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 | |
80856e74 JB |
106 | #define max(a, b) ((a) > (b) ? (a) : (b)) |
107 | ||
35a2f4b8 | 108 | Lisp_Object Vexec_path, Vexec_directory, Vdata_directory, Vdoc_directory; |
ed61592a | 109 | Lisp_Object Vconfigure_info_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 | ||
127 | /* If synch_process_death is zero, | |
128 | this is exit code of synchronous subprocess. */ | |
129 | int synch_process_retcode; | |
8de15d69 RS |
130 | |
131 | extern Lisp_Object Vdoc_file_name; | |
89e1ec1d | 132 | |
8d024345 | 133 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
80856e74 | 134 | \f |
37d54121 RS |
135 | /* Clean up when exiting Fcall_process. |
136 | On MSDOS, delete the temporary file on any kind of termination. | |
137 | On Unix, kill the process and any children on termination by signal. */ | |
138 | ||
139 | /* Nonzero if this is termination due to exit. */ | |
140 | static int call_process_exited; | |
141 | ||
80856e74 JB |
142 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
143 | ||
d177f194 JB |
144 | static Lisp_Object |
145 | call_process_kill (fdpid) | |
146 | Lisp_Object fdpid; | |
147 | { | |
68c45bf0 | 148 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
149 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
150 | synch_process_alive = 0; | |
151 | return Qnil; | |
152 | } | |
153 | ||
80856e74 JB |
154 | Lisp_Object |
155 | call_process_cleanup (fdpid) | |
156 | Lisp_Object fdpid; | |
157 | { | |
052062e0 | 158 | #if defined (MSDOS) || defined (macintosh) |
7e6c2178 | 159 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
160 | register Lisp_Object file; |
161 | file = Fcdr (fdpid); | |
68c45bf0 | 162 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 RS |
163 | if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) |
164 | unlink (XSTRING (file)->data); | |
052062e0 | 165 | #else /* not MSDOS and not macintosh */ |
d177f194 JB |
166 | register int pid = XFASTINT (Fcdr (fdpid)); |
167 | ||
37d54121 | 168 | if (call_process_exited) |
6b6e798b | 169 | { |
68c45bf0 | 170 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
171 | return Qnil; |
172 | } | |
37d54121 | 173 | |
d177f194 JB |
174 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
175 | { | |
176 | int count = specpdl_ptr - specpdl; | |
177 | record_unwind_protect (call_process_kill, fdpid); | |
178 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
179 | immediate_quit = 1; | |
180 | QUIT; | |
181 | wait_for_termination (pid); | |
182 | immediate_quit = 0; | |
183 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
184 | message1 ("Waiting for process to die...done"); | |
185 | } | |
80856e74 | 186 | synch_process_alive = 0; |
68c45bf0 | 187 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 188 | #endif /* not MSDOS */ |
80856e74 JB |
189 | return Qnil; |
190 | } | |
191 | ||
192 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
193 | "Call PROGRAM synchronously in separate process.\n\ | |
edf496dd | 194 | The remaining arguments are optional.\n\ |
80856e74 JB |
195 | The program's input comes from file INFILE (nil means `/dev/null').\n\ |
196 | Insert output in BUFFER before point; t means current buffer;\n\ | |
197 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
198 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
199 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
200 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
201 | STDERR-FILE may be nil (discard standard error output),\n\ | |
202 | t (mix it with ordinary output), or a file name string.\n\ | |
203 | \n\ | |
80856e74 JB |
204 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
205 | Remaining arguments are strings passed as command arguments to PROGRAM.\n\ | |
39eaa782 RS |
206 | \n\ |
207 | If BUFFER is 0, `call-process' returns immediately with value nil.\n\ | |
208 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 209 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 210 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
211 | (nargs, args) |
212 | int nargs; | |
213 | register Lisp_Object *args; | |
214 | { | |
58616e67 | 215 | Lisp_Object infile, buffer, current_dir, display, path; |
80856e74 JB |
216 | int fd[2]; |
217 | int filefd; | |
218 | register int pid; | |
6e3bfbb2 RS |
219 | char buf[16384]; |
220 | char *bufptr = buf; | |
221 | int bufsize = 16384; | |
80856e74 | 222 | int count = specpdl_ptr - specpdl; |
2d607244 | 223 | |
80856e74 JB |
224 | register unsigned char **new_argv |
225 | = (unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
226 | struct buffer *old = current_buffer; | |
39eaa782 RS |
227 | /* File to use for stderr in the child. |
228 | t means use same as standard output. */ | |
229 | Lisp_Object error_file; | |
7e6c2178 RS |
230 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
231 | char *outf, *tempfile; | |
232 | int outfilefd; | |
233 | #endif | |
052062e0 RS |
234 | #ifdef macintosh |
235 | char *tempfile; | |
236 | int outfilefd; | |
237 | #endif | |
80856e74 JB |
238 | #if 0 |
239 | int mask; | |
240 | #endif | |
32d08644 KH |
241 | struct coding_system process_coding; /* coding-system of process output */ |
242 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
243 | /* Set to the return value of Ffind_operation_coding_system. */ |
244 | Lisp_Object coding_systems; | |
245 | ||
246 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
247 | coding_systems = Qt; | |
32d08644 | 248 | |
80856e74 JB |
249 | CHECK_STRING (args[0], 0); |
250 | ||
39eaa782 RS |
251 | error_file = Qt; |
252 | ||
7e6c2178 RS |
253 | #ifndef subprocesses |
254 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
3ffde7d6 | 255 | if (nargs >= 3 |
09ffb8b5 | 256 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
257 | error ("Operating system cannot handle asynchronous subprocesses"); |
258 | #endif /* subprocesses */ | |
259 | ||
09494912 | 260 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
261 | { |
262 | Lisp_Object val, *args2; | |
32d08644 KH |
263 | int i; |
264 | ||
265 | /* If arguments are supplied, we may have to encode them. */ | |
266 | if (nargs >= 5) | |
267 | { | |
30d57b8e RS |
268 | int must_encode = 0; |
269 | ||
e7c1c20e RS |
270 | for (i = 4; i < nargs; i++) |
271 | CHECK_STRING (args[i], i); | |
272 | ||
a2286b5c | 273 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
274 | if (STRING_MULTIBYTE (args[i])) |
275 | must_encode = 1; | |
276 | ||
beacaab3 KH |
277 | if (!NILP (Vcoding_system_for_write)) |
278 | val = Vcoding_system_for_write; | |
30d57b8e | 279 | else if (! must_encode) |
beacaab3 KH |
280 | val = Qnil; |
281 | else | |
32d08644 KH |
282 | { |
283 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
284 | args2[0] = Qcall_process; | |
285 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 286 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 287 | if (CONSP (coding_systems)) |
70949dac | 288 | val = XCDR (coding_systems); |
776b95cb | 289 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 290 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
291 | else |
292 | val = Qnil; | |
32d08644 KH |
293 | } |
294 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); | |
295 | } | |
32d08644 KH |
296 | } |
297 | ||
e576cab4 JB |
298 | if (nargs >= 2 && ! NILP (args[1])) |
299 | { | |
300 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
301 | CHECK_STRING (infile, 1); | |
302 | } | |
80856e74 | 303 | else |
5437e9f9 | 304 | infile = build_string (NULL_DEVICE); |
80856e74 | 305 | |
e576cab4 JB |
306 | if (nargs >= 3) |
307 | { | |
39eaa782 RS |
308 | buffer = args[2]; |
309 | ||
310 | /* If BUFFER is a list, its meaning is | |
311 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
312 | if (CONSP (buffer)) | |
313 | { | |
70949dac | 314 | if (CONSP (XCDR (buffer))) |
45be8a1e | 315 | { |
a9d4f28a | 316 | Lisp_Object stderr_file; |
70949dac | 317 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
318 | |
319 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
320 | error_file = stderr_file; | |
321 | else | |
322 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
323 | } | |
324 | ||
70949dac | 325 | buffer = XCAR (buffer); |
39eaa782 | 326 | } |
044512ed | 327 | |
39eaa782 RS |
328 | if (!(EQ (buffer, Qnil) |
329 | || EQ (buffer, Qt) | |
3ffde7d6 | 330 | || INTEGERP (buffer))) |
e576cab4 | 331 | { |
39eaa782 RS |
332 | Lisp_Object spec_buffer; |
333 | spec_buffer = buffer; | |
50fe359b | 334 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
335 | /* Mention the buffer name for a better error message. */ |
336 | if (NILP (buffer)) | |
337 | CHECK_BUFFER (spec_buffer, 2); | |
e576cab4 JB |
338 | CHECK_BUFFER (buffer, 2); |
339 | } | |
340 | } | |
341 | else | |
342 | buffer = Qnil; | |
80856e74 | 343 | |
58616e67 JB |
344 | /* Make sure that the child will be able to chdir to the current |
345 | buffer's current directory, or its unhandled equivalent. We | |
346 | can't just have the child check for an error when it does the | |
347 | chdir, since it's in a vfork. | |
348 | ||
349 | We have to GCPRO around this because Fexpand_file_name, | |
350 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
351 | might call a file name handling function. The argument list is | |
352 | protected by the caller, so all we really have to worry about is | |
353 | buffer. */ | |
354 | { | |
355 | struct gcpro gcpro1, gcpro2, gcpro3; | |
356 | ||
357 | current_dir = current_buffer->directory; | |
358 | ||
359 | GCPRO3 (infile, buffer, current_dir); | |
360 | ||
c52b0b34 KH |
361 | current_dir |
362 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
363 | Qnil); | |
58616e67 JB |
364 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
365 | report_file_error ("Setting current directory", | |
366 | Fcons (current_buffer->directory, Qnil)); | |
367 | ||
368 | UNGCPRO; | |
369 | } | |
370 | ||
e576cab4 | 371 | display = nargs >= 4 ? args[3] : Qnil; |
80856e74 | 372 | |
68c45bf0 | 373 | filefd = emacs_open (XSTRING (infile)->data, O_RDONLY, 0); |
80856e74 JB |
374 | if (filefd < 0) |
375 | { | |
e576cab4 | 376 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
377 | } |
378 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
379 | { |
380 | struct gcpro gcpro1; | |
381 | ||
382 | GCPRO1 (current_dir); | |
383 | openp (Vexec_path, args[0], EXEC_SUFFIXES, &path, 1); | |
384 | UNGCPRO; | |
385 | } | |
012c6fcb | 386 | if (NILP (path)) |
80856e74 | 387 | { |
68c45bf0 | 388 | emacs_close (filefd); |
80856e74 JB |
389 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
390 | } | |
391 | new_argv[0] = XSTRING (path)->data; | |
c364e618 KH |
392 | if (nargs > 4) |
393 | { | |
394 | register int i; | |
c5bfa12b | 395 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 396 | |
c5bfa12b KH |
397 | GCPRO3 (infile, buffer, current_dir); |
398 | argument_coding.dst_multibyte = 0; | |
399 | for (i = 4; i < nargs; i++) | |
c364e618 | 400 | { |
c5bfa12b KH |
401 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
402 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
c364e618 | 403 | { |
c5bfa12b KH |
404 | /* We must encode this argument. */ |
405 | args[i] = encode_coding_string (args[i], &argument_coding, 1); | |
406 | if (argument_coding.type == coding_type_ccl) | |
407 | setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil); | |
c364e618 | 408 | } |
c5bfa12b | 409 | new_argv[i - 3] = XSTRING (args[i])->data; |
c364e618 | 410 | } |
c5bfa12b | 411 | UNGCPRO; |
db54baaa | 412 | new_argv[nargs - 3] = 0; |
c364e618 | 413 | } |
db54baaa KH |
414 | else |
415 | new_argv[1] = 0; | |
80856e74 | 416 | |
7e6c2178 | 417 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 418 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
419 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
420 | else | |
421 | { | |
422 | tempfile = alloca (20); | |
423 | *tempfile = '\0'; | |
424 | } | |
425 | dostounix_filename (tempfile); | |
426 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') | |
427 | strcat (tempfile, "/"); | |
428 | strcat (tempfile, "detmp.XXX"); | |
429 | mktemp (tempfile); | |
430 | ||
431 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
432 | if (outfilefd < 0) | |
433 | { | |
68c45bf0 | 434 | emacs_close (filefd); |
6f89d28a MB |
435 | report_file_error ("Opening process output file", |
436 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 437 | } |
6f89d28a | 438 | fd[0] = filefd; |
2610078a | 439 | fd[1] = outfilefd; |
6f89d28a | 440 | #endif /* MSDOS */ |
7e6c2178 | 441 | |
052062e0 RS |
442 | #ifdef macintosh |
443 | /* Since we don't have pipes on the Mac, create a temporary file to | |
444 | hold the output of the subprocess. */ | |
445 | tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
446 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, | |
447 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); | |
448 | ||
449 | mktemp (tempfile); | |
450 | ||
451 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
452 | if (outfilefd < 0) | |
453 | { | |
454 | close (filefd); | |
455 | report_file_error ("Opening process output file", | |
456 | Fcons (build_string (tempfile), Qnil)); | |
457 | } | |
458 | fd[0] = filefd; | |
459 | fd[1] = outfilefd; | |
460 | #endif /* macintosh */ | |
461 | ||
d50d3dc8 | 462 | if (INTEGERP (buffer)) |
68c45bf0 | 463 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
464 | else |
465 | { | |
7e6c2178 | 466 | #ifndef MSDOS |
052062e0 | 467 | #ifndef macintosh |
80856e74 | 468 | pipe (fd); |
7e6c2178 | 469 | #endif |
052062e0 | 470 | #endif |
80856e74 JB |
471 | #if 0 |
472 | /* Replaced by close_process_descs */ | |
473 | set_exclusive_use (fd[0]); | |
474 | #endif | |
475 | } | |
476 | ||
477 | { | |
478 | /* child_setup must clobber environ in systems with true vfork. | |
479 | Protect it from permanent change. */ | |
480 | register char **save_environ = environ; | |
481 | register int fd1 = fd[1]; | |
39eaa782 | 482 | int fd_error = fd1; |
80856e74 JB |
483 | |
484 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 485 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
486 | #endif |
487 | ||
488 | /* Record that we're about to create a synchronous process. */ | |
489 | synch_process_alive = 1; | |
490 | ||
5c03767e RS |
491 | /* These vars record information from process termination. |
492 | Clear them now before process can possibly terminate, | |
493 | to avoid timing error if process terminates soon. */ | |
494 | synch_process_death = 0; | |
495 | synch_process_retcode = 0; | |
496 | ||
39eaa782 | 497 | if (NILP (error_file)) |
68c45bf0 | 498 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
499 | else if (STRINGP (error_file)) |
500 | { | |
501 | #ifdef DOS_NT | |
68c45bf0 PE |
502 | fd_error = emacs_open (XSTRING (error_file)->data, |
503 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
504 | S_IREAD | S_IWRITE); | |
39eaa782 RS |
505 | #else /* not DOS_NT */ |
506 | fd_error = creat (XSTRING (error_file)->data, 0666); | |
507 | #endif /* not DOS_NT */ | |
508 | } | |
509 | ||
510 | if (fd_error < 0) | |
511 | { | |
68c45bf0 | 512 | emacs_close (filefd); |
6f89d28a | 513 | if (fd[0] != filefd) |
68c45bf0 | 514 | emacs_close (fd[0]); |
39eaa782 | 515 | if (fd1 >= 0) |
68c45bf0 | 516 | emacs_close (fd1); |
6f89d28a MB |
517 | #ifdef MSDOS |
518 | unlink (tempfile); | |
519 | #endif | |
520 | report_file_error ("Cannot redirect stderr", | |
521 | Fcons ((NILP (error_file) | |
522 | ? build_string (NULL_DEVICE) : error_file), | |
523 | Qnil)); | |
39eaa782 | 524 | } |
89e1ec1d | 525 | |
8d024345 | 526 | current_dir = ENCODE_FILE (current_dir); |
89e1ec1d | 527 | |
052062e0 RS |
528 | #ifdef macintosh |
529 | { | |
530 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
531 | a child_setup as for MSDOS and other platforms. Note that this | |
532 | code does not handle passing the environment to the synchronous | |
533 | Mac subprocess. */ | |
534 | char *infn, *outfn, *errfn, *currdn; | |
535 | ||
536 | /* close these files so subprocess can write to them */ | |
537 | close (outfilefd); | |
538 | if (fd_error != outfilefd) | |
539 | close (fd_error); | |
540 | fd1 = -1; /* No harm in closing that one! */ | |
541 | ||
542 | infn = XSTRING (infile)->data; | |
543 | outfn = tempfile; | |
544 | if (NILP (error_file)) | |
545 | errfn = NULL_DEVICE; | |
546 | else if (EQ (Qt, error_file)) | |
547 | errfn = outfn; | |
548 | else | |
549 | errfn = XSTRING (error_file)->data; | |
550 | currdn = XSTRING (current_dir)->data; | |
551 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); | |
552 | ||
553 | /* Record that the synchronous process exited and note its | |
554 | termination status. */ | |
555 | synch_process_alive = 0; | |
556 | synch_process_retcode = pid; | |
557 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 558 | { |
ca9c0567 | 559 | synchronize_system_messages_locale (); |
68c45bf0 PE |
560 | synch_process_death = strerror (errno); |
561 | } | |
052062e0 RS |
562 | |
563 | /* Since CRLF is converted to LF within `decode_coding', we can | |
564 | always open a file with binary mode. */ | |
565 | fd[0] = open (tempfile, O_BINARY); | |
566 | if (fd[0] < 0) | |
567 | { | |
568 | unlink (tempfile); | |
569 | close (filefd); | |
570 | report_file_error ("Cannot re-open temporary file", Qnil); | |
571 | } | |
572 | } | |
573 | #else /* not macintosh */ | |
2610078a | 574 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 575 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
576 | exit status, not its PID, so we assign it to `synch_process_retcode' |
577 | below. */ | |
c17c4250 EZ |
578 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
579 | 0, current_dir); | |
39eaa782 | 580 | |
2610078a KH |
581 | /* Record that the synchronous process exited and note its |
582 | termination status. */ | |
583 | synch_process_alive = 0; | |
584 | synch_process_retcode = pid; | |
585 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 586 | { |
ca9c0567 | 587 | synchronize_system_messages_locale (); |
68c45bf0 PE |
588 | synch_process_death = strerror (errno); |
589 | } | |
2610078a | 590 | |
68c45bf0 | 591 | emacs_close (outfilefd); |
2610078a | 592 | if (fd_error != outfilefd) |
68c45bf0 | 593 | emacs_close (fd_error); |
2610078a | 594 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
595 | /* Since CRLF is converted to LF within `decode_coding', we can |
596 | always open a file with binary mode. */ | |
68c45bf0 | 597 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
598 | if (fd[0] < 0) |
599 | { | |
600 | unlink (tempfile); | |
68c45bf0 | 601 | emacs_close (filefd); |
2610078a KH |
602 | report_file_error ("Cannot re-open temporary file", Qnil); |
603 | } | |
604 | #else /* not MSDOS */ | |
bad95d8f | 605 | #ifdef WINDOWSNT |
2d607244 RS |
606 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
607 | 0, current_dir); | |
bad95d8f | 608 | #else /* not WINDOWSNT */ |
80856e74 JB |
609 | pid = vfork (); |
610 | ||
611 | if (pid == 0) | |
612 | { | |
613 | if (fd[0] >= 0) | |
68c45bf0 | 614 | emacs_close (fd[0]); |
1e7963c7 RS |
615 | #ifdef HAVE_SETSID |
616 | setsid (); | |
617 | #endif | |
618 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
619 | setpgrp (); |
620 | #else | |
621 | setpgrp (pid, pid); | |
622 | #endif /* USG */ | |
2d607244 RS |
623 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
624 | 0, current_dir); | |
80856e74 | 625 | } |
bad95d8f | 626 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
627 | |
628 | /* The MSDOS case did this already. */ | |
629 | if (fd_error >= 0) | |
68c45bf0 | 630 | emacs_close (fd_error); |
2610078a | 631 | #endif /* not MSDOS */ |
052062e0 | 632 | #endif /* not macintosh */ |
80856e74 | 633 | |
80856e74 JB |
634 | environ = save_environ; |
635 | ||
6b6e798b RS |
636 | /* Close most of our fd's, but not fd[0] |
637 | since we will use that to read input from. */ | |
68c45bf0 | 638 | emacs_close (filefd); |
799abb26 | 639 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 640 | emacs_close (fd1); |
80856e74 JB |
641 | } |
642 | ||
643 | if (pid < 0) | |
644 | { | |
6b6e798b | 645 | if (fd[0] >= 0) |
68c45bf0 | 646 | emacs_close (fd[0]); |
80856e74 JB |
647 | report_file_error ("Doing vfork", Qnil); |
648 | } | |
649 | ||
d50d3dc8 | 650 | if (INTEGERP (buffer)) |
80856e74 | 651 | { |
6b6e798b | 652 | if (fd[0] >= 0) |
68c45bf0 | 653 | emacs_close (fd[0]); |
80856e74 | 654 | #ifndef subprocesses |
e576cab4 JB |
655 | /* If Emacs has been built with asynchronous subprocess support, |
656 | we don't need to do this, I think because it will then have | |
657 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
658 | wait_without_blocking (); |
659 | #endif /* subprocesses */ | |
80856e74 JB |
660 | return Qnil; |
661 | } | |
662 | ||
6b6e798b | 663 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
664 | call_process_exited = 0; |
665 | ||
052062e0 | 666 | #if defined(MSDOS) || defined(macintosh) |
7e6c2178 RS |
667 | /* MSDOS needs different cleanup information. */ |
668 | record_unwind_protect (call_process_cleanup, | |
669 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
670 | #else | |
80856e74 JB |
671 | record_unwind_protect (call_process_cleanup, |
672 | Fcons (make_number (fd[0]), make_number (pid))); | |
052062e0 | 673 | #endif /* not MSDOS and not macintosh */ |
80856e74 JB |
674 | |
675 | ||
d50d3dc8 | 676 | if (BUFFERP (buffer)) |
80856e74 JB |
677 | Fset_buffer (buffer); |
678 | ||
09494912 RS |
679 | if (NILP (buffer)) |
680 | { | |
681 | /* If BUFFER is nil, we must read process output once and then | |
682 | discard it, so setup coding system but with nil. */ | |
683 | setup_coding_system (Qnil, &process_coding); | |
684 | } | |
685 | else | |
686 | { | |
687 | Lisp_Object val, *args2; | |
688 | ||
689 | val = Qnil; | |
690 | if (!NILP (Vcoding_system_for_read)) | |
691 | val = Vcoding_system_for_read; | |
692 | else | |
693 | { | |
694 | if (EQ (coding_systems, Qt)) | |
695 | { | |
696 | int i; | |
697 | ||
698 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
699 | args2[0] = Qcall_process; | |
700 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
701 | coding_systems | |
702 | = Ffind_operation_coding_system (nargs + 1, args2); | |
703 | } | |
704 | if (CONSP (coding_systems)) | |
70949dac | 705 | val = XCAR (coding_systems); |
09494912 | 706 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 707 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
708 | else |
709 | val = Qnil; | |
710 | } | |
711 | setup_coding_system (Fcheck_coding_system (val), &process_coding); | |
712 | /* In unibyte mode, character code conversion should not take | |
713 | place but EOL conversion should. So, setup raw-text or one | |
714 | of the subsidiary according to the information just setup. */ | |
715 | if (NILP (current_buffer->enable_multibyte_characters) | |
716 | && !NILP (val)) | |
717 | setup_raw_text_coding_system (&process_coding); | |
718 | } | |
c5bfa12b KH |
719 | process_coding.src_multibyte = 0; |
720 | process_coding.dst_multibyte | |
721 | = (BUFFERP (buffer) | |
722 | ? ! NILP (XBUFFER (buffer)->enable_multibyte_characters) | |
723 | : ! NILP (current_buffer->enable_multibyte_characters)); | |
09494912 | 724 | |
80856e74 JB |
725 | immediate_quit = 1; |
726 | QUIT; | |
727 | ||
728 | { | |
729 | register int nread; | |
0ad477db | 730 | int first = 1; |
6e3bfbb2 | 731 | int total_read = 0; |
321fecde | 732 | int carryover = 0; |
7a7ab107 | 733 | int display_on_the_fly = !NILP (display) && INTERACTIVE; |
05b44e90 | 734 | struct coding_system saved_coding; |
f778b157 KH |
735 | int pt_orig = PT, pt_byte_orig = PT_BYTE; |
736 | int inserted; | |
05b44e90 KH |
737 | |
738 | saved_coding = process_coding; | |
f0b950cf KH |
739 | if (process_coding.composing != COMPOSITION_DISABLED) |
740 | coding_allocate_composition_data (&process_coding, PT); | |
60558b19 | 741 | while (1) |
80856e74 | 742 | { |
60558b19 RS |
743 | /* Repeatedly read until we've filled as much as possible |
744 | of the buffer size we have. But don't read | |
8e6208c5 | 745 | less than 1024--save that for the next bufferful. */ |
321fecde | 746 | nread = carryover; |
60558b19 | 747 | while (nread < bufsize - 1024) |
00fb3e95 | 748 | { |
68c45bf0 PE |
749 | int this_read = emacs_read (fd[0], bufptr + nread, |
750 | bufsize - nread); | |
60558b19 RS |
751 | |
752 | if (this_read < 0) | |
753 | goto give_up; | |
754 | ||
755 | if (this_read == 0) | |
7a7ab107 KH |
756 | { |
757 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
758 | break; | |
759 | } | |
60558b19 RS |
760 | |
761 | nread += this_read; | |
7a7ab107 | 762 | total_read += this_read; |
60558b19 | 763 | |
7a7ab107 KH |
764 | if (display_on_the_fly) |
765 | break; | |
766 | } | |
60558b19 RS |
767 | |
768 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 769 | immediate_quit = 0; |
6e3bfbb2 | 770 | |
012c6fcb | 771 | if (!NILP (buffer)) |
32d08644 | 772 | { |
c5bfa12b KH |
773 | if (! CODING_MAY_REQUIRE_DECODING (&process_coding)) |
774 | insert_1_both (bufptr, nread, nread, 0, 1, 0); | |
32d08644 KH |
775 | else |
776 | { /* We have to decode the input. */ | |
f0b950cf KH |
777 | int size; |
778 | char *decoding_buf; | |
32d08644 | 779 | |
f0b950cf KH |
780 | repeat_decoding: |
781 | size = decoding_buffer_size (&process_coding, nread); | |
782 | decoding_buf = (char *) xmalloc (size); | |
7bdba03c | 783 | |
2d892150 KH |
784 | if (process_coding.cmp_data) |
785 | process_coding.cmp_data->char_offset = PT; | |
7bdba03c | 786 | |
321fecde KH |
787 | decode_coding (&process_coding, bufptr, decoding_buf, |
788 | nread, size); | |
7bdba03c | 789 | |
7a7ab107 KH |
790 | if (display_on_the_fly |
791 | && saved_coding.type == coding_type_undecided | |
792 | && process_coding.type != coding_type_undecided) | |
793 | { | |
794 | /* We have detected some coding system. But, | |
795 | there's a possibility that the detection was | |
796 | done by insufficient data. So, we give up | |
797 | displaying on the fly. */ | |
a871dd58 | 798 | xfree (decoding_buf); |
7a7ab107 KH |
799 | display_on_the_fly = 0; |
800 | process_coding = saved_coding; | |
801 | carryover = nread; | |
802 | continue; | |
803 | } | |
7bdba03c | 804 | |
321fecde | 805 | if (process_coding.produced > 0) |
2d892150 KH |
806 | insert_1_both (decoding_buf, process_coding.produced_char, |
807 | process_coding.produced, 0, 1, 0); | |
a871dd58 | 808 | xfree (decoding_buf); |
7bdba03c GM |
809 | |
810 | if (process_coding.result == CODING_FINISH_INCONSISTENT_EOL) | |
811 | { | |
812 | Lisp_Object eol_type, coding; | |
813 | ||
814 | if (process_coding.eol_type == CODING_EOL_CR) | |
815 | { | |
816 | /* CRs have been replaced with LFs. Undo | |
817 | that in the text inserted above. */ | |
818 | unsigned char *p; | |
819 | ||
820 | move_gap_both (PT, PT_BYTE); | |
821 | ||
822 | p = BYTE_POS_ADDR (pt_byte_orig); | |
823 | for (; p < GPT_ADDR; ++p) | |
824 | if (*p == '\n') | |
825 | *p = '\r'; | |
826 | } | |
827 | else if (process_coding.eol_type == CODING_EOL_CRLF) | |
828 | { | |
829 | /* CR LFs have been replaced with LFs. Undo | |
830 | that by inserting CRs in front of LFs in | |
831 | the text inserted above. */ | |
832 | EMACS_INT bytepos, old_pt, old_pt_byte, nCR; | |
833 | ||
834 | old_pt = PT; | |
835 | old_pt_byte = PT_BYTE; | |
836 | nCR = 0; | |
837 | ||
838 | for (bytepos = PT_BYTE - 1; | |
839 | bytepos >= pt_byte_orig; | |
840 | --bytepos) | |
841 | if (FETCH_BYTE (bytepos) == '\n') | |
842 | { | |
843 | EMACS_INT charpos = BYTE_TO_CHAR (bytepos); | |
844 | TEMP_SET_PT_BOTH (charpos, bytepos); | |
845 | insert_1_both ("\r", 1, 1, 0, 1, 0); | |
846 | ++nCR; | |
847 | } | |
848 | ||
849 | TEMP_SET_PT_BOTH (old_pt + nCR, old_pt_byte + nCR); | |
850 | } | |
851 | ||
852 | /* Set the coding system symbol to that for | |
853 | Unix-like EOL. */ | |
854 | eol_type = Fget (saved_coding.symbol, Qeol_type); | |
855 | if (VECTORP (eol_type) | |
856 | && ASIZE (eol_type) == 3 | |
857 | && SYMBOLP (AREF (eol_type, CODING_EOL_LF))) | |
858 | coding = AREF (eol_type, CODING_EOL_LF); | |
859 | else | |
860 | coding = saved_coding.symbol; | |
861 | ||
862 | process_coding.symbol = coding; | |
863 | process_coding.eol_type = CODING_EOL_LF; | |
864 | process_coding.mode | |
865 | &= ~CODING_MODE_INHIBIT_INCONSISTENT_EOL; | |
866 | } | |
867 | ||
f0b950cf KH |
868 | nread -= process_coding.consumed; |
869 | carryover = nread; | |
321fecde | 870 | if (carryover > 0) |
c5bfa12b KH |
871 | /* As CARRYOVER should not be that large, we had |
872 | better avoid overhead of bcopy. */ | |
873 | BCOPY_SHORT (bufptr + process_coding.consumed, bufptr, | |
874 | carryover); | |
f0b950cf KH |
875 | if (process_coding.result == CODING_FINISH_INSUFFICIENT_CMP) |
876 | { | |
877 | /* The decoding ended because of insufficient data | |
878 | area to record information about composition. | |
879 | We must try decoding with additional data area | |
2d892150 | 880 | before reading more output for the process. */ |
f0b950cf KH |
881 | coding_allocate_composition_data (&process_coding, PT); |
882 | goto repeat_decoding; | |
883 | } | |
32d08644 KH |
884 | } |
885 | } | |
c5bfa12b | 886 | |
321fecde | 887 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 888 | break; |
6e3bfbb2 RS |
889 | |
890 | /* Make the buffer bigger as we continue to read more data, | |
891 | but not past 64k. */ | |
892 | if (bufsize < 64 * 1024 && total_read > 32 * bufsize) | |
893 | { | |
894 | bufsize *= 2; | |
895 | bufptr = (char *) alloca (bufsize); | |
896 | } | |
897 | ||
012c6fcb | 898 | if (!NILP (display) && INTERACTIVE) |
0ad477db RS |
899 | { |
900 | if (first) | |
901 | prepare_menu_bars (); | |
902 | first = 0; | |
3007ebfb | 903 | redisplay_preserve_echo_area (1); |
0ad477db | 904 | } |
80856e74 JB |
905 | immediate_quit = 1; |
906 | QUIT; | |
907 | } | |
60558b19 | 908 | give_up: ; |
80856e74 | 909 | |
2d892150 KH |
910 | if (!NILP (buffer) |
911 | && process_coding.cmp_data) | |
912 | { | |
913 | coding_restore_composition (&process_coding, Fcurrent_buffer ()); | |
914 | coding_free_composition_data (&process_coding); | |
915 | } | |
f0b950cf | 916 | |
838c9726 KH |
917 | { |
918 | int post_read_count = specpdl_ptr - specpdl; | |
919 | ||
920 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
921 | inserted = PT - pt_orig; | |
922 | TEMP_SET_PT_BOTH (pt_orig, pt_byte_orig); | |
923 | if (SYMBOLP (process_coding.post_read_conversion) | |
924 | && !NILP (Ffboundp (process_coding.post_read_conversion))) | |
925 | call1 (process_coding.post_read_conversion, make_number (inserted)); | |
f778b157 | 926 | |
838c9726 | 927 | Vlast_coding_system_used = process_coding.symbol; |
bbd29cfe | 928 | |
838c9726 KH |
929 | /* If the caller required, let the buffer inherit the |
930 | coding-system used to decode the process output. */ | |
931 | if (inherit_process_coding_system) | |
932 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
933 | make_number (total_read)); | |
934 | ||
935 | unbind_to (post_read_count, Qnil); | |
936 | } | |
3b440bb5 EZ |
937 | } |
938 | ||
80856e74 JB |
939 | /* Wait for it to terminate, unless it already has. */ |
940 | wait_for_termination (pid); | |
941 | ||
942 | immediate_quit = 0; | |
943 | ||
944 | set_buffer_internal (old); | |
945 | ||
37d54121 RS |
946 | /* Don't kill any children that the subprocess may have left behind |
947 | when exiting. */ | |
948 | call_process_exited = 1; | |
949 | ||
80856e74 JB |
950 | unbind_to (count, Qnil); |
951 | ||
80856e74 | 952 | if (synch_process_death) |
68c45bf0 PE |
953 | return code_convert_string_norecord (build_string (synch_process_death), |
954 | Vlocale_coding_system, 0); | |
80856e74 JB |
955 | return make_number (synch_process_retcode); |
956 | } | |
957 | #endif | |
958 | \f | |
9fefd2ba | 959 | static Lisp_Object |
80856e74 JB |
960 | delete_temp_file (name) |
961 | Lisp_Object name; | |
962 | { | |
2e3dc201 | 963 | /* Use Fdelete_file (indirectly) because that runs a file name handler. |
59750d69 | 964 | We did that when writing the file, so we should do so when deleting. */ |
2e3dc201 | 965 | internal_delete_file (name); |
320695d8 | 966 | return Qnil; |
80856e74 JB |
967 | } |
968 | ||
969 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
970 | 3, MANY, 0, | |
971 | "Send text from START to END to a synchronous process running PROGRAM.\n\ | |
edf496dd | 972 | The remaining arguments are optional.\n\ |
80856e74 | 973 | Delete the text if fourth arg DELETE is non-nil.\n\ |
39eaa782 | 974 | \n\ |
80856e74 JB |
975 | Insert output in BUFFER before point; t means current buffer;\n\ |
976 | nil for BUFFER means discard it; 0 means discard and don't wait.\n\ | |
39eaa782 RS |
977 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ |
978 | REAL-BUFFER says what to do with standard output, as above,\n\ | |
979 | while STDERR-FILE says what to do with standard error in the child.\n\ | |
980 | STDERR-FILE may be nil (discard standard error output),\n\ | |
981 | t (mix it with ordinary output), or a file name string.\n\ | |
982 | \n\ | |
80856e74 JB |
983 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ |
984 | Remaining args are passed to PROGRAM at startup as command args.\n\ | |
39eaa782 RS |
985 | \n\ |
986 | If BUFFER is nil, `call-process-region' returns immediately with value nil.\n\ | |
987 | Otherwise it waits for PROGRAM to terminate\n\ | |
e576cab4 | 988 | and returns a numeric exit status or a signal description string.\n\ |
d177f194 | 989 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") |
80856e74 JB |
990 | (nargs, args) |
991 | int nargs; | |
992 | register Lisp_Object *args; | |
993 | { | |
39323a7e KH |
994 | struct gcpro gcpro1; |
995 | Lisp_Object filename_string; | |
996 | register Lisp_Object start, end; | |
d3e81d0a | 997 | int count = specpdl_ptr - specpdl; |
08ee4e87 | 998 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 999 | Lisp_Object coding_systems; |
32d08644 KH |
1000 | Lisp_Object val, *args2; |
1001 | int i; | |
bad95d8f | 1002 | #ifdef DOS_NT |
7e6c2178 | 1003 | char *tempfile; |
7e6c2178 RS |
1004 | char *outf = '\0'; |
1005 | ||
8a52365c EZ |
1006 | if ((outf = egetenv ("TMPDIR")) |
1007 | || (outf = egetenv ("TMP")) | |
1008 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
1009 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
1010 | else | |
1011 | { | |
1012 | tempfile = alloca (20); | |
1013 | *tempfile = '\0'; | |
1014 | } | |
0774fcf8 | 1015 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 1016 | strcat (tempfile, "/"); |
5711b547 RS |
1017 | if ('/' == DIRECTORY_SEP) |
1018 | dostounix_filename (tempfile); | |
1019 | else | |
1020 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
1021 | #ifdef WINDOWSNT |
1022 | strcat (tempfile, "emXXXXXX"); | |
1023 | #else | |
7e6c2178 | 1024 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 1025 | #endif |
bad95d8f | 1026 | #else /* not DOS_NT */ |
fc932ac6 | 1027 | char *tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
8abd035b | 1028 | bcopy (XSTRING (Vtemp_file_name_pattern)->data, tempfile, |
fc932ac6 | 1029 | STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); |
bad95d8f | 1030 | #endif /* not DOS_NT */ |
7e6c2178 | 1031 | |
09494912 RS |
1032 | coding_systems = Qt; |
1033 | ||
1ddc85a4 DL |
1034 | #ifdef HAVE_MKSTEMP |
1035 | { | |
1036 | int fd = mkstemp (tempfile); | |
1037 | if (fd == -1) | |
1038 | report_file_error ("Failed to open temporary file", | |
1039 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
1040 | else | |
1041 | close (fd); | |
1042 | } | |
1043 | #else | |
80856e74 | 1044 | mktemp (tempfile); |
1ddc85a4 | 1045 | #endif |
80856e74 JB |
1046 | |
1047 | filename_string = build_string (tempfile); | |
39323a7e | 1048 | GCPRO1 (filename_string); |
80856e74 JB |
1049 | start = args[0]; |
1050 | end = args[1]; | |
32d08644 | 1051 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
1052 | if (!NILP (Vcoding_system_for_write)) |
1053 | val = Vcoding_system_for_write; | |
1054 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
1055 | val = Qnil; |
1056 | else | |
beacaab3 | 1057 | { |
91489411 RS |
1058 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
1059 | args2[0] = Qcall_process_region; | |
1060 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
1061 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
1062 | if (CONSP (coding_systems)) | |
70949dac | 1063 | val = XCDR (coding_systems); |
91489411 | 1064 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1065 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 1066 | else |
91489411 | 1067 | val = Qnil; |
beacaab3 | 1068 | } |
32d08644 | 1069 | |
168afdaa RS |
1070 | { |
1071 | int count1 = specpdl_ptr - specpdl; | |
1072 | ||
1073 | specbind (intern ("coding-system-for-write"), val); | |
1074 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); | |
1075 | ||
1076 | unbind_to (count1, Qnil); | |
1077 | } | |
91489411 RS |
1078 | |
1079 | /* Note that Fcall_process takes care of binding | |
1080 | coding-system-for-read. */ | |
093650fe | 1081 | |
80856e74 JB |
1082 | record_unwind_protect (delete_temp_file, filename_string); |
1083 | ||
edf496dd | 1084 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
1085 | Fdelete_region (start, end); |
1086 | ||
edf496dd KH |
1087 | if (nargs > 3) |
1088 | { | |
1089 | args += 2; | |
1090 | nargs -= 2; | |
1091 | } | |
1092 | else | |
1093 | { | |
1094 | args[0] = args[2]; | |
1095 | nargs = 2; | |
1096 | } | |
1097 | args[1] = filename_string; | |
80856e74 | 1098 | |
edf496dd | 1099 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
1100 | } |
1101 | \f | |
1102 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
1103 | ||
dfcf069d AS |
1104 | static int relocate_fd (); |
1105 | ||
80856e74 JB |
1106 | /* This is the last thing run in a newly forked inferior |
1107 | either synchronous or asynchronous. | |
1108 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1109 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1110 | then exec another program based on new_argv. | |
1111 | ||
1112 | This function may change environ for the superior process. | |
1113 | Therefore, the superior process must save and restore the value | |
1114 | of environ around the vfork and the call to this function. | |
1115 | ||
80856e74 | 1116 | SET_PGRP is nonzero if we should put the subprocess into a separate |
e576cab4 JB |
1117 | process group. |
1118 | ||
1119 | CURRENT_DIR is an elisp string giving the path of the current | |
1120 | directory the subprocess should have. Since we can't really signal | |
1121 | a decent error from within the child, this should be verified as an | |
1122 | executable directory by the parent. */ | |
80856e74 | 1123 | |
dfcf069d | 1124 | int |
e576cab4 | 1125 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1126 | int in, out, err; |
1127 | register char **new_argv; | |
80856e74 | 1128 | int set_pgrp; |
e576cab4 | 1129 | Lisp_Object current_dir; |
80856e74 | 1130 | { |
e576cab4 | 1131 | char **env; |
7fcf7f05 | 1132 | char *pwd_var; |
bad95d8f RS |
1133 | #ifdef WINDOWSNT |
1134 | int cpid; | |
4252a4bd | 1135 | HANDLE handles[3]; |
bad95d8f | 1136 | #endif /* WINDOWSNT */ |
e576cab4 | 1137 | |
33abe2d9 | 1138 | int pid = getpid (); |
80856e74 | 1139 | |
68d10241 | 1140 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 JB |
1141 | { |
1142 | extern int emacs_priority; | |
1143 | ||
68d10241 RS |
1144 | if (emacs_priority < 0) |
1145 | nice (- emacs_priority); | |
4f0b9d49 | 1146 | } |
5b633aeb | 1147 | #endif |
80856e74 JB |
1148 | |
1149 | #ifdef subprocesses | |
1150 | /* Close Emacs's descriptors that this process should not have. */ | |
1151 | close_process_descs (); | |
1152 | #endif | |
c17c4250 EZ |
1153 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1154 | we will lose if we call close_load_descs here. */ | |
1155 | #ifndef DOS_NT | |
4458cebe | 1156 | close_load_descs (); |
c17c4250 | 1157 | #endif |
80856e74 JB |
1158 | |
1159 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1160 | that do not have true vfork or that have true (stack) alloca. | |
1161 | If using vfork and C_ALLOCA it is safe because that changes | |
1162 | the superior's static variables as if the superior had done alloca | |
1163 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1164 | { |
7fcf7f05 | 1165 | register char *temp; |
e576cab4 | 1166 | register int i; |
77d78be1 | 1167 | |
fc932ac6 | 1168 | i = STRING_BYTES (XSTRING (current_dir)); |
16425c4a EZ |
1169 | #ifdef MSDOS |
1170 | /* MSDOS must have all environment variables malloc'ed, because | |
1171 | low-level libc functions that launch subsidiary processes rely | |
1172 | on that. */ | |
1173 | pwd_var = (char *) xmalloc (i + 6); | |
1174 | #else | |
7fcf7f05 | 1175 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1176 | #endif |
7fcf7f05 RS |
1177 | temp = pwd_var + 4; |
1178 | bcopy ("PWD=", pwd_var, 4); | |
e576cab4 | 1179 | bcopy (XSTRING (current_dir)->data, temp, i); |
bad95d8f | 1180 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1181 | temp[i] = 0; |
1182 | ||
c17c4250 | 1183 | #ifndef DOS_NT |
e576cab4 JB |
1184 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1185 | the callers check the current directory before forking, this | |
1186 | should only return an error if the directory's permissions | |
1187 | are changed between the check and this chdir, but we should | |
1188 | at least check. */ | |
1189 | if (chdir (temp) < 0) | |
20b25e46 | 1190 | _exit (errno); |
b4c7684c | 1191 | #endif |
7fcf7f05 | 1192 | |
c17c4250 EZ |
1193 | #ifdef DOS_NT |
1194 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1195 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1196 | { | |
1197 | temp += 2; | |
1198 | i -= 2; | |
1199 | } | |
1200 | #endif | |
1201 | ||
7fcf7f05 | 1202 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1203 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1204 | temp[--i] = 0; |
e576cab4 | 1205 | } |
80856e74 | 1206 | |
80856e74 JB |
1207 | /* Set `env' to a vector of the strings in Vprocess_environment. */ |
1208 | { | |
1209 | register Lisp_Object tem; | |
1210 | register char **new_env; | |
1211 | register int new_length; | |
1212 | ||
1213 | new_length = 0; | |
1214 | for (tem = Vprocess_environment; | |
70949dac KR |
1215 | CONSP (tem) && STRINGP (XCAR (tem)); |
1216 | tem = XCDR (tem)) | |
80856e74 JB |
1217 | new_length++; |
1218 | ||
7fcf7f05 RS |
1219 | /* new_length + 2 to include PWD and terminating 0. */ |
1220 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1221 | ||
1222 | /* If we have a PWD envvar, pass one down, | |
1223 | but with corrected value. */ | |
1224 | if (getenv ("PWD")) | |
1225 | *new_env++ = pwd_var; | |
80856e74 | 1226 | |
cd9565ba | 1227 | /* Copy the Vprocess_environment strings into new_env. */ |
80856e74 | 1228 | for (tem = Vprocess_environment; |
70949dac KR |
1229 | CONSP (tem) && STRINGP (XCAR (tem)); |
1230 | tem = XCDR (tem)) | |
cd9565ba RS |
1231 | { |
1232 | char **ep = env; | |
70949dac | 1233 | char *string = (char *) XSTRING (XCAR (tem))->data; |
cd9565ba RS |
1234 | /* See if this string duplicates any string already in the env. |
1235 | If so, don't put it in. | |
1236 | When an env var has multiple definitions, | |
1237 | we keep the definition that comes first in process-environment. */ | |
1238 | for (; ep != new_env; ep++) | |
1239 | { | |
1240 | char *p = *ep, *q = string; | |
1241 | while (1) | |
1242 | { | |
1243 | if (*q == 0) | |
1244 | /* The string is malformed; might as well drop it. */ | |
1245 | goto duplicate; | |
1246 | if (*q != *p) | |
1247 | break; | |
1248 | if (*q == '=') | |
1249 | goto duplicate; | |
1250 | p++, q++; | |
1251 | } | |
1252 | } | |
1253 | *new_env++ = string; | |
1254 | duplicate: ; | |
1255 | } | |
80856e74 JB |
1256 | *new_env = 0; |
1257 | } | |
bad95d8f RS |
1258 | #ifdef WINDOWSNT |
1259 | prepare_standard_handles (in, out, err, handles); | |
b4c7684c | 1260 | set_process_dir (XSTRING (current_dir)->data); |
bad95d8f | 1261 | #else /* not WINDOWSNT */ |
426b37ae JB |
1262 | /* Make sure that in, out, and err are not actually already in |
1263 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1264 | started with its standard in, out, or error closed, as might |
426b37ae | 1265 | happen under X. */ |
f29f9e4a RS |
1266 | { |
1267 | int oin = in, oout = out; | |
1268 | ||
1269 | /* We have to avoid relocating the same descriptor twice! */ | |
1270 | ||
1271 | in = relocate_fd (in, 3); | |
1272 | ||
1273 | if (out == oin) | |
1274 | out = in; | |
1275 | else | |
3e9367e7 | 1276 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1277 | |
1278 | if (err == oin) | |
1279 | err = in; | |
1280 | else if (err == oout) | |
1281 | err = out; | |
1282 | else | |
3e9367e7 | 1283 | err = relocate_fd (err, 3); |
f29f9e4a | 1284 | } |
426b37ae | 1285 | |
c17c4250 | 1286 | #ifndef MSDOS |
68c45bf0 PE |
1287 | emacs_close (0); |
1288 | emacs_close (1); | |
1289 | emacs_close (2); | |
80856e74 JB |
1290 | |
1291 | dup2 (in, 0); | |
1292 | dup2 (out, 1); | |
1293 | dup2 (err, 2); | |
68c45bf0 PE |
1294 | emacs_close (in); |
1295 | emacs_close (out); | |
1296 | emacs_close (err); | |
c17c4250 | 1297 | #endif /* not MSDOS */ |
bad95d8f | 1298 | #endif /* not WINDOWSNT */ |
80856e74 | 1299 | |
6b2cd868 | 1300 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1301 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1302 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1303 | #endif |
e576cab4 JB |
1304 | #else |
1305 | setpgrp (pid, pid); | |
1306 | #endif /* USG */ | |
a129418f RS |
1307 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1308 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 JB |
1309 | |
1310 | #ifdef vipc | |
1311 | something missing here; | |
1312 | #endif /* vipc */ | |
1313 | ||
c17c4250 EZ |
1314 | #ifdef MSDOS |
1315 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
a3f0666f | 1316 | xfree (pwd_var); |
c17c4250 EZ |
1317 | if (pid == -1) |
1318 | /* An error occurred while trying to run the subprocess. */ | |
1319 | report_file_error ("Spawning child process", Qnil); | |
1320 | return pid; | |
1321 | #else /* not MSDOS */ | |
bad95d8f RS |
1322 | #ifdef WINDOWSNT |
1323 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1324 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1325 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1326 | if (cpid == -1) |
1327 | /* An error occurred while trying to spawn the process. */ | |
1328 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1329 | return cpid; |
1330 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1331 | /* execvp does not accept an environment arg so the only way |
1332 | to pass this environment is to set environ. Our caller | |
1333 | is responsible for restoring the ambient value of environ. */ | |
1334 | environ = env; | |
1335 | execvp (new_argv[0], new_argv); | |
1336 | ||
68c45bf0 PE |
1337 | emacs_write (1, "Can't exec program: ", 20); |
1338 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1339 | emacs_write (1, "\n", 1); | |
80856e74 | 1340 | _exit (1); |
bad95d8f | 1341 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1342 | #endif /* not MSDOS */ |
80856e74 JB |
1343 | } |
1344 | ||
a3833dfe | 1345 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1346 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1347 | static int |
a3833dfe KH |
1348 | relocate_fd (fd, minfd) |
1349 | int fd, minfd; | |
426b37ae | 1350 | { |
a3833dfe | 1351 | if (fd >= minfd) |
426b37ae JB |
1352 | return fd; |
1353 | else | |
1354 | { | |
1355 | int new = dup (fd); | |
1356 | if (new == -1) | |
1357 | { | |
20c018a0 | 1358 | char *message1 = "Error while setting up child: "; |
826c56ac | 1359 | char *errmessage = strerror (errno); |
20c018a0 | 1360 | char *message2 = "\n"; |
68c45bf0 PE |
1361 | emacs_write (2, message1, strlen (message1)); |
1362 | emacs_write (2, errmessage, strlen (errmessage)); | |
1363 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1364 | _exit (1); |
1365 | } | |
1366 | /* Note that we hold the original FD open while we recurse, | |
1367 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1368 | new = relocate_fd (new, minfd); |
68c45bf0 | 1369 | emacs_close (fd); |
426b37ae JB |
1370 | return new; |
1371 | } | |
1372 | } | |
1373 | ||
012c6fcb JA |
1374 | static int |
1375 | getenv_internal (var, varlen, value, valuelen) | |
1376 | char *var; | |
1377 | int varlen; | |
1378 | char **value; | |
1379 | int *valuelen; | |
1380 | { | |
1381 | Lisp_Object scan; | |
1382 | ||
70949dac | 1383 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) |
012c6fcb | 1384 | { |
c1350752 KH |
1385 | Lisp_Object entry; |
1386 | ||
70949dac | 1387 | entry = XCAR (scan); |
d50d3dc8 | 1388 | if (STRINGP (entry) |
fc932ac6 | 1389 | && STRING_BYTES (XSTRING (entry)) > varlen |
012c6fcb | 1390 | && XSTRING (entry)->data[varlen] == '=' |
bad95d8f RS |
1391 | #ifdef WINDOWSNT |
1392 | /* NT environment variables are case insensitive. */ | |
a9971c6d | 1393 | && ! strnicmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1394 | #else /* not WINDOWSNT */ |
a9971c6d | 1395 | && ! bcmp (XSTRING (entry)->data, var, varlen) |
bad95d8f | 1396 | #endif /* not WINDOWSNT */ |
a9971c6d | 1397 | ) |
012c6fcb JA |
1398 | { |
1399 | *value = (char *) XSTRING (entry)->data + (varlen + 1); | |
fc932ac6 | 1400 | *valuelen = STRING_BYTES (XSTRING (entry)) - (varlen + 1); |
012c6fcb JA |
1401 | return 1; |
1402 | } | |
1403 | } | |
1404 | ||
1405 | return 0; | |
1406 | } | |
1407 | ||
83fa009c | 1408 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0, |
012c6fcb JA |
1409 | "Return the value of environment variable VAR, as a string.\n\ |
1410 | VAR should be a string. Value is nil if VAR is undefined in the environment.\n\ | |
1411 | This function consults the variable ``process-environment'' for its value.") | |
1412 | (var) | |
1413 | Lisp_Object var; | |
1414 | { | |
1415 | char *value; | |
1416 | int valuelen; | |
1417 | ||
1418 | CHECK_STRING (var, 0); | |
fc932ac6 | 1419 | if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)), |
012c6fcb JA |
1420 | &value, &valuelen)) |
1421 | return make_string (value, valuelen); | |
1422 | else | |
1423 | return Qnil; | |
1424 | } | |
1425 | ||
1426 | /* A version of getenv that consults process_environment, easily | |
e576cab4 | 1427 | callable from C. */ |
012c6fcb JA |
1428 | char * |
1429 | egetenv (var) | |
e576cab4 | 1430 | char *var; |
012c6fcb JA |
1431 | { |
1432 | char *value; | |
1433 | int valuelen; | |
1434 | ||
1435 | if (getenv_internal (var, strlen (var), &value, &valuelen)) | |
1436 | return value; | |
1437 | else | |
1438 | return 0; | |
1439 | } | |
1440 | ||
80856e74 JB |
1441 | #endif /* not VMS */ |
1442 | \f | |
8de15d69 | 1443 | /* This is run before init_cmdargs. */ |
7e6c2178 | 1444 | |
dfcf069d | 1445 | void |
8de15d69 RS |
1446 | init_callproc_1 () |
1447 | { | |
1448 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1449 | char *doc_dir = egetenv ("EMACSDOC"); |
1450 | ||
8de15d69 | 1451 | Vdata_directory |
7e6c2178 | 1452 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1453 | : PATH_DATA)); |
35a2f4b8 KH |
1454 | Vdoc_directory |
1455 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1456 | : PATH_DOC)); | |
9453ea7b | 1457 | |
e576cab4 | 1458 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1459 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1460 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1461 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1462 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1463 | } |
1464 | ||
e17f7533 | 1465 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1466 | |
dfcf069d | 1467 | void |
8de15d69 RS |
1468 | init_callproc () |
1469 | { | |
1470 | char *data_dir = egetenv ("EMACSDATA"); | |
1471 | ||
1472 | register char * sh; | |
1473 | Lisp_Object tempdir; | |
1474 | ||
9cc4fad5 | 1475 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1476 | { |
05630743 RS |
1477 | /* Add to the path the lib-src subdir of the installation dir. */ |
1478 | Lisp_Object tem; | |
1479 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1480 | Vinstallation_directory); | |
bad95d8f | 1481 | #ifndef DOS_NT |
1a6640ec | 1482 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc RS |
1483 | if (NILP (Fmember (tem, Vexec_path))) |
1484 | Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil)); | |
1485 | ||
1486 | Vexec_directory = Ffile_name_as_directory (tem); | |
bad95d8f | 1487 | #endif /* not DOS_NT */ |
8de15d69 | 1488 | |
e17f7533 RS |
1489 | /* Maybe use ../etc as well as ../lib-src. */ |
1490 | if (data_dir == 0) | |
1491 | { | |
1492 | tem = Fexpand_file_name (build_string ("etc"), | |
1493 | Vinstallation_directory); | |
1494 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1495 | } |
1496 | } | |
7e933683 RS |
1497 | |
1498 | /* Look for the files that should be in etc. We don't use | |
1499 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1500 | near the executable, and they are never in the build |
7e933683 RS |
1501 | directory when that's different from the source directory. |
1502 | ||
1503 | Instead, if these files are not in the nominal place, we try the | |
1504 | source directory. */ | |
1505 | if (data_dir == 0) | |
1506 | { | |
1507 | Lisp_Object tem, tem1, newdir; | |
1508 | ||
1509 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); | |
1510 | tem1 = Ffile_exists_p (tem); | |
1511 | if (NILP (tem1)) | |
1512 | { | |
1513 | newdir = Fexpand_file_name (build_string ("../etc/"), | |
1514 | build_string (PATH_DUMPLOADSEARCH)); | |
1515 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1516 | tem1 = Ffile_exists_p (tem); | |
1517 | if (!NILP (tem1)) | |
1518 | Vdata_directory = newdir; | |
1519 | } | |
1520 | } | |
80856e74 | 1521 | |
d883eb62 RS |
1522 | #ifndef CANNOT_DUMP |
1523 | if (initialized) | |
1524 | #endif | |
1525 | { | |
1526 | tempdir = Fdirectory_file_name (Vexec_directory); | |
1527 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
1528 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", | |
1529 | Vexec_directory); | |
1530 | } | |
80856e74 | 1531 | |
e576cab4 JB |
1532 | tempdir = Fdirectory_file_name (Vdata_directory); |
1533 | if (access (XSTRING (tempdir)->data, 0) < 0) | |
76d5c6cf RS |
1534 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1535 | Vdata_directory); | |
e576cab4 | 1536 | |
80856e74 JB |
1537 | #ifdef VMS |
1538 | Vshell_file_name = build_string ("*dcl*"); | |
1539 | #else | |
e576cab4 | 1540 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1541 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1542 | #endif | |
8abd035b RS |
1543 | |
1544 | #ifdef VMS | |
1545 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1546 | #else | |
1547 | if (getenv ("TMPDIR")) | |
1548 | { | |
1549 | char *dir = getenv ("TMPDIR"); | |
1550 | Vtemp_file_name_pattern | |
1551 | = Fexpand_file_name (build_string ("emacsXXXXXX"), | |
1552 | build_string (dir)); | |
1553 | } | |
1554 | else | |
1555 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1556 | #endif | |
9fefd2ba JB |
1557 | } |
1558 | ||
dfcf069d | 1559 | void |
9fefd2ba JB |
1560 | set_process_environment () |
1561 | { | |
1562 | register char **envp; | |
80856e74 | 1563 | |
80856e74 JB |
1564 | Vprocess_environment = Qnil; |
1565 | #ifndef CANNOT_DUMP | |
1566 | if (initialized) | |
1567 | #endif | |
1568 | for (envp = environ; *envp; envp++) | |
1569 | Vprocess_environment = Fcons (build_string (*envp), | |
1570 | Vprocess_environment); | |
80856e74 JB |
1571 | } |
1572 | ||
dfcf069d | 1573 | void |
80856e74 JB |
1574 | syms_of_callproc () |
1575 | { | |
bad95d8f | 1576 | #ifdef DOS_NT |
093650fe RS |
1577 | Qbuffer_file_type = intern ("buffer-file-type"); |
1578 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1579 | #endif /* DOS_NT */ |
7e6c2178 | 1580 | |
80856e74 JB |
1581 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
1582 | "*File name to load inferior shells from.\n\ | |
1583 | Initialized from the SHELL environment variable."); | |
1584 | ||
1585 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
1586 | "*List of directories to search programs to run in subprocesses.\n\ | |
1587 | Each element is a string (directory name) or nil (try default directory)."); | |
1588 | ||
1589 | DEFVAR_LISP ("exec-directory", &Vexec_directory, | |
57ca9855 RS |
1590 | "Directory for executables for Emacs to invoke.\n\ |
1591 | More generally, this includes any architecture-dependent files\n\ | |
1592 | that are built and installed from the Emacs distribution."); | |
e576cab4 JB |
1593 | |
1594 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
57ca9855 RS |
1595 | "Directory of machine-independent files that come with GNU Emacs.\n\ |
1596 | These are files intended for Emacs to use while it runs."); | |
80856e74 | 1597 | |
35a2f4b8 KH |
1598 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
1599 | "Directory containing the DOC file that comes with GNU Emacs.\n\ | |
1600 | This is usually the same as data-directory."); | |
1601 | ||
ed61592a JB |
1602 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
1603 | "For internal use by the build procedure only.\n\ | |
1604 | This is the name of the directory in which the build procedure installed\n\ | |
1605 | Emacs's info files; the default value for Info-default-directory-list\n\ | |
1606 | includes this."); | |
1607 | Vconfigure_info_directory = build_string (PATH_INFO); | |
1608 | ||
8abd035b RS |
1609 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
1610 | "Pattern for making names for temporary files.\n\ | |
1611 | This is used by `call-process-region'."); | |
0537ec48 | 1612 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1613 | |
80856e74 | 1614 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
e576cab4 JB |
1615 | "List of environment variables for subprocesses to inherit.\n\ |
1616 | Each element should be a string of the form ENVVARNAME=VALUE.\n\ | |
1617 | The environment which Emacs inherits is placed in this variable\n\ | |
1618 | when Emacs starts."); | |
80856e74 JB |
1619 | |
1620 | #ifndef VMS | |
1621 | defsubr (&Scall_process); | |
83fa009c | 1622 | defsubr (&Sgetenv_internal); |
986ffb24 | 1623 | #endif |
e576cab4 | 1624 | defsubr (&Scall_process_region); |
80856e74 | 1625 | } |