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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-11 13:34:54 +0300
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 21:15:58 +0300
commitcbfe20f565228966f0249f016752437df95df679 (patch)
tree240bf1cf3759fc5162ed2894e127ab3b30740bad /init
parent03450e271a160bc07a2c48e5769e0ba338582d77 (diff)
downloadlinux-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 'init')
-rw-r--r--init/main.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c
index b8649d1466e1..d0ded4322c6b 100644
--- a/init/main.c
+++ b/init/main.c
@@ -1087,7 +1087,8 @@ static noinline void __init kernel_init_freeable(void)
if (!ramdisk_execute_command)
ramdisk_execute_command = "/init";
- if (sys_access((const char __user *) ramdisk_execute_command, 0) != 0) {
+ if (ksys_access((const char __user *)
+ ramdisk_execute_command, 0) != 0) {
ramdisk_execute_command = NULL;
prepare_namespace();
}