| .\" Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl) |
| .\" |
| .\" %%%LICENSE_START(GPLv2+_DOC_FULL) |
| .\" This is free documentation; you can redistribute it and/or |
| .\" modify it under the terms of the GNU General Public License as |
| .\" published by the Free Software Foundation; either version 2 of |
| .\" the License, or (at your option) any later version. |
| .\" |
| .\" The GNU General Public License's references to "object code" |
| .\" and "executables" are to be interpreted as the output of any |
| .\" document formatting or typesetting system, including |
| .\" intermediate and printed output. |
| .\" |
| .\" This manual is distributed in the hope that it will be useful, |
| .\" but WITHOUT ANY WARRANTY; without even the implied warranty of |
| .\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| .\" GNU General Public License for more details. |
| .\" |
| .\" You should have received a copy of the GNU General Public |
| .\" License along with this manual; if not, see |
| .\" <http://www.gnu.org/licenses/>. |
| .\" %%%LICENSE_END |
| .\" |
| .TH POSIXOPTIONS 7 2007-12-21 "" "Linux Programmer's Manual" |
| .SH NAME |
| posixoptions \- optional parts of the POSIX standard |
| .SH DESCRIPTION |
| The POSIX standard (the information below is from POSIX.1-2001) |
| describes a set of behaviors and interfaces for a compliant system. |
| However, many interfaces are optional and there are feature test macros |
| to test the availability of interfaces at compile time, and functions |
| .BR sysconf (3), |
| .BR fpathconf (3), |
| .BR pathconf (3), |
| .BR confstr (3) |
| to do this at run time. |
| From shell scripts one can use |
| .BR getconf (1). |
| For more detail, see |
| .BR sysconf (3). |
| .LP |
| We give the name of the POSIX abbreviation, the option, the name of the |
| .BR sysconf (3) |
| parameter used to inquire about the option, and possibly |
| a very short description. |
| Much more precise detail can be found in the POSIX standard itself, |
| versions of which can nowadays be accessed freely on the web. |
| .SS ADV - _POSIX_ADVISORY_INFO - _SC_ADVISORY_INFO |
| The following advisory functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR posix_fadvise (), |
| .IR posix_fallocate (), |
| .IR posix_memalign (), |
| .IR posix_madvise (). |
| .br |
| .in -4 |
| .fi |
| .SS AIO - _POSIX_ASYNCHRONOUS_IO - _SC_ASYNCHRONOUS_IO |
| The header |
| .I <aio.h> |
| is present. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR aio_cancel (), |
| .IR aio_error (), |
| .IR aio_fsync (), |
| .IR aio_read (), |
| .IR aio_return (), |
| .IR aio_suspend (), |
| .IR aio_write (), |
| .IR lio_listio (). |
| .br |
| .in -4 |
| .fi |
| .SS BAR - _POSIX_BARRIERS - _SC_BARRIERS |
| This option implies the |
| .B _POSIX_THREADS |
| and |
| .B _POSIX_THREAD_SAFE_FUNCTIONS |
| options. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_barrier_destroy (), |
| .IR pthread_barrier_init (), |
| .IR pthread_barrier_wait (), |
| .IR pthread_barrierattr_destroy (), |
| .IR pthread_barrierattr_init (). |
| .in -4 |
| .br |
| .fi |
| .\" .SS BE |
| .\" Batch environment. |
| .\" .SS CD |
| .\" C development. |
| .SS --- - POSIX_CHOWN_RESTRICTED |
| If this option is in effect (as it always is under POSIX.1-2001), |
| then only root may change the owner of a file, and nonroot can |
| set the group of a file only to one of the groups it belongs to. |
| This affects the functions |
| .IR chown (), |
| .IR fchown (). |
| .\" What about lchown() ? |
| .SS CS - _POSIX_CLOCK_SELECTION - _SC_CLOCK_SELECTION |
| This option implies the |
| .B _POSIX_TIMERS |
| option. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_condattr_getclock (), |
| .IR pthread_condattr_setclock (), |
| .IR clock_nanosleep (). |
| .in -4 |
| |
| .fi |
| If |
| .B CLOCK_REALTIME |
| is changed by the function |
| .IR clock_settime (), |
| then this affects all timers set for an absolute time. |
| .SS CPT - _POSIX_CPUTIME - _SC_CPUTIME |
| The clockID CLOCK_PROCESS_CPUTIME_ID is supported. |
| The initial value of this clock is 0 for each process. |
| This option implies the |
| .B _POSIX_TIMERS |
| option. |
| The function |
| .IR clock_getcpuclockid () |
| is present. |
| .\" .SS FD |
| .\" Fortran development |
| .\" .SS FR |
| .\" Fortran runtime |
| .SS --- - _POSIX_FILE_LOCKING - _SC_FILE_LOCKING |
| This option has been deleted. |
| Not in final XPG6. |
| .SS FSC - _POSIX_FSYNC - _SC_FSYNC |
| The function |
| .IR fsync () |
| is present. |
| .SS IP6 - _POSIX_IPV6 - _SC_IPV6 |
| Internet Protocol Version 6 is supported. |
| .SS --- - _POSIX_JOB_CONTROL - _SC_JOB_CONTROL |
| If this option is in effect (as it always is under POSIX.1-2001), |
| then the system implements POSIX-style job control, |
| and the following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR setpgid (), |
| .IR tcdrain (), |
| .IR tcflush (), |
| .IR tcgetpgrp (), |
| .IR tcsendbreak (), |
| .IR tcsetattr (), |
| .IR tcsetpgrp (). |
| .in -4 |
| .fi |
| .SS MF - _POSIX_MAPPED_FILES - _SC_MAPPED_FILES |
| Shared memory is supported. |
| The include file |
| .I <sys/mman.h> |
| is present. |
| The following functions are present: |
| .IR mmap (), |
| .IR msync (), |
| .IR munmap (). |
| .SS ML - _POSIX_MEMLOCK - _SC_MEMLOCK |
| Shared memory can be locked into core. |
| The functions |
| .IR mlockall (), |
| .IR munlockall () |
| are present. |
| .SS MR/MLR - _POSIX_MEMLOCK_RANGE - _SC_MEMLOCK_RANGE |
| More precisely, ranges can be locked into core. |
| The functions |
| .IR mlock (), |
| .IR munlock () |
| are present. |
| .SS MPR - _POSIX_MEMORY_PROTECTION - _SC_MEMORY_PROTECTION |
| The function |
| .IR mprotect () |
| is present. |
| .SS MSG - _POSIX_MESSAGE_PASSING - _SC_MESSAGE_PASSING |
| The include file |
| .I <mqueue.h> |
| is present. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR mq_close (), |
| .IR mq_getattr (), |
| .IR mq_notify (), |
| .IR mq_open (), |
| .IR mq_receive (), |
| .IR mq_send (), |
| .IR mq_setattr (), |
| .IR mq_unlink (). |
| .br |
| .in -4 |
| .fi |
| .SS MON - _POSIX_MONOTONIC_CLOCK - _SC_MONOTONIC_CLOCK |
| .B CLOCK_MONOTONIC |
| is supported. |
| This option implies the |
| .B _POSIX_TIMERS |
| option. |
| Affected functions are |
| .nf |
| .in +4 |
| |
| .IR aio_suspend (), |
| .IR clock_getres (), |
| .IR clock_gettime (), |
| .IR clock_settime (), |
| .IR timer_create (). |
| .in -4 |
| .fi |
| .SS --- - _POSIX_MULTI_PROCESS - _SC_MULTI_PROCESS |
| This option has been deleted. |
| Not in final XPG6. |
| .\" .SS MX |
| .\" IEC 60559 Floating-Point Option. |
| .SS --- - _POSIX_NO_TRUNC |
| If this option is in effect (as it always is under POSIX.1-2001) |
| then pathname components longer than |
| .B NAME_MAX |
| are not truncated, |
| but give an error. |
| This property may be dependent on the path prefix of the component. |
| .SS PIO - _POSIX_PRIORITIZED_IO - _SC_PRIORITIZED_IO |
| This option says that one can specify priorities for asynchronous I/O. |
| This affects the functions |
| .br |
| .nf |
| .in +4 |
| |
| .IR aio_read (), |
| .IR aio_write (). |
| .in -4 |
| .fi |
| .SS PS - _POSIX_PRIORITY_SCHEDULING - _SC_PRIORITY_SCHEDULING |
| The include file |
| .I <sched.h> |
| is present. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR sched_get_priority_max (), |
| .IR sched_get_priority_min (), |
| .IR sched_getparam (), |
| .IR sched_getscheduler (), |
| .IR sched_rr_get_interval (), |
| .IR sched_setparam (), |
| .IR sched_setscheduler (), |
| .IR sched_yield (). |
| .in -4 |
| |
| .fi |
| If also |
| .B _POSIX_SPAWN |
| is in effect, then the following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR posix_spawnattr_getschedparam (), |
| .IR posix_spawnattr_getschedpolicy (), |
| .IR posix_spawnattr_setschedparam (), |
| .IR posix_spawnattr_setschedpolicy (). |
| .in -4 |
| .fi |
| .SS RS - _POSIX_RAW_SOCKETS |
| Raw sockets are supported. |
| Affected functions are |
| .IR getsockopt (), |
| .IR setsockopt (). |
| .SS --- - _POSIX_READER_WRITER_LOCKS - _SC_READER_WRITER_LOCKS |
| This option implies the |
| .B _POSIX_THREADS |
| option. |
| Conversely, |
| under POSIX.1-2001 the |
| .B _POSIX_THREADS |
| option implies this option. |
| .nf |
| The following functions are present: |
| .in +4 |
| |
| .IR pthread_rwlock_destroy (), |
| .IR pthread_rwlock_init (), |
| .IR pthread_rwlock_rdlock (), |
| .IR pthread_rwlock_tryrdlock (), |
| .IR pthread_rwlock_trywrlock (), |
| .IR pthread_rwlock_unlock (), |
| .IR pthread_rwlock_wrlock (), |
| .IR pthread_rwlockattr_destroy (), |
| .IR pthread_rwlockattr_init (). |
| .in -4 |
| .fi |
| .SS RTS - _POSIX_REALTIME_SIGNALS - _SC_REALTIME_SIGNALS |
| Realtime signals are supported. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR sigqueue (), |
| .IR sigtimedwait (), |
| .IR sigwaitinfo (). |
| .br |
| .in -4 |
| .fi |
| .SS --- - _POSIX_REGEXP - _SC_REGEXP |
| If this option is in effect (as it always is under POSIX.1-2001) |
| then POSIX regular expressions are supported |
| and the following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR regcomp (), |
| .IR regerror (), |
| .IR regexec (), |
| .IR regfree (). |
| .br |
| .in -4 |
| .fi |
| .SS --- - _POSIX_SAVED_IDS - _SC_SAVED_IDS |
| If this option is in effect (as it always is under POSIX.1-2001), |
| then a process has a saved set-user-ID and a saved set-group-ID. |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR exec (), |
| .IR kill (), |
| .IR seteuid (), |
| .IR setegid (), |
| .IR setgid (), |
| .IR setuid (). |
| .br |
| .in -4 |
| .fi |
| .\" .SS SD |
| .\" Software development |
| .SS SEM - _POSIX_SEMAPHORES - _SC_SEMAPHORES |
| The include file |
| .I <semaphore.h> |
| is present. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR sem_close (), |
| .IR sem_destroy (), |
| .IR sem_getvalue (), |
| .IR sem_init (), |
| .IR sem_open (), |
| .IR sem_post (), |
| .IR sem_trywait (), |
| .IR sem_unlink (), |
| .IR sem_wait (). |
| .br |
| .in -4 |
| .fi |
| .SS SHM - _POSIX_SHARED_MEMORY_OBJECTS - _SC_SHARED_MEMORY_OBJECTS |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR mmap (), |
| .IR munmap (), |
| .IR shm_open (), |
| .IR shm_unlink (). |
| .br |
| .in -4 |
| .fi |
| .SS --- - _POSIX_SHELL - _SC_SHELL |
| If this option is in effect (as it always is under POSIX.1-2001), |
| the function |
| .IR system () |
| is present. |
| .SS SPN - _POSIX_SPAWN - _SC_SPAWN |
| This option describes support for process creation in a context where |
| it is difficult or impossible to use |
| .IR fork (), |
| for example, because no MMU is present. |
| If |
| .B _POSIX_SPAWN |
| is in effect, then the include file |
| .I <spawn.h> |
| and the following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR posix_spawn (), |
| .IR posix_spawn_file_actions_addclose (), |
| .IR posix_spawn_file_actions_adddup2 (), |
| .IR posix_spawn_file_actions_addopen (), |
| .IR posix_spawn_file_actions_destroy (), |
| .IR posix_spawn_file_actions_init (), |
| .IR posix_spawnattr_destroy (), |
| .IR posix_spawnattr_getsigdefault (), |
| .IR posix_spawnattr_getflags (), |
| .IR posix_spawnattr_getpgroup (), |
| .IR posix_spawnattr_getsigmask (), |
| .IR posix_spawnattr_init (), |
| .IR posix_spawnattr_setsigdefault (), |
| .IR posix_spawnattr_setflags (), |
| .IR posix_spawnattr_setpgroup (), |
| .IR posix_spawnattr_setsigmask (), |
| .IR posix_spawnp (). |
| .in -4 |
| .br |
| .fi |
| If also |
| .B _POSIX_PRIORITY_SCHEDULING |
| is in effect, then |
| the following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR posix_spawnattr_getschedparam (), |
| .IR posix_spawnattr_getschedpolicy (), |
| .IR posix_spawnattr_setschedparam (), |
| .IR posix_spawnattr_setschedpolicy (). |
| .in -4 |
| .fi |
| .SS SPI - _POSIX_SPIN_LOCKS - _SC_SPIN_LOCKS |
| This option implies the |
| .B _POSIX_THREADS |
| and |
| .B _POSIX_THREAD_SAFE_FUNCTIONS |
| options. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_spin_destroy (), |
| .IR pthread_spin_init (), |
| .IR pthread_spin_lock (), |
| .IR pthread_spin_trylock (), |
| .IR pthread_spin_unlock (). |
| .in -4 |
| .br |
| .fi |
| .SS SS - _POSIX_SPORADIC_SERVER - _SC_SPORADIC_SERVER |
| The scheduling policy |
| .B SCHED_SPORADIC |
| is supported. |
| This option implies the |
| .B _POSIX_PRIORITY_SCHEDULING |
| option. |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR sched_setparam (), |
| .IR sched_setscheduler (). |
| .in -4 |
| .br |
| .fi |
| .SS SIO - _POSIX_SYNCHRONIZED_IO - _SC_SYNCHRONIZED_IO |
| Affected functions are |
| .IR open (), |
| .IR msync (), |
| .IR fsync (), |
| .IR fdatasync (). |
| .SS TSA - _POSIX_THREAD_ATTR_STACKADDR - _SC_THREAD_ATTR_STACKADDR |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_attr_getstack (), |
| .IR pthread_attr_getstackaddr (), |
| .IR pthread_attr_setstack (), |
| .IR pthread_attr_setstackaddr (). |
| .in -4 |
| .br |
| .fi |
| .SS TSS - _POSIX_THREAD_ATTR_STACKSIZE - _SC_THREAD_ATTR_STACKSIZE |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_attr_getstack (), |
| .IR pthread_attr_getstacksize (), |
| .IR pthread_attr_setstack (), |
| .IR pthread_attr_setstacksize (). |
| .in -4 |
| .br |
| .fi |
| .SS TCT - _POSIX_THREAD_CPUTIME - _SC_THREAD_CPUTIME |
| The clockID CLOCK_THREAD_CPUTIME_ID is supported. |
| This option implies the |
| .B _POSIX_TIMERS |
| option. |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_getcpuclockid (), |
| .IR clock_getres (), |
| .IR clock_gettime (), |
| .IR clock_settime (), |
| .IR timer_create (). |
| .in -4 |
| .br |
| .fi |
| .SS TPI - _POSIX_THREAD_PRIO_INHERIT - _SC_THREAD_PRIO_INHERIT |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_mutexattr_getprotocol (), |
| .IR pthread_mutexattr_setprotocol (). |
| .in -4 |
| .br |
| .fi |
| .SS TPP - _POSIX_THREAD_PRIO_PROTECT - _SC_THREAD_PRIO_PROTECT |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_mutex_getprioceiling (), |
| .IR pthread_mutex_setprioceiling (), |
| .IR pthread_mutexattr_getprioceiling (), |
| .IR pthread_mutexattr_getprotocol (), |
| .IR pthread_mutexattr_setprioceiling (), |
| .IR pthread_mutexattr_setprotocol (). |
| .in -4 |
| .br |
| .fi |
| .SS TPS - _POSIX_THREAD_PRIORITY_SCHEDULING - _SC_THREAD_PRIORITY_SCHEDULING |
| If this option is in effect, the different threads inside a process |
| can run with different priorities and/or different schedulers. |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_attr_getinheritsched (), |
| .IR pthread_attr_getschedpolicy (), |
| .IR pthread_attr_getscope (), |
| .IR pthread_attr_setinheritsched (), |
| .IR pthread_attr_setschedpolicy (), |
| .IR pthread_attr_setscope (), |
| .IR pthread_getschedparam (), |
| .IR pthread_setschedparam (), |
| .IR pthread_setschedprio (). |
| .in -4 |
| .br |
| .fi |
| .SS TSH - _POSIX_THREAD_PROCESS_SHARED - _SC_THREAD_PROCESS_SHARED |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_barrierattr_getpshared (), |
| .IR pthread_barrierattr_setpshared (), |
| .IR pthread_condattr_getpshared (), |
| .IR pthread_condattr_setpshared (), |
| .IR pthread_mutexattr_getpshared (), |
| .IR pthread_mutexattr_setpshared (), |
| .IR pthread_rwlockattr_getpshared (), |
| .IR pthread_rwlockattr_setpshared (). |
| .in -4 |
| .br |
| .fi |
| .SS TSF - _POSIX_THREAD_SAFE_FUNCTIONS - _SC_THREAD_SAFE_FUNCTIONS |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR readdir_r (), |
| .IR getgrgid_r (), |
| .IR getgrnam_r (), |
| .IR getpwnam_r (), |
| .IR getpwuid_r (), |
| .IR flockfile (), |
| .IR ftrylockfile (), |
| .IR funlockfile (), |
| .IR getc_unlocked (), |
| .IR getchar_unlocked (), |
| .IR putc_unlocked (), |
| .IR putchar_unlocked (), |
| .IR rand_r (), |
| .IR strerror_r (), |
| .IR strtok_r (), |
| .IR asctime_r (), |
| .IR ctime_r (), |
| .IR gmtime_r (), |
| .IR localtime_r (). |
| .in -4 |
| .br |
| .fi |
| .SS TSP - _POSIX_THREAD_SPORADIC_SERVER - _SC_THREAD_SPORADIC_SERVER |
| This option implies the |
| .B _POSIX_THREAD_PRIORITY_SCHEDULING |
| option. |
| Affected functions are |
| .br |
| .nf |
| .in +4 |
| |
| .IR sched_getparam (), |
| .IR sched_setparam (), |
| .IR sched_setscheduler (). |
| .in -4 |
| .br |
| .fi |
| .SS THR - _POSIX_THREADS - _SC_THREADS |
| Basic support for POSIX threads is available. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR pthread_atfork (), |
| .IR pthread_attr_destroy (), |
| .IR pthread_attr_getdetachstate (), |
| .IR pthread_attr_getschedparam (), |
| .IR pthread_attr_init (), |
| .IR pthread_attr_setdetachstate (), |
| .IR pthread_attr_setschedparam (), |
| .IR pthread_cancel (), |
| .IR pthread_cleanup_push (), |
| .IR pthread_cleanup_pop (), |
| .IR pthread_cond_broadcast (), |
| .IR pthread_cond_destroy (), |
| .IR pthread_cond_init (), |
| .IR pthread_cond_signal (), |
| .IR pthread_cond_timedwait (), |
| .IR pthread_cond_wait (), |
| .IR pthread_condattr_destroy (), |
| .IR pthread_condattr_init (), |
| .IR pthread_create (), |
| .IR pthread_detach (), |
| .IR pthread_equal (), |
| .IR pthread_exit (), |
| .IR pthread_getspecific (), |
| .IR pthread_join (), |
| .IR pthread_key_create (), |
| .IR pthread_key_delete (), |
| .IR pthread_mutex_destroy (), |
| .IR pthread_mutex_init (), |
| .IR pthread_mutex_lock (), |
| .IR pthread_mutex_trylock (), |
| .IR pthread_mutex_unlock (), |
| .IR pthread_mutexattr_destroy (), |
| .IR pthread_mutexattr_init (), |
| .IR pthread_once (), |
| .IR pthread_rwlock_destroy (), |
| .IR pthread_rwlock_init (), |
| .IR pthread_rwlock_rdlock (), |
| .IR pthread_rwlock_tryrdlock (), |
| .IR pthread_rwlock_trywrlock (), |
| .IR pthread_rwlock_unlock (), |
| .IR pthread_rwlock_wrlock (), |
| .IR pthread_rwlockattr_destroy (), |
| .IR pthread_rwlockattr_init (), |
| .IR pthread_self (), |
| .IR pthread_setcancelstate (), |
| .IR pthread_setcanceltype (), |
| .IR pthread_setspecific (), |
| .IR pthread_testcancel (). |
| .in -4 |
| .br |
| .fi |
| .SS TMO - _POSIX_TIMEOUTS - _SC_TIMEOUTS |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR mq_timedreceive (), |
| .IR mq_timedsend (), |
| .IR pthread_mutex_timedlock (), |
| .IR pthread_rwlock_timedrdlock (), |
| .IR pthread_rwlock_timedwrlock (), |
| .IR sem_timedwait (), |
| .IR posix_trace_timedgetnext_event (). |
| .in -4 |
| .br |
| .fi |
| .SS TMR - _POSIX_TIMERS - _SC_TIMERS |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR clock_getres (), |
| .IR clock_gettime (), |
| .IR clock_settime (), |
| .IR nanosleep (), |
| .IR timer_create (), |
| .IR timer_delete (), |
| .IR timer_gettime (), |
| .IR timer_getoverrun (), |
| .IR timer_settime (). |
| .in -4 |
| .br |
| .fi |
| .SS TRC - _POSIX_TRACE - _SC_TRACE |
| POSIX tracing is available. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR posix_trace_attr_destroy (), |
| .IR posix_trace_attr_getclockres (), |
| .IR posix_trace_attr_getcreatetime (), |
| .IR posix_trace_attr_getgenversion (), |
| .IR posix_trace_attr_getmaxdatasize (), |
| .IR posix_trace_attr_getmaxsystemeventsize (), |
| .IR posix_trace_attr_getmaxusereventsize (), |
| .IR posix_trace_attr_getname (), |
| .IR posix_trace_attr_getstreamfullpolicy (), |
| .IR posix_trace_attr_getstreamsize (), |
| .IR posix_trace_attr_init (), |
| .IR posix_trace_attr_setmaxdatasize (), |
| .IR posix_trace_attr_setname (), |
| .IR posix_trace_attr_setstreamsize (), |
| .IR posix_trace_attr_setstreamfullpolicy (), |
| .IR posix_trace_clear (), |
| .IR posix_trace_create (), |
| .IR posix_trace_event (), |
| .IR posix_trace_eventid_equal (), |
| .IR posix_trace_eventid_get_name (), |
| .IR posix_trace_eventid_open (), |
| .IR posix_trace_eventtypelist_getnext_id (), |
| .IR posix_trace_eventtypelist_rewind (), |
| .IR posix_trace_flush (), |
| .IR posix_trace_get_attr (), |
| .IR posix_trace_get_status (), |
| .IR posix_trace_getnext_event (), |
| .IR posix_trace_shutdown (), |
| .IR posix_trace_start (), |
| .IR posix_trace_stop (), |
| .IR posix_trace_trygetnext_event (). |
| .in -4 |
| .br |
| .fi |
| .SS TEF - _POSIX_TRACE_EVENT_FILTER - _SC_TRACE_EVENT_FILTER |
| This option implies the |
| .B _POSIX_TRACE |
| option. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR posix_trace_eventset_add (), |
| .IR posix_trace_eventset_del (), |
| .IR posix_trace_eventset_empty (), |
| .IR posix_trace_eventset_fill (), |
| .IR posix_trace_eventset_ismember (), |
| .IR posix_trace_get_filter (), |
| .IR posix_trace_set_filter (), |
| .IR posix_trace_trid_eventid_open (). |
| .in -4 |
| .br |
| .fi |
| .SS TRI - _POSIX_TRACE_INHERIT - _SC_TRACE_INHERIT |
| Tracing children of the traced process is supported. |
| This option implies the |
| .B _POSIX_TRACE |
| option. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR posix_trace_attr_getinherited (), |
| .IR posix_trace_attr_setinherited (). |
| .in -4 |
| .br |
| .fi |
| .SS TRL - _POSIX_TRACE_LOG - _SC_TRACE_LOG |
| This option implies the |
| .B _POSIX_TRACE |
| option. |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR posix_trace_attr_getlogfullpolicy (), |
| .IR posix_trace_attr_getlogsize (), |
| .IR posix_trace_attr_setlogfullpolicy (), |
| .IR posix_trace_attr_setlogsize (), |
| .IR posix_trace_close (), |
| .IR posix_trace_create_withlog (), |
| .IR posix_trace_open (), |
| .IR posix_trace_rewind (). |
| .in -4 |
| .br |
| .fi |
| .SS TYM - _POSIX_TYPED_MEMORY_OBJECTS - _SC_TYPED_MEMORY_OBJECT |
| The following functions are present: |
| .br |
| .nf |
| .in +4 |
| |
| .IR posix_mem_offset (), |
| .IR posix_typed_mem_get_info (), |
| .IR posix_typed_mem_open (). |
| .in -4 |
| .br |
| .fi |
| .SS --- - _POSIX_VDISABLE |
| Always present (probably 0). |
| Value to set a changeable special control |
| character to indicate that it is disabled. |
| .SH XOPEN EXTENSIONS |
| .BR _XOPEN_CRYPT , |
| .BR _XOPEN_LEGACY , |
| .BR _XOPEN_REALTIME , |
| .BR _XOPEN_REALTIME_THREADS , |
| .BR _XOPEN_UNIX . |
| .\" To be described. |
| .SH SEE ALSO |
| .BR sysconf (3), |
| .BR standards (7) |