* man-pages-5.04 released
@ 2019-11-19 21:44 Michael Kerrisk (man-pages)
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From: Michael Kerrisk (man-pages) @ 2019-11-19 21:44 UTC (permalink / raw)
To: linux-man, libc-alpha@sourceware.org; +Cc: mtk.manpages
Gidday,
The Linux man-pages maintainer proudly announces:
man-pages-5.04 - man pages for Linux
This release resulted from patches, bug reports, reviews, and
comments from 15 people, with around 80 commits making changes
to just under 30 pages.
Tarball download:
http://www.kernel.org/doc/man-pages/download.html
Git repository:
https://git.kernel.org/cgit/docs/man-pages/man-pages.git/
Online changelog:
http://man7.org/linux/man-pages/changelog.html#release_5.04
A short summary of the release is blogged at:
https://linux-man-pages.blogspot.com/2019/11/man-pages-504-is-released.html
The current version of the pages is browsable at:
http://man7.org/linux/man-pages/
You are receiving this message either because:
a) You contributed to the content of this release.
b) You are subscribed to linux-man@vger.kernel.org or
libc-alpha@sourceware.org.
c) I have information (possibly inaccurate) that you are the maintainer
of a translation of the manual pages, or are the maintainer of the
manual pages set in a particular distribution, or have expressed
interest in helping with man-pages maintenance, or have otherwise
expressed interest in being notified about man-pages releases.
If you don't want to receive such messages from me, or you know of
some other translator or maintainer who may want to receive such
notifications, send me a message.
Cheers,
Michael
==================== Changes in man-pages-5.04 ====================
Released: 2019-11-19, Munich
Contributors
------------
The following people contributed patches/fixes or (noted in brackets
in the changelog below) reports, notes, and ideas that have been
incorporated in changes in this release:
Andrew Price <anprice@redhat.com>
Christian Brauner <christian.brauner@ubuntu.com>
Florian Weimer <fweimer@redhat.com>
Jakub Wilk <jwilk@jwilk.net>
Jan Kara <jack@suse.cz>
Jann Horn <jannh@google.com>
Kenigbolo Meya Stephen <kenigbol@ut.ee>
Marko Myllynen <myllynen@redhat.com>
Michael Kerrisk <mtk.manpages@gmail.com>
Mikael Magnusson <mikachu@gmail.com>
Robert Edmonds <edmonds@debian.org>
Silviu Popescu <silviupopescu1990@gmail.com>
Torin Carey <torin@tcarey.uk>
Witold Baryluk <witold.baryluk@gmail.com>
Yang Xu <xuyang2018.jy@cn.fujitsu.com>
Apologies if I missed anyone!
Newly documented interfaces in existing pages
---------------------------------------------
clone.2
Michael Kerrisk [Christian Brauner, Jakub Wilk]
Document clone3()
wait.2
Michael Kerrisk
Add P_PIDFD for waiting on a child referred to by a PID file descriptor
bpf-helpers.7
Michael Kerrisk
Refresh against kernel v5.4-rc7
New and changed links
---------------------
clone3.2
Michael Kerrisk
New link to clone(2)
Changes to individual pages
---------------------------
clone.2
Michael Kerrisk
Rename arguments for consistency with clone3()
Make the names of the clone() arguments the same as the fields
in the clone3() 'args' struct:
ctid ==> child_pid
ptid ==> parent_tid
newtls ==> tld
child_stack ==> stack
Michael Kerrisk
Consistently order paragraphs for CLONE_NEW* flags
Sometimes the descriptions of these flags mentioned the
corresponding section 7 namespace manual page and then the
required capabilities, and sometimes the order was the was
the reverse. Make it consistent.
Michael Kerrisk [Christian Brauner, Jann Horn]
EXAMPLE: Allocate child's stack using mmap(2) rather than malloc(3)
Christian Brauner suggested mmap(MAP_STACK), rather than
malloc(), as the canonical way of allocating a stack for the
child of clone(), and Jann Horn noted some reasons why
(MAP_STACK exists elsewhere, and mmap() returns a page-aligned
block of memory, which is useful if we want to set up a guard
page at the end of the stack).
Michael Kerrisk [Christian Brauner]
Tidy up the description of CLONE_DETACHED
The obsolete CLONE_DETACHED flag has never been properly
documented, but now the discussion CLONE_PIDFD also requires
mention of CLONE_DETACHED. So, properly document CLONE_DETACHED,
and mention its interactions with CLONE_PIDFD.
Michael Kerrisk [Christian Brauner]
Give the introductory paragraph a new coat of paint
Change the text in the introductory paragraph (which was written
20 years ago) to reflect the fact that clone*() does more things
nowadays.
Michael Kerrisk
Remove wording that suggests CLONE_NEW* flags are for containers
These flags are used for implementing many other interesting
things by now.
Michael Kerrisk
Remove various details that are already covered in namespaces pages
Remove details of UTS, IPC, and network namespaces that are
already covered in the corresponding namespaces pages in section 7.
clone.2
proc.5
Michael Kerrisk
Adjust references to namespaces(7)
Adjust references to namespaces(7) to be references to pages
describing specific namespace types.
fallocate.2
Andrew Price
Add gfs2 to the list of punch hole-capable filesystems
ioctl_iflags.2
Michael Kerrisk [Robert Edmonds]
Emphasize that FS_IOC_GETFLAGS and FS_IOC_SETFLAGS argument is 'int *'
ioctl_list.2
Michael Kerrisk
Add reference to ioctl(2) SEE ALSO section
The referenced section lists various pages that document ioctls.
mmap.2
Michael Kerrisk
Note that MAP_STACK exists on some other systems
Michael Kerrisk
Some rewording of the description of MAP_STACK
Reword a little to allow for the fact that there are now
*two* reasons to consider using this flag.
pidfd_open.2
Michael Kerrisk
Note the waitid() use case for PID file descriptors
Michael Kerrisk
Add a subsection header "Use cases for PID file descriptors"
Michael Kerrisk
Make it a little more explicit the CLONE_PIDFD returns a PID FD
pivot_root.2
Michael Kerrisk
EXAMPLE: allocate stack using mmap() MAP_STACK rather than malloc()
quotactl.2
Yang Xu [Jan Kara]
Add some details about Q_QUOTAON
seccomp.2
cgroups.7
Michael Kerrisk
Switch to "considerate language"
select.2
Michael Kerrisk
POLLIN_SET/POLLOUT_SET/POLLEX_SET are now defined in terms of EPOLL*
Since kernel commit a9a08845e9acbd224e4ee466f5c1275ed50054e8, the
equivalence between select() and poll()/epoll is defined in terms
of the EPOLL* constants, rather than the POLL* constants.
wait.2
Michael Kerrisk
waitid() can be used to wait on children in same process group as caller
Since Linux 5.4, idtype == P_PGID && id == 0 can be used to wait
on children in same process group as caller.
Michael Kerrisk
Clarify semantics of waitpid(0, ...)
As noted in kernel commit 821cc7b0b205c0df64cce59aacc330af251fa8f7,
threads create an ambiguity: what if the calling process's PGID
is changed by another thread while waitpid(0, ...) is blocked?
So, clarify that waitpid(0, ...) means wait for children whose
PGID matches the caller's PGID at the time of the call to
waitpid().
getauxval.3
Michael Kerrisk [Witold Baryluk]
Clarify that AT_BASE_PLATFORM and AT_EXECFN return pointers to strings
See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942207
resolv.conf.5
Florian Weimer
Attempt clarify domain/search interaction
The domain directive is historic at this point; it should not
be used.
netdevice.7
Michael Kerrisk [Silviu Popescu]
Small wording fix in description of SIOCGIFCONF
SIOCGIFCONF returns "network layer" addresses (not "transport
layer").
uts_namespaces.7
Michael Kerrisk
Add a little more detail on scope of UTS namespaces
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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