Commit | Line | Data |
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80856e74 | 1 | /* Synchronous subprocess invocation for GNU Emacs. |
fe12847a | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001, |
4e6835db | 3 | 2002, 2003, 2004, 2005, 2006, 2007 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 | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
80856e74 JB |
21 | |
22 | ||
68c45bf0 | 23 | #include <config.h> |
80856e74 | 24 | #include <signal.h> |
e576cab4 | 25 | #include <errno.h> |
565620a5 | 26 | #include <stdio.h> |
80856e74 | 27 | |
03695ace | 28 | #ifndef USE_CRT_DLL |
426b37ae | 29 | extern int errno; |
03695ace | 30 | #endif |
426b37ae | 31 | |
80856e74 JB |
32 | /* Define SIGCHLD as an alias for SIGCLD. */ |
33 | ||
34 | #if !defined (SIGCHLD) && defined (SIGCLD) | |
35 | #define SIGCHLD SIGCLD | |
36 | #endif /* SIGCLD */ | |
37 | ||
38 | #include <sys/types.h> | |
88a64fef | 39 | |
3cbd6585 GM |
40 | #ifdef HAVE_UNISTD_H |
41 | #include <unistd.h> | |
42 | #endif | |
43 | ||
80856e74 | 44 | #include <sys/file.h> |
776a24a1 | 45 | #ifdef HAVE_FCNTL_H |
472e83fe | 46 | #define INCLUDED_FCNTL |
80856e74 JB |
47 | #include <fcntl.h> |
48 | #endif | |
49 | ||
bad95d8f RS |
50 | #ifdef WINDOWSNT |
51 | #define NOMINMAX | |
52 | #include <windows.h> | |
53 | #include <stdlib.h> /* for proper declaration of environ */ | |
54 | #include <fcntl.h> | |
489f9371 | 55 | #include "w32.h" |
bad95d8f RS |
56 | #define _P_NOWAIT 1 /* from process.h */ |
57 | #endif | |
58 | ||
7e6c2178 | 59 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
472e83fe | 60 | #define INCLUDED_FCNTL |
7e6c2178 RS |
61 | #include <fcntl.h> |
62 | #include <sys/stat.h> | |
63 | #include <sys/param.h> | |
64 | #include <errno.h> | |
65 | #endif /* MSDOS */ | |
66 | ||
80856e74 JB |
67 | #ifndef O_RDONLY |
68 | #define O_RDONLY 0 | |
69 | #endif | |
70 | ||
71 | #ifndef O_WRONLY | |
72 | #define O_WRONLY 1 | |
73 | #endif | |
74 | ||
75 | #include "lisp.h" | |
76 | #include "commands.h" | |
77 | #include "buffer.h" | |
32d08644 | 78 | #include "charset.h" |
edf496dd | 79 | #include "ccl.h" |
32d08644 | 80 | #include "coding.h" |
f0b950cf | 81 | #include "composite.h" |
57bda87a | 82 | #include <epaths.h> |
80856e74 | 83 | #include "process.h" |
d177f194 | 84 | #include "syssignal.h" |
a129418f | 85 | #include "systty.h" |
aba637ec | 86 | #include "blockinput.h" |
f105f403 KL |
87 | #include "frame.h" |
88 | #include "termhooks.h" | |
80856e74 | 89 | |
5f027cea EZ |
90 | #ifdef MSDOS |
91 | #include "msdos.h" | |
92 | #endif | |
93 | ||
80856e74 JB |
94 | #ifdef VMS |
95 | extern noshare char **environ; | |
96 | #else | |
03695ace | 97 | #ifndef USE_CRT_DLL |
80856e74 JB |
98 | extern char **environ; |
99 | #endif | |
03695ace | 100 | #endif |
80856e74 | 101 | |
f95c3f91 | 102 | #ifdef HAVE_SETPGID |
2b7e8799 | 103 | #if !defined (USG) || defined (BSD_PGRPS) |
320695d8 | 104 | #undef setpgrp |
f95c3f91 GM |
105 | #define setpgrp setpgid |
106 | #endif | |
2b7e8799 | 107 | #endif |
f95c3f91 | 108 | |
b81a1b72 SM |
109 | Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes; |
110 | Lisp_Object Vdata_directory, Vdoc_directory; | |
1e7ce61b | 111 | Lisp_Object Vconfigure_info_directory, Vshared_game_score_directory; |
8abd035b | 112 | Lisp_Object Vtemp_file_name_pattern; |
80856e74 JB |
113 | |
114 | Lisp_Object Vshell_file_name; | |
115 | ||
80856e74 | 116 | Lisp_Object Vprocess_environment; |
80856e74 | 117 | |
bad95d8f | 118 | #ifdef DOS_NT |
093650fe | 119 | Lisp_Object Qbuffer_file_type; |
bad95d8f | 120 | #endif /* DOS_NT */ |
093650fe | 121 | |
80856e74 JB |
122 | /* True iff we are about to fork off a synchronous process or if we |
123 | are waiting for it. */ | |
124 | int synch_process_alive; | |
125 | ||
126 | /* Nonzero => this is a string explaining death of synchronous subprocess. */ | |
127 | char *synch_process_death; | |
128 | ||
ca498128 JD |
129 | /* Nonzero => this is the signal number that terminated the subprocess. */ |
130 | int synch_process_termsig; | |
131 | ||
80856e74 JB |
132 | /* If synch_process_death is zero, |
133 | this is exit code of synchronous subprocess. */ | |
134 | int synch_process_retcode; | |
f105f403 | 135 | |
80856e74 | 136 | \f |
37d54121 RS |
137 | /* Clean up when exiting Fcall_process. |
138 | On MSDOS, delete the temporary file on any kind of termination. | |
139 | On Unix, kill the process and any children on termination by signal. */ | |
140 | ||
141 | /* Nonzero if this is termination due to exit. */ | |
142 | static int call_process_exited; | |
143 | ||
80856e74 JB |
144 | #ifndef VMS /* VMS version is in vmsproc.c. */ |
145 | ||
d177f194 JB |
146 | static Lisp_Object |
147 | call_process_kill (fdpid) | |
148 | Lisp_Object fdpid; | |
149 | { | |
68c45bf0 | 150 | emacs_close (XFASTINT (Fcar (fdpid))); |
d177f194 JB |
151 | EMACS_KILLPG (XFASTINT (Fcdr (fdpid)), SIGKILL); |
152 | synch_process_alive = 0; | |
153 | return Qnil; | |
154 | } | |
155 | ||
80856e74 JB |
156 | Lisp_Object |
157 | call_process_cleanup (fdpid) | |
158 | Lisp_Object fdpid; | |
159 | { | |
e0f712ba | 160 | #if defined (MSDOS) || defined (MAC_OS8) |
7e6c2178 | 161 | /* for MSDOS fdpid is really (fd . tempfile) */ |
c1350752 KH |
162 | register Lisp_Object file; |
163 | file = Fcdr (fdpid); | |
68c45bf0 | 164 | emacs_close (XFASTINT (Fcar (fdpid))); |
d5db4077 KR |
165 | if (strcmp (SDATA (file), NULL_DEVICE) != 0) |
166 | unlink (SDATA (file)); | |
e0f712ba | 167 | #else /* not MSDOS and not MAC_OS8 */ |
d177f194 JB |
168 | register int pid = XFASTINT (Fcdr (fdpid)); |
169 | ||
37d54121 | 170 | if (call_process_exited) |
6b6e798b | 171 | { |
68c45bf0 | 172 | emacs_close (XFASTINT (Fcar (fdpid))); |
6b6e798b RS |
173 | return Qnil; |
174 | } | |
37d54121 | 175 | |
d177f194 JB |
176 | if (EMACS_KILLPG (pid, SIGINT) == 0) |
177 | { | |
aed13378 | 178 | int count = SPECPDL_INDEX (); |
d177f194 JB |
179 | record_unwind_protect (call_process_kill, fdpid); |
180 | message1 ("Waiting for process to die...(type C-g again to kill it instantly)"); | |
181 | immediate_quit = 1; | |
182 | QUIT; | |
183 | wait_for_termination (pid); | |
184 | immediate_quit = 0; | |
185 | specpdl_ptr = specpdl + count; /* Discard the unwind protect. */ | |
186 | message1 ("Waiting for process to die...done"); | |
187 | } | |
80856e74 | 188 | synch_process_alive = 0; |
68c45bf0 | 189 | emacs_close (XFASTINT (Fcar (fdpid))); |
7e6c2178 | 190 | #endif /* not MSDOS */ |
80856e74 JB |
191 | return Qnil; |
192 | } | |
193 | ||
194 | DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, | |
fdb82f93 PJ |
195 | doc: /* Call PROGRAM synchronously in separate process. |
196 | The remaining arguments are optional. | |
197 | The program's input comes from file INFILE (nil means `/dev/null'). | |
198 | Insert output in BUFFER before point; t means current buffer; | |
199 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
200 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
201 | REAL-BUFFER says what to do with standard output, as above, | |
202 | while STDERR-FILE says what to do with standard error in the child. | |
203 | STDERR-FILE may be nil (discard standard error output), | |
204 | t (mix it with ordinary output), or a file name string. | |
205 | ||
206 | Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
207 | Remaining arguments are strings passed as command arguments to PROGRAM. | |
208 | ||
a4feb144 RS |
209 | If executable PROGRAM can't be found as an executable, `call-process' |
210 | signals a Lisp error. `call-process' reports errors in execution of | |
211 | the program only through its return and output. | |
212 | ||
fdb82f93 PJ |
213 | If BUFFER is 0, `call-process' returns immediately with value nil. |
214 | Otherwise it waits for PROGRAM to terminate | |
215 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
216 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
217 | ||
218 | usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 219 | (nargs, args) |
80856e74 JB |
220 | int nargs; |
221 | register Lisp_Object *args; | |
222 | { | |
0aa2630f KS |
223 | Lisp_Object infile, buffer, current_dir, path; |
224 | int display_p; | |
80856e74 JB |
225 | int fd[2]; |
226 | int filefd; | |
227 | register int pid; | |
4da256b1 KS |
228 | #define CALLPROC_BUFFER_SIZE_MIN (16 * 1024) |
229 | #define CALLPROC_BUFFER_SIZE_MAX (4 * CALLPROC_BUFFER_SIZE_MIN) | |
230 | char buf[CALLPROC_BUFFER_SIZE_MAX]; | |
231 | int bufsize = CALLPROC_BUFFER_SIZE_MIN; | |
aed13378 | 232 | int count = SPECPDL_INDEX (); |
2d607244 | 233 | |
4d3b07fd KR |
234 | register const unsigned char **new_argv |
235 | = (const unsigned char **) alloca ((max (2, nargs - 2)) * sizeof (char *)); | |
80856e74 | 236 | struct buffer *old = current_buffer; |
39eaa782 RS |
237 | /* File to use for stderr in the child. |
238 | t means use same as standard output. */ | |
239 | Lisp_Object error_file; | |
7e6c2178 RS |
240 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
241 | char *outf, *tempfile; | |
242 | int outfilefd; | |
243 | #endif | |
e0f712ba | 244 | #ifdef MAC_OS8 |
052062e0 RS |
245 | char *tempfile; |
246 | int outfilefd; | |
247 | #endif | |
80856e74 JB |
248 | #if 0 |
249 | int mask; | |
250 | #endif | |
32d08644 KH |
251 | struct coding_system process_coding; /* coding-system of process output */ |
252 | struct coding_system argument_coding; /* coding-system of arguments */ | |
09494912 RS |
253 | /* Set to the return value of Ffind_operation_coding_system. */ |
254 | Lisp_Object coding_systems; | |
255 | ||
256 | /* Qt denotes that Ffind_operation_coding_system is not yet called. */ | |
257 | coding_systems = Qt; | |
32d08644 | 258 | |
b7826503 | 259 | CHECK_STRING (args[0]); |
80856e74 | 260 | |
39eaa782 RS |
261 | error_file = Qt; |
262 | ||
7e6c2178 RS |
263 | #ifndef subprocesses |
264 | /* Without asynchronous processes we cannot have BUFFER == 0. */ | |
177c0ea7 | 265 | if (nargs >= 3 |
09ffb8b5 | 266 | && (INTEGERP (CONSP (args[2]) ? XCAR (args[2]) : args[2]))) |
7e6c2178 RS |
267 | error ("Operating system cannot handle asynchronous subprocesses"); |
268 | #endif /* subprocesses */ | |
269 | ||
09494912 | 270 | /* Decide the coding-system for giving arguments. */ |
32d08644 KH |
271 | { |
272 | Lisp_Object val, *args2; | |
32d08644 KH |
273 | int i; |
274 | ||
275 | /* If arguments are supplied, we may have to encode them. */ | |
276 | if (nargs >= 5) | |
277 | { | |
30d57b8e RS |
278 | int must_encode = 0; |
279 | ||
e7c1c20e | 280 | for (i = 4; i < nargs; i++) |
b7826503 | 281 | CHECK_STRING (args[i]); |
e7c1c20e | 282 | |
a2286b5c | 283 | for (i = 4; i < nargs; i++) |
30d57b8e RS |
284 | if (STRING_MULTIBYTE (args[i])) |
285 | must_encode = 1; | |
286 | ||
beacaab3 KH |
287 | if (!NILP (Vcoding_system_for_write)) |
288 | val = Vcoding_system_for_write; | |
30d57b8e | 289 | else if (! must_encode) |
beacaab3 KH |
290 | val = Qnil; |
291 | else | |
32d08644 KH |
292 | { |
293 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
294 | args2[0] = Qcall_process; | |
295 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
08ee4e87 | 296 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); |
776b95cb | 297 | if (CONSP (coding_systems)) |
70949dac | 298 | val = XCDR (coding_systems); |
776b95cb | 299 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 300 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 KH |
301 | else |
302 | val = Qnil; | |
32d08644 KH |
303 | } |
304 | setup_coding_system (Fcheck_coding_system (val), &argument_coding); | |
8acb7dad KH |
305 | if (argument_coding.common_flags & CODING_ASCII_INCOMPATIBLE_MASK) |
306 | setup_coding_system (Qraw_text, &argument_coding); | |
76a25e79 KH |
307 | if (argument_coding.eol_type == CODING_EOL_UNDECIDED) |
308 | argument_coding.eol_type = system_eol_type; | |
32d08644 | 309 | } |
32d08644 KH |
310 | } |
311 | ||
e576cab4 JB |
312 | if (nargs >= 2 && ! NILP (args[1])) |
313 | { | |
314 | infile = Fexpand_file_name (args[1], current_buffer->directory); | |
b7826503 | 315 | CHECK_STRING (infile); |
e576cab4 | 316 | } |
80856e74 | 317 | else |
5437e9f9 | 318 | infile = build_string (NULL_DEVICE); |
80856e74 | 319 | |
e576cab4 JB |
320 | if (nargs >= 3) |
321 | { | |
39eaa782 RS |
322 | buffer = args[2]; |
323 | ||
324 | /* If BUFFER is a list, its meaning is | |
325 | (BUFFER-FOR-STDOUT FILE-FOR-STDERR). */ | |
326 | if (CONSP (buffer)) | |
327 | { | |
70949dac | 328 | if (CONSP (XCDR (buffer))) |
45be8a1e | 329 | { |
a9d4f28a | 330 | Lisp_Object stderr_file; |
70949dac | 331 | stderr_file = XCAR (XCDR (buffer)); |
45be8a1e RS |
332 | |
333 | if (NILP (stderr_file) || EQ (Qt, stderr_file)) | |
334 | error_file = stderr_file; | |
335 | else | |
336 | error_file = Fexpand_file_name (stderr_file, Qnil); | |
337 | } | |
338 | ||
70949dac | 339 | buffer = XCAR (buffer); |
39eaa782 | 340 | } |
044512ed | 341 | |
39eaa782 RS |
342 | if (!(EQ (buffer, Qnil) |
343 | || EQ (buffer, Qt) | |
3ffde7d6 | 344 | || INTEGERP (buffer))) |
e576cab4 | 345 | { |
39eaa782 RS |
346 | Lisp_Object spec_buffer; |
347 | spec_buffer = buffer; | |
50fe359b | 348 | buffer = Fget_buffer_create (buffer); |
39eaa782 RS |
349 | /* Mention the buffer name for a better error message. */ |
350 | if (NILP (buffer)) | |
b7826503 PJ |
351 | CHECK_BUFFER (spec_buffer); |
352 | CHECK_BUFFER (buffer); | |
e576cab4 JB |
353 | } |
354 | } | |
177c0ea7 | 355 | else |
e576cab4 | 356 | buffer = Qnil; |
80856e74 | 357 | |
58616e67 JB |
358 | /* Make sure that the child will be able to chdir to the current |
359 | buffer's current directory, or its unhandled equivalent. We | |
360 | can't just have the child check for an error when it does the | |
361 | chdir, since it's in a vfork. | |
362 | ||
363 | We have to GCPRO around this because Fexpand_file_name, | |
364 | Funhandled_file_name_directory, and Ffile_accessible_directory_p | |
365 | might call a file name handling function. The argument list is | |
366 | protected by the caller, so all we really have to worry about is | |
367 | buffer. */ | |
368 | { | |
34b87689 | 369 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
58616e67 JB |
370 | |
371 | current_dir = current_buffer->directory; | |
372 | ||
34b87689 | 373 | GCPRO4 (infile, buffer, current_dir, error_file); |
58616e67 | 374 | |
c52b0b34 KH |
375 | current_dir |
376 | = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir), | |
377 | Qnil); | |
58616e67 JB |
378 | if (NILP (Ffile_accessible_directory_p (current_dir))) |
379 | report_file_error ("Setting current directory", | |
380 | Fcons (current_buffer->directory, Qnil)); | |
381 | ||
34b87689 KH |
382 | if (STRING_MULTIBYTE (infile)) |
383 | infile = ENCODE_FILE (infile); | |
384 | if (STRING_MULTIBYTE (current_dir)) | |
385 | current_dir = ENCODE_FILE (current_dir); | |
386 | if (STRINGP (error_file) && STRING_MULTIBYTE (error_file)) | |
387 | error_file = ENCODE_FILE (error_file); | |
58616e67 JB |
388 | UNGCPRO; |
389 | } | |
390 | ||
0aa2630f | 391 | display_p = INTERACTIVE && nargs >= 4 && !NILP (args[3]); |
80856e74 | 392 | |
d5db4077 | 393 | filefd = emacs_open (SDATA (infile), O_RDONLY, 0); |
80856e74 JB |
394 | if (filefd < 0) |
395 | { | |
34b87689 | 396 | infile = DECODE_FILE (infile); |
e576cab4 | 397 | report_file_error ("Opening process input file", Fcons (infile, Qnil)); |
80856e74 JB |
398 | } |
399 | /* Search for program; barf if not found. */ | |
c52b0b34 KH |
400 | { |
401 | struct gcpro gcpro1; | |
402 | ||
403 | GCPRO1 (current_dir); | |
5c150961 | 404 | openp (Vexec_path, args[0], Vexec_suffixes, &path, make_number (X_OK)); |
c52b0b34 KH |
405 | UNGCPRO; |
406 | } | |
012c6fcb | 407 | if (NILP (path)) |
80856e74 | 408 | { |
68c45bf0 | 409 | emacs_close (filefd); |
80856e74 JB |
410 | report_file_error ("Searching for program", Fcons (args[0], Qnil)); |
411 | } | |
8ee8f447 RS |
412 | |
413 | /* If program file name starts with /: for quoting a magic name, | |
414 | discard that. */ | |
415 | if (SBYTES (path) > 2 && SREF (path, 0) == '/' | |
416 | && SREF (path, 1) == ':') | |
417 | path = Fsubstring (path, make_number (2), Qnil); | |
418 | ||
d5db4077 | 419 | new_argv[0] = SDATA (path); |
c364e618 KH |
420 | if (nargs > 4) |
421 | { | |
422 | register int i; | |
c5bfa12b | 423 | struct gcpro gcpro1, gcpro2, gcpro3; |
c364e618 | 424 | |
c5bfa12b KH |
425 | GCPRO3 (infile, buffer, current_dir); |
426 | argument_coding.dst_multibyte = 0; | |
427 | for (i = 4; i < nargs; i++) | |
c364e618 | 428 | { |
c5bfa12b KH |
429 | argument_coding.src_multibyte = STRING_MULTIBYTE (args[i]); |
430 | if (CODING_REQUIRE_ENCODING (&argument_coding)) | |
c364e618 | 431 | { |
c5bfa12b KH |
432 | /* We must encode this argument. */ |
433 | args[i] = encode_coding_string (args[i], &argument_coding, 1); | |
434 | if (argument_coding.type == coding_type_ccl) | |
435 | setup_ccl_program (&(argument_coding.spec.ccl.encoder), Qnil); | |
c364e618 | 436 | } |
d5db4077 | 437 | new_argv[i - 3] = SDATA (args[i]); |
c364e618 | 438 | } |
c5bfa12b | 439 | UNGCPRO; |
db54baaa | 440 | new_argv[nargs - 3] = 0; |
c364e618 | 441 | } |
db54baaa KH |
442 | else |
443 | new_argv[1] = 0; | |
80856e74 | 444 | |
7e6c2178 | 445 | #ifdef MSDOS /* MW, July 1993 */ |
8a52365c | 446 | if ((outf = egetenv ("TMPDIR"))) |
7e6c2178 RS |
447 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
448 | else | |
449 | { | |
450 | tempfile = alloca (20); | |
451 | *tempfile = '\0'; | |
452 | } | |
453 | dostounix_filename (tempfile); | |
177c0ea7 | 454 | if (*tempfile == '\0' || tempfile[strlen (tempfile) - 1] != '/') |
7e6c2178 RS |
455 | strcat (tempfile, "/"); |
456 | strcat (tempfile, "detmp.XXX"); | |
457 | mktemp (tempfile); | |
458 | ||
459 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
460 | if (outfilefd < 0) | |
461 | { | |
68c45bf0 | 462 | emacs_close (filefd); |
6f89d28a MB |
463 | report_file_error ("Opening process output file", |
464 | Fcons (build_string (tempfile), Qnil)); | |
7e6c2178 | 465 | } |
6f89d28a | 466 | fd[0] = filefd; |
2610078a | 467 | fd[1] = outfilefd; |
6f89d28a | 468 | #endif /* MSDOS */ |
7e6c2178 | 469 | |
e0f712ba | 470 | #ifdef MAC_OS8 |
052062e0 RS |
471 | /* Since we don't have pipes on the Mac, create a temporary file to |
472 | hold the output of the subprocess. */ | |
d5db4077 KR |
473 | tempfile = (char *) alloca (SBYTES (Vtemp_file_name_pattern) + 1); |
474 | bcopy (SDATA (Vtemp_file_name_pattern), tempfile, | |
475 | SBYTES (Vtemp_file_name_pattern) + 1); | |
052062e0 RS |
476 | |
477 | mktemp (tempfile); | |
478 | ||
479 | outfilefd = creat (tempfile, S_IREAD | S_IWRITE); | |
480 | if (outfilefd < 0) | |
481 | { | |
482 | close (filefd); | |
483 | report_file_error ("Opening process output file", | |
484 | Fcons (build_string (tempfile), Qnil)); | |
485 | } | |
486 | fd[0] = filefd; | |
487 | fd[1] = outfilefd; | |
e0f712ba | 488 | #endif /* MAC_OS8 */ |
052062e0 | 489 | |
d50d3dc8 | 490 | if (INTEGERP (buffer)) |
68c45bf0 | 491 | fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; |
80856e74 JB |
492 | else |
493 | { | |
7e6c2178 | 494 | #ifndef MSDOS |
e0f712ba | 495 | #ifndef MAC_OS8 |
db92b288 GM |
496 | errno = 0; |
497 | if (pipe (fd) == -1) | |
498 | { | |
499 | emacs_close (filefd); | |
500 | report_file_error ("Creating process pipe", Qnil); | |
501 | } | |
7e6c2178 | 502 | #endif |
052062e0 | 503 | #endif |
80856e74 JB |
504 | #if 0 |
505 | /* Replaced by close_process_descs */ | |
506 | set_exclusive_use (fd[0]); | |
507 | #endif | |
508 | } | |
509 | ||
510 | { | |
511 | /* child_setup must clobber environ in systems with true vfork. | |
512 | Protect it from permanent change. */ | |
513 | register char **save_environ = environ; | |
514 | register int fd1 = fd[1]; | |
39eaa782 | 515 | int fd_error = fd1; |
80856e74 JB |
516 | |
517 | #if 0 /* Some systems don't have sigblock. */ | |
e065a56e | 518 | mask = sigblock (sigmask (SIGCHLD)); |
80856e74 JB |
519 | #endif |
520 | ||
521 | /* Record that we're about to create a synchronous process. */ | |
522 | synch_process_alive = 1; | |
523 | ||
5c03767e RS |
524 | /* These vars record information from process termination. |
525 | Clear them now before process can possibly terminate, | |
526 | to avoid timing error if process terminates soon. */ | |
527 | synch_process_death = 0; | |
528 | synch_process_retcode = 0; | |
ca498128 | 529 | synch_process_termsig = 0; |
5c03767e | 530 | |
39eaa782 | 531 | if (NILP (error_file)) |
68c45bf0 | 532 | fd_error = emacs_open (NULL_DEVICE, O_WRONLY, 0); |
39eaa782 RS |
533 | else if (STRINGP (error_file)) |
534 | { | |
535 | #ifdef DOS_NT | |
d5db4077 | 536 | fd_error = emacs_open (SDATA (error_file), |
68c45bf0 PE |
537 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
538 | S_IREAD | S_IWRITE); | |
39eaa782 | 539 | #else /* not DOS_NT */ |
d5db4077 | 540 | fd_error = creat (SDATA (error_file), 0666); |
39eaa782 RS |
541 | #endif /* not DOS_NT */ |
542 | } | |
543 | ||
544 | if (fd_error < 0) | |
545 | { | |
68c45bf0 | 546 | emacs_close (filefd); |
6f89d28a | 547 | if (fd[0] != filefd) |
68c45bf0 | 548 | emacs_close (fd[0]); |
39eaa782 | 549 | if (fd1 >= 0) |
68c45bf0 | 550 | emacs_close (fd1); |
6f89d28a MB |
551 | #ifdef MSDOS |
552 | unlink (tempfile); | |
553 | #endif | |
34b87689 KH |
554 | if (NILP (error_file)) |
555 | error_file = build_string (NULL_DEVICE); | |
556 | else if (STRINGP (error_file)) | |
557 | error_file = DECODE_FILE (error_file); | |
558 | report_file_error ("Cannot redirect stderr", Fcons (error_file, Qnil)); | |
39eaa782 | 559 | } |
89e1ec1d | 560 | |
e0f712ba | 561 | #ifdef MAC_OS8 |
052062e0 RS |
562 | { |
563 | /* Call run_mac_command in sysdep.c here directly instead of doing | |
564 | a child_setup as for MSDOS and other platforms. Note that this | |
565 | code does not handle passing the environment to the synchronous | |
566 | Mac subprocess. */ | |
567 | char *infn, *outfn, *errfn, *currdn; | |
177c0ea7 | 568 | |
052062e0 RS |
569 | /* close these files so subprocess can write to them */ |
570 | close (outfilefd); | |
571 | if (fd_error != outfilefd) | |
572 | close (fd_error); | |
573 | fd1 = -1; /* No harm in closing that one! */ | |
574 | ||
d5db4077 | 575 | infn = SDATA (infile); |
052062e0 RS |
576 | outfn = tempfile; |
577 | if (NILP (error_file)) | |
578 | errfn = NULL_DEVICE; | |
579 | else if (EQ (Qt, error_file)) | |
580 | errfn = outfn; | |
581 | else | |
d5db4077 KR |
582 | errfn = SDATA (error_file); |
583 | currdn = SDATA (current_dir); | |
052062e0 RS |
584 | pid = run_mac_command (new_argv, currdn, infn, outfn, errfn); |
585 | ||
586 | /* Record that the synchronous process exited and note its | |
587 | termination status. */ | |
588 | synch_process_alive = 0; | |
589 | synch_process_retcode = pid; | |
590 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 591 | { |
ca9c0567 | 592 | synchronize_system_messages_locale (); |
68c45bf0 PE |
593 | synch_process_death = strerror (errno); |
594 | } | |
052062e0 RS |
595 | |
596 | /* Since CRLF is converted to LF within `decode_coding', we can | |
597 | always open a file with binary mode. */ | |
598 | fd[0] = open (tempfile, O_BINARY); | |
599 | if (fd[0] < 0) | |
600 | { | |
601 | unlink (tempfile); | |
602 | close (filefd); | |
603 | report_file_error ("Cannot re-open temporary file", Qnil); | |
604 | } | |
605 | } | |
e0f712ba | 606 | #else /* not MAC_OS8 */ |
2610078a | 607 | #ifdef MSDOS /* MW, July 1993 */ |
c17c4250 | 608 | /* Note that on MSDOS `child_setup' actually returns the child process |
2610078a KH |
609 | exit status, not its PID, so we assign it to `synch_process_retcode' |
610 | below. */ | |
c17c4250 EZ |
611 | pid = child_setup (filefd, outfilefd, fd_error, (char **) new_argv, |
612 | 0, current_dir); | |
39eaa782 | 613 | |
2610078a KH |
614 | /* Record that the synchronous process exited and note its |
615 | termination status. */ | |
616 | synch_process_alive = 0; | |
617 | synch_process_retcode = pid; | |
618 | if (synch_process_retcode < 0) /* means it couldn't be exec'ed */ | |
68c45bf0 | 619 | { |
ca9c0567 | 620 | synchronize_system_messages_locale (); |
68c45bf0 PE |
621 | synch_process_death = strerror (errno); |
622 | } | |
2610078a | 623 | |
68c45bf0 | 624 | emacs_close (outfilefd); |
2610078a | 625 | if (fd_error != outfilefd) |
68c45bf0 | 626 | emacs_close (fd_error); |
2610078a | 627 | fd1 = -1; /* No harm in closing that one! */ |
32d08644 KH |
628 | /* Since CRLF is converted to LF within `decode_coding', we can |
629 | always open a file with binary mode. */ | |
68c45bf0 | 630 | fd[0] = emacs_open (tempfile, O_RDONLY | O_BINARY, 0); |
2610078a KH |
631 | if (fd[0] < 0) |
632 | { | |
633 | unlink (tempfile); | |
68c45bf0 | 634 | emacs_close (filefd); |
2610078a KH |
635 | report_file_error ("Cannot re-open temporary file", Qnil); |
636 | } | |
637 | #else /* not MSDOS */ | |
bad95d8f | 638 | #ifdef WINDOWSNT |
2d607244 RS |
639 | pid = child_setup (filefd, fd1, fd_error, (char **) new_argv, |
640 | 0, current_dir); | |
bad95d8f | 641 | #else /* not WINDOWSNT */ |
aba637ec KS |
642 | BLOCK_INPUT; |
643 | ||
80856e74 JB |
644 | pid = vfork (); |
645 | ||
646 | if (pid == 0) | |
647 | { | |
648 | if (fd[0] >= 0) | |
68c45bf0 | 649 | emacs_close (fd[0]); |
1e7963c7 RS |
650 | #ifdef HAVE_SETSID |
651 | setsid (); | |
652 | #endif | |
653 | #if defined (USG) && !defined (BSD_PGRPS) | |
80856e74 JB |
654 | setpgrp (); |
655 | #else | |
656 | setpgrp (pid, pid); | |
657 | #endif /* USG */ | |
2d607244 RS |
658 | child_setup (filefd, fd1, fd_error, (char **) new_argv, |
659 | 0, current_dir); | |
80856e74 | 660 | } |
aba637ec KS |
661 | |
662 | UNBLOCK_INPUT; | |
bad95d8f | 663 | #endif /* not WINDOWSNT */ |
cd5f8f60 RS |
664 | |
665 | /* The MSDOS case did this already. */ | |
666 | if (fd_error >= 0) | |
68c45bf0 | 667 | emacs_close (fd_error); |
2610078a | 668 | #endif /* not MSDOS */ |
e0f712ba | 669 | #endif /* not MAC_OS8 */ |
80856e74 | 670 | |
80856e74 JB |
671 | environ = save_environ; |
672 | ||
6b6e798b RS |
673 | /* Close most of our fd's, but not fd[0] |
674 | since we will use that to read input from. */ | |
68c45bf0 | 675 | emacs_close (filefd); |
799abb26 | 676 | if (fd1 >= 0 && fd1 != fd_error) |
68c45bf0 | 677 | emacs_close (fd1); |
80856e74 JB |
678 | } |
679 | ||
680 | if (pid < 0) | |
681 | { | |
6b6e798b | 682 | if (fd[0] >= 0) |
68c45bf0 | 683 | emacs_close (fd[0]); |
80856e74 JB |
684 | report_file_error ("Doing vfork", Qnil); |
685 | } | |
686 | ||
d50d3dc8 | 687 | if (INTEGERP (buffer)) |
80856e74 | 688 | { |
6b6e798b | 689 | if (fd[0] >= 0) |
68c45bf0 | 690 | emacs_close (fd[0]); |
80856e74 | 691 | #ifndef subprocesses |
e576cab4 JB |
692 | /* If Emacs has been built with asynchronous subprocess support, |
693 | we don't need to do this, I think because it will then have | |
694 | the facilities for handling SIGCHLD. */ | |
80856e74 JB |
695 | wait_without_blocking (); |
696 | #endif /* subprocesses */ | |
80856e74 JB |
697 | return Qnil; |
698 | } | |
699 | ||
6b6e798b | 700 | /* Enable sending signal if user quits below. */ |
37d54121 RS |
701 | call_process_exited = 0; |
702 | ||
e0f712ba | 703 | #if defined(MSDOS) || defined(MAC_OS8) |
7e6c2178 RS |
704 | /* MSDOS needs different cleanup information. */ |
705 | record_unwind_protect (call_process_cleanup, | |
706 | Fcons (make_number (fd[0]), build_string (tempfile))); | |
707 | #else | |
80856e74 JB |
708 | record_unwind_protect (call_process_cleanup, |
709 | Fcons (make_number (fd[0]), make_number (pid))); | |
e0f712ba | 710 | #endif /* not MSDOS and not MAC_OS8 */ |
80856e74 JB |
711 | |
712 | ||
d50d3dc8 | 713 | if (BUFFERP (buffer)) |
80856e74 JB |
714 | Fset_buffer (buffer); |
715 | ||
09494912 RS |
716 | if (NILP (buffer)) |
717 | { | |
718 | /* If BUFFER is nil, we must read process output once and then | |
719 | discard it, so setup coding system but with nil. */ | |
720 | setup_coding_system (Qnil, &process_coding); | |
721 | } | |
722 | else | |
723 | { | |
724 | Lisp_Object val, *args2; | |
725 | ||
726 | val = Qnil; | |
727 | if (!NILP (Vcoding_system_for_read)) | |
728 | val = Vcoding_system_for_read; | |
729 | else | |
730 | { | |
731 | if (EQ (coding_systems, Qt)) | |
732 | { | |
733 | int i; | |
734 | ||
735 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); | |
736 | args2[0] = Qcall_process; | |
737 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
738 | coding_systems | |
739 | = Ffind_operation_coding_system (nargs + 1, args2); | |
740 | } | |
741 | if (CONSP (coding_systems)) | |
70949dac | 742 | val = XCAR (coding_systems); |
09494912 | 743 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 744 | val = XCAR (Vdefault_process_coding_system); |
09494912 RS |
745 | else |
746 | val = Qnil; | |
747 | } | |
748 | setup_coding_system (Fcheck_coding_system (val), &process_coding); | |
749 | /* In unibyte mode, character code conversion should not take | |
750 | place but EOL conversion should. So, setup raw-text or one | |
751 | of the subsidiary according to the information just setup. */ | |
752 | if (NILP (current_buffer->enable_multibyte_characters) | |
753 | && !NILP (val)) | |
754 | setup_raw_text_coding_system (&process_coding); | |
755 | } | |
c5bfa12b KH |
756 | process_coding.src_multibyte = 0; |
757 | process_coding.dst_multibyte | |
758 | = (BUFFERP (buffer) | |
759 | ? ! NILP (XBUFFER (buffer)->enable_multibyte_characters) | |
760 | : ! NILP (current_buffer->enable_multibyte_characters)); | |
09494912 | 761 | |
80856e74 JB |
762 | immediate_quit = 1; |
763 | QUIT; | |
764 | ||
765 | { | |
766 | register int nread; | |
0ad477db | 767 | int first = 1; |
6e3bfbb2 | 768 | int total_read = 0; |
321fecde | 769 | int carryover = 0; |
0aa2630f | 770 | int display_on_the_fly = display_p; |
05b44e90 | 771 | struct coding_system saved_coding; |
f778b157 KH |
772 | int pt_orig = PT, pt_byte_orig = PT_BYTE; |
773 | int inserted; | |
05b44e90 KH |
774 | |
775 | saved_coding = process_coding; | |
f0b950cf KH |
776 | if (process_coding.composing != COMPOSITION_DISABLED) |
777 | coding_allocate_composition_data (&process_coding, PT); | |
60558b19 | 778 | while (1) |
80856e74 | 779 | { |
60558b19 RS |
780 | /* Repeatedly read until we've filled as much as possible |
781 | of the buffer size we have. But don't read | |
8e6208c5 | 782 | less than 1024--save that for the next bufferful. */ |
321fecde | 783 | nread = carryover; |
60558b19 | 784 | while (nread < bufsize - 1024) |
00fb3e95 | 785 | { |
4da256b1 | 786 | int this_read = emacs_read (fd[0], buf + nread, |
68c45bf0 | 787 | bufsize - nread); |
60558b19 RS |
788 | |
789 | if (this_read < 0) | |
790 | goto give_up; | |
791 | ||
792 | if (this_read == 0) | |
7a7ab107 KH |
793 | { |
794 | process_coding.mode |= CODING_MODE_LAST_BLOCK; | |
795 | break; | |
796 | } | |
60558b19 RS |
797 | |
798 | nread += this_read; | |
7a7ab107 | 799 | total_read += this_read; |
60558b19 | 800 | |
7a7ab107 KH |
801 | if (display_on_the_fly) |
802 | break; | |
803 | } | |
60558b19 RS |
804 | |
805 | /* Now NREAD is the total amount of data in the buffer. */ | |
80856e74 | 806 | immediate_quit = 0; |
177c0ea7 | 807 | |
012c6fcb | 808 | if (!NILP (buffer)) |
32d08644 | 809 | { |
c5bfa12b | 810 | if (! CODING_MAY_REQUIRE_DECODING (&process_coding)) |
4da256b1 | 811 | insert_1_both (buf, nread, nread, 0, 1, 0); |
32d08644 KH |
812 | else |
813 | { /* We have to decode the input. */ | |
f0b950cf KH |
814 | int size; |
815 | char *decoding_buf; | |
32d08644 | 816 | |
f0b950cf KH |
817 | repeat_decoding: |
818 | size = decoding_buffer_size (&process_coding, nread); | |
819 | decoding_buf = (char *) xmalloc (size); | |
177c0ea7 | 820 | |
b252f801 KH |
821 | /* We can't use the macro CODING_REQUIRE_DETECTION |
822 | because it always returns nonzero if the coding | |
823 | system requires EOL detection. Here, we have to | |
824 | check only whether or not the coding system | |
825 | requires text-encoding detection. */ | |
826 | if (process_coding.type == coding_type_undecided) | |
950a45d0 | 827 | { |
4da256b1 | 828 | detect_coding (&process_coding, buf, nread); |
950a45d0 | 829 | if (process_coding.composing != COMPOSITION_DISABLED) |
07c381ad KH |
830 | /* We have not yet allocated the composition |
831 | data because the coding type was undecided. */ | |
950a45d0 KH |
832 | coding_allocate_composition_data (&process_coding, PT); |
833 | } | |
2d892150 KH |
834 | if (process_coding.cmp_data) |
835 | process_coding.cmp_data->char_offset = PT; | |
177c0ea7 | 836 | |
4da256b1 | 837 | decode_coding (&process_coding, buf, decoding_buf, |
321fecde | 838 | nread, size); |
177c0ea7 | 839 | |
7a7ab107 KH |
840 | if (display_on_the_fly |
841 | && saved_coding.type == coding_type_undecided | |
842 | && process_coding.type != coding_type_undecided) | |
843 | { | |
844 | /* We have detected some coding system. But, | |
845 | there's a possibility that the detection was | |
0aa2630f KS |
846 | done by insufficient data. So, we try the code |
847 | detection again with more data. */ | |
a871dd58 | 848 | xfree (decoding_buf); |
7a7ab107 KH |
849 | display_on_the_fly = 0; |
850 | process_coding = saved_coding; | |
851 | carryover = nread; | |
0aa2630f KS |
852 | /* This is to make the above condition always |
853 | fails in the future. */ | |
854 | saved_coding.type = coding_type_no_conversion; | |
7a7ab107 KH |
855 | continue; |
856 | } | |
177c0ea7 | 857 | |
321fecde | 858 | if (process_coding.produced > 0) |
2d892150 KH |
859 | insert_1_both (decoding_buf, process_coding.produced_char, |
860 | process_coding.produced, 0, 1, 0); | |
a871dd58 | 861 | xfree (decoding_buf); |
7bdba03c GM |
862 | |
863 | if (process_coding.result == CODING_FINISH_INCONSISTENT_EOL) | |
864 | { | |
865 | Lisp_Object eol_type, coding; | |
866 | ||
867 | if (process_coding.eol_type == CODING_EOL_CR) | |
868 | { | |
869 | /* CRs have been replaced with LFs. Undo | |
870 | that in the text inserted above. */ | |
871 | unsigned char *p; | |
177c0ea7 | 872 | |
7bdba03c | 873 | move_gap_both (PT, PT_BYTE); |
177c0ea7 | 874 | |
7bdba03c GM |
875 | p = BYTE_POS_ADDR (pt_byte_orig); |
876 | for (; p < GPT_ADDR; ++p) | |
877 | if (*p == '\n') | |
878 | *p = '\r'; | |
879 | } | |
880 | else if (process_coding.eol_type == CODING_EOL_CRLF) | |
881 | { | |
882 | /* CR LFs have been replaced with LFs. Undo | |
883 | that by inserting CRs in front of LFs in | |
884 | the text inserted above. */ | |
885 | EMACS_INT bytepos, old_pt, old_pt_byte, nCR; | |
886 | ||
887 | old_pt = PT; | |
888 | old_pt_byte = PT_BYTE; | |
889 | nCR = 0; | |
177c0ea7 | 890 | |
7bdba03c GM |
891 | for (bytepos = PT_BYTE - 1; |
892 | bytepos >= pt_byte_orig; | |
893 | --bytepos) | |
894 | if (FETCH_BYTE (bytepos) == '\n') | |
895 | { | |
896 | EMACS_INT charpos = BYTE_TO_CHAR (bytepos); | |
897 | TEMP_SET_PT_BOTH (charpos, bytepos); | |
898 | insert_1_both ("\r", 1, 1, 0, 1, 0); | |
899 | ++nCR; | |
900 | } | |
901 | ||
902 | TEMP_SET_PT_BOTH (old_pt + nCR, old_pt_byte + nCR); | |
903 | } | |
904 | ||
905 | /* Set the coding system symbol to that for | |
906 | Unix-like EOL. */ | |
907 | eol_type = Fget (saved_coding.symbol, Qeol_type); | |
908 | if (VECTORP (eol_type) | |
909 | && ASIZE (eol_type) == 3 | |
910 | && SYMBOLP (AREF (eol_type, CODING_EOL_LF))) | |
911 | coding = AREF (eol_type, CODING_EOL_LF); | |
912 | else | |
913 | coding = saved_coding.symbol; | |
177c0ea7 | 914 | |
7bdba03c GM |
915 | process_coding.symbol = coding; |
916 | process_coding.eol_type = CODING_EOL_LF; | |
917 | process_coding.mode | |
918 | &= ~CODING_MODE_INHIBIT_INCONSISTENT_EOL; | |
919 | } | |
177c0ea7 | 920 | |
f0b950cf KH |
921 | nread -= process_coding.consumed; |
922 | carryover = nread; | |
321fecde | 923 | if (carryover > 0) |
c5bfa12b KH |
924 | /* As CARRYOVER should not be that large, we had |
925 | better avoid overhead of bcopy. */ | |
4da256b1 | 926 | BCOPY_SHORT (buf + process_coding.consumed, buf, |
c5bfa12b | 927 | carryover); |
f0b950cf KH |
928 | if (process_coding.result == CODING_FINISH_INSUFFICIENT_CMP) |
929 | { | |
930 | /* The decoding ended because of insufficient data | |
931 | area to record information about composition. | |
932 | We must try decoding with additional data area | |
2d892150 | 933 | before reading more output for the process. */ |
f0b950cf KH |
934 | coding_allocate_composition_data (&process_coding, PT); |
935 | goto repeat_decoding; | |
936 | } | |
32d08644 KH |
937 | } |
938 | } | |
c5bfa12b | 939 | |
321fecde | 940 | if (process_coding.mode & CODING_MODE_LAST_BLOCK) |
c5bfa12b | 941 | break; |
6e3bfbb2 | 942 | |
4da256b1 | 943 | #if (CALLPROC_BUFFER_SIZE_MIN != CALLPROC_BUFFER_SIZE_MAX) |
6e3bfbb2 | 944 | /* Make the buffer bigger as we continue to read more data, |
4da256b1 KS |
945 | but not past CALLPROC_BUFFER_SIZE_MAX. */ |
946 | if (bufsize < CALLPROC_BUFFER_SIZE_MAX && total_read > 32 * bufsize) | |
947 | if ((bufsize *= 2) > CALLPROC_BUFFER_SIZE_MAX) | |
948 | bufsize = CALLPROC_BUFFER_SIZE_MAX; | |
949 | #endif | |
6e3bfbb2 | 950 | |
0aa2630f | 951 | if (display_p) |
0ad477db RS |
952 | { |
953 | if (first) | |
954 | prepare_menu_bars (); | |
955 | first = 0; | |
3007ebfb | 956 | redisplay_preserve_echo_area (1); |
0aa2630f KS |
957 | /* This variable might have been set to 0 for code |
958 | detection. In that case, we set it back to 1 because | |
959 | we should have already detected a coding system. */ | |
960 | display_on_the_fly = 1; | |
0ad477db | 961 | } |
80856e74 JB |
962 | immediate_quit = 1; |
963 | QUIT; | |
964 | } | |
60558b19 | 965 | give_up: ; |
80856e74 | 966 | |
2d892150 KH |
967 | if (!NILP (buffer) |
968 | && process_coding.cmp_data) | |
969 | { | |
970 | coding_restore_composition (&process_coding, Fcurrent_buffer ()); | |
971 | coding_free_composition_data (&process_coding); | |
972 | } | |
f0b950cf | 973 | |
838c9726 | 974 | { |
aed13378 | 975 | int post_read_count = SPECPDL_INDEX (); |
838c9726 KH |
976 | |
977 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
978 | inserted = PT - pt_orig; | |
979 | TEMP_SET_PT_BOTH (pt_orig, pt_byte_orig); | |
980 | if (SYMBOLP (process_coding.post_read_conversion) | |
981 | && !NILP (Ffboundp (process_coding.post_read_conversion))) | |
982 | call1 (process_coding.post_read_conversion, make_number (inserted)); | |
f778b157 | 983 | |
838c9726 | 984 | Vlast_coding_system_used = process_coding.symbol; |
bbd29cfe | 985 | |
838c9726 KH |
986 | /* If the caller required, let the buffer inherit the |
987 | coding-system used to decode the process output. */ | |
988 | if (inherit_process_coding_system) | |
989 | call1 (intern ("after-insert-file-set-buffer-file-coding-system"), | |
990 | make_number (total_read)); | |
991 | ||
992 | unbind_to (post_read_count, Qnil); | |
993 | } | |
3b440bb5 EZ |
994 | } |
995 | ||
80856e74 JB |
996 | /* Wait for it to terminate, unless it already has. */ |
997 | wait_for_termination (pid); | |
998 | ||
999 | immediate_quit = 0; | |
1000 | ||
1001 | set_buffer_internal (old); | |
1002 | ||
37d54121 RS |
1003 | /* Don't kill any children that the subprocess may have left behind |
1004 | when exiting. */ | |
1005 | call_process_exited = 1; | |
1006 | ||
80856e74 JB |
1007 | unbind_to (count, Qnil); |
1008 | ||
ca498128 JD |
1009 | if (synch_process_termsig) |
1010 | { | |
1011 | char *signame; | |
1012 | ||
1013 | synchronize_system_messages_locale (); | |
1014 | signame = strsignal (synch_process_termsig); | |
1015 | ||
1016 | if (signame == 0) | |
1017 | signame = "unknown"; | |
1018 | ||
1019 | synch_process_death = signame; | |
1020 | } | |
1021 | ||
80856e74 | 1022 | if (synch_process_death) |
68c45bf0 PE |
1023 | return code_convert_string_norecord (build_string (synch_process_death), |
1024 | Vlocale_coding_system, 0); | |
80856e74 JB |
1025 | return make_number (synch_process_retcode); |
1026 | } | |
1027 | #endif | |
1028 | \f | |
9fefd2ba | 1029 | static Lisp_Object |
80856e74 JB |
1030 | delete_temp_file (name) |
1031 | Lisp_Object name; | |
1032 | { | |
1a271e14 KR |
1033 | /* Suppress jka-compr handling, etc. */ |
1034 | int count = SPECPDL_INDEX (); | |
1035 | specbind (intern ("file-name-handler-alist"), Qnil); | |
2e3dc201 | 1036 | internal_delete_file (name); |
1a271e14 | 1037 | unbind_to (count, Qnil); |
320695d8 | 1038 | return Qnil; |
80856e74 JB |
1039 | } |
1040 | ||
1041 | DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, | |
fdb82f93 PJ |
1042 | 3, MANY, 0, |
1043 | doc: /* Send text from START to END to a synchronous process running PROGRAM. | |
1044 | The remaining arguments are optional. | |
1045 | Delete the text if fourth arg DELETE is non-nil. | |
1046 | ||
1047 | Insert output in BUFFER before point; t means current buffer; | |
1048 | nil for BUFFER means discard it; 0 means discard and don't wait. | |
1049 | BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, | |
1050 | REAL-BUFFER says what to do with standard output, as above, | |
1051 | while STDERR-FILE says what to do with standard error in the child. | |
1052 | STDERR-FILE may be nil (discard standard error output), | |
1053 | t (mix it with ordinary output), or a file name string. | |
1054 | ||
1055 | Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted. | |
1056 | Remaining args are passed to PROGRAM at startup as command args. | |
1057 | ||
ba9a5174 | 1058 | If BUFFER is 0, `call-process-region' returns immediately with value nil. |
fdb82f93 PJ |
1059 | Otherwise it waits for PROGRAM to terminate |
1060 | and returns a numeric exit status or a signal description string. | |
d98b59b5 MB |
1061 | If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. |
1062 | ||
1063 | usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */) | |
fdb82f93 | 1064 | (nargs, args) |
80856e74 JB |
1065 | int nargs; |
1066 | register Lisp_Object *args; | |
1067 | { | |
39323a7e KH |
1068 | struct gcpro gcpro1; |
1069 | Lisp_Object filename_string; | |
1070 | register Lisp_Object start, end; | |
aed13378 | 1071 | int count = SPECPDL_INDEX (); |
08ee4e87 | 1072 | /* Qt denotes we have not yet called Ffind_operation_coding_system. */ |
09494912 | 1073 | Lisp_Object coding_systems; |
32d08644 KH |
1074 | Lisp_Object val, *args2; |
1075 | int i; | |
bad95d8f | 1076 | #ifdef DOS_NT |
7e6c2178 | 1077 | char *tempfile; |
7e6c2178 RS |
1078 | char *outf = '\0'; |
1079 | ||
8a52365c EZ |
1080 | if ((outf = egetenv ("TMPDIR")) |
1081 | || (outf = egetenv ("TMP")) | |
1082 | || (outf = egetenv ("TEMP"))) | |
7e6c2178 RS |
1083 | strcpy (tempfile = alloca (strlen (outf) + 20), outf); |
1084 | else | |
1085 | { | |
1086 | tempfile = alloca (20); | |
1087 | *tempfile = '\0'; | |
1088 | } | |
0774fcf8 | 1089 | if (!IS_DIRECTORY_SEP (tempfile[strlen (tempfile) - 1])) |
7e6c2178 | 1090 | strcat (tempfile, "/"); |
5711b547 RS |
1091 | if ('/' == DIRECTORY_SEP) |
1092 | dostounix_filename (tempfile); | |
1093 | else | |
1094 | unixtodos_filename (tempfile); | |
0774fcf8 RS |
1095 | #ifdef WINDOWSNT |
1096 | strcat (tempfile, "emXXXXXX"); | |
1097 | #else | |
7e6c2178 | 1098 | strcat (tempfile, "detmp.XXX"); |
0774fcf8 | 1099 | #endif |
bad95d8f | 1100 | #else /* not DOS_NT */ |
d5db4077 KR |
1101 | char *tempfile = (char *) alloca (SBYTES (Vtemp_file_name_pattern) + 1); |
1102 | bcopy (SDATA (Vtemp_file_name_pattern), tempfile, | |
1103 | SBYTES (Vtemp_file_name_pattern) + 1); | |
bad95d8f | 1104 | #endif /* not DOS_NT */ |
7e6c2178 | 1105 | |
09494912 RS |
1106 | coding_systems = Qt; |
1107 | ||
1ddc85a4 DL |
1108 | #ifdef HAVE_MKSTEMP |
1109 | { | |
d277f1f7 YM |
1110 | int fd; |
1111 | ||
1112 | BLOCK_INPUT; | |
1113 | fd = mkstemp (tempfile); | |
1114 | UNBLOCK_INPUT; | |
1ddc85a4 DL |
1115 | if (fd == -1) |
1116 | report_file_error ("Failed to open temporary file", | |
1117 | Fcons (Vtemp_file_name_pattern, Qnil)); | |
1118 | else | |
1119 | close (fd); | |
1120 | } | |
1121 | #else | |
80856e74 | 1122 | mktemp (tempfile); |
1ddc85a4 | 1123 | #endif |
80856e74 JB |
1124 | |
1125 | filename_string = build_string (tempfile); | |
39323a7e | 1126 | GCPRO1 (filename_string); |
80856e74 JB |
1127 | start = args[0]; |
1128 | end = args[1]; | |
32d08644 | 1129 | /* Decide coding-system of the contents of the temporary file. */ |
91489411 RS |
1130 | if (!NILP (Vcoding_system_for_write)) |
1131 | val = Vcoding_system_for_write; | |
1132 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
32d08644 KH |
1133 | val = Qnil; |
1134 | else | |
beacaab3 | 1135 | { |
91489411 RS |
1136 | args2 = (Lisp_Object *) alloca ((nargs + 1) * sizeof *args2); |
1137 | args2[0] = Qcall_process_region; | |
1138 | for (i = 0; i < nargs; i++) args2[i + 1] = args[i]; | |
1139 | coding_systems = Ffind_operation_coding_system (nargs + 1, args2); | |
1140 | if (CONSP (coding_systems)) | |
70949dac | 1141 | val = XCDR (coding_systems); |
91489411 | 1142 | else if (CONSP (Vdefault_process_coding_system)) |
70949dac | 1143 | val = XCDR (Vdefault_process_coding_system); |
beacaab3 | 1144 | else |
91489411 | 1145 | val = Qnil; |
beacaab3 | 1146 | } |
32d08644 | 1147 | |
168afdaa | 1148 | { |
aed13378 | 1149 | int count1 = SPECPDL_INDEX (); |
168afdaa RS |
1150 | |
1151 | specbind (intern ("coding-system-for-write"), val); | |
bb951f0e KR |
1152 | /* POSIX lets mk[s]temp use "."; don't invoke jka-compr if we |
1153 | happen to get a ".Z" suffix. */ | |
1154 | specbind (intern ("file-name-handler-alist"), Qnil); | |
168afdaa RS |
1155 | Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil); |
1156 | ||
1157 | unbind_to (count1, Qnil); | |
1158 | } | |
91489411 | 1159 | |
177c0ea7 | 1160 | /* Note that Fcall_process takes care of binding |
91489411 | 1161 | coding-system-for-read. */ |
093650fe | 1162 | |
80856e74 JB |
1163 | record_unwind_protect (delete_temp_file, filename_string); |
1164 | ||
edf496dd | 1165 | if (nargs > 3 && !NILP (args[3])) |
80856e74 JB |
1166 | Fdelete_region (start, end); |
1167 | ||
edf496dd KH |
1168 | if (nargs > 3) |
1169 | { | |
1170 | args += 2; | |
1171 | nargs -= 2; | |
1172 | } | |
1173 | else | |
1174 | { | |
1175 | args[0] = args[2]; | |
1176 | nargs = 2; | |
1177 | } | |
1178 | args[1] = filename_string; | |
80856e74 | 1179 | |
edf496dd | 1180 | RETURN_UNGCPRO (unbind_to (count, Fcall_process (nargs, args))); |
80856e74 JB |
1181 | } |
1182 | \f | |
1183 | #ifndef VMS /* VMS version is in vmsproc.c. */ | |
1184 | ||
dfcf069d AS |
1185 | static int relocate_fd (); |
1186 | ||
5990851d KL |
1187 | static char ** |
1188 | add_env (char **env, char **new_env, char *string) | |
1189 | { | |
1190 | char **ep; | |
1191 | int ok = 1; | |
1192 | if (string == NULL) | |
1193 | return new_env; | |
1194 | ||
1195 | /* See if this string duplicates any string already in the env. | |
1196 | If so, don't put it in. | |
1197 | When an env var has multiple definitions, | |
1198 | we keep the definition that comes first in process-environment. */ | |
1199 | for (ep = env; ok && ep != new_env; ep++) | |
1200 | { | |
1201 | char *p = *ep, *q = string; | |
1202 | while (ok) | |
1203 | { | |
1204 | if (*q != *p) | |
1205 | break; | |
1206 | if (*q == 0) | |
1207 | /* The string is a lone variable name; keep it for now, we | |
1208 | will remove it later. It is a placeholder for a | |
1209 | variable that is not to be included in the environment. */ | |
1210 | break; | |
1211 | if (*q == '=') | |
1212 | ok = 0; | |
1213 | p++, q++; | |
1214 | } | |
1215 | } | |
1216 | if (ok) | |
1217 | *new_env++ = string; | |
1218 | return new_env; | |
1219 | } | |
1220 | ||
80856e74 JB |
1221 | /* This is the last thing run in a newly forked inferior |
1222 | either synchronous or asynchronous. | |
1223 | Copy descriptors IN, OUT and ERR as descriptors 0, 1 and 2. | |
1224 | Initialize inferior's priority, pgrp, connected dir and environment. | |
1225 | then exec another program based on new_argv. | |
1226 | ||
1227 | This function may change environ for the superior process. | |
1228 | Therefore, the superior process must save and restore the value | |
1229 | of environ around the vfork and the call to this function. | |
1230 | ||
80856e74 | 1231 | SET_PGRP is nonzero if we should put the subprocess into a separate |
177c0ea7 | 1232 | process group. |
e576cab4 JB |
1233 | |
1234 | CURRENT_DIR is an elisp string giving the path of the current | |
1235 | directory the subprocess should have. Since we can't really signal | |
1236 | a decent error from within the child, this should be verified as an | |
1237 | executable directory by the parent. */ | |
80856e74 | 1238 | |
dfcf069d | 1239 | int |
e576cab4 | 1240 | child_setup (in, out, err, new_argv, set_pgrp, current_dir) |
80856e74 JB |
1241 | int in, out, err; |
1242 | register char **new_argv; | |
80856e74 | 1243 | int set_pgrp; |
e576cab4 | 1244 | Lisp_Object current_dir; |
80856e74 | 1245 | { |
e576cab4 | 1246 | char **env; |
7fcf7f05 | 1247 | char *pwd_var; |
bad95d8f RS |
1248 | #ifdef WINDOWSNT |
1249 | int cpid; | |
4252a4bd | 1250 | HANDLE handles[3]; |
bad95d8f | 1251 | #endif /* WINDOWSNT */ |
e576cab4 | 1252 | |
33abe2d9 | 1253 | int pid = getpid (); |
80856e74 | 1254 | |
68d10241 | 1255 | #ifdef SET_EMACS_PRIORITY |
4f0b9d49 | 1256 | { |
31ade731 | 1257 | extern EMACS_INT emacs_priority; |
4f0b9d49 | 1258 | |
68d10241 RS |
1259 | if (emacs_priority < 0) |
1260 | nice (- emacs_priority); | |
4f0b9d49 | 1261 | } |
5b633aeb | 1262 | #endif |
80856e74 JB |
1263 | |
1264 | #ifdef subprocesses | |
1265 | /* Close Emacs's descriptors that this process should not have. */ | |
1266 | close_process_descs (); | |
1267 | #endif | |
c17c4250 EZ |
1268 | /* DOS_NT isn't in a vfork, so if we are in the middle of load-file, |
1269 | we will lose if we call close_load_descs here. */ | |
1270 | #ifndef DOS_NT | |
4458cebe | 1271 | close_load_descs (); |
c17c4250 | 1272 | #endif |
80856e74 JB |
1273 | |
1274 | /* Note that use of alloca is always safe here. It's obvious for systems | |
1275 | that do not have true vfork or that have true (stack) alloca. | |
1276 | If using vfork and C_ALLOCA it is safe because that changes | |
1277 | the superior's static variables as if the superior had done alloca | |
1278 | and will be cleaned up in the usual way. */ | |
e576cab4 | 1279 | { |
7fcf7f05 | 1280 | register char *temp; |
e576cab4 | 1281 | register int i; |
77d78be1 | 1282 | |
d5db4077 | 1283 | i = SBYTES (current_dir); |
16425c4a EZ |
1284 | #ifdef MSDOS |
1285 | /* MSDOS must have all environment variables malloc'ed, because | |
1286 | low-level libc functions that launch subsidiary processes rely | |
1287 | on that. */ | |
1288 | pwd_var = (char *) xmalloc (i + 6); | |
1289 | #else | |
7fcf7f05 | 1290 | pwd_var = (char *) alloca (i + 6); |
16425c4a | 1291 | #endif |
7fcf7f05 RS |
1292 | temp = pwd_var + 4; |
1293 | bcopy ("PWD=", pwd_var, 4); | |
d5db4077 | 1294 | bcopy (SDATA (current_dir), temp, i); |
bad95d8f | 1295 | if (!IS_DIRECTORY_SEP (temp[i - 1])) temp[i++] = DIRECTORY_SEP; |
e576cab4 JB |
1296 | temp[i] = 0; |
1297 | ||
c17c4250 | 1298 | #ifndef DOS_NT |
e576cab4 JB |
1299 | /* We can't signal an Elisp error here; we're in a vfork. Since |
1300 | the callers check the current directory before forking, this | |
1301 | should only return an error if the directory's permissions | |
1302 | are changed between the check and this chdir, but we should | |
1303 | at least check. */ | |
1304 | if (chdir (temp) < 0) | |
20b25e46 | 1305 | _exit (errno); |
b4c7684c | 1306 | #endif |
7fcf7f05 | 1307 | |
c17c4250 EZ |
1308 | #ifdef DOS_NT |
1309 | /* Get past the drive letter, so that d:/ is left alone. */ | |
1310 | if (i > 2 && IS_DEVICE_SEP (temp[1]) && IS_DIRECTORY_SEP (temp[2])) | |
1311 | { | |
1312 | temp += 2; | |
1313 | i -= 2; | |
1314 | } | |
1315 | #endif | |
1316 | ||
7fcf7f05 | 1317 | /* Strip trailing slashes for PWD, but leave "/" and "//" alone. */ |
bad95d8f | 1318 | while (i > 2 && IS_DIRECTORY_SEP (temp[i - 1])) |
7fcf7f05 | 1319 | temp[--i] = 0; |
e576cab4 | 1320 | } |
80856e74 | 1321 | |
5990851d | 1322 | /* Set `env' to a vector of the strings in the environment. */ |
80856e74 JB |
1323 | { |
1324 | register Lisp_Object tem; | |
1325 | register char **new_env; | |
5990851d | 1326 | char **p, **q; |
80856e74 | 1327 | register int new_length; |
a13f8f50 KL |
1328 | Lisp_Object local = get_frame_param (XFRAME (Fframe_with_environment (selected_frame)), |
1329 | Qenvironment); | |
80856e74 JB |
1330 | |
1331 | new_length = 0; | |
f105f403 | 1332 | |
5990851d KL |
1333 | for (tem = Vprocess_environment; |
1334 | CONSP (tem) && STRINGP (XCAR (tem)); | |
1335 | tem = XCDR (tem)) | |
1336 | new_length++; | |
1337 | ||
a13f8f50 | 1338 | for (tem = local; |
70949dac KR |
1339 | CONSP (tem) && STRINGP (XCAR (tem)); |
1340 | tem = XCDR (tem)) | |
80856e74 JB |
1341 | new_length++; |
1342 | ||
7fcf7f05 RS |
1343 | /* new_length + 2 to include PWD and terminating 0. */ |
1344 | env = new_env = (char **) alloca ((new_length + 2) * sizeof (char *)); | |
1345 | ||
1346 | /* If we have a PWD envvar, pass one down, | |
1347 | but with corrected value. */ | |
a13f8f50 | 1348 | if (egetenv ("PWD")) |
7fcf7f05 | 1349 | *new_env++ = pwd_var; |
5990851d KL |
1350 | |
1351 | /* Overrides. */ | |
1352 | for (tem = Vprocess_environment; | |
1353 | CONSP (tem) && STRINGP (XCAR (tem)); | |
1354 | tem = XCDR (tem)) | |
1355 | new_env = add_env (env, new_env, SDATA (XCAR (tem))); | |
80856e74 | 1356 | |
a13f8f50 KL |
1357 | /* Local part of environment. */ |
1358 | for (tem = local; | |
f105f403 KL |
1359 | CONSP (tem) && STRINGP (XCAR (tem)); |
1360 | tem = XCDR (tem)) | |
5990851d KL |
1361 | new_env = add_env (env, new_env, SDATA (XCAR (tem))); |
1362 | ||
1363 | *new_env = 0; | |
1364 | ||
1365 | /* Remove variable names without values. */ | |
1366 | p = q = env; | |
1367 | while (*p != 0) | |
cd9565ba | 1368 | { |
5990851d KL |
1369 | while (*q != 0 && strchr (*q, '=') == NULL) |
1370 | *q++; | |
1371 | *p = *q++; | |
1372 | if (*p != 0) | |
1373 | p++; | |
cd9565ba | 1374 | } |
80856e74 | 1375 | } |
bad95d8f RS |
1376 | #ifdef WINDOWSNT |
1377 | prepare_standard_handles (in, out, err, handles); | |
d5db4077 | 1378 | set_process_dir (SDATA (current_dir)); |
bad95d8f | 1379 | #else /* not WINDOWSNT */ |
426b37ae JB |
1380 | /* Make sure that in, out, and err are not actually already in |
1381 | descriptors zero, one, or two; this could happen if Emacs is | |
7e6c2178 | 1382 | started with its standard in, out, or error closed, as might |
426b37ae | 1383 | happen under X. */ |
f29f9e4a RS |
1384 | { |
1385 | int oin = in, oout = out; | |
1386 | ||
1387 | /* We have to avoid relocating the same descriptor twice! */ | |
1388 | ||
1389 | in = relocate_fd (in, 3); | |
1390 | ||
1391 | if (out == oin) | |
1392 | out = in; | |
1393 | else | |
3e9367e7 | 1394 | out = relocate_fd (out, 3); |
f29f9e4a RS |
1395 | |
1396 | if (err == oin) | |
1397 | err = in; | |
1398 | else if (err == oout) | |
1399 | err = out; | |
1400 | else | |
3e9367e7 | 1401 | err = relocate_fd (err, 3); |
f29f9e4a | 1402 | } |
426b37ae | 1403 | |
c17c4250 | 1404 | #ifndef MSDOS |
68c45bf0 PE |
1405 | emacs_close (0); |
1406 | emacs_close (1); | |
1407 | emacs_close (2); | |
80856e74 JB |
1408 | |
1409 | dup2 (in, 0); | |
1410 | dup2 (out, 1); | |
1411 | dup2 (err, 2); | |
68c45bf0 PE |
1412 | emacs_close (in); |
1413 | emacs_close (out); | |
1414 | emacs_close (err); | |
c17c4250 | 1415 | #endif /* not MSDOS */ |
bad95d8f | 1416 | #endif /* not WINDOWSNT */ |
80856e74 | 1417 | |
6b2cd868 | 1418 | #if defined(USG) && !defined(BSD_PGRPS) |
fdba8590 | 1419 | #ifndef SETPGRP_RELEASES_CTTY |
e576cab4 | 1420 | setpgrp (); /* No arguments but equivalent in this case */ |
fdba8590 | 1421 | #endif |
e576cab4 JB |
1422 | #else |
1423 | setpgrp (pid, pid); | |
1424 | #endif /* USG */ | |
a129418f RS |
1425 | /* setpgrp_of_tty is incorrect here; it uses input_fd. */ |
1426 | EMACS_SET_TTY_PGRP (0, &pid); | |
80856e74 | 1427 | |
c17c4250 EZ |
1428 | #ifdef MSDOS |
1429 | pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); | |
a3f0666f | 1430 | xfree (pwd_var); |
c17c4250 EZ |
1431 | if (pid == -1) |
1432 | /* An error occurred while trying to run the subprocess. */ | |
1433 | report_file_error ("Spawning child process", Qnil); | |
1434 | return pid; | |
1435 | #else /* not MSDOS */ | |
bad95d8f RS |
1436 | #ifdef WINDOWSNT |
1437 | /* Spawn the child. (See ntproc.c:Spawnve). */ | |
1438 | cpid = spawnve (_P_NOWAIT, new_argv[0], new_argv, env); | |
db77d785 | 1439 | reset_standard_handles (in, out, err, handles); |
ff27bfbe KH |
1440 | if (cpid == -1) |
1441 | /* An error occurred while trying to spawn the process. */ | |
1442 | report_file_error ("Spawning child process", Qnil); | |
bad95d8f RS |
1443 | return cpid; |
1444 | #else /* not WINDOWSNT */ | |
80856e74 JB |
1445 | /* execvp does not accept an environment arg so the only way |
1446 | to pass this environment is to set environ. Our caller | |
1447 | is responsible for restoring the ambient value of environ. */ | |
1448 | environ = env; | |
1449 | execvp (new_argv[0], new_argv); | |
1450 | ||
68c45bf0 PE |
1451 | emacs_write (1, "Can't exec program: ", 20); |
1452 | emacs_write (1, new_argv[0], strlen (new_argv[0])); | |
1453 | emacs_write (1, "\n", 1); | |
80856e74 | 1454 | _exit (1); |
bad95d8f | 1455 | #endif /* not WINDOWSNT */ |
7e6c2178 | 1456 | #endif /* not MSDOS */ |
80856e74 JB |
1457 | } |
1458 | ||
a3833dfe | 1459 | /* Move the file descriptor FD so that its number is not less than MINFD. |
426b37ae | 1460 | If the file descriptor is moved at all, the original is freed. */ |
dfcf069d | 1461 | static int |
a3833dfe KH |
1462 | relocate_fd (fd, minfd) |
1463 | int fd, minfd; | |
426b37ae | 1464 | { |
a3833dfe | 1465 | if (fd >= minfd) |
426b37ae JB |
1466 | return fd; |
1467 | else | |
1468 | { | |
1469 | int new = dup (fd); | |
1470 | if (new == -1) | |
1471 | { | |
20c018a0 | 1472 | char *message1 = "Error while setting up child: "; |
826c56ac | 1473 | char *errmessage = strerror (errno); |
20c018a0 | 1474 | char *message2 = "\n"; |
68c45bf0 PE |
1475 | emacs_write (2, message1, strlen (message1)); |
1476 | emacs_write (2, errmessage, strlen (errmessage)); | |
1477 | emacs_write (2, message2, strlen (message2)); | |
426b37ae JB |
1478 | _exit (1); |
1479 | } | |
1480 | /* Note that we hold the original FD open while we recurse, | |
1481 | to guarantee we'll get a new FD if we need it. */ | |
a3833dfe | 1482 | new = relocate_fd (new, minfd); |
68c45bf0 | 1483 | emacs_close (fd); |
426b37ae JB |
1484 | return new; |
1485 | } | |
1486 | } | |
1487 | ||
012c6fcb | 1488 | static int |
da8e8fc1 | 1489 | getenv_internal (var, varlen, value, valuelen, frame) |
012c6fcb JA |
1490 | char *var; |
1491 | int varlen; | |
1492 | char **value; | |
1493 | int *valuelen; | |
da8e8fc1 | 1494 | Lisp_Object frame; |
012c6fcb JA |
1495 | { |
1496 | Lisp_Object scan; | |
5990851d | 1497 | |
a13f8f50 | 1498 | if (NILP (frame)) |
5990851d | 1499 | { |
a13f8f50 KL |
1500 | /* Try to find VAR in Vprocess_environment first. */ |
1501 | for (scan = Vprocess_environment; CONSP (scan); scan = XCDR (scan)) | |
1502 | { | |
1503 | Lisp_Object entry = XCAR (scan); | |
1504 | if (STRINGP (entry) | |
1505 | && SBYTES (entry) >= varlen | |
5990851d | 1506 | #ifdef WINDOWSNT |
a13f8f50 KL |
1507 | /* NT environment variables are case insensitive. */ |
1508 | && ! strnicmp (SDATA (entry), var, varlen) | |
5990851d | 1509 | #else /* not WINDOWSNT */ |
a13f8f50 | 1510 | && ! bcmp (SDATA (entry), var, varlen) |
5990851d | 1511 | #endif /* not WINDOWSNT */ |
a13f8f50 | 1512 | ) |
5990851d | 1513 | { |
a13f8f50 KL |
1514 | if (SBYTES (entry) > varlen && SREF (entry, varlen) == '=') |
1515 | { | |
1516 | *value = (char *) SDATA (entry) + (varlen + 1); | |
1517 | *valuelen = SBYTES (entry) - (varlen + 1); | |
1518 | return 1; | |
1519 | } | |
1520 | else if (SBYTES (entry) == varlen) | |
1521 | { | |
1522 | /* Lone variable names in Vprocess_environment mean that | |
1523 | variable should be removed from the environment. */ | |
1524 | return 0; | |
1525 | } | |
5990851d KL |
1526 | } |
1527 | } | |
a13f8f50 | 1528 | frame = selected_frame; |
5990851d | 1529 | } |
f105f403 KL |
1530 | |
1531 | /* Find the environment in which to search the variable. */ | |
a13f8f50 KL |
1532 | CHECK_FRAME (frame); |
1533 | frame = Fframe_with_environment (frame); | |
012c6fcb | 1534 | |
a13f8f50 KL |
1535 | for (scan = get_frame_param (XFRAME (frame), Qenvironment); |
1536 | CONSP (scan); | |
1537 | scan = XCDR (scan)) | |
012c6fcb | 1538 | { |
c1350752 KH |
1539 | Lisp_Object entry; |
1540 | ||
70949dac | 1541 | entry = XCAR (scan); |
d50d3dc8 | 1542 | if (STRINGP (entry) |
f105f403 KL |
1543 | && SBYTES (entry) > varlen |
1544 | && SREF (entry, varlen) == '=' | |
bad95d8f | 1545 | #ifdef WINDOWSNT |
f105f403 KL |
1546 | /* NT environment variables are case insensitive. */ |
1547 | && ! strnicmp (SDATA (entry), var, varlen) | |
bad95d8f | 1548 | #else /* not WINDOWSNT */ |
f105f403 | 1549 | && ! bcmp (SDATA (entry), var, varlen) |
bad95d8f | 1550 | #endif /* not WINDOWSNT */ |
f105f403 | 1551 | ) |
012c6fcb | 1552 | { |
d5db4077 KR |
1553 | *value = (char *) SDATA (entry) + (varlen + 1); |
1554 | *valuelen = SBYTES (entry) - (varlen + 1); | |
012c6fcb JA |
1555 | return 1; |
1556 | } | |
1557 | } | |
1558 | ||
1559 | return 0; | |
1560 | } | |
1561 | ||
f105f403 | 1562 | DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 2, 0, |
5990851d KL |
1563 | doc: /* Get the value of environment variable VARIABLE. |
1564 | VARIABLE should be a string. Value is nil if VARIABLE is undefined in | |
1565 | the environment. Otherwise, value is a string. | |
f105f403 | 1566 | |
a13f8f50 KL |
1567 | This function searches `process-environment' for VARIABLE. If it is |
1568 | not found there, then it continues the search in the environment list | |
1569 | of the selected frame. | |
5990851d | 1570 | |
a13f8f50 KL |
1571 | If optional parameter FRAME is non-nil, then this function will ignore |
1572 | `process-environment' and will simply look up the variable in that | |
1573 | frame's environment. */) | |
da8e8fc1 KL |
1574 | (variable, frame) |
1575 | Lisp_Object variable, frame; | |
012c6fcb JA |
1576 | { |
1577 | char *value; | |
1578 | int valuelen; | |
1579 | ||
5990851d KL |
1580 | CHECK_STRING (variable); |
1581 | if (getenv_internal (SDATA (variable), SBYTES (variable), | |
da8e8fc1 | 1582 | &value, &valuelen, frame)) |
012c6fcb JA |
1583 | return make_string (value, valuelen); |
1584 | else | |
1585 | return Qnil; | |
1586 | } | |
1587 | ||
5990851d KL |
1588 | /* A version of getenv that consults the Lisp environment lists, |
1589 | easily callable from C. */ | |
012c6fcb JA |
1590 | char * |
1591 | egetenv (var) | |
e576cab4 | 1592 | char *var; |
012c6fcb JA |
1593 | { |
1594 | char *value; | |
1595 | int valuelen; | |
1596 | ||
f105f403 | 1597 | if (getenv_internal (var, strlen (var), &value, &valuelen, Qnil)) |
012c6fcb JA |
1598 | return value; |
1599 | else | |
1600 | return 0; | |
1601 | } | |
1602 | ||
80856e74 JB |
1603 | #endif /* not VMS */ |
1604 | \f | |
8de15d69 | 1605 | /* This is run before init_cmdargs. */ |
177c0ea7 | 1606 | |
dfcf069d | 1607 | void |
8de15d69 RS |
1608 | init_callproc_1 () |
1609 | { | |
1610 | char *data_dir = egetenv ("EMACSDATA"); | |
35a2f4b8 KH |
1611 | char *doc_dir = egetenv ("EMACSDOC"); |
1612 | ||
8de15d69 | 1613 | Vdata_directory |
177c0ea7 | 1614 | = Ffile_name_as_directory (build_string (data_dir ? data_dir |
8de15d69 | 1615 | : PATH_DATA)); |
35a2f4b8 KH |
1616 | Vdoc_directory |
1617 | = Ffile_name_as_directory (build_string (doc_dir ? doc_dir | |
1618 | : PATH_DOC)); | |
9453ea7b | 1619 | |
e576cab4 | 1620 | /* Check the EMACSPATH environment variable, defaulting to the |
57bda87a | 1621 | PATH_EXEC path from epaths.h. */ |
e576cab4 | 1622 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); |
80856e74 JB |
1623 | Vexec_directory = Ffile_name_as_directory (Fcar (Vexec_path)); |
1624 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
8de15d69 RS |
1625 | } |
1626 | ||
e17f7533 | 1627 | /* This is run after init_cmdargs, when Vinstallation_directory is valid. */ |
8de15d69 | 1628 | |
dfcf069d | 1629 | void |
8de15d69 RS |
1630 | init_callproc () |
1631 | { | |
1632 | char *data_dir = egetenv ("EMACSDATA"); | |
177c0ea7 | 1633 | |
8de15d69 RS |
1634 | register char * sh; |
1635 | Lisp_Object tempdir; | |
1636 | ||
9cc4fad5 | 1637 | if (!NILP (Vinstallation_directory)) |
8de15d69 | 1638 | { |
05630743 RS |
1639 | /* Add to the path the lib-src subdir of the installation dir. */ |
1640 | Lisp_Object tem; | |
1641 | tem = Fexpand_file_name (build_string ("lib-src"), | |
1642 | Vinstallation_directory); | |
bad95d8f | 1643 | #ifndef DOS_NT |
1a6640ec | 1644 | /* MSDOS uses wrapped binaries, so don't do this. */ |
0fa248bc | 1645 | if (NILP (Fmember (tem, Vexec_path))) |
70ec1377 RS |
1646 | { |
1647 | Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); | |
1648 | Vexec_path = Fcons (tem, Vexec_path); | |
1649 | Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); | |
1650 | } | |
177c0ea7 | 1651 | |
0fa248bc | 1652 | Vexec_directory = Ffile_name_as_directory (tem); |
bad95d8f | 1653 | #endif /* not DOS_NT */ |
8de15d69 | 1654 | |
e17f7533 RS |
1655 | /* Maybe use ../etc as well as ../lib-src. */ |
1656 | if (data_dir == 0) | |
1657 | { | |
1658 | tem = Fexpand_file_name (build_string ("etc"), | |
1659 | Vinstallation_directory); | |
1660 | Vdoc_directory = Ffile_name_as_directory (tem); | |
8de15d69 RS |
1661 | } |
1662 | } | |
7e933683 RS |
1663 | |
1664 | /* Look for the files that should be in etc. We don't use | |
1665 | Vinstallation_directory, because these files are never installed | |
e17f7533 | 1666 | near the executable, and they are never in the build |
7e933683 RS |
1667 | directory when that's different from the source directory. |
1668 | ||
1669 | Instead, if these files are not in the nominal place, we try the | |
1670 | source directory. */ | |
1671 | if (data_dir == 0) | |
1672 | { | |
70ec1377 | 1673 | Lisp_Object tem, tem1, srcdir; |
7e933683 | 1674 | |
70ec1377 RS |
1675 | srcdir = Fexpand_file_name (build_string ("../src/"), |
1676 | build_string (PATH_DUMPLOADSEARCH)); | |
7e933683 RS |
1677 | tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); |
1678 | tem1 = Ffile_exists_p (tem); | |
70ec1377 | 1679 | if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1)) |
7e933683 | 1680 | { |
70ec1377 | 1681 | Lisp_Object newdir; |
7e933683 RS |
1682 | newdir = Fexpand_file_name (build_string ("../etc/"), |
1683 | build_string (PATH_DUMPLOADSEARCH)); | |
1684 | tem = Fexpand_file_name (build_string ("GNU"), newdir); | |
1685 | tem1 = Ffile_exists_p (tem); | |
1686 | if (!NILP (tem1)) | |
1687 | Vdata_directory = newdir; | |
1688 | } | |
1689 | } | |
80856e74 | 1690 | |
d883eb62 RS |
1691 | #ifndef CANNOT_DUMP |
1692 | if (initialized) | |
1693 | #endif | |
1694 | { | |
1695 | tempdir = Fdirectory_file_name (Vexec_directory); | |
d5db4077 | 1696 | if (access (SDATA (tempdir), 0) < 0) |
d883eb62 RS |
1697 | dir_warning ("Warning: arch-dependent data dir (%s) does not exist.\n", |
1698 | Vexec_directory); | |
1699 | } | |
80856e74 | 1700 | |
e576cab4 | 1701 | tempdir = Fdirectory_file_name (Vdata_directory); |
d5db4077 | 1702 | if (access (SDATA (tempdir), 0) < 0) |
76d5c6cf RS |
1703 | dir_warning ("Warning: arch-independent data dir (%s) does not exist.\n", |
1704 | Vdata_directory); | |
e576cab4 | 1705 | |
80856e74 JB |
1706 | #ifdef VMS |
1707 | Vshell_file_name = build_string ("*dcl*"); | |
1708 | #else | |
e576cab4 | 1709 | sh = (char *) getenv ("SHELL"); |
80856e74 JB |
1710 | Vshell_file_name = build_string (sh ? sh : "/bin/sh"); |
1711 | #endif | |
8abd035b RS |
1712 | |
1713 | #ifdef VMS | |
1714 | Vtemp_file_name_pattern = build_string ("tmp:emacsXXXXXX."); | |
1715 | #else | |
1716 | if (getenv ("TMPDIR")) | |
1717 | { | |
1718 | char *dir = getenv ("TMPDIR"); | |
1719 | Vtemp_file_name_pattern | |
a13f8f50 KL |
1720 | = Fexpand_file_name (build_string ("emacsXXXXXX"), |
1721 | build_string (dir)); | |
8abd035b RS |
1722 | } |
1723 | else | |
1724 | Vtemp_file_name_pattern = build_string ("/tmp/emacsXXXXXX"); | |
1725 | #endif | |
63789758 | 1726 | |
40b49d4b JB |
1727 | #ifdef DOS_NT |
1728 | Vshared_game_score_directory = Qnil; | |
1729 | #else | |
63789758 RS |
1730 | Vshared_game_score_directory = build_string (PATH_GAME); |
1731 | if (NILP (Ffile_directory_p (Vshared_game_score_directory))) | |
1732 | Vshared_game_score_directory = Qnil; | |
40b49d4b | 1733 | #endif |
9fefd2ba JB |
1734 | } |
1735 | ||
dfcf069d | 1736 | void |
a13f8f50 | 1737 | set_initial_environment () |
9fefd2ba JB |
1738 | { |
1739 | register char **envp; | |
a13f8f50 | 1740 | Lisp_Object env = Qnil; |
80856e74 JB |
1741 | #ifndef CANNOT_DUMP |
1742 | if (initialized) | |
1743 | #endif | |
a13f8f50 KL |
1744 | { |
1745 | for (envp = environ; *envp; envp++) | |
1746 | env = Fcons (build_string (*envp), env); | |
1747 | store_frame_param (SELECTED_FRAME(), Qenvironment, env); | |
1748 | } | |
80856e74 JB |
1749 | } |
1750 | ||
dfcf069d | 1751 | void |
80856e74 JB |
1752 | syms_of_callproc () |
1753 | { | |
bad95d8f | 1754 | #ifdef DOS_NT |
093650fe RS |
1755 | Qbuffer_file_type = intern ("buffer-file-type"); |
1756 | staticpro (&Qbuffer_file_type); | |
bad95d8f | 1757 | #endif /* DOS_NT */ |
7e6c2178 | 1758 | |
80856e74 | 1759 | DEFVAR_LISP ("shell-file-name", &Vshell_file_name, |
fdb82f93 | 1760 | doc: /* *File name to load inferior shells from. |
b20b29be EZ |
1761 | Initialized from the SHELL environment variable, or to a system-dependent |
1762 | default if SHELL is not set. */); | |
80856e74 JB |
1763 | |
1764 | DEFVAR_LISP ("exec-path", &Vexec_path, | |
fdb82f93 PJ |
1765 | doc: /* *List of directories to search programs to run in subprocesses. |
1766 | Each element is a string (directory name) or nil (try default directory). */); | |
80856e74 | 1767 | |
b81a1b72 | 1768 | DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, |
fdb82f93 PJ |
1769 | doc: /* *List of suffixes to try to find executable file names. |
1770 | Each element is a string. */); | |
33d5af99 | 1771 | Vexec_suffixes = Qnil; |
b81a1b72 | 1772 | |
80856e74 | 1773 | DEFVAR_LISP ("exec-directory", &Vexec_directory, |
fdb82f93 PJ |
1774 | doc: /* Directory for executables for Emacs to invoke. |
1775 | More generally, this includes any architecture-dependent files | |
1776 | that are built and installed from the Emacs distribution. */); | |
e576cab4 JB |
1777 | |
1778 | DEFVAR_LISP ("data-directory", &Vdata_directory, | |
fdb82f93 PJ |
1779 | doc: /* Directory of machine-independent files that come with GNU Emacs. |
1780 | These are files intended for Emacs to use while it runs. */); | |
80856e74 | 1781 | |
35a2f4b8 | 1782 | DEFVAR_LISP ("doc-directory", &Vdoc_directory, |
fdb82f93 | 1783 | doc: /* Directory containing the DOC file that comes with GNU Emacs. |
ebf24b59 | 1784 | This is usually the same as `data-directory'. */); |
35a2f4b8 | 1785 | |
ed61592a | 1786 | DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, |
fdb82f93 PJ |
1787 | doc: /* For internal use by the build procedure only. |
1788 | This is the name of the directory in which the build procedure installed | |
ebf24b59 | 1789 | Emacs's info files; the default value for `Info-default-directory-list' |
fdb82f93 | 1790 | includes this. */); |
ed61592a JB |
1791 | Vconfigure_info_directory = build_string (PATH_INFO); |
1792 | ||
1e7ce61b | 1793 | DEFVAR_LISP ("shared-game-score-directory", &Vshared_game_score_directory, |
b065672a CW |
1794 | doc: /* Directory of score files for games which come with GNU Emacs. |
1795 | If this variable is nil, then Emacs is unable to use a shared directory. */); | |
40b49d4b JB |
1796 | #ifdef DOS_NT |
1797 | Vshared_game_score_directory = Qnil; | |
1798 | #else | |
63789758 | 1799 | Vshared_game_score_directory = build_string (PATH_GAME); |
40b49d4b | 1800 | #endif |
b065672a | 1801 | |
8abd035b | 1802 | DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, |
fdb82f93 PJ |
1803 | doc: /* Pattern for making names for temporary files. |
1804 | This is used by `call-process-region'. */); | |
0537ec48 | 1805 | /* This variable is initialized in init_callproc. */ |
8abd035b | 1806 | |
5990851d KL |
1807 | DEFVAR_LISP ("process-environment", &Vprocess_environment, |
1808 | doc: /* List of overridden environment variables for subprocesses to inherit. | |
1809 | Each element should be a string of the form ENVVARNAME=VALUE. | |
1810 | ||
a13f8f50 KL |
1811 | Entries in this list take precedence to those in the frame-local |
1812 | environments. Therefore, let-binding `process-environment' is an easy | |
1813 | way to temporarily change the value of an environment variable, | |
1814 | irrespective of where it comes from. To use `process-environment' to | |
1815 | remove an environment variable, include only its name in the list, | |
1816 | without "=VALUE". | |
5990851d KL |
1817 | |
1818 | This variable is set to nil when Emacs starts. | |
1819 | ||
1820 | If multiple entries define the same variable, the first one always | |
1821 | takes precedence. | |
1822 | ||
1823 | Non-ASCII characters are encoded according to the initial value of | |
1824 | `locale-coding-system', i.e. the elements must normally be decoded for | |
1825 | use. | |
1826 | ||
776a24a1 | 1827 | See `setenv' and `getenv'. */); |
86f5ca04 | 1828 | Vprocess_environment = Qnil; |
80856e74 JB |
1829 | |
1830 | #ifndef VMS | |
1831 | defsubr (&Scall_process); | |
83fa009c | 1832 | defsubr (&Sgetenv_internal); |
986ffb24 | 1833 | #endif |
e576cab4 | 1834 | defsubr (&Scall_process_region); |
80856e74 | 1835 | } |
ab5796a9 MB |
1836 | |
1837 | /* arch-tag: 769b8045-1df7-4d2b-8968-e3fb49017f95 | |
1838 | (do not change this comment) */ |