Commit | Line | Data |
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d953f306 | 1 | /* Communication subprocess for GNU Emacs acting as server. |
4ee9629e | 2 | Copyright (C) 1986, 1987, 1992, 1994, 1999 Free Software Foundation, Inc. |
d953f306 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 | |
d4327fec | 8 | the Free Software Foundation; either version 2, or (at your option) |
d953f306 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. */ | |
d953f306 RS |
20 | |
21 | ||
22 | /* The GNU Emacs edit server process is run as a subprocess of Emacs | |
23 | under control of the file lisp/server.el. | |
24 | This program accepts communication from client (program emacsclient.c) | |
25 | and passes their commands (consisting of keyboard characters) | |
26 | up to the Emacs which then executes them. */ | |
27 | ||
28 | #define NO_SHORTNAMES | |
b8509940 PJ |
29 | |
30 | #ifdef HAVE_CONFIG_H | |
2f8fe2f4 | 31 | #include <config.h> |
b8509940 PJ |
32 | #endif |
33 | ||
4ee9629e | 34 | #include <signal.h> |
5ed8e09c | 35 | #undef signal |
d953f306 | 36 | |
021eac48 | 37 | #if !defined (HAVE_SOCKETS) && !defined (HAVE_SYSVIPC) |
d953f306 RS |
38 | #include <stdio.h> |
39 | ||
4e7ef1d6 | 40 | int |
d953f306 RS |
41 | main () |
42 | { | |
43 | fprintf (stderr, "Sorry, the Emacs server is supported only on systems\n"); | |
44 | fprintf (stderr, "with Berkeley sockets or System V IPC.\n"); | |
45 | exit (1); | |
46 | } | |
47 | ||
48 | #else /* HAVE_SOCKETS or HAVE_SYSVIPC */ | |
49 | ||
4e7ef1d6 AS |
50 | void perror_1 (); |
51 | void fatal_error (); | |
52 | ||
1e523e3d | 53 | #if defined (HAVE_SOCKETS) && ! defined (NO_SOCKETS_IN_FILE_SYSTEM) |
d953f306 RS |
54 | /* BSD code is very different from SYSV IPC code */ |
55 | ||
d953f306 | 56 | #include <sys/types.h> |
908d6b87 | 57 | #include <sys/file.h> |
d953f306 | 58 | #include <sys/socket.h> |
d953f306 RS |
59 | #include <sys/un.h> |
60 | #include <stdio.h> | |
61 | #include <errno.h> | |
cbf5f47c | 62 | #include <sys/stat.h> |
d953f306 | 63 | |
4e7ef1d6 AS |
64 | #ifdef HAVE_UNISTD_H |
65 | #include <unistd.h> | |
66 | #endif | |
67 | ||
1ee65e5c | 68 | #ifndef errno |
d953f306 | 69 | extern int errno; |
1ee65e5c | 70 | #endif |
d953f306 | 71 | |
b38bab94 KH |
72 | /* Copied from src/process.c */ |
73 | #ifdef FD_SET | |
74 | /* We could get this from param.h, but better not to depend on finding that. | |
75 | And better not to risk that it might define other symbols used in this | |
76 | file. */ | |
77 | #ifdef FD_SETSIZE | |
78 | #define MAXDESC FD_SETSIZE | |
79 | #else | |
80 | #define MAXDESC 64 | |
81 | #endif | |
82 | #define SELECT_TYPE fd_set | |
83 | #else /* no FD_SET */ | |
84 | #define MAXDESC 32 | |
85 | #define SELECT_TYPE int | |
86 | ||
87 | /* Define the macros to access a single-int bitmap of descriptors. */ | |
88 | #define FD_SET(n, p) (*(p) |= (1 << (n))) | |
89 | #define FD_CLR(n, p) (*(p) &= ~(1 << (n))) | |
90 | #define FD_ISSET(n, p) (*(p) & (1 << (n))) | |
91 | #define FD_ZERO(p) (*(p) = 0) | |
92 | #endif /* no FD_SET */ | |
93 | ||
d8888efa RS |
94 | /* This is the file name of the socket that we made. */ |
95 | ||
96 | char *socket_name; | |
97 | ||
98 | /* Name of this program. */ | |
99 | ||
100 | char *progname; | |
101 | \f | |
102 | /* Handle fatal signals. */ | |
103 | ||
104 | /* This is the handler. */ | |
105 | ||
106 | SIGTYPE | |
107 | delete_socket (sig) | |
108 | int sig; | |
109 | { | |
110 | signal (sig, SIG_DFL); | |
111 | unlink (socket_name); | |
112 | kill (getpid (), sig); | |
113 | } | |
114 | ||
115 | /* Set up to handle all the signals. */ | |
116 | ||
4e7ef1d6 | 117 | void |
d8888efa RS |
118 | handle_signals () |
119 | { | |
120 | signal (SIGHUP, delete_socket); | |
121 | signal (SIGINT, delete_socket); | |
122 | signal (SIGQUIT, delete_socket); | |
123 | signal (SIGILL, delete_socket); | |
124 | signal (SIGTRAP, delete_socket); | |
125 | #ifdef SIGABRT | |
126 | signal (SIGABRT, delete_socket); | |
127 | #endif | |
128 | #ifdef SIGHWE | |
129 | signal (SIGHWE, delete_socket); | |
130 | #endif | |
131 | #ifdef SIGPRE | |
132 | signal (SIGPRE, delete_socket); | |
133 | #endif | |
134 | #ifdef SIGORE | |
135 | signal (SIGORE, delete_socket); | |
136 | #endif | |
137 | #ifdef SIGUME | |
138 | signal (SIGUME, delete_socket); | |
139 | #endif | |
140 | #ifdef SIGDLK | |
141 | signal (SIGDLK, delete_socket); | |
142 | #endif | |
143 | #ifdef SIGCPULIM | |
144 | signal (SIGCPULIM, delete_socket); | |
145 | #endif | |
146 | #ifdef SIGIOT | |
147 | /* This is missing on some systems - OS/2, for example. */ | |
148 | signal (SIGIOT, delete_socket); | |
149 | #endif | |
150 | #ifdef SIGEMT | |
151 | signal (SIGEMT, delete_socket); | |
152 | #endif | |
153 | signal (SIGFPE, delete_socket); | |
154 | #ifdef SIGBUS | |
155 | signal (SIGBUS, delete_socket); | |
156 | #endif | |
157 | signal (SIGSEGV, delete_socket); | |
158 | #ifdef SIGSYS | |
159 | signal (SIGSYS, delete_socket); | |
160 | #endif | |
161 | signal (SIGTERM, delete_socket); | |
162 | #ifdef SIGXCPU | |
163 | signal (SIGXCPU, delete_socket); | |
164 | #endif | |
165 | #ifdef SIGXFSZ | |
166 | signal (SIGXFSZ, delete_socket); | |
167 | #endif /* SIGXFSZ */ | |
168 | ||
169 | #ifdef AIX | |
170 | /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */ | |
171 | signal (SIGXCPU, delete_socket); | |
172 | #ifndef _I386 | |
173 | signal (SIGIOINT, delete_socket); | |
174 | #endif | |
175 | signal (SIGGRANT, delete_socket); | |
176 | signal (SIGRETRACT, delete_socket); | |
177 | signal (SIGSOUND, delete_socket); | |
178 | signal (SIGMSG, delete_socket); | |
179 | #endif /* AIX */ | |
180 | } | |
181 | \f | |
182 | /* Print error message. `s1' is printf control string, `s2' is arg for it. */ | |
183 | void | |
184 | error (s1, s2) | |
185 | char *s1, *s2; | |
186 | { | |
187 | fprintf (stderr, "%s: ", progname); | |
188 | fprintf (stderr, s1, s2); | |
189 | fprintf (stderr, "\n"); | |
190 | } | |
191 | ||
192 | /* Print error message and exit. */ | |
193 | void | |
194 | fatal (s1, s2) | |
195 | char *s1, *s2; | |
196 | { | |
197 | error (s1, s2); | |
198 | exit (1); | |
199 | } | |
200 | ||
201 | /* Like malloc but get fatal error if memory is exhausted. */ | |
202 | ||
203 | long * | |
204 | xmalloc (size) | |
205 | unsigned int size; | |
206 | { | |
207 | long *result = (long *) malloc (size); | |
208 | if (result == NULL) | |
209 | fatal ("virtual memory exhausted", 0); | |
210 | return result; | |
211 | } | |
212 | \f | |
c275f129 | 213 | int |
d8888efa RS |
214 | main (argc, argv) |
215 | int argc; | |
216 | char **argv; | |
d953f306 | 217 | { |
40beb971 RS |
218 | char *system_name; |
219 | int system_name_length; | |
4893a437 | 220 | int s, infd; |
57b1f720 RS |
221 | #ifdef SOCKLEN_TYPE |
222 | SOCKLEN_TYPE fromlen; | |
223 | #else | |
4893a437 | 224 | size_t fromlen; |
57b1f720 | 225 | #endif |
4893a437 | 226 | struct sockaddr_un server, fromunix; |
317ad01e | 227 | #ifdef SERVER_HOME_DIR |
d953f306 | 228 | char *homedir; |
317ad01e | 229 | #endif |
d953f306 RS |
230 | char *str, string[BUFSIZ], code[BUFSIZ]; |
231 | FILE *infile; | |
232 | FILE **openfiles; | |
233 | int openfiles_size; | |
cbf5f47c | 234 | struct stat statbuf; |
d953f306 | 235 | |
f662f9b0 | 236 | #ifndef convex |
d953f306 | 237 | char *getenv (); |
f662f9b0 | 238 | #endif |
d953f306 | 239 | |
d8888efa RS |
240 | progname = argv[0]; |
241 | ||
d953f306 RS |
242 | openfiles_size = 20; |
243 | openfiles = (FILE **) malloc (openfiles_size * sizeof (FILE *)); | |
244 | if (openfiles == 0) | |
245 | abort (); | |
246 | ||
b8509940 | 247 | /* |
d953f306 RS |
248 | * Open up an AF_UNIX socket in this person's home directory |
249 | */ | |
250 | ||
251 | if ((s = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) | |
252 | { | |
ccd318fb | 253 | perror_1 ("socket"); |
d953f306 RS |
254 | exit (1); |
255 | } | |
256 | server.sun_family = AF_UNIX; | |
40beb971 | 257 | |
c5fee545 | 258 | system_name_length = 32; |
40beb971 RS |
259 | while (1) |
260 | { | |
261 | system_name = (char *) xmalloc (system_name_length + 1); | |
262 | ||
263 | /* system_name must be null-terminated string. */ | |
264 | system_name[system_name_length] = '\0'; | |
265 | ||
266 | if (gethostname (system_name, system_name_length) == 0) | |
267 | break; | |
268 | ||
269 | free (system_name); | |
270 | system_name_length *= 2; | |
271 | } | |
272 | ||
c5fee545 | 273 | #ifndef SERVER_HOME_DIR |
c3d7eab2 | 274 | sprintf (server.sun_path, "/tmp/esrv%d-%s", (int) geteuid (), system_name); |
1464f5d5 JB |
275 | |
276 | if (unlink (server.sun_path) == -1 && errno != ENOENT) | |
277 | { | |
ccd318fb | 278 | perror_1 ("unlink"); |
1464f5d5 JB |
279 | exit (1); |
280 | } | |
b8509940 | 281 | #else |
1464f5d5 | 282 | if ((homedir = getenv ("HOME")) == NULL) |
ccd318fb RS |
283 | fatal_error ("No home directory\n"); |
284 | ||
d953f306 | 285 | strcpy (server.sun_path, homedir); |
021eac48 | 286 | strcat (server.sun_path, "/.emacs-server-"); |
021eac48 | 287 | strcat (server.sun_path, system_name); |
d953f306 RS |
288 | /* Delete anyone else's old server. */ |
289 | unlink (server.sun_path); | |
1464f5d5 JB |
290 | #endif |
291 | ||
d8888efa RS |
292 | /* Save the socket name so we can delete it. */ |
293 | socket_name = (char *) xmalloc (strlen (server.sun_path) + 1); | |
294 | strcpy (socket_name, server.sun_path); | |
295 | ||
296 | handle_signals (); | |
297 | ||
2fdfe079 | 298 | if (bind (s, (struct sockaddr *) &server, strlen (server.sun_path) + 2) < 0) |
d953f306 | 299 | { |
ccd318fb | 300 | perror_1 ("bind"); |
d953f306 RS |
301 | exit (1); |
302 | } | |
303 | /* Only this user can send commands to this Emacs. */ | |
cbf5f47c KH |
304 | if (stat (server.sun_path, &statbuf) < 0) |
305 | { | |
306 | perror_1 ("bind"); | |
307 | exit (1); | |
308 | } | |
309 | ||
310 | chmod (server.sun_path, statbuf.st_mode & 0600); | |
d953f306 RS |
311 | /* |
312 | * Now, just wait for everything to come in.. | |
313 | */ | |
314 | if (listen (s, 5) < 0) | |
315 | { | |
ccd318fb | 316 | perror_1 ("listen"); |
d953f306 RS |
317 | exit (1); |
318 | } | |
319 | ||
320 | /* Disable sigpipes in case luser kills client... */ | |
321 | signal (SIGPIPE, SIG_IGN); | |
322 | for (;;) | |
323 | { | |
b38bab94 | 324 | SELECT_TYPE rmask; |
86af296b RM |
325 | FD_ZERO (&rmask); |
326 | FD_SET (0, &rmask); | |
327 | FD_SET (s, &rmask); | |
b38bab94 | 328 | if (select (s + 1, &rmask, 0, 0, 0) < 0) |
ccd318fb | 329 | perror_1 ("select"); |
86af296b | 330 | if (FD_ISSET (s, &rmask)) /* client sends list of filenames */ |
d953f306 RS |
331 | { |
332 | fromlen = sizeof (fromunix); | |
333 | fromunix.sun_family = AF_UNIX; | |
b38bab94 | 334 | infd = accept (s, (struct sockaddr *) &fromunix, &fromlen); |
d953f306 RS |
335 | if (infd < 0) |
336 | { | |
337 | if (errno == EMFILE || errno == ENFILE) | |
ccd318fb | 338 | fprintf (stderr, "Error: too many clients.\n"); |
d953f306 | 339 | else |
ccd318fb | 340 | perror_1 ("accept"); |
d953f306 RS |
341 | continue; |
342 | } | |
343 | ||
344 | if (infd >= openfiles_size) | |
345 | { | |
346 | openfiles_size *= 2; | |
347 | openfiles = (FILE **) realloc (openfiles, | |
348 | openfiles_size * sizeof (FILE *)); | |
349 | if (openfiles == 0) | |
350 | abort (); | |
351 | } | |
352 | ||
353 | infile = fdopen (infd, "r+"); /* open stream */ | |
354 | if (infile == NULL) | |
355 | { | |
ccd318fb | 356 | fprintf (stderr, "Error: too many clients.\n"); |
d953f306 RS |
357 | write (infd, "Too many clients.\n", 18); |
358 | close (infd); /* Prevent descriptor leak.. */ | |
359 | continue; | |
360 | } | |
361 | str = fgets (string, BUFSIZ, infile); | |
362 | if (str == NULL) | |
363 | { | |
ccd318fb | 364 | perror_1 ("fgets"); |
d953f306 RS |
365 | close (infd); /* Prevent descriptor leak.. */ |
366 | continue; | |
367 | } | |
368 | openfiles[infd] = infile; | |
369 | printf ("Client: %d %s", infd, string); | |
370 | /* If what we read did not end in a newline, | |
371 | it means there is more. Keep reading from the socket | |
372 | and outputting to Emacs, until we get the newline. */ | |
373 | while (string[strlen (string) - 1] != '\n') | |
374 | { | |
375 | if (fgets (string, BUFSIZ, infile) == 0) | |
376 | break; | |
377 | printf ("%s", string); | |
378 | } | |
379 | fflush (stdout); | |
380 | fflush (infile); | |
381 | continue; | |
382 | } | |
86af296b | 383 | else if (FD_ISSET (0, &rmask)) /* emacs sends codeword, fd, and string message */ |
d953f306 RS |
384 | { |
385 | /* Read command codeword and fd */ | |
386 | clearerr (stdin); | |
387 | scanf ("%s %d%*c", code, &infd); | |
388 | if (ferror (stdin) || feof (stdin)) | |
ccd318fb | 389 | fatal_error ("server: error reading from standard input\n"); |
d953f306 RS |
390 | |
391 | /* Transfer text from Emacs to the client, up to a newline. */ | |
392 | infile = openfiles[infd]; | |
cbd1aee2 | 393 | rewind (infile); |
d953f306 RS |
394 | while (1) |
395 | { | |
396 | if (fgets (string, BUFSIZ, stdin) == 0) | |
397 | break; | |
398 | fprintf (infile, "%s", string); | |
399 | if (string[strlen (string) - 1] == '\n') | |
400 | break; | |
401 | } | |
402 | fflush (infile); | |
403 | ||
404 | /* If command is close, close connection to client. */ | |
b8509940 PJ |
405 | if (strncmp (code, "Close:", 6) == 0) |
406 | if (infd > 2) | |
d953f306 RS |
407 | { |
408 | fclose (infile); | |
409 | close (infd); | |
410 | } | |
411 | continue; | |
b8509940 | 412 | } |
d953f306 RS |
413 | } |
414 | } | |
415 | ||
416 | #else /* This is the SYSV IPC section */ | |
417 | ||
418 | #include <sys/types.h> | |
d953f306 RS |
419 | #include <sys/ipc.h> |
420 | #include <sys/msg.h> | |
421 | #include <setjmp.h> | |
b8a0f2d8 | 422 | #include <errno.h> |
021eac48 RS |
423 | #include <sys/utsname.h> |
424 | ||
425 | struct utsname system_name; | |
b8a0f2d8 RS |
426 | |
427 | #ifndef errno | |
428 | extern int errno; | |
429 | #endif | |
d953f306 RS |
430 | |
431 | jmp_buf msgenv; | |
432 | ||
d4327fec | 433 | SIGTYPE |
d953f306 RS |
434 | msgcatch () |
435 | { | |
436 | longjmp (msgenv, 1); | |
437 | } | |
438 | ||
439 | ||
440 | /* "THIS has to be fixed. Remember, stderr may not exist...-rlk." | |
441 | Incorrect. This program runs as an inferior of Emacs. | |
442 | Its stderr always exists--rms. */ | |
443 | #include <stdio.h> | |
444 | ||
4e7ef1d6 | 445 | int |
d953f306 RS |
446 | main () |
447 | { | |
2f317998 | 448 | int s, infd, fromlen, ioproc; |
d953f306 RS |
449 | key_t key; |
450 | struct msgbuf * msgp = | |
451 | (struct msgbuf *) malloc (sizeof *msgp + BUFSIZ); | |
452 | struct msqid_ds msg_st; | |
453 | int p; | |
454 | char *homedir, *getenv (); | |
455 | char string[BUFSIZ]; | |
456 | FILE *infile; | |
457 | ||
458 | /* | |
021eac48 | 459 | * Create a message queue using ~/.emacs-server as the path for ftok |
d953f306 RS |
460 | */ |
461 | if ((homedir = getenv ("HOME")) == NULL) | |
ccd318fb RS |
462 | fatal_error ("No home directory\n"); |
463 | ||
d953f306 | 464 | strcpy (string, homedir); |
021eac48 RS |
465 | #ifndef HAVE_LONG_FILE_NAMES |
466 | /* If file names are short, we can't fit the host name. */ | |
467 | strcat (string, "/.emacs-server"); | |
468 | #else | |
469 | strcat (string, "/.emacs-server-"); | |
470 | uname (&system_name); | |
471 | strcat (string, system_name.nodename); | |
472 | #endif | |
d953f306 RS |
473 | creat (string, 0600); |
474 | key = ftok (string, 1); /* unlikely to be anyone else using it */ | |
475 | s = msgget (key, 0600 | IPC_CREAT); | |
476 | if (s == -1) | |
477 | { | |
ccd318fb | 478 | perror_1 ("msgget"); |
d953f306 RS |
479 | exit (1); |
480 | } | |
481 | ||
482 | /* Fork so we can close connection even if parent dies */ | |
483 | p = fork (); | |
484 | if (setjmp (msgenv)) | |
485 | { | |
486 | msgctl (s, IPC_RMID, 0); | |
b8a0f2d8 RS |
487 | if (p > 0) |
488 | kill (p, SIGKILL); | |
d953f306 RS |
489 | exit (0); |
490 | } | |
491 | signal (SIGTERM, msgcatch); | |
492 | signal (SIGINT, msgcatch); | |
b8a0f2d8 | 493 | signal (SIGHUP, msgcatch); |
9e3891de | 494 | if (p > 0) |
d953f306 | 495 | { |
9e3891de RS |
496 | /* This is executed in the original process that did the fork above. */ |
497 | /* Get pid of Emacs itself. */ | |
d953f306 RS |
498 | p = getppid (); |
499 | setpgrp (); /* Gnu kills process group on exit */ | |
500 | while (1) | |
501 | { | |
9e3891de | 502 | /* Is Emacs still alive? */ |
d953f306 RS |
503 | if (kill (p, 0) < 0) |
504 | { | |
505 | msgctl (s, IPC_RMID, 0); | |
506 | exit (0); | |
507 | } | |
508 | sleep (10); | |
509 | } | |
510 | } | |
511 | ||
2f317998 RS |
512 | /* This is executed in the child made by forking above. |
513 | Call it c1. Make another process, ioproc. */ | |
514 | ||
515 | ioproc = fork (); | |
516 | if (ioproc == 0) | |
517 | { | |
518 | /* In process ioproc, wait for text from Emacs, | |
519 | and send it to the process c1. | |
520 | This way, c1 only has to wait for one source of input. */ | |
521 | while (fgets (msgp->mtext, BUFSIZ, stdin)) | |
522 | { | |
523 | msgp->mtype = 1; | |
524 | msgsnd (s, msgp, strlen (msgp->mtext) + 1, 0); | |
525 | } | |
526 | exit (1); | |
527 | } | |
528 | ||
529 | /* In the process c1, | |
530 | listen for messages from clients and pass them to Emacs. */ | |
d953f306 RS |
531 | while (1) |
532 | { | |
533 | if ((fromlen = msgrcv (s, msgp, BUFSIZ - 1, 1, 0)) < 0) | |
534 | { | |
b8a0f2d8 RS |
535 | #ifdef EINTR |
536 | if (errno == EINTR) | |
537 | continue; | |
538 | #endif | |
ccd318fb | 539 | perror_1 ("msgrcv"); |
1464f5d5 | 540 | exit (1); |
d953f306 RS |
541 | } |
542 | else | |
543 | { | |
544 | msgctl (s, IPC_STAT, &msg_st); | |
2f317998 RS |
545 | |
546 | /* Distinguish whether the message came from a client, or from | |
547 | ioproc. */ | |
548 | if (msg_st.msg_lspid == ioproc) | |
549 | { | |
550 | char code[BUFSIZ]; | |
551 | int inproc; | |
552 | ||
553 | /* Message from ioproc: tell a client we are done. */ | |
554 | msgp->mtext[strlen (msgp->mtext)-1] = 0; | |
555 | sscanf (msgp->mtext, "%s %d", code, &inproc); | |
556 | msgp->mtype = inproc; | |
557 | msgsnd (s, msgp, strlen (msgp->mtext) + 1, 0); | |
558 | continue; | |
559 | } | |
560 | ||
561 | /* This is a request from a client: copy to stdout | |
562 | so that Emacs will get it. Include msg_lspid | |
563 | so server.el can tell us where to send the reply. */ | |
d953f306 RS |
564 | strncpy (string, msgp->mtext, fromlen); |
565 | string[fromlen] = 0; /* make sure */ | |
566 | /* Newline is part of string.. */ | |
2f317998 | 567 | printf ("Client: %d %s", msg_st.msg_lspid, string); |
d953f306 | 568 | fflush (stdout); |
d953f306 RS |
569 | } |
570 | } | |
571 | } | |
572 | ||
573 | #endif /* HAVE_SYSVIPC */ | |
574 | ||
ccd318fb RS |
575 | \f |
576 | /* This is like perror but puts `Error: ' at the beginning. */ | |
577 | ||
4e7ef1d6 | 578 | void |
ccd318fb RS |
579 | perror_1 (string) |
580 | char *string; | |
581 | { | |
582 | char *copy = (char *) malloc (strlen (string) + 8); | |
583 | if (copy == 0) | |
584 | fatal_error ("Virtual memory exhausted"); | |
585 | ||
586 | strcpy (copy, "Error: "); | |
587 | strcat (copy, string); | |
588 | perror (copy); | |
589 | } | |
590 | ||
4e7ef1d6 | 591 | void |
ccd318fb RS |
592 | fatal_error (string) |
593 | char *string; | |
594 | { | |
595 | fprintf (stderr, "%s", "Error: "); | |
596 | fprintf (stderr, string); | |
597 | exit (1); | |
598 | } | |
bbe73f05 | 599 | #endif /* HAVE_SOCKETS or HAVE_SYSVIPC */ |