Commit ae56fb16 authored by Michael Halcrow's avatar Michael Halcrow Committed by Linus Torvalds
Browse files

[PATCH] eCryptfs: CIFS nlink fixes 



When CIFS is the lower filesystem, the old lower dentry needs to be explicitly
dropped from inside eCryptfs to force a revalidate.  In addition, when CIFS is
the lower filesystem, the inode attributes need to be copied back up from the
lower inode to the eCryptfs inode on an eCryptfs revalidate.

Signed-off-by: default avatarMichael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 31be8309

fs/ecryptfs/dentry.c

+6 −0
Original line number Diff line number Diff line
@@ -57,6 +57,12 @@ static int ecryptfs_d_revalidate(struct dentry *dentry, struct nameidata *nd) 
	rc = lower_dentry->d_op->d_revalidate(lower_dentry, nd);

	nd->dentry = dentry_save;

	nd->mnt = vfsmount_save;

	if (dentry->d_inode) {

		struct inode *lower_inode =

			ecryptfs_inode_to_lower(dentry->d_inode);



		ecryptfs_copy_attr_all(dentry->d_inode, lower_inode);

	}

out:

	return rc;

}

fs/ecryptfs/inode.c

+2 −1
Original line number Diff line number Diff line
@@ -470,6 +470,7 @@ out_lock: 
	unlock_dir(lower_dir_dentry);

	dput(lower_new_dentry);

	dput(lower_old_dentry);

	d_drop(lower_old_dentry);

	d_drop(new_dentry);

	d_drop(old_dentry);

	return rc;
@@ -484,7 +485,7 @@ static int ecryptfs_unlink(struct inode *dir, struct dentry *dentry) 
	lock_parent(lower_dentry);

	rc = vfs_unlink(lower_dir_inode, lower_dentry);

	if (rc) {

		ecryptfs_printk(KERN_ERR, "Error in vfs_unlink\n");

		printk(KERN_ERR "Error in vfs_unlink; rc = [%d]\n", rc);

		goto out_unlock;

	}

	ecryptfs_copy_attr_times(dir, lower_dir_inode);

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