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, |
8cabe764 GM |
3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
4 | Free Software Foundation, Inc. | |
80856e74 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 10 | the Free Software Foundation; either version 3, or (at your option) |
80856e74 JB |
11 | any later version. |
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 | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
80856e74 JB |
22 | |
23 | ||
68c45bf0 | 24 | #include <config.h> |
80856e74 | 25 | #include <signal.h> |
e576cab4 | 26 | #include <errno.h> |
565620a5 | 27 | #include <stdio.h> |
80856e74 | 28 | |
03695ace | 29 | #ifndef USE_CRT_DLL |
426b37ae | 30 | extern int errno; |
03695ace | 31 | #endif |
426b37ae | 32 | |
80856e74 JB |
33 | /* Define SIGCHLD as an alias for SIGCLD. */ |
34 | ||
35 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
36 | #define SIGCHLD SIGCLD | |
37 | #endif /* SIGCLD */ | |
38 | ||
39 | #include <sys/types.h> | |
88a64fef | 40 | |
3cbd6585 GM |
41 | #ifdef HAVE_UNISTD_H |
42 | #include <unistd.h> | |
43 | #endif | |
44 | ||
80856e74 | 45 | #include <sys/file.h> |
776a24a1 | 46 | #ifdef HAVE_FCNTL_H |
472e83fe | 47 | #define INCLUDED_FCNTL |
80856e74 JB |
48 | #include <fcntl.h> |
49 | #endif | |
50 | ||
bad95d8f RS |
51 | #ifdef WINDOWSNT |
52 | #define NOMINMAX | |
53 | #include <windows.h> | |
54 | #include <stdlib.h> /* for proper declaration of environ */ | |
55 | #include <fcntl.h> | |
489f9371 | 56 | #include "w32.h" |
bad95d8f RS |
57 | #define _P_NOWAIT 1 /* from process.h */ |
58 | #endif | |
59 | ||
7e6c2178 | 60 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
472e83fe | 61 | #define INCLUDED_FCNTL |
7e6c2178 RS |
62 | #include <fcntl.h> |
63 | #include <sys/stat.h> | |
64 | #include <sys/param.h> | |
65 | #include <errno.h> | |
66 | #endif /* MSDOS */ | |
67 | ||
80856e74 JB |
68 | #ifndef O_RDONLY |
69 | #define O_RDONLY 0 | |
70 | #endif | |
71 | ||
72 | #ifndef O_WRONLY | |
73 | #define O_WRONLY 1 | |
74 | #endif | |
75 | ||
76 | #include "lisp.h" | |
77 | #include "commands.h" | |
78 | #include "buffer.h" | |
91183bfd | 79 | #include "character.h" |
edf496dd | 80 | #include "ccl.h" |
32d08644 | 81 | #include "coding.h" |
f0b950cf | 82 | #include "composite.h" |
57bda87a | 83 | #include <epaths.h> |
80856e74 | 84 | #include "process.h" |
d177f194 | 85 | #include "syssignal.h" |
a129418f | 86 | #include "systty.h" |
aba637ec | 87 | #include "blockinput.h" |
f105f403 KL |
88 | #include "frame.h" |
89 | #include "termhooks.h" | |
80856e74 | 90 | |
5f027cea EZ |
91 | #ifdef MSDOS |
92 | #include "msdos.h" | |
93 | #endif | |
94 | ||
80856e74 JB |
95 | #ifdef VMS |
96 | extern noshare char **environ; | |
97 | #else | |
03695ace | 98 | #ifndef USE_CRT_DLL |
80856e74 JB |
99 | extern char **environ; |
100 | #endif | |
03695ace | 101 | #endif |
80856e74 | 102 | |
f95c3f91 | 103 | #ifdef HAVE_SETPGID |
2b7e8799 | 104 | #if !defined (USG) || defined (BSD_PGRPS) |
320695d8 | 105 | #undef setpgrp |
f95c3f91 GM |
106 | #define setpgrp setpgid |
107 | #endif | |
2b7e8799 | 108 | #endif |
f95c3f91 | 109 | |
b81a1b72 SM |
110 | Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes; |
111 | Lisp_Object Vdata_directory, Vdoc_directory; | |
1e7ce61b | 112 | Lisp_Object Vconfigure_info_directory, Vshared_game_score_directory; |
8abd035b | 113 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
114 | |
115 | Lisp_Object Vshell_file_name; | |
116 | ||
6b8e474c | 117 | Lisp_Object Vprocess_environment, Vinitial_environment; |
80856e74 | 118 | |
bad95d8f | 119 | #ifdef DOS_NT |
093650fe | 120 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 121 | #endif /* DOS_NT */ |
093650fe | 122 | |
e0f24100 | 123 | /* True if we are about to fork off a synchronous process or if we |
80856e74 JB |
124 | are waiting for it. */ |
125 | int synch_process_alive; | |
126 | ||
127 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
128 | char *synch_process_death; | |
129 | ||
6b61353c KH |
130 | /* Nonzero => this is the signal number that terminated the subprocess. */ |
131 | int synch_process_termsig; | |
132 | ||
80856e74 JB |
133 | /* If synch_process_death is zero, |
134 | this is exit code of synchronous subprocess. */ | |
135 | int synch_process_retcode; | |
f105f403 | 136 | |
80856e74 | 137 | \f |
37d54121 RS |
138 | /* Clean up when exiting Fcall_process. |
139 | On MSDOS, delete the temporary file on any kind of termination. | |
140 | On Unix, kill the process and any children on termination by signal. */ | |
141 | ||
142 | /* Nonzero if this is termination due to exit. */ | |
143 | static int call_process_exited; | |
144 | ||
d2bb6598 SM |
145 | EXFUN (Fgetenv_internal, 2); |
146 | ||
80856e74 JB |
147 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
148 | ||
d177f194 JB |
149 | static Lisp_Object |
150 | call_process_kill (fdpid) | |
151 | Lisp_Object fdpid; | |
152 | { | |
68c45bf0 | 153 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
154 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
155 | synch_process_alive = 0; | |
156 | return Qnil; | |
157 | } | |
158 | ||
80856e74 JB |
159 | Lisp_Object |
160 | call_process_cleanup (fdpid) | |
161 | Lisp_Object fdpid; | |
162 | { | |
e39a993c | 163 | #if defined (MSDOS) |
7e6c2178 | 164 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
165 | register Lisp_Object file; |
166 | file = Fcdr (fdpid); | |
68c45bf0 | 167 | emacs_close (XFASTINT (Fcar (fdpid))); |
d5db4077 KR |
168 | if (strcmp (SDATA (file), NULL_DEVICE) != 0) |
169 | unlink (SDATA (file)); | |
e39a993c | 170 | #else /* not MSDOS */ |
d177f194 JB |
171 | register int pid = XFASTINT (Fcdr (fdpid)); |
172 | ||
37d54121 | 173 | if (call_process_exited) |
6b6e798b | 174 | { |
68c45bf0 | 175 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
176 | return Qnil; |
177 | } | |
37d54121 | 178 | |
d177f194 JB |
179 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
180 | { | |
aed13378 | 181 | int count = SPECPDL_INDEX (); |
d177f194 JB |
182 | record_unwind_protect (call_process_kill, fdpid); |
183 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
184 | immediate_quit = 1; | |
185 | QUIT; | |
186 | wait_for_termination (pid); | |
187 | immediate_quit = 0; | |
188 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
189 | message1 ("Waiting for process to die...done"); | |
190 | } | |
80856e74 | 191 | synch_process_alive = 0; |
68c45bf0 | 192 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 193 | #endif /* not MSDOS */ |
80856e74 JB |
194 | return Qnil; |
195 | } | |
196 | ||
197 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
fdb82f93 PJ |
198 | doc: /* Call PROGRAM synchronously in separate process. |
199 | The remaining arguments are optional. | |
200 | The program's input comes from file INFILE (nil means `/dev/null'). | |
201 | Insert output in BUFFER before point; t means current buffer; | |
202 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
203 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
204 | REAL-BUFFER says what to do with standard output, as above, | |
205 | while STDERR-FILE says what to do with standard error in the child. | |
206 | STDERR-FILE may be nil (discard standard error output), | |
207 | t (mix it with ordinary output), or a file name string. | |
208 | ||
209 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
210 | Remaining arguments are strings passed as command arguments to PROGRAM. | |
211 | ||
a4feb144 RS |
212 | If executable PROGRAM can't be found as an executable, `call-process' |
213 | signals a Lisp error. `call-process' reports errors in execution of | |
214 | the program only through its return and output. | |
215 | ||
fdb82f93 PJ |
216 | If BUFFER is 0, `call-process' returns immediately with value nil. |
217 | Otherwise it waits for PROGRAM to terminate | |
218 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
219 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
220 | ||
221 | usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 222 | (nargs, args) |
80856e74 JB |
223 | int nargs; |
224 | register Lisp_Object *args; | |
225 | { | |
0aa2630f KS |
226 | Lisp_Object infile, buffer, current_dir, path; |
227 | int display_p; | |
80856e74 JB |
228 | int fd[2]; |
229 | int filefd; | |
230 | register int pid; | |
4da256b1 KS |
231 | #define CALLPROC_BUFFER_SIZE_MIN (16 * 1024) |
232 | #define CALLPROC_BUFFER_SIZE_MAX (4 * CALLPROC_BUFFER_SIZE_MIN) | |
233 | char buf[CALLPROC_BUFFER_SIZE_MAX]; | |
234 | int bufsize = CALLPROC_BUFFER_SIZE_MIN; | |
aed13378 | 235 | int count = SPECPDL_INDEX (); |
2d607244 | 236 | |
4d3b07fd KR |
237 | register const unsigned char **new_argv |
238 | = (const unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
80856e74 | 239 | struct buffer *old = current_buffer; |
39eaa782 RS |
240 | /* File to use for stderr in the child. |
241 | t means use same as standard output. */ | |
242 | Lisp_Object error_file; | |
7e6c2178 RS |
243 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
244 | char *outf, *tempfile; | |
245 | int outfilefd; | |
246 | #endif | |
80856e74 JB |
247 | #if 0 |
248 | int mask; | |
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) |
beacaab3 KH |
290 | val = Qnil; |
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); |
776b95cb | 297 | if (CONSP (coding_systems)) |
70949dac | 298 | val = XCDR (coding_systems); |
776b95cb | 299 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 300 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
301 | else |
302 | val = Qnil; | |
32d08644 | 303 | } |
b4413d9f | 304 | val = coding_inherit_eol_type (val, Qnil); |
32d08644 | 305 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); |
6e50da0a KH |
306 | coding_attrs = CODING_ID_ATTRS (argument_coding.id); |
307 | if (NILP (CODING_ATTR_ASCII_COMPAT (coding_attrs))) | |
308 | { | |
309 | /* We should not use an ASCII incompatible coding system. */ | |
310 | val = raw_text_coding_system (val); | |
311 | setup_coding_system (val, &argument_coding); | |
312 | } | |
32d08644 | 313 | } |
32d08644 KH |
314 | } |
315 | ||
e576cab4 JB |
316 | if (nargs >= 2 && ! NILP (args[1])) |
317 | { | |
318 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
b7826503 | 319 | CHECK_STRING (infile); |
e576cab4 | 320 | } |
80856e74 | 321 | else |
5437e9f9 | 322 | infile = build_string (NULL_DEVICE); |
80856e74 | 323 | |
e576cab4 JB |
324 | if (nargs >= 3) |
325 | { | |
39eaa782 RS |
326 | buffer = args[2]; |
327 | ||
328 | /* If BUFFER is a list, its meaning is | |
329 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
330 | if (CONSP (buffer)) | |
331 | { | |
70949dac | 332 | if (CONSP (XCDR (buffer))) |
45be8a1e | 333 | { |
a9d4f28a | 334 | Lisp_Object stderr_file; |
70949dac | 335 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
336 | |
337 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
338 | error_file = stderr_file; | |
339 | else | |
340 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
341 | } | |
342 | ||
70949dac | 343 | buffer = XCAR (buffer); |
39eaa782 | 344 | } |
044512ed | 345 | |
39eaa782 RS |
346 | if (!(EQ (buffer, Qnil) |
347 | || EQ (buffer, Qt) | |
3ffde7d6 | 348 | || INTEGERP (buffer))) |
e576cab4 | 349 | { |
39eaa782 RS |
350 | Lisp_Object spec_buffer; |
351 | spec_buffer = buffer; | |
50fe359b | 352 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
353 | /* Mention the buffer name for a better error message. */ |
354 | if (NILP (buffer)) | |
b7826503 PJ |
355 | CHECK_BUFFER (spec_buffer); |
356 | CHECK_BUFFER (buffer); | |
e576cab4 JB |
357 | } |
358 | } | |
177c0ea7 | 359 | else |
e576cab4 | 360 | buffer = Qnil; |
80856e74 | 361 | |
58616e67 JB |
362 | /* Make sure that the child will be able to chdir to the current |
363 | buffer's current directory, or its unhandled equivalent. We | |
364 | can't just have the child check for an error when it does the | |
365 | chdir, since it's in a vfork. | |
366 | ||
367 | We have to GCPRO around this because Fexpand_file_name, | |
368 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
369 | might call a file name handling function. The argument list is | |
370 | protected by the caller, so all we really have to worry about is | |
371 | buffer. */ | |
372 | { | |
34b87689 | 373 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
58616e67 JB |
374 | |
375 | current_dir = current_buffer->directory; | |
376 | ||
34b87689 | 377 | GCPRO4 (infile, buffer, current_dir, error_file); |
58616e67 | 378 | |
c52b0b34 KH |
379 | current_dir |
380 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
381 | Qnil); | |
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 KH |
404 | { |
405 | struct gcpro gcpro1; | |
406 | ||
407 | GCPRO1 (current_dir); | |
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 | ||
d5db4077 | 423 | new_argv[0] = SDATA (path); |
c364e618 KH |
424 | if (nargs > 4) |
425 | { | |
426 | register int i; | |
c5bfa12b | 427 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 428 | |
c5bfa12b KH |
429 | GCPRO3 (infile, buffer, current_dir); |
430 | argument_coding.dst_multibyte = 0; | |
431 | for (i = 4; i < nargs; i++) | |
c364e618 | 432 | { |
c5bfa12b KH |
433 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
434 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
91183bfd KH |
435 | /* We must encode this argument. */ |
436 | args[i] = encode_coding_string (&argument_coding, args[i], 1); | |
d5db4077 | 437 | new_argv[i - 3] = SDATA (args[i]); |
c364e618 | 438 | } |
c5bfa12b | 439 | UNGCPRO; |
db54baaa | 440 | new_argv[nargs - 3] = 0; |
c364e618 | 441 | } |
db54baaa KH |
442 | else |
443 | new_argv[1] = 0; | |
80856e74 | 444 | |
7e6c2178 | 445 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 446 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
447 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
448 | else | |
449 | { | |
450 | tempfile = alloca (20); | |
451 | *tempfile = '\0'; | |
452 | } | |
453 | dostounix_filename (tempfile); | |
177c0ea7 | 454 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') |
7e6c2178 RS |
455 | strcat (tempfile, "/"); |
456 | strcat (tempfile, "detmp.XXX"); | |
457 | mktemp (tempfile); | |
458 | ||
459 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
460 | if (outfilefd < 0) | |
461 | { | |
68c45bf0 | 462 | emacs_close (filefd); |
6f89d28a MB |
463 | report_file_error ("Opening process output file", |
464 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 465 | } |
6f89d28a | 466 | fd[0] = filefd; |
2610078a | 467 | fd[1] = outfilefd; |
6f89d28a | 468 | #endif /* MSDOS */ |
7e6c2178 | 469 | |
d50d3dc8 | 470 | if (INTEGERP (buffer)) |
68c45bf0 | 471 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
472 | else |
473 | { | |
7e6c2178 | 474 | #ifndef MSDOS |
db92b288 GM |
475 | errno = 0; |
476 | if (pipe (fd) == -1) | |
477 | { | |
478 | emacs_close (filefd); | |
479 | report_file_error ("Creating process pipe", Qnil); | |
480 | } | |
7e6c2178 | 481 | #endif |
80856e74 JB |
482 | #if 0 |
483 | /* Replaced by close_process_descs */ | |
484 | set_exclusive_use (fd[0]); | |
485 | #endif | |
486 | } | |
487 | ||
488 | { | |
489 | /* child_setup must clobber environ in systems with true vfork. | |
490 | Protect it from permanent change. */ | |
491 | register char **save_environ = environ; | |
492 | register int fd1 = fd[1]; | |
39eaa782 | 493 | int fd_error = fd1; |
80856e74 JB |
494 | |
495 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 496 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
497 | #endif |
498 | ||
499 | /* Record that we're about to create a synchronous process. */ | |
500 | synch_process_alive = 1; | |
501 | ||
5c03767e RS |
502 | /* These vars record information from process termination. |
503 | Clear them now before process can possibly terminate, | |
504 | to avoid timing error if process terminates soon. */ | |
505 | synch_process_death = 0; | |
506 | synch_process_retcode = 0; | |
6b61353c | 507 | synch_process_termsig = 0; |
5c03767e | 508 | |
39eaa782 | 509 | if (NILP (error_file)) |
68c45bf0 | 510 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
511 | else if (STRINGP (error_file)) |
512 | { | |
513 | #ifdef DOS_NT | |
d5db4077 | 514 | fd_error = emacs_open (SDATA (error_file), |
68c45bf0 PE |
515 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
516 | S_IREAD | S_IWRITE); | |
39eaa782 | 517 | #else /* not DOS_NT */ |
d5db4077 | 518 | fd_error = creat (SDATA (error_file), 0666); |
39eaa782 RS |
519 | #endif /* not DOS_NT */ |
520 | } | |
521 | ||
522 | if (fd_error < 0) | |
523 | { | |
68c45bf0 | 524 | emacs_close (filefd); |
6f89d28a | 525 | if (fd[0] != filefd) |
68c45bf0 | 526 | emacs_close (fd[0]); |
39eaa782 | 527 | if (fd1 >= 0) |
68c45bf0 | 528 | emacs_close (fd1); |
6f89d28a MB |
529 | #ifdef MSDOS |
530 | unlink (tempfile); | |
531 | #endif | |
34b87689 KH |
532 | if (NILP (error_file)) |
533 | error_file = build_string (NULL_DEVICE); | |
534 | else if (STRINGP (error_file)) | |
535 | error_file = DECODE_FILE (error_file); | |
536 | report_file_error ("Cannot redirect stderr", Fcons (error_file, Qnil)); | |
39eaa782 | 537 | } |
89e1ec1d | 538 | |
2610078a | 539 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 540 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
541 | exit status, not its PID, so we assign it to `synch_process_retcode' |
542 | below. */ | |
c17c4250 EZ |
543 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
544 | 0, current_dir); | |
39eaa782 | 545 | |
2610078a KH |
546 | /* Record that the synchronous process exited and note its |
547 | termination status. */ | |
548 | synch_process_alive = 0; | |
549 | synch_process_retcode = pid; | |
550 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 551 | { |
ca9c0567 | 552 | synchronize_system_messages_locale (); |
68c45bf0 PE |
553 | synch_process_death = strerror (errno); |
554 | } | |
2610078a | 555 | |
68c45bf0 | 556 | emacs_close (outfilefd); |
2610078a | 557 | if (fd_error != outfilefd) |
68c45bf0 | 558 | emacs_close (fd_error); |
2610078a | 559 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
560 | /* Since CRLF is converted to LF within `decode_coding', we can |
561 | always open a file with binary mode. */ | |
68c45bf0 | 562 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
563 | if (fd[0] < 0) |
564 | { | |
565 | unlink (tempfile); | |
68c45bf0 | 566 | emacs_close (filefd); |
2610078a KH |
567 | report_file_error ("Cannot re-open temporary file", Qnil); |
568 | } | |
569 | #else /* not MSDOS */ | |
bad95d8f | 570 | #ifdef WINDOWSNT |
2d607244 RS |
571 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
572 | 0, current_dir); | |
bad95d8f | 573 | #else /* not WINDOWSNT */ |
aba637ec KS |
574 | BLOCK_INPUT; |
575 | ||
80856e74 JB |
576 | pid = vfork (); |
577 | ||
578 | if (pid == 0) | |
579 | { | |
580 | if (fd[0] >= 0) | |
68c45bf0 | 581 | emacs_close (fd[0]); |
1e7963c7 RS |
582 | #ifdef HAVE_SETSID |
583 | setsid (); | |
584 | #endif | |
585 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
586 | setpgrp (); |
587 | #else | |
588 | setpgrp (pid, pid); | |
589 | #endif /* USG */ | |
2d607244 RS |
590 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
591 | 0, current_dir); | |
80856e74 | 592 | } |
aba637ec KS |
593 | |
594 | UNBLOCK_INPUT; | |
bad95d8f | 595 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
596 | |
597 | /* The MSDOS case did this already. */ | |
598 | if (fd_error >= 0) | |
68c45bf0 | 599 | emacs_close (fd_error); |
2610078a | 600 | #endif /* not MSDOS */ |
80856e74 | 601 | |
80856e74 JB |
602 | environ = save_environ; |
603 | ||
6b6e798b RS |
604 | /* Close most of our fd's, but not fd[0] |
605 | since we will use that to read input from. */ | |
68c45bf0 | 606 | emacs_close (filefd); |
799abb26 | 607 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 608 | emacs_close (fd1); |
80856e74 JB |
609 | } |
610 | ||
611 | if (pid < 0) | |
612 | { | |
6b6e798b | 613 | if (fd[0] >= 0) |
68c45bf0 | 614 | emacs_close (fd[0]); |
80856e74 JB |
615 | report_file_error ("Doing vfork", Qnil); |
616 | } | |
617 | ||
d50d3dc8 | 618 | if (INTEGERP (buffer)) |
80856e74 | 619 | { |
6b6e798b | 620 | if (fd[0] >= 0) |
68c45bf0 | 621 | emacs_close (fd[0]); |
80856e74 | 622 | #ifndef subprocesses |
e576cab4 JB |
623 | /* If Emacs has been built with asynchronous subprocess support, |
624 | we don't need to do this, I think because it will then have | |
625 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
626 | wait_without_blocking (); |
627 | #endif /* subprocesses */ | |
80856e74 JB |
628 | return Qnil; |
629 | } | |
630 | ||
6b6e798b | 631 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
632 | call_process_exited = 0; |
633 | ||
e39a993c | 634 | #if defined(MSDOS) |
7e6c2178 RS |
635 | /* MSDOS needs different cleanup information. */ |
636 | record_unwind_protect (call_process_cleanup, | |
637 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
638 | #else | |
80856e74 JB |
639 | record_unwind_protect (call_process_cleanup, |
640 | Fcons (make_number (fd[0]), make_number (pid))); | |
e39a993c | 641 | #endif /* not MSDOS */ |
80856e74 JB |
642 | |
643 | ||
d50d3dc8 | 644 | if (BUFFERP (buffer)) |
80856e74 JB |
645 | Fset_buffer (buffer); |
646 | ||
09494912 RS |
647 | if (NILP (buffer)) |
648 | { | |
649 | /* If BUFFER is nil, we must read process output once and then | |
650 | discard it, so setup coding system but with nil. */ | |
651 | setup_coding_system (Qnil, &process_coding); | |
652 | } | |
653 | else | |
654 | { | |
655 | Lisp_Object val, *args2; | |
656 | ||
657 | val = Qnil; | |
658 | if (!NILP (Vcoding_system_for_read)) | |
659 | val = Vcoding_system_for_read; | |
660 | else | |
661 | { | |
662 | if (EQ (coding_systems, Qt)) | |
663 | { | |
664 | int i; | |
665 | ||
666 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
667 | args2[0] = Qcall_process; | |
668 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
669 | coding_systems | |
670 | = Ffind_operation_coding_system (nargs + 1, args2); | |
671 | } | |
672 | if (CONSP (coding_systems)) | |
70949dac | 673 | val = XCAR (coding_systems); |
09494912 | 674 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 675 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
676 | else |
677 | val = Qnil; | |
678 | } | |
91183bfd | 679 | Fcheck_coding_system (val); |
09494912 RS |
680 | /* In unibyte mode, character code conversion should not take |
681 | place but EOL conversion should. So, setup raw-text or one | |
682 | of the subsidiary according to the information just setup. */ | |
683 | if (NILP (current_buffer->enable_multibyte_characters) | |
684 | && !NILP (val)) | |
91183bfd KH |
685 | val = raw_text_coding_system (val); |
686 | setup_coding_system (val, &process_coding); | |
09494912 RS |
687 | } |
688 | ||
80856e74 JB |
689 | immediate_quit = 1; |
690 | QUIT; | |
691 | ||
692 | { | |
693 | register int nread; | |
0ad477db | 694 | int first = 1; |
6e3bfbb2 | 695 | int total_read = 0; |
321fecde | 696 | int carryover = 0; |
0aa2630f | 697 | int display_on_the_fly = display_p; |
05b44e90 KH |
698 | struct coding_system saved_coding; |
699 | ||
700 | saved_coding = process_coding; | |
60558b19 | 701 | while (1) |
80856e74 | 702 | { |
60558b19 RS |
703 | /* Repeatedly read until we've filled as much as possible |
704 | of the buffer size we have. But don't read | |
8e6208c5 | 705 | less than 1024--save that for the next bufferful. */ |
321fecde | 706 | nread = carryover; |
60558b19 | 707 | while (nread < bufsize - 1024) |
00fb3e95 | 708 | { |
4da256b1 | 709 | int this_read = emacs_read (fd[0], buf + nread, |
68c45bf0 | 710 | bufsize - nread); |
60558b19 RS |
711 | |
712 | if (this_read < 0) | |
713 | goto give_up; | |
714 | ||
715 | if (this_read == 0) | |
7a7ab107 KH |
716 | { |
717 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
718 | break; | |
719 | } | |
60558b19 RS |
720 | |
721 | nread += this_read; | |
7a7ab107 | 722 | total_read += this_read; |
60558b19 | 723 | |
7a7ab107 KH |
724 | if (display_on_the_fly) |
725 | break; | |
726 | } | |
60558b19 RS |
727 | |
728 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 729 | immediate_quit = 0; |
177c0ea7 | 730 | |
012c6fcb | 731 | if (!NILP (buffer)) |
32d08644 | 732 | { |
bb4a3884 KH |
733 | if (NILP (current_buffer->enable_multibyte_characters) |
734 | && ! CODING_MAY_REQUIRE_DECODING (&process_coding)) | |
4da256b1 | 735 | insert_1_both (buf, nread, nread, 0, 1, 0); |
32d08644 KH |
736 | else |
737 | { /* We have to decode the input. */ | |
45d60801 | 738 | Lisp_Object curbuf; |
177c0ea7 | 739 | |
45d60801 KH |
740 | XSETBUFFER (curbuf, current_buffer); |
741 | decode_coding_c_string (&process_coding, buf, nread, | |
742 | curbuf); | |
7a7ab107 | 743 | if (display_on_the_fly |
91183bfd KH |
744 | && CODING_REQUIRE_DETECTION (&saved_coding) |
745 | && ! CODING_REQUIRE_DETECTION (&process_coding)) | |
7a7ab107 KH |
746 | { |
747 | /* We have detected some coding system. But, | |
748 | there's a possibility that the detection was | |
749 | done by insufficient data. So, we give up | |
750 | displaying on the fly. */ | |
91183bfd KH |
751 | if (process_coding.produced > 0) |
752 | del_range_2 (process_coding.dst_pos, | |
753 | process_coding.dst_pos_byte, | |
754 | process_coding.dst_pos | |
755 | + process_coding.produced_char, | |
756 | process_coding.dst_pos_byte | |
757 | + process_coding.produced, 0); | |
7a7ab107 KH |
758 | display_on_the_fly = 0; |
759 | process_coding = saved_coding; | |
760 | carryover = nread; | |
0aa2630f KS |
761 | /* This is to make the above condition always |
762 | fails in the future. */ | |
21d0467f KH |
763 | saved_coding.common_flags |
764 | &= ~CODING_REQUIRE_DETECTION_MASK; | |
7a7ab107 KH |
765 | continue; |
766 | } | |
177c0ea7 | 767 | |
ea99bcc1 KH |
768 | TEMP_SET_PT_BOTH (PT + process_coding.produced_char, |
769 | PT_BYTE + process_coding.produced); | |
54ab3d3b | 770 | carryover = process_coding.carryover_bytes; |
321fecde | 771 | if (carryover > 0) |
c5bfa12b KH |
772 | /* As CARRYOVER should not be that large, we had |
773 | better avoid overhead of bcopy. */ | |
45d60801 | 774 | BCOPY_SHORT (process_coding.carryover, buf, |
54ab3d3b | 775 | process_coding.carryover_bytes); |
32d08644 KH |
776 | } |
777 | } | |
c5bfa12b | 778 | |
321fecde | 779 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 780 | break; |
6e3bfbb2 | 781 | |
4da256b1 | 782 | #if (CALLPROC_BUFFER_SIZE_MIN != CALLPROC_BUFFER_SIZE_MAX) |
6e3bfbb2 | 783 | /* Make the buffer bigger as we continue to read more data, |
4da256b1 KS |
784 | but not past CALLPROC_BUFFER_SIZE_MAX. */ |
785 | if (bufsize < CALLPROC_BUFFER_SIZE_MAX && total_read > 32 * bufsize) | |
786 | if ((bufsize *= 2) > CALLPROC_BUFFER_SIZE_MAX) | |
787 | bufsize = CALLPROC_BUFFER_SIZE_MAX; | |
788 | #endif | |
6e3bfbb2 | 789 | |
0aa2630f | 790 | if (display_p) |
0ad477db RS |
791 | { |
792 | if (first) | |
793 | prepare_menu_bars (); | |
794 | first = 0; | |
3007ebfb | 795 | redisplay_preserve_echo_area (1); |
0aa2630f KS |
796 | /* This variable might have been set to 0 for code |
797 | detection. In that case, we set it back to 1 because | |
798 | we should have already detected a coding system. */ | |
799 | display_on_the_fly = 1; | |
0ad477db | 800 | } |
80856e74 JB |
801 | immediate_quit = 1; |
802 | QUIT; | |
803 | } | |
60558b19 | 804 | give_up: ; |
80856e74 | 805 | |
91183bfd KH |
806 | Vlast_coding_system_used = CODING_ID_NAME (process_coding.id); |
807 | /* If the caller required, let the buffer inherit the | |
808 | coding-system used to decode the process output. */ | |
809 | if (inherit_process_coding_system) | |
810 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
8f924df7 | 811 | make_number (total_read)); |
3b440bb5 EZ |
812 | } |
813 | ||
80856e74 JB |
814 | /* Wait for it to terminate, unless it already has. */ |
815 | wait_for_termination (pid); | |
816 | ||
817 | immediate_quit = 0; | |
818 | ||
819 | set_buffer_internal (old); | |
820 | ||
37d54121 RS |
821 | /* Don't kill any children that the subprocess may have left behind |
822 | when exiting. */ | |
823 | call_process_exited = 1; | |
824 | ||
80856e74 JB |
825 | unbind_to (count, Qnil); |
826 | ||
6b61353c KH |
827 | if (synch_process_termsig) |
828 | { | |
829 | char *signame; | |
830 | ||
831 | synchronize_system_messages_locale (); | |
832 | signame = strsignal (synch_process_termsig); | |
833 | ||
834 | if (signame == 0) | |
835 | signame = "unknown"; | |
836 | ||
837 | synch_process_death = signame; | |
838 | } | |
839 | ||
80856e74 | 840 | if (synch_process_death) |
68c45bf0 PE |
841 | return code_convert_string_norecord (build_string (synch_process_death), |
842 | Vlocale_coding_system, 0); | |
80856e74 JB |
843 | return make_number (synch_process_retcode); |
844 | } | |
845 | #endif | |
846 | \f | |
9fefd2ba | 847 | static Lisp_Object |
80856e74 JB |
848 | delete_temp_file (name) |
849 | Lisp_Object name; | |
850 | { | |
1a271e14 KR |
851 | /* Suppress jka-compr handling, etc. */ |
852 | int count = SPECPDL_INDEX (); | |
853 | specbind (intern ("file-name-handler-alist"), Qnil); | |
2e3dc201 | 854 | internal_delete_file (name); |
1a271e14 | 855 | unbind_to (count, Qnil); |
320695d8 | 856 | return Qnil; |
80856e74 JB |
857 | } |
858 | ||
859 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
fdb82f93 PJ |
860 | 3, MANY, 0, |
861 | doc: /* Send text from START to END to a synchronous process running PROGRAM. | |
862 | The remaining arguments are optional. | |
863 | Delete the text if fourth arg DELETE is non-nil. | |
864 | ||
865 | Insert output in BUFFER before point; t means current buffer; | |
866 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
867 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
868 | REAL-BUFFER says what to do with standard output, as above, | |
869 | while STDERR-FILE says what to do with standard error in the child. | |
870 | STDERR-FILE may be nil (discard standard error output), | |
871 | t (mix it with ordinary output), or a file name string. | |
872 | ||
873 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
874 | Remaining args are passed to PROGRAM at startup as command args. | |
875 | ||
ba9a5174 | 876 | If BUFFER is 0, `call-process-region' returns immediately with value nil. |
fdb82f93 PJ |
877 | Otherwise it waits for PROGRAM to terminate |
878 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
879 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
880 | ||
881 | usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 882 | (nargs, args) |
80856e74 JB |
883 | int nargs; |
884 | register Lisp_Object *args; | |
885 | { | |
39323a7e KH |
886 | struct gcpro gcpro1; |
887 | Lisp_Object filename_string; | |
888 | register Lisp_Object start, end; | |
aed13378 | 889 | int count = SPECPDL_INDEX (); |
08ee4e87 | 890 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 891 | Lisp_Object coding_systems; |
32d08644 KH |
892 | Lisp_Object val, *args2; |
893 | int i; | |
bad95d8f | 894 | #ifdef DOS_NT |
7e6c2178 | 895 | char *tempfile; |
7e6c2178 RS |
896 | char *outf = '\0'; |
897 | ||
8a52365c EZ |
898 | if ((outf = egetenv ("TMPDIR")) |
899 | || (outf = egetenv ("TMP")) | |
900 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
901 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
902 | else | |
903 | { | |
904 | tempfile = alloca (20); | |
905 | *tempfile = '\0'; | |
906 | } | |
0774fcf8 | 907 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 908 | strcat (tempfile, "/"); |
5711b547 RS |
909 | if ('/' == DIRECTORY_SEP) |
910 | dostounix_filename (tempfile); | |
911 | else | |
912 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
913 | #ifdef WINDOWSNT |
914 | strcat (tempfile, "emXXXXXX"); | |
915 | #else | |
7e6c2178 | 916 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 917 | #endif |
bad95d8f | 918 | #else /* not DOS_NT */ |
d5db4077 KR |
919 | char *tempfile = (char *) alloca (SBYTES (Vtemp_file_name_pattern) + 1); |
920 | bcopy (SDATA (Vtemp_file_name_pattern), tempfile, | |
921 | SBYTES (Vtemp_file_name_pattern) + 1); | |
bad95d8f | 922 | #endif /* not DOS_NT */ |
7e6c2178 | 923 | |
09494912 RS |
924 | coding_systems = Qt; |
925 | ||
1ddc85a4 DL |
926 | #ifdef HAVE_MKSTEMP |
927 | { | |
d277f1f7 YM |
928 | int fd; |
929 | ||
930 | BLOCK_INPUT; | |
931 | fd = mkstemp (tempfile); | |
932 | UNBLOCK_INPUT; | |
1ddc85a4 DL |
933 | if (fd == -1) |
934 | report_file_error ("Failed to open temporary file", | |
935 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
936 | else | |
937 | close (fd); | |
938 | } | |
939 | #else | |
80856e74 | 940 | mktemp (tempfile); |
1ddc85a4 | 941 | #endif |
80856e74 JB |
942 | |
943 | filename_string = build_string (tempfile); | |
39323a7e | 944 | GCPRO1 (filename_string); |
80856e74 JB |
945 | start = args[0]; |
946 | end = args[1]; | |
32d08644 | 947 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
948 | if (!NILP (Vcoding_system_for_write)) |
949 | val = Vcoding_system_for_write; | |
950 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
951 | val = Qnil; |
952 | else | |
beacaab3 | 953 | { |
91489411 RS |
954 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
955 | args2[0] = Qcall_process_region; | |
956 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
957 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
958 | if (CONSP (coding_systems)) | |
70949dac | 959 | val = XCDR (coding_systems); |
91489411 | 960 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 961 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 962 | else |
91489411 | 963 | val = Qnil; |
beacaab3 | 964 | } |
32d08644 | 965 | |
168afdaa | 966 | { |
aed13378 | 967 | int count1 = SPECPDL_INDEX (); |
168afdaa RS |
968 | |
969 | specbind (intern ("coding-system-for-write"), val); | |
bb951f0e KR |
970 | /* POSIX lets mk[s]temp use "."; don't invoke jka-compr if we |
971 | happen to get a ".Z" suffix. */ | |
972 | specbind (intern ("file-name-handler-alist"), Qnil); | |
168afdaa RS |
973 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); |
974 | ||
975 | unbind_to (count1, Qnil); | |
976 | } | |
91489411 | 977 | |
177c0ea7 | 978 | /* Note that Fcall_process takes care of binding |
91489411 | 979 | coding-system-for-read. */ |
093650fe | 980 | |
80856e74 JB |
981 | record_unwind_protect (delete_temp_file, filename_string); |
982 | ||
edf496dd | 983 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
984 | Fdelete_region (start, end); |
985 | ||
edf496dd KH |
986 | if (nargs > 3) |
987 | { | |
988 | args += 2; | |
989 | nargs -= 2; | |
990 | } | |
991 | else | |
992 | { | |
993 | args[0] = args[2]; | |
994 | nargs = 2; | |
995 | } | |
996 | args[1] = filename_string; | |
80856e74 | 997 | |
edf496dd | 998 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
999 | } |
1000 | \f | |
1001 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
1002 | ||
dfcf069d AS |
1003 | static int relocate_fd (); |
1004 | ||
5990851d KL |
1005 | static char ** |
1006 | add_env (char **env, char **new_env, char *string) | |
1007 | { | |
1008 | char **ep; | |
1009 | int ok = 1; | |
1010 | if (string == NULL) | |
1011 | return new_env; | |
1012 | ||
1013 | /* See if this string duplicates any string already in the env. | |
1014 | If so, don't put it in. | |
1015 | When an env var has multiple definitions, | |
1016 | we keep the definition that comes first in process-environment. */ | |
1017 | for (ep = env; ok && ep != new_env; ep++) | |
1018 | { | |
1019 | char *p = *ep, *q = string; | |
1020 | while (ok) | |
1021 | { | |
1022 | if (*q != *p) | |
1023 | break; | |
1024 | if (*q == 0) | |
1025 | /* The string is a lone variable name; keep it for now, we | |
1026 | will remove it later. It is a placeholder for a | |
1027 | variable that is not to be included in the environment. */ | |
1028 | break; | |
1029 | if (*q == '=') | |
1030 | ok = 0; | |
1031 | p++, q++; | |
1032 | } | |
1033 | } | |
1034 | if (ok) | |
1035 | *new_env++ = string; | |
1036 | return new_env; | |
1037 | } | |
1038 | ||
80856e74 JB |
1039 | /* This is the last thing run in a newly forked inferior |
1040 | either synchronous or asynchronous. | |
1041 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1042 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1043 | then exec another program based on new_argv. | |
1044 | ||
1045 | This function may change environ for the superior process. | |
1046 | Therefore, the superior process must save and restore the value | |
1047 | of environ around the vfork and the call to this function. | |
1048 | ||
80856e74 | 1049 | SET_PGRP is nonzero if we should put the subprocess into a separate |
177c0ea7 | 1050 | process group. |
e576cab4 JB |
1051 | |
1052 | CURRENT_DIR is an elisp string giving the path of the current | |
1053 | directory the subprocess should have. Since we can't really signal | |
1054 | a decent error from within the child, this should be verified as an | |
1055 | executable directory by the parent. */ | |
80856e74 | 1056 | |
dfcf069d | 1057 | int |
e576cab4 | 1058 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1059 | int in, out, err; |
1060 | register char **new_argv; | |
80856e74 | 1061 | int set_pgrp; |
e576cab4 | 1062 | Lisp_Object current_dir; |
80856e74 | 1063 | { |
e576cab4 | 1064 | char **env; |
7fcf7f05 | 1065 | char *pwd_var; |
bad95d8f RS |
1066 | #ifdef WINDOWSNT |
1067 | int cpid; | |
4252a4bd | 1068 | HANDLE handles[3]; |
bad95d8f | 1069 | #endif /* WINDOWSNT */ |
e576cab4 | 1070 | |
33abe2d9 | 1071 | int pid = getpid (); |
80856e74 | 1072 | |
68d10241 | 1073 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 | 1074 | { |
31ade731 | 1075 | extern EMACS_INT emacs_priority; |
4f0b9d49 | 1076 | |
68d10241 RS |
1077 | if (emacs_priority < 0) |
1078 | nice (- emacs_priority); | |
4f0b9d49 | 1079 | } |
5b633aeb | 1080 | #endif |
80856e74 JB |
1081 | |
1082 | #ifdef subprocesses | |
1083 | /* Close Emacs's descriptors that this process should not have. */ | |
1084 | close_process_descs (); | |
1085 | #endif | |
c17c4250 EZ |
1086 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1087 | we will lose if we call close_load_descs here. */ | |
1088 | #ifndef DOS_NT | |
4458cebe | 1089 | close_load_descs (); |
c17c4250 | 1090 | #endif |
80856e74 JB |
1091 | |
1092 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1093 | that do not have true vfork or that have true (stack) alloca. | |
caa01fe0 GM |
1094 | If using vfork and C_ALLOCA (when Emacs used to include |
1095 | src/alloca.c) it is safe because that changes the superior's | |
1096 | static variables as if the superior had done alloca and will be | |
1097 | cleaned up in the usual way. */ | |
e576cab4 | 1098 | { |
7fcf7f05 | 1099 | register char *temp; |
e576cab4 | 1100 | register int i; |
77d78be1 | 1101 | |
d5db4077 | 1102 | i = SBYTES (current_dir); |
16425c4a EZ |
1103 | #ifdef MSDOS |
1104 | /* MSDOS must have all environment variables malloc'ed, because | |
1105 | low-level libc functions that launch subsidiary processes rely | |
1106 | on that. */ | |
1107 | pwd_var = (char *) xmalloc (i + 6); | |
1108 | #else | |
7fcf7f05 | 1109 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1110 | #endif |
7fcf7f05 RS |
1111 | temp = pwd_var + 4; |
1112 | bcopy ("PWD=", pwd_var, 4); | |
d5db4077 | 1113 | bcopy (SDATA (current_dir), temp, i); |
bad95d8f | 1114 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1115 | temp[i] = 0; |
1116 | ||
c17c4250 | 1117 | #ifndef DOS_NT |
e576cab4 JB |
1118 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1119 | the callers check the current directory before forking, this | |
1120 | should only return an error if the directory's permissions | |
1121 | are changed between the check and this chdir, but we should | |
1122 | at least check. */ | |
1123 | if (chdir (temp) < 0) | |
20b25e46 | 1124 | _exit (errno); |
b4c7684c | 1125 | #endif |
7fcf7f05 | 1126 | |
c17c4250 EZ |
1127 | #ifdef DOS_NT |
1128 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1129 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1130 | { | |
1131 | temp += 2; | |
1132 | i -= 2; | |
1133 | } | |
1134 | #endif | |
1135 | ||
7fcf7f05 | 1136 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1137 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1138 | temp[--i] = 0; |
e576cab4 | 1139 | } |
80856e74 | 1140 | |
5990851d | 1141 | /* Set `env' to a vector of the strings in the environment. */ |
80856e74 JB |
1142 | { |
1143 | register Lisp_Object tem; | |
1144 | register char **new_env; | |
5990851d | 1145 | char **p, **q; |
80856e74 | 1146 | register int new_length; |
d2bb6598 | 1147 | Lisp_Object display = Qnil; |
de87fb59 | 1148 | |
80856e74 | 1149 | new_length = 0; |
f105f403 | 1150 | |
80856e74 | 1151 | for (tem = Vprocess_environment; |
5990851d KL |
1152 | CONSP (tem) && STRINGP (XCAR (tem)); |
1153 | tem = XCDR (tem)) | |
d2bb6598 SM |
1154 | { |
1155 | if (strncmp (SDATA (XCAR (tem)), "DISPLAY", 7) == 0 | |
1156 | && (SDATA (XCAR (tem)) [7] == '\0' | |
1157 | || SDATA (XCAR (tem)) [7] == '=')) | |
1158 | /* DISPLAY is specified in process-environment. */ | |
1159 | display = Qt; | |
1160 | new_length++; | |
1161 | } | |
de87fb59 | 1162 | |
d2bb6598 SM |
1163 | /* If not provided yet, use the frame's DISPLAY. */ |
1164 | if (NILP (display)) | |
1165 | { | |
1166 | Lisp_Object tmp = Fframe_parameter (selected_frame, Qdisplay); | |
1167 | if (!STRINGP (tmp) && CONSP (Vinitial_environment)) | |
1168 | /* If still not found, Look for DISPLAY in Vinitial_environment. */ | |
1169 | tmp = Fgetenv_internal (build_string ("DISPLAY"), | |
1170 | Vinitial_environment); | |
1171 | if (STRINGP (tmp)) | |
1172 | { | |
1173 | display = tmp; | |
1174 | new_length++; | |
1175 | } | |
1176 | } | |
80856e74 | 1177 | |
7fcf7f05 RS |
1178 | /* new_length + 2 to include PWD and terminating 0. */ |
1179 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
7fcf7f05 RS |
1180 | /* If we have a PWD envvar, pass one down, |
1181 | but with corrected value. */ | |
a13f8f50 | 1182 | if (egetenv ("PWD")) |
7fcf7f05 | 1183 | *new_env++ = pwd_var; |
5990851d | 1184 | |
6b8e474c | 1185 | if (STRINGP (display)) |
de87fb59 DN |
1186 | { |
1187 | int vlen = strlen ("DISPLAY=") + strlen (SDATA (display)) + 1; | |
1188 | char *vdata = (char *) alloca (vlen); | |
1189 | strcpy (vdata, "DISPLAY="); | |
1190 | strcat (vdata, SDATA (display)); | |
1191 | new_env = add_env (env, new_env, vdata); | |
1192 | } | |
80856e74 | 1193 | |
5990851d | 1194 | /* Overrides. */ |
80856e74 | 1195 | for (tem = Vprocess_environment; |
70949dac KR |
1196 | CONSP (tem) && STRINGP (XCAR (tem)); |
1197 | tem = XCDR (tem)) | |
5990851d | 1198 | new_env = add_env (env, new_env, SDATA (XCAR (tem))); |
d2bb6598 | 1199 | |
5990851d KL |
1200 | *new_env = 0; |
1201 | ||
1202 | /* Remove variable names without values. */ | |
1203 | p = q = env; | |
1204 | while (*p != 0) | |
cd9565ba | 1205 | { |
5990851d | 1206 | while (*q != 0 && strchr (*q, '=') == NULL) |
1baf6db9 | 1207 | q++; |
5990851d KL |
1208 | *p = *q++; |
1209 | if (*p != 0) | |
1210 | p++; | |
cd9565ba | 1211 | } |
80856e74 | 1212 | } |
de87fb59 DN |
1213 | |
1214 | ||
bad95d8f RS |
1215 | #ifdef WINDOWSNT |
1216 | prepare_standard_handles (in, out, err, handles); | |
d5db4077 | 1217 | set_process_dir (SDATA (current_dir)); |
bad95d8f | 1218 | #else /* not WINDOWSNT */ |
426b37ae JB |
1219 | /* Make sure that in, out, and err are not actually already in |
1220 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1221 | started with its standard in, out, or error closed, as might |
426b37ae | 1222 | happen under X. */ |
f29f9e4a RS |
1223 | { |
1224 | int oin = in, oout = out; | |
1225 | ||
1226 | /* We have to avoid relocating the same descriptor twice! */ | |
1227 | ||
1228 | in = relocate_fd (in, 3); | |
1229 | ||
1230 | if (out == oin) | |
1231 | out = in; | |
1232 | else | |
3e9367e7 | 1233 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1234 | |
1235 | if (err == oin) | |
1236 | err = in; | |
1237 | else if (err == oout) | |
1238 | err = out; | |
1239 | else | |
3e9367e7 | 1240 | err = relocate_fd (err, 3); |
f29f9e4a | 1241 | } |
426b37ae | 1242 | |
c17c4250 | 1243 | #ifndef MSDOS |
68c45bf0 PE |
1244 | emacs_close (0); |
1245 | emacs_close (1); | |
1246 | emacs_close (2); | |
80856e74 JB |
1247 | |
1248 | dup2 (in, 0); | |
1249 | dup2 (out, 1); | |
1250 | dup2 (err, 2); | |
68c45bf0 PE |
1251 | emacs_close (in); |
1252 | emacs_close (out); | |
1253 | emacs_close (err); | |
c17c4250 | 1254 | #endif /* not MSDOS */ |
bad95d8f | 1255 | #endif /* not WINDOWSNT */ |
80856e74 | 1256 | |
6b2cd868 | 1257 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1258 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1259 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1260 | #endif |
e576cab4 JB |
1261 | #else |
1262 | setpgrp (pid, pid); | |
1263 | #endif /* USG */ | |
a129418f RS |
1264 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1265 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 | 1266 | |
c17c4250 EZ |
1267 | #ifdef MSDOS |
1268 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
a3f0666f | 1269 | xfree (pwd_var); |
c17c4250 EZ |
1270 | if (pid == -1) |
1271 | /* An error occurred while trying to run the subprocess. */ | |
1272 | report_file_error ("Spawning child process", Qnil); | |
1273 | return pid; | |
1274 | #else /* not MSDOS */ | |
bad95d8f RS |
1275 | #ifdef WINDOWSNT |
1276 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1277 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1278 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1279 | if (cpid == -1) |
1280 | /* An error occurred while trying to spawn the process. */ | |
1281 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1282 | return cpid; |
1283 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1284 | /* execvp does not accept an environment arg so the only way |
1285 | to pass this environment is to set environ. Our caller | |
1286 | is responsible for restoring the ambient value of environ. */ | |
1287 | environ = env; | |
1288 | execvp (new_argv[0], new_argv); | |
1289 | ||
68c45bf0 PE |
1290 | emacs_write (1, "Can't exec program: ", 20); |
1291 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1292 | emacs_write (1, "\n", 1); | |
80856e74 | 1293 | _exit (1); |
bad95d8f | 1294 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1295 | #endif /* not MSDOS */ |
80856e74 JB |
1296 | } |
1297 | ||
a3833dfe | 1298 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1299 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1300 | static int |
a3833dfe KH |
1301 | relocate_fd (fd, minfd) |
1302 | int fd, minfd; | |
426b37ae | 1303 | { |
a3833dfe | 1304 | if (fd >= minfd) |
426b37ae JB |
1305 | return fd; |
1306 | else | |
1307 | { | |
1308 | int new = dup (fd); | |
1309 | if (new == -1) | |
1310 | { | |
20c018a0 | 1311 | char *message1 = "Error while setting up child: "; |
826c56ac | 1312 | char *errmessage = strerror (errno); |
20c018a0 | 1313 | char *message2 = "\n"; |
68c45bf0 PE |
1314 | emacs_write (2, message1, strlen (message1)); |
1315 | emacs_write (2, errmessage, strlen (errmessage)); | |
1316 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1317 | _exit (1); |
1318 | } | |
1319 | /* Note that we hold the original FD open while we recurse, | |
1320 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1321 | new = relocate_fd (new, minfd); |
68c45bf0 | 1322 | emacs_close (fd); |
426b37ae JB |
1323 | return new; |
1324 | } | |
1325 | } | |
1326 | ||
012c6fcb | 1327 | static int |
db699fc6 | 1328 | getenv_internal_1 (var, varlen, value, valuelen, env) |
012c6fcb JA |
1329 | char *var; |
1330 | int varlen; | |
1331 | char **value; | |
1332 | int *valuelen; | |
db699fc6 | 1333 | Lisp_Object env; |
012c6fcb | 1334 | { |
db699fc6 | 1335 | for (; CONSP (env); env = XCDR (env)) |
012c6fcb | 1336 | { |
db699fc6 | 1337 | Lisp_Object entry = XCAR (env); |
d50d3dc8 | 1338 | if (STRINGP (entry) |
db699fc6 | 1339 | && SBYTES (entry) >= varlen |
bad95d8f RS |
1340 | #ifdef WINDOWSNT |
1341 | /* NT environment variables are case insensitive. */ | |
d5db4077 | 1342 | && ! strnicmp (SDATA (entry), var, varlen) |
bad95d8f | 1343 | #else /* not WINDOWSNT */ |
d5db4077 | 1344 | && ! bcmp (SDATA (entry), var, varlen) |
bad95d8f | 1345 | #endif /* not WINDOWSNT */ |
a9971c6d | 1346 | ) |
012c6fcb | 1347 | { |
db699fc6 SM |
1348 | if (SBYTES (entry) > varlen && SREF (entry, varlen) == '=') |
1349 | { | |
1350 | *value = (char *) SDATA (entry) + (varlen + 1); | |
1351 | *valuelen = SBYTES (entry) - (varlen + 1); | |
1352 | return 1; | |
1353 | } | |
1354 | else if (SBYTES (entry) == varlen) | |
1355 | { | |
1356 | /* Lone variable names in Vprocess_environment mean that | |
1357 | variable should be removed from the environment. */ | |
1358 | *value = NULL; | |
1359 | return 1; | |
1360 | } | |
1361 | } | |
1362 | } | |
1363 | return 0; | |
1364 | } | |
1365 | ||
012c6fcb | 1366 | static int |
da8e8fc1 | 1367 | getenv_internal (var, varlen, value, valuelen, frame) |
012c6fcb JA |
1368 | char *var; |
1369 | int varlen; | |
1370 | char **value; | |
1371 | int *valuelen; | |
da8e8fc1 | 1372 | Lisp_Object frame; |
012c6fcb | 1373 | { |
d2bb6598 SM |
1374 | /* Try to find VAR in Vprocess_environment first. */ |
1375 | if (getenv_internal_1 (var, varlen, value, valuelen, | |
1376 | Vprocess_environment)) | |
1377 | return *value ? 1 : 0; | |
f105f403 | 1378 | |
d2bb6598 | 1379 | /* For DISPLAY try to get the values from the frame or the initial env. */ |
de87fb59 | 1380 | if (strcmp (var, "DISPLAY") == 0) |
d2bb6598 SM |
1381 | { |
1382 | Lisp_Object display | |
1383 | = Fframe_parameter (NILP (frame) ? selected_frame : frame, Qdisplay); | |
1384 | if (STRINGP (display)) | |
1385 | { | |
de87fb59 DN |
1386 | *value = (char *) SDATA (display); |
1387 | *valuelen = SBYTES (display); | |
012c6fcb JA |
1388 | return 1; |
1389 | } | |
d2bb6598 SM |
1390 | /* If still not found, Look for DISPLAY in Vinitial_environment. */ |
1391 | if (getenv_internal_1 (var, varlen, value, valuelen, | |
1392 | Vinitial_environment)) | |
1393 | return *value ? 1 : 0; | |
012c6fcb JA |
1394 | } |
1395 | ||
1396 | return 0; | |
1397 | } | |
1398 | ||
f105f403 | 1399 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 2, 0, |
5990851d KL |
1400 | doc: /* Get the value of environment variable VARIABLE. |
1401 | VARIABLE should be a string. Value is nil if VARIABLE is undefined in | |
1402 | the environment. Otherwise, value is a string. | |
f105f403 | 1403 | |
a13f8f50 KL |
1404 | This function searches `process-environment' for VARIABLE. If it is |
1405 | not found there, then it continues the search in the environment list | |
1406 | of the selected frame. | |
5990851d | 1407 | |
db699fc6 SM |
1408 | If optional parameter ENV is a list, then search this list instead of |
1409 | `process-environment', and return t when encountering a negative entry. | |
1410 | ||
1411 | If it is a frame, then this function will ignore `process-environment' and | |
1412 | will simply look up the variable in that frame's environment. */) | |
1413 | (variable, env) | |
1414 | Lisp_Object variable, env; | |
012c6fcb JA |
1415 | { |
1416 | char *value; | |
1417 | int valuelen; | |
1418 | ||
5990851d | 1419 | CHECK_STRING (variable); |
db699fc6 SM |
1420 | if (CONSP (env)) |
1421 | { | |
1422 | if (getenv_internal_1 (SDATA (variable), SBYTES (variable), | |
1423 | &value, &valuelen, env)) | |
1424 | return value ? make_string (value, valuelen) : Qt; | |
1425 | else | |
1426 | return Qnil; | |
1427 | } | |
1428 | else if (getenv_internal (SDATA (variable), SBYTES (variable), | |
d2bb6598 | 1429 | &value, &valuelen, env)) |
012c6fcb JA |
1430 | return make_string (value, valuelen); |
1431 | else | |
1432 | return Qnil; | |
1433 | } | |
1434 | ||
5990851d KL |
1435 | /* A version of getenv that consults the Lisp environment lists, |
1436 | easily callable from C. */ | |
012c6fcb JA |
1437 | char * |
1438 | egetenv (var) | |
e576cab4 | 1439 | char *var; |
012c6fcb JA |
1440 | { |
1441 | char *value; | |
1442 | int valuelen; | |
1443 | ||
f105f403 | 1444 | if (getenv_internal (var, strlen (var), &value, &valuelen, Qnil)) |
012c6fcb JA |
1445 | return value; |
1446 | else | |
1447 | return 0; | |
1448 | } | |
1449 | ||
80856e74 JB |
1450 | #endif /* not VMS */ |
1451 | \f | |
8de15d69 | 1452 | /* This is run before init_cmdargs. */ |
177c0ea7 | 1453 | |
dfcf069d | 1454 | void |
8de15d69 RS |
1455 | init_callproc_1 () |
1456 | { | |
1457 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1458 | char *doc_dir = egetenv ("EMACSDOC"); |
1459 | ||
8de15d69 | 1460 | Vdata_directory |
177c0ea7 | 1461 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1462 | : PATH_DATA)); |
35a2f4b8 KH |
1463 | Vdoc_directory |
1464 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1465 | : PATH_DOC)); | |
9453ea7b | 1466 | |
e576cab4 | 1467 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1468 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1469 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1470 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1471 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1472 | } |
1473 | ||
e17f7533 | 1474 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1475 | |
dfcf069d | 1476 | void |
8de15d69 RS |
1477 | init_callproc () |
1478 | { | |
1479 | char *data_dir = egetenv ("EMACSDATA"); | |
177c0ea7 | 1480 | |
8de15d69 RS |
1481 | register char * sh; |
1482 | Lisp_Object tempdir; | |
1483 | ||
9cc4fad5 | 1484 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1485 | { |
05630743 RS |
1486 | /* Add to the path the lib-src subdir of the installation dir. */ |
1487 | Lisp_Object tem; | |
1488 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1489 | Vinstallation_directory); | |
bad95d8f | 1490 | #ifndef DOS_NT |
1a6640ec | 1491 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc | 1492 | if (NILP (Fmember (tem, Vexec_path))) |
70ec1377 RS |
1493 | { |
1494 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); | |
1495 | Vexec_path = Fcons (tem, Vexec_path); | |
1496 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
1497 | } | |
177c0ea7 | 1498 | |
0fa248bc | 1499 | Vexec_directory = Ffile_name_as_directory (tem); |
bad95d8f | 1500 | #endif /* not DOS_NT */ |
8de15d69 | 1501 | |
e17f7533 RS |
1502 | /* Maybe use ../etc as well as ../lib-src. */ |
1503 | if (data_dir == 0) | |
1504 | { | |
1505 | tem = Fexpand_file_name (build_string ("etc"), | |
1506 | Vinstallation_directory); | |
1507 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1508 | } |
1509 | } | |
7e933683 RS |
1510 | |
1511 | /* Look for the files that should be in etc. We don't use | |
1512 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1513 | near the executable, and they are never in the build |
7e933683 RS |
1514 | directory when that's different from the source directory. |
1515 | ||
1516 | Instead, if these files are not in the nominal place, we try the | |
1517 | source directory. */ | |
1518 | if (data_dir == 0) | |
1519 | { | |
70ec1377 | 1520 | Lisp_Object tem, tem1, srcdir; |
7e933683 | 1521 | |
70ec1377 RS |
1522 | srcdir = Fexpand_file_name (build_string ("../src/"), |
1523 | build_string (PATH_DUMPLOADSEARCH)); | |
7e933683 RS |
1524 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); |
1525 | tem1 = Ffile_exists_p (tem); | |
70ec1377 | 1526 | if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1)) |
7e933683 | 1527 | { |
70ec1377 | 1528 | Lisp_Object newdir; |
7e933683 RS |
1529 | newdir = Fexpand_file_name (build_string ("../etc/"), |
1530 | build_string (PATH_DUMPLOADSEARCH)); | |
1531 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1532 | tem1 = Ffile_exists_p (tem); | |
1533 | if (!NILP (tem1)) | |
1534 | Vdata_directory = newdir; | |
1535 | } | |
1536 | } | |
80856e74 | 1537 | |
d883eb62 RS |
1538 | #ifndef CANNOT_DUMP |
1539 | if (initialized) | |
1540 | #endif | |
1541 | { | |
1542 | tempdir = Fdirectory_file_name (Vexec_directory); | |
d5db4077 | 1543 | if (access (SDATA (tempdir), 0) < 0) |
d883eb62 RS |
1544 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", |
1545 | Vexec_directory); | |
1546 | } | |
80856e74 | 1547 | |
e576cab4 | 1548 | tempdir = Fdirectory_file_name (Vdata_directory); |
d5db4077 | 1549 | if (access (SDATA (tempdir), 0) < 0) |
76d5c6cf RS |
1550 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1551 | Vdata_directory); | |
e576cab4 | 1552 | |
80856e74 JB |
1553 | #ifdef VMS |
1554 | Vshell_file_name = build_string ("*dcl*"); | |
1555 | #else | |
e576cab4 | 1556 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1557 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1558 | #endif | |
8abd035b RS |
1559 | |
1560 | #ifdef VMS | |
1561 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1562 | #else | |
1563 | if (getenv ("TMPDIR")) | |
1564 | { | |
1565 | char *dir = getenv ("TMPDIR"); | |
1566 | Vtemp_file_name_pattern | |
a13f8f50 KL |
1567 | = Fexpand_file_name (build_string ("emacsXXXXXX"), |
1568 | build_string (dir)); | |
8abd035b RS |
1569 | } |
1570 | else | |
1571 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1572 | #endif | |
63789758 | 1573 | |
40b49d4b JB |
1574 | #ifdef DOS_NT |
1575 | Vshared_game_score_directory = Qnil; | |
1576 | #else | |
63789758 RS |
1577 | Vshared_game_score_directory = build_string (PATH_GAME); |
1578 | if (NILP (Ffile_directory_p (Vshared_game_score_directory))) | |
1579 | Vshared_game_score_directory = Qnil; | |
40b49d4b | 1580 | #endif |
9fefd2ba JB |
1581 | } |
1582 | ||
dfcf069d | 1583 | void |
a13f8f50 | 1584 | set_initial_environment () |
9fefd2ba JB |
1585 | { |
1586 | register char **envp; | |
80856e74 JB |
1587 | #ifndef CANNOT_DUMP |
1588 | if (initialized) | |
1589 | #endif | |
a13f8f50 KL |
1590 | { |
1591 | for (envp = environ; *envp; envp++) | |
de87fb59 DN |
1592 | Vprocess_environment = Fcons (build_string (*envp), |
1593 | Vprocess_environment); | |
3c33c79a SM |
1594 | /* Ideally, the `copy' shouldn't be necessary, but it seems it's frequent |
1595 | to use `delete' and friends on process-environment. */ | |
1596 | Vinitial_environment = Fcopy_sequence (Vprocess_environment); | |
a13f8f50 | 1597 | } |
80856e74 JB |
1598 | } |
1599 | ||
dfcf069d | 1600 | void |
80856e74 JB |
1601 | syms_of_callproc () |
1602 | { | |
bad95d8f | 1603 | #ifdef DOS_NT |
093650fe RS |
1604 | Qbuffer_file_type = intern ("buffer-file-type"); |
1605 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1606 | #endif /* DOS_NT */ |
7e6c2178 | 1607 | |
80856e74 | 1608 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
fdb82f93 | 1609 | doc: /* *File name to load inferior shells from. |
b20b29be EZ |
1610 | Initialized from the SHELL environment variable, or to a system-dependent |
1611 | default if SHELL is not set. */); | |
80856e74 JB |
1612 | |
1613 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
fdb82f93 PJ |
1614 | doc: /* *List of directories to search programs to run in subprocesses. |
1615 | Each element is a string (directory name) or nil (try default directory). */); | |
80856e74 | 1616 | |
b81a1b72 | 1617 | DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, |
fdb82f93 PJ |
1618 | doc: /* *List of suffixes to try to find executable file names. |
1619 | Each element is a string. */); | |
33d5af99 | 1620 | Vexec_suffixes = Qnil; |
b81a1b72 | 1621 | |
80856e74 | 1622 | DEFVAR_LISP ("exec-directory", &Vexec_directory, |
fdb82f93 PJ |
1623 | doc: /* Directory for executables for Emacs to invoke. |
1624 | More generally, this includes any architecture-dependent files | |
1625 | that are built and installed from the Emacs distribution. */); | |
e576cab4 JB |
1626 | |
1627 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
fdb82f93 PJ |
1628 | doc: /* Directory of machine-independent files that come with GNU Emacs. |
1629 | These are files intended for Emacs to use while it runs. */); | |
80856e74 | 1630 | |
35a2f4b8 | 1631 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
fdb82f93 | 1632 | doc: /* Directory containing the DOC file that comes with GNU Emacs. |
ebf24b59 | 1633 | This is usually the same as `data-directory'. */); |
35a2f4b8 | 1634 | |
ed61592a | 1635 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
fdb82f93 PJ |
1636 | doc: /* For internal use by the build procedure only. |
1637 | This is the name of the directory in which the build procedure installed | |
ebf24b59 | 1638 | Emacs's info files; the default value for `Info-default-directory-list' |
fdb82f93 | 1639 | includes this. */); |
ed61592a JB |
1640 | Vconfigure_info_directory = build_string (PATH_INFO); |
1641 | ||
1e7ce61b | 1642 | DEFVAR_LISP ("shared-game-score-directory", &Vshared_game_score_directory, |
b065672a CW |
1643 | doc: /* Directory of score files for games which come with GNU Emacs. |
1644 | If this variable is nil, then Emacs is unable to use a shared directory. */); | |
40b49d4b JB |
1645 | #ifdef DOS_NT |
1646 | Vshared_game_score_directory = Qnil; | |
1647 | #else | |
63789758 | 1648 | Vshared_game_score_directory = build_string (PATH_GAME); |
40b49d4b | 1649 | #endif |
b065672a | 1650 | |
8abd035b | 1651 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
fdb82f93 PJ |
1652 | doc: /* Pattern for making names for temporary files. |
1653 | This is used by `call-process-region'. */); | |
0537ec48 | 1654 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1655 | |
6b8e474c SM |
1656 | DEFVAR_LISP ("initial-environment", &Vinitial_environment, |
1657 | doc: /* List of environment variables inherited from the parent process. | |
1658 | Each element should be a string of the form ENVVARNAME=VALUE. | |
1659 | The elements must normally be decoded (using `locale-coding-system') for use. */); | |
1660 | Vinitial_environment = Qnil; | |
1661 | ||
80856e74 | 1662 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
5990851d | 1663 | doc: /* List of overridden environment variables for subprocesses to inherit. |
fdb82f93 | 1664 | Each element should be a string of the form ENVVARNAME=VALUE. |
5990851d | 1665 | |
a13f8f50 KL |
1666 | Entries in this list take precedence to those in the frame-local |
1667 | environments. Therefore, let-binding `process-environment' is an easy | |
1668 | way to temporarily change the value of an environment variable, | |
1669 | irrespective of where it comes from. To use `process-environment' to | |
1670 | remove an environment variable, include only its name in the list, | |
1671 | without "=VALUE". | |
5990851d KL |
1672 | |
1673 | This variable is set to nil when Emacs starts. | |
1674 | ||
fdb82f93 PJ |
1675 | If multiple entries define the same variable, the first one always |
1676 | takes precedence. | |
5990851d | 1677 | |
776a24a1 | 1678 | Non-ASCII characters are encoded according to the initial value of |
5990851d KL |
1679 | `locale-coding-system', i.e. the elements must normally be decoded for |
1680 | use. | |
1681 | ||
776a24a1 | 1682 | See `setenv' and `getenv'. */); |
86f5ca04 | 1683 | Vprocess_environment = Qnil; |
80856e74 JB |
1684 | |
1685 | #ifndef VMS | |
1686 | defsubr (&Scall_process); | |
83fa009c | 1687 | defsubr (&Sgetenv_internal); |
986ffb24 | 1688 | #endif |
e576cab4 | 1689 | defsubr (&Scall_process_region); |
80856e74 | 1690 | } |
6b61353c KH |
1691 | |
1692 | /* arch-tag: 769b8045-1df7-4d2b-8968-e3fb49017f95 | |
1693 | (do not change this comment) */ |