mirror of https://github.com/mkerrisk/man-pages
788 lines
18 KiB
Groff
788 lines
18 KiB
Groff
|
.\" Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl)
|
||
|
.\"
|
||
|
.\" 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, write to the Free
|
||
|
.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
|
||
|
.\" USA.
|
||
|
.\"
|
||
|
.TH POSIXOPTIONS 7 2003-08-24 "POSIX" "Linux Programmer's Manual"
|
||
|
.SH NAME
|
||
|
posixoptions \- optional parts of the POSIX standard
|
||
|
.SH DESCRIPTION
|
||
|
The POSIX standard (the information below is from POSIX 1003.1-2001)
|
||
|
describes a set of behaviours 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
|
||
|
.B sysconf()
|
||
|
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 advisory functions
|
||
|
.br
|
||
|
.nf
|
||
|
.in +4
|
||
|
.IR posix_fadvise() ,
|
||
|
.IR posix_fallocate() ,
|
||
|
.IR posix_memalign() ,
|
||
|
.IR posix_madvise()
|
||
|
.br
|
||
|
.in -4
|
||
|
.fi
|
||
|
are present.
|
||
|
.SS "AIO - _POSIX_ASYNCHRONOUS_IO - _SC_ASYNCHRONOUS_IO"
|
||
|
The header
|
||
|
.I <aio.h>
|
||
|
is present.
|
||
|
The functions
|
||
|
.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
|
||
|
are present.
|
||
|
.SS "BAR - _POSIX_BARRIERS - _SC_BARRIERS"
|
||
|
This option implies the _POSIX_THREADS and
|
||
|
_POSIX_THREAD_SAFE_FUNCTIONS options.
|
||
|
The functions
|
||
|
.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
|
||
|
are present.
|
||
|
.\" .SS "BE"
|
||
|
.\" Batch environment.
|
||
|
.\" .SS "CD"
|
||
|
.\" C development.
|
||
|
.SS "--- - POSIX_CHOWN_RESTRICTED"
|
||
|
If this option is in effect (as it always is under POSIX 1003.1-2001)
|
||
|
then only root may change the owner of a file, and non-root can only
|
||
|
set the group of a file 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 _POSIX_TIMERS option.
|
||
|
The functions
|
||
|
.br
|
||
|
.nf
|
||
|
.in +4
|
||
|
.IR pthread_condattr_getclock() ,
|
||
|
.IR pthread_condattr_setclock() ,
|
||
|
.IR clock_nanosleep()
|
||
|
.in -4
|
||
|
.br
|
||
|
.fi
|
||
|
are present.
|
||
|
If 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 _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
|
||
|
.I 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 1003.1-2001)
|
||
|
then the system implements POSIX \- style job control, and the functions
|
||
|
.br
|
||
|
.nf
|
||
|
.in +4
|
||
|
.IR setpgid() ,
|
||
|
.IR tcdrain() ,
|
||
|
.IR tcflush() ,
|
||
|
.IR tcgetpgrp() ,
|
||
|
.IR tcsendbreak() ,
|
||
|
.IR tcsetattr() ,
|
||
|
.IR tcsetpgrp()
|
||
|
.in -4
|
||
|
are present.
|
||
|
.fi
|
||
|
.SS "MF - _POSIX_MAPPED_FILES - _SC_MAPPED_FILES"
|
||
|
Shared memory is supported. The include file
|
||
|
.I <sys/mman.h>
|
||
|
is present. The functions
|
||
|
.IR mmap() ,
|
||
|
.IR msync() ,
|
||
|
.IR munmap()
|
||
|
are present.
|
||
|
.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
|
||
|
.I mprotect()
|
||
|
is present.
|
||
|
.SS "MSG - _POSIX_MESSAGE_PASSING - _SC_MESSAGE_PASSING"
|
||
|
The include file
|
||
|
.IR <mqueue.h>
|
||
|
is present. The functions
|
||
|
.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
|
||
|
are present.
|
||
|
.SS "MON - _POSIX_MONOTONIC_CLOCK - _SC_MONOTONIC_CLOCK"
|
||
|
.nf
|
||
|
CLOCK_MONOTONIC is supported.
|
||
|
This option implies the _POSIX_TIMERS option.
|
||
|
Affected functions are
|
||
|
.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 1003.1-2001)
|
||
|
then pathname components longer than 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 functions
|
||
|
.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
|
||
|
.br
|
||
|
.fi
|
||
|
are present.
|
||
|
If also _POSIX_SPAWN is in effect, then the functions
|
||
|
.br
|
||
|
.nf
|
||
|
.in +4
|
||
|
.IR posix_spawnattr_getschedparam() ,
|
||
|
.IR posix_spawnattr_getschedpolicy() ,
|
||
|
.IR posix_spawnattr_setschedparam() ,
|
||
|
.IR posix_spawnattr_setschedpolicy()
|
||
|
.in -4
|
||
|
are present.
|
||
|
.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 _POSIX_THREADS option. Conversely,
|
||
|
under POSIX 1003.1-2001 the _POSIX_THREADS option implies this option.
|
||
|
.nf
|
||
|
The functions
|
||
|
.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
|
||
|
are present.
|
||
|
.fi
|
||
|
.SS "RTS - _POSIX_REALTIME_SIGNALS - _SC_REALTIME_SIGNALS"
|
||
|
Realtime signals are supported. The functions
|
||
|
.br
|
||
|
.nf
|
||
|
.in +4
|
||
|
.IR sigqueue() ,
|
||
|
.IR sigtimedwait() ,
|
||
|
.IR sigwaitinfo()
|
||
|
.br
|
||
|
.in -4
|
||
|
.fi
|
||
|
are present.
|
||
|
.SS "--- - _POSIX_REGEXP - _SC_REGEXP"
|
||
|
If this option is in effect (as it always is under POSIX 1003.1-2001)
|
||
|
then POSIX regular expressions are supported and the functions
|
||
|
.br
|
||
|
.nf
|
||
|
.in +4
|
||
|
.IR regcomp() ,
|
||
|
.IR regerror() ,
|
||
|
.IR regexec() ,
|
||
|
.IR regfree()
|
||
|
.br
|
||
|
.in -4
|
||
|
.fi
|
||
|
are present.
|
||
|
.SS "--- - _POSIX_SAVED_IDS - _SC_SAVED_IDS"
|
||
|
If this option is in effect (as it always is under POSIX 1003.1-2001)
|
||
|
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 functions
|
||
|
.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
|
||
|
are present.
|
||
|
.SS "SHM - _POSIX_SHARED_MEMORY_OBJECTS - _SC_SHARED_MEMORY_OBJECTS"
|
||
|
The functions
|
||
|
.br
|
||
|
.nf
|
||
|
.in +4
|
||
|
.IR mmap() ,
|
||
|
.IR munmap() ,
|
||
|
.IR shm_open() ,
|
||
|
.IR shm_unlink()
|
||
|
.br
|
||
|
.in -4
|
||
|
.fi
|
||
|
are present.
|
||
|
.SS "--- - _POSIX_SHELL - _SC_SHELL"
|
||
|
If this option is in effect (as it always is under POSIX 1003.1-2001),
|
||
|
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() ,
|
||
|
e.g. because no MMU is present.
|
||
|
If _POSIX_SPAWN is in effect, then the include file
|
||
|
.I <spawn.h>
|
||
|
and the functions
|
||
|
.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
|
||
|
are present.
|
||
|
If also _POSIX_PRIORITY_SCHEDULING is in effect, then
|
||
|
the functions
|
||
|
.br
|
||
|
.nf
|
||
|
.in +4
|
||
|
.IR posix_spawnattr_getschedparam() ,
|
||
|
.IR posix_spawnattr_getschedpolicy() ,
|
||
|
.IR posix_spawnattr_setschedparam() ,
|
||
|
.IR posix_spawnattr_setschedpolicy()
|
||
|
.in -4
|
||
|
are present.
|
||
|
.fi
|
||
|
.SS "SPI - _POSIX_SPIN_LOCKS - _SC_SPIN_LOCKS"
|
||
|
This option implies the _POSIX_THREADS and
|
||
|
_POSIX_THREAD_SAFE_FUNCTIONS options.
|
||
|
The functions
|
||
|
.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
|
||
|
are present.
|
||
|
.SS "SS - _POSIX_SPORADIC_SERVER - _SC_SPORADIC_SERVER"
|
||
|
The scheduling policy SCHED_SPORADIC is supported.
|
||
|
This option implies the _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 _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 _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 functions
|
||
|
.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
|
||
|
are present.
|
||
|
.SS "TMO - _POSIX_TIMEOUTS - _SC_TIMEOUTS"
|
||
|
The functions
|
||
|
.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
|
||
|
are present.
|
||
|
.SS "TMR - _POSIX_TIMERS - _SC_TIMERS"
|
||
|
The functions
|
||
|
.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
|
||
|
are present.
|
||
|
.SS "TRC - _POSIX_TRACE - _SC_TRACE"
|
||
|
POSIX tracing is available. The functions
|
||
|
.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
|
||
|
are present.
|
||
|
.SS "TEF - _POSIX_TRACE_EVENT_FILTER - _SC_TRACE_EVENT_FILTER"
|
||
|
This option implies the _POSIX_TRACE option.
|
||
|
The functions
|
||
|
.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
|
||
|
are present.
|
||
|
.SS "TRI - _POSIX_TRACE_INHERIT - _SC_TRACE_INHERIT"
|
||
|
Tracing children of the traced process is supported.
|
||
|
This option implies the _POSIX_TRACE option.
|
||
|
The functions
|
||
|
.br
|
||
|
.nf
|
||
|
.in +4
|
||
|
.IR posix_trace_attr_getinherited() ,
|
||
|
.IR posix_trace_attr_setinherited()
|
||
|
.in -4
|
||
|
.br
|
||
|
.fi
|
||
|
are present.
|
||
|
.SS "TRL - _POSIX_TRACE_LOG - _SC_TRACE_LOG"
|
||
|
This option implies the _POSIX_TRACE option.
|
||
|
The functions
|
||
|
.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
|
||
|
are present.
|
||
|
.SS "TYM - _POSIX_TYPED_MEMORY_OBJECTS - _SC_TYPED_MEMORY_OBJECT"
|
||
|
The functions
|
||
|
.br
|
||
|
.nf
|
||
|
.in +4
|
||
|
.IR posix_mem_offset() ,
|
||
|
.IR posix_typed_mem_get_info() ,
|
||
|
.IR posix_typed_mem_open()
|
||
|
.in -4
|
||
|
.br
|
||
|
.fi
|
||
|
are present.
|
||
|
.SS "--- - _POSIX_VDISABLE"
|
||
|
Always present (probably 0). Value to set a changeable special control
|
||
|
character to 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)
|