Commit | Line | Data |
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80856e74 | 1 | /* Synchronous subprocess invocation for GNU Emacs. |
7bdba03c GM |
2 | Copyright (C) 1985,86,87,88,93,94,95,99, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
80856e74 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
826c56ac | 9 | the Free Software Foundation; either version 2, or (at your option) |
80856e74 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
80856e74 JB |
21 | |
22 | ||
68c45bf0 | 23 | #include <config.h> |
80856e74 | 24 | #include <signal.h> |
e576cab4 | 25 | #include <errno.h> |
565620a5 | 26 | #include <stdio.h> |
80856e74 | 27 | |
03695ace | 28 | #ifndef USE_CRT_DLL |
426b37ae | 29 | extern int errno; |
03695ace | 30 | #endif |
426b37ae | 31 | |
80856e74 JB |
32 | /* Define SIGCHLD as an alias for SIGCLD. */ |
33 | ||
34 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
35 | #define SIGCHLD SIGCLD | |
36 | #endif /* SIGCLD */ | |
37 | ||
38 | #include <sys/types.h> | |
88a64fef | 39 | |
3cbd6585 GM |
40 | #ifdef HAVE_UNISTD_H |
41 | #include <unistd.h> | |
42 | #endif | |
43 | ||
80856e74 JB |
44 | #include <sys/file.h> |
45 | #ifdef USG5 | |
472e83fe | 46 | #define INCLUDED_FCNTL |
80856e74 JB |
47 | #include <fcntl.h> |
48 | #endif | |
49 | ||
bad95d8f RS |
50 | #ifdef WINDOWSNT |
51 | #define NOMINMAX | |
52 | #include <windows.h> | |
53 | #include <stdlib.h> /* for proper declaration of environ */ | |
54 | #include <fcntl.h> | |
489f9371 | 55 | #include "w32.h" |
bad95d8f RS |
56 | #define _P_NOWAIT 1 /* from process.h */ |
57 | #endif | |
58 | ||
7e6c2178 | 59 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
472e83fe | 60 | #define INCLUDED_FCNTL |
7e6c2178 RS |
61 | #include <fcntl.h> |
62 | #include <sys/stat.h> | |
63 | #include <sys/param.h> | |
64 | #include <errno.h> | |
65 | #endif /* MSDOS */ | |
66 | ||
80856e74 JB |
67 | #ifndef O_RDONLY |
68 | #define O_RDONLY 0 | |
69 | #endif | |
70 | ||
71 | #ifndef O_WRONLY | |
72 | #define O_WRONLY 1 | |
73 | #endif | |
74 | ||
75 | #include "lisp.h" | |
76 | #include "commands.h" | |
77 | #include "buffer.h" | |
91183bfd | 78 | #include "character.h" |
edf496dd | 79 | #include "ccl.h" |
32d08644 | 80 | #include "coding.h" |
f0b950cf | 81 | #include "composite.h" |
57bda87a | 82 | #include <epaths.h> |
80856e74 | 83 | #include "process.h" |
d177f194 | 84 | #include "syssignal.h" |
a129418f | 85 | #include "systty.h" |
80856e74 | 86 | |
5f027cea EZ |
87 | #ifdef MSDOS |
88 | #include "msdos.h" | |
89 | #endif | |
90 | ||
80856e74 JB |
91 | #ifdef VMS |
92 | extern noshare char **environ; | |
93 | #else | |
03695ace | 94 | #ifndef USE_CRT_DLL |
80856e74 JB |
95 | extern char **environ; |
96 | #endif | |
03695ace | 97 | #endif |
80856e74 | 98 | |
f95c3f91 | 99 | #ifdef HAVE_SETPGID |
2b7e8799 | 100 | #if !defined (USG) || defined (BSD_PGRPS) |
320695d8 | 101 | #undef setpgrp |
f95c3f91 GM |
102 | #define setpgrp setpgid |
103 | #endif | |
2b7e8799 | 104 | #endif |
f95c3f91 | 105 | |
b81a1b72 SM |
106 | Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes; |
107 | Lisp_Object Vdata_directory, Vdoc_directory; | |
ed61592a | 108 | Lisp_Object Vconfigure_info_directory; |
8abd035b | 109 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
110 | |
111 | Lisp_Object Vshell_file_name; | |
112 | ||
80856e74 | 113 | Lisp_Object Vprocess_environment; |
80856e74 | 114 | |
bad95d8f | 115 | #ifdef DOS_NT |
093650fe | 116 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 117 | #endif /* DOS_NT */ |
093650fe | 118 | |
80856e74 JB |
119 | /* True iff we are about to fork off a synchronous process or if we |
120 | are waiting for it. */ | |
121 | int synch_process_alive; | |
122 | ||
123 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
124 | char *synch_process_death; | |
125 | ||
126 | /* If synch_process_death is zero, | |
127 | this is exit code of synchronous subprocess. */ | |
128 | int synch_process_retcode; | |
8de15d69 RS |
129 | |
130 | extern Lisp_Object Vdoc_file_name; | |
89e1ec1d | 131 | |
8d024345 | 132 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
80856e74 | 133 | \f |
37d54121 RS |
134 | /* Clean up when exiting Fcall_process. |
135 | On MSDOS, delete the temporary file on any kind of termination. | |
136 | On Unix, kill the process and any children on termination by signal. */ | |
137 | ||
138 | /* Nonzero if this is termination due to exit. */ | |
139 | static int call_process_exited; | |
140 | ||
80856e74 JB |
141 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
142 | ||
d177f194 JB |
143 | static Lisp_Object |
144 | call_process_kill (fdpid) | |
145 | Lisp_Object fdpid; | |
146 | { | |
68c45bf0 | 147 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
148 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
149 | synch_process_alive = 0; | |
150 | return Qnil; | |
151 | } | |
152 | ||
80856e74 JB |
153 | Lisp_Object |
154 | call_process_cleanup (fdpid) | |
155 | Lisp_Object fdpid; | |
156 | { | |
052062e0 | 157 | #if defined (MSDOS) || defined (macintosh) |
7e6c2178 | 158 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
159 | register Lisp_Object file; |
160 | file = Fcdr (fdpid); | |
68c45bf0 | 161 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 RS |
162 | if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) |
163 | unlink (XSTRING (file)->data); | |
052062e0 | 164 | #else /* not MSDOS and not macintosh */ |
d177f194 JB |
165 | register int pid = XFASTINT (Fcdr (fdpid)); |
166 | ||
37d54121 | 167 | if (call_process_exited) |
6b6e798b | 168 | { |
68c45bf0 | 169 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
170 | return Qnil; |
171 | } | |
37d54121 | 172 | |
d177f194 JB |
173 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
174 | { | |
175 | int count = specpdl_ptr - specpdl; | |
176 | record_unwind_protect (call_process_kill, fdpid); | |
177 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
178 | immediate_quit = 1; | |
179 | QUIT; | |
180 | wait_for_termination (pid); | |
181 | immediate_quit = 0; | |
182 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
183 | message1 ("Waiting for process to die...done"); | |
184 | } | |
80856e74 | 185 | synch_process_alive = 0; |
68c45bf0 | 186 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 187 | #endif /* not MSDOS */ |
80856e74 JB |
188 | return Qnil; |
189 | } | |
190 | ||
191 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
fdb82f93 PJ |
192 | doc: /* Call PROGRAM synchronously in separate process. |
193 | The remaining arguments are optional. | |
194 | The program's input comes from file INFILE (nil means `/dev/null'). | |
195 | Insert output in BUFFER before point; t means current buffer; | |
196 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
197 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
198 | REAL-BUFFER says what to do with standard output, as above, | |
199 | while STDERR-FILE says what to do with standard error in the child. | |
200 | STDERR-FILE may be nil (discard standard error output), | |
201 | t (mix it with ordinary output), or a file name string. | |
202 | ||
203 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
204 | Remaining arguments are strings passed as command arguments to PROGRAM. | |
205 | ||
206 | If BUFFER is 0, `call-process' returns immediately with value nil. | |
207 | Otherwise it waits for PROGRAM to terminate | |
208 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
209 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
210 | ||
211 | usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 212 | (nargs, args) |
80856e74 JB |
213 | int nargs; |
214 | register Lisp_Object *args; | |
215 | { | |
58616e67 | 216 | Lisp_Object infile, buffer, current_dir, display, path; |
80856e74 JB |
217 | int fd[2]; |
218 | int filefd; | |
219 | register int pid; | |
6e3bfbb2 RS |
220 | char buf[16384]; |
221 | char *bufptr = buf; | |
222 | int bufsize = 16384; | |
80856e74 | 223 | int count = specpdl_ptr - specpdl; |
2d607244 | 224 | |
80856e74 JB |
225 | register unsigned char **new_argv |
226 | = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
227 | struct buffer *old = current_buffer; | |
39eaa782 RS |
228 | /* File to use for stderr in the child. |
229 | t means use same as standard output. */ | |
230 | Lisp_Object error_file; | |
7e6c2178 RS |
231 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
232 | char *outf, *tempfile; | |
233 | int outfilefd; | |
234 | #endif | |
052062e0 RS |
235 | #ifdef macintosh |
236 | char *tempfile; | |
237 | int outfilefd; | |
238 | #endif | |
80856e74 JB |
239 | #if 0 |
240 | int mask; | |
241 | #endif | |
32d08644 KH |
242 | struct coding_system process_coding; /* coding-system of process output */ |
243 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
244 | /* Set to the return value of Ffind_operation_coding_system. */ |
245 | Lisp_Object coding_systems; | |
246 | ||
247 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
248 | coding_systems = Qt; | |
32d08644 | 249 | |
b7826503 | 250 | CHECK_STRING (args[0]); |
80856e74 | 251 | |
39eaa782 RS |
252 | error_file = Qt; |
253 | ||
7e6c2178 RS |
254 | #ifndef subprocesses |
255 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
3ffde7d6 | 256 | if (nargs >= 3 |
09ffb8b5 | 257 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
258 | error ("Operating system cannot handle asynchronous subprocesses"); |
259 | #endif /* subprocesses */ | |
260 | ||
09494912 | 261 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
262 | { |
263 | Lisp_Object val, *args2; | |
32d08644 KH |
264 | int i; |
265 | ||
266 | /* If arguments are supplied, we may have to encode them. */ | |
267 | if (nargs >= 5) | |
268 | { | |
30d57b8e RS |
269 | int must_encode = 0; |
270 | ||
e7c1c20e | 271 | for (i = 4; i < nargs; i++) |
b7826503 | 272 | CHECK_STRING (args[i]); |
e7c1c20e | 273 | |
a2286b5c | 274 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
275 | if (STRING_MULTIBYTE (args[i])) |
276 | must_encode = 1; | |
277 | ||
beacaab3 KH |
278 | if (!NILP (Vcoding_system_for_write)) |
279 | val = Vcoding_system_for_write; | |
30d57b8e | 280 | else if (! must_encode) |
beacaab3 KH |
281 | val = Qnil; |
282 | else | |
32d08644 KH |
283 | { |
284 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
285 | args2[0] = Qcall_process; | |
286 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 287 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 288 | if (CONSP (coding_systems)) |
70949dac | 289 | val = XCDR (coding_systems); |
776b95cb | 290 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 291 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
292 | else |
293 | val = Qnil; | |
32d08644 KH |
294 | } |
295 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); | |
296 | } | |
32d08644 KH |
297 | } |
298 | ||
e576cab4 JB |
299 | if (nargs >= 2 && ! NILP (args[1])) |
300 | { | |
301 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
b7826503 | 302 | CHECK_STRING (infile); |
e576cab4 | 303 | } |
80856e74 | 304 | else |
5437e9f9 | 305 | infile = build_string (NULL_DEVICE); |
80856e74 | 306 | |
e576cab4 JB |
307 | if (nargs >= 3) |
308 | { | |
39eaa782 RS |
309 | buffer = args[2]; |
310 | ||
311 | /* If BUFFER is a list, its meaning is | |
312 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
313 | if (CONSP (buffer)) | |
314 | { | |
70949dac | 315 | if (CONSP (XCDR (buffer))) |
45be8a1e | 316 | { |
a9d4f28a | 317 | Lisp_Object stderr_file; |
70949dac | 318 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
319 | |
320 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
321 | error_file = stderr_file; | |
322 | else | |
323 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
324 | } | |
325 | ||
70949dac | 326 | buffer = XCAR (buffer); |
39eaa782 | 327 | } |
044512ed | 328 | |
39eaa782 RS |
329 | if (!(EQ (buffer, Qnil) |
330 | || EQ (buffer, Qt) | |
3ffde7d6 | 331 | || INTEGERP (buffer))) |
e576cab4 | 332 | { |
39eaa782 RS |
333 | Lisp_Object spec_buffer; |
334 | spec_buffer = buffer; | |
50fe359b | 335 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
336 | /* Mention the buffer name for a better error message. */ |
337 | if (NILP (buffer)) | |
b7826503 PJ |
338 | CHECK_BUFFER (spec_buffer); |
339 | CHECK_BUFFER (buffer); | |
e576cab4 JB |
340 | } |
341 | } | |
342 | else | |
343 | buffer = Qnil; | |
80856e74 | 344 | |
58616e67 JB |
345 | /* Make sure that the child will be able to chdir to the current |
346 | buffer's current directory, or its unhandled equivalent. We | |
347 | can't just have the child check for an error when it does the | |
348 | chdir, since it's in a vfork. | |
349 | ||
350 | We have to GCPRO around this because Fexpand_file_name, | |
351 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
352 | might call a file name handling function. The argument list is | |
353 | protected by the caller, so all we really have to worry about is | |
354 | buffer. */ | |
355 | { | |
356 | struct gcpro gcpro1, gcpro2, gcpro3; | |
357 | ||
358 | current_dir = current_buffer->directory; | |
359 | ||
360 | GCPRO3 (infile, buffer, current_dir); | |
361 | ||
c52b0b34 KH |
362 | current_dir |
363 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
364 | Qnil); | |
58616e67 JB |
365 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
366 | report_file_error ("Setting current directory", | |
367 | Fcons (current_buffer->directory, Qnil)); | |
368 | ||
369 | UNGCPRO; | |
370 | } | |
371 | ||
e576cab4 | 372 | display = nargs >= 4 ? args[3] : Qnil; |
80856e74 | 373 | |
68c45bf0 | 374 | filefd = emacs_open (XSTRING (infile)->data, O_RDONLY, 0); |
80856e74 JB |
375 | if (filefd < 0) |
376 | { | |
e576cab4 | 377 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
378 | } |
379 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
380 | { |
381 | struct gcpro gcpro1; | |
382 | ||
383 | GCPRO1 (current_dir); | |
b81a1b72 | 384 | openp (Vexec_path, args[0], Vexec_suffixes, &path, 1); |
c52b0b34 KH |
385 | UNGCPRO; |
386 | } | |
012c6fcb | 387 | if (NILP (path)) |
80856e74 | 388 | { |
68c45bf0 | 389 | emacs_close (filefd); |
80856e74 JB |
390 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
391 | } | |
392 | new_argv[0] = XSTRING (path)->data; | |
c364e618 KH |
393 | if (nargs > 4) |
394 | { | |
395 | register int i; | |
c5bfa12b | 396 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 397 | |
c5bfa12b KH |
398 | GCPRO3 (infile, buffer, current_dir); |
399 | argument_coding.dst_multibyte = 0; | |
400 | for (i = 4; i < nargs; i++) | |
c364e618 | 401 | { |
c5bfa12b KH |
402 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
403 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
91183bfd KH |
404 | /* We must encode this argument. */ |
405 | args[i] = encode_coding_string (&argument_coding, args[i], 1); | |
c5bfa12b | 406 | new_argv[i - 3] = XSTRING (args[i])->data; |
c364e618 | 407 | } |
c5bfa12b | 408 | UNGCPRO; |
db54baaa | 409 | new_argv[nargs - 3] = 0; |
c364e618 | 410 | } |
db54baaa KH |
411 | else |
412 | new_argv[1] = 0; | |
80856e74 | 413 | |
7e6c2178 | 414 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 415 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
416 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
417 | else | |
418 | { | |
419 | tempfile = alloca (20); | |
420 | *tempfile = '\0'; | |
421 | } | |
422 | dostounix_filename (tempfile); | |
423 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') | |
424 | strcat (tempfile, "/"); | |
425 | strcat (tempfile, "detmp.XXX"); | |
426 | mktemp (tempfile); | |
427 | ||
428 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
429 | if (outfilefd < 0) | |
430 | { | |
68c45bf0 | 431 | emacs_close (filefd); |
6f89d28a MB |
432 | report_file_error ("Opening process output file", |
433 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 434 | } |
6f89d28a | 435 | fd[0] = filefd; |
2610078a | 436 | fd[1] = outfilefd; |
6f89d28a | 437 | #endif /* MSDOS */ |
7e6c2178 | 438 | |
052062e0 RS |
439 | #ifdef macintosh |
440 | /* Since we don't have pipes on the Mac, create a temporary file to | |
441 | hold the output of the subprocess. */ | |
442 | tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
443 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, | |
444 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
445 | ||
446 | mktemp (tempfile); | |
447 | ||
448 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
449 | if (outfilefd < 0) | |
450 | { | |
451 | close (filefd); | |
452 | report_file_error ("Opening process output file", | |
453 | Fcons (build_string (tempfile), Qnil)); | |
454 | } | |
455 | fd[0] = filefd; | |
456 | fd[1] = outfilefd; | |
457 | #endif /* macintosh */ | |
458 | ||
d50d3dc8 | 459 | if (INTEGERP (buffer)) |
68c45bf0 | 460 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
461 | else |
462 | { | |
7e6c2178 | 463 | #ifndef MSDOS |
052062e0 | 464 | #ifndef macintosh |
db92b288 GM |
465 | errno = 0; |
466 | if (pipe (fd) == -1) | |
467 | { | |
468 | emacs_close (filefd); | |
469 | report_file_error ("Creating process pipe", Qnil); | |
470 | } | |
7e6c2178 | 471 | #endif |
052062e0 | 472 | #endif |
80856e74 JB |
473 | #if 0 |
474 | /* Replaced by close_process_descs */ | |
475 | set_exclusive_use (fd[0]); | |
476 | #endif | |
477 | } | |
478 | ||
479 | { | |
480 | /* child_setup must clobber environ in systems with true vfork. | |
481 | Protect it from permanent change. */ | |
482 | register char **save_environ = environ; | |
483 | register int fd1 = fd[1]; | |
39eaa782 | 484 | int fd_error = fd1; |
80856e74 JB |
485 | |
486 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 487 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
488 | #endif |
489 | ||
490 | /* Record that we're about to create a synchronous process. */ | |
491 | synch_process_alive = 1; | |
492 | ||
5c03767e RS |
493 | /* These vars record information from process termination. |
494 | Clear them now before process can possibly terminate, | |
495 | to avoid timing error if process terminates soon. */ | |
496 | synch_process_death = 0; | |
497 | synch_process_retcode = 0; | |
498 | ||
39eaa782 | 499 | if (NILP (error_file)) |
68c45bf0 | 500 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
501 | else if (STRINGP (error_file)) |
502 | { | |
503 | #ifdef DOS_NT | |
68c45bf0 PE |
504 | fd_error = emacs_open (XSTRING (error_file)->data, |
505 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
506 | S_IREAD | S_IWRITE); | |
39eaa782 RS |
507 | #else /* not DOS_NT */ |
508 | fd_error = creat (XSTRING (error_file)->data, 0666); | |
509 | #endif /* not DOS_NT */ | |
510 | } | |
511 | ||
512 | if (fd_error < 0) | |
513 | { | |
68c45bf0 | 514 | emacs_close (filefd); |
6f89d28a | 515 | if (fd[0] != filefd) |
68c45bf0 | 516 | emacs_close (fd[0]); |
39eaa782 | 517 | if (fd1 >= 0) |
68c45bf0 | 518 | emacs_close (fd1); |
6f89d28a MB |
519 | #ifdef MSDOS |
520 | unlink (tempfile); | |
521 | #endif | |
522 | report_file_error ("Cannot redirect stderr", | |
523 | Fcons ((NILP (error_file) | |
524 | ? build_string (NULL_DEVICE) : error_file), | |
525 | Qnil)); | |
39eaa782 | 526 | } |
89e1ec1d | 527 | |
8d024345 | 528 | current_dir = ENCODE_FILE (current_dir); |
89e1ec1d | 529 | |
052062e0 RS |
530 | #ifdef macintosh |
531 | { | |
532 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
533 | a child_setup as for MSDOS and other platforms. Note that this | |
534 | code does not handle passing the environment to the synchronous | |
535 | Mac subprocess. */ | |
536 | char *infn, *outfn, *errfn, *currdn; | |
537 | ||
538 | /* close these files so subprocess can write to them */ | |
539 | close (outfilefd); | |
540 | if (fd_error != outfilefd) | |
541 | close (fd_error); | |
542 | fd1 = -1; /* No harm in closing that one! */ | |
543 | ||
544 | infn = XSTRING (infile)->data; | |
545 | outfn = tempfile; | |
546 | if (NILP (error_file)) | |
547 | errfn = NULL_DEVICE; | |
548 | else if (EQ (Qt, error_file)) | |
549 | errfn = outfn; | |
550 | else | |
551 | errfn = XSTRING (error_file)->data; | |
552 | currdn = XSTRING (current_dir)->data; | |
553 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); | |
554 | ||
555 | /* Record that the synchronous process exited and note its | |
556 | termination status. */ | |
557 | synch_process_alive = 0; | |
558 | synch_process_retcode = pid; | |
559 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 560 | { |
ca9c0567 | 561 | synchronize_system_messages_locale (); |
68c45bf0 PE |
562 | synch_process_death = strerror (errno); |
563 | } | |
052062e0 RS |
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 */ | |
68c45bf0 | 588 | { |
ca9c0567 | 589 | synchronize_system_messages_locale (); |
68c45bf0 PE |
590 | synch_process_death = strerror (errno); |
591 | } | |
2610078a | 592 | |
68c45bf0 | 593 | emacs_close (outfilefd); |
2610078a | 594 | if (fd_error != outfilefd) |
68c45bf0 | 595 | emacs_close (fd_error); |
2610078a | 596 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
597 | /* Since CRLF is converted to LF within `decode_coding', we can |
598 | always open a file with binary mode. */ | |
68c45bf0 | 599 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
600 | if (fd[0] < 0) |
601 | { | |
602 | unlink (tempfile); | |
68c45bf0 | 603 | emacs_close (filefd); |
2610078a KH |
604 | report_file_error ("Cannot re-open temporary file", Qnil); |
605 | } | |
606 | #else /* not MSDOS */ | |
bad95d8f | 607 | #ifdef WINDOWSNT |
2d607244 RS |
608 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
609 | 0, current_dir); | |
bad95d8f | 610 | #else /* not WINDOWSNT */ |
80856e74 JB |
611 | pid = vfork (); |
612 | ||
613 | if (pid == 0) | |
614 | { | |
615 | if (fd[0] >= 0) | |
68c45bf0 | 616 | emacs_close (fd[0]); |
1e7963c7 RS |
617 | #ifdef HAVE_SETSID |
618 | setsid (); | |
619 | #endif | |
620 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
621 | setpgrp (); |
622 | #else | |
623 | setpgrp (pid, pid); | |
624 | #endif /* USG */ | |
2d607244 RS |
625 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
626 | 0, current_dir); | |
80856e74 | 627 | } |
bad95d8f | 628 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
629 | |
630 | /* The MSDOS case did this already. */ | |
631 | if (fd_error >= 0) | |
68c45bf0 | 632 | emacs_close (fd_error); |
2610078a | 633 | #endif /* not MSDOS */ |
052062e0 | 634 | #endif /* not macintosh */ |
80856e74 | 635 | |
80856e74 JB |
636 | environ = save_environ; |
637 | ||
6b6e798b RS |
638 | /* Close most of our fd's, but not fd[0] |
639 | since we will use that to read input from. */ | |
68c45bf0 | 640 | emacs_close (filefd); |
799abb26 | 641 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 642 | emacs_close (fd1); |
80856e74 JB |
643 | } |
644 | ||
645 | if (pid < 0) | |
646 | { | |
6b6e798b | 647 | if (fd[0] >= 0) |
68c45bf0 | 648 | emacs_close (fd[0]); |
80856e74 JB |
649 | report_file_error ("Doing vfork", Qnil); |
650 | } | |
651 | ||
d50d3dc8 | 652 | if (INTEGERP (buffer)) |
80856e74 | 653 | { |
6b6e798b | 654 | if (fd[0] >= 0) |
68c45bf0 | 655 | emacs_close (fd[0]); |
80856e74 | 656 | #ifndef subprocesses |
e576cab4 JB |
657 | /* If Emacs has been built with asynchronous subprocess support, |
658 | we don't need to do this, I think because it will then have | |
659 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
660 | wait_without_blocking (); |
661 | #endif /* subprocesses */ | |
80856e74 JB |
662 | return Qnil; |
663 | } | |
664 | ||
6b6e798b | 665 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
666 | call_process_exited = 0; |
667 | ||
052062e0 | 668 | #if defined(MSDOS) || defined(macintosh) |
7e6c2178 RS |
669 | /* MSDOS needs different cleanup information. */ |
670 | record_unwind_protect (call_process_cleanup, | |
671 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
672 | #else | |
80856e74 JB |
673 | record_unwind_protect (call_process_cleanup, |
674 | Fcons (make_number (fd[0]), make_number (pid))); | |
052062e0 | 675 | #endif /* not MSDOS and not macintosh */ |
80856e74 JB |
676 | |
677 | ||
d50d3dc8 | 678 | if (BUFFERP (buffer)) |
80856e74 JB |
679 | Fset_buffer (buffer); |
680 | ||
09494912 RS |
681 | if (NILP (buffer)) |
682 | { | |
683 | /* If BUFFER is nil, we must read process output once and then | |
684 | discard it, so setup coding system but with nil. */ | |
685 | setup_coding_system (Qnil, &process_coding); | |
686 | } | |
687 | else | |
688 | { | |
689 | Lisp_Object val, *args2; | |
690 | ||
691 | val = Qnil; | |
692 | if (!NILP (Vcoding_system_for_read)) | |
693 | val = Vcoding_system_for_read; | |
694 | else | |
695 | { | |
696 | if (EQ (coding_systems, Qt)) | |
697 | { | |
698 | int i; | |
699 | ||
700 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
701 | args2[0] = Qcall_process; | |
702 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
703 | coding_systems | |
704 | = Ffind_operation_coding_system (nargs + 1, args2); | |
705 | } | |
706 | if (CONSP (coding_systems)) | |
70949dac | 707 | val = XCAR (coding_systems); |
09494912 | 708 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 709 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
710 | else |
711 | val = Qnil; | |
712 | } | |
91183bfd | 713 | Fcheck_coding_system (val); |
09494912 RS |
714 | /* In unibyte mode, character code conversion should not take |
715 | place but EOL conversion should. So, setup raw-text or one | |
716 | of the subsidiary according to the information just setup. */ | |
717 | if (NILP (current_buffer->enable_multibyte_characters) | |
718 | && !NILP (val)) | |
91183bfd KH |
719 | val = raw_text_coding_system (val); |
720 | setup_coding_system (val, &process_coding); | |
09494912 RS |
721 | } |
722 | ||
80856e74 JB |
723 | immediate_quit = 1; |
724 | QUIT; | |
725 | ||
726 | { | |
727 | register int nread; | |
0ad477db | 728 | int first = 1; |
6e3bfbb2 | 729 | int total_read = 0; |
321fecde | 730 | int carryover = 0; |
7a7ab107 | 731 | int display_on_the_fly = !NILP (display) && INTERACTIVE; |
05b44e90 KH |
732 | struct coding_system saved_coding; |
733 | ||
734 | saved_coding = process_coding; | |
60558b19 | 735 | while (1) |
80856e74 | 736 | { |
60558b19 RS |
737 | /* Repeatedly read until we've filled as much as possible |
738 | of the buffer size we have. But don't read | |
8e6208c5 | 739 | less than 1024--save that for the next bufferful. */ |
321fecde | 740 | nread = carryover; |
60558b19 | 741 | while (nread < bufsize - 1024) |
00fb3e95 | 742 | { |
68c45bf0 PE |
743 | int this_read = emacs_read (fd[0], bufptr + nread, |
744 | bufsize - nread); | |
60558b19 RS |
745 | |
746 | if (this_read < 0) | |
747 | goto give_up; | |
748 | ||
749 | if (this_read == 0) | |
7a7ab107 KH |
750 | { |
751 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
752 | break; | |
753 | } | |
60558b19 RS |
754 | |
755 | nread += this_read; | |
7a7ab107 | 756 | total_read += this_read; |
60558b19 | 757 | |
7a7ab107 KH |
758 | if (display_on_the_fly) |
759 | break; | |
760 | } | |
60558b19 RS |
761 | |
762 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 763 | immediate_quit = 0; |
6e3bfbb2 | 764 | |
012c6fcb | 765 | if (!NILP (buffer)) |
32d08644 | 766 | { |
bb4a3884 KH |
767 | if (NILP (current_buffer->enable_multibyte_characters) |
768 | && ! CODING_MAY_REQUIRE_DECODING (&process_coding)) | |
c5bfa12b | 769 | insert_1_both (bufptr, nread, nread, 0, 1, 0); |
32d08644 KH |
770 | else |
771 | { /* We have to decode the input. */ | |
ea99bcc1 KH |
772 | Lisp_Object buf; |
773 | ||
774 | XSETBUFFER (buf, current_buffer); | |
91183bfd | 775 | decode_coding_c_string (&process_coding, bufptr, nread, |
ea99bcc1 | 776 | buf); |
7a7ab107 | 777 | if (display_on_the_fly |
91183bfd KH |
778 | && CODING_REQUIRE_DETECTION (&saved_coding) |
779 | && ! CODING_REQUIRE_DETECTION (&process_coding)) | |
7a7ab107 KH |
780 | { |
781 | /* We have detected some coding system. But, | |
782 | there's a possibility that the detection was | |
783 | done by insufficient data. So, we give up | |
784 | displaying on the fly. */ | |
91183bfd KH |
785 | if (process_coding.produced > 0) |
786 | del_range_2 (process_coding.dst_pos, | |
787 | process_coding.dst_pos_byte, | |
788 | process_coding.dst_pos | |
789 | + process_coding.produced_char, | |
790 | process_coding.dst_pos_byte | |
791 | + process_coding.produced, 0); | |
7a7ab107 KH |
792 | display_on_the_fly = 0; |
793 | process_coding = saved_coding; | |
794 | carryover = nread; | |
795 | continue; | |
796 | } | |
7bdba03c | 797 | |
ea99bcc1 KH |
798 | TEMP_SET_PT_BOTH (PT + process_coding.produced_char, |
799 | PT_BYTE + process_coding.produced); | |
f0b950cf KH |
800 | nread -= process_coding.consumed; |
801 | carryover = nread; | |
321fecde | 802 | if (carryover > 0) |
c5bfa12b KH |
803 | /* As CARRYOVER should not be that large, we had |
804 | better avoid overhead of bcopy. */ | |
805 | BCOPY_SHORT (bufptr + process_coding.consumed, bufptr, | |
806 | carryover); | |
32d08644 KH |
807 | } |
808 | } | |
c5bfa12b | 809 | |
321fecde | 810 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 811 | break; |
6e3bfbb2 RS |
812 | |
813 | /* Make the buffer bigger as we continue to read more data, | |
814 | but not past 64k. */ | |
815 | if (bufsize < 64 * 1024 && total_read > 32 * bufsize) | |
816 | { | |
7ec8aa3f | 817 | char *tempptr; |
6e3bfbb2 | 818 | bufsize *= 2; |
7ec8aa3f RS |
819 | |
820 | tempptr = (char *) alloca (bufsize); | |
821 | bcopy (bufptr, tempptr, bufsize / 2); | |
822 | bufptr = tempptr; | |
6e3bfbb2 RS |
823 | } |
824 | ||
012c6fcb | 825 | if (!NILP (display) && INTERACTIVE) |
0ad477db RS |
826 | { |
827 | if (first) | |
828 | prepare_menu_bars (); | |
829 | first = 0; | |
3007ebfb | 830 | redisplay_preserve_echo_area (1); |
0ad477db | 831 | } |
80856e74 JB |
832 | immediate_quit = 1; |
833 | QUIT; | |
834 | } | |
60558b19 | 835 | give_up: ; |
80856e74 | 836 | |
91183bfd KH |
837 | Vlast_coding_system_used = CODING_ID_NAME (process_coding.id); |
838 | /* If the caller required, let the buffer inherit the | |
839 | coding-system used to decode the process output. */ | |
840 | if (inherit_process_coding_system) | |
841 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
838c9726 | 842 | make_number (total_read)); |
3b440bb5 EZ |
843 | } |
844 | ||
80856e74 JB |
845 | /* Wait for it to terminate, unless it already has. */ |
846 | wait_for_termination (pid); | |
847 | ||
848 | immediate_quit = 0; | |
849 | ||
850 | set_buffer_internal (old); | |
851 | ||
37d54121 RS |
852 | /* Don't kill any children that the subprocess may have left behind |
853 | when exiting. */ | |
854 | call_process_exited = 1; | |
855 | ||
80856e74 JB |
856 | unbind_to (count, Qnil); |
857 | ||
80856e74 | 858 | if (synch_process_death) |
68c45bf0 PE |
859 | return code_convert_string_norecord (build_string (synch_process_death), |
860 | Vlocale_coding_system, 0); | |
80856e74 JB |
861 | return make_number (synch_process_retcode); |
862 | } | |
863 | #endif | |
864 | \f | |
9fefd2ba | 865 | static Lisp_Object |
80856e74 JB |
866 | delete_temp_file (name) |
867 | Lisp_Object name; | |
868 | { | |
2e3dc201 | 869 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 870 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 871 | internal_delete_file (name); |
320695d8 | 872 | return Qnil; |
80856e74 JB |
873 | } |
874 | ||
875 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
fdb82f93 PJ |
876 | 3, MANY, 0, |
877 | doc: /* Send text from START to END to a synchronous process running PROGRAM. | |
878 | The remaining arguments are optional. | |
879 | Delete the text if fourth arg DELETE is non-nil. | |
880 | ||
881 | Insert output in BUFFER before point; t means current buffer; | |
882 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
883 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
884 | REAL-BUFFER says what to do with standard output, as above, | |
885 | while STDERR-FILE says what to do with standard error in the child. | |
886 | STDERR-FILE may be nil (discard standard error output), | |
887 | t (mix it with ordinary output), or a file name string. | |
888 | ||
889 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
890 | Remaining args are passed to PROGRAM at startup as command args. | |
891 | ||
892 | If BUFFER is nil, `call-process-region' returns immediately with value nil. | |
893 | Otherwise it waits for PROGRAM to terminate | |
894 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
895 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
896 | ||
897 | usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 898 | (nargs, args) |
80856e74 JB |
899 | int nargs; |
900 | register Lisp_Object *args; | |
901 | { | |
39323a7e KH |
902 | struct gcpro gcpro1; |
903 | Lisp_Object filename_string; | |
904 | register Lisp_Object start, end; | |
d3e81d0a | 905 | int count = specpdl_ptr - specpdl; |
08ee4e87 | 906 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 907 | Lisp_Object coding_systems; |
32d08644 KH |
908 | Lisp_Object val, *args2; |
909 | int i; | |
bad95d8f | 910 | #ifdef DOS_NT |
7e6c2178 | 911 | char *tempfile; |
7e6c2178 RS |
912 | char *outf = '\0'; |
913 | ||
8a52365c EZ |
914 | if ((outf = egetenv ("TMPDIR")) |
915 | || (outf = egetenv ("TMP")) | |
916 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
917 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
918 | else | |
919 | { | |
920 | tempfile = alloca (20); | |
921 | *tempfile = '\0'; | |
922 | } | |
0774fcf8 | 923 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 924 | strcat (tempfile, "/"); |
5711b547 RS |
925 | if ('/' == DIRECTORY_SEP) |
926 | dostounix_filename (tempfile); | |
927 | else | |
928 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
929 | #ifdef WINDOWSNT |
930 | strcat (tempfile, "emXXXXXX"); | |
931 | #else | |
7e6c2178 | 932 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 933 | #endif |
bad95d8f | 934 | #else /* not DOS_NT */ |
fc932ac6 | 935 | char *tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
8abd035b | 936 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, |
fc932ac6 | 937 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
bad95d8f | 938 | #endif /* not DOS_NT */ |
7e6c2178 | 939 | |
09494912 RS |
940 | coding_systems = Qt; |
941 | ||
1ddc85a4 DL |
942 | #ifdef HAVE_MKSTEMP |
943 | { | |
944 | int fd = mkstemp (tempfile); | |
945 | if (fd == -1) | |
946 | report_file_error ("Failed to open temporary file", | |
947 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
948 | else | |
949 | close (fd); | |
950 | } | |
951 | #else | |
80856e74 | 952 | mktemp (tempfile); |
1ddc85a4 | 953 | #endif |
80856e74 JB |
954 | |
955 | filename_string = build_string (tempfile); | |
39323a7e | 956 | GCPRO1 (filename_string); |
80856e74 JB |
957 | start = args[0]; |
958 | end = args[1]; | |
32d08644 | 959 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
960 | if (!NILP (Vcoding_system_for_write)) |
961 | val = Vcoding_system_for_write; | |
962 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
963 | val = Qnil; |
964 | else | |
beacaab3 | 965 | { |
91489411 RS |
966 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
967 | args2[0] = Qcall_process_region; | |
968 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
969 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
970 | if (CONSP (coding_systems)) | |
70949dac | 971 | val = XCDR (coding_systems); |
91489411 | 972 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 973 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 974 | else |
91489411 | 975 | val = Qnil; |
beacaab3 | 976 | } |
32d08644 | 977 | |
168afdaa RS |
978 | { |
979 | int count1 = specpdl_ptr - specpdl; | |
980 | ||
981 | specbind (intern ("coding-system-for-write"), val); | |
982 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); | |
983 | ||
984 | unbind_to (count1, Qnil); | |
985 | } | |
91489411 RS |
986 | |
987 | /* Note that Fcall_process takes care of binding | |
988 | coding-system-for-read. */ | |
093650fe | 989 | |
80856e74 JB |
990 | record_unwind_protect (delete_temp_file, filename_string); |
991 | ||
edf496dd | 992 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
993 | Fdelete_region (start, end); |
994 | ||
edf496dd KH |
995 | if (nargs > 3) |
996 | { | |
997 | args += 2; | |
998 | nargs -= 2; | |
999 | } | |
1000 | else | |
1001 | { | |
1002 | args[0] = args[2]; | |
1003 | nargs = 2; | |
1004 | } | |
1005 | args[1] = filename_string; | |
80856e74 | 1006 | |
edf496dd | 1007 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
1008 | } |
1009 | \f | |
1010 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
1011 | ||
dfcf069d AS |
1012 | static int relocate_fd (); |
1013 | ||
80856e74 JB |
1014 | /* This is the last thing run in a newly forked inferior |
1015 | either synchronous or asynchronous. | |
1016 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1017 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1018 | then exec another program based on new_argv. | |
1019 | ||
1020 | This function may change environ for the superior process. | |
1021 | Therefore, the superior process must save and restore the value | |
1022 | of environ around the vfork and the call to this function. | |
1023 | ||
80856e74 | 1024 | SET_PGRP is nonzero if we should put the subprocess into a separate |
e576cab4 JB |
1025 | process group. |
1026 | ||
1027 | CURRENT_DIR is an elisp string giving the path of the current | |
1028 | directory the subprocess should have. Since we can't really signal | |
1029 | a decent error from within the child, this should be verified as an | |
1030 | executable directory by the parent. */ | |
80856e74 | 1031 | |
dfcf069d | 1032 | int |
e576cab4 | 1033 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1034 | int in, out, err; |
1035 | register char **new_argv; | |
80856e74 | 1036 | int set_pgrp; |
e576cab4 | 1037 | Lisp_Object current_dir; |
80856e74 | 1038 | { |
e576cab4 | 1039 | char **env; |
7fcf7f05 | 1040 | char *pwd_var; |
bad95d8f RS |
1041 | #ifdef WINDOWSNT |
1042 | int cpid; | |
4252a4bd | 1043 | HANDLE handles[3]; |
bad95d8f | 1044 | #endif /* WINDOWSNT */ |
e576cab4 | 1045 | |
33abe2d9 | 1046 | int pid = getpid (); |
80856e74 | 1047 | |
68d10241 | 1048 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 JB |
1049 | { |
1050 | extern int emacs_priority; | |
1051 | ||
68d10241 RS |
1052 | if (emacs_priority < 0) |
1053 | nice (- emacs_priority); | |
4f0b9d49 | 1054 | } |
5b633aeb | 1055 | #endif |
80856e74 JB |
1056 | |
1057 | #ifdef subprocesses | |
1058 | /* Close Emacs's descriptors that this process should not have. */ | |
1059 | close_process_descs (); | |
1060 | #endif | |
c17c4250 EZ |
1061 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1062 | we will lose if we call close_load_descs here. */ | |
1063 | #ifndef DOS_NT | |
4458cebe | 1064 | close_load_descs (); |
c17c4250 | 1065 | #endif |
80856e74 JB |
1066 | |
1067 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1068 | that do not have true vfork or that have true (stack) alloca. | |
1069 | If using vfork and C_ALLOCA it is safe because that changes | |
1070 | the superior's static variables as if the superior had done alloca | |
1071 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1072 | { |
7fcf7f05 | 1073 | register char *temp; |
e576cab4 | 1074 | register int i; |
77d78be1 | 1075 | |
fc932ac6 | 1076 | i = STRING_BYTES (XSTRING (current_dir)); |
16425c4a EZ |
1077 | #ifdef MSDOS |
1078 | /* MSDOS must have all environment variables malloc'ed, because | |
1079 | low-level libc functions that launch subsidiary processes rely | |
1080 | on that. */ | |
1081 | pwd_var = (char *) xmalloc (i + 6); | |
1082 | #else | |
7fcf7f05 | 1083 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1084 | #endif |
7fcf7f05 RS |
1085 | temp = pwd_var + 4; |
1086 | bcopy ("PWD=", pwd_var, 4); | |
e576cab4 | 1087 | bcopy (XSTRING (current_dir)->data, temp, i); |
bad95d8f | 1088 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1089 | temp[i] = 0; |
1090 | ||
c17c4250 | 1091 | #ifndef DOS_NT |
e576cab4 JB |
1092 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1093 | the callers check the current directory before forking, this | |
1094 | should only return an error if the directory's permissions | |
1095 | are changed between the check and this chdir, but we should | |
1096 | at least check. */ | |
1097 | if (chdir (temp) < 0) | |
20b25e46 | 1098 | _exit (errno); |
b4c7684c | 1099 | #endif |
7fcf7f05 | 1100 | |
c17c4250 EZ |
1101 | #ifdef DOS_NT |
1102 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1103 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1104 | { | |
1105 | temp += 2; | |
1106 | i -= 2; | |
1107 | } | |
1108 | #endif | |
1109 | ||
7fcf7f05 | 1110 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1111 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1112 | temp[--i] = 0; |
e576cab4 | 1113 | } |
80856e74 | 1114 | |
80856e74 JB |
1115 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1116 | { | |
1117 | register Lisp_Object tem; | |
1118 | register char **new_env; | |
1119 | register int new_length; | |
1120 | ||
1121 | new_length = 0; | |
1122 | for (tem = Vprocess_environment; | |
70949dac KR |
1123 | CONSP (tem) && STRINGP (XCAR (tem)); |
1124 | tem = XCDR (tem)) | |
80856e74 JB |
1125 | new_length++; |
1126 | ||
7fcf7f05 RS |
1127 | /* new_length + 2 to include PWD and terminating 0. */ |
1128 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1129 | ||
1130 | /* If we have a PWD envvar, pass one down, | |
1131 | but with corrected value. */ | |
1132 | if (getenv ("PWD")) | |
1133 | *new_env++ = pwd_var; | |
80856e74 | 1134 | |
cd9565ba | 1135 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1136 | for (tem = Vprocess_environment; |
70949dac KR |
1137 | CONSP (tem) && STRINGP (XCAR (tem)); |
1138 | tem = XCDR (tem)) | |
cd9565ba RS |
1139 | { |
1140 | char **ep = env; | |
70949dac | 1141 | char *string = (char *) XSTRING (XCAR (tem))->data; |
cd9565ba RS |
1142 | /* See if this string duplicates any string already in the env. |
1143 | If so, don't put it in. | |
1144 | When an env var has multiple definitions, | |
1145 | we keep the definition that comes first in process-environment. */ | |
1146 | for (; ep != new_env; ep++) | |
1147 | { | |
1148 | char *p = *ep, *q = string; | |
1149 | while (1) | |
1150 | { | |
1151 | if (*q == 0) | |
1152 | /* The string is malformed; might as well drop it. */ | |
1153 | goto duplicate; | |
1154 | if (*q != *p) | |
1155 | break; | |
1156 | if (*q == '=') | |
1157 | goto duplicate; | |
1158 | p++, q++; | |
1159 | } | |
1160 | } | |
1161 | *new_env++ = string; | |
1162 | duplicate: ; | |
1163 | } | |
80856e74 JB |
1164 | *new_env = 0; |
1165 | } | |
bad95d8f RS |
1166 | #ifdef WINDOWSNT |
1167 | prepare_standard_handles (in, out, err, handles); | |
b4c7684c | 1168 | set_process_dir (XSTRING (current_dir)->data); |
bad95d8f | 1169 | #else /* not WINDOWSNT */ |
426b37ae JB |
1170 | /* Make sure that in, out, and err are not actually already in |
1171 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1172 | started with its standard in, out, or error closed, as might |
426b37ae | 1173 | happen under X. */ |
f29f9e4a RS |
1174 | { |
1175 | int oin = in, oout = out; | |
1176 | ||
1177 | /* We have to avoid relocating the same descriptor twice! */ | |
1178 | ||
1179 | in = relocate_fd (in, 3); | |
1180 | ||
1181 | if (out == oin) | |
1182 | out = in; | |
1183 | else | |
3e9367e7 | 1184 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1185 | |
1186 | if (err == oin) | |
1187 | err = in; | |
1188 | else if (err == oout) | |
1189 | err = out; | |
1190 | else | |
3e9367e7 | 1191 | err = relocate_fd (err, 3); |
f29f9e4a | 1192 | } |
426b37ae | 1193 | |
c17c4250 | 1194 | #ifndef MSDOS |
68c45bf0 PE |
1195 | emacs_close (0); |
1196 | emacs_close (1); | |
1197 | emacs_close (2); | |
80856e74 JB |
1198 | |
1199 | dup2 (in, 0); | |
1200 | dup2 (out, 1); | |
1201 | dup2 (err, 2); | |
68c45bf0 PE |
1202 | emacs_close (in); |
1203 | emacs_close (out); | |
1204 | emacs_close (err); | |
c17c4250 | 1205 | #endif /* not MSDOS */ |
bad95d8f | 1206 | #endif /* not WINDOWSNT */ |
80856e74 | 1207 | |
6b2cd868 | 1208 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1209 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1210 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1211 | #endif |
e576cab4 JB |
1212 | #else |
1213 | setpgrp (pid, pid); | |
1214 | #endif /* USG */ | |
a129418f RS |
1215 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1216 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 | 1217 | |
c17c4250 EZ |
1218 | #ifdef MSDOS |
1219 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
a3f0666f | 1220 | xfree (pwd_var); |
c17c4250 EZ |
1221 | if (pid == -1) |
1222 | /* An error occurred while trying to run the subprocess. */ | |
1223 | report_file_error ("Spawning child process", Qnil); | |
1224 | return pid; | |
1225 | #else /* not MSDOS */ | |
bad95d8f RS |
1226 | #ifdef WINDOWSNT |
1227 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1228 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1229 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1230 | if (cpid == -1) |
1231 | /* An error occurred while trying to spawn the process. */ | |
1232 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1233 | return cpid; |
1234 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1235 | /* execvp does not accept an environment arg so the only way |
1236 | to pass this environment is to set environ. Our caller | |
1237 | is responsible for restoring the ambient value of environ. */ | |
1238 | environ = env; | |
1239 | execvp (new_argv[0], new_argv); | |
1240 | ||
68c45bf0 PE |
1241 | emacs_write (1, "Can't exec program: ", 20); |
1242 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1243 | emacs_write (1, "\n", 1); | |
80856e74 | 1244 | _exit (1); |
bad95d8f | 1245 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1246 | #endif /* not MSDOS */ |
80856e74 JB |
1247 | } |
1248 | ||
a3833dfe | 1249 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1250 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1251 | static int |
a3833dfe KH |
1252 | relocate_fd (fd, minfd) |
1253 | int fd, minfd; | |
426b37ae | 1254 | { |
a3833dfe | 1255 | if (fd >= minfd) |
426b37ae JB |
1256 | return fd; |
1257 | else | |
1258 | { | |
1259 | int new = dup (fd); | |
1260 | if (new == -1) | |
1261 | { | |
20c018a0 | 1262 | char *message1 = "Error while setting up child: "; |
826c56ac | 1263 | char *errmessage = strerror (errno); |
20c018a0 | 1264 | char *message2 = "\n"; |
68c45bf0 PE |
1265 | emacs_write (2, message1, strlen (message1)); |
1266 | emacs_write (2, errmessage, strlen (errmessage)); | |
1267 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1268 | _exit (1); |
1269 | } | |
1270 | /* Note that we hold the original FD open while we recurse, | |
1271 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1272 | new = relocate_fd (new, minfd); |
68c45bf0 | 1273 | emacs_close (fd); |
426b37ae JB |
1274 | return new; |
1275 | } | |
1276 | } | |
1277 | ||
012c6fcb JA |
1278 | static int |
1279 | getenv_internal (var, varlen, value, valuelen) | |
1280 | char *var; | |
1281 | int varlen; | |
1282 | char **value; | |
1283 | int *valuelen; | |
1284 | { | |
1285 | Lisp_Object scan; | |
1286 | ||
70949dac | 1287 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1288 | { |
c1350752 KH |
1289 | Lisp_Object entry; |
1290 | ||
70949dac | 1291 | entry = XCAR (scan); |
d50d3dc8 | 1292 | if (STRINGP (entry) |
fc932ac6 | 1293 | && STRING_BYTES (XSTRING (entry)) > varlen |
012c6fcb | 1294 | && XSTRING (entry)->data[varlen] == '=' |
bad95d8f RS |
1295 | #ifdef WINDOWSNT |
1296 | /* NT environment variables are case insensitive. */ | |
a9971c6d | 1297 | && ! strnicmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1298 | #else /* not WINDOWSNT */ |
a9971c6d | 1299 | && ! bcmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1300 | #endif /* not WINDOWSNT */ |
a9971c6d | 1301 | ) |
012c6fcb JA |
1302 | { |
1303 | *value = (char *) XSTRING (entry)->data + (varlen + 1); | |
fc932ac6 | 1304 | *valuelen = STRING_BYTES (XSTRING (entry)) - (varlen + 1); |
012c6fcb JA |
1305 | return 1; |
1306 | } | |
1307 | } | |
1308 | ||
1309 | return 0; | |
1310 | } | |
1311 | ||
83fa009c | 1312 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0, |
fdb82f93 PJ |
1313 | doc: /* Return the value of environment variable VAR, as a string. |
1314 | VAR should be a string. Value is nil if VAR is undefined in the environment. | |
1315 | This function consults the variable ``process-environment'' for its value. */) | |
1316 | (var) | |
012c6fcb JA |
1317 | Lisp_Object var; |
1318 | { | |
1319 | char *value; | |
1320 | int valuelen; | |
1321 | ||
b7826503 | 1322 | CHECK_STRING (var); |
fc932ac6 | 1323 | if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)), |
012c6fcb JA |
1324 | &value, &valuelen)) |
1325 | return make_string (value, valuelen); | |
1326 | else | |
1327 | return Qnil; | |
1328 | } | |
1329 | ||
1330 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1331 | callable from C. */ |
012c6fcb JA |
1332 | char * |
1333 | egetenv (var) | |
e576cab4 | 1334 | char *var; |
012c6fcb JA |
1335 | { |
1336 | char *value; | |
1337 | int valuelen; | |
1338 | ||
1339 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1340 | return value; | |
1341 | else | |
1342 | return 0; | |
1343 | } | |
1344 | ||
80856e74 JB |
1345 | #endif /* not VMS */ |
1346 | \f | |
8de15d69 | 1347 | /* This is run before init_cmdargs. */ |
7e6c2178 | 1348 | |
dfcf069d | 1349 | void |
8de15d69 RS |
1350 | init_callproc_1 () |
1351 | { | |
1352 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1353 | char *doc_dir = egetenv ("EMACSDOC"); |
1354 | ||
8de15d69 | 1355 | Vdata_directory |
7e6c2178 | 1356 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1357 | : PATH_DATA)); |
35a2f4b8 KH |
1358 | Vdoc_directory |
1359 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1360 | : PATH_DOC)); | |
9453ea7b | 1361 | |
e576cab4 | 1362 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1363 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1364 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1365 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1366 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1367 | } |
1368 | ||
e17f7533 | 1369 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1370 | |
dfcf069d | 1371 | void |
8de15d69 RS |
1372 | init_callproc () |
1373 | { | |
1374 | char *data_dir = egetenv ("EMACSDATA"); | |
1375 | ||
1376 | register char * sh; | |
1377 | Lisp_Object tempdir; | |
1378 | ||
9cc4fad5 | 1379 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1380 | { |
05630743 RS |
1381 | /* Add to the path the lib-src subdir of the installation dir. */ |
1382 | Lisp_Object tem; | |
1383 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1384 | Vinstallation_directory); | |
bad95d8f | 1385 | #ifndef DOS_NT |
1a6640ec | 1386 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc | 1387 | if (NILP (Fmember (tem, Vexec_path))) |
70ec1377 RS |
1388 | { |
1389 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); | |
1390 | Vexec_path = Fcons (tem, Vexec_path); | |
1391 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
1392 | } | |
0fa248bc RS |
1393 | |
1394 | Vexec_directory = Ffile_name_as_directory (tem); | |
bad95d8f | 1395 | #endif /* not DOS_NT */ |
8de15d69 | 1396 | |
e17f7533 RS |
1397 | /* Maybe use ../etc as well as ../lib-src. */ |
1398 | if (data_dir == 0) | |
1399 | { | |
1400 | tem = Fexpand_file_name (build_string ("etc"), | |
1401 | Vinstallation_directory); | |
1402 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1403 | } |
1404 | } | |
7e933683 RS |
1405 | |
1406 | /* Look for the files that should be in etc. We don't use | |
1407 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1408 | near the executable, and they are never in the build |
7e933683 RS |
1409 | directory when that's different from the source directory. |
1410 | ||
1411 | Instead, if these files are not in the nominal place, we try the | |
1412 | source directory. */ | |
1413 | if (data_dir == 0) | |
1414 | { | |
70ec1377 | 1415 | Lisp_Object tem, tem1, srcdir; |
7e933683 | 1416 | |
70ec1377 RS |
1417 | srcdir = Fexpand_file_name (build_string ("../src/"), |
1418 | build_string (PATH_DUMPLOADSEARCH)); | |
7e933683 RS |
1419 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); |
1420 | tem1 = Ffile_exists_p (tem); | |
70ec1377 | 1421 | if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1)) |
7e933683 | 1422 | { |
70ec1377 | 1423 | Lisp_Object newdir; |
7e933683 RS |
1424 | newdir = Fexpand_file_name (build_string ("../etc/"), |
1425 | build_string (PATH_DUMPLOADSEARCH)); | |
1426 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1427 | tem1 = Ffile_exists_p (tem); | |
1428 | if (!NILP (tem1)) | |
1429 | Vdata_directory = newdir; | |
1430 | } | |
1431 | } | |
80856e74 | 1432 | |
d883eb62 RS |
1433 | #ifndef CANNOT_DUMP |
1434 | if (initialized) | |
1435 | #endif | |
1436 | { | |
1437 | tempdir = Fdirectory_file_name (Vexec_directory); | |
1438 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
1439 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", | |
1440 | Vexec_directory); | |
1441 | } | |
80856e74 | 1442 | |
e576cab4 JB |
1443 | tempdir = Fdirectory_file_name (Vdata_directory); |
1444 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
76d5c6cf RS |
1445 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1446 | Vdata_directory); | |
e576cab4 | 1447 | |
80856e74 JB |
1448 | #ifdef VMS |
1449 | Vshell_file_name = build_string ("*dcl*"); | |
1450 | #else | |
e576cab4 | 1451 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1452 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1453 | #endif | |
8abd035b RS |
1454 | |
1455 | #ifdef VMS | |
1456 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1457 | #else | |
1458 | if (getenv ("TMPDIR")) | |
1459 | { | |
1460 | char *dir = getenv ("TMPDIR"); | |
1461 | Vtemp_file_name_pattern | |
1462 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1463 | build_string (dir)); | |
1464 | } | |
1465 | else | |
1466 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1467 | #endif | |
9fefd2ba JB |
1468 | } |
1469 | ||
dfcf069d | 1470 | void |
9fefd2ba JB |
1471 | set_process_environment () |
1472 | { | |
1473 | register char **envp; | |
80856e74 | 1474 | |
80856e74 JB |
1475 | Vprocess_environment = Qnil; |
1476 | #ifndef CANNOT_DUMP | |
1477 | if (initialized) | |
1478 | #endif | |
1479 | for (envp = environ; *envp; envp++) | |
1480 | Vprocess_environment = Fcons (build_string (*envp), | |
1481 | Vprocess_environment); | |
80856e74 JB |
1482 | } |
1483 | ||
dfcf069d | 1484 | void |
80856e74 JB |
1485 | syms_of_callproc () |
1486 | { | |
bad95d8f | 1487 | #ifdef DOS_NT |
093650fe RS |
1488 | Qbuffer_file_type = intern ("buffer-file-type"); |
1489 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1490 | #endif /* DOS_NT */ |
7e6c2178 | 1491 | |
80856e74 | 1492 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
fdb82f93 PJ |
1493 | doc: /* *File name to load inferior shells from. |
1494 | Initialized from the SHELL environment variable. */); | |
80856e74 JB |
1495 | |
1496 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
fdb82f93 PJ |
1497 | doc: /* *List of directories to search programs to run in subprocesses. |
1498 | Each element is a string (directory name) or nil (try default directory). */); | |
80856e74 | 1499 | |
b81a1b72 | 1500 | DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, |
fdb82f93 PJ |
1501 | doc: /* *List of suffixes to try to find executable file names. |
1502 | Each element is a string. */); | |
33d5af99 | 1503 | Vexec_suffixes = Qnil; |
b81a1b72 | 1504 | |
80856e74 | 1505 | DEFVAR_LISP ("exec-directory", &Vexec_directory, |
fdb82f93 PJ |
1506 | doc: /* Directory for executables for Emacs to invoke. |
1507 | More generally, this includes any architecture-dependent files | |
1508 | that are built and installed from the Emacs distribution. */); | |
e576cab4 JB |
1509 | |
1510 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
fdb82f93 PJ |
1511 | doc: /* Directory of machine-independent files that come with GNU Emacs. |
1512 | These are files intended for Emacs to use while it runs. */); | |
80856e74 | 1513 | |
35a2f4b8 | 1514 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
fdb82f93 PJ |
1515 | doc: /* Directory containing the DOC file that comes with GNU Emacs. |
1516 | This is usually the same as data-directory. */); | |
35a2f4b8 | 1517 | |
ed61592a | 1518 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
fdb82f93 PJ |
1519 | doc: /* For internal use by the build procedure only. |
1520 | This is the name of the directory in which the build procedure installed | |
1521 | Emacs's info files; the default value for Info-default-directory-list | |
1522 | includes this. */); | |
ed61592a JB |
1523 | Vconfigure_info_directory = build_string (PATH_INFO); |
1524 | ||
8abd035b | 1525 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
fdb82f93 PJ |
1526 | doc: /* Pattern for making names for temporary files. |
1527 | This is used by `call-process-region'. */); | |
0537ec48 | 1528 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1529 | |
80856e74 | 1530 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
fdb82f93 PJ |
1531 | doc: /* List of environment variables for subprocesses to inherit. |
1532 | Each element should be a string of the form ENVVARNAME=VALUE. | |
1533 | If multiple entries define the same variable, the first one always | |
1534 | takes precedence. | |
1535 | The environment which Emacs inherits is placed in this variable | |
1536 | when Emacs starts. */); | |
80856e74 JB |
1537 | |
1538 | #ifndef VMS | |
1539 | defsubr (&Scall_process); | |
83fa009c | 1540 | defsubr (&Sgetenv_internal); |
986ffb24 | 1541 | #endif |
e576cab4 | 1542 | defsubr (&Scall_process_region); |
80856e74 | 1543 | } |