Commit | Line | Data |
---|---|---|
efb859b4 | 1 | /* Client process that communicates with GNU Emacs acting as server. |
9f637eea | 2 | Copyright (C) 1986, 1987, 1994, 1999, 2000 Free Software Foundation, Inc. |
46cec291 RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
92af894f | 8 | the Free Software Foundation; either version 2, or (at your option) |
46cec291 RS |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
46cec291 RS |
20 | |
21 | ||
22 | #define NO_SHORTNAMES | |
18160b98 | 23 | #include <../src/config.h> |
4e23f2ba | 24 | #undef signal |
46cec291 | 25 | |
8f9aaa0a RS |
26 | #include <stdio.h> |
27 | #include <getopt.h> | |
79f13bba DL |
28 | #ifdef HAVE_UNISTD_H |
29 | #include <unistd.h> | |
30 | #endif | |
8f9aaa0a | 31 | |
9f637eea GM |
32 | #ifdef VMS |
33 | # include "vms-pwd.h" | |
34 | #else | |
35 | # include <pwd.h> | |
36 | #endif /* not VMS */ | |
37 | ||
8f9aaa0a RS |
38 | char *getenv (), *getwd (); |
39 | char *getcwd (); | |
8f9aaa0a RS |
40 | |
41 | /* This is defined with -D from the compilation command, | |
42 | which extracts it from ../lisp/version.el. */ | |
43 | ||
44 | #ifndef VERSION | |
45 | #define VERSION "unspecified" | |
46 | #endif | |
47 | \f | |
48 | /* Name used to invoke this program. */ | |
49 | char *progname; | |
50 | ||
749ae770 | 51 | /* Nonzero means don't wait for a response from Emacs. --no-wait. */ |
8f9aaa0a RS |
52 | int nowait = 0; |
53 | ||
7f3bff3e AS |
54 | void print_help_and_exit (); |
55 | ||
8f9aaa0a RS |
56 | struct option longopts[] = |
57 | { | |
749ae770 | 58 | { "no-wait", no_argument, NULL, 'n' }, |
8f9aaa0a RS |
59 | { "help", no_argument, NULL, 'H' }, |
60 | { "version", no_argument, NULL, 'V' }, | |
97e3214d | 61 | { "alternate-editor",required_argument, NULL, 'a' }, |
8f9aaa0a RS |
62 | { 0 } |
63 | }; | |
64 | ||
97e3214d GM |
65 | |
66 | const char * alternate_editor = NULL; | |
67 | ||
8f9aaa0a | 68 | /* Decode the options from argv and argc. |
5212210c | 69 | The global variable `optind' will say how many arguments we used up. */ |
8f9aaa0a | 70 | |
5212210c | 71 | void |
8f9aaa0a RS |
72 | decode_options (argc, argv) |
73 | int argc; | |
74 | char **argv; | |
75 | { | |
76 | while (1) | |
77 | { | |
78 | int opt = getopt_long (argc, argv, | |
97e3214d | 79 | "VHna:", longopts, 0); |
8f9aaa0a RS |
80 | |
81 | if (opt == EOF) | |
82 | break; | |
83 | ||
97e3214d GM |
84 | alternate_editor = getenv ("ALTERNATE_EDITOR"); |
85 | ||
8f9aaa0a RS |
86 | switch (opt) |
87 | { | |
88 | case 0: | |
89 | /* If getopt returns 0, then it has already processed a | |
90 | long-named option. We should do nothing. */ | |
91 | break; | |
97e3214d GM |
92 | |
93 | case 'a': | |
94 | alternate_editor = optarg; | |
95 | break; | |
96 | ||
8f9aaa0a RS |
97 | case 'n': |
98 | nowait = 1; | |
99 | break; | |
100 | ||
101 | case 'V': | |
b4e94f42 | 102 | fprintf (stderr, "emacsclient %s\n", VERSION); |
8f9aaa0a RS |
103 | exit (1); |
104 | break; | |
46cec291 | 105 | |
8f9aaa0a RS |
106 | case 'H': |
107 | default: | |
108 | print_help_and_exit (); | |
109 | } | |
110 | } | |
8f9aaa0a RS |
111 | } |
112 | ||
7f3bff3e | 113 | void |
8f9aaa0a RS |
114 | print_help_and_exit () |
115 | { | |
116 | fprintf (stderr, | |
97e3214d | 117 | "Usage: %s [-a ALTERNATE-EDITOR] [-n] [--no-wait] [+LINENUMBER] FILENAME\n", |
8f9aaa0a | 118 | progname); |
4852ed0e RS |
119 | fprintf (stderr, |
120 | "Or %s --version\n", | |
121 | progname); | |
8f9aaa0a | 122 | fprintf (stderr, |
b4e94f42 | 123 | "Report bugs to bug-gnu-emacs@gnu.org.\n"); |
8f9aaa0a RS |
124 | exit (1); |
125 | } | |
5212210c | 126 | |
f1db6a73 RS |
127 | /* Return a copy of NAME, inserting a & |
128 | before each &, each space, and any initial -. | |
5212210c RS |
129 | Change spaces to underscores, too, so that the |
130 | return value never contains a space. */ | |
131 | ||
132 | char * | |
133 | quote_file_name (name) | |
134 | char *name; | |
135 | { | |
136 | char *copy = (char *) malloc (strlen (name) * 2 + 1); | |
137 | char *p, *q; | |
138 | ||
139 | p = name; | |
140 | q = copy; | |
141 | while (*p) | |
142 | { | |
143 | if (*p == ' ') | |
144 | { | |
f1db6a73 | 145 | *q++ = '&'; |
5212210c RS |
146 | *q++ = '_'; |
147 | p++; | |
148 | } | |
149 | else | |
150 | { | |
f1db6a73 RS |
151 | if (*p == '&' || (*p == '-' && p == name)) |
152 | *q++ = '&'; | |
5212210c RS |
153 | *q++ = *p++; |
154 | } | |
155 | } | |
f1db6a73 | 156 | *q++ = 0; |
5212210c | 157 | |
97e3214d | 158 | |
5212210c RS |
159 | return copy; |
160 | } | |
0c76956f | 161 | |
0c76956f RS |
162 | /* Like malloc but get fatal error if memory is exhausted. */ |
163 | ||
5497dfdb | 164 | long * |
0c76956f RS |
165 | xmalloc (size) |
166 | unsigned int size; | |
167 | { | |
5f32a712 | 168 | long *result = (long *) malloc (size); |
0c76956f RS |
169 | if (result == NULL) |
170 | { | |
171 | perror ("malloc"); | |
172 | exit (1); | |
173 | } | |
174 | return result; | |
175 | } | |
8f9aaa0a | 176 | \f |
97e3214d GM |
177 | /* |
178 | Try to run a different command, or --if no alternate editor is | |
179 | defined-- exit with an errorcode. | |
180 | */ | |
181 | fail (argc, argv) | |
182 | int argc; | |
183 | char **argv; | |
184 | { | |
185 | if (alternate_editor) | |
186 | { | |
187 | int i = optind -1 ; | |
188 | execvp (alternate_editor, argv + i); | |
189 | } | |
190 | else | |
191 | { | |
192 | exit (1); | |
193 | } | |
194 | } | |
195 | ||
196 | ||
197 | ||
198 | \f | |
b135a7cf | 199 | #if !defined (HAVE_SOCKETS) && !defined (HAVE_SYSVIPC) |
46cec291 RS |
200 | |
201 | main (argc, argv) | |
202 | int argc; | |
203 | char **argv; | |
204 | { | |
205 | fprintf (stderr, "%s: Sorry, the Emacs server is supported only\n", | |
206 | argv[0]); | |
207 | fprintf (stderr, "on systems with Berkeley sockets or System V IPC.\n"); | |
97e3214d GM |
208 | |
209 | fail (argc, argv); | |
46cec291 RS |
210 | } |
211 | ||
212 | #else /* HAVE_SOCKETS or HAVE_SYSVIPC */ | |
213 | ||
1e523e3d | 214 | #if defined (HAVE_SOCKETS) && ! defined (NO_SOCKETS_IN_FILE_SYSTEM) |
46cec291 RS |
215 | /* BSD code is very different from SYSV IPC code */ |
216 | ||
217 | #include <sys/types.h> | |
218 | #include <sys/socket.h> | |
219 | #include <sys/un.h> | |
efb859b4 | 220 | #include <sys/stat.h> |
46cec291 RS |
221 | #include <errno.h> |
222 | ||
92af894f | 223 | extern char *strerror (); |
46cec291 RS |
224 | extern int errno; |
225 | ||
9f637eea GM |
226 | /* Three possibilities: |
227 | 2 - can't be `stat'ed (sets errno) | |
228 | 1 - isn't owned by us | |
229 | 0 - success: none of the above */ | |
230 | ||
231 | static int | |
232 | socket_status (socket_name) | |
233 | char *socket_name; | |
234 | { | |
235 | struct stat statbfr; | |
236 | ||
237 | if (stat (socket_name, &statbfr) == -1) | |
238 | return 2; | |
239 | ||
240 | if (statbfr.st_uid != geteuid ()) | |
241 | return 1; | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
340ff9de | 246 | int |
46cec291 RS |
247 | main (argc, argv) |
248 | int argc; | |
249 | char **argv; | |
250 | { | |
a2b3f2b5 RS |
251 | char *system_name; |
252 | int system_name_length; | |
46cec291 | 253 | int s, i; |
23a7488d | 254 | FILE *out, *in; |
46cec291 | 255 | struct sockaddr_un server; |
571512de EZ |
256 | #ifdef SERVER_HOME_DIR |
257 | char *homedir; | |
258 | #endif | |
259 | char *cwd, *str; | |
46cec291 | 260 | char string[BUFSIZ]; |
8f9aaa0a RS |
261 | |
262 | progname = argv[0]; | |
46cec291 | 263 | |
8f9aaa0a | 264 | /* Process options. */ |
5212210c | 265 | decode_options (argc, argv); |
46cec291 | 266 | |
5212210c | 267 | if (argc - optind < 1) |
8f9aaa0a | 268 | print_help_and_exit (); |
46cec291 RS |
269 | |
270 | /* | |
271 | * Open up an AF_UNIX socket in this person's home directory | |
272 | */ | |
273 | ||
274 | if ((s = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) | |
275 | { | |
276 | fprintf (stderr, "%s: ", argv[0]); | |
277 | perror ("socket"); | |
97e3214d | 278 | fail (argc, argv); |
46cec291 | 279 | } |
97e3214d | 280 | |
46cec291 | 281 | server.sun_family = AF_UNIX; |
c5fee545 | 282 | |
efb859b4 | 283 | { |
a2b3f2b5 RS |
284 | system_name_length = 32; |
285 | ||
286 | while (1) | |
287 | { | |
288 | system_name = (char *) xmalloc (system_name_length + 1); | |
289 | ||
290 | /* system_name must be null-terminated string. */ | |
291 | system_name[system_name_length] = '\0'; | |
292 | ||
293 | if (gethostname (system_name, system_name_length) == 0) | |
294 | break; | |
295 | ||
296 | free (system_name); | |
297 | system_name_length *= 2; | |
298 | } | |
c5fee545 KH |
299 | } |
300 | ||
301 | #ifndef SERVER_HOME_DIR | |
302 | { | |
9f637eea | 303 | int sock_status = 0; |
efb859b4 | 304 | |
efb859b4 JB |
305 | sprintf (server.sun_path, "/tmp/esrv%d-%s", geteuid (), system_name); |
306 | ||
9f637eea GM |
307 | /* See if the socket exists, and if it's owned by us. */ |
308 | sock_status = socket_status (server.sun_path); | |
309 | if (sock_status) | |
efb859b4 | 310 | { |
9f637eea GM |
311 | /* Failing that, see if LOGNAME or USER exist and differ from |
312 | our euid. If so, look for a socket based on the UID | |
313 | associated with the name. This is reminiscent of the logic | |
314 | that init_editfns uses to set the global Vuser_full_name. */ | |
315 | ||
316 | char *user_name = (char *) getenv ("LOGNAME"); | |
317 | if (!user_name) | |
318 | user_name = (char *) getenv ("USER"); | |
319 | ||
320 | if (user_name) | |
321 | { | |
322 | struct passwd *pw = getpwnam (user_name); | |
323 | if (pw && (pw->pw_uid != geteuid ())) | |
324 | { | |
325 | /* We're running under su, apparently. */ | |
326 | sprintf (server.sun_path, "/tmp/esrv%d-%s", | |
327 | pw->pw_uid, system_name); | |
328 | sock_status = socket_status (server.sun_path); | |
329 | } | |
330 | } | |
efb859b4 | 331 | } |
9f637eea GM |
332 | |
333 | switch (sock_status) | |
334 | { | |
335 | case 1: | |
336 | /* There's a socket, but it isn't owned by us. This is OK if | |
337 | we are root. */ | |
338 | if (0 != geteuid ()) | |
339 | { | |
340 | fprintf (stderr, "%s: Invalid socket owner\n", argv[0]); | |
341 | fail (argc, argv); | |
342 | } | |
343 | break; | |
344 | ||
345 | case 2: | |
346 | /* `stat' failed */ | |
347 | if (errno == ENOENT) | |
348 | fprintf (stderr, | |
349 | "%s: can't find socket; have you started the server?\n", | |
350 | argv[0]); | |
351 | else | |
352 | fprintf (stderr, "%s: can't stat %s: %s\n", | |
353 | argv[0], server.sun_path, strerror (errno)); | |
354 | fail (argc, argv); | |
355 | break; | |
356 | } | |
efb859b4 | 357 | } |
46cec291 RS |
358 | #else |
359 | if ((homedir = getenv ("HOME")) == NULL) | |
360 | { | |
361 | fprintf (stderr, "%s: No home directory\n", argv[0]); | |
97e3214d | 362 | fail (argc, argv); |
46cec291 RS |
363 | } |
364 | strcpy (server.sun_path, homedir); | |
b135a7cf | 365 | strcat (server.sun_path, "/.emacs-server-"); |
b135a7cf | 366 | strcat (server.sun_path, system_name); |
46cec291 RS |
367 | #endif |
368 | ||
4e23f2ba JB |
369 | if (connect (s, (struct sockaddr *) &server, strlen (server.sun_path) + 2) |
370 | < 0) | |
46cec291 RS |
371 | { |
372 | fprintf (stderr, "%s: ", argv[0]); | |
373 | perror ("connect"); | |
97e3214d | 374 | fail (argc, argv); |
46cec291 | 375 | } |
23a7488d RS |
376 | |
377 | /* We use the stream OUT to send our command to the server. */ | |
46cec291 RS |
378 | if ((out = fdopen (s, "r+")) == NULL) |
379 | { | |
380 | fprintf (stderr, "%s: ", argv[0]); | |
381 | perror ("fdopen"); | |
97e3214d | 382 | fail (argc, argv); |
46cec291 RS |
383 | } |
384 | ||
23a7488d RS |
385 | /* We use the stream IN to read the response. |
386 | We used to use just one stream for both output and input | |
387 | on the socket, but reversing direction works nonportably: | |
388 | on some systems, the output appears as the first input; | |
389 | on other systems it does not. */ | |
390 | if ((in = fdopen (s, "r+")) == NULL) | |
391 | { | |
392 | fprintf (stderr, "%s: ", argv[0]); | |
393 | perror ("fdopen"); | |
97e3214d | 394 | fail (argc, argv); |
23a7488d RS |
395 | } |
396 | ||
e397a017 | 397 | #ifdef BSD_SYSTEM |
46cec291 | 398 | cwd = getwd (string); |
ee6a193c RS |
399 | #else |
400 | cwd = getcwd (string, sizeof string); | |
401 | #endif | |
46cec291 RS |
402 | if (cwd == 0) |
403 | { | |
404 | /* getwd puts message in STRING if it fails. */ | |
bd252662 RS |
405 | fprintf (stderr, "%s: %s (%s)\n", argv[0], |
406 | #ifdef BSD_SYSTEM | |
407 | string, | |
408 | #else | |
409 | "Cannot get current working directory", | |
410 | #endif | |
411 | strerror (errno)); | |
97e3214d | 412 | fail (argc, argv); |
46cec291 RS |
413 | } |
414 | ||
5212210c RS |
415 | if (nowait) |
416 | fprintf (out, "-nowait "); | |
292d74a3 | 417 | |
5212210c RS |
418 | for (i = optind; i < argc; i++) |
419 | { | |
46cec291 RS |
420 | if (*argv[i] == '+') |
421 | { | |
422 | char *p = argv[i] + 1; | |
423 | while (*p >= '0' && *p <= '9') p++; | |
424 | if (*p != 0) | |
0343a017 | 425 | fprintf (out, "%s/", quote_file_name (cwd)); |
46cec291 RS |
426 | } |
427 | else if (*argv[i] != '/') | |
0343a017 | 428 | fprintf (out, "%s/", quote_file_name (cwd)); |
5212210c RS |
429 | |
430 | fprintf (out, "%s ", quote_file_name (argv[i])); | |
46cec291 RS |
431 | } |
432 | fprintf (out, "\n"); | |
433 | fflush (out); | |
434 | ||
292d74a3 RS |
435 | /* Maybe wait for an answer. */ |
436 | if (nowait) | |
437 | return 0; | |
438 | ||
46cec291 RS |
439 | printf ("Waiting for Emacs..."); |
440 | fflush (stdout); | |
441 | ||
23a7488d RS |
442 | /* Now, wait for an answer and print any messages. On some systems, |
443 | the first line we read will actually be the output we just sent. | |
444 | We can't predict whether that will happen, so if it does, we | |
445 | detect it by recognizing `Client: ' at the beginning. */ | |
46cec291 | 446 | |
23a7488d | 447 | while (str = fgets (string, BUFSIZ, in)) |
46cec291 | 448 | printf ("%s", str); |
23a7488d | 449 | |
340ff9de | 450 | return 0; |
46cec291 RS |
451 | } |
452 | ||
453 | #else /* This is the SYSV IPC section */ | |
454 | ||
455 | #include <sys/types.h> | |
456 | #include <sys/ipc.h> | |
457 | #include <sys/msg.h> | |
b135a7cf | 458 | #include <sys/utsname.h> |
46cec291 | 459 | #include <stdio.h> |
bd252662 RS |
460 | #include <errno.h> |
461 | extern int errno; | |
46cec291 | 462 | |
1518a9eb | 463 | char *getwd (), *getcwd (), *getenv (); |
b135a7cf | 464 | struct utsname system_name; |
1518a9eb | 465 | |
46cec291 RS |
466 | main (argc, argv) |
467 | int argc; | |
468 | char **argv; | |
469 | { | |
470 | int s; | |
471 | key_t key; | |
1518a9eb RS |
472 | /* Size of text allocated in MSGP. */ |
473 | int size_allocated = BUFSIZ; | |
474 | /* Amount of text used in MSGP. */ | |
475 | int used; | |
476 | struct msgbuf *msgp | |
477 | = (struct msgbuf *) malloc (sizeof (struct msgbuf) + size_allocated); | |
46cec291 RS |
478 | struct msqid_ds * msg_st; |
479 | char *homedir, buf[BUFSIZ]; | |
480 | char gwdirb[BUFSIZ]; | |
481 | char *cwd; | |
482 | char *temp; | |
8f9aaa0a RS |
483 | |
484 | progname = argv[0]; | |
485 | ||
486 | /* Process options. */ | |
5212210c | 487 | decode_options (argc, argv); |
46cec291 | 488 | |
5212210c | 489 | if (argc - optind < 1) |
8f9aaa0a | 490 | print_help_and_exit (); |
46cec291 RS |
491 | |
492 | /* | |
b135a7cf | 493 | * Create a message queue using ~/.emacs-server as the path for ftok |
46cec291 RS |
494 | */ |
495 | if ((homedir = getenv ("HOME")) == NULL) | |
496 | { | |
497 | fprintf (stderr, "%s: No home directory\n", argv[0]); | |
498 | exit (1); | |
499 | } | |
500 | strcpy (buf, homedir); | |
b135a7cf RS |
501 | #ifndef HAVE_LONG_FILE_NAMES |
502 | /* If file names are short, we can't fit the host name. */ | |
503 | strcat (buf, "/.emacs-server"); | |
504 | #else | |
505 | strcat (buf, "/.emacs-server-"); | |
506 | uname (&system_name); | |
507 | strcat (buf, system_name.nodename); | |
508 | #endif | |
46cec291 RS |
509 | creat (buf, 0600); |
510 | key = ftok (buf, 1); /* unlikely to be anyone else using it */ | |
61a93162 | 511 | s = msgget (key, 0600 | IPC_CREAT); |
46cec291 RS |
512 | if (s == -1) |
513 | { | |
514 | fprintf (stderr, "%s: ", argv[0]); | |
515 | perror ("msgget"); | |
516 | exit (1); | |
517 | } | |
518 | ||
519 | /* Determine working dir, so we can prefix it to all the arguments. */ | |
e397a017 | 520 | #ifdef BSD_SYSTEM |
46cec291 RS |
521 | temp = getwd (gwdirb); |
522 | #else | |
523 | temp = getcwd (gwdirb, sizeof gwdirb); | |
524 | #endif | |
525 | ||
526 | cwd = gwdirb; | |
527 | if (temp != 0) | |
528 | { | |
529 | /* On some systems, cwd can look like `@machine/...'; | |
530 | ignore everything before the first slash in such a case. */ | |
531 | while (*cwd && *cwd != '/') | |
532 | cwd++; | |
533 | strcat (cwd, "/"); | |
534 | } | |
535 | else | |
536 | { | |
bd252662 | 537 | #ifdef BSD_SYSTEM |
26396b1b | 538 | fprintf (stderr, "%s: %s\n", argv[0], cwd); |
bd252662 RS |
539 | #else |
540 | fprintf (stderr, "%s: Cannot get current working directory: %s\n", | |
541 | argv[0], strerror (errno)); | |
542 | #endif | |
97e3214d | 543 | fail (argc, argv); |
46cec291 RS |
544 | } |
545 | ||
546 | msgp->mtext[0] = 0; | |
1518a9eb | 547 | used = 0; |
5212210c RS |
548 | |
549 | if (nowait) | |
550 | { | |
551 | strcat (msgp->mtext, "-nowait "); | |
552 | used += 8; | |
553 | } | |
554 | ||
555 | argc -= optind; | |
556 | argv += optind; | |
557 | ||
46cec291 RS |
558 | while (argc) |
559 | { | |
1518a9eb | 560 | int need_cwd = 0; |
cd33a5a0 | 561 | char *modified_arg = argv[0]; |
292d74a3 | 562 | |
5212210c | 563 | if (*modified_arg == '+') |
46cec291 | 564 | { |
cd33a5a0 | 565 | char *p = modified_arg + 1; |
46cec291 RS |
566 | while (*p >= '0' && *p <= '9') p++; |
567 | if (*p != 0) | |
1518a9eb | 568 | need_cwd = 1; |
46cec291 | 569 | } |
cd33a5a0 | 570 | else if (*modified_arg != '/') |
1518a9eb RS |
571 | need_cwd = 1; |
572 | ||
5212210c RS |
573 | modified_arg = quote_file_name (modified_arg); |
574 | ||
1518a9eb | 575 | if (need_cwd) |
0343a017 KH |
576 | /* Overestimate in case we have to quote something in CWD. */ |
577 | used += 2 * strlen (cwd); | |
cd33a5a0 | 578 | used += strlen (modified_arg) + 1; |
1518a9eb RS |
579 | while (used + 2 > size_allocated) |
580 | { | |
581 | size_allocated *= 2; | |
582 | msgp = (struct msgbuf *) realloc (msgp, | |
583 | (sizeof (struct msgbuf) | |
584 | + size_allocated)); | |
585 | } | |
586 | ||
587 | if (need_cwd) | |
0343a017 | 588 | strcat (msgp->mtext, quote_file_name (cwd)); |
46cec291 | 589 | |
cd33a5a0 | 590 | strcat (msgp->mtext, modified_arg); |
46cec291 RS |
591 | strcat (msgp->mtext, " "); |
592 | argv++; argc--; | |
593 | } | |
594 | strcat (msgp->mtext, "\n"); | |
1518a9eb RS |
595 | #ifdef HPUX /* HPUX has a bug. */ |
596 | if (strlen (msgp->mtext) >= 512) | |
597 | { | |
18a2fa91 | 598 | fprintf (stderr, "%s: args too long for msgsnd\n", progname); |
97e3214d | 599 | fail (argc, argv); |
1518a9eb RS |
600 | } |
601 | #endif | |
46cec291 RS |
602 | msgp->mtype = 1; |
603 | if (msgsnd (s, msgp, strlen (msgp->mtext)+1, 0) < 0) | |
604 | { | |
defb80d7 | 605 | fprintf (stderr, "%s: ", progname); |
46cec291 | 606 | perror ("msgsnd"); |
97e3214d | 607 | fail (argc, argv); |
46cec291 | 608 | } |
292d74a3 RS |
609 | |
610 | /* Maybe wait for an answer. */ | |
611 | if (nowait) | |
612 | return 0; | |
613 | ||
46cec291 RS |
614 | printf ("Waiting for Emacs..."); |
615 | fflush (stdout); | |
616 | ||
617 | msgrcv (s, msgp, BUFSIZ, getpid (), 0); /* wait for anything back */ | |
618 | strcpy (buf, msgp->mtext); | |
619 | ||
dc3c30fe KH |
620 | printf ("\n"); |
621 | if (*buf) | |
622 | printf ("%s\n", buf); | |
46cec291 RS |
623 | exit (0); |
624 | } | |
625 | ||
626 | #endif /* HAVE_SYSVIPC */ | |
627 | ||
628 | #endif /* HAVE_SOCKETS or HAVE_SYSVIPC */ | |
27711600 RM |
629 | \f |
630 | #ifndef HAVE_STRERROR | |
631 | char * | |
632 | strerror (errnum) | |
633 | int errnum; | |
634 | { | |
635 | extern char *sys_errlist[]; | |
636 | extern int sys_nerr; | |
637 | ||
638 | if (errnum >= 0 && errnum < sys_nerr) | |
639 | return sys_errlist[errnum]; | |
640 | return (char *) "Unknown error"; | |
641 | } | |
642 | ||
643 | #endif /* ! HAVE_STRERROR */ |