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, |
114f9c96 | 3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
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 JB |
27 | |
28 | /* Define SIGCHLD as an alias for SIGCLD. */ | |
29 | ||
30 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
31 | #define SIGCHLD SIGCLD | |
32 | #endif /* SIGCLD */ | |
33 | ||
34 | #include <sys/types.h> | |
88a64fef | 35 | |
3cbd6585 GM |
36 | #ifdef HAVE_UNISTD_H |
37 | #include <unistd.h> | |
38 | #endif | |
39 | ||
80856e74 | 40 | #include <sys/file.h> |
776a24a1 | 41 | #ifdef HAVE_FCNTL_H |
80856e74 JB |
42 | #include <fcntl.h> |
43 | #endif | |
44 | ||
bad95d8f RS |
45 | #ifdef WINDOWSNT |
46 | #define NOMINMAX | |
47 | #include <windows.h> | |
48 | #include <stdlib.h> /* for proper declaration of environ */ | |
49 | #include <fcntl.h> | |
489f9371 | 50 | #include "w32.h" |
bad95d8f RS |
51 | #define _P_NOWAIT 1 /* from process.h */ |
52 | #endif | |
53 | ||
7e6c2178 RS |
54 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
55 | #include <fcntl.h> | |
56 | #include <sys/stat.h> | |
57 | #include <sys/param.h> | |
7e6c2178 RS |
58 | #endif /* MSDOS */ |
59 | ||
80856e74 JB |
60 | #ifndef O_RDONLY |
61 | #define O_RDONLY 0 | |
62 | #endif | |
63 | ||
64 | #ifndef O_WRONLY | |
65 | #define O_WRONLY 1 | |
66 | #endif | |
67 | ||
68 | #include "lisp.h" | |
69 | #include "commands.h" | |
70 | #include "buffer.h" | |
91183bfd | 71 | #include "character.h" |
edf496dd | 72 | #include "ccl.h" |
32d08644 | 73 | #include "coding.h" |
f0b950cf | 74 | #include "composite.h" |
57bda87a | 75 | #include <epaths.h> |
80856e74 | 76 | #include "process.h" |
d177f194 | 77 | #include "syssignal.h" |
a129418f | 78 | #include "systty.h" |
aba637ec | 79 | #include "blockinput.h" |
f105f403 KL |
80 | #include "frame.h" |
81 | #include "termhooks.h" | |
80856e74 | 82 | |
5f027cea EZ |
83 | #ifdef MSDOS |
84 | #include "msdos.h" | |
85 | #endif | |
86 | ||
03695ace | 87 | #ifndef USE_CRT_DLL |
80856e74 JB |
88 | extern char **environ; |
89 | #endif | |
90 | ||
f95c3f91 | 91 | #ifdef HAVE_SETPGID |
58eb6cf0 | 92 | #if !defined (USG) |
320695d8 | 93 | #undef setpgrp |
f95c3f91 GM |
94 | #define setpgrp setpgid |
95 | #endif | |
2b7e8799 | 96 | #endif |
f95c3f91 | 97 | |
b81a1b72 SM |
98 | Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes; |
99 | Lisp_Object Vdata_directory, Vdoc_directory; | |
1e7ce61b | 100 | Lisp_Object Vconfigure_info_directory, Vshared_game_score_directory; |
f92d51d8 CY |
101 | |
102 | /* Pattern used by call-process-region to make temp files. */ | |
103 | static Lisp_Object Vtemp_file_name_pattern; | |
104 | ||
105 | extern Lisp_Object Vtemporary_file_directory; | |
80856e74 JB |
106 | |
107 | Lisp_Object Vshell_file_name; | |
108 | ||
6b8e474c | 109 | Lisp_Object Vprocess_environment, Vinitial_environment; |
80856e74 | 110 | |
bad95d8f | 111 | #ifdef DOS_NT |
093650fe | 112 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 113 | #endif /* DOS_NT */ |
093650fe | 114 | |
e0f24100 | 115 | /* True if we are about to fork off a synchronous process or if we |
80856e74 JB |
116 | are waiting for it. */ |
117 | int synch_process_alive; | |
118 | ||
119 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
120 | char *synch_process_death; | |
121 | ||
6b61353c KH |
122 | /* Nonzero => this is the signal number that terminated the subprocess. */ |
123 | int synch_process_termsig; | |
124 | ||
80856e74 JB |
125 | /* If synch_process_death is zero, |
126 | this is exit code of synchronous subprocess. */ | |
127 | int synch_process_retcode; | |
f105f403 | 128 | |
80856e74 | 129 | \f |
37d54121 RS |
130 | /* Clean up when exiting Fcall_process. |
131 | On MSDOS, delete the temporary file on any kind of termination. | |
132 | On Unix, kill the process and any children on termination by signal. */ | |
133 | ||
134 | /* Nonzero if this is termination due to exit. */ | |
135 | static int call_process_exited; | |
136 | ||
d2bb6598 SM |
137 | EXFUN (Fgetenv_internal, 2); |
138 | ||
d177f194 | 139 | static Lisp_Object |
971de7fb | 140 | call_process_kill (Lisp_Object fdpid) |
d177f194 | 141 | { |
68c45bf0 | 142 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
143 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
144 | synch_process_alive = 0; | |
145 | return Qnil; | |
146 | } | |
147 | ||
80856e74 | 148 | Lisp_Object |
971de7fb | 149 | call_process_cleanup (Lisp_Object arg) |
80856e74 | 150 | { |
ad3aaf33 AS |
151 | Lisp_Object fdpid = Fcdr (arg); |
152 | #if defined (MSDOS) | |
153 | Lisp_Object file; | |
154 | #else | |
155 | int pid; | |
156 | #endif | |
157 | ||
158 | Fset_buffer (Fcar (arg)); | |
159 | ||
e39a993c | 160 | #if defined (MSDOS) |
7e6c2178 | 161 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 | 162 | file = Fcdr (fdpid); |
68c45bf0 | 163 | emacs_close (XFASTINT (Fcar (fdpid))); |
d5db4077 KR |
164 | if (strcmp (SDATA (file), NULL_DEVICE) != 0) |
165 | unlink (SDATA (file)); | |
e39a993c | 166 | #else /* not MSDOS */ |
ad3aaf33 | 167 | pid = XFASTINT (Fcdr (fdpid)); |
d177f194 | 168 | |
37d54121 | 169 | if (call_process_exited) |
6b6e798b | 170 | { |
68c45bf0 | 171 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
172 | return Qnil; |
173 | } | |
37d54121 | 174 | |
d177f194 JB |
175 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
176 | { | |
aed13378 | 177 | int count = SPECPDL_INDEX (); |
d177f194 JB |
178 | record_unwind_protect (call_process_kill, fdpid); |
179 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
180 | immediate_quit = 1; | |
181 | QUIT; | |
182 | wait_for_termination (pid); | |
183 | immediate_quit = 0; | |
184 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
185 | message1 ("Waiting for process to die...done"); | |
186 | } | |
80856e74 | 187 | synch_process_alive = 0; |
68c45bf0 | 188 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 189 | #endif /* not MSDOS */ |
80856e74 JB |
190 | return Qnil; |
191 | } | |
192 | ||
193 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
fdb82f93 PJ |
194 | doc: /* Call PROGRAM synchronously in separate process. |
195 | The remaining arguments are optional. | |
196 | The program's input comes from file INFILE (nil means `/dev/null'). | |
197 | Insert output in BUFFER before point; t means current buffer; | |
198 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
199 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
200 | REAL-BUFFER says what to do with standard output, as above, | |
201 | while STDERR-FILE says what to do with standard error in the child. | |
202 | STDERR-FILE may be nil (discard standard error output), | |
203 | t (mix it with ordinary output), or a file name string. | |
204 | ||
205 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
206 | Remaining arguments are strings passed as command arguments to PROGRAM. | |
207 | ||
a4feb144 RS |
208 | If executable PROGRAM can't be found as an executable, `call-process' |
209 | signals a Lisp error. `call-process' reports errors in execution of | |
210 | the program only through its return and output. | |
211 | ||
fdb82f93 PJ |
212 | If BUFFER is 0, `call-process' returns immediately with value nil. |
213 | Otherwise it waits for PROGRAM to terminate | |
214 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
215 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
216 | ||
217 | usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 218 | (nargs, args) |
80856e74 JB |
219 | int nargs; |
220 | register Lisp_Object *args; | |
221 | { | |
0aa2630f KS |
222 | Lisp_Object infile, buffer, current_dir, path; |
223 | int display_p; | |
80856e74 JB |
224 | int fd[2]; |
225 | int filefd; | |
226 | register int pid; | |
4da256b1 KS |
227 | #define CALLPROC_BUFFER_SIZE_MIN (16 * 1024) |
228 | #define CALLPROC_BUFFER_SIZE_MAX (4 * CALLPROC_BUFFER_SIZE_MIN) | |
229 | char buf[CALLPROC_BUFFER_SIZE_MAX]; | |
230 | int bufsize = CALLPROC_BUFFER_SIZE_MIN; | |
aed13378 | 231 | int count = SPECPDL_INDEX (); |
2d607244 | 232 | |
1aa83b22 | 233 | register const unsigned char **new_argv; |
39eaa782 RS |
234 | /* File to use for stderr in the child. |
235 | t means use same as standard output. */ | |
236 | Lisp_Object error_file; | |
7e6c2178 RS |
237 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
238 | char *outf, *tempfile; | |
239 | int outfilefd; | |
80856e74 | 240 | #endif |
32d08644 KH |
241 | struct coding_system process_coding; /* coding-system of process output */ |
242 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
243 | /* Set to the return value of Ffind_operation_coding_system. */ |
244 | Lisp_Object coding_systems; | |
245 | ||
246 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
247 | coding_systems = Qt; | |
32d08644 | 248 | |
b7826503 | 249 | CHECK_STRING (args[0]); |
80856e74 | 250 | |
39eaa782 RS |
251 | error_file = Qt; |
252 | ||
7e6c2178 RS |
253 | #ifndef subprocesses |
254 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
177c0ea7 | 255 | if (nargs >= 3 |
09ffb8b5 | 256 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
257 | error ("Operating system cannot handle asynchronous subprocesses"); |
258 | #endif /* subprocesses */ | |
259 | ||
09494912 | 260 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
261 | { |
262 | Lisp_Object val, *args2; | |
32d08644 KH |
263 | int i; |
264 | ||
265 | /* If arguments are supplied, we may have to encode them. */ | |
266 | if (nargs >= 5) | |
267 | { | |
30d57b8e | 268 | int must_encode = 0; |
6e50da0a | 269 | Lisp_Object coding_attrs; |
30d57b8e | 270 | |
e7c1c20e | 271 | for (i = 4; i < nargs; i++) |
b7826503 | 272 | CHECK_STRING (args[i]); |
e7c1c20e | 273 | |
a2286b5c | 274 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
275 | if (STRING_MULTIBYTE (args[i])) |
276 | must_encode = 1; | |
277 | ||
beacaab3 KH |
278 | if (!NILP (Vcoding_system_for_write)) |
279 | val = Vcoding_system_for_write; | |
30d57b8e | 280 | else if (! must_encode) |
beacaab3 KH |
281 | val = Qnil; |
282 | else | |
32d08644 KH |
283 | { |
284 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
285 | args2[0] = Qcall_process; | |
286 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 287 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 288 | if (CONSP (coding_systems)) |
70949dac | 289 | val = XCDR (coding_systems); |
776b95cb | 290 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 291 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
292 | else |
293 | val = Qnil; | |
32d08644 | 294 | } |
b4413d9f | 295 | val = coding_inherit_eol_type (val, Qnil); |
32d08644 | 296 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); |
6e50da0a KH |
297 | coding_attrs = CODING_ID_ATTRS (argument_coding.id); |
298 | if (NILP (CODING_ATTR_ASCII_COMPAT (coding_attrs))) | |
299 | { | |
300 | /* We should not use an ASCII incompatible coding system. */ | |
301 | val = raw_text_coding_system (val); | |
302 | setup_coding_system (val, &argument_coding); | |
303 | } | |
32d08644 | 304 | } |
32d08644 KH |
305 | } |
306 | ||
e576cab4 JB |
307 | if (nargs >= 2 && ! NILP (args[1])) |
308 | { | |
309 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
b7826503 | 310 | CHECK_STRING (infile); |
e576cab4 | 311 | } |
80856e74 | 312 | else |
5437e9f9 | 313 | infile = build_string (NULL_DEVICE); |
80856e74 | 314 | |
e576cab4 JB |
315 | if (nargs >= 3) |
316 | { | |
39eaa782 RS |
317 | buffer = args[2]; |
318 | ||
319 | /* If BUFFER is a list, its meaning is | |
320 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
321 | if (CONSP (buffer)) | |
322 | { | |
70949dac | 323 | if (CONSP (XCDR (buffer))) |
45be8a1e | 324 | { |
a9d4f28a | 325 | Lisp_Object stderr_file; |
70949dac | 326 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
327 | |
328 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
329 | error_file = stderr_file; | |
330 | else | |
331 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
332 | } | |
333 | ||
70949dac | 334 | buffer = XCAR (buffer); |
39eaa782 | 335 | } |
044512ed | 336 | |
39eaa782 RS |
337 | if (!(EQ (buffer, Qnil) |
338 | || EQ (buffer, Qt) | |
3ffde7d6 | 339 | || INTEGERP (buffer))) |
e576cab4 | 340 | { |
39eaa782 RS |
341 | Lisp_Object spec_buffer; |
342 | spec_buffer = buffer; | |
50fe359b | 343 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
344 | /* Mention the buffer name for a better error message. */ |
345 | if (NILP (buffer)) | |
b7826503 PJ |
346 | CHECK_BUFFER (spec_buffer); |
347 | CHECK_BUFFER (buffer); | |
e576cab4 JB |
348 | } |
349 | } | |
177c0ea7 | 350 | else |
e576cab4 | 351 | buffer = Qnil; |
80856e74 | 352 | |
58616e67 JB |
353 | /* Make sure that the child will be able to chdir to the current |
354 | buffer's current directory, or its unhandled equivalent. We | |
355 | can't just have the child check for an error when it does the | |
356 | chdir, since it's in a vfork. | |
357 | ||
358 | We have to GCPRO around this because Fexpand_file_name, | |
359 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
360 | might call a file name handling function. The argument list is | |
361 | protected by the caller, so all we really have to worry about is | |
362 | buffer. */ | |
363 | { | |
34b87689 | 364 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
58616e67 JB |
365 | |
366 | current_dir = current_buffer->directory; | |
367 | ||
34b87689 | 368 | GCPRO4 (infile, buffer, current_dir, error_file); |
58616e67 | 369 | |
ca319910 SM |
370 | current_dir = Funhandled_file_name_directory (current_dir); |
371 | if (NILP (current_dir)) | |
372 | /* If the file name handler says that current_dir is unreachable, use | |
373 | a sensible default. */ | |
374 | current_dir = build_string ("~/"); | |
375 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
db8454b0 CY |
376 | current_dir = Ffile_name_as_directory (current_dir); |
377 | ||
58616e67 JB |
378 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
379 | report_file_error ("Setting current directory", | |
380 | Fcons (current_buffer->directory, Qnil)); | |
381 | ||
34b87689 KH |
382 | if (STRING_MULTIBYTE (infile)) |
383 | infile = ENCODE_FILE (infile); | |
384 | if (STRING_MULTIBYTE (current_dir)) | |
385 | current_dir = ENCODE_FILE (current_dir); | |
386 | if (STRINGP (error_file) && STRING_MULTIBYTE (error_file)) | |
387 | error_file = ENCODE_FILE (error_file); | |
58616e67 JB |
388 | UNGCPRO; |
389 | } | |
390 | ||
0aa2630f | 391 | display_p = INTERACTIVE && nargs >= 4 && !NILP (args[3]); |
80856e74 | 392 | |
d5db4077 | 393 | filefd = emacs_open (SDATA (infile), O_RDONLY, 0); |
80856e74 JB |
394 | if (filefd < 0) |
395 | { | |
34b87689 | 396 | infile = DECODE_FILE (infile); |
e576cab4 | 397 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
398 | } |
399 | /* Search for program; barf if not found. */ | |
c52b0b34 | 400 | { |
ad3aaf33 | 401 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
c52b0b34 | 402 | |
ad3aaf33 | 403 | GCPRO4 (infile, buffer, current_dir, error_file); |
5c150961 | 404 | openp (Vexec_path, args[0], Vexec_suffixes, &path, make_number (X_OK)); |
c52b0b34 KH |
405 | UNGCPRO; |
406 | } | |
012c6fcb | 407 | if (NILP (path)) |
80856e74 | 408 | { |
68c45bf0 | 409 | emacs_close (filefd); |
80856e74 JB |
410 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
411 | } | |
8ee8f447 RS |
412 | |
413 | /* If program file name starts with /: for quoting a magic name, | |
414 | discard that. */ | |
415 | if (SBYTES (path) > 2 && SREF (path, 0) == '/' | |
416 | && SREF (path, 1) == ':') | |
417 | path = Fsubstring (path, make_number (2), Qnil); | |
418 | ||
1aa83b22 AS |
419 | new_argv = (const unsigned char **) |
420 | alloca (max (2, nargs - 2) * sizeof (char *)); | |
c364e618 KH |
421 | if (nargs > 4) |
422 | { | |
423 | register int i; | |
ad3aaf33 | 424 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
c364e618 | 425 | |
ad3aaf33 | 426 | GCPRO5 (infile, buffer, current_dir, path, error_file); |
c5bfa12b KH |
427 | argument_coding.dst_multibyte = 0; |
428 | for (i = 4; i < nargs; i++) | |
c364e618 | 429 | { |
c5bfa12b KH |
430 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
431 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
91183bfd KH |
432 | /* We must encode this argument. */ |
433 | args[i] = encode_coding_string (&argument_coding, args[i], 1); | |
c364e618 | 434 | } |
c5bfa12b | 435 | UNGCPRO; |
1aa83b22 AS |
436 | for (i = 4; i < nargs; i++) |
437 | new_argv[i - 3] = SDATA (args[i]); | |
438 | new_argv[i - 3] = 0; | |
c364e618 | 439 | } |
db54baaa KH |
440 | else |
441 | new_argv[1] = 0; | |
1aa83b22 | 442 | new_argv[0] = SDATA (path); |
80856e74 | 443 | |
7e6c2178 | 444 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 445 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
446 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
447 | else | |
448 | { | |
449 | tempfile = alloca (20); | |
450 | *tempfile = '\0'; | |
451 | } | |
452 | dostounix_filename (tempfile); | |
177c0ea7 | 453 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') |
7e6c2178 RS |
454 | strcat (tempfile, "/"); |
455 | strcat (tempfile, "detmp.XXX"); | |
456 | mktemp (tempfile); | |
457 | ||
458 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
459 | if (outfilefd < 0) | |
460 | { | |
68c45bf0 | 461 | emacs_close (filefd); |
6f89d28a MB |
462 | report_file_error ("Opening process output file", |
463 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 464 | } |
6f89d28a | 465 | fd[0] = filefd; |
2610078a | 466 | fd[1] = outfilefd; |
6f89d28a | 467 | #endif /* MSDOS */ |
7e6c2178 | 468 | |
d50d3dc8 | 469 | if (INTEGERP (buffer)) |
68c45bf0 | 470 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
471 | else |
472 | { | |
7e6c2178 | 473 | #ifndef MSDOS |
db92b288 GM |
474 | errno = 0; |
475 | if (pipe (fd) == -1) | |
476 | { | |
477 | emacs_close (filefd); | |
478 | report_file_error ("Creating process pipe", Qnil); | |
479 | } | |
80856e74 JB |
480 | #endif |
481 | } | |
482 | ||
483 | { | |
484 | /* child_setup must clobber environ in systems with true vfork. | |
485 | Protect it from permanent change. */ | |
486 | register char **save_environ = environ; | |
487 | register int fd1 = fd[1]; | |
39eaa782 | 488 | int fd_error = fd1; |
80856e74 JB |
489 | |
490 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 491 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
492 | #endif |
493 | ||
494 | /* Record that we're about to create a synchronous process. */ | |
495 | synch_process_alive = 1; | |
496 | ||
5c03767e RS |
497 | /* These vars record information from process termination. |
498 | Clear them now before process can possibly terminate, | |
499 | to avoid timing error if process terminates soon. */ | |
500 | synch_process_death = 0; | |
501 | synch_process_retcode = 0; | |
6b61353c | 502 | synch_process_termsig = 0; |
5c03767e | 503 | |
39eaa782 | 504 | if (NILP (error_file)) |
68c45bf0 | 505 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
506 | else if (STRINGP (error_file)) |
507 | { | |
508 | #ifdef DOS_NT | |
d5db4077 | 509 | fd_error = emacs_open (SDATA (error_file), |
68c45bf0 PE |
510 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
511 | S_IREAD | S_IWRITE); | |
39eaa782 | 512 | #else /* not DOS_NT */ |
d5db4077 | 513 | fd_error = creat (SDATA (error_file), 0666); |
39eaa782 RS |
514 | #endif /* not DOS_NT */ |
515 | } | |
516 | ||
517 | if (fd_error < 0) | |
518 | { | |
68c45bf0 | 519 | emacs_close (filefd); |
6f89d28a | 520 | if (fd[0] != filefd) |
68c45bf0 | 521 | emacs_close (fd[0]); |
39eaa782 | 522 | if (fd1 >= 0) |
68c45bf0 | 523 | emacs_close (fd1); |
6f89d28a MB |
524 | #ifdef MSDOS |
525 | unlink (tempfile); | |
526 | #endif | |
34b87689 KH |
527 | if (NILP (error_file)) |
528 | error_file = build_string (NULL_DEVICE); | |
529 | else if (STRINGP (error_file)) | |
530 | error_file = DECODE_FILE (error_file); | |
531 | report_file_error ("Cannot redirect stderr", Fcons (error_file, Qnil)); | |
39eaa782 | 532 | } |
89e1ec1d | 533 | |
2610078a | 534 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 535 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
536 | exit status, not its PID, so we assign it to `synch_process_retcode' |
537 | below. */ | |
c17c4250 EZ |
538 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
539 | 0, current_dir); | |
39eaa782 | 540 | |
2610078a KH |
541 | /* Record that the synchronous process exited and note its |
542 | termination status. */ | |
543 | synch_process_alive = 0; | |
544 | synch_process_retcode = pid; | |
545 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 546 | { |
ca9c0567 | 547 | synchronize_system_messages_locale (); |
68c45bf0 PE |
548 | synch_process_death = strerror (errno); |
549 | } | |
2610078a | 550 | |
68c45bf0 | 551 | emacs_close (outfilefd); |
2610078a | 552 | if (fd_error != outfilefd) |
68c45bf0 | 553 | emacs_close (fd_error); |
2610078a | 554 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
555 | /* Since CRLF is converted to LF within `decode_coding', we can |
556 | always open a file with binary mode. */ | |
68c45bf0 | 557 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
558 | if (fd[0] < 0) |
559 | { | |
560 | unlink (tempfile); | |
68c45bf0 | 561 | emacs_close (filefd); |
2610078a KH |
562 | report_file_error ("Cannot re-open temporary file", Qnil); |
563 | } | |
564 | #else /* not MSDOS */ | |
bad95d8f | 565 | #ifdef WINDOWSNT |
2d607244 RS |
566 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
567 | 0, current_dir); | |
bad95d8f | 568 | #else /* not WINDOWSNT */ |
aba637ec KS |
569 | BLOCK_INPUT; |
570 | ||
80856e74 JB |
571 | pid = vfork (); |
572 | ||
573 | if (pid == 0) | |
574 | { | |
575 | if (fd[0] >= 0) | |
68c45bf0 | 576 | emacs_close (fd[0]); |
1e7963c7 RS |
577 | #ifdef HAVE_SETSID |
578 | setsid (); | |
579 | #endif | |
58eb6cf0 | 580 | #if defined (USG) |
80856e74 JB |
581 | setpgrp (); |
582 | #else | |
583 | setpgrp (pid, pid); | |
584 | #endif /* USG */ | |
2d607244 RS |
585 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
586 | 0, current_dir); | |
80856e74 | 587 | } |
aba637ec KS |
588 | |
589 | UNBLOCK_INPUT; | |
bad95d8f | 590 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
591 | |
592 | /* The MSDOS case did this already. */ | |
593 | if (fd_error >= 0) | |
68c45bf0 | 594 | emacs_close (fd_error); |
2610078a | 595 | #endif /* not MSDOS */ |
80856e74 | 596 | |
80856e74 JB |
597 | environ = save_environ; |
598 | ||
6b6e798b RS |
599 | /* Close most of our fd's, but not fd[0] |
600 | since we will use that to read input from. */ | |
68c45bf0 | 601 | emacs_close (filefd); |
799abb26 | 602 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 603 | emacs_close (fd1); |
80856e74 JB |
604 | } |
605 | ||
606 | if (pid < 0) | |
607 | { | |
6b6e798b | 608 | if (fd[0] >= 0) |
68c45bf0 | 609 | emacs_close (fd[0]); |
80856e74 JB |
610 | report_file_error ("Doing vfork", Qnil); |
611 | } | |
612 | ||
d50d3dc8 | 613 | if (INTEGERP (buffer)) |
80856e74 | 614 | { |
6b6e798b | 615 | if (fd[0] >= 0) |
68c45bf0 | 616 | emacs_close (fd[0]); |
80856e74 | 617 | #ifndef subprocesses |
e576cab4 JB |
618 | /* If Emacs has been built with asynchronous subprocess support, |
619 | we don't need to do this, I think because it will then have | |
620 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
621 | wait_without_blocking (); |
622 | #endif /* subprocesses */ | |
80856e74 JB |
623 | return Qnil; |
624 | } | |
625 | ||
6b6e798b | 626 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
627 | call_process_exited = 0; |
628 | ||
e39a993c | 629 | #if defined(MSDOS) |
7e6c2178 RS |
630 | /* MSDOS needs different cleanup information. */ |
631 | record_unwind_protect (call_process_cleanup, | |
ad3aaf33 AS |
632 | Fcons (Fcurrent_buffer (), |
633 | Fcons (make_number (fd[0]), | |
634 | build_string (tempfile)))); | |
7e6c2178 | 635 | #else |
80856e74 | 636 | record_unwind_protect (call_process_cleanup, |
ad3aaf33 AS |
637 | Fcons (Fcurrent_buffer (), |
638 | Fcons (make_number (fd[0]), make_number (pid)))); | |
e39a993c | 639 | #endif /* not MSDOS */ |
80856e74 JB |
640 | |
641 | ||
d50d3dc8 | 642 | if (BUFFERP (buffer)) |
80856e74 JB |
643 | Fset_buffer (buffer); |
644 | ||
09494912 RS |
645 | if (NILP (buffer)) |
646 | { | |
647 | /* If BUFFER is nil, we must read process output once and then | |
648 | discard it, so setup coding system but with nil. */ | |
649 | setup_coding_system (Qnil, &process_coding); | |
650 | } | |
651 | else | |
652 | { | |
653 | Lisp_Object val, *args2; | |
654 | ||
655 | val = Qnil; | |
656 | if (!NILP (Vcoding_system_for_read)) | |
657 | val = Vcoding_system_for_read; | |
658 | else | |
659 | { | |
660 | if (EQ (coding_systems, Qt)) | |
661 | { | |
662 | int i; | |
663 | ||
664 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
665 | args2[0] = Qcall_process; | |
666 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
667 | coding_systems | |
668 | = Ffind_operation_coding_system (nargs + 1, args2); | |
669 | } | |
670 | if (CONSP (coding_systems)) | |
70949dac | 671 | val = XCAR (coding_systems); |
09494912 | 672 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 673 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
674 | else |
675 | val = Qnil; | |
676 | } | |
91183bfd | 677 | Fcheck_coding_system (val); |
09494912 RS |
678 | /* In unibyte mode, character code conversion should not take |
679 | place but EOL conversion should. So, setup raw-text or one | |
680 | of the subsidiary according to the information just setup. */ | |
681 | if (NILP (current_buffer->enable_multibyte_characters) | |
682 | && !NILP (val)) | |
91183bfd KH |
683 | val = raw_text_coding_system (val); |
684 | setup_coding_system (val, &process_coding); | |
09494912 RS |
685 | } |
686 | ||
80856e74 JB |
687 | immediate_quit = 1; |
688 | QUIT; | |
689 | ||
690 | { | |
691 | register int nread; | |
0ad477db | 692 | int first = 1; |
6e3bfbb2 | 693 | int total_read = 0; |
321fecde | 694 | int carryover = 0; |
0aa2630f | 695 | int display_on_the_fly = display_p; |
05b44e90 KH |
696 | struct coding_system saved_coding; |
697 | ||
698 | saved_coding = process_coding; | |
60558b19 | 699 | while (1) |
80856e74 | 700 | { |
60558b19 RS |
701 | /* Repeatedly read until we've filled as much as possible |
702 | of the buffer size we have. But don't read | |
8e6208c5 | 703 | less than 1024--save that for the next bufferful. */ |
321fecde | 704 | nread = carryover; |
60558b19 | 705 | while (nread < bufsize - 1024) |
00fb3e95 | 706 | { |
4da256b1 | 707 | int this_read = emacs_read (fd[0], buf + nread, |
68c45bf0 | 708 | bufsize - nread); |
60558b19 RS |
709 | |
710 | if (this_read < 0) | |
711 | goto give_up; | |
712 | ||
713 | if (this_read == 0) | |
7a7ab107 KH |
714 | { |
715 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
716 | break; | |
717 | } | |
60558b19 RS |
718 | |
719 | nread += this_read; | |
7a7ab107 | 720 | total_read += this_read; |
60558b19 | 721 | |
7a7ab107 KH |
722 | if (display_on_the_fly) |
723 | break; | |
724 | } | |
60558b19 RS |
725 | |
726 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 727 | immediate_quit = 0; |
177c0ea7 | 728 | |
012c6fcb | 729 | if (!NILP (buffer)) |
32d08644 | 730 | { |
bb4a3884 KH |
731 | if (NILP (current_buffer->enable_multibyte_characters) |
732 | && ! CODING_MAY_REQUIRE_DECODING (&process_coding)) | |
4da256b1 | 733 | insert_1_both (buf, nread, nread, 0, 1, 0); |
32d08644 KH |
734 | else |
735 | { /* We have to decode the input. */ | |
45d60801 | 736 | Lisp_Object curbuf; |
71a0c011 | 737 | int count1 = SPECPDL_INDEX (); |
177c0ea7 | 738 | |
45d60801 | 739 | XSETBUFFER (curbuf, current_buffer); |
71a0c011 EZ |
740 | /* We cannot allow after-change-functions be run |
741 | during decoding, because that might modify the | |
742 | buffer, while we rely on process_coding.produced to | |
743 | faithfully reflect inserted text until we | |
744 | TEMP_SET_PT_BOTH below. */ | |
745 | specbind (Qinhibit_modification_hooks, Qt); | |
45d60801 KH |
746 | decode_coding_c_string (&process_coding, buf, nread, |
747 | curbuf); | |
71a0c011 | 748 | unbind_to (count1, Qnil); |
7a7ab107 | 749 | if (display_on_the_fly |
91183bfd KH |
750 | && CODING_REQUIRE_DETECTION (&saved_coding) |
751 | && ! CODING_REQUIRE_DETECTION (&process_coding)) | |
7a7ab107 KH |
752 | { |
753 | /* We have detected some coding system. But, | |
754 | there's a possibility that the detection was | |
755 | done by insufficient data. So, we give up | |
756 | displaying on the fly. */ | |
91183bfd KH |
757 | if (process_coding.produced > 0) |
758 | del_range_2 (process_coding.dst_pos, | |
759 | process_coding.dst_pos_byte, | |
760 | process_coding.dst_pos | |
761 | + process_coding.produced_char, | |
762 | process_coding.dst_pos_byte | |
763 | + process_coding.produced, 0); | |
7a7ab107 KH |
764 | display_on_the_fly = 0; |
765 | process_coding = saved_coding; | |
766 | carryover = nread; | |
0aa2630f KS |
767 | /* This is to make the above condition always |
768 | fails in the future. */ | |
21d0467f KH |
769 | saved_coding.common_flags |
770 | &= ~CODING_REQUIRE_DETECTION_MASK; | |
7a7ab107 KH |
771 | continue; |
772 | } | |
177c0ea7 | 773 | |
ea99bcc1 KH |
774 | TEMP_SET_PT_BOTH (PT + process_coding.produced_char, |
775 | PT_BYTE + process_coding.produced); | |
54ab3d3b | 776 | carryover = process_coding.carryover_bytes; |
321fecde | 777 | if (carryover > 0) |
c5bfa12b KH |
778 | /* As CARRYOVER should not be that large, we had |
779 | better avoid overhead of bcopy. */ | |
45d60801 | 780 | BCOPY_SHORT (process_coding.carryover, buf, |
54ab3d3b | 781 | process_coding.carryover_bytes); |
32d08644 KH |
782 | } |
783 | } | |
c5bfa12b | 784 | |
321fecde | 785 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 786 | break; |
6e3bfbb2 RS |
787 | |
788 | /* Make the buffer bigger as we continue to read more data, | |
4da256b1 KS |
789 | but not past CALLPROC_BUFFER_SIZE_MAX. */ |
790 | if (bufsize < CALLPROC_BUFFER_SIZE_MAX && total_read > 32 * bufsize) | |
791 | if ((bufsize *= 2) > CALLPROC_BUFFER_SIZE_MAX) | |
792 | bufsize = CALLPROC_BUFFER_SIZE_MAX; | |
6e3bfbb2 | 793 | |
0aa2630f | 794 | if (display_p) |
0ad477db RS |
795 | { |
796 | if (first) | |
797 | prepare_menu_bars (); | |
798 | first = 0; | |
3007ebfb | 799 | redisplay_preserve_echo_area (1); |
0aa2630f KS |
800 | /* This variable might have been set to 0 for code |
801 | detection. In that case, we set it back to 1 because | |
802 | we should have already detected a coding system. */ | |
803 | display_on_the_fly = 1; | |
0ad477db | 804 | } |
80856e74 JB |
805 | immediate_quit = 1; |
806 | QUIT; | |
807 | } | |
60558b19 | 808 | give_up: ; |
80856e74 | 809 | |
91183bfd KH |
810 | Vlast_coding_system_used = CODING_ID_NAME (process_coding.id); |
811 | /* If the caller required, let the buffer inherit the | |
812 | coding-system used to decode the process output. */ | |
813 | if (inherit_process_coding_system) | |
814 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
ad3aaf33 | 815 | make_number (total_read)); |
3b440bb5 EZ |
816 | } |
817 | ||
80856e74 JB |
818 | /* Wait for it to terminate, unless it already has. */ |
819 | wait_for_termination (pid); | |
820 | ||
821 | immediate_quit = 0; | |
822 | ||
37d54121 RS |
823 | /* Don't kill any children that the subprocess may have left behind |
824 | when exiting. */ | |
825 | call_process_exited = 1; | |
826 | ||
80856e74 JB |
827 | unbind_to (count, Qnil); |
828 | ||
6b61353c KH |
829 | if (synch_process_termsig) |
830 | { | |
831 | char *signame; | |
832 | ||
833 | synchronize_system_messages_locale (); | |
834 | signame = strsignal (synch_process_termsig); | |
835 | ||
836 | if (signame == 0) | |
837 | signame = "unknown"; | |
838 | ||
839 | synch_process_death = signame; | |
840 | } | |
841 | ||
80856e74 | 842 | if (synch_process_death) |
68c45bf0 PE |
843 | return code_convert_string_norecord (build_string (synch_process_death), |
844 | Vlocale_coding_system, 0); | |
80856e74 JB |
845 | return make_number (synch_process_retcode); |
846 | } | |
80856e74 | 847 | \f |
9fefd2ba | 848 | static Lisp_Object |
971de7fb | 849 | delete_temp_file (Lisp_Object name) |
80856e74 | 850 | { |
1a271e14 KR |
851 | /* Suppress jka-compr handling, etc. */ |
852 | int count = SPECPDL_INDEX (); | |
853 | specbind (intern ("file-name-handler-alist"), Qnil); | |
f1a5d776 | 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; | |
7e6c2178 | 894 | char *tempfile; |
f92d51d8 | 895 | Lisp_Object tmpdir, pattern; |
7e6c2178 | 896 | |
f92d51d8 CY |
897 | if (STRINGP (Vtemporary_file_directory)) |
898 | tmpdir = Vtemporary_file_directory; | |
7e6c2178 RS |
899 | else |
900 | { | |
f92d51d8 CY |
901 | #ifndef DOS_NT |
902 | if (getenv ("TMPDIR")) | |
903 | tmpdir = build_string (getenv ("TMPDIR")); | |
904 | else | |
905 | tmpdir = build_string ("/tmp/"); | |
906 | #else /* DOS_NT */ | |
907 | char *outf; | |
908 | if ((outf = egetenv ("TMPDIR")) | |
909 | || (outf = egetenv ("TMP")) | |
910 | || (outf = egetenv ("TEMP"))) | |
911 | tmpdir = build_string (outf); | |
912 | else | |
913 | tmpdir = Ffile_name_as_directory (build_string ("c:/temp")); | |
0774fcf8 | 914 | #endif |
f92d51d8 | 915 | } |
7e6c2178 | 916 | |
f92d51d8 CY |
917 | pattern = Fexpand_file_name (Vtemp_file_name_pattern, tmpdir); |
918 | tempfile = (char *) alloca (SBYTES (pattern) + 1); | |
919 | bcopy (SDATA (pattern), tempfile, SBYTES (pattern) + 1); | |
09494912 RS |
920 | coding_systems = Qt; |
921 | ||
1ddc85a4 DL |
922 | #ifdef HAVE_MKSTEMP |
923 | { | |
d277f1f7 YM |
924 | int fd; |
925 | ||
926 | BLOCK_INPUT; | |
927 | fd = mkstemp (tempfile); | |
928 | UNBLOCK_INPUT; | |
1ddc85a4 DL |
929 | if (fd == -1) |
930 | report_file_error ("Failed to open temporary file", | |
931 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
932 | else | |
933 | close (fd); | |
934 | } | |
935 | #else | |
80856e74 | 936 | mktemp (tempfile); |
1ddc85a4 | 937 | #endif |
80856e74 JB |
938 | |
939 | filename_string = build_string (tempfile); | |
39323a7e | 940 | GCPRO1 (filename_string); |
80856e74 JB |
941 | start = args[0]; |
942 | end = args[1]; | |
32d08644 | 943 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
944 | if (!NILP (Vcoding_system_for_write)) |
945 | val = Vcoding_system_for_write; | |
946 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
947 | val = Qnil; |
948 | else | |
beacaab3 | 949 | { |
91489411 RS |
950 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
951 | args2[0] = Qcall_process_region; | |
952 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
953 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
954 | if (CONSP (coding_systems)) | |
70949dac | 955 | val = XCDR (coding_systems); |
91489411 | 956 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 957 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 958 | else |
91489411 | 959 | val = Qnil; |
beacaab3 | 960 | } |
32d08644 | 961 | |
168afdaa | 962 | { |
aed13378 | 963 | int count1 = SPECPDL_INDEX (); |
168afdaa RS |
964 | |
965 | specbind (intern ("coding-system-for-write"), val); | |
bb951f0e KR |
966 | /* POSIX lets mk[s]temp use "."; don't invoke jka-compr if we |
967 | happen to get a ".Z" suffix. */ | |
968 | specbind (intern ("file-name-handler-alist"), Qnil); | |
168afdaa RS |
969 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); |
970 | ||
971 | unbind_to (count1, Qnil); | |
972 | } | |
91489411 | 973 | |
177c0ea7 | 974 | /* Note that Fcall_process takes care of binding |
91489411 | 975 | coding-system-for-read. */ |
093650fe | 976 | |
80856e74 JB |
977 | record_unwind_protect (delete_temp_file, filename_string); |
978 | ||
edf496dd | 979 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
980 | Fdelete_region (start, end); |
981 | ||
edf496dd KH |
982 | if (nargs > 3) |
983 | { | |
984 | args += 2; | |
985 | nargs -= 2; | |
986 | } | |
987 | else | |
988 | { | |
989 | args[0] = args[2]; | |
990 | nargs = 2; | |
991 | } | |
992 | args[1] = filename_string; | |
80856e74 | 993 | |
edf496dd | 994 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
995 | } |
996 | \f | |
971de7fb | 997 | static int relocate_fd (int fd, int minfd); |
dfcf069d | 998 | |
5990851d KL |
999 | static char ** |
1000 | add_env (char **env, char **new_env, char *string) | |
1001 | { | |
1002 | char **ep; | |
1003 | int ok = 1; | |
1004 | if (string == NULL) | |
1005 | return new_env; | |
1006 | ||
1007 | /* See if this string duplicates any string already in the env. | |
1008 | If so, don't put it in. | |
1009 | When an env var has multiple definitions, | |
1010 | we keep the definition that comes first in process-environment. */ | |
1011 | for (ep = env; ok && ep != new_env; ep++) | |
1012 | { | |
1013 | char *p = *ep, *q = string; | |
1014 | while (ok) | |
1015 | { | |
1016 | if (*q != *p) | |
1017 | break; | |
1018 | if (*q == 0) | |
1019 | /* The string is a lone variable name; keep it for now, we | |
1020 | will remove it later. It is a placeholder for a | |
1021 | variable that is not to be included in the environment. */ | |
1022 | break; | |
1023 | if (*q == '=') | |
1024 | ok = 0; | |
1025 | p++, q++; | |
1026 | } | |
1027 | } | |
1028 | if (ok) | |
1029 | *new_env++ = string; | |
1030 | return new_env; | |
1031 | } | |
1032 | ||
80856e74 JB |
1033 | /* This is the last thing run in a newly forked inferior |
1034 | either synchronous or asynchronous. | |
1035 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1036 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1037 | then exec another program based on new_argv. | |
1038 | ||
1039 | This function may change environ for the superior process. | |
1040 | Therefore, the superior process must save and restore the value | |
1041 | of environ around the vfork and the call to this function. | |
1042 | ||
80856e74 | 1043 | SET_PGRP is nonzero if we should put the subprocess into a separate |
177c0ea7 | 1044 | process group. |
e576cab4 JB |
1045 | |
1046 | CURRENT_DIR is an elisp string giving the path of the current | |
1047 | directory the subprocess should have. Since we can't really signal | |
1048 | a decent error from within the child, this should be verified as an | |
1049 | executable directory by the parent. */ | |
80856e74 | 1050 | |
dfcf069d | 1051 | int |
971de7fb | 1052 | child_setup (int in, int out, int err, register char **new_argv, int set_pgrp, Lisp_Object current_dir) |
80856e74 | 1053 | { |
e576cab4 | 1054 | char **env; |
7fcf7f05 | 1055 | char *pwd_var; |
bad95d8f RS |
1056 | #ifdef WINDOWSNT |
1057 | int cpid; | |
4252a4bd | 1058 | HANDLE handles[3]; |
bad95d8f | 1059 | #endif /* WINDOWSNT */ |
e576cab4 | 1060 | |
33abe2d9 | 1061 | int pid = getpid (); |
80856e74 | 1062 | |
68d10241 | 1063 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 | 1064 | { |
31ade731 | 1065 | extern EMACS_INT emacs_priority; |
4f0b9d49 | 1066 | |
68d10241 RS |
1067 | if (emacs_priority < 0) |
1068 | nice (- emacs_priority); | |
4f0b9d49 | 1069 | } |
5b633aeb | 1070 | #endif |
80856e74 JB |
1071 | |
1072 | #ifdef subprocesses | |
1073 | /* Close Emacs's descriptors that this process should not have. */ | |
1074 | close_process_descs (); | |
1075 | #endif | |
c17c4250 EZ |
1076 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1077 | we will lose if we call close_load_descs here. */ | |
1078 | #ifndef DOS_NT | |
4458cebe | 1079 | close_load_descs (); |
c17c4250 | 1080 | #endif |
80856e74 JB |
1081 | |
1082 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1083 | that do not have true vfork or that have true (stack) alloca. | |
caa01fe0 GM |
1084 | If using vfork and C_ALLOCA (when Emacs used to include |
1085 | src/alloca.c) it is safe because that changes the superior's | |
1086 | static variables as if the superior had done alloca and will be | |
1087 | cleaned up in the usual way. */ | |
e576cab4 | 1088 | { |
7fcf7f05 | 1089 | register char *temp; |
e576cab4 | 1090 | register int i; |
77d78be1 | 1091 | |
d5db4077 | 1092 | i = SBYTES (current_dir); |
16425c4a EZ |
1093 | #ifdef MSDOS |
1094 | /* MSDOS must have all environment variables malloc'ed, because | |
1095 | low-level libc functions that launch subsidiary processes rely | |
1096 | on that. */ | |
1097 | pwd_var = (char *) xmalloc (i + 6); | |
1098 | #else | |
7fcf7f05 | 1099 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1100 | #endif |
7fcf7f05 RS |
1101 | temp = pwd_var + 4; |
1102 | bcopy ("PWD=", pwd_var, 4); | |
d5db4077 | 1103 | bcopy (SDATA (current_dir), temp, i); |
bad95d8f | 1104 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1105 | temp[i] = 0; |
1106 | ||
c17c4250 | 1107 | #ifndef DOS_NT |
e576cab4 JB |
1108 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1109 | the callers check the current directory before forking, this | |
1110 | should only return an error if the directory's permissions | |
1111 | are changed between the check and this chdir, but we should | |
1112 | at least check. */ | |
1113 | if (chdir (temp) < 0) | |
20b25e46 | 1114 | _exit (errno); |
f8d23104 | 1115 | #else /* DOS_NT */ |
c17c4250 EZ |
1116 | /* Get past the drive letter, so that d:/ is left alone. */ |
1117 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1118 | { | |
1119 | temp += 2; | |
1120 | i -= 2; | |
1121 | } | |
f8d23104 | 1122 | #endif /* DOS_NT */ |
c17c4250 | 1123 | |
7fcf7f05 | 1124 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1125 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1126 | temp[--i] = 0; |
e576cab4 | 1127 | } |
80856e74 | 1128 | |
5990851d | 1129 | /* Set `env' to a vector of the strings in the environment. */ |
80856e74 JB |
1130 | { |
1131 | register Lisp_Object tem; | |
1132 | register char **new_env; | |
5990851d | 1133 | char **p, **q; |
80856e74 | 1134 | register int new_length; |
d2bb6598 | 1135 | Lisp_Object display = Qnil; |
de87fb59 | 1136 | |
80856e74 | 1137 | new_length = 0; |
f105f403 | 1138 | |
80856e74 | 1139 | for (tem = Vprocess_environment; |
5990851d KL |
1140 | CONSP (tem) && STRINGP (XCAR (tem)); |
1141 | tem = XCDR (tem)) | |
d2bb6598 SM |
1142 | { |
1143 | if (strncmp (SDATA (XCAR (tem)), "DISPLAY", 7) == 0 | |
1144 | && (SDATA (XCAR (tem)) [7] == '\0' | |
1145 | || SDATA (XCAR (tem)) [7] == '=')) | |
1146 | /* DISPLAY is specified in process-environment. */ | |
1147 | display = Qt; | |
1148 | new_length++; | |
1149 | } | |
de87fb59 | 1150 | |
d2bb6598 SM |
1151 | /* If not provided yet, use the frame's DISPLAY. */ |
1152 | if (NILP (display)) | |
1153 | { | |
1154 | Lisp_Object tmp = Fframe_parameter (selected_frame, Qdisplay); | |
1155 | if (!STRINGP (tmp) && CONSP (Vinitial_environment)) | |
1156 | /* If still not found, Look for DISPLAY in Vinitial_environment. */ | |
1157 | tmp = Fgetenv_internal (build_string ("DISPLAY"), | |
1158 | Vinitial_environment); | |
1159 | if (STRINGP (tmp)) | |
1160 | { | |
1161 | display = tmp; | |
1162 | new_length++; | |
1163 | } | |
1164 | } | |
80856e74 | 1165 | |
7fcf7f05 RS |
1166 | /* new_length + 2 to include PWD and terminating 0. */ |
1167 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
7fcf7f05 RS |
1168 | /* If we have a PWD envvar, pass one down, |
1169 | but with corrected value. */ | |
a13f8f50 | 1170 | if (egetenv ("PWD")) |
7fcf7f05 | 1171 | *new_env++ = pwd_var; |
5990851d | 1172 | |
6b8e474c | 1173 | if (STRINGP (display)) |
de87fb59 DN |
1174 | { |
1175 | int vlen = strlen ("DISPLAY=") + strlen (SDATA (display)) + 1; | |
1176 | char *vdata = (char *) alloca (vlen); | |
1177 | strcpy (vdata, "DISPLAY="); | |
1178 | strcat (vdata, SDATA (display)); | |
1179 | new_env = add_env (env, new_env, vdata); | |
1180 | } | |
80856e74 | 1181 | |
5990851d | 1182 | /* Overrides. */ |
80856e74 | 1183 | for (tem = Vprocess_environment; |
70949dac KR |
1184 | CONSP (tem) && STRINGP (XCAR (tem)); |
1185 | tem = XCDR (tem)) | |
5990851d | 1186 | new_env = add_env (env, new_env, SDATA (XCAR (tem))); |
d2bb6598 | 1187 | |
5990851d KL |
1188 | *new_env = 0; |
1189 | ||
1190 | /* Remove variable names without values. */ | |
1191 | p = q = env; | |
1192 | while (*p != 0) | |
cd9565ba | 1193 | { |
5990851d | 1194 | while (*q != 0 && strchr (*q, '=') == NULL) |
1baf6db9 | 1195 | q++; |
5990851d KL |
1196 | *p = *q++; |
1197 | if (*p != 0) | |
1198 | p++; | |
cd9565ba | 1199 | } |
80856e74 | 1200 | } |
de87fb59 DN |
1201 | |
1202 | ||
bad95d8f RS |
1203 | #ifdef WINDOWSNT |
1204 | prepare_standard_handles (in, out, err, handles); | |
d5db4077 | 1205 | set_process_dir (SDATA (current_dir)); |
bad95d8f | 1206 | #else /* not WINDOWSNT */ |
426b37ae JB |
1207 | /* Make sure that in, out, and err are not actually already in |
1208 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1209 | started with its standard in, out, or error closed, as might |
426b37ae | 1210 | happen under X. */ |
f29f9e4a RS |
1211 | { |
1212 | int oin = in, oout = out; | |
1213 | ||
1214 | /* We have to avoid relocating the same descriptor twice! */ | |
1215 | ||
1216 | in = relocate_fd (in, 3); | |
1217 | ||
1218 | if (out == oin) | |
1219 | out = in; | |
1220 | else | |
3e9367e7 | 1221 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1222 | |
1223 | if (err == oin) | |
1224 | err = in; | |
1225 | else if (err == oout) | |
1226 | err = out; | |
1227 | else | |
3e9367e7 | 1228 | err = relocate_fd (err, 3); |
f29f9e4a | 1229 | } |
426b37ae | 1230 | |
c17c4250 | 1231 | #ifndef MSDOS |
68c45bf0 PE |
1232 | emacs_close (0); |
1233 | emacs_close (1); | |
1234 | emacs_close (2); | |
80856e74 JB |
1235 | |
1236 | dup2 (in, 0); | |
1237 | dup2 (out, 1); | |
1238 | dup2 (err, 2); | |
68c45bf0 | 1239 | emacs_close (in); |
ce8f5a9a AS |
1240 | if (out != in) |
1241 | emacs_close (out); | |
1242 | if (err != in && err != out) | |
1243 | emacs_close (err); | |
c17c4250 | 1244 | #endif /* not MSDOS */ |
bad95d8f | 1245 | #endif /* not WINDOWSNT */ |
80856e74 | 1246 | |
58eb6cf0 | 1247 | #if defined(USG) |
fdba8590 | 1248 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1249 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1250 | #endif |
e576cab4 JB |
1251 | #else |
1252 | setpgrp (pid, pid); | |
1253 | #endif /* USG */ | |
a129418f RS |
1254 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1255 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 | 1256 | |
c17c4250 EZ |
1257 | #ifdef MSDOS |
1258 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
a3f0666f | 1259 | xfree (pwd_var); |
c17c4250 EZ |
1260 | if (pid == -1) |
1261 | /* An error occurred while trying to run the subprocess. */ | |
1262 | report_file_error ("Spawning child process", Qnil); | |
1263 | return pid; | |
1264 | #else /* not MSDOS */ | |
bad95d8f RS |
1265 | #ifdef WINDOWSNT |
1266 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1267 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1268 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1269 | if (cpid == -1) |
1270 | /* An error occurred while trying to spawn the process. */ | |
1271 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1272 | return cpid; |
1273 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1274 | /* execvp does not accept an environment arg so the only way |
1275 | to pass this environment is to set environ. Our caller | |
1276 | is responsible for restoring the ambient value of environ. */ | |
1277 | environ = env; | |
1278 | execvp (new_argv[0], new_argv); | |
1279 | ||
68c45bf0 PE |
1280 | emacs_write (1, "Can't exec program: ", 20); |
1281 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1282 | emacs_write (1, "\n", 1); | |
80856e74 | 1283 | _exit (1); |
bad95d8f | 1284 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1285 | #endif /* not MSDOS */ |
80856e74 JB |
1286 | } |
1287 | ||
a3833dfe | 1288 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1289 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1290 | static int |
971de7fb | 1291 | relocate_fd (int fd, int minfd) |
426b37ae | 1292 | { |
a3833dfe | 1293 | if (fd >= minfd) |
426b37ae JB |
1294 | return fd; |
1295 | else | |
1296 | { | |
1297 | int new = dup (fd); | |
1298 | if (new == -1) | |
1299 | { | |
20c018a0 | 1300 | char *message1 = "Error while setting up child: "; |
826c56ac | 1301 | char *errmessage = strerror (errno); |
20c018a0 | 1302 | char *message2 = "\n"; |
68c45bf0 PE |
1303 | emacs_write (2, message1, strlen (message1)); |
1304 | emacs_write (2, errmessage, strlen (errmessage)); | |
1305 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1306 | _exit (1); |
1307 | } | |
1308 | /* Note that we hold the original FD open while we recurse, | |
1309 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1310 | new = relocate_fd (new, minfd); |
68c45bf0 | 1311 | emacs_close (fd); |
426b37ae JB |
1312 | return new; |
1313 | } | |
1314 | } | |
1315 | ||
012c6fcb | 1316 | static int |
971de7fb | 1317 | getenv_internal_1 (char *var, int varlen, char **value, int *valuelen, Lisp_Object env) |
012c6fcb | 1318 | { |
db699fc6 | 1319 | for (; CONSP (env); env = XCDR (env)) |
012c6fcb | 1320 | { |
db699fc6 | 1321 | Lisp_Object entry = XCAR (env); |
d50d3dc8 | 1322 | if (STRINGP (entry) |
db699fc6 | 1323 | && SBYTES (entry) >= varlen |
bad95d8f RS |
1324 | #ifdef WINDOWSNT |
1325 | /* NT environment variables are case insensitive. */ | |
d5db4077 | 1326 | && ! strnicmp (SDATA (entry), var, varlen) |
bad95d8f | 1327 | #else /* not WINDOWSNT */ |
d5db4077 | 1328 | && ! bcmp (SDATA (entry), var, varlen) |
bad95d8f | 1329 | #endif /* not WINDOWSNT */ |
a9971c6d | 1330 | ) |
012c6fcb | 1331 | { |
db699fc6 SM |
1332 | if (SBYTES (entry) > varlen && SREF (entry, varlen) == '=') |
1333 | { | |
1334 | *value = (char *) SDATA (entry) + (varlen + 1); | |
1335 | *valuelen = SBYTES (entry) - (varlen + 1); | |
1336 | return 1; | |
1337 | } | |
1338 | else if (SBYTES (entry) == varlen) | |
1339 | { | |
1340 | /* Lone variable names in Vprocess_environment mean that | |
1341 | variable should be removed from the environment. */ | |
1342 | *value = NULL; | |
1343 | return 1; | |
1344 | } | |
1345 | } | |
1346 | } | |
1347 | return 0; | |
1348 | } | |
1349 | ||
012c6fcb | 1350 | static int |
971de7fb | 1351 | getenv_internal (char *var, int varlen, char **value, int *valuelen, Lisp_Object frame) |
012c6fcb | 1352 | { |
d2bb6598 SM |
1353 | /* Try to find VAR in Vprocess_environment first. */ |
1354 | if (getenv_internal_1 (var, varlen, value, valuelen, | |
1355 | Vprocess_environment)) | |
1356 | return *value ? 1 : 0; | |
f105f403 | 1357 | |
d2bb6598 | 1358 | /* For DISPLAY try to get the values from the frame or the initial env. */ |
de87fb59 | 1359 | if (strcmp (var, "DISPLAY") == 0) |
d2bb6598 SM |
1360 | { |
1361 | Lisp_Object display | |
1362 | = Fframe_parameter (NILP (frame) ? selected_frame : frame, Qdisplay); | |
1363 | if (STRINGP (display)) | |
1364 | { | |
de87fb59 DN |
1365 | *value = (char *) SDATA (display); |
1366 | *valuelen = SBYTES (display); | |
012c6fcb JA |
1367 | return 1; |
1368 | } | |
d2bb6598 SM |
1369 | /* If still not found, Look for DISPLAY in Vinitial_environment. */ |
1370 | if (getenv_internal_1 (var, varlen, value, valuelen, | |
1371 | Vinitial_environment)) | |
1372 | return *value ? 1 : 0; | |
012c6fcb JA |
1373 | } |
1374 | ||
1375 | return 0; | |
1376 | } | |
1377 | ||
f105f403 | 1378 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 2, 0, |
5990851d KL |
1379 | doc: /* Get the value of environment variable VARIABLE. |
1380 | VARIABLE should be a string. Value is nil if VARIABLE is undefined in | |
1381 | the environment. Otherwise, value is a string. | |
f105f403 | 1382 | |
acf20901 | 1383 | This function searches `process-environment' for VARIABLE. |
5990851d | 1384 | |
db699fc6 | 1385 | If optional parameter ENV is a list, then search this list instead of |
acf20901 JB |
1386 | `process-environment', and return t when encountering a negative entry |
1387 | \(an entry for a variable with no value). */) | |
db699fc6 SM |
1388 | (variable, env) |
1389 | Lisp_Object variable, env; | |
012c6fcb JA |
1390 | { |
1391 | char *value; | |
1392 | int valuelen; | |
1393 | ||
5990851d | 1394 | CHECK_STRING (variable); |
db699fc6 SM |
1395 | if (CONSP (env)) |
1396 | { | |
1397 | if (getenv_internal_1 (SDATA (variable), SBYTES (variable), | |
1398 | &value, &valuelen, env)) | |
1399 | return value ? make_string (value, valuelen) : Qt; | |
1400 | else | |
1401 | return Qnil; | |
1402 | } | |
1403 | else if (getenv_internal (SDATA (variable), SBYTES (variable), | |
d2bb6598 | 1404 | &value, &valuelen, env)) |
012c6fcb JA |
1405 | return make_string (value, valuelen); |
1406 | else | |
1407 | return Qnil; | |
1408 | } | |
1409 | ||
5990851d KL |
1410 | /* A version of getenv that consults the Lisp environment lists, |
1411 | easily callable from C. */ | |
012c6fcb | 1412 | char * |
971de7fb | 1413 | egetenv (char *var) |
012c6fcb JA |
1414 | { |
1415 | char *value; | |
1416 | int valuelen; | |
1417 | ||
f105f403 | 1418 | if (getenv_internal (var, strlen (var), &value, &valuelen, Qnil)) |
012c6fcb JA |
1419 | return value; |
1420 | else | |
1421 | return 0; | |
1422 | } | |
1423 | ||
80856e74 | 1424 | \f |
8de15d69 | 1425 | /* This is run before init_cmdargs. */ |
177c0ea7 | 1426 | |
dfcf069d | 1427 | void |
971de7fb | 1428 | init_callproc_1 (void) |
8de15d69 RS |
1429 | { |
1430 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1431 | char *doc_dir = egetenv ("EMACSDOC"); |
1432 | ||
8de15d69 | 1433 | Vdata_directory |
177c0ea7 | 1434 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1435 | : PATH_DATA)); |
35a2f4b8 KH |
1436 | Vdoc_directory |
1437 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1438 | : PATH_DOC)); | |
9453ea7b | 1439 | |
e576cab4 | 1440 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1441 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1442 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1443 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1444 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1445 | } |
1446 | ||
e17f7533 | 1447 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1448 | |
dfcf069d | 1449 | void |
971de7fb | 1450 | init_callproc (void) |
8de15d69 RS |
1451 | { |
1452 | char *data_dir = egetenv ("EMACSDATA"); | |
177c0ea7 | 1453 | |
8de15d69 RS |
1454 | register char * sh; |
1455 | Lisp_Object tempdir; | |
1456 | ||
9cc4fad5 | 1457 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1458 | { |
05630743 RS |
1459 | /* Add to the path the lib-src subdir of the installation dir. */ |
1460 | Lisp_Object tem; | |
1461 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1462 | Vinstallation_directory); | |
bad95d8f | 1463 | #ifndef DOS_NT |
1a6640ec | 1464 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc | 1465 | if (NILP (Fmember (tem, Vexec_path))) |
70ec1377 RS |
1466 | { |
1467 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); | |
1468 | Vexec_path = Fcons (tem, Vexec_path); | |
1469 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
1470 | } | |
177c0ea7 | 1471 | |
0fa248bc | 1472 | Vexec_directory = Ffile_name_as_directory (tem); |
bad95d8f | 1473 | #endif /* not DOS_NT */ |
8de15d69 | 1474 | |
e17f7533 RS |
1475 | /* Maybe use ../etc as well as ../lib-src. */ |
1476 | if (data_dir == 0) | |
1477 | { | |
1478 | tem = Fexpand_file_name (build_string ("etc"), | |
1479 | Vinstallation_directory); | |
1480 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1481 | } |
1482 | } | |
7e933683 RS |
1483 | |
1484 | /* Look for the files that should be in etc. We don't use | |
1485 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1486 | near the executable, and they are never in the build |
7e933683 RS |
1487 | directory when that's different from the source directory. |
1488 | ||
1489 | Instead, if these files are not in the nominal place, we try the | |
1490 | source directory. */ | |
1491 | if (data_dir == 0) | |
1492 | { | |
70ec1377 | 1493 | Lisp_Object tem, tem1, srcdir; |
7e933683 | 1494 | |
70ec1377 RS |
1495 | srcdir = Fexpand_file_name (build_string ("../src/"), |
1496 | build_string (PATH_DUMPLOADSEARCH)); | |
7e933683 RS |
1497 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); |
1498 | tem1 = Ffile_exists_p (tem); | |
70ec1377 | 1499 | if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1)) |
7e933683 | 1500 | { |
70ec1377 | 1501 | Lisp_Object newdir; |
7e933683 RS |
1502 | newdir = Fexpand_file_name (build_string ("../etc/"), |
1503 | build_string (PATH_DUMPLOADSEARCH)); | |
1504 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1505 | tem1 = Ffile_exists_p (tem); | |
1506 | if (!NILP (tem1)) | |
1507 | Vdata_directory = newdir; | |
1508 | } | |
1509 | } | |
80856e74 | 1510 | |
d883eb62 RS |
1511 | #ifndef CANNOT_DUMP |
1512 | if (initialized) | |
1513 | #endif | |
1514 | { | |
1515 | tempdir = Fdirectory_file_name (Vexec_directory); | |
d5db4077 | 1516 | if (access (SDATA (tempdir), 0) < 0) |
d883eb62 RS |
1517 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", |
1518 | Vexec_directory); | |
1519 | } | |
80856e74 | 1520 | |
e576cab4 | 1521 | tempdir = Fdirectory_file_name (Vdata_directory); |
d5db4077 | 1522 | if (access (SDATA (tempdir), 0) < 0) |
76d5c6cf RS |
1523 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1524 | Vdata_directory); | |
e576cab4 | 1525 | |
e576cab4 | 1526 | sh = (char *) getenv ("SHELL"); |
80856e74 | 1527 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
8abd035b | 1528 | |
40b49d4b JB |
1529 | #ifdef DOS_NT |
1530 | Vshared_game_score_directory = Qnil; | |
1531 | #else | |
63789758 RS |
1532 | Vshared_game_score_directory = build_string (PATH_GAME); |
1533 | if (NILP (Ffile_directory_p (Vshared_game_score_directory))) | |
1534 | Vshared_game_score_directory = Qnil; | |
40b49d4b | 1535 | #endif |
9fefd2ba JB |
1536 | } |
1537 | ||
dfcf069d | 1538 | void |
971de7fb | 1539 | set_initial_environment (void) |
9fefd2ba JB |
1540 | { |
1541 | register char **envp; | |
80856e74 JB |
1542 | #ifndef CANNOT_DUMP |
1543 | if (initialized) | |
a13f8f50 | 1544 | { |
edfda783 AR |
1545 | #else |
1546 | { | |
1547 | Vprocess_environment = Qnil; | |
1548 | #endif | |
a13f8f50 | 1549 | for (envp = environ; *envp; envp++) |
de87fb59 DN |
1550 | Vprocess_environment = Fcons (build_string (*envp), |
1551 | Vprocess_environment); | |
3c33c79a SM |
1552 | /* Ideally, the `copy' shouldn't be necessary, but it seems it's frequent |
1553 | to use `delete' and friends on process-environment. */ | |
1554 | Vinitial_environment = Fcopy_sequence (Vprocess_environment); | |
a13f8f50 | 1555 | } |
80856e74 JB |
1556 | } |
1557 | ||
dfcf069d | 1558 | void |
971de7fb | 1559 | syms_of_callproc (void) |
80856e74 | 1560 | { |
bad95d8f | 1561 | #ifdef DOS_NT |
093650fe RS |
1562 | Qbuffer_file_type = intern ("buffer-file-type"); |
1563 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1564 | #endif /* DOS_NT */ |
7e6c2178 | 1565 | |
f92d51d8 CY |
1566 | #ifndef DOS_NT |
1567 | Vtemp_file_name_pattern = build_string ("emacsXXXXXX"); | |
1568 | #elif defined (WINDOWSNT) | |
1569 | Vtemp_file_name_pattern = build_string ("emXXXXXX"); | |
1570 | #else | |
1571 | Vtemp_file_name_pattern = build_string ("detmp.XXX"); | |
1572 | #endif | |
1573 | staticpro (&Vtemp_file_name_pattern); | |
1574 | ||
80856e74 | 1575 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
fdb82f93 | 1576 | doc: /* *File name to load inferior shells from. |
b20b29be EZ |
1577 | Initialized from the SHELL environment variable, or to a system-dependent |
1578 | default if SHELL is not set. */); | |
80856e74 JB |
1579 | |
1580 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
fdb82f93 PJ |
1581 | doc: /* *List of directories to search programs to run in subprocesses. |
1582 | Each element is a string (directory name) or nil (try default directory). */); | |
80856e74 | 1583 | |
b81a1b72 | 1584 | DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, |
fdb82f93 PJ |
1585 | doc: /* *List of suffixes to try to find executable file names. |
1586 | Each element is a string. */); | |
33d5af99 | 1587 | Vexec_suffixes = Qnil; |
b81a1b72 | 1588 | |
80856e74 | 1589 | DEFVAR_LISP ("exec-directory", &Vexec_directory, |
fdb82f93 PJ |
1590 | doc: /* Directory for executables for Emacs to invoke. |
1591 | More generally, this includes any architecture-dependent files | |
1592 | that are built and installed from the Emacs distribution. */); | |
e576cab4 JB |
1593 | |
1594 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
fdb82f93 PJ |
1595 | doc: /* Directory of machine-independent files that come with GNU Emacs. |
1596 | These are files intended for Emacs to use while it runs. */); | |
80856e74 | 1597 | |
35a2f4b8 | 1598 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
fdb82f93 | 1599 | doc: /* Directory containing the DOC file that comes with GNU Emacs. |
ebf24b59 | 1600 | This is usually the same as `data-directory'. */); |
35a2f4b8 | 1601 | |
ed61592a | 1602 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
fdb82f93 PJ |
1603 | doc: /* For internal use by the build procedure only. |
1604 | This is the name of the directory in which the build procedure installed | |
ebf24b59 | 1605 | Emacs's info files; the default value for `Info-default-directory-list' |
fdb82f93 | 1606 | includes this. */); |
ed61592a JB |
1607 | Vconfigure_info_directory = build_string (PATH_INFO); |
1608 | ||
1e7ce61b | 1609 | DEFVAR_LISP ("shared-game-score-directory", &Vshared_game_score_directory, |
b065672a CW |
1610 | doc: /* Directory of score files for games which come with GNU Emacs. |
1611 | If this variable is nil, then Emacs is unable to use a shared directory. */); | |
40b49d4b JB |
1612 | #ifdef DOS_NT |
1613 | Vshared_game_score_directory = Qnil; | |
1614 | #else | |
63789758 | 1615 | Vshared_game_score_directory = build_string (PATH_GAME); |
40b49d4b | 1616 | #endif |
b065672a | 1617 | |
6b8e474c SM |
1618 | DEFVAR_LISP ("initial-environment", &Vinitial_environment, |
1619 | doc: /* List of environment variables inherited from the parent process. | |
1620 | Each element should be a string of the form ENVVARNAME=VALUE. | |
1621 | The elements must normally be decoded (using `locale-coding-system') for use. */); | |
1622 | Vinitial_environment = Qnil; | |
1623 | ||
80856e74 | 1624 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
5990851d | 1625 | doc: /* List of overridden environment variables for subprocesses to inherit. |
fdb82f93 | 1626 | Each element should be a string of the form ENVVARNAME=VALUE. |
5990851d | 1627 | |
a13f8f50 KL |
1628 | Entries in this list take precedence to those in the frame-local |
1629 | environments. Therefore, let-binding `process-environment' is an easy | |
1630 | way to temporarily change the value of an environment variable, | |
1631 | irrespective of where it comes from. To use `process-environment' to | |
1632 | remove an environment variable, include only its name in the list, | |
1633 | without "=VALUE". | |
5990851d KL |
1634 | |
1635 | This variable is set to nil when Emacs starts. | |
1636 | ||
fdb82f93 PJ |
1637 | If multiple entries define the same variable, the first one always |
1638 | takes precedence. | |
5990851d | 1639 | |
776a24a1 | 1640 | Non-ASCII characters are encoded according to the initial value of |
5990851d KL |
1641 | `locale-coding-system', i.e. the elements must normally be decoded for |
1642 | use. | |
1643 | ||
776a24a1 | 1644 | See `setenv' and `getenv'. */); |
86f5ca04 | 1645 | Vprocess_environment = Qnil; |
80856e74 | 1646 | |
80856e74 | 1647 | defsubr (&Scall_process); |
83fa009c | 1648 | defsubr (&Sgetenv_internal); |
e576cab4 | 1649 | defsubr (&Scall_process_region); |
80856e74 | 1650 | } |
6b61353c KH |
1651 | |
1652 | /* arch-tag: 769b8045-1df7-4d2b-8968-e3fb49017f95 | |
1653 | (do not change this comment) */ |