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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 11:34:53 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:57 +0200 |
| commit | 03450e271a160bc07a2c48e5769e0ba338582d77 (patch) | |
| tree | 712f97925bdf4cc7e484f379a9d2355ae8629850 /init | |
| parent | 46ea89eb652a365e10257016d09dcf1aaf23cf63 (diff) | |
| download | lwn-03450e271a160bc07a2c48e5769e0ba338582d77.tar.gz lwn-03450e271a160bc07a2c48e5769e0ba338582d77.zip | |
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')
| -rw-r--r-- | init/initramfs.c | 6 |
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); } } |