Commit | Line | Data |
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80856e74 | 1 | /* Synchronous subprocess invocation for GNU Emacs. |
fe12847a | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001, |
aaef169d | 3 | 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
80856e74 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
826c56ac | 9 | the Free Software Foundation; either version 2, or (at your option) |
80856e74 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
80856e74 JB |
21 | |
22 | ||
68c45bf0 | 23 | #include <config.h> |
80856e74 | 24 | #include <signal.h> |
e576cab4 | 25 | #include <errno.h> |
565620a5 | 26 | #include <stdio.h> |
80856e74 | 27 | |
03695ace | 28 | #ifndef USE_CRT_DLL |
426b37ae | 29 | extern int errno; |
03695ace | 30 | #endif |
426b37ae | 31 | |
80856e74 JB |
32 | /* Define SIGCHLD as an alias for SIGCLD. */ |
33 | ||
34 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
35 | #define SIGCHLD SIGCLD | |
36 | #endif /* SIGCLD */ | |
37 | ||
38 | #include <sys/types.h> | |
88a64fef | 39 | |
3cbd6585 GM |
40 | #ifdef HAVE_UNISTD_H |
41 | #include <unistd.h> | |
42 | #endif | |
43 | ||
80856e74 | 44 | #include <sys/file.h> |
776a24a1 | 45 | #ifdef HAVE_FCNTL_H |
472e83fe | 46 | #define INCLUDED_FCNTL |
80856e74 JB |
47 | #include <fcntl.h> |
48 | #endif | |
49 | ||
bad95d8f RS |
50 | #ifdef WINDOWSNT |
51 | #define NOMINMAX | |
52 | #include <windows.h> | |
53 | #include <stdlib.h> /* for proper declaration of environ */ | |
54 | #include <fcntl.h> | |
489f9371 | 55 | #include "w32.h" |
bad95d8f RS |
56 | #define _P_NOWAIT 1 /* from process.h */ |
57 | #endif | |
58 | ||
7e6c2178 | 59 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
472e83fe | 60 | #define INCLUDED_FCNTL |
7e6c2178 RS |
61 | #include <fcntl.h> |
62 | #include <sys/stat.h> | |
63 | #include <sys/param.h> | |
64 | #include <errno.h> | |
65 | #endif /* MSDOS */ | |
66 | ||
80856e74 JB |
67 | #ifndef O_RDONLY |
68 | #define O_RDONLY 0 | |
69 | #endif | |
70 | ||
71 | #ifndef O_WRONLY | |
72 | #define O_WRONLY 1 | |
73 | #endif | |
74 | ||
75 | #include "lisp.h" | |
76 | #include "commands.h" | |
77 | #include "buffer.h" | |
91183bfd | 78 | #include "character.h" |
edf496dd | 79 | #include "ccl.h" |
32d08644 | 80 | #include "coding.h" |
f0b950cf | 81 | #include "composite.h" |
57bda87a | 82 | #include <epaths.h> |
80856e74 | 83 | #include "process.h" |
d177f194 | 84 | #include "syssignal.h" |
a129418f | 85 | #include "systty.h" |
aba637ec | 86 | #include "blockinput.h" |
80856e74 | 87 | |
5f027cea EZ |
88 | #ifdef MSDOS |
89 | #include "msdos.h" | |
90 | #endif | |
91 | ||
80856e74 JB |
92 | #ifdef VMS |
93 | extern noshare char **environ; | |
94 | #else | |
03695ace | 95 | #ifndef USE_CRT_DLL |
80856e74 JB |
96 | extern char **environ; |
97 | #endif | |
03695ace | 98 | #endif |
80856e74 | 99 | |
f95c3f91 | 100 | #ifdef HAVE_SETPGID |
2b7e8799 | 101 | #if !defined (USG) || defined (BSD_PGRPS) |
320695d8 | 102 | #undef setpgrp |
f95c3f91 GM |
103 | #define setpgrp setpgid |
104 | #endif | |
2b7e8799 | 105 | #endif |
f95c3f91 | 106 | |
b81a1b72 SM |
107 | Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes; |
108 | Lisp_Object Vdata_directory, Vdoc_directory; | |
1e7ce61b | 109 | Lisp_Object Vconfigure_info_directory, Vshared_game_score_directory; |
8abd035b | 110 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
111 | |
112 | Lisp_Object Vshell_file_name; | |
113 | ||
80856e74 | 114 | Lisp_Object Vprocess_environment; |
80856e74 | 115 | |
bad95d8f | 116 | #ifdef DOS_NT |
093650fe | 117 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 118 | #endif /* DOS_NT */ |
093650fe | 119 | |
80856e74 JB |
120 | /* True iff we are about to fork off a synchronous process or if we |
121 | are waiting for it. */ | |
122 | int synch_process_alive; | |
123 | ||
124 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
125 | char *synch_process_death; | |
126 | ||
6b61353c KH |
127 | /* Nonzero => this is the signal number that terminated the subprocess. */ |
128 | int synch_process_termsig; | |
129 | ||
80856e74 JB |
130 | /* If synch_process_death is zero, |
131 | this is exit code of synchronous subprocess. */ | |
132 | int synch_process_retcode; | |
133 | \f | |
37d54121 RS |
134 | /* Clean up when exiting Fcall_process. |
135 | On MSDOS, delete the temporary file on any kind of termination. | |
136 | On Unix, kill the process and any children on termination by signal. */ | |
137 | ||
138 | /* Nonzero if this is termination due to exit. */ | |
139 | static int call_process_exited; | |
140 | ||
80856e74 JB |
141 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
142 | ||
d177f194 JB |
143 | static Lisp_Object |
144 | call_process_kill (fdpid) | |
145 | Lisp_Object fdpid; | |
146 | { | |
68c45bf0 | 147 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
148 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
149 | synch_process_alive = 0; | |
150 | return Qnil; | |
151 | } | |
152 | ||
80856e74 JB |
153 | Lisp_Object |
154 | call_process_cleanup (fdpid) | |
155 | Lisp_Object fdpid; | |
156 | { | |
e0f712ba | 157 | #if defined (MSDOS) || defined (MAC_OS8) |
7e6c2178 | 158 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
159 | register Lisp_Object file; |
160 | file = Fcdr (fdpid); | |
68c45bf0 | 161 | emacs_close (XFASTINT (Fcar (fdpid))); |
d5db4077 KR |
162 | if (strcmp (SDATA (file), NULL_DEVICE) != 0) |
163 | unlink (SDATA (file)); | |
e0f712ba | 164 | #else /* not MSDOS and not MAC_OS8 */ |
d177f194 JB |
165 | register int pid = XFASTINT (Fcdr (fdpid)); |
166 | ||
37d54121 | 167 | if (call_process_exited) |
6b6e798b | 168 | { |
68c45bf0 | 169 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
170 | return Qnil; |
171 | } | |
37d54121 | 172 | |
d177f194 JB |
173 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
174 | { | |
aed13378 | 175 | int count = SPECPDL_INDEX (); |
d177f194 JB |
176 | record_unwind_protect (call_process_kill, fdpid); |
177 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
178 | immediate_quit = 1; | |
179 | QUIT; | |
180 | wait_for_termination (pid); | |
181 | immediate_quit = 0; | |
182 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
183 | message1 ("Waiting for process to die...done"); | |
184 | } | |
80856e74 | 185 | synch_process_alive = 0; |
68c45bf0 | 186 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 187 | #endif /* not MSDOS */ |
80856e74 JB |
188 | return Qnil; |
189 | } | |
190 | ||
191 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
fdb82f93 PJ |
192 | doc: /* Call PROGRAM synchronously in separate process. |
193 | The remaining arguments are optional. | |
194 | The program's input comes from file INFILE (nil means `/dev/null'). | |
195 | Insert output in BUFFER before point; t means current buffer; | |
196 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
197 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
198 | REAL-BUFFER says what to do with standard output, as above, | |
199 | while STDERR-FILE says what to do with standard error in the child. | |
200 | STDERR-FILE may be nil (discard standard error output), | |
201 | t (mix it with ordinary output), or a file name string. | |
202 | ||
203 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
204 | Remaining arguments are strings passed as command arguments to PROGRAM. | |
205 | ||
206 | If BUFFER is 0, `call-process' returns immediately with value nil. | |
207 | Otherwise it waits for PROGRAM to terminate | |
208 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
209 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
210 | ||
211 | usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 212 | (nargs, args) |
80856e74 JB |
213 | int nargs; |
214 | register Lisp_Object *args; | |
215 | { | |
0aa2630f KS |
216 | Lisp_Object infile, buffer, current_dir, path; |
217 | int display_p; | |
80856e74 JB |
218 | int fd[2]; |
219 | int filefd; | |
220 | register int pid; | |
4da256b1 KS |
221 | #define CALLPROC_BUFFER_SIZE_MIN (16 * 1024) |
222 | #define CALLPROC_BUFFER_SIZE_MAX (4 * CALLPROC_BUFFER_SIZE_MIN) | |
223 | char buf[CALLPROC_BUFFER_SIZE_MAX]; | |
224 | int bufsize = CALLPROC_BUFFER_SIZE_MIN; | |
aed13378 | 225 | int count = SPECPDL_INDEX (); |
2d607244 | 226 | |
4d3b07fd KR |
227 | register const unsigned char **new_argv |
228 | = (const unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
80856e74 | 229 | struct buffer *old = current_buffer; |
39eaa782 RS |
230 | /* File to use for stderr in the child. |
231 | t means use same as standard output. */ | |
232 | Lisp_Object error_file; | |
7e6c2178 RS |
233 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
234 | char *outf, *tempfile; | |
235 | int outfilefd; | |
236 | #endif | |
e0f712ba | 237 | #ifdef MAC_OS8 |
052062e0 RS |
238 | char *tempfile; |
239 | int outfilefd; | |
240 | #endif | |
80856e74 JB |
241 | #if 0 |
242 | int mask; | |
243 | #endif | |
32d08644 KH |
244 | struct coding_system process_coding; /* coding-system of process output */ |
245 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
246 | /* Set to the return value of Ffind_operation_coding_system. */ |
247 | Lisp_Object coding_systems; | |
248 | ||
249 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
250 | coding_systems = Qt; | |
32d08644 | 251 | |
b7826503 | 252 | CHECK_STRING (args[0]); |
80856e74 | 253 | |
39eaa782 RS |
254 | error_file = Qt; |
255 | ||
7e6c2178 RS |
256 | #ifndef subprocesses |
257 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
177c0ea7 | 258 | if (nargs >= 3 |
09ffb8b5 | 259 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
260 | error ("Operating system cannot handle asynchronous subprocesses"); |
261 | #endif /* subprocesses */ | |
262 | ||
09494912 | 263 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
264 | { |
265 | Lisp_Object val, *args2; | |
32d08644 KH |
266 | int i; |
267 | ||
268 | /* If arguments are supplied, we may have to encode them. */ | |
269 | if (nargs >= 5) | |
270 | { | |
30d57b8e RS |
271 | int must_encode = 0; |
272 | ||
e7c1c20e | 273 | for (i = 4; i < nargs; i++) |
b7826503 | 274 | CHECK_STRING (args[i]); |
e7c1c20e | 275 | |
a2286b5c | 276 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
277 | if (STRING_MULTIBYTE (args[i])) |
278 | must_encode = 1; | |
279 | ||
beacaab3 KH |
280 | if (!NILP (Vcoding_system_for_write)) |
281 | val = Vcoding_system_for_write; | |
30d57b8e | 282 | else if (! must_encode) |
beacaab3 KH |
283 | val = Qnil; |
284 | else | |
32d08644 KH |
285 | { |
286 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
287 | args2[0] = Qcall_process; | |
288 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 289 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 290 | if (CONSP (coding_systems)) |
70949dac | 291 | val = XCDR (coding_systems); |
776b95cb | 292 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 293 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
294 | else |
295 | val = Qnil; | |
32d08644 | 296 | } |
b4413d9f | 297 | val = coding_inherit_eol_type (val, Qnil); |
32d08644 KH |
298 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); |
299 | } | |
32d08644 KH |
300 | } |
301 | ||
e576cab4 JB |
302 | if (nargs >= 2 && ! NILP (args[1])) |
303 | { | |
304 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
b7826503 | 305 | CHECK_STRING (infile); |
e576cab4 | 306 | } |
80856e74 | 307 | else |
5437e9f9 | 308 | infile = build_string (NULL_DEVICE); |
80856e74 | 309 | |
e576cab4 JB |
310 | if (nargs >= 3) |
311 | { | |
39eaa782 RS |
312 | buffer = args[2]; |
313 | ||
314 | /* If BUFFER is a list, its meaning is | |
315 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
316 | if (CONSP (buffer)) | |
317 | { | |
70949dac | 318 | if (CONSP (XCDR (buffer))) |
45be8a1e | 319 | { |
a9d4f28a | 320 | Lisp_Object stderr_file; |
70949dac | 321 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
322 | |
323 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
324 | error_file = stderr_file; | |
325 | else | |
326 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
327 | } | |
328 | ||
70949dac | 329 | buffer = XCAR (buffer); |
39eaa782 | 330 | } |
044512ed | 331 | |
39eaa782 RS |
332 | if (!(EQ (buffer, Qnil) |
333 | || EQ (buffer, Qt) | |
3ffde7d6 | 334 | || INTEGERP (buffer))) |
e576cab4 | 335 | { |
39eaa782 RS |
336 | Lisp_Object spec_buffer; |
337 | spec_buffer = buffer; | |
50fe359b | 338 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
339 | /* Mention the buffer name for a better error message. */ |
340 | if (NILP (buffer)) | |
b7826503 PJ |
341 | CHECK_BUFFER (spec_buffer); |
342 | CHECK_BUFFER (buffer); | |
e576cab4 JB |
343 | } |
344 | } | |
177c0ea7 | 345 | else |
e576cab4 | 346 | buffer = Qnil; |
80856e74 | 347 | |
58616e67 JB |
348 | /* Make sure that the child will be able to chdir to the current |
349 | buffer's current directory, or its unhandled equivalent. We | |
350 | can't just have the child check for an error when it does the | |
351 | chdir, since it's in a vfork. | |
352 | ||
353 | We have to GCPRO around this because Fexpand_file_name, | |
354 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
355 | might call a file name handling function. The argument list is | |
356 | protected by the caller, so all we really have to worry about is | |
357 | buffer. */ | |
358 | { | |
34b87689 | 359 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
58616e67 JB |
360 | |
361 | current_dir = current_buffer->directory; | |
362 | ||
34b87689 | 363 | GCPRO4 (infile, buffer, current_dir, error_file); |
58616e67 | 364 | |
c52b0b34 KH |
365 | current_dir |
366 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
367 | Qnil); | |
58616e67 JB |
368 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
369 | report_file_error ("Setting current directory", | |
370 | Fcons (current_buffer->directory, Qnil)); | |
371 | ||
34b87689 KH |
372 | if (STRING_MULTIBYTE (infile)) |
373 | infile = ENCODE_FILE (infile); | |
374 | if (STRING_MULTIBYTE (current_dir)) | |
375 | current_dir = ENCODE_FILE (current_dir); | |
376 | if (STRINGP (error_file) && STRING_MULTIBYTE (error_file)) | |
377 | error_file = ENCODE_FILE (error_file); | |
58616e67 JB |
378 | UNGCPRO; |
379 | } | |
380 | ||
0aa2630f | 381 | display_p = INTERACTIVE && nargs >= 4 && !NILP (args[3]); |
80856e74 | 382 | |
d5db4077 | 383 | filefd = emacs_open (SDATA (infile), O_RDONLY, 0); |
80856e74 JB |
384 | if (filefd < 0) |
385 | { | |
34b87689 | 386 | infile = DECODE_FILE (infile); |
e576cab4 | 387 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
388 | } |
389 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
390 | { |
391 | struct gcpro gcpro1; | |
392 | ||
393 | GCPRO1 (current_dir); | |
5c150961 | 394 | openp (Vexec_path, args[0], Vexec_suffixes, &path, make_number (X_OK)); |
c52b0b34 KH |
395 | UNGCPRO; |
396 | } | |
012c6fcb | 397 | if (NILP (path)) |
80856e74 | 398 | { |
68c45bf0 | 399 | emacs_close (filefd); |
80856e74 JB |
400 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
401 | } | |
8ee8f447 RS |
402 | |
403 | /* If program file name starts with /: for quoting a magic name, | |
404 | discard that. */ | |
405 | if (SBYTES (path) > 2 && SREF (path, 0) == '/' | |
406 | && SREF (path, 1) == ':') | |
407 | path = Fsubstring (path, make_number (2), Qnil); | |
408 | ||
d5db4077 | 409 | new_argv[0] = SDATA (path); |
c364e618 KH |
410 | if (nargs > 4) |
411 | { | |
412 | register int i; | |
c5bfa12b | 413 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 414 | |
c5bfa12b KH |
415 | GCPRO3 (infile, buffer, current_dir); |
416 | argument_coding.dst_multibyte = 0; | |
417 | for (i = 4; i < nargs; i++) | |
c364e618 | 418 | { |
c5bfa12b KH |
419 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
420 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
91183bfd KH |
421 | /* We must encode this argument. */ |
422 | args[i] = encode_coding_string (&argument_coding, args[i], 1); | |
d5db4077 | 423 | new_argv[i - 3] = SDATA (args[i]); |
c364e618 | 424 | } |
c5bfa12b | 425 | UNGCPRO; |
db54baaa | 426 | new_argv[nargs - 3] = 0; |
c364e618 | 427 | } |
db54baaa KH |
428 | else |
429 | new_argv[1] = 0; | |
80856e74 | 430 | |
7e6c2178 | 431 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 432 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
433 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
434 | else | |
435 | { | |
436 | tempfile = alloca (20); | |
437 | *tempfile = '\0'; | |
438 | } | |
439 | dostounix_filename (tempfile); | |
177c0ea7 | 440 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') |
7e6c2178 RS |
441 | strcat (tempfile, "/"); |
442 | strcat (tempfile, "detmp.XXX"); | |
443 | mktemp (tempfile); | |
444 | ||
445 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
446 | if (outfilefd < 0) | |
447 | { | |
68c45bf0 | 448 | emacs_close (filefd); |
6f89d28a MB |
449 | report_file_error ("Opening process output file", |
450 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 451 | } |
6f89d28a | 452 | fd[0] = filefd; |
2610078a | 453 | fd[1] = outfilefd; |
6f89d28a | 454 | #endif /* MSDOS */ |
7e6c2178 | 455 | |
e0f712ba | 456 | #ifdef MAC_OS8 |
052062e0 RS |
457 | /* Since we don't have pipes on the Mac, create a temporary file to |
458 | hold the output of the subprocess. */ | |
d5db4077 KR |
459 | tempfile = (char *) alloca (SBYTES (Vtemp_file_name_pattern) + 1); |
460 | bcopy (SDATA (Vtemp_file_name_pattern), tempfile, | |
461 | SBYTES (Vtemp_file_name_pattern) + 1); | |
052062e0 RS |
462 | |
463 | mktemp (tempfile); | |
464 | ||
465 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
466 | if (outfilefd < 0) | |
467 | { | |
468 | close (filefd); | |
469 | report_file_error ("Opening process output file", | |
470 | Fcons (build_string (tempfile), Qnil)); | |
471 | } | |
472 | fd[0] = filefd; | |
473 | fd[1] = outfilefd; | |
e0f712ba | 474 | #endif /* MAC_OS8 */ |
052062e0 | 475 | |
d50d3dc8 | 476 | if (INTEGERP (buffer)) |
68c45bf0 | 477 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
478 | else |
479 | { | |
7e6c2178 | 480 | #ifndef MSDOS |
e0f712ba | 481 | #ifndef MAC_OS8 |
db92b288 GM |
482 | errno = 0; |
483 | if (pipe (fd) == -1) | |
484 | { | |
485 | emacs_close (filefd); | |
486 | report_file_error ("Creating process pipe", Qnil); | |
487 | } | |
7e6c2178 | 488 | #endif |
052062e0 | 489 | #endif |
80856e74 JB |
490 | #if 0 |
491 | /* Replaced by close_process_descs */ | |
492 | set_exclusive_use (fd[0]); | |
493 | #endif | |
494 | } | |
495 | ||
496 | { | |
497 | /* child_setup must clobber environ in systems with true vfork. | |
498 | Protect it from permanent change. */ | |
499 | register char **save_environ = environ; | |
500 | register int fd1 = fd[1]; | |
39eaa782 | 501 | int fd_error = fd1; |
80856e74 JB |
502 | |
503 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 504 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
505 | #endif |
506 | ||
507 | /* Record that we're about to create a synchronous process. */ | |
508 | synch_process_alive = 1; | |
509 | ||
5c03767e RS |
510 | /* These vars record information from process termination. |
511 | Clear them now before process can possibly terminate, | |
512 | to avoid timing error if process terminates soon. */ | |
513 | synch_process_death = 0; | |
514 | synch_process_retcode = 0; | |
6b61353c | 515 | synch_process_termsig = 0; |
5c03767e | 516 | |
39eaa782 | 517 | if (NILP (error_file)) |
68c45bf0 | 518 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
519 | else if (STRINGP (error_file)) |
520 | { | |
521 | #ifdef DOS_NT | |
d5db4077 | 522 | fd_error = emacs_open (SDATA (error_file), |
68c45bf0 PE |
523 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
524 | S_IREAD | S_IWRITE); | |
39eaa782 | 525 | #else /* not DOS_NT */ |
d5db4077 | 526 | fd_error = creat (SDATA (error_file), 0666); |
39eaa782 RS |
527 | #endif /* not DOS_NT */ |
528 | } | |
529 | ||
530 | if (fd_error < 0) | |
531 | { | |
68c45bf0 | 532 | emacs_close (filefd); |
6f89d28a | 533 | if (fd[0] != filefd) |
68c45bf0 | 534 | emacs_close (fd[0]); |
39eaa782 | 535 | if (fd1 >= 0) |
68c45bf0 | 536 | emacs_close (fd1); |
6f89d28a MB |
537 | #ifdef MSDOS |
538 | unlink (tempfile); | |
539 | #endif | |
34b87689 KH |
540 | if (NILP (error_file)) |
541 | error_file = build_string (NULL_DEVICE); | |
542 | else if (STRINGP (error_file)) | |
543 | error_file = DECODE_FILE (error_file); | |
544 | report_file_error ("Cannot redirect stderr", Fcons (error_file, Qnil)); | |
39eaa782 | 545 | } |
89e1ec1d | 546 | |
e0f712ba | 547 | #ifdef MAC_OS8 |
052062e0 RS |
548 | { |
549 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
550 | a child_setup as for MSDOS and other platforms. Note that this | |
551 | code does not handle passing the environment to the synchronous | |
552 | Mac subprocess. */ | |
553 | char *infn, *outfn, *errfn, *currdn; | |
177c0ea7 | 554 | |
052062e0 RS |
555 | /* close these files so subprocess can write to them */ |
556 | close (outfilefd); | |
557 | if (fd_error != outfilefd) | |
558 | close (fd_error); | |
559 | fd1 = -1; /* No harm in closing that one! */ | |
560 | ||
d5db4077 | 561 | infn = SDATA (infile); |
052062e0 RS |
562 | outfn = tempfile; |
563 | if (NILP (error_file)) | |
564 | errfn = NULL_DEVICE; | |
565 | else if (EQ (Qt, error_file)) | |
566 | errfn = outfn; | |
567 | else | |
d5db4077 KR |
568 | errfn = SDATA (error_file); |
569 | currdn = SDATA (current_dir); | |
052062e0 RS |
570 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); |
571 | ||
572 | /* Record that the synchronous process exited and note its | |
573 | termination status. */ | |
574 | synch_process_alive = 0; | |
575 | synch_process_retcode = pid; | |
576 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 577 | { |
ca9c0567 | 578 | synchronize_system_messages_locale (); |
68c45bf0 PE |
579 | synch_process_death = strerror (errno); |
580 | } | |
052062e0 RS |
581 | |
582 | /* Since CRLF is converted to LF within `decode_coding', we can | |
583 | always open a file with binary mode. */ | |
584 | fd[0] = open (tempfile, O_BINARY); | |
585 | if (fd[0] < 0) | |
586 | { | |
587 | unlink (tempfile); | |
588 | close (filefd); | |
589 | report_file_error ("Cannot re-open temporary file", Qnil); | |
590 | } | |
591 | } | |
e0f712ba | 592 | #else /* not MAC_OS8 */ |
2610078a | 593 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 594 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
595 | exit status, not its PID, so we assign it to `synch_process_retcode' |
596 | below. */ | |
c17c4250 EZ |
597 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
598 | 0, current_dir); | |
39eaa782 | 599 | |
2610078a KH |
600 | /* Record that the synchronous process exited and note its |
601 | termination status. */ | |
602 | synch_process_alive = 0; | |
603 | synch_process_retcode = pid; | |
604 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 605 | { |
ca9c0567 | 606 | synchronize_system_messages_locale (); |
68c45bf0 PE |
607 | synch_process_death = strerror (errno); |
608 | } | |
2610078a | 609 | |
68c45bf0 | 610 | emacs_close (outfilefd); |
2610078a | 611 | if (fd_error != outfilefd) |
68c45bf0 | 612 | emacs_close (fd_error); |
2610078a | 613 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
614 | /* Since CRLF is converted to LF within `decode_coding', we can |
615 | always open a file with binary mode. */ | |
68c45bf0 | 616 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
617 | if (fd[0] < 0) |
618 | { | |
619 | unlink (tempfile); | |
68c45bf0 | 620 | emacs_close (filefd); |
2610078a KH |
621 | report_file_error ("Cannot re-open temporary file", Qnil); |
622 | } | |
623 | #else /* not MSDOS */ | |
bad95d8f | 624 | #ifdef WINDOWSNT |
2d607244 RS |
625 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
626 | 0, current_dir); | |
bad95d8f | 627 | #else /* not WINDOWSNT */ |
aba637ec KS |
628 | BLOCK_INPUT; |
629 | ||
80856e74 JB |
630 | pid = vfork (); |
631 | ||
632 | if (pid == 0) | |
633 | { | |
634 | if (fd[0] >= 0) | |
68c45bf0 | 635 | emacs_close (fd[0]); |
1e7963c7 RS |
636 | #ifdef HAVE_SETSID |
637 | setsid (); | |
638 | #endif | |
639 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
640 | setpgrp (); |
641 | #else | |
642 | setpgrp (pid, pid); | |
643 | #endif /* USG */ | |
2d607244 RS |
644 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
645 | 0, current_dir); | |
80856e74 | 646 | } |
aba637ec KS |
647 | |
648 | UNBLOCK_INPUT; | |
bad95d8f | 649 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
650 | |
651 | /* The MSDOS case did this already. */ | |
652 | if (fd_error >= 0) | |
68c45bf0 | 653 | emacs_close (fd_error); |
2610078a | 654 | #endif /* not MSDOS */ |
e0f712ba | 655 | #endif /* not MAC_OS8 */ |
80856e74 | 656 | |
80856e74 JB |
657 | environ = save_environ; |
658 | ||
6b6e798b RS |
659 | /* Close most of our fd's, but not fd[0] |
660 | since we will use that to read input from. */ | |
68c45bf0 | 661 | emacs_close (filefd); |
799abb26 | 662 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 663 | emacs_close (fd1); |
80856e74 JB |
664 | } |
665 | ||
666 | if (pid < 0) | |
667 | { | |
6b6e798b | 668 | if (fd[0] >= 0) |
68c45bf0 | 669 | emacs_close (fd[0]); |
80856e74 JB |
670 | report_file_error ("Doing vfork", Qnil); |
671 | } | |
672 | ||
d50d3dc8 | 673 | if (INTEGERP (buffer)) |
80856e74 | 674 | { |
6b6e798b | 675 | if (fd[0] >= 0) |
68c45bf0 | 676 | emacs_close (fd[0]); |
80856e74 | 677 | #ifndef subprocesses |
e576cab4 JB |
678 | /* If Emacs has been built with asynchronous subprocess support, |
679 | we don't need to do this, I think because it will then have | |
680 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
681 | wait_without_blocking (); |
682 | #endif /* subprocesses */ | |
80856e74 JB |
683 | return Qnil; |
684 | } | |
685 | ||
6b6e798b | 686 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
687 | call_process_exited = 0; |
688 | ||
e0f712ba | 689 | #if defined(MSDOS) || defined(MAC_OS8) |
7e6c2178 RS |
690 | /* MSDOS needs different cleanup information. */ |
691 | record_unwind_protect (call_process_cleanup, | |
692 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
693 | #else | |
80856e74 JB |
694 | record_unwind_protect (call_process_cleanup, |
695 | Fcons (make_number (fd[0]), make_number (pid))); | |
e0f712ba | 696 | #endif /* not MSDOS and not MAC_OS8 */ |
80856e74 JB |
697 | |
698 | ||
d50d3dc8 | 699 | if (BUFFERP (buffer)) |
80856e74 JB |
700 | Fset_buffer (buffer); |
701 | ||
09494912 RS |
702 | if (NILP (buffer)) |
703 | { | |
704 | /* If BUFFER is nil, we must read process output once and then | |
705 | discard it, so setup coding system but with nil. */ | |
706 | setup_coding_system (Qnil, &process_coding); | |
707 | } | |
708 | else | |
709 | { | |
710 | Lisp_Object val, *args2; | |
711 | ||
712 | val = Qnil; | |
713 | if (!NILP (Vcoding_system_for_read)) | |
714 | val = Vcoding_system_for_read; | |
715 | else | |
716 | { | |
717 | if (EQ (coding_systems, Qt)) | |
718 | { | |
719 | int i; | |
720 | ||
721 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
722 | args2[0] = Qcall_process; | |
723 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
724 | coding_systems | |
725 | = Ffind_operation_coding_system (nargs + 1, args2); | |
726 | } | |
727 | if (CONSP (coding_systems)) | |
70949dac | 728 | val = XCAR (coding_systems); |
09494912 | 729 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 730 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
731 | else |
732 | val = Qnil; | |
733 | } | |
91183bfd | 734 | Fcheck_coding_system (val); |
09494912 RS |
735 | /* In unibyte mode, character code conversion should not take |
736 | place but EOL conversion should. So, setup raw-text or one | |
737 | of the subsidiary according to the information just setup. */ | |
738 | if (NILP (current_buffer->enable_multibyte_characters) | |
739 | && !NILP (val)) | |
91183bfd KH |
740 | val = raw_text_coding_system (val); |
741 | setup_coding_system (val, &process_coding); | |
09494912 RS |
742 | } |
743 | ||
80856e74 JB |
744 | immediate_quit = 1; |
745 | QUIT; | |
746 | ||
747 | { | |
748 | register int nread; | |
0ad477db | 749 | int first = 1; |
6e3bfbb2 | 750 | int total_read = 0; |
321fecde | 751 | int carryover = 0; |
0aa2630f | 752 | int display_on_the_fly = display_p; |
05b44e90 KH |
753 | struct coding_system saved_coding; |
754 | ||
755 | saved_coding = process_coding; | |
60558b19 | 756 | while (1) |
80856e74 | 757 | { |
60558b19 RS |
758 | /* Repeatedly read until we've filled as much as possible |
759 | of the buffer size we have. But don't read | |
8e6208c5 | 760 | less than 1024--save that for the next bufferful. */ |
321fecde | 761 | nread = carryover; |
60558b19 | 762 | while (nread < bufsize - 1024) |
00fb3e95 | 763 | { |
4da256b1 | 764 | int this_read = emacs_read (fd[0], buf + nread, |
68c45bf0 | 765 | bufsize - nread); |
60558b19 RS |
766 | |
767 | if (this_read < 0) | |
768 | goto give_up; | |
769 | ||
770 | if (this_read == 0) | |
7a7ab107 KH |
771 | { |
772 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
773 | break; | |
774 | } | |
60558b19 RS |
775 | |
776 | nread += this_read; | |
7a7ab107 | 777 | total_read += this_read; |
60558b19 | 778 | |
7a7ab107 KH |
779 | if (display_on_the_fly) |
780 | break; | |
781 | } | |
60558b19 RS |
782 | |
783 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 784 | immediate_quit = 0; |
177c0ea7 | 785 | |
012c6fcb | 786 | if (!NILP (buffer)) |
32d08644 | 787 | { |
bb4a3884 KH |
788 | if (NILP (current_buffer->enable_multibyte_characters) |
789 | && ! CODING_MAY_REQUIRE_DECODING (&process_coding)) | |
4da256b1 | 790 | insert_1_both (buf, nread, nread, 0, 1, 0); |
32d08644 KH |
791 | else |
792 | { /* We have to decode the input. */ | |
45d60801 | 793 | Lisp_Object curbuf; |
177c0ea7 | 794 | |
45d60801 KH |
795 | XSETBUFFER (curbuf, current_buffer); |
796 | decode_coding_c_string (&process_coding, buf, nread, | |
797 | curbuf); | |
7a7ab107 | 798 | if (display_on_the_fly |
91183bfd KH |
799 | && CODING_REQUIRE_DETECTION (&saved_coding) |
800 | && ! CODING_REQUIRE_DETECTION (&process_coding)) | |
7a7ab107 KH |
801 | { |
802 | /* We have detected some coding system. But, | |
803 | there's a possibility that the detection was | |
804 | done by insufficient data. So, we give up | |
805 | displaying on the fly. */ | |
91183bfd KH |
806 | if (process_coding.produced > 0) |
807 | del_range_2 (process_coding.dst_pos, | |
808 | process_coding.dst_pos_byte, | |
809 | process_coding.dst_pos | |
810 | + process_coding.produced_char, | |
811 | process_coding.dst_pos_byte | |
812 | + process_coding.produced, 0); | |
7a7ab107 KH |
813 | display_on_the_fly = 0; |
814 | process_coding = saved_coding; | |
815 | carryover = nread; | |
0aa2630f KS |
816 | /* This is to make the above condition always |
817 | fails in the future. */ | |
21d0467f KH |
818 | saved_coding.common_flags |
819 | &= ~CODING_REQUIRE_DETECTION_MASK; | |
7a7ab107 KH |
820 | continue; |
821 | } | |
177c0ea7 | 822 | |
ea99bcc1 KH |
823 | TEMP_SET_PT_BOTH (PT + process_coding.produced_char, |
824 | PT_BYTE + process_coding.produced); | |
54ab3d3b | 825 | carryover = process_coding.carryover_bytes; |
321fecde | 826 | if (carryover > 0) |
c5bfa12b KH |
827 | /* As CARRYOVER should not be that large, we had |
828 | better avoid overhead of bcopy. */ | |
45d60801 | 829 | BCOPY_SHORT (process_coding.carryover, buf, |
54ab3d3b | 830 | process_coding.carryover_bytes); |
32d08644 KH |
831 | } |
832 | } | |
c5bfa12b | 833 | |
321fecde | 834 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 835 | break; |
6e3bfbb2 | 836 | |
4da256b1 | 837 | #if (CALLPROC_BUFFER_SIZE_MIN != CALLPROC_BUFFER_SIZE_MAX) |
6e3bfbb2 | 838 | /* Make the buffer bigger as we continue to read more data, |
4da256b1 KS |
839 | but not past CALLPROC_BUFFER_SIZE_MAX. */ |
840 | if (bufsize < CALLPROC_BUFFER_SIZE_MAX && total_read > 32 * bufsize) | |
841 | if ((bufsize *= 2) > CALLPROC_BUFFER_SIZE_MAX) | |
842 | bufsize = CALLPROC_BUFFER_SIZE_MAX; | |
843 | #endif | |
6e3bfbb2 | 844 | |
0aa2630f | 845 | if (display_p) |
0ad477db RS |
846 | { |
847 | if (first) | |
848 | prepare_menu_bars (); | |
849 | first = 0; | |
3007ebfb | 850 | redisplay_preserve_echo_area (1); |
0aa2630f KS |
851 | /* This variable might have been set to 0 for code |
852 | detection. In that case, we set it back to 1 because | |
853 | we should have already detected a coding system. */ | |
854 | display_on_the_fly = 1; | |
0ad477db | 855 | } |
80856e74 JB |
856 | immediate_quit = 1; |
857 | QUIT; | |
858 | } | |
60558b19 | 859 | give_up: ; |
80856e74 | 860 | |
91183bfd KH |
861 | Vlast_coding_system_used = CODING_ID_NAME (process_coding.id); |
862 | /* If the caller required, let the buffer inherit the | |
863 | coding-system used to decode the process output. */ | |
864 | if (inherit_process_coding_system) | |
865 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
8f924df7 | 866 | make_number (total_read)); |
3b440bb5 EZ |
867 | } |
868 | ||
80856e74 JB |
869 | /* Wait for it to terminate, unless it already has. */ |
870 | wait_for_termination (pid); | |
871 | ||
872 | immediate_quit = 0; | |
873 | ||
874 | set_buffer_internal (old); | |
875 | ||
37d54121 RS |
876 | /* Don't kill any children that the subprocess may have left behind |
877 | when exiting. */ | |
878 | call_process_exited = 1; | |
879 | ||
80856e74 JB |
880 | unbind_to (count, Qnil); |
881 | ||
6b61353c KH |
882 | if (synch_process_termsig) |
883 | { | |
884 | char *signame; | |
885 | ||
886 | synchronize_system_messages_locale (); | |
887 | signame = strsignal (synch_process_termsig); | |
888 | ||
889 | if (signame == 0) | |
890 | signame = "unknown"; | |
891 | ||
892 | synch_process_death = signame; | |
893 | } | |
894 | ||
80856e74 | 895 | if (synch_process_death) |
68c45bf0 PE |
896 | return code_convert_string_norecord (build_string (synch_process_death), |
897 | Vlocale_coding_system, 0); | |
80856e74 JB |
898 | return make_number (synch_process_retcode); |
899 | } | |
900 | #endif | |
901 | \f | |
9fefd2ba | 902 | static Lisp_Object |
80856e74 JB |
903 | delete_temp_file (name) |
904 | Lisp_Object name; | |
905 | { | |
1a271e14 KR |
906 | /* Suppress jka-compr handling, etc. */ |
907 | int count = SPECPDL_INDEX (); | |
908 | specbind (intern ("file-name-handler-alist"), Qnil); | |
2e3dc201 | 909 | internal_delete_file (name); |
1a271e14 | 910 | unbind_to (count, Qnil); |
320695d8 | 911 | return Qnil; |
80856e74 JB |
912 | } |
913 | ||
914 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
fdb82f93 PJ |
915 | 3, MANY, 0, |
916 | doc: /* Send text from START to END to a synchronous process running PROGRAM. | |
917 | The remaining arguments are optional. | |
918 | Delete the text if fourth arg DELETE is non-nil. | |
919 | ||
920 | Insert output in BUFFER before point; t means current buffer; | |
921 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
922 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
923 | REAL-BUFFER says what to do with standard output, as above, | |
924 | while STDERR-FILE says what to do with standard error in the child. | |
925 | STDERR-FILE may be nil (discard standard error output), | |
926 | t (mix it with ordinary output), or a file name string. | |
927 | ||
928 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
929 | Remaining args are passed to PROGRAM at startup as command args. | |
930 | ||
ba9a5174 | 931 | If BUFFER is 0, `call-process-region' returns immediately with value nil. |
fdb82f93 PJ |
932 | Otherwise it waits for PROGRAM to terminate |
933 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
934 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
935 | ||
936 | usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 937 | (nargs, args) |
80856e74 JB |
938 | int nargs; |
939 | register Lisp_Object *args; | |
940 | { | |
39323a7e KH |
941 | struct gcpro gcpro1; |
942 | Lisp_Object filename_string; | |
943 | register Lisp_Object start, end; | |
aed13378 | 944 | int count = SPECPDL_INDEX (); |
08ee4e87 | 945 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 946 | Lisp_Object coding_systems; |
32d08644 KH |
947 | Lisp_Object val, *args2; |
948 | int i; | |
bad95d8f | 949 | #ifdef DOS_NT |
7e6c2178 | 950 | char *tempfile; |
7e6c2178 RS |
951 | char *outf = '\0'; |
952 | ||
8a52365c EZ |
953 | if ((outf = egetenv ("TMPDIR")) |
954 | || (outf = egetenv ("TMP")) | |
955 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
956 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
957 | else | |
958 | { | |
959 | tempfile = alloca (20); | |
960 | *tempfile = '\0'; | |
961 | } | |
0774fcf8 | 962 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 963 | strcat (tempfile, "/"); |
5711b547 RS |
964 | if ('/' == DIRECTORY_SEP) |
965 | dostounix_filename (tempfile); | |
966 | else | |
967 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
968 | #ifdef WINDOWSNT |
969 | strcat (tempfile, "emXXXXXX"); | |
970 | #else | |
7e6c2178 | 971 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 972 | #endif |
bad95d8f | 973 | #else /* not DOS_NT */ |
d5db4077 KR |
974 | char *tempfile = (char *) alloca (SBYTES (Vtemp_file_name_pattern) + 1); |
975 | bcopy (SDATA (Vtemp_file_name_pattern), tempfile, | |
976 | SBYTES (Vtemp_file_name_pattern) + 1); | |
bad95d8f | 977 | #endif /* not DOS_NT */ |
7e6c2178 | 978 | |
09494912 RS |
979 | coding_systems = Qt; |
980 | ||
1ddc85a4 DL |
981 | #ifdef HAVE_MKSTEMP |
982 | { | |
983 | int fd = mkstemp (tempfile); | |
984 | if (fd == -1) | |
985 | report_file_error ("Failed to open temporary file", | |
986 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
987 | else | |
988 | close (fd); | |
989 | } | |
990 | #else | |
80856e74 | 991 | mktemp (tempfile); |
1ddc85a4 | 992 | #endif |
80856e74 JB |
993 | |
994 | filename_string = build_string (tempfile); | |
39323a7e | 995 | GCPRO1 (filename_string); |
80856e74 JB |
996 | start = args[0]; |
997 | end = args[1]; | |
32d08644 | 998 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
999 | if (!NILP (Vcoding_system_for_write)) |
1000 | val = Vcoding_system_for_write; | |
1001 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
1002 | val = Qnil; |
1003 | else | |
beacaab3 | 1004 | { |
91489411 RS |
1005 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
1006 | args2[0] = Qcall_process_region; | |
1007 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
1008 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
1009 | if (CONSP (coding_systems)) | |
70949dac | 1010 | val = XCDR (coding_systems); |
91489411 | 1011 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1012 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 1013 | else |
91489411 | 1014 | val = Qnil; |
beacaab3 | 1015 | } |
32d08644 | 1016 | |
168afdaa | 1017 | { |
aed13378 | 1018 | int count1 = SPECPDL_INDEX (); |
168afdaa RS |
1019 | |
1020 | specbind (intern ("coding-system-for-write"), val); | |
bb951f0e KR |
1021 | /* POSIX lets mk[s]temp use "."; don't invoke jka-compr if we |
1022 | happen to get a ".Z" suffix. */ | |
1023 | specbind (intern ("file-name-handler-alist"), Qnil); | |
168afdaa RS |
1024 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); |
1025 | ||
1026 | unbind_to (count1, Qnil); | |
1027 | } | |
91489411 | 1028 | |
177c0ea7 | 1029 | /* Note that Fcall_process takes care of binding |
91489411 | 1030 | coding-system-for-read. */ |
093650fe | 1031 | |
80856e74 JB |
1032 | record_unwind_protect (delete_temp_file, filename_string); |
1033 | ||
edf496dd | 1034 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
1035 | Fdelete_region (start, end); |
1036 | ||
edf496dd KH |
1037 | if (nargs > 3) |
1038 | { | |
1039 | args += 2; | |
1040 | nargs -= 2; | |
1041 | } | |
1042 | else | |
1043 | { | |
1044 | args[0] = args[2]; | |
1045 | nargs = 2; | |
1046 | } | |
1047 | args[1] = filename_string; | |
80856e74 | 1048 | |
edf496dd | 1049 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
1050 | } |
1051 | \f | |
1052 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
1053 | ||
dfcf069d AS |
1054 | static int relocate_fd (); |
1055 | ||
80856e74 JB |
1056 | /* This is the last thing run in a newly forked inferior |
1057 | either synchronous or asynchronous. | |
1058 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1059 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1060 | then exec another program based on new_argv. | |
1061 | ||
1062 | This function may change environ for the superior process. | |
1063 | Therefore, the superior process must save and restore the value | |
1064 | of environ around the vfork and the call to this function. | |
1065 | ||
80856e74 | 1066 | SET_PGRP is nonzero if we should put the subprocess into a separate |
177c0ea7 | 1067 | process group. |
e576cab4 JB |
1068 | |
1069 | CURRENT_DIR is an elisp string giving the path of the current | |
1070 | directory the subprocess should have. Since we can't really signal | |
1071 | a decent error from within the child, this should be verified as an | |
1072 | executable directory by the parent. */ | |
80856e74 | 1073 | |
dfcf069d | 1074 | int |
e576cab4 | 1075 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1076 | int in, out, err; |
1077 | register char **new_argv; | |
80856e74 | 1078 | int set_pgrp; |
e576cab4 | 1079 | Lisp_Object current_dir; |
80856e74 | 1080 | { |
e576cab4 | 1081 | char **env; |
7fcf7f05 | 1082 | char *pwd_var; |
bad95d8f RS |
1083 | #ifdef WINDOWSNT |
1084 | int cpid; | |
4252a4bd | 1085 | HANDLE handles[3]; |
bad95d8f | 1086 | #endif /* WINDOWSNT */ |
e576cab4 | 1087 | |
33abe2d9 | 1088 | int pid = getpid (); |
80856e74 | 1089 | |
68d10241 | 1090 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 | 1091 | { |
31ade731 | 1092 | extern EMACS_INT emacs_priority; |
4f0b9d49 | 1093 | |
68d10241 RS |
1094 | if (emacs_priority < 0) |
1095 | nice (- emacs_priority); | |
4f0b9d49 | 1096 | } |
5b633aeb | 1097 | #endif |
80856e74 JB |
1098 | |
1099 | #ifdef subprocesses | |
1100 | /* Close Emacs's descriptors that this process should not have. */ | |
1101 | close_process_descs (); | |
1102 | #endif | |
c17c4250 EZ |
1103 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1104 | we will lose if we call close_load_descs here. */ | |
1105 | #ifndef DOS_NT | |
4458cebe | 1106 | close_load_descs (); |
c17c4250 | 1107 | #endif |
80856e74 JB |
1108 | |
1109 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1110 | that do not have true vfork or that have true (stack) alloca. | |
1111 | If using vfork and C_ALLOCA it is safe because that changes | |
1112 | the superior's static variables as if the superior had done alloca | |
1113 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1114 | { |
7fcf7f05 | 1115 | register char *temp; |
e576cab4 | 1116 | register int i; |
77d78be1 | 1117 | |
d5db4077 | 1118 | i = SBYTES (current_dir); |
16425c4a EZ |
1119 | #ifdef MSDOS |
1120 | /* MSDOS must have all environment variables malloc'ed, because | |
1121 | low-level libc functions that launch subsidiary processes rely | |
1122 | on that. */ | |
1123 | pwd_var = (char *) xmalloc (i + 6); | |
1124 | #else | |
7fcf7f05 | 1125 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1126 | #endif |
7fcf7f05 RS |
1127 | temp = pwd_var + 4; |
1128 | bcopy ("PWD=", pwd_var, 4); | |
d5db4077 | 1129 | bcopy (SDATA (current_dir), temp, i); |
bad95d8f | 1130 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1131 | temp[i] = 0; |
1132 | ||
c17c4250 | 1133 | #ifndef DOS_NT |
e576cab4 JB |
1134 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1135 | the callers check the current directory before forking, this | |
1136 | should only return an error if the directory's permissions | |
1137 | are changed between the check and this chdir, but we should | |
1138 | at least check. */ | |
1139 | if (chdir (temp) < 0) | |
20b25e46 | 1140 | _exit (errno); |
b4c7684c | 1141 | #endif |
7fcf7f05 | 1142 | |
c17c4250 EZ |
1143 | #ifdef DOS_NT |
1144 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1145 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1146 | { | |
1147 | temp += 2; | |
1148 | i -= 2; | |
1149 | } | |
1150 | #endif | |
1151 | ||
7fcf7f05 | 1152 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1153 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1154 | temp[--i] = 0; |
e576cab4 | 1155 | } |
80856e74 | 1156 | |
80856e74 JB |
1157 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1158 | { | |
1159 | register Lisp_Object tem; | |
1160 | register char **new_env; | |
1161 | register int new_length; | |
1162 | ||
1163 | new_length = 0; | |
1164 | for (tem = Vprocess_environment; | |
70949dac KR |
1165 | CONSP (tem) && STRINGP (XCAR (tem)); |
1166 | tem = XCDR (tem)) | |
80856e74 JB |
1167 | new_length++; |
1168 | ||
7fcf7f05 RS |
1169 | /* new_length + 2 to include PWD and terminating 0. */ |
1170 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1171 | ||
1172 | /* If we have a PWD envvar, pass one down, | |
1173 | but with corrected value. */ | |
1174 | if (getenv ("PWD")) | |
1175 | *new_env++ = pwd_var; | |
80856e74 | 1176 | |
cd9565ba | 1177 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1178 | for (tem = Vprocess_environment; |
70949dac KR |
1179 | CONSP (tem) && STRINGP (XCAR (tem)); |
1180 | tem = XCDR (tem)) | |
cd9565ba RS |
1181 | { |
1182 | char **ep = env; | |
d5db4077 | 1183 | char *string = (char *) SDATA (XCAR (tem)); |
cd9565ba RS |
1184 | /* See if this string duplicates any string already in the env. |
1185 | If so, don't put it in. | |
1186 | When an env var has multiple definitions, | |
1187 | we keep the definition that comes first in process-environment. */ | |
1188 | for (; ep != new_env; ep++) | |
1189 | { | |
1190 | char *p = *ep, *q = string; | |
1191 | while (1) | |
1192 | { | |
1193 | if (*q == 0) | |
1194 | /* The string is malformed; might as well drop it. */ | |
1195 | goto duplicate; | |
1196 | if (*q != *p) | |
1197 | break; | |
1198 | if (*q == '=') | |
1199 | goto duplicate; | |
1200 | p++, q++; | |
1201 | } | |
1202 | } | |
1203 | *new_env++ = string; | |
1204 | duplicate: ; | |
1205 | } | |
80856e74 JB |
1206 | *new_env = 0; |
1207 | } | |
bad95d8f RS |
1208 | #ifdef WINDOWSNT |
1209 | prepare_standard_handles (in, out, err, handles); | |
d5db4077 | 1210 | set_process_dir (SDATA (current_dir)); |
bad95d8f | 1211 | #else /* not WINDOWSNT */ |
426b37ae JB |
1212 | /* Make sure that in, out, and err are not actually already in |
1213 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1214 | started with its standard in, out, or error closed, as might |
426b37ae | 1215 | happen under X. */ |
f29f9e4a RS |
1216 | { |
1217 | int oin = in, oout = out; | |
1218 | ||
1219 | /* We have to avoid relocating the same descriptor twice! */ | |
1220 | ||
1221 | in = relocate_fd (in, 3); | |
1222 | ||
1223 | if (out == oin) | |
1224 | out = in; | |
1225 | else | |
3e9367e7 | 1226 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1227 | |
1228 | if (err == oin) | |
1229 | err = in; | |
1230 | else if (err == oout) | |
1231 | err = out; | |
1232 | else | |
3e9367e7 | 1233 | err = relocate_fd (err, 3); |
f29f9e4a | 1234 | } |
426b37ae | 1235 | |
c17c4250 | 1236 | #ifndef MSDOS |
68c45bf0 PE |
1237 | emacs_close (0); |
1238 | emacs_close (1); | |
1239 | emacs_close (2); | |
80856e74 JB |
1240 | |
1241 | dup2 (in, 0); | |
1242 | dup2 (out, 1); | |
1243 | dup2 (err, 2); | |
68c45bf0 PE |
1244 | emacs_close (in); |
1245 | emacs_close (out); | |
1246 | emacs_close (err); | |
c17c4250 | 1247 | #endif /* not MSDOS */ |
bad95d8f | 1248 | #endif /* not WINDOWSNT */ |
80856e74 | 1249 | |
6b2cd868 | 1250 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1251 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1252 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1253 | #endif |
e576cab4 JB |
1254 | #else |
1255 | setpgrp (pid, pid); | |
1256 | #endif /* USG */ | |
a129418f RS |
1257 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1258 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 | 1259 | |
c17c4250 EZ |
1260 | #ifdef MSDOS |
1261 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
a3f0666f | 1262 | xfree (pwd_var); |
c17c4250 EZ |
1263 | if (pid == -1) |
1264 | /* An error occurred while trying to run the subprocess. */ | |
1265 | report_file_error ("Spawning child process", Qnil); | |
1266 | return pid; | |
1267 | #else /* not MSDOS */ | |
bad95d8f RS |
1268 | #ifdef WINDOWSNT |
1269 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1270 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1271 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1272 | if (cpid == -1) |
1273 | /* An error occurred while trying to spawn the process. */ | |
1274 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1275 | return cpid; |
1276 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1277 | /* execvp does not accept an environment arg so the only way |
1278 | to pass this environment is to set environ. Our caller | |
1279 | is responsible for restoring the ambient value of environ. */ | |
1280 | environ = env; | |
1281 | execvp (new_argv[0], new_argv); | |
1282 | ||
68c45bf0 PE |
1283 | emacs_write (1, "Can't exec program: ", 20); |
1284 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1285 | emacs_write (1, "\n", 1); | |
80856e74 | 1286 | _exit (1); |
bad95d8f | 1287 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1288 | #endif /* not MSDOS */ |
80856e74 JB |
1289 | } |
1290 | ||
a3833dfe | 1291 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1292 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1293 | static int |
a3833dfe KH |
1294 | relocate_fd (fd, minfd) |
1295 | int fd, minfd; | |
426b37ae | 1296 | { |
a3833dfe | 1297 | if (fd >= minfd) |
426b37ae JB |
1298 | return fd; |
1299 | else | |
1300 | { | |
1301 | int new = dup (fd); | |
1302 | if (new == -1) | |
1303 | { | |
20c018a0 | 1304 | char *message1 = "Error while setting up child: "; |
826c56ac | 1305 | char *errmessage = strerror (errno); |
20c018a0 | 1306 | char *message2 = "\n"; |
68c45bf0 PE |
1307 | emacs_write (2, message1, strlen (message1)); |
1308 | emacs_write (2, errmessage, strlen (errmessage)); | |
1309 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1310 | _exit (1); |
1311 | } | |
1312 | /* Note that we hold the original FD open while we recurse, | |
1313 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1314 | new = relocate_fd (new, minfd); |
68c45bf0 | 1315 | emacs_close (fd); |
426b37ae JB |
1316 | return new; |
1317 | } | |
1318 | } | |
1319 | ||
012c6fcb JA |
1320 | static int |
1321 | getenv_internal (var, varlen, value, valuelen) | |
1322 | char *var; | |
1323 | int varlen; | |
1324 | char **value; | |
1325 | int *valuelen; | |
1326 | { | |
1327 | Lisp_Object scan; | |
1328 | ||
70949dac | 1329 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1330 | { |
c1350752 KH |
1331 | Lisp_Object entry; |
1332 | ||
70949dac | 1333 | entry = XCAR (scan); |
d50d3dc8 | 1334 | if (STRINGP (entry) |
d5db4077 KR |
1335 | && SBYTES (entry) > varlen |
1336 | && SREF (entry, varlen) == '=' | |
bad95d8f RS |
1337 | #ifdef WINDOWSNT |
1338 | /* NT environment variables are case insensitive. */ | |
d5db4077 | 1339 | && ! strnicmp (SDATA (entry), var, varlen) |
bad95d8f | 1340 | #else /* not WINDOWSNT */ |
d5db4077 | 1341 | && ! bcmp (SDATA (entry), var, varlen) |
bad95d8f | 1342 | #endif /* not WINDOWSNT */ |
a9971c6d | 1343 | ) |
012c6fcb | 1344 | { |
d5db4077 KR |
1345 | *value = (char *) SDATA (entry) + (varlen + 1); |
1346 | *valuelen = SBYTES (entry) - (varlen + 1); | |
012c6fcb JA |
1347 | return 1; |
1348 | } | |
1349 | } | |
1350 | ||
1351 | return 0; | |
1352 | } | |
1353 | ||
83fa009c | 1354 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0, |
fdb82f93 PJ |
1355 | doc: /* Return the value of environment variable VAR, as a string. |
1356 | VAR should be a string. Value is nil if VAR is undefined in the environment. | |
1357 | This function consults the variable ``process-environment'' for its value. */) | |
1358 | (var) | |
012c6fcb JA |
1359 | Lisp_Object var; |
1360 | { | |
1361 | char *value; | |
1362 | int valuelen; | |
1363 | ||
b7826503 | 1364 | CHECK_STRING (var); |
d5db4077 | 1365 | if (getenv_internal (SDATA (var), SBYTES (var), |
012c6fcb JA |
1366 | &value, &valuelen)) |
1367 | return make_string (value, valuelen); | |
1368 | else | |
1369 | return Qnil; | |
1370 | } | |
1371 | ||
1372 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1373 | callable from C. */ |
012c6fcb JA |
1374 | char * |
1375 | egetenv (var) | |
e576cab4 | 1376 | char *var; |
012c6fcb JA |
1377 | { |
1378 | char *value; | |
1379 | int valuelen; | |
1380 | ||
1381 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1382 | return value; | |
1383 | else | |
1384 | return 0; | |
1385 | } | |
1386 | ||
80856e74 JB |
1387 | #endif /* not VMS */ |
1388 | \f | |
8de15d69 | 1389 | /* This is run before init_cmdargs. */ |
177c0ea7 | 1390 | |
dfcf069d | 1391 | void |
8de15d69 RS |
1392 | init_callproc_1 () |
1393 | { | |
1394 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1395 | char *doc_dir = egetenv ("EMACSDOC"); |
1396 | ||
8de15d69 | 1397 | Vdata_directory |
177c0ea7 | 1398 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1399 | : PATH_DATA)); |
35a2f4b8 KH |
1400 | Vdoc_directory |
1401 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1402 | : PATH_DOC)); | |
9453ea7b | 1403 | |
e576cab4 | 1404 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1405 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1406 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1407 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1408 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1409 | } |
1410 | ||
e17f7533 | 1411 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1412 | |
dfcf069d | 1413 | void |
8de15d69 RS |
1414 | init_callproc () |
1415 | { | |
1416 | char *data_dir = egetenv ("EMACSDATA"); | |
177c0ea7 | 1417 | |
8de15d69 RS |
1418 | register char * sh; |
1419 | Lisp_Object tempdir; | |
1420 | ||
9cc4fad5 | 1421 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1422 | { |
05630743 RS |
1423 | /* Add to the path the lib-src subdir of the installation dir. */ |
1424 | Lisp_Object tem; | |
1425 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1426 | Vinstallation_directory); | |
bad95d8f | 1427 | #ifndef DOS_NT |
1a6640ec | 1428 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc | 1429 | if (NILP (Fmember (tem, Vexec_path))) |
70ec1377 RS |
1430 | { |
1431 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); | |
1432 | Vexec_path = Fcons (tem, Vexec_path); | |
1433 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
1434 | } | |
177c0ea7 | 1435 | |
0fa248bc | 1436 | Vexec_directory = Ffile_name_as_directory (tem); |
bad95d8f | 1437 | #endif /* not DOS_NT */ |
8de15d69 | 1438 | |
e17f7533 RS |
1439 | /* Maybe use ../etc as well as ../lib-src. */ |
1440 | if (data_dir == 0) | |
1441 | { | |
1442 | tem = Fexpand_file_name (build_string ("etc"), | |
1443 | Vinstallation_directory); | |
1444 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1445 | } |
1446 | } | |
7e933683 RS |
1447 | |
1448 | /* Look for the files that should be in etc. We don't use | |
1449 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1450 | near the executable, and they are never in the build |
7e933683 RS |
1451 | directory when that's different from the source directory. |
1452 | ||
1453 | Instead, if these files are not in the nominal place, we try the | |
1454 | source directory. */ | |
1455 | if (data_dir == 0) | |
1456 | { | |
70ec1377 | 1457 | Lisp_Object tem, tem1, srcdir; |
7e933683 | 1458 | |
70ec1377 RS |
1459 | srcdir = Fexpand_file_name (build_string ("../src/"), |
1460 | build_string (PATH_DUMPLOADSEARCH)); | |
7e933683 RS |
1461 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); |
1462 | tem1 = Ffile_exists_p (tem); | |
70ec1377 | 1463 | if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1)) |
7e933683 | 1464 | { |
70ec1377 | 1465 | Lisp_Object newdir; |
7e933683 RS |
1466 | newdir = Fexpand_file_name (build_string ("../etc/"), |
1467 | build_string (PATH_DUMPLOADSEARCH)); | |
1468 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1469 | tem1 = Ffile_exists_p (tem); | |
1470 | if (!NILP (tem1)) | |
1471 | Vdata_directory = newdir; | |
1472 | } | |
1473 | } | |
80856e74 | 1474 | |
d883eb62 RS |
1475 | #ifndef CANNOT_DUMP |
1476 | if (initialized) | |
1477 | #endif | |
1478 | { | |
1479 | tempdir = Fdirectory_file_name (Vexec_directory); | |
d5db4077 | 1480 | if (access (SDATA (tempdir), 0) < 0) |
d883eb62 RS |
1481 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", |
1482 | Vexec_directory); | |
1483 | } | |
80856e74 | 1484 | |
e576cab4 | 1485 | tempdir = Fdirectory_file_name (Vdata_directory); |
d5db4077 | 1486 | if (access (SDATA (tempdir), 0) < 0) |
76d5c6cf RS |
1487 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1488 | Vdata_directory); | |
e576cab4 | 1489 | |
80856e74 JB |
1490 | #ifdef VMS |
1491 | Vshell_file_name = build_string ("*dcl*"); | |
1492 | #else | |
e576cab4 | 1493 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1494 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1495 | #endif | |
8abd035b RS |
1496 | |
1497 | #ifdef VMS | |
1498 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1499 | #else | |
1500 | if (getenv ("TMPDIR")) | |
1501 | { | |
1502 | char *dir = getenv ("TMPDIR"); | |
1503 | Vtemp_file_name_pattern | |
1504 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1505 | build_string (dir)); | |
1506 | } | |
1507 | else | |
1508 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1509 | #endif | |
63789758 | 1510 | |
40b49d4b JB |
1511 | #ifdef DOS_NT |
1512 | Vshared_game_score_directory = Qnil; | |
1513 | #else | |
63789758 RS |
1514 | Vshared_game_score_directory = build_string (PATH_GAME); |
1515 | if (NILP (Ffile_directory_p (Vshared_game_score_directory))) | |
1516 | Vshared_game_score_directory = Qnil; | |
40b49d4b | 1517 | #endif |
9fefd2ba JB |
1518 | } |
1519 | ||
dfcf069d | 1520 | void |
9fefd2ba JB |
1521 | set_process_environment () |
1522 | { | |
1523 | register char **envp; | |
80856e74 | 1524 | |
80856e74 JB |
1525 | Vprocess_environment = Qnil; |
1526 | #ifndef CANNOT_DUMP | |
1527 | if (initialized) | |
1528 | #endif | |
1529 | for (envp = environ; *envp; envp++) | |
1530 | Vprocess_environment = Fcons (build_string (*envp), | |
1531 | Vprocess_environment); | |
80856e74 JB |
1532 | } |
1533 | ||
dfcf069d | 1534 | void |
80856e74 JB |
1535 | syms_of_callproc () |
1536 | { | |
bad95d8f | 1537 | #ifdef DOS_NT |
093650fe RS |
1538 | Qbuffer_file_type = intern ("buffer-file-type"); |
1539 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1540 | #endif /* DOS_NT */ |
7e6c2178 | 1541 | |
80856e74 | 1542 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
fdb82f93 PJ |
1543 | doc: /* *File name to load inferior shells from. |
1544 | Initialized from the SHELL environment variable. */); | |
80856e74 JB |
1545 | |
1546 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
fdb82f93 PJ |
1547 | doc: /* *List of directories to search programs to run in subprocesses. |
1548 | Each element is a string (directory name) or nil (try default directory). */); | |
80856e74 | 1549 | |
b81a1b72 | 1550 | DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, |
fdb82f93 PJ |
1551 | doc: /* *List of suffixes to try to find executable file names. |
1552 | Each element is a string. */); | |
33d5af99 | 1553 | Vexec_suffixes = Qnil; |
b81a1b72 | 1554 | |
80856e74 | 1555 | DEFVAR_LISP ("exec-directory", &Vexec_directory, |
fdb82f93 PJ |
1556 | doc: /* Directory for executables for Emacs to invoke. |
1557 | More generally, this includes any architecture-dependent files | |
1558 | that are built and installed from the Emacs distribution. */); | |
e576cab4 JB |
1559 | |
1560 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
fdb82f93 PJ |
1561 | doc: /* Directory of machine-independent files that come with GNU Emacs. |
1562 | These are files intended for Emacs to use while it runs. */); | |
80856e74 | 1563 | |
35a2f4b8 | 1564 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
fdb82f93 PJ |
1565 | doc: /* Directory containing the DOC file that comes with GNU Emacs. |
1566 | This is usually the same as data-directory. */); | |
35a2f4b8 | 1567 | |
ed61592a | 1568 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
fdb82f93 PJ |
1569 | doc: /* For internal use by the build procedure only. |
1570 | This is the name of the directory in which the build procedure installed | |
1571 | Emacs's info files; the default value for Info-default-directory-list | |
1572 | includes this. */); | |
ed61592a JB |
1573 | Vconfigure_info_directory = build_string (PATH_INFO); |
1574 | ||
1e7ce61b | 1575 | DEFVAR_LISP ("shared-game-score-directory", &Vshared_game_score_directory, |
b065672a CW |
1576 | doc: /* Directory of score files for games which come with GNU Emacs. |
1577 | If this variable is nil, then Emacs is unable to use a shared directory. */); | |
40b49d4b JB |
1578 | #ifdef DOS_NT |
1579 | Vshared_game_score_directory = Qnil; | |
1580 | #else | |
63789758 | 1581 | Vshared_game_score_directory = build_string (PATH_GAME); |
40b49d4b | 1582 | #endif |
b065672a | 1583 | |
8abd035b | 1584 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
fdb82f93 PJ |
1585 | doc: /* Pattern for making names for temporary files. |
1586 | This is used by `call-process-region'. */); | |
0537ec48 | 1587 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1588 | |
80856e74 | 1589 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
fdb82f93 PJ |
1590 | doc: /* List of environment variables for subprocesses to inherit. |
1591 | Each element should be a string of the form ENVVARNAME=VALUE. | |
1592 | If multiple entries define the same variable, the first one always | |
1593 | takes precedence. | |
1594 | The environment which Emacs inherits is placed in this variable | |
776a24a1 DL |
1595 | when Emacs starts. |
1596 | Non-ASCII characters are encoded according to the initial value of | |
1597 | `locale-coding-system', i.e. the elements must normally be decoded for use. | |
1598 | See `setenv' and `getenv'. */); | |
80856e74 JB |
1599 | |
1600 | #ifndef VMS | |
1601 | defsubr (&Scall_process); | |
83fa009c | 1602 | defsubr (&Sgetenv_internal); |
986ffb24 | 1603 | #endif |
e576cab4 | 1604 | defsubr (&Scall_process_region); |
80856e74 | 1605 | } |
6b61353c KH |
1606 | |
1607 | /* arch-tag: 769b8045-1df7-4d2b-8968-e3fb49017f95 | |
1608 | (do not change this comment) */ |