6e00b7a858
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 02:44:07 +02:00
dd0ccf19b2
proc.5: Remove duplicated /proc/[pid]/gid_map entry
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-08-18 01:38:14 +02:00
8273bf01f9
proc.5: Add /proc/PID/projid_map, referring reader to user_namespaces(7)
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-08-18 01:38:14 +02:00
525a8b5461
fanotify_mark.2, link.2, mount.2, umount.2, proc.5, cgroups.7, fanotify.7: Terminology clean-up: "mount point" ==> "mount"
...
Many times, these pages use the terminology "mount point", where
"mount" would be better. A "mount point" is the location at which
a mount is attached. A "mount" is an association between a
filesystem and a mount point.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-08-18 01:38:14 +02:00
bd9aa1b762
proc.5: tfix
...
Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-08-08 01:02:32 +02:00
a45168bfb1
proc.5: tfix
...
Reported-by: Helge Kreutzmann <debian@helgefjell.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-07-26 01:31:54 +02:00
6cee0ddeb4
proc.5: Document /proc/sys/vm/sysctl_hugetlb_shm_group
...
As a deprecated feature, it appears that the RLIMIT_MEMLOCK
can also be used to permit huge page allocation, but let's
not document that for now.
In the Linux 5.12, see fs/hugetlbfs/inode.c.
static int can_do_hugetlb_shm(void)
{
kgid_t shm_group;
shm_group = make_kgid(&init_user_ns, sysctl_hugetlb_shm_group);
return capable(CAP_IPC_LOCK) || in_group_p(shm_group);
}
...
struct file *hugetlb_file_setup(const char *name, size_t size,
vm_flags_t acctflag, struct user_struct **user,
int creat_flags, int page_size_log)
{
...
if (creat_flags == HUGETLB_SHMFS_INODE && !can_do_hugetlb_shm()) {
*user = current_user();
if (user_shm_lock(size, *user)) {
task_lock(current);
pr_warn_once("%s (%d): Using mlock ulimits for SHM_HUGETLB is deprecated\n",
current->comm, current->pid);
task_unlock(current);
} else {
*user = NULL;
return ERR_PTR(-EPERM);
}
}
...
}
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-05-17 15:38:39 +12:00
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
cd415e7364
Various pages: use "\-" to generate real minus in circumstances where appropriate
...
Use \- for math formulas, pathnames, manual page cross references,
etc.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-01-21 10:53:59 +01:00
b49c2acb42
Various pages: use real minus signs in pathnames
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-01-21 10:29:14 +01:00
735334d454
Various pages: tfix (Oxford comma)
...
Discovered using:
git grep -lE '^[^.].*, [^ ]*[^,] (or|and)\>'
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-01-09 11:02:33 +01:00
2c916a1d3c
Various pages: Remove redundant "\\ " to escape spaces
...
Reported-by: Alejandro Colomar (man-pages) <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-01-08 13:42:27 +01:00
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
d556548bf4
getent.1, fanotify_mark.2, fcntl.2, futex.2, membarrier.2, mmap.2, mount.2, msgctl.2, readv.2, semctl.2, set_mempolicy.2, shmctl.2, syscalls.2, abs.3, bstring.3, btree.3, ctime.3, drand48.3, fgetc.3, fopen.3, gethostbyname.3, getnetent.3, getprotoent.3, getservent.3, INFINITY.3, __ppc_set_ppr_med.3, inet.3, j0.3, makecontext.3, printf.3, puts.3, resolver.3, sigsetops.3, elf.5, nscd.conf.5, proc.5, inotify.7, ipv6.7, spufs.7, system_data_types.7: Use Oxford comma
...
Found using:
pcregrep -rnM "^\.[B|I]R .*,\n\.[B|I].*[^,]\nand" man? |grep ^man |sort
Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-11-15 21:30:30 +01:00
13648a9cfa
proc.5: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-11-06 12:30:20 +01:00
20e43cd694
proc.5: Document inaccurate RSS due to SPLIT_RSS_COUNTING
...
[mtk: Manually applied patch, because of conflicts with other
merged changes; also added an edit suggested by Jann; see the
thread at
https://lore.kernel.org/linux-man/20201012114940.1317510-1-jannh@google.com/ ]
Since 34e55232e59f7b19050267a05ff1226e5cd122a5 (introduced back in
v2.6.34), Linux uses per-thread RSS counters to reduce cache
contention on the per-mm counters. With a 4K page size, that means
that you can end up with the counters off by up to 252KiB per
thread.
Example:
$ cat rsstest.c
#include <stdlib.h>
#include <err.h>
#include <stdio.h>
#include <signal.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/eventfd.h>
#include <sys/prctl.h>
void dump(int pid) {
char cmd[1000];
sprintf(cmd,
"grep '^VmRSS' /proc/%d/status;"
"grep '^Rss:' /proc/%d/smaps_rollup;"
"echo",
pid, pid
);
system(cmd);
}
int main(void) {
eventfd_t dummy;
int child_wait = eventfd(0, EFD_SEMAPHORE|EFD_CLOEXEC);
int child_resume = eventfd(0, EFD_SEMAPHORE|EFD_CLOEXEC);
if (child_wait == -1 || child_resume == -1) err(1, "eventfd");
pid_t child = fork();
if (child == -1) err(1, "fork");
if (child == 0) {
if (prctl(PR_SET_PDEATHSIG, SIGKILL)) err(1, "PDEATHSIG");
if (getppid() == 1) exit(0);
char *mapping = mmap(NULL, 80 * 0x1000, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
eventfd_write(child_wait, 1);
eventfd_read(child_resume, &dummy);
for (int i=0; i<40; i++) mapping[0x1000 * i] = 1;
eventfd_write(child_wait, 1);
eventfd_read(child_resume, &dummy);
for (int i=40; i<80; i++) mapping[0x1000 * i] = 1;
eventfd_write(child_wait, 1);
eventfd_read(child_resume, &dummy);
exit(0);
}
eventfd_read(child_wait, &dummy);
dump(child);
eventfd_write(child_resume, 1);
eventfd_read(child_wait, &dummy);
dump(child);
eventfd_write(child_resume, 1);
eventfd_read(child_wait, &dummy);
dump(child);
eventfd_write(child_resume, 1);
exit(0);
}
$ gcc -o rsstest rsstest.c && ./rsstest
VmRSS: 68 kB
Rss: 616 kB
VmRSS: 68 kB
Rss: 776 kB
VmRSS: 812 kB
Rss: 936 kB
$
Let's document that those counters aren't entirely accurate.
Reported-by: Mark Mossberg <mark.mossberg@gmail.com>
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-10-27 14:52:08 +01:00
14948ad6ec
proc.5: Minor fixes
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-10-27 14:51:44 +01:00
bd13ace0c5
proc.5: ffix: use a hanging list as is done elsewhere in the page
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-10-27 14:51:44 +01:00
167f94b707
proc.5: Update capability requirements for accessing /proc/[pid]/map_files
...
The requirements changed with kernel commit 12886f8ab10ce6.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-10-27 14:51:44 +01:00
11fd5e7c2a
membarrier.2, openat2.2, insque.3, proc.5, tzfile.5, hier.7: Minor grammar fix
...
Don't hyphenate after adjective ending in "ly". See, for example:
https://www.dragoman.ist/compound-modifiers-with-words-ending-in-ly/
https://www.merriam-webster.com/words-at-play/6-common-hypercorrections-and-how-to-avoid-them/between-you-and-i
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-10-25 13:12:57 +01:00
9ae9894c8e
proc.5: wfix
...
In the section for /proc/[pid]/smaps, the description of field
ProtectionKey occurs twice: both before and after the description of
VmFlags.
Changes made by this patch:
1) Only the first occurrence is kept because its order matches the
output of /proc/[pid]/smaps.
2) The kernel version that CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS was
introduced is only mentioned in the second occurrence. Now it's moved
to the first one.
Signed-off-by: Jing Peng <pj.hades@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-10-25 09:47:47 +01:00
9d4976ce7d
mmap.2, proc.5, bpf-helpers.7, cpuset.7: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-10-07 19:24:59 +02:00
e3fb1b6bfc
proc.5: ffix + srcfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-09-29 16:34:50 +02:00
161b8eda4d
clone.2, io_submit.2, select.2, shmget.2, getcontext.3, malloc_info.3, mtrace.3, posix_spawn.3, strfromd.3, proc.5: srcfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-09-29 14:24:12 +02:00
861d36ba31
pldd.1, bpf.2, clone.2, dup.2, ioctl_fat.2, nfsservctl.2, open_by_handle_at.2, perf_event_open.2, pivot_root.2, request_key.2, sched_setaffinity.2, seccomp.2, select.2, statx.2, dl_iterate_phdr.3, dlinfo.3, dlopen.3, insque.3, newlocale.3, printf.3, pthread_setname_np.3, rpc.3, stdarg.3, strfmon.3, veth.4, proc.5, slabinfo.5, cgroup_namespaces.7, cgroups.7, cpuset.7, fanotify.7, inotify.7, mount_namespaces.7, sock_diag.7, user_namespaces.7, ld.so.8: Use \(aq instead of ' inside monospace fonts
...
Use \(aq to get an unslanted single quote inside monospace code
blocks. Using a simple ' results in a slanted quote inside PDFs.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-09-24 09:32:31 +02:00
c3e8ceb883
proc.5: Note "open file description" as (better) synonym for "file handle"
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-09-09 12:09:56 +02:00
ed6c69cab9
intro.1, clock_getres.2, execve.2, fcntl.2, iopl.2, lseek.2, mknod.2, mmap.2, mount.2, mq_getsetattr.2, pidfd_open.2, prctl.2, setns.2, sgetmask.2, sigaction.2, stat.2, statx.2, sync.2, syscalls.2, syslog.2, timerfd_create.2, umask.2, a64l.3, aio_init.3, atoi.3, dladdr.3, fread.3, getpt.3, isfdtype.3, malloc_stats.3, malloc_trim.3, mkfifo.3, mq_close.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, posix_memalign.3, posix_openpt.3, pthread_atfork.3, pthread_rwlockattr_setkind_np.3, regex.3, scanf.3, sem_close.3, sem_destroy.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sigset.3, sigvec.3, strftime.3, termios.3, console_codes.4, dsp56k.4, fd.4, lp.4, mouse.4, pts.4, sk98lin.4, dir_colors.5, proc.5, resolv.conf.5, termcap.5, utmp.5, aio.7, armscii-8.7, arp.7, capabilities.7, cgroups.7, charsets.7, cp1251.7, cp1252.7, environ.7, glob.7, inode.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, mailaddr.7, man-pages.7, netdevice.7, operator.7, persistent-keyring.7, process-keyring.7, pthreads.7, pty.7, raw.7, regex.7, session-keyring.7, shm_overview.7, signal.7, socket.7, suffixes.7, thread-keyring.7, unicode.7, units.7, uri.7, user-keyring.7, user-session-keyring.7, iconvconfig.8, ld.so.8, zic.8: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-08-13 10:01:14 +02:00
af2d18b2c2
intro.1, clock_getres.2, clone.2, futex.2, ioctl_fat.2, mkdir.2, mknod.2, mmap.2, open.2, statx.2, umask.2, userfaultfd.2, glob.3, mkfifo.3, termios.3, wordexp.3, console_codes.4, sk98lin.4, vcs.4, dir_colors.5, hosts.equiv.5, proc.5, termcap.5, utmp.5, ascii.7, bpf-helpers.7, charsets.7, environ.7, glob.7, mailaddr.7, netlink.7, operator.7, suffixes.7, tcp.7, unicode.7, uri.7, zic.8: Use "\(ti" instead of "~"
...
A naked tilde ("~") renders poorly in PDF. Instead use "\(ti",
which renders better in a PDF, and produces the same glyph
when rendering on a terminal.
Reported-by: Geoff Clare <gwc@opengroup.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-08-06 22:25:11 +02:00
0629df8b96
open.2, proc.5: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-07-31 22:32:59 +02:00
9eff2f495f
proc.5: Use "pwd -P" for printing cwd
...
"/bin/pwd" happens to work with the GNU coreutils implementation,
which has -P as the default, contrary to POSIX requirements.
Use "pwd -P" instead, which is shorter, easier to type, and should
work everywhere.
Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-07-20 11:35:07 +02:00
9363af082e
proc.5: tfix
...
Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-07-20 11:27:26 +02:00
747f5636fd
proc.5: srcfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-07-06 12:44:40 +02:00
a00214da73
proc.5: wfix
...
Reported-by: Helge Kreutzmann <debian@helgefjell.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-07-06 12:43:49 +02:00
81533e83e2
proc.5: srcfix: trim trailing space
...
Output is from: test-groff -b -mandoc -T utf8 -rF0 -t -w w -z
[ "test-groff" is a developmental version of "groff" ]
Input file is ./proc.5
troff: <proc.5>:4410: warning: trailing space
troff: <proc.5>:5206: warning: trailing space
troff: <proc.5>:5488: warning: trailing space
###
There is no change in the output from "nroff" and "groff".
Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-06-21 09:02:41 +02:00
b260aaeca9
proc.5: Inform that comm in /proc/pid/{stat,status} might also be truncated
...
pgrep for example searches for a process name in /proc/pid/status
and therefore cannot find processes whose names are longer than 15
characters unless -f is specified.
Signed-off-by: Arkadiusz Drabczyk <arkadiusz@drabczyk.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-06-19 13:55:51 +02:00
0dbe186a35
proc.5: srcfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-06-11 07:24:49 +02:00
c919e22f82
proc.5: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-06-10 12:03:06 +02:00
73942082f2
proc.5: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-06-10 11:45:21 +02:00
fd85c2387b
openat2.2, proc.5, bpf-helpers.7: srcfix: strip trailing whitespace
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-06-09 14:48:40 +02:00
b65e24c34a
proc.5: Add a detail to /proc/[pid]/comm
...
Note the connection to the "%e" specifier in
/proc/sys/kernel/core_pattern.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-06-09 12:39:17 +02:00
b463b03fd5
proc.5: TASK_COMM_LEN limit includes the terminating '\0'
...
Clarify this detail in the discussion of /proc/[pid]/comm.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-06-09 12:39:17 +02:00
4ad5b7a575
proc.5: ffix
...
Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-06-08 17:41:12 +02:00
b2401bcbd3
proc.5: Remove "mp" under VmFlags in /proc/[pid]/smaps
...
Reported-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-05-26 10:29:06 +02:00
9a76645224
proc.5: Add "sf" to VmFlags in /proc/[pid]/smaps
...
Added in kernel commit b6fb293f2497a9841d94f6b57bd2bb2cd222da43
Text from comment in include/uapi/asm-generic/mman.h.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-05-25 15:46:44 +02:00
bc60704e1a
proc.5: Add "um" and "uw" to VmFlags in /proc/[pid]/smaps
...
Added in kernel commit 16ba6f811dfe44bc14f7946a4b257b85476fc16e.
Text taken from comments in include/linux/mm.h.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-05-25 15:46:44 +02:00
d85aebeaa1
proc.5: Add "mp" to VmFlags in /proc/[pid]/smaps
...
Added in kernel commit 4aae7e436fa51faf4bf5d11b175aea82cfe8224a.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-05-25 15:46:44 +02:00
8485aade48
proc.5: Note kernel version for /proc/PID/smaps VmFlags "dd" flag
...
Kernel commit ec8e41aec13005fed0dbee002fb8c99b4e001d50
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-05-25 15:46:44 +02:00
efd54c4adf
proc.5: Note kernel version that removed /proc/PID/smaps VmFlags "nl" flag
...
Kernel commit 1da4b35b001481df99a6dcab12d5d39a876f7056
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-05-25 15:46:44 +02:00
016dedb300
proc.5: Note kernel version for /proc/PID/smaps VmFlags "wf" flag
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-05-25 15:46:44 +02:00
74603f4ecd
proc.5: Add "wf" to VmFlags in /proc/[pid]/smaps
...
This patch documents a flag added in the following kernel commit:
commit d2cd9ede6e193dd7d88b6d27399e96229a551b19
Author: Rik van Riel <riel@redhat.com>
Date: Wed Sep 6 16:25:15 2017 -0700
mm,fork: introduce MADV_WIPEONFORK
This was already documented in man2/madvise.2 in the commit:
commit c0c4f6c29c
2020-05-25 15:46:44 +02:00
Michael Kerrisk