group. |
645 | ||
646 | CURRENT_DIR is an elisp string giving the path of the current | |
647 | directory the subprocess should have. Since we can't really signal | |
648 | a decent error from within the child, this should be verified as an | |
649 | executable directory by the parent. */ | |
80856e74 | 650 | |
e576cab4 | 651 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
652 | int in, out, err; |
653 | register char **new_argv; | |
80856e74 | 654 | int set_pgrp; |
e576cab4 | 655 | Lisp_Object current_dir; |
80856e74 | 656 | { |
7e6c2178 RS |
657 | #ifdef MSDOS |
658 | /* The MSDOS port of gcc cannot fork, vfork, ... so we must call system | |
659 | instead. */ | |
660 | #else /* not MSDOS */ | |
e576cab4 | 661 | char **env; |
7fcf7f05 | 662 | char *pwd_var; |
bad95d8f RS |
663 | #ifdef WINDOWSNT |
664 | int cpid; | |
665 | HANDLE handles[4]; | |
666 | #endif /* WINDOWSNT */ | |
e576cab4 | 667 | |
33abe2d9 | 668 | int pid = getpid (); |
80856e74 | 669 | |
68d10241 | 670 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 JB |
671 | { |
672 | extern int emacs_priority; | |
673 | ||
68d10241 RS |
674 | if (emacs_priority < 0) |
675 | nice (- emacs_priority); | |
4f0b9d49 | 676 | } |
5b633aeb | 677 | #endif |
80856e74 JB |
678 | |
679 | #ifdef subprocesses | |
680 | /* Close Emacs's descriptors that this process should not have. */ | |
681 | close_process_descs (); | |
682 | #endif | |
4458cebe | 683 | close_load_descs (); |
80856e74 JB |
684 | |
685 | /* Note that use of alloca is always safe here. It's obvious for systems | |
686 | that do not have true vfork or that have true (stack) alloca. | |
687 | If using vfork and C_ALLOCA it is safe because that changes | |
688 | the superior's static variables as if the superior had done alloca | |
689 | and will be cleaned up in the usual way. */ | |
e576cab4 | 690 | { |
7fcf7f05 | 691 | register char *temp; |
e576cab4 | 692 | register int i; |
77d78be1 | 693 | |
e576cab4 | 694 | i = XSTRING (current_dir)->size; |
7fcf7f05 RS |
695 | pwd_var = (char *) alloca (i + 6); |
696 | temp = pwd_var + 4; | |
697 | bcopy ("PWD=", pwd_var, 4); | |
e576cab4 | 698 | bcopy (XSTRING (current_dir)->data, temp, i); |
bad95d8f | 699 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
700 | temp[i] = 0; |
701 | ||
702 | /* We can't signal an Elisp error here; we're in a vfork. Since | |
703 | the callers check the current directory before forking, this | |
704 | should only return an error if the directory's permissions | |
705 | are changed between the check and this chdir, but we should | |
706 | at least check. */ | |
707 | if (chdir (temp) < 0) | |
20b25e46 | 708 | _exit (errno); |
7fcf7f05 RS |
709 | |
710 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ | |
bad95d8f | 711 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 712 | temp[--i] = 0; |
e576cab4 | 713 | } |
80856e74 | 714 | |
80856e74 JB |
715 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
716 | { | |
717 | register Lisp_Object tem; | |
718 | register char **new_env; | |
719 | register int new_length; | |
720 | ||
721 | new_length = 0; | |
722 | for (tem = Vprocess_environment; | |
d50d3dc8 | 723 | CONSP (tem) && STRINGP (XCONS (tem)->car); |
80856e74 JB |
724 | tem = XCONS (tem)->cdr) |
725 | new_length++; | |
726 | ||
7fcf7f05 RS |
727 | /* new_length + 2 to include PWD and terminating 0. */ |
728 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
729 | ||
730 | /* If we have a PWD envvar, pass one down, | |
731 | but with corrected value. */ | |
732 | if (getenv ("PWD")) | |
733 | *new_env++ = pwd_var; | |
80856e74 | 734 | |
cd9565ba | 735 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 736 | for (tem = Vprocess_environment; |
d50d3dc8 | 737 | CONSP (tem) && STRINGP (XCONS (tem)->car); |
80856e74 | 738 | tem = XCONS (tem)->cdr) |
cd9565ba RS |
739 | { |
740 | char **ep = env; | |
741 | char *string = (char *) XSTRING (XCONS (tem)->car)->data; | |
742 | /* See if this string duplicates any string already in the env. | |
743 | If so, don't put it in. | |
744 | When an env var has multiple definitions, | |
745 | we keep the definition that comes first in process-environment. */ | |
746 | for (; ep != new_env; ep++) | |
747 | { | |
748 | char *p = *ep, *q = string; | |
749 | while (1) | |
750 | { | |
751 | if (*q == 0) | |
752 | /* The string is malformed; might as well drop it. */ | |
753 | goto duplicate; | |
754 | if (*q != *p) | |
755 | break; | |
756 | if (*q == '=') | |
757 | goto duplicate; | |
758 | p++, q++; | |
759 | } | |
760 | } | |
761 | *new_env++ = string; | |
762 | duplicate: ; | |
763 | } | |
80856e74 JB |
764 | *new_env = 0; |
765 | } | |
bad95d8f RS |
766 | #ifdef WINDOWSNT |
767 | prepare_standard_handles (in, out, err, handles); | |
768 | #else /* not WINDOWSNT */ | |
426b37ae JB |
769 | /* Make sure that in, out, and err are not actually already in |
770 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 771 | started with its standard in, out, or error closed, as might |
426b37ae JB |
772 | happen under X. */ |
773 | in = relocate_fd (in, 3); | |
3e9367e7 KH |
774 | if (out == err) |
775 | err = out = relocate_fd (out, 3); | |
776 | else | |
777 | { | |
778 | out = relocate_fd (out, 3); | |
779 | err = relocate_fd (err, 3); | |
780 | } | |
426b37ae | 781 | |
80856e74 JB |
782 | close (0); |
783 | close (1); | |
784 | close (2); | |
785 | ||
786 | dup2 (in, 0); | |
787 | dup2 (out, 1); | |
788 | dup2 (err, 2); | |
789 | close (in); | |
790 | close (out); | |
791 | close (err); | |
bad95d8f | 792 | #endif /* not WINDOWSNT */ |
80856e74 | 793 | |
fdba8590 RS |
794 | #ifdef USG |
795 | #ifndef SETPGRP_RELEASES_CTTY | |
e576cab4 | 796 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 797 | #endif |
e576cab4 JB |
798 | #else |
799 | setpgrp (pid, pid); | |
800 | #endif /* USG */ | |
a129418f RS |
801 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
802 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 JB |
803 | |
804 | #ifdef vipc | |
805 | something missing here; | |
806 | #endif /* vipc */ | |
807 | ||
bad95d8f RS |
808 | #ifdef WINDOWSNT |
809 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
810 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
ff27bfbe KH |
811 | if (cpid == -1) |
812 | /* An error occurred while trying to spawn the process. */ | |
813 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
814 | reset_standard_handles (in, out, err, handles); |
815 | return cpid; | |
816 | #else /* not WINDOWSNT */ | |
80856e74 JB |
817 | /* execvp does not accept an environment arg so the only way |
818 | to pass this environment is to set environ. Our caller | |
819 | is responsible for restoring the ambient value of environ. */ | |
820 | environ = env; | |
821 | execvp (new_argv[0], new_argv); | |
822 | ||
823 | write (1, "Couldn't exec the program ", 26); | |
824 | write (1, new_argv[0], strlen (new_argv[0])); | |
825 | _exit (1); | |
bad95d8f | 826 | #endif /* not WINDOWSNT */ |
7e6c2178 | 827 | #endif /* not MSDOS */ |
80856e74 JB |
828 | } |
829 | ||
426b37ae JB |
830 | /* Move the file descriptor FD so that its number is not less than MIN. |
831 | If the file descriptor is moved at all, the original is freed. */ | |
832 | int | |
833 | relocate_fd (fd, min) | |
834 | int fd, min; | |
835 | { | |
836 | if (fd >= min) | |
837 | return fd; | |
838 | else | |
839 | { | |
840 | int new = dup (fd); | |
841 | if (new == -1) | |
842 | { | |
20c018a0 | 843 | char *message1 = "Error while setting up child: "; |
826c56ac | 844 | char *errmessage = strerror (errno); |
20c018a0 JB |
845 | char *message2 = "\n"; |
846 | write (2, message1, strlen (message1)); | |
826c56ac | 847 | write (2, errmessage, strlen (errmessage)); |
20c018a0 | 848 | write (2, message2, strlen (message2)); |
426b37ae JB |
849 | _exit (1); |
850 | } | |
851 | /* Note that we hold the original FD open while we recurse, | |
852 | to guarantee we'll get a new FD if we need it. */ | |
853 | new = relocate_fd (new, min); | |
854 | close (fd); | |
855 | return new; | |
856 | } | |
857 | } | |
858 | ||
012c6fcb JA |
859 | static int |
860 | getenv_internal (var, varlen, value, valuelen) | |
861 | char *var; | |
862 | int varlen; | |
863 | char **value; | |
864 | int *valuelen; | |
865 | { | |
866 | Lisp_Object scan; | |
867 | ||
868 | for (scan = Vprocess_environment; CONSP (scan); scan = XCONS (scan)->cdr) | |
869 | { | |
c1350752 KH |
870 | Lisp_Object entry; |
871 | ||
872 | entry = XCONS (scan)->car; | |
d50d3dc8 | 873 | if (STRINGP (entry) |
012c6fcb JA |
874 | && XSTRING (entry)->size > varlen |
875 | && XSTRING (entry)->data[varlen] == '=' | |
bad95d8f RS |
876 | #ifdef WINDOWSNT |
877 | /* NT environment variables are case insensitive. */ | |
878 | && ! strnicmp (XSTRING (entry)->data, var, varlen)) | |
879 | #else /* not WINDOWSNT */ | |
012c6fcb | 880 | && ! bcmp (XSTRING (entry)->data, var, varlen)) |
bad95d8f | 881 | #endif /* not WINDOWSNT */ |
012c6fcb JA |
882 | { |
883 | *value = (char *) XSTRING (entry)->data + (varlen + 1); | |
884 | *valuelen = XSTRING (entry)->size - (varlen + 1); | |
885 | return 1; | |
886 | } | |
887 | } | |
888 | ||
889 | return 0; | |
890 | } | |
891 | ||
0ad477db | 892 | DEFUN ("getenv", Fgetenv, Sgetenv, 1, 1, 0, |
012c6fcb JA |
893 | "Return the value of environment variable VAR, as a string.\n\ |
894 | VAR should be a string. Value is nil if VAR is undefined in the environment.\n\ | |
895 | This function consults the variable ``process-environment'' for its value.") | |
896 | (var) | |
897 | Lisp_Object var; | |
898 | { | |
899 | char *value; | |
900 | int valuelen; | |
901 | ||
902 | CHECK_STRING (var, 0); | |
903 | if (getenv_internal (XSTRING (var)->data, XSTRING (var)->size, | |
904 | &value, &valuelen)) | |
905 | return make_string (value, valuelen); | |
906 | else | |
907 | return Qnil; | |
908 | } | |
909 | ||
910 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 911 | callable from C. */ |
012c6fcb JA |
912 | char * |
913 | egetenv (var) | |
e576cab4 | 914 | char *var; |
012c6fcb JA |
915 | { |
916 | char *value; | |
917 | int valuelen; | |
918 | ||
919 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
920 | return value; | |
921 | else | |
922 | return 0; | |
923 | } | |
924 | ||
80856e74 JB |
925 | #endif /* not VMS */ |
926 | \f | |
8de15d69 | 927 | /* This is run before init_cmdargs. */ |
7e6c2178 | 928 | |
8de15d69 RS |
929 | init_callproc_1 () |
930 | { | |
931 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
932 | char *doc_dir = egetenv ("EMACSDOC"); |
933 | ||
8de15d69 | 934 | Vdata_directory |
7e6c2178 | 935 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 936 | : PATH_DATA)); |
35a2f4b8 KH |
937 | Vdoc_directory |
938 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
939 | : PATH_DOC)); | |
9453ea7b | 940 | |
e576cab4 JB |
941 | /* Check the EMACSPATH environment variable, defaulting to the |
942 | PATH_EXEC path from paths.h. */ | |
943 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); | |
80856e74 JB |
944 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
945 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
946 | } |
947 | ||
948 | /* This is run after init_cmdargs, so that Vinvocation_directory is valid. */ | |
949 | ||
950 | init_callproc () | |
951 | { | |
952 | char *data_dir = egetenv ("EMACSDATA"); | |
953 | ||
954 | register char * sh; | |
955 | Lisp_Object tempdir; | |
956 | ||
05630743 | 957 | if (initialized && !NILP (Vinstallation_directory)) |
8de15d69 | 958 | { |
05630743 RS |
959 | /* Add to the path the lib-src subdir of the installation dir. */ |
960 | Lisp_Object tem; | |
961 | tem = Fexpand_file_name (build_string ("lib-src"), | |
962 | Vinstallation_directory); | |
963 | if (NILP (Fmember (tem, Vexec_path))) | |
8de15d69 | 964 | { |
bad95d8f | 965 | #ifndef DOS_NT |
1a6640ec | 966 | /* MSDOS uses wrapped binaries, so don't do this. */ |
8de15d69 RS |
967 | Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil)); |
968 | Vexec_directory = Ffile_name_as_directory (tem); | |
bad95d8f | 969 | #endif /* not DOS_NT */ |
8de15d69 RS |
970 | |
971 | /* If we use ../lib-src, maybe use ../etc as well. | |
972 | Do so if ../etc exists and has our DOC-... file in it. */ | |
973 | if (data_dir == 0) | |
974 | { | |
05630743 RS |
975 | tem = Fexpand_file_name (build_string ("etc"), |
976 | Vinstallation_directory); | |
7e933683 | 977 | Vdoc_directory = Ffile_name_as_directory (tem); |
8de15d69 RS |
978 | } |
979 | } | |
980 | } | |
7e933683 RS |
981 | |
982 | /* Look for the files that should be in etc. We don't use | |
983 | Vinstallation_directory, because these files are never installed | |
984 | in /bin near the executable, and they are never in the build | |
985 | directory when that's different from the source directory. | |
986 | ||
987 | Instead, if these files are not in the nominal place, we try the | |
988 | source directory. */ | |
989 | if (data_dir == 0) | |
990 | { | |
991 | Lisp_Object tem, tem1, newdir; | |
992 | ||
993 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); | |
994 | tem1 = Ffile_exists_p (tem); | |
995 | if (NILP (tem1)) | |
996 | { | |
997 | newdir = Fexpand_file_name (build_string ("../etc/"), | |
998 | build_string (PATH_DUMPLOADSEARCH)); | |
999 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1000 | tem1 = Ffile_exists_p (tem); | |
1001 | if (!NILP (tem1)) | |
1002 | Vdata_directory = newdir; | |
1003 | } | |
1004 | } | |
80856e74 | 1005 | |
e576cab4 JB |
1006 | tempdir = Fdirectory_file_name (Vexec_directory); |
1007 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
80856e74 | 1008 | { |
0af6a831 RS |
1009 | fprintf (stderr, |
1010 | "Warning: arch-dependent data dir (%s) does not exist.\n", | |
1011 | XSTRING (Vexec_directory)->data); | |
80856e74 JB |
1012 | sleep (2); |
1013 | } | |
1014 | ||
e576cab4 JB |
1015 | tempdir = Fdirectory_file_name (Vdata_directory); |
1016 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
1017 | { | |
0af6a831 RS |
1018 | fprintf (stderr, |
1019 | "Warning: arch-independent data dir (%s) does not exist.\n", | |
1020 | XSTRING (Vdata_directory)->data); | |
e576cab4 JB |
1021 | sleep (2); |
1022 | } | |
1023 | ||
80856e74 JB |
1024 | #ifdef VMS |
1025 | Vshell_file_name = build_string ("*dcl*"); | |
1026 | #else | |
e576cab4 | 1027 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1028 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1029 | #endif | |
9fefd2ba JB |
1030 | } |
1031 | ||
1032 | set_process_environment () | |
1033 | { | |
1034 | register char **envp; | |
80856e74 | 1035 | |
80856e74 JB |
1036 | Vprocess_environment = Qnil; |
1037 | #ifndef CANNOT_DUMP | |
1038 | if (initialized) | |
1039 | #endif | |
1040 | for (envp = environ; *envp; envp++) | |
1041 | Vprocess_environment = Fcons (build_string (*envp), | |
1042 | Vprocess_environment); | |
80856e74 JB |
1043 | } |
1044 | ||
1045 | syms_of_callproc () | |
1046 | { | |
bad95d8f | 1047 | #ifdef DOS_NT |
093650fe RS |
1048 | Qbuffer_file_type = intern ("buffer-file-type"); |
1049 | staticpro (&Qbuffer_file_type); | |
1050 | ||
1051 | DEFVAR_LISP ("binary-process-input", &Vbinary_process_input, | |
1052 | "*If non-nil then new subprocesses are assumed to take binary input."); | |
1053 | Vbinary_process_input = Qnil; | |
1054 | ||
1055 | DEFVAR_LISP ("binary-process-output", &Vbinary_process_output, | |
7e6c2178 | 1056 | "*If non-nil then new subprocesses are assumed to produce binary output."); |
093650fe | 1057 | Vbinary_process_output = Qnil; |
bad95d8f | 1058 | #endif /* DOS_NT */ |
7e6c2178 | 1059 | |
80856e74 JB |
1060 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
1061 | "*File name to load inferior shells from.\n\ | |
1062 | Initialized from the SHELL environment variable."); | |
1063 | ||
1064 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
1065 | "*List of directories to search programs to run in subprocesses.\n\ | |
1066 | Each element is a string (directory name) or nil (try default directory)."); | |
1067 | ||
1068 | DEFVAR_LISP ("exec-directory", &Vexec_directory, | |
e576cab4 JB |
1069 | "Directory of architecture-dependent files that come with GNU Emacs,\n\ |
1070 | especially executable programs intended for Emacs to invoke."); | |
1071 | ||
1072 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
1073 | "Directory of architecture-independent files that come with GNU Emacs,\n\ | |
1074 | intended for Emacs to use."); | |
80856e74 | 1075 | |
35a2f4b8 KH |
1076 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
1077 | "Directory containing the DOC file that comes with GNU Emacs.\n\ | |
1078 | This is usually the same as data-directory."); | |
1079 | ||
ed61592a JB |
1080 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
1081 | "For internal use by the build procedure only.\n\ | |
1082 | This is the name of the directory in which the build procedure installed\n\ | |
1083 | Emacs's info files; the default value for Info-default-directory-list\n\ | |
1084 | includes this."); | |
1085 | Vconfigure_info_directory = build_string (PATH_INFO); | |
1086 | ||
80856e74 | 1087 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
e576cab4 JB |
1088 | "List of environment variables for subprocesses to inherit.\n\ |
1089 | Each element should be a string of the form ENVVARNAME=VALUE.\n\ | |
1090 | The environment which Emacs inherits is placed in this variable\n\ | |
1091 | when Emacs starts."); | |
80856e74 JB |
1092 | |
1093 | #ifndef VMS | |
1094 | defsubr (&Scall_process); | |
012c6fcb | 1095 | defsubr (&Sgetenv); |
986ffb24 | 1096 | #endif |
e576cab4 | 1097 | defsubr (&Scall_process_region); |
80856e74 | 1098 | } |