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" |
57bda87a | 78 | #include <epaths.h> |
80856e74 | 79 | #include "process.h" |
d177f194 | 80 | #include "syssignal.h" |
a129418f | 81 | #include "systty.h" |
80856e74 | 82 | |
5f027cea EZ |
83 | #ifdef MSDOS |
84 | #include "msdos.h" | |
85 | #endif | |
86 | ||
80856e74 JB |
87 | #ifdef VMS |
88 | extern noshare char **environ; | |
89 | #else | |
90 | extern char **environ; | |
91 | #endif | |
92 | ||
93 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
94 | ||
35a2f4b8 | 95 | Lisp_Object Vexec_path, Vexec_directory, Vdata_directory, Vdoc_directory; |
ed61592a | 96 | Lisp_Object Vconfigure_info_directory; |
8abd035b | 97 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
98 | |
99 | Lisp_Object Vshell_file_name; | |
100 | ||
80856e74 | 101 | Lisp_Object Vprocess_environment; |
80856e74 | 102 | |
bad95d8f | 103 | #ifdef DOS_NT |
093650fe | 104 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 105 | #endif /* DOS_NT */ |
093650fe | 106 | |
80856e74 JB |
107 | /* True iff we are about to fork off a synchronous process or if we |
108 | are waiting for it. */ | |
109 | int synch_process_alive; | |
110 | ||
111 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
112 | char *synch_process_death; | |
113 | ||
114 | /* If synch_process_death is zero, | |
115 | this is exit code of synchronous subprocess. */ | |
116 | int synch_process_retcode; | |
8de15d69 RS |
117 | |
118 | extern Lisp_Object Vdoc_file_name; | |
89e1ec1d | 119 | |
8d024345 | 120 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
80856e74 | 121 | \f |
37d54121 RS |
122 | /* Clean up when exiting Fcall_process. |
123 | On MSDOS, delete the temporary file on any kind of termination. | |
124 | On Unix, kill the process and any children on termination by signal. */ | |
125 | ||
126 | /* Nonzero if this is termination due to exit. */ | |
127 | static int call_process_exited; | |
128 | ||
80856e74 JB |
129 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
130 | ||
d177f194 JB |
131 | static Lisp_Object |
132 | call_process_kill (fdpid) | |
133 | Lisp_Object fdpid; | |
134 | { | |
68c45bf0 | 135 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
136 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
137 | synch_process_alive = 0; | |
138 | return Qnil; | |
139 | } | |
140 | ||
80856e74 JB |
141 | Lisp_Object |
142 | call_process_cleanup (fdpid) | |
143 | Lisp_Object fdpid; | |
144 | { | |
052062e0 | 145 | #if defined (MSDOS) || defined (macintosh) |
7e6c2178 | 146 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
147 | register Lisp_Object file; |
148 | file = Fcdr (fdpid); | |
68c45bf0 | 149 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 RS |
150 | if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) |
151 | unlink (XSTRING (file)->data); | |
052062e0 | 152 | #else /* not MSDOS and not macintosh */ |
d177f194 JB |
153 | register int pid = XFASTINT (Fcdr (fdpid)); |
154 | ||
37d54121 | 155 | if (call_process_exited) |
6b6e798b | 156 | { |
68c45bf0 | 157 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
158 | return Qnil; |
159 | } | |
37d54121 | 160 | |
d177f194 JB |
161 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
162 | { | |
163 | int count = specpdl_ptr - specpdl; | |
164 | record_unwind_protect (call_process_kill, fdpid); | |
165 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
166 | immediate_quit = 1; | |
167 | QUIT; | |
168 | wait_for_termination (pid); | |
169 | immediate_quit = 0; | |
170 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
171 | message1 ("Waiting for process to die...done"); | |
172 | } | |
80856e74 | 173 | synch_process_alive = 0; |
68c45bf0 | 174 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 175 | #endif /* not MSDOS */ |
80856e74 JB |
176 | return Qnil; |
177 | } | |
178 | ||
179 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
180 | "Call PROGRAM synchronously in separate process.\n\ | |
edf496dd | 181 | The remaining arguments are optional.\n\ |
80856e74 JB |
182 | The program's input comes from file INFILE (nil means `/dev/null').\n\ |
183 | Insert output in BUFFER before point; t means current buffer;\n\ | |
184 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
185 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
186 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
187 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
188 | STDERR-FILE may be nil (discard standard error output),\n\ | |
189 | t (mix it with ordinary output), or a file name string.\n\ | |
190 | \n\ | |
80856e74 JB |
191 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
192 | Remaining arguments are strings passed as command arguments to PROGRAM.\n\ | |
39eaa782 RS |
193 | \n\ |
194 | If BUFFER is 0, `call-process' returns immediately with value nil.\n\ | |
195 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 196 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 197 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
198 | (nargs, args) |
199 | int nargs; | |
200 | register Lisp_Object *args; | |
201 | { | |
58616e67 | 202 | Lisp_Object infile, buffer, current_dir, display, path; |
80856e74 JB |
203 | int fd[2]; |
204 | int filefd; | |
205 | register int pid; | |
6e3bfbb2 RS |
206 | char buf[16384]; |
207 | char *bufptr = buf; | |
208 | int bufsize = 16384; | |
80856e74 | 209 | int count = specpdl_ptr - specpdl; |
2d607244 | 210 | |
80856e74 JB |
211 | register unsigned char **new_argv |
212 | = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
213 | struct buffer *old = current_buffer; | |
39eaa782 RS |
214 | /* File to use for stderr in the child. |
215 | t means use same as standard output. */ | |
216 | Lisp_Object error_file; | |
7e6c2178 RS |
217 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
218 | char *outf, *tempfile; | |
219 | int outfilefd; | |
220 | #endif | |
052062e0 RS |
221 | #ifdef macintosh |
222 | char *tempfile; | |
223 | int outfilefd; | |
224 | #endif | |
80856e74 JB |
225 | #if 0 |
226 | int mask; | |
227 | #endif | |
32d08644 KH |
228 | struct coding_system process_coding; /* coding-system of process output */ |
229 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
230 | /* Set to the return value of Ffind_operation_coding_system. */ |
231 | Lisp_Object coding_systems; | |
232 | ||
233 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
234 | coding_systems = Qt; | |
32d08644 | 235 | |
80856e74 JB |
236 | CHECK_STRING (args[0], 0); |
237 | ||
39eaa782 RS |
238 | error_file = Qt; |
239 | ||
7e6c2178 RS |
240 | #ifndef subprocesses |
241 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
3ffde7d6 | 242 | if (nargs >= 3 |
09ffb8b5 | 243 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
244 | error ("Operating system cannot handle asynchronous subprocesses"); |
245 | #endif /* subprocesses */ | |
246 | ||
09494912 | 247 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
248 | { |
249 | Lisp_Object val, *args2; | |
32d08644 KH |
250 | int i; |
251 | ||
252 | /* If arguments are supplied, we may have to encode them. */ | |
253 | if (nargs >= 5) | |
254 | { | |
30d57b8e RS |
255 | int must_encode = 0; |
256 | ||
e7c1c20e RS |
257 | for (i = 4; i < nargs; i++) |
258 | CHECK_STRING (args[i], i); | |
259 | ||
a2286b5c | 260 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
261 | if (STRING_MULTIBYTE (args[i])) |
262 | must_encode = 1; | |
263 | ||
beacaab3 KH |
264 | if (!NILP (Vcoding_system_for_write)) |
265 | val = Vcoding_system_for_write; | |
30d57b8e | 266 | else if (! must_encode) |
beacaab3 KH |
267 | val = Qnil; |
268 | else | |
32d08644 KH |
269 | { |
270 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
271 | args2[0] = Qcall_process; | |
272 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 273 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 274 | if (CONSP (coding_systems)) |
70949dac | 275 | val = XCDR (coding_systems); |
776b95cb | 276 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 277 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
278 | else |
279 | val = Qnil; | |
32d08644 KH |
280 | } |
281 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); | |
282 | } | |
32d08644 KH |
283 | } |
284 | ||
e576cab4 JB |
285 | if (nargs >= 2 && ! NILP (args[1])) |
286 | { | |
287 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
288 | CHECK_STRING (infile, 1); | |
289 | } | |
80856e74 | 290 | else |
5437e9f9 | 291 | infile = build_string (NULL_DEVICE); |
80856e74 | 292 | |
e576cab4 JB |
293 | if (nargs >= 3) |
294 | { | |
39eaa782 RS |
295 | buffer = args[2]; |
296 | ||
297 | /* If BUFFER is a list, its meaning is | |
298 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
299 | if (CONSP (buffer)) | |
300 | { | |
70949dac | 301 | if (CONSP (XCDR (buffer))) |
45be8a1e | 302 | { |
a9d4f28a | 303 | Lisp_Object stderr_file; |
70949dac | 304 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
305 | |
306 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
307 | error_file = stderr_file; | |
308 | else | |
309 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
310 | } | |
311 | ||
70949dac | 312 | buffer = XCAR (buffer); |
39eaa782 | 313 | } |
044512ed | 314 | |
39eaa782 RS |
315 | if (!(EQ (buffer, Qnil) |
316 | || EQ (buffer, Qt) | |
3ffde7d6 | 317 | || INTEGERP (buffer))) |
e576cab4 | 318 | { |
39eaa782 RS |
319 | Lisp_Object spec_buffer; |
320 | spec_buffer = buffer; | |
50fe359b | 321 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
322 | /* Mention the buffer name for a better error message. */ |
323 | if (NILP (buffer)) | |
324 | CHECK_BUFFER (spec_buffer, 2); | |
e576cab4 JB |
325 | CHECK_BUFFER (buffer, 2); |
326 | } | |
327 | } | |
328 | else | |
329 | buffer = Qnil; | |
80856e74 | 330 | |
58616e67 JB |
331 | /* Make sure that the child will be able to chdir to the current |
332 | buffer's current directory, or its unhandled equivalent. We | |
333 | can't just have the child check for an error when it does the | |
334 | chdir, since it's in a vfork. | |
335 | ||
336 | We have to GCPRO around this because Fexpand_file_name, | |
337 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
338 | might call a file name handling function. The argument list is | |
339 | protected by the caller, so all we really have to worry about is | |
340 | buffer. */ | |
341 | { | |
342 | struct gcpro gcpro1, gcpro2, gcpro3; | |
343 | ||
344 | current_dir = current_buffer->directory; | |
345 | ||
346 | GCPRO3 (infile, buffer, current_dir); | |
347 | ||
c52b0b34 KH |
348 | current_dir |
349 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
350 | Qnil); | |
58616e67 JB |
351 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
352 | report_file_error ("Setting current directory", | |
353 | Fcons (current_buffer->directory, Qnil)); | |
354 | ||
355 | UNGCPRO; | |
356 | } | |
357 | ||
e576cab4 | 358 | display = nargs >= 4 ? args[3] : Qnil; |
80856e74 | 359 | |
68c45bf0 | 360 | filefd = emacs_open (XSTRING (infile)->data, O_RDONLY, 0); |
80856e74 JB |
361 | if (filefd < 0) |
362 | { | |
e576cab4 | 363 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
364 | } |
365 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
366 | { |
367 | struct gcpro gcpro1; | |
368 | ||
369 | GCPRO1 (current_dir); | |
370 | openp (Vexec_path, args[0], EXEC_SUFFIXES, &path, 1); | |
371 | UNGCPRO; | |
372 | } | |
012c6fcb | 373 | if (NILP (path)) |
80856e74 | 374 | { |
68c45bf0 | 375 | emacs_close (filefd); |
80856e74 JB |
376 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
377 | } | |
378 | new_argv[0] = XSTRING (path)->data; | |
c364e618 KH |
379 | if (nargs > 4) |
380 | { | |
381 | register int i; | |
c5bfa12b | 382 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 383 | |
c5bfa12b KH |
384 | GCPRO3 (infile, buffer, current_dir); |
385 | argument_coding.dst_multibyte = 0; | |
386 | for (i = 4; i < nargs; i++) | |
c364e618 | 387 | { |
c5bfa12b KH |
388 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
389 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
c364e618 | 390 | { |
c5bfa12b KH |
391 | /* We must encode this argument. */ |
392 | args[i] = encode_coding_string (args[i], &argument_coding, 1); | |
393 | if (argument_coding.type == coding_type_ccl) | |
394 | setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil); | |
c364e618 | 395 | } |
c5bfa12b | 396 | new_argv[i - 3] = XSTRING (args[i])->data; |
c364e618 | 397 | } |
c5bfa12b | 398 | UNGCPRO; |
db54baaa | 399 | new_argv[nargs - 3] = 0; |
c364e618 | 400 | } |
db54baaa KH |
401 | else |
402 | new_argv[1] = 0; | |
80856e74 | 403 | |
7e6c2178 | 404 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 405 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
406 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
407 | else | |
408 | { | |
409 | tempfile = alloca (20); | |
410 | *tempfile = '\0'; | |
411 | } | |
412 | dostounix_filename (tempfile); | |
413 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') | |
414 | strcat (tempfile, "/"); | |
415 | strcat (tempfile, "detmp.XXX"); | |
416 | mktemp (tempfile); | |
417 | ||
418 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
419 | if (outfilefd < 0) | |
420 | { | |
68c45bf0 | 421 | emacs_close (filefd); |
6f89d28a MB |
422 | report_file_error ("Opening process output file", |
423 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 424 | } |
6f89d28a | 425 | fd[0] = filefd; |
2610078a | 426 | fd[1] = outfilefd; |
6f89d28a | 427 | #endif /* MSDOS */ |
7e6c2178 | 428 | |
052062e0 RS |
429 | #ifdef macintosh |
430 | /* Since we don't have pipes on the Mac, create a temporary file to | |
431 | hold the output of the subprocess. */ | |
432 | tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
433 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, | |
434 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
435 | ||
436 | mktemp (tempfile); | |
437 | ||
438 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
439 | if (outfilefd < 0) | |
440 | { | |
441 | close (filefd); | |
442 | report_file_error ("Opening process output file", | |
443 | Fcons (build_string (tempfile), Qnil)); | |
444 | } | |
445 | fd[0] = filefd; | |
446 | fd[1] = outfilefd; | |
447 | #endif /* macintosh */ | |
448 | ||
d50d3dc8 | 449 | if (INTEGERP (buffer)) |
68c45bf0 | 450 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
451 | else |
452 | { | |
7e6c2178 | 453 | #ifndef MSDOS |
052062e0 | 454 | #ifndef macintosh |
80856e74 | 455 | pipe (fd); |
7e6c2178 | 456 | #endif |
052062e0 | 457 | #endif |
80856e74 JB |
458 | #if 0 |
459 | /* Replaced by close_process_descs */ | |
460 | set_exclusive_use (fd[0]); | |
461 | #endif | |
462 | } | |
463 | ||
464 | { | |
465 | /* child_setup must clobber environ in systems with true vfork. | |
466 | Protect it from permanent change. */ | |
467 | register char **save_environ = environ; | |
468 | register int fd1 = fd[1]; | |
39eaa782 | 469 | int fd_error = fd1; |
80856e74 JB |
470 | |
471 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 472 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
473 | #endif |
474 | ||
475 | /* Record that we're about to create a synchronous process. */ | |
476 | synch_process_alive = 1; | |
477 | ||
5c03767e RS |
478 | /* These vars record information from process termination. |
479 | Clear them now before process can possibly terminate, | |
480 | to avoid timing error if process terminates soon. */ | |
481 | synch_process_death = 0; | |
482 | synch_process_retcode = 0; | |
483 | ||
39eaa782 | 484 | if (NILP (error_file)) |
68c45bf0 | 485 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
486 | else if (STRINGP (error_file)) |
487 | { | |
488 | #ifdef DOS_NT | |
68c45bf0 PE |
489 | fd_error = emacs_open (XSTRING (error_file)->data, |
490 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
491 | S_IREAD | S_IWRITE); | |
39eaa782 RS |
492 | #else /* not DOS_NT */ |
493 | fd_error = creat (XSTRING (error_file)->data, 0666); | |
494 | #endif /* not DOS_NT */ | |
495 | } | |
496 | ||
497 | if (fd_error < 0) | |
498 | { | |
68c45bf0 | 499 | emacs_close (filefd); |
6f89d28a | 500 | if (fd[0] != filefd) |
68c45bf0 | 501 | emacs_close (fd[0]); |
39eaa782 | 502 | if (fd1 >= 0) |
68c45bf0 | 503 | emacs_close (fd1); |
6f89d28a MB |
504 | #ifdef MSDOS |
505 | unlink (tempfile); | |
506 | #endif | |
507 | report_file_error ("Cannot redirect stderr", | |
508 | Fcons ((NILP (error_file) | |
509 | ? build_string (NULL_DEVICE) : error_file), | |
510 | Qnil)); | |
39eaa782 | 511 | } |
89e1ec1d | 512 | |
8d024345 | 513 | current_dir = ENCODE_FILE (current_dir); |
89e1ec1d | 514 | |
052062e0 RS |
515 | #ifdef macintosh |
516 | { | |
517 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
518 | a child_setup as for MSDOS and other platforms. Note that this | |
519 | code does not handle passing the environment to the synchronous | |
520 | Mac subprocess. */ | |
521 | char *infn, *outfn, *errfn, *currdn; | |
522 | ||
523 | /* close these files so subprocess can write to them */ | |
524 | close (outfilefd); | |
525 | if (fd_error != outfilefd) | |
526 | close (fd_error); | |
527 | fd1 = -1; /* No harm in closing that one! */ | |
528 | ||
529 | infn = XSTRING (infile)->data; | |
530 | outfn = tempfile; | |
531 | if (NILP (error_file)) | |
532 | errfn = NULL_DEVICE; | |
533 | else if (EQ (Qt, error_file)) | |
534 | errfn = outfn; | |
535 | else | |
536 | errfn = XSTRING (error_file)->data; | |
537 | currdn = XSTRING (current_dir)->data; | |
538 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); | |
539 | ||
540 | /* Record that the synchronous process exited and note its | |
541 | termination status. */ | |
542 | synch_process_alive = 0; | |
543 | synch_process_retcode = pid; | |
544 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 545 | { |
ca9c0567 | 546 | synchronize_system_messages_locale (); |
68c45bf0 PE |
547 | synch_process_death = strerror (errno); |
548 | } | |
052062e0 RS |
549 | |
550 | /* Since CRLF is converted to LF within `decode_coding', we can | |
551 | always open a file with binary mode. */ | |
552 | fd[0] = open (tempfile, O_BINARY); | |
553 | if (fd[0] < 0) | |
554 | { | |
555 | unlink (tempfile); | |
556 | close (filefd); | |
557 | report_file_error ("Cannot re-open temporary file", Qnil); | |
558 | } | |
559 | } | |
560 | #else /* not macintosh */ | |
2610078a | 561 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 562 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
563 | exit status, not its PID, so we assign it to `synch_process_retcode' |
564 | below. */ | |
c17c4250 EZ |
565 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
566 | 0, current_dir); | |
39eaa782 | 567 | |
2610078a KH |
568 | /* Record that the synchronous process exited and note its |
569 | termination status. */ | |
570 | synch_process_alive = 0; | |
571 | synch_process_retcode = pid; | |
572 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 573 | { |
ca9c0567 | 574 | synchronize_system_messages_locale (); |
68c45bf0 PE |
575 | synch_process_death = strerror (errno); |
576 | } | |
2610078a | 577 | |
68c45bf0 | 578 | emacs_close (outfilefd); |
2610078a | 579 | if (fd_error != outfilefd) |
68c45bf0 | 580 | emacs_close (fd_error); |
2610078a | 581 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
582 | /* Since CRLF is converted to LF within `decode_coding', we can |
583 | always open a file with binary mode. */ | |
68c45bf0 | 584 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
585 | if (fd[0] < 0) |
586 | { | |
587 | unlink (tempfile); | |
68c45bf0 | 588 | emacs_close (filefd); |
2610078a KH |
589 | report_file_error ("Cannot re-open temporary file", Qnil); |
590 | } | |
591 | #else /* not MSDOS */ | |
bad95d8f | 592 | #ifdef WINDOWSNT |
2d607244 RS |
593 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
594 | 0, current_dir); | |
bad95d8f | 595 | #else /* not WINDOWSNT */ |
80856e74 JB |
596 | pid = vfork (); |
597 | ||
598 | if (pid == 0) | |
599 | { | |
600 | if (fd[0] >= 0) | |
68c45bf0 | 601 | emacs_close (fd[0]); |
1e7963c7 RS |
602 | #ifdef HAVE_SETSID |
603 | setsid (); | |
604 | #endif | |
605 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
606 | setpgrp (); |
607 | #else | |
608 | setpgrp (pid, pid); | |
609 | #endif /* USG */ | |
2d607244 RS |
610 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
611 | 0, current_dir); | |
80856e74 | 612 | } |
bad95d8f | 613 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
614 | |
615 | /* The MSDOS case did this already. */ | |
616 | if (fd_error >= 0) | |
68c45bf0 | 617 | emacs_close (fd_error); |
2610078a | 618 | #endif /* not MSDOS */ |
052062e0 | 619 | #endif /* not macintosh */ |
80856e74 | 620 | |
80856e74 JB |
621 | environ = save_environ; |
622 | ||
6b6e798b RS |
623 | /* Close most of our fd's, but not fd[0] |
624 | since we will use that to read input from. */ | |
68c45bf0 | 625 | emacs_close (filefd); |
799abb26 | 626 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 627 | emacs_close (fd1); |
80856e74 JB |
628 | } |
629 | ||
630 | if (pid < 0) | |
631 | { | |
6b6e798b | 632 | if (fd[0] >= 0) |
68c45bf0 | 633 | emacs_close (fd[0]); |
80856e74 JB |
634 | report_file_error ("Doing vfork", Qnil); |
635 | } | |
636 | ||
d50d3dc8 | 637 | if (INTEGERP (buffer)) |
80856e74 | 638 | { |
6b6e798b | 639 | if (fd[0] >= 0) |
68c45bf0 | 640 | emacs_close (fd[0]); |
80856e74 | 641 | #ifndef subprocesses |
e576cab4 JB |
642 | /* If Emacs has been built with asynchronous subprocess support, |
643 | we don't need to do this, I think because it will then have | |
644 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
645 | wait_without_blocking (); |
646 | #endif /* subprocesses */ | |
80856e74 JB |
647 | return Qnil; |
648 | } | |
649 | ||
6b6e798b | 650 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
651 | call_process_exited = 0; |
652 | ||
052062e0 | 653 | #if defined(MSDOS) || defined(macintosh) |
7e6c2178 RS |
654 | /* MSDOS needs different cleanup information. */ |
655 | record_unwind_protect (call_process_cleanup, | |
656 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
657 | #else | |
80856e74 JB |
658 | record_unwind_protect (call_process_cleanup, |
659 | Fcons (make_number (fd[0]), make_number (pid))); | |
052062e0 | 660 | #endif /* not MSDOS and not macintosh */ |
80856e74 JB |
661 | |
662 | ||
d50d3dc8 | 663 | if (BUFFERP (buffer)) |
80856e74 JB |
664 | Fset_buffer (buffer); |
665 | ||
09494912 RS |
666 | if (NILP (buffer)) |
667 | { | |
668 | /* If BUFFER is nil, we must read process output once and then | |
669 | discard it, so setup coding system but with nil. */ | |
670 | setup_coding_system (Qnil, &process_coding); | |
671 | } | |
672 | else | |
673 | { | |
674 | Lisp_Object val, *args2; | |
675 | ||
676 | val = Qnil; | |
677 | if (!NILP (Vcoding_system_for_read)) | |
678 | val = Vcoding_system_for_read; | |
679 | else | |
680 | { | |
681 | if (EQ (coding_systems, Qt)) | |
682 | { | |
683 | int i; | |
684 | ||
685 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
686 | args2[0] = Qcall_process; | |
687 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
688 | coding_systems | |
689 | = Ffind_operation_coding_system (nargs + 1, args2); | |
690 | } | |
691 | if (CONSP (coding_systems)) | |
70949dac | 692 | val = XCAR (coding_systems); |
09494912 | 693 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 694 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
695 | else |
696 | val = Qnil; | |
697 | } | |
698 | setup_coding_system (Fcheck_coding_system (val), &process_coding); | |
699 | /* In unibyte mode, character code conversion should not take | |
700 | place but EOL conversion should. So, setup raw-text or one | |
701 | of the subsidiary according to the information just setup. */ | |
702 | if (NILP (current_buffer->enable_multibyte_characters) | |
703 | && !NILP (val)) | |
704 | setup_raw_text_coding_system (&process_coding); | |
705 | } | |
c5bfa12b KH |
706 | process_coding.src_multibyte = 0; |
707 | process_coding.dst_multibyte | |
708 | = (BUFFERP (buffer) | |
709 | ? ! NILP (XBUFFER (buffer)->enable_multibyte_characters) | |
710 | : ! NILP (current_buffer->enable_multibyte_characters)); | |
09494912 | 711 | |
80856e74 JB |
712 | immediate_quit = 1; |
713 | QUIT; | |
714 | ||
715 | { | |
716 | register int nread; | |
0ad477db | 717 | int first = 1; |
6e3bfbb2 | 718 | int total_read = 0; |
321fecde | 719 | int carryover = 0; |
7a7ab107 | 720 | int display_on_the_fly = !NILP (display) && INTERACTIVE; |
05b44e90 KH |
721 | struct coding_system saved_coding; |
722 | ||
723 | saved_coding = process_coding; | |
80856e74 | 724 | |
60558b19 | 725 | while (1) |
80856e74 | 726 | { |
60558b19 RS |
727 | /* Repeatedly read until we've filled as much as possible |
728 | of the buffer size we have. But don't read | |
8e6208c5 | 729 | less than 1024--save that for the next bufferful. */ |
321fecde | 730 | nread = carryover; |
60558b19 | 731 | while (nread < bufsize - 1024) |
00fb3e95 | 732 | { |
68c45bf0 PE |
733 | int this_read = emacs_read (fd[0], bufptr + nread, |
734 | bufsize - nread); | |
60558b19 RS |
735 | |
736 | if (this_read < 0) | |
737 | goto give_up; | |
738 | ||
739 | if (this_read == 0) | |
7a7ab107 KH |
740 | { |
741 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
742 | break; | |
743 | } | |
60558b19 RS |
744 | |
745 | nread += this_read; | |
7a7ab107 | 746 | total_read += this_read; |
60558b19 | 747 | |
7a7ab107 KH |
748 | if (display_on_the_fly) |
749 | break; | |
750 | } | |
60558b19 RS |
751 | |
752 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 753 | immediate_quit = 0; |
6e3bfbb2 | 754 | |
012c6fcb | 755 | if (!NILP (buffer)) |
32d08644 | 756 | { |
c5bfa12b KH |
757 | if (! CODING_MAY_REQUIRE_DECODING (&process_coding)) |
758 | insert_1_both (bufptr, nread, nread, 0, 1, 0); | |
32d08644 KH |
759 | else |
760 | { /* We have to decode the input. */ | |
321fecde | 761 | int size = decoding_buffer_size (&process_coding, nread); |
a871dd58 | 762 | char *decoding_buf = (char *) xmalloc (size); |
32d08644 | 763 | |
321fecde KH |
764 | decode_coding (&process_coding, bufptr, decoding_buf, |
765 | nread, size); | |
7a7ab107 KH |
766 | if (display_on_the_fly |
767 | && saved_coding.type == coding_type_undecided | |
768 | && process_coding.type != coding_type_undecided) | |
769 | { | |
770 | /* We have detected some coding system. But, | |
771 | there's a possibility that the detection was | |
772 | done by insufficient data. So, we give up | |
773 | displaying on the fly. */ | |
a871dd58 | 774 | xfree (decoding_buf); |
7a7ab107 KH |
775 | display_on_the_fly = 0; |
776 | process_coding = saved_coding; | |
777 | carryover = nread; | |
778 | continue; | |
779 | } | |
321fecde | 780 | if (process_coding.produced > 0) |
c5bfa12b KH |
781 | insert_1_both (decoding_buf, process_coding.produced_char, |
782 | process_coding.produced, 0, 1, 0); | |
a871dd58 | 783 | xfree (decoding_buf); |
11218c68 | 784 | carryover = nread - process_coding.consumed; |
321fecde | 785 | if (carryover > 0) |
c5bfa12b KH |
786 | /* As CARRYOVER should not be that large, we had |
787 | better avoid overhead of bcopy. */ | |
788 | BCOPY_SHORT (bufptr + process_coding.consumed, bufptr, | |
789 | carryover); | |
32d08644 KH |
790 | } |
791 | } | |
c5bfa12b | 792 | |
321fecde | 793 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 794 | break; |
6e3bfbb2 RS |
795 | |
796 | /* Make the buffer bigger as we continue to read more data, | |
797 | but not past 64k. */ | |
798 | if (bufsize < 64 * 1024 && total_read > 32 * bufsize) | |
799 | { | |
800 | bufsize *= 2; | |
801 | bufptr = (char *) alloca (bufsize); | |
802 | } | |
803 | ||
012c6fcb | 804 | if (!NILP (display) && INTERACTIVE) |
0ad477db RS |
805 | { |
806 | if (first) | |
807 | prepare_menu_bars (); | |
808 | first = 0; | |
809 | redisplay_preserve_echo_area (); | |
810 | } | |
80856e74 JB |
811 | immediate_quit = 1; |
812 | QUIT; | |
813 | } | |
60558b19 | 814 | give_up: ; |
80856e74 | 815 | |
bca78757 | 816 | Vlast_coding_system_used = process_coding.symbol; |
bbd29cfe | 817 | |
bca78757 KH |
818 | /* If the caller required, let the buffer inherit the |
819 | coding-system used to decode the process output. */ | |
820 | if (inherit_process_coding_system) | |
821 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
822 | make_number (total_read)); | |
3b440bb5 EZ |
823 | } |
824 | ||
80856e74 JB |
825 | /* Wait for it to terminate, unless it already has. */ |
826 | wait_for_termination (pid); | |
827 | ||
828 | immediate_quit = 0; | |
829 | ||
830 | set_buffer_internal (old); | |
831 | ||
37d54121 RS |
832 | /* Don't kill any children that the subprocess may have left behind |
833 | when exiting. */ | |
834 | call_process_exited = 1; | |
835 | ||
80856e74 JB |
836 | unbind_to (count, Qnil); |
837 | ||
80856e74 | 838 | if (synch_process_death) |
68c45bf0 PE |
839 | return code_convert_string_norecord (build_string (synch_process_death), |
840 | Vlocale_coding_system, 0); | |
80856e74 JB |
841 | return make_number (synch_process_retcode); |
842 | } | |
843 | #endif | |
844 | \f | |
9fefd2ba | 845 | static Lisp_Object |
80856e74 JB |
846 | delete_temp_file (name) |
847 | Lisp_Object name; | |
848 | { | |
2e3dc201 | 849 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 850 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 851 | internal_delete_file (name); |
80856e74 JB |
852 | } |
853 | ||
854 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
855 | 3, MANY, 0, | |
856 | "Send text from START to END to a synchronous process running PROGRAM.\n\ | |
edf496dd | 857 | The remaining arguments are optional.\n\ |
80856e74 | 858 | Delete the text if fourth arg DELETE is non-nil.\n\ |
39eaa782 | 859 | \n\ |
80856e74 JB |
860 | Insert output in BUFFER before point; t means current buffer;\n\ |
861 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
862 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
863 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
864 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
865 | STDERR-FILE may be nil (discard standard error output),\n\ | |
866 | t (mix it with ordinary output), or a file name string.\n\ | |
867 | \n\ | |
80856e74 JB |
868 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
869 | Remaining args are passed to PROGRAM at startup as command args.\n\ | |
39eaa782 RS |
870 | \n\ |
871 | If BUFFER is nil, `call-process-region' returns immediately with value nil.\n\ | |
872 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 873 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 874 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
875 | (nargs, args) |
876 | int nargs; | |
877 | register Lisp_Object *args; | |
878 | { | |
39323a7e KH |
879 | struct gcpro gcpro1; |
880 | Lisp_Object filename_string; | |
881 | register Lisp_Object start, end; | |
d3e81d0a | 882 | int count = specpdl_ptr - specpdl; |
08ee4e87 | 883 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 884 | Lisp_Object coding_systems; |
32d08644 KH |
885 | Lisp_Object val, *args2; |
886 | int i; | |
bad95d8f | 887 | #ifdef DOS_NT |
7e6c2178 | 888 | char *tempfile; |
7e6c2178 RS |
889 | char *outf = '\0'; |
890 | ||
8a52365c EZ |
891 | if ((outf = egetenv ("TMPDIR")) |
892 | || (outf = egetenv ("TMP")) | |
893 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
894 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
895 | else | |
896 | { | |
897 | tempfile = alloca (20); | |
898 | *tempfile = '\0'; | |
899 | } | |
0774fcf8 | 900 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 901 | strcat (tempfile, "/"); |
5711b547 RS |
902 | if ('/' == DIRECTORY_SEP) |
903 | dostounix_filename (tempfile); | |
904 | else | |
905 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
906 | #ifdef WINDOWSNT |
907 | strcat (tempfile, "emXXXXXX"); | |
908 | #else | |
7e6c2178 | 909 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 910 | #endif |
bad95d8f | 911 | #else /* not DOS_NT */ |
fc932ac6 | 912 | char *tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
8abd035b | 913 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, |
fc932ac6 | 914 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
bad95d8f | 915 | #endif /* not DOS_NT */ |
7e6c2178 | 916 | |
09494912 RS |
917 | coding_systems = Qt; |
918 | ||
80856e74 JB |
919 | mktemp (tempfile); |
920 | ||
921 | filename_string = build_string (tempfile); | |
39323a7e | 922 | GCPRO1 (filename_string); |
80856e74 JB |
923 | start = args[0]; |
924 | end = args[1]; | |
32d08644 | 925 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
926 | if (!NILP (Vcoding_system_for_write)) |
927 | val = Vcoding_system_for_write; | |
928 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
929 | val = Qnil; |
930 | else | |
beacaab3 | 931 | { |
91489411 RS |
932 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
933 | args2[0] = Qcall_process_region; | |
934 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
935 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
936 | if (CONSP (coding_systems)) | |
70949dac | 937 | val = XCDR (coding_systems); |
91489411 | 938 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 939 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 940 | else |
91489411 | 941 | val = Qnil; |
beacaab3 | 942 | } |
32d08644 | 943 | |
168afdaa RS |
944 | { |
945 | int count1 = specpdl_ptr - specpdl; | |
946 | ||
947 | specbind (intern ("coding-system-for-write"), val); | |
948 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); | |
949 | ||
950 | unbind_to (count1, Qnil); | |
951 | } | |
91489411 RS |
952 | |
953 | /* Note that Fcall_process takes care of binding | |
954 | coding-system-for-read. */ | |
093650fe | 955 | |
80856e74 JB |
956 | record_unwind_protect (delete_temp_file, filename_string); |
957 | ||
edf496dd | 958 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
959 | Fdelete_region (start, end); |
960 | ||
edf496dd KH |
961 | if (nargs > 3) |
962 | { | |
963 | args += 2; | |
964 | nargs -= 2; | |
965 | } | |
966 | else | |
967 | { | |
968 | args[0] = args[2]; | |
969 | nargs = 2; | |
970 | } | |
971 | args[1] = filename_string; | |
80856e74 | 972 | |
edf496dd | 973 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
974 | } |
975 | \f | |
976 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
977 | ||
dfcf069d AS |
978 | static int relocate_fd (); |
979 | ||
80856e74 JB |
980 | /* This is the last thing run in a newly forked inferior |
981 | either synchronous or asynchronous. | |
982 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
983 | Initialize inferior's priority, pgrp, connected dir and environment. | |
984 | then exec another program based on new_argv. | |
985 | ||
986 | This function may change environ for the superior process. | |
987 | Therefore, the superior process must save and restore the value | |
988 | of environ around the vfork and the call to this function. | |
989 | ||
80856e74 | 990 | SET_PGRP is nonzero if we should put the subprocess into a separate |
e576cab4 JB |
991 | process group. |
992 | ||
993 | CURRENT_DIR is an elisp string giving the path of the current | |
994 | directory the subprocess should have. Since we can't really signal | |
995 | a decent error from within the child, this should be verified as an | |
996 | executable directory by the parent. */ | |
80856e74 | 997 | |
dfcf069d | 998 | int |
e576cab4 | 999 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1000 | int in, out, err; |
1001 | register char **new_argv; | |
80856e74 | 1002 | int set_pgrp; |
e576cab4 | 1003 | Lisp_Object current_dir; |
80856e74 | 1004 | { |
e576cab4 | 1005 | char **env; |
7fcf7f05 | 1006 | char *pwd_var; |
bad95d8f RS |
1007 | #ifdef WINDOWSNT |
1008 | int cpid; | |
4252a4bd | 1009 | HANDLE handles[3]; |
bad95d8f | 1010 | #endif /* WINDOWSNT */ |
e576cab4 | 1011 | |
33abe2d9 | 1012 | int pid = getpid (); |
80856e74 | 1013 | |
68d10241 | 1014 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 JB |
1015 | { |
1016 | extern int emacs_priority; | |
1017 | ||
68d10241 RS |
1018 | if (emacs_priority < 0) |
1019 | nice (- emacs_priority); | |
4f0b9d49 | 1020 | } |
5b633aeb | 1021 | #endif |
80856e74 JB |
1022 | |
1023 | #ifdef subprocesses | |
1024 | /* Close Emacs's descriptors that this process should not have. */ | |
1025 | close_process_descs (); | |
1026 | #endif | |
c17c4250 EZ |
1027 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1028 | we will lose if we call close_load_descs here. */ | |
1029 | #ifndef DOS_NT | |
4458cebe | 1030 | close_load_descs (); |
c17c4250 | 1031 | #endif |
80856e74 JB |
1032 | |
1033 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1034 | that do not have true vfork or that have true (stack) alloca. | |
1035 | If using vfork and C_ALLOCA it is safe because that changes | |
1036 | the superior's static variables as if the superior had done alloca | |
1037 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1038 | { |
7fcf7f05 | 1039 | register char *temp; |
e576cab4 | 1040 | register int i; |
77d78be1 | 1041 | |
fc932ac6 | 1042 | i = STRING_BYTES (XSTRING (current_dir)); |
7fcf7f05 RS |
1043 | pwd_var = (char *) alloca (i + 6); |
1044 | temp = pwd_var + 4; | |
1045 | bcopy ("PWD=", pwd_var, 4); | |
e576cab4 | 1046 | bcopy (XSTRING (current_dir)->data, temp, i); |
bad95d8f | 1047 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1048 | temp[i] = 0; |
1049 | ||
c17c4250 | 1050 | #ifndef DOS_NT |
e576cab4 JB |
1051 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1052 | the callers check the current directory before forking, this | |
1053 | should only return an error if the directory's permissions | |
1054 | are changed between the check and this chdir, but we should | |
1055 | at least check. */ | |
1056 | if (chdir (temp) < 0) | |
20b25e46 | 1057 | _exit (errno); |
b4c7684c | 1058 | #endif |
7fcf7f05 | 1059 | |
c17c4250 EZ |
1060 | #ifdef DOS_NT |
1061 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1062 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1063 | { | |
1064 | temp += 2; | |
1065 | i -= 2; | |
1066 | } | |
1067 | #endif | |
1068 | ||
7fcf7f05 | 1069 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1070 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1071 | temp[--i] = 0; |
e576cab4 | 1072 | } |
80856e74 | 1073 | |
80856e74 JB |
1074 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1075 | { | |
1076 | register Lisp_Object tem; | |
1077 | register char **new_env; | |
1078 | register int new_length; | |
1079 | ||
1080 | new_length = 0; | |
1081 | for (tem = Vprocess_environment; | |
70949dac KR |
1082 | CONSP (tem) && STRINGP (XCAR (tem)); |
1083 | tem = XCDR (tem)) | |
80856e74 JB |
1084 | new_length++; |
1085 | ||
7fcf7f05 RS |
1086 | /* new_length + 2 to include PWD and terminating 0. */ |
1087 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1088 | ||
1089 | /* If we have a PWD envvar, pass one down, | |
1090 | but with corrected value. */ | |
1091 | if (getenv ("PWD")) | |
1092 | *new_env++ = pwd_var; | |
80856e74 | 1093 | |
cd9565ba | 1094 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1095 | for (tem = Vprocess_environment; |
70949dac KR |
1096 | CONSP (tem) && STRINGP (XCAR (tem)); |
1097 | tem = XCDR (tem)) | |
cd9565ba RS |
1098 | { |
1099 | char **ep = env; | |
70949dac | 1100 | char *string = (char *) XSTRING (XCAR (tem))->data; |
cd9565ba RS |
1101 | /* See if this string duplicates any string already in the env. |
1102 | If so, don't put it in. | |
1103 | When an env var has multiple definitions, | |
1104 | we keep the definition that comes first in process-environment. */ | |
1105 | for (; ep != new_env; ep++) | |
1106 | { | |
1107 | char *p = *ep, *q = string; | |
1108 | while (1) | |
1109 | { | |
1110 | if (*q == 0) | |
1111 | /* The string is malformed; might as well drop it. */ | |
1112 | goto duplicate; | |
1113 | if (*q != *p) | |
1114 | break; | |
1115 | if (*q == '=') | |
1116 | goto duplicate; | |
1117 | p++, q++; | |
1118 | } | |
1119 | } | |
1120 | *new_env++ = string; | |
1121 | duplicate: ; | |
1122 | } | |
80856e74 JB |
1123 | *new_env = 0; |
1124 | } | |
bad95d8f RS |
1125 | #ifdef WINDOWSNT |
1126 | prepare_standard_handles (in, out, err, handles); | |
b4c7684c | 1127 | set_process_dir (XSTRING (current_dir)->data); |
bad95d8f | 1128 | #else /* not WINDOWSNT */ |
426b37ae JB |
1129 | /* Make sure that in, out, and err are not actually already in |
1130 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1131 | started with its standard in, out, or error closed, as might |
426b37ae | 1132 | happen under X. */ |
f29f9e4a RS |
1133 | { |
1134 | int oin = in, oout = out; | |
1135 | ||
1136 | /* We have to avoid relocating the same descriptor twice! */ | |
1137 | ||
1138 | in = relocate_fd (in, 3); | |
1139 | ||
1140 | if (out == oin) | |
1141 | out = in; | |
1142 | else | |
3e9367e7 | 1143 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1144 | |
1145 | if (err == oin) | |
1146 | err = in; | |
1147 | else if (err == oout) | |
1148 | err = out; | |
1149 | else | |
3e9367e7 | 1150 | err = relocate_fd (err, 3); |
f29f9e4a | 1151 | } |
426b37ae | 1152 | |
c17c4250 | 1153 | #ifndef MSDOS |
68c45bf0 PE |
1154 | emacs_close (0); |
1155 | emacs_close (1); | |
1156 | emacs_close (2); | |
80856e74 JB |
1157 | |
1158 | dup2 (in, 0); | |
1159 | dup2 (out, 1); | |
1160 | dup2 (err, 2); | |
68c45bf0 PE |
1161 | emacs_close (in); |
1162 | emacs_close (out); | |
1163 | emacs_close (err); | |
c17c4250 | 1164 | #endif /* not MSDOS */ |
bad95d8f | 1165 | #endif /* not WINDOWSNT */ |
80856e74 | 1166 | |
6b2cd868 | 1167 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1168 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1169 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1170 | #endif |
e576cab4 JB |
1171 | #else |
1172 | setpgrp (pid, pid); | |
1173 | #endif /* USG */ | |
a129418f RS |
1174 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1175 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 JB |
1176 | |
1177 | #ifdef vipc | |
1178 | something missing here; | |
1179 | #endif /* vipc */ | |
1180 | ||
c17c4250 EZ |
1181 | #ifdef MSDOS |
1182 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
1183 | if (pid == -1) | |
1184 | /* An error occurred while trying to run the subprocess. */ | |
1185 | report_file_error ("Spawning child process", Qnil); | |
1186 | return pid; | |
1187 | #else /* not MSDOS */ | |
bad95d8f RS |
1188 | #ifdef WINDOWSNT |
1189 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1190 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1191 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1192 | if (cpid == -1) |
1193 | /* An error occurred while trying to spawn the process. */ | |
1194 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1195 | return cpid; |
1196 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1197 | /* execvp does not accept an environment arg so the only way |
1198 | to pass this environment is to set environ. Our caller | |
1199 | is responsible for restoring the ambient value of environ. */ | |
1200 | environ = env; | |
1201 | execvp (new_argv[0], new_argv); | |
1202 | ||
68c45bf0 PE |
1203 | emacs_write (1, "Can't exec program: ", 20); |
1204 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1205 | emacs_write (1, "\n", 1); | |
80856e74 | 1206 | _exit (1); |
bad95d8f | 1207 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1208 | #endif /* not MSDOS */ |
80856e74 JB |
1209 | } |
1210 | ||
a3833dfe | 1211 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1212 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1213 | static int |
a3833dfe KH |
1214 | relocate_fd (fd, minfd) |
1215 | int fd, minfd; | |
426b37ae | 1216 | { |
a3833dfe | 1217 | if (fd >= minfd) |
426b37ae JB |
1218 | return fd; |
1219 | else | |
1220 | { | |
1221 | int new = dup (fd); | |
1222 | if (new == -1) | |
1223 | { | |
20c018a0 | 1224 | char *message1 = "Error while setting up child: "; |
826c56ac | 1225 | char *errmessage = strerror (errno); |
20c018a0 | 1226 | char *message2 = "\n"; |
68c45bf0 PE |
1227 | emacs_write (2, message1, strlen (message1)); |
1228 | emacs_write (2, errmessage, strlen (errmessage)); | |
1229 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1230 | _exit (1); |
1231 | } | |
1232 | /* Note that we hold the original FD open while we recurse, | |
1233 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1234 | new = relocate_fd (new, minfd); |
68c45bf0 | 1235 | emacs_close (fd); |
426b37ae JB |
1236 | return new; |
1237 | } | |
1238 | } | |
1239 | ||
012c6fcb JA |
1240 | static int |
1241 | getenv_internal (var, varlen, value, valuelen) | |
1242 | char *var; | |
1243 | int varlen; | |
1244 | char **value; | |
1245 | int *valuelen; | |
1246 | { | |
1247 | Lisp_Object scan; | |
1248 | ||
70949dac | 1249 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1250 | { |
c1350752 KH |
1251 | Lisp_Object entry; |
1252 | ||
70949dac | 1253 | entry = XCAR (scan); |
d50d3dc8 | 1254 | if (STRINGP (entry) |
fc932ac6 | 1255 | && STRING_BYTES (XSTRING (entry)) > varlen |
012c6fcb | 1256 | && XSTRING (entry)->data[varlen] == '=' |
bad95d8f RS |
1257 | #ifdef WINDOWSNT |
1258 | /* NT environment variables are case insensitive. */ | |
a9971c6d | 1259 | && ! strnicmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1260 | #else /* not WINDOWSNT */ |
a9971c6d | 1261 | && ! bcmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1262 | #endif /* not WINDOWSNT */ |
a9971c6d | 1263 | ) |
012c6fcb JA |
1264 | { |
1265 | *value = (char *) XSTRING (entry)->data + (varlen + 1); | |
fc932ac6 | 1266 | *valuelen = STRING_BYTES (XSTRING (entry)) - (varlen + 1); |
012c6fcb JA |
1267 | return 1; |
1268 | } | |
1269 | } | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
83fa009c | 1274 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0, |
012c6fcb JA |
1275 | "Return the value of environment variable VAR, as a string.\n\ |
1276 | VAR should be a string. Value is nil if VAR is undefined in the environment.\n\ | |
1277 | This function consults the variable ``process-environment'' for its value.") | |
1278 | (var) | |
1279 | Lisp_Object var; | |
1280 | { | |
1281 | char *value; | |
1282 | int valuelen; | |
1283 | ||
1284 | CHECK_STRING (var, 0); | |
fc932ac6 | 1285 | if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)), |
012c6fcb JA |
1286 | &value, &valuelen)) |
1287 | return make_string (value, valuelen); | |
1288 | else | |
1289 | return Qnil; | |
1290 | } | |
1291 | ||
1292 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1293 | callable from C. */ |
012c6fcb JA |
1294 | char * |
1295 | egetenv (var) | |
e576cab4 | 1296 | char *var; |
012c6fcb JA |
1297 | { |
1298 | char *value; | |
1299 | int valuelen; | |
1300 | ||
1301 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1302 | return value; | |
1303 | else | |
1304 | return 0; | |
1305 | } | |
1306 | ||
80856e74 JB |
1307 | #endif /* not VMS */ |
1308 | \f | |
8de15d69 | 1309 | /* This is run before init_cmdargs. */ |
7e6c2178 | 1310 | |
dfcf069d | 1311 | void |
8de15d69 RS |
1312 | init_callproc_1 () |
1313 | { | |
1314 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1315 | char *doc_dir = egetenv ("EMACSDOC"); |
1316 | ||
8de15d69 | 1317 | Vdata_directory |
7e6c2178 | 1318 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1319 | : PATH_DATA)); |
35a2f4b8 KH |
1320 | Vdoc_directory |
1321 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1322 | : PATH_DOC)); | |
9453ea7b | 1323 | |
e576cab4 | 1324 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1325 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1326 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1327 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1328 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1329 | } |
1330 | ||
e17f7533 | 1331 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1332 | |
dfcf069d | 1333 | void |
8de15d69 RS |
1334 | init_callproc () |
1335 | { | |
1336 | char *data_dir = egetenv ("EMACSDATA"); | |
1337 | ||
1338 | register char * sh; | |
1339 | Lisp_Object tempdir; | |
1340 | ||
9cc4fad5 | 1341 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1342 | { |
05630743 RS |
1343 | /* Add to the path the lib-src subdir of the installation dir. */ |
1344 | Lisp_Object tem; | |
1345 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1346 | Vinstallation_directory); | |
bad95d8f | 1347 | #ifndef DOS_NT |
1a6640ec | 1348 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc RS |
1349 | if (NILP (Fmember (tem, Vexec_path))) |
1350 | Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil)); | |
1351 | ||
1352 | Vexec_directory = Ffile_name_as_directory (tem); | |
bad95d8f | 1353 | #endif /* not DOS_NT */ |
8de15d69 | 1354 | |
e17f7533 RS |
1355 | /* Maybe use ../etc as well as ../lib-src. */ |
1356 | if (data_dir == 0) | |
1357 | { | |
1358 | tem = Fexpand_file_name (build_string ("etc"), | |
1359 | Vinstallation_directory); | |
1360 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1361 | } |
1362 | } | |
7e933683 RS |
1363 | |
1364 | /* Look for the files that should be in etc. We don't use | |
1365 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1366 | near the executable, and they are never in the build |
7e933683 RS |
1367 | directory when that's different from the source directory. |
1368 | ||
1369 | Instead, if these files are not in the nominal place, we try the | |
1370 | source directory. */ | |
1371 | if (data_dir == 0) | |
1372 | { | |
1373 | Lisp_Object tem, tem1, newdir; | |
1374 | ||
1375 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); | |
1376 | tem1 = Ffile_exists_p (tem); | |
1377 | if (NILP (tem1)) | |
1378 | { | |
1379 | newdir = Fexpand_file_name (build_string ("../etc/"), | |
1380 | build_string (PATH_DUMPLOADSEARCH)); | |
1381 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1382 | tem1 = Ffile_exists_p (tem); | |
1383 | if (!NILP (tem1)) | |
1384 | Vdata_directory = newdir; | |
1385 | } | |
1386 | } | |
80856e74 | 1387 | |
d883eb62 RS |
1388 | #ifndef CANNOT_DUMP |
1389 | if (initialized) | |
1390 | #endif | |
1391 | { | |
1392 | tempdir = Fdirectory_file_name (Vexec_directory); | |
1393 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
1394 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", | |
1395 | Vexec_directory); | |
1396 | } | |
80856e74 | 1397 | |
e576cab4 JB |
1398 | tempdir = Fdirectory_file_name (Vdata_directory); |
1399 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
76d5c6cf RS |
1400 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1401 | Vdata_directory); | |
e576cab4 | 1402 | |
80856e74 JB |
1403 | #ifdef VMS |
1404 | Vshell_file_name = build_string ("*dcl*"); | |
1405 | #else | |
e576cab4 | 1406 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1407 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1408 | #endif | |
8abd035b RS |
1409 | |
1410 | #ifdef VMS | |
1411 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1412 | #else | |
1413 | if (getenv ("TMPDIR")) | |
1414 | { | |
1415 | char *dir = getenv ("TMPDIR"); | |
1416 | Vtemp_file_name_pattern | |
1417 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1418 | build_string (dir)); | |
1419 | } | |
1420 | else | |
1421 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1422 | #endif | |
9fefd2ba JB |
1423 | } |
1424 | ||
dfcf069d | 1425 | void |
9fefd2ba JB |
1426 | set_process_environment () |
1427 | { | |
1428 | register char **envp; | |
80856e74 | 1429 | |
80856e74 JB |
1430 | Vprocess_environment = Qnil; |
1431 | #ifndef CANNOT_DUMP | |
1432 | if (initialized) | |
1433 | #endif | |
1434 | for (envp = environ; *envp; envp++) | |
1435 | Vprocess_environment = Fcons (build_string (*envp), | |
1436 | Vprocess_environment); | |
80856e74 JB |
1437 | } |
1438 | ||
dfcf069d | 1439 | void |
80856e74 JB |
1440 | syms_of_callproc () |
1441 | { | |
bad95d8f | 1442 | #ifdef DOS_NT |
093650fe RS |
1443 | Qbuffer_file_type = intern ("buffer-file-type"); |
1444 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1445 | #endif /* DOS_NT */ |
7e6c2178 | 1446 | |
80856e74 JB |
1447 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
1448 | "*File name to load inferior shells from.\n\ | |
1449 | Initialized from the SHELL environment variable."); | |
1450 | ||
1451 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
1452 | "*List of directories to search programs to run in subprocesses.\n\ | |
1453 | Each element is a string (directory name) or nil (try default directory)."); | |
1454 | ||
1455 | DEFVAR_LISP ("exec-directory", &Vexec_directory, | |
57ca9855 RS |
1456 | "Directory for executables for Emacs to invoke.\n\ |
1457 | More generally, this includes any architecture-dependent files\n\ | |
1458 | that are built and installed from the Emacs distribution."); | |
e576cab4 JB |
1459 | |
1460 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
57ca9855 RS |
1461 | "Directory of machine-independent files that come with GNU Emacs.\n\ |
1462 | These are files intended for Emacs to use while it runs."); | |
80856e74 | 1463 | |
35a2f4b8 KH |
1464 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
1465 | "Directory containing the DOC file that comes with GNU Emacs.\n\ | |
1466 | This is usually the same as data-directory."); | |
1467 | ||
ed61592a JB |
1468 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
1469 | "For internal use by the build procedure only.\n\ | |
1470 | This is the name of the directory in which the build procedure installed\n\ | |
1471 | Emacs's info files; the default value for Info-default-directory-list\n\ | |
1472 | includes this."); | |
1473 | Vconfigure_info_directory = build_string (PATH_INFO); | |
1474 | ||
8abd035b RS |
1475 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
1476 | "Pattern for making names for temporary files.\n\ | |
1477 | This is used by `call-process-region'."); | |
0537ec48 | 1478 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1479 | |
80856e74 | 1480 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
e576cab4 JB |
1481 | "List of environment variables for subprocesses to inherit.\n\ |
1482 | Each element should be a string of the form ENVVARNAME=VALUE.\n\ | |
1483 | The environment which Emacs inherits is placed in this variable\n\ | |
1484 | when Emacs starts."); | |
80856e74 JB |
1485 | |
1486 | #ifndef VMS | |
1487 | defsubr (&Scall_process); | |
83fa009c | 1488 | defsubr (&Sgetenv_internal); |
986ffb24 | 1489 | #endif |
e576cab4 | 1490 | defsubr (&Scall_process_region); |
80856e74 | 1491 | } |