| From | Valerie Aurora <> | Subject | [PATCH 28/41] union-mount: call do_whiteout() on unlink and rmdir | Date | Wed, 21 Oct 2009 12:19:26 -0700 |
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From: Jan Blunck <jblunck@suse.de>
Call do_whiteout() when removing files and directories.
Signed-off-by: Jan Blunck <jblunck@suse.de> Signed-off-by: Valerie Aurora <vaurora@redhat.com> --- fs/namei.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/fs/namei.c b/fs/namei.c index f7ef769..1f2a214 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2898,6 +2898,10 @@ static int do_whiteout(struct nameidata *nd, struct path *path, int isdir) if (err) goto out; + err = -ENOENT; + if (!dentry->d_inode) + goto out; + err = -ENOTEMPTY; if (isdir && !directory_is_empty(path->dentry, path->mnt)) goto out; @@ -3012,6 +3016,10 @@ static long do_rmdir(int dfd, const char __user *pathname) error = hash_lookup_union(&nd, &nd.last, &path); if (error) goto exit2; + if (is_unionized(nd.path.dentry, nd.path.mnt)) { + error = do_whiteout(&nd, &path, 1); + goto exit3; + } error = mnt_want_write(nd.path.mnt); if (error) goto exit3; @@ -3100,6 +3108,10 @@ static long do_unlinkat(int dfd, const char __user *pathname) inode = path.dentry->d_inode; if (inode) atomic_inc(&inode->i_count); + if (is_unionized(nd.path.dentry, nd.path.mnt)) { + error = do_whiteout(&nd, &path, 0); + goto exit2; + } error = mnt_want_write(nd.path.mnt); if (error) goto exit2; -- 1.6.3.3
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