mirror of https://github.com/mkerrisk/man-pages
Start of man-pages-4.15: updating Changes and Changes.old
This commit is contained in:
Michael Kerrisk
parent
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Changes
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@ -1,6 +1,6 @@
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==================== Changes in man-pages-4.14 ====================
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==================== Changes in man-pages-4.15 ====================
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Released: 2017-11-27, Paris
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Released: ????-??-??, Munich
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Contributors
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@ -10,77 +10,6 @@ The following people contributed patches/fixes or (noted in brackets
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in the changelog below) reports, notes, and ideas that have been
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incorporated in changes in this release:
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Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Adrian Bunk <bunk@kernel.org>
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Ahmad Fatoum <ahmad@a3f.at>
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Andrea Arcangeli <aarcange@redhat.com>
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Bastien Roucaries <roucaries.bastien@gmail.com>
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Breno Leitao <leitao@debian.org>
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Carlos O'Donell <carlos@redhat.com>
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Christian Brauner <christian.brauner@ubuntu.com>
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Christoph Hellwig <hch@lst.de>
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Colm MacCárthaigh <colm@allcosts.net>
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Craig Ringer <craig.ringer@2ndquadrant.com>
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Cristian Rodríguez <crrodriguez@opensuse.org>
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David Eckardt <david.eckardt@sociomantic.com>
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Don Brace <don.brace@microsemi.com>
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Elliot Hughes <enh@google.com>
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Eric W. Biederman <ebiederm@xmission.com>
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Fabio Scotoni <fabio@esse.ch>
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Fangrui Song <i@maskray.me>
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Florian Weimer <fweimer@redhat.com>
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G. Branden Robinson <g.branden.robinson@gmail.com>
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Goldwyn Rodrigues <rgoldwyn@suse.com>
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Grégory Vander Schueren <gregory.vanderschueren@tessares.net>
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Jakub Wilk <jwilk@jwilk.net>
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Jann Horn <jannh@google.com>
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Jeff Layton <jlayton@redhat.com>
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Jens Axboe <axboe@kernel.dk>
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Jonny Grant <jg@jguk.org>
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Julien Gomes <julien@arista.com>
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Kees Cook <keescook@chromium.org>
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Křištof Želechovski <giecrilj@stegny.2a.pl>
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Lennart Poettering <lennart@poettering.net>
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Lucas Werkmeister <mail@lucaswerkmeister.de>
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Marcus Folkesson <marcus.folkesson@gmail.com>
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Marin H. <mar-tSIEzQ@neutronstar.noip.me>
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Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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Matthew Wilcox <willy@infradead.org>
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Michael Kerrisk <mtk.manpages@gmail.com>
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Michal Hocko <mhocko@kernel.org>
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Michał Zegan <webczat_200@poczta.onet.pl>
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Mihir Mehta <mihir@cs.utexas.edu>
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Mike Frysinger <vapier@chromium.org>
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Mike Kravetz <mike.kravetz@oracle.com>
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Mike Rapoport <rppt@linux.vnet.ibm.com>
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Miklos Szeredi <mszeredi@redhat.com>
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NeilBrown <neilb@suse.com>
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Oliver Ebert <oe@outputenable.net>
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Pedro Alves <palves@redhat.com>
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Per Böhlin <Per.Bohlin@zenterio.com>
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Peter Zijlstra <peterz@infradead.org>
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Petr Malat <oss@malat.biz>
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Petr Uzel <petr.uzel@suse.cz>
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Prakash Sangappa <prakash.sangappa@oracle.com>
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Raghavendra D Prabhu <me@rdprabhu.com>
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Rahul Bedarkar <rpal143@gmail.com>
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Ram Pai <linuxram@us.ibm.com>
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Richard Knutsson <richard.knutsson@abelko.se>
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Rik van Riel <riel@redhat.com>
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Scott Vokes <vokes.s@gmail.com>
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Seonghun Lim <wariua@gmail.com>
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Stas Sergeev <stsp@list.ru>
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Stefan Puiu <stefan.puiu@gmail.com>
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Thomas Gleixner <tglx@linutronix.de>
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Tobias Klausmann <klausman@schwarzvogel.de>
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Tomas Pospisek <tpo@sourcepole.ch>
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Tyler Hicks <tyhicks@canonical.com>
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Victor Porton <porton@narod.ru>
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Walter Harms <wharms@bfs.de>
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Wesley Aptekar-Cassels <w.aptekar@gmail.com>
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Yubin Ruan <ablacktshirt@gmail.com>
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Zack Weinberg <zackw@panix.com>
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Дилян Палаузов <dilyan.palauzov@aegee.org>
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Apologies if I missed anyone!
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@ -88,728 +17,19 @@ Apologies if I missed anyone!
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New and rewritten pages
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-----------------------
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pthread_spin_init.3
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Michael Kerrisk [Peter Zijlstra, Thomas Gleixner, Zack Weinberg,
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Florian Weimer]
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New page describing pthread_spin_init(3) and pthread_spin_destroy(3)
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pthread_spin_lock.3
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Michael Kerrisk [Carlos O'Donell]
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New page describing functions that lock and unlock spin locks
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Add a page describing pthread_spin_lock(3), pthread_spin_unlock(3),
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and pthread_spin_trylock(3).
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smartpqi.4
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Don Brace [Michael Kerrisk, G. Branden Robinson]
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Document the smartpqi SCSI driver
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veth.4
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Tomáš Pospíšek, Eric Biederman, Michael Kerrisk
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New page document veth virtual ethernet devices
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Based on a page from Tomáš Pospíšek, with some clean-ups by mtk.
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Removed pages
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-------------
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infnan.3:
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Michael Kerrisk
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This function was in libc4 and libc5, but never part
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of glibc. It ceased to be relevant nearly 20 years
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ago. Time to remove the man page.
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Newly documented interfaces in existing pages
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---------------------------------------------
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ioctl_userfaultfd.2
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userfaultfd.2
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Prakash Sangappa [Andrea Arcangeli, Mike Rapoport]
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Add description for UFFD_FEATURE_SIGBUS
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madvise.2
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Rik van Riel [Colm MacCárthaigh, Michael Kerrisk]
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Document MADV_WIPEONFORK and MADV_KEEPONFORK
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Michael Kerrisk
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Note fork() and execve() semantics for wipe-on-fork setting
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membarrier.2
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Mathieu Desnoyers
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Update membarrier manpage for 4.14
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Add documentation for these new membarrier() commands:
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MEMBARRIER_CMD_PRIVATE_EXPEDITED
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MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED
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memfd_create.2
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Mike Kravetz
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Add description of MFD_HUGETLB (hugetlbfs) support
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hugetlbfs support for memfd_create() was recently merged by Linus
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and should be in the Linux 4.14 release. To request hugetlbfs
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support a new memfd_create() flag (MFD_HUGETLB) was added.
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readv.2
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Christoph Hellwig
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Document RWF_NOWAIT added in Linux 4.14
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seccomp.2
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Tyler Hicks
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Document the SECCOMP_GET_ACTION_AVAIL operation added in Linux 4.14
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Tyler Hicks
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Document the SECCOMP_FILTER_FLAG_LOG flag added in Linux 4.14
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Tyler Hicks
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Document the SECCOMP_RET_LOG action added In Linux 4.14
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Michael Kerrisk [Kees Cook]
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Add description of SECCOMP_RET_KILL_PROCESS
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Michael Kerrisk
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Add SECCOMP_RET_KILL_THREAD description and rework SECCOMP_RET_KILL text
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Michael Kerrisk
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Document the seccomp audit logging feature added in Linux 4.14
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seccomp.2
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proc.5
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Tyler Hicks
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Document the seccomp /proc interfaces added in Linux 4.14
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Document the seccomp /proc interfaces in Linux 4.14:
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/proc/sys/kernel/seccomp/actions_avail and
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/proc/sys/kernel/seccomp/actions_logged.
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sigaltstack.2
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Michael Kerrisk [Stas Sergeev]
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Document the SS_AUTODISARM flag added in Linux 4.7
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proc.5
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Michael Kerrisk
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Document /proc/locks
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Oliver Ebert
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Document /proc/kpagecgroup
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Oliver Ebert
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Add KPF_BALLOON, KPF_ZERO_PAGE, and KPF_IDLE for /proc/kpageflags
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pid_namespaces.7
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Michael Kerrisk
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Document /proc/sys/kernel/ns_last_pid
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New and changed links
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---------------------
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pthread_spin_destroy.3
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Michael Kerrisk
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New link to new pthread_spin_init.3 page
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pthread_spin_trylock.3
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pthread_spin_unlock.3
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Michael Kerrisk
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New links to new pthread_spin_lock.3 page
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Global changes
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--------------
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Various pages
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Michael Kerrisk
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Consistently use "x86-64", not "x86_64"
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When referring to the architecture, consistently use "x86-64",
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not "x86_64". Hitherto, there was a mixture of usages, with
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"x86-64" predominant.
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Various pages
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G. Branden Robinson
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Replace incorrect uses of Latin abbreviation "cf.".
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People seem to be using "cf." ("confere"), which means "compare",
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to mean "see" instead, for which the Latin abbreviation would be
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Changes to individual pages
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---------------------------
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capget.2
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Michael Kerrisk
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Clarify discussion of kernels that have no VFS capability support
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clock_getres.2
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Michael Kerrisk
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clock_gettime() may be implemented in the vDSO
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clone.2
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Michael Kerrisk
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Warn that the clone() wrapper modifies child_stack in the parent
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Michael Kerrisk
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Rework the discussion of the historical CLONE_PID for clarity
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Michael Kerrisk
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Add NOTES heading
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Michael Kerrisk
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Add a reference to new veth(4) page
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Michael Kerrisk
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Eliminate some redundant phrasing in discussion of "fn()"
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Michael Kerrisk
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Combine redundant paragraphs describing child_stack==NULL
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Michael Kerrisk
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Note that child_stack can be NULL when using the raw system call
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Michael Kerrisk
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Remove a redundant paragraph
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connect.2
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Michael Kerrisk
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Clarify that ECONNREFUSED is for stream sockets
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fcntl.2
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Michael Kerrisk [Jens Axboe]
|
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Inode read-write hints persist only until the filesystem is unmounted
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flock.2
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Michael Kerrisk
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Move NFS details to a headed subsection
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Michael Kerrisk [Petr Uzel]
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Placing an exclusive lock over NFS requires the file is open for writing
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fork.2
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Rik van Riel [Colm MacCárthaigh, Michael Kerrisk]
|
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Document effect of MADV_WIPEONFORK
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fork.2
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getsid.2
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setpgid.2
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setsid.2
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Ahmad Fatoum
|
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Include <sys/types.h> in SYNOPSIS to obtain declaration of pid_t
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fsync.2
|
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Craig Ringer
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ERRORS: add ENOSPC
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getcpu.2
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Michael Kerrisk
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getcpu() may have an implementation in the vDSO
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getpid.2
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Michael Kerrisk
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Mention that PID == TGID, and note contrast with TID
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Michael Kerrisk
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SEE ALSO: add gettid(2)
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getrandom.2
|
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Michael Kerrisk [Fabio Scotoni]
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ERRORS: add ENOSYS
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getrlimit.2
|
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Michael Kerrisk [Scott Vokes]
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Make it clear RLIMIT_NPROC is a limit on current number of processes
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https://twitter.com/silentbicycle/status/893849097903505409
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gettid.2
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Michael Kerrisk
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SEE ALSO: add getpid(2)
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gettimeofday.2
|
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Michael Kerrisk
|
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Note that gettimeofday() may be implemented in the vDSO
|
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|
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ioctl_userfaultfd.2
|
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Michael Kerrisk
|
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Rework version information for feature bits
|
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|
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io_submit.2
|
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Goldwyn Rodrigues
|
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Add iocb details to io_submit
|
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Add more information about the iocb structure. Explains the
|
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fields of the I/O control block structure which is passed to the
|
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io_submit() call.
|
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Michael Kerrisk
|
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Add cross-reference to io_getevents(2)
|
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Michael Kerrisk
|
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Cross reference pwritev(2) in discussion of RWF_SYNC and RWF_DSYNC
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|
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membarrier.2
|
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Mathieu Desnoyers
|
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Update example to take TSO into account
|
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The existing example given specifically states that it focus on
|
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x86 (TSO memory model), but gives a read-read vs write-write
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ordering example, even though this scenario does not require
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explicit barriers on TSO.
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|
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So either we change the example architecture to a weakly-ordered
|
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architecture, or we change the example to a scenario requiring
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barriers on x86.
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Let's stay on x86, but provide a Dekker as example instead.
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Mathieu Desnoyers
|
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Adapt the MEMBARRIER_CMD_SHARED return value documentation to
|
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reflect that it now returns -EINVAL when issued on a system
|
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configured for nohz_full.
|
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|
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memfd_create.2
|
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Michael Kerrisk
|
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Note the limit for size of 'name'
|
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|
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mkdir.2
|
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Michael Kerrisk [Raghavendra D Prabhu]
|
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ERRORS: document EINVAL error for invalid filename
|
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|
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mmap.2
|
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Michael Kerrisk
|
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Add explicit text noting that 'length' must be greater than 0
|
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Currently, this detail is hidden in ERRORS. Make it clear in
|
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the main text.
|
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Michael Kerrisk
|
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SEE ALSO: add ftruncate(2)
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|
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mremap.2
|
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Mike Kravetz [Florian Weimer, Jann Horn]
|
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Add description of old_size == 0 functionality
|
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Since at least the 2.6 time frame, mremap() would create a new
|
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mapping of the same pages if 'old_size == 0'. It would also leave
|
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the original mapping. This was used to create a 'duplicate
|
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mapping'.
|
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|
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A recent change was made to mremap() so that an attempt to create a
|
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duplicate a private mapping will fail.
|
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Michael Kerrisk [Michal Hocko, Mike Kravetz]
|
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BUGS: describe older behavior for old_size==0 on private mappings
|
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Explain the older behavior, and why it changed. This is a
|
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follow-up to Mike Kravetz's patch documenting the behavior
|
||||
for old_size==0 with shared mappings.
|
||||
Michael Kerrisk
|
||||
Reformat EINVAL errors as a list
|
||||
|
||||
open.2
|
||||
Michael Kerrisk
|
||||
By contrast with O_RDONLY, no file permissions are required for O_PATH
|
||||
Note one of the significant advantages of O_PATH: many of the
|
||||
operations applied to O_PATH file descriptors don't require
|
||||
read permission, so there's no reason why the open() itself
|
||||
should require read permission.
|
||||
Michael Kerrisk
|
||||
Note use of O_PATH to provide O_EXEC functionality
|
||||
Michael Kerrisk
|
||||
Mention O_PATH file descriptor use with fexecve(3)
|
||||
Michael Kerrisk
|
||||
ERRORS: document EINVAL error for invalid filename
|
||||
Michael Kerrisk
|
||||
Clarify that O_TMPFILE creates a *regular* file
|
||||
Michael Kerrisk
|
||||
Make it explicit that O_CREAT creates a regular file
|
||||
Michael Kerrisk
|
||||
Since glibc 2.26, the open() wrapper always uses the openat() syscall
|
||||
Michael Kerrisk
|
||||
Change pathname used in discussion of rationale for openat()
|
||||
/path/to/file is a little confusing as a pathname
|
||||
Michael Kerrisk
|
||||
Make the purpose of open() a little clearer at the start of the page
|
||||
|
||||
open_by_handle_at.2
|
||||
NeilBrown
|
||||
Clarifications needed due to NFS reexport
|
||||
NeilBrown [Lennart Poettering]
|
||||
Clarify MAX_HANDLE_SZ
|
||||
As hinted in the kernel source, MAX_HANDLE_SZ is a hint
|
||||
rather than a promise.
|
||||
|
||||
pipe.2
|
||||
Michael Kerrisk [Marin H.]
|
||||
Since Linux 4.5, fcntl() can be used to set O_DIRECT for a pipe
|
||||
See https://bugzilla.kernel.org/show_bug.cgi?id=197917
|
||||
|
||||
pivot_root.2
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add switch_root(8)
|
||||
|
||||
pkey_alloc.2
|
||||
Breno Leitao
|
||||
Fix argument order
|
||||
Currently pkey_alloc() syscall has two arguments, and the very
|
||||
first argument is still not supported and should be set to zero.
|
||||
The second argument is the one that should specify the
|
||||
page access rights.
|
||||
|
||||
ptrace.2
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add ltrace(1)
|
||||
|
||||
reboot.2
|
||||
Michael Kerrisk [Michał Zegan]
|
||||
Fix bogus description of reboot() from non-initial PID namespace
|
||||
The current text was confused (mea culpa). No signal is sent to
|
||||
the init() process. Rather, depending on the 'cmd' given to
|
||||
reboot(), the 'group_exit_code' value will set to either SIGHUP or
|
||||
SIGINT, with the effect that one of those signals is reported to
|
||||
wait() in the parent process.
|
||||
|
||||
See https://bugzilla.kernel.org/show_bug.cgi?id=195899
|
||||
Michael Kerrisk
|
||||
SEE ALSO: remove reboot(8) (synonym for halt(8)); add shutdown(8)
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add systemctl(1), systemd(1)
|
||||
|
||||
recvmmsg.2
|
||||
sendmmsg.2
|
||||
Elliot Hughes
|
||||
Type fixes in SYNOPSIS
|
||||
[mtk: The raw system calls use "unsigned int", but the glibc
|
||||
wrappers have "int" for the 'flags' argument.]
|
||||
|
||||
sched_setaffinity.2
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add numactl(8)
|
||||
|
||||
sched_yield.2
|
||||
Michael Kerrisk [Peter Zijlstra]
|
||||
sched_yield() is intended for use with real-time scheduling policies
|
||||
|
||||
seccomp.2
|
||||
Michael Kerrisk [Adhemerval Zanella, Florian Weimer, Kees Cook]
|
||||
Add some Caveats regarding the use of seccomp filters
|
||||
Michael Kerrisk
|
||||
Document the "default" filter return action
|
||||
The kernel defaults to either SECCOMP_RET_KILL_PROCESS
|
||||
or SECCOMP_RET_KILL_THREAD for unrecognized filter
|
||||
return action values.
|
||||
Michael Kerrisk [Kees Cook]
|
||||
Change SECCOMP_RET_ACTION to SECCOMP_RET_ACTION_FULL
|
||||
In Linux 4.14, the action component of the return value
|
||||
switched from being 15 bits to being 16 bits. A new macro,
|
||||
SECCOMP_RET_ACTION_FULL, that masks the 16 bits was added,
|
||||
to replace the older SECCOMP_RET_ACTION.
|
||||
Michael Kerrisk
|
||||
Explicitly note that other threads survive SECCOMP_RET_KILL_THREAD
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add strace(1)
|
||||
|
||||
send.2
|
||||
Grégory Vander Schueren
|
||||
Add EALREADY to ERRORS
|
||||
|
||||
setns.2
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add nsenter(1)
|
||||
|
||||
shmop.2
|
||||
Yubin Ruan
|
||||
Note that return value of shmat() is page-aligned
|
||||
|
||||
sigaction.2
|
||||
Michael Kerrisk
|
||||
Rework discussion of SA_SIGINFO handler arguments
|
||||
Expand and rework the text a little, in particular adding
|
||||
a reference to sigreturn(2) as a source of further
|
||||
information about the ucontext argument.
|
||||
Michael Kerrisk
|
||||
Mention that libc sets the act.sa_restorer field
|
||||
|
||||
sigaltstack.2
|
||||
Michael Kerrisk [Walter Harms]
|
||||
Reword BUGS text to be a little clearer
|
||||
Michael Kerrisk
|
||||
Add explicit error handling to example code
|
||||
Michael Kerrisk
|
||||
Add use of sigaction() to example code
|
||||
|
||||
sigreturn.2
|
||||
Michael Kerrisk
|
||||
Make it a little clearer that a stack frame is created by the kernel
|
||||
Michael Kerrisk
|
||||
glibc has a simple wrapper for sigreturn() that returns ENOSYS
|
||||
|
||||
splice.2
|
||||
Michael Kerrisk
|
||||
Since Linux 2.6.31,'fd_in' and 'fd_out' may both refer to pipes
|
||||
|
||||
stat.2
|
||||
Michael Kerrisk [Richard Knutsson]
|
||||
Use lstat() instead of stat()
|
||||
It's more logical to use lstat() in the example code,
|
||||
since one can then experiment with symbolic links, and
|
||||
also the S_IFLNK case can also occur.
|
||||
NeilBrown
|
||||
Correct AT_NO_AUTOMOUNT text and general revisions
|
||||
Expand on the relationship between fstatat() and the other three
|
||||
functions, and improve the description of AT_NO_AUTOMOUNT.
|
||||
Specifically, both stat() and lstat() act the same way with
|
||||
respect to automounts, and that behavior matches fstatat() with
|
||||
the AT_NO_AUTOMOUNT flag.
|
||||
|
||||
statfs.2
|
||||
Michael Kerrisk
|
||||
Add some comments noting filesystems that are no longer current
|
||||
Michael Kerrisk
|
||||
Add comments describing a few filesystem types
|
||||
|
||||
time.2
|
||||
Michael Kerrisk
|
||||
Note that time() may be implemented in the vDSO
|
||||
Michael Kerrisk [Victor Porton]
|
||||
Language fix-up: clarify that "tasks" means "work"
|
||||
See https://bugzilla.kernel.org/show_bug.cgi?id=197183
|
||||
|
||||
userfaultfd.2
|
||||
Mike Rapoport
|
||||
BUGS: document spurious UFFD_EVENT_FORK
|
||||
|
||||
write.2
|
||||
fsync.2
|
||||
close.2
|
||||
NeilBrown [Jeff Layton]
|
||||
Update description of error codes
|
||||
Since 4.13, errors from writeback are more reliably reported
|
||||
to all file descriptors that might be relevant.
|
||||
|
||||
Add notes to this effect, and also add detail about ENOSPC and
|
||||
EDQUOT which can be delayed in a similar many to EIO - for NFS
|
||||
in particular.
|
||||
|
||||
abort.3
|
||||
Michael Kerrisk
|
||||
Starting with glibc 2.27, abort() does not attempt to flush streams
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add assert(3)
|
||||
|
||||
backtrace_symbols_fd(3)
|
||||
Stefan Puiu [Walter Harms]
|
||||
backtrace_symbols_fd() can trigger a call to malloc()
|
||||
|
||||
daemon.3
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add daemon(7), logrotate(8)
|
||||
|
||||
errno.3
|
||||
Michael Kerrisk
|
||||
Note use of errno(1) to look up error names and numbers
|
||||
Michael Kerrisk
|
||||
Update error list for POSIX.1-2008
|
||||
POSIX.1-2008 specified a couple of new errors not present in
|
||||
POSIX.1-2001.
|
||||
Michael Kerrisk [Walter Harms]
|
||||
Note the use of perror(3) and strerror(3)
|
||||
Michael Kerrisk
|
||||
Recast the advice against manually declaring 'errno'
|
||||
Recast the advice against manually declaring 'errno' to
|
||||
a more modern perspective. It's 13 years since the original
|
||||
text was added, and even then it was describing old behavior.
|
||||
Cast the description to be about behavior further away in
|
||||
time, and note more clearly that manual declaration will
|
||||
cause problems with modern C libraries.
|
||||
Michael Kerrisk
|
||||
Add some missing errors
|
||||
Michael Kerrisk
|
||||
Error numbers are positive values (rather than nonzero values)
|
||||
POSIX.1-2008 noted the explicitly the change (to align with
|
||||
the C standards) that error numbers are positive, rather
|
||||
than nonzero.
|
||||
Michael Kerrisk
|
||||
Reorganize the text and and some subheadings
|
||||
Restructure the text and add some subheadings for better
|
||||
readability. No (intentional) content changes.
|
||||
Michael Kerrisk [Wesley Aptekar-Cassels]
|
||||
Note that error numbers vary somewhat across architectures
|
||||
Added after a patch from Wesley Aptekar-Cassels that proposed
|
||||
to add error numbers to the text.
|
||||
Michael Kerrisk
|
||||
Note the <errno.h> also provides the symbolic error names
|
||||
Michael Kerrisk [Walter Harms]
|
||||
Explicitly note that error numbers vary also across UNIX systems
|
||||
|
||||
exec.3
|
||||
Michael Kerrisk
|
||||
glibc 2.24 dropped CWD from the default path
|
||||
Document the glibc 2.24 change that dropped CWD from the default
|
||||
search path employed by execlp(), execvp() and execvpe() when
|
||||
PATH is not defined.
|
||||
|
||||
fexecve.3
|
||||
Michael Kerrisk
|
||||
O_PATH file descriptors are also usable with fexecve()
|
||||
Cristian Rodríguez
|
||||
fexecve() is now implemented with execveat(2), where available
|
||||
Michael Kerrisk
|
||||
Add some detail on the glibc implementation of fexecve() via execveat(2)
|
||||
|
||||
ffs.3
|
||||
Michael Kerrisk
|
||||
glibc 2.27 relaxes the FTM requirements for ffsl() and ffsll()
|
||||
|
||||
get_nprocs_conf.3
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add nproc(1)
|
||||
|
||||
lround.3
|
||||
Michael Kerrisk [David Eckardt]
|
||||
Clarify that lround() rounds *halfway cases" away from zero
|
||||
See https://bugzilla.kernel.org/show_bug.cgi?id=194601
|
||||
|
||||
makedev.3
|
||||
Adrian Bunk
|
||||
glibc has deprecated exposing the definitions via <sys/types.h>
|
||||
|
||||
mallinfo.3
|
||||
Jakub Wilk
|
||||
Fix the example
|
||||
Remove reference to non-standard "tlpi_hdr.h" and replace calls to
|
||||
functions that were declared in this header.
|
||||
|
||||
malloc.3
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add valgrind(1)
|
||||
|
||||
popen.3
|
||||
Michael Kerrisk
|
||||
Add a cross reference to Caveats in system(3)
|
||||
All of the same risks regarding system() also apply to popen().
|
||||
|
||||
pthread_detach.3
|
||||
Michael Kerrisk [Rahul Bedarkar]
|
||||
Improve sentence describing freeing of resources on process termination
|
||||
As reported by Rahul, the existing sentence could be read as
|
||||
meaning that resources of joined and terminated detached
|
||||
threads are freed only at process termination. Eliminate
|
||||
that possible misreading.
|
||||
|
||||
pthread_yield.3
|
||||
Michael Kerrisk [Peter Zijlstra]
|
||||
pthread_yield() is intended for use with real-time scheduling policies
|
||||
|
||||
setlocale.3
|
||||
Michael Kerrisk [Křištof Želechovski]
|
||||
The standards do not specify all of the locale categories
|
||||
|
||||
sockatmark.3
|
||||
Seonghun Lim
|
||||
Fix cruft in code example
|
||||
|
||||
stdio.3
|
||||
Michael Kerrisk
|
||||
Use proper section cross references in function list
|
||||
Michael Kerrisk
|
||||
Remove crufty reference to pc(1)
|
||||
|
||||
sysconf.3
|
||||
Michael Kerrisk
|
||||
Mention get_nprocs_conf(3)
|
||||
Mention get_nprocs_conf(3) in discussion of _SC_NPROCESSORS_CONF
|
||||
and _SC_NPROCESSORS_ONLN.
|
||||
|
||||
system.3
|
||||
Michael Kerrisk [Bastien Roucaries]
|
||||
Create a "Caveats" subsection to hold warnings about the use of system()
|
||||
See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=882222
|
||||
Michael Kerrisk [Bastien Roucaries]
|
||||
Mention PATH explicitly in discussion of system() and set-UID programs
|
||||
Michael Kerrisk [Bastien Roucaries]
|
||||
Note that user input for system() should be carefully sanitized
|
||||
Michael Kerrisk
|
||||
Mention file capabilities in discussion of privileged programs
|
||||
Michael Kerrisk
|
||||
Correctly note which shell Debian uses as (noninteractive) /bin/sh
|
||||
|
||||
core.5
|
||||
Michael Kerrisk
|
||||
Add some notes on systemd and core dumps
|
||||
Michael Kerrisk
|
||||
Dumps are not produced if core_pattern is empty and core_uses_pid is 0
|
||||
Michael Kerrisk [Per Böhlin]
|
||||
RLIMIT_CORE is not enforced when piping core dump to a program
|
||||
Michael Kerrisk
|
||||
SEE ALO: add systemd-coredump(8)
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add coredumpctl(1)
|
||||
|
||||
filesystems.5
|
||||
Michael Kerrisk [Jonny Grant]
|
||||
Replace crufty URL reference for 'smb' with up-to-date URL
|
||||
Michael Kerrisk [Jonny Grant]
|
||||
Refer to VFAT as an extended FAT (not DOS) filesystem
|
||||
|
||||
proc.5
|
||||
Michael Kerrisk [Miklos Szered, Ram Pai]
|
||||
Correct the description of the parent mount ID for /proc/PID/mountinfo
|
||||
Oliver Ebert
|
||||
Add mmap-exclusive bit for /proc/[pid]/pagemap
|
||||
Marcus Folkesson
|
||||
Update description of /proc/<pid>/oom_score
|
||||
Lucas Werkmeister
|
||||
Clarify permissions in /proc/[pid]/fd/
|
||||
Michael Kerrisk
|
||||
Add reference to pid_namespaces(7) for /proc/sys/kernel/ns_last_pid
|
||||
|
||||
shells.5
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add pam_shells(8)
|
||||
|
||||
sysfs.5
|
||||
Michael Kerrisk
|
||||
Add a brief explanation of /sys/kernel
|
||||
Michael Kerrisk
|
||||
Add a brief description of /sys/class/net
|
||||
Michael Kerrisk
|
||||
Add a brief description of /sys/kernel/mm
|
||||
Michael Kerrisk
|
||||
Add brief description of /sys/kernel/debug/tracing
|
||||
Michael Kerrisk
|
||||
Add a description of /sys/kernel/mm/hugepages
|
||||
|
||||
arp.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add arpd(8)
|
||||
|
||||
capabilities.7
|
||||
Michael Kerrisk
|
||||
Add a reference to xattr(7) in the discussion of extended attributes
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add captest(8)
|
||||
|
||||
epoll.7
|
||||
Michael Kerrisk
|
||||
Note existence of kcmp() KCMP_EPOLL_TFD operation
|
||||
|
||||
fifo.7
|
||||
Michael Kerrisk
|
||||
Refer reader to pipe(7) for details of I/O semantics of FIFOs
|
||||
|
||||
hier.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add file-hierarchy(7)
|
||||
|
||||
icmp.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add rdisc(8)
|
||||
|
||||
man-pages.7
|
||||
Michael Kerrisk
|
||||
Note that "x86-64" is generally preferred over "x86_64"
|
||||
G. Branden Robinson
|
||||
Add a use case for real minus character
|
||||
|
||||
namespaces.7
|
||||
Michael Kerrisk
|
||||
Add a reference to new veth(4) page
|
||||
Michael Kerrisk
|
||||
EXAMPLE: refer also to example in clone(2)
|
||||
|
||||
pid_namespaces.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add reboot(2)
|
||||
Add because reboot(2) has special semantics for non-initial
|
||||
PID namespaces.
|
||||
|
||||
pthreads.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add pthread_spin_init(3) and pthread_spin_lock(3)
|
||||
|
||||
socket.7
|
||||
Michael Kerrisk [Petr Malat, Tobias Klausmann]
|
||||
Correct the description of SO_RXQ_OVFL
|
||||
|
||||
standards.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add getconf(1), confstr(3), pathconf(3), sysconf(3)
|
||||
|
||||
user_namespaces.7
|
||||
Christian Brauner [Michael Kerrisk]
|
||||
Document new 340 line idmap limit
|
||||
|
||||
ld.so.8
|
||||
Michael Kerrisk [Yubin Ruan]
|
||||
Simplify language around conferring capabilities
|
||||
The statement "conferring permitted or effective capabilities"
|
||||
to the process is somewhat redundant. Binaries with capabilities
|
||||
confer capabilities only to those process capability sets, so it's
|
||||
simpler to just say "confers capabilities to the process".
|
||||
|
|
|
|||
817
Changes.old
817
Changes.old
|
|
@ -46395,3 +46395,820 @@ tcp.7
|
|||
unicode.7
|
||||
Eugene Syromyatnikov
|
||||
Update pointer to in-kernel Unicode terminal support documentation
|
||||
|
||||
|
||||
==================== Changes in man-pages-4.14 ====================
|
||||
|
||||
Released: 2017-11-27, Paris
|
||||
|
||||
|
||||
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:
|
||||
|
||||
Adhemerval Zanella <adhemerval.zanella@linaro.org>
|
||||
Adrian Bunk <bunk@kernel.org>
|
||||
Ahmad Fatoum <ahmad@a3f.at>
|
||||
Andrea Arcangeli <aarcange@redhat.com>
|
||||
Bastien Roucaries <roucaries.bastien@gmail.com>
|
||||
Breno Leitao <leitao@debian.org>
|
||||
Carlos O'Donell <carlos@redhat.com>
|
||||
Christian Brauner <christian.brauner@ubuntu.com>
|
||||
Christoph Hellwig <hch@lst.de>
|
||||
Colm MacCárthaigh <colm@allcosts.net>
|
||||
Craig Ringer <craig.ringer@2ndquadrant.com>
|
||||
Cristian Rodríguez <crrodriguez@opensuse.org>
|
||||
David Eckardt <david.eckardt@sociomantic.com>
|
||||
Don Brace <don.brace@microsemi.com>
|
||||
Elliot Hughes <enh@google.com>
|
||||
Eric W. Biederman <ebiederm@xmission.com>
|
||||
Fabio Scotoni <fabio@esse.ch>
|
||||
Fangrui Song <i@maskray.me>
|
||||
Florian Weimer <fweimer@redhat.com>
|
||||
G. Branden Robinson <g.branden.robinson@gmail.com>
|
||||
Goldwyn Rodrigues <rgoldwyn@suse.com>
|
||||
Grégory Vander Schueren <gregory.vanderschueren@tessares.net>
|
||||
Jakub Wilk <jwilk@jwilk.net>
|
||||
Jann Horn <jannh@google.com>
|
||||
Jeff Layton <jlayton@redhat.com>
|
||||
Jens Axboe <axboe@kernel.dk>
|
||||
Jonny Grant <jg@jguk.org>
|
||||
Julien Gomes <julien@arista.com>
|
||||
Kees Cook <keescook@chromium.org>
|
||||
Křištof Želechovski <giecrilj@stegny.2a.pl>
|
||||
Lennart Poettering <lennart@poettering.net>
|
||||
Lucas Werkmeister <mail@lucaswerkmeister.de>
|
||||
Marcus Folkesson <marcus.folkesson@gmail.com>
|
||||
Marin H. <mar-tSIEzQ@neutronstar.noip.me>
|
||||
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
|
||||
Matthew Wilcox <willy@infradead.org>
|
||||
Michael Kerrisk <mtk.manpages@gmail.com>
|
||||
Michal Hocko <mhocko@kernel.org>
|
||||
Michał Zegan <webczat_200@poczta.onet.pl>
|
||||
Mihir Mehta <mihir@cs.utexas.edu>
|
||||
Mike Frysinger <vapier@chromium.org>
|
||||
Mike Kravetz <mike.kravetz@oracle.com>
|
||||
Mike Rapoport <rppt@linux.vnet.ibm.com>
|
||||
Miklos Szeredi <mszeredi@redhat.com>
|
||||
NeilBrown <neilb@suse.com>
|
||||
Oliver Ebert <oe@outputenable.net>
|
||||
Pedro Alves <palves@redhat.com>
|
||||
Per Böhlin <Per.Bohlin@zenterio.com>
|
||||
Peter Zijlstra <peterz@infradead.org>
|
||||
Petr Malat <oss@malat.biz>
|
||||
Petr Uzel <petr.uzel@suse.cz>
|
||||
Prakash Sangappa <prakash.sangappa@oracle.com>
|
||||
Raghavendra D Prabhu <me@rdprabhu.com>
|
||||
Rahul Bedarkar <rpal143@gmail.com>
|
||||
Ram Pai <linuxram@us.ibm.com>
|
||||
Richard Knutsson <richard.knutsson@abelko.se>
|
||||
Rik van Riel <riel@redhat.com>
|
||||
Scott Vokes <vokes.s@gmail.com>
|
||||
Seonghun Lim <wariua@gmail.com>
|
||||
Stas Sergeev <stsp@list.ru>
|
||||
Stefan Puiu <stefan.puiu@gmail.com>
|
||||
Thomas Gleixner <tglx@linutronix.de>
|
||||
Tobias Klausmann <klausman@schwarzvogel.de>
|
||||
Tomas Pospisek <tpo@sourcepole.ch>
|
||||
Tyler Hicks <tyhicks@canonical.com>
|
||||
Victor Porton <porton@narod.ru>
|
||||
Walter Harms <wharms@bfs.de>
|
||||
Wesley Aptekar-Cassels <w.aptekar@gmail.com>
|
||||
Yubin Ruan <ablacktshirt@gmail.com>
|
||||
Zack Weinberg <zackw@panix.com>
|
||||
Дилян Палаузов <dilyan.palauzov@aegee.org>
|
||||
|
||||
Apologies if I missed anyone!
|
||||
|
||||
|
||||
New and rewritten pages
|
||||
-----------------------
|
||||
|
||||
pthread_spin_init.3
|
||||
Michael Kerrisk [Peter Zijlstra, Thomas Gleixner, Zack Weinberg,
|
||||
Florian Weimer]
|
||||
New page describing pthread_spin_init(3) and pthread_spin_destroy(3)
|
||||
|
||||
pthread_spin_lock.3
|
||||
Michael Kerrisk [Carlos O'Donell]
|
||||
New page describing functions that lock and unlock spin locks
|
||||
Add a page describing pthread_spin_lock(3), pthread_spin_unlock(3),
|
||||
and pthread_spin_trylock(3).
|
||||
|
||||
smartpqi.4
|
||||
Don Brace [Michael Kerrisk, G. Branden Robinson]
|
||||
Document the smartpqi SCSI driver
|
||||
|
||||
veth.4
|
||||
Tomáš Pospíšek, Eric Biederman, Michael Kerrisk
|
||||
New page document veth virtual ethernet devices
|
||||
Based on a page from Tomáš Pospíšek, with some clean-ups by mtk.
|
||||
|
||||
|
||||
Removed pages
|
||||
-------------
|
||||
|
||||
infnan.3:
|
||||
Michael Kerrisk
|
||||
This function was in libc4 and libc5, but never part
|
||||
of glibc. It ceased to be relevant nearly 20 years
|
||||
ago. Time to remove the man page.
|
||||
|
||||
|
||||
Newly documented interfaces in existing pages
|
||||
---------------------------------------------
|
||||
|
||||
ioctl_userfaultfd.2
|
||||
userfaultfd.2
|
||||
Prakash Sangappa [Andrea Arcangeli, Mike Rapoport]
|
||||
Add description for UFFD_FEATURE_SIGBUS
|
||||
|
||||
madvise.2
|
||||
Rik van Riel [Colm MacCárthaigh, Michael Kerrisk]
|
||||
Document MADV_WIPEONFORK and MADV_KEEPONFORK
|
||||
Michael Kerrisk
|
||||
Note fork() and execve() semantics for wipe-on-fork setting
|
||||
|
||||
membarrier.2
|
||||
Mathieu Desnoyers
|
||||
Update membarrier manpage for 4.14
|
||||
Add documentation for these new membarrier() commands:
|
||||
MEMBARRIER_CMD_PRIVATE_EXPEDITED
|
||||
MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED
|
||||
|
||||
memfd_create.2
|
||||
Mike Kravetz
|
||||
Add description of MFD_HUGETLB (hugetlbfs) support
|
||||
hugetlbfs support for memfd_create() was recently merged by Linus
|
||||
and should be in the Linux 4.14 release. To request hugetlbfs
|
||||
support a new memfd_create() flag (MFD_HUGETLB) was added.
|
||||
|
||||
readv.2
|
||||
Christoph Hellwig
|
||||
Document RWF_NOWAIT added in Linux 4.14
|
||||
|
||||
seccomp.2
|
||||
Tyler Hicks
|
||||
Document the SECCOMP_GET_ACTION_AVAIL operation added in Linux 4.14
|
||||
Tyler Hicks
|
||||
Document the SECCOMP_FILTER_FLAG_LOG flag added in Linux 4.14
|
||||
Tyler Hicks
|
||||
Document the SECCOMP_RET_LOG action added In Linux 4.14
|
||||
Michael Kerrisk [Kees Cook]
|
||||
Add description of SECCOMP_RET_KILL_PROCESS
|
||||
Michael Kerrisk
|
||||
Add SECCOMP_RET_KILL_THREAD description and rework SECCOMP_RET_KILL text
|
||||
Michael Kerrisk
|
||||
Document the seccomp audit logging feature added in Linux 4.14
|
||||
|
||||
seccomp.2
|
||||
proc.5
|
||||
Tyler Hicks
|
||||
Document the seccomp /proc interfaces added in Linux 4.14
|
||||
Document the seccomp /proc interfaces in Linux 4.14:
|
||||
/proc/sys/kernel/seccomp/actions_avail and
|
||||
/proc/sys/kernel/seccomp/actions_logged.
|
||||
|
||||
sigaltstack.2
|
||||
Michael Kerrisk [Stas Sergeev]
|
||||
Document the SS_AUTODISARM flag added in Linux 4.7
|
||||
|
||||
proc.5
|
||||
Michael Kerrisk
|
||||
Document /proc/locks
|
||||
Oliver Ebert
|
||||
Document /proc/kpagecgroup
|
||||
Oliver Ebert
|
||||
Add KPF_BALLOON, KPF_ZERO_PAGE, and KPF_IDLE for /proc/kpageflags
|
||||
|
||||
pid_namespaces.7
|
||||
Michael Kerrisk
|
||||
Document /proc/sys/kernel/ns_last_pid
|
||||
|
||||
|
||||
New and changed links
|
||||
---------------------
|
||||
|
||||
pthread_spin_destroy.3
|
||||
Michael Kerrisk
|
||||
New link to new pthread_spin_init.3 page
|
||||
|
||||
pthread_spin_trylock.3
|
||||
pthread_spin_unlock.3
|
||||
Michael Kerrisk
|
||||
New links to new pthread_spin_lock.3 page
|
||||
|
||||
|
||||
Global changes
|
||||
--------------
|
||||
|
||||
Various pages
|
||||
Michael Kerrisk
|
||||
Consistently use "x86-64", not "x86_64"
|
||||
When referring to the architecture, consistently use "x86-64",
|
||||
not "x86_64". Hitherto, there was a mixture of usages, with
|
||||
"x86-64" predominant.
|
||||
|
||||
Various pages
|
||||
G. Branden Robinson
|
||||
Replace incorrect uses of Latin abbreviation "cf.".
|
||||
People seem to be using "cf." ("confere"), which means "compare",
|
||||
to mean "see" instead, for which the Latin abbreviation would be
|
||||
|
||||
|
||||
Changes to individual pages
|
||||
---------------------------
|
||||
|
||||
capget.2
|
||||
Michael Kerrisk
|
||||
Clarify discussion of kernels that have no VFS capability support
|
||||
|
||||
clock_getres.2
|
||||
Michael Kerrisk
|
||||
clock_gettime() may be implemented in the vDSO
|
||||
|
||||
clone.2
|
||||
Michael Kerrisk
|
||||
Warn that the clone() wrapper modifies child_stack in the parent
|
||||
Michael Kerrisk
|
||||
Rework the discussion of the historical CLONE_PID for clarity
|
||||
Michael Kerrisk
|
||||
Add NOTES heading
|
||||
Michael Kerrisk
|
||||
Add a reference to new veth(4) page
|
||||
Michael Kerrisk
|
||||
Eliminate some redundant phrasing in discussion of "fn()"
|
||||
Michael Kerrisk
|
||||
Combine redundant paragraphs describing child_stack==NULL
|
||||
Michael Kerrisk
|
||||
Note that child_stack can be NULL when using the raw system call
|
||||
Michael Kerrisk
|
||||
Remove a redundant paragraph
|
||||
|
||||
connect.2
|
||||
Michael Kerrisk
|
||||
Clarify that ECONNREFUSED is for stream sockets
|
||||
|
||||
fcntl.2
|
||||
Michael Kerrisk [Jens Axboe]
|
||||
Inode read-write hints persist only until the filesystem is unmounted
|
||||
|
||||
flock.2
|
||||
Michael Kerrisk
|
||||
Move NFS details to a headed subsection
|
||||
Michael Kerrisk [Petr Uzel]
|
||||
Placing an exclusive lock over NFS requires the file is open for writing
|
||||
|
||||
fork.2
|
||||
Rik van Riel [Colm MacCárthaigh, Michael Kerrisk]
|
||||
Document effect of MADV_WIPEONFORK
|
||||
|
||||
fork.2
|
||||
getsid.2
|
||||
setpgid.2
|
||||
setsid.2
|
||||
Ahmad Fatoum
|
||||
Include <sys/types.h> in SYNOPSIS to obtain declaration of pid_t
|
||||
|
||||
fsync.2
|
||||
Craig Ringer
|
||||
ERRORS: add ENOSPC
|
||||
|
||||
getcpu.2
|
||||
Michael Kerrisk
|
||||
getcpu() may have an implementation in the vDSO
|
||||
|
||||
getpid.2
|
||||
Michael Kerrisk
|
||||
Mention that PID == TGID, and note contrast with TID
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add gettid(2)
|
||||
|
||||
getrandom.2
|
||||
Michael Kerrisk [Fabio Scotoni]
|
||||
ERRORS: add ENOSYS
|
||||
|
||||
getrlimit.2
|
||||
Michael Kerrisk [Scott Vokes]
|
||||
Make it clear RLIMIT_NPROC is a limit on current number of processes
|
||||
https://twitter.com/silentbicycle/status/893849097903505409
|
||||
|
||||
gettid.2
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add getpid(2)
|
||||
|
||||
gettimeofday.2
|
||||
Michael Kerrisk
|
||||
Note that gettimeofday() may be implemented in the vDSO
|
||||
|
||||
ioctl_userfaultfd.2
|
||||
Michael Kerrisk
|
||||
Rework version information for feature bits
|
||||
|
||||
io_submit.2
|
||||
Goldwyn Rodrigues
|
||||
Add iocb details to io_submit
|
||||
Add more information about the iocb structure. Explains the
|
||||
fields of the I/O control block structure which is passed to the
|
||||
io_submit() call.
|
||||
Michael Kerrisk
|
||||
Add cross-reference to io_getevents(2)
|
||||
Michael Kerrisk
|
||||
Cross reference pwritev(2) in discussion of RWF_SYNC and RWF_DSYNC
|
||||
|
||||
membarrier.2
|
||||
Mathieu Desnoyers
|
||||
Update example to take TSO into account
|
||||
The existing example given specifically states that it focus on
|
||||
x86 (TSO memory model), but gives a read-read vs write-write
|
||||
ordering example, even though this scenario does not require
|
||||
explicit barriers on TSO.
|
||||
|
||||
So either we change the example architecture to a weakly-ordered
|
||||
architecture, or we change the example to a scenario requiring
|
||||
barriers on x86.
|
||||
|
||||
Let's stay on x86, but provide a Dekker as example instead.
|
||||
Mathieu Desnoyers
|
||||
Adapt the MEMBARRIER_CMD_SHARED return value documentation to
|
||||
reflect that it now returns -EINVAL when issued on a system
|
||||
configured for nohz_full.
|
||||
|
||||
memfd_create.2
|
||||
Michael Kerrisk
|
||||
Note the limit for size of 'name'
|
||||
|
||||
mkdir.2
|
||||
Michael Kerrisk [Raghavendra D Prabhu]
|
||||
ERRORS: document EINVAL error for invalid filename
|
||||
|
||||
mmap.2
|
||||
Michael Kerrisk
|
||||
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.
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add ftruncate(2)
|
||||
|
||||
mremap.2
|
||||
Mike Kravetz [Florian Weimer, Jann Horn]
|
||||
Add description of old_size == 0 functionality
|
||||
Since at least the 2.6 time frame, mremap() would create a new
|
||||
mapping of the same pages if 'old_size == 0'. It would also leave
|
||||
the original mapping. This was used to create a 'duplicate
|
||||
mapping'.
|
||||
|
||||
A recent change was made to mremap() so that an attempt to create a
|
||||
duplicate a private mapping will fail.
|
||||
Michael Kerrisk [Michal Hocko, Mike Kravetz]
|
||||
BUGS: describe older behavior for old_size==0 on private mappings
|
||||
Explain the older behavior, and why it changed. This is a
|
||||
follow-up to Mike Kravetz's patch documenting the behavior
|
||||
for old_size==0 with shared mappings.
|
||||
Michael Kerrisk
|
||||
Reformat EINVAL errors as a list
|
||||
|
||||
open.2
|
||||
Michael Kerrisk
|
||||
By contrast with O_RDONLY, no file permissions are required for O_PATH
|
||||
Note one of the significant advantages of O_PATH: many of the
|
||||
operations applied to O_PATH file descriptors don't require
|
||||
read permission, so there's no reason why the open() itself
|
||||
should require read permission.
|
||||
Michael Kerrisk
|
||||
Note use of O_PATH to provide O_EXEC functionality
|
||||
Michael Kerrisk
|
||||
Mention O_PATH file descriptor use with fexecve(3)
|
||||
Michael Kerrisk
|
||||
ERRORS: document EINVAL error for invalid filename
|
||||
Michael Kerrisk
|
||||
Clarify that O_TMPFILE creates a *regular* file
|
||||
Michael Kerrisk
|
||||
Make it explicit that O_CREAT creates a regular file
|
||||
Michael Kerrisk
|
||||
Since glibc 2.26, the open() wrapper always uses the openat() syscall
|
||||
Michael Kerrisk
|
||||
Change pathname used in discussion of rationale for openat()
|
||||
/path/to/file is a little confusing as a pathname
|
||||
Michael Kerrisk
|
||||
Make the purpose of open() a little clearer at the start of the page
|
||||
|
||||
open_by_handle_at.2
|
||||
NeilBrown
|
||||
Clarifications needed due to NFS reexport
|
||||
NeilBrown [Lennart Poettering]
|
||||
Clarify MAX_HANDLE_SZ
|
||||
As hinted in the kernel source, MAX_HANDLE_SZ is a hint
|
||||
rather than a promise.
|
||||
|
||||
pipe.2
|
||||
Michael Kerrisk [Marin H.]
|
||||
Since Linux 4.5, fcntl() can be used to set O_DIRECT for a pipe
|
||||
See https://bugzilla.kernel.org/show_bug.cgi?id=197917
|
||||
|
||||
pivot_root.2
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add switch_root(8)
|
||||
|
||||
pkey_alloc.2
|
||||
Breno Leitao
|
||||
Fix argument order
|
||||
Currently pkey_alloc() syscall has two arguments, and the very
|
||||
first argument is still not supported and should be set to zero.
|
||||
The second argument is the one that should specify the
|
||||
page access rights.
|
||||
|
||||
ptrace.2
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add ltrace(1)
|
||||
|
||||
reboot.2
|
||||
Michael Kerrisk [Michał Zegan]
|
||||
Fix bogus description of reboot() from non-initial PID namespace
|
||||
The current text was confused (mea culpa). No signal is sent to
|
||||
the init() process. Rather, depending on the 'cmd' given to
|
||||
reboot(), the 'group_exit_code' value will set to either SIGHUP or
|
||||
SIGINT, with the effect that one of those signals is reported to
|
||||
wait() in the parent process.
|
||||
|
||||
See https://bugzilla.kernel.org/show_bug.cgi?id=195899
|
||||
Michael Kerrisk
|
||||
SEE ALSO: remove reboot(8) (synonym for halt(8)); add shutdown(8)
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add systemctl(1), systemd(1)
|
||||
|
||||
recvmmsg.2
|
||||
sendmmsg.2
|
||||
Elliot Hughes
|
||||
Type fixes in SYNOPSIS
|
||||
[mtk: The raw system calls use "unsigned int", but the glibc
|
||||
wrappers have "int" for the 'flags' argument.]
|
||||
|
||||
sched_setaffinity.2
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add numactl(8)
|
||||
|
||||
sched_yield.2
|
||||
Michael Kerrisk [Peter Zijlstra]
|
||||
sched_yield() is intended for use with real-time scheduling policies
|
||||
|
||||
seccomp.2
|
||||
Michael Kerrisk [Adhemerval Zanella, Florian Weimer, Kees Cook]
|
||||
Add some Caveats regarding the use of seccomp filters
|
||||
Michael Kerrisk
|
||||
Document the "default" filter return action
|
||||
The kernel defaults to either SECCOMP_RET_KILL_PROCESS
|
||||
or SECCOMP_RET_KILL_THREAD for unrecognized filter
|
||||
return action values.
|
||||
Michael Kerrisk [Kees Cook]
|
||||
Change SECCOMP_RET_ACTION to SECCOMP_RET_ACTION_FULL
|
||||
In Linux 4.14, the action component of the return value
|
||||
switched from being 15 bits to being 16 bits. A new macro,
|
||||
SECCOMP_RET_ACTION_FULL, that masks the 16 bits was added,
|
||||
to replace the older SECCOMP_RET_ACTION.
|
||||
Michael Kerrisk
|
||||
Explicitly note that other threads survive SECCOMP_RET_KILL_THREAD
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add strace(1)
|
||||
|
||||
send.2
|
||||
Grégory Vander Schueren
|
||||
Add EALREADY to ERRORS
|
||||
|
||||
setns.2
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add nsenter(1)
|
||||
|
||||
shmop.2
|
||||
Yubin Ruan
|
||||
Note that return value of shmat() is page-aligned
|
||||
|
||||
sigaction.2
|
||||
Michael Kerrisk
|
||||
Rework discussion of SA_SIGINFO handler arguments
|
||||
Expand and rework the text a little, in particular adding
|
||||
a reference to sigreturn(2) as a source of further
|
||||
information about the ucontext argument.
|
||||
Michael Kerrisk
|
||||
Mention that libc sets the act.sa_restorer field
|
||||
|
||||
sigaltstack.2
|
||||
Michael Kerrisk [Walter Harms]
|
||||
Reword BUGS text to be a little clearer
|
||||
Michael Kerrisk
|
||||
Add explicit error handling to example code
|
||||
Michael Kerrisk
|
||||
Add use of sigaction() to example code
|
||||
|
||||
sigreturn.2
|
||||
Michael Kerrisk
|
||||
Make it a little clearer that a stack frame is created by the kernel
|
||||
Michael Kerrisk
|
||||
glibc has a simple wrapper for sigreturn() that returns ENOSYS
|
||||
|
||||
splice.2
|
||||
Michael Kerrisk
|
||||
Since Linux 2.6.31,'fd_in' and 'fd_out' may both refer to pipes
|
||||
|
||||
stat.2
|
||||
Michael Kerrisk [Richard Knutsson]
|
||||
Use lstat() instead of stat()
|
||||
It's more logical to use lstat() in the example code,
|
||||
since one can then experiment with symbolic links, and
|
||||
also the S_IFLNK case can also occur.
|
||||
NeilBrown
|
||||
Correct AT_NO_AUTOMOUNT text and general revisions
|
||||
Expand on the relationship between fstatat() and the other three
|
||||
functions, and improve the description of AT_NO_AUTOMOUNT.
|
||||
Specifically, both stat() and lstat() act the same way with
|
||||
respect to automounts, and that behavior matches fstatat() with
|
||||
the AT_NO_AUTOMOUNT flag.
|
||||
|
||||
statfs.2
|
||||
Michael Kerrisk
|
||||
Add some comments noting filesystems that are no longer current
|
||||
Michael Kerrisk
|
||||
Add comments describing a few filesystem types
|
||||
|
||||
time.2
|
||||
Michael Kerrisk
|
||||
Note that time() may be implemented in the vDSO
|
||||
Michael Kerrisk [Victor Porton]
|
||||
Language fix-up: clarify that "tasks" means "work"
|
||||
See https://bugzilla.kernel.org/show_bug.cgi?id=197183
|
||||
|
||||
userfaultfd.2
|
||||
Mike Rapoport
|
||||
BUGS: document spurious UFFD_EVENT_FORK
|
||||
|
||||
write.2
|
||||
fsync.2
|
||||
close.2
|
||||
NeilBrown [Jeff Layton]
|
||||
Update description of error codes
|
||||
Since 4.13, errors from writeback are more reliably reported
|
||||
to all file descriptors that might be relevant.
|
||||
|
||||
Add notes to this effect, and also add detail about ENOSPC and
|
||||
EDQUOT which can be delayed in a similar many to EIO - for NFS
|
||||
in particular.
|
||||
|
||||
abort.3
|
||||
Michael Kerrisk
|
||||
Starting with glibc 2.27, abort() does not attempt to flush streams
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add assert(3)
|
||||
|
||||
backtrace_symbols_fd(3)
|
||||
Stefan Puiu [Walter Harms]
|
||||
backtrace_symbols_fd() can trigger a call to malloc()
|
||||
|
||||
daemon.3
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add daemon(7), logrotate(8)
|
||||
|
||||
errno.3
|
||||
Michael Kerrisk
|
||||
Note use of errno(1) to look up error names and numbers
|
||||
Michael Kerrisk
|
||||
Update error list for POSIX.1-2008
|
||||
POSIX.1-2008 specified a couple of new errors not present in
|
||||
POSIX.1-2001.
|
||||
Michael Kerrisk [Walter Harms]
|
||||
Note the use of perror(3) and strerror(3)
|
||||
Michael Kerrisk
|
||||
Recast the advice against manually declaring 'errno'
|
||||
Recast the advice against manually declaring 'errno' to
|
||||
a more modern perspective. It's 13 years since the original
|
||||
text was added, and even then it was describing old behavior.
|
||||
Cast the description to be about behavior further away in
|
||||
time, and note more clearly that manual declaration will
|
||||
cause problems with modern C libraries.
|
||||
Michael Kerrisk
|
||||
Add some missing errors
|
||||
Michael Kerrisk
|
||||
Error numbers are positive values (rather than nonzero values)
|
||||
POSIX.1-2008 noted the explicitly the change (to align with
|
||||
the C standards) that error numbers are positive, rather
|
||||
than nonzero.
|
||||
Michael Kerrisk
|
||||
Reorganize the text and and some subheadings
|
||||
Restructure the text and add some subheadings for better
|
||||
readability. No (intentional) content changes.
|
||||
Michael Kerrisk [Wesley Aptekar-Cassels]
|
||||
Note that error numbers vary somewhat across architectures
|
||||
Added after a patch from Wesley Aptekar-Cassels that proposed
|
||||
to add error numbers to the text.
|
||||
Michael Kerrisk
|
||||
Note the <errno.h> also provides the symbolic error names
|
||||
Michael Kerrisk [Walter Harms]
|
||||
Explicitly note that error numbers vary also across UNIX systems
|
||||
|
||||
exec.3
|
||||
Michael Kerrisk
|
||||
glibc 2.24 dropped CWD from the default path
|
||||
Document the glibc 2.24 change that dropped CWD from the default
|
||||
search path employed by execlp(), execvp() and execvpe() when
|
||||
PATH is not defined.
|
||||
|
||||
fexecve.3
|
||||
Michael Kerrisk
|
||||
O_PATH file descriptors are also usable with fexecve()
|
||||
Cristian Rodríguez
|
||||
fexecve() is now implemented with execveat(2), where available
|
||||
Michael Kerrisk
|
||||
Add some detail on the glibc implementation of fexecve() via execveat(2)
|
||||
|
||||
ffs.3
|
||||
Michael Kerrisk
|
||||
glibc 2.27 relaxes the FTM requirements for ffsl() and ffsll()
|
||||
|
||||
get_nprocs_conf.3
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add nproc(1)
|
||||
|
||||
lround.3
|
||||
Michael Kerrisk [David Eckardt]
|
||||
Clarify that lround() rounds *halfway cases" away from zero
|
||||
See https://bugzilla.kernel.org/show_bug.cgi?id=194601
|
||||
|
||||
makedev.3
|
||||
Adrian Bunk
|
||||
glibc has deprecated exposing the definitions via <sys/types.h>
|
||||
|
||||
mallinfo.3
|
||||
Jakub Wilk
|
||||
Fix the example
|
||||
Remove reference to non-standard "tlpi_hdr.h" and replace calls to
|
||||
functions that were declared in this header.
|
||||
|
||||
malloc.3
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add valgrind(1)
|
||||
|
||||
popen.3
|
||||
Michael Kerrisk
|
||||
Add a cross reference to Caveats in system(3)
|
||||
All of the same risks regarding system() also apply to popen().
|
||||
|
||||
pthread_detach.3
|
||||
Michael Kerrisk [Rahul Bedarkar]
|
||||
Improve sentence describing freeing of resources on process termination
|
||||
As reported by Rahul, the existing sentence could be read as
|
||||
meaning that resources of joined and terminated detached
|
||||
threads are freed only at process termination. Eliminate
|
||||
that possible misreading.
|
||||
|
||||
pthread_yield.3
|
||||
Michael Kerrisk [Peter Zijlstra]
|
||||
pthread_yield() is intended for use with real-time scheduling policies
|
||||
|
||||
setlocale.3
|
||||
Michael Kerrisk [Křištof Želechovski]
|
||||
The standards do not specify all of the locale categories
|
||||
|
||||
sockatmark.3
|
||||
Seonghun Lim
|
||||
Fix cruft in code example
|
||||
|
||||
stdio.3
|
||||
Michael Kerrisk
|
||||
Use proper section cross references in function list
|
||||
Michael Kerrisk
|
||||
Remove crufty reference to pc(1)
|
||||
|
||||
sysconf.3
|
||||
Michael Kerrisk
|
||||
Mention get_nprocs_conf(3)
|
||||
Mention get_nprocs_conf(3) in discussion of _SC_NPROCESSORS_CONF
|
||||
and _SC_NPROCESSORS_ONLN.
|
||||
|
||||
system.3
|
||||
Michael Kerrisk [Bastien Roucaries]
|
||||
Create a "Caveats" subsection to hold warnings about the use of system()
|
||||
See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=882222
|
||||
Michael Kerrisk [Bastien Roucaries]
|
||||
Mention PATH explicitly in discussion of system() and set-UID programs
|
||||
Michael Kerrisk [Bastien Roucaries]
|
||||
Note that user input for system() should be carefully sanitized
|
||||
Michael Kerrisk
|
||||
Mention file capabilities in discussion of privileged programs
|
||||
Michael Kerrisk
|
||||
Correctly note which shell Debian uses as (noninteractive) /bin/sh
|
||||
|
||||
core.5
|
||||
Michael Kerrisk
|
||||
Add some notes on systemd and core dumps
|
||||
Michael Kerrisk
|
||||
Dumps are not produced if core_pattern is empty and core_uses_pid is 0
|
||||
Michael Kerrisk [Per Böhlin]
|
||||
RLIMIT_CORE is not enforced when piping core dump to a program
|
||||
Michael Kerrisk
|
||||
SEE ALO: add systemd-coredump(8)
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add coredumpctl(1)
|
||||
|
||||
filesystems.5
|
||||
Michael Kerrisk [Jonny Grant]
|
||||
Replace crufty URL reference for 'smb' with up-to-date URL
|
||||
Michael Kerrisk [Jonny Grant]
|
||||
Refer to VFAT as an extended FAT (not DOS) filesystem
|
||||
|
||||
proc.5
|
||||
Michael Kerrisk [Miklos Szered, Ram Pai]
|
||||
Correct the description of the parent mount ID for /proc/PID/mountinfo
|
||||
Oliver Ebert
|
||||
Add mmap-exclusive bit for /proc/[pid]/pagemap
|
||||
Marcus Folkesson
|
||||
Update description of /proc/<pid>/oom_score
|
||||
Lucas Werkmeister
|
||||
Clarify permissions in /proc/[pid]/fd/
|
||||
Michael Kerrisk
|
||||
Add reference to pid_namespaces(7) for /proc/sys/kernel/ns_last_pid
|
||||
|
||||
shells.5
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add pam_shells(8)
|
||||
|
||||
sysfs.5
|
||||
Michael Kerrisk
|
||||
Add a brief explanation of /sys/kernel
|
||||
Michael Kerrisk
|
||||
Add a brief description of /sys/class/net
|
||||
Michael Kerrisk
|
||||
Add a brief description of /sys/kernel/mm
|
||||
Michael Kerrisk
|
||||
Add brief description of /sys/kernel/debug/tracing
|
||||
Michael Kerrisk
|
||||
Add a description of /sys/kernel/mm/hugepages
|
||||
|
||||
arp.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add arpd(8)
|
||||
|
||||
capabilities.7
|
||||
Michael Kerrisk
|
||||
Add a reference to xattr(7) in the discussion of extended attributes
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add captest(8)
|
||||
|
||||
epoll.7
|
||||
Michael Kerrisk
|
||||
Note existence of kcmp() KCMP_EPOLL_TFD operation
|
||||
|
||||
fifo.7
|
||||
Michael Kerrisk
|
||||
Refer reader to pipe(7) for details of I/O semantics of FIFOs
|
||||
|
||||
hier.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add file-hierarchy(7)
|
||||
|
||||
icmp.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add rdisc(8)
|
||||
|
||||
man-pages.7
|
||||
Michael Kerrisk
|
||||
Note that "x86-64" is generally preferred over "x86_64"
|
||||
G. Branden Robinson
|
||||
Add a use case for real minus character
|
||||
|
||||
namespaces.7
|
||||
Michael Kerrisk
|
||||
Add a reference to new veth(4) page
|
||||
Michael Kerrisk
|
||||
EXAMPLE: refer also to example in clone(2)
|
||||
|
||||
pid_namespaces.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add reboot(2)
|
||||
Add because reboot(2) has special semantics for non-initial
|
||||
PID namespaces.
|
||||
|
||||
pthreads.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add pthread_spin_init(3) and pthread_spin_lock(3)
|
||||
|
||||
socket.7
|
||||
Michael Kerrisk [Petr Malat, Tobias Klausmann]
|
||||
Correct the description of SO_RXQ_OVFL
|
||||
|
||||
standards.7
|
||||
Michael Kerrisk
|
||||
SEE ALSO: add getconf(1), confstr(3), pathconf(3), sysconf(3)
|
||||
|
||||
user_namespaces.7
|
||||
Christian Brauner [Michael Kerrisk]
|
||||
Document new 340 line idmap limit
|
||||
|
||||
ld.so.8
|
||||
Michael Kerrisk [Yubin Ruan]
|
||||
Simplify language around conferring capabilities
|
||||
The statement "conferring permitted or effective capabilities"
|
||||
to the process is somewhat redundant. Binaries with capabilities
|
||||
confer capabilities only to those process capability sets, so it's
|
||||
simpler to just say "confers capabilities to the process".
|
||||
|
|
|
|||
Loading…
Reference in New Issue