>From e09d7a07ef3d34762cc1f850cf255961f74712d6 Mon Sep 17 00:00:00 2001 From: Trevor Highland Date: Thu, 13 Dec 2007 00:31:11 -0600 Subject: [PATCH] [PATCH] eCryptfs: Load each file decryption key only once Signed-off-by: Trevor Highland --- fs/ecryptfs/crypto.c | 9 +++++---- 1 files changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index 70f7aab..949fe44 100644 --- a/fs/ecryptfs/crypto.c +++ b/fs/ecryptfs/crypto.c @@ -353,7 +353,6 @@ static int encrypt_scatterlist(struct ecryptfs_crypt_stat *crypt_stat, ecryptfs_dump_hex(crypt_stat->key, crypt_stat->key_size); } - /* Consider doing this once, when the file is opened */ mutex_lock(&crypt_stat->cs_tfm_mutex); if (!(crypt_stat->flags & ECRYPTFS_KEY_SET)) { rc = crypto_blkcipher_setkey(crypt_stat->tfm, crypt_stat->key, @@ -687,10 +686,12 @@ static int decrypt_scatterlist(struct ecryptfs_crypt_stat *crypt_stat, }; int rc = 0; - /* Consider doing this once, when the file is opened */ mutex_lock(&crypt_stat->cs_tfm_mutex); - rc = crypto_blkcipher_setkey(crypt_stat->tfm, crypt_stat->key, - crypt_stat->key_size); + if (!(crypt_stat->flags & ECRYPTFS_KEY_SET)) { + rc = crypto_blkcipher_setkey(crypt_stat->tfm, crypt_stat->key, + crypt_stat->key_size); + crypt_stat->flags |= ECRYPTFS_KEY_SET; + } if (rc) { ecryptfs_printk(KERN_ERR, "Error setting key; rc = [%d]\n", rc); -- 1.5.2.5