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ef416fc2 | 1 | /* |
b94498cf | 2 | * "$Id: main.c 6493 2007-04-30 19:33:31Z mike $" |
ef416fc2 | 3 | * |
4 | * Scheduler main loop for the Common UNIX Printing System (CUPS). | |
5 | * | |
f7deaa1a | 6 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 7 | * |
8 | * These coded instructions, statements, and computer programs are the | |
9 | * property of Easy Software Products and are protected by Federal | |
10 | * copyright law. Distribution and use rights are outlined in the file | |
11 | * "LICENSE" which should have been included with this file. If this | |
12 | * file is missing or damaged please contact Easy Software Products | |
13 | * at: | |
14 | * | |
15 | * Attn: CUPS Licensing Information | |
16 | * Easy Software Products | |
17 | * 44141 Airport View Drive, Suite 204 | |
18 | * Hollywood, Maryland 20636 USA | |
19 | * | |
20 | * Voice: (301) 373-9600 | |
21 | * EMail: cups-info@cups.org | |
22 | * WWW: http://www.cups.org | |
23 | * | |
24 | * Contents: | |
25 | * | |
26 | * main() - Main entry for the CUPS scheduler. | |
27 | * cupsdClosePipe() - Close a pipe as necessary. | |
28 | * cupsdOpenPipe() - Create a pipe which is closed on exec. | |
ef416fc2 | 29 | * cupsdHoldSignals() - Hold child and termination signals. |
ef416fc2 | 30 | * cupsdReleaseSignals() - Release signals for delivery. |
31 | * cupsdSetString() - Set a string value. | |
32 | * cupsdSetStringf() - Set a formatted string value. | |
a4d04587 | 33 | * launchd_checkin() - Check-in with launchd and collect the |
34 | * listening fds. | |
f7deaa1a | 35 | * launchd_checkout() - Check-out with launchd. |
ef416fc2 | 36 | * parent_handler() - Catch USR1/CHLD signals... |
37 | * process_children() - Process all dead children... | |
38 | * sigchld_handler() - Handle 'child' signals from old processes. | |
39 | * sighup_handler() - Handle 'hangup' signals to reconfigure the | |
40 | * scheduler. | |
41 | * sigterm_handler() - Handle 'terminate' signals that stop the | |
42 | * scheduler. | |
43 | * select_timeout() - Calculate the select timeout value. | |
44 | * usage() - Show scheduler usage. | |
45 | */ | |
46 | ||
47 | /* | |
48 | * Include necessary headers... | |
49 | */ | |
50 | ||
51 | #define _MAIN_C_ | |
52 | #include "cupsd.h" | |
53 | #include <sys/resource.h> | |
54 | #include <syslog.h> | |
55 | #include <grp.h> | |
56 | ||
a4d04587 | 57 | #ifdef HAVE_LAUNCH_H |
58 | # include <launch.h> | |
59 | # include <libgen.h> | |
7594b224 | 60 | # define CUPS_KEEPALIVE CUPS_CACHEDIR "/org.cups.cupsd" |
f7deaa1a | 61 | /* Name of the launchd KeepAlive file */ |
62 | # ifndef LAUNCH_JOBKEY_KEEPALIVE | |
63 | # define LAUNCH_JOBKEY_KEEPALIVE "KeepAlive" | |
64 | # endif /* !LAUNCH_JOBKEY_KEEPALIVE */ | |
65 | # ifndef LAUNCH_JOBKEY_PATHSTATE | |
66 | # define LAUNCH_JOBKEY_PATHSTATE "PathState" | |
67 | # endif /* !LAUNCH_JOBKEY_PATHSTATE */ | |
68 | # ifndef LAUNCH_JOBKEY_SERVICEIPC | |
69 | # define LAUNCH_JOBKEY_SERVICEIPC "ServiceIPC" | |
70 | # endif /* !LAUNCH_JOBKEY_SERVICEIPC */ | |
a4d04587 | 71 | #endif /* HAVE_LAUNCH_H */ |
72 | ||
ef416fc2 | 73 | #if defined(HAVE_MALLOC_H) && defined(HAVE_MALLINFO) |
74 | # include <malloc.h> | |
75 | #endif /* HAVE_MALLOC_H && HAVE_MALLINFO */ | |
fa73b229 | 76 | #ifdef HAVE_NOTIFY_H |
77 | # include <notify.h> | |
78 | #endif /* HAVE_NOTIFY_H */ | |
ef416fc2 | 79 | |
7594b224 | 80 | #if defined(__APPLE__) && defined(HAVE_DLFCN_H) |
81 | # include <dlfcn.h> | |
82 | #endif /* __APPLE__ && HAVE_DLFCN_H */ | |
83 | ||
ef416fc2 | 84 | |
85 | /* | |
86 | * Local functions... | |
87 | */ | |
88 | ||
a4d04587 | 89 | #ifdef HAVE_LAUNCHD |
411affcf | 90 | static void launchd_checkin(void); |
f7deaa1a | 91 | static void launchd_checkout(void); |
a4d04587 | 92 | #endif /* HAVE_LAUNCHD */ |
411affcf | 93 | static void parent_handler(int sig); |
94 | static void process_children(void); | |
95 | static void sigchld_handler(int sig); | |
96 | static void sighup_handler(int sig); | |
97 | static void sigterm_handler(int sig); | |
98 | static long select_timeout(int fds); | |
99 | static void usage(int status); | |
ef416fc2 | 100 | |
101 | ||
102 | /* | |
103 | * Local globals... | |
104 | */ | |
105 | ||
411affcf | 106 | static int parent_signal = 0; |
107 | /* Set to signal number from child */ | |
108 | static int holdcount = 0; /* Number of times "hold" was called */ | |
ef416fc2 | 109 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
411affcf | 110 | static sigset_t holdmask; /* Old POSIX signal mask */ |
ef416fc2 | 111 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ |
411affcf | 112 | static int dead_children = 0; |
113 | /* Dead children? */ | |
114 | static int stop_scheduler = 0; | |
115 | /* Should the scheduler stop? */ | |
116 | ||
7594b224 | 117 | #if defined(__APPLE__) && defined(HAVE_DLFCN_H) |
118 | static const char *PSQLibPath = "/usr/lib/libPrintServiceQuota.dylib"; | |
119 | static const char *PSQLibFuncName = "PSQUpdateQuota"; | |
120 | static void *PSQLibRef; /* libPrintServiceQuota.dylib */ | |
121 | #endif /* HAVE_DLFCN_H */ | |
122 | ||
ef416fc2 | 123 | |
124 | /* | |
125 | * 'main()' - Main entry for the CUPS scheduler. | |
126 | */ | |
127 | ||
128 | int /* O - Exit status */ | |
bd7854cb | 129 | main(int argc, /* I - Number of command-line args */ |
ef416fc2 | 130 | char *argv[]) /* I - Command-line arguments */ |
131 | { | |
132 | int i; /* Looping var */ | |
133 | char *opt; /* Option character */ | |
134 | int fg; /* Run in the foreground */ | |
bd7854cb | 135 | int fds; /* Number of ready descriptors */ |
ef416fc2 | 136 | cupsd_client_t *con; /* Current client */ |
137 | cupsd_job_t *job; /* Current job */ | |
138 | cupsd_listener_t *lis; /* Current listener */ | |
139 | time_t current_time, /* Current time */ | |
a4d04587 | 140 | activity, /* Client activity timer */ |
ef416fc2 | 141 | browse_time, /* Next browse send time */ |
142 | senddoc_time, /* Send-Document time */ | |
411affcf | 143 | expire_time, /* Subscription expire time */ |
411affcf | 144 | mallinfo_time; /* Malloc information time */ |
4400e98d | 145 | size_t string_count, /* String count */ |
146 | alloc_bytes, /* Allocated string bytes */ | |
147 | total_bytes; /* Total string bytes */ | |
f7deaa1a | 148 | long timeout; /* Timeout for cupsdDoSelect() */ |
ef416fc2 | 149 | struct rlimit limit; /* Runtime limit */ |
150 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
151 | struct sigaction action; /* Actions for POSIX signals */ | |
152 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
153 | #ifdef __sgi | |
154 | cups_file_t *fp; /* Fake lpsched lock file */ | |
155 | struct stat statbuf; /* Needed for checking lpsched FIFO */ | |
156 | #endif /* __sgi */ | |
a4d04587 | 157 | #if HAVE_LAUNCHD |
4400e98d | 158 | int launchd_idle_exit; |
a4d04587 | 159 | /* Idle exit on select timeout? */ |
160 | #endif /* HAVE_LAUNCHD */ | |
ef416fc2 | 161 | |
162 | ||
163 | /* | |
164 | * Check for command-line arguments... | |
165 | */ | |
166 | ||
4400e98d | 167 | fg = 0; |
ef416fc2 | 168 | |
169 | for (i = 1; i < argc; i ++) | |
170 | if (argv[i][0] == '-') | |
171 | for (opt = argv[i] + 1; *opt != '\0'; opt ++) | |
172 | switch (*opt) | |
173 | { | |
174 | case 'c' : /* Configuration file */ | |
175 | i ++; | |
176 | if (i >= argc) | |
a4d04587 | 177 | { |
178 | _cupsLangPuts(stderr, _("cupsd: Expected config filename " | |
179 | "after \"-c\" option!\n")); | |
180 | usage(1); | |
181 | } | |
ef416fc2 | 182 | |
183 | if (argv[i][0] == '/') | |
184 | { | |
185 | /* | |
186 | * Absolute directory... | |
187 | */ | |
188 | ||
189 | cupsdSetString(&ConfigurationFile, argv[i]); | |
190 | } | |
191 | else | |
192 | { | |
193 | /* | |
194 | * Relative directory... | |
195 | */ | |
196 | ||
09ec0018 | 197 | char *current; /* Current directory */ |
ef416fc2 | 198 | |
199 | ||
09ec0018 | 200 | /* |
201 | * Allocate a buffer for the current working directory to | |
202 | * reduce run-time stack usage; this approximates the | |
203 | * behavior of some implementations of getcwd() when they | |
204 | * are passed a NULL pointer. | |
205 | */ | |
206 | ||
207 | current = malloc(1024); | |
208 | getcwd(current, 1024); | |
209 | ||
ef416fc2 | 210 | cupsdSetStringf(&ConfigurationFile, "%s/%s", current, argv[i]); |
09ec0018 | 211 | |
212 | free(current); | |
ef416fc2 | 213 | } |
214 | break; | |
215 | ||
216 | case 'f' : /* Run in foreground... */ | |
217 | fg = 1; | |
218 | break; | |
219 | ||
bd7854cb | 220 | case 'F' : /* Run in foreground, but disconnect from terminal... */ |
ef416fc2 | 221 | fg = -1; |
222 | break; | |
223 | ||
a4d04587 | 224 | case 'h' : /* Show usage/help */ |
225 | usage(0); | |
226 | break; | |
227 | ||
228 | case 'l' : /* Started by launchd... */ | |
229 | #ifdef HAVE_LAUNCHD | |
4400e98d | 230 | Launchd = 1; |
a4d04587 | 231 | fg = 1; |
232 | #else | |
233 | _cupsLangPuts(stderr, _("cupsd: launchd(8) support not compiled " | |
234 | "in, running in normal mode.\n")); | |
235 | fg = 0; | |
236 | #endif /* HAVE_LAUNCHD */ | |
237 | break; | |
238 | ||
a74454a7 | 239 | case 'p' : /* Stop immediately for profiling */ |
240 | puts("Warning: -p option is for internal testing use only!"); | |
241 | stop_scheduler = 1; | |
242 | fg = 1; | |
243 | break; | |
244 | ||
ef416fc2 | 245 | default : /* Unknown option */ |
a4d04587 | 246 | _cupsLangPrintf(stderr, _("cupsd: Unknown option \"%c\" - " |
247 | "aborting!\n"), *opt); | |
248 | usage(1); | |
ef416fc2 | 249 | break; |
250 | } | |
251 | else | |
252 | { | |
a4d04587 | 253 | _cupsLangPrintf(stderr, _("cupsd: Unknown argument \"%s\" - aborting!\n"), |
254 | argv[i]); | |
255 | usage(1); | |
ef416fc2 | 256 | } |
257 | ||
258 | if (!ConfigurationFile) | |
259 | cupsdSetString(&ConfigurationFile, CUPS_SERVERROOT "/cupsd.conf"); | |
260 | ||
261 | /* | |
262 | * If the user hasn't specified "-f", run in the background... | |
263 | */ | |
264 | ||
265 | if (!fg) | |
266 | { | |
267 | /* | |
268 | * Setup signal handlers for the parent... | |
269 | */ | |
270 | ||
271 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
272 | sigset(SIGUSR1, parent_handler); | |
273 | sigset(SIGCHLD, parent_handler); | |
274 | ||
275 | sigset(SIGHUP, SIG_IGN); | |
276 | #elif defined(HAVE_SIGACTION) | |
277 | memset(&action, 0, sizeof(action)); | |
278 | sigemptyset(&action.sa_mask); | |
279 | sigaddset(&action.sa_mask, SIGUSR1); | |
280 | action.sa_handler = parent_handler; | |
281 | sigaction(SIGUSR1, &action, NULL); | |
282 | sigaction(SIGCHLD, &action, NULL); | |
283 | ||
284 | sigemptyset(&action.sa_mask); | |
285 | action.sa_handler = SIG_IGN; | |
286 | sigaction(SIGHUP, &action, NULL); | |
287 | #else | |
288 | signal(SIGUSR1, parent_handler); | |
289 | signal(SIGCLD, parent_handler); | |
290 | ||
291 | signal(SIGHUP, SIG_IGN); | |
292 | #endif /* HAVE_SIGSET */ | |
293 | ||
294 | if (fork() > 0) | |
295 | { | |
296 | /* | |
297 | * OK, wait for the child to startup and send us SIGUSR1 or to crash | |
298 | * and the OS send us SIGCHLD... We also need to ignore SIGHUP which | |
299 | * might be sent by the init script to restart the scheduler... | |
300 | */ | |
301 | ||
302 | for (; parent_signal == 0;) | |
303 | sleep(1); | |
304 | ||
305 | if (parent_signal == SIGUSR1) | |
306 | return (0); | |
307 | ||
308 | if (wait(&i) < 0) | |
309 | { | |
310 | perror("cupsd"); | |
311 | return (1); | |
312 | } | |
313 | else if (WIFEXITED(i)) | |
314 | { | |
bd7854cb | 315 | fprintf(stderr, "cupsd: Child exited with status %d!\n", |
316 | WEXITSTATUS(i)); | |
ef416fc2 | 317 | return (2); |
318 | } | |
319 | else | |
320 | { | |
321 | fprintf(stderr, "cupsd: Child exited on signal %d!\n", WTERMSIG(i)); | |
322 | return (3); | |
323 | } | |
324 | } | |
325 | } | |
326 | ||
327 | if (fg < 1) | |
328 | { | |
329 | /* | |
330 | * Make sure we aren't tying up any filesystems... | |
331 | */ | |
332 | ||
333 | chdir("/"); | |
334 | ||
335 | #ifndef DEBUG | |
336 | /* | |
337 | * Disable core dumps... | |
338 | */ | |
339 | ||
340 | getrlimit(RLIMIT_CORE, &limit); | |
341 | limit.rlim_cur = 0; | |
342 | setrlimit(RLIMIT_CORE, &limit); | |
343 | ||
344 | /* | |
345 | * Disconnect from the controlling terminal... | |
346 | */ | |
347 | ||
348 | setsid(); | |
349 | ||
350 | /* | |
351 | * Close all open files... | |
352 | */ | |
353 | ||
354 | getrlimit(RLIMIT_NOFILE, &limit); | |
355 | ||
b94498cf | 356 | for (i = 0; i < limit.rlim_cur && i < 1024; i ++) |
ef416fc2 | 357 | close(i); |
358 | #endif /* DEBUG */ | |
359 | } | |
360 | ||
361 | /* | |
362 | * Set the timezone info... | |
363 | */ | |
364 | ||
365 | tzset(); | |
366 | ||
367 | #ifdef LC_TIME | |
368 | setlocale(LC_TIME, ""); | |
369 | #endif /* LC_TIME */ | |
370 | ||
371 | /* | |
372 | * Set the maximum number of files... | |
373 | */ | |
374 | ||
375 | getrlimit(RLIMIT_NOFILE, &limit); | |
376 | ||
f7deaa1a | 377 | #if !defined(HAVE_POLL) && !defined(HAVE_EPOLL) && !defined(HAVE_KQUEUE) |
f7faf1f5 | 378 | if (limit.rlim_max > FD_SETSIZE) |
379 | MaxFDs = FD_SETSIZE; | |
ef416fc2 | 380 | else |
f7deaa1a | 381 | #endif /* !HAVE_POLL && !HAVE_EPOLL && !HAVE_KQUEUE */ |
382 | #ifdef RLIM_INFINITY | |
383 | if (limit.rlim_max == RLIM_INFINITY) | |
384 | MaxFDs = 16384; | |
385 | else | |
386 | #endif /* RLIM_INFINITY */ | |
ef416fc2 | 387 | MaxFDs = limit.rlim_max; |
388 | ||
389 | limit.rlim_cur = MaxFDs; | |
390 | ||
391 | setrlimit(RLIMIT_NOFILE, &limit); | |
392 | ||
f7deaa1a | 393 | cupsdStartSelect(); |
ef416fc2 | 394 | |
395 | /* | |
396 | * Read configuration... | |
397 | */ | |
398 | ||
399 | if (!cupsdReadConfiguration()) | |
400 | { | |
401 | syslog(LOG_LPR, "Unable to read configuration file \'%s\' - exiting!", | |
402 | ConfigurationFile); | |
403 | return (1); | |
404 | } | |
405 | ||
a4d04587 | 406 | #if HAVE_LAUNCHD |
4400e98d | 407 | if (Launchd) |
a4d04587 | 408 | { |
409 | /* | |
b94498cf | 410 | * If we were started by launchd get the listen sockets file descriptors... |
f7deaa1a | 411 | */ |
a4d04587 | 412 | |
413 | launchd_checkin(); | |
414 | } | |
415 | #endif /* HAVE_LAUNCHD */ | |
416 | ||
7594b224 | 417 | #if defined(__APPLE__) && defined(HAVE_DLFCN_H) |
418 | /* | |
419 | * Load Print Service quota enforcement library (X Server only) | |
420 | */ | |
421 | ||
422 | PSQLibRef = dlopen(PSQLibPath, RTLD_LAZY); | |
423 | ||
424 | if (PSQLibRef) | |
425 | PSQUpdateQuotaProc = dlsym(PSQLibRef, PSQLibFuncName); | |
426 | #endif /* __APPLE__ && HAVE_DLFCN_H */ | |
427 | ||
a4d04587 | 428 | /* |
429 | * Startup the server... | |
430 | */ | |
431 | ||
432 | cupsdStartServer(); | |
433 | ||
ef416fc2 | 434 | /* |
435 | * Catch hangup and child signals and ignore broken pipes... | |
436 | */ | |
437 | ||
438 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
e1d6a774 | 439 | sigset(SIGCHLD, sigchld_handler); |
4744bd90 | 440 | sigset(SIGHUP, sighup_handler); |
ef416fc2 | 441 | sigset(SIGPIPE, SIG_IGN); |
442 | sigset(SIGTERM, sigterm_handler); | |
443 | #elif defined(HAVE_SIGACTION) | |
444 | memset(&action, 0, sizeof(action)); | |
445 | ||
e1d6a774 | 446 | sigemptyset(&action.sa_mask); |
447 | sigaddset(&action.sa_mask, SIGTERM); | |
448 | sigaddset(&action.sa_mask, SIGCHLD); | |
449 | action.sa_handler = sigchld_handler; | |
450 | sigaction(SIGCHLD, &action, NULL); | |
451 | ||
ef416fc2 | 452 | sigemptyset(&action.sa_mask); |
453 | sigaddset(&action.sa_mask, SIGHUP); | |
4744bd90 | 454 | action.sa_handler = sighup_handler; |
ef416fc2 | 455 | sigaction(SIGHUP, &action, NULL); |
456 | ||
457 | sigemptyset(&action.sa_mask); | |
458 | action.sa_handler = SIG_IGN; | |
459 | sigaction(SIGPIPE, &action, NULL); | |
460 | ||
461 | sigemptyset(&action.sa_mask); | |
462 | sigaddset(&action.sa_mask, SIGTERM); | |
463 | sigaddset(&action.sa_mask, SIGCHLD); | |
464 | action.sa_handler = sigterm_handler; | |
465 | sigaction(SIGTERM, &action, NULL); | |
466 | #else | |
e1d6a774 | 467 | signal(SIGCLD, sigchld_handler); /* No, SIGCLD isn't a typo... */ |
4744bd90 | 468 | signal(SIGHUP, sighup_handler); |
ef416fc2 | 469 | signal(SIGPIPE, SIG_IGN); |
470 | signal(SIGTERM, sigterm_handler); | |
471 | #endif /* HAVE_SIGSET */ | |
472 | ||
473 | #ifdef __sgi | |
474 | /* | |
475 | * Try to create a fake lpsched lock file if one is not already there. | |
476 | * Some Adobe applications need it under IRIX in order to enable | |
477 | * printing... | |
478 | */ | |
479 | ||
480 | if ((fp = cupsFileOpen("/var/spool/lp/SCHEDLOCK", "w")) == NULL) | |
481 | { | |
482 | syslog(LOG_LPR, "Unable to create fake lpsched lock file " | |
483 | "\"/var/spool/lp/SCHEDLOCK\"\' - %s!", | |
484 | strerror(errno)); | |
485 | } | |
486 | else | |
487 | { | |
488 | fchmod(cupsFileNumber(fp), 0644); | |
489 | fchown(cupsFileNumber(fp), User, Group); | |
490 | ||
491 | cupsFileClose(fp); | |
492 | } | |
493 | #endif /* __sgi */ | |
494 | ||
495 | /* | |
496 | * Initialize authentication certificates... | |
497 | */ | |
498 | ||
499 | cupsdInitCerts(); | |
500 | ||
501 | /* | |
502 | * If we are running in the background, signal the parent process that | |
503 | * we are up and running... | |
504 | */ | |
505 | ||
506 | if (!fg) | |
507 | { | |
508 | /* | |
509 | * Send a signal to the parent process, but only if the parent is | |
510 | * not PID 1 (init). This avoids accidentally shutting down the | |
511 | * system on OpenBSD if you CTRL-C the server before it is up... | |
512 | */ | |
513 | ||
514 | i = getppid(); /* Save parent PID to avoid race condition */ | |
515 | ||
516 | if (i != 1) | |
517 | kill(i, SIGUSR1); | |
518 | } | |
519 | ||
e1d6a774 | 520 | #ifdef __APPLE__ |
09ec0018 | 521 | /* |
522 | * Start power management framework... | |
523 | */ | |
524 | ||
525 | cupsdStartSystemMonitor(); | |
e1d6a774 | 526 | #endif /* __APPLE__ */ |
ef416fc2 | 527 | |
528 | /* | |
529 | * Start any pending print jobs... | |
530 | */ | |
531 | ||
532 | cupsdCheckJobs(); | |
533 | ||
534 | /* | |
535 | * Loop forever... | |
536 | */ | |
537 | ||
ef416fc2 | 538 | mallinfo_time = 0; |
ef416fc2 | 539 | browse_time = time(NULL); |
540 | senddoc_time = time(NULL); | |
541 | expire_time = time(NULL); | |
542 | fds = 1; | |
543 | ||
544 | while (!stop_scheduler) | |
545 | { | |
546 | #ifdef DEBUG | |
547 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
548 | "main: Top of loop, dead_children=%d, NeedReload=%d", | |
549 | dead_children, NeedReload); | |
550 | #endif /* DEBUG */ | |
551 | ||
552 | /* | |
553 | * Check if there are dead children to handle... | |
554 | */ | |
555 | ||
556 | if (dead_children) | |
557 | process_children(); | |
558 | ||
559 | /* | |
560 | * Check if we need to load the server configuration file... | |
561 | */ | |
562 | ||
563 | if (NeedReload) | |
564 | { | |
565 | /* | |
566 | * Close any idle clients... | |
567 | */ | |
568 | ||
bd7854cb | 569 | if (cupsArrayCount(Clients) > 0) |
ef416fc2 | 570 | { |
bd7854cb | 571 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
572 | con; | |
573 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 574 | if (con->http.state == HTTP_WAITING) |
ef416fc2 | 575 | cupsdCloseClient(con); |
ef416fc2 | 576 | else |
577 | con->http.keep_alive = HTTP_KEEPALIVE_OFF; | |
578 | ||
579 | cupsdPauseListening(); | |
580 | } | |
581 | ||
582 | /* | |
583 | * Check for any active jobs... | |
584 | */ | |
585 | ||
586 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
587 | job; | |
588 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
bd7854cb | 589 | if (job->state_value == IPP_JOB_PROCESSING) |
ef416fc2 | 590 | break; |
591 | ||
592 | /* | |
593 | * Restart if all clients are closed and all jobs finished, or | |
594 | * if the reload timeout has elapsed... | |
595 | */ | |
596 | ||
bd7854cb | 597 | if ((cupsArrayCount(Clients) == 0 && |
598 | (!job || NeedReload != RELOAD_ALL)) || | |
ef416fc2 | 599 | (time(NULL) - ReloadTime) >= ReloadTimeout) |
600 | { | |
a4d04587 | 601 | /* |
602 | * Shutdown the server... | |
603 | */ | |
604 | ||
605 | cupsdStopServer(); | |
606 | ||
607 | /* | |
608 | * Read configuration... | |
609 | */ | |
610 | ||
ef416fc2 | 611 | if (!cupsdReadConfiguration()) |
612 | { | |
613 | syslog(LOG_LPR, "Unable to read configuration file \'%s\' - exiting!", | |
614 | ConfigurationFile); | |
615 | break; | |
616 | } | |
a4d04587 | 617 | |
618 | #if HAVE_LAUNCHD | |
4400e98d | 619 | if (Launchd) |
a4d04587 | 620 | { |
b94498cf | 621 | /* |
622 | * If we were started by launchd get the listen sockets file descriptors... | |
623 | */ | |
624 | ||
a4d04587 | 625 | launchd_checkin(); |
626 | } | |
627 | #endif /* HAVE_LAUNCHD */ | |
628 | ||
629 | /* | |
630 | * Startup the server... | |
631 | */ | |
632 | ||
633 | cupsdStartServer(); | |
ef416fc2 | 634 | } |
635 | } | |
636 | ||
637 | /* | |
f7deaa1a | 638 | * Check for available input or ready output. If cupsdDoSelect() |
639 | * returns 0 or -1, something bad happened and we should exit | |
640 | * immediately. | |
ef416fc2 | 641 | * |
642 | * Note that we at least have one listening socket open at all | |
643 | * times. | |
644 | */ | |
645 | ||
f7deaa1a | 646 | timeout = select_timeout(fds); |
ef416fc2 | 647 | |
a4d04587 | 648 | #if HAVE_LAUNCHD |
649 | /* | |
650 | * If no other work is scheduled and we're being controlled by | |
411affcf | 651 | * launchd then timeout after 'LaunchdTimeout' seconds of |
a4d04587 | 652 | * inactivity... |
653 | */ | |
654 | ||
f7deaa1a | 655 | if (timeout == 86400 && Launchd && LaunchdTimeout && !NumPolled && |
656 | (!Browsing || | |
657 | (!BrowseRemoteProtocols && | |
658 | (!NumBrowsers || !BrowseLocalProtocols || | |
659 | cupsArrayCount(Printers) == 0)))) | |
a4d04587 | 660 | { |
f7deaa1a | 661 | timeout = LaunchdTimeout; |
a4d04587 | 662 | launchd_idle_exit = 1; |
663 | } | |
664 | else | |
665 | launchd_idle_exit = 0; | |
666 | #endif /* HAVE_LAUNCHD */ | |
667 | ||
f7deaa1a | 668 | if ((fds = cupsdDoSelect(timeout)) < 0) |
ef416fc2 | 669 | { |
ef416fc2 | 670 | /* |
671 | * Got an error from select! | |
672 | */ | |
673 | ||
f7deaa1a | 674 | #ifdef HAVE_DNSSD |
675 | cupsd_printer_t *p; /* Current printer */ | |
676 | #endif /* HAVE_DNSSD */ | |
677 | ||
678 | ||
679 | if (errno == EINTR) /* Just interrupted by a signal */ | |
ef416fc2 | 680 | continue; |
681 | ||
682 | /* | |
683 | * Log all sorts of debug info to help track down the problem. | |
684 | */ | |
685 | ||
f7deaa1a | 686 | cupsdLogMessage(CUPSD_LOG_EMERG, "cupsdDoSelect() failed - %s!", |
ef416fc2 | 687 | strerror(errno)); |
688 | ||
bd7854cb | 689 | for (i = 0, con = (cupsd_client_t *)cupsArrayFirst(Clients); |
690 | con; | |
691 | i ++, con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 692 | cupsdLogMessage(CUPSD_LOG_EMERG, |
693 | "Clients[%d] = %d, file = %d, state = %d", | |
694 | i, con->http.fd, con->file, con->http.state); | |
695 | ||
bd7854cb | 696 | for (i = 0, lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
697 | lis; | |
698 | i ++, lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
ef416fc2 | 699 | cupsdLogMessage(CUPSD_LOG_EMERG, "Listeners[%d] = %d", i, lis->fd); |
700 | ||
701 | cupsdLogMessage(CUPSD_LOG_EMERG, "BrowseSocket = %d", BrowseSocket); | |
702 | ||
923edb68 | 703 | cupsdLogMessage(CUPSD_LOG_EMERG, "CGIPipes[0] = %d", CGIPipes[0]); |
704 | ||
09ec0018 | 705 | #ifdef __APPLE__ |
706 | cupsdLogMessage(CUPSD_LOG_EMERG, "SysEventPipes[0] = %d", | |
707 | SysEventPipes[0]); | |
708 | #endif /* __APPLE__ */ | |
709 | ||
ef416fc2 | 710 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); |
711 | job; | |
712 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
713 | cupsdLogMessage(CUPSD_LOG_EMERG, "Jobs[%d] = %d < [%d %d] > [%d %d]", | |
714 | job->id, | |
715 | job->status_buffer ? job->status_buffer->fd : -1, | |
716 | job->print_pipes[0], job->print_pipes[1], | |
717 | job->back_pipes[0], job->back_pipes[1]); | |
f7deaa1a | 718 | |
719 | #ifdef HAVE_DNSSD | |
720 | for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); | |
721 | p; | |
722 | p = (cupsd_printer_t *)cupsArrayNext(Printers)) | |
723 | cupsdLogMessage(CUPSD_LOG_EMERG, "printer[%s] %d", p->name, | |
724 | p->dnssd_ipp_fd); | |
725 | #endif /* HAVE_DNSSD */ | |
726 | ||
ef416fc2 | 727 | break; |
728 | } | |
729 | ||
730 | current_time = time(NULL); | |
731 | ||
a4d04587 | 732 | #if HAVE_LAUNCHD |
733 | /* | |
411affcf | 734 | * If no other work was scheduled and we're being controlled by launchd |
a4d04587 | 735 | * then timeout after 'LaunchdTimeout' seconds of inactivity... |
736 | */ | |
737 | ||
738 | if (!fds && launchd_idle_exit) | |
739 | { | |
740 | cupsdLogMessage(CUPSD_LOG_INFO, | |
741 | "Printer sharing is off and there are no jobs pending, " | |
742 | "will restart on demand."); | |
743 | stop_scheduler = 1; | |
744 | break; | |
745 | } | |
746 | #endif /* HAVE_LAUNCHD */ | |
747 | ||
ef416fc2 | 748 | /* |
bd7854cb | 749 | * Expire subscriptions and unload completed jobs as needed... |
ef416fc2 | 750 | */ |
751 | ||
bd7854cb | 752 | if (current_time > expire_time) |
ef416fc2 | 753 | { |
bd7854cb | 754 | if (cupsArrayCount(Subscriptions) > 0) |
755 | cupsdExpireSubscriptions(NULL, NULL); | |
756 | ||
757 | cupsdUnloadCompletedJobs(); | |
ef416fc2 | 758 | |
759 | expire_time = current_time; | |
760 | } | |
761 | ||
762 | /* | |
763 | * Update the browse list as needed... | |
764 | */ | |
765 | ||
f7deaa1a | 766 | if (Browsing) |
ef416fc2 | 767 | { |
ef416fc2 | 768 | #ifdef HAVE_LIBSLP |
b423cd4c | 769 | if ((BrowseRemoteProtocols & BROWSE_SLP) && |
ef416fc2 | 770 | BrowseSLPRefresh <= current_time) |
771 | cupsdUpdateSLPBrowse(); | |
772 | #endif /* HAVE_LIBSLP */ | |
b423cd4c | 773 | |
774 | #ifdef HAVE_LDAP | |
775 | if ((BrowseRemoteProtocols & BROWSE_LDAP) && | |
776 | BrowseLDAPRefresh <= current_time) | |
777 | cupsdUpdateLDAPBrowse(); | |
778 | #endif /* HAVE_LDAP */ | |
fa73b229 | 779 | } |
ef416fc2 | 780 | |
fa73b229 | 781 | if (Browsing && BrowseLocalProtocols && current_time > browse_time) |
782 | { | |
783 | cupsdSendBrowseList(); | |
784 | browse_time = current_time; | |
ef416fc2 | 785 | } |
786 | ||
787 | /* | |
f7deaa1a | 788 | * Update the root certificate once every 5 minutes if we have client |
789 | * connections... | |
ef416fc2 | 790 | */ |
791 | ||
f7deaa1a | 792 | if ((current_time - RootCertTime) >= RootCertDuration && RootCertDuration && |
793 | !RunUser && cupsArrayCount(Clients)) | |
794 | { | |
795 | /* | |
796 | * Update the root certificate... | |
797 | */ | |
798 | ||
799 | cupsdDeleteCert(0); | |
800 | cupsdAddCert(0, "root"); | |
801 | } | |
ef416fc2 | 802 | |
803 | /* | |
804 | * Check for new data on the client sockets... | |
805 | */ | |
806 | ||
bd7854cb | 807 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
808 | con; | |
809 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 810 | { |
811 | /* | |
f7deaa1a | 812 | * Process pending data in the input buffer... |
ef416fc2 | 813 | */ |
814 | ||
f7deaa1a | 815 | if (con->http.used) |
ef416fc2 | 816 | { |
f7deaa1a | 817 | cupsdReadClient(con); |
818 | continue; | |
ef416fc2 | 819 | } |
820 | ||
821 | /* | |
822 | * Check the activity and close old clients... | |
823 | */ | |
824 | ||
825 | activity = current_time - Timeout; | |
826 | if (con->http.activity < activity && !con->pipe_pid) | |
827 | { | |
828 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
829 | "Closing client %d after %d seconds of inactivity...", | |
830 | con->http.fd, Timeout); | |
831 | ||
832 | cupsdCloseClient(con); | |
ef416fc2 | 833 | continue; |
834 | } | |
835 | } | |
836 | ||
837 | /* | |
838 | * Update any pending multi-file documents... | |
839 | */ | |
840 | ||
841 | if ((current_time - senddoc_time) >= 10) | |
842 | { | |
843 | cupsdCheckJobs(); | |
844 | senddoc_time = current_time; | |
845 | } | |
846 | ||
ef416fc2 | 847 | /* |
848 | * Log memory usage every minute... | |
849 | */ | |
850 | ||
bd7854cb | 851 | if ((current_time - mallinfo_time) >= 60 && LogLevel >= CUPSD_LOG_DEBUG2) |
ef416fc2 | 852 | { |
4400e98d | 853 | #ifdef HAVE_MALLINFO |
ef416fc2 | 854 | struct mallinfo mem; /* Malloc information */ |
855 | ||
856 | ||
857 | mem = mallinfo(); | |
bd7854cb | 858 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
ef416fc2 | 859 | "mallinfo: arena = %d, used = %d, free = %d\n", |
860 | mem.arena, mem.usmblks + mem.uordblks, | |
861 | mem.fsmblks + mem.fordblks); | |
4400e98d | 862 | #endif /* HAVE_MALLINFO */ |
863 | ||
757d2cad | 864 | string_count = _cupsStrStatistics(&alloc_bytes, &total_bytes); |
bd7854cb | 865 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
4400e98d | 866 | "stringpool: " CUPS_LLFMT " strings, " |
867 | CUPS_LLFMT " allocated, " CUPS_LLFMT " total bytes", | |
868 | CUPS_LLCAST string_count, CUPS_LLCAST alloc_bytes, | |
869 | CUPS_LLCAST total_bytes); | |
870 | ||
ef416fc2 | 871 | mallinfo_time = current_time; |
872 | } | |
ef416fc2 | 873 | |
fa73b229 | 874 | /* |
875 | * Handle OS-specific event notification for any events that have | |
876 | * accumulated. Don't send these more than once a second... | |
877 | */ | |
878 | ||
e53920b9 | 879 | if (LastEvent) |
fa73b229 | 880 | { |
881 | #ifdef HAVE_NOTIFY_POST | |
882 | if (LastEvent & CUPSD_EVENT_PRINTER_CHANGED) | |
883 | { | |
e00b005a | 884 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 885 | "notify_post(\"com.apple.printerListChange\")"); |
886 | notify_post("com.apple.printerListChange"); | |
887 | } | |
888 | ||
889 | if (LastEvent & CUPSD_EVENT_PRINTER_STATE_CHANGED) | |
890 | { | |
e00b005a | 891 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 892 | "notify_post(\"com.apple.printerHistoryChange\")"); |
893 | notify_post("com.apple.printerHistoryChange"); | |
894 | } | |
895 | ||
896 | if (LastEvent & (CUPSD_EVENT_JOB_STATE_CHANGED | | |
897 | CUPSD_EVENT_JOB_CONFIG_CHANGED | | |
898 | CUPSD_EVENT_JOB_PROGRESS)) | |
899 | { | |
e00b005a | 900 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 901 | "notify_post(\"com.apple.jobChange\")"); |
902 | notify_post("com.apple.jobChange"); | |
903 | } | |
904 | #endif /* HAVE_NOTIFY_POST */ | |
905 | ||
906 | /* | |
e53920b9 | 907 | * Reset the accumulated events... |
fa73b229 | 908 | */ |
909 | ||
fa73b229 | 910 | LastEvent = CUPSD_EVENT_NONE; |
911 | } | |
ef416fc2 | 912 | } |
913 | ||
914 | /* | |
915 | * Log a message based on what happened... | |
916 | */ | |
917 | ||
918 | if (stop_scheduler) | |
919 | cupsdLogMessage(CUPSD_LOG_INFO, "Scheduler shutting down normally."); | |
920 | else | |
921 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
922 | "Scheduler shutting down due to program error."); | |
923 | ||
924 | /* | |
925 | * Close all network clients and stop all jobs... | |
926 | */ | |
927 | ||
928 | cupsdStopServer(); | |
929 | ||
bd7854cb | 930 | cupsdFreeAllJobs(); |
ef416fc2 | 931 | |
e1d6a774 | 932 | #ifdef __APPLE__ |
09ec0018 | 933 | cupsdStopSystemMonitor(); |
e1d6a774 | 934 | #endif /* __APPLE__ */ |
09ec0018 | 935 | |
a4d04587 | 936 | #ifdef HAVE_LAUNCHD |
937 | /* | |
b94498cf | 938 | * Update the launchd KeepAlive file as needed... |
a4d04587 | 939 | */ |
940 | ||
f7deaa1a | 941 | if (Launchd) |
f7deaa1a | 942 | launchd_checkout(); |
b94498cf | 943 | #endif /* HAVE_LAUNCHD */ |
411affcf | 944 | |
b94498cf | 945 | #ifdef __APPLE__ |
946 | #ifdef HAVE_DLFCN_H | |
947 | /* | |
948 | * Unload Print Service quota enforcement library (X Server only) | |
949 | */ | |
411affcf | 950 | |
b94498cf | 951 | PSQUpdateQuotaProc = NULL; |
952 | if (PSQLibRef) | |
953 | { | |
954 | dlclose(PSQLibRef); | |
955 | PSQLibRef = NULL; | |
f7deaa1a | 956 | } |
b94498cf | 957 | #endif /* HAVE_DLFCN_H */ |
958 | #endif /* __APPLE__ */ | |
a4d04587 | 959 | |
ef416fc2 | 960 | #ifdef __sgi |
961 | /* | |
962 | * Remove the fake IRIX lpsched lock file, but only if the existing | |
963 | * file is not a FIFO which indicates that the real IRIX lpsched is | |
964 | * running... | |
965 | */ | |
966 | ||
967 | if (!stat("/var/spool/lp/FIFO", &statbuf)) | |
968 | if (!S_ISFIFO(statbuf.st_mode)) | |
969 | unlink("/var/spool/lp/SCHEDLOCK"); | |
970 | #endif /* __sgi */ | |
971 | ||
f7deaa1a | 972 | cupsdStopSelect(); |
ef416fc2 | 973 | |
974 | return (!stop_scheduler); | |
975 | } | |
976 | ||
977 | ||
978 | /* | |
979 | * 'cupsdClosePipe()' - Close a pipe as necessary. | |
980 | */ | |
981 | ||
982 | void | |
983 | cupsdClosePipe(int *fds) /* I - Pipe file descriptors (2) */ | |
984 | { | |
985 | /* | |
986 | * Close file descriptors as needed... | |
987 | */ | |
988 | ||
989 | if (fds[0] >= 0) | |
990 | { | |
991 | close(fds[0]); | |
992 | fds[0] = -1; | |
993 | } | |
994 | ||
995 | if (fds[1] >= 0) | |
996 | { | |
997 | close(fds[1]); | |
998 | fds[1] = -1; | |
999 | } | |
1000 | } | |
1001 | ||
1002 | ||
1003 | /* | |
1004 | * 'cupsdOpenPipe()' - Create a pipe which is closed on exec. | |
1005 | */ | |
1006 | ||
1007 | int /* O - 0 on success, -1 on error */ | |
1008 | cupsdOpenPipe(int *fds) /* O - Pipe file descriptors (2) */ | |
1009 | { | |
1010 | /* | |
1011 | * Create the pipe... | |
1012 | */ | |
1013 | ||
1014 | if (pipe(fds)) | |
e1d6a774 | 1015 | { |
1016 | fds[0] = -1; | |
1017 | fds[1] = -1; | |
1018 | ||
ef416fc2 | 1019 | return (-1); |
e1d6a774 | 1020 | } |
ef416fc2 | 1021 | |
1022 | /* | |
1023 | * Set the "close on exec" flag on each end of the pipe... | |
1024 | */ | |
1025 | ||
1026 | if (fcntl(fds[0], F_SETFD, fcntl(fds[0], F_GETFD) | FD_CLOEXEC)) | |
1027 | { | |
1028 | close(fds[0]); | |
1029 | close(fds[1]); | |
e1d6a774 | 1030 | |
1031 | fds[0] = -1; | |
1032 | fds[1] = -1; | |
1033 | ||
ef416fc2 | 1034 | return (-1); |
1035 | } | |
1036 | ||
1037 | if (fcntl(fds[1], F_SETFD, fcntl(fds[1], F_GETFD) | FD_CLOEXEC)) | |
1038 | { | |
1039 | close(fds[0]); | |
1040 | close(fds[1]); | |
e1d6a774 | 1041 | |
1042 | fds[0] = -1; | |
1043 | fds[1] = -1; | |
1044 | ||
ef416fc2 | 1045 | return (-1); |
1046 | } | |
1047 | ||
1048 | /* | |
1049 | * Return 0 indicating success... | |
1050 | */ | |
1051 | ||
1052 | return (0); | |
1053 | } | |
1054 | ||
1055 | ||
ef416fc2 | 1056 | /* |
1057 | * 'cupsdClearString()' - Clear a string. | |
1058 | */ | |
1059 | ||
1060 | void | |
1061 | cupsdClearString(char **s) /* O - String value */ | |
1062 | { | |
1063 | if (s && *s) | |
1064 | { | |
e53920b9 | 1065 | _cupsStrFree(*s); |
ef416fc2 | 1066 | *s = NULL; |
1067 | } | |
1068 | } | |
1069 | ||
1070 | ||
1071 | /* | |
1072 | * 'cupsdHoldSignals()' - Hold child and termination signals. | |
1073 | */ | |
1074 | ||
1075 | void | |
1076 | cupsdHoldSignals(void) | |
1077 | { | |
1078 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
1079 | sigset_t newmask; /* New POSIX signal mask */ | |
1080 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
1081 | ||
1082 | ||
1083 | holdcount ++; | |
1084 | if (holdcount > 1) | |
1085 | return; | |
1086 | ||
1087 | #ifdef HAVE_SIGSET | |
1088 | sighold(SIGTERM); | |
1089 | sighold(SIGCHLD); | |
1090 | #elif defined(HAVE_SIGACTION) | |
1091 | sigemptyset(&newmask); | |
1092 | sigaddset(&newmask, SIGTERM); | |
1093 | sigaddset(&newmask, SIGCHLD); | |
1094 | sigprocmask(SIG_BLOCK, &newmask, &holdmask); | |
1095 | #endif /* HAVE_SIGSET */ | |
1096 | } | |
1097 | ||
1098 | ||
ef416fc2 | 1099 | /* |
1100 | * 'cupsdReleaseSignals()' - Release signals for delivery. | |
1101 | */ | |
1102 | ||
1103 | void | |
1104 | cupsdReleaseSignals(void) | |
1105 | { | |
1106 | holdcount --; | |
1107 | if (holdcount > 0) | |
1108 | return; | |
1109 | ||
1110 | #ifdef HAVE_SIGSET | |
1111 | sigrelse(SIGTERM); | |
1112 | sigrelse(SIGCHLD); | |
1113 | #elif defined(HAVE_SIGACTION) | |
1114 | sigprocmask(SIG_SETMASK, &holdmask, NULL); | |
1115 | #endif /* HAVE_SIGSET */ | |
1116 | } | |
1117 | ||
1118 | ||
1119 | /* | |
1120 | * 'cupsdSetString()' - Set a string value. | |
1121 | */ | |
1122 | ||
1123 | void | |
1124 | cupsdSetString(char **s, /* O - New string */ | |
1125 | const char *v) /* I - String value */ | |
1126 | { | |
1127 | if (!s || *s == v) | |
1128 | return; | |
1129 | ||
1130 | if (*s) | |
e53920b9 | 1131 | _cupsStrFree(*s); |
ef416fc2 | 1132 | |
1133 | if (v) | |
e53920b9 | 1134 | *s = _cupsStrAlloc(v); |
ef416fc2 | 1135 | else |
1136 | *s = NULL; | |
1137 | } | |
1138 | ||
1139 | ||
1140 | /* | |
1141 | * 'cupsdSetStringf()' - Set a formatted string value. | |
1142 | */ | |
1143 | ||
1144 | void | |
1145 | cupsdSetStringf(char **s, /* O - New string */ | |
1146 | const char *f, /* I - Printf-style format string */ | |
1147 | ...) /* I - Additional args as needed */ | |
1148 | { | |
1149 | char v[4096]; /* Formatting string value */ | |
1150 | va_list ap; /* Argument pointer */ | |
1151 | char *olds; /* Old string */ | |
1152 | ||
1153 | ||
1154 | if (!s) | |
1155 | return; | |
1156 | ||
1157 | olds = *s; | |
1158 | ||
1159 | if (f) | |
1160 | { | |
1161 | va_start(ap, f); | |
1162 | vsnprintf(v, sizeof(v), f, ap); | |
1163 | va_end(ap); | |
1164 | ||
e53920b9 | 1165 | *s = _cupsStrAlloc(v); |
ef416fc2 | 1166 | } |
1167 | else | |
1168 | *s = NULL; | |
1169 | ||
1170 | if (olds) | |
e53920b9 | 1171 | _cupsStrFree(olds); |
ef416fc2 | 1172 | } |
1173 | ||
1174 | ||
a4d04587 | 1175 | #ifdef HAVE_LAUNCHD |
1176 | /* | |
1177 | * 'launchd_checkin()' - Check-in with launchd and collect the listening fds. | |
1178 | */ | |
1179 | ||
1180 | static void | |
1181 | launchd_checkin(void) | |
1182 | { | |
1183 | int i, /* Looping var */ | |
bd7854cb | 1184 | count, /* Numebr of listeners */ |
a4d04587 | 1185 | portnum; /* Port number */ |
1186 | launch_data_t ld_msg, /* Launch data message */ | |
1187 | ld_resp, /* Launch data response */ | |
1188 | ld_array, /* Launch data array */ | |
1189 | ld_sockets, /* Launch data sockets dictionary */ | |
a4d04587 | 1190 | tmp; /* Launch data */ |
1191 | cupsd_listener_t *lis; /* Listeners array */ | |
1192 | http_addr_t addr; /* Address variable */ | |
1193 | socklen_t addrlen; /* Length of address */ | |
f7deaa1a | 1194 | int fd; /* File descriptor */ |
1195 | char s[256]; /* String addresss */ | |
a4d04587 | 1196 | |
1197 | ||
1198 | cupsdLogMessage(CUPSD_LOG_DEBUG, "launchd_checkin: pid=%d", (int)getpid()); | |
1199 | ||
1200 | /* | |
1201 | * Check-in with launchd... | |
1202 | */ | |
1203 | ||
1204 | ld_msg = launch_data_new_string(LAUNCH_KEY_CHECKIN); | |
1205 | if ((ld_resp = launch_msg(ld_msg)) == NULL) | |
1206 | { | |
bd7854cb | 1207 | cupsdLogMessage(CUPSD_LOG_ERROR, |
a4d04587 | 1208 | "launchd_checkin: launch_msg(\"" LAUNCH_KEY_CHECKIN |
1209 | "\") IPC failure"); | |
1210 | exit(EXIT_FAILURE); | |
1211 | } | |
bd7854cb | 1212 | |
a4d04587 | 1213 | if (launch_data_get_type(ld_resp) == LAUNCH_DATA_ERRNO) |
1214 | { | |
1215 | errno = launch_data_get_errno(ld_resp); | |
1216 | cupsdLogMessage(CUPSD_LOG_ERROR, "launchd_checkin: Check-in failed: %s", | |
1217 | strerror(errno)); | |
1218 | exit(EXIT_FAILURE); | |
1219 | } | |
1220 | ||
a4d04587 | 1221 | /* |
1222 | * Get the sockets dictionary... | |
1223 | */ | |
1224 | ||
1225 | if (!(ld_sockets = launch_data_dict_lookup(ld_resp, LAUNCH_JOBKEY_SOCKETS))) | |
1226 | { | |
1227 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1228 | "launchd_checkin: No sockets found to answer requests on!"); | |
1229 | exit(EXIT_FAILURE); | |
1230 | } | |
bd7854cb | 1231 | |
a4d04587 | 1232 | /* |
1233 | * Get the array of listener sockets... | |
1234 | */ | |
1235 | ||
1236 | if (!(ld_array = launch_data_dict_lookup(ld_sockets, "Listeners"))) | |
1237 | { | |
1238 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1239 | "launchd_checkin: No sockets found to answer requests on!"); | |
1240 | exit(EXIT_FAILURE); | |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | * Add listening fd(s) to the Listener array... | |
1245 | */ | |
1246 | ||
1247 | if (launch_data_get_type(ld_array) == LAUNCH_DATA_ARRAY) | |
1248 | { | |
f7deaa1a | 1249 | count = launch_data_array_get_count(ld_array); |
bd7854cb | 1250 | |
1251 | for (i = 0; i < count; i ++) | |
a4d04587 | 1252 | { |
1253 | /* | |
f7deaa1a | 1254 | * Get the launchd file descriptor and address... |
a4d04587 | 1255 | */ |
bd7854cb | 1256 | |
f7deaa1a | 1257 | tmp = launch_data_array_get_index(ld_array, i); |
1258 | fd = launch_data_get_fd(tmp); | |
1259 | addrlen = sizeof(addr); | |
1260 | ||
1261 | if (getsockname(fd, (struct sockaddr *)&addr, &addrlen)) | |
bd7854cb | 1262 | { |
1263 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
f7deaa1a | 1264 | "launchd_checkin: Unable to get local address - %s", |
1265 | strerror(errno)); | |
1266 | continue; | |
bd7854cb | 1267 | } |
1268 | ||
f7deaa1a | 1269 | /* |
1270 | * Try to match the launchd socket address to one of the listeners... | |
1271 | */ | |
bd7854cb | 1272 | |
f7deaa1a | 1273 | for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
1274 | lis; | |
1275 | lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
1276 | if (httpAddrEqual(&lis->address, &addr)) | |
1277 | break; | |
1278 | ||
1279 | /* | |
1280 | * Add a new listener If there's no match... | |
1281 | */ | |
a4d04587 | 1282 | |
f7deaa1a | 1283 | if (lis) |
a4d04587 | 1284 | { |
f7deaa1a | 1285 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
1286 | "launchd_checkin: Matched existing listener %s with fd %d...", | |
1287 | httpAddrString(&(lis->address), s, sizeof(s)), fd); | |
1288 | } | |
1289 | else | |
1290 | { | |
1291 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1292 | "launchd_checkin: Adding new listener %s with fd %d...", | |
1293 | httpAddrString(&addr, s, sizeof(s)), fd); | |
1294 | ||
1295 | if ((lis = calloc(1, sizeof(cupsd_listener_t))) == NULL) | |
1296 | { | |
1297 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1298 | "launchd_checkin: Unable to allocate listener - %s.", | |
1299 | strerror(errno)); | |
1300 | exit(EXIT_FAILURE); | |
1301 | } | |
1302 | ||
1303 | cupsArrayAdd(Listeners, lis); | |
1304 | ||
1305 | memcpy(&lis->address, &addr, sizeof(lis->address)); | |
a4d04587 | 1306 | } |
bd7854cb | 1307 | |
f7deaa1a | 1308 | lis->fd = fd; |
1309 | ||
a4d04587 | 1310 | # ifdef HAVE_SSL |
1311 | portnum = 0; | |
bd7854cb | 1312 | |
a4d04587 | 1313 | # ifdef AF_INET6 |
f7deaa1a | 1314 | if (lis->address.addr.sa_family == AF_INET6) |
1315 | portnum = ntohs(lis->address.ipv6.sin6_port); | |
a4d04587 | 1316 | else |
1317 | # endif /* AF_INET6 */ | |
f7deaa1a | 1318 | if (lis->address.addr.sa_family == AF_INET) |
1319 | portnum = ntohs(lis->address.ipv4.sin_port); | |
a4d04587 | 1320 | |
1321 | if (portnum == 443) | |
1322 | lis->encryption = HTTP_ENCRYPT_ALWAYS; | |
1323 | # endif /* HAVE_SSL */ | |
1324 | } | |
1325 | } | |
1326 | ||
a4d04587 | 1327 | launch_data_free(ld_msg); |
1328 | launch_data_free(ld_resp); | |
1329 | } | |
1330 | ||
1331 | ||
f7deaa1a | 1332 | /* |
1333 | * 'launchd_checkout()' - Update the launchd KeepAlive file as needed. | |
1334 | */ | |
1335 | ||
1336 | static void | |
1337 | launchd_checkout(void) | |
1338 | { | |
1339 | int fd; /* File descriptor */ | |
1340 | ||
1341 | ||
1342 | /* | |
1343 | * Create or remove the launchd KeepAlive file based on whether | |
1344 | * there are active jobs, polling, browsing for remote printers or | |
1345 | * shared printers to advertise... | |
1346 | */ | |
1347 | ||
1348 | if ((cupsArrayCount(ActiveJobs) || NumPolled || | |
1349 | (Browsing && | |
1350 | (BrowseRemoteProtocols || | |
1351 | (BrowseLocalProtocols && NumBrowsers && cupsArrayCount(Printers)))))) | |
1352 | { | |
1353 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1354 | "Creating launchd keepalive file \"" CUPS_KEEPALIVE "\"..."); | |
1355 | ||
1356 | if ((fd = open(CUPS_KEEPALIVE, O_RDONLY | O_CREAT | O_EXCL, S_IRUSR)) >= 0) | |
1357 | close(fd); | |
1358 | } | |
1359 | else | |
1360 | { | |
1361 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1362 | "Removing launchd keepalive file \"" CUPS_KEEPALIVE "\"..."); | |
1363 | ||
1364 | unlink(CUPS_KEEPALIVE); | |
1365 | } | |
1366 | } | |
1367 | ||
a4d04587 | 1368 | #endif /* HAVE_LAUNCHD */ |
1369 | ||
1370 | ||
ef416fc2 | 1371 | /* |
1372 | * 'parent_handler()' - Catch USR1/CHLD signals... | |
1373 | */ | |
1374 | ||
1375 | static void | |
1376 | parent_handler(int sig) /* I - Signal */ | |
1377 | { | |
1378 | /* | |
1379 | * Store the signal we got from the OS and return... | |
1380 | */ | |
1381 | ||
1382 | parent_signal = sig; | |
1383 | } | |
1384 | ||
1385 | ||
1386 | /* | |
1387 | * 'process_children()' - Process all dead children... | |
1388 | */ | |
1389 | ||
1390 | static void | |
1391 | process_children(void) | |
1392 | { | |
1393 | int status; /* Exit status of child */ | |
1394 | int pid; /* Process ID of child */ | |
1395 | cupsd_job_t *job; /* Current job */ | |
1396 | int i; /* Looping var */ | |
e00b005a | 1397 | char name[1024]; /* Process name */ |
ef416fc2 | 1398 | |
1399 | ||
1400 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "process_children()"); | |
1401 | ||
1402 | /* | |
1403 | * Reset the dead_children flag... | |
1404 | */ | |
1405 | ||
1406 | dead_children = 0; | |
1407 | ||
1408 | /* | |
1409 | * Collect the exit status of some children... | |
1410 | */ | |
1411 | ||
1412 | #ifdef HAVE_WAITPID | |
1413 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) | |
1414 | #elif defined(HAVE_WAIT3) | |
1415 | while ((pid = wait3(&status, WNOHANG, NULL)) > 0) | |
1416 | #else | |
1417 | if ((pid = wait(&status)) > 0) | |
1418 | #endif /* HAVE_WAITPID */ | |
1419 | { | |
ef416fc2 | 1420 | /* |
d09495fa | 1421 | * Ignore SIGTERM errors - that comes when a job is canceled... |
ef416fc2 | 1422 | */ |
1423 | ||
e00b005a | 1424 | cupsdFinishProcess(pid, name, sizeof(name)); |
1425 | ||
ef416fc2 | 1426 | if (status == SIGTERM) |
1427 | status = 0; | |
1428 | ||
1429 | if (status) | |
1430 | { | |
1431 | if (WIFEXITED(status)) | |
e00b005a | 1432 | cupsdLogMessage(CUPSD_LOG_ERROR, "PID %d (%s) stopped with status %d!", |
1433 | pid, name, WEXITSTATUS(status)); | |
ef416fc2 | 1434 | else |
e00b005a | 1435 | cupsdLogMessage(CUPSD_LOG_ERROR, "PID %d (%s) crashed on signal %d!", |
1436 | pid, name, WTERMSIG(status)); | |
ef416fc2 | 1437 | |
1438 | if (LogLevel < CUPSD_LOG_DEBUG) | |
1439 | cupsdLogMessage(CUPSD_LOG_INFO, | |
bd7854cb | 1440 | "Hint: Try setting the LogLevel to \"debug\" to find " |
1441 | "out more."); | |
ef416fc2 | 1442 | } |
1443 | else | |
e00b005a | 1444 | cupsdLogMessage(CUPSD_LOG_DEBUG, "PID %d (%s) exited with no errors.", |
1445 | pid, name); | |
ef416fc2 | 1446 | |
1447 | /* | |
1448 | * Delete certificates for CGI processes... | |
1449 | */ | |
1450 | ||
1451 | if (pid) | |
1452 | cupsdDeleteCert(pid); | |
1453 | ||
1454 | /* | |
1455 | * Lookup the PID in the jobs list... | |
1456 | */ | |
1457 | ||
1458 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
1459 | job; | |
1460 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
bd7854cb | 1461 | if (job->state_value == IPP_JOB_PROCESSING) |
ef416fc2 | 1462 | { |
1463 | for (i = 0; job->filters[i]; i ++) | |
1464 | if (job->filters[i] == pid) | |
1465 | break; | |
1466 | ||
1467 | if (job->filters[i] || job->backend == pid) | |
1468 | { | |
1469 | /* | |
1470 | * OK, this process has gone away; what's left? | |
1471 | */ | |
1472 | ||
1473 | if (job->filters[i]) | |
1474 | job->filters[i] = -pid; | |
1475 | else | |
1476 | job->backend = -pid; | |
1477 | ||
1478 | if (status && job->status >= 0) | |
1479 | { | |
1480 | /* | |
1481 | * An error occurred; save the exit status so we know to stop | |
1482 | * the printer or cancel the job when all of the filters finish... | |
1483 | * | |
1484 | * A negative status indicates that the backend failed and the | |
1485 | * printer needs to be stopped. | |
1486 | */ | |
1487 | ||
1488 | if (job->filters[i]) | |
1489 | job->status = status; /* Filter failed */ | |
1490 | else | |
1491 | job->status = -status; /* Backend failed */ | |
e00b005a | 1492 | |
1493 | if (job->printer && !(job->printer->type & CUPS_PRINTER_FAX)) | |
1494 | { | |
1495 | snprintf(job->printer->state_message, | |
1496 | sizeof(job->printer->state_message), "%s failed", name); | |
1497 | cupsdAddPrinterHistory(job->printer); | |
1498 | } | |
ef416fc2 | 1499 | } |
1500 | ||
1501 | /* | |
1502 | * If this is not the last file in a job, see if all of the | |
1503 | * filters are done, and if so move to the next file. | |
1504 | */ | |
1505 | ||
1506 | if (job->current_file < job->num_files) | |
1507 | { | |
1508 | for (i = 0; job->filters[i] < 0; i ++); | |
1509 | ||
1510 | if (!job->filters[i]) | |
1511 | { | |
1512 | /* | |
1513 | * Process the next file... | |
1514 | */ | |
1515 | ||
1516 | cupsdFinishJob(job); | |
1517 | } | |
1518 | } | |
1519 | break; | |
1520 | } | |
1521 | } | |
1522 | } | |
1523 | } | |
1524 | ||
1525 | ||
1526 | /* | |
1527 | * 'sigchld_handler()' - Handle 'child' signals from old processes. | |
1528 | */ | |
1529 | ||
1530 | static void | |
1531 | sigchld_handler(int sig) /* I - Signal number */ | |
1532 | { | |
1533 | (void)sig; | |
1534 | ||
1535 | /* | |
1536 | * Flag that we have dead children... | |
1537 | */ | |
1538 | ||
1539 | dead_children = 1; | |
1540 | ||
1541 | /* | |
1542 | * Reset the signal handler as needed... | |
1543 | */ | |
1544 | ||
1545 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1546 | signal(SIGCLD, sigchld_handler); | |
1547 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1548 | } | |
1549 | ||
1550 | ||
1551 | /* | |
1552 | * 'sighup_handler()' - Handle 'hangup' signals to reconfigure the scheduler. | |
1553 | */ | |
1554 | ||
1555 | static void | |
1556 | sighup_handler(int sig) /* I - Signal number */ | |
1557 | { | |
1558 | (void)sig; | |
1559 | ||
1560 | NeedReload = RELOAD_ALL; | |
1561 | ReloadTime = time(NULL); | |
1562 | ||
1563 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1564 | signal(SIGHUP, sighup_handler); | |
1565 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1566 | } | |
1567 | ||
1568 | ||
1569 | /* | |
1570 | * 'sigterm_handler()' - Handle 'terminate' signals that stop the scheduler. | |
1571 | */ | |
1572 | ||
1573 | static void | |
1574 | sigterm_handler(int sig) /* I - Signal */ | |
1575 | { | |
1576 | (void)sig; /* remove compiler warnings... */ | |
1577 | ||
1578 | /* | |
1579 | * Flag that we should stop and return... | |
1580 | */ | |
1581 | ||
1582 | stop_scheduler = 1; | |
1583 | } | |
1584 | ||
1585 | ||
1586 | /* | |
1587 | * 'select_timeout()' - Calculate the select timeout value. | |
1588 | * | |
1589 | */ | |
1590 | ||
1591 | static long /* O - Number of seconds */ | |
bd7854cb | 1592 | select_timeout(int fds) /* I - Number of descriptors returned */ |
ef416fc2 | 1593 | { |
ef416fc2 | 1594 | long timeout; /* Timeout for select */ |
1595 | time_t now; /* Current time */ | |
1596 | cupsd_client_t *con; /* Client information */ | |
1597 | cupsd_printer_t *p; /* Printer information */ | |
1598 | cupsd_job_t *job; /* Job information */ | |
1599 | cupsd_subscription_t *sub; /* Subscription information */ | |
1600 | const char *why; /* Debugging aid */ | |
1601 | ||
1602 | ||
1603 | /* | |
1604 | * Check to see if any of the clients have pending data to be | |
1605 | * processed; if so, the timeout should be 0... | |
1606 | */ | |
1607 | ||
bd7854cb | 1608 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
1609 | con; | |
1610 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 1611 | if (con->http.used > 0) |
1612 | return (0); | |
1613 | ||
1614 | /* | |
f7deaa1a | 1615 | * If select has been active in the last second (fds > 0) or we have |
ef416fc2 | 1616 | * many resources in use then don't bother trying to optimize the |
1617 | * timeout, just make it 1 second. | |
1618 | */ | |
1619 | ||
f7deaa1a | 1620 | if (fds > 0 || cupsArrayCount(Clients) > 50) |
ef416fc2 | 1621 | return (1); |
1622 | ||
1623 | /* | |
1624 | * Otherwise, check all of the possible events that we need to wake for... | |
1625 | */ | |
1626 | ||
1627 | now = time(NULL); | |
1628 | timeout = now + 86400; /* 86400 == 1 day */ | |
1629 | why = "do nothing"; | |
1630 | ||
1631 | /* | |
1632 | * Check the activity and close old clients... | |
1633 | */ | |
1634 | ||
bd7854cb | 1635 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
1636 | con; | |
1637 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 1638 | if ((con->http.activity + Timeout) < timeout) |
1639 | { | |
1640 | timeout = con->http.activity + Timeout; | |
1641 | why = "timeout a client connection"; | |
1642 | } | |
1643 | ||
1644 | /* | |
1645 | * Update the browse list as needed... | |
1646 | */ | |
1647 | ||
1648 | if (Browsing && BrowseLocalProtocols) | |
1649 | { | |
1650 | #ifdef HAVE_LIBSLP | |
1651 | if ((BrowseLocalProtocols & BROWSE_SLP) && (BrowseSLPRefresh < timeout)) | |
1652 | { | |
1653 | timeout = BrowseSLPRefresh; | |
1654 | why = "update SLP browsing"; | |
1655 | } | |
1656 | #endif /* HAVE_LIBSLP */ | |
1657 | ||
b423cd4c | 1658 | #ifdef HAVE_LDAP |
1659 | if ((BrowseLocalProtocols & BROWSE_LDAP) && (BrowseLDAPRefresh < timeout)) | |
1660 | { | |
1661 | timeout = BrowseLDAPRefresh; | |
1662 | why = "update LDAP browsing"; | |
1663 | } | |
1664 | #endif /* HAVE_LDAP */ | |
1665 | ||
f7deaa1a | 1666 | if ((BrowseLocalProtocols & BROWSE_CUPS) && NumBrowsers) |
ef416fc2 | 1667 | { |
1668 | for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); | |
1669 | p; | |
1670 | p = (cupsd_printer_t *)cupsArrayNext(Printers)) | |
1671 | { | |
1672 | if (p->type & CUPS_PRINTER_REMOTE) | |
1673 | { | |
1674 | if ((p->browse_time + BrowseTimeout) < timeout) | |
1675 | { | |
1676 | timeout = p->browse_time + BrowseTimeout; | |
1677 | why = "browse timeout a printer"; | |
1678 | } | |
1679 | } | |
f7deaa1a | 1680 | else if (p->shared && !(p->type & CUPS_PRINTER_IMPLICIT)) |
ef416fc2 | 1681 | { |
1682 | if (BrowseInterval && (p->browse_time + BrowseInterval) < timeout) | |
1683 | { | |
1684 | timeout = p->browse_time + BrowseInterval; | |
1685 | why = "send browse update"; | |
1686 | } | |
1687 | } | |
1688 | } | |
1689 | } | |
1690 | } | |
1691 | ||
1692 | /* | |
1693 | * Check for any active jobs... | |
1694 | */ | |
1695 | ||
1696 | if (timeout > (now + 10) && ActiveJobs) | |
1697 | { | |
1698 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
1699 | job; | |
1700 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
bd7854cb | 1701 | if (job->state_value <= IPP_JOB_PROCESSING) |
ef416fc2 | 1702 | { |
1703 | timeout = now + 10; | |
1704 | why = "process active jobs"; | |
1705 | break; | |
1706 | } | |
1707 | } | |
1708 | ||
1709 | #ifdef HAVE_MALLINFO | |
1710 | /* | |
1711 | * Log memory usage every minute... | |
1712 | */ | |
1713 | ||
1714 | if (LogLevel >= CUPSD_LOG_DEBUG && (mallinfo_time + 60) < timeout) | |
1715 | { | |
1716 | timeout = mallinfo_time + 60; | |
1717 | why = "display memory usage"; | |
1718 | } | |
1719 | #endif /* HAVE_MALLINFO */ | |
1720 | ||
ef416fc2 | 1721 | /* |
1722 | * Expire subscriptions as needed... | |
1723 | */ | |
1724 | ||
1725 | for (sub = (cupsd_subscription_t *)cupsArrayFirst(Subscriptions); | |
1726 | sub; | |
1727 | sub = (cupsd_subscription_t *)cupsArrayNext(Subscriptions)) | |
bd7854cb | 1728 | if (!sub->job && sub->expire && sub->expire < timeout) |
ef416fc2 | 1729 | { |
1730 | timeout = sub->expire; | |
1731 | why = "expire subscription"; | |
1732 | } | |
1733 | ||
1734 | /* | |
1735 | * Adjust from absolute to relative time. If p->browse_time above | |
1736 | * was 0 then we can end up with a negative value here, so check. | |
1737 | * We add 1 second to the timeout since events occur after the | |
1738 | * timeout expires, and limit the timeout to 86400 seconds (1 day) | |
1739 | * to avoid select() timeout limits present on some operating | |
1740 | * systems... | |
1741 | */ | |
1742 | ||
1743 | timeout = timeout - now + 1; | |
1744 | ||
1745 | if (timeout < 1) | |
1746 | timeout = 1; | |
1747 | else if (timeout > 86400) | |
1748 | timeout = 86400; | |
1749 | ||
1750 | /* | |
1751 | * Log and return the timeout value... | |
1752 | */ | |
1753 | ||
f7deaa1a | 1754 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "select_timeout(%d): %ld seconds to %s", |
1755 | fds, timeout, why); | |
ef416fc2 | 1756 | |
1757 | return (timeout); | |
1758 | } | |
1759 | ||
1760 | ||
1761 | /* | |
1762 | * 'usage()' - Show scheduler usage. | |
1763 | */ | |
1764 | ||
1765 | static void | |
a4d04587 | 1766 | usage(int status) /* O - Exit status */ |
ef416fc2 | 1767 | { |
a4d04587 | 1768 | _cupsLangPuts(status ? stderr : stdout, |
1769 | _("Usage: cupsd [-c config-file] [-f] [-F] [-h] [-l]\n" | |
1770 | "\n" | |
1771 | "-c config-file Load alternate configuration file\n" | |
1772 | "-f Run in the foreground\n" | |
1773 | "-F Run in the foreground but detach\n" | |
1774 | "-h Show this usage message\n" | |
1775 | "-l Run cupsd from launchd(8)\n")); | |
1776 | exit(status); | |
ef416fc2 | 1777 | } |
1778 | ||
1779 | ||
1780 | /* | |
b94498cf | 1781 | * End of "$Id: main.c 6493 2007-04-30 19:33:31Z mike $". |
ef416fc2 | 1782 | */ |