Commit | Line | Data |
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80856e74 | 1 | /* Synchronous subprocess invocation for GNU Emacs. |
fe12847a | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001, |
8cabe764 GM |
3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
4 | Free Software Foundation, Inc. | |
80856e74 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
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> |
80856e74 | 26 | |
03695ace | 27 | #ifndef USE_CRT_DLL |
426b37ae | 28 | extern int errno; |
03695ace | 29 | #endif |
426b37ae | 30 | |
80856e74 JB |
31 | /* Define SIGCHLD as an alias for SIGCLD. */ |
32 | ||
33 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
34 | #define SIGCHLD SIGCLD | |
35 | #endif /* SIGCLD */ | |
36 | ||
37 | #include <sys/types.h> | |
88a64fef | 38 | |
3cbd6585 GM |
39 | #ifdef HAVE_UNISTD_H |
40 | #include <unistd.h> | |
41 | #endif | |
42 | ||
80856e74 | 43 | #include <sys/file.h> |
776a24a1 | 44 | #ifdef HAVE_FCNTL_H |
472e83fe | 45 | #define INCLUDED_FCNTL |
80856e74 JB |
46 | #include <fcntl.h> |
47 | #endif | |
48 | ||
bad95d8f RS |
49 | #ifdef WINDOWSNT |
50 | #define NOMINMAX | |
51 | #include <windows.h> | |
52 | #include <stdlib.h> /* for proper declaration of environ */ | |
53 | #include <fcntl.h> | |
489f9371 | 54 | #include "w32.h" |
bad95d8f RS |
55 | #define _P_NOWAIT 1 /* from process.h */ |
56 | #endif | |
57 | ||
7e6c2178 | 58 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
472e83fe | 59 | #define INCLUDED_FCNTL |
7e6c2178 RS |
60 | #include <fcntl.h> |
61 | #include <sys/stat.h> | |
62 | #include <sys/param.h> | |
63 | #include <errno.h> | |
64 | #endif /* MSDOS */ | |
65 | ||
80856e74 JB |
66 | #ifndef O_RDONLY |
67 | #define O_RDONLY 0 | |
68 | #endif | |
69 | ||
70 | #ifndef O_WRONLY | |
71 | #define O_WRONLY 1 | |
72 | #endif | |
73 | ||
74 | #include "lisp.h" | |
75 | #include "commands.h" | |
76 | #include "buffer.h" | |
91183bfd | 77 | #include "character.h" |
edf496dd | 78 | #include "ccl.h" |
32d08644 | 79 | #include "coding.h" |
f0b950cf | 80 | #include "composite.h" |
57bda87a | 81 | #include <epaths.h> |
80856e74 | 82 | #include "process.h" |
d177f194 | 83 | #include "syssignal.h" |
a129418f | 84 | #include "systty.h" |
aba637ec | 85 | #include "blockinput.h" |
f105f403 KL |
86 | #include "frame.h" |
87 | #include "termhooks.h" | |
80856e74 | 88 | |
5f027cea EZ |
89 | #ifdef MSDOS |
90 | #include "msdos.h" | |
91 | #endif | |
92 | ||
80856e74 JB |
93 | #ifdef VMS |
94 | extern noshare char **environ; | |
95 | #else | |
03695ace | 96 | #ifndef USE_CRT_DLL |
80856e74 JB |
97 | extern char **environ; |
98 | #endif | |
03695ace | 99 | #endif |
80856e74 | 100 | |
f95c3f91 | 101 | #ifdef HAVE_SETPGID |
2b7e8799 | 102 | #if !defined (USG) || defined (BSD_PGRPS) |
320695d8 | 103 | #undef setpgrp |
f95c3f91 GM |
104 | #define setpgrp setpgid |
105 | #endif | |
2b7e8799 | 106 | #endif |
f95c3f91 | 107 | |
b81a1b72 SM |
108 | Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes; |
109 | Lisp_Object Vdata_directory, Vdoc_directory; | |
1e7ce61b | 110 | Lisp_Object Vconfigure_info_directory, Vshared_game_score_directory; |
8abd035b | 111 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
112 | |
113 | Lisp_Object Vshell_file_name; | |
114 | ||
6b8e474c | 115 | Lisp_Object Vprocess_environment, Vinitial_environment; |
80856e74 | 116 | |
bad95d8f | 117 | #ifdef DOS_NT |
093650fe | 118 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 119 | #endif /* DOS_NT */ |
093650fe | 120 | |
e0f24100 | 121 | /* True if we are about to fork off a synchronous process or if we |
80856e74 JB |
122 | are waiting for it. */ |
123 | int synch_process_alive; | |
124 | ||
125 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
126 | char *synch_process_death; | |
127 | ||
6b61353c KH |
128 | /* Nonzero => this is the signal number that terminated the subprocess. */ |
129 | int synch_process_termsig; | |
130 | ||
80856e74 JB |
131 | /* If synch_process_death is zero, |
132 | this is exit code of synchronous subprocess. */ | |
133 | int synch_process_retcode; | |
f105f403 | 134 | |
80856e74 | 135 | \f |
37d54121 RS |
136 | /* Clean up when exiting Fcall_process. |
137 | On MSDOS, delete the temporary file on any kind of termination. | |
138 | On Unix, kill the process and any children on termination by signal. */ | |
139 | ||
140 | /* Nonzero if this is termination due to exit. */ | |
141 | static int call_process_exited; | |
142 | ||
d2bb6598 SM |
143 | EXFUN (Fgetenv_internal, 2); |
144 | ||
80856e74 JB |
145 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
146 | ||
d177f194 JB |
147 | static Lisp_Object |
148 | call_process_kill (fdpid) | |
149 | Lisp_Object fdpid; | |
150 | { | |
68c45bf0 | 151 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
152 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
153 | synch_process_alive = 0; | |
154 | return Qnil; | |
155 | } | |
156 | ||
80856e74 JB |
157 | Lisp_Object |
158 | call_process_cleanup (fdpid) | |
159 | Lisp_Object fdpid; | |
160 | { | |
e39a993c | 161 | #if defined (MSDOS) |
7e6c2178 | 162 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
163 | register Lisp_Object file; |
164 | file = Fcdr (fdpid); | |
68c45bf0 | 165 | emacs_close (XFASTINT (Fcar (fdpid))); |
d5db4077 KR |
166 | if (strcmp (SDATA (file), NULL_DEVICE) != 0) |
167 | unlink (SDATA (file)); | |
e39a993c | 168 | #else /* not MSDOS */ |
d177f194 JB |
169 | register int pid = XFASTINT (Fcdr (fdpid)); |
170 | ||
37d54121 | 171 | if (call_process_exited) |
6b6e798b | 172 | { |
68c45bf0 | 173 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
174 | return Qnil; |
175 | } | |
37d54121 | 176 | |
d177f194 JB |
177 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
178 | { | |
aed13378 | 179 | int count = SPECPDL_INDEX (); |
d177f194 JB |
180 | record_unwind_protect (call_process_kill, fdpid); |
181 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
182 | immediate_quit = 1; | |
183 | QUIT; | |
184 | wait_for_termination (pid); | |
185 | immediate_quit = 0; | |
186 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
187 | message1 ("Waiting for process to die...done"); | |
188 | } | |
80856e74 | 189 | synch_process_alive = 0; |
68c45bf0 | 190 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 191 | #endif /* not MSDOS */ |
80856e74 JB |
192 | return Qnil; |
193 | } | |
194 | ||
195 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
fdb82f93 PJ |
196 | doc: /* Call PROGRAM synchronously in separate process. |
197 | The remaining arguments are optional. | |
198 | The program's input comes from file INFILE (nil means `/dev/null'). | |
199 | Insert output in BUFFER before point; t means current buffer; | |
200 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
201 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
202 | REAL-BUFFER says what to do with standard output, as above, | |
203 | while STDERR-FILE says what to do with standard error in the child. | |
204 | STDERR-FILE may be nil (discard standard error output), | |
205 | t (mix it with ordinary output), or a file name string. | |
206 | ||
207 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
208 | Remaining arguments are strings passed as command arguments to PROGRAM. | |
209 | ||
a4feb144 RS |
210 | If executable PROGRAM can't be found as an executable, `call-process' |
211 | signals a Lisp error. `call-process' reports errors in execution of | |
212 | the program only through its return and output. | |
213 | ||
fdb82f93 PJ |
214 | If BUFFER is 0, `call-process' returns immediately with value nil. |
215 | Otherwise it waits for PROGRAM to terminate | |
216 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
217 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
218 | ||
219 | usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 220 | (nargs, args) |
80856e74 JB |
221 | int nargs; |
222 | register Lisp_Object *args; | |
223 | { | |
0aa2630f KS |
224 | Lisp_Object infile, buffer, current_dir, path; |
225 | int display_p; | |
80856e74 JB |
226 | int fd[2]; |
227 | int filefd; | |
228 | register int pid; | |
4da256b1 KS |
229 | #define CALLPROC_BUFFER_SIZE_MIN (16 * 1024) |
230 | #define CALLPROC_BUFFER_SIZE_MAX (4 * CALLPROC_BUFFER_SIZE_MIN) | |
231 | char buf[CALLPROC_BUFFER_SIZE_MAX]; | |
232 | int bufsize = CALLPROC_BUFFER_SIZE_MIN; | |
aed13378 | 233 | int count = SPECPDL_INDEX (); |
2d607244 | 234 | |
4d3b07fd KR |
235 | register const unsigned char **new_argv |
236 | = (const unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
80856e74 | 237 | struct buffer *old = current_buffer; |
39eaa782 RS |
238 | /* File to use for stderr in the child. |
239 | t means use same as standard output. */ | |
240 | Lisp_Object error_file; | |
7e6c2178 RS |
241 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
242 | char *outf, *tempfile; | |
243 | int outfilefd; | |
244 | #endif | |
80856e74 JB |
245 | #if 0 |
246 | int mask; | |
247 | #endif | |
32d08644 KH |
248 | struct coding_system process_coding; /* coding-system of process output */ |
249 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
250 | /* Set to the return value of Ffind_operation_coding_system. */ |
251 | Lisp_Object coding_systems; | |
252 | ||
253 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
254 | coding_systems = Qt; | |
32d08644 | 255 | |
b7826503 | 256 | CHECK_STRING (args[0]); |
80856e74 | 257 | |
39eaa782 RS |
258 | error_file = Qt; |
259 | ||
7e6c2178 RS |
260 | #ifndef subprocesses |
261 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
177c0ea7 | 262 | if (nargs >= 3 |
09ffb8b5 | 263 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
264 | error ("Operating system cannot handle asynchronous subprocesses"); |
265 | #endif /* subprocesses */ | |
266 | ||
09494912 | 267 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
268 | { |
269 | Lisp_Object val, *args2; | |
32d08644 KH |
270 | int i; |
271 | ||
272 | /* If arguments are supplied, we may have to encode them. */ | |
273 | if (nargs >= 5) | |
274 | { | |
30d57b8e | 275 | int must_encode = 0; |
6e50da0a | 276 | Lisp_Object coding_attrs; |
30d57b8e | 277 | |
e7c1c20e | 278 | for (i = 4; i < nargs; i++) |
b7826503 | 279 | CHECK_STRING (args[i]); |
e7c1c20e | 280 | |
a2286b5c | 281 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
282 | if (STRING_MULTIBYTE (args[i])) |
283 | must_encode = 1; | |
284 | ||
beacaab3 KH |
285 | if (!NILP (Vcoding_system_for_write)) |
286 | val = Vcoding_system_for_write; | |
30d57b8e | 287 | else if (! must_encode) |
beacaab3 KH |
288 | val = Qnil; |
289 | else | |
32d08644 KH |
290 | { |
291 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
292 | args2[0] = Qcall_process; | |
293 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 294 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 295 | if (CONSP (coding_systems)) |
70949dac | 296 | val = XCDR (coding_systems); |
776b95cb | 297 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 298 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
299 | else |
300 | val = Qnil; | |
32d08644 | 301 | } |
b4413d9f | 302 | val = coding_inherit_eol_type (val, Qnil); |
32d08644 | 303 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); |
6e50da0a KH |
304 | coding_attrs = CODING_ID_ATTRS (argument_coding.id); |
305 | if (NILP (CODING_ATTR_ASCII_COMPAT (coding_attrs))) | |
306 | { | |
307 | /* We should not use an ASCII incompatible coding system. */ | |
308 | val = raw_text_coding_system (val); | |
309 | setup_coding_system (val, &argument_coding); | |
310 | } | |
32d08644 | 311 | } |
32d08644 KH |
312 | } |
313 | ||
e576cab4 JB |
314 | if (nargs >= 2 && ! NILP (args[1])) |
315 | { | |
316 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
b7826503 | 317 | CHECK_STRING (infile); |
e576cab4 | 318 | } |
80856e74 | 319 | else |
5437e9f9 | 320 | infile = build_string (NULL_DEVICE); |
80856e74 | 321 | |
e576cab4 JB |
322 | if (nargs >= 3) |
323 | { | |
39eaa782 RS |
324 | buffer = args[2]; |
325 | ||
326 | /* If BUFFER is a list, its meaning is | |
327 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
328 | if (CONSP (buffer)) | |
329 | { | |
70949dac | 330 | if (CONSP (XCDR (buffer))) |
45be8a1e | 331 | { |
a9d4f28a | 332 | Lisp_Object stderr_file; |
70949dac | 333 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
334 | |
335 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
336 | error_file = stderr_file; | |
337 | else | |
338 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
339 | } | |
340 | ||
70949dac | 341 | buffer = XCAR (buffer); |
39eaa782 | 342 | } |
044512ed | 343 | |
39eaa782 RS |
344 | if (!(EQ (buffer, Qnil) |
345 | || EQ (buffer, Qt) | |
3ffde7d6 | 346 | || INTEGERP (buffer))) |
e576cab4 | 347 | { |
39eaa782 RS |
348 | Lisp_Object spec_buffer; |
349 | spec_buffer = buffer; | |
50fe359b | 350 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
351 | /* Mention the buffer name for a better error message. */ |
352 | if (NILP (buffer)) | |
b7826503 PJ |
353 | CHECK_BUFFER (spec_buffer); |
354 | CHECK_BUFFER (buffer); | |
e576cab4 JB |
355 | } |
356 | } | |
177c0ea7 | 357 | else |
e576cab4 | 358 | buffer = Qnil; |
80856e74 | 359 | |
58616e67 JB |
360 | /* Make sure that the child will be able to chdir to the current |
361 | buffer's current directory, or its unhandled equivalent. We | |
362 | can't just have the child check for an error when it does the | |
363 | chdir, since it's in a vfork. | |
364 | ||
365 | We have to GCPRO around this because Fexpand_file_name, | |
366 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
367 | might call a file name handling function. The argument list is | |
368 | protected by the caller, so all we really have to worry about is | |
369 | buffer. */ | |
370 | { | |
34b87689 | 371 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
58616e67 JB |
372 | |
373 | current_dir = current_buffer->directory; | |
374 | ||
34b87689 | 375 | GCPRO4 (infile, buffer, current_dir, error_file); |
58616e67 | 376 | |
ca319910 SM |
377 | current_dir = Funhandled_file_name_directory (current_dir); |
378 | if (NILP (current_dir)) | |
379 | /* If the file name handler says that current_dir is unreachable, use | |
380 | a sensible default. */ | |
381 | current_dir = build_string ("~/"); | |
382 | current_dir = expand_and_dir_to_file (current_dir, Qnil); | |
58616e67 JB |
383 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
384 | report_file_error ("Setting current directory", | |
385 | Fcons (current_buffer->directory, Qnil)); | |
386 | ||
34b87689 KH |
387 | if (STRING_MULTIBYTE (infile)) |
388 | infile = ENCODE_FILE (infile); | |
389 | if (STRING_MULTIBYTE (current_dir)) | |
390 | current_dir = ENCODE_FILE (current_dir); | |
391 | if (STRINGP (error_file) && STRING_MULTIBYTE (error_file)) | |
392 | error_file = ENCODE_FILE (error_file); | |
58616e67 JB |
393 | UNGCPRO; |
394 | } | |
395 | ||
0aa2630f | 396 | display_p = INTERACTIVE && nargs >= 4 && !NILP (args[3]); |
80856e74 | 397 | |
d5db4077 | 398 | filefd = emacs_open (SDATA (infile), O_RDONLY, 0); |
80856e74 JB |
399 | if (filefd < 0) |
400 | { | |
34b87689 | 401 | infile = DECODE_FILE (infile); |
e576cab4 | 402 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
403 | } |
404 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
405 | { |
406 | struct gcpro gcpro1; | |
407 | ||
408 | GCPRO1 (current_dir); | |
5c150961 | 409 | openp (Vexec_path, args[0], Vexec_suffixes, &path, make_number (X_OK)); |
c52b0b34 KH |
410 | UNGCPRO; |
411 | } | |
012c6fcb | 412 | if (NILP (path)) |
80856e74 | 413 | { |
68c45bf0 | 414 | emacs_close (filefd); |
80856e74 JB |
415 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
416 | } | |
8ee8f447 RS |
417 | |
418 | /* If program file name starts with /: for quoting a magic name, | |
419 | discard that. */ | |
420 | if (SBYTES (path) > 2 && SREF (path, 0) == '/' | |
421 | && SREF (path, 1) == ':') | |
422 | path = Fsubstring (path, make_number (2), Qnil); | |
423 | ||
d5db4077 | 424 | new_argv[0] = SDATA (path); |
c364e618 KH |
425 | if (nargs > 4) |
426 | { | |
427 | register int i; | |
c5bfa12b | 428 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 429 | |
c5bfa12b KH |
430 | GCPRO3 (infile, buffer, current_dir); |
431 | argument_coding.dst_multibyte = 0; | |
432 | for (i = 4; i < nargs; i++) | |
c364e618 | 433 | { |
c5bfa12b KH |
434 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
435 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
91183bfd KH |
436 | /* We must encode this argument. */ |
437 | args[i] = encode_coding_string (&argument_coding, args[i], 1); | |
d5db4077 | 438 | new_argv[i - 3] = SDATA (args[i]); |
c364e618 | 439 | } |
c5bfa12b | 440 | UNGCPRO; |
db54baaa | 441 | new_argv[nargs - 3] = 0; |
c364e618 | 442 | } |
db54baaa KH |
443 | else |
444 | new_argv[1] = 0; | |
80856e74 | 445 | |
7e6c2178 | 446 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 447 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
448 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
449 | else | |
450 | { | |
451 | tempfile = alloca (20); | |
452 | *tempfile = '\0'; | |
453 | } | |
454 | dostounix_filename (tempfile); | |
177c0ea7 | 455 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') |
7e6c2178 RS |
456 | strcat (tempfile, "/"); |
457 | strcat (tempfile, "detmp.XXX"); | |
458 | mktemp (tempfile); | |
459 | ||
460 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
461 | if (outfilefd < 0) | |
462 | { | |
68c45bf0 | 463 | emacs_close (filefd); |
6f89d28a MB |
464 | report_file_error ("Opening process output file", |
465 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 466 | } |
6f89d28a | 467 | fd[0] = filefd; |
2610078a | 468 | fd[1] = outfilefd; |
6f89d28a | 469 | #endif /* MSDOS */ |
7e6c2178 | 470 | |
d50d3dc8 | 471 | if (INTEGERP (buffer)) |
68c45bf0 | 472 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
473 | else |
474 | { | |
7e6c2178 | 475 | #ifndef MSDOS |
db92b288 GM |
476 | errno = 0; |
477 | if (pipe (fd) == -1) | |
478 | { | |
479 | emacs_close (filefd); | |
480 | report_file_error ("Creating process pipe", Qnil); | |
481 | } | |
7e6c2178 | 482 | #endif |
80856e74 JB |
483 | #if 0 |
484 | /* Replaced by close_process_descs */ | |
485 | set_exclusive_use (fd[0]); | |
486 | #endif | |
487 | } | |
488 | ||
489 | { | |
490 | /* child_setup must clobber environ in systems with true vfork. | |
491 | Protect it from permanent change. */ | |
492 | register char **save_environ = environ; | |
493 | register int fd1 = fd[1]; | |
39eaa782 | 494 | int fd_error = fd1; |
80856e74 JB |
495 | |
496 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 497 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
498 | #endif |
499 | ||
500 | /* Record that we're about to create a synchronous process. */ | |
501 | synch_process_alive = 1; | |
502 | ||
5c03767e RS |
503 | /* These vars record information from process termination. |
504 | Clear them now before process can possibly terminate, | |
505 | to avoid timing error if process terminates soon. */ | |
506 | synch_process_death = 0; | |
507 | synch_process_retcode = 0; | |
6b61353c | 508 | synch_process_termsig = 0; |
5c03767e | 509 | |
39eaa782 | 510 | if (NILP (error_file)) |
68c45bf0 | 511 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
512 | else if (STRINGP (error_file)) |
513 | { | |
514 | #ifdef DOS_NT | |
d5db4077 | 515 | fd_error = emacs_open (SDATA (error_file), |
68c45bf0 PE |
516 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
517 | S_IREAD | S_IWRITE); | |
39eaa782 | 518 | #else /* not DOS_NT */ |
d5db4077 | 519 | fd_error = creat (SDATA (error_file), 0666); |
39eaa782 RS |
520 | #endif /* not DOS_NT */ |
521 | } | |
522 | ||
523 | if (fd_error < 0) | |
524 | { | |
68c45bf0 | 525 | emacs_close (filefd); |
6f89d28a | 526 | if (fd[0] != filefd) |
68c45bf0 | 527 | emacs_close (fd[0]); |
39eaa782 | 528 | if (fd1 >= 0) |
68c45bf0 | 529 | emacs_close (fd1); |
6f89d28a MB |
530 | #ifdef MSDOS |
531 | unlink (tempfile); | |
532 | #endif | |
34b87689 KH |
533 | if (NILP (error_file)) |
534 | error_file = build_string (NULL_DEVICE); | |
535 | else if (STRINGP (error_file)) | |
536 | error_file = DECODE_FILE (error_file); | |
537 | report_file_error ("Cannot redirect stderr", Fcons (error_file, Qnil)); | |
39eaa782 | 538 | } |
89e1ec1d | 539 | |
2610078a | 540 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 541 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
542 | exit status, not its PID, so we assign it to `synch_process_retcode' |
543 | below. */ | |
c17c4250 EZ |
544 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
545 | 0, current_dir); | |
39eaa782 | 546 | |
2610078a KH |
547 | /* Record that the synchronous process exited and note its |
548 | termination status. */ | |
549 | synch_process_alive = 0; | |
550 | synch_process_retcode = pid; | |
551 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 552 | { |
ca9c0567 | 553 | synchronize_system_messages_locale (); |
68c45bf0 PE |
554 | synch_process_death = strerror (errno); |
555 | } | |
2610078a | 556 | |
68c45bf0 | 557 | emacs_close (outfilefd); |
2610078a | 558 | if (fd_error != outfilefd) |
68c45bf0 | 559 | emacs_close (fd_error); |
2610078a | 560 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
561 | /* Since CRLF is converted to LF within `decode_coding', we can |
562 | always open a file with binary mode. */ | |
68c45bf0 | 563 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
564 | if (fd[0] < 0) |
565 | { | |
566 | unlink (tempfile); | |
68c45bf0 | 567 | emacs_close (filefd); |
2610078a KH |
568 | report_file_error ("Cannot re-open temporary file", Qnil); |
569 | } | |
570 | #else /* not MSDOS */ | |
bad95d8f | 571 | #ifdef WINDOWSNT |
2d607244 RS |
572 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
573 | 0, current_dir); | |
bad95d8f | 574 | #else /* not WINDOWSNT */ |
aba637ec KS |
575 | BLOCK_INPUT; |
576 | ||
80856e74 JB |
577 | pid = vfork (); |
578 | ||
579 | if (pid == 0) | |
580 | { | |
581 | if (fd[0] >= 0) | |
68c45bf0 | 582 | emacs_close (fd[0]); |
1e7963c7 RS |
583 | #ifdef HAVE_SETSID |
584 | setsid (); | |
585 | #endif | |
586 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
587 | setpgrp (); |
588 | #else | |
589 | setpgrp (pid, pid); | |
590 | #endif /* USG */ | |
2d607244 RS |
591 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
592 | 0, current_dir); | |
80856e74 | 593 | } |
aba637ec KS |
594 | |
595 | UNBLOCK_INPUT; | |
bad95d8f | 596 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
597 | |
598 | /* The MSDOS case did this already. */ | |
599 | if (fd_error >= 0) | |
68c45bf0 | 600 | emacs_close (fd_error); |
2610078a | 601 | #endif /* not MSDOS */ |
80856e74 | 602 | |
80856e74 JB |
603 | environ = save_environ; |
604 | ||
6b6e798b RS |
605 | /* Close most of our fd's, but not fd[0] |
606 | since we will use that to read input from. */ | |
68c45bf0 | 607 | emacs_close (filefd); |
799abb26 | 608 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 609 | emacs_close (fd1); |
80856e74 JB |
610 | } |
611 | ||
612 | if (pid < 0) | |
613 | { | |
6b6e798b | 614 | if (fd[0] >= 0) |
68c45bf0 | 615 | emacs_close (fd[0]); |
80856e74 JB |
616 | report_file_error ("Doing vfork", Qnil); |
617 | } | |
618 | ||
d50d3dc8 | 619 | if (INTEGERP (buffer)) |
80856e74 | 620 | { |
6b6e798b | 621 | if (fd[0] >= 0) |
68c45bf0 | 622 | emacs_close (fd[0]); |
80856e74 | 623 | #ifndef subprocesses |
e576cab4 JB |
624 | /* If Emacs has been built with asynchronous subprocess support, |
625 | we don't need to do this, I think because it will then have | |
626 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
627 | wait_without_blocking (); |
628 | #endif /* subprocesses */ | |
80856e74 JB |
629 | return Qnil; |
630 | } | |
631 | ||
6b6e798b | 632 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
633 | call_process_exited = 0; |
634 | ||
e39a993c | 635 | #if defined(MSDOS) |
7e6c2178 RS |
636 | /* MSDOS needs different cleanup information. */ |
637 | record_unwind_protect (call_process_cleanup, | |
638 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
639 | #else | |
80856e74 JB |
640 | record_unwind_protect (call_process_cleanup, |
641 | Fcons (make_number (fd[0]), make_number (pid))); | |
e39a993c | 642 | #endif /* not MSDOS */ |
80856e74 JB |
643 | |
644 | ||
d50d3dc8 | 645 | if (BUFFERP (buffer)) |
80856e74 JB |
646 | Fset_buffer (buffer); |
647 | ||
09494912 RS |
648 | if (NILP (buffer)) |
649 | { | |
650 | /* If BUFFER is nil, we must read process output once and then | |
651 | discard it, so setup coding system but with nil. */ | |
652 | setup_coding_system (Qnil, &process_coding); | |
653 | } | |
654 | else | |
655 | { | |
656 | Lisp_Object val, *args2; | |
657 | ||
658 | val = Qnil; | |
659 | if (!NILP (Vcoding_system_for_read)) | |
660 | val = Vcoding_system_for_read; | |
661 | else | |
662 | { | |
663 | if (EQ (coding_systems, Qt)) | |
664 | { | |
665 | int i; | |
666 | ||
667 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
668 | args2[0] = Qcall_process; | |
669 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
670 | coding_systems | |
671 | = Ffind_operation_coding_system (nargs + 1, args2); | |
672 | } | |
673 | if (CONSP (coding_systems)) | |
70949dac | 674 | val = XCAR (coding_systems); |
09494912 | 675 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 676 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
677 | else |
678 | val = Qnil; | |
679 | } | |
91183bfd | 680 | Fcheck_coding_system (val); |
09494912 RS |
681 | /* In unibyte mode, character code conversion should not take |
682 | place but EOL conversion should. So, setup raw-text or one | |
683 | of the subsidiary according to the information just setup. */ | |
684 | if (NILP (current_buffer->enable_multibyte_characters) | |
685 | && !NILP (val)) | |
91183bfd KH |
686 | val = raw_text_coding_system (val); |
687 | setup_coding_system (val, &process_coding); | |
09494912 RS |
688 | } |
689 | ||
80856e74 JB |
690 | immediate_quit = 1; |
691 | QUIT; | |
692 | ||
693 | { | |
694 | register int nread; | |
0ad477db | 695 | int first = 1; |
6e3bfbb2 | 696 | int total_read = 0; |
321fecde | 697 | int carryover = 0; |
0aa2630f | 698 | int display_on_the_fly = display_p; |
05b44e90 KH |
699 | struct coding_system saved_coding; |
700 | ||
701 | saved_coding = process_coding; | |
60558b19 | 702 | while (1) |
80856e74 | 703 | { |
60558b19 RS |
704 | /* Repeatedly read until we've filled as much as possible |
705 | of the buffer size we have. But don't read | |
8e6208c5 | 706 | less than 1024--save that for the next bufferful. */ |
321fecde | 707 | nread = carryover; |
60558b19 | 708 | while (nread < bufsize - 1024) |
00fb3e95 | 709 | { |
4da256b1 | 710 | int this_read = emacs_read (fd[0], buf + nread, |
68c45bf0 | 711 | bufsize - nread); |
60558b19 RS |
712 | |
713 | if (this_read < 0) | |
714 | goto give_up; | |
715 | ||
716 | if (this_read == 0) | |
7a7ab107 KH |
717 | { |
718 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
719 | break; | |
720 | } | |
60558b19 RS |
721 | |
722 | nread += this_read; | |
7a7ab107 | 723 | total_read += this_read; |
60558b19 | 724 | |
7a7ab107 KH |
725 | if (display_on_the_fly) |
726 | break; | |
727 | } | |
60558b19 RS |
728 | |
729 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 730 | immediate_quit = 0; |
177c0ea7 | 731 | |
012c6fcb | 732 | if (!NILP (buffer)) |
32d08644 | 733 | { |
bb4a3884 KH |
734 | if (NILP (current_buffer->enable_multibyte_characters) |
735 | && ! CODING_MAY_REQUIRE_DECODING (&process_coding)) | |
4da256b1 | 736 | insert_1_both (buf, nread, nread, 0, 1, 0); |
32d08644 KH |
737 | else |
738 | { /* We have to decode the input. */ | |
45d60801 | 739 | Lisp_Object curbuf; |
177c0ea7 | 740 | |
45d60801 KH |
741 | XSETBUFFER (curbuf, current_buffer); |
742 | decode_coding_c_string (&process_coding, buf, nread, | |
743 | curbuf); | |
7a7ab107 | 744 | if (display_on_the_fly |
91183bfd KH |
745 | && CODING_REQUIRE_DETECTION (&saved_coding) |
746 | && ! CODING_REQUIRE_DETECTION (&process_coding)) | |
7a7ab107 KH |
747 | { |
748 | /* We have detected some coding system. But, | |
749 | there's a possibility that the detection was | |
750 | done by insufficient data. So, we give up | |
751 | displaying on the fly. */ | |
91183bfd KH |
752 | if (process_coding.produced > 0) |
753 | del_range_2 (process_coding.dst_pos, | |
754 | process_coding.dst_pos_byte, | |
755 | process_coding.dst_pos | |
756 | + process_coding.produced_char, | |
757 | process_coding.dst_pos_byte | |
758 | + process_coding.produced, 0); | |
7a7ab107 KH |
759 | display_on_the_fly = 0; |
760 | process_coding = saved_coding; | |
761 | carryover = nread; | |
0aa2630f KS |
762 | /* This is to make the above condition always |
763 | fails in the future. */ | |
21d0467f KH |
764 | saved_coding.common_flags |
765 | &= ~CODING_REQUIRE_DETECTION_MASK; | |
7a7ab107 KH |
766 | continue; |
767 | } | |
177c0ea7 | 768 | |
ea99bcc1 KH |
769 | TEMP_SET_PT_BOTH (PT + process_coding.produced_char, |
770 | PT_BYTE + process_coding.produced); | |
54ab3d3b | 771 | carryover = process_coding.carryover_bytes; |
321fecde | 772 | if (carryover > 0) |
c5bfa12b KH |
773 | /* As CARRYOVER should not be that large, we had |
774 | better avoid overhead of bcopy. */ | |
45d60801 | 775 | BCOPY_SHORT (process_coding.carryover, buf, |
54ab3d3b | 776 | process_coding.carryover_bytes); |
32d08644 KH |
777 | } |
778 | } | |
c5bfa12b | 779 | |
321fecde | 780 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 781 | break; |
6e3bfbb2 | 782 | |
4da256b1 | 783 | #if (CALLPROC_BUFFER_SIZE_MIN != CALLPROC_BUFFER_SIZE_MAX) |
6e3bfbb2 | 784 | /* Make the buffer bigger as we continue to read more data, |
4da256b1 KS |
785 | but not past CALLPROC_BUFFER_SIZE_MAX. */ |
786 | if (bufsize < CALLPROC_BUFFER_SIZE_MAX && total_read > 32 * bufsize) | |
787 | if ((bufsize *= 2) > CALLPROC_BUFFER_SIZE_MAX) | |
788 | bufsize = CALLPROC_BUFFER_SIZE_MAX; | |
789 | #endif | |
6e3bfbb2 | 790 | |
0aa2630f | 791 | if (display_p) |
0ad477db RS |
792 | { |
793 | if (first) | |
794 | prepare_menu_bars (); | |
795 | first = 0; | |
3007ebfb | 796 | redisplay_preserve_echo_area (1); |
0aa2630f KS |
797 | /* This variable might have been set to 0 for code |
798 | detection. In that case, we set it back to 1 because | |
799 | we should have already detected a coding system. */ | |
800 | display_on_the_fly = 1; | |
0ad477db | 801 | } |
80856e74 JB |
802 | immediate_quit = 1; |
803 | QUIT; | |
804 | } | |
60558b19 | 805 | give_up: ; |
80856e74 | 806 | |
91183bfd KH |
807 | Vlast_coding_system_used = CODING_ID_NAME (process_coding.id); |
808 | /* If the caller required, let the buffer inherit the | |
809 | coding-system used to decode the process output. */ | |
810 | if (inherit_process_coding_system) | |
811 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
8f924df7 | 812 | make_number (total_read)); |
3b440bb5 EZ |
813 | } |
814 | ||
80856e74 JB |
815 | /* Wait for it to terminate, unless it already has. */ |
816 | wait_for_termination (pid); | |
817 | ||
818 | immediate_quit = 0; | |
819 | ||
820 | set_buffer_internal (old); | |
821 | ||
37d54121 RS |
822 | /* Don't kill any children that the subprocess may have left behind |
823 | when exiting. */ | |
824 | call_process_exited = 1; | |
825 | ||
80856e74 JB |
826 | unbind_to (count, Qnil); |
827 | ||
6b61353c KH |
828 | if (synch_process_termsig) |
829 | { | |
830 | char *signame; | |
831 | ||
832 | synchronize_system_messages_locale (); | |
833 | signame = strsignal (synch_process_termsig); | |
834 | ||
835 | if (signame == 0) | |
836 | signame = "unknown"; | |
837 | ||
838 | synch_process_death = signame; | |
839 | } | |
840 | ||
80856e74 | 841 | if (synch_process_death) |
68c45bf0 PE |
842 | return code_convert_string_norecord (build_string (synch_process_death), |
843 | Vlocale_coding_system, 0); | |
80856e74 JB |
844 | return make_number (synch_process_retcode); |
845 | } | |
846 | #endif | |
847 | \f | |
9fefd2ba | 848 | static Lisp_Object |
80856e74 JB |
849 | delete_temp_file (name) |
850 | Lisp_Object name; | |
851 | { | |
1a271e14 KR |
852 | /* Suppress jka-compr handling, etc. */ |
853 | int count = SPECPDL_INDEX (); | |
854 | specbind (intern ("file-name-handler-alist"), Qnil); | |
2e3dc201 | 855 | internal_delete_file (name); |
1a271e14 | 856 | unbind_to (count, Qnil); |
320695d8 | 857 | return Qnil; |
80856e74 JB |
858 | } |
859 | ||
860 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
fdb82f93 PJ |
861 | 3, MANY, 0, |
862 | doc: /* Send text from START to END to a synchronous process running PROGRAM. | |
863 | The remaining arguments are optional. | |
864 | Delete the text if fourth arg DELETE is non-nil. | |
865 | ||
866 | Insert output in BUFFER before point; t means current buffer; | |
867 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
868 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
869 | REAL-BUFFER says what to do with standard output, as above, | |
870 | while STDERR-FILE says what to do with standard error in the child. | |
871 | STDERR-FILE may be nil (discard standard error output), | |
872 | t (mix it with ordinary output), or a file name string. | |
873 | ||
874 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
875 | Remaining args are passed to PROGRAM at startup as command args. | |
876 | ||
ba9a5174 | 877 | If BUFFER is 0, `call-process-region' returns immediately with value nil. |
fdb82f93 PJ |
878 | Otherwise it waits for PROGRAM to terminate |
879 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
880 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
881 | ||
882 | usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 883 | (nargs, args) |
80856e74 JB |
884 | int nargs; |
885 | register Lisp_Object *args; | |
886 | { | |
39323a7e KH |
887 | struct gcpro gcpro1; |
888 | Lisp_Object filename_string; | |
889 | register Lisp_Object start, end; | |
aed13378 | 890 | int count = SPECPDL_INDEX (); |
08ee4e87 | 891 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 892 | Lisp_Object coding_systems; |
32d08644 KH |
893 | Lisp_Object val, *args2; |
894 | int i; | |
bad95d8f | 895 | #ifdef DOS_NT |
7e6c2178 | 896 | char *tempfile; |
7e6c2178 RS |
897 | char *outf = '\0'; |
898 | ||
8a52365c EZ |
899 | if ((outf = egetenv ("TMPDIR")) |
900 | || (outf = egetenv ("TMP")) | |
901 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
902 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
903 | else | |
904 | { | |
905 | tempfile = alloca (20); | |
906 | *tempfile = '\0'; | |
907 | } | |
0774fcf8 | 908 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 909 | strcat (tempfile, "/"); |
5711b547 RS |
910 | if ('/' == DIRECTORY_SEP) |
911 | dostounix_filename (tempfile); | |
912 | else | |
913 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
914 | #ifdef WINDOWSNT |
915 | strcat (tempfile, "emXXXXXX"); | |
916 | #else | |
7e6c2178 | 917 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 918 | #endif |
bad95d8f | 919 | #else /* not DOS_NT */ |
d5db4077 KR |
920 | char *tempfile = (char *) alloca (SBYTES (Vtemp_file_name_pattern) + 1); |
921 | bcopy (SDATA (Vtemp_file_name_pattern), tempfile, | |
922 | SBYTES (Vtemp_file_name_pattern) + 1); | |
bad95d8f | 923 | #endif /* not DOS_NT */ |
7e6c2178 | 924 | |
09494912 RS |
925 | coding_systems = Qt; |
926 | ||
1ddc85a4 DL |
927 | #ifdef HAVE_MKSTEMP |
928 | { | |
d277f1f7 YM |
929 | int fd; |
930 | ||
931 | BLOCK_INPUT; | |
932 | fd = mkstemp (tempfile); | |
933 | UNBLOCK_INPUT; | |
1ddc85a4 DL |
934 | if (fd == -1) |
935 | report_file_error ("Failed to open temporary file", | |
936 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
937 | else | |
938 | close (fd); | |
939 | } | |
940 | #else | |
80856e74 | 941 | mktemp (tempfile); |
1ddc85a4 | 942 | #endif |
80856e74 JB |
943 | |
944 | filename_string = build_string (tempfile); | |
39323a7e | 945 | GCPRO1 (filename_string); |
80856e74 JB |
946 | start = args[0]; |
947 | end = args[1]; | |
32d08644 | 948 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
949 | if (!NILP (Vcoding_system_for_write)) |
950 | val = Vcoding_system_for_write; | |
951 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
952 | val = Qnil; |
953 | else | |
beacaab3 | 954 | { |
91489411 RS |
955 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
956 | args2[0] = Qcall_process_region; | |
957 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
958 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
959 | if (CONSP (coding_systems)) | |
70949dac | 960 | val = XCDR (coding_systems); |
91489411 | 961 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 962 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 963 | else |
91489411 | 964 | val = Qnil; |
beacaab3 | 965 | } |
32d08644 | 966 | |
168afdaa | 967 | { |
aed13378 | 968 | int count1 = SPECPDL_INDEX (); |
168afdaa RS |
969 | |
970 | specbind (intern ("coding-system-for-write"), val); | |
bb951f0e KR |
971 | /* POSIX lets mk[s]temp use "."; don't invoke jka-compr if we |
972 | happen to get a ".Z" suffix. */ | |
973 | specbind (intern ("file-name-handler-alist"), Qnil); | |
168afdaa RS |
974 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); |
975 | ||
976 | unbind_to (count1, Qnil); | |
977 | } | |
91489411 | 978 | |
177c0ea7 | 979 | /* Note that Fcall_process takes care of binding |
91489411 | 980 | coding-system-for-read. */ |
093650fe | 981 | |
80856e74 JB |
982 | record_unwind_protect (delete_temp_file, filename_string); |
983 | ||
edf496dd | 984 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
985 | Fdelete_region (start, end); |
986 | ||
edf496dd KH |
987 | if (nargs > 3) |
988 | { | |
989 | args += 2; | |
990 | nargs -= 2; | |
991 | } | |
992 | else | |
993 | { | |
994 | args[0] = args[2]; | |
995 | nargs = 2; | |
996 | } | |
997 | args[1] = filename_string; | |
80856e74 | 998 | |
edf496dd | 999 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
1000 | } |
1001 | \f | |
1002 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
1003 | ||
dfcf069d AS |
1004 | static int relocate_fd (); |
1005 | ||
5990851d KL |
1006 | static char ** |
1007 | add_env (char **env, char **new_env, char *string) | |
1008 | { | |
1009 | char **ep; | |
1010 | int ok = 1; | |
1011 | if (string == NULL) | |
1012 | return new_env; | |
1013 | ||
1014 | /* See if this string duplicates any string already in the env. | |
1015 | If so, don't put it in. | |
1016 | When an env var has multiple definitions, | |
1017 | we keep the definition that comes first in process-environment. */ | |
1018 | for (ep = env; ok && ep != new_env; ep++) | |
1019 | { | |
1020 | char *p = *ep, *q = string; | |
1021 | while (ok) | |
1022 | { | |
1023 | if (*q != *p) | |
1024 | break; | |
1025 | if (*q == 0) | |
1026 | /* The string is a lone variable name; keep it for now, we | |
1027 | will remove it later. It is a placeholder for a | |
1028 | variable that is not to be included in the environment. */ | |
1029 | break; | |
1030 | if (*q == '=') | |
1031 | ok = 0; | |
1032 | p++, q++; | |
1033 | } | |
1034 | } | |
1035 | if (ok) | |
1036 | *new_env++ = string; | |
1037 | return new_env; | |
1038 | } | |
1039 | ||
80856e74 JB |
1040 | /* This is the last thing run in a newly forked inferior |
1041 | either synchronous or asynchronous. | |
1042 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1043 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1044 | then exec another program based on new_argv. | |
1045 | ||
1046 | This function may change environ for the superior process. | |
1047 | Therefore, the superior process must save and restore the value | |
1048 | of environ around the vfork and the call to this function. | |
1049 | ||
80856e74 | 1050 | SET_PGRP is nonzero if we should put the subprocess into a separate |
177c0ea7 | 1051 | process group. |
e576cab4 JB |
1052 | |
1053 | CURRENT_DIR is an elisp string giving the path of the current | |
1054 | directory the subprocess should have. Since we can't really signal | |
1055 | a decent error from within the child, this should be verified as an | |
1056 | executable directory by the parent. */ | |
80856e74 | 1057 | |
dfcf069d | 1058 | int |
e576cab4 | 1059 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1060 | int in, out, err; |
1061 | register char **new_argv; | |
80856e74 | 1062 | int set_pgrp; |
e576cab4 | 1063 | Lisp_Object current_dir; |
80856e74 | 1064 | { |
e576cab4 | 1065 | char **env; |
7fcf7f05 | 1066 | char *pwd_var; |
bad95d8f RS |
1067 | #ifdef WINDOWSNT |
1068 | int cpid; | |
4252a4bd | 1069 | HANDLE handles[3]; |
bad95d8f | 1070 | #endif /* WINDOWSNT */ |
e576cab4 | 1071 | |
33abe2d9 | 1072 | int pid = getpid (); |
80856e74 | 1073 | |
68d10241 | 1074 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 | 1075 | { |
31ade731 | 1076 | extern EMACS_INT emacs_priority; |
4f0b9d49 | 1077 | |
68d10241 RS |
1078 | if (emacs_priority < 0) |
1079 | nice (- emacs_priority); | |
4f0b9d49 | 1080 | } |
5b633aeb | 1081 | #endif |
80856e74 JB |
1082 | |
1083 | #ifdef subprocesses | |
1084 | /* Close Emacs's descriptors that this process should not have. */ | |
1085 | close_process_descs (); | |
1086 | #endif | |
c17c4250 EZ |
1087 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1088 | we will lose if we call close_load_descs here. */ | |
1089 | #ifndef DOS_NT | |
4458cebe | 1090 | close_load_descs (); |
c17c4250 | 1091 | #endif |
80856e74 JB |
1092 | |
1093 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1094 | that do not have true vfork or that have true (stack) alloca. | |
caa01fe0 GM |
1095 | If using vfork and C_ALLOCA (when Emacs used to include |
1096 | src/alloca.c) it is safe because that changes the superior's | |
1097 | static variables as if the superior had done alloca and will be | |
1098 | cleaned up in the usual way. */ | |
e576cab4 | 1099 | { |
7fcf7f05 | 1100 | register char *temp; |
e576cab4 | 1101 | register int i; |
77d78be1 | 1102 | |
d5db4077 | 1103 | i = SBYTES (current_dir); |
16425c4a EZ |
1104 | #ifdef MSDOS |
1105 | /* MSDOS must have all environment variables malloc'ed, because | |
1106 | low-level libc functions that launch subsidiary processes rely | |
1107 | on that. */ | |
1108 | pwd_var = (char *) xmalloc (i + 6); | |
1109 | #else | |
7fcf7f05 | 1110 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1111 | #endif |
7fcf7f05 RS |
1112 | temp = pwd_var + 4; |
1113 | bcopy ("PWD=", pwd_var, 4); | |
d5db4077 | 1114 | bcopy (SDATA (current_dir), temp, i); |
bad95d8f | 1115 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1116 | temp[i] = 0; |
1117 | ||
c17c4250 | 1118 | #ifndef DOS_NT |
e576cab4 JB |
1119 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1120 | the callers check the current directory before forking, this | |
1121 | should only return an error if the directory's permissions | |
1122 | are changed between the check and this chdir, but we should | |
1123 | at least check. */ | |
1124 | if (chdir (temp) < 0) | |
20b25e46 | 1125 | _exit (errno); |
b4c7684c | 1126 | #endif |
7fcf7f05 | 1127 | |
c17c4250 EZ |
1128 | #ifdef DOS_NT |
1129 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1130 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1131 | { | |
1132 | temp += 2; | |
1133 | i -= 2; | |
1134 | } | |
1135 | #endif | |
1136 | ||
7fcf7f05 | 1137 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1138 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1139 | temp[--i] = 0; |
e576cab4 | 1140 | } |
80856e74 | 1141 | |
5990851d | 1142 | /* Set `env' to a vector of the strings in the environment. */ |
80856e74 JB |
1143 | { |
1144 | register Lisp_Object tem; | |
1145 | register char **new_env; | |
5990851d | 1146 | char **p, **q; |
80856e74 | 1147 | register int new_length; |
d2bb6598 | 1148 | Lisp_Object display = Qnil; |
de87fb59 | 1149 | |
80856e74 | 1150 | new_length = 0; |
f105f403 | 1151 | |
80856e74 | 1152 | for (tem = Vprocess_environment; |
5990851d KL |
1153 | CONSP (tem) && STRINGP (XCAR (tem)); |
1154 | tem = XCDR (tem)) | |
d2bb6598 SM |
1155 | { |
1156 | if (strncmp (SDATA (XCAR (tem)), "DISPLAY", 7) == 0 | |
1157 | && (SDATA (XCAR (tem)) [7] == '\0' | |
1158 | || SDATA (XCAR (tem)) [7] == '=')) | |
1159 | /* DISPLAY is specified in process-environment. */ | |
1160 | display = Qt; | |
1161 | new_length++; | |
1162 | } | |
de87fb59 | 1163 | |
d2bb6598 SM |
1164 | /* If not provided yet, use the frame's DISPLAY. */ |
1165 | if (NILP (display)) | |
1166 | { | |
1167 | Lisp_Object tmp = Fframe_parameter (selected_frame, Qdisplay); | |
1168 | if (!STRINGP (tmp) && CONSP (Vinitial_environment)) | |
1169 | /* If still not found, Look for DISPLAY in Vinitial_environment. */ | |
1170 | tmp = Fgetenv_internal (build_string ("DISPLAY"), | |
1171 | Vinitial_environment); | |
1172 | if (STRINGP (tmp)) | |
1173 | { | |
1174 | display = tmp; | |
1175 | new_length++; | |
1176 | } | |
1177 | } | |
80856e74 | 1178 | |
7fcf7f05 RS |
1179 | /* new_length + 2 to include PWD and terminating 0. */ |
1180 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
7fcf7f05 RS |
1181 | /* If we have a PWD envvar, pass one down, |
1182 | but with corrected value. */ | |
a13f8f50 | 1183 | if (egetenv ("PWD")) |
7fcf7f05 | 1184 | *new_env++ = pwd_var; |
5990851d | 1185 | |
6b8e474c | 1186 | if (STRINGP (display)) |
de87fb59 DN |
1187 | { |
1188 | int vlen = strlen ("DISPLAY=") + strlen (SDATA (display)) + 1; | |
1189 | char *vdata = (char *) alloca (vlen); | |
1190 | strcpy (vdata, "DISPLAY="); | |
1191 | strcat (vdata, SDATA (display)); | |
1192 | new_env = add_env (env, new_env, vdata); | |
1193 | } | |
80856e74 | 1194 | |
5990851d | 1195 | /* Overrides. */ |
80856e74 | 1196 | for (tem = Vprocess_environment; |
70949dac KR |
1197 | CONSP (tem) && STRINGP (XCAR (tem)); |
1198 | tem = XCDR (tem)) | |
5990851d | 1199 | new_env = add_env (env, new_env, SDATA (XCAR (tem))); |
d2bb6598 | 1200 | |
5990851d KL |
1201 | *new_env = 0; |
1202 | ||
1203 | /* Remove variable names without values. */ | |
1204 | p = q = env; | |
1205 | while (*p != 0) | |
cd9565ba | 1206 | { |
5990851d | 1207 | while (*q != 0 && strchr (*q, '=') == NULL) |
1baf6db9 | 1208 | q++; |
5990851d KL |
1209 | *p = *q++; |
1210 | if (*p != 0) | |
1211 | p++; | |
cd9565ba | 1212 | } |
80856e74 | 1213 | } |
de87fb59 DN |
1214 | |
1215 | ||
bad95d8f RS |
1216 | #ifdef WINDOWSNT |
1217 | prepare_standard_handles (in, out, err, handles); | |
d5db4077 | 1218 | set_process_dir (SDATA (current_dir)); |
bad95d8f | 1219 | #else /* not WINDOWSNT */ |
426b37ae JB |
1220 | /* Make sure that in, out, and err are not actually already in |
1221 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1222 | started with its standard in, out, or error closed, as might |
426b37ae | 1223 | happen under X. */ |
f29f9e4a RS |
1224 | { |
1225 | int oin = in, oout = out; | |
1226 | ||
1227 | /* We have to avoid relocating the same descriptor twice! */ | |
1228 | ||
1229 | in = relocate_fd (in, 3); | |
1230 | ||
1231 | if (out == oin) | |
1232 | out = in; | |
1233 | else | |
3e9367e7 | 1234 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1235 | |
1236 | if (err == oin) | |
1237 | err = in; | |
1238 | else if (err == oout) | |
1239 | err = out; | |
1240 | else | |
3e9367e7 | 1241 | err = relocate_fd (err, 3); |
f29f9e4a | 1242 | } |
426b37ae | 1243 | |
c17c4250 | 1244 | #ifndef MSDOS |
68c45bf0 PE |
1245 | emacs_close (0); |
1246 | emacs_close (1); | |
1247 | emacs_close (2); | |
80856e74 JB |
1248 | |
1249 | dup2 (in, 0); | |
1250 | dup2 (out, 1); | |
1251 | dup2 (err, 2); | |
68c45bf0 PE |
1252 | emacs_close (in); |
1253 | emacs_close (out); | |
1254 | emacs_close (err); | |
c17c4250 | 1255 | #endif /* not MSDOS */ |
bad95d8f | 1256 | #endif /* not WINDOWSNT */ |
80856e74 | 1257 | |
6b2cd868 | 1258 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1259 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1260 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1261 | #endif |
e576cab4 JB |
1262 | #else |
1263 | setpgrp (pid, pid); | |
1264 | #endif /* USG */ | |
a129418f RS |
1265 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1266 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 | 1267 | |
c17c4250 EZ |
1268 | #ifdef MSDOS |
1269 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
a3f0666f | 1270 | xfree (pwd_var); |
c17c4250 EZ |
1271 | if (pid == -1) |
1272 | /* An error occurred while trying to run the subprocess. */ | |
1273 | report_file_error ("Spawning child process", Qnil); | |
1274 | return pid; | |
1275 | #else /* not MSDOS */ | |
bad95d8f RS |
1276 | #ifdef WINDOWSNT |
1277 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1278 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1279 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1280 | if (cpid == -1) |
1281 | /* An error occurred while trying to spawn the process. */ | |
1282 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1283 | return cpid; |
1284 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1285 | /* execvp does not accept an environment arg so the only way |
1286 | to pass this environment is to set environ. Our caller | |
1287 | is responsible for restoring the ambient value of environ. */ | |
1288 | environ = env; | |
1289 | execvp (new_argv[0], new_argv); | |
1290 | ||
68c45bf0 PE |
1291 | emacs_write (1, "Can't exec program: ", 20); |
1292 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1293 | emacs_write (1, "\n", 1); | |
80856e74 | 1294 | _exit (1); |
bad95d8f | 1295 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1296 | #endif /* not MSDOS */ |
80856e74 JB |
1297 | } |
1298 | ||
a3833dfe | 1299 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1300 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1301 | static int |
a3833dfe KH |
1302 | relocate_fd (fd, minfd) |
1303 | int fd, minfd; | |
426b37ae | 1304 | { |
a3833dfe | 1305 | if (fd >= minfd) |
426b37ae JB |
1306 | return fd; |
1307 | else | |
1308 | { | |
1309 | int new = dup (fd); | |
1310 | if (new == -1) | |
1311 | { | |
20c018a0 | 1312 | char *message1 = "Error while setting up child: "; |
826c56ac | 1313 | char *errmessage = strerror (errno); |
20c018a0 | 1314 | char *message2 = "\n"; |
68c45bf0 PE |
1315 | emacs_write (2, message1, strlen (message1)); |
1316 | emacs_write (2, errmessage, strlen (errmessage)); | |
1317 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1318 | _exit (1); |
1319 | } | |
1320 | /* Note that we hold the original FD open while we recurse, | |
1321 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1322 | new = relocate_fd (new, minfd); |
68c45bf0 | 1323 | emacs_close (fd); |
426b37ae JB |
1324 | return new; |
1325 | } | |
1326 | } | |
1327 | ||
012c6fcb | 1328 | static int |
db699fc6 | 1329 | getenv_internal_1 (var, varlen, value, valuelen, env) |
012c6fcb JA |
1330 | char *var; |
1331 | int varlen; | |
1332 | char **value; | |
1333 | int *valuelen; | |
db699fc6 | 1334 | Lisp_Object env; |
012c6fcb | 1335 | { |
db699fc6 | 1336 | for (; CONSP (env); env = XCDR (env)) |
012c6fcb | 1337 | { |
db699fc6 | 1338 | Lisp_Object entry = XCAR (env); |
d50d3dc8 | 1339 | if (STRINGP (entry) |
db699fc6 | 1340 | && SBYTES (entry) >= varlen |
bad95d8f RS |
1341 | #ifdef WINDOWSNT |
1342 | /* NT environment variables are case insensitive. */ | |
d5db4077 | 1343 | && ! strnicmp (SDATA (entry), var, varlen) |
bad95d8f | 1344 | #else /* not WINDOWSNT */ |
d5db4077 | 1345 | && ! bcmp (SDATA (entry), var, varlen) |
bad95d8f | 1346 | #endif /* not WINDOWSNT */ |
a9971c6d | 1347 | ) |
012c6fcb | 1348 | { |
db699fc6 SM |
1349 | if (SBYTES (entry) > varlen && SREF (entry, varlen) == '=') |
1350 | { | |
1351 | *value = (char *) SDATA (entry) + (varlen + 1); | |
1352 | *valuelen = SBYTES (entry) - (varlen + 1); | |
1353 | return 1; | |
1354 | } | |
1355 | else if (SBYTES (entry) == varlen) | |
1356 | { | |
1357 | /* Lone variable names in Vprocess_environment mean that | |
1358 | variable should be removed from the environment. */ | |
1359 | *value = NULL; | |
1360 | return 1; | |
1361 | } | |
1362 | } | |
1363 | } | |
1364 | return 0; | |
1365 | } | |
1366 | ||
012c6fcb | 1367 | static int |
da8e8fc1 | 1368 | getenv_internal (var, varlen, value, valuelen, frame) |
012c6fcb JA |
1369 | char *var; |
1370 | int varlen; | |
1371 | char **value; | |
1372 | int *valuelen; | |
da8e8fc1 | 1373 | Lisp_Object frame; |
012c6fcb | 1374 | { |
d2bb6598 SM |
1375 | /* Try to find VAR in Vprocess_environment first. */ |
1376 | if (getenv_internal_1 (var, varlen, value, valuelen, | |
1377 | Vprocess_environment)) | |
1378 | return *value ? 1 : 0; | |
f105f403 | 1379 | |
d2bb6598 | 1380 | /* For DISPLAY try to get the values from the frame or the initial env. */ |
de87fb59 | 1381 | if (strcmp (var, "DISPLAY") == 0) |
d2bb6598 SM |
1382 | { |
1383 | Lisp_Object display | |
1384 | = Fframe_parameter (NILP (frame) ? selected_frame : frame, Qdisplay); | |
1385 | if (STRINGP (display)) | |
1386 | { | |
de87fb59 DN |
1387 | *value = (char *) SDATA (display); |
1388 | *valuelen = SBYTES (display); | |
012c6fcb JA |
1389 | return 1; |
1390 | } | |
d2bb6598 SM |
1391 | /* If still not found, Look for DISPLAY in Vinitial_environment. */ |
1392 | if (getenv_internal_1 (var, varlen, value, valuelen, | |
1393 | Vinitial_environment)) | |
1394 | return *value ? 1 : 0; | |
012c6fcb JA |
1395 | } |
1396 | ||
1397 | return 0; | |
1398 | } | |
1399 | ||
f105f403 | 1400 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 2, 0, |
5990851d KL |
1401 | doc: /* Get the value of environment variable VARIABLE. |
1402 | VARIABLE should be a string. Value is nil if VARIABLE is undefined in | |
1403 | the environment. Otherwise, value is a string. | |
f105f403 | 1404 | |
a13f8f50 KL |
1405 | This function searches `process-environment' for VARIABLE. If it is |
1406 | not found there, then it continues the search in the environment list | |
1407 | of the selected frame. | |
5990851d | 1408 | |
db699fc6 SM |
1409 | If optional parameter ENV is a list, then search this list instead of |
1410 | `process-environment', and return t when encountering a negative entry. | |
1411 | ||
1412 | If it is a frame, then this function will ignore `process-environment' and | |
1413 | will simply look up the variable in that frame's environment. */) | |
1414 | (variable, env) | |
1415 | Lisp_Object variable, env; | |
012c6fcb JA |
1416 | { |
1417 | char *value; | |
1418 | int valuelen; | |
1419 | ||
5990851d | 1420 | CHECK_STRING (variable); |
db699fc6 SM |
1421 | if (CONSP (env)) |
1422 | { | |
1423 | if (getenv_internal_1 (SDATA (variable), SBYTES (variable), | |
1424 | &value, &valuelen, env)) | |
1425 | return value ? make_string (value, valuelen) : Qt; | |
1426 | else | |
1427 | return Qnil; | |
1428 | } | |
1429 | else if (getenv_internal (SDATA (variable), SBYTES (variable), | |
d2bb6598 | 1430 | &value, &valuelen, env)) |
012c6fcb JA |
1431 | return make_string (value, valuelen); |
1432 | else | |
1433 | return Qnil; | |
1434 | } | |
1435 | ||
5990851d KL |
1436 | /* A version of getenv that consults the Lisp environment lists, |
1437 | easily callable from C. */ | |
012c6fcb JA |
1438 | char * |
1439 | egetenv (var) | |
e576cab4 | 1440 | char *var; |
012c6fcb JA |
1441 | { |
1442 | char *value; | |
1443 | int valuelen; | |
1444 | ||
f105f403 | 1445 | if (getenv_internal (var, strlen (var), &value, &valuelen, Qnil)) |
012c6fcb JA |
1446 | return value; |
1447 | else | |
1448 | return 0; | |
1449 | } | |
1450 | ||
80856e74 JB |
1451 | #endif /* not VMS */ |
1452 | \f | |
8de15d69 | 1453 | /* This is run before init_cmdargs. */ |
177c0ea7 | 1454 | |
dfcf069d | 1455 | void |
8de15d69 RS |
1456 | init_callproc_1 () |
1457 | { | |
1458 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1459 | char *doc_dir = egetenv ("EMACSDOC"); |
1460 | ||
8de15d69 | 1461 | Vdata_directory |
177c0ea7 | 1462 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1463 | : PATH_DATA)); |
35a2f4b8 KH |
1464 | Vdoc_directory |
1465 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1466 | : PATH_DOC)); | |
9453ea7b | 1467 | |
e576cab4 | 1468 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1469 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1470 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1471 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1472 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1473 | } |
1474 | ||
e17f7533 | 1475 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1476 | |
dfcf069d | 1477 | void |
8de15d69 RS |
1478 | init_callproc () |
1479 | { | |
1480 | char *data_dir = egetenv ("EMACSDATA"); | |
177c0ea7 | 1481 | |
8de15d69 RS |
1482 | register char * sh; |
1483 | Lisp_Object tempdir; | |
1484 | ||
9cc4fad5 | 1485 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1486 | { |
05630743 RS |
1487 | /* Add to the path the lib-src subdir of the installation dir. */ |
1488 | Lisp_Object tem; | |
1489 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1490 | Vinstallation_directory); | |
bad95d8f | 1491 | #ifndef DOS_NT |
1a6640ec | 1492 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc | 1493 | if (NILP (Fmember (tem, Vexec_path))) |
70ec1377 RS |
1494 | { |
1495 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); | |
1496 | Vexec_path = Fcons (tem, Vexec_path); | |
1497 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
1498 | } | |
177c0ea7 | 1499 | |
0fa248bc | 1500 | Vexec_directory = Ffile_name_as_directory (tem); |
bad95d8f | 1501 | #endif /* not DOS_NT */ |
8de15d69 | 1502 | |
e17f7533 RS |
1503 | /* Maybe use ../etc as well as ../lib-src. */ |
1504 | if (data_dir == 0) | |
1505 | { | |
1506 | tem = Fexpand_file_name (build_string ("etc"), | |
1507 | Vinstallation_directory); | |
1508 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1509 | } |
1510 | } | |
7e933683 RS |
1511 | |
1512 | /* Look for the files that should be in etc. We don't use | |
1513 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1514 | near the executable, and they are never in the build |
7e933683 RS |
1515 | directory when that's different from the source directory. |
1516 | ||
1517 | Instead, if these files are not in the nominal place, we try the | |
1518 | source directory. */ | |
1519 | if (data_dir == 0) | |
1520 | { | |
70ec1377 | 1521 | Lisp_Object tem, tem1, srcdir; |
7e933683 | 1522 | |
70ec1377 RS |
1523 | srcdir = Fexpand_file_name (build_string ("../src/"), |
1524 | build_string (PATH_DUMPLOADSEARCH)); | |
7e933683 RS |
1525 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); |
1526 | tem1 = Ffile_exists_p (tem); | |
70ec1377 | 1527 | if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1)) |
7e933683 | 1528 | { |
70ec1377 | 1529 | Lisp_Object newdir; |
7e933683 RS |
1530 | newdir = Fexpand_file_name (build_string ("../etc/"), |
1531 | build_string (PATH_DUMPLOADSEARCH)); | |
1532 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1533 | tem1 = Ffile_exists_p (tem); | |
1534 | if (!NILP (tem1)) | |
1535 | Vdata_directory = newdir; | |
1536 | } | |
1537 | } | |
80856e74 | 1538 | |
d883eb62 RS |
1539 | #ifndef CANNOT_DUMP |
1540 | if (initialized) | |
1541 | #endif | |
1542 | { | |
1543 | tempdir = Fdirectory_file_name (Vexec_directory); | |
d5db4077 | 1544 | if (access (SDATA (tempdir), 0) < 0) |
d883eb62 RS |
1545 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", |
1546 | Vexec_directory); | |
1547 | } | |
80856e74 | 1548 | |
e576cab4 | 1549 | tempdir = Fdirectory_file_name (Vdata_directory); |
d5db4077 | 1550 | if (access (SDATA (tempdir), 0) < 0) |
76d5c6cf RS |
1551 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1552 | Vdata_directory); | |
e576cab4 | 1553 | |
80856e74 JB |
1554 | #ifdef VMS |
1555 | Vshell_file_name = build_string ("*dcl*"); | |
1556 | #else | |
e576cab4 | 1557 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1558 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1559 | #endif | |
8abd035b RS |
1560 | |
1561 | #ifdef VMS | |
1562 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1563 | #else | |
1564 | if (getenv ("TMPDIR")) | |
1565 | { | |
1566 | char *dir = getenv ("TMPDIR"); | |
1567 | Vtemp_file_name_pattern | |
a13f8f50 KL |
1568 | = Fexpand_file_name (build_string ("emacsXXXXXX"), |
1569 | build_string (dir)); | |
8abd035b RS |
1570 | } |
1571 | else | |
1572 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1573 | #endif | |
63789758 | 1574 | |
40b49d4b JB |
1575 | #ifdef DOS_NT |
1576 | Vshared_game_score_directory = Qnil; | |
1577 | #else | |
63789758 RS |
1578 | Vshared_game_score_directory = build_string (PATH_GAME); |
1579 | if (NILP (Ffile_directory_p (Vshared_game_score_directory))) | |
1580 | Vshared_game_score_directory = Qnil; | |
40b49d4b | 1581 | #endif |
9fefd2ba JB |
1582 | } |
1583 | ||
dfcf069d | 1584 | void |
a13f8f50 | 1585 | set_initial_environment () |
9fefd2ba JB |
1586 | { |
1587 | register char **envp; | |
80856e74 JB |
1588 | #ifndef CANNOT_DUMP |
1589 | if (initialized) | |
1590 | #endif | |
a13f8f50 KL |
1591 | { |
1592 | for (envp = environ; *envp; envp++) | |
de87fb59 DN |
1593 | Vprocess_environment = Fcons (build_string (*envp), |
1594 | Vprocess_environment); | |
3c33c79a SM |
1595 | /* Ideally, the `copy' shouldn't be necessary, but it seems it's frequent |
1596 | to use `delete' and friends on process-environment. */ | |
1597 | Vinitial_environment = Fcopy_sequence (Vprocess_environment); | |
a13f8f50 | 1598 | } |
80856e74 JB |
1599 | } |
1600 | ||
dfcf069d | 1601 | void |
80856e74 JB |
1602 | syms_of_callproc () |
1603 | { | |
bad95d8f | 1604 | #ifdef DOS_NT |
093650fe RS |
1605 | Qbuffer_file_type = intern ("buffer-file-type"); |
1606 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1607 | #endif /* DOS_NT */ |
7e6c2178 | 1608 | |
80856e74 | 1609 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
fdb82f93 | 1610 | doc: /* *File name to load inferior shells from. |
b20b29be EZ |
1611 | Initialized from the SHELL environment variable, or to a system-dependent |
1612 | default if SHELL is not set. */); | |
80856e74 JB |
1613 | |
1614 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
fdb82f93 PJ |
1615 | doc: /* *List of directories to search programs to run in subprocesses. |
1616 | Each element is a string (directory name) or nil (try default directory). */); | |
80856e74 | 1617 | |
b81a1b72 | 1618 | DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, |
fdb82f93 PJ |
1619 | doc: /* *List of suffixes to try to find executable file names. |
1620 | Each element is a string. */); | |
33d5af99 | 1621 | Vexec_suffixes = Qnil; |
b81a1b72 | 1622 | |
80856e74 | 1623 | DEFVAR_LISP ("exec-directory", &Vexec_directory, |
fdb82f93 PJ |
1624 | doc: /* Directory for executables for Emacs to invoke. |
1625 | More generally, this includes any architecture-dependent files | |
1626 | that are built and installed from the Emacs distribution. */); | |
e576cab4 JB |
1627 | |
1628 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
fdb82f93 PJ |
1629 | doc: /* Directory of machine-independent files that come with GNU Emacs. |
1630 | These are files intended for Emacs to use while it runs. */); | |
80856e74 | 1631 | |
35a2f4b8 | 1632 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
fdb82f93 | 1633 | doc: /* Directory containing the DOC file that comes with GNU Emacs. |
ebf24b59 | 1634 | This is usually the same as `data-directory'. */); |
35a2f4b8 | 1635 | |
ed61592a | 1636 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
fdb82f93 PJ |
1637 | doc: /* For internal use by the build procedure only. |
1638 | This is the name of the directory in which the build procedure installed | |
ebf24b59 | 1639 | Emacs's info files; the default value for `Info-default-directory-list' |
fdb82f93 | 1640 | includes this. */); |
ed61592a JB |
1641 | Vconfigure_info_directory = build_string (PATH_INFO); |
1642 | ||
1e7ce61b | 1643 | DEFVAR_LISP ("shared-game-score-directory", &Vshared_game_score_directory, |
b065672a CW |
1644 | doc: /* Directory of score files for games which come with GNU Emacs. |
1645 | If this variable is nil, then Emacs is unable to use a shared directory. */); | |
40b49d4b JB |
1646 | #ifdef DOS_NT |
1647 | Vshared_game_score_directory = Qnil; | |
1648 | #else | |
63789758 | 1649 | Vshared_game_score_directory = build_string (PATH_GAME); |
40b49d4b | 1650 | #endif |
b065672a | 1651 | |
8abd035b | 1652 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
fdb82f93 PJ |
1653 | doc: /* Pattern for making names for temporary files. |
1654 | This is used by `call-process-region'. */); | |
0537ec48 | 1655 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1656 | |
6b8e474c SM |
1657 | DEFVAR_LISP ("initial-environment", &Vinitial_environment, |
1658 | doc: /* List of environment variables inherited from the parent process. | |
1659 | Each element should be a string of the form ENVVARNAME=VALUE. | |
1660 | The elements must normally be decoded (using `locale-coding-system') for use. */); | |
1661 | Vinitial_environment = Qnil; | |
1662 | ||
80856e74 | 1663 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
5990851d | 1664 | doc: /* List of overridden environment variables for subprocesses to inherit. |
fdb82f93 | 1665 | Each element should be a string of the form ENVVARNAME=VALUE. |
5990851d | 1666 | |
a13f8f50 KL |
1667 | Entries in this list take precedence to those in the frame-local |
1668 | environments. Therefore, let-binding `process-environment' is an easy | |
1669 | way to temporarily change the value of an environment variable, | |
1670 | irrespective of where it comes from. To use `process-environment' to | |
1671 | remove an environment variable, include only its name in the list, | |
1672 | without "=VALUE". | |
5990851d KL |
1673 | |
1674 | This variable is set to nil when Emacs starts. | |
1675 | ||
fdb82f93 PJ |
1676 | If multiple entries define the same variable, the first one always |
1677 | takes precedence. | |
5990851d | 1678 | |
776a24a1 | 1679 | Non-ASCII characters are encoded according to the initial value of |
5990851d KL |
1680 | `locale-coding-system', i.e. the elements must normally be decoded for |
1681 | use. | |
1682 | ||
776a24a1 | 1683 | See `setenv' and `getenv'. */); |
86f5ca04 | 1684 | Vprocess_environment = Qnil; |
80856e74 JB |
1685 | |
1686 | #ifndef VMS | |
1687 | defsubr (&Scall_process); | |
83fa009c | 1688 | defsubr (&Sgetenv_internal); |
986ffb24 | 1689 | #endif |
e576cab4 | 1690 | defsubr (&Scall_process_region); |
80856e74 | 1691 | } |
6b61353c KH |
1692 | |
1693 | /* arch-tag: 769b8045-1df7-4d2b-8968-e3fb49017f95 | |
1694 | (do not change this comment) */ |