Re: [PATCH v12 01/12] lib: introduce copy_struct_{to, from}_user helpers

[PATCH v12 00/12] namei: openat2(2) path resolution restrictions · Aleksa Sarai <hidden> · 2019-09-04
[PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-04
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Linus Torvalds <torvalds@linux-foundation.org> · 2019-09-04
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Randy Dunlap <hidden> · 2019-09-04
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Peter Zijlstra <peterz@infradead.org> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Peter Zijlstra <peterz@infradead.org> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Peter Zijlstra <peterz@infradead.org> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-11
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Rasmus Villemoes <linux@rasmusvillemoes.dk> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Christian Brauner <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Christian Brauner <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Rasmus Villemoes <linux@rasmusvillemoes.dk> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Christian Brauner <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Christian Brauner <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Christian Brauner <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Al Viro <viro@zeniv.linux.org.uk> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Christian Brauner <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Al Viro <viro@zeniv.linux.org.uk> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Christian Brauner <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Al Viro <viro@zeniv.linux.org.uk> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Christian Brauner <hidden> · 2019-09-06
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Al Viro <viro@zeniv.linux.org.uk> · 2019-09-05
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Aleksa Sarai <hidden> · 2019-09-06
Re: [PATCH v12 01/12] lib: introduce copy_struct_{to,from}_user helpers · Al Viro <viro@zeniv.linux.org.uk> · 2019-09-06
[PATCH v12 02/12] clone3: switch to copy_struct_from_user() · Aleksa Sarai <hidden> · 2019-09-04
[PATCH v12 03/12] sched_setattr: switch to copy_struct_{to,from}_user() · Aleksa Sarai <hidden> · 2019-09-04
[PATCH v12 04/12] perf_event_open: switch to copy_struct_from_user() · Aleksa Sarai <hidden> · 2019-09-04
[PATCH v12 05/12] namei: obey trailing magic-link DAC permissions · Aleksa Sarai <hidden> · 2019-09-04
Re: [PATCH v12 05/12] namei: obey trailing magic-link DAC permissions · Jann Horn <jannh@google.com> · 2019-09-17
Re: [PATCH v12 05/12] namei: obey trailing magic-link DAC permissions · Aleksa Sarai <hidden> · 2019-09-18
Re: [PATCH v12 05/12] namei: obey trailing magic-link DAC permissions · Aleksa Sarai <hidden> · 2019-09-18
[PATCH v12 06/12] procfs: switch magic-link modes to be more sane · Aleksa Sarai <hidden> · 2019-09-04
[PATCH v12 07/12] open: O_EMPTYPATH: procfs-less file descriptor re-opening · Aleksa Sarai <hidden> · 2019-09-04
[PATCH v12 08/12] namei: O_BENEATH-style path resolution flags · Aleksa Sarai <hidden> · 2019-09-04
[PATCH v12 09/12] namei: LOOKUP_IN_ROOT: chroot-like path resolution · Aleksa Sarai <hidden> · 2019-09-04
[PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution · Aleksa Sarai <hidden> · 2019-09-04
Re: [PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution · Linus Torvalds <torvalds@linux-foundation.org> · 2019-09-04
Re: [PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution · Linus Torvalds <torvalds@linux-foundation.org> · 2019-09-04
Re: [PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution · Linus Torvalds <torvalds@linux-foundation.org> · 2019-09-04
Re: [PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution · Aleksa Sarai <hidden> · 2019-09-04
Re: [PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution · Linus Torvalds <torvalds@linux-foundation.org> · 2019-09-04
Re: [PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution · David Howells <dhowells@redhat.com> · 2019-09-04
Re: [PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution · Linus Torvalds <torvalds@linux-foundation.org> · 2019-09-04
Re: [PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution · Al Viro <viro@zeniv.linux.org.uk> · 2019-09-04
Re: [PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution · Linus Torvalds <torvalds@linux-foundation.org> · 2019-09-04
[PATCH v12 11/12] open: openat2(2) syscall · Aleksa Sarai <hidden> · 2019-09-04
Re: [PATCH v12 11/12] open: openat2(2) syscall · Randy Dunlap <hidden> · 2019-09-04
Re: [PATCH v12 11/12] open: openat2(2) syscall · Jeff Layton <jlayton@kernel.org> · 2019-09-07
Re: [PATCH v12 11/12] open: openat2(2) syscall · Linus Torvalds <torvalds@linux-foundation.org> · 2019-09-07
Re: [PATCH v12 11/12] open: openat2(2) syscall · Andy Lutomirski <luto@amacapital.net> · 2019-09-07
Re: [PATCH v12 11/12] open: openat2(2) syscall · Linus Torvalds <torvalds@linux-foundation.org> · 2019-09-07
Re: [PATCH v12 11/12] open: openat2(2) syscall · Andy Lutomirski <luto@amacapital.net> · 2019-09-07
Re: [PATCH v12 11/12] open: openat2(2) syscall · Ingo Molnar <mingo@kernel.org> · 2019-09-10
Re: [PATCH v12 11/12] open: openat2(2) syscall · Aleksa Sarai <hidden> · 2019-09-08
[PATCH v12 12/12] selftests: add openat2(2) selftests · Aleksa Sarai <hidden> · 2019-09-04

From: Linus Torvalds <torvalds@linux-foundation.org>
Date: 2019-09-04 20:54:23
Also in: linux-api, linux-arch, linux-arm-kernel, linux-fsdevel, linux-kselftest, linux-mips, linux-s390, linux-sh, linuxppc-dev, lkml, sparclinux

On Wed, Sep 4, 2019 at 1:20 PM Aleksa Sarai [off-list ref] wrote:

A common pattern for syscall extensions is increasing the size of a
struct passed from userspace, such that the zero-value of the new fields
result in the old kernel behaviour (allowing for a mix of userspace and
kernel vintages to operate on one another in most cases).

Ack, this makes the whole series (and a few unrelated system calls) cleaner.

           Linus

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