commit 4a1a0a076887f6a03234b73bea09db29256c9322
Author: Erez Zadok <[email protected]>
Date: Mon Jan 12 23:03:29 2009 -0500
Unionfs: handle partial copyup errors gracefully
Don't leave any dentries behind if copying up the inode (or setting its
permission, i.e., using TOMOYO) failed.
CC: Tetsuo Handa <[email protected]>
Signed-off-by: Erez Zadok <[email protected]>
diff --git a/fs/unionfs/copyup.c b/fs/unionfs/copyup.c
index bbd49c8..0254b60 100644
--- a/fs/unionfs/copyup.c
+++ b/fs/unionfs/copyup.c
@@ -519,8 +519,17 @@ out_free:
dput(old_lower_dentry);
kfree(symbuf);
- if (err)
+ if (err) {
+ /*
+ * if directory creation succeeded, but inode copyup failed,
+ * then purge new dentries.
+ */
+ if (dbstart(dentry) < old_bstart &&
+ ibstart(dentry->d_inode) > dbstart(dentry))
+ __clear(dentry, NULL, old_bstart, old_bend,
+ unionfs_lower_dentry(dentry), dbstart(dentry));
goto out;
+ }
if (!S_ISDIR(dentry->d_inode->i_mode)) {
unionfs_postcopyup_release(dentry);
if (!unionfs_lower_inode(dentry->d_inode)) {
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