Commit | Line | Data |
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80856e74 | 1 | /* Synchronous subprocess invocation for GNU Emacs. |
68c45bf0 | 2 | Copyright (C) 1985, 86,87,88,93,94,95, 1999 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 | ||
68c45bf0 | 22 | #include <config.h> |
80856e74 | 23 | #include <signal.h> |
e576cab4 | 24 | #include <errno.h> |
565620a5 | 25 | #include <stdio.h> |
80856e74 | 26 | |
426b37ae | 27 | extern int errno; |
426b37ae | 28 | |
80856e74 JB |
29 | /* Define SIGCHLD as an alias for SIGCLD. */ |
30 | ||
31 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
32 | #define SIGCHLD SIGCLD | |
33 | #endif /* SIGCLD */ | |
34 | ||
35 | #include <sys/types.h> | |
88a64fef | 36 | |
3cbd6585 GM |
37 | #ifdef HAVE_UNISTD_H |
38 | #include <unistd.h> | |
39 | #endif | |
40 | ||
80856e74 JB |
41 | #include <sys/file.h> |
42 | #ifdef USG5 | |
472e83fe | 43 | #define INCLUDED_FCNTL |
80856e74 JB |
44 | #include <fcntl.h> |
45 | #endif | |
46 | ||
bad95d8f RS |
47 | #ifdef WINDOWSNT |
48 | #define NOMINMAX | |
49 | #include <windows.h> | |
50 | #include <stdlib.h> /* for proper declaration of environ */ | |
51 | #include <fcntl.h> | |
489f9371 | 52 | #include "w32.h" |
bad95d8f RS |
53 | #define _P_NOWAIT 1 /* from process.h */ |
54 | #endif | |
55 | ||
7e6c2178 | 56 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
472e83fe | 57 | #define INCLUDED_FCNTL |
7e6c2178 RS |
58 | #include <fcntl.h> |
59 | #include <sys/stat.h> | |
60 | #include <sys/param.h> | |
61 | #include <errno.h> | |
62 | #endif /* MSDOS */ | |
63 | ||
80856e74 JB |
64 | #ifndef O_RDONLY |
65 | #define O_RDONLY 0 | |
66 | #endif | |
67 | ||
68 | #ifndef O_WRONLY | |
69 | #define O_WRONLY 1 | |
70 | #endif | |
71 | ||
72 | #include "lisp.h" | |
73 | #include "commands.h" | |
74 | #include "buffer.h" | |
32d08644 | 75 | #include "charset.h" |
edf496dd | 76 | #include "ccl.h" |
32d08644 | 77 | #include "coding.h" |
f0b950cf | 78 | #include "composite.h" |
57bda87a | 79 | #include <epaths.h> |
80856e74 | 80 | #include "process.h" |
d177f194 | 81 | #include "syssignal.h" |
a129418f | 82 | #include "systty.h" |
80856e74 | 83 | |
5f027cea EZ |
84 | #ifdef MSDOS |
85 | #include "msdos.h" | |
86 | #endif | |
87 | ||
80856e74 JB |
88 | #ifdef VMS |
89 | extern noshare char **environ; | |
90 | #else | |
91 | extern char **environ; | |
92 | #endif | |
93 | ||
f95c3f91 | 94 | #ifdef HAVE_SETPGID |
2b7e8799 | 95 | #if !defined (USG) || defined (BSD_PGRPS) |
320695d8 | 96 | #undef setpgrp |
f95c3f91 GM |
97 | #define setpgrp setpgid |
98 | #endif | |
2b7e8799 | 99 | #endif |
f95c3f91 | 100 | |
80856e74 JB |
101 | #define max(a, b) ((a) > (b) ? (a) : (b)) |
102 | ||
35a2f4b8 | 103 | Lisp_Object Vexec_path, Vexec_directory, Vdata_directory, Vdoc_directory; |
ed61592a | 104 | Lisp_Object Vconfigure_info_directory; |
8abd035b | 105 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
106 | |
107 | Lisp_Object Vshell_file_name; | |
108 | ||
80856e74 | 109 | Lisp_Object Vprocess_environment; |
80856e74 | 110 | |
bad95d8f | 111 | #ifdef DOS_NT |
093650fe | 112 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 113 | #endif /* DOS_NT */ |
093650fe | 114 | |
80856e74 JB |
115 | /* True iff we are about to fork off a synchronous process or if we |
116 | are waiting for it. */ | |
117 | int synch_process_alive; | |
118 | ||
119 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
120 | char *synch_process_death; | |
121 | ||
122 | /* If synch_process_death is zero, | |
123 | this is exit code of synchronous subprocess. */ | |
124 | int synch_process_retcode; | |
8de15d69 RS |
125 | |
126 | extern Lisp_Object Vdoc_file_name; | |
89e1ec1d | 127 | |
8d024345 | 128 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
80856e74 | 129 | \f |
37d54121 RS |
130 | /* Clean up when exiting Fcall_process. |
131 | On MSDOS, delete the temporary file on any kind of termination. | |
132 | On Unix, kill the process and any children on termination by signal. */ | |
133 | ||
134 | /* Nonzero if this is termination due to exit. */ | |
135 | static int call_process_exited; | |
136 | ||
80856e74 JB |
137 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
138 | ||
d177f194 JB |
139 | static Lisp_Object |
140 | call_process_kill (fdpid) | |
141 | Lisp_Object fdpid; | |
142 | { | |
68c45bf0 | 143 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
144 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
145 | synch_process_alive = 0; | |
146 | return Qnil; | |
147 | } | |
148 | ||
80856e74 JB |
149 | Lisp_Object |
150 | call_process_cleanup (fdpid) | |
151 | Lisp_Object fdpid; | |
152 | { | |
052062e0 | 153 | #if defined (MSDOS) || defined (macintosh) |
7e6c2178 | 154 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
155 | register Lisp_Object file; |
156 | file = Fcdr (fdpid); | |
68c45bf0 | 157 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 RS |
158 | if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) |
159 | unlink (XSTRING (file)->data); | |
052062e0 | 160 | #else /* not MSDOS and not macintosh */ |
d177f194 JB |
161 | register int pid = XFASTINT (Fcdr (fdpid)); |
162 | ||
37d54121 | 163 | if (call_process_exited) |
6b6e798b | 164 | { |
68c45bf0 | 165 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
166 | return Qnil; |
167 | } | |
37d54121 | 168 | |
d177f194 JB |
169 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
170 | { | |
171 | int count = specpdl_ptr - specpdl; | |
172 | record_unwind_protect (call_process_kill, fdpid); | |
173 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
174 | immediate_quit = 1; | |
175 | QUIT; | |
176 | wait_for_termination (pid); | |
177 | immediate_quit = 0; | |
178 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
179 | message1 ("Waiting for process to die...done"); | |
180 | } | |
80856e74 | 181 | synch_process_alive = 0; |
68c45bf0 | 182 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 183 | #endif /* not MSDOS */ |
80856e74 JB |
184 | return Qnil; |
185 | } | |
186 | ||
187 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
188 | "Call PROGRAM synchronously in separate process.\n\ | |
edf496dd | 189 | The remaining arguments are optional.\n\ |
80856e74 JB |
190 | The program's input comes from file INFILE (nil means `/dev/null').\n\ |
191 | Insert output in BUFFER before point; t means current buffer;\n\ | |
192 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
193 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
194 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
195 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
196 | STDERR-FILE may be nil (discard standard error output),\n\ | |
197 | t (mix it with ordinary output), or a file name string.\n\ | |
198 | \n\ | |
80856e74 JB |
199 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
200 | Remaining arguments are strings passed as command arguments to PROGRAM.\n\ | |
39eaa782 RS |
201 | \n\ |
202 | If BUFFER is 0, `call-process' returns immediately with value nil.\n\ | |
203 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 204 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 205 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
206 | (nargs, args) |
207 | int nargs; | |
208 | register Lisp_Object *args; | |
209 | { | |
58616e67 | 210 | Lisp_Object infile, buffer, current_dir, display, path; |
80856e74 JB |
211 | int fd[2]; |
212 | int filefd; | |
213 | register int pid; | |
6e3bfbb2 RS |
214 | char buf[16384]; |
215 | char *bufptr = buf; | |
216 | int bufsize = 16384; | |
80856e74 | 217 | int count = specpdl_ptr - specpdl; |
2d607244 | 218 | |
80856e74 JB |
219 | register unsigned char **new_argv |
220 | = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
221 | struct buffer *old = current_buffer; | |
39eaa782 RS |
222 | /* File to use for stderr in the child. |
223 | t means use same as standard output. */ | |
224 | Lisp_Object error_file; | |
7e6c2178 RS |
225 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
226 | char *outf, *tempfile; | |
227 | int outfilefd; | |
228 | #endif | |
052062e0 RS |
229 | #ifdef macintosh |
230 | char *tempfile; | |
231 | int outfilefd; | |
232 | #endif | |
80856e74 JB |
233 | #if 0 |
234 | int mask; | |
235 | #endif | |
32d08644 KH |
236 | struct coding_system process_coding; /* coding-system of process output */ |
237 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
238 | /* Set to the return value of Ffind_operation_coding_system. */ |
239 | Lisp_Object coding_systems; | |
240 | ||
241 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
242 | coding_systems = Qt; | |
32d08644 | 243 | |
80856e74 JB |
244 | CHECK_STRING (args[0], 0); |
245 | ||
39eaa782 RS |
246 | error_file = Qt; |
247 | ||
7e6c2178 RS |
248 | #ifndef subprocesses |
249 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
3ffde7d6 | 250 | if (nargs >= 3 |
09ffb8b5 | 251 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
252 | error ("Operating system cannot handle asynchronous subprocesses"); |
253 | #endif /* subprocesses */ | |
254 | ||
09494912 | 255 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
256 | { |
257 | Lisp_Object val, *args2; | |
32d08644 KH |
258 | int i; |
259 | ||
260 | /* If arguments are supplied, we may have to encode them. */ | |
261 | if (nargs >= 5) | |
262 | { | |
30d57b8e RS |
263 | int must_encode = 0; |
264 | ||
e7c1c20e RS |
265 | for (i = 4; i < nargs; i++) |
266 | CHECK_STRING (args[i], i); | |
267 | ||
a2286b5c | 268 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
269 | if (STRING_MULTIBYTE (args[i])) |
270 | must_encode = 1; | |
271 | ||
beacaab3 KH |
272 | if (!NILP (Vcoding_system_for_write)) |
273 | val = Vcoding_system_for_write; | |
30d57b8e | 274 | else if (! must_encode) |
beacaab3 KH |
275 | val = Qnil; |
276 | else | |
32d08644 KH |
277 | { |
278 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
279 | args2[0] = Qcall_process; | |
280 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 281 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 282 | if (CONSP (coding_systems)) |
70949dac | 283 | val = XCDR (coding_systems); |
776b95cb | 284 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 285 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
286 | else |
287 | val = Qnil; | |
32d08644 KH |
288 | } |
289 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); | |
290 | } | |
32d08644 KH |
291 | } |
292 | ||
e576cab4 JB |
293 | if (nargs >= 2 && ! NILP (args[1])) |
294 | { | |
295 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
296 | CHECK_STRING (infile, 1); | |
297 | } | |
80856e74 | 298 | else |
5437e9f9 | 299 | infile = build_string (NULL_DEVICE); |
80856e74 | 300 | |
e576cab4 JB |
301 | if (nargs >= 3) |
302 | { | |
39eaa782 RS |
303 | buffer = args[2]; |
304 | ||
305 | /* If BUFFER is a list, its meaning is | |
306 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
307 | if (CONSP (buffer)) | |
308 | { | |
70949dac | 309 | if (CONSP (XCDR (buffer))) |
45be8a1e | 310 | { |
a9d4f28a | 311 | Lisp_Object stderr_file; |
70949dac | 312 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
313 | |
314 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
315 | error_file = stderr_file; | |
316 | else | |
317 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
318 | } | |
319 | ||
70949dac | 320 | buffer = XCAR (buffer); |
39eaa782 | 321 | } |
044512ed | 322 | |
39eaa782 RS |
323 | if (!(EQ (buffer, Qnil) |
324 | || EQ (buffer, Qt) | |
3ffde7d6 | 325 | || INTEGERP (buffer))) |
e576cab4 | 326 | { |
39eaa782 RS |
327 | Lisp_Object spec_buffer; |
328 | spec_buffer = buffer; | |
50fe359b | 329 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
330 | /* Mention the buffer name for a better error message. */ |
331 | if (NILP (buffer)) | |
332 | CHECK_BUFFER (spec_buffer, 2); | |
e576cab4 JB |
333 | CHECK_BUFFER (buffer, 2); |
334 | } | |
335 | } | |
336 | else | |
337 | buffer = Qnil; | |
80856e74 | 338 | |
58616e67 JB |
339 | /* Make sure that the child will be able to chdir to the current |
340 | buffer's current directory, or its unhandled equivalent. We | |
341 | can't just have the child check for an error when it does the | |
342 | chdir, since it's in a vfork. | |
343 | ||
344 | We have to GCPRO around this because Fexpand_file_name, | |
345 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
346 | might call a file name handling function. The argument list is | |
347 | protected by the caller, so all we really have to worry about is | |
348 | buffer. */ | |
349 | { | |
350 | struct gcpro gcpro1, gcpro2, gcpro3; | |
351 | ||
352 | current_dir = current_buffer->directory; | |
353 | ||
354 | GCPRO3 (infile, buffer, current_dir); | |
355 | ||
c52b0b34 KH |
356 | current_dir |
357 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
358 | Qnil); | |
58616e67 JB |
359 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
360 | report_file_error ("Setting current directory", | |
361 | Fcons (current_buffer->directory, Qnil)); | |
362 | ||
363 | UNGCPRO; | |
364 | } | |
365 | ||
e576cab4 | 366 | display = nargs >= 4 ? args[3] : Qnil; |
80856e74 | 367 | |
68c45bf0 | 368 | filefd = emacs_open (XSTRING (infile)->data, O_RDONLY, 0); |
80856e74 JB |
369 | if (filefd < 0) |
370 | { | |
e576cab4 | 371 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
372 | } |
373 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
374 | { |
375 | struct gcpro gcpro1; | |
376 | ||
377 | GCPRO1 (current_dir); | |
378 | openp (Vexec_path, args[0], EXEC_SUFFIXES, &path, 1); | |
379 | UNGCPRO; | |
380 | } | |
012c6fcb | 381 | if (NILP (path)) |
80856e74 | 382 | { |
68c45bf0 | 383 | emacs_close (filefd); |
80856e74 JB |
384 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
385 | } | |
386 | new_argv[0] = XSTRING (path)->data; | |
c364e618 KH |
387 | if (nargs > 4) |
388 | { | |
389 | register int i; | |
c5bfa12b | 390 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 391 | |
c5bfa12b KH |
392 | GCPRO3 (infile, buffer, current_dir); |
393 | argument_coding.dst_multibyte = 0; | |
394 | for (i = 4; i < nargs; i++) | |
c364e618 | 395 | { |
c5bfa12b KH |
396 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
397 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
c364e618 | 398 | { |
c5bfa12b KH |
399 | /* We must encode this argument. */ |
400 | args[i] = encode_coding_string (args[i], &argument_coding, 1); | |
401 | if (argument_coding.type == coding_type_ccl) | |
402 | setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil); | |
c364e618 | 403 | } |
c5bfa12b | 404 | new_argv[i - 3] = XSTRING (args[i])->data; |
c364e618 | 405 | } |
c5bfa12b | 406 | UNGCPRO; |
db54baaa | 407 | new_argv[nargs - 3] = 0; |
c364e618 | 408 | } |
db54baaa KH |
409 | else |
410 | new_argv[1] = 0; | |
80856e74 | 411 | |
7e6c2178 | 412 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 413 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
414 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
415 | else | |
416 | { | |
417 | tempfile = alloca (20); | |
418 | *tempfile = '\0'; | |
419 | } | |
420 | dostounix_filename (tempfile); | |
421 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') | |
422 | strcat (tempfile, "/"); | |
423 | strcat (tempfile, "detmp.XXX"); | |
424 | mktemp (tempfile); | |
425 | ||
426 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
427 | if (outfilefd < 0) | |
428 | { | |
68c45bf0 | 429 | emacs_close (filefd); |
6f89d28a MB |
430 | report_file_error ("Opening process output file", |
431 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 432 | } |
6f89d28a | 433 | fd[0] = filefd; |
2610078a | 434 | fd[1] = outfilefd; |
6f89d28a | 435 | #endif /* MSDOS */ |
7e6c2178 | 436 | |
052062e0 RS |
437 | #ifdef macintosh |
438 | /* Since we don't have pipes on the Mac, create a temporary file to | |
439 | hold the output of the subprocess. */ | |
440 | tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
441 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, | |
442 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
443 | ||
444 | mktemp (tempfile); | |
445 | ||
446 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
447 | if (outfilefd < 0) | |
448 | { | |
449 | close (filefd); | |
450 | report_file_error ("Opening process output file", | |
451 | Fcons (build_string (tempfile), Qnil)); | |
452 | } | |
453 | fd[0] = filefd; | |
454 | fd[1] = outfilefd; | |
455 | #endif /* macintosh */ | |
456 | ||
d50d3dc8 | 457 | if (INTEGERP (buffer)) |
68c45bf0 | 458 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
459 | else |
460 | { | |
7e6c2178 | 461 | #ifndef MSDOS |
052062e0 | 462 | #ifndef macintosh |
80856e74 | 463 | pipe (fd); |
7e6c2178 | 464 | #endif |
052062e0 | 465 | #endif |
80856e74 JB |
466 | #if 0 |
467 | /* Replaced by close_process_descs */ | |
468 | set_exclusive_use (fd[0]); | |
469 | #endif | |
470 | } | |
471 | ||
472 | { | |
473 | /* child_setup must clobber environ in systems with true vfork. | |
474 | Protect it from permanent change. */ | |
475 | register char **save_environ = environ; | |
476 | register int fd1 = fd[1]; | |
39eaa782 | 477 | int fd_error = fd1; |
80856e74 JB |
478 | |
479 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 480 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
481 | #endif |
482 | ||
483 | /* Record that we're about to create a synchronous process. */ | |
484 | synch_process_alive = 1; | |
485 | ||
5c03767e RS |
486 | /* These vars record information from process termination. |
487 | Clear them now before process can possibly terminate, | |
488 | to avoid timing error if process terminates soon. */ | |
489 | synch_process_death = 0; | |
490 | synch_process_retcode = 0; | |
491 | ||
39eaa782 | 492 | if (NILP (error_file)) |
68c45bf0 | 493 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
494 | else if (STRINGP (error_file)) |
495 | { | |
496 | #ifdef DOS_NT | |
68c45bf0 PE |
497 | fd_error = emacs_open (XSTRING (error_file)->data, |
498 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
499 | S_IREAD | S_IWRITE); | |
39eaa782 RS |
500 | #else /* not DOS_NT */ |
501 | fd_error = creat (XSTRING (error_file)->data, 0666); | |
502 | #endif /* not DOS_NT */ | |
503 | } | |
504 | ||
505 | if (fd_error < 0) | |
506 | { | |
68c45bf0 | 507 | emacs_close (filefd); |
6f89d28a | 508 | if (fd[0] != filefd) |
68c45bf0 | 509 | emacs_close (fd[0]); |
39eaa782 | 510 | if (fd1 >= 0) |
68c45bf0 | 511 | emacs_close (fd1); |
6f89d28a MB |
512 | #ifdef MSDOS |
513 | unlink (tempfile); | |
514 | #endif | |
515 | report_file_error ("Cannot redirect stderr", | |
516 | Fcons ((NILP (error_file) | |
517 | ? build_string (NULL_DEVICE) : error_file), | |
518 | Qnil)); | |
39eaa782 | 519 | } |
89e1ec1d | 520 | |
8d024345 | 521 | current_dir = ENCODE_FILE (current_dir); |
89e1ec1d | 522 | |
052062e0 RS |
523 | #ifdef macintosh |
524 | { | |
525 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
526 | a child_setup as for MSDOS and other platforms. Note that this | |
527 | code does not handle passing the environment to the synchronous | |
528 | Mac subprocess. */ | |
529 | char *infn, *outfn, *errfn, *currdn; | |
530 | ||
531 | /* close these files so subprocess can write to them */ | |
532 | close (outfilefd); | |
533 | if (fd_error != outfilefd) | |
534 | close (fd_error); | |
535 | fd1 = -1; /* No harm in closing that one! */ | |
536 | ||
537 | infn = XSTRING (infile)->data; | |
538 | outfn = tempfile; | |
539 | if (NILP (error_file)) | |
540 | errfn = NULL_DEVICE; | |
541 | else if (EQ (Qt, error_file)) | |
542 | errfn = outfn; | |
543 | else | |
544 | errfn = XSTRING (error_file)->data; | |
545 | currdn = XSTRING (current_dir)->data; | |
546 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); | |
547 | ||
548 | /* Record that the synchronous process exited and note its | |
549 | termination status. */ | |
550 | synch_process_alive = 0; | |
551 | synch_process_retcode = pid; | |
552 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 553 | { |
ca9c0567 | 554 | synchronize_system_messages_locale (); |
68c45bf0 PE |
555 | synch_process_death = strerror (errno); |
556 | } | |
052062e0 RS |
557 | |
558 | /* Since CRLF is converted to LF within `decode_coding', we can | |
559 | always open a file with binary mode. */ | |
560 | fd[0] = open (tempfile, O_BINARY); | |
561 | if (fd[0] < 0) | |
562 | { | |
563 | unlink (tempfile); | |
564 | close (filefd); | |
565 | report_file_error ("Cannot re-open temporary file", Qnil); | |
566 | } | |
567 | } | |
568 | #else /* not macintosh */ | |
2610078a | 569 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 570 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
571 | exit status, not its PID, so we assign it to `synch_process_retcode' |
572 | below. */ | |
c17c4250 EZ |
573 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
574 | 0, current_dir); | |
39eaa782 | 575 | |
2610078a KH |
576 | /* Record that the synchronous process exited and note its |
577 | termination status. */ | |
578 | synch_process_alive = 0; | |
579 | synch_process_retcode = pid; | |
580 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 581 | { |
ca9c0567 | 582 | synchronize_system_messages_locale (); |
68c45bf0 PE |
583 | synch_process_death = strerror (errno); |
584 | } | |
2610078a | 585 | |
68c45bf0 | 586 | emacs_close (outfilefd); |
2610078a | 587 | if (fd_error != outfilefd) |
68c45bf0 | 588 | emacs_close (fd_error); |
2610078a | 589 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
590 | /* Since CRLF is converted to LF within `decode_coding', we can |
591 | always open a file with binary mode. */ | |
68c45bf0 | 592 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
593 | if (fd[0] < 0) |
594 | { | |
595 | unlink (tempfile); | |
68c45bf0 | 596 | emacs_close (filefd); |
2610078a KH |
597 | report_file_error ("Cannot re-open temporary file", Qnil); |
598 | } | |
599 | #else /* not MSDOS */ | |
bad95d8f | 600 | #ifdef WINDOWSNT |
2d607244 RS |
601 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
602 | 0, current_dir); | |
bad95d8f | 603 | #else /* not WINDOWSNT */ |
80856e74 JB |
604 | pid = vfork (); |
605 | ||
606 | if (pid == 0) | |
607 | { | |
608 | if (fd[0] >= 0) | |
68c45bf0 | 609 | emacs_close (fd[0]); |
1e7963c7 RS |
610 | #ifdef HAVE_SETSID |
611 | setsid (); | |
612 | #endif | |
613 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
614 | setpgrp (); |
615 | #else | |
616 | setpgrp (pid, pid); | |
617 | #endif /* USG */ | |
2d607244 RS |
618 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
619 | 0, current_dir); | |
80856e74 | 620 | } |
bad95d8f | 621 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
622 | |
623 | /* The MSDOS case did this already. */ | |
624 | if (fd_error >= 0) | |
68c45bf0 | 625 | emacs_close (fd_error); |
2610078a | 626 | #endif /* not MSDOS */ |
052062e0 | 627 | #endif /* not macintosh */ |
80856e74 | 628 | |
80856e74 JB |
629 | environ = save_environ; |
630 | ||
6b6e798b RS |
631 | /* Close most of our fd's, but not fd[0] |
632 | since we will use that to read input from. */ | |
68c45bf0 | 633 | emacs_close (filefd); |
799abb26 | 634 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 635 | emacs_close (fd1); |
80856e74 JB |
636 | } |
637 | ||
638 | if (pid < 0) | |
639 | { | |
6b6e798b | 640 | if (fd[0] >= 0) |
68c45bf0 | 641 | emacs_close (fd[0]); |
80856e74 JB |
642 | report_file_error ("Doing vfork", Qnil); |
643 | } | |
644 | ||
d50d3dc8 | 645 | if (INTEGERP (buffer)) |
80856e74 | 646 | { |
6b6e798b | 647 | if (fd[0] >= 0) |
68c45bf0 | 648 | emacs_close (fd[0]); |
80856e74 | 649 | #ifndef subprocesses |
e576cab4 JB |
650 | /* If Emacs has been built with asynchronous subprocess support, |
651 | we don't need to do this, I think because it will then have | |
652 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
653 | wait_without_blocking (); |
654 | #endif /* subprocesses */ | |
80856e74 JB |
655 | return Qnil; |
656 | } | |
657 | ||
6b6e798b | 658 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
659 | call_process_exited = 0; |
660 | ||
052062e0 | 661 | #if defined(MSDOS) || defined(macintosh) |
7e6c2178 RS |
662 | /* MSDOS needs different cleanup information. */ |
663 | record_unwind_protect (call_process_cleanup, | |
664 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
665 | #else | |
80856e74 JB |
666 | record_unwind_protect (call_process_cleanup, |
667 | Fcons (make_number (fd[0]), make_number (pid))); | |
052062e0 | 668 | #endif /* not MSDOS and not macintosh */ |
80856e74 JB |
669 | |
670 | ||
d50d3dc8 | 671 | if (BUFFERP (buffer)) |
80856e74 JB |
672 | Fset_buffer (buffer); |
673 | ||
09494912 RS |
674 | if (NILP (buffer)) |
675 | { | |
676 | /* If BUFFER is nil, we must read process output once and then | |
677 | discard it, so setup coding system but with nil. */ | |
678 | setup_coding_system (Qnil, &process_coding); | |
679 | } | |
680 | else | |
681 | { | |
682 | Lisp_Object val, *args2; | |
683 | ||
684 | val = Qnil; | |
685 | if (!NILP (Vcoding_system_for_read)) | |
686 | val = Vcoding_system_for_read; | |
687 | else | |
688 | { | |
689 | if (EQ (coding_systems, Qt)) | |
690 | { | |
691 | int i; | |
692 | ||
693 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
694 | args2[0] = Qcall_process; | |
695 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
696 | coding_systems | |
697 | = Ffind_operation_coding_system (nargs + 1, args2); | |
698 | } | |
699 | if (CONSP (coding_systems)) | |
70949dac | 700 | val = XCAR (coding_systems); |
09494912 | 701 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 702 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
703 | else |
704 | val = Qnil; | |
705 | } | |
706 | setup_coding_system (Fcheck_coding_system (val), &process_coding); | |
707 | /* In unibyte mode, character code conversion should not take | |
708 | place but EOL conversion should. So, setup raw-text or one | |
709 | of the subsidiary according to the information just setup. */ | |
710 | if (NILP (current_buffer->enable_multibyte_characters) | |
711 | && !NILP (val)) | |
712 | setup_raw_text_coding_system (&process_coding); | |
713 | } | |
c5bfa12b KH |
714 | process_coding.src_multibyte = 0; |
715 | process_coding.dst_multibyte | |
716 | = (BUFFERP (buffer) | |
717 | ? ! NILP (XBUFFER (buffer)->enable_multibyte_characters) | |
718 | : ! NILP (current_buffer->enable_multibyte_characters)); | |
09494912 | 719 | |
80856e74 JB |
720 | immediate_quit = 1; |
721 | QUIT; | |
722 | ||
723 | { | |
724 | register int nread; | |
0ad477db | 725 | int first = 1; |
6e3bfbb2 | 726 | int total_read = 0; |
321fecde | 727 | int carryover = 0; |
7a7ab107 | 728 | int display_on_the_fly = !NILP (display) && INTERACTIVE; |
05b44e90 | 729 | struct coding_system saved_coding; |
f778b157 KH |
730 | int pt_orig = PT, pt_byte_orig = PT_BYTE; |
731 | int inserted; | |
05b44e90 KH |
732 | |
733 | saved_coding = process_coding; | |
f0b950cf KH |
734 | if (process_coding.composing != COMPOSITION_DISABLED) |
735 | coding_allocate_composition_data (&process_coding, PT); | |
60558b19 | 736 | while (1) |
80856e74 | 737 | { |
60558b19 RS |
738 | /* Repeatedly read until we've filled as much as possible |
739 | of the buffer size we have. But don't read | |
8e6208c5 | 740 | less than 1024--save that for the next bufferful. */ |
321fecde | 741 | nread = carryover; |
60558b19 | 742 | while (nread < bufsize - 1024) |
00fb3e95 | 743 | { |
68c45bf0 PE |
744 | int this_read = emacs_read (fd[0], bufptr + nread, |
745 | bufsize - nread); | |
60558b19 RS |
746 | |
747 | if (this_read < 0) | |
748 | goto give_up; | |
749 | ||
750 | if (this_read == 0) | |
7a7ab107 KH |
751 | { |
752 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
753 | break; | |
754 | } | |
60558b19 RS |
755 | |
756 | nread += this_read; | |
7a7ab107 | 757 | total_read += this_read; |
60558b19 | 758 | |
7a7ab107 KH |
759 | if (display_on_the_fly) |
760 | break; | |
761 | } | |
60558b19 RS |
762 | |
763 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 764 | immediate_quit = 0; |
6e3bfbb2 | 765 | |
012c6fcb | 766 | if (!NILP (buffer)) |
32d08644 | 767 | { |
c5bfa12b KH |
768 | if (! CODING_MAY_REQUIRE_DECODING (&process_coding)) |
769 | insert_1_both (bufptr, nread, nread, 0, 1, 0); | |
32d08644 KH |
770 | else |
771 | { /* We have to decode the input. */ | |
f0b950cf KH |
772 | int size; |
773 | char *decoding_buf; | |
32d08644 | 774 | |
f0b950cf KH |
775 | repeat_decoding: |
776 | size = decoding_buffer_size (&process_coding, nread); | |
777 | decoding_buf = (char *) xmalloc (size); | |
2d892150 KH |
778 | if (process_coding.cmp_data) |
779 | process_coding.cmp_data->char_offset = PT; | |
321fecde KH |
780 | decode_coding (&process_coding, bufptr, decoding_buf, |
781 | nread, size); | |
7a7ab107 KH |
782 | if (display_on_the_fly |
783 | && saved_coding.type == coding_type_undecided | |
784 | && process_coding.type != coding_type_undecided) | |
785 | { | |
786 | /* We have detected some coding system. But, | |
787 | there's a possibility that the detection was | |
788 | done by insufficient data. So, we give up | |
789 | displaying on the fly. */ | |
a871dd58 | 790 | xfree (decoding_buf); |
7a7ab107 KH |
791 | display_on_the_fly = 0; |
792 | process_coding = saved_coding; | |
793 | carryover = nread; | |
794 | continue; | |
795 | } | |
321fecde | 796 | if (process_coding.produced > 0) |
2d892150 KH |
797 | insert_1_both (decoding_buf, process_coding.produced_char, |
798 | process_coding.produced, 0, 1, 0); | |
a871dd58 | 799 | xfree (decoding_buf); |
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); | |
f0b950cf KH |
807 | if (process_coding.result == CODING_FINISH_INSUFFICIENT_CMP) |
808 | { | |
809 | /* The decoding ended because of insufficient data | |
810 | area to record information about composition. | |
811 | We must try decoding with additional data area | |
2d892150 | 812 | before reading more output for the process. */ |
f0b950cf KH |
813 | coding_allocate_composition_data (&process_coding, PT); |
814 | goto repeat_decoding; | |
815 | } | |
32d08644 KH |
816 | } |
817 | } | |
c5bfa12b | 818 | |
321fecde | 819 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 820 | break; |
6e3bfbb2 RS |
821 | |
822 | /* Make the buffer bigger as we continue to read more data, | |
823 | but not past 64k. */ | |
824 | if (bufsize < 64 * 1024 && total_read > 32 * bufsize) | |
825 | { | |
826 | bufsize *= 2; | |
827 | bufptr = (char *) alloca (bufsize); | |
828 | } | |
829 | ||
012c6fcb | 830 | if (!NILP (display) && INTERACTIVE) |
0ad477db RS |
831 | { |
832 | if (first) | |
833 | prepare_menu_bars (); | |
834 | first = 0; | |
835 | redisplay_preserve_echo_area (); | |
836 | } | |
80856e74 JB |
837 | immediate_quit = 1; |
838 | QUIT; | |
839 | } | |
60558b19 | 840 | give_up: ; |
80856e74 | 841 | |
2d892150 KH |
842 | if (!NILP (buffer) |
843 | && process_coding.cmp_data) | |
844 | { | |
845 | coding_restore_composition (&process_coding, Fcurrent_buffer ()); | |
846 | coding_free_composition_data (&process_coding); | |
847 | } | |
f0b950cf | 848 | |
f778b157 KH |
849 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
850 | inserted = PT - pt_orig; | |
851 | TEMP_SET_PT_BOTH (pt_orig, pt_byte_orig); | |
852 | if (SYMBOLP (process_coding.post_read_conversion) | |
853 | && !NILP (Ffboundp (process_coding.post_read_conversion))) | |
854 | call1 (process_coding.post_read_conversion, make_number (inserted)); | |
855 | ||
bca78757 | 856 | Vlast_coding_system_used = process_coding.symbol; |
bbd29cfe | 857 | |
bca78757 KH |
858 | /* If the caller required, let the buffer inherit the |
859 | coding-system used to decode the process output. */ | |
860 | if (inherit_process_coding_system) | |
861 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
862 | make_number (total_read)); | |
3b440bb5 EZ |
863 | } |
864 | ||
80856e74 JB |
865 | /* Wait for it to terminate, unless it already has. */ |
866 | wait_for_termination (pid); | |
867 | ||
868 | immediate_quit = 0; | |
869 | ||
870 | set_buffer_internal (old); | |
871 | ||
37d54121 RS |
872 | /* Don't kill any children that the subprocess may have left behind |
873 | when exiting. */ | |
874 | call_process_exited = 1; | |
875 | ||
80856e74 JB |
876 | unbind_to (count, Qnil); |
877 | ||
80856e74 | 878 | if (synch_process_death) |
68c45bf0 PE |
879 | return code_convert_string_norecord (build_string (synch_process_death), |
880 | Vlocale_coding_system, 0); | |
80856e74 JB |
881 | return make_number (synch_process_retcode); |
882 | } | |
883 | #endif | |
884 | \f | |
9fefd2ba | 885 | static Lisp_Object |
80856e74 JB |
886 | delete_temp_file (name) |
887 | Lisp_Object name; | |
888 | { | |
2e3dc201 | 889 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 890 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 891 | internal_delete_file (name); |
320695d8 | 892 | return Qnil; |
80856e74 JB |
893 | } |
894 | ||
895 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
896 | 3, MANY, 0, | |
897 | "Send text from START to END to a synchronous process running PROGRAM.\n\ | |
edf496dd | 898 | The remaining arguments are optional.\n\ |
80856e74 | 899 | Delete the text if fourth arg DELETE is non-nil.\n\ |
39eaa782 | 900 | \n\ |
80856e74 JB |
901 | Insert output in BUFFER before point; t means current buffer;\n\ |
902 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
903 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
904 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
905 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
906 | STDERR-FILE may be nil (discard standard error output),\n\ | |
907 | t (mix it with ordinary output), or a file name string.\n\ | |
908 | \n\ | |
80856e74 JB |
909 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
910 | Remaining args are passed to PROGRAM at startup as command args.\n\ | |
39eaa782 RS |
911 | \n\ |
912 | If BUFFER is nil, `call-process-region' returns immediately with value nil.\n\ | |
913 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 914 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 915 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
916 | (nargs, args) |
917 | int nargs; | |
918 | register Lisp_Object *args; | |
919 | { | |
39323a7e KH |
920 | struct gcpro gcpro1; |
921 | Lisp_Object filename_string; | |
922 | register Lisp_Object start, end; | |
d3e81d0a | 923 | int count = specpdl_ptr - specpdl; |
08ee4e87 | 924 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 925 | Lisp_Object coding_systems; |
32d08644 KH |
926 | Lisp_Object val, *args2; |
927 | int i; | |
bad95d8f | 928 | #ifdef DOS_NT |
7e6c2178 | 929 | char *tempfile; |
7e6c2178 RS |
930 | char *outf = '\0'; |
931 | ||
8a52365c EZ |
932 | if ((outf = egetenv ("TMPDIR")) |
933 | || (outf = egetenv ("TMP")) | |
934 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
935 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
936 | else | |
937 | { | |
938 | tempfile = alloca (20); | |
939 | *tempfile = '\0'; | |
940 | } | |
0774fcf8 | 941 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 942 | strcat (tempfile, "/"); |
5711b547 RS |
943 | if ('/' == DIRECTORY_SEP) |
944 | dostounix_filename (tempfile); | |
945 | else | |
946 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
947 | #ifdef WINDOWSNT |
948 | strcat (tempfile, "emXXXXXX"); | |
949 | #else | |
7e6c2178 | 950 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 951 | #endif |
bad95d8f | 952 | #else /* not DOS_NT */ |
fc932ac6 | 953 | char *tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
8abd035b | 954 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, |
fc932ac6 | 955 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
bad95d8f | 956 | #endif /* not DOS_NT */ |
7e6c2178 | 957 | |
09494912 RS |
958 | coding_systems = Qt; |
959 | ||
80856e74 JB |
960 | mktemp (tempfile); |
961 | ||
962 | filename_string = build_string (tempfile); | |
39323a7e | 963 | GCPRO1 (filename_string); |
80856e74 JB |
964 | start = args[0]; |
965 | end = args[1]; | |
32d08644 | 966 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
967 | if (!NILP (Vcoding_system_for_write)) |
968 | val = Vcoding_system_for_write; | |
969 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
970 | val = Qnil; |
971 | else | |
beacaab3 | 972 | { |
91489411 RS |
973 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
974 | args2[0] = Qcall_process_region; | |
975 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
976 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
977 | if (CONSP (coding_systems)) | |
70949dac | 978 | val = XCDR (coding_systems); |
91489411 | 979 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 980 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 981 | else |
91489411 | 982 | val = Qnil; |
beacaab3 | 983 | } |
32d08644 | 984 | |
168afdaa RS |
985 | { |
986 | int count1 = specpdl_ptr - specpdl; | |
987 | ||
988 | specbind (intern ("coding-system-for-write"), val); | |
989 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); | |
990 | ||
991 | unbind_to (count1, Qnil); | |
992 | } | |
91489411 RS |
993 | |
994 | /* Note that Fcall_process takes care of binding | |
995 | coding-system-for-read. */ | |
093650fe | 996 | |
80856e74 JB |
997 | record_unwind_protect (delete_temp_file, filename_string); |
998 | ||
edf496dd | 999 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
1000 | Fdelete_region (start, end); |
1001 | ||
edf496dd KH |
1002 | if (nargs > 3) |
1003 | { | |
1004 | args += 2; | |
1005 | nargs -= 2; | |
1006 | } | |
1007 | else | |
1008 | { | |
1009 | args[0] = args[2]; | |
1010 | nargs = 2; | |
1011 | } | |
1012 | args[1] = filename_string; | |
80856e74 | 1013 | |
edf496dd | 1014 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
1015 | } |
1016 | \f | |
1017 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
1018 | ||
dfcf069d AS |
1019 | static int relocate_fd (); |
1020 | ||
80856e74 JB |
1021 | /* This is the last thing run in a newly forked inferior |
1022 | either synchronous or asynchronous. | |
1023 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1024 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1025 | then exec another program based on new_argv. | |
1026 | ||
1027 | This function may change environ for the superior process. | |
1028 | Therefore, the superior process must save and restore the value | |
1029 | of environ around the vfork and the call to this function. | |
1030 | ||
80856e74 | 1031 | SET_PGRP is nonzero if we should put the subprocess into a separate |
e576cab4 JB |
1032 | process group. |
1033 | ||
1034 | CURRENT_DIR is an elisp string giving the path of the current | |
1035 | directory the subprocess should have. Since we can't really signal | |
1036 | a decent error from within the child, this should be verified as an | |
1037 | executable directory by the parent. */ | |
80856e74 | 1038 | |
dfcf069d | 1039 | int |
e576cab4 | 1040 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1041 | int in, out, err; |
1042 | register char **new_argv; | |
80856e74 | 1043 | int set_pgrp; |
e576cab4 | 1044 | Lisp_Object current_dir; |
80856e74 | 1045 | { |
e576cab4 | 1046 | char **env; |
7fcf7f05 | 1047 | char *pwd_var; |
bad95d8f RS |
1048 | #ifdef WINDOWSNT |
1049 | int cpid; | |
4252a4bd | 1050 | HANDLE handles[3]; |
bad95d8f | 1051 | #endif /* WINDOWSNT */ |
e576cab4 | 1052 | |
33abe2d9 | 1053 | int pid = getpid (); |
80856e74 | 1054 | |
68d10241 | 1055 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 JB |
1056 | { |
1057 | extern int emacs_priority; | |
1058 | ||
68d10241 RS |
1059 | if (emacs_priority < 0) |
1060 | nice (- emacs_priority); | |
4f0b9d49 | 1061 | } |
5b633aeb | 1062 | #endif |
80856e74 JB |
1063 | |
1064 | #ifdef subprocesses | |
1065 | /* Close Emacs's descriptors that this process should not have. */ | |
1066 | close_process_descs (); | |
1067 | #endif | |
c17c4250 EZ |
1068 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1069 | we will lose if we call close_load_descs here. */ | |
1070 | #ifndef DOS_NT | |
4458cebe | 1071 | close_load_descs (); |
c17c4250 | 1072 | #endif |
80856e74 JB |
1073 | |
1074 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1075 | that do not have true vfork or that have true (stack) alloca. | |
1076 | If using vfork and C_ALLOCA it is safe because that changes | |
1077 | the superior's static variables as if the superior had done alloca | |
1078 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1079 | { |
7fcf7f05 | 1080 | register char *temp; |
e576cab4 | 1081 | register int i; |
77d78be1 | 1082 | |
fc932ac6 | 1083 | i = STRING_BYTES (XSTRING (current_dir)); |
16425c4a EZ |
1084 | #ifdef MSDOS |
1085 | /* MSDOS must have all environment variables malloc'ed, because | |
1086 | low-level libc functions that launch subsidiary processes rely | |
1087 | on that. */ | |
1088 | pwd_var = (char *) xmalloc (i + 6); | |
1089 | #else | |
7fcf7f05 | 1090 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1091 | #endif |
7fcf7f05 RS |
1092 | temp = pwd_var + 4; |
1093 | bcopy ("PWD=", pwd_var, 4); | |
e576cab4 | 1094 | bcopy (XSTRING (current_dir)->data, temp, i); |
bad95d8f | 1095 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1096 | temp[i] = 0; |
1097 | ||
c17c4250 | 1098 | #ifndef DOS_NT |
e576cab4 JB |
1099 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1100 | the callers check the current directory before forking, this | |
1101 | should only return an error if the directory's permissions | |
1102 | are changed between the check and this chdir, but we should | |
1103 | at least check. */ | |
1104 | if (chdir (temp) < 0) | |
20b25e46 | 1105 | _exit (errno); |
b4c7684c | 1106 | #endif |
7fcf7f05 | 1107 | |
c17c4250 EZ |
1108 | #ifdef DOS_NT |
1109 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1110 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1111 | { | |
1112 | temp += 2; | |
1113 | i -= 2; | |
1114 | } | |
1115 | #endif | |
1116 | ||
7fcf7f05 | 1117 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1118 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1119 | temp[--i] = 0; |
e576cab4 | 1120 | } |
80856e74 | 1121 | |
80856e74 JB |
1122 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1123 | { | |
1124 | register Lisp_Object tem; | |
1125 | register char **new_env; | |
1126 | register int new_length; | |
1127 | ||
1128 | new_length = 0; | |
1129 | for (tem = Vprocess_environment; | |
70949dac KR |
1130 | CONSP (tem) && STRINGP (XCAR (tem)); |
1131 | tem = XCDR (tem)) | |
80856e74 JB |
1132 | new_length++; |
1133 | ||
7fcf7f05 RS |
1134 | /* new_length + 2 to include PWD and terminating 0. */ |
1135 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1136 | ||
1137 | /* If we have a PWD envvar, pass one down, | |
1138 | but with corrected value. */ | |
1139 | if (getenv ("PWD")) | |
1140 | *new_env++ = pwd_var; | |
80856e74 | 1141 | |
cd9565ba | 1142 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1143 | for (tem = Vprocess_environment; |
70949dac KR |
1144 | CONSP (tem) && STRINGP (XCAR (tem)); |
1145 | tem = XCDR (tem)) | |
cd9565ba RS |
1146 | { |
1147 | char **ep = env; | |
70949dac | 1148 | char *string = (char *) XSTRING (XCAR (tem))->data; |
cd9565ba RS |
1149 | /* See if this string duplicates any string already in the env. |
1150 | If so, don't put it in. | |
1151 | When an env var has multiple definitions, | |
1152 | we keep the definition that comes first in process-environment. */ | |
1153 | for (; ep != new_env; ep++) | |
1154 | { | |
1155 | char *p = *ep, *q = string; | |
1156 | while (1) | |
1157 | { | |
1158 | if (*q == 0) | |
1159 | /* The string is malformed; might as well drop it. */ | |
1160 | goto duplicate; | |
1161 | if (*q != *p) | |
1162 | break; | |
1163 | if (*q == '=') | |
1164 | goto duplicate; | |
1165 | p++, q++; | |
1166 | } | |
1167 | } | |
1168 | *new_env++ = string; | |
1169 | duplicate: ; | |
1170 | } | |
80856e74 JB |
1171 | *new_env = 0; |
1172 | } | |
bad95d8f RS |
1173 | #ifdef WINDOWSNT |
1174 | prepare_standard_handles (in, out, err, handles); | |
b4c7684c | 1175 | set_process_dir (XSTRING (current_dir)->data); |
bad95d8f | 1176 | #else /* not WINDOWSNT */ |
426b37ae JB |
1177 | /* Make sure that in, out, and err are not actually already in |
1178 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1179 | started with its standard in, out, or error closed, as might |
426b37ae | 1180 | happen under X. */ |
f29f9e4a RS |
1181 | { |
1182 | int oin = in, oout = out; | |
1183 | ||
1184 | /* We have to avoid relocating the same descriptor twice! */ | |
1185 | ||
1186 | in = relocate_fd (in, 3); | |
1187 | ||
1188 | if (out == oin) | |
1189 | out = in; | |
1190 | else | |
3e9367e7 | 1191 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1192 | |
1193 | if (err == oin) | |
1194 | err = in; | |
1195 | else if (err == oout) | |
1196 | err = out; | |
1197 | else | |
3e9367e7 | 1198 | err = relocate_fd (err, 3); |
f29f9e4a | 1199 | } |
426b37ae | 1200 | |
c17c4250 | 1201 | #ifndef MSDOS |
68c45bf0 PE |
1202 | emacs_close (0); |
1203 | emacs_close (1); | |
1204 | emacs_close (2); | |
80856e74 JB |
1205 | |
1206 | dup2 (in, 0); | |
1207 | dup2 (out, 1); | |
1208 | dup2 (err, 2); | |
68c45bf0 PE |
1209 | emacs_close (in); |
1210 | emacs_close (out); | |
1211 | emacs_close (err); | |
c17c4250 | 1212 | #endif /* not MSDOS */ |
bad95d8f | 1213 | #endif /* not WINDOWSNT */ |
80856e74 | 1214 | |
6b2cd868 | 1215 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1216 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1217 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1218 | #endif |
e576cab4 JB |
1219 | #else |
1220 | setpgrp (pid, pid); | |
1221 | #endif /* USG */ | |
a129418f RS |
1222 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1223 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 JB |
1224 | |
1225 | #ifdef vipc | |
1226 | something missing here; | |
1227 | #endif /* vipc */ | |
1228 | ||
c17c4250 EZ |
1229 | #ifdef MSDOS |
1230 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
16425c4a | 1231 | free (pwd_var); |
c17c4250 EZ |
1232 | if (pid == -1) |
1233 | /* An error occurred while trying to run the subprocess. */ | |
1234 | report_file_error ("Spawning child process", Qnil); | |
1235 | return pid; | |
1236 | #else /* not MSDOS */ | |
bad95d8f RS |
1237 | #ifdef WINDOWSNT |
1238 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1239 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1240 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1241 | if (cpid == -1) |
1242 | /* An error occurred while trying to spawn the process. */ | |
1243 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1244 | return cpid; |
1245 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1246 | /* execvp does not accept an environment arg so the only way |
1247 | to pass this environment is to set environ. Our caller | |
1248 | is responsible for restoring the ambient value of environ. */ | |
1249 | environ = env; | |
1250 | execvp (new_argv[0], new_argv); | |
1251 | ||
68c45bf0 PE |
1252 | emacs_write (1, "Can't exec program: ", 20); |
1253 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1254 | emacs_write (1, "\n", 1); | |
80856e74 | 1255 | _exit (1); |
bad95d8f | 1256 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1257 | #endif /* not MSDOS */ |
80856e74 JB |
1258 | } |
1259 | ||
a3833dfe | 1260 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1261 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1262 | static int |
a3833dfe KH |
1263 | relocate_fd (fd, minfd) |
1264 | int fd, minfd; | |
426b37ae | 1265 | { |
a3833dfe | 1266 | if (fd >= minfd) |
426b37ae JB |
1267 | return fd; |
1268 | else | |
1269 | { | |
1270 | int new = dup (fd); | |
1271 | if (new == -1) | |
1272 | { | |
20c018a0 | 1273 | char *message1 = "Error while setting up child: "; |
826c56ac | 1274 | char *errmessage = strerror (errno); |
20c018a0 | 1275 | char *message2 = "\n"; |
68c45bf0 PE |
1276 | emacs_write (2, message1, strlen (message1)); |
1277 | emacs_write (2, errmessage, strlen (errmessage)); | |
1278 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1279 | _exit (1); |
1280 | } | |
1281 | /* Note that we hold the original FD open while we recurse, | |
1282 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1283 | new = relocate_fd (new, minfd); |
68c45bf0 | 1284 | emacs_close (fd); |
426b37ae JB |
1285 | return new; |
1286 | } | |
1287 | } | |
1288 | ||
012c6fcb JA |
1289 | static int |
1290 | getenv_internal (var, varlen, value, valuelen) | |
1291 | char *var; | |
1292 | int varlen; | |
1293 | char **value; | |
1294 | int *valuelen; | |
1295 | { | |
1296 | Lisp_Object scan; | |
1297 | ||
70949dac | 1298 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1299 | { |
c1350752 KH |
1300 | Lisp_Object entry; |
1301 | ||
70949dac | 1302 | entry = XCAR (scan); |
d50d3dc8 | 1303 | if (STRINGP (entry) |
fc932ac6 | 1304 | && STRING_BYTES (XSTRING (entry)) > varlen |
012c6fcb | 1305 | && XSTRING (entry)->data[varlen] == '=' |
bad95d8f RS |
1306 | #ifdef WINDOWSNT |
1307 | /* NT environment variables are case insensitive. */ | |
a9971c6d | 1308 | && ! strnicmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1309 | #else /* not WINDOWSNT */ |
a9971c6d | 1310 | && ! bcmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1311 | #endif /* not WINDOWSNT */ |
a9971c6d | 1312 | ) |
012c6fcb JA |
1313 | { |
1314 | *value = (char *) XSTRING (entry)->data + (varlen + 1); | |
fc932ac6 | 1315 | *valuelen = STRING_BYTES (XSTRING (entry)) - (varlen + 1); |
012c6fcb JA |
1316 | return 1; |
1317 | } | |
1318 | } | |
1319 | ||
1320 | return 0; | |
1321 | } | |
1322 | ||
83fa009c | 1323 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0, |
012c6fcb JA |
1324 | "Return the value of environment variable VAR, as a string.\n\ |
1325 | VAR should be a string. Value is nil if VAR is undefined in the environment.\n\ | |
1326 | This function consults the variable ``process-environment'' for its value.") | |
1327 | (var) | |
1328 | Lisp_Object var; | |
1329 | { | |
1330 | char *value; | |
1331 | int valuelen; | |
1332 | ||
1333 | CHECK_STRING (var, 0); | |
fc932ac6 | 1334 | if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)), |
012c6fcb JA |
1335 | &value, &valuelen)) |
1336 | return make_string (value, valuelen); | |
1337 | else | |
1338 | return Qnil; | |
1339 | } | |
1340 | ||
1341 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1342 | callable from C. */ |
012c6fcb JA |
1343 | char * |
1344 | egetenv (var) | |
e576cab4 | 1345 | char *var; |
012c6fcb JA |
1346 | { |
1347 | char *value; | |
1348 | int valuelen; | |
1349 | ||
1350 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1351 | return value; | |
1352 | else | |
1353 | return 0; | |
1354 | } | |
1355 | ||
80856e74 JB |
1356 | #endif /* not VMS */ |
1357 | \f | |
8de15d69 | 1358 | /* This is run before init_cmdargs. */ |
7e6c2178 | 1359 | |
dfcf069d | 1360 | void |
8de15d69 RS |
1361 | init_callproc_1 () |
1362 | { | |
1363 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1364 | char *doc_dir = egetenv ("EMACSDOC"); |
1365 | ||
8de15d69 | 1366 | Vdata_directory |
7e6c2178 | 1367 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1368 | : PATH_DATA)); |
35a2f4b8 KH |
1369 | Vdoc_directory |
1370 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1371 | : PATH_DOC)); | |
9453ea7b | 1372 | |
e576cab4 | 1373 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1374 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1375 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1376 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1377 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1378 | } |
1379 | ||
e17f7533 | 1380 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1381 | |
dfcf069d | 1382 | void |
8de15d69 RS |
1383 | init_callproc () |
1384 | { | |
1385 | char *data_dir = egetenv ("EMACSDATA"); | |
1386 | ||
1387 | register char * sh; | |
1388 | Lisp_Object tempdir; | |
1389 | ||
9cc4fad5 | 1390 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1391 | { |
05630743 RS |
1392 | /* Add to the path the lib-src subdir of the installation dir. */ |
1393 | Lisp_Object tem; | |
1394 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1395 | Vinstallation_directory); | |
bad95d8f | 1396 | #ifndef DOS_NT |
1a6640ec | 1397 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc RS |
1398 | if (NILP (Fmember (tem, Vexec_path))) |
1399 | Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil)); | |
1400 | ||
1401 | Vexec_directory = Ffile_name_as_directory (tem); | |
bad95d8f | 1402 | #endif /* not DOS_NT */ |
8de15d69 | 1403 | |
e17f7533 RS |
1404 | /* Maybe use ../etc as well as ../lib-src. */ |
1405 | if (data_dir == 0) | |
1406 | { | |
1407 | tem = Fexpand_file_name (build_string ("etc"), | |
1408 | Vinstallation_directory); | |
1409 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1410 | } |
1411 | } | |
7e933683 RS |
1412 | |
1413 | /* Look for the files that should be in etc. We don't use | |
1414 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1415 | near the executable, and they are never in the build |
7e933683 RS |
1416 | directory when that's different from the source directory. |
1417 | ||
1418 | Instead, if these files are not in the nominal place, we try the | |
1419 | source directory. */ | |
1420 | if (data_dir == 0) | |
1421 | { | |
1422 | Lisp_Object tem, tem1, newdir; | |
1423 | ||
1424 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); | |
1425 | tem1 = Ffile_exists_p (tem); | |
1426 | if (NILP (tem1)) | |
1427 | { | |
1428 | newdir = Fexpand_file_name (build_string ("../etc/"), | |
1429 | build_string (PATH_DUMPLOADSEARCH)); | |
1430 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1431 | tem1 = Ffile_exists_p (tem); | |
1432 | if (!NILP (tem1)) | |
1433 | Vdata_directory = newdir; | |
1434 | } | |
1435 | } | |
80856e74 | 1436 | |
d883eb62 RS |
1437 | #ifndef CANNOT_DUMP |
1438 | if (initialized) | |
1439 | #endif | |
1440 | { | |
1441 | tempdir = Fdirectory_file_name (Vexec_directory); | |
1442 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
1443 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", | |
1444 | Vexec_directory); | |
1445 | } | |
80856e74 | 1446 | |
e576cab4 JB |
1447 | tempdir = Fdirectory_file_name (Vdata_directory); |
1448 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
76d5c6cf RS |
1449 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1450 | Vdata_directory); | |
e576cab4 | 1451 | |
80856e74 JB |
1452 | #ifdef VMS |
1453 | Vshell_file_name = build_string ("*dcl*"); | |
1454 | #else | |
e576cab4 | 1455 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1456 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1457 | #endif | |
8abd035b RS |
1458 | |
1459 | #ifdef VMS | |
1460 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1461 | #else | |
1462 | if (getenv ("TMPDIR")) | |
1463 | { | |
1464 | char *dir = getenv ("TMPDIR"); | |
1465 | Vtemp_file_name_pattern | |
1466 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1467 | build_string (dir)); | |
1468 | } | |
1469 | else | |
1470 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1471 | #endif | |
9fefd2ba JB |
1472 | } |
1473 | ||
dfcf069d | 1474 | void |
9fefd2ba JB |
1475 | set_process_environment () |
1476 | { | |
1477 | register char **envp; | |
80856e74 | 1478 | |
80856e74 JB |
1479 | Vprocess_environment = Qnil; |
1480 | #ifndef CANNOT_DUMP | |
1481 | if (initialized) | |
1482 | #endif | |
1483 | for (envp = environ; *envp; envp++) | |
1484 | Vprocess_environment = Fcons (build_string (*envp), | |
1485 | Vprocess_environment); | |
80856e74 JB |
1486 | } |
1487 | ||
dfcf069d | 1488 | void |
80856e74 JB |
1489 | syms_of_callproc () |
1490 | { | |
bad95d8f | 1491 | #ifdef DOS_NT |
093650fe RS |
1492 | Qbuffer_file_type = intern ("buffer-file-type"); |
1493 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1494 | #endif /* DOS_NT */ |
7e6c2178 | 1495 | |
80856e74 JB |
1496 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
1497 | "*File name to load inferior shells from.\n\ | |
1498 | Initialized from the SHELL environment variable."); | |
1499 | ||
1500 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
1501 | "*List of directories to search programs to run in subprocesses.\n\ | |
1502 | Each element is a string (directory name) or nil (try default directory)."); | |
1503 | ||
1504 | DEFVAR_LISP ("exec-directory", &Vexec_directory, | |
57ca9855 RS |
1505 | "Directory for executables for Emacs to invoke.\n\ |
1506 | More generally, this includes any architecture-dependent files\n\ | |
1507 | that are built and installed from the Emacs distribution."); | |
e576cab4 JB |
1508 | |
1509 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
57ca9855 RS |
1510 | "Directory of machine-independent files that come with GNU Emacs.\n\ |
1511 | These are files intended for Emacs to use while it runs."); | |
80856e74 | 1512 | |
35a2f4b8 KH |
1513 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
1514 | "Directory containing the DOC file that comes with GNU Emacs.\n\ | |
1515 | This is usually the same as data-directory."); | |
1516 | ||
ed61592a JB |
1517 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
1518 | "For internal use by the build procedure only.\n\ | |
1519 | This is the name of the directory in which the build procedure installed\n\ | |
1520 | Emacs's info files; the default value for Info-default-directory-list\n\ | |
1521 | includes this."); | |
1522 | Vconfigure_info_directory = build_string (PATH_INFO); | |
1523 | ||
8abd035b RS |
1524 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
1525 | "Pattern for making names for temporary files.\n\ | |
1526 | This is used by `call-process-region'."); | |
0537ec48 | 1527 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1528 | |
80856e74 | 1529 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
e576cab4 JB |
1530 | "List of environment variables for subprocesses to inherit.\n\ |
1531 | Each element should be a string of the form ENVVARNAME=VALUE.\n\ | |
1532 | The environment which Emacs inherits is placed in this variable\n\ | |
1533 | when Emacs starts."); | |
80856e74 JB |
1534 | |
1535 | #ifndef VMS | |
1536 | defsubr (&Scall_process); | |
83fa009c | 1537 | defsubr (&Sgetenv_internal); |
986ffb24 | 1538 | #endif |
e576cab4 | 1539 | defsubr (&Scall_process_region); |
80856e74 | 1540 | } |