There is a bug in unionfs_interpose() in main.c.
When the target entry is hard-linked, the unionfs inode will be broken.
Junjiro Okajima
--- unionfs-20060221-0341/main.c 23 Feb 2006 00:47:37 -0000 1.1
+++ unionfs-20060221-0341/main.c 27 Feb 2006 21:05:38 -0000 1.2
@@ -81,6 +81,7 @@ int unionfs_interpose(struct dentry *den
err = -ENOMEM;
goto out;
}
+ mutex_lock(&inode->i_mutex);
} else {
ino_t ino;
/* get unique inode number for unionfs */
@@ -101,11 +102,11 @@ int unionfs_interpose(struct dentry *den
err = -EACCES; /* should be impossible??? */
goto out;
}
- }
- mutex_lock(&inode->i_mutex);
- if (atomic_read(&inode->i_count) > 1)
- goto skip;
+ mutex_lock(&inode->i_mutex);
+ if (atomic_read(&inode->i_count) > 1)
+ goto skip;
+ }
for (bindex = bstart; bindex <= bend; bindex++) {
hidden_dentry = dtohd_index(dentry, bindex);
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