Commit | Line | Data |
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410c8acf | 1 | /* -*-c-*- |
2 | * | |
2d752320 | 3 | * $Id$ |
410c8acf | 4 | * |
5 | * Client for TrIPE | |
6 | * | |
7 | * (c) 2001 Straylight/Edgeware | |
8 | */ | |
9 | ||
10 | /*----- Licensing notice --------------------------------------------------* | |
11 | * | |
12 | * This file is part of Trivial IP Encryption (TrIPE). | |
13 | * | |
14 | * TrIPE is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * TrIPE is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with TrIPE; if not, write to the Free Software Foundation, | |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
27 | */ | |
28 | ||
410c8acf | 29 | /*----- Header files ------------------------------------------------------*/ |
30 | ||
73189848 | 31 | #include "config.h" |
32 | ||
410c8acf | 33 | #include <ctype.h> |
34 | #include <errno.h> | |
35 | #include <signal.h> | |
36 | #include <stdio.h> | |
37 | #include <stdlib.h> | |
38 | #include <string.h> | |
39 | #include <time.h> | |
40 | ||
41 | #include <sys/types.h> | |
42 | #include <sys/time.h> | |
43 | #include <unistd.h> | |
44 | #include <fcntl.h> | |
45 | #include <sys/wait.h> | |
46 | #include <syslog.h> | |
47 | ||
48 | #include <sys/socket.h> | |
49 | #include <sys/un.h> | |
50 | #include <arpa/inet.h> | |
51 | #include <netdb.h> | |
52 | ||
53 | #include <mLib/alloc.h> | |
54 | #include <mLib/darray.h> | |
55 | #include <mLib/dstr.h> | |
410c8acf | 56 | #include <mLib/mdwopt.h> |
57 | #include <mLib/quis.h> | |
58 | #include <mLib/report.h> | |
59 | #include <mLib/sel.h> | |
60 | #include <mLib/selbuf.h> | |
5f5150b1 | 61 | #include <mLib/sig.h> |
410c8acf | 62 | #include <mLib/str.h> |
63 | ||
64 | #include "util.h" | |
65 | ||
66 | #undef sun | |
67 | ||
68 | /*----- Data structures ---------------------------------------------------*/ | |
69 | ||
70 | #ifndef STRING_V | |
71 | # define STRING_V | |
72 | DA_DECL(string_v, char *); | |
73 | #endif | |
74 | ||
75 | /*----- Static variables --------------------------------------------------*/ | |
76 | ||
06b2a088 | 77 | static const char *pidfile = 0; |
78 | static const char *logname = 0; | |
410c8acf | 79 | static FILE *logfp = 0; |
80 | static unsigned f = 0; | |
81 | static int fd; | |
de014da6 | 82 | static const char *bgtag = 0; |
410c8acf | 83 | |
84 | #define f_bogus 1u | |
85 | #define f_spawn 2u | |
86 | #define f_daemon 4u | |
87 | #define f_spawnopts 8u | |
88 | #define f_syslog 16u | |
89 | #define f_command 32u | |
90 | #define f_noinput 64u | |
91 | #define f_warn 128u | |
92 | #define f_uclose 256u | |
93 | ||
94 | /*----- Main code ---------------------------------------------------------*/ | |
95 | ||
96 | static void reap(int sig) | |
97 | { | |
410c8acf | 98 | int e = errno; |
06b2a088 | 99 | while (waitpid(-1, 0, WNOHANG) > 0) |
410c8acf | 100 | ; |
101 | errno = e; | |
102 | } | |
103 | ||
104 | static void writelog(const char *cat, const char *msg) | |
105 | { | |
106 | char buf[256]; | |
107 | time_t t = time(0); | |
108 | struct tm *tm = localtime(&t); | |
109 | strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", tm); | |
110 | fprintf(logfp, "%s %s: %s\n", buf, cat, msg); | |
111 | } | |
112 | ||
de014da6 | 113 | static void checkbg(char **p) |
114 | { | |
115 | char *q = str_getword(p); | |
116 | if (!q) | |
117 | die(EXIT_FAILURE, "missing background tag"); | |
118 | if (!bgtag || strcmp(bgtag, q) != 0) | |
119 | die(EXIT_FAILURE, "unexpected background tag `%s'", q); | |
120 | } | |
121 | ||
122 | static void checkfg(void) | |
123 | { | |
124 | if (bgtag) | |
125 | die(EXIT_FAILURE, "unexpected foreground response"); | |
126 | } | |
127 | ||
6be88c14 | 128 | static void cline(char *p, size_t len, void *b) |
410c8acf | 129 | { |
130 | char *q; | |
131 | if (!p) { | |
132 | if (f & f_command) | |
133 | die(EXIT_FAILURE, "server dropped the connection"); | |
134 | exit(0); | |
135 | } | |
136 | q = str_getword(&p); | |
137 | if (!q) | |
138 | return; | |
139 | if (strcmp(q, "WARN") == 0) { | |
140 | if (f & f_syslog) | |
141 | syslog(LOG_WARNING, "%s", p); | |
142 | if (logfp) | |
143 | writelog("warning", p); | |
144 | if (f & f_warn) | |
145 | fprintf(stderr, "Warning: %s\n", p); | |
146 | } else if (strcmp(q, "TRACE") == 0) { | |
147 | if (f & f_syslog) | |
148 | syslog(LOG_DEBUG, "%s", p); | |
149 | if (logfp) | |
150 | writelog("debug", p); | |
151 | } else if (!(f & f_command)) { | |
152 | if (f & f_syslog) | |
153 | syslog(LOG_ERR, "unexpected output `%s %s'", q, p); | |
154 | if (logfp) { | |
155 | dstr d = DSTR_INIT; | |
156 | dstr_putf(&d, "unexpected output `%s %s'", q, p); | |
157 | writelog("error", d.buf); | |
158 | dstr_destroy(&d); | |
159 | } | |
de014da6 | 160 | } else if (strcmp(q, "FAIL") == 0) { |
161 | checkfg(); | |
410c8acf | 162 | die(EXIT_FAILURE, "%s", p); |
de014da6 | 163 | } else if (strcmp(q, "INFO") == 0) { |
164 | checkfg(); | |
410c8acf | 165 | puts(p); |
de014da6 | 166 | } else if (strcmp(q, "OK") == 0) { |
167 | checkfg(); | |
168 | exit(0); | |
169 | } else if (strcmp(q, "BGDETACH") == 0) { | |
170 | if (bgtag) | |
171 | die(EXIT_FAILURE, "repeat detach"); | |
172 | bgtag = xstrdup(p); | |
173 | } else if (strcmp(q, "BGOK") == 0) { | |
174 | checkbg(&p); | |
410c8acf | 175 | exit(0); |
de014da6 | 176 | } else if (strcmp(q, "BGINFO") == 0) { |
177 | checkbg(&p); | |
178 | puts(p); | |
179 | } else if (strcmp(q, "BGFAIL") == 0) { | |
180 | checkbg(&p); | |
181 | die(EXIT_FAILURE, "%s", p); | |
182 | } else | |
410c8acf | 183 | die(EXIT_FAILURE, "unexpected output `%s %s'", q, p); |
184 | } | |
185 | ||
6be88c14 | 186 | static void sline(char *p, size_t len, void *b) |
410c8acf | 187 | { |
188 | if (!p) { | |
189 | if (!(f & f_uclose)) | |
190 | moan("server closed the connection"); | |
191 | exit(0); | |
192 | } | |
193 | puts(p); | |
194 | } | |
195 | ||
6be88c14 | 196 | static void uline(char *p, size_t len, void *b) |
410c8acf | 197 | { |
410c8acf | 198 | if (!p) { |
199 | selbuf_destroy(b); | |
200 | shutdown(fd, 1); | |
201 | f |= f_uclose; | |
202 | } else { | |
6be88c14 | 203 | p[len] = '\n'; |
3cdc3f3a | 204 | errno = EIO; |
205 | if (write(fd, p, len + 1) != len + 1) | |
206 | moan("write failed: %s", strerror(errno)); | |
207 | } | |
208 | } | |
209 | ||
210 | static void setup(const char *cmd) | |
211 | { | |
212 | dstr d = DSTR_INIT; | |
213 | char ch; | |
214 | char *p, *q; | |
215 | int n; | |
216 | ||
217 | dstr_puts(&d, cmd); | |
218 | dstr_putc(&d, '\n'); | |
219 | errno = EIO; /* Relax: be vague */ | |
220 | if (write(fd, d.buf, d.len) != d.len) { | |
221 | die(EXIT_FAILURE, "error sending setup command `%s': %s", | |
222 | cmd, strerror(errno)); | |
223 | } | |
224 | dstr_reset(&d); | |
225 | for (;;) { | |
226 | n = read(fd, &ch, 1); | |
227 | if (!n) | |
228 | die(EXIT_FAILURE, "unexpected EOF during setup"); | |
229 | if (n < 0) { | |
230 | die(EXIT_FAILURE, "error receiving reply to `%s': %s", | |
231 | cmd, strerror(errno)); | |
232 | } | |
233 | if (d.len < 256) | |
234 | dstr_putc(&d, ch); | |
235 | if (ch == '\n') { | |
236 | p = d.buf; | |
237 | q = str_getword(&p); | |
238 | if (!q) | |
239 | ; | |
240 | else if (strcmp(q, "OK") == 0) | |
241 | return; | |
242 | else if (strcmp(q, "FAIL") == 0) | |
243 | die(EXIT_FAILURE, "setup command `%s' failed: %s", cmd, p); | |
244 | dstr_reset(&d); | |
245 | } | |
410c8acf | 246 | } |
247 | } | |
248 | ||
9dd01bc6 | 249 | static void logfile(const char *name) |
250 | { | |
fa4bef80 | 251 | FILE *fp; |
252 | ||
253 | if ((fp = fopen(name, "a")) != 0) { | |
254 | if (logfp) | |
255 | fclose(logfp); | |
256 | logfp = fp; | |
257 | setvbuf(logfp, 0, _IOLBF, BUFSIZ); | |
258 | } else { | |
259 | dstr d = DSTR_INIT; | |
260 | dstr_putf(&d, "error opening logfile `%s': %s", name, strerror(errno)); | |
261 | if (logfp) | |
262 | writelog("error", d.buf); | |
263 | else if (logname) | |
264 | die(EXIT_FAILURE, d.buf); | |
265 | if (f & f_syslog) | |
266 | syslog(LOG_ERR, d.buf); | |
267 | dstr_destroy(&d); | |
9dd01bc6 | 268 | } |
9dd01bc6 | 269 | } |
270 | ||
f98df549 | 271 | static void sighup(int sig, void *v) { logfile(logname); } |
5f5150b1 | 272 | |
06b2a088 | 273 | static void cleanup(void) |
274 | { | |
275 | if (pidfile) | |
276 | unlink(pidfile); | |
277 | } | |
278 | ||
279 | static void sigdie(int sig) | |
280 | { | |
281 | cleanup(); | |
282 | signal(sig, SIG_DFL); | |
283 | raise(sig); | |
284 | } | |
285 | ||
410c8acf | 286 | static void version(FILE *fp) |
f98df549 | 287 | { pquis(fp, "$, TrIPE version " VERSION "\n"); } |
410c8acf | 288 | |
289 | static void usage(FILE *fp) | |
290 | { | |
291 | pquis(fp, "\ | |
292 | Usage:\n\ | |
2d752320 | 293 | $ [-w] [-OPTIONS] [COMMAND [ARGS]...]\n\ |
294 | $ [-Dl] [-f FILE] [-OPTIONS]\n\ | |
410c8acf | 295 | Options:\n\ |
2d752320 | 296 | [-s] [-d DIRECTORY] [-a SOCKET] [-P PIDFILE]\n\ |
297 | [-p PROGRAM] [-S ARG,ARG,...]\n\ | |
410c8acf | 298 | "); |
299 | } | |
300 | ||
301 | static void help(FILE *fp) | |
302 | { | |
303 | version(fp); | |
304 | fputc('\n', fp); | |
305 | usage(fp); | |
306 | fputs("\ | |
307 | \n\ | |
308 | Options in full:\n\ | |
309 | \n\ | |
310 | -h, --help Show this help text.\n\ | |
311 | -v, --version Show version number.\n\ | |
312 | -u, --usage Show brief usage message.\n\ | |
313 | \n\ | |
314 | -D, --daemon Become a background task after connecting.\n\ | |
ef4a1ab7 | 315 | -d, --directory=DIR Select current directory [default " CONFIGDIR "].\n\ |
3cdc3f3a | 316 | -a, --admin-socket=FILE Select socket to connect to\n\ |
ef4a1ab7 | 317 | [default " SOCKETDIR "/tripesock].\n\ |
06b2a088 | 318 | -P, --pidfile=FILE Write process-id to FILE.\n\ |
410c8acf | 319 | \n\ |
320 | -s, --spawn Start server rather than connecting.\n\ | |
321 | -p, --spawn-path=PATH Specify path to executable.\n\ | |
322 | -S, --spawn-args=ARGS Specify comma-separated arguments.\n\ | |
323 | \n\ | |
324 | -l, --syslog Log messages to system log.\n\ | |
325 | -f, --logfile=FILE Log messages to FILE.\n\ | |
326 | -w, --warnings Show warnings when running commands.\n\ | |
327 | ", fp); | |
328 | } | |
329 | ||
330 | int main(int argc, char *argv[]) | |
331 | { | |
ef4a1ab7 | 332 | const char *dir = CONFIGDIR; |
333 | const char *sock = SOCKETDIR "/tripesock"; | |
410c8acf | 334 | const char *spawnpath = "tripe"; |
335 | string_v spawnopts = DA_INIT; | |
336 | char *p; | |
06b2a088 | 337 | FILE *pidfp = 0; |
410c8acf | 338 | |
339 | ego(argv[0]); | |
340 | ||
341 | if ((p = getenv("TRIPEDIR")) != 0) | |
342 | dir = p; | |
343 | ||
344 | /* --- Parse the arguments --- */ | |
345 | ||
346 | for (;;) { | |
347 | static const struct option opts[] = { | |
348 | { "help", 0, 0, 'h' }, | |
349 | { "version", 0, 0, 'v' }, | |
350 | { "usage", 0, 0, 'u' }, | |
351 | { "daemon", 0, 0, 'D' }, | |
352 | { "directory", OPTF_ARGREQ, 0, 'd' }, | |
353 | { "admin-socket", OPTF_ARGREQ, 0, 'a' }, | |
354 | { "spawn", 0, 0, 's' }, | |
355 | { "spawn-path", OPTF_ARGREQ, 0, 'p' }, | |
356 | { "spawn-args", OPTF_ARGREQ, 0, 'S' }, | |
357 | { "syslog", 0, 0, 'l' }, | |
358 | { "logfile", OPTF_ARGREQ, 0, 'f' }, | |
359 | { "warnings", 0, 0, 'w' }, | |
06b2a088 | 360 | { "pidfile", OPTF_ARGREQ, 0, 'P' }, |
410c8acf | 361 | { 0, 0, 0, 0 } |
362 | }; | |
363 | ||
06b2a088 | 364 | int i = mdwopt(argc, argv, "+hvuDd:a:sp:S:lwf:nP:", opts, 0, 0, 0); |
410c8acf | 365 | if (i < 0) |
366 | break; | |
367 | switch (i) { | |
368 | case 'h': | |
369 | help(stdout); | |
370 | exit(0); | |
371 | case 'v': | |
372 | version(stdout); | |
373 | exit(0); | |
374 | case 'u': | |
375 | usage(stdout); | |
376 | exit(0); | |
377 | case 'D': | |
378 | f |= f_daemon | f_noinput; | |
379 | break; | |
380 | case 'd': | |
381 | dir = optarg; | |
382 | break; | |
383 | case 'a': | |
384 | sock = optarg; | |
385 | break; | |
386 | case 's': | |
387 | f |= f_spawn; | |
388 | break; | |
389 | case 'p': | |
390 | f |= f_spawn; | |
391 | spawnpath = optarg; | |
392 | break; | |
393 | case 'S': | |
394 | f |= f_spawn | f_spawnopts; | |
395 | for (p = strtok(optarg, ","); p; p = strtok(0, ",")) | |
396 | DA_PUSH(&spawnopts, p); | |
397 | break; | |
398 | case 'l': | |
399 | f |= f_syslog | f_noinput; | |
400 | break; | |
401 | case 'w': | |
402 | f |= f_warn; | |
403 | break; | |
404 | case 'f': | |
9dd01bc6 | 405 | logname = optarg; |
410c8acf | 406 | f |= f_noinput; |
407 | break; | |
06b2a088 | 408 | case 'P': |
409 | pidfile = optarg; | |
410 | break; | |
410c8acf | 411 | default: |
412 | f |= f_bogus; | |
413 | break; | |
414 | } | |
415 | } | |
416 | if ((f & f_bogus) || ((f & f_noinput) && optind < argc)) { | |
417 | usage(stderr); | |
418 | exit(EXIT_FAILURE); | |
419 | } | |
420 | ||
06b2a088 | 421 | /* --- Set various things up --- */ |
422 | ||
423 | if (chdir(dir)) { | |
424 | die(EXIT_FAILURE, "couldn't set `%s' as current directory: %s", | |
425 | dir, strerror(errno)); | |
426 | } | |
427 | if (logname) | |
428 | logfile(logname); | |
429 | if (!pidfile && (f & f_daemon) && ((f & f_syslog) || logname)) | |
430 | pidfile = "tripectl.pid"; | |
431 | if (pidfile && (pidfp = fopen(pidfile, "w")) == 0) { | |
432 | die(EXIT_FAILURE, "couldn't open `%s' for writing: %s", | |
433 | pidfile, strerror(errno)); | |
434 | } | |
435 | signal(SIGINT, sigdie); | |
436 | signal(SIGQUIT, sigdie); | |
437 | signal(SIGTERM, sigdie); | |
438 | atexit(cleanup); | |
439 | ||
410c8acf | 440 | /* --- Connect to the server --- */ |
441 | ||
442 | if (f & f_spawn) { | |
443 | int pfd[2]; | |
444 | pid_t kid; | |
445 | struct sigaction sa; | |
446 | sigset_t newmask, oldmask; | |
447 | ||
448 | sa.sa_handler = reap; | |
449 | sigemptyset(&sa.sa_mask); | |
450 | sa.sa_flags = SA_NOCLDSTOP; | |
451 | #ifdef SA_RESTART | |
452 | sa.sa_flags |= SA_RESTART; | |
453 | #endif | |
454 | sigaction(SIGCHLD, &sa, 0); | |
455 | ||
06b2a088 | 456 | DA_UNSHIFT(&spawnopts, (char *)sock); |
457 | DA_UNSHIFT(&spawnopts, "-a"); | |
458 | DA_UNSHIFT(&spawnopts, "-d."); | |
d071d798 | 459 | DA_UNSHIFT(&spawnopts, (char *)spawnpath); |
410c8acf | 460 | DA_PUSH(&spawnopts, 0); |
461 | if (socketpair(PF_UNIX, SOCK_STREAM, 0, pfd)) | |
462 | die(EXIT_FAILURE, "error from socketpair: %s", strerror(errno)); | |
463 | sigemptyset(&newmask); | |
464 | sigaddset(&newmask, SIGCHLD); | |
465 | sigprocmask(SIG_BLOCK, &newmask, &oldmask); | |
466 | if ((kid = fork()) < 0) | |
467 | die(EXIT_FAILURE, "fork failed: %s", strerror(errno)); | |
468 | if (!kid) { | |
469 | dup2(pfd[1], STDIN_FILENO); | |
470 | dup2(pfd[1], STDOUT_FILENO); | |
471 | close(pfd[1]); | |
472 | close(pfd[0]); | |
9dd01bc6 | 473 | if (logfp) |
474 | fclose(logfp); | |
7ed14135 | 475 | if (pidfp) |
476 | fclose(pidfp); | |
9dd01bc6 | 477 | closelog(); |
06b2a088 | 478 | if (f & f_daemon) |
479 | u_detach(); | |
410c8acf | 480 | execvp(DA(&spawnopts)[0], DA(&spawnopts)); |
481 | die(127, "couldn't exec `%s': %s", spawnpath, strerror(errno)); | |
482 | } | |
483 | sigprocmask(SIG_SETMASK, &oldmask, 0); | |
484 | fd = pfd[0]; | |
485 | close(pfd[1]); | |
486 | } else { | |
487 | struct sockaddr_un sun; | |
488 | size_t sz = strlen(sock) + 1; | |
06b2a088 | 489 | if (sz > sizeof(sun.sun_path)) |
410c8acf | 490 | die(EXIT_FAILURE, "socket name `%s' too long", sock); |
491 | memset(&sun, 0, sizeof(sun)); | |
492 | sun.sun_family = AF_UNIX; | |
06b2a088 | 493 | memcpy(sun.sun_path, sock, sz); |
494 | sz = sz + offsetof(struct sockaddr_un, sun_path); | |
410c8acf | 495 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) |
496 | die(EXIT_FAILURE, "error making socket: %s", strerror(errno)); | |
497 | if (connect(fd, (struct sockaddr *)&sun, sz)) { | |
498 | die(EXIT_FAILURE, "error connecting to `%s': %s", | |
9dd01bc6 | 499 | sun.sun_path, strerror(errno)); |
410c8acf | 500 | } |
501 | } | |
502 | ||
503 | if (f & f_daemon) { | |
504 | if (u_daemon()) | |
505 | die(EXIT_FAILURE, "error becoming daemon: %s", strerror(errno)); | |
506 | } | |
06b2a088 | 507 | if (pidfp) { |
a803add7 | 508 | fprintf(pidfp, "%li\n", (long)getpid()); |
06b2a088 | 509 | fclose(pidfp); |
510 | } | |
3cdc3f3a | 511 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 512 | |
513 | /* --- If we're meant to be interactive, do that --- */ | |
514 | ||
3cdc3f3a | 515 | if (optind == argc) |
516 | setup("WATCH -A+tw"); | |
410c8acf | 517 | if (!(f & f_noinput) && optind == argc) { |
518 | sel_state sel; | |
519 | selbuf bu, bs; | |
520 | ||
521 | sel_init(&sel); | |
522 | selbuf_init(&bu, &sel, STDIN_FILENO, uline, &bu); | |
523 | selbuf_init(&bs, &sel, fd, sline, &bs); | |
524 | for (;;) { | |
5f5150b1 | 525 | if (sel_select(&sel) && errno != EINTR && errno != EAGAIN) |
410c8acf | 526 | die(EXIT_FAILURE, "select failed: %s", strerror(errno)); |
527 | } | |
528 | } | |
529 | ||
530 | /* --- If there's a command, submit it --- */ | |
531 | ||
532 | if (optind < argc) { | |
533 | dstr d = DSTR_INIT; | |
3cdc3f3a | 534 | setup((f & f_warn) ? "WATCH -A+w" : "WATCH -A"); |
0ed0735f MW |
535 | while (optind < argc) |
536 | u_quotify(&d, argv[optind++]); | |
410c8acf | 537 | dstr_putc(&d, '\n'); |
3cdc3f3a | 538 | errno = EIO; |
539 | if (write(fd, d.buf, d.len) != d.len || shutdown(fd, 1)) | |
540 | die(EXIT_FAILURE, "write failed: %s", strerror(errno)); | |
410c8acf | 541 | dstr_destroy(&d); |
542 | f |= f_command; | |
543 | } | |
544 | ||
545 | /* --- Pull everything else out of the box --- */ | |
546 | ||
547 | { | |
5f5150b1 | 548 | sel_state sel; |
549 | selbuf b; | |
550 | sig hup; | |
551 | ||
552 | sel_init(&sel); | |
553 | selbuf_init(&b, &sel, fd, cline, 0); | |
554 | ||
410c8acf | 555 | if (f & f_syslog) |
556 | openlog(QUIS, 0, LOG_DAEMON); | |
9dd01bc6 | 557 | if (logfp) { |
5f5150b1 | 558 | sig_init(&sel); |
559 | sig_add(&hup, SIGHUP, sighup, 0); | |
9dd01bc6 | 560 | } |
410c8acf | 561 | for (;;) { |
5f5150b1 | 562 | if (sel_select(&sel) && errno != EINTR && errno != EAGAIN) |
563 | die(EXIT_FAILURE, "select failed: %s", strerror(errno)); | |
410c8acf | 564 | } |
410c8acf | 565 | } |
566 | ||
567 | return (0); | |
568 | } | |
569 | ||
570 | /*----- That's all, folks -------------------------------------------------*/ |