From cbfe20f565228966f0249f016752437df95df679 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Sun, 11 Mar 2018 11:34:54 +0100 Subject: 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 Cc: Andrew Morton Signed-off-by: Dominik Brodowski --- init/main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'init') 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(); } -- cgit v1.2.3-70-g09d2