2004-11-03 13:51:07 +00:00
|
|
|
.\" Copyright 1993 Giorgio Ciucci <giorgio@crcc.it>
|
|
|
|
.\"
|
intro.1, _exit.2, access.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bind.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, delete_module.2, dup.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, fork.2, fstatat.2, fsync.2, futimesat.2, get_robust_list.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getpagesize.2, getpid.2, getresuid.2, getrlimit.2, getrusage.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, idle.2, init_module.2, intro.2, iopl.2, kcmp.2, kexec_load.2, kill.2, link.2, linkat.2, llseek.2, lookup_dcookie.2, madvise.2, mincore.2, mkdirat.2, mknodat.2, mmap.2, mmap2.2, mount.2, mprotect.2, mq_getsetattr.2, msgctl.2, msgget.2, msgop.2, msync.2, nice.2, open.2, openat.2, pause.2, perfmonctl.2, personality.2, pipe.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, quotactl.2, read.2, readahead.2, readdir.2, readlinkat.2, readv.2, reboot.2, recvmmsg.2, remap_file_pages.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, sendmmsg.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setresuid.2, setuid.2, setup.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, signal.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, splice.2, stat.2, statfs.2, stime.2, subpage_prot.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysfs.2, syslog.2, tee.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, times.2, tkill.2, umask.2, umount.2, uname.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, abort.3, abs.3, acos.3, acosh.3, adjtime.3, aio_init.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, byteorder.3, bzero.3, catgets.3, catopen.3, cbrt.3, ceil.3, clearenv.3, clock.3, clock_getcpuclockid.3, closedir.3, confstr.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, end.3, endian.3, erf.3, erfc.3, ether_aton.3, euidaccess.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fexecve.3, ffs.3, fgetgrent.3, fgetpwent.3, finite.3, flockfile.3, floor.3, fmod.3, fnmatch.3, fopencookie.3, fpathconf.3, fpurge.3, frexp.3, fseeko.3, ftok.3, futimes.3, gcvt.3, get_nprocs_conf.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getipnodebyname.3, getline.3, getlogin.3, getmntent.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwnam.3, getrpcent_r.3, gets.3, getservent.3, getservent_r.3, getumask.3, getusershell.3, getutmp.3, getw.3, glob.3, gnu_get_libc_version.3, gsignal.3, hypot.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, j0.3, ldexp.3, localeconv.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, on_exit.3, opendir.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, profil.3, psignal.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, putenv.3, putpwent.3, puts.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, re_comp.3, readdir.3, realpath.3, regex.3, remainder.3, remove.3, resolver.3, rewinddir.3, rint.3, round.3, scalb.3, scalbln.3, scandir.3, sched_getcpu.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setenv.3, setlocale.3, setlogmask.3, shm_open.3, siginterrupt.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdio_ext.3, stpcpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfry.3, strftime.3, string.3, strlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, trunc.3, tsearch.3, ttyslot.3, tzset.3, ulimit.3, undocumented.3, unlocked_stdio.3, usleep.3, y0.3, cpuid.4, full.4, initrd.4, mouse.4, msr.4, sd.4, st.4, acct.5, core.5, services.5, slabinfo.5, aio.7, capabilities.7, credentials.7, feature_test_macros.7, hier.7, inotify.7, libc.7, locale.7, man-pages.7, man.7, math_error.7, mq_overview.7, numa.7, path_resolution.7, pipe.7, pthreads.7, pty.7, rtld-audit.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, suffixes.7, svipc.7, termio.7, time.7, udplite.7, units.7, uri.7, sln.8: s/LICENSE_START(verbatim)/LICENSE_START(VERBATIM)/
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-10 09:29:01 +00:00
|
|
|
.\" %%%LICENSE_START(VERBATIM)
|
2004-11-03 13:51:07 +00:00
|
|
|
.\" Permission is granted to make and distribute verbatim copies of this
|
|
|
|
.\" manual provided the copyright notice and this permission notice are
|
|
|
|
.\" preserved on all copies.
|
|
|
|
.\"
|
|
|
|
.\" Permission is granted to copy and distribute modified versions of this
|
|
|
|
.\" manual under the conditions for verbatim copying, provided that the
|
|
|
|
.\" entire resulting derived work is distributed under the terms of a
|
|
|
|
.\" permission notice identical to this one.
|
2007-04-12 22:42:49 +00:00
|
|
|
.\"
|
2004-11-03 13:51:07 +00:00
|
|
|
.\" Since the Linux kernel and libraries are constantly changing, this
|
|
|
|
.\" manual page may be incorrect or out-of-date. The author(s) assume no
|
|
|
|
.\" responsibility for errors or omissions, or for damages resulting from
|
|
|
|
.\" the use of the information contained herein. The author(s) may not
|
|
|
|
.\" have taken the same level of care in the production of this manual,
|
|
|
|
.\" which is licensed free of charge, as they might when working
|
|
|
|
.\" professionally.
|
2007-04-12 22:42:49 +00:00
|
|
|
.\"
|
2004-11-03 13:51:07 +00:00
|
|
|
.\" Formatted or processed versions of this manual, if unaccompanied by
|
|
|
|
.\" the source, must acknowledge the copyright and authors of this work.
|
intro.1, _exit.2, access.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bind.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, delete_module.2, dup.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, fork.2, fstatat.2, fsync.2, futimesat.2, get_robust_list.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getpagesize.2, getpid.2, getresuid.2, getrlimit.2, getrusage.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, idle.2, init_module.2, intro.2, iopl.2, kcmp.2, kexec_load.2, kill.2, link.2, linkat.2, llseek.2, lookup_dcookie.2, madvise.2, mincore.2, mkdirat.2, mknodat.2, mmap.2, mmap2.2, mount.2, mprotect.2, mq_getsetattr.2, msgctl.2, msgget.2, msgop.2, msync.2, nice.2, open.2, openat.2, pause.2, perfmonctl.2, personality.2, pipe.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, quotactl.2, read.2, readahead.2, readdir.2, readlinkat.2, readv.2, reboot.2, recvmmsg.2, remap_file_pages.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, sendmmsg.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setresuid.2, setuid.2, setup.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, signal.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, splice.2, stat.2, statfs.2, stime.2, subpage_prot.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysfs.2, syslog.2, tee.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, times.2, tkill.2, umask.2, umount.2, uname.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, abort.3, abs.3, acos.3, acosh.3, adjtime.3, aio_init.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, byteorder.3, bzero.3, catgets.3, catopen.3, cbrt.3, ceil.3, clearenv.3, clock.3, clock_getcpuclockid.3, closedir.3, confstr.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, end.3, endian.3, erf.3, erfc.3, ether_aton.3, euidaccess.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fexecve.3, ffs.3, fgetgrent.3, fgetpwent.3, finite.3, flockfile.3, floor.3, fmod.3, fnmatch.3, fopencookie.3, fpathconf.3, fpurge.3, frexp.3, fseeko.3, ftok.3, futimes.3, gcvt.3, get_nprocs_conf.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getipnodebyname.3, getline.3, getlogin.3, getmntent.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwnam.3, getrpcent_r.3, gets.3, getservent.3, getservent_r.3, getumask.3, getusershell.3, getutmp.3, getw.3, glob.3, gnu_get_libc_version.3, gsignal.3, hypot.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, j0.3, ldexp.3, localeconv.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, on_exit.3, opendir.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, profil.3, psignal.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, putenv.3, putpwent.3, puts.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, re_comp.3, readdir.3, realpath.3, regex.3, remainder.3, remove.3, resolver.3, rewinddir.3, rint.3, round.3, scalb.3, scalbln.3, scandir.3, sched_getcpu.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setenv.3, setlocale.3, setlogmask.3, shm_open.3, siginterrupt.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdio_ext.3, stpcpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfry.3, strftime.3, string.3, strlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, trunc.3, tsearch.3, ttyslot.3, tzset.3, ulimit.3, undocumented.3, unlocked_stdio.3, usleep.3, y0.3, cpuid.4, full.4, initrd.4, mouse.4, msr.4, sd.4, st.4, acct.5, core.5, services.5, slabinfo.5, aio.7, capabilities.7, credentials.7, feature_test_macros.7, hier.7, inotify.7, libc.7, locale.7, man-pages.7, man.7, math_error.7, mq_overview.7, numa.7, path_resolution.7, pipe.7, pthreads.7, pty.7, rtld-audit.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, suffixes.7, svipc.7, termio.7, time.7, udplite.7, units.7, uri.7, sln.8: Global fix: Add LICENSE_START(verbatim)
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-10 09:28:40 +00:00
|
|
|
.\" %%%LICENSE_END
|
2004-11-03 13:51:07 +00:00
|
|
|
.\"
|
|
|
|
.\" Modified Tue Oct 22 16:40:11 1996 by Eric S. Raymond <esr@thyrsus.com>
|
|
|
|
.\" Modified Mon Jul 10 21:09:59 2000 by aeb
|
2007-09-20 06:52:22 +00:00
|
|
|
.\" Modified 1 Jun 2002, Michael Kerrisk <mtk.manpages@gmail.com>
|
2004-11-03 13:51:07 +00:00
|
|
|
.\" Language clean-ups.
|
|
|
|
.\" Enhanced and corrected information on msg_qbytes, MSGMNB and MSGMAX
|
2007-06-08 09:56:56 +00:00
|
|
|
.\" Added note on restart behavior of msgsnd() and msgrcv()
|
2007-04-12 22:42:49 +00:00
|
|
|
.\" Formatting clean-ups (argument and field names marked as .I
|
2004-11-03 13:51:07 +00:00
|
|
|
.\" instead of .B)
|
2007-09-20 06:52:22 +00:00
|
|
|
.\" Modified, 27 May 2004, Michael Kerrisk <mtk.manpages@gmail.com>
|
2004-11-03 13:51:07 +00:00
|
|
|
.\" Added notes on capability requirements
|
2007-09-20 06:52:22 +00:00
|
|
|
.\" Modified, 11 Nov 2004, Michael Kerrisk <mtk.manpages@gmail.com>
|
2004-11-10 17:24:20 +00:00
|
|
|
.\" Language and formatting clean-ups
|
|
|
|
.\" Added notes on /proc files
|
adjtimex.2, bind.2, cacheflush.2, clone.2, fallocate.2, fanotify_init.2, fanotify_mark.2, flock.2, futex.2, getdents.2, getpriority.2, getrlimit.2, gettid.2, gettimeofday.2, ioprio_set.2, kexec_load.2, migrate_pages.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, msgop.2, nfsservctl.2, perf_event_open.2, pread.2, ptrace.2, recvmmsg.2, rename.2, restart_syscall.2, sched_setattr.2, send.2, shmop.2, shutdown.2, sigaction.2, signalfd.2, syscalls.2, timer_create.2, timerfd_create.2, tkill.2, vmsplice.2, wait.2, aio_init.3, confstr.3, exit.3, fmemopen.3, fopen.3, getaddrinfo.3, getauxval.3, getspnam.3, isalpha.3, isatty.3, mallinfo.3, malloc.3, mallopt.3, psignal.3, pthread_attr_setinheritsched.3, qecvt.3, queue.3, rtnetlink.3, strerror.3, strftime.3, toupper.3, towlower.3, towupper.3, initrd.4, locale.5, proc.5, bootparam.7, capabilities.7, ddp.7, fanotify.7, icmp.7, inotify.7, ip.7, ipv6.7, netdevice.7, netlink.7, path_resolution.7, rtld-audit.7, rtnetlink.7, sched.7, signal.7, socket.7, svipc.7, tcp.7, unix.7, ld.so.8: srcfix: Update FIXMEs
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2014-08-21 21:47:44 +00:00
|
|
|
.\"
|
memusage.1, memusagestat.1, pldd.1, accept.2, adjtimex.2, arch_prctl.2, bdflush.2, bpf.2, close.2, epoll_ctl.2, epoll_wait.2, execve.2, execveat.2, fanotify_init.2, fanotify_mark.2, fcntl.2, fsync.2, get_kernel_syms.2, getdomainname.2, getgroups.2, gethostname.2, getrandom.2, getrlimit.2, getrusage.2, getsid.2, getunwind.2, io_getevents.2, ioctl_fat.2, kexec_load.2, killpg.2, listxattr.2, lseek.2, madvise.2, memfd_create.2, mknod.2, mlock.2, modify_ldt.2, msgctl.2, msgget.2, msgop.2, readlink.2, readv.2, reboot.2, recvmmsg.2, rename.2, request_key.2, restart_syscall.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, seccomp.2, select_tut.2, semctl.2, semget.2, semop.2, set_thread_area.2, seteuid.2, setgid.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigprocmask.2, stat.2, symlink.2, syscall.2, sysctl.2, unlink.2, bindresvport.3, byteorder.3, dlopen.3, endian.3, error.3, ffs.3, fmemopen.3, getcwd.3, getlogin.3, getnetent.3, getprotoent.3, getservent.3, getumask.3, getutent.3, glob.3, isalpha.3, lio_listio.3, login.3, mbsinit.3, mbstowcs.3, mbtowc.3, mkstemp.3, nextup.3, ntp_gettime.3, posix_fallocate.3, posix_spawn.3, pthread_join.3, pthread_rwlockattr_setkind_np.3, random.3, rcmd.3, realpath.3, resolver.3, setjmp.3, setnetgrent.3, sigvec.3, strerror.3, strverscmp.3, system.3, toupper.3, towlower.3, towupper.3, wcstombs.3, wordexp.3, cciss.4, loop.4, mouse.4, random.4, core.5, group.5, hosts.5, resolv.conf.5, ascii.7, environ.7, epoll.7, glob.7, ip.7, mq_overview.7, packet.7, pipe.7, raw.7, sched.7, signal.7, socket.7, symlink.7, ld.so.8, sln.8: tstamp
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 10:53:47 +00:00
|
|
|
.TH MSGOP 2 2016-10-08 "Linux" "Linux Programmer's Manual"
|
2004-11-03 13:51:07 +00:00
|
|
|
.SH NAME
|
2013-03-18 11:59:24 +00:00
|
|
|
msgrcv, msgsnd \- System V message queue operations
|
2004-11-03 13:51:07 +00:00
|
|
|
.SH SYNOPSIS
|
|
|
|
.nf
|
2007-04-03 14:04:54 +00:00
|
|
|
.B #include <sys/types.h>
|
|
|
|
.B #include <sys/ipc.h>
|
|
|
|
.B #include <sys/msg.h>
|
2004-11-03 13:51:07 +00:00
|
|
|
.sp
|
2007-04-03 14:04:54 +00:00
|
|
|
.BI "int msgsnd(int " msqid ", const void *" msgp ", size_t " msgsz \
|
|
|
|
", int " msgflg );
|
2004-11-03 13:51:07 +00:00
|
|
|
.sp
|
2007-04-03 14:04:54 +00:00
|
|
|
.BI "ssize_t msgrcv(int " msqid ", void *" msgp ", size_t " msgsz \
|
|
|
|
", long " msgtyp ,
|
|
|
|
.BI " int " msgflg );
|
|
|
|
.fi
|
2004-11-03 13:51:07 +00:00
|
|
|
.SH DESCRIPTION
|
2004-11-10 17:24:20 +00:00
|
|
|
The
|
|
|
|
.BR msgsnd ()
|
|
|
|
and
|
|
|
|
.BR msgrcv ()
|
|
|
|
system calls are used, respectively, to send messages to,
|
clone.2, execve.2, getpriority.2, ipc.2, kcmp.2, killpg.2, msgctl.2, msgget.2, msgop.2, select.2, semctl.2, semget.2, semop.2, setpgid.2, shmctl.2, shmget.2, shmop.2, sigaction.2, signal.2, socket.2, socketpair.2, syscalls.2, umask.2, unshare.2: ffix: Don't allow line break inside "System V"
2014-04-28 07:36:03 +00:00
|
|
|
and receive messages from, a System\ V message queue.
|
2004-11-10 17:24:20 +00:00
|
|
|
The calling process must have write permission on the message queue
|
|
|
|
in order to send a message, and read permission to receive a message.
|
|
|
|
.PP
|
|
|
|
The
|
|
|
|
.I msgp
|
2014-01-23 08:31:52 +00:00
|
|
|
argument is a pointer to a caller-defined structure
|
2004-11-03 13:51:07 +00:00
|
|
|
of the following general form:
|
2007-12-19 05:53:30 +00:00
|
|
|
.in +4n
|
2007-04-05 13:29:41 +00:00
|
|
|
.nf
|
|
|
|
|
|
|
|
struct msgbuf {
|
|
|
|
long mtype; /* message type, must be > 0 */
|
|
|
|
char mtext[1]; /* message data */
|
|
|
|
};
|
|
|
|
.fi
|
2007-12-19 05:53:30 +00:00
|
|
|
.in
|
2007-04-05 13:29:41 +00:00
|
|
|
.PP
|
2004-11-03 13:51:07 +00:00
|
|
|
The
|
|
|
|
.I mtext
|
|
|
|
field is an array (or other structure) whose size is specified by
|
|
|
|
.IR msgsz ,
|
_syscall.2, accept.2, epoll_create.2, inotify_add_watch.2, ioctl.2, msgget.2, msgop.2, open.2, prctl.2, sched_setscheduler.2, semctl.2, semget.2, swapon.2, addseverity.3, cacosh.3, csqrt.3, dirfd.3, drand48.3, fputws.3, mq_send.3, posix_openpt.3, puts.3, sched_getcpu.3, shm_open.3, sqrt.3, sysconf.3, tgamma.3, ulimit.3, credentials.7, svipc.7: Global fix: s/non-negative/nonnegative/
The tendency in English, as prescribed in style guides like
Chicago MoS, is towards removing hyphens after prefixes
like "non-" etc.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2010-01-16 16:44:48 +00:00
|
|
|
a nonnegative integer value.
|
2004-11-03 13:51:07 +00:00
|
|
|
Messages of zero length (i.e., no
|
|
|
|
.I mtext
|
|
|
|
field) are permitted.
|
|
|
|
The
|
|
|
|
.I mtype
|
2004-11-10 17:24:20 +00:00
|
|
|
field must have a strictly positive integer value.
|
|
|
|
This value can be
|
2004-11-03 13:51:07 +00:00
|
|
|
used by the receiving process for message selection
|
2004-11-10 17:24:20 +00:00
|
|
|
(see the description of
|
|
|
|
.BR msgrcv ()
|
|
|
|
below).
|
2008-04-23 20:59:00 +00:00
|
|
|
.SS msgsnd()
|
2004-11-03 13:51:07 +00:00
|
|
|
The
|
2004-11-10 17:24:20 +00:00
|
|
|
.BR msgsnd ()
|
2004-11-03 13:51:07 +00:00
|
|
|
system call appends a copy of the message pointed to by
|
|
|
|
.I msgp
|
|
|
|
to the message queue whose identifier is specified
|
|
|
|
by
|
|
|
|
.IR msqid .
|
|
|
|
.PP
|
2004-11-10 17:24:20 +00:00
|
|
|
If sufficient space is available in the queue,
|
|
|
|
.BR msgsnd ()
|
2004-11-03 13:51:07 +00:00
|
|
|
succeeds immediately.
|
2014-05-16 12:26:25 +00:00
|
|
|
The queue capacity is governed by the
|
2014-05-21 11:16:14 +00:00
|
|
|
.I msg_qbytes
|
2004-11-03 13:51:07 +00:00
|
|
|
field in the associated data structure for the message queue.
|
2007-06-08 09:56:56 +00:00
|
|
|
During queue creation this field is initialized to
|
2004-11-03 13:51:07 +00:00
|
|
|
.B MSGMNB
|
|
|
|
bytes, but this limit can be modified using
|
2014-05-16 12:26:25 +00:00
|
|
|
.BR msgctl (2).
|
2014-05-16 12:42:46 +00:00
|
|
|
A message queue is considered to be full if either of the following
|
|
|
|
conditions is true:
|
2014-05-16 12:26:25 +00:00
|
|
|
.IP * 2
|
2014-05-16 12:42:46 +00:00
|
|
|
Adding a new message to the queue would cause the total number of bytes
|
|
|
|
in the queue to exceed the queue's maximum size (the
|
2014-05-16 12:26:25 +00:00
|
|
|
.I msg_qbytes
|
|
|
|
field).
|
|
|
|
.IP *
|
2014-05-16 12:42:46 +00:00
|
|
|
Adding another message to the queue would cause the total number of messages
|
|
|
|
in the queue to exceed the queue's maximum size (the
|
2014-05-16 12:26:25 +00:00
|
|
|
.I msg_qbytes
|
2014-05-16 12:42:46 +00:00
|
|
|
field).
|
|
|
|
This check is necessary to prevent an unlimited number of zero-length
|
|
|
|
messages being placed on the queue.
|
|
|
|
Although such messages contain no data,
|
|
|
|
they nevertheless consume (locked) kernel memory.
|
2014-05-16 12:26:25 +00:00
|
|
|
.PP
|
2004-11-10 17:24:20 +00:00
|
|
|
If insufficient space is available in the queue, then the default
|
2007-06-08 09:56:56 +00:00
|
|
|
behavior of
|
2004-11-10 17:24:20 +00:00
|
|
|
.BR msgsnd ()
|
2004-11-03 13:51:07 +00:00
|
|
|
is to block until space becomes available.
|
|
|
|
If
|
|
|
|
.B IPC_NOWAIT
|
2004-11-10 17:24:20 +00:00
|
|
|
is specified in
|
|
|
|
.IR msgflg ,
|
2004-11-03 13:51:07 +00:00
|
|
|
then the call instead fails with the error
|
|
|
|
.BR EAGAIN .
|
|
|
|
|
2007-04-12 22:42:49 +00:00
|
|
|
A blocked
|
2004-11-10 17:24:20 +00:00
|
|
|
.BR msgsnd ()
|
2008-04-23 20:59:00 +00:00
|
|
|
call may also fail if:
|
|
|
|
.IP * 2
|
2008-04-25 06:57:43 +00:00
|
|
|
the queue is removed,
|
2008-04-23 20:59:00 +00:00
|
|
|
in which case the system call fails with
|
2004-11-03 13:51:07 +00:00
|
|
|
.I errno
|
|
|
|
set to
|
2008-04-23 20:59:00 +00:00
|
|
|
.BR EIDRM ;
|
|
|
|
or
|
|
|
|
.IP *
|
|
|
|
a signal is caught, in which case the system call fails
|
2004-11-03 13:51:07 +00:00
|
|
|
with
|
|
|
|
.I errno
|
|
|
|
set to
|
2008-07-07 04:40:49 +00:00
|
|
|
.BR EINTR ; see
|
|
|
|
.BR signal (7).
|
2008-04-23 20:59:00 +00:00
|
|
|
.RB ( msgsnd ()
|
|
|
|
is never automatically restarted after being interrupted by a
|
2008-07-01 14:15:13 +00:00
|
|
|
signal handler, regardless of the setting of the
|
2004-11-03 13:51:07 +00:00
|
|
|
.B SA_RESTART
|
|
|
|
flag when establishing a signal handler.)
|
|
|
|
.PP
|
|
|
|
Upon successful completion the message queue data structure is updated
|
|
|
|
as follows:
|
|
|
|
.IP
|
|
|
|
.I msg_lspid
|
|
|
|
is set to the process ID of the calling process.
|
|
|
|
.IP
|
|
|
|
.I msg_qnum
|
|
|
|
is incremented by 1.
|
|
|
|
.IP
|
|
|
|
.I msg_stime
|
|
|
|
is set to the current time.
|
2008-04-23 20:59:00 +00:00
|
|
|
.SS msgrcv()
|
|
|
|
The
|
2004-11-10 17:24:20 +00:00
|
|
|
.BR msgrcv ()
|
2008-04-23 20:59:00 +00:00
|
|
|
system call removes a message from the queue specified by
|
2004-11-03 13:51:07 +00:00
|
|
|
.I msqid
|
2006-02-02 10:47:23 +00:00
|
|
|
and places it in the buffer
|
2008-04-18 15:52:17 +00:00
|
|
|
pointed to by
|
2006-02-02 10:47:23 +00:00
|
|
|
.IR msgp .
|
2004-11-03 13:51:07 +00:00
|
|
|
.PP
|
|
|
|
The argument
|
|
|
|
.I msgsz
|
|
|
|
specifies the maximum size in bytes for the member
|
|
|
|
.I mtext
|
|
|
|
of the structure pointed to by the
|
|
|
|
.I msgp
|
|
|
|
argument.
|
|
|
|
If the message text has length greater than
|
|
|
|
.IR msgsz ,
|
2007-06-08 09:56:56 +00:00
|
|
|
then the behavior depends on whether
|
2007-09-20 16:26:31 +00:00
|
|
|
.B MSG_NOERROR
|
2007-04-12 22:42:49 +00:00
|
|
|
is specified in
|
2004-11-10 17:24:20 +00:00
|
|
|
.IR msgflg .
|
|
|
|
If
|
2007-09-20 16:26:31 +00:00
|
|
|
.B MSG_NOERROR
|
2004-11-10 17:24:20 +00:00
|
|
|
is specified, then
|
2004-11-03 13:51:07 +00:00
|
|
|
the message text will be truncated (and the truncated part will be
|
2007-04-12 22:42:49 +00:00
|
|
|
lost); if
|
2007-09-20 16:26:31 +00:00
|
|
|
.B MSG_NOERROR
|
2004-11-10 17:24:20 +00:00
|
|
|
is not specified, then
|
|
|
|
the message isn't removed from the queue and
|
|
|
|
the system call fails returning \-1 with
|
2004-11-03 13:51:07 +00:00
|
|
|
.I errno
|
|
|
|
set to
|
|
|
|
.BR E2BIG .
|
|
|
|
.PP
|
2014-01-23 11:52:33 +00:00
|
|
|
Unless
|
|
|
|
.B MSG_COPY
|
|
|
|
is specified in
|
|
|
|
.IR msgflg
|
|
|
|
(see below),
|
|
|
|
the
|
2004-11-03 13:51:07 +00:00
|
|
|
.I msgtyp
|
2014-01-23 11:52:33 +00:00
|
|
|
argument specifies the type of message requested, as follows:
|
2008-04-23 20:59:00 +00:00
|
|
|
.IP * 2
|
2004-11-03 13:51:07 +00:00
|
|
|
If
|
|
|
|
.I msgtyp
|
2004-11-10 17:24:20 +00:00
|
|
|
is 0,
|
2004-11-03 13:51:07 +00:00
|
|
|
then the first message in the queue is read.
|
2008-04-23 20:59:00 +00:00
|
|
|
.IP *
|
2004-11-03 13:51:07 +00:00
|
|
|
If
|
|
|
|
.I msgtyp
|
2004-11-10 17:24:20 +00:00
|
|
|
is greater than 0,
|
|
|
|
then the first message in the queue of type
|
2004-11-03 13:51:07 +00:00
|
|
|
.I msgtyp
|
|
|
|
is read, unless
|
|
|
|
.B MSG_EXCEPT
|
2004-11-10 17:24:20 +00:00
|
|
|
was specified in
|
2004-11-03 13:51:07 +00:00
|
|
|
.IR msgflg ,
|
|
|
|
in which case
|
2004-11-10 17:24:20 +00:00
|
|
|
the first message in the queue of type not equal to
|
2004-11-03 13:51:07 +00:00
|
|
|
.I msgtyp
|
|
|
|
will be read.
|
2008-04-23 20:59:00 +00:00
|
|
|
.IP *
|
2004-11-03 13:51:07 +00:00
|
|
|
If
|
|
|
|
.I msgtyp
|
2004-11-10 17:24:20 +00:00
|
|
|
is less than 0,
|
|
|
|
then the first message in the queue with the lowest type less than or
|
2004-11-03 13:51:07 +00:00
|
|
|
equal to the absolute value of
|
|
|
|
.I msgtyp
|
|
|
|
will be read.
|
|
|
|
.PP
|
|
|
|
The
|
|
|
|
.I msgflg
|
2004-11-10 17:24:20 +00:00
|
|
|
argument is a bit mask constructed by ORing together zero or more
|
|
|
|
of the following flags:
|
|
|
|
.TP
|
2004-11-03 13:51:07 +00:00
|
|
|
.B IPC_NOWAIT
|
2006-02-02 10:47:23 +00:00
|
|
|
Return immediately if no message of the requested type is in the queue.
|
2004-11-10 17:24:20 +00:00
|
|
|
The system call fails with
|
|
|
|
.I errno
|
|
|
|
set to
|
2004-11-03 13:51:07 +00:00
|
|
|
.BR ENOMSG .
|
2004-11-10 17:24:20 +00:00
|
|
|
.TP
|
2014-01-23 11:52:33 +00:00
|
|
|
.BR MSG_COPY " (since Linux 3.8)"
|
|
|
|
.\" commit 4a674f34ba04a002244edaf891b5da7fc1473ae8
|
|
|
|
Nondestructively fetch a copy of the message at the ordinal position
|
|
|
|
in the queue specified by
|
|
|
|
.I msgtyp
|
|
|
|
(messages are considered to be numbered starting at 0).
|
2014-03-17 09:27:03 +00:00
|
|
|
|
|
|
|
This flag must be specified in conjunction with
|
2014-01-23 11:52:33 +00:00
|
|
|
.BR IPC_NOWAIT ,
|
2014-03-17 09:27:03 +00:00
|
|
|
with the result that, if there is no message available at the given position,
|
2014-01-23 11:52:33 +00:00
|
|
|
the call fails immediately with the error
|
|
|
|
.BR ENOMSG .
|
2014-03-17 09:27:03 +00:00
|
|
|
Because they alter the meaning of
|
|
|
|
.I msgtyp
|
|
|
|
in orthogonal ways,
|
|
|
|
.BR MSG_COPY
|
|
|
|
and
|
|
|
|
.BR MSG_EXCEPT
|
|
|
|
may not both be specified in
|
|
|
|
.IR msgflg .
|
|
|
|
|
|
|
|
The
|
|
|
|
.BR MSG_COPY
|
|
|
|
flag was added for the implementation of
|
2014-01-23 11:52:33 +00:00
|
|
|
the kernel checkpoint-restore facility and
|
|
|
|
is available only if the kernel was built with the
|
|
|
|
.B CONFIG_CHECKPOINT_RESTORE
|
|
|
|
option.
|
|
|
|
.TP
|
2004-11-03 13:51:07 +00:00
|
|
|
.B MSG_EXCEPT
|
|
|
|
Used with
|
|
|
|
.I msgtyp
|
2004-11-10 17:24:20 +00:00
|
|
|
greater than 0
|
|
|
|
to read the first message in the queue with message type that differs
|
2004-11-03 13:51:07 +00:00
|
|
|
from
|
|
|
|
.IR msgtyp .
|
2004-11-10 17:24:20 +00:00
|
|
|
.TP
|
2004-11-03 13:51:07 +00:00
|
|
|
.B MSG_NOERROR
|
|
|
|
To truncate the message text if longer than
|
|
|
|
.I msgsz
|
|
|
|
bytes.
|
|
|
|
.PP
|
|
|
|
If no message of the requested type is available and
|
|
|
|
.B IPC_NOWAIT
|
2004-11-10 17:24:20 +00:00
|
|
|
isn't specified in
|
2004-11-03 13:51:07 +00:00
|
|
|
.IR msgflg ,
|
|
|
|
the calling process is blocked until one of the following conditions occurs:
|
2008-04-23 20:59:00 +00:00
|
|
|
.IP * 2
|
2004-11-10 17:24:20 +00:00
|
|
|
A message of the desired type is placed in the queue.
|
2008-04-23 20:59:00 +00:00
|
|
|
.IP *
|
2004-11-03 13:51:07 +00:00
|
|
|
The message queue is removed from the system.
|
2014-03-26 05:23:46 +00:00
|
|
|
In this case, the system call fails with
|
2004-11-03 13:51:07 +00:00
|
|
|
.I errno
|
|
|
|
set to
|
|
|
|
.BR EIDRM .
|
2008-04-23 20:59:00 +00:00
|
|
|
.IP *
|
2004-11-03 13:51:07 +00:00
|
|
|
The calling process catches a signal.
|
2014-03-26 05:23:46 +00:00
|
|
|
In this case, the system call fails with
|
2004-11-03 13:51:07 +00:00
|
|
|
.I errno
|
|
|
|
set to
|
|
|
|
.BR EINTR .
|
2008-04-23 20:59:00 +00:00
|
|
|
.RB ( msgrcv ()
|
|
|
|
is never automatically restarted after being interrupted by a
|
2008-07-01 14:15:13 +00:00
|
|
|
signal handler, regardless of the setting of the
|
2008-04-23 20:59:00 +00:00
|
|
|
.B SA_RESTART
|
|
|
|
flag when establishing a signal handler.)
|
2004-11-03 13:51:07 +00:00
|
|
|
.PP
|
|
|
|
Upon successful completion the message queue data structure is updated
|
|
|
|
as follows:
|
|
|
|
.IP
|
|
|
|
.I msg_lrpid
|
|
|
|
is set to the process ID of the calling process.
|
|
|
|
.IP
|
|
|
|
.I msg_qnum
|
|
|
|
is decremented by 1.
|
|
|
|
.IP
|
|
|
|
.I msg_rtime
|
|
|
|
is set to the current time.
|
getent.1, intro.1, time.1, _exit.2, _syscall.2, accept.2, access.2, acct.2, adjtimex.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bdflush.2, bind.2, brk.2, cacheflush.2, capget.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, flock.2, fork.2, fstatat.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpid.2, getpriority.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, getxattr.2, idle.2, init_module.2, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, intro.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl.2, ioctl_list.2, ioperm.2, iopl.2, ioprio_set.2, ipc.2, kcmp.2, kill.2, killpg.2, link.2, linkat.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, migrate_pages.2, mincore.2, mkdir.2, mkdirat.2, mknod.2, mknodat.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgctl.2, msgget.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, open.2, openat.2, outb.2, pause.2, pciconfig_read.2, perf_event_open.2, perfmonctl.2, personality.2, pipe.2, pivot_root.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, read.2, readahead.2, readdir.2, readlink.2, readlinkat.2, readv.2, reboot.2, recv.2, remap_file_pages.2, removexattr.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, select.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, setup.2, setxattr.2, shmctl.2, shmget.2, shmop.2, shutdown.2, sigaction.2, sigaltstack.2, signal.2, signalfd.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, stat.2, statfs.2, stime.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, sysctl.2, sysfs.2, sysinfo.2, syslog.2, tee.2, time.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, uname.2, unimplemented.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, MB_CUR_MAX.3, MB_LEN_MAX.3, __setfpucw.3, a64l.3, abort.3, abs.3, acos.3, acosh.3, addseverity.3, adjtime.3, aio_cancel.3, aio_error.3, aio_fsync.3, aio_read.3, aio_return.3, aio_suspend.3, aio_write.3, alloca.3, argz_add.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, backtrace.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, btowc.3, btree.3, byteorder.3, bzero.3, cabs.3, cacos.3, cacosh.3, canonicalize_file_name.3, carg.3, casin.3, casinh.3, catan.3, catanh.3, catgets.3, catopen.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cerf.3, cexp.3, cexp2.3, cfree.3, cimag.3, clearenv.3, clock.3, clock_getcpuclockid.3, clog.3, clog10.3, clog2.3, closedir.3, cmsg.3, confstr.3, conj.3, copysign.3, cos.3, cosh.3, cpow.3, cproj.3, creal.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctermid.3, ctime.3, daemon.3, dbopen.3, des_crypt.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dlopen.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, encrypt.3, end.3, endian.3, envz_add.3, erf.3, erfc.3, err.3, errno.3, error.3, ether_aton.3, euidaccess.3, exec.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fclose.3, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetgrent.3, fgetpwent.3, fgetwc.3, fgetws.3, finite.3, flockfile.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fnmatch.3, fopen.3, fpathconf.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, fread.3, frexp.3, fseek.3, fseeko.3, ftime.3, ftok.3, fts.3, ftw.3, futimes.3, fwide.3, gamma.3, gcvt.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getipnodebyname.3, getline.3, getloadavg.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getpass.3, getprotoent.3, getprotoent_r.3, getpt.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getrpcent_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, getumask.3, getusershell.3, getutent.3, getw.3, getwchar.3, glob.3, grantpt.3, gsignal.3, hash.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, isgreater.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, j0.3, key_setsecret.3, ldexp.3, lgamma.3, lio_listio.3, localeconv.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, longjmp.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, malloc.3, malloc_hook.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, mempcpy.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mpool.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, nan.3, netlink.3, nextafter.3, nl_langinfo.3, offsetof.3, on_exit.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, printf.3, profil.3, program_invocation_name.3, psignal.3, pthread_kill_other_threads_np.3, ptsname.3, putenv.3, putgrent.3, putpwent.3, puts.3, putwchar.3, qecvt.3, qsort.3, queue.3, raise.3, rand.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, recno.3, regex.3, remainder.3, remove.3, remquo.3, resolver.3, rewinddir.3, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, rtime.3, rtnetlink.3, scalb.3, scalbln.3, scandir.3, scandirat.3, scanf.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setaliasent.3, setbuf.3, setenv.3, setjmp.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, siginterrupt.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdin.3, stdio.3, stdio_ext.3, stpcpy.3, stpncpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfry.3, strftime.3, string.3, strlen.3, strnlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtod.3, strtoimax.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, termios.3, tgamma.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, towctrans.3, towlower.3, towupper.3, trunc.3, tsearch.3, ttyname.3, ttyslot.3, tzset.3, ualarm.3, ulimit.3, ungetwc.3, unlocked_stdio.3, unlockpt.3, updwtmp.3, usleep.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscasecmp.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcsdup.3, wcslen.3, wcsncasecmp.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcspbrk.3, wcsrchr.3, wcsrtombs.3, wcsspn.3, wcsstr.3, wcstoimax.3, wcstok.3, wcstombs.3, wcswidth.3, wctob.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, wordexp.3, wprintf.3, xcrypt.3, xdr.3, y0.3, cciss.4, console.4, console_codes.4, console_ioctl.4, dsp56k.4, fd.4, full.4, hd.4, hpsa.4, initrd.4, intro.4, lp.4, mem.4, mouse.4, null.4, pts.4, ram.4, random.4, rtc.4, sk98lin.4, st.4, tty.4, ttyS.4, tty_ioctl.4, vcs.4, wavelan.4, acct.5, charmap.5, dir_colors.5, filesystems.5, ftpusers.5, group.5, host.conf.5, hosts.5, hosts.equiv.5, intro.5, issue.5, locale.5, motd.5, networks.5, nologin.5, nscd.conf.5, passwd.5, proc.5, protocols.5, resolv.conf.5, rpc.5, securetty.5, services.5, shells.5, termcap.5, ttytype.5, utmp.5, armscii-8.7, arp.7, ascii.7, bootparam.7, capabilities.7, charsets.7, complex.7, cp1251.7, credentials.7, ddp.7, environ.7, epoll.7, fifo.7, futex.7, glob.7, hier.7, icmp.7, inotify.7, intro.7, ip.7, ipv6.7, iso_8859-1.7, iso_8859-10.7, iso_8859-11.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-16.7, iso_8859-2.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-8.7, iso_8859-9.7, koi8-r.7, koi8-u.7, locale.7, mailaddr.7, man.7, mq_overview.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, pipe.7, posixoptions.7, pthreads.7, pty.7, raw.7, regex.7, rtld-audit.7, rtnetlink.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, socket.7, standards.7, suffixes.7, svipc.7, tcp.7, termio.7, time.7, udp.7, udplite.7, unicode.7, unix.7, uri.7, utf-8.7, x25.7, nscd.8, sync.8, tzselect.8, zdump.8, zic.8: Global fix: remove unneeded double quotes in .SH headings
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-02-24 18:01:36 +00:00
|
|
|
.SH RETURN VALUE
|
2004-11-10 17:24:20 +00:00
|
|
|
On failure both functions return \-1
|
2004-11-03 13:51:07 +00:00
|
|
|
with
|
|
|
|
.I errno
|
|
|
|
indicating the error,
|
|
|
|
otherwise
|
2004-11-10 17:24:20 +00:00
|
|
|
.BR msgsnd ()
|
|
|
|
returns 0
|
2004-11-03 13:51:07 +00:00
|
|
|
and
|
2005-04-18 13:35:29 +00:00
|
|
|
.BR msgrcv ()
|
2004-11-03 13:51:07 +00:00
|
|
|
returns the number of bytes actually copied into the
|
|
|
|
.I mtext
|
|
|
|
array.
|
|
|
|
.SH ERRORS
|
|
|
|
When
|
2004-11-10 17:24:20 +00:00
|
|
|
.BR msgsnd ()
|
2007-04-12 22:42:49 +00:00
|
|
|
fails,
|
2004-11-03 13:51:07 +00:00
|
|
|
.I errno
|
|
|
|
will be set to one among the following values:
|
2008-08-06 20:33:17 +00:00
|
|
|
.TP
|
2004-11-03 13:51:07 +00:00
|
|
|
.B EACCES
|
|
|
|
The calling process does not have write permission on the message queue,
|
|
|
|
and does not have the
|
2007-09-20 16:26:31 +00:00
|
|
|
.B CAP_IPC_OWNER
|
2004-11-03 13:51:07 +00:00
|
|
|
capability.
|
2007-04-12 22:42:49 +00:00
|
|
|
.TP
|
2004-11-03 13:51:07 +00:00
|
|
|
.B EAGAIN
|
|
|
|
The message can't be sent due to the
|
|
|
|
.I msg_qbytes
|
|
|
|
limit for the queue and
|
|
|
|
.B IPC_NOWAIT
|
2004-11-10 17:24:20 +00:00
|
|
|
was specified in
|
2005-04-18 13:35:29 +00:00
|
|
|
.IR msgflg .
|
2004-11-03 13:51:07 +00:00
|
|
|
.TP
|
|
|
|
.B EFAULT
|
|
|
|
The address pointed to by
|
|
|
|
.I msgp
|
|
|
|
isn't accessible.
|
|
|
|
.TP
|
|
|
|
.B EIDRM
|
|
|
|
The message queue was removed.
|
|
|
|
.TP
|
|
|
|
.B EINTR
|
|
|
|
Sleeping on a full message queue condition, the process caught a signal.
|
|
|
|
.TP
|
|
|
|
.B EINVAL
|
|
|
|
Invalid
|
|
|
|
.I msqid
|
2010-01-16 16:47:13 +00:00
|
|
|
value, or nonpositive
|
2004-11-03 13:51:07 +00:00
|
|
|
.I mtype
|
|
|
|
value, or
|
|
|
|
invalid
|
|
|
|
.I msgsz
|
|
|
|
value (less than 0 or greater than the system value
|
|
|
|
.BR MSGMAX ).
|
|
|
|
.TP
|
|
|
|
.B ENOMEM
|
2007-04-12 22:42:49 +00:00
|
|
|
The system does not have enough memory to make a copy of the
|
2006-02-02 10:47:23 +00:00
|
|
|
message pointed to by
|
|
|
|
.IR msgp .
|
2004-11-03 13:51:07 +00:00
|
|
|
.PP
|
|
|
|
When
|
2004-11-10 17:24:20 +00:00
|
|
|
.BR msgrcv ()
|
2007-04-12 22:42:49 +00:00
|
|
|
fails,
|
2004-11-03 13:51:07 +00:00
|
|
|
.I errno
|
|
|
|
will be set to one among the following values:
|
2008-08-06 20:33:17 +00:00
|
|
|
.TP
|
2004-11-03 13:51:07 +00:00
|
|
|
.B E2BIG
|
|
|
|
The message text length is greater than
|
|
|
|
.I msgsz
|
|
|
|
and
|
|
|
|
.B MSG_NOERROR
|
2004-11-10 17:24:20 +00:00
|
|
|
isn't specified in
|
2004-11-03 13:51:07 +00:00
|
|
|
.IR msgflg .
|
|
|
|
.TP
|
|
|
|
.B EACCES
|
|
|
|
The calling process does not have read permission on the message queue,
|
|
|
|
and does not have the
|
2007-09-20 16:26:31 +00:00
|
|
|
.B CAP_IPC_OWNER
|
2016-09-12 15:49:35 +00:00
|
|
|
capability in the user namespace that governs its IPC namespace.
|
2007-04-12 22:42:49 +00:00
|
|
|
.TP
|
2004-11-03 13:51:07 +00:00
|
|
|
.B EFAULT
|
|
|
|
The address pointed to by
|
|
|
|
.I msgp
|
|
|
|
isn't accessible.
|
|
|
|
.TP
|
|
|
|
.B EIDRM
|
|
|
|
While the process was sleeping to receive a message,
|
|
|
|
the message queue was removed.
|
|
|
|
.TP
|
|
|
|
.B EINTR
|
|
|
|
While the process was sleeping to receive a message,
|
2008-07-07 04:40:49 +00:00
|
|
|
the process caught a signal; see
|
|
|
|
.BR signal (7).
|
2004-11-03 13:51:07 +00:00
|
|
|
.TP
|
|
|
|
.B EINVAL
|
2016-02-03 07:24:17 +00:00
|
|
|
.I msqid
|
2004-11-10 17:24:20 +00:00
|
|
|
was invalid, or
|
2004-11-03 13:51:07 +00:00
|
|
|
.I msgsz
|
2004-11-10 17:24:20 +00:00
|
|
|
was less than 0.
|
2004-11-03 13:51:07 +00:00
|
|
|
.TP
|
2014-03-17 09:27:03 +00:00
|
|
|
.BR EINVAL " (since Linux 3.14)"
|
|
|
|
.I msgflg
|
|
|
|
specified
|
|
|
|
.BR MSG_COPY ,
|
|
|
|
but not
|
|
|
|
.BR IPC_NOWAIT .
|
|
|
|
.TP
|
|
|
|
.BR EINVAL " (since Linux 3.14)"
|
|
|
|
.I msgflg
|
|
|
|
specified both
|
|
|
|
.BR MSG_COPY
|
|
|
|
and
|
|
|
|
.BR MSG_EXCEPT .
|
|
|
|
.TP
|
2004-11-03 13:51:07 +00:00
|
|
|
.B ENOMSG
|
|
|
|
.B IPC_NOWAIT
|
2004-11-10 17:24:20 +00:00
|
|
|
was specified in
|
2004-11-03 13:51:07 +00:00
|
|
|
.I msgflg
|
|
|
|
and no message of the requested type existed on the message queue.
|
2014-01-23 11:52:33 +00:00
|
|
|
.TP
|
|
|
|
.B ENOMSG
|
|
|
|
.B IPC_NOWAIT
|
|
|
|
and
|
|
|
|
.B MSG_COPY
|
|
|
|
were specified in
|
|
|
|
.I msgflg
|
|
|
|
and the queue contains less than
|
|
|
|
.I msgtyp
|
|
|
|
messages.
|
|
|
|
.TP
|
|
|
|
.BR ENOSYS " (since Linux 3.8)"
|
|
|
|
.I MSG_COPY
|
|
|
|
was specified in
|
|
|
|
.IR msgflg ,
|
|
|
|
and this kernel was configured without
|
|
|
|
.BR CONFIG_CHECKPOINT_RESTORE .
|
getent.1, intro.1, time.1, _exit.2, _syscall.2, accept.2, access.2, acct.2, adjtimex.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bdflush.2, bind.2, brk.2, cacheflush.2, capget.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, flock.2, fork.2, fstatat.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpid.2, getpriority.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, getxattr.2, idle.2, init_module.2, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, intro.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl.2, ioctl_list.2, ioperm.2, iopl.2, ioprio_set.2, ipc.2, kcmp.2, kill.2, killpg.2, link.2, linkat.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, migrate_pages.2, mincore.2, mkdir.2, mkdirat.2, mknod.2, mknodat.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgctl.2, msgget.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, open.2, openat.2, outb.2, pause.2, pciconfig_read.2, perf_event_open.2, perfmonctl.2, personality.2, pipe.2, pivot_root.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, read.2, readahead.2, readdir.2, readlink.2, readlinkat.2, readv.2, reboot.2, recv.2, remap_file_pages.2, removexattr.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, select.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, setup.2, setxattr.2, shmctl.2, shmget.2, shmop.2, shutdown.2, sigaction.2, sigaltstack.2, signal.2, signalfd.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, stat.2, statfs.2, stime.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, sysctl.2, sysfs.2, sysinfo.2, syslog.2, tee.2, time.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, uname.2, unimplemented.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, MB_CUR_MAX.3, MB_LEN_MAX.3, __setfpucw.3, a64l.3, abort.3, abs.3, acos.3, acosh.3, addseverity.3, adjtime.3, aio_cancel.3, aio_error.3, aio_fsync.3, aio_read.3, aio_return.3, aio_suspend.3, aio_write.3, alloca.3, argz_add.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, backtrace.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, btowc.3, btree.3, byteorder.3, bzero.3, cabs.3, cacos.3, cacosh.3, canonicalize_file_name.3, carg.3, casin.3, casinh.3, catan.3, catanh.3, catgets.3, catopen.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cerf.3, cexp.3, cexp2.3, cfree.3, cimag.3, clearenv.3, clock.3, clock_getcpuclockid.3, clog.3, clog10.3, clog2.3, closedir.3, cmsg.3, confstr.3, conj.3, copysign.3, cos.3, cosh.3, cpow.3, cproj.3, creal.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctermid.3, ctime.3, daemon.3, dbopen.3, des_crypt.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dlopen.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, encrypt.3, end.3, endian.3, envz_add.3, erf.3, erfc.3, err.3, errno.3, error.3, ether_aton.3, euidaccess.3, exec.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fclose.3, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetgrent.3, fgetpwent.3, fgetwc.3, fgetws.3, finite.3, flockfile.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fnmatch.3, fopen.3, fpathconf.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, fread.3, frexp.3, fseek.3, fseeko.3, ftime.3, ftok.3, fts.3, ftw.3, futimes.3, fwide.3, gamma.3, gcvt.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getipnodebyname.3, getline.3, getloadavg.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getpass.3, getprotoent.3, getprotoent_r.3, getpt.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getrpcent_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, getumask.3, getusershell.3, getutent.3, getw.3, getwchar.3, glob.3, grantpt.3, gsignal.3, hash.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, isgreater.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, j0.3, key_setsecret.3, ldexp.3, lgamma.3, lio_listio.3, localeconv.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, longjmp.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, malloc.3, malloc_hook.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, mempcpy.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mpool.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, nan.3, netlink.3, nextafter.3, nl_langinfo.3, offsetof.3, on_exit.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, printf.3, profil.3, program_invocation_name.3, psignal.3, pthread_kill_other_threads_np.3, ptsname.3, putenv.3, putgrent.3, putpwent.3, puts.3, putwchar.3, qecvt.3, qsort.3, queue.3, raise.3, rand.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, recno.3, regex.3, remainder.3, remove.3, remquo.3, resolver.3, rewinddir.3, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, rtime.3, rtnetlink.3, scalb.3, scalbln.3, scandir.3, scandirat.3, scanf.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setaliasent.3, setbuf.3, setenv.3, setjmp.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, siginterrupt.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdin.3, stdio.3, stdio_ext.3, stpcpy.3, stpncpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfry.3, strftime.3, string.3, strlen.3, strnlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtod.3, strtoimax.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, termios.3, tgamma.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, towctrans.3, towlower.3, towupper.3, trunc.3, tsearch.3, ttyname.3, ttyslot.3, tzset.3, ualarm.3, ulimit.3, ungetwc.3, unlocked_stdio.3, unlockpt.3, updwtmp.3, usleep.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscasecmp.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcsdup.3, wcslen.3, wcsncasecmp.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcspbrk.3, wcsrchr.3, wcsrtombs.3, wcsspn.3, wcsstr.3, wcstoimax.3, wcstok.3, wcstombs.3, wcswidth.3, wctob.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, wordexp.3, wprintf.3, xcrypt.3, xdr.3, y0.3, cciss.4, console.4, console_codes.4, console_ioctl.4, dsp56k.4, fd.4, full.4, hd.4, hpsa.4, initrd.4, intro.4, lp.4, mem.4, mouse.4, null.4, pts.4, ram.4, random.4, rtc.4, sk98lin.4, st.4, tty.4, ttyS.4, tty_ioctl.4, vcs.4, wavelan.4, acct.5, charmap.5, dir_colors.5, filesystems.5, ftpusers.5, group.5, host.conf.5, hosts.5, hosts.equiv.5, intro.5, issue.5, locale.5, motd.5, networks.5, nologin.5, nscd.conf.5, passwd.5, proc.5, protocols.5, resolv.conf.5, rpc.5, securetty.5, services.5, shells.5, termcap.5, ttytype.5, utmp.5, armscii-8.7, arp.7, ascii.7, bootparam.7, capabilities.7, charsets.7, complex.7, cp1251.7, credentials.7, ddp.7, environ.7, epoll.7, fifo.7, futex.7, glob.7, hier.7, icmp.7, inotify.7, intro.7, ip.7, ipv6.7, iso_8859-1.7, iso_8859-10.7, iso_8859-11.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-16.7, iso_8859-2.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-8.7, iso_8859-9.7, koi8-r.7, koi8-u.7, locale.7, mailaddr.7, man.7, mq_overview.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, pipe.7, posixoptions.7, pthreads.7, pty.7, raw.7, regex.7, rtld-audit.7, rtnetlink.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, socket.7, standards.7, suffixes.7, svipc.7, tcp.7, termio.7, time.7, udp.7, udplite.7, unicode.7, unix.7, uri.7, utf-8.7, x25.7, nscd.8, sync.8, tzselect.8, zdump.8, zic.8: Global fix: remove unneeded double quotes in .SH headings
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-02-24 18:01:36 +00:00
|
|
|
.SH CONFORMING TO
|
2015-04-18 05:54:19 +00:00
|
|
|
POSIX.1-2001, POSIX.1-2008, SVr4.
|
2014-01-23 08:38:21 +00:00
|
|
|
|
|
|
|
The
|
|
|
|
.B MSG_EXCEPT
|
2014-01-23 11:52:33 +00:00
|
|
|
and
|
|
|
|
.B MSG_COPY
|
|
|
|
flags are Linux-specific;
|
|
|
|
their definitions can be obtained by defining the
|
2014-01-23 08:38:21 +00:00
|
|
|
.B _GNU_SOURCE
|
2014-01-23 11:52:33 +00:00
|
|
|
.\" MSG_COPY since glibc 2.18
|
2014-01-23 08:38:21 +00:00
|
|
|
feature test macro.
|
2004-11-03 13:51:07 +00:00
|
|
|
.SH NOTES
|
2012-05-31 12:55:28 +00:00
|
|
|
The inclusion of
|
|
|
|
.I <sys/types.h>
|
|
|
|
and
|
|
|
|
.I <sys/ipc.h>
|
|
|
|
isn't required on Linux or by any version of POSIX.
|
|
|
|
However,
|
|
|
|
some old implementations required the inclusion of these header files,
|
|
|
|
and the SVID also documented their inclusion.
|
|
|
|
Applications intended to be portable to such old systems may need
|
|
|
|
to include these header files.
|
|
|
|
.\" Like Linux, the FreeBSD man pages still document
|
|
|
|
.\" the inclusion of these header files.
|
|
|
|
|
2007-04-12 22:42:49 +00:00
|
|
|
The
|
2006-02-02 10:47:23 +00:00
|
|
|
.I msgp
|
2014-06-29 12:39:51 +00:00
|
|
|
argument is declared as \fIstruct msgbuf\ *\fP in
|
|
|
|
glibc 2.0 and 2.1.
|
2014-04-28 06:37:34 +00:00
|
|
|
It is declared as \fIvoid\ *\fP
|
2014-06-29 12:39:51 +00:00
|
|
|
in glibc 2.2 and later, as required by SUSv2 and SUSv3.
|
2006-02-02 10:47:23 +00:00
|
|
|
|
2004-12-13 08:39:46 +00:00
|
|
|
The following limits on message queue resources affect the
|
2004-11-10 17:24:20 +00:00
|
|
|
.BR msgsnd ()
|
2004-12-13 08:39:46 +00:00
|
|
|
call:
|
2008-08-06 20:33:17 +00:00
|
|
|
.TP
|
2004-11-03 13:51:07 +00:00
|
|
|
.B MSGMAX
|
2015-01-29 11:11:15 +00:00
|
|
|
Maximum size of a message text, in bytes (default value: 8192 bytes).
|
|
|
|
On Linux, this limit can be read and modified via
|
|
|
|
.IR /proc/sys/kernel/msgmax .
|
2004-11-03 13:51:07 +00:00
|
|
|
.TP
|
|
|
|
.B MSGMNB
|
2015-01-29 11:11:15 +00:00
|
|
|
Maximum number of bytes that can be held in a message queue
|
|
|
|
(default value: 16384 bytes).
|
|
|
|
On Linux, this limit can be read and modified via
|
|
|
|
.IR /proc/sys/kernel/msgmnb .
|
2014-04-28 06:40:27 +00:00
|
|
|
A privileged process
|
|
|
|
(Linux: a process with the
|
|
|
|
.B CAP_SYS_RESOURCE
|
|
|
|
capability)
|
|
|
|
can increase the size of a message queue beyond
|
2004-11-03 13:51:07 +00:00
|
|
|
.B MSGMNB
|
2015-01-29 11:11:15 +00:00
|
|
|
using the
|
2007-05-11 23:07:02 +00:00
|
|
|
.BR msgctl (2)
|
2015-01-29 11:11:15 +00:00
|
|
|
.B IPC_SET
|
|
|
|
operation.
|
2004-11-03 13:51:07 +00:00
|
|
|
.PP
|
2014-04-28 06:46:22 +00:00
|
|
|
The implementation has no intrinsic system-wide limits on the
|
2004-11-03 13:51:07 +00:00
|
|
|
number of message headers
|
|
|
|
.RB ( MSGTQL )
|
2014-04-28 06:46:22 +00:00
|
|
|
and the number of bytes in the message pool
|
2004-11-03 13:51:07 +00:00
|
|
|
.RB ( MSGPOOL ).
|
2014-01-23 11:52:33 +00:00
|
|
|
.SH BUGS
|
2014-03-17 09:27:03 +00:00
|
|
|
In Linux 3.13 and earlier,
|
|
|
|
if
|
2014-01-23 11:52:33 +00:00
|
|
|
.BR msgrcv ()
|
2014-03-17 09:27:03 +00:00
|
|
|
was called with the
|
2014-01-24 11:06:21 +00:00
|
|
|
.BR MSG_COPY
|
2014-01-23 11:52:33 +00:00
|
|
|
flag, but without
|
|
|
|
.BR IPC_NOWAIT ,
|
2014-03-17 09:27:03 +00:00
|
|
|
and the message queue contained less than
|
2014-01-23 11:52:33 +00:00
|
|
|
.I msgtyp
|
2014-03-17 09:27:03 +00:00
|
|
|
messages, then the call would block until the next message is written
|
2014-01-23 11:52:33 +00:00
|
|
|
to the queue.
|
adjtimex.2, bind.2, cacheflush.2, clone.2, fallocate.2, fanotify_init.2, fanotify_mark.2, flock.2, futex.2, getdents.2, getpriority.2, getrlimit.2, gettid.2, gettimeofday.2, ioprio_set.2, kexec_load.2, migrate_pages.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, msgop.2, nfsservctl.2, perf_event_open.2, pread.2, ptrace.2, recvmmsg.2, rename.2, restart_syscall.2, sched_setattr.2, send.2, shmop.2, shutdown.2, sigaction.2, signalfd.2, syscalls.2, timer_create.2, timerfd_create.2, tkill.2, vmsplice.2, wait.2, aio_init.3, confstr.3, exit.3, fmemopen.3, fopen.3, getaddrinfo.3, getauxval.3, getspnam.3, isalpha.3, isatty.3, mallinfo.3, malloc.3, mallopt.3, psignal.3, pthread_attr_setinheritsched.3, qecvt.3, queue.3, rtnetlink.3, strerror.3, strftime.3, toupper.3, towlower.3, towupper.3, initrd.4, locale.5, proc.5, bootparam.7, capabilities.7, ddp.7, fanotify.7, icmp.7, inotify.7, ip.7, ipv6.7, netdevice.7, netlink.7, path_resolution.7, rtld-audit.7, rtnetlink.7, sched.7, signal.7, socket.7, svipc.7, tcp.7, unix.7, ld.so.8: srcfix: Update FIXMEs
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2014-08-21 21:47:44 +00:00
|
|
|
.\" http://marc.info/?l=linux-kernel&m=139048542803605&w=2
|
2014-03-17 09:27:03 +00:00
|
|
|
At that point, the call would return a copy of the message,
|
2014-01-23 11:52:33 +00:00
|
|
|
.I regardless
|
2014-03-17 09:27:03 +00:00
|
|
|
of whether that message was at the ordinal position
|
2014-01-23 11:52:33 +00:00
|
|
|
.IR msgtyp .
|
2014-03-17 09:27:03 +00:00
|
|
|
This bug is fixed
|
|
|
|
.\" commit 4f87dac386cc43d5525da7a939d4b4e7edbea22c
|
|
|
|
in Linux 3.14.
|
2014-01-23 11:52:33 +00:00
|
|
|
|
|
|
|
Specifying both
|
|
|
|
.B MSG_COPY
|
|
|
|
and
|
|
|
|
.B MSC_EXCEPT
|
|
|
|
in
|
|
|
|
.I msgflg
|
|
|
|
is a logical error (since these flags impose different interpretations on
|
|
|
|
.IR msgtyp ).
|
2014-03-17 09:27:03 +00:00
|
|
|
In Linux 3.13 and earlier,
|
adjtimex.2, bind.2, cacheflush.2, clone.2, fallocate.2, fanotify_init.2, fanotify_mark.2, flock.2, futex.2, getdents.2, getpriority.2, getrlimit.2, gettid.2, gettimeofday.2, ioprio_set.2, kexec_load.2, migrate_pages.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, msgop.2, nfsservctl.2, perf_event_open.2, pread.2, ptrace.2, recvmmsg.2, rename.2, restart_syscall.2, sched_setattr.2, send.2, shmop.2, shutdown.2, sigaction.2, signalfd.2, syscalls.2, timer_create.2, timerfd_create.2, tkill.2, vmsplice.2, wait.2, aio_init.3, confstr.3, exit.3, fmemopen.3, fopen.3, getaddrinfo.3, getauxval.3, getspnam.3, isalpha.3, isatty.3, mallinfo.3, malloc.3, mallopt.3, psignal.3, pthread_attr_setinheritsched.3, qecvt.3, queue.3, rtnetlink.3, strerror.3, strftime.3, toupper.3, towlower.3, towupper.3, initrd.4, locale.5, proc.5, bootparam.7, capabilities.7, ddp.7, fanotify.7, icmp.7, inotify.7, ip.7, ipv6.7, netdevice.7, netlink.7, path_resolution.7, rtld-audit.7, rtnetlink.7, sched.7, signal.7, socket.7, svipc.7, tcp.7, unix.7, ld.so.8: srcfix: Update FIXMEs
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2014-08-21 21:47:44 +00:00
|
|
|
.\" http://marc.info/?l=linux-kernel&m=139048542803605&w=2
|
2014-03-17 09:27:03 +00:00
|
|
|
this error was not diagnosed by
|
|
|
|
.BR msgrcv ().
|
|
|
|
This bug is fixed
|
|
|
|
.\" commit 4f87dac386cc43d5525da7a939d4b4e7edbea22c
|
|
|
|
in Linux 3.14.
|
2015-03-05 01:31:03 +00:00
|
|
|
.SH EXAMPLE
|
|
|
|
The program below demonstrates the use of
|
|
|
|
.BR msgsnd ()
|
|
|
|
and
|
|
|
|
.BR msgrcv ().
|
|
|
|
|
|
|
|
The example program is first run with the \fB\-s\fP option to send a
|
2015-03-09 07:30:16 +00:00
|
|
|
message and then run again with the \fB\-r\fP option to receive a
|
2015-03-05 01:31:03 +00:00
|
|
|
message.
|
|
|
|
|
|
|
|
The following shell session shows a sample run of the program:
|
|
|
|
.in +4n
|
|
|
|
.nf
|
|
|
|
|
|
|
|
.RB "$" " ./a.out \-s"
|
|
|
|
sent: a message at Wed Mar 4 16:25:45 2015
|
|
|
|
|
|
|
|
.RB "$" " ./a.out \-r"
|
|
|
|
message received: a message at Wed Mar 4 16:25:45 2015
|
|
|
|
.fi
|
|
|
|
.in
|
|
|
|
.SS Program source
|
|
|
|
\&
|
|
|
|
.nf
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <time.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <sys/ipc.h>
|
|
|
|
#include <sys/msg.h>
|
|
|
|
|
|
|
|
struct msgbuf {
|
|
|
|
long mtype;
|
|
|
|
char mtext[80];
|
|
|
|
};
|
|
|
|
|
|
|
|
static void
|
|
|
|
usage(char *prog_name, char *msg)
|
|
|
|
{
|
|
|
|
if (msg != NULL)
|
|
|
|
fputs(msg, stderr);
|
|
|
|
|
|
|
|
fprintf(stderr, "Usage: %s [options]\\n", prog_name);
|
|
|
|
fprintf(stderr, "Options are:\\n");
|
|
|
|
fprintf(stderr, "\-s send message using msgsnd()\\n");
|
|
|
|
fprintf(stderr, "\-r read message using msgrcv()\\n");
|
|
|
|
fprintf(stderr, "\-t message type (default is 1)\\n");
|
|
|
|
fprintf(stderr, "\-k message queue key (default is 1234)\\n");
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
send_msg(int qid, int msgtype)
|
|
|
|
{
|
|
|
|
struct msgbuf msg;
|
|
|
|
time_t t;
|
|
|
|
|
|
|
|
msg.mtype = msgtype;
|
|
|
|
|
|
|
|
time(&t);
|
2015-03-09 07:30:16 +00:00
|
|
|
snprintf(msg.mtext, sizeof(msg.mtext), "a message at %s",
|
|
|
|
ctime(&t));
|
2015-03-05 01:31:03 +00:00
|
|
|
|
2015-03-09 07:30:16 +00:00
|
|
|
if (msgsnd(qid, (void *) &msg, sizeof(msg.mtext),
|
|
|
|
IPC_NOWAIT) == \-1) {
|
2015-03-05 01:31:03 +00:00
|
|
|
perror("msgsnd error");
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
printf("sent: %s\\n", msg.mtext);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
get_msg(int qid, int msgtype)
|
|
|
|
{
|
|
|
|
struct msgbuf msg;
|
|
|
|
|
|
|
|
if (msgrcv(qid, (void *) &msg, sizeof(msg.mtext), msgtype,
|
|
|
|
MSG_NOERROR | IPC_NOWAIT) == \-1) {
|
|
|
|
if (errno != ENOMSG) {
|
|
|
|
perror("msgrcv");
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
printf("No message available for msgrcv()\\n");
|
|
|
|
} else
|
|
|
|
printf("message received: %s\\n", msg.mtext);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
main(int argc, char *argv[])
|
|
|
|
{
|
|
|
|
int qid, opt;
|
|
|
|
int mode = 0; /* 1 = send, 2 = receive */
|
|
|
|
int msgtype = 1;
|
|
|
|
int msgkey = 1234;
|
|
|
|
|
|
|
|
while ((opt = getopt(argc, argv, "srt:k:")) != \-1) {
|
|
|
|
switch (opt) {
|
|
|
|
case \(aqs\(aq:
|
|
|
|
mode = 1;
|
|
|
|
break;
|
|
|
|
case \(aqr\(aq:
|
|
|
|
mode = 2;
|
|
|
|
break;
|
|
|
|
case \(aqt\(aq:
|
|
|
|
msgtype = atoi(optarg);
|
|
|
|
if (msgtype <= 0)
|
|
|
|
usage(argv[0], "\-t option must be greater than 0\\n");
|
|
|
|
break;
|
|
|
|
case \(aqk\(aq:
|
|
|
|
msgkey = atoi(optarg);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
usage(argv[0], "Unrecognized option\\n");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (mode == 0)
|
|
|
|
usage(argv[0], "must use either \-s or \-r option\\n");
|
|
|
|
|
|
|
|
qid = msgget(msgkey, IPC_CREAT | 0666);
|
|
|
|
|
|
|
|
if (qid == \-1) {
|
|
|
|
perror("msgget");
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (mode == 2)
|
|
|
|
get_msg(qid, msgtype);
|
|
|
|
else
|
|
|
|
send_msg(qid, msgtype);
|
|
|
|
|
|
|
|
exit(EXIT_SUCCESS);
|
|
|
|
}
|
|
|
|
.fi
|
getent.1, intro.1, time.1, _exit.2, _syscall.2, accept.2, access.2, acct.2, adjtimex.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bdflush.2, bind.2, brk.2, cacheflush.2, capget.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, flock.2, fork.2, fstatat.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpid.2, getpriority.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, getxattr.2, idle.2, init_module.2, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, intro.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl.2, ioctl_list.2, ioperm.2, iopl.2, ioprio_set.2, ipc.2, kcmp.2, kill.2, killpg.2, link.2, linkat.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, migrate_pages.2, mincore.2, mkdir.2, mkdirat.2, mknod.2, mknodat.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgctl.2, msgget.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, open.2, openat.2, outb.2, pause.2, pciconfig_read.2, perf_event_open.2, perfmonctl.2, personality.2, pipe.2, pivot_root.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, read.2, readahead.2, readdir.2, readlink.2, readlinkat.2, readv.2, reboot.2, recv.2, remap_file_pages.2, removexattr.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, select.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, setup.2, setxattr.2, shmctl.2, shmget.2, shmop.2, shutdown.2, sigaction.2, sigaltstack.2, signal.2, signalfd.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, stat.2, statfs.2, stime.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, sysctl.2, sysfs.2, sysinfo.2, syslog.2, tee.2, time.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, uname.2, unimplemented.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, MB_CUR_MAX.3, MB_LEN_MAX.3, __setfpucw.3, a64l.3, abort.3, abs.3, acos.3, acosh.3, addseverity.3, adjtime.3, aio_cancel.3, aio_error.3, aio_fsync.3, aio_read.3, aio_return.3, aio_suspend.3, aio_write.3, alloca.3, argz_add.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, backtrace.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, btowc.3, btree.3, byteorder.3, bzero.3, cabs.3, cacos.3, cacosh.3, canonicalize_file_name.3, carg.3, casin.3, casinh.3, catan.3, catanh.3, catgets.3, catopen.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cerf.3, cexp.3, cexp2.3, cfree.3, cimag.3, clearenv.3, clock.3, clock_getcpuclockid.3, clog.3, clog10.3, clog2.3, closedir.3, cmsg.3, confstr.3, conj.3, copysign.3, cos.3, cosh.3, cpow.3, cproj.3, creal.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctermid.3, ctime.3, daemon.3, dbopen.3, des_crypt.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dlopen.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, encrypt.3, end.3, endian.3, envz_add.3, erf.3, erfc.3, err.3, errno.3, error.3, ether_aton.3, euidaccess.3, exec.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fclose.3, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetgrent.3, fgetpwent.3, fgetwc.3, fgetws.3, finite.3, flockfile.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fnmatch.3, fopen.3, fpathconf.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, fread.3, frexp.3, fseek.3, fseeko.3, ftime.3, ftok.3, fts.3, ftw.3, futimes.3, fwide.3, gamma.3, gcvt.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getipnodebyname.3, getline.3, getloadavg.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getpass.3, getprotoent.3, getprotoent_r.3, getpt.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getrpcent_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, getumask.3, getusershell.3, getutent.3, getw.3, getwchar.3, glob.3, grantpt.3, gsignal.3, hash.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, isgreater.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, j0.3, key_setsecret.3, ldexp.3, lgamma.3, lio_listio.3, localeconv.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, longjmp.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, malloc.3, malloc_hook.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, mempcpy.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mpool.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, nan.3, netlink.3, nextafter.3, nl_langinfo.3, offsetof.3, on_exit.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, printf.3, profil.3, program_invocation_name.3, psignal.3, pthread_kill_other_threads_np.3, ptsname.3, putenv.3, putgrent.3, putpwent.3, puts.3, putwchar.3, qecvt.3, qsort.3, queue.3, raise.3, rand.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, recno.3, regex.3, remainder.3, remove.3, remquo.3, resolver.3, rewinddir.3, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, rtime.3, rtnetlink.3, scalb.3, scalbln.3, scandir.3, scandirat.3, scanf.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setaliasent.3, setbuf.3, setenv.3, setjmp.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, siginterrupt.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdin.3, stdio.3, stdio_ext.3, stpcpy.3, stpncpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfry.3, strftime.3, string.3, strlen.3, strnlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtod.3, strtoimax.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, termios.3, tgamma.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, towctrans.3, towlower.3, towupper.3, trunc.3, tsearch.3, ttyname.3, ttyslot.3, tzset.3, ualarm.3, ulimit.3, ungetwc.3, unlocked_stdio.3, unlockpt.3, updwtmp.3, usleep.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscasecmp.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcsdup.3, wcslen.3, wcsncasecmp.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcspbrk.3, wcsrchr.3, wcsrtombs.3, wcsspn.3, wcsstr.3, wcstoimax.3, wcstok.3, wcstombs.3, wcswidth.3, wctob.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, wordexp.3, wprintf.3, xcrypt.3, xdr.3, y0.3, cciss.4, console.4, console_codes.4, console_ioctl.4, dsp56k.4, fd.4, full.4, hd.4, hpsa.4, initrd.4, intro.4, lp.4, mem.4, mouse.4, null.4, pts.4, ram.4, random.4, rtc.4, sk98lin.4, st.4, tty.4, ttyS.4, tty_ioctl.4, vcs.4, wavelan.4, acct.5, charmap.5, dir_colors.5, filesystems.5, ftpusers.5, group.5, host.conf.5, hosts.5, hosts.equiv.5, intro.5, issue.5, locale.5, motd.5, networks.5, nologin.5, nscd.conf.5, passwd.5, proc.5, protocols.5, resolv.conf.5, rpc.5, securetty.5, services.5, shells.5, termcap.5, ttytype.5, utmp.5, armscii-8.7, arp.7, ascii.7, bootparam.7, capabilities.7, charsets.7, complex.7, cp1251.7, credentials.7, ddp.7, environ.7, epoll.7, fifo.7, futex.7, glob.7, hier.7, icmp.7, inotify.7, intro.7, ip.7, ipv6.7, iso_8859-1.7, iso_8859-10.7, iso_8859-11.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-16.7, iso_8859-2.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-8.7, iso_8859-9.7, koi8-r.7, koi8-u.7, locale.7, mailaddr.7, man.7, mq_overview.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, pipe.7, posixoptions.7, pthreads.7, pty.7, raw.7, regex.7, rtld-audit.7, rtnetlink.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, socket.7, standards.7, suffixes.7, svipc.7, tcp.7, termio.7, time.7, udp.7, udplite.7, unicode.7, unix.7, uri.7, utf-8.7, x25.7, nscd.8, sync.8, tzselect.8, zdump.8, zic.8: Global fix: remove unneeded double quotes in .SH headings
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-02-24 18:01:36 +00:00
|
|
|
.SH SEE ALSO
|
2004-11-03 13:51:07 +00:00
|
|
|
.BR msgctl (2),
|
|
|
|
.BR msgget (2),
|
2006-03-05 20:58:40 +00:00
|
|
|
.BR capabilities (7),
|
2006-04-21 03:53:43 +00:00
|
|
|
.BR mq_overview (7),
|
|
|
|
.BR svipc (7)
|