2 * Main loop for the CUPS scheduler.
4 * Copyright 2007-2017 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 #elif defined(HAVE_SYSTEMD_SD_JOURNAL_H)
21 # define SD_JOURNAL_SUPPRESS_LOCATION
22 # include <systemd/sd-journal.h>
23 #endif /* HAVE_ASL_H */
29 #endif /* HAVE_LAUNCH_H */
32 # include <systemd/sd-daemon.h>
33 #endif /* HAVE_SYSTEMD */
36 # define CUPS_KEEPALIVE CUPS_CACHEDIR "/org.cups.cupsd"
37 /* Name of the KeepAlive file */
38 #endif /* HAVE_ONDEMAND */
40 #if defined(HAVE_MALLOC_H) && defined(HAVE_MALLINFO)
42 #endif /* HAVE_MALLOC_H && HAVE_MALLINFO */
46 #endif /* HAVE_NOTIFY_H */
49 # include <dbus/dbus.h>
50 #endif /* HAVE_DBUS */
52 #ifdef HAVE_SYS_PARAM_H
53 # include <sys/param.h>
54 #endif /* HAVE_SYS_PARAM_H */
61 static void parent_handler(int sig
);
62 static void process_children(void);
63 static void sigchld_handler(int sig
);
64 static void sighup_handler(int sig
);
65 static void sigterm_handler(int sig
);
66 static long select_timeout(int fds
);
67 static void service_checkin(void);
68 static void service_checkout(int shutdown
);
69 static void usage(int status
) __attribute__((noreturn
));
76 static int parent_signal
= 0;
77 /* Set to signal number from child */
78 static int holdcount
= 0; /* Number of times "hold" was called */
79 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
80 static sigset_t holdmask
; /* Old POSIX signal mask */
81 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */
82 static int dead_children
= 0;
84 static int stop_scheduler
= 0;
85 /* Should the scheduler stop? */
86 static time_t local_timeout
= 0;
87 /* Next local printer timeout */
91 * 'main()' - Main entry for the CUPS scheduler.
94 int /* O - Exit status */
95 main(int argc
, /* I - Number of command-line args */
96 char *argv
[]) /* I - Command-line arguments */
98 int i
; /* Looping var */
99 char *opt
; /* Option character */
100 int close_all
= 1, /* Close all file descriptors? */
101 disconnect
= 1, /* Disconnect from controlling terminal? */
102 fg
= 0, /* Run in foreground? */
104 /* Running as child process? */
106 /* Print the sandbox profile to stdout? */
107 int fds
; /* Number of ready descriptors */
108 cupsd_client_t
*con
; /* Current client */
109 cupsd_job_t
*job
; /* Current job */
110 cupsd_listener_t
*lis
; /* Current listener */
111 time_t current_time
, /* Current time */
112 activity
, /* Client activity timer */
113 senddoc_time
, /* Send-Document time */
114 expire_time
, /* Subscription expire time */
115 report_time
, /* Malloc/client/job report time */
116 event_time
; /* Last event notification time */
117 long timeout
; /* Timeout for cupsdDoSelect() */
118 struct rlimit limit
; /* Runtime limit */
119 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
120 struct sigaction action
; /* Actions for POSIX signals */
121 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */
123 int use_sysman
= 1; /* Use system management functions? */
125 time_t netif_time
= 0; /* Time since last network update */
126 #endif /* __APPLE__ */
127 #if defined(HAVE_ONDEMAND)
128 int service_idle_exit
;
129 /* Idle exit on select timeout? */
130 #endif /* HAVE_ONDEMAND */
135 * Check for setuid invocation, which we do not support!
138 if (getuid() != geteuid())
140 fputs("cupsd: Cannot run as a setuid program.\n", stderr
);
143 #endif /* HAVE_GETEUID */
146 * Check for command-line arguments...
152 if (getenv("CUPSD_LAUNCHD"))
159 #endif /* HAVE_LAUNCHD */
161 for (i
= 1; i
< argc
; i
++)
162 if (argv
[i
][0] == '-')
163 for (opt
= argv
[i
] + 1; *opt
!= '\0'; opt
++)
166 case 'C' : /* Run as child with config file */
171 case 'c' : /* Configuration file */
175 _cupsLangPuts(stderr
, _("cupsd: Expected config filename "
176 "after \"-c\" option."));
180 if (argv
[i
][0] == '/')
183 * Absolute directory...
186 cupsdSetString(&ConfigurationFile
, argv
[i
]);
191 * Relative directory...
194 char *current
; /* Current directory */
197 * Allocate a buffer for the current working directory to
198 * reduce run-time stack usage; this approximates the
199 * behavior of some implementations of getcwd() when they
200 * are passed a NULL pointer.
203 if ((current
= malloc(1024)) == NULL
)
205 _cupsLangPuts(stderr
,
206 _("cupsd: Unable to get current directory."));
210 if (!getcwd(current
, 1024))
212 _cupsLangPuts(stderr
,
213 _("cupsd: Unable to get current directory."));
218 cupsdSetStringf(&ConfigurationFile
, "%s/%s", current
, argv
[i
]);
223 case 'f' : /* Run in foreground... */
229 case 'F' : /* Run in foreground, but disconnect from terminal... */
234 case 'h' : /* Show usage/help */
238 case 'l' : /* Started by launchd/systemd/upstart... */
245 _cupsLangPuts(stderr
, _("cupsd: On-demand support not compiled "
246 "in, running in normal mode."));
250 #endif /* HAVE_ONDEMAND */
253 case 'p' : /* Stop immediately for profiling */
254 fputs("cupsd: -p (startup profiling) is for internal testing "
255 "use only!\n", stderr
);
262 case 'P' : /* Disable security profiles */
263 fputs("cupsd: -P (disable sandboxing) is for internal testing use only.\n", stderr
);
267 case 's' : /* Set cups-files.conf location */
271 _cupsLangPuts(stderr
, _("cupsd: Expected cups-files.conf "
272 "filename after \"-s\" option."));
276 if (argv
[i
][0] != '/')
279 * Relative filename not allowed...
282 _cupsLangPuts(stderr
, _("cupsd: Relative cups-files.conf "
283 "filename not allowed."));
287 cupsdSetString(&CupsFilesFile
, argv
[i
]);
291 case 'S' : /* Disable system management functions */
292 fputs("cupsd: -S (disable system management) for internal "
293 "testing use only!\n", stderr
);
296 #endif /* __APPLE__ */
298 case 't' : /* Test the cupsd.conf file... */
305 case 'T' : /* Print security profile */
312 default : /* Unknown option */
313 _cupsLangPrintf(stderr
, _("cupsd: Unknown option \"%c\" - "
320 _cupsLangPrintf(stderr
, _("cupsd: Unknown argument \"%s\" - aborting."),
325 if (!ConfigurationFile
)
326 cupsdSetString(&ConfigurationFile
, CUPS_SERVERROOT
"/cupsd.conf");
330 char *filename
, /* Copy of cupsd.conf filename */
331 *slash
; /* Final slash in cupsd.conf filename */
332 size_t len
; /* Size of buffer */
334 len
= strlen(ConfigurationFile
) + 15;
335 if ((filename
= malloc(len
)) == NULL
)
337 _cupsLangPrintf(stderr
,
338 _("cupsd: Unable to get path to "
339 "cups-files.conf file."));
343 strlcpy(filename
, ConfigurationFile
, len
);
344 if ((slash
= strrchr(filename
, '/')) == NULL
)
346 _cupsLangPrintf(stderr
,
347 _("cupsd: Unable to get path to "
348 "cups-files.conf file."));
352 strlcpy(slash
, "/cups-files.conf", len
- (size_t)(slash
- filename
));
353 cupsdSetString(&CupsFilesFile
, filename
);
360 * Make sure we aren't tying up any filesystems...
366 * Disconnect from the controlling terminal...
375 * Close all open files...
378 getrlimit(RLIMIT_NOFILE
, &limit
);
380 for (i
= 0; i
< (int)limit
.rlim_cur
&& i
< 1024; i
++)
384 * Redirect stdin/out/err to /dev/null...
387 if ((i
= open("/dev/null", O_RDONLY
)) != 0)
393 if ((i
= open("/dev/null", O_WRONLY
)) != 1)
399 if ((i
= open("/dev/null", O_WRONLY
)) != 2)
406 LogStderr
= cupsFileStderr();
409 * Run in the background as needed...
415 * Setup signal handlers for the parent...
418 #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
419 sigset(SIGUSR1
, parent_handler
);
420 sigset(SIGCHLD
, parent_handler
);
422 sigset(SIGHUP
, SIG_IGN
);
423 #elif defined(HAVE_SIGACTION)
424 memset(&action
, 0, sizeof(action
));
425 sigemptyset(&action
.sa_mask
);
426 sigaddset(&action
.sa_mask
, SIGUSR1
);
427 action
.sa_handler
= parent_handler
;
428 sigaction(SIGUSR1
, &action
, NULL
);
429 sigaction(SIGCHLD
, &action
, NULL
);
431 sigemptyset(&action
.sa_mask
);
432 action
.sa_handler
= SIG_IGN
;
433 sigaction(SIGHUP
, &action
, NULL
);
435 signal(SIGUSR1
, parent_handler
);
436 signal(SIGCLD
, parent_handler
);
438 signal(SIGHUP
, SIG_IGN
);
439 #endif /* HAVE_SIGSET */
444 * OK, wait for the child to startup and send us SIGUSR1 or to crash
445 * and the OS send us SIGCHLD... We also need to ignore SIGHUP which
446 * might be sent by the init script to restart the scheduler...
449 for (; parent_signal
== 0;)
452 if (parent_signal
== SIGUSR1
)
460 else if (WIFEXITED(i
))
462 fprintf(stderr
, "cupsd: Child exited with status %d\n",
468 fprintf(stderr
, "cupsd: Child exited on signal %d\n", WTERMSIG(i
));
473 #if defined(__OpenBSD__) && OpenBSD < 201211
475 * Call _thread_sys_closefrom() so the child process doesn't reset the
476 * parent's file descriptors to be blocking. This is a workaround for a
477 * limitation of userland libpthread on older versions of OpenBSD.
480 _thread_sys_closefrom(0);
481 #endif /* __OpenBSD__ && OpenBSD < 201211 */
484 * Since many system libraries create fork-unsafe data on execution of a
485 * program, we need to re-execute the background cupsd with the "-C" and "-s"
486 * options to avoid problems. Unfortunately, we also have to assume that
487 * argv[0] contains the name of the cupsd executable - there is no portable
488 * way to get the real pathname...
491 execlp(argv
[0], argv
[0], "-C", ConfigurationFile
, "-s", CupsFilesFile
, (char *)0);
496 * Let the system know we are busy while we bring up cupsd...
499 cupsdSetBusyState(1);
502 * Set the timezone info...
508 setlocale(LC_TIME
, "");
511 #ifdef HAVE_DBUS_THREADS_INIT
513 * Enable threading support for D-BUS...
516 dbus_threads_init_default();
517 #endif /* HAVE_DBUS_THREADS_INIT */
520 * Set the maximum number of files...
523 getrlimit(RLIMIT_NOFILE
, &limit
);
525 #if !defined(HAVE_POLL) && !defined(HAVE_EPOLL) && !defined(HAVE_KQUEUE)
526 if (limit
.rlim_max
> FD_SETSIZE
)
529 #endif /* !HAVE_POLL && !HAVE_EPOLL && !HAVE_KQUEUE */
531 if (limit
.rlim_max
== RLIM_INFINITY
)
534 #endif /* RLIM_INFINITY */
535 MaxFDs
= limit
.rlim_max
;
537 limit
.rlim_cur
= (rlim_t
)MaxFDs
;
539 setrlimit(RLIMIT_NOFILE
, &limit
);
544 * Read configuration...
547 if (!cupsdReadConfiguration())
549 else if (TestConfigFile
)
551 printf("\"%s\" is OK.\n", CupsFilesFile
);
552 printf("\"%s\" is OK.\n", ConfigurationFile
);
555 else if (print_profile
)
557 cups_file_t
*fp
; /* File pointer */
558 const char *profile
= cupsdCreateProfile(42, 0);
560 char line
[1024]; /* Line from file */
563 if ((fp
= cupsFileOpen(profile
, "r")) == NULL
)
565 printf("Unable to open profile file \"%s\": %s\n", profile
? profile
: "(null)", strerror(errno
));
569 while (cupsFileGets(fp
, line
, sizeof(line
)))
578 * Clean out old temp files and printer cache data.
581 if (!strncmp(TempDir
, RequestRoot
, strlen(RequestRoot
)))
582 cupsdCleanFiles(TempDir
, NULL
);
584 cupsdCleanFiles(CacheDir
, "*.ipp");
587 * If we were started on demand by launchd or systemd get the listen sockets
588 * file descriptors...
595 * Startup the server...
603 * Catch hangup and child signals and ignore broken pipes...
606 #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
607 sigset(SIGCHLD
, sigchld_handler
);
608 sigset(SIGHUP
, sighup_handler
);
609 sigset(SIGPIPE
, SIG_IGN
);
610 sigset(SIGTERM
, sigterm_handler
);
611 #elif defined(HAVE_SIGACTION)
612 memset(&action
, 0, sizeof(action
));
614 sigemptyset(&action
.sa_mask
);
615 sigaddset(&action
.sa_mask
, SIGTERM
);
616 sigaddset(&action
.sa_mask
, SIGCHLD
);
617 action
.sa_handler
= sigchld_handler
;
618 sigaction(SIGCHLD
, &action
, NULL
);
620 sigemptyset(&action
.sa_mask
);
621 sigaddset(&action
.sa_mask
, SIGHUP
);
622 action
.sa_handler
= sighup_handler
;
623 sigaction(SIGHUP
, &action
, NULL
);
625 sigemptyset(&action
.sa_mask
);
626 action
.sa_handler
= SIG_IGN
;
627 sigaction(SIGPIPE
, &action
, NULL
);
629 sigemptyset(&action
.sa_mask
);
630 sigaddset(&action
.sa_mask
, SIGTERM
);
631 sigaddset(&action
.sa_mask
, SIGCHLD
);
632 action
.sa_handler
= sigterm_handler
;
633 sigaction(SIGTERM
, &action
, NULL
);
635 signal(SIGCLD
, sigchld_handler
); /* No, SIGCLD isn't a typo... */
636 signal(SIGHUP
, sighup_handler
);
637 signal(SIGPIPE
, SIG_IGN
);
638 signal(SIGTERM
, sigterm_handler
);
639 #endif /* HAVE_SIGSET */
642 * Initialize authentication certificates...
648 * If we are running in the background, signal the parent process that
649 * we are up and running...
652 if (!fg
|| run_as_child
)
655 * Send a signal to the parent process, but only if the parent is
656 * not PID 1 (init). This avoids accidentally shutting down the
657 * system on OpenBSD if you CTRL-C the server before it is up...
660 i
= getppid(); /* Save parent PID to avoid race condition */
668 * Start power management framework...
672 cupsdStartSystemMonitor();
673 #endif /* __APPLE__ */
676 * Send server-started event...
681 cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED
, NULL
, NULL
, "Scheduler started on demand.");
683 #endif /* HAVE_ONDEMAND */
685 cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED
, NULL
, NULL
, "Scheduler started in foreground.");
687 cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED
, NULL
, NULL
, "Scheduler started in background.");
689 cupsdSetBusyState(0);
692 * Start any pending print jobs...
701 current_time
= time(NULL
);
702 event_time
= current_time
;
703 expire_time
= current_time
;
707 senddoc_time
= current_time
;
709 while (!stop_scheduler
)
712 * Check if there are dead children to handle...
719 * Check if we need to load the server configuration file...
725 * Close any idle clients...
728 if (cupsArrayCount(Clients
) > 0)
730 for (con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
732 con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
733 if (httpGetState(con
->http
) == HTTP_WAITING
)
734 cupsdCloseClient(con
);
736 con
->http
->keep_alive
= HTTP_KEEPALIVE_OFF
;
738 cupsdPauseListening();
742 * Restart if all clients are closed and all jobs finished, or
743 * if the reload timeout has elapsed...
746 if ((cupsArrayCount(Clients
) == 0 &&
747 (cupsArrayCount(PrintingJobs
) == 0 || NeedReload
!= RELOAD_ALL
)) ||
748 (time(NULL
) - ReloadTime
) >= ReloadTimeout
)
751 * Shutdown the server...
757 #endif /* HAVE_ONDEMAND */
764 * Read configuration...
767 if (!cupsdReadConfiguration())
769 #ifdef HAVE_SYSTEMD_SD_JOURNAL_H
770 sd_journal_print(LOG_ERR
, "Unable to read configuration file \"%s\" - exiting.", ConfigurationFile
);
772 syslog(LOG_LPR
, "Unable to read configuration file \'%s\' - exiting.", ConfigurationFile
);
773 #endif /* HAVE_SYSTEMD_SD_JOURNAL_H */
779 * Startup the server...
787 * Send a server-restarted event...
790 cupsdAddEvent(CUPSD_EVENT_SERVER_RESTARTED
, NULL
, NULL
,
791 "Scheduler restarted.");
796 * Check for available input or ready output. If cupsdDoSelect()
797 * returns 0 or -1, something bad happened and we should exit
800 * Note that we at least have one listening socket open at all
804 if ((timeout
= select_timeout(fds
)) > 1 && LastEvent
)
809 * If no other work is scheduled and we're being controlled by
810 * launchd then timeout after 'LaunchdTimeout' seconds of
814 if (timeout
== 86400 && OnDemand
&& IdleExitTimeout
&&
815 !cupsArrayCount(ActiveJobs
) &&
818 # endif /* HAVE_SYSTEMD */
819 (!Browsing
|| !BrowseLocalProtocols
|| !cupsArrayCount(Printers
)))
821 timeout
= IdleExitTimeout
;
822 service_idle_exit
= 1;
825 service_idle_exit
= 0;
826 #endif /* HAVE_ONDEMAND */
828 if ((fds
= cupsdDoSelect(timeout
)) < 0)
831 * Got an error from select!
834 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
835 cupsd_printer_t
*p
; /* Current printer */
836 #endif /* HAVE_DNSSD || HAVE_AVAHI */
838 if (errno
== EINTR
) /* Just interrupted by a signal */
842 * Log all sorts of debug info to help track down the problem.
845 cupsdLogMessage(CUPSD_LOG_EMERG
, "cupsdDoSelect() failed - %s!",
848 for (i
= 0, con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
850 i
++, con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
851 cupsdLogMessage(CUPSD_LOG_EMERG
,
852 "Clients[%d] = %d, file = %d, state = %d",
853 i
, con
->number
, con
->file
, httpGetState(con
->http
));
855 for (i
= 0, lis
= (cupsd_listener_t
*)cupsArrayFirst(Listeners
);
857 i
++, lis
= (cupsd_listener_t
*)cupsArrayNext(Listeners
))
858 cupsdLogMessage(CUPSD_LOG_EMERG
, "Listeners[%d] = %d", i
, lis
->fd
);
860 cupsdLogMessage(CUPSD_LOG_EMERG
, "CGIPipes[0] = %d", CGIPipes
[0]);
863 cupsdLogMessage(CUPSD_LOG_EMERG
, "SysEventPipes[0] = %d",
865 #endif /* __APPLE__ */
867 for (job
= (cupsd_job_t
*)cupsArrayFirst(ActiveJobs
);
869 job
= (cupsd_job_t
*)cupsArrayNext(ActiveJobs
))
870 cupsdLogMessage(CUPSD_LOG_EMERG
, "Jobs[%d] = %d < [%d %d] > [%d %d]",
872 job
->status_buffer
? job
->status_buffer
->fd
: -1,
873 job
->print_pipes
[0], job
->print_pipes
[1],
874 job
->back_pipes
[0], job
->back_pipes
[1]);
876 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
877 for (p
= (cupsd_printer_t
*)cupsArrayFirst(Printers
);
879 p
= (cupsd_printer_t
*)cupsArrayNext(Printers
))
880 cupsdLogMessage(CUPSD_LOG_EMERG
, "printer[%s] reg_name=\"%s\"", p
->name
,
881 p
->reg_name
? p
->reg_name
: "(null)");
882 #endif /* HAVE_DNSSD || HAVE_AVAHI */
887 current_time
= time(NULL
);
890 * Write dirty config/state files...
893 if (DirtyCleanTime
&& current_time
>= DirtyCleanTime
)
898 * If we are going to sleep and still have pending jobs, stop them after
899 * a period of time...
902 if (SleepJobs
> 0 && current_time
>= SleepJobs
&&
903 cupsArrayCount(PrintingJobs
) > 0)
906 cupsdStopAllJobs(CUPSD_JOB_DEFAULT
, 5);
908 #endif /* __APPLE__ */
912 * Update the network interfaces once a minute...
915 if ((current_time
- netif_time
) >= 60)
917 netif_time
= current_time
;
920 #endif /* !__APPLE__ */
924 * If no other work was scheduled and we're being controlled by launchd,
925 * systemd, or upstart then timeout after 'LaunchdTimeout' seconds of
929 if (!fds
&& service_idle_exit
)
931 cupsdLogMessage(CUPSD_LOG_INFO
,
932 "Printer sharing is off and there are no jobs pending, "
933 "will restart on demand.");
937 #endif /* HAVE_ONDEMAND */
940 * Resume listening for new connections as needed...
943 if (ListeningPaused
&& ListeningPaused
<= current_time
&&
944 cupsArrayCount(Clients
) < MaxClients
)
945 cupsdResumeListening();
948 * Expire subscriptions and unload completed jobs as needed...
951 if (current_time
> expire_time
)
953 if (cupsArrayCount(Subscriptions
) > 0)
954 cupsdExpireSubscriptions(NULL
, NULL
);
956 cupsdUnloadCompletedJobs();
958 expire_time
= current_time
;
962 * Delete stale local printers...
965 if (current_time
>= local_timeout
)
967 cupsdDeleteTemporaryPrinters(0);
971 #ifndef HAVE_AUTHORIZATION_H
973 * Update the root certificate once every 5 minutes if we have client
977 if ((current_time
- RootCertTime
) >= RootCertDuration
&& RootCertDuration
&&
978 !RunUser
&& cupsArrayCount(Clients
))
981 * Update the root certificate...
985 cupsdAddCert(0, "root", cupsdDefaultAuthType());
987 #endif /* !HAVE_AUTHORIZATION_H */
990 * Check for new data on the client sockets...
993 for (con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
995 con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
998 * Process pending data in the input buffer...
1001 if (httpGetReady(con
->http
))
1003 cupsdReadClient(con
);
1008 * Check the activity and close old clients...
1011 activity
= current_time
- Timeout
;
1012 if (httpGetActivity(con
->http
) < activity
&& !con
->pipe_pid
)
1014 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Closing client %d after %d seconds of inactivity.", con
->number
, Timeout
);
1016 cupsdCloseClient(con
);
1022 * Update any pending multi-file documents...
1025 if ((current_time
- senddoc_time
) >= 10)
1028 senddoc_time
= current_time
;
1032 * Clean job history...
1035 if (JobHistoryUpdate
&& current_time
>= JobHistoryUpdate
)
1039 * Log statistics at most once a minute when in debug mode...
1042 if ((current_time
- report_time
) >= 60 && LogLevel
>= CUPSD_LOG_DEBUG
)
1044 size_t string_count
, /* String count */
1045 alloc_bytes
, /* Allocated string bytes */
1046 total_bytes
; /* Total string bytes */
1047 #ifdef HAVE_MALLINFO
1048 struct mallinfo mem
; /* Malloc information */
1052 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: malloc-arena=%lu", mem
.arena
);
1053 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: malloc-used=%lu",
1054 mem
.usmblks
+ mem
.uordblks
);
1055 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: malloc-free=%lu",
1056 mem
.fsmblks
+ mem
.fordblks
);
1057 #endif /* HAVE_MALLINFO */
1059 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: clients=%d",
1060 cupsArrayCount(Clients
));
1061 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: jobs=%d",
1062 cupsArrayCount(Jobs
));
1063 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: jobs-active=%d",
1064 cupsArrayCount(ActiveJobs
));
1065 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Report: printers=%d",
1066 cupsArrayCount(Printers
));
1068 string_count
= _cupsStrStatistics(&alloc_bytes
, &total_bytes
);
1069 cupsdLogMessage(CUPSD_LOG_DEBUG
,
1070 "Report: stringpool-string-count=" CUPS_LLFMT
,
1071 CUPS_LLCAST string_count
);
1072 cupsdLogMessage(CUPSD_LOG_DEBUG
,
1073 "Report: stringpool-alloc-bytes=" CUPS_LLFMT
,
1074 CUPS_LLCAST alloc_bytes
);
1075 cupsdLogMessage(CUPSD_LOG_DEBUG
,
1076 "Report: stringpool-total-bytes=" CUPS_LLFMT
,
1077 CUPS_LLCAST total_bytes
);
1079 report_time
= current_time
;
1083 * Handle OS-specific event notification for any events that have
1084 * accumulated. Don't send these more than once a second...
1087 if (LastEvent
&& (current_time
- event_time
) >= 1)
1089 #ifdef HAVE_NOTIFY_POST
1090 if (LastEvent
& (CUPSD_EVENT_PRINTER_ADDED
|
1091 CUPSD_EVENT_PRINTER_DELETED
|
1092 CUPSD_EVENT_PRINTER_MODIFIED
))
1094 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
1095 "notify_post(\"com.apple.printerListChange\")");
1096 notify_post("com.apple.printerListChange");
1099 if (LastEvent
& CUPSD_EVENT_PRINTER_STATE_CHANGED
)
1101 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
1102 "notify_post(\"com.apple.printerHistoryChange\")");
1103 notify_post("com.apple.printerHistoryChange");
1106 if (LastEvent
& (CUPSD_EVENT_JOB_STATE_CHANGED
|
1107 CUPSD_EVENT_JOB_CONFIG_CHANGED
|
1108 CUPSD_EVENT_JOB_PROGRESS
))
1110 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
1111 "notify_post(\"com.apple.jobChange\")");
1112 notify_post("com.apple.jobChange");
1114 #endif /* HAVE_NOTIFY_POST */
1117 * Reset the accumulated events...
1120 LastEvent
= CUPSD_EVENT_NONE
;
1121 event_time
= current_time
;
1126 * Log a message based on what happened...
1131 cupsdLogMessage(CUPSD_LOG_INFO
, "Scheduler shutting down normally.");
1132 cupsdAddEvent(CUPSD_EVENT_SERVER_STOPPED
, NULL
, NULL
,
1133 "Scheduler shutting down normally.");
1137 cupsdLogMessage(CUPSD_LOG_ERROR
,
1138 "Scheduler shutting down due to program error.");
1139 cupsdAddEvent(CUPSD_EVENT_SERVER_STOPPED
, NULL
, NULL
,
1140 "Scheduler shutting down due to program error.");
1144 * Close all network clients...
1152 * Update the KeepAlive/PID file as needed...
1155 service_checkout(1);
1164 * Delete all temporary printers...
1167 cupsdDeleteTemporaryPrinters(1);
1171 * Stop monitoring system event monitoring...
1175 cupsdStopSystemMonitor();
1176 #endif /* __APPLE__ */
1180 return (!stop_scheduler
);
1185 * 'cupsdAddString()' - Copy and add a string to an array.
1188 int /* O - 1 on success, 0 on failure */
1189 cupsdAddString(cups_array_t
**a
, /* IO - String array */
1190 const char *s
) /* I - String to copy and add */
1193 *a
= cupsArrayNew3((cups_array_func_t
)strcmp
, NULL
,
1194 (cups_ahash_func_t
)NULL
, 0,
1195 (cups_acopy_func_t
)strdup
,
1196 (cups_afree_func_t
)free
);
1198 return (cupsArrayAdd(*a
, (char *)s
));
1203 * 'cupsdCheckProcess()' - Tell the main loop to check for dead children.
1207 cupsdCheckProcess(void)
1210 * Flag that we have dead children...
1218 * 'cupsdClearString()' - Clear a string.
1222 cupsdClearString(char **s
) /* O - String value */
1233 * 'cupsdFreeStrings()' - Free an array of strings.
1237 cupsdFreeStrings(cups_array_t
**a
) /* IO - String array */
1241 cupsArrayDelete(*a
);
1248 * 'cupsdHoldSignals()' - Hold child and termination signals.
1252 cupsdHoldSignals(void)
1254 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
1255 sigset_t newmask
; /* New POSIX signal mask */
1256 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */
1266 #elif defined(HAVE_SIGACTION)
1267 sigemptyset(&newmask
);
1268 sigaddset(&newmask
, SIGTERM
);
1269 sigaddset(&newmask
, SIGCHLD
);
1270 sigprocmask(SIG_BLOCK
, &newmask
, &holdmask
);
1271 #endif /* HAVE_SIGSET */
1276 * 'cupsdReleaseSignals()' - Release signals for delivery.
1280 cupsdReleaseSignals(void)
1289 #elif defined(HAVE_SIGACTION)
1290 sigprocmask(SIG_SETMASK
, &holdmask
, NULL
);
1291 #endif /* HAVE_SIGSET */
1296 * 'cupsdSetString()' - Set a string value.
1300 cupsdSetString(char **s
, /* O - New string */
1301 const char *v
) /* I - String value */
1317 * 'cupsdSetStringf()' - Set a formatted string value.
1321 cupsdSetStringf(char **s
, /* O - New string */
1322 const char *f
, /* I - Printf-style format string */
1323 ...) /* I - Additional args as needed */
1325 char v
[65536 + 64]; /* Formatting string value */
1326 va_list ap
; /* Argument pointer */
1327 char *olds
; /* Old string */
1338 vsnprintf(v
, sizeof(v
), f
, ap
);
1352 * 'parent_handler()' - Catch USR1/CHLD signals...
1356 parent_handler(int sig
) /* I - Signal */
1359 * Store the signal we got from the OS and return...
1362 parent_signal
= sig
;
1367 * 'process_children()' - Process all dead children...
1371 process_children(void)
1373 int status
; /* Exit status of child */
1374 int pid
, /* Process ID of child */
1375 job_id
; /* Job ID of child */
1376 cupsd_job_t
*job
; /* Current job */
1377 int i
; /* Looping var */
1378 char name
[1024]; /* Process name */
1379 const char *type
; /* Type of program */
1382 cupsdLogMessage(CUPSD_LOG_DEBUG2
, "process_children()");
1385 * Reset the dead_children flag...
1391 * Collect the exit status of some children...
1395 while ((pid
= waitpid(-1, &status
, WNOHANG
)) > 0)
1396 #elif defined(HAVE_WAIT3)
1397 while ((pid
= wait3(&status
, WNOHANG
, NULL
)) > 0)
1399 if ((pid
= wait(&status
)) > 0)
1400 #endif /* HAVE_WAITPID */
1403 * Collect the name of the process that finished...
1406 cupsdFinishProcess(pid
, name
, sizeof(name
), &job_id
);
1409 * Delete certificates for CGI processes...
1413 cupsdDeleteCert(pid
);
1416 * Handle completed job filters...
1420 job
= cupsdFindJob(job_id
);
1426 for (i
= 0; job
->filters
[i
]; i
++)
1427 if (job
->filters
[i
] == pid
)
1430 if (job
->filters
[i
] || job
->backend
== pid
)
1433 * OK, this process has gone away; what's left?
1436 if (job
->filters
[i
])
1438 job
->filters
[i
] = -pid
;
1443 job
->backend
= -pid
;
1447 if (status
&& status
!= SIGTERM
&& status
!= SIGKILL
&&
1451 * An error occurred; save the exit status so we know to stop
1452 * the printer or cancel the job when all of the filters finish...
1454 * A negative status indicates that the backend failed and the
1455 * printer needs to be stopped.
1457 * In order to preserve the most serious status, we always log
1458 * when a process dies due to a signal (e.g. SIGABRT, SIGSEGV,
1459 * and SIGBUS) and prefer to log the backend exit status over a
1463 int old_status
= abs(job
->status
);
1465 if (WIFSIGNALED(status
) || /* This process crashed, or */
1466 !job
->status
|| /* No process had a status, or */
1467 (!job
->filters
[i
] && WIFEXITED(old_status
)))
1468 { /* Backend and filter didn't crash */
1469 if (job
->filters
[i
])
1470 job
->status
= status
; /* Filter failed */
1472 job
->status
= -status
; /* Backend failed */
1475 if (job
->state_value
== IPP_JOB_PROCESSING
&&
1476 job
->status_level
> CUPSD_LOG_ERROR
&&
1477 (job
->filters
[i
] || !WIFEXITED(status
)))
1479 char message
[1024]; /* New printer-state-message */
1482 job
->status_level
= CUPSD_LOG_ERROR
;
1484 snprintf(message
, sizeof(message
), "%s failed", type
);
1488 strlcpy(job
->printer
->state_message
, message
,
1489 sizeof(job
->printer
->state_message
));
1495 if (!job
->printer_message
&& job
->attrs
)
1497 if ((job
->printer_message
=
1498 ippFindAttribute(job
->attrs
, "job-printer-state-message",
1499 IPP_TAG_TEXT
)) == NULL
)
1500 job
->printer_message
= ippAddString(job
->attrs
, IPP_TAG_JOB
,
1502 "job-printer-state-message",
1506 if (job
->printer_message
)
1507 ippSetString(job
->attrs
, &job
->printer_message
, 0, message
);
1512 * If this is not the last file in a job, see if all of the
1513 * filters are done, and if so move to the next file.
1516 if (job
->state_value
>= IPP_JOB_CANCELED
)
1519 * Remove the job from the active list if there are no processes still
1523 for (i
= 0; job
->filters
[i
] < 0; i
++);
1525 if (!job
->filters
[i
] && job
->backend
<= 0)
1526 cupsArrayRemove(ActiveJobs
, job
);
1528 else if (job
->current_file
< job
->num_files
&& job
->printer
)
1530 for (i
= 0; job
->filters
[i
] < 0; i
++);
1532 if (!job
->filters
[i
] &&
1533 (!job
->printer
->pc
|| !job
->printer
->pc
->single_file
||
1537 * Process the next file...
1540 cupsdContinueJob(job
);
1547 * Show the exit status as needed, ignoring SIGTERM and SIGKILL errors
1548 * since they come when we kill/end a process...
1551 if (status
== SIGTERM
|| status
== SIGKILL
)
1553 cupsdLogJob(job
, CUPSD_LOG_DEBUG
,
1554 "PID %d (%s) was terminated normally with signal %d.", pid
,
1557 else if (status
== SIGPIPE
)
1559 cupsdLogJob(job
, CUPSD_LOG_DEBUG
,
1560 "PID %d (%s) did not catch or ignore signal %d.", pid
, name
,
1565 if (WIFEXITED(status
))
1567 int code
= WEXITSTATUS(status
); /* Exit code */
1570 cupsdLogJob(job
, CUPSD_LOG_DEBUG
,
1571 "PID %d (%s) stopped with status %d (%s)", pid
, name
,
1572 code
, strerror(code
- 100));
1574 cupsdLogJob(job
, CUPSD_LOG_DEBUG
,
1575 "PID %d (%s) stopped with status %d.", pid
, name
, code
);
1578 cupsdLogJob(job
, CUPSD_LOG_DEBUG
, "PID %d (%s) crashed on signal %d.",
1579 pid
, name
, WTERMSIG(status
));
1581 if (LogLevel
< CUPSD_LOG_DEBUG
)
1582 cupsdLogJob(job
, CUPSD_LOG_INFO
,
1583 "Hint: Try setting the LogLevel to \"debug\" to find out "
1587 cupsdLogJob(job
, CUPSD_LOG_DEBUG
, "PID %d (%s) exited with no errors.",
1592 * If wait*() is interrupted by a signal, tell main() to call us again...
1595 if (pid
< 0 && errno
== EINTR
)
1601 * 'select_timeout()' - Calculate the select timeout value.
1605 static long /* O - Number of seconds */
1606 select_timeout(int fds
) /* I - Number of descriptors returned */
1608 long timeout
; /* Timeout for select */
1609 time_t now
; /* Current time */
1610 cupsd_client_t
*con
; /* Client information */
1611 cupsd_job_t
*job
; /* Job information */
1612 cupsd_printer_t
*printer
; /* Printer information */
1613 const char *why
; /* Debugging aid */
1616 cupsdLogMessage(CUPSD_LOG_DEBUG2
, "select_timeout: JobHistoryUpdate=%ld",
1617 (long)JobHistoryUpdate
);
1620 * Check to see if any of the clients have pending data to be
1621 * processed; if so, the timeout should be 0...
1624 for (con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
1626 con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
1627 if (httpGetReady(con
->http
))
1631 * If select has been active in the last second (fds > 0) or we have
1632 * many resources in use then don't bother trying to optimize the
1633 * timeout, just make it 1 second.
1636 if (fds
> 0 || cupsArrayCount(Clients
) > 50)
1640 * Otherwise, check all of the possible events that we need to wake for...
1644 timeout
= now
+ 86400; /* 86400 == 1 day */
1649 * When going to sleep, wake up to abort jobs that don't complete in time.
1652 if (SleepJobs
> 0 && SleepJobs
< timeout
)
1654 timeout
= SleepJobs
;
1655 why
= "abort jobs before sleeping";
1657 #endif /* __APPLE__ */
1660 * Check whether we are accepting new connections...
1663 if (ListeningPaused
> 0 && cupsArrayCount(Clients
) < MaxClients
&&
1664 ListeningPaused
< timeout
)
1666 if (ListeningPaused
<= now
)
1669 timeout
= ListeningPaused
;
1671 why
= "resume listening";
1675 * Check the activity and close old clients...
1678 for (con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
1680 con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
1681 if ((httpGetActivity(con
->http
) + Timeout
) < timeout
)
1683 timeout
= httpGetActivity(con
->http
) + Timeout
;
1684 why
= "timeout a client connection";
1688 * Write out changes to configuration and state files...
1691 if (DirtyCleanTime
&& timeout
> DirtyCleanTime
)
1693 timeout
= DirtyCleanTime
;
1694 why
= "write dirty config/state files";
1698 * Check for any job activity...
1701 if (JobHistoryUpdate
&& timeout
> JobHistoryUpdate
)
1703 timeout
= JobHistoryUpdate
;
1704 why
= "update job history";
1707 for (job
= (cupsd_job_t
*)cupsArrayFirst(ActiveJobs
);
1709 job
= (cupsd_job_t
*)cupsArrayNext(ActiveJobs
))
1711 if (job
->cancel_time
&& job
->cancel_time
< timeout
)
1713 timeout
= job
->cancel_time
;
1714 why
= "cancel stuck jobs";
1717 if (job
->kill_time
&& job
->kill_time
< timeout
)
1719 timeout
= job
->kill_time
;
1720 why
= "kill unresponsive jobs";
1723 if (job
->state_value
== IPP_JOB_HELD
&& job
->hold_until
< timeout
)
1725 timeout
= job
->hold_until
;
1726 why
= "release held jobs";
1729 if (job
->state_value
== IPP_JOB_PENDING
&& timeout
> (now
+ 10))
1732 why
= "start pending jobs";
1738 * Check for temporary printers that need to be deleted...
1741 for (printer
= (cupsd_printer_t
*)cupsArrayFirst(Printers
); printer
; printer
= (cupsd_printer_t
*)cupsArrayNext(Printers
))
1743 if (printer
->temporary
&& !printer
->job
&& (!local_timeout
|| local_timeout
> (printer
->state_time
+ 60)))
1744 local_timeout
= printer
->state_time
+ 60;
1747 if (timeout
> local_timeout
&& local_timeout
)
1749 timeout
= local_timeout
;
1750 why
= "delete stale local printers";
1754 * Adjust from absolute to relative time. We add 1 second to the timeout since
1755 * events occur after the timeout expires, and limit the timeout to 86400
1756 * seconds (1 day) to avoid select() timeout limits present on some operating
1760 timeout
= timeout
- now
+ 1;
1764 else if (timeout
> 86400)
1768 * Log and return the timeout value...
1771 cupsdLogMessage(CUPSD_LOG_DEBUG2
, "select_timeout(%d): %ld seconds to %s",
1779 * 'sigchld_handler()' - Handle 'child' signals from old processes.
1783 sigchld_handler(int sig
) /* I - Signal number */
1788 * Flag that we have dead children...
1794 * Reset the signal handler as needed...
1797 #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION)
1798 signal(SIGCLD
, sigchld_handler
);
1799 #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */
1804 * 'sighup_handler()' - Handle 'hangup' signals to reconfigure the scheduler.
1808 sighup_handler(int sig
) /* I - Signal number */
1812 NeedReload
= RELOAD_ALL
;
1813 ReloadTime
= time(NULL
);
1815 #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION)
1816 signal(SIGHUP
, sighup_handler
);
1817 #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */
1822 * 'sigterm_handler()' - Handle 'terminate' signals that stop the scheduler.
1826 sigterm_handler(int sig
) /* I - Signal number */
1828 (void)sig
; /* remove compiler warnings... */
1831 * Flag that we should stop and return...
1838 #ifdef HAVE_ONDEMAND
1840 * 'service_add_listener()' - Bind an open fd as a Listener.
1844 service_add_listener(int fd
, /* I - Socket file descriptor */
1845 int idx
) /* I - Listener number, for logging */
1847 cupsd_listener_t
*lis
; /* Listeners array */
1848 http_addr_t addr
; /* Address variable */
1849 socklen_t addrlen
; /* Length of address */
1850 char s
[256]; /* String addresss */
1853 addrlen
= sizeof(addr
);
1855 if (getsockname(fd
, (struct sockaddr
*)&addr
, &addrlen
))
1857 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_add_listener: Unable to get local address for listener #%d: %s", idx
+ 1, strerror(errno
));
1861 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_add_listener: Listener #%d at fd %d, \"%s\".", idx
+ 1, fd
, httpAddrString(&addr
, s
, sizeof(s
)));
1864 * Try to match the on-demand socket address to one of the listeners...
1867 for (lis
= (cupsd_listener_t
*)cupsArrayFirst(Listeners
);
1869 lis
= (cupsd_listener_t
*)cupsArrayNext(Listeners
))
1870 if (httpAddrEqual(&lis
->address
, &addr
))
1874 * Add a new listener If there's no match...
1879 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_add_listener: Matched existing listener #%d to %s.", idx
+ 1, httpAddrString(&(lis
->address
), s
, sizeof(s
)));
1883 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_add_listener: Adding new listener #%d for %s.", idx
+ 1, httpAddrString(&addr
, s
, sizeof(s
)));
1885 if ((lis
= calloc(1, sizeof(cupsd_listener_t
))) == NULL
)
1887 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_add_listener: Unable to allocate listener: %s.", strerror(errno
));
1892 cupsArrayAdd(Listeners
, lis
);
1894 memcpy(&lis
->address
, &addr
, sizeof(lis
->address
));
1901 if (httpAddrPort(&(lis
->address
)) == 443)
1902 lis
->encryption
= HTTP_ENCRYPT_ALWAYS
;
1903 # endif /* HAVE_SSL */
1905 #endif /* HAVE_ONDEMAND */
1909 * 'service_checkin()' - Check-in with launchd and collect the listening fds.
1913 service_checkin(void)
1915 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_checkin: pid=%d", (int)getpid());
1920 int error
; /* Check-in error, if any */
1921 size_t i
, /* Looping var */
1922 count
; /* Number of listeners */
1923 int *ld_sockets
; /* Listener sockets */
1926 * Check-in with launchd...
1929 if ((error
= launch_activate_socket("Listeners", &ld_sockets
, &count
)) != 0)
1931 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: Unable to get listener sockets: %s", strerror(error
));
1933 return; /* anti-compiler-warning */
1937 * Try to match the launchd sockets to the cupsd listeners...
1940 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_checkin: %d listeners.", (int)count
);
1942 for (i
= 0; i
< count
; i
++)
1943 service_add_listener(ld_sockets
[i
], (int)i
);
1948 #elif defined(HAVE_SYSTEMD)
1951 int i
, /* Looping var */
1952 count
; /* Number of listeners */
1955 * Check-in with systemd...
1958 if ((count
= sd_listen_fds(0)) < 0)
1960 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: Unable to get listener sockets: %s", strerror(-count
));
1962 return; /* anti-compiler-warning */
1966 * Try to match the systemd sockets to the cupsd listeners...
1969 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_checkin: %d listeners.", count
);
1971 for (i
= 0; i
< count
; i
++)
1972 service_add_listener(SD_LISTEN_FDS_START
+ i
, i
);
1975 #elif defined(HAVE_UPSTART)
1978 const char *e
; /* Environment var */
1979 int fd
; /* File descriptor */
1982 if (!(e
= getenv("UPSTART_EVENTS")))
1984 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: We did not get started via Upstart.");
1989 if (strcasecmp(e
, "socket"))
1991 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: We did not get triggered via an Upstart socket event.");
1996 if ((e
= getenv("UPSTART_FDS")) == NULL
)
1998 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: Unable to get listener sockets from UPSTART_FDS.");
2003 cupsdLogMessage(CUPSD_LOG_DEBUG
, "service_checkin: UPSTART_FDS=%s", e
);
2005 fd
= (int)strtol(e
, NULL
, 10);
2008 cupsdLogMessage(CUPSD_LOG_ERROR
, "service_checkin: Could not parse UPSTART_FDS: %s", strerror(errno
));
2014 * Upstart only supportst a single on-demand socket file descriptor...
2017 service_add_listener(fd
, 0);
2019 #endif /* HAVE_LAUNCHD */
2024 * 'service_checkout()' - Update the KeepAlive/PID file as needed.
2028 service_checkout(int shutdown
) /* I - Shutting down? */
2030 cups_file_t
*fp
; /* File */
2031 char pidfile
[1024]; /* PID/KeepAlive file */
2035 * When running on-demand, use the KeepAlive file, otherwise write a PID file
2039 #ifdef HAVE_ONDEMAND
2042 strlcpy(pidfile
, CUPS_KEEPALIVE
, sizeof(pidfile
));
2044 if (cupsArrayCount(ActiveJobs
) || /* Active jobs */
2045 WebInterface
|| /* Web interface enabled */
2046 NeedReload
|| /* Doing a reload */
2047 (Browsing
&& BrowseLocalProtocols
&& cupsArrayCount(Printers
)))
2048 /* Printers being shared */
2051 * Create or remove the "keep-alive" file based on whether there are active
2052 * jobs or shared printers to advertise...
2059 #endif /* HAVE_ONDEMAND */
2060 snprintf(pidfile
, sizeof(pidfile
), "%s/cupsd.pid", StateDir
);
2064 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Removing KeepAlive/PID file \"%s\".", pidfile
);
2070 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Creating KeepAlive/PID file \"%s\".", pidfile
);
2072 if ((fp
= cupsFileOpen(pidfile
, "w")) != NULL
)
2075 * Save the PID in the file...
2078 cupsFilePrintf(fp
, "%d\n", (int)getpid());
2082 cupsdLogMessage(CUPSD_LOG_ERROR
, "Unable to create KeepAlive/PID file \"%s\": %s", pidfile
, strerror(errno
));
2088 * 'usage()' - Show scheduler usage.
2092 usage(int status
) /* O - Exit status */
2094 FILE *fp
= status
? stderr
: stdout
; /* Output file */
2097 _cupsLangPuts(fp
, _("Usage: cupsd [options]"));
2098 _cupsLangPuts(fp
, _("Options:"));
2099 _cupsLangPuts(fp
, _(" -c cupsd.conf Set cupsd.conf file to use."));
2100 _cupsLangPuts(fp
, _(" -f Run in the foreground."));
2101 _cupsLangPuts(fp
, _(" -F Run in the foreground but detach from console."));
2102 _cupsLangPuts(fp
, _(" -h Show this usage message."));
2103 #ifdef HAVE_ONDEMAND
2104 _cupsLangPuts(fp
, _(" -l Run cupsd on demand."));
2105 #endif /* HAVE_ONDEMAND */
2106 _cupsLangPuts(fp
, _(" -s cups-files.conf Set cups-files.conf file to use."));
2107 _cupsLangPuts(fp
, _(" -t Test the configuration file."));