From bae217ea8c7e123ed3fb1064909a262924771bbb Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Sun, 11 Mar 2018 11:34:56 +0100 Subject: fs: add ksys_open() wrapper; remove in-kernel calls to sys_open() Using this wrapper allows us to avoid the in-kernel calls to the sys_open() 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_open(). 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/initramfs.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'init/initramfs.c') diff --git a/init/initramfs.c b/init/initramfs.c index ce2bcad97cdf..5f2ff1d2370e 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -340,7 +340,7 @@ static int __init do_name(void) int openflags = O_WRONLY|O_CREAT; if (ml != 1) openflags |= O_TRUNC; - wfd = sys_open(collected, openflags, mode); + wfd = ksys_open(collected, openflags, mode); if (wfd >= 0) { ksys_fchown(wfd, uid, gid); @@ -567,7 +567,7 @@ static void __init clean_rootfs(void) struct linux_dirent64 *dirp; int num; - fd = sys_open("/", O_RDONLY, 0); + fd = ksys_open("/", O_RDONLY, 0); WARN_ON(fd < 0); if (fd < 0) return; @@ -629,7 +629,7 @@ static int __init populate_rootfs(void) } printk(KERN_INFO "rootfs image is not initramfs (%s)" "; looks like an initrd\n", err); - fd = sys_open("/initrd.image", + fd = ksys_open("/initrd.image", O_WRONLY|O_CREAT, 0700); if (fd >= 0) { ssize_t written = xwrite(fd, (char *)initrd_start, -- cgit v1.2.3-55-g7522