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; |
826c56ac | 28 | extern char *strerror (); |
426b37ae | 29 | |
80856e74 JB |
30 | /* Define SIGCHLD as an alias for SIGCLD. */ |
31 | ||
32 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
33 | #define SIGCHLD SIGCLD | |
34 | #endif /* SIGCLD */ | |
35 | ||
36 | #include <sys/types.h> | |
88a64fef | 37 | |
3cbd6585 GM |
38 | #ifdef HAVE_UNISTD_H |
39 | #include <unistd.h> | |
40 | #endif | |
41 | ||
80856e74 JB |
42 | #include <sys/file.h> |
43 | #ifdef USG5 | |
472e83fe | 44 | #define INCLUDED_FCNTL |
80856e74 JB |
45 | #include <fcntl.h> |
46 | #endif | |
47 | ||
bad95d8f RS |
48 | #ifdef WINDOWSNT |
49 | #define NOMINMAX | |
50 | #include <windows.h> | |
51 | #include <stdlib.h> /* for proper declaration of environ */ | |
52 | #include <fcntl.h> | |
489f9371 | 53 | #include "w32.h" |
bad95d8f RS |
54 | #define _P_NOWAIT 1 /* from process.h */ |
55 | #endif | |
56 | ||
7e6c2178 | 57 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
472e83fe | 58 | #define INCLUDED_FCNTL |
7e6c2178 RS |
59 | #include <fcntl.h> |
60 | #include <sys/stat.h> | |
61 | #include <sys/param.h> | |
62 | #include <errno.h> | |
63 | #endif /* MSDOS */ | |
64 | ||
80856e74 JB |
65 | #ifndef O_RDONLY |
66 | #define O_RDONLY 0 | |
67 | #endif | |
68 | ||
69 | #ifndef O_WRONLY | |
70 | #define O_WRONLY 1 | |
71 | #endif | |
72 | ||
73 | #include "lisp.h" | |
74 | #include "commands.h" | |
75 | #include "buffer.h" | |
32d08644 | 76 | #include "charset.h" |
edf496dd | 77 | #include "ccl.h" |
32d08644 | 78 | #include "coding.h" |
57bda87a | 79 | #include <epaths.h> |
80856e74 | 80 | #include "process.h" |
d177f194 | 81 | #include "syssignal.h" |
a129418f | 82 | #include "systty.h" |
80856e74 | 83 | |
5f027cea EZ |
84 | #ifdef MSDOS |
85 | #include "msdos.h" | |
86 | #endif | |
87 | ||
80856e74 JB |
88 | #ifdef VMS |
89 | extern noshare char **environ; | |
90 | #else | |
91 | extern char **environ; | |
92 | #endif | |
93 | ||
94 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
95 | ||
35a2f4b8 | 96 | Lisp_Object Vexec_path, Vexec_directory, Vdata_directory, Vdoc_directory; |
ed61592a | 97 | Lisp_Object Vconfigure_info_directory; |
8abd035b | 98 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
99 | |
100 | Lisp_Object Vshell_file_name; | |
101 | ||
80856e74 | 102 | Lisp_Object Vprocess_environment; |
80856e74 | 103 | |
bad95d8f | 104 | #ifdef DOS_NT |
093650fe | 105 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 106 | #endif /* DOS_NT */ |
093650fe | 107 | |
80856e74 JB |
108 | /* True iff we are about to fork off a synchronous process or if we |
109 | are waiting for it. */ | |
110 | int synch_process_alive; | |
111 | ||
112 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
113 | char *synch_process_death; | |
114 | ||
115 | /* If synch_process_death is zero, | |
116 | this is exit code of synchronous subprocess. */ | |
117 | int synch_process_retcode; | |
8de15d69 RS |
118 | |
119 | extern Lisp_Object Vdoc_file_name; | |
89e1ec1d | 120 | |
8d024345 | 121 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
80856e74 | 122 | \f |
37d54121 RS |
123 | /* Clean up when exiting Fcall_process. |
124 | On MSDOS, delete the temporary file on any kind of termination. | |
125 | On Unix, kill the process and any children on termination by signal. */ | |
126 | ||
127 | /* Nonzero if this is termination due to exit. */ | |
128 | static int call_process_exited; | |
129 | ||
80856e74 JB |
130 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
131 | ||
d177f194 JB |
132 | static Lisp_Object |
133 | call_process_kill (fdpid) | |
134 | Lisp_Object fdpid; | |
135 | { | |
68c45bf0 | 136 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
137 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
138 | synch_process_alive = 0; | |
139 | return Qnil; | |
140 | } | |
141 | ||
80856e74 JB |
142 | Lisp_Object |
143 | call_process_cleanup (fdpid) | |
144 | Lisp_Object fdpid; | |
145 | { | |
052062e0 | 146 | #if defined (MSDOS) || defined (macintosh) |
7e6c2178 | 147 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
148 | register Lisp_Object file; |
149 | file = Fcdr (fdpid); | |
68c45bf0 | 150 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 RS |
151 | if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) |
152 | unlink (XSTRING (file)->data); | |
052062e0 | 153 | #else /* not MSDOS and not macintosh */ |
d177f194 JB |
154 | register int pid = XFASTINT (Fcdr (fdpid)); |
155 | ||
37d54121 | 156 | if (call_process_exited) |
6b6e798b | 157 | { |
68c45bf0 | 158 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
159 | return Qnil; |
160 | } | |
37d54121 | 161 | |
d177f194 JB |
162 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
163 | { | |
164 | int count = specpdl_ptr - specpdl; | |
165 | record_unwind_protect (call_process_kill, fdpid); | |
166 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
167 | immediate_quit = 1; | |
168 | QUIT; | |
169 | wait_for_termination (pid); | |
170 | immediate_quit = 0; | |
171 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
172 | message1 ("Waiting for process to die...done"); | |
173 | } | |
80856e74 | 174 | synch_process_alive = 0; |
68c45bf0 | 175 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 176 | #endif /* not MSDOS */ |
80856e74 JB |
177 | return Qnil; |
178 | } | |
179 | ||
180 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
181 | "Call PROGRAM synchronously in separate process.\n\ | |
edf496dd | 182 | The remaining arguments are optional.\n\ |
80856e74 JB |
183 | The program's input comes from file INFILE (nil means `/dev/null').\n\ |
184 | Insert output in BUFFER before point; t means current buffer;\n\ | |
185 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
186 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
187 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
188 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
189 | STDERR-FILE may be nil (discard standard error output),\n\ | |
190 | t (mix it with ordinary output), or a file name string.\n\ | |
191 | \n\ | |
80856e74 JB |
192 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
193 | Remaining arguments are strings passed as command arguments to PROGRAM.\n\ | |
39eaa782 RS |
194 | \n\ |
195 | If BUFFER is 0, `call-process' returns immediately with value nil.\n\ | |
196 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 197 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 198 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
199 | (nargs, args) |
200 | int nargs; | |
201 | register Lisp_Object *args; | |
202 | { | |
58616e67 | 203 | Lisp_Object infile, buffer, current_dir, display, path; |
80856e74 JB |
204 | int fd[2]; |
205 | int filefd; | |
206 | register int pid; | |
6e3bfbb2 RS |
207 | char buf[16384]; |
208 | char *bufptr = buf; | |
209 | int bufsize = 16384; | |
80856e74 | 210 | int count = specpdl_ptr - specpdl; |
2d607244 | 211 | |
80856e74 JB |
212 | register unsigned char **new_argv |
213 | = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
214 | struct buffer *old = current_buffer; | |
39eaa782 RS |
215 | /* File to use for stderr in the child. |
216 | t means use same as standard output. */ | |
217 | Lisp_Object error_file; | |
7e6c2178 RS |
218 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
219 | char *outf, *tempfile; | |
220 | int outfilefd; | |
221 | #endif | |
052062e0 RS |
222 | #ifdef macintosh |
223 | char *tempfile; | |
224 | int outfilefd; | |
225 | #endif | |
80856e74 JB |
226 | #if 0 |
227 | int mask; | |
228 | #endif | |
32d08644 KH |
229 | struct coding_system process_coding; /* coding-system of process output */ |
230 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
231 | /* Set to the return value of Ffind_operation_coding_system. */ |
232 | Lisp_Object coding_systems; | |
233 | ||
234 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
235 | coding_systems = Qt; | |
32d08644 | 236 | |
80856e74 JB |
237 | CHECK_STRING (args[0], 0); |
238 | ||
39eaa782 RS |
239 | error_file = Qt; |
240 | ||
7e6c2178 RS |
241 | #ifndef subprocesses |
242 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
3ffde7d6 | 243 | if (nargs >= 3 |
09ffb8b5 | 244 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
245 | error ("Operating system cannot handle asynchronous subprocesses"); |
246 | #endif /* subprocesses */ | |
247 | ||
09494912 | 248 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
249 | { |
250 | Lisp_Object val, *args2; | |
32d08644 KH |
251 | int i; |
252 | ||
253 | /* If arguments are supplied, we may have to encode them. */ | |
254 | if (nargs >= 5) | |
255 | { | |
30d57b8e RS |
256 | int must_encode = 0; |
257 | ||
e7c1c20e RS |
258 | for (i = 4; i < nargs; i++) |
259 | CHECK_STRING (args[i], i); | |
260 | ||
a2286b5c | 261 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
262 | if (STRING_MULTIBYTE (args[i])) |
263 | must_encode = 1; | |
264 | ||
beacaab3 KH |
265 | if (!NILP (Vcoding_system_for_write)) |
266 | val = Vcoding_system_for_write; | |
30d57b8e | 267 | else if (! must_encode) |
beacaab3 KH |
268 | val = Qnil; |
269 | else | |
32d08644 KH |
270 | { |
271 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
272 | args2[0] = Qcall_process; | |
273 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 274 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 275 | if (CONSP (coding_systems)) |
70949dac | 276 | val = XCDR (coding_systems); |
776b95cb | 277 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 278 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
279 | else |
280 | val = Qnil; | |
32d08644 KH |
281 | } |
282 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); | |
283 | } | |
32d08644 KH |
284 | } |
285 | ||
e576cab4 JB |
286 | if (nargs >= 2 && ! NILP (args[1])) |
287 | { | |
288 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
289 | CHECK_STRING (infile, 1); | |
290 | } | |
80856e74 | 291 | else |
5437e9f9 | 292 | infile = build_string (NULL_DEVICE); |
80856e74 | 293 | |
e576cab4 JB |
294 | if (nargs >= 3) |
295 | { | |
39eaa782 RS |
296 | buffer = args[2]; |
297 | ||
298 | /* If BUFFER is a list, its meaning is | |
299 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
300 | if (CONSP (buffer)) | |
301 | { | |
70949dac | 302 | if (CONSP (XCDR (buffer))) |
45be8a1e | 303 | { |
a9d4f28a | 304 | Lisp_Object stderr_file; |
70949dac | 305 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
306 | |
307 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
308 | error_file = stderr_file; | |
309 | else | |
310 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
311 | } | |
312 | ||
70949dac | 313 | buffer = XCAR (buffer); |
39eaa782 | 314 | } |
044512ed | 315 | |
39eaa782 RS |
316 | if (!(EQ (buffer, Qnil) |
317 | || EQ (buffer, Qt) | |
3ffde7d6 | 318 | || INTEGERP (buffer))) |
e576cab4 | 319 | { |
39eaa782 RS |
320 | Lisp_Object spec_buffer; |
321 | spec_buffer = buffer; | |
50fe359b | 322 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
323 | /* Mention the buffer name for a better error message. */ |
324 | if (NILP (buffer)) | |
325 | CHECK_BUFFER (spec_buffer, 2); | |
e576cab4 JB |
326 | CHECK_BUFFER (buffer, 2); |
327 | } | |
328 | } | |
329 | else | |
330 | buffer = Qnil; | |
80856e74 | 331 | |
58616e67 JB |
332 | /* Make sure that the child will be able to chdir to the current |
333 | buffer's current directory, or its unhandled equivalent. We | |
334 | can't just have the child check for an error when it does the | |
335 | chdir, since it's in a vfork. | |
336 | ||
337 | We have to GCPRO around this because Fexpand_file_name, | |
338 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
339 | might call a file name handling function. The argument list is | |
340 | protected by the caller, so all we really have to worry about is | |
341 | buffer. */ | |
342 | { | |
343 | struct gcpro gcpro1, gcpro2, gcpro3; | |
344 | ||
345 | current_dir = current_buffer->directory; | |
346 | ||
347 | GCPRO3 (infile, buffer, current_dir); | |
348 | ||
c52b0b34 KH |
349 | current_dir |
350 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
351 | Qnil); | |
58616e67 JB |
352 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
353 | report_file_error ("Setting current directory", | |
354 | Fcons (current_buffer->directory, Qnil)); | |
355 | ||
356 | UNGCPRO; | |
357 | } | |
358 | ||
e576cab4 | 359 | display = nargs >= 4 ? args[3] : Qnil; |
80856e74 | 360 | |
68c45bf0 | 361 | filefd = emacs_open (XSTRING (infile)->data, O_RDONLY, 0); |
80856e74 JB |
362 | if (filefd < 0) |
363 | { | |
e576cab4 | 364 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
365 | } |
366 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
367 | { |
368 | struct gcpro gcpro1; | |
369 | ||
370 | GCPRO1 (current_dir); | |
371 | openp (Vexec_path, args[0], EXEC_SUFFIXES, &path, 1); | |
372 | UNGCPRO; | |
373 | } | |
012c6fcb | 374 | if (NILP (path)) |
80856e74 | 375 | { |
68c45bf0 | 376 | emacs_close (filefd); |
80856e74 JB |
377 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
378 | } | |
379 | new_argv[0] = XSTRING (path)->data; | |
c364e618 KH |
380 | if (nargs > 4) |
381 | { | |
382 | register int i; | |
383 | ||
c364e618 KH |
384 | if (! CODING_REQUIRE_ENCODING (&argument_coding)) |
385 | { | |
386 | for (i = 4; i < nargs; i++) | |
387 | new_argv[i - 3] = XSTRING (args[i])->data; | |
388 | } | |
389 | else | |
390 | { | |
391 | /* We must encode the arguments. */ | |
392 | struct gcpro gcpro1, gcpro2, gcpro3; | |
393 | ||
394 | GCPRO3 (infile, buffer, current_dir); | |
395 | for (i = 4; i < nargs; i++) | |
396 | { | |
397 | int size = encoding_buffer_size (&argument_coding, | |
fc932ac6 | 398 | STRING_BYTES (XSTRING (args[i]))); |
c364e618 | 399 | unsigned char *dummy1 = (unsigned char *) alloca (size); |
c364e618 KH |
400 | |
401 | /* The Irix 4.0 compiler barfs if we eliminate dummy. */ | |
402 | new_argv[i - 3] = dummy1; | |
edf496dd | 403 | argument_coding.mode |= CODING_MODE_LAST_BLOCK; |
321fecde KH |
404 | encode_coding (&argument_coding, |
405 | XSTRING (args[i])->data, | |
406 | new_argv[i - 3], | |
fc932ac6 | 407 | STRING_BYTES (XSTRING (args[i])), |
321fecde KH |
408 | size); |
409 | new_argv[i - 3][argument_coding.produced] = 0; | |
edf496dd KH |
410 | /* We have to initialize CCL program status again. */ |
411 | if (argument_coding.type == coding_type_ccl) | |
412 | setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil); | |
c364e618 KH |
413 | } |
414 | UNGCPRO; | |
415 | } | |
db54baaa | 416 | new_argv[nargs - 3] = 0; |
c364e618 | 417 | } |
db54baaa KH |
418 | else |
419 | new_argv[1] = 0; | |
80856e74 | 420 | |
7e6c2178 | 421 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 422 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
423 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
424 | else | |
425 | { | |
426 | tempfile = alloca (20); | |
427 | *tempfile = '\0'; | |
428 | } | |
429 | dostounix_filename (tempfile); | |
430 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') | |
431 | strcat (tempfile, "/"); | |
432 | strcat (tempfile, "detmp.XXX"); | |
433 | mktemp (tempfile); | |
434 | ||
435 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
436 | if (outfilefd < 0) | |
437 | { | |
68c45bf0 | 438 | emacs_close (filefd); |
6f89d28a MB |
439 | report_file_error ("Opening process output file", |
440 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 441 | } |
6f89d28a | 442 | fd[0] = filefd; |
2610078a | 443 | fd[1] = outfilefd; |
6f89d28a | 444 | #endif /* MSDOS */ |
7e6c2178 | 445 | |
052062e0 RS |
446 | #ifdef macintosh |
447 | /* Since we don't have pipes on the Mac, create a temporary file to | |
448 | hold the output of the subprocess. */ | |
449 | tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
450 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, | |
451 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
452 | ||
453 | mktemp (tempfile); | |
454 | ||
455 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
456 | if (outfilefd < 0) | |
457 | { | |
458 | close (filefd); | |
459 | report_file_error ("Opening process output file", | |
460 | Fcons (build_string (tempfile), Qnil)); | |
461 | } | |
462 | fd[0] = filefd; | |
463 | fd[1] = outfilefd; | |
464 | #endif /* macintosh */ | |
465 | ||
d50d3dc8 | 466 | if (INTEGERP (buffer)) |
68c45bf0 | 467 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
468 | else |
469 | { | |
7e6c2178 | 470 | #ifndef MSDOS |
052062e0 | 471 | #ifndef macintosh |
80856e74 | 472 | pipe (fd); |
7e6c2178 | 473 | #endif |
052062e0 | 474 | #endif |
80856e74 JB |
475 | #if 0 |
476 | /* Replaced by close_process_descs */ | |
477 | set_exclusive_use (fd[0]); | |
478 | #endif | |
479 | } | |
480 | ||
481 | { | |
482 | /* child_setup must clobber environ in systems with true vfork. | |
483 | Protect it from permanent change. */ | |
484 | register char **save_environ = environ; | |
485 | register int fd1 = fd[1]; | |
39eaa782 | 486 | int fd_error = fd1; |
80856e74 JB |
487 | |
488 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 489 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
490 | #endif |
491 | ||
492 | /* Record that we're about to create a synchronous process. */ | |
493 | synch_process_alive = 1; | |
494 | ||
5c03767e RS |
495 | /* These vars record information from process termination. |
496 | Clear them now before process can possibly terminate, | |
497 | to avoid timing error if process terminates soon. */ | |
498 | synch_process_death = 0; | |
499 | synch_process_retcode = 0; | |
500 | ||
39eaa782 | 501 | if (NILP (error_file)) |
68c45bf0 | 502 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
503 | else if (STRINGP (error_file)) |
504 | { | |
505 | #ifdef DOS_NT | |
68c45bf0 PE |
506 | fd_error = emacs_open (XSTRING (error_file)->data, |
507 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
508 | S_IREAD | S_IWRITE); | |
39eaa782 RS |
509 | #else /* not DOS_NT */ |
510 | fd_error = creat (XSTRING (error_file)->data, 0666); | |
511 | #endif /* not DOS_NT */ | |
512 | } | |
513 | ||
514 | if (fd_error < 0) | |
515 | { | |
68c45bf0 | 516 | emacs_close (filefd); |
6f89d28a | 517 | if (fd[0] != filefd) |
68c45bf0 | 518 | emacs_close (fd[0]); |
39eaa782 | 519 | if (fd1 >= 0) |
68c45bf0 | 520 | emacs_close (fd1); |
6f89d28a MB |
521 | #ifdef MSDOS |
522 | unlink (tempfile); | |
523 | #endif | |
524 | report_file_error ("Cannot redirect stderr", | |
525 | Fcons ((NILP (error_file) | |
526 | ? build_string (NULL_DEVICE) : error_file), | |
527 | Qnil)); | |
39eaa782 | 528 | } |
89e1ec1d | 529 | |
8d024345 | 530 | current_dir = ENCODE_FILE (current_dir); |
89e1ec1d | 531 | |
052062e0 RS |
532 | #ifdef macintosh |
533 | { | |
534 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
535 | a child_setup as for MSDOS and other platforms. Note that this | |
536 | code does not handle passing the environment to the synchronous | |
537 | Mac subprocess. */ | |
538 | char *infn, *outfn, *errfn, *currdn; | |
539 | ||
540 | /* close these files so subprocess can write to them */ | |
541 | close (outfilefd); | |
542 | if (fd_error != outfilefd) | |
543 | close (fd_error); | |
544 | fd1 = -1; /* No harm in closing that one! */ | |
545 | ||
546 | infn = XSTRING (infile)->data; | |
547 | outfn = tempfile; | |
548 | if (NILP (error_file)) | |
549 | errfn = NULL_DEVICE; | |
550 | else if (EQ (Qt, error_file)) | |
551 | errfn = outfn; | |
552 | else | |
553 | errfn = XSTRING (error_file)->data; | |
554 | currdn = XSTRING (current_dir)->data; | |
555 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); | |
556 | ||
557 | /* Record that the synchronous process exited and note its | |
558 | termination status. */ | |
559 | synch_process_alive = 0; | |
560 | synch_process_retcode = pid; | |
561 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 PE |
562 | { |
563 | synchronize_messages_locale (); | |
564 | synch_process_death = strerror (errno); | |
565 | } | |
052062e0 RS |
566 | |
567 | /* Since CRLF is converted to LF within `decode_coding', we can | |
568 | always open a file with binary mode. */ | |
569 | fd[0] = open (tempfile, O_BINARY); | |
570 | if (fd[0] < 0) | |
571 | { | |
572 | unlink (tempfile); | |
573 | close (filefd); | |
574 | report_file_error ("Cannot re-open temporary file", Qnil); | |
575 | } | |
576 | } | |
577 | #else /* not macintosh */ | |
2610078a | 578 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 579 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
580 | exit status, not its PID, so we assign it to `synch_process_retcode' |
581 | below. */ | |
c17c4250 EZ |
582 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
583 | 0, current_dir); | |
39eaa782 | 584 | |
2610078a KH |
585 | /* Record that the synchronous process exited and note its |
586 | termination status. */ | |
587 | synch_process_alive = 0; | |
588 | synch_process_retcode = pid; | |
589 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 PE |
590 | { |
591 | synchronize_messages_locale (); | |
592 | synch_process_death = strerror (errno); | |
593 | } | |
2610078a | 594 | |
68c45bf0 | 595 | emacs_close (outfilefd); |
2610078a | 596 | if (fd_error != outfilefd) |
68c45bf0 | 597 | emacs_close (fd_error); |
2610078a | 598 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
599 | /* Since CRLF is converted to LF within `decode_coding', we can |
600 | always open a file with binary mode. */ | |
68c45bf0 | 601 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
602 | if (fd[0] < 0) |
603 | { | |
604 | unlink (tempfile); | |
68c45bf0 | 605 | emacs_close (filefd); |
2610078a KH |
606 | report_file_error ("Cannot re-open temporary file", Qnil); |
607 | } | |
608 | #else /* not MSDOS */ | |
bad95d8f | 609 | #ifdef WINDOWSNT |
2d607244 RS |
610 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
611 | 0, current_dir); | |
bad95d8f | 612 | #else /* not WINDOWSNT */ |
80856e74 JB |
613 | pid = vfork (); |
614 | ||
615 | if (pid == 0) | |
616 | { | |
617 | if (fd[0] >= 0) | |
68c45bf0 | 618 | emacs_close (fd[0]); |
1e7963c7 RS |
619 | #ifdef HAVE_SETSID |
620 | setsid (); | |
621 | #endif | |
622 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
623 | setpgrp (); |
624 | #else | |
625 | setpgrp (pid, pid); | |
626 | #endif /* USG */ | |
2d607244 RS |
627 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
628 | 0, current_dir); | |
80856e74 | 629 | } |
bad95d8f | 630 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
631 | |
632 | /* The MSDOS case did this already. */ | |
633 | if (fd_error >= 0) | |
68c45bf0 | 634 | emacs_close (fd_error); |
2610078a | 635 | #endif /* not MSDOS */ |
052062e0 | 636 | #endif /* not macintosh */ |
80856e74 | 637 | |
80856e74 JB |
638 | environ = save_environ; |
639 | ||
6b6e798b RS |
640 | /* Close most of our fd's, but not fd[0] |
641 | since we will use that to read input from. */ | |
68c45bf0 | 642 | emacs_close (filefd); |
799abb26 | 643 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 644 | emacs_close (fd1); |
80856e74 JB |
645 | } |
646 | ||
647 | if (pid < 0) | |
648 | { | |
6b6e798b | 649 | if (fd[0] >= 0) |
68c45bf0 | 650 | emacs_close (fd[0]); |
80856e74 JB |
651 | report_file_error ("Doing vfork", Qnil); |
652 | } | |
653 | ||
d50d3dc8 | 654 | if (INTEGERP (buffer)) |
80856e74 | 655 | { |
6b6e798b | 656 | if (fd[0] >= 0) |
68c45bf0 | 657 | emacs_close (fd[0]); |
80856e74 | 658 | #ifndef subprocesses |
e576cab4 JB |
659 | /* If Emacs has been built with asynchronous subprocess support, |
660 | we don't need to do this, I think because it will then have | |
661 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
662 | wait_without_blocking (); |
663 | #endif /* subprocesses */ | |
80856e74 JB |
664 | return Qnil; |
665 | } | |
666 | ||
6b6e798b | 667 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
668 | call_process_exited = 0; |
669 | ||
052062e0 | 670 | #if defined(MSDOS) || defined(macintosh) |
7e6c2178 RS |
671 | /* MSDOS needs different cleanup information. */ |
672 | record_unwind_protect (call_process_cleanup, | |
673 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
674 | #else | |
80856e74 JB |
675 | record_unwind_protect (call_process_cleanup, |
676 | Fcons (make_number (fd[0]), make_number (pid))); | |
052062e0 | 677 | #endif /* not MSDOS and not macintosh */ |
80856e74 JB |
678 | |
679 | ||
d50d3dc8 | 680 | if (BUFFERP (buffer)) |
80856e74 JB |
681 | Fset_buffer (buffer); |
682 | ||
09494912 RS |
683 | if (NILP (buffer)) |
684 | { | |
685 | /* If BUFFER is nil, we must read process output once and then | |
686 | discard it, so setup coding system but with nil. */ | |
687 | setup_coding_system (Qnil, &process_coding); | |
688 | } | |
689 | else | |
690 | { | |
691 | Lisp_Object val, *args2; | |
692 | ||
693 | val = Qnil; | |
694 | if (!NILP (Vcoding_system_for_read)) | |
695 | val = Vcoding_system_for_read; | |
696 | else | |
697 | { | |
698 | if (EQ (coding_systems, Qt)) | |
699 | { | |
700 | int i; | |
701 | ||
702 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
703 | args2[0] = Qcall_process; | |
704 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
705 | coding_systems | |
706 | = Ffind_operation_coding_system (nargs + 1, args2); | |
707 | } | |
708 | if (CONSP (coding_systems)) | |
70949dac | 709 | val = XCAR (coding_systems); |
09494912 | 710 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 711 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
712 | else |
713 | val = Qnil; | |
714 | } | |
715 | setup_coding_system (Fcheck_coding_system (val), &process_coding); | |
716 | /* In unibyte mode, character code conversion should not take | |
717 | place but EOL conversion should. So, setup raw-text or one | |
718 | of the subsidiary according to the information just setup. */ | |
719 | if (NILP (current_buffer->enable_multibyte_characters) | |
720 | && !NILP (val)) | |
721 | setup_raw_text_coding_system (&process_coding); | |
722 | } | |
723 | ||
80856e74 JB |
724 | immediate_quit = 1; |
725 | QUIT; | |
726 | ||
727 | { | |
728 | register int nread; | |
0ad477db | 729 | int first = 1; |
6e3bfbb2 | 730 | int total_read = 0; |
321fecde | 731 | int carryover = 0; |
7a7ab107 | 732 | int display_on_the_fly = !NILP (display) && INTERACTIVE; |
05b44e90 KH |
733 | struct coding_system saved_coding; |
734 | ||
735 | saved_coding = process_coding; | |
80856e74 | 736 | |
60558b19 | 737 | while (1) |
80856e74 | 738 | { |
60558b19 RS |
739 | /* Repeatedly read until we've filled as much as possible |
740 | of the buffer size we have. But don't read | |
8e6208c5 | 741 | less than 1024--save that for the next bufferful. */ |
321fecde | 742 | nread = carryover; |
60558b19 | 743 | while (nread < bufsize - 1024) |
00fb3e95 | 744 | { |
68c45bf0 PE |
745 | int this_read = emacs_read (fd[0], bufptr + nread, |
746 | bufsize - nread); | |
60558b19 RS |
747 | |
748 | if (this_read < 0) | |
749 | goto give_up; | |
750 | ||
751 | if (this_read == 0) | |
7a7ab107 KH |
752 | { |
753 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
754 | break; | |
755 | } | |
60558b19 RS |
756 | |
757 | nread += this_read; | |
7a7ab107 | 758 | total_read += this_read; |
60558b19 | 759 | |
7a7ab107 KH |
760 | if (display_on_the_fly) |
761 | break; | |
762 | } | |
60558b19 RS |
763 | |
764 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 765 | immediate_quit = 0; |
6e3bfbb2 | 766 | |
012c6fcb | 767 | if (!NILP (buffer)) |
32d08644 KH |
768 | { |
769 | if (process_coding.type == coding_type_no_conversion) | |
770 | insert (bufptr, nread); | |
771 | else | |
772 | { /* We have to decode the input. */ | |
321fecde | 773 | int size = decoding_buffer_size (&process_coding, nread); |
a871dd58 | 774 | char *decoding_buf = (char *) xmalloc (size); |
32d08644 | 775 | |
321fecde KH |
776 | decode_coding (&process_coding, bufptr, decoding_buf, |
777 | nread, size); | |
7a7ab107 KH |
778 | if (display_on_the_fly |
779 | && saved_coding.type == coding_type_undecided | |
780 | && process_coding.type != coding_type_undecided) | |
781 | { | |
782 | /* We have detected some coding system. But, | |
783 | there's a possibility that the detection was | |
784 | done by insufficient data. So, we give up | |
785 | displaying on the fly. */ | |
a871dd58 | 786 | xfree (decoding_buf); |
7a7ab107 KH |
787 | display_on_the_fly = 0; |
788 | process_coding = saved_coding; | |
789 | carryover = nread; | |
790 | continue; | |
791 | } | |
321fecde KH |
792 | if (process_coding.produced > 0) |
793 | insert (decoding_buf, process_coding.produced); | |
a871dd58 | 794 | xfree (decoding_buf); |
11218c68 | 795 | carryover = nread - process_coding.consumed; |
321fecde KH |
796 | if (carryover > 0) |
797 | { | |
798 | /* As CARRYOVER should not be that large, we had | |
799 | better avoid overhead of bcopy. */ | |
800 | char *p = bufptr + process_coding.consumed; | |
801 | char *pend = p + carryover; | |
802 | char *dst = bufptr; | |
803 | ||
804 | while (p < pend) *dst++ = *p++; | |
805 | } | |
32d08644 KH |
806 | } |
807 | } | |
321fecde KH |
808 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
809 | { | |
810 | if (carryover > 0) | |
811 | insert (bufptr, carryover); | |
812 | break; | |
813 | } | |
6e3bfbb2 RS |
814 | |
815 | /* Make the buffer bigger as we continue to read more data, | |
816 | but not past 64k. */ | |
817 | if (bufsize < 64 * 1024 && total_read > 32 * bufsize) | |
818 | { | |
819 | bufsize *= 2; | |
820 | bufptr = (char *) alloca (bufsize); | |
821 | } | |
822 | ||
012c6fcb | 823 | if (!NILP (display) && INTERACTIVE) |
0ad477db RS |
824 | { |
825 | if (first) | |
826 | prepare_menu_bars (); | |
827 | first = 0; | |
828 | redisplay_preserve_echo_area (); | |
829 | } | |
80856e74 JB |
830 | immediate_quit = 1; |
831 | QUIT; | |
832 | } | |
60558b19 | 833 | give_up: ; |
80856e74 | 834 | |
bbd29cfe KH |
835 | Vlast_coding_system_used = process_coding.symbol; |
836 | ||
3b440bb5 EZ |
837 | /* If the caller required, let the buffer inherit the |
838 | coding-system used to decode the process output. */ | |
839 | if (inherit_process_coding_system) | |
840 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
841 | make_number (total_read)); | |
842 | } | |
843 | ||
80856e74 JB |
844 | /* Wait for it to terminate, unless it already has. */ |
845 | wait_for_termination (pid); | |
846 | ||
847 | immediate_quit = 0; | |
848 | ||
849 | set_buffer_internal (old); | |
850 | ||
37d54121 RS |
851 | /* Don't kill any children that the subprocess may have left behind |
852 | when exiting. */ | |
853 | call_process_exited = 1; | |
854 | ||
80856e74 JB |
855 | unbind_to (count, Qnil); |
856 | ||
80856e74 | 857 | if (synch_process_death) |
68c45bf0 PE |
858 | return code_convert_string_norecord (build_string (synch_process_death), |
859 | Vlocale_coding_system, 0); | |
80856e74 JB |
860 | return make_number (synch_process_retcode); |
861 | } | |
862 | #endif | |
863 | \f | |
9fefd2ba | 864 | static Lisp_Object |
80856e74 JB |
865 | delete_temp_file (name) |
866 | Lisp_Object name; | |
867 | { | |
2e3dc201 | 868 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 869 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 870 | internal_delete_file (name); |
80856e74 JB |
871 | } |
872 | ||
873 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
874 | 3, MANY, 0, | |
875 | "Send text from START to END to a synchronous process running PROGRAM.\n\ | |
edf496dd | 876 | The remaining arguments are optional.\n\ |
80856e74 | 877 | Delete the text if fourth arg DELETE is non-nil.\n\ |
39eaa782 | 878 | \n\ |
80856e74 JB |
879 | Insert output in BUFFER before point; t means current buffer;\n\ |
880 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
881 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
882 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
883 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
884 | STDERR-FILE may be nil (discard standard error output),\n\ | |
885 | t (mix it with ordinary output), or a file name string.\n\ | |
886 | \n\ | |
80856e74 JB |
887 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
888 | Remaining args are passed to PROGRAM at startup as command args.\n\ | |
39eaa782 RS |
889 | \n\ |
890 | If BUFFER is nil, `call-process-region' returns immediately with value nil.\n\ | |
891 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 892 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 893 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
894 | (nargs, args) |
895 | int nargs; | |
896 | register Lisp_Object *args; | |
897 | { | |
39323a7e KH |
898 | struct gcpro gcpro1; |
899 | Lisp_Object filename_string; | |
900 | register Lisp_Object start, end; | |
d3e81d0a | 901 | int count = specpdl_ptr - specpdl; |
08ee4e87 | 902 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 903 | Lisp_Object coding_systems; |
32d08644 KH |
904 | Lisp_Object val, *args2; |
905 | int i; | |
bad95d8f | 906 | #ifdef DOS_NT |
7e6c2178 | 907 | char *tempfile; |
7e6c2178 RS |
908 | char *outf = '\0'; |
909 | ||
8a52365c EZ |
910 | if ((outf = egetenv ("TMPDIR")) |
911 | || (outf = egetenv ("TMP")) | |
912 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
913 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
914 | else | |
915 | { | |
916 | tempfile = alloca (20); | |
917 | *tempfile = '\0'; | |
918 | } | |
0774fcf8 | 919 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 920 | strcat (tempfile, "/"); |
5711b547 RS |
921 | if ('/' == DIRECTORY_SEP) |
922 | dostounix_filename (tempfile); | |
923 | else | |
924 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
925 | #ifdef WINDOWSNT |
926 | strcat (tempfile, "emXXXXXX"); | |
927 | #else | |
7e6c2178 | 928 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 929 | #endif |
bad95d8f | 930 | #else /* not DOS_NT */ |
fc932ac6 | 931 | char *tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
8abd035b | 932 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, |
fc932ac6 | 933 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
bad95d8f | 934 | #endif /* not DOS_NT */ |
7e6c2178 | 935 | |
09494912 RS |
936 | coding_systems = Qt; |
937 | ||
80856e74 JB |
938 | mktemp (tempfile); |
939 | ||
940 | filename_string = build_string (tempfile); | |
39323a7e | 941 | GCPRO1 (filename_string); |
80856e74 JB |
942 | start = args[0]; |
943 | end = args[1]; | |
32d08644 | 944 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
945 | if (!NILP (Vcoding_system_for_write)) |
946 | val = Vcoding_system_for_write; | |
947 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
948 | val = Qnil; |
949 | else | |
beacaab3 | 950 | { |
91489411 RS |
951 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
952 | args2[0] = Qcall_process_region; | |
953 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
954 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
955 | if (CONSP (coding_systems)) | |
70949dac | 956 | val = XCDR (coding_systems); |
91489411 | 957 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 958 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 959 | else |
91489411 | 960 | val = Qnil; |
beacaab3 | 961 | } |
32d08644 | 962 | |
168afdaa RS |
963 | { |
964 | int count1 = specpdl_ptr - specpdl; | |
965 | ||
966 | specbind (intern ("coding-system-for-write"), val); | |
967 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); | |
968 | ||
969 | unbind_to (count1, Qnil); | |
970 | } | |
91489411 RS |
971 | |
972 | /* Note that Fcall_process takes care of binding | |
973 | coding-system-for-read. */ | |
093650fe | 974 | |
80856e74 JB |
975 | record_unwind_protect (delete_temp_file, filename_string); |
976 | ||
edf496dd | 977 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
978 | Fdelete_region (start, end); |
979 | ||
edf496dd KH |
980 | if (nargs > 3) |
981 | { | |
982 | args += 2; | |
983 | nargs -= 2; | |
984 | } | |
985 | else | |
986 | { | |
987 | args[0] = args[2]; | |
988 | nargs = 2; | |
989 | } | |
990 | args[1] = filename_string; | |
80856e74 | 991 | |
edf496dd | 992 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
993 | } |
994 | \f | |
995 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
996 | ||
dfcf069d AS |
997 | static int relocate_fd (); |
998 | ||
80856e74 JB |
999 | /* This is the last thing run in a newly forked inferior |
1000 | either synchronous or asynchronous. | |
1001 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1002 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1003 | then exec another program based on new_argv. | |
1004 | ||
1005 | This function may change environ for the superior process. | |
1006 | Therefore, the superior process must save and restore the value | |
1007 | of environ around the vfork and the call to this function. | |
1008 | ||
80856e74 | 1009 | SET_PGRP is nonzero if we should put the subprocess into a separate |
e576cab4 JB |
1010 | process group. |
1011 | ||
1012 | CURRENT_DIR is an elisp string giving the path of the current | |
1013 | directory the subprocess should have. Since we can't really signal | |
1014 | a decent error from within the child, this should be verified as an | |
1015 | executable directory by the parent. */ | |
80856e74 | 1016 | |
dfcf069d | 1017 | int |
e576cab4 | 1018 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1019 | int in, out, err; |
1020 | register char **new_argv; | |
80856e74 | 1021 | int set_pgrp; |
e576cab4 | 1022 | Lisp_Object current_dir; |
80856e74 | 1023 | { |
e576cab4 | 1024 | char **env; |
7fcf7f05 | 1025 | char *pwd_var; |
bad95d8f RS |
1026 | #ifdef WINDOWSNT |
1027 | int cpid; | |
4252a4bd | 1028 | HANDLE handles[3]; |
bad95d8f | 1029 | #endif /* WINDOWSNT */ |
e576cab4 | 1030 | |
33abe2d9 | 1031 | int pid = getpid (); |
80856e74 | 1032 | |
68d10241 | 1033 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 JB |
1034 | { |
1035 | extern int emacs_priority; | |
1036 | ||
68d10241 RS |
1037 | if (emacs_priority < 0) |
1038 | nice (- emacs_priority); | |
4f0b9d49 | 1039 | } |
5b633aeb | 1040 | #endif |
80856e74 JB |
1041 | |
1042 | #ifdef subprocesses | |
1043 | /* Close Emacs's descriptors that this process should not have. */ | |
1044 | close_process_descs (); | |
1045 | #endif | |
c17c4250 EZ |
1046 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1047 | we will lose if we call close_load_descs here. */ | |
1048 | #ifndef DOS_NT | |
4458cebe | 1049 | close_load_descs (); |
c17c4250 | 1050 | #endif |
80856e74 JB |
1051 | |
1052 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1053 | that do not have true vfork or that have true (stack) alloca. | |
1054 | If using vfork and C_ALLOCA it is safe because that changes | |
1055 | the superior's static variables as if the superior had done alloca | |
1056 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1057 | { |
7fcf7f05 | 1058 | register char *temp; |
e576cab4 | 1059 | register int i; |
77d78be1 | 1060 | |
fc932ac6 | 1061 | i = STRING_BYTES (XSTRING (current_dir)); |
7fcf7f05 RS |
1062 | pwd_var = (char *) alloca (i + 6); |
1063 | temp = pwd_var + 4; | |
1064 | bcopy ("PWD=", pwd_var, 4); | |
e576cab4 | 1065 | bcopy (XSTRING (current_dir)->data, temp, i); |
bad95d8f | 1066 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1067 | temp[i] = 0; |
1068 | ||
c17c4250 | 1069 | #ifndef DOS_NT |
e576cab4 JB |
1070 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1071 | the callers check the current directory before forking, this | |
1072 | should only return an error if the directory's permissions | |
1073 | are changed between the check and this chdir, but we should | |
1074 | at least check. */ | |
1075 | if (chdir (temp) < 0) | |
20b25e46 | 1076 | _exit (errno); |
b4c7684c | 1077 | #endif |
7fcf7f05 | 1078 | |
c17c4250 EZ |
1079 | #ifdef DOS_NT |
1080 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1081 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1082 | { | |
1083 | temp += 2; | |
1084 | i -= 2; | |
1085 | } | |
1086 | #endif | |
1087 | ||
7fcf7f05 | 1088 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1089 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1090 | temp[--i] = 0; |
e576cab4 | 1091 | } |
80856e74 | 1092 | |
80856e74 JB |
1093 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1094 | { | |
1095 | register Lisp_Object tem; | |
1096 | register char **new_env; | |
1097 | register int new_length; | |
1098 | ||
1099 | new_length = 0; | |
1100 | for (tem = Vprocess_environment; | |
70949dac KR |
1101 | CONSP (tem) && STRINGP (XCAR (tem)); |
1102 | tem = XCDR (tem)) | |
80856e74 JB |
1103 | new_length++; |
1104 | ||
7fcf7f05 RS |
1105 | /* new_length + 2 to include PWD and terminating 0. */ |
1106 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1107 | ||
1108 | /* If we have a PWD envvar, pass one down, | |
1109 | but with corrected value. */ | |
1110 | if (getenv ("PWD")) | |
1111 | *new_env++ = pwd_var; | |
80856e74 | 1112 | |
cd9565ba | 1113 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1114 | for (tem = Vprocess_environment; |
70949dac KR |
1115 | CONSP (tem) && STRINGP (XCAR (tem)); |
1116 | tem = XCDR (tem)) | |
cd9565ba RS |
1117 | { |
1118 | char **ep = env; | |
70949dac | 1119 | char *string = (char *) XSTRING (XCAR (tem))->data; |
cd9565ba RS |
1120 | /* See if this string duplicates any string already in the env. |
1121 | If so, don't put it in. | |
1122 | When an env var has multiple definitions, | |
1123 | we keep the definition that comes first in process-environment. */ | |
1124 | for (; ep != new_env; ep++) | |
1125 | { | |
1126 | char *p = *ep, *q = string; | |
1127 | while (1) | |
1128 | { | |
1129 | if (*q == 0) | |
1130 | /* The string is malformed; might as well drop it. */ | |
1131 | goto duplicate; | |
1132 | if (*q != *p) | |
1133 | break; | |
1134 | if (*q == '=') | |
1135 | goto duplicate; | |
1136 | p++, q++; | |
1137 | } | |
1138 | } | |
1139 | *new_env++ = string; | |
1140 | duplicate: ; | |
1141 | } | |
80856e74 JB |
1142 | *new_env = 0; |
1143 | } | |
bad95d8f RS |
1144 | #ifdef WINDOWSNT |
1145 | prepare_standard_handles (in, out, err, handles); | |
b4c7684c | 1146 | set_process_dir (XSTRING (current_dir)->data); |
bad95d8f | 1147 | #else /* not WINDOWSNT */ |
426b37ae JB |
1148 | /* Make sure that in, out, and err are not actually already in |
1149 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1150 | started with its standard in, out, or error closed, as might |
426b37ae | 1151 | happen under X. */ |
f29f9e4a RS |
1152 | { |
1153 | int oin = in, oout = out; | |
1154 | ||
1155 | /* We have to avoid relocating the same descriptor twice! */ | |
1156 | ||
1157 | in = relocate_fd (in, 3); | |
1158 | ||
1159 | if (out == oin) | |
1160 | out = in; | |
1161 | else | |
3e9367e7 | 1162 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1163 | |
1164 | if (err == oin) | |
1165 | err = in; | |
1166 | else if (err == oout) | |
1167 | err = out; | |
1168 | else | |
3e9367e7 | 1169 | err = relocate_fd (err, 3); |
f29f9e4a | 1170 | } |
426b37ae | 1171 | |
c17c4250 | 1172 | #ifndef MSDOS |
68c45bf0 PE |
1173 | emacs_close (0); |
1174 | emacs_close (1); | |
1175 | emacs_close (2); | |
80856e74 JB |
1176 | |
1177 | dup2 (in, 0); | |
1178 | dup2 (out, 1); | |
1179 | dup2 (err, 2); | |
68c45bf0 PE |
1180 | emacs_close (in); |
1181 | emacs_close (out); | |
1182 | emacs_close (err); | |
c17c4250 | 1183 | #endif /* not MSDOS */ |
bad95d8f | 1184 | #endif /* not WINDOWSNT */ |
80856e74 | 1185 | |
6b2cd868 | 1186 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1187 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1188 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1189 | #endif |
e576cab4 JB |
1190 | #else |
1191 | setpgrp (pid, pid); | |
1192 | #endif /* USG */ | |
a129418f RS |
1193 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1194 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 JB |
1195 | |
1196 | #ifdef vipc | |
1197 | something missing here; | |
1198 | #endif /* vipc */ | |
1199 | ||
c17c4250 EZ |
1200 | #ifdef MSDOS |
1201 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
1202 | if (pid == -1) | |
1203 | /* An error occurred while trying to run the subprocess. */ | |
1204 | report_file_error ("Spawning child process", Qnil); | |
1205 | return pid; | |
1206 | #else /* not MSDOS */ | |
bad95d8f RS |
1207 | #ifdef WINDOWSNT |
1208 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1209 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1210 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1211 | if (cpid == -1) |
1212 | /* An error occurred while trying to spawn the process. */ | |
1213 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1214 | return cpid; |
1215 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1216 | /* execvp does not accept an environment arg so the only way |
1217 | to pass this environment is to set environ. Our caller | |
1218 | is responsible for restoring the ambient value of environ. */ | |
1219 | environ = env; | |
1220 | execvp (new_argv[0], new_argv); | |
1221 | ||
68c45bf0 PE |
1222 | emacs_write (1, "Can't exec program: ", 20); |
1223 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1224 | emacs_write (1, "\n", 1); | |
80856e74 | 1225 | _exit (1); |
bad95d8f | 1226 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1227 | #endif /* not MSDOS */ |
80856e74 JB |
1228 | } |
1229 | ||
a3833dfe | 1230 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1231 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1232 | static int |
a3833dfe KH |
1233 | relocate_fd (fd, minfd) |
1234 | int fd, minfd; | |
426b37ae | 1235 | { |
a3833dfe | 1236 | if (fd >= minfd) |
426b37ae JB |
1237 | return fd; |
1238 | else | |
1239 | { | |
1240 | int new = dup (fd); | |
1241 | if (new == -1) | |
1242 | { | |
20c018a0 | 1243 | char *message1 = "Error while setting up child: "; |
826c56ac | 1244 | char *errmessage = strerror (errno); |
20c018a0 | 1245 | char *message2 = "\n"; |
68c45bf0 PE |
1246 | emacs_write (2, message1, strlen (message1)); |
1247 | emacs_write (2, errmessage, strlen (errmessage)); | |
1248 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1249 | _exit (1); |
1250 | } | |
1251 | /* Note that we hold the original FD open while we recurse, | |
1252 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1253 | new = relocate_fd (new, minfd); |
68c45bf0 | 1254 | emacs_close (fd); |
426b37ae JB |
1255 | return new; |
1256 | } | |
1257 | } | |
1258 | ||
012c6fcb JA |
1259 | static int |
1260 | getenv_internal (var, varlen, value, valuelen) | |
1261 | char *var; | |
1262 | int varlen; | |
1263 | char **value; | |
1264 | int *valuelen; | |
1265 | { | |
1266 | Lisp_Object scan; | |
1267 | ||
70949dac | 1268 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1269 | { |
c1350752 KH |
1270 | Lisp_Object entry; |
1271 | ||
70949dac | 1272 | entry = XCAR (scan); |
d50d3dc8 | 1273 | if (STRINGP (entry) |
fc932ac6 | 1274 | && STRING_BYTES (XSTRING (entry)) > varlen |
012c6fcb | 1275 | && XSTRING (entry)->data[varlen] == '=' |
bad95d8f RS |
1276 | #ifdef WINDOWSNT |
1277 | /* NT environment variables are case insensitive. */ | |
a9971c6d | 1278 | && ! strnicmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1279 | #else /* not WINDOWSNT */ |
a9971c6d | 1280 | && ! bcmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1281 | #endif /* not WINDOWSNT */ |
a9971c6d | 1282 | ) |
012c6fcb JA |
1283 | { |
1284 | *value = (char *) XSTRING (entry)->data + (varlen + 1); | |
fc932ac6 | 1285 | *valuelen = STRING_BYTES (XSTRING (entry)) - (varlen + 1); |
012c6fcb JA |
1286 | return 1; |
1287 | } | |
1288 | } | |
1289 | ||
1290 | return 0; | |
1291 | } | |
1292 | ||
0ad477db | 1293 | DEFUN ("getenv", Fgetenv, Sgetenv, 1, 1, 0, |
012c6fcb JA |
1294 | "Return the value of environment variable VAR, as a string.\n\ |
1295 | VAR should be a string. Value is nil if VAR is undefined in the environment.\n\ | |
1296 | This function consults the variable ``process-environment'' for its value.") | |
1297 | (var) | |
1298 | Lisp_Object var; | |
1299 | { | |
1300 | char *value; | |
1301 | int valuelen; | |
1302 | ||
1303 | CHECK_STRING (var, 0); | |
fc932ac6 | 1304 | if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)), |
012c6fcb JA |
1305 | &value, &valuelen)) |
1306 | return make_string (value, valuelen); | |
1307 | else | |
1308 | return Qnil; | |
1309 | } | |
1310 | ||
1311 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1312 | callable from C. */ |
012c6fcb JA |
1313 | char * |
1314 | egetenv (var) | |
e576cab4 | 1315 | char *var; |
012c6fcb JA |
1316 | { |
1317 | char *value; | |
1318 | int valuelen; | |
1319 | ||
1320 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1321 | return value; | |
1322 | else | |
1323 | return 0; | |
1324 | } | |
1325 | ||
80856e74 JB |
1326 | #endif /* not VMS */ |
1327 | \f | |
8de15d69 | 1328 | /* This is run before init_cmdargs. */ |
7e6c2178 | 1329 | |
dfcf069d | 1330 | void |
8de15d69 RS |
1331 | init_callproc_1 () |
1332 | { | |
1333 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1334 | char *doc_dir = egetenv ("EMACSDOC"); |
1335 | ||
8de15d69 | 1336 | Vdata_directory |
7e6c2178 | 1337 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1338 | : PATH_DATA)); |
35a2f4b8 KH |
1339 | Vdoc_directory |
1340 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1341 | : PATH_DOC)); | |
9453ea7b | 1342 | |
e576cab4 | 1343 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1344 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1345 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1346 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1347 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1348 | } |
1349 | ||
e17f7533 | 1350 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1351 | |
dfcf069d | 1352 | void |
8de15d69 RS |
1353 | init_callproc () |
1354 | { | |
1355 | char *data_dir = egetenv ("EMACSDATA"); | |
1356 | ||
1357 | register char * sh; | |
1358 | Lisp_Object tempdir; | |
1359 | ||
9cc4fad5 | 1360 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1361 | { |
05630743 RS |
1362 | /* Add to the path the lib-src subdir of the installation dir. */ |
1363 | Lisp_Object tem; | |
1364 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1365 | Vinstallation_directory); | |
bad95d8f | 1366 | #ifndef DOS_NT |
1a6640ec | 1367 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc RS |
1368 | if (NILP (Fmember (tem, Vexec_path))) |
1369 | Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil)); | |
1370 | ||
1371 | Vexec_directory = Ffile_name_as_directory (tem); | |
bad95d8f | 1372 | #endif /* not DOS_NT */ |
8de15d69 | 1373 | |
e17f7533 RS |
1374 | /* Maybe use ../etc as well as ../lib-src. */ |
1375 | if (data_dir == 0) | |
1376 | { | |
1377 | tem = Fexpand_file_name (build_string ("etc"), | |
1378 | Vinstallation_directory); | |
1379 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1380 | } |
1381 | } | |
7e933683 RS |
1382 | |
1383 | /* Look for the files that should be in etc. We don't use | |
1384 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1385 | near the executable, and they are never in the build |
7e933683 RS |
1386 | directory when that's different from the source directory. |
1387 | ||
1388 | Instead, if these files are not in the nominal place, we try the | |
1389 | source directory. */ | |
1390 | if (data_dir == 0) | |
1391 | { | |
1392 | Lisp_Object tem, tem1, newdir; | |
1393 | ||
1394 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); | |
1395 | tem1 = Ffile_exists_p (tem); | |
1396 | if (NILP (tem1)) | |
1397 | { | |
1398 | newdir = Fexpand_file_name (build_string ("../etc/"), | |
1399 | build_string (PATH_DUMPLOADSEARCH)); | |
1400 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1401 | tem1 = Ffile_exists_p (tem); | |
1402 | if (!NILP (tem1)) | |
1403 | Vdata_directory = newdir; | |
1404 | } | |
1405 | } | |
80856e74 | 1406 | |
d883eb62 RS |
1407 | #ifndef CANNOT_DUMP |
1408 | if (initialized) | |
1409 | #endif | |
1410 | { | |
1411 | tempdir = Fdirectory_file_name (Vexec_directory); | |
1412 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
1413 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", | |
1414 | Vexec_directory); | |
1415 | } | |
80856e74 | 1416 | |
e576cab4 JB |
1417 | tempdir = Fdirectory_file_name (Vdata_directory); |
1418 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
76d5c6cf RS |
1419 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1420 | Vdata_directory); | |
e576cab4 | 1421 | |
80856e74 JB |
1422 | #ifdef VMS |
1423 | Vshell_file_name = build_string ("*dcl*"); | |
1424 | #else | |
e576cab4 | 1425 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1426 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1427 | #endif | |
8abd035b RS |
1428 | |
1429 | #ifdef VMS | |
1430 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1431 | #else | |
1432 | if (getenv ("TMPDIR")) | |
1433 | { | |
1434 | char *dir = getenv ("TMPDIR"); | |
1435 | Vtemp_file_name_pattern | |
1436 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1437 | build_string (dir)); | |
1438 | } | |
1439 | else | |
1440 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1441 | #endif | |
9fefd2ba JB |
1442 | } |
1443 | ||
dfcf069d | 1444 | void |
9fefd2ba JB |
1445 | set_process_environment () |
1446 | { | |
1447 | register char **envp; | |
80856e74 | 1448 | |
80856e74 JB |
1449 | Vprocess_environment = Qnil; |
1450 | #ifndef CANNOT_DUMP | |
1451 | if (initialized) | |
1452 | #endif | |
1453 | for (envp = environ; *envp; envp++) | |
1454 | Vprocess_environment = Fcons (build_string (*envp), | |
1455 | Vprocess_environment); | |
80856e74 JB |
1456 | } |
1457 | ||
dfcf069d | 1458 | void |
80856e74 JB |
1459 | syms_of_callproc () |
1460 | { | |
bad95d8f | 1461 | #ifdef DOS_NT |
093650fe RS |
1462 | Qbuffer_file_type = intern ("buffer-file-type"); |
1463 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1464 | #endif /* DOS_NT */ |
7e6c2178 | 1465 | |
80856e74 JB |
1466 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
1467 | "*File name to load inferior shells from.\n\ | |
1468 | Initialized from the SHELL environment variable."); | |
1469 | ||
1470 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
1471 | "*List of directories to search programs to run in subprocesses.\n\ | |
1472 | Each element is a string (directory name) or nil (try default directory)."); | |
1473 | ||
1474 | DEFVAR_LISP ("exec-directory", &Vexec_directory, | |
57ca9855 RS |
1475 | "Directory for executables for Emacs to invoke.\n\ |
1476 | More generally, this includes any architecture-dependent files\n\ | |
1477 | that are built and installed from the Emacs distribution."); | |
e576cab4 JB |
1478 | |
1479 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
57ca9855 RS |
1480 | "Directory of machine-independent files that come with GNU Emacs.\n\ |
1481 | These are files intended for Emacs to use while it runs."); | |
80856e74 | 1482 | |
35a2f4b8 KH |
1483 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
1484 | "Directory containing the DOC file that comes with GNU Emacs.\n\ | |
1485 | This is usually the same as data-directory."); | |
1486 | ||
ed61592a JB |
1487 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
1488 | "For internal use by the build procedure only.\n\ | |
1489 | This is the name of the directory in which the build procedure installed\n\ | |
1490 | Emacs's info files; the default value for Info-default-directory-list\n\ | |
1491 | includes this."); | |
1492 | Vconfigure_info_directory = build_string (PATH_INFO); | |
1493 | ||
8abd035b RS |
1494 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
1495 | "Pattern for making names for temporary files.\n\ | |
1496 | This is used by `call-process-region'."); | |
0537ec48 | 1497 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1498 | |
80856e74 | 1499 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
e576cab4 JB |
1500 | "List of environment variables for subprocesses to inherit.\n\ |
1501 | Each element should be a string of the form ENVVARNAME=VALUE.\n\ | |
1502 | The environment which Emacs inherits is placed in this variable\n\ | |
1503 | when Emacs starts."); | |
80856e74 JB |
1504 | |
1505 | #ifndef VMS | |
1506 | defsubr (&Scall_process); | |
012c6fcb | 1507 | defsubr (&Sgetenv); |
986ffb24 | 1508 | #endif |
e576cab4 | 1509 | defsubr (&Scall_process_region); |
80856e74 | 1510 | } |