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 | ||
80856e74 JB |
105 | Lisp_Object Vshell_file_name; |
106 | ||
6b8e474c | 107 | Lisp_Object Vprocess_environment, Vinitial_environment; |
80856e74 | 108 | |
bad95d8f | 109 | #ifdef DOS_NT |
093650fe | 110 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 111 | #endif /* DOS_NT */ |
093650fe | 112 | |
e0f24100 | 113 | /* True if we are about to fork off a synchronous process or if we |
80856e74 JB |
114 | are waiting for it. */ |
115 | int synch_process_alive; | |
116 | ||
117 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
42ca4633 | 118 | const char *synch_process_death; |
80856e74 | 119 | |
6b61353c KH |
120 | /* Nonzero => this is the signal number that terminated the subprocess. */ |
121 | int synch_process_termsig; | |
122 | ||
80856e74 JB |
123 | /* If synch_process_death is zero, |
124 | this is exit code of synchronous subprocess. */ | |
125 | int synch_process_retcode; | |
f105f403 | 126 | |
80856e74 | 127 | \f |
37d54121 RS |
128 | /* Clean up when exiting Fcall_process. |
129 | On MSDOS, delete the temporary file on any kind of termination. | |
130 | On Unix, kill the process and any children on termination by signal. */ | |
131 | ||
132 | /* Nonzero if this is termination due to exit. */ | |
133 | static int call_process_exited; | |
134 | ||
d2bb6598 SM |
135 | EXFUN (Fgetenv_internal, 2); |
136 | ||
d177f194 | 137 | static Lisp_Object |
971de7fb | 138 | call_process_kill (Lisp_Object fdpid) |
d177f194 | 139 | { |
68c45bf0 | 140 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
141 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
142 | synch_process_alive = 0; | |
143 | return Qnil; | |
144 | } | |
145 | ||
80856e74 | 146 | Lisp_Object |
971de7fb | 147 | call_process_cleanup (Lisp_Object arg) |
80856e74 | 148 | { |
ad3aaf33 AS |
149 | Lisp_Object fdpid = Fcdr (arg); |
150 | #if defined (MSDOS) | |
151 | Lisp_Object file; | |
152 | #else | |
153 | int pid; | |
154 | #endif | |
155 | ||
156 | Fset_buffer (Fcar (arg)); | |
157 | ||
e39a993c | 158 | #if defined (MSDOS) |
7e6c2178 | 159 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 | 160 | file = Fcdr (fdpid); |
68c45bf0 | 161 | emacs_close (XFASTINT (Fcar (fdpid))); |
d5db4077 KR |
162 | if (strcmp (SDATA (file), NULL_DEVICE) != 0) |
163 | unlink (SDATA (file)); | |
e39a993c | 164 | #else /* not MSDOS */ |
ad3aaf33 | 165 | pid = XFASTINT (Fcdr (fdpid)); |
d177f194 | 166 | |
37d54121 | 167 | if (call_process_exited) |
6b6e798b | 168 | { |
68c45bf0 | 169 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
170 | return Qnil; |
171 | } | |
37d54121 | 172 | |
d177f194 JB |
173 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
174 | { | |
aed13378 | 175 | int count = SPECPDL_INDEX (); |
d177f194 JB |
176 | record_unwind_protect (call_process_kill, fdpid); |
177 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
178 | immediate_quit = 1; | |
179 | QUIT; | |
180 | wait_for_termination (pid); | |
181 | immediate_quit = 0; | |
182 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
183 | message1 ("Waiting for process to die...done"); | |
184 | } | |
80856e74 | 185 | synch_process_alive = 0; |
68c45bf0 | 186 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 187 | #endif /* not MSDOS */ |
80856e74 JB |
188 | return Qnil; |
189 | } | |
190 | ||
191 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
fdb82f93 PJ |
192 | doc: /* Call PROGRAM synchronously in separate process. |
193 | The remaining arguments are optional. | |
194 | The program's input comes from file INFILE (nil means `/dev/null'). | |
195 | Insert output in BUFFER before point; t means current buffer; | |
196 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
197 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
198 | REAL-BUFFER says what to do with standard output, as above, | |
199 | while STDERR-FILE says what to do with standard error in the child. | |
200 | STDERR-FILE may be nil (discard standard error output), | |
201 | t (mix it with ordinary output), or a file name string. | |
202 | ||
203 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
204 | Remaining arguments are strings passed as command arguments to PROGRAM. | |
205 | ||
a4feb144 RS |
206 | If executable PROGRAM can't be found as an executable, `call-process' |
207 | signals a Lisp error. `call-process' reports errors in execution of | |
208 | the program only through its return and output. | |
209 | ||
fdb82f93 PJ |
210 | If BUFFER is 0, `call-process' returns immediately with value nil. |
211 | Otherwise it waits for PROGRAM to terminate | |
212 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
213 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
214 | ||
215 | usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */) | |
5842a27b | 216 | (int nargs, register Lisp_Object *args) |
80856e74 | 217 | { |
0aa2630f KS |
218 | Lisp_Object infile, buffer, current_dir, path; |
219 | int display_p; | |
80856e74 JB |
220 | int fd[2]; |
221 | int filefd; | |
222 | register int pid; | |
4da256b1 KS |
223 | #define CALLPROC_BUFFER_SIZE_MIN (16 * 1024) |
224 | #define CALLPROC_BUFFER_SIZE_MAX (4 * CALLPROC_BUFFER_SIZE_MIN) | |
225 | char buf[CALLPROC_BUFFER_SIZE_MAX]; | |
226 | int bufsize = CALLPROC_BUFFER_SIZE_MIN; | |
aed13378 | 227 | int count = SPECPDL_INDEX (); |
2d607244 | 228 | |
1aa83b22 | 229 | register const unsigned char **new_argv; |
39eaa782 RS |
230 | /* File to use for stderr in the child. |
231 | t means use same as standard output. */ | |
232 | Lisp_Object error_file; | |
7e6c2178 RS |
233 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
234 | char *outf, *tempfile; | |
235 | int outfilefd; | |
80856e74 | 236 | #endif |
32d08644 KH |
237 | struct coding_system process_coding; /* coding-system of process output */ |
238 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
239 | /* Set to the return value of Ffind_operation_coding_system. */ |
240 | Lisp_Object coding_systems; | |
241 | ||
242 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
243 | coding_systems = Qt; | |
32d08644 | 244 | |
b7826503 | 245 | CHECK_STRING (args[0]); |
80856e74 | 246 | |
39eaa782 RS |
247 | error_file = Qt; |
248 | ||
7e6c2178 RS |
249 | #ifndef subprocesses |
250 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
177c0ea7 | 251 | if (nargs >= 3 |
09ffb8b5 | 252 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
253 | error ("Operating system cannot handle asynchronous subprocesses"); |
254 | #endif /* subprocesses */ | |
255 | ||
09494912 | 256 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
257 | { |
258 | Lisp_Object val, *args2; | |
32d08644 KH |
259 | int i; |
260 | ||
261 | /* If arguments are supplied, we may have to encode them. */ | |
262 | if (nargs >= 5) | |
263 | { | |
30d57b8e | 264 | int must_encode = 0; |
6e50da0a | 265 | Lisp_Object coding_attrs; |
30d57b8e | 266 | |
e7c1c20e | 267 | for (i = 4; i < nargs; i++) |
b7826503 | 268 | CHECK_STRING (args[i]); |
e7c1c20e | 269 | |
a2286b5c | 270 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
271 | if (STRING_MULTIBYTE (args[i])) |
272 | must_encode = 1; | |
273 | ||
beacaab3 KH |
274 | if (!NILP (Vcoding_system_for_write)) |
275 | val = Vcoding_system_for_write; | |
30d57b8e | 276 | else if (! must_encode) |
beacaab3 KH |
277 | val = Qnil; |
278 | else | |
32d08644 KH |
279 | { |
280 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
281 | args2[0] = Qcall_process; | |
282 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 283 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 284 | if (CONSP (coding_systems)) |
70949dac | 285 | val = XCDR (coding_systems); |
776b95cb | 286 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 287 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
288 | else |
289 | val = Qnil; | |
32d08644 | 290 | } |
b4413d9f | 291 | val = coding_inherit_eol_type (val, Qnil); |
32d08644 | 292 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); |
6e50da0a KH |
293 | coding_attrs = CODING_ID_ATTRS (argument_coding.id); |
294 | if (NILP (CODING_ATTR_ASCII_COMPAT (coding_attrs))) | |
295 | { | |
296 | /* We should not use an ASCII incompatible coding system. */ | |
297 | val = raw_text_coding_system (val); | |
298 | setup_coding_system (val, &argument_coding); | |
299 | } | |
32d08644 | 300 | } |
32d08644 KH |
301 | } |
302 | ||
e576cab4 JB |
303 | if (nargs >= 2 && ! NILP (args[1])) |
304 | { | |
305 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
b7826503 | 306 | CHECK_STRING (infile); |
e576cab4 | 307 | } |
80856e74 | 308 | else |
5437e9f9 | 309 | infile = build_string (NULL_DEVICE); |
80856e74 | 310 | |
e576cab4 JB |
311 | if (nargs >= 3) |
312 | { | |
39eaa782 RS |
313 | buffer = args[2]; |
314 | ||
315 | /* If BUFFER is a list, its meaning is | |
316 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
317 | if (CONSP (buffer)) | |
318 | { | |
70949dac | 319 | if (CONSP (XCDR (buffer))) |
45be8a1e | 320 | { |
a9d4f28a | 321 | Lisp_Object stderr_file; |
70949dac | 322 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
323 | |
324 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
325 | error_file = stderr_file; | |
326 | else | |
327 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
328 | } | |
329 | ||
70949dac | 330 | buffer = XCAR (buffer); |
39eaa782 | 331 | } |
044512ed | 332 | |
39eaa782 RS |
333 | if (!(EQ (buffer, Qnil) |
334 | || EQ (buffer, Qt) | |
3ffde7d6 | 335 | || INTEGERP (buffer))) |
e576cab4 | 336 | { |
39eaa782 RS |
337 | Lisp_Object spec_buffer; |
338 | spec_buffer = buffer; | |
50fe359b | 339 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
340 | /* Mention the buffer name for a better error message. */ |
341 | if (NILP (buffer)) | |
b7826503 PJ |
342 | CHECK_BUFFER (spec_buffer); |
343 | CHECK_BUFFER (buffer); | |
e576cab4 JB |
344 | } |
345 | } | |
177c0ea7 | 346 | else |
e576cab4 | 347 | buffer = Qnil; |
80856e74 | 348 | |
58616e67 JB |
349 | /* Make sure that the child will be able to chdir to the current |
350 | buffer's current directory, or its unhandled equivalent. We | |
351 | can't just have the child check for an error when it does the | |
352 | chdir, since it's in a vfork. | |
353 | ||
354 | We have to GCPRO around this because Fexpand_file_name, | |
355 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
356 | might call a file name handling function. The argument list is | |
357 | protected by the caller, so all we really have to worry about is | |
358 | buffer. */ | |
359 | { | |
34b87689 | 360 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
58616e67 JB |
361 | |
362 | current_dir = current_buffer->directory; | |
363 | ||
34b87689 | 364 | GCPRO4 (infile, buffer, current_dir, error_file); |
58616e67 | 365 | |
ca319910 SM |
366 | current_dir = Funhandled_file_name_directory (current_dir); |
367 | if (NILP (current_dir)) | |
368 | /* If the file name handler says that current_dir is unreachable, use | |
369 | a sensible default. */ | |
370 | current_dir = build_string ("~/"); | |
371 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
db8454b0 CY |
372 | current_dir = Ffile_name_as_directory (current_dir); |
373 | ||
58616e67 JB |
374 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
375 | report_file_error ("Setting current directory", | |
376 | Fcons (current_buffer->directory, Qnil)); | |
377 | ||
34b87689 KH |
378 | if (STRING_MULTIBYTE (infile)) |
379 | infile = ENCODE_FILE (infile); | |
380 | if (STRING_MULTIBYTE (current_dir)) | |
381 | current_dir = ENCODE_FILE (current_dir); | |
382 | if (STRINGP (error_file) && STRING_MULTIBYTE (error_file)) | |
383 | error_file = ENCODE_FILE (error_file); | |
58616e67 JB |
384 | UNGCPRO; |
385 | } | |
386 | ||
0aa2630f | 387 | display_p = INTERACTIVE && nargs >= 4 && !NILP (args[3]); |
80856e74 | 388 | |
d5db4077 | 389 | filefd = emacs_open (SDATA (infile), O_RDONLY, 0); |
80856e74 JB |
390 | if (filefd < 0) |
391 | { | |
34b87689 | 392 | infile = DECODE_FILE (infile); |
e576cab4 | 393 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
394 | } |
395 | /* Search for program; barf if not found. */ | |
c52b0b34 | 396 | { |
ad3aaf33 | 397 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
c52b0b34 | 398 | |
ad3aaf33 | 399 | GCPRO4 (infile, buffer, current_dir, error_file); |
5c150961 | 400 | openp (Vexec_path, args[0], Vexec_suffixes, &path, make_number (X_OK)); |
c52b0b34 KH |
401 | UNGCPRO; |
402 | } | |
012c6fcb | 403 | if (NILP (path)) |
80856e74 | 404 | { |
68c45bf0 | 405 | emacs_close (filefd); |
80856e74 JB |
406 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
407 | } | |
8ee8f447 RS |
408 | |
409 | /* If program file name starts with /: for quoting a magic name, | |
410 | discard that. */ | |
411 | if (SBYTES (path) > 2 && SREF (path, 0) == '/' | |
412 | && SREF (path, 1) == ':') | |
413 | path = Fsubstring (path, make_number (2), Qnil); | |
414 | ||
1aa83b22 AS |
415 | new_argv = (const unsigned char **) |
416 | alloca (max (2, nargs - 2) * sizeof (char *)); | |
c364e618 KH |
417 | if (nargs > 4) |
418 | { | |
419 | register int i; | |
ad3aaf33 | 420 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
c364e618 | 421 | |
ad3aaf33 | 422 | GCPRO5 (infile, buffer, current_dir, path, error_file); |
c5bfa12b KH |
423 | argument_coding.dst_multibyte = 0; |
424 | for (i = 4; i < nargs; i++) | |
c364e618 | 425 | { |
c5bfa12b KH |
426 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
427 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
91183bfd KH |
428 | /* We must encode this argument. */ |
429 | args[i] = encode_coding_string (&argument_coding, args[i], 1); | |
c364e618 | 430 | } |
c5bfa12b | 431 | UNGCPRO; |
1aa83b22 AS |
432 | for (i = 4; i < nargs; i++) |
433 | new_argv[i - 3] = SDATA (args[i]); | |
434 | new_argv[i - 3] = 0; | |
c364e618 | 435 | } |
db54baaa KH |
436 | else |
437 | new_argv[1] = 0; | |
1aa83b22 | 438 | new_argv[0] = SDATA (path); |
80856e74 | 439 | |
7e6c2178 | 440 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 441 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
442 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
443 | else | |
444 | { | |
445 | tempfile = alloca (20); | |
446 | *tempfile = '\0'; | |
447 | } | |
448 | dostounix_filename (tempfile); | |
177c0ea7 | 449 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') |
7e6c2178 RS |
450 | strcat (tempfile, "/"); |
451 | strcat (tempfile, "detmp.XXX"); | |
452 | mktemp (tempfile); | |
453 | ||
454 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
455 | if (outfilefd < 0) | |
456 | { | |
68c45bf0 | 457 | emacs_close (filefd); |
6f89d28a MB |
458 | report_file_error ("Opening process output file", |
459 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 460 | } |
6f89d28a | 461 | fd[0] = filefd; |
2610078a | 462 | fd[1] = outfilefd; |
6f89d28a | 463 | #endif /* MSDOS */ |
7e6c2178 | 464 | |
d50d3dc8 | 465 | if (INTEGERP (buffer)) |
68c45bf0 | 466 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
467 | else |
468 | { | |
7e6c2178 | 469 | #ifndef MSDOS |
db92b288 GM |
470 | errno = 0; |
471 | if (pipe (fd) == -1) | |
472 | { | |
473 | emacs_close (filefd); | |
474 | report_file_error ("Creating process pipe", Qnil); | |
475 | } | |
80856e74 JB |
476 | #endif |
477 | } | |
478 | ||
479 | { | |
480 | /* child_setup must clobber environ in systems with true vfork. | |
481 | Protect it from permanent change. */ | |
482 | register char **save_environ = environ; | |
483 | register int fd1 = fd[1]; | |
39eaa782 | 484 | int fd_error = fd1; |
80856e74 JB |
485 | |
486 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 487 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
488 | #endif |
489 | ||
490 | /* Record that we're about to create a synchronous process. */ | |
491 | synch_process_alive = 1; | |
492 | ||
5c03767e RS |
493 | /* These vars record information from process termination. |
494 | Clear them now before process can possibly terminate, | |
495 | to avoid timing error if process terminates soon. */ | |
496 | synch_process_death = 0; | |
497 | synch_process_retcode = 0; | |
6b61353c | 498 | synch_process_termsig = 0; |
5c03767e | 499 | |
39eaa782 | 500 | if (NILP (error_file)) |
68c45bf0 | 501 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
502 | else if (STRINGP (error_file)) |
503 | { | |
504 | #ifdef DOS_NT | |
d5db4077 | 505 | fd_error = emacs_open (SDATA (error_file), |
68c45bf0 PE |
506 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
507 | S_IREAD | S_IWRITE); | |
39eaa782 | 508 | #else /* not DOS_NT */ |
d5db4077 | 509 | fd_error = creat (SDATA (error_file), 0666); |
39eaa782 RS |
510 | #endif /* not DOS_NT */ |
511 | } | |
512 | ||
513 | if (fd_error < 0) | |
514 | { | |
68c45bf0 | 515 | emacs_close (filefd); |
6f89d28a | 516 | if (fd[0] != filefd) |
68c45bf0 | 517 | emacs_close (fd[0]); |
39eaa782 | 518 | if (fd1 >= 0) |
68c45bf0 | 519 | emacs_close (fd1); |
6f89d28a MB |
520 | #ifdef MSDOS |
521 | unlink (tempfile); | |
522 | #endif | |
34b87689 KH |
523 | if (NILP (error_file)) |
524 | error_file = build_string (NULL_DEVICE); | |
525 | else if (STRINGP (error_file)) | |
526 | error_file = DECODE_FILE (error_file); | |
527 | report_file_error ("Cannot redirect stderr", Fcons (error_file, Qnil)); | |
39eaa782 | 528 | } |
89e1ec1d | 529 | |
2610078a | 530 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 531 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
532 | exit status, not its PID, so we assign it to `synch_process_retcode' |
533 | below. */ | |
c17c4250 EZ |
534 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
535 | 0, current_dir); | |
39eaa782 | 536 | |
2610078a KH |
537 | /* Record that the synchronous process exited and note its |
538 | termination status. */ | |
539 | synch_process_alive = 0; | |
540 | synch_process_retcode = pid; | |
541 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 542 | { |
ca9c0567 | 543 | synchronize_system_messages_locale (); |
68c45bf0 PE |
544 | synch_process_death = strerror (errno); |
545 | } | |
2610078a | 546 | |
68c45bf0 | 547 | emacs_close (outfilefd); |
2610078a | 548 | if (fd_error != outfilefd) |
68c45bf0 | 549 | emacs_close (fd_error); |
2610078a | 550 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
551 | /* Since CRLF is converted to LF within `decode_coding', we can |
552 | always open a file with binary mode. */ | |
68c45bf0 | 553 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
554 | if (fd[0] < 0) |
555 | { | |
556 | unlink (tempfile); | |
68c45bf0 | 557 | emacs_close (filefd); |
2610078a KH |
558 | report_file_error ("Cannot re-open temporary file", Qnil); |
559 | } | |
560 | #else /* not MSDOS */ | |
bad95d8f | 561 | #ifdef WINDOWSNT |
2d607244 RS |
562 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
563 | 0, current_dir); | |
bad95d8f | 564 | #else /* not WINDOWSNT */ |
aba637ec KS |
565 | BLOCK_INPUT; |
566 | ||
80856e74 JB |
567 | pid = vfork (); |
568 | ||
569 | if (pid == 0) | |
570 | { | |
571 | if (fd[0] >= 0) | |
68c45bf0 | 572 | emacs_close (fd[0]); |
1e7963c7 RS |
573 | #ifdef HAVE_SETSID |
574 | setsid (); | |
575 | #endif | |
58eb6cf0 | 576 | #if defined (USG) |
80856e74 JB |
577 | setpgrp (); |
578 | #else | |
579 | setpgrp (pid, pid); | |
580 | #endif /* USG */ | |
2d607244 RS |
581 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
582 | 0, current_dir); | |
80856e74 | 583 | } |
aba637ec KS |
584 | |
585 | UNBLOCK_INPUT; | |
bad95d8f | 586 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
587 | |
588 | /* The MSDOS case did this already. */ | |
589 | if (fd_error >= 0) | |
68c45bf0 | 590 | emacs_close (fd_error); |
2610078a | 591 | #endif /* not MSDOS */ |
80856e74 | 592 | |
80856e74 JB |
593 | environ = save_environ; |
594 | ||
6b6e798b RS |
595 | /* Close most of our fd's, but not fd[0] |
596 | since we will use that to read input from. */ | |
68c45bf0 | 597 | emacs_close (filefd); |
799abb26 | 598 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 599 | emacs_close (fd1); |
80856e74 JB |
600 | } |
601 | ||
602 | if (pid < 0) | |
603 | { | |
6b6e798b | 604 | if (fd[0] >= 0) |
68c45bf0 | 605 | emacs_close (fd[0]); |
80856e74 JB |
606 | report_file_error ("Doing vfork", Qnil); |
607 | } | |
608 | ||
d50d3dc8 | 609 | if (INTEGERP (buffer)) |
80856e74 | 610 | { |
6b6e798b | 611 | if (fd[0] >= 0) |
68c45bf0 | 612 | emacs_close (fd[0]); |
80856e74 JB |
613 | return Qnil; |
614 | } | |
615 | ||
6b6e798b | 616 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
617 | call_process_exited = 0; |
618 | ||
e39a993c | 619 | #if defined(MSDOS) |
7e6c2178 RS |
620 | /* MSDOS needs different cleanup information. */ |
621 | record_unwind_protect (call_process_cleanup, | |
ad3aaf33 AS |
622 | Fcons (Fcurrent_buffer (), |
623 | Fcons (make_number (fd[0]), | |
624 | build_string (tempfile)))); | |
7e6c2178 | 625 | #else |
80856e74 | 626 | record_unwind_protect (call_process_cleanup, |
ad3aaf33 AS |
627 | Fcons (Fcurrent_buffer (), |
628 | Fcons (make_number (fd[0]), make_number (pid)))); | |
e39a993c | 629 | #endif /* not MSDOS */ |
80856e74 JB |
630 | |
631 | ||
d50d3dc8 | 632 | if (BUFFERP (buffer)) |
80856e74 JB |
633 | Fset_buffer (buffer); |
634 | ||
09494912 RS |
635 | if (NILP (buffer)) |
636 | { | |
637 | /* If BUFFER is nil, we must read process output once and then | |
638 | discard it, so setup coding system but with nil. */ | |
639 | setup_coding_system (Qnil, &process_coding); | |
640 | } | |
641 | else | |
642 | { | |
643 | Lisp_Object val, *args2; | |
644 | ||
645 | val = Qnil; | |
646 | if (!NILP (Vcoding_system_for_read)) | |
647 | val = Vcoding_system_for_read; | |
648 | else | |
649 | { | |
650 | if (EQ (coding_systems, Qt)) | |
651 | { | |
652 | int i; | |
653 | ||
654 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
655 | args2[0] = Qcall_process; | |
656 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
657 | coding_systems | |
658 | = Ffind_operation_coding_system (nargs + 1, args2); | |
659 | } | |
660 | if (CONSP (coding_systems)) | |
70949dac | 661 | val = XCAR (coding_systems); |
09494912 | 662 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 663 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
664 | else |
665 | val = Qnil; | |
666 | } | |
91183bfd | 667 | Fcheck_coding_system (val); |
09494912 RS |
668 | /* In unibyte mode, character code conversion should not take |
669 | place but EOL conversion should. So, setup raw-text or one | |
670 | of the subsidiary according to the information just setup. */ | |
671 | if (NILP (current_buffer->enable_multibyte_characters) | |
672 | && !NILP (val)) | |
91183bfd KH |
673 | val = raw_text_coding_system (val); |
674 | setup_coding_system (val, &process_coding); | |
09494912 RS |
675 | } |
676 | ||
80856e74 JB |
677 | immediate_quit = 1; |
678 | QUIT; | |
679 | ||
680 | { | |
69481da7 | 681 | register EMACS_INT nread; |
0ad477db | 682 | int first = 1; |
69481da7 | 683 | EMACS_INT total_read = 0; |
321fecde | 684 | int carryover = 0; |
0aa2630f | 685 | int display_on_the_fly = display_p; |
05b44e90 KH |
686 | struct coding_system saved_coding; |
687 | ||
688 | saved_coding = process_coding; | |
60558b19 | 689 | while (1) |
80856e74 | 690 | { |
60558b19 RS |
691 | /* Repeatedly read until we've filled as much as possible |
692 | of the buffer size we have. But don't read | |
8e6208c5 | 693 | less than 1024--save that for the next bufferful. */ |
321fecde | 694 | nread = carryover; |
60558b19 | 695 | while (nread < bufsize - 1024) |
00fb3e95 | 696 | { |
4da256b1 | 697 | int this_read = emacs_read (fd[0], buf + nread, |
68c45bf0 | 698 | bufsize - nread); |
60558b19 RS |
699 | |
700 | if (this_read < 0) | |
701 | goto give_up; | |
702 | ||
703 | if (this_read == 0) | |
7a7ab107 KH |
704 | { |
705 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
706 | break; | |
707 | } | |
60558b19 RS |
708 | |
709 | nread += this_read; | |
7a7ab107 | 710 | total_read += this_read; |
60558b19 | 711 | |
7a7ab107 KH |
712 | if (display_on_the_fly) |
713 | break; | |
714 | } | |
60558b19 RS |
715 | |
716 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 717 | immediate_quit = 0; |
177c0ea7 | 718 | |
012c6fcb | 719 | if (!NILP (buffer)) |
32d08644 | 720 | { |
bb4a3884 KH |
721 | if (NILP (current_buffer->enable_multibyte_characters) |
722 | && ! CODING_MAY_REQUIRE_DECODING (&process_coding)) | |
4da256b1 | 723 | insert_1_both (buf, nread, nread, 0, 1, 0); |
32d08644 KH |
724 | else |
725 | { /* We have to decode the input. */ | |
45d60801 | 726 | Lisp_Object curbuf; |
71a0c011 | 727 | int count1 = SPECPDL_INDEX (); |
177c0ea7 | 728 | |
45d60801 | 729 | XSETBUFFER (curbuf, current_buffer); |
71a0c011 EZ |
730 | /* We cannot allow after-change-functions be run |
731 | during decoding, because that might modify the | |
732 | buffer, while we rely on process_coding.produced to | |
733 | faithfully reflect inserted text until we | |
734 | TEMP_SET_PT_BOTH below. */ | |
735 | specbind (Qinhibit_modification_hooks, Qt); | |
45d60801 KH |
736 | decode_coding_c_string (&process_coding, buf, nread, |
737 | curbuf); | |
71a0c011 | 738 | unbind_to (count1, Qnil); |
7a7ab107 | 739 | if (display_on_the_fly |
91183bfd KH |
740 | && CODING_REQUIRE_DETECTION (&saved_coding) |
741 | && ! CODING_REQUIRE_DETECTION (&process_coding)) | |
7a7ab107 KH |
742 | { |
743 | /* We have detected some coding system. But, | |
744 | there's a possibility that the detection was | |
745 | done by insufficient data. So, we give up | |
746 | displaying on the fly. */ | |
91183bfd KH |
747 | if (process_coding.produced > 0) |
748 | del_range_2 (process_coding.dst_pos, | |
749 | process_coding.dst_pos_byte, | |
750 | process_coding.dst_pos | |
751 | + process_coding.produced_char, | |
752 | process_coding.dst_pos_byte | |
753 | + process_coding.produced, 0); | |
7a7ab107 KH |
754 | display_on_the_fly = 0; |
755 | process_coding = saved_coding; | |
756 | carryover = nread; | |
0aa2630f KS |
757 | /* This is to make the above condition always |
758 | fails in the future. */ | |
21d0467f KH |
759 | saved_coding.common_flags |
760 | &= ~CODING_REQUIRE_DETECTION_MASK; | |
7a7ab107 KH |
761 | continue; |
762 | } | |
177c0ea7 | 763 | |
ea99bcc1 KH |
764 | TEMP_SET_PT_BOTH (PT + process_coding.produced_char, |
765 | PT_BYTE + process_coding.produced); | |
54ab3d3b | 766 | carryover = process_coding.carryover_bytes; |
321fecde | 767 | if (carryover > 0) |
72af86bd AS |
768 | memcpy (buf, process_coding.carryover, |
769 | process_coding.carryover_bytes); | |
32d08644 KH |
770 | } |
771 | } | |
c5bfa12b | 772 | |
321fecde | 773 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 774 | break; |
6e3bfbb2 RS |
775 | |
776 | /* Make the buffer bigger as we continue to read more data, | |
4da256b1 KS |
777 | but not past CALLPROC_BUFFER_SIZE_MAX. */ |
778 | if (bufsize < CALLPROC_BUFFER_SIZE_MAX && total_read > 32 * bufsize) | |
779 | if ((bufsize *= 2) > CALLPROC_BUFFER_SIZE_MAX) | |
780 | bufsize = CALLPROC_BUFFER_SIZE_MAX; | |
6e3bfbb2 | 781 | |
0aa2630f | 782 | if (display_p) |
0ad477db RS |
783 | { |
784 | if (first) | |
785 | prepare_menu_bars (); | |
786 | first = 0; | |
3007ebfb | 787 | redisplay_preserve_echo_area (1); |
0aa2630f KS |
788 | /* This variable might have been set to 0 for code |
789 | detection. In that case, we set it back to 1 because | |
790 | we should have already detected a coding system. */ | |
791 | display_on_the_fly = 1; | |
0ad477db | 792 | } |
80856e74 JB |
793 | immediate_quit = 1; |
794 | QUIT; | |
795 | } | |
60558b19 | 796 | give_up: ; |
80856e74 | 797 | |
91183bfd KH |
798 | Vlast_coding_system_used = CODING_ID_NAME (process_coding.id); |
799 | /* If the caller required, let the buffer inherit the | |
800 | coding-system used to decode the process output. */ | |
801 | if (inherit_process_coding_system) | |
802 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
ad3aaf33 | 803 | make_number (total_read)); |
3b440bb5 EZ |
804 | } |
805 | ||
77defa9a | 806 | #ifndef MSDOS |
80856e74 JB |
807 | /* Wait for it to terminate, unless it already has. */ |
808 | wait_for_termination (pid); | |
77defa9a | 809 | #endif |
80856e74 JB |
810 | |
811 | immediate_quit = 0; | |
812 | ||
37d54121 RS |
813 | /* Don't kill any children that the subprocess may have left behind |
814 | when exiting. */ | |
815 | call_process_exited = 1; | |
816 | ||
80856e74 JB |
817 | unbind_to (count, Qnil); |
818 | ||
6b61353c KH |
819 | if (synch_process_termsig) |
820 | { | |
42ca4633 | 821 | const char *signame; |
6b61353c KH |
822 | |
823 | synchronize_system_messages_locale (); | |
824 | signame = strsignal (synch_process_termsig); | |
825 | ||
826 | if (signame == 0) | |
827 | signame = "unknown"; | |
828 | ||
829 | synch_process_death = signame; | |
830 | } | |
831 | ||
80856e74 | 832 | if (synch_process_death) |
68c45bf0 PE |
833 | return code_convert_string_norecord (build_string (synch_process_death), |
834 | Vlocale_coding_system, 0); | |
80856e74 JB |
835 | return make_number (synch_process_retcode); |
836 | } | |
80856e74 | 837 | \f |
9fefd2ba | 838 | static Lisp_Object |
971de7fb | 839 | delete_temp_file (Lisp_Object name) |
80856e74 | 840 | { |
1a271e14 KR |
841 | /* Suppress jka-compr handling, etc. */ |
842 | int count = SPECPDL_INDEX (); | |
843 | specbind (intern ("file-name-handler-alist"), Qnil); | |
f1a5d776 | 844 | internal_delete_file (name); |
1a271e14 | 845 | unbind_to (count, Qnil); |
320695d8 | 846 | return Qnil; |
80856e74 JB |
847 | } |
848 | ||
849 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
fdb82f93 PJ |
850 | 3, MANY, 0, |
851 | doc: /* Send text from START to END to a synchronous process running PROGRAM. | |
852 | The remaining arguments are optional. | |
853 | Delete the text if fourth arg DELETE is non-nil. | |
854 | ||
855 | Insert output in BUFFER before point; t means current buffer; | |
856 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
857 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
858 | REAL-BUFFER says what to do with standard output, as above, | |
859 | while STDERR-FILE says what to do with standard error in the child. | |
860 | STDERR-FILE may be nil (discard standard error output), | |
861 | t (mix it with ordinary output), or a file name string. | |
862 | ||
863 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
864 | Remaining args are passed to PROGRAM at startup as command args. | |
865 | ||
ba9a5174 | 866 | If BUFFER is 0, `call-process-region' returns immediately with value nil. |
fdb82f93 PJ |
867 | Otherwise it waits for PROGRAM to terminate |
868 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
869 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
870 | ||
871 | usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */) | |
5842a27b | 872 | (int nargs, register Lisp_Object *args) |
80856e74 | 873 | { |
39323a7e KH |
874 | struct gcpro gcpro1; |
875 | Lisp_Object filename_string; | |
876 | register Lisp_Object start, end; | |
aed13378 | 877 | int count = SPECPDL_INDEX (); |
08ee4e87 | 878 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 879 | Lisp_Object coding_systems; |
32d08644 KH |
880 | Lisp_Object val, *args2; |
881 | int i; | |
7e6c2178 | 882 | char *tempfile; |
f92d51d8 | 883 | Lisp_Object tmpdir, pattern; |
7e6c2178 | 884 | |
f92d51d8 CY |
885 | if (STRINGP (Vtemporary_file_directory)) |
886 | tmpdir = Vtemporary_file_directory; | |
7e6c2178 RS |
887 | else |
888 | { | |
f92d51d8 CY |
889 | #ifndef DOS_NT |
890 | if (getenv ("TMPDIR")) | |
891 | tmpdir = build_string (getenv ("TMPDIR")); | |
892 | else | |
893 | tmpdir = build_string ("/tmp/"); | |
894 | #else /* DOS_NT */ | |
895 | char *outf; | |
896 | if ((outf = egetenv ("TMPDIR")) | |
897 | || (outf = egetenv ("TMP")) | |
898 | || (outf = egetenv ("TEMP"))) | |
899 | tmpdir = build_string (outf); | |
900 | else | |
901 | tmpdir = Ffile_name_as_directory (build_string ("c:/temp")); | |
0774fcf8 | 902 | #endif |
f92d51d8 | 903 | } |
7e6c2178 | 904 | |
f92d51d8 CY |
905 | pattern = Fexpand_file_name (Vtemp_file_name_pattern, tmpdir); |
906 | tempfile = (char *) alloca (SBYTES (pattern) + 1); | |
72af86bd | 907 | memcpy (tempfile, SDATA (pattern), SBYTES (pattern) + 1); |
09494912 RS |
908 | coding_systems = Qt; |
909 | ||
1ddc85a4 DL |
910 | #ifdef HAVE_MKSTEMP |
911 | { | |
d277f1f7 YM |
912 | int fd; |
913 | ||
914 | BLOCK_INPUT; | |
915 | fd = mkstemp (tempfile); | |
916 | UNBLOCK_INPUT; | |
1ddc85a4 DL |
917 | if (fd == -1) |
918 | report_file_error ("Failed to open temporary file", | |
919 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
920 | else | |
921 | close (fd); | |
922 | } | |
923 | #else | |
80856e74 | 924 | mktemp (tempfile); |
1ddc85a4 | 925 | #endif |
80856e74 JB |
926 | |
927 | filename_string = build_string (tempfile); | |
39323a7e | 928 | GCPRO1 (filename_string); |
80856e74 JB |
929 | start = args[0]; |
930 | end = args[1]; | |
32d08644 | 931 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
932 | if (!NILP (Vcoding_system_for_write)) |
933 | val = Vcoding_system_for_write; | |
934 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
935 | val = Qnil; |
936 | else | |
beacaab3 | 937 | { |
91489411 RS |
938 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
939 | args2[0] = Qcall_process_region; | |
940 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
941 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
942 | if (CONSP (coding_systems)) | |
70949dac | 943 | val = XCDR (coding_systems); |
91489411 | 944 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 945 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 946 | else |
91489411 | 947 | val = Qnil; |
beacaab3 | 948 | } |
32d08644 | 949 | |
168afdaa | 950 | { |
aed13378 | 951 | int count1 = SPECPDL_INDEX (); |
168afdaa RS |
952 | |
953 | specbind (intern ("coding-system-for-write"), val); | |
bb951f0e KR |
954 | /* POSIX lets mk[s]temp use "."; don't invoke jka-compr if we |
955 | happen to get a ".Z" suffix. */ | |
956 | specbind (intern ("file-name-handler-alist"), Qnil); | |
168afdaa RS |
957 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); |
958 | ||
959 | unbind_to (count1, Qnil); | |
960 | } | |
91489411 | 961 | |
177c0ea7 | 962 | /* Note that Fcall_process takes care of binding |
91489411 | 963 | coding-system-for-read. */ |
093650fe | 964 | |
80856e74 JB |
965 | record_unwind_protect (delete_temp_file, filename_string); |
966 | ||
edf496dd | 967 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
968 | Fdelete_region (start, end); |
969 | ||
edf496dd KH |
970 | if (nargs > 3) |
971 | { | |
972 | args += 2; | |
973 | nargs -= 2; | |
974 | } | |
975 | else | |
976 | { | |
977 | args[0] = args[2]; | |
978 | nargs = 2; | |
979 | } | |
980 | args[1] = filename_string; | |
80856e74 | 981 | |
edf496dd | 982 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
983 | } |
984 | \f | |
361358ea | 985 | #ifndef WINDOWSNT |
971de7fb | 986 | static int relocate_fd (int fd, int minfd); |
361358ea | 987 | #endif |
dfcf069d | 988 | |
5990851d KL |
989 | static char ** |
990 | add_env (char **env, char **new_env, char *string) | |
991 | { | |
992 | char **ep; | |
993 | int ok = 1; | |
994 | if (string == NULL) | |
995 | return new_env; | |
996 | ||
997 | /* See if this string duplicates any string already in the env. | |
998 | If so, don't put it in. | |
999 | When an env var has multiple definitions, | |
1000 | we keep the definition that comes first in process-environment. */ | |
1001 | for (ep = env; ok && ep != new_env; ep++) | |
1002 | { | |
1003 | char *p = *ep, *q = string; | |
1004 | while (ok) | |
1005 | { | |
1006 | if (*q != *p) | |
1007 | break; | |
1008 | if (*q == 0) | |
1009 | /* The string is a lone variable name; keep it for now, we | |
1010 | will remove it later. It is a placeholder for a | |
1011 | variable that is not to be included in the environment. */ | |
1012 | break; | |
1013 | if (*q == '=') | |
1014 | ok = 0; | |
1015 | p++, q++; | |
1016 | } | |
1017 | } | |
1018 | if (ok) | |
1019 | *new_env++ = string; | |
1020 | return new_env; | |
1021 | } | |
1022 | ||
80856e74 JB |
1023 | /* This is the last thing run in a newly forked inferior |
1024 | either synchronous or asynchronous. | |
1025 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1026 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1027 | then exec another program based on new_argv. | |
1028 | ||
1029 | This function may change environ for the superior process. | |
1030 | Therefore, the superior process must save and restore the value | |
1031 | of environ around the vfork and the call to this function. | |
1032 | ||
80856e74 | 1033 | SET_PGRP is nonzero if we should put the subprocess into a separate |
177c0ea7 | 1034 | process group. |
e576cab4 JB |
1035 | |
1036 | CURRENT_DIR is an elisp string giving the path of the current | |
1037 | directory the subprocess should have. Since we can't really signal | |
1038 | a decent error from within the child, this should be verified as an | |
1039 | executable directory by the parent. */ | |
80856e74 | 1040 | |
dfcf069d | 1041 | int |
971de7fb | 1042 | child_setup (int in, int out, int err, register char **new_argv, int set_pgrp, Lisp_Object current_dir) |
80856e74 | 1043 | { |
e576cab4 | 1044 | char **env; |
7fcf7f05 | 1045 | char *pwd_var; |
bad95d8f RS |
1046 | #ifdef WINDOWSNT |
1047 | int cpid; | |
4252a4bd | 1048 | HANDLE handles[3]; |
bad95d8f | 1049 | #endif /* WINDOWSNT */ |
e576cab4 | 1050 | |
33abe2d9 | 1051 | int pid = getpid (); |
80856e74 | 1052 | |
80856e74 JB |
1053 | /* Close Emacs's descriptors that this process should not have. */ |
1054 | close_process_descs (); | |
ded80a25 | 1055 | |
c17c4250 EZ |
1056 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1057 | we will lose if we call close_load_descs here. */ | |
1058 | #ifndef DOS_NT | |
4458cebe | 1059 | close_load_descs (); |
c17c4250 | 1060 | #endif |
80856e74 JB |
1061 | |
1062 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1063 | that do not have true vfork or that have true (stack) alloca. | |
caa01fe0 GM |
1064 | If using vfork and C_ALLOCA (when Emacs used to include |
1065 | src/alloca.c) it is safe because that changes the superior's | |
1066 | static variables as if the superior had done alloca and will be | |
1067 | cleaned up in the usual way. */ | |
e576cab4 | 1068 | { |
7fcf7f05 | 1069 | register char *temp; |
e576cab4 | 1070 | register int i; |
77d78be1 | 1071 | |
d5db4077 | 1072 | i = SBYTES (current_dir); |
16425c4a EZ |
1073 | #ifdef MSDOS |
1074 | /* MSDOS must have all environment variables malloc'ed, because | |
1075 | low-level libc functions that launch subsidiary processes rely | |
1076 | on that. */ | |
1077 | pwd_var = (char *) xmalloc (i + 6); | |
1078 | #else | |
7fcf7f05 | 1079 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1080 | #endif |
7fcf7f05 | 1081 | temp = pwd_var + 4; |
72af86bd AS |
1082 | memcpy (pwd_var, "PWD=", 4); |
1083 | memcpy (temp, SDATA (current_dir), i); | |
bad95d8f | 1084 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1085 | temp[i] = 0; |
1086 | ||
c17c4250 | 1087 | #ifndef DOS_NT |
e576cab4 JB |
1088 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1089 | the callers check the current directory before forking, this | |
1090 | should only return an error if the directory's permissions | |
1091 | are changed between the check and this chdir, but we should | |
1092 | at least check. */ | |
1093 | if (chdir (temp) < 0) | |
20b25e46 | 1094 | _exit (errno); |
f8d23104 | 1095 | #else /* DOS_NT */ |
c17c4250 EZ |
1096 | /* Get past the drive letter, so that d:/ is left alone. */ |
1097 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1098 | { | |
1099 | temp += 2; | |
1100 | i -= 2; | |
1101 | } | |
f8d23104 | 1102 | #endif /* DOS_NT */ |
c17c4250 | 1103 | |
7fcf7f05 | 1104 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1105 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1106 | temp[--i] = 0; |
e576cab4 | 1107 | } |
80856e74 | 1108 | |
5990851d | 1109 | /* Set `env' to a vector of the strings in the environment. */ |
80856e74 JB |
1110 | { |
1111 | register Lisp_Object tem; | |
1112 | register char **new_env; | |
5990851d | 1113 | char **p, **q; |
80856e74 | 1114 | register int new_length; |
d2bb6598 | 1115 | Lisp_Object display = Qnil; |
361358ea | 1116 | |
80856e74 | 1117 | new_length = 0; |
f105f403 | 1118 | |
80856e74 | 1119 | for (tem = Vprocess_environment; |
5990851d KL |
1120 | CONSP (tem) && STRINGP (XCAR (tem)); |
1121 | tem = XCDR (tem)) | |
d2bb6598 SM |
1122 | { |
1123 | if (strncmp (SDATA (XCAR (tem)), "DISPLAY", 7) == 0 | |
1124 | && (SDATA (XCAR (tem)) [7] == '\0' | |
1125 | || SDATA (XCAR (tem)) [7] == '=')) | |
1126 | /* DISPLAY is specified in process-environment. */ | |
1127 | display = Qt; | |
1128 | new_length++; | |
1129 | } | |
de87fb59 | 1130 | |
d2bb6598 SM |
1131 | /* If not provided yet, use the frame's DISPLAY. */ |
1132 | if (NILP (display)) | |
1133 | { | |
1134 | Lisp_Object tmp = Fframe_parameter (selected_frame, Qdisplay); | |
1135 | if (!STRINGP (tmp) && CONSP (Vinitial_environment)) | |
1136 | /* If still not found, Look for DISPLAY in Vinitial_environment. */ | |
1137 | tmp = Fgetenv_internal (build_string ("DISPLAY"), | |
1138 | Vinitial_environment); | |
1139 | if (STRINGP (tmp)) | |
1140 | { | |
1141 | display = tmp; | |
1142 | new_length++; | |
1143 | } | |
1144 | } | |
80856e74 | 1145 | |
7fcf7f05 RS |
1146 | /* new_length + 2 to include PWD and terminating 0. */ |
1147 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
7fcf7f05 RS |
1148 | /* If we have a PWD envvar, pass one down, |
1149 | but with corrected value. */ | |
a13f8f50 | 1150 | if (egetenv ("PWD")) |
7fcf7f05 | 1151 | *new_env++ = pwd_var; |
361358ea | 1152 | |
6b8e474c | 1153 | if (STRINGP (display)) |
de87fb59 DN |
1154 | { |
1155 | int vlen = strlen ("DISPLAY=") + strlen (SDATA (display)) + 1; | |
1156 | char *vdata = (char *) alloca (vlen); | |
1157 | strcpy (vdata, "DISPLAY="); | |
1158 | strcat (vdata, SDATA (display)); | |
1159 | new_env = add_env (env, new_env, vdata); | |
1160 | } | |
80856e74 | 1161 | |
5990851d | 1162 | /* Overrides. */ |
80856e74 | 1163 | for (tem = Vprocess_environment; |
70949dac KR |
1164 | CONSP (tem) && STRINGP (XCAR (tem)); |
1165 | tem = XCDR (tem)) | |
5990851d | 1166 | new_env = add_env (env, new_env, SDATA (XCAR (tem))); |
d2bb6598 | 1167 | |
5990851d KL |
1168 | *new_env = 0; |
1169 | ||
1170 | /* Remove variable names without values. */ | |
1171 | p = q = env; | |
1172 | while (*p != 0) | |
cd9565ba | 1173 | { |
5990851d | 1174 | while (*q != 0 && strchr (*q, '=') == NULL) |
1baf6db9 | 1175 | q++; |
5990851d KL |
1176 | *p = *q++; |
1177 | if (*p != 0) | |
1178 | p++; | |
cd9565ba | 1179 | } |
80856e74 | 1180 | } |
de87fb59 | 1181 | |
361358ea | 1182 | |
bad95d8f RS |
1183 | #ifdef WINDOWSNT |
1184 | prepare_standard_handles (in, out, err, handles); | |
d5db4077 | 1185 | set_process_dir (SDATA (current_dir)); |
bad95d8f | 1186 | #else /* not WINDOWSNT */ |
426b37ae JB |
1187 | /* Make sure that in, out, and err are not actually already in |
1188 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1189 | started with its standard in, out, or error closed, as might |
426b37ae | 1190 | happen under X. */ |
f29f9e4a RS |
1191 | { |
1192 | int oin = in, oout = out; | |
1193 | ||
1194 | /* We have to avoid relocating the same descriptor twice! */ | |
1195 | ||
1196 | in = relocate_fd (in, 3); | |
1197 | ||
1198 | if (out == oin) | |
1199 | out = in; | |
1200 | else | |
3e9367e7 | 1201 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1202 | |
1203 | if (err == oin) | |
1204 | err = in; | |
1205 | else if (err == oout) | |
1206 | err = out; | |
1207 | else | |
3e9367e7 | 1208 | err = relocate_fd (err, 3); |
f29f9e4a | 1209 | } |
426b37ae | 1210 | |
c17c4250 | 1211 | #ifndef MSDOS |
68c45bf0 PE |
1212 | emacs_close (0); |
1213 | emacs_close (1); | |
1214 | emacs_close (2); | |
80856e74 JB |
1215 | |
1216 | dup2 (in, 0); | |
1217 | dup2 (out, 1); | |
1218 | dup2 (err, 2); | |
68c45bf0 | 1219 | emacs_close (in); |
ce8f5a9a AS |
1220 | if (out != in) |
1221 | emacs_close (out); | |
1222 | if (err != in && err != out) | |
1223 | emacs_close (err); | |
c17c4250 | 1224 | #endif /* not MSDOS */ |
bad95d8f | 1225 | #endif /* not WINDOWSNT */ |
80856e74 | 1226 | |
58eb6cf0 | 1227 | #if defined(USG) |
fdba8590 | 1228 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1229 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1230 | #endif |
e576cab4 JB |
1231 | #else |
1232 | setpgrp (pid, pid); | |
1233 | #endif /* USG */ | |
80856e74 | 1234 | |
c17c4250 EZ |
1235 | #ifdef MSDOS |
1236 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
a3f0666f | 1237 | xfree (pwd_var); |
c17c4250 EZ |
1238 | if (pid == -1) |
1239 | /* An error occurred while trying to run the subprocess. */ | |
1240 | report_file_error ("Spawning child process", Qnil); | |
1241 | return pid; | |
1242 | #else /* not MSDOS */ | |
bad95d8f RS |
1243 | #ifdef WINDOWSNT |
1244 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1245 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1246 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1247 | if (cpid == -1) |
1248 | /* An error occurred while trying to spawn the process. */ | |
1249 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1250 | return cpid; |
1251 | #else /* not WINDOWSNT */ | |
a7ebc409 DN |
1252 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1253 | EMACS_SET_TTY_PGRP (0, &pid); | |
1254 | ||
80856e74 JB |
1255 | /* execvp does not accept an environment arg so the only way |
1256 | to pass this environment is to set environ. Our caller | |
1257 | is responsible for restoring the ambient value of environ. */ | |
1258 | environ = env; | |
1259 | execvp (new_argv[0], new_argv); | |
1260 | ||
68c45bf0 PE |
1261 | emacs_write (1, "Can't exec program: ", 20); |
1262 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1263 | emacs_write (1, "\n", 1); | |
80856e74 | 1264 | _exit (1); |
bad95d8f | 1265 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1266 | #endif /* not MSDOS */ |
80856e74 JB |
1267 | } |
1268 | ||
361358ea | 1269 | #ifndef WINDOWSNT |
a3833dfe | 1270 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1271 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1272 | static int |
971de7fb | 1273 | relocate_fd (int fd, int minfd) |
426b37ae | 1274 | { |
a3833dfe | 1275 | if (fd >= minfd) |
426b37ae JB |
1276 | return fd; |
1277 | else | |
1278 | { | |
cf237e27 AS |
1279 | int new; |
1280 | #ifdef F_DUPFD | |
1281 | new = fcntl (fd, F_DUPFD, minfd); | |
1282 | #else | |
1283 | new = dup (fd); | |
1284 | if (new != -1) | |
1285 | /* Note that we hold the original FD open while we recurse, | |
1286 | to guarantee we'll get a new FD if we need it. */ | |
1287 | new = relocate_fd (new, minfd); | |
1288 | #endif | |
426b37ae JB |
1289 | if (new == -1) |
1290 | { | |
a8fe7202 AS |
1291 | const char *message1 = "Error while setting up child: "; |
1292 | const char *errmessage = strerror (errno); | |
1293 | const char *message2 = "\n"; | |
68c45bf0 PE |
1294 | emacs_write (2, message1, strlen (message1)); |
1295 | emacs_write (2, errmessage, strlen (errmessage)); | |
1296 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1297 | _exit (1); |
1298 | } | |
68c45bf0 | 1299 | emacs_close (fd); |
426b37ae JB |
1300 | return new; |
1301 | } | |
1302 | } | |
361358ea | 1303 | #endif /* not WINDOWSNT */ |
426b37ae | 1304 | |
012c6fcb | 1305 | static int |
a8fe7202 AS |
1306 | getenv_internal_1 (const char *var, int varlen, char **value, int *valuelen, |
1307 | Lisp_Object env) | |
012c6fcb | 1308 | { |
db699fc6 | 1309 | for (; CONSP (env); env = XCDR (env)) |
012c6fcb | 1310 | { |
db699fc6 | 1311 | Lisp_Object entry = XCAR (env); |
d50d3dc8 | 1312 | if (STRINGP (entry) |
db699fc6 | 1313 | && SBYTES (entry) >= varlen |
bad95d8f RS |
1314 | #ifdef WINDOWSNT |
1315 | /* NT environment variables are case insensitive. */ | |
d5db4077 | 1316 | && ! strnicmp (SDATA (entry), var, varlen) |
bad95d8f | 1317 | #else /* not WINDOWSNT */ |
72af86bd | 1318 | && ! memcmp (SDATA (entry), var, varlen) |
bad95d8f | 1319 | #endif /* not WINDOWSNT */ |
a9971c6d | 1320 | ) |
012c6fcb | 1321 | { |
db699fc6 SM |
1322 | if (SBYTES (entry) > varlen && SREF (entry, varlen) == '=') |
1323 | { | |
1324 | *value = (char *) SDATA (entry) + (varlen + 1); | |
1325 | *valuelen = SBYTES (entry) - (varlen + 1); | |
1326 | return 1; | |
1327 | } | |
1328 | else if (SBYTES (entry) == varlen) | |
1329 | { | |
1330 | /* Lone variable names in Vprocess_environment mean that | |
1331 | variable should be removed from the environment. */ | |
1332 | *value = NULL; | |
1333 | return 1; | |
1334 | } | |
1335 | } | |
1336 | } | |
1337 | return 0; | |
1338 | } | |
1339 | ||
012c6fcb | 1340 | static int |
a8fe7202 AS |
1341 | getenv_internal (const char *var, int varlen, char **value, int *valuelen, |
1342 | Lisp_Object frame) | |
012c6fcb | 1343 | { |
d2bb6598 SM |
1344 | /* Try to find VAR in Vprocess_environment first. */ |
1345 | if (getenv_internal_1 (var, varlen, value, valuelen, | |
1346 | Vprocess_environment)) | |
1347 | return *value ? 1 : 0; | |
f105f403 | 1348 | |
d2bb6598 | 1349 | /* For DISPLAY try to get the values from the frame or the initial env. */ |
de87fb59 | 1350 | if (strcmp (var, "DISPLAY") == 0) |
d2bb6598 SM |
1351 | { |
1352 | Lisp_Object display | |
1353 | = Fframe_parameter (NILP (frame) ? selected_frame : frame, Qdisplay); | |
1354 | if (STRINGP (display)) | |
1355 | { | |
de87fb59 DN |
1356 | *value = (char *) SDATA (display); |
1357 | *valuelen = SBYTES (display); | |
012c6fcb JA |
1358 | return 1; |
1359 | } | |
d2bb6598 SM |
1360 | /* If still not found, Look for DISPLAY in Vinitial_environment. */ |
1361 | if (getenv_internal_1 (var, varlen, value, valuelen, | |
1362 | Vinitial_environment)) | |
1363 | return *value ? 1 : 0; | |
012c6fcb JA |
1364 | } |
1365 | ||
1366 | return 0; | |
1367 | } | |
1368 | ||
f105f403 | 1369 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 2, 0, |
5990851d KL |
1370 | doc: /* Get the value of environment variable VARIABLE. |
1371 | VARIABLE should be a string. Value is nil if VARIABLE is undefined in | |
1372 | the environment. Otherwise, value is a string. | |
f105f403 | 1373 | |
acf20901 | 1374 | This function searches `process-environment' for VARIABLE. |
5990851d | 1375 | |
db699fc6 | 1376 | If optional parameter ENV is a list, then search this list instead of |
acf20901 JB |
1377 | `process-environment', and return t when encountering a negative entry |
1378 | \(an entry for a variable with no value). */) | |
5842a27b | 1379 | (Lisp_Object variable, Lisp_Object env) |
012c6fcb JA |
1380 | { |
1381 | char *value; | |
1382 | int valuelen; | |
1383 | ||
5990851d | 1384 | CHECK_STRING (variable); |
db699fc6 SM |
1385 | if (CONSP (env)) |
1386 | { | |
1387 | if (getenv_internal_1 (SDATA (variable), SBYTES (variable), | |
1388 | &value, &valuelen, env)) | |
1389 | return value ? make_string (value, valuelen) : Qt; | |
1390 | else | |
1391 | return Qnil; | |
1392 | } | |
1393 | else if (getenv_internal (SDATA (variable), SBYTES (variable), | |
d2bb6598 | 1394 | &value, &valuelen, env)) |
012c6fcb JA |
1395 | return make_string (value, valuelen); |
1396 | else | |
1397 | return Qnil; | |
1398 | } | |
1399 | ||
5990851d KL |
1400 | /* A version of getenv that consults the Lisp environment lists, |
1401 | easily callable from C. */ | |
012c6fcb | 1402 | char * |
a8fe7202 | 1403 | egetenv (const char *var) |
012c6fcb JA |
1404 | { |
1405 | char *value; | |
1406 | int valuelen; | |
1407 | ||
f105f403 | 1408 | if (getenv_internal (var, strlen (var), &value, &valuelen, Qnil)) |
012c6fcb JA |
1409 | return value; |
1410 | else | |
1411 | return 0; | |
1412 | } | |
1413 | ||
80856e74 | 1414 | \f |
8de15d69 | 1415 | /* This is run before init_cmdargs. */ |
177c0ea7 | 1416 | |
dfcf069d | 1417 | void |
971de7fb | 1418 | init_callproc_1 (void) |
8de15d69 RS |
1419 | { |
1420 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1421 | char *doc_dir = egetenv ("EMACSDOC"); |
1422 | ||
8de15d69 | 1423 | Vdata_directory |
177c0ea7 | 1424 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1425 | : PATH_DATA)); |
35a2f4b8 KH |
1426 | Vdoc_directory |
1427 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1428 | : PATH_DOC)); | |
9453ea7b | 1429 | |
e576cab4 | 1430 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1431 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1432 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1433 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1434 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1435 | } |
1436 | ||
e17f7533 | 1437 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1438 | |
dfcf069d | 1439 | void |
971de7fb | 1440 | init_callproc (void) |
8de15d69 RS |
1441 | { |
1442 | char *data_dir = egetenv ("EMACSDATA"); | |
177c0ea7 | 1443 | |
8de15d69 RS |
1444 | register char * sh; |
1445 | Lisp_Object tempdir; | |
1446 | ||
9cc4fad5 | 1447 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1448 | { |
05630743 RS |
1449 | /* Add to the path the lib-src subdir of the installation dir. */ |
1450 | Lisp_Object tem; | |
1451 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1452 | Vinstallation_directory); | |
bad95d8f | 1453 | #ifndef DOS_NT |
1a6640ec | 1454 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc | 1455 | if (NILP (Fmember (tem, Vexec_path))) |
70ec1377 RS |
1456 | { |
1457 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); | |
1458 | Vexec_path = Fcons (tem, Vexec_path); | |
1459 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
1460 | } | |
177c0ea7 | 1461 | |
0fa248bc | 1462 | Vexec_directory = Ffile_name_as_directory (tem); |
bad95d8f | 1463 | #endif /* not DOS_NT */ |
8de15d69 | 1464 | |
e17f7533 RS |
1465 | /* Maybe use ../etc as well as ../lib-src. */ |
1466 | if (data_dir == 0) | |
1467 | { | |
1468 | tem = Fexpand_file_name (build_string ("etc"), | |
1469 | Vinstallation_directory); | |
1470 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1471 | } |
1472 | } | |
7e933683 RS |
1473 | |
1474 | /* Look for the files that should be in etc. We don't use | |
1475 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1476 | near the executable, and they are never in the build |
7e933683 RS |
1477 | directory when that's different from the source directory. |
1478 | ||
1479 | Instead, if these files are not in the nominal place, we try the | |
1480 | source directory. */ | |
1481 | if (data_dir == 0) | |
1482 | { | |
70ec1377 | 1483 | Lisp_Object tem, tem1, srcdir; |
7e933683 | 1484 | |
70ec1377 RS |
1485 | srcdir = Fexpand_file_name (build_string ("../src/"), |
1486 | build_string (PATH_DUMPLOADSEARCH)); | |
7e933683 RS |
1487 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); |
1488 | tem1 = Ffile_exists_p (tem); | |
70ec1377 | 1489 | if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1)) |
7e933683 | 1490 | { |
70ec1377 | 1491 | Lisp_Object newdir; |
7e933683 RS |
1492 | newdir = Fexpand_file_name (build_string ("../etc/"), |
1493 | build_string (PATH_DUMPLOADSEARCH)); | |
1494 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1495 | tem1 = Ffile_exists_p (tem); | |
1496 | if (!NILP (tem1)) | |
1497 | Vdata_directory = newdir; | |
1498 | } | |
1499 | } | |
80856e74 | 1500 | |
d883eb62 RS |
1501 | #ifndef CANNOT_DUMP |
1502 | if (initialized) | |
1503 | #endif | |
1504 | { | |
1505 | tempdir = Fdirectory_file_name (Vexec_directory); | |
d5db4077 | 1506 | if (access (SDATA (tempdir), 0) < 0) |
d883eb62 RS |
1507 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", |
1508 | Vexec_directory); | |
1509 | } | |
80856e74 | 1510 | |
e576cab4 | 1511 | tempdir = Fdirectory_file_name (Vdata_directory); |
d5db4077 | 1512 | if (access (SDATA (tempdir), 0) < 0) |
76d5c6cf RS |
1513 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1514 | Vdata_directory); | |
e576cab4 | 1515 | |
e576cab4 | 1516 | sh = (char *) getenv ("SHELL"); |
80856e74 | 1517 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
8abd035b | 1518 | |
40b49d4b JB |
1519 | #ifdef DOS_NT |
1520 | Vshared_game_score_directory = Qnil; | |
1521 | #else | |
63789758 RS |
1522 | Vshared_game_score_directory = build_string (PATH_GAME); |
1523 | if (NILP (Ffile_directory_p (Vshared_game_score_directory))) | |
1524 | Vshared_game_score_directory = Qnil; | |
40b49d4b | 1525 | #endif |
9fefd2ba JB |
1526 | } |
1527 | ||
dfcf069d | 1528 | void |
971de7fb | 1529 | set_initial_environment (void) |
9fefd2ba JB |
1530 | { |
1531 | register char **envp; | |
7bfa6d77 AS |
1532 | #ifdef CANNOT_DUMP |
1533 | Vprocess_environment = Qnil; | |
edfda783 | 1534 | #else |
7bfa6d77 | 1535 | if (initialized) |
edfda783 | 1536 | #endif |
7bfa6d77 | 1537 | { |
a13f8f50 | 1538 | for (envp = environ; *envp; envp++) |
de87fb59 DN |
1539 | Vprocess_environment = Fcons (build_string (*envp), |
1540 | Vprocess_environment); | |
3c33c79a SM |
1541 | /* Ideally, the `copy' shouldn't be necessary, but it seems it's frequent |
1542 | to use `delete' and friends on process-environment. */ | |
1543 | Vinitial_environment = Fcopy_sequence (Vprocess_environment); | |
a13f8f50 | 1544 | } |
80856e74 JB |
1545 | } |
1546 | ||
dfcf069d | 1547 | void |
971de7fb | 1548 | syms_of_callproc (void) |
80856e74 | 1549 | { |
bad95d8f | 1550 | #ifdef DOS_NT |
093650fe RS |
1551 | Qbuffer_file_type = intern ("buffer-file-type"); |
1552 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1553 | #endif /* DOS_NT */ |
7e6c2178 | 1554 | |
f92d51d8 CY |
1555 | #ifndef DOS_NT |
1556 | Vtemp_file_name_pattern = build_string ("emacsXXXXXX"); | |
1557 | #elif defined (WINDOWSNT) | |
1558 | Vtemp_file_name_pattern = build_string ("emXXXXXX"); | |
1559 | #else | |
1560 | Vtemp_file_name_pattern = build_string ("detmp.XXX"); | |
1561 | #endif | |
1562 | staticpro (&Vtemp_file_name_pattern); | |
1563 | ||
80856e74 | 1564 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
fdb82f93 | 1565 | doc: /* *File name to load inferior shells from. |
b20b29be EZ |
1566 | Initialized from the SHELL environment variable, or to a system-dependent |
1567 | default if SHELL is not set. */); | |
80856e74 JB |
1568 | |
1569 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
fdb82f93 PJ |
1570 | doc: /* *List of directories to search programs to run in subprocesses. |
1571 | Each element is a string (directory name) or nil (try default directory). */); | |
80856e74 | 1572 | |
b81a1b72 | 1573 | DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, |
fdb82f93 PJ |
1574 | doc: /* *List of suffixes to try to find executable file names. |
1575 | Each element is a string. */); | |
33d5af99 | 1576 | Vexec_suffixes = Qnil; |
b81a1b72 | 1577 | |
80856e74 | 1578 | DEFVAR_LISP ("exec-directory", &Vexec_directory, |
fdb82f93 PJ |
1579 | doc: /* Directory for executables for Emacs to invoke. |
1580 | More generally, this includes any architecture-dependent files | |
1581 | that are built and installed from the Emacs distribution. */); | |
e576cab4 JB |
1582 | |
1583 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
fdb82f93 PJ |
1584 | doc: /* Directory of machine-independent files that come with GNU Emacs. |
1585 | These are files intended for Emacs to use while it runs. */); | |
80856e74 | 1586 | |
35a2f4b8 | 1587 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
fdb82f93 | 1588 | doc: /* Directory containing the DOC file that comes with GNU Emacs. |
ebf24b59 | 1589 | This is usually the same as `data-directory'. */); |
35a2f4b8 | 1590 | |
ed61592a | 1591 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
fdb82f93 PJ |
1592 | doc: /* For internal use by the build procedure only. |
1593 | This is the name of the directory in which the build procedure installed | |
ebf24b59 | 1594 | Emacs's info files; the default value for `Info-default-directory-list' |
fdb82f93 | 1595 | includes this. */); |
ed61592a JB |
1596 | Vconfigure_info_directory = build_string (PATH_INFO); |
1597 | ||
1e7ce61b | 1598 | DEFVAR_LISP ("shared-game-score-directory", &Vshared_game_score_directory, |
b065672a CW |
1599 | doc: /* Directory of score files for games which come with GNU Emacs. |
1600 | If this variable is nil, then Emacs is unable to use a shared directory. */); | |
40b49d4b JB |
1601 | #ifdef DOS_NT |
1602 | Vshared_game_score_directory = Qnil; | |
1603 | #else | |
63789758 | 1604 | Vshared_game_score_directory = build_string (PATH_GAME); |
40b49d4b | 1605 | #endif |
b065672a | 1606 | |
6b8e474c SM |
1607 | DEFVAR_LISP ("initial-environment", &Vinitial_environment, |
1608 | doc: /* List of environment variables inherited from the parent process. | |
1609 | Each element should be a string of the form ENVVARNAME=VALUE. | |
1610 | The elements must normally be decoded (using `locale-coding-system') for use. */); | |
1611 | Vinitial_environment = Qnil; | |
1612 | ||
80856e74 | 1613 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
5990851d | 1614 | doc: /* List of overridden environment variables for subprocesses to inherit. |
fdb82f93 | 1615 | Each element should be a string of the form ENVVARNAME=VALUE. |
5990851d | 1616 | |
a13f8f50 KL |
1617 | Entries in this list take precedence to those in the frame-local |
1618 | environments. Therefore, let-binding `process-environment' is an easy | |
1619 | way to temporarily change the value of an environment variable, | |
1620 | irrespective of where it comes from. To use `process-environment' to | |
1621 | remove an environment variable, include only its name in the list, | |
1622 | without "=VALUE". | |
5990851d KL |
1623 | |
1624 | This variable is set to nil when Emacs starts. | |
1625 | ||
fdb82f93 PJ |
1626 | If multiple entries define the same variable, the first one always |
1627 | takes precedence. | |
5990851d | 1628 | |
776a24a1 | 1629 | Non-ASCII characters are encoded according to the initial value of |
5990851d KL |
1630 | `locale-coding-system', i.e. the elements must normally be decoded for |
1631 | use. | |
1632 | ||
776a24a1 | 1633 | See `setenv' and `getenv'. */); |
86f5ca04 | 1634 | Vprocess_environment = Qnil; |
80856e74 | 1635 | |
80856e74 | 1636 | defsubr (&Scall_process); |
83fa009c | 1637 | defsubr (&Sgetenv_internal); |
e576cab4 | 1638 | defsubr (&Scall_process_region); |
80856e74 | 1639 | } |
6b61353c KH |
1640 | |
1641 | /* arch-tag: 769b8045-1df7-4d2b-8968-e3fb49017f95 | |
1642 | (do not change this comment) */ |