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authorEric W. Biederman <ebiederm@xmission.com>2009-11-20 16:08:56 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2009-12-11 11:24:54 -0800
commit832b6af198aefe6034310e124594cc8b833c0ef9 (patch)
tree853eec8f7449dd7fc51c6d4c9b70ea44b81cf0d9 /fs/namei.c
parenta16bbc3430ed94b543222f4c8ef68025f8493e93 (diff)
sysfs: Propagate renames to the vfs on demand
By teaching sysfs_revalidate to hide a dentry for a sysfs_dirent if the sysfs_dirent has been renamed, and by teaching sysfs_lookup to return the original dentry if the sysfs dirent has been renamed. I can show the results of renames correctly without having to update the dcache during the directory rename. This massively simplifies the rename logic allowing a lot of weird sysfs special cases to be removed along with a lot of now unnecesary helper code. Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c22
1 files changed, 0 insertions, 22 deletions
diff --git a/fs/namei.c b/fs/namei.c
index d11f404667e9..d3c190c35fcc 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1279,28 +1279,6 @@ struct dentry *lookup_one_len(const char *name, struct dentry *base, int len)
return __lookup_hash(&this, base, NULL);
}
-/**
- * lookup_one_noperm - bad hack for sysfs
- * @name: pathname component to lookup
- * @base: base directory to lookup from
- *
- * This is a variant of lookup_one_len that doesn't perform any permission
- * checks. It's a horrible hack to work around the braindead sysfs
- * architecture and should not be used anywhere else.
- *
- * DON'T USE THIS FUNCTION EVER, thanks.
- */
-struct dentry *lookup_one_noperm(const char *name, struct dentry *base)
-{
- int err;
- struct qstr this;
-
- err = __lookup_one_len(name, &this, base, strlen(name));
- if (err)
- return ERR_PTR(err);
- return __lookup_hash(&this, base, NULL);
-}
-
int user_path_at(int dfd, const char __user *name, unsigned flags,
struct path *path)
{