| .\" 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 2018-04-30 "" "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). |
| .PP |
| 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: |
| .PP |
| .nf |
| .in +4n |
| .IR posix_fadvise () |
| .IR posix_fallocate () |
| .IR posix_memalign () |
| .IR posix_madvise () |
| .in |
| .fi |
| .SS AIO - _POSIX_ASYNCHRONOUS_IO - _SC_ASYNCHRONOUS_IO |
| The header |
| .I <aio.h> |
| is present. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR aio_cancel () |
| .IR aio_error () |
| .IR aio_fsync () |
| .IR aio_read () |
| .IR aio_return () |
| .IR aio_suspend () |
| .IR aio_write () |
| .IR lio_listio () |
| .in |
| .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: |
| .PP |
| .nf |
| .in +4n |
| .IR pthread_barrier_destroy () |
| .IR pthread_barrier_init () |
| .IR pthread_barrier_wait () |
| .IR pthread_barrierattr_destroy () |
| .IR pthread_barrierattr_init () |
| .in |
| .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 following functions |
| .PP |
| .nf |
| .in +4n |
| .IR chown () |
| .IR fchown () |
| .in |
| .fi |
| .\" What about lchown() ? |
| .SS CS - _POSIX_CLOCK_SELECTION - _SC_CLOCK_SELECTION |
| This option implies the |
| .B _POSIX_TIMERS |
| option. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR pthread_condattr_getclock () |
| .IR pthread_condattr_setclock () |
| .IR clock_nanosleep () |
| .in |
| .fi |
| .PP |
| 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 |
| .B CLOCK_PROCESS_CPUTIME_ID |
| clock 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: |
| .PP |
| .nf |
| .in +4n |
| .IR setpgid () |
| .IR tcdrain () |
| .IR tcflush () |
| .IR tcgetpgrp () |
| .IR tcsendbreak () |
| .IR tcsetattr () |
| .IR tcsetpgrp () |
| .in |
| .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: |
| .PP |
| .nf |
| .in +4n |
| .IR mmap () |
| .IR msync () |
| .IR munmap () |
| .in |
| .fi |
| .SS ML - _POSIX_MEMLOCK - _SC_MEMLOCK |
| Shared memory can be locked into core. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR mlockall () |
| .IR munlockall () |
| .in |
| .fi |
| .SS MR/MLR - _POSIX_MEMLOCK_RANGE - _SC_MEMLOCK_RANGE |
| More precisely, ranges can be locked into core. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR mlock () |
| .IR munlock () |
| .in |
| .fi |
| .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: |
| .PP |
| .nf |
| .in +4n |
| .IR mq_close () |
| .IR mq_getattr () |
| .IR mq_notify () |
| .IR mq_open () |
| .IR mq_receive () |
| .IR mq_send () |
| .IR mq_setattr () |
| .IR mq_unlink () |
| .in |
| .fi |
| .SS MON - _POSIX_MONOTONIC_CLOCK - _SC_MONOTONIC_CLOCK |
| .B CLOCK_MONOTONIC |
| is supported. |
| This option implies the |
| .B _POSIX_TIMERS |
| option. |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .IR aio_suspend () |
| .IR clock_getres () |
| .IR clock_gettime () |
| .IR clock_settime () |
| .IR timer_create () |
| .in |
| .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 |
| .PP |
| .nf |
| .in +4n |
| .IR aio_read () |
| .IR aio_write () |
| .in |
| .fi |
| .SS PS - _POSIX_PRIORITY_SCHEDULING - _SC_PRIORITY_SCHEDULING |
| The include file |
| .I <sched.h> |
| is present. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .fi |
| .PP |
| If also |
| .B _POSIX_SPAWN |
| is in effect, then the following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR posix_spawnattr_getschedparam () |
| .IR posix_spawnattr_getschedpolicy () |
| .IR posix_spawnattr_setschedparam () |
| .IR posix_spawnattr_setschedpolicy () |
| .in |
| .fi |
| .SS RS - _POSIX_RAW_SOCKETS |
| Raw sockets are supported. |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .IR getsockopt () |
| .IR setsockopt () |
| .in |
| .fi |
| .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. |
| .PP |
| The following functions are present: |
| .PP |
| .in +4n |
| .nf |
| .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 |
| .fi |
| .SS RTS - _POSIX_REALTIME_SIGNALS - _SC_REALTIME_SIGNALS |
| Realtime signals are supported. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR sigqueue () |
| .IR sigtimedwait () |
| .IR sigwaitinfo () |
| .in |
| .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: |
| .PP |
| .nf |
| .in +4n |
| .IR regcomp () |
| .IR regerror () |
| .IR regexec () |
| .IR regfree () |
| .in |
| .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. |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .IR exec () |
| .IR kill () |
| .IR seteuid () |
| .IR setegid () |
| .IR setgid () |
| .IR setuid () |
| .in |
| .fi |
| .\" .SS SD |
| .\" Software development |
| .SS SEM - _POSIX_SEMAPHORES - _SC_SEMAPHORES |
| The include file |
| .I <semaphore.h> |
| is present. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .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 () |
| .in |
| .fi |
| .SS SHM - _POSIX_SHARED_MEMORY_OBJECTS - _SC_SHARED_MEMORY_OBJECTS |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR mmap () |
| .IR munmap () |
| .IR shm_open () |
| .IR shm_unlink () |
| .in |
| .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. |
| .PP |
| If |
| .B _POSIX_SPAWN |
| is in effect, then the include file |
| .I <spawn.h> |
| and the following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .fi |
| .PP |
| If also |
| .B _POSIX_PRIORITY_SCHEDULING |
| is in effect, then |
| the following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR posix_spawnattr_getschedparam () |
| .IR posix_spawnattr_getschedpolicy () |
| .IR posix_spawnattr_setschedparam () |
| .IR posix_spawnattr_setschedpolicy () |
| .in |
| .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: |
| .PP |
| .nf |
| .in +4n |
| .IR pthread_spin_destroy () |
| .IR pthread_spin_init () |
| .IR pthread_spin_lock () |
| .IR pthread_spin_trylock () |
| .IR pthread_spin_unlock () |
| .in -4n |
| .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. |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .IR sched_setparam () |
| .IR sched_setscheduler () |
| .in |
| .fi |
| .SS SIO - _POSIX_SYNCHRONIZED_IO - _SC_SYNCHRONIZED_IO |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .IR open () |
| .IR msync () |
| .IR fsync () |
| .IR fdatasync () |
| .in |
| .fi |
| .SS TSA - _POSIX_THREAD_ATTR_STACKADDR - _SC_THREAD_ATTR_STACKADDR |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .IR pthread_attr_getstack () |
| .IR pthread_attr_getstackaddr () |
| .IR pthread_attr_setstack () |
| .IR pthread_attr_setstackaddr () |
| .in |
| .fi |
| .SS TSS - _POSIX_THREAD_ATTR_STACKSIZE - _SC_THREAD_ATTR_STACKSIZE |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .IR pthread_attr_getstack () |
| .IR pthread_attr_getstacksize () |
| .IR pthread_attr_setstack () |
| .IR pthread_attr_setstacksize () |
| .in |
| .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. |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .IR pthread_getcpuclockid () |
| .IR clock_getres () |
| .IR clock_gettime () |
| .IR clock_settime () |
| .IR timer_create () |
| .in |
| .fi |
| .SS TPI - _POSIX_THREAD_PRIO_INHERIT - _SC_THREAD_PRIO_INHERIT |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .IR pthread_mutexattr_getprotocol () |
| .IR pthread_mutexattr_setprotocol () |
| .in |
| .fi |
| .SS TPP - _POSIX_THREAD_PRIO_PROTECT - _SC_THREAD_PRIO_PROTECT |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .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. |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .fi |
| .SS TSH - _POSIX_THREAD_PROCESS_SHARED - _SC_THREAD_PROCESS_SHARED |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .fi |
| .SS TSF - _POSIX_THREAD_SAFE_FUNCTIONS - _SC_THREAD_SAFE_FUNCTIONS |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .fi |
| .SS TSP - _POSIX_THREAD_SPORADIC_SERVER - _SC_THREAD_SPORADIC_SERVER |
| This option implies the |
| .B _POSIX_THREAD_PRIORITY_SCHEDULING |
| option. |
| The following functions are affected: |
| .PP |
| .nf |
| .in +4n |
| .IR sched_getparam () |
| .IR sched_setparam () |
| .IR sched_setscheduler () |
| .in |
| .fi |
| .SS THR - _POSIX_THREADS - _SC_THREADS |
| Basic support for POSIX threads is available. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .fi |
| .SS TMO - _POSIX_TIMEOUTS - _SC_TIMEOUTS |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .fi |
| .SS TMR - _POSIX_TIMERS - _SC_TIMERS |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .fi |
| .SS TRC - _POSIX_TRACE - _SC_TRACE |
| POSIX tracing is available. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .fi |
| .SS TEF - _POSIX_TRACE_EVENT_FILTER - _SC_TRACE_EVENT_FILTER |
| This option implies the |
| .B _POSIX_TRACE |
| option. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .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: |
| .PP |
| .nf |
| .in +4n |
| .IR posix_trace_attr_getinherited () |
| .IR posix_trace_attr_setinherited () |
| .in |
| .fi |
| .SS TRL - _POSIX_TRACE_LOG - _SC_TRACE_LOG |
| This option implies the |
| .B _POSIX_TRACE |
| option. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .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 |
| .fi |
| .SS TYM - _POSIX_TYPED_MEMORY_OBJECTS - _SC_TYPED_MEMORY_OBJECT |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR posix_mem_offset () |
| .IR posix_typed_mem_get_info () |
| .IR posix_typed_mem_open () |
| .in |
| .fi |
| .SS --- - _POSIX_VDISABLE |
| Always present (probably 0). |
| Value to set a changeable special control |
| character to indicate that it is disabled. |
| .SH X/OPEN SYSTEM INTERFACE EXTENSIONS |
| .SS XSI - _XOPEN_CRYPT - _SC_XOPEN_CRYPT |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR crypt () |
| .IR encrypt () |
| .IR setkey () |
| .SS XSI - _XOPEN_REALTIME - _SC_XOPEN_REALTIME |
| This option implies the following options: |
| .PP |
| .PD 0 |
| .TP |
| .BR _POSIX_ASYNCHRONOUS_IO == 200112L |
| .TP |
| .B _POSIX_FSYNC |
| .TP |
| .B _POSIX_MAPPED_FILES |
| .TP |
| .BR _POSIX_MEMLOCK == 200112L |
| .TP |
| .BR _POSIX_MEMLOCK_RANGE == 200112L |
| .TP |
| .B _POSIX_MEMORY_PROTECTION |
| .TP |
| .BR _POSIX_MESSAGE_PASSING == 200112L |
| .TP |
| .B _POSIX_PRIORITIZED_IO |
| .TP |
| .BR _POSIX_PRIORITY_SCHEDULING == 200112L |
| .TP |
| .BR _POSIX_REALTIME_SIGNALS == 200112L |
| .TP |
| .BR _POSIX_SEMAPHORES == 200112L |
| .TP |
| .BR _POSIX_SHARED_MEMORY_OBJECTS == 200112L |
| .TP |
| .BR _POSIX_SYNCHRONIZED_IO == 200112L |
| .TP |
| .BR _POSIX_TIMERS == 200112L |
| .PD |
| .\" |
| .SS ADV - --- - --- |
| The Advanced Realtime option group implies that the following options |
| are all defined to 200112L: |
| .PP |
| .PD 0 |
| .TP |
| .B _POSIX_ADVISORY_INFO |
| .TP |
| .B _POSIX_CLOCK_SELECTION |
| (implies |
| .BR _POSIX_TIMERS ) |
| .TP |
| .B _POSIX_CPUTIME |
| (implies |
| .BR _POSIX_TIMERS ) |
| .TP |
| .B _POSIX_MONOTONIC_CLOCK |
| (implies |
| .BR _POSIX_TIMERS ) |
| .TP |
| .B _POSIX_SPAWN |
| .TP |
| .B _POSIX_SPORADIC_SERVER |
| (implies |
| .BR _POSIX_PRIORITY_SCHEDULING ) |
| .TP |
| .B _POSIX_TIMEOUTS |
| .TP |
| .B _POSIX_TYPED_MEMORY_OBJECTS |
| .PD |
| .\" |
| .SS XSI - _XOPEN_REALTIME_THREADS - _SC_XOPEN_REALTIME_THREADS |
| This option implies that the following options |
| are all defined to 200112L: |
| .PP |
| .PD 0 |
| .TP |
| .B _POSIX_THREAD_PRIO_INHERIT |
| .TP |
| .B _POSIX_THREAD_PRIO_PROTECT |
| .TP |
| .B _POSIX_THREAD_PRIORITY_SCHEDULING |
| .PD |
| .SS ADVANCED REALTIME THREADS - --- - --- |
| This option implies that the following options |
| are all defined to 200112L: |
| .PP |
| .PD 0 |
| .TP |
| .B _POSIX_BARRIERS |
| (implies |
| .BR _POSIX_THREADS , |
| .BR _POSIX_THREAD_SAFE_FUNCTIONS ) |
| .TP |
| .B _POSIX_SPIN_LOCKS |
| (implies |
| .BR _POSIX_THREADS , |
| .BR _POSIX_THREAD_SAFE_FUNCTIONS ) |
| .TP |
| .B _POSIX_THREAD_CPUTIME |
| (implies |
| .BR _POSIX_TIMERS ) |
| .TP |
| .B _POSIX_THREAD_SPORADIC_SERVER |
| (implies |
| .BR _POSIX_THREAD_PRIORITY_SCHEDULING ) |
| .PD |
| .\" |
| .SS TRACING - --- - --- |
| This option implies that the following options |
| are all defined to 200112L: |
| .PP |
| .PD 0 |
| .TP |
| .B _POSIX_TRACE |
| .TP |
| .B _POSIX_TRACE_EVENT_FILTER |
| .TP |
| .B _POSIX_TRACE_LOG |
| .TP |
| .B _POSIX_TRACE_INHERIT |
| .PD |
| .SS STREAMS - _XOPEN_STREAMS - _SC_XOPEN_STREAMS |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR fattach () |
| .IR fdetach () |
| .IR getmsg () |
| .IR getpmsg () |
| .IR ioctl () |
| .IR isastream () |
| .IR putmsg () |
| .IR putpmsg () |
| .in |
| .fi |
| .SS XSI - _XOPEN_LEGACY - _SC_XOPEN_LEGACY |
| Functions included in the legacy option group were previously mandatory, |
| but are now optional in this version. |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR bcmp () |
| .IR bcopy () |
| .IR bzero () |
| .IR ecvt () |
| .IR fcvt () |
| .IR ftime () |
| .IR gcvt () |
| .IR getcwd () |
| .IR index () |
| .IR mktemp () |
| .IR rindex () |
| .IR utimes () |
| .IR wcswcs () |
| .in |
| .fi |
| .SS XSI - _XOPEN_UNIX - _SC_XOPEN_UNIX |
| The following functions are present: |
| .PP |
| .nf |
| .in +4n |
| .IR mmap () |
| .IR munmap () |
| .IR msync () |
| .in |
| .fi |
| .PP |
| This option implies the following options: |
| .PP |
| .PD 0 |
| .TP |
| .B _POSIX_FSYNC |
| .TP |
| .B _POSIX_MAPPED_FILES |
| .TP |
| .B _POSIX_MEMORY_PROTECTION |
| .TP |
| .B _POSIX_THREAD_ATTR_STACKADDR |
| .TP |
| .B _POSIX_THREAD_ATTR_STACKSIZE |
| .TP |
| .B _POSIX_THREAD_PROCESS_SHARED |
| .TP |
| .B _POSIX_THREAD_SAFE_FUNCTIONS |
| .TP |
| .B _POSIX_THREADS |
| .PD |
| .PP |
| This option may imply the following options from the XSI option groups: |
| .PP |
| .PD 0 |
| .TP |
| .RB "Encryption (" _XOPEN_CRYPT ) |
| .TP |
| .RB "Realtime (" _XOPEN_REALTIME ) |
| .TP |
| .RB "Advanced Realtime (" ADB ) |
| .TP |
| .RB "Realtime Threads (" _XOPEN_REALTIME_THREADS ) |
| .TP |
| .RB "Advanced Realtime Threads (" "ADVANCED REALTIME THREADS" ) |
| .TP |
| .RB "Tracing (" TRACING ) |
| .TP |
| .RB "XSI Streams (" STREAMS ) |
| .TP |
| .RB "Legacy (" _XOPEN_LEGACY ) |
| .PD |
| .SH SEE ALSO |
| .BR sysconf (3), |
| .BR standards (7) |