Commit | Line | Data |
---|---|---|
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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
80856e74 JB |
20 | |
21 | ||
22 | #include <signal.h> | |
e576cab4 | 23 | #include <errno.h> |
80856e74 | 24 | |
18160b98 | 25 | #include <config.h> |
565620a5 | 26 | #include <stdio.h> |
80856e74 | 27 | |
426b37ae | 28 | extern int errno; |
826c56ac | 29 | extern char *strerror (); |
426b37ae | 30 | |
80856e74 JB |
31 | /* Define SIGCHLD as an alias for SIGCLD. */ |
32 | ||
33 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
34 | #define SIGCHLD SIGCLD | |
35 | #endif /* SIGCLD */ | |
36 | ||
37 | #include <sys/types.h> | |
88a64fef | 38 | |
3cbd6585 GM |
39 | #ifdef HAVE_UNISTD_H |
40 | #include <unistd.h> | |
41 | #endif | |
42 | ||
80856e74 JB |
43 | #include <sys/file.h> |
44 | #ifdef USG5 | |
472e83fe | 45 | #define INCLUDED_FCNTL |
80856e74 JB |
46 | #include <fcntl.h> |
47 | #endif | |
48 | ||
bad95d8f RS |
49 | #ifdef WINDOWSNT |
50 | #define NOMINMAX | |
51 | #include <windows.h> | |
52 | #include <stdlib.h> /* for proper declaration of environ */ | |
53 | #include <fcntl.h> | |
489f9371 | 54 | #include "w32.h" |
bad95d8f RS |
55 | #define _P_NOWAIT 1 /* from process.h */ |
56 | #endif | |
57 | ||
7e6c2178 | 58 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
472e83fe | 59 | #define INCLUDED_FCNTL |
7e6c2178 RS |
60 | #include <fcntl.h> |
61 | #include <sys/stat.h> | |
62 | #include <sys/param.h> | |
63 | #include <errno.h> | |
64 | #endif /* MSDOS */ | |
65 | ||
80856e74 JB |
66 | #ifndef O_RDONLY |
67 | #define O_RDONLY 0 | |
68 | #endif | |
69 | ||
70 | #ifndef O_WRONLY | |
71 | #define O_WRONLY 1 | |
72 | #endif | |
73 | ||
74 | #include "lisp.h" | |
75 | #include "commands.h" | |
76 | #include "buffer.h" | |
32d08644 | 77 | #include "charset.h" |
edf496dd | 78 | #include "ccl.h" |
32d08644 | 79 | #include "coding.h" |
57bda87a | 80 | #include <epaths.h> |
80856e74 | 81 | #include "process.h" |
d177f194 | 82 | #include "syssignal.h" |
a129418f | 83 | #include "systty.h" |
80856e74 | 84 | |
5f027cea EZ |
85 | #ifdef MSDOS |
86 | #include "msdos.h" | |
87 | #endif | |
88 | ||
80856e74 JB |
89 | #ifdef VMS |
90 | extern noshare char **environ; | |
91 | #else | |
92 | extern char **environ; | |
93 | #endif | |
94 | ||
95 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
96 | ||
35a2f4b8 | 97 | Lisp_Object Vexec_path, Vexec_directory, Vdata_directory, Vdoc_directory; |
ed61592a | 98 | Lisp_Object Vconfigure_info_directory; |
8abd035b | 99 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
100 | |
101 | Lisp_Object Vshell_file_name; | |
102 | ||
80856e74 | 103 | Lisp_Object Vprocess_environment; |
80856e74 | 104 | |
bad95d8f | 105 | #ifdef DOS_NT |
093650fe | 106 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 107 | #endif /* DOS_NT */ |
093650fe | 108 | |
80856e74 JB |
109 | /* True iff we are about to fork off a synchronous process or if we |
110 | are waiting for it. */ | |
111 | int synch_process_alive; | |
112 | ||
113 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
114 | char *synch_process_death; | |
115 | ||
116 | /* If synch_process_death is zero, | |
117 | this is exit code of synchronous subprocess. */ | |
118 | int synch_process_retcode; | |
8de15d69 RS |
119 | |
120 | extern Lisp_Object Vdoc_file_name; | |
89e1ec1d | 121 | |
8d024345 | 122 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
80856e74 | 123 | \f |
37d54121 RS |
124 | /* Clean up when exiting Fcall_process. |
125 | On MSDOS, delete the temporary file on any kind of termination. | |
126 | On Unix, kill the process and any children on termination by signal. */ | |
127 | ||
128 | /* Nonzero if this is termination due to exit. */ | |
129 | static int call_process_exited; | |
130 | ||
80856e74 JB |
131 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
132 | ||
d177f194 JB |
133 | static Lisp_Object |
134 | call_process_kill (fdpid) | |
135 | Lisp_Object fdpid; | |
136 | { | |
137 | close (XFASTINT (Fcar (fdpid))); | |
138 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); | |
139 | synch_process_alive = 0; | |
140 | return Qnil; | |
141 | } | |
142 | ||
80856e74 JB |
143 | Lisp_Object |
144 | call_process_cleanup (fdpid) | |
145 | Lisp_Object fdpid; | |
146 | { | |
052062e0 | 147 | #if defined (MSDOS) || defined (macintosh) |
7e6c2178 | 148 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
149 | register Lisp_Object file; |
150 | file = Fcdr (fdpid); | |
7e6c2178 RS |
151 | close (XFASTINT (Fcar (fdpid))); |
152 | if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) | |
153 | unlink (XSTRING (file)->data); | |
052062e0 | 154 | #else /* not MSDOS and not macintosh */ |
d177f194 JB |
155 | register int pid = XFASTINT (Fcdr (fdpid)); |
156 | ||
37d54121 | 157 | if (call_process_exited) |
6b6e798b RS |
158 | { |
159 | close (XFASTINT (Fcar (fdpid))); | |
160 | return Qnil; | |
161 | } | |
37d54121 | 162 | |
d177f194 JB |
163 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
164 | { | |
165 | int count = specpdl_ptr - specpdl; | |
166 | record_unwind_protect (call_process_kill, fdpid); | |
167 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
168 | immediate_quit = 1; | |
169 | QUIT; | |
170 | wait_for_termination (pid); | |
171 | immediate_quit = 0; | |
172 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
173 | message1 ("Waiting for process to die...done"); | |
174 | } | |
80856e74 | 175 | synch_process_alive = 0; |
d177f194 | 176 | close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 177 | #endif /* not MSDOS */ |
80856e74 JB |
178 | return Qnil; |
179 | } | |
180 | ||
181 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
182 | "Call PROGRAM synchronously in separate process.\n\ | |
edf496dd | 183 | The remaining arguments are optional.\n\ |
80856e74 JB |
184 | The program's input comes from file INFILE (nil means `/dev/null').\n\ |
185 | Insert output in BUFFER before point; t means current buffer;\n\ | |
186 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
187 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
188 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
189 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
190 | STDERR-FILE may be nil (discard standard error output),\n\ | |
191 | t (mix it with ordinary output), or a file name string.\n\ | |
192 | \n\ | |
80856e74 JB |
193 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
194 | Remaining arguments are strings passed as command arguments to PROGRAM.\n\ | |
39eaa782 RS |
195 | \n\ |
196 | If BUFFER is 0, `call-process' returns immediately with value nil.\n\ | |
197 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 198 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 199 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
200 | (nargs, args) |
201 | int nargs; | |
202 | register Lisp_Object *args; | |
203 | { | |
58616e67 | 204 | Lisp_Object infile, buffer, current_dir, display, path; |
80856e74 JB |
205 | int fd[2]; |
206 | int filefd; | |
207 | register int pid; | |
6e3bfbb2 RS |
208 | char buf[16384]; |
209 | char *bufptr = buf; | |
210 | int bufsize = 16384; | |
80856e74 | 211 | int count = specpdl_ptr - specpdl; |
2d607244 | 212 | |
80856e74 JB |
213 | register unsigned char **new_argv |
214 | = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
215 | struct buffer *old = current_buffer; | |
39eaa782 RS |
216 | /* File to use for stderr in the child. |
217 | t means use same as standard output. */ | |
218 | Lisp_Object error_file; | |
7e6c2178 RS |
219 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
220 | char *outf, *tempfile; | |
221 | int outfilefd; | |
222 | #endif | |
052062e0 RS |
223 | #ifdef macintosh |
224 | char *tempfile; | |
225 | int outfilefd; | |
226 | #endif | |
80856e74 JB |
227 | #if 0 |
228 | int mask; | |
229 | #endif | |
32d08644 KH |
230 | struct coding_system process_coding; /* coding-system of process output */ |
231 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
232 | /* Set to the return value of Ffind_operation_coding_system. */ |
233 | Lisp_Object coding_systems; | |
234 | ||
235 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
236 | coding_systems = Qt; | |
32d08644 | 237 | |
80856e74 JB |
238 | CHECK_STRING (args[0], 0); |
239 | ||
39eaa782 RS |
240 | error_file = Qt; |
241 | ||
7e6c2178 RS |
242 | #ifndef subprocesses |
243 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
3ffde7d6 | 244 | if (nargs >= 3 |
09ffb8b5 | 245 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
246 | error ("Operating system cannot handle asynchronous subprocesses"); |
247 | #endif /* subprocesses */ | |
248 | ||
09494912 | 249 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
250 | { |
251 | Lisp_Object val, *args2; | |
32d08644 KH |
252 | int i; |
253 | ||
254 | /* If arguments are supplied, we may have to encode them. */ | |
255 | if (nargs >= 5) | |
256 | { | |
30d57b8e RS |
257 | int must_encode = 0; |
258 | ||
e7c1c20e RS |
259 | for (i = 4; i < nargs; i++) |
260 | CHECK_STRING (args[i], i); | |
261 | ||
a2286b5c | 262 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
263 | if (STRING_MULTIBYTE (args[i])) |
264 | must_encode = 1; | |
265 | ||
beacaab3 KH |
266 | if (!NILP (Vcoding_system_for_write)) |
267 | val = Vcoding_system_for_write; | |
30d57b8e | 268 | else if (! must_encode) |
beacaab3 KH |
269 | val = Qnil; |
270 | else | |
32d08644 KH |
271 | { |
272 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
273 | args2[0] = Qcall_process; | |
274 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 275 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 276 | if (CONSP (coding_systems)) |
70949dac | 277 | val = XCDR (coding_systems); |
776b95cb | 278 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 279 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
280 | else |
281 | val = Qnil; | |
32d08644 KH |
282 | } |
283 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); | |
284 | } | |
32d08644 KH |
285 | } |
286 | ||
e576cab4 JB |
287 | if (nargs >= 2 && ! NILP (args[1])) |
288 | { | |
289 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
290 | CHECK_STRING (infile, 1); | |
291 | } | |
80856e74 | 292 | else |
5437e9f9 | 293 | infile = build_string (NULL_DEVICE); |
80856e74 | 294 | |
e576cab4 JB |
295 | if (nargs >= 3) |
296 | { | |
39eaa782 RS |
297 | buffer = args[2]; |
298 | ||
299 | /* If BUFFER is a list, its meaning is | |
300 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
301 | if (CONSP (buffer)) | |
302 | { | |
70949dac | 303 | if (CONSP (XCDR (buffer))) |
45be8a1e | 304 | { |
a9d4f28a | 305 | Lisp_Object stderr_file; |
70949dac | 306 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
307 | |
308 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
309 | error_file = stderr_file; | |
310 | else | |
311 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
312 | } | |
313 | ||
70949dac | 314 | buffer = XCAR (buffer); |
39eaa782 | 315 | } |
044512ed | 316 | |
39eaa782 RS |
317 | if (!(EQ (buffer, Qnil) |
318 | || EQ (buffer, Qt) | |
3ffde7d6 | 319 | || INTEGERP (buffer))) |
e576cab4 | 320 | { |
39eaa782 RS |
321 | Lisp_Object spec_buffer; |
322 | spec_buffer = buffer; | |
50fe359b | 323 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
324 | /* Mention the buffer name for a better error message. */ |
325 | if (NILP (buffer)) | |
326 | CHECK_BUFFER (spec_buffer, 2); | |
e576cab4 JB |
327 | CHECK_BUFFER (buffer, 2); |
328 | } | |
329 | } | |
330 | else | |
331 | buffer = Qnil; | |
80856e74 | 332 | |
58616e67 JB |
333 | /* Make sure that the child will be able to chdir to the current |
334 | buffer's current directory, or its unhandled equivalent. We | |
335 | can't just have the child check for an error when it does the | |
336 | chdir, since it's in a vfork. | |
337 | ||
338 | We have to GCPRO around this because Fexpand_file_name, | |
339 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
340 | might call a file name handling function. The argument list is | |
341 | protected by the caller, so all we really have to worry about is | |
342 | buffer. */ | |
343 | { | |
344 | struct gcpro gcpro1, gcpro2, gcpro3; | |
345 | ||
346 | current_dir = current_buffer->directory; | |
347 | ||
348 | GCPRO3 (infile, buffer, current_dir); | |
349 | ||
c52b0b34 KH |
350 | current_dir |
351 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
352 | Qnil); | |
58616e67 JB |
353 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
354 | report_file_error ("Setting current directory", | |
355 | Fcons (current_buffer->directory, Qnil)); | |
356 | ||
357 | UNGCPRO; | |
358 | } | |
359 | ||
e576cab4 | 360 | display = nargs >= 4 ? args[3] : Qnil; |
80856e74 | 361 | |
e576cab4 | 362 | filefd = open (XSTRING (infile)->data, O_RDONLY, 0); |
80856e74 JB |
363 | if (filefd < 0) |
364 | { | |
e576cab4 | 365 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
366 | } |
367 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
368 | { |
369 | struct gcpro gcpro1; | |
370 | ||
371 | GCPRO1 (current_dir); | |
372 | openp (Vexec_path, args[0], EXEC_SUFFIXES, &path, 1); | |
373 | UNGCPRO; | |
374 | } | |
012c6fcb | 375 | if (NILP (path)) |
80856e74 JB |
376 | { |
377 | close (filefd); | |
378 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); | |
379 | } | |
380 | new_argv[0] = XSTRING (path)->data; | |
c364e618 KH |
381 | if (nargs > 4) |
382 | { | |
383 | register int i; | |
384 | ||
c364e618 KH |
385 | if (! CODING_REQUIRE_ENCODING (&argument_coding)) |
386 | { | |
387 | for (i = 4; i < nargs; i++) | |
388 | new_argv[i - 3] = XSTRING (args[i])->data; | |
389 | } | |
390 | else | |
391 | { | |
392 | /* We must encode the arguments. */ | |
393 | struct gcpro gcpro1, gcpro2, gcpro3; | |
394 | ||
395 | GCPRO3 (infile, buffer, current_dir); | |
396 | for (i = 4; i < nargs; i++) | |
397 | { | |
398 | int size = encoding_buffer_size (&argument_coding, | |
fc932ac6 | 399 | STRING_BYTES (XSTRING (args[i]))); |
c364e618 | 400 | unsigned char *dummy1 = (unsigned char *) alloca (size); |
c364e618 KH |
401 | |
402 | /* The Irix 4.0 compiler barfs if we eliminate dummy. */ | |
403 | new_argv[i - 3] = dummy1; | |
edf496dd | 404 | argument_coding.mode |= CODING_MODE_LAST_BLOCK; |
321fecde KH |
405 | encode_coding (&argument_coding, |
406 | XSTRING (args[i])->data, | |
407 | new_argv[i - 3], | |
fc932ac6 | 408 | STRING_BYTES (XSTRING (args[i])), |
321fecde KH |
409 | size); |
410 | new_argv[i - 3][argument_coding.produced] = 0; | |
edf496dd KH |
411 | /* We have to initialize CCL program status again. */ |
412 | if (argument_coding.type == coding_type_ccl) | |
413 | setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil); | |
c364e618 KH |
414 | } |
415 | UNGCPRO; | |
416 | } | |
db54baaa | 417 | new_argv[nargs - 3] = 0; |
c364e618 | 418 | } |
db54baaa KH |
419 | else |
420 | new_argv[1] = 0; | |
80856e74 | 421 | |
7e6c2178 | 422 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 423 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
424 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
425 | else | |
426 | { | |
427 | tempfile = alloca (20); | |
428 | *tempfile = '\0'; | |
429 | } | |
430 | dostounix_filename (tempfile); | |
431 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') | |
432 | strcat (tempfile, "/"); | |
433 | strcat (tempfile, "detmp.XXX"); | |
434 | mktemp (tempfile); | |
435 | ||
436 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
437 | if (outfilefd < 0) | |
438 | { | |
439 | close (filefd); | |
6f89d28a MB |
440 | report_file_error ("Opening process output file", |
441 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 442 | } |
6f89d28a | 443 | fd[0] = filefd; |
2610078a | 444 | fd[1] = outfilefd; |
6f89d28a | 445 | #endif /* MSDOS */ |
7e6c2178 | 446 | |
052062e0 RS |
447 | #ifdef macintosh |
448 | /* Since we don't have pipes on the Mac, create a temporary file to | |
449 | hold the output of the subprocess. */ | |
450 | tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
451 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, | |
452 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
453 | ||
454 | mktemp (tempfile); | |
455 | ||
456 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
457 | if (outfilefd < 0) | |
458 | { | |
459 | close (filefd); | |
460 | report_file_error ("Opening process output file", | |
461 | Fcons (build_string (tempfile), Qnil)); | |
462 | } | |
463 | fd[0] = filefd; | |
464 | fd[1] = outfilefd; | |
465 | #endif /* macintosh */ | |
466 | ||
d50d3dc8 | 467 | if (INTEGERP (buffer)) |
5437e9f9 | 468 | fd[1] = open (NULL_DEVICE, O_WRONLY), fd[0] = -1; |
80856e74 JB |
469 | else |
470 | { | |
7e6c2178 | 471 | #ifndef MSDOS |
052062e0 | 472 | #ifndef macintosh |
80856e74 | 473 | pipe (fd); |
7e6c2178 | 474 | #endif |
052062e0 | 475 | #endif |
80856e74 JB |
476 | #if 0 |
477 | /* Replaced by close_process_descs */ | |
478 | set_exclusive_use (fd[0]); | |
479 | #endif | |
480 | } | |
481 | ||
482 | { | |
483 | /* child_setup must clobber environ in systems with true vfork. | |
484 | Protect it from permanent change. */ | |
485 | register char **save_environ = environ; | |
486 | register int fd1 = fd[1]; | |
39eaa782 | 487 | int fd_error = fd1; |
80856e74 JB |
488 | |
489 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 490 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
491 | #endif |
492 | ||
493 | /* Record that we're about to create a synchronous process. */ | |
494 | synch_process_alive = 1; | |
495 | ||
5c03767e RS |
496 | /* These vars record information from process termination. |
497 | Clear them now before process can possibly terminate, | |
498 | to avoid timing error if process terminates soon. */ | |
499 | synch_process_death = 0; | |
500 | synch_process_retcode = 0; | |
501 | ||
39eaa782 RS |
502 | if (NILP (error_file)) |
503 | fd_error = open (NULL_DEVICE, O_WRONLY); | |
504 | else if (STRINGP (error_file)) | |
505 | { | |
506 | #ifdef DOS_NT | |
507 | fd_error = open (XSTRING (error_file)->data, | |
508 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
509 | S_IREAD | S_IWRITE); | |
510 | #else /* not DOS_NT */ | |
511 | fd_error = creat (XSTRING (error_file)->data, 0666); | |
512 | #endif /* not DOS_NT */ | |
513 | } | |
514 | ||
515 | if (fd_error < 0) | |
516 | { | |
517 | close (filefd); | |
6f89d28a MB |
518 | if (fd[0] != filefd) |
519 | close (fd[0]); | |
39eaa782 RS |
520 | if (fd1 >= 0) |
521 | close (fd1); | |
6f89d28a MB |
522 | #ifdef MSDOS |
523 | unlink (tempfile); | |
524 | #endif | |
525 | report_file_error ("Cannot redirect stderr", | |
526 | Fcons ((NILP (error_file) | |
527 | ? build_string (NULL_DEVICE) : error_file), | |
528 | Qnil)); | |
39eaa782 | 529 | } |
89e1ec1d | 530 | |
8d024345 | 531 | current_dir = ENCODE_FILE (current_dir); |
89e1ec1d | 532 | |
052062e0 RS |
533 | #ifdef macintosh |
534 | { | |
535 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
536 | a child_setup as for MSDOS and other platforms. Note that this | |
537 | code does not handle passing the environment to the synchronous | |
538 | Mac subprocess. */ | |
539 | char *infn, *outfn, *errfn, *currdn; | |
540 | ||
541 | /* close these files so subprocess can write to them */ | |
542 | close (outfilefd); | |
543 | if (fd_error != outfilefd) | |
544 | close (fd_error); | |
545 | fd1 = -1; /* No harm in closing that one! */ | |
546 | ||
547 | infn = XSTRING (infile)->data; | |
548 | outfn = tempfile; | |
549 | if (NILP (error_file)) | |
550 | errfn = NULL_DEVICE; | |
551 | else if (EQ (Qt, error_file)) | |
552 | errfn = outfn; | |
553 | else | |
554 | errfn = XSTRING (error_file)->data; | |
555 | currdn = XSTRING (current_dir)->data; | |
556 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); | |
557 | ||
558 | /* Record that the synchronous process exited and note its | |
559 | termination status. */ | |
560 | synch_process_alive = 0; | |
561 | synch_process_retcode = pid; | |
562 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
563 | synch_process_death = strerror (errno); | |
564 | ||
565 | /* Since CRLF is converted to LF within `decode_coding', we can | |
566 | always open a file with binary mode. */ | |
567 | fd[0] = open (tempfile, O_BINARY); | |
568 | if (fd[0] < 0) | |
569 | { | |
570 | unlink (tempfile); | |
571 | close (filefd); | |
572 | report_file_error ("Cannot re-open temporary file", Qnil); | |
573 | } | |
574 | } | |
575 | #else /* not macintosh */ | |
2610078a | 576 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 577 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
578 | exit status, not its PID, so we assign it to `synch_process_retcode' |
579 | below. */ | |
c17c4250 EZ |
580 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
581 | 0, current_dir); | |
39eaa782 | 582 | |
2610078a KH |
583 | /* Record that the synchronous process exited and note its |
584 | termination status. */ | |
585 | synch_process_alive = 0; | |
586 | synch_process_retcode = pid; | |
587 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
759ae811 | 588 | synch_process_death = strerror (errno); |
2610078a KH |
589 | |
590 | close (outfilefd); | |
591 | if (fd_error != outfilefd) | |
592 | close (fd_error); | |
593 | fd1 = -1; /* No harm in closing that one! */ | |
32d08644 KH |
594 | /* Since CRLF is converted to LF within `decode_coding', we can |
595 | always open a file with binary mode. */ | |
596 | fd[0] = open (tempfile, O_BINARY); | |
2610078a KH |
597 | if (fd[0] < 0) |
598 | { | |
599 | unlink (tempfile); | |
600 | close (filefd); | |
601 | report_file_error ("Cannot re-open temporary file", Qnil); | |
602 | } | |
603 | #else /* not MSDOS */ | |
bad95d8f | 604 | #ifdef WINDOWSNT |
2d607244 RS |
605 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
606 | 0, current_dir); | |
bad95d8f | 607 | #else /* not WINDOWSNT */ |
80856e74 JB |
608 | pid = vfork (); |
609 | ||
610 | if (pid == 0) | |
611 | { | |
612 | if (fd[0] >= 0) | |
613 | close (fd[0]); | |
1e7963c7 RS |
614 | #ifdef HAVE_SETSID |
615 | setsid (); | |
616 | #endif | |
617 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
618 | setpgrp (); |
619 | #else | |
620 | setpgrp (pid, pid); | |
621 | #endif /* USG */ | |
2d607244 RS |
622 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
623 | 0, current_dir); | |
80856e74 | 624 | } |
bad95d8f | 625 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
626 | |
627 | /* The MSDOS case did this already. */ | |
628 | if (fd_error >= 0) | |
629 | close (fd_error); | |
2610078a | 630 | #endif /* not MSDOS */ |
052062e0 | 631 | #endif /* not macintosh */ |
80856e74 | 632 | |
80856e74 JB |
633 | environ = save_environ; |
634 | ||
6b6e798b RS |
635 | /* Close most of our fd's, but not fd[0] |
636 | since we will use that to read input from. */ | |
80856e74 | 637 | close (filefd); |
799abb26 | 638 | if (fd1 >= 0 && fd1 != fd_error) |
7e6c2178 | 639 | close (fd1); |
80856e74 JB |
640 | } |
641 | ||
642 | if (pid < 0) | |
643 | { | |
6b6e798b RS |
644 | if (fd[0] >= 0) |
645 | close (fd[0]); | |
80856e74 JB |
646 | report_file_error ("Doing vfork", Qnil); |
647 | } | |
648 | ||
d50d3dc8 | 649 | if (INTEGERP (buffer)) |
80856e74 | 650 | { |
6b6e798b RS |
651 | if (fd[0] >= 0) |
652 | close (fd[0]); | |
80856e74 | 653 | #ifndef subprocesses |
e576cab4 JB |
654 | /* If Emacs has been built with asynchronous subprocess support, |
655 | we don't need to do this, I think because it will then have | |
656 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
657 | wait_without_blocking (); |
658 | #endif /* subprocesses */ | |
80856e74 JB |
659 | return Qnil; |
660 | } | |
661 | ||
6b6e798b | 662 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
663 | call_process_exited = 0; |
664 | ||
052062e0 | 665 | #if defined(MSDOS) || defined(macintosh) |
7e6c2178 RS |
666 | /* MSDOS needs different cleanup information. */ |
667 | record_unwind_protect (call_process_cleanup, | |
668 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
669 | #else | |
80856e74 JB |
670 | record_unwind_protect (call_process_cleanup, |
671 | Fcons (make_number (fd[0]), make_number (pid))); | |
052062e0 | 672 | #endif /* not MSDOS and not macintosh */ |
80856e74 JB |
673 | |
674 | ||
d50d3dc8 | 675 | if (BUFFERP (buffer)) |
80856e74 JB |
676 | Fset_buffer (buffer); |
677 | ||
09494912 RS |
678 | if (NILP (buffer)) |
679 | { | |
680 | /* If BUFFER is nil, we must read process output once and then | |
681 | discard it, so setup coding system but with nil. */ | |
682 | setup_coding_system (Qnil, &process_coding); | |
683 | } | |
684 | else | |
685 | { | |
686 | Lisp_Object val, *args2; | |
687 | ||
688 | val = Qnil; | |
689 | if (!NILP (Vcoding_system_for_read)) | |
690 | val = Vcoding_system_for_read; | |
691 | else | |
692 | { | |
693 | if (EQ (coding_systems, Qt)) | |
694 | { | |
695 | int i; | |
696 | ||
697 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
698 | args2[0] = Qcall_process; | |
699 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
700 | coding_systems | |
701 | = Ffind_operation_coding_system (nargs + 1, args2); | |
702 | } | |
703 | if (CONSP (coding_systems)) | |
70949dac | 704 | val = XCAR (coding_systems); |
09494912 | 705 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 706 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
707 | else |
708 | val = Qnil; | |
709 | } | |
710 | setup_coding_system (Fcheck_coding_system (val), &process_coding); | |
711 | /* In unibyte mode, character code conversion should not take | |
712 | place but EOL conversion should. So, setup raw-text or one | |
713 | of the subsidiary according to the information just setup. */ | |
714 | if (NILP (current_buffer->enable_multibyte_characters) | |
715 | && !NILP (val)) | |
716 | setup_raw_text_coding_system (&process_coding); | |
717 | } | |
718 | ||
80856e74 JB |
719 | immediate_quit = 1; |
720 | QUIT; | |
721 | ||
722 | { | |
723 | register int nread; | |
0ad477db | 724 | int first = 1; |
6e3bfbb2 | 725 | int total_read = 0; |
321fecde | 726 | int carryover = 0; |
7a7ab107 | 727 | int display_on_the_fly = !NILP (display) && INTERACTIVE; |
05b44e90 KH |
728 | struct coding_system saved_coding; |
729 | ||
730 | saved_coding = process_coding; | |
80856e74 | 731 | |
60558b19 | 732 | while (1) |
80856e74 | 733 | { |
60558b19 RS |
734 | /* Repeatedly read until we've filled as much as possible |
735 | of the buffer size we have. But don't read | |
8e6208c5 | 736 | less than 1024--save that for the next bufferful. */ |
321fecde | 737 | nread = carryover; |
60558b19 | 738 | while (nread < bufsize - 1024) |
00fb3e95 | 739 | { |
321fecde | 740 | int this_read = read (fd[0], bufptr + nread, bufsize - nread); |
60558b19 RS |
741 | |
742 | if (this_read < 0) | |
743 | goto give_up; | |
744 | ||
745 | if (this_read == 0) | |
7a7ab107 KH |
746 | { |
747 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
748 | break; | |
749 | } | |
60558b19 RS |
750 | |
751 | nread += this_read; | |
7a7ab107 | 752 | total_read += this_read; |
60558b19 | 753 | |
7a7ab107 KH |
754 | if (display_on_the_fly) |
755 | break; | |
756 | } | |
60558b19 RS |
757 | |
758 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 759 | immediate_quit = 0; |
6e3bfbb2 | 760 | |
012c6fcb | 761 | if (!NILP (buffer)) |
32d08644 KH |
762 | { |
763 | if (process_coding.type == coding_type_no_conversion) | |
764 | insert (bufptr, nread); | |
765 | else | |
766 | { /* We have to decode the input. */ | |
321fecde | 767 | int size = decoding_buffer_size (&process_coding, nread); |
a871dd58 | 768 | char *decoding_buf = (char *) xmalloc (size); |
32d08644 | 769 | |
321fecde KH |
770 | decode_coding (&process_coding, bufptr, decoding_buf, |
771 | nread, size); | |
7a7ab107 KH |
772 | if (display_on_the_fly |
773 | && saved_coding.type == coding_type_undecided | |
774 | && process_coding.type != coding_type_undecided) | |
775 | { | |
776 | /* We have detected some coding system. But, | |
777 | there's a possibility that the detection was | |
778 | done by insufficient data. So, we give up | |
779 | displaying on the fly. */ | |
a871dd58 | 780 | xfree (decoding_buf); |
7a7ab107 KH |
781 | display_on_the_fly = 0; |
782 | process_coding = saved_coding; | |
783 | carryover = nread; | |
784 | continue; | |
785 | } | |
321fecde KH |
786 | if (process_coding.produced > 0) |
787 | insert (decoding_buf, process_coding.produced); | |
a871dd58 | 788 | xfree (decoding_buf); |
11218c68 | 789 | carryover = nread - process_coding.consumed; |
321fecde KH |
790 | if (carryover > 0) |
791 | { | |
792 | /* As CARRYOVER should not be that large, we had | |
793 | better avoid overhead of bcopy. */ | |
794 | char *p = bufptr + process_coding.consumed; | |
795 | char *pend = p + carryover; | |
796 | char *dst = bufptr; | |
797 | ||
798 | while (p < pend) *dst++ = *p++; | |
799 | } | |
32d08644 KH |
800 | } |
801 | } | |
321fecde KH |
802 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
803 | { | |
804 | if (carryover > 0) | |
805 | insert (bufptr, carryover); | |
806 | break; | |
807 | } | |
6e3bfbb2 RS |
808 | |
809 | /* Make the buffer bigger as we continue to read more data, | |
810 | but not past 64k. */ | |
811 | if (bufsize < 64 * 1024 && total_read > 32 * bufsize) | |
812 | { | |
813 | bufsize *= 2; | |
814 | bufptr = (char *) alloca (bufsize); | |
815 | } | |
816 | ||
012c6fcb | 817 | if (!NILP (display) && INTERACTIVE) |
0ad477db RS |
818 | { |
819 | if (first) | |
820 | prepare_menu_bars (); | |
821 | first = 0; | |
822 | redisplay_preserve_echo_area (); | |
823 | } | |
80856e74 JB |
824 | immediate_quit = 1; |
825 | QUIT; | |
826 | } | |
60558b19 | 827 | give_up: ; |
80856e74 | 828 | |
bbd29cfe KH |
829 | Vlast_coding_system_used = process_coding.symbol; |
830 | ||
3b440bb5 EZ |
831 | /* If the caller required, let the buffer inherit the |
832 | coding-system used to decode the process output. */ | |
833 | if (inherit_process_coding_system) | |
834 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
835 | make_number (total_read)); | |
836 | } | |
837 | ||
80856e74 JB |
838 | /* Wait for it to terminate, unless it already has. */ |
839 | wait_for_termination (pid); | |
840 | ||
841 | immediate_quit = 0; | |
842 | ||
843 | set_buffer_internal (old); | |
844 | ||
37d54121 RS |
845 | /* Don't kill any children that the subprocess may have left behind |
846 | when exiting. */ | |
847 | call_process_exited = 1; | |
848 | ||
80856e74 JB |
849 | unbind_to (count, Qnil); |
850 | ||
80856e74 JB |
851 | if (synch_process_death) |
852 | return build_string (synch_process_death); | |
853 | return make_number (synch_process_retcode); | |
854 | } | |
855 | #endif | |
856 | \f | |
9fefd2ba | 857 | static Lisp_Object |
80856e74 JB |
858 | delete_temp_file (name) |
859 | Lisp_Object name; | |
860 | { | |
2e3dc201 | 861 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 862 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 863 | internal_delete_file (name); |
80856e74 JB |
864 | } |
865 | ||
866 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
867 | 3, MANY, 0, | |
868 | "Send text from START to END to a synchronous process running PROGRAM.\n\ | |
edf496dd | 869 | The remaining arguments are optional.\n\ |
80856e74 | 870 | Delete the text if fourth arg DELETE is non-nil.\n\ |
39eaa782 | 871 | \n\ |
80856e74 JB |
872 | Insert output in BUFFER before point; t means current buffer;\n\ |
873 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
874 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
875 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
876 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
877 | STDERR-FILE may be nil (discard standard error output),\n\ | |
878 | t (mix it with ordinary output), or a file name string.\n\ | |
879 | \n\ | |
80856e74 JB |
880 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
881 | Remaining args are passed to PROGRAM at startup as command args.\n\ | |
39eaa782 RS |
882 | \n\ |
883 | If BUFFER is nil, `call-process-region' returns immediately with value nil.\n\ | |
884 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 885 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 886 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
887 | (nargs, args) |
888 | int nargs; | |
889 | register Lisp_Object *args; | |
890 | { | |
39323a7e KH |
891 | struct gcpro gcpro1; |
892 | Lisp_Object filename_string; | |
893 | register Lisp_Object start, end; | |
d3e81d0a | 894 | int count = specpdl_ptr - specpdl; |
08ee4e87 | 895 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 896 | Lisp_Object coding_systems; |
32d08644 KH |
897 | Lisp_Object val, *args2; |
898 | int i; | |
bad95d8f | 899 | #ifdef DOS_NT |
7e6c2178 | 900 | char *tempfile; |
7e6c2178 RS |
901 | char *outf = '\0'; |
902 | ||
8a52365c EZ |
903 | if ((outf = egetenv ("TMPDIR")) |
904 | || (outf = egetenv ("TMP")) | |
905 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
906 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
907 | else | |
908 | { | |
909 | tempfile = alloca (20); | |
910 | *tempfile = '\0'; | |
911 | } | |
0774fcf8 | 912 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 913 | strcat (tempfile, "/"); |
5711b547 RS |
914 | if ('/' == DIRECTORY_SEP) |
915 | dostounix_filename (tempfile); | |
916 | else | |
917 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
918 | #ifdef WINDOWSNT |
919 | strcat (tempfile, "emXXXXXX"); | |
920 | #else | |
7e6c2178 | 921 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 922 | #endif |
bad95d8f | 923 | #else /* not DOS_NT */ |
fc932ac6 | 924 | char *tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
8abd035b | 925 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, |
fc932ac6 | 926 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
bad95d8f | 927 | #endif /* not DOS_NT */ |
7e6c2178 | 928 | |
09494912 RS |
929 | coding_systems = Qt; |
930 | ||
80856e74 JB |
931 | mktemp (tempfile); |
932 | ||
933 | filename_string = build_string (tempfile); | |
39323a7e | 934 | GCPRO1 (filename_string); |
80856e74 JB |
935 | start = args[0]; |
936 | end = args[1]; | |
32d08644 | 937 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
938 | if (!NILP (Vcoding_system_for_write)) |
939 | val = Vcoding_system_for_write; | |
940 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
941 | val = Qnil; |
942 | else | |
beacaab3 | 943 | { |
91489411 RS |
944 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
945 | args2[0] = Qcall_process_region; | |
946 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
947 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
948 | if (CONSP (coding_systems)) | |
70949dac | 949 | val = XCDR (coding_systems); |
91489411 | 950 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 951 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 952 | else |
91489411 | 953 | val = Qnil; |
beacaab3 | 954 | } |
32d08644 | 955 | |
168afdaa RS |
956 | { |
957 | int count1 = specpdl_ptr - specpdl; | |
958 | ||
959 | specbind (intern ("coding-system-for-write"), val); | |
960 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); | |
961 | ||
962 | unbind_to (count1, Qnil); | |
963 | } | |
91489411 RS |
964 | |
965 | /* Note that Fcall_process takes care of binding | |
966 | coding-system-for-read. */ | |
093650fe | 967 | |
80856e74 JB |
968 | record_unwind_protect (delete_temp_file, filename_string); |
969 | ||
edf496dd | 970 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
971 | Fdelete_region (start, end); |
972 | ||
edf496dd KH |
973 | if (nargs > 3) |
974 | { | |
975 | args += 2; | |
976 | nargs -= 2; | |
977 | } | |
978 | else | |
979 | { | |
980 | args[0] = args[2]; | |
981 | nargs = 2; | |
982 | } | |
983 | args[1] = filename_string; | |
80856e74 | 984 | |
edf496dd | 985 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
986 | } |
987 | \f | |
988 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
989 | ||
dfcf069d AS |
990 | static int relocate_fd (); |
991 | ||
80856e74 JB |
992 | /* This is the last thing run in a newly forked inferior |
993 | either synchronous or asynchronous. | |
994 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
995 | Initialize inferior's priority, pgrp, connected dir and environment. | |
996 | then exec another program based on new_argv. | |
997 | ||
998 | This function may change environ for the superior process. | |
999 | Therefore, the superior process must save and restore the value | |
1000 | of environ around the vfork and the call to this function. | |
1001 | ||
80856e74 | 1002 | SET_PGRP is nonzero if we should put the subprocess into a separate |
e576cab4 JB |
1003 | process group. |
1004 | ||
1005 | CURRENT_DIR is an elisp string giving the path of the current | |
1006 | directory the subprocess should have. Since we can't really signal | |
1007 | a decent error from within the child, this should be verified as an | |
1008 | executable directory by the parent. */ | |
80856e74 | 1009 | |
dfcf069d | 1010 | int |
e576cab4 | 1011 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1012 | int in, out, err; |
1013 | register char **new_argv; | |
80856e74 | 1014 | int set_pgrp; |
e576cab4 | 1015 | Lisp_Object current_dir; |
80856e74 | 1016 | { |
e576cab4 | 1017 | char **env; |
7fcf7f05 | 1018 | char *pwd_var; |
bad95d8f RS |
1019 | #ifdef WINDOWSNT |
1020 | int cpid; | |
4252a4bd | 1021 | HANDLE handles[3]; |
bad95d8f | 1022 | #endif /* WINDOWSNT */ |
e576cab4 | 1023 | |
33abe2d9 | 1024 | int pid = getpid (); |
80856e74 | 1025 | |
68d10241 | 1026 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 JB |
1027 | { |
1028 | extern int emacs_priority; | |
1029 | ||
68d10241 RS |
1030 | if (emacs_priority < 0) |
1031 | nice (- emacs_priority); | |
4f0b9d49 | 1032 | } |
5b633aeb | 1033 | #endif |
80856e74 JB |
1034 | |
1035 | #ifdef subprocesses | |
1036 | /* Close Emacs's descriptors that this process should not have. */ | |
1037 | close_process_descs (); | |
1038 | #endif | |
c17c4250 EZ |
1039 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1040 | we will lose if we call close_load_descs here. */ | |
1041 | #ifndef DOS_NT | |
4458cebe | 1042 | close_load_descs (); |
c17c4250 | 1043 | #endif |
80856e74 JB |
1044 | |
1045 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1046 | that do not have true vfork or that have true (stack) alloca. | |
1047 | If using vfork and C_ALLOCA it is safe because that changes | |
1048 | the superior's static variables as if the superior had done alloca | |
1049 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1050 | { |
7fcf7f05 | 1051 | register char *temp; |
e576cab4 | 1052 | register int i; |
77d78be1 | 1053 | |
fc932ac6 | 1054 | i = STRING_BYTES (XSTRING (current_dir)); |
7fcf7f05 RS |
1055 | pwd_var = (char *) alloca (i + 6); |
1056 | temp = pwd_var + 4; | |
1057 | bcopy ("PWD=", pwd_var, 4); | |
e576cab4 | 1058 | bcopy (XSTRING (current_dir)->data, temp, i); |
bad95d8f | 1059 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1060 | temp[i] = 0; |
1061 | ||
c17c4250 | 1062 | #ifndef DOS_NT |
e576cab4 JB |
1063 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1064 | the callers check the current directory before forking, this | |
1065 | should only return an error if the directory's permissions | |
1066 | are changed between the check and this chdir, but we should | |
1067 | at least check. */ | |
1068 | if (chdir (temp) < 0) | |
20b25e46 | 1069 | _exit (errno); |
b4c7684c | 1070 | #endif |
7fcf7f05 | 1071 | |
c17c4250 EZ |
1072 | #ifdef DOS_NT |
1073 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1074 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1075 | { | |
1076 | temp += 2; | |
1077 | i -= 2; | |
1078 | } | |
1079 | #endif | |
1080 | ||
7fcf7f05 | 1081 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1082 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1083 | temp[--i] = 0; |
e576cab4 | 1084 | } |
80856e74 | 1085 | |
80856e74 JB |
1086 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1087 | { | |
1088 | register Lisp_Object tem; | |
1089 | register char **new_env; | |
1090 | register int new_length; | |
1091 | ||
1092 | new_length = 0; | |
1093 | for (tem = Vprocess_environment; | |
70949dac KR |
1094 | CONSP (tem) && STRINGP (XCAR (tem)); |
1095 | tem = XCDR (tem)) | |
80856e74 JB |
1096 | new_length++; |
1097 | ||
7fcf7f05 RS |
1098 | /* new_length + 2 to include PWD and terminating 0. */ |
1099 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1100 | ||
1101 | /* If we have a PWD envvar, pass one down, | |
1102 | but with corrected value. */ | |
1103 | if (getenv ("PWD")) | |
1104 | *new_env++ = pwd_var; | |
80856e74 | 1105 | |
cd9565ba | 1106 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1107 | for (tem = Vprocess_environment; |
70949dac KR |
1108 | CONSP (tem) && STRINGP (XCAR (tem)); |
1109 | tem = XCDR (tem)) | |
cd9565ba RS |
1110 | { |
1111 | char **ep = env; | |
70949dac | 1112 | char *string = (char *) XSTRING (XCAR (tem))->data; |
cd9565ba RS |
1113 | /* See if this string duplicates any string already in the env. |
1114 | If so, don't put it in. | |
1115 | When an env var has multiple definitions, | |
1116 | we keep the definition that comes first in process-environment. */ | |
1117 | for (; ep != new_env; ep++) | |
1118 | { | |
1119 | char *p = *ep, *q = string; | |
1120 | while (1) | |
1121 | { | |
1122 | if (*q == 0) | |
1123 | /* The string is malformed; might as well drop it. */ | |
1124 | goto duplicate; | |
1125 | if (*q != *p) | |
1126 | break; | |
1127 | if (*q == '=') | |
1128 | goto duplicate; | |
1129 | p++, q++; | |
1130 | } | |
1131 | } | |
1132 | *new_env++ = string; | |
1133 | duplicate: ; | |
1134 | } | |
80856e74 JB |
1135 | *new_env = 0; |
1136 | } | |
bad95d8f RS |
1137 | #ifdef WINDOWSNT |
1138 | prepare_standard_handles (in, out, err, handles); | |
b4c7684c | 1139 | set_process_dir (XSTRING (current_dir)->data); |
bad95d8f | 1140 | #else /* not WINDOWSNT */ |
426b37ae JB |
1141 | /* Make sure that in, out, and err are not actually already in |
1142 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1143 | started with its standard in, out, or error closed, as might |
426b37ae | 1144 | happen under X. */ |
f29f9e4a RS |
1145 | { |
1146 | int oin = in, oout = out; | |
1147 | ||
1148 | /* We have to avoid relocating the same descriptor twice! */ | |
1149 | ||
1150 | in = relocate_fd (in, 3); | |
1151 | ||
1152 | if (out == oin) | |
1153 | out = in; | |
1154 | else | |
3e9367e7 | 1155 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1156 | |
1157 | if (err == oin) | |
1158 | err = in; | |
1159 | else if (err == oout) | |
1160 | err = out; | |
1161 | else | |
3e9367e7 | 1162 | err = relocate_fd (err, 3); |
f29f9e4a | 1163 | } |
426b37ae | 1164 | |
c17c4250 | 1165 | #ifndef MSDOS |
80856e74 JB |
1166 | close (0); |
1167 | close (1); | |
1168 | close (2); | |
1169 | ||
1170 | dup2 (in, 0); | |
1171 | dup2 (out, 1); | |
1172 | dup2 (err, 2); | |
1173 | close (in); | |
1174 | close (out); | |
1175 | close (err); | |
c17c4250 | 1176 | #endif /* not MSDOS */ |
bad95d8f | 1177 | #endif /* not WINDOWSNT */ |
80856e74 | 1178 | |
6b2cd868 | 1179 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1180 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1181 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1182 | #endif |
e576cab4 JB |
1183 | #else |
1184 | setpgrp (pid, pid); | |
1185 | #endif /* USG */ | |
a129418f RS |
1186 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1187 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 JB |
1188 | |
1189 | #ifdef vipc | |
1190 | something missing here; | |
1191 | #endif /* vipc */ | |
1192 | ||
c17c4250 EZ |
1193 | #ifdef MSDOS |
1194 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
1195 | if (pid == -1) | |
1196 | /* An error occurred while trying to run the subprocess. */ | |
1197 | report_file_error ("Spawning child process", Qnil); | |
1198 | return pid; | |
1199 | #else /* not MSDOS */ | |
bad95d8f RS |
1200 | #ifdef WINDOWSNT |
1201 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1202 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1203 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1204 | if (cpid == -1) |
1205 | /* An error occurred while trying to spawn the process. */ | |
1206 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1207 | return cpid; |
1208 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1209 | /* execvp does not accept an environment arg so the only way |
1210 | to pass this environment is to set environ. Our caller | |
1211 | is responsible for restoring the ambient value of environ. */ | |
1212 | environ = env; | |
1213 | execvp (new_argv[0], new_argv); | |
1214 | ||
f040c0ba | 1215 | write (1, "Can't exec program: ", 20); |
80856e74 | 1216 | write (1, new_argv[0], strlen (new_argv[0])); |
d20b8af6 | 1217 | write (1, "\n", 1); |
80856e74 | 1218 | _exit (1); |
bad95d8f | 1219 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1220 | #endif /* not MSDOS */ |
80856e74 JB |
1221 | } |
1222 | ||
a3833dfe | 1223 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1224 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1225 | static int |
a3833dfe KH |
1226 | relocate_fd (fd, minfd) |
1227 | int fd, minfd; | |
426b37ae | 1228 | { |
a3833dfe | 1229 | if (fd >= minfd) |
426b37ae JB |
1230 | return fd; |
1231 | else | |
1232 | { | |
1233 | int new = dup (fd); | |
1234 | if (new == -1) | |
1235 | { | |
20c018a0 | 1236 | char *message1 = "Error while setting up child: "; |
826c56ac | 1237 | char *errmessage = strerror (errno); |
20c018a0 JB |
1238 | char *message2 = "\n"; |
1239 | write (2, message1, strlen (message1)); | |
826c56ac | 1240 | write (2, errmessage, strlen (errmessage)); |
20c018a0 | 1241 | write (2, message2, strlen (message2)); |
426b37ae JB |
1242 | _exit (1); |
1243 | } | |
1244 | /* Note that we hold the original FD open while we recurse, | |
1245 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1246 | new = relocate_fd (new, minfd); |
426b37ae JB |
1247 | close (fd); |
1248 | return new; | |
1249 | } | |
1250 | } | |
1251 | ||
012c6fcb JA |
1252 | static int |
1253 | getenv_internal (var, varlen, value, valuelen) | |
1254 | char *var; | |
1255 | int varlen; | |
1256 | char **value; | |
1257 | int *valuelen; | |
1258 | { | |
1259 | Lisp_Object scan; | |
1260 | ||
70949dac | 1261 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1262 | { |
c1350752 KH |
1263 | Lisp_Object entry; |
1264 | ||
70949dac | 1265 | entry = XCAR (scan); |
d50d3dc8 | 1266 | if (STRINGP (entry) |
fc932ac6 | 1267 | && STRING_BYTES (XSTRING (entry)) > varlen |
012c6fcb | 1268 | && XSTRING (entry)->data[varlen] == '=' |
bad95d8f RS |
1269 | #ifdef WINDOWSNT |
1270 | /* NT environment variables are case insensitive. */ | |
a9971c6d | 1271 | && ! strnicmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1272 | #else /* not WINDOWSNT */ |
a9971c6d | 1273 | && ! bcmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1274 | #endif /* not WINDOWSNT */ |
a9971c6d | 1275 | ) |
012c6fcb JA |
1276 | { |
1277 | *value = (char *) XSTRING (entry)->data + (varlen + 1); | |
fc932ac6 | 1278 | *valuelen = STRING_BYTES (XSTRING (entry)) - (varlen + 1); |
012c6fcb JA |
1279 | return 1; |
1280 | } | |
1281 | } | |
1282 | ||
1283 | return 0; | |
1284 | } | |
1285 | ||
0ad477db | 1286 | DEFUN ("getenv", Fgetenv, Sgetenv, 1, 1, 0, |
012c6fcb JA |
1287 | "Return the value of environment variable VAR, as a string.\n\ |
1288 | VAR should be a string. Value is nil if VAR is undefined in the environment.\n\ | |
1289 | This function consults the variable ``process-environment'' for its value.") | |
1290 | (var) | |
1291 | Lisp_Object var; | |
1292 | { | |
1293 | char *value; | |
1294 | int valuelen; | |
1295 | ||
1296 | CHECK_STRING (var, 0); | |
fc932ac6 | 1297 | if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)), |
012c6fcb JA |
1298 | &value, &valuelen)) |
1299 | return make_string (value, valuelen); | |
1300 | else | |
1301 | return Qnil; | |
1302 | } | |
1303 | ||
1304 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1305 | callable from C. */ |
012c6fcb JA |
1306 | char * |
1307 | egetenv (var) | |
e576cab4 | 1308 | char *var; |
012c6fcb JA |
1309 | { |
1310 | char *value; | |
1311 | int valuelen; | |
1312 | ||
1313 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1314 | return value; | |
1315 | else | |
1316 | return 0; | |
1317 | } | |
1318 | ||
80856e74 JB |
1319 | #endif /* not VMS */ |
1320 | \f | |
8de15d69 | 1321 | /* This is run before init_cmdargs. */ |
7e6c2178 | 1322 | |
dfcf069d | 1323 | void |
8de15d69 RS |
1324 | init_callproc_1 () |
1325 | { | |
1326 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1327 | char *doc_dir = egetenv ("EMACSDOC"); |
1328 | ||
8de15d69 | 1329 | Vdata_directory |
7e6c2178 | 1330 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1331 | : PATH_DATA)); |
35a2f4b8 KH |
1332 | Vdoc_directory |
1333 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1334 | : PATH_DOC)); | |
9453ea7b | 1335 | |
e576cab4 | 1336 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1337 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1338 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1339 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1340 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1341 | } |
1342 | ||
e17f7533 | 1343 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1344 | |
dfcf069d | 1345 | void |
8de15d69 RS |
1346 | init_callproc () |
1347 | { | |
1348 | char *data_dir = egetenv ("EMACSDATA"); | |
1349 | ||
1350 | register char * sh; | |
1351 | Lisp_Object tempdir; | |
1352 | ||
9cc4fad5 | 1353 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1354 | { |
05630743 RS |
1355 | /* Add to the path the lib-src subdir of the installation dir. */ |
1356 | Lisp_Object tem; | |
1357 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1358 | Vinstallation_directory); | |
bad95d8f | 1359 | #ifndef DOS_NT |
1a6640ec | 1360 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc RS |
1361 | if (NILP (Fmember (tem, Vexec_path))) |
1362 | Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil)); | |
1363 | ||
1364 | Vexec_directory = Ffile_name_as_directory (tem); | |
bad95d8f | 1365 | #endif /* not DOS_NT */ |
8de15d69 | 1366 | |
e17f7533 RS |
1367 | /* Maybe use ../etc as well as ../lib-src. */ |
1368 | if (data_dir == 0) | |
1369 | { | |
1370 | tem = Fexpand_file_name (build_string ("etc"), | |
1371 | Vinstallation_directory); | |
1372 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1373 | } |
1374 | } | |
7e933683 RS |
1375 | |
1376 | /* Look for the files that should be in etc. We don't use | |
1377 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1378 | near the executable, and they are never in the build |
7e933683 RS |
1379 | directory when that's different from the source directory. |
1380 | ||
1381 | Instead, if these files are not in the nominal place, we try the | |
1382 | source directory. */ | |
1383 | if (data_dir == 0) | |
1384 | { | |
1385 | Lisp_Object tem, tem1, newdir; | |
1386 | ||
1387 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); | |
1388 | tem1 = Ffile_exists_p (tem); | |
1389 | if (NILP (tem1)) | |
1390 | { | |
1391 | newdir = Fexpand_file_name (build_string ("../etc/"), | |
1392 | build_string (PATH_DUMPLOADSEARCH)); | |
1393 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1394 | tem1 = Ffile_exists_p (tem); | |
1395 | if (!NILP (tem1)) | |
1396 | Vdata_directory = newdir; | |
1397 | } | |
1398 | } | |
80856e74 | 1399 | |
d883eb62 RS |
1400 | #ifndef CANNOT_DUMP |
1401 | if (initialized) | |
1402 | #endif | |
1403 | { | |
1404 | tempdir = Fdirectory_file_name (Vexec_directory); | |
1405 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
1406 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", | |
1407 | Vexec_directory); | |
1408 | } | |
80856e74 | 1409 | |
e576cab4 JB |
1410 | tempdir = Fdirectory_file_name (Vdata_directory); |
1411 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
76d5c6cf RS |
1412 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1413 | Vdata_directory); | |
e576cab4 | 1414 | |
80856e74 JB |
1415 | #ifdef VMS |
1416 | Vshell_file_name = build_string ("*dcl*"); | |
1417 | #else | |
e576cab4 | 1418 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1419 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1420 | #endif | |
8abd035b RS |
1421 | |
1422 | #ifdef VMS | |
1423 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1424 | #else | |
1425 | if (getenv ("TMPDIR")) | |
1426 | { | |
1427 | char *dir = getenv ("TMPDIR"); | |
1428 | Vtemp_file_name_pattern | |
1429 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1430 | build_string (dir)); | |
1431 | } | |
1432 | else | |
1433 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1434 | #endif | |
9fefd2ba JB |
1435 | } |
1436 | ||
dfcf069d | 1437 | void |
9fefd2ba JB |
1438 | set_process_environment () |
1439 | { | |
1440 | register char **envp; | |
80856e74 | 1441 | |
80856e74 JB |
1442 | Vprocess_environment = Qnil; |
1443 | #ifndef CANNOT_DUMP | |
1444 | if (initialized) | |
1445 | #endif | |
1446 | for (envp = environ; *envp; envp++) | |
1447 | Vprocess_environment = Fcons (build_string (*envp), | |
1448 | Vprocess_environment); | |
80856e74 JB |
1449 | } |
1450 | ||
dfcf069d | 1451 | void |
80856e74 JB |
1452 | syms_of_callproc () |
1453 | { | |
bad95d8f | 1454 | #ifdef DOS_NT |
093650fe RS |
1455 | Qbuffer_file_type = intern ("buffer-file-type"); |
1456 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1457 | #endif /* DOS_NT */ |
7e6c2178 | 1458 | |
80856e74 JB |
1459 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
1460 | "*File name to load inferior shells from.\n\ | |
1461 | Initialized from the SHELL environment variable."); | |
1462 | ||
1463 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
1464 | "*List of directories to search programs to run in subprocesses.\n\ | |
1465 | Each element is a string (directory name) or nil (try default directory)."); | |
1466 | ||
1467 | DEFVAR_LISP ("exec-directory", &Vexec_directory, | |
57ca9855 RS |
1468 | "Directory for executables for Emacs to invoke.\n\ |
1469 | More generally, this includes any architecture-dependent files\n\ | |
1470 | that are built and installed from the Emacs distribution."); | |
e576cab4 JB |
1471 | |
1472 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
57ca9855 RS |
1473 | "Directory of machine-independent files that come with GNU Emacs.\n\ |
1474 | These are files intended for Emacs to use while it runs."); | |
80856e74 | 1475 | |
35a2f4b8 KH |
1476 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
1477 | "Directory containing the DOC file that comes with GNU Emacs.\n\ | |
1478 | This is usually the same as data-directory."); | |
1479 | ||
ed61592a JB |
1480 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
1481 | "For internal use by the build procedure only.\n\ | |
1482 | This is the name of the directory in which the build procedure installed\n\ | |
1483 | Emacs's info files; the default value for Info-default-directory-list\n\ | |
1484 | includes this."); | |
1485 | Vconfigure_info_directory = build_string (PATH_INFO); | |
1486 | ||
8abd035b RS |
1487 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
1488 | "Pattern for making names for temporary files.\n\ | |
1489 | This is used by `call-process-region'."); | |
0537ec48 | 1490 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1491 | |
80856e74 | 1492 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
e576cab4 JB |
1493 | "List of environment variables for subprocesses to inherit.\n\ |
1494 | Each element should be a string of the form ENVVARNAME=VALUE.\n\ | |
1495 | The environment which Emacs inherits is placed in this variable\n\ | |
1496 | when Emacs starts."); | |
80856e74 JB |
1497 | |
1498 | #ifndef VMS | |
1499 | defsubr (&Scall_process); | |
012c6fcb | 1500 | defsubr (&Sgetenv); |
986ffb24 | 1501 | #endif |
e576cab4 | 1502 | defsubr (&Scall_process_region); |
80856e74 | 1503 | } |