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ecryptfs: redo dget,mntget on dentry_open failure 

Thanks to Jeff Moyer for pointing this out.

If the RDWR dentry_open() in ecryptfs_init_persistent_file fails,
it will do a dput/mntput.  Need to re-take references if we
retry as RDONLY.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Acked-by: Mike Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Eric Sandeen 2007-12-22 14:03:26 -08:00 committed by Linus Torvalds
parent c8161f64cc
commit 16317ec2e5
1 changed files with 4 additions and 1 deletions
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5
fs/ecryptfs/main.c
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@ -138,11 +138,14 @@ int ecryptfs_init_persistent_file(struct dentry *ecryptfs_dentry)
inode_info->lower_file = dentry_open(lower_dentry,
lower_mnt,
(O_RDWR | O_LARGEFILE));
if (IS_ERR(inode_info->lower_file))
if (IS_ERR(inode_info->lower_file)) {
dget(lower_dentry);
mntget(lower_mnt);
inode_info->lower_file = dentry_open(lower_dentry,
lower_mnt,
(O_RDONLY
| O_LARGEFILE));
}
if (IS_ERR(inode_info->lower_file)) {
printk(KERN_ERR "Error opening lower persistent file "
"for lower_dentry [0x%p] and lower_mnt [0x%p]\n",