3804d39d06
mmap.2: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-12-16 15:27:58 +01:00
35deeb8703
bind.2, chmod.2, chown.2, chroot.2, clock_getres.2, clone.2, connect.2, dup.2, fallocate.2, get_mempolicy.2, getpeername.2, getpriority.2, getsockname.2, getsockopt.2, gettimeofday.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, kill.2, mbind.2, mmap.2, mount.2, mprotect.2, nfsservctl.2, nice.2, open.2, perf_event_open.2, pipe.2, pkey_alloc.2, prctl.2, ptrace.2, quotactl.2, remap_file_pages.2, sched_setscheduler.2, set_mempolicy.2, signal.2, signalfd.2, swapon.2, sync_file_range.2, syscalls.2, timer_create.2, timerfd_create.2, utime.2, utimensat.2, wait.2, atof.3, ctime.3, errno.3, fclose.3, fflush.3, insque.3, malloc_get_state.3, mallopt.3, mbsnrtowcs.3, mq_close.3, mq_open.3, mq_receive.3, mq_send.3, printf.3, pthread_attr_init.3, pthread_create.3, pthread_setaffinity_np.3, ptsname.3, remainder.3, strtod.3, tgamma.3, timegm.3, tmpnam.3, ttyname.3, console_ioctl.4, elf.5, filesystems.5, proc.5, utmp.5, capabilities.7, cgroups.7, credentials.7, ddp.7, feature_test_macros.7, fifo.7, inotify.7, libc.7, mount_namespaces.7, namespaces.7, netlink.7, pid_namespaces.7, pkeys.7, shm_overview.7, standards.7, uri.7, user_namespaces.7: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-12-12 10:45:24 +01:00
f5f4165105
mmap.2: srcfix: FIXME
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-12-05 16:07:12 +01:00
176b1a7665
mmap.2: Add (much) more detail on MAP_GROWSDOWN
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-21 11:06:41 +01:00
86f12eb091
mmap.2: wfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-21 11:06:35 +01:00
50efeef8ca
mmap.2: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-21 10:54:55 +01:00
3f06ade3af
mmap.2: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-11 09:08:31 +01:00
4e07c70f90
fallocate.2, fcntl.2, lseek.2, madvise.2, memfd_create.2, mmap.2, remap_file_pages.2, swapon.2, proc.5, cgroups.7, shm_overview.7, user_namespaces.7: Fix cross references to new tmpfs(5) page
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-07 16:21:41 +01:00
bf525e9050
mmap.2: Small improvement to description of MAP_SHARED
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See https://sourceware.org/bugzilla/show_bug.cgi?id=6887
Reported-by: Siward de Groot <siward@wanadoo.nl>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-08-17 08:09:28 +12:00
423cb9f7ff
mmap.2: Describe treatment of 'offset' for MAP_ANONYMOUS
...
The manpage claimed that the offset argument is ignored, and when
I interpreted that as "I don't need to set that register when
doing the syscall", I got failures. I was able to spot two reasons
for that:
What I probably ran into:
At least on x86-64, sys_mmap (in arch/x86/kernel/sys_x86_64.c)
always checks that the offset is page-aligned, even for
MAP_ANONYMOUS.
Another one, could probably trigger on 32-bit x86:
In do_mmap(), there is a check to ensure that pgoff together with
the allocation length won't cause an overflow, even for
MAP_ANONYMOUS.
Document that userspace should pass in zero, since that's
probably what everyone is doing already. (It would also be
possible to describe the constraints on the offset more
carefully, but zero works, and nobody should need to pass in
anything else.)
Signed-off-by: Jann Horn <jann@thejh.net>
2016-08-12 07:14:42 +12:00
038f51757a
mmap.2: Order ERRORS alphabetically
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-08-08 05:54:12 +10:00
bf7bc8b898
arch_prctl.2, execveat.2, fanotify_mark.2, fcntl.2, fork.2, madvise.2, mknod.2, mmap.2, modify_ldt.2, mount.2, open.2, prctl.2, ptrace.2, restart_syscall.2, seccomp.2, semop.2, set_thread_area.2, symlink.2, umount.2, unlink.2, error.3, getnetent.3, getprotoent.3, getservent.3, getutent.3, glob.3, login.3, setjmp.3, setnetgrent.3, wordexp.3, epoll.7: Remove section number from page self reference
...
Fix places where pages refer to the function that they describe
and include a section number in that reference. Such references
cause some HTML-rendering tools to create self-references in the
page.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-08-08 05:54:12 +10:00
3df541c0e6
ldd.1, localedef.1, add_key.2, chroot.2, clone.2, fork.2, futex.2, get_mempolicy.2, get_robust_list.2, getitimer.2, getpriority.2, ioctl.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, kcmp.2, kill.2, lookup_dcookie.2, mmap.2, mount.2, open.2, pciconfig_read.2, perf_event_open.2, prctl.2, process_vm_readv.2, ptrace.2, quotactl.2, recv.2, setfsgid.2, setfsuid.2, sysinfo.2, umask.2, umount.2, unshare.2, utimensat.2, wait.2, assert.3, fmax.3, fmin.3, getauxval.3, inet_pton.3, malloc_hook.3, memmem.3, mkdtemp.3, mktemp.3, printf.3, strcasecmp.3, strcat.3, strtoul.3, strxfrm.3, console_codes.4, console_ioctl.4, lirc.4, tty.4, vcs.4, charmap.5, elf.5, locale.5, proc.5, repertoiremap.5, utmp.5, capabilities.7, cgroup_namespaces.7, cgroups.7, charsets.7, cp1251.7, cp1252.7, credentials.7, feature_test_macros.7, iso_8859-1.7, iso_8859-15.7, iso_8859-5.7, koi8-r.7, koi8-u.7, man-pages.7, mount_namespaces.7, namespaces.7, netlink.7, pid_namespaces.7, unix.7, user_namespaces.7, utf-8.7: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-07-17 18:10:19 +02:00
329ad27142
acct.2, chmod.2, fcntl.2, mmap.2, mprotect.2, rmdir.2, times.2: tfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-06-26 13:08:52 +02:00
4014230990
mmap.2: EXAMPLE: for completeness, add munmap() and close() calls
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Reported-by: Rahul Bedarkar <rahulbedarkar89@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-06-03 06:53:41 -05:00
979867082b
locale.1, localedef.1, _exit.2, accept.2, access.2, acct.2, adjtimex.2, bdflush.2, bind.2, bpf.2, brk.2, chdir.2, chmod.2, chown.2, chroot.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_ctl.2, eventfd.2, execve.2, fallocate.2, fanotify_init.2, fcntl.2, flock.2, fork.2, fsync.2, futex.2, get_kernel_syms.2, getdomainname.2, getgroups.2, gethostname.2, getpagesize.2, getpeername.2, getsid.2, getsockname.2, getsockopt.2, gettimeofday.2, init_module.2, ioctl.2, ioctl_list.2, ioperm.2, iopl.2, kexec_load.2, kill.2, killpg.2, link.2, listen.2, llseek.2, lseek.2, madvise.2, memfd_create.2, mincore.2, mkdir.2, mknod.2, mmap.2, mount.2, nanosleep.2, nice.2, open.2, personality.2, pipe.2, poll.2, posix_fadvise.2, read.2, readahead.2, readlink.2, readv.2, recv.2, recvmmsg.2, rename.2, request_key.2, sched_setaffinity.2, sched_setattr.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendfile.2, sendmmsg.2, seteuid.2, setns.2, setpgid.2, setreuid.2, shutdown.2, sigaction.2, sigaltstack.2, signal.2, signalfd.2, sigpending.2, sigprocmask.2, sigsuspend.2, socketpair.2, splice.2, stat.2, statfs.2, stime.2, symlink.2, sync.2, syscall.2, syscalls.2, times.2, truncate.2, unlink.2, unshare.2, uselib.2, utimensat.2, vfork.2, vhangup.2, wait.2, wait4.2, write.2, a64l.3, abs.3, acos.3, acosh.3, addseverity.3, adjtime.3, aio_read.3, aio_write.3, asin.3, asinh.3, atan.3, atan2.3, atanh.3, atoi.3, backtrace.3, cbrt.3, ceil.3, cfree.3, clearenv.3, clock_getcpuclockid.3, clog10.3, cmsg.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, daemon.3, dirfd.3, div.3, dl_iterate_phdr.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, endian.3, erf.3, erfc.3, errno.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, fmin.3, fmod.3, fopen.3, fpclassify.3, frexp.3, fseeko.3, fts.3, futimes.3, fwide.3, gamma.3, gcvt.3, getaddrinfo.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getline.3, getloadavg.3, getmntent.3, getnameinfo.3, getnetent_r.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, getutent.3, getw.3, gsignal.3, hypot.3, ilogb.3, inet.3, initgroups.3, insque.3, isalpha.3, isgreater.3, iswblank.3, j0.3, ldexp.3, lgamma.3, lio_listio.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, makedev.3, matherr.3, mbsnrtowcs.3, mkdtemp.3, mkfifo.3, mkstemp.3, mktemp.3, modf.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_receive.3, mq_send.3, nan.3, nextafter.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, posix_spawn.3, pow.3, printf.3, profil.3, psignal.3, pthread_attr_setstack.3, pthread_setaffinity_np.3, putenv.3, putpwent.3, qecvt.3, rand.3, random.3, random_r.3, rcmd.3, readdir.3, realpath.3, remainder.3, remquo.3, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, scalb.3, scalbln.3, scandir.3, scanf.3, seekdir.3, sem_wait.3, setbuf.3, setenv.3, setjmp.3, setnetgrent.3, siginterrupt.3, signbit.3, significand.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stpcpy.3, stpncpy.3, strdup.3, strerror.3, strftime.3, strlen.3, strnlen.3, strsep.3, strsignal.3, strtod.3, strtok.3, strtol.3, strtoul.3, syslog.3, system.3, tan.3, tanh.3, telldir.3, tempnam.3, termios.3, tgamma.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, trunc.3, ttyslot.3, tzset.3, ualarm.3, unlocked_stdio.3, usleep.3, wcpcpy.3, wcpncpy.3, wcscasecmp.3, wcsdup.3, wcsncasecmp.3, wcsnlen.3, wcsnrtombs.3, wprintf.3, y0.3, pts.4, st.4, tty_ioctl.4, elf.5, gai.conf.5, group.5, locale.5, nsswitch.conf.5, proc.5, utmp.5, aio.7, capabilities.7, credentials.7, environ.7, epoll.7, fanotify.7, feature_test_macros.7, inotify.7, ip.7, mq_overview.7, namespaces.7, pipe.7, signal.7, socket.7, standards.7, svipc.7, symlink.7, time.7, unicode.7, unix.7: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-03-15 17:30:43 +13:00
f8619b6a26
killpg.2, mknod.2, mmap.2, nice.2, readlink.2, seteuid.2, setpgid.2, setreuid.2, sigaltstack.2, symlink.2, sync.2, truncate.2, vfork.2, wait.2: Update FTM requirements (mainly _DEFAULT_SOURCE)
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-03-01 20:01:04 +01:00
29b41e747f
accept.2, acct.2, bind.2, clock_getres.2, connect.2, dup.2, epoll_create.2, eventfd.2, execve.2, fanotify_init.2, fcntl.2, fork.2, futex.2, get_robust_list.2, getcpu.2, getpeername.2, getrlimit.2, getsockname.2, getsockopt.2, gettimeofday.2, inotify_init.2, listen.2, membarrier.2, memfd_create.2, mlock.2, mmap.2, personality.2, pipe.2, poll.2, recv.2, send.2, sendfile.2, shmget.2, shutdown.2, sigreturn.2, socket.2, socketcall.2, socketpair.2, spu_create.2, swapon.2, time.2, timerfd_create.2, uselib.2, dlerror.3, dlopen.3, drand48.3, errno.3, fnmatch.3, getgrent.3, getgrnam.3, getlogin.3, getpwent.3, getpwnam.3, iconv.3, mq_open.3, opendir.3, random_r.3, sem_open.3, shm_open.3, tmpfile.3, tzset.3, random.4, fanotify.7, futex.7, vdso.7, ld.so.8: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-12-29 13:48:42 +01:00
e258766bf4
accept.2, acct.2, epoll_create.2, execve.2, futex.2, inotify_init.2, mmap.2, open.2, pipe.2, shmget.2, socket.2, socketpair.2, spu_create.2, swapon.2, uselib.2, getgrent.3, getgrnam.3, getlogin.3, getpwent.3, getpwnam.3, mq_open.3, opendir.3, sem_open.3, shm_open.3, tmpfile.3, fanotify.7: ERRORS: standardize text for ENFILE error
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-12-27 17:10:23 +01:00
460495ca58
ldd.1, sprof.1, accept.2, alarm.2, bind.2, chdir.2, clock_nanosleep.2, close.2, connect.2, dup.2, execve.2, fsync.2, getgid.2, getpeername.2, getsid.2, getsockname.2, getsockopt.2, getuid.2, io_getevents.2, kill.2, listen.2, lseek.2, mmap.2, msgctl.2, msgget.2, msgop.2, msync.2, nanosleep.2, nice.2, pause.2, pipe.2, rmdir.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, select_tut.2, semctl.2, semop.2, setsid.2, shmctl.2, shmget.2, shmop.2, shutdown.2, sigaction.2, signal.2, socketpair.2, sync.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, times.2, truncate.2, umask.2, MB_CUR_MAX.3, a64l.3, abs.3, assert.3, atexit.3, atof.3, atoi.3, basename.3, bsearch.3, btowc.3, byteorder.3, catgets.3, catopen.3, clock.3, clock_getcpuclockid.3, closedir.3, confstr.3, crypt.3, ctermid.3, difftime.3, div.3, dladdr.3, dlerror.3, dlinfo.3, dlopen.3, dlsym.3, drand48.3, encrypt.3, exit.3, fclose.3, ffs.3, fgetc.3, fgetwc.3, fgetws.3, flockfile.3, fmtmsg.3, fnmatch.3, fopen.3, fpathconf.3, fpclassify.3, fputwc.3, fputws.3, fseek.3, fseeko.3, ftok.3, fwide.3, getdate.3, getenv.3, getgrent.3, getgrnam.3, gethostid.3, getlogin.3, getnetent.3, getopt.3, getpwent.3, getpwnam.3, getsubopt.3, getutent.3, getwchar.3, grantpt.3, hsearch.3, iconv.3, iconv_close.3, iconv_open.3, if_nameindex.3, inet.3, inet_ntop.3, inet_pton.3, insque.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, lockf.3, longjmp.3, lsearch.3, malloc.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, memccpy.3, memchr.3, memcmp.3, memmove.3, memset.3, mktemp.3, mq_close.3, mq_getattr.3, mq_receive.3, mq_send.3, mq_unlink.3, offsetof.3, popen.3, posix_memalign.3, posix_openpt.3, printf.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_setstacksize.3, pthread_equal.3, pthread_exit.3, pthread_getcpuclockid.3, pthread_kill.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_testcancel.3, ptsname.3, putenv.3, puts.3, putwchar.3, qsort.3, raise.3, random.3, readdir.3, regex.3, remove.3, rewinddir.3, seekdir.3, sem_destroy.3, sem_getvalue.3, sem_unlink.3, sem_wait.3, setenv.3, setjmp.3, setlocale.3, setlogmask.3, signbit.3, sigpause.3, sigset.3, sigsetops.3, sigwait.3, sleep.3, sockatmark.3, statvfs.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strlen.3, strpbrk.3, strptime.3, strspn.3, strstr.3, strtod.3, strtoimax.3, strtok.3, strtol.3, strtoul.3, strxfrm.3, swab.3, sysconf.3, system.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tmpfile.3, towctrans.3, tsearch.3, ttyname.3, tzset.3, ungetwc.3, unlocked_stdio.3, unlockpt.3, wcrtomb.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcslen.3, wcsncat.3, wcsncmp.3, wcsncpy.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, fanotify.7, mq_overview.7, nptl.7, sem_overview.7, shm_overview.7, sigevent.7, symlink.7, ld.so.8: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-08-08 18:21:22 +02:00
78cdbef700
mmap.2: CONFORMING TO: add POSIX.1-2008
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-07-24 09:32:04 +02:00
f1461fe180
mmap.2: Describe mmap()/munmap() argument requirements for huge-page mappings
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Acked-by: David Rientjes <rientjes@google.com>
Reported-by: David Rientjes <rientjes@google.com>
Reported-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-07-24 08:56:27 +02:00
0f319769bc
mmap.2: Move discussion of timestamps to NOTES
...
A straight move; no changes to the content.
This content is better placed in NOTES.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-07-24 08:56:23 +02:00
0e824bcb97
mmap.2: Note that 'length' need not be a page-size multiple for munmap()
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-07-24 08:49:54 +02:00
ca90e95aa3
mmap.2: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-07-24 08:49:54 +02:00
c0b897882c
mmap.2: ERRORS: point out that ENOMEM can occur even for munmap()
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-07-22 09:13:00 +02:00
74309bedf2
mmap.2: Minor wording fix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-07-22 09:09:12 +02:00
911f1c7ace
mmap.2: Minor wording fixes
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-07-22 09:08:19 +02:00
88b001ffe8
mmap.2: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-07-22 09:04:55 +02:00
bbebbb6d56
mmap2: Clarify MAP_POPULATE
...
David Rientjes has noticed that MAP_POPULATE wording might promise
much more than the kernel actually provides and intend to provide.
The primary usage of the flag is to pre-fault the range. There is
no guarantee that no major faults will happen later on. The pages
might have been reclaimed by the time the process tries to access
them.
Reviewed-by: Eric B Munson <emunson@akamai.com>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-05-14 15:34:06 +02:00
7e3786bcdc
mmap.2: Clarify MAP_LOCKED semantics
...
MAP_LOCKED had a subtly different semantic from mmap(2)+mlock(2)
since it has been introduced.
mlock(2) fails if the memory range cannot get populated to
guarantee that no future major faults will happen on the range.
mmap(MAP_LOCKED) on the other hand silently succeeds even if
the range was populated only partially.
Fixing this subtle difference in the kernel is rather awkward
because the memory population happens after mm locks have been
dropped and so the cleanup before returning failure (munlock)
could operate on something else than the originally mapped area.
E.g. speculative userspace page fault handler catching SEGV and
doing mmap(fault_addr, MAP_FIXED|MAP_LOCKED) might discard portion
of a racing mmap and lead to lost data. Although it is not clear
whether such a usage would be valid, mmap page doesn't explicitly
describe requirements for threaded applications so we cannot
exclude this possibility.
This patch makes the semantic of MAP_LOCKED explicit and suggests
using mmap + mlock as the only way to guarantee no later major
page faults.
Reviewed-by: Eric B Munson <emunson@akamai.com>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-05-14 15:31:11 +02:00
0722a578ed
_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 13:10:04 +02:00
67d2c6873c
add_key.2, chown.2, epoll_ctl.2, epoll_wait.2, execve.2, fcntl.2, get_mempolicy.2, getxattr.2, ioctl.2, keyctl.2, listxattr.2, mkdir.2, mknod.2, mmap.2, msync.2, nfsservctl.2, open.2, prctl.2, removexattr.2, request_key.2, sendfile.2, set_mempolicy.2, setxattr.2, shmget.2, shutdown.2, sigaction.2, syslog.2, truncate.2, umask.2, CPU_SET.3, atexit.3, bsearch.3, cmsg.3, err.3, gethostid.3, getmntent.3, getopt.3, iconv_close.3, inet_ntop.3, longjmp.3, lsearch.3, mcheck.3, on_exit.3, putpwent.3, regex.3, resolver.3, setbuf.3, setjmp.3, setlocale.3, setlogmask.3, sleep.3, strsignal.3, sysconf.3, undocumented.3, tty_ioctl.4, proc.5, resolv.conf.5, tzfile.5, aio.7, bootparam.7, capabilities.7, fanotify.7, inotify.7, ip.7, packet.7, pthreads.7, raw.7, signal.7, socket.7, unix.7, ld.so.8, nscd.8: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-05-07 08:26:32 +02:00
5d2038b6a8
mmap.2: Document MAP_HUGE_2MB, MAP_HUGE_1GB, and MAP_HUGE_SHIFT
...
Reported-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-05-06 17:41:21 +02:00
72e8bdae36
mmap.2: Remove text that implies that munmap() syncs MAP_SHARED mapping to file
...
The existing text in this page:
MAP_SHARED Share this mapping. Updates to the mapping
are visible to other processes that map this
file, and are carried through to the underly‐
ing file. The file may not actually be
updated until msync(2) or munmap() is called.
implies that munmap() will sync the mapping to the underlying
file. POSIX doesn't require this, and some light reading of the
code and some light testing (fsync() after munmap() of a large
file) also indicates that Linux doesn't do this.
See also this mail thread:
Subject: munmap, msync: synchronization
Newsgroups: gmane.linux.man
Date: 2014-04-20 10:28:40 GMT
http://thread.gmane.org/gmane.linux.man/5548
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-05-04 20:04:33 +02:00
80691a91ce
mmap.2: Minor reworking of RETURN VALUE text
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-05-04 16:43:25 +02:00
fe0fefbff3
mmap.2, 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, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atof.3, atoi.3, backtrace.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.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, ceil.3, cfree.3, cimag.3, clock_getcpuclockid.3, clog.3, clog10.3, closedir.3, confstr.3, conj.3, copysign.3, cos.3, cosh.3, cpow.3, cproj.3, creal.3, crypt.3, ctermid.3, daemon.3, des_crypt.3, difftime.3, dirfd.3, div.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, envz_add.3, erf.3, erfc.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, fflush.3, ffs.3, fgetc.3, fgetwc.3, fgetws.3, finite.3, flockfile.3, floor.3, fma.3, fmax.3, fmin.3, fmod.3, fmtmsg.3, fnmatch.3, fopen.3, fopencookie.3, fpclassify.3, fread.3, frexp.3, ftime.3, ftok.3, futimes.3, gamma.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrnam.3, getgrouplist.3, getloadavg.3, getlogin.3, getopt.3, getpass.3, getpt.3, getpwent.3, getpwnam.3, gets.3, getsubopt.3, getttyent.3, getusershell.3, getutmp.3, getw.3, gnu_get_libc_version.3, grantpt.3, hsearch.3, iconv.3, iconv_open.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_pton.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, ldexp.3, lio_listio.3, localeconv.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, lseek64.3, makecontext.3, makedev.3, malloc.3, malloc_usable_size.3, matherr.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.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, mkstemp.3, modf.3, mq_close.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, nan.3, nextafter.3, nl_langinfo.3, opendir.3, posix_fallocate.3, posix_openpt.3, pow.3, pow10.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_equal.3, pthread_exit.3, pthread_getcpuclockid.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_yield.3, ptsname.3, putenv.3, puts.3, putwchar.3, qecvt.3, raise.3, rand.3, random.3, random_r.3, re_comp.3, readdir.3, realpath.3, regex.3, remainder.3, remove.3, remquo.3, rewinddir.3, rexec.3, rint.3, round.3, rtime.3, scalb.3, scalbln.3, sched_getcpu.3, seekdir.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_post.3, sem_unlink.3, sem_wait.3, setbuf.3, setenv.3, siginterrupt.3, signbit.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sincos.3, sinh.3, sockatmark.3, sqrt.3, stdarg.3, stdio_ext.3, stpcpy.3, stpncpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcpy.3, strerror.3, strfmon.3, strfry.3, strftime.3, strlen.3, strnlen.3, strpbrk.3, strptime.3, strsep.3, strspn.3, strstr.3, strtod.3, strtoimax.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, termios.3, tgamma.3, timegm.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, towctrans.3, towlower.3, towupper.3, trunc.3, tsearch.3, ttyname.3, ttyslot.3, ualarm.3, ungetwc.3, unlockpt.3, usleep.3, wcpcpy.3, wcpncpy.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, wcspbrk.3, wcsrchr.3, wcsspn.3, wcsstr.3, wcstoimax.3, wcstok.3, wcswidth.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, y0.3, attributes.7, man-pages.7, standards.7: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-03-02 16:12:18 +01:00
8fddf95ad5
mmap.2: ATTRIBUTES: Note functions that are thread-safe
...
The function mmap() and munmap() are thread safe.
Signed-off-by: Ma Shimiao <mashimiao.fnst@cn.fujitsu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-02-27 14:07:56 +01:00
487c2f050d
mmap.2: grfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-02-21 08:32:11 +01:00
8392a3b33f
_exit.2, dup.2, execve.2, execveat.2, fallocate.2, fcntl.2, get_robust_list.2, getrlimit.2, mbind.2, memfd_create.2, mmap.2, open.2, ptrace.2, readv.2, select.2, sigaction.2, syscall.2, syscalls.2, truncate.2, utimensat.2, write.2, errno.3, exec.3, fclose.3, fexecve.3, fmemopen.3, fopencookie.3, getgrent_r.3, getline.3, getmntent.3, getpw.3, getpwent_r.3, getspnam.3, malloc_info.3, posix_fallocate.3, putgrent.3, shm_open.3, locale.5, proc.5: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-01-22 23:29:25 +01:00
fbab10e5d6
fallocate.2, mmap.2, open.2, truncate.2, write.2: ERRORS: add EPERM for operation denied by file seal
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-01-19 10:35:33 +01:00
c4d76cd9ab
mmap.2, shmget.2, shm_open.3: SEE ALSO: add memfd_create(2)
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-01-19 10:35:32 +01:00
9af134cdeb
getrlimit.2, mmap.2, stat.2, unimplemented.2, dbopen.3, ecvt_r.3, fopen.3, fts.3, getcontext.3, qecvt.3, ip.7, ld.so.8: grfix: Add Oxford comma
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2014-09-01 17:57:07 +02:00
8980a50087
access.2, bdflush.2, bind.2, brk.2, chmod.2, chown.2, clone.2, epoll_wait.2, execve.2, fsync.2, getgroups.2, gethostname.2, getpagesize.2, getpriority.2, getrlimit.2, ioperm.2, kexec_load.2, link.2, mkdir.2, mmap.2, msgop.2, perf_event_open.2, process_vm_readv.2, ptrace.2, readlink.2, readv.2, recv.2, rename.2, sched_setaffinity.2, select.2, send.2, seteuid.2, signal.2, sigwaitinfo.2, stat.2, symlink.2, sync.2, sync_file_range.2, sysinfo.2, timer_create.2, uname.2, unlink.2, utime.2, wait.2, abs.3, atoi.3, catopen.3, cerf.3, cexp2.3, clearenv.3, clog2.3, ctime.3, des_crypt.3, ecvt.3, fgetgrent.3, flockfile.3, fseeko.3, ftime.3, ftok.3, ftw.3, getauxval.3, getcwd.3, getdtablesize.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, getline.3, getpass.3, getutent.3, glob.3, insque.3, lseek64.3, memmem.3, mkstemp.3, mktemp.3, on_exit.3, openpty.3, putenv.3, qecvt.3, realpath.3, remove.3, setbuf.3, sigpause.3, strftime.3, strptime.3, strstr.3, strtod.3, tzset.3, updwtmp.3, xcrypt.3, core.5, utmp.5, capabilities.7, charsets.7, environ.7, ipv6.7, man-pages.7, packet.7, vdso.7: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2014-08-19 11:55:41 -05:00
35c189fbd6
mmap.2: NOTES: add "C library/kernel ABI differences" subheading
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2014-08-18 17:01:47 -05:00
b8dbf73de8
bdflush.2, fsync.2, mmap.2, open.2, perf_event_open.2, sync.2, syscall.2, fmemopen.3, getaddrinfo.3, getline.3, mq_notify.3, offsetof.3, aio.7, symlink.7: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2014-04-06 08:47:35 +02:00
5e7c71f6ac
mmap.2: The file descriptor for a file mapping must be readable
...
There is no difference between MAP_SHARED and MAP_PRIVATE.
do_mmap_pgoff()
switch (flags & MAP_TYPE) {
case MAP_SHARED:
...
/* fall through */
case MAP_PRIVATE:
if (!(file->f_mode & FMODE_READ))
return -EACCES;
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2014-04-04 13:25:08 +02:00
76c637e18c
getcpu.2, getunwind.2, kcmp.2, mmap.2, perf_event_open.2, perfmonctl.2, quotactl.2, restart_syscall.2, btree.3, dbopen.3, hash.3, recno.3, sched_getcpu.3, elf.5, bootparam.7, hier.7, netdevice.7, rtnetlink.7: wfix: "xxxx specific" ==> "xxxx-specific"
2014-01-11 06:16:28 +13:00
f30b741526
chown.2, clone.2, mmap.2, pipe.2, ftw.3, mq_notify.3: Add "Program source" subheading under EXAMPLE
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2014-01-05 13:30:41 +13:00
9ee4a2b6ec
intro.1, time.1, access.2, acct.2, alloc_hugepages.2, bind.2, chdir.2, chmod.2, chown.2, chroot.2, clone.2, close.2, execve.2, fallocate.2, fcntl.2, getdents.2, getrusage.2, getxattr.2, init_module.2, inotify_add_watch.2, ioprio_set.2, kcmp.2, link.2, listxattr.2, lseek.2, madvise.2, mkdir.2, mknod.2, mmap.2, mount.2, move_pages.2, msgctl.2, nfsservctl.2, open.2, pivot_root.2, quotactl.2, read.2, readlink.2, removexattr.2, rename.2, rmdir.2, semctl.2, setfsgid.2, setfsuid.2, setresuid.2, setuid.2, setup.2, setxattr.2, shmctl.2, splice.2, spu_create.2, stat.2, statfs.2, swapon.2, symlink.2, sync.2, sync_file_range.2, sysfs.2, truncate.2, umount.2, unlink.2, unshare.2, ustat.2, utime.2, utimensat.2, write.2, btree.3, errno.3, fexecve.3, ftw.3, futimes.3, get_nprocs_conf.3, getcwd.3, getdirentries.3, getmntent.3, glob.3, mkfifo.3, mq_open.3, readdir.3, realpath.3, recno.3, remove.3, sem_open.3, shm_open.3, statvfs.3, sysconf.3, telldir.3, tmpfile.3, cciss.4, initrd.4, pts.4, sk98lin.4, vcs.4, core.5, filesystems.5, proc.5, boot.7, bootparam.7, capabilities.7, cpuset.7, credentials.7, feature_test_macros.7, fifo.7, hier.7, inotify.7, intro.7, mq_overview.7, path_resolution.7, pipe.7, sem_overview.7, shm_overview.7, spufs.7, symlink.7, unix.7, uri.7, sync.8: Global fix: s/file system/filesystem/
...
Notwithstanding 24d01c530c
2013-08-08 10:07:57 +02:00
Michael Kerrisk