Commit | Line | Data |
---|---|---|
efb859b4 | 1 | /* Client process that communicates with GNU Emacs acting as server. |
de073ce3 GM |
2 | Copyright (C) 1986, 1987, 1994, 1999, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
46cec291 RS |
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 | |
92af894f | 9 | the Free Software Foundation; either version 2, or (at your option) |
46cec291 RS |
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. */ | |
46cec291 RS |
21 | |
22 | ||
23 | #define NO_SHORTNAMES | |
18160b98 | 24 | #include <../src/config.h> |
4e23f2ba | 25 | #undef signal |
46cec291 | 26 | |
8b8f50f8 | 27 | #include <ctype.h> |
8f9aaa0a RS |
28 | #include <stdio.h> |
29 | #include <getopt.h> | |
79f13bba DL |
30 | #ifdef HAVE_UNISTD_H |
31 | #include <unistd.h> | |
32 | #endif | |
8f9aaa0a | 33 | |
9f637eea GM |
34 | #ifdef VMS |
35 | # include "vms-pwd.h" | |
36 | #else | |
37 | # include <pwd.h> | |
38 | #endif /* not VMS */ | |
39 | ||
8f9aaa0a RS |
40 | char *getenv (), *getwd (); |
41 | char *getcwd (); | |
8f9aaa0a RS |
42 | |
43 | /* This is defined with -D from the compilation command, | |
44 | which extracts it from ../lisp/version.el. */ | |
45 | ||
46 | #ifndef VERSION | |
47 | #define VERSION "unspecified" | |
48 | #endif | |
49 | \f | |
50 | /* Name used to invoke this program. */ | |
51 | char *progname; | |
52 | ||
749ae770 | 53 | /* Nonzero means don't wait for a response from Emacs. --no-wait. */ |
8f9aaa0a RS |
54 | int nowait = 0; |
55 | ||
7f3bff3e AS |
56 | void print_help_and_exit (); |
57 | ||
8f9aaa0a RS |
58 | struct option longopts[] = |
59 | { | |
749ae770 | 60 | { "no-wait", no_argument, NULL, 'n' }, |
8f9aaa0a RS |
61 | { "help", no_argument, NULL, 'H' }, |
62 | { "version", no_argument, NULL, 'V' }, | |
97e3214d | 63 | { "alternate-editor",required_argument, NULL, 'a' }, |
8f9aaa0a RS |
64 | { 0 } |
65 | }; | |
66 | ||
97e3214d GM |
67 | |
68 | const char * alternate_editor = NULL; | |
69 | ||
8f9aaa0a | 70 | /* Decode the options from argv and argc. |
5212210c | 71 | The global variable `optind' will say how many arguments we used up. */ |
8f9aaa0a | 72 | |
5212210c | 73 | void |
8f9aaa0a RS |
74 | decode_options (argc, argv) |
75 | int argc; | |
76 | char **argv; | |
77 | { | |
78 | while (1) | |
79 | { | |
80 | int opt = getopt_long (argc, argv, | |
97e3214d | 81 | "VHna:", longopts, 0); |
8f9aaa0a RS |
82 | |
83 | if (opt == EOF) | |
84 | break; | |
85 | ||
97e3214d GM |
86 | alternate_editor = getenv ("ALTERNATE_EDITOR"); |
87 | ||
8f9aaa0a RS |
88 | switch (opt) |
89 | { | |
90 | case 0: | |
91 | /* If getopt returns 0, then it has already processed a | |
92 | long-named option. We should do nothing. */ | |
93 | break; | |
97e3214d GM |
94 | |
95 | case 'a': | |
96 | alternate_editor = optarg; | |
97 | break; | |
98 | ||
8f9aaa0a RS |
99 | case 'n': |
100 | nowait = 1; | |
101 | break; | |
102 | ||
103 | case 'V': | |
b4e94f42 | 104 | fprintf (stderr, "emacsclient %s\n", VERSION); |
8f9aaa0a RS |
105 | exit (1); |
106 | break; | |
46cec291 | 107 | |
8f9aaa0a RS |
108 | case 'H': |
109 | default: | |
110 | print_help_and_exit (); | |
111 | } | |
112 | } | |
8f9aaa0a RS |
113 | } |
114 | ||
7f3bff3e | 115 | void |
8f9aaa0a RS |
116 | print_help_and_exit () |
117 | { | |
118 | fprintf (stderr, | |
8b8f50f8 | 119 | "Usage: %s [-a ALTERNATE-EDITOR] [-n] [--no-wait] [+LINE[:COLUMN]] FILENAME\n", |
8f9aaa0a | 120 | progname); |
4852ed0e RS |
121 | fprintf (stderr, |
122 | "Or %s --version\n", | |
123 | progname); | |
8f9aaa0a | 124 | fprintf (stderr, |
b4e94f42 | 125 | "Report bugs to bug-gnu-emacs@gnu.org.\n"); |
8f9aaa0a RS |
126 | exit (1); |
127 | } | |
5212210c | 128 | |
f1db6a73 RS |
129 | /* Return a copy of NAME, inserting a & |
130 | before each &, each space, and any initial -. | |
5212210c RS |
131 | Change spaces to underscores, too, so that the |
132 | return value never contains a space. */ | |
133 | ||
134 | char * | |
135 | quote_file_name (name) | |
136 | char *name; | |
137 | { | |
138 | char *copy = (char *) malloc (strlen (name) * 2 + 1); | |
139 | char *p, *q; | |
140 | ||
141 | p = name; | |
142 | q = copy; | |
143 | while (*p) | |
144 | { | |
145 | if (*p == ' ') | |
146 | { | |
f1db6a73 | 147 | *q++ = '&'; |
5212210c RS |
148 | *q++ = '_'; |
149 | p++; | |
150 | } | |
151 | else | |
152 | { | |
f1db6a73 RS |
153 | if (*p == '&' || (*p == '-' && p == name)) |
154 | *q++ = '&'; | |
5212210c RS |
155 | *q++ = *p++; |
156 | } | |
157 | } | |
f1db6a73 | 158 | *q++ = 0; |
5212210c | 159 | |
97e3214d | 160 | |
5212210c RS |
161 | return copy; |
162 | } | |
0c76956f | 163 | |
0c76956f RS |
164 | /* Like malloc but get fatal error if memory is exhausted. */ |
165 | ||
5497dfdb | 166 | long * |
0c76956f RS |
167 | xmalloc (size) |
168 | unsigned int size; | |
169 | { | |
5f32a712 | 170 | long *result = (long *) malloc (size); |
0c76956f RS |
171 | if (result == NULL) |
172 | { | |
173 | perror ("malloc"); | |
174 | exit (1); | |
175 | } | |
176 | return result; | |
177 | } | |
8f9aaa0a | 178 | \f |
97e3214d GM |
179 | /* |
180 | Try to run a different command, or --if no alternate editor is | |
181 | defined-- exit with an errorcode. | |
182 | */ | |
de073ce3 | 183 | void |
97e3214d GM |
184 | fail (argc, argv) |
185 | int argc; | |
186 | char **argv; | |
187 | { | |
188 | if (alternate_editor) | |
189 | { | |
190 | int i = optind -1 ; | |
191 | execvp (alternate_editor, argv + i); | |
23431241 | 192 | return; |
97e3214d GM |
193 | } |
194 | else | |
195 | { | |
196 | exit (1); | |
197 | } | |
198 | } | |
199 | ||
200 | ||
201 | ||
202 | \f | |
b135a7cf | 203 | #if !defined (HAVE_SOCKETS) && !defined (HAVE_SYSVIPC) |
46cec291 | 204 | |
de073ce3 | 205 | int |
46cec291 RS |
206 | main (argc, argv) |
207 | int argc; | |
208 | char **argv; | |
209 | { | |
210 | fprintf (stderr, "%s: Sorry, the Emacs server is supported only\n", | |
211 | argv[0]); | |
212 | fprintf (stderr, "on systems with Berkeley sockets or System V IPC.\n"); | |
97e3214d GM |
213 | |
214 | fail (argc, argv); | |
46cec291 RS |
215 | } |
216 | ||
217 | #else /* HAVE_SOCKETS or HAVE_SYSVIPC */ | |
218 | ||
1e523e3d | 219 | #if defined (HAVE_SOCKETS) && ! defined (NO_SOCKETS_IN_FILE_SYSTEM) |
46cec291 RS |
220 | /* BSD code is very different from SYSV IPC code */ |
221 | ||
222 | #include <sys/types.h> | |
223 | #include <sys/socket.h> | |
224 | #include <sys/un.h> | |
efb859b4 | 225 | #include <sys/stat.h> |
46cec291 RS |
226 | #include <errno.h> |
227 | ||
92af894f | 228 | extern char *strerror (); |
46cec291 RS |
229 | extern int errno; |
230 | ||
9f637eea GM |
231 | /* Three possibilities: |
232 | 2 - can't be `stat'ed (sets errno) | |
233 | 1 - isn't owned by us | |
234 | 0 - success: none of the above */ | |
235 | ||
236 | static int | |
237 | socket_status (socket_name) | |
238 | char *socket_name; | |
239 | { | |
240 | struct stat statbfr; | |
241 | ||
242 | if (stat (socket_name, &statbfr) == -1) | |
243 | return 2; | |
244 | ||
245 | if (statbfr.st_uid != geteuid ()) | |
246 | return 1; | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
340ff9de | 251 | int |
46cec291 RS |
252 | main (argc, argv) |
253 | int argc; | |
254 | char **argv; | |
255 | { | |
a2b3f2b5 RS |
256 | char *system_name; |
257 | int system_name_length; | |
46cec291 | 258 | int s, i; |
23a7488d | 259 | FILE *out, *in; |
46cec291 | 260 | struct sockaddr_un server; |
571512de EZ |
261 | #ifdef SERVER_HOME_DIR |
262 | char *homedir; | |
263 | #endif | |
264 | char *cwd, *str; | |
46cec291 | 265 | char string[BUFSIZ]; |
8f9aaa0a RS |
266 | |
267 | progname = argv[0]; | |
46cec291 | 268 | |
8f9aaa0a | 269 | /* Process options. */ |
5212210c | 270 | decode_options (argc, argv); |
46cec291 | 271 | |
5212210c | 272 | if (argc - optind < 1) |
8f9aaa0a | 273 | print_help_and_exit (); |
46cec291 RS |
274 | |
275 | /* | |
276 | * Open up an AF_UNIX socket in this person's home directory | |
277 | */ | |
278 | ||
279 | if ((s = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) | |
280 | { | |
281 | fprintf (stderr, "%s: ", argv[0]); | |
282 | perror ("socket"); | |
97e3214d | 283 | fail (argc, argv); |
46cec291 | 284 | } |
97e3214d | 285 | |
46cec291 | 286 | server.sun_family = AF_UNIX; |
c5fee545 | 287 | |
efb859b4 | 288 | { |
a2b3f2b5 RS |
289 | system_name_length = 32; |
290 | ||
291 | while (1) | |
292 | { | |
293 | system_name = (char *) xmalloc (system_name_length + 1); | |
294 | ||
295 | /* system_name must be null-terminated string. */ | |
296 | system_name[system_name_length] = '\0'; | |
297 | ||
298 | if (gethostname (system_name, system_name_length) == 0) | |
299 | break; | |
300 | ||
301 | free (system_name); | |
302 | system_name_length *= 2; | |
303 | } | |
c5fee545 KH |
304 | } |
305 | ||
306 | #ifndef SERVER_HOME_DIR | |
307 | { | |
9f637eea | 308 | int sock_status = 0; |
efb859b4 | 309 | |
23431241 | 310 | sprintf (server.sun_path, "/tmp/esrv%d-%s", (int) geteuid (), system_name); |
efb859b4 | 311 | |
9f637eea GM |
312 | /* See if the socket exists, and if it's owned by us. */ |
313 | sock_status = socket_status (server.sun_path); | |
314 | if (sock_status) | |
efb859b4 | 315 | { |
9f637eea GM |
316 | /* Failing that, see if LOGNAME or USER exist and differ from |
317 | our euid. If so, look for a socket based on the UID | |
318 | associated with the name. This is reminiscent of the logic | |
319 | that init_editfns uses to set the global Vuser_full_name. */ | |
320 | ||
321 | char *user_name = (char *) getenv ("LOGNAME"); | |
322 | if (!user_name) | |
323 | user_name = (char *) getenv ("USER"); | |
324 | ||
325 | if (user_name) | |
326 | { | |
327 | struct passwd *pw = getpwnam (user_name); | |
328 | if (pw && (pw->pw_uid != geteuid ())) | |
329 | { | |
330 | /* We're running under su, apparently. */ | |
331 | sprintf (server.sun_path, "/tmp/esrv%d-%s", | |
23431241 | 332 | (int) pw->pw_uid, system_name); |
9f637eea GM |
333 | sock_status = socket_status (server.sun_path); |
334 | } | |
335 | } | |
efb859b4 | 336 | } |
9f637eea GM |
337 | |
338 | switch (sock_status) | |
339 | { | |
340 | case 1: | |
341 | /* There's a socket, but it isn't owned by us. This is OK if | |
342 | we are root. */ | |
343 | if (0 != geteuid ()) | |
344 | { | |
345 | fprintf (stderr, "%s: Invalid socket owner\n", argv[0]); | |
346 | fail (argc, argv); | |
347 | } | |
348 | break; | |
349 | ||
350 | case 2: | |
351 | /* `stat' failed */ | |
352 | if (errno == ENOENT) | |
353 | fprintf (stderr, | |
354 | "%s: can't find socket; have you started the server?\n", | |
355 | argv[0]); | |
356 | else | |
357 | fprintf (stderr, "%s: can't stat %s: %s\n", | |
358 | argv[0], server.sun_path, strerror (errno)); | |
359 | fail (argc, argv); | |
360 | break; | |
361 | } | |
efb859b4 | 362 | } |
46cec291 RS |
363 | #else |
364 | if ((homedir = getenv ("HOME")) == NULL) | |
365 | { | |
366 | fprintf (stderr, "%s: No home directory\n", argv[0]); | |
97e3214d | 367 | fail (argc, argv); |
46cec291 RS |
368 | } |
369 | strcpy (server.sun_path, homedir); | |
b135a7cf | 370 | strcat (server.sun_path, "/.emacs-server-"); |
b135a7cf | 371 | strcat (server.sun_path, system_name); |
46cec291 RS |
372 | #endif |
373 | ||
4e23f2ba JB |
374 | if (connect (s, (struct sockaddr *) &server, strlen (server.sun_path) + 2) |
375 | < 0) | |
46cec291 RS |
376 | { |
377 | fprintf (stderr, "%s: ", argv[0]); | |
378 | perror ("connect"); | |
97e3214d | 379 | fail (argc, argv); |
46cec291 | 380 | } |
23a7488d RS |
381 | |
382 | /* We use the stream OUT to send our command to the server. */ | |
46cec291 RS |
383 | if ((out = fdopen (s, "r+")) == NULL) |
384 | { | |
385 | fprintf (stderr, "%s: ", argv[0]); | |
386 | perror ("fdopen"); | |
97e3214d | 387 | fail (argc, argv); |
46cec291 RS |
388 | } |
389 | ||
23a7488d RS |
390 | /* We use the stream IN to read the response. |
391 | We used to use just one stream for both output and input | |
392 | on the socket, but reversing direction works nonportably: | |
393 | on some systems, the output appears as the first input; | |
394 | on other systems it does not. */ | |
395 | if ((in = fdopen (s, "r+")) == NULL) | |
396 | { | |
397 | fprintf (stderr, "%s: ", argv[0]); | |
398 | perror ("fdopen"); | |
97e3214d | 399 | fail (argc, argv); |
23a7488d RS |
400 | } |
401 | ||
e397a017 | 402 | #ifdef BSD_SYSTEM |
46cec291 | 403 | cwd = getwd (string); |
ee6a193c RS |
404 | #else |
405 | cwd = getcwd (string, sizeof string); | |
406 | #endif | |
46cec291 RS |
407 | if (cwd == 0) |
408 | { | |
409 | /* getwd puts message in STRING if it fails. */ | |
bd252662 RS |
410 | fprintf (stderr, "%s: %s (%s)\n", argv[0], |
411 | #ifdef BSD_SYSTEM | |
412 | string, | |
413 | #else | |
414 | "Cannot get current working directory", | |
415 | #endif | |
416 | strerror (errno)); | |
97e3214d | 417 | fail (argc, argv); |
46cec291 RS |
418 | } |
419 | ||
5212210c RS |
420 | if (nowait) |
421 | fprintf (out, "-nowait "); | |
292d74a3 | 422 | |
5212210c RS |
423 | for (i = optind; i < argc; i++) |
424 | { | |
46cec291 RS |
425 | if (*argv[i] == '+') |
426 | { | |
427 | char *p = argv[i] + 1; | |
cb1cdedd | 428 | while (isdigit ((unsigned char) *p) || *p == ':') p++; |
46cec291 | 429 | if (*p != 0) |
0343a017 | 430 | fprintf (out, "%s/", quote_file_name (cwd)); |
46cec291 RS |
431 | } |
432 | else if (*argv[i] != '/') | |
0343a017 | 433 | fprintf (out, "%s/", quote_file_name (cwd)); |
5212210c RS |
434 | |
435 | fprintf (out, "%s ", quote_file_name (argv[i])); | |
46cec291 RS |
436 | } |
437 | fprintf (out, "\n"); | |
438 | fflush (out); | |
439 | ||
292d74a3 RS |
440 | /* Maybe wait for an answer. */ |
441 | if (nowait) | |
442 | return 0; | |
443 | ||
46cec291 RS |
444 | printf ("Waiting for Emacs..."); |
445 | fflush (stdout); | |
446 | ||
23a7488d RS |
447 | /* Now, wait for an answer and print any messages. On some systems, |
448 | the first line we read will actually be the output we just sent. | |
449 | We can't predict whether that will happen, so if it does, we | |
450 | detect it by recognizing `Client: ' at the beginning. */ | |
46cec291 | 451 | |
23a7488d | 452 | while (str = fgets (string, BUFSIZ, in)) |
46cec291 | 453 | printf ("%s", str); |
23a7488d | 454 | |
340ff9de | 455 | return 0; |
46cec291 RS |
456 | } |
457 | ||
458 | #else /* This is the SYSV IPC section */ | |
459 | ||
460 | #include <sys/types.h> | |
461 | #include <sys/ipc.h> | |
462 | #include <sys/msg.h> | |
b135a7cf | 463 | #include <sys/utsname.h> |
46cec291 | 464 | #include <stdio.h> |
bd252662 RS |
465 | #include <errno.h> |
466 | extern int errno; | |
46cec291 | 467 | |
1518a9eb | 468 | char *getwd (), *getcwd (), *getenv (); |
b135a7cf | 469 | struct utsname system_name; |
1518a9eb | 470 | |
46cec291 RS |
471 | main (argc, argv) |
472 | int argc; | |
473 | char **argv; | |
474 | { | |
475 | int s; | |
476 | key_t key; | |
1518a9eb RS |
477 | /* Size of text allocated in MSGP. */ |
478 | int size_allocated = BUFSIZ; | |
479 | /* Amount of text used in MSGP. */ | |
480 | int used; | |
481 | struct msgbuf *msgp | |
482 | = (struct msgbuf *) malloc (sizeof (struct msgbuf) + size_allocated); | |
46cec291 RS |
483 | struct msqid_ds * msg_st; |
484 | char *homedir, buf[BUFSIZ]; | |
485 | char gwdirb[BUFSIZ]; | |
486 | char *cwd; | |
487 | char *temp; | |
8f9aaa0a RS |
488 | |
489 | progname = argv[0]; | |
490 | ||
491 | /* Process options. */ | |
5212210c | 492 | decode_options (argc, argv); |
46cec291 | 493 | |
5212210c | 494 | if (argc - optind < 1) |
8f9aaa0a | 495 | print_help_and_exit (); |
46cec291 RS |
496 | |
497 | /* | |
b135a7cf | 498 | * Create a message queue using ~/.emacs-server as the path for ftok |
46cec291 RS |
499 | */ |
500 | if ((homedir = getenv ("HOME")) == NULL) | |
501 | { | |
502 | fprintf (stderr, "%s: No home directory\n", argv[0]); | |
503 | exit (1); | |
504 | } | |
505 | strcpy (buf, homedir); | |
b135a7cf RS |
506 | #ifndef HAVE_LONG_FILE_NAMES |
507 | /* If file names are short, we can't fit the host name. */ | |
508 | strcat (buf, "/.emacs-server"); | |
509 | #else | |
510 | strcat (buf, "/.emacs-server-"); | |
511 | uname (&system_name); | |
512 | strcat (buf, system_name.nodename); | |
513 | #endif | |
46cec291 RS |
514 | creat (buf, 0600); |
515 | key = ftok (buf, 1); /* unlikely to be anyone else using it */ | |
61a93162 | 516 | s = msgget (key, 0600 | IPC_CREAT); |
46cec291 RS |
517 | if (s == -1) |
518 | { | |
519 | fprintf (stderr, "%s: ", argv[0]); | |
520 | perror ("msgget"); | |
521 | exit (1); | |
522 | } | |
523 | ||
524 | /* Determine working dir, so we can prefix it to all the arguments. */ | |
e397a017 | 525 | #ifdef BSD_SYSTEM |
46cec291 RS |
526 | temp = getwd (gwdirb); |
527 | #else | |
528 | temp = getcwd (gwdirb, sizeof gwdirb); | |
529 | #endif | |
530 | ||
531 | cwd = gwdirb; | |
532 | if (temp != 0) | |
533 | { | |
534 | /* On some systems, cwd can look like `@machine/...'; | |
535 | ignore everything before the first slash in such a case. */ | |
536 | while (*cwd && *cwd != '/') | |
537 | cwd++; | |
538 | strcat (cwd, "/"); | |
539 | } | |
540 | else | |
541 | { | |
bd252662 | 542 | #ifdef BSD_SYSTEM |
26396b1b | 543 | fprintf (stderr, "%s: %s\n", argv[0], cwd); |
bd252662 RS |
544 | #else |
545 | fprintf (stderr, "%s: Cannot get current working directory: %s\n", | |
546 | argv[0], strerror (errno)); | |
547 | #endif | |
97e3214d | 548 | fail (argc, argv); |
46cec291 RS |
549 | } |
550 | ||
551 | msgp->mtext[0] = 0; | |
1518a9eb | 552 | used = 0; |
5212210c RS |
553 | |
554 | if (nowait) | |
555 | { | |
556 | strcat (msgp->mtext, "-nowait "); | |
557 | used += 8; | |
558 | } | |
559 | ||
560 | argc -= optind; | |
561 | argv += optind; | |
562 | ||
46cec291 RS |
563 | while (argc) |
564 | { | |
1518a9eb | 565 | int need_cwd = 0; |
cd33a5a0 | 566 | char *modified_arg = argv[0]; |
292d74a3 | 567 | |
5212210c | 568 | if (*modified_arg == '+') |
46cec291 | 569 | { |
cd33a5a0 | 570 | char *p = modified_arg + 1; |
8b8f50f8 GM |
571 | while (isdigit (*p) || *p == ':') |
572 | p++; | |
46cec291 | 573 | if (*p != 0) |
1518a9eb | 574 | need_cwd = 1; |
46cec291 | 575 | } |
cd33a5a0 | 576 | else if (*modified_arg != '/') |
1518a9eb RS |
577 | need_cwd = 1; |
578 | ||
5212210c RS |
579 | modified_arg = quote_file_name (modified_arg); |
580 | ||
1518a9eb | 581 | if (need_cwd) |
0343a017 KH |
582 | /* Overestimate in case we have to quote something in CWD. */ |
583 | used += 2 * strlen (cwd); | |
cd33a5a0 | 584 | used += strlen (modified_arg) + 1; |
1518a9eb RS |
585 | while (used + 2 > size_allocated) |
586 | { | |
587 | size_allocated *= 2; | |
588 | msgp = (struct msgbuf *) realloc (msgp, | |
589 | (sizeof (struct msgbuf) | |
590 | + size_allocated)); | |
591 | } | |
592 | ||
593 | if (need_cwd) | |
0343a017 | 594 | strcat (msgp->mtext, quote_file_name (cwd)); |
46cec291 | 595 | |
cd33a5a0 | 596 | strcat (msgp->mtext, modified_arg); |
46cec291 RS |
597 | strcat (msgp->mtext, " "); |
598 | argv++; argc--; | |
599 | } | |
600 | strcat (msgp->mtext, "\n"); | |
1518a9eb RS |
601 | #ifdef HPUX /* HPUX has a bug. */ |
602 | if (strlen (msgp->mtext) >= 512) | |
603 | { | |
18a2fa91 | 604 | fprintf (stderr, "%s: args too long for msgsnd\n", progname); |
97e3214d | 605 | fail (argc, argv); |
1518a9eb RS |
606 | } |
607 | #endif | |
46cec291 RS |
608 | msgp->mtype = 1; |
609 | if (msgsnd (s, msgp, strlen (msgp->mtext)+1, 0) < 0) | |
610 | { | |
defb80d7 | 611 | fprintf (stderr, "%s: ", progname); |
46cec291 | 612 | perror ("msgsnd"); |
97e3214d | 613 | fail (argc, argv); |
46cec291 | 614 | } |
292d74a3 RS |
615 | |
616 | /* Maybe wait for an answer. */ | |
617 | if (nowait) | |
618 | return 0; | |
619 | ||
46cec291 RS |
620 | printf ("Waiting for Emacs..."); |
621 | fflush (stdout); | |
622 | ||
623 | msgrcv (s, msgp, BUFSIZ, getpid (), 0); /* wait for anything back */ | |
624 | strcpy (buf, msgp->mtext); | |
625 | ||
dc3c30fe KH |
626 | printf ("\n"); |
627 | if (*buf) | |
628 | printf ("%s\n", buf); | |
46cec291 RS |
629 | exit (0); |
630 | } | |
631 | ||
632 | #endif /* HAVE_SYSVIPC */ | |
633 | ||
634 | #endif /* HAVE_SOCKETS or HAVE_SYSVIPC */ | |
27711600 RM |
635 | \f |
636 | #ifndef HAVE_STRERROR | |
637 | char * | |
638 | strerror (errnum) | |
639 | int errnum; | |
640 | { | |
641 | extern char *sys_errlist[]; | |
642 | extern int sys_nerr; | |
643 | ||
644 | if (errnum >= 0 && errnum < sys_nerr) | |
645 | return sys_errlist[errnum]; | |
646 | return (char *) "Unknown error"; | |
647 | } | |
648 | ||
649 | #endif /* ! HAVE_STRERROR */ |