289b177f0f
random.7: Remove recommendation against consuming large amounts of randomness
...
From the email discussion:
> > Usage recommendations
> > The kernel random-number generator relies on entropy gathered
> > from device drivers and other sources of environmental noise.
> > It is designed to produce a small amount of high-quality seed
> > material to seed a cryptographically secure pseudorandom number
> > generator (CSPRNG). It is designed for security, not speed,
> > and is poorly suited to generating large amounts of crypto‐
> > graphic random data. Users should be economical in the amount
> > of seed material that they consume via getrandom(2), /dev/uran‐
> > dom, and /dev/random.
> >
> > ┌─────────────────────────────────────────────────────┐
> > │FIXME │
> > ├─────────────────────────────────────────────────────┤
> > │Is it really necessary to avoid consuming large │
> > │amounts from /dev/urandom? Various sources linked to │
> > │by https://bugzilla.kernel.org/show_bug.cgi?id=71211 │
> > │suggest it is not. │
> > │ │
> > │And: has the answer to the previous question changed │
> > │across kernel versions? │
> > └─────────────────────────────────────────────────────┘
> > Consuming unnecessarily large quantities of data via these
> > interfaces will have a negative impact on other consumers of
> > randomness.
[Ted T'so:]
> So "poorly suited" is definitely true. Also true is that urandom is
> not engineered for use for non-cryptographic uses. It's always going
> to be faster to use random(3) for those purposes.
>
> As far as whether or not it has a negative impact, it depends on how
> much you trust the underlying cryptographic algorithms. If the CSPRNG
> is seeded correctly with at least 256 bits of entropy that can't be
> guessed by the attacker, and if the underlying cryptographic
> primitives are secure, then it won't matter. But *if* there is an
> unknown vulnerability in the underlying primitive, and *if* large
> amounts of data generated by the CSPRNG would help exploit that
> vulnerability, and *if* that bulk amount of CSPRNG output is made
> available to an attacker with the capability to break the underlying
> cryptographic vulnerability, then there would be a problem.
>
> Obviously, no one knows of such a vulnerability, and I'm fairly
> confident that there won't be such a vulnerability across the
> different ways we've used to generate the urandom source --- but some
> people are professional paranoids, and would argue that we shouldn't
> make bulk output of the CSPRNG available for no good reason, just in
> case.
[Nikos Mavrogiannopoulos:]
The above is certainly accurate, however, I think that such a
discussion or text, when reflected to a man-page is going to
cause problems. The audience of a man-page are not crypto people,
and seeing such text would create confusion rather than clarify
how these devices/apis should be used. The *if* part is not put
into a perspective, suggesting that such an *if* is possible.
However, if one clarifies, i.e., in that case, your TLS or SSH
connection is most likely broken as well, and not because of any
attack on /dev/urandom, then one can see that we are heading
towards a theoretical discussion.
My suggestion, on that particular text would be to remove it,
but make it explicit somewhere in the text that all the
assurances for the devices depend on the crypto primitives,
rather than describing risks that may arise on particular
usage patterns *if* primitives are broken.
Reviewed-by: Nikos Mavrogiannopoulos <nmav@redhat.com>
Reported-by: Nikos Mavrogiannopoulos <nmav@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-26 14:31:53 +01:00
88e28f78bd
sched.7: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-22 14:44:07 +01:00
3c61c8ac19
sched.7: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-22 13:42:49 +01:00
cfd62fa259
sched.7: Give the page a more generic NAME
...
The page isn't just about APIs.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-22 13:21:32 +01:00
1f7fb9c057
sched.7: NOTES: mention cgroups CPU controller
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-22 13:19:20 +01:00
55a51edbd7
bootparam.7: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-21 10:54:55 +01:00
7c896e1ece
random.7: wfix
...
Reported-by: Jeremy Harris <jgh@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-19 11:28:46 +01:00
a4439a507a
inotify.7: srcfix: FIXME
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-18 10:41:26 +01:00
705bb6738b
inotify.7: Note a subtlety of event generation when monitoring a directory
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-18 10:39:10 +01:00
2b44a16879
random.7: wfix
...
Reported-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-15 22:14:52 +01:00
e97a8a1d49
random.7: srcfix: tweak FIXMEs
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-15 07:48:59 +01:00
091ae4d20b
random.7: Tewaks after review by Ted T'so
...
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Reported-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-15 07:40:35 +01:00
76d8c32d6f
random.7: Fixes after review by Laurent Georget
...
Reviewed-by: Laurent Georget <laurent@lgeorget.eu>
Reported-by: Laurent Georget <laurent@lgeorget.eu>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-15 07:19:09 +01:00
e10dec2908
random.7: wfix
...
Reported-by: Jeremy Harris <jgh@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-15 06:57:51 +01:00
b171f0af8a
random.7: srcfix: FIXME
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-13 07:34:18 +01:00
2c158ae506
random.7: Note that simulations don't need cryptographically secure random numbers
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-13 07:26:51 +01:00
cdfedc0324
random.7: wfix
...
Reported-by: Laurent Georget <laurent.georget@supelec.fr>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-12 23:00:40 +01:00
5a1df80797
random.7: srcfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-12 20:18:15 +01:00
e919912d34
random.7: wfix
...
Further weaken any suggestion that the "random" source is
in some cases preferable.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-12 13:19:10 +01:00
d8de7cba64
random.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-12 12:22:10 +01:00
dce6b79650
getrandom.2, random.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-12 12:22:10 +01:00
0ae2c1356d
random.7: New page providing an overview of interfaces for obtaining randomness
...
Ccontains material extracted from getrandom(2) and random(4),
as well as new material.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-12 12:22:10 +01:00
1d99db5f09
udplite.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-11 09:46:13 +01:00
b64fbdca61
user_namespaces.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-11 09:38:06 +01:00
d51fc363eb
udp.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-11 09:34:52 +01:00
d70877837a
socket.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-11 09:34:08 +01:00
d4c45a8e43
ipv6.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-11 09:33:18 +01:00
82d28cfa21
ip.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-11 09:32:09 +01:00
4e9362fe4b
inotify.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-11 09:30:27 +01:00
dac9acbf99
credentials.7: SEE ALSO: add setpriv(1)
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-10 08:33:46 +01:00
0b710a48c5
signal.7: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-09 16:50:10 +01:00
fdf41f57c7
capabilities.7: CAP_SYS_ADMIN allows privileged ioctl() operations on /dev/random
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-09 14:51:17 +01:00
ba8f381e12
capabilities.7: CAP_SYS_ADMIN governs ptrace(2) PTRACE_SECCOMP_GET_FILTER
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-08 14:07:56 +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
1cb4e899f0
pipe.7: Document pre-Linux 4.9 bugs in pipe limit checking
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-06 13:14:07 -07:00
33dc4b59be
proc.5, pipe.7: Move /proc/sys/fs/pipe-max-size content from proc(5) to pipe(7)
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-06 13:14:07 -07:00
cc6b4da2ec
pipe.7: Fixes after review by Vegard Nossum
...
Reviewed-by: Vegard Nossum <vegard.nossum@oracle.com>
Reviewed-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-06 13:14:07 -07:00
12033ac49d
pipe.7: Add a lot more detail on /proc files controlling memory usage by pipes
...
Add a lot more detail on /proc/sys/fs/pipe-max-size and
/proc/sys/fs/pipe-user-pages-{soft,hard}.
Reviewed-by: Willy Tarreau <w@1wt.eu>
Reviewed-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-06 13:14:06 -07:00
81c4577e23
pipe.7: Document /proc files controlling memory usage by pipes
...
Document /proc/sys/fs/pipe-max-size and
/proc/sys/fs/pipe-user-pages-{soft,hard}.
Signed-off: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-06 13:14:06 -07:00
498aad5099
kill.2, sigaction.2, signal.2, credentials.7, signal.7: Change section number from 2 to 3 in killpg() references
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-11-04 18:01:28 +01:00
30ed4712c7
chroot.2, dup.2, nfsservctl.2, utimensat.2, malloc_get_state.3, pthread_setaffinity_np.3, ddp.7, fifo.7, ip.7: Remove some out-of-date/obsolete/irrelevant FIXMEs
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-31 16:45:46 +01:00
c63b745431
user_namespaces.7: srcfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-31 16:44:08 +01:00
f1bf4c8c5e
svipc.7: tfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-31 16:43:05 +01:00
01fe8592ce
standards.7: POSIX.1-2016 (POSIX.1-2008 TC2) has now been released
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-31 16:41:57 +01:00
922077e0bb
netlink.7: srcfix: FIXME tidy-up
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-29 13:43:30 +02:00
85e10b8c43
udp.7: srcfix: FIXME tidy-up
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-29 13:43:30 +02:00
a933bc9ee9
tcp.7: srcfix: FIXME tidy-up
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-29 13:43:30 +02:00
e57fe8add6
socket.7: srcfix: FIXME tidy-up
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-29 13:43:30 +02:00
6248a90b6b
signal.7: srcfix: FIXME tidy-up
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-29 13:43:30 +02:00
47a2bb177e
sched.7: srcfix: FIXME tidy-up
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-29 13:43:30 +02:00
b237b37c70
namespaces.7: srcfix: FIXME tidy-up
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-29 13:43:30 +02:00
2c596bf5ff
ip.7: srcfix: FIXME tidy-up
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-29 13:43:30 +02:00
1a0fbe37e6
capabilities.7: srcfix: FIXME tidy-up
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-29 13:36:14 +02:00
c174eb6a07
cgroups.7: tfix: fix pathname of perf-record.txt kernel source file
...
Reported-by: Michael Hausenblas <michael.hausenblas@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-22 13:50:22 +02:00
2cf45b0d77
capabilities.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-19 10:53:38 +02:00
3bbab71ae8
capabilities.7: tfix + wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 10:46:54 +02:00
de6a5c0501
capabilities.7: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 09:43:27 +02:00
3b3d46e7cf
pkeys.7: srcfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 08:00:12 +02:00
c92965c2be
pkey.7: Add description of signal handling behavior
...
The signal behavior of pkeys is special compared to many other
processor and OS features. Add a special section to describe
the behavior.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
2016-10-18 07:58:52 +02:00
79a2a43713
pkeys.7: Note that SIGSEGV results if pkey restrictions are violated
...
And point to sigaction(2) for further details.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
8bb4e76704
pkeys.7: Cosmetic changes to example program
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
435f231ac9
pkeys.7: Various tweaks to the text
...
No changes to technical details.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
452f54946f
pkeys.7: New page with overview of Memory Protection Keys
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Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
2016-10-17 12:51:10 +02:00
a15e067376
cgroups.7: tfix
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Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
2016-10-08 20:08:06 +02:00
ffc3e08c2f
uri.7: Use "example.com" as example domain
...
The owner of the "xyz.com" domain might not be happy that their
domain is used in examples. RFC 2606 reserves (among others)
"example.com" for this purpose, so let's use it.
Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
2016-10-08 20:07:18 +02:00
b8efb41432
memusage.1, memusagestat.1, pldd.1, accept.2, adjtimex.2, arch_prctl.2, bdflush.2, bpf.2, close.2, epoll_ctl.2, epoll_wait.2, execve.2, execveat.2, fanotify_init.2, fanotify_mark.2, fcntl.2, fsync.2, get_kernel_syms.2, getdomainname.2, getgroups.2, gethostname.2, getrandom.2, getrlimit.2, getrusage.2, getsid.2, getunwind.2, io_getevents.2, ioctl_fat.2, kexec_load.2, killpg.2, listxattr.2, lseek.2, madvise.2, memfd_create.2, mknod.2, mlock.2, modify_ldt.2, msgctl.2, msgget.2, msgop.2, readlink.2, readv.2, reboot.2, recvmmsg.2, rename.2, request_key.2, restart_syscall.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, seccomp.2, select_tut.2, semctl.2, semget.2, semop.2, set_thread_area.2, seteuid.2, setgid.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigprocmask.2, stat.2, symlink.2, syscall.2, sysctl.2, unlink.2, bindresvport.3, byteorder.3, dlopen.3, endian.3, error.3, ffs.3, fmemopen.3, getcwd.3, getlogin.3, getnetent.3, getprotoent.3, getservent.3, getumask.3, getutent.3, glob.3, isalpha.3, lio_listio.3, login.3, mbsinit.3, mbstowcs.3, mbtowc.3, mkstemp.3, nextup.3, ntp_gettime.3, posix_fallocate.3, posix_spawn.3, pthread_join.3, pthread_rwlockattr_setkind_np.3, random.3, rcmd.3, realpath.3, resolver.3, setjmp.3, setnetgrent.3, sigvec.3, strerror.3, strverscmp.3, system.3, toupper.3, towlower.3, towupper.3, wcstombs.3, wordexp.3, cciss.4, loop.4, mouse.4, random.4, core.5, group.5, hosts.5, resolv.conf.5, ascii.7, environ.7, epoll.7, glob.7, ip.7, mq_overview.7, packet.7, pipe.7, raw.7, sched.7, signal.7, socket.7, symlink.7, ld.so.8, sln.8: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
e4c759bc0d
cgroups.7: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
754f4cf5bd
cgroups.7: Describe the cgroups v2 cgroup.events file
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
dddb7ea1fc
cgroups.7: Document cgroups v2 unified hierarchy
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
2befa495c2
cgroups.7: Restructure list of cgroup v2 differences
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
5b38b21d2d
cgroups.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
23388d411f
cgroups.7: Substantial reworking of text on v1 cgroup release notification
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
88afe701da
cgroups.7: Relocate text on "Cgroups v1 release notification"
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No text changes
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
fb4752e127
cgroups.7: Add some subheadings
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
4580c2f6cb
cgroups.7: ffix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
860573adaa
cgroups.7: Relocate "Cgroups version 1 controllers" subsection
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No text changes
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
f524e7f8c7
cgroups.7: Add some details to discussion of cgroup.procs file
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
31ec2a5cf7
cgroups.7: A cgroup v1 controller can't be mounted against multiple hierarchies
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:23 +02:00
15ce4b0cae
cgroups.7: Create a NOTES section and move fork/execve discussion there
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 14:08:17 +02:00
3ddb25ac9b
cgroups.7: Rework text on cgroup v2 "leaf" nodes
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:35 +02:00
b43be47ef1
cgroups.7: Relocate text on cgroup v2 "leaf" nodes
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No content changes
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:35 +02:00
e466137a86
cgroups.7: wfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:35 +02:00
87402a2e5b
cgroups.7: Clarify discussion of the "tasks" file
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:35 +02:00
9ed582ac20
cgroups.7: wfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:35 +02:00
c91a9f8acb
cgroups.7: Relocate "Release notification" subsection
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No text changes.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:35 +02:00
3b6c1d46ef
cgroups.7: Add "Release notification" subheading
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:35 +02:00
59dabd75ad
cgroups.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:35 +02:00
56daf0c4a9
cgroups.7: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:35 +02:00
818339692a
cgroups.7: Minor rework, plus note behavior on execve(2)
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:35 +02:00
35e8cd2f1e
cgroups.7: Minor addition
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
77e0a62674
cgroups.7: Rework discussion of mounting v1 controllers
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
66648e1d91
cgroups.7: wfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
55f52de8f6
cgroups.7: Prefer "controller" over "subsystem"
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Replace various uses of "subsystem" with "controller". The
former too was originally used in describing cgroups, but it
is vague to the point of ambiguity. The latter term is a
little less ambiguous.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
1a90a85efc
cgroups.7: Note that a controller can't be simultaneously used in v1 and v2
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
8fc9db1e06
cgroups.7: Minor rewording
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
8bff71400e
cgroups.7: Rework intro text a little
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
28bcfee96d
cgroups.7: tfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
6398ca15da
cgroups.7: Use "threads" rather than "tasks" in description
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Users-space programmers generally consider things in terms of
"processes" and threads". Update the text to remove most uses
of the term "tasks".
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
2a8ef76b59
cgroups.7: wfix: fix reference to a kernel source file
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
1a4f7d5908
cgroups.7: Remove some redundant text on /proc files
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The /proc files were mentioned in two different places.
Once is enough.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-07 23:01:34 +02:00
Michael Kerrisk