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 | man pages section 3: Basic Library Functions Oracle Solaris 11 Information Library |
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| man pages section 3: Basic Library Functions Oracle Solaris 11 Information Library |
enable_extended_FILE_stdio(3C)
posix_spawnattr_getschedparam(3C)
posix_spawnattr_getschedpolicy(3C)
posix_spawnattr_getsigdefault(3C)
posix_spawnattr_getsigignore_np(3C)
posix_spawnattr_getsigmask(3C)
posix_spawnattr_setschedparam(3C)
posix_spawnattr_setschedpolicy(3C)
posix_spawnattr_setsigdefault(3C)
posix_spawnattr_setsigignore_np(3C)
posix_spawnattr_setsigmask(3C)
posix_spawn_file_actions_addclose(3C)
posix_spawn_file_actions_addclosefrom_np(3C)
posix_spawn_file_actions_adddup2(3C)
posix_spawn_file_actions_addopen(3C)
posix_spawn_file_actions_destroy(3C)
posix_spawn_file_actions_init(3C)
pthread_attr_getdetachstate(3C)
pthread_attr_getinheritsched(3C)
pthread_attr_getschedparam(3C)
pthread_attr_getschedpolicy(3C)
pthread_attr_setdetachstate(3C)
pthread_attr_setinheritsched(3C)
pthread_attr_setschedparam(3C)
pthread_attr_setschedpolicy(3C)
pthread_barrierattr_destroy(3C)
pthread_barrierattr_getpshared(3C)
pthread_barrierattr_setpshared(3C)
pthread_condattr_getpshared(3C)
pthread_condattr_setpshared(3C)
pthread_cond_reltimedwait_np(3C)
pthread_key_create_once_np(3C)
pthread_mutexattr_getprioceiling(3C)
pthread_mutexattr_getprotocol(3C)
pthread_mutexattr_getpshared(3C)
pthread_mutexattr_getrobust(3C)
pthread_mutexattr_setprioceiling(3C)
pthread_mutexattr_setprotocol(3C)
pthread_mutexattr_setpshared(3C)
pthread_mutexattr_setrobust(3C)
pthread_mutex_getprioceiling(3C)
pthread_mutex_reltimedlock_np(3C)
pthread_mutex_setprioceiling(3C)
pthread_rwlockattr_destroy(3C)
pthread_rwlockattr_getpshared(3C)
pthread_rwlockattr_setpshared(3C)
pthread_rwlock_reltimedrdlock_np(3C)
pthread_rwlock_reltimedwrlock_np(3C)
pthread_rwlock_timedrdlock(3C)
pthread_rwlock_timedwrlock(3C)
rctlblk_get_enforced_value(3C)
- basic daemonization function
#include <stdlib.h>intdaemon(intnochdir,intnoclose);
Thedaemon() function provides a means for applications to run in thebackground.
This function ensures that the process calling this function:
runs in the background
detaches from the controlling terminal
forms a new process group
is not a session group leader.
The arguments to this function are treated as boolean variables and areevaluated using negative logic.
If thenochdir argument is zero the working directory will be changedto the root directory (/); otherwise it will not be.
If thenoclose argument is zero the descriptors 0, 1, and 2(normally corresponding to standard input, output and error output, depending on theapplication) will be redirected to/dev/null; otherwise they will not be.
Upon successful completion,daemon() returns 0. Otherwise it returns -1 and setserrno to the values specified forfork(2),setsid(2),open(2), anddup(2).
Ifdaemon() is called withnoclose set to 0 and fails toredirect descriptors 0, 1, and 2 to/dev/null, those descriptors are notguaranteed to be the same as before the call.
Example 1 Using daemon to run a process in the background.
Themain() function of a network server could look like this:
int background; /* background flag *//* Load and verify the configuration. *//* Go into background. */if (background && daemon(0, 0) < 0) err(1, "daemon");/* Process requests here. */
Seeattributes(5) for descriptions of the following attributes:
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