2004-11-03 13:51:07 +00:00
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.\" Copyright (c) 1994,1995 Mike Battersby <mib@deakin.edu.au>
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2007-09-20 06:52:22 +00:00
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.\" and Copyright 2004, 2005 Michael Kerrisk <mtk.manpages@gmail.com>
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2004-11-03 13:51:07 +00:00
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.\" based on work by faith@cs.unc.edu
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.\"
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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
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.\" %%%LICENSE_START(VERBATIM)
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2004-11-03 13:51:07 +00:00
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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2007-04-12 22:42:49 +00:00
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.\"
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2004-11-03 13:51:07 +00:00
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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2007-04-12 22:42:49 +00:00
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.\"
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2004-11-03 13:51:07 +00:00
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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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
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.\" %%%LICENSE_END
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2004-11-03 13:51:07 +00:00
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.\"
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.\" Modified, aeb, 960424
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.\" Modified Fri Jan 31 17:31:20 1997 by Eric S. Raymond <esr@thyrsus.com>
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.\" Modified Thu Nov 26 02:12:45 1998 by aeb - add SIGCHLD stuff.
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2004-11-11 14:09:54 +00:00
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.\" Modified Sat May 8 17:40:19 1999 by Matthew Wilcox
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.\" add POSIX.1b signals
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.\" Modified Sat Dec 29 01:44:52 2001 by Evan Jones <ejones@uwaterloo.ca>
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.\" SA_ONSTACK
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2007-09-20 06:52:22 +00:00
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.\" Modified 2004-11-11 by Michael Kerrisk <mtk.manpages@gmail.com>
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2004-11-11 14:09:54 +00:00
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.\" Added mention of SIGCONT under SA_NOCLDSTOP
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.\" Added SA_NOCLDWAIT
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2007-09-20 06:52:22 +00:00
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.\" Modified 2004-11-17 by Michael Kerrisk <mtk.manpages@gmail.com>
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2004-11-18 13:37:14 +00:00
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.\" Updated discussion for POSIX.1-2001 and SIGCHLD and sa_flags.
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.\" Formatting fixes
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2004-12-09 10:26:18 +00:00
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.\" 2004-12-09, mtk, added SI_TKILL + other minor changes
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2005-09-15 11:47:39 +00:00
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.\" 2005-09-15, mtk, split sigpending(), sigprocmask(), sigsuspend()
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.\" out of this page into separate pages.
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2010-06-11 04:57:50 +00:00
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.\" 2010-06-11 Andi Kleen, add hwpoison signal extensions
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.\" 2010-06-11 mtk, improvements to discussion of various siginfo_t fields.
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2015-01-18 06:26:17 +00:00
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.\" 2015-01-17, Kees Cook <keescook@chromium.org>
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.\" Added notes on ptrace SIGTRAP and SYS_SECCOMP.
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2004-11-03 13:51:07 +00:00
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.\"
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iconv.1, ldd.1, accept.2, access.2, add_key.2, arch_prctl.2, bpf.2, chmod.2, chown.2, close_range.2, copy_file_range.2, execve.2, execveat.2, fanotify_mark.2, futex.2, futimesat.2, getpriority.2, intro.2, ioctl_tty.2, keyctl.2, link.2, membarrier.2, mkdir.2, mknod.2, mlock.2, mount.2, mount_setattr.2, open.2, open_by_handle_at.2, perf_event_open.2, pidfd_open.2, readlink.2, readv.2, rename.2, request_key.2, seccomp.2, sigaction.2, stat.2, statx.2, symlink.2, syscalls.2, umount.2, unlink.2, utimensat.2, wait.2, bsearch.3, fflush.3, getaddrinfo.3, getauxval.3, getopt.3, getsubopt.3, mkfifo.3, pthread_mutex_consistent.3, pthread_setname_np.3, pthread_tryjoin_np.3, scandir.3, sem_wait.3, stailq.3, strlen.3, strstr.3, termios.3, tsearch.3, wcslen.3, wcstok.3, wordexp.3, proc.5, capabilities.7, cgroups.7, fanotify.7, mount_namespaces.7, namespaces.7, path_resolution.7, pipe.7, posixoptions.7, user_namespaces.7, vdso.7, iconvconfig.8, ld.so.8: tstamp
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-08-27 00:44:07 +00:00
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.TH SIGACTION 2 2021-08-27 "Linux" "Linux Programmer's Manual"
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2004-11-03 13:51:07 +00:00
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.SH NAME
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2015-02-19 09:17:07 +00:00
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sigaction, rt_sigaction \- examine and change a signal action
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2004-11-03 13:51:07 +00:00
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.SH SYNOPSIS
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2007-04-03 14:04:54 +00:00
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.nf
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2004-11-03 13:51:07 +00:00
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.B #include <signal.h>
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_exit.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, create_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, exit_group.2, fanotify_mark.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpid.2, getpriority.2, getrandom.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, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, ioctl.2, ioctl_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_getfsmap.2, ioctl_tty.2, ioperm.2, iopl.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, pause.2, pciconfig_read.2, perf_event_open.2, perfmonctl.2, personality.2, pkey_alloc.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, read.2, readahead.2, readdir.2, readv.2, reboot.2, recv.2, remap_file_pages.2, removexattr.2, rename.2, request_key.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, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, set_mempolicy.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, setup.2, setxattr.2, sgetmask.2, shmctl.2, shmget.2, shutdown.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, stat.2, statfs.2, stime.2, swapon.2, symlink.2, sync.2, sysctl.2, sysinfo.2, syslog.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, uname.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, __ppc_get_timebase.3, __ppc_set_ppr_med.3, __ppc_yield.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_init.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, basename.3, bcmp.3, bcopy.3, bsd_signal.3, bsearch.3, bstring.3, btowc.3, byteorder.3, cabs.3, cacos.3, cacosh.3, canonicalize_file_name.3, carg.3, casin.3, casinh.3, catan.3, catanh.3, catopen.3, cbrt.3, ccos.3, ccosh.3, ceil.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, difftime.3, dirfd.3, div.3, dlerror.3, dlopen.3, dlsym.3, drand48.3, drand48_r.3, duplocale.3, dysize.3, ecvt.3, ecvt_r.3, encrypt.3, endian.3, erf.3, erfc.3, err.3, errno.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, fgetc.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, get_nprocs_conf.3, get_phys_pages.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getentropy.3, getenv.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.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_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getsubopt.3, getttyent.3, getumask.3, getusershell.3, getutent.3, getw.3, getwchar.3, glob.3, grantpt.3, group_member.3, gsignal.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_net_pton.3, inet_ntop.3, infnan.3, initgroups.3, insque.3, isalpha.3, isatty.3, isfdtype.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, killpg.3, ldexp.3, lgamma.3, localeconv.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, malloc.3, malloc_get_state.3, malloc_hook.3, malloc_info.3, matherr.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, mempcpy.3, memset.3, mkdtemp.3, mkfifo.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, newlocale.3, nextafter.3, nl_langinfo.3, offsetof.3, on_exit.3, open_memstream.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_madvise.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, printf.3, profil.3, psignal.3, pthread_atfork.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_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_rwlockattr_setkind_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, ptsname.3, putenv.3, putgrent.3, putpwent.3, puts.3, putwchar.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, remainder.3, remove.3, remquo.3, resolver.3, rewinddir.3, rexec.3, rint.3, round.3, rpmatch.3, rtime.3, rtnetlink.3, scalb.3, scalbln.3, scandir.3, scanf.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, setaliasent.3, setbuf.3, setenv.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, siginterrupt.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigvec.3, sigwait.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.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, strfromd.3, strfry.3, strftime.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, uselocale.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, y0.3, dsp56k.4, random.4, rtc.4, st.4, ddp.7, ip.7, ipv6.7, packet.7, rtnetlink.7, socket.7, tcp.7, udp.7, udplite.7, x25.7: ffix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-15 15:16:29 +00:00
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.PP
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2021-02-13 23:10:17 +00:00
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.BI "int sigaction(int " signum ", const struct sigaction *restrict " act ,
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.BI " struct sigaction *restrict " oldact );
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2007-04-03 14:04:54 +00:00
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.fi
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_exit.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, create_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, exit_group.2, fanotify_mark.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpid.2, getpriority.2, getrandom.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, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, ioctl.2, ioctl_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_getfsmap.2, ioctl_tty.2, ioperm.2, iopl.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, pause.2, pciconfig_read.2, perf_event_open.2, perfmonctl.2, personality.2, pkey_alloc.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, read.2, readahead.2, readdir.2, readv.2, reboot.2, recv.2, remap_file_pages.2, removexattr.2, rename.2, request_key.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, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, set_mempolicy.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, setup.2, setxattr.2, sgetmask.2, shmctl.2, shmget.2, shutdown.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, stat.2, statfs.2, stime.2, swapon.2, symlink.2, sync.2, sysctl.2, sysinfo.2, syslog.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, uname.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, __ppc_get_timebase.3, __ppc_set_ppr_med.3, __ppc_yield.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_init.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, basename.3, bcmp.3, bcopy.3, bsd_signal.3, bsearch.3, bstring.3, btowc.3, byteorder.3, cabs.3, cacos.3, cacosh.3, canonicalize_file_name.3, carg.3, casin.3, casinh.3, catan.3, catanh.3, catopen.3, cbrt.3, ccos.3, ccosh.3, ceil.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, difftime.3, dirfd.3, div.3, dlerror.3, dlopen.3, dlsym.3, drand48.3, drand48_r.3, duplocale.3, dysize.3, ecvt.3, ecvt_r.3, encrypt.3, endian.3, erf.3, erfc.3, err.3, errno.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, fgetc.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, get_nprocs_conf.3, get_phys_pages.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getentropy.3, getenv.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.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_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getsubopt.3, getttyent.3, getumask.3, getusershell.3, getutent.3, getw.3, getwchar.3, glob.3, grantpt.3, group_member.3, gsignal.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_net_pton.3, inet_ntop.3, infnan.3, initgroups.3, insque.3, isalpha.3, isatty.3, isfdtype.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, killpg.3, ldexp.3, lgamma.3, localeconv.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, malloc.3, malloc_get_state.3, malloc_hook.3, malloc_info.3, matherr.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, mempcpy.3, memset.3, mkdtemp.3, mkfifo.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, newlocale.3, nextafter.3, nl_langinfo.3, offsetof.3, on_exit.3, open_memstream.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_madvise.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, printf.3, profil.3, psignal.3, pthread_atfork.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_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_rwlockattr_setkind_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, ptsname.3, putenv.3, putgrent.3, putpwent.3, puts.3, putwchar.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, remainder.3, remove.3, remquo.3, resolver.3, rewinddir.3, rexec.3, rint.3, round.3, rpmatch.3, rtime.3, rtnetlink.3, scalb.3, scalbln.3, scandir.3, scanf.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, setaliasent.3, setbuf.3, setenv.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, siginterrupt.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigvec.3, sigwait.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.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, strfromd.3, strfry.3, strftime.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, uselocale.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, y0.3, dsp56k.4, random.4, rtc.4, st.4, ddp.7, ip.7, ipv6.7, packet.7, rtnetlink.7, socket.7, tcp.7, udp.7, udplite.7, x25.7: ffix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-15 15:16:29 +00:00
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.PP
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_exit.2, access.2, acct.2, brk.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, fsync.2, futimesat.2, getdomainname.2, getgroups.2, gethostname.2, getpagesize.2, getrlimit.2, getsid.2, gettimeofday.2, kill.2, link.2, madvise.2, mincore.2, mkdir.2, mknod.2, nanosleep.2, nice.2, open.2, posix_fadvise.2, pread.2, process_vm_readv.2, readlink.2, readv.2, rename.2, select.2, semop.2, seteuid.2, setpgid.2, setreuid.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigsuspend.2, sigwaitinfo.2, stat.2, stime.2, symlink.2, sync.2, syscall.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, truncate.2, unlink.2, utimensat.2, vfork.2, vhangup.2, wait.2, wait4.2, a64l.3, abs.3, acos.3, acosh.3, addseverity.3, adjtime.3, asin.3, asinh.3, atan.3, atan2.3, atanh.3, atoi.3, bsd_signal.3, cbrt.3, ceil.3, cfree.3, clearenv.3, clock_getcpuclockid.3, confstr.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, daemon.3, dirfd.3, div.3, drand48.3, drand48_r.3, duplocale.3, dysize.3, ecvt.3, ecvt_r.3, endian.3, erf.3, erfc.3, exec.3, exp.3, exp2.3, expm1.3, fabs.3, fdim.3, ferror.3, fexecve.3, ffs.3, fgetgrent.3, fgetpwent.3, finite.3, flockfile.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fopen.3, fpclassify.3, frexp.3, fseeko.3, ftw.3, futimes.3, fwide.3, gamma.3, gcvt.3, getaddrinfo.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getentropy.3, getenv.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getline.3, getloadavg.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent_r.3, getopt.3, getpass.3, getprotoent_r.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent_r.3, getservent_r.3, getspnam.3, getsubopt.3, getusershell.3, getw.3, grantpt.3, group_member.3, gsignal.3, hypot.3, ilogb.3, inet.3, inet_net_pton.3, initgroups.3, insque.3, isalpha.3, isfdtype.3, isgreater.3, iswblank.3, j0.3, killpg.3, ldexp.3, lgamma.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, malloc.3, mbsnrtowcs.3, memchr.3, mkdtemp.3, mkfifo.3, mkstemp.3, mktemp.3, modf.3, mq_receive.3, mq_send.3, nan.3, newlocale.3, nextafter.3, nl_langinfo.3, on_exit.3, open_memstream.3, opendir.3, perror.3, popen.3, posix_fallocate.3, posix_madvise.3, posix_memalign.3, posix_openpt.3, pow.3, printf.3, profil.3, psignal.3, pthread_attr_setstack.3, pthread_cleanup_push_defer_np.3, pthread_kill.3, pthread_mutex_consistent.3, pthread_mutexattr_setrobust.3, pthread_rwlockattr_setkind_np.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_spin_init.3, pthread_spin_lock.3, ptsname.3, putenv.3, putpwent.3, qecvt.3, qsort.3, rand.3, random.3, random_r.3, rcmd.3, readdir_r.3, realpath.3, remainder.3, remquo.3, rint.3, round.3, rpmatch.3, scalb.3, scalbln.3, scandir.3, scanf.3, sched_getcpu.3, seekdir.3, sem_wait.3, setbuf.3, setenv.3, setjmp.3, setnetgrent.3, siginterrupt.3, signbit.3, significand.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sockatmark.3, sqrt.3, stpcpy.3, stpncpy.3, strdup.3, strerror.3, strfromd.3, strnlen.3, strsep.3, strsignal.3, strtod.3, strtok.3, strtol.3, strtoul.3, syslog.3, tan.3, tanh.3, telldir.3, tempnam.3, termios.3, tgamma.3, timegm.3, timeradd.3, tmpnam.3, toascii.3, toupper.3, towlower.3, towupper.3, trunc.3, ttyslot.3, tzset.3, ualarm.3, unlocked_stdio.3, unlockpt.3, uselocale.3, usleep.3, wcpcpy.3, wcpncpy.3, wcscasecmp.3, wcsdup.3, wcsncasecmp.3, wcsnlen.3, wcsnrtombs.3, wordexp.3, wprintf.3, y0.3: srcfix: use better macros in SYNOPSIS
Around the text:
"Feature Test Macro Requirements for glibc..."
replace ".in -4n/.in" with ".RS -4/.RE".
The latter form is more idiomatic use of man macros.
The nroff output is unchanged.
Reported-by: G. Branden Robinson <g.branden.robinson@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-09-29 13:06:31 +00:00
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.RS -4
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2008-08-29 15:50:13 +00:00
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Feature Test Macro Requirements for glibc (see
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.BR feature_test_macros (7)):
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_exit.2, access.2, acct.2, brk.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, fsync.2, futimesat.2, getdomainname.2, getgroups.2, gethostname.2, getpagesize.2, getrlimit.2, getsid.2, gettimeofday.2, kill.2, link.2, madvise.2, mincore.2, mkdir.2, mknod.2, nanosleep.2, nice.2, open.2, posix_fadvise.2, pread.2, process_vm_readv.2, readlink.2, readv.2, rename.2, select.2, semop.2, seteuid.2, setpgid.2, setreuid.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigsuspend.2, sigwaitinfo.2, stat.2, stime.2, symlink.2, sync.2, syscall.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, truncate.2, unlink.2, utimensat.2, vfork.2, vhangup.2, wait.2, wait4.2, a64l.3, abs.3, acos.3, acosh.3, addseverity.3, adjtime.3, asin.3, asinh.3, atan.3, atan2.3, atanh.3, atoi.3, bsd_signal.3, cbrt.3, ceil.3, cfree.3, clearenv.3, clock_getcpuclockid.3, confstr.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, daemon.3, dirfd.3, div.3, drand48.3, drand48_r.3, duplocale.3, dysize.3, ecvt.3, ecvt_r.3, endian.3, erf.3, erfc.3, exec.3, exp.3, exp2.3, expm1.3, fabs.3, fdim.3, ferror.3, fexecve.3, ffs.3, fgetgrent.3, fgetpwent.3, finite.3, flockfile.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fopen.3, fpclassify.3, frexp.3, fseeko.3, ftw.3, futimes.3, fwide.3, gamma.3, gcvt.3, getaddrinfo.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getentropy.3, getenv.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getline.3, getloadavg.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent_r.3, getopt.3, getpass.3, getprotoent_r.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent_r.3, getservent_r.3, getspnam.3, getsubopt.3, getusershell.3, getw.3, grantpt.3, group_member.3, gsignal.3, hypot.3, ilogb.3, inet.3, inet_net_pton.3, initgroups.3, insque.3, isalpha.3, isfdtype.3, isgreater.3, iswblank.3, j0.3, killpg.3, ldexp.3, lgamma.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, malloc.3, mbsnrtowcs.3, memchr.3, mkdtemp.3, mkfifo.3, mkstemp.3, mktemp.3, modf.3, mq_receive.3, mq_send.3, nan.3, newlocale.3, nextafter.3, nl_langinfo.3, on_exit.3, open_memstream.3, opendir.3, perror.3, popen.3, posix_fallocate.3, posix_madvise.3, posix_memalign.3, posix_openpt.3, pow.3, printf.3, profil.3, psignal.3, pthread_attr_setstack.3, pthread_cleanup_push_defer_np.3, pthread_kill.3, pthread_mutex_consistent.3, pthread_mutexattr_setrobust.3, pthread_rwlockattr_setkind_np.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_spin_init.3, pthread_spin_lock.3, ptsname.3, putenv.3, putpwent.3, qecvt.3, qsort.3, rand.3, random.3, random_r.3, rcmd.3, readdir_r.3, realpath.3, remainder.3, remquo.3, rint.3, round.3, rpmatch.3, scalb.3, scalbln.3, scandir.3, scanf.3, sched_getcpu.3, seekdir.3, sem_wait.3, setbuf.3, setenv.3, setjmp.3, setnetgrent.3, siginterrupt.3, signbit.3, significand.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sockatmark.3, sqrt.3, stpcpy.3, stpncpy.3, strdup.3, strerror.3, strfromd.3, strnlen.3, strsep.3, strsignal.3, strtod.3, strtok.3, strtol.3, strtoul.3, syslog.3, tan.3, tanh.3, telldir.3, tempnam.3, termios.3, tgamma.3, timegm.3, timeradd.3, tmpnam.3, toascii.3, toupper.3, towlower.3, towupper.3, trunc.3, ttyslot.3, tzset.3, ualarm.3, unlocked_stdio.3, unlockpt.3, uselocale.3, usleep.3, wcpcpy.3, wcpncpy.3, wcscasecmp.3, wcsdup.3, wcsncasecmp.3, wcsnlen.3, wcsnrtombs.3, wordexp.3, wprintf.3, y0.3: srcfix: use better macros in SYNOPSIS
Around the text:
"Feature Test Macro Requirements for glibc..."
replace ".in -4n/.in" with ".RS -4/.RE".
The latter form is more idiomatic use of man macros.
The nroff output is unchanged.
Reported-by: G. Branden Robinson <g.branden.robinson@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-09-29 13:06:31 +00:00
|
|
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.RE
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_exit.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, create_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, exit_group.2, fanotify_mark.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpid.2, getpriority.2, getrandom.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, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, ioctl.2, ioctl_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_getfsmap.2, ioctl_tty.2, ioperm.2, iopl.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, pause.2, pciconfig_read.2, perf_event_open.2, perfmonctl.2, personality.2, pkey_alloc.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, read.2, readahead.2, readdir.2, readv.2, reboot.2, recv.2, remap_file_pages.2, removexattr.2, rename.2, request_key.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, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, set_mempolicy.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, setup.2, setxattr.2, sgetmask.2, shmctl.2, shmget.2, shutdown.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, stat.2, statfs.2, stime.2, swapon.2, symlink.2, sync.2, sysctl.2, sysinfo.2, syslog.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, uname.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, __ppc_get_timebase.3, __ppc_set_ppr_med.3, __ppc_yield.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_init.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, basename.3, bcmp.3, bcopy.3, bsd_signal.3, bsearch.3, bstring.3, btowc.3, byteorder.3, cabs.3, cacos.3, cacosh.3, canonicalize_file_name.3, carg.3, casin.3, casinh.3, catan.3, catanh.3, catopen.3, cbrt.3, ccos.3, ccosh.3, ceil.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, difftime.3, dirfd.3, div.3, dlerror.3, dlopen.3, dlsym.3, drand48.3, drand48_r.3, duplocale.3, dysize.3, ecvt.3, ecvt_r.3, encrypt.3, endian.3, erf.3, erfc.3, err.3, errno.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, fgetc.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, get_nprocs_conf.3, get_phys_pages.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getentropy.3, getenv.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.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_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getsubopt.3, getttyent.3, getumask.3, getusershell.3, getutent.3, getw.3, getwchar.3, glob.3, grantpt.3, group_member.3, gsignal.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_net_pton.3, inet_ntop.3, infnan.3, initgroups.3, insque.3, isalpha.3, isatty.3, isfdtype.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, killpg.3, ldexp.3, lgamma.3, localeconv.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, malloc.3, malloc_get_state.3, malloc_hook.3, malloc_info.3, matherr.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, mempcpy.3, memset.3, mkdtemp.3, mkfifo.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, newlocale.3, nextafter.3, nl_langinfo.3, offsetof.3, on_exit.3, open_memstream.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_madvise.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, printf.3, profil.3, psignal.3, pthread_atfork.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_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_rwlockattr_setkind_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, ptsname.3, putenv.3, putgrent.3, putpwent.3, puts.3, putwchar.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, remainder.3, remove.3, remquo.3, resolver.3, rewinddir.3, rexec.3, rint.3, round.3, rpmatch.3, rtime.3, rtnetlink.3, scalb.3, scalbln.3, scandir.3, scanf.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, setaliasent.3, setbuf.3, setenv.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, siginterrupt.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigvec.3, sigwait.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.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, strfromd.3, strfry.3, strftime.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, uselocale.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, y0.3, dsp56k.4, random.4, rtc.4, st.4, ddp.7, ip.7, ipv6.7, packet.7, rtnetlink.7, socket.7, tcp.7, udp.7, udplite.7, x25.7: ffix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-15 15:16:29 +00:00
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.PP
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2008-08-29 15:50:13 +00:00
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.BR sigaction ():
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2021-01-04 22:18:08 +00:00
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.nf
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_POSIX_C_SOURCE
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.fi
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_syscall.2, clock_getres.2, clone.2, copy_file_range.2, create_module.2, delete_module.2, fallocate.2, futex.2, get_kernel_syms.2, get_robust_list.2, getcpu.2, getdents.2, gettid.2, gettimeofday.2, getunwind.2, init_module.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl_userfaultfd.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, link.2, llseek.2, memfd_create.2, mmap.2, mq_getsetattr.2, msgctl.2, msgget.2, open_by_handle_at.2, outb.2, perf_event_open.2, pivot_root.2, process_vm_readv.2, query_module.2, readdir.2, recvmmsg.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_setattr.2, seccomp.2, select.2, select_tut.2, send.2, sendmmsg.2, set_thread_area.2, set_tid_address.2, sgetmask.2, shmop.2, sigaction.2, sigprocmask.2, splice.2, spu_create.2, spu_run.2, statx.2, subpage_prot.2, sync_file_range.2, syscall.2, sysctl.2, sysfs.2, tee.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, tkill.2, uselib.2, utimensat.2, vmsplice.2, wait.2, aio_init.3, asinh.3, atan2.3, atanh.3, backtrace.3, basename.3, bswap.3, bzero.3, catgets.3, catopen.3, dladdr.3, dlsym.3, endian.3, envz_add.3, erf.3, erfc.3, error.3, ferror.3, ffs.3, fgetc.3, fmemopen.3, fopen.3, fopencookie.3, fseek.3, ftw.3, futimes.3, getdate.3, getenv.3, getline.3, getlogin.3, getrpcent.3, getsubopt.3, getutmp.3, getw.3, gnu_get_libc_version.3, inet_net_pton.3, isalpha.3, lio_listio.3, makedev.3, malloc_get_state.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, matherr.3, memchr.3, nextup.3, ntp_gettime.3, posix_madvise.3, program_invocation_name.3, pthread_atfork.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_cleanup_push_defer_np.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_rwlockattr_setkind_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setschedprio.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, puts.3, random.3, random_r.3, rpc.3, sched_getcpu.3, setnetgrent.3, sigwait.3, stdin.3, strerror.3, strfmon.3, timeradd.3, tmpnam.3, toupper.3, towlower.3, towupper.3, ttyname.3, uselocale.3, xdr.3, dsp56k.4, sigevent.7, vdso.7: ffix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-15 17:26:11 +00:00
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.PP
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2013-01-22 22:37:21 +00:00
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.IR siginfo_t :
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2021-01-04 22:18:08 +00:00
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.nf
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_POSIX_C_SOURCE >= 199309L
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.fi
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2004-11-03 13:51:07 +00:00
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.SH DESCRIPTION
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The
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2004-11-18 13:37:14 +00:00
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.BR sigaction ()
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2004-11-03 13:51:07 +00:00
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system call is used to change the action taken by a process on
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receipt of a specific signal.
|
2008-10-04 06:01:49 +00:00
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(See
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.BR signal (7)
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|
for an overview of signals.)
|
2004-11-03 13:51:07 +00:00
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.PP
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.I signum
|
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specifies the signal and can be any valid signal except
|
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.B SIGKILL
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and
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.BR SIGSTOP .
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.PP
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If
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.I act
|
2010-01-16 17:25:31 +00:00
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is non-NULL, the new action for signal
|
2004-11-03 13:51:07 +00:00
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.I signum
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|
is installed from
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.IR act .
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If
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|
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.I oldact
|
2010-01-16 17:25:31 +00:00
|
|
|
is non-NULL, the previous action is saved in
|
2004-11-03 13:51:07 +00:00
|
|
|
.IR oldact .
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.PP
|
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The
|
2004-11-18 13:37:14 +00:00
|
|
|
.I sigaction
|
2008-07-07 09:17:21 +00:00
|
|
|
structure is defined as something like:
|
capget.2, gettimeofday.2, nanosleep.2, process_vm_readv.2, readv.2, seccomp.2, semop.2, sigaction.2, sigwaitinfo.2, dbopen.3, dladdr.3, ether_aton.3, fenv.3, fgetgrent.3, fgetpwent.3, frexp.3, ftime.3, gamma.3, getaddrinfo.3, getaddrinfo_a.3, getgrent_r.3, getgrnam.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnetent.3, getprotoent.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getservent.3, getspnam.3, getutent.3, glob.3, hsearch.3, if_nameindex.3, inet.3, mq_receive.3, putgrent.3, putpwent.3, rand.3, sigqueue.3, strfromd.3, strptime.3, strtol.3, termios.3, timeradd.3, lp.4, tty.4, ip.7, ipv6.7, netdevice.7, raw.7, rtnetlink.7, units.7, zic.8: ffix: replace .sp by .PP
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-17 23:00:48 +00:00
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|
|
.PP
|
2007-12-19 06:16:04 +00:00
|
|
|
.in +4n
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EX
|
2004-11-03 13:51:07 +00:00
|
|
|
struct sigaction {
|
2007-04-03 14:04:54 +00:00
|
|
|
void (*sa_handler)(int);
|
|
|
|
void (*sa_sigaction)(int, siginfo_t *, void *);
|
|
|
|
sigset_t sa_mask;
|
|
|
|
int sa_flags;
|
|
|
|
void (*sa_restorer)(void);
|
2007-12-23 22:20:35 +00:00
|
|
|
};
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
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.EE
|
2007-12-19 06:16:04 +00:00
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|
.in
|
2004-11-03 13:51:07 +00:00
|
|
|
.PP
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2005-07-06 06:54:27 +00:00
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|
|
On some architectures a union is involved: do not assign to both
|
2004-11-03 13:51:07 +00:00
|
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|
.I sa_handler
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and
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.IR sa_sigaction .
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.PP
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The
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.I sa_restorer
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2014-12-05 04:34:06 +00:00
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field is not intended for application use.
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(POSIX does not specify a
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2004-11-03 13:51:07 +00:00
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.I sa_restorer
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2014-12-05 05:07:01 +00:00
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field.)
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2017-10-08 12:37:17 +00:00
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|
Some further details of the purpose of this field can be found in
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2014-12-05 04:34:06 +00:00
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.BR sigreturn (2).
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2004-11-03 13:51:07 +00:00
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.PP
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.I sa_handler
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specifies the action to be associated with
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.I signum
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2020-11-14 06:56:07 +00:00
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and is be one of the following:
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|
|
.IP * 2
|
2004-11-03 13:51:07 +00:00
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|
.B SIG_DFL
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2020-11-14 06:56:07 +00:00
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for the default action.
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|
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.IP *
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2004-11-03 13:51:07 +00:00
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.B SIG_IGN
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2020-11-14 06:56:07 +00:00
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to ignore this signal.
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|
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.IP *
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A pointer to a signal handling function.
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2004-11-03 13:51:07 +00:00
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This function receives the signal number as its only argument.
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.PP
|
2005-09-15 11:47:39 +00:00
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If
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.B SA_SIGINFO
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|
|
|
is specified in
|
2007-04-12 22:42:49 +00:00
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.IR sa_flags ,
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2005-09-15 11:47:39 +00:00
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then
|
2004-11-03 13:51:07 +00:00
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.I sa_sigaction
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2005-09-15 11:47:39 +00:00
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(instead of
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.IR sa_handler )
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|
|
|
specifies the signal-handling function for
|
2004-11-03 13:51:07 +00:00
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.IR signum .
|
2017-10-08 08:49:36 +00:00
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This function receives three arguments, as described below.
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2004-11-03 13:51:07 +00:00
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.PP
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.I sa_mask
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2008-10-18 09:12:35 +00:00
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specifies a mask of signals which should be blocked
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|
|
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(i.e., added to the signal mask of the thread in which
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the signal handler is invoked)
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during execution of the signal handler.
|
2007-04-12 22:42:49 +00:00
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In addition, the signal which triggered the handler
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2004-11-03 13:51:07 +00:00
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will be blocked, unless the
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.B SA_NODEFER
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2004-11-18 13:37:14 +00:00
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|
flag is used.
|
2004-11-03 13:51:07 +00:00
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.PP
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|
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.I sa_flags
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2008-07-04 11:26:27 +00:00
|
|
|
specifies a set of flags which modify the behavior of the signal.
|
2007-04-12 22:42:49 +00:00
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|
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It is formed by the bitwise OR of zero or more of the following:
|
2004-11-03 13:51:07 +00:00
|
|
|
.TP
|
|
|
|
.B SA_NOCLDSTOP
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|
|
|
If
|
|
|
|
.I signum
|
|
|
|
is
|
2004-11-11 14:09:54 +00:00
|
|
|
.BR SIGCHLD ,
|
|
|
|
do not receive notification when child processes stop (i.e., when they
|
|
|
|
receive one of
|
2020-06-12 03:23:23 +00:00
|
|
|
.BR SIGSTOP ", " SIGTSTP ", " SIGTTIN ,
|
2004-11-03 13:51:07 +00:00
|
|
|
or
|
2004-11-11 14:09:54 +00:00
|
|
|
.BR SIGTTOU )
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or resume (i.e., they receive
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|
|
|
.BR SIGCONT )
|
|
|
|
(see
|
|
|
|
.BR wait (2)).
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
|
|
|
This flag is meaningful only when establishing a handler for
|
2008-07-04 11:26:27 +00:00
|
|
|
.BR SIGCHLD .
|
2004-11-03 13:51:07 +00:00
|
|
|
.TP
|
2010-06-11 04:57:50 +00:00
|
|
|
.BR SA_NOCLDWAIT " (since Linux 2.6)"
|
2004-11-11 14:09:54 +00:00
|
|
|
.\" To be precise: Linux 2.5.60 -- MTK
|
|
|
|
If
|
|
|
|
.I signum
|
|
|
|
is
|
|
|
|
.BR SIGCHLD ,
|
|
|
|
do not transform children into zombies when they terminate.
|
|
|
|
See also
|
2004-11-18 13:37:14 +00:00
|
|
|
.BR waitpid (2).
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
|
|
|
This flag is meaningful only when establishing a handler for
|
2008-07-04 11:26:27 +00:00
|
|
|
.BR SIGCHLD ,
|
|
|
|
or when setting that signal's disposition to
|
|
|
|
.BR SIG_DFL .
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.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_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.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_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.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, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
|
|
|
.IP
|
2008-07-04 11:26:27 +00:00
|
|
|
If the
|
|
|
|
.B SA_NOCLDWAIT
|
|
|
|
flag is set when establishing a handler for
|
|
|
|
.BR SIGCHLD ,
|
|
|
|
POSIX.1 leaves it unspecified whether a
|
|
|
|
.B SIGCHLD
|
|
|
|
signal is generated when a child process terminates.
|
|
|
|
On Linux, a
|
|
|
|
.B SIGCHLD
|
|
|
|
signal is generated in this case;
|
|
|
|
on some other implementations, it is not.
|
2004-11-11 14:09:54 +00:00
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.TP
|
2008-07-07 09:17:21 +00:00
|
|
|
.B SA_NODEFER
|
2020-11-14 06:48:58 +00:00
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|
|
Do not add the signal to the thread's signal mask while the
|
|
|
|
handler is executing, unless the signal is specified in
|
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.IR act.sa_mask .
|
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Consequently, a further instance of the signal may be delivered
|
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to the thread while it is executing the handler.
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
|
|
|
This flag is meaningful only when establishing a signal handler.
|
2020-11-14 06:39:08 +00:00
|
|
|
.IP
|
2008-07-07 09:17:21 +00:00
|
|
|
.B SA_NOMASK
|
accept.2, execve.2, futimesat.2, getresuid.2, getrlimit.2, madvise.2, mq_getsetattr.2, msgctl.2, nice.2, open.2, poll.2, setresuid.2, shmctl.2, sigaction.2, times.2, utimensat.2, __setfpucw.3, atoi.3, endian.3, err.3, euidaccess.3, fenv.3, fopencookie.3, fpurge.3, getgrouplist.3, getutmp.3, j0.3, lgamma.3, netlink.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_cleanup_push_defer_np.3, pthread_getattr_np.3, pthread_kill_other_threads_np.3, pthread_setaffinity_np.3, pthread_tryjoin_np.3, pthread_yield.3, random_r.3, readdir.3, rtnetlink.3, scanf.3, setenv.3, significand.3, sigsetops.3, strerror.3, strstr.3, sysv_signal.3, termios.3, timegm.3, unlocked_stdio.3, y0.3, locale.5, bootparam.7, feature_test_macros.7, ip.7, locale.7, pthreads.7, rtld-audit.7, nscd.8: Global fix: s/non-standard/nonstandard/
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 16:37:52 +00:00
|
|
|
is an obsolete, nonstandard synonym for this flag.
|
2004-11-03 13:51:07 +00:00
|
|
|
.TP
|
2007-09-20 16:26:31 +00:00
|
|
|
.B SA_ONSTACK
|
2007-04-12 22:42:49 +00:00
|
|
|
Call the signal handler on an alternate signal stack provided by
|
2004-11-03 13:51:07 +00:00
|
|
|
.BR sigaltstack (2).
|
|
|
|
If an alternate stack is not available, the default stack will be used.
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
|
|
|
This flag is meaningful only when establishing a signal handler.
|
2004-11-03 13:51:07 +00:00
|
|
|
.TP
|
2008-07-07 09:17:21 +00:00
|
|
|
.BR SA_RESETHAND
|
2012-09-23 04:31:00 +00:00
|
|
|
Restore the signal action to the default upon entry to the signal handler.
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
|
|
|
This flag is meaningful only when establishing a signal handler.
|
2020-11-14 06:39:08 +00:00
|
|
|
.IP
|
2008-07-07 09:17:21 +00:00
|
|
|
.B SA_ONESHOT
|
accept.2, execve.2, futimesat.2, getresuid.2, getrlimit.2, madvise.2, mq_getsetattr.2, msgctl.2, nice.2, open.2, poll.2, setresuid.2, shmctl.2, sigaction.2, times.2, utimensat.2, __setfpucw.3, atoi.3, endian.3, err.3, euidaccess.3, fenv.3, fopencookie.3, fpurge.3, getgrouplist.3, getutmp.3, j0.3, lgamma.3, netlink.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_cleanup_push_defer_np.3, pthread_getattr_np.3, pthread_kill_other_threads_np.3, pthread_setaffinity_np.3, pthread_tryjoin_np.3, pthread_yield.3, random_r.3, readdir.3, rtnetlink.3, scanf.3, setenv.3, significand.3, sigsetops.3, strerror.3, strstr.3, sysv_signal.3, termios.3, timegm.3, unlocked_stdio.3, y0.3, locale.5, bootparam.7, feature_test_macros.7, ip.7, locale.7, pthreads.7, rtld-audit.7, nscd.8: Global fix: s/non-standard/nonstandard/
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 16:37:52 +00:00
|
|
|
is an obsolete, nonstandard synonym for this flag.
|
2008-07-07 09:17:21 +00:00
|
|
|
.TP
|
2004-11-03 13:51:07 +00:00
|
|
|
.B SA_RESTART
|
2007-06-08 09:56:56 +00:00
|
|
|
Provide behavior compatible with BSD signal semantics by making certain
|
2004-11-03 13:51:07 +00:00
|
|
|
system calls restartable across signals.
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
|
|
|
This flag is meaningful only when establishing a signal handler.
|
2008-07-04 11:26:27 +00:00
|
|
|
See
|
|
|
|
.BR signal (7)
|
|
|
|
for a discussion of system call restarting.
|
2004-11-03 13:51:07 +00:00
|
|
|
.TP
|
2014-12-05 05:06:37 +00:00
|
|
|
.BR SA_RESTORER
|
|
|
|
.IR "Not intended for application use" .
|
|
|
|
This flag is used by C libraries to indicate that the
|
|
|
|
.IR sa_restorer
|
|
|
|
field contains the address of a "signal trampoline".
|
|
|
|
See
|
|
|
|
.BR sigreturn (2)
|
|
|
|
for more details.
|
|
|
|
.TP
|
2008-07-04 11:26:27 +00:00
|
|
|
.BR SA_SIGINFO " (since Linux 2.2)"
|
2012-09-23 04:32:05 +00:00
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The signal handler takes three arguments, not one.
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2007-04-12 22:42:49 +00:00
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In this case,
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2004-11-03 13:51:07 +00:00
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.I sa_sigaction
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should be set instead of
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.IR sa_handler .
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
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This flag is meaningful only when establishing a signal handler.
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2008-07-04 11:26:27 +00:00
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.\" (The
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.\" .I sa_sigaction
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.\" field was added in Linux 2.1.86.)
|
2020-02-20 11:43:20 +00:00
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.\"
|
2021-08-08 08:41:12 +00:00
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.TP
|
2021-08-11 01:31:52 +00:00
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|
.BR SA_UNSUPPORTED " (since Linux 5.11)"
|
2021-08-08 08:41:12 +00:00
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Used to dynamically probe for flag bit support.
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.IP
|
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If an attempt to register a handler succeeds with this flag set in
|
2021-08-09 00:26:50 +00:00
|
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|
.I act\->sa_flags
|
2021-08-08 08:41:12 +00:00
|
|
|
alongside other flags that are potentially unsupported by the kernel,
|
|
|
|
and an immediately subsequent
|
|
|
|
.BR sigaction ()
|
2021-08-09 00:26:50 +00:00
|
|
|
call specifying the same signal number and with a non-NULL
|
2021-08-08 08:41:12 +00:00
|
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|
.I oldact
|
2021-08-09 00:26:50 +00:00
|
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|
argument yields
|
2021-08-08 08:41:12 +00:00
|
|
|
.B SA_UNSUPPORTED
|
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|
.I clear
|
|
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|
in
|
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|
.IR oldact->sa_flags ,
|
|
|
|
then
|
|
|
|
.I oldact->sa_flags
|
|
|
|
may be used as a bitmask
|
|
|
|
describing which of the potentially unsupported flags are,
|
|
|
|
in fact, supported.
|
|
|
|
See the section "Dynamically probing for flag bit support"
|
|
|
|
below for more details.
|
|
|
|
.TP
|
|
|
|
.BR SA_EXPOSE_TAGBITS " (since Linux 5.11)"
|
|
|
|
Normally, when delivering a signal,
|
|
|
|
an architecture-specific set of tag bits are cleared from the
|
|
|
|
.I si_addr
|
|
|
|
field of
|
|
|
|
.IR siginfo_t .
|
|
|
|
If this flag is set,
|
|
|
|
an architecture-specific subset of the tag bits will be preserved in
|
|
|
|
.IR si_addr .
|
|
|
|
.IP
|
|
|
|
Programs that need to be compatible with Linux versions older than 5.11
|
|
|
|
must use
|
|
|
|
.B SA_UNSUPPORTED
|
|
|
|
to probe for support.
|
2017-03-30 12:18:05 +00:00
|
|
|
.SS The siginfo_t argument to a SA_SIGINFO handler
|
|
|
|
When the
|
|
|
|
.B SA_SIGINFO
|
|
|
|
flag is specified in
|
|
|
|
.IR act.sa_flags ,
|
|
|
|
the signal handler address is passed via the
|
|
|
|
.IR act.sa_sigaction
|
|
|
|
field.
|
|
|
|
This handler takes three arguments, as follows:
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.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_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.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_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.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, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
|
|
|
.PP
|
2017-03-30 12:18:05 +00:00
|
|
|
.in +4n
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EX
|
2017-03-30 12:18:05 +00:00
|
|
|
void
|
|
|
|
handler(int sig, siginfo_t *info, void *ucontext)
|
|
|
|
{
|
|
|
|
...
|
|
|
|
}
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EE
|
ioctl_console.2, ioctl_getfsmap.2, ioctl_iflags.2, ioctl_list.2, ioctl_ns.2, kcmp.2, kexec_load.2, keyctl.2, link.2, mmap.2, modify_ldt.2, msgctl.2, poll.2, query_module.2, quotactl.2, recv.2, recvmmsg.2, sched_setscheduler.2, seccomp.2, select.2, semctl.2, semop.2, send.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sysinfo.2, timer_create.2, timerfd_create.2, uname.2, unshare.2, userfaultfd.2, ustat.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, backtrace.3, bswap.3, btree.3, clock_getcpuclockid.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dlinfo.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, fmemopen.3, fopencookie.3, frexp.3, fts.3, ftw.3, getaddrinfo.3, getaddrinfo_a.3, getcontext.3, getgrouplist.3, getifaddrs.3, getipnodebyname.3, getnameinfo.3, getopt.3, getprotoent_r.3, getpwent_r.3, getrpcent.3, getservent_r.3, getttyent.3, getumask.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, inet.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallopt.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mtrace.3, newlocale.3, ntp_gettime.3, offsetof.3, posix_openpt.3, printf.3, pthread_setname_np.3, pthread_setschedparam.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, sigvec.3, stdarg.3, strcat.3, strcpy.3, strftime.3, strtol.3, toupper.3, ttyslot.3, fuse.4, loop.4, st.4, elf.5, cgroup_namespaces.7, cgroups.7, feature_test_macros.7, inode.7, inotify.7, keyrings.7, man-pages.7, math_error.7, mount_namespaces.7, mq_overview.7, pthreads.7, sched.7, session-keyring.7, udplite.7, unix.7, vdso.7: Use consistent markup for code snippets
The preferred form is
.PP/.IP
.in +4n
.EX
<code>
.EE
.in
.PP/.IP
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:37:55 +00:00
|
|
|
.in
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.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_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.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_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.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, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
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.PP
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2017-10-08 08:49:36 +00:00
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These three arguments are as follows
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.TP
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.I sig
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The number of the signal that caused invocation of the handler.
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.TP
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.I info
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A pointer to a
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.IR siginfo_t ,
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which is a structure containing further information about the signal,
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as described below.
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.TP
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.I ucontext
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This is a pointer to a
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.I ucontext_t
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structure, cast to \fIvoid\ *\fP.
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The structure pointed to by this field contains
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signal context information that was saved
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on the user-space stack by the kernel; for details, see
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.BR sigreturn (2).
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Further information about the
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.IR ucontext_t
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structure can be found in
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2020-11-17 12:18:09 +00:00
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.BR getcontext (3)
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and
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.BR signal (7).
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2017-10-08 08:49:36 +00:00
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Commonly, the handler function doesn't make any use of the third argument.
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.PP
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2004-11-03 13:51:07 +00:00
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The
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.I siginfo_t
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2017-03-30 12:18:05 +00:00
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data type is a structure with the following fields:
|
capget.2, gettimeofday.2, nanosleep.2, process_vm_readv.2, readv.2, seccomp.2, semop.2, sigaction.2, sigwaitinfo.2, dbopen.3, dladdr.3, ether_aton.3, fenv.3, fgetgrent.3, fgetpwent.3, frexp.3, ftime.3, gamma.3, getaddrinfo.3, getaddrinfo_a.3, getgrent_r.3, getgrnam.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnetent.3, getprotoent.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getservent.3, getspnam.3, getutent.3, glob.3, hsearch.3, if_nameindex.3, inet.3, mq_receive.3, putgrent.3, putpwent.3, rand.3, sigqueue.3, strfromd.3, strptime.3, strtol.3, termios.3, timeradd.3, lp.4, tty.4, ip.7, ipv6.7, netdevice.7, raw.7, rtnetlink.7, units.7, zic.8: ffix: replace .sp by .PP
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-17 23:00:48 +00:00
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.PP
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2007-12-19 06:16:04 +00:00
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.in +4n
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
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.EX
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2004-11-03 13:51:07 +00:00
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siginfo_t {
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2014-12-30 08:26:12 +00:00
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int si_signo; /* Signal number */
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int si_errno; /* An errno value */
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int si_code; /* Signal code */
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int si_trapno; /* Trap number that caused
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2021-01-09 22:21:02 +00:00
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hardware\-generated signal
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2014-12-30 08:26:12 +00:00
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(unused on most architectures) */
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2008-07-07 09:17:21 +00:00
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.\" FIXME
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2016-10-29 11:00:56 +00:00
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.\" The siginfo_t 'si_trapno' field seems to be used
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.\" only on SPARC and Alpha; this page could use
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.\" a little more detail on its purpose there.
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2014-12-30 08:26:12 +00:00
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pid_t si_pid; /* Sending process ID */
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uid_t si_uid; /* Real user ID of sending process */
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int si_status; /* Exit value or signal */
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clock_t si_utime; /* User time consumed */
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clock_t si_stime; /* System time consumed */
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2020-09-16 14:26:12 +00:00
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union sigval si_value; /* Signal value */
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2014-12-30 08:26:12 +00:00
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int si_int; /* POSIX.1b signal */
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void *si_ptr; /* POSIX.1b signal */
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int si_overrun; /* Timer overrun count;
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POSIX.1b timers */
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int si_timerid; /* Timer ID; POSIX.1b timers */
|
2008-07-07 09:17:21 +00:00
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.\" In the kernel: si_tid
|
2014-12-30 08:26:12 +00:00
|
|
|
void *si_addr; /* Memory location which caused fault */
|
|
|
|
long si_band; /* Band event (was \fIint\fP in
|
|
|
|
glibc 2.3.2 and earlier) */
|
|
|
|
int si_fd; /* File descriptor */
|
|
|
|
short si_addr_lsb; /* Least significant bit of address
|
|
|
|
(since Linux 2.6.32) */
|
2016-03-28 04:54:33 +00:00
|
|
|
void *si_lower; /* Lower bound when address violation
|
|
|
|
occurred (since Linux 3.19) */
|
|
|
|
void *si_upper; /* Upper bound when address violation
|
|
|
|
occurred (since Linux 3.19) */
|
2016-03-28 06:05:16 +00:00
|
|
|
int si_pkey; /* Protection key on PTE that caused
|
|
|
|
fault (since Linux 4.6) */
|
2014-12-30 08:26:12 +00:00
|
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|
void *si_call_addr; /* Address of system call instruction
|
|
|
|
(since Linux 3.5) */
|
|
|
|
int si_syscall; /* Number of attempted system call
|
|
|
|
(since Linux 3.5) */
|
|
|
|
unsigned int si_arch; /* Architecture of attempted system call
|
|
|
|
(since Linux 3.5) */
|
2004-11-03 13:51:07 +00:00
|
|
|
}
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EE
|
2007-12-19 06:16:04 +00:00
|
|
|
.in
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.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_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.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_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.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, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
|
|
|
.PP
|
2004-11-03 13:51:07 +00:00
|
|
|
.IR si_signo ", " si_errno " and " si_code
|
|
|
|
are defined for all signals.
|
2007-07-14 03:08:42 +00:00
|
|
|
.RI ( si_errno
|
2008-07-07 09:17:21 +00:00
|
|
|
is generally unused on Linux.)
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
|
|
|
The rest of the struct may be a union, so that one should
|
|
|
|
read only the fields that are meaningful for the given signal:
|
2007-05-04 20:32:14 +00:00
|
|
|
.IP * 2
|
2010-06-11 04:57:50 +00:00
|
|
|
Signals sent with
|
|
|
|
.BR kill (2)
|
|
|
|
and
|
getrlimit.2, kill.2, rt_sigqueueinfo.2, sigaction.2, signal.2, signalfd.2, sigprocmask.2, sigwaitinfo.2, psignal.3, pthread_sigqueue.3, credentials.7, signal.7: Change reference to "sigqueue(2)" to "sigqueue(3)"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2011-09-18 04:27:57 +00:00
|
|
|
.BR sigqueue (3)
|
2004-11-18 13:37:14 +00:00
|
|
|
fill in
|
2004-11-03 13:51:07 +00:00
|
|
|
.IR si_pid " and " si_uid .
|
2010-06-16 03:23:18 +00:00
|
|
|
In addition, signals sent with
|
getrlimit.2, kill.2, rt_sigqueueinfo.2, sigaction.2, signal.2, signalfd.2, sigprocmask.2, sigwaitinfo.2, psignal.3, pthread_sigqueue.3, credentials.7, signal.7: Change reference to "sigqueue(2)" to "sigqueue(3)"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2011-09-18 04:27:57 +00:00
|
|
|
.BR sigqueue (3)
|
2010-06-16 03:23:18 +00:00
|
|
|
fill in
|
|
|
|
.IR si_int " and " si_ptr
|
2011-09-08 15:17:06 +00:00
|
|
|
with the values specified by the sender of the signal;
|
2010-06-16 03:23:18 +00:00
|
|
|
see
|
getrlimit.2, kill.2, rt_sigqueueinfo.2, sigaction.2, signal.2, signalfd.2, sigprocmask.2, sigwaitinfo.2, psignal.3, pthread_sigqueue.3, credentials.7, signal.7: Change reference to "sigqueue(2)" to "sigqueue(3)"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2011-09-18 04:27:57 +00:00
|
|
|
.BR sigqueue (3)
|
2010-06-16 03:23:18 +00:00
|
|
|
for more details.
|
2007-05-04 20:32:14 +00:00
|
|
|
.IP *
|
2010-06-16 04:09:46 +00:00
|
|
|
Signals sent by POSIX.1b timers (since Linux 2.6) fill in
|
2008-07-07 09:17:21 +00:00
|
|
|
.I si_overrun
|
|
|
|
and
|
|
|
|
.IR si_timerid .
|
|
|
|
The
|
|
|
|
.I si_timerid
|
|
|
|
field is an internal ID used by the kernel to identify
|
|
|
|
the timer; it is not the same as the timer ID returned by
|
clock_nanosleep.2, execve.2, fork.2, nanosleep.2, sigaction.2, timerfd_create.2, pthread_getcpuclockid.3, ualarm.3, usleep.3, pthreads.7, time.7: Global fix: s/(3)/(2)/ in section number xrefs for timer_*() API
The POSIX timers API is implemented (mostly) within the kernel,
so thse interfaces are system calls. Although there are as yet
no man pages, when they are added they should be in Section 2,
not 3. Therefore fix those pages that currently refer to these
interfaces as being in Section 3.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2009-02-07 20:21:03 +00:00
|
|
|
.BR timer_create (2).
|
2010-06-11 04:57:50 +00:00
|
|
|
The
|
|
|
|
.I si_overrun
|
|
|
|
field is the timer overrun count;
|
|
|
|
this is the same information as is obtained by a call to
|
|
|
|
.BR timer_getoverrun (2).
|
|
|
|
These fields are nonstandard Linux extensions.
|
2008-07-07 09:17:21 +00:00
|
|
|
.IP *
|
2010-06-16 04:21:59 +00:00
|
|
|
Signals sent for message queue notification (see the description of
|
|
|
|
.B SIGEV_SIGNAL
|
|
|
|
in
|
|
|
|
.BR mq_notify (3))
|
|
|
|
fill in
|
|
|
|
.IR si_int / si_ptr ,
|
|
|
|
with the
|
|
|
|
.I sigev_value
|
|
|
|
supplied to
|
|
|
|
.BR mq_notify (3);
|
|
|
|
.IR si_pid ,
|
|
|
|
with the process ID of the message sender; and
|
|
|
|
.IR si_uid ,
|
|
|
|
with the real user ID of the message sender.
|
|
|
|
.IP *
|
2004-11-18 13:37:14 +00:00
|
|
|
.B SIGCHLD
|
2008-07-07 09:17:21 +00:00
|
|
|
fills in
|
fcntl.2, msgget.2, ptrace.2, request_key.2, shmget.2, sigaction.2, syscalls.2, dbopen.3, euidaccess.3, getgrnam.3, getpwnam.3, strfmon.3, strtol.3, strtoul.3, cciss.4, hpsa.4, mouse.4, termcap.5, charsets.7, iso_8859-16.7, iso_8859-2.7, koi8-r.7, unicode.7, utf-8.7: Use Oxford comma
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2014-02-05 15:09:11 +00:00
|
|
|
.IR si_pid ", " si_uid ", " si_status ", " si_utime ", and " si_stime ,
|
2010-06-11 04:57:50 +00:00
|
|
|
providing information about the child.
|
|
|
|
The
|
|
|
|
.I si_pid
|
|
|
|
field is the process ID of the child;
|
|
|
|
.I si_uid
|
|
|
|
is the child's real user ID.
|
|
|
|
The
|
|
|
|
.I si_status
|
|
|
|
field contains the exit status of the child (if
|
|
|
|
.I si_code
|
|
|
|
is
|
|
|
|
.BR CLD_EXITED ),
|
|
|
|
or the signal number that caused the process to change state.
|
2009-06-09 04:01:59 +00:00
|
|
|
The
|
|
|
|
.I si_utime
|
|
|
|
and
|
|
|
|
.I si_stime
|
2010-06-11 04:57:50 +00:00
|
|
|
contain the user and system CPU time used by the child process;
|
|
|
|
these fields do not include the times used by waited-for children (unlike
|
2009-06-09 04:01:59 +00:00
|
|
|
.BR getrusage (2)
|
|
|
|
and
|
2014-04-26 20:47:45 +00:00
|
|
|
.BR times (2)).
|
2009-06-09 04:01:59 +00:00
|
|
|
In kernels up to 2.6, and since 2.6.27, these fields report
|
|
|
|
CPU time in units of
|
|
|
|
.IR sysconf(_SC_CLK_TCK) .
|
|
|
|
In 2.6 kernels before 2.6.27,
|
|
|
|
a bug meant that these fields reported time in units
|
|
|
|
of the (configurable) system jiffy (see
|
|
|
|
.BR time (7)).
|
2010-06-11 04:57:50 +00:00
|
|
|
.\" FIXME .
|
2008-06-30 08:59:04 +00:00
|
|
|
.\" When si_utime and si_stime where originally implemented, the
|
|
|
|
.\" measurement unit was HZ, which was the same as clock ticks
|
|
|
|
.\" (sysconf(_SC_CLK_TCK)). In 2.6, HZ became configurable, and
|
|
|
|
.\" was *still* used as the unit to return the info these fields,
|
2015-10-22 14:44:12 +00:00
|
|
|
.\" with the result that the field values depended on the
|
2008-06-30 08:59:04 +00:00
|
|
|
.\" configured HZ. Of course, the should have been measured in
|
2008-07-02 13:43:42 +00:00
|
|
|
.\" USER_HZ instead, so that sysconf(_SC_CLK_TCK) could be used to
|
2008-06-30 08:59:04 +00:00
|
|
|
.\" convert to seconds. I have a queued patch to fix this:
|
|
|
|
.\" http://thread.gmane.org/gmane.linux.kernel/698061/ .
|
2009-06-09 04:01:59 +00:00
|
|
|
.\" This patch made it into 2.6.27.
|
2008-06-30 08:59:04 +00:00
|
|
|
.\" But note that these fields still don't return the times of
|
2009-09-27 07:33:23 +00:00
|
|
|
.\" waited-for children (as is done by getrusage() and times()
|
2008-06-30 08:59:04 +00:00
|
|
|
.\" and wait4()). Solaris 8 does include child times.
|
2007-05-04 20:32:14 +00:00
|
|
|
.IP *
|
2007-04-12 22:42:49 +00:00
|
|
|
.BR SIGILL ,
|
2004-11-18 13:37:14 +00:00
|
|
|
.BR SIGFPE ,
|
2007-04-12 22:42:49 +00:00
|
|
|
.BR SIGSEGV ,
|
2010-06-16 03:54:21 +00:00
|
|
|
.BR SIGBUS ,
|
2004-11-18 13:37:14 +00:00
|
|
|
and
|
2010-06-16 03:54:21 +00:00
|
|
|
.BR SIGTRAP
|
2004-11-18 13:37:14 +00:00
|
|
|
fill in
|
2004-11-03 13:51:07 +00:00
|
|
|
.I si_addr
|
|
|
|
with the address of the fault.
|
2010-06-16 03:54:21 +00:00
|
|
|
On some architectures,
|
|
|
|
these signals also fill in the
|
|
|
|
.I si_trapno
|
2013-09-02 05:40:27 +00:00
|
|
|
field.
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.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_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.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_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.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, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
|
|
|
.IP
|
2010-06-11 02:42:10 +00:00
|
|
|
Some suberrors of
|
2010-06-11 04:57:50 +00:00
|
|
|
.BR SIGBUS ,
|
2010-06-11 02:42:10 +00:00
|
|
|
in particular
|
|
|
|
.B BUS_MCEERR_AO
|
|
|
|
and
|
|
|
|
.BR BUS_MCEERR_AR ,
|
|
|
|
also fill in
|
|
|
|
.IR si_addr_lsb .
|
|
|
|
This field indicates the least significant bit of the reported address
|
|
|
|
and therefore the extent of the corruption.
|
|
|
|
For example, if a full page was corrupted,
|
|
|
|
.I si_addr_lsb
|
2010-06-20 04:43:23 +00:00
|
|
|
contains
|
2010-06-11 02:42:10 +00:00
|
|
|
.IR log2(sysconf(_SC_PAGESIZE)) .
|
2015-01-18 06:26:17 +00:00
|
|
|
When
|
|
|
|
.BR SIGTRAP
|
|
|
|
is delivered in response to a
|
|
|
|
.BR ptrace (2)
|
|
|
|
event (PTRACE_EVENT_foo),
|
|
|
|
.I si_addr
|
|
|
|
is not populated, but
|
|
|
|
.I si_pid
|
|
|
|
and
|
|
|
|
.I si_uid
|
|
|
|
are populated with the respective process ID and user ID responsible for
|
2015-01-18 11:13:25 +00:00
|
|
|
delivering the trap.
|
|
|
|
In the case of
|
2015-01-18 11:16:55 +00:00
|
|
|
.BR seccomp (2),
|
2015-01-18 06:26:17 +00:00
|
|
|
the tracee will be shown as delivering the event.
|
2015-01-21 20:41:54 +00:00
|
|
|
.B BUS_MCEERR_*
|
2010-06-11 02:42:10 +00:00
|
|
|
and
|
|
|
|
.I si_addr_lsb
|
|
|
|
are Linux-specific extensions.
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.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_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.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_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.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, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
|
|
|
.IP
|
2016-03-28 04:54:33 +00:00
|
|
|
The
|
|
|
|
.BR SEGV_BNDERR
|
|
|
|
suberror of
|
|
|
|
.B SIGSEGV
|
|
|
|
populates
|
|
|
|
.IR si_lower
|
|
|
|
and
|
|
|
|
.IR si_upper .
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.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_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.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_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.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, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
|
|
|
.IP
|
2016-03-28 06:05:16 +00:00
|
|
|
The
|
|
|
|
.BR SEGV_PKUERR
|
|
|
|
suberror of
|
|
|
|
.B SIGSEGV
|
|
|
|
populates
|
|
|
|
.IR si_pkey .
|
2010-06-11 04:57:50 +00:00
|
|
|
.IP *
|
2012-04-11 23:47:43 +00:00
|
|
|
.BR SIGIO / SIGPOLL
|
|
|
|
(the two names are synonyms on Linux)
|
2004-11-18 13:37:14 +00:00
|
|
|
fills in
|
2004-11-03 13:51:07 +00:00
|
|
|
.IR si_band " and " si_fd .
|
2010-06-11 04:57:50 +00:00
|
|
|
The
|
|
|
|
.I si_band
|
|
|
|
event is a bit mask containing the same values as are filled in the
|
|
|
|
.I revents
|
|
|
|
field by
|
|
|
|
.BR poll (2).
|
|
|
|
The
|
|
|
|
.I si_fd
|
2015-05-04 11:05:18 +00:00
|
|
|
field indicates the file descriptor for which the I/O event occurred;
|
|
|
|
for further details, see the description of
|
2015-05-07 06:30:26 +00:00
|
|
|
.BR F_SETSIG
|
2015-05-04 11:05:18 +00:00
|
|
|
in
|
|
|
|
.BR fcntl (2).
|
2014-12-30 08:26:12 +00:00
|
|
|
.IP *
|
2015-01-21 20:41:54 +00:00
|
|
|
.BR SIGSYS ,
|
2015-01-18 11:20:59 +00:00
|
|
|
generated (since Linux 3.5)
|
2014-12-30 08:26:12 +00:00
|
|
|
.\" commit a0727e8ce513fe6890416da960181ceb10fbfae6
|
2015-01-18 11:20:59 +00:00
|
|
|
when a seccomp filter returns
|
|
|
|
.BR SECCOMP_RET_TRAP ,
|
2014-12-30 08:26:12 +00:00
|
|
|
fills in
|
|
|
|
.IR si_call_addr ,
|
|
|
|
.IR si_syscall ,
|
|
|
|
.IR si_arch ,
|
2015-01-18 06:26:17 +00:00
|
|
|
.IR si_errno ,
|
|
|
|
and other fields as described in
|
2014-12-30 08:26:12 +00:00
|
|
|
.BR seccomp (2).
|
2017-06-16 06:07:30 +00:00
|
|
|
.\"
|
|
|
|
.SS
|
|
|
|
The si_code field
|
|
|
|
The
|
2004-11-03 13:51:07 +00:00
|
|
|
.I si_code
|
2017-06-16 06:07:30 +00:00
|
|
|
field inside the
|
|
|
|
.I siginfo_t
|
|
|
|
argument that is passed to a
|
|
|
|
.B SA_SIGINFO
|
|
|
|
signal handler is a value (not a bit mask)
|
|
|
|
indicating why this signal was sent.
|
2015-01-18 11:13:25 +00:00
|
|
|
For a
|
2015-01-18 06:26:17 +00:00
|
|
|
.BR ptrace (2)
|
|
|
|
event,
|
|
|
|
.I si_code
|
|
|
|
will contain
|
|
|
|
.BR SIGTRAP
|
|
|
|
and have the ptrace event in the high byte:
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.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_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.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_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.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, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
|
|
|
.PP
|
intro.1, locale.1, ioctl_list.2, listxattr.2, memfd_create.2, nfsservctl.2, open_by_handle_at.2, perf_event_open.2, poll.2, process_vm_readv.2, ptrace.2, select.2, select_tut.2, semop.2, sendmmsg.2, shmget.2, sigaction.2, spu_run.2, umask.2, wait4.2, nan.3, setlocale.3, feature_test_macros.7, glob.7, posixoptions.7, rtld-audit.7: ffix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-19 10:56:40 +00:00
|
|
|
.in +4n
|
|
|
|
.EX
|
|
|
|
(SIGTRAP | PTRACE_EVENT_foo << 8).
|
|
|
|
.EE
|
|
|
|
.in
|
2017-06-16 06:23:18 +00:00
|
|
|
.PP
|
|
|
|
For a
|
|
|
|
.RB non- ptrace (2)
|
|
|
|
event, the values that can appear in
|
|
|
|
.I si_code
|
|
|
|
are described in the remainder of this section.
|
|
|
|
Since glibc 2.20,
|
|
|
|
the definitions of most of these symbols are obtained from
|
|
|
|
.I <signal.h>
|
|
|
|
by defining feature test macros (before including
|
|
|
|
.I any
|
|
|
|
header file) as follows:
|
|
|
|
.IP * 3
|
|
|
|
.B _XOPEN_SOURCE
|
|
|
|
with the value 500 or greater;
|
|
|
|
.IP *
|
|
|
|
.B _XOPEN_SOURCE
|
|
|
|
and
|
|
|
|
.BR _XOPEN_SOURCE_EXTENDED ;
|
|
|
|
or
|
|
|
|
.IP *
|
|
|
|
.B _POSIX_C_SOURCE
|
|
|
|
with the value 200809L or greater.
|
|
|
|
.PP
|
|
|
|
For the
|
|
|
|
.B TRAP_*
|
|
|
|
constants, the symbol definitions are provided only in the first two cases.
|
|
|
|
Before glibc 2.20, no feature test macros were required to obtain these symbols.
|
|
|
|
.PP
|
2015-01-18 06:26:17 +00:00
|
|
|
For a regular signal, the following list shows the values which can be
|
|
|
|
placed in
|
2007-06-29 17:32:54 +00:00
|
|
|
.I si_code
|
2017-06-16 06:09:24 +00:00
|
|
|
for any signal, along with the reason that the signal was generated.
|
2007-06-29 17:32:54 +00:00
|
|
|
.RS 4
|
2015-01-18 11:23:46 +00:00
|
|
|
.TP
|
2007-06-29 17:32:54 +00:00
|
|
|
.B SI_USER
|
2015-01-18 11:27:57 +00:00
|
|
|
.BR kill (2).
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B SI_KERNEL
|
|
|
|
Sent by the kernel.
|
|
|
|
.TP
|
|
|
|
.B SI_QUEUE
|
2015-01-18 11:27:57 +00:00
|
|
|
.BR sigqueue (3).
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B SI_TIMER
|
2015-01-18 11:27:57 +00:00
|
|
|
POSIX timer expired.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
2015-01-18 11:25:27 +00:00
|
|
|
.BR SI_MESGQ " (since Linux 2.6.6)"
|
|
|
|
POSIX message queue state changed; see
|
2015-01-18 11:27:57 +00:00
|
|
|
.BR mq_notify (3).
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B SI_ASYNCIO
|
2015-01-18 11:27:57 +00:00
|
|
|
AIO completed.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B SI_SIGIO
|
2012-04-11 23:47:43 +00:00
|
|
|
Queued
|
|
|
|
.B SIGIO
|
|
|
|
(only in kernels up to Linux 2.2; from Linux 2.4 onward
|
|
|
|
.BR SIGIO / SIGPOLL
|
|
|
|
fills in
|
|
|
|
.I si_code
|
|
|
|
as described below).
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
2015-01-18 11:25:27 +00:00
|
|
|
.BR SI_TKILL " (since Linux 2.4.19)"
|
2007-06-29 17:32:54 +00:00
|
|
|
.BR tkill (2)
|
|
|
|
or
|
2015-01-18 11:27:57 +00:00
|
|
|
.BR tgkill (2).
|
2006-02-08 09:44:13 +00:00
|
|
|
.\" SI_DETHREAD is defined in 2.6.9 sources, but isn't implemented
|
2007-04-12 22:42:49 +00:00
|
|
|
.\" It appears to have been an idea that was tried during 2.5.6
|
2006-02-08 09:44:13 +00:00
|
|
|
.\" through to 2.5.24 and then was backed out.
|
2007-06-29 17:32:54 +00:00
|
|
|
.RE
|
|
|
|
.PP
|
2007-10-16 19:18:17 +00:00
|
|
|
The following values can be placed in
|
2007-06-29 17:32:54 +00:00
|
|
|
.I si_code
|
|
|
|
for a
|
|
|
|
.B SIGILL
|
|
|
|
signal:
|
|
|
|
.RS 4
|
2015-01-18 11:23:46 +00:00
|
|
|
.TP
|
2007-06-29 17:32:54 +00:00
|
|
|
.B ILL_ILLOPC
|
2015-01-18 11:27:57 +00:00
|
|
|
Illegal opcode.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B ILL_ILLOPN
|
2015-01-18 11:27:57 +00:00
|
|
|
Illegal operand.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B ILL_ILLADR
|
2015-01-18 11:27:57 +00:00
|
|
|
Illegal addressing mode.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B ILL_ILLTRP
|
2015-01-18 11:27:57 +00:00
|
|
|
Illegal trap.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B ILL_PRVOPC
|
2015-01-18 11:27:57 +00:00
|
|
|
Privileged opcode.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B ILL_PRVREG
|
2015-01-18 11:27:57 +00:00
|
|
|
Privileged register.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B ILL_COPROC
|
2015-01-18 11:27:57 +00:00
|
|
|
Coprocessor error.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B ILL_BADSTK
|
2015-01-18 11:27:57 +00:00
|
|
|
Internal stack error.
|
2007-06-29 17:32:54 +00:00
|
|
|
.RE
|
|
|
|
.PP
|
2007-10-16 19:18:17 +00:00
|
|
|
The following values can be placed in
|
2007-06-29 17:32:54 +00:00
|
|
|
.I si_code
|
|
|
|
for a
|
|
|
|
.B SIGFPE
|
|
|
|
signal:
|
|
|
|
.RS 4
|
2015-01-18 11:23:46 +00:00
|
|
|
.TP
|
2007-06-29 17:32:54 +00:00
|
|
|
.B FPE_INTDIV
|
2015-01-18 11:27:57 +00:00
|
|
|
Integer divide by zero.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B FPE_INTOVF
|
2015-01-18 11:27:57 +00:00
|
|
|
Integer overflow.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B FPE_FLTDIV
|
2015-01-18 11:27:57 +00:00
|
|
|
Floating-point divide by zero.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B FPE_FLTOVF
|
2015-01-18 11:27:57 +00:00
|
|
|
Floating-point overflow.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B FPE_FLTUND
|
2015-01-18 11:27:57 +00:00
|
|
|
Floating-point underflow.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B FPE_FLTRES
|
2015-01-18 11:27:57 +00:00
|
|
|
Floating-point inexact result.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B FPE_FLTINV
|
2015-01-18 11:27:57 +00:00
|
|
|
Floating-point invalid operation.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B FPE_FLTSUB
|
2015-01-18 11:27:57 +00:00
|
|
|
Subscript out of range.
|
2007-06-29 17:32:54 +00:00
|
|
|
.RE
|
|
|
|
.PP
|
2007-10-16 19:18:17 +00:00
|
|
|
The following values can be placed in
|
2007-06-29 17:32:54 +00:00
|
|
|
.I si_code
|
|
|
|
for a
|
|
|
|
.B SIGSEGV
|
|
|
|
signal:
|
|
|
|
.RS 4
|
2015-01-18 11:23:46 +00:00
|
|
|
.TP
|
2007-06-29 17:32:54 +00:00
|
|
|
.B SEGV_MAPERR
|
2015-01-18 11:27:57 +00:00
|
|
|
Address not mapped to object.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B SEGV_ACCERR
|
2015-01-18 11:27:57 +00:00
|
|
|
Invalid permissions for mapped object.
|
2016-03-28 04:54:33 +00:00
|
|
|
.TP
|
|
|
|
.BR SEGV_BNDERR " (since Linux 3.19)"
|
|
|
|
.\" commit ee1b58d36aa1b5a79eaba11f5c3633c88231da83
|
|
|
|
Failed address bound checks.
|
2016-03-28 06:05:16 +00:00
|
|
|
.TP
|
|
|
|
.BR SEGV_PKUERR " (since Linux 4.6)"
|
|
|
|
.\" commit cd0ea35ff5511cde299a61c21a95889b4a71464e
|
2016-10-13 08:46:47 +00:00
|
|
|
Access was denied by memory protection keys.
|
|
|
|
See
|
|
|
|
.BR pkeys (7).
|
|
|
|
The protection key which applied to this access is available via
|
|
|
|
.IR si_pkey .
|
2007-06-29 17:32:54 +00:00
|
|
|
.RE
|
|
|
|
.PP
|
2007-10-16 19:18:17 +00:00
|
|
|
The following values can be placed in
|
2007-06-29 17:32:54 +00:00
|
|
|
.I si_code
|
|
|
|
for a
|
|
|
|
.B SIGBUS
|
|
|
|
signal:
|
|
|
|
.RS 4
|
2015-01-18 11:23:46 +00:00
|
|
|
.TP
|
2007-06-29 17:32:54 +00:00
|
|
|
.B BUS_ADRALN
|
2015-01-18 11:27:57 +00:00
|
|
|
Invalid address alignment.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B BUS_ADRERR
|
2015-01-18 11:27:57 +00:00
|
|
|
Nonexistent physical address.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B BUS_OBJERR
|
2015-01-18 11:27:57 +00:00
|
|
|
Object-specific hardware error.
|
2010-06-11 02:42:10 +00:00
|
|
|
.TP
|
|
|
|
.BR BUS_MCEERR_AR " (since Linux 2.6.32)"
|
|
|
|
Hardware memory error consumed on a machine check; action required.
|
|
|
|
.TP
|
|
|
|
.BR BUS_MCEERR_AO " (since Linux 2.6.32)"
|
|
|
|
Hardware memory error detected in process but not consumed; action optional.
|
2007-06-29 17:32:54 +00:00
|
|
|
.RE
|
|
|
|
.PP
|
2007-10-16 19:18:17 +00:00
|
|
|
The following values can be placed in
|
2007-06-29 17:32:54 +00:00
|
|
|
.I si_code
|
|
|
|
for a
|
|
|
|
.B SIGTRAP
|
|
|
|
signal:
|
|
|
|
.RS 4
|
2015-01-18 11:23:46 +00:00
|
|
|
.TP
|
2007-06-29 17:32:54 +00:00
|
|
|
.B TRAP_BRKPT
|
2015-01-18 11:27:57 +00:00
|
|
|
Process breakpoint.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B TRAP_TRACE
|
2015-01-18 11:27:57 +00:00
|
|
|
Process trace trap.
|
2010-06-16 03:36:01 +00:00
|
|
|
.TP
|
2020-11-14 09:12:54 +00:00
|
|
|
.BR TRAP_BRANCH " (since Linux 2.4, IA64 only)"
|
2015-01-18 11:27:57 +00:00
|
|
|
Process taken branch trap.
|
2010-06-16 03:36:01 +00:00
|
|
|
.TP
|
2020-11-14 09:12:54 +00:00
|
|
|
.BR TRAP_HWBKPT " (since Linux 2.4, IA64 only)"
|
2015-01-18 11:27:57 +00:00
|
|
|
Hardware breakpoint/watchpoint.
|
2007-06-29 17:32:54 +00:00
|
|
|
.RE
|
|
|
|
.PP
|
2007-10-16 19:18:17 +00:00
|
|
|
The following values can be placed in
|
2007-06-29 17:32:54 +00:00
|
|
|
.I si_code
|
|
|
|
for a
|
2007-08-27 08:06:54 +00:00
|
|
|
.B SIGCHLD
|
2007-06-29 17:32:54 +00:00
|
|
|
signal:
|
|
|
|
.RS 4
|
2015-01-18 11:23:46 +00:00
|
|
|
.TP
|
2007-06-29 17:32:54 +00:00
|
|
|
.B CLD_EXITED
|
2015-01-18 11:27:57 +00:00
|
|
|
Child has exited.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B CLD_KILLED
|
2015-01-18 11:27:57 +00:00
|
|
|
Child was killed.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B CLD_DUMPED
|
2015-01-18 11:27:57 +00:00
|
|
|
Child terminated abnormally.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B CLD_TRAPPED
|
2015-01-18 11:27:57 +00:00
|
|
|
Traced child has trapped.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B CLD_STOPPED
|
2015-01-18 11:27:57 +00:00
|
|
|
Child has stopped.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
2015-01-18 11:25:27 +00:00
|
|
|
.BR CLD_CONTINUED " (since Linux 2.6.9)"
|
2015-01-18 11:27:57 +00:00
|
|
|
Stopped child has continued.
|
2007-06-29 17:32:54 +00:00
|
|
|
.RE
|
|
|
|
.PP
|
2007-10-16 19:18:17 +00:00
|
|
|
The following values can be placed in
|
2007-06-29 17:32:54 +00:00
|
|
|
.I si_code
|
|
|
|
for a
|
2012-04-11 23:47:43 +00:00
|
|
|
.BR SIGIO / SIGPOLL
|
2007-06-29 17:32:54 +00:00
|
|
|
signal:
|
|
|
|
.RS 4
|
2015-01-18 11:23:46 +00:00
|
|
|
.TP
|
2007-06-29 17:32:54 +00:00
|
|
|
.B POLL_IN
|
2015-01-18 11:27:57 +00:00
|
|
|
Data input available.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B POLL_OUT
|
2015-01-18 11:27:57 +00:00
|
|
|
Output buffers available.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B POLL_MSG
|
2015-01-18 11:27:57 +00:00
|
|
|
Input message available.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B POLL_ERR
|
2015-01-18 11:27:57 +00:00
|
|
|
I/O error.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B POLL_PRI
|
2015-01-18 11:27:57 +00:00
|
|
|
High priority input available.
|
2007-06-29 17:32:54 +00:00
|
|
|
.TP
|
|
|
|
.B POLL_HUP
|
2015-01-18 11:27:57 +00:00
|
|
|
Device disconnected.
|
2007-06-29 17:32:54 +00:00
|
|
|
.RE
|
2015-01-18 06:26:17 +00:00
|
|
|
.PP
|
|
|
|
The following value can be placed in
|
|
|
|
.I si_code
|
|
|
|
for a
|
|
|
|
.BR SIGSYS
|
|
|
|
signal:
|
|
|
|
.RS 4
|
2015-01-18 11:23:46 +00:00
|
|
|
.TP
|
2015-01-18 06:26:17 +00:00
|
|
|
.BR SYS_SECCOMP " (since Linux 3.5)"
|
2015-01-18 11:27:57 +00:00
|
|
|
Triggered by a
|
2015-01-18 06:26:17 +00:00
|
|
|
.BR seccomp (2)
|
2015-01-18 11:27:57 +00:00
|
|
|
filter rule.
|
2015-01-18 06:26:17 +00:00
|
|
|
.RE
|
2021-08-08 08:41:12 +00:00
|
|
|
.SS Dynamically probing for flag bit support
|
|
|
|
The
|
|
|
|
.BR sigaction ()
|
|
|
|
call on Linux accepts unknown bits set in
|
2021-08-09 00:26:50 +00:00
|
|
|
.I act\->sa_flags
|
2021-08-08 08:41:12 +00:00
|
|
|
without error.
|
|
|
|
The behavior of the kernel starting with Linux 5.11 is that a second
|
|
|
|
.BR sigaction ()
|
|
|
|
will clear unknown bits from
|
2021-08-09 00:26:50 +00:00
|
|
|
.IR oldact\->sa_flags .
|
2021-08-08 08:41:12 +00:00
|
|
|
However, historically, a second
|
|
|
|
.BR sigaction ()
|
|
|
|
call would typically leave those bits set in
|
2021-08-09 00:26:50 +00:00
|
|
|
.IR oldact\->sa_flags .
|
2021-08-08 08:41:12 +00:00
|
|
|
.PP
|
|
|
|
This means that support for new flags cannot be detected
|
|
|
|
simply by testing for a flag in
|
|
|
|
.IR sa_flags ,
|
|
|
|
and a program must test that
|
|
|
|
.B SA_UNSUPPORTED
|
|
|
|
has been cleared before relying on the contents of
|
|
|
|
.IR sa_flags .
|
|
|
|
.PP
|
|
|
|
Since the behavior of the signal handler cannot be guaranteed
|
|
|
|
unless the check passes,
|
|
|
|
it is wise to either block the affected signal
|
|
|
|
while registering the handler and performing the check in this case,
|
|
|
|
or where this is not possible,
|
|
|
|
for example if the signal is synchronous, to issue the second
|
|
|
|
.BR sigaction ()
|
|
|
|
in the signal handler itself.
|
|
|
|
.PP
|
|
|
|
In kernels that do not support a specific flag,
|
|
|
|
the kernel's behavior is as if the flag was not set,
|
|
|
|
even if the flag was set in
|
2021-08-09 00:26:50 +00:00
|
|
|
.IR act\->sa_flags .
|
2021-08-08 08:41:12 +00:00
|
|
|
.PP
|
|
|
|
The flags
|
|
|
|
.BR SA_NOCLDSTOP ,
|
|
|
|
.BR SA_NOCLDWAIT ,
|
|
|
|
.BR SA_SIGINFO ,
|
|
|
|
.BR SA_ONSTACK ,
|
|
|
|
.BR SA_RESTART ,
|
|
|
|
.BR SA_NODEFER ,
|
|
|
|
.BR SA_RESETHAND ,
|
|
|
|
and, if defined by the architecture,
|
|
|
|
.B SA_RESTORER
|
|
|
|
may not be reliably probed for using this mechanism,
|
|
|
|
because they were introduced before Linux 5.11.
|
|
|
|
However, in general, programs may assume that these flags are supported,
|
|
|
|
since they have all been supported since Linux 2.6,
|
|
|
|
which was released in the year 2003.
|
2021-08-09 00:22:26 +00:00
|
|
|
.PP
|
|
|
|
See EXAMPLES below for a demonstration of the use of
|
|
|
|
.BR SA_UNSUPPORTED .
|
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
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.SH RETURN VALUE
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2005-09-15 11:47:39 +00:00
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.BR sigaction ()
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2013-04-19 06:36:42 +00:00
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returns 0 on success; on error, \-1 is returned, and
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.I errno
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is set to indicate the error.
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2004-11-03 13:51:07 +00:00
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.SH ERRORS
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.TP
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.B EFAULT
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2005-09-15 11:47:39 +00:00
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.IR act " or " oldact
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points to memory which is not a valid part of the process address space.
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2004-11-03 13:51:07 +00:00
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.TP
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.B EINVAL
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2007-04-12 22:42:49 +00:00
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An invalid signal was specified.
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This will also be generated if an attempt
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2004-11-03 13:51:07 +00:00
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is made to change the action for
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2020-06-12 03:23:23 +00:00
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.BR SIGKILL " or " SIGSTOP ,
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2005-09-15 11:47:39 +00:00
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which cannot be caught or ignored.
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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
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.SH CONFORMING TO
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2015-04-18 06:21:48 +00:00
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POSIX.1-2001, POSIX.1-2008, SVr4.
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2007-05-18 16:30:46 +00:00
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.\" SVr4 does not document the EINTR condition.
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2004-11-03 13:51:07 +00:00
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.SH NOTES
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2008-10-04 06:27:56 +00:00
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A child created via
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2008-10-04 05:49:53 +00:00
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.BR fork (2)
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inherits a copy of its parent's signal dispositions.
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During an
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.BR execve (2),
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the dispositions of handled signals are reset to the default;
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the dispositions of ignored signals are left unchanged.
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_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.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_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.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_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.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, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
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.PP
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2007-06-08 09:56:56 +00:00
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According to POSIX, the behavior of a process is undefined after it
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2004-11-18 13:37:14 +00:00
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ignores a
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.BR SIGFPE ,
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.BR SIGILL ,
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or
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2007-09-20 16:26:31 +00:00
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.B SIGSEGV
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2004-11-18 13:37:14 +00:00
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signal that was not generated by
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2007-05-11 23:07:02 +00:00
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.BR kill (2)
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2004-11-18 13:37:14 +00:00
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or
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2007-05-11 23:07:02 +00:00
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.BR raise (3).
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2004-11-03 13:51:07 +00:00
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Integer division by zero has undefined result.
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2004-11-18 13:37:14 +00:00
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On some architectures it will generate a
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.B SIGFPE
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signal.
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2007-06-21 05:38:48 +00:00
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(Also dividing the most negative integer by \-1 may generate
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.BR SIGFPE .)
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2004-11-03 13:51:07 +00:00
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Ignoring this signal might lead to an endless loop.
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.PP
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2004-11-18 13:37:14 +00:00
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POSIX.1-1990 disallowed setting the action for
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.B SIGCHLD
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to
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.BR SIG_IGN .
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2015-04-18 06:21:48 +00:00
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POSIX.1-2001 and later allow this possibility, so that ignoring
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2004-11-18 13:37:14 +00:00
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.B SIGCHLD
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can be used to prevent the creation of zombies (see
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.BR wait (2)).
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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
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Nevertheless, the historical BSD and System\ V behaviors for ignoring
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2004-11-18 13:37:14 +00:00
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.B SIGCHLD
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differ, so that the only completely portable method of ensuring that
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terminated children do not become zombies is to catch the
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.B SIGCHLD
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signal and perform a
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.BR wait (2)
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or similar.
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2004-11-03 13:51:07 +00:00
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.PP
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intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
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POSIX.1-1990 specified only
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2004-11-03 13:51:07 +00:00
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.BR SA_NOCLDSTOP .
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2004-11-18 13:37:14 +00:00
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POSIX.1-2001 added
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2015-04-18 06:25:43 +00:00
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.BR SA_NOCLDSTOP ,
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2004-11-18 13:37:14 +00:00
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.BR SA_NOCLDWAIT ,
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.BR SA_NODEFER ,
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2015-04-18 06:25:43 +00:00
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.BR SA_ONSTACK ,
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.BR SA_RESETHAND ,
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.BR SA_RESTART ,
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2004-11-18 13:37:14 +00:00
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and
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.BR SA_SIGINFO .
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Use of these latter values in
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2004-11-03 13:51:07 +00:00
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.I sa_flags
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2004-11-18 13:37:14 +00:00
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may be less portable in applications intended for older
|
intro.1, time.1, accept.2, bind.2, connect.2, execve.2, flock.2, getdents.2, getpriority.2, getuid.2, intro.2, ioctl.2, mincore.2, mknod.2, personality.2, ptrace.2, read.2, recv.2, select_tut.2, send.2, sendfile.2, shmctl.2, sigaction.2, signal.2, stat.2, times.2, truncate.2, umask.2, wait.2, MB_CUR_MAX.3, MB_LEN_MAX.3, argz_add.3, btowc.3, clearenv.3, clock.3, cmsg.3, end.3, endian.3, errno.3, exit.3, fgetwc.3, fgetws.3, fopen.3, fputwc.3, fputws.3, fseek.3, fwide.3, getfsent.3, getgrnam.3, gethostid.3, getipnodebyname.3, getmntent.3, getpwnam.3, getwchar.3, grantpt.3, iconv.3, iconv_close.3, iconv_open.3, insque.3, intro.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, malloc.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, mkstemp.3, mktemp.3, nl_langinfo.3, openpty.3, posix_openpt.3, printf.3, ptsname.3, putwchar.3, qecvt.3, rcmd.3, readdir.3, rexec.3, rpc.3, setnetgrent.3, shm_open.3, sigpause.3, stdin.3, stpcpy.3, strftime.3, strptime.3, syslog.3, towctrans.3, towlower.3, towupper.3, ttyslot.3, ungetwc.3, unlocked_stdio.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, 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, wprintf.3, console_ioctl.4, pts.4, elf.5, filesystems.5, hosts.5, proc.5, ttytype.5, boot.7, capabilities.7, credentials.7, epoll.7, glob.7, koi8-r.7, path_resolution.7, pty.7, signal.7, suffixes.7, time.7, unicode.7, unix.7, uri.7, utf-8.7: global fix: s/Unix/UNIX/
The man pages were rather inconsistent in the use of "Unix"
versus "UNIX". Let's go with the trademark usage.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2010-10-12 04:45:38 +00:00
|
|
|
UNIX implementations.
|
2004-11-18 13:37:14 +00:00
|
|
|
.PP
|
2004-11-03 13:51:07 +00:00
|
|
|
The
|
|
|
|
.B SA_RESETHAND
|
|
|
|
flag is compatible with the SVr4 flag of the same name.
|
|
|
|
.PP
|
|
|
|
The
|
|
|
|
.B SA_NODEFER
|
|
|
|
flag is compatible with the SVr4 flag of the same name under kernels
|
2020-11-14 06:36:34 +00:00
|
|
|
1.3.9 and later.
|
2007-04-12 22:42:49 +00:00
|
|
|
On older kernels the Linux implementation
|
2004-11-03 13:51:07 +00:00
|
|
|
allowed the receipt of any signal, not just the one we are installing
|
|
|
|
(effectively overriding any
|
|
|
|
.I sa_mask
|
|
|
|
settings).
|
|
|
|
.PP
|
2004-11-18 13:37:14 +00:00
|
|
|
.BR sigaction ()
|
2010-08-29 07:03:11 +00:00
|
|
|
can be called with a NULL second argument to query the current signal
|
2007-04-12 22:42:49 +00:00
|
|
|
handler.
|
|
|
|
It can also be used to check whether a given signal is valid for
|
2010-08-29 07:03:11 +00:00
|
|
|
the current machine by calling it with NULL second and third arguments.
|
2004-11-03 13:51:07 +00:00
|
|
|
.PP
|
2007-04-12 22:42:49 +00:00
|
|
|
It is not possible to block
|
2005-09-15 11:47:39 +00:00
|
|
|
.BR SIGKILL " or " SIGSTOP
|
|
|
|
(by specifying them in
|
|
|
|
.IR sa_mask ).
|
|
|
|
Attempts to do so are silently ignored.
|
|
|
|
.PP
|
2004-11-03 13:51:07 +00:00
|
|
|
See
|
|
|
|
.BR sigsetops (3)
|
|
|
|
for details on manipulating signal sets.
|
2007-05-04 20:32:14 +00:00
|
|
|
.PP
|
|
|
|
See
|
intro.1, localedef.1, memusage.1, memusagestat.1, bpf.2, execve.2, fork.2, keyctl.2, request_key.2, sigaction.2, signal.2, socket.2, dlopen.3, getauxval.3, gnu_get_libc_version.3, pthread_atfork.3, sem_post.3, setjmp.3, strftime.3, veth.4, locale.5, nscd.conf.5, resolv.conf.5, address_families.7, armscii-8.7, ascii.7, capabilities.7, cgroups.7, charsets.7, cp1251.7, cp1252.7, 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, keyrings.7, koi8-r.7, koi8-u.7, libc.7, locale.7, man.7, network_namespaces.7, persistent-keyring.7, session-keyring.7, signal.7, unicode.7, uri.7, user-keyring.7, user-session-keyring.7: ffix: replace - with real\-
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-07-06 12:28:51 +00:00
|
|
|
.BR signal\-safety (7)
|
2007-06-21 22:55:04 +00:00
|
|
|
for a list of the async-signal-safe functions that can be
|
2007-05-04 20:32:14 +00:00
|
|
|
safely called inside from inside a signal handler.
|
2015-02-19 09:17:07 +00:00
|
|
|
.\"
|
_exit.2, access.2, brk.2, chmod.2, clone.2, epoll_wait.2, eventfd.2, fork.2, getgroups.2, gethostname.2, getpid.2, getpriority.2, killpg.2, mmap.2, poll.2, posix_fadvise.2, pread.2, ptrace.2, readv.2, sched_setaffinity.2, select.2, seteuid.2, setgid.2, setresuid.2, setreuid.2, setuid.2, sigaction.2, signalfd.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, stat.2, timer_create.2, uname.2, wait.2, wait4.2, mq_notify.3, mq_open.3, sigqueue.3, man-pages.7: Remove "ABI" from "C library/kernel ABI differences" subheadings
The "ABI" doesn't really convey anything significant in
the title. These subsections are about describing differences
between the kernel and (g)libc interfaces.
Reported-by: Andries E. Brouwer <Andries.Brouwer@cwi.nl>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-05-08 11:08:00 +00:00
|
|
|
.SS C library/kernel differences
|
2015-03-22 10:40:55 +00:00
|
|
|
The glibc wrapper function for
|
|
|
|
.BR sigaction ()
|
|
|
|
gives an error
|
|
|
|
.RB ( EINVAL )
|
|
|
|
on attempts to change the disposition of the two real-time signals
|
|
|
|
used internally by the NPTL threading implementation.
|
|
|
|
See
|
|
|
|
.BR nptl (7)
|
|
|
|
for details.
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.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_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.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_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.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, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
|
|
|
.PP
|
2017-10-08 12:46:20 +00:00
|
|
|
On architectures where the signal trampoline resides in the C library,
|
|
|
|
the glibc wrapper function for
|
|
|
|
.BR sigaction ()
|
|
|
|
places the address of the trampoline code in the
|
|
|
|
.I act.sa_restorer
|
|
|
|
field and sets the
|
|
|
|
.B SA_RESTORER
|
|
|
|
flag in the
|
|
|
|
.IR act.sa_flags
|
|
|
|
field.
|
|
|
|
See
|
|
|
|
.BR sigreturn (2).
|
|
|
|
.PP
|
2015-02-19 09:17:07 +00:00
|
|
|
The original Linux system call was named
|
|
|
|
.BR sigaction ().
|
|
|
|
However, with the addition of real-time signals in Linux 2.2,
|
|
|
|
the fixed-size, 32-bit
|
|
|
|
.IR sigset_t
|
|
|
|
type supported by that system call was no longer fit for purpose.
|
|
|
|
Consequently, a new system call,
|
|
|
|
.BR rt_sigaction (),
|
|
|
|
was added to support an enlarged
|
|
|
|
.IR sigset_t
|
|
|
|
type.
|
|
|
|
The new system call takes a fourth argument,
|
|
|
|
.IR "size_t sigsetsize" ,
|
|
|
|
which specifies the size in bytes of the signal sets in
|
|
|
|
.IR act.sa_mask
|
|
|
|
and
|
|
|
|
.IR oldact.sa_mask .
|
|
|
|
This argument is currently required to have the value
|
|
|
|
.IR sizeof(sigset_t)
|
|
|
|
(or the error
|
|
|
|
.B EINVAL
|
|
|
|
results).
|
|
|
|
The glibc
|
|
|
|
.BR sigaction ()
|
|
|
|
wrapper function hides these details from us, transparently calling
|
|
|
|
.BR rt_sigaction ()
|
|
|
|
when the kernel provides it.
|
|
|
|
.\"
|
2007-05-16 03:03:15 +00:00
|
|
|
.SS Undocumented
|
|
|
|
Before the introduction of
|
2015-03-22 10:46:13 +00:00
|
|
|
.BR SA_SIGINFO ,
|
2019-02-25 10:05:50 +00:00
|
|
|
it was also possible to get some additional information about the signal.
|
|
|
|
This was done by providing an
|
2007-05-16 03:03:15 +00:00
|
|
|
.I sa_handler
|
2019-02-25 10:05:50 +00:00
|
|
|
signal handler with a second argument of type
|
|
|
|
.IR "struct sigcontext" ,
|
|
|
|
which is the same structure as the one that is passed in the
|
2019-02-22 16:26:08 +00:00
|
|
|
.I uc_mcontext
|
|
|
|
field of the
|
2019-02-25 10:05:50 +00:00
|
|
|
.I ucontext
|
|
|
|
structure that is passed (via a pointer) in the third argument of the
|
2019-02-22 16:26:08 +00:00
|
|
|
.I sa_sigaction
|
2019-02-25 10:05:50 +00:00
|
|
|
handler.
|
bdflush.2, get_robust_list.2, kexec_load.2, madvise.2, mmap.2, mount.2, prctl.2, query_module.2, rt_sigqueueinfo.2, shmget.2, sigaction.2, syscalls.2, umount.2, malloc.3, hpsa.4, initrd.4, proc.5, bootparam.7, icmp.7, netlink.7, signal.7: Global fix: use "Linux kernel source" consistently
Rather than "kernel source".
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2012-09-24 08:02:34 +00:00
|
|
|
See the relevant Linux kernel sources for details.
|
2007-05-16 03:03:15 +00:00
|
|
|
This use is obsolete now.
|
2005-09-15 11:47:39 +00:00
|
|
|
.SH BUGS
|
2019-12-23 17:31:46 +00:00
|
|
|
When delivering a signal with a
|
|
|
|
.B SA_SIGINFO
|
|
|
|
handler,
|
|
|
|
the kernel does not always provide meaningful values
|
|
|
|
for all of the fields of the
|
|
|
|
.I siginfo_t
|
|
|
|
that are relevant for that signal.
|
|
|
|
.PP
|
2005-09-15 11:47:39 +00:00
|
|
|
In kernels up to and including 2.6.13, specifying
|
|
|
|
.B SA_NODEFER
|
|
|
|
in
|
|
|
|
.I sa_flags
|
2007-06-28 19:04:25 +00:00
|
|
|
prevents not only the delivered signal from being masked during
|
2005-09-15 11:47:39 +00:00
|
|
|
execution of the handler, but also the signals specified in
|
|
|
|
.IR sa_mask .
|
2007-06-23 08:16:35 +00:00
|
|
|
This bug was fixed in kernel 2.6.14.
|
2020-11-14 06:48:58 +00:00
|
|
|
.\" commit 69be8f189653cd81aae5a74e26615b12871bb72e
|
2020-05-21 08:00:37 +00:00
|
|
|
.SH EXAMPLES
|
2007-05-25 18:42:55 +00:00
|
|
|
See
|
|
|
|
.BR mprotect (2).
|
2021-08-09 00:22:26 +00:00
|
|
|
.SS Probing for flag support
|
2021-08-08 08:41:13 +00:00
|
|
|
The following example program exits with status
|
|
|
|
.B EXIT_SUCCESS
|
|
|
|
if
|
|
|
|
.B SA_EXPOSE_TAGBITS
|
|
|
|
is determined to be supported, and
|
|
|
|
.B EXIT_FAILURE
|
|
|
|
otherwise.
|
|
|
|
.PP
|
|
|
|
.EX
|
|
|
|
#include <signal.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
|
|
|
|
void
|
|
|
|
handler(int signo, siginfo_t *info, void *context)
|
|
|
|
{
|
|
|
|
struct sigaction oldact;
|
|
|
|
|
2021-08-09 00:19:43 +00:00
|
|
|
if (sigaction(SIGSEGV, NULL, &oldact) == \-1 ||
|
|
|
|
(oldact.sa_flags & SA_UNSUPPORTED) ||
|
|
|
|
!(oldact.sa_flags & SA_EXPOSE_TAGBITS)) {
|
2021-08-08 08:41:13 +00:00
|
|
|
_exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
_exit(EXIT_SUCCESS);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
main(void)
|
|
|
|
{
|
2021-08-09 00:19:43 +00:00
|
|
|
struct sigaction act = { 0 };
|
2021-08-08 08:41:13 +00:00
|
|
|
|
|
|
|
act.sa_flags = SA_SIGINFO | SA_UNSUPPORTED | SA_EXPOSE_TAGBITS;
|
|
|
|
act.sa_sigaction = &handler;
|
2021-08-09 00:19:43 +00:00
|
|
|
if (sigaction(SIGSEGV, &act, NULL) == \-1) {
|
2021-08-08 08:41:13 +00:00
|
|
|
perror("sigaction");
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
|
|
|
raise(SIGSEGV);
|
|
|
|
}
|
|
|
|
.EE
|
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
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.SH SEE ALSO
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2004-11-03 13:51:07 +00:00
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.BR kill (1),
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.BR kill (2),
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.BR pause (2),
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2020-05-16 23:34:25 +00:00
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.BR pidfd_send_signal (2),
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2013-07-30 03:09:22 +00:00
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.BR restart_syscall (2),
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2020-05-16 23:34:25 +00:00
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.BR seccomp (2),
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2004-11-03 13:51:07 +00:00
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.BR sigaltstack (2),
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.BR signal (2),
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2008-02-11 11:41:18 +00:00
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.BR signalfd (2),
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2005-09-15 11:47:39 +00:00
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.BR sigpending (2),
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.BR sigprocmask (2),
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2016-08-07 18:24:56 +00:00
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.BR sigreturn (2),
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2005-09-15 11:47:39 +00:00
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.BR sigsuspend (2),
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2004-11-18 13:37:14 +00:00
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.BR wait (2),
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2016-11-04 17:00:02 +00:00
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.BR killpg (3),
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2004-11-03 13:51:07 +00:00
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.BR raise (3),
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.BR siginterrupt (3),
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getrlimit.2, kill.2, rt_sigqueueinfo.2, sigaction.2, signal.2, signalfd.2, sigprocmask.2, sigwaitinfo.2, psignal.3, pthread_sigqueue.3, credentials.7, signal.7: Change reference to "sigqueue(2)" to "sigqueue(3)"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2011-09-18 04:27:57 +00:00
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.BR sigqueue (3),
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2004-11-03 13:51:07 +00:00
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.BR sigsetops (3),
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2005-11-29 15:01:54 +00:00
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.BR sigvec (3),
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2006-03-31 07:10:17 +00:00
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.BR core (5),
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2004-11-03 13:51:07 +00:00
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.BR signal (7)
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