fs: add ksys_chdir() helper; remove in-kernel calls to sys_chdir()

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Using this helper allows us to avoid the in-kernel calls to the sys_chdir()
syscall. The ksys_ prefix denotes that this function is meant as a drop-in
replacement for the syscall. In particular, it uses the same calling
convention as sys_chdir().

This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net

Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

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Dominik Brodowski 2018-03-11 11:34:46 +01:00

parent e7a3e8b2ed

commit 447016e968

5 changed files with 13 additions and 7 deletions

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include/linux/syscalls.h

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