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| author | Arnd Bergmann <arnd@arndb.de> | 2017-05-08 15:57:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-08 17:15:12 -0700 |
| commit | 046aa1265f08d8400bd4b63171238c9daba15ec3 (patch) | |
| tree | bdd079d995d88a6e415c7340a05e73c0e02e89f6 /init/initramfs.c | |
| parent | cff75e0b6fe835800f8e08a32d731119cd9e3b79 (diff) | |
| download | linux-stable-046aa1265f08d8400bd4b63171238c9daba15ec3.tar.gz linux-stable-046aa1265f08d8400bd4b63171238c9daba15ec3.tar.bz2 linux-stable-046aa1265f08d8400bd4b63171238c9daba15ec3.zip | |
initramfs: use vfs_stat/lstat directly
sys_newlstat is a system call implementation that is meant for user
space, and that copies kernel-internal data structure to the user
format, which is not needed for in-kernel users.
Further, as we rearrange the system call implementation so we can extend
it with 64-bit time_t, the prototype for sys_newlstat changes.
This changes the initramfs code to use vfs_lstat directly, to get it out
of the way of the time_t changes, and make it slightly more efficient in
the process. Along the same lines we also replace sys_stat and
sys_stat64 with vfs_stat.
Link: http://lkml.kernel.org/r/20170314214932.4052842-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init/initramfs.c')
| -rw-r--r-- | init/initramfs.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/init/initramfs.c b/init/initramfs.c index 9d180273ee8c..8a532050043f 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -312,10 +312,10 @@ static int __init maybe_link(void) static void __init clean_path(char *path, umode_t fmode) { - struct stat st; + struct kstat st; - if (!sys_newlstat(path, &st) && (st.st_mode ^ fmode) & S_IFMT) { - if (S_ISDIR(st.st_mode)) + if (!vfs_lstat(path, &st) && (st.mode ^ fmode) & S_IFMT) { + if (S_ISDIR(st.mode)) sys_rmdir(path); else sys_unlink(path); @@ -581,13 +581,13 @@ static void __init clean_rootfs(void) num = sys_getdents64(fd, dirp, BUF_SIZE); while (num > 0) { while (num > 0) { - struct stat st; + struct kstat st; int ret; - ret = sys_newlstat(dirp->d_name, &st); + ret = vfs_lstat(dirp->d_name, &st); WARN_ON_ONCE(ret); if (!ret) { - if (S_ISDIR(st.st_mode)) + if (S_ISDIR(st.mode)) sys_rmdir(dirp->d_name); else sys_unlink(dirp->d_name); |