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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-11 11:34:53 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:15:57 +0200
commit03450e271a160bc07a2c48e5769e0ba338582d77 (patch)
tree712f97925bdf4cc7e484f379a9d2355ae8629850 /init/initramfs.c
parent46ea89eb652a365e10257016d09dcf1aaf23cf63 (diff)
fs: add ksys_fchmod() and do_fchmodat() helpers and ksys_chmod() wrapper; remove in-kernel calls to syscall
Using the fs-internal do_fchmodat() helper allows us to get rid of fs-internal calls to the sys_fchmodat() syscall. Introducing the ksys_fchmod() helper and the ksys_chmod() wrapper allows us to avoid the in-kernel calls to the sys_fchmod() and sys_chmod() syscalls. The ksys_ prefix denotes that these functions are meant as a drop-in replacement for the syscalls. In particular, they use the same calling convention as sys_fchmod() and sys_chmod(). 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/initramfs.c')
-rw-r--r--init/initramfs.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/init/initramfs.c b/init/initramfs.c
index 5855ab632b4e..16c3c23076e2 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -344,7 +344,7 @@ static int __init do_name(void)
if (wfd >= 0) {
sys_fchown(wfd, uid, gid);
- sys_fchmod(wfd, mode);
+ ksys_fchmod(wfd, mode);
if (body_len)
sys_ftruncate(wfd, body_len);
vcollected = kstrdup(collected, GFP_KERNEL);
@@ -354,14 +354,14 @@ static int __init do_name(void)
} else if (S_ISDIR(mode)) {
ksys_mkdir(collected, mode);
sys_chown(collected, uid, gid);
- sys_chmod(collected, mode);
+ ksys_chmod(collected, mode);
dir_add(collected, mtime);
} else if (S_ISBLK(mode) || S_ISCHR(mode) ||
S_ISFIFO(mode) || S_ISSOCK(mode)) {
if (maybe_link() == 0) {
ksys_mknod(collected, mode, rdev);
sys_chown(collected, uid, gid);
- sys_chmod(collected, mode);
+ ksys_chmod(collected, mode);
do_utime(collected, mtime);
}
}

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