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, |
5df4f04c | 3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
8cabe764 | 4 | Free Software Foundation, Inc. |
80856e74 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
80856e74 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
80856e74 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
80856e74 JB |
20 | |
21 | ||
68c45bf0 | 22 | #include <config.h> |
80856e74 | 23 | #include <signal.h> |
e576cab4 | 24 | #include <errno.h> |
565620a5 | 25 | #include <stdio.h> |
d7306fe6 | 26 | #include <setjmp.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" |
f105f403 KL |
87 | #include "frame.h" |
88 | #include "termhooks.h" | |
80856e74 | 89 | |
5f027cea EZ |
90 | #ifdef MSDOS |
91 | #include "msdos.h" | |
92 | #endif | |
93 | ||
03695ace | 94 | #ifndef USE_CRT_DLL |
80856e74 JB |
95 | extern char **environ; |
96 | #endif | |
97 | ||
f95c3f91 | 98 | #ifdef HAVE_SETPGID |
2b7e8799 | 99 | #if !defined (USG) || defined (BSD_PGRPS) |
320695d8 | 100 | #undef setpgrp |
f95c3f91 GM |
101 | #define setpgrp setpgid |
102 | #endif | |
2b7e8799 | 103 | #endif |
f95c3f91 | 104 | |
b81a1b72 SM |
105 | Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes; |
106 | Lisp_Object Vdata_directory, Vdoc_directory; | |
1e7ce61b | 107 | Lisp_Object Vconfigure_info_directory, Vshared_game_score_directory; |
f92d51d8 CY |
108 | |
109 | /* Pattern used by call-process-region to make temp files. */ | |
110 | static Lisp_Object Vtemp_file_name_pattern; | |
111 | ||
112 | extern Lisp_Object Vtemporary_file_directory; | |
80856e74 JB |
113 | |
114 | Lisp_Object Vshell_file_name; | |
115 | ||
6b8e474c | 116 | Lisp_Object Vprocess_environment, Vinitial_environment; |
80856e74 | 117 | |
bad95d8f | 118 | #ifdef DOS_NT |
093650fe | 119 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 120 | #endif /* DOS_NT */ |
093650fe | 121 | |
e0f24100 | 122 | /* True if we are about to fork off a synchronous process or if we |
80856e74 JB |
123 | are waiting for it. */ |
124 | int synch_process_alive; | |
125 | ||
126 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
127 | char *synch_process_death; | |
128 | ||
6b61353c KH |
129 | /* Nonzero => this is the signal number that terminated the subprocess. */ |
130 | int synch_process_termsig; | |
131 | ||
80856e74 JB |
132 | /* If synch_process_death is zero, |
133 | this is exit code of synchronous subprocess. */ | |
134 | int synch_process_retcode; | |
f105f403 | 135 | |
80856e74 | 136 | \f |
37d54121 RS |
137 | /* Clean up when exiting Fcall_process. |
138 | On MSDOS, delete the temporary file on any kind of termination. | |
139 | On Unix, kill the process and any children on termination by signal. */ | |
140 | ||
141 | /* Nonzero if this is termination due to exit. */ | |
142 | static int call_process_exited; | |
143 | ||
d2bb6598 SM |
144 | EXFUN (Fgetenv_internal, 2); |
145 | ||
d177f194 JB |
146 | static Lisp_Object |
147 | call_process_kill (fdpid) | |
148 | Lisp_Object fdpid; | |
149 | { | |
68c45bf0 | 150 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
151 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
152 | synch_process_alive = 0; | |
153 | return Qnil; | |
154 | } | |
155 | ||
80856e74 | 156 | Lisp_Object |
ad3aaf33 AS |
157 | call_process_cleanup (arg) |
158 | Lisp_Object arg; | |
80856e74 | 159 | { |
ad3aaf33 AS |
160 | Lisp_Object fdpid = Fcdr (arg); |
161 | #if defined (MSDOS) | |
162 | Lisp_Object file; | |
163 | #else | |
164 | int pid; | |
165 | #endif | |
166 | ||
167 | Fset_buffer (Fcar (arg)); | |
168 | ||
e39a993c | 169 | #if defined (MSDOS) |
7e6c2178 | 170 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 | 171 | file = Fcdr (fdpid); |
68c45bf0 | 172 | emacs_close (XFASTINT (Fcar (fdpid))); |
d5db4077 KR |
173 | if (strcmp (SDATA (file), NULL_DEVICE) != 0) |
174 | unlink (SDATA (file)); | |
e39a993c | 175 | #else /* not MSDOS */ |
ad3aaf33 | 176 | pid = XFASTINT (Fcdr (fdpid)); |
d177f194 | 177 | |
37d54121 | 178 | if (call_process_exited) |
6b6e798b | 179 | { |
68c45bf0 | 180 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
181 | return Qnil; |
182 | } | |
37d54121 | 183 | |
d177f194 JB |
184 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
185 | { | |
aed13378 | 186 | int count = SPECPDL_INDEX (); |
d177f194 JB |
187 | record_unwind_protect (call_process_kill, fdpid); |
188 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
189 | immediate_quit = 1; | |
190 | QUIT; | |
191 | wait_for_termination (pid); | |
192 | immediate_quit = 0; | |
193 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
194 | message1 ("Waiting for process to die...done"); | |
195 | } | |
80856e74 | 196 | synch_process_alive = 0; |
68c45bf0 | 197 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 198 | #endif /* not MSDOS */ |
80856e74 JB |
199 | return Qnil; |
200 | } | |
201 | ||
202 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
fdb82f93 PJ |
203 | doc: /* Call PROGRAM synchronously in separate process. |
204 | The remaining arguments are optional. | |
205 | The program's input comes from file INFILE (nil means `/dev/null'). | |
206 | Insert output in BUFFER before point; t means current buffer; | |
207 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
208 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
209 | REAL-BUFFER says what to do with standard output, as above, | |
210 | while STDERR-FILE says what to do with standard error in the child. | |
211 | STDERR-FILE may be nil (discard standard error output), | |
212 | t (mix it with ordinary output), or a file name string. | |
213 | ||
214 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
215 | Remaining arguments are strings passed as command arguments to PROGRAM. | |
216 | ||
a4feb144 RS |
217 | If executable PROGRAM can't be found as an executable, `call-process' |
218 | signals a Lisp error. `call-process' reports errors in execution of | |
219 | the program only through its return and output. | |
220 | ||
fdb82f93 PJ |
221 | If BUFFER is 0, `call-process' returns immediately with value nil. |
222 | Otherwise it waits for PROGRAM to terminate | |
223 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
224 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
225 | ||
226 | usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 227 | (nargs, args) |
80856e74 JB |
228 | int nargs; |
229 | register Lisp_Object *args; | |
230 | { | |
0aa2630f KS |
231 | Lisp_Object infile, buffer, current_dir, path; |
232 | int display_p; | |
80856e74 JB |
233 | int fd[2]; |
234 | int filefd; | |
235 | register int pid; | |
4da256b1 KS |
236 | #define CALLPROC_BUFFER_SIZE_MIN (16 * 1024) |
237 | #define CALLPROC_BUFFER_SIZE_MAX (4 * CALLPROC_BUFFER_SIZE_MIN) | |
238 | char buf[CALLPROC_BUFFER_SIZE_MAX]; | |
239 | int bufsize = CALLPROC_BUFFER_SIZE_MIN; | |
aed13378 | 240 | int count = SPECPDL_INDEX (); |
2d607244 | 241 | |
1aa83b22 | 242 | register const unsigned char **new_argv; |
39eaa782 RS |
243 | /* File to use for stderr in the child. |
244 | t means use same as standard output. */ | |
245 | Lisp_Object error_file; | |
7e6c2178 RS |
246 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
247 | char *outf, *tempfile; | |
248 | int outfilefd; | |
80856e74 | 249 | #endif |
32d08644 KH |
250 | struct coding_system process_coding; /* coding-system of process output */ |
251 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
252 | /* Set to the return value of Ffind_operation_coding_system. */ |
253 | Lisp_Object coding_systems; | |
254 | ||
255 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
256 | coding_systems = Qt; | |
32d08644 | 257 | |
b7826503 | 258 | CHECK_STRING (args[0]); |
80856e74 | 259 | |
39eaa782 RS |
260 | error_file = Qt; |
261 | ||
7e6c2178 RS |
262 | #ifndef subprocesses |
263 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
177c0ea7 | 264 | if (nargs >= 3 |
09ffb8b5 | 265 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
266 | error ("Operating system cannot handle asynchronous subprocesses"); |
267 | #endif /* subprocesses */ | |
268 | ||
09494912 | 269 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
270 | { |
271 | Lisp_Object val, *args2; | |
32d08644 KH |
272 | int i; |
273 | ||
274 | /* If arguments are supplied, we may have to encode them. */ | |
275 | if (nargs >= 5) | |
276 | { | |
30d57b8e | 277 | int must_encode = 0; |
6e50da0a | 278 | Lisp_Object coding_attrs; |
30d57b8e | 279 | |
e7c1c20e | 280 | for (i = 4; i < nargs; i++) |
b7826503 | 281 | CHECK_STRING (args[i]); |
e7c1c20e | 282 | |
a2286b5c | 283 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
284 | if (STRING_MULTIBYTE (args[i])) |
285 | must_encode = 1; | |
286 | ||
beacaab3 KH |
287 | if (!NILP (Vcoding_system_for_write)) |
288 | val = Vcoding_system_for_write; | |
30d57b8e | 289 | else if (! must_encode) |
fcaf8878 | 290 | val = Qraw_text; |
beacaab3 | 291 | else |
32d08644 KH |
292 | { |
293 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
294 | args2[0] = Qcall_process; | |
295 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 296 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
fcaf8878 | 297 | val = CONSP (coding_systems) ? XCDR (coding_systems) : Qnil; |
32d08644 | 298 | } |
fcaf8878 | 299 | val = complement_process_encoding_system (val); |
32d08644 | 300 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); |
6e50da0a KH |
301 | coding_attrs = CODING_ID_ATTRS (argument_coding.id); |
302 | if (NILP (CODING_ATTR_ASCII_COMPAT (coding_attrs))) | |
303 | { | |
304 | /* We should not use an ASCII incompatible coding system. */ | |
305 | val = raw_text_coding_system (val); | |
306 | setup_coding_system (val, &argument_coding); | |
307 | } | |
32d08644 | 308 | } |
32d08644 KH |
309 | } |
310 | ||
e576cab4 JB |
311 | if (nargs >= 2 && ! NILP (args[1])) |
312 | { | |
313 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
b7826503 | 314 | CHECK_STRING (infile); |
e576cab4 | 315 | } |
80856e74 | 316 | else |
5437e9f9 | 317 | infile = build_string (NULL_DEVICE); |
80856e74 | 318 | |
e576cab4 JB |
319 | if (nargs >= 3) |
320 | { | |
39eaa782 RS |
321 | buffer = args[2]; |
322 | ||
323 | /* If BUFFER is a list, its meaning is | |
324 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
325 | if (CONSP (buffer)) | |
326 | { | |
70949dac | 327 | if (CONSP (XCDR (buffer))) |
45be8a1e | 328 | { |
a9d4f28a | 329 | Lisp_Object stderr_file; |
70949dac | 330 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
331 | |
332 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
333 | error_file = stderr_file; | |
334 | else | |
335 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
336 | } | |
337 | ||
70949dac | 338 | buffer = XCAR (buffer); |
39eaa782 | 339 | } |
044512ed | 340 | |
39eaa782 RS |
341 | if (!(EQ (buffer, Qnil) |
342 | || EQ (buffer, Qt) | |
3ffde7d6 | 343 | || INTEGERP (buffer))) |
e576cab4 | 344 | { |
39eaa782 RS |
345 | Lisp_Object spec_buffer; |
346 | spec_buffer = buffer; | |
50fe359b | 347 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
348 | /* Mention the buffer name for a better error message. */ |
349 | if (NILP (buffer)) | |
b7826503 PJ |
350 | CHECK_BUFFER (spec_buffer); |
351 | CHECK_BUFFER (buffer); | |
e576cab4 JB |
352 | } |
353 | } | |
177c0ea7 | 354 | else |
e576cab4 | 355 | buffer = Qnil; |
80856e74 | 356 | |
58616e67 JB |
357 | /* Make sure that the child will be able to chdir to the current |
358 | buffer's current directory, or its unhandled equivalent. We | |
359 | can't just have the child check for an error when it does the | |
360 | chdir, since it's in a vfork. | |
361 | ||
362 | We have to GCPRO around this because Fexpand_file_name, | |
363 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
364 | might call a file name handling function. The argument list is | |
365 | protected by the caller, so all we really have to worry about is | |
366 | buffer. */ | |
367 | { | |
34b87689 | 368 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
58616e67 JB |
369 | |
370 | current_dir = current_buffer->directory; | |
371 | ||
34b87689 | 372 | GCPRO4 (infile, buffer, current_dir, error_file); |
58616e67 | 373 | |
ca319910 SM |
374 | current_dir = Funhandled_file_name_directory (current_dir); |
375 | if (NILP (current_dir)) | |
376 | /* If the file name handler says that current_dir is unreachable, use | |
377 | a sensible default. */ | |
378 | current_dir = build_string ("~/"); | |
379 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
db8454b0 CY |
380 | current_dir = Ffile_name_as_directory (current_dir); |
381 | ||
58616e67 JB |
382 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
383 | report_file_error ("Setting current directory", | |
384 | Fcons (current_buffer->directory, Qnil)); | |
385 | ||
34b87689 KH |
386 | if (STRING_MULTIBYTE (infile)) |
387 | infile = ENCODE_FILE (infile); | |
388 | if (STRING_MULTIBYTE (current_dir)) | |
389 | current_dir = ENCODE_FILE (current_dir); | |
390 | if (STRINGP (error_file) && STRING_MULTIBYTE (error_file)) | |
391 | error_file = ENCODE_FILE (error_file); | |
58616e67 JB |
392 | UNGCPRO; |
393 | } | |
394 | ||
0aa2630f | 395 | display_p = INTERACTIVE && nargs >= 4 && !NILP (args[3]); |
80856e74 | 396 | |
d5db4077 | 397 | filefd = emacs_open (SDATA (infile), O_RDONLY, 0); |
80856e74 JB |
398 | if (filefd < 0) |
399 | { | |
34b87689 | 400 | infile = DECODE_FILE (infile); |
e576cab4 | 401 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
402 | } |
403 | /* Search for program; barf if not found. */ | |
c52b0b34 | 404 | { |
ad3aaf33 | 405 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
c52b0b34 | 406 | |
ad3aaf33 | 407 | GCPRO4 (infile, buffer, current_dir, error_file); |
5c150961 | 408 | openp (Vexec_path, args[0], Vexec_suffixes, &path, make_number (X_OK)); |
c52b0b34 KH |
409 | UNGCPRO; |
410 | } | |
012c6fcb | 411 | if (NILP (path)) |
80856e74 | 412 | { |
68c45bf0 | 413 | emacs_close (filefd); |
80856e74 JB |
414 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
415 | } | |
8ee8f447 RS |
416 | |
417 | /* If program file name starts with /: for quoting a magic name, | |
418 | discard that. */ | |
419 | if (SBYTES (path) > 2 && SREF (path, 0) == '/' | |
420 | && SREF (path, 1) == ':') | |
421 | path = Fsubstring (path, make_number (2), Qnil); | |
422 | ||
1aa83b22 AS |
423 | new_argv = (const unsigned char **) |
424 | alloca (max (2, nargs - 2) * sizeof (char *)); | |
c364e618 KH |
425 | if (nargs > 4) |
426 | { | |
427 | register int i; | |
ad3aaf33 | 428 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
c364e618 | 429 | |
ad3aaf33 | 430 | GCPRO5 (infile, buffer, current_dir, path, error_file); |
c5bfa12b KH |
431 | argument_coding.dst_multibyte = 0; |
432 | for (i = 4; i < nargs; i++) | |
c364e618 | 433 | { |
c5bfa12b KH |
434 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
435 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
91183bfd KH |
436 | /* We must encode this argument. */ |
437 | args[i] = encode_coding_string (&argument_coding, args[i], 1); | |
c364e618 | 438 | } |
c5bfa12b | 439 | UNGCPRO; |
1aa83b22 AS |
440 | for (i = 4; i < nargs; i++) |
441 | new_argv[i - 3] = SDATA (args[i]); | |
442 | new_argv[i - 3] = 0; | |
c364e618 | 443 | } |
db54baaa KH |
444 | else |
445 | new_argv[1] = 0; | |
1aa83b22 | 446 | new_argv[0] = SDATA (path); |
80856e74 | 447 | |
7e6c2178 | 448 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 449 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
450 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
451 | else | |
452 | { | |
453 | tempfile = alloca (20); | |
454 | *tempfile = '\0'; | |
455 | } | |
456 | dostounix_filename (tempfile); | |
177c0ea7 | 457 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') |
7e6c2178 RS |
458 | strcat (tempfile, "/"); |
459 | strcat (tempfile, "detmp.XXX"); | |
460 | mktemp (tempfile); | |
461 | ||
462 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
463 | if (outfilefd < 0) | |
464 | { | |
68c45bf0 | 465 | emacs_close (filefd); |
6f89d28a MB |
466 | report_file_error ("Opening process output file", |
467 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 468 | } |
6f89d28a | 469 | fd[0] = filefd; |
2610078a | 470 | fd[1] = outfilefd; |
6f89d28a | 471 | #endif /* MSDOS */ |
7e6c2178 | 472 | |
d50d3dc8 | 473 | if (INTEGERP (buffer)) |
68c45bf0 | 474 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
475 | else |
476 | { | |
7e6c2178 | 477 | #ifndef MSDOS |
db92b288 GM |
478 | errno = 0; |
479 | if (pipe (fd) == -1) | |
480 | { | |
481 | emacs_close (filefd); | |
482 | report_file_error ("Creating process pipe", Qnil); | |
483 | } | |
80856e74 JB |
484 | #endif |
485 | } | |
486 | ||
487 | { | |
488 | /* child_setup must clobber environ in systems with true vfork. | |
489 | Protect it from permanent change. */ | |
490 | register char **save_environ = environ; | |
491 | register int fd1 = fd[1]; | |
39eaa782 | 492 | int fd_error = fd1; |
80856e74 JB |
493 | |
494 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 495 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
496 | #endif |
497 | ||
498 | /* Record that we're about to create a synchronous process. */ | |
499 | synch_process_alive = 1; | |
500 | ||
5c03767e RS |
501 | /* These vars record information from process termination. |
502 | Clear them now before process can possibly terminate, | |
503 | to avoid timing error if process terminates soon. */ | |
504 | synch_process_death = 0; | |
505 | synch_process_retcode = 0; | |
6b61353c | 506 | synch_process_termsig = 0; |
5c03767e | 507 | |
39eaa782 | 508 | if (NILP (error_file)) |
68c45bf0 | 509 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
510 | else if (STRINGP (error_file)) |
511 | { | |
512 | #ifdef DOS_NT | |
d5db4077 | 513 | fd_error = emacs_open (SDATA (error_file), |
68c45bf0 PE |
514 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
515 | S_IREAD | S_IWRITE); | |
39eaa782 | 516 | #else /* not DOS_NT */ |
d5db4077 | 517 | fd_error = creat (SDATA (error_file), 0666); |
39eaa782 RS |
518 | #endif /* not DOS_NT */ |
519 | } | |
520 | ||
521 | if (fd_error < 0) | |
522 | { | |
68c45bf0 | 523 | emacs_close (filefd); |
6f89d28a | 524 | if (fd[0] != filefd) |
68c45bf0 | 525 | emacs_close (fd[0]); |
39eaa782 | 526 | if (fd1 >= 0) |
68c45bf0 | 527 | emacs_close (fd1); |
6f89d28a MB |
528 | #ifdef MSDOS |
529 | unlink (tempfile); | |
530 | #endif | |
34b87689 KH |
531 | if (NILP (error_file)) |
532 | error_file = build_string (NULL_DEVICE); | |
533 | else if (STRINGP (error_file)) | |
534 | error_file = DECODE_FILE (error_file); | |
535 | report_file_error ("Cannot redirect stderr", Fcons (error_file, Qnil)); | |
39eaa782 | 536 | } |
89e1ec1d | 537 | |
2610078a | 538 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 539 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
540 | exit status, not its PID, so we assign it to `synch_process_retcode' |
541 | below. */ | |
c17c4250 EZ |
542 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
543 | 0, current_dir); | |
39eaa782 | 544 | |
2610078a KH |
545 | /* Record that the synchronous process exited and note its |
546 | termination status. */ | |
547 | synch_process_alive = 0; | |
548 | synch_process_retcode = pid; | |
549 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 550 | { |
ca9c0567 | 551 | synchronize_system_messages_locale (); |
68c45bf0 PE |
552 | synch_process_death = strerror (errno); |
553 | } | |
2610078a | 554 | |
68c45bf0 | 555 | emacs_close (outfilefd); |
2610078a | 556 | if (fd_error != outfilefd) |
68c45bf0 | 557 | emacs_close (fd_error); |
2610078a | 558 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
559 | /* Since CRLF is converted to LF within `decode_coding', we can |
560 | always open a file with binary mode. */ | |
68c45bf0 | 561 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
562 | if (fd[0] < 0) |
563 | { | |
564 | unlink (tempfile); | |
68c45bf0 | 565 | emacs_close (filefd); |
2610078a KH |
566 | report_file_error ("Cannot re-open temporary file", Qnil); |
567 | } | |
568 | #else /* not MSDOS */ | |
bad95d8f | 569 | #ifdef WINDOWSNT |
2d607244 RS |
570 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
571 | 0, current_dir); | |
bad95d8f | 572 | #else /* not WINDOWSNT */ |
aba637ec KS |
573 | BLOCK_INPUT; |
574 | ||
80856e74 JB |
575 | pid = vfork (); |
576 | ||
577 | if (pid == 0) | |
578 | { | |
579 | if (fd[0] >= 0) | |
68c45bf0 | 580 | emacs_close (fd[0]); |
1e7963c7 RS |
581 | #ifdef HAVE_SETSID |
582 | setsid (); | |
583 | #endif | |
584 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
585 | setpgrp (); |
586 | #else | |
587 | setpgrp (pid, pid); | |
588 | #endif /* USG */ | |
2d607244 RS |
589 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
590 | 0, current_dir); | |
80856e74 | 591 | } |
aba637ec KS |
592 | |
593 | UNBLOCK_INPUT; | |
bad95d8f | 594 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
595 | |
596 | /* The MSDOS case did this already. */ | |
597 | if (fd_error >= 0) | |
68c45bf0 | 598 | emacs_close (fd_error); |
2610078a | 599 | #endif /* not MSDOS */ |
80856e74 | 600 | |
80856e74 JB |
601 | environ = save_environ; |
602 | ||
6b6e798b RS |
603 | /* Close most of our fd's, but not fd[0] |
604 | since we will use that to read input from. */ | |
68c45bf0 | 605 | emacs_close (filefd); |
799abb26 | 606 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 607 | emacs_close (fd1); |
80856e74 JB |
608 | } |
609 | ||
610 | if (pid < 0) | |
611 | { | |
6b6e798b | 612 | if (fd[0] >= 0) |
68c45bf0 | 613 | emacs_close (fd[0]); |
80856e74 JB |
614 | report_file_error ("Doing vfork", Qnil); |
615 | } | |
616 | ||
d50d3dc8 | 617 | if (INTEGERP (buffer)) |
80856e74 | 618 | { |
6b6e798b | 619 | if (fd[0] >= 0) |
68c45bf0 | 620 | emacs_close (fd[0]); |
80856e74 | 621 | #ifndef subprocesses |
e576cab4 JB |
622 | /* If Emacs has been built with asynchronous subprocess support, |
623 | we don't need to do this, I think because it will then have | |
624 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
625 | wait_without_blocking (); |
626 | #endif /* subprocesses */ | |
80856e74 JB |
627 | return Qnil; |
628 | } | |
629 | ||
6b6e798b | 630 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
631 | call_process_exited = 0; |
632 | ||
e39a993c | 633 | #if defined(MSDOS) |
7e6c2178 RS |
634 | /* MSDOS needs different cleanup information. */ |
635 | record_unwind_protect (call_process_cleanup, | |
ad3aaf33 AS |
636 | Fcons (Fcurrent_buffer (), |
637 | Fcons (make_number (fd[0]), | |
638 | build_string (tempfile)))); | |
7e6c2178 | 639 | #else |
80856e74 | 640 | record_unwind_protect (call_process_cleanup, |
ad3aaf33 AS |
641 | Fcons (Fcurrent_buffer (), |
642 | Fcons (make_number (fd[0]), make_number (pid)))); | |
e39a993c | 643 | #endif /* not MSDOS */ |
80856e74 JB |
644 | |
645 | ||
d50d3dc8 | 646 | if (BUFFERP (buffer)) |
80856e74 JB |
647 | Fset_buffer (buffer); |
648 | ||
09494912 RS |
649 | if (NILP (buffer)) |
650 | { | |
651 | /* If BUFFER is nil, we must read process output once and then | |
652 | discard it, so setup coding system but with nil. */ | |
653 | setup_coding_system (Qnil, &process_coding); | |
654 | } | |
655 | else | |
656 | { | |
657 | Lisp_Object val, *args2; | |
658 | ||
659 | val = Qnil; | |
660 | if (!NILP (Vcoding_system_for_read)) | |
661 | val = Vcoding_system_for_read; | |
662 | else | |
663 | { | |
664 | if (EQ (coding_systems, Qt)) | |
665 | { | |
666 | int i; | |
667 | ||
668 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
669 | args2[0] = Qcall_process; | |
670 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
671 | coding_systems | |
672 | = Ffind_operation_coding_system (nargs + 1, args2); | |
673 | } | |
674 | if (CONSP (coding_systems)) | |
70949dac | 675 | val = XCAR (coding_systems); |
09494912 | 676 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 677 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
678 | else |
679 | val = Qnil; | |
680 | } | |
91183bfd | 681 | Fcheck_coding_system (val); |
09494912 RS |
682 | /* In unibyte mode, character code conversion should not take |
683 | place but EOL conversion should. So, setup raw-text or one | |
684 | of the subsidiary according to the information just setup. */ | |
685 | if (NILP (current_buffer->enable_multibyte_characters) | |
686 | && !NILP (val)) | |
91183bfd KH |
687 | val = raw_text_coding_system (val); |
688 | setup_coding_system (val, &process_coding); | |
09494912 RS |
689 | } |
690 | ||
80856e74 JB |
691 | immediate_quit = 1; |
692 | QUIT; | |
693 | ||
694 | { | |
695 | register int nread; | |
0ad477db | 696 | int first = 1; |
6e3bfbb2 | 697 | int total_read = 0; |
321fecde | 698 | int carryover = 0; |
0aa2630f | 699 | int display_on_the_fly = display_p; |
05b44e90 KH |
700 | struct coding_system saved_coding; |
701 | ||
702 | saved_coding = process_coding; | |
60558b19 | 703 | while (1) |
80856e74 | 704 | { |
60558b19 RS |
705 | /* Repeatedly read until we've filled as much as possible |
706 | of the buffer size we have. But don't read | |
8e6208c5 | 707 | less than 1024--save that for the next bufferful. */ |
321fecde | 708 | nread = carryover; |
60558b19 | 709 | while (nread < bufsize - 1024) |
00fb3e95 | 710 | { |
4da256b1 | 711 | int this_read = emacs_read (fd[0], buf + nread, |
68c45bf0 | 712 | bufsize - nread); |
60558b19 RS |
713 | |
714 | if (this_read < 0) | |
715 | goto give_up; | |
716 | ||
717 | if (this_read == 0) | |
7a7ab107 KH |
718 | { |
719 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
720 | break; | |
721 | } | |
60558b19 RS |
722 | |
723 | nread += this_read; | |
7a7ab107 | 724 | total_read += this_read; |
60558b19 | 725 | |
7a7ab107 KH |
726 | if (display_on_the_fly) |
727 | break; | |
728 | } | |
60558b19 RS |
729 | |
730 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 731 | immediate_quit = 0; |
177c0ea7 | 732 | |
012c6fcb | 733 | if (!NILP (buffer)) |
32d08644 | 734 | { |
bb4a3884 KH |
735 | if (NILP (current_buffer->enable_multibyte_characters) |
736 | && ! CODING_MAY_REQUIRE_DECODING (&process_coding)) | |
4da256b1 | 737 | insert_1_both (buf, nread, nread, 0, 1, 0); |
32d08644 KH |
738 | else |
739 | { /* We have to decode the input. */ | |
45d60801 | 740 | Lisp_Object curbuf; |
71a0c011 | 741 | int count1 = SPECPDL_INDEX (); |
177c0ea7 | 742 | |
45d60801 | 743 | XSETBUFFER (curbuf, current_buffer); |
71a0c011 EZ |
744 | /* We cannot allow after-change-functions be run |
745 | during decoding, because that might modify the | |
746 | buffer, while we rely on process_coding.produced to | |
747 | faithfully reflect inserted text until we | |
748 | TEMP_SET_PT_BOTH below. */ | |
749 | specbind (Qinhibit_modification_hooks, Qt); | |
45d60801 KH |
750 | decode_coding_c_string (&process_coding, buf, nread, |
751 | curbuf); | |
71a0c011 | 752 | unbind_to (count1, Qnil); |
7a7ab107 | 753 | if (display_on_the_fly |
91183bfd KH |
754 | && CODING_REQUIRE_DETECTION (&saved_coding) |
755 | && ! CODING_REQUIRE_DETECTION (&process_coding)) | |
7a7ab107 KH |
756 | { |
757 | /* We have detected some coding system. But, | |
758 | there's a possibility that the detection was | |
759 | done by insufficient data. So, we give up | |
760 | displaying on the fly. */ | |
91183bfd KH |
761 | if (process_coding.produced > 0) |
762 | del_range_2 (process_coding.dst_pos, | |
763 | process_coding.dst_pos_byte, | |
764 | process_coding.dst_pos | |
765 | + process_coding.produced_char, | |
766 | process_coding.dst_pos_byte | |
767 | + process_coding.produced, 0); | |
7a7ab107 KH |
768 | display_on_the_fly = 0; |
769 | process_coding = saved_coding; | |
770 | carryover = nread; | |
0aa2630f KS |
771 | /* This is to make the above condition always |
772 | fails in the future. */ | |
21d0467f KH |
773 | saved_coding.common_flags |
774 | &= ~CODING_REQUIRE_DETECTION_MASK; | |
7a7ab107 KH |
775 | continue; |
776 | } | |
177c0ea7 | 777 | |
ea99bcc1 KH |
778 | TEMP_SET_PT_BOTH (PT + process_coding.produced_char, |
779 | PT_BYTE + process_coding.produced); | |
54ab3d3b | 780 | carryover = process_coding.carryover_bytes; |
321fecde | 781 | if (carryover > 0) |
c5bfa12b KH |
782 | /* As CARRYOVER should not be that large, we had |
783 | better avoid overhead of bcopy. */ | |
45d60801 | 784 | BCOPY_SHORT (process_coding.carryover, buf, |
54ab3d3b | 785 | process_coding.carryover_bytes); |
32d08644 KH |
786 | } |
787 | } | |
c5bfa12b | 788 | |
321fecde | 789 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 790 | break; |
6e3bfbb2 RS |
791 | |
792 | /* Make the buffer bigger as we continue to read more data, | |
4da256b1 KS |
793 | but not past CALLPROC_BUFFER_SIZE_MAX. */ |
794 | if (bufsize < CALLPROC_BUFFER_SIZE_MAX && total_read > 32 * bufsize) | |
795 | if ((bufsize *= 2) > CALLPROC_BUFFER_SIZE_MAX) | |
796 | bufsize = CALLPROC_BUFFER_SIZE_MAX; | |
6e3bfbb2 | 797 | |
0aa2630f | 798 | if (display_p) |
0ad477db RS |
799 | { |
800 | if (first) | |
801 | prepare_menu_bars (); | |
802 | first = 0; | |
3007ebfb | 803 | redisplay_preserve_echo_area (1); |
0aa2630f KS |
804 | /* This variable might have been set to 0 for code |
805 | detection. In that case, we set it back to 1 because | |
806 | we should have already detected a coding system. */ | |
807 | display_on_the_fly = 1; | |
0ad477db | 808 | } |
80856e74 JB |
809 | immediate_quit = 1; |
810 | QUIT; | |
811 | } | |
60558b19 | 812 | give_up: ; |
80856e74 | 813 | |
91183bfd KH |
814 | Vlast_coding_system_used = CODING_ID_NAME (process_coding.id); |
815 | /* If the caller required, let the buffer inherit the | |
816 | coding-system used to decode the process output. */ | |
817 | if (inherit_process_coding_system) | |
818 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
ad3aaf33 | 819 | make_number (total_read)); |
3b440bb5 EZ |
820 | } |
821 | ||
80856e74 JB |
822 | /* Wait for it to terminate, unless it already has. */ |
823 | wait_for_termination (pid); | |
824 | ||
825 | immediate_quit = 0; | |
826 | ||
37d54121 RS |
827 | /* Don't kill any children that the subprocess may have left behind |
828 | when exiting. */ | |
829 | call_process_exited = 1; | |
830 | ||
80856e74 JB |
831 | unbind_to (count, Qnil); |
832 | ||
6b61353c KH |
833 | if (synch_process_termsig) |
834 | { | |
835 | char *signame; | |
836 | ||
837 | synchronize_system_messages_locale (); | |
838 | signame = strsignal (synch_process_termsig); | |
839 | ||
840 | if (signame == 0) | |
841 | signame = "unknown"; | |
842 | ||
843 | synch_process_death = signame; | |
844 | } | |
845 | ||
80856e74 | 846 | if (synch_process_death) |
68c45bf0 PE |
847 | return code_convert_string_norecord (build_string (synch_process_death), |
848 | Vlocale_coding_system, 0); | |
80856e74 JB |
849 | return make_number (synch_process_retcode); |
850 | } | |
80856e74 | 851 | \f |
9fefd2ba | 852 | static Lisp_Object |
80856e74 JB |
853 | delete_temp_file (name) |
854 | Lisp_Object name; | |
855 | { | |
1a271e14 KR |
856 | /* Suppress jka-compr handling, etc. */ |
857 | int count = SPECPDL_INDEX (); | |
858 | specbind (intern ("file-name-handler-alist"), Qnil); | |
2e3dc201 | 859 | internal_delete_file (name); |
1a271e14 | 860 | unbind_to (count, Qnil); |
320695d8 | 861 | return Qnil; |
80856e74 JB |
862 | } |
863 | ||
864 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
fdb82f93 PJ |
865 | 3, MANY, 0, |
866 | doc: /* Send text from START to END to a synchronous process running PROGRAM. | |
867 | The remaining arguments are optional. | |
868 | Delete the text if fourth arg DELETE is non-nil. | |
869 | ||
870 | Insert output in BUFFER before point; t means current buffer; | |
871 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
872 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
873 | REAL-BUFFER says what to do with standard output, as above, | |
874 | while STDERR-FILE says what to do with standard error in the child. | |
875 | STDERR-FILE may be nil (discard standard error output), | |
876 | t (mix it with ordinary output), or a file name string. | |
877 | ||
878 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
879 | Remaining args are passed to PROGRAM at startup as command args. | |
880 | ||
ba9a5174 | 881 | If BUFFER is 0, `call-process-region' returns immediately with value nil. |
fdb82f93 PJ |
882 | Otherwise it waits for PROGRAM to terminate |
883 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
884 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
885 | ||
886 | usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 887 | (nargs, args) |
80856e74 JB |
888 | int nargs; |
889 | register Lisp_Object *args; | |
890 | { | |
39323a7e KH |
891 | struct gcpro gcpro1; |
892 | Lisp_Object filename_string; | |
893 | register Lisp_Object start, end; | |
aed13378 | 894 | int count = SPECPDL_INDEX (); |
08ee4e87 | 895 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 896 | Lisp_Object coding_systems; |
32d08644 KH |
897 | Lisp_Object val, *args2; |
898 | int i; | |
7e6c2178 | 899 | char *tempfile; |
f92d51d8 | 900 | Lisp_Object tmpdir, pattern; |
7e6c2178 | 901 | |
f92d51d8 CY |
902 | if (STRINGP (Vtemporary_file_directory)) |
903 | tmpdir = Vtemporary_file_directory; | |
7e6c2178 RS |
904 | else |
905 | { | |
f92d51d8 CY |
906 | #ifndef DOS_NT |
907 | if (getenv ("TMPDIR")) | |
908 | tmpdir = build_string (getenv ("TMPDIR")); | |
909 | else | |
910 | tmpdir = build_string ("/tmp/"); | |
911 | #else /* DOS_NT */ | |
912 | char *outf; | |
913 | if ((outf = egetenv ("TMPDIR")) | |
914 | || (outf = egetenv ("TMP")) | |
915 | || (outf = egetenv ("TEMP"))) | |
916 | tmpdir = build_string (outf); | |
917 | else | |
918 | tmpdir = Ffile_name_as_directory (build_string ("c:/temp")); | |
0774fcf8 | 919 | #endif |
f92d51d8 | 920 | } |
7e6c2178 | 921 | |
f92d51d8 CY |
922 | pattern = Fexpand_file_name (Vtemp_file_name_pattern, tmpdir); |
923 | tempfile = (char *) alloca (SBYTES (pattern) + 1); | |
924 | bcopy (SDATA (pattern), tempfile, SBYTES (pattern) + 1); | |
09494912 RS |
925 | coding_systems = Qt; |
926 | ||
1ddc85a4 DL |
927 | #ifdef HAVE_MKSTEMP |
928 | { | |
d277f1f7 YM |
929 | int fd; |
930 | ||
931 | BLOCK_INPUT; | |
932 | fd = mkstemp (tempfile); | |
933 | UNBLOCK_INPUT; | |
1ddc85a4 DL |
934 | if (fd == -1) |
935 | report_file_error ("Failed to open temporary file", | |
936 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
937 | else | |
938 | close (fd); | |
939 | } | |
940 | #else | |
80856e74 | 941 | mktemp (tempfile); |
1ddc85a4 | 942 | #endif |
80856e74 JB |
943 | |
944 | filename_string = build_string (tempfile); | |
39323a7e | 945 | GCPRO1 (filename_string); |
80856e74 JB |
946 | start = args[0]; |
947 | end = args[1]; | |
32d08644 | 948 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
949 | if (!NILP (Vcoding_system_for_write)) |
950 | val = Vcoding_system_for_write; | |
951 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
fcaf8878 | 952 | val = Qraw_text; |
32d08644 | 953 | else |
beacaab3 | 954 | { |
91489411 RS |
955 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
956 | args2[0] = Qcall_process_region; | |
957 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
958 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
fcaf8878 | 959 | val = CONSP (coding_systems) ? XCDR (coding_systems) : Qnil; |
beacaab3 | 960 | } |
fcaf8878 | 961 | val = complement_process_encoding_system (val); |
32d08644 | 962 | |
168afdaa | 963 | { |
aed13378 | 964 | int count1 = SPECPDL_INDEX (); |
168afdaa RS |
965 | |
966 | specbind (intern ("coding-system-for-write"), val); | |
bb951f0e KR |
967 | /* POSIX lets mk[s]temp use "."; don't invoke jka-compr if we |
968 | happen to get a ".Z" suffix. */ | |
969 | specbind (intern ("file-name-handler-alist"), Qnil); | |
168afdaa RS |
970 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); |
971 | ||
972 | unbind_to (count1, Qnil); | |
973 | } | |
91489411 | 974 | |
177c0ea7 | 975 | /* Note that Fcall_process takes care of binding |
91489411 | 976 | coding-system-for-read. */ |
093650fe | 977 | |
80856e74 JB |
978 | record_unwind_protect (delete_temp_file, filename_string); |
979 | ||
edf496dd | 980 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
981 | Fdelete_region (start, end); |
982 | ||
edf496dd KH |
983 | if (nargs > 3) |
984 | { | |
985 | args += 2; | |
986 | nargs -= 2; | |
987 | } | |
988 | else | |
989 | { | |
990 | args[0] = args[2]; | |
991 | nargs = 2; | |
992 | } | |
993 | args[1] = filename_string; | |
80856e74 | 994 | |
edf496dd | 995 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
996 | } |
997 | \f | |
dfcf069d AS |
998 | static int relocate_fd (); |
999 | ||
5990851d KL |
1000 | static char ** |
1001 | add_env (char **env, char **new_env, char *string) | |
1002 | { | |
1003 | char **ep; | |
1004 | int ok = 1; | |
1005 | if (string == NULL) | |
1006 | return new_env; | |
1007 | ||
1008 | /* See if this string duplicates any string already in the env. | |
1009 | If so, don't put it in. | |
1010 | When an env var has multiple definitions, | |
1011 | we keep the definition that comes first in process-environment. */ | |
1012 | for (ep = env; ok && ep != new_env; ep++) | |
1013 | { | |
1014 | char *p = *ep, *q = string; | |
1015 | while (ok) | |
1016 | { | |
1017 | if (*q != *p) | |
1018 | break; | |
1019 | if (*q == 0) | |
1020 | /* The string is a lone variable name; keep it for now, we | |
1021 | will remove it later. It is a placeholder for a | |
1022 | variable that is not to be included in the environment. */ | |
1023 | break; | |
1024 | if (*q == '=') | |
1025 | ok = 0; | |
1026 | p++, q++; | |
1027 | } | |
1028 | } | |
1029 | if (ok) | |
1030 | *new_env++ = string; | |
1031 | return new_env; | |
1032 | } | |
1033 | ||
80856e74 JB |
1034 | /* This is the last thing run in a newly forked inferior |
1035 | either synchronous or asynchronous. | |
1036 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1037 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1038 | then exec another program based on new_argv. | |
1039 | ||
1040 | This function may change environ for the superior process. | |
1041 | Therefore, the superior process must save and restore the value | |
1042 | of environ around the vfork and the call to this function. | |
1043 | ||
80856e74 | 1044 | SET_PGRP is nonzero if we should put the subprocess into a separate |
177c0ea7 | 1045 | process group. |
e576cab4 JB |
1046 | |
1047 | CURRENT_DIR is an elisp string giving the path of the current | |
1048 | directory the subprocess should have. Since we can't really signal | |
1049 | a decent error from within the child, this should be verified as an | |
1050 | executable directory by the parent. */ | |
80856e74 | 1051 | |
dfcf069d | 1052 | int |
e576cab4 | 1053 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1054 | int in, out, err; |
1055 | register char **new_argv; | |
80856e74 | 1056 | int set_pgrp; |
e576cab4 | 1057 | Lisp_Object current_dir; |
80856e74 | 1058 | { |
e576cab4 | 1059 | char **env; |
7fcf7f05 | 1060 | char *pwd_var; |
bad95d8f RS |
1061 | #ifdef WINDOWSNT |
1062 | int cpid; | |
4252a4bd | 1063 | HANDLE handles[3]; |
bad95d8f | 1064 | #endif /* WINDOWSNT */ |
e576cab4 | 1065 | |
33abe2d9 | 1066 | int pid = getpid (); |
80856e74 | 1067 | |
68d10241 | 1068 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 | 1069 | { |
31ade731 | 1070 | extern EMACS_INT emacs_priority; |
4f0b9d49 | 1071 | |
68d10241 RS |
1072 | if (emacs_priority < 0) |
1073 | nice (- emacs_priority); | |
4f0b9d49 | 1074 | } |
5b633aeb | 1075 | #endif |
80856e74 JB |
1076 | |
1077 | #ifdef subprocesses | |
1078 | /* Close Emacs's descriptors that this process should not have. */ | |
1079 | close_process_descs (); | |
1080 | #endif | |
c17c4250 EZ |
1081 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1082 | we will lose if we call close_load_descs here. */ | |
1083 | #ifndef DOS_NT | |
4458cebe | 1084 | close_load_descs (); |
c17c4250 | 1085 | #endif |
80856e74 JB |
1086 | |
1087 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1088 | that do not have true vfork or that have true (stack) alloca. | |
caa01fe0 GM |
1089 | If using vfork and C_ALLOCA (when Emacs used to include |
1090 | src/alloca.c) it is safe because that changes the superior's | |
1091 | static variables as if the superior had done alloca and will be | |
1092 | cleaned up in the usual way. */ | |
e576cab4 | 1093 | { |
7fcf7f05 | 1094 | register char *temp; |
e576cab4 | 1095 | register int i; |
77d78be1 | 1096 | |
d5db4077 | 1097 | i = SBYTES (current_dir); |
16425c4a EZ |
1098 | #ifdef MSDOS |
1099 | /* MSDOS must have all environment variables malloc'ed, because | |
1100 | low-level libc functions that launch subsidiary processes rely | |
1101 | on that. */ | |
1102 | pwd_var = (char *) xmalloc (i + 6); | |
1103 | #else | |
7fcf7f05 | 1104 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1105 | #endif |
7fcf7f05 RS |
1106 | temp = pwd_var + 4; |
1107 | bcopy ("PWD=", pwd_var, 4); | |
d5db4077 | 1108 | bcopy (SDATA (current_dir), temp, i); |
bad95d8f | 1109 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1110 | temp[i] = 0; |
1111 | ||
c17c4250 | 1112 | #ifndef DOS_NT |
e576cab4 JB |
1113 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1114 | the callers check the current directory before forking, this | |
1115 | should only return an error if the directory's permissions | |
1116 | are changed between the check and this chdir, but we should | |
1117 | at least check. */ | |
1118 | if (chdir (temp) < 0) | |
20b25e46 | 1119 | _exit (errno); |
f8d23104 | 1120 | #else /* DOS_NT */ |
c17c4250 EZ |
1121 | /* Get past the drive letter, so that d:/ is left alone. */ |
1122 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1123 | { | |
1124 | temp += 2; | |
1125 | i -= 2; | |
1126 | } | |
f8d23104 | 1127 | #endif /* DOS_NT */ |
c17c4250 | 1128 | |
7fcf7f05 | 1129 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1130 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1131 | temp[--i] = 0; |
e576cab4 | 1132 | } |
80856e74 | 1133 | |
5990851d | 1134 | /* Set `env' to a vector of the strings in the environment. */ |
80856e74 JB |
1135 | { |
1136 | register Lisp_Object tem; | |
1137 | register char **new_env; | |
5990851d | 1138 | char **p, **q; |
80856e74 | 1139 | register int new_length; |
d2bb6598 | 1140 | Lisp_Object display = Qnil; |
de87fb59 | 1141 | |
80856e74 | 1142 | new_length = 0; |
f105f403 | 1143 | |
80856e74 | 1144 | for (tem = Vprocess_environment; |
5990851d KL |
1145 | CONSP (tem) && STRINGP (XCAR (tem)); |
1146 | tem = XCDR (tem)) | |
d2bb6598 SM |
1147 | { |
1148 | if (strncmp (SDATA (XCAR (tem)), "DISPLAY", 7) == 0 | |
1149 | && (SDATA (XCAR (tem)) [7] == '\0' | |
1150 | || SDATA (XCAR (tem)) [7] == '=')) | |
1151 | /* DISPLAY is specified in process-environment. */ | |
1152 | display = Qt; | |
1153 | new_length++; | |
1154 | } | |
de87fb59 | 1155 | |
d2bb6598 SM |
1156 | /* If not provided yet, use the frame's DISPLAY. */ |
1157 | if (NILP (display)) | |
1158 | { | |
1159 | Lisp_Object tmp = Fframe_parameter (selected_frame, Qdisplay); | |
1160 | if (!STRINGP (tmp) && CONSP (Vinitial_environment)) | |
1161 | /* If still not found, Look for DISPLAY in Vinitial_environment. */ | |
1162 | tmp = Fgetenv_internal (build_string ("DISPLAY"), | |
1163 | Vinitial_environment); | |
1164 | if (STRINGP (tmp)) | |
1165 | { | |
1166 | display = tmp; | |
1167 | new_length++; | |
1168 | } | |
1169 | } | |
80856e74 | 1170 | |
7fcf7f05 RS |
1171 | /* new_length + 2 to include PWD and terminating 0. */ |
1172 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
7fcf7f05 RS |
1173 | /* If we have a PWD envvar, pass one down, |
1174 | but with corrected value. */ | |
a13f8f50 | 1175 | if (egetenv ("PWD")) |
7fcf7f05 | 1176 | *new_env++ = pwd_var; |
5990851d | 1177 | |
6b8e474c | 1178 | if (STRINGP (display)) |
de87fb59 DN |
1179 | { |
1180 | int vlen = strlen ("DISPLAY=") + strlen (SDATA (display)) + 1; | |
1181 | char *vdata = (char *) alloca (vlen); | |
1182 | strcpy (vdata, "DISPLAY="); | |
1183 | strcat (vdata, SDATA (display)); | |
1184 | new_env = add_env (env, new_env, vdata); | |
1185 | } | |
80856e74 | 1186 | |
5990851d | 1187 | /* Overrides. */ |
80856e74 | 1188 | for (tem = Vprocess_environment; |
70949dac KR |
1189 | CONSP (tem) && STRINGP (XCAR (tem)); |
1190 | tem = XCDR (tem)) | |
5990851d | 1191 | new_env = add_env (env, new_env, SDATA (XCAR (tem))); |
d2bb6598 | 1192 | |
5990851d KL |
1193 | *new_env = 0; |
1194 | ||
1195 | /* Remove variable names without values. */ | |
1196 | p = q = env; | |
1197 | while (*p != 0) | |
cd9565ba | 1198 | { |
5990851d | 1199 | while (*q != 0 && strchr (*q, '=') == NULL) |
1baf6db9 | 1200 | q++; |
5990851d KL |
1201 | *p = *q++; |
1202 | if (*p != 0) | |
1203 | p++; | |
cd9565ba | 1204 | } |
80856e74 | 1205 | } |
de87fb59 DN |
1206 | |
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 | 1320 | static int |
db699fc6 | 1321 | getenv_internal_1 (var, varlen, value, valuelen, env) |
012c6fcb JA |
1322 | char *var; |
1323 | int varlen; | |
1324 | char **value; | |
1325 | int *valuelen; | |
db699fc6 | 1326 | Lisp_Object env; |
012c6fcb | 1327 | { |
db699fc6 | 1328 | for (; CONSP (env); env = XCDR (env)) |
012c6fcb | 1329 | { |
db699fc6 | 1330 | Lisp_Object entry = XCAR (env); |
d50d3dc8 | 1331 | if (STRINGP (entry) |
db699fc6 | 1332 | && SBYTES (entry) >= varlen |
bad95d8f RS |
1333 | #ifdef WINDOWSNT |
1334 | /* NT environment variables are case insensitive. */ | |
d5db4077 | 1335 | && ! strnicmp (SDATA (entry), var, varlen) |
bad95d8f | 1336 | #else /* not WINDOWSNT */ |
d5db4077 | 1337 | && ! bcmp (SDATA (entry), var, varlen) |
bad95d8f | 1338 | #endif /* not WINDOWSNT */ |
a9971c6d | 1339 | ) |
012c6fcb | 1340 | { |
db699fc6 SM |
1341 | if (SBYTES (entry) > varlen && SREF (entry, varlen) == '=') |
1342 | { | |
1343 | *value = (char *) SDATA (entry) + (varlen + 1); | |
1344 | *valuelen = SBYTES (entry) - (varlen + 1); | |
1345 | return 1; | |
1346 | } | |
1347 | else if (SBYTES (entry) == varlen) | |
1348 | { | |
1349 | /* Lone variable names in Vprocess_environment mean that | |
1350 | variable should be removed from the environment. */ | |
1351 | *value = NULL; | |
1352 | return 1; | |
1353 | } | |
1354 | } | |
1355 | } | |
1356 | return 0; | |
1357 | } | |
1358 | ||
012c6fcb | 1359 | static int |
da8e8fc1 | 1360 | getenv_internal (var, varlen, value, valuelen, frame) |
012c6fcb JA |
1361 | char *var; |
1362 | int varlen; | |
1363 | char **value; | |
1364 | int *valuelen; | |
da8e8fc1 | 1365 | Lisp_Object frame; |
012c6fcb | 1366 | { |
d2bb6598 SM |
1367 | /* Try to find VAR in Vprocess_environment first. */ |
1368 | if (getenv_internal_1 (var, varlen, value, valuelen, | |
1369 | Vprocess_environment)) | |
1370 | return *value ? 1 : 0; | |
f105f403 | 1371 | |
d2bb6598 | 1372 | /* For DISPLAY try to get the values from the frame or the initial env. */ |
de87fb59 | 1373 | if (strcmp (var, "DISPLAY") == 0) |
d2bb6598 SM |
1374 | { |
1375 | Lisp_Object display | |
1376 | = Fframe_parameter (NILP (frame) ? selected_frame : frame, Qdisplay); | |
1377 | if (STRINGP (display)) | |
1378 | { | |
de87fb59 DN |
1379 | *value = (char *) SDATA (display); |
1380 | *valuelen = SBYTES (display); | |
012c6fcb JA |
1381 | return 1; |
1382 | } | |
d2bb6598 SM |
1383 | /* If still not found, Look for DISPLAY in Vinitial_environment. */ |
1384 | if (getenv_internal_1 (var, varlen, value, valuelen, | |
1385 | Vinitial_environment)) | |
1386 | return *value ? 1 : 0; | |
012c6fcb JA |
1387 | } |
1388 | ||
1389 | return 0; | |
1390 | } | |
1391 | ||
f105f403 | 1392 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 2, 0, |
5990851d KL |
1393 | doc: /* Get the value of environment variable VARIABLE. |
1394 | VARIABLE should be a string. Value is nil if VARIABLE is undefined in | |
1395 | the environment. Otherwise, value is a string. | |
f105f403 | 1396 | |
acf20901 | 1397 | This function searches `process-environment' for VARIABLE. |
5990851d | 1398 | |
db699fc6 | 1399 | If optional parameter ENV is a list, then search this list instead of |
acf20901 JB |
1400 | `process-environment', and return t when encountering a negative entry |
1401 | \(an entry for a variable with no value). */) | |
db699fc6 SM |
1402 | (variable, env) |
1403 | Lisp_Object variable, env; | |
012c6fcb JA |
1404 | { |
1405 | char *value; | |
1406 | int valuelen; | |
1407 | ||
5990851d | 1408 | CHECK_STRING (variable); |
db699fc6 SM |
1409 | if (CONSP (env)) |
1410 | { | |
1411 | if (getenv_internal_1 (SDATA (variable), SBYTES (variable), | |
1412 | &value, &valuelen, env)) | |
1413 | return value ? make_string (value, valuelen) : Qt; | |
1414 | else | |
1415 | return Qnil; | |
1416 | } | |
1417 | else if (getenv_internal (SDATA (variable), SBYTES (variable), | |
d2bb6598 | 1418 | &value, &valuelen, env)) |
012c6fcb JA |
1419 | return make_string (value, valuelen); |
1420 | else | |
1421 | return Qnil; | |
1422 | } | |
1423 | ||
5990851d KL |
1424 | /* A version of getenv that consults the Lisp environment lists, |
1425 | easily callable from C. */ | |
012c6fcb JA |
1426 | char * |
1427 | egetenv (var) | |
e576cab4 | 1428 | char *var; |
012c6fcb JA |
1429 | { |
1430 | char *value; | |
1431 | int valuelen; | |
1432 | ||
f105f403 | 1433 | if (getenv_internal (var, strlen (var), &value, &valuelen, Qnil)) |
012c6fcb JA |
1434 | return value; |
1435 | else | |
1436 | return 0; | |
1437 | } | |
1438 | ||
80856e74 | 1439 | \f |
8de15d69 | 1440 | /* This is run before init_cmdargs. */ |
177c0ea7 | 1441 | |
dfcf069d | 1442 | void |
8de15d69 RS |
1443 | init_callproc_1 () |
1444 | { | |
1445 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1446 | char *doc_dir = egetenv ("EMACSDOC"); |
1447 | ||
8de15d69 | 1448 | Vdata_directory |
177c0ea7 | 1449 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1450 | : PATH_DATA)); |
35a2f4b8 KH |
1451 | Vdoc_directory |
1452 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1453 | : PATH_DOC)); | |
9453ea7b | 1454 | |
e576cab4 | 1455 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1456 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1457 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1458 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1459 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1460 | } |
1461 | ||
e17f7533 | 1462 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1463 | |
dfcf069d | 1464 | void |
8de15d69 RS |
1465 | init_callproc () |
1466 | { | |
1467 | char *data_dir = egetenv ("EMACSDATA"); | |
177c0ea7 | 1468 | |
8de15d69 RS |
1469 | register char * sh; |
1470 | Lisp_Object tempdir; | |
1471 | ||
9cc4fad5 | 1472 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1473 | { |
05630743 RS |
1474 | /* Add to the path the lib-src subdir of the installation dir. */ |
1475 | Lisp_Object tem; | |
1476 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1477 | Vinstallation_directory); | |
bad95d8f | 1478 | #ifndef DOS_NT |
1a6640ec | 1479 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc | 1480 | if (NILP (Fmember (tem, Vexec_path))) |
70ec1377 RS |
1481 | { |
1482 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); | |
1483 | Vexec_path = Fcons (tem, Vexec_path); | |
1484 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
1485 | } | |
177c0ea7 | 1486 | |
0fa248bc | 1487 | Vexec_directory = Ffile_name_as_directory (tem); |
bad95d8f | 1488 | #endif /* not DOS_NT */ |
8de15d69 | 1489 | |
e17f7533 RS |
1490 | /* Maybe use ../etc as well as ../lib-src. */ |
1491 | if (data_dir == 0) | |
1492 | { | |
1493 | tem = Fexpand_file_name (build_string ("etc"), | |
1494 | Vinstallation_directory); | |
1495 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1496 | } |
1497 | } | |
7e933683 RS |
1498 | |
1499 | /* Look for the files that should be in etc. We don't use | |
1500 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1501 | near the executable, and they are never in the build |
7e933683 RS |
1502 | directory when that's different from the source directory. |
1503 | ||
1504 | Instead, if these files are not in the nominal place, we try the | |
1505 | source directory. */ | |
1506 | if (data_dir == 0) | |
1507 | { | |
70ec1377 | 1508 | Lisp_Object tem, tem1, srcdir; |
7e933683 | 1509 | |
70ec1377 RS |
1510 | srcdir = Fexpand_file_name (build_string ("../src/"), |
1511 | build_string (PATH_DUMPLOADSEARCH)); | |
7e933683 RS |
1512 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); |
1513 | tem1 = Ffile_exists_p (tem); | |
70ec1377 | 1514 | if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1)) |
7e933683 | 1515 | { |
70ec1377 | 1516 | Lisp_Object newdir; |
7e933683 RS |
1517 | newdir = Fexpand_file_name (build_string ("../etc/"), |
1518 | build_string (PATH_DUMPLOADSEARCH)); | |
1519 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1520 | tem1 = Ffile_exists_p (tem); | |
1521 | if (!NILP (tem1)) | |
1522 | Vdata_directory = newdir; | |
1523 | } | |
1524 | } | |
80856e74 | 1525 | |
d883eb62 RS |
1526 | #ifndef CANNOT_DUMP |
1527 | if (initialized) | |
1528 | #endif | |
1529 | { | |
1530 | tempdir = Fdirectory_file_name (Vexec_directory); | |
d5db4077 | 1531 | if (access (SDATA (tempdir), 0) < 0) |
d883eb62 RS |
1532 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", |
1533 | Vexec_directory); | |
1534 | } | |
80856e74 | 1535 | |
e576cab4 | 1536 | tempdir = Fdirectory_file_name (Vdata_directory); |
d5db4077 | 1537 | if (access (SDATA (tempdir), 0) < 0) |
76d5c6cf RS |
1538 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1539 | Vdata_directory); | |
e576cab4 | 1540 | |
e576cab4 | 1541 | sh = (char *) getenv ("SHELL"); |
80856e74 | 1542 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
8abd035b | 1543 | |
40b49d4b JB |
1544 | #ifdef DOS_NT |
1545 | Vshared_game_score_directory = Qnil; | |
1546 | #else | |
63789758 RS |
1547 | Vshared_game_score_directory = build_string (PATH_GAME); |
1548 | if (NILP (Ffile_directory_p (Vshared_game_score_directory))) | |
1549 | Vshared_game_score_directory = Qnil; | |
40b49d4b | 1550 | #endif |
9fefd2ba JB |
1551 | } |
1552 | ||
dfcf069d | 1553 | void |
a13f8f50 | 1554 | set_initial_environment () |
9fefd2ba JB |
1555 | { |
1556 | register char **envp; | |
80856e74 JB |
1557 | #ifndef CANNOT_DUMP |
1558 | if (initialized) | |
a13f8f50 | 1559 | { |
edfda783 AR |
1560 | #else |
1561 | { | |
1562 | Vprocess_environment = Qnil; | |
1563 | #endif | |
a13f8f50 | 1564 | for (envp = environ; *envp; envp++) |
de87fb59 DN |
1565 | Vprocess_environment = Fcons (build_string (*envp), |
1566 | Vprocess_environment); | |
3c33c79a SM |
1567 | /* Ideally, the `copy' shouldn't be necessary, but it seems it's frequent |
1568 | to use `delete' and friends on process-environment. */ | |
1569 | Vinitial_environment = Fcopy_sequence (Vprocess_environment); | |
a13f8f50 | 1570 | } |
80856e74 JB |
1571 | } |
1572 | ||
dfcf069d | 1573 | void |
80856e74 JB |
1574 | syms_of_callproc () |
1575 | { | |
bad95d8f | 1576 | #ifdef DOS_NT |
093650fe RS |
1577 | Qbuffer_file_type = intern ("buffer-file-type"); |
1578 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1579 | #endif /* DOS_NT */ |
7e6c2178 | 1580 | |
f92d51d8 CY |
1581 | #ifndef DOS_NT |
1582 | Vtemp_file_name_pattern = build_string ("emacsXXXXXX"); | |
1583 | #elif defined (WINDOWSNT) | |
1584 | Vtemp_file_name_pattern = build_string ("emXXXXXX"); | |
1585 | #else | |
1586 | Vtemp_file_name_pattern = build_string ("detmp.XXX"); | |
1587 | #endif | |
1588 | staticpro (&Vtemp_file_name_pattern); | |
1589 | ||
80856e74 | 1590 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
fdb82f93 | 1591 | doc: /* *File name to load inferior shells from. |
b20b29be EZ |
1592 | Initialized from the SHELL environment variable, or to a system-dependent |
1593 | default if SHELL is not set. */); | |
80856e74 JB |
1594 | |
1595 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
fdb82f93 PJ |
1596 | doc: /* *List of directories to search programs to run in subprocesses. |
1597 | Each element is a string (directory name) or nil (try default directory). */); | |
80856e74 | 1598 | |
b81a1b72 | 1599 | DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, |
fdb82f93 PJ |
1600 | doc: /* *List of suffixes to try to find executable file names. |
1601 | Each element is a string. */); | |
33d5af99 | 1602 | Vexec_suffixes = Qnil; |
b81a1b72 | 1603 | |
80856e74 | 1604 | DEFVAR_LISP ("exec-directory", &Vexec_directory, |
fdb82f93 PJ |
1605 | doc: /* Directory for executables for Emacs to invoke. |
1606 | More generally, this includes any architecture-dependent files | |
1607 | that are built and installed from the Emacs distribution. */); | |
e576cab4 JB |
1608 | |
1609 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
fdb82f93 PJ |
1610 | doc: /* Directory of machine-independent files that come with GNU Emacs. |
1611 | These are files intended for Emacs to use while it runs. */); | |
80856e74 | 1612 | |
35a2f4b8 | 1613 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
fdb82f93 | 1614 | doc: /* Directory containing the DOC file that comes with GNU Emacs. |
ebf24b59 | 1615 | This is usually the same as `data-directory'. */); |
35a2f4b8 | 1616 | |
ed61592a | 1617 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
fdb82f93 PJ |
1618 | doc: /* For internal use by the build procedure only. |
1619 | This is the name of the directory in which the build procedure installed | |
ebf24b59 | 1620 | Emacs's info files; the default value for `Info-default-directory-list' |
fdb82f93 | 1621 | includes this. */); |
ed61592a JB |
1622 | Vconfigure_info_directory = build_string (PATH_INFO); |
1623 | ||
1e7ce61b | 1624 | DEFVAR_LISP ("shared-game-score-directory", &Vshared_game_score_directory, |
b065672a CW |
1625 | doc: /* Directory of score files for games which come with GNU Emacs. |
1626 | If this variable is nil, then Emacs is unable to use a shared directory. */); | |
40b49d4b JB |
1627 | #ifdef DOS_NT |
1628 | Vshared_game_score_directory = Qnil; | |
1629 | #else | |
63789758 | 1630 | Vshared_game_score_directory = build_string (PATH_GAME); |
40b49d4b | 1631 | #endif |
b065672a | 1632 | |
6b8e474c SM |
1633 | DEFVAR_LISP ("initial-environment", &Vinitial_environment, |
1634 | doc: /* List of environment variables inherited from the parent process. | |
1635 | Each element should be a string of the form ENVVARNAME=VALUE. | |
1636 | The elements must normally be decoded (using `locale-coding-system') for use. */); | |
1637 | Vinitial_environment = Qnil; | |
1638 | ||
80856e74 | 1639 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
5990851d | 1640 | doc: /* List of overridden environment variables for subprocesses to inherit. |
fdb82f93 | 1641 | Each element should be a string of the form ENVVARNAME=VALUE. |
5990851d | 1642 | |
a13f8f50 KL |
1643 | Entries in this list take precedence to those in the frame-local |
1644 | environments. Therefore, let-binding `process-environment' is an easy | |
1645 | way to temporarily change the value of an environment variable, | |
1646 | irrespective of where it comes from. To use `process-environment' to | |
1647 | remove an environment variable, include only its name in the list, | |
1648 | without "=VALUE". | |
5990851d KL |
1649 | |
1650 | This variable is set to nil when Emacs starts. | |
1651 | ||
fdb82f93 PJ |
1652 | If multiple entries define the same variable, the first one always |
1653 | takes precedence. | |
5990851d | 1654 | |
776a24a1 | 1655 | Non-ASCII characters are encoded according to the initial value of |
5990851d KL |
1656 | `locale-coding-system', i.e. the elements must normally be decoded for |
1657 | use. | |
1658 | ||
776a24a1 | 1659 | See `setenv' and `getenv'. */); |
86f5ca04 | 1660 | Vprocess_environment = Qnil; |
80856e74 | 1661 | |
80856e74 | 1662 | defsubr (&Scall_process); |
83fa009c | 1663 | defsubr (&Sgetenv_internal); |
e576cab4 | 1664 | defsubr (&Scall_process_region); |
80856e74 | 1665 | } |
6b61353c KH |
1666 | |
1667 | /* arch-tag: 769b8045-1df7-4d2b-8968-e3fb49017f95 | |
1668 | (do not change this comment) */ |