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16 Commits

Author SHA1 Message Date
Michael Kerrisk 1d767b552e getent.1, ldd.1, locale.1, localedef.1, memusage.1, memusagestat.1, mtrace.1, _exit.2, _syscall.2, accept.2, access.2, acct.2, add_key.2, adjtimex.2, alloc_hugepages.2, arch_prctl.2, bdflush.2, bind.2, bpf.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, close_range.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, fanotify_init.2, fanotify_mark.2, fcntl.2, flock.2, fork.2, fsync.2, futex.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, 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, init_module.2, inotify_add_watch.2, inotify_rm_watch.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl.2, ioctl_console.2, ioctl_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_fslabel.2, ioctl_getfsmap.2, ioctl_ns.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ipc.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, 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, open_by_handle_at.2, openat2.2, pause.2, pciconfig_read.2, perf_event_open.2, perfmonctl.2, personality.2, pidfd_getfd.2, pidfd_open.2, pidfd_send_signal.2, pipe.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, readlink.2, readv.2, reboot.2, recv.2, remap_file_pages.2, removexattr.2, rename.2, request_key.2, restart_syscall.2, rmdir.2, rt_sigqueueinfo.2, s390_guarded_storage.2, s390_pci_mmio_write.2, s390_runtime_instr.2, s390_sthyi.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, set_thread_area.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, setup.2, setxattr.2, sgetmask.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, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, stime.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscall.2, syscalls.2, sysctl.2, sysfs.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, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.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_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, 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, cexp.3, cexp2.3, cfree.3, cimag.3, circleq.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, des_crypt.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dladdr.3, dlerror.3, dlinfo.3, dlopen.3, dlsym.3, drand48.3, drand48_r.3, duplocale.3, dysize.3, ecvt.3, ecvt_r.3, encrypt.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, fgetc.3, fgetgrent.3, fgetpwent.3, fgetwc.3, fgetws.3, fileno.3, finite.3, flockfile.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fnmatch.3, fopen.3, fopencookie.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.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, getutmp.3, getw.3, getwchar.3, glob.3, gnu_get_libc_version.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, inet_pton.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, lio_listio.3, list.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, makedev.3, mallinfo.3, malloc.3, malloc_get_state.3, malloc_hook.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.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, newlocale.3, nextafter.3, nextup.3, nl_langinfo.3, ntp_gettime.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, posix_spawn.3, pow.3, pow10.3, printf.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_setsigmask_np.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_kill_other_threads_np.3, pthread_mutex_consistent.3, pthread_mutexattr_getpshared.3, pthread_mutexattr_setrobust.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_spin_init.3, pthread_spin_lock.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, readdir_r.3, realpath.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, 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, 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, sigwait.3, sin.3, sincos.3, sinh.3, sleep.3, slist.3, sockatmark.3, sqrt.3, stailq.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, 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, tailq.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, undocumented.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, xdr.3, y0.3, cciss.4, console_codes.4, dsp56k.4, hpsa.4, initrd.4, loop.4, lp.4, msr.4, random.4, rtc.4, smartpqi.4, veth.4, wavelan.4, acct.5, core.5, elf.5, hosts.5, locale.5, proc.5, resolv.conf.5, rpc.5, slabinfo.5, sysfs.5, tmpfs.5, utmp.5, address_families.7, aio.7, attributes.7, bootparam.7, capabilities.7, cgroups.7, complex.7, ddp.7, environ.7, epoll.7, fanotify.7, feature_test_macros.7, hier.7, inode.7, inotify.7, ip.7, ipv6.7, keyrings.7, locale.7, man-pages.7, man.7, math_error.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, numa.7, packet.7, pkeys.7, pthreads.7, queue.7, raw.7, rtnetlink.7, sched.7, session-keyring.7, shm_overview.7, sigevent.7, signal-safety.7, signal.7, sock_diag.7, socket.7, spufs.7, symlink.7, system_data_types.7, tcp.7, time_namespaces.7, udp.7, udplite.7, unicode.7, unix.7, uri.7, user_namespaces.7, vdso.7, vsock.7, x25.7, iconvconfig.8, ld.so.8, ldconfig.8, sln.8, tzselect.8: tstamp 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2021-03-22 00:15:34 +01:00
Michael Kerrisk 0b174fe008 clone.2, ioctl_tty.2, syslog.2, setlocale.3, stdio.3, console_codes.4, inode.7, namespaces.7, netlink.7, signal-safety.7, socket.7: Better table formatting 
In particular, allow for rendering in widths different from
(especially less than) 80 columns.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2021-01-07 00:05:48 +01:00
Michael Kerrisk 9f43659f85 getent.1, access.2, cacheflush.2, chroot.2, clock_getres.2, fcntl.2, getrusage.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, link.2, llseek.2, mmap.2, mount.2, readv.2, restart_syscall.2, semctl.2, set_mempolicy.2, set_tid_address.2, shmctl.2, sigaction.2, sigaltstack.2, spu_create.2, statfs.2, subpage_prot.2, syscalls.2, timer_getoverrun.2, uselib.2, INFINITY.3, __ppc_set_ppr_med.3, bstring.3, btree.3, ctime.3, fgetc.3, fopen.3, getcontext.3, gethostbyname.3, getnetent.3, getprotoent.3, getservent.3, inet.3, j0.3, list.3, makecontext.3, nextafter.3, posix_memalign.3, profil.3, pthread_tryjoin_np.3, puts.3, rcmd.3, resolver.3, rtime.3, sigsetops.3, strnlen.3, tailq.3, elf.5, filesystems.5, nscd.conf.5, proc.5, utmp.5, attributes.7, ipv6.7, packet.7, pthreads.7, signal-safety.7, signal.7, spufs.7, system_data_types.7, tcp.7: tstamp 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2020-12-21 16:19:35 +01:00
Michael Kerrisk 659e4f17cc signal-safety.7: Note async-signal-safety details for errno 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2020-11-14 08:04:34 +01:00
Michael Kerrisk bffbb22fda iconv.1, locale.1, memusage.1, memusagestat.1, pldd.1, sprof.1, _syscall.2, add_key.2, adjtimex.2, bind.2, bpf.2, chown.2, clone.2, close.2, copy_file_range.2, eventfd.2, fanotify_init.2, fanotify_mark.2, fork.2, fsync.2, futex.2, getdents.2, getrlimit.2, getxattr.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, ioctl_fat.2, ioctl_getfsmap.2, ioctl_ns.2, ioctl_tty.2, ioctl_userfaultfd.2, kcmp.2, keyctl.2, listen.2, listxattr.2, mbind.2, membarrier.2, memfd_create.2, mkdir.2, move_pages.2, mremap.2, msync.2, nfsservctl.2, open.2, perf_event_open.2, pidfd_send_signal.2, pipe.2, pivot_root.2, pkey_alloc.2, process_vm_readv.2, ptrace.2, readlink.2, readv.2, recv.2, recvmmsg.2, rename.2, request_key.2, s390_runtime_instr.2, sched_setaffinity.2, seccomp.2, send.2, sendmmsg.2, sigaltstack.2, signalfd.2, socket.2, socketpair.2, splice.2, spu_create.2, spu_run.2, statfs.2, syscall.2, sysctl.2, sysfs.2, tee.2, timer_getoverrun.2, timer_settime.2, umount.2, userfaultfd.2, utimensat.2, wait4.2, INFINITY.3, __ppc_get_timebase.3, __setfpucw.3, abort.3, aio_cancel.3, aio_error.3, aio_read.3, aio_return.3, atexit.3, backtrace.3, basename.3, bsearch.3, bswap.3, cacos.3, cacosh.3, catan.3, catanh.3, cexp2.3, clock_getcpuclockid.3, clog2.3, cmsg.3, confstr.3, div.3, dl_iterate_phdr.3, dlerror.3, dlinfo.3, dlopen.3, dlsym.3, duplocale.3, encrypt.3, end.3, endian.3, envz_add.3, err.3, expm1.3, fdim.3, flockfile.3, fmtmsg.3, frexp.3, ftw.3, get_nprocs_conf.3, get_phys_pages.3, getaddrinfo_a.3, getauxval.3, getdate.3, getdtablesize.3, getgrent_r.3, getgrouplist.3, gethostbyname.3, getline.3, getnameinfo.3, getopt.3, getprotoent_r.3, getpwent_r.3, getpwnam.3, getservent_r.3, getsubopt.3, getutent.3, glob.3, gnu_get_libc_version.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_ntop.3, inet_pton.3, insque.3, killpg.3, makecontext.3, mallinfo.3, malloc.3, malloc_hook.3, malloc_info.3, mallopt.3, matherr.3, mbsnrtowcs.3, mbstowcs.3, mcheck.3, mempcpy.3, mq_getattr.3, mq_notify.3, mtrace.3, newlocale.3, nextafter.3, ntp_gettime.3, offsetof.3, open_memstream.3, pow.3, printf.3, pthread_attr_init.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setstack.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_create.3, pthread_detach.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_mutex_consistent.3, pthread_mutexattr_setrobust.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_spin_init.3, pthread_testcancel.3, pthread_tryjoin_np.3, ptsname.3, qsort.3, rand.3, random.3, remainder.3, rpmatch.3, rtime.3, rtnetlink.3, scalb.3, scalbln.3, scandir.3, sem_getvalue.3, sem_wait.3, setaliasent.3, setlogmask.3, sigwait.3, sincos.3, sockatmark.3, stdarg.3, stpcpy.3, strcat.3, strfmon.3, strptime.3, strtod.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, tsearch.3, uselocale.3, wcstok.3, wcstombs.3, wordexp.3, y0.3, loop.4, vcs.4, veth.4, charmap.5, core.5, filesystems.5, gai.conf.5, hosts.5, hosts.equiv.5, locale.5, nss.5, repertoiremap.5, securetty.5, shells.5, ttytype.5, ascii.7, complex.7, cpuset.7, credentials.7, fanotify.7, hier.7, inotify.7, ip.7, mount_namespaces.7, mq_overview.7, netlink.7, network_namespaces.7, pid_namespaces.7, pkeys.7, rtld-audit.7, rtnetlink.7, sem_overview.7, signal-safety.7, sock_diag.7, spufs.7, standards.7, symlink.7, tcp.7, time_namespaces.7, unix.7, user_namespaces.7, xattr.7, ldconfig.8: tstamp 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2020-06-09 14:48:40 +02:00
Michael Kerrisk 5dbd04b5f9 pipe.2, socketpair.2, dlopen.3, posix_memalign.3, signal-safety.7: Correct bogus POSIX.1 standards names 
POSIX.1-2003 ==> POSIX.1-2001 TC1
POSIX.1-2004 ==> POSIX.1-2001 TC2
POSIX.1-2013 ==> POSIX.1-2008 TC1
POSIX.1-2016 ==> POSIX.1-2008 TC2

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2020-05-26 13:25:54 +02:00
Michael Kerrisk 49cb13ca52 signal-safety.7: ffix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2019-11-05 10:38:54 +01:00
Michael Kerrisk 867c9b3408 localedef.1, close.2, copy_file_range.2, execve.2, get_robust_list.2, getdomainname.2, gethostname.2, inotify_add_watch.2, io_submit.2, ioctl_fideduperange.2, kcmp.2, kill.2, mmap.2, move_pages.2, perf_event_open.2, ptrace.2, rt_sigqueueinfo.2, sched_setaffinity.2, sched_setparam.2, setns.2, sigaction.2, signalfd.2, statx.2, syscall.2, syscalls.2, uname.2, write.2, errno.3, fexecve.3, getauxval.3, printf.3, pthread_mutex_consistent.3, pthread_mutexattr_init.3, pthread_mutexattr_setrobust.3, pthread_setcancelstate.3, regex.3, strtok.3, strtol.3, ttyname.3, smartpqi.4, core.5, resolv.conf.5, man-pages.7, mq_overview.7, operator.7, pthreads.7, signal-safety.7, sysvipc.7: Update timestamp 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2019-10-11 10:45:02 +02:00
Michael Kerrisk 0b6cf5d26e pthreads.7: Minor tweaks to Carlos O'Donell's patch 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2019-10-05 14:54:24 +03:00
Carlos O'Donell dbb01cbbdb pthread_setcancelstate.3, pthreads.7, signal-safety.7: Describe issues with cancellation points in signal handlers 
In a recent conversation with Mathieu Desnoyers I was reminded
that we haven't written up anything about how deferred
cancellation and asynchronous signal handlers interact. Mathieu
ran into some of this behaviour and I promised to improve the
documentation in this area to point out the potential pitfall.

Thoughts?

8< --- 8< --- 8<
In pthread_setcancelstate.3, pthreads.7, and signal-safety.7 we
describe that if you have an asynchronous signal nesting over a
deferred cancellation region that any cancellation point in the
signal handler may trigger a cancellation that will behave
as-if it was an asynchronous cancellation. This asynchronous
cancellation may have unexpected effects on the consistency of
the application. Therefore care should be taken with asynchronous
signals and deferred cancellation.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2019-10-05 14:54:02 +03:00
Michael Kerrisk a721e8b25f aio.7, arp.7, attributes.7, boot.7, cgroups.7, cpuset.7, credentials.7, fanotify.7, fifo.7, glob.7, hier.7, hostname.7, icmp.7, inode.7, inotify.7, keyrings.7, libc.7, mailaddr.7, mount_namespaces.7, mq_overview.7, nptl.7, numa.7, path_resolution.7, persistent-keyring.7, pid_namespaces.7, pipe.7, pkeys.7, process-keyring.7, pthreads.7, pty.7, random.7, sched.7, sem_overview.7, session-keyring.7, shm_overview.7, signal-safety.7, signal.7, spufs.7, standards.7, symlink.7, termio.7, thread-keyring.7, time.7, unicode.7, user-keyring.7, user-session-keyring.7, user_namespaces.7, utf-8.7, xattr.7: ffix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-18 00:59:04 +02:00
Michael Kerrisk afa27faacf Removed trailing white space at end of lines 2017-03-13 21:17:48 +01:00
Michael Kerrisk 31a1b45ece add_key.2, execve.2, fork.2, fsync.2, getrandom.2, getrlimit.2, getxattr.2, inotify_add_watch.2, ioctl.2, ioctl_fat.2, kcmp.2, keyctl.2, link.2, listxattr.2, lseek.2, madvise.2, mincore.2, mlock.2, nanosleep.2, poll.2, posix_fadvise.2, read.2, readv.2, recv.2, request_key.2, select.2, send.2, setxattr.2, sigaction.2, stat.2, statfs.2, syscall.2, tkill.2, truncate.2, unlink.2, vfork.2, write.2, __ppc_set_ppr_med.3, aio_suspend.3, backtrace.3, bcmp.3, bcopy.3, bzero.3, exec.3, fopen.3, fts.3, ftw.3, getline.3, getmntent.3, getopt.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, memset.3, random.3, random_r.3, resolver.3, scandir.3, scanf.3, sem_post.3, sem_wait.3, setjmp.3, sleep.3, strerror.3, strverscmp.3, system.3, random.4, core.5, intro.5, resolv.conf.5, slabinfo.5, environ.7, ip.7, keyrings.7, man.7, persistent-keyring.7, pipe.7, process-keyring.7, random.7, session-keyring.7, signal-safety.7, signal.7, thread-keyring.7, unix.7, user-keyring.7, user-session-keyring.7, ld.so.8: tstamp 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-03-13 21:14:49 +01:00
Michael Kerrisk 67557cd9d1 signal-safety.7: Note async-signal-safety problems caused by pthread_atfork() 
See https://bugzilla.kernel.org/show_bug.cgi?id=25292

And there will likely be future changes as well.
Quoting http://www.opengroup.org/austin/aardvark/latest/xshbug3.txt:

    COMMENT                          Enhancement Request Number 15
    rajani.g.k:xxxxxx               Defect in XSH 2.4.3 (rdvk#  6)
    {GKRFORK012009}                   Thu, 8 Jan 2009 07:41:10 GMT

    [...]

    As per this section, XSH P1529, L49389-49402, it is possible
    that multithreaded libraries could be used by single threaded
    applications. In which case, atfork handlers are essential for
    the libraries to protect their internal state during fork. As
    explained further P1530, L49403-49404, pthread_atfork
    functions are mainly required to acquire/release mutex locks,
    for protecting the applications/libraries from fork() calls.
    C-library needs to as well have an atfork handler which
    acquires all the required locks to protect its memory state
    across fork().

    The acquire/release mutex calls themselves are aync-signal
    unsafe operations. Use of them makes pthread_atfork handlers
    async-signal unsafe which in turn makes fork() async-signal
    unsafe when called by an application which is multi threaded,
    or which is linked to a library which is multi threaded.

    Action:

    Need clarification with respect to
    1. Is it correct to list fork as an async-signal safe
    interface, in a multi threaded scenario?

    2. Can the implementation be allowed to not call the atfor
    handlers, when fork is called from a signal handler? If the
    atfork handlers are not going to be called when fork is called
    in the signal handler, then they can not be called, even if
    fork is called in the newly created child before exec.

    3. If only async-signal safe functions are to be called from
    pthread_atfork handlers, then how will multi-threaded librarie
    protect themselves by the fork calls, made by single threaded
    applications linked to them?

Reported-by: KASAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2016-12-12 12:53:05 +01:00
Michael Kerrisk fb16ec3585 signal-safety.7: Note glibc deviations from POSIX requirements 
See https://bugzilla.kernel.org/show_bug.cgi?id=25292

Reported-by: KASAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2016-12-12 12:53:05 +01:00
Michael Kerrisk d1329af1f3 signal-safety.7, signal.7: Migrate discussion of async-signal-safe functions to new page 
Also:
* add more detail on changes across standards
* provide proper section cross references in function references

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2016-12-12 12:53:05 +01:00