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) |
f95c3f91 GM |
96 | #define setpgrp setpgid |
97 | #endif | |
2b7e8799 | 98 | #endif |
f95c3f91 | 99 | |
80856e74 JB |
100 | #define max(a, b) ((a) > (b) ? (a) : (b)) |
101 | ||
35a2f4b8 | 102 | Lisp_Object Vexec_path, Vexec_directory, Vdata_directory, Vdoc_directory; |
ed61592a | 103 | Lisp_Object Vconfigure_info_directory; |
8abd035b | 104 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
105 | |
106 | Lisp_Object Vshell_file_name; | |
107 | ||
80856e74 | 108 | Lisp_Object Vprocess_environment; |
80856e74 | 109 | |
bad95d8f | 110 | #ifdef DOS_NT |
093650fe | 111 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 112 | #endif /* DOS_NT */ |
093650fe | 113 | |
80856e74 JB |
114 | /* True iff we are about to fork off a synchronous process or if we |
115 | are waiting for it. */ | |
116 | int synch_process_alive; | |
117 | ||
118 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
119 | char *synch_process_death; | |
120 | ||
121 | /* If synch_process_death is zero, | |
122 | this is exit code of synchronous subprocess. */ | |
123 | int synch_process_retcode; | |
8de15d69 RS |
124 | |
125 | extern Lisp_Object Vdoc_file_name; | |
89e1ec1d | 126 | |
8d024345 | 127 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
80856e74 | 128 | \f |
37d54121 RS |
129 | /* Clean up when exiting Fcall_process. |
130 | On MSDOS, delete the temporary file on any kind of termination. | |
131 | On Unix, kill the process and any children on termination by signal. */ | |
132 | ||
133 | /* Nonzero if this is termination due to exit. */ | |
134 | static int call_process_exited; | |
135 | ||
80856e74 JB |
136 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
137 | ||
d177f194 JB |
138 | static Lisp_Object |
139 | call_process_kill (fdpid) | |
140 | Lisp_Object fdpid; | |
141 | { | |
68c45bf0 | 142 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
143 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
144 | synch_process_alive = 0; | |
145 | return Qnil; | |
146 | } | |
147 | ||
80856e74 JB |
148 | Lisp_Object |
149 | call_process_cleanup (fdpid) | |
150 | Lisp_Object fdpid; | |
151 | { | |
052062e0 | 152 | #if defined (MSDOS) || defined (macintosh) |
7e6c2178 | 153 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
154 | register Lisp_Object file; |
155 | file = Fcdr (fdpid); | |
68c45bf0 | 156 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 RS |
157 | if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) |
158 | unlink (XSTRING (file)->data); | |
052062e0 | 159 | #else /* not MSDOS and not macintosh */ |
d177f194 JB |
160 | register int pid = XFASTINT (Fcdr (fdpid)); |
161 | ||
37d54121 | 162 | if (call_process_exited) |
6b6e798b | 163 | { |
68c45bf0 | 164 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
165 | return Qnil; |
166 | } | |
37d54121 | 167 | |
d177f194 JB |
168 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
169 | { | |
170 | int count = specpdl_ptr - specpdl; | |
171 | record_unwind_protect (call_process_kill, fdpid); | |
172 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
173 | immediate_quit = 1; | |
174 | QUIT; | |
175 | wait_for_termination (pid); | |
176 | immediate_quit = 0; | |
177 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
178 | message1 ("Waiting for process to die...done"); | |
179 | } | |
80856e74 | 180 | synch_process_alive = 0; |
68c45bf0 | 181 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 182 | #endif /* not MSDOS */ |
80856e74 JB |
183 | return Qnil; |
184 | } | |
185 | ||
186 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
187 | "Call PROGRAM synchronously in separate process.\n\ | |
edf496dd | 188 | The remaining arguments are optional.\n\ |
80856e74 JB |
189 | The program's input comes from file INFILE (nil means `/dev/null').\n\ |
190 | Insert output in BUFFER before point; t means current buffer;\n\ | |
191 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
192 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
193 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
194 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
195 | STDERR-FILE may be nil (discard standard error output),\n\ | |
196 | t (mix it with ordinary output), or a file name string.\n\ | |
197 | \n\ | |
80856e74 JB |
198 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
199 | Remaining arguments are strings passed as command arguments to PROGRAM.\n\ | |
39eaa782 RS |
200 | \n\ |
201 | If BUFFER is 0, `call-process' returns immediately with value nil.\n\ | |
202 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 203 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 204 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
205 | (nargs, args) |
206 | int nargs; | |
207 | register Lisp_Object *args; | |
208 | { | |
58616e67 | 209 | Lisp_Object infile, buffer, current_dir, display, path; |
80856e74 JB |
210 | int fd[2]; |
211 | int filefd; | |
212 | register int pid; | |
6e3bfbb2 RS |
213 | char buf[16384]; |
214 | char *bufptr = buf; | |
215 | int bufsize = 16384; | |
80856e74 | 216 | int count = specpdl_ptr - specpdl; |
2d607244 | 217 | |
80856e74 JB |
218 | register unsigned char **new_argv |
219 | = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
220 | struct buffer *old = current_buffer; | |
39eaa782 RS |
221 | /* File to use for stderr in the child. |
222 | t means use same as standard output. */ | |
223 | Lisp_Object error_file; | |
7e6c2178 RS |
224 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
225 | char *outf, *tempfile; | |
226 | int outfilefd; | |
227 | #endif | |
052062e0 RS |
228 | #ifdef macintosh |
229 | char *tempfile; | |
230 | int outfilefd; | |
231 | #endif | |
80856e74 JB |
232 | #if 0 |
233 | int mask; | |
234 | #endif | |
32d08644 KH |
235 | struct coding_system process_coding; /* coding-system of process output */ |
236 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
237 | /* Set to the return value of Ffind_operation_coding_system. */ |
238 | Lisp_Object coding_systems; | |
239 | ||
240 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
241 | coding_systems = Qt; | |
32d08644 | 242 | |
80856e74 JB |
243 | CHECK_STRING (args[0], 0); |
244 | ||
39eaa782 RS |
245 | error_file = Qt; |
246 | ||
7e6c2178 RS |
247 | #ifndef subprocesses |
248 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
3ffde7d6 | 249 | if (nargs >= 3 |
09ffb8b5 | 250 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
251 | error ("Operating system cannot handle asynchronous subprocesses"); |
252 | #endif /* subprocesses */ | |
253 | ||
09494912 | 254 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
255 | { |
256 | Lisp_Object val, *args2; | |
32d08644 KH |
257 | int i; |
258 | ||
259 | /* If arguments are supplied, we may have to encode them. */ | |
260 | if (nargs >= 5) | |
261 | { | |
30d57b8e RS |
262 | int must_encode = 0; |
263 | ||
e7c1c20e RS |
264 | for (i = 4; i < nargs; i++) |
265 | CHECK_STRING (args[i], i); | |
266 | ||
a2286b5c | 267 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
268 | if (STRING_MULTIBYTE (args[i])) |
269 | must_encode = 1; | |
270 | ||
beacaab3 KH |
271 | if (!NILP (Vcoding_system_for_write)) |
272 | val = Vcoding_system_for_write; | |
30d57b8e | 273 | else if (! must_encode) |
beacaab3 KH |
274 | val = Qnil; |
275 | else | |
32d08644 KH |
276 | { |
277 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
278 | args2[0] = Qcall_process; | |
279 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 280 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 281 | if (CONSP (coding_systems)) |
70949dac | 282 | val = XCDR (coding_systems); |
776b95cb | 283 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 284 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
285 | else |
286 | val = Qnil; | |
32d08644 KH |
287 | } |
288 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); | |
289 | } | |
32d08644 KH |
290 | } |
291 | ||
e576cab4 JB |
292 | if (nargs >= 2 && ! NILP (args[1])) |
293 | { | |
294 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
295 | CHECK_STRING (infile, 1); | |
296 | } | |
80856e74 | 297 | else |
5437e9f9 | 298 | infile = build_string (NULL_DEVICE); |
80856e74 | 299 | |
e576cab4 JB |
300 | if (nargs >= 3) |
301 | { | |
39eaa782 RS |
302 | buffer = args[2]; |
303 | ||
304 | /* If BUFFER is a list, its meaning is | |
305 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
306 | if (CONSP (buffer)) | |
307 | { | |
70949dac | 308 | if (CONSP (XCDR (buffer))) |
45be8a1e | 309 | { |
a9d4f28a | 310 | Lisp_Object stderr_file; |
70949dac | 311 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
312 | |
313 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
314 | error_file = stderr_file; | |
315 | else | |
316 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
317 | } | |
318 | ||
70949dac | 319 | buffer = XCAR (buffer); |
39eaa782 | 320 | } |
044512ed | 321 | |
39eaa782 RS |
322 | if (!(EQ (buffer, Qnil) |
323 | || EQ (buffer, Qt) | |
3ffde7d6 | 324 | || INTEGERP (buffer))) |
e576cab4 | 325 | { |
39eaa782 RS |
326 | Lisp_Object spec_buffer; |
327 | spec_buffer = buffer; | |
50fe359b | 328 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
329 | /* Mention the buffer name for a better error message. */ |
330 | if (NILP (buffer)) | |
331 | CHECK_BUFFER (spec_buffer, 2); | |
e576cab4 JB |
332 | CHECK_BUFFER (buffer, 2); |
333 | } | |
334 | } | |
335 | else | |
336 | buffer = Qnil; | |
80856e74 | 337 | |
58616e67 JB |
338 | /* Make sure that the child will be able to chdir to the current |
339 | buffer's current directory, or its unhandled equivalent. We | |
340 | can't just have the child check for an error when it does the | |
341 | chdir, since it's in a vfork. | |
342 | ||
343 | We have to GCPRO around this because Fexpand_file_name, | |
344 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
345 | might call a file name handling function. The argument list is | |
346 | protected by the caller, so all we really have to worry about is | |
347 | buffer. */ | |
348 | { | |
349 | struct gcpro gcpro1, gcpro2, gcpro3; | |
350 | ||
351 | current_dir = current_buffer->directory; | |
352 | ||
353 | GCPRO3 (infile, buffer, current_dir); | |
354 | ||
c52b0b34 KH |
355 | current_dir |
356 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
357 | Qnil); | |
58616e67 JB |
358 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
359 | report_file_error ("Setting current directory", | |
360 | Fcons (current_buffer->directory, Qnil)); | |
361 | ||
362 | UNGCPRO; | |
363 | } | |
364 | ||
e576cab4 | 365 | display = nargs >= 4 ? args[3] : Qnil; |
80856e74 | 366 | |
68c45bf0 | 367 | filefd = emacs_open (XSTRING (infile)->data, O_RDONLY, 0); |
80856e74 JB |
368 | if (filefd < 0) |
369 | { | |
e576cab4 | 370 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
371 | } |
372 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
373 | { |
374 | struct gcpro gcpro1; | |
375 | ||
376 | GCPRO1 (current_dir); | |
377 | openp (Vexec_path, args[0], EXEC_SUFFIXES, &path, 1); | |
378 | UNGCPRO; | |
379 | } | |
012c6fcb | 380 | if (NILP (path)) |
80856e74 | 381 | { |
68c45bf0 | 382 | emacs_close (filefd); |
80856e74 JB |
383 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
384 | } | |
385 | new_argv[0] = XSTRING (path)->data; | |
c364e618 KH |
386 | if (nargs > 4) |
387 | { | |
388 | register int i; | |
c5bfa12b | 389 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 390 | |
c5bfa12b KH |
391 | GCPRO3 (infile, buffer, current_dir); |
392 | argument_coding.dst_multibyte = 0; | |
393 | for (i = 4; i < nargs; i++) | |
c364e618 | 394 | { |
c5bfa12b KH |
395 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
396 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
c364e618 | 397 | { |
c5bfa12b KH |
398 | /* We must encode this argument. */ |
399 | args[i] = encode_coding_string (args[i], &argument_coding, 1); | |
400 | if (argument_coding.type == coding_type_ccl) | |
401 | setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil); | |
c364e618 | 402 | } |
c5bfa12b | 403 | new_argv[i - 3] = XSTRING (args[i])->data; |
c364e618 | 404 | } |
c5bfa12b | 405 | UNGCPRO; |
db54baaa | 406 | new_argv[nargs - 3] = 0; |
c364e618 | 407 | } |
db54baaa KH |
408 | else |
409 | new_argv[1] = 0; | |
80856e74 | 410 | |
7e6c2178 | 411 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 412 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
413 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
414 | else | |
415 | { | |
416 | tempfile = alloca (20); | |
417 | *tempfile = '\0'; | |
418 | } | |
419 | dostounix_filename (tempfile); | |
420 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') | |
421 | strcat (tempfile, "/"); | |
422 | strcat (tempfile, "detmp.XXX"); | |
423 | mktemp (tempfile); | |
424 | ||
425 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
426 | if (outfilefd < 0) | |
427 | { | |
68c45bf0 | 428 | emacs_close (filefd); |
6f89d28a MB |
429 | report_file_error ("Opening process output file", |
430 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 431 | } |
6f89d28a | 432 | fd[0] = filefd; |
2610078a | 433 | fd[1] = outfilefd; |
6f89d28a | 434 | #endif /* MSDOS */ |
7e6c2178 | 435 | |
052062e0 RS |
436 | #ifdef macintosh |
437 | /* Since we don't have pipes on the Mac, create a temporary file to | |
438 | hold the output of the subprocess. */ | |
439 | tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
440 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, | |
441 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
442 | ||
443 | mktemp (tempfile); | |
444 | ||
445 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
446 | if (outfilefd < 0) | |
447 | { | |
448 | close (filefd); | |
449 | report_file_error ("Opening process output file", | |
450 | Fcons (build_string (tempfile), Qnil)); | |
451 | } | |
452 | fd[0] = filefd; | |
453 | fd[1] = outfilefd; | |
454 | #endif /* macintosh */ | |
455 | ||
d50d3dc8 | 456 | if (INTEGERP (buffer)) |
68c45bf0 | 457 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
458 | else |
459 | { | |
7e6c2178 | 460 | #ifndef MSDOS |
052062e0 | 461 | #ifndef macintosh |
80856e74 | 462 | pipe (fd); |
7e6c2178 | 463 | #endif |
052062e0 | 464 | #endif |
80856e74 JB |
465 | #if 0 |
466 | /* Replaced by close_process_descs */ | |
467 | set_exclusive_use (fd[0]); | |
468 | #endif | |
469 | } | |
470 | ||
471 | { | |
472 | /* child_setup must clobber environ in systems with true vfork. | |
473 | Protect it from permanent change. */ | |
474 | register char **save_environ = environ; | |
475 | register int fd1 = fd[1]; | |
39eaa782 | 476 | int fd_error = fd1; |
80856e74 JB |
477 | |
478 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 479 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
480 | #endif |
481 | ||
482 | /* Record that we're about to create a synchronous process. */ | |
483 | synch_process_alive = 1; | |
484 | ||
5c03767e RS |
485 | /* These vars record information from process termination. |
486 | Clear them now before process can possibly terminate, | |
487 | to avoid timing error if process terminates soon. */ | |
488 | synch_process_death = 0; | |
489 | synch_process_retcode = 0; | |
490 | ||
39eaa782 | 491 | if (NILP (error_file)) |
68c45bf0 | 492 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
493 | else if (STRINGP (error_file)) |
494 | { | |
495 | #ifdef DOS_NT | |
68c45bf0 PE |
496 | fd_error = emacs_open (XSTRING (error_file)->data, |
497 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
498 | S_IREAD | S_IWRITE); | |
39eaa782 RS |
499 | #else /* not DOS_NT */ |
500 | fd_error = creat (XSTRING (error_file)->data, 0666); | |
501 | #endif /* not DOS_NT */ | |
502 | } | |
503 | ||
504 | if (fd_error < 0) | |
505 | { | |
68c45bf0 | 506 | emacs_close (filefd); |
6f89d28a | 507 | if (fd[0] != filefd) |
68c45bf0 | 508 | emacs_close (fd[0]); |
39eaa782 | 509 | if (fd1 >= 0) |
68c45bf0 | 510 | emacs_close (fd1); |
6f89d28a MB |
511 | #ifdef MSDOS |
512 | unlink (tempfile); | |
513 | #endif | |
514 | report_file_error ("Cannot redirect stderr", | |
515 | Fcons ((NILP (error_file) | |
516 | ? build_string (NULL_DEVICE) : error_file), | |
517 | Qnil)); | |
39eaa782 | 518 | } |
89e1ec1d | 519 | |
8d024345 | 520 | current_dir = ENCODE_FILE (current_dir); |
89e1ec1d | 521 | |
052062e0 RS |
522 | #ifdef macintosh |
523 | { | |
524 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
525 | a child_setup as for MSDOS and other platforms. Note that this | |
526 | code does not handle passing the environment to the synchronous | |
527 | Mac subprocess. */ | |
528 | char *infn, *outfn, *errfn, *currdn; | |
529 | ||
530 | /* close these files so subprocess can write to them */ | |
531 | close (outfilefd); | |
532 | if (fd_error != outfilefd) | |
533 | close (fd_error); | |
534 | fd1 = -1; /* No harm in closing that one! */ | |
535 | ||
536 | infn = XSTRING (infile)->data; | |
537 | outfn = tempfile; | |
538 | if (NILP (error_file)) | |
539 | errfn = NULL_DEVICE; | |
540 | else if (EQ (Qt, error_file)) | |
541 | errfn = outfn; | |
542 | else | |
543 | errfn = XSTRING (error_file)->data; | |
544 | currdn = XSTRING (current_dir)->data; | |
545 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); | |
546 | ||
547 | /* Record that the synchronous process exited and note its | |
548 | termination status. */ | |
549 | synch_process_alive = 0; | |
550 | synch_process_retcode = pid; | |
551 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 552 | { |
ca9c0567 | 553 | synchronize_system_messages_locale (); |
68c45bf0 PE |
554 | synch_process_death = strerror (errno); |
555 | } | |
052062e0 RS |
556 | |
557 | /* Since CRLF is converted to LF within `decode_coding', we can | |
558 | always open a file with binary mode. */ | |
559 | fd[0] = open (tempfile, O_BINARY); | |
560 | if (fd[0] < 0) | |
561 | { | |
562 | unlink (tempfile); | |
563 | close (filefd); | |
564 | report_file_error ("Cannot re-open temporary file", Qnil); | |
565 | } | |
566 | } | |
567 | #else /* not macintosh */ | |
2610078a | 568 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 569 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
570 | exit status, not its PID, so we assign it to `synch_process_retcode' |
571 | below. */ | |
c17c4250 EZ |
572 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
573 | 0, current_dir); | |
39eaa782 | 574 | |
2610078a KH |
575 | /* Record that the synchronous process exited and note its |
576 | termination status. */ | |
577 | synch_process_alive = 0; | |
578 | synch_process_retcode = pid; | |
579 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 580 | { |
ca9c0567 | 581 | synchronize_system_messages_locale (); |
68c45bf0 PE |
582 | synch_process_death = strerror (errno); |
583 | } | |
2610078a | 584 | |
68c45bf0 | 585 | emacs_close (outfilefd); |
2610078a | 586 | if (fd_error != outfilefd) |
68c45bf0 | 587 | emacs_close (fd_error); |
2610078a | 588 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
589 | /* Since CRLF is converted to LF within `decode_coding', we can |
590 | always open a file with binary mode. */ | |
68c45bf0 | 591 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
592 | if (fd[0] < 0) |
593 | { | |
594 | unlink (tempfile); | |
68c45bf0 | 595 | emacs_close (filefd); |
2610078a KH |
596 | report_file_error ("Cannot re-open temporary file", Qnil); |
597 | } | |
598 | #else /* not MSDOS */ | |
bad95d8f | 599 | #ifdef WINDOWSNT |
2d607244 RS |
600 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
601 | 0, current_dir); | |
bad95d8f | 602 | #else /* not WINDOWSNT */ |
80856e74 JB |
603 | pid = vfork (); |
604 | ||
605 | if (pid == 0) | |
606 | { | |
607 | if (fd[0] >= 0) | |
68c45bf0 | 608 | emacs_close (fd[0]); |
1e7963c7 RS |
609 | #ifdef HAVE_SETSID |
610 | setsid (); | |
611 | #endif | |
612 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
613 | setpgrp (); |
614 | #else | |
615 | setpgrp (pid, pid); | |
616 | #endif /* USG */ | |
2d607244 RS |
617 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
618 | 0, current_dir); | |
80856e74 | 619 | } |
bad95d8f | 620 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
621 | |
622 | /* The MSDOS case did this already. */ | |
623 | if (fd_error >= 0) | |
68c45bf0 | 624 | emacs_close (fd_error); |
2610078a | 625 | #endif /* not MSDOS */ |
052062e0 | 626 | #endif /* not macintosh */ |
80856e74 | 627 | |
80856e74 JB |
628 | environ = save_environ; |
629 | ||
6b6e798b RS |
630 | /* Close most of our fd's, but not fd[0] |
631 | since we will use that to read input from. */ | |
68c45bf0 | 632 | emacs_close (filefd); |
799abb26 | 633 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 634 | emacs_close (fd1); |
80856e74 JB |
635 | } |
636 | ||
637 | if (pid < 0) | |
638 | { | |
6b6e798b | 639 | if (fd[0] >= 0) |
68c45bf0 | 640 | emacs_close (fd[0]); |
80856e74 JB |
641 | report_file_error ("Doing vfork", Qnil); |
642 | } | |
643 | ||
d50d3dc8 | 644 | if (INTEGERP (buffer)) |
80856e74 | 645 | { |
6b6e798b | 646 | if (fd[0] >= 0) |
68c45bf0 | 647 | emacs_close (fd[0]); |
80856e74 | 648 | #ifndef subprocesses |
e576cab4 JB |
649 | /* If Emacs has been built with asynchronous subprocess support, |
650 | we don't need to do this, I think because it will then have | |
651 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
652 | wait_without_blocking (); |
653 | #endif /* subprocesses */ | |
80856e74 JB |
654 | return Qnil; |
655 | } | |
656 | ||
6b6e798b | 657 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
658 | call_process_exited = 0; |
659 | ||
052062e0 | 660 | #if defined(MSDOS) || defined(macintosh) |
7e6c2178 RS |
661 | /* MSDOS needs different cleanup information. */ |
662 | record_unwind_protect (call_process_cleanup, | |
663 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
664 | #else | |
80856e74 JB |
665 | record_unwind_protect (call_process_cleanup, |
666 | Fcons (make_number (fd[0]), make_number (pid))); | |
052062e0 | 667 | #endif /* not MSDOS and not macintosh */ |
80856e74 JB |
668 | |
669 | ||
d50d3dc8 | 670 | if (BUFFERP (buffer)) |
80856e74 JB |
671 | Fset_buffer (buffer); |
672 | ||
09494912 RS |
673 | if (NILP (buffer)) |
674 | { | |
675 | /* If BUFFER is nil, we must read process output once and then | |
676 | discard it, so setup coding system but with nil. */ | |
677 | setup_coding_system (Qnil, &process_coding); | |
678 | } | |
679 | else | |
680 | { | |
681 | Lisp_Object val, *args2; | |
682 | ||
683 | val = Qnil; | |
684 | if (!NILP (Vcoding_system_for_read)) | |
685 | val = Vcoding_system_for_read; | |
686 | else | |
687 | { | |
688 | if (EQ (coding_systems, Qt)) | |
689 | { | |
690 | int i; | |
691 | ||
692 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
693 | args2[0] = Qcall_process; | |
694 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
695 | coding_systems | |
696 | = Ffind_operation_coding_system (nargs + 1, args2); | |
697 | } | |
698 | if (CONSP (coding_systems)) | |
70949dac | 699 | val = XCAR (coding_systems); |
09494912 | 700 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 701 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
702 | else |
703 | val = Qnil; | |
704 | } | |
705 | setup_coding_system (Fcheck_coding_system (val), &process_coding); | |
706 | /* In unibyte mode, character code conversion should not take | |
707 | place but EOL conversion should. So, setup raw-text or one | |
708 | of the subsidiary according to the information just setup. */ | |
709 | if (NILP (current_buffer->enable_multibyte_characters) | |
710 | && !NILP (val)) | |
711 | setup_raw_text_coding_system (&process_coding); | |
712 | } | |
c5bfa12b KH |
713 | process_coding.src_multibyte = 0; |
714 | process_coding.dst_multibyte | |
715 | = (BUFFERP (buffer) | |
716 | ? ! NILP (XBUFFER (buffer)->enable_multibyte_characters) | |
717 | : ! NILP (current_buffer->enable_multibyte_characters)); | |
09494912 | 718 | |
80856e74 JB |
719 | immediate_quit = 1; |
720 | QUIT; | |
721 | ||
722 | { | |
723 | register int nread; | |
0ad477db | 724 | int first = 1; |
6e3bfbb2 | 725 | int total_read = 0; |
321fecde | 726 | int carryover = 0; |
7a7ab107 | 727 | int display_on_the_fly = !NILP (display) && INTERACTIVE; |
05b44e90 KH |
728 | struct coding_system saved_coding; |
729 | ||
730 | saved_coding = process_coding; | |
f0b950cf KH |
731 | if (process_coding.composing != COMPOSITION_DISABLED) |
732 | coding_allocate_composition_data (&process_coding, PT); | |
60558b19 | 733 | while (1) |
80856e74 | 734 | { |
60558b19 RS |
735 | /* Repeatedly read until we've filled as much as possible |
736 | of the buffer size we have. But don't read | |
8e6208c5 | 737 | less than 1024--save that for the next bufferful. */ |
321fecde | 738 | nread = carryover; |
60558b19 | 739 | while (nread < bufsize - 1024) |
00fb3e95 | 740 | { |
68c45bf0 PE |
741 | int this_read = emacs_read (fd[0], bufptr + nread, |
742 | bufsize - nread); | |
60558b19 RS |
743 | |
744 | if (this_read < 0) | |
745 | goto give_up; | |
746 | ||
747 | if (this_read == 0) | |
7a7ab107 KH |
748 | { |
749 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
750 | break; | |
751 | } | |
60558b19 RS |
752 | |
753 | nread += this_read; | |
7a7ab107 | 754 | total_read += this_read; |
60558b19 | 755 | |
7a7ab107 KH |
756 | if (display_on_the_fly) |
757 | break; | |
758 | } | |
60558b19 RS |
759 | |
760 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 761 | immediate_quit = 0; |
6e3bfbb2 | 762 | |
012c6fcb | 763 | if (!NILP (buffer)) |
32d08644 | 764 | { |
c5bfa12b KH |
765 | if (! CODING_MAY_REQUIRE_DECODING (&process_coding)) |
766 | insert_1_both (bufptr, nread, nread, 0, 1, 0); | |
32d08644 KH |
767 | else |
768 | { /* We have to decode the input. */ | |
f0b950cf KH |
769 | int size; |
770 | char *decoding_buf; | |
32d08644 | 771 | |
f0b950cf KH |
772 | repeat_decoding: |
773 | size = decoding_buffer_size (&process_coding, nread); | |
774 | decoding_buf = (char *) xmalloc (size); | |
2d892150 KH |
775 | if (process_coding.cmp_data) |
776 | process_coding.cmp_data->char_offset = PT; | |
321fecde KH |
777 | decode_coding (&process_coding, bufptr, decoding_buf, |
778 | nread, size); | |
7a7ab107 KH |
779 | if (display_on_the_fly |
780 | && saved_coding.type == coding_type_undecided | |
781 | && process_coding.type != coding_type_undecided) | |
782 | { | |
783 | /* We have detected some coding system. But, | |
784 | there's a possibility that the detection was | |
785 | done by insufficient data. So, we give up | |
786 | displaying on the fly. */ | |
a871dd58 | 787 | xfree (decoding_buf); |
7a7ab107 KH |
788 | display_on_the_fly = 0; |
789 | process_coding = saved_coding; | |
790 | carryover = nread; | |
791 | continue; | |
792 | } | |
321fecde | 793 | if (process_coding.produced > 0) |
2d892150 KH |
794 | insert_1_both (decoding_buf, process_coding.produced_char, |
795 | process_coding.produced, 0, 1, 0); | |
a871dd58 | 796 | xfree (decoding_buf); |
f0b950cf KH |
797 | nread -= process_coding.consumed; |
798 | carryover = nread; | |
321fecde | 799 | if (carryover > 0) |
c5bfa12b KH |
800 | /* As CARRYOVER should not be that large, we had |
801 | better avoid overhead of bcopy. */ | |
802 | BCOPY_SHORT (bufptr + process_coding.consumed, bufptr, | |
803 | carryover); | |
f0b950cf KH |
804 | if (process_coding.result == CODING_FINISH_INSUFFICIENT_CMP) |
805 | { | |
806 | /* The decoding ended because of insufficient data | |
807 | area to record information about composition. | |
808 | We must try decoding with additional data area | |
2d892150 | 809 | before reading more output for the process. */ |
f0b950cf KH |
810 | coding_allocate_composition_data (&process_coding, PT); |
811 | goto repeat_decoding; | |
812 | } | |
32d08644 KH |
813 | } |
814 | } | |
c5bfa12b | 815 | |
321fecde | 816 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 817 | break; |
6e3bfbb2 RS |
818 | |
819 | /* Make the buffer bigger as we continue to read more data, | |
820 | but not past 64k. */ | |
821 | if (bufsize < 64 * 1024 && total_read > 32 * bufsize) | |
822 | { | |
823 | bufsize *= 2; | |
824 | bufptr = (char *) alloca (bufsize); | |
825 | } | |
826 | ||
012c6fcb | 827 | if (!NILP (display) && INTERACTIVE) |
0ad477db RS |
828 | { |
829 | if (first) | |
830 | prepare_menu_bars (); | |
831 | first = 0; | |
832 | redisplay_preserve_echo_area (); | |
833 | } | |
80856e74 JB |
834 | immediate_quit = 1; |
835 | QUIT; | |
836 | } | |
60558b19 | 837 | give_up: ; |
80856e74 | 838 | |
2d892150 KH |
839 | if (!NILP (buffer) |
840 | && process_coding.cmp_data) | |
841 | { | |
842 | coding_restore_composition (&process_coding, Fcurrent_buffer ()); | |
843 | coding_free_composition_data (&process_coding); | |
844 | } | |
f0b950cf | 845 | |
bca78757 | 846 | Vlast_coding_system_used = process_coding.symbol; |
bbd29cfe | 847 | |
bca78757 KH |
848 | /* If the caller required, let the buffer inherit the |
849 | coding-system used to decode the process output. */ | |
850 | if (inherit_process_coding_system) | |
851 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
852 | make_number (total_read)); | |
3b440bb5 EZ |
853 | } |
854 | ||
80856e74 JB |
855 | /* Wait for it to terminate, unless it already has. */ |
856 | wait_for_termination (pid); | |
857 | ||
858 | immediate_quit = 0; | |
859 | ||
860 | set_buffer_internal (old); | |
861 | ||
37d54121 RS |
862 | /* Don't kill any children that the subprocess may have left behind |
863 | when exiting. */ | |
864 | call_process_exited = 1; | |
865 | ||
80856e74 JB |
866 | unbind_to (count, Qnil); |
867 | ||
80856e74 | 868 | if (synch_process_death) |
68c45bf0 PE |
869 | return code_convert_string_norecord (build_string (synch_process_death), |
870 | Vlocale_coding_system, 0); | |
80856e74 JB |
871 | return make_number (synch_process_retcode); |
872 | } | |
873 | #endif | |
874 | \f | |
9fefd2ba | 875 | static Lisp_Object |
80856e74 JB |
876 | delete_temp_file (name) |
877 | Lisp_Object name; | |
878 | { | |
2e3dc201 | 879 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 880 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 881 | internal_delete_file (name); |
80856e74 JB |
882 | } |
883 | ||
884 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
885 | 3, MANY, 0, | |
886 | "Send text from START to END to a synchronous process running PROGRAM.\n\ | |
edf496dd | 887 | The remaining arguments are optional.\n\ |
80856e74 | 888 | Delete the text if fourth arg DELETE is non-nil.\n\ |
39eaa782 | 889 | \n\ |
80856e74 JB |
890 | Insert output in BUFFER before point; t means current buffer;\n\ |
891 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
892 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
893 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
894 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
895 | STDERR-FILE may be nil (discard standard error output),\n\ | |
896 | t (mix it with ordinary output), or a file name string.\n\ | |
897 | \n\ | |
80856e74 JB |
898 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
899 | Remaining args are passed to PROGRAM at startup as command args.\n\ | |
39eaa782 RS |
900 | \n\ |
901 | If BUFFER is nil, `call-process-region' returns immediately with value nil.\n\ | |
902 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 903 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 904 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
905 | (nargs, args) |
906 | int nargs; | |
907 | register Lisp_Object *args; | |
908 | { | |
39323a7e KH |
909 | struct gcpro gcpro1; |
910 | Lisp_Object filename_string; | |
911 | register Lisp_Object start, end; | |
d3e81d0a | 912 | int count = specpdl_ptr - specpdl; |
08ee4e87 | 913 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 914 | Lisp_Object coding_systems; |
32d08644 KH |
915 | Lisp_Object val, *args2; |
916 | int i; | |
bad95d8f | 917 | #ifdef DOS_NT |
7e6c2178 | 918 | char *tempfile; |
7e6c2178 RS |
919 | char *outf = '\0'; |
920 | ||
8a52365c EZ |
921 | if ((outf = egetenv ("TMPDIR")) |
922 | || (outf = egetenv ("TMP")) | |
923 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
924 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
925 | else | |
926 | { | |
927 | tempfile = alloca (20); | |
928 | *tempfile = '\0'; | |
929 | } | |
0774fcf8 | 930 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 931 | strcat (tempfile, "/"); |
5711b547 RS |
932 | if ('/' == DIRECTORY_SEP) |
933 | dostounix_filename (tempfile); | |
934 | else | |
935 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
936 | #ifdef WINDOWSNT |
937 | strcat (tempfile, "emXXXXXX"); | |
938 | #else | |
7e6c2178 | 939 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 940 | #endif |
bad95d8f | 941 | #else /* not DOS_NT */ |
fc932ac6 | 942 | char *tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
8abd035b | 943 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, |
fc932ac6 | 944 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
bad95d8f | 945 | #endif /* not DOS_NT */ |
7e6c2178 | 946 | |
09494912 RS |
947 | coding_systems = Qt; |
948 | ||
80856e74 JB |
949 | mktemp (tempfile); |
950 | ||
951 | filename_string = build_string (tempfile); | |
39323a7e | 952 | GCPRO1 (filename_string); |
80856e74 JB |
953 | start = args[0]; |
954 | end = args[1]; | |
32d08644 | 955 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
956 | if (!NILP (Vcoding_system_for_write)) |
957 | val = Vcoding_system_for_write; | |
958 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
959 | val = Qnil; |
960 | else | |
beacaab3 | 961 | { |
91489411 RS |
962 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
963 | args2[0] = Qcall_process_region; | |
964 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
965 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
966 | if (CONSP (coding_systems)) | |
70949dac | 967 | val = XCDR (coding_systems); |
91489411 | 968 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 969 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 970 | else |
91489411 | 971 | val = Qnil; |
beacaab3 | 972 | } |
32d08644 | 973 | |
168afdaa RS |
974 | { |
975 | int count1 = specpdl_ptr - specpdl; | |
976 | ||
977 | specbind (intern ("coding-system-for-write"), val); | |
978 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); | |
979 | ||
980 | unbind_to (count1, Qnil); | |
981 | } | |
91489411 RS |
982 | |
983 | /* Note that Fcall_process takes care of binding | |
984 | coding-system-for-read. */ | |
093650fe | 985 | |
80856e74 JB |
986 | record_unwind_protect (delete_temp_file, filename_string); |
987 | ||
edf496dd | 988 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
989 | Fdelete_region (start, end); |
990 | ||
edf496dd KH |
991 | if (nargs > 3) |
992 | { | |
993 | args += 2; | |
994 | nargs -= 2; | |
995 | } | |
996 | else | |
997 | { | |
998 | args[0] = args[2]; | |
999 | nargs = 2; | |
1000 | } | |
1001 | args[1] = filename_string; | |
80856e74 | 1002 | |
edf496dd | 1003 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
1004 | } |
1005 | \f | |
1006 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
1007 | ||
dfcf069d AS |
1008 | static int relocate_fd (); |
1009 | ||
80856e74 JB |
1010 | /* This is the last thing run in a newly forked inferior |
1011 | either synchronous or asynchronous. | |
1012 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1013 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1014 | then exec another program based on new_argv. | |
1015 | ||
1016 | This function may change environ for the superior process. | |
1017 | Therefore, the superior process must save and restore the value | |
1018 | of environ around the vfork and the call to this function. | |
1019 | ||
80856e74 | 1020 | SET_PGRP is nonzero if we should put the subprocess into a separate |
e576cab4 JB |
1021 | process group. |
1022 | ||
1023 | CURRENT_DIR is an elisp string giving the path of the current | |
1024 | directory the subprocess should have. Since we can't really signal | |
1025 | a decent error from within the child, this should be verified as an | |
1026 | executable directory by the parent. */ | |
80856e74 | 1027 | |
dfcf069d | 1028 | int |
e576cab4 | 1029 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1030 | int in, out, err; |
1031 | register char **new_argv; | |
80856e74 | 1032 | int set_pgrp; |
e576cab4 | 1033 | Lisp_Object current_dir; |
80856e74 | 1034 | { |
e576cab4 | 1035 | char **env; |
7fcf7f05 | 1036 | char *pwd_var; |
bad95d8f RS |
1037 | #ifdef WINDOWSNT |
1038 | int cpid; | |
4252a4bd | 1039 | HANDLE handles[3]; |
bad95d8f | 1040 | #endif /* WINDOWSNT */ |
e576cab4 | 1041 | |
33abe2d9 | 1042 | int pid = getpid (); |
80856e74 | 1043 | |
68d10241 | 1044 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 JB |
1045 | { |
1046 | extern int emacs_priority; | |
1047 | ||
68d10241 RS |
1048 | if (emacs_priority < 0) |
1049 | nice (- emacs_priority); | |
4f0b9d49 | 1050 | } |
5b633aeb | 1051 | #endif |
80856e74 JB |
1052 | |
1053 | #ifdef subprocesses | |
1054 | /* Close Emacs's descriptors that this process should not have. */ | |
1055 | close_process_descs (); | |
1056 | #endif | |
c17c4250 EZ |
1057 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1058 | we will lose if we call close_load_descs here. */ | |
1059 | #ifndef DOS_NT | |
4458cebe | 1060 | close_load_descs (); |
c17c4250 | 1061 | #endif |
80856e74 JB |
1062 | |
1063 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1064 | that do not have true vfork or that have true (stack) alloca. | |
1065 | If using vfork and C_ALLOCA it is safe because that changes | |
1066 | the superior's static variables as if the superior had done alloca | |
1067 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1068 | { |
7fcf7f05 | 1069 | register char *temp; |
e576cab4 | 1070 | register int i; |
77d78be1 | 1071 | |
fc932ac6 | 1072 | i = STRING_BYTES (XSTRING (current_dir)); |
7fcf7f05 RS |
1073 | pwd_var = (char *) alloca (i + 6); |
1074 | temp = pwd_var + 4; | |
1075 | bcopy ("PWD=", pwd_var, 4); | |
e576cab4 | 1076 | bcopy (XSTRING (current_dir)->data, temp, i); |
bad95d8f | 1077 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1078 | temp[i] = 0; |
1079 | ||
c17c4250 | 1080 | #ifndef DOS_NT |
e576cab4 JB |
1081 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1082 | the callers check the current directory before forking, this | |
1083 | should only return an error if the directory's permissions | |
1084 | are changed between the check and this chdir, but we should | |
1085 | at least check. */ | |
1086 | if (chdir (temp) < 0) | |
20b25e46 | 1087 | _exit (errno); |
b4c7684c | 1088 | #endif |
7fcf7f05 | 1089 | |
c17c4250 EZ |
1090 | #ifdef DOS_NT |
1091 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1092 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1093 | { | |
1094 | temp += 2; | |
1095 | i -= 2; | |
1096 | } | |
1097 | #endif | |
1098 | ||
7fcf7f05 | 1099 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1100 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1101 | temp[--i] = 0; |
e576cab4 | 1102 | } |
80856e74 | 1103 | |
80856e74 JB |
1104 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1105 | { | |
1106 | register Lisp_Object tem; | |
1107 | register char **new_env; | |
1108 | register int new_length; | |
1109 | ||
1110 | new_length = 0; | |
1111 | for (tem = Vprocess_environment; | |
70949dac KR |
1112 | CONSP (tem) && STRINGP (XCAR (tem)); |
1113 | tem = XCDR (tem)) | |
80856e74 JB |
1114 | new_length++; |
1115 | ||
7fcf7f05 RS |
1116 | /* new_length + 2 to include PWD and terminating 0. */ |
1117 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1118 | ||
1119 | /* If we have a PWD envvar, pass one down, | |
1120 | but with corrected value. */ | |
1121 | if (getenv ("PWD")) | |
1122 | *new_env++ = pwd_var; | |
80856e74 | 1123 | |
cd9565ba | 1124 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1125 | for (tem = Vprocess_environment; |
70949dac KR |
1126 | CONSP (tem) && STRINGP (XCAR (tem)); |
1127 | tem = XCDR (tem)) | |
cd9565ba RS |
1128 | { |
1129 | char **ep = env; | |
70949dac | 1130 | char *string = (char *) XSTRING (XCAR (tem))->data; |
cd9565ba RS |
1131 | /* See if this string duplicates any string already in the env. |
1132 | If so, don't put it in. | |
1133 | When an env var has multiple definitions, | |
1134 | we keep the definition that comes first in process-environment. */ | |
1135 | for (; ep != new_env; ep++) | |
1136 | { | |
1137 | char *p = *ep, *q = string; | |
1138 | while (1) | |
1139 | { | |
1140 | if (*q == 0) | |
1141 | /* The string is malformed; might as well drop it. */ | |
1142 | goto duplicate; | |
1143 | if (*q != *p) | |
1144 | break; | |
1145 | if (*q == '=') | |
1146 | goto duplicate; | |
1147 | p++, q++; | |
1148 | } | |
1149 | } | |
1150 | *new_env++ = string; | |
1151 | duplicate: ; | |
1152 | } | |
80856e74 JB |
1153 | *new_env = 0; |
1154 | } | |
bad95d8f RS |
1155 | #ifdef WINDOWSNT |
1156 | prepare_standard_handles (in, out, err, handles); | |
b4c7684c | 1157 | set_process_dir (XSTRING (current_dir)->data); |
bad95d8f | 1158 | #else /* not WINDOWSNT */ |
426b37ae JB |
1159 | /* Make sure that in, out, and err are not actually already in |
1160 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1161 | started with its standard in, out, or error closed, as might |
426b37ae | 1162 | happen under X. */ |
f29f9e4a RS |
1163 | { |
1164 | int oin = in, oout = out; | |
1165 | ||
1166 | /* We have to avoid relocating the same descriptor twice! */ | |
1167 | ||
1168 | in = relocate_fd (in, 3); | |
1169 | ||
1170 | if (out == oin) | |
1171 | out = in; | |
1172 | else | |
3e9367e7 | 1173 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1174 | |
1175 | if (err == oin) | |
1176 | err = in; | |
1177 | else if (err == oout) | |
1178 | err = out; | |
1179 | else | |
3e9367e7 | 1180 | err = relocate_fd (err, 3); |
f29f9e4a | 1181 | } |
426b37ae | 1182 | |
c17c4250 | 1183 | #ifndef MSDOS |
68c45bf0 PE |
1184 | emacs_close (0); |
1185 | emacs_close (1); | |
1186 | emacs_close (2); | |
80856e74 JB |
1187 | |
1188 | dup2 (in, 0); | |
1189 | dup2 (out, 1); | |
1190 | dup2 (err, 2); | |
68c45bf0 PE |
1191 | emacs_close (in); |
1192 | emacs_close (out); | |
1193 | emacs_close (err); | |
c17c4250 | 1194 | #endif /* not MSDOS */ |
bad95d8f | 1195 | #endif /* not WINDOWSNT */ |
80856e74 | 1196 | |
6b2cd868 | 1197 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1198 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1199 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1200 | #endif |
e576cab4 JB |
1201 | #else |
1202 | setpgrp (pid, pid); | |
1203 | #endif /* USG */ | |
a129418f RS |
1204 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1205 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 JB |
1206 | |
1207 | #ifdef vipc | |
1208 | something missing here; | |
1209 | #endif /* vipc */ | |
1210 | ||
c17c4250 EZ |
1211 | #ifdef MSDOS |
1212 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
1213 | if (pid == -1) | |
1214 | /* An error occurred while trying to run the subprocess. */ | |
1215 | report_file_error ("Spawning child process", Qnil); | |
1216 | return pid; | |
1217 | #else /* not MSDOS */ | |
bad95d8f RS |
1218 | #ifdef WINDOWSNT |
1219 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1220 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1221 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1222 | if (cpid == -1) |
1223 | /* An error occurred while trying to spawn the process. */ | |
1224 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1225 | return cpid; |
1226 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1227 | /* execvp does not accept an environment arg so the only way |
1228 | to pass this environment is to set environ. Our caller | |
1229 | is responsible for restoring the ambient value of environ. */ | |
1230 | environ = env; | |
1231 | execvp (new_argv[0], new_argv); | |
1232 | ||
68c45bf0 PE |
1233 | emacs_write (1, "Can't exec program: ", 20); |
1234 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1235 | emacs_write (1, "\n", 1); | |
80856e74 | 1236 | _exit (1); |
bad95d8f | 1237 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1238 | #endif /* not MSDOS */ |
80856e74 JB |
1239 | } |
1240 | ||
a3833dfe | 1241 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1242 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1243 | static int |
a3833dfe KH |
1244 | relocate_fd (fd, minfd) |
1245 | int fd, minfd; | |
426b37ae | 1246 | { |
a3833dfe | 1247 | if (fd >= minfd) |
426b37ae JB |
1248 | return fd; |
1249 | else | |
1250 | { | |
1251 | int new = dup (fd); | |
1252 | if (new == -1) | |
1253 | { | |
20c018a0 | 1254 | char *message1 = "Error while setting up child: "; |
826c56ac | 1255 | char *errmessage = strerror (errno); |
20c018a0 | 1256 | char *message2 = "\n"; |
68c45bf0 PE |
1257 | emacs_write (2, message1, strlen (message1)); |
1258 | emacs_write (2, errmessage, strlen (errmessage)); | |
1259 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1260 | _exit (1); |
1261 | } | |
1262 | /* Note that we hold the original FD open while we recurse, | |
1263 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1264 | new = relocate_fd (new, minfd); |
68c45bf0 | 1265 | emacs_close (fd); |
426b37ae JB |
1266 | return new; |
1267 | } | |
1268 | } | |
1269 | ||
012c6fcb JA |
1270 | static int |
1271 | getenv_internal (var, varlen, value, valuelen) | |
1272 | char *var; | |
1273 | int varlen; | |
1274 | char **value; | |
1275 | int *valuelen; | |
1276 | { | |
1277 | Lisp_Object scan; | |
1278 | ||
70949dac | 1279 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1280 | { |
c1350752 KH |
1281 | Lisp_Object entry; |
1282 | ||
70949dac | 1283 | entry = XCAR (scan); |
d50d3dc8 | 1284 | if (STRINGP (entry) |
fc932ac6 | 1285 | && STRING_BYTES (XSTRING (entry)) > varlen |
012c6fcb | 1286 | && XSTRING (entry)->data[varlen] == '=' |
bad95d8f RS |
1287 | #ifdef WINDOWSNT |
1288 | /* NT environment variables are case insensitive. */ | |
a9971c6d | 1289 | && ! strnicmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1290 | #else /* not WINDOWSNT */ |
a9971c6d | 1291 | && ! bcmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1292 | #endif /* not WINDOWSNT */ |
a9971c6d | 1293 | ) |
012c6fcb JA |
1294 | { |
1295 | *value = (char *) XSTRING (entry)->data + (varlen + 1); | |
fc932ac6 | 1296 | *valuelen = STRING_BYTES (XSTRING (entry)) - (varlen + 1); |
012c6fcb JA |
1297 | return 1; |
1298 | } | |
1299 | } | |
1300 | ||
1301 | return 0; | |
1302 | } | |
1303 | ||
83fa009c | 1304 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0, |
012c6fcb JA |
1305 | "Return the value of environment variable VAR, as a string.\n\ |
1306 | VAR should be a string. Value is nil if VAR is undefined in the environment.\n\ | |
1307 | This function consults the variable ``process-environment'' for its value.") | |
1308 | (var) | |
1309 | Lisp_Object var; | |
1310 | { | |
1311 | char *value; | |
1312 | int valuelen; | |
1313 | ||
1314 | CHECK_STRING (var, 0); | |
fc932ac6 | 1315 | if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)), |
012c6fcb JA |
1316 | &value, &valuelen)) |
1317 | return make_string (value, valuelen); | |
1318 | else | |
1319 | return Qnil; | |
1320 | } | |
1321 | ||
1322 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1323 | callable from C. */ |
012c6fcb JA |
1324 | char * |
1325 | egetenv (var) | |
e576cab4 | 1326 | char *var; |
012c6fcb JA |
1327 | { |
1328 | char *value; | |
1329 | int valuelen; | |
1330 | ||
1331 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1332 | return value; | |
1333 | else | |
1334 | return 0; | |
1335 | } | |
1336 | ||
80856e74 JB |
1337 | #endif /* not VMS */ |
1338 | \f | |
8de15d69 | 1339 | /* This is run before init_cmdargs. */ |
7e6c2178 | 1340 | |
dfcf069d | 1341 | void |
8de15d69 RS |
1342 | init_callproc_1 () |
1343 | { | |
1344 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1345 | char *doc_dir = egetenv ("EMACSDOC"); |
1346 | ||
8de15d69 | 1347 | Vdata_directory |
7e6c2178 | 1348 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1349 | : PATH_DATA)); |
35a2f4b8 KH |
1350 | Vdoc_directory |
1351 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1352 | : PATH_DOC)); | |
9453ea7b | 1353 | |
e576cab4 | 1354 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1355 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1356 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1357 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1358 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1359 | } |
1360 | ||
e17f7533 | 1361 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1362 | |
dfcf069d | 1363 | void |
8de15d69 RS |
1364 | init_callproc () |
1365 | { | |
1366 | char *data_dir = egetenv ("EMACSDATA"); | |
1367 | ||
1368 | register char * sh; | |
1369 | Lisp_Object tempdir; | |
1370 | ||
9cc4fad5 | 1371 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1372 | { |
05630743 RS |
1373 | /* Add to the path the lib-src subdir of the installation dir. */ |
1374 | Lisp_Object tem; | |
1375 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1376 | Vinstallation_directory); | |
bad95d8f | 1377 | #ifndef DOS_NT |
1a6640ec | 1378 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc RS |
1379 | if (NILP (Fmember (tem, Vexec_path))) |
1380 | Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil)); | |
1381 | ||
1382 | Vexec_directory = Ffile_name_as_directory (tem); | |
bad95d8f | 1383 | #endif /* not DOS_NT */ |
8de15d69 | 1384 | |
e17f7533 RS |
1385 | /* Maybe use ../etc as well as ../lib-src. */ |
1386 | if (data_dir == 0) | |
1387 | { | |
1388 | tem = Fexpand_file_name (build_string ("etc"), | |
1389 | Vinstallation_directory); | |
1390 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1391 | } |
1392 | } | |
7e933683 RS |
1393 | |
1394 | /* Look for the files that should be in etc. We don't use | |
1395 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1396 | near the executable, and they are never in the build |
7e933683 RS |
1397 | directory when that's different from the source directory. |
1398 | ||
1399 | Instead, if these files are not in the nominal place, we try the | |
1400 | source directory. */ | |
1401 | if (data_dir == 0) | |
1402 | { | |
1403 | Lisp_Object tem, tem1, newdir; | |
1404 | ||
1405 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); | |
1406 | tem1 = Ffile_exists_p (tem); | |
1407 | if (NILP (tem1)) | |
1408 | { | |
1409 | newdir = Fexpand_file_name (build_string ("../etc/"), | |
1410 | build_string (PATH_DUMPLOADSEARCH)); | |
1411 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1412 | tem1 = Ffile_exists_p (tem); | |
1413 | if (!NILP (tem1)) | |
1414 | Vdata_directory = newdir; | |
1415 | } | |
1416 | } | |
80856e74 | 1417 | |
d883eb62 RS |
1418 | #ifndef CANNOT_DUMP |
1419 | if (initialized) | |
1420 | #endif | |
1421 | { | |
1422 | tempdir = Fdirectory_file_name (Vexec_directory); | |
1423 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
1424 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", | |
1425 | Vexec_directory); | |
1426 | } | |
80856e74 | 1427 | |
e576cab4 JB |
1428 | tempdir = Fdirectory_file_name (Vdata_directory); |
1429 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
76d5c6cf RS |
1430 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1431 | Vdata_directory); | |
e576cab4 | 1432 | |
80856e74 JB |
1433 | #ifdef VMS |
1434 | Vshell_file_name = build_string ("*dcl*"); | |
1435 | #else | |
e576cab4 | 1436 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1437 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1438 | #endif | |
8abd035b RS |
1439 | |
1440 | #ifdef VMS | |
1441 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1442 | #else | |
1443 | if (getenv ("TMPDIR")) | |
1444 | { | |
1445 | char *dir = getenv ("TMPDIR"); | |
1446 | Vtemp_file_name_pattern | |
1447 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1448 | build_string (dir)); | |
1449 | } | |
1450 | else | |
1451 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1452 | #endif | |
9fefd2ba JB |
1453 | } |
1454 | ||
dfcf069d | 1455 | void |
9fefd2ba JB |
1456 | set_process_environment () |
1457 | { | |
1458 | register char **envp; | |
80856e74 | 1459 | |
80856e74 JB |
1460 | Vprocess_environment = Qnil; |
1461 | #ifndef CANNOT_DUMP | |
1462 | if (initialized) | |
1463 | #endif | |
1464 | for (envp = environ; *envp; envp++) | |
1465 | Vprocess_environment = Fcons (build_string (*envp), | |
1466 | Vprocess_environment); | |
80856e74 JB |
1467 | } |
1468 | ||
dfcf069d | 1469 | void |
80856e74 JB |
1470 | syms_of_callproc () |
1471 | { | |
bad95d8f | 1472 | #ifdef DOS_NT |
093650fe RS |
1473 | Qbuffer_file_type = intern ("buffer-file-type"); |
1474 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1475 | #endif /* DOS_NT */ |
7e6c2178 | 1476 | |
80856e74 JB |
1477 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
1478 | "*File name to load inferior shells from.\n\ | |
1479 | Initialized from the SHELL environment variable."); | |
1480 | ||
1481 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
1482 | "*List of directories to search programs to run in subprocesses.\n\ | |
1483 | Each element is a string (directory name) or nil (try default directory)."); | |
1484 | ||
1485 | DEFVAR_LISP ("exec-directory", &Vexec_directory, | |
57ca9855 RS |
1486 | "Directory for executables for Emacs to invoke.\n\ |
1487 | More generally, this includes any architecture-dependent files\n\ | |
1488 | that are built and installed from the Emacs distribution."); | |
e576cab4 JB |
1489 | |
1490 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
57ca9855 RS |
1491 | "Directory of machine-independent files that come with GNU Emacs.\n\ |
1492 | These are files intended for Emacs to use while it runs."); | |
80856e74 | 1493 | |
35a2f4b8 KH |
1494 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
1495 | "Directory containing the DOC file that comes with GNU Emacs.\n\ | |
1496 | This is usually the same as data-directory."); | |
1497 | ||
ed61592a JB |
1498 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
1499 | "For internal use by the build procedure only.\n\ | |
1500 | This is the name of the directory in which the build procedure installed\n\ | |
1501 | Emacs's info files; the default value for Info-default-directory-list\n\ | |
1502 | includes this."); | |
1503 | Vconfigure_info_directory = build_string (PATH_INFO); | |
1504 | ||
8abd035b RS |
1505 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
1506 | "Pattern for making names for temporary files.\n\ | |
1507 | This is used by `call-process-region'."); | |
0537ec48 | 1508 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1509 | |
80856e74 | 1510 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
e576cab4 JB |
1511 | "List of environment variables for subprocesses to inherit.\n\ |
1512 | Each element should be a string of the form ENVVARNAME=VALUE.\n\ | |
1513 | The environment which Emacs inherits is placed in this variable\n\ | |
1514 | when Emacs starts."); | |
80856e74 JB |
1515 | |
1516 | #ifndef VMS | |
1517 | defsubr (&Scall_process); | |
83fa009c | 1518 | defsubr (&Sgetenv_internal); |
986ffb24 | 1519 | #endif |
e576cab4 | 1520 | defsubr (&Scall_process_region); |
80856e74 | 1521 | } |