2 * Main loop for the CUPS scheduler.
4 * Copyright © 2007-2018 by Apple Inc.
5 * Copyright © 1997-2007 by Easy Software Products, all rights reserved.
7 * Licensed under Apache License v2.0. See the file "LICENSE" for more
12 * Include necessary headers...
17 #include <sys/resource.h>
20 # include <pthread/qos.h>
21 #endif /* __APPLE__ */
24 #elif defined(HAVE_SYSTEMD_SD_JOURNAL_H)
25 # define SD_JOURNAL_SUPPRESS_LOCATION
26 # include <systemd/sd-journal.h>
27 #endif /* HAVE_ASL_H */
33 #endif /* HAVE_LAUNCH_H */
36 # include <systemd/sd-daemon.h>
37 #endif /* HAVE_SYSTEMD */
40 # define CUPS_KEEPALIVE CUPS_CACHEDIR "/org.cups.cupsd"
41 /* Name of the KeepAlive file */
42 #endif /* HAVE_ONDEMAND */
44 #if defined(HAVE_MALLOC_H) && defined(HAVE_MALLINFO)
46 #endif /* HAVE_MALLOC_H && HAVE_MALLINFO */
50 #endif /* HAVE_NOTIFY_H */
53 # include <dbus/dbus.h>
54 #endif /* HAVE_DBUS */
56 #ifdef HAVE_SYS_PARAM_H
57 # include <sys/param.h>
58 #endif /* HAVE_SYS_PARAM_H */
65 static void parent_handler(int sig
);
66 static void process_children(void);
67 static void sigchld_handler(int sig
);
68 static void sighup_handler(int sig
);
69 static void sigterm_handler(int sig
);
70 static long select_timeout(int fds
);
71 static void service_checkin(void);
72 static void service_checkout(int shutdown
);
73 static void usage(int status
) _CUPS_NORETURN
;
80 static int parent_signal
= 0;
81 /* Set to signal number from child */
82 static int holdcount
= 0; /* Number of times "hold" was called */
83 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
84 static sigset_t holdmask
; /* Old POSIX signal mask */
85 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */
86 static int dead_children
= 0;
88 static int stop_scheduler
= 0;
89 /* Should the scheduler stop? */
90 static time_t local_timeout
= 0;
91 /* Next local printer timeout */
95 * 'main()' - Main entry for the CUPS scheduler.
98 int /* O - Exit status */
99 main(int argc
, /* I - Number of command-line args */
100 char *argv
[]) /* I - Command-line arguments */
102 int i
; /* Looping var */
103 char *opt
; /* Option character */
104 int close_all
= 1, /* Close all file descriptors? */
105 disconnect
= 1, /* Disconnect from controlling terminal? */
106 fg
= 0, /* Run in foreground? */
108 /* Running as child process? */
110 /* Print the sandbox profile to stdout? */
111 int fds
; /* Number of ready descriptors */
112 cupsd_client_t
*con
; /* Current client */
113 cupsd_job_t
*job
; /* Current job */
114 cupsd_listener_t
*lis
; /* Current listener */
115 time_t current_time
, /* Current time */
116 activity
, /* Client activity timer */
117 senddoc_time
, /* Send-Document time */
118 expire_time
, /* Subscription expire time */
119 report_time
, /* Malloc/client/job report time */
120 event_time
; /* Last event notification time */
121 long timeout
; /* Timeout for cupsdDoSelect() */
122 struct rlimit limit
; /* Runtime limit */
123 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
124 struct sigaction action
; /* Actions for POSIX signals */
125 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */
127 int use_sysman
= 1; /* Use system management functions? */
129 time_t netif_time
= 0; /* Time since last network update */
130 #endif /* __APPLE__ */
131 #if defined(HAVE_ONDEMAND)
132 int service_idle_exit
= 0;
133 /* Idle exit on select timeout? */
134 #endif /* HAVE_ONDEMAND */
139 * Check for setuid invocation, which we do not support!
142 if (getuid() != geteuid())
144 fputs("cupsd: Cannot run as a setuid program.\n", stderr
);
147 #endif /* HAVE_GETEUID */
150 * Check for command-line arguments...
155 for (i
= 1; i
< argc
; i
++)
157 if (!strcmp(argv
[i
], "--help"))
159 else if (argv
[i
][0] == '-')
161 for (opt
= argv
[i
] + 1; *opt
!= '\0'; opt
++)
165 case 'C' : /* Run as child with config file */
170 case 'c' : /* Configuration file */
174 _cupsLangPuts(stderr
, _("cupsd: Expected config filename "
175 "after \"-c\" option."));
179 if (argv
[i
][0] == '/')
182 * Absolute directory...
185 cupsdSetString(&ConfigurationFile
, argv
[i
]);
190 * Relative directory...
193 char *current
; /* Current directory */
196 * Allocate a buffer for the current working directory to
197 * reduce run-time stack usage; this approximates the
198 * behavior of some implementations of getcwd() when they
199 * are passed a NULL pointer.
202 if ((current
= malloc(1024)) == NULL
)
204 _cupsLangPuts(stderr
,
205 _("cupsd: Unable to get current directory."));
209 if (!getcwd(current
, 1024))
211 _cupsLangPuts(stderr
,
212 _("cupsd: Unable to get current directory."));
217 cupsdSetStringf(&ConfigurationFile
, "%s/%s", current
, argv
[i
]);
222 case 'f' : /* Run in foreground... */
228 case 'F' : /* Run in foreground, but disconnect from terminal... */
233 case 'h' : /* Show usage/help */
237 case 'l' : /* Started by launchd/systemd/upstart... */
244 _cupsLangPuts(stderr
, _("cupsd: On-demand support not compiled "
245 "in, running in normal mode."));
249 #endif /* HAVE_ONDEMAND */
252 case 'p' : /* Stop immediately for profiling */
253 fputs("cupsd: -p (startup profiling) is for internal testing "
254 "use only!\n", stderr
);
261 case 'P' : /* Disable security profiles */
262 fputs("cupsd: -P (disable sandboxing) is for internal testing use only.\n", stderr
);
266 case 's' : /* Set cups-files.conf location */
270 _cupsLangPuts(stderr
, _("cupsd: Expected cups-files.conf "
271 "filename after \"-s\" option."));
275 if (argv
[i
][0] != '/')
278 * Relative filename not allowed...
281 _cupsLangPuts(stderr
, _("cupsd: Relative cups-files.conf "
282 "filename not allowed."));
286 cupsdSetString(&CupsFilesFile
, argv
[i
]);
290 case 'S' : /* Disable system management functions */
291 fputs("cupsd: -S (disable system management) for internal "
292 "testing use only!\n", stderr
);
295 #endif /* __APPLE__ */
297 case 't' : /* Test the cupsd.conf file... */
304 case 'T' : /* Print security profile */
311 default : /* Unknown option */
312 _cupsLangPrintf(stderr
, _("cupsd: Unknown option \"%c\" - "
321 _cupsLangPrintf(stderr
, _("cupsd: Unknown argument \"%s\" - aborting."),
327 if (!ConfigurationFile
)
328 cupsdSetString(&ConfigurationFile
, CUPS_SERVERROOT
"/cupsd.conf");
332 char *filename
, /* Copy of cupsd.conf filename */
333 *slash
; /* Final slash in cupsd.conf filename */
334 size_t len
; /* Size of buffer */
336 len
= strlen(ConfigurationFile
) + 15;
337 if ((filename
= malloc(len
)) == NULL
)
339 _cupsLangPrintf(stderr
,
340 _("cupsd: Unable to get path to "
341 "cups-files.conf file."));
345 strlcpy(filename
, ConfigurationFile
, len
);
346 if ((slash
= strrchr(filename
, '/')) == NULL
)
348 _cupsLangPrintf(stderr
,
349 _("cupsd: Unable to get path to "
350 "cups-files.conf file."));
354 strlcpy(slash
, "/cups-files.conf", len
- (size_t)(slash
- filename
));
355 cupsdSetString(&CupsFilesFile
, filename
);
362 * Make sure we aren't tying up any filesystems...
368 * Disconnect from the controlling terminal...
377 * Close all open files...
380 getrlimit(RLIMIT_NOFILE
, &limit
);
382 for (i
= 0; i
< (int)limit
.rlim_cur
&& i
< 1024; i
++)
386 * Redirect stdin/out/err to /dev/null...
389 if ((i
= open("/dev/null", O_RDONLY
)) != 0)
395 if ((i
= open("/dev/null", O_WRONLY
)) != 1)
401 if ((i
= open("/dev/null", O_WRONLY
)) != 2)
408 LogStderr
= cupsFileStderr();
411 * Run in the background as needed...
417 * Setup signal handlers for the parent...
420 #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
421 sigset(SIGUSR1
, parent_handler
);
422 sigset(SIGCHLD
, parent_handler
);
424 sigset(SIGHUP
, SIG_IGN
);
425 #elif defined(HAVE_SIGACTION)
426 memset(&action
, 0, sizeof(action
));
427 sigemptyset(&action
.sa_mask
);
428 sigaddset(&action
.sa_mask
, SIGUSR1
);
429 action
.sa_handler
= parent_handler
;
430 sigaction(SIGUSR1
, &action
, NULL
);
431 sigaction(SIGCHLD
, &action
, NULL
);
433 sigemptyset(&action
.sa_mask
);
434 action
.sa_handler
= SIG_IGN
;
435 sigaction(SIGHUP
, &action
, NULL
);
437 signal(SIGUSR1
, parent_handler
);
438 signal(SIGCLD
, parent_handler
);
440 signal(SIGHUP
, SIG_IGN
);
441 #endif /* HAVE_SIGSET */
446 * OK, wait for the child to startup and send us SIGUSR1 or to crash
447 * and the OS send us SIGCHLD... We also need to ignore SIGHUP which
448 * might be sent by the init script to restart the scheduler...
451 for (; parent_signal
== 0;)
454 if (parent_signal
== SIGUSR1
)
462 else if (WIFEXITED(i
))
464 fprintf(stderr
, "cupsd: Child exited with status %d\n",
470 fprintf(stderr
, "cupsd: Child exited on signal %d\n", WTERMSIG(i
));
475 #if defined(__OpenBSD__) && OpenBSD < 201211
477 * Call _thread_sys_closefrom() so the child process doesn't reset the
478 * parent's file descriptors to be blocking. This is a workaround for a
479 * limitation of userland libpthread on older versions of OpenBSD.
482 _thread_sys_closefrom(0);
483 #endif /* __OpenBSD__ && OpenBSD < 201211 */
486 * Since many system libraries create fork-unsafe data on execution of a
487 * program, we need to re-execute the background cupsd with the "-C" and "-s"
488 * options to avoid problems. Unfortunately, we also have to assume that
489 * argv[0] contains the name of the cupsd executable - there is no portable
490 * way to get the real pathname...
493 execlp(argv
[0], argv
[0], "-C", ConfigurationFile
, "-s", CupsFilesFile
, (char *)0);
498 * Let the system know we are busy while we bring up cupsd...
501 cupsdSetBusyState(1);
504 * Set the timezone info...
510 setlocale(LC_TIME
, "");
513 #ifdef HAVE_DBUS_THREADS_INIT
515 * Enable threading support for D-BUS...
518 dbus_threads_init_default();
519 #endif /* HAVE_DBUS_THREADS_INIT */
522 * Set the maximum number of files...
525 getrlimit(RLIMIT_NOFILE
, &limit
);
527 #if !defined(HAVE_POLL) && !defined(HAVE_EPOLL) && !defined(HAVE_KQUEUE)
528 if (limit
.rlim_max
> FD_SETSIZE
)
531 #endif /* !HAVE_POLL && !HAVE_EPOLL && !HAVE_KQUEUE */
533 if (limit
.rlim_max
== RLIM_INFINITY
)
536 #endif /* RLIM_INFINITY */
537 MaxFDs
= limit
.rlim_max
;
539 limit
.rlim_cur
= (rlim_t
)MaxFDs
;
541 setrlimit(RLIMIT_NOFILE
, &limit
);
546 * Read configuration...
549 if (!cupsdReadConfiguration())
551 else if (TestConfigFile
)
553 printf("\"%s\" is OK.\n", CupsFilesFile
);
554 printf("\"%s\" is OK.\n", ConfigurationFile
);
557 else if (print_profile
)
559 cups_file_t
*fp
; /* File pointer */
560 const char *profile
= cupsdCreateProfile(42, 0);
562 char line
[1024]; /* Line from file */
565 if ((fp
= cupsFileOpen(profile
, "r")) == NULL
)
567 printf("Unable to open profile file \"%s\": %s\n", profile
? profile
: "(null)", strerror(errno
));
571 while (cupsFileGets(fp
, line
, sizeof(line
)))
580 * Clean out old temp files and printer cache data.
583 if (!strncmp(TempDir
, RequestRoot
, strlen(RequestRoot
)))
584 cupsdCleanFiles(TempDir
, NULL
);
586 cupsdCleanFiles(CacheDir
, "*.ipp");
589 * If we were started on demand by launchd or systemd get the listen sockets
590 * file descriptors...
597 * Startup the server...
605 * Catch hangup and child signals and ignore broken pipes...
608 #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
609 sigset(SIGCHLD
, sigchld_handler
);
610 sigset(SIGHUP
, sighup_handler
);
611 sigset(SIGPIPE
, SIG_IGN
);
612 sigset(SIGTERM
, sigterm_handler
);
613 #elif defined(HAVE_SIGACTION)
614 memset(&action
, 0, sizeof(action
));
616 sigemptyset(&action
.sa_mask
);
617 sigaddset(&action
.sa_mask
, SIGTERM
);
618 sigaddset(&action
.sa_mask
, SIGCHLD
);
619 action
.sa_handler
= sigchld_handler
;
620 sigaction(SIGCHLD
, &action
, NULL
);
622 sigemptyset(&action
.sa_mask
);
623 sigaddset(&action
.sa_mask
, SIGHUP
);
624 action
.sa_handler
= sighup_handler
;
625 sigaction(SIGHUP
, &action
, NULL
);
627 sigemptyset(&action
.sa_mask
);
628 action
.sa_handler
= SIG_IGN
;
629 sigaction(SIGPIPE
, &action
, NULL
);
631 sigemptyset(&action
.sa_mask
);
632 sigaddset(&action
.sa_mask
, SIGTERM
);
633 sigaddset(&action
.sa_mask
, SIGCHLD
);
634 action
.sa_handler
= sigterm_handler
;
635 sigaction(SIGTERM
, &action
, NULL
);
637 signal(SIGCLD
, sigchld_handler
); /* No, SIGCLD isn't a typo... */
638 signal(SIGHUP
, sighup_handler
);
639 signal(SIGPIPE
, SIG_IGN
);
640 signal(SIGTERM
, sigterm_handler
);
641 #endif /* HAVE_SIGSET */
644 * Initialize authentication certificates...
650 * If we are running in the background, signal the parent process that
651 * we are up and running...
654 if (!fg
|| run_as_child
)
657 * Send a signal to the parent process, but only if the parent is
658 * not PID 1 (init). This avoids accidentally shutting down the
659 * system on OpenBSD if you CTRL-C the server before it is up...
662 i
= getppid(); /* Save parent PID to avoid race condition */
670 * Start power management framework...
674 cupsdStartSystemMonitor();
675 #endif /* __APPLE__ */
678 * Send server-started event...
683 cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED
, NULL
, NULL
, "Scheduler started on demand.");
685 #endif /* HAVE_ONDEMAND */
687 cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED
, NULL
, NULL
, "Scheduler started in foreground.");
689 cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED
, NULL
, NULL
, "Scheduler started in background.");
691 cupsdSetBusyState(0);
694 * Start any pending print jobs...
703 current_time
= time(NULL
);
704 event_time
= current_time
;
705 expire_time
= current_time
;
709 senddoc_time
= current_time
;
711 while (!stop_scheduler
)
714 * Check if there are dead children to handle...
721 * Check if we need to load the server configuration file...
727 * Close any idle clients...
730 if (cupsArrayCount(Clients
) > 0)
732 for (con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
734 con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
735 if (httpGetState(con
->http
) == HTTP_WAITING
)
736 cupsdCloseClient(con
);
738 con
->http
->keep_alive
= HTTP_KEEPALIVE_OFF
;
740 cupsdPauseListening();
744 * Restart if all clients are closed and all jobs finished, or
745 * if the reload timeout has elapsed...
748 if ((cupsArrayCount(Clients
) == 0 &&
749 (cupsArrayCount(PrintingJobs
) == 0 || NeedReload
!= RELOAD_ALL
)) ||
750 (time(NULL
) - ReloadTime
) >= ReloadTimeout
)
753 * Shutdown the server...
759 #endif /* HAVE_ONDEMAND */
766 * Read configuration...
769 if (!cupsdReadConfiguration())
771 #ifdef HAVE_SYSTEMD_SD_JOURNAL_H
772 sd_journal_print(LOG_ERR
, "Unable to read configuration file \"%s\" - exiting.", ConfigurationFile
);
774 syslog(LOG_LPR
, "Unable to read configuration file \'%s\' - exiting.", ConfigurationFile
);
775 #endif /* HAVE_SYSTEMD_SD_JOURNAL_H */
781 * Startup the server...
789 * Send a server-restarted event...
792 cupsdAddEvent(CUPSD_EVENT_SERVER_RESTARTED
, NULL
, NULL
,
793 "Scheduler restarted.");
798 * Check for available input or ready output. If cupsdDoSelect()
799 * returns 0 or -1, something bad happened and we should exit
802 * Note that we at least have one listening socket open at all
806 if ((timeout
= select_timeout(fds
)) > 1 && LastEvent
)
811 * If no other work is scheduled and we're being controlled by launchd,
812 * systemd, etc. then timeout after 'IdleExitTimeout' seconds of
816 if (timeout
== 86400 && OnDemand
&& IdleExitTimeout
&&
819 # endif /* HAVE_SYSTEMD */
820 !cupsArrayCount(ActiveJobs
))
822 cupsd_printer_t
*p
= NULL
; /* Current printer */
824 if (Browsing
&& BrowseLocalProtocols
)
826 for (p
= (cupsd_printer_t
*)cupsArrayFirst(Printers
); p
; p
= (cupsd_printer_t
*)cupsArrayNext(Printers
))
833 timeout
= IdleExitTimeout
;
834 service_idle_exit
= 1;
838 service_idle_exit
= 0;
839 #endif /* HAVE_ONDEMAND */
841 if ((fds
= cupsdDoSelect(timeout
)) < 0)
844 * Got an error from select!
847 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
848 cupsd_printer_t
*p
; /* Current printer */
849 #endif /* HAVE_DNSSD || HAVE_AVAHI */
851 if (errno
== EINTR
) /* Just interrupted by a signal */
855 * Log all sorts of debug info to help track down the problem.
858 cupsdLogMessage(CUPSD_LOG_EMERG
, "cupsdDoSelect() failed - %s!",
861 for (i
= 0, con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
863 i
++, con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
864 cupsdLogMessage(CUPSD_LOG_EMERG
,
865 "Clients[%d] = %d, file = %d, state = %d",
866 i
, con
->number
, con
->file
, httpGetState(con
->http
));
868 for (i
= 0, lis
= (cupsd_listener_t
*)cupsArrayFirst(Listeners
);
870 i
++, lis
= (cupsd_listener_t
*)cupsArrayNext(Listeners
))
871 cupsdLogMessage(CUPSD_LOG_EMERG
, "Listeners[%d] = %d", i
, lis
->fd
);
873 cupsdLogMessage(CUPSD_LOG_EMERG
, "CGIPipes[0] = %d", CGIPipes
[0]);
876 cupsdLogMessage(CUPSD_LOG_EMERG
, "SysEventPipes[0] = %d",
878 #endif /* __APPLE__ */
880 for (job
= (cupsd_job_t
*)cupsArrayFirst(ActiveJobs
);
882 job
= (cupsd_job_t
*)cupsArrayNext(ActiveJobs
))
883 cupsdLogMessage(CUPSD_LOG_EMERG
, "Jobs[%d] = %d < [%d %d] > [%d %d]",
885 job
->status_buffer
? job
->status_buffer
->fd
: -1,
886 job
->print_pipes
[0], job
->print_pipes
[1],
887 job
->back_pipes
[0], job
->back_pipes
[1]);
889 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
890 for (p
= (cupsd_printer_t
*)cupsArrayFirst(Printers
);
892 p
= (cupsd_printer_t
*)cupsArrayNext(Printers
))
893 cupsdLogMessage(CUPSD_LOG_EMERG
, "printer[%s] reg_name=\"%s\"", p
->name
,
894 p
->reg_name
? p
->reg_name
: "(null)");
895 #endif /* HAVE_DNSSD || HAVE_AVAHI */
900 current_time
= time(NULL
);
903 * Write dirty config/state files...
906 if (DirtyCleanTime
&& current_time
>= DirtyCleanTime
)
911 * If we are going to sleep and still have pending jobs, stop them after
912 * a period of time...
915 if (SleepJobs
> 0 && current_time
>= SleepJobs
&&
916 cupsArrayCount(PrintingJobs
) > 0)
919 cupsdStopAllJobs(CUPSD_JOB_DEFAULT
, 5);
921 #endif /* __APPLE__ */
925 * Update the network interfaces once a minute...
928 if ((current_time
- netif_time
) >= 60)
930 netif_time
= current_time
;
933 #endif /* !__APPLE__ */
937 * If no other work was scheduled and we're being controlled by launchd,
938 * systemd, or upstart then timeout after 'LaunchdTimeout' seconds of
942 if (!fds
&& service_idle_exit
)
944 cupsdLogMessage(CUPSD_LOG_INFO
,
945 "Printer sharing is off and there are no jobs pending, "
946 "will restart on demand.");
950 #endif /* HAVE_ONDEMAND */
953 * Resume listening for new connections as needed...
956 if (ListeningPaused
&& ListeningPaused
<= current_time
&&
957 cupsArrayCount(Clients
) < MaxClients
)
958 cupsdResumeListening();
961 * Expire subscriptions and unload completed jobs as needed...
964 if (current_time
> expire_time
)
966 if (cupsArrayCount(Subscriptions
) > 0)
967 cupsdExpireSubscriptions(NULL
, NULL
);
969 cupsdUnloadCompletedJobs();
971 expire_time
= current_time
;
975 * Delete stale local printers...
978 if (current_time
>= local_timeout
)
980 cupsdDeleteTemporaryPrinters(0);
984 #ifndef HAVE_AUTHORIZATION_H
986 * Update the root certificate once every 5 minutes if we have client
990 if ((current_time
- RootCertTime
) >= RootCertDuration
&& RootCertDuration
&&
991 !RunUser
&& cupsArrayCount(Clients
))
994 * Update the root certificate...
998 cupsdAddCert(0, "root", cupsdDefaultAuthType());
1000 #endif /* !HAVE_AUTHORIZATION_H */
1003 * Check for new data on the client sockets...
1006 for (con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
1008 con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
1011 * Process pending data in the input buffer...
1014 if (httpGetReady(con
->http
))
1016 cupsdReadClient(con
);
1021 * Check the activity and close old clients...
1024 activity
= current_time
- Timeout
;
1025 if (httpGetActivity(con
->http
) < activity
&& !con
->pipe_pid
)
1027 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Closing client %d after %d seconds of inactivity.", con
->number
, Timeout
);
1029 cupsdCloseClient(con
);
1035 * Update any pending multi-file documents...
1038 if ((current_time
- senddoc_time
) >= 10)
1041 senddoc_time
= current_time
;
1045 * Clean job history...
1048 if (JobHistoryUpdate
&& current_time
>= JobHistoryUpdate
)
1052 * Log statistics at most once a minute when in debug mode...
1055 if ((current_time
- report_time
) >= 60 && LogLevel
>= CUPSD_LOG_DEBUG
)
1057 size_t string_count
, /* String count */
1058 alloc_bytes
, /* Allocated string bytes */
1059 total_bytes
; /* Total string bytes */
1060 #ifdef HAVE_MALLINFO
1061 struct mallinfo mem
; /* Malloc information */
1065 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: malloc-arena=%lu", mem
.arena
);
1066 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: malloc-used=%lu",
1067 mem
.usmblks
+ mem
.uordblks
);
1068 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: malloc-free=%lu",
1069 mem
.fsmblks
+ mem
.fordblks
);
1070 #endif /* HAVE_MALLINFO */
1072 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: clients=%d",
1073 cupsArrayCount(Clients
));
1074 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: jobs=%d",
1075 cupsArrayCount(Jobs
));
1076 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: jobs-active=%d",
1077 cupsArrayCount(ActiveJobs
));
1078 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: printers=%d",
1079 cupsArrayCount(Printers
));
1081 string_count
= _cupsStrStatistics(&alloc_bytes
, &total_bytes
);
1082 cupsdLogMessage(CUPSD_LOG_DEBUG
,
1083 "Report: stringpool-string-count=" CUPS_LLFMT
,
1084 CUPS_LLCAST string_count
);
1085 cupsdLogMessage(CUPSD_LOG_DEBUG
,
1086 "Report: stringpool-alloc-bytes=" CUPS_LLFMT
,
1087 CUPS_LLCAST alloc_bytes
);
1088 cupsdLogMessage(CUPSD_LOG_DEBUG
,
1089 "Report: stringpool-total-bytes=" CUPS_LLFMT
,
1090 CUPS_LLCAST total_bytes
);
1092 report_time
= current_time
;
1096 * Handle OS-specific event notification for any events that have
1097 * accumulated. Don't send these more than once a second...
1100 if (LastEvent
&& (current_time
- event_time
) >= 1)
1102 #ifdef HAVE_NOTIFY_POST
1103 if (LastEvent
& (CUPSD_EVENT_PRINTER_ADDED
|
1104 CUPSD_EVENT_PRINTER_DELETED
|
1105 CUPSD_EVENT_PRINTER_MODIFIED
))
1107 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
1108 "notify_post(\"com.apple.printerListChange\")");
1109 notify_post("com.apple.printerListChange");
1112 if (LastEvent
& CUPSD_EVENT_PRINTER_STATE_CHANGED
)
1114 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
1115 "notify_post(\"com.apple.printerHistoryChange\")");
1116 notify_post("com.apple.printerHistoryChange");
1119 if (LastEvent
& (CUPSD_EVENT_JOB_STATE_CHANGED
|
1120 CUPSD_EVENT_JOB_CONFIG_CHANGED
|
1121 CUPSD_EVENT_JOB_PROGRESS
))
1123 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
1124 "notify_post(\"com.apple.jobChange\")");
1125 notify_post("com.apple.jobChange");
1127 #endif /* HAVE_NOTIFY_POST */
1130 * Reset the accumulated events...
1133 LastEvent
= CUPSD_EVENT_NONE
;
1134 event_time
= current_time
;
1139 * Log a message based on what happened...
1144 cupsdLogMessage(CUPSD_LOG_INFO
, "Scheduler shutting down normally.");
1145 cupsdAddEvent(CUPSD_EVENT_SERVER_STOPPED
, NULL
, NULL
,
1146 "Scheduler shutting down normally.");
1150 cupsdLogMessage(CUPSD_LOG_ERROR
,
1151 "Scheduler shutting down due to program error.");
1152 cupsdAddEvent(CUPSD_EVENT_SERVER_STOPPED
, NULL
, NULL
,
1153 "Scheduler shutting down due to program error.");
1157 * Close all network clients...
1165 * Update the KeepAlive/PID file as needed...
1168 service_checkout(1);
1177 * Delete all temporary printers...
1180 cupsdDeleteTemporaryPrinters(1);
1184 * Stop monitoring system event monitoring...
1188 cupsdStopSystemMonitor();
1189 #endif /* __APPLE__ */
1193 return (!stop_scheduler
);
1198 * 'cupsdAddString()' - Copy and add a string to an array.
1201 int /* O - 1 on success, 0 on failure */
1202 cupsdAddString(cups_array_t
**a
, /* IO - String array */
1203 const char *s
) /* I - String to copy and add */
1206 *a
= cupsArrayNew3((cups_array_func_t
)strcmp
, NULL
,
1207 (cups_ahash_func_t
)NULL
, 0,
1208 (cups_acopy_func_t
)strdup
,
1209 (cups_afree_func_t
)free
);
1211 return (cupsArrayAdd(*a
, (char *)s
));
1216 * 'cupsdCheckProcess()' - Tell the main loop to check for dead children.
1220 cupsdCheckProcess(void)
1223 * Flag that we have dead children...
1231 * 'cupsdClearString()' - Clear a string.
1235 cupsdClearString(char **s
) /* O - String value */
1246 * 'cupsdFreeStrings()' - Free an array of strings.
1250 cupsdFreeStrings(cups_array_t
**a
) /* IO - String array */
1254 cupsArrayDelete(*a
);
1261 * 'cupsdHoldSignals()' - Hold child and termination signals.
1265 cupsdHoldSignals(void)
1267 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
1268 sigset_t newmask
; /* New POSIX signal mask */
1269 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */
1279 #elif defined(HAVE_SIGACTION)
1280 sigemptyset(&newmask
);
1281 sigaddset(&newmask
, SIGTERM
);
1282 sigaddset(&newmask
, SIGCHLD
);
1283 sigprocmask(SIG_BLOCK
, &newmask
, &holdmask
);
1284 #endif /* HAVE_SIGSET */
1289 * 'cupsdReleaseSignals()' - Release signals for delivery.
1293 cupsdReleaseSignals(void)
1302 #elif defined(HAVE_SIGACTION)
1303 sigprocmask(SIG_SETMASK
, &holdmask
, NULL
);
1304 #endif /* HAVE_SIGSET */
1309 * 'cupsdSetString()' - Set a string value.
1313 cupsdSetString(char **s
, /* O - New string */
1314 const char *v
) /* I - String value */
1330 * 'cupsdSetStringf()' - Set a formatted string value.
1334 cupsdSetStringf(char **s
, /* O - New string */
1335 const char *f
, /* I - Printf-style format string */
1336 ...) /* I - Additional args as needed */
1338 char v
[65536 + 64]; /* Formatting string value */
1339 va_list ap
; /* Argument pointer */
1340 char *olds
; /* Old string */
1351 vsnprintf(v
, sizeof(v
), f
, ap
);
1365 * 'parent_handler()' - Catch USR1/CHLD signals...
1369 parent_handler(int sig
) /* I - Signal */
1372 * Store the signal we got from the OS and return...
1375 parent_signal
= sig
;
1380 * 'process_children()' - Process all dead children...
1384 process_children(void)
1386 int status
; /* Exit status of child */
1387 int pid
, /* Process ID of child */
1388 job_id
; /* Job ID of child */
1389 cupsd_job_t
*job
; /* Current job */
1390 int i
; /* Looping var */
1391 char name
[1024]; /* Process name */
1392 const char *type
; /* Type of program */
1395 cupsdLogMessage(CUPSD_LOG_DEBUG2
, "process_children()");
1398 * Reset the dead_children flag...
1404 * Collect the exit status of some children...
1408 while ((pid
= waitpid(-1, &status
, WNOHANG
)) > 0)
1409 #elif defined(HAVE_WAIT3)
1410 while ((pid
= wait3(&status
, WNOHANG
, NULL
)) > 0)
1412 if ((pid
= wait(&status
)) > 0)
1413 #endif /* HAVE_WAITPID */
1416 * Collect the name of the process that finished...
1419 cupsdFinishProcess(pid
, name
, sizeof(name
), &job_id
);
1422 * Delete certificates for CGI processes...
1426 cupsdDeleteCert(pid
);
1429 * Handle completed job filters...
1433 job
= cupsdFindJob(job_id
);
1439 for (i
= 0; job
->filters
[i
]; i
++)
1440 if (job
->filters
[i
] == pid
)
1443 if (job
->filters
[i
] || job
->backend
== pid
)
1446 * OK, this process has gone away; what's left?
1449 if (job
->filters
[i
])
1451 job
->filters
[i
] = -pid
;
1456 job
->backend
= -pid
;
1460 if (status
&& status
!= SIGTERM
&& status
!= SIGKILL
&&
1464 * An error occurred; save the exit status so we know to stop
1465 * the printer or cancel the job when all of the filters finish...
1467 * A negative status indicates that the backend failed and the
1468 * printer needs to be stopped.
1470 * In order to preserve the most serious status, we always log
1471 * when a process dies due to a signal (e.g. SIGABRT, SIGSEGV,
1472 * and SIGBUS) and prefer to log the backend exit status over a
1476 int old_status
= abs(job
->status
);
1478 if (WIFSIGNALED(status
) || /* This process crashed, or */
1479 !job
->status
|| /* No process had a status, or */
1480 (!job
->filters
[i
] && WIFEXITED(old_status
)))
1481 { /* Backend and filter didn't crash */
1482 if (job
->filters
[i
])
1484 job
->status
= status
; /* Filter failed */
1488 job
->status
= -status
; /* Backend failed */
1490 if (job
->current_file
< job
->num_files
)
1491 cupsdSetJobState(job
, IPP_JOB_ABORTED
, CUPSD_JOB_FORCE
, "Canceling multi-file job due to backend failure.");
1495 if (job
->state_value
== IPP_JOB_PROCESSING
&&
1496 job
->status_level
> CUPSD_LOG_ERROR
&&
1497 (job
->filters
[i
] || !WIFEXITED(status
)))
1499 char message
[1024]; /* New printer-state-message */
1502 job
->status_level
= CUPSD_LOG_ERROR
;
1504 snprintf(message
, sizeof(message
), "%s failed", type
);
1508 strlcpy(job
->printer
->state_message
, message
,
1509 sizeof(job
->printer
->state_message
));
1515 if (!job
->printer_message
&& job
->attrs
)
1517 if ((job
->printer_message
=
1518 ippFindAttribute(job
->attrs
, "job-printer-state-message",
1519 IPP_TAG_TEXT
)) == NULL
)
1520 job
->printer_message
= ippAddString(job
->attrs
, IPP_TAG_JOB
,
1522 "job-printer-state-message",
1526 if (job
->printer_message
)
1527 ippSetString(job
->attrs
, &job
->printer_message
, 0, message
);
1532 * If this is not the last file in a job, see if all of the
1533 * filters are done, and if so move to the next file.
1536 if (job
->state_value
>= IPP_JOB_CANCELED
)
1539 * Remove the job from the active list if there are no processes still
1543 for (i
= 0; job
->filters
[i
] < 0; i
++);
1545 if (!job
->filters
[i
] && job
->backend
<= 0)
1546 cupsArrayRemove(ActiveJobs
, job
);
1548 else if (job
->current_file
< job
->num_files
&& job
->printer
)
1550 for (i
= 0; job
->filters
[i
] < 0; i
++);
1552 if (!job
->filters
[i
] &&
1553 (!job
->printer
->pc
|| !job
->printer
->pc
->single_file
||
1557 * Process the next file...
1560 cupsdContinueJob(job
);
1567 * Show the exit status as needed, ignoring SIGTERM and SIGKILL errors
1568 * since they come when we kill/end a process...
1571 if (status
== SIGTERM
|| status
== SIGKILL
)
1573 cupsdLogJob(job
, CUPSD_LOG_DEBUG
,
1574 "PID %d (%s) was terminated normally with signal %d.", pid
,
1577 else if (status
== SIGPIPE
)
1579 cupsdLogJob(job
, CUPSD_LOG_DEBUG
,
1580 "PID %d (%s) did not catch or ignore signal %d.", pid
, name
,
1585 if (WIFEXITED(status
))
1587 int code
= WEXITSTATUS(status
); /* Exit code */
1590 cupsdLogJob(job
, CUPSD_LOG_DEBUG
,
1591 "PID %d (%s) stopped with status %d (%s)", pid
, name
,
1592 code
, strerror(code
- 100));
1594 cupsdLogJob(job
, CUPSD_LOG_DEBUG
,
1595 "PID %d (%s) stopped with status %d.", pid
, name
, code
);
1598 cupsdLogJob(job
, CUPSD_LOG_DEBUG
, "PID %d (%s) crashed on signal %d.",
1599 pid
, name
, WTERMSIG(status
));
1601 if (LogLevel
< CUPSD_LOG_DEBUG
)
1602 cupsdLogJob(job
, CUPSD_LOG_INFO
,
1603 "Hint: Try setting the LogLevel to \"debug\" to find out "
1607 cupsdLogJob(job
, CUPSD_LOG_DEBUG
, "PID %d (%s) exited with no errors.",
1612 * If wait*() is interrupted by a signal, tell main() to call us again...
1615 if (pid
< 0 && errno
== EINTR
)
1621 * 'select_timeout()' - Calculate the select timeout value.
1625 static long /* O - Number of seconds */
1626 select_timeout(int fds
) /* I - Number of descriptors returned */
1628 long timeout
; /* Timeout for select */
1629 time_t now
; /* Current time */
1630 cupsd_client_t
*con
; /* Client information */
1631 cupsd_job_t
*job
; /* Job information */
1632 cupsd_printer_t
*printer
; /* Printer information */
1633 const char *why
; /* Debugging aid */
1636 cupsdLogMessage(CUPSD_LOG_DEBUG2
, "select_timeout: JobHistoryUpdate=%ld",
1637 (long)JobHistoryUpdate
);
1640 * Check to see if any of the clients have pending data to be
1641 * processed; if so, the timeout should be 0...
1644 for (con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
1646 con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
1647 if (httpGetReady(con
->http
))
1651 * If select has been active in the last second (fds > 0) or we have
1652 * many resources in use then don't bother trying to optimize the
1653 * timeout, just make it 1 second.
1656 if (fds
> 0 || cupsArrayCount(Clients
) > 50)
1660 * Otherwise, check all of the possible events that we need to wake for...
1664 timeout
= now
+ 86400; /* 86400 == 1 day */
1669 * When going to sleep, wake up to abort jobs that don't complete in time.
1672 if (SleepJobs
> 0 && SleepJobs
< timeout
)
1674 timeout
= SleepJobs
;
1675 why
= "abort jobs before sleeping";
1677 #endif /* __APPLE__ */
1680 * Check whether we are accepting new connections...
1683 if (ListeningPaused
> 0 && cupsArrayCount(Clients
) < MaxClients
&&
1684 ListeningPaused
< timeout
)
1686 if (ListeningPaused
<= now
)
1689 timeout
= ListeningPaused
;
1691 why
= "resume listening";
1695 * Check the activity and close old clients...
1698 for (con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
1700 con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
1701 if ((httpGetActivity(con
->http
) + Timeout
) < timeout
)
1703 timeout
= httpGetActivity(con
->http
) + Timeout
;
1704 why
= "timeout a client connection";
1708 * Write out changes to configuration and state files...
1711 if (DirtyCleanTime
&& timeout
> DirtyCleanTime
)
1713 timeout
= DirtyCleanTime
;
1714 why
= "write dirty config/state files";
1718 * Check for any job activity...
1721 if (JobHistoryUpdate
&& timeout
> JobHistoryUpdate
)
1723 timeout
= JobHistoryUpdate
;
1724 why
= "update job history";
1727 for (job
= (cupsd_job_t
*)cupsArrayFirst(ActiveJobs
);
1729 job
= (cupsd_job_t
*)cupsArrayNext(ActiveJobs
))
1731 if (job
->cancel_time
&& job
->cancel_time
< timeout
)
1733 timeout
= job
->cancel_time
;
1734 why
= "cancel stuck jobs";
1737 if (job
->kill_time
&& job
->kill_time
< timeout
)
1739 timeout
= job
->kill_time
;
1740 why
= "kill unresponsive jobs";
1743 if (job
->state_value
== IPP_JOB_HELD
&& job
->hold_until
< timeout
)
1745 timeout
= job
->hold_until
;
1746 why
= "release held jobs";
1749 if (job
->state_value
== IPP_JOB_PENDING
&& timeout
> (now
+ 10))
1752 why
= "start pending jobs";
1758 * Check for temporary printers that need to be deleted...
1761 for (printer
= (cupsd_printer_t
*)cupsArrayFirst(Printers
); printer
; printer
= (cupsd_printer_t
*)cupsArrayNext(Printers
))
1763 if (printer
->temporary
&& !printer
->job
&& (!local_timeout
|| local_timeout
> (printer
->state_time
+ 60)))
1764 local_timeout
= printer
->state_time
+ 60;
1767 if (timeout
> local_timeout
&& local_timeout
)
1769 timeout
= local_timeout
;
1770 why
= "delete stale local printers";
1774 * Adjust from absolute to relative time. We add 1 second to the timeout since
1775 * events occur after the timeout expires, and limit the timeout to 86400
1776 * seconds (1 day) to avoid select() timeout limits present on some operating
1780 timeout
= timeout
- now
+ 1;
1784 else if (timeout
> 86400)
1788 * Log and return the timeout value...
1791 cupsdLogMessage(CUPSD_LOG_DEBUG2
, "select_timeout(%d): %ld seconds to %s",
1799 * 'sigchld_handler()' - Handle 'child' signals from old processes.
1803 sigchld_handler(int sig
) /* I - Signal number */
1808 * Flag that we have dead children...
1814 * Reset the signal handler as needed...
1817 #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION)
1818 signal(SIGCLD
, sigchld_handler
);
1819 #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */
1824 * 'sighup_handler()' - Handle 'hangup' signals to reconfigure the scheduler.
1828 sighup_handler(int sig
) /* I - Signal number */
1832 NeedReload
= RELOAD_ALL
;
1833 ReloadTime
= time(NULL
);
1835 #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION)
1836 signal(SIGHUP
, sighup_handler
);
1837 #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */
1842 * 'sigterm_handler()' - Handle 'terminate' signals that stop the scheduler.
1846 sigterm_handler(int sig
) /* I - Signal number */
1848 (void)sig
; /* remove compiler warnings... */
1851 * Flag that we should stop and return...
1858 #ifdef HAVE_ONDEMAND
1860 * 'service_add_listener()' - Bind an open fd as a Listener.
1864 service_add_listener(int fd
, /* I - Socket file descriptor */
1865 int idx
) /* I - Listener number, for logging */
1867 cupsd_listener_t
*lis
; /* Listeners array */
1868 http_addr_t addr
; /* Address variable */
1869 socklen_t addrlen
; /* Length of address */
1870 char s
[256]; /* String addresss */
1873 addrlen
= sizeof(addr
);
1875 if (getsockname(fd
, (struct sockaddr
*)&addr
, &addrlen
))
1877 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_add_listener: Unable to get local address for listener #%d: %s", idx
+ 1, strerror(errno
));
1881 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_add_listener: Listener #%d at fd %d, \"%s\".", idx
+ 1, fd
, httpAddrString(&addr
, s
, sizeof(s
)));
1884 * Try to match the on-demand socket address to one of the listeners...
1887 for (lis
= (cupsd_listener_t
*)cupsArrayFirst(Listeners
);
1889 lis
= (cupsd_listener_t
*)cupsArrayNext(Listeners
))
1890 if (httpAddrEqual(&lis
->address
, &addr
))
1894 * Add a new listener If there's no match...
1899 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_add_listener: Matched existing listener #%d to %s.", idx
+ 1, httpAddrString(&(lis
->address
), s
, sizeof(s
)));
1903 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_add_listener: Adding new listener #%d for %s.", idx
+ 1, httpAddrString(&addr
, s
, sizeof(s
)));
1905 if ((lis
= calloc(1, sizeof(cupsd_listener_t
))) == NULL
)
1907 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_add_listener: Unable to allocate listener: %s.", strerror(errno
));
1912 cupsArrayAdd(Listeners
, lis
);
1914 memcpy(&lis
->address
, &addr
, sizeof(lis
->address
));
1921 if (httpAddrPort(&(lis
->address
)) == 443)
1922 lis
->encryption
= HTTP_ENCRYPT_ALWAYS
;
1923 # endif /* HAVE_SSL */
1925 #endif /* HAVE_ONDEMAND */
1929 * 'service_checkin()' - Check-in with launchd and collect the listening fds.
1933 service_checkin(void)
1935 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_checkin: pid=%d", (int)getpid());
1940 int error
; /* Check-in error, if any */
1941 size_t i
, /* Looping var */
1942 count
; /* Number of listeners */
1943 int *ld_sockets
; /* Listener sockets */
1947 * Force "user initiated" priority for the main thread...
1950 pthread_set_qos_class_self_np(QOS_CLASS_USER_INITIATED
, 0);
1951 # endif /* __APPLE__ */
1954 * Check-in with launchd...
1957 if ((error
= launch_activate_socket("Listeners", &ld_sockets
, &count
)) != 0)
1959 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: Unable to get listener sockets: %s", strerror(error
));
1961 return; /* anti-compiler-warning */
1965 * Try to match the launchd sockets to the cupsd listeners...
1968 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_checkin: %d listeners.", (int)count
);
1970 for (i
= 0; i
< count
; i
++)
1971 service_add_listener(ld_sockets
[i
], (int)i
);
1976 xpc_transaction_begin();
1977 # endif /* __APPLE__ */
1980 #elif defined(HAVE_SYSTEMD)
1983 int i
, /* Looping var */
1984 count
; /* Number of listeners */
1987 * Check-in with systemd...
1990 if ((count
= sd_listen_fds(0)) < 0)
1992 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: Unable to get listener sockets: %s", strerror(-count
));
1994 return; /* anti-compiler-warning */
1998 * Try to match the systemd sockets to the cupsd listeners...
2001 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_checkin: %d listeners.", count
);
2003 for (i
= 0; i
< count
; i
++)
2004 service_add_listener(SD_LISTEN_FDS_START
+ i
, i
);
2007 #elif defined(HAVE_UPSTART)
2010 const char *e
; /* Environment var */
2011 int fd
; /* File descriptor */
2014 if (!(e
= getenv("UPSTART_EVENTS")))
2016 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: We did not get started via Upstart.");
2021 if (strcasecmp(e
, "socket"))
2023 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: We did not get triggered via an Upstart socket event.");
2028 if ((e
= getenv("UPSTART_FDS")) == NULL
)
2030 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: Unable to get listener sockets from UPSTART_FDS.");
2035 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_checkin: UPSTART_FDS=%s", e
);
2037 fd
= (int)strtol(e
, NULL
, 10);
2040 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: Could not parse UPSTART_FDS: %s", strerror(errno
));
2046 * Upstart only supportst a single on-demand socket file descriptor...
2049 service_add_listener(fd
, 0);
2051 #endif /* HAVE_LAUNCHD */
2056 * 'service_checkout()' - Update the KeepAlive/PID file as needed.
2060 service_checkout(int shutdown
) /* I - Shutting down? */
2062 cups_file_t
*fp
; /* File */
2063 char pidfile
[1024]; /* PID/KeepAlive file */
2067 * When running on-demand, use the KeepAlive file, otherwise write a PID file
2071 #ifdef HAVE_ONDEMAND
2074 strlcpy(pidfile
, CUPS_KEEPALIVE
, sizeof(pidfile
));
2076 if (cupsArrayCount(ActiveJobs
) || /* Active jobs */
2077 WebInterface
|| /* Web interface enabled */
2078 NeedReload
|| /* Doing a reload */
2079 (Browsing
&& BrowseLocalProtocols
&& cupsArrayCount(Printers
)))
2080 /* Printers being shared */
2083 * Create or remove the "keep-alive" file based on whether there are active
2084 * jobs or shared printers to advertise...
2091 #endif /* HAVE_ONDEMAND */
2092 snprintf(pidfile
, sizeof(pidfile
), "%s/cupsd.pid", StateDir
);
2096 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Removing KeepAlive/PID file \"%s\".", pidfile
);
2102 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Creating KeepAlive/PID file \"%s\".", pidfile
);
2104 if ((fp
= cupsFileOpen(pidfile
, "w")) != NULL
)
2107 * Save the PID in the file...
2110 cupsFilePrintf(fp
, "%d\n", (int)getpid());
2114 cupsdLogMessage(CUPSD_LOG_ERROR
, "Unable to create KeepAlive/PID file \"%s\": %s", pidfile
, strerror(errno
));
2118 if (OnDemand
&& shutdown
)
2119 xpc_transaction_end();
2120 # endif /* __APPLE__ */
2125 * 'usage()' - Show scheduler usage.
2129 usage(int status
) /* O - Exit status */
2131 FILE *fp
= status
? stderr
: stdout
; /* Output file */
2134 _cupsLangPuts(fp
, _("Usage: cupsd [options]"));
2135 _cupsLangPuts(fp
, _("Options:"));
2136 _cupsLangPuts(fp
, _("-c cupsd.conf Set cupsd.conf file to use."));
2137 _cupsLangPuts(fp
, _("-f Run in the foreground."));
2138 _cupsLangPuts(fp
, _("-F Run in the foreground but detach from console."));
2139 _cupsLangPuts(fp
, _("-h Show this usage message."));
2140 #ifdef HAVE_ONDEMAND
2141 _cupsLangPuts(fp
, _("-l Run cupsd on demand."));
2142 #endif /* HAVE_ONDEMAND */
2143 _cupsLangPuts(fp
, _("-s cups-files.conf Set cups-files.conf file to use."));
2144 _cupsLangPuts(fp
, _("-t Test the configuration file."));