eCryptfs: update metadata read/write functions

Update the metadata read/write functions and grow_file() to use the
read_write.c routines.  Do not open another lower file; use the persistent
lower file instead.  Provide a separate function for
crypto.c::ecryptfs_read_xattr_region() to get to the lower xattr without
having to go through the eCryptfs getxattr.

Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michael Halcrow
2007-10-16 01:28:10 -07:00
committed by Linus Torvalds
parent 4981e081cf
commit d7cdc5febf
5 changed files with 114 additions and 133 deletions

View File

@@ -248,7 +248,7 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
mutex_lock(&crypt_stat->cs_mutex);
if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED)
|| !(crypt_stat->flags & ECRYPTFS_KEY_VALID)) {
rc = ecryptfs_read_metadata(ecryptfs_dentry, lower_file);
rc = ecryptfs_read_metadata(ecryptfs_dentry);
if (rc) {
ecryptfs_printk(KERN_DEBUG,
"Valid headers not found\n");