diff options
| author | Michael Halcrow <mhalcrow@us.ibm.com> | 2007-02-12 00:53:46 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-12 09:48:36 -0800 |
| commit | dd2a3b7ad98f8482cae481cad89dfed5eee48365 (patch) | |
| tree | 986c09754176ea4c6e8308c6e2cdbf3fc0658a0b /fs/ecryptfs/file.c | |
| parent | 17398957aa0a05ef62535060b41d103590dcc533 (diff) | |
| download | lwn-dd2a3b7ad98f8482cae481cad89dfed5eee48365.tar.gz lwn-dd2a3b7ad98f8482cae481cad89dfed5eee48365.zip | |
[PATCH] eCryptfs: Generalize metadata read/write
Generalize the metadata reading and writing mechanisms, with two targets for
now: metadata in file header and metadata in the user.ecryptfs xattr of the
lower file.
[akpm@osdl.org: printk warning fix]
[bunk@stusta.de: make some needlessly global code static]
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>
Diffstat (limited to 'fs/ecryptfs/file.c')
| -rw-r--r-- | fs/ecryptfs/file.c | 27 |
1 files changed, 6 insertions, 21 deletions
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index 779c3477d93c..f22c3a73485c 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -3,7 +3,7 @@ * * Copyright (C) 1997-2004 Erez Zadok * Copyright (C) 2001-2004 Stony Brook University - * Copyright (C) 2004-2006 International Business Machines Corp. + * Copyright (C) 2004-2007 International Business Machines Corp. * Author(s): Michael A. Halcrow <mhalcrow@us.ibm.com> * Michael C. Thompson <mcthomps@us.ibm.com> * @@ -293,26 +293,11 @@ static int ecryptfs_open(struct inode *inode, struct file *file) goto out; } mutex_lock(&crypt_stat->cs_mutex); - if (i_size_read(lower_inode) < ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE) { - if (!(mount_crypt_stat->flags - & ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED)) { - rc = -EIO; - printk(KERN_WARNING "Attempt to read file that is " - "not in a valid eCryptfs format, and plaintext " - "passthrough mode is not enabled; returning " - "-EIO\n"); - mutex_unlock(&crypt_stat->cs_mutex); - goto out_puts; - } - crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED); - rc = 0; - mutex_unlock(&crypt_stat->cs_mutex); - goto out; - } else if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, - ECRYPTFS_POLICY_APPLIED) - || !ECRYPTFS_CHECK_FLAG(crypt_stat->flags, - ECRYPTFS_KEY_VALID)) { - rc = ecryptfs_read_headers(ecryptfs_dentry, lower_file); + if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, + ECRYPTFS_POLICY_APPLIED) + || !ECRYPTFS_CHECK_FLAG(crypt_stat->flags, + ECRYPTFS_KEY_VALID)) { + rc = ecryptfs_read_metadata(ecryptfs_dentry, lower_file); if (rc) { ecryptfs_printk(KERN_DEBUG, "Valid headers not found\n"); |