linux-kernel - [PATCH 5/5] eCryptfs: convert lookup_one_len() to lookup_one_len

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Date:	Thu, 18 Jan 2007 15:29:33 -0600
From:	Michael Halcrow <mhalcrow@...ibm.com>
To:	Andrew Morton <akpm@...l.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 5/5] eCryptfs: convert lookup_one_len() to lookup_one_len_nd()

Call the new lookup_one_len_nd() rather than lookup_one_len(). This
fixes an oops when stacked on NFS.

Note that there are still some issues with eCryptfs on NFS having to
do with directory deletion (I'm not getting an oops, just an -EBUSY).

Signed-off-by: Michael Halcrow <mhalcrow@...ibm.com>

---
 fs/ecryptfs/inode.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 9135718..cf02a66 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -283,7 +283,9 @@ static struct dentry *ecryptfs_lookup(st
 	int rc = 0;
 	struct dentry *lower_dir_dentry;
 	struct dentry *lower_dentry;
+	struct dentry *dentry_save;
 	struct vfsmount *lower_mnt;
+	struct vfsmount *mnt_save;
 	char *encoded_name;
 	unsigned int encoded_namelen;
 	struct ecryptfs_crypt_stat *crypt_stat = NULL;
@@ -311,9 +313,13 @@ static struct dentry *ecryptfs_lookup(st
 	}
 	ecryptfs_printk(KERN_DEBUG, "encoded_name = [%s]; encoded_namelen "
 			"= [%d]\n", encoded_name, encoded_namelen);
-	lower_dentry = lookup_one_len(encoded_name, lower_dir_dentry,
-				      encoded_namelen - 1);
+	dentry_save = nd->dentry;
+	mnt_save = nd->mnt;
+	lower_dentry = lookup_one_len_nd(encoded_name, lower_dir_dentry,
+					 (encoded_namelen - 1), nd);
 	kfree(encoded_name);
+	nd->mnt = mnt_save;
+	nd->dentry = dentry_save;
 	if (IS_ERR(lower_dentry)) {
 		ecryptfs_printk(KERN_ERR, "ERR from lower_dentry\n");
 		rc = PTR_ERR(lower_dentry);
-- 
1.4.2.4

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