Michael Kerrisk
d1a719857b
locale.1, memusage.1, pldd.1, _syscall.2, add_key.2, bind.2, bpf.2, chown.2, clone.2, copy_file_range.2, eventfd.2, execve.2, futex.2, getdents.2, getrlimit.2, ioctl_fat.2, ioctl_ns.2, kcmp.2, kexec_load.2, keyctl.2, listxattr.2, lseek.2, membarrier.2, memfd_create.2, mmap.2, mprotect.2, msgop.2, open_by_handle_at.2, perf_event_open.2, pipe.2, readdir.2, readlink.2, readv.2, recvmmsg.2, request_key.2, sched_setaffinity.2, seccomp.2, select.2, select_tut.2, sendmmsg.2, setns.2, signalfd.2, spu_run.2, stat.2, sysctl.2, tee.2, timer_create.2, timerfd_create.2, truncate.2, uname.2, unshare.2, userfaultfd.2, ustat.2, wait.2, CPU_SET.3, __ppc_get_timebase.3, argz_add.3, asprintf.3, backtrace.3, basename.3, bswap.3, bzero.3, cacos.3, cacosh.3, catan.3, catanh.3, catgets.3, clock_getcpuclockid.3, confstr.3, ctime.3, dl_iterate_phdr.3, dlinfo.3, duplocale.3, encrypt.3, end.3, endian.3, fgetws.3, fmemopen.3, fopencookie.3, fputws.3, frexp.3, ftw.3, get_nprocs_conf.3, get_phys_pages.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getgrouplist.3, getifaddrs.3, getline.3, getlogin.3, getopt.3, getpass.3, getprotoent_r.3, getpwnam.3, getservent_r.3, getsubopt.3, glob.3, gnu_get_libc_version.3, hsearch.3, if_nameindex.3, index.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, iswblank.3, iswspace.3, makecontext.3, mallinfo.3, malloc_hook.3, malloc_info.3, mallopt.3, matherr.3, mbrtowc.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, mcheck.3, memchr.3, mq_getattr.3, mq_notify.3, newlocale.3, nl_langinfo.3, offsetof.3, perror.3, posix_spawn.3, printf.3, pthread_attr_init.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_mutexattr_setrobust.3, pthread_setaffinity_np.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, qsort.3, rand.3, readdir.3, regex.3, rpmatch.3, rtime.3, scanf.3, sem_wait.3, setaliasent.3, setbuf.3, stpcpy.3, stpncpy.3, strcat.3, strchr.3, strcpy.3, strdup.3, strerror.3, strfromd.3, strftime.3, strlen.3, strnlen.3, strsep.3, strstr.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, termios.3, tsearch.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscat.3, wcscpy.3, wcslen.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wcsstr.3, wcstok.3, wcstombs.3, wcwidth.3, wprintf.3, console_codes.4, dsp56k.4, full.4, initrd.4, loop.4, vcs.4, charmap.5, core.5, elf.5, locale.5, proc.5, repertoiremap.5, sysfs.5, termcap.5, aio.7, bpf-helpers.7, cgroups.7, charsets.7, complex.7, fanotify.7, feature_test_macros.7, inotify.7, locale.7, man-pages.7, man.7, pkeys.7, pthreads.7, rtld-audit.7, sock_diag.7, unix.7, user_namespaces.7, utf-8.7: Use '\e' rather than '\\' to get a backslash
...
Quoting Branden:
*roff escape sequences may sometimes look like C escapes, but that
is misleading. *roff is in part a macro language and that means
recursive expansion to arbitrary depths.
You can get away with "\\" in a context where no macro expansion
is taking place, but try to spell a literal backslash this way in
the argument to a macro and you will likely be unhappy with
results.
Try viewing the attached file with "man -l".
"\e" is the preferred and portable way to get a portable "escape
literal" going back to CSTR #54 , the original Bell Labs troff
paper.
groff(7) discusses the issue:
\\ reduces to a single backslash; useful to delay its
interpretation as escape character in copy mode. For a
printable backslash, use \e, or even better \[rs], to be
independent from the current escape character.
As of groff 1.22.4, groff_man(7) does as well:
\e Widely used in man pages to represent a backslash output
glyph. It works reliably as long as the .ec request is
not used, which should never happen in man pages, and it
is slightly more portable than the more exact ‘\(rs’
(“reverse solidus”) escape sequence.
People not concerned with portability to extremely old troffs should
probably just use \(rs (or \[rs]), as it means "the backslash
glyph", not "the glyph corresponding to whatever the current escape
character is".
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2019-02-27 15:32:50 +01:00
Jann Horn
f58e9ed092
mmap.2: Fix description of treatment of the hint
...
The current manpage reads to me as if the kernel will always pick
a free space close to the requested address, but that's not the
case:
mmap(0x600000000000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0x600000000000
mmap(0x600000000000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0x7f5042859000
You can also see this in the various implementations of
->get_unmapped_area() - if the specified address isn't available,
the kernel basically ignores the hint (apart from the 5level
paging hack).
Clarify how this works a bit.
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2019-02-25 15:56:54 +01:00
Mike Rapoport
a2463bae6f
ioctl_userfaultfd.2, madvise.2, memfd_create.2, migrate_pages.2, mmap.2, shmget.2, subpage_prot.2, userfaultfd.2, malloc.3, proc.5, sysfs.5, tmpfs.5: Update paths for in-kernel memory management documentation files
...
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-11-17 07:29:53 +01:00
Michael Kerrisk
c3617f39b6
mmap.2: tfix
...
Reported-by: Thomas Posch <kernel.org@online.posch.name>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-11-01 18:23:33 +01:00
Michael Kerrisk
fa38cc321f
mmap.2: Minor rewording
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-08-26 13:29:58 +02:00
Elliott Hughes
3ee0a7f07e
mmap.2: Explicitly state that the fd can be closed
...
I regularly see excessive fd usage bugs (or even leaks) caused by
people who think they need to keep the fd open as long as the
mapping exists.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-08-26 13:14:33 +02:00
Michael Kerrisk
09b8afdc04
execve.2, fallocate.2, getrlimit.2, io_submit.2, membarrier.2, mmap.2, msgget.2, open.2, ptrace.2, readv.2, semget.2, shmget.2, shutdown.2, syscall.2, wait.2, wait4.2, crypt.3, encrypt.3, fseek.3, getcwd.3, makedev.3, pthread_create.3, puts.3, tsearch.3, elf.5, filesystems.5, group.5, passwd.5, sysfs.5, mount_namespaces.7, posixoptions.7, time.7, unix.7, vdso.7, xattr.7, ld.so.8: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-30 17:41:31 +02:00
Michael Kerrisk
56f85b84df
mmap.2: Minor wording improvements to text on MAP_FIXED hazard
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 09:39:10 +02:00
Michael Kerrisk
0949fa5efd
mmap.2: Further tweaks to mention of MAP_FIXED_NOREPLACE in MAP_FIXED notes
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 09:39:10 +02:00
Michael Kerrisk
49a8d3a176
mmap.2: Move the text on MAP_FIXED to NOTES
...
This text has become rather long, making it it somewhat
unwieldy in the discussion of the mmap() flags. Therefore,
move it to NOTES, with a pointer in DESCRIPTION referring
the reader to NOTES.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 09:39:10 +02:00
Michael Kerrisk
71c2db6a65
mmap.2: Further wording tweaks to the discussion of MAP_FIXED hazards
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 09:39:03 +02:00
Michael Kerrisk
2256fc0887
mmap.2: Minor wording fix
...
Change "extremely hazardous" to "hazardous". The former phrasing
is a little overwrought; on its own "hazardous" is enough to
convey the sense of danger.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 08:53:06 +02:00
Michael Kerrisk
56a033affa
mmap.2: Minor wording fixes to to text describing MAP_FIXED hazards
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 08:50:38 +02:00
Michael Kerrisk
fd859eb599
mmap.2: Simplify mention of MAP_FIXED_NOREPLACE in the discussion of MAP_FIXED
...
After discussions with Jann Horn and John Hubbard.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 08:44:24 +02:00
Michael Kerrisk
528cc762d9
mmap.2: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 08:38:50 +02:00
Michael Kerrisk
a8fd340325
mmap.2: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 08:23:14 +02:00
Michael Kerrisk
a6bf8e7e94
mmap.2: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 08:21:41 +02:00
Michael Kerrisk
08a239f387
mmap.2: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-13 08:21:41 +02:00
Jann Horn
da6ad3cd89
mmap.2: MAP_FIXED is okay if the address range has been reserved
...
Clarify that MAP_FIXED is appropriate if the specified address
range has been reserved using an existing mapping, but shouldn't
be used otherwise.
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 20:25:58 +02:00
Michael Kerrisk
5bc2d858e1
mmap.2: Clarify rationale of MAP_SYNC somewhat
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 20:18:58 +02:00
Michael Kerrisk
79da08c844
mmap.2: Minor tweaks to Jan Kara's patch
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 14:55:43 +02:00
Michael Kerrisk
b138773b1e
mmap.2: srcfix: rewrap source lines
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 14:50:28 +02:00
Jan Kara
d8aeb42ded
mmap.2: Add description of MAP_SHARED_VALIDATE and MAP_SYNC
...
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 14:37:00 +02:00
Michael Kerrisk
95b9ecbf9d
mmap.2: Explicitly mention MAP_FIXED_NOREPLACE in EEXIST description
...
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 10:08:17 +02:00
Michael Kerrisk
421508eba8
mmap.2: Minor wording fix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 10:03:04 +02:00
Michael Kerrisk
a7a21482a1
mmap.2: Add a little historical detail on the obsolete MAP_DENYWRITE
...
In Linux 2..0, do_mmap() had the following check:
if (flags & MAP_DENYWRITE) {
if (file->f_inode->i_writecount > 0)
return -ETXTBSY;
}
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 10:03:04 +02:00
Michael Kerrisk
0113b28739
mmap.2: Minor rewording of MAP_FIXED text
...
The paragraph break-up of the existing text was
somewhat unnatural.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 10:03:04 +02:00
Michael Kerrisk
73cb50e21b
mmap.2: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 10:03:04 +02:00
Michael Kerrisk
3a548c59d9
mmap.2: Minor tweaks to Michal Hocko's patch
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 10:03:04 +02:00
Michael Kerrisk
509935b7de
mmap.2: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 10:03:04 +02:00
Michael Kerrisk
007d7833b0
mmap.2: srcfix: rewrap source lines
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 10:03:04 +02:00
Michael Kerrisk
228d889fc7
mmap.2: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 10:03:04 +02:00
Michal Hocko
c6a51c0645
mmap.2: Document new MAP_FIXED_NOREPLACE flag
...
4.17+ kernels offer a new MAP_FIXED_NOREPLACE flag which allows
the caller to atomically probe for a given address range.
[wording heavily updated by John Hubbard]
Cowritten-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-04-12 10:02:58 +02:00
Michael Kerrisk
365a54c70b
mmap.2: Clarify that when addr==NULL, address chosen by kernel is page-aligned
...
Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-02-24 19:34:28 +01:00
Michael Kerrisk
db4e8e25b4
mmap.2: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-19 06:34:57 +01:00
Michael Kerrisk
c6bd0e7189
mmap.2: srcfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-19 06:33:09 +01:00
John Hubbard
3c778f69aa
mmap.2: MAP_FIXED updated documentation
...
One last thing: reading through this, I think it might need a
wording fix (this is my fault), in order to avoid implying that
brk() or malloc() use dlopen().
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-19 06:31:11 +01:00
Michael Kerrisk
87c8ded551
mmap.2: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-18 20:10:04 +01:00
Michael Kerrisk
30c8dbeba4
mmap.2: Update timestamp for Michal Hocko's review of Hohn Hubbard's patch
...
Reviewed-by: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-18 18:10:41 +01:00
Michael Kerrisk
33f01a061d
mmap.2: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-18 18:08:47 +01:00
Michael Kerrisk
62d5de6594
mmap.2: Remove mention of MAP_FIXED_SAFE
...
Let's wait until MAP_FIXED_SAFE is merged.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-18 18:05:17 +01:00
Michael Kerrisk
9b92bc1449
mmap.2: Minor wording fixes
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-18 18:04:28 +01:00
Michael Kerrisk
b9f34840c2
mmap.2: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-18 18:04:28 +01:00
Michael Kerrisk
e2da344f74
mmap.2: srcfix: rewrap source lines
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-18 18:04:28 +01:00
John Hubbard
04bb0b991d
mmap.2: MAP_FIXED updated documentation
...
-- Expand the documentation to discuss the hazards in
enough detail to allow avoiding them.
-- Mention the upcoming MAP_FIXED_SAFE flag.
-- Enhance the alignment requirement slightly.
CC: Michael Ellerman <mpe@ellerman.id.au>
CC: Jann Horn <jannh@google.com>
CC: Matthew Wilcox <willy@infradead.org>
CC: Michal Hocko <mhocko@kernel.org>
CC: Mike Rapoport <rppt@linux.vnet.ibm.com>
CC: Cyril Hrubis <chrubis@suse.cz>
CC: Michal Hocko <mhocko@suse.com>
CC: Pavel Machek <pavel@ucw.cz>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-18 17:52:59 +01:00
John Hubbard
ffa518803e
mmap.2: MAP_FIXED is no longer discouraged
...
MAP_FIXED has been widely used for a very long time, yet the man
page still claims that "the use of this option is discouraged".
The documentation assumes that "less portable" == "must be discouraged".
Instead of discouraging something that is so useful and widely used,
change the documentation to explain its limitations better.
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-12-05 22:27:08 +01:00
Michael Kerrisk
74f254908f
mmap.2: SEE ALSO: add ftruncate(2)
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-10-31 08:24:13 +01:00
Michael Kerrisk
c19250adee
mmap.2: Add explicit text noting that 'length' must be greater than 0
...
Currently, this detail is hidden in ERRORS. Make it clear in
the main text.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-10-31 08:21:43 +01:00
Michael Kerrisk
4b8c67d976
iconv.1, ldd.1, locale.1, localedef.1, memusage.1, memusagestat.1, mtrace.1, pldd.1, sprof.1, time.1, _syscall.2, add_key.2, alloc_hugepages.2, arch_prctl.2, bpf.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, 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, fanotify_init.2, fcntl.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_console.2, ioctl_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_getfsmap.2, ioctl_iflags.2, ioctl_list.2, ioctl_ns.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.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, 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, 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, readlink.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, signal.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, syscall.2, syscalls.2, sysctl.2, sysfs.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, uname.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vfork.2, vmsplice.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, acos.3, acosh.3, adjtime.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, backtrace.3, basename.3, bindresvport.3, bsd_signal.3, bsearch.3, bswap.3, btree.3, byteorder.3, bzero.3, canonicalize_file_name.3, carg.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cexp.3, cfree.3, clearenv.3, clock.3, clock_getcpuclockid.3, clog.3, clog10.3, clog2.3, cmsg.3, confstr.3, copysign.3, cos.3, cosh.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctime.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlerror.3, dlinfo.3, dlopen.3, dlsym.3, drand48.3, drand48_r.3, duplocale.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, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetc.3, fgetgrent.3, fgetpwent.3, finite.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fopen.3, fopencookie.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, frexp.3, fseek.3, fseeko.3, ftime.3, fts.3, ftw.3, futimes.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, 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, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.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, getutent.3, getwchar.3, glob.3, gnu_get_libc_version.3, grantpt.3, gsignal.3, hash.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, if_nameindex.3, if_nametoindex.3, ilogb.3, inet.3, inet_net_pton.3, inet_ntop.3, inet_pton.3, initgroups.3, insque.3, intro.3, isalpha.3, isgreater.3, j0.3, key_setsecret.3, killpg.3, ldexp.3, lgamma.3, lio_listio.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_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.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, mtrace.3, newlocale.3, nextafter.3, nextup.3, nl_langinfo.3, ntp_gettime.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, posix_spawn.3, pow.3, pow10.3, printf.3, profil.3, program_invocation_name.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_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_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, ptsname.3, putgrent.3, putpwent.3, qsort.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, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, rtime.3, scalb.3, scalbln.3, scandir.3, scanf.3, sched_getcpu.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_wait.3, setaliasent.3, setbuf.3, setenv.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigvec.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdin.3, strcasecmp.3, strcat.3, strchr.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfromd.3, strftime.3, strptime.3, strsignal.3, strstr.3, strtod.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, telldir.3, tempnam.3, termios.3, tgamma.3, timeradd.3, tmpnam.3, toupper.3, towlower.3, towupper.3, trunc.3, ttyslot.3, tzset.3, ualarm.3, ulimit.3, undocumented.3, unlocked_stdio.3, updwtmp.3, uselocale.3, usleep.3, wcrtomb.3, wcsdup.3, wcsnrtombs.3, wcsrtombs.3, wcstombs.3, wctob.3, wcwidth.3, wordexp.3, wprintf.3, xcrypt.3, xdr.3, y0.3, cciss.4, console_codes.4, dsp56k.4, fuse.4, hd.4, hpsa.4, initrd.4, intro.4, loop.4, random.4, rtc.4, sd.4, sk98lin.4, st.4, wavelan.4, acct.5, core.5, elf.5, filesystems.5, host.conf.5, hosts.5, locale.5, nologin.5, proc.5, resolv.conf.5, rpc.5, slabinfo.5, utmp.5, aio.7, arp.7, bootparam.7, capabilities.7, cgroup_namespaces.7, cgroups.7, charsets.7, cpuset.7, ddp.7, environ.7, epoll.7, fanotify.7, feature_test_macros.7, futex.7, inode.7, inotify.7, ip.7, ipv6.7, keyrings.7, locale.7, man-pages.7, man.7, math_error.7, mount_namespaces.7, mq_overview.7, namespaces.7, netdevice.7, netlink.7, packet.7, pipe.7, pkeys.7, pthreads.7, pty.7, raw.7, rtld-audit.7, rtnetlink.7, sched.7, session-keyring.7, signal.7, sock_diag.7, socket.7, spufs.7, suffixes.7, tcp.7, udp.7, udplite.7, unicode.7, units.7, unix.7, uri.7, user_namespaces.7, vdso.7, x25.7, xattr.7, iconvconfig.8, ld.so.8, ldconfig.8, sln.8: Update timestamps
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-09-15 12:44:56 +02:00
Jonas Grabber
c87d084b87
getrlimit.2, mmap.2, malloc.3: RLIMIT_DATA affects mmap (2) since Linux 4.7
...
Starting with Linux kernel 4.5 and 84638335900f1995
(mm: rework virtual memory accounting) RLIMIT_DATA affects
mmap(2). With d977d56ce5b3e88 (mm: warn about VmData over
RLIMIT_DATA) only warnings are emmitted when going over the
specified RLIMIT_DATA in 4.5.
As of 4.7 and f4fcd55841fc9 (mm: enable RLIMIT_DATA by default
with workaround for valgrind) going over RLIMIT_DATA through
mmap(2) is forbidden.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-09-15 09:33:02 +02:00