Commit | Line | Data |
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80856e74 | 1 | /* Synchronous subprocess invocation for GNU Emacs. |
a0ecb2ac | 2 | Copyright (C) 1985,86,87,88,93,94,95,99, 2000,01,02,03,04 |
7bdba03c | 3 | Free Software Foundation, Inc. |
80856e74 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
826c56ac | 9 | the Free Software Foundation; either version 2, or (at your option) |
80856e74 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
80856e74 JB |
21 | |
22 | ||
68c45bf0 | 23 | #include <config.h> |
80856e74 | 24 | #include <signal.h> |
e576cab4 | 25 | #include <errno.h> |
565620a5 | 26 | #include <stdio.h> |
80856e74 | 27 | |
03695ace | 28 | #ifndef USE_CRT_DLL |
426b37ae | 29 | extern int errno; |
03695ace | 30 | #endif |
426b37ae | 31 | |
80856e74 JB |
32 | /* Define SIGCHLD as an alias for SIGCLD. */ |
33 | ||
34 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
35 | #define SIGCHLD SIGCLD | |
36 | #endif /* SIGCLD */ | |
37 | ||
38 | #include <sys/types.h> | |
88a64fef | 39 | |
3cbd6585 GM |
40 | #ifdef HAVE_UNISTD_H |
41 | #include <unistd.h> | |
42 | #endif | |
43 | ||
80856e74 | 44 | #include <sys/file.h> |
776a24a1 | 45 | #ifdef HAVE_FCNTL_H |
472e83fe | 46 | #define INCLUDED_FCNTL |
80856e74 JB |
47 | #include <fcntl.h> |
48 | #endif | |
49 | ||
bad95d8f RS |
50 | #ifdef WINDOWSNT |
51 | #define NOMINMAX | |
52 | #include <windows.h> | |
53 | #include <stdlib.h> /* for proper declaration of environ */ | |
54 | #include <fcntl.h> | |
489f9371 | 55 | #include "w32.h" |
bad95d8f RS |
56 | #define _P_NOWAIT 1 /* from process.h */ |
57 | #endif | |
58 | ||
7e6c2178 | 59 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
472e83fe | 60 | #define INCLUDED_FCNTL |
7e6c2178 RS |
61 | #include <fcntl.h> |
62 | #include <sys/stat.h> | |
63 | #include <sys/param.h> | |
64 | #include <errno.h> | |
65 | #endif /* MSDOS */ | |
66 | ||
80856e74 JB |
67 | #ifndef O_RDONLY |
68 | #define O_RDONLY 0 | |
69 | #endif | |
70 | ||
71 | #ifndef O_WRONLY | |
72 | #define O_WRONLY 1 | |
73 | #endif | |
74 | ||
75 | #include "lisp.h" | |
76 | #include "commands.h" | |
77 | #include "buffer.h" | |
32d08644 | 78 | #include "charset.h" |
edf496dd | 79 | #include "ccl.h" |
32d08644 | 80 | #include "coding.h" |
f0b950cf | 81 | #include "composite.h" |
57bda87a | 82 | #include <epaths.h> |
80856e74 | 83 | #include "process.h" |
d177f194 | 84 | #include "syssignal.h" |
a129418f | 85 | #include "systty.h" |
aba637ec | 86 | #include "blockinput.h" |
80856e74 | 87 | |
5f027cea EZ |
88 | #ifdef MSDOS |
89 | #include "msdos.h" | |
90 | #endif | |
91 | ||
80856e74 JB |
92 | #ifdef VMS |
93 | extern noshare char **environ; | |
94 | #else | |
03695ace | 95 | #ifndef USE_CRT_DLL |
80856e74 JB |
96 | extern char **environ; |
97 | #endif | |
03695ace | 98 | #endif |
80856e74 | 99 | |
f95c3f91 | 100 | #ifdef HAVE_SETPGID |
2b7e8799 | 101 | #if !defined (USG) || defined (BSD_PGRPS) |
320695d8 | 102 | #undef setpgrp |
f95c3f91 GM |
103 | #define setpgrp setpgid |
104 | #endif | |
2b7e8799 | 105 | #endif |
f95c3f91 | 106 | |
b81a1b72 SM |
107 | Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes; |
108 | Lisp_Object Vdata_directory, Vdoc_directory; | |
1e7ce61b | 109 | Lisp_Object Vconfigure_info_directory, Vshared_game_score_directory; |
8abd035b | 110 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
111 | |
112 | Lisp_Object Vshell_file_name; | |
113 | ||
80856e74 | 114 | Lisp_Object Vprocess_environment; |
80856e74 | 115 | |
bad95d8f | 116 | #ifdef DOS_NT |
093650fe | 117 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 118 | #endif /* DOS_NT */ |
093650fe | 119 | |
80856e74 JB |
120 | /* True iff we are about to fork off a synchronous process or if we |
121 | are waiting for it. */ | |
122 | int synch_process_alive; | |
123 | ||
124 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
125 | char *synch_process_death; | |
126 | ||
ca498128 JD |
127 | /* Nonzero => this is the signal number that terminated the subprocess. */ |
128 | int synch_process_termsig; | |
129 | ||
80856e74 JB |
130 | /* If synch_process_death is zero, |
131 | this is exit code of synchronous subprocess. */ | |
132 | int synch_process_retcode; | |
8de15d69 RS |
133 | |
134 | extern Lisp_Object Vdoc_file_name; | |
89e1ec1d | 135 | |
8d024345 | 136 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
80856e74 | 137 | \f |
37d54121 RS |
138 | /* Clean up when exiting Fcall_process. |
139 | On MSDOS, delete the temporary file on any kind of termination. | |
140 | On Unix, kill the process and any children on termination by signal. */ | |
141 | ||
142 | /* Nonzero if this is termination due to exit. */ | |
143 | static int call_process_exited; | |
144 | ||
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 | { | |
e0f712ba | 161 | #if defined (MSDOS) || defined (MAC_OS8) |
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)); | |
e0f712ba | 168 | #else /* not MSDOS and not MAC_OS8 */ |
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 | ||
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) */) | |
fdb82f93 | 216 | (nargs, args) |
80856e74 JB |
217 | int nargs; |
218 | register Lisp_Object *args; | |
219 | { | |
0aa2630f KS |
220 | Lisp_Object infile, buffer, current_dir, path; |
221 | int display_p; | |
80856e74 JB |
222 | int fd[2]; |
223 | int filefd; | |
224 | register int pid; | |
1891f348 | 225 | char buf[16384]; |
6e3bfbb2 | 226 | char *bufptr = buf; |
a0ecb2ac | 227 | int bufsize = sizeof buf; |
aed13378 | 228 | int count = SPECPDL_INDEX (); |
2d607244 | 229 | |
4d3b07fd KR |
230 | register const unsigned char **new_argv |
231 | = (const unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
80856e74 | 232 | struct buffer *old = current_buffer; |
39eaa782 RS |
233 | /* File to use for stderr in the child. |
234 | t means use same as standard output. */ | |
235 | Lisp_Object error_file; | |
7e6c2178 RS |
236 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
237 | char *outf, *tempfile; | |
238 | int outfilefd; | |
239 | #endif | |
e0f712ba | 240 | #ifdef MAC_OS8 |
052062e0 RS |
241 | char *tempfile; |
242 | int outfilefd; | |
243 | #endif | |
80856e74 JB |
244 | #if 0 |
245 | int mask; | |
246 | #endif | |
32d08644 KH |
247 | struct coding_system process_coding; /* coding-system of process output */ |
248 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
249 | /* Set to the return value of Ffind_operation_coding_system. */ |
250 | Lisp_Object coding_systems; | |
251 | ||
252 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
253 | coding_systems = Qt; | |
32d08644 | 254 | |
b7826503 | 255 | CHECK_STRING (args[0]); |
80856e74 | 256 | |
39eaa782 RS |
257 | error_file = Qt; |
258 | ||
7e6c2178 RS |
259 | #ifndef subprocesses |
260 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
177c0ea7 | 261 | if (nargs >= 3 |
09ffb8b5 | 262 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
263 | error ("Operating system cannot handle asynchronous subprocesses"); |
264 | #endif /* subprocesses */ | |
265 | ||
09494912 | 266 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
267 | { |
268 | Lisp_Object val, *args2; | |
32d08644 KH |
269 | int i; |
270 | ||
271 | /* If arguments are supplied, we may have to encode them. */ | |
272 | if (nargs >= 5) | |
273 | { | |
30d57b8e RS |
274 | int must_encode = 0; |
275 | ||
e7c1c20e | 276 | for (i = 4; i < nargs; i++) |
b7826503 | 277 | CHECK_STRING (args[i]); |
e7c1c20e | 278 | |
a2286b5c | 279 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
280 | if (STRING_MULTIBYTE (args[i])) |
281 | must_encode = 1; | |
282 | ||
beacaab3 KH |
283 | if (!NILP (Vcoding_system_for_write)) |
284 | val = Vcoding_system_for_write; | |
30d57b8e | 285 | else if (! must_encode) |
beacaab3 KH |
286 | val = Qnil; |
287 | else | |
32d08644 KH |
288 | { |
289 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
290 | args2[0] = Qcall_process; | |
291 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 292 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 293 | if (CONSP (coding_systems)) |
70949dac | 294 | val = XCDR (coding_systems); |
776b95cb | 295 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 296 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
297 | else |
298 | val = Qnil; | |
32d08644 KH |
299 | } |
300 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); | |
301 | } | |
32d08644 KH |
302 | } |
303 | ||
e576cab4 JB |
304 | if (nargs >= 2 && ! NILP (args[1])) |
305 | { | |
306 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
b7826503 | 307 | CHECK_STRING (infile); |
e576cab4 | 308 | } |
80856e74 | 309 | else |
5437e9f9 | 310 | infile = build_string (NULL_DEVICE); |
80856e74 | 311 | |
e576cab4 JB |
312 | if (nargs >= 3) |
313 | { | |
39eaa782 RS |
314 | buffer = args[2]; |
315 | ||
316 | /* If BUFFER is a list, its meaning is | |
317 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
318 | if (CONSP (buffer)) | |
319 | { | |
70949dac | 320 | if (CONSP (XCDR (buffer))) |
45be8a1e | 321 | { |
a9d4f28a | 322 | Lisp_Object stderr_file; |
70949dac | 323 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
324 | |
325 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
326 | error_file = stderr_file; | |
327 | else | |
328 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
329 | } | |
330 | ||
70949dac | 331 | buffer = XCAR (buffer); |
39eaa782 | 332 | } |
044512ed | 333 | |
39eaa782 RS |
334 | if (!(EQ (buffer, Qnil) |
335 | || EQ (buffer, Qt) | |
3ffde7d6 | 336 | || INTEGERP (buffer))) |
e576cab4 | 337 | { |
39eaa782 RS |
338 | Lisp_Object spec_buffer; |
339 | spec_buffer = buffer; | |
50fe359b | 340 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
341 | /* Mention the buffer name for a better error message. */ |
342 | if (NILP (buffer)) | |
b7826503 PJ |
343 | CHECK_BUFFER (spec_buffer); |
344 | CHECK_BUFFER (buffer); | |
e576cab4 JB |
345 | } |
346 | } | |
177c0ea7 | 347 | else |
e576cab4 | 348 | buffer = Qnil; |
80856e74 | 349 | |
58616e67 JB |
350 | /* Make sure that the child will be able to chdir to the current |
351 | buffer's current directory, or its unhandled equivalent. We | |
352 | can't just have the child check for an error when it does the | |
353 | chdir, since it's in a vfork. | |
354 | ||
355 | We have to GCPRO around this because Fexpand_file_name, | |
356 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
357 | might call a file name handling function. The argument list is | |
358 | protected by the caller, so all we really have to worry about is | |
359 | buffer. */ | |
360 | { | |
361 | struct gcpro gcpro1, gcpro2, gcpro3; | |
362 | ||
363 | current_dir = current_buffer->directory; | |
364 | ||
365 | GCPRO3 (infile, buffer, current_dir); | |
366 | ||
c52b0b34 KH |
367 | current_dir |
368 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
369 | Qnil); | |
58616e67 JB |
370 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
371 | report_file_error ("Setting current directory", | |
372 | Fcons (current_buffer->directory, Qnil)); | |
373 | ||
374 | UNGCPRO; | |
375 | } | |
376 | ||
0aa2630f | 377 | display_p = INTERACTIVE && nargs >= 4 && !NILP (args[3]); |
80856e74 | 378 | |
d5db4077 | 379 | filefd = emacs_open (SDATA (infile), O_RDONLY, 0); |
80856e74 JB |
380 | if (filefd < 0) |
381 | { | |
e576cab4 | 382 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
383 | } |
384 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
385 | { |
386 | struct gcpro gcpro1; | |
387 | ||
388 | GCPRO1 (current_dir); | |
5c150961 | 389 | openp (Vexec_path, args[0], Vexec_suffixes, &path, make_number (X_OK)); |
c52b0b34 KH |
390 | UNGCPRO; |
391 | } | |
012c6fcb | 392 | if (NILP (path)) |
80856e74 | 393 | { |
68c45bf0 | 394 | emacs_close (filefd); |
80856e74 JB |
395 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
396 | } | |
8ee8f447 RS |
397 | |
398 | /* If program file name starts with /: for quoting a magic name, | |
399 | discard that. */ | |
400 | if (SBYTES (path) > 2 && SREF (path, 0) == '/' | |
401 | && SREF (path, 1) == ':') | |
402 | path = Fsubstring (path, make_number (2), Qnil); | |
403 | ||
d5db4077 | 404 | new_argv[0] = SDATA (path); |
c364e618 KH |
405 | if (nargs > 4) |
406 | { | |
407 | register int i; | |
c5bfa12b | 408 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 409 | |
c5bfa12b KH |
410 | GCPRO3 (infile, buffer, current_dir); |
411 | argument_coding.dst_multibyte = 0; | |
412 | for (i = 4; i < nargs; i++) | |
c364e618 | 413 | { |
c5bfa12b KH |
414 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
415 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
c364e618 | 416 | { |
c5bfa12b KH |
417 | /* We must encode this argument. */ |
418 | args[i] = encode_coding_string (args[i], &argument_coding, 1); | |
419 | if (argument_coding.type == coding_type_ccl) | |
420 | setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil); | |
c364e618 | 421 | } |
d5db4077 | 422 | new_argv[i - 3] = SDATA (args[i]); |
c364e618 | 423 | } |
c5bfa12b | 424 | UNGCPRO; |
db54baaa | 425 | new_argv[nargs - 3] = 0; |
c364e618 | 426 | } |
db54baaa KH |
427 | else |
428 | new_argv[1] = 0; | |
80856e74 | 429 | |
7e6c2178 | 430 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 431 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
432 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
433 | else | |
434 | { | |
435 | tempfile = alloca (20); | |
436 | *tempfile = '\0'; | |
437 | } | |
438 | dostounix_filename (tempfile); | |
177c0ea7 | 439 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') |
7e6c2178 RS |
440 | strcat (tempfile, "/"); |
441 | strcat (tempfile, "detmp.XXX"); | |
442 | mktemp (tempfile); | |
443 | ||
444 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
445 | if (outfilefd < 0) | |
446 | { | |
68c45bf0 | 447 | emacs_close (filefd); |
6f89d28a MB |
448 | report_file_error ("Opening process output file", |
449 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 450 | } |
6f89d28a | 451 | fd[0] = filefd; |
2610078a | 452 | fd[1] = outfilefd; |
6f89d28a | 453 | #endif /* MSDOS */ |
7e6c2178 | 454 | |
e0f712ba | 455 | #ifdef MAC_OS8 |
052062e0 RS |
456 | /* Since we don't have pipes on the Mac, create a temporary file to |
457 | hold the output of the subprocess. */ | |
d5db4077 KR |
458 | tempfile = (char *) alloca (SBYTES (Vtemp_file_name_pattern) + 1); |
459 | bcopy (SDATA (Vtemp_file_name_pattern), tempfile, | |
460 | SBYTES (Vtemp_file_name_pattern) + 1); | |
052062e0 RS |
461 | |
462 | mktemp (tempfile); | |
463 | ||
464 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
465 | if (outfilefd < 0) | |
466 | { | |
467 | close (filefd); | |
468 | report_file_error ("Opening process output file", | |
469 | Fcons (build_string (tempfile), Qnil)); | |
470 | } | |
471 | fd[0] = filefd; | |
472 | fd[1] = outfilefd; | |
e0f712ba | 473 | #endif /* MAC_OS8 */ |
052062e0 | 474 | |
d50d3dc8 | 475 | if (INTEGERP (buffer)) |
68c45bf0 | 476 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
477 | else |
478 | { | |
7e6c2178 | 479 | #ifndef MSDOS |
e0f712ba | 480 | #ifndef MAC_OS8 |
db92b288 GM |
481 | errno = 0; |
482 | if (pipe (fd) == -1) | |
483 | { | |
484 | emacs_close (filefd); | |
485 | report_file_error ("Creating process pipe", Qnil); | |
486 | } | |
7e6c2178 | 487 | #endif |
052062e0 | 488 | #endif |
80856e74 JB |
489 | #if 0 |
490 | /* Replaced by close_process_descs */ | |
491 | set_exclusive_use (fd[0]); | |
492 | #endif | |
493 | } | |
494 | ||
495 | { | |
496 | /* child_setup must clobber environ in systems with true vfork. | |
497 | Protect it from permanent change. */ | |
498 | register char **save_environ = environ; | |
499 | register int fd1 = fd[1]; | |
39eaa782 | 500 | int fd_error = fd1; |
80856e74 JB |
501 | |
502 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 503 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
504 | #endif |
505 | ||
506 | /* Record that we're about to create a synchronous process. */ | |
507 | synch_process_alive = 1; | |
508 | ||
5c03767e RS |
509 | /* These vars record information from process termination. |
510 | Clear them now before process can possibly terminate, | |
511 | to avoid timing error if process terminates soon. */ | |
512 | synch_process_death = 0; | |
513 | synch_process_retcode = 0; | |
ca498128 | 514 | synch_process_termsig = 0; |
5c03767e | 515 | |
39eaa782 | 516 | if (NILP (error_file)) |
68c45bf0 | 517 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
518 | else if (STRINGP (error_file)) |
519 | { | |
520 | #ifdef DOS_NT | |
d5db4077 | 521 | fd_error = emacs_open (SDATA (error_file), |
68c45bf0 PE |
522 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
523 | S_IREAD | S_IWRITE); | |
39eaa782 | 524 | #else /* not DOS_NT */ |
d5db4077 | 525 | fd_error = creat (SDATA (error_file), 0666); |
39eaa782 RS |
526 | #endif /* not DOS_NT */ |
527 | } | |
528 | ||
529 | if (fd_error < 0) | |
530 | { | |
68c45bf0 | 531 | emacs_close (filefd); |
6f89d28a | 532 | if (fd[0] != filefd) |
68c45bf0 | 533 | emacs_close (fd[0]); |
39eaa782 | 534 | if (fd1 >= 0) |
68c45bf0 | 535 | emacs_close (fd1); |
6f89d28a MB |
536 | #ifdef MSDOS |
537 | unlink (tempfile); | |
538 | #endif | |
539 | report_file_error ("Cannot redirect stderr", | |
540 | Fcons ((NILP (error_file) | |
541 | ? build_string (NULL_DEVICE) : error_file), | |
542 | Qnil)); | |
39eaa782 | 543 | } |
89e1ec1d | 544 | |
8d024345 | 545 | current_dir = ENCODE_FILE (current_dir); |
89e1ec1d | 546 | |
e0f712ba | 547 | #ifdef MAC_OS8 |
052062e0 RS |
548 | { |
549 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
550 | a child_setup as for MSDOS and other platforms. Note that this | |
551 | code does not handle passing the environment to the synchronous | |
552 | Mac subprocess. */ | |
553 | char *infn, *outfn, *errfn, *currdn; | |
177c0ea7 | 554 | |
052062e0 RS |
555 | /* close these files so subprocess can write to them */ |
556 | close (outfilefd); | |
557 | if (fd_error != outfilefd) | |
558 | close (fd_error); | |
559 | fd1 = -1; /* No harm in closing that one! */ | |
560 | ||
d5db4077 | 561 | infn = SDATA (infile); |
052062e0 RS |
562 | outfn = tempfile; |
563 | if (NILP (error_file)) | |
564 | errfn = NULL_DEVICE; | |
565 | else if (EQ (Qt, error_file)) | |
566 | errfn = outfn; | |
567 | else | |
d5db4077 KR |
568 | errfn = SDATA (error_file); |
569 | currdn = SDATA (current_dir); | |
052062e0 RS |
570 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); |
571 | ||
572 | /* Record that the synchronous process exited and note its | |
573 | termination status. */ | |
574 | synch_process_alive = 0; | |
575 | synch_process_retcode = pid; | |
576 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 577 | { |
ca9c0567 | 578 | synchronize_system_messages_locale (); |
68c45bf0 PE |
579 | synch_process_death = strerror (errno); |
580 | } | |
052062e0 RS |
581 | |
582 | /* Since CRLF is converted to LF within `decode_coding', we can | |
583 | always open a file with binary mode. */ | |
584 | fd[0] = open (tempfile, O_BINARY); | |
585 | if (fd[0] < 0) | |
586 | { | |
587 | unlink (tempfile); | |
588 | close (filefd); | |
589 | report_file_error ("Cannot re-open temporary file", Qnil); | |
590 | } | |
591 | } | |
e0f712ba | 592 | #else /* not MAC_OS8 */ |
2610078a | 593 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 594 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
595 | exit status, not its PID, so we assign it to `synch_process_retcode' |
596 | below. */ | |
c17c4250 EZ |
597 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
598 | 0, current_dir); | |
39eaa782 | 599 | |
2610078a KH |
600 | /* Record that the synchronous process exited and note its |
601 | termination status. */ | |
602 | synch_process_alive = 0; | |
603 | synch_process_retcode = pid; | |
604 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 605 | { |
ca9c0567 | 606 | synchronize_system_messages_locale (); |
68c45bf0 PE |
607 | synch_process_death = strerror (errno); |
608 | } | |
2610078a | 609 | |
68c45bf0 | 610 | emacs_close (outfilefd); |
2610078a | 611 | if (fd_error != outfilefd) |
68c45bf0 | 612 | emacs_close (fd_error); |
2610078a | 613 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
614 | /* Since CRLF is converted to LF within `decode_coding', we can |
615 | always open a file with binary mode. */ | |
68c45bf0 | 616 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
617 | if (fd[0] < 0) |
618 | { | |
619 | unlink (tempfile); | |
68c45bf0 | 620 | emacs_close (filefd); |
2610078a KH |
621 | report_file_error ("Cannot re-open temporary file", Qnil); |
622 | } | |
623 | #else /* not MSDOS */ | |
bad95d8f | 624 | #ifdef WINDOWSNT |
2d607244 RS |
625 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
626 | 0, current_dir); | |
bad95d8f | 627 | #else /* not WINDOWSNT */ |
aba637ec KS |
628 | BLOCK_INPUT; |
629 | ||
80856e74 JB |
630 | pid = vfork (); |
631 | ||
632 | if (pid == 0) | |
633 | { | |
634 | if (fd[0] >= 0) | |
68c45bf0 | 635 | emacs_close (fd[0]); |
1e7963c7 RS |
636 | #ifdef HAVE_SETSID |
637 | setsid (); | |
638 | #endif | |
639 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
640 | setpgrp (); |
641 | #else | |
642 | setpgrp (pid, pid); | |
643 | #endif /* USG */ | |
2d607244 RS |
644 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
645 | 0, current_dir); | |
80856e74 | 646 | } |
aba637ec KS |
647 | |
648 | UNBLOCK_INPUT; | |
bad95d8f | 649 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
650 | |
651 | /* The MSDOS case did this already. */ | |
652 | if (fd_error >= 0) | |
68c45bf0 | 653 | emacs_close (fd_error); |
2610078a | 654 | #endif /* not MSDOS */ |
e0f712ba | 655 | #endif /* not MAC_OS8 */ |
80856e74 | 656 | |
80856e74 JB |
657 | environ = save_environ; |
658 | ||
6b6e798b RS |
659 | /* Close most of our fd's, but not fd[0] |
660 | since we will use that to read input from. */ | |
68c45bf0 | 661 | emacs_close (filefd); |
799abb26 | 662 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 663 | emacs_close (fd1); |
80856e74 JB |
664 | } |
665 | ||
666 | if (pid < 0) | |
667 | { | |
6b6e798b | 668 | if (fd[0] >= 0) |
68c45bf0 | 669 | emacs_close (fd[0]); |
80856e74 JB |
670 | report_file_error ("Doing vfork", Qnil); |
671 | } | |
672 | ||
d50d3dc8 | 673 | if (INTEGERP (buffer)) |
80856e74 | 674 | { |
6b6e798b | 675 | if (fd[0] >= 0) |
68c45bf0 | 676 | emacs_close (fd[0]); |
80856e74 | 677 | #ifndef subprocesses |
e576cab4 JB |
678 | /* If Emacs has been built with asynchronous subprocess support, |
679 | we don't need to do this, I think because it will then have | |
680 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
681 | wait_without_blocking (); |
682 | #endif /* subprocesses */ | |
80856e74 JB |
683 | return Qnil; |
684 | } | |
685 | ||
6b6e798b | 686 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
687 | call_process_exited = 0; |
688 | ||
e0f712ba | 689 | #if defined(MSDOS) || defined(MAC_OS8) |
7e6c2178 RS |
690 | /* MSDOS needs different cleanup information. */ |
691 | record_unwind_protect (call_process_cleanup, | |
692 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
693 | #else | |
80856e74 JB |
694 | record_unwind_protect (call_process_cleanup, |
695 | Fcons (make_number (fd[0]), make_number (pid))); | |
e0f712ba | 696 | #endif /* not MSDOS and not MAC_OS8 */ |
80856e74 JB |
697 | |
698 | ||
d50d3dc8 | 699 | if (BUFFERP (buffer)) |
80856e74 JB |
700 | Fset_buffer (buffer); |
701 | ||
09494912 RS |
702 | if (NILP (buffer)) |
703 | { | |
704 | /* If BUFFER is nil, we must read process output once and then | |
705 | discard it, so setup coding system but with nil. */ | |
706 | setup_coding_system (Qnil, &process_coding); | |
707 | } | |
708 | else | |
709 | { | |
710 | Lisp_Object val, *args2; | |
711 | ||
712 | val = Qnil; | |
713 | if (!NILP (Vcoding_system_for_read)) | |
714 | val = Vcoding_system_for_read; | |
715 | else | |
716 | { | |
717 | if (EQ (coding_systems, Qt)) | |
718 | { | |
719 | int i; | |
720 | ||
721 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
722 | args2[0] = Qcall_process; | |
723 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
724 | coding_systems | |
725 | = Ffind_operation_coding_system (nargs + 1, args2); | |
726 | } | |
727 | if (CONSP (coding_systems)) | |
70949dac | 728 | val = XCAR (coding_systems); |
09494912 | 729 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 730 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
731 | else |
732 | val = Qnil; | |
733 | } | |
734 | setup_coding_system (Fcheck_coding_system (val), &process_coding); | |
735 | /* In unibyte mode, character code conversion should not take | |
736 | place but EOL conversion should. So, setup raw-text or one | |
737 | of the subsidiary according to the information just setup. */ | |
738 | if (NILP (current_buffer->enable_multibyte_characters) | |
739 | && !NILP (val)) | |
740 | setup_raw_text_coding_system (&process_coding); | |
741 | } | |
c5bfa12b KH |
742 | process_coding.src_multibyte = 0; |
743 | process_coding.dst_multibyte | |
744 | = (BUFFERP (buffer) | |
745 | ? ! NILP (XBUFFER (buffer)->enable_multibyte_characters) | |
746 | : ! NILP (current_buffer->enable_multibyte_characters)); | |
09494912 | 747 | |
80856e74 JB |
748 | immediate_quit = 1; |
749 | QUIT; | |
750 | ||
751 | { | |
752 | register int nread; | |
0ad477db | 753 | int first = 1; |
6e3bfbb2 | 754 | int total_read = 0; |
321fecde | 755 | int carryover = 0; |
0aa2630f | 756 | int display_on_the_fly = display_p; |
05b44e90 | 757 | struct coding_system saved_coding; |
f778b157 KH |
758 | int pt_orig = PT, pt_byte_orig = PT_BYTE; |
759 | int inserted; | |
05b44e90 KH |
760 | |
761 | saved_coding = process_coding; | |
f0b950cf KH |
762 | if (process_coding.composing != COMPOSITION_DISABLED) |
763 | coding_allocate_composition_data (&process_coding, PT); | |
60558b19 | 764 | while (1) |
80856e74 | 765 | { |
60558b19 RS |
766 | /* Repeatedly read until we've filled as much as possible |
767 | of the buffer size we have. But don't read | |
8e6208c5 | 768 | less than 1024--save that for the next bufferful. */ |
321fecde | 769 | nread = carryover; |
60558b19 | 770 | while (nread < bufsize - 1024) |
00fb3e95 | 771 | { |
68c45bf0 PE |
772 | int this_read = emacs_read (fd[0], bufptr + nread, |
773 | bufsize - nread); | |
60558b19 RS |
774 | |
775 | if (this_read < 0) | |
776 | goto give_up; | |
777 | ||
778 | if (this_read == 0) | |
7a7ab107 KH |
779 | { |
780 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
781 | break; | |
782 | } | |
60558b19 RS |
783 | |
784 | nread += this_read; | |
7a7ab107 | 785 | total_read += this_read; |
60558b19 | 786 | |
7a7ab107 KH |
787 | if (display_on_the_fly) |
788 | break; | |
789 | } | |
60558b19 RS |
790 | |
791 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 792 | immediate_quit = 0; |
177c0ea7 | 793 | |
012c6fcb | 794 | if (!NILP (buffer)) |
32d08644 | 795 | { |
c5bfa12b KH |
796 | if (! CODING_MAY_REQUIRE_DECODING (&process_coding)) |
797 | insert_1_both (bufptr, nread, nread, 0, 1, 0); | |
32d08644 KH |
798 | else |
799 | { /* We have to decode the input. */ | |
f0b950cf KH |
800 | int size; |
801 | char *decoding_buf; | |
32d08644 | 802 | |
f0b950cf KH |
803 | repeat_decoding: |
804 | size = decoding_buffer_size (&process_coding, nread); | |
805 | decoding_buf = (char *) xmalloc (size); | |
177c0ea7 | 806 | |
b252f801 KH |
807 | /* We can't use the macro CODING_REQUIRE_DETECTION |
808 | because it always returns nonzero if the coding | |
809 | system requires EOL detection. Here, we have to | |
810 | check only whether or not the coding system | |
811 | requires text-encoding detection. */ | |
812 | if (process_coding.type == coding_type_undecided) | |
950a45d0 KH |
813 | { |
814 | detect_coding (&process_coding, bufptr, nread); | |
815 | if (process_coding.composing != COMPOSITION_DISABLED) | |
07c381ad KH |
816 | /* We have not yet allocated the composition |
817 | data because the coding type was undecided. */ | |
950a45d0 KH |
818 | coding_allocate_composition_data (&process_coding, PT); |
819 | } | |
2d892150 KH |
820 | if (process_coding.cmp_data) |
821 | process_coding.cmp_data->char_offset = PT; | |
177c0ea7 | 822 | |
321fecde KH |
823 | decode_coding (&process_coding, bufptr, decoding_buf, |
824 | nread, size); | |
177c0ea7 | 825 | |
7a7ab107 KH |
826 | if (display_on_the_fly |
827 | && saved_coding.type == coding_type_undecided | |
828 | && process_coding.type != coding_type_undecided) | |
829 | { | |
830 | /* We have detected some coding system. But, | |
831 | there's a possibility that the detection was | |
0aa2630f KS |
832 | done by insufficient data. So, we try the code |
833 | detection again with more data. */ | |
a871dd58 | 834 | xfree (decoding_buf); |
7a7ab107 KH |
835 | display_on_the_fly = 0; |
836 | process_coding = saved_coding; | |
837 | carryover = nread; | |
0aa2630f KS |
838 | /* This is to make the above condition always |
839 | fails in the future. */ | |
840 | saved_coding.type = coding_type_no_conversion; | |
7a7ab107 KH |
841 | continue; |
842 | } | |
177c0ea7 | 843 | |
321fecde | 844 | if (process_coding.produced > 0) |
2d892150 KH |
845 | insert_1_both (decoding_buf, process_coding.produced_char, |
846 | process_coding.produced, 0, 1, 0); | |
a871dd58 | 847 | xfree (decoding_buf); |
7bdba03c GM |
848 | |
849 | if (process_coding.result == CODING_FINISH_INCONSISTENT_EOL) | |
850 | { | |
851 | Lisp_Object eol_type, coding; | |
852 | ||
853 | if (process_coding.eol_type == CODING_EOL_CR) | |
854 | { | |
855 | /* CRs have been replaced with LFs. Undo | |
856 | that in the text inserted above. */ | |
857 | unsigned char *p; | |
177c0ea7 | 858 | |
7bdba03c | 859 | move_gap_both (PT, PT_BYTE); |
177c0ea7 | 860 | |
7bdba03c GM |
861 | p = BYTE_POS_ADDR (pt_byte_orig); |
862 | for (; p < GPT_ADDR; ++p) | |
863 | if (*p == '\n') | |
864 | *p = '\r'; | |
865 | } | |
866 | else if (process_coding.eol_type == CODING_EOL_CRLF) | |
867 | { | |
868 | /* CR LFs have been replaced with LFs. Undo | |
869 | that by inserting CRs in front of LFs in | |
870 | the text inserted above. */ | |
871 | EMACS_INT bytepos, old_pt, old_pt_byte, nCR; | |
872 | ||
873 | old_pt = PT; | |
874 | old_pt_byte = PT_BYTE; | |
875 | nCR = 0; | |
177c0ea7 | 876 | |
7bdba03c GM |
877 | for (bytepos = PT_BYTE - 1; |
878 | bytepos >= pt_byte_orig; | |
879 | --bytepos) | |
880 | if (FETCH_BYTE (bytepos) == '\n') | |
881 | { | |
882 | EMACS_INT charpos = BYTE_TO_CHAR (bytepos); | |
883 | TEMP_SET_PT_BOTH (charpos, bytepos); | |
884 | insert_1_both ("\r", 1, 1, 0, 1, 0); | |
885 | ++nCR; | |
886 | } | |
887 | ||
888 | TEMP_SET_PT_BOTH (old_pt + nCR, old_pt_byte + nCR); | |
889 | } | |
890 | ||
891 | /* Set the coding system symbol to that for | |
892 | Unix-like EOL. */ | |
893 | eol_type = Fget (saved_coding.symbol, Qeol_type); | |
894 | if (VECTORP (eol_type) | |
895 | && ASIZE (eol_type) == 3 | |
896 | && SYMBOLP (AREF (eol_type, CODING_EOL_LF))) | |
897 | coding = AREF (eol_type, CODING_EOL_LF); | |
898 | else | |
899 | coding = saved_coding.symbol; | |
177c0ea7 | 900 | |
7bdba03c GM |
901 | process_coding.symbol = coding; |
902 | process_coding.eol_type = CODING_EOL_LF; | |
903 | process_coding.mode | |
904 | &= ~CODING_MODE_INHIBIT_INCONSISTENT_EOL; | |
905 | } | |
177c0ea7 | 906 | |
f0b950cf KH |
907 | nread -= process_coding.consumed; |
908 | carryover = nread; | |
321fecde | 909 | if (carryover > 0) |
c5bfa12b KH |
910 | /* As CARRYOVER should not be that large, we had |
911 | better avoid overhead of bcopy. */ | |
912 | BCOPY_SHORT (bufptr + process_coding.consumed, bufptr, | |
913 | carryover); | |
f0b950cf KH |
914 | if (process_coding.result == CODING_FINISH_INSUFFICIENT_CMP) |
915 | { | |
916 | /* The decoding ended because of insufficient data | |
917 | area to record information about composition. | |
918 | We must try decoding with additional data area | |
2d892150 | 919 | before reading more output for the process. */ |
f0b950cf KH |
920 | coding_allocate_composition_data (&process_coding, PT); |
921 | goto repeat_decoding; | |
922 | } | |
32d08644 KH |
923 | } |
924 | } | |
c5bfa12b | 925 | |
321fecde | 926 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 927 | break; |
6e3bfbb2 RS |
928 | |
929 | /* Make the buffer bigger as we continue to read more data, | |
930 | but not past 64k. */ | |
931 | if (bufsize < 64 * 1024 && total_read > 32 * bufsize) | |
932 | { | |
7ec8aa3f | 933 | char *tempptr; |
6e3bfbb2 | 934 | bufsize *= 2; |
7ec8aa3f RS |
935 | |
936 | tempptr = (char *) alloca (bufsize); | |
937 | bcopy (bufptr, tempptr, bufsize / 2); | |
938 | bufptr = tempptr; | |
6e3bfbb2 RS |
939 | } |
940 | ||
0aa2630f | 941 | if (display_p) |
0ad477db RS |
942 | { |
943 | if (first) | |
944 | prepare_menu_bars (); | |
945 | first = 0; | |
3007ebfb | 946 | redisplay_preserve_echo_area (1); |
0aa2630f KS |
947 | /* This variable might have been set to 0 for code |
948 | detection. In that case, we set it back to 1 because | |
949 | we should have already detected a coding system. */ | |
950 | display_on_the_fly = 1; | |
0ad477db | 951 | } |
80856e74 JB |
952 | immediate_quit = 1; |
953 | QUIT; | |
954 | } | |
60558b19 | 955 | give_up: ; |
80856e74 | 956 | |
2d892150 KH |
957 | if (!NILP (buffer) |
958 | && process_coding.cmp_data) | |
959 | { | |
960 | coding_restore_composition (&process_coding, Fcurrent_buffer ()); | |
961 | coding_free_composition_data (&process_coding); | |
962 | } | |
f0b950cf | 963 | |
838c9726 | 964 | { |
aed13378 | 965 | int post_read_count = SPECPDL_INDEX (); |
838c9726 KH |
966 | |
967 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
968 | inserted = PT - pt_orig; | |
969 | TEMP_SET_PT_BOTH (pt_orig, pt_byte_orig); | |
970 | if (SYMBOLP (process_coding.post_read_conversion) | |
971 | && !NILP (Ffboundp (process_coding.post_read_conversion))) | |
972 | call1 (process_coding.post_read_conversion, make_number (inserted)); | |
f778b157 | 973 | |
838c9726 | 974 | Vlast_coding_system_used = process_coding.symbol; |
bbd29cfe | 975 | |
838c9726 KH |
976 | /* If the caller required, let the buffer inherit the |
977 | coding-system used to decode the process output. */ | |
978 | if (inherit_process_coding_system) | |
979 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
980 | make_number (total_read)); | |
981 | ||
982 | unbind_to (post_read_count, Qnil); | |
983 | } | |
3b440bb5 EZ |
984 | } |
985 | ||
80856e74 JB |
986 | /* Wait for it to terminate, unless it already has. */ |
987 | wait_for_termination (pid); | |
988 | ||
989 | immediate_quit = 0; | |
990 | ||
991 | set_buffer_internal (old); | |
992 | ||
37d54121 RS |
993 | /* Don't kill any children that the subprocess may have left behind |
994 | when exiting. */ | |
995 | call_process_exited = 1; | |
996 | ||
80856e74 JB |
997 | unbind_to (count, Qnil); |
998 | ||
ca498128 JD |
999 | if (synch_process_termsig) |
1000 | { | |
1001 | char *signame; | |
1002 | ||
1003 | synchronize_system_messages_locale (); | |
1004 | signame = strsignal (synch_process_termsig); | |
1005 | ||
1006 | if (signame == 0) | |
1007 | signame = "unknown"; | |
1008 | ||
1009 | synch_process_death = signame; | |
1010 | } | |
1011 | ||
80856e74 | 1012 | if (synch_process_death) |
68c45bf0 PE |
1013 | return code_convert_string_norecord (build_string (synch_process_death), |
1014 | Vlocale_coding_system, 0); | |
80856e74 JB |
1015 | return make_number (synch_process_retcode); |
1016 | } | |
1017 | #endif | |
1018 | \f | |
9fefd2ba | 1019 | static Lisp_Object |
80856e74 JB |
1020 | delete_temp_file (name) |
1021 | Lisp_Object name; | |
1022 | { | |
2e3dc201 | 1023 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 1024 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 1025 | internal_delete_file (name); |
320695d8 | 1026 | return Qnil; |
80856e74 JB |
1027 | } |
1028 | ||
1029 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
fdb82f93 PJ |
1030 | 3, MANY, 0, |
1031 | doc: /* Send text from START to END to a synchronous process running PROGRAM. | |
1032 | The remaining arguments are optional. | |
1033 | Delete the text if fourth arg DELETE is non-nil. | |
1034 | ||
1035 | Insert output in BUFFER before point; t means current buffer; | |
1036 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
1037 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
1038 | REAL-BUFFER says what to do with standard output, as above, | |
1039 | while STDERR-FILE says what to do with standard error in the child. | |
1040 | STDERR-FILE may be nil (discard standard error output), | |
1041 | t (mix it with ordinary output), or a file name string. | |
1042 | ||
1043 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
1044 | Remaining args are passed to PROGRAM at startup as command args. | |
1045 | ||
ba9a5174 | 1046 | If BUFFER is 0, `call-process-region' returns immediately with value nil. |
fdb82f93 PJ |
1047 | Otherwise it waits for PROGRAM to terminate |
1048 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
1049 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
1050 | ||
1051 | usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 1052 | (nargs, args) |
80856e74 JB |
1053 | int nargs; |
1054 | register Lisp_Object *args; | |
1055 | { | |
39323a7e KH |
1056 | struct gcpro gcpro1; |
1057 | Lisp_Object filename_string; | |
1058 | register Lisp_Object start, end; | |
aed13378 | 1059 | int count = SPECPDL_INDEX (); |
08ee4e87 | 1060 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 1061 | Lisp_Object coding_systems; |
32d08644 KH |
1062 | Lisp_Object val, *args2; |
1063 | int i; | |
bad95d8f | 1064 | #ifdef DOS_NT |
7e6c2178 | 1065 | char *tempfile; |
7e6c2178 RS |
1066 | char *outf = '\0'; |
1067 | ||
8a52365c EZ |
1068 | if ((outf = egetenv ("TMPDIR")) |
1069 | || (outf = egetenv ("TMP")) | |
1070 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
1071 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
1072 | else | |
1073 | { | |
1074 | tempfile = alloca (20); | |
1075 | *tempfile = '\0'; | |
1076 | } | |
0774fcf8 | 1077 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 1078 | strcat (tempfile, "/"); |
5711b547 RS |
1079 | if ('/' == DIRECTORY_SEP) |
1080 | dostounix_filename (tempfile); | |
1081 | else | |
1082 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
1083 | #ifdef WINDOWSNT |
1084 | strcat (tempfile, "emXXXXXX"); | |
1085 | #else | |
7e6c2178 | 1086 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 1087 | #endif |
bad95d8f | 1088 | #else /* not DOS_NT */ |
d5db4077 KR |
1089 | char *tempfile = (char *) alloca (SBYTES (Vtemp_file_name_pattern) + 1); |
1090 | bcopy (SDATA (Vtemp_file_name_pattern), tempfile, | |
1091 | SBYTES (Vtemp_file_name_pattern) + 1); | |
bad95d8f | 1092 | #endif /* not DOS_NT */ |
7e6c2178 | 1093 | |
09494912 RS |
1094 | coding_systems = Qt; |
1095 | ||
1ddc85a4 DL |
1096 | #ifdef HAVE_MKSTEMP |
1097 | { | |
1098 | int fd = mkstemp (tempfile); | |
1099 | if (fd == -1) | |
1100 | report_file_error ("Failed to open temporary file", | |
1101 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
1102 | else | |
1103 | close (fd); | |
1104 | } | |
1105 | #else | |
80856e74 | 1106 | mktemp (tempfile); |
1ddc85a4 | 1107 | #endif |
80856e74 JB |
1108 | |
1109 | filename_string = build_string (tempfile); | |
39323a7e | 1110 | GCPRO1 (filename_string); |
80856e74 JB |
1111 | start = args[0]; |
1112 | end = args[1]; | |
32d08644 | 1113 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
1114 | if (!NILP (Vcoding_system_for_write)) |
1115 | val = Vcoding_system_for_write; | |
1116 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
1117 | val = Qnil; |
1118 | else | |
beacaab3 | 1119 | { |
91489411 RS |
1120 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
1121 | args2[0] = Qcall_process_region; | |
1122 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
1123 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
1124 | if (CONSP (coding_systems)) | |
70949dac | 1125 | val = XCDR (coding_systems); |
91489411 | 1126 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1127 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 1128 | else |
91489411 | 1129 | val = Qnil; |
beacaab3 | 1130 | } |
32d08644 | 1131 | |
168afdaa | 1132 | { |
aed13378 | 1133 | int count1 = SPECPDL_INDEX (); |
168afdaa RS |
1134 | |
1135 | specbind (intern ("coding-system-for-write"), val); | |
1136 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); | |
1137 | ||
1138 | unbind_to (count1, Qnil); | |
1139 | } | |
91489411 | 1140 | |
177c0ea7 | 1141 | /* Note that Fcall_process takes care of binding |
91489411 | 1142 | coding-system-for-read. */ |
093650fe | 1143 | |
80856e74 JB |
1144 | record_unwind_protect (delete_temp_file, filename_string); |
1145 | ||
edf496dd | 1146 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
1147 | Fdelete_region (start, end); |
1148 | ||
edf496dd KH |
1149 | if (nargs > 3) |
1150 | { | |
1151 | args += 2; | |
1152 | nargs -= 2; | |
1153 | } | |
1154 | else | |
1155 | { | |
1156 | args[0] = args[2]; | |
1157 | nargs = 2; | |
1158 | } | |
1159 | args[1] = filename_string; | |
80856e74 | 1160 | |
edf496dd | 1161 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
1162 | } |
1163 | \f | |
1164 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
1165 | ||
dfcf069d AS |
1166 | static int relocate_fd (); |
1167 | ||
80856e74 JB |
1168 | /* This is the last thing run in a newly forked inferior |
1169 | either synchronous or asynchronous. | |
1170 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1171 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1172 | then exec another program based on new_argv. | |
1173 | ||
1174 | This function may change environ for the superior process. | |
1175 | Therefore, the superior process must save and restore the value | |
1176 | of environ around the vfork and the call to this function. | |
1177 | ||
80856e74 | 1178 | SET_PGRP is nonzero if we should put the subprocess into a separate |
177c0ea7 | 1179 | process group. |
e576cab4 JB |
1180 | |
1181 | CURRENT_DIR is an elisp string giving the path of the current | |
1182 | directory the subprocess should have. Since we can't really signal | |
1183 | a decent error from within the child, this should be verified as an | |
1184 | executable directory by the parent. */ | |
80856e74 | 1185 | |
dfcf069d | 1186 | int |
e576cab4 | 1187 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1188 | int in, out, err; |
1189 | register char **new_argv; | |
80856e74 | 1190 | int set_pgrp; |
e576cab4 | 1191 | Lisp_Object current_dir; |
80856e74 | 1192 | { |
e576cab4 | 1193 | char **env; |
7fcf7f05 | 1194 | char *pwd_var; |
bad95d8f RS |
1195 | #ifdef WINDOWSNT |
1196 | int cpid; | |
4252a4bd | 1197 | HANDLE handles[3]; |
bad95d8f | 1198 | #endif /* WINDOWSNT */ |
e576cab4 | 1199 | |
33abe2d9 | 1200 | int pid = getpid (); |
80856e74 | 1201 | |
68d10241 | 1202 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 | 1203 | { |
31ade731 | 1204 | extern EMACS_INT emacs_priority; |
4f0b9d49 | 1205 | |
68d10241 RS |
1206 | if (emacs_priority < 0) |
1207 | nice (- emacs_priority); | |
4f0b9d49 | 1208 | } |
5b633aeb | 1209 | #endif |
80856e74 JB |
1210 | |
1211 | #ifdef subprocesses | |
1212 | /* Close Emacs's descriptors that this process should not have. */ | |
1213 | close_process_descs (); | |
1214 | #endif | |
c17c4250 EZ |
1215 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1216 | we will lose if we call close_load_descs here. */ | |
1217 | #ifndef DOS_NT | |
4458cebe | 1218 | close_load_descs (); |
c17c4250 | 1219 | #endif |
80856e74 JB |
1220 | |
1221 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1222 | that do not have true vfork or that have true (stack) alloca. | |
1223 | If using vfork and C_ALLOCA it is safe because that changes | |
1224 | the superior's static variables as if the superior had done alloca | |
1225 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1226 | { |
7fcf7f05 | 1227 | register char *temp; |
e576cab4 | 1228 | register int i; |
77d78be1 | 1229 | |
d5db4077 | 1230 | i = SBYTES (current_dir); |
16425c4a EZ |
1231 | #ifdef MSDOS |
1232 | /* MSDOS must have all environment variables malloc'ed, because | |
1233 | low-level libc functions that launch subsidiary processes rely | |
1234 | on that. */ | |
1235 | pwd_var = (char *) xmalloc (i + 6); | |
1236 | #else | |
7fcf7f05 | 1237 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1238 | #endif |
7fcf7f05 RS |
1239 | temp = pwd_var + 4; |
1240 | bcopy ("PWD=", pwd_var, 4); | |
d5db4077 | 1241 | bcopy (SDATA (current_dir), temp, i); |
bad95d8f | 1242 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1243 | temp[i] = 0; |
1244 | ||
c17c4250 | 1245 | #ifndef DOS_NT |
e576cab4 JB |
1246 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1247 | the callers check the current directory before forking, this | |
1248 | should only return an error if the directory's permissions | |
1249 | are changed between the check and this chdir, but we should | |
1250 | at least check. */ | |
1251 | if (chdir (temp) < 0) | |
20b25e46 | 1252 | _exit (errno); |
b4c7684c | 1253 | #endif |
7fcf7f05 | 1254 | |
c17c4250 EZ |
1255 | #ifdef DOS_NT |
1256 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1257 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1258 | { | |
1259 | temp += 2; | |
1260 | i -= 2; | |
1261 | } | |
1262 | #endif | |
1263 | ||
7fcf7f05 | 1264 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1265 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1266 | temp[--i] = 0; |
e576cab4 | 1267 | } |
80856e74 | 1268 | |
80856e74 JB |
1269 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1270 | { | |
1271 | register Lisp_Object tem; | |
1272 | register char **new_env; | |
1273 | register int new_length; | |
1274 | ||
1275 | new_length = 0; | |
1276 | for (tem = Vprocess_environment; | |
70949dac KR |
1277 | CONSP (tem) && STRINGP (XCAR (tem)); |
1278 | tem = XCDR (tem)) | |
80856e74 JB |
1279 | new_length++; |
1280 | ||
7fcf7f05 RS |
1281 | /* new_length + 2 to include PWD and terminating 0. */ |
1282 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1283 | ||
1284 | /* If we have a PWD envvar, pass one down, | |
1285 | but with corrected value. */ | |
1286 | if (getenv ("PWD")) | |
1287 | *new_env++ = pwd_var; | |
80856e74 | 1288 | |
cd9565ba | 1289 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1290 | for (tem = Vprocess_environment; |
70949dac KR |
1291 | CONSP (tem) && STRINGP (XCAR (tem)); |
1292 | tem = XCDR (tem)) | |
cd9565ba RS |
1293 | { |
1294 | char **ep = env; | |
d5db4077 | 1295 | char *string = (char *) SDATA (XCAR (tem)); |
cd9565ba RS |
1296 | /* See if this string duplicates any string already in the env. |
1297 | If so, don't put it in. | |
1298 | When an env var has multiple definitions, | |
1299 | we keep the definition that comes first in process-environment. */ | |
1300 | for (; ep != new_env; ep++) | |
1301 | { | |
1302 | char *p = *ep, *q = string; | |
1303 | while (1) | |
1304 | { | |
1305 | if (*q == 0) | |
1306 | /* The string is malformed; might as well drop it. */ | |
1307 | goto duplicate; | |
1308 | if (*q != *p) | |
1309 | break; | |
1310 | if (*q == '=') | |
1311 | goto duplicate; | |
1312 | p++, q++; | |
1313 | } | |
1314 | } | |
1315 | *new_env++ = string; | |
1316 | duplicate: ; | |
1317 | } | |
80856e74 JB |
1318 | *new_env = 0; |
1319 | } | |
bad95d8f RS |
1320 | #ifdef WINDOWSNT |
1321 | prepare_standard_handles (in, out, err, handles); | |
d5db4077 | 1322 | set_process_dir (SDATA (current_dir)); |
bad95d8f | 1323 | #else /* not WINDOWSNT */ |
426b37ae JB |
1324 | /* Make sure that in, out, and err are not actually already in |
1325 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1326 | started with its standard in, out, or error closed, as might |
426b37ae | 1327 | happen under X. */ |
f29f9e4a RS |
1328 | { |
1329 | int oin = in, oout = out; | |
1330 | ||
1331 | /* We have to avoid relocating the same descriptor twice! */ | |
1332 | ||
1333 | in = relocate_fd (in, 3); | |
1334 | ||
1335 | if (out == oin) | |
1336 | out = in; | |
1337 | else | |
3e9367e7 | 1338 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1339 | |
1340 | if (err == oin) | |
1341 | err = in; | |
1342 | else if (err == oout) | |
1343 | err = out; | |
1344 | else | |
3e9367e7 | 1345 | err = relocate_fd (err, 3); |
f29f9e4a | 1346 | } |
426b37ae | 1347 | |
c17c4250 | 1348 | #ifndef MSDOS |
68c45bf0 PE |
1349 | emacs_close (0); |
1350 | emacs_close (1); | |
1351 | emacs_close (2); | |
80856e74 JB |
1352 | |
1353 | dup2 (in, 0); | |
1354 | dup2 (out, 1); | |
1355 | dup2 (err, 2); | |
68c45bf0 PE |
1356 | emacs_close (in); |
1357 | emacs_close (out); | |
1358 | emacs_close (err); | |
c17c4250 | 1359 | #endif /* not MSDOS */ |
bad95d8f | 1360 | #endif /* not WINDOWSNT */ |
80856e74 | 1361 | |
6b2cd868 | 1362 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1363 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1364 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1365 | #endif |
e576cab4 JB |
1366 | #else |
1367 | setpgrp (pid, pid); | |
1368 | #endif /* USG */ | |
a129418f RS |
1369 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1370 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 | 1371 | |
c17c4250 EZ |
1372 | #ifdef MSDOS |
1373 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
a3f0666f | 1374 | xfree (pwd_var); |
c17c4250 EZ |
1375 | if (pid == -1) |
1376 | /* An error occurred while trying to run the subprocess. */ | |
1377 | report_file_error ("Spawning child process", Qnil); | |
1378 | return pid; | |
1379 | #else /* not MSDOS */ | |
bad95d8f RS |
1380 | #ifdef WINDOWSNT |
1381 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1382 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1383 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1384 | if (cpid == -1) |
1385 | /* An error occurred while trying to spawn the process. */ | |
1386 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1387 | return cpid; |
1388 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1389 | /* execvp does not accept an environment arg so the only way |
1390 | to pass this environment is to set environ. Our caller | |
1391 | is responsible for restoring the ambient value of environ. */ | |
1392 | environ = env; | |
1393 | execvp (new_argv[0], new_argv); | |
1394 | ||
68c45bf0 PE |
1395 | emacs_write (1, "Can't exec program: ", 20); |
1396 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1397 | emacs_write (1, "\n", 1); | |
80856e74 | 1398 | _exit (1); |
bad95d8f | 1399 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1400 | #endif /* not MSDOS */ |
80856e74 JB |
1401 | } |
1402 | ||
a3833dfe | 1403 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1404 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1405 | static int |
a3833dfe KH |
1406 | relocate_fd (fd, minfd) |
1407 | int fd, minfd; | |
426b37ae | 1408 | { |
a3833dfe | 1409 | if (fd >= minfd) |
426b37ae JB |
1410 | return fd; |
1411 | else | |
1412 | { | |
1413 | int new = dup (fd); | |
1414 | if (new == -1) | |
1415 | { | |
20c018a0 | 1416 | char *message1 = "Error while setting up child: "; |
826c56ac | 1417 | char *errmessage = strerror (errno); |
20c018a0 | 1418 | char *message2 = "\n"; |
68c45bf0 PE |
1419 | emacs_write (2, message1, strlen (message1)); |
1420 | emacs_write (2, errmessage, strlen (errmessage)); | |
1421 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1422 | _exit (1); |
1423 | } | |
1424 | /* Note that we hold the original FD open while we recurse, | |
1425 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1426 | new = relocate_fd (new, minfd); |
68c45bf0 | 1427 | emacs_close (fd); |
426b37ae JB |
1428 | return new; |
1429 | } | |
1430 | } | |
1431 | ||
012c6fcb JA |
1432 | static int |
1433 | getenv_internal (var, varlen, value, valuelen) | |
1434 | char *var; | |
1435 | int varlen; | |
1436 | char **value; | |
1437 | int *valuelen; | |
1438 | { | |
1439 | Lisp_Object scan; | |
1440 | ||
70949dac | 1441 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1442 | { |
c1350752 KH |
1443 | Lisp_Object entry; |
1444 | ||
70949dac | 1445 | entry = XCAR (scan); |
d50d3dc8 | 1446 | if (STRINGP (entry) |
d5db4077 KR |
1447 | && SBYTES (entry) > varlen |
1448 | && SREF (entry, varlen) == '=' | |
bad95d8f RS |
1449 | #ifdef WINDOWSNT |
1450 | /* NT environment variables are case insensitive. */ | |
d5db4077 | 1451 | && ! strnicmp (SDATA (entry), var, varlen) |
bad95d8f | 1452 | #else /* not WINDOWSNT */ |
d5db4077 | 1453 | && ! bcmp (SDATA (entry), var, varlen) |
bad95d8f | 1454 | #endif /* not WINDOWSNT */ |
a9971c6d | 1455 | ) |
012c6fcb | 1456 | { |
d5db4077 KR |
1457 | *value = (char *) SDATA (entry) + (varlen + 1); |
1458 | *valuelen = SBYTES (entry) - (varlen + 1); | |
012c6fcb JA |
1459 | return 1; |
1460 | } | |
1461 | } | |
1462 | ||
1463 | return 0; | |
1464 | } | |
1465 | ||
83fa009c | 1466 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0, |
fdb82f93 PJ |
1467 | doc: /* Return the value of environment variable VAR, as a string. |
1468 | VAR should be a string. Value is nil if VAR is undefined in the environment. | |
1469 | This function consults the variable ``process-environment'' for its value. */) | |
1470 | (var) | |
012c6fcb JA |
1471 | Lisp_Object var; |
1472 | { | |
1473 | char *value; | |
1474 | int valuelen; | |
1475 | ||
b7826503 | 1476 | CHECK_STRING (var); |
d5db4077 | 1477 | if (getenv_internal (SDATA (var), SBYTES (var), |
012c6fcb JA |
1478 | &value, &valuelen)) |
1479 | return make_string (value, valuelen); | |
1480 | else | |
1481 | return Qnil; | |
1482 | } | |
1483 | ||
1484 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1485 | callable from C. */ |
012c6fcb JA |
1486 | char * |
1487 | egetenv (var) | |
e576cab4 | 1488 | char *var; |
012c6fcb JA |
1489 | { |
1490 | char *value; | |
1491 | int valuelen; | |
1492 | ||
1493 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1494 | return value; | |
1495 | else | |
1496 | return 0; | |
1497 | } | |
1498 | ||
80856e74 JB |
1499 | #endif /* not VMS */ |
1500 | \f | |
8de15d69 | 1501 | /* This is run before init_cmdargs. */ |
177c0ea7 | 1502 | |
dfcf069d | 1503 | void |
8de15d69 RS |
1504 | init_callproc_1 () |
1505 | { | |
1506 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1507 | char *doc_dir = egetenv ("EMACSDOC"); |
1508 | ||
8de15d69 | 1509 | Vdata_directory |
177c0ea7 | 1510 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1511 | : PATH_DATA)); |
35a2f4b8 KH |
1512 | Vdoc_directory |
1513 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1514 | : PATH_DOC)); | |
9453ea7b | 1515 | |
e576cab4 | 1516 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1517 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1518 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1519 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1520 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1521 | } |
1522 | ||
e17f7533 | 1523 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1524 | |
dfcf069d | 1525 | void |
8de15d69 RS |
1526 | init_callproc () |
1527 | { | |
1528 | char *data_dir = egetenv ("EMACSDATA"); | |
177c0ea7 | 1529 | |
8de15d69 RS |
1530 | register char * sh; |
1531 | Lisp_Object tempdir; | |
1532 | ||
9cc4fad5 | 1533 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1534 | { |
05630743 RS |
1535 | /* Add to the path the lib-src subdir of the installation dir. */ |
1536 | Lisp_Object tem; | |
1537 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1538 | Vinstallation_directory); | |
bad95d8f | 1539 | #ifndef DOS_NT |
1a6640ec | 1540 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc | 1541 | if (NILP (Fmember (tem, Vexec_path))) |
70ec1377 RS |
1542 | { |
1543 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); | |
1544 | Vexec_path = Fcons (tem, Vexec_path); | |
1545 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
1546 | } | |
177c0ea7 | 1547 | |
0fa248bc | 1548 | Vexec_directory = Ffile_name_as_directory (tem); |
bad95d8f | 1549 | #endif /* not DOS_NT */ |
8de15d69 | 1550 | |
e17f7533 RS |
1551 | /* Maybe use ../etc as well as ../lib-src. */ |
1552 | if (data_dir == 0) | |
1553 | { | |
1554 | tem = Fexpand_file_name (build_string ("etc"), | |
1555 | Vinstallation_directory); | |
1556 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1557 | } |
1558 | } | |
7e933683 RS |
1559 | |
1560 | /* Look for the files that should be in etc. We don't use | |
1561 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1562 | near the executable, and they are never in the build |
7e933683 RS |
1563 | directory when that's different from the source directory. |
1564 | ||
1565 | Instead, if these files are not in the nominal place, we try the | |
1566 | source directory. */ | |
1567 | if (data_dir == 0) | |
1568 | { | |
70ec1377 | 1569 | Lisp_Object tem, tem1, srcdir; |
7e933683 | 1570 | |
70ec1377 RS |
1571 | srcdir = Fexpand_file_name (build_string ("../src/"), |
1572 | build_string (PATH_DUMPLOADSEARCH)); | |
7e933683 RS |
1573 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); |
1574 | tem1 = Ffile_exists_p (tem); | |
70ec1377 | 1575 | if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1)) |
7e933683 | 1576 | { |
70ec1377 | 1577 | Lisp_Object newdir; |
7e933683 RS |
1578 | newdir = Fexpand_file_name (build_string ("../etc/"), |
1579 | build_string (PATH_DUMPLOADSEARCH)); | |
1580 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1581 | tem1 = Ffile_exists_p (tem); | |
1582 | if (!NILP (tem1)) | |
1583 | Vdata_directory = newdir; | |
1584 | } | |
1585 | } | |
80856e74 | 1586 | |
d883eb62 RS |
1587 | #ifndef CANNOT_DUMP |
1588 | if (initialized) | |
1589 | #endif | |
1590 | { | |
1591 | tempdir = Fdirectory_file_name (Vexec_directory); | |
d5db4077 | 1592 | if (access (SDATA (tempdir), 0) < 0) |
d883eb62 RS |
1593 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", |
1594 | Vexec_directory); | |
1595 | } | |
80856e74 | 1596 | |
e576cab4 | 1597 | tempdir = Fdirectory_file_name (Vdata_directory); |
d5db4077 | 1598 | if (access (SDATA (tempdir), 0) < 0) |
76d5c6cf RS |
1599 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1600 | Vdata_directory); | |
e576cab4 | 1601 | |
80856e74 JB |
1602 | #ifdef VMS |
1603 | Vshell_file_name = build_string ("*dcl*"); | |
1604 | #else | |
e576cab4 | 1605 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1606 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1607 | #endif | |
8abd035b RS |
1608 | |
1609 | #ifdef VMS | |
1610 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1611 | #else | |
1612 | if (getenv ("TMPDIR")) | |
1613 | { | |
1614 | char *dir = getenv ("TMPDIR"); | |
1615 | Vtemp_file_name_pattern | |
1616 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1617 | build_string (dir)); | |
1618 | } | |
1619 | else | |
1620 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1621 | #endif | |
63789758 | 1622 | |
40b49d4b JB |
1623 | #ifdef DOS_NT |
1624 | Vshared_game_score_directory = Qnil; | |
1625 | #else | |
63789758 RS |
1626 | Vshared_game_score_directory = build_string (PATH_GAME); |
1627 | if (NILP (Ffile_directory_p (Vshared_game_score_directory))) | |
1628 | Vshared_game_score_directory = Qnil; | |
40b49d4b | 1629 | #endif |
9fefd2ba JB |
1630 | } |
1631 | ||
dfcf069d | 1632 | void |
9fefd2ba JB |
1633 | set_process_environment () |
1634 | { | |
1635 | register char **envp; | |
80856e74 | 1636 | |
80856e74 JB |
1637 | Vprocess_environment = Qnil; |
1638 | #ifndef CANNOT_DUMP | |
1639 | if (initialized) | |
1640 | #endif | |
1641 | for (envp = environ; *envp; envp++) | |
1642 | Vprocess_environment = Fcons (build_string (*envp), | |
1643 | Vprocess_environment); | |
80856e74 JB |
1644 | } |
1645 | ||
dfcf069d | 1646 | void |
80856e74 JB |
1647 | syms_of_callproc () |
1648 | { | |
bad95d8f | 1649 | #ifdef DOS_NT |
093650fe RS |
1650 | Qbuffer_file_type = intern ("buffer-file-type"); |
1651 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1652 | #endif /* DOS_NT */ |
7e6c2178 | 1653 | |
80856e74 | 1654 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
fdb82f93 PJ |
1655 | doc: /* *File name to load inferior shells from. |
1656 | Initialized from the SHELL environment variable. */); | |
80856e74 JB |
1657 | |
1658 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
fdb82f93 PJ |
1659 | doc: /* *List of directories to search programs to run in subprocesses. |
1660 | Each element is a string (directory name) or nil (try default directory). */); | |
80856e74 | 1661 | |
b81a1b72 | 1662 | DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, |
fdb82f93 PJ |
1663 | doc: /* *List of suffixes to try to find executable file names. |
1664 | Each element is a string. */); | |
33d5af99 | 1665 | Vexec_suffixes = Qnil; |
b81a1b72 | 1666 | |
80856e74 | 1667 | DEFVAR_LISP ("exec-directory", &Vexec_directory, |
fdb82f93 PJ |
1668 | doc: /* Directory for executables for Emacs to invoke. |
1669 | More generally, this includes any architecture-dependent files | |
1670 | that are built and installed from the Emacs distribution. */); | |
e576cab4 JB |
1671 | |
1672 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
fdb82f93 PJ |
1673 | doc: /* Directory of machine-independent files that come with GNU Emacs. |
1674 | These are files intended for Emacs to use while it runs. */); | |
80856e74 | 1675 | |
35a2f4b8 | 1676 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
fdb82f93 PJ |
1677 | doc: /* Directory containing the DOC file that comes with GNU Emacs. |
1678 | This is usually the same as data-directory. */); | |
35a2f4b8 | 1679 | |
ed61592a | 1680 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
fdb82f93 PJ |
1681 | doc: /* For internal use by the build procedure only. |
1682 | This is the name of the directory in which the build procedure installed | |
1683 | Emacs's info files; the default value for Info-default-directory-list | |
1684 | includes this. */); | |
ed61592a JB |
1685 | Vconfigure_info_directory = build_string (PATH_INFO); |
1686 | ||
1e7ce61b | 1687 | DEFVAR_LISP ("shared-game-score-directory", &Vshared_game_score_directory, |
b065672a CW |
1688 | doc: /* Directory of score files for games which come with GNU Emacs. |
1689 | If this variable is nil, then Emacs is unable to use a shared directory. */); | |
40b49d4b JB |
1690 | #ifdef DOS_NT |
1691 | Vshared_game_score_directory = Qnil; | |
1692 | #else | |
63789758 | 1693 | Vshared_game_score_directory = build_string (PATH_GAME); |
40b49d4b | 1694 | #endif |
b065672a | 1695 | |
8abd035b | 1696 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
fdb82f93 PJ |
1697 | doc: /* Pattern for making names for temporary files. |
1698 | This is used by `call-process-region'. */); | |
0537ec48 | 1699 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1700 | |
80856e74 | 1701 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
fdb82f93 PJ |
1702 | doc: /* List of environment variables for subprocesses to inherit. |
1703 | Each element should be a string of the form ENVVARNAME=VALUE. | |
1704 | If multiple entries define the same variable, the first one always | |
1705 | takes precedence. | |
1706 | The environment which Emacs inherits is placed in this variable | |
776a24a1 DL |
1707 | when Emacs starts. |
1708 | Non-ASCII characters are encoded according to the initial value of | |
1709 | `locale-coding-system', i.e. the elements must normally be decoded for use. | |
1710 | See `setenv' and `getenv'. */); | |
80856e74 JB |
1711 | |
1712 | #ifndef VMS | |
1713 | defsubr (&Scall_process); | |
83fa009c | 1714 | defsubr (&Sgetenv_internal); |
986ffb24 | 1715 | #endif |
e576cab4 | 1716 | defsubr (&Scall_process_region); |
80856e74 | 1717 | } |
ab5796a9 MB |
1718 | |
1719 | /* arch-tag: 769b8045-1df7-4d2b-8968-e3fb49017f95 | |
1720 | (do not change this comment) */ |