From: Dominik Brodowski <linux@dominikbrodowski.net>
To: linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
viro@ZenIV.linux.org.uk, arnd@arndb.de,
linux-arch@vger.kernel.org
Cc: "Eric W . Biederman" <ebiederm@xmission.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Any chance that kernel/uid6.c can go? [Was: [PATCH 22/45] kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c]
Date: Thu, 22 Mar 2018 11:21:40 +0100 [thread overview]
Message-ID: <20180322102140.GA14294@light.dominikbrodowski.net> (raw)
In-Reply-To: <20180322090059.19361-23-linux@dominikbrodowski.net>
On Thu, Mar 22, 2018 at 10:00:36AM +0100, Dominik Brodowski wrote:
> Using these helpers allows us to avoid the in-kernel calls to these
> syscalls: sys_setregid(), sys_setgid(), sys_setreuid(), sys_setuid(),
> sys_setresuid(), sys_setresgid(), sys_setfsuid(), and sys_setfsgid().
>
> The ksys_ prefix denotes that these function are meant as a drop-in
> replacement for the syscall. In particular, they use the same calling
> convention.
>
> This patch is part of a series which tries to remove in-kernel calls to
> syscalls. On this basis, the syscall entry path can be streamlined.
>
> Cc: Al Viro <viro@ZenIV.linux.org.uk>
> Cc: Eric W. Biederman <ebiederm@xmission.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
> ---
> kernel/sys.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++--------
> kernel/uid16.c | 19 ++++++++++---------
In its header, kernel/uid16.c says, since 2.3.39 was released in January
2000:
* Wrapper functions for 16bit uid back compatibility. All nicely tied
* together in the faint hope we can take the out in five years time.
Are we any closer to removing these wrappers?
Thanks,
Dominik
next prev parent reply other threads:[~2018-03-22 10:21 UTC|newest]
Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-22 9:00 [PATCH 00/45] remove in-kernel syscall invocations (part 3 == remainder outside arch/) Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 01/45] fs: add ksys_getdents64() helper; remove in-kernel calls to sys_getdents64() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 02/45] fs: add ksys_ioctl() helper; remove in-kernel calls to sys_ioctl() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 03/45] fs: add ksys_lseek() helper; remove in-kernel calls to sys_lseek() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 04/45] fs: add ksys_read() helper; remove in-kernel calls to sys_read() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 05/45] fs: add ksys_sync() helper; remove in-kernel calls to sys_sync() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 06/45] fs: add do_lookup_dcookie() helper; remove in-kernel call to syscall Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 07/45] fs: add do_vmsplice() " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 08/45] fs: add kern_select() helper; remove in-kernel call to sys_select() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 09/45] fs: add ksys_truncate() wrapper; remove in-kernel calls to sys_truncate() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 10/45] fs: add ksys_p{read,write}64() helpers; remove in-kernel calls to syscalls Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 11/45] fs: add ksys_fallocate() wrapper; remove in-kernel calls to sys_fallocate() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 12/45] fs: add do_compat_fcntl64() helper; remove in-kernel call to comapt syscall Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 13/45] fs: add do_compat_select() " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 14/45] fs: add do_compat_signalfd4() " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 15/45] fs: add do_compat_futimesat() " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 16/45] inotify: add do_inotify_init() helper; remove in-kernel call to syscall Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-26 12:25 ` Jan Kara
2018-03-26 12:25 ` Jan Kara
2018-03-22 9:00 ` [PATCH 17/45] fanotify: add do_fanotify_mark() " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-26 12:25 ` Jan Kara
2018-03-26 12:25 ` Jan Kara
2018-03-22 9:00 ` [PATCH 18/45] fs/quota: add kernel_quotactl() " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-26 12:26 ` Jan Kara
2018-03-26 12:26 ` Jan Kara
2018-03-22 9:00 ` [PATCH 19/45] fs/quota: use COMPAT_SYSCALL_DEFINE for sys32_quotactl() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-26 12:33 ` Jan Kara
2018-03-26 12:33 ` Jan Kara
2018-03-22 9:00 ` [PATCH 20/45] kernel: add do_compat_sigaltstack() helper; remove in-kernel call to compat syscall Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 21/45] kernel: add ksys_setsid() helper; remove in-kernel call to sys_setsid() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 22/45] kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 10:21 ` Dominik Brodowski [this message]
2018-03-22 10:21 ` Any chance that kernel/uid6.c can go? [Was: [PATCH 22/45] kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c] Dominik Brodowski
2018-03-22 17:57 ` Linus Torvalds
2018-03-22 17:57 ` Linus Torvalds
2018-03-22 9:00 ` [PATCH 23/45] sched: add do_sched_yield() helper; remove in-kernel call to sched_yield() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 17:29 ` Peter Zijlstra
2018-03-22 17:29 ` Peter Zijlstra
2018-03-22 17:41 ` Dominik Brodowski
2018-03-22 17:41 ` Dominik Brodowski
2018-03-22 17:44 ` Linus Torvalds
2018-03-22 17:44 ` Linus Torvalds
2018-03-22 9:00 ` [PATCH 24/45] kexec: call do_kexec_load() in compat syscall directly Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 25/45] mm: add kernel_migrate_pages() helper, move compat syscall to mm/mempolicy.c Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 26/45] mm: add kernel_move_pages() helper, move compat syscall to mm/migrate.c Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 27/45] mm: add kernel_mbind() helper; remove in-kernel call to syscall Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 28/45] mm: add kernel_[sg]et_mempolicy() helpers; remove in-kernel calls to syscalls Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 29/45] mm: add ksys_readahead() helper; remove in-kernel calls to sys_readahead() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 30/45] ipc: add semtimedop syscall/compat_syscall wrappers Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 31/45] ipc: add semget syscall wrapper Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 32/45] ipc: add semctl syscall/compat_syscall wrappers Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 33/45] ipc: add msgget syscall wrapper Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 34/45] ipc: add shmget " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 35/45] ipc: add shmdt " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 36/45] ipc: add shmctl syscall/compat_syscall wrappers Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 37/45] ipc: add msgctl " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 38/45] ipc: add msgrcv " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 39/45] ipc: add msgsnd " Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 40/45] x86: use _do_fork() in compat_sys_x86_clone() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:26 ` Thomas Gleixner
2018-03-22 9:26 ` Thomas Gleixner
2018-03-22 9:00 ` [PATCH 41/45] x86: remove compat_sys_x86_waitpid() Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:27 ` Thomas Gleixner
2018-03-22 9:27 ` Thomas Gleixner
2018-03-22 9:00 ` [PATCH 42/45] x86: fix sys_sigreturn() return type to be long, not unsigned long Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:27 ` Thomas Gleixner
2018-03-22 9:27 ` Thomas Gleixner
2018-03-22 9:00 ` [PATCH 43/45] x86/sigreturn: use SYSCALL_DEFINE0 Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:27 ` Thomas Gleixner
2018-03-22 9:27 ` Thomas Gleixner
2018-03-22 9:00 ` [PATCH 44/45] kernel/sys_ni: sort cond_syscall() entries Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 9:00 ` [PATCH 45/45] bpf: whitelist all syscalls for error injection Dominik Brodowski
2018-03-22 9:00 ` Dominik Brodowski
2018-03-22 20:29 ` [PATCH 00/45] remove in-kernel syscall invocations (part 3 == remainder outside arch/) Linus Torvalds
2018-03-22 20:29 ` Linus Torvalds
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180322102140.GA14294@light.dominikbrodowski.net \
--to=linux@dominikbrodowski.net \
--cc=akpm@linux-foundation.org \
--cc=arnd@arndb.de \
--cc=ebiederm@xmission.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=torvalds@linux-foundation.org \
--cc=viro@ZenIV.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox