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Subjectman-pages-5.09 is released
Date
Gidday,

The Linux man-pages maintainer proudly announces:

man-pages-5.09 - man pages for Linux

This release resulted from patches, bug reports, reviews, and
comments from more than 40 people, with just over 500 commits making
changes to nearly 600 pages. Nine new pages have been added (six
of these are the result of splitting the rather unwieldy queue(3)
page into a number of small pieces). Special shout out to
Alejandro Colomar, who provided more than half (265!) of the commits.

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_5.09

A short summary of the release is blogged at:
https://linux-man-pages.blogspot.com/2020/11/man-pages-509-is-released.html

The current version of the pages is browsable at:
http://man7.org/linux/man-pages/

A selection of changes in this release that may be of interest
to readers of LKML is shown below.

Cheers,

Michael


==================== Changes in man-pages-5.09 ====================

New and rewritten pages
-----------------------

system_data_types.7
Alejandro Colomar, Michael Kerrisk
A new page documenting a wide range of system data types.

kernel_lockdown.7
David Howells, Heinrich Schuchardt [Michael Kerrisk]
New page documenting the Kernel Lockdown feature


Newly documented interfaces in existing pages
---------------------------------------------

fanotify_init.2
fanotify.7
Amir Goldstein [Jan Kara, Matthew Bobrowski]
Document FAN_REPORT_DIR_FID

fanotify_init.2
fanotify.7
Amir Goldstein [Jan Kara, Matthew Bobrowski]
Document FAN_REPORT_NAME

statx.2
Ira Weiny
Add STATX_ATTR_DAX

strerror.3
Michael Kerrisk
Document strerrorname_np() and strerrordesc_np()

strsignal.3
Michael Kerrisk
Document sigabbrev_np() and sigdescr_np().

loop.4
Yang Xu
Document LOOP_CONFIGURE ioctl
Yang Xu
Document LO_FLAGS_DIRECT_IO flag

capabilities.7
Michael Kerrisk
Document the CAP_CHECKPOINT_RESTORE capability added in Linux 5.9

ip.7
Stephen Smalley [Paul Moore]
Document IP_PASSSEC for UDP sockets

ip.7
socket.7
Stephen Smalley
Document SO_PEERSEC for AF_INET sockets
Sridhar Samudrala
Document SO_INCOMING_NAPI_ID

socket.7
unix.7
Stephen Smalley [Serge Hallyn, Simon McVittie]
Add initial description for SO_PEERSEC


Changes to individual pages
---------------------------

clone.2
Michael Kerrisk
CAP_CHECKPOINT_RESTORE can now be used to employ 'set_tid'

epoll_ctl.2
Michael Kerrisk
epoll instances can be nested to a maximum depth of 5
This limit appears to be an off-by-one count against
EP_MAX_NESTS (4).
perf_event_open.2
Alexey Budankov
Update the man page with CAP_PERFMON related information

seccomp.2
Michael Kerrisk [Jann Horn]
Warn reader that SECCOMP_RET_TRACE can be overridden
Highlight to the reader that if another filter returns a
higher-precedence action value, then the ptracer will not
be notified.
Michael Kerrisk [Rich Felker]
Warn against the use of SECCOMP_RET_KILL_THREAD
Killing a thread with SECCOMP_RET_KILL_THREAD is very likely
to leave the rest of the process in a broken state.

dlopen.3
Michael Kerrisk
Clarify DT_RUNPATH/DT_RPATH details
It is the DT_RUNPATH/DT_RPATH of the calling object (not the
executable) that is relevant for the library search. Verified
by experiment.

loop.4
Yang Xu
Add some details about lo_flags

proc.5
Michael Kerrisk
Update capability requirements for accessing /proc/[pid]/map_files
Jann Horn [Mark Mossberg]
Document inaccurate RSS due to SPLIT_RSS_COUNTING
Michael Kerrisk
Note "open file description" as (better) synonym for "file handle"

bpf-helpers.7
Michael Kerrisk [Jakub Wilk]
Resync with current kernel source

capabilities.7
Michael Kerrisk
Under CAP_SYS_ADMIN, group "sub-capabilities" together
CAP_BPF, CAP_PERFMON, and CAP_CHECKPOINT_RESTORE have all been
added to split out the power of CAP_SYS_ADMIN into weaker pieces.
Group all of these capabilities together in the list under
CAP_SYS_ADMIN, to make it clear that there is a pattern to these
capabilities.

fanotify.7
fanotify_mark.2
Amir Goldstein [Jan Kara, Matthew Bobrowski]
Generalize documentation of FAN_REPORT_FID

--
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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