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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 13:34:54 +0300 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 21:15:58 +0300 |
| commit | cbfe20f565228966f0249f016752437df95df679 (patch) | |
| tree | 240bf1cf3759fc5162ed2894e127ab3b30740bad /include/linux | |
| parent | 03450e271a160bc07a2c48e5769e0ba338582d77 (diff) | |
| download | linux-cbfe20f565228966f0249f016752437df95df679.tar.xz | |
fs: add do_faccessat() helper and ksys_access() wrapper; remove in-kernel calls to syscall
Using the fs-internal do_faccessat() helper allows us to get rid of
fs-internal calls to the sys_faccessat() syscall.
Introducing the ksys_access() wrapper allows us to avoid the in-kernel
calls to the sys_access() 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_access().
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>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/syscalls.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index dd6c306f4f00..33f06de090ea 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -1014,4 +1014,11 @@ static inline int ksys_chmod(const char __user *filename, umode_t mode) return do_fchmodat(AT_FDCWD, filename, mode); } +extern long do_faccessat(int dfd, const char __user *filename, int mode); + +static inline long ksys_access(const char __user *filename, int mode) +{ + return do_faccessat(AT_FDCWD, filename, mode); +} + #endif |