Commit | Line | Data |
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80856e74 | 1 | /* Synchronous subprocess invocation for GNU Emacs. |
7bdba03c GM |
2 | Copyright (C) 1985,86,87,88,93,94,95,99, 2000, 2001 |
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 JB |
44 | #include <sys/file.h> |
45 | #ifdef USG5 | |
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" |
80856e74 | 86 | |
5f027cea EZ |
87 | #ifdef MSDOS |
88 | #include "msdos.h" | |
89 | #endif | |
90 | ||
80856e74 JB |
91 | #ifdef VMS |
92 | extern noshare char **environ; | |
93 | #else | |
03695ace | 94 | #ifndef USE_CRT_DLL |
80856e74 JB |
95 | extern char **environ; |
96 | #endif | |
03695ace | 97 | #endif |
80856e74 | 98 | |
f95c3f91 | 99 | #ifdef HAVE_SETPGID |
2b7e8799 | 100 | #if !defined (USG) || defined (BSD_PGRPS) |
320695d8 | 101 | #undef setpgrp |
f95c3f91 GM |
102 | #define setpgrp setpgid |
103 | #endif | |
2b7e8799 | 104 | #endif |
f95c3f91 | 105 | |
b81a1b72 SM |
106 | Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes; |
107 | Lisp_Object Vdata_directory, Vdoc_directory; | |
ed61592a | 108 | Lisp_Object Vconfigure_info_directory; |
8abd035b | 109 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
110 | |
111 | Lisp_Object Vshell_file_name; | |
112 | ||
80856e74 | 113 | Lisp_Object Vprocess_environment; |
80856e74 | 114 | |
bad95d8f | 115 | #ifdef DOS_NT |
093650fe | 116 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 117 | #endif /* DOS_NT */ |
093650fe | 118 | |
80856e74 JB |
119 | /* True iff we are about to fork off a synchronous process or if we |
120 | are waiting for it. */ | |
121 | int synch_process_alive; | |
122 | ||
123 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
124 | char *synch_process_death; | |
125 | ||
126 | /* If synch_process_death is zero, | |
127 | this is exit code of synchronous subprocess. */ | |
128 | int synch_process_retcode; | |
8de15d69 RS |
129 | |
130 | extern Lisp_Object Vdoc_file_name; | |
89e1ec1d | 131 | |
8d024345 | 132 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
80856e74 | 133 | \f |
37d54121 RS |
134 | /* Clean up when exiting Fcall_process. |
135 | On MSDOS, delete the temporary file on any kind of termination. | |
136 | On Unix, kill the process and any children on termination by signal. */ | |
137 | ||
138 | /* Nonzero if this is termination due to exit. */ | |
139 | static int call_process_exited; | |
140 | ||
80856e74 JB |
141 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
142 | ||
d177f194 JB |
143 | static Lisp_Object |
144 | call_process_kill (fdpid) | |
145 | Lisp_Object fdpid; | |
146 | { | |
68c45bf0 | 147 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
148 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
149 | synch_process_alive = 0; | |
150 | return Qnil; | |
151 | } | |
152 | ||
80856e74 JB |
153 | Lisp_Object |
154 | call_process_cleanup (fdpid) | |
155 | Lisp_Object fdpid; | |
156 | { | |
052062e0 | 157 | #if defined (MSDOS) || defined (macintosh) |
7e6c2178 | 158 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
159 | register Lisp_Object file; |
160 | file = Fcdr (fdpid); | |
68c45bf0 | 161 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 RS |
162 | if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) |
163 | unlink (XSTRING (file)->data); | |
052062e0 | 164 | #else /* not MSDOS and not macintosh */ |
d177f194 JB |
165 | register int pid = XFASTINT (Fcdr (fdpid)); |
166 | ||
37d54121 | 167 | if (call_process_exited) |
6b6e798b | 168 | { |
68c45bf0 | 169 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
170 | return Qnil; |
171 | } | |
37d54121 | 172 | |
d177f194 JB |
173 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
174 | { | |
175 | int count = specpdl_ptr - specpdl; | |
176 | record_unwind_protect (call_process_kill, fdpid); | |
177 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
178 | immediate_quit = 1; | |
179 | QUIT; | |
180 | wait_for_termination (pid); | |
181 | immediate_quit = 0; | |
182 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
183 | message1 ("Waiting for process to die...done"); | |
184 | } | |
80856e74 | 185 | synch_process_alive = 0; |
68c45bf0 | 186 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 187 | #endif /* not MSDOS */ |
80856e74 JB |
188 | return Qnil; |
189 | } | |
190 | ||
191 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
fdb82f93 PJ |
192 | doc: /* Call PROGRAM synchronously in separate process. |
193 | The remaining arguments are optional. | |
194 | The program's input comes from file INFILE (nil means `/dev/null'). | |
195 | Insert output in BUFFER before point; t means current buffer; | |
196 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
197 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
198 | REAL-BUFFER says what to do with standard output, as above, | |
199 | while STDERR-FILE says what to do with standard error in the child. | |
200 | STDERR-FILE may be nil (discard standard error output), | |
201 | t (mix it with ordinary output), or a file name string. | |
202 | ||
203 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
204 | Remaining arguments are strings passed as command arguments to PROGRAM. | |
205 | ||
206 | If BUFFER is 0, `call-process' returns immediately with value nil. | |
207 | Otherwise it waits for PROGRAM to terminate | |
208 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
209 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
210 | ||
211 | usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 212 | (nargs, args) |
80856e74 JB |
213 | int nargs; |
214 | register Lisp_Object *args; | |
215 | { | |
58616e67 | 216 | Lisp_Object infile, buffer, current_dir, display, path; |
80856e74 JB |
217 | int fd[2]; |
218 | int filefd; | |
219 | register int pid; | |
6e3bfbb2 RS |
220 | char buf[16384]; |
221 | char *bufptr = buf; | |
222 | int bufsize = 16384; | |
80856e74 | 223 | int count = specpdl_ptr - specpdl; |
2d607244 | 224 | |
80856e74 JB |
225 | register unsigned char **new_argv |
226 | = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
227 | struct buffer *old = current_buffer; | |
39eaa782 RS |
228 | /* File to use for stderr in the child. |
229 | t means use same as standard output. */ | |
230 | Lisp_Object error_file; | |
7e6c2178 RS |
231 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
232 | char *outf, *tempfile; | |
233 | int outfilefd; | |
234 | #endif | |
052062e0 RS |
235 | #ifdef macintosh |
236 | char *tempfile; | |
237 | int outfilefd; | |
238 | #endif | |
80856e74 JB |
239 | #if 0 |
240 | int mask; | |
241 | #endif | |
32d08644 KH |
242 | struct coding_system process_coding; /* coding-system of process output */ |
243 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
244 | /* Set to the return value of Ffind_operation_coding_system. */ |
245 | Lisp_Object coding_systems; | |
246 | ||
247 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
248 | coding_systems = Qt; | |
32d08644 | 249 | |
80856e74 JB |
250 | CHECK_STRING (args[0], 0); |
251 | ||
39eaa782 RS |
252 | error_file = Qt; |
253 | ||
7e6c2178 RS |
254 | #ifndef subprocesses |
255 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
3ffde7d6 | 256 | if (nargs >= 3 |
09ffb8b5 | 257 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
258 | error ("Operating system cannot handle asynchronous subprocesses"); |
259 | #endif /* subprocesses */ | |
260 | ||
09494912 | 261 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
262 | { |
263 | Lisp_Object val, *args2; | |
32d08644 KH |
264 | int i; |
265 | ||
266 | /* If arguments are supplied, we may have to encode them. */ | |
267 | if (nargs >= 5) | |
268 | { | |
30d57b8e RS |
269 | int must_encode = 0; |
270 | ||
e7c1c20e RS |
271 | for (i = 4; i < nargs; i++) |
272 | CHECK_STRING (args[i], i); | |
273 | ||
a2286b5c | 274 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
275 | if (STRING_MULTIBYTE (args[i])) |
276 | must_encode = 1; | |
277 | ||
beacaab3 KH |
278 | if (!NILP (Vcoding_system_for_write)) |
279 | val = Vcoding_system_for_write; | |
30d57b8e | 280 | else if (! must_encode) |
beacaab3 KH |
281 | val = Qnil; |
282 | else | |
32d08644 KH |
283 | { |
284 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
285 | args2[0] = Qcall_process; | |
286 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 287 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 288 | if (CONSP (coding_systems)) |
70949dac | 289 | val = XCDR (coding_systems); |
776b95cb | 290 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 291 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
292 | else |
293 | val = Qnil; | |
32d08644 KH |
294 | } |
295 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); | |
296 | } | |
32d08644 KH |
297 | } |
298 | ||
e576cab4 JB |
299 | if (nargs >= 2 && ! NILP (args[1])) |
300 | { | |
301 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
302 | CHECK_STRING (infile, 1); | |
303 | } | |
80856e74 | 304 | else |
5437e9f9 | 305 | infile = build_string (NULL_DEVICE); |
80856e74 | 306 | |
e576cab4 JB |
307 | if (nargs >= 3) |
308 | { | |
39eaa782 RS |
309 | buffer = args[2]; |
310 | ||
311 | /* If BUFFER is a list, its meaning is | |
312 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
313 | if (CONSP (buffer)) | |
314 | { | |
70949dac | 315 | if (CONSP (XCDR (buffer))) |
45be8a1e | 316 | { |
a9d4f28a | 317 | Lisp_Object stderr_file; |
70949dac | 318 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
319 | |
320 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
321 | error_file = stderr_file; | |
322 | else | |
323 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
324 | } | |
325 | ||
70949dac | 326 | buffer = XCAR (buffer); |
39eaa782 | 327 | } |
044512ed | 328 | |
39eaa782 RS |
329 | if (!(EQ (buffer, Qnil) |
330 | || EQ (buffer, Qt) | |
3ffde7d6 | 331 | || INTEGERP (buffer))) |
e576cab4 | 332 | { |
39eaa782 RS |
333 | Lisp_Object spec_buffer; |
334 | spec_buffer = buffer; | |
50fe359b | 335 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
336 | /* Mention the buffer name for a better error message. */ |
337 | if (NILP (buffer)) | |
338 | CHECK_BUFFER (spec_buffer, 2); | |
e576cab4 JB |
339 | CHECK_BUFFER (buffer, 2); |
340 | } | |
341 | } | |
342 | else | |
343 | buffer = Qnil; | |
80856e74 | 344 | |
58616e67 JB |
345 | /* Make sure that the child will be able to chdir to the current |
346 | buffer's current directory, or its unhandled equivalent. We | |
347 | can't just have the child check for an error when it does the | |
348 | chdir, since it's in a vfork. | |
349 | ||
350 | We have to GCPRO around this because Fexpand_file_name, | |
351 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
352 | might call a file name handling function. The argument list is | |
353 | protected by the caller, so all we really have to worry about is | |
354 | buffer. */ | |
355 | { | |
356 | struct gcpro gcpro1, gcpro2, gcpro3; | |
357 | ||
358 | current_dir = current_buffer->directory; | |
359 | ||
360 | GCPRO3 (infile, buffer, current_dir); | |
361 | ||
c52b0b34 KH |
362 | current_dir |
363 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
364 | Qnil); | |
58616e67 JB |
365 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
366 | report_file_error ("Setting current directory", | |
367 | Fcons (current_buffer->directory, Qnil)); | |
368 | ||
369 | UNGCPRO; | |
370 | } | |
371 | ||
e576cab4 | 372 | display = nargs >= 4 ? args[3] : Qnil; |
80856e74 | 373 | |
68c45bf0 | 374 | filefd = emacs_open (XSTRING (infile)->data, O_RDONLY, 0); |
80856e74 JB |
375 | if (filefd < 0) |
376 | { | |
e576cab4 | 377 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
378 | } |
379 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
380 | { |
381 | struct gcpro gcpro1; | |
382 | ||
383 | GCPRO1 (current_dir); | |
b81a1b72 | 384 | openp (Vexec_path, args[0], Vexec_suffixes, &path, 1); |
c52b0b34 KH |
385 | UNGCPRO; |
386 | } | |
012c6fcb | 387 | if (NILP (path)) |
80856e74 | 388 | { |
68c45bf0 | 389 | emacs_close (filefd); |
80856e74 JB |
390 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
391 | } | |
392 | new_argv[0] = XSTRING (path)->data; | |
c364e618 KH |
393 | if (nargs > 4) |
394 | { | |
395 | register int i; | |
c5bfa12b | 396 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 397 | |
c5bfa12b KH |
398 | GCPRO3 (infile, buffer, current_dir); |
399 | argument_coding.dst_multibyte = 0; | |
400 | for (i = 4; i < nargs; i++) | |
c364e618 | 401 | { |
c5bfa12b KH |
402 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
403 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
c364e618 | 404 | { |
c5bfa12b KH |
405 | /* We must encode this argument. */ |
406 | args[i] = encode_coding_string (args[i], &argument_coding, 1); | |
407 | if (argument_coding.type == coding_type_ccl) | |
408 | setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil); | |
c364e618 | 409 | } |
c5bfa12b | 410 | new_argv[i - 3] = XSTRING (args[i])->data; |
c364e618 | 411 | } |
c5bfa12b | 412 | UNGCPRO; |
db54baaa | 413 | new_argv[nargs - 3] = 0; |
c364e618 | 414 | } |
db54baaa KH |
415 | else |
416 | new_argv[1] = 0; | |
80856e74 | 417 | |
7e6c2178 | 418 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 419 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
420 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
421 | else | |
422 | { | |
423 | tempfile = alloca (20); | |
424 | *tempfile = '\0'; | |
425 | } | |
426 | dostounix_filename (tempfile); | |
427 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') | |
428 | strcat (tempfile, "/"); | |
429 | strcat (tempfile, "detmp.XXX"); | |
430 | mktemp (tempfile); | |
431 | ||
432 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
433 | if (outfilefd < 0) | |
434 | { | |
68c45bf0 | 435 | emacs_close (filefd); |
6f89d28a MB |
436 | report_file_error ("Opening process output file", |
437 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 438 | } |
6f89d28a | 439 | fd[0] = filefd; |
2610078a | 440 | fd[1] = outfilefd; |
6f89d28a | 441 | #endif /* MSDOS */ |
7e6c2178 | 442 | |
052062e0 RS |
443 | #ifdef macintosh |
444 | /* Since we don't have pipes on the Mac, create a temporary file to | |
445 | hold the output of the subprocess. */ | |
446 | tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
447 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, | |
448 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
449 | ||
450 | mktemp (tempfile); | |
451 | ||
452 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
453 | if (outfilefd < 0) | |
454 | { | |
455 | close (filefd); | |
456 | report_file_error ("Opening process output file", | |
457 | Fcons (build_string (tempfile), Qnil)); | |
458 | } | |
459 | fd[0] = filefd; | |
460 | fd[1] = outfilefd; | |
461 | #endif /* macintosh */ | |
462 | ||
d50d3dc8 | 463 | if (INTEGERP (buffer)) |
68c45bf0 | 464 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
465 | else |
466 | { | |
7e6c2178 | 467 | #ifndef MSDOS |
052062e0 | 468 | #ifndef macintosh |
db92b288 GM |
469 | errno = 0; |
470 | if (pipe (fd) == -1) | |
471 | { | |
472 | emacs_close (filefd); | |
473 | report_file_error ("Creating process pipe", Qnil); | |
474 | } | |
7e6c2178 | 475 | #endif |
052062e0 | 476 | #endif |
80856e74 JB |
477 | #if 0 |
478 | /* Replaced by close_process_descs */ | |
479 | set_exclusive_use (fd[0]); | |
480 | #endif | |
481 | } | |
482 | ||
483 | { | |
484 | /* child_setup must clobber environ in systems with true vfork. | |
485 | Protect it from permanent change. */ | |
486 | register char **save_environ = environ; | |
487 | register int fd1 = fd[1]; | |
39eaa782 | 488 | int fd_error = fd1; |
80856e74 JB |
489 | |
490 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 491 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
492 | #endif |
493 | ||
494 | /* Record that we're about to create a synchronous process. */ | |
495 | synch_process_alive = 1; | |
496 | ||
5c03767e RS |
497 | /* These vars record information from process termination. |
498 | Clear them now before process can possibly terminate, | |
499 | to avoid timing error if process terminates soon. */ | |
500 | synch_process_death = 0; | |
501 | synch_process_retcode = 0; | |
502 | ||
39eaa782 | 503 | if (NILP (error_file)) |
68c45bf0 | 504 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
505 | else if (STRINGP (error_file)) |
506 | { | |
507 | #ifdef DOS_NT | |
68c45bf0 PE |
508 | fd_error = emacs_open (XSTRING (error_file)->data, |
509 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
510 | S_IREAD | S_IWRITE); | |
39eaa782 RS |
511 | #else /* not DOS_NT */ |
512 | fd_error = creat (XSTRING (error_file)->data, 0666); | |
513 | #endif /* not DOS_NT */ | |
514 | } | |
515 | ||
516 | if (fd_error < 0) | |
517 | { | |
68c45bf0 | 518 | emacs_close (filefd); |
6f89d28a | 519 | if (fd[0] != filefd) |
68c45bf0 | 520 | emacs_close (fd[0]); |
39eaa782 | 521 | if (fd1 >= 0) |
68c45bf0 | 522 | emacs_close (fd1); |
6f89d28a MB |
523 | #ifdef MSDOS |
524 | unlink (tempfile); | |
525 | #endif | |
526 | report_file_error ("Cannot redirect stderr", | |
527 | Fcons ((NILP (error_file) | |
528 | ? build_string (NULL_DEVICE) : error_file), | |
529 | Qnil)); | |
39eaa782 | 530 | } |
89e1ec1d | 531 | |
8d024345 | 532 | current_dir = ENCODE_FILE (current_dir); |
89e1ec1d | 533 | |
052062e0 RS |
534 | #ifdef macintosh |
535 | { | |
536 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
537 | a child_setup as for MSDOS and other platforms. Note that this | |
538 | code does not handle passing the environment to the synchronous | |
539 | Mac subprocess. */ | |
540 | char *infn, *outfn, *errfn, *currdn; | |
541 | ||
542 | /* close these files so subprocess can write to them */ | |
543 | close (outfilefd); | |
544 | if (fd_error != outfilefd) | |
545 | close (fd_error); | |
546 | fd1 = -1; /* No harm in closing that one! */ | |
547 | ||
548 | infn = XSTRING (infile)->data; | |
549 | outfn = tempfile; | |
550 | if (NILP (error_file)) | |
551 | errfn = NULL_DEVICE; | |
552 | else if (EQ (Qt, error_file)) | |
553 | errfn = outfn; | |
554 | else | |
555 | errfn = XSTRING (error_file)->data; | |
556 | currdn = XSTRING (current_dir)->data; | |
557 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); | |
558 | ||
559 | /* Record that the synchronous process exited and note its | |
560 | termination status. */ | |
561 | synch_process_alive = 0; | |
562 | synch_process_retcode = pid; | |
563 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 564 | { |
ca9c0567 | 565 | synchronize_system_messages_locale (); |
68c45bf0 PE |
566 | synch_process_death = strerror (errno); |
567 | } | |
052062e0 RS |
568 | |
569 | /* Since CRLF is converted to LF within `decode_coding', we can | |
570 | always open a file with binary mode. */ | |
571 | fd[0] = open (tempfile, O_BINARY); | |
572 | if (fd[0] < 0) | |
573 | { | |
574 | unlink (tempfile); | |
575 | close (filefd); | |
576 | report_file_error ("Cannot re-open temporary file", Qnil); | |
577 | } | |
578 | } | |
579 | #else /* not macintosh */ | |
2610078a | 580 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 581 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
582 | exit status, not its PID, so we assign it to `synch_process_retcode' |
583 | below. */ | |
c17c4250 EZ |
584 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
585 | 0, current_dir); | |
39eaa782 | 586 | |
2610078a KH |
587 | /* Record that the synchronous process exited and note its |
588 | termination status. */ | |
589 | synch_process_alive = 0; | |
590 | synch_process_retcode = pid; | |
591 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 592 | { |
ca9c0567 | 593 | synchronize_system_messages_locale (); |
68c45bf0 PE |
594 | synch_process_death = strerror (errno); |
595 | } | |
2610078a | 596 | |
68c45bf0 | 597 | emacs_close (outfilefd); |
2610078a | 598 | if (fd_error != outfilefd) |
68c45bf0 | 599 | emacs_close (fd_error); |
2610078a | 600 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
601 | /* Since CRLF is converted to LF within `decode_coding', we can |
602 | always open a file with binary mode. */ | |
68c45bf0 | 603 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
604 | if (fd[0] < 0) |
605 | { | |
606 | unlink (tempfile); | |
68c45bf0 | 607 | emacs_close (filefd); |
2610078a KH |
608 | report_file_error ("Cannot re-open temporary file", Qnil); |
609 | } | |
610 | #else /* not MSDOS */ | |
bad95d8f | 611 | #ifdef WINDOWSNT |
2d607244 RS |
612 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
613 | 0, current_dir); | |
bad95d8f | 614 | #else /* not WINDOWSNT */ |
80856e74 JB |
615 | pid = vfork (); |
616 | ||
617 | if (pid == 0) | |
618 | { | |
619 | if (fd[0] >= 0) | |
68c45bf0 | 620 | emacs_close (fd[0]); |
1e7963c7 RS |
621 | #ifdef HAVE_SETSID |
622 | setsid (); | |
623 | #endif | |
624 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
625 | setpgrp (); |
626 | #else | |
627 | setpgrp (pid, pid); | |
628 | #endif /* USG */ | |
2d607244 RS |
629 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
630 | 0, current_dir); | |
80856e74 | 631 | } |
bad95d8f | 632 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
633 | |
634 | /* The MSDOS case did this already. */ | |
635 | if (fd_error >= 0) | |
68c45bf0 | 636 | emacs_close (fd_error); |
2610078a | 637 | #endif /* not MSDOS */ |
052062e0 | 638 | #endif /* not macintosh */ |
80856e74 | 639 | |
80856e74 JB |
640 | environ = save_environ; |
641 | ||
6b6e798b RS |
642 | /* Close most of our fd's, but not fd[0] |
643 | since we will use that to read input from. */ | |
68c45bf0 | 644 | emacs_close (filefd); |
799abb26 | 645 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 646 | emacs_close (fd1); |
80856e74 JB |
647 | } |
648 | ||
649 | if (pid < 0) | |
650 | { | |
6b6e798b | 651 | if (fd[0] >= 0) |
68c45bf0 | 652 | emacs_close (fd[0]); |
80856e74 JB |
653 | report_file_error ("Doing vfork", Qnil); |
654 | } | |
655 | ||
d50d3dc8 | 656 | if (INTEGERP (buffer)) |
80856e74 | 657 | { |
6b6e798b | 658 | if (fd[0] >= 0) |
68c45bf0 | 659 | emacs_close (fd[0]); |
80856e74 | 660 | #ifndef subprocesses |
e576cab4 JB |
661 | /* If Emacs has been built with asynchronous subprocess support, |
662 | we don't need to do this, I think because it will then have | |
663 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
664 | wait_without_blocking (); |
665 | #endif /* subprocesses */ | |
80856e74 JB |
666 | return Qnil; |
667 | } | |
668 | ||
6b6e798b | 669 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
670 | call_process_exited = 0; |
671 | ||
052062e0 | 672 | #if defined(MSDOS) || defined(macintosh) |
7e6c2178 RS |
673 | /* MSDOS needs different cleanup information. */ |
674 | record_unwind_protect (call_process_cleanup, | |
675 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
676 | #else | |
80856e74 JB |
677 | record_unwind_protect (call_process_cleanup, |
678 | Fcons (make_number (fd[0]), make_number (pid))); | |
052062e0 | 679 | #endif /* not MSDOS and not macintosh */ |
80856e74 JB |
680 | |
681 | ||
d50d3dc8 | 682 | if (BUFFERP (buffer)) |
80856e74 JB |
683 | Fset_buffer (buffer); |
684 | ||
09494912 RS |
685 | if (NILP (buffer)) |
686 | { | |
687 | /* If BUFFER is nil, we must read process output once and then | |
688 | discard it, so setup coding system but with nil. */ | |
689 | setup_coding_system (Qnil, &process_coding); | |
690 | } | |
691 | else | |
692 | { | |
693 | Lisp_Object val, *args2; | |
694 | ||
695 | val = Qnil; | |
696 | if (!NILP (Vcoding_system_for_read)) | |
697 | val = Vcoding_system_for_read; | |
698 | else | |
699 | { | |
700 | if (EQ (coding_systems, Qt)) | |
701 | { | |
702 | int i; | |
703 | ||
704 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
705 | args2[0] = Qcall_process; | |
706 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
707 | coding_systems | |
708 | = Ffind_operation_coding_system (nargs + 1, args2); | |
709 | } | |
710 | if (CONSP (coding_systems)) | |
70949dac | 711 | val = XCAR (coding_systems); |
09494912 | 712 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 713 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
714 | else |
715 | val = Qnil; | |
716 | } | |
717 | setup_coding_system (Fcheck_coding_system (val), &process_coding); | |
718 | /* In unibyte mode, character code conversion should not take | |
719 | place but EOL conversion should. So, setup raw-text or one | |
720 | of the subsidiary according to the information just setup. */ | |
721 | if (NILP (current_buffer->enable_multibyte_characters) | |
722 | && !NILP (val)) | |
723 | setup_raw_text_coding_system (&process_coding); | |
724 | } | |
c5bfa12b KH |
725 | process_coding.src_multibyte = 0; |
726 | process_coding.dst_multibyte | |
727 | = (BUFFERP (buffer) | |
728 | ? ! NILP (XBUFFER (buffer)->enable_multibyte_characters) | |
729 | : ! NILP (current_buffer->enable_multibyte_characters)); | |
09494912 | 730 | |
80856e74 JB |
731 | immediate_quit = 1; |
732 | QUIT; | |
733 | ||
734 | { | |
735 | register int nread; | |
0ad477db | 736 | int first = 1; |
6e3bfbb2 | 737 | int total_read = 0; |
321fecde | 738 | int carryover = 0; |
7a7ab107 | 739 | int display_on_the_fly = !NILP (display) && INTERACTIVE; |
05b44e90 | 740 | struct coding_system saved_coding; |
f778b157 KH |
741 | int pt_orig = PT, pt_byte_orig = PT_BYTE; |
742 | int inserted; | |
05b44e90 KH |
743 | |
744 | saved_coding = process_coding; | |
f0b950cf KH |
745 | if (process_coding.composing != COMPOSITION_DISABLED) |
746 | coding_allocate_composition_data (&process_coding, PT); | |
60558b19 | 747 | while (1) |
80856e74 | 748 | { |
60558b19 RS |
749 | /* Repeatedly read until we've filled as much as possible |
750 | of the buffer size we have. But don't read | |
8e6208c5 | 751 | less than 1024--save that for the next bufferful. */ |
321fecde | 752 | nread = carryover; |
60558b19 | 753 | while (nread < bufsize - 1024) |
00fb3e95 | 754 | { |
68c45bf0 PE |
755 | int this_read = emacs_read (fd[0], bufptr + nread, |
756 | bufsize - nread); | |
60558b19 RS |
757 | |
758 | if (this_read < 0) | |
759 | goto give_up; | |
760 | ||
761 | if (this_read == 0) | |
7a7ab107 KH |
762 | { |
763 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
764 | break; | |
765 | } | |
60558b19 RS |
766 | |
767 | nread += this_read; | |
7a7ab107 | 768 | total_read += this_read; |
60558b19 | 769 | |
7a7ab107 KH |
770 | if (display_on_the_fly) |
771 | break; | |
772 | } | |
60558b19 RS |
773 | |
774 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 775 | immediate_quit = 0; |
6e3bfbb2 | 776 | |
012c6fcb | 777 | if (!NILP (buffer)) |
32d08644 | 778 | { |
c5bfa12b KH |
779 | if (! CODING_MAY_REQUIRE_DECODING (&process_coding)) |
780 | insert_1_both (bufptr, nread, nread, 0, 1, 0); | |
32d08644 KH |
781 | else |
782 | { /* We have to decode the input. */ | |
f0b950cf KH |
783 | int size; |
784 | char *decoding_buf; | |
32d08644 | 785 | |
f0b950cf KH |
786 | repeat_decoding: |
787 | size = decoding_buffer_size (&process_coding, nread); | |
788 | decoding_buf = (char *) xmalloc (size); | |
7bdba03c | 789 | |
2d892150 KH |
790 | if (process_coding.cmp_data) |
791 | process_coding.cmp_data->char_offset = PT; | |
7bdba03c | 792 | |
321fecde KH |
793 | decode_coding (&process_coding, bufptr, decoding_buf, |
794 | nread, size); | |
7bdba03c | 795 | |
7a7ab107 KH |
796 | if (display_on_the_fly |
797 | && saved_coding.type == coding_type_undecided | |
798 | && process_coding.type != coding_type_undecided) | |
799 | { | |
800 | /* We have detected some coding system. But, | |
801 | there's a possibility that the detection was | |
802 | done by insufficient data. So, we give up | |
803 | displaying on the fly. */ | |
a871dd58 | 804 | xfree (decoding_buf); |
7a7ab107 KH |
805 | display_on_the_fly = 0; |
806 | process_coding = saved_coding; | |
807 | carryover = nread; | |
808 | continue; | |
809 | } | |
7bdba03c | 810 | |
321fecde | 811 | if (process_coding.produced > 0) |
2d892150 KH |
812 | insert_1_both (decoding_buf, process_coding.produced_char, |
813 | process_coding.produced, 0, 1, 0); | |
a871dd58 | 814 | xfree (decoding_buf); |
7bdba03c GM |
815 | |
816 | if (process_coding.result == CODING_FINISH_INCONSISTENT_EOL) | |
817 | { | |
818 | Lisp_Object eol_type, coding; | |
819 | ||
820 | if (process_coding.eol_type == CODING_EOL_CR) | |
821 | { | |
822 | /* CRs have been replaced with LFs. Undo | |
823 | that in the text inserted above. */ | |
824 | unsigned char *p; | |
825 | ||
826 | move_gap_both (PT, PT_BYTE); | |
827 | ||
828 | p = BYTE_POS_ADDR (pt_byte_orig); | |
829 | for (; p < GPT_ADDR; ++p) | |
830 | if (*p == '\n') | |
831 | *p = '\r'; | |
832 | } | |
833 | else if (process_coding.eol_type == CODING_EOL_CRLF) | |
834 | { | |
835 | /* CR LFs have been replaced with LFs. Undo | |
836 | that by inserting CRs in front of LFs in | |
837 | the text inserted above. */ | |
838 | EMACS_INT bytepos, old_pt, old_pt_byte, nCR; | |
839 | ||
840 | old_pt = PT; | |
841 | old_pt_byte = PT_BYTE; | |
842 | nCR = 0; | |
843 | ||
844 | for (bytepos = PT_BYTE - 1; | |
845 | bytepos >= pt_byte_orig; | |
846 | --bytepos) | |
847 | if (FETCH_BYTE (bytepos) == '\n') | |
848 | { | |
849 | EMACS_INT charpos = BYTE_TO_CHAR (bytepos); | |
850 | TEMP_SET_PT_BOTH (charpos, bytepos); | |
851 | insert_1_both ("\r", 1, 1, 0, 1, 0); | |
852 | ++nCR; | |
853 | } | |
854 | ||
855 | TEMP_SET_PT_BOTH (old_pt + nCR, old_pt_byte + nCR); | |
856 | } | |
857 | ||
858 | /* Set the coding system symbol to that for | |
859 | Unix-like EOL. */ | |
860 | eol_type = Fget (saved_coding.symbol, Qeol_type); | |
861 | if (VECTORP (eol_type) | |
862 | && ASIZE (eol_type) == 3 | |
863 | && SYMBOLP (AREF (eol_type, CODING_EOL_LF))) | |
864 | coding = AREF (eol_type, CODING_EOL_LF); | |
865 | else | |
866 | coding = saved_coding.symbol; | |
867 | ||
868 | process_coding.symbol = coding; | |
869 | process_coding.eol_type = CODING_EOL_LF; | |
870 | process_coding.mode | |
871 | &= ~CODING_MODE_INHIBIT_INCONSISTENT_EOL; | |
872 | } | |
873 | ||
f0b950cf KH |
874 | nread -= process_coding.consumed; |
875 | carryover = nread; | |
321fecde | 876 | if (carryover > 0) |
c5bfa12b KH |
877 | /* As CARRYOVER should not be that large, we had |
878 | better avoid overhead of bcopy. */ | |
879 | BCOPY_SHORT (bufptr + process_coding.consumed, bufptr, | |
880 | carryover); | |
f0b950cf KH |
881 | if (process_coding.result == CODING_FINISH_INSUFFICIENT_CMP) |
882 | { | |
883 | /* The decoding ended because of insufficient data | |
884 | area to record information about composition. | |
885 | We must try decoding with additional data area | |
2d892150 | 886 | before reading more output for the process. */ |
f0b950cf KH |
887 | coding_allocate_composition_data (&process_coding, PT); |
888 | goto repeat_decoding; | |
889 | } | |
32d08644 KH |
890 | } |
891 | } | |
c5bfa12b | 892 | |
321fecde | 893 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 894 | break; |
6e3bfbb2 RS |
895 | |
896 | /* Make the buffer bigger as we continue to read more data, | |
897 | but not past 64k. */ | |
898 | if (bufsize < 64 * 1024 && total_read > 32 * bufsize) | |
899 | { | |
900 | bufsize *= 2; | |
901 | bufptr = (char *) alloca (bufsize); | |
902 | } | |
903 | ||
012c6fcb | 904 | if (!NILP (display) && INTERACTIVE) |
0ad477db RS |
905 | { |
906 | if (first) | |
907 | prepare_menu_bars (); | |
908 | first = 0; | |
3007ebfb | 909 | redisplay_preserve_echo_area (1); |
0ad477db | 910 | } |
80856e74 JB |
911 | immediate_quit = 1; |
912 | QUIT; | |
913 | } | |
60558b19 | 914 | give_up: ; |
80856e74 | 915 | |
2d892150 KH |
916 | if (!NILP (buffer) |
917 | && process_coding.cmp_data) | |
918 | { | |
919 | coding_restore_composition (&process_coding, Fcurrent_buffer ()); | |
920 | coding_free_composition_data (&process_coding); | |
921 | } | |
f0b950cf | 922 | |
838c9726 KH |
923 | { |
924 | int post_read_count = specpdl_ptr - specpdl; | |
925 | ||
926 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
927 | inserted = PT - pt_orig; | |
928 | TEMP_SET_PT_BOTH (pt_orig, pt_byte_orig); | |
929 | if (SYMBOLP (process_coding.post_read_conversion) | |
930 | && !NILP (Ffboundp (process_coding.post_read_conversion))) | |
931 | call1 (process_coding.post_read_conversion, make_number (inserted)); | |
f778b157 | 932 | |
838c9726 | 933 | Vlast_coding_system_used = process_coding.symbol; |
bbd29cfe | 934 | |
838c9726 KH |
935 | /* If the caller required, let the buffer inherit the |
936 | coding-system used to decode the process output. */ | |
937 | if (inherit_process_coding_system) | |
938 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
939 | make_number (total_read)); | |
940 | ||
941 | unbind_to (post_read_count, Qnil); | |
942 | } | |
3b440bb5 EZ |
943 | } |
944 | ||
80856e74 JB |
945 | /* Wait for it to terminate, unless it already has. */ |
946 | wait_for_termination (pid); | |
947 | ||
948 | immediate_quit = 0; | |
949 | ||
950 | set_buffer_internal (old); | |
951 | ||
37d54121 RS |
952 | /* Don't kill any children that the subprocess may have left behind |
953 | when exiting. */ | |
954 | call_process_exited = 1; | |
955 | ||
80856e74 JB |
956 | unbind_to (count, Qnil); |
957 | ||
80856e74 | 958 | if (synch_process_death) |
68c45bf0 PE |
959 | return code_convert_string_norecord (build_string (synch_process_death), |
960 | Vlocale_coding_system, 0); | |
80856e74 JB |
961 | return make_number (synch_process_retcode); |
962 | } | |
963 | #endif | |
964 | \f | |
9fefd2ba | 965 | static Lisp_Object |
80856e74 JB |
966 | delete_temp_file (name) |
967 | Lisp_Object name; | |
968 | { | |
2e3dc201 | 969 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 970 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 971 | internal_delete_file (name); |
320695d8 | 972 | return Qnil; |
80856e74 JB |
973 | } |
974 | ||
975 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
fdb82f93 PJ |
976 | 3, MANY, 0, |
977 | doc: /* Send text from START to END to a synchronous process running PROGRAM. | |
978 | The remaining arguments are optional. | |
979 | Delete the text if fourth arg DELETE is non-nil. | |
980 | ||
981 | Insert output in BUFFER before point; t means current buffer; | |
982 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
983 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
984 | REAL-BUFFER says what to do with standard output, as above, | |
985 | while STDERR-FILE says what to do with standard error in the child. | |
986 | STDERR-FILE may be nil (discard standard error output), | |
987 | t (mix it with ordinary output), or a file name string. | |
988 | ||
989 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
990 | Remaining args are passed to PROGRAM at startup as command args. | |
991 | ||
992 | If BUFFER is nil, `call-process-region' returns immediately with value nil. | |
993 | Otherwise it waits for PROGRAM to terminate | |
994 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
995 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
996 | ||
997 | usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 998 | (nargs, args) |
80856e74 JB |
999 | int nargs; |
1000 | register Lisp_Object *args; | |
1001 | { | |
39323a7e KH |
1002 | struct gcpro gcpro1; |
1003 | Lisp_Object filename_string; | |
1004 | register Lisp_Object start, end; | |
d3e81d0a | 1005 | int count = specpdl_ptr - specpdl; |
08ee4e87 | 1006 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 1007 | Lisp_Object coding_systems; |
32d08644 KH |
1008 | Lisp_Object val, *args2; |
1009 | int i; | |
bad95d8f | 1010 | #ifdef DOS_NT |
7e6c2178 | 1011 | char *tempfile; |
7e6c2178 RS |
1012 | char *outf = '\0'; |
1013 | ||
8a52365c EZ |
1014 | if ((outf = egetenv ("TMPDIR")) |
1015 | || (outf = egetenv ("TMP")) | |
1016 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
1017 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
1018 | else | |
1019 | { | |
1020 | tempfile = alloca (20); | |
1021 | *tempfile = '\0'; | |
1022 | } | |
0774fcf8 | 1023 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 1024 | strcat (tempfile, "/"); |
5711b547 RS |
1025 | if ('/' == DIRECTORY_SEP) |
1026 | dostounix_filename (tempfile); | |
1027 | else | |
1028 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
1029 | #ifdef WINDOWSNT |
1030 | strcat (tempfile, "emXXXXXX"); | |
1031 | #else | |
7e6c2178 | 1032 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 1033 | #endif |
bad95d8f | 1034 | #else /* not DOS_NT */ |
fc932ac6 | 1035 | char *tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
8abd035b | 1036 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, |
fc932ac6 | 1037 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
bad95d8f | 1038 | #endif /* not DOS_NT */ |
7e6c2178 | 1039 | |
09494912 RS |
1040 | coding_systems = Qt; |
1041 | ||
1ddc85a4 DL |
1042 | #ifdef HAVE_MKSTEMP |
1043 | { | |
1044 | int fd = mkstemp (tempfile); | |
1045 | if (fd == -1) | |
1046 | report_file_error ("Failed to open temporary file", | |
1047 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
1048 | else | |
1049 | close (fd); | |
1050 | } | |
1051 | #else | |
80856e74 | 1052 | mktemp (tempfile); |
1ddc85a4 | 1053 | #endif |
80856e74 JB |
1054 | |
1055 | filename_string = build_string (tempfile); | |
39323a7e | 1056 | GCPRO1 (filename_string); |
80856e74 JB |
1057 | start = args[0]; |
1058 | end = args[1]; | |
32d08644 | 1059 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
1060 | if (!NILP (Vcoding_system_for_write)) |
1061 | val = Vcoding_system_for_write; | |
1062 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
1063 | val = Qnil; |
1064 | else | |
beacaab3 | 1065 | { |
91489411 RS |
1066 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
1067 | args2[0] = Qcall_process_region; | |
1068 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
1069 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
1070 | if (CONSP (coding_systems)) | |
70949dac | 1071 | val = XCDR (coding_systems); |
91489411 | 1072 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1073 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 1074 | else |
91489411 | 1075 | val = Qnil; |
beacaab3 | 1076 | } |
32d08644 | 1077 | |
168afdaa RS |
1078 | { |
1079 | int count1 = specpdl_ptr - specpdl; | |
1080 | ||
1081 | specbind (intern ("coding-system-for-write"), val); | |
1082 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); | |
1083 | ||
1084 | unbind_to (count1, Qnil); | |
1085 | } | |
91489411 RS |
1086 | |
1087 | /* Note that Fcall_process takes care of binding | |
1088 | coding-system-for-read. */ | |
093650fe | 1089 | |
80856e74 JB |
1090 | record_unwind_protect (delete_temp_file, filename_string); |
1091 | ||
edf496dd | 1092 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
1093 | Fdelete_region (start, end); |
1094 | ||
edf496dd KH |
1095 | if (nargs > 3) |
1096 | { | |
1097 | args += 2; | |
1098 | nargs -= 2; | |
1099 | } | |
1100 | else | |
1101 | { | |
1102 | args[0] = args[2]; | |
1103 | nargs = 2; | |
1104 | } | |
1105 | args[1] = filename_string; | |
80856e74 | 1106 | |
edf496dd | 1107 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
1108 | } |
1109 | \f | |
1110 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
1111 | ||
dfcf069d AS |
1112 | static int relocate_fd (); |
1113 | ||
80856e74 JB |
1114 | /* This is the last thing run in a newly forked inferior |
1115 | either synchronous or asynchronous. | |
1116 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1117 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1118 | then exec another program based on new_argv. | |
1119 | ||
1120 | This function may change environ for the superior process. | |
1121 | Therefore, the superior process must save and restore the value | |
1122 | of environ around the vfork and the call to this function. | |
1123 | ||
80856e74 | 1124 | SET_PGRP is nonzero if we should put the subprocess into a separate |
e576cab4 JB |
1125 | process group. |
1126 | ||
1127 | CURRENT_DIR is an elisp string giving the path of the current | |
1128 | directory the subprocess should have. Since we can't really signal | |
1129 | a decent error from within the child, this should be verified as an | |
1130 | executable directory by the parent. */ | |
80856e74 | 1131 | |
dfcf069d | 1132 | int |
e576cab4 | 1133 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1134 | int in, out, err; |
1135 | register char **new_argv; | |
80856e74 | 1136 | int set_pgrp; |
e576cab4 | 1137 | Lisp_Object current_dir; |
80856e74 | 1138 | { |
e576cab4 | 1139 | char **env; |
7fcf7f05 | 1140 | char *pwd_var; |
bad95d8f RS |
1141 | #ifdef WINDOWSNT |
1142 | int cpid; | |
4252a4bd | 1143 | HANDLE handles[3]; |
bad95d8f | 1144 | #endif /* WINDOWSNT */ |
e576cab4 | 1145 | |
33abe2d9 | 1146 | int pid = getpid (); |
80856e74 | 1147 | |
68d10241 | 1148 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 JB |
1149 | { |
1150 | extern int emacs_priority; | |
1151 | ||
68d10241 RS |
1152 | if (emacs_priority < 0) |
1153 | nice (- emacs_priority); | |
4f0b9d49 | 1154 | } |
5b633aeb | 1155 | #endif |
80856e74 JB |
1156 | |
1157 | #ifdef subprocesses | |
1158 | /* Close Emacs's descriptors that this process should not have. */ | |
1159 | close_process_descs (); | |
1160 | #endif | |
c17c4250 EZ |
1161 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1162 | we will lose if we call close_load_descs here. */ | |
1163 | #ifndef DOS_NT | |
4458cebe | 1164 | close_load_descs (); |
c17c4250 | 1165 | #endif |
80856e74 JB |
1166 | |
1167 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1168 | that do not have true vfork or that have true (stack) alloca. | |
1169 | If using vfork and C_ALLOCA it is safe because that changes | |
1170 | the superior's static variables as if the superior had done alloca | |
1171 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1172 | { |
7fcf7f05 | 1173 | register char *temp; |
e576cab4 | 1174 | register int i; |
77d78be1 | 1175 | |
fc932ac6 | 1176 | i = STRING_BYTES (XSTRING (current_dir)); |
16425c4a EZ |
1177 | #ifdef MSDOS |
1178 | /* MSDOS must have all environment variables malloc'ed, because | |
1179 | low-level libc functions that launch subsidiary processes rely | |
1180 | on that. */ | |
1181 | pwd_var = (char *) xmalloc (i + 6); | |
1182 | #else | |
7fcf7f05 | 1183 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1184 | #endif |
7fcf7f05 RS |
1185 | temp = pwd_var + 4; |
1186 | bcopy ("PWD=", pwd_var, 4); | |
e576cab4 | 1187 | bcopy (XSTRING (current_dir)->data, temp, i); |
bad95d8f | 1188 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1189 | temp[i] = 0; |
1190 | ||
c17c4250 | 1191 | #ifndef DOS_NT |
e576cab4 JB |
1192 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1193 | the callers check the current directory before forking, this | |
1194 | should only return an error if the directory's permissions | |
1195 | are changed between the check and this chdir, but we should | |
1196 | at least check. */ | |
1197 | if (chdir (temp) < 0) | |
20b25e46 | 1198 | _exit (errno); |
b4c7684c | 1199 | #endif |
7fcf7f05 | 1200 | |
c17c4250 EZ |
1201 | #ifdef DOS_NT |
1202 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1203 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1204 | { | |
1205 | temp += 2; | |
1206 | i -= 2; | |
1207 | } | |
1208 | #endif | |
1209 | ||
7fcf7f05 | 1210 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1211 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1212 | temp[--i] = 0; |
e576cab4 | 1213 | } |
80856e74 | 1214 | |
80856e74 JB |
1215 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1216 | { | |
1217 | register Lisp_Object tem; | |
1218 | register char **new_env; | |
1219 | register int new_length; | |
1220 | ||
1221 | new_length = 0; | |
1222 | for (tem = Vprocess_environment; | |
70949dac KR |
1223 | CONSP (tem) && STRINGP (XCAR (tem)); |
1224 | tem = XCDR (tem)) | |
80856e74 JB |
1225 | new_length++; |
1226 | ||
7fcf7f05 RS |
1227 | /* new_length + 2 to include PWD and terminating 0. */ |
1228 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1229 | ||
1230 | /* If we have a PWD envvar, pass one down, | |
1231 | but with corrected value. */ | |
1232 | if (getenv ("PWD")) | |
1233 | *new_env++ = pwd_var; | |
80856e74 | 1234 | |
cd9565ba | 1235 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1236 | for (tem = Vprocess_environment; |
70949dac KR |
1237 | CONSP (tem) && STRINGP (XCAR (tem)); |
1238 | tem = XCDR (tem)) | |
cd9565ba RS |
1239 | { |
1240 | char **ep = env; | |
70949dac | 1241 | char *string = (char *) XSTRING (XCAR (tem))->data; |
cd9565ba RS |
1242 | /* See if this string duplicates any string already in the env. |
1243 | If so, don't put it in. | |
1244 | When an env var has multiple definitions, | |
1245 | we keep the definition that comes first in process-environment. */ | |
1246 | for (; ep != new_env; ep++) | |
1247 | { | |
1248 | char *p = *ep, *q = string; | |
1249 | while (1) | |
1250 | { | |
1251 | if (*q == 0) | |
1252 | /* The string is malformed; might as well drop it. */ | |
1253 | goto duplicate; | |
1254 | if (*q != *p) | |
1255 | break; | |
1256 | if (*q == '=') | |
1257 | goto duplicate; | |
1258 | p++, q++; | |
1259 | } | |
1260 | } | |
1261 | *new_env++ = string; | |
1262 | duplicate: ; | |
1263 | } | |
80856e74 JB |
1264 | *new_env = 0; |
1265 | } | |
bad95d8f RS |
1266 | #ifdef WINDOWSNT |
1267 | prepare_standard_handles (in, out, err, handles); | |
b4c7684c | 1268 | set_process_dir (XSTRING (current_dir)->data); |
bad95d8f | 1269 | #else /* not WINDOWSNT */ |
426b37ae JB |
1270 | /* Make sure that in, out, and err are not actually already in |
1271 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1272 | started with its standard in, out, or error closed, as might |
426b37ae | 1273 | happen under X. */ |
f29f9e4a RS |
1274 | { |
1275 | int oin = in, oout = out; | |
1276 | ||
1277 | /* We have to avoid relocating the same descriptor twice! */ | |
1278 | ||
1279 | in = relocate_fd (in, 3); | |
1280 | ||
1281 | if (out == oin) | |
1282 | out = in; | |
1283 | else | |
3e9367e7 | 1284 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1285 | |
1286 | if (err == oin) | |
1287 | err = in; | |
1288 | else if (err == oout) | |
1289 | err = out; | |
1290 | else | |
3e9367e7 | 1291 | err = relocate_fd (err, 3); |
f29f9e4a | 1292 | } |
426b37ae | 1293 | |
c17c4250 | 1294 | #ifndef MSDOS |
68c45bf0 PE |
1295 | emacs_close (0); |
1296 | emacs_close (1); | |
1297 | emacs_close (2); | |
80856e74 JB |
1298 | |
1299 | dup2 (in, 0); | |
1300 | dup2 (out, 1); | |
1301 | dup2 (err, 2); | |
68c45bf0 PE |
1302 | emacs_close (in); |
1303 | emacs_close (out); | |
1304 | emacs_close (err); | |
c17c4250 | 1305 | #endif /* not MSDOS */ |
bad95d8f | 1306 | #endif /* not WINDOWSNT */ |
80856e74 | 1307 | |
6b2cd868 | 1308 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1309 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1310 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1311 | #endif |
e576cab4 JB |
1312 | #else |
1313 | setpgrp (pid, pid); | |
1314 | #endif /* USG */ | |
a129418f RS |
1315 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1316 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 | 1317 | |
c17c4250 EZ |
1318 | #ifdef MSDOS |
1319 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
a3f0666f | 1320 | xfree (pwd_var); |
c17c4250 EZ |
1321 | if (pid == -1) |
1322 | /* An error occurred while trying to run the subprocess. */ | |
1323 | report_file_error ("Spawning child process", Qnil); | |
1324 | return pid; | |
1325 | #else /* not MSDOS */ | |
bad95d8f RS |
1326 | #ifdef WINDOWSNT |
1327 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1328 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1329 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1330 | if (cpid == -1) |
1331 | /* An error occurred while trying to spawn the process. */ | |
1332 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1333 | return cpid; |
1334 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1335 | /* execvp does not accept an environment arg so the only way |
1336 | to pass this environment is to set environ. Our caller | |
1337 | is responsible for restoring the ambient value of environ. */ | |
1338 | environ = env; | |
1339 | execvp (new_argv[0], new_argv); | |
1340 | ||
68c45bf0 PE |
1341 | emacs_write (1, "Can't exec program: ", 20); |
1342 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1343 | emacs_write (1, "\n", 1); | |
80856e74 | 1344 | _exit (1); |
bad95d8f | 1345 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1346 | #endif /* not MSDOS */ |
80856e74 JB |
1347 | } |
1348 | ||
a3833dfe | 1349 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1350 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1351 | static int |
a3833dfe KH |
1352 | relocate_fd (fd, minfd) |
1353 | int fd, minfd; | |
426b37ae | 1354 | { |
a3833dfe | 1355 | if (fd >= minfd) |
426b37ae JB |
1356 | return fd; |
1357 | else | |
1358 | { | |
1359 | int new = dup (fd); | |
1360 | if (new == -1) | |
1361 | { | |
20c018a0 | 1362 | char *message1 = "Error while setting up child: "; |
826c56ac | 1363 | char *errmessage = strerror (errno); |
20c018a0 | 1364 | char *message2 = "\n"; |
68c45bf0 PE |
1365 | emacs_write (2, message1, strlen (message1)); |
1366 | emacs_write (2, errmessage, strlen (errmessage)); | |
1367 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1368 | _exit (1); |
1369 | } | |
1370 | /* Note that we hold the original FD open while we recurse, | |
1371 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1372 | new = relocate_fd (new, minfd); |
68c45bf0 | 1373 | emacs_close (fd); |
426b37ae JB |
1374 | return new; |
1375 | } | |
1376 | } | |
1377 | ||
012c6fcb JA |
1378 | static int |
1379 | getenv_internal (var, varlen, value, valuelen) | |
1380 | char *var; | |
1381 | int varlen; | |
1382 | char **value; | |
1383 | int *valuelen; | |
1384 | { | |
1385 | Lisp_Object scan; | |
1386 | ||
70949dac | 1387 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1388 | { |
c1350752 KH |
1389 | Lisp_Object entry; |
1390 | ||
70949dac | 1391 | entry = XCAR (scan); |
d50d3dc8 | 1392 | if (STRINGP (entry) |
fc932ac6 | 1393 | && STRING_BYTES (XSTRING (entry)) > varlen |
012c6fcb | 1394 | && XSTRING (entry)->data[varlen] == '=' |
bad95d8f RS |
1395 | #ifdef WINDOWSNT |
1396 | /* NT environment variables are case insensitive. */ | |
a9971c6d | 1397 | && ! strnicmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1398 | #else /* not WINDOWSNT */ |
a9971c6d | 1399 | && ! bcmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1400 | #endif /* not WINDOWSNT */ |
a9971c6d | 1401 | ) |
012c6fcb JA |
1402 | { |
1403 | *value = (char *) XSTRING (entry)->data + (varlen + 1); | |
fc932ac6 | 1404 | *valuelen = STRING_BYTES (XSTRING (entry)) - (varlen + 1); |
012c6fcb JA |
1405 | return 1; |
1406 | } | |
1407 | } | |
1408 | ||
1409 | return 0; | |
1410 | } | |
1411 | ||
83fa009c | 1412 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0, |
fdb82f93 PJ |
1413 | doc: /* Return the value of environment variable VAR, as a string. |
1414 | VAR should be a string. Value is nil if VAR is undefined in the environment. | |
1415 | This function consults the variable ``process-environment'' for its value. */) | |
1416 | (var) | |
012c6fcb JA |
1417 | Lisp_Object var; |
1418 | { | |
1419 | char *value; | |
1420 | int valuelen; | |
1421 | ||
1422 | CHECK_STRING (var, 0); | |
fc932ac6 | 1423 | if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)), |
012c6fcb JA |
1424 | &value, &valuelen)) |
1425 | return make_string (value, valuelen); | |
1426 | else | |
1427 | return Qnil; | |
1428 | } | |
1429 | ||
1430 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1431 | callable from C. */ |
012c6fcb JA |
1432 | char * |
1433 | egetenv (var) | |
e576cab4 | 1434 | char *var; |
012c6fcb JA |
1435 | { |
1436 | char *value; | |
1437 | int valuelen; | |
1438 | ||
1439 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1440 | return value; | |
1441 | else | |
1442 | return 0; | |
1443 | } | |
1444 | ||
80856e74 JB |
1445 | #endif /* not VMS */ |
1446 | \f | |
8de15d69 | 1447 | /* This is run before init_cmdargs. */ |
7e6c2178 | 1448 | |
dfcf069d | 1449 | void |
8de15d69 RS |
1450 | init_callproc_1 () |
1451 | { | |
1452 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1453 | char *doc_dir = egetenv ("EMACSDOC"); |
1454 | ||
8de15d69 | 1455 | Vdata_directory |
7e6c2178 | 1456 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1457 | : PATH_DATA)); |
35a2f4b8 KH |
1458 | Vdoc_directory |
1459 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1460 | : PATH_DOC)); | |
9453ea7b | 1461 | |
e576cab4 | 1462 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1463 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1464 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1465 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1466 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1467 | } |
1468 | ||
e17f7533 | 1469 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1470 | |
dfcf069d | 1471 | void |
8de15d69 RS |
1472 | init_callproc () |
1473 | { | |
1474 | char *data_dir = egetenv ("EMACSDATA"); | |
1475 | ||
1476 | register char * sh; | |
1477 | Lisp_Object tempdir; | |
1478 | ||
9cc4fad5 | 1479 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1480 | { |
05630743 RS |
1481 | /* Add to the path the lib-src subdir of the installation dir. */ |
1482 | Lisp_Object tem; | |
1483 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1484 | Vinstallation_directory); | |
bad95d8f | 1485 | #ifndef DOS_NT |
1a6640ec | 1486 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc RS |
1487 | if (NILP (Fmember (tem, Vexec_path))) |
1488 | Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil)); | |
1489 | ||
1490 | Vexec_directory = Ffile_name_as_directory (tem); | |
bad95d8f | 1491 | #endif /* not DOS_NT */ |
8de15d69 | 1492 | |
e17f7533 RS |
1493 | /* Maybe use ../etc as well as ../lib-src. */ |
1494 | if (data_dir == 0) | |
1495 | { | |
1496 | tem = Fexpand_file_name (build_string ("etc"), | |
1497 | Vinstallation_directory); | |
1498 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1499 | } |
1500 | } | |
7e933683 RS |
1501 | |
1502 | /* Look for the files that should be in etc. We don't use | |
1503 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1504 | near the executable, and they are never in the build |
7e933683 RS |
1505 | directory when that's different from the source directory. |
1506 | ||
1507 | Instead, if these files are not in the nominal place, we try the | |
1508 | source directory. */ | |
1509 | if (data_dir == 0) | |
1510 | { | |
1511 | Lisp_Object tem, tem1, newdir; | |
1512 | ||
1513 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); | |
1514 | tem1 = Ffile_exists_p (tem); | |
1515 | if (NILP (tem1)) | |
1516 | { | |
1517 | newdir = Fexpand_file_name (build_string ("../etc/"), | |
1518 | build_string (PATH_DUMPLOADSEARCH)); | |
1519 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1520 | tem1 = Ffile_exists_p (tem); | |
1521 | if (!NILP (tem1)) | |
1522 | Vdata_directory = newdir; | |
1523 | } | |
1524 | } | |
80856e74 | 1525 | |
d883eb62 RS |
1526 | #ifndef CANNOT_DUMP |
1527 | if (initialized) | |
1528 | #endif | |
1529 | { | |
1530 | tempdir = Fdirectory_file_name (Vexec_directory); | |
1531 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
1532 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", | |
1533 | Vexec_directory); | |
1534 | } | |
80856e74 | 1535 | |
e576cab4 JB |
1536 | tempdir = Fdirectory_file_name (Vdata_directory); |
1537 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
76d5c6cf RS |
1538 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1539 | Vdata_directory); | |
e576cab4 | 1540 | |
80856e74 JB |
1541 | #ifdef VMS |
1542 | Vshell_file_name = build_string ("*dcl*"); | |
1543 | #else | |
e576cab4 | 1544 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1545 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1546 | #endif | |
8abd035b RS |
1547 | |
1548 | #ifdef VMS | |
1549 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1550 | #else | |
1551 | if (getenv ("TMPDIR")) | |
1552 | { | |
1553 | char *dir = getenv ("TMPDIR"); | |
1554 | Vtemp_file_name_pattern | |
1555 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1556 | build_string (dir)); | |
1557 | } | |
1558 | else | |
1559 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1560 | #endif | |
9fefd2ba JB |
1561 | } |
1562 | ||
dfcf069d | 1563 | void |
9fefd2ba JB |
1564 | set_process_environment () |
1565 | { | |
1566 | register char **envp; | |
80856e74 | 1567 | |
80856e74 JB |
1568 | Vprocess_environment = Qnil; |
1569 | #ifndef CANNOT_DUMP | |
1570 | if (initialized) | |
1571 | #endif | |
1572 | for (envp = environ; *envp; envp++) | |
1573 | Vprocess_environment = Fcons (build_string (*envp), | |
1574 | Vprocess_environment); | |
80856e74 JB |
1575 | } |
1576 | ||
dfcf069d | 1577 | void |
80856e74 JB |
1578 | syms_of_callproc () |
1579 | { | |
bad95d8f | 1580 | #ifdef DOS_NT |
093650fe RS |
1581 | Qbuffer_file_type = intern ("buffer-file-type"); |
1582 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1583 | #endif /* DOS_NT */ |
7e6c2178 | 1584 | |
80856e74 | 1585 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
fdb82f93 PJ |
1586 | doc: /* *File name to load inferior shells from. |
1587 | Initialized from the SHELL environment variable. */); | |
80856e74 JB |
1588 | |
1589 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
fdb82f93 PJ |
1590 | doc: /* *List of directories to search programs to run in subprocesses. |
1591 | Each element is a string (directory name) or nil (try default directory). */); | |
80856e74 | 1592 | |
b81a1b72 | 1593 | DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, |
fdb82f93 PJ |
1594 | doc: /* *List of suffixes to try to find executable file names. |
1595 | Each element is a string. */); | |
33d5af99 | 1596 | Vexec_suffixes = Qnil; |
b81a1b72 | 1597 | |
80856e74 | 1598 | DEFVAR_LISP ("exec-directory", &Vexec_directory, |
fdb82f93 PJ |
1599 | doc: /* Directory for executables for Emacs to invoke. |
1600 | More generally, this includes any architecture-dependent files | |
1601 | that are built and installed from the Emacs distribution. */); | |
e576cab4 JB |
1602 | |
1603 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
fdb82f93 PJ |
1604 | doc: /* Directory of machine-independent files that come with GNU Emacs. |
1605 | These are files intended for Emacs to use while it runs. */); | |
80856e74 | 1606 | |
35a2f4b8 | 1607 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
fdb82f93 PJ |
1608 | doc: /* Directory containing the DOC file that comes with GNU Emacs. |
1609 | This is usually the same as data-directory. */); | |
35a2f4b8 | 1610 | |
ed61592a | 1611 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
fdb82f93 PJ |
1612 | doc: /* For internal use by the build procedure only. |
1613 | This is the name of the directory in which the build procedure installed | |
1614 | Emacs's info files; the default value for Info-default-directory-list | |
1615 | includes this. */); | |
ed61592a JB |
1616 | Vconfigure_info_directory = build_string (PATH_INFO); |
1617 | ||
8abd035b | 1618 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
fdb82f93 PJ |
1619 | doc: /* Pattern for making names for temporary files. |
1620 | This is used by `call-process-region'. */); | |
0537ec48 | 1621 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1622 | |
80856e74 | 1623 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
fdb82f93 PJ |
1624 | doc: /* List of environment variables for subprocesses to inherit. |
1625 | Each element should be a string of the form ENVVARNAME=VALUE. | |
1626 | If multiple entries define the same variable, the first one always | |
1627 | takes precedence. | |
1628 | The environment which Emacs inherits is placed in this variable | |
1629 | when Emacs starts. */); | |
80856e74 JB |
1630 | |
1631 | #ifndef VMS | |
1632 | defsubr (&Scall_process); | |
83fa009c | 1633 | defsubr (&Sgetenv_internal); |
986ffb24 | 1634 | #endif |
e576cab4 | 1635 | defsubr (&Scall_process_region); |
80856e74 | 1636 | } |