diff options
Diffstat (limited to 'man7/posixoptions.7')
| -rw-r--r-- | man7/posixoptions.7 | 787 |
1 files changed, 787 insertions, 0 deletions
diff --git a/man7/posixoptions.7 b/man7/posixoptions.7 new file mode 100644 index 000000000..641381e0c --- /dev/null +++ b/man7/posixoptions.7 @@ -0,0 +1,787 @@ +.\" 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) |