2006-11-15 23:39:06

by Michael Halcrow

[permalink] [raw]
Subject: [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: Michael Halcrow <[email protected]>

---

fs/ecryptfs/dentry.c | 6 ++++++
fs/ecryptfs/inode.c | 3 ++-
2 files changed, 8 insertions(+), 1 deletions(-)

ddef902c356e65e01e8ca3f2cc073613e8fffdec
diff --git a/fs/ecryptfs/dentry.c b/fs/ecryptfs/dentry.c
index 0b9992a..52d1e36 100644
--- a/fs/ecryptfs/dentry.c
+++ b/fs/ecryptfs/dentry.c
@@ -57,6 +57,12 @@ static int ecryptfs_d_revalidate(struct
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;
}
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index ff4865d..fc0f624 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -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
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);
--
1.3.3