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