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; | |
382 | ||
bca78757 | 383 | if (CODING_REQUIRE_ENCODING (&argument_coding)) |
c364e618 KH |
384 | { |
385 | /* We must encode the arguments. */ | |
386 | struct gcpro gcpro1, gcpro2, gcpro3; | |
387 | ||
388 | GCPRO3 (infile, buffer, current_dir); | |
389 | for (i = 4; i < nargs; i++) | |
390 | { | |
bca78757 KH |
391 | args[i] = code_convert_string (args[i], &argument_coding, 1, 0); |
392 | setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil); | |
c364e618 KH |
393 | } |
394 | UNGCPRO; | |
395 | } | |
bca78757 KH |
396 | for (i = 4; i < nargs; i++) |
397 | new_argv[i - 3] = XSTRING (args[i])->data; | |
db54baaa | 398 | new_argv[nargs - 3] = 0; |
c364e618 | 399 | } |
db54baaa KH |
400 | else |
401 | new_argv[1] = 0; | |
80856e74 | 402 | |
7e6c2178 | 403 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 404 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
405 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
406 | else | |
407 | { | |
408 | tempfile = alloca (20); | |
409 | *tempfile = '\0'; | |
410 | } | |
411 | dostounix_filename (tempfile); | |
412 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') | |
413 | strcat (tempfile, "/"); | |
414 | strcat (tempfile, "detmp.XXX"); | |
415 | mktemp (tempfile); | |
416 | ||
417 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
418 | if (outfilefd < 0) | |
419 | { | |
68c45bf0 | 420 | emacs_close (filefd); |
6f89d28a MB |
421 | report_file_error ("Opening process output file", |
422 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 423 | } |
6f89d28a | 424 | fd[0] = filefd; |
2610078a | 425 | fd[1] = outfilefd; |
6f89d28a | 426 | #endif /* MSDOS */ |
7e6c2178 | 427 | |
052062e0 RS |
428 | #ifdef macintosh |
429 | /* Since we don't have pipes on the Mac, create a temporary file to | |
430 | hold the output of the subprocess. */ | |
431 | tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
432 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, | |
433 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
434 | ||
435 | mktemp (tempfile); | |
436 | ||
437 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
438 | if (outfilefd < 0) | |
439 | { | |
440 | close (filefd); | |
441 | report_file_error ("Opening process output file", | |
442 | Fcons (build_string (tempfile), Qnil)); | |
443 | } | |
444 | fd[0] = filefd; | |
445 | fd[1] = outfilefd; | |
446 | #endif /* macintosh */ | |
447 | ||
d50d3dc8 | 448 | if (INTEGERP (buffer)) |
68c45bf0 | 449 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
450 | else |
451 | { | |
7e6c2178 | 452 | #ifndef MSDOS |
052062e0 | 453 | #ifndef macintosh |
80856e74 | 454 | pipe (fd); |
7e6c2178 | 455 | #endif |
052062e0 | 456 | #endif |
80856e74 JB |
457 | #if 0 |
458 | /* Replaced by close_process_descs */ | |
459 | set_exclusive_use (fd[0]); | |
460 | #endif | |
461 | } | |
462 | ||
463 | { | |
464 | /* child_setup must clobber environ in systems with true vfork. | |
465 | Protect it from permanent change. */ | |
466 | register char **save_environ = environ; | |
467 | register int fd1 = fd[1]; | |
39eaa782 | 468 | int fd_error = fd1; |
80856e74 JB |
469 | |
470 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 471 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
472 | #endif |
473 | ||
474 | /* Record that we're about to create a synchronous process. */ | |
475 | synch_process_alive = 1; | |
476 | ||
5c03767e RS |
477 | /* These vars record information from process termination. |
478 | Clear them now before process can possibly terminate, | |
479 | to avoid timing error if process terminates soon. */ | |
480 | synch_process_death = 0; | |
481 | synch_process_retcode = 0; | |
482 | ||
39eaa782 | 483 | if (NILP (error_file)) |
68c45bf0 | 484 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
485 | else if (STRINGP (error_file)) |
486 | { | |
487 | #ifdef DOS_NT | |
68c45bf0 PE |
488 | fd_error = emacs_open (XSTRING (error_file)->data, |
489 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
490 | S_IREAD | S_IWRITE); | |
39eaa782 RS |
491 | #else /* not DOS_NT */ |
492 | fd_error = creat (XSTRING (error_file)->data, 0666); | |
493 | #endif /* not DOS_NT */ | |
494 | } | |
495 | ||
496 | if (fd_error < 0) | |
497 | { | |
68c45bf0 | 498 | emacs_close (filefd); |
6f89d28a | 499 | if (fd[0] != filefd) |
68c45bf0 | 500 | emacs_close (fd[0]); |
39eaa782 | 501 | if (fd1 >= 0) |
68c45bf0 | 502 | emacs_close (fd1); |
6f89d28a MB |
503 | #ifdef MSDOS |
504 | unlink (tempfile); | |
505 | #endif | |
506 | report_file_error ("Cannot redirect stderr", | |
507 | Fcons ((NILP (error_file) | |
508 | ? build_string (NULL_DEVICE) : error_file), | |
509 | Qnil)); | |
39eaa782 | 510 | } |
89e1ec1d | 511 | |
8d024345 | 512 | current_dir = ENCODE_FILE (current_dir); |
89e1ec1d | 513 | |
052062e0 RS |
514 | #ifdef macintosh |
515 | { | |
516 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
517 | a child_setup as for MSDOS and other platforms. Note that this | |
518 | code does not handle passing the environment to the synchronous | |
519 | Mac subprocess. */ | |
520 | char *infn, *outfn, *errfn, *currdn; | |
521 | ||
522 | /* close these files so subprocess can write to them */ | |
523 | close (outfilefd); | |
524 | if (fd_error != outfilefd) | |
525 | close (fd_error); | |
526 | fd1 = -1; /* No harm in closing that one! */ | |
527 | ||
528 | infn = XSTRING (infile)->data; | |
529 | outfn = tempfile; | |
530 | if (NILP (error_file)) | |
531 | errfn = NULL_DEVICE; | |
532 | else if (EQ (Qt, error_file)) | |
533 | errfn = outfn; | |
534 | else | |
535 | errfn = XSTRING (error_file)->data; | |
536 | currdn = XSTRING (current_dir)->data; | |
537 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); | |
538 | ||
539 | /* Record that the synchronous process exited and note its | |
540 | termination status. */ | |
541 | synch_process_alive = 0; | |
542 | synch_process_retcode = pid; | |
543 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 544 | { |
ca9c0567 | 545 | synchronize_system_messages_locale (); |
68c45bf0 PE |
546 | synch_process_death = strerror (errno); |
547 | } | |
052062e0 RS |
548 | |
549 | /* Since CRLF is converted to LF within `decode_coding', we can | |
550 | always open a file with binary mode. */ | |
551 | fd[0] = open (tempfile, O_BINARY); | |
552 | if (fd[0] < 0) | |
553 | { | |
554 | unlink (tempfile); | |
555 | close (filefd); | |
556 | report_file_error ("Cannot re-open temporary file", Qnil); | |
557 | } | |
558 | } | |
559 | #else /* not macintosh */ | |
2610078a | 560 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 561 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
562 | exit status, not its PID, so we assign it to `synch_process_retcode' |
563 | below. */ | |
c17c4250 EZ |
564 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
565 | 0, current_dir); | |
39eaa782 | 566 | |
2610078a KH |
567 | /* Record that the synchronous process exited and note its |
568 | termination status. */ | |
569 | synch_process_alive = 0; | |
570 | synch_process_retcode = pid; | |
571 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 572 | { |
ca9c0567 | 573 | synchronize_system_messages_locale (); |
68c45bf0 PE |
574 | synch_process_death = strerror (errno); |
575 | } | |
2610078a | 576 | |
68c45bf0 | 577 | emacs_close (outfilefd); |
2610078a | 578 | if (fd_error != outfilefd) |
68c45bf0 | 579 | emacs_close (fd_error); |
2610078a | 580 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
581 | /* Since CRLF is converted to LF within `decode_coding', we can |
582 | always open a file with binary mode. */ | |
68c45bf0 | 583 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
584 | if (fd[0] < 0) |
585 | { | |
586 | unlink (tempfile); | |
68c45bf0 | 587 | emacs_close (filefd); |
2610078a KH |
588 | report_file_error ("Cannot re-open temporary file", Qnil); |
589 | } | |
590 | #else /* not MSDOS */ | |
bad95d8f | 591 | #ifdef WINDOWSNT |
2d607244 RS |
592 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
593 | 0, current_dir); | |
bad95d8f | 594 | #else /* not WINDOWSNT */ |
80856e74 JB |
595 | pid = vfork (); |
596 | ||
597 | if (pid == 0) | |
598 | { | |
599 | if (fd[0] >= 0) | |
68c45bf0 | 600 | emacs_close (fd[0]); |
1e7963c7 RS |
601 | #ifdef HAVE_SETSID |
602 | setsid (); | |
603 | #endif | |
604 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
605 | setpgrp (); |
606 | #else | |
607 | setpgrp (pid, pid); | |
608 | #endif /* USG */ | |
2d607244 RS |
609 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
610 | 0, current_dir); | |
80856e74 | 611 | } |
bad95d8f | 612 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
613 | |
614 | /* The MSDOS case did this already. */ | |
615 | if (fd_error >= 0) | |
68c45bf0 | 616 | emacs_close (fd_error); |
2610078a | 617 | #endif /* not MSDOS */ |
052062e0 | 618 | #endif /* not macintosh */ |
80856e74 | 619 | |
80856e74 JB |
620 | environ = save_environ; |
621 | ||
6b6e798b RS |
622 | /* Close most of our fd's, but not fd[0] |
623 | since we will use that to read input from. */ | |
68c45bf0 | 624 | emacs_close (filefd); |
799abb26 | 625 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 626 | emacs_close (fd1); |
80856e74 JB |
627 | } |
628 | ||
629 | if (pid < 0) | |
630 | { | |
6b6e798b | 631 | if (fd[0] >= 0) |
68c45bf0 | 632 | emacs_close (fd[0]); |
80856e74 JB |
633 | report_file_error ("Doing vfork", Qnil); |
634 | } | |
635 | ||
d50d3dc8 | 636 | if (INTEGERP (buffer)) |
80856e74 | 637 | { |
6b6e798b | 638 | if (fd[0] >= 0) |
68c45bf0 | 639 | emacs_close (fd[0]); |
80856e74 | 640 | #ifndef subprocesses |
e576cab4 JB |
641 | /* If Emacs has been built with asynchronous subprocess support, |
642 | we don't need to do this, I think because it will then have | |
643 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
644 | wait_without_blocking (); |
645 | #endif /* subprocesses */ | |
80856e74 JB |
646 | return Qnil; |
647 | } | |
648 | ||
6b6e798b | 649 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
650 | call_process_exited = 0; |
651 | ||
052062e0 | 652 | #if defined(MSDOS) || defined(macintosh) |
7e6c2178 RS |
653 | /* MSDOS needs different cleanup information. */ |
654 | record_unwind_protect (call_process_cleanup, | |
655 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
656 | #else | |
80856e74 JB |
657 | record_unwind_protect (call_process_cleanup, |
658 | Fcons (make_number (fd[0]), make_number (pid))); | |
052062e0 | 659 | #endif /* not MSDOS and not macintosh */ |
80856e74 JB |
660 | |
661 | ||
d50d3dc8 | 662 | if (BUFFERP (buffer)) |
80856e74 JB |
663 | Fset_buffer (buffer); |
664 | ||
09494912 RS |
665 | if (NILP (buffer)) |
666 | { | |
667 | /* If BUFFER is nil, we must read process output once and then | |
668 | discard it, so setup coding system but with nil. */ | |
669 | setup_coding_system (Qnil, &process_coding); | |
670 | } | |
671 | else | |
672 | { | |
673 | Lisp_Object val, *args2; | |
674 | ||
675 | val = Qnil; | |
676 | if (!NILP (Vcoding_system_for_read)) | |
677 | val = Vcoding_system_for_read; | |
678 | else | |
679 | { | |
680 | if (EQ (coding_systems, Qt)) | |
681 | { | |
682 | int i; | |
683 | ||
684 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
685 | args2[0] = Qcall_process; | |
686 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
687 | coding_systems | |
688 | = Ffind_operation_coding_system (nargs + 1, args2); | |
689 | } | |
690 | if (CONSP (coding_systems)) | |
70949dac | 691 | val = XCAR (coding_systems); |
09494912 | 692 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 693 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
694 | else |
695 | val = Qnil; | |
696 | } | |
697 | setup_coding_system (Fcheck_coding_system (val), &process_coding); | |
698 | /* In unibyte mode, character code conversion should not take | |
699 | place but EOL conversion should. So, setup raw-text or one | |
700 | of the subsidiary according to the information just setup. */ | |
701 | if (NILP (current_buffer->enable_multibyte_characters) | |
702 | && !NILP (val)) | |
703 | setup_raw_text_coding_system (&process_coding); | |
704 | } | |
705 | ||
80856e74 JB |
706 | immediate_quit = 1; |
707 | QUIT; | |
708 | ||
709 | { | |
710 | register int nread; | |
0ad477db | 711 | int first = 1; |
6e3bfbb2 | 712 | int total_read = 0; |
321fecde | 713 | int carryover = 0; |
7a7ab107 | 714 | int display_on_the_fly = !NILP (display) && INTERACTIVE; |
05b44e90 KH |
715 | struct coding_system saved_coding; |
716 | ||
717 | saved_coding = process_coding; | |
80856e74 | 718 | |
60558b19 | 719 | while (1) |
80856e74 | 720 | { |
60558b19 RS |
721 | /* Repeatedly read until we've filled as much as possible |
722 | of the buffer size we have. But don't read | |
8e6208c5 | 723 | less than 1024--save that for the next bufferful. */ |
321fecde | 724 | nread = carryover; |
60558b19 | 725 | while (nread < bufsize - 1024) |
00fb3e95 | 726 | { |
68c45bf0 PE |
727 | int this_read = emacs_read (fd[0], bufptr + nread, |
728 | bufsize - nread); | |
60558b19 RS |
729 | |
730 | if (this_read < 0) | |
731 | goto give_up; | |
732 | ||
733 | if (this_read == 0) | |
7a7ab107 KH |
734 | { |
735 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
736 | break; | |
737 | } | |
60558b19 RS |
738 | |
739 | nread += this_read; | |
7a7ab107 | 740 | total_read += this_read; |
60558b19 | 741 | |
7a7ab107 KH |
742 | if (display_on_the_fly) |
743 | break; | |
744 | } | |
60558b19 RS |
745 | |
746 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 747 | immediate_quit = 0; |
6e3bfbb2 | 748 | |
012c6fcb | 749 | if (!NILP (buffer)) |
32d08644 | 750 | { |
bca78757 | 751 | if (! CODING_REQUIRE_DECODING (&process_coding)) |
32d08644 KH |
752 | insert (bufptr, nread); |
753 | else | |
754 | { /* We have to decode the input. */ | |
321fecde | 755 | int size = decoding_buffer_size (&process_coding, nread); |
a871dd58 | 756 | char *decoding_buf = (char *) xmalloc (size); |
32d08644 | 757 | |
321fecde KH |
758 | decode_coding (&process_coding, bufptr, decoding_buf, |
759 | nread, size); | |
7a7ab107 KH |
760 | if (display_on_the_fly |
761 | && saved_coding.type == coding_type_undecided | |
762 | && process_coding.type != coding_type_undecided) | |
763 | { | |
764 | /* We have detected some coding system. But, | |
765 | there's a possibility that the detection was | |
766 | done by insufficient data. So, we give up | |
767 | displaying on the fly. */ | |
a871dd58 | 768 | xfree (decoding_buf); |
7a7ab107 KH |
769 | display_on_the_fly = 0; |
770 | process_coding = saved_coding; | |
771 | carryover = nread; | |
772 | continue; | |
773 | } | |
321fecde KH |
774 | if (process_coding.produced > 0) |
775 | insert (decoding_buf, process_coding.produced); | |
a871dd58 | 776 | xfree (decoding_buf); |
11218c68 | 777 | carryover = nread - process_coding.consumed; |
321fecde KH |
778 | if (carryover > 0) |
779 | { | |
780 | /* As CARRYOVER should not be that large, we had | |
781 | better avoid overhead of bcopy. */ | |
782 | char *p = bufptr + process_coding.consumed; | |
783 | char *pend = p + carryover; | |
784 | char *dst = bufptr; | |
785 | ||
786 | while (p < pend) *dst++ = *p++; | |
787 | } | |
32d08644 KH |
788 | } |
789 | } | |
321fecde KH |
790 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
791 | { | |
792 | if (carryover > 0) | |
793 | insert (bufptr, carryover); | |
794 | break; | |
795 | } | |
6e3bfbb2 RS |
796 | |
797 | /* Make the buffer bigger as we continue to read more data, | |
798 | but not past 64k. */ | |
799 | if (bufsize < 64 * 1024 && total_read > 32 * bufsize) | |
800 | { | |
801 | bufsize *= 2; | |
802 | bufptr = (char *) alloca (bufsize); | |
803 | } | |
804 | ||
012c6fcb | 805 | if (!NILP (display) && INTERACTIVE) |
0ad477db RS |
806 | { |
807 | if (first) | |
808 | prepare_menu_bars (); | |
809 | first = 0; | |
810 | redisplay_preserve_echo_area (); | |
811 | } | |
80856e74 JB |
812 | immediate_quit = 1; |
813 | QUIT; | |
814 | } | |
60558b19 | 815 | give_up: ; |
80856e74 | 816 | |
bca78757 | 817 | Vlast_coding_system_used = process_coding.symbol; |
bbd29cfe | 818 | |
bca78757 KH |
819 | /* If the caller required, let the buffer inherit the |
820 | coding-system used to decode the process output. */ | |
821 | if (inherit_process_coding_system) | |
822 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
823 | make_number (total_read)); | |
3b440bb5 EZ |
824 | } |
825 | ||
80856e74 JB |
826 | /* Wait for it to terminate, unless it already has. */ |
827 | wait_for_termination (pid); | |
828 | ||
829 | immediate_quit = 0; | |
830 | ||
831 | set_buffer_internal (old); | |
832 | ||
37d54121 RS |
833 | /* Don't kill any children that the subprocess may have left behind |
834 | when exiting. */ | |
835 | call_process_exited = 1; | |
836 | ||
80856e74 JB |
837 | unbind_to (count, Qnil); |
838 | ||
80856e74 | 839 | if (synch_process_death) |
68c45bf0 PE |
840 | return code_convert_string_norecord (build_string (synch_process_death), |
841 | Vlocale_coding_system, 0); | |
80856e74 JB |
842 | return make_number (synch_process_retcode); |
843 | } | |
844 | #endif | |
845 | \f | |
9fefd2ba | 846 | static Lisp_Object |
80856e74 JB |
847 | delete_temp_file (name) |
848 | Lisp_Object name; | |
849 | { | |
2e3dc201 | 850 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 851 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 852 | internal_delete_file (name); |
80856e74 JB |
853 | } |
854 | ||
855 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
856 | 3, MANY, 0, | |
857 | "Send text from START to END to a synchronous process running PROGRAM.\n\ | |
edf496dd | 858 | The remaining arguments are optional.\n\ |
80856e74 | 859 | Delete the text if fourth arg DELETE is non-nil.\n\ |
39eaa782 | 860 | \n\ |
80856e74 JB |
861 | Insert output in BUFFER before point; t means current buffer;\n\ |
862 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
863 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
864 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
865 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
866 | STDERR-FILE may be nil (discard standard error output),\n\ | |
867 | t (mix it with ordinary output), or a file name string.\n\ | |
868 | \n\ | |
80856e74 JB |
869 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
870 | Remaining args are passed to PROGRAM at startup as command args.\n\ | |
39eaa782 RS |
871 | \n\ |
872 | If BUFFER is nil, `call-process-region' returns immediately with value nil.\n\ | |
873 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 874 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 875 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
876 | (nargs, args) |
877 | int nargs; | |
878 | register Lisp_Object *args; | |
879 | { | |
39323a7e KH |
880 | struct gcpro gcpro1; |
881 | Lisp_Object filename_string; | |
882 | register Lisp_Object start, end; | |
d3e81d0a | 883 | int count = specpdl_ptr - specpdl; |
08ee4e87 | 884 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 885 | Lisp_Object coding_systems; |
32d08644 KH |
886 | Lisp_Object val, *args2; |
887 | int i; | |
bad95d8f | 888 | #ifdef DOS_NT |
7e6c2178 | 889 | char *tempfile; |
7e6c2178 RS |
890 | char *outf = '\0'; |
891 | ||
8a52365c EZ |
892 | if ((outf = egetenv ("TMPDIR")) |
893 | || (outf = egetenv ("TMP")) | |
894 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
895 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
896 | else | |
897 | { | |
898 | tempfile = alloca (20); | |
899 | *tempfile = '\0'; | |
900 | } | |
0774fcf8 | 901 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 902 | strcat (tempfile, "/"); |
5711b547 RS |
903 | if ('/' == DIRECTORY_SEP) |
904 | dostounix_filename (tempfile); | |
905 | else | |
906 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
907 | #ifdef WINDOWSNT |
908 | strcat (tempfile, "emXXXXXX"); | |
909 | #else | |
7e6c2178 | 910 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 911 | #endif |
bad95d8f | 912 | #else /* not DOS_NT */ |
fc932ac6 | 913 | char *tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
8abd035b | 914 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, |
fc932ac6 | 915 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
bad95d8f | 916 | #endif /* not DOS_NT */ |
7e6c2178 | 917 | |
09494912 RS |
918 | coding_systems = Qt; |
919 | ||
80856e74 JB |
920 | mktemp (tempfile); |
921 | ||
922 | filename_string = build_string (tempfile); | |
39323a7e | 923 | GCPRO1 (filename_string); |
80856e74 JB |
924 | start = args[0]; |
925 | end = args[1]; | |
32d08644 | 926 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
927 | if (!NILP (Vcoding_system_for_write)) |
928 | val = Vcoding_system_for_write; | |
929 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
930 | val = Qnil; |
931 | else | |
beacaab3 | 932 | { |
91489411 RS |
933 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
934 | args2[0] = Qcall_process_region; | |
935 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
936 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
937 | if (CONSP (coding_systems)) | |
70949dac | 938 | val = XCDR (coding_systems); |
91489411 | 939 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 940 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 941 | else |
91489411 | 942 | val = Qnil; |
beacaab3 | 943 | } |
32d08644 | 944 | |
168afdaa RS |
945 | { |
946 | int count1 = specpdl_ptr - specpdl; | |
947 | ||
948 | specbind (intern ("coding-system-for-write"), val); | |
949 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); | |
950 | ||
951 | unbind_to (count1, Qnil); | |
952 | } | |
91489411 RS |
953 | |
954 | /* Note that Fcall_process takes care of binding | |
955 | coding-system-for-read. */ | |
093650fe | 956 | |
80856e74 JB |
957 | record_unwind_protect (delete_temp_file, filename_string); |
958 | ||
edf496dd | 959 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
960 | Fdelete_region (start, end); |
961 | ||
edf496dd KH |
962 | if (nargs > 3) |
963 | { | |
964 | args += 2; | |
965 | nargs -= 2; | |
966 | } | |
967 | else | |
968 | { | |
969 | args[0] = args[2]; | |
970 | nargs = 2; | |
971 | } | |
972 | args[1] = filename_string; | |
80856e74 | 973 | |
edf496dd | 974 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
975 | } |
976 | \f | |
977 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
978 | ||
dfcf069d AS |
979 | static int relocate_fd (); |
980 | ||
80856e74 JB |
981 | /* This is the last thing run in a newly forked inferior |
982 | either synchronous or asynchronous. | |
983 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
984 | Initialize inferior's priority, pgrp, connected dir and environment. | |
985 | then exec another program based on new_argv. | |
986 | ||
987 | This function may change environ for the superior process. | |
988 | Therefore, the superior process must save and restore the value | |
989 | of environ around the vfork and the call to this function. | |
990 | ||
80856e74 | 991 | SET_PGRP is nonzero if we should put the subprocess into a separate |
e576cab4 JB |
992 | process group. |
993 | ||
994 | CURRENT_DIR is an elisp string giving the path of the current | |
995 | directory the subprocess should have. Since we can't really signal | |
996 | a decent error from within the child, this should be verified as an | |
997 | executable directory by the parent. */ | |
80856e74 | 998 | |
dfcf069d | 999 | int |
e576cab4 | 1000 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1001 | int in, out, err; |
1002 | register char **new_argv; | |
80856e74 | 1003 | int set_pgrp; |
e576cab4 | 1004 | Lisp_Object current_dir; |
80856e74 | 1005 | { |
e576cab4 | 1006 | char **env; |
7fcf7f05 | 1007 | char *pwd_var; |
bad95d8f RS |
1008 | #ifdef WINDOWSNT |
1009 | int cpid; | |
4252a4bd | 1010 | HANDLE handles[3]; |
bad95d8f | 1011 | #endif /* WINDOWSNT */ |
e576cab4 | 1012 | |
33abe2d9 | 1013 | int pid = getpid (); |
80856e74 | 1014 | |
68d10241 | 1015 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 JB |
1016 | { |
1017 | extern int emacs_priority; | |
1018 | ||
68d10241 RS |
1019 | if (emacs_priority < 0) |
1020 | nice (- emacs_priority); | |
4f0b9d49 | 1021 | } |
5b633aeb | 1022 | #endif |
80856e74 JB |
1023 | |
1024 | #ifdef subprocesses | |
1025 | /* Close Emacs's descriptors that this process should not have. */ | |
1026 | close_process_descs (); | |
1027 | #endif | |
c17c4250 EZ |
1028 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1029 | we will lose if we call close_load_descs here. */ | |
1030 | #ifndef DOS_NT | |
4458cebe | 1031 | close_load_descs (); |
c17c4250 | 1032 | #endif |
80856e74 JB |
1033 | |
1034 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1035 | that do not have true vfork or that have true (stack) alloca. | |
1036 | If using vfork and C_ALLOCA it is safe because that changes | |
1037 | the superior's static variables as if the superior had done alloca | |
1038 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1039 | { |
7fcf7f05 | 1040 | register char *temp; |
e576cab4 | 1041 | register int i; |
77d78be1 | 1042 | |
fc932ac6 | 1043 | i = STRING_BYTES (XSTRING (current_dir)); |
7fcf7f05 RS |
1044 | pwd_var = (char *) alloca (i + 6); |
1045 | temp = pwd_var + 4; | |
1046 | bcopy ("PWD=", pwd_var, 4); | |
e576cab4 | 1047 | bcopy (XSTRING (current_dir)->data, temp, i); |
bad95d8f | 1048 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1049 | temp[i] = 0; |
1050 | ||
c17c4250 | 1051 | #ifndef DOS_NT |
e576cab4 JB |
1052 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1053 | the callers check the current directory before forking, this | |
1054 | should only return an error if the directory's permissions | |
1055 | are changed between the check and this chdir, but we should | |
1056 | at least check. */ | |
1057 | if (chdir (temp) < 0) | |
20b25e46 | 1058 | _exit (errno); |
b4c7684c | 1059 | #endif |
7fcf7f05 | 1060 | |
c17c4250 EZ |
1061 | #ifdef DOS_NT |
1062 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1063 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1064 | { | |
1065 | temp += 2; | |
1066 | i -= 2; | |
1067 | } | |
1068 | #endif | |
1069 | ||
7fcf7f05 | 1070 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1071 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1072 | temp[--i] = 0; |
e576cab4 | 1073 | } |
80856e74 | 1074 | |
80856e74 JB |
1075 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1076 | { | |
1077 | register Lisp_Object tem; | |
1078 | register char **new_env; | |
1079 | register int new_length; | |
1080 | ||
1081 | new_length = 0; | |
1082 | for (tem = Vprocess_environment; | |
70949dac KR |
1083 | CONSP (tem) && STRINGP (XCAR (tem)); |
1084 | tem = XCDR (tem)) | |
80856e74 JB |
1085 | new_length++; |
1086 | ||
7fcf7f05 RS |
1087 | /* new_length + 2 to include PWD and terminating 0. */ |
1088 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1089 | ||
1090 | /* If we have a PWD envvar, pass one down, | |
1091 | but with corrected value. */ | |
1092 | if (getenv ("PWD")) | |
1093 | *new_env++ = pwd_var; | |
80856e74 | 1094 | |
cd9565ba | 1095 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1096 | for (tem = Vprocess_environment; |
70949dac KR |
1097 | CONSP (tem) && STRINGP (XCAR (tem)); |
1098 | tem = XCDR (tem)) | |
cd9565ba RS |
1099 | { |
1100 | char **ep = env; | |
70949dac | 1101 | char *string = (char *) XSTRING (XCAR (tem))->data; |
cd9565ba RS |
1102 | /* See if this string duplicates any string already in the env. |
1103 | If so, don't put it in. | |
1104 | When an env var has multiple definitions, | |
1105 | we keep the definition that comes first in process-environment. */ | |
1106 | for (; ep != new_env; ep++) | |
1107 | { | |
1108 | char *p = *ep, *q = string; | |
1109 | while (1) | |
1110 | { | |
1111 | if (*q == 0) | |
1112 | /* The string is malformed; might as well drop it. */ | |
1113 | goto duplicate; | |
1114 | if (*q != *p) | |
1115 | break; | |
1116 | if (*q == '=') | |
1117 | goto duplicate; | |
1118 | p++, q++; | |
1119 | } | |
1120 | } | |
1121 | *new_env++ = string; | |
1122 | duplicate: ; | |
1123 | } | |
80856e74 JB |
1124 | *new_env = 0; |
1125 | } | |
bad95d8f RS |
1126 | #ifdef WINDOWSNT |
1127 | prepare_standard_handles (in, out, err, handles); | |
b4c7684c | 1128 | set_process_dir (XSTRING (current_dir)->data); |
bad95d8f | 1129 | #else /* not WINDOWSNT */ |
426b37ae JB |
1130 | /* Make sure that in, out, and err are not actually already in |
1131 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1132 | started with its standard in, out, or error closed, as might |
426b37ae | 1133 | happen under X. */ |
f29f9e4a RS |
1134 | { |
1135 | int oin = in, oout = out; | |
1136 | ||
1137 | /* We have to avoid relocating the same descriptor twice! */ | |
1138 | ||
1139 | in = relocate_fd (in, 3); | |
1140 | ||
1141 | if (out == oin) | |
1142 | out = in; | |
1143 | else | |
3e9367e7 | 1144 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1145 | |
1146 | if (err == oin) | |
1147 | err = in; | |
1148 | else if (err == oout) | |
1149 | err = out; | |
1150 | else | |
3e9367e7 | 1151 | err = relocate_fd (err, 3); |
f29f9e4a | 1152 | } |
426b37ae | 1153 | |
c17c4250 | 1154 | #ifndef MSDOS |
68c45bf0 PE |
1155 | emacs_close (0); |
1156 | emacs_close (1); | |
1157 | emacs_close (2); | |
80856e74 JB |
1158 | |
1159 | dup2 (in, 0); | |
1160 | dup2 (out, 1); | |
1161 | dup2 (err, 2); | |
68c45bf0 PE |
1162 | emacs_close (in); |
1163 | emacs_close (out); | |
1164 | emacs_close (err); | |
c17c4250 | 1165 | #endif /* not MSDOS */ |
bad95d8f | 1166 | #endif /* not WINDOWSNT */ |
80856e74 | 1167 | |
6b2cd868 | 1168 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1169 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1170 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1171 | #endif |
e576cab4 JB |
1172 | #else |
1173 | setpgrp (pid, pid); | |
1174 | #endif /* USG */ | |
a129418f RS |
1175 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1176 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 JB |
1177 | |
1178 | #ifdef vipc | |
1179 | something missing here; | |
1180 | #endif /* vipc */ | |
1181 | ||
c17c4250 EZ |
1182 | #ifdef MSDOS |
1183 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
1184 | if (pid == -1) | |
1185 | /* An error occurred while trying to run the subprocess. */ | |
1186 | report_file_error ("Spawning child process", Qnil); | |
1187 | return pid; | |
1188 | #else /* not MSDOS */ | |
bad95d8f RS |
1189 | #ifdef WINDOWSNT |
1190 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1191 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1192 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1193 | if (cpid == -1) |
1194 | /* An error occurred while trying to spawn the process. */ | |
1195 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1196 | return cpid; |
1197 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1198 | /* execvp does not accept an environment arg so the only way |
1199 | to pass this environment is to set environ. Our caller | |
1200 | is responsible for restoring the ambient value of environ. */ | |
1201 | environ = env; | |
1202 | execvp (new_argv[0], new_argv); | |
1203 | ||
68c45bf0 PE |
1204 | emacs_write (1, "Can't exec program: ", 20); |
1205 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1206 | emacs_write (1, "\n", 1); | |
80856e74 | 1207 | _exit (1); |
bad95d8f | 1208 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1209 | #endif /* not MSDOS */ |
80856e74 JB |
1210 | } |
1211 | ||
a3833dfe | 1212 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1213 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1214 | static int |
a3833dfe KH |
1215 | relocate_fd (fd, minfd) |
1216 | int fd, minfd; | |
426b37ae | 1217 | { |
a3833dfe | 1218 | if (fd >= minfd) |
426b37ae JB |
1219 | return fd; |
1220 | else | |
1221 | { | |
1222 | int new = dup (fd); | |
1223 | if (new == -1) | |
1224 | { | |
20c018a0 | 1225 | char *message1 = "Error while setting up child: "; |
826c56ac | 1226 | char *errmessage = strerror (errno); |
20c018a0 | 1227 | char *message2 = "\n"; |
68c45bf0 PE |
1228 | emacs_write (2, message1, strlen (message1)); |
1229 | emacs_write (2, errmessage, strlen (errmessage)); | |
1230 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1231 | _exit (1); |
1232 | } | |
1233 | /* Note that we hold the original FD open while we recurse, | |
1234 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1235 | new = relocate_fd (new, minfd); |
68c45bf0 | 1236 | emacs_close (fd); |
426b37ae JB |
1237 | return new; |
1238 | } | |
1239 | } | |
1240 | ||
012c6fcb JA |
1241 | static int |
1242 | getenv_internal (var, varlen, value, valuelen) | |
1243 | char *var; | |
1244 | int varlen; | |
1245 | char **value; | |
1246 | int *valuelen; | |
1247 | { | |
1248 | Lisp_Object scan; | |
1249 | ||
70949dac | 1250 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1251 | { |
c1350752 KH |
1252 | Lisp_Object entry; |
1253 | ||
70949dac | 1254 | entry = XCAR (scan); |
d50d3dc8 | 1255 | if (STRINGP (entry) |
fc932ac6 | 1256 | && STRING_BYTES (XSTRING (entry)) > varlen |
012c6fcb | 1257 | && XSTRING (entry)->data[varlen] == '=' |
bad95d8f RS |
1258 | #ifdef WINDOWSNT |
1259 | /* NT environment variables are case insensitive. */ | |
a9971c6d | 1260 | && ! strnicmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1261 | #else /* not WINDOWSNT */ |
a9971c6d | 1262 | && ! bcmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1263 | #endif /* not WINDOWSNT */ |
a9971c6d | 1264 | ) |
012c6fcb JA |
1265 | { |
1266 | *value = (char *) XSTRING (entry)->data + (varlen + 1); | |
fc932ac6 | 1267 | *valuelen = STRING_BYTES (XSTRING (entry)) - (varlen + 1); |
012c6fcb JA |
1268 | return 1; |
1269 | } | |
1270 | } | |
1271 | ||
1272 | return 0; | |
1273 | } | |
1274 | ||
0ad477db | 1275 | DEFUN ("getenv", Fgetenv, Sgetenv, 1, 1, 0, |
012c6fcb JA |
1276 | "Return the value of environment variable VAR, as a string.\n\ |
1277 | VAR should be a string. Value is nil if VAR is undefined in the environment.\n\ | |
1278 | This function consults the variable ``process-environment'' for its value.") | |
1279 | (var) | |
1280 | Lisp_Object var; | |
1281 | { | |
1282 | char *value; | |
1283 | int valuelen; | |
1284 | ||
1285 | CHECK_STRING (var, 0); | |
fc932ac6 | 1286 | if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)), |
012c6fcb JA |
1287 | &value, &valuelen)) |
1288 | return make_string (value, valuelen); | |
1289 | else | |
1290 | return Qnil; | |
1291 | } | |
1292 | ||
1293 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1294 | callable from C. */ |
012c6fcb JA |
1295 | char * |
1296 | egetenv (var) | |
e576cab4 | 1297 | char *var; |
012c6fcb JA |
1298 | { |
1299 | char *value; | |
1300 | int valuelen; | |
1301 | ||
1302 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1303 | return value; | |
1304 | else | |
1305 | return 0; | |
1306 | } | |
1307 | ||
80856e74 JB |
1308 | #endif /* not VMS */ |
1309 | \f | |
8de15d69 | 1310 | /* This is run before init_cmdargs. */ |
7e6c2178 | 1311 | |
dfcf069d | 1312 | void |
8de15d69 RS |
1313 | init_callproc_1 () |
1314 | { | |
1315 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1316 | char *doc_dir = egetenv ("EMACSDOC"); |
1317 | ||
8de15d69 | 1318 | Vdata_directory |
7e6c2178 | 1319 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1320 | : PATH_DATA)); |
35a2f4b8 KH |
1321 | Vdoc_directory |
1322 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1323 | : PATH_DOC)); | |
9453ea7b | 1324 | |
e576cab4 | 1325 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1326 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1327 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1328 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1329 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1330 | } |
1331 | ||
e17f7533 | 1332 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1333 | |
dfcf069d | 1334 | void |
8de15d69 RS |
1335 | init_callproc () |
1336 | { | |
1337 | char *data_dir = egetenv ("EMACSDATA"); | |
1338 | ||
1339 | register char * sh; | |
1340 | Lisp_Object tempdir; | |
1341 | ||
9cc4fad5 | 1342 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1343 | { |
05630743 RS |
1344 | /* Add to the path the lib-src subdir of the installation dir. */ |
1345 | Lisp_Object tem; | |
1346 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1347 | Vinstallation_directory); | |
bad95d8f | 1348 | #ifndef DOS_NT |
1a6640ec | 1349 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc RS |
1350 | if (NILP (Fmember (tem, Vexec_path))) |
1351 | Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil)); | |
1352 | ||
1353 | Vexec_directory = Ffile_name_as_directory (tem); | |
bad95d8f | 1354 | #endif /* not DOS_NT */ |
8de15d69 | 1355 | |
e17f7533 RS |
1356 | /* Maybe use ../etc as well as ../lib-src. */ |
1357 | if (data_dir == 0) | |
1358 | { | |
1359 | tem = Fexpand_file_name (build_string ("etc"), | |
1360 | Vinstallation_directory); | |
1361 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1362 | } |
1363 | } | |
7e933683 RS |
1364 | |
1365 | /* Look for the files that should be in etc. We don't use | |
1366 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1367 | near the executable, and they are never in the build |
7e933683 RS |
1368 | directory when that's different from the source directory. |
1369 | ||
1370 | Instead, if these files are not in the nominal place, we try the | |
1371 | source directory. */ | |
1372 | if (data_dir == 0) | |
1373 | { | |
1374 | Lisp_Object tem, tem1, newdir; | |
1375 | ||
1376 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); | |
1377 | tem1 = Ffile_exists_p (tem); | |
1378 | if (NILP (tem1)) | |
1379 | { | |
1380 | newdir = Fexpand_file_name (build_string ("../etc/"), | |
1381 | build_string (PATH_DUMPLOADSEARCH)); | |
1382 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1383 | tem1 = Ffile_exists_p (tem); | |
1384 | if (!NILP (tem1)) | |
1385 | Vdata_directory = newdir; | |
1386 | } | |
1387 | } | |
80856e74 | 1388 | |
d883eb62 RS |
1389 | #ifndef CANNOT_DUMP |
1390 | if (initialized) | |
1391 | #endif | |
1392 | { | |
1393 | tempdir = Fdirectory_file_name (Vexec_directory); | |
1394 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
1395 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", | |
1396 | Vexec_directory); | |
1397 | } | |
80856e74 | 1398 | |
e576cab4 JB |
1399 | tempdir = Fdirectory_file_name (Vdata_directory); |
1400 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
76d5c6cf RS |
1401 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1402 | Vdata_directory); | |
e576cab4 | 1403 | |
80856e74 JB |
1404 | #ifdef VMS |
1405 | Vshell_file_name = build_string ("*dcl*"); | |
1406 | #else | |
e576cab4 | 1407 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1408 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1409 | #endif | |
8abd035b RS |
1410 | |
1411 | #ifdef VMS | |
1412 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1413 | #else | |
1414 | if (getenv ("TMPDIR")) | |
1415 | { | |
1416 | char *dir = getenv ("TMPDIR"); | |
1417 | Vtemp_file_name_pattern | |
1418 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1419 | build_string (dir)); | |
1420 | } | |
1421 | else | |
1422 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1423 | #endif | |
9fefd2ba JB |
1424 | } |
1425 | ||
dfcf069d | 1426 | void |
9fefd2ba JB |
1427 | set_process_environment () |
1428 | { | |
1429 | register char **envp; | |
80856e74 | 1430 | |
80856e74 JB |
1431 | Vprocess_environment = Qnil; |
1432 | #ifndef CANNOT_DUMP | |
1433 | if (initialized) | |
1434 | #endif | |
1435 | for (envp = environ; *envp; envp++) | |
1436 | Vprocess_environment = Fcons (build_string (*envp), | |
1437 | Vprocess_environment); | |
80856e74 JB |
1438 | } |
1439 | ||
dfcf069d | 1440 | void |
80856e74 JB |
1441 | syms_of_callproc () |
1442 | { | |
bad95d8f | 1443 | #ifdef DOS_NT |
093650fe RS |
1444 | Qbuffer_file_type = intern ("buffer-file-type"); |
1445 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1446 | #endif /* DOS_NT */ |
7e6c2178 | 1447 | |
80856e74 JB |
1448 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
1449 | "*File name to load inferior shells from.\n\ | |
1450 | Initialized from the SHELL environment variable."); | |
1451 | ||
1452 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
1453 | "*List of directories to search programs to run in subprocesses.\n\ | |
1454 | Each element is a string (directory name) or nil (try default directory)."); | |
1455 | ||
1456 | DEFVAR_LISP ("exec-directory", &Vexec_directory, | |
57ca9855 RS |
1457 | "Directory for executables for Emacs to invoke.\n\ |
1458 | More generally, this includes any architecture-dependent files\n\ | |
1459 | that are built and installed from the Emacs distribution."); | |
e576cab4 JB |
1460 | |
1461 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
57ca9855 RS |
1462 | "Directory of machine-independent files that come with GNU Emacs.\n\ |
1463 | These are files intended for Emacs to use while it runs."); | |
80856e74 | 1464 | |
35a2f4b8 KH |
1465 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
1466 | "Directory containing the DOC file that comes with GNU Emacs.\n\ | |
1467 | This is usually the same as data-directory."); | |
1468 | ||
ed61592a JB |
1469 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
1470 | "For internal use by the build procedure only.\n\ | |
1471 | This is the name of the directory in which the build procedure installed\n\ | |
1472 | Emacs's info files; the default value for Info-default-directory-list\n\ | |
1473 | includes this."); | |
1474 | Vconfigure_info_directory = build_string (PATH_INFO); | |
1475 | ||
8abd035b RS |
1476 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
1477 | "Pattern for making names for temporary files.\n\ | |
1478 | This is used by `call-process-region'."); | |
0537ec48 | 1479 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1480 | |
80856e74 | 1481 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
e576cab4 JB |
1482 | "List of environment variables for subprocesses to inherit.\n\ |
1483 | Each element should be a string of the form ENVVARNAME=VALUE.\n\ | |
1484 | The environment which Emacs inherits is placed in this variable\n\ | |
1485 | when Emacs starts."); | |
80856e74 JB |
1486 | |
1487 | #ifndef VMS | |
1488 | defsubr (&Scall_process); | |
012c6fcb | 1489 | defsubr (&Sgetenv); |
986ffb24 | 1490 | #endif |
e576cab4 | 1491 | defsubr (&Scall_process_region); |
80856e74 | 1492 | } |